diff options
Diffstat (limited to 'tvix/nix-compat')
| -rw-r--r-- | tvix/nix-compat/src/nix_daemon/worker_protocol.rs | 71 |
1 files changed, 63 insertions, 8 deletions
diff --git a/tvix/nix-compat/src/nix_daemon/worker_protocol.rs b/tvix/nix-compat/src/nix_daemon/worker_protocol.rs index 7e3adc0db2ff..cc99bdb54fab 100644 --- a/tvix/nix-compat/src/nix_daemon/worker_protocol.rs +++ b/tvix/nix-compat/src/nix_daemon/worker_protocol.rs @@ -1,4 +1,5 @@ use std::{ + cmp::min, collections::HashMap, io::{Error, ErrorKind}, }; @@ -209,7 +210,7 @@ pub async fn read_client_settings<R: AsyncReadExt + Unpin>( /// /// # Return /// -/// The protocol version of the client. +/// The protocol version to use for further comms, min(client_version, our_version). pub async fn server_handshake_client<'a, RW: 'a>( mut conn: &'a mut RW, nix_version: &str, @@ -239,28 +240,29 @@ where format!("The nix client version {} is too old", client_version), )); } - if client_version.minor() >= 14 { + let picked_version = min(PROTOCOL_VERSION, client_version); + if picked_version.minor() >= 14 { // Obsolete CPU affinity. let read_affinity = conn.read_u64_le().await?; if read_affinity != 0 { let _cpu_affinity = conn.read_u64_le().await?; }; } - if client_version.minor() >= 11 { + if picked_version.minor() >= 11 { // Obsolete reserveSpace let _reserve_space = conn.read_u64_le().await?; } - if client_version.minor() >= 33 { + if picked_version.minor() >= 33 { // Nix version. We're plain lying, we're not Nix, but eh… // Setting it to the 2.3 lineage. Not 100% sure this is a // good idea. wire::write_bytes(&mut conn, nix_version).await?; conn.flush().await?; } - if client_version.minor() >= 35 { + if picked_version.minor() >= 35 { write_worker_trust_level(&mut conn, trusted).await?; } - Ok(client_version) + Ok(picked_version) } } @@ -330,11 +332,64 @@ mod tests { // Trusted (1 == client trusted .write(&[1, 0, 0, 0, 0, 0, 0, 0]) .build(); - let client_version = server_handshake_client(&mut test_conn, "2.18.2", Trust::Trusted) + let picked_version = server_handshake_client(&mut test_conn, "2.18.2", Trust::Trusted) .await .unwrap(); - assert_eq!(client_version, PROTOCOL_VERSION) + assert_eq!(picked_version, PROTOCOL_VERSION) + } + + #[tokio::test] + async fn test_init_hanshake_with_newer_client_should_use_older_version() { + let mut test_conn = tokio_test::io::Builder::new() + .read(&WORKER_MAGIC_1.to_le_bytes()) + .write(&WORKER_MAGIC_2.to_le_bytes()) + .write(&[37, 1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]) + // Client is newer than us. + .read(&[38, 1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]) + // cpu affinity + .read(&[0; 8]) + // reservespace + .read(&[0; 8]) + // version (size) + .write(&[0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]) + // version (data == 2.18.2 + padding) + .write(&[50, 46, 49, 56, 46, 50, 0, 0]) + // Trusted (1 == client trusted + .write(&[1, 0, 0, 0, 0, 0, 0, 0]) + .build(); + let picked_version = server_handshake_client(&mut test_conn, "2.18.2", Trust::Trusted) + .await + .unwrap(); + + assert_eq!(picked_version, PROTOCOL_VERSION) + } + + #[tokio::test] + async fn test_init_hanshake_with_older_client_should_use_older_version() { + let mut test_conn = tokio_test::io::Builder::new() + .read(&WORKER_MAGIC_1.to_le_bytes()) + .write(&WORKER_MAGIC_2.to_le_bytes()) + .write(&[37, 1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]) + // Client is newer than us. + .read(&[24, 1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]) + // cpu affinity + .read(&[0; 8]) + // reservespace + .read(&[0; 8]) + // NOTE: we are not writing version and trust since the client is too old. + // version (size) + //.write(&[0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]) + // version (data == 2.18.2 + padding) + //.write(&[50, 46, 49, 56, 46, 50, 0, 0]) + // Trusted (1 == client trusted + //.write(&[1, 0, 0, 0, 0, 0, 0, 0]) + .build(); + let picked_version = server_handshake_client(&mut test_conn, "2.18.2", Trust::Trusted) + .await + .unwrap(); + + assert_eq!(picked_version, ProtocolVersion::from_parts(1, 24)) } #[tokio::test] |