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The client of the future https://irssi.org
6,932 commits 7 branches 77 tags 14 MiB
  • C 90.6%
  • XS 3.4%
  • Perl 2.1%
  • Meson 2%
  • Prolog 1.5%
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Acts1631 294fa3d83f irc-proxy: guard NULL chatnet in CTCP forwarding 
In sig_server_event(), when an incoming CTCP PRIVMSG is forwarded to a
proxy client that has CTCP forwarding enabled (want_ctcp == 1), the code
calls strstr(rec->proxy_address, server->connrec->chatnet). If the
victim is connected to a server without a chatnet (connrec->chatnet ==
NULL, e.g. connected via /server without a network definition),
strstr() dereferences the NULL second argument and crashes irssi
(SIGSEGV). A remote IRC user triggers this simply by sending a CTCP
PRIVMSG to such a victim.

connrec->chatnet is nullable throughout irssi (guarded with == NULL in
fe-notifylist, fe-server, chatnets, channels) and the sibling handler
event_connected() in this same file already guards it with
'chatnet != NULL &&' at the equivalent strstr() call. This path was
simply missing the same guard.
2026-07-06 10:48:12 -04:00
.github/workflows Add muon fmt GitHub Actions workflow 2026-01-26 21:02:10 -08:00
.obs test OBS workflow 2022-05-19 14:37:59 +02:00
docs run meson formatter 2026-01-25 22:07:44 +01:00
fuzz-support Fix some glib deprecation warnings 2019-10-31 23:49:40 +01:00
scripts run meson formatter 2026-01-25 22:07:44 +01:00
src irc-proxy: guard NULL chatnet in CTCP forwarding 2026-07-06 10:48:12 -04:00
subprojects up glib wrap 2026-01-23 21:21:10 +01:00
tests run meson formatter 2026-01-25 22:07:44 +01:00
themes run meson formatter 2026-01-25 22:07:44 +01:00
utils fix clang-format-xs boot code 2026-01-24 20:53:29 +01:00
.clang-format fix clang formatting 2021-04-01 21:21:06 +02:00
.gitattributes Add .gitattributes to ensure all shell scripts have LF as eol-style. 2016-01-31 20:49:59 +02:00
.gitignore good-bye and thanks, autotools 2022-02-19 21:44:10 +01:00
.muon_fmt.ini run meson formatter 2026-01-25 22:07:44 +01:00
AUTHORS Add OTR support. 2018-02-26 23:32:57 +01:00
COPYING Update FSF address. 2007-05-08 17:51:51 +00:00
INSTALL Add a few more compile dependencies to INSTALL document 2026-01-23 22:17:39 +01:00
irssi-icon.png New icon by ditCh. 2008-03-04 17:46:11 +00:00
irssi.conf new SHELP default alias 2022-04-24 15:40:20 +02:00
MANIFEST.in Add some missing files to make-dist 2022-02-20 18:55:45 +01:00
meson.build Format root meson.build 2026-01-26 21:02:10 -08:00
meson_options.txt remove deprecated defines 2022-02-20 17:33:36 +01:00
NEWS Merge tag '1.4.5' into integrate/1.4.5 2023-10-01 19:19:33 +02:00
README.md Update minimum required Perl version in readme 2024-04-01 22:10:35 +02:00
TODO Add todo for gnutls. 2008-03-30 13:53:33 +00:00

README.md

Irssi

Build Status

Irssi is a modular text mode chat client. It comes with IRC support built in, and there are third party ICB, SILC, XMPP (Jabber), PSYC and Quassel protocol modules available.

irssi

Download information

Development source installation

Ninja 1.8 and Meson 0.53

git clone https://github.com/irssi/irssi
cd irssi
meson Build
ninja -C Build && sudo ninja -C Build install

Release source installation

  • Download release
  • Verify signature
tar xJf irssi-*.tar.xz
cd irssi-*
meson Build
ninja -C Build && sudo ninja -C Build install

Requirements

See the INSTALL file for details

Documentation

Themes

Scripts

Modules

Security information

Please report security issues to staff@irssi.org. Thanks!

Bugs / Suggestions / Contributing

Check the GitHub issues if it is already listed in there; if not, open an issue on GitHub or send a mail to staff@irssi.org.

Irssi is always looking for developers. Feel free to submit patches through GitHub pull requests.

You can also contact the Irssi developers in #irssi on irc.libera.chat.