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| 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 | use MediaWiki\Title\MalformedTitleException; |
| 25 | use MediaWiki\Title\Title; |
| 26 | use MediaWiki\Title\TitleValue; |
| 27 | use Wikimedia\Rdbms\IDatabase; |
| 28 | use Wikimedia\Rdbms\IExpression; |
| 29 | use Wikimedia\Rdbms\IReadableDatabase; |
| 30 | use Wikimedia\Rdbms\IResultWrapper; |
| 31 | use Wikimedia\Rdbms\SelectQueryBuilder; |
| 32 | |
| 33 | /** |
| 34 | * This is a base class for all Query modules. |
| 35 | * It provides some common functionality such as constructing various SQL |
| 36 | * queries. |
| 37 | * |
| 38 | * @stable to extend |
| 39 | * |
| 40 | * @ingroup API |
| 41 | */ |
| 42 | abstract class ApiQueryBase extends ApiBase { |
| 43 | use ApiQueryBlockInfoTrait; |
| 44 | |
| 45 | private ApiQuery $mQueryModule; |
| 46 | private ?IReadableDatabase $mDb; |
| 47 | |
| 48 | /** |
| 49 | * @var SelectQueryBuilder|null |
| 50 | */ |
| 51 | private $queryBuilder; |
| 52 | |
| 53 | /** |
| 54 | * @stable to call |
| 55 | * @param ApiQuery $queryModule |
| 56 | * @param string $moduleName |
| 57 | * @param string $paramPrefix |
| 58 | */ |
| 59 | public function __construct( ApiQuery $queryModule, $moduleName, $paramPrefix = '' ) { |
| 60 | parent::__construct( $queryModule->getMain(), $moduleName, $paramPrefix ); |
| 61 | $this->mQueryModule = $queryModule; |
| 62 | $this->mDb = null; |
| 63 | $this->resetQueryParams(); |
| 64 | } |
| 65 | |
| 66 | /***************************************************************************/ |
| 67 | // region Methods to implement |
| 68 | /** @name Methods to implement */ |
| 69 | |
| 70 | /** |
| 71 | * Get the cache mode for the data generated by this module. Override |
| 72 | * this in the module subclass. For possible return values and other |
| 73 | * details about cache modes, see ApiMain::setCacheMode() |
| 74 | * |
| 75 | * Public caching will only be allowed if *all* the modules that supply |
| 76 | * data for a given request return a cache mode of public. |
| 77 | * |
| 78 | * @stable to override |
| 79 | * @param array $params |
| 80 | * @return string |
| 81 | */ |
| 82 | public function getCacheMode( $params ) { |
| 83 | return 'private'; |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Override this method to request extra fields from the pageSet |
| 88 | * using $pageSet->requestField('fieldName') |
| 89 | * |
| 90 | * Note this only makes sense for 'prop' modules, as 'list' and 'meta' |
| 91 | * modules should not be using the pageset. |
| 92 | * |
| 93 | * @stable to override |
| 94 | * @param ApiPageSet $pageSet |
| 95 | */ |
| 96 | public function requestExtraData( $pageSet ) { |
| 97 | } |
| 98 | |
| 99 | // endregion -- end of methods to implement |
| 100 | |
| 101 | /***************************************************************************/ |
| 102 | // region Data access |
| 103 | /** @name Data access */ |
| 104 | |
| 105 | /** |
| 106 | * Get the main Query module |
| 107 | * @return ApiQuery |
| 108 | */ |
| 109 | public function getQuery() { |
| 110 | return $this->mQueryModule; |
| 111 | } |
| 112 | |
| 113 | /** @inheritDoc */ |
| 114 | public function getParent() { |
| 115 | return $this->getQuery(); |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Get the Query database connection (read-only) |
| 120 | * @stable to override |
| 121 | * @return IReadableDatabase |
| 122 | */ |
| 123 | protected function getDB() { |
| 124 | $this->mDb ??= $this->getQuery()->getDB(); |
| 125 | |
| 126 | return $this->mDb; |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * Get the PageSet object to work on |
| 131 | * @stable to override |
| 132 | * @return ApiPageSet |
| 133 | */ |
| 134 | protected function getPageSet() { |
| 135 | return $this->getQuery()->getPageSet(); |
| 136 | } |
| 137 | |
| 138 | // endregion -- end of data access |
| 139 | |
