includes/api/ApiQueryImageInfo.php

   1 <?php
   2 /**
   3  * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 use MediaWiki\MediaWikiServices;
  24
  25 /**
  26  * A query action to get image information and upload history.
  27  *
  28  * @ingroup API
  29  */
  30 class ApiQueryImageInfo extends ApiQueryBase {
  31         const TRANSFORM_LIMIT = 50;
  32         private static $transformCount = 0;
  33
  34         public function __construct( ApiQuery $query, $moduleName, $prefix = 'ii' ) {
  35                 // We allow a subclass to override the prefix, to create a related API
  36                 // module. Some other parts of MediaWiki construct this with a null
  37                 // $prefix, which used to be ignored when this only took two arguments
  38                 if ( is_null( $prefix ) ) {
  39                         $prefix = 'ii';
  40                 }
  41                 parent::__construct( $query, $moduleName, $prefix );
  42         }
  43
  44         public function execute() {
  45                 $params = $this->extractRequestParams();
  46
  47                 $prop = array_flip( $params['prop'] );
  48
  49                 $scale = $this->getScale( $params );
  50
  51                 $opts = [
  52                         'version' => $params['metadataversion'],
  53                         'language' => $params['extmetadatalanguage'],
  54                         'multilang' => $params['extmetadatamultilang'],
  55                         'extmetadatafilter' => $params['extmetadatafilter'],
  56                         'revdelUser' => $this->getUser(),
  57                 ];
  58
  59                 if ( isset( $params['badfilecontexttitle'] ) ) {
  60                         $badFileContextTitle = Title::newFromText( $params['badfilecontexttitle'] );
  61                         if ( !$badFileContextTitle ) {
  62                                 $p = $this->getModulePrefix();
  63                                 $this->dieWithError( [ 'apierror-bad-badfilecontexttitle', $p ], 'invalid-title' );
  64                         }
  65                 } else {
  66                         $badFileContextTitle = false;
  67                 }
  68
  69                 $pageIds = $this->getPageSet()->getGoodAndMissingTitlesByNamespace();
  70                 if ( !empty( $pageIds[NS_FILE] ) ) {
  71                         $titles = array_keys( $pageIds[NS_FILE] );
  72                         asort( $titles ); // Ensure the order is always the same
  73
  74                         $fromTitle = null;
  75                         if ( !is_null( $params['continue'] ) ) {
  76                                 $cont = explode( '|', $params['continue'] );
  77                                 $this->dieContinueUsageIf( count( $cont ) != 2 );
  78                                 $fromTitle = strval( $cont[0] );
  79                                 $fromTimestamp = $cont[1];
  80                                 // Filter out any titles before $fromTitle
  81                                 foreach ( $titles as $key => $title ) {
  82                                         if ( $title < $fromTitle ) {
  83                                                 unset( $titles[$key] );
  84                                         } else {
  85                                                 break;
  86                                         }
  87                                 }
  88                         }
  89
  90                         $user = $this->getUser();
  91                         $findTitles = array_map( function ( $title ) use ( $user ) {
  92                                 return [
  93                                         'title' => $title,
  94                                         'private' => $user,
  95                                 ];
  96                         }, $titles );
  97
  98                         if ( $params['localonly'] ) {
  99                                 $images = RepoGroup::singleton()->getLocalRepo()->findFiles( $findTitles );
 100                         } else {
 101                                 $images = RepoGroup::singleton()->findFiles( $findTitles );
 102                         }
 103
 104                         $result = $this->getResult();
 105                         foreach ( $titles as $title ) {
 106                                 $info = [];
 107                                 $pageId = $pageIds[NS_FILE][$title];
 108                                 $start = $title === $fromTitle ? $fromTimestamp : $params['start'];
 109
 110                                 if ( !isset( $images[$title] ) ) {
 111                                         if ( isset( $prop['uploadwarning'] ) || isset( $prop['badfile'] ) ) {
 112                                                 // uploadwarning and badfile need info about non-existing files
 113                                                 $images[$title] = wfLocalFile( $title );
 114                                                 // Doesn't exist, so set an empty image repository
 115                                                 $info['imagerepository'] = '';
 116                                         } else {
 117                                                 $result->addValue(
 118                                                         [ 'query', 'pages', (int)$pageId ],
 119                                                         'imagerepository', ''
 120                                                 );
 121                                                 // The above can't fail because it doesn't increase the result size
 122                                                 continue;
 123                                         }
 124                                 }
 125
 126                                 /** @var File $img */
