Setup.php

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<?php
use MediaWiki\MediaWikiServices;

if ( !defined( 'MEDIAWIKI' ) ) {
    exit( 1 );
}

$fname = 'Setup.php';
$ps_setup = Profiler::instance()->scopedProfileIn( $fname );

// If any extensions are still queued, force load them
ExtensionRegistry::getInstance()->loadFromQueue();

// Check to see if we are at the file scope
if ( !isset( $wgVersion ) ) {
    echo "Error, Setup.php must be included from the file scope, after DefaultSettings.php\n";
    die( 1 );
}

mb_internal_encoding( 'UTF-8' );

// Set various default paths sensibly...
$ps_default = Profiler::instance()->scopedProfileIn( $fname . '-defaults' );

if ( $wgScript === false ) {
    $wgScript = "$wgScriptPath/index.php";
}
if ( $wgLoadScript === false ) {
    $wgLoadScript = "$wgScriptPath/load.php";
}

if ( $wgArticlePath === false ) {
    if ( $wgUsePathInfo ) {
        $wgArticlePath = "$wgScript/$1";
    } else {
        $wgArticlePath = "$wgScript?title=$1";
    }
}

if ( !empty( $wgActionPaths ) && !isset( $wgActionPaths['view'] ) ) {
    // 'view' is assumed the default action path everywhere in the code
    // but is rarely filled in $wgActionPaths
    $wgActionPaths['view'] = $wgArticlePath;
}

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";
}

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 ( $wgEnableParserCache === false ) {
    $wgParserCacheType = CACHE_NONE;
}

// 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';

$wgNamespaceAliases['Image'] = NS_FILE;
$wgNamespaceAliases['Image_talk'] = NS_FILE_TALK;

$wgLockManagers[] = [
    'name' => 'fsLockManager',
    'class' => 'FSLockManager',
    'lockDirectory' => "{$wgUploadDirectory}/lockdir",
];
$wgLockManagers[] = [
    'name' => 'nullLockManager',
    'class' => 'NullLockManager',
];

if ( !$wgLocalFileRepo ) {
    $wgLocalFileRepo = [
        'class' => 'LocalRepo',
        'name' => 'local',
        'directory' => $wgUploadDirectory,
        'scriptDirUrl' => $wgScriptPath,
        'scriptExtension' => '.php',
        'url' => $wgUploadBaseUrl ? $wgUploadBaseUrl . $wgUploadPath : $wgUploadPath,
        'hashLevels' => $wgHashedUploadDirectory ? 2 : 0,
        'thumbScriptUrl' => $wgThumbnailScriptPath,
        'transformVia404' => !$wgGenerateThumbnailOnParse,
        'deletedDir' => $wgDeletedDirectory,
        'deletedHashLevels' => $wgHashedUploadDirectory ? 3 : 0
    ];
}
if ( $wgUseSharedUploads ) {
    if ( $wgSharedUploadDBname ) {
        $wgForeignFileRepos[] = [
            'class' => 'ForeignDBRepo',
            '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',
            'name' => 'shared',
            'directory' => $wgSharedUploadDirectory,
            'url' => $wgSharedUploadPath,
            'hashLevels' => $wgHashedSharedUploadDirectory ? 2 : 0,
            'thumbScriptUrl' => $wgSharedThumbnailScriptPath,
            'transformVia404' => !$wgGenerateThumbnailOnParse,
            'descBaseUrl' => $wgRepositoryBaseUrl,
            'fetchDescription' => $wgFetchCommonsDescriptions,
        ];
    }
}
if ( $wgUseInstantCommons ) {
    $wgForeignFileRepos[] = [
        'class' => 'ForeignAPIRepo',
        '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' => 86400,
    ];
}
/*
 * Add on default file backend config for file repos.
 * FileBackendGroup will handle initializing the backends.
 */
if ( !isset( $wgLocalFileRepo['backend'] ) ) {
    $wgLocalFileRepo['backend'] = $wgLocalFileRepo['name'] . '-backend';
}
foreach ( $wgForeignFileRepos as &$repo ) {
    if ( !isset( $repo['directory'] ) && $repo['class'] === 'ForeignAPIRepo' ) {
        $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 );
if ( $wgRCFilterByAge ) {
    // Trim down $wgRCLinkDays so that it only lists links which are valid
    // as determined by $wgRCMaxAge.
    // Note that we allow 1 link higher than the max for things like 56 days but a 60 day link.
    sort( $wgRCLinkDays );

