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 /**
  30  * Query module to enumerate all deleted files.
  31  *
  32  * @ingroup API
  33  */
  34 class ApiQueryFilearchive extends ApiQueryBase {
  35
  36         public function __construct( $query, $moduleName ) {
  37                 parent::__construct( $query, $moduleName, 'fa' );
  38         }
  39
  40         public function execute() {
  41                 $user = $this->getUser();
  42                 // Before doing anything at all, let's check permissions
  43                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
  44                         $this->dieUsage( 'You don\'t have permission to view deleted file information', 'permissiondenied' );
  45                 }
  46
  47                 $db = $this->getDB();
  48
  49                 $params = $this->extractRequestParams();
  50
  51                 $prop = array_flip( $params['prop'] );
  52                 $fld_sha1 = isset( $prop['sha1'] );
  53                 $fld_timestamp = isset( $prop['timestamp'] );
  54                 $fld_user = isset( $prop['user'] );
  55                 $fld_size = isset( $prop['size'] );
  56                 $fld_dimensions = isset( $prop['dimensions'] );
  57                 $fld_description = isset( $prop['description'] ) || isset( $prop['parseddescription'] );
  58                 $fld_mime = isset( $prop['mime'] );
  59                 $fld_mediatype = isset( $prop['mediatype'] );
  60                 $fld_metadata = isset( $prop['metadata'] );
  61                 $fld_bitdepth = isset( $prop['bitdepth'] );
  62
  63                 $this->addTables( 'filearchive' );
  64
  65                 $this->addFields( array( 'fa_name', 'fa_deleted' ) );
  66                 $this->addFieldsIf( 'fa_storage_key', $fld_sha1 );
  67                 $this->addFieldsIf( 'fa_timestamp', $fld_timestamp );
  68                 $this->addFieldsIf( array( 'fa_user', 'fa_user_text' ), $fld_user );
  69                 $this->addFieldsIf( array( 'fa_height', 'fa_width', 'fa_size' ), $fld_dimensions || $fld_size );
  70                 $this->addFieldsIf( 'fa_description', $fld_description );
  71                 $this->addFieldsIf( array( 'fa_major_mime', 'fa_minor_mime' ), $fld_mime );
  72                 $this->addFieldsIf( 'fa_media_type', $fld_mediatype );
  73                 $this->addFieldsIf( 'fa_metadata', $fld_metadata );
  74                 $this->addFieldsIf( 'fa_bits', $fld_bitdepth );
  75
  76                 if ( !is_null( $params['continue'] ) ) {
  77                         $cont = explode( '|', $params['continue'] );
  78                         if ( count( $cont ) != 1 ) {
  79                                 $this->dieUsage( "Invalid continue param. You should pass the " .
  80                                         "original value returned by the previous query", "_badcontinue" );
  81                         }
  82                         $op = $params['dir'] == 'descending' ? '<' : '>';
  83                         $cont_from = $db->addQuotes( $cont[0] );
  84                         $this->addWhere( "fa_name $op= $cont_from" );
  85                 }
  86
  87                 // Image filters
  88                 $dir = ( $params['dir'] == 'descending' ? 'older' : 'newer' );
  89                 $from = ( is_null( $params['from'] ) ? null : $this->titlePartToKey( $params['from'] ) );
  90                 if ( !is_null( $params['continue'] ) ) {
  91                         $from = $params['continue'];
  92                 }
  93                 $to = ( is_null( $params['to'] ) ? null : $this->titlePartToKey( $params['to'] ) );
  94                 $this->addWhereRange( 'fa_name', $dir, $from, $to );
  95                 if ( isset( $params['prefix'] ) ) {
  96                         $this->addWhere( 'fa_name' . $db->buildLike( $this->titlePartToKey( $params['prefix'] ), $db->anyString() ) );
  97                 }
  98
  99                 $sha1Set = isset( $params['sha1'] );
 100                 $sha1base36Set = isset( $params['sha1base36'] );
 101                 if ( $sha1Set || $sha1base36Set ) {
 102                         global $wgMiserMode;
 103                         if ( $wgMiserMode  ) {
 104                                 $this->dieUsage( 'Search by hash disabled in Miser Mode', 'hashsearchdisabled' );
 105                         }
 106
 107                         $sha1 = false;
 108                         if ( $sha1Set ) {
 109                                 if ( !$this->validateSha1Hash( $params['sha1'] ) ) {
 110                                         $this->dieUsage( 'The SHA1 hash provided is not valid', 'invalidsha1hash' );
 111                                 }
 112                                 $sha1 = wfBaseConvert( $params['sha1'], 16, 36, 31 );
 113                         } elseif ( $sha1base36Set ) {
