File python-zeroconf-0.39.1.obscpio of Package python-zeroconf
07070100000000000081A4000000000000000000000001631651AD0000005D000000000000000000000000000000000000002300000000python-zeroconf-0.39.1/.coveragerc[report]
exclude_lines =
pragma: no cover
if TYPE_CHECKING:
if sys.version_info
07070100000001000041ED000000000000000000000003631651AD00000000000000000000000000000000000000000000001F00000000python-zeroconf-0.39.1/.github07070100000002000041ED000000000000000000000002631651AD00000000000000000000000000000000000000000000002900000000python-zeroconf-0.39.1/.github/workflows07070100000003000081A4000000000000000000000001631651AD000008E3000000000000000000000000000000000000003000000000python-zeroconf-0.39.1/.github/workflows/ci.ymlname: CI
on:
push:
branches:
- master
pull_request:
branches:
- "**"
jobs:
build:
runs-on: ${{ matrix.os }}
strategy:
matrix:
os: [ubuntu-latest, macos-latest, windows-latest]
python-version: [3.7, 3.8, 3.9, "3.10", "pypy-3.7"]
include:
- os: ubuntu-latest
venvcmd: . env/bin/activate
- os: macos-latest
venvcmd: . env/bin/activate
- os: windows-latest
venvcmd: env\Scripts\Activate.ps1
steps:
- uses: actions/checkout@v2
- name: Set up Python ${{ matrix.python-version }}
uses: actions/setup-python@v2
with:
python-version: ${{ matrix.python-version }}
architecture: 'x64'
- uses: actions/cache@v2
id: cache
with:
path: env
key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('**/Makefile') }}-${{ hashFiles('**/requirements-dev.txt') }}
restore-keys: |
${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('**/Makefile') }}
- name: Install dependencies
if: steps.cache.outputs.cache-hit != 'true'
run: |
python -m venv env
${{ matrix.venvcmd }}
pip install --upgrade -r requirements-dev.txt pytest-github-actions-annotate-failures
- name: Validate readme
if: ${{ runner.os == 'Linux' && matrix.python-version != 'pypy-3.7' }}
run: |
${{ matrix.venvcmd }}
python -m readme_renderer README.rst -o -
- name: Run flake8
if: ${{ runner.os == 'Linux' && matrix.python-version != 'pypy-3.7' }}
run: |
${{ matrix.venvcmd }}
make flake8
- name: Run mypy
if: ${{ runner.os == 'Linux' && matrix.python-version != 'pypy-3.7' }}
run: |
${{ matrix.venvcmd }}
make mypy
- name: Run black_check
if: ${{ runner.os == 'Linux' && matrix.python-version != 'pypy-3.7' }}
run: |
${{ matrix.venvcmd }}
make black_check
- name: Run tests
run: |
${{ matrix.venvcmd }}
make test_coverage
- name: Report coverage to Codecov
uses: codecov/codecov-action@v1
07070100000004000081A4000000000000000000000001631651AD0000009A000000000000000000000000000000000000002200000000python-zeroconf-0.39.1/.gitignorebuild/
*.pyc
*.pyo
Thumbs.db
.DS_Store
.project
.pydevproject
.settings
.idea
.vslick
.cache
.mypy_cache/
docs/_build/
.vscode
/dist/
/zeroconf.egg-info/
07070100000005000081A4000000000000000000000001631651AD00005F46000000000000000000000000000000000000001F00000000python-zeroconf-0.39.1/COPYING GNU LESSER GENERAL PUBLIC LICENSE
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07070100000006000081A4000000000000000000000001631651AD00000023000000000000000000000000000000000000002300000000python-zeroconf-0.39.1/MANIFEST.ininclude README.rst
include COPYING
07070100000007000081A4000000000000000000000001631651AD00000595000000000000000000000000000000000000002000000000python-zeroconf-0.39.1/Makefile# version: 1.3
.PHONY: all virtualenv
MAX_LINE_LENGTH=110
PYTHON_IMPLEMENTATION:=$(shell python -c "import sys;import platform;sys.stdout.write(platform.python_implementation())")
PYTHON_VERSION:=$(shell python -c "import sys;sys.stdout.write('%d.%d' % sys.version_info[:2])")
LINT_TARGETS:=flake8
ifneq ($(findstring PyPy,$(PYTHON_IMPLEMENTATION)),PyPy)
LINT_TARGETS:=$(LINT_TARGETS) mypy black_check pylint
endif
virtualenv: ./env/requirements.built
env:
python -m venv env
./env/requirements.built: env requirements-dev.txt
./env/bin/pip install -r requirements-dev.txt
cp requirements-dev.txt ./env/requirements.built
.PHONY: ci
ci: lint test_coverage
.PHONY: lint
lint: $(LINT_TARGETS)
flake8:
flake8 --max-line-length=$(MAX_LINE_LENGTH) setup.py examples zeroconf
pylint:
pylint zeroconf
.PHONY: black_check
black_check:
black --check setup.py examples zeroconf
mypy:
# --no-warn-redundant-casts --no-warn-unused-ignores is needed since we support multiple python versions
# We should be able to drop this once python 3.6 goes away
mypy --no-warn-redundant-casts --no-warn-unused-ignores examples/*.py zeroconf
test:
pytest --durations=20 --timeout=60 -v tests
test_coverage:
pytest --durations=20 --timeout=60 -v --cov=zeroconf --cov-branch --cov-report xml --cov-report html --cov-report term-missing tests
autopep8:
autopep8 --max-line-length=$(MAX_LINE_LENGTH) -i setup.py examples zeroconf
07070100000008000081A4000000000000000000000001631651AD0000A662000000000000000000000000000000000000002200000000python-zeroconf-0.39.1/README.rstpython-zeroconf
===============
.. image:: https://github.com/jstasiak/python-zeroconf/workflows/CI/badge.svg
:target: https://github.com/jstasiak/python-zeroconf?query=workflow%3ACI+branch%3Amaster
.. image:: https://img.shields.io/pypi/v/zeroconf.svg
:target: https://pypi.python.org/pypi/zeroconf
.. image:: https://codecov.io/gh/jstasiak/python-zeroconf/branch/master/graph/badge.svg
:target: https://codecov.io/gh/jstasiak/python-zeroconf
`Documentation <https://python-zeroconf.readthedocs.io/en/latest/>`_.
This is fork of pyzeroconf, Multicast DNS Service Discovery for Python,
originally by Paul Scott-Murphy (https://github.com/paulsm/pyzeroconf),
modified by William McBrine (https://github.com/wmcbrine/pyzeroconf).
The original William McBrine's fork note::
This fork is used in all of my TiVo-related projects: HME for Python
(and therefore HME/VLC), Network Remote, Remote Proxy, and pyTivo.
Before this, I was tracking the changes for zeroconf.py in three
separate repos. I figured I should have an authoritative source.
Although I make changes based on my experience with TiVos, I expect that
they're generally applicable. This version also includes patches found
on the now-defunct (?) Launchpad repo of pyzeroconf, and elsewhere
around the net -- not always well-documented, sorry.
Compatible with:
* Bonjour
* Avahi
Compared to some other Zeroconf/Bonjour/Avahi Python packages, python-zeroconf:
* isn't tied to Bonjour or Avahi
* doesn't use D-Bus
* doesn't force you to use particular event loop or Twisted (asyncio is used under the hood but not required)
* is pip-installable
* has PyPI distribution
Python compatibility
--------------------
* CPython 3.7+
* PyPy3.7 7.3+
Versioning
----------
This project's versions follow the following pattern: MAJOR.MINOR.PATCH.
* MAJOR version has been 0 so far
* MINOR version is incremented on backward incompatible changes
* PATCH version is incremented on backward compatible changes
Status
------
This project is actively maintained.
Traffic Reduction
-----------------
Before version 0.32, most traffic reduction techniques described in https://datatracker.ietf.org/doc/html/rfc6762#section-7
where not implemented which could lead to excessive network traffic. It is highly recommended that version 0.32 or later
is used if this is a concern.
IPv6 support
------------
IPv6 support is relatively new and currently limited, specifically:
* `InterfaceChoice.All` is an alias for `InterfaceChoice.Default` on non-POSIX
systems.
* Dual-stack IPv6 sockets are used, which may not be supported everywhere (some
BSD variants do not have them).
* Listening on localhost (`::1`) does not work. Help with understanding why is
appreciated.
How to get python-zeroconf?
===========================
* PyPI page https://pypi.python.org/pypi/zeroconf
* GitHub project https://github.com/jstasiak/python-zeroconf
The easiest way to install python-zeroconf is using pip::
pip install zeroconf
How do I use it?
================
Here's an example of browsing for a service:
.. code-block:: python
from zeroconf import ServiceBrowser, ServiceListener, Zeroconf
class MyListener(ServiceListener):
def update_service(self, zc: Zeroconf, type_: str, name: str) -> None:
print(f"Service {name} updated")
def remove_service(self, zc: Zeroconf, type_: str, name: str) -> None:
print(f"Service {name} removed")
def add_service(self, zc: Zeroconf, type_: str, name: str) -> None:
info = zc.get_service_info(type_, name)
print(f"Service {name} added, service info: {info}")
zeroconf = Zeroconf()
listener = MyListener()
browser = ServiceBrowser(zeroconf, "_http._tcp.local.", listener)
try:
input("Press enter to exit...\n\n")
finally:
zeroconf.close()
.. note::
Discovery and service registration use *all* available network interfaces by default.
If you want to customize that you need to specify ``interfaces`` argument when
constructing ``Zeroconf`` object (see the code for details).
If you don't know the name of the service you need to browse for, try:
.. code-block:: python
from zeroconf import ZeroconfServiceTypes
print('\n'.join(ZeroconfServiceTypes.find()))
See examples directory for more.
Changelog
=========
0.39.1
======
* Performance improvements for constructing outgoing packet data (#1090) @bdraco
0.39.0
======
Technically backwards incompatible:
* Switch to using async_timeout for timeouts (#1081) @bdraco
Significantly reduces the number of asyncio tasks that are created when
using `ServiceInfo` or `AsyncServiceInfo`
0.38.7
======
* Performance improvements for parsing incoming packet data (#1076) @bdraco
0.38.6
======
* Performance improvements for fetching ServiceInfo (#1068) @bdraco
0.38.5
======
* Fix ServiceBrowsers not getting ServiceStateChange.Removed callbacks on PTR record expire (#1064) @bdraco
ServiceBrowsers were only getting a `ServiceStateChange.Removed` callback
when the record was sent with a TTL of 0. ServiceBrowsers now correctly
get a `ServiceStateChange.Removed` callback when the record expires as well.
* Fix missing minimum version of python 3.7 (#1060) @stevencrader
0.38.4
======
* Fix IP Address updates when hostname is uppercase (#1057) @bdraco
ServiceBrowsers would not callback updates when the ip address changed
if the hostname contained uppercase characters
0.38.3
======
Version bump only, no changes from 0.38.2
0.38.2
======
* Make decode errors more helpful in finding the source of the bad data (#1052) @bdraco
0.38.1
======
* Improve performance of query scheduler (#1043) @bdraco
* Avoid linear type searches in ServiceBrowsers (#1044) @bdraco
0.38.0
======
* Handle Service types that end with another service type (#1041) @apworks1
Backwards incompatible:
* Dropped Python 3.6 support (#1009) @bdraco
0.37.0
======
Technically backwards incompatible:
* Adding a listener that does not inherit from RecordUpdateListener now logs an error (#1034) @bdraco
* The NotRunningException exception is now thrown when Zeroconf is not running (#1033) @bdraco
Before this change the consumer would get a timeout or an EventLoopBlocked
exception when calling `ServiceInfo.*request` when the instance had already been shutdown
or had failed to startup.
* The EventLoopBlocked exception is now thrown when a coroutine times out (#1032) @bdraco
Previously `concurrent.futures.TimeoutError` would have been raised
instead. This is never expected to happen during normal operation.
0.36.13
=======
* Unavailable interfaces are now skipped during socket bind (#1028) @bdraco
* Downgraded incoming corrupt packet logging to debug (#1029) @bdraco
Warning about network traffic we have no control over is confusing
to users as they think there is something wrong with zeroconf
0.36.12
=======
* Prevented service lookups from deadlocking if time abruptly moves backwards (#1006) @bdraco
The typical reason time moves backwards is via an ntp update
0.36.11
=======
No functional changes from 0.36.10. This release corrects an error in the README.rst file
that prevented the build from uploading to PyPI
0.36.10
=======
* scope_id is now stripped from IPv6 addresses if given (#1020) @StevenLooman
cpython 3.9 allows a suffix %scope_id in IPv6Address. This caused an error
with the existing code if it was not stripped
* Optimized decoding labels from incoming packets (#1019) @bdraco
0.36.9
======
* Ensure ServiceInfo orders newest addresses first (#1012) @bdraco
This change effectively restored the behavior before 1s cache flush
expire behavior described in rfc6762 section 10.2 was added for callers that rely on this.
0.36.8
======
* Fixed ServiceBrowser infinite loop when zeroconf is closed before it is canceled (#1008) @bdraco
0.36.7
======
* Improved performance of responding to queries (#994) (#996) (#997) @bdraco
* Improved log message when receiving an invalid or corrupt packet (#998) @bdraco
0.36.6
======
* Improved performance of sending outgoing packets (#990) @bdraco
0.36.5
======
* Reduced memory usage for incoming and outgoing packets (#987) @bdraco
0.36.4
======
* Improved performance of constructing outgoing packets (#978) (#979) @bdraco
* Deferred parsing of incoming packets when it can be avoided (#983) @bdraco
0.36.3
======
* Improved performance of parsing incoming packets (#975) @bdraco
0.36.2
======
* Include NSEC records for non-existent types when responding with addresses (#972) (#971) @bdraco
Implements RFC6762 sec 6.2 (http://datatracker.ietf.org/doc/html/rfc6762#section-6.2)
0.36.1
======
* Skip goodbye packets for addresses when there is another service registered with the same name (#968) @bdraco
If a ServiceInfo that used the same server name as another ServiceInfo
was unregistered, goodbye packets would be sent for the addresses and
would cause the other service to be seen as offline.
* Fixed equality and hash for dns records with the unique bit (#969) @bdraco
These records should have the same hash and equality since
the unique bit (cache flush bit) is not considered when adding or removing
the records from the cache.
0.36.0
======
Technically backwards incompatible:
* Fill incomplete IPv6 tuples to avoid WinError on windows (#965) @lokesh2019
Fixed #932
0.35.1
======
* Only reschedule types if the send next time changes (#958) @bdraco
When the PTR response was seen again, the timer was being canceled and
rescheduled even if the timer was for the same time. While this did
not cause any breakage, it is quite inefficient.
* Cache DNS record and question hashes (#960) @bdraco
The hash was being recalculated every time the object
was being used in a set or dict. Since the hashes are
effectively immutable, we only calculate them once now.
0.35.0
======
* Reduced chance of accidental synchronization of ServiceInfo requests (#955) @bdraco
* Sort aggregated responses to increase chance of name compression (#954) @bdraco
Technically backwards incompatible:
* Send unicast replies on the same socket the query was received (#952) @bdraco
When replying to a QU question, we do not know if the sending host is reachable
from all of the sending sockets. We now avoid this problem by replying via
the receiving socket. This was the existing behavior when `InterfaceChoice.Default`
is set.
This change extends the unicast relay behavior to used with `InterfaceChoice.Default`
to apply when `InterfaceChoice.All` or interfaces are explicitly passed when
instantiating a `Zeroconf` instance.
Fixes #951
0.34.3
======
* Fix sending immediate multicast responses (#949) @bdraco
0.34.2
======
* Coalesce aggregated multicast answers (#945) @bdraco
When the random delay is shorter than the last scheduled response,
answers are now added to the same outgoing time group.
This reduces traffic when we already know we will be sending a group of answers
inside the random delay window described in
datatracker.ietf.org/doc/html/rfc6762#section-6.3
* Ensure ServiceInfo requests can be answered inside the default timeout with network protection (#946) @bdraco
Adjust the time windows to ensure responses that have triggered the
protection against against excessive packet flooding due to
software bugs or malicious attack described in RFC6762 section 6
can respond in under 1350ms to ensure ServiceInfo can ask two
questions within the default timeout of 3000ms
0.34.1
======
* Ensure multicast aggregation sends responses within 620ms (#942) @bdraco
Responses that trigger the protection against against excessive
packet flooding due to software bugs or malicious attack described
in RFC6762 section 6 could cause the multicast aggregation response
to be delayed longer than 620ms (The maximum random delay of 120ms
and 500ms additional for aggregation).
Only responses that trigger the protection are delayed longer than 620ms
0.34.0
======
* Implemented Multicast Response Aggregation (#940) @bdraco
Responses are now aggregated when possible per rules in RFC6762
section 6.4
Responses that trigger the protection against against excessive
packet flooding due to software bugs or malicious attack described
in RFC6762 section 6 are delayed instead of discarding as it was
causing responders that implement Passive Observation Of Failures
(POOF) to evict the records.
Probe responses are now always sent immediately as there were cases
where they would fail to be answered in time to defend a name.
0.33.4
======
* Ensure zeroconf can be loaded when the system disables IPv6 (#933) @che0
0.33.3
======
* Added support for forward dns compression pointers (#934) @bdraco
* Provide sockname when logging a protocol error (#935) @bdraco
0.33.2
======
* Handle duplicate goodbye answers in the same packet (#928) @bdraco
Solves an exception being thrown when we tried to remove the known answer
from the cache when the second goodbye answer in the same packet was processed
Fixed #926
* Skip ipv6 interfaces that return ENODEV (#930) @bdraco
0.33.1
======
* Version number change only with less restrictive directory permissions
Fixed #923
0.33.0
======
This release eliminates all threading locks as all non-threadsafe operations
now happen in the event loop.
* Let connection_lost close the underlying socket (#918) @bdraco
The socket was closed during shutdown before asyncio's connection_lost
handler had a chance to close it which resulted in a traceback on
windows.
Fixed #917
Technically backwards incompatible:
* Removed duplicate unregister_all_services code (#910) @bdraco
Calling Zeroconf.close from same asyncio event loop zeroconf is running in
will now skip unregister_all_services and log a warning as this a blocking
operation and is not async safe and never has been.
Use AsyncZeroconf instead, or for legacy code call async_unregister_all_services before Zeroconf.close
0.32.1
======
* Increased timeout in ServiceInfo.request to handle loaded systems (#895) @bdraco
It can take a few seconds for a loaded system to run the `async_request`
coroutine when the event loop is busy, or the system is CPU bound (example being
Home Assistant startup). We now add an additional `_LOADED_SYSTEM_TIMEOUT` (10s)
to the `run_coroutine_threadsafe` calls to ensure the coroutine has the total
amount of time to run up to its internal timeout (default of 3000ms).
Ten seconds is a bit large of a timeout; however, it is only used in cases
where we wrap other timeouts. We now expect the only instance the
`run_coroutine_threadsafe` result timeout will happen in a production
circumstance is when someone is running a `ServiceInfo.request()` in a thread and
another thread calls `Zeroconf.close()` at just the right moment that the future
is never completed unless the system is so loaded that it is nearly unresponsive.
The timeout for `run_coroutine_threadsafe` is the maximum time a thread can
cleanly shut down when zeroconf is closed out in another thread, which should
always be longer than the underlying thread operation.
0.32.0
======
This release offers 100% line and branch coverage.
* Made ServiceInfo first question QU (#852) @bdraco
We want an immediate response when requesting with ServiceInfo
by asking a QU question; most responders will not delay the response
and respond right away to our question. This also improves compatibility
with split networks as we may not have been able to see the response
otherwise. If the responder has not multicast the record recently,
it may still choose to do so in addition to responding via unicast
Reduces traffic when there are multiple zeroconf instances running
on the network running ServiceBrowsers
If we don't get an answer on the first try, we ask a QM question
in the event, we can't receive a unicast response for some reason
This change puts ServiceInfo inline with ServiceBrowser which
also asks the first question as QU since ServiceInfo is commonly
called from ServiceBrowser callbacks
* Limited duplicate packet suppression to 1s intervals (#841) @bdraco
Only suppress duplicate packets that happen within the same
second. Legitimate queriers will retry the question if they
are suppressed. The limit was reduced to one second to be
in line with rfc6762
* Made multipacket known answer suppression per interface (#836) @bdraco
The suppression was happening per instance of Zeroconf instead
of per interface. Since the same network can be seen on multiple
interfaces (usually and wifi and ethernet), this would confuse the
multi-packet known answer supression since it was not expecting
to get the same data more than once
* New ServiceBrowsers now request QU in the first outgoing when unspecified (#812) @bdraco
https://datatracker.ietf.org/doc/html/rfc6762#section-5.4
When we start a ServiceBrowser and zeroconf has just started up, the known
answer list will be small. By asking a QU question first, it is likely
that we have a large known answer list by the time we ask the QM question
a second later (current default which is likely too low but would be
a breaking change to increase). This reduces the amount of traffic on
the network, and has the secondary advantage that most responders will
answer a QU question without the typical delay answering QM questions.
* IPv6 link-local addresses are now qualified with scope_id (#343) @ibygrave
When a service is advertised on an IPv6 address where
the scope is link local, i.e. fe80::/64 (see RFC 4007)
the resolved IPv6 address must be extended with the
scope_id that identifies through the "%" symbol the
local interface to be used when routing to that address.
A new API `parsed_scoped_addresses()` is provided to
return qualified addresses to avoid breaking compatibility
on the existing parsed_addresses().
* Network adapters that are disconnected are now skipped (#327) @ZLJasonG
* Fixed listeners missing initial packets if Engine starts too quickly (#387) @bdraco
When manually creating a zeroconf.Engine object, it is no longer started automatically.
It must manually be started by calling .start() on the created object.
The Engine thread is now started after all the listeners have been added to avoid a
race condition where packets could be missed at startup.
* Fixed answering matching PTR queries with the ANY query (#618) @bdraco
* Fixed lookup of uppercase names in the registry (#597) @bdraco
If the ServiceInfo was registered with an uppercase name and the query was
for a lowercase name, it would not be found and vice-versa.
* Fixed unicast responses from any source port (#598) @bdraco
Unicast responses were only being sent if the source port
was 53, this prevented responses when testing with dig:
dig -p 5353 @224.0.0.251 media-12.local
The above query will now see a response
* Fixed queries for AAAA records not being answered (#616) @bdraco
* Removed second level caching from ServiceBrowsers (#737) @bdraco
The ServiceBrowser had its own cache of the last time it
saw a service that was reimplementing the DNSCache and
presenting a source of truth problem that lead to unexpected
queries when the two disagreed.
* Fixed server cache not being case-insensitive (#731) @bdraco
If the server name had uppercase chars and any of the
matching records were lowercase, and the server would not be
found
* Fixed cache handling of records with different TTLs (#729) @bdraco
There should only be one unique record in the cache at
a time as having multiple unique records will different
TTLs in the cache can result in unexpected behavior since
some functions returned all matching records and some
fetched from the right side of the list to return the
newest record. Instead we now store the records in a dict
to ensure that the newest record always replaces the same
unique record, and we never have a source of truth problem
determining the TTL of a record from the cache.
* Fixed ServiceInfo with multiple A records (#725) @bdraco
If there were multiple A records for the host, ServiceInfo
would always return the last one that was in the incoming
packet, which was usually not the one that was wanted.
* Fixed stale unique records expiring too quickly (#706) @bdraco
Records now expire 1s in the future instead of instant removal.
tools.ietf.org/html/rfc6762#section-10.2
Queriers receiving a Multicast DNS response with a TTL of zero SHOULD
NOT immediately delete the record from the cache, but instead record
a TTL of 1 and then delete the record one second later. In the case
of multiple Multicast DNS responders on the network described in
Section 6.6 above, if one of the responders shuts down and
incorrectly sends goodbye packets for its records, it gives the other
cooperating responders one second to send out their own response to
"rescue" the records before they expire and are deleted.
* Fixed exception when unregistering a service multiple times (#679) @bdraco
* Added an AsyncZeroconfServiceTypes to mirror ZeroconfServiceTypes to zeroconf.asyncio (#658) @bdraco
* Fixed interface_index_to_ip6_address not skiping ipv4 adapters (#651) @bdraco
* Added async_unregister_all_services to AsyncZeroconf (#649) @bdraco
* Fixed services not being removed from the registry when calling unregister_all_services (#644) @bdraco
There was a race condition where a query could be answered for a service
in the registry, while goodbye packets which could result in a fresh record
being broadcast after the goodbye if a query came in at just the right
time. To avoid this, we now remove the services from the registry right
after we generate the goodbye packet
* Fixed zeroconf exception on load when the system disables IPv6 (#624) @bdraco
* Fixed the QU bit missing from for probe queries (#609) @bdraco
The bit should be set per
datatracker.ietf.org/doc/html/rfc6762#section-8.1
* Fixed the TC bit missing for query packets where the known answers span multiple packets (#494) @bdraco
* Fixed packets not being properly separated when exceeding maximum size (#498) @bdraco
Ensure that questions that exceed the max packet size are
moved to the next packet. This fixes DNSQuestions being
sent in multiple packets in violation of:
datatracker.ietf.org/doc/html/rfc6762#section-7.2
Ensure only one resource record is sent when a record
exceeds _MAX_MSG_TYPICAL
datatracker.ietf.org/doc/html/rfc6762#section-17
* Fixed PTR questions asked in uppercase not being answered (#465) @bdraco
* Added Support for context managers in Zeroconf and AsyncZeroconf (#284) @shenek
* Implemented an AsyncServiceBrowser to compliment the sync ServiceBrowser (#429) @bdraco
* Added async_get_service_info to AsyncZeroconf and async_request to AsyncServiceInfo (#408) @bdraco
* Implemented allowing passing in a sync Zeroconf instance to AsyncZeroconf (#406) @bdraco
* Fixed IPv6 setup under MacOS when binding to "" (#392) @bdraco
* Fixed ZeroconfServiceTypes.find not always cancels the ServiceBrowser (#389) @bdraco
There was a short window where the ServiceBrowser thread
could be left running after Zeroconf is closed because
the .join() was never waited for when a new Zeroconf
object was created
* Fixed duplicate packets triggering duplicate updates (#376) @bdraco
If TXT or SRV records update was already processed and then
received again, it was possible for a second update to be
called back in the ServiceBrowser
* Fixed ServiceStateChange.Updated event happening for IPs that already existed (#375) @bdraco
* Fixed RFC6762 Section 10.2 paragraph 2 compliance (#374) @bdraco
* Reduced length of ServiceBrowser thread name with many types (#373) @bdraco
* Fixed empty answers being added in ServiceInfo.request (#367) @bdraco
* Fixed ServiceInfo not populating all AAAA records (#366) @bdraco
Use get_all_by_details to ensure all records are loaded
into addresses.
Only load A/AAAA records from the cache once in load_from_cache
if there is a SRV record present
Move duplicate code that checked if the ServiceInfo was complete
into its own function
* Fixed a case where the cache list can change during iteration (#363) @bdraco
* Return task objects created by AsyncZeroconf (#360) @nocarryr
Traffic Reduction:
* Added support for handling QU questions (#621) @bdraco
Implements RFC 6762 sec 5.4:
Questions Requesting Unicast Responses
datatracker.ietf.org/doc/html/rfc6762#section-5.4
* Implemented protect the network against excessive packet flooding (#619) @bdraco
* Additionals are now suppressed when they are already in the answers section (#617) @bdraco
* Additionals are no longer included when the answer is suppressed by known-answer suppression (#614) @bdraco
* Implemented multi-packet known answer supression (#687) @bdraco
Implements datatracker.ietf.org/doc/html/rfc6762#section-7.2
* Implemented efficient bucketing of queries with known answers (#698) @bdraco
* Implemented duplicate question suppression (#770) @bdraco
http://datatracker.ietf.org/doc/html/rfc6762#section-7.3
Technically backwards incompatible:
* Update internal version check to match docs (3.6+) (#491) @bdraco
Python version earlier then 3.6 were likely broken with zeroconf
already, however, the version is now explicitly checked.
* Update python compatibility as PyPy3 7.2 is required (#523) @bdraco
Backwards incompatible:
* Drop oversize packets before processing them (#826) @bdraco
Oversized packets can quickly overwhelm the system and deny
service to legitimate queriers. In practice, this is usually due to broken mDNS
implementations rather than malicious actors.
* Guard against excessive ServiceBrowser queries from PTR records significantly lowerthan recommended (#824) @bdraco
We now enforce a minimum TTL for PTR records to avoid
ServiceBrowsers generating excessive queries refresh queries.
Apple uses a 15s minimum TTL, however, we do not have the same
level of rate limit and safeguards, so we use 1/4 of the recommended value.
* RecordUpdateListener now uses async_update_records instead of update_record (#419, #726) @bdraco
This allows the listener to receive all the records that have
been updated in a single transaction such as a packet or
cache expiry.
update_record has been deprecated in favor of async_update_records
A compatibility shim exists to ensure classes that use
RecordUpdateListener as a base class continue to have
update_record called, however, they should be updated
as soon as possible.
A new method async_update_records_complete is now called on each
listener when all listeners have completed processing updates
and the cache has been updated. This allows ServiceBrowsers
to delay calling handlers until they are sure the cache
has been updated as its a common pattern to call for
ServiceInfo when a ServiceBrowser handler fires.
The async\_ prefix was chosen to make it clear that these
functions run in the eventloop and should never do blocking
I/O. Before 0.32+ these functions ran in a select() loop and
should not have been doing any blocking I/O, but it was not
clear to implementors that I/O would block the loop.
* Pass both the new and old records to async_update_records (#792) @bdraco
Pass the old_record (cached) as the value and the new_record (wire)
to async_update_records instead of forcing each consumer to
check the cache since we will always have the old_record
when generating the async_update_records call. This avoids
the overhead of multiple cache lookups for each listener.
0.31.0
======
* Separated cache loading from I/O in ServiceInfo and fixed cache lookup (#356),
thanks to J. Nick Koston.
The ServiceInfo class gained a load_from_cache() method to only fetch information
from Zeroconf cache (if it exists) with no IO performed. Additionally this should
reduce IO in cases where cache lookups were previously incorrectly failing.
0.30.0
======
* Some nice refactoring work including removal of the Reaper thread,
thanks to J. Nick Koston.
* Fixed a Windows-specific The requested address is not valid in its context regression,
thanks to Timothee ‘TTimo’ Besset and J. Nick Koston.
* Provided an asyncio-compatible service registration layer (in the zeroconf.asyncio module),
thanks to J. Nick Koston.
0.29.0
======
* A single socket is used for listening on responding when `InterfaceChoice.Default` is chosen.
Thanks to J. Nick Koston.
Backwards incompatible:
* Dropped Python 3.5 support
0.28.8
======
* Fixed the packet generation when multiple packets are necessary, previously invalid
packets were generated sometimes. Patch thanks to J. Nick Koston.
0.28.7
======
* Fixed the IPv6 address rendering in the browser example, thanks to Alexey Vazhnov.
* Fixed a crash happening when a service is added or removed during handle_response
and improved exception handling, thanks to J. Nick Koston.
0.28.6
======
* Loosened service name validation when receiving from the network this lets us handle
some real world devices previously causing errors, thanks to J. Nick Koston.
0.28.5
======
* Enabled ignoring duplicated messages which decreases CPU usage, thanks to J. Nick Koston.
* Fixed spurious AttributeError: module 'unittest' has no attribute 'mock' in tests.
0.28.4
======
* Improved cache reaper performance significantly, thanks to J. Nick Koston.
* Added ServiceListener to __all__ as it's part of the public API, thanks to Justin Nesselrotte.
0.28.3
======
* Reduced a time an internal lock is held which should eliminate deadlocks in high-traffic networks,
thanks to J. Nick Koston.
0.28.2
======
* Stopped asking questions we already have answers for in cache, thanks to Paul Daumlechner.
* Removed initial delay before querying for service info, thanks to Erik Montnemery.
0.28.1
======
* Fixed a resource leak connected to using ServiceBrowser with multiple types, thanks to
J. Nick Koston.
0.28.0
======
* Improved Windows support when using socket errno checks, thanks to Sandy Patterson.
* Added support for passing text addresses to ServiceInfo.
* Improved logging (includes fixing an incorrect logging call)
* Improved Windows compatibility by using Adapter.index from ifaddr, thanks to PhilippSelenium.
* Improved Windows compatibility by stopping using socket.if_nameindex.
* Fixed an OS X edge case which should also eliminate a memory leak, thanks to Emil Styrke.
Technically backwards incompatible:
* ``ifaddr`` 0.1.7 or newer is required now.
0.27.1
------
* Improved the logging situation (includes fixing a false-positive "packets() made no progress
adding records", thanks to Greg Badros)
0.27.0
------
* Large multi-resource responses are now split into separate packets which fixes a bad
mdns-repeater/ChromeCast Audio interaction ending with ChromeCast Audio crash (and possibly
some others) and improves RFC 6762 compliance, thanks to Greg Badros
* Added a warning presented when the listener passed to ServiceBrowser lacks update_service()
callback
* Added support for finding all services available in the browser example, thanks to Perry Kunder
Backwards incompatible:
* Removed previously deprecated ServiceInfo address constructor parameter and property
0.26.3
------
* Improved readability of logged incoming data, thanks to Erik Montnemery
* Threads are given unique names now to aid debugging, thanks to Erik Montnemery
* Fixed a regression where get_service_info() called within a listener add_service method
would deadlock, timeout and incorrectly return None, fix thanks to Erik Montnemery, but
Matt Saxon and Hmmbob were also involved in debugging it.
0.26.2
------
* Added support for multiple types to ServiceBrowser, thanks to J. Nick Koston
* Fixed a race condition where a listener gets a message before the lock is created, thanks to
J. Nick Koston
0.26.1
------
* Fixed a performance regression introduced in 0.26.0, thanks to J. Nick Koston (this is close in
spirit to an optimization made in 0.24.5 by the same author)
0.26.0
------
* Fixed a regression where service update listener wasn't called on IP address change (it's called
on SRV/A/AAAA record changes now), thanks to Matt Saxon
Technically backwards incompatible:
* Service update hook is no longer called on service addition (service added hook is still called),
this is related to the fix above
0.25.1
------
* Eliminated 5s hangup when calling Zeroconf.close(), thanks to Erik Montnemery
0.25.0
------
* Reverted uniqueness assertions when browsing, they caused a regression
Backwards incompatible:
* Rationalized handling of TXT records. Non-bytes values are converted to str and encoded to bytes
using UTF-8 now, None values mean value-less attributes. When receiving TXT records no decoding
is performed now, keys are always bytes and values are either bytes or None in value-less
attributes.
0.24.5
------
* Fixed issues with shared records being used where they shouldn't be (TXT, SRV, A records are
unique now), thanks to Matt Saxon
* Stopped unnecessarily excluding host-only interfaces from InterfaceChoice.all as they don't
forbid multicast, thanks to Andreas Oberritter
* Fixed repr() of IPv6 DNSAddress, thanks to Aldo Hoeben
* Removed duplicate update messages sent to listeners, thanks to Matt Saxon
* Added support for cooperating responders, thanks to Matt Saxon
* Optimized handle_response cache check, thanks to J. Nick Koston
* Fixed memory leak in DNSCache, thanks to J. Nick Koston
0.24.4
------
* Fixed resetting TTL in DNSRecord.reset_ttl(), thanks to Matt Saxon
* Improved various DNS class' string representations, thanks to Jay Hogg
0.24.3
------
* Fixed import-time "TypeError: 'ellipsis' object is not iterable." on CPython 3.5.2
0.24.2
------
* Added support for AWDL interface on macOS (needed and used by the opendrop project but should be
useful in general), thanks to Milan Stute
* Added missing type hints
0.24.1
------
* Applied some significant performance optimizations, thanks to Jaime van Kessel for the patch and
to Ghostkeeper for performance measurements
* Fixed flushing outdated cache entries when incoming record is unique, thanks to Michael Hu
* Fixed handling updates of TXT records (they'd not get recorded previously), thanks to Michael Hu
0.24.0
------
* Added IPv6 support, thanks to Dmitry Tantsur
* Added additional recommended records to PTR responses, thanks to Scott Mertz
* Added handling of ENOTCONN being raised during shutdown when using Eventlet, thanks to Tamás Nepusz
* Included the py.typed marker in the package so that type checkers know to use type hints from the
source code, thanks to Dmitry Tantsur
0.23.0
------
* Added support for MyListener call getting updates to service TXT records, thanks to Matt Saxon
* Added support for multiple addresses when publishing a service, getting/setting single address
has become deprecated. Change thanks to Dmitry Tantsur
Backwards incompatible:
* Dropped Python 3.4 support
0.22.0
------
* A lot of maintenance work (tooling, typing coverage and improvements, spelling) done, thanks to Ville Skyttä
* Provided saner defaults in ServiceInfo's constructor, thanks to Jorge Miranda
* Fixed service removal packets not being sent on shutdown, thanks to Andrew Bonney
* Added a way to define TTL-s through ServiceInfo contructor parameters, thanks to Andrew Bonney
Technically backwards incompatible:
* Adjusted query intervals to match RFC 6762, thanks to Andrew Bonney
* Made default TTL-s match RFC 6762, thanks to Andrew Bonney
0.21.3
------
* This time really allowed incoming service names to contain underscores (patch released
as part of 0.21.0 was defective)
0.21.2
------
* Fixed import-time typing-related TypeError when older typing version is used
0.21.1
------
* Fixed installation on Python 3.4 (we use typing now but there was no explicit dependency on it)
0.21.0
------
* Added an error message when importing the package using unsupported Python version
* Fixed TTL handling for published service
* Implemented unicast support
* Fixed WSL (Windows Subsystem for Linux) compatibility
* Fixed occasional UnboundLocalError issue
* Fixed UTF-8 multibyte name compression
* Switched from netifaces to ifaddr (pure Python)
* Allowed incoming service names to contain underscores
0.20.0
------
* Dropped support for Python 2 (this includes PyPy) and 3.3
* Fixed some class' equality operators
* ServiceBrowser entries are being refreshed when 'stale' now
* Cache returns new records first now instead of last
0.19.1
------
* Allowed installation with netifaces >= 0.10.6 (a bug that was concerning us
got fixed)
0.19.0
------
* Technically backwards incompatible - restricted netifaces dependency version to
work around a bug, see https://github.com/jstasiak/python-zeroconf/issues/84 for
details
0.18.0
------
* Dropped Python 2.6 support
* Improved error handling inside code executed when Zeroconf object is being closed
0.17.7
------
* Better Handling of DNS Incoming Packets parsing exceptions
* Many exceptions will now log a warning the first time they are seen
* Catch and log sendto() errors
* Fix/Implement duplicate name change
* Fix overly strict name validation introduced in 0.17.6
* Greatly improve handling of oversized packets including:
- Implement name compression per RFC1035
- Limit size of generated packets to 9000 bytes as per RFC6762
- Better handle over sized incoming packets
* Increased test coverage to 95%
0.17.6
------
* Many improvements to address race conditions and exceptions during ZC()
startup and shutdown, thanks to: morpav, veawor, justingiorgi, herczy,
stephenrauch
* Added more test coverage: strahlex, stephenrauch
* Stephen Rauch contributed:
- Speed up browser startup
- Add ZeroconfServiceTypes() query class to discover all advertised service types
- Add full validation for service names, types and subtypes
- Fix for subtype browsing
- Fix DNSHInfo support
0.17.5
------
* Fixed OpenBSD compatibility, thanks to Alessio Sergi
* Fixed race condition on ServiceBrowser startup, thanks to gbiddison
* Fixed installation on some Python 3 systems, thanks to Per Sandström
* Fixed "size change during iteration" bug on Python 3, thanks to gbiddison
0.17.4
------
* Fixed support for Linux kernel versions < 3.9 (thanks to Giovanni Harting
and Luckydonald, GitHub pull request #26)
0.17.3
------
* Fixed DNSText repr on Python 3 (it'd crash when the text was longer than
10 bytes), thanks to Paulus Schoutsen for the patch, GitHub pull request #24
0.17.2
------
* Fixed installation on Python 3.4.3+ (was failing because of enum34 dependency
which fails to install on 3.4.3+, changed to depend on enum-compat instead;
thanks to Michael Brennan for the original patch, GitHub pull request #22)
0.17.1
------
* Fixed EADDRNOTAVAIL when attempting to use dummy network interfaces on Windows,
thanks to daid
0.17.0
------
* Added some Python dependencies so it's not zero-dependencies anymore
* Improved exception handling (it'll be quieter now)
* Messages are listened to and sent using all available network interfaces
by default (configurable); thanks to Marcus Müller
* Started using logging more freely
* Fixed a bug with binary strings as property values being converted to False
(https://github.com/jstasiak/python-zeroconf/pull/10); thanks to Dr. Seuss
* Added new ``ServiceBrowser`` event handler interface (see the examples)
* PyPy3 now officially supported
* Fixed ServiceInfo repr on Python 3, thanks to Yordan Miladinov
0.16.0
------
* Set up Python logging and started using it
* Cleaned up code style (includes migrating from camel case to snake case)
0.15.1
------
* Fixed handling closed socket (GitHub #4)
0.15
----
* Forked by Jakub Stasiak
* Made Python 3 compatible
* Added setup script, made installable by pip and uploaded to PyPI
* Set up Travis build
* Reformatted the code and moved files around
* Stopped catching BaseException in several places, that could hide errors
* Marked threads as daemonic, they won't keep application alive now
0.14
----
* Fix for SOL_IP undefined on some systems - thanks Mike Erdely.
* Cleaned up examples.
* Lowercased module name.
0.13
----
* Various minor changes; see git for details.
* No longer compatible with Python 2.2. Only tested with 2.5-2.7.
* Fork by William McBrine.
0.12
----
* allow selection of binding interface
* typo fix - Thanks A. M. Kuchlingi
* removed all use of word 'Rendezvous' - this is an API change
0.11
----
* correction to comments for addListener method
* support for new record types seen from OS X
- IPv6 address
- hostinfo
* ignore unknown DNS record types
* fixes to name decoding
* works alongside other processes using port 5353 (e.g. on Mac OS X)
* tested against Mac OS X 10.3.2's mDNSResponder
* corrections to removal of list entries for service browser
0.10
----
* Jonathon Paisley contributed these corrections:
- always multicast replies, even when query is unicast
- correct a pointer encoding problem
- can now write records in any order
- traceback shown on failure
- better TXT record parsing
- server is now separate from name
- can cancel a service browser
* modified some unit tests to accommodate these changes
0.09
----
* remove all records on service unregistration
* fix DOS security problem with readName
0.08
----
* changed licensing to LGPL
0.07
----
* faster shutdown on engine
* pointer encoding of outgoing names
* ServiceBrowser now works
* new unit tests
0.06
----
* small improvements with unit tests
* added defined exception types
* new style objects
* fixed hostname/interface problem
* fixed socket timeout problem
* fixed add_service_listener() typo bug
* using select() for socket reads
* tested on Debian unstable with Python 2.2.2
0.05
----
* ensure case insensitivty on domain names
* support for unicast DNS queries
0.04
----
* added some unit tests
* added __ne__ adjuncts where required
* ensure names end in '.local.'
* timeout on receiving socket for clean shutdown
License
=======
LGPL, see COPYING file for details.
07070100000009000041ED000000000000000000000002631651AD00000000000000000000000000000000000000000000001C00000000python-zeroconf-0.39.1/docs0707010000000A000081A4000000000000000000000001631651AD00001A72000000000000000000000000000000000000002500000000python-zeroconf-0.39.1/docs/Makefile# Makefile for Sphinx documentation
#
# You can set these variables from the command line.
SPHINXOPTS =
SPHINXBUILD = sphinx-build
PAPER =
BUILDDIR = _build
# User-friendly check for sphinx-build
ifeq ($(shell which $(SPHINXBUILD) >/dev/null 2>&1; echo $$?), 1)
$(error The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed, then set the SPHINXBUILD environment variable to point to the full path of the '$(SPHINXBUILD)' executable. Alternatively you can add the directory with the executable to your PATH. If you don't have Sphinx installed, grab it from http://sphinx-doc.org/)
endif
# Internal variables.
PAPEROPT_a4 = -D latex_paper_size=a4
PAPEROPT_letter = -D latex_paper_size=letter
ALLSPHINXOPTS = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
# the i18n builder cannot share the environment and doctrees with the others
I18NSPHINXOPTS = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
.PHONY: help clean html dirhtml singlehtml pickle json htmlhelp qthelp devhelp epub latex latexpdf text man changes linkcheck doctest gettext
help:
@echo "Please use \`make <target>' where <target> is one of"
@echo " html to make standalone HTML files"
@echo " dirhtml to make HTML files named index.html in directories"
@echo " singlehtml to make a single large HTML file"
@echo " pickle to make pickle files"
@echo " json to make JSON files"
@echo " htmlhelp to make HTML files and a HTML help project"
@echo " qthelp to make HTML files and a qthelp project"
@echo " devhelp to make HTML files and a Devhelp project"
@echo " epub to make an epub"
@echo " latex to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
@echo " latexpdf to make LaTeX files and run them through pdflatex"
@echo " latexpdfja to make LaTeX files and run them through platex/dvipdfmx"
@echo " text to make text files"
@echo " man to make manual pages"
@echo " texinfo to make Texinfo files"
@echo " info to make Texinfo files and run them through makeinfo"
@echo " gettext to make PO message catalogs"
@echo " changes to make an overview of all changed/added/deprecated items"
@echo " xml to make Docutils-native XML files"
@echo " pseudoxml to make pseudoxml-XML files for display purposes"
@echo " linkcheck to check all external links for integrity"
@echo " doctest to run all doctests embedded in the documentation (if enabled)"
clean:
rm -rf $(BUILDDIR)/*
html:
$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
@echo
@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
dirhtml:
$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
@echo
@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
singlehtml:
$(SPHINXBUILD) -b singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
@echo
@echo "Build finished. The HTML page is in $(BUILDDIR)/singlehtml."
pickle:
$(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
@echo
@echo "Build finished; now you can process the pickle files."
json:
$(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
@echo
@echo "Build finished; now you can process the JSON files."
htmlhelp:
$(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
@echo
@echo "Build finished; now you can run HTML Help Workshop with the" \
".hhp project file in $(BUILDDIR)/htmlhelp."
qthelp:
$(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
@echo
@echo "Build finished; now you can run "qcollectiongenerator" with the" \
".qhcp project file in $(BUILDDIR)/qthelp, like this:"
@echo "# qcollectiongenerator $(BUILDDIR)/qthelp/zeroconf.qhcp"
@echo "To view the help file:"
@echo "# assistant -collectionFile $(BUILDDIR)/qthelp/zeroconf.qhc"
devhelp:
$(SPHINXBUILD) -b devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
@echo
@echo "Build finished."
@echo "To view the help file:"
@echo "# mkdir -p $$HOME/.local/share/devhelp/zeroconf"
@echo "# ln -s $(BUILDDIR)/devhelp $$HOME/.local/share/devhelp/zeroconf"
@echo "# devhelp"
epub:
$(SPHINXBUILD) -b epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
@echo
@echo "Build finished. The epub file is in $(BUILDDIR)/epub."
latex:
$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
@echo
@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
@echo "Run \`make' in that directory to run these through (pdf)latex" \
"(use \`make latexpdf' here to do that automatically)."
latexpdf:
$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
@echo "Running LaTeX files through pdflatex..."
$(MAKE) -C $(BUILDDIR)/latex all-pdf
@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
latexpdfja:
$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
@echo "Running LaTeX files through platex and dvipdfmx..."
$(MAKE) -C $(BUILDDIR)/latex all-pdf-ja
@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
text:
$(SPHINXBUILD) -b text $(ALLSPHINXOPTS) $(BUILDDIR)/text
@echo
@echo "Build finished. The text files are in $(BUILDDIR)/text."
man:
$(SPHINXBUILD) -b man $(ALLSPHINXOPTS) $(BUILDDIR)/man
@echo
@echo "Build finished. The manual pages are in $(BUILDDIR)/man."
texinfo:
$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
@echo
@echo "Build finished. The Texinfo files are in $(BUILDDIR)/texinfo."
@echo "Run \`make' in that directory to run these through makeinfo" \
"(use \`make info' here to do that automatically)."
info:
$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
@echo "Running Texinfo files through makeinfo..."
make -C $(BUILDDIR)/texinfo info
@echo "makeinfo finished; the Info files are in $(BUILDDIR)/texinfo."
gettext:
$(SPHINXBUILD) -b gettext $(I18NSPHINXOPTS) $(BUILDDIR)/locale
@echo
@echo "Build finished. The message catalogs are in $(BUILDDIR)/locale."
changes:
$(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
@echo
@echo "The overview file is in $(BUILDDIR)/changes."
linkcheck:
$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck
@echo
@echo "Link check complete; look for any errors in the above output " \
"or in $(BUILDDIR)/linkcheck/output.txt."
doctest:
$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
@echo "Testing of doctests in the sources finished, look at the " \
"results in $(BUILDDIR)/doctest/output.txt."
xml:
$(SPHINXBUILD) -b xml $(ALLSPHINXOPTS) $(BUILDDIR)/xml
@echo
@echo "Build finished. The XML files are in $(BUILDDIR)/xml."
pseudoxml:
$(SPHINXBUILD) -b pseudoxml $(ALLSPHINXOPTS) $(BUILDDIR)/pseudoxml
@echo
@echo "Build finished. The pseudo-XML files are in $(BUILDDIR)/pseudoxml."
0707010000000B000081A4000000000000000000000001631651AD000000EA000000000000000000000000000000000000002400000000python-zeroconf-0.39.1/docs/api.rstpython-zeroconf API reference
=============================
.. automodule:: zeroconf
:members:
:undoc-members:
:show-inheritance:
.. automodule:: zeroconf.asyncio
:members:
:undoc-members:
:show-inheritance:
0707010000000C000081A4000000000000000000000001631651AD0000205E000000000000000000000000000000000000002400000000python-zeroconf-0.39.1/docs/conf.py# -*- coding: utf-8 -*-
#
# This file is execfile()d with the current directory set to its containing dir.
#
# Note that not all possible configuration values are present in this
# autogenerated file.
#
# All configuration values have a default; values that are commented out
# serve to show the default.
import zeroconf
# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
# sys.path.insert(0, os.path.abspath('.'))
# -- General configuration -----------------------------------------------------
# If your documentation needs a minimal Sphinx version, state it here.
# needs_sphinx = '1.0'
# Add any Sphinx extension module names here, as strings. They can be extensions
# coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
extensions = ['sphinx.ext.autodoc', 'sphinx.ext.intersphinx']
# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']
# The suffix of source filenames.
source_suffix = '.rst'
# The encoding of source files.
# source_encoding = 'utf-8-sig'
# The master toctree document.
master_doc = 'index'
# General information about the project.
project = 'python-zeroconf'
copyright = 'python-zeroconf authors'
# The version info for the project you're documenting, acts as replacement for
# |version| and |release|, also used in various other places throughout the
# built documents.
#
# The short X.Y version.
version = zeroconf.__version__
# The full version, including alpha/beta/rc tags.
release = version
# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
# language = None
# There are two options for replacing |today|: either, you set today to some
# non-false value, then it is used:
# today = ''
# Else, today_fmt is used as the format for a strftime call.
# today_fmt = '%B %d, %Y'
# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
exclude_patterns = ['_build']
# The reST default role (used for this markup: `text`) to use for all documents.
# default_role = None
# If true, '()' will be appended to :func: etc. cross-reference text.
# add_function_parentheses = True
# If true, the current module name will be prepended to all description
# unit titles (such as .. function::).
# add_module_names = True
# If true, sectionauthor and moduleauthor directives will be shown in the
# output. They are ignored by default.
# show_authors = False
# The name of the Pygments (syntax highlighting) style to use.
pygments_style = 'sphinx'
# A list of ignored prefixes for module index sorting.
# modindex_common_prefix = []
# If true, keep warnings as "system message" paragraphs in the built documents.
# keep_warnings = False
# -- Options for HTML output ---------------------------------------------------
# The theme to use for HTML and HTML Help pages. See the documentation for
# a list of builtin themes.
html_theme = 'default'
# Theme options are theme-specific and customize the look and feel of a theme
# further. For a list of options available for each theme, see the
# documentation.
# html_theme_options = {}
# Add any paths that contain custom themes here, relative to this directory.
# html_theme_path = []
# The name for this set of Sphinx documents. If None, it defaults to
# "<project> v<release> documentation".
# html_title = None
# A shorter title for the navigation bar. Default is the same as html_title.
# html_short_title = None
# The name of an image file (relative to this directory) to place at the top
# of the sidebar.
# html_logo = None
# The name of an image file (within the static path) to use as favicon of the
# docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32
# pixels large.
# html_favicon = None
# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['_static']
# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
# using the given strftime format.
# html_last_updated_fmt = '%b %d, %Y'
# If true, SmartyPants will be used to convert quotes and dashes to
# typographically correct entities.
# html_use_smartypants = True
# Custom sidebar templates, maps document names to template names.
html_sidebars = {
'index': ('sidebar.html', 'sourcelink.html', 'searchbox.html'),
'**': ('localtoc.html', 'relations.html', 'sourcelink.html', 'searchbox.html'),
}
# Additional templates that should be rendered to pages, maps page names to
# template names.
# html_additional_pages = {}
# If false, no module index is generated.
# html_domain_indices = True
# If false, no index is generated.
# html_use_index = True
# If true, the index is split into individual pages for each letter.
# html_split_index = False
# If true, links to the reST sources are added to the pages.
# html_show_sourcelink = True
# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
# html_show_sphinx = True
# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
# html_show_copyright = True
# If true, an OpenSearch description file will be output, and all pages will
# contain a <link> tag referring to it. The value of this option must be the
# base URL from which the finished HTML is served.
# html_use_opensearch = ''
# This is the file name suffix for HTML files (e.g. ".xhtml").
# html_file_suffix = None
# Output file base name for HTML help builder.
htmlhelp_basename = 'zeroconfdoc'
# -- Options for LaTeX output --------------------------------------------------
latex_elements = {
# The paper size ('letterpaper' or 'a4paper').
#'papersize': 'letterpaper',
# The font size ('10pt', '11pt' or '12pt').
#'pointsize': '10pt',
# Additional stuff for the LaTeX preamble.
#'preamble': '',
}
# Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title, author, documentclass [howto/manual]).
# latex_documents = []
# The name of an image file (relative to this directory) to place at the top of
# the title page.
# latex_logo = None
# For "manual" documents, if this is true, then toplevel headings are parts,
# not chapters.
# latex_use_parts = False
# If true, show page references after internal links.
# latex_show_pagerefs = False
# If true, show URL addresses after external links.
# latex_show_urls = False
# Documents to append as an appendix to all manuals.
# latex_appendices = []
# If false, no module index is generated.
# latex_domain_indices = True
# -- Options for manual page output --------------------------------------------
# One entry per manual page. List of tuples
# (source start file, name, description, authors, manual section).
# man_pages = []
# If true, show URL addresses after external links.
# man_show_urls = False
# -- Options for Texinfo output ------------------------------------------------
# Grouping the document tree into Texinfo files. List of tuples
# (source start file, target name, title, author,
# dir menu entry, description, category)
# texinfo_documents = []
# Documents to append as an appendix to all manuals.
# texinfo_appendices = []
# If false, no module index is generated.
# texinfo_domain_indices = True
# How to display URL addresses: 'footnote', 'no', or 'inline'.
# texinfo_show_urls = 'footnote'
# If true, do not generate a @detailmenu in the "Top" node's menu.
# texinfo_no_detailmenu = False
# Example configuration for intersphinx: refer to the Python standard library.
intersphinx_mapping = {'http://docs.python.org/': None}
def setup(app):
app.connect('autodoc-skip-member', skip_member)
def skip_member(app, what, name, obj, skip, options):
return (
skip
or getattr(obj, '__doc__', None) is None
or getattr(obj, '__private__', False) is True
or getattr(getattr(obj, '__func__', None), '__private__', False) is True
)
0707010000000D000081A4000000000000000000000001631651AD000003DF000000000000000000000000000000000000002600000000python-zeroconf-0.39.1/docs/index.rstWelcome to python-zeroconf documentation!
=========================================
.. image:: https://github.com/jstasiak/python-zeroconf/workflows/CI/badge.svg
:target: https://github.com/jstasiak/python-zeroconf?query=workflow%3ACI+branch%3Amaster
.. image:: https://img.shields.io/pypi/v/zeroconf.svg
:target: https://pypi.python.org/pypi/zeroconf
.. image:: https://codecov.io/gh/jstasiak/python-zeroconf/branch/master/graph/badge.svg
:target: https://codecov.io/gh/jstasiak/python-zeroconf
GitHub (code repository, issues): https://github.com/jstasiak/python-zeroconf
PyPI (installable, stable distributions): https://pypi.org/project/zeroconf. You can install python-zeroconf using pip::
pip install zeroconf
python-zeroconf works with CPython 3.6+ and PyPy 3 implementing Python 3.6+.
Contents
--------
.. toctree::
:maxdepth: 1
api
See `the project's README <https://github.com/jstasiak/python-zeroconf/blob/master/README.rst>`_ for more information.
0707010000000E000041ED000000000000000000000002631651AD00000000000000000000000000000000000000000000002000000000python-zeroconf-0.39.1/examples0707010000000F000081A4000000000000000000000001631651AD000010E1000000000000000000000000000000000000003700000000python-zeroconf-0.39.1/examples/async_apple_scanner.py#!/usr/bin/env python3
""" Scan for apple devices. """
import argparse
import asyncio
import logging
from typing import Any, Optional, cast
from zeroconf import DNSQuestionType, IPVersion, ServiceStateChange, Zeroconf
from zeroconf.asyncio import AsyncServiceBrowser, AsyncServiceInfo, AsyncZeroconf
HOMESHARING_SERVICE: str = "_appletv-v2._tcp.local."
DEVICE_SERVICE: str = "_touch-able._tcp.local."
MEDIAREMOTE_SERVICE: str = "_mediaremotetv._tcp.local."
AIRPLAY_SERVICE: str = "_airplay._tcp.local."
COMPANION_SERVICE: str = "_companion-link._tcp.local."
RAOP_SERVICE: str = "_raop._tcp.local."
AIRPORT_ADMIN_SERVICE: str = "_airport._tcp.local."
DEVICE_INFO_SERVICE: str = "_device-info._tcp.local."
ALL_SERVICES = [
HOMESHARING_SERVICE,
DEVICE_SERVICE,
MEDIAREMOTE_SERVICE,
AIRPLAY_SERVICE,
COMPANION_SERVICE,
RAOP_SERVICE,
AIRPORT_ADMIN_SERVICE,
DEVICE_INFO_SERVICE,
]
log = logging.getLogger(__name__)
def async_on_service_state_change(
zeroconf: Zeroconf, service_type: str, name: str, state_change: ServiceStateChange
) -> None:
print(f"Service {name} of type {service_type} state changed: {state_change}")
if state_change is not ServiceStateChange.Added:
return
base_name = name[: -len(service_type) - 1]
device_name = f"{base_name}.{DEVICE_INFO_SERVICE}"
asyncio.ensure_future(_async_show_service_info(zeroconf, service_type, name))
# Also probe for device info
asyncio.ensure_future(_async_show_service_info(zeroconf, DEVICE_INFO_SERVICE, device_name))
async def _async_show_service_info(zeroconf: Zeroconf, service_type: str, name: str) -> None:
info = AsyncServiceInfo(service_type, name)
await info.async_request(zeroconf, 3000, question_type=DNSQuestionType.QU)
print("Info from zeroconf.get_service_info: %r" % (info))
if info:
addresses = ["%s:%d" % (addr, cast(int, info.port)) for addr in info.parsed_addresses()]
print(" Name: %s" % name)
print(" Addresses: %s" % ", ".join(addresses))
print(" Weight: %d, priority: %d" % (info.weight, info.priority))
print(f" Server: {info.server}")
if info.properties:
print(" Properties are:")
for key, value in info.properties.items():
print(f" {key}: {value}")
else:
print(" No properties")
else:
print(" No info")
print('\n')
class AsyncAppleScanner:
def __init__(self, args: Any) -> None:
self.args = args
self.aiobrowser: Optional[AsyncServiceBrowser] = None
self.aiozc: Optional[AsyncZeroconf] = None
async def async_run(self) -> None:
self.aiozc = AsyncZeroconf(ip_version=ip_version)
await self.aiozc.zeroconf.async_wait_for_start()
print("\nBrowsing %s service(s), press Ctrl-C to exit...\n" % ALL_SERVICES)
kwargs = {'handlers': [async_on_service_state_change], 'question_type': DNSQuestionType.QU}
if self.args.target:
kwargs["addr"] = self.args.target
self.aiobrowser = AsyncServiceBrowser(self.aiozc.zeroconf, ALL_SERVICES, **kwargs) # type: ignore
while True:
await asyncio.sleep(1)
async def async_close(self) -> None:
assert self.aiozc is not None
assert self.aiobrowser is not None
await self.aiobrowser.async_cancel()
await self.aiozc.async_close()
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('--debug', action='store_true')
version_group = parser.add_mutually_exclusive_group()
version_group.add_argument('--target', help='Unicast target')
version_group.add_argument('--v6', action='store_true')
version_group.add_argument('--v6-only', action='store_true')
args = parser.parse_args()
if args.debug:
logging.getLogger('zeroconf').setLevel(logging.DEBUG)
if args.v6:
ip_version = IPVersion.All
elif args.v6_only:
ip_version = IPVersion.V6Only
else:
ip_version = IPVersion.V4Only
loop = asyncio.get_event_loop()
runner = AsyncAppleScanner(args)
try:
loop.run_until_complete(runner.async_run())
except KeyboardInterrupt:
loop.run_until_complete(runner.async_close())
07070100000010000081A4000000000000000000000001631651AD00000DFF000000000000000000000000000000000000003100000000python-zeroconf-0.39.1/examples/async_browser.py#!/usr/bin/env python3
""" Example of browsing for a service.
The default is HTTP and HAP; use --find to search for all available services in the network
"""
import argparse
import asyncio
import logging
from typing import Any, Optional, cast
from zeroconf import IPVersion, ServiceStateChange, Zeroconf
from zeroconf.asyncio import AsyncServiceBrowser, AsyncServiceInfo, AsyncZeroconf, AsyncZeroconfServiceTypes
def async_on_service_state_change(
zeroconf: Zeroconf, service_type: str, name: str, state_change: ServiceStateChange
) -> None:
print(f"Service {name} of type {service_type} state changed: {state_change}")
if state_change is not ServiceStateChange.Added:
return
asyncio.ensure_future(async_display_service_info(zeroconf, service_type, name))
async def async_display_service_info(zeroconf: Zeroconf, service_type: str, name: str) -> None:
info = AsyncServiceInfo(service_type, name)
await info.async_request(zeroconf, 3000)
print("Info from zeroconf.get_service_info: %r" % (info))
if info:
addresses = ["%s:%d" % (addr, cast(int, info.port)) for addr in info.parsed_scoped_addresses()]
print(" Name: %s" % name)
print(" Addresses: %s" % ", ".join(addresses))
print(" Weight: %d, priority: %d" % (info.weight, info.priority))
print(f" Server: {info.server}")
if info.properties:
print(" Properties are:")
for key, value in info.properties.items():
print(f" {key}: {value}")
else:
print(" No properties")
else:
print(" No info")
print('\n')
class AsyncRunner:
def __init__(self, args: Any) -> None:
self.args = args
self.aiobrowser: Optional[AsyncServiceBrowser] = None
self.aiozc: Optional[AsyncZeroconf] = None
async def async_run(self) -> None:
self.aiozc = AsyncZeroconf(ip_version=ip_version)
services = ["_http._tcp.local.", "_hap._tcp.local."]
if self.args.find:
services = list(
await AsyncZeroconfServiceTypes.async_find(aiozc=self.aiozc, ip_version=ip_version)
)
print("\nBrowsing %s service(s), press Ctrl-C to exit...\n" % services)
self.aiobrowser = AsyncServiceBrowser(
self.aiozc.zeroconf, services, handlers=[async_on_service_state_change]
)
while True:
await asyncio.sleep(1)
async def async_close(self) -> None:
assert self.aiozc is not None
assert self.aiobrowser is not None
await self.aiobrowser.async_cancel()
await self.aiozc.async_close()
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('--debug', action='store_true')
parser.add_argument('--find', action='store_true', help='Browse all available services')
version_group = parser.add_mutually_exclusive_group()
version_group.add_argument('--v6', action='store_true')
version_group.add_argument('--v6-only', action='store_true')
args = parser.parse_args()
if args.debug:
logging.getLogger('zeroconf').setLevel(logging.DEBUG)
if args.v6:
ip_version = IPVersion.All
elif args.v6_only:
ip_version = IPVersion.V6Only
else:
ip_version = IPVersion.V4Only
loop = asyncio.get_event_loop()
runner = AsyncRunner(args)
try:
loop.run_until_complete(runner.async_run())
except KeyboardInterrupt:
loop.run_until_complete(runner.async_close())
07070100000011000081A4000000000000000000000001631651AD000009F5000000000000000000000000000000000000003600000000python-zeroconf-0.39.1/examples/async_registration.py#!/usr/bin/env python3
"""Example of announcing 250 services (in this case, a fake HTTP server)."""
import argparse
import asyncio
import logging
import socket
from typing import List, Optional
from zeroconf import IPVersion
from zeroconf.asyncio import AsyncServiceInfo, AsyncZeroconf
class AsyncRunner:
def __init__(self, ip_version: IPVersion) -> None:
self.ip_version = ip_version
self.aiozc: Optional[AsyncZeroconf] = None
async def register_services(self, infos: List[AsyncServiceInfo]) -> None:
self.aiozc = AsyncZeroconf(ip_version=self.ip_version)
tasks = [self.aiozc.async_register_service(info) for info in infos]
background_tasks = await asyncio.gather(*tasks)
await asyncio.gather(*background_tasks)
print("Finished registration, press Ctrl-C to exit...")
while True:
await asyncio.sleep(1)
async def unregister_services(self, infos: List[AsyncServiceInfo]) -> None:
assert self.aiozc is not None
tasks = [self.aiozc.async_unregister_service(info) for info in infos]
background_tasks = await asyncio.gather(*tasks)
await asyncio.gather(*background_tasks)
await self.aiozc.async_close()
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('--debug', action='store_true')
version_group = parser.add_mutually_exclusive_group()
version_group.add_argument('--v6', action='store_true')
version_group.add_argument('--v6-only', action='store_true')
args = parser.parse_args()
if args.debug:
logging.getLogger('zeroconf').setLevel(logging.DEBUG)
if args.v6:
ip_version = IPVersion.All
elif args.v6_only:
ip_version = IPVersion.V6Only
else:
ip_version = IPVersion.V4Only
infos = []
for i in range(250):
infos.append(
AsyncServiceInfo(
"_http._tcp.local.",
f"Paul's Test Web Site {i}._http._tcp.local.",
addresses=[socket.inet_aton("127.0.0.1")],
port=80,
properties={'path': '/~paulsm/'},
server=f"zcdemohost-{i}.local.",
)
)
print("Registration of 250 services...")
loop = asyncio.get_event_loop()
runner = AsyncRunner(ip_version)
try:
loop.run_until_complete(runner.register_services(infos))
except KeyboardInterrupt:
loop.run_until_complete(runner.unregister_services(infos))
07070100000012000081A4000000000000000000000001631651AD00000D81000000000000000000000000000000000000003E00000000python-zeroconf-0.39.1/examples/async_service_info_request.py#!/usr/bin/env python3
"""Example of perodic dump of homekit services.