    // @codingStandardsIgnoreStart Generic.CodeAnalysis.ForLoopWithTestFunctionCall.NotAllowed
    for ( $i = 0; $i < count( $wgRCLinkDays ); $i++ ) {
        // @codingStandardsIgnoreEnd
        if ( $wgRCLinkDays[$i] >= $rcMaxAgeDays ) {
            $wgRCLinkDays = array_slice( $wgRCLinkDays, 0, $i + 1, false );
            break;
        }
    }
}
// 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 ( $wgSkipSkin ) {
    $wgSkipSkins[] = $wgSkipSkin;
}

$wgSkipSkins[] = 'fallback';
$wgSkipSkins[] = 'apioutput';

if ( $wgLocalInterwiki ) {
    array_unshift( $wgLocalInterwikis, $wgLocalInterwiki );
}

// Set default shared prefix
if ( $wgSharedPrefix === false ) {
    $wgSharedPrefix = $wgDBprefix;
}

// Set default shared schema
if ( $wgSharedSchema === false ) {
    $wgSharedSchema = $wgDBmwschema;
}

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. - bug 63678
    $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 ( $wgMetaNamespace === false ) {
    $wgMetaNamespace = str_replace( ' ', '_', $wgSitename );
}

// Default value is 2000 or the suhosin limit if it is between 1 and 2000
if ( $wgResourceLoaderMaxQueryLength === false ) {
    $suhosinMaxValueLength = (int)ini_get( 'suhosin.get.max_value_length' );
    if ( $suhosinMaxValueLength > 0 && $suhosinMaxValueLength < 2000 ) {
        $wgResourceLoaderMaxQueryLength = $suhosinMaxValueLength;
    } else {
        $wgResourceLoaderMaxQueryLength = 2000;
    }
    unset( $suhosinMaxValueLength );
}

// Ensure the minimum chunk size is less than PHP upload limits or the maximum
// upload size.
$wgMinUploadChunkSize = min(
    $wgMinUploadChunkSize,
    UploadBase::getMaxUploadSize( 'file' ),
    UploadBase::getMaxPhpUploadSize(),
    ( wfShorthandToInteger(
        ini_get( 'post_max_size' ) ?: ini_get( 'hhvm.server.max_post_size' ),
        PHP_INT_MAX
    ) ?: PHP_INT_MAX ) - 1024 // Leave some room for other POST parameters
);

$wgCanonicalNamespaceNames = [
    NS_MEDIA            => 'Media',
    NS_SPECIAL          => 'Special',
    NS_TALK             => 'Talk',
    NS_USER             => 'User',
    NS_USER_TALK        => 'User_talk',
    NS_PROJECT          => 'Project',
    NS_PROJECT_TALK     => 'Project_talk',
    NS_FILE             => 'File',
    NS_FILE_TALK        => 'File_talk',
    NS_MEDIAWIKI        => 'MediaWiki',
    NS_MEDIAWIKI_TALK   => 'MediaWiki_talk',
    NS_TEMPLATE         => 'Template',
    NS_TEMPLATE_TALK    => 'Template_talk',
    NS_HELP             => 'Help',
    NS_HELP_TALK        => 'Help_talk',
    NS_CATEGORY         => 'Category',
    NS_CATEGORY_TALK    => 'Category_talk',
];

if ( is_array( $wgExtraNamespaces ) ) {
    $wgCanonicalNamespaceNames = $wgCanonicalNamespaceNames + $wgExtraNamespaces;
}

// These are now the same, always
// To determine the user language, use $wgLang->getCode()
$wgContLanguageCode = $wgLanguageCode;

