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1<?php
2/**
3 * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
4 *
5 * @license GPL-2.0-or-later
6 * @file
7 */
8
9namespace MediaWiki\Api;
10
11use FormatMetadata;
12use MediaTransformError;
13use MediaWiki\FileRepo\File\File;
14use MediaWiki\FileRepo\File\OldLocalFile;
15use MediaWiki\FileRepo\RepoGroup;
16use MediaWiki\Language\Language;
17use MediaWiki\Linker\Linker;
18use MediaWiki\MainConfigNames;
19use MediaWiki\MediaWikiServices;
20use MediaWiki\Page\File\BadFileLookup;
21use MediaWiki\Specials\SpecialUpload;
22use MediaWiki\Title\Title;
23use MediaWiki\Upload\UploadBase;
24use Wikimedia\ParamValidator\ParamValidator;
25use Wikimedia\ParamValidator\TypeDef\IntegerDef;
26
27/**
28 * A query action to get image information and upload history.
29 *
30 * @ingroup API
31 */
32class ApiQueryImageInfo extends ApiQueryBase {
33    public const TRANSFORM_LIMIT = 50;
34    /** @var int */
35    private static $transformCount = 0;
36
37    private RepoGroup $repoGroup;
38    private Language $contentLanguage;
39    private BadFileLookup $badFileLookup;
40
41    /**
42     * @param ApiQuery $query
43     * @param string $moduleName
44     * @param string|RepoGroup|null $prefixOrRepoGroup
45     * @param RepoGroup|Language|null $repoGroupOrContentLanguage
46     * @param Language|BadFileLookup|null $contentLanguageOrBadFileLookup
47     * @param BadFileLookup|null $badFileLookupOrUnused
48     */
49    public function __construct(
50        ApiQuery $query,
51        string $moduleName,
52        $prefixOrRepoGroup = null,
53        $repoGroupOrContentLanguage = null,
54        $contentLanguageOrBadFileLookup = null,
55        $badFileLookupOrUnused = null
56    ) {
57        // We allow a subclass to override the prefix, to create a related API module.
58        // The ObjectFactory is injecting the services without the prefix.
59        if ( !is_string( $prefixOrRepoGroup ) ) {
60            $prefix = 'ii';
61            $repoGroup = $prefixOrRepoGroup;
62            $contentLanguage = $repoGroupOrContentLanguage;
63            $badFileLookup = $contentLanguageOrBadFileLookup;
64            // $badFileLookupOrUnused is null in this case
65        } else {
66            $prefix = $prefixOrRepoGroup;
67            $repoGroup = $repoGroupOrContentLanguage;
68            $contentLanguage = $contentLanguageOrBadFileLookup;
69            $badFileLookup = $badFileLookupOrUnused;
70        }
71        parent::__construct( $query, $moduleName, $prefix );
72        // This class is extended and therefor fallback to global state - T259960
73        $services = MediaWikiServices::getInstance();
74        $this->repoGroup = $repoGroup ?? $services->getRepoGroup();
75        $this->contentLanguage = $contentLanguage ?? $services->getContentLanguage();
76        $this->badFileLookup = $badFileLookup ?? $services->getBadFileLookup();
77    }
78
79    public function execute() {
80        $params = $this->extractRequestParams();
81
82        /** @var array<string,true> $prop */
83        $prop = array_fill_keys( $params['prop'], true );
84
85        $scale = $this->getScale( $params );
86
87        $opts = [
88            'version' => $params['metadataversion'],
89            'language' => $params['extmetadatalanguage'],
90            'multilang' => $params['extmetadatamultilang'],
91            'extmetadatafilter' => $params['extmetadatafilter'],
92            'revdelUser' => $this->getAuthority(),
93        ];
94
95        if ( isset( $params['badfilecontexttitle'] ) ) {
96            $badFileContextTitle = Title::newFromText( $params['badfilecontexttitle'] );
97            if ( !$badFileContextTitle || $badFileContextTitle->isExternal() ) {
98                $p = $this->getModulePrefix();
99                $this->dieWithError( [ 'apierror-bad-badfilecontexttitle', $p ], 'invalid-title' );
100            }
101        } else {
102            $badFileContextTitle = null;
103        }
104
105        $pageIds = $this->getPageSet()->getGoodAndMissingTitlesByNamespace();
106        if ( !empty( $pageIds[NS_FILE] ) ) {
107            $titles = array_keys( $pageIds[NS_FILE] );
108            asort( $titles ); // Ensure the order is always the same
109
110            $fromTitle = null;
111            if ( $params['continue'] !== null ) {
112                $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'string', 'string' ] );
113                $fromTitle = $cont[0];
114                $fromTimestamp = $cont[1];
115                // Filter out any titles before $fromTitle
116                foreach ( $titles as $key => $title ) {
117                    if ( $title < $fromTitle ) {
118                        unset( $titles[$key] );
119                    } else {
120                        break;
