includes/AjaxDispatcher.php

   1 <?php
   2
   3 if( !defined( 'MEDIAWIKI' ) ) {
   4         die( 1 );
   5 }
   6
   7 if ( ! $wgUseAjax ) {
   8         die( 1 );
   9 }
  10
  11 require_once( 'AjaxFunctions.php' );
  12
  13 /**
  14  * Object-Oriented Ajax functions.
  15  * @addtogroup Ajax
  16  */
  17 class AjaxDispatcher {
  18         var $mode;
  19         var $func_name;
  20         var $args;
  21
  22         function __construct() {
  23                 wfProfileIn( __METHOD__ );
  24
  25                 $this->mode = "";
  26
  27                 if (! empty($_GET["rs"])) {
  28                         $this->mode = "get";
  29                 }
  30
  31                 if (!empty($_POST["rs"])) {
  32                         $this->mode = "post";
  33                 }
  34
  35                 if ($this->mode == "get") {
  36                         $this->func_name = isset( $_GET["rs"] ) ? $_GET["rs"] : '';
  37                         if (! empty($_GET["rsargs"])) {
  38                                 $this->args = $_GET["rsargs"];
  39                         } else {
  40                                 $this->args = array();
  41                         }
  42                 } else {
  43                         $this->func_name = isset( $_POST["rs"] ) ? $_POST["rs"] : '';
  44                         if (! empty($_POST["rsargs"])) {
  45                                 $this->args = $_POST["rsargs"];
  46                         } else {
  47                                 $this->args = array();
  48                         }
  49                 }
  50                 wfProfileOut( __METHOD__ );
  51         }
  52
  53         function performAction() {
  54                 global $wgAjaxExportList, $wgOut;
  55
  56                 if ( empty( $this->mode ) ) {
  57                         return;
  58                 }
  59                 wfProfileIn( __METHOD__ );
  60
  61                 if (! in_array( $this->func_name, $wgAjaxExportList ) ) {
  62                         wfHttpError( 400, 'Bad Request',
  63                                 "unknown function " . (string) $this->func_name );
  64                 } else {
  65                         try {
  66                                 $result = call_user_func_array($this->func_name, $this->args);
  67
  68                                 if ( $result === false || $result === NULL ) {
  69                                         wfHttpError( 500, 'Internal Error',
  70                                                 "{$this->func_name} returned no data" );
  71                                 }
  72                                 else {
  73                                         if ( is_string( $result ) ) {
  74                                                 $result= new AjaxResponse( $result );
  75                                         }
  76
  77                                         $result->sendHeaders();
  78                                         $result->printText();
  79                                 }
  80
  81                         } catch (Exception $e) {
  82                                 if (!headers_sent()) {
  83                                         wfHttpError( 500, 'Internal Error',
  84                                                 $e->getMessage() );
  85                                 } else {
  86                                         print $e->getMessage();
  87                                 }
  88                         }
  89                 }
  90
  91                 wfProfileOut( __METHOD__ );
  92                 $wgOut = null;
  93         }
  94 }
  95
  96 ?>