// Easy to forget to falsify $wgDebugToolbar for static caches.
// If file cache or CDN cache is on, just disable this (DWIMD).
if ( $wgUseFileCache || $wgUseSquid ) {
    $wgDebugToolbar = false;
}

// We always output HTML5 since 1.22, overriding these is no longer supported
// we set them here for extensions that depend on its value.
$wgHtml5 = true;
$wgXhtmlDefaultNamespace = 'http://www.w3.org/1999/xhtml';
$wgJsMimeType = 'text/javascript';

// Blacklisted file extensions shouldn't appear on the "allowed" list
$wgFileExtensions = array_values( array_diff( $wgFileExtensions, $wgFileBlacklist ) );

if ( $wgInvalidateCacheOnLocalSettingsChange ) {
    MediaWiki\suppressWarnings();
    $wgCacheEpoch = max( $wgCacheEpoch, gmdate( 'YmdHis', filemtime( "$IP/LocalSettings.php" ) ) );
    MediaWiki\restoreWarnings();
}

if ( $wgNewUserLog ) {
    // Add a new log type
    $wgLogTypes[] = 'newusers';
    $wgLogNames['newusers'] = 'newuserlogpage';
    $wgLogHeaders['newusers'] = 'newuserlogpagetext';
    $wgLogActionsHandlers['newusers/newusers'] = 'NewUsersLogFormatter';
    $wgLogActionsHandlers['newusers/create'] = 'NewUsersLogFormatter';
    $wgLogActionsHandlers['newusers/create2'] = 'NewUsersLogFormatter';
    $wgLogActionsHandlers['newusers/byemail'] = 'NewUsersLogFormatter';
    $wgLogActionsHandlers['newusers/autocreate'] = 'NewUsersLogFormatter';
}

if ( $wgPageLanguageUseDB ) {
    $wgLogTypes[] = 'pagelang';
    $wgLogActionsHandlers['pagelang/pagelang'] = 'PageLangLogFormatter';
}

if ( $wgCookieSecure === 'detect' ) {
    $wgCookieSecure = ( WebRequest::detectProtocol() === 'https' );
}

if ( $wgProfileOnly ) {
    $wgDebugLogGroups['profileoutput'] = $wgDebugLogFile;
    $wgDebugLogFile = '';
}

// Backwards compatibility with old password limits
if ( $wgMinimalPasswordLength !== false ) {
    $wgPasswordPolicy['policies']['default']['MinimalPasswordLength'] = $wgMinimalPasswordLength;
}

if ( $wgMaximalPasswordLength !== false ) {
    $wgPasswordPolicy['policies']['default']['MaximalPasswordLength'] = $wgMaximalPasswordLength;
}

// Backwards compatibility warning
if ( !$wgSessionsInObjectCache && !$wgSessionsInMemcached ) {
    wfDeprecated( '$wgSessionsInObjectCache = false', '1.27' );
    if ( $wgSessionHandler ) {
        wfDeprecated( '$wgSessionsHandler', '1.27' );
    }
    $cacheType = get_class( ObjectCache::getInstance( $wgSessionCacheType ) );
    wfDebugLog(
        'caches',
        "Session data will be stored in \"$cacheType\" cache with " .
            "expiry $wgObjectCacheSessionExpiry seconds"
    );
}
$wgSessionsInObjectCache = true;

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';
}

Profiler::instance()->scopedProfileOut( $ps_default );

// Disable MWDebug for command line mode, this prevents MWDebug from eating up
// all the memory from logging SQL queries on maintenance scripts
global $wgCommandLineMode;
if ( $wgDebugToolbar && !$wgCommandLineMode ) {
    MWDebug::init();
}

if ( !class_exists( 'AutoLoader' ) ) {
    require_once "$IP/includes/AutoLoader.php";
}

// Reset the global service locator, so any services that have already been created will be
// re-created while taking into account any custom settings and extensions.
MediaWikiServices::resetGlobalInstance( new GlobalVarConfig(), 'quick' );

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
            ]
        )
    );
}

