summaryrefslogtreecommitdiffstats
path: root/scripts/badword.pl
blob: 20a0b57516b2359577c7bd2086dee437db4a550d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
###############################################################################
# badword.pl
# Copyright (C) 2002  Jan 'fissie' Sembera <fis@ji.cz>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
###############################################################################
# This is configurable badword script. It may be configured to ban immediately
# when first badword is detected, or it may count badwords and if number of 
# badwords of given nick exceeds limit, ban him. Badword count may also be
# expired if no badword is seen for specified period of time. Optional 
# verbosity (let's call it logging) may be enabled as well
#
# Runtime variables:
#
# badword_channels = list of channels where script is active, separated by space
# badword_words = list of 'bad words' that trigger this, separated by space
# badword_reason = reason used in kick when count exceeds permitted limit
# badword_limit = if number of detected badwords reaches this number, ban'em. 
#                 Set 1 to immediately kickban.
# badword_clear_delay = if no badword is detected from user for time specified
#                       here (in seconds), clear his counter. Set 0 to disable.
# badword_verbose = turns on/off logging features
# badword_ban_delay = ban after number of kicks specified here. 0 - disables
#                     banning, 1 - ban immediately, ... 
###############################################################################
#
# Changelog:
#
# Jun 4 2002
#    - added ban delaying feature
#
###############################################################################
use Irssi;
use Irssi::Irc;
use strict;
use vars qw($VERSION %IRSSI);

$VERSION = "0.0.3";

%IRSSI = (
    authors     =>  "Jan 'fissie' Sembera",
    contact     =>  "fis\@ji.cz",
    name        =>  "badword",
    description =>  "Configurable badword kickbanning script",
    license     =>  "GPL v2 and any later",
    url         =>  "http://fis.bofh.cz/devel/irssi/",
);

my %nick_dbase;

sub sig_public {
  my ($server, $msg, $nick, $address, $target) = @_;
  my $watch_channels = Irssi::settings_get_str('badword_channels');
  my $watch_words    = Irssi::settings_get_str('badword_words');

  my @chanz = split (/ /, $watch_channels); 
  my @wordz = split (/ /, $watch_words); 
  
  my $nickrec = $server->channel_find($target)->nick_find($nick);
  my $nickmode = $nickrec->{op} ? "@" : $nickrec->{voice} ? "+" : "";

  my $aux = 0;

  if (! ($nickmode eq "")) {
    return;
  }

  foreach my $ch (@chanz) {
    if ($ch eq $target) {
      $aux = 1;
    }
  }

  if ($aux == 0) { 
    return;
  } 

  $aux = 0; 
  foreach my $bw (@wordz) {
#   if (($msg =~ /\ $bw/) || ($msg =~ /^$bw/)) {
    if ($msg =~ /$bw/) {
      $aux = 1;
    } 
  }

  if ($aux == 0) {
    return;
  }

  # Ok, here comes badword, check record

  my $luser = $nick_dbase{$nick}{$target};
  
  if (!$luser) {
    $nick_dbase{$nick}{$target}{'count'} = 1;
    $nick_dbase{$nick}{$target}{'kcount'} = 0;
    $nick_dbase{$nick}{$target}{'stamp'} = time();
  } else {
    if ((Irssi::settings_get_int('badword_clear_delay') != 0) && (($nick_dbase{$nick}{$target}{'stamp'})+(Irssi::settings_get_int('badword_clear_delay'))) < time()) {
      $nick_dbase{$nick}{$target}{'count'} = 1;
      if (Irssi::settings_get_bool('badword_verbose') == 1) { Irssi::print('BW: Expired for '.$nick.' with hostmask '.$address.' on channel '.$target); }
    } else {
      $nick_dbase{$nick}{$target}{'count'} = ($nick_dbase{$nick}{$target}{'count'})+1; 
    }
    $nick_dbase{$nick}{$target}{'stamp'} = time();
  }

  $luser = $nick_dbase{$nick}{$target}{'count'};

  if (Irssi::settings_get_bool('badword_verbose') == 1) { Irssi::print('BW: Detected badword from nick '.$nick.' with hostmask '.$address.' on channel '.$target.' - '.$nick_dbase{$nick}{$target}{'count'}.' times'); }
 
  if ($luser == Irssi::settings_get_int('badword_limit')) {
    $nick_dbase{$nick}{$target}{'count'} = 0;
    # Ban'em!
    my @host = split(/\@/, $address);
    if (($host[0] =~ /\~/) || ($host[0] =~ /\-/) || ($host[0] =~ /\=/) || ($host[0] =~ /\^/)) { $host[0] = "*"; }
    my $mask = '*!'.$host[0].'@'.$host[1];
    $nick_dbase{$nick}{$target}{'kcount'} = ($nick_dbase{$nick}{$target}{'kcount'})+1; 
    if ((Irssi::settings_get_int('badword_ban_delay') > 0) && (Irssi::settings_get_int('badword_ban_delay') == $nick_dbase{$nick}{$target}{'kcount'})) {
      $server->command('mode '.$target.' +b '.$mask);
      $nick_dbase{$nick}{$target}{'kcount'} = 0;
      if (Irssi::settings_get_bool('badword_verbose') == 1) { Irssi::print('BW: Nick '.$nick.' with mask '.$mask.' punished for badwording on channel '.$target.' - banned'); } 
    } else {
      if (Irssi::settings_get_bool('badword_verbose') == 1) { Irssi::print('BW: Nick '.$nick.' with mask '.$mask.' punished for badwording on channel '.$target.' - kicked'); }
    }
    $server->command('quote kick '.$target.' '.$nick.' :'.Irssi::settings_get_str('badword_reason'));
  } 
}

sub sig_nick {
  my ($server, $newnick, $nick, $address) = @_;

  $newnick = substr ($newnick, 1) if ($newnick =~ /^:/);
  my $count = $nick_dbase{$nick}; 
  if ($count) {
    $nick_dbase{$nick} = undef;
    $nick_dbase{$newnick} = $count; 
    if (Irssi::settings_get_bool('badword_verbose') == 1) { Irssi::print('BW: Tranferred badwords from '.$nick.' to '.$newnick); }
  }
}

Irssi::settings_add_str("misc", "badword_channels", "");
Irssi::settings_add_str("misc", "badword_words", "");
Irssi::settings_add_str("misc", "badword_reason", "BW: badword limit exceeded"); 
Irssi::settings_add_int("misc", "badword_limit", 3);
Irssi::settings_add_int("misc", "badword_clear_delay", 3600);
Irssi::settings_add_int("misc", "badword_ban_delay", 1);
Irssi::settings_add_bool("misc", "badword_verbose", 0); 

Irssi::signal_add_last('message public', 'sig_public');
Irssi::signal_add_last('event nick', 'sig_nick');