| 140 | /***************************************************************************/ |
| 141 | // region Querying |
| 142 | /** @name Querying */ |
| 143 | |
| 144 | /** |
| 145 | * Blank the internal arrays with query parameters |
| 146 | */ |
| 147 | protected function resetQueryParams() { |
| 148 | $this->queryBuilder = null; |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * Get the SelectQueryBuilder. |
| 153 | * |
| 154 | * This is lazy initialised since getDB() fails in ApiQueryAllImages if it |
| 155 | * is called before the constructor completes. |
| 156 | * |
| 157 | * @return SelectQueryBuilder |
| 158 | */ |
| 159 | protected function getQueryBuilder() { |
| 160 | $this->queryBuilder ??= $this->getDB()->newSelectQueryBuilder(); |
| 161 | return $this->queryBuilder; |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Add a set of tables to the internal array |
| 166 | * @param string|array $tables Table name or array of table names |
| 167 | * or nested arrays for joins using parentheses for grouping |
| 168 | * @param string|null $alias Table alias, or null for no alias. Cannot be |
| 169 | * used with multiple tables |
| 170 | */ |
| 171 | protected function addTables( $tables, $alias = null ) { |
| 172 | if ( is_array( $tables ) ) { |
| 173 | if ( $alias !== null ) { |
| 174 | ApiBase::dieDebug( __METHOD__, 'Multiple table aliases not supported' ); |
| 175 | } |
| 176 | $this->getQueryBuilder()->rawTables( $tables ); |
| 177 | } else { |
| 178 | $this->getQueryBuilder()->table( $tables, $alias ); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * Add a set of JOIN conditions to the internal array |
| 184 | * |
| 185 | * JOIN conditions are formatted as [ tablename => [ jointype, conditions ] ] |
| 186 | * e.g. [ 'page' => [ 'LEFT JOIN', 'page_id=rev_page' ] ]. |
| 187 | * Conditions may be a string or an addWhere()-style array. |
| 188 | * @param array $join_conds JOIN conditions |
| 189 | */ |
| 190 | protected function addJoinConds( $join_conds ) { |
| 191 | if ( !is_array( $join_conds ) ) { |
| 192 | ApiBase::dieDebug( __METHOD__, 'Join conditions have to be arrays' ); |
| 193 | } |
| 194 | $this->getQueryBuilder()->joinConds( $join_conds ); |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Add a set of fields to select to the internal array |
| 199 | * @param array|string $value Field name or array of field names |
| 200 | */ |
| 201 | protected function addFields( $value ) { |
| 202 | $this->getQueryBuilder()->fields( $value ); |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * Same as addFields(), but add the fields only if a condition is met |
| 207 | * @param array|string $value See addFields() |
| 208 | * @param bool $condition If false, do nothing |
| 209 | * @return bool |
| 210 | */ |
| 211 | protected function addFieldsIf( $value, $condition ) { |
| 212 | if ( $condition ) { |
| 213 | $this->addFields( $value ); |
| 214 | |
| 215 | return true; |
| 216 | } |
| 217 | |
| 218 | return false; |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * Add a set of WHERE clauses to the internal array. |
| 223 | * |
| 224 | * The array should be appropriate for passing as $conds to |
| 225 | * IDatabase::select(). Arrays from multiple calls are merged with |
| 226 | * array_merge(). A string is treated as a single-element array. |
| 227 | * |
| 228 | * When passing `'field' => $arrayOfIDs` where the IDs are taken from user |
| 229 | * input, consider using addWhereIDsFld() instead. |
| 230 | * |
| 231 | * @see IDatabase::select() |
| 232 | * @param string|array|IExpression $value |
| 233 | */ |
| 234 | protected function addWhere( $value ) { |
| 235 | if ( is_array( $value ) ) { |
| 236 | // Double check: don't insert empty arrays, |
| 237 | // Database::makeList() chokes on them |
| 238 | if ( count( $value ) ) { |
| 239 | $this->getQueryBuilder()->where( $value ); |
| 240 | } |
| 241 | } else { |
