trackback.php

   1 <?php
   2 /**
   3  * Provide functions to handle article trackbacks.
   4  * @file
   5  * @ingroup SpecialPage
   6  */
   7
   8 require_once( './includes/WebStart.php' );
   9
  10 class TrackBack {
  11
  12         private $r, $url, $title = null;
  13
  14         private function XMLsuccess() {
  15                 header( "Content-Type: application/xml; charset=utf-8" );
  16                 echo <<<XML
  17 <?xml version="1.0" encoding="utf-8"?>
  18 <response>
  19         <error>0</error>
  20 </response>
  21 XML;
  22                 exit;
  23         }
  24
  25         private function XMLerror( $err = "Invalid request." ) {
  26                 header( "HTTP/1.0 400 Bad Request" );
  27                 header( "Content-Type: application/xml; charset=utf-8" );
  28                 echo <<<XML
  29 <?xml version="1.0" encoding="utf-8"?>
  30 <response>
  31         <error>1</error>
  32         <message>Invalid request: $err</message>
  33 </response>
  34 XML;
  35                         exit;
  36         }
  37
  38         public function __construct() {
  39                 global $wgUseTrackbacks, $wgRequest;
  40
  41                 if( !$wgUseTrackbacks )
  42                         $this->XMLerror( "Trackbacks are disabled" );
  43
  44                 $this->r = $wgRequest;
  45
  46                 if( !$this->r->wasPosted() ) {
  47                         $this->XMLerror( "Must be posted" );
  48                 }
  49
  50                 $this->url = $wgRequest->getText( 'url' );
  51                 $article = $wgRequest->getText( 'article' );
  52
  53                 if( !$this->url || !$article ) {
  54                         $this->XMLerror( "Required field not specified" );
  55                 }
  56
  57                 $this->title = Title::newFromText( $article );
  58                 if( !$this->title || !$this->title->exists() ) {
  59                         $this->XMLerror( "Specified article does not exist." );
  60                 }
  61         }
  62
  63         public function write() {
  64                 $dbw = wfGetDB( DB_MASTER );
  65
  66                 $tbtitle = $this->r->getText( 'title' );
  67                 $tbex = $this->r->getText( 'excerpt' );
  68                 $tbname = $this->r->getText( 'blog_name' );
  69
  70                 $dbw->insert('trackbacks', array(
  71                         'tb_page'       => $this->title->getArticleID(),
  72                         'tb_title'      => $tbtitle,
  73                         'tb_url'        => $this->url,
  74                         'tb_ex'         => $tbex,
  75                         'tb_name'       => $tbname
  76                 ));
  77
  78                 $dbw->commit();
  79
  80                 $this->XMLsuccess();
  81         }
  82 }
  83
  84 $tb = new TrackBack();
  85 $tb->write();