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| 1 | <?php |
| 2 | /** |
| 3 | * @license GPL-2.0-or-later |
| 4 | * @file |
| 5 | */ |
| 6 | |
| 7 | namespace MediaWiki\User; |
| 8 | |
| 9 | use MediaWiki\HookContainer\HookRunner; |
| 10 | use MediaWiki\MediaWikiServices; |
| 11 | use MediaWiki\SpecialPage\SpecialPage; |
| 12 | use MediaWiki\Title\Title; |
| 13 | use Wikimedia\Rdbms\IDBAccessObject; |
| 14 | |
| 15 | /** |
| 16 | * Class to parse and build external user names |
| 17 | * @since 1.31 |
| 18 | */ |
| 19 | class ExternalUserNames { |
| 20 | |
| 21 | private string $usernamePrefix; |
| 22 | private bool $assignKnownUsers; |
| 23 | |
| 24 | /** |
| 25 | * @var bool[] |
| 26 | */ |
| 27 | private $triedCreations = []; |
| 28 | |
| 29 | /** |
| 30 | * @param string $usernamePrefix Prefix to apply to unknown (and possibly also known) usernames |
| 31 | * @param bool $assignKnownUsers Whether to apply the prefix to usernames that exist locally |
| 32 | */ |
| 33 | public function __construct( $usernamePrefix, $assignKnownUsers ) { |
| 34 | $this->usernamePrefix = rtrim( (string)$usernamePrefix, ':>' ); |
| 35 | $this->assignKnownUsers = (bool)$assignKnownUsers; |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Get a target Title to link a username. |
| 40 | * |
| 41 | * @param string $userName Username to link |
| 42 | * |
| 43 | * @return null|Title |
| 44 | */ |
| 45 | public static function getUserLinkTitle( $userName ) { |
| 46 | $pos = strpos( $userName, '>' ); |
| 47 | $services = MediaWikiServices::getInstance(); |
| 48 | if ( $pos !== false ) { |
| 49 | $iw = explode( ':', substr( $userName, 0, $pos ) ); |
| 50 | $firstIw = array_shift( $iw ); |
| 51 | $interwikiLookup = $services->getInterwikiLookup(); |
| 52 | if ( $interwikiLookup->isValidInterwiki( $firstIw ) ) { |
| 53 | $title = $services->getNamespaceInfo()->getCanonicalName( NS_USER ) . |
| 54 | ':' . substr( $userName, $pos + 1 ); |
| 55 | if ( $iw ) { |
| 56 | $title = implode( ':', $iw ) . ':' . $title; |
| 57 | } |
| 58 | return Title::makeTitle( NS_MAIN, $title, '', $firstIw ); |
| 59 | } |
| 60 | return null; |
| 61 | } else { |
| 62 | // Protect against invalid user names from old corrupt database rows, T232451 |
| 63 | if ( |
| 64 | $services->getUserNameUtils()->isIP( $userName ) |
| 65 | || $services->getUserNameUtils()->isValidIPRange( $userName ) |
| 66 | || $services->getUserNameUtils()->isValid( $userName ) |
| 67 | ) { |
| 68 | return SpecialPage::getTitleFor( 'Contributions', $userName ); |
| 69 | } else { |
| 70 | // Bad user name, no link |
| 71 | return null; |
| 72 | } |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * Add an interwiki prefix to the username, if appropriate |
| 78 | * |
| 79 | * This method does have a side-effect on SUL (single user login) wikis: Calling this calls the |
| 80 | * ImportHandleUnknownUser hook from the CentralAuth extension, which assigns a local ID to the |
| 81 | * global user name, if possible. No prefix is applied if this is successful. |
| 82 | * |
| 83 | * @see https://meta.wikimedia.org/wiki/Help:Unified_login |
| 84 | * @see https://www.mediawiki.org/wiki/Manual:Hooks/ImportHandleUnknownUser |
| 85 | * |
| 86 | * @param string $name |
| 87 | * @return string Either the unchanged username if it's a known local user (or not a valid |
| 88 | * username), otherwise the name with the prefix prepended. |
| 89 | */ |
| 90 | public function applyPrefix( $name ) { |
| 91 | $services = MediaWikiServices::getInstance(); |
| 92 | $userNameUtils = $services->getUserNameUtils(); |
| 93 | if ( $userNameUtils->getCanonical( $name, UserRigorOptions::RIGOR_USABLE ) === false ) { |
| 94 | return $name; |
| 95 | } |
| 96 | |
| 97 | if ( $this->assignKnownUsers ) { |
| 98 | $userIdentityLookup = $services->getUserIdentityLookup(); |
| 99 | $userIdentity = $userIdentityLookup->getUserIdentityByName( $name ); |
| 100 | if ( $userIdentity && $userIdentity->isRegistered() ) { |
| 101 | return $name; |
| 102 | } |
| 103 | |
| 104 | // See if any extension wants to create it. |
| 105 | if ( !isset( $this->triedCreations[$name] ) ) { |
| 106 | $this->triedCreations[$name] = true; |
| 107 | if ( !( new HookRunner( $services->getHookContainer() ) )->onImportHandleUnknownUser( $name ) ) { |
| 108 | $userIdentity = $userIdentityLookup->getUserIdentityByName( $name, IDBAccessObject::READ_LATEST ); |
| 109 | if ( $userIdentity && $userIdentity->isRegistered() ) { |
| 110 | return $name; |
| 111 | } |
| 112 | } |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | return $this->addPrefix( $name ); |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Add an interwiki prefix to the username regardless of circumstances |
| 121 | * |
| 122 | * @param string $name |
| 123 | * @return string Prefixed username, using ">" as separator |
| 124 | */ |
| 125 | public function addPrefix( $name ) { |
| 126 | return substr( $this->usernamePrefix . '>' . $name, 0, 255 ); |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * Tells whether the username is external or not |
| 131 | * |
| 132 | * @param string $username Username to check |
| 133 | * @return bool true if it's external, false otherwise. |
| 134 | */ |
| 135 | public static function isExternal( $username ) { |
| 136 | return str_contains( $username, '>' ); |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * Get local part of the user name |
| 141 | * |
| 142 | * @param string $username Username to get |
| 143 | * @return string |
| 144 | */ |
| 145 | public static function getLocal( $username ) { |
| 146 | if ( !self::isExternal( $username ) ) { |
| 147 | return $username; |
| 148 | } |
| 149 | |
| 150 | return substr( $username, strpos( $username, '>' ) + 1 ); |
| 151 | } |
| 152 | |
| 153 | } |
| 154 | |
| 155 | /** @deprecated class alias since 1.41 */ |
| 156 | class_alias( ExternalUserNames::class, 'ExternalUserNames' ); |