| 242 | $this->getQueryBuilder()->where( $value ); |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | /** |
| 247 | * Same as addWhere(), but add the WHERE clauses only if a condition is met |
| 248 | * @param string|array|IExpression $value |
| 249 | * @param bool $condition If false, do nothing |
| 250 | * @return bool |
| 251 | */ |
| 252 | protected function addWhereIf( $value, $condition ) { |
| 253 | if ( $condition ) { |
| 254 | $this->addWhere( $value ); |
| 255 | |
| 256 | return true; |
| 257 | } |
| 258 | |
| 259 | return false; |
| 260 | } |
| 261 | |
| 262 | /** |
| 263 | * Equivalent to addWhere( [ $field => $value ] ) |
| 264 | * |
| 265 | * When $value is an array of integer IDs taken from user input, |
| 266 | * consider using addWhereIDsFld() instead. |
| 267 | * |
| 268 | * @param string $field Field name |
| 269 | * @param int|string|(string|int|null)[] $value Value; ignored if null or empty array |
| 270 | */ |
| 271 | protected function addWhereFld( $field, $value ) { |
| 272 | if ( $value !== null && !( is_array( $value ) && !$value ) ) { |
| 273 | $this->getQueryBuilder()->where( [ $field => $value ] ); |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * Like addWhereFld for an integer list of IDs |
| 279 | * |
| 280 | * When passed wildly out-of-range values for integer comparison, |
| 281 | * the database may choose a poor query plan. This method validates the |
| 282 | * passed IDs against the range of values in the database to omit |
| 283 | * out-of-range values. |
| 284 | * |
| 285 | * This should be used when the IDs are derived from arbitrary user input; |
| 286 | * it is not necessary if the IDs are already known to be within a sensible |
| 287 | * range. |
| 288 | * |
| 289 | * This should not be used when there is not a suitable index on $field to |
| 290 | * quickly retrieve the minimum and maximum values. |
| 291 | * |
| 292 | * @since 1.33 |
| 293 | * @param string $table Table name |
| 294 | * @param string $field Field name |
| 295 | * @param int[] $ids |
| 296 | * @return int Count of IDs actually included |
| 297 | */ |
| 298 | protected function addWhereIDsFld( $table, $field, $ids ) { |
| 299 | // Use count() to its full documented capabilities to simultaneously |
| 300 | // test for null, empty array or empty countable object |
| 301 | if ( count( $ids ) ) { |
| 302 | $ids = $this->filterIDs( [ [ $table, $field ] ], $ids ); |
| 303 | |
| 304 | if ( $ids === [] ) { |
| 305 | // Return nothing, no IDs are valid |
| 306 | $this->getQueryBuilder()->where( '0 = 1' ); |
| 307 | } else { |
| 308 | $this->getQueryBuilder()->where( [ $field => $ids ] ); |
| 309 | } |
| 310 | } |
| 311 | return count( $ids ); |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Add a WHERE clause corresponding to a range, and an ORDER BY |
| 316 | * clause to sort in the right direction |
| 317 | * @param string $field Field name |
| 318 | * @param string $dir If 'newer', sort in ascending order, otherwise |
| 319 | * sort in descending order |
| 320 | * @param string|int|null $start Value to start the list at. If $dir == 'newer' |
| 321 | * this is the lower boundary, otherwise it's the upper boundary |
| 322 | * @param string|int|null $end Value to end the list at. If $dir == 'newer' this |
| 323 | * is the upper boundary, otherwise it's the lower boundary |
| 324 | * @param bool $sort If false, don't add an ORDER BY clause |
| 325 | */ |
| 326 | protected function addWhereRange( $field, $dir, $start, $end, $sort = true ) { |
| 327 | $isDirNewer = ( $dir === 'newer' ); |
| 328 | $after = ( $isDirNewer ? '>=' : '<=' ); |
| 329 | $before = ( $isDirNewer ? '<=' : '>=' ); |
| 330 | $db = $this->getDB(); |
| 331 | |
| 332 | if ( $start !== null ) { |
| 333 | $this->addWhere( $db->expr( $field, $after, $start ) ); |
| 334 | } |
| 335 | |
| 336 | if ( $end !== null ) { |
| 337 | $this->addWhere( $db->expr( $field, $before, $end ) ); |
| 338 | } |
| 339 | |
