File snphost-0.2.0~0.obscpio of Package snphost
07070100000000000041ED0000000000000000000000026545C04F00000000000000000000000000000000000000000000001800000000snphost-0.2.0~0/.github07070100000001000081A40000000000000000000000016545C04F000000EB000000000000000000000000000000000000002300000000snphost-0.2.0~0/.github/CODEOWNERS# These owners will be the default owners for everything in
# the repo. Unless a later match takes precedence,
# @global-owner1 and @global-owner2 will be requested for
# review when someone opens a pull request.
* @tylerfanelli
07070100000002000081A40000000000000000000000016545C04F00000030000000000000000000000000000000000000002F00000000snphost-0.2.0~0/.github/auto_assign-issues.ymladdAssignees: true
assignees:
- tylerfanelli
07070100000003000081A40000000000000000000000016545C04F00000211000000000000000000000000000000000000002800000000snphost-0.2.0~0/.github/auto_assign.yml# Set to true to add reviewers to pull requests
addReviewers: true
# Set to true to add assignees to pull requests
addAssignees: true
# A list of reviewers to be added to pull requests (GitHub user name)
reviewers:
- DGonzalezVillal
- tylerfanelli
- larrydewey
- ryansavino
# A list of keywords to be skipped the process that add reviewers if pull requests include it
skipKeywords:
- wip
- WIP
# A number of reviewers added to the pull request
# Set 0 to add all the reviewers (default: 0)
numberOfReviewers: 2
07070100000004000081A40000000000000000000000016545C04F00000064000000000000000000000000000000000000002700000000snphost-0.2.0~0/.github/dependabot.ymlversion: 2
updates:
- package-ecosystem: "cargo"
directory: "/"
schedule:
interval: "daily"
07070100000005000041ED0000000000000000000000026545C04F00000000000000000000000000000000000000000000002200000000snphost-0.2.0~0/.github/workflows07070100000006000081A40000000000000000000000016545C04F0000033E000000000000000000000000000000000000002B00000000snphost-0.2.0~0/.github/workflows/lint.ymlon: [push, pull_request]
name: lint
jobs:
fmt:
name: cargo fmt
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- uses: actions-rs/toolchain@v1
with:
components: rustfmt
toolchain: nightly
profile: minimal
override: true
- uses: actions-rs/cargo@v1
with:
command: fmt
args: --all -- --check
clippy:
name: cargo clippy
runs-on: ubuntu-latest
steps:
- run: sudo apt-get install -y asciidoctor
- uses: actions/checkout@v2
- uses: actions-rs/toolchain@v1
with:
components: clippy
toolchain: nightly
profile: minimal
override: true
- uses: actions-rs/cargo@v1
with:
command: clippy
args: -- -D warnings
07070100000007000081A40000000000000000000000016545C04F000002B4000000000000000000000000000000000000002B00000000snphost-0.2.0~0/.github/workflows/test.ymlon: [push, pull_request]
name: test
jobs:
test:
name: ${{ matrix.toolchain }} (${{ matrix.profile.name }})
runs-on: ubuntu-latest
steps:
- run: sudo apt-get install -y asciidoctor
- uses: actions/checkout@v2
- uses: actions-rs/toolchain@v1
with:
toolchain: ${{ matrix.toolchain }}
override: true
- uses: actions-rs/cargo@v1
with:
command: test
args: ${{ matrix.profile.flag }}
strategy:
fail-fast: false
matrix:
toolchain:
- nightly
- beta
- stable
profile:
- name: debug
- name: release
flag: --release
07070100000008000081A40000000000000000000000016545C04F00000018000000000000000000000000000000000000001B00000000snphost-0.2.0~0/.gitignore/target
Cargo.lock
*.sh
07070100000009000081A40000000000000000000000016545C04F00000485000000000000000000000000000000000000001B00000000snphost-0.2.0~0/Cargo.toml[package]
name = "snphost"
version = "0.2.0"
authors = ["The VirTEE Project Developers"]
edition = "2021"
license = "Apache-2.0"
homepage = "https://github.com/virtee/snphost"
repository = "https://github.com/virtee/snphost"
description = "Administrative utility for AMD SEV-SNP"
readme = "README.md"
keywords = ["amd", "sev", "snp"]
categories = ["os", "os::linux-apis", "parsing", "cryptography", "hardware-support"]
exclude = [ ".gitignore", ".github/*" ]
rust-version = "1.56"
[badges]
# See https://doc.rust-lang.org/cargo/reference/manifest.html#the-badges-section
github = { repository = "virtee/snphost", workflow = "test" }
#github = { repository = "virtee/snphost", workflow = "lint" }
maintenance = { status = "actively-developed" }
is-it-maintained-issue-resolution = { repository = "virtee/snphost" }
is-it-maintained-open-issues = { repository = "virtee/snphost" }
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
anyhow = "1.0.71"
sev = { version = "1.2.0", features = [ "openssl" ] }
env_logger = "0.9.0"
structopt = "0.3.26"
colorful = "0.2.2"
libc = "0.2.139"
curl = "0.4"
0707010000000A000081A40000000000000000000000016545C04F00002C5D000000000000000000000000000000000000001800000000snphost-0.2.0~0/LICENSE Apache License
Version 2.0, January 2004
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0707010000000B000081A40000000000000000000000016545C04F000000B2000000000000000000000000000000000000001A00000000snphost-0.2.0~0/README.md# snphost
Management CLI for SEV-SNP host system administrators
Please consult `docs/snphost.1.adoc` for an overview of `snphost` and
descriptions of each `snphost` subcommand.
