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Rodolphe Breard 5 years ago
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  1. 14
      .gitignore
  2. 4
      Cargo.toml
  3. 202
      LICENSE-APACHE-2.0.txt
  4. 7
      LICENSE-MIT.txt
  5. 26
      acmed/Cargo.toml
  6. 359
      acmed/src/acmed.rs
  7. 247
      acmed/src/config.rs
  8. 213
      acmed/src/encoding.rs
  9. 58
      acmed/src/errors.rs
  10. 75
      acmed/src/main.rs
  11. 173
      acmed/src/storage.rs

14
.gitignore
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# Rust files
/target
**/*.rs.bk
Cargo.lock
# Backup files
*~
\#*
.\#*
*.swp
# Test files
/test
test.*

4
Cargo.toml
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[workspace]
members = [
"acmed",
]

202
LICENSE-APACHE-2.0.txt
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Apache License
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7
LICENSE-MIT.txt
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Copyright 2019 Rodolphe Bréard
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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26
acmed/Cargo.toml
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[package]
name = "acmed"
version = "0.1.0"
authors = ["Rodolphe Breard <rodolphe@what.tf>"]
edition = "2018"
description = "ACME (RFC 8555) client daemon"
keywords = ["acme", "tls", "X.509"]
repository = "https://github.com/breard-r/acmed"
readme = "README.md"
license = "MIT OR Apache-2.0"
include = ["src/**/*", "Cargo.toml", "LICENSE-*.txt"]
[dependencies]
acme-lib = "0.4"
clap = "2.32"
env_logger = "0.6"
handlebars = "2.0.0-beta.1"
log = "0.4"
pem = "0.5"
serde = { version = "1.0", features = ["derive"] }
time = "0.1"
toml = "0.4"
x509-parser = "0.4"
[target.'cfg(unix)'.dependencies]
nix = "0.13"

359
acmed/src/acmed.rs
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use acme_lib::{Directory, DirectoryUrl};
use crate::config::{self, Hook};
use crate::errors::Error;
use crate::storage::Storage;
use handlebars::Handlebars;
use log::{debug, info, warn};
use serde::Serialize;
use std::{fmt, thread};
use std::fs::File;
use std::io::Write;
use std::process::{Command, Stdio};
use std::time::Duration;
use x509_parser::parse_x509_der;
#[derive(Clone, Debug, PartialEq, PartialOrd, Eq, Ord)]
pub enum Format {
Der,
Pem,
}
impl fmt::Display for Format {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let s = match self {
Format::Der => "der",
Format::Pem => "pem",
};
write!(f, "{}", s)
}
}
#[derive(Clone, Debug)]
pub enum Challenge {
Http01,
Dns01,
}
impl Challenge {
pub fn from_str(s: &str) -> Result<Self, Error> {
match s.to_lowercase().as_str() {
"http-01" => Ok(Challenge::Http01),
"dns-01" => Ok(Challenge::Dns01),
_ => Err(Error::new(&format!("{}: unknown challenge.", s))),
}
}
}
impl fmt::Display for Challenge {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let s = match self {
Challenge::Http01 => "http-01",
Challenge::Dns01 => "dns-01",
};
write!(f, "{}", s)
}
}
#[derive(Clone, Debug)]
pub enum Algorithm {
Rsa2048,
Rsa4096,
EcdsaP256,
EcdsaP384,
}
impl Algorithm {
pub fn from_str(s: &str) -> Result<Self, Error> {
match s.to_lowercase().as_str() {
"rsa2048" => Ok(Algorithm::Rsa2048),
"rsa4096" => Ok(Algorithm::Rsa4096),
"ecdsa_p256" => Ok(Algorithm::EcdsaP256),
"ecdsa_p384" => Ok(Algorithm::EcdsaP384),
_ => Err(Error::new(&format!("{}: unknown algorithm.", s))),
}
}
}
impl fmt::Display for Algorithm {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let s = match self {
Algorithm::Rsa2048 => "rsa2048",
Algorithm::Rsa4096 => "rsa4096",
Algorithm::EcdsaP256 => "ecdsa-p256",
Algorithm::EcdsaP384 => "ecdsa-p384",
};
write!(f, "{}", s)
}
}
#[derive(Serialize)]
struct HookData {
// Common
domains: Vec<String>,
algorithm: String,
challenge: String,
status: String,
// Challenge hooks
current_domain: String,
token: String,
proof: String,
}
macro_rules! get_hook_output {
($out: expr, $reg: ident, $data: expr) => {{
match $out {
Some(path) => {
let path = $reg.render_template(path, $data)?;
let file = File::create(path)?;
Stdio::from(file)
}
None => Stdio::null(),
}
}};
}
impl HookData {
pub fn call(&self, hook: &Hook) -> Result<(), Error> {
let reg = Handlebars::new();
let mut v = vec![];
let args = match &hook.args {
Some(lst) => {
for fmt in lst.iter() {
let s = reg.render_template(fmt, &self)?;
v.push(s);
}
v.as_slice()
}
None => &[],
};
let mut cmd = Command::new(&hook.cmd)
.args(args)
.stdout(get_hook_output!(&hook.stdout, reg, &self))
.stderr(get_hook_output!(&hook.stderr, reg, &self))
.stdin(match &hook.stdin {
Some(_) => Stdio::piped(),
None => Stdio::null(),
})
.spawn()?;
if hook.stdin.is_some() {
let data_in = reg.render_template(&hook.stdin.to_owned().unwrap(), &self)?;
let stdin = cmd.stdin.as_mut().unwrap();
stdin.write_all(data_in.as_bytes()).unwrap();
}
Ok(())
}
}
#[derive(Debug)]
struct Certificate {
domains: Vec<String>,
algo: Algorithm,
storage: Storage,
email: String,
remote_url: String,
challenge: Challenge,
challenge_hooks: Vec<Hook>,
post_operation_hooks: Vec<Hook>,
}
impl Certificate {
fn should_renew(&self) -> bool {
let domain = self.domains.first().unwrap();
let raw_cert = match self.storage.get_certificate(&Format::Der) {
Ok(c) => match c {
Some(d) => d,
None => {
debug!(
"{} certificate for {} is empty or does not exists",
self.algo, domain
);
return true;
}
},
Err(e) => {
warn!("{}", e);
return true;
}
};
match parse_x509_der(&raw_cert) {
Ok((_, cert)) => {
// TODO: allow a custom duration (using time-parse ?)
