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BotServ BADWORDS: user-configurable regex kicker

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BADWORDS <#channel> ADD|DEL|LIST|CLEAR manages a channel's badword
patterns, each a regular expression, so a channel matches whatever it
wants — an improvement over Anope's fixed ANY/SINGLE/START/END. Enable
with KICK <#channel> BADWORDS ON.

Uses the regex crate: it's finite-automata based with linear-time
matching, so untrusted user patterns can't cause catastrophic
backtracking (ReDoS). A channel's patterns compile into one RegexSet
(single-pass match against all of them), cached in the engine and rebuilt
only when the list's revision changes — so the hot path is one is_match
call, no per-message compilation or allocation. Patterns are validated
(and size-limited) at add time; matching is case-insensitive by default.
This commit is contained in:
Jean Chevronnet 2026-07-13 16:16:44 +00:00
parent 43def8ee23
commit ca95184359
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9 changed files with 238 additions and 7 deletions
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@ -294,6 +294,7 @@ dependencies = [
"hmac",
"pbkdf2",
"prost",
"regex",
"rustls-pemfile",
"serde",
"serde_json",