weechat/scripts/perl/antifuck.pl

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Perl
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2023-06-08 07:29:31 +00:00
# Released into the Public Domain
use strict;
use warnings;
no strict 'subs';
my $SCRIPT_NAME = 'antifuck';
my $SCRIPT_AUTHOR = 'The Krusty Krab <wowaname@volatile.ch>';
my $SCRIPT_VERSION = '1.1';
my $SCRIPT_LICENCE = 'Public domain';
my $SCRIPT_DESC = 'Defend against forcejoins (e.g. from fuckyou.pl) and '.
'forceparts (e.g. from /remove)';
my %OPTIONS = (
autopart => ['Whether to automatically part forcejoined channels. '.
'You can always do this manually with /antifuck part', '0'],
delay => ['Delay in milliseconds to wait before autoparting', '5000'],
forward => ['Whether to allow channel forwards (+f on freenode)', '1'],
ignore => ['Servers to ignore (e.g. for bouncers), separated by comma', ''],
nobufs => ['If 1, do not create buffers for forcejoined channels', '0'],
timeout =>
['Delay in milliseconds to wait for server to send JOIN after join',
'60000'],
);
# %channels: channels we joined and received JOIN / NAMES for
# %zombie: channels we joined but aren't yet in
# %part: channels we were forced into and will part soon
# %partbuf: buffers belonging to parted channels, we'll close these on
# /antifuck part
our (%channels, %zombie, %part, %partbuf, $fuckbuf, $timeout_cb, $gc_cb);
if (weechat::register($SCRIPT_NAME, $SCRIPT_AUTHOR, $SCRIPT_VERSION,
$SCRIPT_LICENCE, $SCRIPT_DESC, '', '')) {
weechat::hook_command('antifuck', $SCRIPT_DESC, 'part', <<'HELP',
This script defends against forced joins, such as from irssi's fuckyou.pl or
from channel forwards, as well as forced parts, such as from the /remove
command. You can configure certain behaviour using the options under
"plugins.var.perl.antifuck.*". Configure rejoin-on-/remove with the
irc.server_default.autorejoin and .autorejoin_delay commands.
Running "/antifuck part" will close all forcejoined channels and part them where
appropriate.
HELP
'part', 'cmd_antifuck', '');
weechat::hook_signal('irc_server_connected', 'irc_connect', '');
weechat::hook_signal('irc_server_disconnected', 'irc_disconnect', '');
weechat::hook_signal('irc_channel_opened', 'buffer_opened', '');
weechat::hook_signal('buffer_closed', 'buffer_closed', '');
weechat::hook_signal('*,irc_out1_join', 'client_join', '');
weechat::hook_signal('*,irc_out1_part', 'client_part', '');
weechat::hook_signal('*,irc_raw_in_001', 'irc_001', '');
weechat::hook_signal('*,irc_raw_in_470', 'irc_470', '');
weechat::hook_modifier('irc_in_366', 'irc_366', '');
weechat::hook_modifier('irc_in_join', 'irc_join', '');
weechat::hook_modifier('irc_in_part', 'irc_part', '');
for my $option (keys %OPTIONS) {
weechat::config_set_plugin($option, $OPTIONS{$option}[1])
unless weechat::config_is_set_plugin($option);
weechat::config_set_desc_plugin($option, $OPTIONS{$option}[0]);
}
my $iptr = weechat::infolist_get('buffer', '', '');
while (weechat::infolist_next($iptr)) {
next unless weechat::infolist_string($iptr, 'plugin_name') eq 'irc';
my $buf = weechat::infolist_pointer($iptr, 'pointer');
$channels{
lc weechat::buffer_get_string($buf, 'localvar_server')}{
lc weechat::buffer_get_string($buf, 'localvar_channel')} = 1;
}
weechat::infolist_free($iptr);
}
sub mynick
{
my ($buf, $nick) = ($_[0], $_[1]);
return lc weechat::buffer_get_string($buf, 'localvar_nick') eq lc $nick;
}
sub ignored
{
my $server = shift;
my $ignore_conf = lc weechat::config_get_plugin('ignore');
return $ignore_conf =~ /(^|,)$server($|,)/;
}
sub nobufs { weechat::config_get_plugin('nobufs') }
sub ircbuf { weechat::buffer_search('irc', "(?i)".(join '.', @_)) }