121                    }
122                }
123            }
124
125            $performer = $this->getAuthority();
126            $findTitles = array_map( static function ( $title ) use ( $performer ) {
127                return [
128                    'title' => $title,
129                    'private' => $performer,
130                ];
131            }, $titles );
132
133            if ( $params['localonly'] ) {
134                $images = $this->repoGroup->getLocalRepo()->findFiles( $findTitles );
135            } else {
136                $images = $this->repoGroup->findFiles( $findTitles );
137            }
138
139            $result = $this->getResult();
140            foreach ( $titles as $title ) {
141                $info = [];
142                $pageId = $pageIds[NS_FILE][$title];
143                // @phan-suppress-next-next-line PhanPossiblyUndeclaredVariable
144                // $fromTimestamp declared when $fromTitle notnull
145                $start = $title === $fromTitle ? $fromTimestamp : $params['start'];
146
147                if ( !isset( $images[$title] ) ) {
148                    if ( isset( $prop['uploadwarning'] ) || isset( $prop['badfile'] ) ) {
149                        // uploadwarning and badfile need info about non-existing files
150                        $images[$title] = $this->repoGroup->getLocalRepo()->newFile( $title );
151                        // Doesn't exist, so set an empty image repository
152                        $info['imagerepository'] = '';
153                    } else {
154                        $result->addValue(
155                            [ 'query', 'pages', (int)$pageId ],
156                            'imagerepository', ''
157                        );
158                        // The above can't fail because it doesn't increase the result size
159                        continue;
160                    }
161                }
162
163                /** @var File $img */
164                $img = $images[$title];
165
166                if ( self::getTransformCount() >= self::TRANSFORM_LIMIT ) {
167                    if ( count( $pageIds[NS_FILE] ) == 1 ) {
168                        // See the 'the user is screwed' comment below
169                        $this->setContinueEnumParameter( 'start',
170                            $start ?? wfTimestamp( TS_ISO_8601, $img->getTimestamp() )
171                        );
172                    } else {
173                        $this->setContinueEnumParameter( 'continue',
174                            $this->getContinueStr( $img, $start ) );
175                    }
176                    break;
177                }
178
179                if ( !isset( $info['imagerepository'] ) ) {
180                    $info['imagerepository'] = $img->getRepoName();
181                }
182                if ( isset( $prop['badfile'] ) ) {
183                    $info['badfile'] = (bool)$this->badFileLookup->isBadFile( $title, $badFileContextTitle );
184                }
185
186                // Use ApiResult::IGNORE_CONFLICT_KEYS, the module is extended and the value can be set twice (T402438)
187                $fit = $result->addValue( [ 'query', 'pages' ], (int)$pageId, $info, ApiResult::IGNORE_CONFLICT_KEYS );
188                if ( !$fit ) {
189                    if ( count( $pageIds[NS_FILE] ) == 1 ) {
190                        // The user is screwed. imageinfo can't be solely
191                        // responsible for exceeding the limit in this case,
192                        // so set a query-continue that just returns the same
193                        // thing again. When the violating queries have been
194                        // out-continued, the result will get through
195                        $this->setContinueEnumParameter( 'start',
196                            $start ?? wfTimestamp( TS_ISO_8601, $img->getTimestamp() )
197                        );
198                    } else {
199                        $this->setContinueEnumParameter( 'continue',
200                            $this->getContinueStr( $img, $start ) );
201                    }
202                    break;
203                }
204
205                // Check if we can make the requested thumbnail, and get transform parameters.
206                $finalThumbParams = $this->mergeThumbParams( $img, $scale, $params['urlparam'] );
207
208                // Parser::makeImage always sets a targetlang, usually based on the language
209                // the content is in.  To support Parsoid's standalone mode, overload the badfilecontexttitle
210                // to also set the targetlang based on the page language.  Don't add this unless we're
211                // already scaling since a set $finalThumbParams usually expects a width.
