File dracut-crypt-ssh-1.0.7+20181029.2204f72.obscpio of Package dracut-crypt-ssh

Overview Repositories Revisions Requests Users Attributes Meta

File dracut-crypt-ssh-1.0.7+20181029.2204f72.obscpio of Package dracut-crypt-ssh

07070100000000000081A4000003E800000064000000015BD6D715000046AC000000000000000000000000000000000000003000000000dracut-crypt-ssh-1.0.7+20181029.2204f72/COPYING                    GNU GENERAL PUBLIC LICENSE
                       Version 2, June 1991

Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

Preamble

The licenses for most software are designed to take away your
freedom to share and change it.  By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users.  This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it.  (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.)  You can apply it to
your programs, too.

When we speak of free software, we are referring to freedom, not
price.  Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.

To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.

For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have.  You must make sure that they, too, receive or can get the
source code.  And you must show them these terms so they know their
rights.

We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.

Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software.  If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.

Finally, any free program is threatened constantly by software
patents.  We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary.  To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.

The precise terms and conditions for copying, distribution and
modification follow.

GNU GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License.  The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language.  (Hereinafter, translation is included without limitation in
the term "modification".)  Each licensee is addressed as "you".

Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope.  The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.

1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.

You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.

2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:

a) You must cause the modified files to carry prominent notices
    stating that you changed the files and the date of any change.

b) You must cause any work that you distribute or publish, that in
    whole or in part contains or is derived from the Program or any
    part thereof, to be licensed as a whole at no charge to all third
    parties under the terms of this License.

c) If the modified program normally reads commands interactively
    when run, you must cause it, when started running for such
    interactive use in the most ordinary way, to print or display an
    announcement including an appropriate copyright notice and a
    notice that there is no warranty (or else, saying that you provide
    a warranty) and that users may redistribute the program under
    these conditions, and telling the user how to view a copy of this
    License.  (Exception: if the Program itself is interactive but
    does not normally print such an announcement, your work based on
    the Program is not required to print an announcement.)

These requirements apply to the modified work as a whole.  If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works.  But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.

Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.

In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.

3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:

a) Accompany it with the complete corresponding machine-readable
    source code, which must be distributed under the terms of Sections
    1 and 2 above on a medium customarily used for software interchange; or,

b) Accompany it with a written offer, valid for at least three
    years, to give any third party, for a charge no more than your
    cost of physically performing source distribution, a complete
    machine-readable copy of the corresponding source code, to be
    distributed under the terms of Sections 1 and 2 above on a medium
    customarily used for software interchange; or,

c) Accompany it with the information you received as to the offer
    to distribute corresponding source code.  (This alternative is
    allowed only for noncommercial distribution and only if you
    received the program in object code or executable form with such
    an offer, in accord with Subsection b above.)

The source code for a work means the preferred form of the work for
making modifications to it.  For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable.  However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.

If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.

4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License.  Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.

5. You are not required to accept this License, since you have not
signed it.  However, nothing else grants you permission to modify or
distribute the Program or its derivative works.  These actions are
prohibited by law if you do not accept this License.  Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.

6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions.  You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.

7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all.  For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.

If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.

It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices.  Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.

This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.

8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded.  In such case, this License incorporates
the limitation as if written in the body of this License.

9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time.  Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.

Each version is given a distinguishing version number.  If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation.  If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.

10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission.  For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this.  Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.

NO WARRANTY

11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.

12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

END OF TERMS AND CONDITIONS

How to Apply These Terms to Your New Programs

If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

<one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Also add information on how to contact you by electronic and paper mail.

If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:

Gnomovision version 69, Copyright (C) year name of author
    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.

You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary.  Here is a sample; alter the names:

Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  `Gnomovision' (which makes passes at compilers) written by James Hacker.

<signature of Ty Coon>, 1 April 1989
  Ty Coon, President of Vice

This General Public License does not permit incorporating your program into
proprietary programs.  If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.
07070100000001000081A4000003E800000064000000015BD6D715000001FD000000000000000000000000000000000000003200000000dracut-crypt-ssh-1.0.7+20181029.2204f72/COPYRIGHTThis project was originally named "dracut-crypt-sshd" and "dracut-earlyssh"
before it became "dracut-crypt-ssh". It was licensed under version 2.0
of the WTFPL <http://www.wtfpl.net/txt/copying/>.

The original copyright statement reads as follows:
  Copyright (C) 2012 Mike Kazantsev <mk.fraggod@gmail.com>

The following contributors agreed to change the license to GPLv2.
  Michael Curtis <michael@moltenmercury.org>
  Maciej Żenczykowski <zenczykowski@gmail.com>
  Artem Sidorenko <artem@2realities.com>
07070100000002000081A4000003E800000064000000015BD6D7150000027C000000000000000000000000000000000000003100000000dracut-crypt-ssh-1.0.7+20181029.2204f72/Makefileinclude config.mk

export DESTDIR=
export MODULEDIR=${DESTDIR}$(DRACUT_MODULEDIR)

ifeq ($(NEED_CRYPTSETTLE),1)
	SUBDIRS=modules/60crypt-ssh modules/cryptsettle-patch
else
	SUBDIRS=modules/60crypt-ssh
endif

.PHONY: install all clean dist $(SUBDIRS)

all: $(SUBDIRS)

install: $(SUBDIRS)
	mkdir -p $(DESTDIR)/etc/dracut.conf.d/
	cp crypt-ssh.conf $(DESTDIR)/etc/dracut.conf.d/

clean: $(SUBDIRS)
	rm -f dracut-crypt-ssh-*gz config.mk

$(SUBDIRS):
	$(MAKE) -C $@ $(MAKECMDGOALS)

DISTNAME=dracut-crypt-ssh-$(shell git describe --tags | sed s:v::)
dist:
	git archive --format=tar --prefix=$(DISTNAME)/ HEAD | gzip -9 > $(DISTNAME).tar.gz
07070100000003000081A4000003E800000064000000015BD6D71500003365000000000000000000000000000000000000003200000000dracut-crypt-ssh-1.0.7+20181029.2204f72/README.mddracut-crypt-ssh
----------------

# 1. Introduction

The crypt-ssh dracut module allows remote unlocking of systems with
full disk encryption via ssh.

