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tircd.pl
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tircd.pl
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#!/usr/bin/perl
# tircd - An ircd proxy to the Twitter API
# Copyright (c) 2009 Chris Nelson <tircd@crazybrain.org>
# tircd is free software; you can redistribute it and/or modify it under the terms of either:
# a) the GNU General Public License as published by the Free Software Foundation
# b) the "Artistic License"
use strict;
use JSON::Any;
use Net::Twitter;
use Time::Local;
use File::Glob ':glob';
use IO::File;
use LWP::UserAgent;
use Storable;
use POE qw(Component::Server::TCP Filter::Stackable Filter::Map Filter::IRCD);
my $VERSION = 0.8;
#Do some sanity checks on the environment and warn if not what we want
if ($Net::Twitter::VERSION < 2.10) {
print "Warning: Your system has an old version of Net::Twitter. Please upgrade to the current version.\n";
}
my $j = JSON::Any->new;
if ($j->handlerType eq 'JSON::Syck') {
print "Warning: Your system is using JSON::Syck. This will cause problems with character encoding. Please install JSON::PP or JSON::XS.\n";
}
#load and parse our own very simple config file
#didn't want to introduce another module requirement to parse XML or a YAML file
my $config_file = '/etc/tircd.cfg';
if ($ARGV[0]) {
$config_file = $ARGV[0];
} elsif (-e 'tircd.cfg') {
$config_file = 'tircd.cfg';
} elsif (-e bsd_glob('~',GLOB_TILDE | GLOB_ERR).'/.tircd') {
$config_file = bsd_glob('~',GLOB_TILDE | GLOB_ERR).'/.tircd';
}
open(C,$config_file) || die("$0: Unable to load config file ($config_file): $!\n");
my %config = ();
while (<C>) {
chomp;
next if /^#/ || /^$/;
my ($key,$value) = split(/\s/,$_,2);
$config{$key} = $value;
}
close(C);
#config file backwards compatibility
$config{'timeline_count'} = 20 if !exists $config{'timeline_count'};
#storage for connected users
my %users;
#setup our filter to process the IRC messages, jacked from the Filter::IRCD docs
my $filter = POE::Filter::Stackable->new();
$filter->push( POE::Filter::Line->new( InputRegexp => '\015?\012', OutputLiteral => "\015\012" ));
#twitter's json feed escapes < and >, let's fix that
$filter->push( POE::Filter::Map->new(Code => sub {
local $_ = shift;
s/\<\;/\</g;
s/\>\;/\>/g;
s/\"\;/\"/g;
return $_;
}));
if ($config{'debug'} > 1) {
$filter->push(POE::Filter::IRCD->new(debug => 1));
} else {
$filter->push(POE::Filter::IRCD->new(debug => 0));
}
#if needed setup our logging sesstion
if ($config{'logtype'} ne 'none') {
POE::Session->create(
inline_states => {
_start => \&logger_setup,
log => \&logger_log
},
args => [$config{'logtype'},$config{'logfile'}]
);
}
#setup our 'irc server'
POE::Component::Server::TCP->new(
Alias => "tircd",
Address => $config{'address'},
Port => $config{'port'},
InlineStates => {
PASS => \&irc_pass,
NICK => \&irc_nick,
USER => \&irc_user,
MOTD => \&irc_motd,
MODE => \&irc_mode,
JOIN => \&irc_join,
PART => \&irc_part,
WHO => \&irc_who,
WHOIS => \&irc_whois,
PRIVMSG => \&irc_privmsg,
STATS => \&irc_stats,
INVITE => \&irc_invite,
KICK => \&irc_kick,
QUIT => \&irc_quit,
PING => \&irc_ping,
AWAY => \&irc_away,
TOPIC => \&irc_topic,
'#twitter' => \&channel_twitter,
server_reply => \&irc_reply,
user_msg => \&irc_user_msg,
twitter_api_error => \&twitter_api_error,
twitter_timeline => \&twitter_timeline,
twitter_direct_messages => \&twitter_direct_messages,
twitter_search => \&twitter_search,
login => \&tircd_login,
getfriend => \&tircd_getfriend,
remfriend => \&tircd_remfriend,
updatefriend => \&tircd_updatefriend,
getfollower => \&tircd_getfollower
},
ClientFilter => $filter,
ClientInput => \&irc_line,
ClientConnected => \&tircd_connect,
ClientDisconnected => \&tircd_cleanup,
Started => \&tircd_setup
);
$poe_kernel->run();
exit 0;
########## STARTUP FUNCTIONS BEGIN
sub tircd_setup {
$_[KERNEL]->call('logger','log',"tircd $VERSION started, using config from: $config_file.");
