Setup.php

Go to the documentation of this file.

<?php
use MediaWiki\HeaderCallback;
use MediaWiki\Logger\LoggerFactory;
use MediaWiki\MediaWikiServices;
use MediaWiki\Settings\Config\GlobalConfigBuilder;
use MediaWiki\Settings\Config\PhpIniSink;
use MediaWiki\Settings\SettingsBuilder;
use Psr\Log\LoggerInterface;
use Wikimedia\RequestTimeout\RequestTimeout;
 
// This file must be included from a valid entry point (e.g. WebStart.php, Maintenance.php)
if ( !defined( 'MEDIAWIKI' ) ) {
    exit( 1 );
}
 
// This file must have global scope.
$wgScopeTest = 'MediaWiki Setup.php scope test';
if ( !isset( $GLOBALS['wgScopeTest'] ) || $GLOBALS['wgScopeTest'] !== $wgScopeTest ) {
    echo "Error, Setup.php must be included from the file scope.\n";
    die( 1 );
}
unset( $wgScopeTest );
 
// PHP must not be configured to overload mbstring functions. (T5782, T122807)
// This was deprecated by upstream in PHP 7.2, likely to be removed in PHP 8.0.
if ( ini_get( 'mbstring.func_overload' ) ) {
    die( 'MediaWiki does not support installations where mbstring.func_overload is non-zero.' );
}
 
// The MW_ENTRY_POINT constant must always exists, to make it safe to access.
// For compat, we do support older and custom MW entryoints that don't set this,
// in which case we assign a default here.
if ( !defined( 'MW_ENTRY_POINT' ) ) {
    define( 'MW_ENTRY_POINT', 'unknown' );
}
 
require_once "$IP/includes/AutoLoader.php";
require_once "$IP/includes/Defines.php";
 
// Load composer's autoloader if present
if ( is_readable( "$IP/vendor/autoload.php" ) ) {
    require_once "$IP/vendor/autoload.php";
} elseif ( file_exists( "$IP/vendor/autoload.php" ) ) {
    die( "$IP/vendor/autoload.php exists but is not readable" );
}
 
// Assert that composer dependencies were successfully loaded
if ( !interface_exists( LoggerInterface::class ) ) {
    $message = (
        'MediaWiki requires the <a href="https://github.com/php-fig/log">PSR-3 logging ' .
        "library</a> to be present. This library is not embedded directly in MediaWiki's " .
        "git repository and must be installed separately by the end user.\n\n" .
        'Please see the <a href="https://www.mediawiki.org/wiki/Download_from_Git' .
        '#Fetch_external_libraries">instructions for installing libraries</a> on mediawiki.org ' .
        'for help on installing the required components.'
    );
    echo $message;
    trigger_error( $message, E_USER_ERROR );
}
 
// Define $wgSettings for use in DefaultSettings.php and in LocalSettings.php
global $wgSettings; // explicitly global, so it works with wfRequireOnceInGlobalScope()
$wgSettings = new SettingsBuilder(
    $IP,
    ExtensionRegistry::getInstance(),
    new GlobalConfigBuilder( 'wg' ),
    new PhpIniSink()
);
 
require_once "$IP/includes/DefaultSettings.php";
require_once "$IP/includes/GlobalFunctions.php";
 
HeaderCallback::register();
 
// Set the encoding used by PHP for reading HTTP input, and writing output.
// This is also the default for mbstring functions.
mb_internal_encoding( 'UTF-8' );
 
// Make any default settings available in globals for use in LocalSettings.php
$wgSettings->apply();
 
if ( defined( 'MW_CONFIG_CALLBACK' ) ) {
    call_user_func( MW_CONFIG_CALLBACK );
} else {
    if ( !defined( 'MW_CONFIG_FILE' ) ) {
        define( 'MW_CONFIG_FILE', "$IP/LocalSettings.php" );
    }
    require_once MW_CONFIG_FILE;
}
 
// Make settings loaded by LocalSettings.php available in globals for use here
$wgSettings->apply();
 
if ( defined( 'MW_SETUP_CALLBACK' ) ) {
    call_user_func( MW_SETUP_CALLBACK );
    // Make any additional settings available in globals for use here
    $wgSettings->apply();
}
 
// All settings should be loaded now.
$wgSettings->finalize();
 
