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