let renewal_time =
cert.tbs_certificate.validity.not_after - time::Duration::weeks(3);
debug!(
"{} certificate for {}: not after: {}",
self.algo,
domain,
cert.tbs_certificate.validity.not_after.asctime()
);
debug!(
"{} certificate for {}: renew on: {}",
self.algo,
domain,
renewal_time.asctime()
);
time::now_utc() > renewal_time
}
Err(_) => true,
}
}
fn call_challenge_hooks(&self, token: &str, proof: &str, domain: &str) -> Result<(), Error> {
let hook_data = HookData {
domains: self.domains.to_owned(),
algorithm: self.algo.to_string(),
challenge: self.challenge.to_string(),
status: format!("Validation pending for {}", domain),
current_domain: domain.to_string(),
token: token.to_string(),
proof: proof.to_string(),
};
for hook in self.challenge_hooks.iter() {
hook_data.call(&hook)?;
}
Ok(())
}
fn call_post_operation_hooks(&self, status: &str) -> Result<(), Error> {
let hook_data = HookData {
domains: self.domains.to_owned(),
algorithm: self.algo.to_string(),
challenge: self.challenge.to_string(),
status: status.to_string(),
current_domain: "".to_string(),
token: "".to_string(),
proof: "".to_string(),
};
for hook in self.post_operation_hooks.iter() {
hook_data.call(&hook)?;
}
Ok(())
}
fn renew(&mut self) -> Result<(), Error> {
// TODO: do it in a separated thread since it may take a while
let (name, alt_names_str) = self.domains.split_first().unwrap();
let mut alt_names = vec![];
for n in alt_names_str.iter() {
alt_names.push(n.as_str());
}
info!("Renewing the {} certificate for {}", self.algo, name);
let url = DirectoryUrl::Other(&self.remote_url);
let dir = Directory::from_url(self.storage.to_owned(), url)?;
let acc = dir.account(&self.email)?;
let mut ord_new = acc.new_order(name, &alt_names)?;
let ord_csr = loop {
if let Some(ord_csr) = ord_new.confirm_validations() {
break ord_csr;
}
let auths = ord_new.authorizations()?;
for auth in auths.iter() {
match self.challenge {
Challenge::Http01 => {
let chall = auth.http_challenge();
let token = chall.http_token();
let proof = chall.http_proof();
self.call_challenge_hooks(&token, &proof, auth.domain_name())?;
chall.validate(crate::DEFAULT_POOL_TIME)?;
}
Challenge::Dns01 => {
let chall = auth.dns_challenge();
let proof = chall.dns_proof();
self.call_challenge_hooks("", &proof, auth.domain_name())?;
chall.validate(crate::DEFAULT_POOL_TIME)?;
}
};
}
ord_new.refresh()?;
};
// TODO: allow PK reuse
let (pkey_pri, pkey_pub) = match self.algo {
Algorithm::Rsa2048 => acme_lib::create_rsa_key(2048),
Algorithm::Rsa4096 => acme_lib::create_rsa_key(4096),
Algorithm::EcdsaP256 => acme_lib::create_p256_key(),
Algorithm::EcdsaP384 => acme_lib::create_p384_key(),
};
let ord_cert = ord_csr.finalize_pkey(pkey_pri, pkey_pub, crate::DEFAULT_POOL_TIME)?;
ord_cert.download_and_save_cert()?;
Ok(())
}
}
pub struct Acmed {
certs: Vec<Certificate>,
}
impl Acmed {
pub fn new(config_file: &str) -> Result<Self, Error> {
let cnf = config::from_file(config_file)?;
let mut certs = Vec::new();
for crt in cnf.certificate.iter() {
let cert = Certificate {
domains: crt.domains.to_owned(),
algo: crt.get_algorithm()?,
storage: Storage {
account_directory: cnf.get_account_dir(),
account_name: crt.email.to_owned(),
crt_directory: crt.get_crt_dir(&cnf),
crt_name: crt.get_crt_name(),
crt_name_format: crt.get_crt_name_format(),
formats: crt.get_formats()?,
algo: crt.get_algorithm()?,
cert_file_mode: cnf.get_cert_file_mode(),
cert_file_owner: cnf.get_cert_file_user(),
cert_file_group: cnf.get_cert_file_group(),
pk_file_mode: cnf.get_pk_file_mode(),
pk_file_owner: cnf.get_pk_file_user(),
pk_file_group: cnf.get_pk_file_group(),
},
email: crt.email.to_owned(),
remote_url: crt.get_remote_url(&cnf)?,
challenge: crt.get_challenge()?,
challenge_hooks: crt.get_challenge_hooks(&cnf)?,
post_operation_hooks: crt.get_post_operation_hook(&cnf)?,
};
certs.push(cert);
}
Ok(Acmed { certs })
}
pub fn run(&mut self) {
loop {
for crt in self.certs.iter_mut() {
debug!("{:?}", crt);
if crt.should_renew() {
// TODO: keep track of (not yet implemented) threads and wait for them to end.
