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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 | |
| 9 | namespace MediaWiki\Api; |
| 10 | |
| 11 | use MediaWiki\Cache\GenderCache; |
| 12 | use MediaWiki\Deferred\LinksUpdate\ImageLinksTable; |
| 13 | use MediaWiki\Deferred\LinksUpdate\PageLinksTable; |
| 14 | use MediaWiki\Deferred\LinksUpdate\TemplateLinksTable; |
| 15 | use MediaWiki\Linker\LinksMigration; |
| 16 | use MediaWiki\ParamValidator\TypeDef\NamespaceDef; |
| 17 | use MediaWiki\Title\NamespaceInfo; |
| 18 | use MediaWiki\Title\Title; |
| 19 | use Wikimedia\ParamValidator\ParamValidator; |
| 20 | use Wikimedia\ParamValidator\TypeDef\IntegerDef; |
| 21 | use Wikimedia\Rdbms\IExpression; |
| 22 | use Wikimedia\Rdbms\LikeValue; |
| 23 | |
| 24 | /** |
| 25 | * Query module to enumerate links from all pages together. |
| 26 | * |
| 27 | * @ingroup API |
| 28 | */ |
| 29 | class ApiQueryAllLinks extends ApiQueryGeneratorBase { |
| 30 | |
| 31 | private string $table; |
| 32 | private string $tablePrefix; |
| 33 | private string $indexTag; |
| 34 | /** @var int */ |
| 35 | private $dfltNamespace = NS_MAIN; |
| 36 | /** @var bool */ |
| 37 | private $hasNamespace = true; |
| 38 | /** @var array */ |
| 39 | private $props = []; |
| 40 | /** @var string|bool */ |
| 41 | private $virtualDomain = false; |
| 42 | |
| 43 | public function __construct( |
| 44 | ApiQuery $query, |
| 45 | string $moduleName, |
| 46 | private readonly NamespaceInfo $namespaceInfo, |
| 47 | private readonly GenderCache $genderCache, |
| 48 | private readonly LinksMigration $linksMigration, |
| 49 | ) { |
| 50 | switch ( $moduleName ) { |
| 51 | case 'alllinks': |
| 52 | $prefix = 'al'; |
| 53 | $this->table = 'pagelinks'; |
| 54 | $this->tablePrefix = 'pl_'; |
| 55 | $this->indexTag = 'l'; |
| 56 | $this->virtualDomain = PageLinksTable::VIRTUAL_DOMAIN; |
| 57 | break; |
| 58 | case 'alltransclusions': |
| 59 | $prefix = 'at'; |
| 60 | $this->table = 'templatelinks'; |
| 61 | $this->tablePrefix = 'tl_'; |
| 62 | $this->dfltNamespace = NS_TEMPLATE; |
| 63 | $this->indexTag = 't'; |
| 64 | $this->virtualDomain = TemplateLinksTable::VIRTUAL_DOMAIN; |
| 65 | break; |
| 66 | case 'allfileusages': |
| 67 | $prefix = 'af'; |
| 68 | $this->table = 'imagelinks'; |
| 69 | $this->tablePrefix = 'il_'; |
| 70 | $this->dfltNamespace = NS_FILE; |
| 71 | $this->hasNamespace = false; |
| 72 | $this->indexTag = 'f'; |
| 73 | $this->virtualDomain = ImageLinksTable::VIRTUAL_DOMAIN; |
| 74 | break; |
| 75 | case 'allredirects': |
| 76 | $prefix = 'ar'; |
| 77 | $this->table = 'redirect'; |
| 78 | $this->tablePrefix = 'rd_'; |
| 79 | $this->indexTag = 'r'; |
| 80 | $this->props = [ |
| 81 | 'fragment' => 'rd_fragment', |
| 82 | 'interwiki' => 'rd_interwiki', |
| 83 | ]; |
| 84 | break; |
| 85 | default: |
| 86 | ApiBase::dieDebug( __METHOD__, 'Unknown module name' ); |
| 87 | } |
| 88 | |
| 89 | parent::__construct( $query, $moduleName, $prefix ); |
| 90 | } |
| 91 | |
| 92 | public function execute() { |
| 93 | $this->run(); |
| 94 | } |
| 95 | |
| 96 | /** @inheritDoc */ |
| 97 | public function getCacheMode( $params ) { |
| 98 | return 'public'; |
| 99 | } |
| 100 | |
| 101 | /** @inheritDoc */ |
| 102 | public function executeGenerator( $resultPageSet ) { |
