mirror of https://github.com/pragma-/pbot.git
184 lines
6.2 KiB
Perl
184 lines
6.2 KiB
Perl
![]() |
# File: AntiSpam.pm
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# Author: pragma_
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#
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# Purpose: Checks if a message is spam
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package PBot::AntiSpam;
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use warnings;
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use strict;
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use feature 'switch';
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no if $] >= 5.018, warnings => "experimental::smartmatch";
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use PBot::DualIndexHashObject;
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use Carp ();
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use Time::HiRes qw(gettimeofday);
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use POSIX qw/strftime/;
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sub new {
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Carp::croak("Options to " . __FILE__ . " should be key/value pairs, not hash reference") if ref($_[1]) eq 'HASH';
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my ($class, %conf) = @_;
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my $self = bless {}, $class;
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$self->initialize(%conf);
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return $self;
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}
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sub initialize {
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my ($self, %conf) = @_;
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$self->{pbot} = delete $conf{pbot} // Carp::croak("Missing pbot reference to " . __FILE__);
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my $filename = delete $conf{spamkeywords_file} // $self->{pbot}->{registry}->get_value('general', 'data_dir') . '/spam_keywords';
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$self->{keywords} = PBot::DualIndexHashObject->new(name => 'SpamKeywords', filename => $filename);
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$self->{keywords}->load;
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$self->{pbot}->{registry}->add_default('text', 'antispam', 'enforce', $conf{enforce_antispam} // 1);
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$self->{pbot}->{commands}->register(sub { return $self->antispam_cmd(@_) }, "antispam", 10);
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}
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sub is_spam {
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my ($self, $channel, $text) = @_;
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return 0 if not $self->{pbot}->{registry}->get_value('antispam', 'enforce');
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return 0 if $self->{pbot}->{registry}->get_value($channel, 'dont_enforce_antispam');
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my $ret = eval {
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foreach my $chan (keys %{ $self->{keywords}->hash }) {
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next unless $channel =~ m/^$chan$/i;
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foreach my $keyword (keys %{ $self->{keywords}->hash->{$chan} }) {
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return 1 if $text =~ m/$keyword/i;
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}
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}
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return 0;
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};
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if ($@) {
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$self->{pbot}->{logger}->log("Error in is_spam: $@");
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return 0;
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}
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$self->{pbot}->{logger}->log("AntiSpam: spam detected!\n") if $ret;
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return $ret;
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}
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sub antispam_cmd {
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my ($self, $from, $nick, $user, $host, $arguments) = @_;
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$arguments = lc $arguments;
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my ($command, $args) = split /\s+/, $arguments, 2;
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return "Usage: antispam <command>, where commands are: list/show, add, remove, set, unset" if not defined $command;
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given ($command) {
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when ($_ eq "list" or $_ eq "show") {
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my $text = "Spam keywords:\n";
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my $entries = 0;
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foreach my $channel (keys %{ $self->{keywords}->hash }) {
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$text .= " $channel:\n";
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foreach my $keyword (keys %{ $self->{keywords}->hash->{$channel} }) {
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$text .= " $keyword,\n";
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$entries++;
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}
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}
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$text .= "none" if $entries == 0;
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return $text;
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}
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when ("set") {
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my ($channel, $keyword, $flag, $value) = split /\s+/, $args, 4;
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return "Usage: keywords set <channel> <keyword> [flag] [value]" if not defined $channel or not defined $keyword;
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if (not exists $self->{keywords}->hash->{$channel}) {
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return "There is no such channel `$channel` in the keywords.";
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}
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if (not exists $self->{keywords}->hash->{$channel}->{$keyword}) {
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return "There is no such keyword `$keyword` for channel `$channel` in the keywords.";
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}
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if (not defined $flag) {
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my $text = "Flags:\n";
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my $comma = '';
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foreach $flag (keys %{ $self->{keywords}->hash->{$channel}->{$keyword} }) {
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if ($flag eq 'created_on') {
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my $timestamp = strftime "%a %b %e %H:%M:%S %Z %Y", localtime $self->{keywords}->hash->{$channel}->{$keyword}->{$flag};
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$text .= $comma . "created_on: $timestamp";
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} else {
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$value = $self->{keywords}->hash->{$channel}->{$keyword}->{$flag};
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$text .= $comma . "$flag: $value";
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}
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$comma = ",\n ";
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}
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return $text;
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}
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if (not defined $value) {
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$value = $self->{keywords}->hash->{$channel}->{$keyword}->{$flag};
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if (not defined $value) {
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return "/say $flag is not set.";
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} else {
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return "/say $flag is set to $value";
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}
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}
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$self->{keywords}->hash->{$channel}->{$keyword}->{$flag} = $value;
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$self->{keywords}->save;
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return "Flag set.";
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}
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when ("unset") {
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my ($channel, $keyword, $flag) = split /\s+/, $args, 3;
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return "Usage: keywords unset <channel> <keyword> <flag>" if not defined $channel or not defined $keyword or not defined $flag;
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if (not exists $self->{keywords}->hash->{$channel}) {
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return "There is no such channel `$channel` in the keywords.";
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}
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if (not exists $self->{keywords}->hash->{$channel}->{$keyword}) {
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return "There is no such keyword `$keyword` for channel `$channel` in the keywords.";
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}
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if (not exists $self->{keywords}->hash->{$channel}->{$keyword}->{$flag}) {
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return "There is no such flag `$flag` for keyword `$keyword` for channel `$channel` in the keywords.";
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}
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delete $self->{keywords}->hash->{$channel}->{$keyword}->{$flag};
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$self->{keywords}->save;
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return "Flag unset.";
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}
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when ("add") {
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my ($channel, $keyword) = split /\s+/, $args, 2;
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return "Usage: keywords add <channel> <keyword>" if not defined $channel or not defined $keyword;
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$self->{keywords}->hash->{$channel}->{$keyword}->{owner} = "$nick!$user\@$host";
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$self->{keywords}->hash->{$channel}->{$keyword}->{created_on} = gettimeofday;
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$self->{keywords}->save;
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return "/say Added.";
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}
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when ("remove") {
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my ($channel, $keyword) = split /\s+/, $args, 2;
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return "Usage: keywords remove <channel> <keyword>" if not defined $channel or not defined $keyword;
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if(not defined $self->{keywords}->hash->{$channel}) {
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return "No entries for channel $channel";
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}
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if(not defined $self->{keywords}->hash->{$channel}->{$keyword}) {
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return "No such entry for channel $channel";
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}
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delete $self->{keywords}->hash->{$channel}->{$keyword};
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delete $self->{keywords}->hash->{$channel} if keys %{ $self->{keywords}->hash->{$channel} } == 0;
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$self->{keywords}->save;
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return "/say Removed.";
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}
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default {
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return "Unknown command '$command'; commands are: list/show, add, remove";
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}
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}
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}
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1;
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