// Define a constant that indicates that the bootstrapping of the service locator
// is complete.
define( 'MW_SERVICE_BOOTSTRAP_COMPLETE', 1 );

// Install a header callback to prevent caching of responses with cookies (T127993)
if ( !$wgCommandLineMode ) {
    header_register_callback( function () {
        $headers = [];
        foreach ( headers_list() as $header ) {
            list( $name, $value ) = explode( ':', $header, 2 );
            $headers[strtolower( trim( $name ) )][] = trim( $value );
        }

        if ( isset( $headers['set-cookie'] ) ) {
            $cacheControl = isset( $headers['cache-control'] )
                ? implode( ', ', $headers['cache-control'] )
                : '';

            if ( !preg_match( '/(?:^|,)\s*(?:private|no-cache|no-store)\s*(?:$|,)/i', $cacheControl ) ) {
                header( 'Expires: Thu, 01 Jan 1970 00:00:00 GMT' );
                header( 'Cache-Control: private, max-age=0, s-maxage=0' );
                MediaWiki\Logger\LoggerFactory::getInstance( 'cache-cookies' )->warning(
                    'Cookies set on {url} with Cache-Control "{cache-control}"', [
                        'url' => WebRequest::getGlobalRequestURL(),
                        'cookies' => $headers['set-cookie'],
                        'cache-control' => $cacheControl ?: '<not set>',
                    ]
                );
            }
        }
    } );
}

MWExceptionHandler::installHandler();

require_once "$IP/includes/compat/normal/UtfNormalUtil.php";

$ps_validation = Profiler::instance()->scopedProfileIn( $fname . '-validation' );

// T48998: Bail out early if $wgArticlePath is non-absolute
foreach ( [ 'wgArticlePath', 'wgVariantArticlePath' ] as $varName ) {
    if ( $$varName && !preg_match( '/^(https?:\/\/|\/)/', $$varName ) ) {
        throw new FatalError(
            "If you use a relative URL for \$$varName, it must start " .
            'with a slash (<code>/</code>).<br><br>See ' .
            "<a href=\"https://www.mediawiki.org/wiki/Manual:\$$varName\">" .
            "https://www.mediawiki.org/wiki/Manual:\$$varName</a>."
        );
    }
}

Profiler::instance()->scopedProfileOut( $ps_validation );

$ps_default2 = Profiler::instance()->scopedProfileIn( $fname . '-defaults2' );

if ( $wgCanonicalServer === false ) {
    $wgCanonicalServer = wfExpandUrl( $wgServer, PROTO_HTTP );
}

// Set server name
$serverParts = wfParseUrl( $wgCanonicalServer );
if ( $wgServerName !== false ) {
    wfWarn( '$wgServerName should be derived from $wgCanonicalServer, '
        . 'not customized. Overwriting $wgServerName.' );
}
$wgServerName = $serverParts['host'];
unset( $serverParts );

// Set defaults for configuration variables
// that are derived from the server name by default
// Note: $wgEmergencyContact and $wgPasswordSender may be false or empty string (T104142)
if ( !$wgEmergencyContact ) {
    $wgEmergencyContact = 'wikiadmin@' . $wgServerName;
}
if ( !$wgPasswordSender ) {
    $wgPasswordSender = 'apache@' . $wgServerName;
}
if ( !$wgNoReplyAddress ) {
    $wgNoReplyAddress = $wgPasswordSender;
}

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.' );
}

$wgVirtualRestConfig['global']['domain'] = $wgCanonicalServer;

// Now that GlobalFunctions is loaded, set defaults that depend on it.
if ( $wgTmpDirectory === false ) {
    $wgTmpDirectory = wfTempDir();
}

// We don't use counters anymore. Left here for extensions still
// expecting this to exist. Should be removed sometime 1.26 or later.
if ( !isset( $wgDisableCounters ) ) {
    $wgDisableCounters = true;
}

if ( $wgMainWANCache === false ) {
    // Setup a WAN cache from $wgMainCacheType with no relayer.
    // Sites using multiple datacenters can configure a relayer.
    $wgMainWANCache = 'mediawiki-main-default';
    $wgWANObjectCaches[$wgMainWANCache] = [
        'class'    => 'WANObjectCache',
        'cacheId'  => $wgMainCacheType,
        'channels' => [ 'purge' => 'wancache-main-default-purge' ]
    ];
}

