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includes/api/ApiQueryAllImages.php (1 issue)

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1
<?php
2
3
/**
4
 * API for MediaWiki 1.12+
5
 *
6
 * Created on Mar 16, 2008
7
 *
8
 * Copyright © 2008 Vasiliev Victor [email protected],
9
 * based on ApiQueryAllPages.php
10
 *
11
 * This program is free software; you can redistribute it and/or modify
12
 * it under the terms of the GNU General Public License as published by
13
 * the Free Software Foundation; either version 2 of the License, or
14
 * (at your option) any later version.
15
 *
16
 * This program is distributed in the hope that it will be useful,
17
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19
 * GNU General Public License for more details.
20
 *
21
 * You should have received a copy of the GNU General Public License along
22
 * with this program; if not, write to the Free Software Foundation, Inc.,
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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24
 * http://www.gnu.org/copyleft/gpl.html
25
 *
26
 * @file
27
 */
28
29
/**
30
 * Query module to enumerate all available pages.
31
 *
32
 * @ingroup API
33
 */
34
class ApiQueryAllImages extends ApiQueryGeneratorBase {
35
	protected $mRepo;
36
37
	public function __construct( ApiQuery $query, $moduleName ) {
38
		parent::__construct( $query, $moduleName, 'ai' );
39
		$this->mRepo = RepoGroup::singleton()->getLocalRepo();
40
	}
41
42
	/**
43
	 * Override parent method to make sure the repo's DB is used
44
	 * which may not necessarily be the same as the local DB.
45
	 *
46
	 * TODO: allow querying non-local repos.
47
	 * @return Database
48
	 */
49
	protected function getDB() {
50
		return $this->mRepo->getSlaveDB();
51
	}
52
53
	public function execute() {
54
		$this->run();
55
	}
56
57
	public function getCacheMode( $params ) {
58
		return 'public';
59
	}
60
61
	/**
62
	 * @param ApiPageSet $resultPageSet
63
	 * @return void
64
	 */
65
	public function executeGenerator( $resultPageSet ) {
66
		if ( $resultPageSet->isResolvingRedirects() ) {
67
			$this->dieUsage(
68
				'Use "gaifilterredir=nonredirects" option instead of "redirects" ' .
69
					'when using allimages as a generator',
70
				'params'
71
			);
72
		}
73
74
		$this->run( $resultPageSet );
75
	}
76
77
	/**
78
	 * @param ApiPageSet $resultPageSet
79
	 * @return void
80
	 */
81
	private function run( $resultPageSet = null ) {
82
		$repo = $this->mRepo;
83
		if ( !$repo instanceof LocalRepo ) {
84
			$this->dieUsage(
85
				'Local file repository does not support querying all images',
86
				'unsupportedrepo'
87
			);
88
		}
89
90
		$prefix = $this->getModulePrefix();
91
92
		$db = $this->getDB();
93
94
		$params = $this->extractRequestParams();
95
96
		// Table and return fields
97
		$this->addTables( 'image' );
98
99
		$prop = array_flip( $params['prop'] );
100
		$this->addFields( LocalFile::selectFields() );
101
102
		$ascendingOrder = true;
103
		if ( $params['dir'] == 'descending' || $params['dir'] == 'older' ) {
104
			$ascendingOrder = false;
105
		}
106
107
		if ( $params['sort'] == 'name' ) {
108
			// Check mutually exclusive params
109
			$disallowed = [ 'start', 'end', 'user' ];
110
			foreach ( $disallowed as $pname ) {
111
				if ( isset( $params[$pname] ) ) {
112
					$this->dieUsage(