$_[KERNEL]->call('logger','log',"Listening on: $config{'address'}:$config{'port'}.");
}
#setup our logging session
sub logger_setup {
my ($kernel, $heap, $type, $file) = @_[KERNEL, HEAP, ARG0, ARG1];
$_[KERNEL]->alias_set('logger');
my $handle = 0;
if ($type eq 'file') {
$handle = IO::File->new(">>$file");
} elsif ($type eq 'stdout') {
$handle = \*STDOUT;
} elsif ($type eq 'stderr') {
$handle = \*STDERR;
}
if ($handle) {
#Win32 seems to blow up when trying to set FIONBIO on STDOUT/ERR
$heap->{'file'} = ($^O eq 'MSWin32' && $type ne 'file') ? $handle : POE::Wheel::ReadWrite->new( Handle => $handle );
}
}
########## 'INTERNAL' UTILITY FUNCTIONS
#log a message
sub logger_log {
my ($heap, $msg, $from) = @_[HEAP, ARG0, ARG1];
return if ! $heap->{'file'};
$from = "[$from] " if defined $from;
my $stamp = '['.localtime().'] ';
if (ref $heap->{'file'} eq 'POE::Wheel::ReadWrite') {
$heap->{'file'}->put("$stamp$from$msg");
} else {
$heap->{'file'}->print("$stamp$from$msg\n");
}
}
#trap twitter api errors
sub twitter_api_error {
my ($kernel,$heap, $msg) = @_[KERNEL, HEAP, ARG0];
if ($config{'debug'}) {
$kernel->post('logger','log',$heap->{'twitter'}->http_message.' '.$heap->{'twitter'}->http_code.' '.$heap->{'twitter'}->get_error,'debug/twitter_api_error');
}
$kernel->post('logger','log',$msg.' ('.$heap->{'twitter'}->http_code .' from Twitter API).',$heap->{'twitter_username'});
if ($heap->{'twitter'}->http_code == 400) {
$msg .= ' Twitter API limit reached.';
} else {
$msg .= ' Twitter Fail Whale.';
}
$kernel->yield('server_reply',461,'#twitter',$msg);
}
#update a friend's info in the heap
sub tircd_updatefriend {
my ($heap, $new) = @_[HEAP, ARG0];
foreach my $friend (@{$heap->{'friends'}}) {
if ($friend->{'id'} == $new->{'id'}) {
$friend = $new;
return 1;
}
}
return 0;
}
#check to see if a given friend exists, and return it
sub tircd_getfriend {
my ($heap, $target) = @_[HEAP, ARG0];
foreach my $friend (@{$heap->{'friends'}}) {
if ($friend->{'screen_name'} eq $target) {
return $friend;
}
}
return 0;
}
sub tircd_getfollower {
my ($heap, $target) = @_[HEAP, ARG0];
foreach my $follower (@{$heap->{'followers'}}) {
if ($follower->{'screen_name'} eq $target) {
return $follower;
}
}
return 0;
}
sub tircd_remfriend {
my ($heap, $target) = @_[HEAP, ARG0];
my @tmp = ();
foreach my $friend (@{$heap->{'friends'}}) {
if ($friend->{'screen_name'} ne $target) {
push(@tmp,$friend);
}
}
$heap->{'friends'} = \@tmp;
}
#called once we have a user/pass, attempts to auth with twitter
sub tircd_login {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
if ($heap->{'twitter'}) { #make sure we aren't called twice
return;
}
#start up the twitter interface, and see if we can connect with the given NICK/PASS INFO
my $twitter = Net::Twitter->new(username => $heap->{'twitter_username'}, password => $heap->{'password'}, source => 'tircd');
if (!eval { $twitter->verify_credentials() }) {
$kernel->post('logger','log','Unable to login to Twitter with the supplied credentials.',$heap->{'twitter_username'});
$kernel->yield('server_reply',462,'Unable to login to Twitter with the supplied credentials.');
$kernel->yield('shutdown'); #disconnect 'em if we cant
return;
}
$kernel->post('logger','log','Successfully authenticated with Twitter.',$heap->{'twitter_username'});
#stash the twitter object for use in the session
$heap->{'twitter'} = $twitter;
#stash the username in a list to keep 'em from rejoining
$users{$heap->{'twitter_username'}} = 1;
#load our configs from disk if they exist
$heap->{'config'} = eval {retrieve($config{'storage_path'} . '/' . $heap->{'twitter_username'} . '.config');};
$heap->{'channels'} = eval {retrieve($config{'storage_path'} . '/' . $heap->{'twitter_username'} . '.channels');};
my @user_settings = ('update_timeline','update_directs','timeline_count','long_messages','min_length','join_silent','filter_self','shorten_urls','convert_irc_replies');
