includes/exception/PermissionsError.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  */
  20
  21 /**
  22  * Show an error when a user tries to do something they do not have the necessary
  23  * permissions for.
  24  *
  25  * @since 1.18
  26  * @ingroup Exception
  27  */
  28 class PermissionsError extends ErrorPageError {
  29         public $permission, $errors;
  30
  31         /**
  32          * @param string|null $permission A permission name or null if unknown
  33          * @param array $errors Error message keys or [key, param...] arrays; must not be empty if
  34          *   $permission is null
  35          * @throws \InvalidArgumentException
  36          */
  37         public function __construct( $permission, $errors = [] ) {
  38                 global $wgLang;
  39
  40                 if ( $permission === null && !$errors ) {
  41                         throw new \InvalidArgumentException( __METHOD__ .
  42                                 ': $permission and $errors cannot both be empty' );
  43                 }
  44
  45                 $this->permission = $permission;
  46
  47                 if ( !count( $errors ) ) {
  48                         $groups = [];
  49                         foreach ( User::getGroupsWithPermission( $this->permission ) as $group ) {
  50                                 $groups[] = UserGroupMembership::getLink( $group, RequestContext::getMain(), 'wiki' );
  51                         }
  52
  53                         if ( $groups ) {
  54                                 $errors[] = [ 'badaccess-groups', $wgLang->commaList( $groups ), count( $groups ) ];
  55                         } else {
  56                                 $errors[] = [ 'badaccess-group0' ];
  57                         }
  58                 }
  59
  60                 $this->errors = $errors;
  61
  62                 // Give the parent class something to work with
  63                 parent::__construct( 'permissionserrors', Message::newFromSpecifier( $errors[0] ) );
  64         }
  65
  66         public function report() {
  67                 global $wgOut;
  68
  69                 $wgOut->showPermissionsErrorPage( $this->errors, $this->permission );
  70                 $wgOut->output();
  71         }
  72 }