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denoland-deno/ext/tls/lib.rs
Bartek Iwańczuk cb87cb0283
fix: support "fetch" over HTTPS for IP addresses (#18499)
This commit adds support for connecting to IP addresses over HTTPS.

This is done by updating "rustls" to "0.21.0" and other related crates.

Closes https://github.com/denoland/deno/issues/7660
Closes https://github.com/denoland/deno/issues/17967

---------

Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
2023-05-17 02:19:23 +02:00

292 lines
8.6 KiB
Rust

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
pub use rustls;
pub use rustls_native_certs;
pub use rustls_pemfile;
pub use webpki;
pub use webpki_roots;
use deno_core::anyhow::anyhow;
use deno_core::error::custom_error;
use deno_core::error::AnyError;
use rustls::client::HandshakeSignatureValid;
use rustls::client::ServerCertVerified;
use rustls::client::ServerCertVerifier;
use rustls::client::WebPkiVerifier;
use rustls::Certificate;
use rustls::ClientConfig;
use rustls::DigitallySignedStruct;
use rustls::Error;
use rustls::PrivateKey;
use rustls::RootCertStore;
use rustls::ServerName;
use rustls_pemfile::certs;
use rustls_pemfile::pkcs8_private_keys;
use rustls_pemfile::rsa_private_keys;
use serde::Deserialize;
use std::io::BufRead;
use std::io::BufReader;
use std::io::Cursor;
use std::sync::Arc;
use std::time::SystemTime;
/// Lazily resolves the root cert store.
///
/// This was done because the root cert store is not needed in all cases
/// and takes a bit of time to initialize.
pub trait RootCertStoreProvider: Send + Sync {
fn get_or_try_init(&self) -> Result<&RootCertStore, AnyError>;
}
// This extension has no runtime apis, it only exports some shared native functions.
deno_core::extension!(deno_tls);
struct DefaultSignatureVerification;
impl ServerCertVerifier for DefaultSignatureVerification {
fn verify_server_cert(
&self,
_end_entity: &Certificate,
_intermediates: &[Certificate],
_server_name: &ServerName,
_scts: &mut dyn Iterator<Item = &[u8]>,
_ocsp_response: &[u8],
_now: SystemTime,
) -> Result<ServerCertVerified, Error> {
Err(Error::General("Should not be used".to_string()))
}
}
pub struct NoCertificateVerification(pub Vec<String>);
impl ServerCertVerifier for NoCertificateVerification {
fn verify_server_cert(
&self,
end_entity: &Certificate,
intermediates: &[Certificate],
server_name: &ServerName,
scts: &mut dyn Iterator<Item = &[u8]>,
ocsp_response: &[u8],
now: SystemTime,
) -> Result<ServerCertVerified, Error> {
if self.0.is_empty() {
return Ok(ServerCertVerified::assertion());
}
let dns_name_or_ip_address = match server_name {
ServerName::DnsName(dns_name) => dns_name.as_ref().to_owned(),
ServerName::IpAddress(ip_address) => ip_address.to_string(),
_ => {
// NOTE(bartlomieju): `ServerName` is a non-exhaustive enum
// so we have this catch all errors here.
return Err(Error::General("Unknown `ServerName` variant".to_string()));
}
};
if self.0.contains(&dns_name_or_ip_address) {
Ok(ServerCertVerified::assertion())
} else {
let root_store = create_default_root_cert_store();
let verifier = WebPkiVerifier::new(root_store, None);
verifier.verify_server_cert(
end_entity,
intermediates,
server_name,
scts,
ocsp_response,
now,
)
}
}
fn verify_tls12_signature(
&self,
message: &[u8],
cert: &rustls::Certificate,
dss: &DigitallySignedStruct,
) -> Result<HandshakeSignatureValid, Error> {
if self.0.is_empty() {
return Ok(HandshakeSignatureValid::assertion());
}
filter_invalid_encoding_err(
DefaultSignatureVerification.verify_tls12_signature(message, cert, dss),
)
}
fn verify_tls13_signature(
&self,
message: &[u8],
cert: &rustls::Certificate,
dss: &DigitallySignedStruct,
) -> Result<HandshakeSignatureValid, Error> {
if self.0.is_empty() {
return Ok(HandshakeSignatureValid::assertion());
}
filter_invalid_encoding_err(
DefaultSignatureVerification.verify_tls13_signature(message, cert, dss),
)
}
}
#[derive(Deserialize, Default, Debug, Clone)]
#[serde(rename_all = "camelCase")]
#[serde(default)]
pub struct Proxy {
pub url: String,
pub basic_auth: Option<BasicAuth>,
}
#[derive(Deserialize, Default, Debug, Clone)]
#[serde(default)]
pub struct BasicAuth {
pub username: String,
pub password: String,