0707010000000C000081A40000000000000000000000016545C04F00000636000000000000000000000000000000000000001900000000snphost-0.2.0~0/build.rs// SPDX-License-Identifier: Apache-2.0
use std::path::Path;
use std::{env, fs, io, process};
const COMMANDS: [&str; 1] = ["snphost"];
fn main() {
let outdir = match env::var_os("OUT_DIR") {
Some(outdir) => outdir,
None => {
panic!("OUT_DIR environment variable not defined.");
}
};
fs::create_dir_all(&outdir).unwrap();
for command in COMMANDS {
if let Err(err) = generate_man_page(&outdir, command) {
println!(
"failed to generate man page: {} (is asciidoctor installed?)",
err
);
}
}
}
fn generate_man_page<P: AsRef<Path>>(outdir: P, command: &str) -> io::Result<()> {
// If asciidoctor isn't installed, fallback to asciidoc.
if let Err(err) = process::Command::new("asciidoctor").output() {
eprintln!("Error from running 'asciidoctor': {}", err);
return Err(err);
}
let outdir = outdir.as_ref();
let outfile = outdir.join(format!("{}.1", command));
let cwd = env::current_dir()?;
let txt_path = cwd.join("docs").join(format!("{}.1.adoc", command));
let result = process::Command::new("asciidoctor")
.arg("--doctype")
.arg("manpage")
.arg("--backend")
.arg("manpage")
.arg("--out-file")
.arg(&outfile)
.arg(&txt_path)
.spawn()?
.wait()?;
if !result.success() {
let msg = format!("'asciidoctor' failed with exit code {:?}", result.code());
return Err(io::Error::new(io::ErrorKind::Other, msg));
}
Ok(())
}
0707010000000D000041ED0000000000000000000000026545C04F00000000000000000000000000000000000000000000001500000000snphost-0.2.0~0/docs0707010000000E000081A40000000000000000000000016545C04F00000FB1000000000000000000000000000000000000002400000000snphost-0.2.0~0/docs/snphost.1.adocsnphost(1)
==========
NAME
----
snphost - Command line tool for managing the AMD SEV-SNP environment.
SYNOPSIS
--------
*snphost* [GLOBAL_OPTIONS] [_COMMAND_] [_COMMAND_ARGS_] +
*snphost* [_-h, --help_] +
*snphost* *command* *--help*
DESCRIPTION
-----------
snphost is a CLI utility for managing and interacting with the AMD SEV-SNP
firmware device of a host system.
GLOBAL OPTIONS
--------------
*-q, --quiet*:: Don't print any output to the console.
COMMANDS
--------
*snphost export*::
usage: snphost export [der, pem] DIR-PATH
This command exports the SEV-SNP certificate chain to the directory
provided by DIR-PATH. User must specify if the certificates currently
stored on the PSP are encoded in DER or PEM format. These are the only
two encoding formats supported in this tool.
options:
-h, --help Show a help message.
*snphost import*::
usage: snphost import DIR-PATH
This command imports serialized SEV-SNP certificates to the host's PSP.
Currently, only the ASK, ARK, and VCEK are able to be imported to the
PSP. Note that there are a few user requirements for this command to
work as intended.
All certificates must be located in the same directory with specific
names:
ARK certificate => ark.{pem, der}
ASK certificate => ask.{pem, der}
VCEK certificate => vcek.{pem, der}
Not all certificates are needed in the directory, only the ones that a
user is looking to import to the PSP.
options:
-h, --help Show a help message
*snphost ok*::
usage: snphost ok
This command probes the processor, sysfs, and KVM for AMD SEV-SNP
related capabilities on the host and emits the results.
options:
-h, --help Show a help message
*snphost reset*::
usage: snphost reset
This command resets the SEV-SNP platform. This will clear all
persistent data managed by the platform.
options:
-h, --help Show a help message.
*snphost show*::
usage: snphost show [guests, identifier, tcb, vcek-url, version ]
This command describes the state of the SEV-SNP platform. There are
several platform details to describe:
Guest count: snphost show guests
Platform identifier: snphost show identifier
TCB version: snphost show tcb
VCEK URL: snphost show vcek-url
Firmware version: snphost show version
options:
-h, --help Show a help message
*snphost verify*::
usage: snphost verify ARK-PATH ASK-PATH VCEK-PATH
This command verifies the full SEV-SNP/CA certificate chain.
Certificates must be encoded in PEM format.
options:
-h, --help Show a help message
*snphost fetch ca*::
usage: snphost fetch ca [ der, pem ] DIR-PATH
This command fetches the host system's CA certificate chain and writes
the encoded certificates to the directory at path DIR-PATH. Users must
specify which format they would like the certificate to be encoded
in (DER or PEM).
options:
-h, --help Show a help message
*snphost fetch vcek*::
usage: snphost fetch vcek [ der, pem ] DIR-PATH
This command fetches the host system's versioned chip endorsement
key (VCEK) and writes the encoded certificate to the directory at path
DIR-PATH. Users must specify which format they would like the
certificate to be encoded in (DER or PEM).
options:
-h, --help Show a help message
*snphost fetch crl*::
usage: snphost fetch crl DIR-PATH
This command fetches the host system's certificate revokation list
(CRL) and writes the encoded list to the directory at path DIR-PATH.
options:
-h, --help Show a help message
REPORTING BUGS
--------------
Please report all bugs to <https://github.com/virtee/snphost/issues>
0707010000000F000041ED0000000000000000000000026545C04F00000000000000000000000000000000000000000000001400000000snphost-0.2.0~0/src07070100000010000041ED0000000000000000000000026545C04F00000000000000000000000000000000000000000000001900000000snphost-0.2.0~0/src/cert07070100000011000081A40000000000000000000000016545C04F00000B7A000000000000000000000000000000000000002300000000snphost-0.2.0~0/src/cert/export.rs// SPDX-License-Identifier: Apache-2.0
use super::EncodingFormat;
use anyhow::{bail, Context, Result};
use sev::{certs::snp::Certificate, firmware::host::CertType};
use structopt::StructOpt;
use std::{io::Write, path::PathBuf};
use crate::cert_entries;
fn identify_cert(buf: &[u8]) -> EncodingFormat {
const PEM_START: &[u8] = b"-----BEGIN CERTIFICATE-----";
match buf {
PEM_START => EncodingFormat::Pem,
_ => EncodingFormat::Der,
}
}
#[derive(StructOpt)]
pub struct Export {
#[structopt(about = "The format the certs are encoded in (PEM or DER)")]
pub encoding_fmt: EncodingFormat,
#[structopt(about = "The directory to write the certificates to")]
pub dir_path: PathBuf,
}
pub fn cmd(export: Export) -> Result<()> {
let (mut ark, mut ask, mut vcek) = (false, false, false);
std::fs::create_dir_all(export.dir_path.clone()).context(format!(
"unable to find or create directory {}",
export.dir_path.display()
))?;
let entries = cert_entries()?;
for e in entries {
let type_id = match e.cert_type {
CertType::ARK => {
if ark {
bail!("multiple ARKs found");
}
ark = true;
"ark"
}
CertType::ASK => {
if ask {
bail!("multiple ASKs found");
}
ask = true;
"ask"
}
CertType::VCEK => {
if vcek {
bail!("multiple VCEKs found");
}
vcek = true;
"vcek"
}
_ => continue,
};
// Attempt to identify the current format of the certificate in
// hypervisor memory and build a Certificate from it.