212                if ( $badFileContextTitle && $finalThumbParams ) {
213                    $finalThumbParams['targetlang'] = $badFileContextTitle->getPageLanguage()->getCode();
214                }
215
216                // Get information about the current version first
217                // Check that the current version is within the start-end boundaries
218                $gotOne = false;
219                if (
220                    ( $start === null || $img->getTimestamp() <= $start ) &&
221                    ( $params['end'] === null || $img->getTimestamp() >= $params['end'] )
222                ) {
223                    $gotOne = true;
224
225                    $fit = $this->addPageSubItem( $pageId,
226                        static::getInfo( $img, $prop, $result,
227                            $finalThumbParams, $opts
228                        )
229                    );
230                    if ( !$fit ) {
231                        if ( count( $pageIds[NS_FILE] ) == 1 ) {
232                            // See the 'the user is screwed' comment above
233                            $this->setContinueEnumParameter( 'start',
234                                wfTimestamp( TS_ISO_8601, $img->getTimestamp() ) );
235                        } else {
236                            $this->setContinueEnumParameter( 'continue',
237                                $this->getContinueStr( $img ) );
238                        }
239                        break;
240                    }
241                }
242
243                // Now get the old revisions
244                // Get one more to facilitate query-continue functionality
245                $count = ( $gotOne ? 1 : 0 );
246                $oldies = $img->getHistory( $params['limit'] - $count + 1, $start, $params['end'] );
247                /** @var File $oldie */
248                foreach ( $oldies as $oldie ) {
249                    if ( ++$count > $params['limit'] ) {
250                        // We've reached the extra one which shows that there are
251                        // additional pages to be had. Stop here...
252                        // Only set a query-continue if there was only one title
253                        if ( count( $pageIds[NS_FILE] ) == 1 ) {
254                            $this->setContinueEnumParameter( 'start',
255                                wfTimestamp( TS_ISO_8601, $oldie->getTimestamp() ) );
256                        }
257                        break;
258                    }
259                    $fit = self::getTransformCount() < self::TRANSFORM_LIMIT &&
260                        $this->addPageSubItem( $pageId,
261                            static::getInfo( $oldie, $prop, $result,
262                                $finalThumbParams, $opts
263                            )
264                        );
265                    if ( !$fit ) {
266                        if ( count( $pageIds[NS_FILE] ) == 1 ) {
267                            $this->setContinueEnumParameter( 'start',
268                                wfTimestamp( TS_ISO_8601, $oldie->getTimestamp() ) );
269                        } else {
270                            $this->setContinueEnumParameter( 'continue',
271                                $this->getContinueStr( $oldie ) );
272                        }
273                        break;
274                    }
275                }
276                if ( !$fit ) {
277                    break;
278                }
279            }
280        }
281    }
282
283    /**
284     * From parameters, construct a 'scale' array
285     * @param array $params Parameters passed to api.
286     * @return array|null Key-val array of 'width' and 'height', or null
287     */
288    public function getScale( $params ) {
289        if ( $params['urlwidth'] != -1 ) {
290            return [ 'width' => $params['urlwidth'], 'height' => $params['urlheight'] ];
291        } elseif ( $params['urlheight'] != -1 ) {
292            // Height is specified but width isn't
293            // Don't set $scale['width']; this signals mergeThumbParams() to fill it with the image's width
294            return [ 'height' => $params['urlheight'] ];
295        } elseif ( $params['urlparam'] ) {
296            // Audio files might not have a width/height.
297            return [];
298        } else {
299            return null;
300        }
301    }
302
303    /** Validate and merge scale parameters with handler thumb parameters, give error if invalid.
304     *
305     * We do this later than getScale, since we need the image
306     * to know which handler, since handlers can make their own parameters.
307     * @param File $image Image that params are for.
308     * @param array|null $thumbParams Thumbnail parameters from getScale
309     * @param string $otherParams String of otherParams (iiurlparam).
310     * @return array|null Array of parameters for transform.