if (!$heap->{'config'}) {
my %copy = %config;
$heap->{'config'} = \%copy;
}
foreach my $s (@user_settings) {
if (!$heap->{'config'}->{$s}) {
$heap->{'config'}->{$s} = $config{$s};
}
}
foreach my $k (keys %{$heap->{'config'}}) {
if (!grep($_ eq $k, @user_settings)) {
delete $heap->{'config'}->{$k};
}
}
if (!$heap->{'channels'}) {
$heap->{'channels'} = {};
}
#we need this for the tinyurl support and others
$heap->{'ua'} = LWP::UserAgent->new;
$heap->{'ua'}->timeout(10);
$heap->{'ua'}->env_proxy();
#some clients need this shit
$kernel->yield('server_reply','001',"Welcome to tircd $heap->{'irc_username'}");
$kernel->yield('server_reply','002',"Your host is tircd running version $VERSION");
$kernel->yield('server_reply','003',"This server was created just for you!");
$kernel->yield('server_reply','004',"tircd $VERSION i int");
#show 'em the motd
$kernel->yield('MOTD');
}
sub tircd_connect {
my ($kernel, $heap) = @_[KERNEL, HEAP];
$kernel->post('logger','log',$heap->{'remote_ip'}.' connected.');
$kernel->post('logger','log',$heap->{'twitter_username'}.' to be tried.');
}
sub tircd_cleanup {
my ($kernel, $heap) = @_[KERNEL, HEAP];
$kernel->post('logger','log',$heap->{'remote_ip'}.' disconnected.',$heap->{'twitter_username'});
#delete the username
delete $users{$heap->{'twitter_username'}};
#remove our timers so the session will die
$kernel->delay('twitter_timeline');
$kernel->delay('twitter_direct_messages');
#if defined, save our data for next time
if ($config{'storage_path'} && -d $config{'storage_path'} && -w $config{'storage_path'}) {
#mark all channels as not joined for the next reload
foreach my $chan (keys %{$heap->{'channels'}}) {
$heap->{'channels'}->{$chan}->{'joined'} = 0;
}
eval {store($heap->{'config'},$config{'storage_path'} . '/' . $heap->{'twitter_username'} . '.config');};
eval {store($heap->{'channels'},$config{'storage_path'} . '/' . $heap->{'twitter_username'} . '.channels');};
} else {
$kernel->post('logger','log','storage_path is not set or is not writable, not saving configuration.',$heap->{'twitter_username'});
}
$kernel->yield('shutdown');
}
########## 'INTERNAL' IRC I/O FUNCTIONS
#called everytime we get a line from an irc server
#trigger an event and move on, the ones we care about will get trapped
sub irc_line {
my ($kernel, $data) = @_[KERNEL, ARG0];
if ($config{'debug'}) {
if (!$data->{'params'}) {
$data->{'params'} = [];
}
$kernel->post('logger','log',$data->{'prefix'}.' '.$data->{'command'}.' '.join(' ',@{$data->{'params'}}),'debug/irc_line');
}
$kernel->yield($data->{'command'},$data);
}
#send a message that looks like it came from a user
sub irc_user_msg {
my ($kernel, $heap, $code, $username, @params) = @_[KERNEL, HEAP, ARG0, ARG1, ARG2..$#_];
foreach my $p (@params) { #fix multiline tweets, submitted a patch to Filter::IRCD to fix this in the long term
$p =~ s/\n/ /g;
}
if ($config{'debug'}) {
$kernel->post('logger','log',$username.' '.$code.' '.join(' ',@params),'debug/irc_user_msg');
}
$heap->{'client'}->put({
command => $code,
prefix => "$username!$username\@twitter",
params => \@params
});
}
#send a message that comes from the server
sub irc_reply {
my ($kernel, $heap, $code, @params) = @_[KERNEL, HEAP, ARG0, ARG1..$#_];
foreach my $p (@params) {
$p =~ s/\n/ /g;
}
if ($code ne 'PONG' && $code ne 'MODE' && $code != 436) {
unshift(@params,$heap->{'irc_username'}); #prepend the target username to the message;
}
if ($config{'debug'}) {
$kernel->post('logger','log',':tircd '.$code.' '.join(' ',@params),'debug/irc_reply');
}
$heap->{'client'}->put({
command => $code,
prefix => 'tircd',
params => \@params
});
}
########### IRC EVENT FUNCTIONS
sub irc_pass {
my ($heap, $data) = @_[HEAP, ARG0];
$heap->{'password'} = $data->{'params'}[0]; #stash the password for later
}
sub irc_nick {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
if ($heap->{'irc_username'}) { #if we've already got their nick, don't let them change it
