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use anyhow::Context;
use anyhow::Result;
use codex_uds::UnixStream;
use tokio::io::AsyncReadExt;
use tokio::io::AsyncWriteExt;
use tokio::time::Duration;
use tokio::time::sleep;
use tokio::time::timeout;
use super::InstallerHttp;
use super::Signal;
use super::UpdateLoopControl;
use super::UpdateTrigger;
use super::selected_release;
use super::update_once;
use crate::Daemon;
use crate::RestartIfRunningOutcome;
use crate::UpdateOutput;
use crate::UpdateStatus;
use crate::client;
use crate::managed_install::executable_identity;
use crate::managed_install::managed_codex_version;
pub(crate) async fn request(daemon: &Daemon) -> Result<UpdateOutput> {
let socket_path = daemon.manual_update_socket_path();
let mut replacement_deadline = None;
'request: loop {
let mut connection = if let Some(deadline) = replacement_deadline {
loop {
if let Ok(connection) = UnixStream::connect(&socket_path).await {
break connection;
}
// A one-shot updater may exit after accepting the connection but
// before reading our request. Give a successor time to appear,
// then return to the normal startup path if none owns the PID.
if tokio::time::Instant::now() + Duration::from_secs(29) >= deadline {
let settings = daemon.load_settings().await?;
if !crate::backend::pid_update_loop_backend(daemon.backend_paths(&settings))
.is_starting_or_running()
.await?
{
replacement_deadline = None;
continue 'request;
}
}
anyhow::ensure!(
tokio::time::Instant::now() < deadline,
"timed out waiting for the replacement daemon updater"
);
sleep(Duration::from_millis(50)).await;
}
} else {
match UnixStream::connect(&socket_path).await {
Ok(connection) => connection,
Err(_) => {
let _operation_lock = daemon.acquire_operation_lock().await?;
if let Ok(connection) = UnixStream::connect(&socket_path).await {
connection
} else {
let settings = daemon.load_settings().await?;
if !supported(daemon)?
|| (daemon.running_backend_instance(&settings).await?.is_none()
&& client::probe(&daemon.socket_path).await.is_ok())
{
return unsupported(daemon).await;
}
crate::backend::pid_update_loop_backend(daemon.backend_paths(&settings))
.stop()
.await?;
let current_exe = std::env::current_exe()?;
let paths = daemon.backend_paths_with_bin(&settings, ¤t_exe);
let restore_release = if daemon.is_stable_standalone_release()? {
None
} else {
Some(selected_release(daemon)?.2)
};
let worker = crate::backend::PidBackend::new_update_loop(
paths.codex_bin,
paths.update_pid_file,
restore_release,
);
worker.start().await?;
let deadline = tokio::time::Instant::now() + Duration::from_secs(30);
loop {
if let Ok(connection) = UnixStream::connect(&socket_path).await {
break connection;
}
anyhow::ensure!(
tokio::time::Instant::now() < deadline,
"timed out waiting for the daemon updater to accept a manual request"
);
sleep(Duration::from_millis(50)).await;
}
}
}
}
};
let mut response = Vec::new();
let transport = async {
#[cfg(windows)]
connection.ensure_non_elevated_peer()?;
connection.write_all(b"update\n").await?;
connection
.take(16 * 1024)
.read_to_end(&mut response)
.await?;
Ok::<_, std::io::Error>(())
}
.await;
if response.is_empty() {
if transport
.as_ref()
.is_err_and(|err| err.kind() == std::io::ErrorKind::PermissionDenied)
{
transport?;
}
let deadline = replacement_deadline
.get_or_insert_with(|| tokio::time::Instant::now() + Duration::from_secs(30));
anyhow::ensure!(
tokio::time::Instant::now() < *deadline,
"daemon updater disconnected before responding"
);
sleep(Duration::from_millis(50)).await;
continue;
}
transport?;
let outcome: std::result::Result<UpdateOutput, String> =
serde_json::from_slice(&response).context("invalid response from daemon updater")?;
let outcome = outcome.map_err(anyhow::Error::msg)?;
if outcome.status == UpdateStatus::Unsupported && supported(daemon)? {
// A scheduled or older updater cannot authorize restoring a pin.