There are a number of reasons why you would want to do this:
  1. It provides a way of entering encryption keys for a number of servers without console switching
  2. It allows booting of remote or co-located encrypted servers without console access

Users are strictly authenticated using their SSH public keys. These can be either:
`/root/.ssh/authorized_keys` or a custom file (`dropbear_acl` option). Depending
on your environment, it may make sense to make the preboot authorized_keys file
different from the normal one.

Plain text password authentication and port forwarding are disabled.

# 2. Installation

We recommend installation via packages, or build manually if unavailable.
You are encouraged to get in contact with us via [GitHub issues](https://github.com/dracut-crypt-ssh/dracut-crypt-ssh/issues)
if you are able to provide packages for other distributions.

## 2.1. Installation from packages on Fedora/RHEL/CentOS

We currently provide packages for RHEL+CentOS 7 as well as Fedora 22+
via a [COPR repository](https://copr.fedorainfracloud.org/coprs/rbu/dracut-crypt-ssh/).

Installation via dnf (Fedora):

# dnf copr enable rbu/dracut-crypt-ssh
    # dnf install dracut-crypt-ssh

Installation via yum (CentOS 7):

# yum install epel-release
    # wget -O /etc/yum.repos.d/rbu-dracut-crypt-ssh-epel-7.repo https://copr.fedorainfracloud.org/coprs/rbu/dracut-crypt-ssh/repo/epel-7/rbu-dracut-crypt-ssh-epel-7.repo
    # yum install dracut-crypt-ssh

## 2.2. Installation from sources on Fedora/RHEL/CentOS

Install build dependencies (example commands for RPM systems). When building
on RHEL, be sure to enable EPEL (`yum install epel-release`).

# yum install dropbear dracut dracut-network openssh
    # yum install libblkid-devel gcc

Retrieve a copy the source and build:

$ git clone https://github.com/dracut-crypt-ssh/dracut-crypt-ssh.git
    $ cd dracut-crypt-ssh
    $ ./configure
    $ make
    $ sudo make install

## 2.3. Installation on other distributions

- Gentoo: available in Portage, just `emerge sys-kernel/dracut-crypt-ssh`.
- [Arch Linux](https://aur.archlinux.org/packages/dracut-crypt-ssh/), [Arch Linux Git](https://aur.archlinux.org/packages/dracut-crypt-ssh-git/)

# 3. Usage

## 3.1. Building the initramfs

After the first installation and every time you update the `dracut-crypt-ssh` configuration,
it is required to rebuild the initramfs:

# dracut --force

## 3.2 Enable network access during boot

Since you need network access before booting from the root partition, you need to configure
this via GRUB, if you have not done so before.

The minimal change is enabling DHCP. Edit the `/etc/default/grub` file and append
to the end of the `GRUB_CMDLINE_LINUX`:

/etc/default/grub:
        ...
        GRUB_CMDLINE_LINUX="... rd.neednet=1 ip=dhcp"
        ...

Afterwards, regenerate your GRUB config:

# grub2-mkconfig --output /etc/grub2.cfg

For a static network configuration, use something along the lines of

GRUB_CMDLINE_LINUX="... rd.neednet=1 ip=192.168.0.100::192.168.0.1:255.255.255.0:centos:enp0s8:off"

Refer to the [network documentation of dracut](https://www.kernel.org/pub/linux/utils/boot/dracut/dracut.html#_network)
for more options (`man dracut.cmdline`).

## 3.3. Unlocking the volumes interactively

When rebooting the system, dropbear sshd is started by the initramfs. You should
be able to login and unlock the volumes:

% ssh -p 222 root@192.168.0.100
    # console_peek   # to see what's on the console
    # console_auth   # asks you for the passphrase and sends it to console
    Passphrase:

If unlocking the device succeeded, the initramfs will clean up itself
and dropbear terminates itself and your connection.

## 3.4. Unlocking using the unlock command

The `unlock` binary reads a passphrase from stdin, parses `/etc/crypttab`
and attempts to call `cryptsetup luksOpen` on all luks-encrypted drives that
don't have a keyfile, passing the passphrase that unlock got in stdin to luksOpen.

What this means in practice is you can do:

% ssh root@remote.server -p 222 unlock < passwordFile

or:

% gpg -d password.gpg | ssh root@remote.server -p 222 unlock

If you want to only unlock specific drives / LUKS volumes, you can provide
wildcards on the command line, e.g.

% ssh root@remote.server -p 222 unlock luks-3467c luks-34c13

`unlock` will search the crypttab for mapper names (first column in
`/etc/crypttab`) that start with the listed names.  Volumes that match via this
method may have a keyfile listed in `/etc/crypttab`, it will be assumed that you
want to unlock the volume/s with an alternative key.
Note that the names provided are really wildcards, and by convention/default
all mappers start with luks-, so you can force `unlock` to try all drives simply
by doing something like 'unlock luks-'.

In all cases, `unlock` will only consider the process a success only if all
eligible volumes are unlocked successfully.  This means:

1. All the associated devices must be available at boot / unlock time
  2. The passphrase must be accepted for all eligible volumes
  3. cryptsetup luksOpen should not exit for any other reason.

In short, if you have more than one volume in `/etc/crypttab`, you will need to
be careful about how use this tool.

If the process is successful, `unlock` will launch the script
`/sbin/unlock-reap-success`. This will attempt to kill systemd-cryptsetup, and
failing that, attempt to kill cryptroot-ask. On RHEL6 & 7, this aborts the
builtin decrypt password request processes and allows the boot process to
proceed. Note that the plymouth splash screen on RHEL6 (if you happen to be
watching the console...) will still appear to ask for your password, but this
is an artifact. Disable plymouth (rhgb command line) if this annoys you.

You might want to limit access only to the unlock binary, just add
command="unlock" to your authorized_keys before the key, e.g.

command="unlock" ssh-rsa .....

# 4. Configuration

The configuration is stored in the crypt-ssh.conf, usually located in `/etc/dracut.conf.d/`.

