158 lines
3.9 KiB
Rust
158 lines
3.9 KiB
Rust
use std::{
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io::{Read, Write},
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net::TcpStream,
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sync::Arc,
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};
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use anyhow::{Context, Result};
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// use native_tls::TlsConnector;
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// use native_tls::TlsConnector;
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use rustls::{
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client::{ServerCertVerified, ServerCertVerifier},
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ClientConfig, ClientConnection, KeyLogFile, OwnedTrustAnchor, RootCertStore, StreamOwned,
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};
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use trust_dns_resolver::{
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config::{ResolverConfig, ResolverOpts},
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Resolver,
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};
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use uuid::Uuid;
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fn main() -> Result<()> {
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let (port, host) = resolve_dns("daeken.dev")?;
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let port = 12345;
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let host = "localhost";
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dbg!(&port);
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dbg!(&host);
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let tls_conf = Arc::new(make_tls_config());
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let mut tls_conn = make_tls_connection(tls_conf, &host, port)
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.with_context(|| format!("Can't connect to {}:{}", host, port))?;
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let uuid = Uuid::new_v4();
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dbg!(&uuid);
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tls_conn
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.write_all(uuid.as_bytes())
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.context("Can't write UUID")?;
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let mut serv_uuid = [0; 16];
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tls_conn.read_exact(&mut serv_uuid)?;
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let serv_uuid = Uuid::from_bytes(serv_uuid);
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dbg!(serv_uuid);
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// Hangs ATM
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let mut new = [0; 100];
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tls_conn.write_all(&new)?;
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let len = tls_conn.read(&mut new)?;
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dbg!(&new[..len]);
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Ok(())
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}
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// TODO: How to cache this?
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fn resolve_dns(server: &str) -> Result<(u16, String)> {
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let name = format!("_hypercosm._tls.{}", server);
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let resp = make_dns_client()?
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.srv_lookup(name)?
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.into_iter()
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.collect::<Vec<_>>();
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// TODO: Ensure exactly 1 result: I think.
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let srv = &resp[0];
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// TODO: Handle priority and weight.
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let port = srv.port();
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// TODO: Should this be ascii or utf8
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let name = srv.target().to_ascii();
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Ok((port, name))
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}
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fn make_dns_client() -> Result<Resolver> {
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Ok(Resolver::new(
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ResolverConfig::cloudflare_tls(),
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ResolverOpts::default(),
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)?)
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}
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fn make_tls_config() -> ClientConfig {
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let mut root_store = RootCertStore::empty();
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root_store.add_server_trust_anchors(webpki_roots::TLS_SERVER_ROOTS.0.iter().map(|ta| {
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OwnedTrustAnchor::from_subject_spki_name_constraints(
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ta.subject,
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ta.spki,
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ta.name_constraints,
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)
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}));
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// let cert_dir = include_bytes!("../cert.der");
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// assert_eq!(
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// root_store.add_parsable_certificates(&[cert_dir.to_vec()]),
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// (1, 0)
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// );
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let mut config = rustls::ClientConfig::builder()
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.with_safe_defaults()
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.with_root_certificates(root_store)
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.with_no_client_auth();
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struct DontValidate;
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impl ServerCertVerifier for DontValidate {
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fn verify_server_cert(
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&self,
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_: &rustls::Certificate,
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_: &[rustls::Certificate],
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_: &rustls::ServerName,
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_: &mut dyn Iterator<Item = &[u8]>,
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_: &[u8],
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_: std::time::SystemTime,
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) -> Result<rustls::client::ServerCertVerified, rustls::Error> {
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Ok(ServerCertVerified::assertion())
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}
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}
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config
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.dangerous()
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.set_certificate_verifier(Arc::new(DontValidate));
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config.key_log = Arc::new(KeyLogFile::new());
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config
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}
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fn make_tls_connection(
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config: Arc<ClientConfig>,
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server: &str,
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port: u16,
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) -> Result<impl Read + Write> {
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let server_name = server
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.try_into()
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.with_context(|| format!("Invalid server name: `{}`", server))?;
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let conn = ClientConnection::new(config, server_name)?;
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let sock = TcpStream::connect((server, port))?;
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let stream = StreamOwned::new(conn, sock);
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Ok(stream)
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}
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// fn make_tls_connection(
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// config: Arc<ClientConfig>,
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// server: &str,
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// port: u16,
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// ) -> Result<impl Read + Write> {
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// let connector = TlsConnector::builder()
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// .danger_accept_invalid_certs(true)
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// .build()?;
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// let sock = TcpStream::connect((server, port))?;
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// let conn = connector.connect(server, sock)?;
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// Ok(conn)
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// }
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