 127                                 $img = $images[$title];
 128
 129                                 if ( self::getTransformCount() >= self::TRANSFORM_LIMIT ) {
 130                                         if ( count( $pageIds[NS_FILE] ) == 1 ) {
 131                                                 // See the 'the user is screwed' comment below
 132                                                 $this->setContinueEnumParameter( 'start',
 133                                                         $start ?? wfTimestamp( TS_ISO_8601, $img->getTimestamp() )
 134                                                 );
 135                                         } else {
 136                                                 $this->setContinueEnumParameter( 'continue',
 137                                                         $this->getContinueStr( $img, $start ) );
 138                                         }
 139                                         break;
 140                                 }
 141
 142                                 if ( !isset( $info['imagerepository'] ) ) {
 143                                         $info['imagerepository'] = $img->getRepoName();
 144                                 }
 145                                 if ( isset( $prop['badfile'] ) ) {
 146                                         $info['badfile'] = (bool)wfIsBadImage( $title, $badFileContextTitle );
 147                                 }
 148
 149                                 $fit = $result->addValue( [ 'query', 'pages' ], (int)$pageId, $info );
 150                                 if ( !$fit ) {
 151                                         if ( count( $pageIds[NS_FILE] ) == 1 ) {
 152                                                 // The user is screwed. imageinfo can't be solely
 153                                                 // responsible for exceeding the limit in this case,
 154                                                 // so set a query-continue that just returns the same
 155                                                 // thing again. When the violating queries have been
 156                                                 // out-continued, the result will get through
 157                                                 $this->setContinueEnumParameter( 'start',
 158                                                         $start ?? wfTimestamp( TS_ISO_8601, $img->getTimestamp() )
 159                                                 );
 160                                         } else {
 161                                                 $this->setContinueEnumParameter( 'continue',
 162                                                         $this->getContinueStr( $img, $start ) );
 163                                         }
 164                                         break;
 165                                 }
 166
 167                                 // Check if we can make the requested thumbnail, and get transform parameters.
 168                                 $finalThumbParams = $this->mergeThumbParams( $img, $scale, $params['urlparam'] );
 169
 170                                 // Get information about the current version first
 171                                 // Check that the current version is within the start-end boundaries
 172                                 $gotOne = false;
 173                                 if (
 174                                         ( is_null( $start ) || $img->getTimestamp() <= $start ) &&
 175                                         ( is_null( $params['end'] ) || $img->getTimestamp() >= $params['end'] )
 176                                 ) {
 177                                         $gotOne = true;
 178
 179                                         $fit = $this->addPageSubItem( $pageId,
 180                                                 static::getInfo( $img, $prop, $result,
 181                                                         $finalThumbParams, $opts
 182                                                 )
 183                                         );
 184                                         if ( !$fit ) {
 185                                                 if ( count( $pageIds[NS_FILE] ) == 1 ) {
 186                                                         // See the 'the user is screwed' comment above
 187                                                         $this->setContinueEnumParameter( 'start',
 188                                                                 wfTimestamp( TS_ISO_8601, $img->getTimestamp() ) );
 189                                                 } else {
 190                                                         $this->setContinueEnumParameter( 'continue',
 191                                                                 $this->getContinueStr( $img ) );
 192                                                 }
 193                                                 break;
 194                                         }
 195                                 }
 196
 197                                 // Now get the old revisions
 198                                 // Get one more to facilitate query-continue functionality
 199                                 $count = ( $gotOne ? 1 : 0 );
 200                                 $oldies = $img->getHistory( $params['limit'] - $count + 1, $start, $params['end'] );
 201                                 /** @var File $oldie */
 202                                 foreach ( $oldies as $oldie ) {
 203                                         if ( ++$count > $params['limit'] ) {
 204                                                 // We've reached the extra one which shows that there are
 205                                                 // additional pages to be had. Stop here...