let certificate: Certificate = match identify_cert(&e.data[..27]) {
EncodingFormat::Der => Certificate::from_der(&e.data)?,
EncodingFormat::Pem => Certificate::from_pem(&e.data)?,
};
// Verify the certificate is in the requested format.
let formatted_data: Vec<u8> = match export.encoding_fmt {
EncodingFormat::Der => certificate.to_der()?,
EncodingFormat::Pem => certificate.to_pem()?,
};
// Build out the expected name of the file.
let name = format!(
"{}/{}.{}",
export.dir_path.display(),
type_id,
export.encoding_fmt.to_string()
);
// Create the file for writing and open a file-handle.
let mut file = std::fs::OpenOptions::new()
.write(true)
.create(true)
.open(name.clone())?;
// Write out the contents of the certificate to the file.
file.write_all(&formatted_data)
.context(format!("unable to cert data to file {}", name))?;
}
Ok(())
}
07070100000012000041ED0000000000000000000000026545C04F00000000000000000000000000000000000000000000001F00000000snphost-0.2.0~0/src/cert/fetch07070100000013000081A40000000000000000000000016545C04F000008B6000000000000000000000000000000000000002500000000snphost-0.2.0~0/src/cert/fetch/ca.rs// SPDX-License-Identifier: Apache-2.0
use anyhow::{Context, Result};
use curl::easy::Easy;
use sev::certs::snp::{ca::Chain, Certificate};
use std::{
fs::{create_dir_all, OpenOptions},
io::Write,
path::PathBuf,
};
use structopt::StructOpt;
use super::super::EncodingFormat;
use crate::processor::ProcessorGeneration;
#[derive(StructOpt)]
pub struct Ca {
#[structopt(about = "The format the certs are encoded in (PEM or DER)")]
pub encoding_fmt: EncodingFormat,
#[structopt(about = "The directory to write the certificates to")]
pub dir_path: PathBuf,
}
fn write_cert(path: &PathBuf, bytes: &[u8]) -> Result<()> {
let mut file = OpenOptions::new().create(true).write(true).open(path)?;
file.write_all(bytes)
.context("Failed to write certificate!")
}
pub fn cmd(ca: Ca) -> Result<()> {
let url: String = ca_chain_url()?;
let cert_chain: Chain = fetch(&url)?;
let ((ask_path, ask_bytes), (ark_path, ark_bytes)) = match ca.encoding_fmt {
EncodingFormat::Der => (
("ask.der", cert_chain.ask.to_der()?),
("ark.der", cert_chain.ark.to_der()?),
),
EncodingFormat::Pem => (
("ask.pem", cert_chain.ask.to_pem()?),
("ark.pem", cert_chain.ark.to_pem()?),
),
};
// Create Directory if not exists first, then write the files.
if !ca.dir_path.exists() {
create_dir_all(&ca.dir_path)?;
}
write_cert(&ca.dir_path.join(ask_path), &ask_bytes)?;
write_cert(&ca.dir_path.join(ark_path), &ark_bytes)?;
Ok(())
}
pub fn fetch(url: &str) -> Result<Chain> {
let mut handle = Easy::new();
let mut buf: Vec<u8> = Vec::new();
handle.url(url)?;
handle.get(true)?;
let mut transfer = handle.transfer();
transfer.write_function(|data| {
buf.extend_from_slice(data);
Ok(data.len())
})?;
transfer.perform()?;
drop(transfer);
Ok(Chain {
ask: Certificate::from_pem(&buf[..2325])?,
ark: Certificate::from_pem(&buf[2325..])?,
})
}
fn ca_chain_url() -> Result<String> {
Ok(format!(
"https://kdsintf.amd.com/vcek/v1/{}/cert_chain",
ProcessorGeneration::current()?.to_string()
))
}
07070100000014000081A40000000000000000000000016545C04F000005C9000000000000000000000000000000000000002600000000snphost-0.2.0~0/src/cert/fetch/crl.rs// SPDX-License-Identifier: Apache-2.0
use crate::processor::ProcessorGeneration;
use anyhow::{Context, Result};
use curl::easy::Easy;
use std::{
fs::{create_dir_all, OpenOptions},
io::Write,
path::PathBuf,
};
use structopt::StructOpt;
fn crl_url() -> Result<String> {
Ok(format!(
"https://kdsintf.amd.com/vcek/v1/{}/crl",
ProcessorGeneration::current()?.to_string()
))
}
#[derive(StructOpt)]
pub struct Crl {
#[structopt(about = "The directory to write the CRL to")]
pub dir_path: PathBuf,
}
pub fn cmd(crl: Crl) -> Result<()> {
let url: String = crl_url()?;
let bytes: Vec<u8> = fetch(&url)?;
// Create Directory if not exists first, then write the files.
if !crl.dir_path.exists() {
create_dir_all(&crl.dir_path)?;
}
let mut file = OpenOptions::new()
.create(true)
.write(true)
.open(crl.dir_path.join(format!(
"{}.crl",
ProcessorGeneration::current()?.to_string()
)))?;
file.write_all(&bytes)
.context("Failed to write CRL to directory specified!")
