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( ApiQuery $query, $moduleName, $prefix = 'ii' ) {
  37                 // We allow a subclass to override the prefix, to create a related API
  38                 // module. Some other parts of MediaWiki construct this with a null
  39                 // $prefix, which used to be ignored when this only took two arguments
  40                 if ( is_null( $prefix ) ) {
  41                         $prefix = 'ii';
  42                 }
  43                 parent::__construct( $query, $moduleName, $prefix );
  44         }
  45
  46         public function execute() {
  47                 $params = $this->extractRequestParams();
  48
  49                 $prop = array_flip( $params['prop'] );
  50
  51                 $scale = $this->getScale( $params );
  52
  53                 $opts = [
  54                         'version' => $params['metadataversion'],
  55                         'language' => $params['extmetadatalanguage'],
  56                         'multilang' => $params['extmetadatamultilang'],
  57                         'extmetadatafilter' => $params['extmetadatafilter'],
  58                         'revdelUser' => $this->getUser(),
  59                 ];
  60
  61                 if ( isset( $params['badfilecontexttitle'] ) ) {
  62                         $badFileContextTitle = Title::newFromText( $params['badfilecontexttitle'] );
  63                         if ( !$badFileContextTitle ) {
  64                                 $this->dieUsage( 'Invalid title in badfilecontexttitle parameter', 'invalid-title' );
  65                         }
  66                 } else {
  67                         $badFileContextTitle = false;
  68                 }
  69
  70                 $pageIds = $this->getPageSet()->getGoodAndMissingTitlesByNamespace();
  71                 if ( !empty( $pageIds[NS_FILE] ) ) {
  72                         $titles = array_keys( $pageIds[NS_FILE] );
  73                         asort( $titles ); // Ensure the order is always the same
  74
  75                         $fromTitle = null;
  76                         if ( !is_null( $params['continue'] ) ) {
  77                                 $cont = explode( '|', $params['continue'] );
  78                                 $this->dieContinueUsageIf( count( $cont ) != 2 );
  79                                 $fromTitle = strval( $cont[0] );
  80                                 $fromTimestamp = $cont[1];
  81                                 // Filter out any titles before $fromTitle
  82                                 foreach ( $titles as $key => $title ) {
  83                                         if ( $title < $fromTitle ) {
  84                                                 unset( $titles[$key] );
  85                                         } else {
  86                                                 break;
  87                                         }
  88                                 }
  89                         }
  90
  91                         $user = $this->getUser();
  92                         $findTitles = array_map( function ( $title ) use ( $user ) {
  93                                 return [
  94                                         'title' => $title,
  95                                         'private' => $user,
  96                                 ];
  97                         }, $titles );
  98
  99                         if ( $params['localonly'] ) {
 100                                 $images = RepoGroup::singleton()->getLocalRepo()->findFiles( $findTitles );
 101                         } else {
 102                                 $images = RepoGroup::singleton()->findFiles( $findTitles );
 103                         }
 104
 105                         $result = $this->getResult();
 106                         foreach ( $titles as $title ) {
 107                                 $info = [];
 108                                 $pageId = $pageIds[NS_FILE][$title];
 109                                 $start = $title === $fromTitle ? $fromTimestamp : $params['start'];
 110
 111                                 if ( !isset( $images[$title] ) ) {
 112                                         if ( isset( $prop['uploadwarning'] ) || isset( $prop['badfile'] ) ) {
 113                                                 // uploadwarning and badfile need info about non-existing files
 114                                                 $images[$title] = wfLocalFile( $title );
 115                                                 // Doesn't exist, so set an empty image repository
 116                                                 $info['imagerepository'] = '';
 117                                         } else {
 118                                                 $result->addValue(
 119                                                         [ 'query', 'pages', intval( $pageId ) ],
 120                                                         'imagerepository', ''
 121                                                 );
 122                                                 // The above can't fail because it doesn't increase the result size
 123                                                 continue;
 124                                         }
 125                                 }
 126
 127                                 /** @var File $img */
 128                                 $img = $images[$title];
 129
 130                                 if ( self::getTransformCount() >= self::TRANSFORM_LIMIT ) {
 131                                         if ( count( $pageIds[NS_FILE] ) == 1 ) {
 132                                                 // See the 'the user is screwed' comment below
 133                                                 $this->setContinueEnumParameter( 'start',
 134                                                         $start !== null ? $start : wfTimestamp( TS_ISO_8601, $img->getTimestamp() )
 135                                                 );
 136                                         } else {
 137                                                 $this->setContinueEnumParameter( 'continue',
 138                                                         $this->getContinueStr( $img, $start ) );
 139                                         }
 140                                         break;
 141                                 }
 142
 143                                 if ( !isset( $info['imagerepository'] ) ) {
 144                                         $info['imagerepository'] = $img->getRepoName();
 145                                 }
 146                                 if ( isset( $prop['badfile'] ) ) {
 147                                         $info['badfile'] = (bool)wfIsBadImage( $title, $badFileContextTitle );