| 103 | $this->run( $resultPageSet ); |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * @param ApiPageSet|null $resultPageSet |
| 108 | * @return void |
| 109 | */ |
| 110 | private function run( $resultPageSet = null ) { |
| 111 | $this->setVirtualDomain( $this->virtualDomain ); |
| 112 | $db = $this->getDB(); |
| 113 | $params = $this->extractRequestParams(); |
| 114 | |
| 115 | $pfx = $this->tablePrefix; |
| 116 | |
| 117 | $usesLinktarget = isset( $this->linksMigration::$mapping[$this->table] ); |
| 118 | $targetIdColumn = ''; |
| 119 | if ( $usesLinktarget ) { |
| 120 | [ $nsField, $titleField ] = $this->linksMigration->getTitleFields( $this->table ); |
| 121 | $queryInfo = $this->linksMigration->getQueryInfo( $this->table, 'linktarget', 'STRAIGHT_JOIN' ); |
| 122 | $this->addTables( $queryInfo['tables'] ); |
| 123 | $this->addJoinConds( $queryInfo['joins'] ); |
| 124 | $targetIdColumn = "{$pfx}target_id"; |
| 125 | $this->addFields( [ $targetIdColumn ] ); |
| 126 | } else { |
| 127 | $nsField = "{$pfx}namespace"; |
| 128 | $titleField = "{$pfx}title"; |
| 129 | $this->addTables( $this->table ); |
| 130 | } |
| 131 | |
| 132 | $prop = array_fill_keys( $params['prop'], true ); |
| 133 | $fld_ids = isset( $prop['ids'] ); |
| 134 | $fld_title = isset( $prop['title'] ); |
| 135 | if ( $this->hasNamespace ) { |
| 136 | $namespace = $params['namespace']; |
| 137 | } else { |
| 138 | $namespace = $this->dfltNamespace; |
| 139 | } |
| 140 | |
| 141 | if ( $params['unique'] ) { |
| 142 | $matches = array_intersect_key( $prop, $this->props + [ 'ids' => 1 ] ); |
| 143 | if ( $matches ) { |
| 144 | $p = $this->getModulePrefix(); |
| 145 | $this->dieWithError( |
| 146 | [ |
| 147 | 'apierror-invalidparammix-cannotusewith', |
| 148 | "{$p}prop=" . implode( '|', array_keys( $matches ) ), |
| 149 | "{$p}unique" |
| 150 | ], |
| 151 | 'invalidparammix' |
| 152 | ); |
| 153 | } |
| 154 | $this->addOption( 'DISTINCT' ); |
| 155 | } |
| 156 | |
| 157 | if ( $this->hasNamespace ) { |
| 158 | $this->addWhereFld( $nsField, $namespace ); |
| 159 | } |
| 160 | |
| 161 | $continue = $params['continue'] !== null; |
| 162 | if ( $continue ) { |
| 163 | $op = $params['dir'] == 'descending' ? '<=' : '>='; |
| 164 | if ( $params['unique'] ) { |
| 165 | $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'string' ] ); |
| 166 | $this->addWhere( $db->expr( $titleField, $op, $cont[0] ) ); |
| 167 | } elseif ( !$usesLinktarget ) { |
| 168 | $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'string', 'int' ] ); |
| 169 | $this->addWhere( $db->buildComparison( $op, [ |
| 170 | $titleField => $cont[0], |
| 171 | "{$pfx}from" => $cont[1], |
| 172 | ] ) ); |
| 173 | } else { |
| 174 | $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'int', 'int' ] ); |
| 175 | $this->addWhere( $db->buildComparison( $op, [ |
| 176 | $targetIdColumn => $cont[0], |
| 177 | "{$pfx}from" => $cont[1], |
| 178 | ] ) ); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | // 'continue' always overrides 'from' |
| 183 | $from = $continue || $params['from'] === null ? null : |
| 184 | $this->titlePartToKey( $params['from'], $namespace ); |
| 185 | $to = $params['to'] === null ? null : |
| 186 | $this->titlePartToKey( $params['to'], $namespace ); |
