includes/api/ApiQueryFilearchive.php

   1 <?php
   2 /**
   3  * API for MediaWiki 1.12+
   4  *
   5  * Created on May 10, 2010
   6  *
   7  * Copyright © 2010 Sam Reed
   8  * Copyright © 2008 Vasiliev Victor vasilvv@gmail.com,
   9  * based on ApiQueryAllpages.php
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; if not, write to the Free Software Foundation, Inc.,
  23  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  24  * http://www.gnu.org/copyleft/gpl.html
  25  *
  26  * @file
  27  */
  28
  29 if ( !defined( 'MEDIAWIKI' ) ) {
  30         // Eclipse helper - will be ignored in production
  31         require_once( 'ApiQueryBase.php' );
  32 }
  33
  34 /**
  35  * Query module to enumerate all deleted files.
  36  *
  37  * @ingroup API
  38  */
  39 class ApiQueryFilearchive extends ApiQueryBase {
  40
  41         public function __construct( $query, $moduleName ) {
  42                 parent::__construct( $query, $moduleName, 'fa' );
  43         }
  44
  45         public function execute() {
  46                 global $wgUser;
  47                 // Before doing anything at all, let's check permissions
  48                 if ( !$wgUser->isAllowed( 'deletedhistory' ) ) {
  49                         $this->dieUsage( 'You don\'t have permission to view deleted file information', 'permissiondenied' );
  50                 }
  51
  52                 $db = $this->getDB();
  53
  54                 $params = $this->extractRequestParams();
  55
  56                 $prop = array_flip( $params['prop'] );
  57                 $fld_sha1 = isset( $prop['sha1'] );
  58                 $fld_timestamp = isset( $prop['timestamp'] );
  59                 $fld_user = isset( $prop['user'] );
  60                 $fld_size = isset( $prop['size'] );
  61                 $fld_dimensions = isset( $prop['dimensions'] );
  62                 $fld_description = isset( $prop['description'] );
  63                 $fld_mime = isset( $prop['mime'] );
  64                 $fld_metadata = isset( $prop['metadata'] );
  65                 $fld_bitdepth = isset( $prop['bitdepth'] );
  66
  67                 $this->addTables( 'filearchive' );
  68
  69                 $this->addFields( array( 'fa_name', 'fa_deleted' ) );
  70                 $this->addFieldsIf( 'fa_storage_key', $fld_sha1 );
  71                 $this->addFieldsIf( 'fa_timestamp', $fld_timestamp );
  72
  73                 if ( $fld_user ) {
  74                         $this->addFields( array( 'fa_user', 'fa_user_text' ) );
  75                 }
  76                 $this->addFieldsIf( 'fa_size', $fld_size );
  77
  78                 if ( $fld_dimensions ) {
  79                         $this->addFields( array( 'fa_height', 'fa_width' ) );
  80                 }
  81
  82                 $this->addFieldsIf( 'fa_description', $fld_description );
  83
  84                 if ( $fld_mime ) {
  85                         $this->addFields( array( 'fa_major_mime', 'fa_minor_mime' ) );
  86                 }
  87
  88                 $this->addFieldsIf( 'fa_metadata', $fld_metadata );
  89                 $this->addFieldsIf( 'fa_bits', $fld_bitdepth );
  90
  91                 // Image filters
  92                 $dir = ( $params['dir'] == 'descending' ? 'older' : 'newer' );
  93                 $from = ( is_null( $params['from'] ) ? null : $this->titlePartToKey( $params['from'] ) );
  94                 $this->addWhereRange( 'fa_name', $dir, $from, null );
  95                 if ( isset( $params['prefix'] ) ) {
  96                         $this->addWhere( 'fa_name' . $db->buildLike( $this->titlePartToKey( $params['prefix'] ), $db->anyString() ) );
  97                 }
  98
  99                 if ( !$wgUser->isAllowed( 'suppressrevision' ) ) {
 100                         // Filter out revisions that the user is not allowed to see. There
 101                         // is no way to indicate that we have skipped stuff because the
 102                         // continuation parameter is fa_name
 103
 104                         // Note that this field is unindexed. This should however not be
 105                         // a big problem as files with fa_deleted are rare
 106                         $this->addWhereFld( 'fa_deleted', 0 );
 107                 }
 108
 109
 110
 111                 $limit = $params['limit'];
 112                 $this->addOption( 'LIMIT', $limit + 1 );
 113                 $this->addOption( 'ORDER BY', 'fa_name' .
