includes/api/ApiQueryImageInfo.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on July 6, 2007
   6  *
   7  * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 /**
  28  * A query action to get image information and upload history.
  29  *
  30  * @ingroup API
  31  */
  32 class ApiQueryImageInfo extends ApiQueryBase {
  33         const TRANSFORM_LIMIT = 50;
  34         private static $transformCount = 0;
  35
  36         public function __construct( $query, $moduleName, $prefix = 'ii' ) {
  37                 // We allow a subclass to override the prefix, to create a related API module.
  38                 // Some other parts of MediaWiki construct this with a null $prefix, which used to be ignored when this only took two arguments
  39                 if ( is_null( $prefix ) ) {
  40                         $prefix = 'ii';
  41                 }
  42                 parent::__construct( $query, $moduleName, $prefix );
  43         }
  44
  45         public function execute() {
  46                 $params = $this->extractRequestParams();
  47
  48                 $prop = array_flip( $params['prop'] );
  49
  50                 $scale = $this->getScale( $params );
  51
  52                 $pageIds = $this->getPageSet()->getAllTitlesByNamespace();
  53                 if ( !empty( $pageIds[NS_FILE] ) ) {
  54                         $titles = array_keys( $pageIds[NS_FILE] );
  55                         asort( $titles ); // Ensure the order is always the same
  56
  57                         $fromTitle = null;
  58                         if ( !is_null( $params['continue'] ) ) {
  59                                 $cont = explode( '|', $params['continue'] );
  60                                 $this->dieContinueUsageIf( count( $cont ) != 2 );
  61                                 $fromTitle = strval( $cont[0] );
  62                                 $fromTimestamp = $cont[1];
  63                                 // Filter out any titles before $fromTitle
  64                                 foreach ( $titles as $key => $title ) {
  65                                         if ( $title < $fromTitle ) {
  66                                                 unset( $titles[$key] );
  67                                         } else {
  68                                                 break;
  69                                         }
  70                                 }
  71                         }
  72
  73                         $result = $this->getResult();
  74                         //search only inside the local repo
  75                         if ( $params['localonly'] ) {
  76                                 $images = RepoGroup::singleton()->getLocalRepo()->findFiles( $titles );
  77                         } else {
  78                                 $images = RepoGroup::singleton()->findFiles( $titles );
  79                         }
  80                         foreach ( $titles as $title ) {
  81                                 $pageId = $pageIds[NS_FILE][$title];
  82                                 $start = $title === $fromTitle ? $fromTimestamp : $params['start'];
  83
  84                                 if ( !isset( $images[$title] ) ) {
  85                                         $result->addValue(
  86                                                 array( 'query', 'pages', intval( $pageId ) ),
  87                                                 'imagerepository', ''
  88                                         );
  89                                         // The above can't fail because it doesn't increase the result size
  90                                         continue;
  91                                 }
  92
  93                                 /** @var $img File */
  94                                 $img = $images[$title];
  95
  96                                 if ( self::getTransformCount() >= self::TRANSFORM_LIMIT ) {
  97                                         if ( count( $pageIds[NS_FILE] ) == 1 ) {
  98                                                 // See the 'the user is screwed' comment below
  99                                                 $this->setContinueEnumParameter( 'start',
 100                                                         $start !== null ? $start : wfTimestamp( TS_ISO_8601, $img->getTimestamp() )
 101                                                 );
 102                                         } else {
 103                                                 $this->setContinueEnumParameter( 'continue',
 104                                                         $this->getContinueStr( $img, $start ) );
 105                                         }
 106                                         break;
 107                                 }
 108
 109                                 $fit = $result->addValue(
 110                                         array( 'query', 'pages', intval( $pageId ) ),
 111                                         'imagerepository', $img->getRepoName()
 112                                 );
 113                                 if ( !$fit ) {
 114                                         if ( count( $pageIds[NS_FILE] ) == 1 ) {
 115                                                 // The user is screwed. imageinfo can't be solely
 116                                                 // responsible for exceeding the limit in this case,
 117                                                 // so set a query-continue that just returns the same
 118                                                 // thing again. When the violating queries have been
 119                                                 // out-continued, the result will get through
 120                                                 $this->setContinueEnumParameter( 'start',
 121                                                         $start !== null ? $start : wfTimestamp( TS_ISO_8601, $img->getTimestamp() )
 122                                                 );
 123                                         } else {
 124                                                 $this->setContinueEnumParameter( 'continue',
 125                                                         $this->getContinueStr( $img, $start ) );
 126                                         }
 127                                         break;
 128                                 }
 129
 130                                 // Check if we can make the requested thumbnail, and get transform parameters.