 148                                 }
 149
 150                                 $fit = $result->addValue( [ 'query', 'pages' ], intval( $pageId ), $info );
 151                                 if ( !$fit ) {
 152                                         if ( count( $pageIds[NS_FILE] ) == 1 ) {
 153                                                 // The user is screwed. imageinfo can't be solely
 154                                                 // responsible for exceeding the limit in this case,
 155                                                 // so set a query-continue that just returns the same
 156                                                 // thing again. When the violating queries have been
 157                                                 // out-continued, the result will get through
 158                                                 $this->setContinueEnumParameter( 'start',
 159                                                         $start !== null ? $start : wfTimestamp( TS_ISO_8601, $img->getTimestamp() )
 160                                                 );
 161                                         } else {
 162                                                 $this->setContinueEnumParameter( 'continue',
 163                                                         $this->getContinueStr( $img, $start ) );
 164                                         }
 165                                         break;
 166                                 }
 167
 168                                 // Check if we can make the requested thumbnail, and get transform parameters.
 169                                 $finalThumbParams = $this->mergeThumbParams( $img, $scale, $params['urlparam'] );
 170
 171                                 // Get information about the current version first
 172                                 // Check that the current version is within the start-end boundaries
 173                                 $gotOne = false;
 174                                 if (
 175                                         ( is_null( $start ) || $img->getTimestamp() <= $start ) &&
 176                                         ( is_null( $params['end'] ) || $img->getTimestamp() >= $params['end'] )
 177                                 ) {
 178                                         $gotOne = true;
 179
 180                                         $fit = $this->addPageSubItem( $pageId,
 181                                                 static::getInfo( $img, $prop, $result,
 182                                                         $finalThumbParams, $opts
 183                                                 )
 184                                         );
 185                                         if ( !$fit ) {
 186                                                 if ( count( $pageIds[NS_FILE] ) == 1 ) {
 187                                                         // See the 'the user is screwed' comment above
 188                                                         $this->setContinueEnumParameter( 'start',
 189                                                                 wfTimestamp( TS_ISO_8601, $img->getTimestamp() ) );
 190                                                 } else {
 191                                                         $this->setContinueEnumParameter( 'continue',
 192                                                                 $this->getContinueStr( $img ) );
 193                                                 }
 194                                                 break;
 195                                         }
 196                                 }
 197
 198                                 // Now get the old revisions
 199                                 // Get one more to facilitate query-continue functionality
 200                                 $count = ( $gotOne ? 1 : 0 );
 201                                 $oldies = $img->getHistory( $params['limit'] - $count + 1, $start, $params['end'] );
 202                                 /** @var File $oldie */
 203                                 foreach ( $oldies as $oldie ) {
 204                                         if ( ++$count > $params['limit'] ) {
 205                                                 // We've reached the extra one which shows that there are
 206                                                 // additional pages to be had. Stop here...
 207                                                 // Only set a query-continue if there was only one title
 208                                                 if ( count( $pageIds[NS_FILE] ) == 1 ) {
 209                                                         $this->setContinueEnumParameter( 'start',
 210                                                                 wfTimestamp( TS_ISO_8601, $oldie->getTimestamp() ) );
 211                                                 }
 212                                                 break;
 213                                         }
 214                                         $fit = self::getTransformCount() < self::TRANSFORM_LIMIT &&
 215                                                 $this->addPageSubItem( $pageId,
 216                                                         static::getInfo( $oldie, $prop, $result,
 217                                                                 $finalThumbParams, $opts
 218                                                         )
 219                                                 );
 220                                         if ( !$fit ) {
 221                                                 if ( count( $pageIds[NS_FILE] ) == 1 ) {
 222                                                         $this->setContinueEnumParameter( 'start',
 223                                                                 wfTimestamp( TS_ISO_8601, $oldie->getTimestamp() ) );
 224                                                 } else {
 225                                                         $this->setContinueEnumParameter( 'continue',
 226                                                                 $this->getContinueStr( $oldie ) );
 227                                                 }
 228                                                 break;
 229                                         }
 230                                 }
 231                                 if ( !$fit ) {
 232                                         break;
 233                                 }
 234                         }
 235                 }
 236         }
 237
 238         /**
 239          * From parameters, construct a 'scale' array
 240          * @param array $params Parameters passed to api.