311     */
312    protected function mergeThumbParams( $image, $thumbParams, $otherParams ) {
313        if ( $thumbParams === null ) {
314            // No scaling requested
315            return null;
316        }
317        if ( !isset( $thumbParams['width'] ) && isset( $thumbParams['height'] ) ) {
318            // We want to limit only by height in this situation, so pass the
319            // image's full width as the limiting width. But some file types
320            // don't have a width of their own, or are scalable, so pick
321            // something arbitrary so thumbnailing the default icon works.
322            if ( $image->getWidth() <= 0 || $image->isVectorized() ) {
323                $thumbParams['width'] =
324                    max( $this->getConfig()->get( MainConfigNames::ThumbLimits ) );
325            } else {
326                $thumbParams['width'] = $image->getWidth();
327            }
328        }
329
330        if ( !$otherParams ) {
331            $this->checkParameterNormalise( $image, $thumbParams );
332            return $thumbParams;
333        }
334        $p = $this->getModulePrefix();
335
336        $h = $image->getHandler();
337        if ( !$h ) {
338            $this->addWarning( [ 'apiwarn-nothumb-noimagehandler', wfEscapeWikiText( $image->getName() ) ] );
339
340            return $thumbParams;
341        }
342
343        $paramList = $h->parseParamString( $otherParams );
344        if ( !$paramList ) {
345            // Just set a warning (instead of dieWithError), as in many cases
346            // we could still render the image using width and height parameters,
347            // and this type of thing could happen between different versions of
348            // handlers.
349            $this->addWarning( [ 'apiwarn-badurlparam', $p, wfEscapeWikiText( $image->getName() ) ] );
350            $this->checkParameterNormalise( $image, $thumbParams );
351            return $thumbParams;
352        }
353
354        if (
355            isset( $paramList['width'] ) && isset( $thumbParams['width'] ) &&
356            (int)$paramList['width'] != (int)$thumbParams['width']
357        ) {
358            $this->addWarning(
359                [ 'apiwarn-urlparamwidth', $p, $paramList['width'], $thumbParams['width'] ]
360            );
361        }
362
363        foreach ( $paramList as $name => $value ) {
364            if ( !$h->validateParam( $name, $value ) ) {
365                $this->dieWithError(
366                    [ 'apierror-invalidurlparam', $p, wfEscapeWikiText( $name ), wfEscapeWikiText( $value ) ]
367                );
368            }
369        }
370
371        $finalParams = $thumbParams + $paramList;
372        $this->checkParameterNormalise( $image, $finalParams );
373        return $finalParams;
374    }
375
376    /**
377     * Verify that the final image parameters can be normalised.
378     *
379     * This doesn't use the normalised parameters, since $file->transform
380     * expects the pre-normalised parameters, but doing the normalisation
381     * allows us to catch certain error conditions early (such as missing
382     * required parameter).
383     *
384     * @param File $image
385     * @param array $finalParams List of parameters to transform image with
386     */
387    protected function checkParameterNormalise( $image, $finalParams ) {
388        $h = $image->getHandler();
389        if ( !$h ) {
390            return;
391        }
392        // Note: normaliseParams modifies the array in place, but we aren't interested
393        // in the actual normalised version, only if we can actually normalise them,
394        // so we use the functions scope to throw away the normalisations.
395        if ( !$h->normaliseParams( $image, $finalParams ) ) {
396            $this->dieWithError( [ 'apierror-urlparamnormal', wfEscapeWikiText( $image->getName() ) ] );
397        }
398    }
399
400    /**
401     * Get result information for an image revision
402     *
403     * @param File $file
404     * @param array<string,true> $prop Array of properties to get (in the keys)
405     * @param ApiResult $result
406     * @param array|null $thumbParams Containing 'width' and 'height' items, or null
407     * @param array|false|string $opts Options for data fetching.
408     *   This is an array consisting of the keys:
409     *    'version': The metadata version for the metadata option
410     *    'language': The language for extmetadata property
411     *    'multilang': Return all translations in extmetadata property
412     *    'revdelUser': Authority to use when checking whether to show revision-deleted fields.
413     * @return array
414     */
415    public static function getInfo( $file, $prop, $result, $thumbParams = null, $opts = false ) {
416        $anyHidden = false;
417
418        $services = MediaWikiServices::getInstance();
419
420        if ( !$opts || is_string( $opts ) ) {
421            $opts = [
422                'version' => $opts ?: 'latest',
423                'language' => $services->getContentLanguage(),
424                'multilang' => false,
425                'extmetadatafilter' => [],
426                'revdelUser' => null,
427            ];
428        }
429        $version = $opts['version'];
430        $vals = [
431            ApiResult::META_TYPE => 'assoc',
432        ];
433
434        // Some information will be unavailable if the file does not exist. T221812
435        $exists = $file->exists();
436
437        // Timestamp is shown even if the file is revdelete'd in interface
438        // so do same here.