}
pub fn create_default_root_cert_store() -> RootCertStore {
let mut root_cert_store = RootCertStore::empty();
// TODO(@justinmchase): Consider also loading the system keychain here
root_cert_store.add_server_trust_anchors(
webpki_roots::TLS_SERVER_ROOTS.0.iter().map(|ta| {
rustls::OwnedTrustAnchor::from_subject_spki_name_constraints(
ta.subject,
ta.spki,
ta.name_constraints,
)
}),
);
root_cert_store
}
pub fn create_client_config(
root_cert_store: Option<RootCertStore>,
ca_certs: Vec<Vec<u8>>,
unsafely_ignore_certificate_errors: Option<Vec<String>>,
client_cert_chain_and_key: Option<(String, String)>,
) -> Result<ClientConfig, AnyError> {
let maybe_cert_chain_and_key =
if let Some((cert_chain, private_key)) = client_cert_chain_and_key {
// The `remove` is safe because load_private_keys checks that there is at least one key.
let private_key = load_private_keys(private_key.as_bytes())?.remove(0);
let cert_chain = load_certs(&mut cert_chain.as_bytes())?;
Some((cert_chain, private_key))
} else {
None
};
if let Some(ic_allowlist) = unsafely_ignore_certificate_errors {
let client_config = ClientConfig::builder()
.with_safe_defaults()
.with_custom_certificate_verifier(Arc::new(NoCertificateVerification(
ic_allowlist,
)));
// NOTE(bartlomieju): this if/else is duplicated at the end of the body of this function.
// However it's not really feasible to deduplicate it as the `client_config` instances
// are not type-compatible - one wants "client cert", the other wants "transparency policy
// or client cert".
let client =
if let Some((cert_chain, private_key)) = maybe_cert_chain_and_key {
client_config
.with_single_cert(cert_chain, private_key)
.expect("invalid client key or certificate")
} else {
client_config.with_no_client_auth()
};
return Ok(client);
}
let client_config = ClientConfig::builder()
.with_safe_defaults()
.with_root_certificates({
let mut root_cert_store =
root_cert_store.unwrap_or_else(create_default_root_cert_store);
// If custom certs are specified, add them to the store
for cert in ca_certs {
let reader = &mut BufReader::new(Cursor::new(cert));
// This function does not return specific errors, if it fails give a generic message.
match rustls_pemfile::certs(reader) {
Ok(certs) => {
root_cert_store.add_parsable_certificates(&certs);
}
Err(e) => {
return Err(anyhow!(
"Unable to add pem file to certificate store: {}",
e
));
}
}
}
root_cert_store
});
let client = if let Some((cert_chain, private_key)) = maybe_cert_chain_and_key
{
client_config
.with_single_cert(cert_chain, private_key)
.expect("invalid client key or certificate")
} else {
client_config.with_no_client_auth()
};
Ok(client)
}
pub fn load_certs(
reader: &mut dyn BufRead,
) -> Result<Vec<Certificate>, AnyError> {
let certs = certs(reader)
.map_err(|_| custom_error("InvalidData", "Unable to decode certificate"))?;
if certs.is_empty() {
let e = custom_error("InvalidData", "No certificates found in cert file");
return Err(e);
}
Ok(certs.into_iter().map(Certificate).collect())
}
fn key_decode_err() -> AnyError {
custom_error("InvalidData", "Unable to decode key")
}
fn key_not_found_err() -> AnyError {
custom_error("InvalidData", "No keys found in key file")
}
/// Starts with -----BEGIN RSA PRIVATE KEY-----
fn load_rsa_keys(mut bytes: &[u8]) -> Result<Vec<PrivateKey>, AnyError> {
let keys = rsa_private_keys(&mut bytes).map_err(|_| key_decode_err())?;
Ok(keys.into_iter().map(PrivateKey).collect())
}
/// Starts with -----BEGIN PRIVATE KEY-----
fn load_pkcs8_keys(mut bytes: &[u8]) -> Result<Vec<PrivateKey>, AnyError> {
let keys = pkcs8_private_keys(&mut bytes).map_err(|_| key_decode_err())?;
Ok(keys.into_iter().map(PrivateKey).collect())
}
fn filter_invalid_encoding_err(
to_be_filtered: Result<HandshakeSignatureValid, Error>,
) -> Result<HandshakeSignatureValid, Error> {
match to_be_filtered {
Err(Error::InvalidCertificate(rustls::CertificateError::BadEncoding)) => {
Ok(HandshakeSignatureValid::assertion())
}
res => res,
}
}
pub fn load_private_keys(bytes: &[u8]) -> Result<Vec<PrivateKey>, AnyError> {
let mut keys = load_rsa_keys(bytes)?;
if keys.is_empty() {
keys = load_pkcs8_keys(bytes)?;
}
if keys.is_empty() {
return Err(key_not_found_err());
}
Ok(keys)
}