This example is useful when a user wants an ondemand
list of HomeKit devices on the network.
"""
import argparse
import asyncio
import logging
from typing import Any, Optional, cast
from zeroconf import IPVersion, ServiceBrowser, ServiceStateChange, Zeroconf
from zeroconf.asyncio import AsyncServiceInfo, AsyncZeroconf
HAP_TYPE = "_hap._tcp.local."
async def async_watch_services(aiozc: AsyncZeroconf) -> None:
zeroconf = aiozc.zeroconf
while True:
await asyncio.sleep(5)
infos = []
for name in zeroconf.cache.names():
if not name.endswith(HAP_TYPE):
continue
infos.append(AsyncServiceInfo(HAP_TYPE, name))
tasks = [info.async_request(aiozc.zeroconf, 3000) for info in infos]
await asyncio.gather(*tasks)
for info in infos:
print("Info for %s" % (info.name))
if info:
addresses = ["%s:%d" % (addr, cast(int, info.port)) for addr in info.parsed_addresses()]
print(" Addresses: %s" % ", ".join(addresses))
print(" Weight: %d, priority: %d" % (info.weight, info.priority))
print(f" Server: {info.server}")
if info.properties:
print(" Properties are:")
for key, value in info.properties.items():
print(f" {key}: {value}")
else:
print(" No properties")
else:
print(" No info")
print('\n')
class AsyncRunner:
def __init__(self, args: Any) -> None:
self.args = args
self.threaded_browser: Optional[ServiceBrowser] = None
self.aiozc: Optional[AsyncZeroconf] = None
async def async_run(self) -> None:
self.aiozc = AsyncZeroconf(ip_version=ip_version)
assert self.aiozc is not None
def on_service_state_change(
zeroconf: Zeroconf, service_type: str, state_change: ServiceStateChange, name: str
) -> None:
"""Dummy handler."""
self.threaded_browser = ServiceBrowser(
self.aiozc.zeroconf, [HAP_TYPE], handlers=[on_service_state_change]
)
await async_watch_services(self.aiozc)
async def async_close(self) -> None:
assert self.aiozc is not None
assert self.threaded_browser is not None
self.threaded_browser.cancel()
await self.aiozc.async_close()
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('--debug', action='store_true')
version_group = parser.add_mutually_exclusive_group()
version_group.add_argument('--v6', action='store_true')
version_group.add_argument('--v6-only', action='store_true')
args = parser.parse_args()
if args.debug:
logging.getLogger('zeroconf').setLevel(logging.DEBUG)
if args.v6:
ip_version = IPVersion.All
elif args.v6_only:
ip_version = IPVersion.V6Only
else:
ip_version = IPVersion.V4Only
print(f"Services with {HAP_TYPE} will be shown every 5s, press Ctrl-C to exit...")
loop = asyncio.get_event_loop()
runner = AsyncRunner(args)
try:
loop.run_until_complete(runner.async_run())
except KeyboardInterrupt:
loop.run_until_complete(runner.async_close())
07070100000013000081ED000000000000000000000001631651AD000009F9000000000000000000000000000000000000002B00000000python-zeroconf-0.39.1/examples/browser.py#!/usr/bin/env python3
""" Example of browsing for a service.
The default is HTTP and HAP; use --find to search for all available services in the network
"""
import argparse
import logging
from time import sleep
from typing import cast
from zeroconf import IPVersion, ServiceBrowser, ServiceStateChange, Zeroconf, ZeroconfServiceTypes
def on_service_state_change(
zeroconf: Zeroconf, service_type: str, name: str, state_change: ServiceStateChange
) -> None:
print(f"Service {name} of type {service_type} state changed: {state_change}")
if state_change is ServiceStateChange.Added:
info = zeroconf.get_service_info(service_type, name)
print("Info from zeroconf.get_service_info: %r" % (info))
if info:
addresses = ["%s:%d" % (addr, cast(int, info.port)) for addr in info.parsed_scoped_addresses()]
print(" Addresses: %s" % ", ".join(addresses))
print(" Weight: %d, priority: %d" % (info.weight, info.priority))
print(f" Server: {info.server}")
if info.properties:
print(" Properties are:")
for key, value in info.properties.items():
print(f" {key}: {value}")
else:
print(" No properties")
else:
print(" No info")
print('\n')
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('--debug', action='store_true')
parser.add_argument('--find', action='store_true', help='Browse all available services')
version_group = parser.add_mutually_exclusive_group()
version_group.add_argument('--v6', action='store_true')
version_group.add_argument('--v6-only', action='store_true')
args = parser.parse_args()
if args.debug:
logging.getLogger('zeroconf').setLevel(logging.DEBUG)
if args.v6:
ip_version = IPVersion.All
elif args.v6_only:
ip_version = IPVersion.V6Only
else:
ip_version = IPVersion.V4Only
zeroconf = Zeroconf(ip_version=ip_version)
services = ["_http._tcp.local.", "_hap._tcp.local."]
if args.find:
services = list(ZeroconfServiceTypes.find(zc=zeroconf))
print("\nBrowsing %d service(s), press Ctrl-C to exit...\n" % len(services))
browser = ServiceBrowser(zeroconf, services, handlers=[on_service_state_change])
try:
while True:
sleep(0.1)
except KeyboardInterrupt:
pass
finally:
zeroconf.close()
07070100000014000081ED000000000000000000000001631651AD000005C1000000000000000000000000000000000000003000000000python-zeroconf-0.39.1/examples/registration.py#!/usr/bin/env python3
""" Example of announcing a service (in this case, a fake HTTP server) """
import argparse
import logging
import socket
from time import sleep
from zeroconf import IPVersion, ServiceInfo, Zeroconf
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('--debug', action='store_true')
version_group = parser.add_mutually_exclusive_group()
version_group.add_argument('--v6', action='store_true')
version_group.add_argument('--v6-only', action='store_true')
args = parser.parse_args()
if args.debug:
logging.getLogger('zeroconf').setLevel(logging.DEBUG)
if args.v6:
ip_version = IPVersion.All
elif args.v6_only:
ip_version = IPVersion.V6Only
else:
ip_version = IPVersion.V4Only
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
"_http._tcp.local.",
"Paul's Test Web Site._http._tcp.local.",
addresses=[socket.inet_aton("127.0.0.1")],
port=80,
properties=desc,
server="ash-2.local.",
)
zeroconf = Zeroconf(ip_version=ip_version)
print("Registration of a service, press Ctrl-C to exit...")
zeroconf.register_service(info)
try:
while True:
sleep(0.1)
except KeyboardInterrupt:
pass
finally:
print("Unregistering...")
zeroconf.unregister_service(info)
zeroconf.close()
07070100000015000081ED000000000000000000000001631651AD00000219000000000000000000000000000000000000002C00000000python-zeroconf-0.39.1/examples/resolver.py#!/usr/bin/env python3
""" Example of resolving a service with a known name """
import logging
import sys
from zeroconf import Zeroconf
TYPE = '_test._tcp.local.'
NAME = 'My Service Name'
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
if len(sys.argv) > 1:
assert sys.argv[1:] == ['--debug']
logging.getLogger('zeroconf').setLevel(logging.DEBUG)
zeroconf = Zeroconf()
try:
print(zeroconf.get_service_info(TYPE, NAME + '.' + TYPE))
finally:
zeroconf.close()
07070100000016000081ED000000000000000000000001631651AD000006F9000000000000000000000000000000000000002D00000000python-zeroconf-0.39.1/examples/self_test.py#!/usr/bin/env python3
import logging
import socket
import sys
from zeroconf import ServiceInfo, Zeroconf, __version__
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
if len(sys.argv) > 1:
assert sys.argv[1:] == ['--debug']
logging.getLogger('zeroconf').setLevel(logging.DEBUG)
# Test a few module features, including service registration, service
# query (for Zoe), and service unregistration.
print(f"Multicast DNS Service Discovery for Python, version {__version__}")
r = Zeroconf()
print("1. Testing registration of a service...")
desc = {'version': '0.10', 'a': 'test value', 'b': 'another value'}
addresses = [socket.inet_aton("127.0.0.1")]
expected = {'127.0.0.1'}
if socket.has_ipv6:
addresses.append(socket.inet_pton(socket.AF_INET6, '::1'))
expected.add('::1')
info = ServiceInfo(
"_http._tcp.local.",
"My Service Name._http._tcp.local.",
addresses=addresses,
port=1234,
properties=desc,
)
print(" Registering service...")
r.register_service(info)
print(" Registration done.")
print("2. Testing query of service information...")
print(" Getting ZOE service: %s" % (r.get_service_info("_http._tcp.local.", "ZOE._http._tcp.local.")))
print(" Query done.")
print("3. Testing query of own service...")
queried_info = r.get_service_info("_http._tcp.local.", "My Service Name._http._tcp.local.")
assert queried_info
assert set(queried_info.parsed_addresses()) == expected
print(f" Getting self: {queried_info}")
print(" Query done.")
print("4. Testing unregister of service information...")
r.unregister_service(info)
print(" Unregister done.")
r.close()
07070100000017000081A4000000000000000000000001631651AD0000026F000000000000000000000000000000000000002600000000python-zeroconf-0.39.1/pyproject.toml[tool.black]
line-length = 110
target_version = ['py35', 'py36', 'py37', 'py38']
skip_string_normalization = true
[tool.pylint.BASIC]
class-const-naming-style = "any"
good-names = [
"e",
"er",
"h",
"i",
"id",
"ip",
"os",
"n",
"rr",
"rs",
"s",
"t",
"wr",
"zc",
"_GLOBAL_DONE",
]
[tool.pylint."MESSAGES CONTROL"]
disable = [
"duplicate-code",
"fixme",
"format",
"missing-class-docstring",
"missing-function-docstring",
"too-few-public-methods",
"too-many-arguments",
"too-many-instance-attributes",
"too-many-public-methods"
]
07070100000018000081A4000000000000000000000001631651AD000000FA000000000000000000000000000000000000002C00000000python-zeroconf-0.39.1/requirements-dev.txtasync_timeout>=4.0.1
autopep8
black;implementation_name=="cpython"
bump2version
coverage
flake8
flake8-import-order
ifaddr
mypy;implementation_name=="cpython"
pep8-naming>=0.12.0
pylint
pytest
pytest-asyncio
pytest-cov
pytest-timeout
readme_renderer
07070100000019000081A4000000000000000000000001631651AD00000302000000000000000000000000000000000000002100000000python-zeroconf-0.39.1/setup.cfg[bumpversion]
current_version = 0.39.1
commit = True
tag = True
tag_name = {new_version}
[bumpversion:file:zeroconf/__init__.py]
search = __version__ = '{current_version}'
replace = __version__ = '{new_version}'
[tool:pytest]
testpaths = tests
[flake8]
show-source = 1
application-import-names = zeroconf
max-line-length = 110
ignore = E203,W503,N818
[mypy]
ignore_missing_imports = true
follow_imports = skip
check_untyped_defs = true
no_implicit_optional = true
warn_incomplete_stub = true
warn_no_return = true
warn_redundant_casts = true
warn_unused_configs = true
warn_unused_ignores = true
warn_return_any = true
disallow_untyped_calls = false
disallow_untyped_defs = true
[mypy-zeroconf.test]
disallow_untyped_defs = false
0707010000001A000081ED000000000000000000000001631651AD0000075C000000000000000000000000000000000000002000000000python-zeroconf-0.39.1/setup.py#!/usr/bin/env python3
from io import open
from os.path import abspath, dirname, join
from setuptools import setup
PROJECT_ROOT = abspath(dirname(__file__))
with open(join(PROJECT_ROOT, 'README.rst'), encoding='utf-8') as f:
readme = f.read()
version = (
[ln for ln in open(join(PROJECT_ROOT, 'zeroconf', '__init__.py')) if '__version__' in ln][0]
.split('=')[-1]
.strip()
.strip('\'"')
)
setup(
name='zeroconf',
version=version,
description='Pure Python Multicast DNS Service Discovery Library ' '(Bonjour/Avahi compatible)',
long_description=readme,
author='Paul Scott-Murphy, William McBrine, Jakub Stasiak',
url='https://github.com/jstasiak/python-zeroconf',
package_data={"zeroconf": ["py.typed"]},
packages=["zeroconf", "zeroconf._protocol", "zeroconf._services", "zeroconf._utils"],
platforms=['unix', 'linux', 'osx'],
license='LGPL',
zip_safe=False,
python_requires='>=3.7',
classifiers=[
'Development Status :: 3 - Alpha',
'Intended Audience :: Developers',
'Intended Audience :: System Administrators',
'License :: OSI Approved :: GNU Lesser General Public License v2 (LGPLv2)',
'Operating System :: POSIX',
'Operating System :: POSIX :: Linux',
'Operating System :: MacOS :: MacOS X',
'Topic :: Software Development :: Libraries',
'Programming Language :: Python :: 3.7',
'Programming Language :: Python :: 3.8',
'Programming Language :: Python :: 3.9',
'Programming Language :: Python :: 3.10',
'Programming Language :: Python :: Implementation :: CPython',
'Programming Language :: Python :: Implementation :: PyPy',
],
keywords=['Bonjour', 'Avahi', 'Zeroconf', 'Multicast DNS', 'Service Discovery', 'mDNS'],
install_requires=['async_timeout>=4.0.1', 'ifaddr>=0.1.7'],
)
0707010000001B000041ED000000000000000000000004631651AD00000000000000000000000000000000000000000000001D00000000python-zeroconf-0.39.1/tests0707010000001C000081A4000000000000000000000001631651AD00000971000000000000000000000000000000000000002900000000python-zeroconf-0.39.1/tests/__init__.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import asyncio
import socket
from functools import lru_cache
from typing import List
import ifaddr
from zeroconf import DNSIncoming, Zeroconf
def _inject_responses(zc: Zeroconf, msgs: List[DNSIncoming]) -> None:
"""Inject a DNSIncoming response."""
assert zc.loop is not None
async def _wait_for_response():
for msg in msgs:
zc.handle_response(msg)
asyncio.run_coroutine_threadsafe(_wait_for_response(), zc.loop).result()
def _inject_response(zc: Zeroconf, msg: DNSIncoming) -> None:
"""Inject a DNSIncoming response."""
_inject_responses(zc, [msg])
def _wait_for_start(zc: Zeroconf) -> None:
"""Wait for all sockets to be up and running."""
assert zc.loop is not None
asyncio.run_coroutine_threadsafe(zc.async_wait_for_start(), zc.loop).result()
@lru_cache(maxsize=None)
def has_working_ipv6():
"""Return True if if the system can bind an IPv6 address."""
if not socket.has_ipv6:
return False
sock = None
try:
sock = socket.socket(socket.AF_INET6)
sock.bind(('::1', 0))
except Exception:
return False
finally:
if sock:
sock.close()
for iface in ifaddr.get_adapters():
for addr in iface.ips:
if addr.is_IPv6 and iface.index is not None:
return True
return False
def _clear_cache(zc):
zc.cache.cache.clear()
zc.question_history._history.clear()
0707010000001D000081A4000000000000000000000001631651AD0000029D000000000000000000000000000000000000002900000000python-zeroconf-0.39.1/tests/conftest.py#!/usr/bin/env python
""" conftest for zeroconf tests. """
import threading
import pytest
import unittest
from zeroconf import _core, const
@pytest.fixture(autouse=True)
def verify_threads_ended():
"""Verify that the threads are not running after the test."""
threads_before = frozenset(threading.enumerate())
yield
threads = frozenset(threading.enumerate()) - threads_before
assert not threads
@pytest.fixture
def run_isolated():
"""Change the mDNS port to run the test in isolation."""
with unittest.mock.patch.object(_core, "_MDNS_PORT", 5454), unittest.mock.patch.object(
const, "_MDNS_PORT", 5454
):
yield
0707010000001E000041ED000000000000000000000002631651AD00000000000000000000000000000000000000000000002600000000python-zeroconf-0.39.1/tests/services0707010000001F000081A4000000000000000000000001631651AD000003CB000000000000000000000000000000000000003200000000python-zeroconf-0.39.1/tests/services/__init__.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
07070100000020000081A4000000000000000000000001631651AD0000A2EE000000000000000000000000000000000000003600000000python-zeroconf-0.39.1/tests/services/test_browser.py#!/usr/bin/env python
""" Unit tests for zeroconf._services.browser. """
import logging
import socket
import time
import os
import unittest
from threading import Event
from unittest.mock import patch
import pytest
import zeroconf as r
from zeroconf import DNSPointer, DNSQuestion, const, current_time_millis, millis_to_seconds
import zeroconf._services.browser as _services_browser
from zeroconf import _core, _handlers, Zeroconf
from zeroconf._services import ServiceStateChange
from zeroconf._services.browser import ServiceBrowser
from zeroconf._services.info import ServiceInfo
from zeroconf.asyncio import AsyncZeroconf
from .. import has_working_ipv6, _inject_response, _wait_for_start
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
def test_service_browser_cancel_multiple_times():
"""Test we can cancel a ServiceBrowser multiple times before close."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# start a browser
type_ = "_hap._tcp.local."
class MyServiceListener(r.ServiceListener):
pass
listener = MyServiceListener()
browser = r.ServiceBrowser(zc, type_, None, listener)
browser.cancel()
browser.cancel()
browser.cancel()
zc.close()
def test_service_browser_cancel_multiple_times_after_close():
"""Test we can cancel a ServiceBrowser multiple times after close."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# start a browser
type_ = "_hap._tcp.local."
class MyServiceListener(r.ServiceListener):
pass
listener = MyServiceListener()
browser = r.ServiceBrowser(zc, type_, None, listener)
zc.close()
browser.cancel()
browser.cancel()
browser.cancel()
def test_service_browser_started_after_zeroconf_closed():
"""Test starting a ServiceBrowser after close raises RuntimeError."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# start a browser
type_ = "_hap._tcp.local."
class MyServiceListener(r.ServiceListener):
pass
listener = MyServiceListener()
zc.close()
with pytest.raises(RuntimeError):
browser = r.ServiceBrowser(zc, type_, None, listener)
def test_multiple_instances_running_close():
"""Test we can shutdown multiple instances."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
zc2 = Zeroconf(interfaces=['127.0.0.1'])
zc3 = Zeroconf(interfaces=['127.0.0.1'])
assert zc.loop != zc2.loop
assert zc.loop != zc3.loop
class MyServiceListener(r.ServiceListener):
pass
listener = MyServiceListener()
zc2.add_service_listener("zca._hap._tcp.local.", listener)
zc.close()
zc2.remove_service_listener(listener)
zc2.close()
zc3.close()
class TestServiceBrowser(unittest.TestCase):
def test_update_record(self):
enable_ipv6 = has_working_ipv6() and not os.environ.get('SKIP_IPV6')
service_name = 'name._type._tcp.local.'
service_type = '_type._tcp.local.'
service_server = 'ash-1.local.'
service_text = b'path=/~matt1/'
service_address = '10.0.1.2'
service_v6_address = "2001:db8::1"
service_v6_second_address = "6001:db8::1"
service_added_count = 0
service_removed_count = 0
service_updated_count = 0
service_add_event = Event()
service_removed_event = Event()
service_updated_event = Event()
class MyServiceListener(r.ServiceListener):
def add_service(self, zc, type_, name) -> None:
nonlocal service_added_count
service_added_count += 1
service_add_event.set()
def remove_service(self, zc, type_, name) -> None:
nonlocal service_removed_count
service_removed_count += 1
service_removed_event.set()
def update_service(self, zc, type_, name) -> None:
nonlocal service_updated_count
service_updated_count += 1
service_info = zc.get_service_info(type_, name)
assert socket.inet_aton(service_address) in service_info.addresses
if enable_ipv6:
assert socket.inet_pton(
socket.AF_INET6, service_v6_address
) in service_info.addresses_by_version(r.IPVersion.V6Only)
assert socket.inet_pton(
socket.AF_INET6, service_v6_second_address
) in service_info.addresses_by_version(r.IPVersion.V6Only)
assert service_info.text == service_text
assert service_info.server == service_server
service_updated_event.set()
def mock_incoming_msg(service_state_change: r.ServiceStateChange) -> r.DNSIncoming:
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
assert generated.is_response() is True
if service_state_change == r.ServiceStateChange.Removed:
ttl = 0
else:
ttl = 120
generated.add_answer_at_time(
r.DNSText(
service_name, const._TYPE_TXT, const._CLASS_IN | const._CLASS_UNIQUE, ttl, service_text
),
0,
)
generated.add_answer_at_time(
r.DNSService(
service_name,
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
0,
0,
80,
service_server,
),
0,
)
# Send the IPv6 address first since we previously
# had a bug where the IPv4 would be missing if the
# IPv6 was seen first
if enable_ipv6:
generated.add_answer_at_time(
r.DNSAddress(
service_server,
const._TYPE_AAAA,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
socket.inet_pton(socket.AF_INET6, service_v6_address),
),
0,
)
generated.add_answer_at_time(
r.DNSAddress(
service_server,
const._TYPE_AAAA,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
socket.inet_pton(socket.AF_INET6, service_v6_second_address),
),
0,
)
generated.add_answer_at_time(
r.DNSAddress(
service_server,
const._TYPE_A,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
socket.inet_aton(service_address),
),
0,
)
generated.add_answer_at_time(
r.DNSPointer(service_type, const._TYPE_PTR, const._CLASS_IN, ttl, service_name), 0
)
return r.DNSIncoming(generated.packets()[0])
zeroconf = r.Zeroconf(interfaces=['127.0.0.1'])
service_browser = r.ServiceBrowser(zeroconf, service_type, listener=MyServiceListener())
try:
wait_time = 3
# service added
_inject_response(zeroconf, mock_incoming_msg(r.ServiceStateChange.Added))
service_add_event.wait(wait_time)
assert service_added_count == 1
assert service_updated_count == 0
assert service_removed_count == 0
# service SRV updated
service_updated_event.clear()
service_server = 'ash-2.local.'
_inject_response(zeroconf, mock_incoming_msg(r.ServiceStateChange.Updated))
service_updated_event.wait(wait_time)
assert service_added_count == 1
assert service_updated_count == 1
assert service_removed_count == 0
# service TXT updated
service_updated_event.clear()
service_text = b'path=/~matt2/'
_inject_response(zeroconf, mock_incoming_msg(r.ServiceStateChange.Updated))
service_updated_event.wait(wait_time)
assert service_added_count == 1
assert service_updated_count == 2
assert service_removed_count == 0
# service TXT updated - duplicate update should not trigger another service_updated
service_updated_event.clear()
service_text = b'path=/~matt2/'
_inject_response(zeroconf, mock_incoming_msg(r.ServiceStateChange.Updated))
service_updated_event.wait(wait_time)
assert service_added_count == 1
assert service_updated_count == 2
assert service_removed_count == 0
# service A updated
service_updated_event.clear()
service_address = '10.0.1.3'
# Verify we match on uppercase
service_server = service_server.upper()
_inject_response(zeroconf, mock_incoming_msg(r.ServiceStateChange.Updated))
service_updated_event.wait(wait_time)
assert service_added_count == 1
assert service_updated_count == 3
assert service_removed_count == 0
# service all updated
service_updated_event.clear()
service_server = 'ash-3.local.'
service_text = b'path=/~matt3/'
service_address = '10.0.1.3'
_inject_response(zeroconf, mock_incoming_msg(r.ServiceStateChange.Updated))
service_updated_event.wait(wait_time)
assert service_added_count == 1
assert service_updated_count == 4
assert service_removed_count == 0
# service removed
_inject_response(zeroconf, mock_incoming_msg(r.ServiceStateChange.Removed))
service_removed_event.wait(wait_time)
assert service_added_count == 1
assert service_updated_count == 4
assert service_removed_count == 1
finally:
assert len(zeroconf.listeners) == 1
service_browser.cancel()
time.sleep(0.2)
assert len(zeroconf.listeners) == 0
zeroconf.remove_all_service_listeners()
zeroconf.close()
class TestServiceBrowserMultipleTypes(unittest.TestCase):
def test_update_record(self):
service_names = ['name2._type2._tcp.local.', 'name._type._tcp.local.', 'name._type._udp.local']
service_types = ['_type2._tcp.local.', '_type._tcp.local.', '_type._udp.local.']
service_added_count = 0
service_removed_count = 0
service_add_event = Event()
service_removed_event = Event()
class MyServiceListener(r.ServiceListener):
def add_service(self, zc, type_, name) -> None:
nonlocal service_added_count
service_added_count += 1
if service_added_count == 3:
service_add_event.set()
def remove_service(self, zc, type_, name) -> None:
nonlocal service_removed_count
service_removed_count += 1
if service_removed_count == 3:
service_removed_event.set()
def mock_incoming_msg(
service_state_change: r.ServiceStateChange, service_type: str, service_name: str, ttl: int
) -> r.DNSIncoming:
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
generated.add_answer_at_time(
r.DNSPointer(service_type, const._TYPE_PTR, const._CLASS_IN, ttl, service_name), 0
)
return r.DNSIncoming(generated.packets()[0])
zeroconf = r.Zeroconf(interfaces=['127.0.0.1'])
service_browser = r.ServiceBrowser(zeroconf, service_types, listener=MyServiceListener())
try:
wait_time = 3
# all three services added
_inject_response(
zeroconf,
mock_incoming_msg(r.ServiceStateChange.Added, service_types[0], service_names[0], 120),
)
_inject_response(
zeroconf,
mock_incoming_msg(r.ServiceStateChange.Added, service_types[1], service_names[1], 120),
)
time.sleep(0.1)
called_with_refresh_time_check = False
def _mock_get_expiration_time(self, percent):
nonlocal called_with_refresh_time_check
if percent == const._EXPIRE_REFRESH_TIME_PERCENT:
called_with_refresh_time_check = True
return 0
return self.created + (percent * self.ttl * 10)
# Set an expire time that will force a refresh
with patch("zeroconf.DNSRecord.get_expiration_time", new=_mock_get_expiration_time):
_inject_response(
zeroconf,
mock_incoming_msg(r.ServiceStateChange.Added, service_types[0], service_names[0], 120),
)
# Add the last record after updating the first one
# to ensure the service_add_event only gets set
# after the update
_inject_response(
zeroconf,
mock_incoming_msg(r.ServiceStateChange.Added, service_types[2], service_names[2], 120),
)
service_add_event.wait(wait_time)
assert called_with_refresh_time_check is True
assert service_added_count == 3
assert service_removed_count == 0
_inject_response(
zeroconf,
mock_incoming_msg(r.ServiceStateChange.Updated, service_types[0], service_names[0], 0),
)
# all three services removed
_inject_response(
zeroconf,
mock_incoming_msg(r.ServiceStateChange.Removed, service_types[0], service_names[0], 0),
)
_inject_response(
zeroconf,
mock_incoming_msg(r.ServiceStateChange.Removed, service_types[1], service_names[1], 0),
)
_inject_response(
zeroconf,
mock_incoming_msg(r.ServiceStateChange.Removed, service_types[2], service_names[2], 0),
)
service_removed_event.wait(wait_time)
assert service_added_count == 3
assert service_removed_count == 3
finally:
assert len(zeroconf.listeners) == 1
service_browser.cancel()
time.sleep(0.2)
assert len(zeroconf.listeners) == 0
zeroconf.remove_all_service_listeners()
zeroconf.close()
def test_backoff():
got_query = Event()
type_ = "_http._tcp.local."
zeroconf_browser = Zeroconf(interfaces=['127.0.0.1'])
_wait_for_start(zeroconf_browser)
# we are going to patch the zeroconf send to check query transmission
old_send = zeroconf_browser.async_send
time_offset = 0.0
start_time = time.monotonic() * 1000
initial_query_interval = _services_browser._BROWSER_TIME / 1000
def current_time_millis():
"""Current system time in milliseconds"""
return start_time + time_offset * 1000
def send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT, v6_flow_scope=()):
"""Sends an outgoing packet."""
got_query.set()
old_send(out, addr=addr, port=port, v6_flow_scope=v6_flow_scope)
# patch the zeroconf send
# patch the zeroconf current_time_millis
# patch the backoff limit to prevent test running forever
with patch.object(zeroconf_browser, "async_send", send), patch.object(
zeroconf_browser.question_history, "suppresses", return_value=False
), patch.object(_services_browser, "current_time_millis", current_time_millis), patch.object(
_services_browser, "_BROWSER_BACKOFF_LIMIT", 10
), patch.object(
_services_browser, "_FIRST_QUERY_DELAY_RANDOM_INTERVAL", (0, 0)
):
# dummy service callback
def on_service_state_change(zeroconf, service_type, state_change, name):
pass
browser = ServiceBrowser(zeroconf_browser, type_, [on_service_state_change])
try:
# Test that queries are sent at increasing intervals
sleep_count = 0
next_query_interval = 0.0
expected_query_time = 0.0
while True:
sleep_count += 1
got_query.wait(0.1)
if time_offset == expected_query_time:
assert got_query.is_set()
got_query.clear()
if next_query_interval == _services_browser._BROWSER_BACKOFF_LIMIT:
# Only need to test up to the point where we've seen a query
# after the backoff limit has been hit
break
elif next_query_interval == 0:
next_query_interval = initial_query_interval
expected_query_time = initial_query_interval
else:
next_query_interval = min(
2 * next_query_interval, _services_browser._BROWSER_BACKOFF_LIMIT
)
expected_query_time += next_query_interval
else:
assert not got_query.is_set()
time_offset += initial_query_interval
zeroconf_browser.loop.call_soon_threadsafe(browser._async_send_ready_queries_schedule_next)
finally:
browser.cancel()
zeroconf_browser.close()
def test_first_query_delay():
"""Verify the first query is delayed.
https://datatracker.ietf.org/doc/html/rfc6762#section-5.2
"""
type_ = "_http._tcp.local."
zeroconf_browser = Zeroconf(interfaces=['127.0.0.1'])
_wait_for_start(zeroconf_browser)
# we are going to patch the zeroconf send to check query transmission
old_send = zeroconf_browser.async_send
first_query_time = None
def send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT):
"""Sends an outgoing packet."""
nonlocal first_query_time
if first_query_time is None:
first_query_time = current_time_millis()
old_send(out, addr=addr, port=port)
# patch the zeroconf send
with patch.object(zeroconf_browser, "async_send", send):
# dummy service callback
def on_service_state_change(zeroconf, service_type, state_change, name):
pass
start_time = current_time_millis()
browser = ServiceBrowser(zeroconf_browser, type_, [on_service_state_change])
time.sleep(millis_to_seconds(_services_browser._FIRST_QUERY_DELAY_RANDOM_INTERVAL[1] + 5))
try:
assert (
current_time_millis() - start_time > _services_browser._FIRST_QUERY_DELAY_RANDOM_INTERVAL[0]
)
finally:
browser.cancel()
zeroconf_browser.close()
def test_asking_default_is_asking_qm_questions_after_the_first_qu():
"""Verify the service browser's first question is QU and subsequent ones are QM questions."""
type_ = "_quservice._tcp.local."
zeroconf_browser = Zeroconf(interfaces=['127.0.0.1'])
# we are going to patch the zeroconf send to check query transmission
old_send = zeroconf_browser.async_send
first_outgoing = None
second_outgoing = None
def send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT):
"""Sends an outgoing packet."""
nonlocal first_outgoing
nonlocal second_outgoing
if first_outgoing is not None and second_outgoing is None:
second_outgoing = out
if first_outgoing is None:
first_outgoing = out
old_send(out, addr=addr, port=port)
# patch the zeroconf send
with patch.object(zeroconf_browser, "async_send", send):
# dummy service callback
def on_service_state_change(zeroconf, service_type, state_change, name):
pass
browser = ServiceBrowser(zeroconf_browser, type_, [on_service_state_change], delay=5)
time.sleep(millis_to_seconds(_services_browser._FIRST_QUERY_DELAY_RANDOM_INTERVAL[1] + 120 + 5))
try:
assert first_outgoing.questions[0].unicast == True
assert second_outgoing.questions[0].unicast == False
finally:
browser.cancel()
zeroconf_browser.close()
def test_asking_qm_questions():
"""Verify explictly asking QM questions."""
type_ = "_quservice._tcp.local."
zeroconf_browser = Zeroconf(interfaces=['127.0.0.1'])
# we are going to patch the zeroconf send to check query transmission
old_send = zeroconf_browser.async_send
first_outgoing = None
def send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT):
"""Sends an outgoing packet."""
nonlocal first_outgoing
if first_outgoing is None:
first_outgoing = out
old_send(out, addr=addr, port=port)
# patch the zeroconf send
with patch.object(zeroconf_browser, "async_send", send):
# dummy service callback
def on_service_state_change(zeroconf, service_type, state_change, name):
pass
browser = ServiceBrowser(
zeroconf_browser, type_, [on_service_state_change], question_type=r.DNSQuestionType.QM
)
time.sleep(millis_to_seconds(_services_browser._FIRST_QUERY_DELAY_RANDOM_INTERVAL[1] + 5))
try:
assert first_outgoing.questions[0].unicast == False
finally:
browser.cancel()
zeroconf_browser.close()
def test_asking_qu_questions():
"""Verify the service browser can ask QU questions."""
type_ = "_quservice._tcp.local."
zeroconf_browser = Zeroconf(interfaces=['127.0.0.1'])
# we are going to patch the zeroconf send to check query transmission
old_send = zeroconf_browser.async_send
first_outgoing = None
def send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT):
"""Sends an outgoing packet."""
nonlocal first_outgoing
if first_outgoing is None:
first_outgoing = out
old_send(out, addr=addr, port=port)
# patch the zeroconf send
with patch.object(zeroconf_browser, "async_send", send):
# dummy service callback
def on_service_state_change(zeroconf, service_type, state_change, name):
pass
browser = ServiceBrowser(
zeroconf_browser, type_, [on_service_state_change], question_type=r.DNSQuestionType.QU
)
time.sleep(millis_to_seconds(_services_browser._FIRST_QUERY_DELAY_RANDOM_INTERVAL[1] + 5))
try:
assert first_outgoing.questions[0].unicast == True
finally:
browser.cancel()
zeroconf_browser.close()
def test_legacy_record_update_listener():
"""Test a RecordUpdateListener that does not implement update_records."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
with pytest.raises(RuntimeError):
r.RecordUpdateListener().update_record(
zc, 0, r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL)
)
updates = []
class LegacyRecordUpdateListener(r.RecordUpdateListener):
"""A RecordUpdateListener that does not implement update_records."""
def update_record(self, zc: 'Zeroconf', now: float, record: r.DNSRecord) -> None:
nonlocal updates
updates.append(record)
listener = LegacyRecordUpdateListener()
zc.add_listener(listener, None)
# dummy service callback
def on_service_state_change(zeroconf, service_type, state_change, name):
pass
# start a browser
type_ = "_homeassistant._tcp.local."
name = "MyTestHome"
browser = ServiceBrowser(zc, type_, [on_service_state_change])
info_service = ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
{'path': '/~paulsm/'},
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
zc.register_service(info_service)
time.sleep(0.001)
browser.cancel()
assert len(updates)
assert len([isinstance(update, r.DNSPointer) and update.name == type_ for update in updates]) >= 1
zc.remove_listener(listener)
# Removing a second time should not throw
zc.remove_listener(listener)
zc.close()
def test_service_browser_is_aware_of_port_changes():
"""Test that the ServiceBrowser is aware of port changes."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# start a browser
type_ = "_hap._tcp.local."
registration_name = "xxxyyy.%s" % type_
callbacks = []
# dummy service callback
def on_service_state_change(zeroconf, service_type, state_change, name):
nonlocal callbacks
if name == registration_name:
callbacks.append((service_type, state_change, name))
browser = ServiceBrowser(zc, type_, [on_service_state_change])
desc = {'path': '/~paulsm/'}
address_parsed = "10.0.1.2"
address = socket.inet_aton(address_parsed)
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[address])
def mock_incoming_msg(records) -> r.DNSIncoming:
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
for record in records:
generated.add_answer_at_time(record, 0)
return r.DNSIncoming(generated.packets()[0])
_inject_response(
zc,
mock_incoming_msg([info.dns_pointer(), info.dns_service(), info.dns_text(), *info.dns_addresses()]),
)
time.sleep(0.1)
assert callbacks == [('_hap._tcp.local.', ServiceStateChange.Added, 'xxxyyy._hap._tcp.local.')]
assert zc.get_service_info(type_, registration_name).port == 80
info.port = 400
_inject_response(
zc,
mock_incoming_msg([info.dns_service()]),
)
time.sleep(0.1)
assert callbacks == [
('_hap._tcp.local.', ServiceStateChange.Added, 'xxxyyy._hap._tcp.local.'),
('_hap._tcp.local.', ServiceStateChange.Updated, 'xxxyyy._hap._tcp.local.'),
]
assert zc.get_service_info(type_, registration_name).port == 400
browser.cancel()
zc.close()
def test_service_browser_listeners_update_service():
"""Test that the ServiceBrowser ServiceListener that implements update_service."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# start a browser
type_ = "_hap._tcp.local."
registration_name = "xxxyyy.%s" % type_
callbacks = []
class MyServiceListener(r.ServiceListener):
def add_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("add", type_, name))
def remove_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("remove", type_, name))
def update_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("update", type_, name))
listener = MyServiceListener()
browser = r.ServiceBrowser(zc, type_, None, listener)
desc = {'path': '/~paulsm/'}
address_parsed = "10.0.1.2"
address = socket.inet_aton(address_parsed)
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[address])
def mock_incoming_msg(records) -> r.DNSIncoming:
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
for record in records:
generated.add_answer_at_time(record, 0)
return r.DNSIncoming(generated.packets()[0])
_inject_response(
zc,
mock_incoming_msg([info.dns_pointer(), info.dns_service(), info.dns_text(), *info.dns_addresses()]),
)
time.sleep(0.2)
info.port = 400
_inject_response(
zc,
mock_incoming_msg([info.dns_service()]),
)
time.sleep(0.2)
assert callbacks == [
('add', type_, registration_name),
('update', type_, registration_name),
]
browser.cancel()
zc.close()
def test_service_browser_listeners_no_update_service():
"""Test that the ServiceBrowser ServiceListener that does not implement update_service."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# start a browser
type_ = "_hap._tcp.local."
registration_name = "xxxyyy.%s" % type_
callbacks = []
class MyServiceListener:
def add_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("add", type_, name))
def remove_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("remove", type_, name))
listener = MyServiceListener()
browser = r.ServiceBrowser(zc, type_, None, listener)
desc = {'path': '/~paulsm/'}
address_parsed = "10.0.1.2"
address = socket.inet_aton(address_parsed)
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[address])
def mock_incoming_msg(records) -> r.DNSIncoming:
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
for record in records:
generated.add_answer_at_time(record, 0)
return r.DNSIncoming(generated.packets()[0])
_inject_response(
zc,
mock_incoming_msg([info.dns_pointer(), info.dns_service(), info.dns_text(), *info.dns_addresses()]),
)
time.sleep(0.2)
info.port = 400
_inject_response(
zc,
mock_incoming_msg([info.dns_service()]),
)
time.sleep(0.2)
assert callbacks == [
('add', type_, registration_name),
]
browser.cancel()
zc.close()
def test_servicebrowser_uses_non_strict_names():
"""Verify we can look for technically invalid names as we cannot change what others do."""
# dummy service callback
def on_service_state_change(zeroconf, service_type, state_change, name):
pass
zc = r.Zeroconf(interfaces=['127.0.0.1'])
browser = ServiceBrowser(zc, ["_tivo-videostream._tcp.local."], [on_service_state_change])
browser.cancel()
# Still fail on completely invalid
with pytest.raises(r.BadTypeInNameException):
browser = ServiceBrowser(zc, ["tivo-videostream._tcp.local."], [on_service_state_change])
zc.close()
def test_group_ptr_queries_with_known_answers():
questions_with_known_answers: _services_browser._QuestionWithKnownAnswers = {}
now = current_time_millis()
for i in range(120):
name = f"_hap{i}._tcp._local."
questions_with_known_answers[DNSQuestion(name, const._TYPE_PTR, const._CLASS_IN)] = {
DNSPointer(
name,
const._TYPE_PTR,
const._CLASS_IN,
4500,
f"zoo{counter}.{name}",
)
for counter in range(i)
}
outs = _services_browser._group_ptr_queries_with_known_answers(now, True, questions_with_known_answers)
for out in outs:
packets = out.packets()
# If we generate multiple packets there must
# only be one question
assert len(packets) == 1 or len(out.questions) == 1
# This test uses asyncio because it needs to access the cache directly
# which is not threadsafe
@pytest.mark.asyncio
async def test_generate_service_query_suppress_duplicate_questions():
"""Generate a service query for sending with zeroconf.send."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zc = aiozc.zeroconf
now = current_time_millis()
name = "_suppresstest._tcp.local."
question = r.DNSQuestion(name, const._TYPE_PTR, const._CLASS_IN)
answer = r.DNSPointer(
name,
const._TYPE_PTR,
const._CLASS_IN,
10000,
f'known-to-other.{name}',
)
other_known_answers = {answer}
zc.question_history.add_question_at_time(question, now, other_known_answers)
assert zc.question_history.suppresses(question, now, other_known_answers)
# The known answer list is different, do not suppress
outs = _services_browser.generate_service_query(zc, now, [name], multicast=True)
assert outs
zc.cache.async_add_records([answer])
# The known answer list contains all the asked questions in the history
# we should suppress
outs = _services_browser.generate_service_query(zc, now, [name], multicast=True)
assert not outs
# We do not suppress once the question history expires
outs = _services_browser.generate_service_query(zc, now + 1000, [name], multicast=True)
assert outs
# We do not suppress QU queries ever
outs = _services_browser.generate_service_query(zc, now, [name], multicast=False)
assert outs
zc.question_history.async_expire(now + 2000)
# No suppression after clearing the history
outs = _services_browser.generate_service_query(zc, now, [name], multicast=True)
assert outs
# The previous query we just sent is still remembered and
# the next one is suppressed
outs = _services_browser.generate_service_query(zc, now, [name], multicast=True)
assert not outs
await aiozc.async_close()
@pytest.mark.asyncio
async def test_query_scheduler():
delay = const._BROWSER_TIME
types_ = {"_hap._tcp.local.", "_http._tcp.local."}
query_scheduler = _services_browser.QueryScheduler(types_, delay, (0, 0))
now = current_time_millis()
query_scheduler.start(now)
# Test query interval is increasing
assert query_scheduler.millis_to_wait(now - 1) == 1
assert query_scheduler.millis_to_wait(now) == 0
assert query_scheduler.millis_to_wait(now + 1) == 0
assert set(query_scheduler.process_ready_types(now)) == types_
assert set(query_scheduler.process_ready_types(now)) == set()
assert query_scheduler.millis_to_wait(now) == pytest.approx(delay, 0.00001)
assert set(query_scheduler.process_ready_types(now + delay)) == types_
assert set(query_scheduler.process_ready_types(now + delay)) == set()
assert query_scheduler.millis_to_wait(now) == pytest.approx(delay * 3, 0.00001)
assert set(query_scheduler.process_ready_types(now + delay * 3)) == types_
assert set(query_scheduler.process_ready_types(now + delay * 3)) == set()
assert query_scheduler.millis_to_wait(now) == pytest.approx(delay * 7, 0.00001)
assert set(query_scheduler.process_ready_types(now + delay * 7)) == types_
assert set(query_scheduler.process_ready_types(now + delay * 7)) == set()
assert query_scheduler.millis_to_wait(now) == pytest.approx(delay * 15, 0.00001)
assert set(query_scheduler.process_ready_types(now + delay * 15)) == types_
assert set(query_scheduler.process_ready_types(now + delay * 15)) == set()
# Test if we reschedule 1 second later, the millis_to_wait goes up by 1
query_scheduler.reschedule_type("_hap._tcp.local.", now + delay * 16)
assert query_scheduler.millis_to_wait(now) == pytest.approx(delay * 16, 0.00001)
assert set(query_scheduler.process_ready_types(now + delay * 15)) == set()
# Test if we reschedule 1 second later... and its ready for processing
assert set(query_scheduler.process_ready_types(now + delay * 16)) == {"_hap._tcp.local."}
assert query_scheduler.millis_to_wait(now) == pytest.approx(delay * 31, 0.00001)
assert set(query_scheduler.process_ready_types(now + delay * 20)) == set()
assert set(query_scheduler.process_ready_types(now + delay * 31)) == {"_http._tcp.local."}
def test_service_browser_matching():
"""Test that the ServiceBrowser matching does not match partial names."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# start a browser
type_ = "_http._tcp.local."
registration_name = "xxxyyy.%s" % type_
not_match_type_ = "_asustor-looksgood_http._tcp.local."
not_match_registration_name = "xxxyyy.%s" % not_match_type_
callbacks = []
class MyServiceListener(r.ServiceListener):
def add_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("add", type_, name))
def remove_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("remove", type_, name))
def update_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("update", type_, name))
listener = MyServiceListener()
browser = r.ServiceBrowser(zc, type_, None, listener)
desc = {'path': '/~paulsm/'}
address_parsed = "10.0.1.2"
address = socket.inet_aton(address_parsed)
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[address])
should_not_match = ServiceInfo(
not_match_type_, not_match_registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[address]
)
def mock_incoming_msg(records) -> r.DNSIncoming:
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
for record in records:
generated.add_answer_at_time(record, 0)
return r.DNSIncoming(generated.packets()[0])
_inject_response(
zc,
mock_incoming_msg([info.dns_pointer(), info.dns_service(), info.dns_text(), *info.dns_addresses()]),
)
_inject_response(
zc,
mock_incoming_msg(
[
should_not_match.dns_pointer(),
should_not_match.dns_service(),
should_not_match.dns_text(),
*should_not_match.dns_addresses(),
]
),
)
time.sleep(0.2)
info.port = 400
_inject_response(
zc,
mock_incoming_msg([info.dns_service()]),
)
should_not_match.port = 400
_inject_response(
zc,
mock_incoming_msg([should_not_match.dns_service()]),
)
time.sleep(0.2)
assert callbacks == [
('add', type_, registration_name),
('update', type_, registration_name),
]
browser.cancel()
zc.close()
@patch.object(_handlers, '_DNS_PTR_MIN_TTL', 1)
@patch.object(_core, "_CACHE_CLEANUP_INTERVAL", 10)
def test_service_browser_expire_callbacks():
"""Test that the ServiceBrowser matching does not match partial names."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# start a browser
type_ = "_old._tcp.local."
registration_name = "uniquezip323.%s" % type_
callbacks = []
class MyServiceListener(r.ServiceListener):
def add_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("add", type_, name))
def remove_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("remove", type_, name))
def update_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("update", type_, name))
listener = MyServiceListener()
browser = r.ServiceBrowser(zc, type_, None, listener)
desc = {'path': '/~paul2/'}
address_parsed = "10.0.1.3"
address = socket.inet_aton(address_parsed)
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"newname-2.local.",
host_ttl=1,
other_ttl=1,
addresses=[address],
)
def mock_incoming_msg(records) -> r.DNSIncoming:
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
for record in records:
generated.add_answer_at_time(record, 0)
return r.DNSIncoming(generated.packets()[0])
_inject_response(
zc,
mock_incoming_msg([info.dns_pointer(), info.dns_service(), info.dns_text(), *info.dns_addresses()]),
)
time.sleep(0.3)
info.port = 400
_inject_response(
zc,
mock_incoming_msg([info.dns_service()]),
)
for _ in range(10):
time.sleep(0.05)
if len(callbacks) == 2:
break
assert callbacks == [
('add', type_, registration_name),
('update', type_, registration_name),
]
for _ in range(25):
time.sleep(0.05)
if len(callbacks) == 3:
break
assert callbacks == [
('add', type_, registration_name),
('update', type_, registration_name),
('remove', type_, registration_name),
]
browser.cancel()
zc.close()
07070100000021000081A4000000000000000000000001631651AD000077E4000000000000000000000000000000000000003300000000python-zeroconf-0.39.1/tests/services/test_info.py#!/usr/bin/env python
""" Unit tests for zeroconf._services.info. """
import asyncio
import logging
import socket
import threading
import os
import unittest
from unittest.mock import patch
from threading import Event
from typing import List
import pytest
import zeroconf as r
from zeroconf import DNSAddress, const
from zeroconf._services import types
from zeroconf._services.info import ServiceInfo
from zeroconf.asyncio import AsyncZeroconf
from .. import has_working_ipv6, _inject_response
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
class TestServiceInfo(unittest.TestCase):
def test_get_name(self):
"""Verify the name accessor can strip the type."""
desc = {'path': '/~paulsm/'}
service_name = 'name._type._tcp.local.'
service_type = '_type._tcp.local.'
service_server = 'ash-1.local.'
service_address = socket.inet_aton("10.0.1.2")
info = ServiceInfo(
service_type, service_name, 22, 0, 0, desc, service_server, addresses=[service_address]
)
assert info.get_name() == "name"
def test_service_info_rejects_non_matching_updates(self):
"""Verify records with the wrong name are rejected."""
zc = r.Zeroconf(interfaces=['127.0.0.1'])
desc = {'path': '/~paulsm/'}
service_name = 'name._type._tcp.local.'
service_type = '_type._tcp.local.'
service_server = 'ash-1.local.'
service_address = socket.inet_aton("10.0.1.2")
ttl = 120
now = r.current_time_millis()
info = ServiceInfo(
service_type, service_name, 22, 0, 0, desc, service_server, addresses=[service_address]
)
# Verify backwards compatiblity with calling with None
info.update_record(zc, now, None)
# Matching updates
info.update_record(
zc,
now,
r.DNSText(
service_name,
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==',
),
)
assert info.properties[b"ci"] == b"2"
info.update_record(
zc,
now,
r.DNSService(
service_name,
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
0,
0,
80,
'ASH-2.local.',
),
)
assert info.server_key == 'ash-2.local.'
assert info.server == 'ASH-2.local.'
new_address = socket.inet_aton("10.0.1.3")
info.update_record(
zc,
now,
r.DNSAddress(
'ASH-2.local.',
const._TYPE_A,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
new_address,
),
)
assert new_address in info.addresses
# Non-matching updates
info.update_record(
zc,
now,
r.DNSText(
"incorrect.name.",
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
b'\x04ff=0\x04ci=3\x04sf=0\x0bsh=6fLM5A==',
),
)
assert info.properties[b"ci"] == b"2"
info.update_record(
zc,
now,
r.DNSService(
"incorrect.name.",
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
0,
0,
80,
'ASH-2.local.',
),
)
assert info.server_key == 'ash-2.local.'
assert info.server == 'ASH-2.local.'
new_address = socket.inet_aton("10.0.1.4")
info.update_record(
zc,
now,
r.DNSAddress(
"incorrect.name.",
const._TYPE_A,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
new_address,
),
)
assert new_address not in info.addresses
zc.close()
def test_service_info_rejects_expired_records(self):
"""Verify records that are expired are rejected."""
zc = r.Zeroconf(interfaces=['127.0.0.1'])
desc = {'path': '/~paulsm/'}
service_name = 'name._type._tcp.local.'
service_type = '_type._tcp.local.'
service_server = 'ash-1.local.'
service_address = socket.inet_aton("10.0.1.2")
ttl = 120
now = r.current_time_millis()
info = ServiceInfo(
service_type, service_name, 22, 0, 0, desc, service_server, addresses=[service_address]
)
# Matching updates
info.update_record(
zc,
now,
r.DNSText(
service_name,
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==',
),
)
assert info.properties[b"ci"] == b"2"
# Expired record
expired_record = r.DNSText(
service_name,
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
b'\x04ff=0\x04ci=3\x04sf=0\x0bsh=6fLM5A==',
)
expired_record.set_created_ttl(1000, 1)
info.update_record(zc, now, expired_record)
assert info.properties[b"ci"] == b"2"
zc.close()
@unittest.skipIf(not has_working_ipv6(), 'Requires IPv6')
@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')
def test_get_info_partial(self):
zc = r.Zeroconf(interfaces=['127.0.0.1'])
service_name = 'name._type._tcp.local.'
service_type = '_type._tcp.local.'
service_server = 'ash-1.local.'
service_text = b'path=/~matt1/'
service_address = '10.0.1.2'
service_address_v6_ll = 'fe80::52e:c2f2:bc5f:e9c6'
service_scope_id = 12
service_info = None
send_event = Event()
service_info_event = Event()
last_sent = None # type: Optional[r.DNSOutgoing]
def send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT, v6_flow_scope=()):
"""Sends an outgoing packet."""
nonlocal last_sent
last_sent = out
send_event.set()
# patch the zeroconf send
with patch.object(zc, "async_send", send):
def mock_incoming_msg(records) -> r.DNSIncoming:
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
for record in records:
generated.add_answer_at_time(record, 0)
return r.DNSIncoming(generated.packets()[0])
def get_service_info_helper(zc, type, name):
nonlocal service_info
service_info = zc.get_service_info(type, name)
service_info_event.set()
try:
ttl = 120
helper_thread = threading.Thread(
target=get_service_info_helper, args=(zc, service_type, service_name)
)
helper_thread.start()
wait_time = 1
# Expext query for SRV, TXT, A, AAAA
send_event.wait(wait_time)
assert last_sent is not None
assert len(last_sent.questions) == 4
assert r.DNSQuestion(service_name, const._TYPE_SRV, const._CLASS_IN) in last_sent.questions
assert r.DNSQuestion(service_name, const._TYPE_TXT, const._CLASS_IN) in last_sent.questions
assert r.DNSQuestion(service_name, const._TYPE_A, const._CLASS_IN) in last_sent.questions
assert r.DNSQuestion(service_name, const._TYPE_AAAA, const._CLASS_IN) in last_sent.questions
assert service_info is None
# Expext query for SRV, A, AAAA
last_sent = None
send_event.clear()
_inject_response(
zc,
mock_incoming_msg(
[
r.DNSText(
service_name,
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
service_text,
)
]
),
)
send_event.wait(wait_time)
assert last_sent is not None
assert len(last_sent.questions) == 3
assert r.DNSQuestion(service_name, const._TYPE_SRV, const._CLASS_IN) in last_sent.questions
assert r.DNSQuestion(service_name, const._TYPE_A, const._CLASS_IN) in last_sent.questions
assert r.DNSQuestion(service_name, const._TYPE_AAAA, const._CLASS_IN) in last_sent.questions
assert service_info is None
# Expext query for A, AAAA
last_sent = None
send_event.clear()
_inject_response(
zc,
mock_incoming_msg(
[
r.DNSService(
service_name,
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
0,
0,
80,
service_server,
)
]
),
)
send_event.wait(wait_time)
assert last_sent is not None
assert len(last_sent.questions) == 2
assert r.DNSQuestion(service_server, const._TYPE_A, const._CLASS_IN) in last_sent.questions
assert r.DNSQuestion(service_server, const._TYPE_AAAA, const._CLASS_IN) in last_sent.questions
last_sent = None
assert service_info is None
# Expext no further queries
last_sent = None
send_event.clear()
_inject_response(
zc,
mock_incoming_msg(
[
r.DNSAddress(
service_server,
const._TYPE_A,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
socket.inet_pton(socket.AF_INET, service_address),
),
r.DNSAddress(
service_server,
const._TYPE_AAAA,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
socket.inet_pton(socket.AF_INET6, service_address_v6_ll),
scope_id=service_scope_id,
),
]
),
)
send_event.wait(wait_time)
assert last_sent is None
assert service_info is not None
finally:
helper_thread.join()
zc.remove_all_service_listeners()
zc.close()
def test_get_info_single(self):
zc = r.Zeroconf(interfaces=['127.0.0.1'])
service_name = 'name._type._tcp.local.'
service_type = '_type._tcp.local.'
service_server = 'ash-1.local.'
service_text = b'path=/~matt1/'
service_address = '10.0.1.2'
service_info = None
send_event = Event()
service_info_event = Event()
last_sent = None # type: Optional[r.DNSOutgoing]
def send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT, v6_flow_scope=()):
"""Sends an outgoing packet."""
nonlocal last_sent
last_sent = out
send_event.set()
# patch the zeroconf send
with patch.object(zc, "async_send", send):
def mock_incoming_msg(records) -> r.DNSIncoming:
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
for record in records:
generated.add_answer_at_time(record, 0)
return r.DNSIncoming(generated.packets()[0])
def get_service_info_helper(zc, type, name):
nonlocal service_info
service_info = zc.get_service_info(type, name)
service_info_event.set()
try:
ttl = 120
helper_thread = threading.Thread(
target=get_service_info_helper, args=(zc, service_type, service_name)
)
helper_thread.start()
wait_time = 1
# Expext query for SRV, TXT, A, AAAA
send_event.wait(wait_time)
assert last_sent is not None
assert len(last_sent.questions) == 4
assert r.DNSQuestion(service_name, const._TYPE_SRV, const._CLASS_IN) in last_sent.questions
assert r.DNSQuestion(service_name, const._TYPE_TXT, const._CLASS_IN) in last_sent.questions
assert r.DNSQuestion(service_name, const._TYPE_A, const._CLASS_IN) in last_sent.questions
assert r.DNSQuestion(service_name, const._TYPE_AAAA, const._CLASS_IN) in last_sent.questions
assert service_info is None
# Expext no further queries
last_sent = None
send_event.clear()
_inject_response(
zc,
mock_incoming_msg(
[
r.DNSText(
service_name,
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
service_text,
),
r.DNSService(
service_name,
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
0,
0,
80,
service_server,
),
r.DNSAddress(
service_server,
const._TYPE_A,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
socket.inet_pton(socket.AF_INET, service_address),
),
]
),
)
send_event.wait(wait_time)
assert last_sent is None
assert service_info is not None
finally:
helper_thread.join()
zc.remove_all_service_listeners()
zc.close()
def test_service_info_duplicate_properties_txt_records(self):
"""Verify the first property is always used when there are duplicates in a txt record."""
zc = r.Zeroconf(interfaces=['127.0.0.1'])
desc = {'path': '/~paulsm/'}
service_name = 'name._type._tcp.local.'
service_type = '_type._tcp.local.'
service_server = 'ash-1.local.'
service_address = socket.inet_aton("10.0.1.2")
ttl = 120
now = r.current_time_millis()
info = ServiceInfo(
service_type, service_name, 22, 0, 0, desc, service_server, addresses=[service_address]
)
info.async_update_records(
zc,
now,
[
r.RecordUpdate(
r.DNSText(
service_name,
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==\x04dd=0\x04jl=2\x04qq=0\x0brr=6fLM5A==\x04ci=3',
),
None,
)
],
)
assert info.properties[b"dd"] == b"0"
assert info.properties[b"jl"] == b"2"
assert info.properties[b"ci"] == b"2"
zc.close()
def test_multiple_addresses():
type_ = "_http._tcp.local."
registration_name = "xxxyyy.%s" % type_
desc = {'path': '/~paulsm/'}
address_parsed = "10.0.1.2"
address = socket.inet_aton(address_parsed)
# New kwarg way
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[address, address])
assert info.addresses == [address, address]
assert info.parsed_addresses() == [address_parsed, address_parsed]
assert info.parsed_scoped_addresses() == [address_parsed, address_parsed]
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
parsed_addresses=[address_parsed, address_parsed],
)
assert info.addresses == [address, address]
assert info.parsed_addresses() == [address_parsed, address_parsed]
assert info.parsed_scoped_addresses() == [address_parsed, address_parsed]
if has_working_ipv6() and not os.environ.get('SKIP_IPV6'):
address_v6_parsed = "2001:db8::1"
address_v6 = socket.inet_pton(socket.AF_INET6, address_v6_parsed)
address_v6_ll_parsed = "fe80::52e:c2f2:bc5f:e9c6"
address_v6_ll_scoped_parsed = "fe80::52e:c2f2:bc5f:e9c6%12"
address_v6_ll = socket.inet_pton(socket.AF_INET6, address_v6_ll_parsed)
interface_index = 12
infos = [
ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[address, address_v6, address_v6_ll],
interface_index=interface_index,
),
ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
parsed_addresses=[address_parsed, address_v6_parsed, address_v6_ll_parsed],
interface_index=interface_index,
),
]
for info in infos:
assert info.addresses == [address]
assert info.addresses_by_version(r.IPVersion.All) == [address, address_v6, address_v6_ll]
assert info.addresses_by_version(r.IPVersion.V4Only) == [address]
assert info.addresses_by_version(r.IPVersion.V6Only) == [address_v6, address_v6_ll]
assert info.parsed_addresses() == [address_parsed, address_v6_parsed, address_v6_ll_parsed]
assert info.parsed_addresses(r.IPVersion.V4Only) == [address_parsed]
assert info.parsed_addresses(r.IPVersion.V6Only) == [address_v6_parsed, address_v6_ll_parsed]
assert info.parsed_scoped_addresses() == [
address_v6_ll_scoped_parsed,
address_parsed,
address_v6_parsed,
]
assert info.parsed_scoped_addresses(r.IPVersion.V4Only) == [address_parsed]
assert info.parsed_scoped_addresses(r.IPVersion.V6Only) == [
address_v6_ll_scoped_parsed,
address_v6_parsed,
]
# This test uses asyncio because it needs to access the cache directly
# which is not threadsafe
@pytest.mark.asyncio
async def test_multiple_a_addresses_newest_address_first():
"""Test that info.addresses returns the newest seen address first."""
type_ = "_http._tcp.local."
registration_name = "multiarec.%s" % type_
desc = {'path': '/~paulsm/'}
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
cache = aiozc.zeroconf.cache
host = "multahost.local."
record1 = r.DNSAddress(host, const._TYPE_A, const._CLASS_IN, 1000, b'\x7f\x00\x00\x01')
record2 = r.DNSAddress(host, const._TYPE_A, const._CLASS_IN, 1000, b'\x7f\x00\x00\x02')
cache.async_add_records([record1, record2])
# New kwarg way
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, host)
info.load_from_cache(aiozc.zeroconf)
assert info.addresses == [b'\x7f\x00\x00\x02', b'\x7f\x00\x00\x01']
await aiozc.async_close()
@pytest.mark.asyncio
async def test_invalid_a_addresses(caplog):
type_ = "_http._tcp.local."
registration_name = "multiarec.%s" % type_
desc = {'path': '/~paulsm/'}
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
cache = aiozc.zeroconf.cache
host = "multahost.local."
record1 = r.DNSAddress(host, const._TYPE_A, const._CLASS_IN, 1000, b'a')
record2 = r.DNSAddress(host, const._TYPE_A, const._CLASS_IN, 1000, b'b')
cache.async_add_records([record1, record2])
# New kwarg way
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, host)
info.load_from_cache(aiozc.zeroconf)
assert not info.addresses
assert "Encountered invalid address while processing record" in caplog.text
await aiozc.async_close()
@unittest.skipIf(not has_working_ipv6(), 'Requires IPv6')
@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')
def test_filter_address_by_type_from_service_info():
"""Verify dns_addresses can filter by ipversion."""
desc = {'path': '/~paulsm/'}
type_ = "_homeassistant._tcp.local."
name = "MyTestHome"
registration_name = f"{name}.{type_}"
ipv4 = socket.inet_aton("10.0.1.2")
ipv6 = socket.inet_pton(socket.AF_INET6, "2001:db8::1")
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[ipv4, ipv6])
def dns_addresses_to_addresses(dns_address: List[DNSAddress]):
return [address.address for address in dns_address]
assert dns_addresses_to_addresses(info.dns_addresses()) == [ipv4, ipv6]
assert dns_addresses_to_addresses(info.dns_addresses(version=r.IPVersion.All)) == [ipv4, ipv6]
assert dns_addresses_to_addresses(info.dns_addresses(version=r.IPVersion.V4Only)) == [ipv4]
assert dns_addresses_to_addresses(info.dns_addresses(version=r.IPVersion.V6Only)) == [ipv6]
def test_changing_name_updates_serviceinfo_key():
"""Verify a name change will adjust the underlying key value."""
type_ = "_homeassistant._tcp.local."
name = "MyTestHome"
info_service = ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
{'path': '/~paulsm/'},
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
assert info_service.key == "mytesthome._homeassistant._tcp.local."
info_service.name = "YourTestHome._homeassistant._tcp.local."
assert info_service.key == "yourtesthome._homeassistant._tcp.local."
def test_serviceinfo_address_updates():
"""Verify adding/removing/setting addresses on ServiceInfo."""
type_ = "_homeassistant._tcp.local."
name = "MyTestHome"
# Verify addresses and parsed_addresses are mutually exclusive
with pytest.raises(TypeError):
info_service = ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
{'path': '/~paulsm/'},
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
parsed_addresses=["10.0.1.2"],
)
info_service = ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
{'path': '/~paulsm/'},
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
info_service.addresses = [socket.inet_aton("10.0.1.3")]
assert info_service.addresses == [socket.inet_aton("10.0.1.3")]
def test_serviceinfo_accepts_bytes_or_string_dict():
"""Verify a bytes or string dict can be passed to ServiceInfo."""
type_ = "_homeassistant._tcp.local."
name = "MyTestHome"
addresses = [socket.inet_aton("10.0.1.2")]
server_name = "ash-2.local."
info_service = ServiceInfo(
type_, f'{name}.{type_}', 80, 0, 0, {b'path': b'/~paulsm/'}, server_name, addresses=addresses
)
assert info_service.dns_text().text == b'\x0epath=/~paulsm/'
info_service = ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
{'path': '/~paulsm/'},
server_name,
addresses=addresses,
)
assert info_service.dns_text().text == b'\x0epath=/~paulsm/'
info_service = ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
{b'path': '/~paulsm/'},
server_name,
addresses=addresses,
)
assert info_service.dns_text().text == b'\x0epath=/~paulsm/'
info_service = ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
{'path': b'/~paulsm/'},
server_name,
addresses=addresses,
)
assert info_service.dns_text().text == b'\x0epath=/~paulsm/'
def test_asking_qu_questions():
"""Verify explictly asking QU questions."""
type_ = "_quservice._tcp.local."
zeroconf = r.Zeroconf(interfaces=['127.0.0.1'])
# we are going to patch the zeroconf send to check query transmission
old_send = zeroconf.async_send
first_outgoing = None
def send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT):
"""Sends an outgoing packet."""
nonlocal first_outgoing
if first_outgoing is None:
first_outgoing = out
old_send(out, addr=addr, port=port)
# patch the zeroconf send
with patch.object(zeroconf, "async_send", send):
zeroconf.get_service_info(f"name.{type_}", type_, 500, question_type=r.DNSQuestionType.QU)
assert first_outgoing.questions[0].unicast == True
zeroconf.close()
def test_asking_qm_questions():
"""Verify explictly asking QM questions."""
type_ = "_quservice._tcp.local."
zeroconf = r.Zeroconf(interfaces=['127.0.0.1'])
# we are going to patch the zeroconf send to check query transmission
old_send = zeroconf.async_send
first_outgoing = None
def send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT):
"""Sends an outgoing packet."""
nonlocal first_outgoing
if first_outgoing is None:
first_outgoing = out
old_send(out, addr=addr, port=port)
# patch the zeroconf send
with patch.object(zeroconf, "async_send", send):
zeroconf.get_service_info(f"name.{type_}", type_, 500, question_type=r.DNSQuestionType.QM)
assert first_outgoing.questions[0].unicast == False
zeroconf.close()
def test_request_timeout():
"""Test that the timeout does not throw an exception and finishes close to the actual timeout."""
zeroconf = r.Zeroconf(interfaces=['127.0.0.1'])
start_time = r.current_time_millis()
assert zeroconf.get_service_info("_notfound.local.", "notthere._notfound.local.") is None
end_time = r.current_time_millis()
zeroconf.close()
# 3000ms for the default timeout
# 1000ms for loaded systems + schedule overhead
assert (end_time - start_time) < 3000 + 1000
@pytest.mark.asyncio
async def test_we_try_four_times_with_random_delay():
"""Verify we try four times even with the random delay."""
type_ = "_typethatisnothere._tcp.local."