The following options are available (see the config file for detailed description):
 - `dropbear_port` (default: `222`) - port ssh daemon should listen on
 - `dropbear_rsa_key`, `dropbear_ecdsa_key` (default: `GENERATE`) - Source of the keys, possible options:
   - `SYSTEM` - copy the private keys from the encrypted system (not recommended)
   - `GENERATE` - generate a new keys (during the creation of initramfs)
   - path - key file in OpenSSH format as generared by ssh-keygen (a public file with '.pub' ending must be present too)
 - `dropbear_acl` (default: `/root/.ssh/authorized_keys`) - Keys which allowed to login into initramfs

After any configuration change, you have to rebuild the initramfs as the
configuration takes effect during the building the initramfs.

## 4.1 Generating keys for dracut-crypt-ssh (recommended)

By default, dracut-crypt-ssh generates an SSH key whenever the image is built
(`GENERATE`), which either creates administrative overhead or weakens the
security of the SSH connection as keys will be regenerated transparently during
system updates. It is highly recommended to generate SSH keys specifically
for dracut-crypt-ssh and validate these keys during the initial connection.
The following steps should give you an idea how to set this up. You can change
the directory as you wish. Keep these SSH keys safe, but also keep in mind that
they will be copied to the initramfs on the unencrypted boot partition (where
they may be extracted or changed).

# umask 0077
    # mkdir /root/dracut-crypt-ssh-keys
    # ssh-keygen -t rsa -f /root/dracut-crypt-ssh-keys/ssh_dracut_rsa_key
    # ssh-keygen -t ecdsa -f /root/dracut-crypt-ssh-keys/ssh_dracut_ecdsa_key

Point to these keys in the configuration `/etc/dracut.conf.d/crypt-ssh.conf`:

dropbear_rsa_key="/root/dracut-crypt-ssh-keys/ssh_dracut_rsa_key"
    dropbear_ecdsa_key="/root/dracut-crypt-ssh-keys/ssh_dracut_ecdsa_key"

Remember regenerate the initramfs after this step:

# dracut --force

# 5. Troubleshooting and Debugging

If things don't work as expected, there are a few ways to find out what
is going, get help or report an issue.

## 5.1 Ensure disk decryption works

With or without crypt-ssh installed, dracut should always prompt for
a LUKS password and boot properly when the password is entered. If booting
with an interactive password does not work, you need to fix that first:
Ensure that the LUKS UUID configured in GRUB and the crypttab in the initramfs
are up to date and all modules needed to mount the root filesystem are present
in the initramfs.

Refer to the [crypto LUKS documentation of dracut](https://mirrors.edge.kernel.org/pub/linux/utils/boot/dracut/dracut.html#_crypto_luks)
(`man dracut.cmdline`) and your distribution documentation or help channels.

## 5.2 Ensure networking works (if you have console access)

If you cannot reach the crypt-ssh host via SSH, but you still have
interactive console access, you can (re)boot it with a dracut breakpoint.

When GRUB presents the boot options, hit the `e` key to edit boot options
and add `rd.break=pre-mount` to the boot options. Remove `rhgb` and `quiet`
from the kernel command line, if they are present. Hit `Ctrl-x` to boot
with the manual configuration and type your LUKS passphrase via the console.

Before mounting the root filesystem, dracut will drop you into a shell.
Is your network adapter present in `ip a`? If not, does your network adapter
need a module (check `lsmod` and `dmesg | grep net`)? Do you have an IP address
configured? Can you use `dhclient` to acquire an IP address? Is `dropbear`
running (`ps aux`)?

If the network adapter (module) is missing, rebuild the initramfs (`dracut -f`).
If your network configuration is missing, it's probably a configuration
issue. Refer to the Usage section for networking parameters. If the network
comes up, but dracut does not load, that's probably a bug in dracut-crypt-ssh.
[Please report it](https://github.com/dracut-crypt-ssh/dracut-crypt-ssh/issues).

## 5.3 Debugging a remote host

If (or rather "when") something goes wrong and you can't access just-booted
machine over network and can't get to console (hence sshd in initramfs), don't
panic - it's fixable if the machine can be rebooted into some rescue system
remotely.

Usually it's some dhcp+tftp netboot thing from a co-located machine (good idea to
setup/test in advance) plus whoever is there occasionally pushing the power
button, or maybe some fancy hw/interface for that (e.g. hetzner "rescue" interface).

To see what was going on during initramfs, open
"modules.d/99base/rdsosreport.sh" in dracut, append this (to the end):

set -x
    netstat -lnp
    netstat -np
    netstat -s
    netstat -i
    ip addr
    ip ro
    set +x

exec >/dev/null 2>&1
    mkdir /tmp/myboot
    mount /dev/sda2 /tmp/myboot
    cp /run/initramfs/rdsosreport.txt /tmp/myboot/
    umount /tmp/myboot
    rmdir /tmp/myboot

Be sure to replace `/dev/sda2` with whatever device is used for /boot, rebuild
dracut and add `rd.debug` to cmdline (e.g. in grub.cfg's "linux" line).

Upon next reboot, *wait* for at least a minute, since dracut should give up on
trying to boot the system first, then it will store full log of all the stuff
modules run ("set -x") and their output in "/boot/rdsosreport.txt".

Naturally, to access that, +1 reboot into some "rescue" system might be needed.

In case of network-related issues - e.g. if "rdsosreport.txt" file gets created
with "rd.debug", but host can't be pinged/connected-to for whatever reason -
either enable "debug" dracut module or add `dracut_install netstat ip` line to
`install()` section of "modules.d/60dropbear-sshd/module-setup.sh" and check
"rdsosreport.txt" or console output for whatever netstat + ip commands above
(for "rdsosreport.sh") show - there can be no default route, whatever interface
naming mixup, no traffic (e.g. unrelated connection issue), etc.

## 5.4 Report a bug

If you suspect a bug in the software, please [report it via our issue 
tracker](https://github.com/dracut-crypt-ssh/dracut-crypt-ssh/issues).

# 6. Security warning

The integrity, confidentiality and authenticity of your encrypted data relies
on the physical integrity of your device. If someone else has access to the
device that you are unlocking, it is entirely possible to replace the executable
files handling your key material, or steal your initramfs's SSH private keys.
Arguably, this kind of attack is possible without the "crypt-ssh" module, but
using automated or remote access could make such an attack easier to conceal.

