mirror of
https://github.com/pragma-/pbot.git
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249 lines
8.8 KiB
Perl
249 lines
8.8 KiB
Perl
# File: BanTracker.pm
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# Author: pragma_
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#
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# Purpose: Populates and maintains channel banlists by checking mode +b on
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# joining channels and by tracking modes +b and -b in channels.
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#
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# Does NOT do banning or unbanning.
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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::BanTracker;
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use warnings;
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use strict;
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use feature 'unicode_strings';
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use Time::HiRes qw/gettimeofday/;
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use Time::Duration;
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use Data::Dumper;
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$Data::Dumper::Sortkeys = 1;
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use Carp ();
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sub new {
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if (ref($_[1]) eq 'HASH') {
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Carp::croak("Options to BanTracker 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 $conf{pbot} // Carp::croak("Missing pbot reference to BanTracker");
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$self->{banlist} = {};
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$self->{pbot}->{registry}->add_default('text', 'bantracker', 'chanserv_ban_timeout', '604800');
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$self->{pbot}->{registry}->add_default('text', 'bantracker', 'mute_timeout', '604800');
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$self->{pbot}->{registry}->add_default('text', 'bantracker', 'debug', '0');
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$self->{pbot}->{commands}->register(sub { $self->dumpbans(@_) }, "dumpbans", 60);
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$self->{pbot}->{event_dispatcher}->register_handler('irc.endofnames', sub { $self->get_banlist(@_) });
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$self->{pbot}->{event_dispatcher}->register_handler('irc.banlist', sub { $self->on_banlist_entry(@_) });
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$self->{pbot}->{event_dispatcher}->register_handler('irc.quietlist', sub { $self->on_quietlist_entry(@_) });
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}
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sub dumpbans {
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my ($self, $from, $nick, $user, $host, $arguments) = @_;
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my $bans = Dumper($self->{banlist});
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return $bans;
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}
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sub get_banlist {
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my ($self, $event_type, $event) = @_;
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my $channel = lc $event->{event}->{args}[1];
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return 0 if not $self->{pbot}->{chanops}->can_gain_ops($channel);
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delete $self->{banlist}->{$channel};
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$self->{pbot}->{logger}->log("Retrieving banlist for $channel.\n");
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$event->{conn}->sl("mode $channel +bq");
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return 0;
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}
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sub on_banlist_entry {
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my ($self, $event_type, $event) = @_;
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my $channel = lc $event->{event}->{args}[1];
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my $target = lc $event->{event}->{args}[2];
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my $source = lc $event->{event}->{args}[3];
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my $timestamp = $event->{event}->{args}[4];
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my $ago = ago(gettimeofday - $timestamp);
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$self->{pbot}->{logger}->log("ban-tracker: [banlist entry] $channel: $target banned by $source $ago.\n");
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$self->{banlist}->{$channel}->{'+b'}->{$target} = [ $source, $timestamp ];
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if ($target =~ m/^\*!\*@/ or $target =~ m/^\*!.*\@gateway\/web/i) {
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my $timeout = 60 * 60 * 24 * 7;
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if ($target =~ m/\// and $target !~ m/\@gateway/) {
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$timeout = 0; # permanent bans for cloaks that aren't gateway
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}
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if ($timeout && $self->{pbot}->{chanops}->can_gain_ops($channel)) {
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if (not exists $self->{pbot}->{chanops}->{unban_timeout}->hash->{$channel}->{$target}) {
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$self->{pbot}->{logger}->log("Temp ban for $target in $channel.\n");
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$self->{pbot}->{chanops}->{unban_timeout}->hash->{$channel}->{$target}{timeout} = gettimeofday + $timeout;
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$self->{pbot}->{chanops}->{unban_timeout}->hash->{$channel}->{$target}{owner} = $source;
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$self->{pbot}->{chanops}->{unban_timeout}->hash->{$channel}->{$target}{reason} = 'Temp ban on *!*@... or *!...@gateway/web';
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$self->{pbot}->{chanops}->{unban_timeout}->save;
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}
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}
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}
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return 0;
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}
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sub on_quietlist_entry {
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my ($self, $event_type, $event) = @_;
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my $channel = lc $event->{event}->{args}[1];
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my $target = lc $event->{event}->{args}[3];
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my $source = lc $event->{event}->{args}[4];
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my $timestamp = $event->{event}->{args}[5];
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my $ago = ago(gettimeofday - $timestamp);
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$self->{pbot}->{logger}->log("ban-tracker: [quietlist entry] $channel: $target quieted by $source $ago.\n");
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$self->{banlist}->{$channel}->{'+q'}->{$target} = [ $source, $timestamp ];
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return 0;
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}
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sub get_baninfo {
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my ($self, $mask, $channel, $account) = @_;
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my ($bans, $ban_account);
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$account = undef if not length $account;
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$account = lc $account if defined $account;
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if ($self->{pbot}->{registry}->get_value('bantracker', 'debug')) {
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$self->{pbot}->{logger}->log("[get-baninfo] Getting baninfo for $mask in $channel using account " . (defined $account ? $account : "[undefined]") . "\n");
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}
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my ($nick, $user, $host) = $mask =~ m/([^!]+)!([^@]+)@(.*)/;
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foreach my $mode (keys %{ $self->{banlist}->{$channel} }) {