 206                                                 // Only set a query-continue if there was only one title
 207                                                 if ( count( $pageIds[NS_FILE] ) == 1 ) {
 208                                                         $this->setContinueEnumParameter( 'start',
 209                                                                 wfTimestamp( TS_ISO_8601, $oldie->getTimestamp() ) );
 210                                                 }
 211                                                 break;
 212                                         }
 213                                         $fit = self::getTransformCount() < self::TRANSFORM_LIMIT &&
 214                                                 $this->addPageSubItem( $pageId,
 215                                                         static::getInfo( $oldie, $prop, $result,
 216                                                                 $finalThumbParams, $opts
 217                                                         )
 218                                                 );
 219                                         if ( !$fit ) {
 220                                                 if ( count( $pageIds[NS_FILE] ) == 1 ) {
 221                                                         $this->setContinueEnumParameter( 'start',
 222                                                                 wfTimestamp( TS_ISO_8601, $oldie->getTimestamp() ) );
 223                                                 } else {
 224                                                         $this->setContinueEnumParameter( 'continue',
 225                                                                 $this->getContinueStr( $oldie ) );
 226                                                 }
 227                                                 break;
 228                                         }
 229                                 }
 230                                 if ( !$fit ) {
 231                                         break;
 232                                 }
 233                         }
 234                 }
 235         }
 236
 237         /**
 238          * From parameters, construct a 'scale' array
 239          * @param array $params Parameters passed to api.
 240          * @return array|null Key-val array of 'width' and 'height', or null
 241          */
 242         public function getScale( $params ) {
 243                 if ( $params['urlwidth'] != -1 ) {
 244                         $scale = [];
 245                         $scale['width'] = $params['urlwidth'];
 246                         $scale['height'] = $params['urlheight'];
 247                 } elseif ( $params['urlheight'] != -1 ) {
 248                         // Height is specified but width isn't
 249                         // Don't set $scale['width']; this signals mergeThumbParams() to fill it with the image's width
 250                         $scale = [];
 251                         $scale['height'] = $params['urlheight'];
 252                 } else {
 253                         if ( $params['urlparam'] ) {
 254                                 // Audio files might not have a width/height.
 255                                 $scale = [];
 256                         } else {
 257                                 $scale = null;
 258                         }
 259                 }
 260
 261                 return $scale;
 262         }
 263
 264         /** Validate and merge scale parameters with handler thumb parameters, give error if invalid.
 265          *
 266          * We do this later than getScale, since we need the image
 267          * to know which handler, since handlers can make their own parameters.
 268          * @param File $image Image that params are for.
 269          * @param array $thumbParams Thumbnail parameters from getScale
 270          * @param string $otherParams String of otherParams (iiurlparam).
 271          * @return array Array of parameters for transform.
 272          */
 273         protected function mergeThumbParams( $image, $thumbParams, $otherParams ) {
 274                 if ( $thumbParams === null ) {
 275                         // No scaling requested
 276                         return null;
 277                 }
 278                 if ( !isset( $thumbParams['width'] ) && isset( $thumbParams['height'] ) ) {
 279                         // We want to limit only by height in this situation, so pass the
 280                         // image's full width as the limiting width. But some file types
 281                         // don't have a width of their own, so pick something arbitrary so
 282                         // thumbnailing the default icon works.
 283                         if ( $image->getWidth() <= 0 ) {
 284                                 $thumbParams['width'] = max( $this->getConfig()->get( 'ThumbLimits' ) );
 285                         } else {
 286                                 $thumbParams['width'] = $image->getWidth();
 287                         }
 288                 }
 289
 290                 if ( !$otherParams ) {
 291                         $this->checkParameterNormalise( $image, $thumbParams );
 292                         return $thumbParams;
 293                 }
 294                 $p = $this->getModulePrefix();
 295
 296                 $h = $image->getHandler();
 297                 if ( !$h ) {
 298                         $this->addWarning( [ 'apiwarn-nothumb-noimagehandler', wfEscapeWikiText( $image->getName() ) ] );
 299
 300                         return $thumbParams;
 301                 }
 302
 303                 $paramList = $h->parseParamString( $otherParams );
 304                 if ( !$paramList ) {
 305                         // Just set a warning (instead of dieWithError), as in many cases
 306                         // we could still render the image using width and height parameters,
 307                         // and this type of thing could happen between different versions of
 308                         // handlers.
 309                         $this->addWarning( [ 'apiwarn-badurlparam', $p, wfEscapeWikiText( $image->getName() ) ] );
 310                         $this->checkParameterNormalise( $image, $thumbParams );
 311                         return $thumbParams;
 312                 }
 313
 314                 if ( isset( $paramList['width'] ) && isset( $thumbParams['width'] ) ) {
 315                         if ( (int)$paramList['width'] != (int)$thumbParams['width'] ) {
 316                                 $this->addWarning(
 317                                         [ 'apiwarn-urlparamwidth', $p, $paramList['width'], $thumbParams['width'] ]
 318                                 );
 319                         }
 320                 }
 321
 322                 foreach ( $paramList as $name => $value ) {
 323                         if ( !$h->validateParam( $name, $value ) ) {
 324                                 $this->dieWithError(
 325                                         [ 'apierror-invalidurlparam', $p, wfEscapeWikiText( $name ), wfEscapeWikiText( $value ) ]
 326                                 );
 327                         }
 328                 }
 329
 330                 $finalParams = $thumbParams + $paramList;
 331                 $this->checkParameterNormalise( $image, $finalParams );
 332                 return $finalParams;
 333         }
 334
 335         /**
 336          * Verify that the final image parameters can be normalised.