let status = match crt.renew() {
Ok(_) => "Success.".to_string(),
Err(e) => {
let msg = format!(
"Unable to renew the {} certificate for {}: {}",
crt.algo,
crt.domains.first().unwrap(),
e
);
warn!("{}", msg);
format!("Failed: {}", msg)
}
};
match crt.call_post_operation_hooks(&status) {
Ok(_) => {}
Err(e) => {
let msg = format!(
"{} certificate for {}: post-operation hook error: {}",
crt.algo,
crt.domains.first().unwrap(),
e
);
warn!("{}", msg);
}
};
}
}
thread::sleep(Duration::from_secs(crate::DEFAULT_SLEEP_TIME));
}
}
}

247
acmed/src/config.rs
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use crate::acmed::{Algorithm, Challenge, Format};
use crate::errors::Error;
use log::info;
use serde::Deserialize;
use std::fs::{self, File};
use std::path::Path;
use std::io::prelude::*;
#[derive(Deserialize)]
pub struct Config {
pub global: Option<GlobalOptions>,
pub endpoint: Vec<Endpoint>,
pub hook: Vec<Hook>,
pub certificate: Vec<Certificate>,
}
impl Config {
pub fn get_account_dir(&self) -> String {
let account_dir = match &self.global {
Some(g) => match &g.accounts_directory {
Some(d) => &d,
None => crate::DEFAULT_ACCOUNTS_DIR,
},
None => crate::DEFAULT_ACCOUNTS_DIR,
};
account_dir.to_string()
}
pub fn get_hook(&self, name: &str) -> Result<Hook, Error> {
for hook in self.hook.iter() {
if name == hook.name {
return Ok(hook.clone());
}
}
Err(Error::new(&format!("{}: hook not found", name)))
}
pub fn get_cert_file_mode(&self) -> u32 {
match &self.global {
Some(g) => match g.cert_file_mode {
Some(m) => m,
None => crate::DEFAULT_CERT_FILE_MODE,
},
None => crate::DEFAULT_CERT_FILE_MODE,
}
}
pub fn get_cert_file_user(&self) -> Option<String> {
match &self.global {
Some(g) => g.cert_file_user.to_owned(),
None => None,
}
}
pub fn get_cert_file_group(&self) -> Option<String> {
match &self.global {
Some(g) => g.cert_file_group.to_owned(),
None => None,
}
}
pub fn get_pk_file_mode(&self) -> u32 {
match &self.global {
Some(g) => match g.pk_file_mode {
Some(m) => m,
None => crate::DEFAULT_PK_FILE_MODE,
},
None => crate::DEFAULT_PK_FILE_MODE,
}
}
pub fn get_pk_file_user(&self) -> Option<String> {
match &self.global {
Some(g) => g.pk_file_user.to_owned(),
None => None,
}
}
pub fn get_pk_file_group(&self) -> Option<String> {
match &self.global {
Some(g) => g.pk_file_group.to_owned(),
None => None,
}
}
}
#[derive(Deserialize)]
pub struct GlobalOptions {
pub accounts_directory: Option<String>,
pub certificates_directory: Option<String>,
pub cert_file_mode: Option<u32>,
pub cert_file_user: Option<String>,
pub cert_file_group: Option<String>,
pub pk_file_mode: Option<u32>,
pub pk_file_user: Option<String>,
pub pk_file_group: Option<String>,
}
#[derive(Deserialize)]
pub struct Endpoint {
pub name: String,
pub url: String,
}
#[derive(Deserialize, Clone, Debug)]
pub struct Hook {
pub name: String,
pub cmd: String,
pub args: Option<Vec<String>>,
pub stdin: Option<String>,
pub stdout: Option<String>,
pub stderr: Option<String>,
}
#[derive(Deserialize)]
pub struct Certificate {
pub email: String,
pub endpoint: String,
pub domains: Vec<String>,
pub challenge: String,
pub challenge_hooks: Vec<String>,
pub post_operation_hook: Option<Vec<String>>,
pub algorithm: Option<String>,
pub directory: Option<String>,
pub name: Option<String>,
pub name_format: Option<String>,
pub formats: Option<Vec<String>>,
}
impl Certificate {
pub fn get_algorithm(&self) -> Result<Algorithm, Error> {
let algo = match &self.algorithm {
Some(a) => &a,
None => crate::DEFAULT_ALGO,
};
Algorithm::from_str(algo)
}
pub fn get_challenge(&self) -> Result<Challenge, Error> {
Challenge::from_str(&self.challenge)
}
pub fn get_formats(&self) -> Result<Vec<Format>, Error> {