sub ircparse { weechat::info_get_hashtable(irc_message_parse =>
{ message => shift }) }
sub servchan
{
my $buf = shift;
return (lc weechat::buffer_get_string($buf, 'localvar_server'),
lc weechat::buffer_get_string($buf, 'localvar_channel'));
}
sub reset_gc
{
weechat::unhook($gc_cb) if $gc_cb;
$gc_cb = weechat::hook_timer(weechat::config_get_plugin('timeout'), 0, 1,
'run_gc', '');
}
sub cmd_antifuck
{
my (undef, $buffer, $args) = @_;
if ($args eq 'part') {
# TODO: we really need to spend more time here making sure we send the
# fewest PARTs possible, a la irc_join_delay
weechat::buffer_close($fuckbuf);
}
return weechat::WEECHAT_RC_OK;
}
sub fuckbuf_input { return weechat::WEECHAT_RC_OK; }
sub fuckbuf_close
{
weechat::buffer_close($_) for (keys %partbuf);
%partbuf = ();
$fuckbuf = '';
return weechat::WEECHAT_RC_OK;
}
sub irc_connect
{
my $server = pop;
my ($autojoin) = (weechat::config_string(weechat::config_get(
"irc.server.$server.autojoin")) =~ /^([^ ]*)/);
$zombie{$server}{$_} = 1 for (split ',', lc($autojoin));
return weechat::WEECHAT_RC_OK;
}
sub irc_disconnect
{
my $server = pop;
$server = lc $server;
delete $channels{$server};
delete $zombie{$server};
delete $part{$server};
return weechat::WEECHAT_RC_OK;
}
sub buffer_opened {
my $buffer = pop;
my ($server, $channel) = servchan($buffer);
return weechat::WEECHAT_RC_OK if exists $channels{$server}{$channel};
return weechat::WEECHAT_RC_OK if ignored($server);
$fuckbuf = weechat::buffer_new(
'antifuck',
'fuckbuf_input',
'',
'fuckbuf_close',
''
) unless $fuckbuf;
weechat::buffer_merge($buffer, $fuckbuf);
#return weechat::WEECHAT_RC_OK unless weechat::config_get_plugin('autopart');
$partbuf{$buffer} = 1;
return weechat::WEECHAT_RC_OK;
}
sub buffer_closed {
my $buffer = pop;
delete $partbuf{$buffer};
return weechat::WEECHAT_RC_OK;
}
sub client_join
{
my (undef, $server, $channel) = (shift,
shift =~ /(.+),irc_out1_join/i,
shift =~ /^join :?([^ ]*)/i);
($server, $channel) = (lc $server, lc $channel);
reset_gc();
($_ eq '0' ? %{$channels{$server}} = () : $zombie{$server}{$_} = 1)
for (split ',', $channel);
return weechat::WEECHAT_RC_OK;
}
sub client_part
{
my (undef, $server, $channel) = (shift,
shift =~ /(.+),irc_out1_part/i,
shift =~ /^part ([^ ]*)/i);
($server, $channel) = (lc $server, lc $channel);
delete $channels{$server}{$_} for (split ',', $channel);
return weechat::WEECHAT_RC_OK;
}
# RPL_WELCOME
sub irc_001
{
my (undef, $server, $message) = (shift,
shift =~ /(.+),irc_raw_in_001/, shift);
$server = lc $server;
return weechat::WEECHAT_RC_OK unless $message =~ / :- Welcome to ZNC -$/;
my $ignore_conf = lc weechat::config_get_plugin('ignore');
return weechat::WEECHAT_RC_OK if $ignore_conf =~ /(^|,)$server($|,)/;
weechat::config_set_plugin('ignore', "$ignore_conf,$server");
return weechat::WEECHAT_RC_OK;
}
sub irc_join
{
my ($server, $message, $msghash) = (lc $_[2], $_[3], ircparse($_[3]));
my ($nick, $channel) = ($msghash->{nick}, lc $msghash->{channel});
my $buffer = ircbuf("$server.$channel");
return $message if exists $channels{$server}{$channel};
if (exists $zombie{$server}{$channel} || ignored($server)) {
delete $zombie{$server}{$channel};
$channels{$server}{$channel} = 1;
return $message;
}
# XXX return $message unless mynick($buffer, $nick);
$part{$server}{$channel} = 1;
$timeout_cb = weechat::hook_timer(
weechat::config_get_plugin('delay'), 0, 1, 'irc_join_delay', $buffer)
unless $timeout_cb || !weechat::config_get_plugin('autopart');
return $message unless nobufs();
$fuckbuf = weechat::buffer_new(
'antifuck',
'fuckbuf_input',
'',
'fuckbuf_close',
''
) unless $fuckbuf;
weechat::print($fuckbuf, weechat::prefix('join').