 337          *
 338          * This doesn't use the normalised parameters, since $file->transform
 339          * expects the pre-normalised parameters, but doing the normalisation
 340          * allows us to catch certain error conditions early (such as missing
 341          * required parameter).
 342          *
 343          * @param File $image
 344          * @param array $finalParams List of parameters to transform image with
 345          */
 346         protected function checkParameterNormalise( $image, $finalParams ) {
 347                 $h = $image->getHandler();
 348                 if ( !$h ) {
 349                         return;
 350                 }
 351                 // Note: normaliseParams modifies the array in place, but we aren't interested
 352                 // in the actual normalised version, only if we can actually normalise them,
 353                 // so we use the functions scope to throw away the normalisations.
 354                 if ( !$h->normaliseParams( $image, $finalParams ) ) {
 355                         $this->dieWithError( [ 'apierror-urlparamnormal', wfEscapeWikiText( $image->getName() ) ] );
 356                 }
 357         }
 358
 359         /**
 360          * Get result information for an image revision
 361          *
 362          * @param File $file
 363          * @param array $prop Array of properties to get (in the keys)
 364          * @param ApiResult $result
 365          * @param array|null $thumbParams Containing 'width' and 'height' items, or null
 366          * @param array|bool|string $opts Options for data fetching.
 367          *   This is an array consisting of the keys:
 368          *    'version': The metadata version for the metadata option
 369          *    'language': The language for extmetadata property
 370          *    'multilang': Return all translations in extmetadata property
 371          *    'revdelUser': User to use when checking whether to show revision-deleted fields.
 372          * @return array Result array
 373          */
 374         public static function getInfo( $file, $prop, $result, $thumbParams = null, $opts = false ) {
 375                 $anyHidden = false;
 376
 377                 if ( !$opts || is_string( $opts ) ) {
 378                         $opts = [
 379                                 'version' => $opts ?: 'latest',
 380                                 'language' => MediaWikiServices::getInstance()->getContentLanguage(),
 381                                 'multilang' => false,
 382                                 'extmetadatafilter' => [],
 383                                 'revdelUser' => null,
 384                         ];
 385                 }
 386                 $version = $opts['version'];
 387                 $vals = [
 388                         ApiResult::META_TYPE => 'assoc',
 389                 ];
 390                 // Timestamp is shown even if the file is revdelete'd in interface
 391                 // so do same here.
 392                 if ( isset( $prop['timestamp'] ) ) {
 393                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $file->getTimestamp() );
 394                 }
 395
 396                 // Handle external callers who don't pass revdelUser
 397                 if ( isset( $opts['revdelUser'] ) && $opts['revdelUser'] ) {
 398                         $revdelUser = $opts['revdelUser'];
 399                         $canShowField = function ( $field ) use ( $file, $revdelUser ) {
 400                                 return $file->userCan( $field, $revdelUser );
 401                         };
 402                 } else {
 403                         $canShowField = function ( $field ) use ( $file ) {
 404                                 return !$file->isDeleted( $field );
 405                         };
 406                 }
 407
 408                 $user = isset( $prop['user'] );
 409                 $userid = isset( $prop['userid'] );
 410
 411                 if ( $user || $userid ) {
 412                         if ( $file->isDeleted( File::DELETED_USER ) ) {
 413                                 $vals['userhidden'] = true;
 414                                 $anyHidden = true;
 415                         }
 416                         if ( $canShowField( File::DELETED_USER ) ) {
 417                                 if ( $user ) {
 418                                         $vals['user'] = $file->getUser();
 419                                 }
 420                                 if ( $userid ) {
 421                                         $vals['userid'] = $file->getUser( 'id' );
 422                                 }
 423                                 if ( !$file->getUser( 'id' ) ) {
 424                                         $vals['anon'] = true;
 425                                 }
 426                         }
 427                 }
 428
 429                 // This is shown even if the file is revdelete'd in interface
 430                 // so do same here.