}
pub fn fetch(url: &str) -> Result<Vec<u8>> {
let mut handle = Easy::new();
let mut buf: Vec<u8> = Vec::new();
handle.url(url)?;
handle.get(true)?;
let mut transfer = handle.transfer();
transfer.write_function(|data| {
buf.extend_from_slice(data);
Ok(data.len())
})?;
transfer.perform()?;
drop(transfer);
Ok(buf)
}
07070100000015000081A40000000000000000000000016545C04F00000263000000000000000000000000000000000000002600000000snphost-0.2.0~0/src/cert/fetch/mod.rs// SPDX-License-Identifier: Apache-2.0
pub(crate) mod ca;
pub(crate) mod crl;
pub(crate) mod vcek;
use anyhow::Result;
use structopt::StructOpt;
#[derive(StructOpt)]
pub enum Fetch {
#[structopt(about = "Fetches the VCEK from the KDS")]
Vcek(vcek::Vcek),
#[structopt(about = "Fetches the CA from the KDS")]
Ca(ca::Ca),
#[structopt(about = "Fetches the CRL from the KDS")]
Crl(crl::Crl),
}
pub fn cmd(fetch: Fetch) -> Result<()> {
match fetch {
Fetch::Vcek(vcek) => vcek::cmd(vcek),
Fetch::Ca(ca) => ca::cmd(ca),
Fetch::Crl(crl) => crl::cmd(crl),
}
}
07070100000016000081A40000000000000000000000016545C04F00000917000000000000000000000000000000000000002700000000snphost-0.2.0~0/src/cert/fetch/vcek.rs// SPDX-License-Identifier: Apache-2.0
use std::{
fs::{create_dir_all, OpenOptions},
io::Write,
path::PathBuf,
};
use crate::{firmware, platform_status, processor::ProcessorGeneration};
use anyhow::{Context, Result};
use curl::easy::Easy;
use sev::certs::snp::Certificate;
use structopt::StructOpt;
use super::super::EncodingFormat;
#[derive(StructOpt)]
pub struct Vcek {
#[structopt(about = "The format in which to encode the certificate")]
encoding_fmt: EncodingFormat,
#[structopt(about = "The path of a directory to store the encoded VCEK in")]
path: PathBuf,
}
pub fn cmd(vcek: Vcek) -> Result<()> {
let url = vcek_url()?;
let cert = fetch(&url).context(format!("unable to fetch VCEK from {}", url))?;
let (vcek_name, vcek_bytes) = match vcek.encoding_fmt {
EncodingFormat::Der => ("vcek.der", cert.to_der()?),
EncodingFormat::Pem => ("vcek.pem", cert.to_pem()?),
};
// Create Directory if not exists first, then write the files.
if !vcek.path.exists() {
create_dir_all(&vcek.path)?;
}
let mut file = OpenOptions::new()
.create(true)
.write(true)
.open(vcek.path.join(vcek_name))?;
file.write_all(&vcek_bytes)?;
Ok(())
}
pub fn fetch(url: &str) -> Result<Certificate> {
let mut handle = Easy::new();
let mut buf: Vec<u8> = Vec::new();
handle.url(url)?;
handle.get(true)?;
let mut transfer = handle.transfer();
transfer.write_function(|data| {
buf.extend_from_slice(data);
Ok(data.len())
})?;
transfer.perform()?;
drop(transfer);
Ok(Certificate::from_der(buf.as_slice())?)
}
pub fn vcek_url() -> Result<String> {
let id = firmware()?
.get_identifier()
.map_err(|e| anyhow::anyhow!(format!("{:?}", e)))
.context("error fetching identifier")?;
let status = platform_status()?;
let gen = ProcessorGeneration::current()?;
Ok(format!("https://kdsintf.amd.com/vcek/v1/{}/{}?blSPL={:02}&teeSPL={:02}&snpSPL={:02}&ucodeSPL={:02}",
gen.to_string(), id, status.platform_tcb_version.bootloader,
status.platform_tcb_version.tee,
status.platform_tcb_version.snp,
status.platform_tcb_version.microcode))
}
07070100000017000081A40000000000000000000000016545C04F00000725000000000000000000000000000000000000002300000000snphost-0.2.0~0/src/cert/import.rs// SPDX-License-Identifier: Apache-2.0
use sev::firmware::host::{CertTableEntry, CertType, ExtConfig};
use std::{
fs::{read, read_dir, DirEntry},
path::PathBuf,
};
use crate::firmware;
use structopt::StructOpt;
use anyhow::{anyhow, bail, Context, Result};
#[derive(StructOpt)]
pub struct Import {
#[structopt(about = "The directory to find the encoded certificates")]
pub path: PathBuf,
}
pub fn cmd(import: Import) -> Result<()> {
if !import.path.exists() {
bail!(format!("path {} does not exist", import.path.display()));
}
let mut table: Vec<CertTableEntry> = vec![];
for dir_entry in read_dir(import.path.clone())? {
match dir_entry {
Ok(de) => table_add_entry(de, &mut table)?,
Err(_) => {
bail!(format!(
"unable to read directory at path {}",
import.path.display()
))
}
}
}
firmware()?.snp_set_ext_config(ExtConfig::new_certs_only(table))?;
Ok(())
}
fn table_add_entry(de: DirEntry, table: &mut Vec<CertTableEntry>) -> Result<()> {
let cert_type = entry_get_type(&de.path())?;
let data = read(de.path())?;
table.push(CertTableEntry::new(cert_type, data));
Ok(())
}
fn entry_get_type(path: &PathBuf) -> Result<CertType> {
let file_name_string = path
.file_name()
.context(format!("unable to read file at path {:?}", path))?