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foreach my $banmask (keys %{ $self->{banlist}->{$channel}->{$mode} }) {
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if ($banmask =~ m/^\$a:(.*)/) {
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$ban_account = lc $1;
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} else {
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$ban_account = "";
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}
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my $banmask_key = $banmask;
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$banmask = quotemeta $banmask;
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$banmask =~ s/\\\*/.*?/g;
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$banmask =~ s/\\\?/./g;
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my $banned;
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$banned = 1 if defined $account and $account eq $ban_account;
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$banned = 1 if $mask =~ m/^$banmask$/i;
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if ($banmask_key =~ m{\@gateway/web/irccloud.com} and $host =~ m{^gateway/web/irccloud.com}) {
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my ($bannick, $banuser, $banhost) = $banmask_key =~ m/([^!]+)!([^@]+)@(.*)/;
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if (lc $user eq lc $banuser) {
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$banned = 1;
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}
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}
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if ($banned) {
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if (not defined $bans) {
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$bans = [];
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}
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my $baninfo = {};
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$baninfo->{banmask} = $banmask_key;
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$baninfo->{channel} = $channel;
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$baninfo->{owner} = $self->{banlist}->{$channel}->{$mode}->{$banmask_key}->[0];
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$baninfo->{when} = $self->{banlist}->{$channel}->{$mode}->{$banmask_key}->[1];
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$baninfo->{type} = $mode;
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#$self->{pbot}->{logger}->log("get-baninfo: dump: " . Dumper($baninfo) . "\n");
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#$self->{pbot}->{logger}->log("get-baninfo: $baninfo->{banmask} $baninfo->{type} in $baninfo->{channel} by $baninfo->{owner} on $baninfo->{when}\n");
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push @$bans, $baninfo;
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}
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}
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}
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return $bans;
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}
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sub is_banned {
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my ($self, $nick, $user, $host, $channel) = @_;
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my $message_account = $self->{pbot}->{messagehistory}->{database}->get_message_account($nick, $user, $host);
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my @nickserv_accounts = $self->{pbot}->{messagehistory}->{database}->get_nickserv_accounts($message_account);
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push @nickserv_accounts, undef;
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my $banned = undef;
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foreach my $nickserv_account (@nickserv_accounts) {
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my $baninfos = $self->get_baninfo("$nick!$user\@$host", $channel, $nickserv_account);
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if (defined $baninfos) {
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foreach my $baninfo (@$baninfos) {
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if ($self->{pbot}->{antiflood}->whitelisted($baninfo->{channel}, $baninfo->{banmask}, 'ban') || $self->{pbot}->{antiflood}->whitelisted($baninfo->{channel}, "$nick!$user\@$host", 'user')) {
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$self->{pbot}->{logger}->log("[BanTracker] is_banned: $nick!$user\@$host banned as $baninfo->{banmask} in $baninfo->{channel}, but allowed through whitelist\n");
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} else {
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if ($channel eq lc $baninfo->{channel}) {
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my $mode = $baninfo->{type} eq "+b" ? "banned" : "quieted";
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$self->{pbot}->{logger}->log("[BanTracker] is_banned: $nick!$user\@$host $mode as $baninfo->{banmask} in $baninfo->{channel} by $baninfo->{owner}\n");
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$banned = $baninfo;
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last;
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}
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}
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}
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}
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}
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return $banned;
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}
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sub track_mode {
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my $self = shift;
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my ($source, $mode, $target, $channel) = @_;
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$mode = lc $mode;
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$target = lc $target;
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$channel = lc $channel;
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if ($mode eq "+b" or $mode eq "+q") {
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$self->{pbot}->{logger}->log("ban-tracker: $target " . ($mode eq '+b' ? 'banned' : 'quieted') . " by $source in $channel.\n");
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$self->{banlist}->{$channel}->{$mode}->{$target} = [ $source, gettimeofday ];
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$self->{pbot}->{antiflood}->devalidate_accounts($target, $channel);
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}
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elsif ($mode eq "-b" or $mode eq "-q") {
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$self->{pbot}->{logger}->log("ban-tracker: $target " . ($mode eq '-b' ? 'unbanned' : 'unquieted') . " by $source in $channel.\n");
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delete $self->{banlist}->{$channel}->{$mode eq "-b" ? "+b" : "+q"}->{$target};
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if ($mode eq "-b") {
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if ($self->{pbot}->{chanops}->{unban_timeout}->find_index($channel, $target)) {
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$self->{pbot}->{chanops}->{unban_timeout}->remove($channel, $target);
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} elsif ($self->{pbot}->{chanops}->{unban_timeout}->find_index($channel, "$target\$##stop_join_flood")) {
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# freenode strips channel forwards from unban result if no ban exists with a channel forward
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$self->{pbot}->{chanops}->{unban_timeout}->remove($channel, "$target\$##stop_join_flood");
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}
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}
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elsif ($mode eq "-q") {
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if ($self->{pbot}->{chanops}->{unmute_timeout}->find_index($channel, $target)) {
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$self->{pbot}->{chanops}->{unmute_timeout}->remove($channel, $target);
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}
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}
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} else {
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$self->{pbot}->{logger}->log("BanTracker: Unknown mode '$mode'\n");
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}
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}
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1;
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