 431                 if ( isset( $prop['size'] ) || isset( $prop['dimensions'] ) ) {
 432                         $vals['size'] = (int)$file->getSize();
 433                         $vals['width'] = (int)$file->getWidth();
 434                         $vals['height'] = (int)$file->getHeight();
 435
 436                         $pageCount = $file->pageCount();
 437                         if ( $pageCount !== false ) {
 438                                 $vals['pagecount'] = $pageCount;
 439                         }
 440
 441                         // length as in how many seconds long a video is.
 442                         $length = $file->getLength();
 443                         if ( $length ) {
 444                                 // Call it duration, because "length" can be ambiguous.
 445                                 $vals['duration'] = (float)$length;
 446                         }
 447                 }
 448
 449                 $pcomment = isset( $prop['parsedcomment'] );
 450                 $comment = isset( $prop['comment'] );
 451
 452                 if ( $pcomment || $comment ) {
 453                         if ( $file->isDeleted( File::DELETED_COMMENT ) ) {
 454                                 $vals['commenthidden'] = true;
 455                                 $anyHidden = true;
 456                         }
 457                         if ( $canShowField( File::DELETED_COMMENT ) ) {
 458                                 if ( $pcomment ) {
 459                                         $vals['parsedcomment'] = Linker::formatComment(
 460                                                 $file->getDescription( File::RAW ), $file->getTitle() );
 461                                 }
 462                                 if ( $comment ) {
 463                                         $vals['comment'] = $file->getDescription( File::RAW );
 464                                 }
 465                         }
 466                 }
 467
 468                 $canonicaltitle = isset( $prop['canonicaltitle'] );
 469                 $url = isset( $prop['url'] );
 470                 $sha1 = isset( $prop['sha1'] );
 471                 $meta = isset( $prop['metadata'] );
 472                 $extmetadata = isset( $prop['extmetadata'] );
 473                 $commonmeta = isset( $prop['commonmetadata'] );
 474                 $mime = isset( $prop['mime'] );
 475                 $mediatype = isset( $prop['mediatype'] );
 476                 $archive = isset( $prop['archivename'] );
 477                 $bitdepth = isset( $prop['bitdepth'] );
 478                 $uploadwarning = isset( $prop['uploadwarning'] );
 479
 480                 if ( $uploadwarning ) {
 481                         $vals['html'] = SpecialUpload::getExistsWarning( UploadBase::getExistsWarning( $file ) );
 482                 }
 483
 484                 if ( $file->isDeleted( File::DELETED_FILE ) ) {
 485                         $vals['filehidden'] = true;
 486                         $anyHidden = true;
 487                 }
 488
 489                 if ( $anyHidden && $file->isDeleted( File::DELETED_RESTRICTED ) ) {
 490                         $vals['suppressed'] = true;
 491                 }
 492
 493                 if ( !$canShowField( File::DELETED_FILE ) ) {
 494                         // Early return, tidier than indenting all following things one level
 495                         return $vals;
 496                 }
 497
 498                 if ( $canonicaltitle ) {
 499                         $vals['canonicaltitle'] = $file->getTitle()->getPrefixedText();
 500                 }
 501
 502                 if ( $url ) {
 503                         if ( $file->exists() ) {
 504                                 if ( !is_null( $thumbParams ) ) {
 505                                         $mto = $file->transform( $thumbParams );
 506                                         self::$transformCount++;
 507                                         if ( $mto && !$mto->isError() ) {
 508                                                 $vals['thumburl'] = wfExpandUrl( $mto->getUrl(), PROTO_CURRENT );
 509
 510                                                 // T25834 - If the URLs are the same, we haven't resized it, so shouldn't give the wanted
 511                                                 // thumbnail sizes for the thumbnail actual size
 512                                                 if ( $mto->getUrl() !== $file->getUrl() ) {
 513                                                         $vals['thumbwidth'] = (int)$mto->getWidth();
 514                                                         $vals['thumbheight'] = (int)$mto->getHeight();
 515                                                 } else {
 516                                                         $vals['thumbwidth'] = (int)$file->getWidth();
 517                                                         $vals['thumbheight'] = (int)$file->getHeight();
 518                                                 }
 519
 520                                                 if ( isset( $prop['thumbmime'] ) && $file->getHandler() ) {
 521                                                         list( , $mime ) = $file->getHandler()->getThumbType(
 522                                                                 $mto->getExtension(), $file->getMimeType(), $thumbParams );
 523                                                         $vals['thumbmime'] = $mime;
 524                                                 }