.to_string_lossy()
.into_owned();
let subs: Vec<&str> = file_name_string.split('.').collect();
match subs[0] {
"ark" => Ok(CertType::ARK),
"ask" => Ok(CertType::ASK),
"vcek" => Ok(CertType::VCEK),
_ => Err(anyhow!(
"unable to determine certificate type of path {:?}",
path
)),
}
}
07070100000018000081A40000000000000000000000016545C04F0000039A000000000000000000000000000000000000002000000000snphost-0.2.0~0/src/cert/mod.rs// SPDX-License-Identifier: Apache-2.0
pub(crate) mod export;
pub(crate) mod fetch;
pub(crate) mod import;
pub(crate) mod verify;
use std::str::FromStr;
use structopt::StructOpt;
use anyhow::{anyhow, Error};
#[derive(StructOpt)]
pub enum EncodingFormat {
#[structopt(about = "Certificates are encoded in DER format")]
Der,
#[structopt(about = "Certificates are encoded in PEM format")]
Pem,
}
impl ToString for EncodingFormat {
fn to_string(&self) -> String {
match self {
Self::Der => "der".to_string(),
Self::Pem => "pem".to_string(),
}
}
}
impl FromStr for EncodingFormat {
type Err = Error;
fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
match s {
"der" => Ok(Self::Der),
"pem" => Ok(Self::Pem),
_ => Err(anyhow!("unrecognized certificate encoding format")),
}
}
}
07070100000019000081A40000000000000000000000016545C04F00000964000000000000000000000000000000000000002300000000snphost-0.2.0~0/src/cert/verify.rs// SPDX-License-Identifier: Apache-2.0
use anyhow::{anyhow, Context, Result};
use std::{fs::read, path::PathBuf};
use colorful::*;
use sev::certs::snp::{ca, Certificate, Chain, Verifiable};
use structopt::StructOpt;
#[derive(StructOpt)]
pub struct Verify {
#[structopt(about = "The path to the ARK certificate")]
ark: PathBuf,
#[structopt(about = "The path to the ASK certificate")]
ask: PathBuf,
#[structopt(about = "The path to the VCEK certificate")]
vcek: PathBuf,
}
pub fn cmd(verify: Verify, quiet: bool) -> Result<()> {
let chain = chain(verify)?;
let (ark, ask, vcek) = (
(&chain.ca.ark, "ARK"),
(&chain.ca.ask, "ASK"),
(&chain.vcek, "VCEK"),
);
let mut err = true;
if !quiet {
println!("\n • = self signed, ⬑ = signs, •̷ = invalid self sign, ⬑̸ = invalid signs\n");
}
err |= status(ark, ark, true, quiet);
err |= status(ark, ask, false, quiet);
err |= status(ask, vcek, false, quiet);
match err {
true => Ok(()),
false => Err(anyhow!("SEV-SNP/CA certificate verification failed")),
}
}
fn status<'a, S>(
signer: (&'a S, &str),
signee: (&'a S, &str),
self_signed: bool,
quiet: bool,
) -> bool
where
(&'a S, &'a S): Verifiable,
{
let res = (signer.0, signee.0).verify().is_ok();
if !quiet {
println!("{}", ssym(res, self_signed, signer.1, signee.1));
}
res
}
fn ssym(res: bool, self_signed: bool, signer: &str, signee: &str) -> String {
let sym = match (res, self_signed) {
(true, true) => "•".green(),
(true, false) => "⬑".green(),
(false, true) => "•̷".red(),
(false, false) => "⬑̸".red(),
};
match self_signed {
true => format!("{} {}", signer, sym),
false => format!("{} {} {}", signer, sym, signee),
}
}
fn chain(verify: Verify) -> Result<Chain> {
Ok(Chain {
ca: ca::Chain {
ark: cert(verify.ark, "ARK")?,
ask: cert(verify.ask, "ASK")?,
},
vcek: cert(verify.vcek, "VCEK")?,
})
}
fn cert(path: PathBuf, name: &str) -> Result<Certificate> {
Certificate::from_pem(
&read(path.clone()).context(format!("unable to read {}", path.display()))?,
)
.context(format!(
"unable to parse {} certificate from {}",
name,
path.display()
))
}
0707010000001A000081A40000000000000000000000016545C04F00000A8D000000000000000000000000000000000000001C00000000snphost-0.2.0~0/src/main.rs// SPDX-License-Identifier: Apache-2.0
#![deny(clippy::all)]
mod cert;
mod processor;
mod reset;
mod show;
mod ok;
use cert::{export, fetch, import, verify};
use anyhow::{anyhow, Context, Result};
use sev::firmware::host::*;
use structopt::StructOpt;
const VERSION: &str = env!("CARGO_PKG_VERSION");
const AUTHORS: &str = env!("CARGO_PKG_AUTHORS");
#[derive(StructOpt)]
struct SnpHost {
#[structopt(subcommand)]
pub cmd: SnpHostCmd,
#[structopt(short, long, about = "Don't print anything to the console")]
pub quiet: bool,
}
#[allow(clippy::large_enum_variant)]
#[derive(StructOpt)]
#[structopt(author = AUTHORS, version = VERSION, about = "Utilities for managing the SEV-SNP environment")]
enum SnpHostCmd {
#[structopt(about = "Display information about the SEV-SNP platform")]
Show(show::Show),
#[structopt(about = "Export a certificate chain to a given directory")]
Export(export::Export),
#[structopt(about = "Import a certificate chain to the AMD PSP")]
Import(import::Import),
#[structopt(about = "Probe system for SEV-SNP support")]
Ok,
#[structopt(about = "Reset the SEV-SNP platform state")]
Reset,
#[structopt(about = "Verify a certificate chain")]
Verify(verify::Verify),
#[structopt(about = "Retrieve some content from the AMD Key Distribution Server (KDS)")]
Fetch(fetch::Fetch),
}
fn firmware() -> Result<Firmware> {
Firmware::open().context("unable to open /dev/sev")
}
fn platform_status() -> Result<SnpPlatformStatus> {
firmware()?
.snp_platform_status()
.map_err(|e| anyhow::anyhow!(format!("{:?}", e)))
.context("unable to retrieve SNP platform status")
}
fn cert_entries() -> Result<Vec<CertTableEntry>> {
let config = firmware()?