439        if ( isset( $prop['timestamp'] ) && $exists ) {
440            $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $file->getTimestamp() );
441        }
442
443        // Handle external callers who don't pass revdelUser
444        if ( isset( $opts['revdelUser'] ) && $opts['revdelUser'] ) {
445            $revdelUser = $opts['revdelUser'];
446            $canShowField = static function ( $field ) use ( $file, $revdelUser ) {
447                return $file->userCan( $field, $revdelUser );
448            };
449        } else {
450            $canShowField = static function ( $field ) use ( $file ) {
451                return !$file->isDeleted( $field );
452            };
453        }
454
455        $user = isset( $prop['user'] );
456        $userid = isset( $prop['userid'] );
457
458        if ( ( $user || $userid ) && $exists ) {
459            if ( $file->isDeleted( File::DELETED_USER ) ) {
460                $vals['userhidden'] = true;
461                $anyHidden = true;
462            }
463            if ( $canShowField( File::DELETED_USER ) ) {
464                // Already checked if the field can be show
465                $uploader = $file->getUploader( File::RAW );
466                if ( $user ) {
467                    $vals['user'] = $uploader ? $uploader->getName() : '';
468                }
469                if ( $userid ) {
470                    $vals['userid'] = $uploader ? $uploader->getId() : 0;
471                }
472                if ( $uploader && $services->getUserNameUtils()->isTemp( $uploader->getName() ) ) {
473                    $vals['temp'] = true;
474                }
475                if ( $uploader && !$uploader->isRegistered() ) {
476                    $vals['anon'] = true;
477                }
478            }
479        }
480
481        // This is shown even if the file is revdelete'd in interface
482        // so do same here.
483        if ( ( isset( $prop['size'] ) || isset( $prop['dimensions'] ) ) && $exists ) {
484            $vals['size'] = (int)$file->getSize();
485            $vals['width'] = (int)$file->getWidth();
486            $vals['height'] = (int)$file->getHeight();
487
488            $pageCount = $file->pageCount();
489            if ( $pageCount !== false ) {
490                $vals['pagecount'] = $pageCount;
491            }
492
493            // length as in how many seconds long a video is.
494            $length = $file->getLength();
495            if ( $length ) {
496                // Call it duration, because "length" can be ambiguous.
497                $vals['duration'] = (float)$length;
498            }
499        }
500
501        $pcomment = isset( $prop['parsedcomment'] );
502        $comment = isset( $prop['comment'] );
503
504        if ( ( $pcomment || $comment ) && $exists ) {
505            if ( $file->isDeleted( File::DELETED_COMMENT ) ) {
506                $vals['commenthidden'] = true;
507                $anyHidden = true;
508            }
509            if ( $canShowField( File::DELETED_COMMENT ) ) {
510                if ( $pcomment ) {
511                    $vals['parsedcomment'] = $services->getCommentFormatter()->format(
512                        $file->getDescription( File::RAW ), $file->getTitle() );
513                }
514                if ( $comment ) {
515                    $vals['comment'] = $file->getDescription( File::RAW );
516                }
517            }
518        }
519
520        $canonicaltitle = isset( $prop['canonicaltitle'] );
521        $url = isset( $prop['url'] );
522        $sha1 = isset( $prop['sha1'] );
523        $meta = isset( $prop['metadata'] );
524        $extmetadata = isset( $prop['extmetadata'] );
525        $commonmeta = isset( $prop['commonmetadata'] );
526        $mime = isset( $prop['mime'] );
527        $mediatype = isset( $prop['mediatype'] );
528        $archive = isset( $prop['archivename'] );
529        $bitdepth = isset( $prop['bitdepth'] );
530        $uploadwarning = isset( $prop['uploadwarning'] );
531
532        if ( $uploadwarning ) {
533            $vals['html'] = SpecialUpload::getExistsWarning( UploadBase::getExistsWarning( $file ) );
534        }
535
536        if ( $file->isDeleted( File::DELETED_FILE ) ) {
537            $vals['filehidden'] = true;
538            $anyHidden = true;
539        }
540
541        if ( $anyHidden && $file->isDeleted( File::DELETED_RESTRICTED ) ) {