$kernel->yield('server_reply',433,'Changing nicks once connected is not currently supported.');
return;
}
if (exists $users{$data->{'params'}[0]}) {
$kernel->yield('server_reply',436,$data->{'params'}[0],'You are already connected to Twitter with this username.');
$kernel->yield('shutdown');
return;
}
$heap->{'twitter_username'} = 'asheeshlaroia';
$heap->{'irc_username'} = 'paulproteus';
# $data->{'params'}[0]; #stash the username for later
if ($heap->{'twitter_username'} && $heap->{'password'} && !$heap->{'twitter'}) {
$kernel->yield('login');
}
}
sub irc_user {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
if ($heap->{'twitter_username'} && $heap->{'password'} && !$heap->{'twitter'}) {
$kernel->yield('login');
}
}
#return the MOTD
sub irc_motd {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
$kernel->yield('server_reply',375,'- tircd Message of the Day -');
my $ua = LWP::UserAgent->new;
$ua->timeout(5);
$ua->env_proxy();
my $res = $ua->get('http://tircd.googlecode.com/svn/trunk/motd.txt');
if (!$res->is_success) {
$kernel->yield('server_reply',372,"- Unable to get the MOTD.");
} else {
my @lines = split(/\n/,$res->content);
foreach my $line (@lines) {
$kernel->yield('server_reply',372,"- $line");
}
}
$kernel->yield('server_reply',376,'End of /MOTD command.');
}
sub irc_join {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
my @chans = split(/\,/,$data->{'params'}[0]);
foreach my $chan (@chans) {
$chan =~ s/\s//g;
#see if we've registered an event handler for a 'special channel' (currently only #twitter)
if ($kernel->call($_[SESSION],$chan,$chan)) {
next;
}
#we might have something saved already, if not prep a new channel
if (!exists $heap->{'channels'}->{$chan} ) {
$heap->{'channels'}->{$chan} = {};
$heap->{'channels'}->{$chan}->{'names'}->{$heap->{'irc_username'}} = '@';
}
$heap->{'channels'}->{$chan}->{'joined'} = 1;
#otherwise, prep a blank channel
$kernel->yield('user_msg','JOIN',$heap->{'irc_username'},$chan);
$kernel->yield('server_reply',332,$chan,"$chan");
$kernel->yield('server_reply',333,$chan,'tircd!tircd@tircd',time());
#send the /NAMES info
my $all_users = '';
foreach my $name (keys %{$heap->{'channels'}->{$chan}->{'names'}}) {
$all_users .= $heap->{'channels'}->{$chan}->{'names'}->{$name} . $name .' ';
}
$kernel->yield('server_reply',353,'=',$chan,$all_users);
$kernel->yield('server_reply',366,$chan,'End of /NAMES list');
#restart the searching
if ($heap->{'channels'}->{$chan}->{'topic'}) {
$kernel->yield('user_msg','TOPIC',$heap->{'twitter_username'},$chan,$heap->{'channels'}->{$chan}->{'topic'});
$kernel->yield('twitter_search',$chan);
}
}
}
sub irc_part {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
my $chan = $data->{'params'}[0];
if ($heap->{'channels'}->{$chan}->{'joined'}) {
delete $heap->{'channels'}->{$chan};
$kernel->yield('user_msg','PART',$heap->{'irc_username'},$chan);
} else {
$kernel->yield('server_reply',442,$chan,"You're not on that channel");
}
}
sub irc_mode { #ignore all mode requests except ban which is a block (send back the appropriate message to keep the client happy)
#this whole thing is messy as hell, need to refactor this function
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
my $target = $data->{'params'}[0];
my $mode = $data->{'params'}[1];
my $opts = $data->{'params'}[2];
#extract the nick from the banmask
my ($nick,$host) = split(/\!/,$opts,2);
$nick =~ s/\*//g;
if (!$nick) {
$host =~ s/\*//g;
if ($host =~ /(.*)\@twitter/) {
$nick = $1;
}
}
if ($target =~ /^\#/) {
if ($mode eq 'b') {
$kernel->yield('server_reply',368,$target,'End of channel ban list');
return;
}
if ($target eq '#twitter') {
if ($mode eq '+b' && $target eq '#twitter') {
my $user = eval { $heap->{'twitter'}->create_block($nick) };
if ($user) {
$kernel->yield('user_msg','MODE',$heap->{'irc_username'},$target,$mode,$opts);
} else {
if ($heap->{'twitter'}->http_code >= 400) {
