// Only read the answers (skip authorities and additional) as that's all we care about.
let mut rrsig_opt = None;
for _ in 0..answers {
- let rr = emap(parse_wire_packet_rr(&mut read, &resp))?;
- write_rr(&rr, 0, proof);
+ let (rr, ttl) = emap(parse_wire_packet_rr(&mut read, &resp))?;
+ write_rr(&rr, ttl, proof);
if let RR::RRSig(rrsig) = rr { rrsig_opt = Some(rrsig); }
}
Ok(rrsig_opt)
handle_response(&resp, proof)
}
-fn build_proof(resolver: SocketAddr, domain: Name, ty: u16) -> Result<Vec<u8>, Error> {
- let mut stream = TcpStream::connect(resolver)?;
- let mut res = Vec::new();
- send_query(&mut stream, domain, ty)?;
- let mut reached_root = false;
- for _ in 0..10 {
- let rrsig_opt = read_response(&mut stream, &mut res)?;
- if let Some(rrsig) = rrsig_opt {
- if rrsig.name.as_str() == "." {
- reached_root = true;
- } else {
- if rrsig.name == rrsig.key_name {
- send_query(&mut stream, rrsig.key_name, DS::TYPE)?;
+macro_rules! build_proof_impl {
+ ($stream: ident, $send_query: ident, $read_response: ident $(, $async_ok: tt)?) => { {
+ let mut res = Vec::new();
+ let mut reached_root = false;
+ for i in 0..10 {
+ let rrsig_opt = $read_response(&mut $stream, &mut res)
+ $(.await?; $async_ok)??; // Either await?; Ok(())?, or just ?
+ if let Some(rrsig) = rrsig_opt {
+ if rrsig.name.as_str() == "." {
+ reached_root = true;
} else {
- send_query(&mut stream, rrsig.key_name, DnsKey::TYPE)?;
+ if i != 0 && rrsig.name == rrsig.key_name {
+ $send_query(&mut $stream, rrsig.key_name, DS::TYPE)
+ } else {
+ $send_query(&mut $stream, rrsig.key_name, DnsKey::TYPE)
+ }$(.await?; $async_ok)??; // Either await?; Ok(())?, or just ?
}
}
+ if reached_root { break; }
}
- if reached_root { break; }
- }
- if !reached_root { Err(Error::new(ErrorKind::Other, "Too many requests required")) }
- else { Ok(res) }
+ if !reached_root { Err(Error::new(ErrorKind::Other, "Too many requests required")) }
+ else { Ok(res) }
+ } }
+}
+
+fn build_proof(resolver: SocketAddr, domain: Name, ty: u16) -> Result<Vec<u8>, Error> {
+ let mut stream = TcpStream::connect(resolver)?;
+ send_query(&mut stream, domain, ty)?;
+ build_proof_impl!(stream, send_query, read_response)
}
#[cfg(feature = "tokio")]
async fn build_proof_async(resolver: SocketAddr, domain: Name, ty: u16) -> Result<Vec<u8>, Error> {
let mut stream = TokioTcpStream::connect(resolver).await?;
- let mut res = Vec::new();
send_query_async(&mut stream, domain, ty).await?;
- let mut reached_root = false;
- for _ in 0..10 {
- let rrsig_opt = read_response_async(&mut stream, &mut res).await?;
- if let Some(rrsig) = rrsig_opt {
- if rrsig.name.as_str() == "." {
- reached_root = true;
- } else {
- if rrsig.name == rrsig.key_name {
- send_query_async(&mut stream, rrsig.key_name, DS::TYPE).await?;
- } else {
- send_query_async(&mut stream, rrsig.key_name, DnsKey::TYPE).await?;
- }
- }
- }
- if reached_root { break; }
- }
-
- if !reached_root { Err(Error::new(ErrorKind::Other, "Too many requests required")) }
- else { Ok(res) }
+ build_proof_impl!(stream, send_query_async, read_response_async, { Ok::<(), Error>(()) })
}
/// Builds a DNSSEC proof for an A record by querying a recursive resolver
use std::net::ToSocketAddrs;
use std::time::SystemTime;
+
+ #[test]
+ fn test_cloudflare_txt_query() {
+ let sockaddr = "8.8.8.8:53".to_socket_addrs().unwrap().next().unwrap();
+ let query_name = "cloudflare.com.".try_into().unwrap();
+ let proof = build_txt_proof(sockaddr, query_name).unwrap();
+
+ let mut rrs = parse_rr_stream(&proof).unwrap();
+ rrs.shuffle(&mut rand::rngs::OsRng);
+ let verified_rrs = verify_rr_stream(&rrs).unwrap();
+ assert!(verified_rrs.verified_rrs.len() > 1);
+
+ let now = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs();
+ assert!(verified_rrs.valid_from < now);
+ assert!(verified_rrs.expires > now);
+ }
+
#[test]
fn test_txt_query() {
let sockaddr = "8.8.8.8:53".to_socket_addrs().unwrap().next().unwrap();