 131                                 $finalThumbParams = $this->mergeThumbParams( $img, $scale, $params['urlparam'] );
 132
 133                                 // Get information about the current version first
 134                                 // Check that the current version is within the start-end boundaries
 135                                 $gotOne = false;
 136                                 if (
 137                                         ( is_null( $start ) || $img->getTimestamp() <= $start ) &&
 138                                         ( is_null( $params['end'] ) || $img->getTimestamp() >= $params['end'] )
 139                                 ) {
 140                                         $gotOne = true;
 141
 142                                         $fit = $this->addPageSubItem( $pageId,
 143                                                 self::getInfo( $img, $prop, $result,
 144                                                         $finalThumbParams, $params['metadataversion'] ) );
 145                                         if ( !$fit ) {
 146                                                 if ( count( $pageIds[NS_FILE] ) == 1 ) {
 147                                                         // See the 'the user is screwed' comment above
 148                                                         $this->setContinueEnumParameter( 'start',
 149                                                                 wfTimestamp( TS_ISO_8601, $img->getTimestamp() ) );
 150                                                 } else {
 151                                                         $this->setContinueEnumParameter( 'continue',
 152                                                                 $this->getContinueStr( $img ) );
 153                                                 }
 154                                                 break;
 155                                         }
 156                                 }
 157
 158                                 // Now get the old revisions
 159                                 // Get one more to facilitate query-continue functionality
 160                                 $count = ( $gotOne ? 1 : 0 );
 161                                 $oldies = $img->getHistory( $params['limit'] - $count + 1, $start, $params['end'] );
 162                                 /** @var $oldie File */
 163                                 foreach ( $oldies as $oldie ) {
 164                                         if ( ++$count > $params['limit'] ) {
 165                                                 // We've reached the extra one which shows that there are additional pages to be had. Stop here...
 166                                                 // Only set a query-continue if there was only one title
 167                                                 if ( count( $pageIds[NS_FILE] ) == 1 ) {
 168                                                         $this->setContinueEnumParameter( 'start',
 169                                                                 wfTimestamp( TS_ISO_8601, $oldie->getTimestamp() ) );
 170                                                 }
 171                                                 break;
 172                                         }
 173                                         $fit = self::getTransformCount() < self::TRANSFORM_LIMIT &&
 174                                                 $this->addPageSubItem( $pageId,
 175                                                         self::getInfo( $oldie, $prop, $result,
 176                                                                 $finalThumbParams, $params['metadataversion']
 177                                                         )
 178                                                 );
 179                                         if ( !$fit ) {
 180                                                 if ( count( $pageIds[NS_FILE] ) == 1 ) {
 181                                                         $this->setContinueEnumParameter( 'start',
 182                                                                 wfTimestamp( TS_ISO_8601, $oldie->getTimestamp() ) );
 183                                                 } else {
 184                                                         $this->setContinueEnumParameter( 'continue',
 185                                                                 $this->getContinueStr( $oldie ) );
 186                                                 }
 187                                                 break;
 188                                         }
 189                                 }
 190                                 if ( !$fit ) {
 191                                         break;
 192                                 }
 193                         }
 194                 }
 195         }
 196
 197         /**
 198          * From parameters, construct a 'scale' array
 199          * @param array $params Parameters passed to api.