 114                                 if ( !$this->validateSha1Base36Hash( $params['sha1base36'] ) ) {
 115                                         $this->dieUsage( 'The SHA1Base36 hash provided is not valid', 'invalidsha1base36hash' );
 116                                 }
 117                                 $sha1 = $params['sha1base36'];
 118                         }
 119                         if ( $sha1 ) {
 120                                 $this->addWhere( 'fa_storage_key ' . $db->buildLike( "{$sha1}.", $db->anyString() ) );
 121                         }
 122                 }
 123
 124                 if ( !$user->isAllowed( 'suppressrevision' ) ) {
 125                         // Filter out revisions that the user is not allowed to see. There
 126                         // is no way to indicate that we have skipped stuff because the
 127                         // continuation parameter is fa_name
 128
 129                         // Note that this field is unindexed. This should however not be
 130                         // a big problem as files with fa_deleted are rare
 131                         $this->addWhereFld( 'fa_deleted', 0 );
 132                 }
 133
 134                 $limit = $params['limit'];
 135                 $this->addOption( 'LIMIT', $limit + 1 );
 136                 $sort = ( $params['dir'] == 'descending' ? ' DESC' : '' );
 137                 $this->addOption( 'ORDER BY', 'fa_name' . $sort );
 138
 139                 $res = $this->select( __METHOD__ );
 140
 141                 $count = 0;
 142                 $result = $this->getResult();
 143                 foreach ( $res as $row ) {
 144                         if ( ++$count > $limit ) {
 145                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 146                                 $this->setContinueEnumParameter( 'continue', $row->fa_name );
 147                                 break;
 148                         }
 149
 150                         $file = array();
 151                         $file['name'] = $row->fa_name;
 152                         $title = Title::makeTitle( NS_FILE, $row->fa_name );
 153                         self::addTitleInfo( $file, $title );
 154
 155                         if ( $fld_sha1 ) {
 156                                 $file['sha1'] = wfBaseConvert( LocalRepo::getHashFromKey( $row->fa_storage_key ), 36, 16, 40 );
 157                         }
 158                         if ( $fld_timestamp ) {
 159                                 $file['timestamp'] = wfTimestamp( TS_ISO_8601, $row->fa_timestamp );
 160                         }
 161                         if ( $fld_user ) {
 162                                 $file['userid'] = $row->fa_user;
 163                                 $file['user'] = $row->fa_user_text;
 164                         }
 165                         if ( $fld_size || $fld_dimensions ) {
 166                                 $file['size'] = $row->fa_size;
 167
 168                                 $pageCount = ArchivedFile::newFromRow( $row )->pageCount();
 169                                 if ( $pageCount !== false ) {
 170                                         $vals['pagecount'] = $pageCount;
 171                                 }
 172
 173                                 $file['height'] = $row->fa_height;
 174                                 $file['width'] = $row->fa_width;
 175                         }
 176                         if ( $fld_description ) {
 177                                 $file['description'] = $row->fa_description;
 178                                 if ( isset( $prop['parseddescription'] ) ) {
 179                                         $file['parseddescription'] = Linker::formatComment(
 180                                                 $row->fa_description, $title );
 181                                 }
 182                         }
 183                         if ( $fld_mediatype ) {
 184                                 $file['mediatype'] = $row->fa_media_type;
 185                         }
 186                         if ( $fld_metadata ) {
 187                                 $file['metadata'] = $row->fa_metadata
 188                                                 ? ApiQueryImageInfo::processMetaData( unserialize( $row->fa_metadata ), $result )
 189                                                 : null;
 190                         }
 191                         if ( $fld_bitdepth ) {
 192                                 $file['bitdepth'] = $row->fa_bits;
 193                         }
 194                         if ( $fld_mime ) {
 195                                 $file['mime'] = "$row->fa_major_mime/$row->fa_minor_mime";
 196                         }
 197
 198                         if ( $row->fa_deleted & File::DELETED_FILE ) {
 199                                 $file['filehidden'] = '';
 200                         }