| 187 | $this->addWhereRange( $titleField, 'newer', $from, $to ); |
| 188 | |
| 189 | if ( isset( $params['prefix'] ) ) { |
| 190 | $this->addWhere( |
| 191 | $db->expr( |
| 192 | $titleField, |
| 193 | IExpression::LIKE, |
| 194 | new LikeValue( $this->titlePartToKey( $params['prefix'], $namespace ), $db->anyString() ) |
| 195 | ) |
| 196 | ); |
| 197 | } |
| 198 | |
| 199 | $this->addFields( [ 'pl_title' => $titleField ] ); |
| 200 | $this->addFieldsIf( [ 'pl_from' => $pfx . 'from' ], !$params['unique'] ); |
| 201 | foreach ( $this->props as $name => $field ) { |
| 202 | $this->addFieldsIf( $field, isset( $prop[$name] ) ); |
| 203 | } |
| 204 | |
| 205 | $limit = $params['limit']; |
| 206 | $this->addOption( 'LIMIT', $limit + 1 ); |
| 207 | |
| 208 | $sort = ( $params['dir'] == 'descending' ? ' DESC' : '' ); |
| 209 | $orderBy = []; |
| 210 | if ( $usesLinktarget ) { |
| 211 | $orderBy[] = $targetIdColumn; |
| 212 | } else { |
| 213 | $orderBy[] = $titleField . $sort; |
| 214 | } |
| 215 | if ( !$params['unique'] ) { |
| 216 | $orderBy[] = $pfx . 'from' . $sort; |
| 217 | } |
| 218 | $this->addOption( 'ORDER BY', $orderBy ); |
| 219 | |
| 220 | $res = $this->select( __METHOD__ ); |
| 221 | |
| 222 | // Get gender information |
| 223 | if ( $resultPageSet === null && $res->numRows() && $this->namespaceInfo->hasGenderDistinction( $namespace ) ) { |
| 224 | $users = []; |
| 225 | foreach ( $res as $row ) { |
| 226 | $users[] = $row->pl_title; |
| 227 | } |
| 228 | if ( $users !== [] ) { |
| 229 | $this->genderCache->doQuery( $users, __METHOD__ ); |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | $pageids = []; |
| 234 | $titles = []; |
| 235 | $count = 0; |
| 236 | $result = $this->getResult(); |
| 237 | |
| 238 | foreach ( $res as $row ) { |
| 239 | if ( ++$count > $limit ) { |
| 240 | // We've reached the one extra which shows that there are |
| 241 | // additional pages to be had. Stop here... |
| 242 | if ( $params['unique'] ) { |
| 243 | $this->setContinueEnumParameter( 'continue', $row->pl_title ); |
| 244 | } elseif ( $usesLinktarget ) { |
| 245 | $this->setContinueEnumParameter( 'continue', $row->{$targetIdColumn} . '|' . $row->pl_from ); |
| 246 | } else { |
| 247 | $this->setContinueEnumParameter( 'continue', $row->pl_title . '|' . $row->pl_from ); |
| 248 | } |
| 249 | break; |
| 250 | } |
| 251 | |
| 252 | if ( $resultPageSet === null ) { |
| 253 | $vals = [ |
| 254 | ApiResult::META_TYPE => 'assoc', |
| 255 | ]; |
| 256 | if ( $fld_ids ) { |
| 257 | $vals['fromid'] = (int)$row->pl_from; |
| 258 | } |
| 259 | if ( $fld_title ) { |
| 260 | $title = Title::makeTitle( $namespace, $row->pl_title ); |
| 261 | ApiQueryBase::addTitleInfo( $vals, $title ); |
| 262 | } |
| 263 | foreach ( $this->props as $name => $field ) { |
| 264 | if ( isset( $prop[$name] ) && $row->$field !== null && $row->$field !== '' ) { |
| 265 | $vals[$name] = $row->$field; |
| 266 | } |
| 267 | } |
| 268 | $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals ); |
| 269 | if ( !$fit ) { |
| 270 | if ( $params['unique'] ) { |
| 271 | $this->setContinueEnumParameter( 'continue', $row->pl_title ); |
| 272 | } elseif ( $usesLinktarget ) { |
| 273 | $this->setContinueEnumParameter( 'continue', $row->{$targetIdColumn} . '|' . $row->pl_from ); |
| 274 | } else { |