542            $vals['suppressed'] = true;
543        }
544
545        // Early return, tidier than indenting all following things one level
546        if ( isset( $opts['revdelUser'] ) && $opts['revdelUser']
547            && !$file->userCan( File::DELETED_FILE, $opts['revdelUser'] )
548        ) {
549            return $vals;
550        } elseif ( $file->isDeleted( File::DELETED_FILE ) ) {
551            return $vals;
552        }
553
554        if ( $canonicaltitle ) {
555            $vals['canonicaltitle'] = $file->getTitle()->getPrefixedText();
556        }
557
558        if ( $url ) {
559            $urlUtils = $services->getUrlUtils();
560
561            if ( $exists ) {
562                if ( $thumbParams !== null ) {
563                    $mto = $file->transform( $thumbParams );
564                    self::$transformCount++;
565                    if ( $mto && !$mto->isError() ) {
566                        $vals['thumburl'] = (string)$urlUtils->expand( $mto->getUrl(), PROTO_CURRENT );
567
568                        // T25834 - If the URLs are the same, we haven't resized it, so shouldn't give the wanted
569                        // thumbnail sizes for the thumbnail actual size
570                        if ( $mto->getUrl() !== $file->getUrl() ) {
571                            $vals['thumbwidth'] = (int)$mto->getWidth();
572                            $vals['thumbheight'] = (int)$mto->getHeight();
573                        } else {
574                            $vals['thumbwidth'] = (int)$file->getWidth();
575                            $vals['thumbheight'] = (int)$file->getHeight();
576                        }
577
578                        if ( isset( $prop['thumbmime'] ) && $file->getHandler() ) {
579                            [ , $mime ] = $file->getHandler()->getThumbType(
580                                $mto->getExtension(), $file->getMimeType(), $thumbParams );
581                            $vals['thumbmime'] = $mime;
582                        }
583                        // Report srcset parameters
584                        Linker::processResponsiveImages( $file, $mto, [
585                            'width' => $vals['thumbwidth'],
586                            'height' => $vals['thumbheight']
587                        ] + $thumbParams );
588                        foreach ( $mto->responsiveUrls as $density => $url ) {
589                            $vals['responsiveUrls'][$density] = (string)$urlUtils->expand( $url, PROTO_CURRENT );
590                        }
591                    } elseif ( $mto && $mto->isError() ) {
592                        /** @var MediaTransformError $mto */
593                        '@phan-var MediaTransformError $mto';
594                        $vals['thumberror'] = $mto->toText();
595                    }
596                }
597                $vals['url'] = (string)$urlUtils->expand( $file->getFullUrl(), PROTO_CURRENT );
598            }
599            $vals['descriptionurl'] = (string)$urlUtils->expand( $file->getDescriptionUrl(), PROTO_CURRENT );
600
601            $shortDescriptionUrl = $file->getDescriptionShortUrl();
602            if ( $shortDescriptionUrl !== null ) {
603                $vals['descriptionshorturl'] = (string)$urlUtils->expand( $shortDescriptionUrl, PROTO_CURRENT );
604            }
605        }
606
607        if ( !$exists ) {
608            $vals['filemissing'] = true;
609        }
610
611        if ( $sha1 && $exists ) {
612            $vals['sha1'] = \Wikimedia\base_convert( $file->getSha1(), 36, 16, 40 );
613        }
614
615        if ( $meta && $exists ) {
616            $metadata = $file->getMetadataArray();
617            if ( $metadata && $version !== 'latest' ) {
618                $metadata = $file->convertMetadataVersion( $metadata, $version );
619            }
620            $vals['metadata'] = $metadata ? static::processMetaData( $metadata, $result ) : null;
621        }
622        if ( $commonmeta && $exists ) {
623            $metaArray = $file->getCommonMetaArray();
624            $vals['commonmetadata'] = $metaArray ? static::processMetaData( $metaArray, $result ) : [];
625        }
626
627        if ( $extmetadata && $exists ) {
628            // Note, this should return an array where all the keys
629            // start with a letter, and all the values are strings.
630            // Thus there should be no issue with format=xml.