// Start time limit
if ( $wgRequestTimeLimit && !$wgCommandLineMode ) {
    RequestTimeout::singleton()->setWallTimeLimit( $wgRequestTimeLimit );
}
 
ExtensionRegistry::getInstance()->loadFromQueue();
// Don't let any other extensions load
ExtensionRegistry::getInstance()->finish();
 
// Set an appropriate locale (T291234)
// setlocale() will return the locale name actually set.
// The putenv() is meant to propagate the choice of locale to shell commands
// so that they will interpret UTF-8 correctly. If you have a problem with a
// shell command and need to send a special locale, you can override the locale
// with Command::environment().
putenv( "LC_ALL=" . setlocale( LC_ALL, 'C.UTF-8', 'C' ) );
 
if ( $wgScript === false ) {
    $wgScript = "$wgScriptPath/index.php";
}
if ( $wgLoadScript === false ) {
    $wgLoadScript = "$wgScriptPath/load.php";
}
if ( $wgRestPath === false ) {
    $wgRestPath = "$wgScriptPath/rest.php";
}
if ( $wgArticlePath === false ) {
    if ( $wgUsePathInfo ) {
        $wgArticlePath = "$wgScript/$1";
    } else {
        $wgArticlePath = "$wgScript?title=$1";
    }
}
if ( $wgResourceBasePath === null ) {
    $wgResourceBasePath = $wgScriptPath;
}
if ( $wgStylePath === false ) {
    $wgStylePath = "$wgResourceBasePath/skins";
}
if ( $wgLocalStylePath === false ) {
    // Avoid wgResourceBasePath here since that may point to a different domain (e.g. CDN)
    $wgLocalStylePath = "$wgScriptPath/skins";
}
if ( $wgExtensionAssetsPath === false ) {
    $wgExtensionAssetsPath = "$wgResourceBasePath/extensions";
}
 
// For backwards compatibility, the value of wgLogos is copied to wgLogo.
// This is because some extensions/skins may be using $config->get('Logo')
// to access the value.
if ( $wgLogos !== false && isset( $wgLogos['1x'] ) ) {
    $wgLogo = $wgLogos['1x'];
}
if ( $wgLogo === false ) {
    $wgLogo = "$wgResourceBasePath/resources/assets/wiki.png";
}
 
if ( $wgUploadPath === false ) {
    $wgUploadPath = "$wgScriptPath/images";
}
if ( $wgUploadDirectory === false ) {
    $wgUploadDirectory = "$IP/images";
}
if ( $wgReadOnlyFile === false ) {
    $wgReadOnlyFile = "{$wgUploadDirectory}/lock_yBgMBwiR";
}
if ( $wgFileCacheDirectory === false ) {
    $wgFileCacheDirectory = "{$wgUploadDirectory}/cache";
}
if ( $wgDeletedDirectory === false ) {
    $wgDeletedDirectory = "{$wgUploadDirectory}/deleted";
}
if ( $wgGitInfoCacheDirectory === false && $wgCacheDirectory !== false ) {
    $wgGitInfoCacheDirectory = "{$wgCacheDirectory}/gitinfo";
}
if ( $wgSharedPrefix === false ) {
    $wgSharedPrefix = $wgDBprefix;
}
if ( $wgSharedSchema === false ) {
    $wgSharedSchema = $wgDBmwschema;
}
if ( $wgMetaNamespace === false ) {
    $wgMetaNamespace = str_replace( ' ', '_', $wgSitename );
}
 
if ( $wgMainWANCache === false ) {
    // Create a WAN cache from $wgMainCacheType
    $wgMainWANCache = 'mediawiki-main-default';
    $wgWANObjectCaches[$wgMainWANCache] = [
        'class'    => WANObjectCache::class,
        'cacheId'  => $wgMainCacheType,
    ];
}
 