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
# we are going to patch the zeroconf send to check query transmission
request_count = 0
def async_send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT):
"""Sends an outgoing packet."""
nonlocal request_count
request_count += 1
# patch the zeroconf send
with patch.object(aiozc.zeroconf, "async_send", async_send):
await aiozc.async_get_service_info(f"willnotbefound.{type_}", type_)
await aiozc.async_close()
assert request_count == 4
@pytest.mark.asyncio
async def test_release_wait_when_new_recorded_added():
"""Test that async_request returns as soon as new matching records are added to the cache."""
type_ = "_http._tcp.local."
registration_name = "multiarec.%s" % type_
desc = {'path': '/~paulsm/'}
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
host = "multahost.local."
# New kwarg way
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, host)
task = asyncio.create_task(info.async_request(aiozc.zeroconf, timeout=200))
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
generated.add_answer_at_time(
r.DNSNsec(
registration_name,
const._TYPE_NSEC,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
registration_name,
[const._TYPE_AAAA],
),
0,
)
generated.add_answer_at_time(
r.DNSService(
registration_name,
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
10000,
0,
0,
80,
host,
),
0,
)
generated.add_answer_at_time(
r.DNSAddress(
host,
const._TYPE_A,
const._CLASS_IN,
10000,
b'\x7f\x00\x00\x01',
),
0,
)
generated.add_answer_at_time(
r.DNSText(
registration_name,
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
10000,
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==',
),
0,
)
await aiozc.zeroconf.async_wait_for_start()
await asyncio.sleep(0)
aiozc.zeroconf.handle_response(r.DNSIncoming(generated.packets()[0]))
assert await asyncio.wait_for(task, timeout=2)
assert info.addresses == [b'\x7f\x00\x00\x01']
await aiozc.async_close()
07070100000022000081A4000000000000000000000001631651AD0000133B000000000000000000000000000000000000003700000000python-zeroconf-0.39.1/tests/services/test_registry.py#!/usr/bin/env python
"""Unit tests for zeroconf._services.registry."""
import unittest
import socket
import zeroconf as r
from zeroconf import ServiceInfo
class TestServiceRegistry(unittest.TestCase):
def test_only_register_once(self):
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
registry = r.ServiceRegistry()
registry.async_add(info)
self.assertRaises(r.ServiceNameAlreadyRegistered, registry.async_add, info)
registry.async_remove(info)
registry.async_add(info)
def test_register_same_server(self):
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
name2 = "xxxyyy2"
registration_name = f"{name}.{type_}"
registration_name2 = f"{name2}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "same.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
info2 = ServiceInfo(
type_, registration_name2, 80, 0, 0, desc, "same.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
registry = r.ServiceRegistry()
registry.async_add(info)
registry.async_add(info2)
assert registry.async_get_infos_server("same.local.") == [info, info2]
registry.async_remove(info)
assert registry.async_get_infos_server("same.local.") == [info2]
registry.async_remove(info2)
assert registry.async_get_infos_server("same.local.") == []
def test_unregister_multiple_times(self):
"""Verify we can unregister a service multiple times.
In production unregister_service and unregister_all_services
may happen at the same time during shutdown. We want to treat
this as non-fatal since its expected to happen and it is unlikely
that the callers know about each other.
"""
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
registry = r.ServiceRegistry()
registry.async_add(info)
self.assertRaises(r.ServiceNameAlreadyRegistered, registry.async_add, info)
registry.async_remove(info)
registry.async_remove(info)
def test_lookups(self):
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
registry = r.ServiceRegistry()
registry.async_add(info)
assert registry.async_get_service_infos() == [info]
assert registry.async_get_info_name(registration_name) == info
assert registry.async_get_infos_type(type_) == [info]
assert registry.async_get_infos_server("ash-2.local.") == [info]
assert registry.async_get_types() == [type_]
def test_lookups_upper_case_by_lower_case(self):
type_ = "_test-SRVC-type._tcp.local."
name = "Xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ASH-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
registry = r.ServiceRegistry()
registry.async_add(info)
assert registry.async_get_service_infos() == [info]
assert registry.async_get_info_name(registration_name.lower()) == info
assert registry.async_get_infos_type(type_.lower()) == [info]
assert registry.async_get_infos_server("ash-2.local.") == [info]
assert registry.async_get_types() == [type_.lower()]
def test_lookups_lower_case_by_upper_case(self):
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
registry = r.ServiceRegistry()
registry.async_add(info)
assert registry.async_get_service_infos() == [info]
assert registry.async_get_info_name(registration_name.upper()) == info
assert registry.async_get_infos_type(type_.upper()) == [info]
assert registry.async_get_infos_server("ASH-2.local.") == [info]
assert registry.async_get_types() == [type_]
07070100000023000081A4000000000000000000000001631651AD00001881000000000000000000000000000000000000003400000000python-zeroconf-0.39.1/tests/services/test_types.py#!/usr/bin/env python
"""Unit tests for zeroconf._services.types."""
import logging
import os
import unittest
import socket
import sys
from unittest.mock import patch
import zeroconf as r
from zeroconf import Zeroconf, ServiceInfo, ZeroconfServiceTypes
from .. import _clear_cache, has_working_ipv6
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
class ServiceTypesQuery(unittest.TestCase):
def test_integration_with_listener(self):
type_ = "_test-listen-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
zeroconf_registrar = Zeroconf(interfaces=['127.0.0.1'])
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
zeroconf_registrar.registry.async_add(info)
try:
with patch.object(
zeroconf_registrar.engine.protocols[0], "suppress_duplicate_packet", return_value=False
), patch.object(
zeroconf_registrar.engine.protocols[1], "suppress_duplicate_packet", return_value=False
):
service_types = ZeroconfServiceTypes.find(interfaces=['127.0.0.1'], timeout=2)
assert type_ in service_types
_clear_cache(zeroconf_registrar)
service_types = ZeroconfServiceTypes.find(zc=zeroconf_registrar, timeout=2)
assert type_ in service_types
finally:
zeroconf_registrar.close()
@unittest.skipIf(not has_working_ipv6(), 'Requires IPv6')
@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')
def test_integration_with_listener_v6_records(self):
type_ = "_test-listenv6rec-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
addr = "2606:2800:220:1:248:1893:25c8:1946" # example.com
zeroconf_registrar = Zeroconf(interfaces=['127.0.0.1'])
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_pton(socket.AF_INET6, addr)],
)
zeroconf_registrar.registry.async_add(info)
try:
with patch.object(
zeroconf_registrar.engine.protocols[0], "suppress_duplicate_packet", return_value=False
), patch.object(
zeroconf_registrar.engine.protocols[1], "suppress_duplicate_packet", return_value=False
):
service_types = ZeroconfServiceTypes.find(interfaces=['127.0.0.1'], timeout=2)
assert type_ in service_types
_clear_cache(zeroconf_registrar)
service_types = ZeroconfServiceTypes.find(zc=zeroconf_registrar, timeout=2)
assert type_ in service_types
finally:
zeroconf_registrar.close()
@unittest.skipIf(not has_working_ipv6() or sys.platform == 'win32', 'Requires IPv6')
@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')
def test_integration_with_listener_ipv6(self):
type_ = "_test-listenv6ip-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
addr = "2606:2800:220:1:248:1893:25c8:1946" # example.com
zeroconf_registrar = Zeroconf(ip_version=r.IPVersion.V6Only)
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_pton(socket.AF_INET6, addr)],
)
zeroconf_registrar.registry.async_add(info)
try:
with patch.object(
zeroconf_registrar.engine.protocols[0], "suppress_duplicate_packet", return_value=False
), patch.object(
zeroconf_registrar.engine.protocols[1], "suppress_duplicate_packet", return_value=False
):
service_types = ZeroconfServiceTypes.find(ip_version=r.IPVersion.V6Only, timeout=2)
assert type_ in service_types
_clear_cache(zeroconf_registrar)
service_types = ZeroconfServiceTypes.find(zc=zeroconf_registrar, timeout=2)
assert type_ in service_types
finally:
zeroconf_registrar.close()
def test_integration_with_subtype_and_listener(self):
subtype_ = "_subtype._sub"
type_ = "_listen._tcp.local."
name = "xxxyyy"
# Note: discovery returns only DNS-SD type not subtype
discovery_type = f"{subtype_}.{type_}"
registration_name = f"{name}.{type_}"
zeroconf_registrar = Zeroconf(interfaces=['127.0.0.1'])
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
discovery_type,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
zeroconf_registrar.registry.async_add(info)
try:
with patch.object(
zeroconf_registrar.engine.protocols[0], "suppress_duplicate_packet", return_value=False
), patch.object(
zeroconf_registrar.engine.protocols[1], "suppress_duplicate_packet", return_value=False
):
service_types = ZeroconfServiceTypes.find(interfaces=['127.0.0.1'], timeout=2)
assert discovery_type in service_types
_clear_cache(zeroconf_registrar)
service_types = ZeroconfServiceTypes.find(zc=zeroconf_registrar, timeout=2)
assert discovery_type in service_types
finally:
zeroconf_registrar.close()
07070100000024000081A4000000000000000000000001631651AD00009AA8000000000000000000000000000000000000002D00000000python-zeroconf-0.39.1/tests/test_asyncio.py#!/usr/bin/env python
"""Unit tests for aio.py."""
import asyncio
import logging
import os
import socket
import time
import threading
from unittest.mock import ANY, call, patch, MagicMock
import pytest
from zeroconf.asyncio import AsyncServiceBrowser, AsyncServiceInfo, AsyncZeroconf, AsyncZeroconfServiceTypes
from zeroconf import (
DNSIncoming,
DNSOutgoing,
DNSQuestion,
DNSPointer,
DNSService,
DNSAddress,
DNSText,
NotRunningException,
ServiceStateChange,
Zeroconf,
const,
)
from zeroconf.const import _LISTENER_TIME
from zeroconf._core import AsyncListener
from zeroconf._exceptions import BadTypeInNameException, NonUniqueNameException, ServiceNameAlreadyRegistered
from zeroconf._services import ServiceListener
import zeroconf._services.browser as _services_browser
from zeroconf._services.info import ServiceInfo
from zeroconf._utils.time import current_time_millis
from . import _clear_cache, has_working_ipv6
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
@pytest.fixture(autouse=True)
def verify_threads_ended():
"""Verify that the threads are not running after the test."""
threads_before = frozenset(threading.enumerate())
yield
threads_after = frozenset(threading.enumerate())
non_executor_threads = frozenset(
thread
for thread in threads_after
if "asyncio" not in thread.name and "ThreadPoolExecutor" not in thread.name
)
threads = non_executor_threads - threads_before
assert not threads
@pytest.mark.asyncio
async def test_async_basic_usage() -> None:
"""Test we can create and close the instance."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
await aiozc.async_close()
@pytest.mark.asyncio
async def test_async_close_twice() -> None:
"""Test we can close twice."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
await aiozc.async_close()
await aiozc.async_close()
@pytest.mark.asyncio
async def test_async_with_sync_passed_in() -> None:
"""Test we can create and close the instance when passing in a sync Zeroconf."""
zc = Zeroconf(interfaces=['127.0.0.1'])
aiozc = AsyncZeroconf(zc=zc)
assert aiozc.zeroconf is zc
await aiozc.async_close()
@pytest.mark.asyncio
async def test_async_with_sync_passed_in_closed_in_async() -> None:
"""Test caller closes the sync version in async."""
zc = Zeroconf(interfaces=['127.0.0.1'])
aiozc = AsyncZeroconf(zc=zc)
assert aiozc.zeroconf is zc
zc.close()
await aiozc.async_close()
@pytest.mark.asyncio
async def test_sync_within_event_loop_executor() -> None:
"""Test sync version still works from an executor within an event loop."""
def sync_code():
zc = Zeroconf(interfaces=['127.0.0.1'])
assert zc.get_service_info("_neverused._tcp.local.", "xneverused._neverused._tcp.local.", 10) is None
zc.close()
await asyncio.get_event_loop().run_in_executor(None, sync_code)
@pytest.mark.asyncio
async def test_async_service_registration() -> None:
"""Test registering services broadcasts the registration by default."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
type_ = "_test1-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
calls = []
class MyListener(ServiceListener):
def add_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("add", type, name))
def remove_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("remove", type, name))
def update_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("update", type, name))
listener = MyListener()
aiozc.zeroconf.add_service_listener(type_, listener)
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
task = await aiozc.async_register_service(info)
await task
new_info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.3")],
)
task = await aiozc.async_update_service(new_info)
await task
task = await aiozc.async_unregister_service(new_info)
await task
await aiozc.async_close()
assert calls == [
('add', type_, registration_name),
('update', type_, registration_name),
('remove', type_, registration_name),
]
@pytest.mark.asyncio
async def test_async_service_registration_same_server_different_ports() -> None:
"""Test registering services with the same server with different srv records."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
type_ = "_test1-srvc-type._tcp.local."
name = "xxxyyy"
name2 = "xxxyyy2"
registration_name = f"{name}.{type_}"
registration_name2 = f"{name2}.{type_}"
calls = []
class MyListener(ServiceListener):
def add_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("add", type, name))
def remove_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("remove", type, name))
def update_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("update", type, name))
listener = MyListener()
aiozc.zeroconf.add_service_listener(type_, listener)
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
info2 = ServiceInfo(
type_,
registration_name2,
81,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
tasks = []
tasks.append(await aiozc.async_register_service(info))
tasks.append(await aiozc.async_register_service(info2))
await asyncio.gather(*tasks)
task = await aiozc.async_unregister_service(info)
await task
entries = aiozc.zeroconf.cache.async_entries_with_server("ash-2.local.")
assert len(entries) == 1
assert info2.dns_service() in entries
await aiozc.async_close()
assert calls == [
('add', type_, registration_name),
('add', type_, registration_name2),
('remove', type_, registration_name),
('remove', type_, registration_name2),
]
@pytest.mark.asyncio
async def test_async_service_registration_same_server_same_ports() -> None:
"""Test registering services with the same server with the exact same srv record."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
type_ = "_test1-srvc-type._tcp.local."
name = "xxxyyy"
name2 = "xxxyyy2"
registration_name = f"{name}.{type_}"
registration_name2 = f"{name2}.{type_}"
calls = []
class MyListener(ServiceListener):
def add_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("add", type, name))
def remove_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("remove", type, name))
def update_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("update", type, name))
listener = MyListener()
aiozc.zeroconf.add_service_listener(type_, listener)
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
info2 = ServiceInfo(
type_,
registration_name2,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
tasks = []
tasks.append(await aiozc.async_register_service(info))
tasks.append(await aiozc.async_register_service(info2))
await asyncio.gather(*tasks)
task = await aiozc.async_unregister_service(info)
await task
entries = aiozc.zeroconf.cache.async_entries_with_server("ash-2.local.")
assert len(entries) == 1
assert info2.dns_service() in entries
await aiozc.async_close()
assert calls == [
('add', type_, registration_name),
('add', type_, registration_name2),
('remove', type_, registration_name),
('remove', type_, registration_name2),
]
@pytest.mark.asyncio
async def test_async_service_registration_name_conflict() -> None:
"""Test registering services throws on name conflict."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
type_ = "_test-srvc2-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
task = await aiozc.async_register_service(info)
await task
with pytest.raises(NonUniqueNameException):
task = await aiozc.async_register_service(info)
await task
with pytest.raises(ServiceNameAlreadyRegistered):
task = await aiozc.async_register_service(info, cooperating_responders=True)
await task
conflicting_info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-3.local.",
addresses=[socket.inet_aton("10.0.1.3")],
)
with pytest.raises(NonUniqueNameException):
task = await aiozc.async_register_service(conflicting_info)
await task
await aiozc.async_close()
@pytest.mark.asyncio
async def test_async_service_registration_name_does_not_match_type() -> None:
"""Test registering services throws when the name does not match the type."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
type_ = "_test-srvc3-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
info.type = "_wrong._tcp.local."
with pytest.raises(BadTypeInNameException):
task = await aiozc.async_register_service(info)
await task
await aiozc.async_close()
@pytest.mark.asyncio
async def test_async_tasks() -> None:
"""Test awaiting broadcast tasks"""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
type_ = "_test-srvc4-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
calls = []
class MyListener(ServiceListener):
def add_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("add", type, name))
def remove_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("remove", type, name))
def update_service(self, zeroconf: Zeroconf, type: str, name: str) -> None:
calls.append(("update", type, name))
listener = MyListener()
aiozc.zeroconf.add_service_listener(type_, listener)
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
task = await aiozc.async_register_service(info)
assert isinstance(task, asyncio.Task)
await task
new_info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.3")],
)
task = await aiozc.async_update_service(new_info)
assert isinstance(task, asyncio.Task)
await task
task = await aiozc.async_unregister_service(new_info)
assert isinstance(task, asyncio.Task)
await task
await aiozc.async_close()
assert calls == [
('add', type_, registration_name),
('update', type_, registration_name),
('remove', type_, registration_name),
]
@pytest.mark.asyncio
async def test_async_wait_unblocks_on_update() -> None:
"""Test async_wait will unblock on update."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
type_ = "_test-srvc4-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
task = await aiozc.async_register_service(info)
# Should unblock due to update from the
# registration
now = current_time_millis()
await aiozc.zeroconf.async_wait(50000)
assert current_time_millis() - now < 3000
await task
now = current_time_millis()
await aiozc.zeroconf.async_wait(50)
assert current_time_millis() - now < 1000
await aiozc.async_close()
@pytest.mark.asyncio
async def test_service_info_async_request() -> None:
"""Test registering services broadcasts and query with AsyncServceInfo.async_request."""
if not has_working_ipv6() or os.environ.get('SKIP_IPV6'):
pytest.skip('Requires IPv6')
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
type_ = "_test1-srvc-type._tcp.local."
name = "xxxyyy"
name2 = "abc"
registration_name = f"{name}.{type_}"
registration_name2 = f"{name2}.{type_}"
# Start a tasks BEFORE the registration that will keep trying
# and see the registration a bit later
get_service_info_task1 = asyncio.ensure_future(aiozc.async_get_service_info(type_, registration_name))
await asyncio.sleep(_LISTENER_TIME / 1000 / 2)
get_service_info_task2 = asyncio.ensure_future(aiozc.async_get_service_info(type_, registration_name))
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-1.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
info2 = ServiceInfo(
type_,
registration_name2,
80,
0,
0,
desc,
"ash-5.local.",
addresses=[socket.inet_aton("10.0.1.5")],
)
tasks = []
tasks.append(await aiozc.async_register_service(info))
tasks.append(await aiozc.async_register_service(info2))
await asyncio.gather(*tasks)
aiosinfo = await get_service_info_task1
assert aiosinfo is not None
assert aiosinfo.addresses == [socket.inet_aton("10.0.1.2")]
aiosinfo = await get_service_info_task2
assert aiosinfo is not None
assert aiosinfo.addresses == [socket.inet_aton("10.0.1.2")]
aiosinfo = await aiozc.async_get_service_info(type_, registration_name)
assert aiosinfo is not None
assert aiosinfo.addresses == [socket.inet_aton("10.0.1.2")]
new_info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.3"), socket.inet_pton(socket.AF_INET6, "6001:db8::1")],
)
task = await aiozc.async_update_service(new_info)
await task
aiosinfo = await aiozc.async_get_service_info(type_, registration_name)
assert aiosinfo is not None
assert aiosinfo.addresses == [socket.inet_aton("10.0.1.3")]
aiosinfos = await asyncio.gather(
aiozc.async_get_service_info(type_, registration_name),
aiozc.async_get_service_info(type_, registration_name2),
)
assert aiosinfos[0] is not None
assert aiosinfos[0].addresses == [socket.inet_aton("10.0.1.3")]
assert aiosinfos[1] is not None
assert aiosinfos[1].addresses == [socket.inet_aton("10.0.1.5")]
aiosinfo = AsyncServiceInfo(type_, registration_name)
_clear_cache(aiozc.zeroconf)
# Generating the race condition is almost impossible
# without patching since its a TOCTOU race
with patch("zeroconf.asyncio.AsyncServiceInfo._is_complete", False):
await aiosinfo.async_request(aiozc.zeroconf, 3000)
assert aiosinfo is not None
assert aiosinfo.addresses == [socket.inet_aton("10.0.1.3")]
task = await aiozc.async_unregister_service(new_info)
await task
aiosinfo = await aiozc.async_get_service_info(type_, registration_name)
assert aiosinfo is None
await aiozc.async_close()
@pytest.mark.asyncio
async def test_async_service_browser() -> None:
"""Test AsyncServiceBrowser."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
type_ = "_test9-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
calls = []
class MyListener(ServiceListener):
def add_service(self, aiozc: AsyncZeroconf, type: str, name: str) -> None:
calls.append(("add", type, name))
def remove_service(self, aiozc: AsyncZeroconf, type: str, name: str) -> None:
calls.append(("remove", type, name))
def update_service(self, aiozc: AsyncZeroconf, type: str, name: str) -> None:
calls.append(("update", type, name))
listener = MyListener()
await aiozc.async_add_service_listener(type_, listener)
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
task = await aiozc.async_register_service(info)
await task
new_info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.3")],
)
task = await aiozc.async_update_service(new_info)
await task
task = await aiozc.async_unregister_service(new_info)
await task
await aiozc.zeroconf.async_wait(1)
await aiozc.async_close()
assert calls == [
('add', type_, registration_name),
('update', type_, registration_name),
('remove', type_, registration_name),
]
@pytest.mark.asyncio
async def test_async_context_manager() -> None:
"""Test using an async context manager."""
type_ = "_test10-sr-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
async with AsyncZeroconf(interfaces=['127.0.0.1']) as aiozc:
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
{'path': '/~paulsm/'},
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
task = await aiozc.async_register_service(info)
await task
aiosinfo = await aiozc.async_get_service_info(type_, registration_name)
assert aiosinfo is not None
@pytest.mark.asyncio
async def test_async_unregister_all_services() -> None:
"""Test unregistering all services."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
type_ = "_test1-srvc-type._tcp.local."
name = "xxxyyy"
name2 = "abc"
registration_name = f"{name}.{type_}"
registration_name2 = f"{name2}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-1.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
info2 = ServiceInfo(
type_,
registration_name2,
80,
0,
0,
desc,
"ash-5.local.",
addresses=[socket.inet_aton("10.0.1.5")],
)
tasks = []
tasks.append(await aiozc.async_register_service(info))
tasks.append(await aiozc.async_register_service(info2))
await asyncio.gather(*tasks)
tasks = []
tasks.append(aiozc.async_get_service_info(type_, registration_name))
tasks.append(aiozc.async_get_service_info(type_, registration_name2))
results = await asyncio.gather(*tasks)
assert results[0] is not None
assert results[1] is not None
await aiozc.async_unregister_all_services()
_clear_cache(aiozc.zeroconf)
tasks = []
tasks.append(aiozc.async_get_service_info(type_, registration_name))
tasks.append(aiozc.async_get_service_info(type_, registration_name2))
results = await asyncio.gather(*tasks)
assert results[0] is None
assert results[1] is None
# Verify we can call again
await aiozc.async_unregister_all_services()
await aiozc.async_close()
@pytest.mark.asyncio
async def test_async_zeroconf_service_types():
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
zeroconf_registrar = AsyncZeroconf(interfaces=['127.0.0.1'])
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
task = await zeroconf_registrar.async_register_service(info)
await task
# Ensure we do not clear the cache until after the last broadcast is processed
await asyncio.sleep(0.2)
_clear_cache(zeroconf_registrar.zeroconf)
try:
service_types = await AsyncZeroconfServiceTypes.async_find(interfaces=['127.0.0.1'], timeout=2)
assert type_ in service_types
_clear_cache(zeroconf_registrar.zeroconf)
service_types = await AsyncZeroconfServiceTypes.async_find(aiozc=zeroconf_registrar, timeout=2)
assert type_ in service_types
finally:
await zeroconf_registrar.async_close()
@pytest.mark.asyncio
async def test_guard_against_running_serviceinfo_request_event_loop() -> None:
"""Test that running ServiceInfo.request from the event loop throws."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
service_info = AsyncServiceInfo("_hap._tcp.local.", "doesnotmatter._hap._tcp.local.")
with pytest.raises(RuntimeError):
service_info.request(aiozc.zeroconf, 3000)
await aiozc.async_close()
@pytest.mark.asyncio
async def test_service_browser_instantiation_generates_add_events_from_cache():
"""Test that the ServiceBrowser will generate Add events with the existing cache when starting."""
# instantiate a zeroconf instance
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zc = aiozc.zeroconf
type_ = "_hap._tcp.local."
registration_name = "xxxyyy.%s" % type_
callbacks = []
class MyServiceListener(ServiceListener):
def add_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("add", type_, name))
def remove_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("remove", type_, name))
def update_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("update", type_, name))
listener = MyServiceListener()
desc = {'path': '/~paulsm/'}
address_parsed = "10.0.1.2"
address = socket.inet_aton(address_parsed)
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[address])
zc.cache.async_add_records(
[info.dns_pointer(), info.dns_service(), *info.dns_addresses(), info.dns_text()]
)
browser = AsyncServiceBrowser(zc, type_, None, listener)
await asyncio.sleep(0)
assert callbacks == [
('add', type_, registration_name),
]
await browser.async_cancel()
await aiozc.async_close()
@pytest.mark.asyncio
async def test_integration():
service_added = asyncio.Event()
service_removed = asyncio.Event()
unexpected_ttl = asyncio.Event()
got_query = asyncio.Event()
type_ = "_http._tcp.local."
registration_name = "xxxyyy.%s" % type_
def on_service_state_change(zeroconf, service_type, state_change, name):
if name == registration_name:
if state_change is ServiceStateChange.Added:
service_added.set()
elif state_change is ServiceStateChange.Removed:
service_removed.set()
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zeroconf_browser = aiozc.zeroconf
await zeroconf_browser.async_wait_for_start()
# we are going to patch the zeroconf send to check packet sizes
old_send = zeroconf_browser.async_send
time_offset = 0.0
def _new_current_time_millis():
"""Current system time in milliseconds"""
return (time.monotonic() * 1000) + (time_offset * 1000)
expected_ttl = const._DNS_HOST_TTL
nbr_answers = 0
def send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT, v6_flow_scope=()):
"""Sends an outgoing packet."""
pout = DNSIncoming(out.packets()[0])
nonlocal nbr_answers
for answer in pout.answers:
nbr_answers += 1
if not answer.ttl > expected_ttl / 2:
unexpected_ttl.set()
got_query.set()
old_send(out, addr=addr, port=port, v6_flow_scope=v6_flow_scope)
assert len(zeroconf_browser.engine.protocols) == 2
aio_zeroconf_registrar = AsyncZeroconf(interfaces=['127.0.0.1'])
zeroconf_registrar = aio_zeroconf_registrar.zeroconf
await aio_zeroconf_registrar.zeroconf.async_wait_for_start()
assert len(zeroconf_registrar.engine.protocols) == 2
# patch the zeroconf send
# patch the zeroconf current_time_millis
# patch the backoff limit to ensure we always get one query every 1/4 of the DNS TTL
# Disable duplicate question suppression and duplicate packet suppression for this test as it works
# by asking the same question over and over
with patch.object(
zeroconf_registrar.engine.protocols[0], "suppress_duplicate_packet", return_value=False
), patch.object(
zeroconf_registrar.engine.protocols[1], "suppress_duplicate_packet", return_value=False
), patch.object(
zeroconf_browser.engine.protocols[0], "suppress_duplicate_packet", return_value=False
), patch.object(
zeroconf_browser.engine.protocols[1], "suppress_duplicate_packet", return_value=False
), patch.object(
zeroconf_browser.question_history, "suppresses", return_value=False
), patch.object(
zeroconf_browser, "async_send", send
), patch(
"zeroconf._services.browser.current_time_millis", _new_current_time_millis
), patch.object(
_services_browser, "_BROWSER_BACKOFF_LIMIT", int(expected_ttl / 4)
):
service_added = asyncio.Event()
service_removed = asyncio.Event()
browser = AsyncServiceBrowser(zeroconf_browser, type_, [on_service_state_change])
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
task = await aio_zeroconf_registrar.async_register_service(info)
await task
try:
await asyncio.wait_for(service_added.wait(), 1)
assert service_added.is_set()
# Test that we receive queries containing answers only if the remaining TTL
# is greater than half the original TTL
sleep_count = 0
test_iterations = 50
while nbr_answers < test_iterations:
# Increase simulated time shift by 1/4 of the TTL in seconds
time_offset += expected_ttl / 4
now = _new_current_time_millis()
browser.reschedule_type(type_, now, now)
sleep_count += 1
await asyncio.wait_for(got_query.wait(), 1)
got_query.clear()
# Prevent the test running indefinitely in an error condition
assert sleep_count < test_iterations * 4
assert not unexpected_ttl.is_set()
# Don't remove service, allow close() to cleanup
finally:
await aio_zeroconf_registrar.async_close()
await asyncio.wait_for(service_removed.wait(), 1)
assert service_removed.is_set()
await browser.async_cancel()
await aiozc.async_close()
@pytest.mark.asyncio
async def test_info_asking_default_is_asking_qm_questions_after_the_first_qu():
"""Verify the service info first question is QU and subsequent ones are QM questions."""
type_ = "_quservice._tcp.local."
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zeroconf_info = aiozc.zeroconf
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
zeroconf_info.registry.async_add(info)
# we are going to patch the zeroconf send to check query transmission
old_send = zeroconf_info.async_send
first_outgoing = None
second_outgoing = None
def send(out, addr=const._MDNS_ADDR, port=const._MDNS_PORT):
"""Sends an outgoing packet."""
nonlocal first_outgoing
nonlocal second_outgoing
if out.questions:
if first_outgoing is not None and second_outgoing is None:
second_outgoing = out
if first_outgoing is None:
first_outgoing = out
old_send(out, addr=addr, port=port)
# patch the zeroconf send
with patch.object(zeroconf_info, "async_send", send):
aiosinfo = AsyncServiceInfo(type_, registration_name)
# Patch _is_complete so we send multiple times
with patch("zeroconf.asyncio.AsyncServiceInfo._is_complete", False):
await aiosinfo.async_request(aiozc.zeroconf, 1200)
try:
assert first_outgoing.questions[0].unicast == True
assert second_outgoing.questions[0].unicast == False
finally:
await aiozc.async_close()
@pytest.mark.asyncio
async def test_service_browser_ignores_unrelated_updates():
"""Test that the ServiceBrowser ignores unrelated updates."""
# instantiate a zeroconf instance
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zc = aiozc.zeroconf
type_ = "_veryuniqueone._tcp.local."
registration_name = "xxxyyy.%s" % type_
callbacks = []
class MyServiceListener(ServiceListener):
def add_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("add", type_, name))
def remove_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("remove", type_, name))
def update_service(self, zc, type_, name) -> None:
nonlocal callbacks
if name == registration_name:
callbacks.append(("update", type_, name))
listener = MyServiceListener()
desc = {'path': '/~paulsm/'}
address_parsed = "10.0.1.2"
address = socket.inet_aton(address_parsed)
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[address])
zc.cache.async_add_records(
[
info.dns_pointer(),
info.dns_service(),
*info.dns_addresses(),
info.dns_text(),
DNSService(
"zoom._unrelated._tcp.local.",
const._TYPE_SRV,
const._CLASS_IN,
const._DNS_HOST_TTL,
0,
0,
81,
'unrelated.local.',
),
]
)
browser = AsyncServiceBrowser(zc, type_, None, listener)
generated = DNSOutgoing(const._FLAGS_QR_RESPONSE)
generated.add_answer_at_time(
DNSPointer(
"_unrelated._tcp.local.",
const._TYPE_PTR,
const._CLASS_IN,
const._DNS_OTHER_TTL,
"zoom._unrelated._tcp.local.",
),
0,
)
generated.add_answer_at_time(
DNSAddress("unrelated.local.", const._TYPE_A, const._CLASS_IN, const._DNS_HOST_TTL, b"1234"),
0,
)
generated.add_answer_at_time(
DNSText(
"zoom._unrelated._tcp.local.",
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
b"zoom",
),
0,
)
zc.handle_response(DNSIncoming(generated.packets()[0]))
await browser.async_cancel()
await asyncio.sleep(0)
assert callbacks == [
('add', type_, registration_name),
]
await aiozc.async_close()
@pytest.mark.asyncio
async def test_async_request_timeout():
"""Test that the timeout does not throw an exception and finishes close to the actual timeout."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
await aiozc.zeroconf.async_wait_for_start()
start_time = current_time_millis()
assert await aiozc.async_get_service_info("_notfound.local.", "notthere._notfound.local.") is None
end_time = current_time_millis()
await aiozc.async_close()
# 3000ms for the default timeout
# 1000ms for loaded systems + schedule overhead
assert (end_time - start_time) < 3000 + 1000
@pytest.mark.asyncio
async def test_async_request_non_running_instance():
"""Test that the async_request throws when zeroconf is not running."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
await aiozc.async_close()
with pytest.raises(NotRunningException):
await aiozc.async_get_service_info("_notfound.local.", "notthere._notfound.local.")
@pytest.mark.asyncio
async def test_legacy_unicast_response(run_isolated):
"""Verify legacy unicast responses include questions and correct id."""
type_ = "_mservice._tcp.local."
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
await aiozc.zeroconf.async_wait_for_start()
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
aiozc.zeroconf.registry.async_add(info)
query = DNSOutgoing(const._FLAGS_QR_QUERY, multicast=False, id_=888)
question = DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
query.add_question(question)
protocol = aiozc.zeroconf.engine.protocols[0]
with patch.object(aiozc.zeroconf, "async_send") as send_mock:
protocol.datagram_received(query.packets()[0], ('127.0.0.1', 6503))
calls = send_mock.mock_calls
# Verify the response is sent back on the socket it was recieved from
assert calls == [call(ANY, '127.0.0.1', 6503, (), protocol.transport)]
outgoing = send_mock.call_args[0][0]
assert isinstance(outgoing, DNSOutgoing)
assert outgoing.questions == [question]
assert outgoing.id == query.id
await aiozc.async_close()
@pytest.mark.asyncio
async def test_update_with_uppercase_names(run_isolated):
"""Test an ip update from a shelly which uses uppercase names."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
await aiozc.zeroconf.async_wait_for_start()
callbacks = []
class MyServiceListener(ServiceListener):
def add_service(self, zc, type_, name) -> None:
nonlocal callbacks
callbacks.append(("add", type_, name))
def remove_service(self, zc, type_, name) -> None:
nonlocal callbacks
callbacks.append(("remove", type_, name))
def update_service(self, zc, type_, name) -> None:
nonlocal callbacks
callbacks.append(("update", type_, name))
listener = MyServiceListener()
browser = AsyncServiceBrowser(aiozc.zeroconf, "_http._tcp.local.", None, listener)
protocol = aiozc.zeroconf.engine.protocols[0]
packet = b'\x00\x00\x84\x80\x00\x00\x00\n\x00\x00\x00\x00\t_services\x07_dns-sd\x04_udp\x05local\x00\x00\x0c\x00\x01\x00\x00\x11\x94\x00\x14\x07_shelly\x04_tcp\x05local\x00\t_services\x07_dns-sd\x04_udp\x05local\x00\x00\x0c\x00\x01\x00\x00\x11\x94\x00\x12\x05_http\x04_tcp\x05local\x00\x07_shelly\x04_tcp\x05local\x00\x00\x0c\x00\x01\x00\x00\x11\x94\x00.\x19shellypro4pm-94b97ec07650\x07_shelly\x04_tcp\x05local\x00\x19shellypro4pm-94b97ec07650\x07_shelly\x04_tcp\x05local\x00\x00!\x80\x01\x00\x00\x00x\x00\'\x00\x00\x00\x00\x00P\x19ShellyPro4PM-94B97EC07650\x05local\x00\x19shellypro4pm-94b97ec07650\x07_shelly\x04_tcp\x05local\x00\x00\x10\x80\x01\x00\x00\x00x\x00"\napp=Pro4PM\x10ver=0.10.0-beta5\x05gen=2\x05_http\x04_tcp\x05local\x00\x00\x0c\x00\x01\x00\x00\x11\x94\x00,\x19ShellyPro4PM-94B97EC07650\x05_http\x04_tcp\x05local\x00\x19ShellyPro4PM-94B97EC07650\x05_http\x04_tcp\x05local\x00\x00!\x80\x01\x00\x00\x00x\x00\'\x00\x00\x00\x00\x00P\x19ShellyPro4PM-94B97EC07650\x05local\x00\x19ShellyPro4PM-94B97EC07650\x05_http\x04_tcp\x05local\x00\x00\x10\x80\x01\x00\x00\x00x\x00\x06\x05gen=2\x19ShellyPro4PM-94B97EC07650\x05local\x00\x00\x01\x80\x01\x00\x00\x00x\x00\x04\xc0\xa8\xbc=\x19ShellyPro4PM-94B97EC07650\x05local\x00\x00/\x80\x01\x00\x00\x00x\x00$\x19ShellyPro4PM-94B97EC07650\x05local\x00\x00\x01@'
protocol.datagram_received(packet, ('127.0.0.1', 6503))
await asyncio.sleep(0)
packet = b'\x00\x00\x84\x80\x00\x00\x00\n\x00\x00\x00\x00\t_services\x07_dns-sd\x04_udp\x05local\x00\x00\x0c\x00\x01\x00\x00\x11\x94\x00\x14\x07_shelly\x04_tcp\x05local\x00\t_services\x07_dns-sd\x04_udp\x05local\x00\x00\x0c\x00\x01\x00\x00\x11\x94\x00\x12\x05_http\x04_tcp\x05local\x00\x07_shelly\x04_tcp\x05local\x00\x00\x0c\x00\x01\x00\x00\x11\x94\x00.\x19shellypro4pm-94b97ec07650\x07_shelly\x04_tcp\x05local\x00\x19shellypro4pm-94b97ec07650\x07_shelly\x04_tcp\x05local\x00\x00!\x80\x01\x00\x00\x00x\x00\'\x00\x00\x00\x00\x00P\x19ShellyPro4PM-94B97EC07650\x05local\x00\x19shellypro4pm-94b97ec07650\x07_shelly\x04_tcp\x05local\x00\x00\x10\x80\x01\x00\x00\x00x\x00"\napp=Pro4PM\x10ver=0.10.0-beta5\x05gen=2\x05_http\x04_tcp\x05local\x00\x00\x0c\x00\x01\x00\x00\x11\x94\x00,\x19ShellyPro4PM-94B97EC07650\x05_http\x04_tcp\x05local\x00\x19ShellyPro4PM-94B97EC07650\x05_http\x04_tcp\x05local\x00\x00!\x80\x01\x00\x00\x00x\x00\'\x00\x00\x00\x00\x00P\x19ShellyPro4PM-94B97EC07650\x05local\x00\x19ShellyPro4PM-94B97EC07650\x05_http\x04_tcp\x05local\x00\x00\x10\x80\x01\x00\x00\x00x\x00\x06\x05gen=2\x19ShellyPro4PM-94B97EC07650\x05local\x00\x00\x01\x80\x01\x00\x00\x00x\x00\x04\xc0\xa8\xbcA\x19ShellyPro4PM-94B97EC07650\x05local\x00\x00/\x80\x01\x00\x00\x00x\x00$\x19ShellyPro4PM-94B97EC07650\x05local\x00\x00\x01@'
protocol.datagram_received(packet, ('127.0.0.1', 6503))
await aiozc.async_close()
assert callbacks == [
('add', '_http._tcp.local.', 'ShellyPro4PM-94B97EC07650._http._tcp.local.'),
('update', '_http._tcp.local.', 'ShellyPro4PM-94B97EC07650._http._tcp.local.'),
]
07070100000025000081A4000000000000000000000001631651AD00002242000000000000000000000000000000000000002B00000000python-zeroconf-0.39.1/tests/test_cache.py#!/usr/bin/env python
""" Unit tests for zeroconf._cache. """
import logging
import unittest
import unittest.mock
import zeroconf as r
from zeroconf import const
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
class TestDNSCache(unittest.TestCase):
def test_order(self):
record1 = r.DNSAddress('a', const._TYPE_SOA, const._CLASS_IN, 1, b'a')
record2 = r.DNSAddress('a', const._TYPE_SOA, const._CLASS_IN, 1, b'b')
cache = r.DNSCache()
cache.async_add_records([record1, record2])
entry = r.DNSEntry('a', const._TYPE_SOA, const._CLASS_IN)
cached_record = cache.get(entry)
assert cached_record == record2
def test_adding_same_record_to_cache_different_ttls(self):
"""We should always get back the last entry we added if there are different TTLs.
This ensures we only have one source of truth for TTLs as a record cannot
be both expired and not expired.
"""
record1 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'a')
record2 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 10, b'a')
cache = r.DNSCache()
cache.async_add_records([record1, record2])
entry = r.DNSEntry(record2)
cached_record = cache.get(entry)
assert cached_record == record2
def test_adding_same_record_to_cache_different_ttls(self):
"""Verify we only get one record back.
The last record added should replace the previous since two
records with different ttls are __eq__. This ensures we
only have one source of truth for TTLs as a record cannot
be both expired and not expired.
"""
record1 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'a')
record2 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 10, b'a')
cache = r.DNSCache()
cache.async_add_records([record1, record2])
cached_records = cache.get_all_by_details('a', const._TYPE_A, const._CLASS_IN)
assert cached_records == [record2]
def test_cache_empty_does_not_leak_memory_by_leaving_empty_list(self):
record1 = r.DNSAddress('a', const._TYPE_SOA, const._CLASS_IN, 1, b'a')
record2 = r.DNSAddress('a', const._TYPE_SOA, const._CLASS_IN, 1, b'b')
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert 'a' in cache.cache
cache.async_remove_records([record1, record2])
assert 'a' not in cache.cache
def test_cache_empty_multiple_calls(self):
record1 = r.DNSAddress('a', const._TYPE_SOA, const._CLASS_IN, 1, b'a')
record2 = r.DNSAddress('a', const._TYPE_SOA, const._CLASS_IN, 1, b'b')
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert 'a' in cache.cache
cache.async_remove_records([record1, record2])
assert 'a' not in cache.cache
class TestDNSAsyncCacheAPI(unittest.TestCase):
def test_async_get_unique(self):
record1 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'a')
record2 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'b')
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert cache.async_get_unique(record1) == record1
assert cache.async_get_unique(record2) == record2
def test_async_all_by_details(self):
record1 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'a')
record2 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'b')
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert set(cache.async_all_by_details('a', const._TYPE_A, const._CLASS_IN)) == {record1, record2}
def test_async_entries_with_server(self):
record1 = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 85, 'ab'
)
record2 = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'ab'
)
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert set(cache.async_entries_with_server('ab')) == {record1, record2}
assert set(cache.async_entries_with_server('AB')) == {record1, record2}
def test_async_entries_with_name(self):
record1 = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 85, 'ab'
)
record2 = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'ab'
)
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert set(cache.async_entries_with_name('irrelevant')) == {record1, record2}
assert set(cache.async_entries_with_name('Irrelevant')) == {record1, record2}
# These functions have been seen in other projects so
# we try to maintain a stable API for all the threadsafe getters
class TestDNSCacheAPI(unittest.TestCase):
def test_get(self):
record1 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'a')
record2 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'b')
record3 = r.DNSAddress('a', const._TYPE_AAAA, const._CLASS_IN, 1, b'ipv6')
cache = r.DNSCache()
cache.async_add_records([record1, record2, record3])
assert cache.get(record1) == record1
assert cache.get(record2) == record2
assert cache.get(r.DNSEntry('a', const._TYPE_A, const._CLASS_IN)) == record2
assert cache.get(r.DNSEntry('a', const._TYPE_AAAA, const._CLASS_IN)) == record3
assert cache.get(r.DNSEntry('notthere', const._TYPE_A, const._CLASS_IN)) is None
def test_get_by_details(self):
record1 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'a')
record2 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'b')
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert cache.get_by_details('a', const._TYPE_A, const._CLASS_IN) == record2
def test_get_all_by_details(self):
record1 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'a')
record2 = r.DNSAddress('a', const._TYPE_A, const._CLASS_IN, 1, b'b')
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert set(cache.get_all_by_details('a', const._TYPE_A, const._CLASS_IN)) == {record1, record2}
def test_entries_with_server(self):
record1 = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 85, 'ab'
)
record2 = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'ab'
)
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert set(cache.entries_with_server('ab')) == {record1, record2}
assert set(cache.entries_with_server('AB')) == {record1, record2}
def test_entries_with_name(self):
record1 = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 85, 'ab'
)
record2 = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'ab'
)
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert set(cache.entries_with_name('irrelevant')) == {record1, record2}
assert set(cache.entries_with_name('Irrelevant')) == {record1, record2}
def test_current_entry_with_name_and_alias(self):
record1 = r.DNSPointer(
'irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, 'x.irrelevant'
)
record2 = r.DNSPointer(
'irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, 'y.irrelevant'
)
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert cache.current_entry_with_name_and_alias('irrelevant', 'x.irrelevant') == record1
def test_name(self):
record1 = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 85, 'ab'
)
record2 = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'ab'
)
cache = r.DNSCache()
cache.async_add_records([record1, record2])
assert cache.names() == ['irrelevant']
07070100000026000081A4000000000000000000000001631651AD00007273000000000000000000000000000000000000002A00000000python-zeroconf-0.39.1/tests/test_core.py#!/usr/bin/env python
""" Unit tests for zeroconf._core """
import asyncio
import itertools
import logging
import os
import pytest
import socket
import sys
import time
import threading
import unittest
import unittest.mock
from typing import cast
from unittest.mock import patch
import zeroconf as r
from zeroconf import _core, const, Zeroconf, current_time_millis, NotRunningException
from zeroconf.asyncio import AsyncZeroconf
from zeroconf._protocol import outgoing
from . import has_working_ipv6, _clear_cache, _inject_response, _wait_for_start
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
def threadsafe_query(zc, protocol, *args):
async def make_query():
protocol.handle_query_or_defer(*args)
asyncio.run_coroutine_threadsafe(make_query(), zc.loop).result()
# This test uses asyncio because it needs to access the cache directly
# which is not threadsafe
@pytest.mark.asyncio
async def test_reaper():
with patch.object(_core, "_CACHE_CLEANUP_INTERVAL", 10):
assert _core._CACHE_CLEANUP_INTERVAL == 10
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zeroconf = aiozc.zeroconf
cache = zeroconf.cache
original_entries = list(itertools.chain(*(cache.entries_with_name(name) for name in cache.names())))
record_with_10s_ttl = r.DNSAddress('a', const._TYPE_SOA, const._CLASS_IN, 10, b'a')
record_with_1s_ttl = r.DNSAddress('a', const._TYPE_SOA, const._CLASS_IN, 1, b'b')
zeroconf.cache.async_add_records([record_with_10s_ttl, record_with_1s_ttl])
question = r.DNSQuestion("_hap._tcp._local.", const._TYPE_PTR, const._CLASS_IN)
now = r.current_time_millis()
other_known_answers = {
r.DNSPointer(
"_hap._tcp.local.",
const._TYPE_PTR,
const._CLASS_IN,
10000,
'known-to-other._hap._tcp.local.',
)
}
zeroconf.question_history.add_question_at_time(question, now, other_known_answers)
assert zeroconf.question_history.suppresses(question, now, other_known_answers)
entries_with_cache = list(itertools.chain(*(cache.entries_with_name(name) for name in cache.names())))
await asyncio.sleep(1.2)
entries = list(itertools.chain(*(cache.entries_with_name(name) for name in cache.names())))
assert zeroconf.cache.get(record_with_1s_ttl) is None
await aiozc.async_close()
assert not zeroconf.question_history.suppresses(question, now, other_known_answers)
assert entries != original_entries
assert entries_with_cache != original_entries
assert record_with_10s_ttl in entries
assert record_with_1s_ttl not in entries
@pytest.mark.asyncio
async def test_reaper_aborts_when_done():
"""Ensure cache cleanup stops when zeroconf is done."""
with patch.object(_core, "_CACHE_CLEANUP_INTERVAL", 10):
assert _core._CACHE_CLEANUP_INTERVAL == 10
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zeroconf = aiozc.zeroconf
record_with_10s_ttl = r.DNSAddress('a', const._TYPE_SOA, const._CLASS_IN, 10, b'a')
record_with_1s_ttl = r.DNSAddress('a', const._TYPE_SOA, const._CLASS_IN, 1, b'b')
zeroconf.cache.async_add_records([record_with_10s_ttl, record_with_1s_ttl])
assert zeroconf.cache.get(record_with_10s_ttl) is not None
assert zeroconf.cache.get(record_with_1s_ttl) is not None
await aiozc.async_close()
await asyncio.sleep(1.2)
assert zeroconf.cache.get(record_with_10s_ttl) is not None
assert zeroconf.cache.get(record_with_1s_ttl) is not None
class Framework(unittest.TestCase):
def test_launch_and_close(self):
rv = r.Zeroconf(interfaces=r.InterfaceChoice.All)
rv.close()
rv = r.Zeroconf(interfaces=r.InterfaceChoice.Default)
rv.close()
def test_launch_and_close_context_manager(self):
with r.Zeroconf(interfaces=r.InterfaceChoice.All) as rv:
assert rv.done is False
assert rv.done is True
with r.Zeroconf(interfaces=r.InterfaceChoice.Default) as rv:
assert rv.done is False
assert rv.done is True
def test_launch_and_close_unicast(self):
rv = r.Zeroconf(interfaces=r.InterfaceChoice.All, unicast=True)
rv.close()
rv = r.Zeroconf(interfaces=r.InterfaceChoice.Default, unicast=True)
rv.close()
def test_close_multiple_times(self):
rv = r.Zeroconf(interfaces=r.InterfaceChoice.Default)
rv.close()
rv.close()
@unittest.skipIf(not has_working_ipv6(), 'Requires IPv6')
@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')
def test_launch_and_close_v4_v6(self):
rv = r.Zeroconf(interfaces=r.InterfaceChoice.All, ip_version=r.IPVersion.All)
rv.close()
rv = r.Zeroconf(interfaces=r.InterfaceChoice.Default, ip_version=r.IPVersion.All)
rv.close()
@unittest.skipIf(not has_working_ipv6(), 'Requires IPv6')
@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')
def test_launch_and_close_v6_only(self):
rv = r.Zeroconf(interfaces=r.InterfaceChoice.All, ip_version=r.IPVersion.V6Only)
rv.close()
rv = r.Zeroconf(interfaces=r.InterfaceChoice.Default, ip_version=r.IPVersion.V6Only)
rv.close()
@unittest.skipIf(sys.platform == 'darwin', reason="apple_p2p failure path not testable on mac")
def test_launch_and_close_apple_p2p_not_mac(self):
with pytest.raises(RuntimeError):
r.Zeroconf(apple_p2p=True)
@unittest.skipIf(sys.platform != 'darwin', reason="apple_p2p happy path only testable on mac")
def test_launch_and_close_apple_p2p_on_mac(self):
rv = r.Zeroconf(apple_p2p=True)
rv.close()
def test_handle_response(self):
def mock_incoming_msg(service_state_change: r.ServiceStateChange) -> r.DNSIncoming:
ttl = 120
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
if service_state_change == r.ServiceStateChange.Updated:
generated.add_answer_at_time(
r.DNSText(
service_name,
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
service_text,
),
0,
)
return r.DNSIncoming(generated.packets()[0])
if service_state_change == r.ServiceStateChange.Removed:
ttl = 0
generated.add_answer_at_time(
r.DNSPointer(service_type, const._TYPE_PTR, const._CLASS_IN, ttl, service_name), 0
)
generated.add_answer_at_time(
r.DNSService(
service_name,
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
0,
0,
80,
service_server,
),
0,
)
generated.add_answer_at_time(
r.DNSText(
service_name, const._TYPE_TXT, const._CLASS_IN | const._CLASS_UNIQUE, ttl, service_text
),
0,
)
generated.add_answer_at_time(
r.DNSAddress(
service_server,
const._TYPE_A,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
socket.inet_aton(service_address),
),
0,
)
return r.DNSIncoming(generated.packets()[0])
def mock_split_incoming_msg(service_state_change: r.ServiceStateChange) -> r.DNSIncoming:
"""Mock an incoming message for the case where the packet is split."""
ttl = 120
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
generated.add_answer_at_time(
r.DNSAddress(
service_server,
const._TYPE_A,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
socket.inet_aton(service_address),
),
0,
)
generated.add_answer_at_time(
r.DNSService(
service_name,
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
ttl,
0,
0,
80,
service_server,
),
0,
)
return r.DNSIncoming(generated.packets()[0])
service_name = 'name._type._tcp.local.'
service_type = '_type._tcp.local.'
service_server = 'ash-2.local.'
service_text = b'path=/~paulsm/'
service_address = '10.0.1.2'
zeroconf = r.Zeroconf(interfaces=['127.0.0.1'])
try:
# service added
_inject_response(zeroconf, mock_incoming_msg(r.ServiceStateChange.Added))
dns_text = zeroconf.cache.get_by_details(service_name, const._TYPE_TXT, const._CLASS_IN)
assert dns_text is not None
assert cast(r.DNSText, dns_text).text == service_text # service_text is b'path=/~paulsm/'
all_dns_text = zeroconf.cache.get_all_by_details(service_name, const._TYPE_TXT, const._CLASS_IN)
assert [dns_text] == all_dns_text
# https://tools.ietf.org/html/rfc6762#section-10.2
# Instead of merging this new record additively into the cache in addition
# to any previous records with the same name, rrtype, and rrclass,
# all old records with that name, rrtype, and rrclass that were received
# more than one second ago are declared invalid,
# and marked to expire from the cache in one second.
time.sleep(1.1)
# service updated. currently only text record can be updated
service_text = b'path=/~humingchun/'
_inject_response(zeroconf, mock_incoming_msg(r.ServiceStateChange.Updated))
dns_text = zeroconf.cache.get_by_details(service_name, const._TYPE_TXT, const._CLASS_IN)
assert dns_text is not None
assert cast(r.DNSText, dns_text).text == service_text # service_text is b'path=/~humingchun/'
time.sleep(1.1)
# The split message only has a SRV and A record.
# This should not evict TXT records from the cache
_inject_response(zeroconf, mock_split_incoming_msg(r.ServiceStateChange.Updated))
time.sleep(1.1)
dns_text = zeroconf.cache.get_by_details(service_name, const._TYPE_TXT, const._CLASS_IN)
assert dns_text is not None
assert cast(r.DNSText, dns_text).text == service_text # service_text is b'path=/~humingchun/'
# service removed
_inject_response(zeroconf, mock_incoming_msg(r.ServiceStateChange.Removed))
dns_text = zeroconf.cache.get_by_details(service_name, const._TYPE_TXT, const._CLASS_IN)
assert dns_text.is_expired(current_time_millis() + 1000)
finally:
zeroconf.close()
def test_generate_service_query_set_qu_bit():
"""Test generate_service_query sets the QU bit."""
zeroconf_registrar = Zeroconf(interfaces=['127.0.0.1'])
desc = {'path': '/~paulsm/'}
type_ = "._hap._tcp.local."
registration_name = "this-host-is-not-used._hap._tcp.local."
info = r.ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
out = zeroconf_registrar.generate_service_query(info)
assert out.questions[0].unicast is True
zeroconf_registrar.close()
def test_invalid_packets_ignored_and_does_not_cause_loop_exception():
"""Ensure an invalid packet cannot cause the loop to collapse."""
zc = Zeroconf(interfaces=['127.0.0.1'])
generated = r.DNSOutgoing(0)
packet = generated.packets()[0]
packet = packet[:8] + b'deadbeef' + packet[8:]
parsed = r.DNSIncoming(packet)
assert parsed.valid is False
# Invalid Packet
mock_out = unittest.mock.Mock()
mock_out.packets = lambda: [packet]
zc.send(mock_out)
# Invalid oversized packet
mock_out = unittest.mock.Mock()
mock_out.packets = lambda: [packet * 1000]
zc.send(mock_out)
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
entry = r.DNSText(
"didnotcrashincoming._crash._tcp.local.",
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
500,
b'path=/~paulsm/',
)
assert isinstance(entry, r.DNSText)
assert isinstance(entry, r.DNSRecord)
assert isinstance(entry, r.DNSEntry)
generated.add_answer_at_time(entry, 0)
zc.send(generated)
time.sleep(0.2)
zc.close()
assert zc.cache.get(entry) is not None
def test_goodbye_all_services():
"""Verify generating the goodbye query does not change with time."""
zc = Zeroconf(interfaces=['127.0.0.1'])
out = zc.generate_unregister_all_services()
assert out is None
type_ = "_http._tcp.local."
registration_name = "xxxyyy.%s" % type_
desc = {'path': '/~paulsm/'}
info = r.ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
zc.registry.async_add(info)
out = zc.generate_unregister_all_services()
assert out is not None
first_packet = out.packets()
zc.registry.async_add(info)
out2 = zc.generate_unregister_all_services()
assert out2 is not None
second_packet = out.packets()
assert second_packet == first_packet
# Verify the registery is empty
out3 = zc.generate_unregister_all_services()
assert out3 is None
assert zc.registry.async_get_service_infos() == []
zc.close()
def test_register_service_with_custom_ttl():
"""Test a registering a service with a custom ttl."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# start a browser
type_ = "_homeassistant._tcp.local."
name = "MyTestHome"
info_service = r.ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
{'path': '/~paulsm/'},
"ash-90.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
zc.register_service(info_service, ttl=3000)
assert zc.cache.get(info_service.dns_pointer()).ttl == 3000
zc.close()
def test_logging_packets(caplog):
"""Test packets are only logged with debug logging."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# start a browser
type_ = "_logging._tcp.local."
name = "TLD"
info_service = r.ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
{'path': '/~paulsm/'},
"ash-90.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
logging.getLogger('zeroconf').setLevel(logging.DEBUG)
caplog.clear()
zc.register_service(info_service, ttl=3000)
assert "Sending to" in caplog.text
assert zc.cache.get(info_service.dns_pointer()).ttl == 3000
logging.getLogger('zeroconf').setLevel(logging.INFO)
caplog.clear()
zc.unregister_service(info_service)
assert "Sending to" not in caplog.text
logging.getLogger('zeroconf').setLevel(logging.DEBUG)
zc.close()
def test_get_service_info_failure_path():
"""Verify get_service_info return None when the underlying call returns False."""
zc = Zeroconf(interfaces=['127.0.0.1'])
assert zc.get_service_info("_neverused._tcp.local.", "xneverused._neverused._tcp.local.", 10) is None
zc.close()
def test_sending_unicast():
"""Test sending unicast response."""
zc = Zeroconf(interfaces=['127.0.0.1'])
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
entry = r.DNSText(
"didnotcrashincoming._crash._tcp.local.",
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
500,
b'path=/~paulsm/',
)
generated.add_answer_at_time(entry, 0)
zc.send(generated, "2001:db8::1", const._MDNS_PORT) # https://www.iana.org/go/rfc3849
time.sleep(0.2)
assert zc.cache.get(entry) is None
zc.send(generated, "198.51.100.0", const._MDNS_PORT) # Documentation (TEST-NET-2)
time.sleep(0.2)
assert zc.cache.get(entry) is None
zc.send(generated)
# Handle slow github CI runners on windows
for _ in range(10):
time.sleep(0.05)
if zc.cache.get(entry) is not None:
break
assert zc.cache.get(entry) is not None
zc.close()
def test_tc_bit_defers():
zc = Zeroconf(interfaces=['127.0.0.1'])
_wait_for_start(zc)
type_ = "_tcbitdefer._tcp.local."
name = "knownname"
name2 = "knownname2"
name3 = "knownname3"
registration_name = f"{name}.{type_}"
registration2_name = f"{name2}.{type_}"
registration3_name = f"{name3}.{type_}"
desc = {'path': '/~paulsm/'}
server_name = "ash-2.local."
server_name2 = "ash-3.local."
server_name3 = "ash-4.local."
info = r.ServiceInfo(
type_, registration_name, 80, 0, 0, desc, server_name, addresses=[socket.inet_aton("10.0.1.2")]
)
info2 = r.ServiceInfo(
type_, registration2_name, 80, 0, 0, desc, server_name2, addresses=[socket.inet_aton("10.0.1.2")]
)
info3 = r.ServiceInfo(
type_, registration3_name, 80, 0, 0, desc, server_name3, addresses=[socket.inet_aton("10.0.1.2")]
)
zc.registry.async_add(info)
zc.registry.async_add(info2)
zc.registry.async_add(info3)
protocol = zc.engine.protocols[0]
now = r.current_time_millis()
_clear_cache(zc)
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(type_, const._TYPE_PTR, const._CLASS_IN)
generated.add_question(question)
for _ in range(300):
# Add so many answers we end up with another packet
generated.add_answer_at_time(info.dns_pointer(), now)
generated.add_answer_at_time(info2.dns_pointer(), now)
generated.add_answer_at_time(info3.dns_pointer(), now)
packets = generated.packets()
assert len(packets) == 4
expected_deferred = []
source_ip = '203.0.113.13'
next_packet = r.DNSIncoming(packets.pop(0))
expected_deferred.append(next_packet)
threadsafe_query(zc, protocol, next_packet, source_ip, const._MDNS_PORT, None)
assert protocol._deferred[source_ip] == expected_deferred
assert source_ip in protocol._timers
next_packet = r.DNSIncoming(packets.pop(0))
expected_deferred.append(next_packet)
threadsafe_query(zc, protocol, next_packet, source_ip, const._MDNS_PORT, None)
assert protocol._deferred[source_ip] == expected_deferred
assert source_ip in protocol._timers
threadsafe_query(zc, protocol, next_packet, source_ip, const._MDNS_PORT, None)
assert protocol._deferred[source_ip] == expected_deferred
assert source_ip in protocol._timers
next_packet = r.DNSIncoming(packets.pop(0))
expected_deferred.append(next_packet)
threadsafe_query(zc, protocol, next_packet, source_ip, const._MDNS_PORT, None)
assert protocol._deferred[source_ip] == expected_deferred
assert source_ip in protocol._timers
next_packet = r.DNSIncoming(packets.pop(0))
expected_deferred.append(next_packet)
threadsafe_query(zc, protocol, next_packet, source_ip, const._MDNS_PORT, None)
assert source_ip not in protocol._deferred
assert source_ip not in protocol._timers
# unregister
zc.unregister_service(info)
zc.close()
def test_tc_bit_defers_last_response_missing():
zc = Zeroconf(interfaces=['127.0.0.1'])
_wait_for_start(zc)
type_ = "_knowndefer._tcp.local."
name = "knownname"
name2 = "knownname2"
name3 = "knownname3"
registration_name = f"{name}.{type_}"
registration2_name = f"{name2}.{type_}"
registration3_name = f"{name3}.{type_}"
desc = {'path': '/~paulsm/'}
server_name = "ash-2.local."
server_name2 = "ash-3.local."
server_name3 = "ash-4.local."
info = r.ServiceInfo(
type_, registration_name, 80, 0, 0, desc, server_name, addresses=[socket.inet_aton("10.0.1.2")]
)
info2 = r.ServiceInfo(
type_, registration2_name, 80, 0, 0, desc, server_name2, addresses=[socket.inet_aton("10.0.1.2")]
)
info3 = r.ServiceInfo(
type_, registration3_name, 80, 0, 0, desc, server_name3, addresses=[socket.inet_aton("10.0.1.2")]
)
zc.registry.async_add(info)
zc.registry.async_add(info2)
zc.registry.async_add(info3)
protocol = zc.engine.protocols[0]
now = r.current_time_millis()
_clear_cache(zc)
source_ip = '203.0.113.12'
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(type_, const._TYPE_PTR, const._CLASS_IN)
generated.add_question(question)
for _ in range(300):
# Add so many answers we end up with another packet
generated.add_answer_at_time(info.dns_pointer(), now)
generated.add_answer_at_time(info2.dns_pointer(), now)
generated.add_answer_at_time(info3.dns_pointer(), now)
packets = generated.packets()
assert len(packets) == 4
expected_deferred = []
next_packet = r.DNSIncoming(packets.pop(0))
expected_deferred.append(next_packet)
threadsafe_query(zc, protocol, next_packet, source_ip, const._MDNS_PORT, None)
assert protocol._deferred[source_ip] == expected_deferred
timer1 = protocol._timers[source_ip]
next_packet = r.DNSIncoming(packets.pop(0))
expected_deferred.append(next_packet)
threadsafe_query(zc, protocol, next_packet, source_ip, const._MDNS_PORT, None)
assert protocol._deferred[source_ip] == expected_deferred
timer2 = protocol._timers[source_ip]
if sys.version_info >= (3, 7):
assert timer1.cancelled()
assert timer2 != timer1
# Send the same packet again to similar multi interfaces
threadsafe_query(zc, protocol, next_packet, source_ip, const._MDNS_PORT, None)
assert protocol._deferred[source_ip] == expected_deferred
assert source_ip in protocol._timers
timer3 = protocol._timers[source_ip]
if sys.version_info >= (3, 7):
assert not timer3.cancelled()
assert timer3 == timer2
next_packet = r.DNSIncoming(packets.pop(0))
expected_deferred.append(next_packet)
threadsafe_query(zc, protocol, next_packet, source_ip, const._MDNS_PORT, None)
assert protocol._deferred[source_ip] == expected_deferred
assert source_ip in protocol._timers
timer4 = protocol._timers[source_ip]
if sys.version_info >= (3, 7):
assert timer3.cancelled()
assert timer4 != timer3
for _ in range(8):
time.sleep(0.1)
if source_ip not in protocol._timers and source_ip not in protocol._deferred:
break
assert source_ip not in protocol._deferred
assert source_ip not in protocol._timers
# unregister
zc.registry.async_remove(info)
zc.close()
@pytest.mark.asyncio
async def test_open_close_twice_from_async() -> None:
"""Test we can close twice from a coroutine when using Zeroconf.
