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232 lines
7.0 KiB
Perl
232 lines
7.0 KiB
Perl
# File: BlackList.pm
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# Author: pragma_
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#
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# Purpose: Manages list of hostmasks that are not allowed to join a channel.
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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::BlackList;
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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 $] >= 5.018, warnings => "experimental::smartmatch";
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use Carp ();
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use Time::HiRes qw(gettimeofday);
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sub new {
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if (ref($_[1]) eq 'HASH') {
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Carp::croak("Options to " . __FILE__ . " should be key/value pairs, not hash reference");
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}
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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 $conf{pbot} // Carp::croak("Missing pbot reference to " . __FILE__);
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$self->{filename} = delete $conf{filename};
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$self->{blacklist} = {};
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$self->{pbot}->{commands}->register(sub { return $self->blacklist(@_) }, "blacklist", 10);
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$self->load_blacklist;
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}
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sub add {
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my ($self, $channel, $hostmask) = @_;
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$self->{blacklist}->{lc $channel}->{lc $hostmask} = 1;
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$self->save_blacklist();
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}
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sub remove {
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my $self = shift;
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my ($channel, $hostmask) = @_;
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$channel = lc $channel;
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$hostmask = lc $hostmask;
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if (exists $self->{blacklist}->{$channel}) {
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delete $self->{blacklist}->{$channel}->{$hostmask};
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if (keys %{ $self->{blacklist}->{$channel} } == 0) {
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delete $self->{blacklist}->{$channel};
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}
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}
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$self->save_blacklist();
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}
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sub clear_blacklist {
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my $self = shift;
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$self->{blacklist} = {};
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}
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sub load_blacklist {
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my $self = shift;
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my $filename;
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if (@_) { $filename = shift; } else { $filename = $self->{filename}; }
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if (not defined $filename) {
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Carp::carp "No blacklist path specified -- skipping loading of blacklist";
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return;
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}
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$self->{pbot}->{logger}->log("Loading blacklist from $filename ...\n");
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open(FILE, "< $filename") or Carp::croak "Couldn't open $filename: $!\n";
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my @contents = <FILE>;
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close(FILE);
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my $i = 0;
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foreach my $line (@contents) {
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chomp $line;
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$i++;
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my ($channel, $hostmask) = split(/\s+/, $line);
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if (not defined $hostmask || not defined $channel) {
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Carp::croak "Syntax error around line $i of $filename\n";
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}
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if (exists $self->{blacklist}->{$channel}->{$hostmask}) {
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Carp::croak "Duplicate blacklist entry [$hostmask][$channel] found in $filename around line $i\n";
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}
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$self->{blacklist}->{$channel}->{$hostmask} = 1;
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}
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$self->{pbot}->{logger}->log(" $i entries in blacklist\n");
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$self->{pbot}->{logger}->log("Done.\n");
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}
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sub save_blacklist {
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my $self = shift;
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my $filename;
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if (@_) { $filename = shift; } else { $filename = $self->{filename}; }
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if (not defined $filename) {
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Carp::carp "No blacklist path specified -- skipping saving of blacklist\n";
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return;
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}
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open(FILE, "> $filename") or die "Couldn't open $filename: $!\n";
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foreach my $channel (keys %{ $self->{blacklist} }) {
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foreach my $hostmask (keys %{ $self->{blacklist}->{$channel} }) {
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print FILE "$channel $hostmask\n";
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}
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}
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close(FILE);
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}
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sub check_blacklist {
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my $self = shift;
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my ($hostmask, $channel, $nickserv, $gecos) = @_;
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return 0 if not defined $channel;
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foreach my $black_channel (keys %{ $self->{blacklist} }) {
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foreach my $black_hostmask (keys %{ $self->{blacklist}->{$black_channel} }) {
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my $flag = '';
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$flag = $1 if $black_hostmask =~ s/^\$(.)://;
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my $black_channel_escaped = quotemeta $black_channel;
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my $black_hostmask_escaped = quotemeta $black_hostmask;
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$black_channel_escaped =~ s/\\(\.|\*)/$1/g;
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$black_hostmask_escaped =~ s/\\(\.|\*)/$1/g;
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next if $channel !~ /^$black_channel_escaped$/;
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if ($flag eq 'a' && defined $nickserv && $nickserv =~ /^$black_hostmask_escaped$/i) {
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$self->{pbot}->{logger}->log("$hostmask nickserv $nickserv blacklisted in channel $channel (matches [\$a:$black_hostmask] host and [$black_channel] channel)\n");
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return 1;
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} elsif ($flag eq 'r' && defined $gecos && $gecos =~ /^$black_hostmask_escaped$/i) {
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$self->{pbot}->{logger}->log("$hostmask GECOS $gecos blacklisted in channel $channel (matches [\$r:$black_hostmask] host and [$black_channel] channel)\n");
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return 1;
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} elsif ($flag eq '' && $hostmask =~ /^$black_hostmask_escaped$/i) {
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$self->{pbot}->{logger}->log("$hostmask blacklisted in channel $channel (matches [$black_hostmask] host and [$black_channel] channel)\n");
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return 1;
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}
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}
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}
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return 0;
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}
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sub blacklist {
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my ($self, $from, $nick, $user, $host, $arguments, $stuff) = @_;
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my $arglist = $stuff->{arglist};
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$self->{pbot}->{interpreter}->lc_args($arglist);
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my $command = $self->{pbot}->{interpreter}->shift_arg($arglist);
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return "Usage: blacklist <command>, where commands are: list/show, add, remove" 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 = "Blacklist:\n";
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my $entries = 0;
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foreach my $channel (sort keys %{ $self->{blacklist} }) {
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if ($channel eq '.*') {
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$text .= " all channels:\n";
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} else {
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$text .= " $channel:\n";
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}
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foreach my $mask (sort keys %{ $self->{blacklist}->{$channel} }) {
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$text .= " $mask,\n";
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$entries++;
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}
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}
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$text .= "none" if $entries == 0;
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return "/msg $nick $text";
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}
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when ("add") {
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my ($mask, $channel) = $self->{pbot}->{interpreter}->split_args($arglist, 2);
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return "Usage: blacklist add <hostmask regex> [channel]" if not defined $mask;
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$channel = '.*' if not defined $channel;
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$self->{pbot}->{logger}->log("$nick!$user\@$host added [$mask] to blacklist for channel [$channel]\n");
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$self->add($channel, $mask);
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return "/say $mask blacklisted in channel $channel";
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}
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when ("remove") {
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my ($mask, $channel) = $self->{pbot}->{interpreter}->split_args($arglist, 2);
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return "Usage: blacklist remove <hostmask regex> [channel]" if not defined $mask;
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$channel = '.*' if not defined $channel;
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if (exists $self->{blacklist}->{$channel} and not exists $self->{blacklist}->{$channel}->{$mask}) {
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$self->{pbot}->{logger}->log("$nick attempt to remove nonexistent [$mask][$channel] from blacklist\n");
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return "/say $mask not found in blacklist for channel $channel (use `blacklist list` to display blacklist)";
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}
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$self->remove($channel, $mask);
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$self->{pbot}->{logger}->log("$nick!$user\@$host removed [$mask] from blacklist for channel [$channel]\n");
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return "/say $mask removed from blacklist for channel $channel";
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}
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default {
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return "Unknown command '$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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