 241          * @return array|null Key-val array of 'width' and 'height', or null
 242          */
 243         public function getScale( $params ) {
 244                 if ( $params['urlwidth'] != -1 ) {
 245                         $scale = [];
 246                         $scale['width'] = $params['urlwidth'];
 247                         $scale['height'] = $params['urlheight'];
 248                 } elseif ( $params['urlheight'] != -1 ) {
 249                         // Height is specified but width isn't
 250                         // Don't set $scale['width']; this signals mergeThumbParams() to fill it with the image's width
 251                         $scale = [];
 252                         $scale['height'] = $params['urlheight'];
 253                 } else {
 254                         if ( $params['urlparam'] ) {
 255                                 // Audio files might not have a width/height.
 256                                 $scale = [];
 257                         } else {
 258                                 $scale = null;
 259                         }
 260                 }
 261
 262                 return $scale;
 263         }
 264
 265         /** Validate and merge scale parameters with handler thumb parameters, give error if invalid.
 266          *
 267          * We do this later than getScale, since we need the image
 268          * to know which handler, since handlers can make their own parameters.
 269          * @param File $image Image that params are for.
 270          * @param array $thumbParams Thumbnail parameters from getScale
 271          * @param string $otherParams String of otherParams (iiurlparam).
 272          * @return array Array of parameters for transform.
 273          */
 274         protected function mergeThumbParams( $image, $thumbParams, $otherParams ) {
 275                 if ( $thumbParams === null ) {
 276                         // No scaling requested
 277                         return null;
 278                 }
 279                 if ( !isset( $thumbParams['width'] ) && isset( $thumbParams['height'] ) ) {
 280                         // We want to limit only by height in this situation, so pass the
 281                         // image's full width as the limiting width. But some file types
 282                         // don't have a width of their own, so pick something arbitrary so
 283                         // thumbnailing the default icon works.
 284                         if ( $image->getWidth() <= 0 ) {
 285                                 $thumbParams['width'] = max( $this->getConfig()->get( 'ThumbLimits' ) );
 286                         } else {
 287                                 $thumbParams['width'] = $image->getWidth();
 288                         }
 289                 }
 290
 291                 if ( !$otherParams ) {
 292                         $this->checkParameterNormalise( $image, $thumbParams );
 293                         return $thumbParams;
 294                 }
 295                 $p = $this->getModulePrefix();
 296
 297                 $h = $image->getHandler();
 298                 if ( !$h ) {
 299                         $this->addWarning( [ 'apiwarn-nothumb-noimagehandler', wfEscapeWikiText( $image->getName() ) ] );
 300
 301                         return $thumbParams;
 302                 }
 303
 304                 $paramList = $h->parseParamString( $otherParams );
 305                 if ( !$paramList ) {
 306                         // Just set a warning (instead of dieUsage), as in many cases
 307                         // we could still render the image using width and height parameters,
 308                         // and this type of thing could happen between different versions of
 309                         // handlers.
 310                         $this->addWarning( [ 'apiwarn-badurlparam', $p, wfEscapeWikiText( $image->getName() ) ] );
 311                         $this->checkParameterNormalise( $image, $thumbParams );
 312                         return $thumbParams;
 313                 }
 314
 315                 if ( isset( $paramList['width'] ) && isset( $thumbParams['width'] ) ) {
 316                         if ( intval( $paramList['width'] ) != intval( $thumbParams['width'] ) ) {
 317                                 $this->addWarning(
 318                                         [ 'apiwarn-urlparamwidth', $p, $paramList['width'], $thumbParams['width'] ]
 319                                 );
 320                         }
 321                 }
 322
 323                 foreach ( $paramList as $name => $value ) {
 324                         if ( !$h->validateParam( $name, $value ) ) {
 325                                 $this->dieWithError(
 326                                         [ 'apierror-invalidurlparam', $p, wfEscapeWikiText( $name ), wfEscapeWikiText( $value ) ]
 327                                 );
 328                         }
 329                 }
 330
 331                 $finalParams = $thumbParams + $paramList;
 332                 $this->checkParameterNormalise( $image, $finalParams );
 333                 return $finalParams;
 334         }
 335
 336         /**
 337          * Verify that the final image parameters can be normalised.