| 275 | $this->setContinueEnumParameter( 'continue', $row->pl_title . '|' . $row->pl_from ); |
| 276 | } |
| 277 | break; |
| 278 | } |
| 279 | } elseif ( $params['unique'] ) { |
| 280 | $titles[] = Title::makeTitle( $namespace, $row->pl_title ); |
| 281 | } else { |
| 282 | $pageids[] = $row->pl_from; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | if ( $resultPageSet === null ) { |
| 287 | $result->addIndexedTagName( [ 'query', $this->getModuleName() ], $this->indexTag ); |
| 288 | } elseif ( $params['unique'] ) { |
| 289 | $resultPageSet->populateFromTitles( $titles ); |
| 290 | } else { |
| 291 | $resultPageSet->populateFromPageIDs( $pageids ); |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | /** @inheritDoc */ |
| 296 | public function getAllowedParams() { |
| 297 | $allowedParams = [ |
| 298 | 'continue' => [ |
| 299 | ApiBase::PARAM_HELP_MSG => 'api-help-param-continue', |
| 300 | ], |
| 301 | 'from' => null, |
| 302 | 'to' => null, |
| 303 | 'prefix' => null, |
| 304 | 'unique' => false, |
| 305 | 'prop' => [ |
| 306 | ParamValidator::PARAM_ISMULTI => true, |
| 307 | ParamValidator::PARAM_DEFAULT => 'title', |
| 308 | ParamValidator::PARAM_TYPE => [ 'ids', 'title', ...array_keys( $this->props ) ], |
| 309 | ApiBase::PARAM_HELP_MSG_PER_VALUE => [], |
| 310 | ], |
| 311 | 'namespace' => [ |
| 312 | ParamValidator::PARAM_DEFAULT => $this->dfltNamespace, |
| 313 | ParamValidator::PARAM_TYPE => 'namespace', |
| 314 | NamespaceDef::PARAM_EXTRA_NAMESPACES => [ NS_MEDIA, NS_SPECIAL ], |
| 315 | ], |
| 316 | 'limit' => [ |
| 317 | ParamValidator::PARAM_DEFAULT => 10, |
| 318 | ParamValidator::PARAM_TYPE => 'limit', |
| 319 | IntegerDef::PARAM_MIN => 1, |
| 320 | IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1, |
| 321 | IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2 |
| 322 | ], |
| 323 | 'dir' => [ |
| 324 | ParamValidator::PARAM_DEFAULT => 'ascending', |
| 325 | ParamValidator::PARAM_TYPE => [ |
| 326 | 'ascending', |
| 327 | 'descending' |
| 328 | ] |
| 329 | ], |
| 330 | ]; |
| 331 | if ( !$this->hasNamespace ) { |
| 332 | unset( $allowedParams['namespace'] ); |
| 333 | } |
| 334 | |
| 335 | return $allowedParams; |
| 336 | } |
| 337 | |
| 338 | /** @inheritDoc */ |
| 339 | protected function getExamplesMessages() { |
| 340 | $p = $this->getModulePrefix(); |
| 341 | $name = $this->getModuleName(); |
| 342 | $path = $this->getModulePath(); |
| 343 | |
| 344 | return [ |
| 345 | "action=query&list={$name}&{$p}from=B&{$p}prop=ids|title" |
| 346 | => "apihelp-$path-example-b", |
| 347 | "action=query&list={$name}&{$p}unique=&{$p}from=B" |
| 348 | => "apihelp-$path-example-unique", |
| 349 | "action=query&generator={$name}&g{$p}unique=&g{$p}from=B" |
| 350 | => "apihelp-$path-example-unique-generator", |
| 351 | "action=query&generator={$name}&g{$p}from=B" |
| 352 | => "apihelp-$path-example-generator", |
| 353 | ]; |
| 354 | } |
| 355 | |
| 356 | /** @inheritDoc */ |
| 357 | public function getHelpUrls() { |
| 358 | $name = ucfirst( $this->getModuleName() ); |
| 359 | |
| 360 | return "https://www.mediawiki.org/wiki/Special:MyLanguage/API:{$name}"; |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | /** @deprecated class alias since 1.43 */ |
| 365 | class_alias( ApiQueryAllLinks::class, 'ApiQueryAllLinks' ); |