.snp_get_ext_config()
.map_err(|e| anyhow::anyhow!(format!("{:?}", e)))
.context("unable to retrieve SNP certificates")?;
match config.certs {
Some(c) => Ok(c),
None => Err(anyhow!("no SNP certificates found")),
}
}
fn main() -> Result<()> {
env_logger::init();
let snphost = SnpHost::from_args();
let result = match snphost.cmd {
SnpHostCmd::Show(show) => show::cmd(show),
SnpHostCmd::Export(export) => export::cmd(export),
SnpHostCmd::Import(import) => import::cmd(import),
SnpHostCmd::Ok => ok::cmd(snphost.quiet),
SnpHostCmd::Reset => reset::cmd(),
SnpHostCmd::Verify(verify) => verify::cmd(verify, snphost.quiet),
SnpHostCmd::Fetch(fetch) => fetch::cmd(fetch),
};
if !snphost.quiet {
if let Err(ref e) = result {
eprintln!("ERROR: {}", e);
}
}
result
}
0707010000001B000081A40000000000000000000000016545C04F0000521F000000000000000000000000000000000000001A00000000snphost-0.2.0~0/src/ok.rs// SPDX-License-Identifier: Apache-2.0
use super::*;
use std::{
arch::x86_64,
fmt,
fs::{self, File},
mem::{transmute, MaybeUninit},
os::unix::io::AsRawFd,
str::from_utf8,
};
use colorful::*;
type TestFn = dyn Fn() -> TestResult;
// SEV generation-specific bitmasks.
const SEV_MASK: usize = 1;
const ES_MASK: usize = 1 << 1;
const SNP_MASK: usize = 1 << 2;
struct Test {
name: &'static str,
gen_mask: usize,
run: Box<TestFn>,
sub: Vec<Test>,
}
struct TestResult {
name: String,
stat: TestState,
mesg: Option<String>,
}
#[derive(PartialEq, Eq)]
enum TestState {
Pass,
Skip,
Fail,
}
enum SevGeneration {
Sev,
Es,
Snp,
}
impl fmt::Display for TestState {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let s = match self {
TestState::Pass => format!("{}", "PASS".green()),
TestState::Skip => format!("{}", "SKIP".yellow()),
TestState::Fail => format!("{}", "FAIL".red()),
};
write!(f, "{}", s)
}
}
fn collect_tests() -> Vec<Test> {
let tests = vec![
Test {
name: "AMD CPU",
gen_mask: SEV_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x0000_0000) };
let name: [u8; 12] = unsafe { transmute([res.ebx, res.edx, res.ecx]) };
let name = from_utf8(&name[..]).unwrap_or("ERROR_FOUND");
let stat = if name == "AuthenticAMD" {
TestState::Pass
} else {
TestState::Fail
};
TestResult {
name: "AMD CPU".to_string(),
stat,
mesg: None,
}
}),
sub: vec![
Test {
name: "Microcode support",
gen_mask: SEV_MASK,
run: Box::new(|| {
let cpu_name = {
let mut bytestr = Vec::with_capacity(48);
for cpuid in 0x8000_0002_u32..=0x8000_0004_u32 {
let cpuid = unsafe { x86_64::__cpuid(cpuid) };
let mut bytes: Vec<u8> =
[cpuid.eax, cpuid.ebx, cpuid.ecx, cpuid.edx]
.iter()
.flat_map(|r| r.to_le_bytes().to_vec())
.collect();
bytestr.append(&mut bytes);
}
String::from_utf8(bytestr)
.unwrap_or_else(|_| "ERROR_FOUND".to_string())
.trim()
.to_string()
};
let stat = if cpu_name.to_uppercase().contains("EPYC") {
TestState::Pass
} else {
TestState::Fail
};
TestResult {
name: "Microcode support".to_string(),
stat,
mesg: None,
}
}),
sub: vec![],
},
Test {
name: "Secure Memory Encryption (SME)",
gen_mask: SEV_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x8000_001f) };
let stat = if (res.eax & 0x1) != 0 {
TestState::Pass
} else {
TestState::Fail
};
TestResult {
name: "Secure Memory Encryption (SME)".to_string(),
stat,
mesg: None,
}
}),
sub: vec![],
},
Test {
name: "Secure Encrypted Virtualization (SEV)",
gen_mask: SEV_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x8000_001f) };
let stat = if (res.eax & 0x1 << 1) != 0 {
TestState::Pass
} else {
TestState::Fail
};
TestResult {
name: "Secure Encrypted Virtualization (SEV)".to_string(),
stat,
mesg: None,
}
}),
sub: vec![
Test {
name: "Encrypted State (SEV-ES)",
gen_mask: ES_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x8000_001f) };
let stat = if (res.eax & 0x1 << 3) != 0 {
TestState::Pass
} else {
TestState::Fail
};
TestResult {
name: "Encrypted State (SEV-ES)".to_string(),
stat,
mesg: None,
}
}),
sub: vec![],
},
Test {
name: "Secure Nested Paging (SEV-SNP)",
gen_mask: SNP_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x8000_001f) };
let stat = if (res.eax & 0x1 << 4) != 0 {
TestState::Pass
} else {
TestState::Fail
};
TestResult {
name: "Secure Nested Paging (SEV-SNP)".to_string(),
stat,
mesg: None,
}
}),
sub: vec![Test {
name: "VM Permission Levels",
gen_mask: SNP_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x8000_001f) };
let stat = if (res.eax & 0x1 << 5) != 0 {
TestState::Pass
} else {
TestState::Fail
};
TestResult {
name: "VM Permission Levels".to_string(),
stat,
mesg: None,
}
}),
sub: vec![Test {
name: "Number of VMPLs",
gen_mask: SNP_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x8000_001f) };
let num_vmpls = (res.ebx & 0xF000) >> 12;
TestResult {
name: "Number of VMPLs".to_string(),
stat: TestState::Pass,
mesg: Some(format!("{}", num_vmpls)),
}
}),
sub: vec![],
}],
}],
},
Test {
name: "Physical address bit reduction",
gen_mask: SEV_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x8000_001f) };
let field = (res.ebx & 0b1111_1100_0000) >> 6;
TestResult {
name: "Physical address bit reduction".to_string(),
stat: TestState::Pass,
mesg: Some(format!("{}", field)),
}
}),
sub: vec![],
},
Test {
name: "C-bit location",
gen_mask: SEV_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x8000_001f) };
let field = res.ebx & 0b11_1111;
TestResult {
name: "C-bit location".to_string(),
stat: TestState::Pass,
mesg: Some(format!("{}", field)),
}
}),
sub: vec![],
},
Test {
name: "Number of encrypted guests supported simultaneously",
gen_mask: SEV_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x8000_001f) };
let field = res.ecx;
TestResult {
name: "Number of encrypted guests supported simultaneously"
.to_string(),
stat: TestState::Pass,
mesg: Some(format!("{}", field)),
}
}),
sub: vec![],
},
Test {
name: "Minimum ASID value for SEV-enabled, SEV-ES disabled guest",
gen_mask: SEV_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x8000_001f) };
let field = res.edx;
TestResult {
name:
"Minimum ASID value for SEV-enabled, SEV-ES disabled guest"
.to_string(),
stat: TestState::Pass,
mesg: Some(format!("{}", field)),
}
}),
sub: vec![],
},
Test {
name: "/dev/sev readable",
gen_mask: SEV_MASK,
run: Box::new(dev_sev_r),
sub: vec![],
},
Test {
name: "/dev/sev writable",
gen_mask: SEV_MASK,
run: Box::new(dev_sev_w),
sub: vec![],
},
],
},
Test {
name: "Page flush MSR",
gen_mask: SEV_MASK,
run: Box::new(|| {
let res = unsafe { x86_64::__cpuid(0x8000_001f) };
let msr_flag = if (res.eax & 0x1 << 2) != 0 {
"ENABLED".green()
} else {
"DISABLED".yellow()
};
let name = format!("Page flush MSR: {}", msr_flag);
TestResult {
name,
/*
* Page flush MSR can be enabled/disabled.
