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( 'fa_name' );
  70                 $this->addFieldsIf( 'fa_storage_key', $fld_sha1 );
  71                 $this->addFieldsIf( 'fa_timestamp', $fld_timestamp );
  72                 $this->addFieldsIf( 'fa_user', $fld_user );
  73                 $this->addFieldsIf( 'fa_size', $fld_size );
  74
  75                 if ( $fld_dimensions ) {
  76                         $this->addFields( array( 'fa_height', 'fa_width' ) );
  77                 }
  78
  79                 $this->addFieldsIf( 'fa_description', $fld_description );
  80
  81                 if ( $fld_mime ) {
  82                         $this->addFields( array( 'fa_major_mime', 'fa_minor_mime' ) );
  83                 }
  84
  85                 $this->addFieldsIf( 'fa_metadata', $fld_metadata );
  86                 $this->addFieldsIf( 'fa_bits', $fld_bitdepth );
  87
  88                 // Image filters
  89                 $dir = ( $params['dir'] == 'descending' ? 'older' : 'newer' );
  90                 $from = ( is_null( $params['from'] ) ? null : $this->titlePartToKey( $params['from'] ) );
  91                 $this->addWhereRange( 'fa_name', $dir, $from, null );
  92                 if ( isset( $params['prefix'] ) )
  93                         $this->addWhere( 'fa_name' . $db->buildLike( $this->titlePartToKey( $params['prefix'] ), $db->anyString() ) );
  94
  95                 if ( isset( $params['minsize'] ) ) {
  96                         $this->addWhere( 'fa_size>=' . intval( $params['minsize'] ) );
  97                 }
  98
  99                 if ( isset( $params['maxsize'] ) ) {
 100                         $this->addWhere( 'fa_size<=' . intval( $params['maxsize'] ) );
 101                 }
 102
 103                 $sha1 = false;
 104                 if ( isset( $params['sha1'] ) ) {
 105                         $sha1 = wfBaseConvert( $params['sha1'], 16, 36, 31 );
 106                 } elseif ( isset( $params['sha1base36'] ) ) {
 107                         $sha1 = $params['sha1base36'];
 108                 }
 109                 if ( $sha1 ) {
 110                         $this->addWhere( 'fa_storage_key=' . $db->addQuotes( $sha1 ) );
 111                 }
 112
 113                 $limit = $params['limit'];
 114                 $this->addOption( 'LIMIT', $limit + 1 );
 115                 $this->addOption( 'ORDER BY', 'fa_name' .
 116                                                 ( $params['dir'] == 'descending' ? ' DESC' : '' ) );
 117
 118                 $res = $this->select( __METHOD__ );
 119
 120                 $count = 0;
 121                 $result = $this->getResult();
 122                 foreach ( $res as $row ) {
 123                         if ( ++$count > $limit ) {
 124                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 125                                 // TODO: Security issue - if the user has no right to view next title, it will still be shown
 126                                 $this->setContinueEnumParameter( 'from', $this->keyToTitle( $row->fa_name ) );
 127                                 break;
 128                         }
 129
 130                         $file = array();
 131                         $file['name'] = $row->fa_name;
 132
 133                         if ( $fld_sha1 ) {
 134                                 $file['sha1'] = wfBaseConvert( $row->fa_storage_key, 36, 16, 40 );
 135                         }
 136                         if ( $fld_timestamp ) {
 137                                 $file['timestamp'] = wfTimestamp( TS_ISO_8601, $row->fa_timestamp );
 138                         }
 139                         if ( $fld_user ) {
 140                                 $file['user'] = $row->fa_user;
 141                         }
 142                         if ( $fld_size ) {
 143                                 $file['size'] = $row->fa_size;
 144                         }
 145                         if ( $fld_dimensions ) {
 146                                 $file['height'] = $row->fa_height;
 147                                 $file['width'] = $row->fa_width;
 148                         }
 149                         if ( $fld_description ) {
 150                                 $file['description'] = $row->fa_description;
 151                         }
 152                         if ( $fld_metadata ) {
 153                                 $file['metadata'] = $row->fa_metadata ? ApiQueryImageInfo::processMetaData( unserialize( $row->fa_metadata ), $result ) : null;
 154                         }
 155                         if ( $fld_bitdepth ) {
 156                                 $file['bitdepth'] = $row->fa_bits;
 157                         }
 158                         if ( $fld_mime ) {
 159                                 $file['mime'] = "$row->fa_major_mime/$row->fa_minor_mime";
 160                         }
 161
 162                         $fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $file );
 163                         if ( !$fit ) {
 164                                 $this->setContinueEnumParameter( 'from', $this->keyToTitle( $row->fa_name ) );