 200          * @return Array or Null: key-val array of 'width' and 'height', or null
 201          */
 202         public function getScale( $params ) {
 203                 $p = $this->getModulePrefix();
 204
 205                 if ( $params['urlwidth'] != -1 ) {
 206                         $scale = array();
 207                         $scale['width'] = $params['urlwidth'];
 208                         $scale['height'] = $params['urlheight'];
 209                 } elseif ( $params['urlheight'] != -1 ) {
 210                         // Height is specified but width isn't
 211                         // Don't set $scale['width']; this signals mergeThumbParams() to fill it with the image's width
 212                         $scale = array();
 213                         $scale['height'] = $params['urlheight'];
 214                 } else {
 215                         $scale = null;
 216                         if ( $params['urlparam'] ) {
 217                                 $this->dieUsage( "{$p}urlparam requires {$p}urlwidth", "urlparam_no_width" );
 218                         }
 219                 }
 220
 221                 return $scale;
 222         }
 223
 224         /** Validate and merge scale parameters with handler thumb parameters, give error if invalid.
 225          *
 226          * We do this later than getScale, since we need the image
 227          * to know which handler, since handlers can make their own parameters.
 228          * @param File $image Image that params are for.
 229          * @param array $thumbParams thumbnail parameters from getScale
 230          * @param string $otherParams of otherParams (iiurlparam).
 231          * @return Array of parameters for transform.
 232          */
 233         protected function mergeThumbParams( $image, $thumbParams, $otherParams ) {
 234                 global $wgThumbLimits;
 235
 236                 if ( !isset( $thumbParams['width'] ) && isset( $thumbParams['height'] ) ) {
 237                         // We want to limit only by height in this situation, so pass the
 238                         // image's full width as the limiting width. But some file types
 239                         // don't have a width of their own, so pick something arbitrary so
 240                         // thumbnailing the default icon works.
 241                         if ( $image->getWidth() <= 0 ) {
 242                                 $thumbParams['width'] = max( $wgThumbLimits );
 243                         } else {
 244                                 $thumbParams['width'] = $image->getWidth();
 245                         }
 246                 }
 247
 248                 if ( !$otherParams ) {
 249                         return $thumbParams;
 250                 }
 251                 $p = $this->getModulePrefix();
 252
 253                 $h = $image->getHandler();
 254                 if ( !$h ) {
 255                         $this->setWarning( 'Could not create thumbnail because ' .
 256                                 $image->getName() . ' does not have an associated image handler' );
 257                         return $thumbParams;
 258                 }
 259
 260                 $paramList = $h->parseParamString( $otherParams );
 261                 if ( !$paramList ) {
 262                         // Just set a warning (instead of dieUsage), as in many cases
 263                         // we could still render the image using width and height parameters,
 264                         // and this type of thing could happen between different versions of
 265                         // handlers.
 266                         $this->setWarning( "Could not parse {$p}urlparam for " . $image->getName()
 267                                 . '. Using only width and height' );
 268                         return $thumbParams;
 269                 }
 270
 271                 if ( isset( $paramList['width'] ) ) {
 272                         if ( intval( $paramList['width'] ) != intval( $thumbParams['width'] ) ) {
 273                                 $this->setWarning( "Ignoring width value set in {$p}urlparam ({$paramList['width']}) "
 274                                         . "in favor of width value derived from {$p}urlwidth/{$p}urlheight ({$thumbParams['width']})" );
 275                         }
 276                 }
 277
 278                 foreach ( $paramList as $name => $value ) {
 279                         if ( !$h->validateParam( $name, $value ) ) {
 280                                 $this->dieUsage( "Invalid value for {$p}urlparam ($name=$value)", "urlparam" );
 281                         }
 282                 }
 283
 284                 return $thumbParams + $paramList;
 285         }
 286
 287         /**
 288          * Get result information for an image revision
 289          *
 290          * @param $file File object
 291          * @param array $prop of properties to get (in the keys)
 292          * @param $result ApiResult object
 293          * @param array $thumbParams containing 'width' and 'height' items, or null
 294          * @param string $version Version of image metadata (for things like jpeg which have different versions).