If this is a concern for you, consider keeping your devices offline and on
your person.

If this is not a concern for you, i.e. you place a certain amount of trust in
your hosting provider or physical integrity, this tool might still protect
against accidental data leaks (i.e. VM deprovisioning, replaced hard disks).
07070100000004000081ED000003E800000064000000015BD6D71500000A73000000000000000000000000000000000000003200000000dracut-crypt-ssh-1.0.7+20181029.2204f72/configure#!/bin/bash

while [[ $# -gt 0 ]]; do
  case $1 in
    --print-moduledir)
      [[ -f config.mk ]] && source config.mk
      [[ -z $DRACUT_MODULEDIR ]] && exit 1
      echo $DRACUT_MODULEDIR
      exit 0
      ;;
    --dracut)
      DRACUT=$2
      shift
      ;;
    --root-home)
      ROOTHOME=$2
      shift
      ;;
  esac
  shift
done

echo -n "Searching for dracut... "
if [[ -z $DRACUT ]]; then
  DRACUT=$(which dracut)
  if [[ $? -eq 0 ]]; then
    echo $DRACUT
  else
    echo "not found"
    exit 1
  fi
else
  echo "[provided] $DRACUT"
fi

echo -n "Checking dracut version... "
DRACUT_VERSION=$(${DRACUT} --help | egrep "Version:[ \t]+[0-9]+" | egrep -o [0-9]+)
if [[ $? -ne 0 ]]; then
	echo -n "[old version - fallback] "
	DRACUT_VERSION=004
else
	DRACUT_VERSION=$(echo ${DRACUT_VERSION} | cut -f 1 -d " ")
fi
echo ${DRACUT_VERSION}

echo -n "Checking dracut module prefix... "
DRACUT_MODULEDIR=""
if [[ -d /usr/lib/dracut/modules.d ]]; then
	DRACUT_MODULEDIR=/usr/lib/dracut/modules.d
elif [[ -d /usr/share/dracut/modules.d ]]; then
	DRACUT_MODULEDIR=/usr/share/dracut/modules.d
else
	echo "failed"
	exit 1
fi
echo ${DRACUT_MODULEDIR}

NEED_CRYPTSETTLE=0
CRYPTPARSE=${DRACUT_MODULEDIR}/90crypt/parse-crypt.sh
if [[ -f $CRYPTPARSE ]]; then
  echo -n "Checking whether crypt-settle patch is needed... "
  grep -q -- "--settled" ${CRYPTPARSE}
  if [[ $? -ne 0 ]]; then
    NEED_CRYPTSETTLE=1
    echo "yes"
  else
    echo "no"
  fi
fi

echo -n "Checking for old-style modules... "
OLDSTYLE=1
if [[ -f ${DRACUT_MODULEDIR}/99base/module-setup.sh ]]; then
  OLDSTYLE=0
  echo "no"
else
  echo "yes"
fi

echo -n "Checking for root's home... "
if [[ -z ${ROOTHOME} ]]; then
  ROOTHOME=/
  module=module-setup.sh
  [[ ${OLDSTYLE} -eq 1 ]] && module=install
  MODULEBASE=${DRACUT_MODULEDIR}/99base/${module}
  if [[ -f $MODULEBASE ]]; then
    grep -c "root:" ${MODULEBASE} >/dev/null
    if [[ $? -eq 0 ]]; then
      ROOTHOME=/root
    fi
  fi
else
  echo -n "[provided] "
fi
echo ${ROOTHOME}

echo -n "Checking for libnss_files.so ... "
DIRS="/usr/lib /usr/lib64 /lib64 /lib"
NSSFILES=""
for dir in ${DIRS}; do
  for check in ${dir}/libnss_files.so*; do
    if [[ -f $check ]]; then
      NSSFILES=${check}
      break
    fi
  done
done
if [[ -z $NSSFILES ]]; then
  echo "not found"
  exit 1
else
  echo $NSSFILES
fi

OLDDRACUT=0
[[ $DRACUT_VERSION -le 4 ]] && OLDDRACUT=1

cat >config.mk <<EOF
export DRACUT=${DRACUT}
export DRACUT_VERSION=${DRACUT_VERSION}
export DRACUT_MODULEDIR=${DRACUT_MODULEDIR}
export NEED_CRYPTSETTLE=${NEED_CRYPTSETTLE}
export ROOTHOME=${ROOTHOME}
export OLDSTYLE=${OLDSTYLE}
export NSSFILES=${NSSFILES}
export OLDDRACUT=${OLDDRACUT}
EOF
07070100000005000081A4000003E800000064000000015BD6D715000007BD000000000000000000000000000000000000003700000000dracut-crypt-ssh-1.0.7+20181029.2204f72/crypt-ssh.conf# NOTE: The defaults in this file MUST be carefully read and understood before using this module!
# The defaults may NOT be appropriate for your site.  Carefully review and understand your threat model
#  (ie, what attack scenarios you are protecting yourself against) and adjust accordingly!
#

# The port to run the ssh daemon on
# Default: 222
# dropbear_port="222"

# Where to get the RSA and/or ECDSA keys for dropbear, options are:
#  GENERATE: generate a new one for each initrd run, the public key will be printed during the dracut build process
#            and on boot
#  SYSTEM:   use (convert) the host key from the host system's SSH daemon. This will make the initrd ssh indistinguishable
#            from the running system - this may be a security risk, depending on your threat model, but simplifies
#            your client-side ssh configuration
#  /path/to/openssh_key:   an absolute path to a host key, in OpenSSH format as generated by ssh-keygen.
#            A public key with '.pub' ending must be present too.
# 
# It is recommend that you use the system one, or supply your own.  If using the system key, be aware that an attacker
# that can access your initrd could use the host key to impersonate the running system.  This could allow them to attempt
# an MITM attack.
#
# Default: GENERATE
# dropbear_rsa_key="GENERATE"
# dropbear_ecdsa_key="GENERATE"