let ret = match &self.formats {
Some(fmts) => {
let mut lst = Vec::new();
for f in fmts.iter() {
lst.push(match f.as_str() {
"der" => Format::Der,
"pem" => Format::Pem,
_ => return Err(Error::new(&format!("{}: unknown format.", f))),
});
}
lst.sort();
lst.dedup();
lst
}
None => vec![crate::DEFAULT_FMT],
};
Ok(ret)
}
pub fn get_crt_name(&self) -> String {
match &self.name {
Some(n) => n.to_string(),
None => self.domains.first().unwrap().to_string(),
}
}
pub fn get_crt_name_format(&self) -> String {
match &self.name_format {
Some(n) => n.to_string(),
None => crate::DEFAULT_CERT_FORMAT.to_string(),
}
}
pub fn get_crt_dir(&self, cnf: &Config) -> String {
let crt_directory = match &self.directory {
Some(d) => &d,
None => match &cnf.global {
Some(g) => match &g.certificates_directory {
Some(d) => &d,
None => crate::DEFAULT_CERT_DIR,
},
None => crate::DEFAULT_CERT_DIR,
},
};
crt_directory.to_string()
}
pub fn get_remote_url(&self, cnf: &Config) -> Result<String, Error> {
for endpoint in cnf.endpoint.iter() {
if endpoint.name == self.endpoint {
return Ok(endpoint.url.to_owned());
}
}
Err(Error::new(&format!("{}: unknown endpoint.", self.endpoint)))
}
pub fn get_challenge_hooks(&self, cnf: &Config) -> Result<Vec<Hook>, Error> {
let mut res = vec![];
for name in self.challenge_hooks.iter() {
let h = cnf.get_hook(&name)?;
res.push(h);
}
Ok(res)
}
pub fn get_post_operation_hook(&self, cnf: &Config) -> Result<Vec<Hook>, Error> {
let mut res = vec![];
match &self.post_operation_hook {
Some(po_hooks) => for name in po_hooks.iter() {
let h = cnf.get_hook(&name)?;
res.push(h);
},
None => {}
};
Ok(res)
}
}
fn create_dir(path: &str) -> Result<(), Error> {
if Path::new(path).is_dir() {
Ok(())
} else {
fs::create_dir_all(path)?;
Ok(())
}
}
fn init_directories(config: &Config) -> Result<(), Error> {
create_dir(&config.get_account_dir())?;
for crt in config.certificate.iter() {
create_dir(&crt.get_crt_dir(config))?;
}
Ok(())
}
pub fn from_file(file: &str) -> Result<Config, Error> {
info!("Loading configuration file: {}", file);
let mut file = File::open(file)?;
let mut contents = String::new();
file.read_to_string(&mut contents)?;
let config: Config = toml::from_str(&contents)?;
init_directories(&config)?;
Ok(config)
}

213
acmed/src/encoding.rs
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@ -0,0 +1,213 @@
use acme_lib::Error;
use acme_lib::persist::PersistKind;
use crate::acmed::Format;
use log::debug;
use pem::{encode, Pem};
enum ConversionType {
PemToDer,
DerToPem,
None,
}
impl ConversionType {
fn get(from: &Format, to: &Format) -> Self {
match from {
Format::Pem => match to {
Format::Pem => ConversionType::None,
Format::Der => ConversionType::PemToDer,
},
Format::Der => match to {
Format::Pem => ConversionType::DerToPem,
Format::Der => ConversionType::None,
},
}
}
}
fn pem_to_der(data: &[u8]) -> Result<Vec<u8>, Error> {
// We need to convert all CRLF into LF since x509_parser only supports the later.
let mut data = data.to_vec();
data.retain(|&c| c != 0x0d);
match x509_parser::pem::pem_to_der(&data) {
Ok((_, cert)) => Ok(cert.contents),
Err(_) => Err(Error::Other("invalid PEM certificate".to_string())),
}
}
fn der_to_pem(data: &[u8], kind: PersistKind) -> Result<Vec<u8>, Error> {
// TODO: allow the user to specify if we should use CRLF or LF (default is CRLF).
let tag_str = match kind {
PersistKind::AccountPrivateKey => "PRIVATE KEY",
PersistKind::PrivateKey => "PRIVATE KEY",
PersistKind::Certificate => "CERTIFICATE",
};
let pem = Pem {
tag: String::from(tag_str),
contents: data.to_vec(),
};
let res = encode(&pem);
Ok(res.into_bytes())
}
/// Convert a certificate encoded in a format into another format.
