111 lines
3.1 KiB
Rust
111 lines
3.1 KiB
Rust
use crate::base::err_utils::encpasulate_error;
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use bytes::BufMut;
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use clap::Parser;
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/// TCP relay client
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#[derive(Parser, Debug, Clone, Default)]
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#[clap(author, version, about, long_about = None)]
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pub struct ClientConfig {
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/// Access token
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#[clap(short, long)]
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pub token: Option<String>,
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/// Relay server
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#[clap(short, long, default_value = "http://127.0.0.1:8000")]
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pub relay_url: String,
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/// Listen address
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#[clap(short, long, default_value = "127.0.0.1")]
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pub listen_address: String,
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/// Alternative root certificate to use for server authentication
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#[clap(short = 'c', long)]
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pub root_certificate: Option<String>,
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/// TLS certificate for TLS authentication.
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#[clap(long)]
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pub tls_cert: Option<String>,
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/// TLS key for TLS authentication.
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#[clap(long)]
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pub tls_key: Option<String>,
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#[clap(skip)]
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pub _keys_cache: KeysCache,
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}
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#[derive(Parser, Debug, Clone, Default)]
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pub struct KeysCache {
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#[clap(skip)]
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_root_certificate_cache: Option<Vec<u8>>,
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#[clap(skip)]
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_tls_cert_cache: Option<Vec<u8>>,
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#[clap(skip)]
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_tls_key_cache: Option<Vec<u8>>,
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}
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impl ClientConfig {
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/// Load certificates and put them in cache
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pub fn load_certificates(&mut self) -> std::io::Result<()> {
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self._keys_cache = KeysCache {
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_root_certificate_cache: load_pem_file(&self.root_certificate, "root certificate")?,
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_tls_cert_cache: load_pem_file(&self.tls_cert, "client certificate")?,
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_tls_key_cache: load_pem_file(&self.tls_key, "client key")?,
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};
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Ok(())
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}
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/// Get client token, returning a dummy token if none was specified
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pub fn get_auth_token(&self) -> &str {
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self.token.as_deref().unwrap_or("none")
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}
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/// Get root certificate content
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pub fn get_root_certificate(&self) -> Option<Vec<u8>> {
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self._keys_cache._root_certificate_cache.clone()
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}
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/// Get client certificate & key pair, if available
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pub fn get_client_keypair(&self) -> Option<(&Vec<u8>, &Vec<u8>)> {
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if let (Some(cert), Some(key)) = (
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&self._keys_cache._tls_cert_cache,
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&self._keys_cache._tls_key_cache,
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) {
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Some((cert, key))
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} else {
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None
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}
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}
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/// Get client certificate & key pair, in a single memory buffer
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pub fn get_merged_client_keypair(&self) -> Option<Vec<u8>> {
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self.get_client_keypair().map(|(c, k)| {
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let mut out = k.to_vec();
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out.put_slice("\n".as_bytes());
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out.put_slice(c);
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out
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})
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}
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}
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fn load_pem_file(path: &Option<String>, name: &str) -> std::io::Result<Option<Vec<u8>>> {
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Ok(match path {
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None => None,
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Some(p) => Some(
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std::fs::read(p)
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.map_err(|e| encpasulate_error(e, format!("Failed to load {}!", name)))?,
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),
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})
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}
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#[cfg(test)]
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mod test {
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use crate::tcp_relay_client::client_config::ClientConfig;
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#[test]
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fn verify_cli() {
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use clap::CommandFactory;
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ClientConfig::command().debug_assert()
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}
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}
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