// Back-compat
if ( isset( $wgFileBlacklist ) ) {
    $wgProhibitedFileExtensions = array_merge( $wgProhibitedFileExtensions, $wgFileBlacklist );
} else {
    $wgFileBlacklist = $wgProhibitedFileExtensions;
}
if ( isset( $wgMimeTypeBlacklist ) ) {
    $wgMimeTypeExclusions = array_merge( $wgMimeTypeExclusions, $wgMimeTypeBlacklist );
} else {
    $wgMimeTypeBlacklist = $wgMimeTypeExclusions;
}
if ( isset( $wgEnableUserEmailBlacklist ) ) {
    $wgEnableUserEmailMuteList = $wgEnableUserEmailBlacklist;
} else {
    $wgEnableUserEmailBlacklist = $wgEnableUserEmailMuteList;
}
if ( isset( $wgShortPagesNamespaceBlacklist ) ) {
    $wgShortPagesNamespaceExclusions = $wgShortPagesNamespaceBlacklist;
} else {
    $wgShortPagesNamespaceBlacklist = $wgShortPagesNamespaceExclusions;
}
 
// Prohibited file extensions shouldn't appear on the "allowed" list
$wgFileExtensions = array_values( array_diff( $wgFileExtensions, $wgProhibitedFileExtensions ) );
 
// Fix path to icon images after they were moved in 1.24
if ( $wgRightsIcon ) {
    $wgRightsIcon = str_replace(
        "{$wgStylePath}/common/images/",
        "{$wgResourceBasePath}/resources/assets/licenses/",
        $wgRightsIcon
    );
}
 
if ( isset( $wgFooterIcons['copyright']['copyright'] )
    && $wgFooterIcons['copyright']['copyright'] === []
) {
    if ( $wgRightsIcon || $wgRightsText ) {
        $wgFooterIcons['copyright']['copyright'] = [
            'url' => $wgRightsUrl,
            'src' => $wgRightsIcon,
            'alt' => $wgRightsText,
        ];
    }
}
 
if ( isset( $wgFooterIcons['poweredby'] )
    && isset( $wgFooterIcons['poweredby']['mediawiki'] )
    && $wgFooterIcons['poweredby']['mediawiki']['src'] === null
) {
    $wgFooterIcons['poweredby']['mediawiki']['src'] =
        "$wgResourceBasePath/resources/assets/poweredby_mediawiki_88x31.png";
    $wgFooterIcons['poweredby']['mediawiki']['srcset'] =
        "$wgResourceBasePath/resources/assets/poweredby_mediawiki_132x47.png 1.5x, " .
        "$wgResourceBasePath/resources/assets/poweredby_mediawiki_176x62.png 2x";
}
 
$wgNamespaceProtection[NS_MEDIAWIKI] = 'editinterface';
 
$wgLockManagers[] = [
    'name' => 'fsLockManager',
    'class' => FSLockManager::class,
    'lockDirectory' => "{$wgUploadDirectory}/lockdir",
];
$wgLockManagers[] = [
    'name' => 'nullLockManager',
    'class' => NullLockManager::class,
];
 
$wgGalleryOptions += [
    'imagesPerRow' => 0,
    'imageWidth' => 120,
    'imageHeight' => 120,
    'captionLength' => true,
    'showBytes' => true,
    'showDimensions' => true,
    'mode' => 'traditional',
];
 
if ( !$wgLocalFileRepo ) {
    $wgLocalFileRepo = [
        'class' => LocalRepo::class,
        'name' => 'local',
        'directory' => $wgUploadDirectory,
        'scriptDirUrl' => $wgScriptPath,
        'url' => $wgUploadBaseUrl ? $wgUploadBaseUrl . $wgUploadPath : $wgUploadPath,
        'hashLevels' => $wgHashedUploadDirectory ? 2 : 0,
        'thumbScriptUrl' => $wgThumbnailScriptPath,
        'transformVia404' => !$wgGenerateThumbnailOnParse,
        'deletedDir' => $wgDeletedDirectory,
        'deletedHashLevels' => $wgHashedUploadDirectory ? 3 : 0,
        'updateCompatibleMetadata' => $wgUpdateCompatibleMetadata,
        'reserializeMetadata' => $wgUpdateCompatibleMetadata,
    ];
}
 
if ( !isset( $wgLocalFileRepo['backend'] ) ) {
    // Create a default FileBackend name.
    // FileBackendGroup will register a default, if absent from $wgFileBackends.
    $wgLocalFileRepo['backend'] = $wgLocalFileRepo['name'] . '-backend';
}
 