631            $format = new FormatMetadata;
632            $format->setSingleLanguage( !$opts['multilang'] );
633            // @phan-suppress-next-line PhanUndeclaredMethod
634            $format->getContext()->setLanguage( $opts['language'] );
635            $extmetaArray = $format->fetchExtendedMetadata( $file );
636            if ( $opts['extmetadatafilter'] ) {
637                $extmetaArray = array_intersect_key(
638                    $extmetaArray, array_fill_keys( $opts['extmetadatafilter'], true )
639                );
640            }
641            $vals['extmetadata'] = $extmetaArray;
642        }
643
644        if ( $mime && $exists ) {
645            $vals['mime'] = $file->getMimeType();
646        }
647
648        if ( $mediatype && $exists ) {
649            $vals['mediatype'] = $file->getMediaType();
650        }
651
652        if ( $archive && $file->isOld() ) {
653            /** @var OldLocalFile $file */
654            '@phan-var OldLocalFile $file';
655            $vals['archivename'] = $file->getArchiveName();
656        }
657
658        if ( $bitdepth && $exists ) {
659            $vals['bitdepth'] = $file->getBitDepth();
660        }
661
662        return $vals;
663    }
664
665    /**
666     * Get the count of image transformations performed
667     *
668     * If this is >= TRANSFORM_LIMIT, you should probably stop processing images.
669     *
670     * @return int Count
671     */
672    protected static function getTransformCount() {
673        return self::$transformCount;
674    }
675
676    /**
677     * @param array $metadata
678     * @param ApiResult $result
679     * @return array[]
680     */
681    public static function processMetaData( $metadata, $result ) {
682        $retval = [];
683        if ( is_array( $metadata ) ) {
684            foreach ( $metadata as $key => $value ) {
685                $r = [
686                    'name' => $key,
687                    ApiResult::META_BC_BOOLS => [ 'value' ],
688                ];
689                if ( is_array( $value ) ) {
690                    $r['value'] = static::processMetaData( $value, $result );
691                } else {
692                    $r['value'] = $value;
693                }
694                $retval[] = $r;
695            }
696        }
697        ApiResult::setIndexedTagName( $retval, 'metadata' );
698
699        return $retval;
700    }
701
702    /** @inheritDoc */
703    public function getCacheMode( $params ) {
704        if ( $this->userCanSeeRevDel() ) {
705            return 'private';
706        }
707
708        return 'public';
709    }
710
711    /**
712     * @param File $img
713     * @param string|null $start
714     * @return string
715     */
716    protected function getContinueStr( $img, $start = null ) {
717        return $img->getOriginalTitle()->getDBkey() . '|' . ( $start ?? $img->getTimestamp() );
718    }
719
720    /** @inheritDoc */
721    public function getAllowedParams() {
722        return [
723            'prop' => [
724                ParamValidator::PARAM_ISMULTI => true,
725                ParamValidator::PARAM_DEFAULT => 'timestamp|user',
726                ParamValidator::PARAM_TYPE => static::getPropertyNames(),
727                ApiBase::PARAM_HELP_MSG_PER_VALUE => static::getPropertyMessages(),
728            ],
729            'limit' => [
730                ParamValidator::PARAM_TYPE => 'limit',
731                ParamValidator::PARAM_DEFAULT => 1,
732                IntegerDef::PARAM_MIN => 1,
733                IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1,
734                IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2
735            ],
736            'start' => [
737                ParamValidator::PARAM_TYPE => 'timestamp'
738            ],
739            'end' => [
740                ParamValidator::PARAM_TYPE => 'timestamp'
741            ],
742            'urlwidth' => [
743                ParamValidator::PARAM_TYPE => 'integer',
744                ParamValidator::PARAM_DEFAULT => -1,
745                ApiBase::PARAM_HELP_MSG => [
746                    'apihelp-query+imageinfo-param-urlwidth',
747                    self::TRANSFORM_LIMIT,
748                ],
749            ],
750            'urlheight' => [
751                ParamValidator::PARAM_TYPE => 'integer',
752                ParamValidator::PARAM_DEFAULT => -1
753            ],
754            'metadataversion' => [
755                ParamValidator::PARAM_TYPE => 'string',