 525                                         } elseif ( $mto && $mto->isError() ) {
 526                                                 $vals['thumberror'] = $mto->toText();
 527                                         }
 528                                 }
 529                                 $vals['url'] = wfExpandUrl( $file->getFullUrl(), PROTO_CURRENT );
 530                         } else {
 531                                 $vals['filemissing'] = true;
 532                         }
 533                         $vals['descriptionurl'] = wfExpandUrl( $file->getDescriptionUrl(), PROTO_CURRENT );
 534
 535                         $shortDescriptionUrl = $file->getDescriptionShortUrl();
 536                         if ( $shortDescriptionUrl !== null ) {
 537                                 $vals['descriptionshorturl'] = wfExpandUrl( $shortDescriptionUrl, PROTO_CURRENT );
 538                         }
 539                 }
 540
 541                 if ( $sha1 ) {
 542                         $vals['sha1'] = Wikimedia\base_convert( $file->getSha1(), 36, 16, 40 );
 543                 }
 544
 545                 if ( $meta ) {
 546                         Wikimedia\suppressWarnings();
 547                         $metadata = unserialize( $file->getMetadata() );
 548                         Wikimedia\restoreWarnings();
 549                         if ( $metadata && $version !== 'latest' ) {
 550                                 $metadata = $file->convertMetadataVersion( $metadata, $version );
 551                         }
 552                         $vals['metadata'] = $metadata ? static::processMetaData( $metadata, $result ) : null;
 553                 }
 554                 if ( $commonmeta ) {
 555                         $metaArray = $file->getCommonMetaArray();
 556                         $vals['commonmetadata'] = $metaArray ? static::processMetaData( $metaArray, $result ) : [];
 557                 }
 558
 559                 if ( $extmetadata ) {
 560                         // Note, this should return an array where all the keys
 561                         // start with a letter, and all the values are strings.
 562                         // Thus there should be no issue with format=xml.
 563                         $format = new FormatMetadata;
 564                         $format->setSingleLanguage( !$opts['multilang'] );
 565                         $format->getContext()->setLanguage( $opts['language'] );
 566                         $extmetaArray = $format->fetchExtendedMetadata( $file );
 567                         if ( $opts['extmetadatafilter'] ) {
 568                                 $extmetaArray = array_intersect_key(
 569                                         $extmetaArray, array_flip( $opts['extmetadatafilter'] )
 570                                 );
 571                         }
 572                         $vals['extmetadata'] = $extmetaArray;
 573                 }
 574
 575                 if ( $mime ) {
 576                         $vals['mime'] = $file->getMimeType();
 577                 }
 578
 579                 if ( $mediatype ) {
 580                         $vals['mediatype'] = $file->getMediaType();
 581                 }
 582
 583                 if ( $archive && $file->isOld() ) {
 584                         $vals['archivename'] = $file->getArchiveName();
 585                 }
 586
 587                 if ( $bitdepth ) {
 588                         $vals['bitdepth'] = $file->getBitDepth();
 589                 }
 590
 591                 return $vals;
 592         }
 593
 594         /**
 595          * Get the count of image transformations performed
 596          *
 597          * If this is >= TRANSFORM_LIMIT, you should probably stop processing images.
 598          *
 599          * @return int Count
 600          */
 601         static function getTransformCount() {
 602                 return self::$transformCount;
 603         }
 604
 605         /**
 606          *
 607          * @param array $metadata
 608          * @param ApiResult $result
 609          * @return array
 610          */
 611         public static function processMetaData( $metadata, $result ) {
 612                 $retval = [];
 613                 if ( is_array( $metadata ) ) {
 614                         foreach ( $metadata as $key => $value ) {
 615                                 $r = [
 616                                         'name' => $key,
 617                                         ApiResult::META_BC_BOOLS => [ 'value' ],
 618                                 ];
 619                                 if ( is_array( $value ) ) {
 620                                         $r['value'] = static::processMetaData( $value, $result );
 621                                 } else {
 622                                         $r['value'] = $value;
 623                                 }
 624                                 $retval[] = $r;
 625                         }
 626                 }
 627                 ApiResult::setIndexedTagName( $retval, 'metadata' );
 628
 629                 return $retval;
 630         }
 631
 632         public function getCacheMode( $params ) {
 633                 if ( $this->userCanSeeRevDel() ) {
 634                         return 'private';
 635                 }
 636
 637                 return 'public';
 638         }
 639
 640         /**
 641          * @param File $img
 642          * @param null|string $start
 643          * @return string
 644          */