Ideally callers switch to using AsyncZeroconf, however there will
be a peroid where they still call the sync wrapper that we want
to ensure will not deadlock on shutdown.
This test is expected to throw warnings about tasks being destroyed
since we force shutdown right away since we don't want to block
callers event loops and since they aren't using the AsyncZeroconf
version they won't yield with an await like async_close we don't
have much choice but to force things down.
"""
zc = Zeroconf(interfaces=['127.0.0.1'])
zc.close()
zc.close()
await asyncio.sleep(0)
@pytest.mark.asyncio
async def test_multiple_sync_instances_stared_from_async_close():
"""Test we can shutdown multiple sync instances from async."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
zc2 = Zeroconf(interfaces=['127.0.0.1'])
assert zc.loop == zc2.loop
zc.close()
assert zc.loop.is_running()
zc2.close()
assert zc2.loop.is_running()
zc3 = Zeroconf(interfaces=['127.0.0.1'])
assert zc3.loop == zc2.loop
zc3.close()
assert zc3.loop.is_running()
await asyncio.sleep(0)
def test_guard_against_oversized_packets():
"""Ensure we do not process oversized packets.
These packets can quickly overwhelm the system.
"""
zc = Zeroconf(interfaces=['127.0.0.1'])
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
for i in range(5000):
generated.add_answer_at_time(
r.DNSText(
"packet{i}.local.",
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
500,
b'path=/~paulsm/',
),
0,
)
# We are patching to generate an oversized packet
with patch.object(outgoing, "_MAX_MSG_ABSOLUTE", 100000), patch.object(
outgoing, "_MAX_MSG_TYPICAL", 100000
):
over_sized_packet = generated.packets()[0]
assert len(over_sized_packet) > const._MAX_MSG_ABSOLUTE
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
okpacket_record = r.DNSText(
"okpacket.local.",
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
500,
b'path=/~paulsm/',
)
generated.add_answer_at_time(
okpacket_record,
0,
)
ok_packet = generated.packets()[0]
# We cannot test though the network interface as some operating systems
# will guard against the oversized packet and we won't see it.
listener = _core.AsyncListener(zc)
listener.transport = unittest.mock.MagicMock()
listener.datagram_received(ok_packet, ('127.0.0.1', const._MDNS_PORT))
assert zc.cache.async_get_unique(okpacket_record) is not None
listener.datagram_received(over_sized_packet, ('127.0.0.1', const._MDNS_PORT))
assert (
zc.cache.async_get_unique(
r.DNSText(
"packet0.local.",
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
500,
b'path=/~paulsm/',
)
)
is None
)
zc.close()
def test_guard_against_duplicate_packets():
"""Ensure we do not process duplicate packets.
These packets can quickly overwhelm the system.
"""
zc = Zeroconf(interfaces=['127.0.0.1'])
listener = _core.AsyncListener(zc)
assert listener.suppress_duplicate_packet(b"first packet", current_time_millis()) is False
assert listener.suppress_duplicate_packet(b"first packet", current_time_millis()) is True
assert listener.suppress_duplicate_packet(b"first packet", current_time_millis()) is True
assert listener.suppress_duplicate_packet(b"first packet", current_time_millis() + 1000) is False
assert listener.suppress_duplicate_packet(b"first packet", current_time_millis()) is True
assert listener.suppress_duplicate_packet(b"other packet", current_time_millis()) is False
assert listener.suppress_duplicate_packet(b"other packet", current_time_millis()) is True
assert listener.suppress_duplicate_packet(b"other packet", current_time_millis() + 1000) is False
assert listener.suppress_duplicate_packet(b"first packet", current_time_millis()) is False
zc.close()
def test_shutdown_while_register_in_process():
"""Test we can shutdown while registering a service in another thread."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# start a browser
type_ = "_homeassistant._tcp.local."
name = "MyTestHome"
info_service = r.ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
{'path': '/~paulsm/'},
"ash-90.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
def _background_register():
zc.register_service(info_service)
bgthread = threading.Thread(target=_background_register, daemon=True)
bgthread.start()
time.sleep(0.3)
zc.close()
bgthread.join()
@pytest.mark.asyncio
@unittest.skipIf(sys.version_info[:3][1] < 8, 'Requires Python 3.8 or later to patch _async_setup')
@patch("zeroconf._core._STARTUP_TIMEOUT", 0)
@patch("zeroconf._core.AsyncEngine._async_setup")
async def test_event_loop_blocked(mock_start):
"""Test we raise NotRunningException when waiting for startup that times out."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
with pytest.raises(NotRunningException):
await aiozc.zeroconf.async_wait_for_start()
assert aiozc.zeroconf.started is False
07070100000027000081A4000000000000000000000001631651AD00003674000000000000000000000000000000000000002900000000python-zeroconf-0.39.1/tests/test_dns.py#!/usr/bin/env python
""" Unit tests for zeroconf._dns. """
import logging
import os
import socket
import time
import unittest
import unittest.mock
import zeroconf as r
from zeroconf import const, current_time_millis
from zeroconf._dns import DNSRRSet
from zeroconf import (
DNSHinfo,
DNSText,
ServiceInfo,
)
from . import has_working_ipv6
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
class TestDunder(unittest.TestCase):
def test_dns_text_repr(self):
# There was an issue on Python 3 that prevented DNSText's repr
# from working when the text was longer than 10 bytes
text = DNSText('irrelevant', 0, 0, 0, b'12345678901')
repr(text)
text = DNSText('irrelevant', 0, 0, 0, b'123')
repr(text)
def test_dns_hinfo_repr_eq(self):
hinfo = DNSHinfo('irrelevant', const._TYPE_HINFO, 0, 0, 'cpu', 'os')
assert hinfo == hinfo
repr(hinfo)
def test_dns_pointer_repr(self):
pointer = r.DNSPointer('irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, '123')
repr(pointer)
@unittest.skipIf(not has_working_ipv6(), 'Requires IPv6')
@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')
def test_dns_address_repr(self):
address = r.DNSAddress('irrelevant', const._TYPE_SOA, const._CLASS_IN, 1, b'a')
assert repr(address).endswith("b'a'")
address_ipv4 = r.DNSAddress(
'irrelevant', const._TYPE_SOA, const._CLASS_IN, 1, socket.inet_pton(socket.AF_INET, '127.0.0.1')
)
assert repr(address_ipv4).endswith('127.0.0.1')
address_ipv6 = r.DNSAddress(
'irrelevant', const._TYPE_SOA, const._CLASS_IN, 1, socket.inet_pton(socket.AF_INET6, '::1')
)
assert repr(address_ipv6).endswith('::1')
def test_dns_question_repr(self):
question = r.DNSQuestion('irrelevant', const._TYPE_SRV, const._CLASS_IN | const._CLASS_UNIQUE)
repr(question)
assert not question != question
def test_dns_service_repr(self):
service = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'a'
)
repr(service)
def test_dns_record_abc(self):
record = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL)
self.assertRaises(r.AbstractMethodException, record.__eq__, record)
self.assertRaises(r.AbstractMethodException, record.write, None)
def test_dns_record_reset_ttl(self):
record = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL)
time.sleep(1)
record2 = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL)
now = r.current_time_millis()
assert record.created != record2.created
assert record.get_remaining_ttl(now) != record2.get_remaining_ttl(now)
record.reset_ttl(record2)
assert record.ttl == record2.ttl
assert record.created == record2.created
assert record.get_remaining_ttl(now) == record2.get_remaining_ttl(now)
def test_service_info_dunder(self):
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
b'',
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
assert not info != info
repr(info)
def test_service_info_text_properties_not_given(self):
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
info = ServiceInfo(
type_=type_,
name=registration_name,
addresses=[socket.inet_aton("10.0.1.2")],
port=80,
server="ash-2.local.",
)
assert isinstance(info.text, bytes)
repr(info)
def test_dns_outgoing_repr(self):
dns_outgoing = r.DNSOutgoing(const._FLAGS_QR_QUERY)
repr(dns_outgoing)
def test_dns_record_is_expired(self):
record = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, 8)
now = current_time_millis()
assert record.is_expired(now) is False
assert record.is_expired(now + (8 / 2 * 1000)) is False
assert record.is_expired(now + (8 * 1000)) is True
def test_dns_record_is_stale(self):
record = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, 8)
now = current_time_millis()
assert record.is_stale(now) is False
assert record.is_stale(now + (8 / 4.1 * 1000)) is False
assert record.is_stale(now + (8 / 2 * 1000)) is True
assert record.is_stale(now + (8 * 1000)) is True
def test_dns_record_is_recent(self):
now = current_time_millis()
record = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, 8)
assert record.is_recent(now + (8 / 4.1 * 1000)) is True
assert record.is_recent(now + (8 / 3 * 1000)) is False
assert record.is_recent(now + (8 / 2 * 1000)) is False
assert record.is_recent(now + (8 * 1000)) is False
def test_dns_question_hashablity():
"""Test DNSQuestions are hashable."""
record1 = r.DNSQuestion('irrelevant', const._TYPE_A, const._CLASS_IN)
record2 = r.DNSQuestion('irrelevant', const._TYPE_A, const._CLASS_IN)
record_set = {record1, record2}
assert len(record_set) == 1
record_set.add(record1)
assert len(record_set) == 1
record3_dupe = r.DNSQuestion('irrelevant', const._TYPE_A, const._CLASS_IN)
assert record2 == record3_dupe
assert record2.__hash__() == record3_dupe.__hash__()
record_set.add(record3_dupe)
assert len(record_set) == 1
record4_dupe = r.DNSQuestion('notsame', const._TYPE_A, const._CLASS_IN)
assert record2 != record4_dupe
assert record2.__hash__() != record4_dupe.__hash__()
record_set.add(record4_dupe)
assert len(record_set) == 2
def test_dns_record_hashablity_does_not_consider_ttl():
"""Test DNSRecord are hashable."""
# Verify the TTL is not considered in the hash
record1 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, const._DNS_OTHER_TTL, b'same')
record2 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, const._DNS_HOST_TTL, b'same')
record_set = {record1, record2}
assert len(record_set) == 1
record_set.add(record1)
assert len(record_set) == 1
record3_dupe = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, const._DNS_HOST_TTL, b'same')
assert record2 == record3_dupe
assert record2.__hash__() == record3_dupe.__hash__()
record_set.add(record3_dupe)
assert len(record_set) == 1
def test_dns_record_hashablity_does_not_consider_unique():
"""Test DNSRecord are hashable and unique is ignored."""
# Verify the unique value is not considered in the hash
record1 = r.DNSAddress(
'irrelevant', const._TYPE_A, const._CLASS_IN | const._CLASS_UNIQUE, const._DNS_OTHER_TTL, b'same'
)
record2 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, const._DNS_OTHER_TTL, b'same')
assert record1.class_ == record2.class_
assert record1.__hash__() == record2.__hash__()
record_set = {record1, record2}
assert len(record_set) == 1
def test_dns_address_record_hashablity():
"""Test DNSAddress are hashable."""
address1 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 1, b'a')
address2 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 1, b'b')
address3 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 1, b'c')
address4 = r.DNSAddress('irrelevant', const._TYPE_AAAA, const._CLASS_IN, 1, b'c')
record_set = {address1, address2, address3, address4}
assert len(record_set) == 4
record_set.add(address1)
assert len(record_set) == 4
address3_dupe = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 1, b'c')
record_set.add(address3_dupe)
assert len(record_set) == 4
# Verify we can remove records
additional_set = {address1, address2}
record_set -= additional_set
assert record_set == {address3, address4}
def test_dns_hinfo_record_hashablity():
"""Test DNSHinfo are hashable."""
hinfo1 = r.DNSHinfo('irrelevant', const._TYPE_HINFO, 0, 0, 'cpu1', 'os')
hinfo2 = r.DNSHinfo('irrelevant', const._TYPE_HINFO, 0, 0, 'cpu2', 'os')
record_set = {hinfo1, hinfo2}
assert len(record_set) == 2
record_set.add(hinfo1)
assert len(record_set) == 2
hinfo2_dupe = r.DNSHinfo('irrelevant', const._TYPE_HINFO, 0, 0, 'cpu2', 'os')
assert hinfo2 == hinfo2_dupe
assert hinfo2.__hash__() == hinfo2_dupe.__hash__()
record_set.add(hinfo2_dupe)
assert len(record_set) == 2
def test_dns_pointer_record_hashablity():
"""Test DNSPointer are hashable."""
ptr1 = r.DNSPointer('irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, '123')
ptr2 = r.DNSPointer('irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, '456')
record_set = {ptr1, ptr2}
assert len(record_set) == 2
record_set.add(ptr1)
assert len(record_set) == 2
ptr2_dupe = r.DNSPointer('irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, '456')
assert ptr2 == ptr2
assert ptr2.__hash__() == ptr2_dupe.__hash__()
record_set.add(ptr2_dupe)
assert len(record_set) == 2
def test_dns_text_record_hashablity():
"""Test DNSText are hashable."""
text1 = r.DNSText('irrelevant', 0, 0, const._DNS_OTHER_TTL, b'12345678901')
text2 = r.DNSText('irrelevant', 1, 0, const._DNS_OTHER_TTL, b'12345678901')
text3 = r.DNSText('irrelevant', 0, 1, const._DNS_OTHER_TTL, b'12345678901')
text4 = r.DNSText('irrelevant', 0, 0, const._DNS_OTHER_TTL, b'ABCDEFGHIJK')
record_set = {text1, text2, text3, text4}
assert len(record_set) == 4
record_set.add(text1)
assert len(record_set) == 4
text1_dupe = r.DNSText('irrelevant', 0, 0, const._DNS_OTHER_TTL, b'12345678901')
assert text1 == text1_dupe
assert text1.__hash__() == text1_dupe.__hash__()
record_set.add(text1_dupe)
assert len(record_set) == 4
def test_dns_service_record_hashablity():
"""Test DNSService are hashable."""
srv1 = r.DNSService('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'a')
srv2 = r.DNSService('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 1, 80, 'a')
srv3 = r.DNSService('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 81, 'a')
srv4 = r.DNSService('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'ab')
record_set = {srv1, srv2, srv3, srv4}
assert len(record_set) == 4
record_set.add(srv1)
assert len(record_set) == 4
srv1_dupe = r.DNSService(
'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'a'
)
assert srv1 == srv1_dupe
assert srv1.__hash__() == srv1_dupe.__hash__()
record_set.add(srv1_dupe)
assert len(record_set) == 4
def test_dns_service_server_key():
"""Test DNSService server_key is lowercase."""
srv1 = r.DNSService(
'X._tcp._http.local.', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'X.local.'
)
assert srv1.name == 'X._tcp._http.local.'
assert srv1.key == 'x._tcp._http.local.'
assert srv1.server == 'X.local.'
assert srv1.server_key == 'x.local.'
def test_dns_nsec_record_hashablity():
"""Test DNSNsec are hashable."""
nsec1 = r.DNSNsec(
'irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, 'irrelevant', [1, 2, 3]
)
nsec2 = r.DNSNsec(
'irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, 'irrelevant', [1, 2]
)
record_set = {nsec1, nsec2}
assert len(record_set) == 2
record_set.add(nsec1)
assert len(record_set) == 2
nsec2_dupe = r.DNSNsec(
'irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, 'irrelevant', [1, 2]
)
assert nsec2 == nsec2_dupe
assert nsec2.__hash__() == nsec2_dupe.__hash__()
record_set.add(nsec2_dupe)
assert len(record_set) == 2
def test_rrset_does_not_consider_ttl():
"""Test DNSRRSet does not consider the ttl in the hash."""
longarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 100, b'same')
shortarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 10, b'same')
longaaaarec = r.DNSAddress('irrelevant', const._TYPE_AAAA, const._CLASS_IN, 100, b'same')
shortaaaarec = r.DNSAddress('irrelevant', const._TYPE_AAAA, const._CLASS_IN, 10, b'same')
rrset = DNSRRSet([longarec, shortaaaarec])
assert rrset.suppresses(longarec)
assert rrset.suppresses(shortarec)
assert not rrset.suppresses(longaaaarec)
assert rrset.suppresses(shortaaaarec)
verylongarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 1000, b'same')
longarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 100, b'same')
mediumarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 60, b'same')
shortarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 10, b'same')
rrset2 = DNSRRSet([mediumarec])
assert not rrset2.suppresses(verylongarec)
assert rrset2.suppresses(longarec)
assert rrset2.suppresses(mediumarec)
assert rrset2.suppresses(shortarec)
07070100000028000081A4000000000000000000000001631651AD000013AC000000000000000000000000000000000000003000000000python-zeroconf-0.39.1/tests/test_exceptions.py#!/usr/bin/env python
""" Unit tests for zeroconf._exceptions """
import logging
import unittest
import unittest.mock
import zeroconf as r
from zeroconf import (
ServiceInfo,
Zeroconf,
)
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
class Exceptions(unittest.TestCase):
browser = None # type: Zeroconf
@classmethod
def setUpClass(cls):
cls.browser = Zeroconf(interfaces=['127.0.0.1'])
@classmethod
def tearDownClass(cls):
cls.browser.close()
del cls.browser
def test_bad_service_info_name(self):
self.assertRaises(r.BadTypeInNameException, self.browser.get_service_info, "type", "type_not")
def test_bad_service_names(self):
bad_names_to_try = (
'',
'local',
'_tcp.local.',
'_udp.local.',
'._udp.local.',
'_@._tcp.local.',
'_A@._tcp.local.',
'_x--x._tcp.local.',
'_-x._udp.local.',
'_x-._tcp.local.',
'_22._udp.local.',
'_2-2._tcp.local.',
'\x00._x._udp.local.',
)
for name in bad_names_to_try:
self.assertRaises(r.BadTypeInNameException, self.browser.get_service_info, name, 'x.' + name)
def test_bad_local_names_for_get_service_info(self):
bad_names_to_try = (
'homekitdev._nothttp._tcp.local.',
'homekitdev._http._udp.local.',
)
for name in bad_names_to_try:
self.assertRaises(
r.BadTypeInNameException, self.browser.get_service_info, '_http._tcp.local.', name
)
def test_good_instance_names(self):
assert r.service_type_name('.._x._tcp.local.') == '_x._tcp.local.'
assert r.service_type_name('x.y._http._tcp.local.') == '_http._tcp.local.'
assert r.service_type_name('1.2.3._mqtt._tcp.local.') == '_mqtt._tcp.local.'
assert r.service_type_name('x.sub._http._tcp.local.') == '_http._tcp.local.'
assert (
r.service_type_name('6d86f882b90facee9170ad3439d72a4d6ee9f511._zget._http._tcp.local.')
== '_http._tcp.local.'
)
def test_good_instance_names_without_protocol(self):
good_names_to_try = (
"Rachio-C73233.local.",
'YeelightColorBulb-3AFD.local.',
'YeelightTunableBulb-7220.local.',
"AlexanderHomeAssistant 74651D.local.",
'iSmartGate-152.local.',
'MyQ-FGA.local.',
'lutron-02c4392a.local.',
'WICED-hap-3E2734.local.',
'MyHost.local.',
'MyHost.sub.local.',
)
for name in good_names_to_try:
assert r.service_type_name(name, strict=False) == 'local.'
for name in good_names_to_try:
# Raises without strict=False
self.assertRaises(r.BadTypeInNameException, r.service_type_name, name)
def test_bad_types(self):
bad_names_to_try = (
'._x._tcp.local.',
'a' * 64 + '._sub._http._tcp.local.',
'a' * 62 + 'â._sub._http._tcp.local.',
)
for name in bad_names_to_try:
self.assertRaises(r.BadTypeInNameException, r.service_type_name, name)
def test_bad_sub_types(self):
bad_names_to_try = (
'_sub._http._tcp.local.',
'._sub._http._tcp.local.',
'\x7f._sub._http._tcp.local.',
'\x1f._sub._http._tcp.local.',
)
for name in bad_names_to_try:
self.assertRaises(r.BadTypeInNameException, r.service_type_name, name)
def test_good_service_names(self):
good_names_to_try = (
('_x._tcp.local.', '_x._tcp.local.'),
('_x._udp.local.', '_x._udp.local.'),
('_12345-67890-abc._udp.local.', '_12345-67890-abc._udp.local.'),
('x._sub._http._tcp.local.', '_http._tcp.local.'),
('a' * 63 + '._sub._http._tcp.local.', '_http._tcp.local.'),
('a' * 61 + 'â._sub._http._tcp.local.', '_http._tcp.local.'),
)
for name, result in good_names_to_try:
assert r.service_type_name(name) == result
assert r.service_type_name('_one_two._tcp.local.', strict=False) == '_one_two._tcp.local.'
def test_invalid_addresses(self):
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
bad = (b'127.0.0.1', b'::1')
for addr in bad:
self.assertRaisesRegex(
TypeError,
'Addresses must either ',
ServiceInfo,
type_,
registration_name,
port=80,
addresses=[addr],
)
07070100000029000081A4000000000000000000000001631651AD0000F503000000000000000000000000000000000000002E00000000python-zeroconf-0.39.1/tests/test_handlers.py#!/usr/bin/env python
""" Unit tests for zeroconf._handlers """
import asyncio
import logging
import os
import pytest
import socket
import time
import unittest
import unittest.mock
from typing import List
import zeroconf as r
from zeroconf import _handlers, ServiceInfo, Zeroconf, current_time_millis
from zeroconf import const
from zeroconf._handlers import construct_outgoing_multicast_answers, MulticastOutgoingQueue
from zeroconf._utils.time import millis_to_seconds
from zeroconf.asyncio import AsyncZeroconf
from . import _clear_cache, _inject_response, has_working_ipv6
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
class TestRegistrar(unittest.TestCase):
def test_ttl(self):
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# service definition
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
nbr_answers = nbr_additionals = nbr_authorities = 0
def get_ttl(record_type):
if expected_ttl is not None:
return expected_ttl
elif record_type in [const._TYPE_A, const._TYPE_SRV]:
return const._DNS_HOST_TTL
else:
return const._DNS_OTHER_TTL
def _process_outgoing_packet(out):
"""Sends an outgoing packet."""
nonlocal nbr_answers, nbr_additionals, nbr_authorities
for answer, time_ in out.answers:
nbr_answers += 1
assert answer.ttl == get_ttl(answer.type)
for answer in out.additionals:
nbr_additionals += 1
assert answer.ttl == get_ttl(answer.type)
for answer in out.authorities:
nbr_authorities += 1
assert answer.ttl == get_ttl(answer.type)
# register service with default TTL
expected_ttl = None
for _ in range(3):
_process_outgoing_packet(zc.generate_service_query(info))
zc.registry.async_add(info)
for _ in range(3):
_process_outgoing_packet(zc.generate_service_broadcast(info, None))
assert nbr_answers == 12 and nbr_additionals == 0 and nbr_authorities == 3
nbr_answers = nbr_additionals = nbr_authorities = 0
# query
query = r.DNSOutgoing(const._FLAGS_QR_QUERY | const._FLAGS_AA)
assert query.is_query() is True
query.add_question(r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN))
query.add_question(r.DNSQuestion(info.name, const._TYPE_SRV, const._CLASS_IN))
query.add_question(r.DNSQuestion(info.name, const._TYPE_TXT, const._CLASS_IN))
query.add_question(r.DNSQuestion(info.server, const._TYPE_A, const._CLASS_IN))
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
_process_outgoing_packet(construct_outgoing_multicast_answers(question_answers.mcast_aggregate))
# The additonals should all be suppresed since they are all in the answers section
# There will be one NSEC additional to indicate the lack of AAAA record
#
assert nbr_answers == 4 and nbr_additionals == 1 and nbr_authorities == 0
nbr_answers = nbr_additionals = nbr_authorities = 0
# unregister
expected_ttl = 0
zc.registry.async_remove(info)
for _ in range(3):
_process_outgoing_packet(zc.generate_service_broadcast(info, 0))
assert nbr_answers == 12 and nbr_additionals == 0 and nbr_authorities == 0
nbr_answers = nbr_additionals = nbr_authorities = 0
expected_ttl = None
for _ in range(3):
_process_outgoing_packet(zc.generate_service_query(info))
zc.registry.async_add(info)
# register service with custom TTL
expected_ttl = const._DNS_HOST_TTL * 2
assert expected_ttl != const._DNS_HOST_TTL
for _ in range(3):
_process_outgoing_packet(zc.generate_service_broadcast(info, expected_ttl))
assert nbr_answers == 12 and nbr_additionals == 0 and nbr_authorities == 3
nbr_answers = nbr_additionals = nbr_authorities = 0
# query
expected_ttl = None
query = r.DNSOutgoing(const._FLAGS_QR_QUERY | const._FLAGS_AA)
query.add_question(r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN))
query.add_question(r.DNSQuestion(info.name, const._TYPE_SRV, const._CLASS_IN))
query.add_question(r.DNSQuestion(info.name, const._TYPE_TXT, const._CLASS_IN))
query.add_question(r.DNSQuestion(info.server, const._TYPE_A, const._CLASS_IN))
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
_process_outgoing_packet(construct_outgoing_multicast_answers(question_answers.mcast_aggregate))
# There will be one NSEC additional to indicate the lack of AAAA record
assert nbr_answers == 4 and nbr_additionals == 1 and nbr_authorities == 0
nbr_answers = nbr_additionals = nbr_authorities = 0
# unregister
expected_ttl = 0
zc.registry.async_remove(info)
for _ in range(3):
_process_outgoing_packet(zc.generate_service_broadcast(info, 0))
assert nbr_answers == 12 and nbr_additionals == 0 and nbr_authorities == 0
nbr_answers = nbr_additionals = nbr_authorities = 0
zc.close()
def test_name_conflicts(self):
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
type_ = "_homeassistant._tcp.local."
name = "Home"
registration_name = f"{name}.{type_}"
info = ServiceInfo(
type_,
name=registration_name,
server="random123.local.",
addresses=[socket.inet_pton(socket.AF_INET, "1.2.3.4")],
port=80,
properties={"version": "1.0"},
)
zc.register_service(info)
conflicting_info = ServiceInfo(
type_,
name=registration_name,
server="random456.local.",
addresses=[socket.inet_pton(socket.AF_INET, "4.5.6.7")],
port=80,
properties={"version": "1.0"},
)
with pytest.raises(r.NonUniqueNameException):
zc.register_service(conflicting_info)
zc.close()
def test_register_and_lookup_type_by_uppercase_name(self):
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
type_ = "_mylowertype._tcp.local."
name = "Home"
registration_name = f"{name}.{type_}"
info = ServiceInfo(
type_,
name=registration_name,
server="random123.local.",
addresses=[socket.inet_pton(socket.AF_INET, "1.2.3.4")],
port=80,
properties={"version": "1.0"},
)
zc.register_service(info)
_clear_cache(zc)
info = ServiceInfo(type_, registration_name)
info.load_from_cache(zc)
assert info.addresses == []
out = r.DNSOutgoing(const._FLAGS_QR_QUERY)
out.add_question(r.DNSQuestion(type_.upper(), const._TYPE_PTR, const._CLASS_IN))
zc.send(out)
time.sleep(1)
info = ServiceInfo(type_, registration_name)
info.load_from_cache(zc)
assert info.addresses == [socket.inet_pton(socket.AF_INET, "1.2.3.4")]
assert info.properties == {b"version": b"1.0"}
zc.close()
def test_ptr_optimization():
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# service definition
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
# register
zc.register_service(info)
# Verify we won't respond for 1s with the same multicast
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
query.add_question(r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN))
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
# Since we sent the PTR in the last second, they
# should end up in the delayed at least one second bucket
assert question_answers.mcast_aggregate_last_second
# Clear the cache to allow responding again
_clear_cache(zc)
# Verify we will now respond
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
query.add_question(r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN))
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate_last_second
has_srv = has_txt = has_a = False
nbr_additionals = 0
nbr_answers = len(question_answers.mcast_aggregate)
additionals = set().union(*question_answers.mcast_aggregate.values())
for answer in additionals:
nbr_additionals += 1
if answer.type == const._TYPE_SRV:
has_srv = True
elif answer.type == const._TYPE_TXT:
has_txt = True
elif answer.type == const._TYPE_A:
has_a = True
assert nbr_answers == 1 and nbr_additionals == 4
# There will be one NSEC additional to indicate the lack of AAAA record
assert has_srv and has_txt and has_a
# unregister
zc.unregister_service(info)
zc.close()
@unittest.skipIf(not has_working_ipv6(), 'Requires IPv6')
@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')
def test_any_query_for_ptr():
"""Test that queries for ANY will return PTR records and the response is aggregated."""
zc = Zeroconf(interfaces=['127.0.0.1'])
type_ = "_anyptr._tcp.local."
name = "knownname"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
server_name = "ash-2.local."
ipv6_address = socket.inet_pton(socket.AF_INET6, "2001:db8::1")
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, server_name, addresses=[ipv6_address])
zc.registry.async_add(info)
_clear_cache(zc)
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(type_, const._TYPE_ANY, const._CLASS_IN)
generated.add_question(question)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
mcast_answers = list(question_answers.mcast_aggregate)
assert mcast_answers[0].name == type_
assert mcast_answers[0].alias == registration_name
# unregister
zc.registry.async_remove(info)
zc.close()
@unittest.skipIf(not has_working_ipv6(), 'Requires IPv6')
@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')
def test_aaaa_query():
"""Test that queries for AAAA records work and should respond right away."""
zc = Zeroconf(interfaces=['127.0.0.1'])
type_ = "_knownaaaservice._tcp.local."
name = "knownname"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
server_name = "ash-2.local."
ipv6_address = socket.inet_pton(socket.AF_INET6, "2001:db8::1")
info = ServiceInfo(type_, registration_name, 80, 0, 0, desc, server_name, addresses=[ipv6_address])
zc.registry.async_add(info)
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(server_name, const._TYPE_AAAA, const._CLASS_IN)
generated.add_question(question)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
mcast_answers = list(question_answers.mcast_now)
assert mcast_answers[0].address == ipv6_address
# unregister
zc.registry.async_remove(info)
zc.close()
@unittest.skipIf(not has_working_ipv6(), 'Requires IPv6')
@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')
def test_a_and_aaaa_record_fate_sharing():
"""Test that queries for AAAA always return A records in the additionals and should respond right away."""
zc = Zeroconf(interfaces=['127.0.0.1'])
type_ = "_a-and-aaaa-service._tcp.local."
name = "knownname"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
server_name = "ash-2.local."
ipv6_address = socket.inet_pton(socket.AF_INET6, "2001:db8::1")
ipv4_address = socket.inet_aton("10.0.1.2")
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, server_name, addresses=[ipv6_address, ipv4_address]
)
aaaa_record = info.dns_addresses(version=r.IPVersion.V6Only)[0]
a_record = info.dns_addresses(version=r.IPVersion.V4Only)[0]
zc.registry.async_add(info)
# Test AAAA query
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(server_name, const._TYPE_AAAA, const._CLASS_IN)
generated.add_question(question)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
additionals = set().union(*question_answers.mcast_now.values())
assert aaaa_record in question_answers.mcast_now
assert a_record in additionals
assert len(question_answers.mcast_now) == 1
assert len(additionals) == 1
# Test A query
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(server_name, const._TYPE_A, const._CLASS_IN)
generated.add_question(question)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
additionals = set().union(*question_answers.mcast_now.values())
assert a_record in question_answers.mcast_now
assert aaaa_record in additionals
assert len(question_answers.mcast_now) == 1
assert len(additionals) == 1
# unregister
zc.registry.async_remove(info)
zc.close()
def test_unicast_response():
"""Ensure we send a unicast response when the source port is not the MDNS port."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# service definition
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
# register
zc.registry.async_add(info)
_clear_cache(zc)
# query
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
query.add_question(r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN))
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], True
)
for answers in (question_answers.ucast, question_answers.mcast_aggregate):
has_srv = has_txt = has_a = has_aaaa = has_nsec = False
nbr_additionals = 0
nbr_answers = len(answers)
additionals = set().union(*answers.values())
for answer in additionals:
nbr_additionals += 1
if answer.type == const._TYPE_SRV:
has_srv = True
elif answer.type == const._TYPE_TXT:
has_txt = True
elif answer.type == const._TYPE_A:
has_a = True
elif answer.type == const._TYPE_AAAA:
has_aaaa = True
elif answer.type == const._TYPE_NSEC:
has_nsec = True
# There will be one NSEC additional to indicate the lack of AAAA record
assert nbr_answers == 1 and nbr_additionals == 4
assert has_srv and has_txt and has_a and has_nsec
assert not has_aaaa
# unregister
zc.registry.async_remove(info)
zc.close()
@pytest.mark.asyncio
async def test_probe_answered_immediately():
"""Verify probes are responded to immediately."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# service definition
type_ = "_test-srvc-type._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
zc.registry.async_add(info)
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
query.add_question(question)
query.add_authorative_answer(info.dns_pointer())
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
assert not question_answers.ucast
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
assert question_answers.mcast_now
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
question.unicast = True
query.add_question(question)
query.add_authorative_answer(info.dns_pointer())
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
assert question_answers.ucast
assert question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
zc.close()
def test_qu_response():
"""Handle multicast incoming with the QU bit set."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# service definition
type_ = "_test-srvc-type._tcp.local."
other_type_ = "_notthesame._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
registration_name2 = f"{name}.{other_type_}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
info2 = ServiceInfo(
other_type_,
registration_name2,
80,
0,
0,
desc,
"ash-other.local.",
addresses=[socket.inet_aton("10.0.4.2")],
)
# register
zc.register_service(info)
def _validate_complete_response(answers):
has_srv = has_txt = has_a = has_aaaa = has_nsec = False
nbr_answers = len(answers.keys())
additionals = set().union(*answers.values())
nbr_additionals = len(additionals)
for answer in additionals:
if answer.type == const._TYPE_SRV:
has_srv = True
elif answer.type == const._TYPE_TXT:
has_txt = True
elif answer.type == const._TYPE_A:
has_a = True
elif answer.type == const._TYPE_AAAA:
has_aaaa = True
elif answer.type == const._TYPE_NSEC:
has_nsec = True
assert nbr_answers == 1 and nbr_additionals == 4
assert has_srv and has_txt and has_a and has_nsec
assert not has_aaaa
# With QU should respond to only unicast when the answer has been recently multicast
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
question.unicast = True # Set the QU bit
assert question.unicast is True
query.add_question(question)
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
_validate_complete_response(question_answers.ucast)
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
_clear_cache(zc)
# With QU should respond to only multicast since the response hasn't been seen since 75% of the ttl
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
question.unicast = True # Set the QU bit
assert question.unicast is True
query.add_question(question)
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
assert not question_answers.ucast
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate
_validate_complete_response(question_answers.mcast_now)
# With QU set and an authorative answer (probe) should respond to both unitcast and multicast since the response hasn't been seen since 75% of the ttl
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
question.unicast = True # Set the QU bit
assert question.unicast is True
query.add_question(question)
query.add_authorative_answer(info2.dns_pointer())
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
_validate_complete_response(question_answers.ucast)
_validate_complete_response(question_answers.mcast_now)
_inject_response(
zc, r.DNSIncoming(construct_outgoing_multicast_answers(question_answers.mcast_now).packets()[0])
)
# With the cache repopulated; should respond to only unicast when the answer has been recently multicast
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
question.unicast = True # Set the QU bit
assert question.unicast is True
query.add_question(question)
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
_validate_complete_response(question_answers.ucast)
# unregister
zc.unregister_service(info)
zc.close()
def test_known_answer_supression():
zc = Zeroconf(interfaces=['127.0.0.1'])
type_ = "_knownanswersv8._tcp.local."
name = "knownname"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
server_name = "ash-2.local."
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, server_name, addresses=[socket.inet_aton("10.0.1.2")]
)
zc.registry.async_add(info)
now = current_time_millis()
_clear_cache(zc)
# Test PTR supression
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(type_, const._TYPE_PTR, const._CLASS_IN)
generated.add_question(question)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(type_, const._TYPE_PTR, const._CLASS_IN)
generated.add_question(question)
generated.add_answer_at_time(info.dns_pointer(), now)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
# Test A supression
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(server_name, const._TYPE_A, const._CLASS_IN)
generated.add_question(question)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(server_name, const._TYPE_A, const._CLASS_IN)
generated.add_question(question)
for dns_address in info.dns_addresses():
generated.add_answer_at_time(dns_address, now)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
# Test NSEC record returned when there is no AAAA record and we expectly ask
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(server_name, const._TYPE_AAAA, const._CLASS_IN)
generated.add_question(question)
for dns_address in info.dns_addresses():
generated.add_answer_at_time(dns_address, now)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
expected_nsec_record: r.DNSNsec = list(question_answers.mcast_now)[0]
assert const._TYPE_A not in expected_nsec_record.rdtypes
assert const._TYPE_AAAA in expected_nsec_record.rdtypes
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
# Test SRV supression
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(registration_name, const._TYPE_SRV, const._CLASS_IN)
generated.add_question(question)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(registration_name, const._TYPE_SRV, const._CLASS_IN)
generated.add_question(question)
generated.add_answer_at_time(info.dns_service(), now)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
# Test TXT supression
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(registration_name, const._TYPE_TXT, const._CLASS_IN)
generated.add_question(question)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(registration_name, const._TYPE_TXT, const._CLASS_IN)
generated.add_question(question)
generated.add_answer_at_time(info.dns_text(), now)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
# unregister
zc.registry.async_remove(info)
zc.close()
def test_multi_packet_known_answer_supression():
zc = Zeroconf(interfaces=['127.0.0.1'])
type_ = "_handlermultis._tcp.local."
name = "knownname"
name2 = "knownname2"
name3 = "knownname3"
registration_name = f"{name}.{type_}"
registration2_name = f"{name2}.{type_}"
registration3_name = f"{name3}.{type_}"
desc = {'path': '/~paulsm/'}
server_name = "ash-2.local."
server_name2 = "ash-3.local."
server_name3 = "ash-4.local."
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, server_name, addresses=[socket.inet_aton("10.0.1.2")]
)
info2 = ServiceInfo(
type_, registration2_name, 80, 0, 0, desc, server_name2, addresses=[socket.inet_aton("10.0.1.2")]
)
info3 = ServiceInfo(
type_, registration3_name, 80, 0, 0, desc, server_name3, addresses=[socket.inet_aton("10.0.1.2")]
)
zc.registry.async_add(info)
zc.registry.async_add(info2)
zc.registry.async_add(info3)
now = current_time_millis()
_clear_cache(zc)
# Test PTR supression
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(type_, const._TYPE_PTR, const._CLASS_IN)
generated.add_question(question)
for _ in range(1000):
# Add so many answers we end up with another packet
generated.add_answer_at_time(info.dns_pointer(), now)
generated.add_answer_at_time(info2.dns_pointer(), now)
generated.add_answer_at_time(info3.dns_pointer(), now)
packets = generated.packets()
assert len(packets) > 1
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
# unregister
zc.registry.async_remove(info)
zc.registry.async_remove(info2)
zc.registry.async_remove(info3)
zc.close()
def test_known_answer_supression_service_type_enumeration_query():
zc = Zeroconf(interfaces=['127.0.0.1'])
type_ = "_otherknown._tcp.local."
name = "knownname"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
server_name = "ash-2.local."
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, server_name, addresses=[socket.inet_aton("10.0.1.2")]
)
zc.registry.async_add(info)
type_2 = "_otherknown2._tcp.local."
name = "knownname"
registration_name2 = f"{name}.{type_2}"
desc = {'path': '/~paulsm/'}
server_name2 = "ash-3.local."
info2 = ServiceInfo(
type_2, registration_name2, 80, 0, 0, desc, server_name2, addresses=[socket.inet_aton("10.0.1.2")]
)
zc.registry.async_add(info2)
now = current_time_millis()
_clear_cache(zc)
# Test PTR supression
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(const._SERVICE_TYPE_ENUMERATION_NAME, const._TYPE_PTR, const._CLASS_IN)
generated.add_question(question)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(const._SERVICE_TYPE_ENUMERATION_NAME, const._TYPE_PTR, const._CLASS_IN)
generated.add_question(question)
generated.add_answer_at_time(
r.DNSPointer(
const._SERVICE_TYPE_ENUMERATION_NAME,
const._TYPE_PTR,
const._CLASS_IN,
const._DNS_OTHER_TTL,
type_,
),
now,
)
generated.add_answer_at_time(
r.DNSPointer(
const._SERVICE_TYPE_ENUMERATION_NAME,
const._TYPE_PTR,
const._CLASS_IN,
const._DNS_OTHER_TTL,
type_2,
),
now,
)
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
# unregister
zc.registry.async_remove(info)
zc.registry.async_remove(info2)
zc.close()
# This test uses asyncio because it needs to access the cache directly
# which is not threadsafe
@pytest.mark.asyncio
async def test_qu_response_only_sends_additionals_if_sends_answer():
"""Test that a QU response does not send additionals unless it sends the answer as well."""
# instantiate a zeroconf instance
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zc = aiozc.zeroconf
type_ = "_addtest1._tcp.local."
name = "knownname"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
server_name = "ash-2.local."
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, server_name, addresses=[socket.inet_aton("10.0.1.2")]
)
zc.registry.async_add(info)
type_2 = "_addtest2._tcp.local."
name = "knownname"
registration_name2 = f"{name}.{type_2}"
desc = {'path': '/~paulsm/'}
server_name2 = "ash-3.local."
info2 = ServiceInfo(
type_2, registration_name2, 80, 0, 0, desc, server_name2, addresses=[socket.inet_aton("10.0.1.2")]
)
zc.registry.async_add(info2)
ptr_record = info.dns_pointer()
# Add the PTR record to the cache
zc.cache.async_add_records([ptr_record])
# Add the A record to the cache with 50% ttl remaining
a_record = info.dns_addresses()[0]
a_record.set_created_ttl(current_time_millis() - (a_record.ttl * 1000 / 2), a_record.ttl)
assert not a_record.is_recent(current_time_millis())
zc.cache.async_add_records([a_record])
# With QU should respond to only unicast when the answer has been recently multicast
# even if the additional has not been recently multicast
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
question.unicast = True # Set the QU bit
assert question.unicast is True
query.add_question(question)
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
additionals = set().union(*question_answers.ucast.values())
assert a_record in additionals
assert ptr_record in question_answers.ucast
# Remove the 50% A record and add a 100% A record
zc.cache.async_remove_records([a_record])
a_record = info.dns_addresses()[0]
assert a_record.is_recent(current_time_millis())
zc.cache.async_add_records([a_record])
# With QU should respond to only unicast when the answer has been recently multicast
# even if the additional has not been recently multicast
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
question.unicast = True # Set the QU bit
assert question.unicast is True
query.add_question(question)
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
additionals = set().union(*question_answers.ucast.values())
assert a_record in additionals
assert ptr_record in question_answers.ucast
# Remove the 100% PTR record and add a 50% PTR record
zc.cache.async_remove_records([ptr_record])
ptr_record.set_created_ttl(current_time_millis() - (ptr_record.ttl * 1000 / 2), ptr_record.ttl)
assert not ptr_record.is_recent(current_time_millis())
zc.cache.async_add_records([ptr_record])
# With QU should respond to only multicast since the has less
# than 75% of its ttl remaining
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
question.unicast = True # Set the QU bit
assert question.unicast is True
query.add_question(question)
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
assert not question_answers.ucast
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
additionals = set().union(*question_answers.mcast_now.values())
assert a_record in additionals
assert info.dns_text() in additionals
assert info.dns_service() in additionals
assert ptr_record in question_answers.mcast_now
# Ask 2 QU questions, with info the PTR is at 50%, with info2 the PTR is at 100%
# We should get back a unicast reply for info2, but info should be multicasted since its within 75% of its TTL
# With QU should respond to only multicast since the has less
# than 75% of its ttl remaining
query = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
question.unicast = True # Set the QU bit
assert question.unicast is True
query.add_question(question)
question = r.DNSQuestion(info2.type, const._TYPE_PTR, const._CLASS_IN)
question.unicast = True # Set the QU bit
assert question.unicast is True
query.add_question(question)
zc.cache.async_add_records([info2.dns_pointer()]) # Add 100% TTL for info2 to the cache
question_answers = zc.query_handler.async_response(
[r.DNSIncoming(packet) for packet in query.packets()], False
)
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
mcast_now_additionals = set().union(*question_answers.mcast_now.values())
assert a_record in mcast_now_additionals
assert info.dns_text() in mcast_now_additionals
assert info.dns_addresses()[0] in mcast_now_additionals
assert info.dns_pointer() in question_answers.mcast_now
ucast_additionals = set().union(*question_answers.ucast.values())
assert info2.dns_pointer() in question_answers.ucast
assert info2.dns_text() in ucast_additionals
assert info2.dns_service() in ucast_additionals
assert info2.dns_addresses()[0] in ucast_additionals
# unregister
zc.registry.async_remove(info)
await aiozc.async_close()
# This test uses asyncio because it needs to access the cache directly
# which is not threadsafe
@pytest.mark.asyncio
async def test_cache_flush_bit():
"""Test that the cache flush bit sets the TTL to one for matching records."""
# instantiate a zeroconf instance
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zc = aiozc.zeroconf
type_ = "_cacheflush._tcp.local."
name = "knownname"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
server_name = "server-uu1.local."
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, server_name, addresses=[socket.inet_aton("10.0.1.2")]
)
a_record = info.dns_addresses()[0]
zc.cache.async_add_records([info.dns_pointer(), a_record, info.dns_text(), info.dns_service()])
info.addresses = [socket.inet_aton("10.0.1.5"), socket.inet_aton("10.0.1.6")]
new_records = info.dns_addresses()
for new_record in new_records:
assert new_record.unique is True
original_a_record = zc.cache.async_get_unique(a_record)
# Do the run within 1s to verify the original record is not going to be expired
out = r.DNSOutgoing(const._FLAGS_QR_RESPONSE | const._FLAGS_AA, multicast=True)
for answer in new_records:
out.add_answer_at_time(answer, 0)
for packet in out.packets():
zc.record_manager.async_updates_from_response(r.DNSIncoming(packet))
assert zc.cache.async_get_unique(a_record) is original_a_record
assert original_a_record.ttl != 1
for record in new_records:
assert zc.cache.async_get_unique(record) is not None
original_a_record.created = current_time_millis() - 1001
# Do the run within 1s to verify the original record is not going to be expired
out = r.DNSOutgoing(const._FLAGS_QR_RESPONSE | const._FLAGS_AA, multicast=True)
for answer in new_records:
out.add_answer_at_time(answer, 0)
for packet in out.packets():
zc.record_manager.async_updates_from_response(r.DNSIncoming(packet))
assert original_a_record.ttl == 1
for record in new_records:
assert zc.cache.async_get_unique(record) is not None
cached_records = [zc.cache.async_get_unique(record) for record in new_records]
for record in cached_records:
record.created = current_time_millis() - 1001
fresh_address = socket.inet_aton("4.4.4.4")
info.addresses = [fresh_address]
# Do the run within 1s to verify the two new records get marked as expired
out = r.DNSOutgoing(const._FLAGS_QR_RESPONSE | const._FLAGS_AA, multicast=True)
for answer in info.dns_addresses():
out.add_answer_at_time(answer, 0)
for packet in out.packets():
zc.record_manager.async_updates_from_response(r.DNSIncoming(packet))
for record in cached_records:
assert record.ttl == 1
for entry in zc.cache.async_all_by_details(server_name, const._TYPE_A, const._CLASS_IN):
if entry.address == fresh_address:
assert entry.ttl > 1
else:
assert entry.ttl == 1
# Wait for the ttl 1 records to expire
await asyncio.sleep(1.1)
loaded_info = r.ServiceInfo(type_, registration_name)
loaded_info.load_from_cache(zc)
assert loaded_info.addresses == info.addresses
await aiozc.async_close()
# This test uses asyncio because it needs to access the cache directly
# which is not threadsafe
@pytest.mark.asyncio
async def test_record_update_manager_add_listener_callsback_existing_records():
"""Test that the RecordUpdateManager will callback existing records."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zc: Zeroconf = aiozc.zeroconf
updated = []
class MyListener(r.RecordUpdateListener):
"""A RecordUpdateListener that does not implement update_records."""
def async_update_records(self, zc: 'Zeroconf', now: float, records: List[r.RecordUpdate]) -> None:
"""Update multiple records in one shot."""
updated.extend(records)
type_ = "_cacheflush._tcp.local."
name = "knownname"
registration_name = f"{name}.{type_}"
desc = {'path': '/~paulsm/'}
server_name = "server-uu1.local."
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, server_name, addresses=[socket.inet_aton("10.0.1.2")]
)
a_record = info.dns_addresses()[0]
ptr_record = info.dns_pointer()
zc.cache.async_add_records([ptr_record, a_record, info.dns_text(), info.dns_service()])
listener = MyListener()
zc.add_listener(
listener,
[
r.DNSQuestion(type_, const._TYPE_PTR, const._CLASS_IN),
r.DNSQuestion(server_name, const._TYPE_A, const._CLASS_IN),
],
)
await asyncio.sleep(0) # flush out the call_soon_threadsafe
assert {record.new for record in updated} == {ptr_record, a_record}
# The old records should be None so we trigger Add events
# in service browsers instead of Update events
assert {record.old for record in updated} == {None}
await aiozc.async_close()
@pytest.mark.asyncio
async def test_questions_query_handler_populates_the_question_history_from_qm_questions():
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zc = aiozc.zeroconf
now = current_time_millis()
_clear_cache(zc)
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion("_hap._tcp._local.", const._TYPE_PTR, const._CLASS_IN)
question.unicast = False
known_answer = r.DNSPointer(
"_hap._tcp.local.", const._TYPE_PTR, const._CLASS_IN, 10000, 'known-to-other._hap._tcp.local.'
)
generated.add_question(question)
generated.add_answer_at_time(known_answer, 0)
now = r.current_time_millis()
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
assert zc.question_history.suppresses(question, now, {known_answer})
await aiozc.async_close()
@pytest.mark.asyncio
async def test_questions_query_handler_does_not_put_qu_questions_in_history():
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zc = aiozc.zeroconf
now = current_time_millis()
_clear_cache(zc)
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion("_hap._tcp._local.", const._TYPE_PTR, const._CLASS_IN)
question.unicast = True
known_answer = r.DNSPointer(
"_hap._tcp.local.", const._TYPE_PTR, const._CLASS_IN, 10000, 'known-to-other._hap._tcp.local.'
)
generated.add_question(question)
generated.add_answer_at_time(known_answer, 0)
now = r.current_time_millis()
packets = generated.packets()
question_answers = zc.query_handler.async_response([r.DNSIncoming(packet) for packet in packets], False)
assert not question_answers.ucast
assert not question_answers.mcast_now
assert not question_answers.mcast_aggregate
assert not question_answers.mcast_aggregate_last_second
assert not zc.question_history.suppresses(question, now, {known_answer})
await aiozc.async_close()
@pytest.mark.asyncio
async def test_guard_against_low_ptr_ttl():
"""Ensure we enforce a minimum for PTR record ttls to avoid excessive refresh queries from ServiceBrowsers.
Some poorly designed IoT devices can set excessively low PTR
TTLs would will cause ServiceBrowsers to flood the network
with excessive refresh queries.
"""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zc = aiozc.zeroconf
# Apple uses a 15s minimum TTL, however we do not have the same
# level of rate limit and safe guards so we use 1/4 of the recommended value
answer_with_low_ttl = r.DNSPointer(
"myservicelow_tcp._tcp.local.",
const._TYPE_PTR,
const._CLASS_IN | const._CLASS_UNIQUE,
2,
'low.local.',
)
answer_with_normal_ttl = r.DNSPointer(
"myservicelow_tcp._tcp.local.",
const._TYPE_PTR,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
'normal.local.',
)
good_bye_answer = r.DNSPointer(
"myservicelow_tcp._tcp.local.",
const._TYPE_PTR,
const._CLASS_IN | const._CLASS_UNIQUE,
0,
'goodbye.local.',
)
# TTL should be adjusted to a safe value
response = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
response.add_answer_at_time(answer_with_low_ttl, 0)
response.add_answer_at_time(answer_with_normal_ttl, 0)
response.add_answer_at_time(good_bye_answer, 0)
incoming = r.DNSIncoming(response.packets()[0])
zc.record_manager.async_updates_from_response(incoming)
incoming_answer_low = zc.cache.async_get_unique(answer_with_low_ttl)
assert incoming_answer_low.ttl == const._DNS_PTR_MIN_TTL
incoming_answer_normal = zc.cache.async_get_unique(answer_with_normal_ttl)
assert incoming_answer_normal.ttl == const._DNS_OTHER_TTL
assert zc.cache.async_get_unique(good_bye_answer) is None
await aiozc.async_close()
@pytest.mark.asyncio
async def test_duplicate_goodbye_answers_in_packet():
"""Ensure we do not throw an exception when there are duplicate goodbye records in a packet."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zc = aiozc.zeroconf
answer_with_normal_ttl = r.DNSPointer(
"myservicelow_tcp._tcp.local.",
const._TYPE_PTR,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
'host.local.',
)
good_bye_answer = r.DNSPointer(
"myservicelow_tcp._tcp.local.",
const._TYPE_PTR,
const._CLASS_IN | const._CLASS_UNIQUE,
0,
'host.local.',
)
response = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
response.add_answer_at_time(answer_with_normal_ttl, 0)
incoming = r.DNSIncoming(response.packets()[0])
zc.record_manager.async_updates_from_response(incoming)
response = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
response.add_answer_at_time(good_bye_answer, 0)
response.add_answer_at_time(good_bye_answer, 0)
incoming = r.DNSIncoming(response.packets()[0])
zc.record_manager.async_updates_from_response(incoming)
await aiozc.async_close()
@pytest.mark.asyncio
async def test_response_aggregation_timings(run_isolated):
"""Verify multicast respones are aggregated."""
type_ = "_mservice._tcp.local."
type_2 = "_mservice2._tcp.local."
type_3 = "_mservice3._tcp.local."
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
await aiozc.zeroconf.async_wait_for_start()
name = "xxxyyy"
registration_name = f"{name}.{type_}"
registration_name2 = f"{name}.{type_2}"
registration_name3 = f"{name}.{type_3}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
info2 = ServiceInfo(
type_2, registration_name2, 80, 0, 0, desc, "ash-4.local.", addresses=[socket.inet_aton("10.0.1.3")]
)
info3 = ServiceInfo(
type_3, registration_name3, 80, 0, 0, desc, "ash-4.local.", addresses=[socket.inet_aton("10.0.1.3")]
)
aiozc.zeroconf.registry.async_add(info)
aiozc.zeroconf.registry.async_add(info2)
aiozc.zeroconf.registry.async_add(info3)
query = r.DNSOutgoing(const._FLAGS_QR_QUERY, multicast=True)
question = r.DNSQuestion(info.type, const._TYPE_PTR, const._CLASS_IN)
query.add_question(question)
query2 = r.DNSOutgoing(const._FLAGS_QR_QUERY, multicast=True)
question2 = r.DNSQuestion(info2.type, const._TYPE_PTR, const._CLASS_IN)
query2.add_question(question2)
query3 = r.DNSOutgoing(const._FLAGS_QR_QUERY, multicast=True)
question3 = r.DNSQuestion(info3.type, const._TYPE_PTR, const._CLASS_IN)
query3.add_question(question3)
query4 = r.DNSOutgoing(const._FLAGS_QR_QUERY, multicast=True)
query4.add_question(question)
query4.add_question(question2)
zc = aiozc.zeroconf
protocol = zc.engine.protocols[0]
with unittest.mock.patch.object(aiozc.zeroconf, "async_send") as send_mock:
protocol.datagram_received(query.packets()[0], ('127.0.0.1', const._MDNS_PORT))
protocol.datagram_received(query2.packets()[0], ('127.0.0.1', const._MDNS_PORT))
protocol.datagram_received(query.packets()[0], ('127.0.0.1', const._MDNS_PORT))
await asyncio.sleep(0.7)
# Should aggregate into a single answer with up to a 500ms + 120ms delay
calls = send_mock.mock_calls
assert len(calls) == 1
outgoing = send_mock.call_args[0][0]
incoming = r.DNSIncoming(outgoing.packets()[0])
zc.handle_response(incoming)
assert info.dns_pointer() in incoming.answers
assert info2.dns_pointer() in incoming.answers
send_mock.reset_mock()
protocol.datagram_received(query3.packets()[0], ('127.0.0.1', const._MDNS_PORT))
await asyncio.sleep(0.3)
# Should send within 120ms since there are no other
# answers to aggregate with
calls = send_mock.mock_calls
assert len(calls) == 1
outgoing = send_mock.call_args[0][0]
incoming = r.DNSIncoming(outgoing.packets()[0])
zc.handle_response(incoming)
assert info3.dns_pointer() in incoming.answers
send_mock.reset_mock()
# Because the response was sent in the last second we need to make
# sure the next answer is delayed at least a second
aiozc.zeroconf.engine.protocols[0].datagram_received(
query4.packets()[0], ('127.0.0.1', const._MDNS_PORT)
)
await asyncio.sleep(0.5)
# After 0.5 seconds it should not have been sent
# Protect the network against excessive packet flooding
# https://datatracker.ietf.org/doc/html/rfc6762#section-14
calls = send_mock.mock_calls
assert len(calls) == 0
send_mock.reset_mock()
await asyncio.sleep(1.2)
calls = send_mock.mock_calls
assert len(calls) == 1
outgoing = send_mock.call_args[0][0]
incoming = r.DNSIncoming(outgoing.packets()[0])
assert info.dns_pointer() in incoming.answers
await aiozc.async_close()
@pytest.mark.asyncio
async def test_response_aggregation_timings_multiple(run_isolated):
"""Verify multicast responses that are aggregated do not take longer than 620ms to send.
620ms is the maximum random delay of 120ms and 500ms additional for aggregation."""
type_2 = "_mservice2._tcp.local."
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
await aiozc.zeroconf.async_wait_for_start()
name = "xxxyyy"
registration_name2 = f"{name}.{type_2}"
desc = {'path': '/~paulsm/'}
info2 = ServiceInfo(
type_2, registration_name2, 80, 0, 0, desc, "ash-4.local.", addresses=[socket.inet_aton("10.0.1.3")]
)
aiozc.zeroconf.registry.async_add(info2)
query2 = r.DNSOutgoing(const._FLAGS_QR_QUERY, multicast=True)
question2 = r.DNSQuestion(info2.type, const._TYPE_PTR, const._CLASS_IN)
query2.add_question(question2)
zc = aiozc.zeroconf
protocol = zc.engine.protocols[0]
with unittest.mock.patch.object(aiozc.zeroconf, "async_send") as send_mock, unittest.mock.patch.object(
protocol, "suppress_duplicate_packet", return_value=False
):
send_mock.reset_mock()
protocol.datagram_received(query2.packets()[0], ('127.0.0.1', const._MDNS_PORT))
await asyncio.sleep(0.2)
calls = send_mock.mock_calls
assert len(calls) == 1
outgoing = send_mock.call_args[0][0]
incoming = r.DNSIncoming(outgoing.packets()[0])
zc.handle_response(incoming)
assert info2.dns_pointer() in incoming.answers
send_mock.reset_mock()
protocol.datagram_received(query2.packets()[0], ('127.0.0.1', const._MDNS_PORT))
await asyncio.sleep(1.2)
calls = send_mock.mock_calls
assert len(calls) == 1
outgoing = send_mock.call_args[0][0]
incoming = r.DNSIncoming(outgoing.packets()[0])
zc.handle_response(incoming)
assert info2.dns_pointer() in incoming.answers
send_mock.reset_mock()
protocol.datagram_received(query2.packets()[0], ('127.0.0.1', const._MDNS_PORT))
protocol.datagram_received(query2.packets()[0], ('127.0.0.1', const._MDNS_PORT))
# The delay should increase with two packets and
# 900ms is beyond the maximum aggregation delay
# when there is no network protection delay
await asyncio.sleep(0.9)
calls = send_mock.mock_calls
assert len(calls) == 0
# 1000ms (1s network protection delays)
# - 900ms (already slept)
# + 120ms (maximum random delay)
# + 200ms (maximum protected aggregation delay)
# + 20ms (execution time)
await asyncio.sleep(millis_to_seconds(1000 - 900 + 120 + 200 + 20))
calls = send_mock.mock_calls
assert len(calls) == 1
outgoing = send_mock.call_args[0][0]
incoming = r.DNSIncoming(outgoing.packets()[0])
zc.handle_response(incoming)
assert info2.dns_pointer() in incoming.answers
@pytest.mark.asyncio
async def test_response_aggregation_random_delay():
"""Verify the random delay for outgoing multicast will coalesce into a single group
When the random delay is shorter than the last outgoing group,
the groups should be combined.