///
/// Warning: if the data contains multiple certificates (eg: a PEM
/// certificate chain), converting to DER will only include the first
/// certificate, the others will be lost.
pub fn convert(
data: &[u8],
from: &Format,
to: &Format,
kind: PersistKind,
) -> Result<Vec<u8>, Error> {
debug!("Converting a certificate from {} to {}", from, to);
match ConversionType::get(from, to) {
ConversionType::PemToDer => pem_to_der(data),
ConversionType::DerToPem => der_to_pem(data, kind),
ConversionType::None => Ok(data.to_vec()),
}
}
#[cfg(test)]
mod tests {
use acme_lib::persist::PersistKind;
use crate::acmed::Format;
use super::convert;
// Test data generated using:
//
// openssl req -x509 -nodes -newkey ED25519 -keyout key.pem -out cert.pem -days 365
// openssl pkey -inform PEM -outform DER -in key.pem -out key.der
// openssl x509 -inform PEM -outform DER -in cert.pem -out cert.der
pub const PK_PEM: &'static [u8] = b"-----BEGIN PRIVATE KEY-----\r
MC4CAQAwBQYDK2VwBCIEIJRKGvS3yKtxf+zjzvDTHx2dIcDXz0LKeBLnqE0H8ALb\r
-----END PRIVATE KEY-----\r\n";
pub const PK_DER: &'static [u8] = b"\x30\x2E\x02\x01\x00\x30\x05\x06\x03\
\x2B\x65\x70\x04\x22\x04\x20\x94\x4A\x1A\xF4\xB7\xC8\xAB\x71\x7F\xEC\xE3\xCE\
\xF0\xD3\x1F\x1D\x9D\x21\xC0\xD7\xCF\x42\xCA\x78\x12\xE7\xA8\x4D\x07\xF0\x02\
\xDB";
pub const CERT_PEM: &'static [u8] = b"-----BEGIN CERTIFICATE-----\r
MIICLzCCAeGgAwIBAgIUdlMenq7MVkx5b1lFrvaBwvjlIEQwBQYDK2VwMIGMMQsw\r
CQYDVQQGEwJGUjEZMBcGA1UECAwQw4PCjmxlLWRlLUZyYW5jZTEOMAwGA1UEBwwF\r
UGFyaXMxDjAMBgNVBAoMBUFDTUVkMRkwFwYDVQQDDBB0ZXN0LmV4YW1wbGUub3Jn\r
MScwJQYJKoZIhvcNAQkBFhhpbnZhbGlkQHRlc3QuZXhhbXBsZS5vcmcwHhcNMTkw\r
MzE0MTE0NDI1WhcNMjAwMzEzMTE0NDI1WjCBjDELMAkGA1UEBhMCRlIxGTAXBgNV\r
BAgMEMODwo5sZS1kZS1GcmFuY2UxDjAMBgNVBAcMBVBhcmlzMQ4wDAYDVQQKDAVB\r
Q01FZDEZMBcGA1UEAwwQdGVzdC5leGFtcGxlLm9yZzEnMCUGCSqGSIb3DQEJARYY\r
aW52YWxpZEB0ZXN0LmV4YW1wbGUub3JnMCowBQYDK2VwAyEAboP+S9yfoP3euk+C\r
FgMIZ9J/Q6KxLwteCAvJSkbWTwKjUzBRMB0GA1UdDgQWBBT49UVSayhFWUaRiyiB\r
oXkSoRgynTAfBgNVHSMEGDAWgBT49UVSayhFWUaRiyiBoXkSoRgynTAPBgNVHRMB\r
Af8EBTADAQH/MAUGAytlcANBAPITjbIYNioMcpMDMvbyzHf2IqPFiNW/Ce3KTS8T\r
zseNNFkN0oOc55UAd2ECe6gGOXB0r4MycFOM9ccR2t8ttwE=\r
-----END CERTIFICATE-----\r\n";
pub const CERT_DER: &'static [u8] = b"\x30\x82\x02\x2F\x30\x82\x01\xE1\xA0\
\x03\x02\x01\x02\x02\x14\x76\x53\x1E\x9E\xAE\xCC\x56\x4C\x79\x6F\x59\x45\xAE\
\xF6\x81\xC2\xF8\xE5\x20\x44\x30\x05\x06\x03\x2B\x65\x70\x30\x81\x8C\x31\x0B\
\x30\x09\x06\x03\x55\x04\x06\x13\x02\x46\x52\x31\x19\x30\x17\x06\x03\x55\x04\
\x08\x0C\x10\xC3\x83\xC2\x8E\x6C\x65\x2D\x64\x65\x2D\x46\x72\x61\x6E\x63\x65\
\x31\x0E\x30\x0C\x06\x03\x55\x04\x07\x0C\x05\x50\x61\x72\x69\x73\x31\x0E\x30\
\x0C\x06\x03\x55\x04\x0A\x0C\x05\x41\x43\x4D\x45\x64\x31\x19\x30\x17\x06\x03\
