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fix: ACK so greetd doesn't wait forever on systems with fingerprint scanner

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Also show info messages from PAM mainly "Place your finger on the
fingerprint reader"
This commit is contained in:
Hojjat 2025-12-18 17:59:55 -07:00 • committed by Michael Murphy
parent 4acdc099f4
commit f3e9de2425
1 changed files with 13 additions and 3 deletions
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16
src/greeter.rs
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@ -898,9 +898,10 @@ impl App {
}
}
None => {
column = column.push(
widget::button::custom("Confirm").on_press(Message::Auth(None)),
);
// `value_opt == None` is used for non-interactive auth messages
// (e.g. PAM_TEXT_INFO via greetd). This is where fingerprint
// prompts typically come through, so show the message to the user.
column = column.push(widget::text(prompt));
}
}
}
@ -1193,6 +1194,15 @@ impl cosmic::Application for App {
fn update(&mut self, message: Self::Message) -> Task<Message> {
match message {
Message::Common(common_message) => {
// In greetd's IPC protocol, the greeter must acknowledge auth messages by
// sending PostAuthMessageResponse. For non-interactive "info" messages
// (fingerprint prompts typically come through here), the correct response
// is `None`. If we don't ACK, greetd will wait forever and the UI will
// appear "stuck" on the last info message.
if let common::Message::Prompt(_, _secret, None) = &common_message {
self.send_request(Request::PostAuthMessageResponse { response: None });
}
return self.common.update(common_message);
}
Message::OutputEvent(output_event, output) => {