"""
type_ = "_mservice._tcp.local."
type_2 = "_mservice2._tcp.local."
type_3 = "_mservice3._tcp.local."
type_4 = "_mservice4._tcp.local."
type_5 = "_mservice5._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
registration_name2 = f"{name}.{type_2}"
registration_name3 = f"{name}.{type_3}"
registration_name4 = f"{name}.{type_4}"
registration_name5 = f"{name}.{type_5}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-1.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
info2 = ServiceInfo(
type_2, registration_name2, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.3")]
)
info3 = ServiceInfo(
type_3, registration_name3, 80, 0, 0, desc, "ash-3.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
info4 = ServiceInfo(
type_4, registration_name4, 80, 0, 0, desc, "ash-4.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
info5 = ServiceInfo(
type_5, registration_name5, 80, 0, 0, desc, "ash-5.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
mocked_zc = unittest.mock.MagicMock()
outgoing_queue = MulticastOutgoingQueue(mocked_zc, 0, 500)
now = current_time_millis()
with unittest.mock.patch.object(_handlers, "_MULTICAST_DELAY_RANDOM_INTERVAL", (500, 600)):
outgoing_queue.async_add(now, {info.dns_pointer(): set()})
# The second group should always be coalesced into first group since it will always come before
with unittest.mock.patch.object(_handlers, "_MULTICAST_DELAY_RANDOM_INTERVAL", (300, 400)):
outgoing_queue.async_add(now, {info2.dns_pointer(): set()})
# The third group should always be coalesced into first group since it will always come before
with unittest.mock.patch.object(_handlers, "_MULTICAST_DELAY_RANDOM_INTERVAL", (100, 200)):
outgoing_queue.async_add(now, {info3.dns_pointer(): set(), info4.dns_pointer(): set()})
assert len(outgoing_queue.queue) == 1
assert info.dns_pointer() in outgoing_queue.queue[0].answers
assert info2.dns_pointer() in outgoing_queue.queue[0].answers
assert info3.dns_pointer() in outgoing_queue.queue[0].answers
assert info4.dns_pointer() in outgoing_queue.queue[0].answers
# The forth group should not be coalesced because its scheduled after the last group in the queue
with unittest.mock.patch.object(_handlers, "_MULTICAST_DELAY_RANDOM_INTERVAL", (700, 800)):
outgoing_queue.async_add(now, {info5.dns_pointer(): set()})
assert len(outgoing_queue.queue) == 2
assert info.dns_pointer() not in outgoing_queue.queue[1].answers
assert info2.dns_pointer() not in outgoing_queue.queue[1].answers
assert info3.dns_pointer() not in outgoing_queue.queue[1].answers
assert info4.dns_pointer() not in outgoing_queue.queue[1].answers
assert info5.dns_pointer() in outgoing_queue.queue[1].answers
@pytest.mark.asyncio
async def test_future_answers_are_removed_on_send():
"""Verify any future answers scheduled to be sent are removed when we send."""
type_ = "_mservice._tcp.local."
type_2 = "_mservice2._tcp.local."
name = "xxxyyy"
registration_name = f"{name}.{type_}"
registration_name2 = f"{name}.{type_2}"
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name, 80, 0, 0, desc, "ash-1.local.", addresses=[socket.inet_aton("10.0.1.2")]
)
info2 = ServiceInfo(
type_2, registration_name2, 80, 0, 0, desc, "ash-2.local.", addresses=[socket.inet_aton("10.0.1.3")]
)
mocked_zc = unittest.mock.MagicMock()
outgoing_queue = MulticastOutgoingQueue(mocked_zc, 0, 0)
now = current_time_millis()
with unittest.mock.patch.object(_handlers, "_MULTICAST_DELAY_RANDOM_INTERVAL", (1, 1)):
outgoing_queue.async_add(now, {info.dns_pointer(): set()})
assert len(outgoing_queue.queue) == 1
with unittest.mock.patch.object(_handlers, "_MULTICAST_DELAY_RANDOM_INTERVAL", (2, 2)):
outgoing_queue.async_add(now, {info.dns_pointer(): set()})
assert len(outgoing_queue.queue) == 2
with unittest.mock.patch.object(_handlers, "_MULTICAST_DELAY_RANDOM_INTERVAL", (1000, 1000)):
outgoing_queue.async_add(now, {info2.dns_pointer(): set()})
outgoing_queue.async_add(now, {info.dns_pointer(): set()})
assert len(outgoing_queue.queue) == 3
await asyncio.sleep(0.1)
outgoing_queue.async_ready()
assert len(outgoing_queue.queue) == 1
# The answer should get removed because we just sent it
assert info.dns_pointer() not in outgoing_queue.queue[0].answers
# But the one we have not sent yet shoudl still go out later
assert info2.dns_pointer() in outgoing_queue.queue[0].answers
@pytest.mark.asyncio
async def test_add_listener_warns_when_not_using_record_update_listener(caplog):
"""Log when a listener is added that is not using RecordUpdateListener as a base class."""
aiozc = AsyncZeroconf(interfaces=['127.0.0.1'])
zc: Zeroconf = aiozc.zeroconf
updated = []
class MyListener:
"""A RecordUpdateListener that does not implement update_records."""
def async_update_records(self, zc: 'Zeroconf', now: float, records: List[r.RecordUpdate]) -> None:
"""Update multiple records in one shot."""
updated.extend(records)
zc.add_listener(MyListener(), None)
await asyncio.sleep(0) # flush out any call soons
assert "listeners passed to async_add_listener must inherit from RecordUpdateListener" in caplog.text
await aiozc.async_close()
0707010000002A000081A4000000000000000000000001631651AD000009C6000000000000000000000000000000000000002D00000000python-zeroconf-0.39.1/tests/test_history.py#!/usr/bin/env python
"""Unit tests for _history.py."""
from zeroconf._history import QuestionHistory
import zeroconf as r
import zeroconf.const as const
def test_question_suppression():
history = QuestionHistory()
question = r.DNSQuestion("_hap._tcp._local.", const._TYPE_PTR, const._CLASS_IN)
now = r.current_time_millis()
other_known_answers = {
r.DNSPointer(
"_hap._tcp.local.", const._TYPE_PTR, const._CLASS_IN, 10000, 'known-to-other._hap._tcp.local.'
)
}
our_known_answers = {
r.DNSPointer(
"_hap._tcp.local.", const._TYPE_PTR, const._CLASS_IN, 10000, 'known-to-us._hap._tcp.local.'
)
}
history.add_question_at_time(question, now, other_known_answers)
# Verify the question is suppressed if the known answers are the same
assert history.suppresses(question, now, other_known_answers)
# Verify the question is suppressed if we know the answer to all the known answers
assert history.suppresses(question, now, other_known_answers | our_known_answers)
# Verify the question is not suppressed if our known answers do no include the ones in the last question
assert not history.suppresses(question, now, set())
# Verify the question is not suppressed if our known answers do no include the ones in the last question
assert not history.suppresses(question, now, our_known_answers)
# Verify the question is no longer suppressed after 1s
assert not history.suppresses(question, now + 1000, other_known_answers)
def test_question_expire():
history = QuestionHistory()
question = r.DNSQuestion("_hap._tcp._local.", const._TYPE_PTR, const._CLASS_IN)
now = r.current_time_millis()
other_known_answers = {
r.DNSPointer(
"_hap._tcp.local.", const._TYPE_PTR, const._CLASS_IN, 10000, 'known-to-other._hap._tcp.local.'
)
}
history.add_question_at_time(question, now, other_known_answers)
# Verify the question is suppressed if the known answers are the same
assert history.suppresses(question, now, other_known_answers)
history.async_expire(now)
# Verify the question is suppressed if the known answers are the same since the cache hasn't expired
assert history.suppresses(question, now, other_known_answers)
history.async_expire(now + 1000)
# Verify the question not longer suppressed since the cache has expired
assert not history.suppresses(question, now, other_known_answers)
0707010000002B000081A4000000000000000000000001631651AD000019F0000000000000000000000000000000000000002A00000000python-zeroconf-0.39.1/tests/test_init.py#!/usr/bin/env python
""" Unit tests for zeroconf.py """
import logging
import socket
import time
import unittest
import unittest.mock
from unittest.mock import patch
import zeroconf as r
from zeroconf import ServiceInfo, Zeroconf, const
from . import _inject_responses
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
class Names(unittest.TestCase):
def test_long_name(self):
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
question = r.DNSQuestion(
"this.is.a.very.long.name.with.lots.of.parts.in.it.local.", const._TYPE_SRV, const._CLASS_IN
)
generated.add_question(question)
r.DNSIncoming(generated.packets()[0])
def test_exceedingly_long_name(self):
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
name = "%slocal." % ("part." * 1000)
question = r.DNSQuestion(name, const._TYPE_SRV, const._CLASS_IN)
generated.add_question(question)
r.DNSIncoming(generated.packets()[0])
def test_extra_exceedingly_long_name(self):
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
name = "%slocal." % ("part." * 4000)
question = r.DNSQuestion(name, const._TYPE_SRV, const._CLASS_IN)
generated.add_question(question)
r.DNSIncoming(generated.packets()[0])
def test_exceedingly_long_name_part(self):
name = "%s.local." % ("a" * 1000)
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
question = r.DNSQuestion(name, const._TYPE_SRV, const._CLASS_IN)
generated.add_question(question)
self.assertRaises(r.NamePartTooLongException, generated.packets)
def test_same_name(self):
name = "paired.local."
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
question = r.DNSQuestion(name, const._TYPE_SRV, const._CLASS_IN)
generated.add_question(question)
generated.add_question(question)
r.DNSIncoming(generated.packets()[0])
def test_verify_name_change_with_lots_of_names(self):
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
# create a bunch of servers
type_ = "_my-service._tcp.local."
name = 'a wonderful service'
server_count = 300
self.generate_many_hosts(zc, type_, name, server_count)
# verify that name changing works
self.verify_name_change(zc, type_, name, server_count)
zc.close()
def test_large_packet_exception_log_handling(self):
"""Verify we downgrade debug after warning."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
with patch('zeroconf._logger.log.warning') as mocked_log_warn, patch(
'zeroconf._logger.log.debug'
) as mocked_log_debug:
# now that we have a long packet in our possession, let's verify the
# exception handling.
out = r.DNSOutgoing(const._FLAGS_QR_RESPONSE | const._FLAGS_AA)
out.data.append(b'\0' * 10000)
# mock the zeroconf logger and check for the correct logging backoff
call_counts = mocked_log_warn.call_count, mocked_log_debug.call_count
# try to send an oversized packet
zc.send(out)
assert mocked_log_warn.call_count == call_counts[0]
zc.send(out)
assert mocked_log_warn.call_count == call_counts[0]
# mock the zeroconf logger and check for the correct logging backoff
call_counts = mocked_log_warn.call_count, mocked_log_debug.call_count
# force receive on oversized packet
zc.send(out, const._MDNS_ADDR, const._MDNS_PORT)
zc.send(out, const._MDNS_ADDR, const._MDNS_PORT)
time.sleep(0.3)
r.log.debug(
'warn %d debug %d was %s',
mocked_log_warn.call_count,
mocked_log_debug.call_count,
call_counts,
)
assert mocked_log_debug.call_count > call_counts[0]
# close our zeroconf which will close the sockets
zc.close()
def verify_name_change(self, zc, type_, name, number_hosts):
desc = {'path': '/~paulsm/'}
info_service = ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
# verify name conflict
self.assertRaises(r.NonUniqueNameException, zc.register_service, info_service)
# verify no name conflict https://tools.ietf.org/html/rfc6762#section-6.6
zc.register_service(info_service, cooperating_responders=True)
# Create a new object since allow_name_change will mutate the
# original object and then we will have the wrong service
# in the registry
info_service2 = ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
zc.register_service(info_service2, allow_name_change=True)
assert info_service2.name.split('.')[0] == '%s-%d' % (name, number_hosts + 1)
def generate_many_hosts(self, zc, type_, name, number_hosts):
block_size = 25
number_hosts = int((number_hosts - 1) / block_size + 1) * block_size
out = r.DNSOutgoing(const._FLAGS_QR_RESPONSE | const._FLAGS_AA)
for i in range(1, number_hosts + 1):
next_name = name if i == 1 else '%s-%d' % (name, i)
self.generate_host(out, next_name, type_)
_inject_responses(zc, [r.DNSIncoming(packet) for packet in out.packets()])
@staticmethod
def generate_host(out, host_name, type_):
name = '.'.join((host_name, type_))
out.add_answer_at_time(
r.DNSPointer(type_, const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, name), 0
)
out.add_answer_at_time(
r.DNSService(
type_,
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
0,
0,
80,
name,
),
0,
)
0707010000002C000081A4000000000000000000000001631651AD00000D43000000000000000000000000000000000000002C00000000python-zeroconf-0.39.1/tests/test_logger.py#!/usr/bin/env python
"""Unit tests for logger.py."""
import logging
from unittest.mock import call, patch
from zeroconf._logger import QuietLogger, set_logger_level_if_unset
def test_loading_logger():
"""Test loading logger does not change level unless it is unset."""
log = logging.getLogger('zeroconf')
log.setLevel(logging.CRITICAL)
set_logger_level_if_unset()
log = logging.getLogger('zeroconf')
assert log.level == logging.CRITICAL
log = logging.getLogger('zeroconf')
log.setLevel(logging.NOTSET)
set_logger_level_if_unset()
log = logging.getLogger('zeroconf')
assert log.level == logging.WARNING
def test_log_warning_once():
"""Test we only log with warning level once."""
QuietLogger._seen_logs = {}
quiet_logger = QuietLogger()
with patch("zeroconf._logger.log.warning") as mock_log_warning, patch(
"zeroconf._logger.log.debug"
) as mock_log_debug:
quiet_logger.log_warning_once("the warning")
assert mock_log_warning.mock_calls
assert not mock_log_debug.mock_calls
with patch("zeroconf._logger.log.warning") as mock_log_warning, patch(
"zeroconf._logger.log.debug"
) as mock_log_debug:
quiet_logger.log_warning_once("the warning")
assert not mock_log_warning.mock_calls
assert mock_log_debug.mock_calls
def test_log_exception_warning():
"""Test we only log with warning level once."""
QuietLogger._seen_logs = {}
quiet_logger = QuietLogger()
with patch("zeroconf._logger.log.warning") as mock_log_warning, patch(
"zeroconf._logger.log.debug"
) as mock_log_debug:
quiet_logger.log_exception_warning("the exception warning")
assert mock_log_warning.mock_calls
assert not mock_log_debug.mock_calls
with patch("zeroconf._logger.log.warning") as mock_log_warning, patch(
"zeroconf._logger.log.debug"
) as mock_log_debug:
quiet_logger.log_exception_warning("the exception warning")
assert not mock_log_warning.mock_calls
assert mock_log_debug.mock_calls
def test_llog_exception_debug():
"""Test we only log with a trace once."""
QuietLogger._seen_logs = {}
quiet_logger = QuietLogger()
with patch("zeroconf._logger.log.debug") as mock_log_debug:
quiet_logger.log_exception_debug("the exception")
assert mock_log_debug.mock_calls == [call('the exception', exc_info=True)]
with patch("zeroconf._logger.log.debug") as mock_log_debug:
quiet_logger.log_exception_debug("the exception")
assert mock_log_debug.mock_calls == [call('the exception', exc_info=False)]
def test_log_exception_once():
"""Test we only log with warning level once."""
QuietLogger._seen_logs = {}
quiet_logger = QuietLogger()
exc = Exception()
with patch("zeroconf._logger.log.warning") as mock_log_warning, patch(
"zeroconf._logger.log.debug"
) as mock_log_debug:
quiet_logger.log_exception_once(exc, "the exceptional exception warning")
assert mock_log_warning.mock_calls
assert not mock_log_debug.mock_calls
with patch("zeroconf._logger.log.warning") as mock_log_warning, patch(
"zeroconf._logger.log.debug"
) as mock_log_debug:
quiet_logger.log_exception_once(exc, "the exceptional exception warning")
assert not mock_log_warning.mock_calls
assert mock_log_debug.mock_calls
0707010000002D000081A4000000000000000000000001631651AD0000A2B5000000000000000000000000000000000000002E00000000python-zeroconf-0.39.1/tests/test_protocol.py#!/usr/bin/env python
""" Unit tests for zeroconf._protocol """
import copy
import logging
import os
import socket
import struct
import unittest
import unittest.mock
from typing import cast
import zeroconf as r
from zeroconf import DNSIncoming, const, current_time_millis
from zeroconf import (
DNSHinfo,
DNSText,
)
from . import has_working_ipv6
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
class PacketGeneration(unittest.TestCase):
def test_parse_own_packet_simple(self):
generated = r.DNSOutgoing(0)
r.DNSIncoming(generated.packets()[0])
def test_parse_own_packet_simple_unicast(self):
generated = r.DNSOutgoing(0, False)
r.DNSIncoming(generated.packets()[0])
def test_parse_own_packet_flags(self):
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
r.DNSIncoming(generated.packets()[0])
def test_parse_own_packet_question(self):
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
generated.add_question(r.DNSQuestion("testname.local.", const._TYPE_SRV, const._CLASS_IN))
r.DNSIncoming(generated.packets()[0])
def test_parse_own_packet_nsec(self):
answer = r.DNSNsec(
'eufy HomeBase2-2464._hap._tcp.local.',
const._TYPE_NSEC,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
'eufy HomeBase2-2464._hap._tcp.local.',
[const._TYPE_TXT, const._TYPE_SRV],
)
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
generated.add_answer_at_time(answer, 0)
parsed = r.DNSIncoming(generated.packets()[0])
assert answer in parsed.answers
# Types > 255 should be ignored
answer_invalid_types = r.DNSNsec(
'eufy HomeBase2-2464._hap._tcp.local.',
const._TYPE_NSEC,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
'eufy HomeBase2-2464._hap._tcp.local.',
[const._TYPE_TXT, const._TYPE_SRV, 1000],
)
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
generated.add_answer_at_time(answer_invalid_types, 0)
parsed = r.DNSIncoming(generated.packets()[0])
assert answer in parsed.answers
def test_parse_own_packet_response(self):
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
generated.add_answer_at_time(
r.DNSService(
"æøå.local.",
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
0,
0,
80,
"foo.local.",
),
0,
)
parsed = r.DNSIncoming(generated.packets()[0])
assert len(generated.answers) == 1
assert len(generated.answers) == len(parsed.answers)
def test_adding_empty_answer(self):
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
generated.add_answer_at_time(
None,
0,
)
generated.add_answer_at_time(
r.DNSService(
"æøå.local.",
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
0,
0,
80,
"foo.local.",
),
0,
)
parsed = r.DNSIncoming(generated.packets()[0])
assert len(generated.answers) == 1
assert len(generated.answers) == len(parsed.answers)
def test_adding_expired_answer(self):
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
generated.add_answer_at_time(
r.DNSService(
"æøå.local.",
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
0,
0,
80,
"foo.local.",
),
current_time_millis() + 1000000,
)
parsed = r.DNSIncoming(generated.packets()[0])
assert len(generated.answers) == 0
assert len(generated.answers) == len(parsed.answers)
def test_match_question(self):
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion("testname.local.", const._TYPE_SRV, const._CLASS_IN)
generated.add_question(question)
parsed = r.DNSIncoming(generated.packets()[0])
assert len(generated.questions) == 1
assert len(generated.questions) == len(parsed.questions)
assert question == parsed.questions[0]
def test_suppress_answer(self):
query_generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
question = r.DNSQuestion("testname.local.", const._TYPE_SRV, const._CLASS_IN)
query_generated.add_question(question)
answer1 = r.DNSService(
"testname1.local.",
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
0,
0,
80,
"foo.local.",
)
staleanswer2 = r.DNSService(
"testname2.local.",
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL / 2,
0,
0,
80,
"foo.local.",
)
answer2 = r.DNSService(
"testname2.local.",
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
0,
0,
80,
"foo.local.",
)
query_generated.add_answer_at_time(answer1, 0)
query_generated.add_answer_at_time(staleanswer2, 0)
query = r.DNSIncoming(query_generated.packets()[0])
# Should be suppressed
response = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
response.add_answer(query, answer1)
assert len(response.answers) == 0
# Should not be suppressed, TTL in query is too short
response.add_answer(query, answer2)
assert len(response.answers) == 1
# Should not be suppressed, name is different
tmp = copy.copy(answer1)
tmp.key = "testname3.local."
tmp.name = "testname3.local."
response.add_answer(query, tmp)
assert len(response.answers) == 2
# Should not be suppressed, type is different
tmp = copy.copy(answer1)
tmp.type = const._TYPE_A
response.add_answer(query, tmp)
assert len(response.answers) == 3
# Should not be suppressed, class is different
tmp = copy.copy(answer1)
tmp.class_ = const._CLASS_NONE
response.add_answer(query, tmp)
assert len(response.answers) == 4
# ::TODO:: could add additional tests for DNSAddress, DNSHinfo, DNSPointer, DNSText, DNSService
def test_dns_hinfo(self):
generated = r.DNSOutgoing(0)
generated.add_additional_answer(DNSHinfo('irrelevant', const._TYPE_HINFO, 0, 0, 'cpu', 'os'))
parsed = r.DNSIncoming(generated.packets()[0])
answer = cast(r.DNSHinfo, parsed.answers[0])
assert answer.cpu == 'cpu'
assert answer.os == 'os'
generated = r.DNSOutgoing(0)
generated.add_additional_answer(DNSHinfo('irrelevant', const._TYPE_HINFO, 0, 0, 'cpu', 'x' * 257))
self.assertRaises(r.NamePartTooLongException, generated.packets)
def test_many_questions(self):
"""Test many questions get seperated into multiple packets."""
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
questions = []
for i in range(100):
question = r.DNSQuestion(f"testname{i}.local.", const._TYPE_SRV, const._CLASS_IN)
generated.add_question(question)
questions.append(question)
assert len(generated.questions) == 100
packets = generated.packets()
assert len(packets) == 2
assert len(packets[0]) < const._MAX_MSG_TYPICAL
assert len(packets[1]) < const._MAX_MSG_TYPICAL
parsed1 = r.DNSIncoming(packets[0])
assert len(parsed1.questions) == 85
parsed2 = r.DNSIncoming(packets[1])
assert len(parsed2.questions) == 15
def test_many_questions_with_many_known_answers(self):
"""Test many questions and known answers get seperated into multiple packets."""
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
questions = []
for _ in range(30):
question = r.DNSQuestion(f"_hap._tcp.local.", const._TYPE_PTR, const._CLASS_IN)
generated.add_question(question)
questions.append(question)
assert len(generated.questions) == 30
now = current_time_millis()
for _ in range(200):
known_answer = r.DNSPointer(
"myservice{i}_tcp._tcp.local.",
const._TYPE_PTR,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
'123.local.',
)
generated.add_answer_at_time(known_answer, now)
packets = generated.packets()
assert len(packets) == 3
assert len(packets[0]) <= const._MAX_MSG_TYPICAL
assert len(packets[1]) <= const._MAX_MSG_TYPICAL
assert len(packets[2]) <= const._MAX_MSG_TYPICAL
parsed1 = r.DNSIncoming(packets[0])
assert len(parsed1.questions) == 30
assert len(parsed1.answers) == 88
assert parsed1.truncated
parsed2 = r.DNSIncoming(packets[1])
assert len(parsed2.questions) == 0
assert len(parsed2.answers) == 101
assert parsed2.truncated
parsed3 = r.DNSIncoming(packets[2])
assert len(parsed3.questions) == 0
assert len(parsed3.answers) == 11
assert not parsed3.truncated
def test_massive_probe_packet_split(self):
"""Test probe with many authorative answers."""
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY | const._FLAGS_AA)
questions = []
for _ in range(30):
question = r.DNSQuestion(
f"_hap._tcp.local.", const._TYPE_PTR, const._CLASS_IN | const._CLASS_UNIQUE
)
generated.add_question(question)
questions.append(question)
assert len(generated.questions) == 30
now = current_time_millis()
for _ in range(200):
authorative_answer = r.DNSPointer(
"myservice{i}_tcp._tcp.local.",
const._TYPE_PTR,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
'123.local.',
)
generated.add_authorative_answer(authorative_answer)
packets = generated.packets()
assert len(packets) == 3
assert len(packets[0]) <= const._MAX_MSG_TYPICAL
assert len(packets[1]) <= const._MAX_MSG_TYPICAL
assert len(packets[2]) <= const._MAX_MSG_TYPICAL
parsed1 = r.DNSIncoming(packets[0])
assert parsed1.questions[0].unicast is True
assert len(parsed1.questions) == 30
assert parsed1.num_authorities == 88
assert parsed1.truncated
parsed2 = r.DNSIncoming(packets[1])
assert len(parsed2.questions) == 0
assert parsed2.num_authorities == 101
assert parsed2.truncated
parsed3 = r.DNSIncoming(packets[2])
assert len(parsed3.questions) == 0
assert parsed3.num_authorities == 11
assert not parsed3.truncated
def test_only_one_answer_can_by_large(self):
"""Test that only the first answer in each packet can be large.
https://datatracker.ietf.org/doc/html/rfc6762#section-17
"""
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
query = r.DNSIncoming(r.DNSOutgoing(const._FLAGS_QR_QUERY).packets()[0])
for i in range(3):
generated.add_answer(
query,
r.DNSText(
"zoom._hap._tcp.local.",
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
1200,
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==' * 100,
),
)
generated.add_answer(
query,
r.DNSService(
"testname1.local.",
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
0,
0,
80,
"foo.local.",
),
)
assert len(generated.answers) == 4
packets = generated.packets()
assert len(packets) == 4
assert len(packets[0]) <= const._MAX_MSG_ABSOLUTE
assert len(packets[0]) > const._MAX_MSG_TYPICAL
assert len(packets[1]) <= const._MAX_MSG_ABSOLUTE
assert len(packets[1]) > const._MAX_MSG_TYPICAL
assert len(packets[2]) <= const._MAX_MSG_ABSOLUTE
assert len(packets[2]) > const._MAX_MSG_TYPICAL
assert len(packets[3]) <= const._MAX_MSG_TYPICAL
for packet in packets:
parsed = r.DNSIncoming(packet)
assert len(parsed.answers) == 1
def test_questions_do_not_end_up_every_packet(self):
"""Test that questions are not sent again when multiple packets are needed.
https://datatracker.ietf.org/doc/html/rfc6762#section-7.2
Sometimes a Multicast DNS querier will already have too many answers
to fit in the Known-Answer Section of its query packets.... It MUST
immediately follow the packet with another query packet containing no
questions and as many more Known-Answer records as will fit.
"""
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
for i in range(35):
question = r.DNSQuestion(f"testname{i}.local.", const._TYPE_SRV, const._CLASS_IN)
generated.add_question(question)
answer = r.DNSService(
f"testname{i}.local.",
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
0,
0,
80,
f"foo{i}.local.",
)
generated.add_answer_at_time(answer, 0)
assert len(generated.questions) == 35
assert len(generated.answers) == 35
packets = generated.packets()
assert len(packets) == 2
assert len(packets[0]) <= const._MAX_MSG_TYPICAL
assert len(packets[1]) <= const._MAX_MSG_TYPICAL
parsed1 = r.DNSIncoming(packets[0])
assert len(parsed1.questions) == 35
assert len(parsed1.answers) == 33
parsed2 = r.DNSIncoming(packets[1])
assert len(parsed2.questions) == 0
assert len(parsed2.answers) == 2
class PacketForm(unittest.TestCase):
def test_transaction_id(self):
"""ID must be zero in a DNS-SD packet"""
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
bytes = generated.packets()[0]
id = bytes[0] << 8 | bytes[1]
assert id == 0
def test_setting_id(self):
"""Test setting id in the constructor"""
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY, id_=4444)
assert generated.id == 4444
def test_query_header_bits(self):
generated = r.DNSOutgoing(const._FLAGS_QR_QUERY)
bytes = generated.packets()[0]
flags = bytes[2] << 8 | bytes[3]
assert flags == 0x0
def test_response_header_bits(self):
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
bytes = generated.packets()[0]
flags = bytes[2] << 8 | bytes[3]
assert flags == 0x8000
def test_numbers(self):
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
bytes = generated.packets()[0]
(num_questions, num_answers, num_authorities, num_additionals) = struct.unpack('!4H', bytes[4:12])
assert num_questions == 0
assert num_answers == 0
assert num_authorities == 0
assert num_additionals == 0
def test_numbers_questions(self):
generated = r.DNSOutgoing(const._FLAGS_QR_RESPONSE)
question = r.DNSQuestion("testname.local.", const._TYPE_SRV, const._CLASS_IN)
for i in range(10):
generated.add_question(question)
bytes = generated.packets()[0]
(num_questions, num_answers, num_authorities, num_additionals) = struct.unpack('!4H', bytes[4:12])
assert num_questions == 10
assert num_answers == 0
assert num_authorities == 0
assert num_additionals == 0
class TestDnsIncoming(unittest.TestCase):
def test_incoming_exception_handling(self):
generated = r.DNSOutgoing(0)
packet = generated.packets()[0]
packet = packet[:8] + b'deadbeef' + packet[8:]
parsed = r.DNSIncoming(packet)
parsed = r.DNSIncoming(packet)
assert parsed.valid is False
def test_incoming_unknown_type(self):
generated = r.DNSOutgoing(0)
answer = r.DNSAddress('a', const._TYPE_SOA, const._CLASS_IN, 1, b'a')
generated.add_additional_answer(answer)
packet = generated.packets()[0]
parsed = r.DNSIncoming(packet)
assert len(parsed.answers) == 0
assert parsed.is_query() != parsed.is_response()
def test_incoming_circular_reference(self):
assert not r.DNSIncoming(
bytes.fromhex(
'01005e0000fb542a1bf0577608004500006897934000ff11d81bc0a86a31e00000fb'
'14e914e90054f9b2000084000000000100000000095f7365727669636573075f646e'
'732d7364045f756470056c6f63616c00000c0001000011940018105f73706f746966'
'792d636f6e6e656374045f746370c023'
)
).valid
@unittest.skipIf(not has_working_ipv6(), 'Requires IPv6')
@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')
def test_incoming_ipv6(self):
addr = "2606:2800:220:1:248:1893:25c8:1946" # example.com
packed = socket.inet_pton(socket.AF_INET6, addr)
generated = r.DNSOutgoing(0)
answer = r.DNSAddress('domain', const._TYPE_AAAA, const._CLASS_IN | const._CLASS_UNIQUE, 1, packed)
generated.add_additional_answer(answer)
packet = generated.packets()[0]
parsed = r.DNSIncoming(packet)
record = parsed.answers[0]
assert isinstance(record, r.DNSAddress)
assert record.address == packed
def test_dns_compression_rollback_for_corruption():
"""Verify rolling back does not lead to dns compression corruption."""
out = r.DNSOutgoing(const._FLAGS_QR_RESPONSE | const._FLAGS_AA)
address = socket.inet_pton(socket.AF_INET, "192.168.208.5")
additionals = [
{
"name": "HASS Bridge ZJWH FF5137._hap._tcp.local.",
"address": address,
"port": 51832,
"text": b"\x13md=HASS Bridge"
b" ZJWH\x06pv=1.0\x14id=01:6B:30:FF:51:37\x05c#=12\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=L0m/aQ==",
},
{
"name": "HASS Bridge 3K9A C2582A._hap._tcp.local.",
"address": address,
"port": 51834,
"text": b"\x13md=HASS Bridge"
b" 3K9A\x06pv=1.0\x14id=E2:AA:5B:C2:58:2A\x05c#=12\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=b2CnzQ==",
},
{
"name": "Master Bed TV CEDB27._hap._tcp.local.",
"address": address,
"port": 51830,
"text": b"\x10md=Master Bed"
b" TV\x06pv=1.0\x14id=9E:B7:44:CE:DB:27\x05c#=18\x04s#=1\x04ff=0\x05"
b"ci=31\x04sf=0\x0bsh=CVj1kw==",
},
{
"name": "Living Room TV 921B77._hap._tcp.local.",
"address": address,
"port": 51833,
"text": b"\x11md=Living Room"
b" TV\x06pv=1.0\x14id=11:61:E7:92:1B:77\x05c#=17\x04s#=1\x04ff=0\x05"
b"ci=31\x04sf=0\x0bsh=qU77SQ==",
},
{
"name": "HASS Bridge ZC8X FF413D._hap._tcp.local.",
"address": address,
"port": 51829,
"text": b"\x13md=HASS Bridge"
b" ZC8X\x06pv=1.0\x14id=96:14:45:FF:41:3D\x05c#=12\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=b0QZlg==",
},
{
"name": "HASS Bridge WLTF 4BE61F._hap._tcp.local.",
"address": address,
"port": 51837,
"text": b"\x13md=HASS Bridge"
b" WLTF\x06pv=1.0\x14id=E0:E7:98:4B:E6:1F\x04c#=2\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=ahAISA==",
},
{
"name": "FrontdoorCamera 8941D1._hap._tcp.local.",
"address": address,
"port": 54898,
"text": b"\x12md=FrontdoorCamera\x06pv=1.0\x14id=9F:B7:DC:89:41:D1\x04c#=2\x04"
b"s#=1\x04ff=0\x04ci=2\x04sf=0\x0bsh=0+MXmA==",
},
{
"name": "HASS Bridge W9DN 5B5CC5._hap._tcp.local.",
"address": address,
"port": 51836,
"text": b"\x13md=HASS Bridge"
b" W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5\x05c#=12\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=6fLM5A==",
},
{
"name": "HASS Bridge Y9OO EFF0A7._hap._tcp.local.",
"address": address,
"port": 51838,
"text": b"\x13md=HASS Bridge"
b" Y9OO\x06pv=1.0\x14id=D3:FE:98:EF:F0:A7\x04c#=2\x04s#=1\x04ff=0\x04"
b"ci=2\x04sf=0\x0bsh=u3bdfw==",
},
{
"name": "Snooze Room TV 6B89B0._hap._tcp.local.",
"address": address,
"port": 51835,
"text": b"\x11md=Snooze Room"
b" TV\x06pv=1.0\x14id=5F:D5:70:6B:89:B0\x05c#=17\x04s#=1\x04ff=0\x05"
b"ci=31\x04sf=0\x0bsh=xNTqsg==",
},
{
"name": "AlexanderHomeAssistant 74651D._hap._tcp.local.",
"address": address,
"port": 54811,
"text": b"\x19md=AlexanderHomeAssistant\x06pv=1.0\x14id=59:8A:0B:74:65:1D\x05"
b"c#=14\x04s#=1\x04ff=0\x04ci=2\x04sf=0\x0bsh=ccZLPA==",
},
{
"name": "HASS Bridge OS95 39C053._hap._tcp.local.",
"address": address,
"port": 51831,
"text": b"\x13md=HASS Bridge"
b" OS95\x06pv=1.0\x14id=7E:8C:E6:39:C0:53\x05c#=12\x04s#=1\x04ff=0\x04ci=2"
b"\x04sf=0\x0bsh=Xfe5LQ==",
},
]
out.add_answer_at_time(
DNSText(
"HASS Bridge W9DN 5B5CC5._hap._tcp.local.",
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
b'\x13md=HASS Bridge W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5\x05c#=12\x04s#=1'
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==',
),
0,
)
for record in additionals:
out.add_additional_answer(
r.DNSService(
record["name"], # type: ignore
const._TYPE_SRV,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
0,
0,
record["port"], # type: ignore
record["name"], # type: ignore
)
)
out.add_additional_answer(
r.DNSText(
record["name"], # type: ignore
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
record["text"], # type: ignore
)
)
out.add_additional_answer(
r.DNSAddress(
record["name"], # type: ignore
const._TYPE_A,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_HOST_TTL,
record["address"], # type: ignore
)
)
for packet in out.packets():
# Verify we can process the packets we created to
# ensure there is no corruption with the dns compression
incoming = r.DNSIncoming(packet)
assert incoming.valid is True
assert (
len(incoming.answers)
== incoming.num_answers + incoming.num_authorities + incoming.num_additionals
)
def test_tc_bit_in_query_packet():
"""Verify the TC bit is set when known answers exceed the packet size."""
out = r.DNSOutgoing(const._FLAGS_QR_QUERY | const._FLAGS_AA)
type_ = "_hap._tcp.local."
out.add_question(r.DNSQuestion(type_, const._TYPE_PTR, const._CLASS_IN))
for i in range(30):
out.add_answer_at_time(
DNSText(
("HASS Bridge W9DN %s._hap._tcp.local." % i),
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
b'\x13md=HASS Bridge W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5\x05c#=12\x04s#=1'
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==',
),
0,
)
packets = out.packets()
assert len(packets) == 3
first_packet = r.DNSIncoming(packets[0])
assert first_packet.truncated
assert first_packet.valid is True
second_packet = r.DNSIncoming(packets[1])
assert second_packet.truncated
assert second_packet.valid is True
third_packet = r.DNSIncoming(packets[2])
assert not third_packet.truncated
assert third_packet.valid is True
def test_tc_bit_not_set_in_answer_packet():
"""Verify the TC bit is not set when there are no questions and answers exceed the packet size."""
out = r.DNSOutgoing(const._FLAGS_QR_RESPONSE | const._FLAGS_AA)
for i in range(30):
out.add_answer_at_time(
DNSText(
("HASS Bridge W9DN %s._hap._tcp.local." % i),
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
b'\x13md=HASS Bridge W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5\x05c#=12\x04s#=1'
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==',
),
0,
)
packets = out.packets()
assert len(packets) == 3
first_packet = r.DNSIncoming(packets[0])
assert not first_packet.truncated
assert first_packet.valid is True
second_packet = r.DNSIncoming(packets[1])
assert not second_packet.truncated
assert second_packet.valid is True
third_packet = r.DNSIncoming(packets[2])
assert not third_packet.truncated
assert third_packet.valid is True
# 4003 15.973052 192.168.107.68 224.0.0.251 MDNS 76 Standard query 0xffc4 PTR _raop._tcp.local, "QM" question
def test_qm_packet_parser():
"""Test we can parse a query packet with the QM bit."""
qm_packet = (
b'\xff\xc4\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x05_raop\x04_tcp\x05local\x00\x00\x0c\x00\x01'
)
parsed = DNSIncoming(qm_packet)
assert parsed.questions[0].unicast is False
assert ",QM," in str(parsed.questions[0])
# 389951 1450.577370 192.168.107.111 224.0.0.251 MDNS 115 Standard query 0x0000 PTR _companion-link._tcp.local, "QU" question OPT
def test_qu_packet_parser():
"""Test we can parse a query packet with the QU bit."""
qu_packet = b'\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x01\x0f_companion-link\x04_tcp\x05local\x00\x00\x0c\x80\x01\x00\x00)\x05\xa0\x00\x00\x11\x94\x00\x12\x00\x04\x00\x0e\x00dz{\x8a6\x9czF\x84,\xcaQ\xff'
parsed = DNSIncoming(qu_packet)
assert parsed.questions[0].unicast is True
assert ",QU," in str(parsed.questions[0])
def test_parse_packet_with_nsec_record():
"""Test we can parse a packet with an NSEC record."""
nsec_packet = (
b"\x00\x00\x84\x00\x00\x00\x00\x01\x00\x00\x00\x03\x08_meshcop\x04_udp\x05local\x00\x00\x0c\x00"
b"\x01\x00\x00\x11\x94\x00\x0f\x0cMyHome54 (2)\xc0\x0c\xc0+\x00\x10\x80\x01\x00\x00\x11\x94\x00"
b")\x0bnn=MyHome54\x13xp=695034D148CC4784\x08tv=0.0.0\xc0+\x00!\x80\x01\x00\x00\x00x\x00\x15\x00"
b"\x00\x00\x00\xc0'\x0cMaster-Bed-2\xc0\x1a\xc0+\x00/\x80\x01\x00\x00\x11\x94\x00\t\xc0+\x00\x05"
b"\x00\x00\x80\x00@"
)
parsed = DNSIncoming(nsec_packet)
nsec_record = parsed.answers[3]
assert "nsec," in str(nsec_record)
assert nsec_record.rdtypes == [16, 33]
assert nsec_record.next_name == "MyHome54 (2)._meshcop._udp.local."
def test_records_same_packet_share_fate():
"""Test records in the same packet all have the same created time."""
out = r.DNSOutgoing(const._FLAGS_QR_QUERY | const._FLAGS_AA)
type_ = "_hap._tcp.local."
out.add_question(r.DNSQuestion(type_, const._TYPE_PTR, const._CLASS_IN))
for i in range(30):
out.add_answer_at_time(
DNSText(
("HASS Bridge W9DN %s._hap._tcp.local." % i),
const._TYPE_TXT,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
b'\x13md=HASS Bridge W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5\x05c#=12\x04s#=1'
b'\x04ff=0\x04ci=2\x04sf=0\x0bsh=6fLM5A==',
),
0,
)
for packet in out.packets():
dnsin = DNSIncoming(packet)
first_time = dnsin.answers[0].created
for answer in dnsin.answers:
assert answer.created == first_time
def test_dns_compression_invalid_skips_bad_name_compress_in_question():
"""Test our wire parser can skip bad compression in questions."""
packet = (
b'\x00\x00\x00\x00\x00\x04\x00\x00\x00\x07\x00\x00\x11homeassistant1128\x05l'
b'ocal\x00\x00\xff\x00\x014homeassistant1128 [534a4794e5ed41879ecf012252d3e02'
b'a]\x0c_workstation\x04_tcp\xc0\x1e\x00\xff\x00\x014homeassistant1127 [534a47'
b'94e5ed41879ecf012252d3e02a]\xc0^\x00\xff\x00\x014homeassistant1123 [534a479'
b'4e5ed41879ecf012252d3e02a]\xc0^\x00\xff\x00\x014homeassistant1118 [534a4794'
b'e5ed41879ecf012252d3e02a]\xc0^\x00\xff\x00\x01\xc0\x0c\x00\x01\x80'
b'\x01\x00\x00\x00x\x00\x04\xc0\xa8<\xc3\xc0v\x00\x10\x80\x01\x00\x00\x00'
b'x\x00\x01\x00\xc0v\x00!\x80\x01\x00\x00\x00x\x00\x1f\x00\x00\x00\x00'
b'\x00\x00\x11homeassistant1127\x05local\x00\xc0\xb1\x00\x10\x80'
b'\x01\x00\x00\x00x\x00\x01\x00\xc0\xb1\x00!\x80\x01\x00\x00\x00x\x00\x1f'
b'\x00\x00\x00\x00\x00\x00\x11homeassistant1123\x05local\x00\xc0)\x00\x10\x80'
b'\x01\x00\x00\x00x\x00\x01\x00\xc0)\x00!\x80\x01\x00\x00\x00x\x00\x1f'
b'\x00\x00\x00\x00\x00\x00\x11homeassistant1128\x05local\x00'
)
parsed = r.DNSIncoming(packet)
assert len(parsed.questions) == 4
def test_dns_compression_all_invalid(caplog):
"""Test our wire parser can skip all invalid data."""
packet = (
b'\x00\x00\x84\x00\x00\x00\x00\x01\x00\x00\x00\x00!roborock-vacuum-s5e_miio416'
b'112328\x00\x00/\x80\x01\x00\x00\x00x\x00\t\xc0P\x00\x05@\x00\x00\x00\x00'
)
parsed = r.DNSIncoming(packet, ("2.4.5.4", 5353))
assert len(parsed.questions) == 0
assert len(parsed.answers) == 0
assert " Unable to parse; skipping record" in caplog.text
def test_invalid_next_name_ignored():
"""Test our wire parser does not throw an an invalid next name.
The RFC states it should be ignored when used with mDNS.
"""
packet = (
b'\x00\x00\x00\x00\x00\x01\x00\x02\x00\x00\x00\x00\x07Android\x05local\x00\x00'
b'\xff\x00\x01\xc0\x0c\x00/\x00\x01\x00\x00\x00x\x00\x08\xc02\x00\x04@'
b'\x00\x00\x08\xc0\x0c\x00\x01\x00\x01\x00\x00\x00x\x00\x04\xc0\xa8X<'
)
parsed = r.DNSIncoming(packet)
assert len(parsed.questions) == 1
assert len(parsed.answers) == 2
def test_dns_compression_invalid_skips_record():
"""Test our wire parser can skip records we do not know how to parse."""
packet = (
b"\x00\x00\x84\x00\x00\x00\x00\x06\x00\x00\x00\x00\x04_hap\x04_tcp\x05local\x00\x00\x0c"
b"\x00\x01\x00\x00\x11\x94\x00\x16\x13eufy HomeBase2-2464\xc0\x0c\x04Eufy\xc0\x16\x00/"
b"\x80\x01\x00\x00\x00x\x00\x08\xc0\xa6\x00\x04@\x00\x00\x08\xc0'\x00/\x80\x01\x00\x00"
b"\x11\x94\x00\t\xc0'\x00\x05\x00\x00\x80\x00@\xc0=\x00\x01\x80\x01\x00\x00\x00x\x00\x04"
b"\xc0\xa8Dp\xc0'\x00!\x80\x01\x00\x00\x00x\x00\x08\x00\x00\x00\x00\xd1_\xc0=\xc0'\x00"
b"\x10\x80\x01\x00\x00\x11\x94\x00K\x04c#=1\x04ff=2\x14id=38:71:4F:6B:76:00\x08md=T8010"
b"\x06pv=1.1\x05s#=75\x04sf=1\x04ci=2\x0bsh=xaQk4g=="
)
parsed = r.DNSIncoming(packet)
answer = r.DNSNsec(
'eufy HomeBase2-2464._hap._tcp.local.',
const._TYPE_NSEC,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
'eufy HomeBase2-2464._hap._tcp.local.',
[const._TYPE_TXT, const._TYPE_SRV],
)
assert answer in parsed.answers
def test_dns_compression_points_forward():
"""Test our wire parser can unpack nsec records with compression."""
packet = (
b"\x00\x00\x84\x00\x00\x00\x00\x07\x00\x00\x00\x00\x0eTV Beneden (2)"
b"\x10_androidtvremote\x04_tcp\x05local\x00\x00\x10\x80\x01\x00\x00\x11"
b"\x94\x00\x15\x14bt=D8:13:99:AC:98:F1\xc0\x0c\x00/\x80\x01\x00\x00\x11"
b"\x94\x00\t\xc0\x0c\x00\x05\x00\x00\x80\x00@\tAndroid-3\xc01\x00/\x80"
b"\x01\x00\x00\x00x\x00\x08\xc0\x9c\x00\x04@\x00\x00\x08\xc0l\x00\x01\x80"
b"\x01\x00\x00\x00x\x00\x04\xc0\xa8X\x0f\xc0\x0c\x00!\x80\x01\x00\x00\x00"
b"x\x00\x08\x00\x00\x00\x00\x19B\xc0l\xc0\x1b\x00\x0c\x00\x01\x00\x00\x11"
b"\x94\x00\x02\xc0\x0c\t_services\x07_dns-sd\x04_udp\xc01\x00\x0c\x00\x01"
b"\x00\x00\x11\x94\x00\x02\xc0\x1b"
)
parsed = r.DNSIncoming(packet)
answer = r.DNSNsec(
'TV Beneden (2)._androidtvremote._tcp.local.',
const._TYPE_NSEC,
const._CLASS_IN | const._CLASS_UNIQUE,
const._DNS_OTHER_TTL,
'TV Beneden (2)._androidtvremote._tcp.local.',
[const._TYPE_TXT, const._TYPE_SRV],
)
assert answer in parsed.answers
def test_dns_compression_points_to_itself():
"""Test our wire parser does not loop forever when a compression pointer points to itself."""
packet = (
b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x06domain\x05local\x00\x00\x01"
b"\x80\x01\x00\x00\x00\x01\x00\x04\xc0\xa8\xd0\x05\xc0(\x00\x01\x80\x01\x00\x00\x00"
b"\x01\x00\x04\xc0\xa8\xd0\x06"
)
parsed = r.DNSIncoming(packet)
assert len(parsed.answers) == 1
def test_dns_compression_points_beyond_packet():
"""Test our wire parser does not fail when the compression pointer points beyond the packet."""
packet = (
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x06domain\x05local\x00\x00\x01'
b'\x80\x01\x00\x00\x00\x01\x00\x04\xc0\xa8\xd0\x05\xe7\x0f\x00\x01\x80\x01\x00\x00'
b'\x00\x01\x00\x04\xc0\xa8\xd0\x06'
)
parsed = r.DNSIncoming(packet)
assert len(parsed.answers) == 1
def test_dns_compression_generic_failure(caplog):
"""Test our wire parser does not loop forever when dns compression is corrupt."""
packet = (
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x06domain\x05local\x00\x00\x01'
b'\x80\x01\x00\x00\x00\x01\x00\x04\xc0\xa8\xd0\x05-\x0c\x00\x01\x80\x01\x00\x00'
b'\x00\x01\x00\x04\xc0\xa8\xd0\x06'
)
parsed = r.DNSIncoming(packet, ("1.2.3.4", 5353))
assert len(parsed.answers) == 1
assert "Received invalid packet from ('1.2.3.4', 5353)" in caplog.text
def test_label_length_attack():
"""Test our wire parser does not loop forever when the name exceeds 253 chars."""
packet = (
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x01d\x01d\x01d\x01d\x01d\x01d'
b'\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d'
b'\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d'
b'\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d'
b'\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d'
b'\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d'
b'\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d'
b'\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d'
b'\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x01d\x00\x00\x01\x80'
b'\x01\x00\x00\x00\x01\x00\x04\xc0\xa8\xd0\x05\xc0\x0c\x00\x01\x80\x01\x00\x00\x00'
b'\x01\x00\x04\xc0\xa8\xd0\x06'
)
parsed = r.DNSIncoming(packet)
assert len(parsed.answers) == 0
def test_label_compression_attack():
"""Test our wire parser does not loop forever when exceeding the maximum number of labels."""
packet = (
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x03atk\x00\x00\x01\x80'
b'\x01\x00\x00\x00\x01\x00\x04\xc0\xa8\xd0\x05\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03'
b'atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\x03atk\xc0'
b'\x0c\x00\x01\x80\x01\x00\x00\x00\x01\x00\x04\xc0\xa8\xd0\x06'
)
parsed = r.DNSIncoming(packet)
assert len(parsed.answers) == 1
def test_dns_compression_loop_attack():
"""Test our wire parser does not loop forever when dns compression is in a loop."""
packet = (
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07\x03atk\x03dns\x05loc'
b'al\xc0\x10\x00\x01\x80\x01\x00\x00\x00\x01\x00\x04\xc0\xa8\xd0\x05\x04a'
b'tk2\x04dns2\xc0\x14\x00\x01\x80\x01\x00\x00\x00\x01\x00\x04\xc0\xa8\xd0\x05'
b'\x04atk3\xc0\x10\x00\x01\x80\x01\x00\x00\x00\x01\x00\x04\xc0\xa8\xd0'
b'\x05\x04atk4\x04dns5\xc0\x14\x00\x01\x80\x01\x00\x00\x00\x01\x00\x04\xc0'
b'\xa8\xd0\x05\x04atk5\x04dns2\xc0^\x00\x01\x80\x01\x00\x00\x00\x01\x00'
b'\x04\xc0\xa8\xd0\x05\xc0s\x00\x01\x80\x01\x00\x00\x00\x01\x00'
b'\x04\xc0\xa8\xd0\x05\xc0s\x00\x01\x80\x01\x00\x00\x00\x01\x00'
b'\x04\xc0\xa8\xd0\x05'
)
parsed = r.DNSIncoming(packet)
assert len(parsed.answers) == 0
def test_txt_after_invalid_nsec_name_still_usable():
"""Test that we can see the txt record after the invalid nsec record."""
packet = (
b'\x00\x00\x84\x00\x00\x00\x00\x06\x00\x00\x00\x00\x06_sonos\x04_tcp\x05loc'
b'al\x00\x00\x0c\x00\x01\x00\x00\x11\x94\x00\x15\x12Sonos-542A1BC9220E'
b'\xc0\x0c\x12Sonos-542A1BC9220E\xc0\x18\x00/\x80\x01\x00\x00\x00x\x00'
b'\x08\xc1t\x00\x04@\x00\x00\x08\xc0)\x00/\x80\x01\x00\x00\x11\x94\x00'
b'\t\xc0)\x00\x05\x00\x00\x80\x00@\xc0)\x00!\x80\x01\x00\x00\x00x'
b'\x00\x08\x00\x00\x00\x00\x05\xa3\xc0>\xc0>\x00\x01\x80\x01\x00\x00\x00x'
b'\x00\x04\xc0\xa8\x02:\xc0)\x00\x10\x80\x01\x00\x00\x11\x94\x01*2info=/api'
b'/v1/players/RINCON_542A1BC9220E01400/info\x06vers=3\x10protovers=1.24.1\nbo'
b'otseq=11%hhid=Sonos_rYn9K9DLXJe0f3LP9747lbvFvh;mhhid=Sonos_rYn9K9DLXJe0f3LP9'
b'747lbvFvh.Q45RuMaeC07rfXh7OJGm<location=http://192.168.2.58:1400/xml/device_'
b'description.xml\x0csslport=1443\x0ehhsslport=1843\tvariant=2\x0emdnssequen'
b'ce=0'
)
parsed = r.DNSIncoming(packet)
# The NSEC record with the invalid name compression should be skipped
assert parsed.answers[4].text == (
b'2info=/api/v1/players/RINCON_542A1BC9220E01400/info\x06vers=3\x10protovers'
b'=1.24.1\nbootseq=11%hhid=Sonos_rYn9K9DLXJe0f3LP9747lbvFvh;mhhid=Sonos_rYn'
b'9K9DLXJe0f3LP9747lbvFvh.Q45RuMaeC07rfXh7OJGm<location=http://192.168.2.58:14'
b'00/xml/device_description.xml\x0csslport=1443\x0ehhsslport=1843\tvarian'
b't=2\x0emdnssequence=0'
)
assert len(parsed.answers) == 5
0707010000002E000081A4000000000000000000000001631651AD000024EE000000000000000000000000000000000000002E00000000python-zeroconf-0.39.1/tests/test_services.py#!/usr/bin/env python
""" Unit tests for zeroconf._services. """
import logging
import socket
import time
import os
import unittest
from threading import Event
from unittest.mock import patch
import pytest
import zeroconf as r
from zeroconf import Zeroconf
from zeroconf._services.info import ServiceInfo
from . import has_working_ipv6, _clear_cache
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
class ListenerTest(unittest.TestCase):
def test_integration_with_listener_class(self):
sub_service_added = Event()
service_added = Event()
service_removed = Event()
sub_service_updated = Event()
duplicate_service_added = Event()
subtype_name = "_printer"
type_ = "_http._tcp.local."
subtype = subtype_name + "._sub." + type_
name = "UPPERxxxyyyæøå"
registration_name = f"{name}.{subtype}"
class MyListener(r.ServiceListener):
def add_service(self, zeroconf, type, name):
zeroconf.get_service_info(type, name)
service_added.set()
def remove_service(self, zeroconf, type, name):
service_removed.set()
def update_service(self, zeroconf, type, name):
pass
class DuplicateListener(r.ServiceListener):
def add_service(self, zeroconf, type, name):
duplicate_service_added.set()
def remove_service(self, zeroconf, type, name):
pass
def update_service(self, zeroconf, type, name):
pass
class MySubListener(r.ServiceListener):
def add_service(self, zeroconf, type, name):
sub_service_added.set()
pass
def remove_service(self, zeroconf, type, name):
pass
def update_service(self, zeroconf, type, name):
sub_service_updated.set()
listener = MyListener()
zeroconf_browser = Zeroconf(interfaces=['127.0.0.1'])
zeroconf_browser.add_service_listener(type_, listener)
properties = dict(
prop_none=None,
prop_string=b'a_prop',
prop_float=1.0,
prop_blank=b'a blanked string',
prop_true=1,
prop_false=0,
)
zeroconf_registrar = Zeroconf(interfaces=['127.0.0.1'])
desc = {'path': '/~paulsm/'} # type: Dict
desc.update(properties)
addresses = [socket.inet_aton("10.0.1.2")]
if has_working_ipv6() and not os.environ.get('SKIP_IPV6'):
addresses.append(socket.inet_pton(socket.AF_INET6, "6001:db8::1"))
addresses.append(socket.inet_pton(socket.AF_INET6, "2001:db8::1"))
info_service = ServiceInfo(
subtype, registration_name, port=80, properties=desc, server="ash-2.local.", addresses=addresses
)
zeroconf_registrar.register_service(info_service)
with patch.object(
zeroconf_registrar.engine.protocols[0], "suppress_duplicate_packet", return_value=False
), patch.object(
zeroconf_registrar.engine.protocols[1], "suppress_duplicate_packet", return_value=False
):
try:
service_added.wait(1)
assert service_added.is_set()
# short pause to allow multicast timers to expire
time.sleep(3)
zeroconf_browser.add_service_listener(type_, DuplicateListener())
duplicate_service_added.wait(
1
) # Ensure a listener for the same type calls back right away from cache
# clear the answer cache to force query
_clear_cache(zeroconf_browser)
cached_info = ServiceInfo(type_, registration_name)
cached_info.load_from_cache(zeroconf_browser)
assert cached_info.properties == {}
# get service info without answer cache
info = zeroconf_browser.get_service_info(type_, registration_name)
assert info is not None
assert info.properties[b'prop_none'] is None
assert info.properties[b'prop_string'] == properties['prop_string']
assert info.properties[b'prop_float'] == b'1.0'
assert info.properties[b'prop_blank'] == properties['prop_blank']
assert info.properties[b'prop_true'] == b'1'
assert info.properties[b'prop_false'] == b'0'
assert info.addresses == addresses[:1] # no V6 by default
assert set(info.addresses_by_version(r.IPVersion.All)) == set(addresses)
cached_info = ServiceInfo(type_, registration_name)
cached_info.load_from_cache(zeroconf_browser)
assert cached_info.properties is not None
# Populate the cache
zeroconf_browser.get_service_info(subtype, registration_name)
# get service info with only the cache
cached_info = ServiceInfo(subtype, registration_name)
cached_info.load_from_cache(zeroconf_browser)
assert cached_info.properties is not None
assert cached_info.properties[b'prop_float'] == b'1.0'
# get service info with only the cache with the lowercase name
cached_info = ServiceInfo(subtype, registration_name.lower())
cached_info.load_from_cache(zeroconf_browser)
# Ensure uppercase output is preserved
assert cached_info.name == registration_name
assert cached_info.key == registration_name.lower()
assert cached_info.properties is not None
assert cached_info.properties[b'prop_float'] == b'1.0'
info = zeroconf_browser.get_service_info(subtype, registration_name)
assert info is not None
assert info.properties is not None
assert info.properties[b'prop_none'] is None
cached_info = ServiceInfo(subtype, registration_name.lower())
cached_info.load_from_cache(zeroconf_browser)
assert cached_info.properties is not None
assert cached_info.properties[b'prop_none'] is None
# test TXT record update
sublistener = MySubListener()
zeroconf_browser.add_service_listener(subtype, sublistener)
properties['prop_blank'] = b'an updated string'
desc.update(properties)
info_service = ServiceInfo(
subtype,
registration_name,
80,
0,
0,
desc,
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
zeroconf_registrar.update_service(info_service)
sub_service_added.wait(1) # we cleared the cache above
assert sub_service_added.is_set()
info = zeroconf_browser.get_service_info(type_, registration_name)
assert info is not None
assert info.properties[b'prop_blank'] == properties['prop_blank']
cached_info = ServiceInfo(subtype, registration_name)
cached_info.load_from_cache(zeroconf_browser)
assert cached_info.properties is not None
assert cached_info.properties[b'prop_blank'] == properties['prop_blank']
zeroconf_registrar.unregister_service(info_service)
service_removed.wait(1)
assert service_removed.is_set()
finally:
zeroconf_registrar.close()
zeroconf_browser.remove_service_listener(listener)
zeroconf_browser.close()
def test_servicelisteners_raise_not_implemented():
"""Verify service listeners raise when one of the methods is not implemented."""
class MyPartialListener(r.ServiceListener):
"""A listener that does not implement anything."""
zc = r.Zeroconf(interfaces=['127.0.0.1'])
with pytest.raises(NotImplementedError):
MyPartialListener().add_service(
zc, "_tivo-videostream._tcp.local.", "Tivo1._tivo-videostream._tcp.local."
)
with pytest.raises(NotImplementedError):
MyPartialListener().remove_service(
zc, "_tivo-videostream._tcp.local.", "Tivo1._tivo-videostream._tcp.local."
)
with pytest.raises(NotImplementedError):
MyPartialListener().update_service(
zc, "_tivo-videostream._tcp.local.", "Tivo1._tivo-videostream._tcp.local."
)
zc.close()
def test_signal_registration_interface():
"""Test adding and removing from the SignalRegistrationInterface."""
interface = r.SignalRegistrationInterface([])
def dummy():
pass
interface.register_handler(dummy)
interface.unregister_handler(dummy)
with pytest.raises(ValueError):
interface.unregister_handler(dummy)
0707010000002F000081A4000000000000000000000001631651AD000008F1000000000000000000000000000000000000002D00000000python-zeroconf-0.39.1/tests/test_updates.py#!/usr/bin/env python
""" Unit tests for zeroconf._updates. """
import logging
import socket
import time
from threading import Event
import pytest
import zeroconf as r
from zeroconf import const
from zeroconf import Zeroconf
from zeroconf._services.browser import ServiceBrowser
from zeroconf._services.info import ServiceInfo
log = logging.getLogger('zeroconf')
original_logging_level = logging.NOTSET
def setup_module():
global original_logging_level
original_logging_level = log.level
log.setLevel(logging.DEBUG)
def teardown_module():
if original_logging_level != logging.NOTSET:
log.setLevel(original_logging_level)
def test_legacy_record_update_listener():
"""Test a RecordUpdateListener that does not implement update_records."""
# instantiate a zeroconf instance
zc = Zeroconf(interfaces=['127.0.0.1'])
with pytest.raises(RuntimeError):
r.RecordUpdateListener().update_record(
zc, 0, r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL)
)
updates = []
class LegacyRecordUpdateListener(r.RecordUpdateListener):
"""A RecordUpdateListener that does not implement update_records."""
def update_record(self, zc: 'Zeroconf', now: float, record: r.DNSRecord) -> None:
nonlocal updates
updates.append(record)
listener = LegacyRecordUpdateListener()
zc.add_listener(listener, None)
# dummy service callback
def on_service_state_change(zeroconf, service_type, state_change, name):
pass
# start a browser
type_ = "_homeassistant._tcp.local."
name = "MyTestHome"
browser = ServiceBrowser(zc, type_, [on_service_state_change])
info_service = ServiceInfo(
type_,
f'{name}.{type_}',
80,
0,
0,
{'path': '/~paulsm/'},
"ash-2.local.",
addresses=[socket.inet_aton("10.0.1.2")],
)
zc.register_service(info_service)
time.sleep(0.001)
browser.cancel()
assert len(updates)
assert len([isinstance(update, r.DNSPointer) and update.name == type_ for update in updates]) >= 1
zc.remove_listener(listener)
# Removing a second time should not throw
zc.remove_listener(listener)
zc.close()
07070100000030000041ED000000000000000000000002631651AD00000000000000000000000000000000000000000000002300000000python-zeroconf-0.39.1/tests/utils07070100000031000081A4000000000000000000000001631651AD000003CB000000000000000000000000000000000000002F00000000python-zeroconf-0.39.1/tests/utils/__init__.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
07070100000032000081A4000000000000000000000001631651AD0000132C000000000000000000000000000000000000003300000000python-zeroconf-0.39.1/tests/utils/test_asyncio.py#!/usr/bin/env python
"""Unit tests for zeroconf._utils.asyncio."""
import asyncio
import concurrent.futures
import contextlib
import threading
import time
from unittest.mock import patch
import pytest
from zeroconf import EventLoopBlocked
from zeroconf._core import _CLOSE_TIMEOUT
from zeroconf._utils import asyncio as aioutils
from zeroconf.const import _LOADED_SYSTEM_TIMEOUT
@pytest.mark.asyncio
async def test_async_get_all_tasks() -> None:
"""Test we can get all tasks in the event loop.
We make sure we handle RuntimeError here as
this is not thread safe under PyPy
"""
await aioutils._async_get_all_tasks(aioutils.get_running_loop())
if not hasattr(asyncio, 'all_tasks'):
return
with patch("zeroconf._utils.asyncio.asyncio.all_tasks", side_effect=RuntimeError):
await aioutils._async_get_all_tasks(aioutils.get_running_loop())
@pytest.mark.asyncio
async def test_get_running_loop_from_async() -> None:
"""Test we can get the event loop."""
assert isinstance(aioutils.get_running_loop(), asyncio.AbstractEventLoop)
def test_get_running_loop_no_loop() -> None:
"""Test we get None when there is no loop running."""
assert aioutils.get_running_loop() is None
@pytest.mark.asyncio
async def test_wait_event_or_timeout_times_out() -> None:
"""Test wait_event_or_timeout will timeout."""
test_event = asyncio.Event()
await aioutils.wait_event_or_timeout(test_event, 0.1)
task = asyncio.ensure_future(test_event.wait())
await asyncio.sleep(0.1)
async def _async_wait_or_timeout():
await aioutils.wait_event_or_timeout(test_event, 0.1)
# Test high lock contention
await asyncio.gather(*[_async_wait_or_timeout() for _ in range(100)])
task.cancel()
with contextlib.suppress(asyncio.CancelledError):
await task
def test_shutdown_loop() -> None:
"""Test shutting down an event loop."""
loop = None
loop_thread_ready = threading.Event()
runcoro_thread_ready = threading.Event()
def _run_loop() -> None:
nonlocal loop
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
loop_thread_ready.set()
loop.run_forever()
loop_thread = threading.Thread(target=_run_loop, daemon=True)
loop_thread.start()
loop_thread_ready.wait()
async def _still_running():
await asyncio.sleep(5)
def _run_coro() -> None:
runcoro_thread_ready.set()
with contextlib.suppress(concurrent.futures.TimeoutError):
asyncio.run_coroutine_threadsafe(_still_running(), loop).result(1)
runcoro_thread = threading.Thread(target=_run_coro, daemon=True)
runcoro_thread.start()
runcoro_thread_ready.wait()
time.sleep(0.1)
aioutils.shutdown_loop(loop)
for _ in range(5):
if not loop.is_running():
break
time.sleep(0.05)
assert loop.is_running() is False
runcoro_thread.join()
def test_cumulative_timeouts_less_than_close_plus_buffer():
"""Test that the combined async timeouts are shorter than the close timeout with the buffer.