 295          * @return Array: result array
 296          */
 297         static function getInfo( $file, $prop, $result, $thumbParams = null, $version = 'latest' ) {
 298                 $vals = array();
 299                 // Timestamp is shown even if the file is revdelete'd in interface
 300                 // so do same here.
 301                 if ( isset( $prop['timestamp'] ) ) {
 302                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $file->getTimestamp() );
 303                 }
 304
 305                 $user = isset( $prop['user'] );
 306                 $userid = isset( $prop['userid'] );
 307
 308                 if ( $user || $userid ) {
 309                         if ( $file->isDeleted( File::DELETED_USER ) ) {
 310                                 $vals['userhidden'] = '';
 311                         } else {
 312                                 if ( $user ) {
 313                                         $vals['user'] = $file->getUser();
 314                                 }
 315                                 if ( $userid ) {
 316                                         $vals['userid'] = $file->getUser( 'id' );
 317                                 }
 318                                 if ( !$file->getUser( 'id' ) ) {
 319                                         $vals['anon'] = '';
 320                                 }
 321                         }
 322                 }
 323
 324                 // This is shown even if the file is revdelete'd in interface
 325                 // so do same here.
 326                 if ( isset( $prop['size'] ) || isset( $prop['dimensions'] ) ) {
 327                         $vals['size'] = intval( $file->getSize() );
 328                         $vals['width'] = intval( $file->getWidth() );
 329                         $vals['height'] = intval( $file->getHeight() );
 330
 331                         $pageCount = $file->pageCount();
 332                         if ( $pageCount !== false ) {
 333                                 $vals['pagecount'] = $pageCount;
 334                         }
 335                 }
 336
 337                 $pcomment = isset( $prop['parsedcomment'] );
 338                 $comment = isset( $prop['comment'] );
 339
 340                 if ( $pcomment || $comment ) {
 341                         if ( $file->isDeleted( File::DELETED_COMMENT ) ) {
 342                                 $vals['commenthidden'] = '';
 343                         } else {
 344                                 if ( $pcomment ) {
 345                                         $vals['parsedcomment'] = Linker::formatComment(
 346                                                 $file->getDescription(), $file->getTitle() );
 347                                 }
 348                                 if ( $comment ) {
 349                                         $vals['comment'] = $file->getDescription();
 350                                 }
 351                         }
 352                 }
 353
 354                 $url = isset( $prop['url'] );
 355                 $sha1 = isset( $prop['sha1'] );
 356                 $meta = isset( $prop['metadata'] );
 357                 $mime = isset( $prop['mime'] );
 358                 $mediatype = isset( $prop['mediatype'] );
 359                 $archive = isset( $prop['archivename'] );
 360                 $bitdepth = isset( $prop['bitdepth'] );
 361
 362                 if ( ( $url || $sha1 || $meta || $mime || $mediatype || $archive || $bitdepth )
 363                                 && $file->isDeleted( File::DELETED_FILE ) ) {
 364                         $vals['filehidden'] = '';
 365
 366                         //Early return, tidier than indenting all following things one level
 367                         return $vals;
 368                 }
 369
 370                 if ( $url ) {
 371                         if ( !is_null( $thumbParams ) ) {
 372                                 $mto = $file->transform( $thumbParams );
 373                                 self::$transformCount++;
 374                                 if ( $mto && !$mto->isError() ) {
 375                                         $vals['thumburl'] = wfExpandUrl( $mto->getUrl(), PROTO_CURRENT );
 376
 377                                         // bug 23834 - If the URL's are the same, we haven't resized it, so shouldn't give the wanted
 378                                         // thumbnail sizes for the thumbnail actual size
 379                                         if ( $mto->getUrl() !== $file->getUrl() ) {
 380                                                 $vals['thumbwidth'] = intval( $mto->getWidth() );
 381                                                 $vals['thumbheight'] = intval( $mto->getHeight() );
 382                                         } else {
 383                                                 $vals['thumbwidth'] = intval( $file->getWidth() );
