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helpserv: HELP EXTBANS lists the network live extban set with a friendly example for each

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Jean Chevronnet 2026-07-17 22:23:54 +00:00
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82
modules/helpserv/src/extbans.rs Normal file
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@ -0,0 +1,82 @@
use echo_api::{Sender, ServiceCtx, Store};
// A friendly one-liner (with an example) for each extban, keyed by its ircd name.
// The letter and whether it's offered come live from the ircd's CAPAB set, so this
// only supplies the human description; names the ircd offers but we have no blurb
// for are still listed, just without the sentence.
const DESC: &[(&str, &str)] = &[
// Matching extbans — they match *who* a user is.
("account", "a logged-in account. e.g. +b account:baddie"),
("unauthed", "users NOT logged in whose mask matches. e.g. +b unauthed:*!*@*.example"),
("realname", "the real name (gecos). e.g. +b realname:*viagra*"),
("realmask", "host and real name together, joined by +. e.g. +b realmask:*!*@*.tor+*bot*"),
("server", "everyone on a server. e.g. +b server:leaf2.example.net"),
("fingerprint", "a TLS client-certificate fingerprint. e.g. +b fingerprint:<hash>"),
("channel", "users also in another channel. e.g. +b channel:#trolls"),
("banlist", "users banned in another channel. e.g. +b banlist:#other"),
("country", "users connecting from a country (GeoIP). e.g. +b country:RU"),
("asn", "users on a network operator, by AS number. e.g. +b asn:12345"),
("class", "users in a connect class. e.g. +b class:webchat"),
("gateway", "users behind a web gateway. e.g. +b gateway:kiwiirc"),
("bot", "users flagged as bots (+B). e.g. +b bot:*!*@*"),
("oper", "IRC operators. e.g. +b oper:*"),
("opertype", "a specific oper type. e.g. +b opertype:NetAdmin"),
("securitygroup", "members of a security group. e.g. +b securitygroup:trusted"),
("score", "users over a connection-score threshold. e.g. +b score:10"),
("team", "members of an account team. e.g. +b team:staff"),
("redirect", "ban and send them to another channel. e.g. +b redirect:#overflow:*!*@lots"),
// Acting extbans — they restrict *what* a user can do.
("mute", "can stay and read but not speak. e.g. +b mute:*!*@spam.host"),
("nonick", "cannot change nick in the channel. e.g. +b nonick:*!*@*"),
("noctcp", "cannot send CTCPs. e.g. +b noctcp:*!*@*"),
("nonotice", "cannot send channel notices. e.g. +b nonotice:*!*@*"),
("nokick", "cannot use KICK. e.g. +b nokick:*!*@*"),
("blockcolor", "colour/formatting in their messages is blocked. e.g. +b blockcolor:*!*@*"),
("stripcolor", "colour is stripped from their messages. e.g. +b stripcolor:*!*@*"),
("blockinvite", "cannot invite others. e.g. +b blockinvite:*!*@*"),
("opmoderated", "their messages reach only ops. e.g. +b opmoderated:*!*@*"),
];
// HELP EXTBANS: explain extended bans and list the ones this network actually
// offers, each with an example, split into matching (who) and acting (what).
pub fn handle(me: &str, from: &Sender, ctx: &mut ServiceCtx, db: &dyn Store) {
let say = |ctx: &mut ServiceCtx, s: String| ctx.notice(me, from.uid, s);
say(ctx, "Extended bans (\x02extbans\x02) match users by more than nick!user@host.".to_string());
say(ctx, "Use one where a ban mask goes: \x02/mode #chan +b <extban>\x02 (also +e/+I), or in \x02ChanServ AKICK\x02 (matching types only).".to_string());
say(ctx, "Write them by name or letter — \x02account:bad\x02 is the same as \x02R:bad\x02 — and prefix \x02!\x02 to invert (match everyone except).".to_string());
let mut offered = db.extbans();
offered.sort_by(|a, b| a.name.cmp(&b.name));
let (acting, matching): (Vec<_>, Vec<_>) = offered.into_iter().partition(|e| e.acting);
let line = |ctx: &mut ServiceCtx, e: &echo_api::ExtbanCap| {
let letter = e.letter.map_or_else(|| "-".to_string(), |c| c.to_string());
match DESC.iter().find(|(n, _)| n.eq_ignore_ascii_case(&e.name)) {
Some((_, desc)) => say(ctx, format!(" \x02{}\x02 (\x02{}\x02) — {}", e.name, letter, desc)),
None => say(ctx, format!(" \x02{}\x02 (\x02{}\x02)", e.name, letter)),
}
};
if matching.is_empty() && acting.is_empty() {
// We haven't learned the ircd's set yet — show the reference from DESC.
say(ctx, "\x02Extban types\x02 (your network's exact set is confirmed on link):".to_string());
for (name, desc) in DESC {
say(ctx, format!(" \x02{name}\x02 — {desc}"));
}
return;
}
if !matching.is_empty() {
say(ctx, "\x02Matching\x02 — match who a user is (work in AKICK and bans):".to_string());
for e in &matching {
line(ctx, e);
}
}
if !acting.is_empty() {
say(ctx, "\x02Acting\x02 — restrict what a user can do (bans only):".to_string());
for e in &acting {
line(ctx, e);
}
}
say(ctx, "ChanServ accepts only the extbans this network offers and hasn't disabled.".to_string());
}

