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dbus: simplify auth function

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This commit is contained in:
Julian Orth 2026-01-18 16:01:33 +01:00
parent 3d7dc1161f
commit d84d4edd90
2 changed files with 21 additions and 25 deletions
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45
src/dbus/auth.rs
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@ -52,38 +52,33 @@ impl Auth {
}
async fn handle_auth(&mut self) -> Result<(), DbusError> {
let mut out_buf = Buf::new(128);
{
let buf = out_buf
.write_fmt(format_args!("\0AUTH EXTERNAL\r\nDATA\r\n"))
.unwrap();
self.write_buf(buf).await?;
// dbus-broker hard codes this initial burst of messages
const AUTH: &str = "\
\0\
AUTH EXTERNAL\r\n\
DATA\r\n\
NEGOTIATE_UNIX_FD\r\n\
BEGIN\r\n\
";
let out_buf = Buf::from_slice(AUTH.as_bytes());
self.write_buf(out_buf).await?;
let mut line;
macro_rules! read_cmd {
() => {{
line = self.readline().await?;
let (cmd, _) = line_to_cmd(&line);
cmd
}};
}
let line = self.readline().await?;
let (cmd, _) = line_to_cmd(&line);
if cmd != "DATA" {
if read_cmd!() != "DATA" {
return Err(DbusError::NoChallenge);
}
let line = self.readline().await?;
let (cmd, _) = line_to_cmd(&line);
if cmd != "OK" {
if read_cmd!() != "OK" {
return Err(DbusError::Auth);
}
{
let buf = out_buf
.write_fmt(format_args!("NEGOTIATE_UNIX_FD\r\n"))
.unwrap();
self.write_buf(buf).await?;
}
let line = self.readline().await?;
let (cmd, _) = line_to_cmd(&line);
if cmd != "AGREE_UNIX_FD" {
if read_cmd!() != "AGREE_UNIX_FD" {
return Err(DbusError::UnixFd);
}
{
let buf = out_buf.write_fmt(format_args!("BEGIN\r\n")).unwrap();
self.write_buf(buf).await?;
}
Ok(())
}