 114                                                 ( $params['dir'] == 'descending' ? ' DESC' : '' ) );
 115
 116                 $res = $this->select( __METHOD__ );
 117
 118                 $count = 0;
 119                 $result = $this->getResult();
 120                 foreach ( $res as $row ) {
 121                         if ( ++$count > $limit ) {
 122                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 123                                 // TODO: Security issue - if the user has no right to view next title, it will still be shown
 124                                 $this->setContinueEnumParameter( 'from', $this->keyToTitle( $row->fa_name ) );
 125                                 break;
 126                         }
 127
 128                         $file = array();
 129                         $file['name'] = $row->fa_name;
 130
 131                         if ( $fld_sha1 ) {
 132                                 $file['sha1'] = wfBaseConvert( $row->fa_storage_key, 36, 16, 40 );
 133                         }
 134                         if ( $fld_timestamp ) {
 135                                 $file['timestamp'] = wfTimestamp( TS_ISO_8601, $row->fa_timestamp );
 136                         }
 137                         if ( $fld_user ) {
 138                                 $file['userid'] = $row->fa_user;
 139                                 $file['user'] = $row->fa_user_text;
 140                         }
 141                         if ( $fld_size ) {
 142                                 $file['size'] = $row->fa_size;
 143                         }
 144                         if ( $fld_dimensions ) {
 145                                 $file['height'] = $row->fa_height;
 146                                 $file['width'] = $row->fa_width;
 147                         }
 148                         if ( $fld_description ) {
 149                                 $file['description'] = $row->fa_description;
 150                         }
 151                         if ( $fld_metadata ) {
 152                                 $file['metadata'] = $row->fa_metadata ? ApiQueryImageInfo::processMetaData( unserialize( $row->fa_metadata ), $result ) : null;
 153                         }
 154                         if ( $fld_bitdepth ) {
 155                                 $file['bitdepth'] = $row->fa_bits;
 156                         }
 157                         if ( $fld_mime ) {
 158                                 $file['mime'] = "$row->fa_major_mime/$row->fa_minor_mime";
 159                         }
 160
 161                         if ( $row->fa_deleted & File::DELETED_FILE ) {
 162                                 $file['filehidden'] = '';
 163                         }
 164                         if ( $row->fa_deleted & File::DELETED_COMMENT ) {
 165                                 $file['commenthidden'] = '';
 166                         }
 167                         if ( $row->fa_deleted & File::DELETED_USER ) {
 168                                 $file['userhidden'] = '';
 169                         }
 170                         if ( $row->fa_deleted & File::DELETED_RESTRICTED ) {
 171                                 // This file is deleted for normal admins
 172                                 $file['suppressed'] = '';
 173                         }
 174
 175
 176                         $fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $file );
 177                         if ( !$fit ) {
 178                                 $this->setContinueEnumParameter( 'from', $this->keyToTitle( $row->fa_name ) );
 179                                 break;
 180                         }
 181                 }
 182
 183                 $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'fa' );
 184         }
 185
 186         public function getAllowedParams() {
 187                 return array (
 188                         'from' => null,
 189                         'prefix' => null,
 190                         'limit' => array(
 191                                 ApiBase::PARAM_DFLT => 10,
 192                                 ApiBase::PARAM_TYPE => 'limit',
 193                                 ApiBase::PARAM_MIN => 1,
 194                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 195                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 196                         ),
 197                         'dir' => array(
 198                                 ApiBase::PARAM_DFLT => 'ascending',
 199                                 ApiBase::PARAM_TYPE => array(
 200                                         'ascending',
 201                                         'descending'
 202                                 )
 203                         ),
 204                         'prop' => array(
 205                                 ApiBase::PARAM_DFLT => 'timestamp',
 206                                 ApiBase::PARAM_ISMULTI => true,
 207                                 ApiBase::PARAM_TYPE => array(
 208                                         'sha1',
 209                                         'timestamp',
 210                                         'user',
 211                                         'size',
 212                                         'dimensions',
 213                                         'description',
 214                                         'mime',
 215                                         'metadata',
 216                                         'bitdepth'
 217                                 ),
 218                         ),
 219                 );
 220         }
 221
 222         public function getParamDescription() {
 223                 return array(
 224                         'from' => 'The image title to start enumerating from',
 225                         'prefix' => 'Search for all image titles that begin with this value',
 226                         'dir' => 'The direction in which to list',
 227                         'limit' => 'How many total images to return',
 228                         'prop' => array(
 229                                 'What image information to get:',
 230                                 ' sha1         - Adds sha1 hash for the image',
 231                                 ' timestamp    - Adds timestamp for the uploaded version',
 232                                 ' user         - Adds user who uploaded the image version',
 233                                 ' size         - Adds the size of the image in bytes',
 234                                 ' dimensions   - Adds the height and width of the image',
 235                                 ' description  - Adds description the image version',
 236                                 ' mime         - Adds MIME of the image',
 237                                 ' metadata     - Lists EXIF metadata for the version of the image',
 238                                 ' bitdepth     - Adds the bit depth of the version',
 239             ),
 240                 );
 241         }
 242
 243         public function getDescription() {
 244                 return 'Enumerate all deleted files sequentially';
 245         }
 246
 247         public function getPossibleErrors() {
 248                 return array_merge( parent::getPossibleErrors(), array(
 249                         array( 'code' => 'permissiondenied', 'info' => 'You don\'t have permission to view deleted file information' ),
 250                 ) );
 251         }
 252
 253         protected function getExamples() {
 254                 return array(
 255                         'Simple Use',
 256                         ' Show a list of all deleted files',
 257                         '  api.php?action=query&list=filearchive',
 258                 );
 259         }
 260
 261         public function getVersion() {
 262                 return __CLASS__ . ': $Id$';
 263         }
 264 }