\x55\x04\x03\x0C\x10\x74\x65\x73\x74\x2E\x65\x78\x61\x6D\x70\x6C\x65\x2E\x6F\
\x72\x67\x31\x27\x30\x25\x06\x09\x2A\x86\x48\x86\xF7\x0D\x01\x09\x01\x16\x18\
\x69\x6E\x76\x61\x6C\x69\x64\x40\x74\x65\x73\x74\x2E\x65\x78\x61\x6D\x70\x6C\
\x65\x2E\x6F\x72\x67\x30\x1E\x17\x0D\x31\x39\x30\x33\x31\x34\x31\x31\x34\x34\
\x32\x35\x5A\x17\x0D\x32\x30\x30\x33\x31\x33\x31\x31\x34\x34\x32\x35\x5A\x30\
\x81\x8C\x31\x0B\x30\x09\x06\x03\x55\x04\x06\x13\x02\x46\x52\x31\x19\x30\x17\
\x06\x03\x55\x04\x08\x0C\x10\xC3\x83\xC2\x8E\x6C\x65\x2D\x64\x65\x2D\x46\x72\
\x61\x6E\x63\x65\x31\x0E\x30\x0C\x06\x03\x55\x04\x07\x0C\x05\x50\x61\x72\x69\
\x73\x31\x0E\x30\x0C\x06\x03\x55\x04\x0A\x0C\x05\x41\x43\x4D\x45\x64\x31\x19\
\x30\x17\x06\x03\x55\x04\x03\x0C\x10\x74\x65\x73\x74\x2E\x65\x78\x61\x6D\x70\
\x6C\x65\x2E\x6F\x72\x67\x31\x27\x30\x25\x06\x09\x2A\x86\x48\x86\xF7\x0D\x01\
\x09\x01\x16\x18\x69\x6E\x76\x61\x6C\x69\x64\x40\x74\x65\x73\x74\x2E\x65\x78\
\x61\x6D\x70\x6C\x65\x2E\x6F\x72\x67\x30\x2A\x30\x05\x06\x03\x2B\x65\x70\x03\
\x21\x00\x6E\x83\xFE\x4B\xDC\x9F\xA0\xFD\xDE\xBA\x4F\x82\x16\x03\x08\x67\xD2\
\x7F\x43\xA2\xB1\x2F\x0B\x5E\x08\x0B\xC9\x4A\x46\xD6\x4F\x02\xA3\x53\x30\x51\
\x30\x1D\x06\x03\x55\x1D\x0E\x04\x16\x04\x14\xF8\xF5\x45\x52\x6B\x28\x45\x59\
\x46\x91\x8B\x28\x81\xA1\x79\x12\xA1\x18\x32\x9D\x30\x1F\x06\x03\x55\x1D\x23\
\x04\x18\x30\x16\x80\x14\xF8\xF5\x45\x52\x6B\x28\x45\x59\x46\x91\x8B\x28\x81\
\xA1\x79\x12\xA1\x18\x32\x9D\x30\x0F\x06\x03\x55\x1D\x13\x01\x01\xFF\x04\x05\
\x30\x03\x01\x01\xFF\x30\x05\x06\x03\x2B\x65\x70\x03\x41\x00\xF2\x13\x8D\xB2\
\x18\x36\x2A\x0C\x72\x93\x03\x32\xF6\xF2\xCC\x77\xF6\x22\xA3\xC5\x88\xD5\xBF\
\x09\xED\xCA\x4D\x2F\x13\xCE\xC7\x8D\x34\x59\x0D\xD2\x83\x9C\xE7\x95\x00\x77\
\x61\x02\x7B\xA8\x06\x39\x70\x74\xAF\x83\x32\x70\x53\x8C\xF5\xC7\x11\xDA\xDF\
\x2D\xB7\x01";
#[test]
fn test_der_to_der() {
let res = convert(
&CERT_DER,
&Format::Der,
&Format::Der,
&PersistKind::Certificate,
);
assert!(res.is_ok());
let res = res.unwrap();
assert_eq!(CERT_DER, res.as_slice());
}
#[test]
fn test_pem_to_pem() {
let res = convert(
&CERT_PEM,
&Format::Pem,
&Format::Pem,
&PersistKind::Certificate,
);
assert!(res.is_ok());
let res = res.unwrap();
assert_eq!(CERT_PEM, res.as_slice());
}
#[test]
fn test_der_to_pem_pk() {
let res = convert(
&PK_DER,
&Format::Der,
&Format::Pem,
&PersistKind::PrivateKey,
);
assert!(res.is_ok());
let res = res.unwrap();
assert_eq!(PK_PEM, res.as_slice());
}
#[test]
fn test_der_to_pem_crt() {
let res = convert(
&CERT_DER,
&Format::Der,
&Format::Pem,
&PersistKind::Certificate,
);
assert!(res.is_ok());
let res = res.unwrap();
assert_eq!(CERT_PEM, res.as_slice());
}
#[test]
fn test_pem_to_der_crt() {
let res = convert(
