irc/rc2irc.php

   1 <?php
   2
   3 $ircNick = "wikipedia_rc";
   4 $rooms = array("en" => 1, "fr" => 1, "de" => 1);
   5 $ircServer = "irc.freenode.net";
   6 $ircSockName = "tcp://$ircServer";
   7 $ircPort = 6667;
   8 $minDelay = 0.5;
   9 $ircReadTimeout = 200000; # us
  10 $ircWriteTimeout = 30; # s
  11 $fmB = chr(2);
  12 $fmU = chr(31);
  13 $queueId = 337055475;
  14 $maxMessageSize = 16384;
  15
  16 #-----------------------------------------------------------------------------
  17
  18 # Get queue
  19
  20 $ircPassword = mt_rand(0xffffffff);
  21 $hostname = getenv('SERVER_NAME');
  22
  23 $queue = msg_get_queue($queueId);
  24
  25 if ( !$queue ) {
  26         print "Could not open RC message queue\n";
  27         exit;
  28 }
  29 emptyQueue( $queue );
  30
  31 # Initialise the IRC connection
  32 $sockIRC = fsockopen( $ircSockName, $ircPort );
  33 if ( !$sockIRC ) {
  34         print "Could not open IRC connection\n";
  35         exit;
  36 }
  37 stream_set_timeout($sockIRC, 0, $ircWriteTimeout);
  38
  39 fwrite( $sockIRC,
  40         "PASS $ircPassword\r\n" .
  41         "NICK $ircNick\r\n" .
  42         "USER recentchanges $hostname $ircServer Wikipedia RC->IRC bot\r\n"
  43 );
  44
  45 foreach ( $rooms as $room => $v ) {
  46         joinRoom( $sockIRC, $room );
  47 }
  48
  49 $readObjs = array( $sockIRC, $queue );
  50
  51 # Main input loop
  52 $die = false;
  53 while ( !$die ) {
  54         # RC input
  55         $msgType = 0;
  56         $entry = false;
  57         if (!msg_receive($queue, 0, $msgType, $maxMessageSize, $entry, true, MSG_IPC_NOWAIT)) {
  58                 $entry = false;
  59         }
  60         if (is_array( $entry )) {
  61                 $out = getIrcOutput( $sockIRC, $entry );
  62                 fwrite( $sockIRC, $out );
  63         }
  64
  65         # IRC input
  66         stream_set_timeout($sockIRC, 0, $ircReadTimeout);
  67         $line = rtrim(fgets( $sockIRC ));
  68         stream_set_timeout($sockIRC, 0, $ircWriteTimeout);
  69         if ( $line ) {
  70                 $die = processIrcInput( $sockIRC, $line );
  71         }
  72 }
  73 exit();
  74
  75 #--------------------------------------------------------------
  76 function delayMin()
  77 {
  78         static $lastTime = 0;
  79         global $minDelay;
  80         if ( !$lastTime ) {
  81                 $lastTime = getMicroTime();
  82         }
  83         $curTime = getMicroTime();
  84         $timeDifference = $curTime - $lastTime;
  85         if ( $timeDifference < $minDelay ) {
  86                 usleep( ($minDelay - $timeDifference) *1000000 );
  87         }
  88         $lastTime = $curTime;
  89 }
  90
  91 function getMicroTime()
  92 {
  93         list($usec, $sec) = explode(" ",microtime());
  94         return ((float)$usec + (float)$sec);
  95 }
  96
  97 function getIrcOutput( $socket, $in )
  98 {
  99         global $rooms;
 100
 101         delayMin();
 102         $bad = array("\n", "\r");
 103         $empty = array("", "");
 104         $comment =  $in['comment'];
 105         $title = $in['prefixedDBkey'];
 106         $user = $in['userText'];
 107         $lastid = IntVal($in['lastOldid']);
 108         $flag = ($in['minor'] ? "M" : "") . ($in['new'] ? "N" : "");
 109         $lang = $in['lang'];
 110         if ( $lang == "w" ) {
 111                 $lang = "en";
 112         }
 113
 114         if ( !array_key_exists( $rooms, $lang ) ) {
 115                 return "";
 116         }
 117         $room = "#{$lang}rc.wikipedia";
 118
 119         if ( $in['new'] ) {
 120                 $url = "http://$lang.wikipedia.org/wiki/" . urlencode($title);
 121         } else {
 122                 $url = "http://$lang.wikipedia.org/w/wiki.phtml?title=" . urlencode($title) .
 123                         "&diff=0&oldid=$lastid";
 124         }
 125         $spaceTitle = str_replace("_", " ", $title);
 126
 127         $beep = "";
 128         if ( $patterns ) {
 129                 foreach ( $patterns as $pattern ) {
 130                         if ( preg_match( $pattern, $comment ) ) {
 131                                 $beep = chr(7);
 132                                 break;
 133                         }
 134                 }
 135         }
 136         if ( $comment !== "" ) {
 137                 $comment = "($comment)";
 138         }
 139
 140         $fullString = str_replace($bad, $empty,
 141                 "$beep$fmB$spaceTitle$fmB   $flag   $url   $user $comment");
 142         $fullString = "PRIVMSG $room :$fullString\r\n";
 143         return $fullString;
 144 }
 145
 146 function joinRoom( $sock, $room )
 147 {
 148         global $rooms;
 149         $rooms[$room] = 1;
 150         fwrite( $sock, "JOIN #{$room}rc.wikipedia\r\n" );
 151 }
 152
 153 function partRoom( $sock, $room )
 154 {
 155         global $rooms;
 156         unset( $rooms[$room] );
 157         fwrite( $sock, "PART #{$room}rc.wikipedia\r\n" );
 158 }
 159
 160 function processIrcInput( $sock, $line )
 161 {
 162         global $rooms;
 163
 164         $die = false;
 165         $args = explode( " ", $line );
 166
 167         if ( $args[0] == "PING" ) {
 168                 fwrite( $sock, "PONG {$args[1]}\r\n" );
 169         } elseif ( $args[0]{0} == ":" ) {
 170                 $name = array_shift( $args );
 171                 $name = substr($name, 1);
 172                 $cmd = array_shift( $args );
 173                 if ( $cmd == "PRIVMSG" ) {
 174                         $msgRoom = array_shift( $args );
 175                         if ( $args[0] == "die" ) {
 176                                 $die = true;
 177                         } elseif ( $args[0] == "join" ) {
 178                                 joinRoom( $args[1] );
 179                         } elseif ( $args[0] == "part" ) {
 180                                 partRoom( $args[1] );
 181                         }
 182                 }
 183         }
 184 }
 185
 186 function emptyQueue( $id )
 187 {
 188         while ( msg_receive($queue, 0, $msgType, $maxMessageSize, $entry, true, MSG_IPC_NOWAIT));
 189 }
 190
 191 ?>
 192