 645         protected function getContinueStr( $img, $start = null ) {
 646                 if ( $start === null ) {
 647                         $start = $img->getTimestamp();
 648                 }
 649
 650                 return $img->getOriginalTitle()->getDBkey() . '|' . $start;
 651         }
 652
 653         public function getAllowedParams() {
 654                 return [
 655                         'prop' => [
 656                                 ApiBase::PARAM_ISMULTI => true,
 657                                 ApiBase::PARAM_DFLT => 'timestamp|user',
 658                                 ApiBase::PARAM_TYPE => static::getPropertyNames(),
 659                                 ApiBase::PARAM_HELP_MSG_PER_VALUE => static::getPropertyMessages(),
 660                         ],
 661                         'limit' => [
 662                                 ApiBase::PARAM_TYPE => 'limit',
 663                                 ApiBase::PARAM_DFLT => 1,
 664                                 ApiBase::PARAM_MIN => 1,
 665                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 666                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 667                         ],
 668                         'start' => [
 669                                 ApiBase::PARAM_TYPE => 'timestamp'
 670                         ],
 671                         'end' => [
 672                                 ApiBase::PARAM_TYPE => 'timestamp'
 673                         ],
 674                         'urlwidth' => [
 675                                 ApiBase::PARAM_TYPE => 'integer',
 676                                 ApiBase::PARAM_DFLT => -1,
 677                                 ApiBase::PARAM_HELP_MSG => [
 678                                         'apihelp-query+imageinfo-param-urlwidth',
 679                                         self::TRANSFORM_LIMIT,
 680                                 ],
 681                         ],
 682                         'urlheight' => [
 683                                 ApiBase::PARAM_TYPE => 'integer',
 684                                 ApiBase::PARAM_DFLT => -1
 685                         ],
 686                         'metadataversion' => [
 687                                 ApiBase::PARAM_TYPE => 'string',
 688                                 ApiBase::PARAM_DFLT => '1',
 689                         ],
 690                         'extmetadatalanguage' => [
 691                                 ApiBase::PARAM_TYPE => 'string',
 692                                 ApiBase::PARAM_DFLT =>
 693                                         MediaWikiServices::getInstance()->getContentLanguage()->getCode(),
 694                         ],
 695                         'extmetadatamultilang' => [
 696                                 ApiBase::PARAM_TYPE => 'boolean',
 697                                 ApiBase::PARAM_DFLT => false,
 698                         ],
 699                         'extmetadatafilter' => [
 700                                 ApiBase::PARAM_TYPE => 'string',
 701                                 ApiBase::PARAM_ISMULTI => true,
 702                         ],
 703                         'urlparam' => [
 704                                 ApiBase::PARAM_DFLT => '',
 705                                 ApiBase::PARAM_TYPE => 'string',
 706                         ],
 707                         'badfilecontexttitle' => [
 708                                 ApiBase::PARAM_TYPE => 'string',
 709                         ],
 710                         'continue' => [
 711                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 712                         ],
 713                         'localonly' => false,
 714                 ];
 715         }
 716
 717         /**
 718          * Returns all possible parameters to iiprop
 719          *
 720          * @param array $filter List of properties to filter out
 721          * @return array
 722          */
 723         public static function getPropertyNames( $filter = [] ) {
 724                 return array_keys( static::getPropertyMessages( $filter ) );
 725         }
 726
 727         /**
 728          * Returns messages for all possible parameters to iiprop
 729          *
 730          * @param array $filter List of properties to filter out
 731          * @return array
 732          */
 733         public static function getPropertyMessages( $filter = [] ) {
 734                 return array_diff_key(
 735                         [
 736                                 'timestamp' => 'apihelp-query+imageinfo-paramvalue-prop-timestamp',
 737                                 'user' => 'apihelp-query+imageinfo-paramvalue-prop-user',
 738                                 'userid' => 'apihelp-query+imageinfo-paramvalue-prop-userid',
 739                                 'comment' => 'apihelp-query+imageinfo-paramvalue-prop-comment',
 740                                 'parsedcomment' => 'apihelp-query+imageinfo-paramvalue-prop-parsedcomment',
 741                                 'canonicaltitle' => 'apihelp-query+imageinfo-paramvalue-prop-canonicaltitle',
 742                                 'url' => 'apihelp-query+imageinfo-paramvalue-prop-url',
 743                                 'size' => 'apihelp-query+imageinfo-paramvalue-prop-size',
 744                                 'dimensions' => 'apihelp-query+imageinfo-paramvalue-prop-dimensions',
 745                                 'sha1' => 'apihelp-query+imageinfo-paramvalue-prop-sha1',