113
						"Parameter '{$prefix}{$pname}' can only be used with {$prefix}sort=timestamp",
114
						'badparams'
115
					);
116
				}
117
			}
118
			if ( $params['filterbots'] != 'all' ) {
119
				$this->dieUsage(
120
					"Parameter '{$prefix}filterbots' can only be used with {$prefix}sort=timestamp",
121
					'badparams'
122
				);
123
			}
124
125
			// Pagination
126 View Code Duplication
			if ( !is_null( $params['continue'] ) ) {
127
				$cont = explode( '|', $params['continue'] );
128
				$this->dieContinueUsageIf( count( $cont ) != 1 );
129
				$op = ( $ascendingOrder ? '>' : '<' );
130
				$continueFrom = $db->addQuotes( $cont[0] );
131
				$this->addWhere( "img_name $op= $continueFrom" );
132
			}
133
134
			// Image filters
135
			$from = ( $params['from'] === null ? null : $this->titlePartToKey( $params['from'], NS_FILE ) );
136
			$to = ( $params['to'] === null ? null : $this->titlePartToKey( $params['to'], NS_FILE ) );
137
			$this->addWhereRange( 'img_name', ( $ascendingOrder ? 'newer' : 'older' ), $from, $to );
138
139 View Code Duplication
			if ( isset( $params['prefix'] ) ) {
140
				$this->addWhere( 'img_name' . $db->buildLike(
141
					$this->titlePartToKey( $params['prefix'], NS_FILE ),
142
					$db->anyString() ) );
143
			}
144
		} else {
145
			// Check mutually exclusive params
146
			$disallowed = [ 'from', 'to', 'prefix' ];
147
			foreach ( $disallowed as $pname ) {
148
				if ( isset( $params[$pname] ) ) {
149
					$this->dieUsage(
150
						"Parameter '{$prefix}{$pname}' can only be used with {$prefix}sort=name",
151
						'badparams'
152
					);
153
				}
154
			}
155
			if ( !is_null( $params['user'] ) && $params['filterbots'] != 'all' ) {
156
				// Since filterbots checks if each user has the bot right, it
157
				// doesn't make sense to use it with user
158
				$this->dieUsage(
159
					"Parameters '{$prefix}user' and '{$prefix}filterbots' cannot be used together",
160
					'badparams'
161
				);
162
			}
163
164
			// Pagination
165
			$this->addTimestampWhereRange(
166
				'img_timestamp',
167
				$ascendingOrder ? 'newer' : 'older',
168
				$params['start'],
169
				$params['end']
170
			);
171
			// Include in ORDER BY for uniqueness
172
			$this->addWhereRange( 'img_name', $ascendingOrder ? 'newer' : 'older', null, null );
173
174
			if ( !is_null( $params['continue'] ) ) {
175
				$cont = explode( '|', $params['continue'] );
176
				$this->dieContinueUsageIf( count( $cont ) != 2 );
177
				$op = ( $ascendingOrder ? '>' : '<' );
178
				$continueTimestamp = $db->addQuotes( $db->timestamp( $cont[0] ) );
179
				$continueName = $db->addQuotes( $cont[1] );
180
				$this->addWhere( "img_timestamp $op $continueTimestamp OR " .
181
					"(img_timestamp = $continueTimestamp AND " .
182
					"img_name $op= $continueName)"
183
				);
184
			}
185
186
			// Image filters
187
			if ( !is_null( $params['user'] ) ) {
188
				$this->addWhereFld( 'img_user_text', $params['user'] );
189
			}
190
			if ( $params['filterbots'] != 'all' ) {
191
				$this->addTables( 'user_groups' );
192
				$this->addJoinConds( [ 'user_groups' => [
193
					'LEFT JOIN',
194
					[
195
						'ug_group' => User::getGroupsWithPermission( 'bot' ),
196
						'ug_user = img_user'
197
					]
198
				] ] );
199
				$groupCond = ( $params['filterbots'] == 'nobots' ? 'NULL' : 'NOT NULL' );
