includes/actions/RevertAction.php

   1 <?php
   2 /**
   3  * File reversion user interface
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  18  *
  19  * @file
  20  * @ingroup Actions
  21  * @ingroup Media
  22  * @author Alexandre Emsenhuber
  23  * @author Rob Church <robchur@gmail.com>
  24  */
  25
  26 /**
  27  * Dummy class for pages not in NS_FILE
  28  *
  29  * @ingroup Actions
  30  */
  31 class RevertAction extends Action {
  32
  33         public function getName() {
  34                 return 'revert';
  35         }
  36
  37         public function show() {
  38                 $this->getOutput()->showErrorPage( 'nosuchaction', 'nosuchactiontext' );
  39         }
  40
  41         public function execute() {
  42         }
  43 }
  44
  45 /**
  46  * Class for pages in NS_FILE
  47  *
  48  * @ingroup Actions
  49  */
  50 class RevertFileAction extends FormAction {
  51         /**
  52          * @var OldLocalFile
  53          */
  54         protected $oldFile;
  55
  56         public function getName() {
  57                 return 'revert';
  58         }
  59
  60         public function getRestriction() {
  61                 return 'upload';
  62         }
  63
  64         protected function checkCanExecute( User $user ) {
  65                 parent::checkCanExecute( $user );
  66
  67                 $oldimage = $this->getRequest()->getText( 'oldimage' );
  68                 if ( strlen( $oldimage ) < 16
  69                         || strpos( $oldimage, '/' ) !== false
  70                         || strpos( $oldimage, '\\' ) !== false
  71                 ) {
  72                         throw new ErrorPageError( 'internalerror', 'unexpected', array( 'oldimage', $oldimage ) );
  73                 }
  74
  75                 $this->oldFile = RepoGroup::singleton()->getLocalRepo()->newFromArchiveName(
  76                         $this->getTitle(),
  77                         $oldimage
  78                 );
  79
  80                 if ( !$this->oldFile->exists() ) {
  81                         throw new ErrorPageError( '', 'filerevert-badversion' );
  82                 }
  83         }
  84
  85         protected function alterForm( HTMLForm $form ) {
  86                 $form->setWrapperLegendMsg( 'filerevert-legend' );
  87                 $form->setSubmitTextMsg( 'filerevert-submit' );
  88                 $form->addHiddenField( 'oldimage', $this->getRequest()->getText( 'oldimage' ) );
  89                 $form->setTokenSalt( array( 'revert', $this->getTitle()->getPrefixedDBkey() ) );
  90         }
  91
  92         protected function getFormFields() {
  93                 global $wgContLang;
  94
  95                 $timestamp = $this->oldFile->getTimestamp();
  96
  97                 $user = $this->getUser();
  98                 $lang = $this->getLanguage();
  99                 $userDate = $lang->userDate( $timestamp, $user );
 100                 $userTime = $lang->userTime( $timestamp, $user );
 101                 $siteDate = $wgContLang->date( $timestamp, false, false );
 102                 $siteTime = $wgContLang->time( $timestamp, false, false );
 103
 104                 return array(
 105                         'intro' => array(
 106                                 'type' => 'info',
 107                                 'vertical-label' => true,
 108                                 'raw' => true,
 109                                 'default' => $this->msg( 'filerevert-intro',
 110                                         $this->getTitle()->getText(), $userDate, $userTime,
 111                                         wfExpandUrl(
 112                                                 $this->page->getFile()->getArchiveUrl( $this->getRequest()->getText( 'oldimage' ) ),
 113                                                 PROTO_CURRENT
 114                                         ) )->parseAsBlock()
 115                         ),
 116                         'comment' => array(
 117                                 'type' => 'text',
 118                                 'label-message' => 'filerevert-comment',
 119                                 'default' => $this->msg( 'filerevert-defaultcomment', $siteDate, $siteTime
 120                                         )->inContentLanguage()->text()
 121                         )
 122                 );
 123         }
 124
 125         public function onSubmit( $data ) {
 126                 $source = $this->page->getFile()->getArchiveVirtualUrl(
 127                         $this->getRequest()->getText( 'oldimage' )
 128                 );
 129                 $comment = $data['comment'];
 130
 131                 // TODO: Preserve file properties from database instead of reloading from file
 132                 return $this->page->getFile()->upload(
 133                         $source,
 134                         $comment,
 135                         $comment,
 136                         0,
 137                         false,
 138                         false,
 139                         $this->getUser()
 140                 );
 141         }
 142
 143         public function onSuccess() {
 144                 $timestamp = $this->oldFile->getTimestamp();
 145                 $user = $this->getUser();
 146                 $lang = $this->getLanguage();
 147                 $userDate = $lang->userDate( $timestamp, $user );
 148                 $userTime = $lang->userTime( $timestamp, $user );
 149
 150                 $this->getOutput()->addWikiMsg( 'filerevert-success', $this->getTitle()->getText(),
 151                         $userDate, $userTime,
 152                         wfExpandUrl( $this->page->getFile()->getArchiveUrl( $this->getRequest()->getText( 'oldimage' ) ),
 153                                 PROTO_CURRENT
 154                 ) );
 155                 $this->getOutput()->returnToMain( false, $this->getTitle() );
 156         }
 157
 158         protected function getPageTitle() {
 159                 return $this->msg( 'filerevert', $this->getTitle()->getText() );
 160         }
 161
 162         protected function getDescription() {
 163                 $this->getOutput()->addBacklinkSubtitle( $this->getTitle() );
 164
 165                 return '';
 166         }
 167 }