 746                                 'mime' => 'apihelp-query+imageinfo-paramvalue-prop-mime',
 747                                 'thumbmime' => 'apihelp-query+imageinfo-paramvalue-prop-thumbmime',
 748                                 'mediatype' => 'apihelp-query+imageinfo-paramvalue-prop-mediatype',
 749                                 'metadata' => 'apihelp-query+imageinfo-paramvalue-prop-metadata',
 750                                 'commonmetadata' => 'apihelp-query+imageinfo-paramvalue-prop-commonmetadata',
 751                                 'extmetadata' => 'apihelp-query+imageinfo-paramvalue-prop-extmetadata',
 752                                 'archivename' => 'apihelp-query+imageinfo-paramvalue-prop-archivename',
 753                                 'bitdepth' => 'apihelp-query+imageinfo-paramvalue-prop-bitdepth',
 754                                 'uploadwarning' => 'apihelp-query+imageinfo-paramvalue-prop-uploadwarning',
 755                                 'badfile' => 'apihelp-query+imageinfo-paramvalue-prop-badfile',
 756                         ],
 757                         array_flip( $filter )
 758                 );
 759         }
 760
 761         /**
 762          * Returns array key value pairs of properties and their descriptions
 763          *
 764          * @deprecated since 1.25
 765          * @param string $modulePrefix
 766          * @return array
 767          */
 768         private static function getProperties( $modulePrefix = '' ) {
 769                 return [
 770                         'timestamp' => ' timestamp     - Adds timestamp for the uploaded version',
 771                         'user' => ' user          - Adds the user who uploaded the image version',
 772                         'userid' => ' userid        - Add the user ID that uploaded the image version',
 773                         'comment' => ' comment       - Comment on the version',
 774                         'parsedcomment' => ' parsedcomment - Parse the comment on the version',
 775                         'canonicaltitle' => ' canonicaltitle - Adds the canonical title of the image file',
 776                         'url' => ' url           - Gives URL to the image and the description page',
 777                         'size' => ' size          - Adds the size of the image in bytes, ' .
 778                                 'its height and its width. Page count and duration are added if applicable',
 779                         'dimensions' => ' dimensions    - Alias for size', // B/C with Allimages
 780                         'sha1' => ' sha1          - Adds SHA-1 hash for the image',
 781                         'mime' => ' mime          - Adds MIME type of the image',
 782                         'thumbmime' => ' thumbmime     - Adds MIME type of the image thumbnail' .
 783                                 ' (requires url and param ' . $modulePrefix . 'urlwidth)',
 784                         'mediatype' => ' mediatype     - Adds the media type of the image',
 785                         'metadata' => ' metadata      - Lists Exif metadata for the version of the image',
 786                         'commonmetadata' => ' commonmetadata - Lists file format generic metadata ' .
 787                                 'for the version of the image',
 788                         'extmetadata' => ' extmetadata   - Lists formatted metadata combined ' .
 789                                 'from multiple sources. Results are HTML formatted.',
 790                         'archivename' => ' archivename   - Adds the file name of the archive ' .
 791                                 'version for non-latest versions',
 792                         'bitdepth' => ' bitdepth      - Adds the bit depth of the version',
 793                         'uploadwarning' => ' uploadwarning - Used by the Special:Upload page to ' .
 794                                 'get information about an existing file. Not intended for use outside MediaWiki core',
 795                 ];
 796         }
 797
 798         /**
 799          * Returns the descriptions for the properties provided by getPropertyNames()
 800          *
 801          * @deprecated since 1.25
 802          * @param array $filter List of properties to filter out
 803          * @param string $modulePrefix
 804          * @return array
 805          */
 806         public static function getPropertyDescriptions( $filter = [], $modulePrefix = '' ) {
 807                 return array_merge(
 808                         [ 'What image information to get:' ],
 809                         array_values( array_diff_key( static::getProperties( $modulePrefix ), array_flip( $filter ) ) )
 810                 );
 811         }
 812
 813         protected function getExamplesMessages() {
 814                 return [
 815                         'action=query&titles=File:Albert%20Einstein%20Head.jpg&prop=imageinfo'
 816                                 => 'apihelp-query+imageinfo-example-simple',
 817                         'action=query&titles=File:Test.jpg&prop=imageinfo&iilimit=50&' .
 818                                 'iiend=2007-12-31T23:59:59Z&iiprop=timestamp|user|url'
 819                                 => 'apihelp-query+imageinfo-example-dated',
 820                 ];
 821         }
 822
 823         public function getHelpUrls() {
 824                 return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Imageinfo';
 825         }
 826 }