 384                                                 $vals['thumbheight'] = intval( $file->getHeight() );
 385                                         }
 386
 387                                         if ( isset( $prop['thumbmime'] ) && $file->getHandler() ) {
 388                                                 list( , $mime ) = $file->getHandler()->getThumbType(
 389                                                         $mto->getExtension(), $file->getMimeType(), $thumbParams );
 390                                                 $vals['thumbmime'] = $mime;
 391                                         }
 392                                 } elseif ( $mto && $mto->isError() ) {
 393                                         $vals['thumberror'] = $mto->toText();
 394                                 }
 395                         }
 396                         $vals['url'] = wfExpandUrl( $file->getFullURL(), PROTO_CURRENT );
 397                         $vals['descriptionurl'] = wfExpandUrl( $file->getDescriptionUrl(), PROTO_CURRENT );
 398                 }
 399
 400                 if ( $sha1 ) {
 401                         $vals['sha1'] = wfBaseConvert( $file->getSha1(), 36, 16, 40 );
 402                 }
 403
 404                 if ( $meta ) {
 405                         wfSuppressWarnings();
 406                         $metadata = unserialize( $file->getMetadata() );
 407                         wfRestoreWarnings();
 408                         if ( $metadata && $version !== 'latest' ) {
 409                                 $metadata = $file->convertMetadataVersion( $metadata, $version );
 410                         }
 411                         $vals['metadata'] = $metadata ? self::processMetaData( $metadata, $result ) : null;
 412                 }
 413
 414                 if ( $mime ) {
 415                         $vals['mime'] = $file->getMimeType();
 416                 }
 417
 418                 if ( $mediatype ) {
 419                         $vals['mediatype'] = $file->getMediaType();
 420                 }
 421
 422                 if ( $archive && $file->isOld() ) {
 423                         $vals['archivename'] = $file->getArchiveName();
 424                 }
 425
 426                 if ( $bitdepth ) {
 427                         $vals['bitdepth'] = $file->getBitDepth();
 428                 }
 429
 430                 return $vals;
 431         }
 432
 433         /**
 434          * Get the count of image transformations performed
 435          *
 436          * If this is >= TRANSFORM_LIMIT, you should probably stop processing images.
 437          *
 438          * @return integer count
 439          */
 440         static function getTransformCount() {
 441                 return self::$transformCount;
 442         }
 443
 444         /**
 445          *
 446          * @param $metadata Array
 447          * @param $result ApiResult
 448          * @return Array
 449          */
 450         public static function processMetaData( $metadata, $result ) {
 451                 $retval = array();
 452                 if ( is_array( $metadata ) ) {
 453                         foreach ( $metadata as $key => $value ) {
 454                                 $r = array( 'name' => $key );
 455                                 if ( is_array( $value ) ) {
 456                                         $r['value'] = self::processMetaData( $value, $result );
 457                                 } else {
 458                                         $r['value'] = $value;
 459                                 }
 460                                 $retval[] = $r;
 461                         }
 462                 }
 463                 $result->setIndexedTagName( $retval, 'metadata' );
 464                 return $retval;
 465         }
 466
 467         public function getCacheMode( $params ) {
 468                 return 'public';
 469         }
 470
 471         /**
 472          * @param $img File
 473          * @param null|string $start
 474          * @return string
 475          */
 476         protected function getContinueStr( $img, $start = null ) {
 477                 if ( $start === null ) {
 478                         $start = $img->getTimestamp();
 479                 }
 480                 return $img->getOriginalTitle()->getDBkey() . '|' . $start;
 481         }
 482
 483         public function getAllowedParams() {
 484                 return array(
 485                         'prop' => array(
 486                                 ApiBase::PARAM_ISMULTI => true,
 487                                 ApiBase::PARAM_DFLT => 'timestamp|user',
 488                                 ApiBase::PARAM_TYPE => self::getPropertyNames()
 489                         ),
 490                         'limit' => array(
 491                                 ApiBase::PARAM_TYPE => 'limit',