# Location of the list of authorized public keys that can log into the initrd ssh daemon
# Defaults to the authorized_keys list for root.  It may be advantageous to use a different authorized_keys list
#  so that users/machines that can unlock the machine are not necessarily given full root access after boot.
#  Note that root access to the initrd does give an attacker means to provide themselves with root access after boot,
#  especially if they hold the encryption keys to the root drive - choose carefully!
#
# Default: /root/.ssh/authorized_keys
# dropbear_acl="/root/.ssh/authorized_keys"
07070100000006000041ED000003E800000064000000015BD6D71500000000000000000000000000000000000000000000003000000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules07070100000007000041ED000003E800000064000000015BD6D71500000000000000000000000000000000000000000000003C00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh07070100000008000081A4000003E800000064000000015BD6D715000001AE000000000000000000000000000000000000004E00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/50-udev-pty.rules# do not edit this file, it will be overwritten on update

KERNEL=="pty[pqrstuvwxyzabcdef][0123456789abcdef]", GROUP="tty", MODE="0660"
KERNEL=="tty[pqrstuvwxyzabcdef][0123456789abcdef]", GROUP="tty", MODE="0660"
KERNEL=="ptmx",			GROUP="tty", MODE="0666"
KERNEL=="tty",			GROUP="tty", MODE="0666"
KERNEL=="tty[0-9]*",		GROUP="tty", MODE="0620"
KERNEL=="console",		MODE="0600"
KERNEL=="vcs|vcs[0-9]*|vcsa|vcsa[0-9]*", GROUP="tty"
07070100000009000081A4000003E800000064000000015BD6D7150000016C000000000000000000000000000000000000004500000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/MakefileINSTDIR=$(MODULEDIR)/60crypt-ssh

SUBDIRS=helper
.PHONY: install all clean $(SUBDIRS)

all: $(SUBDIRS)

clean: $(SUBDIRS)

install: $(SUBDIRS)
	mkdir -p $(INSTDIR)
	install -m 0644 50-udev-pty.rules $(INSTDIR)/
	install -m 0755 dropbear-start.sh dropbear-stop.sh $(INSTDIR)/
	install -m 0755 module-setup.sh $(INSTDIR)/

$(SUBDIRS):
	$(MAKE) -C $@ $(MAKECMDGOALS)
0707010000000A000081A4000003E800000064000000015BD6D7150000021A000000000000000000000000000000000000004E00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/dropbear-start.sh#!/bin/sh

. /etc/crypt-ssh.conf

[ -f /tmp/dropbear.pid ] && kill -0 $(cat /tmp/dropbear.pid) 2>/dev/null || {
  info "sshd port: ${dropbear_port}"
  for keyType in $keyTypes; do
    eval fingerprint=\$dropbear_${keyType}_fingerprint
    eval bubble=\$dropbear_${keyType}_bubble
    info "Boot SSH ${keyType} key parameters: "
    info "  fingerprint: ${fingerprint}"
    info "  bubblebabble: ${bubble}"
  done

/sbin/dropbear -s -j -k -p ${dropbear_port} -P /tmp/dropbear.pid
  [ $? -gt 0 ] && info 'Dropbear sshd failed to start'
}
0707010000000B000081A4000003E800000064000000015BD6D715000000C8000000000000000000000000000000000000004D00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/dropbear-stop.sh#!/bin/sh

[ -f /tmp/dropbear.pid ] || exit 0
read main_pid < /tmp/dropbear.pid
kill -STOP ${main_pid} 2>/dev/null
pkill -P ${main_pid}
kill ${main_pid} 2>/dev/null
kill -CONT ${main_pid} 2>/dev/null
0707010000000C000041ED000003E800000064000000015BD6D71500000000000000000000000000000000000000000000004300000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/helper0707010000000D000081A4000003E800000064000000015BD6D71500000264000000000000000000000000000000000000004C00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/helper/MakefileINSTDIR=$(MODULEDIR)/60crypt-ssh/helper
CFLAGS+=-std=gnu99 -Wall
CC?=gcc

.PHONY: install all clean test

all: console_auth unlock

test:	crypttab-test

install:
	mkdir -p $(INSTDIR)
	install -m 0755 console_peek.sh unlock-reap-success.sh $(INSTDIR)/
	install -m 0755 unlock console_auth $(INSTDIR)/

clean:
	rm -f *.o console_auth unlock crypttab-test

console_auth:	auth.c
	$(CC) $(CFLAGS) $^ -o $@

unlock:	crypttab.o unlock.o
	$(CC) $(CFLAGS) -lblkid $^ -o $@

crypttab-test: crypttab-test.c crypttab.o crypttab-test-data
	$(CC) crypttab-test.c $(CFLAGS) crypttab.o -lblkid -o crypttab-test
	./crypttab-test
0707010000000E000081A4000003E800000064000000015BD6D715000002D1000000000000000000000000000000000000004A00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/helper/auth.c#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <termios.h>
#include <unistd.h>
#include <string.h>

// Based on:
//  https://bugzilla.redhat.com/show_bug.cgi?id=524727
//  http://roosbertl.blogspot.de/2012/12/centos6-disk-encryption-with-remote.html

const char *prompt="Passphrase: ";

int main (int argc, const char * argv[]) {
	char *passphrase;
	int i;

int fd = open("/dev/console", O_RDONLY);
	if (fd < 0) return 2;

passphrase = getpass(prompt);

for (const char * str = passphrase; *str; ++str) ioctl(fd, TIOCSTI, str);
	ioctl(fd, TIOCSTI, "\r");

// clear string immediately
	int len = strlen(passphrase);
	for (i=0;i<len;i++) passphrase[i] = 0;
	return 0;
}
0707010000000F000081ED000003E800000064000000015BD6D7150000004E000000000000000000000000000000000000005300000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/helper/console_peek.sh#!/bin/sh
N=${1:-1}
exec setterm -term linux -dump "$N" -file /proc/self/fd/1
07070100000010000081A4000003E800000064000000015BD6D71500000186000000000000000000000000000000000000005600000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/helper/crypttab-test-dataluks-b88c3187-3abd-4eb6-810e-3679c912902e UUID=b88c3187-3abd-4eb6-810e-3679c912902e none 
luks-e3967355-5de9-4150-bf47-5c5d88c660d2 UUID=e3967355-5de9-4150-bf47-5c5d88c660d2
# Comment
# More comments
	# Malformed
		# Comments
			# That break the spec
# Empty line follows

luks-970223b4-62b6-400a-b0ac-74405ca9668d /dev/mapper/raid-array-1	/etc/mykey	options
moo						bar	baz		fooo	double