| 340 | if ( $sort ) { |
| 341 | $this->getQueryBuilder()->orderBy( $field, $isDirNewer ? null : 'DESC' ); |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * Add a WHERE clause corresponding to a range, similar to addWhereRange, |
| 347 | * but converts $start and $end to database timestamps. |
| 348 | * @see addWhereRange |
| 349 | * @param string $field |
| 350 | * @param string $dir |
| 351 | * @param string|int|null $start |
| 352 | * @param string|int|null $end |
| 353 | * @param bool $sort |
| 354 | */ |
| 355 | protected function addTimestampWhereRange( $field, $dir, $start, $end, $sort = true ) { |
| 356 | $db = $this->getDB(); |
| 357 | $this->addWhereRange( $field, $dir, |
| 358 | $db->timestampOrNull( $start ), $db->timestampOrNull( $end ), $sort ); |
| 359 | } |
| 360 | |
| 361 | /** |
| 362 | * Add an option such as LIMIT or USE INDEX. If an option was set |
| 363 | * before, the old value will be overwritten |
| 364 | * @param string $name Option name |
| 365 | * @param mixed $value The option value, or null for a boolean option |
| 366 | */ |
| 367 | protected function addOption( $name, $value = null ) { |
| 368 | $this->getQueryBuilder()->option( $name, $value ); |
| 369 | } |
| 370 | |
| 371 | /** |
| 372 | * Execute a SELECT query based on the values in the internal arrays |
| 373 | * @param string $method Function the query should be attributed to. |
| 374 | * You should usually use __METHOD__ here |
| 375 | * @param array $extraQuery Query data to add but not store in the object |
| 376 | * Format is [ |
| 377 | * 'tables' => ..., |
| 378 | * 'fields' => ..., |
| 379 | * 'where' => ..., |
| 380 | * 'options' => ..., |
| 381 | * 'join_conds' => ... |
| 382 | * ] |
| 383 | * @param array|null &$hookData If set, the ApiQueryBaseBeforeQuery and |
| 384 | * ApiQueryBaseAfterQuery hooks will be called, and the |
| 385 | * ApiQueryBaseProcessRow hook will be expected. |
| 386 | * @return IResultWrapper |
| 387 | */ |
| 388 | protected function select( $method, $extraQuery = [], array &$hookData = null ) { |
| 389 | $queryBuilder = clone $this->getQueryBuilder(); |
| 390 | if ( isset( $extraQuery['tables'] ) ) { |
| 391 | $queryBuilder->rawTables( (array)$extraQuery['tables'] ); |
| 392 | } |
| 393 | if ( isset( $extraQuery['fields'] ) ) { |
| 394 | $queryBuilder->fields( (array)$extraQuery['fields'] ); |
| 395 | } |
| 396 | if ( isset( $extraQuery['where'] ) ) { |
| 397 | $queryBuilder->where( (array)$extraQuery['where'] ); |
| 398 | } |
| 399 | if ( isset( $extraQuery['options'] ) ) { |
| 400 | $queryBuilder->options( (array)$extraQuery['options'] ); |
| 401 | } |
| 402 | if ( isset( $extraQuery['join_conds'] ) ) { |
| 403 | $queryBuilder->joinConds( (array)$extraQuery['join_conds'] ); |
| 404 | } |
| 405 | |
| 406 | if ( $hookData !== null && $this->getHookContainer()->isRegistered( 'ApiQueryBaseBeforeQuery' ) ) { |
| 407 | $info = $queryBuilder->getQueryInfo(); |
| 408 | $this->getHookRunner()->onApiQueryBaseBeforeQuery( |
| 409 | $this, $info['tables'], $info['fields'], $info['conds'], |
| 410 | $info['options'], $info['join_conds'], $hookData |
| 411 | ); |
| 412 | $queryBuilder = $this->getDB()->newSelectQueryBuilder()->queryInfo( $info ); |
| 413 | } |
| 414 | |
| 415 | $queryBuilder->caller( $method ); |
| 416 | $res = $queryBuilder->fetchResultSet(); |
| 417 | |
| 418 | if ( $hookData !== null ) { |
| 419 | $this->getHookRunner()->onApiQueryBaseAfterQuery( $this, $res, $hookData ); |
| 420 | } |
| 421 | |
| 422 | return $res; |
| 423 | } |
| 424 | |
| 425 | /** |
| 426 | * Call the ApiQueryBaseProcessRow hook |
| 427 | * |
| 428 | * Generally, a module that passed $hookData to self::select() will call |
| 429 | * this just before calling ApiResult::addValue(), and treat a false return |
| 430 | * here in the same way it treats a false return from addValue(). |
| 431 | * |
| 432 | * @since 1.28 |
| 433 | * @param stdClass $row Database row |