&CERT_PEM,
&Format::Pem,
&Format::Der,
&PersistKind::Certificate,
);
assert!(res.is_ok());
let res = res.unwrap();
assert_eq!(CERT_DER, res.as_slice());
}
#[test]
fn test_pem_to_der_pk() {
let res = convert(
&PK_PEM,
&Format::Pem,
&Format::Der,
&PersistKind::PrivateKey,
);
assert!(res.is_ok());
let res = res.unwrap();
assert_eq!(PK_DER, res.as_slice());
}
}

58
acmed/src/errors.rs
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@ -0,0 +1,58 @@
use std::fmt;
pub struct Error {
pub message: String,
}
impl Error {
pub fn new(msg: &str) -> Self {
Error {
message: msg.to_string(),
}
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.message)
}
}
impl From<std::io::Error> for Error {
fn from(error: std::io::Error) -> Self {
Error::new(&format!("IO error: {}", error))
}
}
impl From<toml::de::Error> for Error {
fn from(error: toml::de::Error) -> Self {
Error::new(&format!("IO error: {}", error))
}
}
impl From<acme_lib::Error> for Error {
fn from(error: acme_lib::Error) -> Self {
let msg = match error {
acme_lib::Error::ApiProblem(e) => format!("An API call failed: {}", e),
acme_lib::Error::Call(e) => format!("An API call failed: {}", e),
acme_lib::Error::Base64Decode(e) => format!("base 64 decode error: {}", e),
acme_lib::Error::Json(e) => format!("JSON error: {}", e),
acme_lib::Error::Io(e) => format!("IO error: {}", e),
acme_lib::Error::Other(s) => s,
};
Error::new(&msg)
}
}
impl From<handlebars::TemplateRenderError> for Error {
fn from(error: handlebars::TemplateRenderError) -> Self {
Error::new(&format!("Template error: {}", error))
}
}
#[cfg(unix)]
impl From<nix::Error> for Error {
fn from(error: nix::Error) -> Self {
Error::new(&format!("{}", error))
}
}

75
acmed/src/main.rs
View File

@ -0,0 +1,75 @@
use clap::{App, Arg};
use env_logger::Builder;
use log::{error, LevelFilter};
mod acmed;
mod config;
mod encoding;
mod errors;
mod storage;
pub const DEFAULT_CONFIG_FILE: &str = "/etc/acmed/acmed.toml";
pub const DEFAULT_ACCOUNTS_DIR: &str = "/etc/acmed/accounts";
pub const DEFAULT_CERT_DIR: &str = "/etc/acmed/certs";
pub const DEFAULT_CERT_FORMAT: &str = "{name}_{algo}.{kind}.{ext}";
pub const DEFAULT_ALGO: &str = "rsa2048";
pub const DEFAULT_FMT: acmed::Format = acmed::Format::Pem;
pub const DEFAULT_SLEEP_TIME: u64 = 3600;
pub const DEFAULT_POOL_TIME: u64 = 5000;
pub const DEFAULT_CERT_FILE_MODE: u32 = 0o644;
pub const DEFAULT_PK_FILE_MODE: u32 = 0o600;
fn main() {
let matches = App::new("acmed")
.version("0.1.0")
.arg(
Arg::with_name("config")
.short("c")
.long("config")
.help("Specify an alternative configuration file.")
.takes_value(true)
.value_name("FILE"),
)
.arg(
Arg::with_name("log-level")
.long("log-level")
.help("Specify the log level.")