$kernel->call($_[SESSION],'twitter_api_error','Unable to block user.');
} else {
$kernel->yield('server_reply',401,$nick,'No such nick/channel');
}
}
return;
} elsif ($mode eq '-b' && $target eq '#twitter') {
my $user = eval { $heap->{'twitter'}->destroy_block($nick) };
if ($user) {
$kernel->yield('user_msg','MODE',$heap->{'irc_username'},$target,$mode,$opts);
} else {
if ($heap->{'twitter'}->http_code >= 400) {
$kernel->call($_[SESSION],'twitter_api_error','Unable to unblock user.');
} else {
$kernel->yield('server_reply',401,$nick,'No such nick/channel');
}
}
return;
}
}
if (!$mode) {
$kernel->yield('server_reply',324,$target,"+t");
}
return;
}
$kernel->yield('user_msg','MODE',$heap->{'irc_username'},$target,'+i');
}
sub irc_who {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
my $target = $data->{'params'}[0];
if ($target =~ /^\#/) {
if (exists $heap->{'channels'}->{$target}) {
foreach my $name (keys %{$heap->{'channels'}->{$target}->{'names'}}) {
if (my $friend = $kernel->call($_[SESSION],'getfriend',$name)) {
$kernel->yield('server_reply',352,$target,$name,'twitter','tircd',$name,'G'.$heap->{'channels'}->{$target}->{'names'}->{$name},"0 $friend->{'name'}");
}
}
}
} else { #only support a ghetto version of /who right now, /who ** and what not won't work
if (my $friend = $kernel->call($_[SESSION],'getfriend',$target)) {
$kernel->yield('server_reply',352,'*',$friend->{'screen_name'},'twitter','tircd',$friend->{'screen_name'}, "G","0 $friend->{'name'}");
}
}
$kernel->yield('server_reply',315,$target,'End of /WHO list');
}
sub irc_whois {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
my $target = $data->{'params'}[0];
my $friend = $kernel->call($_[SESSION],'getfriend',$target);
my $isfriend = 1;
if (!$friend) {#if we don't have their info already try to get it from twitter, and track it for the end of this function
$friend = eval { $heap->{'twitter'}->show_user($target) };
$isfriend = 0;
}
if ($heap->{'twitter'}->http_code == 404) {
$kernel->yield('server_reply',402,$target,'No such server');
return;
}
if (!$friend && $heap->{'twitter'}->http_code >= 400) {
$kernel->call($_[SESSION],'twitter_api_error','Unable to get user information.');
return;
}
if ($friend) {
$kernel->post('logger','log',"Received user information for $target from Twitter.",$heap->{'twitter_username'});
$kernel->yield('server_reply',311,$target,$target,'twitter','*',$friend->{'name'});
#send a bunch of 301s to convey all the twitter info, not sure if this is totally legit, but the clients I tested with seem ok with it
if ($friend->{'location'}) {
$kernel->yield('server_reply',301,$target,"Location: $friend->{'location'}");
}
if ($friend->{'url'}) {
$kernel->yield('server_reply',301,$target,"Web: $friend->{'url'}");
}
if ($friend->{'description'}) {
$kernel->yield('server_reply',301,$target,"Bio: $friend->{'description'}");
}
if ($friend->{'status'}->{'text'}) {
$kernel->yield('server_reply',301,$target,"Last Update: ".$friend->{'status'}->{'text'});
}
if ($target eq $heap->{'twitter_username'}) { #if it's us, then add the rate limit info to
my $rate = eval { $heap->{'twitter'}->rate_limit_status() };
$kernel->yield('server_reply',301,$target,'API Usage: '.($rate->{'hourly_limit'}-$rate->{'remaining_hits'})." of $rate->{'hourly_limit'} calls used.");
$kernel->post('logger','log','Current API usage: '.($rate->{'hourly_limit'}-$rate->{'remaining_hits'})." of $rate->{'hourly_limit'}",$heap->{'twitter_username'});
}
#treat their twitter client as the server
my $server; my $info;
if ($friend->{'status'}->{'source'} =~ /\<a href="(.*)"\>(.*)\<\/a\>/) { #not sure this regex will work in all cases
$server = $2;
$info = $1;
} else {
$server = 'web';
$info = 'http://www.twitter.com/';
}
$kernel->yield('server_reply',312,$target,$server,$info);
#set their idle time, to the time since last message (if we have one, the api won't return the most recent message for users who haven't updated in a long time)