| 434 | * @param array &$data Data to be added to the result |
| 435 | * @param array &$hookData Hook data from ApiQueryBase::select() @phan-output-reference |
| 436 | * @return bool Return false if row processing should end with continuation |
| 437 | */ |
| 438 | protected function processRow( $row, array &$data, array &$hookData ) { |
| 439 | return $this->getHookRunner()->onApiQueryBaseProcessRow( $this, $row, $data, $hookData ); |
| 440 | } |
| 441 | |
| 442 | // endregion -- end of querying |
| 443 | |
| 444 | /***************************************************************************/ |
| 445 | // region Utility methods |
| 446 | /** @name Utility methods */ |
| 447 | |
| 448 | /** |
| 449 | * Add information (title and namespace) about a Title object to a |
| 450 | * result array |
| 451 | * @param array &$arr Result array à la ApiResult |
| 452 | * @param Title $title |
| 453 | * @param string $prefix Module prefix |
| 454 | */ |
| 455 | public static function addTitleInfo( &$arr, $title, $prefix = '' ) { |
| 456 | $arr[$prefix . 'ns'] = $title->getNamespace(); |
| 457 | $arr[$prefix . 'title'] = $title->getPrefixedText(); |
| 458 | } |
| 459 | |
| 460 | /** |
| 461 | * Add a sub-element under the page element with the given page ID |
| 462 | * @param int $pageId |
| 463 | * @param array $data Data array à la ApiResult |
| 464 | * @return bool Whether the element fit in the result |
| 465 | */ |
| 466 | protected function addPageSubItems( $pageId, $data ) { |
| 467 | $result = $this->getResult(); |
| 468 | ApiResult::setIndexedTagName( $data, $this->getModulePrefix() ); |
| 469 | |
| 470 | return $result->addValue( [ 'query', 'pages', (int)$pageId ], |
| 471 | $this->getModuleName(), |
| 472 | $data ); |
| 473 | } |
| 474 | |
| 475 | /** |
| 476 | * Same as addPageSubItems(), but one element of $data at a time |
| 477 | * @param int $pageId |
| 478 | * @param mixed $item Data à la ApiResult |
| 479 | * @param string|null $elemname XML element name. If null, getModuleName() |
| 480 | * is used |
| 481 | * @return bool Whether the element fit in the result |
| 482 | */ |
| 483 | protected function addPageSubItem( $pageId, $item, $elemname = null ) { |
| 484 | $result = $this->getResult(); |
| 485 | $fit = $result->addValue( [ 'query', 'pages', $pageId, |
| 486 | $this->getModuleName() ], null, $item ); |
| 487 | if ( !$fit ) { |
| 488 | return false; |
| 489 | } |
| 490 | $result->addIndexedTagName( |
| 491 | [ 'query', 'pages', $pageId, $this->getModuleName() ], |
| 492 | $elemname ?? $this->getModulePrefix() |
| 493 | ); |
| 494 | |
| 495 | return true; |
| 496 | } |
| 497 | |
| 498 | /** |
| 499 | * Set a query-continue value |
| 500 | * @param string $paramName Parameter name |
| 501 | * @param int|string|array $paramValue Parameter value |
| 502 | */ |
| 503 | protected function setContinueEnumParameter( $paramName, $paramValue ) { |
| 504 | $this->getContinuationManager()->addContinueParam( $this, $paramName, $paramValue ); |
| 505 | } |
| 506 | |
| 507 | /** |
| 508 | * Convert an input title or title prefix into a dbkey. |
| 509 | * |
| 510 | * $namespace should always be specified in order to handle per-namespace |
| 511 | * capitalization settings. |
| 512 | * |
| 513 | * @param string $titlePart |
| 514 | * @param int $namespace Namespace of the title |
| 515 | * @return string DBkey (no namespace prefix) |
| 516 | */ |
| 517 | public function titlePartToKey( $titlePart, $namespace = NS_MAIN ) { |
| 518 | $t = Title::makeTitleSafe( $namespace, $titlePart . 'x' ); |
| 519 | if ( !$t || $t->hasFragment() ) { |
| 520 | // Invalid title (e.g. bad chars) or contained a '#'. |
| 521 | $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $titlePart ) ] ); |
| 522 | } |
| 523 | if ( $namespace != $t->getNamespace() || $t->isExternal() ) { |
| 524 | // This can happen in two cases. First, if you call titlePartToKey with a title part |