* Therefore, if the flag is disabled, it doesn't
* necessarily mean that Page flush MSR *isn't*
* supported, but rather that it is supported yet
* currently disabled. So instead of returning
* TestState::Fail (indicating that Page flush MSR
* isn't supported), return TestState::Pass and
* indicate to the caller whether it is enabled or
* disabled.
*/
stat: TestState::Pass,
mesg: None,
}
}),
sub: vec![],
},
],
},
Test {
name: "KVM Support",
gen_mask: SEV_MASK,
run: Box::new(has_kvm_support),
sub: vec![
Test {
name: "SEV enabled in KVM",
gen_mask: SEV_MASK,
run: Box::new(|| sev_enabled_in_kvm(SevGeneration::Sev)),
sub: vec![],
},
Test {
name: "SEV-ES enabled in KVM",
gen_mask: ES_MASK,
run: Box::new(|| sev_enabled_in_kvm(SevGeneration::Es)),
sub: vec![],
},
Test {
name: "SEV-SNP enabled in KVM",
gen_mask: SNP_MASK,
run: Box::new(|| sev_enabled_in_kvm(SevGeneration::Snp)),
sub: vec![],
},
],
},
Test {
name: "memlock limit",
gen_mask: SEV_MASK,
run: Box::new(memlock_rlimit),
sub: vec![],
},
];
tests
}
const INDENT: usize = 2;
pub fn cmd(quiet: bool) -> Result<()> {
let tests = collect_tests();
if run_test(&tests, 0, quiet, SEV_MASK | ES_MASK | SNP_MASK) {
Ok(())
} else {
Err(anyhow::anyhow!(
"One or more tests in sevctl-ok reported a failure"
))
}
}
fn run_test(tests: &[Test], level: usize, quiet: bool, mask: usize) -> bool {
let mut passed = true;
for t in tests {
// Skip tests that aren't included in the specified generation.
if (t.gen_mask & mask) != t.gen_mask {
test_gen_not_included(t, level, quiet);
continue;
}
let res = (t.run)();
emit_result(&res, level, quiet);
match res.stat {
TestState::Pass => {
if !run_test(&t.sub, level + INDENT, quiet, mask) {
passed = false;
}
}
TestState::Fail => {
passed = false;
emit_skip(&t.sub, level + INDENT, quiet);
}
// Skipped tests are marked as skip before recursing. They are just emitted and not actually processed.
TestState::Skip => unreachable!(),
}
}
passed
}
fn emit_result(res: &TestResult, level: usize, quiet: bool) {
if !quiet {
let msg = match &res.mesg {
Some(m) => format!(": {}", m),
None => "".to_string(),
};
println!(
"[ {:^4} ] {:width$}- {}{}",
format!("{}", res.stat),
"",
res.name,
msg,
width = level
)
}
}
fn test_gen_not_included(test: &Test, level: usize, quiet: bool) {
if !quiet {
let tr_skip = TestResult {
name: test.name.to_string(),
stat: TestState::Skip,
mesg: None,
};
println!(
"[ {:^4} ] {:width$}- {}",
format!("{}", tr_skip.stat),
"",
tr_skip.name,
width = level
);
emit_skip(&test.sub, level + INDENT, quiet);
}
}
fn emit_skip(tests: &[Test], level: usize, quiet: bool) {
if !quiet {
for t in tests {
let tr_skip = TestResult {
name: t.name.to_string(),
stat: TestState::Skip,
mesg: None,
};
println!(
"[ {:^4} ] {:width$}- {}",
format!("{}", tr_skip.stat),
"",
tr_skip.name,
width = level
);
emit_skip(&t.sub, level + INDENT, quiet);
}
}
}
fn dev_sev_r() -> TestResult {
let (stat, mesg) = match dev_sev_rw(fs::OpenOptions::new().read(true)) {
Ok(_) => (TestState::Pass, "/dev/sev readable".to_string()),
Err(e) => (TestState::Fail, format!("/dev/sev not readable: {}", e)),
};
TestResult {
name: "Reading /dev/sev".to_string(),
stat,
mesg: Some(mesg),
}
}
fn dev_sev_w() -> TestResult {
let (stat, mesg) = match dev_sev_rw(fs::OpenOptions::new().write(true)) {
Ok(_) => (TestState::Pass, "/dev/sev writable".to_string()),
Err(e) => (TestState::Fail, format!("/dev/sev not writable: {}", e)),
};
TestResult {
name: "Writing /dev/sev".to_string(),
stat,
mesg: Some(mesg),
}
}
fn dev_sev_rw(file: &fs::OpenOptions) -> Result<()> {
let path = "/dev/sev";
match file.open(path) {
Ok(_) => Ok(()),
Err(e) => Err(anyhow::Error::new(Box::new(e))),
}
}
fn has_kvm_support() -> TestResult {
let path = "/dev/kvm";
let (stat, mesg) = match File::open(path) {
Ok(kvm) => {
let api_version = unsafe { libc::ioctl(kvm.as_raw_fd(), 0xAE00, 0) };
if api_version < 0 {
(
TestState::Fail,
"Error - accessing KVM device node failed".to_string(),
)
} else {
(TestState::Pass, format!("API version: {}", api_version))
}
}
Err(e) => (TestState::Fail, format!("Error reading {}: ({})", path, e)),
};
TestResult {
name: "KVM supported".to_string(),
stat,
mesg: Some(mesg),
}
}
fn sev_enabled_in_kvm(gen: SevGeneration) -> TestResult {
let path_loc = match gen {
SevGeneration::Sev => "/sys/module/kvm_amd/parameters/sev",
SevGeneration::Es => "/sys/module/kvm_amd/parameters/sev_es",
SevGeneration::Snp => "/sys/module/kvm_amd/parameters/sev_snp",
};
let path = std::path::Path::new(path_loc);
let (stat, mesg) = if path.exists() {
match std::fs::read_to_string(path_loc) {
Ok(result) => {
if result.trim() == "1" || result.trim() == "Y" {