if ( $wgUseSharedUploads ) {
    if ( $wgSharedUploadDBname ) {
        $wgForeignFileRepos[] = [
            'class' => ForeignDBRepo::class,
            'name' => 'shared',
            'directory' => $wgSharedUploadDirectory,
            'url' => $wgSharedUploadPath,
            'hashLevels' => $wgHashedSharedUploadDirectory ? 2 : 0,
            'thumbScriptUrl' => $wgSharedThumbnailScriptPath,
            'transformVia404' => !$wgGenerateThumbnailOnParse,
            'dbType' => $wgDBtype,
            'dbServer' => $wgDBserver,
            'dbUser' => $wgDBuser,
            'dbPassword' => $wgDBpassword,
            'dbName' => $wgSharedUploadDBname,
            'dbFlags' => ( $wgDebugDumpSql ? DBO_DEBUG : 0 ) | DBO_DEFAULT,
            'tablePrefix' => $wgSharedUploadDBprefix,
            'hasSharedCache' => $wgCacheSharedUploads,
            'descBaseUrl' => $wgRepositoryBaseUrl,
            'fetchDescription' => $wgFetchCommonsDescriptions,
        ];
    } else {
        $wgForeignFileRepos[] = [
            'class' => FileRepo::class,
            'name' => 'shared',
            'directory' => $wgSharedUploadDirectory,
            'url' => $wgSharedUploadPath,
            'hashLevels' => $wgHashedSharedUploadDirectory ? 2 : 0,
            'thumbScriptUrl' => $wgSharedThumbnailScriptPath,
            'transformVia404' => !$wgGenerateThumbnailOnParse,
            'descBaseUrl' => $wgRepositoryBaseUrl,
            'fetchDescription' => $wgFetchCommonsDescriptions,
        ];
    }
}
if ( $wgUseInstantCommons ) {
    $wgForeignFileRepos[] = [
        'class' => ForeignAPIRepo::class,
        'name' => 'wikimediacommons',
        'apibase' => 'https://commons.wikimedia.org/w/api.php',
        'url' => 'https://upload.wikimedia.org/wikipedia/commons',
        'thumbUrl' => 'https://upload.wikimedia.org/wikipedia/commons/thumb',
        'hashLevels' => 2,
        'transformVia404' => true,
        'fetchDescription' => true,
        'descriptionCacheExpiry' => 43200,
        'apiThumbCacheExpiry' => 0,
    ];
}
foreach ( $wgForeignFileRepos as &$repo ) {
    if ( !isset( $repo['directory'] ) && $repo['class'] === ForeignAPIRepo::class ) {
        $repo['directory'] = $wgUploadDirectory; // b/c
    }
    if ( !isset( $repo['backend'] ) ) {
        $repo['backend'] = $repo['name'] . '-backend';
    }
}
unset( $repo ); // no global pollution; destroy reference
 
$rcMaxAgeDays = $wgRCMaxAge / ( 3600 * 24 );
// Ensure that default user options are not invalid, since that breaks Special:Preferences
$wgDefaultUserOptions['rcdays'] = min(
    $wgDefaultUserOptions['rcdays'],
    ceil( $rcMaxAgeDays )
);
$wgDefaultUserOptions['watchlistdays'] = min(
    $wgDefaultUserOptions['watchlistdays'],
    ceil( $rcMaxAgeDays )
);
unset( $rcMaxAgeDays );
 
if ( !$wgCookiePrefix ) {
    if ( $wgSharedDB && $wgSharedPrefix && in_array( 'user', $wgSharedTables ) ) {
        $wgCookiePrefix = $wgSharedDB . '_' . $wgSharedPrefix;
    } elseif ( $wgSharedDB && in_array( 'user', $wgSharedTables ) ) {
        $wgCookiePrefix = $wgSharedDB;
    } elseif ( $wgDBprefix ) {
        $wgCookiePrefix = $wgDBname . '_' . $wgDBprefix;
    } else {
        $wgCookiePrefix = $wgDBname;
    }
}
$wgCookiePrefix = strtr( $wgCookiePrefix, '=,; +."\'\\[', '__________' );
 
