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 require_once( 'AjaxResponse.php' );
  12
  13 class AjaxDispatcher {
  14         var $mode;
  15         var $func_name;
  16         var $args;
  17
  18         function AjaxDispatcher() {
  19                 wfProfileIn( 'AjaxDispatcher::AjaxDispatcher' );
  20
  21                 $this->mode = "";
  22
  23                 if (! empty($_GET["rs"])) {
  24                         $this->mode = "get";
  25                 }
  26
  27                 if (!empty($_POST["rs"])) {
  28                         $this->mode = "post";
  29                 }
  30
  31                 if ($this->mode == "get") {
  32                         $this->func_name = $_GET["rs"];
  33                         if (! empty($_GET["rsargs"])) {
  34                                 $this->args = $_GET["rsargs"];
  35                         } else {
  36                                 $this->args = array();
  37                         }
  38                 } else {
  39                         $this->func_name = $_POST["rs"];
  40                         if (! empty($_POST["rsargs"])) {
  41                                 $this->args = $_POST["rsargs"];
  42                         } else {
  43                                 $this->args = array();
  44                         }
  45                 }
  46                 wfProfileOut( 'AjaxDispatcher::AjaxDispatcher' );
  47         }
  48
  49         function performAction() {
  50                 global $wgAjaxExportList, $wgOut;
  51
  52                 if ( empty( $this->mode ) ) {
  53                         return;
  54                 }
  55                 wfProfileIn( 'AjaxDispatcher::performAction' );
  56
  57                 if (! in_array( $this->func_name, $wgAjaxExportList ) ) {
  58                         header( 'Status: 400 Bad Request', true, 400 );
  59                         echo "unknown function {$this->func_name}";
  60                 } else {
  61                         try {
  62                                 $result = call_user_func_array($this->func_name, $this->args);
  63
  64                                 if ( $result === false || $result === NULL ) {
  65                                         header( 'Status: 500 Internal Error', true, 500 );
  66                                         echo "{$this->func_name} returned no data";
  67                                 }
  68                                 else {
  69                                         if ( is_string( $result ) ) {
  70                                                 $result= new AjaxResponse( $result );
  71                                         }
  72
  73                                         $result->sendHeaders();
  74                                         $result->printText();
  75                                 }
  76
  77                         } catch (Exception $e) {
  78                                 if (!headers_sent()) {
  79                                         header( 'Status: 500 Internal Error', true, 500 );
  80                                         print $e->getMessage();
  81                                 } else {
  82                                         print $e->getMessage();
  83                                 }
  84                         }
  85                 }
  86
  87                 wfProfileOut( 'AjaxDispatcher::performAction' );
  88                 $wgOut = null;
  89         }
  90 }
  91
  92 ?>