756                ParamValidator::PARAM_DEFAULT => '1',
757            ],
758            'extmetadatalanguage' => [
759                ParamValidator::PARAM_TYPE => 'string',
760                ParamValidator::PARAM_DEFAULT =>
761                    $this->contentLanguage->getCode(),
762            ],
763            'extmetadatamultilang' => [
764                ParamValidator::PARAM_TYPE => 'boolean',
765                ParamValidator::PARAM_DEFAULT => false,
766            ],
767            'extmetadatafilter' => [
768                ParamValidator::PARAM_TYPE => 'string',
769                ParamValidator::PARAM_ISMULTI => true,
770            ],
771            'urlparam' => [
772                ParamValidator::PARAM_DEFAULT => '',
773                ParamValidator::PARAM_TYPE => 'string',
774            ],
775            'badfilecontexttitle' => [
776                ParamValidator::PARAM_TYPE => 'string',
777            ],
778            'continue' => [
779                ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
780            ],
781            'localonly' => [
782                ParamValidator::PARAM_TYPE => 'boolean',
783                ParamValidator::PARAM_DEFAULT => false,
784            ],
785        ];
786    }
787
788    /**
789     * Returns all possible parameters to iiprop
790     *
791     * @param string[] $filter List of properties to filter out
792     * @return string[]
793     */
794    public static function getPropertyNames( $filter = [] ) {
795        return array_keys( static::getPropertyMessages( $filter ) );
796    }
797
798    /**
799     * Returns messages for all possible parameters to iiprop
800     *
801     * @param string[] $filter List of properties to filter out
802     * @return array<string,string>
803     */
804    public static function getPropertyMessages( $filter = [] ) {
805        return array_diff_key(
806            [
807                'timestamp' => 'apihelp-query+imageinfo-paramvalue-prop-timestamp',
808                'user' => 'apihelp-query+imageinfo-paramvalue-prop-user',
809                'userid' => 'apihelp-query+imageinfo-paramvalue-prop-userid',
810                'comment' => 'apihelp-query+imageinfo-paramvalue-prop-comment',
811                'parsedcomment' => 'apihelp-query+imageinfo-paramvalue-prop-parsedcomment',
812                'canonicaltitle' => 'apihelp-query+imageinfo-paramvalue-prop-canonicaltitle',
813                'url' => 'apihelp-query+imageinfo-paramvalue-prop-url',
814                'size' => 'apihelp-query+imageinfo-paramvalue-prop-size',
815                'dimensions' => 'apihelp-query+imageinfo-paramvalue-prop-dimensions',
816                'sha1' => 'apihelp-query+imageinfo-paramvalue-prop-sha1',
817                'mime' => 'apihelp-query+imageinfo-paramvalue-prop-mime',
818                'thumbmime' => 'apihelp-query+imageinfo-paramvalue-prop-thumbmime',
819                'mediatype' => 'apihelp-query+imageinfo-paramvalue-prop-mediatype',
820                'metadata' => 'apihelp-query+imageinfo-paramvalue-prop-metadata',
821                'commonmetadata' => 'apihelp-query+imageinfo-paramvalue-prop-commonmetadata',
822                'extmetadata' => 'apihelp-query+imageinfo-paramvalue-prop-extmetadata',
823                'archivename' => 'apihelp-query+imageinfo-paramvalue-prop-archivename',
824                'bitdepth' => 'apihelp-query+imageinfo-paramvalue-prop-bitdepth',
825                'uploadwarning' => 'apihelp-query+imageinfo-paramvalue-prop-uploadwarning',
826                'badfile' => 'apihelp-query+imageinfo-paramvalue-prop-badfile',
827            ],
828            array_fill_keys( $filter, true )
829        );
830    }
831
832    /** @inheritDoc */
833    protected function getExamplesMessages() {
834        return [
835            'action=query&titles=File:Albert%20Einstein%20Head.jpg&prop=imageinfo'
836                => 'apihelp-query+imageinfo-example-simple',
837            'action=query&titles=File:Test.jpg&prop=imageinfo&iilimit=50&' .
838                'iiend=2007-12-31T23:59:59Z&iiprop=timestamp|user|url'
839                => 'apihelp-query+imageinfo-example-dated',
840        ];
841    }
842
843    /** @inheritDoc */
844    public function getHelpUrls() {
845        return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Imageinfo';
846    }
847}
848
849/** @deprecated class alias since 1.43 */
850class_alias( ApiQueryImageInfo::class, 'ApiQueryImageInfo' );