200
				$this->addWhere( "ug_group IS $groupCond" );
201
			}
202
		}
203
204
		// Filters not depending on sort
205
		if ( isset( $params['minsize'] ) ) {
206
			$this->addWhere( 'img_size>=' . intval( $params['minsize'] ) );
207
		}
208
209
		if ( isset( $params['maxsize'] ) ) {
210
			$this->addWhere( 'img_size<=' . intval( $params['maxsize'] ) );
211
		}
212
213
		$sha1 = false;
214
		if ( isset( $params['sha1'] ) ) {
215
			$sha1 = strtolower( $params['sha1'] );
216
			if ( !$this->validateSha1Hash( $sha1 ) ) {
217
				$this->dieUsage( 'The SHA1 hash provided is not valid', 'invalidsha1hash' );
218
			}
219
			$sha1 = Wikimedia\base_convert( $sha1, 16, 36, 31 );
220 View Code Duplication
		} elseif ( isset( $params['sha1base36'] ) ) {
221
			$sha1 = strtolower( $params['sha1base36'] );
222
			if ( !$this->validateSha1Base36Hash( $sha1 ) ) {
223
				$this->dieUsage( 'The SHA1Base36 hash provided is not valid', 'invalidsha1base36hash' );
224
			}
225
		}
226
		if ( $sha1 ) {
227
			$this->addWhereFld( 'img_sha1', $sha1 );
228
		}
229
230
		if ( !is_null( $params['mime'] ) ) {
231
			if ( $this->getConfig()->get( 'MiserMode' ) ) {
232
				$this->dieUsage( 'MIME search disabled in Miser Mode', 'mimesearchdisabled' );
233
			}
234
235
			$mimeConds = [];
236
			foreach ( $params['mime'] as $mime ) {
237
				list( $major, $minor ) = File::splitMime( $mime );
238
				$mimeConds[] = $db->makeList(
239
					[
240
						'img_major_mime' => $major,
241
						'img_minor_mime' => $minor,
242
					],
243
					LIST_AND
244
				);
245
			}
246
			// safeguard against internal_api_error_DBQueryError
247
			if ( count( $mimeConds ) > 0 ) {
248
				$this->addWhere( $db->makeList( $mimeConds, LIST_OR ) );
249
			} else {
250
				// no MIME types, no files
251
				$this->getResult()->addValue( 'query', $this->getModuleName(), [] );
252
				return;
253
			}
254
		}
255
256
		$limit = $params['limit'];
257
		$this->addOption( 'LIMIT', $limit + 1 );
258
		$sortFlag = '';
259
		if ( !$ascendingOrder ) {
260
			$sortFlag = ' DESC';
261
		}
262
		if ( $params['sort'] == 'timestamp' ) {
263
			$this->addOption( 'ORDER BY', 'img_timestamp' . $sortFlag );
264
			if ( !is_null( $params['user'] ) ) {
265
				$this->addOption( 'USE INDEX', [ 'image' => 'img_usertext_timestamp' ] );
266
			} else {
267
				$this->addOption( 'USE INDEX', [ 'image' => 'img_timestamp' ] );
268
			}
269
		} else {
270
			$this->addOption( 'ORDER BY', 'img_name' . $sortFlag );
271
		}
272
273
		$res = $this->select( __METHOD__ );
274
275
		$titles = [];
276
		$count = 0;
277
		$result = $this->getResult();
278
		foreach ( $res as $row ) {
279 View Code Duplication
			if ( ++$count > $limit ) {
280
				// We've reached the one extra which shows that there are
281
				// additional pages to be had. Stop here...
282
				if ( $params['sort'] == 'name' ) {
283
					$this->setContinueEnumParameter( 'continue', $row->img_name );
284
				} else {
285
					$this->setContinueEnumParameter( 'continue', "$row->img_timestamp|$row->img_name" );
286
				}
287
				break;
288
			}
289
290
			if ( is_null( $resultPageSet ) ) {
291
				$file = $repo->newFileFromRow( $row );
0 ignored issues
show
It seems like $row defined by $row on line 278 can be null; however, LocalRepo::newFileFromRow() does not accept null, maybe add an additional type check?

Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code:

/** @return stdClass|null */
function mayReturnNull() { }

function doesNotAcceptNull(stdClass $x) { }

// With potential error.
function withoutCheck() {
    $x = mayReturnNull();
    doesNotAcceptNull($x); // Potential error here.
}

// Safe - Alternative 1
function withCheck1() {
    $x = mayReturnNull();
    if ( ! $x instanceof stdClass) {
        throw new \LogicException('$x must be defined.');
    }
    doesNotAcceptNull($x);
}

// Safe - Alternative 2
function withCheck2() {
    $x = mayReturnNull();
    if ($x instanceof stdClass) {
        doesNotAcceptNull($x);
    }
}
Loading history...
292
				$info = array_merge( [ 'name' => $row->img_name ],
293
					ApiQueryImageInfo::getInfo( $file, $prop, $result ) );
294
				self::addTitleInfo( $info, $file->getTitle() );
295
296
				$fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $info );
297 View Code Duplication
				if ( !$fit ) {
298
					if ( $params['sort'] == 'name' ) {
299
						$this->setContinueEnumParameter( 'continue', $row->img_name );
300
					} else {
301
						$this->setContinueEnumParameter( 'continue', "$row->img_timestamp|$row->img_name" );
302
					}
303
					break;
304
				}
305
			} else {
306
				$titles[] = Title::makeTitle( NS_FILE, $row->img_name );
307
			}
308
		}
309
310 View Code Duplication
		if ( is_null( $resultPageSet ) ) {
311
			$result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'img' );
312
		} else {
313
			$resultPageSet->populateFromTitles( $titles );
314
		}
315
	}
316
317
	public function getAllowedParams() {
318
		$ret = [
319
			'sort' => [
320
				ApiBase::PARAM_DFLT => 'name',
321
				ApiBase::PARAM_TYPE => [
322
					'name',
323
					'timestamp'
324
				]
325
			],
326
			'dir' => [
327
				ApiBase::PARAM_DFLT => 'ascending',
328
				ApiBase::PARAM_TYPE => [
329
					// sort=name
330
					'ascending',
331
					'descending',
332
					// sort=timestamp
333
					'newer',
334
					'older'
335
				]
336
			],
337
			'from' => null,
338
			'to' => null,
339
			'continue' => [
340
				ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
341
			],
342
			'start' => [
343
				ApiBase::PARAM_TYPE => 'timestamp'
344
			],
345
			'end' => [
346
				ApiBase::PARAM_TYPE => 'timestamp'
347
			],
348
			'prop' => [
349
				ApiBase::PARAM_TYPE => ApiQueryImageInfo::getPropertyNames( $this->propertyFilter ),
350
				ApiBase::PARAM_DFLT => 'timestamp|url',
351
				ApiBase::PARAM_ISMULTI => true,
352
				ApiBase::PARAM_HELP_MSG => 'apihelp-query+imageinfo-param-prop',
353
				ApiBase::PARAM_HELP_MSG_PER_VALUE =>
354
					ApiQueryImageInfo::getPropertyMessages( $this->propertyFilter ),
355
			],
356
			'prefix' => null,
357
			'minsize' => [
358
				ApiBase::PARAM_TYPE => 'integer',
359
			],
360
			'maxsize' => [
361
				ApiBase::PARAM_TYPE => 'integer',
362
			],
363
			'sha1' => null,
364
			'sha1base36' => null,
365
			'user' => [
366
				ApiBase::PARAM_TYPE => 'user'
367
			],
368
			'filterbots' => [
369
				ApiBase::PARAM_DFLT => 'all',
370
				ApiBase::PARAM_TYPE => [
371
					'all',
372
					'bots',
373
					'nobots'
374
				]
375
			],
376
			'mime' => [
377
				ApiBase::PARAM_ISMULTI => true,
378
			],
379
			'limit' => [
380
				ApiBase::PARAM_DFLT => 10,
381
				ApiBase::PARAM_TYPE => 'limit',
382
				ApiBase::PARAM_MIN => 1,
383
				ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
384
				ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
385
			],
386
		];
387
388
		if ( $this->getConfig()->get( 'MiserMode' ) ) {
389
			$ret['mime'][ApiBase::PARAM_HELP_MSG] = 'api-help-param-disabled-in-miser-mode';
390
		}
391
392
		return $ret;
393
	}
394
395
	private $propertyFilter = [ 'archivename', 'thumbmime', 'uploadwarning' ];
396
397 View Code Duplication
	protected function getExamplesMessages() {
398
		return [
399
			'action=query&list=allimages&aifrom=B'
400
				=> 'apihelp-query+allimages-example-B',
401
			'action=query&list=allimages&aiprop=user|timestamp|url&' .
402
				'aisort=timestamp&aidir=older'
403
				=> 'apihelp-query+allimages-example-recent',
404
			'action=query&list=allimages&aimime=image/png|image/gif'
405
				=> 'apihelp-query+allimages-example-mimetypes',
406
			'action=query&generator=allimages&gailimit=4&' .
407
				'gaifrom=T&prop=imageinfo'
408
				=> 'apihelp-query+allimages-example-generator',
409
		];
410
	}
411
412
	public function getHelpUrls() {
413
		return 'https://www.mediawiki.org/wiki/API:Allimages';
414
	}
415
}
416