07070100000011000081A4000003E800000064000000015BD6D715000006E9000000000000000000000000000000000000005300000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/helper/crypttab-test.c#include <stdio.h>
#include <string.h>

#include "crypttab.h"

const static int numExpectedResults = 4;
const static struct crypttab_entry expectedResults[ 4 ] = {
	{"luks-b88c3187-3abd-4eb6-810e-3679c912902e", "UUID=b88c3187-3abd-4eb6-810e-3679c912902e", NULL, "none"},
	{"luks-e3967355-5de9-4150-bf47-5c5d88c660d2", "UUID=e3967355-5de9-4150-bf47-5c5d88c660d2", NULL, "none"},
	{"luks-970223b4-62b6-400a-b0ac-74405ca9668d", "/dev/mapper/raid-array-1", NULL, "/etc/mykey" },
	{"moo", "bar",	NULL, "baz" }
};

int check_string( const char *name, const char*reference, const char*test )
{
	if( strcmp( reference, test ) != 0 ) {
		printf( "Mismatch: %s, expected %s got %s\n", name, reference, test );
		return 0;
	}
	return 1;
}

int compare_entries( const struct crypttab_entry *reference, const struct crypttab_entry *test )
{
	return check_string( "mapper", reference->mapper, test->mapper ) &&
	       check_string( "device", reference->device, test->device ) &&
	       check_string( "keyfile",reference->keyfile, test->keyfile );
}

int main( int argc, char **argv )
{
	struct crypttab crypttab = crypttab_parse( "./crypttab-test-data" );

int testsPassed = 0;
	int testsToPass = 1 + numExpectedResults;

if( crypttab.size != numExpectedResults ) {
		printf( "Did not get the right number of entries! Got %i, expected %i\n", crypttab.size, numExpectedResults );
	} else {
		testsPassed ++;
	}

for( int line = 0; line < crypttab.size && line < numExpectedResults; ++line ) {
		testsPassed += compare_entries( &expectedResults[ line ], &crypttab.entries[ line ] );
	}

printf( "Tests %i/%i passed\n", testsPassed, testsToPass );

if( testsPassed == testsToPass ) {
		printf( "PASSED\n" );
		return 0;
	} else {
		printf( "FAILED\n" );
		return 255;
	}
}

07070100000012000081A4000003E800000064000000015BD6D71500000C86000000000000000000000000000000000000004E00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/helper/crypttab.c#include <stdio.h>
#include <linux/limits.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>

#include "crypttab.h"

#include <blkid/blkid.h>

char *crypttab_skipwhitespace( char *line );
char *crypttab_parsefield( char *line, char *dest );
struct crypttab_entry *crypttab_parseline( char *line );
int crypttab_resize( struct crypttab *list, int newsize );

char *crypttab_skipwhitespace( char *line )
{
	if( line == NULL ) return NULL;

for( ; line[ 0 ] != '\0' && isspace( *line ); ++line ) {
		if( line[ 0 ] == '\0' ) return NULL;
	}

return line;
}

char *crypttab_parsefield( char *line, char *dest )
{
	int chr = 0;

line = crypttab_skipwhitespace( line );
	if( line == NULL ) {
		dest[ 0 ] = '\0';
		return NULL;
	}

for( ; line[ chr ] != '\0' && !isspace( line[ chr ] ); ++chr ) {
		dest[ chr ] = line[ chr ];

if( chr >= (PATH_MAX - 1 ) ) break;
	}

dest[ chr ] = '\0';

return (line + chr );
}

struct crypttab_entry *crypttab_parseline( char *line )
{
	struct crypttab_entry *entry = NULL;
	
	line = crypttab_skipwhitespace( line );
	if( line == NULL ) {
		return NULL;
	}

if( line[ 0 ] == '#' || line[ 0 ] == '\0' ) {
		return NULL;
	}

entry = calloc( 1, sizeof( struct crypttab_entry ) );
	if( !entry ) return NULL;

entry->real_device = NULL;

line = crypttab_parsefield( line, entry->mapper );
	line = crypttab_parsefield( line, entry->device );
	line = crypttab_parsefield( line, entry->keyfile );

// Normalise data
	if( entry->keyfile[ 0 ] == '\0' ) {
		strncpy( entry->keyfile, "none", PATH_MAX );
	}

return entry;
}

void crypttab_freeentry( struct crypttab_entry *entry )
{
	if( entry->real_device ) {
		free( entry->real_device );
	}
}

int crypttab_resize( struct crypttab *list, int newSize )
{
	if( list->entries ) {
		struct crypttab_entry *newList =
			realloc( list->entries, sizeof( struct crypttab_entry ) * newSize );
		if( newList ) {
			list->entries = newList;
			list->size = newSize;
		} else {
			crypttab_free( list );
		}		
	} else {
		list->entries = malloc( sizeof( struct crypttab_entry ) );
		if( !list->entries ) {
			list->size = 0;
		}
		list->size = newSize;
	}

return list->size;
}

void crypttab_free( struct crypttab *list )
{
	for( int entry = 0; entry < list->size; ++entry ) {
		crypttab_freeentry( list->entries + entry );
	}

free( list->entries );
	list->size = 0;
	list->entries = NULL;
}

struct crypttab crypttab_parse( const char const*filename )
{
	struct crypttab list;
	char lineBuf[ PATH_MAX ];
	FILE *file = NULL;

list.size = 0;
	list.entries = NULL;

file = fopen( filename, "r" );
	if( !file ) return list;

while( !feof( file ) ) {
		struct crypttab_entry *entry = NULL;

fgets( 	lineBuf, PATH_MAX, file );
		if( feof( file ) ) break;
		
		entry = crypttab_parseline( lineBuf );

if( entry ) {
			if( crypttab_resize( &list, list.size + 1 ) == 0 ) {
				return list;
			}

list.entries[ list.size - 1 ] = *entry;	
		}
	}

return list;
}

void crypttab_lookupblkids( struct crypttab *list )
{
	for( int entryIdx = 0; entryIdx < list->size; ++entryIdx ) {
		struct crypttab_entry *entry = list->entries + entryIdx;

entry->real_device = blkid_evaluate_tag( entry->device, NULL, NULL );
	}
}

07070100000013000081A4000003E800000064000000015BD6D715000001E8000000000000000000000000000000000000004E00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/helper/crypttab.h#ifndef _CRYPTTAB_H_
#define _CRYPTTAB_H_