22
modules/helpserv/src/lib.rs
View file

@ -23,6 +23,8 @@ mod take;
mod next;
#[path = "close.rs"]
mod close;
#[path = "extbans.rs"]
mod extbans;
const BLURB: &str = "HelpServ is the help desk and the network's help index. Open a ticket with \x02REQUEST\x02; operators work the queue.";
@ -65,16 +67,22 @@ impl Service for HelpServ {
Some("TAKE") | Some("ASSIGN") => take::handle(me, from, args.get(1).copied(), ctx, db),
Some("NEXT") => next::handle(me, from, ctx, db),
Some("CLOSE") | Some("RESOLVE") => close::handle(me, from, args.get(1).copied(), ctx, db),
// The extended-ban reference, listing this network's live extban set.
Some("EXTBANS") | Some("EXTBAN") => extbans::handle(me, from, ctx, db),
// HELP [service [command]]: bare HELP is HelpServ's own; HELP <service>
// [command] fronts any other service's help through the shared renderer.
Some("HELP") | None => match args.get(1).and_then(|&s| net.service_help(s)) {
Some((blurb, topics)) => echo_api::help(me, from, ctx, blurb, topics, args.get(2).copied()),
None => {
echo_api::help(me, from, ctx, BLURB, TOPICS, args.get(1).copied());
if args.get(1).is_none() {
ctx.notice(me, from.uid, format!("For a service's own commands, type \x02HELP <service>\x02. Services: {}.", net.help_services().join(", ")));
Some("HELP") | None => match args.get(1).copied() {
Some(t) if t.eq_ignore_ascii_case("extbans") || t.eq_ignore_ascii_case("extban") => extbans::handle(me, from, ctx, db),
other => match other.and_then(|s| net.service_help(s)) {
Some((blurb, topics)) => echo_api::help(me, from, ctx, blurb, topics, args.get(2).copied()),
None => {
echo_api::help(me, from, ctx, BLURB, TOPICS, other);
if other.is_none() {
ctx.notice(me, from.uid, format!("For a service's own commands, type \x02HELP <service>\x02. Services: {}.", net.help_services().join(", ")));
ctx.notice(me, from.uid, "For the extended ban types you can use, type \x02HELP EXTBANS\x02.");
}
}
}
},
},
// Not a HelpServ command — maybe the name of a service to get help for.
Some(_) => match net.service_help(args[0]) {