 338          *
 339          * This doesn't use the normalised parameters, since $file->transform
 340          * expects the pre-normalised parameters, but doing the normalisation
 341          * allows us to catch certain error conditions early (such as missing
 342          * required parameter).
 343          *
 344          * @param File $image
 345          * @param array $finalParams List of parameters to transform image with
 346          */
 347         protected function checkParameterNormalise( $image, $finalParams ) {
 348                 $h = $image->getHandler();
 349                 if ( !$h ) {
 350                         return;
 351                 }
 352                 // Note: normaliseParams modifies the array in place, but we aren't interested
 353                 // in the actual normalised version, only if we can actually normalise them,
 354                 // so we use the functions scope to throw away the normalisations.
 355                 if ( !$h->normaliseParams( $image, $finalParams ) ) {
 356                         $this->dieWithError( [ 'apierror-urlparamnormal', wfEscapeWikiText( $image->getName() ) ] );
 357                 }
 358         }
 359
 360         /**
 361          * Get result information for an image revision
 362          *
 363          * @param File $file
 364          * @param array $prop Array of properties to get (in the keys)
 365          * @param ApiResult $result
 366          * @param array $thumbParams Containing 'width' and 'height' items, or null
 367          * @param array|bool|string $opts Options for data fetching.
 368          *   This is an array consisting of the keys:
 369          *    'version': The metadata version for the metadata option
 370          *    'language': The language for extmetadata property
 371          *    'multilang': Return all translations in extmetadata property
 372          *    'revdelUser': User to use when checking whether to show revision-deleted fields.
 373          * @return array Result array
 374          */
 375         public static function getInfo( $file, $prop, $result, $thumbParams = null, $opts = false ) {
 376                 global $wgContLang;
 377
 378                 $anyHidden = false;
 379
 380                 if ( !$opts || is_string( $opts ) ) {
 381                         $opts = [
 382                                 'version' => $opts ?: 'latest',
 383                                 'language' => $wgContLang,
 384                                 'multilang' => false,
 385                                 'extmetadatafilter' => [],
 386                                 'revdelUser' => null,
 387                         ];
 388                 }
 389                 $version = $opts['version'];
 390                 $vals = [
 391                         ApiResult::META_TYPE => 'assoc',
 392                 ];
 393                 // Timestamp is shown even if the file is revdelete'd in interface
 394                 // so do same here.
 395                 if ( isset( $prop['timestamp'] ) ) {
 396                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $file->getTimestamp() );
 397                 }
 398
 399                 // Handle external callers who don't pass revdelUser
 400                 if ( isset( $opts['revdelUser'] ) && $opts['revdelUser'] ) {
 401                         $revdelUser = $opts['revdelUser'];
 402                         $canShowField = function ( $field ) use ( $file, $revdelUser ) {
 403                                 return $file->userCan( $field, $revdelUser );
 404                         };
 405                 } else {
 406                         $canShowField = function ( $field ) use ( $file ) {
 407                                 return !$file->isDeleted( $field );
 408                         };
 409                 }
 410
 411                 $user = isset( $prop['user'] );
 412                 $userid = isset( $prop['userid'] );
 413
 414                 if ( $user || $userid ) {
 415                         if ( $file->isDeleted( File::DELETED_USER ) ) {
 416                                 $vals['userhidden'] = true;
 417                                 $anyHidden = true;
 418                         }
 419                         if ( $canShowField( File::DELETED_USER ) ) {
 420                                 if ( $user ) {
 421                                         $vals['user'] = $file->getUser();
 422                                 }
 423                                 if ( $userid ) {
 424                                         $vals['userid'] = $file->getUser( 'id' );
 425                                 }
 426                                 if ( !$file->getUser( 'id' ) ) {
 427                                         $vals['anon'] = true;
 428                                 }
 429                         }
 430                 }
 431
 432                 // This is shown even if the file is revdelete'd in interface
 433                 // so do same here.
 434                 if ( isset( $prop['size'] ) || isset( $prop['dimensions'] ) ) {
 435                         $vals['size'] = intval( $file->getSize() );
 436                         $vals['width'] = intval( $file->getWidth() );
 437                         $vals['height'] = intval( $file->getHeight() );
 438
 439                         $pageCount = $file->pageCount();
 440                         if ( $pageCount !== false ) {
 441                                 $vals['pagecount'] = $pageCount;
 442                         }
 443
 444                         // length as in how many seconds long a video is.