| 525 | // that looks like a namespace, but with $defaultNamespace = NS_MAIN. It would be very |
| 526 | // difficult to handle such a case. Such cases cannot exist and are therefore treated |
| 527 | // as invalid user input. The second case is when somebody specifies a title interwiki |
| 528 | // prefix. |
| 529 | $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $titlePart ) ] ); |
| 530 | } |
| 531 | |
| 532 | return substr( $t->getDBkey(), 0, -1 ); |
| 533 | } |
| 534 | |
| 535 | /** |
| 536 | * Convert an input title or title prefix into a TitleValue. |
| 537 | * |
| 538 | * @since 1.35 |
| 539 | * @param string $titlePart |
| 540 | * @param int $defaultNamespace Default namespace if none is given |
| 541 | * @return TitleValue |
| 542 | */ |
| 543 | protected function parsePrefixedTitlePart( $titlePart, $defaultNamespace = NS_MAIN ) { |
| 544 | try { |
| 545 | $titleParser = MediaWikiServices::getInstance()->getTitleParser(); |
| 546 | $t = $titleParser->parseTitle( $titlePart . 'X', $defaultNamespace ); |
| 547 | } catch ( MalformedTitleException $e ) { |
| 548 | $t = null; |
| 549 | } |
| 550 | |
| 551 | if ( !$t || $t->hasFragment() || $t->isExternal() || $t->getDBkey() === 'X' ) { |
| 552 | // Invalid title (e.g. bad chars) or contained a '#'. |
| 553 | $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $titlePart ) ] ); |
| 554 | } |
| 555 | |
| 556 | return new TitleValue( $t->getNamespace(), substr( $t->getDBkey(), 0, -1 ) ); |
| 557 | } |
| 558 | |
| 559 | /** |
| 560 | * @param string $hash |
| 561 | * @return bool |
| 562 | */ |
| 563 | public function validateSha1Hash( $hash ) { |
| 564 | return (bool)preg_match( '/^[a-f0-9]{40}$/', $hash ); |
| 565 | } |
| 566 | |
| 567 | /** |
| 568 | * @param string $hash |
| 569 | * @return bool |
| 570 | */ |
| 571 | public function validateSha1Base36Hash( $hash ) { |
| 572 | return (bool)preg_match( '/^[a-z0-9]{31}$/', $hash ); |
| 573 | } |
| 574 | |
| 575 | /** |
| 576 | * Check whether the current user has permission to view revision-deleted |
| 577 | * fields. |
| 578 | * @return bool |
| 579 | */ |
| 580 | public function userCanSeeRevDel() { |
| 581 | return $this->getAuthority()->isAllowedAny( |
| 582 | 'deletedhistory', |
| 583 | 'deletedtext', |
| 584 | 'deleterevision', |
| 585 | 'suppressrevision', |
| 586 | 'viewsuppressed' |
| 587 | ); |
| 588 | } |
| 589 | |
| 590 | /** |
| 591 | * Preprocess the result set to fill the GenderCache with the necessary information |
| 592 | * before using self::addTitleInfo |
| 593 | * |
| 594 | * @param IResultWrapper $res Result set to work on. |
| 595 | * The result set must have _namespace and _title fields with the provided field prefix |
| 596 | * @param string $fname The caller function name, always use __METHOD__ |
| 597 | * @param string $fieldPrefix Prefix for fields to check gender for |
| 598 | */ |
| 599 | protected function executeGenderCacheFromResultWrapper( |
| 600 | IResultWrapper $res, $fname = __METHOD__, $fieldPrefix = 'page' |
| 601 | ) { |
| 602 | if ( !$res->numRows() ) { |
| 603 | return; |
| 604 | } |
| 605 | |
| 606 | $services = MediaWikiServices::getInstance(); |
| 607 | if ( !$services->getContentLanguage()->needsGenderDistinction() ) { |
| 608 | return; |
| 609 | } |
| 610 | |
| 611 | $nsInfo = $services->getNamespaceInfo(); |
| 612 | $namespaceField = $fieldPrefix . '_namespace'; |
| 613 | $titleField = $fieldPrefix . '_title'; |
| 614 | |
| 615 | $usernames = []; |
| 616 | foreach ( $res as $row ) { |
| 617 | if ( $nsInfo->hasGenderDistinction( $row->$namespaceField ) ) { |
| 618 | $usernames[] = $row->$titleField; |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | if ( $usernames === [] ) { |
| 623 | return; |
| 624 | } |
| 625 | |
| 626 | $genderCache = $services->getGenderCache(); |
| 627 | $genderCache->doQuery( $usernames, $fname ); |
| 628 | } |
| 629 | |
| 630 | // endregion -- end of utility methods |
| 631 | } |