 201                         if ( $row->fa_deleted & File::DELETED_COMMENT ) {
 202                                 $file['commenthidden'] = '';
 203                         }
 204                         if ( $row->fa_deleted & File::DELETED_USER ) {
 205                                 $file['userhidden'] = '';
 206                         }
 207                         if ( $row->fa_deleted & File::DELETED_RESTRICTED ) {
 208                                 // This file is deleted for normal admins
 209                                 $file['suppressed'] = '';
 210                         }
 211
 212
 213                         $fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $file );
 214                         if ( !$fit ) {
 215                                 $this->setContinueEnumParameter( 'continue', $row->fa_name );
 216                                 break;
 217                         }
 218                 }
 219
 220                 $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'fa' );
 221         }
 222
 223         public function getAllowedParams() {
 224                 return array (
 225                         'from' => null,
 226                         'continue' => null,
 227                         'to' => null,
 228                         'prefix' => null,
 229                         'limit' => array(
 230                                 ApiBase::PARAM_DFLT => 10,
 231                                 ApiBase::PARAM_TYPE => 'limit',
 232                                 ApiBase::PARAM_MIN => 1,
 233                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 234                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 235                         ),
 236                         'dir' => array(
 237                                 ApiBase::PARAM_DFLT => 'ascending',
 238                                 ApiBase::PARAM_TYPE => array(
 239                                         'ascending',
 240                                         'descending'
 241                                 )
 242                         ),
 243                         'sha1' => null,
 244                         'sha1base36' => null,
 245                         'prop' => array(
 246                                 ApiBase::PARAM_DFLT => 'timestamp',
 247                                 ApiBase::PARAM_ISMULTI => true,
 248                                 ApiBase::PARAM_TYPE => array(
 249                                         'sha1',
 250                                         'timestamp',
 251                                         'user',
 252                                         'size',
 253                                         'dimensions',
 254                                         'description',
 255                                         'parseddescription',
 256                                         'mime',
 257                                         'mediatype',
 258                                         'metadata',
 259                                         'bitdepth'
 260                                 ),
 261                         ),
 262                 );
 263         }
 264
 265         public function getParamDescription() {
 266                 return array(
 267                         'from' => 'The image title to start enumerating from',
 268                         'continue' => 'When more results are available, use this to continue',
 269                         'to' => 'The image title to stop enumerating at',
 270                         'prefix' => 'Search for all image titles that begin with this value',
 271                         'dir' => 'The direction in which to list',
 272                         'limit' => 'How many images to return in total',
 273                         'sha1' => "SHA1 hash of image. Overrides {$this->getModulePrefix()}sha1base36. Disabled in Miser Mode",
 274                         'sha1base36' => 'SHA1 hash of image in base 36 (used in MediaWiki). Disabled in Miser Mode',
 275                         'prop' => array(
 276                                 'What image information to get:',
 277                                 ' sha1              - Adds SHA-1 hash for the image',
 278                                 ' timestamp         - Adds timestamp for the uploaded version',
 279                                 ' user              - Adds user who uploaded the image version',
 280                                 ' size              - Adds the size of the image in bytes and the height, width and page count (if applicable)',
 281                                 ' dimensions        - Alias for size',
 282                                 ' description       - Adds description the image version',
 283                                 ' parseddescription - Parse the description on the version',
 284                                 ' mime              - Adds MIME of the image',