 445                         $length = $file->getLength();
 446                         if ( $length ) {
 447                                 // Call it duration, because "length" can be ambiguous.
 448                                 $vals['duration'] = (float)$length;
 449                         }
 450                 }
 451
 452                 $pcomment = isset( $prop['parsedcomment'] );
 453                 $comment = isset( $prop['comment'] );
 454
 455                 if ( $pcomment || $comment ) {
 456                         if ( $file->isDeleted( File::DELETED_COMMENT ) ) {
 457                                 $vals['commenthidden'] = true;
 458                                 $anyHidden = true;
 459                         }
 460                         if ( $canShowField( File::DELETED_COMMENT ) ) {
 461                                 if ( $pcomment ) {
 462                                         $vals['parsedcomment'] = Linker::formatComment(
 463                                                 $file->getDescription( File::RAW ), $file->getTitle() );
 464                                 }
 465                                 if ( $comment ) {
 466                                         $vals['comment'] = $file->getDescription( File::RAW );
 467                                 }
 468                         }
 469                 }
 470
 471                 $canonicaltitle = isset( $prop['canonicaltitle'] );
 472                 $url = isset( $prop['url'] );
 473                 $sha1 = isset( $prop['sha1'] );
 474                 $meta = isset( $prop['metadata'] );
 475                 $extmetadata = isset( $prop['extmetadata'] );
 476                 $commonmeta = isset( $prop['commonmetadata'] );
 477                 $mime = isset( $prop['mime'] );
 478                 $mediatype = isset( $prop['mediatype'] );
 479                 $archive = isset( $prop['archivename'] );
 480                 $bitdepth = isset( $prop['bitdepth'] );
 481                 $uploadwarning = isset( $prop['uploadwarning'] );
 482
 483                 if ( $uploadwarning ) {
 484                         $vals['html'] = SpecialUpload::getExistsWarning( UploadBase::getExistsWarning( $file ) );
 485                 }
 486
 487                 if ( $file->isDeleted( File::DELETED_FILE ) ) {
 488                         $vals['filehidden'] = true;
 489                         $anyHidden = true;
 490                 }
 491
 492                 if ( $anyHidden && $file->isDeleted( File::DELETED_RESTRICTED ) ) {
 493                         $vals['suppressed'] = true;
 494                 }
 495
 496                 if ( !$canShowField( File::DELETED_FILE ) ) {
 497                         // Early return, tidier than indenting all following things one level
 498                         return $vals;
 499                 }
 500
 501                 if ( $canonicaltitle ) {
 502                         $vals['canonicaltitle'] = $file->getTitle()->getPrefixedText();
 503                 }
 504
 505                 if ( $url ) {
 506                         if ( $file->exists() ) {
 507                                 if ( !is_null( $thumbParams ) ) {
 508                                         $mto = $file->transform( $thumbParams );
 509                                         self::$transformCount++;
 510                                         if ( $mto && !$mto->isError() ) {
 511                                                 $vals['thumburl'] = wfExpandUrl( $mto->getUrl(), PROTO_CURRENT );
 512
 513                                                 // T25834 - If the URLs are the same, we haven't resized it, so shouldn't give the wanted
 514                                                 // thumbnail sizes for the thumbnail actual size
 515                                                 if ( $mto->getUrl() !== $file->getUrl() ) {
 516                                                         $vals['thumbwidth'] = intval( $mto->getWidth() );
 517                                                         $vals['thumbheight'] = intval( $mto->getHeight() );
 518                                                 } else {
 519                                                         $vals['thumbwidth'] = intval( $file->getWidth() );
 520                                                         $vals['thumbheight'] = intval( $file->getHeight() );
 521                                                 }
 522
 523                                                 if ( isset( $prop['thumbmime'] ) && $file->getHandler() ) {
 524                                                         list( , $mime ) = $file->getHandler()->getThumbType(
 525                                                                 $mto->getExtension(), $file->getMimeType(), $thumbParams );
 526                                                         $vals['thumbmime'] = $mime;
 527                                                 }
 528                                         } elseif ( $mto && $mto->isError() ) {
 529                                                 $vals['thumberror'] = $mto->toText();
 530                                         }
 531                                 }
 532                                 $vals['url'] = wfExpandUrl( $file->getFullUrl(), PROTO_CURRENT );
 533                         } else {