 492                                 ApiBase::PARAM_DFLT => 1,
 493                                 ApiBase::PARAM_MIN => 1,
 494                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 495                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 496                         ),
 497                         'start' => array(
 498                                 ApiBase::PARAM_TYPE => 'timestamp'
 499                         ),
 500                         'end' => array(
 501                                 ApiBase::PARAM_TYPE => 'timestamp'
 502                         ),
 503                         'urlwidth' => array(
 504                                 ApiBase::PARAM_TYPE => 'integer',
 505                                 ApiBase::PARAM_DFLT => -1
 506                         ),
 507                         'urlheight' => array(
 508                                 ApiBase::PARAM_TYPE => 'integer',
 509                                 ApiBase::PARAM_DFLT => -1
 510                         ),
 511                         'metadataversion' => array(
 512                                 ApiBase::PARAM_TYPE => 'string',
 513                                 ApiBase::PARAM_DFLT => '1',
 514                         ),
 515                         'urlparam' => array(
 516                                 ApiBase::PARAM_DFLT => '',
 517                                 ApiBase::PARAM_TYPE => 'string',
 518                         ),
 519                         'continue' => null,
 520                         'localonly' => false,
 521                 );
 522         }
 523
 524         /**
 525          * Returns all possible parameters to iiprop
 526          *
 527          * @param array $filter List of properties to filter out
 528          *
 529          * @return Array
 530          */
 531         public static function getPropertyNames( $filter = array() ) {
 532                 return array_diff( array_keys( self::getProperties() ), $filter );
 533         }
 534
 535         /**
 536          * Returns array key value pairs of properties and their descriptions
 537          *
 538          * @param string $modulePrefix
 539          * @return array
 540          */
 541         private static function getProperties( $modulePrefix = '' ) {
 542                 return array(
 543                         'timestamp' =>      ' timestamp     - Adds timestamp for the uploaded version',
 544                         'user' =>           ' user          - Adds the user who uploaded the image version',
 545                         'userid' =>         ' userid        - Add the user ID that uploaded the image version',
 546                         'comment' =>        ' comment       - Comment on the version',
 547                         'parsedcomment' =>  ' parsedcomment - Parse the comment on the version',
 548                         'url' =>            ' url           - Gives URL to the image and the description page',
 549                         'size' =>           ' size          - Adds the size of the image in bytes and the height, width and page count (if applicable)',
 550                         'dimensions' =>     ' dimensions    - Alias for size', // For backwards compatibility with Allimages
 551                         'sha1' =>           ' sha1          - Adds SHA-1 hash for the image',
 552                         'mime' =>           ' mime          - Adds MIME type of the image',
 553                         'thumbmime' =>      ' thumbmime     - Adds MIME type of the image thumbnail' .
 554                                 ' (requires url and param ' . $modulePrefix . 'urlwidth)',
 555                         'mediatype' =>      ' mediatype     - Adds the media type of the image',
 556                         'metadata' =>       ' metadata      - Lists Exif metadata for the version of the image',
 557                         'archivename' =>    ' archivename   - Adds the file name of the archive version for non-latest versions',
 558                         'bitdepth' =>       ' bitdepth      - Adds the bit depth of the version',
 559                 );
 560         }
 561
 562         /**
 563          * Returns the descriptions for the properties provided by getPropertyNames()
 564          *
 565          * @param array $filter List of properties to filter out
 566          * @param string $modulePrefix
 567          * @return array
 568          */
 569         public static function getPropertyDescriptions( $filter = array(), $modulePrefix = '' ) {
 570                 return array_merge(
 571                         array( 'What image information to get:' ),
 572                         array_values( array_diff_key( self::getProperties( $modulePrefix ), array_flip( $filter ) ) )
 573                 );
 574         }
 575
 576         /**
 577          * Return the API documentation for the parameters.
