This serves as the entry point to the MediaWiki session handling system. More...

Inheritance diagram for MediaWiki\Session\SessionManager:

Collaboration diagram for MediaWiki\Session\SessionManager:

[legend]

Public Member Functions
	__construct ( $options=[])

	getEmptySession (WebRequest $request=null)
	Create a new, empty session. More...

	getSessionById ( $id, $create=false, WebRequest $request=null)
	Fetch a session by ID. More...

	getSessionForRequest (WebRequest $request)
	Fetch the session for a request (or a new empty session if none is attached to it) More...

	getVaryCookies ()
	Return the list of cookies that need varying on. More...

	getVaryHeaders ()
	Return the HTTP headers that need varying on. More...

	invalidateSessionsForUser (User $user)
	Invalidate sessions for a user. More...

	setHookContainer (HookContainer $hookContainer)

	setLogger (LoggerInterface $logger)

Static Public Member Functions
static	getGlobalSession ()
	If PHP's session_id() has been set, returns that session. More...

static	singleton ()
	Get the global SessionManager. More...

static	validateSessionId ( $id)
	Validate a session ID. More...

Private Member Functions
	getEmptySessionInternal (WebRequest $request=null, $id=null)

Private Attributes
SessionBackend[]	$allSessionBackends = []

SessionId[]	$allSessionIds = []

Config	$config

HookContainer	$hookContainer

HookRunner	$hookRunner

LoggerInterface	$logger

true[]	$preventUsers = []

SessionProvider[]	$sessionProviders = null

CachedBagOStuff null	$store

UserNameUtils	$userNameUtils

string[]	$varyCookies = null

array	$varyHeaders = null

Static Private Attributes
static Session null	$globalSession = null

static WebRequest null	$globalSessionRequest = null

static SessionManager null	$instance = null

Internal methods
static	resetCache ()
	Reset the internal caching for unit testing. More...

	preventSessionsForUser ( $username)
	Prevent future sessions for the user. More...

	isUserSessionPrevented ( $username)
	Test if a user is prevented. More...

	getProvider ( $name)
	Get a session provider by name. More...

	shutdown ()
	Save all active sessions on shutdown. More...

	getSessionFromInfo (SessionInfo $info, WebRequest $request)
	Create a Session corresponding to the passed SessionInfo. More...

	deregisterSessionBackend (SessionBackend $backend)
	Deregister a SessionBackend. More...

	changeBackendId (SessionBackend $backend)
	Change a SessionBackend's ID. More...

	generateSessionId ()
	Generate a new random session ID. More...

	setupPHPSessionHandler (PHPSessionHandler $handler)
	Call setters on a PHPSessionHandler. More...

	logPotentialSessionLeakage (Session $session=null)
	If the same session is suddenly used from a different IP, that's potentially due to a session leak, so log it. More...

	getSessionInfoForRequest (WebRequest $request)
	Fetch the SessionInfo(s) for a request. More...

	loadSessionInfoFromStore (SessionInfo &$info, WebRequest $request)
	Load and verify the session info against the store. More...

	logUnpersist (SessionInfo $info, WebRequest $request)
	Reset the internal caching for unit testing. More...

	getProviders ()
	Get the available SessionProviders. More...

Detailed Description

This serves as the entry point to the MediaWiki session handling system.

Most methods here are for internal use by session handling code. Other callers should only use getGlobalSession and the methods of SessionManagerInterface; the rest of the functionality is exposed via MediaWiki\Session\Session methods.

To provide custom session handling, implement a MediaWiki\Session\SessionProvider.

Storage expectations

The SessionManager should be configured with a very fast storage system that is optimized for holding key-value pairs. It expects:

Low latencies. Session data is read or written to during nearly all web requests from people that have contributed to or otherwise engaged with the site, including those not logged in with a registered account.
Locally writable data. The data must be writable from both primary and secondary data centres.
Locally latest reads. Writes must by default be immediately consistent within the local data centre, and visible to other reads from web servers in that data centre.
Replication. The data must be eventually consistent across all data centres. Writes are either synced to all remote data centres, or locally overwritten by another write that is.
Support BagOStuff::WRITE_SYNC flag. The data must writable with synchronous replication waited for, across all data centres. This is used when resetting or deleting a session, which must not be lost or overwritten by earlier or overlapping write actions.

The SessionManager uses set() and delete() for write operations, which should by default be synchronous in the local data centre, and replicate asynchronously to any others. This behaviour can be overridden by the use of the WRITE_SYNC flag.

Since: 1.27

See also: https://www.mediawiki.org/wiki/Manual:SessionManager_and_AuthManager

Definition at line 83 of file SessionManager.php.

Constructor & Destructor Documentation

◆ __construct()

MediaWiki\Session\SessionManager::__construct ( $options = [] )

Parameters

array

$options

config: Config to fetch configuration from. Defaults to the default 'main' config.
logger: LoggerInterface to use for logging. Defaults to the 'session' channel.
store: BagOStuff to store session data in.