my $diff = 0;
my %mon2num = qw(Jan 0 Feb 1 Mar 2 Apr 3 May 4 Jun 5 Jul 6 Aug 7 Sep 8 Oct 9 Nov 10 Dec 11);
if ($friend->{'status'}->{'created_at'} =~ /\w+ (\w+) (\d+) (\d+):(\d+):(\d+) [+|-]\d+ (\d+)/) {
my $date = timegm($5,$4,$3,$2,$mon2num{$1},$6);
$diff = time()-$date;
}
$kernel->yield('server_reply',317,$target,$diff,'seconds idle');
my $all_chans = '';
foreach my $chan (keys %{$heap->{'channels'}}) {
if (exists $heap->{'channels'}->{$chan}->{'names'}->{$friend->{'screen_name'}}) {
$all_chans .= $heap->{'channels'}->{$chan}->{'names'}->{$friend->{'screen_name'}}."$chan ";
}
}
if ($all_chans ne '') {
$kernel->yield('server_reply',319,$target,$all_chans);
}
}
$kernel->yield('server_reply',318,$target,'End of /WHOIS list');
}
sub irc_stats {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
my $key = $data->{'params'}[0];
my $val = $data->{'params'}[1];
$key = '--' if (!$key || $key eq 'm');
if ($key eq '--') {
$kernel->yield('server_reply',212,$key,"Current config settings:");
foreach my $k (sort keys %{$heap->{'config'}}) {
$kernel->yield('server_reply',212,$key," $k: ".$heap->{'config'}->{$k});
}
$kernel->yield('server_reply',212,$key,"Use '/stats <key> <value>' to change a setting.");
$kernel->yield('server_reply',212,$key,"Example: /stats join_silent 1");
} else {
if (exists $heap->{'config'}->{$key}) {
$heap->{'config'}->{$key} = $val;
$kernel->yield('server_reply',212,$key,"set to $val");
}
}
$kernel->yield('server_reply',219,$key,'End of /STATS request');
}
sub irc_privmsg {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
my $target = $data->{'params'}[0];
my $msg = $data->{'params'}[1];
#handle /me or ACTION requests properly
#this begins the slipperly slope of manipulating user input
$msg =~ s/\001ACTION (.*)\001/\*$1\*/;
if ($heap->{'config'}->{'long_messages'} eq 'split' && length($msg) > 140) {
my @parts = $msg =~ /(.{1,140})/g;
if (length($parts[$#parts]) < $heap->{'config'}->{'min_length'}) {
$kernel->yield('server_reply',404,$target,"The last message would only be ".length($parts[$#parts]).' characters long. Your message was not sent.');
return;
}
#if we got this far, recue the split messages
foreach my $part (@parts) {
$data->{'params'}[1] = $part;
$kernel->call($_[SESSION],'PRIVMSG',$data);
}
return;
}
if ($target =~ /^#/) {
if (!exists $heap->{'channels'}->{$target}) {
$kernel->yield('server_reply',404,$target,'Cannot send to channel');
return;
} else {
$target = '#twitter'; #we want to force all topic changes and what not into twitter for now
}
#shorten the URL
if (eval("require URI::Find;") && $heap->{'config'}->{'shorten_urls'}) {
my $finder = URI::Find->new(sub {
my $uriobj = shift;
my $uri = shift;
if ($uri !~ /^http:/) {
return $uri;
}
my $res = $heap->{'ua'}->get("http://tinyurl.com/api-create.php?url=$uri");
if ($res->is_success) {
return $res->content;
} else {
return $uri;
}
});
$finder->find(\$msg);
}
#Tweak the @replies
if ($msg =~ /^(.*?)\: / && $heap->{'config'}->{'convert_irc_replies'}) {
my $tnick = $1;
if (exists $heap->{'channels'}->{'#twitter'}->{'names'}->{$tnick}) {
$msg =~ s/^(.*?)\: /\@$1 /;
}
}
#warn if asked and the message is too long after fucking with it
if ($heap->{'config'}->{'long_messages'} eq 'warn' && length($msg) > 140) {
$kernel->yield('server_reply',404,$target,'Your message is '.length($msg).' characters long. Your message was not sent.');
return;
}
#in a channel, this an update
my $update = eval { $heap->{'twitter'}->update($msg) };
if (!$update && $heap->{'twitter'}->http_code >= 400) {
$kernel->call($_[SESSION],'twitter_api_error','Unable to update status.');
return;
}
$msg = $update->{'text'};
#update our own friend record
my $me = $kernel->call($_[SESSION],'getfriend',$heap->{'twitter_username'});
$me = $update->{'user'};
$me->{'status'} = $update;
$kernel->call($_[SESSION],'updatefriend',$me);
#keep the topic updated with our latest tweet
