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pbot/PBot/PBot.pm
2020-03-06 13:31:22 -08:00

498 lines
18 KiB
Perl

# File: PBot.pm
# Author: pragma_
#
# Purpose: IRC Bot (3rd generation)
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
package PBot::PBot;
use strict; use warnings;
use feature 'unicode_strings';
# unbuffer stdout
STDOUT->autoflush(1);
use Carp ();
use PBot::Logger;
use PBot::VERSION;
use PBot::HashObject;
use PBot::DualIndexHashObject;
use PBot::DualIndexSQLiteObject;
use PBot::Registry;
use PBot::Capabilities;
use PBot::SelectHandler;
use PBot::StdinReader;
use PBot::IRC;
use PBot::EventDispatcher;
use PBot::IRCHandlers;
use PBot::Channels;
use PBot::BanTracker;
use PBot::NickList;
use PBot::LagChecker;
use PBot::MessageHistory;
use PBot::AntiFlood;
use PBot::AntiSpam;
use PBot::Interpreter;
use PBot::Commands;
use PBot::ChanOps;
use PBot::Factoids;
use PBot::Users;
use PBot::IgnoreList;
use PBot::BlackList;
use PBot::Timer;
use PBot::Refresher;
use PBot::WebPaste;
use PBot::Utils::ParseDate;
use PBot::Plugins;
use PBot::Functions;
use PBot::Modules;
use PBot::ProcessManager;
sub new {
my ($proto, %conf) = @_;
my $class = ref($proto) || $proto;
my $self = bless {}, $class;
$self->initialize(%conf);
return $self;
}
sub initialize {
my ($self, %conf) = @_;
$self->{startup_timestamp} = time;
my $data_dir = $conf{data_dir};
my $module_dir = $conf{module_dir};
my $plugin_dir = $conf{plugin_dir};
# check command-line arguments for directory overrides
foreach my $arg (@ARGV) {
if ($arg =~ m/^-?(?:general\.)?((?:data|module|plugin)_dir)=(.*)$/) {
my $override = $1;
my $value = $2;
$data_dir = $value if $override eq 'data_dir';
$module_dir = $value if $override eq 'module_dir';
$plugin_dir = $value if $override eq 'plugin_dir';
}
}
# check command-line arguments for registry overrides
foreach my $arg (@ARGV) {
next if $arg =~ m/^-?(?:general\.)?(?:config|data|module|plugin)_dir=.*$/; # already processed
my ($item, $value) = split /=/, $arg, 2;
if (not defined $item or not defined $value) {
print STDERR "Fatal error: unknown argument `$arg`; arguments must be in the form of `section.key=value` (e.g.: irc.botnick=newnick)\n";
exit;
}
my ($section, $key) = split /\./, $item, 2;
if (not defined $section or not defined $key) {
print STDERR "Fatal error: bad argument `$arg`; registry entries must be in the form of section.key (e.g.: irc.botnick)\n";
exit;
}
$section =~ s/^-//; # remove a leading - to allow arguments like -irc.botnick due to habitual use of -args
$self->{overrides}->{"$section.$key"} = $value;
}
# let modules register signal handlers
$self->{atexit} = PBot::Registerable->new(%conf, pbot => $self);
$self->register_signal_handlers;
# create logger
$self->{logger} = PBot::Logger->new(pbot => $self, filename => "$data_dir/log/log", %conf);
# make sure the environment is sane
if (not -d $data_dir) {
$self->{logger}->log("Data directory ($data_dir) does not exist; aborting...\n");
exit;
}
if (not -d $module_dir) {
$self->{logger}->log("Modules directory ($module_dir) does not exist; aborting...\n");
exit;
}
if (not -d $plugin_dir) {
$self->{logger}->log("Plugins directory ($plugin_dir) does not exist; aborting...\n");
exit;
}
# then capabilities so commands can add new capabilities
$self->{capabilities} = PBot::Capabilities->new(pbot => $self, filename => "$data_dir/capabilities", %conf);
# then commands so the modules can register new commands
$self->{commands} = PBot::Commands->new(pbot => $self, filename => "$data_dir/commands", %conf);
# add some commands
$self->{commands}->register(sub { $self->listcmd(@_) }, "list");
$self->{commands}->register(sub { $self->ack_die(@_) }, "die", 1);
$self->{commands}->register(sub { $self->export(@_) }, "export", 1);
$self->{commands}->register(sub { $self->reload(@_) }, "reload", 1);
$self->{commands}->register(sub { $self->evalcmd(@_) }, "eval", 1);
$self->{commands}->register(sub { $self->sl(@_) }, "sl", 1);