#include <linux/limits.h>

struct crypttab_entry {
	char mapper[ PATH_MAX ];
	char device[ PATH_MAX ];
	char *real_device;
	char keyfile[ PATH_MAX ];
};

struct crypttab {
	struct crypttab_entry *entries;
	int size;
};

struct crypttab crypttab_parse( const char const*filename );
void crypttab_lookupblkids( struct crypttab *list );
void crypttab_free( struct crypttab *list );
void crypttab_freeentry( struct crypttab_entry *entry );

#endif

07070100000014000081ED000003E800000064000000015BD6D715000000BB000000000000000000000000000000000000005A00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/helper/unlock-reap-success.sh#!/bin/sh

SYSTEMD_CRYPTSETUP="$(ps -C systemd-cryptsetup -o pid=)"
if [[ $? -eq 0 ]]; then
 # Systemd method
 kill -9 ${SYSTEMD_CRYPTSETUP}
else
 # Older method
 pkill cryptroot-ask
fi

07070100000015000081A4000003E800000064000000015BD6D71500001093000000000000000000000000000000000000004C00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/helper/unlock.c
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/mman.h>

#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>

#include "crypttab.h"

static const int kPasswordSize = 8192;
static const char *kDevPath = "/dev";
static const char *kCrypttabPath = "/etc/crypttab";
static const char *kNoKeyFile = "none";

int runchild( const char *input, int inputSize, const char *path, char *const args[] )
{
	int childStdin[ 2 ] = { -1, -1 };

pipe( childStdin );

pid_t childPid = fork();

int childStatus;

if( childPid == 0 ) { // We are the child
		close( 0 );
		close( childStdin[ 1 ] );

dup2( childStdin[ 0 ], 0 ); // make stdin

int rc = execv( path, args );
		exit( rc );
	} else {
		close( childStdin[ 0 ] );

write( childStdin[ 1 ], input, inputSize );
		close( childStdin[ 1 ] );

waitpid( childPid, &childStatus, 0 );
	}

if( WIFEXITED( childStatus ) ) {
		return WEXITSTATUS( childStatus );
	} else {
		return 1;
	}
}

int main( int argc, const char ** argv )
{
	int numProvidedNames = argc - 1;
	const char **providedNames = argv + 1;
	
	struct crypttab crypttab = crypttab_parse( kCrypttabPath );
	if( crypttab.size == 0 ) {
		fprintf( stderr, "/etc/crypttab is empty or invalid\n" );
		return 254;
	}

int *unlockList = calloc( crypttab.size, sizeof( int ) );
	if( !unlockList ) {
		fprintf( stderr, "Could not allocate memory\n" );
		return 255;
	}

int devicesToUnlock = 0;
	int errorExit = 0;

if( numProvidedNames > 0 ) {
		for( int providedName = 0; providedName < numProvidedNames; ++providedName ) {
			const char *name = providedNames[ providedName ];
			int found = 0;

for( int entryIdx = 0; entryIdx < crypttab.size; ++entryIdx ) {
				struct crypttab_entry *entry = crypttab.entries + entryIdx;
				if( strncmp( name, entry->mapper, strlen( name ) ) == 0 ) {
					unlockList[ entryIdx ] = 1;
					found = 1;
					++devicesToUnlock;
					break;
				}
			}
	
			if( !found ) {
				fprintf( stderr, "LUKS device matching '%s' not found in /etc/crypttab\n", name );
				errorExit = 1;
			}
		}
	} else {
		// Unless provided with a specific list of devices to unlock, 
		// only open devices that don't require a keyfile
		for( int entryIdx = 0; entryIdx < crypttab.size; ++entryIdx ) {
			struct crypttab_entry *entry = crypttab.entries + entryIdx;
			if( strcmp( entry->keyfile, kNoKeyFile ) == 0 ) {
				unlockList[ entryIdx ] = 1;
				++devicesToUnlock;
			}
		}
	}

if( devicesToUnlock == 0 ) {
		fprintf( stderr, "Error: No decryptable devices found!\n" );
		errorExit = 1;
	}

if( errorExit ) {
		free( unlockList );
		crypttab_free( &crypttab );

return 1;
	}

if( !mlockall( MCL_FUTURE ) ) {
		fprintf( stderr, "Warning: Unable to lock memory, are you root?\n" );
	}

char password[ kPasswordSize ];
	int passwordSize = 0;
	// Can't use fgets as no guarantee that characters are printable, etc
	for( int chr = 0; chr < kPasswordSize && !feof( stdin ); ++chr ) {
		int rc = fgetc( stdin );
		if( rc == EOF )  {
			passwordSize = chr;
			break;
		} else {
			password[ chr ] = (unsigned char) rc;
		}
	}
	
	crypttab_lookupblkids( &crypttab );
	
	for( int entryIdx = 0; entryIdx < crypttab.size; ++entryIdx ) {
		struct crypttab_entry *entry = crypttab.entries + entryIdx;

if( !unlockList[ entryIdx ] ) continue;

if( strncmp( kDevPath, entry->real_device, strlen( kDevPath ) ) != 0 ) {
			fprintf( stderr, "Error: disk device '%s' not found\n", entry->device );
			errorExit = 1;
			break;
		}

// Right, now we have something to unlock
		char *path = "/sbin/cryptsetup";
		char *args[] = {
			path,
			"luksOpen",
			entry->real_device,
			entry->mapper,
			NULL
		};

int result = runchild( password, passwordSize, path, args );
		if( result ) {
			fprintf( stderr, "Could not open %s (%s)\n", entry->mapper, entry->real_device );
			errorExit = 1;
			break;
		}
	}

crypttab_free( &crypttab );
	free( unlockList );

