includes/AjaxDispatcher.php

   1 <?php
   2
   3 if( !defined( 'MEDIAWIKI' ) )
   4         die( 1 );
   5
   6 if ( ! $wgUseAjax ) {
   7         die( 1 );
   8 }
   9
  10 require_once( 'AjaxFunctions.php' );
  11
  12 class AjaxDispatcher {
  13         var $mode;
  14         var $func_name;
  15         var $args;
  16
  17         function AjaxDispatcher() {
  18                 wfProfileIn( __METHOD__ );
  19
  20                 $this->mode = "";
  21
  22                 if (! empty($_GET["rs"])) {
  23                         $this->mode = "get";
  24                 }
  25
  26                 if (!empty($_POST["rs"])) {
  27                         $this->mode = "post";
  28                 }
  29
  30                 if ($this->mode == "get") {
  31                         $this->func_name = isset( $_GET["rs"] ) ? $_GET["rs"] : '';
  32                         if (! empty($_GET["rsargs"])) {
  33                                 $this->args = $_GET["rsargs"];
  34                         } else {
  35                                 $this->args = array();
  36                         }
  37                 } else {
  38                         $this->func_name = isset( $_POST["rs"] ) ? $_POST["rs"] : '';
  39                         if (! empty($_POST["rsargs"])) {
  40                                 $this->args = $_POST["rsargs"];
  41                         } else {
  42                                 $this->args = array();
  43                         }
  44                 }
  45                 wfProfileOut( __METHOD__ );
  46         }
  47
  48         function performAction() {
  49                 global $wgAjaxExportList, $wgOut;
  50
  51                 if ( empty( $this->mode ) ) {
  52                         return;
  53                 }
  54                 wfProfileIn( __METHOD__ );
  55
  56                 if (! in_array( $this->func_name, $wgAjaxExportList ) ) {
  57                         header( 'Status: 400 Bad Request', true, 400 );
  58                         print "unknown function " . htmlspecialchars( (string) $this->func_name );
  59                 } else {
  60                         try {
  61                                 $result = call_user_func_array($this->func_name, $this->args);
  62
  63                                 if ( $result === false || $result === NULL ) {
  64                                         header( 'Status: 500 Internal Error', true, 500 );
  65                                         echo "{$this->func_name} returned no data";
  66                                 }
  67                                 else {
  68                                         if ( is_string( $result ) ) {
  69                                                 $result= new AjaxResponse( $result );
  70                                         }
  71
  72                                         $result->sendHeaders();
  73                                         $result->printText();
  74                                 }
  75
  76                         } catch (Exception $e) {
  77                                 if (!headers_sent()) {
  78                                         header( 'Status: 500 Internal Error', true, 500 );
  79                                         print $e->getMessage();
  80                                 } else {
  81                                         print $e->getMessage();
  82                                 }
  83                         }
  84                 }
  85
  86                 wfProfileOut( __METHOD__ );
  87                 $wgOut = null;
  88         }
  89 }
  90
  91 ?>