weechat::color('irc.color.message_join').
'You were forced to join '.weechat::color('chat_channel').$channel.
weechat::color('irc.color.message_join').', leaving');
return '';
}
# RPL_ENDOFNAMES
sub irc_366
{
my ($server, $message) = ($_[2], $_[3]);
my ($nick, $channel) = $message =~ /^:[^ ]* 366 ([^ ]*) ([^ ]*)/i;
my $buffer = ircbuf("$server.$channel");
($server, $channel) = (lc $server, lc $channel);
return $message if exists $channels{$server}{$channel};
return '' if nobufs();
weechat::print($buffer, weechat::prefix('network').
'Forcejoined, not syncing modes');
return '';
}
# ERR_LINKCHANNEL
sub irc_470
{
my (undef, $server, $oldchan, $newchan) = (shift,
shift =~ /(.+),irc_raw_in_470/,
shift =~ /^:[^ ]* 470 [^ ]+ ([^ ]+) ([^ ]+)/);
($server, $oldchan, $newchan) = (lc $server, lc $oldchan, lc $newchan);
delete $channels{$server}{$oldchan};
$channels{$server}{$newchan} = 1 if weechat::config_get_plugin('forward');
return weechat::WEECHAT_RC_OK;
}
sub irc_join_delay
{
my $buffer = shift;
for my $server (keys %part) {
my $chans = '';
for my $chan (keys %{$part{$server}}) {
if (length($chans) + length($chan) > 500) {
weechat::hook_signal_send('irc_input_send',
weechat::WEECHAT_HOOK_SIGNAL_STRING,
"$server;;priority_low;;/part $chans");
$chans = '';
}
$chans .= "$chan,";
}
weechat::hook_signal_send('irc_input_send',
weechat::WEECHAT_HOOK_SIGNAL_STRING,
"$server;;priority_low;;/part $chans");
}
$timeout_cb = '';
%part = ();
return weechat::WEECHAT_RC_OK;
}
sub run_gc
{
%zombie = ();
return weechat::WEECHAT_RC_OK;
}
sub irc_part
{
my ($server, $message, $msghash) = ($_[2], $_[3], ircparse($_[3]));
my ($arj, $arj_delay, $arjd, $arjd_delay) = (
weechat::config_get("irc.server.$server.autorejoin"),
weechat::config_get("irc.server.$server.autorejoin_delay"),
weechat::config_get("irc.server_default.autorejoin"),
weechat::config_get("irc.server_default.autorejoin_delay")
);
return $message unless (
weechat::config_option_is_null($arj) ?
weechat::config_boolean($arjd) :
weechat::config_boolean($arj)
);
my ($nick, $channel, $reason) = ($msghash->{nick}, $msghash->{channel},
$msghash->{text});
my $buffer = ircbuf("$server.$channel");
my ($lserver, $lchannel) = (lc $server, lc $channel);
return $message unless mynick($buffer, $nick);
return $message unless exists $channels{$lserver}{$lchannel};
return $message if ignored($lserver);
weechat::print($buffer, weechat::prefix('quit').
weechat::color('irc.color.message_quit').
'You were forced to part '.weechat::color('chat_channel').$channel.
weechat::color('chat_delimiters').' ('.weechat::color('reset').
$reason.weechat::color('chat_delimiters').')'.
weechat::color('irc.color.message_quit').', rejoining');
my $delay = (
weechat::config_option_is_null($arj_delay) ?
weechat::config_integer($arjd_delay) :
weechat::config_integer($arj_delay)
);
weechat::command($buffer, ($delay ? "/wait $delay " : "").
"/join $channel");
return '';
}