if ( $wgEnableEmail ) {
    $wgUseEnotif = $wgEnotifUserTalk || $wgEnotifWatchlist;
} else {
    // Disable all other email settings automatically if $wgEnableEmail
    // is set to false. - T65678
    $wgAllowHTMLEmail = false;
    $wgEmailAuthentication = false; // do not require auth if you're not sending email anyway
    $wgEnableUserEmail = false;
    $wgEnotifFromEditor = false;
    $wgEnotifImpersonal = false;
    $wgEnotifMaxRecips = 0;
    $wgEnotifMinorEdits = false;
    $wgEnotifRevealEditorAddress = false;
    $wgEnotifUseRealName = false;
    $wgEnotifUserTalk = false;
    $wgEnotifWatchlist = false;
    unset( $wgGroupPermissions['user']['sendemail'] );
    $wgUseEnotif = false;
    $wgUserEmailUseReplyTo = false;
    $wgUsersNotifiedOnAllChanges = [];
}
 
if ( $wgLocaltimezone === null ) {
    // This defaults to the `date.timezone` value of the PHP INI option. If this option is not set,
    // it falls back to UTC. Prior to PHP 7.0, this fallback produced a warning.
    $wgLocaltimezone = date_default_timezone_get();
}
date_default_timezone_set( $wgLocaltimezone );
if ( $wgLocalTZoffset === null ) {
    $wgLocalTZoffset = (int)date( 'Z' ) / 60;
}
// The part after the System| is ignored, but rest of MW fills it out as the local offset.
$wgDefaultUserOptions['timecorrection'] = "System|$wgLocalTZoffset";
 
if ( !$wgDBerrorLogTZ ) {
    $wgDBerrorLogTZ = $wgLocaltimezone;
}
 
$wgCanonicalNamespaceNames = NamespaceInfo::CANONICAL_NAMES;
 
// @todo UGLY UGLY
if ( is_array( $wgExtraNamespaces ) ) {
    $wgCanonicalNamespaceNames += $wgExtraNamespaces;
}
 
// Hard-deprecate setting $wgDummyLanguageCodes in LocalSettings.php
if ( count( $wgDummyLanguageCodes ) !== 0 ) {
    wfDeprecated( '$wgDummyLanguageCodes', '1.29' );
}
// Merge in the legacy language codes, incorporating overrides from the config
$wgDummyLanguageCodes += [
    // Internal language codes of the private-use area which get mapped to
    // themselves.
    'qqq' => 'qqq', // Used for message documentation
    'qqx' => 'qqx', // Used for viewing message keys
] + $wgExtraLanguageCodes + LanguageCode::getDeprecatedCodeMapping();
// Merge in (inverted) BCP 47 mappings
foreach ( LanguageCode::getNonstandardLanguageCodeMapping() as $code => $bcp47 ) {
    $bcp47 = strtolower( $bcp47 ); // force case-insensitivity
    if ( !isset( $wgDummyLanguageCodes[$bcp47] ) ) {
        $wgDummyLanguageCodes[$bcp47] = $wgDummyLanguageCodes[$code] ?? $code;
    }
}
unset( $code ); // no global pollution; destroy reference
unset( $bcp47 ); // no global pollution; destroy reference
 
// Temporary backwards-compatibility reading of old replica lag settings as of MediaWiki 1.36,
// to support sysadmins who fail to update their settings immediately:
 
if ( isset( $wgSlaveLagWarning ) ) {
    // If the old value is set to something other than the default, use it.
    if ( $wgDatabaseReplicaLagWarning === 10 && $wgSlaveLagWarning !== 10 ) {
        $wgDatabaseReplicaLagWarning = $wgSlaveLagWarning;
        wfDeprecated(
            '$wgSlaveLagWarning set but $wgDatabaseReplicaLagWarning unchanged; using $wgSlaveLagWarning',
            '1.36'
        );
    }
} else {
    // Backwards-compatibility for extensions that read this value.
    $wgSlaveLagWarning = $wgDatabaseReplicaLagWarning;
}
 
if ( isset( $wgSlaveLagCritical ) ) {
    // If the old value is set to something other than the default, use it.
    if ( $wgDatabaseReplicaLagCritical === 30 && $wgSlaveLagCritical !== 30 ) {
        $wgDatabaseReplicaLagCritical = $wgSlaveLagCritical;
        wfDeprecated(
            '$wgSlaveLagCritical set but $wgDatabaseReplicaLagCritical unchanged; using $wgSlaveLagCritical',
            '1.36'
        );
    }
} else {
    // Backwards-compatibility for extensions that read this value.
    $wgSlaveLagCritical = $wgDatabaseReplicaLagCritical;
}
 
