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Expose methods to configure TLS connection
- Add `Config::native_tls_connector` and `Config::rustls_client_config` - Remove the requirement of having `native-tls` or `rustls-tls` enabled when `client` is enabled. Allow one, both or none. - When both, the default Service will use `native-tls` because of kube-rs#153. `rustls` can be still used with a custom client. Users will have an option to configure TLS at runtime. - When none, HTTP connector is used. - Note that `oauth` feature still requires tls feature. - Remove tls features from kube-runtime
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,164 @@ | ||
| use crate::Result; | ||
|
|
||
| use super::Config; | ||
|
|
||
| impl Config { | ||
| /// Create `native_tls::TlsConnector` | ||
| #[cfg(feature = "native-tls")] | ||
| pub fn native_tls_connector(&self) -> Result<tokio_native_tls::native_tls::TlsConnector> { | ||
| self::native_tls::native_tls_connector( | ||
| self.identity_pem.as_ref(), | ||
| self.root_cert.as_ref(), | ||
| self.accept_invalid_certs, | ||
| ) | ||
| } | ||
|
|
||
| /// Create `rustls::ClientConfig` | ||
| #[cfg(feature = "rustls-tls")] | ||
| pub fn rustls_tls_client_config(&self) -> Result<rustls::ClientConfig> { | ||
| self::rustls_tls::rustls_client_config( | ||
| self.identity_pem.as_ref(), | ||
| self.root_cert.as_ref(), | ||
| self.accept_invalid_certs, | ||
| ) | ||
| } | ||
| } | ||
|
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||
|
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| #[cfg(feature = "native-tls")] | ||
| mod native_tls { | ||
| use tokio_native_tls::native_tls::{Certificate, Identity, TlsConnector}; | ||
|
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| use crate::{Error, Result}; | ||
|
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| const IDENTITY_PASSWORD: &str = " "; | ||
|
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| /// Create `native_tls::TlsConnector`. | ||
| pub fn native_tls_connector( | ||
| identity_pem: Option<&Vec<u8>>, | ||
| root_cert: Option<&Vec<Vec<u8>>>, | ||
| accept_invalid: bool, | ||
| ) -> Result<TlsConnector> { | ||
| let mut builder = TlsConnector::builder(); | ||
| if let Some(pem) = identity_pem { | ||
| let identity = pkcs12_from_pem(pem, IDENTITY_PASSWORD)?; | ||
| builder.identity( | ||
| Identity::from_pkcs12(&identity, IDENTITY_PASSWORD) | ||
| .map_err(|e| Error::SslError(format!("{}", e)))?, | ||
| ); | ||
| } | ||
|
|
||
| if let Some(ders) = root_cert { | ||
| for der in ders { | ||
| builder.add_root_certificate( | ||
| Certificate::from_der(&der).map_err(|e| Error::SslError(format!("{}", e)))?, | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| if accept_invalid { | ||
| builder.danger_accept_invalid_certs(true); | ||
| } | ||
|
|
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| let connector = builder.build().map_err(|e| Error::SslError(format!("{}", e)))?; | ||
| Ok(connector) | ||
| } | ||
|
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| // TODO Replace this with pure Rust implementation to avoid depending on openssl on macOS and Win | ||
| fn pkcs12_from_pem(pem: &[u8], password: &str) -> Result<Vec<u8>> { | ||
| use openssl::{pkcs12::Pkcs12, pkey::PKey, x509::X509}; | ||
| let x509 = X509::from_pem(&pem)?; | ||
| let pkey = PKey::private_key_from_pem(&pem)?; | ||
| let p12 = Pkcs12::builder().build(password, "kubeconfig", &pkey, &x509)?; | ||
| let der = p12.to_der()?; | ||
| Ok(der) | ||
| } | ||
| } | ||
|
|
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| #[cfg(feature = "rustls-tls")] | ||
| mod rustls_tls { | ||
| use std::sync::Arc; | ||
|
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| use tokio_rustls::{ | ||
| rustls::{self, Certificate, ClientConfig, ServerCertVerified, ServerCertVerifier}, | ||
| webpki::DNSNameRef, | ||
| }; | ||
|
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| use crate::{Error, Result}; | ||
|
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| /// Create `rustls::ClientConfig`. | ||
| pub fn rustls_client_config( | ||
| identity_pem: Option<&Vec<u8>>, | ||
| root_cert: Option<&Vec<Vec<u8>>>, | ||
| accept_invalid: bool, | ||
| ) -> Result<ClientConfig> { | ||
| use rustls::internal::pemfile; | ||
| use std::io::Cursor; | ||
|
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| // Based on code from `reqwest` | ||
| let mut client_config = ClientConfig::new(); | ||
| if let Some(buf) = identity_pem { | ||
| let (key, certs) = { | ||
| let mut pem = Cursor::new(buf); | ||
| let certs = pemfile::certs(&mut pem) | ||
| .map_err(|_| Error::SslError("No valid certificate was found".into()))?; | ||
| pem.set_position(0); | ||
|
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| let mut sk = pemfile::pkcs8_private_keys(&mut pem) | ||
| .and_then(|pkcs8_keys| { | ||
| if pkcs8_keys.is_empty() { | ||
| Err(()) | ||
| } else { | ||
| Ok(pkcs8_keys) | ||
| } | ||
| }) | ||
| .or_else(|_| { | ||
| pem.set_position(0); | ||
| pemfile::rsa_private_keys(&mut pem) | ||
| }) | ||
| .map_err(|_| Error::SslError("No valid private key was found".into()))?; | ||
|
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| if let (Some(sk), false) = (sk.pop(), certs.is_empty()) { | ||
| (sk, certs) | ||
| } else { | ||
| return Err(Error::SslError("private key or certificate not found".into())); | ||
| } | ||
| }; | ||
|
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| client_config | ||
| .set_single_client_cert(certs, key) | ||
| .map_err(|e| Error::SslError(format!("{}", e)))?; | ||
| } | ||
|
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| if let Some(ders) = root_cert { | ||
| for der in ders { | ||
| client_config | ||
| .root_store | ||
| .add(&Certificate(der.to_owned())) | ||
| .map_err(|e| Error::SslError(format!("{}", e)))?; | ||
| } | ||
| } | ||
|
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| if accept_invalid { | ||
| client_config | ||
| .dangerous() | ||
| .set_certificate_verifier(Arc::new(NoCertificateVerification {})); | ||
| } | ||
|
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| Ok(client_config) | ||
| } | ||
|
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| struct NoCertificateVerification {} | ||
|
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| impl ServerCertVerifier for NoCertificateVerification { | ||
| fn verify_server_cert( | ||
| &self, | ||
| _roots: &rustls::RootCertStore, | ||
| _presented_certs: &[rustls::Certificate], | ||
| _dns_name: DNSNameRef<'_>, | ||
| _ocsp: &[u8], | ||
| ) -> Result<ServerCertVerified, rustls::TLSError> { | ||
| Ok(ServerCertVerified::assertion()) | ||
| } | ||
| } | ||
| } |
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