// Clear any record of password from RAM
	memset( password, '\0', kPasswordSize );

if( !errorExit ) {
		// Fork ourselves and run the cleanup script
		// Fork so that our return code isn't affected by the script
		if( fork() == 0 ) {
			system( "/sbin/unlock-reap-success" );
		}
	}

return errorExit;
}

07070100000016000081A4000003E800000064000000015BD6D71500000D2C000000000000000000000000000000000000004C00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/60crypt-ssh/module-setup.sh#!/bin/bash

# called by dracut
check() {
  #check for dropbear
  require_binaries dropbear || return 1
  
  return 0
}

depends() {
  echo network
  return 0
}

install() {
  #some initialization
  [[ -z "${dropbear_port}" ]] && dropbear_port=222
  [[ -z "${dropbear_acl}" ]] && dropbear_acl=/root/.ssh/authorized_keys
  local tmpDir=$(mktemp -d --tmpdir dracut-crypt-ssh.XXXX)
  local keyTypes="rsa ecdsa"
  local genConf="${tmpDir}/crypt-ssh.conf"
  local installConf="/etc/crypt-ssh.conf"

#start writing the conf for initramfs include
  echo -e "#!/bin/bash\n\n" > $genConf
  echo "keyTypes='${keyTypes}'" >> $genConf
  echo "dropbear_port='${dropbear_port}'" >> $genConf

#go over different encryption key types
  for keyType in $keyTypes; do
    eval state=\$dropbear_${keyType}_key
    local msgKeyType=$(echo "$keyType" | tr '[:lower:]' '[:upper:]')

[[ -z "$state" ]] && state=GENERATE

local osshKey="${tmpDir}/${keyType}.ossh"
    local dropbearKey="${tmpDir}/${keyType}.dropbear"
    local installKey="/etc/dropbear/dropbear_${keyType}_host_key"
    
    case ${state} in
      GENERATE )
        ssh-keygen -t $keyType -f $osshKey -q -N "" -m PEM || {
          derror "SSH ${msgKeyType} key creation failed"
          rm -rf "$tmpDir"
          return 1
        }
        
        ;;
      SYSTEM )
        local sysKey=/etc/ssh/ssh_host_${keyType}_key
        [[ -f ${sysKey} ]] || {
          derror "Cannot locate a system SSH ${msgKeyType} host key in ${sysKey}"
          derror "Start OpenSSH for the first time or use ssh-keygen to generate one"
          return 1
        }

cp $sysKey $osshKey
        cp ${sysKey}.pub ${osshKey}.pub
        
        ;;
      * )
        [[ -f ${state} ]] || {
          derror "Cannot locate a system SSH ${msgKeyType} host key in ${state}"
          derror "Please use ssh-keygen to generate this key"
          return 1
        }
        
        cp $state $osshKey
        cp ${state}.pub ${osshKey}.pub
        ;;
    esac
    
    #convert the keys from openssh to dropbear format
    dropbearconvert openssh dropbear $osshKey $dropbearKey > /dev/null 2>&1 || {
      derror "dropbearconvert for ${msgKeyType} key failed"
      rm -rf "$tmpDir"
      return 1
    }

#install and show some information
    local keyFingerprint=$(ssh-keygen -l -f "${osshKey}")
    local keyBubble=$(ssh-keygen -B -f "${osshKey}")
    dinfo "Boot SSH ${msgKeyType} key parameters: "
    dinfo "  fingerprint: ${keyFingerprint}"
    dinfo "  bubblebabble: ${keyBubble}"
    inst $dropbearKey $installKey

echo "dropbear_${keyType}_fingerprint='$keyFingerprint'" >> $genConf
    echo "dropbear_${keyType}_bubble='$keyBubble'" >> $genConf

done

inst_rules "$moddir/50-udev-pty.rules"

inst $genConf $installConf

inst_hook pre-udev 99 "$moddir/dropbear-start.sh"
  inst_hook pre-pivot 05 "$moddir/dropbear-stop.sh"

inst "${dropbear_acl}" /root/.ssh/authorized_keys

#cleanup
  rm -rf $tmpDir
  
  #install the required binaries
  dracut_install pkill setterm /lib64/libnss_files.so.2
  inst $(which dropbear) /sbin/dropbear
  #install the required helpers
  inst "$moddir"/helper/console_auth /bin/console_auth
  inst "$moddir"/helper/console_peek.sh /bin/console_peek
  inst "$moddir"/helper/unlock /bin/unlock
  inst "$moddir"/helper/unlock-reap-success.sh /sbin/unlock-reap-success
}
07070100000017000081A4000003E800000064000000015BD6D71500000041000000000000000000000000000000000000003900000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/check.sh#!/bin/bash

source $(dirname $0)/module-setup.sh

check
exit $?
07070100000018000041ED000003E800000064000000015BD6D71500000000000000000000000000000000000000000000004200000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/cryptsettle-patch07070100000019000081A4000003E800000064000000015BD6D71500000147000000000000000000000000000000000000004B00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/cryptsettle-patch/MakefileINSTDIR=$(MODULEDIR)/91cryptsettle-patch/

.phony: install all clean

all:

clean:

install:	../install.sh ../check.sh module-setup.sh
	mkdir -p $(INSTDIR)
	install -m 0755 module-setup.sh $(INSTDIR)/
ifeq ($(OLDSTYLE),1)
	install -m 0755 ../install.sh $(INSTDIR)/install
	install -m 0755 ../check.sh $(INSTDIR)/check
endif
0707010000001A000081A4000003E800000064000000015BD6D715000000D7000000000000000000000000000000000000005200000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/cryptsettle-patch/module-setup.sh#!/bin/bash

check() {
	return 0
}

install() {
	for file in ${initdir}/cmdline/*parse-crypt.sh; do
		dinfo "Patching ${file}"
		sed -i -e "s!/sbin/initqueue!/sbin/initqueue --settled!g" ${file}
	done

return 0
}

0707010000001B000081A4000003E800000064000000015BD6D71500000038000000000000000000000000000000000000003B00000000dracut-crypt-ssh-1.0.7+20181029.2204f72/modules/install.sh#!/bin/bash

source ${moddir}/module-setup.sh

install

07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!117 blocks

Places

File dracut-crypt-ssh-1.0.7+20181029.2204f72.obscpio of Package dracut-crypt-ssh

Places