$kernel->yield('user_msg','TOPIC',$heap->{'twitter_username'},$target,"$heap->{'twitter_username'}'s last update: $msg");
$kernel->post('logger','log','Updated status.',$heap->{'twitter_username'});
} else {
#private message, it's a dm
my $dm = eval { $heap->{'twitter'}->new_direct_message({user => $target, text => $msg}) };
if (!$dm) {
$kernel->yield('server_reply',401,$target,"Unable to send direct message. Perhaps $target isn't following you?");
$kernel->post('logger','log',"Unable to send direct message to $target",$heap->{'twitter_username'});
} else {
$kernel->post('logger','log',"Sent direct message to $target",$heap->{'twitter_username'});
}
}
}
#allow the user to follow new users by adding them to the channel
sub irc_invite {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
my $target = $data->{'params'}[0];
my $chan = $data->{'params'}[1];
if (!$heap->{'channels'}->{$chan}->{'joined'}) {
$kernel->yield('server_reply',442,$chan,"You're not on that channel");
return;
}
if (exists $heap->{'channels'}->{$chan}->{'names'}->{$target}) {
$kernel->yield('server_reply',443,$target,$chan,'is already on channel');
return;
}
if ($chan ne '#twitter') { #if it's not our main channel, just fake the user in, if we already follow them
if (exists $heap->{'channels'}->{'#twitter'}->{'names'}->{$target}) {
$heap->{'channels'}->{$chan}->{'names'}->{$target} = $heap->{'channels'}->{'#twitter'}->{'names'}->{$target};
$kernel->yield('server_reply',341,$target,$chan);
$kernel->yield('user_msg','JOIN',$target,$chan);
if ($heap->{'channels'}->{$chan}->{'names'}->{$target} ne '') {
$kernel->yield('server_reply','MODE',$chan,'+v',$target);
}
} else {
$kernel->yield('server_reply',481,"You must invite the user to the #twitter channel first.");
}
return;
}
#if it's the main channel, we'll start following them on twitter
my $user = eval { $heap->{'twitter'}->create_friend({id => $target}) };
if ($user) {
if (!$user->{'protected'}) {
#if the user isn't protected, and we are following them now, then have 'em 'JOIN' the channel
push(@{$heap->{'friends'}},$user);
$kernel->yield('server_reply',341,$user->{'screen_name'},$chan);
$kernel->yield('user_msg','JOIN',$user->{'screen_name'},$chan);
$kernel->post('logger','log',"Started following $target",$heap->{'twitter_username'});
if ($kernel->call($_[SESSION],'getfollower',$user->{'screen_name'})) {
$heap->{'channels'}->{$chan}->{'names'}->{$target} = '+';
$kernel->yield('server_reply','MODE',$chan,'+v',$target);
} else {
$heap->{'channels'}->{$chan}->{'names'}->{$target} = '';
}
} else {
#show a note if they are protected and we are waiting
#this should technically be a 482, but some clients were exiting the channel for some reason
$kernel->yield('server_reply',481,"$target\'s updates are protected. Request to follow has been sent.");
$kernel->post('logger','log',"Sent request to follow $target",$heap->{'twitter_username'});
}
} else {
if ($heap->{'twitter'}->http_code >= 400 && $heap->{'twitter'}->http_code != 403) {
$kernel->call($_[SESSION],'twitter_api_error','Unable to follow user.');
} else {
$kernel->yield('server_reply',401,$target,'No such nick/channel');
$kernel->post('logger','log',"Attempted to follow non-existant user $target",$heap->{'twitter_username'});
}
}
}
#allow a user to unfollow/leave a user by kicking them from the channel
sub irc_kick {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
my $chan = $data->{'params'}[0];
my $target = $data->{'params'}[1];
if (!$heap->{'channels'}->{$chan}->{'joined'}) {
$kernel->yield('server_reply',442,$chan,"You're not on that channel");
return;
}
if (!exists $heap->{'channels'}->{$chan}->{'names'}->{$target}) {
$kernel->yield('server_reply',441,$target,$chan,"They aren't on that channel");
return;
}
if ($chan ne '#twitter') {
delete $heap->{'channels'}->{$chan}->{'names'}->{$target};
$kernel->yield('user_msg','KICK',$heap->{'irc_username'},$chan,$target,$target);
return;
}