# add 'cap' capability command
$self->{commands}->register(sub { $self->{capabilities}->capcmd(@_) }, "cap");
# prepare the version
$self->{version} = PBot::VERSION->new(pbot => $self, %conf);
$self->{logger}->log($self->{version}->version . "\n");
$self->{logger}->log("Args: @ARGV\n") if @ARGV;
# log the configured paths
$self->{logger}->log("data_dir: $data_dir\n");
$self->{logger}->log("module_dir: $module_dir\n");
$self->{logger}->log("plugin_dir: $plugin_dir\n");
$self->{timer} = PBot::Timer->new(pbot => $self, timeout => 10, name => 'PBot Timer', %conf);
$self->{modules} = PBot::Modules->new(pbot => $self, %conf);
$self->{functions} = PBot::Functions->new(pbot => $self, %conf);
$self->{refresher} = PBot::Refresher->new(pbot => $self);
# create registry and set some defaults
$self->{registry} = PBot::Registry->new(pbot => $self, filename => "$data_dir/registry", %conf);
$self->{registry}->add_default('text', 'general', 'data_dir', $data_dir);
$self->{registry}->add_default('text', 'general', 'module_dir', $module_dir);
$self->{registry}->add_default('text', 'general', 'plugin_dir', $plugin_dir);
$self->{registry}->add_default('text', 'general', 'trigger', $conf{trigger} // '!');
$self->{registry}->add_default('text', 'irc', 'debug', $conf{irc_debug} // 0);
$self->{registry}->add_default('text', 'irc', 'show_motd', $conf{show_motd} // 1);
$self->{registry}->add_default('text', 'irc', 'max_msg_len', $conf{max_msg_len} // 425);
$self->{registry}->add_default('text', 'irc', 'server', $conf{server} // "irc.freenode.net");
$self->{registry}->add_default('text', 'irc', 'port', $conf{port} // 6667);
$self->{registry}->add_default('text', 'irc', 'SSL', $conf{SSL} // 0);
$self->{registry}->add_default('text', 'irc', 'SSL_ca_file', $conf{SSL_ca_file} // 'none');
$self->{registry}->add_default('text', 'irc', 'SSL_ca_path', $conf{SSL_ca_path} // 'none');
$self->{registry}->add_default('text', 'irc', 'botnick', $conf{botnick} // "");
$self->{registry}->add_default('text', 'irc', 'username', $conf{username} // "pbot3");
$self->{registry}->add_default('text', 'irc', 'realname', $conf{realname} // "https://github.com/pragma-/pbot");
$self->{registry}->add_default('text', 'irc', 'identify_password', $conf{identify_password} // '');
$self->{registry}->add_default('text', 'irc', 'log_default_handler', 1);
$self->{registry}->set_default('irc', 'SSL_ca_file', 'private', 1);
$self->{registry}->set_default('irc', 'SSL_ca_path', 'private', 1);
$self->{registry}->set_default('irc', 'identify_password', 'private', 1);
# load existing registry entries from file (if exists) to overwrite defaults
if (-e $self->{registry}->{registry}->{filename}) { $self->{registry}->load; }
# update important paths
$self->{registry}->set('general', 'data_dir', 'value', $data_dir, 0, 1);
$self->{registry}->set('general', 'module_dir', 'value', $module_dir, 0, 1);
$self->{registry}->set('general', 'plugin_dir', 'value', $plugin_dir, 0, 1);
# override registry entries with command-line arguments, if any
foreach my $override (keys %{$self->{overrides}}) {
my ($section, $key) = split /\./, $override;
my $value = $self->{overrides}->{$override};
$self->{logger}->log("Overriding $section.$key to $value\n");
$self->{registry}->set($section, $key, 'value', $value, 0, 1);
}
# registry triggers fire when value changes
$self->{registry}->add_trigger('irc', 'botnick', sub { $self->change_botnick_trigger(@_) });
$self->{registry}->add_trigger('irc', 'debug', sub { $self->irc_debug_trigger(@_) });
# ensure user has attempted to configure the bot
if (not length $self->{registry}->get_value('irc', 'botnick')) {
$self->{logger}->log("Fatal error: IRC nickname not defined; please set registry key irc.botnick in $data_dir/registry to continue.\n");
exit;
}
$self->{event_dispatcher} = PBot::EventDispatcher->new(pbot => $self, %conf);
$self->{process_manager} = PBot::ProcessManager->new(pbot => $self, %conf);
