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// Copyright 2024 Cloudflare, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#![warn(clippy::all)]
use std::fs::File;
use std::io::BufReader;
use log::{error, warn};
pub use no_debug::{Ellipses, NoDebug, WithTypeInfo};
pub use rustls::{version, ClientConfig, RootCertStore, ServerConfig, Stream};
pub use rustls_native_certs::load_native_certs;
use rustls_pemfile::Item;
pub use rustls_pki_types::{CertificateDer, PrivateKeyDer, ServerName};
pub use tokio_rustls::client::TlsStream as ClientTlsStream;
pub use tokio_rustls::server::TlsStream as ServerTlsStream;
pub use tokio_rustls::{Accept, Connect, TlsAcceptor, TlsConnector, TlsStream};
fn load_file(path: &String) -> BufReader<File> {
let file = File::open(path).expect("io error");
BufReader::new(file)
}
fn load_pem_file(path: &String) -> Result<Vec<Item>, std::io::Error> {
let iter: Vec<Item> = rustls_pemfile::read_all(&mut load_file(path))
.filter_map(|f| {
if let Ok(f) = f {
Some(f)
} else {
let err = f.err().unwrap();
warn!(
"Skipping PEM element in file \"{}\" due to error \"{}\"",
path, err
);
None
}
})
.collect();
Ok(iter)
}
pub fn load_ca_file_into_store(path: &String, cert_store: &mut RootCertStore) {
let ca_file = load_pem_file(path);
match ca_file {
Ok(cas) => {
cas.into_iter().for_each(|pem_item| {
// only loading certificates, handling a CA file
match pem_item {
Item::X509Certificate(content) => match cert_store.add(content) {
Ok(_) => {}
Err(err) => {
error!("{}", err)
}
},
Item::Pkcs1Key(_) => {}
Item::Pkcs8Key(_) => {}
Item::Sec1Key(_) => {}
Item::Crl(_) => {}
Item::Csr(_) => {}
_ => {}
}
});
}
Err(err) => {
error!(
"Failed to load configured ca file located at \"{}\", error: \"{}\"",
path, err
);
}
}
}
pub fn load_platform_certs_incl_env_into_store(ca_certs: &mut RootCertStore) {
// this includes handling of ENV vars SSL_CERT_FILE & SSL_CERT_DIR
let native_platform_certs = load_native_certs();
match native_platform_certs {
Ok(certs) => {
for cert in certs {
ca_certs.add(cert).unwrap();
}
}
Err(err) => {
error!(
"Failed to load native platform ca-certificates: \"{:?}\". Continuing without ...",
err
);
}
}
}
pub fn load_certs_key_file<'a>(
cert: &String,
key: &String,
) -> Option<(Vec<CertificateDer<'a>>, PrivateKeyDer<'a>)> {
let certs_file = load_pem_file(cert)
.unwrap_or_else(|_| panic!("Failed to load configured cert file located at {}.", cert));
let key_file = load_pem_file(key)
.unwrap_or_else(|_| panic!("Failed to load configured key file located at {}.", cert));
let mut certs: Vec<CertificateDer<'a>> = vec![];
certs_file.into_iter().for_each(|i| {
if let Item::X509Certificate(cert) = i {
certs.push(cert)
}
});
let private_key = match key_file.into_iter().next()? {
Item::Pkcs1Key(key) => Some(PrivateKeyDer::from(key)),
Item::Pkcs8Key(key) => Some(PrivateKeyDer::from(key)),
Item::Sec1Key(key) => Some(PrivateKeyDer::from(key)),
_ => None,
};
if certs.is_empty() || private_key.is_none() {
None
} else {
Some((certs, private_key?))
}
}
pub fn load_pem_file_ca(path: &String) -> Vec<u8> {
let mut reader = load_file(path);
let cas_file = rustls_pemfile::certs(&mut reader);
let ca = cas_file.into_iter().find_map(|pem_item| {
if let Ok(item) = pem_item {
Some(item)
} else {
None
}
});
match ca {
None => Vec::new(),
Some(ca) => ca.to_vec(),
}
}
pub fn load_pem_file_private_key(path: &String) -> Vec<u8> {
let key = rustls_pemfile::private_key(&mut load_file(path));
if let Ok(Some(key)) = key {
return key.secret_der().to_vec();
}
Vec::new()
}
pub fn hash_certificate(cert: CertificateDer) -> Vec<u8> {
let hash = ring::digest::digest(&ring::digest::SHA256, cert.as_ref());
hash.as_ref().to_vec()
}
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