if ( $wgInvalidateCacheOnLocalSettingsChange && defined( 'MW_CONFIG_FILE' ) ) {
    Wikimedia\suppressWarnings();
    $wgCacheEpoch = max( $wgCacheEpoch, gmdate( 'YmdHis', filemtime( MW_CONFIG_FILE ) ) );
    Wikimedia\restoreWarnings();
}
 
if ( $wgNewUserLog ) {
    // Add new user log type
    $wgLogTypes[] = 'newusers';
    $wgLogNames['newusers'] = 'newuserlogpage';
    $wgLogHeaders['newusers'] = 'newuserlogpagetext';
    $wgLogActionsHandlers['newusers/newusers'] = NewUsersLogFormatter::class;
    $wgLogActionsHandlers['newusers/create'] = NewUsersLogFormatter::class;
    $wgLogActionsHandlers['newusers/create2'] = NewUsersLogFormatter::class;
    $wgLogActionsHandlers['newusers/byemail'] = NewUsersLogFormatter::class;
    $wgLogActionsHandlers['newusers/autocreate'] = NewUsersLogFormatter::class;
}
 
if ( $wgPageCreationLog ) {
    // Add page creation log type
    $wgLogTypes[] = 'create';
    $wgLogActionsHandlers['create/create'] = LogFormatter::class;
}
 
if ( $wgPageLanguageUseDB ) {
    $wgLogTypes[] = 'pagelang';
    $wgLogActionsHandlers['pagelang/pagelang'] = PageLangLogFormatter::class;
}
 
if ( $wgCookieSecure === 'detect' ) {
    $wgCookieSecure = $wgForceHTTPS || ( WebRequest::detectProtocol() === 'https' );
}
 
// Backwards compatibility with old password limits
if ( $wgMinimalPasswordLength !== false ) {
    $wgPasswordPolicy['policies']['default']['MinimalPasswordLength'] = $wgMinimalPasswordLength;
}
 
if ( $wgMaximalPasswordLength !== false ) {
    $wgPasswordPolicy['policies']['default']['MaximalPasswordLength'] = $wgMaximalPasswordLength;
}
 
if ( $wgPHPSessionHandling !== 'enable' &&
    $wgPHPSessionHandling !== 'warn' &&
    $wgPHPSessionHandling !== 'disable'
) {
    $wgPHPSessionHandling = 'warn';
}
if ( defined( 'MW_NO_SESSION' ) ) {
    // If the entry point wants no session, force 'disable' here unless they
    // specifically set it to the (undocumented) 'warn'.
    $wgPHPSessionHandling = MW_NO_SESSION === 'warn' ? 'warn' : 'disable';
}
 
MWDebug::setup();
 
// Enable the global service locator.
// Trivial expansion of site configuration should go before this point.
// Any non-trivial expansion that requires calling into MediaWikiServices or other parts of MW.
MediaWikiServices::allowGlobalInstance();
 
// Define a constant that indicates that the bootstrapping of the service locator
// is complete.
define( 'MW_SERVICE_BOOTSTRAP_COMPLETE', 1 );
 
MWExceptionHandler::installHandler();
 
// Non-trivial validation of: $wgServer
// The FatalError page only renders cleanly after MWExceptionHandler is installed.
if ( $wgServer === false ) {
    // T30798: $wgServer must be explicitly set
    throw new FatalError(
        '$wgServer must be set in LocalSettings.php. ' .
        'See <a href="https://www.mediawiki.org/wiki/Manual:$wgServer">' .
        'https://www.mediawiki.org/wiki/Manual:$wgServer</a>.'
    );
}
 
// Non-trivial expansion of: $wgCanonicalServer, $wgServerName.
// These require calling global functions.
// Also here are other settings that further depend on these two.
if ( $wgCanonicalServer === false ) {
    $wgCanonicalServer = wfExpandUrl( $wgServer, PROTO_HTTP );
}
$wgVirtualRestConfig['global']['domain'] = $wgCanonicalServer;
 
