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engine: handle inbound KILL — forget users, reintroduce bots

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KILL was never parsed, so a killed user lingered in services' state (stale
session, session-limit slot, channel membership) and a killed services bot
vanished for good. The parser now surfaces UserKilled; a killed real user is
forgotten like a QUIT (shared forget_user helper), while a killed bot is
dropped and reconciled so it is reintroduced and rejoins its channels.
This commit is contained in:
Jean Chevronnet 2026-07-16 10:06:36 +00:00
parent a9a3408de0
commit 63ecd79b12
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4 changed files with 84 additions and 4 deletions
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44
src/engine/tests.rs
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@ -1860,6 +1860,50 @@
assert!(out.iter().any(|a| matches!(a, NetAction::ServiceJoin { uid, channel } if uid == &bot_uid && channel == "#c")), "kicked bot rejoins: {out:?}");
}
// A KILL forgets a real user, but a killed services bot is reintroduced and
// rejoins its channels — an oper can't take a bot down for good.
#[test]
fn kill_forgets_a_user_and_reintroduces_a_bot() {
use echo_botserv::BotServ;
use echo_nickserv::NickServ;
let path = std::env::temp_dir().join("echo-killbot.jsonl");
let _ = std::fs::remove_file(&path);
let mut db = Db::open(&path, "42S");
db.scram_iterations = 4096;
db.register("boss", "password1", None).unwrap();
db.register_channel("#c", "boss").unwrap();
let mut e = Engine::new(
vec![
Box::new(NickServ { uid: "42SAAAAAA".into(), guest_nick: "Guest".into(), guest_seq: 0 }),
Box::new(BotServ { uid: "42SAAAAAD".into() }),
],
db,
);
e.set_sid("42S".into());
let mut opers = std::collections::HashMap::new();
opers.insert("boss".to_string(), Privs::default().with(echo_api::Priv::Admin));
e.set_opers(opers);
let ns = |e: &mut Engine, t: &str| e.handle(NetEvent::Privmsg { from: "000AAAAAB".into(), to: "42SAAAAAA".into(), text: t.into() });
let bs = |e: &mut Engine, t: &str| e.handle(NetEvent::Privmsg { from: "000AAAAAB".into(), to: "42SAAAAAD".into(), text: t.into() });
e.handle(NetEvent::UserConnect { uid: "000AAAAAB".into(), nick: "boss".into(), host: "h".into() , ip: "0.0.0.0".into() });
ns(&mut e, "IDENTIFY password1");
bs(&mut e, "BOT ADD Bendy bot serv.host Helper");
let bot_uid = bs(&mut e, "ASSIGN #c Bendy").iter().find_map(|a| match a {
NetAction::ServiceJoin { uid, channel } if channel == "#c" => Some(uid.clone()),
_ => None,
}).expect("bot joined on assign");
// Killing a real user forgets their session.
assert_eq!(e.network.account_of("000AAAAAB"), Some("boss"), "identified before the kill");
e.handle(NetEvent::UserKilled { uid: "000AAAAAB".into() });
assert!(e.network.account_of("000AAAAAB").is_none(), "killed user forgotten");
// Killing the bot brings it right back and rejoins its channel.
let out = e.handle(NetEvent::UserKilled { uid: bot_uid });
assert!(out.iter().any(|a| matches!(a, NetAction::IntroduceUser { nick, .. } if nick == "Bendy")), "killed bot reintroduced: {out:?}");
assert!(out.iter().any(|a| matches!(a, NetAction::ServiceJoin { channel, .. } if channel == "#c")), "reintroduced bot rejoins #c: {out:?}");
}
// A channel that expires with an assigned bot parts the bot in the same
// sweep — it must not linger in a channel it no longer serves.
#[test]