 165                                 break;
 166                         }
 167                 }
 168
 169                 $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'fa' );
 170         }
 171
 172         public function getAllowedParams() {
 173                 return array (
 174                         'from' => null,
 175                         'prefix' => null,
 176                         'minsize' => array(
 177                                 ApiBase::PARAM_TYPE => 'integer',
 178                         ),
 179                         'maxsize' => array(
 180                                 ApiBase::PARAM_TYPE => 'integer',
 181                         ),
 182                         'limit' => array(
 183                                 ApiBase::PARAM_DFLT => 10,
 184                                 ApiBase::PARAM_TYPE => 'limit',
 185                                 ApiBase::PARAM_MIN => 1,
 186                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 187                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 188                         ),
 189                         'dir' => array(
 190                                 ApiBase::PARAM_DFLT => 'ascending',
 191                                 ApiBase::PARAM_TYPE => array(
 192                                         'ascending',
 193                                         'descending'
 194                                 )
 195                         ),
 196                         'sha1' => null,
 197                         'sha1base36' => null,
 198                         'prop' => array(
 199                                 ApiBase::PARAM_DFLT => 'timestamp',
 200                                 ApiBase::PARAM_ISMULTI => true,
 201                                 ApiBase::PARAM_TYPE => array(
 202                                         'sha1',
 203                                         'timestamp',
 204                                         'user',
 205                                         'size',
 206                                         'dimensions',
 207                                         'description',
 208                                         'mime',
 209                                         'metadata',
 210                                         'bitdepth'
 211                                 ),
 212                         ),
 213                 );
 214         }
 215
 216         public function getParamDescription() {
 217                 return array(
 218                         'from' => 'The image title to start enumerating from',
 219                         'prefix' => 'Search for all image titles that begin with this value',
 220                         'dir' => 'The direction in which to list',
 221                         'minsize' => 'Limit to images with at least this many bytes',
 222                         'maxsize' => 'Limit to images with at most this many bytes',
 223                         'limit' => 'How many total images to return',
 224                         'sha1' => "SHA1 hash of image. Overrides {$this->getModulePrefix()}sha1base36",
 225                         'sha1base36' => 'SHA1 hash of image in base 36 (used in MediaWiki)',
 226                         'prop' => array(
 227                                 'What image information to get:',
 228                                 ' sha1         - Adds SHA-1 hash for the image',
 229                                 ' timestamp    - Adds timestamp for the uploaded version',
 230                                 ' user         - Adds user for uploaded the image version',
 231                                 ' size         - Adds the size of the image in bytes',
 232                                 ' dimensions   - Adds the height and width of the image',
 233                                 ' description  - Adds description the image version',
 234                                 ' mime         - Adds MIME of the image',
 235                                 ' metadata     - Lists EXIF metadata for the version of the image',
 236                                 ' bitdepth     - Adds the bit depth of the version',
 237             ),
 238                 );
 239         }
 240
 241         public function getDescription() {
 242                 return 'Enumerate all deleted files sequentially';
 243         }
 244
 245         public function getPossibleErrors() {
 246                 return array_merge( parent::getPossibleErrors(), array(
 247                         array( 'code' => 'permissiondenied', 'info' => 'You don\'t have permission to view deleted file information' ),
 248                 ) );
 249         }
 250
 251         protected function getExamples() {
 252                 return array(
 253                         'Simple Use',
 254                         ' Show a list of all deleted files',
 255                         '  api.php?action=query&list=filearchive',
 256                 );
 257         }
 258
 259         public function getVersion() {
 260                 return __CLASS__ . ': $Id$';
 261         }
 262 }