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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | * @file |
| 19 | * @author Niklas Laxström |
| 20 | */ |
| 21 | |
| 22 | namespace MediaWiki\Cache; |
| 23 | |
| 24 | use MediaWiki\Context\RequestContext; |
| 25 | use MediaWiki\Linker\LinkTarget; |
| 26 | use MediaWiki\MediaWikiServices; |
| 27 | use MediaWiki\Title\NamespaceInfo; |
| 28 | use MediaWiki\User\Options\UserOptionsLookup; |
| 29 | use MediaWiki\User\UserIdentity; |
| 30 | use Wikimedia\Rdbms\IConnectionProvider; |
| 31 | |
| 32 | /** |
| 33 | * Look up "gender" user preference. |
| 34 | * |
| 35 | * This primarily used in MediaWiki\Title\MediaWikiTitleCodec for title formatting |
| 36 | * of pages in gendered namespace aliases, and in CoreParserFunctions for the |
| 37 | * `{{gender:}}` parser function. |
| 38 | * |
| 39 | * @since 1.18 |
| 40 | * @ingroup Cache |
| 41 | */ |
| 42 | class GenderCache { |
| 43 | /** @var string[] */ |
| 44 | protected $cache = []; |
| 45 | /** @var string|null */ |
| 46 | protected $default = null; |
| 47 | /** @var int */ |
| 48 | protected $misses = 0; |
| 49 | /** |
| 50 | * @internal Exposed for MediaWiki core unit tests. |
| 51 | * @var int |
| 52 | */ |
| 53 | protected $missLimit = 1000; |
| 54 | |
| 55 | private NamespaceInfo $nsInfo; |
| 56 | private ?IConnectionProvider $dbProvider; |
| 57 | private UserOptionsLookup $userOptionsLookup; |
| 58 | |
| 59 | public function __construct( |
| 60 | ?NamespaceInfo $nsInfo = null, |
| 61 | ?IConnectionProvider $dbProvider = null, |
| 62 | ?UserOptionsLookup $userOptionsLookup = null |
| 63 | ) { |
| 64 | $this->nsInfo = $nsInfo ?? MediaWikiServices::getInstance()->getNamespaceInfo(); |
| 65 | $this->dbProvider = $dbProvider; |
| 66 | $this->userOptionsLookup = $userOptionsLookup ?? MediaWikiServices::getInstance()->getUserOptionsLookup(); |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * Get the default gender option on this wiki. |
| 71 | * |
| 72 | * @return string |
| 73 | */ |
| 74 | protected function getDefault() { |
| 75 | $this->default ??= $this->userOptionsLookup->getDefaultOption( 'gender' ); |
| 76 | return $this->default; |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Get the gender option for given username. |
| 81 | * |
| 82 | * @param string|UserIdentity $username |
| 83 | * @param string|null $caller Calling method for database profiling |
| 84 | * @return string |
| 85 | */ |
| 86 | public function getGenderOf( $username, $caller = '' ) { |
| 87 | if ( $username instanceof UserIdentity ) { |
| 88 | $username = $username->getName(); |
| 89 | } |
| 90 | |
| 91 | $username = self::normalizeUsername( $username ); |
| 92 | if ( !isset( $this->cache[$username] ) ) { |
| 93 | if ( $this->misses < $this->missLimit || |
| 94 | RequestContext::getMain()->getUser()->getName() === $username |
| 95 | ) { |
| 96 | $this->misses++; |
| 97 | $this->doQuery( $username, $caller ); |
| 98 | } |
| 99 | if ( $this->misses === $this->missLimit ) { |
| 100 | // Log only once and don't bother incrementing beyond limit+1 |
| 101 | $this->misses++; |
| 102 | wfDebug( __METHOD__ . ': too many misses, returning default onwards' ); |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | return $this->cache[$username] ?? $this->getDefault(); |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Wrapper for doQuery that processes raw LinkBatch data. |
| 111 | * |
| 112 | * @param array<int,array<string,mixed>> $data |
| 113 | * @param string|null $caller |
| 114 | */ |
| 115 | public function doLinkBatch( array $data, $caller = '' ) { |
| 116 | $users = []; |
| 117 | foreach ( $data as $ns => $pagenames ) { |
| 118 | if ( $this->nsInfo->hasGenderDistinction( $ns ) ) { |
| 119 | $users += $pagenames; |
| 120 | } |
| 121 | } |
| 122 | $this->doQuery( array_keys( $users ), $caller ); |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * Wrapper for doQuery that processes a title array. |
| 127 | * |
| 128 | * @since 1.20 |
| 129 | * @param LinkTarget[] $titles |
| 130 | * @param string|null $caller Calling method for database profiling |
| 131 | */ |
| 132 | public function doTitlesArray( $titles, $caller = '' ) { |
| 133 | $users = []; |
| 134 | foreach ( $titles as $titleObj ) { |
| 135 | if ( $this->nsInfo->hasGenderDistinction( $titleObj->getNamespace() ) ) { |
| 136 | $users[] = $titleObj->getText(); |
| 137 | } |
| 138 | } |
| 139 | $this->doQuery( $users, $caller ); |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * Preload gender option for multiple user names. |
| 144 | * |
| 145 | * @param string[]|string $users Usernames |
| 146 | * @param string|null $caller Calling method for database profiling |
| 147 | */ |
| 148 | public function doQuery( $users, $caller = '' ) { |
| 149 | $default = $this->getDefault(); |
| 150 | |
| 151 | $usersToFetch = []; |
| 152 | foreach ( (array)$users as $value ) { |
| 153 | $name = self::normalizeUsername( $value ); |
| 154 | if ( !isset( $this->cache[$name] ) ) { |
| 155 | // This may be overwritten below by a fetched value |
| 156 | $this->cache[$name] = $default; |
| 157 | // T267054: We don't need to fetch data for invalid usernames, but filtering breaks DI |
| 158 | $usersToFetch[] = $name; |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | // Skip query when database is unavailable (e.g. via the installer) |
| 163 | if ( !$usersToFetch || !$this->dbProvider ) { |
| 164 | return; |
| 165 | } |
| 166 | |
| 167 | $caller = __METHOD__ . ( $caller ? "/$caller" : '' ); |
| 168 | |
| 169 | $res = $queryBuilder = $this->dbProvider->getReplicaDatabase()->newSelectQueryBuilder() |
| 170 | ->select( [ 'user_name', 'up_value' ] ) |
| 171 | ->from( 'user' ) |
| 172 | ->leftJoin( 'user_properties', null, [ 'user_id = up_user', 'up_property' => 'gender' ] ) |
| 173 | ->where( [ 'user_name' => $usersToFetch ] ) |
| 174 | ->caller( $caller ) |
| 175 | ->fetchResultSet(); |
| 176 | |
| 177 | foreach ( $res as $row ) { |
| 178 | $this->cache[$row->user_name] = $row->up_value ?: $default; |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | private static function normalizeUsername( $username ) { |
| 183 | // Strip off subpages |
| 184 | $indexSlash = strpos( $username, '/' ); |
| 185 | if ( $indexSlash !== false ) { |
| 186 | $username = substr( $username, 0, $indexSlash ); |
| 187 | } |
| 188 | |
| 189 | // normalize underscore/spaces |
| 190 | return strtr( $username, '_', ' ' ); |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | /** @deprecated class alias since 1.42 */ |
| 195 | class_alias( GenderCache::class, 'GenderCache' ); |