$serverParts = wfParseUrl( $wgCanonicalServer );
if ( $wgServerName !== false ) {
    wfWarn( '$wgServerName should be derived from $wgCanonicalServer, '
        . 'not customized. Overwriting $wgServerName.' );
}
$wgServerName = $serverParts['host'];
unset( $serverParts );
 
// $wgEmergencyContact and $wgPasswordSender may be false or empty string (T104142)
if ( !$wgEmergencyContact ) {
    $wgEmergencyContact = 'wikiadmin@' . $wgServerName;
}
if ( !$wgPasswordSender ) {
    $wgPasswordSender = 'apache@' . $wgServerName;
}
if ( !$wgNoReplyAddress ) {
    $wgNoReplyAddress = $wgPasswordSender;
}
 
// Non-trivial expansion of: $wgSecureLogin
// (due to calling wfWarn).
if ( $wgSecureLogin && substr( $wgServer, 0, 2 ) !== '//' ) {
    $wgSecureLogin = false;
    wfWarn( 'Secure login was enabled on a server that only supports '
        . 'HTTP or HTTPS. Disabling secure login.' );
}
 
// Now that GlobalFunctions is loaded, set defaults that depend on it.
if ( $wgTmpDirectory === false ) {
    $wgTmpDirectory = wfTempDir();
}
 
if ( $wgSharedDB && $wgSharedTables ) {
    // Apply $wgSharedDB table aliases for the local LB (all non-foreign DB connections)
    MediaWikiServices::getInstance()->getDBLoadBalancer()->setTableAliases(
        array_fill_keys(
            $wgSharedTables,
            [
                'dbname' => $wgSharedDB,
                'schema' => $wgSharedSchema,
                'prefix' => $wgSharedPrefix
            ]
        )
    );
}
 
// Raise the memory limit if it's too low
// NOTE: This use wfDebug, and must remain after the MWDebug::setup() call.
wfMemoryLimit( $wgMemoryLimit );
 
// Initialize the request object in $wgRequest
$wgRequest = RequestContext::getMain()->getRequest(); // BackCompat
 
// Make sure that object caching does not undermine the ChronologyProtector improvements
if ( $wgRequest->getCookie( 'UseDC', '' ) === 'master' ) {
    // The user is pinned to the primary DC, meaning that they made recent changes which should
    // be reflected in their subsequent web requests. Avoid the use of interim cache keys because
    // they use a blind TTL and could be stale if an object changes twice in a short time span.
    MediaWikiServices::getInstance()->getMainWANObjectCache()->useInterimHoldOffCaching( false );
}
 
// Useful debug output
( static function () {
    global $wgCommandLineMode, $wgRequest;
    $logger = LoggerFactory::getInstance( 'wfDebug' );
    if ( $wgCommandLineMode ) {
        $self = $_SERVER['PHP_SELF'] ?? '';
        $logger->debug( "\n\nStart command line script $self" );
    } else {
        $debug = "\n\nStart request {$wgRequest->getMethod()} {$wgRequest->getRequestURL()}\n";
        $debug .= "IP: " . $wgRequest->getIP() . "\n";
        $debug .= "HTTP HEADERS:\n";
        foreach ( $wgRequest->getAllHeaders() as $name => $value ) {
            $debug .= "$name: $value\n";
        }
        $debug .= "(end headers)";
        $logger->debug( $debug );
    }
} )();
 
// Most of the config is out, some might want to run hooks here.
Hooks::runner()->onSetupAfterCache();
 
// Now that variant lists may be available, parse any action paths and article paths
// as query parameters.
//
// Skip title interpolation on API queries where it is useless and sometimes harmful (T18019).
//
// Optimization: Skip on load.php and all other entrypoints besides index.php to save time.
//
// TODO: Figure out if this can be safely done after everything else in Setup.php (e.g. any
// hooks or other state that would miss this?). If so, move to wfIndexMain or MediaWiki::run.
if ( MW_ENTRY_POINT === 'index' ) {
    $wgRequest->interpolateTitle();
}
 
$wgInitialSessionId = null;
if ( !defined( 'MW_NO_SESSION' ) && !$wgCommandLineMode ) {
    // If session.auto_start is there, we can't touch session name
    if ( $wgPHPSessionHandling !== 'disable' && !wfIniGetBool( 'session.auto_start' ) ) {
        HeaderCallback::warnIfHeadersSent();
        session_name( $wgSessionName ?: $wgCookiePrefix . '_session' );
    }
 