Profiler::instance()->scopedProfileOut( $ps_default2 );

$ps_misc = Profiler::instance()->scopedProfileIn( $fname . '-misc1' );

// Raise the memory limit if it's too low
wfMemoryLimit();

if ( is_null( $wgLocaltimezone ) ) {
    MediaWiki\suppressWarnings();
    $wgLocaltimezone = date_default_timezone_get();
    MediaWiki\restoreWarnings();
}

date_default_timezone_set( $wgLocaltimezone );
if ( is_null( $wgLocalTZoffset ) ) {
    $wgLocalTZoffset = 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;
}

// initialize the request object in $wgRequest
$wgRequest = RequestContext::getMain()->getRequest(); // BackCompat
// Set user IP/agent information for causal consistency purposes
MediaWikiServices::getInstance()->getDBLoadBalancerFactory()->setRequestInfo( [
    'IPAddress' => $wgRequest->getIP(),
    'UserAgent' => $wgRequest->getHeader( 'User-Agent' ),
    'ChronologyProtection' => $wgRequest->getHeader( 'ChronologyProtection' )
] );

// Useful debug output
if ( $wgCommandLineMode ) {
    wfDebug( "\n\nStart command line script $self\n" );
} else {
    $debug = "\n\nStart request {$wgRequest->getMethod()} {$wgRequest->getRequestURL()}\n";

    if ( $wgDebugPrintHttpHeaders ) {
        $debug .= "HTTP HEADERS:\n";

        foreach ( $wgRequest->getAllHeaders() as $name => $value ) {
            $debug .= "$name: $value\n";
        }
    }
    wfDebug( $debug );
}

Profiler::instance()->scopedProfileOut( $ps_misc );
$ps_memcached = Profiler::instance()->scopedProfileIn( $fname . '-memcached' );

$wgMemc = wfGetMainCache();
$messageMemc = wfGetMessageCacheStorage();
$parserMemc = wfGetParserCacheStorage();

wfDebugLog( 'caches',
    'cluster: ' . get_class( $wgMemc ) .
    ', WAN: ' . ( $wgMainWANCache === CACHE_NONE ? 'CACHE_NONE' : $wgMainWANCache ) .
    ', stash: ' . $wgMainStash .
    ', message: ' . get_class( $messageMemc ) .
    ', parser: ' . get_class( $parserMemc ) .
    ', session: ' . get_class( ObjectCache::getInstance( $wgSessionCacheType ) )
);

Profiler::instance()->scopedProfileOut( $ps_memcached );

// Most of the config is out, some might want to run hooks here.
Hooks::run( 'SetupAfterCache' );

$ps_globals = Profiler::instance()->scopedProfileIn( $fname . '-globals' );

$wgContLang = Language::factory( $wgLanguageCode );
$wgContLang->initContLang();

// Now that variant lists may be available...
$wgRequest->interpolateTitle();

if ( !is_object( $wgAuth ) ) {
    $wgAuth = new MediaWiki\Auth\AuthManagerAuthPlugin;
    Hooks::run( 'AuthPluginSetup', [ &$wgAuth ] );
}
if ( $wgAuth && !$wgAuth instanceof MediaWiki\Auth\AuthManagerAuthPlugin ) {
    MediaWiki\Auth\AuthManager::singleton()->forcePrimaryAuthenticationProviders( [
        new MediaWiki\Auth\TemporaryPasswordPrimaryAuthenticationProvider( [
            'authoritative' => false,
        ] ),
        new MediaWiki\Auth\AuthPluginPrimaryAuthenticationProvider( $wgAuth ),
        new MediaWiki\Auth\LocalPasswordPrimaryAuthenticationProvider( [
            'authoritative' => true,
        ] ),
    ], '$wgAuth is ' . get_class( $wgAuth ) );
}