 534                                 $vals['filemissing'] = true;
 535                         }
 536                         $vals['descriptionurl'] = wfExpandUrl( $file->getDescriptionUrl(), PROTO_CURRENT );
 537
 538                         $shortDescriptionUrl = $file->getDescriptionShortUrl();
 539                         if ( $shortDescriptionUrl !== null ) {
 540                                 $vals['descriptionshorturl'] = wfExpandUrl( $shortDescriptionUrl, PROTO_CURRENT );
 541                         }
 542                 }
 543
 544                 if ( $sha1 ) {
 545                         $vals['sha1'] = Wikimedia\base_convert( $file->getSha1(), 36, 16, 40 );
 546                 }
 547
 548                 if ( $meta ) {
 549                         MediaWiki\suppressWarnings();
 550                         $metadata = unserialize( $file->getMetadata() );
 551                         MediaWiki\restoreWarnings();
 552                         if ( $metadata && $version !== 'latest' ) {
 553                                 $metadata = $file->convertMetadataVersion( $metadata, $version );
 554                         }
 555                         $vals['metadata'] = $metadata ? static::processMetaData( $metadata, $result ) : null;
 556                 }
 557                 if ( $commonmeta ) {
 558                         $metaArray = $file->getCommonMetaArray();
 559                         $vals['commonmetadata'] = $metaArray ? static::processMetaData( $metaArray, $result ) : [];
 560                 }
 561
 562                 if ( $extmetadata ) {
 563                         // Note, this should return an array where all the keys
 564                         // start with a letter, and all the values are strings.
 565                         // Thus there should be no issue with format=xml.
 566                         $format = new FormatMetadata;
 567                         $format->setSingleLanguage( !$opts['multilang'] );
 568                         $format->getContext()->setLanguage( $opts['language'] );
 569                         $extmetaArray = $format->fetchExtendedMetadata( $file );
 570                         if ( $opts['extmetadatafilter'] ) {
 571                                 $extmetaArray = array_intersect_key(
 572                                         $extmetaArray, array_flip( $opts['extmetadatafilter'] )
 573                                 );
 574                         }
 575                         $vals['extmetadata'] = $extmetaArray;
 576                 }
 577
 578                 if ( $mime ) {
 579                         $vals['mime'] = $file->getMimeType();
 580                 }
 581
 582                 if ( $mediatype ) {
 583                         $vals['mediatype'] = $file->getMediaType();
 584                 }
 585
 586                 if ( $archive && $file->isOld() ) {
 587                         $vals['archivename'] = $file->getArchiveName();
 588                 }
 589
 590                 if ( $bitdepth ) {
 591                         $vals['bitdepth'] = $file->getBitDepth();
 592                 }
 593
 594                 return $vals;
 595         }
 596
 597         /**
 598          * Get the count of image transformations performed
 599          *
 600          * If this is >= TRANSFORM_LIMIT, you should probably stop processing images.
 601          *
 602          * @return int Count
 603          */
 604         static function getTransformCount() {
 605                 return self::$transformCount;
 606         }
 607
 608         /**
 609          *
 610          * @param array $metadata
 611          * @param ApiResult $result
 612          * @return array
 613          */
 614         public static function processMetaData( $metadata, $result ) {
 615                 $retval = [];
 616                 if ( is_array( $metadata ) ) {
 617                         foreach ( $metadata as $key => $value ) {
 618                                 $r = [
 619                                         'name' => $key,
 620                                         ApiResult::META_BC_BOOLS => [ 'value' ],
 621                                 ];
 622                                 if ( is_array( $value ) ) {
 623                                         $r['value'] = static::processMetaData( $value, $result );
 624                                 } else {
 625                                         $r['value'] = $value;
 626                                 }
 627                                 $retval[] = $r;
 628                         }
 629                 }
 630                 ApiResult::setIndexedTagName( $retval, 'metadata' );
 631
 632                 return $retval;
 633         }
 634
 635         public function getCacheMode( $params ) {
 636                 if ( $this->userCanSeeRevDel() ) {
 637                         return 'private';
 638                 }
 639
 640                 return 'public';
 641         }
 642
 643         /**
 644          * @param File $img
 645          * @param null|string $start
 646          * @return string
 647          */
 648         protected function getContinueStr( $img, $start = null ) {
 649                 if ( $start === null ) {
 650                         $start = $img->getTimestamp();
 651                 }
 652
 653                 return $img->getOriginalTitle()->getDBkey() . '|' . $start;