$self->{irchandlers} = PBot::IRCHandlers->new(pbot => $self, %conf);
$self->{select_handler} = PBot::SelectHandler->new(pbot => $self, %conf);
$self->{users} = PBot::Users->new(pbot => $self, filename => "$data_dir/users", %conf);
$self->{stdin_reader} = PBot::StdinReader->new(pbot => $self, %conf);
$self->{bantracker} = PBot::BanTracker->new(pbot => $self, %conf);
$self->{lagchecker} = PBot::LagChecker->new(pbot => $self, %conf);
$self->{messagehistory} = PBot::MessageHistory->new(pbot => $self, filename => "$data_dir/message_history.sqlite3", %conf);
$self->{antiflood} = PBot::AntiFlood->new(pbot => $self, %conf);
$self->{antispam} = PBot::AntiSpam->new(pbot => $self, %conf);
$self->{ignorelist} = PBot::IgnoreList->new(pbot => $self, filename => "$data_dir/ignorelist", %conf);
$self->{blacklist} = PBot::BlackList->new(pbot => $self, filename => "$data_dir/blacklist", %conf);
$self->{irc} = PBot::IRC->new();
$self->{channels} = PBot::Channels->new(pbot => $self, filename => "$data_dir/channels", %conf);
$self->{chanops} = PBot::ChanOps->new(pbot => $self, %conf);
$self->{nicklist} = PBot::NickList->new(pbot => $self, %conf);
$self->{webpaste} = PBot::WebPaste->new(pbot => $self, %conf);
$self->{parsedate} = PBot::Utils::ParseDate->new(pbot => $self, %conf);
$self->{interpreter} = PBot::Interpreter->new(pbot => $self, %conf);
$self->{interpreter}->register(sub { $self->{commands}->interpreter(@_) });
$self->{interpreter}->register(sub { $self->{factoids}->interpreter(@_) });
$self->{factoids} = PBot::Factoids->new(pbot => $self, filename => "$data_dir/factoids.sqlite3", %conf);
$self->{plugins} = PBot::Plugins->new(pbot => $self, %conf);
# load available plugins
$self->{plugins}->autoload(%conf);
# give botowner all capabilities
$self->{capabilities}->rebuild_botowner_capabilities();
}
sub random_nick {
my ($self, $length) = @_;
$length //= 9;
my @chars = ("A" .. "Z", "a" .. "z", "0" .. "9");
my $nick = $chars[rand @chars - 10]; # nicks cannot start with a digit
$nick .= $chars[rand @chars] for 1 .. $length;
return $nick;
}
# TODO: add disconnect subroutine
sub connect {
my ($self, $server) = @_;
if ($self->{connected}) {
# TODO: disconnect, clean-up, etc
}
$server = $self->{registry}->get_value('irc', 'server') if not defined $server;
$self->{logger}->log("Connecting to $server ...\n");
while (
not $self->{conn} = $self->{irc}->newconn(
Nick => $self->{registry}->get_value('irc', 'randomize_nick') ? $self->random_nick : $self->{registry}->get_value('irc', 'botnick'),
Username => $self->{registry}->get_value('irc', 'username'),
Ircname => $self->{registry}->get_value('irc', 'realname'),
Server => $server,
Pacing => 1,
UTF8 => 1,
SSL => $self->{registry}->get_value('irc', 'SSL'),
SSL_ca_file => $self->{registry}->get_value('irc', 'SSL_ca_file'),
SSL_ca_path => $self->{registry}->get_value('irc', 'SSL_ca_path'),
Port => $self->{registry}->get_value('irc', 'port')
)
)
{
$self->{logger}->log("$0: Can't connect to $server:" . $self->{registry}->get_value('irc', 'port') . ". Retrying in 15 seconds...\n");
sleep 15;
}
$self->{connected} = 1;
# start timer once connected
$self->{timer}->start;
# set up handlers for the IRC engine
$self->{conn}->add_default_handler(sub { $self->{irchandlers}->default_handler(@_) }, 1);
$self->{conn}->add_handler([251, 252, 253, 254, 255, 302], sub { $self->{irchandlers}->on_init(@_) });
# ignore these events
$self->{conn}->add_handler(
[
'whoisserver',
'whoiscountry',
'whoischannels',
'whoisidle',
'motdstart',
'endofmotd',
'away',
'endofbanlist'
],
sub { }
);
}
#main loop
sub do_one_loop {
my $self = shift;
$self->{irc}->do_one_loop();
$self->{select_handler}->do_select();
}
sub start {
my $self = shift;
while (1) {
$self->connect() if not $self->{connected};
$self->do_one_loop() if $self->{connected};
}
}
sub register_signal_handlers {
my $self = shift;
$SIG{INT} = sub { $self->atexit; exit 0; };