 578          * @return Array parameter documentation.
 579          */
 580         public function getParamDescription() {
 581                 $p = $this->getModulePrefix();
 582                 return array(
 583                         'prop' => self::getPropertyDescriptions( array(), $p ),
 584                         'urlwidth' => array( "If {$p}prop=url is set, a URL to an image scaled to this width will be returned.",
 585                                 'For performance reasons if this option is used, ' .
 586                                         'no more than ' . self::TRANSFORM_LIMIT . ' scaled images will be returned.' ),
 587                         'urlheight' => "Similar to {$p}urlwidth.",
 588                         'urlparam' => array( "A handler specific parameter string. For example, pdf's ",
 589                                 "might use 'page15-100px'. {$p}urlwidth must be used and be consistent with {$p}urlparam" ),
 590                         'limit' => 'How many image revisions to return per image',
 591                         'start' => 'Timestamp to start listing from',
 592                         'end' => 'Timestamp to stop listing at',
 593                         'metadataversion' => array( "Version of metadata to use. if 'latest' is specified, use latest version.",
 594                                                 "Defaults to '1' for backwards compatibility" ),
 595                         'continue' => 'If the query response includes a continue value, use it here to get another page of results',
 596                         'localonly' => 'Look only for files in the local repository',
 597                 );
 598         }
 599
 600         public static function getResultPropertiesFiltered( $filter = array() ) {
 601                 $props = array(
 602                         'timestamp' => array(
 603                                 'timestamp' => 'timestamp'
 604                         ),
 605                         'user' => array(
 606                                 'userhidden' => 'boolean',
 607                                 'user' => 'string',
 608                                 'anon' => 'boolean'
 609                         ),
 610                         'userid' => array(
 611                                 'userhidden' => 'boolean',
 612                                 'userid' => 'integer',
 613                                 'anon' => 'boolean'
 614                         ),
 615                         'size' => array(
 616                                 'size' => 'integer',
 617                                 'width' => 'integer',
 618                                 'height' => 'integer',
 619                                 'pagecount' => array(
 620                                         ApiBase::PROP_TYPE => 'integer',
 621                                         ApiBase::PROP_NULLABLE => true
 622                                 )
 623                         ),
 624                         'dimensions' => array(
 625                                 'size' => 'integer',
 626                                 'width' => 'integer',
 627                                 'height' => 'integer',
 628                                 'pagecount' => array(
 629                                         ApiBase::PROP_TYPE => 'integer',
 630                                         ApiBase::PROP_NULLABLE => true
 631                                 )
 632                         ),
 633                         'comment' => array(
 634                                 'commenthidden' => 'boolean',
 635                                 'comment' => array(
 636                                         ApiBase::PROP_TYPE => 'string',
 637                                         ApiBase::PROP_NULLABLE => true
 638                                 )
 639                         ),
 640                         'parsedcomment' => array(
 641                                 'commenthidden' => 'boolean',
 642                                 'parsedcomment' => array(
 643                                         ApiBase::PROP_TYPE => 'string',
 644                                         ApiBase::PROP_NULLABLE => true
 645                                 )
 646                         ),
 647                         'url' => array(
 648                                 'filehidden' => 'boolean',
 649                                 'thumburl' => array(
 650                                         ApiBase::PROP_TYPE => 'string',
 651                                         ApiBase::PROP_NULLABLE => true
 652                                 ),
 653                                 'thumbwidth' => array(
 654                                         ApiBase::PROP_TYPE => 'integer',
 655                                         ApiBase::PROP_NULLABLE => true
 656                                 ),