my $result = eval { $heap->{'twitter'}->destroy_friend($target) };
if ($result) {
$kernel->call($_[SESSION],'remfriend',$target);
delete $heap->{'channels'}->{$chan}->{'names'}->{$target};
$kernel->yield('user_msg','KICK',$heap->{'irc_username'},$chan,$target,$target);
$kernel->post('logger','log',"Stoped following $target",$heap->{'twitter_username'});
} else {
if ($heap->{'twitter'}->http_code >= 400) {
$kernel->call($_[SESSION],'twitter_api_error','Unable to unfollow user.');
} else {
$kernel->yield('server_reply',441,$target,$chan,"They aren't on that channel");
$kernel->post('logger','log',"Attempted to unfollow user ($target) we weren't following",$heap->{'twitter_username'});
}
}
}
sub irc_ping {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
my $target = $data->{'params'}[0];
$kernel->yield('server_reply','PONG',$target);
}
sub irc_away {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
if ($data->{'params'}[0]) {
$kernel->yield('server_reply',306,'You have been marked as being away');
} else {
$kernel->yield('server_reply',305,'You are no longer marked as being away');
}
}
sub irc_topic {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
my $chan = $data->{'params'}[0];
my $topic = $data->{'params'}[1];
return if $chan eq '#twitter';
if (!$heap->{'channels'}->{$chan}->{'joined'}) {
$kernel->yield('server_reply',442,$chan,"You're not on that channel");
return;
}
$heap->{'channels'}->{$chan}->{'topic'} = $topic;
$heap->{'channels'}->{$chan}->{'search_since_id'} = 0;
$kernel->yield('user_msg','TOPIC',$heap->{'irc_username'},$chan,$topic);
$kernel->yield('twitter_search',$chan);
}
#shutdown the socket when the user quits
sub irc_quit {
my ($kernel, $heap, $data) = @_[KERNEL, HEAP, ARG0];
$kernel->yield('shutdown');
}
########### IRC 'SPECIAL CHANNELS'
sub channel_twitter {
my ($kernel,$heap,$chan) = @_[KERNEL, HEAP, ARG0];
#add our channel to the list
$heap->{'channels'}->{$chan} = {};
$heap->{'channels'}->{$chan}->{'joined'} = 1;
#get list of friends
my @friends = ();
my $page = 1;
while (my $f = eval { $heap->{'twitter'}->friends({page => $page}) }) {
last if @$f == 0;
push(@friends,@$f);
$page++;
}
#if we have no data, there was an error, or the user is a loser with no friends, eject 'em
if ($page == 1 && $heap->{'twitter'}->http_code >= 400) {
$kernel->call($_[SESSION],'twitter_api_error','Unable to get friends list.');
return;
}
#get list of friends
my @followers = ();
my $page = 1;
while (my $f = eval { $heap->{'twitter'}->followers({page => $page}) }) {
last if @$f == 0;
push(@followers,@$f);
$page++;
}
#alert this error, but don't end 'em
if ($page == 1 && $heap->{'twitter'}->http_code >= 400) {
$kernel->call($_[SESSION],'twitter_api_error','Unable to get followers list.');
}
#cache our friends and followers
$heap->{'friends'} = \@friends;
$heap->{'followers'} = \@followers;
$kernel->post('logger','log','Received friends list from Twitter, caching '.@{$heap->{'friends'}}.' friends.',$heap->{'twitter_username'});
$kernel->post('logger','log','Received followers list from Twitter, caching '.@{$heap->{'followers'}}.' followers.',$heap->{'twitter_username'});
#spoof the channel join
$kernel->yield('user_msg','JOIN',$heap->{'irc_username'},$chan);
$kernel->yield('server_reply',332,$chan,"$heap->{'twitter_username'}'s twitter");
$kernel->yield('server_reply',333,$chan,'tircd!tircd@tircd',time());
#the the list of our users for /NAMES
my $lastmsg = '';
foreach my $user (@{$heap->{'friends'}}) {
my $ov ='';
if ($user->{'screen_name'} eq $heap->{'irc_username'}) {
$lastmsg = $user->{'status'}->{'text'};
$ov = '@';
} elsif ($kernel->call($_[SESSION],'getfollower',$user->{'screen_name'})) {
$ov='+';
}
#keep a copy of who is in this channel
$heap->{'channels'}->{$chan}->{'names'}->{$user->{'screen_name'}} = $ov;
}
if (!$lastmsg) { #if we aren't already in the list, add us to the list for NAMES - AND go grab one tweet to put us in the array