// Set up the session
$ps_session = Profiler::instance()->scopedProfileIn( $fname . '-session' );
$wgInitialSessionId = null;
if ( !defined( 'MW_NO_SESSION' ) && !$wgCommandLineMode ) {
    // If session.auto_start is there, we can't touch session name
    if ( $wgPHPSessionHandling !== 'disable' && !wfIniGetBool( 'session.auto_start' ) ) {
        session_name( $wgSessionName ? $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()
        );
    }

    // Initialize the session
    try {
        $session = MediaWiki\Session\SessionManager::getGlobalSession();
    } catch ( OverflowException $ex ) {
        if ( isset( $ex->sessionInfos ) && count( $ex->sessionInfos ) >= 2 ) {
            // The exception is because the request had multiple possible
            // sessions tied for top priority. Report this to the user.
            $list = [];
            foreach ( $ex->sessionInfos as $info ) {
                $list[] = $info->getProvider()->describe( $wgContLang );
            }
            $list = $wgContLang->listToText( $list );
            throw new HttpError( 400,
                Message::newFromKey( 'sessionmanager-tie', $list )->inLanguage( $wgContLang )->plain()
            );
        }

        // Not the one we want, rethrow
        throw $ex;
    }

    if ( $session->isPersistent() ) {
        $wgInitialSessionId = $session->getSessionId();
    }

    $session->renew();
    if ( MediaWiki\Session\PHPSessionHandler::isEnabled() &&
        ( $session->isPersistent() || $session->shouldRememberUser() )
    ) {
        // Start the PHP-session for backwards compatibility
        session_id( $session->getId() );
        MediaWiki\quietCall( '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()
        );
    }
}
Profiler::instance()->scopedProfileOut( $ps_session );

$wgUser = RequestContext::getMain()->getUser(); // BackCompat

$wgLang = new StubUserLang;

$wgOut = RequestContext::getMain()->getOutput(); // BackCompat

$wgParser = new StubObject( 'wgParser', $wgParserConf['class'], [ $wgParserConf ] );

$wgTitle = null;

Profiler::instance()->scopedProfileOut( $ps_globals );
$ps_extensions = Profiler::instance()->scopedProfileIn( $fname . '-extensions' );

// 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 ) {
    // Allow closures in PHP 5.3+
    if ( is_object( $func ) && $func instanceof Closure ) {
        $profName = $fname . '-extensions-closure';
    } elseif ( is_array( $func ) ) {
        if ( is_object( $func[0] ) ) {
            $profName = $fname . '-extensions-' . get_class( $func[0] ) . '::' . $func[1];
        } else {
            $profName = $fname . '-extensions-' . implode( '::', $func );
        }
    } else {
        $profName = $fname . '-extensions-' . strval( $func );
    }

    $ps_ext_func = Profiler::instance()->scopedProfileIn( $profName );
    call_user_func( $func );
    Profiler::instance()->scopedProfileOut( $ps_ext_func );
}

// 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 && User::isValidUserName( $sessionUser->getName() ) ) {
        $ps_autocreate = Profiler::instance()->scopedProfileIn( $fname . '-autocreate' );
        $res = MediaWiki\Auth\AuthManager::singleton()->autoCreateUser(
            $sessionUser,
            MediaWiki\Auth\AuthManager::AUTOCREATE_SOURCE_SESSION,
            true
        );
        Profiler::instance()->scopedProfileOut( $ps_autocreate );
        \MediaWiki\Logger\LoggerFactory::getInstance( 'authevents' )->info( 'Autocreation attempt', [
            'event' => 'autocreate',
            'status' => $res,
        ] );
        unset( $res );
    }
    unset( $sessionUser );
}

if ( !$wgCommandLineMode ) {
    Pingback::schedulePingback();
}

wfDebug( "Fully initialised\n" );
$wgFullyInitialised = true;

Profiler::instance()->scopedProfileOut( $ps_extensions );
Profiler::instance()->scopedProfileOut( $ps_setup );