allow methods to generate a "user does not have required permissions" error by throwi...

[lhc/web/wiklou.git] / includes / Exception.php

diff --git a/includes/Exception.php b/includes/Exception.php
index 3151cd8..ea8986d 100644 (file)
--- a/includes/Exception.php
+++ b/includes/Exception.php
@@ -311,28 +311,65 @@ class FatalError extends MWException {
 }
 
 /**
+ * An error page which can definitely be safely rendered using the OutputPage
  * @ingroup Exception
  */
 class ErrorPageError extends MWException {
-       public $title, $msg;
+       public $title, $msg, $params;
 
        /**
         * Note: these arguments are keys into wfMsg(), not text!
         */
-       function __construct( $title, $msg ) {
+       function __construct( $title, $msg, $params = null ) {
                $this->title = $title;
                $this->msg = $msg;
+               $this->params = $params;
                parent::__construct( wfMsg( $msg ) );
        }
 
        function report() {
                global $wgOut;
 
-               $wgOut->showErrorPage( $this->title, $this->msg );
+               $wgOut->showErrorPage( $this->title, $this->msg, $this->params );
                $wgOut->output();
        }
 }
 
+/**
+ * Show an error when a user tries to do something they do not have the necessary
+ * permissions for.
+ */
+class PermissionsError extends ErrorPageError {
+       public $permission;
+
+       function __construct( $permission ) {
+               global $wgLang;
+
+               $this->permission = $permission;
+
+               $groups = array_map(
+                       array( 'User', 'makeGroupLinkWiki' ),
+                       User::getGroupsWithPermission( $this->permission )
+               );
+
+               if( $groups ) {
+                       parent::__construct(
+                               'badaccess',
+                               'badaccess-groups',
+                               array(
+                                       $wgLang->commaList( $groups ),
+                                       count( $groups )
+                               )
+                       );
+               } else {
+                       parent::__construct(
+                               'badaccess',
+                               'badaccess-group0'
+                       );
+               }
+       }
+}
+
 /**
  * Install an exception handler for MediaWiki exception types.
  */