}
sub atexit {
my $self = shift;
$self->{atexit}->execute_all;
alarm 0;
}
sub irc_debug_trigger {
my ($self, $section, $item, $newvalue) = @_;
$self->{irc}->debug($newvalue);
$self->{conn}->debug($newvalue) if $self->{connected};
}
sub change_botnick_trigger {
my ($self, $section, $item, $newvalue) = @_;
$self->{conn}->nick($newvalue) if $self->{connected};
}
sub listcmd {
my $self = shift;
my ($from, $nick, $user, $host, $arguments) = @_;
my $text;
my $usage = "Usage: list <modules|commands>";
if (not defined $arguments) { return $usage; }
if ($arguments =~ /^modules$/i) {
$text = "Loaded modules: ";
foreach my $channel (sort $self->{factoids}->{factoids}->get_keys) {
foreach my $command (sort $self->{factoids}->{factoids}->get_keys($channel)) {
next if $command eq '_name';
if ($self->{factoids}->{factoids}->get_data($channel, $command, 'type') eq 'module') {
$text .= $self->{factoids}->{factoids}->get_data($channel, $command, '_name') . ' ';
}
}
}
return $text;
}
if ($arguments =~ /^commands$/i) {
$text = "Registered commands: ";
foreach my $command (sort { $a->{name} cmp $b->{name} } @{$self->{commands}->{handlers}}) {
if ($command->{requires_cap}) { $text .= "+$command->{name} "; }
else { $text .= "$command->{name} "; }
}
return $text;
}
return $usage;
}
sub sl {
my $self = shift;
my ($from, $nick, $user, $host, $arguments) = @_;
return "Usage: sl <ircd command>" if not length $arguments;
$self->{conn}->sl($arguments);
return "";
}
sub ack_die {
my $self = shift;
my ($from, $nick, $user, $host, $arguments) = @_;
$self->{logger}->log("$nick!$user\@$host made me exit.\n");
$self->atexit();
$self->{conn}->privmsg($from, "Good-bye.") if defined $from;
$self->{conn}->quit("Departure requested.");
exit 0;
}
sub export {
my $self = shift;
my ($from, $nick, $user, $host, $arguments) = @_;
return "Usage: export <factoids>" if not defined $arguments;
if ($arguments =~ /^factoids$/i) { return $self->{factoids}->export_factoids; }
}
sub evalcmd {
my ($self, $from, $nick, $user, $host, $arguments) = @_;
$self->{logger}->log("[$from] $nick!$user\@$host Evaluating [$arguments]\n");
my $ret = '';
my $result = eval $arguments;
if ($@) {
if (length $result) { $ret .= "[Error: $@] "; }
else { $ret .= "Error: $@"; }
$ret =~ s/ at \(eval \d+\) line 1.//;
}
$result = 'Undefined.' if not defined $result;
$result = 'No output.' if not length $result;
return "/say $ret $result";
}
sub reload {
my $self = shift;
my ($from, $nick, $user, $host, $arguments) = @_;
my %reloadables = (
'capabilities' => sub {
$self->{capabilities}->{caps}->load;
return "Capabilities reloaded.";
},
'commands' => sub {
$self->{commands}->{metadata}->load;
return "Commands metadata reloaded.";
},
'blacklist' => sub {
$self->{blacklist}->load_blacklist;
return "Blacklist reloaded.";
},
'ban-exemptions' => sub {
$self->{antiflood}->{'ban-exemptions'}->load;
return "Ban exemptions reloaded.";
},
'ignores' => sub {
$self->{ignorelist}->{ignorelist}->load;
return "Ignore list reloaded.";
},
'users' => sub {
$self->{users}->load;
return "Users reloaded.";
},
'channels' => sub {
$self->{channels}->{channels}->load;
return "Channels reloaded.";
},
'bantimeouts' => sub {
$self->{timer}->dequeue_event('unban_timeout .*');
$self->{chanops}->{unban_timeout}->load;
$self->{chanops}->enqueue_unban_timeouts;
return "Ban timeouts reloaded.";
},
'mutetimeouts' => sub {
$self->{timer}->dequeue_event('unmute_timeout .*');
$self->{chanops}->{unmute_timeout}->load;
$self->{chanops}->enqueue_unmute_timeouts;
return "Mute timeouts reloaded.";
},
'registry' => sub {
$self->{registry}->load;
return "Registry reloaded.";
},
'factoids' => sub {
$self->{factoids}->load_factoids;
return "Factoids reloaded.";
}
);
if (not length $arguments or not exists $reloadables{$arguments}) {
my $usage = 'Usage: reload <';
$usage .= join '|', sort keys %reloadables;
$usage .= '>';
return $usage;
}
return $reloadables{$arguments}();
}
1;