    // Create the SessionManager singleton and set up our session handler,
    // unless we're specifically asked not to.
    if ( !defined( 'MW_NO_SESSION_HANDLER' ) ) {
        MediaWiki\Session\PHPSessionHandler::install(
            MediaWiki\Session\SessionManager::singleton()
        );
    }
 
    $contLang = MediaWikiServices::getInstance()->getContentLanguage();
 
    // Initialize the session
    try {
        $session = MediaWiki\Session\SessionManager::getGlobalSession();
    } catch ( MediaWiki\Session\SessionOverflowException $ex ) {
        // The exception is because the request had multiple possible
        // sessions tied for top priority. Report this to the user.
        $list = [];
        foreach ( $ex->getSessionInfos() as $info ) {
            $list[] = $info->getProvider()->describe( $contLang );
        }
        $list = $contLang->listToText( $list );
        throw new HttpError( 400,
            Message::newFromKey( 'sessionmanager-tie', $list )->inLanguage( $contLang )
        );
    }
 
    unset( $contLang );
 
    if ( $session->isPersistent() ) {
        $wgInitialSessionId = $session->getSessionId();
    }
 
    $session->renew();
    if ( MediaWiki\Session\PHPSessionHandler::isEnabled() &&
        ( $session->isPersistent() || $session->shouldRememberUser() ) &&
        session_id() !== $session->getId()
    ) {
        // Start the PHP-session for backwards compatibility
        if ( session_id() !== '' ) {
            wfDebugLog( 'session', 'PHP session {old_id} was already started, changing to {new_id}', 'all', [
                'old_id' => session_id(),
                'new_id' => $session->getId(),
            ] );
            session_write_close();
        }
        session_id( $session->getId() );
        session_start();
    }
 
    unset( $session );
} else {
    // Even if we didn't set up a global Session, still install our session
    // handler unless specifically requested not to.
    if ( !defined( 'MW_NO_SESSION_HANDLER' ) ) {
        MediaWiki\Session\PHPSessionHandler::install(
            MediaWiki\Session\SessionManager::singleton()
        );
    }
}
 
$wgUser = new StubGlobalUser( RequestContext::getMain()->getUser() ); // BackCompat
register_shutdown_function( static function () {
    StubGlobalUser::$destructorDeprecationDisarmed = true;
} );
 
$wgLang = new StubUserLang;
 
$wgOut = RequestContext::getMain()->getOutput(); // BackCompat
 
$wgParser = new DeprecatedGlobal( 'wgParser', static function () {
    return MediaWikiServices::getInstance()->getParser();
}, '1.32' );
 
$wgTitle = null;
 
// Extension setup functions
// Entries should be added to this variable during the inclusion
// of the extension file. This allows the extension to perform
// any necessary initialisation in the fully initialised environment
foreach ( $wgExtensionFunctions as $func ) {
    call_user_func( $func );
}
unset( $func ); // no global pollution; destroy reference
 
// If the session user has a 0 id but a valid name, that means we need to
// autocreate it.
if ( !defined( 'MW_NO_SESSION' ) && !$wgCommandLineMode ) {
    $sessionUser = MediaWiki\Session\SessionManager::getGlobalSession()->getUser();
    if ( $sessionUser->getId() === 0 &&
        MediaWikiServices::getInstance()->getUserNameUtils()->isValid( $sessionUser->getName() )
    ) {
        $res = MediaWikiServices::getInstance()->getAuthManager()->autoCreateUser(
            $sessionUser,
            MediaWiki\Auth\AuthManager::AUTOCREATE_SOURCE_SESSION,
            true
        );
        \MediaWiki\Logger\LoggerFactory::getInstance( 'authevents' )->info( 'Autocreation attempt', [
            'event' => 'autocreate',
            'status' => strval( $res ),
        ] );
        unset( $res );
    }
    unset( $sessionUser );
}
 
if ( !$wgCommandLineMode ) {
    Pingback::schedulePingback();
}
 
$wgFullyInitialised = true;
 
// T264370
if ( !defined( 'MW_NO_SESSION' ) && !$wgCommandLineMode ) {
    MediaWiki\Session\SessionManager::singleton()->logPotentialSessionLeakage();
}