 654         }
 655
 656         public function getAllowedParams() {
 657                 global $wgContLang;
 658
 659                 return [
 660                         'prop' => [
 661                                 ApiBase::PARAM_ISMULTI => true,
 662                                 ApiBase::PARAM_DFLT => 'timestamp|user',
 663                                 ApiBase::PARAM_TYPE => static::getPropertyNames(),
 664                                 ApiBase::PARAM_HELP_MSG_PER_VALUE => static::getPropertyMessages(),
 665                         ],
 666                         'limit' => [
 667                                 ApiBase::PARAM_TYPE => 'limit',
 668                                 ApiBase::PARAM_DFLT => 1,
 669                                 ApiBase::PARAM_MIN => 1,
 670                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 671                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 672                         ],
 673                         'start' => [
 674                                 ApiBase::PARAM_TYPE => 'timestamp'
 675                         ],
 676                         'end' => [
 677                                 ApiBase::PARAM_TYPE => 'timestamp'
 678                         ],
 679                         'urlwidth' => [
 680                                 ApiBase::PARAM_TYPE => 'integer',
 681                                 ApiBase::PARAM_DFLT => -1,
 682                                 ApiBase::PARAM_HELP_MSG => [
 683                                         'apihelp-query+imageinfo-param-urlwidth',
 684                                         self::TRANSFORM_LIMIT,
 685                                 ],
 686                         ],
 687                         'urlheight' => [
 688                                 ApiBase::PARAM_TYPE => 'integer',
 689                                 ApiBase::PARAM_DFLT => -1
 690                         ],
 691                         'metadataversion' => [
 692                                 ApiBase::PARAM_TYPE => 'string',
 693                                 ApiBase::PARAM_DFLT => '1',
 694                         ],
 695                         'extmetadatalanguage' => [
 696                                 ApiBase::PARAM_TYPE => 'string',
 697                                 ApiBase::PARAM_DFLT => $wgContLang->getCode(),
 698                         ],
 699                         'extmetadatamultilang' => [
 700                                 ApiBase::PARAM_TYPE => 'boolean',
 701                                 ApiBase::PARAM_DFLT => false,
 702                         ],
 703                         'extmetadatafilter' => [
 704                                 ApiBase::PARAM_TYPE => 'string',
 705                                 ApiBase::PARAM_ISMULTI => true,
 706                         ],
 707                         'urlparam' => [
 708                                 ApiBase::PARAM_DFLT => '',
 709                                 ApiBase::PARAM_TYPE => 'string',
 710                         ],
 711                         'badfilecontexttitle' => [
 712                                 ApiBase::PARAM_TYPE => 'string',
 713                         ],
 714                         'continue' => [
 715                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 716                         ],
 717                         'localonly' => false,
 718                 ];
 719         }
 720
 721         /**
 722          * Returns all possible parameters to iiprop
 723          *
 724          * @param array $filter List of properties to filter out
 725          * @return array
 726          */
 727         public static function getPropertyNames( $filter = [] ) {
 728                 return array_keys( static::getPropertyMessages( $filter ) );
 729         }
 730
 731         /**
 732          * Returns messages for all possible parameters to iiprop
 733          *
 734          * @param array $filter List of properties to filter out
 735          * @return array
 736          */
 737         public static function getPropertyMessages( $filter = [] ) {
 738                 return array_diff_key(
 739                         [
 740                                 'timestamp' => 'apihelp-query+imageinfo-paramvalue-prop-timestamp',
 741                                 'user' => 'apihelp-query+imageinfo-paramvalue-prop-user',
 742                                 'userid' => 'apihelp-query+imageinfo-paramvalue-prop-userid',
 743                                 'comment' => 'apihelp-query+imageinfo-paramvalue-prop-comment',
 744                                 'parsedcomment' => 'apihelp-query+imageinfo-paramvalue-prop-parsedcomment',
 745                                 'canonicaltitle' => 'apihelp-query+imageinfo-paramvalue-prop-canonicaltitle',
 746                                 'url' => 'apihelp-query+imageinfo-paramvalue-prop-url',
 747                                 'size' => 'apihelp-query+imageinfo-paramvalue-prop-size',
 748                                 'dimensions' => 'apihelp-query+imageinfo-paramvalue-prop-dimensions',
 749                                 'sha1' => 'apihelp-query+imageinfo-paramvalue-prop-sha1',
 750                                 'mime' => 'apihelp-query+imageinfo-paramvalue-prop-mime',