We want to make sure that the close timeout is the one that gets
raised if something goes wrong.
"""
assert (
aioutils._TASK_AWAIT_TIMEOUT + aioutils._GET_ALL_TASKS_TIMEOUT + aioutils._WAIT_FOR_LOOP_TASKS_TIMEOUT
) < 1 + _CLOSE_TIMEOUT + _LOADED_SYSTEM_TIMEOUT
@pytest.mark.asyncio
async def test_run_coro_with_timeout() -> None:
"""Test running a coroutine with a timeout raises EventLoopBlocked."""
loop = asyncio.get_event_loop()
task = None
async def _saved_sleep_task():
nonlocal task
task = asyncio.create_task(asyncio.sleep(0.2))
await task
def _run_in_loop():
aioutils.run_coro_with_timeout(_saved_sleep_task(), loop, 0.1)
with pytest.raises(EventLoopBlocked), patch.object(aioutils, "_LOADED_SYSTEM_TIMEOUT", 0.0):
await loop.run_in_executor(None, _run_in_loop)
# ensure the thread is shutdown
task.cancel()
await asyncio.sleep(0)
await _shutdown_default_executor(loop)
# Remove this when we drop support for older python versions
# since we can use loop.shutdown_default_executor() in 3.9+
async def _shutdown_default_executor(loop: asyncio.AbstractEventLoop) -> None:
"""Backport of cpython 3.9 schedule the shutdown of the default executor."""
future = loop.create_future()
def _do_shutdown() -> None:
try:
loop._default_executor.shutdown(wait=True) # type: ignore # pylint: disable=protected-access
loop.call_soon_threadsafe(future.set_result, None)
except Exception as ex: # pylint: disable=broad-except
loop.call_soon_threadsafe(future.set_exception, ex)
thread = threading.Thread(target=_do_shutdown)
thread.start()
try:
await future
finally:
thread.join()
07070100000033000081A4000000000000000000000001631651AD000007FD000000000000000000000000000000000000003000000000python-zeroconf-0.39.1/tests/utils/test_name.py#!/usr/bin/env python
"""Unit tests for zeroconf._utils.name."""
import pytest
from zeroconf._utils import name as nameutils
from zeroconf import BadTypeInNameException
def test_service_type_name_overlong_type():
"""Test overlong service_type_name type."""
with pytest.raises(BadTypeInNameException):
nameutils.service_type_name("Tivo1._tivo-videostream._tcp.local.")
nameutils.service_type_name("Tivo1._tivo-videostream._tcp.local.", strict=False)
def test_service_type_name_overlong_full_name():
"""Test overlong service_type_name full name."""
long_name = "Tivo1Tivo1Tivo1Tivo1Tivo1Tivo1Tivo1Tivo1" * 100
with pytest.raises(BadTypeInNameException):
nameutils.service_type_name(f"{long_name}._tivo-videostream._tcp.local.")
with pytest.raises(BadTypeInNameException):
nameutils.service_type_name(f"{long_name}._tivo-videostream._tcp.local.", strict=False)
def test_possible_types():
"""Test possible types from name."""
assert nameutils.possible_types('.') == set()
assert nameutils.possible_types('local.') == set()
assert nameutils.possible_types('_tcp.local.') == set()
assert nameutils.possible_types('_test-srvc-type._tcp.local.') == {'_test-srvc-type._tcp.local.'}
assert nameutils.possible_types('_any._tcp.local.') == {'_any._tcp.local.'}
assert nameutils.possible_types('.._x._tcp.local.') == {'_x._tcp.local.'}
assert nameutils.possible_types('x.y._http._tcp.local.') == {'_http._tcp.local.'}
assert nameutils.possible_types('1.2.3._mqtt._tcp.local.') == {'_mqtt._tcp.local.'}
assert nameutils.possible_types('x.sub._http._tcp.local.') == {'_http._tcp.local.'}
assert nameutils.possible_types('6d86f882b90facee9170ad3439d72a4d6ee9f511._zget._http._tcp.local.') == {
'_http._tcp.local.',
'_zget._http._tcp.local.',
}
assert nameutils.possible_types('my._printer._sub._http._tcp.local.') == {
'_http._tcp.local.',
'_sub._http._tcp.local.',
'_printer._sub._http._tcp.local.',
}
07070100000034000081A4000000000000000000000001631651AD00002447000000000000000000000000000000000000002F00000000python-zeroconf-0.39.1/tests/utils/test_net.py#!/usr/bin/env python
"""Unit tests for zeroconf._utils.net."""
from unittest.mock import MagicMock, Mock, patch
import errno
import ifaddr
import pytest
import socket
import unittest
from zeroconf._utils import net as netutils
import zeroconf as r
def _generate_mock_adapters():
mock_lo0 = Mock(spec=ifaddr.Adapter)
mock_lo0.nice_name = "lo0"
mock_lo0.ips = [ifaddr.IP("127.0.0.1", 8, "lo0")]
mock_lo0.index = 0
mock_eth0 = Mock(spec=ifaddr.Adapter)
mock_eth0.nice_name = "eth0"
mock_eth0.ips = [ifaddr.IP(("2001:db8::", 1, 1), 8, "eth0")]
mock_eth0.index = 1
mock_eth1 = Mock(spec=ifaddr.Adapter)
mock_eth1.nice_name = "eth1"
mock_eth1.ips = [ifaddr.IP("192.168.1.5", 23, "eth1")]
mock_eth1.index = 2
mock_vtun0 = Mock(spec=ifaddr.Adapter)
mock_vtun0.nice_name = "vtun0"
mock_vtun0.ips = [ifaddr.IP("169.254.3.2", 16, "vtun0")]
mock_vtun0.index = 3
return [mock_eth0, mock_lo0, mock_eth1, mock_vtun0]
def test_ip6_to_address_and_index():
"""Test we can extract from mocked adapters."""
adapters = _generate_mock_adapters()
assert netutils.ip6_to_address_and_index(adapters, "2001:db8::") == (('2001:db8::', 1, 1), 1)
assert netutils.ip6_to_address_and_index(adapters, "2001:db8::%1") == (('2001:db8::', 1, 1), 1)
with pytest.raises(RuntimeError):
assert netutils.ip6_to_address_and_index(adapters, "2005:db8::")
def test_interface_index_to_ip6_address():
"""Test we can extract from mocked adapters."""
adapters = _generate_mock_adapters()
assert netutils.interface_index_to_ip6_address(adapters, 1) == ('2001:db8::', 1, 1)
# call with invalid adapter
with pytest.raises(RuntimeError):
assert netutils.interface_index_to_ip6_address(adapters, 6)
# call with adapter that has ipv4 address only
with pytest.raises(RuntimeError):
assert netutils.interface_index_to_ip6_address(adapters, 2)
def test_ip6_addresses_to_indexes():
"""Test we can extract from mocked adapters."""
interfaces = [1]
with patch("zeroconf._utils.net.ifaddr.get_adapters", return_value=_generate_mock_adapters()):
assert netutils.ip6_addresses_to_indexes(interfaces) == [(('2001:db8::', 1, 1), 1)]
interfaces = ['2001:db8::']
with patch("zeroconf._utils.net.ifaddr.get_adapters", return_value=_generate_mock_adapters()):
assert netutils.ip6_addresses_to_indexes(interfaces) == [(('2001:db8::', 1, 1), 1)]
def test_normalize_interface_choice_errors():
"""Test we generate exception on invalid input."""
with patch("zeroconf._utils.net.get_all_addresses", return_value=[]), patch(
"zeroconf._utils.net.get_all_addresses_v6", return_value=[]
), pytest.raises(RuntimeError):
netutils.normalize_interface_choice(r.InterfaceChoice.All)
with pytest.raises(TypeError):
netutils.normalize_interface_choice("1.2.3.4")
@pytest.mark.parametrize(
"errno,expected_result",
[(errno.EADDRINUSE, False), (errno.EADDRNOTAVAIL, False), (errno.EINVAL, False), (0, True)],
)
def test_add_multicast_member_socket_errors(errno, expected_result):
"""Test we handle socket errors when adding multicast members."""
if errno:
setsockopt_mock = unittest.mock.Mock(side_effect=OSError(errno, f"Error: {errno}"))
else:
setsockopt_mock = unittest.mock.Mock()
fileno_mock = unittest.mock.PropertyMock(return_value=10)
socket_mock = unittest.mock.Mock(setsockopt=setsockopt_mock, fileno=fileno_mock)
assert r.add_multicast_member(socket_mock, "0.0.0.0") == expected_result
def test_autodetect_ip_version():
"""Tests for auto detecting IPVersion based on interface ips."""
assert r.autodetect_ip_version(["1.3.4.5"]) is r.IPVersion.V4Only
assert r.autodetect_ip_version([]) is r.IPVersion.V4Only
assert r.autodetect_ip_version(["::1", "1.2.3.4"]) is r.IPVersion.All
assert r.autodetect_ip_version(["::1"]) is r.IPVersion.V6Only
def test_disable_ipv6_only_or_raise():
"""Test that IPV6_V6ONLY failing logs a nice error message and still raises."""
errors_logged = []
def _log_error(*args):
nonlocal errors_logged
errors_logged.append(args)
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
with pytest.raises(OSError), patch.object(netutils.log, "error", _log_error), patch(
"socket.socket.setsockopt", side_effect=OSError
):
netutils.disable_ipv6_only_or_raise(sock)
assert (
errors_logged[0][0]
== 'Support for dual V4-V6 sockets is not present, use IPVersion.V4 or IPVersion.V6'
)
@pytest.mark.skipif(not hasattr(socket, 'SO_REUSEPORT'), reason="System does not have SO_REUSEPORT")
def test_set_so_reuseport_if_available_is_present():
"""Test that setting socket.SO_REUSEPORT only OSError errno.ENOPROTOOPT is trapped."""
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
with pytest.raises(OSError), patch("socket.socket.setsockopt", side_effect=OSError):
netutils.set_so_reuseport_if_available(sock)
with patch("socket.socket.setsockopt", side_effect=OSError(errno.ENOPROTOOPT, None)):
netutils.set_so_reuseport_if_available(sock)
@pytest.mark.skipif(hasattr(socket, 'SO_REUSEPORT'), reason="System has SO_REUSEPORT")
def test_set_so_reuseport_if_available_not_present():
"""Test that we do not try to set SO_REUSEPORT if it is not present."""
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
with patch("socket.socket.setsockopt", side_effect=OSError):
netutils.set_so_reuseport_if_available(sock)
def test_set_mdns_port_socket_options_for_ip_version():
"""Test OSError with errno with EINVAL and bind address '' from setsockopt IP_MULTICAST_TTL does not raise."""
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
# Should raise on EPERM always
with pytest.raises(OSError), patch("socket.socket.setsockopt", side_effect=OSError(errno.EPERM, None)):
netutils.set_mdns_port_socket_options_for_ip_version(sock, ('',), r.IPVersion.V4Only)
# Should raise on EINVAL always when bind address is not ''
with pytest.raises(OSError), patch("socket.socket.setsockopt", side_effect=OSError(errno.EINVAL, None)):
netutils.set_mdns_port_socket_options_for_ip_version(sock, ('127.0.0.1',), r.IPVersion.V4Only)
# Should not raise on EINVAL when bind address is ''
with patch("socket.socket.setsockopt", side_effect=OSError(errno.EINVAL, None)):
netutils.set_mdns_port_socket_options_for_ip_version(sock, ('',), r.IPVersion.V4Only)
def test_add_multicast_member():
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
interface = '127.0.0.1'
# EPERM should always raise
with pytest.raises(OSError), patch("socket.socket.setsockopt", side_effect=OSError(errno.EPERM, None)):
netutils.add_multicast_member(sock, interface)
# EADDRINUSE should return False
with patch("socket.socket.setsockopt", side_effect=OSError(errno.EADDRINUSE, None)):
assert netutils.add_multicast_member(sock, interface) is False
# EADDRNOTAVAIL should return False
with patch("socket.socket.setsockopt", side_effect=OSError(errno.EADDRNOTAVAIL, None)):
assert netutils.add_multicast_member(sock, interface) is False
# EINVAL should return False
with patch("socket.socket.setsockopt", side_effect=OSError(errno.EINVAL, None)):
assert netutils.add_multicast_member(sock, interface) is False
# ENOPROTOOPT should return False
with patch("socket.socket.setsockopt", side_effect=OSError(errno.ENOPROTOOPT, None)):
assert netutils.add_multicast_member(sock, interface) is False
# ENODEV should raise for ipv4
with pytest.raises(OSError), patch("socket.socket.setsockopt", side_effect=OSError(errno.ENODEV, None)):
netutils.add_multicast_member(sock, interface) is False
# ENODEV should return False for ipv6
with patch("socket.socket.setsockopt", side_effect=OSError(errno.ENODEV, None)):
assert netutils.add_multicast_member(sock, ('2001:db8::', 1, 1)) is False
# No IPv6 support should return False for IPv6
with patch("socket.inet_pton", side_effect=OSError()):
assert netutils.add_multicast_member(sock, ('2001:db8::', 1, 1)) is False
# No error should return True
with patch("socket.socket.setsockopt"):
assert netutils.add_multicast_member(sock, interface) is True
def test_bind_raises_skips_address():
"""Test bind failing in new_socket returns None on EADDRNOTAVAIL."""
err = errno.EADDRNOTAVAIL
def _mock_socket(*args, **kwargs):
sock = MagicMock()
sock.bind = MagicMock(side_effect=OSError(err, "Error: {}".format(err)))
return sock
with patch("socket.socket", _mock_socket):
assert netutils.new_socket(("0.0.0.0", 0)) is None
err = errno.EAGAIN
with pytest.raises(OSError), patch("socket.socket", _mock_socket):
netutils.new_socket(("0.0.0.0", 0))
def test_new_respond_socket_new_socket_returns_none():
"""Test new_respond_socket returns None if new_socket returns None."""
with patch.object(netutils, "new_socket", return_value=None):
assert netutils.new_respond_socket(("0.0.0.0", 0)) is None
07070100000035000041ED000000000000000000000005631651AD00000000000000000000000000000000000000000000002000000000python-zeroconf-0.39.1/zeroconf07070100000036000081A4000000000000000000000001631651AD00000F7D000000000000000000000000000000000000002C00000000python-zeroconf-0.39.1/zeroconf/__init__.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import sys
from ._cache import DNSCache # noqa # import needed for backwards compat
from ._core import Zeroconf
from ._dns import ( # noqa # import needed for backwards compat
DNSAddress,
DNSEntry,
DNSHinfo,
DNSNsec,
DNSPointer,
DNSQuestion,
DNSRecord,
DNSService,
DNSText,
DNSQuestionType,
)
from ._exceptions import (
AbstractMethodException,
BadTypeInNameException,
Error,
EventLoopBlocked,
IncomingDecodeError,
NamePartTooLongException,
NonUniqueNameException,
NotRunningException,
ServiceNameAlreadyRegistered,
)
from ._logger import QuietLogger, log # noqa # import needed for backwards compat
from ._protocol.incoming import DNSIncoming # noqa # import needed for backwards compat
from ._protocol.outgoing import DNSOutgoing # noqa # import needed for backwards compat
from ._services import ( # noqa # import needed for backwards compat
Signal,
SignalRegistrationInterface,
ServiceListener,
ServiceStateChange,
)
from ._services.browser import ServiceBrowser
from ._services.info import ( # noqa # import needed for backwards compat
instance_name_from_service_info,
ServiceInfo,
)
from ._services.registry import ServiceRegistry # noqa # import needed for backwards compat
from ._services.types import ZeroconfServiceTypes
from ._updates import RecordUpdate, RecordUpdateListener
from ._utils.name import service_type_name # noqa # import needed for backwards compat
from ._utils.net import ( # noqa # import needed for backwards compat
add_multicast_member,
autodetect_ip_version,
create_sockets,
get_all_addresses_v6,
InterfaceChoice,
InterfacesType,
IPVersion,
get_all_addresses,
)
from ._utils.time import current_time_millis, millis_to_seconds # noqa # import needed for backwards compat
__author__ = 'Paul Scott-Murphy, William McBrine'
__maintainer__ = 'Jakub Stasiak <jakub@stasiak.at>'
__version__ = '0.39.1'
__license__ = 'LGPL'
__all__ = [
"__version__",
"Zeroconf",
"ServiceInfo",
"ServiceBrowser",
"ServiceListener",
"DNSQuestionType",
"InterfaceChoice",
"ServiceStateChange",
"IPVersion",
"ZeroconfServiceTypes",
"RecordUpdate",
"RecordUpdateListener",
"current_time_millis",
# Exceptions
"Error",
"AbstractMethodException",
"BadTypeInNameException",
"EventLoopBlocked",
"IncomingDecodeError",
"NamePartTooLongException",
"NonUniqueNameException",
"NotRunningException",
"ServiceNameAlreadyRegistered",
]
if sys.version_info <= (3, 6): # pragma: no cover
raise ImportError( # pragma: no cover
'''
Python version > 3.6 required for python-zeroconf.
If you need support for Python 2 or Python 3.3-3.4 please use version 19.1
If you need support for Python 3.5 please use version 0.28.0
'''
)
07070100000037000081A4000000000000000000000001631651AD00002015000000000000000000000000000000000000002A00000000python-zeroconf-0.39.1/zeroconf/_cache.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import itertools
from typing import Dict, Iterable, Iterator, List, Optional, Union, cast
from ._dns import (
DNSAddress,
DNSEntry,
DNSHinfo,
DNSNsec,
DNSPointer,
DNSRecord,
DNSService,
DNSText,
dns_entry_matches,
)
from ._utils.time import current_time_millis
from .const import _TYPE_PTR
_UNIQUE_RECORD_TYPES = (DNSAddress, DNSHinfo, DNSPointer, DNSText, DNSService)
_UniqueRecordsType = Union[DNSAddress, DNSHinfo, DNSPointer, DNSText, DNSService]
_DNSRecordCacheType = Dict[str, Dict[DNSRecord, DNSRecord]]
def _remove_key(cache: _DNSRecordCacheType, key: str, entry: DNSRecord) -> None:
"""Remove a key from a DNSRecord cache
This function must be run in from event loop.
"""
del cache[key][entry]
if not cache[key]:
del cache[key]
class DNSCache:
"""A cache of DNS entries."""
def __init__(self) -> None:
self.cache: _DNSRecordCacheType = {}
self.service_cache: _DNSRecordCacheType = {}
# Functions prefixed with async_ are NOT threadsafe and must
# be run in the event loop.
def _async_add(self, entry: DNSRecord) -> bool:
"""Adds an entry.
Returns true if the entry was not already in the cache.
This function must be run in from event loop.
"""
# Previously storage of records was implemented as a list
# instead a dict. Since DNSRecords are now hashable, the implementation
# uses a dict to ensure that adding a new record to the cache
# replaces any existing records that are __eq__ to each other which
# removes the risk that accessing the cache from the wrong
# direction would return the old incorrect entry.
store = self.cache.setdefault(entry.key, {})
new = entry not in store and not isinstance(entry, DNSNsec)
store[entry] = entry
if isinstance(entry, DNSService):
self.service_cache.setdefault(entry.server_key, {})[entry] = entry
return new
def async_add_records(self, entries: Iterable[DNSRecord]) -> bool:
"""Add multiple records.
Returns true if any of the records were not in the cache.
This function must be run in from event loop.
"""
new = False
for entry in entries:
if self._async_add(entry):
new = True
return new
def _async_remove(self, entry: DNSRecord) -> None:
"""Removes an entry.
This function must be run in from event loop.
"""
if isinstance(entry, DNSService):
_remove_key(self.service_cache, entry.server_key, entry)
_remove_key(self.cache, entry.key, entry)
def async_remove_records(self, entries: Iterable[DNSRecord]) -> None:
"""Remove multiple records.
This function must be run in from event loop.
"""
for entry in entries:
self._async_remove(entry)
def async_expire(self, now: float) -> List[DNSRecord]:
"""Purge expired entries from the cache.
This function must be run in from event loop.
"""
expired = [record for record in itertools.chain(*self.cache.values()) if record.is_expired(now)]
self.async_remove_records(expired)
return expired
def async_get_unique(self, entry: _UniqueRecordsType) -> Optional[DNSRecord]:
"""Gets a unique entry by key. Will return None if there is no
matching entry.
This function is not threadsafe and must be called from
the event loop.
"""
return self.cache.get(entry.key, {}).get(entry)
def async_all_by_details(self, name: str, type_: int, class_: int) -> Iterator[DNSRecord]:
"""Gets all matching entries by details.
This function is not threadsafe and must be called from
the event loop.
"""
key = name.lower()
for entry in self.cache.get(key, []):
if dns_entry_matches(entry, key, type_, class_):
yield entry
def async_entries_with_name(self, name: str) -> Dict[DNSRecord, DNSRecord]:
"""Returns a dict of entries whose key matches the name.
This function is not threadsafe and must be called from
the event loop.
"""
return self.cache.get(name.lower(), {})
def async_entries_with_server(self, name: str) -> Dict[DNSRecord, DNSRecord]:
"""Returns a dict of entries whose key matches the server.
This function is not threadsafe and must be called from
the event loop.
"""
return self.service_cache.get(name.lower(), {})
# The below functions are threadsafe and do not need to be run in the
# event loop, however they all make copies so they significantly
# inefficent
def get(self, entry: DNSEntry) -> Optional[DNSRecord]:
"""Gets an entry by key. Will return None if there is no
matching entry."""
if isinstance(entry, _UNIQUE_RECORD_TYPES):
return self.cache.get(entry.key, {}).get(entry)
for cached_entry in reversed(list(self.cache.get(entry.key, []))):
if entry.__eq__(cached_entry):
return cached_entry
return None
def get_by_details(self, name: str, type_: int, class_: int) -> Optional[DNSRecord]:
"""Gets the first matching entry by details. Returns None if no entries match.
Calling this function is not recommended as it will only
return one record even if there are multiple entries.
For example if there are multiple A or AAAA addresses this
function will return the last one that was added to the cache
which may not be the one you expect.
Use get_all_by_details instead.
"""
key = name.lower()
for cached_entry in reversed(list(self.cache.get(key, []))):
if dns_entry_matches(cached_entry, key, type_, class_):
return cached_entry
return None
def get_all_by_details(self, name: str, type_: int, class_: int) -> List[DNSRecord]:
"""Gets all matching entries by details."""
key = name.lower()
return [
entry for entry in list(self.cache.get(key, [])) if dns_entry_matches(entry, key, type_, class_)
]
def entries_with_server(self, server: str) -> List[DNSRecord]:
"""Returns a list of entries whose server matches the name."""
return list(self.service_cache.get(server.lower(), []))
def entries_with_name(self, name: str) -> List[DNSRecord]:
"""Returns a list of entries whose key matches the name."""
return list(self.cache.get(name.lower(), []))
def current_entry_with_name_and_alias(self, name: str, alias: str) -> Optional[DNSRecord]:
now = current_time_millis()
for record in reversed(self.entries_with_name(name)):
if (
record.type == _TYPE_PTR
and not record.is_expired(now)
and cast(DNSPointer, record).alias == alias
):
return record
return None
def names(self) -> List[str]:
"""Return a copy of the list of current cache names."""
return list(self.cache)
07070100000038000081A4000000000000000000000001631651AD000094A6000000000000000000000000000000000000002900000000python-zeroconf-0.39.1/zeroconf/_core.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import asyncio
import itertools
import logging
import random
import socket
import sys
import threading
from types import TracebackType # noqa # used in type hints
from typing import Awaitable, Dict, List, Optional, Tuple, Type, Union, cast
from ._cache import DNSCache
from ._dns import DNSQuestion, DNSQuestionType
from ._exceptions import NonUniqueNameException, NotRunningException
from ._handlers import (
MulticastOutgoingQueue,
QueryHandler,
RecordManager,
construct_outgoing_multicast_answers,
construct_outgoing_unicast_answers,
)
from ._history import QuestionHistory
from ._logger import QuietLogger, log
from ._protocol.incoming import DNSIncoming
from ._protocol.outgoing import DNSOutgoing
from ._services import ServiceListener
from ._services.browser import ServiceBrowser
from ._services.info import ServiceInfo, instance_name_from_service_info
from ._services.registry import ServiceRegistry
from ._updates import RecordUpdate, RecordUpdateListener
from ._utils.asyncio import (
await_awaitable,
get_running_loop,
run_coro_with_timeout,
shutdown_loop,
wait_event_or_timeout,
)
from ._utils.name import service_type_name
from ._utils.net import (
IPVersion,
InterfaceChoice,
InterfacesType,
autodetect_ip_version,
can_send_to,
create_sockets,
)
from ._utils.time import current_time_millis, millis_to_seconds
from .const import (
_CACHE_CLEANUP_INTERVAL,
_CHECK_TIME,
_CLASS_IN,
_CLASS_UNIQUE,
_FLAGS_AA,
_FLAGS_QR_QUERY,
_FLAGS_QR_RESPONSE,
_MAX_MSG_ABSOLUTE,
_MDNS_ADDR,
_MDNS_ADDR6,
_MDNS_PORT,
_ONE_SECOND,
_REGISTER_TIME,
_STARTUP_TIMEOUT,
_TYPE_PTR,
_UNREGISTER_TIME,
)
_TC_DELAY_RANDOM_INTERVAL = (400, 500)
# The maximum amont of time to delay a multicast
# response in order to aggregate answers
_AGGREGATION_DELAY = 500 # ms
# The maximum amont of time to delay a multicast
# response in order to aggregate answers after
# it has already been delayed to protect the network
# from excessive traffic. We use a shorter time
# window here as we want to _try_ to answer all
# queries in under 1350ms while protecting
# the network from excessive traffic to ensure
# a service info request with two questions
# can be answered in the default timeout of
# 3000ms
_PROTECTED_AGGREGATION_DELAY = 200 # ms
_CLOSE_TIMEOUT = 3000 # ms
_REGISTER_BROADCASTS = 3
class AsyncEngine:
"""An engine wraps sockets in the event loop."""
def __init__(
self,
zeroconf: 'Zeroconf',
listen_socket: Optional[socket.socket],
respond_sockets: List[socket.socket],
) -> None:
self.loop: Optional[asyncio.AbstractEventLoop] = None
self.zc = zeroconf
self.protocols: List[AsyncListener] = []
self.readers: List[asyncio.DatagramTransport] = []
self.senders: List[asyncio.DatagramTransport] = []
self.running_event: Optional[asyncio.Event] = None
self._listen_socket = listen_socket
self._respond_sockets = respond_sockets
self._cleanup_timer: Optional[asyncio.TimerHandle] = None
def setup(self, loop: asyncio.AbstractEventLoop, loop_thread_ready: Optional[threading.Event]) -> None:
"""Set up the instance."""
self.loop = loop
self.running_event = asyncio.Event()
self.loop.create_task(self._async_setup(loop_thread_ready))
async def _async_setup(self, loop_thread_ready: Optional[threading.Event]) -> None:
"""Set up the instance."""
assert self.loop is not None
self._cleanup_timer = self.loop.call_later(
millis_to_seconds(_CACHE_CLEANUP_INTERVAL), self._async_cache_cleanup
)
await self._async_create_endpoints()
assert self.running_event is not None
self.running_event.set()
if loop_thread_ready:
loop_thread_ready.set()
async def _async_create_endpoints(self) -> None:
"""Create endpoints to send and receive."""
assert self.loop is not None
loop = self.loop
reader_sockets = []
sender_sockets = []
if self._listen_socket:
reader_sockets.append(self._listen_socket)
for s in self._respond_sockets:
if s not in reader_sockets:
reader_sockets.append(s)
sender_sockets.append(s)
for s in reader_sockets:
transport, protocol = await loop.create_datagram_endpoint(lambda: AsyncListener(self.zc), sock=s)
self.protocols.append(cast(AsyncListener, protocol))
self.readers.append(cast(asyncio.DatagramTransport, transport))
if s in sender_sockets:
self.senders.append(cast(asyncio.DatagramTransport, transport))
def _async_cache_cleanup(self) -> None:
"""Periodic cache cleanup."""
now = current_time_millis()
self.zc.question_history.async_expire(now)
self.zc.record_manager.async_updates(
now, [RecordUpdate(record, record) for record in self.zc.cache.async_expire(now)]
)
self.zc.record_manager.async_updates_complete(False)
assert self.loop is not None
self._cleanup_timer = self.loop.call_later(
millis_to_seconds(_CACHE_CLEANUP_INTERVAL), self._async_cache_cleanup
)
async def _async_close(self) -> None:
"""Cancel and wait for the cleanup task to finish."""
self._async_shutdown()
await asyncio.sleep(0) # flush out any call soons
assert self._cleanup_timer is not None
self._cleanup_timer.cancel()
def _async_shutdown(self) -> None:
"""Shutdown transports and sockets."""
assert self.running_event is not None
self.running_event.clear()
for transport in itertools.chain(self.senders, self.readers):
transport.close()
def close(self) -> None:
"""Close from sync context.
While it is not expected during normal operation,
this function may raise EventLoopBlocked if the underlying
call to `_async_close` cannot be completed.
"""
assert self.loop is not None
# Guard against Zeroconf.close() being called from the eventloop
if get_running_loop() == self.loop:
self._async_shutdown()
return
if not self.loop.is_running():
return
run_coro_with_timeout(self._async_close(), self.loop, _CLOSE_TIMEOUT)
class AsyncListener(asyncio.Protocol, QuietLogger):
"""A Listener is used by this module to listen on the multicast
group to which DNS messages are sent, allowing the implementation
to cache information as it arrives.
It requires registration with an Engine object in order to have
the read() method called when a socket is available for reading."""
__slots__ = ('zc', 'data', 'last_time', 'transport', 'sock_description', '_deferred', '_timers')
def __init__(self, zc: 'Zeroconf') -> None:
self.zc = zc
self.data: Optional[bytes] = None
self.last_time: float = 0
self.transport: Optional[asyncio.DatagramTransport] = None
self.sock_description: Optional[str] = None
self._deferred: Dict[str, List[DNSIncoming]] = {}
self._timers: Dict[str, asyncio.TimerHandle] = {}
super().__init__()
def suppress_duplicate_packet(self, data: bytes, now: float) -> bool:
"""Suppress duplicate packet if the last one was the same in the last second."""
if self.data == data and (now - 1000) < self.last_time:
return True
self.data = data
self.last_time = now
return False
def datagram_received(
self, data: bytes, addrs: Union[Tuple[str, int], Tuple[str, int, int, int]]
) -> None:
assert self.transport is not None
v6_flow_scope: Union[Tuple[()], Tuple[int, int]] = ()
data_len = len(data)
if len(addrs) == 2:
# https://github.com/python/mypy/issues/1178
addr, port = addrs # type: ignore
scope = None
else:
# https://github.com/python/mypy/issues/1178
addr, port, flow, scope = addrs # type: ignore
log.debug('IPv6 scope_id %d associated to the receiving interface', scope)
v6_flow_scope = (flow, scope)
now = current_time_millis()
if self.suppress_duplicate_packet(data, now):
# Guard against duplicate packets
log.debug(
'Ignoring duplicate message received from %r:%r [socket %s] (%d bytes) as [%r]',
addr,
port,
self.sock_description,
data_len,
data,
)
return
if data_len > _MAX_MSG_ABSOLUTE:
# Guard against oversized packets to ensure bad implementations cannot overwhelm
# the system.
log.debug(
"Discarding incoming packet with length %s, which is larger "
"than the absolute maximum size of %s",
data_len,
_MAX_MSG_ABSOLUTE,
)
return
msg = DNSIncoming(data, (addr, port), scope, now)
if msg.valid:
log.debug(
'Received from %r:%r [socket %s]: %r (%d bytes) as [%r]',
addr,
port,
self.sock_description,
msg,
data_len,
data,
)
else:
log.debug(
'Received from %r:%r [socket %s]: (%d bytes) [%r]',
addr,
port,
self.sock_description,
data_len,
data,
)
return
if not msg.is_query():
self.zc.handle_response(msg)
return
self.handle_query_or_defer(msg, addr, port, self.transport, v6_flow_scope)
def handle_query_or_defer(
self,
msg: DNSIncoming,
addr: str,
port: int,
transport: asyncio.DatagramTransport,
v6_flow_scope: Union[Tuple[()], Tuple[int, int]] = (),
) -> None:
"""Deal with incoming query packets. Provides a response if
possible."""
if not msg.truncated:
self._respond_query(msg, addr, port, transport, v6_flow_scope)
return
deferred = self._deferred.setdefault(addr, [])
# If we get the same packet we ignore it
for incoming in reversed(deferred):
if incoming.data == msg.data:
return
deferred.append(msg)
delay = millis_to_seconds(random.randint(*_TC_DELAY_RANDOM_INTERVAL))
assert self.zc.loop is not None
self._cancel_any_timers_for_addr(addr)
self._timers[addr] = self.zc.loop.call_later(
delay, self._respond_query, None, addr, port, transport, v6_flow_scope
)
def _cancel_any_timers_for_addr(self, addr: str) -> None:
"""Cancel any future truncated packet timers for the address."""
if addr in self._timers:
self._timers.pop(addr).cancel()
def _respond_query(
self,
msg: Optional[DNSIncoming],
addr: str,
port: int,
transport: asyncio.DatagramTransport,
v6_flow_scope: Union[Tuple[()], Tuple[int, int]] = (),
) -> None:
"""Respond to a query and reassemble any truncated deferred packets."""
self._cancel_any_timers_for_addr(addr)
packets = self._deferred.pop(addr, [])
if msg:
packets.append(msg)
self.zc.handle_assembled_query(packets, addr, port, transport, v6_flow_scope)
def error_received(self, exc: Exception) -> None:
"""Likely socket closed or IPv6."""
# We preformat the message string with the socket as we want
# log_exception_once to log a warrning message once PER EACH
# different socket in case there are problems with multiple
# sockets
msg_str = f"Error with socket {self.sock_description}): %s"
self.log_exception_once(exc, msg_str, exc)
def connection_made(self, transport: asyncio.BaseTransport) -> None:
self.transport = cast(asyncio.DatagramTransport, transport)
sock_name = self.transport.get_extra_info('sockname')
sock_fileno = self.transport.get_extra_info('socket').fileno()
self.sock_description = f"{sock_fileno} ({sock_name})"
def connection_lost(self, exc: Optional[Exception]) -> None:
"""Handle connection lost."""
def async_send_with_transport(
log_debug: bool,
transport: asyncio.DatagramTransport,
packet: bytes,
packet_num: int,
out: DNSOutgoing,
addr: Optional[str],
port: int,
v6_flow_scope: Union[Tuple[()], Tuple[int, int]] = (),
) -> None:
s = transport.get_extra_info('socket')
ipv6_socket = s.family == socket.AF_INET6
if addr is None:
real_addr = _MDNS_ADDR6 if ipv6_socket else _MDNS_ADDR
else:
real_addr = addr
if not can_send_to(ipv6_socket, real_addr):
return
if log_debug:
log.debug(
'Sending to (%s, %d) via [socket %s (%s)] (%d bytes #%d) %r as %r...',
real_addr,
port or _MDNS_PORT,
s.fileno(),
transport.get_extra_info('sockname'),
len(packet),
packet_num + 1,
out,
packet,
)
# Get flowinfo and scopeid for the IPV6 socket to create a complete IPv6
# address tuple: https://docs.python.org/3.6/library/socket.html#socket-families
if ipv6_socket and not v6_flow_scope:
_, _, sock_flowinfo, sock_scopeid = s.getsockname()
v6_flow_scope = (sock_flowinfo, sock_scopeid)
transport.sendto(packet, (real_addr, port or _MDNS_PORT, *v6_flow_scope))
class Zeroconf(QuietLogger):
"""Implementation of Zeroconf Multicast DNS Service Discovery
Supports registration, unregistration, queries and browsing.
"""
def __init__(
self,
interfaces: InterfacesType = InterfaceChoice.All,
unicast: bool = False,
ip_version: Optional[IPVersion] = None,
apple_p2p: bool = False,
) -> None:
"""Creates an instance of the Zeroconf class, establishing
multicast communications, listening and reaping threads.
:param interfaces: :class:`InterfaceChoice` or a list of IP addresses
(IPv4 and IPv6) and interface indexes (IPv6 only).
IPv6 notes for non-POSIX systems:
* `InterfaceChoice.All` is an alias for `InterfaceChoice.Default`
on Python versions before 3.8.
Also listening on loopback (``::1``) doesn't work, use a real address.
:param ip_version: IP versions to support. If `choice` is a list, the default is detected
from it. Otherwise defaults to V4 only for backward compatibility.
:param apple_p2p: use AWDL interface (only macOS)
"""
if ip_version is None:
ip_version = autodetect_ip_version(interfaces)
self.done = False
if apple_p2p and sys.platform != 'darwin':
raise RuntimeError('Option `apple_p2p` is not supported on non-Apple platforms.')
self.unicast = unicast
listen_socket, respond_sockets = create_sockets(interfaces, unicast, ip_version, apple_p2p=apple_p2p)
log.debug('Listen socket %s, respond sockets %s', listen_socket, respond_sockets)
self.engine = AsyncEngine(self, listen_socket, respond_sockets)
self.browsers: Dict[ServiceListener, ServiceBrowser] = {}
self.registry = ServiceRegistry()
self.cache = DNSCache()
self.question_history = QuestionHistory()
self.query_handler = QueryHandler(self.registry, self.cache, self.question_history)
self.record_manager = RecordManager(self)
self.notify_event: Optional[asyncio.Event] = None
self.loop: Optional[asyncio.AbstractEventLoop] = None
self._loop_thread: Optional[threading.Thread] = None
self._out_queue = MulticastOutgoingQueue(self, 0, _AGGREGATION_DELAY)
self._out_delay_queue = MulticastOutgoingQueue(self, _ONE_SECOND, _PROTECTED_AGGREGATION_DELAY)
self.start()
@property
def started(self) -> bool:
"""Check if the instance has started."""
return bool(not self.done and self.engine.running_event and self.engine.running_event.is_set())
def start(self) -> None:
"""Start Zeroconf."""
self.loop = get_running_loop()
if self.loop:
self.notify_event = asyncio.Event()
self.engine.setup(self.loop, None)
return
self._start_thread()
def _start_thread(self) -> None:
"""Start a thread with a running event loop."""
loop_thread_ready = threading.Event()
def _run_loop() -> None:
self.loop = asyncio.new_event_loop()
asyncio.set_event_loop(self.loop)
self.notify_event = asyncio.Event()
self.engine.setup(self.loop, loop_thread_ready)
self.loop.run_forever()
self._loop_thread = threading.Thread(target=_run_loop, daemon=True)
self._loop_thread.start()
loop_thread_ready.wait()
async def async_wait_for_start(self) -> None:
"""Wait for start up for actions that require a running Zeroconf instance.
Throws NotRunningException if the instance is not running or could
not be started.
"""
if self.done: # If the instance was shutdown from under us, raise immediately
raise NotRunningException
assert self.engine.running_event is not None
await wait_event_or_timeout(self.engine.running_event, timeout=_STARTUP_TIMEOUT)
if not self.engine.running_event.is_set() or self.done:
raise NotRunningException
@property
def listeners(self) -> List[RecordUpdateListener]:
return self.record_manager.listeners
async def async_wait(self, timeout: float) -> None:
"""Calling task waits for a given number of milliseconds or until notified."""
assert self.notify_event is not None
await wait_event_or_timeout(self.notify_event, timeout=millis_to_seconds(timeout))
def notify_all(self) -> None:
"""Notifies all waiting threads and notify listeners."""
assert self.loop is not None
self.loop.call_soon_threadsafe(self.async_notify_all)
def async_notify_all(self) -> None:
"""Schedule an async_notify_all."""
assert self.notify_event is not None
self.notify_event.set()
self.notify_event.clear()
def get_service_info(
self, type_: str, name: str, timeout: int = 3000, question_type: Optional[DNSQuestionType] = None
) -> Optional[ServiceInfo]:
"""Returns network's service information for a particular
name and type, or None if no service matches by the timeout,
which defaults to 3 seconds."""
info = ServiceInfo(type_, name)
if info.request(self, timeout, question_type):
return info
return None
def add_service_listener(self, type_: str, listener: ServiceListener) -> None:
"""Adds a listener for a particular service type. This object
will then have its add_service and remove_service methods called when
services of that type become available and unavailable."""
self.remove_service_listener(listener)
self.browsers[listener] = ServiceBrowser(self, type_, listener)
def remove_service_listener(self, listener: ServiceListener) -> None:
"""Removes a listener from the set that is currently listening."""
if listener in self.browsers:
self.browsers[listener].cancel()
del self.browsers[listener]
def remove_all_service_listeners(self) -> None:
"""Removes a listener from the set that is currently listening."""
for listener in list(self.browsers):
self.remove_service_listener(listener)
def register_service(
self,
info: ServiceInfo,
ttl: Optional[int] = None,
allow_name_change: bool = False,
cooperating_responders: bool = False,
) -> None:
"""Registers service information to the network with a default TTL.
Zeroconf will then respond to requests for information for that
service. The name of the service may be changed if needed to make
it unique on the network. Additionally multiple cooperating responders
can register the same service on the network for resilience
(if you want this behavior set `cooperating_responders` to `True`).
While it is not expected during normal operation,
this function may raise EventLoopBlocked if the underlying
call to `register_service` cannot be completed.
"""
assert self.loop is not None
run_coro_with_timeout(
await_awaitable(
self.async_register_service(info, ttl, allow_name_change, cooperating_responders)
),
self.loop,
_REGISTER_TIME * _REGISTER_BROADCASTS,
)
async def async_register_service(
self,
info: ServiceInfo,
ttl: Optional[int] = None,
allow_name_change: bool = False,
cooperating_responders: bool = False,
) -> Awaitable:
"""Registers service information to the network with a default TTL.
Zeroconf will then respond to requests for information for that
service. The name of the service may be changed if needed to make
it unique on the network. Additionally multiple cooperating responders
can register the same service on the network for resilience
(if you want this behavior set `cooperating_responders` to `True`)."""
if ttl is not None:
# ttl argument is used to maintain backward compatibility
# Setting TTLs via ServiceInfo is preferred
info.host_ttl = ttl
info.other_ttl = ttl
await self.async_wait_for_start()
await self.async_check_service(info, allow_name_change, cooperating_responders)
self.registry.async_add(info)
return asyncio.ensure_future(self._async_broadcast_service(info, _REGISTER_TIME, None))
def update_service(self, info: ServiceInfo) -> None:
"""Registers service information to the network with a default TTL.
Zeroconf will then respond to requests for information for that
service.
While it is not expected during normal operation,
this function may raise EventLoopBlocked if the underlying
call to `async_update_service` cannot be completed.
"""
assert self.loop is not None
run_coro_with_timeout(
await_awaitable(self.async_update_service(info)), self.loop, _REGISTER_TIME * _REGISTER_BROADCASTS
)
async def async_update_service(self, info: ServiceInfo) -> Awaitable:
"""Registers service information to the network with a default TTL.
Zeroconf will then respond to requests for information for that
service."""
self.registry.async_update(info)
return asyncio.ensure_future(self._async_broadcast_service(info, _REGISTER_TIME, None))
async def _async_broadcast_service(
self,
info: ServiceInfo,
interval: int,
ttl: Optional[int],
broadcast_addresses: bool = True,
) -> None:
"""Send a broadcasts to announce a service at intervals."""
for i in range(_REGISTER_BROADCASTS):
if i != 0:
await asyncio.sleep(millis_to_seconds(interval))
self.async_send(self.generate_service_broadcast(info, ttl, broadcast_addresses))
def generate_service_broadcast(
self,
info: ServiceInfo,
ttl: Optional[int],
broadcast_addresses: bool = True,
) -> DNSOutgoing:
"""Generate a broadcast to announce a service."""
out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
self._add_broadcast_answer(out, info, ttl, broadcast_addresses)
return out
def generate_service_query(self, info: ServiceInfo) -> DNSOutgoing: # pylint: disable=no-self-use
"""Generate a query to lookup a service."""
out = DNSOutgoing(_FLAGS_QR_QUERY | _FLAGS_AA)
# https://datatracker.ietf.org/doc/html/rfc6762#section-8.1
# Because of the mDNS multicast rate-limiting
# rules, the probes SHOULD be sent as "QU" questions with the unicast-
# response bit set, to allow a defending host to respond immediately
# via unicast, instead of potentially having to wait before replying
# via multicast.
#
# _CLASS_UNIQUE is the "QU" bit
out.add_question(DNSQuestion(info.type, _TYPE_PTR, _CLASS_IN | _CLASS_UNIQUE))
out.add_authorative_answer(info.dns_pointer(created=current_time_millis()))
return out
def _add_broadcast_answer( # pylint: disable=no-self-use
self,
out: DNSOutgoing,
info: ServiceInfo,
override_ttl: Optional[int],
broadcast_addresses: bool = True,
) -> None:
"""Add answers to broadcast a service."""
now = current_time_millis()
other_ttl = info.other_ttl if override_ttl is None else override_ttl
host_ttl = info.host_ttl if override_ttl is None else override_ttl
out.add_answer_at_time(info.dns_pointer(override_ttl=other_ttl, created=now), 0)
out.add_answer_at_time(info.dns_service(override_ttl=host_ttl, created=now), 0)
out.add_answer_at_time(info.dns_text(override_ttl=other_ttl, created=now), 0)
if broadcast_addresses:
for dns_address in info.dns_addresses(override_ttl=host_ttl, created=now):
out.add_answer_at_time(dns_address, 0)
def unregister_service(self, info: ServiceInfo) -> None:
"""Unregister a service.
While it is not expected during normal operation,
this function may raise EventLoopBlocked if the underlying
call to `async_unregister_service` cannot be completed.
"""
assert self.loop is not None
run_coro_with_timeout(
self.async_unregister_service(info), self.loop, _UNREGISTER_TIME * _REGISTER_BROADCASTS
)
async def async_unregister_service(self, info: ServiceInfo) -> Awaitable:
"""Unregister a service."""
self.registry.async_remove(info)
# If another server uses the same addresses, we do not want to send
# goodbye packets for the address records
entries = self.registry.async_get_infos_server(info.server)
broadcast_addresses = not bool(entries)
return asyncio.ensure_future(
self._async_broadcast_service(info, _UNREGISTER_TIME, 0, broadcast_addresses)
)
def generate_unregister_all_services(self) -> Optional[DNSOutgoing]:
"""Generate a DNSOutgoing goodbye for all services and remove them from the registry."""
service_infos = self.registry.async_get_service_infos()
if not service_infos:
return None
out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
for info in service_infos:
self._add_broadcast_answer(out, info, 0)
self.registry.async_remove(service_infos)
return out
async def async_unregister_all_services(self) -> None:
"""Unregister all registered services.
Unlike async_register_service and async_unregister_service, this
method does not return a future and is always expected to be
awaited since its only called at shutdown.
"""
# Send Goodbye packets https://datatracker.ietf.org/doc/html/rfc6762#section-10.1
out = self.generate_unregister_all_services()
if not out:
return
for i in range(_REGISTER_BROADCASTS):
if i != 0:
await asyncio.sleep(millis_to_seconds(_UNREGISTER_TIME))
self.async_send(out)
def unregister_all_services(self) -> None:
"""Unregister all registered services.
While it is not expected during normal operation,
this function may raise EventLoopBlocked if the underlying
call to `async_unregister_all_services` cannot be completed.
"""
assert self.loop is not None
run_coro_with_timeout(
self.async_unregister_all_services(), self.loop, _UNREGISTER_TIME * _REGISTER_BROADCASTS
)
async def async_check_service(
self, info: ServiceInfo, allow_name_change: bool, cooperating_responders: bool = False
) -> None:
"""Checks the network for a unique service name, modifying the
ServiceInfo passed in if it is not unique."""
instance_name = instance_name_from_service_info(info)
if cooperating_responders:
return
next_instance_number = 2
next_time = now = current_time_millis()
i = 0
while i < _REGISTER_BROADCASTS:
# check for a name conflict
while self.cache.current_entry_with_name_and_alias(info.type, info.name):
if not allow_name_change:
raise NonUniqueNameException
# change the name and look for a conflict
info.name = f'{instance_name}-{next_instance_number}.{info.type}'
next_instance_number += 1
service_type_name(info.name)
next_time = now
i = 0
if now < next_time:
await self.async_wait(next_time - now)
now = current_time_millis()
continue
self.async_send(self.generate_service_query(info))
i += 1
next_time += _CHECK_TIME
def add_listener(
self, listener: RecordUpdateListener, question: Optional[Union[DNSQuestion, List[DNSQuestion]]]
) -> None:
"""Adds a listener for a given question. The listener will have
its update_record method called when information is available to
answer the question(s).
This function is threadsafe
"""
assert self.loop is not None
self.loop.call_soon_threadsafe(self.record_manager.async_add_listener, listener, question)
def remove_listener(self, listener: RecordUpdateListener) -> None:
"""Removes a listener.
This function is threadsafe
"""
assert self.loop is not None
self.loop.call_soon_threadsafe(self.record_manager.async_remove_listener, listener)
def async_add_listener(
self, listener: RecordUpdateListener, question: Optional[Union[DNSQuestion, List[DNSQuestion]]]
) -> None:
"""Adds a listener for a given question. The listener will have
its update_record method called when information is available to
answer the question(s).
This function is not threadsafe and must be called in the eventloop.
"""
self.record_manager.async_add_listener(listener, question)
def async_remove_listener(self, listener: RecordUpdateListener) -> None:
"""Removes a listener.
This function is not threadsafe and must be called in the eventloop.
"""
self.record_manager.async_remove_listener(listener)
def handle_response(self, msg: DNSIncoming) -> None:
"""Deal with incoming response packets. All answers
are held in the cache, and listeners are notified."""
self.record_manager.async_updates_from_response(msg)
def handle_assembled_query(
self,
packets: List[DNSIncoming],
addr: str,
port: int,
transport: asyncio.DatagramTransport,
v6_flow_scope: Union[Tuple[()], Tuple[int, int]] = (),
) -> None:
"""Respond to a (re)assembled query.
If the protocol recieved packets with the TC bit set, it will
wait a bit for the rest of the packets and only call
handle_assembled_query once it has a complete set of packets
or the timer expires. If the TC bit is not set, a single
packet will be in packets.
"""
now = packets[0].now
ucast_source = port != _MDNS_PORT
question_answers = self.query_handler.async_response(packets, ucast_source)
if question_answers.ucast:
questions = packets[0].questions
id_ = packets[0].id
out = construct_outgoing_unicast_answers(question_answers.ucast, ucast_source, questions, id_)
# When sending unicast, only send back the reply
# via the same socket that it was recieved from
# as we know its reachable from that socket
self.async_send(out, addr, port, v6_flow_scope, transport)
if question_answers.mcast_now:
self.async_send(construct_outgoing_multicast_answers(question_answers.mcast_now))
if question_answers.mcast_aggregate:
self._out_queue.async_add(now, question_answers.mcast_aggregate)
if question_answers.mcast_aggregate_last_second:
# https://datatracker.ietf.org/doc/html/rfc6762#section-14
# If we broadcast it in the last second, we have to delay
# at least a second before we send it again
self._out_delay_queue.async_add(now, question_answers.mcast_aggregate_last_second)
def send(
self,
out: DNSOutgoing,
addr: Optional[str] = None,
port: int = _MDNS_PORT,
v6_flow_scope: Union[Tuple[()], Tuple[int, int]] = (),
transport: Optional[asyncio.DatagramTransport] = None,
) -> None:
"""Sends an outgoing packet threadsafe."""
assert self.loop is not None
self.loop.call_soon_threadsafe(self.async_send, out, addr, port, v6_flow_scope, transport)
def async_send(
self,
out: DNSOutgoing,
addr: Optional[str] = None,
port: int = _MDNS_PORT,
v6_flow_scope: Union[Tuple[()], Tuple[int, int]] = (),
transport: Optional[asyncio.DatagramTransport] = None,
) -> None:
"""Sends an outgoing packet."""
if self.done:
return
# If no transport is specified, we send to all the ones
# with the same address family
transports = [transport] if transport else self.engine.senders
log_debug = log.isEnabledFor(logging.DEBUG)
for packet_num, packet in enumerate(out.packets()):
if len(packet) > _MAX_MSG_ABSOLUTE:
self.log_warning_once("Dropping %r over-sized packet (%d bytes) %r", out, len(packet), packet)
return
for send_transport in transports:
async_send_with_transport(
log_debug, send_transport, packet, packet_num, out, addr, port, v6_flow_scope
)
def _close(self) -> None:
"""Set global done and remove all service listeners."""
if self.done:
return
self.remove_all_service_listeners()
self.done = True
def _shutdown_threads(self) -> None:
"""Shutdown any threads."""
self.notify_all()
if not self._loop_thread:
return
assert self.loop is not None
shutdown_loop(self.loop)
self._loop_thread.join()
self._loop_thread = None
def close(self) -> None:
"""Ends the background threads, and prevent this instance from
servicing further queries.
This method is idempotent and irreversible.
"""
assert self.loop is not None
if self.loop.is_running():
if self.loop == get_running_loop():
log.warning(
"unregister_all_services skipped as it does blocking i/o; use AsyncZeroconf with asyncio"
)
else:
self.unregister_all_services()
self._close()
self.engine.close()
self._shutdown_threads()
async def _async_close(self) -> None:
"""Ends the background threads, and prevent this instance from
servicing further queries.
This method is idempotent and irreversible.
This call only intended to be used by AsyncZeroconf
Callers are responsible for unregistering all services
before calling this function
"""
self._close()
await self.engine._async_close() # pylint: disable=protected-access
self._shutdown_threads()
def __enter__(self) -> 'Zeroconf':
return self
def __exit__( # pylint: disable=useless-return
self,
exc_type: Optional[Type[BaseException]],
exc_val: Optional[BaseException],
exc_tb: Optional[TracebackType],
) -> Optional[bool]:
self.close()
return None
07070100000039000081A4000000000000000000000001631651AD00004468000000000000000000000000000000000000002800000000python-zeroconf-0.39.1/zeroconf/_dns.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import enum
import socket
from typing import Any, Dict, Iterable, List, Optional, TYPE_CHECKING, Union, cast
from ._exceptions import AbstractMethodException
from ._utils.net import _is_v6_address
from ._utils.time import current_time_millis, millis_to_seconds
from .const import (
_CLASSES,
_CLASS_MASK,
_CLASS_UNIQUE,
_TYPES,
_TYPE_ANY,
)
_LEN_BYTE = 1
_LEN_SHORT = 2
_LEN_INT = 4
_BASE_MAX_SIZE = _LEN_SHORT + _LEN_SHORT + _LEN_INT + _LEN_SHORT # type # class # ttl # length
_NAME_COMPRESSION_MIN_SIZE = _LEN_BYTE * 2
_EXPIRE_FULL_TIME_MS = 1000
_EXPIRE_STALE_TIME_MS = 500
_RECENT_TIME_MS = 250
if TYPE_CHECKING:
from ._protocol.incoming import DNSIncoming
from ._protocol.outgoing import DNSOutgoing
@enum.unique
class DNSQuestionType(enum.Enum):
"""An MDNS question type.
"QU" - questions requesting unicast responses
"QM" - questions requesting multicast responses
https://datatracker.ietf.org/doc/html/rfc6762#section-5.4
"""
QU = 1
QM = 2
def dns_entry_matches(record: 'DNSEntry', key: str, type_: int, class_: int) -> bool:
return key == record.key and type_ == record.type and class_ == record.class_
class DNSEntry:
"""A DNS entry"""
__slots__ = ('key', 'name', 'type', 'class_', 'unique')
def __init__(self, name: str, type_: int, class_: int) -> None:
self.key = name.lower()
self.name = name
self.type = type_
self.class_ = class_ & _CLASS_MASK
self.unique = (class_ & _CLASS_UNIQUE) != 0
def __eq__(self, other: Any) -> bool:
"""Equality test on key (lowercase name), type, and class"""
return dns_entry_matches(other, self.key, self.type, self.class_) and isinstance(other, DNSEntry)
@staticmethod
def get_class_(class_: int) -> str:
"""Class accessor"""
return _CLASSES.get(class_, f"?({class_})")
@staticmethod
def get_type(t: int) -> str:
"""Type accessor"""
return _TYPES.get(t, f"?({t})")
def entry_to_string(self, hdr: str, other: Optional[Union[bytes, str]]) -> str:
"""String representation with additional information"""
return "{}[{},{}{},{}]{}".format(
hdr,
self.get_type(self.type),
self.get_class_(self.class_),
"-unique" if self.unique else "",
self.name,
"=%s" % cast(Any, other) if other is not None else "",
)
class DNSQuestion(DNSEntry):
"""A DNS question entry"""
__slots__ = ('_hash',)
def __init__(self, name: str, type_: int, class_: int) -> None:
super().__init__(name, type_, class_)
self._hash = hash((self.key, type_, self.class_))
def answered_by(self, rec: 'DNSRecord') -> bool:
"""Returns true if the question is answered by the record"""
return self.class_ == rec.class_ and self.type in (rec.type, _TYPE_ANY) and self.name == rec.name
def __hash__(self) -> int:
return self._hash
def __eq__(self, other: Any) -> bool:
"""Tests equality on dns question."""
return isinstance(other, DNSQuestion) and dns_entry_matches(other, self.key, self.type, self.class_)
@property
def max_size(self) -> int:
"""Maximum size of the question in the packet."""
return len(self.name.encode('utf-8')) + _LEN_BYTE + _LEN_SHORT + _LEN_SHORT # type # class
@property
def unicast(self) -> bool:
"""Returns true if the QU (not QM) is set.
unique shares the same mask as the one
used for unicast.
"""
return self.unique
@unicast.setter
def unicast(self, value: bool) -> None:
"""Sets the QU bit (not QM)."""
self.unique = value
def __repr__(self) -> str:
"""String representation"""
return "{}[question,{},{},{}]".format(
self.get_type(self.type),
"QU" if self.unicast else "QM",
self.get_class_(self.class_),
self.name,
)
class DNSRecord(DNSEntry):
"""A DNS record - like a DNS entry, but has a TTL"""
__slots__ = ('ttl', 'created')
# TODO: Switch to just int ttl
def __init__(
self, name: str, type_: int, class_: int, ttl: Union[float, int], created: Optional[float] = None
) -> None:
super().__init__(name, type_, class_)
self.ttl = ttl
self.created = created or current_time_millis()
def __eq__(self, other: Any) -> bool: # pylint: disable=no-self-use
"""Abstract method"""
raise AbstractMethodException
def suppressed_by(self, msg: 'DNSIncoming') -> bool:
"""Returns true if any answer in a message can suffice for the
information held in this record."""
return any(self.suppressed_by_answer(record) for record in msg.answers)
def suppressed_by_answer(self, other: 'DNSRecord') -> bool:
"""Returns true if another record has same name, type and class,
and if its TTL is at least half of this record's."""
return self == other and other.ttl > (self.ttl / 2)
def get_expiration_time(self, percent: int) -> float:
"""Returns the time at which this record will have expired
by a certain percentage."""
return self.created + (percent * self.ttl * 10)
# TODO: Switch to just int here
def get_remaining_ttl(self, now: float) -> Union[int, float]:
"""Returns the remaining TTL in seconds."""
return max(0, millis_to_seconds((self.created + (_EXPIRE_FULL_TIME_MS * self.ttl)) - now))
def is_expired(self, now: float) -> bool:
"""Returns true if this record has expired."""
return self.created + (_EXPIRE_FULL_TIME_MS * self.ttl) <= now
def is_stale(self, now: float) -> bool:
"""Returns true if this record is at least half way expired."""
return self.created + (_EXPIRE_STALE_TIME_MS * self.ttl) <= now
def is_recent(self, now: float) -> bool:
"""Returns true if the record more than one quarter of its TTL remaining."""
return self.created + (_RECENT_TIME_MS * self.ttl) > now
def reset_ttl(self, other: 'DNSRecord') -> None:
"""Sets this record's TTL and created time to that of
another record."""
self.set_created_ttl(other.created, other.ttl)
def set_created_ttl(self, created: float, ttl: Union[float, int]) -> None:
"""Set the created and ttl of a record."""
self.created = created
self.ttl = ttl
def write(self, out: 'DNSOutgoing') -> None: # pylint: disable=no-self-use
"""Abstract method"""
raise AbstractMethodException
def to_string(self, other: Union[bytes, str]) -> str:
"""String representation with additional information"""
arg = f"{self.ttl}/{int(self.get_remaining_ttl(current_time_millis()))},{cast(Any, other)}"
return DNSEntry.entry_to_string(self, "record", arg)
class DNSAddress(DNSRecord):
"""A DNS address record"""
__slots__ = ('_hash', 'address', 'scope_id')
def __init__(
self,
name: str,
type_: int,
class_: int,
ttl: int,
address: bytes,
*,
scope_id: Optional[int] = None,
created: Optional[float] = None,
) -> None:
super().__init__(name, type_, class_, ttl, created)
self.address = address
self.scope_id = scope_id
self._hash = hash((self.key, type_, self.class_, address, scope_id))
def write(self, out: 'DNSOutgoing') -> None:
"""Used in constructing an outgoing packet"""
out.write_string(self.address)
def __eq__(self, other: Any) -> bool:
"""Tests equality on address"""
return (
isinstance(other, DNSAddress)
and self.address == other.address
and self.scope_id == other.scope_id
and dns_entry_matches(other, self.key, self.type, self.class_)
)
def __hash__(self) -> int:
"""Hash to compare like DNSAddresses."""
return self._hash
def __repr__(self) -> str:
"""String representation"""
try:
return self.to_string(
socket.inet_ntop(
socket.AF_INET6 if _is_v6_address(self.address) else socket.AF_INET, self.address
)
)
except (ValueError, OSError):
return self.to_string(str(self.address))
class DNSHinfo(DNSRecord):
"""A DNS host information record"""
__slots__ = ('_hash', 'cpu', 'os')
def __init__(
self, name: str, type_: int, class_: int, ttl: int, cpu: str, os: str, created: Optional[float] = None
) -> None:
super().__init__(name, type_, class_, ttl, created)
self.cpu = cpu
self.os = os
self._hash = hash((self.key, type_, self.class_, cpu, os))
def write(self, out: 'DNSOutgoing') -> None:
"""Used in constructing an outgoing packet"""
out.write_character_string(self.cpu.encode('utf-8'))
out.write_character_string(self.os.encode('utf-8'))
def __eq__(self, other: Any) -> bool:
"""Tests equality on cpu and os"""
return (
isinstance(other, DNSHinfo)
and self.cpu == other.cpu
and self.os == other.os
and dns_entry_matches(other, self.key, self.type, self.class_)
)
def __hash__(self) -> int:
"""Hash to compare like DNSHinfo."""
return self._hash
def __repr__(self) -> str:
"""String representation"""
return self.to_string(self.cpu + " " + self.os)
class DNSPointer(DNSRecord):
"""A DNS pointer record"""
__slots__ = ('_hash', 'alias')
def __init__(
self, name: str, type_: int, class_: int, ttl: int, alias: str, created: Optional[float] = None
) -> None:
super().__init__(name, type_, class_, ttl, created)
self.alias = alias
self._hash = hash((self.key, type_, self.class_, alias))
@property
def max_size_compressed(self) -> int:
"""Maximum size of the record in the packet assuming the name has been compressed."""
return (
_BASE_MAX_SIZE
+ _NAME_COMPRESSION_MIN_SIZE
+ (len(self.alias) - len(self.name))
+ _NAME_COMPRESSION_MIN_SIZE
)
def write(self, out: 'DNSOutgoing') -> None:
"""Used in constructing an outgoing packet"""
out.write_name(self.alias)
def __eq__(self, other: Any) -> bool:
"""Tests equality on alias"""
return (
isinstance(other, DNSPointer)
and self.alias == other.alias
and dns_entry_matches(other, self.key, self.type, self.class_)
)
def __hash__(self) -> int:
"""Hash to compare like DNSPointer."""
return self._hash
def __repr__(self) -> str:
"""String representation"""
return self.to_string(self.alias)
class DNSText(DNSRecord):
"""A DNS text record"""
__slots__ = ('_hash', 'text')
def __init__(
self, name: str, type_: int, class_: int, ttl: int, text: bytes, created: Optional[float] = None
) -> None:
assert isinstance(text, (bytes, type(None)))
super().__init__(name, type_, class_, ttl, created)
self.text = text
self._hash = hash((self.key, type_, self.class_, text))
def write(self, out: 'DNSOutgoing') -> None:
"""Used in constructing an outgoing packet"""
out.write_string(self.text)
def __hash__(self) -> int:
"""Hash to compare like DNSText."""
return self._hash
def __eq__(self, other: Any) -> bool:
"""Tests equality on text"""
return (
isinstance(other, DNSText)
and self.text == other.text
and dns_entry_matches(other, self.key, self.type, self.class_)
)
def __repr__(self) -> str:
"""String representation"""
if len(self.text) > 10:
return self.to_string(self.text[:7]) + "..."
return self.to_string(self.text)
class DNSService(DNSRecord):
"""A DNS service record"""
__slots__ = ('_hash', 'priority', 'weight', 'port', 'server', 'server_key')
def __init__(
self,
name: str,
type_: int,
class_: int,
ttl: Union[float, int],
priority: int,
weight: int,
port: int,
server: str,
created: Optional[float] = None,
) -> None:
super().__init__(name, type_, class_, ttl, created)
self.priority = priority
self.weight = weight
self.port = port
self.server = server
self.server_key = server.lower()
self._hash = hash((self.key, type_, self.class_, priority, weight, port, server))
def write(self, out: 'DNSOutgoing') -> None:
"""Used in constructing an outgoing packet"""
out.write_short(self.priority)
out.write_short(self.weight)
out.write_short(self.port)
out.write_name(self.server)
def __eq__(self, other: Any) -> bool:
"""Tests equality on priority, weight, port and server"""
return (
isinstance(other, DNSService)
and self.priority == other.priority
and self.weight == other.weight
and self.port == other.port
and self.server == other.server
and dns_entry_matches(other, self.key, self.type, self.class_)
)
def __hash__(self) -> int:
"""Hash to compare like DNSService."""
return self._hash
def __repr__(self) -> str:
"""String representation"""
return self.to_string(f"{self.server}:{self.port}")
class DNSNsec(DNSRecord):
"""A DNS NSEC record"""
__slots__ = ('_hash', 'next_name', 'rdtypes')
def __init__(
self,
name: str,
type_: int,
class_: int,
ttl: int,
next_name: str,
rdtypes: List[int],
created: Optional[float] = None,
) -> None:
super().__init__(name, type_, class_, ttl, created)
self.next_name = next_name
self.rdtypes = sorted(rdtypes)
self._hash = hash((self.key, type_, self.class_, next_name, *self.rdtypes))
def write(self, out: 'DNSOutgoing') -> None:
"""Used in constructing an outgoing packet."""
bitmap = bytearray(b'\0' * 32)
for rdtype in self.rdtypes:
if rdtype > 255: # mDNS only supports window 0
continue
offset = rdtype % 256
byte = offset // 8
total_octets = byte + 1
bitmap[byte] |= 0x80 >> (offset % 8)
out_bytes = bytes(bitmap[0:total_octets])
out.write_name(self.next_name)
out.write_short(0)
out.write_short(len(out_bytes))
out.write_string(out_bytes)
def __eq__(self, other: Any) -> bool:
"""Tests equality on cpu and os"""
return (
isinstance(other, DNSNsec)
and self.next_name == other.next_name
and self.rdtypes == other.rdtypes
and dns_entry_matches(other, self.key, self.type, self.class_)
)
def __hash__(self) -> int:
"""Hash to compare like DNSNSec."""
return self._hash
def __repr__(self) -> str:
"""String representation"""
return self.to_string(
self.next_name + "," + "|".join([self.get_type(type_) for type_ in self.rdtypes])
)
class DNSRRSet:
"""A set of dns records independent of the ttl."""