 285                                 ' mediatype         - Adds the media type of the image',
 286                                 ' metadata          - Lists EXIF metadata for the version of the image',
 287                                 ' bitdepth          - Adds the bit depth of the version',
 288                         ),
 289                 );
 290         }
 291
 292         public function getResultProperties() {
 293                 return array(
 294                         '' => array(
 295                                 'name' => 'string',
 296                                 'ns' => 'namespace',
 297                                 'title' => 'string',
 298                                 'filehidden' => 'boolean',
 299                                 'commenthidden' => 'boolean',
 300                                 'userhidden' => 'boolean',
 301                                 'suppressed' => 'boolean'
 302                         ),
 303                         'sha1' => array(
 304                                 'sha1' => 'string'
 305                         ),
 306                         'timestamp' => array(
 307                                 'timestamp' => 'timestamp'
 308                         ),
 309                         'user' => array(
 310                                 'userid' => 'integer',
 311                                 'user' => 'string'
 312                         ),
 313                         'size' => array(
 314                                 'size' => 'integer',
 315                                 'pagecount' => array(
 316                                         ApiBase::PROP_TYPE => 'integer',
 317                                         ApiBase::PROP_NULLABLE => true
 318                                 ),
 319                                 'height' => 'integer',
 320                                 'width' => 'integer'
 321                         ),
 322                         'dimensions' => array(
 323                                 'size' => 'integer',
 324                                 'pagecount' => array(
 325                                         ApiBase::PROP_TYPE => 'integer',
 326                                         ApiBase::PROP_NULLABLE => true
 327                                 ),
 328                                 'height' => 'integer',
 329                                 'width' => 'integer'
 330                         ),
 331                         'description' => array(
 332                                 'description' => 'string'
 333                         ),
 334                         'parseddescription' => array(
 335                                 'description' => 'string',
 336                                 'parseddescription' => 'string'
 337                         ),
 338                         'metadata' => array(
 339                                 'metadata' => 'string'
 340                         ),
 341                         'bitdepth' => array(
 342                                 'bitdepth' => 'integer'
 343                         ),
 344                         'mime' => array(
 345                                 'mime' => 'string'
 346                         ),
 347                         'mediatype' => array(
 348                                 'mediatype' => 'string'
 349                         )
 350                 );
 351         }
 352
 353         public function getDescription() {
 354                 return 'Enumerate all deleted files sequentially';
 355         }
 356
 357         public function getPossibleErrors() {
 358                 return array_merge( parent::getPossibleErrors(), array(
 359                         array( 'code' => 'permissiondenied', 'info' => 'You don\'t have permission to view deleted file information' ),
 360                         array( 'code' => 'hashsearchdisabled', 'info' => 'Search by hash disabled in Miser Mode' ),
 361                         array( 'code' => 'invalidsha1hash', 'info' => 'The SHA1 hash provided is not valid' ),
 362                         array( 'code' => 'invalidsha1base36hash', 'info' => 'The SHA1Base36 hash provided is not valid' ),
 363                         array( 'code' => '_badcontinue', 'info' => 'Invalid continue param. You should pass the original value returned by the previous query' ),
 364                 ) );
 365         }
 366
 367         public function getExamples() {
 368                 return array(
 369                         'api.php?action=query&list=filearchive' => array(
 370                                 'Simple Use',
 371                                 'Show a list of all deleted files',
 372                         ),
 373                 );
 374         }
 375
 376         public function getVersion() {
 377                 return __CLASS__ . ': $Id$';
 378         }
 379 }