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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| use std::sync::Arc; | ||
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| use std::net::TcpStream; | ||
| use std::io::{Read, Write, stdout}; | ||
| use std::iter::FromIterator; | ||
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| use rustls; | ||
| use webpki; | ||
| use webpki_roots; | ||
| use rustls::Session; | ||
| use base64::decode; | ||
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| extern crate trust_dns_resolver; | ||
| use trust_dns_resolver::config::*; | ||
| use trust_dns_resolver::Resolver; | ||
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| fn main() { | ||
| let domain = "canbe.esni.defo.ie"; | ||
| println!("\nContacting {:?} over ESNI\n", domain); | ||
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| let dns_config = ResolverConfig::cloudflare_https(); | ||
| let opts = ResolverOpts::default(); | ||
| let addr = Address::new(domain); | ||
| let esni_bytes = resolve_esni(dns_config, opts, &addr); | ||
| let esni_hs = rustls::esni::create_esni_handshake(&esni_bytes).unwrap(); | ||
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| let mut config = rustls::esni::create_esni_config(); | ||
| config.root_store.add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS); | ||
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| let dns_name = webpki::DNSNameRef::try_from_ascii_str(domain).unwrap(); | ||
| let mut sess = rustls::ClientSession::new_with_esni(&Arc::new(config), dns_name, esni_hs); | ||
| let mut sock = TcpStream::connect(domain.to_owned() + ":8443").unwrap(); | ||
| let mut tls = rustls::Stream::new(&mut sess, &mut sock); | ||
| let host_header = format!("Host: {}\r\n", domain); | ||
| let mut headers = String::new(); | ||
| headers.push_str("GET / HTTP/1.1\r\n"); | ||
| headers.push_str(host_header.as_str()); | ||
| headers.push_str("Connection: close\r\n"); | ||
| headers.push_str("Accept-Encoding: identity\r\n"); | ||
| headers.push_str("\r\n"); | ||
| match tls.write(headers.as_bytes()) { | ||
| Ok(size) => { | ||
| println!("Received: {} bytes", size); | ||
| } , | ||
| Err(e) => { | ||
| println!("Error: {:?}", e); | ||
| return; | ||
| } | ||
| } | ||
| let ciphersuite = tls.sess.get_negotiated_ciphersuite().unwrap(); | ||
| writeln!(&mut std::io::stderr(), "\n\nNegotiated ciphersuite: {:?}", ciphersuite.suite).unwrap(); | ||
| let mut plaintext = Vec::new(); | ||
| match tls.read_to_end(&mut plaintext) { | ||
| Ok(success) => { | ||
| println!("read bytes: {}", success); | ||
| }, | ||
| Err(e) => { | ||
| stdout().write_all(&plaintext).unwrap(); | ||
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| println!("failure to read the bytes: {:?}", e); | ||
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| return; | ||
| } | ||
| } | ||
| stdout().write_all(&plaintext).unwrap(); | ||
| } | ||
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| pub fn resolve_esni(config: ResolverConfig, opts: ResolverOpts, address: &Address) -> Vec<u8> { | ||
| let resolver = Resolver::new(config, opts).unwrap(); | ||
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| let txt = resolver.txt_lookup(&address.esni_address()).unwrap(); | ||
| let text = Vec::from_iter(txt.iter()); | ||
| let mut bytes: Vec<u8> = Vec::new(); | ||
| for txt_record in text.iter() { | ||
| for byte_slice in txt_record.txt_data().iter() { | ||
| for byte in byte_slice.iter() { | ||
| bytes.push(*byte); | ||
| } | ||
| } | ||
| } | ||
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| decode(&bytes).unwrap() | ||
| } | ||
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| pub struct Address { | ||
| domain: String | ||
| } | ||
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| impl Address { | ||
| pub fn new(domain: &str) -> Address { | ||
| Address { | ||
| domain: String::from(domain) | ||
| } | ||
| } | ||
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| pub fn esni_address(&self) -> String { | ||
| format!("_esni.{}.", self.domain) | ||
| } | ||
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| pub fn dns_address(&self) -> String { | ||
| format!("{}.", self.domain) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -251,7 +251,6 @@ impl Iv { | |
| Self(value) | ||
| } | ||
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| #[cfg(test)] | ||
| pub(crate) fn value(&self) -> &[u8; 12] { &self.0 } | ||
| } | ||
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