__slots__ = ('_records', '_lookup')
def __init__(self, records: Iterable[DNSRecord]) -> None:
"""Create an RRset from records."""
self._records = records
self._lookup: Optional[Dict[DNSRecord, DNSRecord]] = None
@property
def lookup(self) -> Dict[DNSRecord, DNSRecord]:
if self._lookup is None:
# Build the hash table so we can lookup the record independent of the ttl
self._lookup = {record: record for record in self._records}
return self._lookup
def suppresses(self, record: DNSRecord) -> bool:
"""Returns true if any answer in the rrset can suffice for the
information held in this record."""
other = self.lookup.get(record)
return bool(other and other.ttl > (record.ttl / 2))
def __contains__(self, record: DNSRecord) -> bool:
"""Returns true if the rrset contains the record."""
return record in self.lookup
0707010000003A000081A4000000000000000000000001631651AD00000877000000000000000000000000000000000000002F00000000python-zeroconf-0.39.1/zeroconf/_exceptions.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
class Error(Exception):
"""Base class for all zeroconf exceptions."""
class IncomingDecodeError(Error):
"""Exception when there is invalid data in an incoming packet."""
class NonUniqueNameException(Error):
"""Exception when the name is already registered."""
class NamePartTooLongException(Error):
"""Exception when the name is too long."""
class AbstractMethodException(Error):
"""Exception when a required method is not implemented."""
class BadTypeInNameException(Error):
"""Exception when the type in a name is invalid."""
class ServiceNameAlreadyRegistered(Error):
"""Exception when a service name is already registered."""
class EventLoopBlocked(Error):
"""Exception when the event loop is blocked.
This exception is never expected to be thrown
during normal operation. It should only happen
when the cpu is maxed out or there is something blocking
the event loop.
"""
class NotRunningException(Error):
"""Exception when an action is called with a zeroconf instance that is not running.
The instance may not be running because it was already shutdown
or startup has failed in some unexpected way.
"""
0707010000003B000081A4000000000000000000000001631651AD00006452000000000000000000000000000000000000002D00000000python-zeroconf-0.39.1/zeroconf/_handlers.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import itertools
import random
from collections import deque
from typing import Dict, Iterable, List, NamedTuple, Optional, Set, TYPE_CHECKING, Tuple, Union, cast
from ._cache import DNSCache, _UniqueRecordsType
from ._dns import DNSAddress, DNSNsec, DNSPointer, DNSQuestion, DNSRRSet, DNSRecord
from ._history import QuestionHistory
from ._logger import log
from ._protocol.incoming import DNSIncoming
from ._protocol.outgoing import DNSOutgoing
from ._services.info import ServiceInfo
from ._services.registry import ServiceRegistry
from ._updates import RecordUpdate, RecordUpdateListener
from ._utils.time import current_time_millis, millis_to_seconds
from .const import (
_CLASS_IN,
_CLASS_UNIQUE,
_DNS_OTHER_TTL,
_DNS_PTR_MIN_TTL,
_FLAGS_AA,
_FLAGS_QR_RESPONSE,
_ONE_SECOND,
_SERVICE_TYPE_ENUMERATION_NAME,
_TYPE_A,
_TYPE_AAAA,
_TYPE_ANY,
_TYPE_NSEC,
_TYPE_PTR,
_TYPE_SRV,
_TYPE_TXT,
)
if TYPE_CHECKING:
from ._core import Zeroconf
_AnswerWithAdditionalsType = Dict[DNSRecord, Set[DNSRecord]]
_MULTICAST_DELAY_RANDOM_INTERVAL = (20, 120)
_ADDRESS_RECORD_TYPES = {_TYPE_A, _TYPE_AAAA}
_RESPOND_IMMEDIATE_TYPES = {_TYPE_NSEC, _TYPE_SRV, *_ADDRESS_RECORD_TYPES}
class QuestionAnswers(NamedTuple):
ucast: _AnswerWithAdditionalsType
mcast_now: _AnswerWithAdditionalsType
mcast_aggregate: _AnswerWithAdditionalsType
mcast_aggregate_last_second: _AnswerWithAdditionalsType
class AnswerGroup(NamedTuple):
"""A group of answers scheduled to be sent at the same time."""
send_after: float # Must be sent after this time
send_before: float # Must be sent before this time
answers: _AnswerWithAdditionalsType
def _message_is_probe(msg: DNSIncoming) -> bool:
return msg.num_authorities > 0
def construct_nsec_record(name: str, types: List[int], now: float) -> DNSNsec:
"""Construct an NSEC record for name and a list of dns types.
This function should only be used for SRV/A/AAAA records
which have a TTL of _DNS_OTHER_TTL
"""
return DNSNsec(name, _TYPE_NSEC, _CLASS_IN | _CLASS_UNIQUE, _DNS_OTHER_TTL, name, types, created=now)
def construct_outgoing_multicast_answers(answers: _AnswerWithAdditionalsType) -> DNSOutgoing:
"""Add answers and additionals to a DNSOutgoing."""
out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA, multicast=True)
_add_answers_additionals(out, answers)
return out
def construct_outgoing_unicast_answers(
answers: _AnswerWithAdditionalsType, ucast_source: bool, questions: List[DNSQuestion], id_: int
) -> DNSOutgoing:
"""Add answers and additionals to a DNSOutgoing."""
out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA, multicast=False, id_=id_)
# Adding the questions back when the source is legacy unicast behavior
if ucast_source:
for question in questions:
out.add_question(question)
_add_answers_additionals(out, answers)
return out
def _add_answers_additionals(out: DNSOutgoing, answers: _AnswerWithAdditionalsType) -> None:
# Find additionals and suppress any additionals that are already in answers
sending: Set[DNSRecord] = set(answers.keys())
# Answers are sorted to group names together to increase the chance
# that similar names will end up in the same packet and can reduce the
# overall size of the outgoing response via name compression
for answer, additionals in sorted(answers.items(), key=lambda kv: kv[0].name):
out.add_answer_at_time(answer, 0)
for additional in additionals:
if additional not in sending:
out.add_additional_answer(additional)
sending.add(additional)
def sanitize_incoming_record(record: DNSRecord) -> None:
"""Protect zeroconf from records that can cause denial of service.
We enforce a minimum TTL for PTR records to avoid
ServiceBrowsers generating excessive queries refresh queries.
Apple uses a 15s minimum TTL, however we do not have the same
level of rate limit and safe guards so we use 1/4 of the recommended value.
"""
if record.ttl and record.ttl < _DNS_PTR_MIN_TTL and isinstance(record, DNSPointer):
log.debug(
"Increasing effective ttl of %s to minimum of %s to protect against excessive refreshes.",
record,
_DNS_PTR_MIN_TTL,
)
record.set_created_ttl(record.created, _DNS_PTR_MIN_TTL)
class _QueryResponse:
"""A pair for unicast and multicast DNSOutgoing responses."""
def __init__(self, cache: DNSCache, msgs: List[DNSIncoming]) -> None:
"""Build a query response."""
self._is_probe = any(_message_is_probe(msg) for msg in msgs)
self._msg = msgs[0]
self._now = self._msg.now
self._cache = cache
self._additionals: _AnswerWithAdditionalsType = {}
self._ucast: Set[DNSRecord] = set()
self._mcast_now: Set[DNSRecord] = set()
self._mcast_aggregate: Set[DNSRecord] = set()
self._mcast_aggregate_last_second: Set[DNSRecord] = set()
def add_qu_question_response(self, answers: _AnswerWithAdditionalsType) -> None:
"""Generate a response to a multicast QU query."""
for record, additionals in answers.items():
self._additionals[record] = additionals
if self._is_probe:
self._ucast.add(record)
if not self._has_mcast_within_one_quarter_ttl(record):
self._mcast_now.add(record)
elif not self._is_probe:
self._ucast.add(record)
def add_ucast_question_response(self, answers: _AnswerWithAdditionalsType) -> None:
"""Generate a response to a unicast query."""
self._additionals.update(answers)
self._ucast.update(answers.keys())
def add_mcast_question_response(self, answers: _AnswerWithAdditionalsType) -> None:
"""Generate a response to a multicast query."""
self._additionals.update(answers)
for answer in answers:
if self._is_probe:
self._mcast_now.add(answer)
continue
if self._has_mcast_record_in_last_second(answer):
self._mcast_aggregate_last_second.add(answer)
elif len(self._msg.questions) == 1 and self._msg.questions[0].type in _RESPOND_IMMEDIATE_TYPES:
self._mcast_now.add(answer)
else:
self._mcast_aggregate.add(answer)
def _generate_answers_with_additionals(self, rrset: Set[DNSRecord]) -> _AnswerWithAdditionalsType:
"""Create answers with additionals from an rrset."""
return {record: self._additionals[record] for record in rrset}
def answers(
self,
) -> QuestionAnswers:
"""Return answer sets that will be queued."""
return QuestionAnswers(
self._generate_answers_with_additionals(self._ucast),
self._generate_answers_with_additionals(self._mcast_now),
self._generate_answers_with_additionals(self._mcast_aggregate),
self._generate_answers_with_additionals(self._mcast_aggregate_last_second),
)
def _has_mcast_within_one_quarter_ttl(self, record: DNSRecord) -> bool:
"""Check to see if a record has been mcasted recently.
https://datatracker.ietf.org/doc/html/rfc6762#section-5.4
When receiving a question with the unicast-response bit set, a
responder SHOULD usually respond with a unicast packet directed back
to the querier. However, if the responder has not multicast that
record recently (within one quarter of its TTL), then the responder
SHOULD instead multicast the response so as to keep all the peer
caches up to date
"""
maybe_entry = self._cache.async_get_unique(cast(_UniqueRecordsType, record))
return bool(maybe_entry and maybe_entry.is_recent(self._now))
def _has_mcast_record_in_last_second(self, record: DNSRecord) -> bool:
"""Check if an answer was seen in the last second.
Protect the network against excessive packet flooding
https://datatracker.ietf.org/doc/html/rfc6762#section-14
"""
maybe_entry = self._cache.async_get_unique(cast(_UniqueRecordsType, record))
return bool(maybe_entry and self._now - maybe_entry.created < _ONE_SECOND)
def _get_address_and_nsec_records(service: ServiceInfo, now: float) -> Set[DNSRecord]:
"""Build a set of address records and NSEC records for non-present record types."""
seen_types: Set[int] = set()
records: Set[DNSRecord] = set()
for dns_address in service.dns_addresses(created=now):
seen_types.add(dns_address.type)
records.add(dns_address)
missing_types: Set[int] = _ADDRESS_RECORD_TYPES - seen_types
if missing_types:
records.add(construct_nsec_record(service.server, list(missing_types), now))
return records
class QueryHandler:
"""Query the ServiceRegistry."""
def __init__(self, registry: ServiceRegistry, cache: DNSCache, question_history: QuestionHistory) -> None:
"""Init the query handler."""
self.registry = registry
self.cache = cache
self.question_history = question_history
def _add_service_type_enumeration_query_answers(
self, answer_set: _AnswerWithAdditionalsType, known_answers: DNSRRSet, now: float
) -> None:
"""Provide an answer to a service type enumeration query.
https://datatracker.ietf.org/doc/html/rfc6763#section-9
"""
for stype in self.registry.async_get_types():
dns_pointer = DNSPointer(
_SERVICE_TYPE_ENUMERATION_NAME, _TYPE_PTR, _CLASS_IN, _DNS_OTHER_TTL, stype, now
)
if not known_answers.suppresses(dns_pointer):
answer_set[dns_pointer] = set()
def _add_pointer_answers(
self, name: str, answer_set: _AnswerWithAdditionalsType, known_answers: DNSRRSet, now: float
) -> None:
"""Answer PTR/ANY question."""
for service in self.registry.async_get_infos_type(name):
# Add recommended additional answers according to
# https://tools.ietf.org/html/rfc6763#section-12.1.
dns_pointer = service.dns_pointer(created=now)
if known_answers.suppresses(dns_pointer):
continue
additionals: Set[DNSRecord] = {service.dns_service(created=now), service.dns_text(created=now)}
additionals |= _get_address_and_nsec_records(service, now)
answer_set[dns_pointer] = additionals
def _add_address_answers(
self,
name: str,
answer_set: _AnswerWithAdditionalsType,
known_answers: DNSRRSet,
now: float,
type_: int,
) -> None:
"""Answer A/AAAA/ANY question."""
for service in self.registry.async_get_infos_server(name):
answers: List[DNSAddress] = []
additionals: Set[DNSRecord] = set()
seen_types: Set[int] = set()
for dns_address in service.dns_addresses(created=now):
seen_types.add(dns_address.type)
if dns_address.type != type_:
additionals.add(dns_address)
elif not known_answers.suppresses(dns_address):
answers.append(dns_address)
missing_types: Set[int] = _ADDRESS_RECORD_TYPES - seen_types
if answers:
if missing_types:
additionals.add(construct_nsec_record(service.server, list(missing_types), now))
for answer in answers:
answer_set[answer] = additionals
elif type_ in missing_types:
answer_set[construct_nsec_record(service.server, list(missing_types), now)] = set()
def _answer_question(
self,
question: DNSQuestion,
known_answers: DNSRRSet,
now: float,
) -> _AnswerWithAdditionalsType:
answer_set: _AnswerWithAdditionalsType = {}
if question.type == _TYPE_PTR and question.name.lower() == _SERVICE_TYPE_ENUMERATION_NAME:
self._add_service_type_enumeration_query_answers(answer_set, known_answers, now)
return answer_set
type_ = question.type
if type_ in (_TYPE_PTR, _TYPE_ANY):
self._add_pointer_answers(question.name, answer_set, known_answers, now)
if type_ in (_TYPE_A, _TYPE_AAAA, _TYPE_ANY):
self._add_address_answers(question.name, answer_set, known_answers, now, type_)
if type_ in (_TYPE_SRV, _TYPE_TXT, _TYPE_ANY):
service = self.registry.async_get_info_name(question.name)
if service is not None:
if type_ in (_TYPE_SRV, _TYPE_ANY):
# Add recommended additional answers according to
# https://tools.ietf.org/html/rfc6763#section-12.2.
dns_service = service.dns_service(created=now)
if not known_answers.suppresses(dns_service):
answer_set[dns_service] = _get_address_and_nsec_records(service, now)
if type_ in (_TYPE_TXT, _TYPE_ANY):
dns_text = service.dns_text(created=now)
if not known_answers.suppresses(dns_text):
answer_set[dns_text] = set()
return answer_set
def async_response( # pylint: disable=unused-argument
self, msgs: List[DNSIncoming], ucast_source: bool
) -> QuestionAnswers:
"""Deal with incoming query packets. Provides a response if possible.
This function must be run in the event loop as it is not
threadsafe.
"""
known_answers = DNSRRSet(
itertools.chain.from_iterable(msg.answers for msg in msgs if not _message_is_probe(msg))
)
query_res = _QueryResponse(self.cache, msgs)
for msg in msgs:
for question in msg.questions:
if not question.unicast:
self.question_history.add_question_at_time(question, msg.now, set(known_answers.lookup))
answer_set = self._answer_question(question, known_answers, msg.now)
if not ucast_source and question.unicast:
query_res.add_qu_question_response(answer_set)
continue
if ucast_source:
query_res.add_ucast_question_response(answer_set)
# We always multicast as well even if its a unicast
# source as long as we haven't done it recently (75% of ttl)
query_res.add_mcast_question_response(answer_set)
return query_res.answers()
class RecordManager:
"""Process records into the cache and notify listeners."""
def __init__(self, zeroconf: 'Zeroconf') -> None:
"""Init the record manager."""
self.zc = zeroconf
self.cache = zeroconf.cache
self.listeners: List[RecordUpdateListener] = []
def async_updates(self, now: float, records: List[RecordUpdate]) -> None:
"""Used to notify listeners of new information that has updated
a record.
This method must be called before the cache is updated.
This method will be run in the event loop.
"""
for listener in self.listeners:
listener.async_update_records(self.zc, now, records)
def async_updates_complete(self, notify: bool) -> None:
"""Used to notify listeners of new information that has updated
a record.
This method must be called after the cache is updated.
This method will be run in the event loop.
"""
for listener in self.listeners:
listener.async_update_records_complete()
if notify:
self.zc.async_notify_all()
def async_updates_from_response(self, msg: DNSIncoming) -> None:
"""Deal with incoming response packets. All answers
are held in the cache, and listeners are notified.
This function must be run in the event loop as it is not
threadsafe.
"""
updates: List[RecordUpdate] = []
address_adds: List[DNSAddress] = []
other_adds: List[DNSRecord] = []
removes: Set[DNSRecord] = set()
now = msg.now
unique_types: Set[Tuple[str, int, int]] = set()
for record in msg.answers:
sanitize_incoming_record(record)
if record.unique: # https://tools.ietf.org/html/rfc6762#section-10.2
unique_types.add((record.name, record.type, record.class_))
maybe_entry = self.cache.async_get_unique(cast(_UniqueRecordsType, record))
if not record.is_expired(now):
if maybe_entry is not None:
maybe_entry.reset_ttl(record)
else:
if isinstance(record, DNSAddress):
address_adds.append(record)
else:
other_adds.append(record)
updates.append(RecordUpdate(record, maybe_entry))
# This is likely a goodbye since the record is
# expired and exists in the cache
elif maybe_entry is not None:
updates.append(RecordUpdate(record, maybe_entry))
removes.add(record)
if unique_types:
self._async_mark_unique_cached_records_older_than_1s_to_expire(unique_types, msg.answers, now)
if updates:
self.async_updates(now, updates)
# The cache adds must be processed AFTER we trigger
# the updates since we compare existing data
# with the new data and updating the cache
# ahead of update_record will cause listeners
# to miss changes
#
# We must process address adds before non-addresses
# otherwise a fetch of ServiceInfo may miss an address
# because it thinks the cache is complete
#
# The cache is processed under the context manager to ensure
# that any ServiceBrowser that is going to call
# zc.get_service_info will see the cached value
# but ONLY after all the record updates have been
# processsed.
new = False
if other_adds or address_adds:
new = self.cache.async_add_records(itertools.chain(address_adds, other_adds))
# Removes are processed last since
# ServiceInfo could generate an un-needed query
# because the data was not yet populated.
if removes:
self.cache.async_remove_records(removes)
if updates:
self.async_updates_complete(new)
def _async_mark_unique_cached_records_older_than_1s_to_expire(
self, unique_types: Set[Tuple[str, int, int]], answers: Iterable[DNSRecord], now: float
) -> None:
# rfc6762#section-10.2 para 2
# Since unique is set, all old records with that name, rrtype,
# and rrclass that were received more than one second ago are declared
# invalid, and marked to expire from the cache in one second.
answers_rrset = DNSRRSet(answers)
for name, type_, class_ in unique_types:
for entry in self.cache.async_all_by_details(name, type_, class_):
if (now - entry.created > _ONE_SECOND) and entry not in answers_rrset:
# Expire in 1s
entry.set_created_ttl(now, 1)
def async_add_listener(
self, listener: RecordUpdateListener, question: Optional[Union[DNSQuestion, List[DNSQuestion]]]
) -> None:
"""Adds a listener for a given question. The listener will have
its update_record method called when information is available to
answer the question(s).
This function is not threadsafe and must be called in the eventloop.
"""
if not isinstance(listener, RecordUpdateListener):
log.error(
"listeners passed to async_add_listener must inherit from RecordUpdateListener;"
" In the future this will fail"
)
self.listeners.append(listener)
if question is None:
return
questions = [question] if isinstance(question, DNSQuestion) else question
assert self.zc.loop is not None
self._async_update_matching_records(listener, questions)
def _async_update_matching_records(
self, listener: RecordUpdateListener, questions: List[DNSQuestion]
) -> None:
"""Calls back any existing entries in the cache that answer the question.
This function must be run from the event loop.
"""
now = current_time_millis()
records: List[RecordUpdate] = [
RecordUpdate(record, None)
for question in questions
for record in self.cache.async_entries_with_name(question.name)
if not record.is_expired(now) and question.answered_by(record)
]
if not records:
return
listener.async_update_records(self.zc, now, records)
listener.async_update_records_complete()
self.zc.async_notify_all()
def async_remove_listener(self, listener: RecordUpdateListener) -> None:
"""Removes a listener.
This function is not threadsafe and must be called in the eventloop.
"""
try:
self.listeners.remove(listener)
self.zc.async_notify_all()
except ValueError as e:
log.exception('Failed to remove listener: %r', e)
class MulticastOutgoingQueue:
"""An outgoing queue used to aggregate multicast responses."""
def __init__(self, zeroconf: 'Zeroconf', additional_delay: int, max_aggregation_delay: int) -> None:
self.zc = zeroconf
self.queue: deque = deque()
# Additional delay is used to implement
# Protect the network against excessive packet flooding
# https://datatracker.ietf.org/doc/html/rfc6762#section-14
self.additional_delay = additional_delay
self.aggregation_delay = max_aggregation_delay
def async_add(self, now: float, answers: _AnswerWithAdditionalsType) -> None:
"""Add a group of answers with additionals to the outgoing queue."""
assert self.zc.loop is not None
random_delay = random.randint(*_MULTICAST_DELAY_RANDOM_INTERVAL) + self.additional_delay
send_after = now + random_delay
send_before = now + self.aggregation_delay + self.additional_delay
if len(self.queue):
# If we calculate a random delay for the send after time
# that is less than the last group scheduled to go out,
# we instead add the answers to the last group as this
# allows aggregating additonal responses
last_group = self.queue[-1]
if send_after <= last_group.send_after:
last_group.answers.update(answers)
return
else:
self.zc.loop.call_later(millis_to_seconds(random_delay), self.async_ready)
self.queue.append(AnswerGroup(send_after, send_before, answers))
def _remove_answers_from_queue(self, answers: _AnswerWithAdditionalsType) -> None:
"""Remove a set of answers from the outgoing queue."""
for pending in self.queue:
for record in answers:
pending.answers.pop(record, None)
def async_ready(self) -> None:
"""Process anything in the queue that is ready."""
assert self.zc.loop is not None
now = current_time_millis()
if len(self.queue) > 1 and self.queue[0].send_before > now:
# There is more than one answer in the queue,
# delay until we have to send it (first answer group reaches send_before)
self.zc.loop.call_later(millis_to_seconds(self.queue[0].send_before - now), self.async_ready)
return
answers: _AnswerWithAdditionalsType = {}
# Add all groups that can be sent now
while len(self.queue) and self.queue[0].send_after <= now:
answers.update(self.queue.popleft().answers)
if len(self.queue):
# If there are still groups in the queue that are not ready to send
# be sure we schedule them to go out later
self.zc.loop.call_later(millis_to_seconds(self.queue[0].send_after - now), self.async_ready)
if answers:
# If we have the same answer scheduled to go out, remove them
self._remove_answers_from_queue(answers)
self.zc.async_send(construct_outgoing_multicast_answers(answers))
0707010000003C000081A4000000000000000000000001631651AD00000B64000000000000000000000000000000000000002C00000000python-zeroconf-0.39.1/zeroconf/_history.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
from typing import Dict, Set, Tuple
from ._dns import DNSQuestion, DNSRecord
from .const import _DUPLICATE_QUESTION_INTERVAL
# The QuestionHistory is used to implement Duplicate Question Suppression
# https://datatracker.ietf.org/doc/html/rfc6762#section-7.3
class QuestionHistory:
def __init__(self) -> None:
self._history: Dict[DNSQuestion, Tuple[float, Set[DNSRecord]]] = {}
def add_question_at_time(self, question: DNSQuestion, now: float, known_answers: Set[DNSRecord]) -> None:
"""Remember a question with known answers."""
self._history[question] = (now, known_answers)
def suppresses(self, question: DNSQuestion, now: float, known_answers: Set[DNSRecord]) -> bool:
"""Check to see if a question should be suppressed.
https://datatracker.ietf.org/doc/html/rfc6762#section-7.3
When multiple queriers on the network are querying
for the same resource records, there is no need for them to all be
repeatedly asking the same question.
"""
previous_question = self._history.get(question)
# There was not previous question in the history
if not previous_question:
return False
than, previous_known_answers = previous_question
# The last question was older than 999ms
if now - than > _DUPLICATE_QUESTION_INTERVAL:
return False
# The last question has more known answers than
# we knew so we have to ask
if previous_known_answers - known_answers:
return False
return True
def async_expire(self, now: float) -> None:
"""Expire the history of old questions."""
removes = [
question
for question, now_known_answers in self._history.items()
if now - now_known_answers[0] > _DUPLICATE_QUESTION_INTERVAL
]
for question in removes:
del self._history[question]
0707010000003D000081A4000000000000000000000001631651AD00000BA4000000000000000000000000000000000000002B00000000python-zeroconf-0.39.1/zeroconf/_logger.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
)
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import logging
import sys
from typing import Any, Dict, Union, cast
log = logging.getLogger(__name__.split('.', maxsplit=1)[0])
log.addHandler(logging.NullHandler())
def set_logger_level_if_unset() -> None:
if log.level == logging.NOTSET:
log.setLevel(logging.WARN)
set_logger_level_if_unset()
class QuietLogger:
_seen_logs: Dict[str, Union[int, tuple]] = {}
@classmethod
def log_exception_warning(cls, *logger_data: Any) -> None:
exc_info = sys.exc_info()
exc_str = str(exc_info[1])
if exc_str not in cls._seen_logs:
# log at warning level the first time this is seen
cls._seen_logs[exc_str] = exc_info
logger = log.warning
else:
logger = log.debug
logger(*(logger_data or ['Exception occurred']), exc_info=True)
@classmethod
def log_exception_debug(cls, *logger_data: Any) -> None:
log_exc_info = False
exc_info = sys.exc_info()
exc_str = str(exc_info[1])
if exc_str not in cls._seen_logs:
# log the trace only on the first time
cls._seen_logs[exc_str] = exc_info
log_exc_info = True
log.debug(*(logger_data or ['Exception occurred']), exc_info=log_exc_info)
@classmethod
def log_warning_once(cls, *args: Any) -> None:
msg_str = args[0]
if msg_str not in cls._seen_logs:
cls._seen_logs[msg_str] = 0
logger = log.warning
else:
logger = log.debug
cls._seen_logs[msg_str] = cast(int, cls._seen_logs[msg_str]) + 1
logger(*args)
@classmethod
def log_exception_once(cls, exc: Exception, *args: Any) -> None:
msg_str = args[0]
if msg_str not in cls._seen_logs:
cls._seen_logs[msg_str] = 0
logger = log.warning
else:
logger = log.debug
cls._seen_logs[msg_str] = cast(int, cls._seen_logs[msg_str]) + 1
logger(*args, exc_info=exc)
0707010000003E000041ED000000000000000000000002631651AD00000000000000000000000000000000000000000000002A00000000python-zeroconf-0.39.1/zeroconf/_protocol0707010000003F000081A4000000000000000000000001631651AD000006BD000000000000000000000000000000000000003600000000python-zeroconf-0.39.1/zeroconf/_protocol/__init__.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
from ..const import (
_FLAGS_QR_MASK,
_FLAGS_QR_QUERY,
_FLAGS_QR_RESPONSE,
_FLAGS_TC,
)
class DNSMessage:
"""A base class for DNS messages."""
__slots__ = ('flags',)
def __init__(self, flags: int) -> None:
"""Construct a DNS message."""
self.flags = flags
def is_query(self) -> bool:
"""Returns true if this is a query."""
return (self.flags & _FLAGS_QR_MASK) == _FLAGS_QR_QUERY
def is_response(self) -> bool:
"""Returns true if this is a response."""
return (self.flags & _FLAGS_QR_MASK) == _FLAGS_QR_RESPONSE
@property
def truncated(self) -> bool:
"""Returns true if this is a truncated."""
return (self.flags & _FLAGS_TC) == _FLAGS_TC
07070100000040000081A4000000000000000000000001631651AD00002EFC000000000000000000000000000000000000003600000000python-zeroconf-0.39.1/zeroconf/_protocol/incoming.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import struct
from typing import Callable, Dict, List, Optional, Set, Tuple, cast
from . import DNSMessage
from .._dns import DNSAddress, DNSHinfo, DNSNsec, DNSPointer, DNSQuestion, DNSRecord, DNSService, DNSText
from .._exceptions import IncomingDecodeError
from .._logger import QuietLogger, log
from .._utils.time import current_time_millis
from ..const import (
_TYPES,
_TYPE_A,
_TYPE_AAAA,
_TYPE_CNAME,
_TYPE_HINFO,
_TYPE_NSEC,
_TYPE_PTR,
_TYPE_SRV,
_TYPE_TXT,
)
DNS_COMPRESSION_HEADER_LEN = 1
DNS_COMPRESSION_POINTER_LEN = 2
MAX_DNS_LABELS = 128
MAX_NAME_LENGTH = 253
DECODE_EXCEPTIONS = (IndexError, struct.error, IncomingDecodeError)
UNPACK_3H = struct.Struct(b'!3H').unpack
UNPACK_6H = struct.Struct(b'!6H').unpack
UNPACK_HH = struct.Struct(b'!HH').unpack
UNPACK_HHiH = struct.Struct(b'!HHiH').unpack
class DNSIncoming(DNSMessage, QuietLogger):
"""Object representation of an incoming DNS packet"""
__slots__ = (
'offset',
'data',
'data_len',
'name_cache',
'questions',
'_answers',
'id',
'num_questions',
'num_answers',
'num_authorities',
'num_additionals',
'valid',
'now',
'scope_id',
'source',
)
def __init__(
self,
data: bytes,
source: Optional[Tuple[str, int]] = None,
scope_id: Optional[int] = None,
now: Optional[float] = None,
) -> None:
"""Constructor from string holding bytes of packet"""
super().__init__(0)
self.offset = 0
self.data = data
self.data_len = len(data)
self.name_cache: Dict[int, List[str]] = {}
self.questions: List[DNSQuestion] = []
self._answers: List[DNSRecord] = []
self.id = 0
self.num_questions = 0
self.num_answers = 0
self.num_authorities = 0
self.num_additionals = 0
self.valid = False
self._read_others = False
self.now = now or current_time_millis()
self.source = source
self.scope_id = scope_id
self._parse_data(self._initial_parse)
def _initial_parse(self) -> None:
"""Parse the data needed to initalize the packet object."""
self.read_header()
self.read_questions()
if not self.num_questions:
self.read_others()
self.valid = True
def _parse_data(self, parser_call: Callable) -> None:
"""Parse part of the packet and catch exceptions."""
try:
parser_call()
except DECODE_EXCEPTIONS:
self.log_exception_debug(
'Received invalid packet from %s at offset %d while unpacking %r',
self.source,
self.offset,
self.data,
)
@property
def answers(self) -> List[DNSRecord]:
"""Answers in the packet."""
if not self._read_others:
self._parse_data(self.read_others)
return self._answers
def __repr__(self) -> str:
return '<DNSIncoming:{%s}>' % ', '.join(
[
'id=%s' % self.id,
'flags=%s' % self.flags,
'truncated=%s' % self.truncated,
'n_q=%s' % self.num_questions,
'n_ans=%s' % self.num_answers,
'n_auth=%s' % self.num_authorities,
'n_add=%s' % self.num_additionals,
'questions=%s' % self.questions,
'answers=%s' % self.answers,
]
)
def unpack(self, unpacker: Callable[[bytes], tuple], length: int) -> tuple:
self.offset += length
return unpacker(self.data[self.offset - length : self.offset])
def read_header(self) -> None:
"""Reads header portion of packet"""
(
self.id,
self.flags,
self.num_questions,
self.num_answers,
self.num_authorities,
self.num_additionals,
) = self.unpack(UNPACK_6H, 12)
def read_questions(self) -> None:
"""Reads questions section of packet"""
self.questions = [
DNSQuestion(self.read_name(), *self.unpack(UNPACK_HH, 4)) for _ in range(self.num_questions)
]
def read_character_string(self) -> bytes:
"""Reads a character string from the packet"""
length = self.data[self.offset]
self.offset += 1
return self.read_string(length)
def read_string(self, length: int) -> bytes:
"""Reads a string of a given length from the packet"""
info = self.data[self.offset : self.offset + length]
self.offset += length
return info
def read_others(self) -> None:
"""Reads the answers, authorities and additionals section of the
packet"""
self._read_others = True
n = self.num_answers + self.num_authorities + self.num_additionals
for _ in range(n):
domain = self.read_name()
type_, class_, ttl, length = self.unpack(UNPACK_HHiH, 10)
end = self.offset + length
rec = None
try:
rec = self.read_record(domain, type_, class_, ttl, length)
except DECODE_EXCEPTIONS:
# Skip records that fail to decode if we know the length
# If the packet is really corrupt read_name and the unpack
# above would fail and hit the exception catch in read_others
self.offset = end
log.debug(
'Unable to parse; skipping record for %s with type %s at offset %d while unpacking %r',
domain,
_TYPES.get(type_, type_),
self.offset,
self.data,
exc_info=True,
)
if rec is not None:
self._answers.append(rec)
def read_record(self, domain: str, type_: int, class_: int, ttl: int, length: int) -> Optional[DNSRecord]:
"""Read known records types and skip unknown ones."""
if type_ == _TYPE_A:
return DNSAddress(domain, type_, class_, ttl, self.read_string(4), created=self.now)
if type_ in (_TYPE_CNAME, _TYPE_PTR):
return DNSPointer(domain, type_, class_, ttl, self.read_name(), self.now)
if type_ == _TYPE_TXT:
return DNSText(domain, type_, class_, ttl, self.read_string(length), self.now)
if type_ == _TYPE_SRV:
return DNSService(
domain,
type_,
class_,
ttl,
*cast(Tuple[int, int, int], self.unpack(UNPACK_3H, 6)),
self.read_name(),
self.now,
)
if type_ == _TYPE_HINFO:
return DNSHinfo(
domain,
type_,
class_,
ttl,
self.read_character_string().decode('utf-8'),
self.read_character_string().decode('utf-8'),
self.now,
)
if type_ == _TYPE_AAAA:
return DNSAddress(
domain, type_, class_, ttl, self.read_string(16), created=self.now, scope_id=self.scope_id
)
if type_ == _TYPE_NSEC:
name_start = self.offset
return DNSNsec(
domain,
type_,
class_,
ttl,
self.read_name(),
self.read_bitmap(name_start + length),
self.now,
)
# Try to ignore types we don't know about
# Skip the payload for the resource record so the next
# records can be parsed correctly
self.offset += length
return None
def read_bitmap(self, end: int) -> List[int]:
"""Reads an NSEC bitmap from the packet."""
rdtypes = []
while self.offset < end:
window = self.data[self.offset]
bitmap_length = self.data[self.offset + 1]
for i, byte in enumerate(self.data[self.offset + 2 : self.offset + 2 + bitmap_length]):
for bit in range(0, 8):
if byte & (0x80 >> bit):
rdtypes.append(bit + window * 256 + i * 8)
self.offset += 2 + bitmap_length
return rdtypes
def read_name(self) -> str:
"""Reads a domain name from the packet."""
labels: List[str] = []
seen_pointers: Set[int] = set()
self.offset = self._decode_labels_at_offset(self.offset, labels, seen_pointers)
name = ".".join(labels) + "."
if len(name) > MAX_NAME_LENGTH:
raise IncomingDecodeError(
f"DNS name {name} exceeds maximum length of {MAX_NAME_LENGTH} from {self.source}"
)
return name
def _decode_labels_at_offset(self, off: int, labels: List[str], seen_pointers: Set[int]) -> int:
# This is a tight loop that is called frequently, small optimizations can make a difference.
while off < self.data_len:
length = self.data[off]
if length == 0:
return off + DNS_COMPRESSION_HEADER_LEN
if length < 0x40:
label_idx = off + DNS_COMPRESSION_HEADER_LEN
labels.append(self.data[label_idx : label_idx + length].decode('utf-8', 'replace'))
off += DNS_COMPRESSION_HEADER_LEN + length
continue
if length < 0xC0:
raise IncomingDecodeError(
f"DNS compression type {length} is unknown at {off} from {self.source}"
)
# We have a DNS compression pointer
link = (length & 0x3F) * 256 + self.data[off + 1]
if link > self.data_len:
raise IncomingDecodeError(
f"DNS compression pointer at {off} points to {link} beyond packet from {self.source}"
)
if link == off:
raise IncomingDecodeError(
f"DNS compression pointer at {off} points to itself from {self.source}"
)
if link in seen_pointers:
raise IncomingDecodeError(
f"DNS compression pointer at {off} was seen again from {self.source}"
)
linked_labels = self.name_cache.get(link, [])
if not linked_labels:
seen_pointers.add(link)
self._decode_labels_at_offset(link, linked_labels, seen_pointers)
self.name_cache[link] = linked_labels
labels.extend(linked_labels)
if len(labels) > MAX_DNS_LABELS:
raise IncomingDecodeError(
f"Maximum dns labels reached while processing pointer at {off} from {self.source}"
)
return off + DNS_COMPRESSION_POINTER_LEN
raise IncomingDecodeError("Corrupt packet received while decoding name from {self.source}")
07070100000041000081A4000000000000000000000001631651AD0000430D000000000000000000000000000000000000003600000000python-zeroconf-0.39.1/zeroconf/_protocol/outgoing.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import enum
from typing import Dict, List, Optional, Sequence, Tuple, Union
from . import DNSMessage
from .incoming import DNSIncoming
from .._cache import DNSCache
from .._dns import DNSPointer, DNSQuestion, DNSRecord
from .._exceptions import NamePartTooLongException
from .._logger import log
from ..const import (
_CLASS_UNIQUE,
_DNS_PACKET_HEADER_LEN,
_FLAGS_TC,
_MAX_MSG_ABSOLUTE,
_MAX_MSG_TYPICAL,
)
class DNSOutgoing(DNSMessage):
"""Object representation of an outgoing packet"""
__slots__ = (
'finished',
'id',
'multicast',
'packets_data',
'names',
'data',
'size',
'allow_long',
'state',
'questions',
'answers',
'authorities',
'additionals',
)
def __init__(self, flags: int, multicast: bool = True, id_: int = 0) -> None:
super().__init__(flags)
self.finished = False
self.id = id_
self.multicast = multicast
self.packets_data: List[bytes] = []
# these 3 are per-packet -- see also _reset_for_next_packet()
self.names: Dict[str, int] = {}
self.data: List[bytes] = []
self.size: int = _DNS_PACKET_HEADER_LEN
self.allow_long: bool = True
self.state = self.State.init
self.questions: List[DNSQuestion] = []
self.answers: List[Tuple[DNSRecord, float]] = []
self.authorities: List[DNSPointer] = []
self.additionals: List[DNSRecord] = []
def _reset_for_next_packet(self) -> None:
self.names = {}
self.data = []
self.size = _DNS_PACKET_HEADER_LEN
self.allow_long = True
def __repr__(self) -> str:
return '<DNSOutgoing:{%s}>' % ', '.join(
[
'multicast=%s' % self.multicast,
'flags=%s' % self.flags,
'questions=%s' % self.questions,
'answers=%s' % self.answers,
'authorities=%s' % self.authorities,
'additionals=%s' % self.additionals,
]
)
class State(enum.Enum):
init = 0
finished = 1
def add_question(self, record: DNSQuestion) -> None:
"""Adds a question"""
self.questions.append(record)
def add_answer(self, inp: DNSIncoming, record: DNSRecord) -> None:
"""Adds an answer"""
if not record.suppressed_by(inp):
self.add_answer_at_time(record, 0)
def add_answer_at_time(self, record: Optional[DNSRecord], now: Union[float, int]) -> None:
"""Adds an answer if it does not expire by a certain time"""
if record is not None and (now == 0 or not record.is_expired(now)):
self.answers.append((record, now))
def add_authorative_answer(self, record: DNSPointer) -> None:
"""Adds an authoritative answer"""
self.authorities.append(record)
def add_additional_answer(self, record: DNSRecord) -> None:
"""Adds an additional answer
From: RFC 6763, DNS-Based Service Discovery, February 2013
12. DNS Additional Record Generation
DNS has an efficiency feature whereby a DNS server may place
additional records in the additional section of the DNS message.
These additional records are records that the client did not
explicitly request, but the server has reasonable grounds to expect
that the client might request them shortly, so including them can
save the client from having to issue additional queries.
This section recommends which additional records SHOULD be generated
to improve network efficiency, for both Unicast and Multicast DNS-SD
responses.
12.1. PTR Records
When including a DNS-SD Service Instance Enumeration or Selective
Instance Enumeration (subtype) PTR record in a response packet, the
server/responder SHOULD include the following additional records:
o The SRV record(s) named in the PTR rdata.
o The TXT record(s) named in the PTR rdata.
o All address records (type "A" and "AAAA") named in the SRV rdata.
12.2. SRV Records
When including an SRV record in a response packet, the
server/responder SHOULD include the following additional records:
o All address records (type "A" and "AAAA") named in the SRV rdata.
"""
self.additionals.append(record)
def add_question_or_one_cache(
self, cache: DNSCache, now: float, name: str, type_: int, class_: int
) -> None:
"""Add a question if it is not already cached."""
cached_entry = cache.get_by_details(name, type_, class_)
if not cached_entry:
self.add_question(DNSQuestion(name, type_, class_))
else:
self.add_answer_at_time(cached_entry, now)
def add_question_or_all_cache(
self, cache: DNSCache, now: float, name: str, type_: int, class_: int
) -> None:
"""Add a question if it is not already cached.
This is currently only used for IPv6 addresses.
"""
cached_entries = cache.get_all_by_details(name, type_, class_)
if not cached_entries:
self.add_question(DNSQuestion(name, type_, class_))
return
for cached_entry in cached_entries:
self.add_answer_at_time(cached_entry, now)
def _write_byte(self, value: int) -> None:
"""Writes a single byte to the packet"""
self.data.append(value.to_bytes(1, 'big'))
self.size += 1
def _insert_short_at_start(self, value: int) -> None:
"""Inserts an unsigned short at the start of the packet"""
self.data.insert(0, value.to_bytes(2, 'big'))
def _replace_short(self, index: int, value: int) -> None:
"""Replaces an unsigned short in a certain position in the packet"""
self.data[index] = value.to_bytes(2, 'big')
def write_short(self, value: int) -> None:
"""Writes an unsigned short to the packet"""
self.data.append(value.to_bytes(2, 'big'))
self.size += 2
def _write_int(self, value: Union[float, int]) -> None:
"""Writes an unsigned integer to the packet"""
self.data.append(int(value).to_bytes(4, 'big'))
self.size += 4
def write_string(self, value: bytes) -> None:
"""Writes a string to the packet"""
assert isinstance(value, bytes)
self.data.append(value)
self.size += len(value)
def _write_utf(self, s: str) -> None:
"""Writes a UTF-8 string of a given length to the packet"""
utfstr = s.encode('utf-8')
length = len(utfstr)
if length > 64:
raise NamePartTooLongException
self._write_byte(length)
self.write_string(utfstr)
def write_character_string(self, value: bytes) -> None:
assert isinstance(value, bytes)
length = len(value)
if length > 256:
raise NamePartTooLongException
self._write_byte(length)
self.write_string(value)
def write_name(self, name: str) -> None:
"""
Write names to packet
18.14. Name Compression
When generating Multicast DNS messages, implementations SHOULD use
name compression wherever possible to compress the names of resource
records, by replacing some or all of the resource record name with a
compact two-byte reference to an appearance of that data somewhere
earlier in the message [RFC1035].
"""
# split name into each label
name_length = None
if name.endswith('.'):
name = name[: len(name) - 1]
labels = name.split('.')
# Write each new label or a pointer to the existing
# on in the packet
start_size = self.size
for count in range(len(labels)):
label = name if count == 0 else '.'.join(labels[count:])
index = self.names.get(label)
if index:
# If part of the name already exists in the packet,
# create a pointer to it
self._write_byte((index >> 8) | 0xC0)
self._write_byte(index & 0xFF)
return
if name_length is None:
name_length = len(name.encode('utf-8'))
self.names[label] = start_size + name_length - len(label.encode('utf-8'))
self._write_utf(labels[count])
# this is the end of a name
self._write_byte(0)
def _write_question(self, question: DNSQuestion) -> bool:
"""Writes a question to the packet"""
start_data_length, start_size = len(self.data), self.size
self.write_name(question.name)
self.write_short(question.type)
self._write_record_class(question)
return self._check_data_limit_or_rollback(start_data_length, start_size)
def _write_record_class(self, record: Union[DNSQuestion, DNSRecord]) -> None:
"""Write out the record class including the unique/unicast (QU) bit."""
if record.unique and self.multicast:
self.write_short(record.class_ | _CLASS_UNIQUE)
else:
self.write_short(record.class_)
def _write_ttl(self, record: DNSRecord, now: float) -> None:
"""Write out the record ttl."""
self._write_int(record.ttl if now == 0 else record.get_remaining_ttl(now))
def _write_record(self, record: DNSRecord, now: float) -> bool:
"""Writes a record (answer, authoritative answer, additional) to
the packet. Returns True on success, or False if we did not
because the packet because the record does not fit."""
start_data_length, start_size = len(self.data), self.size
self.write_name(record.name)
self.write_short(record.type)
self._write_record_class(record)
self._write_ttl(record, now)
index = len(self.data)
self.write_short(0) # Will get replaced with the actual size
record.write(self)
# Adjust size for the short we will write before this record
length = sum(len(d) for d in self.data[index + 1 :])
# Here we replace the 0 length short we wrote
# before with the actual length
self._replace_short(index, length)
return self._check_data_limit_or_rollback(start_data_length, start_size)
def _check_data_limit_or_rollback(self, start_data_length: int, start_size: int) -> bool:
"""Check data limit, if we go over, then rollback and return False."""
len_limit = _MAX_MSG_ABSOLUTE if self.allow_long else _MAX_MSG_TYPICAL
self.allow_long = False
if self.size <= len_limit:
return True
log.debug("Reached data limit (size=%d) > (limit=%d) - rolling back", self.size, len_limit)
del self.data[start_data_length:]
self.size = start_size
rollback_names = [name for name, idx in self.names.items() if idx >= start_size]
for name in rollback_names:
del self.names[name]
return False
def _write_questions_from_offset(self, questions_offset: int) -> int:
questions_written = 0
for question in self.questions[questions_offset:]:
if not self._write_question(question):
break
questions_written += 1
return questions_written
def _write_answers_from_offset(self, answer_offset: int) -> int:
answers_written = 0
for answer, time_ in self.answers[answer_offset:]:
if not self._write_record(answer, time_):
break
answers_written += 1
return answers_written
def _write_records_from_offset(self, records: Sequence[DNSRecord], offset: int) -> int:
records_written = 0
for record in records[offset:]:
if not self._write_record(record, 0):
break
records_written += 1
return records_written
def _has_more_to_add(
self, questions_offset: int, answer_offset: int, authority_offset: int, additional_offset: int
) -> bool:
"""Check if all questions, answers, authority, and additionals have been written to the packet."""
return (
questions_offset < len(self.questions)
or answer_offset < len(self.answers)
or authority_offset < len(self.authorities)
or additional_offset < len(self.additionals)
)
def packets(self) -> List[bytes]:
"""Returns a list of bytestrings containing the packets' bytes
No further parts should be added to the packet once this
is done. The packets are each restricted to _MAX_MSG_TYPICAL
or less in length, except for the case of a single answer which
will be written out to a single oversized packet no more than
_MAX_MSG_ABSOLUTE in length (and hence will be subject to IP
fragmentation potentially)."""
if self.state == self.State.finished:
return self.packets_data
questions_offset = 0
answer_offset = 0
authority_offset = 0
additional_offset = 0
# we have to at least write out the question
first_time = True
while first_time or self._has_more_to_add(
questions_offset, answer_offset, authority_offset, additional_offset
):
first_time = False
log.debug(
"offsets = questions=%d, answers=%d, authorities=%d, additionals=%d",
questions_offset,
answer_offset,
authority_offset,
additional_offset,
)
log.debug(
"lengths = questions=%d, answers=%d, authorities=%d, additionals=%d",
len(self.questions),
len(self.answers),
len(self.authorities),
len(self.additionals),
)
questions_written = self._write_questions_from_offset(questions_offset)
answers_written = self._write_answers_from_offset(answer_offset)
authorities_written = self._write_records_from_offset(self.authorities, authority_offset)
additionals_written = self._write_records_from_offset(self.additionals, additional_offset)
self._insert_short_at_start(additionals_written)
self._insert_short_at_start(authorities_written)
self._insert_short_at_start(answers_written)
self._insert_short_at_start(questions_written)
questions_offset += questions_written
answer_offset += answers_written
authority_offset += authorities_written
additional_offset += additionals_written
log.debug(
"now offsets = questions=%d, answers=%d, authorities=%d, additionals=%d",
questions_offset,
answer_offset,
authority_offset,
additional_offset,
)
if self.is_query() and self._has_more_to_add(
questions_offset, answer_offset, authority_offset, additional_offset
):
# https://datatracker.ietf.org/doc/html/rfc6762#section-7.2
log.debug("Setting TC flag")
self._insert_short_at_start(self.flags | _FLAGS_TC)
else:
self._insert_short_at_start(self.flags)
if self.multicast:
self._insert_short_at_start(0)
else:
self._insert_short_at_start(self.id)
self.packets_data.append(b''.join(self.data))
self._reset_for_next_packet()
if (questions_written + answers_written + authorities_written + additionals_written) == 0 and (
len(self.questions) + len(self.answers) + len(self.authorities) + len(self.additionals)
) > 0:
log.warning("packets() made no progress adding records; returning")
break
self.state = self.State.finished
return self.packets_data
07070100000042000041ED000000000000000000000002631651AD00000000000000000000000000000000000000000000002A00000000python-zeroconf-0.39.1/zeroconf/_services07070100000043000081A4000000000000000000000001631651AD00000937000000000000000000000000000000000000003600000000python-zeroconf-0.39.1/zeroconf/_services/__init__.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import enum
from typing import Any, Callable, List, TYPE_CHECKING
if TYPE_CHECKING:
from .._core import Zeroconf
@enum.unique
class ServiceStateChange(enum.Enum):
Added = 1
Removed = 2
Updated = 3
class ServiceListener:
def add_service(self, zc: 'Zeroconf', type_: str, name: str) -> None:
raise NotImplementedError()
def remove_service(self, zc: 'Zeroconf', type_: str, name: str) -> None:
raise NotImplementedError()
def update_service(self, zc: 'Zeroconf', type_: str, name: str) -> None:
raise NotImplementedError()
class Signal:
def __init__(self) -> None:
self._handlers: List[Callable[..., None]] = []
def fire(self, **kwargs: Any) -> None:
for h in list(self._handlers):
h(**kwargs)
@property
def registration_interface(self) -> 'SignalRegistrationInterface':
return SignalRegistrationInterface(self._handlers)
class SignalRegistrationInterface:
def __init__(self, handlers: List[Callable[..., None]]) -> None:
self._handlers = handlers
def register_handler(self, handler: Callable[..., None]) -> 'SignalRegistrationInterface':
self._handlers.append(handler)
return self
def unregister_handler(self, handler: Callable[..., None]) -> 'SignalRegistrationInterface':
self._handlers.remove(handler)
return self
07070100000044000081A4000000000000000000000001631651AD0000552B000000000000000000000000000000000000003500000000python-zeroconf-0.39.1/zeroconf/_services/browser.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import asyncio
import queue
import random
import threading
import warnings
from collections import OrderedDict
from typing import Callable, Dict, Iterable, List, Optional, Set, TYPE_CHECKING, Tuple, Union, cast
from .._dns import DNSAddress, DNSPointer, DNSQuestion, DNSQuestionType, DNSRecord
from .._logger import log
from .._protocol.outgoing import DNSOutgoing
from .._services import (
ServiceListener,
ServiceStateChange,
Signal,
SignalRegistrationInterface,
)
from .._updates import RecordUpdate, RecordUpdateListener
from .._utils.name import possible_types, service_type_name
from .._utils.time import current_time_millis, millis_to_seconds
from ..const import (
_BROWSER_BACKOFF_LIMIT,
_BROWSER_TIME,
_CLASS_IN,
_DNS_PACKET_HEADER_LEN,
_EXPIRE_REFRESH_TIME_PERCENT,
_FLAGS_QR_QUERY,
_MAX_MSG_TYPICAL,
_MDNS_ADDR,
_MDNS_ADDR6,
_MDNS_PORT,
_TYPE_PTR,
)
# https://datatracker.ietf.org/doc/html/rfc6762#section-5.2
_FIRST_QUERY_DELAY_RANDOM_INTERVAL = (20, 120) # ms
_ON_CHANGE_DISPATCH = {
ServiceStateChange.Added: "add_service",
ServiceStateChange.Removed: "remove_service",
ServiceStateChange.Updated: "update_service",
}
if TYPE_CHECKING:
from .._core import Zeroconf
_QuestionWithKnownAnswers = Dict[DNSQuestion, Set[DNSPointer]]
class _DNSPointerOutgoingBucket:
"""A DNSOutgoing bucket."""
def __init__(self, now: float, multicast: bool) -> None:
"""Create a bucke to wrap a DNSOutgoing."""
self.now = now
self.out = DNSOutgoing(_FLAGS_QR_QUERY, multicast=multicast)
self.bytes = 0
def add(self, max_compressed_size: int, question: DNSQuestion, answers: Set[DNSPointer]) -> None:
"""Add a new set of questions and known answers to the outgoing."""
self.out.add_question(question)
for answer in answers:
self.out.add_answer_at_time(answer, self.now)
self.bytes += max_compressed_size
def _group_ptr_queries_with_known_answers(
now: float, multicast: bool, question_with_known_answers: _QuestionWithKnownAnswers
) -> List[DNSOutgoing]:
"""Aggregate queries so that as many known answers as possible fit in the same packet
without having known answers spill over into the next packet unless the
question and known answers are always going to exceed the packet size.
Some responders do not implement multi-packet known answer suppression
so we try to keep all the known answers in the same packet as the
questions.
"""
# This is the maximum size the query + known answers can be with name compression.
# The actual size of the query + known answers may be a bit smaller since other
# parts may be shared when the final DNSOutgoing packets are constructed. The
# goal of this algorithm is to quickly bucket the query + known answers without
# the overhead of actually constructing the packets.
query_by_size: Dict[DNSQuestion, int] = {
question: (question.max_size + sum([answer.max_size_compressed for answer in known_answers]))
for question, known_answers in question_with_known_answers.items()
}
max_bucket_size = _MAX_MSG_TYPICAL - _DNS_PACKET_HEADER_LEN
query_buckets: List[_DNSPointerOutgoingBucket] = []
for question in sorted(
query_by_size,
key=query_by_size.get, # type: ignore
reverse=True,
):
max_compressed_size = query_by_size[question]
answers = question_with_known_answers[question]
for query_bucket in query_buckets:
if query_bucket.bytes + max_compressed_size <= max_bucket_size:
query_bucket.add(max_compressed_size, question, answers)
break
else:
# If a single question and known answers won't fit in a packet
# we will end up generating multiple packets, but there will never
# be multiple questions
query_bucket = _DNSPointerOutgoingBucket(now, multicast)
query_bucket.add(max_compressed_size, question, answers)
query_buckets.append(query_bucket)
return [query_bucket.out for query_bucket in query_buckets]
def generate_service_query(
zc: 'Zeroconf',
now: float,
types_: List[str],
multicast: bool = True,
question_type: Optional[DNSQuestionType] = None,
) -> List[DNSOutgoing]:
"""Generate a service query for sending with zeroconf.send."""
questions_with_known_answers: _QuestionWithKnownAnswers = {}
qu_question = not multicast if question_type is None else question_type == DNSQuestionType.QU
for type_ in types_:
question = DNSQuestion(type_, _TYPE_PTR, _CLASS_IN)
question.unicast = qu_question
known_answers = {
cast(DNSPointer, record)
for record in zc.cache.get_all_by_details(type_, _TYPE_PTR, _CLASS_IN)
if not record.is_stale(now)
}
if not qu_question and zc.question_history.suppresses(
question, now, cast(Set[DNSRecord], known_answers)
):
log.debug("Asking %s was suppressed by the question history", question)
continue
questions_with_known_answers[question] = known_answers
if not qu_question:
zc.question_history.add_question_at_time(question, now, cast(Set[DNSRecord], known_answers))
return _group_ptr_queries_with_known_answers(now, multicast, questions_with_known_answers)
def _service_state_changed_from_listener(listener: ServiceListener) -> Callable[..., None]:
"""Generate a service_state_changed handlers from a listener."""
assert listener is not None
if not hasattr(listener, 'update_service'):
warnings.warn(
"%r has no update_service method. Provide one (it can be empty if you "
"don't care about the updates), it'll become mandatory." % (listener,),
FutureWarning,
)
def on_change(
zeroconf: 'Zeroconf', service_type: str, name: str, state_change: ServiceStateChange
) -> None:
getattr(listener, _ON_CHANGE_DISPATCH[state_change])(zeroconf, service_type, name)
return on_change
class QueryScheduler:
"""Schedule outgoing PTR queries for Continuous Multicast DNS Querying
https://datatracker.ietf.org/doc/html/rfc6762#section-5.2
"""
def __init__(
self,
types: Set[str],
delay: int,
first_random_delay_interval: Tuple[int, int],
):
self._schedule_changed_event: Optional[asyncio.Event] = None
self._types = types
self._next_time: Dict[str, float] = {}
self._first_random_delay_interval = first_random_delay_interval
self._delay: Dict[str, float] = {check_type_: delay for check_type_ in self._types}
def start(self, now: float) -> None:
"""Start the scheduler."""
self._schedule_changed_event = asyncio.Event()
self._generate_first_next_time(now)
def _generate_first_next_time(self, now: float) -> None:
"""Generate the initial next query times.
https://datatracker.ietf.org/doc/html/rfc6762#section-5.2
To avoid accidental synchronization when, for some reason, multiple
clients begin querying at exactly the same moment (e.g., because of
some common external trigger event), a Multicast DNS querier SHOULD
also delay the first query of the series by a randomly chosen amount
in the range 20-120 ms.
"""
delay = millis_to_seconds(random.randint(*self._first_random_delay_interval))
next_time = now + delay
self._next_time = {check_type_: next_time for check_type_ in self._types}
def millis_to_wait(self, now: float) -> float:
"""Returns the number of milliseconds to wait for the next event."""
# Wait for the type has the smallest next time
next_time = min(self._next_time.values())
return 0 if next_time <= now else next_time - now
def reschedule_type(self, type_: str, next_time: float) -> bool:
"""Reschedule the query for a type to happen sooner."""
if next_time >= self._next_time[type_]:
return False
self._next_time[type_] = next_time
return True
def process_ready_types(self, now: float) -> List[str]:
"""Generate a list of ready types that is due and schedule the next time."""
if self.millis_to_wait(now):
return []
ready_types: List[str] = []
for type_, due in self._next_time.items():
if due > now:
continue
ready_types.append(type_)
self._next_time[type_] = now + self._delay[type_]
self._delay[type_] = min(_BROWSER_BACKOFF_LIMIT * 1000, self._delay[type_] * 2)
return ready_types
class _ServiceBrowserBase(RecordUpdateListener):
"""Base class for ServiceBrowser."""
def __init__(
self,
zc: 'Zeroconf',
type_: Union[str, list],
handlers: Optional[Union[ServiceListener, List[Callable[..., None]]]] = None,
listener: Optional[ServiceListener] = None,
addr: Optional[str] = None,
port: int = _MDNS_PORT,
delay: int = _BROWSER_TIME,
question_type: Optional[DNSQuestionType] = None,
) -> None:
"""Used to browse for a service for specific type(s).
Constructor parameters are as follows:
* `zc`: A Zeroconf instance
* `type_`: fully qualified service type name
* `handler`: ServiceListener or Callable that knows how to process ServiceStateChange events
* `listener`: ServiceListener
* `addr`: address to send queries (will default to multicast)
* `port`: port to send queries (will default to mdns 5353)
* `delay`: The initial delay between answering questions
* `question_type`: The type of questions to ask (DNSQuestionType.QM or DNSQuestionType.QU)
The listener object will have its add_service() and
remove_service() methods called when this browser
discovers changes in the services availability.
"""
assert handlers or listener, 'You need to specify at least one handler'
self.types: Set[str] = set(type_ if isinstance(type_, list) else [type_])
for check_type_ in self.types:
# Will generate BadTypeInNameException on a bad name
service_type_name(check_type_, strict=False)
self.zc = zc
self.addr = addr
self.port = port
self.multicast = self.addr in (None, _MDNS_ADDR, _MDNS_ADDR6)
self.question_type = question_type
self._pending_handlers: OrderedDict[Tuple[str, str], ServiceStateChange] = OrderedDict()
self._service_state_changed = Signal()
self.query_scheduler = QueryScheduler(self.types, delay, _FIRST_QUERY_DELAY_RANDOM_INTERVAL)
self.queue: Optional[queue.SimpleQueue] = None
self.done = False
self._first_request: bool = True
self._next_send_timer: Optional[asyncio.TimerHandle] = None
if hasattr(handlers, 'add_service'):
listener = cast('ServiceListener', handlers)
handlers = None
handlers = cast(List[Callable[..., None]], handlers or [])
if listener:
handlers.append(_service_state_changed_from_listener(listener))
for h in handlers:
self.service_state_changed.register_handler(h)
def _async_start(self) -> None:
"""Generate the next time and setup listeners.
Must be called by uses of this base class after they
have finished setting their properties.
"""
self.query_scheduler.start(current_time_millis())
self.zc.async_add_listener(self, [DNSQuestion(type_, _TYPE_PTR, _CLASS_IN) for type_ in self.types])
# Only start queries after the listener is installed
asyncio.ensure_future(self._async_start_query_sender())
@property
def service_state_changed(self) -> SignalRegistrationInterface:
return self._service_state_changed.registration_interface
def _names_matching_types(self, names: Iterable[str]) -> List[Tuple[str, str]]:
"""Return the type and name for records matching the types we are browsing."""
return [(type_, name) for name in names for type_ in self.types.intersection(possible_types(name))]
def _enqueue_callback(
self,
state_change: ServiceStateChange,
type_: str,
name: str,
) -> None:
# Code to ensure we only do a single update message
# Precedence is; Added, Remove, Update
key = (name, type_)
if (
state_change is ServiceStateChange.Added
or (
state_change is ServiceStateChange.Removed
and self._pending_handlers.get(key) != ServiceStateChange.Added
)
or (state_change is ServiceStateChange.Updated and key not in self._pending_handlers)
):
self._pending_handlers[key] = state_change
def _async_process_record_update(
self, now: float, record: DNSRecord, old_record: Optional[DNSRecord]
) -> None:
"""Process a single record update from a batch of updates."""
if isinstance(record, DNSPointer):
for type_ in self.types.intersection(possible_types(record.name)):
if old_record is None:
self._enqueue_callback(ServiceStateChange.Added, type_, record.alias)
elif record.is_expired(now):
self._enqueue_callback(ServiceStateChange.Removed, type_, record.alias)
else:
self.reschedule_type(type_, now, record.get_expiration_time(_EXPIRE_REFRESH_TIME_PERCENT))
return
# If its expired or already exists in the cache it cannot be updated.
if old_record or record.is_expired(now):
return
if isinstance(record, DNSAddress):
# Iterate through the DNSCache and callback any services that use this address
for type_, name in self._names_matching_types(
{service.name for service in self.zc.cache.async_entries_with_server(record.name)}
):
self._enqueue_callback(ServiceStateChange.Updated, type_, name)
return
for type_, name in self._names_matching_types((record.name,)):
self._enqueue_callback(ServiceStateChange.Updated, type_, name)
def async_update_records(self, zc: 'Zeroconf', now: float, records: List[RecordUpdate]) -> None:
"""Callback invoked by Zeroconf when new information arrives.