(TestState::Pass, "enabled".to_string())
} else {
(
TestState::Fail,
format!("Error - contents read from {}: {}", path_loc, result.trim()),
)
}
}
Err(e) => (
TestState::Fail,
format!("Error - (unable to read {}): {}", path_loc, e,),
),
}
} else {
(
TestState::Fail,
format!("Error - {} does not exist", path_loc),
)
};
TestResult {
name: match gen {
SevGeneration::Sev => "SEV enabled in KVM",
SevGeneration::Es => "SEV-ES enabled in KVM",
SevGeneration::Snp => "SEV-SNP enabled in KVM",
}
.to_string(),
stat,
mesg: Some(mesg),
}
}
fn memlock_rlimit() -> TestResult {
let mut rlimit = MaybeUninit::uninit();
let res = unsafe { libc::getrlimit(libc::RLIMIT_MEMLOCK, rlimit.as_mut_ptr()) };
let (stat, mesg) = if res == 0 {
let r = unsafe { rlimit.assume_init() };
(
TestState::Pass,
format!("Soft: {} | Hard: {}", r.rlim_cur, r.rlim_max),
)
} else {
(
TestState::Fail,
"Unable to retrieve memlock resource limits".to_string(),
)
};
TestResult {
name: "Memlock resource limit".to_string(),
stat,
mesg: Some(mesg),
}
}
0707010000001C000081A40000000000000000000000016545C04F000008F1000000000000000000000000000000000000002100000000snphost-0.2.0~0/src/processor.rs// SPDX-License-Identifier: Apache-2.0
use anyhow::{anyhow, Result};
use std::arch::x86_64;
pub enum ProcessorGeneration {
Milan,
Genoa,
}
impl ProcessorGeneration {
// Get the SEV generation of the processor currently running on the machine.
// To do this, we execute a CPUID (label 0x80000001) and read the EAX
// register as an array of bytes (each byte representing 8 bits of a 32-bit
// value, thus the array is 4 bytes long). The formatting for these values is
// as follows:
//
// Base model: bits 4:7
// Base family: bits 8:11
// Extended model: bits 16:19
// Extended family: bits 20:27
//
// Extract the bit values from the array, and use them to calculate the MODEL
// and FAMILY of the processor.
//
// The family calculation is as follows:
//
// FAMILY = Base family + Extended family
//
// The model calculation is a follows:
//
// MODEL = Base model | (Extended model << 4)
//
// Compare these values with the models and families of known processor generations to
// determine which generation the current processor is a part of.
pub(crate) fn current() -> Result<Self> {
let cpuid = unsafe { x86_64::__cpuid(0x8000_0001) };
let bytes: Vec<u8> = cpuid.eax.to_le_bytes().to_vec();
let base_model = (bytes[0] & 0xF0) >> 4;
let base_family = bytes[1] & 0x0F;
let ext_model = bytes[2] & 0x0F;
let ext_family = {
let low = (bytes[2] & 0xF0) >> 4;
let high = (bytes[3] & 0x0F) << 4;
low | high
};
let model = (ext_model << 4) | base_model;
let family = base_family + ext_family;
let id = (model, family);
let milan = (1, 25);
let genoa = (17, 25);
if id == milan {
return Ok(Self::Milan);
} else if id == genoa {
return Ok(Self::Genoa);
}
Err(anyhow!("processor is not of a known SEV-SNP generation"))
}
}
impl ToString for ProcessorGeneration {
fn to_string(&self) -> String {
let sstr = match self {
Self::Milan => "Milan",
Self::Genoa => "Genoa",
};
sstr.to_string()
}
}
0707010000001D000081A40000000000000000000000016545C04F00000103000000000000000000000000000000000000001D00000000snphost-0.2.0~0/src/reset.rs// SPDX-License-Identifier: Apache-2.0
use super::*;
pub fn cmd() -> Result<()> {
let mut fw = firmware()?;
fw.snp_reset_config()
.map_err(|e| anyhow::anyhow!(format!("{:?}", e)))
.context("error resetting SEV-SNP configuration")
}
0707010000001E000081A40000000000000000000000016545C04F000004FE000000000000000000000000000000000000001C00000000snphost-0.2.0~0/src/show.rs// SPDX-License-Identifier: Apache-2.0
use super::*;
use cert::fetch::vcek::vcek_url;
#[derive(StructOpt)]
pub enum Show {
#[structopt(about = "Show the current number of guests")]
Guests,
#[structopt(about = "Show the platform identifier")]
Identifier,
#[structopt(about = "Show the current platform and reported TCB version")]
Tcb,
#[structopt(about = "Show the VCEK DER download URL")]
VcekUrl,
#[structopt(about = "Show the platform's firmware version")]
Version,
}
pub fn cmd(show: Show) -> Result<()> {
let status = platform_status()?;
match show {
Show::Guests => println!("{}", status.guest_count),
Show::Identifier => {
let id = firmware()?
.get_identifier()
.map_err(|e| anyhow::anyhow!(format!("{:?}", e)))
.context("error fetching identifier")?;
println!("{}", id);
}
Show::Tcb => println!(
"Reported TCB: {}\nPlatform TCB: {}",
status.reported_tcb_version, status.platform_tcb_version
),
Show::VcekUrl => {
let url = vcek_url()?;
println!("{}", url);
}
Show::Version => println!("{}", status.version),
}
Ok(())
}
07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!133 blocks
