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chore: remove x509-parser (#11247)

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Both crates seem well maintained. x509-cert is part of the high quality
RustCrypto project that we already make heavy use of, and I think it
makes sense to reduce the dependencies where possible.
This commit is contained in:
Conrad Ludgate
2025-03-18 13:05:08 +00:00
committed by GitHub
parent 2dfff6a2a3
commit fd41ab9bb6
8 changed files with 31 additions and 119 deletions
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proxy/src/tls/mod.rs
+14 -14
View File
@@ -6,7 +6,7 @@ use anyhow::Context;
use rustls::pki_types::CertificateDer;
use sha2::{Digest, Sha256};
use tracing::{error, info};
use x509_parser::oid_registry;
use x509_cert::der::{Reader, SliceReader, oid};
/// <https://github.com/postgres/postgres/blob/ca481d3c9ab7bf69ff0c8d71ad3951d407f6a33c/src/include/libpq/pqcomm.h#L159>
pub const PG_ALPN_PROTOCOL: &[u8] = b"postgresql";
@@ -41,27 +41,27 @@ pub enum TlsServerEndPoint {
impl TlsServerEndPoint {
pub fn new(cert: &CertificateDer<'_>) -> anyhow::Result<Self> {
let sha256_oids = [
const SHA256_OIDS: &[oid::ObjectIdentifier] = &[
// I'm explicitly not adding MD5 or SHA1 here... They're bad.
oid_registry::OID_SIG_ECDSA_WITH_SHA256,
oid_registry::OID_PKCS1_SHA256WITHRSA,
oid::db::rfc5912::ECDSA_WITH_SHA_256,
oid::db::rfc5912::SHA_256_WITH_RSA_ENCRYPTION,
];
let pem = x509_parser::parse_x509_certificate(cert)
.context("Failed to parse PEM object from cerficiate")?
.1;
let certificate = SliceReader::new(cert)
.context("Failed to parse cerficiate")?
.decode::<x509_cert::Certificate>()
.context("Failed to parse cerficiate")?;
info!(subject = %pem.subject, "parsing TLS certificate");
let subject = certificate.tbs_certificate.subject;
info!(%subject, "parsing TLS certificate");
let reg = oid_registry::OidRegistry::default().with_all_crypto();
let oid = pem.signature_algorithm.oid();
let alg = reg.get(oid);
if sha256_oids.contains(oid) {
let oid = certificate.signature_algorithm.oid;
if SHA256_OIDS.contains(&oid) {
let tls_server_end_point: [u8; 32] = Sha256::new().chain_update(cert).finalize().into();
info!(subject = %pem.subject, signature_algorithm = alg.map(|a| a.description()), tls_server_end_point = %base64::encode(tls_server_end_point), "determined channel binding");
info!(%subject, tls_server_end_point = %base64::encode(tls_server_end_point), "determined channel binding");
Ok(Self::Sha256(tls_server_end_point))
} else {
error!(subject = %pem.subject, signature_algorithm = alg.map(|a| a.description()), "unknown channel binding");
error!(%subject, "unknown channel binding");
Ok(Self::Undefined)
}
}
proxy/src/tls/server_config.rs
+7 -4
View File
@@ -5,6 +5,7 @@ use anyhow::{Context, bail};
use itertools::Itertools;
use rustls::crypto::ring::{self, sign};
use rustls::pki_types::{CertificateDer, PrivateKeyDer};
use x509_cert::der::{Reader, SliceReader};
use super::{PG_ALPN_PROTOCOL, TlsServerEndPoint};
@@ -131,11 +132,13 @@ impl CertResolver {
let first_cert = &cert_chain[0];
let tls_server_end_point = TlsServerEndPoint::new(first_cert)?;
let pem = x509_parser::parse_x509_certificate(first_cert)
.context("Failed to parse PEM object from cerficiate")?
.1;
let common_name = pem.subject().to_string();
let certificate = SliceReader::new(first_cert)
.context("Failed to parse cerficiate")?
.decode::<x509_cert::Certificate>()
.context("Failed to parse cerficiate")?;
let common_name = certificate.tbs_certificate.subject.to_string();
// We need to get the canonical name for this certificate so we can match them against any domain names
// seen within the proxy codebase.