 657                                 'thumbheight' => array(
 658                                         ApiBase::PROP_TYPE => 'integer',
 659                                         ApiBase::PROP_NULLABLE => true
 660                                 ),
 661                                 'thumberror' => array(
 662                                         ApiBase::PROP_TYPE => 'string',
 663                                         ApiBase::PROP_NULLABLE => true
 664                                 ),
 665                                 'url' => array(
 666                                         ApiBase::PROP_TYPE => 'string',
 667                                         ApiBase::PROP_NULLABLE => true
 668                                 ),
 669                                 'descriptionurl' => array(
 670                                         ApiBase::PROP_TYPE => 'string',
 671                                         ApiBase::PROP_NULLABLE => true
 672                                 )
 673                         ),
 674                         'sha1' => array(
 675                                 'filehidden' => 'boolean',
 676                                 'sha1' => array(
 677                                         ApiBase::PROP_TYPE => 'string',
 678                                         ApiBase::PROP_NULLABLE => true
 679                                 )
 680                         ),
 681                         'mime' => array(
 682                                 'filehidden' => 'boolean',
 683                                 'mime' => array(
 684                                         ApiBase::PROP_TYPE => 'string',
 685                                         ApiBase::PROP_NULLABLE => true
 686                                 )
 687                         ),
 688                         'thumbmime' => array(
 689                                 'filehidden' => 'boolean',
 690                                 'thumbmime' => array(
 691                                         ApiBase::PROP_TYPE => 'string',
 692                                         ApiBase::PROP_NULLABLE => true
 693                                 )
 694                         ),
 695                         'mediatype' => array(
 696                                 'filehidden' => 'boolean',
 697                                 'mediatype' => array(
 698                                         ApiBase::PROP_TYPE => 'string',
 699                                         ApiBase::PROP_NULLABLE => true
 700                                 )
 701                         ),
 702                         'archivename' => array(
 703                                 'filehidden' => 'boolean',
 704                                 'archivename' => array(
 705                                         ApiBase::PROP_TYPE => 'string',
 706                                         ApiBase::PROP_NULLABLE => true
 707                                 )
 708                         ),
 709                         'bitdepth' => array(
 710                                 'filehidden' => 'boolean',
 711                                 'bitdepth' => array(
 712                                         ApiBase::PROP_TYPE => 'integer',
 713                                         ApiBase::PROP_NULLABLE => true
 714                                 )
 715                         ),
 716                 );
 717                 return array_diff_key( $props, array_flip( $filter ) );
 718         }
 719
 720         public function getResultProperties() {
 721                 return self::getResultPropertiesFiltered();
 722         }
 723
 724         public function getDescription() {
 725                 return 'Returns image information and upload history';
 726         }
 727
 728         public function getPossibleErrors() {
 729                 $p = $this->getModulePrefix();
 730                 return array_merge( parent::getPossibleErrors(), array(
 731                         array( 'code' => "{$p}urlwidth", 'info' => "{$p}urlheight cannot be used without {$p}urlwidth" ),
 732                         array( 'code' => 'urlparam', 'info' => "Invalid value for {$p}urlparam" ),
 733                         array( 'code' => 'urlparam_no_width', 'info' => "{$p}urlparam requires {$p}urlwidth" ),
 734                 ) );
 735         }
 736
 737         public function getExamples() {
 738                 return array(
 739                         'api.php?action=query&titles=File:Albert%20Einstein%20Head.jpg&prop=imageinfo',
 740                         'api.php?action=query&titles=File:Test.jpg&prop=imageinfo&iilimit=50&iiend=20071231235959&iiprop=timestamp|user|url',
 741                 );
 742         }
 743
 744         public function getHelpUrls() {
 745                 return 'https://www.mediawiki.org/wiki/API:Properties#imageinfo_.2F_ii';
 746         }
 747 }