 751                                 'thumbmime' => 'apihelp-query+imageinfo-paramvalue-prop-thumbmime',
 752                                 'mediatype' => 'apihelp-query+imageinfo-paramvalue-prop-mediatype',
 753                                 'metadata' => 'apihelp-query+imageinfo-paramvalue-prop-metadata',
 754                                 'commonmetadata' => 'apihelp-query+imageinfo-paramvalue-prop-commonmetadata',
 755                                 'extmetadata' => 'apihelp-query+imageinfo-paramvalue-prop-extmetadata',
 756                                 'archivename' => 'apihelp-query+imageinfo-paramvalue-prop-archivename',
 757                                 'bitdepth' => 'apihelp-query+imageinfo-paramvalue-prop-bitdepth',
 758                                 'uploadwarning' => 'apihelp-query+imageinfo-paramvalue-prop-uploadwarning',
 759                                 'badfile' => 'apihelp-query+imageinfo-paramvalue-prop-badfile',
 760                         ],
 761                         array_flip( $filter )
 762                 );
 763         }
 764
 765         /**
 766          * Returns array key value pairs of properties and their descriptions
 767          *
 768          * @deprecated since 1.25
 769          * @param string $modulePrefix
 770          * @return array
 771          */
 772         private static function getProperties( $modulePrefix = '' ) {
 773                 return [
 774                         'timestamp' => ' timestamp     - Adds timestamp for the uploaded version',
 775                         'user' => ' user          - Adds the user who uploaded the image version',
 776                         'userid' => ' userid        - Add the user ID that uploaded the image version',
 777                         'comment' => ' comment       - Comment on the version',
 778                         'parsedcomment' => ' parsedcomment - Parse the comment on the version',
 779                         'canonicaltitle' => ' canonicaltitle - Adds the canonical title of the image file',
 780                         'url' => ' url           - Gives URL to the image and the description page',
 781                         'size' => ' size          - Adds the size of the image in bytes, ' .
 782                                 'its height and its width. Page count and duration are added if applicable',
 783                         'dimensions' => ' dimensions    - Alias for size', // B/C with Allimages
 784                         'sha1' => ' sha1          - Adds SHA-1 hash for the image',
 785                         'mime' => ' mime          - Adds MIME type of the image',
 786                         'thumbmime' => ' thumbmime     - Adds MIME type of the image thumbnail' .
 787                                 ' (requires url and param ' . $modulePrefix . 'urlwidth)',
 788                         'mediatype' => ' mediatype     - Adds the media type of the image',
 789                         'metadata' => ' metadata      - Lists Exif metadata for the version of the image',
 790                         'commonmetadata' => ' commonmetadata - Lists file format generic metadata ' .
 791                                 'for the version of the image',
 792                         'extmetadata' => ' extmetadata   - Lists formatted metadata combined ' .
 793                                 'from multiple sources. Results are HTML formatted.',
 794                         'archivename' => ' archivename   - Adds the file name of the archive ' .
 795                                 'version for non-latest versions',
 796                         'bitdepth' => ' bitdepth      - Adds the bit depth of the version',
 797                         'uploadwarning' => ' uploadwarning - Used by the Special:Upload page to ' .
 798                                 'get information about an existing file. Not intended for use outside MediaWiki core',
 799                 ];
 800         }
 801
 802         /**
 803          * Returns the descriptions for the properties provided by getPropertyNames()
 804          *
 805          * @deprecated since 1.25
 806          * @param array $filter List of properties to filter out
 807          * @param string $modulePrefix
 808          * @return array
 809          */
 810         public static function getPropertyDescriptions( $filter = [], $modulePrefix = '' ) {
 811                 return array_merge(
 812                         [ 'What image information to get:' ],
 813                         array_values( array_diff_key( static::getProperties( $modulePrefix ), array_flip( $filter ) ) )
 814                 );
 815         }
 816
 817         protected function getExamplesMessages() {
 818                 return [
 819                         'action=query&titles=File:Albert%20Einstein%20Head.jpg&prop=imageinfo'
 820                                 => 'apihelp-query+imageinfo-example-simple',
 821                         'action=query&titles=File:Test.jpg&prop=imageinfo&iilimit=50&' .
 822                                 'iiend=2007-12-31T23:59:59Z&iiprop=timestamp|user|url'
 823                                 => 'apihelp-query+imageinfo-example-dated',
 824                 ];
 825         }
 826
 827         public function getHelpUrls() {
 828                 return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Imageinfo';
 829         }
 830 }