mirror of https://github.com/pragma-/pbot.git
210 lines
5.9 KiB
Perl
210 lines
5.9 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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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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}
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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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$self->save_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) = @_;
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return 0 if not defined $channel;
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foreach my $shit_channel (keys %{ $self->{blacklist} }) {
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foreach my $shit_hostmask (keys %{ $self->{blacklist}->{$shit_channel} }) {
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my $shit_channel_escaped = quotemeta $shit_channel;
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my $shit_hostmask_escaped = quotemeta $shit_hostmask;
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$shit_channel_escaped =~ s/\\(\.|\*)/$1/g;
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$shit_hostmask_escaped =~ s/\\(\.|\*)/$1/g;
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if(($channel =~ /$shit_channel_escaped/i) && ($hostmask =~ /$shit_hostmask_escaped/i)) {
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$self->{pbot}->{logger}->log("$hostmask blacklisted in channel $channel (matches [$shit_hostmask] host and [$shit_channel] channel)\n");
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return 1;
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}
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}
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}
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return 0;
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}
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sub blacklist {
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my ($self, $from, $nick, $user, $host, $arguments) = @_;
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$arguments = lc $arguments;
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my ($command, $args) = split / /, $arguments, 2;
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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 $text;
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}
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when("add") {
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my ($mask, $channel) = split / /, $args, 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, $mask);
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return "$mask blacklisted in channel $channel";
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}
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when("remove") {
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my ($mask, $channel) = split / /, $args, 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][$channel] from blacklist\n");
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return "$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 [$channel]\n");
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return "$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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