Updates information required by browser in the Zeroconf cache.
Ensures that there is are no unecessary duplicates in the list.
This method will be run in the event loop.
"""
for record in records:
self._async_process_record_update(now, record[0], record[1])
def async_update_records_complete(self) -> None:
"""Called when a record update has completed for all handlers.
At this point the cache will have the new records.
This method will be run in the event loop.
"""
while self._pending_handlers:
event = self._pending_handlers.popitem(False)
# If there is a queue running (ServiceBrowser)
# get fired in dedicated thread
if self.queue:
self.queue.put(event)
else:
self._fire_service_state_changed_event(event)
def _fire_service_state_changed_event(self, event: Tuple[Tuple[str, str], ServiceStateChange]) -> None:
"""Fire a service state changed event.
When running with ServiceBrowser, this will happen in the dedicated
thread.
When running with AsyncServiceBrowser, this will happen in the event loop.
"""
name_type, state_change = event
self._service_state_changed.fire(
zeroconf=self.zc,
service_type=name_type[1],
name=name_type[0],
state_change=state_change,
)
def _async_cancel(self) -> None:
"""Cancel the browser."""
self.done = True
self._cancel_send_timer()
self.zc.async_remove_listener(self)
def _generate_ready_queries(self, first_request: bool, now: float) -> List[DNSOutgoing]:
"""Generate the service browser query for any type that is due."""
ready_types = self.query_scheduler.process_ready_types(now)
if not ready_types:
return []
# If they did not specify and this is the first request, ask QU questions
# https://datatracker.ietf.org/doc/html/rfc6762#section-5.4 since we are
# just starting up and we know our cache is likely empty. This ensures
# the next outgoing will be sent with the known answers list.
question_type = DNSQuestionType.QU if not self.question_type and first_request else self.question_type
return generate_service_query(self.zc, now, ready_types, self.multicast, question_type)
async def _async_start_query_sender(self) -> None:
"""Start scheduling queries."""
if not self.zc.started:
await self.zc.async_wait_for_start()
self._async_send_ready_queries_schedule_next()
def _cancel_send_timer(self) -> None:
"""Cancel the next send."""
if self._next_send_timer:
self._next_send_timer.cancel()
def reschedule_type(self, type_: str, now: float, next_time: float) -> None:
"""Reschedule a type to be refreshed in the future."""
if self.query_scheduler.reschedule_type(type_, next_time):
self._cancel_send_timer()
self._async_schedule_next(now)
self._async_send_ready_queries(now)
def _async_send_ready_queries(self, now: float) -> None:
"""Send any ready queries."""
outs = self._generate_ready_queries(self._first_request, now)
if outs:
self._first_request = False
for out in outs:
self.zc.async_send(out, addr=self.addr, port=self.port)
def _async_send_ready_queries_schedule_next(self) -> None:
"""Send ready queries and schedule next one checking for done first."""
if self.done or self.zc.done:
return
now = current_time_millis()
self._async_send_ready_queries(now)
self._async_schedule_next(now)
def _async_schedule_next(self, now: float) -> None:
"""Scheule the next time."""
assert self.zc.loop is not None
delay = millis_to_seconds(self.query_scheduler.millis_to_wait(now))
self._next_send_timer = self.zc.loop.call_later(delay, self._async_send_ready_queries_schedule_next)
class ServiceBrowser(_ServiceBrowserBase, threading.Thread):
"""Used to browse for a service of a specific type.
The listener object will have its add_service() and
remove_service() methods called when this browser
discovers changes in the services availability."""
def __init__(
self,
zc: 'Zeroconf',
type_: Union[str, list],
handlers: Optional[Union[ServiceListener, List[Callable[..., None]]]] = None,
listener: Optional[ServiceListener] = None,
addr: Optional[str] = None,
port: int = _MDNS_PORT,
delay: int = _BROWSER_TIME,
question_type: Optional[DNSQuestionType] = None,
) -> None:
assert zc.loop is not None
if not zc.loop.is_running():
raise RuntimeError("The event loop is not running")
threading.Thread.__init__(self)
super().__init__(zc, type_, handlers, listener, addr, port, delay, question_type)
# Add the queue before the listener is installed in _setup
# to ensure that events run in the dedicated thread and do
# not block the event loop
self.queue = queue.SimpleQueue()
self.daemon = True
self.start()
zc.loop.call_soon_threadsafe(self._async_start)
self.name = "zeroconf-ServiceBrowser-{}-{}".format(
'-'.join([type_[:-7] for type_ in self.types]),
getattr(self, 'native_id', self.ident),
)
def cancel(self) -> None:
"""Cancel the browser."""
assert self.zc.loop is not None
assert self.queue is not None
self.queue.put(None)
self.zc.loop.call_soon_threadsafe(self._async_cancel)
self.join()
def run(self) -> None:
"""Run the browser thread."""
assert self.queue is not None
while True:
event = self.queue.get()
if event is None:
return
self._fire_service_state_changed_event(event)
07070100000045000081A4000000000000000000000001631651AD0000517E000000000000000000000000000000000000003200000000python-zeroconf-0.39.1/zeroconf/_services/info.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import ipaddress
import random
import socket
from typing import Any, Dict, List, Optional, TYPE_CHECKING, Union, cast
from .._dns import DNSAddress, DNSPointer, DNSQuestionType, DNSRecord, DNSService, DNSText
from .._exceptions import BadTypeInNameException
from .._logger import log
from .._protocol.outgoing import DNSOutgoing
from .._updates import RecordUpdate, RecordUpdateListener
from .._utils.asyncio import get_running_loop, run_coro_with_timeout
from .._utils.name import service_type_name
from .._utils.net import (
IPVersion,
_encode_address,
_is_v6_address,
)
from .._utils.time import current_time_millis
from ..const import (
_CLASS_IN,
_CLASS_UNIQUE,
_DNS_HOST_TTL,
_DNS_OTHER_TTL,
_FLAGS_QR_QUERY,
_LISTENER_TIME,
_TYPE_A,
_TYPE_AAAA,
_TYPE_PTR,
_TYPE_SRV,
_TYPE_TXT,
)
# https://datatracker.ietf.org/doc/html/rfc6762#section-5.2
# The most common case for calling ServiceInfo is from a
# ServiceBrowser. After the first request we add a few random
# milliseconds to the delay between requests to reduce the chance
# that there are multiple ServiceBrowser callbacks running on
# the network that are firing at the same time when they
# see the same multicast response and decide to refresh
# the A/AAAA/SRV records for a host.
_AVOID_SYNC_DELAY_RANDOM_INTERVAL = (20, 120)
if TYPE_CHECKING:
from .._core import Zeroconf
def instance_name_from_service_info(info: "ServiceInfo") -> str:
"""Calculate the instance name from the ServiceInfo."""
# This is kind of funky because of the subtype based tests
# need to make subtypes a first class citizen
service_name = service_type_name(info.name)
if not info.type.endswith(service_name):
raise BadTypeInNameException
return info.name[: -len(service_name) - 1]
class ServiceInfo(RecordUpdateListener):
"""Service information.
Constructor parameters are as follows:
* `type_`: fully qualified service type name
* `name`: fully qualified service name
* `port`: port that the service runs on
* `weight`: weight of the service
* `priority`: priority of the service
* `properties`: dictionary of properties (or a bytes object holding the contents of the `text` field).
converted to str and then encoded to bytes using UTF-8. Keys with `None` values are converted to
value-less attributes.
* `server`: fully qualified name for service host (defaults to name)
* `host_ttl`: ttl used for A/SRV records
* `other_ttl`: ttl used for PTR/TXT records
* `addresses` and `parsed_addresses`: List of IP addresses (either as bytes, network byte order,
or in parsed form as text; at most one of those parameters can be provided)
* interface_index: scope_id or zone_id for IPv6 link-local addresses i.e. an identifier of the interface
where the peer is connected to
"""
text = b''
def __init__(
self,
type_: str,
name: str,
port: Optional[int] = None,
weight: int = 0,
priority: int = 0,
properties: Union[bytes, Dict] = b'',
server: Optional[str] = None,
host_ttl: int = _DNS_HOST_TTL,
other_ttl: int = _DNS_OTHER_TTL,
*,
addresses: Optional[List[bytes]] = None,
parsed_addresses: Optional[List[str]] = None,
interface_index: Optional[int] = None,
) -> None:
# Accept both none, or one, but not both.
if addresses is not None and parsed_addresses is not None:
raise TypeError("addresses and parsed_addresses cannot be provided together")
if not type_.endswith(service_type_name(name, strict=False)):
raise BadTypeInNameException
self.type = type_
self._name = name
self.key = name.lower()
self._ipv4_addresses: List[ipaddress.IPv4Address] = []
self._ipv6_addresses: List[ipaddress.IPv6Address] = []
if addresses is not None:
self.addresses = addresses
elif parsed_addresses is not None:
self.addresses = [_encode_address(a) for a in parsed_addresses]
self.port = port
self.weight = weight
self.priority = priority
self.server = server if server else name
self.server_key = self.server.lower()
self._properties: Dict[Union[str, bytes], Optional[Union[str, bytes]]] = {}
if isinstance(properties, bytes):
self._set_text(properties)
else:
self._set_properties(properties)
self.host_ttl = host_ttl
self.other_ttl = other_ttl
self.interface_index = interface_index
@property
def name(self) -> str:
"""The name of the service."""
return self._name
@name.setter
def name(self, name: str) -> None:
"""Replace the the name and reset the key."""
self._name = name
self.key = name.lower()
@property
def addresses(self) -> List[bytes]:
"""IPv4 addresses of this service.
Only IPv4 addresses are returned for backward compatibility.
Use :meth:`addresses_by_version` or :meth:`parsed_addresses` to
include IPv6 addresses as well.
"""
return self.addresses_by_version(IPVersion.V4Only)
@addresses.setter
def addresses(self, value: List[bytes]) -> None:
"""Replace the addresses list.
This replaces all currently stored addresses, both IPv4 and IPv6.
"""
self._ipv4_addresses.clear()
self._ipv6_addresses.clear()
for address in value:
try:
addr = ipaddress.ip_address(address)
except ValueError:
raise TypeError(
"Addresses must either be IPv4 or IPv6 strings, bytes, or integers;"
f" got {address!r}. Hint: convert string addresses with socket.inet_pton"
)
if isinstance(addr, ipaddress.IPv4Address):
self._ipv4_addresses.append(addr)
else:
self._ipv6_addresses.append(addr)
@property
def properties(self) -> Dict:
"""If properties were set in the constructor this property returns the original dictionary
of type `Dict[Union[bytes, str], Any]`.
If properties are coming from the network, after decoding a TXT record, the keys are always
bytes and the values are either bytes, if there was a value, even empty, or `None`, if there
was none. No further decoding is attempted. The type returned is `Dict[bytes, Optional[bytes]]`.
"""
return self._properties
def addresses_by_version(self, version: IPVersion) -> List[bytes]:
"""List addresses matching IP version."""
if version == IPVersion.V4Only:
return [addr.packed for addr in self._ipv4_addresses]
if version == IPVersion.V6Only:
return [addr.packed for addr in self._ipv6_addresses]
return [
*(addr.packed for addr in self._ipv4_addresses),
*(addr.packed for addr in self._ipv6_addresses),
]
def parsed_addresses(self, version: IPVersion = IPVersion.All) -> List[str]:
"""List addresses in their parsed string form."""
result = self.addresses_by_version(version)
return [
socket.inet_ntop(socket.AF_INET6 if _is_v6_address(addr) else socket.AF_INET, addr)
for addr in result
]
def parsed_scoped_addresses(self, version: IPVersion = IPVersion.All) -> List[str]:
"""Equivalent to parsed_addresses, with the exception that IPv6 Link-Local
addresses are qualified with %<interface_index> when available
"""
if self.interface_index is None:
return self.parsed_addresses(version)
def is_link_local(addr_str: str) -> Any:
addr = ipaddress.ip_address(addr_str)
return addr.version == 6 and addr.is_link_local
ll_addrs = list(filter(is_link_local, self.parsed_addresses(version)))
other_addrs = list(filter(lambda addr: not is_link_local(addr), self.parsed_addresses(version)))
return [f"{addr}%{self.interface_index}" for addr in ll_addrs] + other_addrs
def _set_properties(self, properties: Dict) -> None:
"""Sets properties and text of this info from a dictionary"""
self._properties = properties
list_ = []
result = b''
for key, value in properties.items():
if isinstance(key, str):
key = key.encode('utf-8')
record = key
if value is not None:
if not isinstance(value, bytes):
value = str(value).encode('utf-8')
record += b'=' + value
list_.append(record)
for item in list_:
result = b''.join((result, bytes((len(item),)), item))
self.text = result
def _set_text(self, text: bytes) -> None:
"""Sets properties and text given a text field"""
self.text = text
end = len(text)
if end == 0:
self._properties = {}
return
result: Dict[Union[str, bytes], Optional[Union[str, bytes]]] = {}
index = 0
strs = []
while index < end:
length = text[index]
index += 1
strs.append(text[index : index + length])
index += length
key: bytes
value: Optional[bytes]
for s in strs:
try:
key, value = s.split(b'=', 1)
except ValueError:
# No equals sign at all
key = s
value = None
# Only update non-existent properties
if key and result.get(key) is None:
result[key] = value
self._properties = result
def get_name(self) -> str:
"""Name accessor"""
return self.name[: len(self.name) - len(self.type) - 1]
def update_record(self, zc: 'Zeroconf', now: float, record: Optional[DNSRecord]) -> None:
"""Updates service information from a DNS record.
This method is deprecated and will be removed in a future version.
update_records should be implemented instead.
This method will be run in the event loop.
"""
if record is not None:
self._process_records_threadsafe(zc, now, [RecordUpdate(record, None)])
def async_update_records(self, zc: 'Zeroconf', now: float, records: List[RecordUpdate]) -> None:
"""Updates service information from a DNS record.
This method will be run in the event loop.
"""
self._process_records_threadsafe(zc, now, records)
def _process_records_threadsafe(self, zc: 'Zeroconf', now: float, records: List[RecordUpdate]) -> None:
"""Thread safe record updating."""
update_addresses = False
for record_update in records:
if isinstance(record_update[0], DNSService):
update_addresses = True
self._process_record_threadsafe(record_update[0], now)
# Only update addresses if the DNSService (.server) has changed
if not update_addresses:
return
for record in self._get_address_records_from_cache(zc):
self._process_record_threadsafe(record, now)
def _process_record_threadsafe(self, record: DNSRecord, now: float) -> None:
if record.is_expired(now):
return
if isinstance(record, DNSAddress):
if record.key != self.server_key:
return
try:
ip_addr = ipaddress.ip_address(record.address)
except ValueError as ex:
log.warning("Encountered invalid address while processing %s: %s", record, ex)
return
if isinstance(ip_addr, ipaddress.IPv4Address):
if ip_addr not in self._ipv4_addresses:
self._ipv4_addresses.insert(0, ip_addr)
return
if ip_addr not in self._ipv6_addresses:
self._ipv6_addresses.insert(0, ip_addr)
if ip_addr.is_link_local:
self.interface_index = record.scope_id
return
if isinstance(record, DNSService):
if record.key != self.key:
return
self.name = record.name
self.server = record.server
self.server_key = record.server.lower()
self.port = record.port
self.weight = record.weight
self.priority = record.priority
return
if isinstance(record, DNSText):
if record.key == self.key:
self._set_text(record.text)
def dns_addresses(
self,
override_ttl: Optional[int] = None,
version: IPVersion = IPVersion.All,
created: Optional[float] = None,
) -> List[DNSAddress]:
"""Return matching DNSAddress from ServiceInfo."""
return [
DNSAddress(
self.server,
_TYPE_AAAA if _is_v6_address(address) else _TYPE_A,
_CLASS_IN | _CLASS_UNIQUE,
override_ttl if override_ttl is not None else self.host_ttl,
address,
created=created,
)
for address in self.addresses_by_version(version)
]
def dns_pointer(self, override_ttl: Optional[int] = None, created: Optional[float] = None) -> DNSPointer:
"""Return DNSPointer from ServiceInfo."""
return DNSPointer(
self.type,
_TYPE_PTR,
_CLASS_IN,
override_ttl if override_ttl is not None else self.other_ttl,
self.name,
created,
)
def dns_service(self, override_ttl: Optional[int] = None, created: Optional[float] = None) -> DNSService:
"""Return DNSService from ServiceInfo."""
return DNSService(
self.name,
_TYPE_SRV,
_CLASS_IN | _CLASS_UNIQUE,
override_ttl if override_ttl is not None else self.host_ttl,
self.priority,
self.weight,
cast(int, self.port),
self.server,
created,
)
def dns_text(self, override_ttl: Optional[int] = None, created: Optional[float] = None) -> DNSText:
"""Return DNSText from ServiceInfo."""
return DNSText(
self.name,
_TYPE_TXT,
_CLASS_IN | _CLASS_UNIQUE,
override_ttl if override_ttl is not None else self.other_ttl,
self.text,
created,
)
def _get_address_records_from_cache(self, zc: 'Zeroconf') -> List[DNSRecord]:
"""Get the address records from the cache."""
return [
*zc.cache.get_all_by_details(self.server, _TYPE_A, _CLASS_IN),
*zc.cache.get_all_by_details(self.server, _TYPE_AAAA, _CLASS_IN),
]
def load_from_cache(self, zc: 'Zeroconf') -> bool:
"""Populate the service info from the cache.
This method is designed to be threadsafe.
"""
now = current_time_millis()
record_updates: List[RecordUpdate] = []
cached_srv_record = zc.cache.get_by_details(self.name, _TYPE_SRV, _CLASS_IN)
if cached_srv_record:
# If there is a srv record, A and AAAA will already
# be called and we do not want to do it twice
record_updates.append(RecordUpdate(cached_srv_record, None))
else:
for record in self._get_address_records_from_cache(zc):
record_updates.append(RecordUpdate(record, None))
cached_txt_record = zc.cache.get_by_details(self.name, _TYPE_TXT, _CLASS_IN)
if cached_txt_record:
record_updates.append(RecordUpdate(cached_txt_record, None))
self._process_records_threadsafe(zc, now, record_updates)
return self._is_complete
@property
def _is_complete(self) -> bool:
"""The ServiceInfo has all expected properties."""
return bool(self.text is not None and (self._ipv4_addresses or self._ipv6_addresses))
def request(
self, zc: 'Zeroconf', timeout: float, question_type: Optional[DNSQuestionType] = None
) -> bool:
"""Returns true if the service could be discovered on the
network, and updates this object with details discovered.
While it is not expected during normal operation,
this function may raise EventLoopBlocked if the underlying
call to `async_request` cannot be completed.
"""
assert zc.loop is not None and zc.loop.is_running()
if zc.loop == get_running_loop():
raise RuntimeError("Use AsyncServiceInfo.async_request from the event loop")
return bool(run_coro_with_timeout(self.async_request(zc, timeout, question_type), zc.loop, timeout))
async def async_request(
self, zc: 'Zeroconf', timeout: float, question_type: Optional[DNSQuestionType] = None
) -> bool:
"""Returns true if the service could be discovered on the
network, and updates this object with details discovered.
"""
if not zc.started:
await zc.async_wait_for_start()
if self.load_from_cache(zc):
return True
first_request = True
now = current_time_millis()
delay = _LISTENER_TIME
next_ = now
last = now + timeout
try:
zc.async_add_listener(self, None)
while not self._is_complete:
if last <= now:
return False
if next_ <= now:
out = self.generate_request_query(
zc, now, question_type or DNSQuestionType.QU if first_request else DNSQuestionType.QM
)
first_request = False
if not out.questions:
return self.load_from_cache(zc)
zc.async_send(out)
next_ = now + delay
delay *= 2
next_ += random.randint(*_AVOID_SYNC_DELAY_RANDOM_INTERVAL)
await zc.async_wait(min(next_, last) - now)
now = current_time_millis()
finally:
zc.async_remove_listener(self)
return True
def generate_request_query(
self, zc: 'Zeroconf', now: float, question_type: Optional[DNSQuestionType] = None
) -> DNSOutgoing:
"""Generate the request query."""
out = DNSOutgoing(_FLAGS_QR_QUERY)
out.add_question_or_one_cache(zc.cache, now, self.name, _TYPE_SRV, _CLASS_IN)
out.add_question_or_one_cache(zc.cache, now, self.name, _TYPE_TXT, _CLASS_IN)
out.add_question_or_all_cache(zc.cache, now, self.server, _TYPE_A, _CLASS_IN)
out.add_question_or_all_cache(zc.cache, now, self.server, _TYPE_AAAA, _CLASS_IN)
if question_type == DNSQuestionType.QU:
for question in out.questions:
question.unicast = True
return out
def __eq__(self, other: object) -> bool:
"""Tests equality of service name"""
return isinstance(other, ServiceInfo) and other.name == self.name
def __repr__(self) -> str:
"""String representation"""
return '{}({})'.format(
type(self).__name__,
', '.join(
'{}={!r}'.format(name, getattr(self, name))
for name in (
'type',
'name',
'addresses',
'port',
'weight',
'priority',
'server',
'properties',
'interface_index',
)
),
)
07070100000046000081A4000000000000000000000001631651AD00000EF5000000000000000000000000000000000000003600000000python-zeroconf-0.39.1/zeroconf/_services/registry.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
from typing import Dict, List, Optional, Union
from .info import ServiceInfo
from .._exceptions import ServiceNameAlreadyRegistered
class ServiceRegistry:
"""A registry to keep track of services.
The registry must only be accessed from
the event loop as it is not thread safe.
"""
def __init__(
self,
) -> None:
"""Create the ServiceRegistry class."""
self._services: Dict[str, ServiceInfo] = {}
self.types: Dict[str, List] = {}
self.servers: Dict[str, List] = {}
def async_add(self, info: ServiceInfo) -> None:
"""Add a new service to the registry."""
self._add(info)
def async_remove(self, info: Union[List[ServiceInfo], ServiceInfo]) -> None:
"""Remove a new service from the registry."""
self._remove(info if isinstance(info, list) else [info])
def async_update(self, info: ServiceInfo) -> None:
"""Update new service in the registry."""
self._remove([info])
self._add(info)
def async_get_service_infos(self) -> List[ServiceInfo]:
"""Return all ServiceInfo."""
return list(self._services.values())
def async_get_info_name(self, name: str) -> Optional[ServiceInfo]:
"""Return all ServiceInfo for the name."""
return self._services.get(name.lower())
def async_get_types(self) -> List[str]:
"""Return all types."""
return list(self.types.keys())
def async_get_infos_type(self, type_: str) -> List[ServiceInfo]:
"""Return all ServiceInfo matching type."""
return self._async_get_by_index(self.types, type_)
def async_get_infos_server(self, server: str) -> List[ServiceInfo]:
"""Return all ServiceInfo matching server."""
return self._async_get_by_index(self.servers, server)
def _async_get_by_index(self, records: Dict[str, List], key: str) -> List[ServiceInfo]:
"""Return all ServiceInfo matching the index."""
return [self._services[name] for name in records.get(key.lower(), [])]
def _add(self, info: ServiceInfo) -> None:
"""Add a new service under the lock."""
if info.key in self._services:
raise ServiceNameAlreadyRegistered
self._services[info.key] = info
self.types.setdefault(info.type.lower(), []).append(info.key)
self.servers.setdefault(info.server_key, []).append(info.key)
def _remove(self, infos: List[ServiceInfo]) -> None:
"""Remove a services under the lock."""
for info in infos:
if info.key not in self._services:
continue
old_service_info = self._services[info.key]
self.types[old_service_info.type.lower()].remove(info.key)
self.servers[old_service_info.server_key].remove(info.key)
del self._services[info.key]
07070100000047000081A4000000000000000000000001631651AD00000BBB000000000000000000000000000000000000003300000000python-zeroconf-0.39.1/zeroconf/_services/types.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import time
from typing import Optional, Set, Tuple, Union
from .browser import ServiceBrowser
from .._core import Zeroconf
from .._services import ServiceListener
from .._utils.net import IPVersion, InterfaceChoice, InterfacesType
from ..const import _SERVICE_TYPE_ENUMERATION_NAME
class ZeroconfServiceTypes(ServiceListener):
"""
Return all of the advertised services on any local networks
"""
def __init__(self) -> None:
"""Keep track of found services in a set."""
self.found_services: Set[str] = set()
def add_service(self, zc: Zeroconf, type_: str, name: str) -> None:
"""Service added."""
self.found_services.add(name)
def update_service(self, zc: Zeroconf, type_: str, name: str) -> None:
"""Service updated."""
def remove_service(self, zc: Zeroconf, type_: str, name: str) -> None:
"""Service removed."""
@classmethod
def find(
cls,
zc: Optional[Zeroconf] = None,
timeout: Union[int, float] = 5,
interfaces: InterfacesType = InterfaceChoice.All,
ip_version: Optional[IPVersion] = None,
) -> Tuple[str, ...]:
"""
Return all of the advertised services on any local networks.
:param zc: Zeroconf() instance. Pass in if already have an
instance running or if non-default interfaces are needed
:param timeout: seconds to wait for any responses
:param interfaces: interfaces to listen on.
:param ip_version: IP protocol version to use.
:return: tuple of service type strings
"""
local_zc = zc or Zeroconf(interfaces=interfaces, ip_version=ip_version)
listener = cls()
browser = ServiceBrowser(local_zc, _SERVICE_TYPE_ENUMERATION_NAME, listener=listener)
# wait for responses
time.sleep(timeout)
browser.cancel()
# close down anything we opened
if zc is None:
local_zc.close()
return tuple(sorted(listener.found_services))
07070100000048000081A4000000000000000000000001631651AD00000B5F000000000000000000000000000000000000002C00000000python-zeroconf-0.39.1/zeroconf/_updates.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
from typing import List, NamedTuple, Optional, TYPE_CHECKING
from ._dns import DNSRecord
if TYPE_CHECKING:
from ._core import Zeroconf
class RecordUpdate(NamedTuple):
new: DNSRecord
old: Optional[DNSRecord]
class RecordUpdateListener:
"""Base call for all record listeners.
All listeners passed to async_add_listener should use RecordUpdateListener
as a base class. In the future it will be required.
"""
def update_record( # pylint: disable=no-self-use
self, zc: 'Zeroconf', now: float, record: DNSRecord
) -> None:
"""Update a single record.
This method is deprecated and will be removed in a future version.
update_records should be implemented instead.
"""
raise RuntimeError("update_record is deprecated and will be removed in a future version.")
def async_update_records(self, zc: 'Zeroconf', now: float, records: List[RecordUpdate]) -> None:
"""Update multiple records in one shot.
All records that are received in a single packet are passed
to update_records.
This implementation is a compatiblity shim to ensure older code
that uses RecordUpdateListener as a base class will continue to
get calls to update_record. This method will raise
NotImplementedError in a future version.
At this point the cache will not have the new records
Records are passed as a list of RecordUpdate. This
allows consumers of async_update_records to avoid cache lookups.
This method will be run in the event loop.
"""
for record in records:
self.update_record(zc, now, record[0])
def async_update_records_complete(self) -> None:
"""Called when a record update has completed for all handlers.
At this point the cache will have the new records.
This method will be run in the event loop.
"""
07070100000049000041ED000000000000000000000002631651AD00000000000000000000000000000000000000000000002700000000python-zeroconf-0.39.1/zeroconf/_utils0707010000004A000081A4000000000000000000000001631651AD000003CB000000000000000000000000000000000000003300000000python-zeroconf-0.39.1/zeroconf/_utils/__init__.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
0707010000004B000081A4000000000000000000000001631651AD00000FAB000000000000000000000000000000000000003200000000python-zeroconf-0.39.1/zeroconf/_utils/asyncio.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import asyncio
import concurrent.futures
import contextlib
from typing import Any, Awaitable, Coroutine, Optional, Set
import async_timeout
from .time import millis_to_seconds
from .._exceptions import EventLoopBlocked
from ..const import _LOADED_SYSTEM_TIMEOUT
# The combined timeouts should be lower than _CLOSE_TIMEOUT + _WAIT_FOR_LOOP_TASKS_TIMEOUT
_TASK_AWAIT_TIMEOUT = 1
_GET_ALL_TASKS_TIMEOUT = 3
_WAIT_FOR_LOOP_TASKS_TIMEOUT = 3 # Must be larger than _TASK_AWAIT_TIMEOUT
async def wait_event_or_timeout(event: asyncio.Event, timeout: float) -> None:
"""Wait for an event or timeout."""
with contextlib.suppress(asyncio.TimeoutError):
async with async_timeout.timeout(timeout):
await event.wait()
async def _async_get_all_tasks(loop: asyncio.AbstractEventLoop) -> Set[asyncio.Task]:
"""Return all tasks running."""
await asyncio.sleep(0) # flush out any call_soon_threadsafe
# If there are multiple event loops running, all_tasks is not
# safe EVEN WHEN CALLED FROM THE EVENTLOOP
# under PyPy so we have to try a few times.
for _ in range(3):
with contextlib.suppress(RuntimeError):
return asyncio.all_tasks(loop)
return set()
async def _wait_for_loop_tasks(wait_tasks: Set[asyncio.Task]) -> None:
"""Wait for the event loop thread we started to shutdown."""
await asyncio.wait(wait_tasks, timeout=_TASK_AWAIT_TIMEOUT)
async def await_awaitable(aw: Awaitable) -> None:
"""Wait on an awaitable and the task it returns."""
task = await aw
await task
def run_coro_with_timeout(aw: Coroutine, loop: asyncio.AbstractEventLoop, timeout: float) -> Any:
"""Run a coroutine with a timeout.
The timeout should only be used as a safeguard to prevent
the program from blocking forever. The timeout should
never be expected to be reached during normal operation.
While not expected during normal operations, the
function raises `EventLoopBlocked` if the coroutine takes
longer to complete than the timeout.
"""
try:
return asyncio.run_coroutine_threadsafe(aw, loop).result(
millis_to_seconds(timeout) + _LOADED_SYSTEM_TIMEOUT
)
except concurrent.futures.TimeoutError as ex:
raise EventLoopBlocked from ex
def shutdown_loop(loop: asyncio.AbstractEventLoop) -> None:
"""Wait for pending tasks and stop an event loop."""
pending_tasks = set(
asyncio.run_coroutine_threadsafe(_async_get_all_tasks(loop), loop).result(_GET_ALL_TASKS_TIMEOUT)
)
pending_tasks -= {task for task in pending_tasks if task.done()}
if pending_tasks:
asyncio.run_coroutine_threadsafe(_wait_for_loop_tasks(pending_tasks), loop).result(
_WAIT_FOR_LOOP_TASKS_TIMEOUT
)
loop.call_soon_threadsafe(loop.stop)
def get_running_loop() -> Optional[asyncio.AbstractEventLoop]:
"""Check if an event loop is already running."""
with contextlib.suppress(RuntimeError):
return asyncio.get_running_loop()
return None
0707010000004C000081A4000000000000000000000001631651AD00001A97000000000000000000000000000000000000002F00000000python-zeroconf-0.39.1/zeroconf/_utils/name.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
from typing import Set
from .._exceptions import BadTypeInNameException
from ..const import (
_HAS_ASCII_CONTROL_CHARS,
_HAS_A_TO_Z,
_HAS_ONLY_A_TO_Z_NUM_HYPHEN,
_HAS_ONLY_A_TO_Z_NUM_HYPHEN_UNDERSCORE,
_LOCAL_TRAILER,
_NONTCP_PROTOCOL_LOCAL_TRAILER,
_TCP_PROTOCOL_LOCAL_TRAILER,
)
def service_type_name(type_: str, *, strict: bool = True) -> str: # pylint: disable=too-many-branches
"""
Validate a fully qualified service name, instance or subtype. [rfc6763]
Returns fully qualified service name.
Domain names used by mDNS-SD take the following forms:
<sn> . <_tcp|_udp> . local.
<Instance> . <sn> . <_tcp|_udp> . local.
<sub>._sub . <sn> . <_tcp|_udp> . local.
1) must end with 'local.'
This is true because we are implementing mDNS and since the 'm' means
multi-cast, the 'local.' domain is mandatory.
2) local is preceded with either '_udp.' or '_tcp.' unless
strict is False
3) service name <sn> precedes <_tcp|_udp> unless
strict is False
The rules for Service Names [RFC6335] state that they may be no more
than fifteen characters long (not counting the mandatory underscore),
consisting of only letters, digits, and hyphens, must begin and end
with a letter or digit, must not contain consecutive hyphens, and
must contain at least one letter.
The instance name <Instance> and sub type <sub> may be up to 63 bytes.
The portion of the Service Instance Name is a user-
friendly name consisting of arbitrary Net-Unicode text [RFC5198]. It
MUST NOT contain ASCII control characters (byte values 0x00-0x1F and
0x7F) [RFC20] but otherwise is allowed to contain any characters,
without restriction, including spaces, uppercase, lowercase,
punctuation -- including dots -- accented characters, non-Roman text,
and anything else that may be represented using Net-Unicode.
:param type_: Type, SubType or service name to validate
:return: fully qualified service name (eg: _http._tcp.local.)
"""
if len(type_) > 256:
# https://datatracker.ietf.org/doc/html/rfc6763#section-7.2
raise BadTypeInNameException("Full name (%s) must be > 256 bytes" % type_)
if type_.endswith((_TCP_PROTOCOL_LOCAL_TRAILER, _NONTCP_PROTOCOL_LOCAL_TRAILER)):
remaining = type_[: -len(_TCP_PROTOCOL_LOCAL_TRAILER)].split('.')
trailer = type_[-len(_TCP_PROTOCOL_LOCAL_TRAILER) :]
has_protocol = True
elif strict:
raise BadTypeInNameException(
"Type '%s' must end with '%s' or '%s'"
% (type_, _TCP_PROTOCOL_LOCAL_TRAILER, _NONTCP_PROTOCOL_LOCAL_TRAILER)
)
elif type_.endswith(_LOCAL_TRAILER):
remaining = type_[: -len(_LOCAL_TRAILER)].split('.')
trailer = type_[-len(_LOCAL_TRAILER) + 1 :]
has_protocol = False
else:
raise BadTypeInNameException(f"Type '{type_}' must end with '{_LOCAL_TRAILER}'")
if strict or has_protocol:
service_name = remaining.pop()
if not service_name:
raise BadTypeInNameException("No Service name found")
if len(remaining) == 1 and len(remaining[0]) == 0:
raise BadTypeInNameException("Type '%s' must not start with '.'" % type_)
if service_name[0] != '_':
raise BadTypeInNameException("Service name (%s) must start with '_'" % service_name)
test_service_name = service_name[1:]
if strict and len(test_service_name) > 15:
# https://datatracker.ietf.org/doc/html/rfc6763#section-7.2
raise BadTypeInNameException("Service name (%s) must be <= 15 bytes" % test_service_name)
if '--' in test_service_name:
raise BadTypeInNameException("Service name (%s) must not contain '--'" % test_service_name)
if '-' in (test_service_name[0], test_service_name[-1]):
raise BadTypeInNameException(
"Service name (%s) may not start or end with '-'" % test_service_name
)
if not _HAS_A_TO_Z.search(test_service_name):
raise BadTypeInNameException(
"Service name (%s) must contain at least one letter (eg: 'A-Z')" % test_service_name
)
allowed_characters_re = (
_HAS_ONLY_A_TO_Z_NUM_HYPHEN if strict else _HAS_ONLY_A_TO_Z_NUM_HYPHEN_UNDERSCORE
)
if not allowed_characters_re.search(test_service_name):
raise BadTypeInNameException(
"Service name (%s) must contain only these characters: "
"A-Z, a-z, 0-9, hyphen ('-')%s" % (test_service_name, "" if strict else ", underscore ('_')")
)
else:
service_name = ''
if remaining and remaining[-1] == '_sub':
remaining.pop()
if len(remaining) == 0 or len(remaining[0]) == 0:
raise BadTypeInNameException("_sub requires a subtype name")
if len(remaining) > 1:
remaining = ['.'.join(remaining)]
if remaining:
length = len(remaining[0].encode('utf-8'))
if length > 63:
raise BadTypeInNameException("Too long: '%s'" % remaining[0])
if _HAS_ASCII_CONTROL_CHARS.search(remaining[0]):
raise BadTypeInNameException(
"Ascii control character 0x00-0x1F and 0x7F illegal in '%s'" % remaining[0]
)
return service_name + trailer
def possible_types(name: str) -> Set[str]:
"""Build a set of all possible types from a fully qualified name."""
labels = name.split('.')
label_count = len(labels)
types = set()
for count in range(label_count):
parts = labels[label_count - count - 4 :]
if not parts[0].startswith('_'):
break
types.add('.'.join(parts))
return types
0707010000004D000081A4000000000000000000000001631651AD00003B82000000000000000000000000000000000000002E00000000python-zeroconf-0.39.1/zeroconf/_utils/net.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import enum
import errno
import ipaddress
import socket
import struct
import sys
from typing import Any, List, Optional, Tuple, Union, cast
import ifaddr
from .._logger import log
from ..const import _IPPROTO_IPV6, _MDNS_ADDR, _MDNS_ADDR6, _MDNS_PORT
@enum.unique
class InterfaceChoice(enum.Enum):
Default = 1
All = 2
InterfacesType = Union[List[Union[str, int, Tuple[Tuple[str, int, int], int]]], InterfaceChoice]
@enum.unique
class ServiceStateChange(enum.Enum):
Added = 1
Removed = 2
Updated = 3
@enum.unique
class IPVersion(enum.Enum):
V4Only = 1
V6Only = 2
All = 3
# utility functions
def _is_v6_address(addr: bytes) -> bool:
return len(addr) == 16
def _encode_address(address: str) -> bytes:
is_ipv6 = ':' in address
address_family = socket.AF_INET6 if is_ipv6 else socket.AF_INET
return socket.inet_pton(address_family, address)
def get_all_addresses() -> List[str]:
return list({addr.ip for iface in ifaddr.get_adapters() for addr in iface.ips if addr.is_IPv4})
def get_all_addresses_v6() -> List[Tuple[Tuple[str, int, int], int]]:
# IPv6 multicast uses positive indexes for interfaces
# TODO: What about multi-address interfaces?
return list(
{(addr.ip, iface.index) for iface in ifaddr.get_adapters() for addr in iface.ips if addr.is_IPv6}
)
def ip6_to_address_and_index(adapters: List[Any], ip: str) -> Tuple[Tuple[str, int, int], int]:
if '%' in ip:
ip = ip[: ip.index('%')] # Strip scope_id.
ipaddr = ipaddress.ip_address(ip)
for adapter in adapters:
for adapter_ip in adapter.ips:
# IPv6 addresses are represented as tuples
if isinstance(adapter_ip.ip, tuple) and ipaddress.ip_address(adapter_ip.ip[0]) == ipaddr:
return (cast(Tuple[str, int, int], adapter_ip.ip), cast(int, adapter.index))
raise RuntimeError('No adapter found for IP address %s' % ip)
def interface_index_to_ip6_address(adapters: List[Any], index: int) -> Tuple[str, int, int]:
for adapter in adapters:
if adapter.index == index:
for adapter_ip in adapter.ips:
# IPv6 addresses are represented as tuples
if isinstance(adapter_ip.ip, tuple):
return cast(Tuple[str, int, int], adapter_ip.ip)
raise RuntimeError('No adapter found for index %s' % index)
def ip6_addresses_to_indexes(
interfaces: List[Union[str, int, Tuple[Tuple[str, int, int], int]]]
) -> List[Tuple[Tuple[str, int, int], int]]:
"""Convert IPv6 interface addresses to interface indexes.
IPv4 addresses are ignored.
:param interfaces: List of IP addresses and indexes.
:returns: List of indexes.
"""
result = []
adapters = ifaddr.get_adapters()
for iface in interfaces:
if isinstance(iface, int):
result.append((interface_index_to_ip6_address(adapters, iface), iface))
elif isinstance(iface, str) and ipaddress.ip_address(iface).version == 6:
result.append(ip6_to_address_and_index(adapters, iface))
return result
def normalize_interface_choice(
choice: InterfacesType, ip_version: IPVersion = IPVersion.V4Only
) -> List[Union[str, Tuple[Tuple[str, int, int], int]]]:
"""Convert the interfaces choice into internal representation.
:param choice: `InterfaceChoice` or list of interface addresses or indexes (IPv6 only).
:param ip_address: IP version to use (ignored if `choice` is a list).
:returns: List of IP addresses (for IPv4) and indexes (for IPv6).
"""
result: List[Union[str, Tuple[Tuple[str, int, int], int]]] = []
if choice is InterfaceChoice.Default:
if ip_version != IPVersion.V4Only:
# IPv6 multicast uses interface 0 to mean the default
result.append((('', 0, 0), 0))
if ip_version != IPVersion.V6Only:
result.append('0.0.0.0')
elif choice is InterfaceChoice.All:
if ip_version != IPVersion.V4Only:
result.extend(get_all_addresses_v6())
if ip_version != IPVersion.V6Only:
result.extend(get_all_addresses())
if not result:
raise RuntimeError(
'No interfaces to listen on, check that any interfaces have IP version %s' % ip_version
)
elif isinstance(choice, list):
# First, take IPv4 addresses.
result = [i for i in choice if isinstance(i, str) and ipaddress.ip_address(i).version == 4]
# Unlike IP_ADD_MEMBERSHIP, IPV6_JOIN_GROUP requires interface indexes.
result += ip6_addresses_to_indexes(choice)
else:
raise TypeError("choice must be a list or InterfaceChoice, got %r" % choice)
return result
def disable_ipv6_only_or_raise(s: socket.socket) -> None:
"""Make V6 sockets work for both V4 and V6 (required for Windows)."""
try:
s.setsockopt(_IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
except OSError:
log.error('Support for dual V4-V6 sockets is not present, use IPVersion.V4 or IPVersion.V6')
raise
def set_so_reuseport_if_available(s: socket.socket) -> None:
"""Set SO_REUSEADDR on a socket if available."""
# SO_REUSEADDR should be equivalent to SO_REUSEPORT for
# multicast UDP sockets (p 731, "TCP/IP Illustrated,
# Volume 2"), but some BSD-derived systems require
# SO_REUSEPORT to be specified explicitly. Also, not all
# versions of Python have SO_REUSEPORT available.
# Catch OSError and socket.error for kernel versions <3.9 because lacking
# SO_REUSEPORT support.
if not hasattr(socket, 'SO_REUSEPORT'):
return
try:
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1) # pylint: disable=no-member
except OSError as err:
if err.errno != errno.ENOPROTOOPT:
raise
def set_mdns_port_socket_options_for_ip_version(
s: socket.socket, bind_addr: Union[Tuple[str], Tuple[str, int, int]], ip_version: IPVersion
) -> None:
"""Set ttl/hops and loop for mdns port."""
if ip_version != IPVersion.V6Only:
ttl = struct.pack(b'B', 255)
loop = struct.pack(b'B', 1)
# OpenBSD needs the ttl and loop values for the IP_MULTICAST_TTL and
# IP_MULTICAST_LOOP socket options as an unsigned char.
try:
s.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, ttl)
s.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_LOOP, loop)
except OSError as e:
if bind_addr[0] != '' or get_errno(e) != errno.EINVAL: # Fails to set on MacOS
raise
if ip_version != IPVersion.V4Only:
# However, char doesn't work here (at least on Linux)
s.setsockopt(_IPPROTO_IPV6, socket.IPV6_MULTICAST_HOPS, 255)
s.setsockopt(_IPPROTO_IPV6, socket.IPV6_MULTICAST_LOOP, True)
def new_socket(
bind_addr: Union[Tuple[str], Tuple[str, int, int]],
port: int = _MDNS_PORT,
ip_version: IPVersion = IPVersion.V4Only,
apple_p2p: bool = False,
) -> Optional[socket.socket]:
log.debug(
'Creating new socket with port %s, ip_version %s, apple_p2p %s and bind_addr %r',
port,
ip_version,
apple_p2p,
bind_addr,
)
socket_family = socket.AF_INET if ip_version == IPVersion.V4Only else socket.AF_INET6
s = socket.socket(socket_family, socket.SOCK_DGRAM)
if ip_version == IPVersion.All:
disable_ipv6_only_or_raise(s)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
set_so_reuseport_if_available(s)
if port == _MDNS_PORT:
set_mdns_port_socket_options_for_ip_version(s, bind_addr, ip_version)
if apple_p2p:
# SO_RECV_ANYIF = 0x1104
# https://opensource.apple.com/source/xnu/xnu-4570.41.2/bsd/sys/socket.h
s.setsockopt(socket.SOL_SOCKET, 0x1104, 1)
bind_tup = (bind_addr[0], port, *bind_addr[1:])
try:
s.bind(bind_tup)
except OSError as ex:
if ex.errno == errno.EADDRNOTAVAIL:
log.warning(
'Address not available when binding to %s, ' 'it is expected to happen on some systems',
bind_tup,
)
return None
raise
log.debug('Created socket %s', s)
return s
def add_multicast_member(
listen_socket: socket.socket,
interface: Union[str, Tuple[Tuple[str, int, int], int]],
) -> bool:
# This is based on assumptions in normalize_interface_choice
is_v6 = isinstance(interface, tuple)
err_einval = {errno.EINVAL}
if sys.platform == 'win32':
# No WSAEINVAL definition in typeshed
err_einval |= {cast(Any, errno).WSAEINVAL} # pylint: disable=no-member
log.debug('Adding %r (socket %d) to multicast group', interface, listen_socket.fileno())
try:
if is_v6:
try:
mdns_addr6_bytes = socket.inet_pton(socket.AF_INET6, _MDNS_ADDR6)
except OSError:
log.info(
'Unable to translate IPv6 address when adding %s to multicast group, '
'this can happen if IPv6 is disabled on the system',
interface,
)
return False
iface_bin = struct.pack('@I', cast(int, interface[1]))
_value = mdns_addr6_bytes + iface_bin
listen_socket.setsockopt(_IPPROTO_IPV6, socket.IPV6_JOIN_GROUP, _value)
else:
_value = socket.inet_aton(_MDNS_ADDR) + socket.inet_aton(cast(str, interface))
listen_socket.setsockopt(socket.IPPROTO_IP, socket.IP_ADD_MEMBERSHIP, _value)
except OSError as e:
_errno = get_errno(e)
if _errno == errno.EADDRINUSE:
log.info(
'Address in use when adding %s to multicast group, '
'it is expected to happen on some systems',
interface,
)
return False
if _errno == errno.EADDRNOTAVAIL:
log.info(
'Address not available when adding %s to multicast '
'group, it is expected to happen on some systems',
interface,
)
return False
if _errno in err_einval:
log.info('Interface of %s does not support multicast, ' 'it is expected in WSL', interface)
return False
if _errno == errno.ENOPROTOOPT:
log.info(
'Failed to set socket option on %s, this can happen if '
'the network adapter is in a disconnected state',
interface,
)
return False
if is_v6 and _errno == errno.ENODEV:
log.info(
'Address in use when adding %s to multicast group, '
'it is expected to happen when the device does not have ipv6',
interface,
)
return False
raise
return True
def new_respond_socket(
interface: Union[str, Tuple[Tuple[str, int, int], int]],
apple_p2p: bool = False,
) -> Optional[socket.socket]:
is_v6 = isinstance(interface, tuple)
respond_socket = new_socket(
ip_version=(IPVersion.V6Only if is_v6 else IPVersion.V4Only),
apple_p2p=apple_p2p,
bind_addr=cast(Tuple[Tuple[str, int, int], int], interface)[0] if is_v6 else (cast(str, interface),),
)
if not respond_socket:
return None
log.debug('Configuring socket %s with multicast interface %s', respond_socket, interface)
if is_v6:
iface_bin = struct.pack('@I', cast(int, interface[1]))
respond_socket.setsockopt(_IPPROTO_IPV6, socket.IPV6_MULTICAST_IF, iface_bin)
else:
respond_socket.setsockopt(
socket.IPPROTO_IP, socket.IP_MULTICAST_IF, socket.inet_aton(cast(str, interface))
)
return respond_socket
def create_sockets(
interfaces: InterfacesType = InterfaceChoice.All,
unicast: bool = False,
ip_version: IPVersion = IPVersion.V4Only,
apple_p2p: bool = False,
) -> Tuple[Optional[socket.socket], List[socket.socket]]:
if unicast:
listen_socket = None
else:
listen_socket = new_socket(ip_version=ip_version, apple_p2p=apple_p2p, bind_addr=('',))
normalized_interfaces = normalize_interface_choice(interfaces, ip_version)
# If we are using InterfaceChoice.Default we can use
# a single socket to listen and respond.
if not unicast and interfaces is InterfaceChoice.Default:
for i in normalized_interfaces:
add_multicast_member(cast(socket.socket, listen_socket), i)
return listen_socket, [cast(socket.socket, listen_socket)]
respond_sockets = []
for i in normalized_interfaces:
if not unicast:
if add_multicast_member(cast(socket.socket, listen_socket), i):
respond_socket = new_respond_socket(i, apple_p2p=apple_p2p)
else:
respond_socket = None
else:
respond_socket = new_socket(
port=0,
ip_version=ip_version,
apple_p2p=apple_p2p,
bind_addr=i[0] if isinstance(i, tuple) else (i,),
)
if respond_socket is not None:
respond_sockets.append(respond_socket)
return listen_socket, respond_sockets
def get_errno(e: Exception) -> int:
assert isinstance(e, socket.error)
return cast(int, e.args[0])
def can_send_to(ipv6_socket: bool, address: str) -> bool:
"""Check if the address type matches the socket type.
This function does not validate if the address is a valid
ipv6 or ipv4 address.
"""
return ":" in address if ipv6_socket else ":" not in address
def autodetect_ip_version(interfaces: InterfacesType) -> IPVersion:
"""Auto detect the IP version when it is not provided."""
if isinstance(interfaces, list):
has_v6 = any(
isinstance(i, int) or (isinstance(i, str) and ipaddress.ip_address(i).version == 6)
for i in interfaces
)
has_v4 = any(isinstance(i, str) and ipaddress.ip_address(i).version == 4 for i in interfaces)
if has_v4 and has_v6:
return IPVersion.All
if has_v6:
return IPVersion.V6Only
return IPVersion.V4Only
0707010000004E000081A4000000000000000000000001631651AD0000051C000000000000000000000000000000000000002F00000000python-zeroconf-0.39.1/zeroconf/_utils/time.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import time
def current_time_millis() -> float:
"""Current time in milliseconds.
The current implemention uses `time.monotonic`
but may change in the future.
"""
return time.monotonic() * 1000
def millis_to_seconds(millis: float) -> float:
"""Convert milliseconds to seconds."""
return millis / 1000.0
0707010000004F000081A4000000000000000000000001631651AD000029CB000000000000000000000000000000000000002B00000000python-zeroconf-0.39.1/zeroconf/asyncio.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import asyncio
import contextlib
from types import TracebackType # noqa # used in type hints
from typing import Awaitable, Callable, Dict, List, Optional, Tuple, Type, Union
from ._core import Zeroconf
from ._dns import DNSQuestionType
from ._services import ServiceListener
from ._services.browser import _ServiceBrowserBase
from ._services.info import ServiceInfo
from ._services.types import ZeroconfServiceTypes
from ._utils.net import IPVersion, InterfaceChoice, InterfacesType
from .const import (
_BROWSER_TIME,
_MDNS_PORT,
_SERVICE_TYPE_ENUMERATION_NAME,
)
__all__ = [
"AsyncZeroconf",
"AsyncServiceInfo",
"AsyncServiceBrowser",
"AsyncZeroconfServiceTypes",
]
class AsyncServiceInfo(ServiceInfo):
"""An async version of ServiceInfo."""
class AsyncServiceBrowser(_ServiceBrowserBase):
"""Used to browse for a service for specific type(s).
Constructor parameters are as follows:
* `zc`: A Zeroconf instance
* `type_`: fully qualified service type name
* `handler`: ServiceListener or Callable that knows how to process ServiceStateChange events
* `listener`: ServiceListener
* `addr`: address to send queries (will default to multicast)
* `port`: port to send queries (will default to mdns 5353)
* `delay`: The initial delay between answering questions
* `question_type`: The type of questions to ask (DNSQuestionType.QM or DNSQuestionType.QU)
The listener object will have its add_service() and
remove_service() methods called when this browser
discovers changes in the services availability.
"""
def __init__(
self,
zeroconf: 'Zeroconf',
type_: Union[str, list],
handlers: Optional[Union[ServiceListener, List[Callable[..., None]]]] = None,
listener: Optional[ServiceListener] = None,
addr: Optional[str] = None,
port: int = _MDNS_PORT,
delay: int = _BROWSER_TIME,
question_type: Optional[DNSQuestionType] = None,
) -> None:
super().__init__(zeroconf, type_, handlers, listener, addr, port, delay, question_type)
self._async_start()
async def async_cancel(self) -> None:
"""Cancel the browser."""
self._async_cancel()
class AsyncZeroconfServiceTypes(ZeroconfServiceTypes):
"""An async version of ZeroconfServiceTypes."""
@classmethod
async def async_find(
cls,
aiozc: Optional['AsyncZeroconf'] = None,
timeout: Union[int, float] = 5,
interfaces: InterfacesType = InterfaceChoice.All,
ip_version: Optional[IPVersion] = None,
) -> Tuple[str, ...]:
"""
Return all of the advertised services on any local networks.
:param aiozc: AsyncZeroconf() instance. Pass in if already have an
instance running or if non-default interfaces are needed
:param timeout: seconds to wait for any responses
:param interfaces: interfaces to listen on.
:param ip_version: IP protocol version to use.
:return: tuple of service type strings
"""
local_zc = aiozc or AsyncZeroconf(interfaces=interfaces, ip_version=ip_version)
listener = cls()
async_browser = AsyncServiceBrowser(
local_zc.zeroconf, _SERVICE_TYPE_ENUMERATION_NAME, listener=listener
)
# wait for responses
await asyncio.sleep(timeout)
await async_browser.async_cancel()
# close down anything we opened
if aiozc is None:
await local_zc.async_close()
return tuple(sorted(listener.found_services))
class AsyncZeroconf:
"""Implementation of Zeroconf Multicast DNS Service Discovery
Supports registration, unregistration, queries and browsing.
The async version is currently a wrapper around Zeroconf which
is now also async. It is expected that an asyncio event loop
is already running before creating the AsyncZeroconf object.
"""
def __init__(
self,
interfaces: InterfacesType = InterfaceChoice.All,
unicast: bool = False,
ip_version: Optional[IPVersion] = None,
apple_p2p: bool = False,
zc: Optional[Zeroconf] = None,
) -> None:
"""Creates an instance of the Zeroconf class, establishing
multicast communications, and listening.
:param interfaces: :class:`InterfaceChoice` or a list of IP addresses
(IPv4 and IPv6) and interface indexes (IPv6 only).
IPv6 notes for non-POSIX systems:
* `InterfaceChoice.All` is an alias for `InterfaceChoice.Default`
on Python versions before 3.8.
Also listening on loopback (``::1``) doesn't work, use a real address.
:param ip_version: IP versions to support. If `choice` is a list, the default is detected
from it. Otherwise defaults to V4 only for backward compatibility.
:param apple_p2p: use AWDL interface (only macOS)
"""
self.zeroconf = zc or Zeroconf(
interfaces=interfaces,
unicast=unicast,
ip_version=ip_version,
apple_p2p=apple_p2p,
)
self.async_browsers: Dict[ServiceListener, AsyncServiceBrowser] = {}
async def async_register_service(
self,
info: ServiceInfo,
ttl: Optional[int] = None,
allow_name_change: bool = False,
cooperating_responders: bool = False,
) -> Awaitable:
"""Registers service information to the network with a default TTL.
Zeroconf will then respond to requests for information for that
service. The name of the service may be changed if needed to make
it unique on the network. Additionally multiple cooperating responders
can register the same service on the network for resilience
(if you want this behavior set `cooperating_responders` to `True`).
The service will be broadcast in a task. This task is returned
and therefore can be awaited if necessary.
"""
return await self.zeroconf.async_register_service(
info, ttl, allow_name_change, cooperating_responders
)
async def async_unregister_all_services(self) -> None:
"""Unregister all registered services.
Unlike async_register_service and async_unregister_service, this
method does not return a future and is always expected to be
awaited since its only called at shutdown.
"""
await self.zeroconf.async_unregister_all_services()
async def async_unregister_service(self, info: ServiceInfo) -> Awaitable:
"""Unregister a service.
The service will be broadcast in a task. This task is returned
and therefore can be awaited if necessary.
"""
return await self.zeroconf.async_unregister_service(info)
async def async_update_service(self, info: ServiceInfo) -> Awaitable:
"""Registers service information to the network with a default TTL.
Zeroconf will then respond to requests for information for that
service.
The service will be broadcast in a task. This task is returned
and therefore can be awaited if necessary.
"""
return await self.zeroconf.async_update_service(info)
async def async_close(self) -> None:
"""Ends the background threads, and prevent this instance from
servicing further queries."""
if not self.zeroconf.done:
with contextlib.suppress(asyncio.TimeoutError):
await asyncio.wait_for(self.zeroconf.async_wait_for_start(), timeout=1)
await self.async_remove_all_service_listeners()
await self.async_unregister_all_services()
await self.zeroconf._async_close() # pylint: disable=protected-access
async def async_get_service_info(
self, type_: str, name: str, timeout: int = 3000, question_type: Optional[DNSQuestionType] = None
) -> Optional[AsyncServiceInfo]:
"""Returns network's service information for a particular
name and type, or None if no service matches by the timeout,
which defaults to 3 seconds."""
info = AsyncServiceInfo(type_, name)
if await info.async_request(self.zeroconf, timeout, question_type):
return info
return None
async def async_add_service_listener(self, type_: str, listener: ServiceListener) -> None:
"""Adds a listener for a particular service type. This object
will then have its add_service and remove_service methods called when
services of that type become available and unavailable."""
await self.async_remove_service_listener(listener)
self.async_browsers[listener] = AsyncServiceBrowser(self.zeroconf, type_, listener)
async def async_remove_service_listener(self, listener: ServiceListener) -> None:
"""Removes a listener from the set that is currently listening."""
if listener in self.async_browsers:
await self.async_browsers[listener].async_cancel()
del self.async_browsers[listener]
async def async_remove_all_service_listeners(self) -> None:
"""Removes a listener from the set that is currently listening."""
await asyncio.gather(
*(self.async_remove_service_listener(listener) for listener in list(self.async_browsers))
)
async def __aenter__(self) -> 'AsyncZeroconf':
return self
async def __aexit__(
self,
exc_type: Optional[Type[BaseException]],
exc_val: Optional[BaseException],
exc_tb: Optional[TracebackType],
) -> Optional[bool]:
await self.async_close()
return None
07070100000050000081A4000000000000000000000001631651AD0000114A000000000000000000000000000000000000002900000000python-zeroconf-0.39.1/zeroconf/const.py""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
This module provides a framework for the use of DNS Service Discovery
using IP multicast.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
"""
import re
import socket
# Some timing constants
_UNREGISTER_TIME = 125 # ms
_CHECK_TIME = 175 # ms
_REGISTER_TIME = 225 # ms
_LISTENER_TIME = 200 # ms
_BROWSER_TIME = 1000 # ms
_DUPLICATE_QUESTION_INTERVAL = _BROWSER_TIME - 1 # ms
_BROWSER_BACKOFF_LIMIT = 3600 # s
_CACHE_CLEANUP_INTERVAL = 10000 # ms
_LOADED_SYSTEM_TIMEOUT = 10 # s
_STARTUP_TIMEOUT = 9 # s must be lower than _LOADED_SYSTEM_TIMEOUT
_ONE_SECOND = 1000 # ms
# If the system is loaded or the event
# loop was blocked by another task that was doing I/O in the loop
# (shouldn't happen but it does in practice) we need to give
# a buffer timeout to ensure a coroutine can finish before
# the future times out
# Some DNS constants
_MDNS_ADDR = '224.0.0.251'
_MDNS_ADDR6 = 'ff02::fb'
_MDNS_PORT = 5353
_DNS_PORT = 53
_DNS_HOST_TTL = 120 # two minute for host records (A, SRV etc) as-per RFC6762
_DNS_OTHER_TTL = 4500 # 75 minutes for non-host records (PTR, TXT etc) as-per RFC6762
# Currently we enforce a minimum TTL for PTR records to avoid
# ServiceBrowsers generating excessive queries refresh queries.
# Apple uses a 15s minimum TTL, however we do not have the same
# level of rate limit and safe guards so we use 1/4 of the recommended value
_DNS_PTR_MIN_TTL = _DNS_OTHER_TTL / 4
_DNS_PACKET_HEADER_LEN = 12
_MAX_MSG_TYPICAL = 1460 # unused
_MAX_MSG_ABSOLUTE = 8966
_FLAGS_QR_MASK = 0x8000 # query response mask
_FLAGS_QR_QUERY = 0x0000 # query
_FLAGS_QR_RESPONSE = 0x8000 # response
_FLAGS_AA = 0x0400 # Authoritative answer
_FLAGS_TC = 0x0200 # Truncated
_FLAGS_RD = 0x0100 # Recursion desired
_FLAGS_RA = 0x8000 # Recursion available
_FLAGS_Z = 0x0040 # Zero
_FLAGS_AD = 0x0020 # Authentic data
_FLAGS_CD = 0x0010 # Checking disabled
_CLASS_IN = 1
_CLASS_CS = 2
_CLASS_CH = 3
_CLASS_HS = 4
_CLASS_NONE = 254
_CLASS_ANY = 255
_CLASS_MASK = 0x7FFF
_CLASS_UNIQUE = 0x8000
_TYPE_A = 1
_TYPE_NS = 2
_TYPE_MD = 3
_TYPE_MF = 4
_TYPE_CNAME = 5
_TYPE_SOA = 6
_TYPE_MB = 7
_TYPE_MG = 8
_TYPE_MR = 9
_TYPE_NULL = 10
_TYPE_WKS = 11
_TYPE_PTR = 12
_TYPE_HINFO = 13
_TYPE_MINFO = 14
_TYPE_MX = 15
_TYPE_TXT = 16
_TYPE_AAAA = 28
_TYPE_SRV = 33
_TYPE_NSEC = 47
_TYPE_ANY = 255
# Mapping constants to names
_CLASSES = {
_CLASS_IN: "in",
_CLASS_CS: "cs",
_CLASS_CH: "ch",
_CLASS_HS: "hs",
_CLASS_NONE: "none",
_CLASS_ANY: "any",
}
_TYPES = {
_TYPE_A: "a",
_TYPE_NS: "ns",
_TYPE_MD: "md",
_TYPE_MF: "mf",
_TYPE_CNAME: "cname",
_TYPE_SOA: "soa",
_TYPE_MB: "mb",
_TYPE_MG: "mg",
_TYPE_MR: "mr",
_TYPE_NULL: "null",
_TYPE_WKS: "wks",
_TYPE_PTR: "ptr",
_TYPE_HINFO: "hinfo",
_TYPE_MINFO: "minfo",
_TYPE_MX: "mx",
_TYPE_TXT: "txt",
_TYPE_AAAA: "quada",
_TYPE_SRV: "srv",
_TYPE_ANY: "any",
_TYPE_NSEC: "nsec",
}
_HAS_A_TO_Z = re.compile(r'[A-Za-z]')
_HAS_ONLY_A_TO_Z_NUM_HYPHEN = re.compile(r'^[A-Za-z0-9\-]+$')
_HAS_ONLY_A_TO_Z_NUM_HYPHEN_UNDERSCORE = re.compile(r'^[A-Za-z0-9\-\_]+$')
_HAS_ASCII_CONTROL_CHARS = re.compile(r'[\x00-\x1f\x7f]')
_EXPIRE_REFRESH_TIME_PERCENT = 75
_LOCAL_TRAILER = '.local.'
_TCP_PROTOCOL_LOCAL_TRAILER = '._tcp.local.'
_NONTCP_PROTOCOL_LOCAL_TRAILER = '._udp.local.'
# https://datatracker.ietf.org/doc/html/rfc6763#section-9
_SERVICE_TYPE_ENUMERATION_NAME = "_services._dns-sd._udp.local."
try:
_IPPROTO_IPV6 = socket.IPPROTO_IPV6
except AttributeError:
# Sigh: https://bugs.python.org/issue29515
_IPPROTO_IPV6 = 41
07070100000051000081A4000000000000000000000001631651AD00000000000000000000000000000000000000000000002900000000python-zeroconf-0.39.1/zeroconf/py.typed07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!1338 blocks