// Replace it under the writable operation lock, even with identical bytes.
let _operation_lock = daemon.acquire_operation_lock().await?;
let settings = daemon.load_settings().await?;
let worker = crate::backend::pid_update_loop_backend(daemon.backend_paths(&settings));
if !daemon.is_stable_standalone_release()? {
worker.stop().await?;
continue 'request;
}
}
return Ok(outcome);
}
}
pub(super) fn supported(daemon: &Daemon) -> Result<bool> {
if daemon.is_stable_standalone_release()? {
return Ok(true);
}
let Ok((root, release, _)) = selected_release(daemon) else {
return Ok(false);
};
let bin = daemon.current_managed_codex_bin()?;
Ok(std::fs::canonicalize(root.join("releases"))
.is_ok_and(|releases| release.parent() == Some(releases.as_path()))
&& bin.is_file()
&& std::fs::canonicalize(bin).is_ok_and(|bin| bin.starts_with(&release)))
}
const UNSUPPORTED_MESSAGE: &str =
"This command requires a daemon package selected from its managed releases directory.";
pub(super) async fn unsupported(daemon: &Daemon) -> Result<UpdateOutput> {
let managed_codex_path = daemon.current_managed_codex_bin()?;
Ok(UpdateOutput {
status: UpdateStatus::Unsupported,
installed_version: managed_codex_version(&managed_codex_path).await.ok(),
running_version: client::probe(&daemon.socket_path)
.await
.ok()
.map(|info| info.app_server_version),
managed_codex_path,
message: UNSUPPORTED_MESSAGE.to_string(),
})
}
pub(super) async fn handle_request(
mut connection: UnixStream,
http: &impl InstallerHttp,
daemon: &Daemon,
running_updater_identity: &crate::managed_install::ExecutableIdentity,
terminate: &mut Signal,
trigger: UpdateTrigger<'_>,
) -> Result<RequestDisposition> {
#[cfg(windows)]
if connection.ensure_non_elevated_peer().is_err() {
return Ok(RequestDisposition::Unchanged);
}
let mut request = [0; 7];
if !matches!(
timeout(Duration::from_secs(5), connection.read_exact(&mut request)).await,
Ok(Ok(_))
) || &request != b"update\n"
{
return Ok(RequestDisposition::Unchanged);
}
let result = run(http, daemon, running_updater_identity, terminate, trigger).await;
let interrupted = result.as_ref().err().is_some_and(|err| {
err.downcast_ref::<std::io::Error>()
.is_some_and(|err| err.kind() == std::io::ErrorKind::Interrupted)
});
let unsupported = result
.as_ref()
.is_ok_and(|output| output.status == UpdateStatus::Unsupported);
let outcome: std::result::Result<UpdateOutput, String> =
result.map_err(|err| format!("{err:#}"));
let sent = connection.write_all(&serde_json::to_vec(&outcome)?).await;
if interrupted {
return Ok(RequestDisposition::Stop);
}
sent?;
Ok(if unsupported {
RequestDisposition::Unchanged
} else {
RequestDisposition::Continue
})
}
pub(super) enum RequestDisposition {
Continue,
Unchanged,
Stop,
}
pub(super) async fn run(
http: &impl InstallerHttp,
daemon: &Daemon,
running_updater_identity: &crate::managed_install::ExecutableIdentity,
terminate: &mut Signal,
trigger: UpdateTrigger<'_>,
) -> Result<UpdateOutput> {
let settings = daemon.load_settings().await?;
let managed_running = daemon.running_backend_instance(&settings).await?.is_some();
if !(daemon.is_stable_standalone_release()?
|| matches!(trigger, UpdateTrigger::RestoreProduction(_)) && supported(daemon)?)
|| (!managed_running && client::probe(&daemon.socket_path).await.is_ok())
{
return unsupported(daemon).await;
}
let managed_codex_path = daemon.current_managed_codex_bin()?;
let (_, previous_release, _) = selected_release(daemon)?;
let previous_identity = executable_identity(&managed_codex_path).await?;
let (control, restart) =
update_once(http, daemon, running_updater_identity, terminate, trigger).await?;
if matches!(control, UpdateLoopControl::Stop) {
return Err(std::io::Error::from(std::io::ErrorKind::Interrupted).into());
}
let current_managed_codex_path = daemon.current_managed_codex_bin()?;
let installed_version = Some(managed_codex_version(¤t_managed_codex_path).await?);
let updated = previous_release != selected_release(daemon)?.1
|| previous_identity != executable_identity(¤t_managed_codex_path).await?;
let running_version = client::probe(&daemon.socket_path)
.await
.ok()
.map(|info| info.app_server_version);
let message = match restart {
Some(RestartIfRunningOutcome::Restarted) => {
"The managed installation is ready and the running daemon was restarted. Active or queued work may have been interrupted."
}
Some(RestartIfRunningOutcome::AlreadyCurrent) => {
"The managed installation and running daemon are already current; the daemon was left running."
}
Some(RestartIfRunningOutcome::NotRunning) => {
"The managed installation is ready; no daemon was running when the updater checked."
}
_ => unreachable!("successful manual update has a restart outcome"),
};
Ok(UpdateOutput {
status: if updated {
UpdateStatus::Updated
} else {
UpdateStatus::NoUpdate
},
managed_codex_path: current_managed_codex_path,
installed_version,
running_version,
message: message.to_string(),
})
}
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