.takes_value(true)
.value_name("LEVEL")
.possible_values(&["error", "warn", "info", "debug", "trace"]),
)
.get_matches();
let mut builder = Builder::from_env("ACMED_LOG_LEVEL");
if let Some(v) = matches.value_of("log-level") {
match v {
"error" => {
builder.filter_level(LevelFilter::Error);
}
"warn" => {
builder.filter_level(LevelFilter::Warn);
}
"info" => {
builder.filter_level(LevelFilter::Info);
}
"debug" => {
builder.filter_level(LevelFilter::Debug);
}
"trace" => {
builder.filter_level(LevelFilter::Trace);
}
_ => {}
}
};
builder.init();
let config_file = matches.value_of("config").unwrap_or(DEFAULT_CONFIG_FILE);
let mut srv = match acmed::Acmed::new(&config_file) {
Ok(s) => s,
Err(e) => {
error!("{}", e);
std::process::exit(1);
}
};
srv.run();
}

173
acmed/src/storage.rs
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@ -0,0 +1,173 @@
use acme_lib::Error;
use acme_lib::persist::{Persist, PersistKey, PersistKind};
use crate::acmed::{Algorithm, Format};
use crate::encoding::convert;
use log::debug;
use std::fs::{File, OpenOptions};
use std::io::prelude::*;
use std::path::PathBuf;
#[cfg(target_family = "unix")]
use std::os::unix::fs::OpenOptionsExt;
macro_rules! get_file_name {
($self: ident, $kind: ident, $fmt: ident) => {{
let kind = match $kind {
PersistKind::Certificate => "crt",
PersistKind::PrivateKey => "pk",
PersistKind::AccountPrivateKey => "pk",
};
format!(
// TODO: use self.crt_name_format instead of a string literal
"{name}_{algo}.{kind}.{ext}",
name = $self.crt_name,
algo = $self.algo.to_string(),
kind = kind,
ext = $fmt.to_string()
)
}};
}
#[derive(Clone, Debug)]
pub struct Storage {
pub account_directory: String,
pub account_name: String,
pub crt_directory: String,
pub crt_name: String,
pub crt_name_format: String,
pub formats: Vec<Format>,
pub algo: Algorithm,
pub cert_file_mode: u32,
pub cert_file_owner: Option<String>,
pub cert_file_group: Option<String>,
pub pk_file_mode: u32,
pub pk_file_owner: Option<String>,
pub pk_file_group: Option<String>,
}
impl Storage {
#[cfg(unix)]
fn get_file_mode(&self, kind: PersistKind) -> u32 {
match kind {
PersistKind::Certificate => self.cert_file_mode,
PersistKind::PrivateKey | PersistKind::AccountPrivateKey => self.pk_file_mode,
}
}
#[cfg(unix)]
fn set_owner(&self, path: &PathBuf, kind: PersistKind) -> Result<(), Error> {
let (uid, gid) = match kind {
PersistKind::Certificate => (&self.cert_file_owner, &self.cert_file_group),
PersistKind::PrivateKey | PersistKind::AccountPrivateKey => {
(&self.pk_file_owner, &self.pk_file_group)
}
};
let uid = match uid {
Some(u) => if u.bytes().all(|b| b.is_ascii_digit()) {
let raw_uid = u.parse::<u32>().unwrap();
let nix_uid = nix::unistd::Uid::from_raw(raw_uid);
Some(nix_uid)
} else {
// TODO: handle username
None
},
None => None,
};
let gid = match gid {
Some(g) => if g.bytes().all(|b| b.is_ascii_digit()) {
let raw_gid = g.parse::<u32>().unwrap();
let nix_gid = nix::unistd::Gid::from_raw(raw_gid);
Some(nix_gid)
} else {
// TODO: handle group name
None
},
None => None,
};
match nix::unistd::chown(path, uid, gid) {
Ok(_) => Ok(()),
Err(e) => Err(Error::Other(format!("{}", e))),
}
}
fn get_file_path(&self, kind: PersistKind, fmt: &Format) -> PathBuf {
let base_path = match kind {
PersistKind::Certificate => &self.crt_directory,
PersistKind::PrivateKey => &self.crt_directory,
PersistKind::AccountPrivateKey => &self.account_directory,
};
let file_name = match kind {
PersistKind::Certificate => get_file_name!(self, kind, fmt),
PersistKind::PrivateKey => get_file_name!(self, kind, fmt),
PersistKind::AccountPrivateKey => {
format!("{}.{}", self.account_name.to_owned(), fmt.to_string())
}
};
let mut path = PathBuf::from(base_path);
path.push(file_name);
path
}
pub fn get_certificate(&self, fmt: &Format) -> Result<Option<Vec<u8>>, Error> {
self.get_file(PersistKind::Certificate, fmt)
}
pub fn get_file(&self, kind: PersistKind, fmt: &Format) -> Result<Option<Vec<u8>>, Error> {
let src_fmt = if self.formats.contains(fmt) {
fmt
} else {
self.formats.first().unwrap()
};
let path = self.get_file_path(kind, src_fmt);
debug!("Reading file {:?}", path);
if !path.exists() {
return Ok(None);
}
let mut file = File::open(&path)?;
let mut contents = vec![];
file.read_to_end(&mut contents)?;
if contents.is_empty() {
return Ok(None);
}
if src_fmt == fmt {
Ok(Some(contents))
} else {
let ret = convert(&contents, src_fmt, fmt, kind)?;
Ok(Some(ret))
}
}
}
impl Persist for Storage {
fn put(&self, key: &PersistKey, value: &[u8]) -> Result<(), Error> {
for fmt in self.formats.iter() {
let path = self.get_file_path(key.kind, &fmt);
debug!("Writing file {:?}", path);
{
let mut f = if cfg!(unix) {
let mut options = OpenOptions::new();
options.mode(self.get_file_mode(key.kind));
options.write(true).create(true).open(&path)?
} else {
File::create(&path)?
};
match fmt {
Format::Der => {
let val = convert(value, &Format::Pem, &Format::Der, key.kind)?;
f.write_all(&val)?;
}
Format::Pem => f.write_all(value)?,
};
f.sync_all()?;
}
if cfg!(unix) {
self.set_owner(&path, key.kind)?;
}
}
Ok(())
}
fn get(&self, key: &PersistKey) -> Result<Option<Vec<u8>>, Error> {
self.get_file(key.kind, &Format::Pem)
}
}
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