Definition at line 187 of file SessionManager.php.

References MediaWiki\Logger\LoggerFactory\getInstance(), ObjectCache\getInstance(), MediaWiki\MediaWikiServices\getInstance(), and MediaWiki\MainConfigNames\SessionCacheType.

Member Function Documentation

◆ changeBackendId()

MediaWiki\Session\SessionManager::changeBackendId ( SessionBackend $backend )

Change a SessionBackend's ID.

Access: internal: For use from \MediaWiki\Session\SessionBackend only

Parameters

SessionBackend $backend

Definition at line 956 of file SessionManager.php.

References MediaWiki\Session\SessionBackend\getSessionId().

◆ deregisterSessionBackend()

MediaWiki\Session\SessionManager::deregisterSessionBackend ( SessionBackend $backend )

Deregister a SessionBackend.

Access: internal: For use from \MediaWiki\Session\SessionBackend only

Parameters

SessionBackend $backend

Definition at line 938 of file SessionManager.php.

References MediaWiki\Session\SessionBackend\getId(), and MediaWiki\Session\SessionBackend\getSessionId().

◆ generateSessionId()

MediaWiki\Session\SessionManager::generateSessionId ( )

Generate a new random session ID.

Returns: string

Definition at line 978 of file SessionManager.php.

References MWCryptRand\generateHex().

◆ getEmptySession()

MediaWiki\Session\SessionManager::getEmptySession ( WebRequest $request = null )

Create a new, empty session.

The first provider configured that is able to provide an empty session will be used.

Parameters

WebRequest | null $request Corresponding request. Any existing session associated with this WebRequest object will be overwritten.

Returns: Session

Implements MediaWiki\Session\SessionManagerInterface.

Definition at line 300 of file SessionManager.php.

◆ getEmptySessionInternal()

MediaWiki\Session\SessionManager::getEmptySessionInternal	(	WebRequest	$request = `null`,
			$id = `null`
	)

private

See also: SessionManagerInterface::getEmptySession

Parameters

WebRequest \| null	$request
string \| null	$id	ID to force on the new session

Returns: Session

Definition at line 310 of file SessionManager.php.

References MediaWiki\Session\SessionInfo\compare().

◆ getGlobalSession()

static MediaWiki\Session\SessionManager::getGlobalSession ( )

static

If PHP's session_id() has been set, returns that session.

Otherwise returns the session for RequestContext::getMain()->getRequest().

Returns: Session

Definition at line 146 of file SessionManager.php.

Referenced by MediaWiki\Auth\RememberMeAuthenticationRequest\__construct(), MediaWiki\Session\SessionBackend\checkPHPSession(), ApiLogin\execute(), ApiLogout\execute(), RequestContext\exportSession(), SpecialUserLogout\onSubmit(), RawAction\onView(), ApiEditPage\persistGlobalSession(), McrUndoAction\show(), and SubmitAction\show().

◆ getProvider()

MediaWiki\Session\SessionManager::getProvider ( $name )

Get a session provider by name.

Generally, this will only be used by internal implementation of some special session-providing mechanism. General purpose code, if it needs to access a SessionProvider at all, will use Session::getProvider().

Parameters

string $name

Returns: SessionProvider|null

Definition at line 495 of file SessionManager.php.

◆ getProviders()

MediaWiki\Session\SessionManager::getProviders ( )

protected

Get the available SessionProviders.

Returns: SessionProvider[]

Definition at line 461 of file SessionManager.php.

References MediaWiki\MediaWikiServices\getInstance(), MediaWiki\Session\SessionProvider\init(), and MediaWiki\MainConfigNames\SessionProviders.

◆ getSessionById()

MediaWiki\Session\SessionManager::getSessionById	(		$id,
			$create = `false`,
		WebRequest	$request = `null`
	)

Fetch a session by ID.

Parameters

string	$id
bool	$create	If no session exists for $id, try to create a new one. May still return null if a session for $id exists but cannot be loaded.
WebRequest \| null	$request	Corresponding request. Any existing session associated with this WebRequest object will be overwritten.

Returns: Session|null

Implements MediaWiki\Session\SessionManagerInterface.

Definition at line 258 of file SessionManager.php.

References MediaWiki\Session\SessionInfo\MIN_PRIORITY.

◆ getSessionForRequest()

MediaWiki\Session\SessionManager::getSessionForRequest ( WebRequest $request )

Fetch the session for a request (or a new empty session if none is attached to it)

Note: You probably want to use $request->getSession() instead. It's more efficient and doesn't break FauxRequests or sessions that were changed by $this->getSessionById() or $this->getEmptySession().

Parameters

WebRequest $request Any existing associated session will be reset to the session corresponding to the data in the request itself.

Returns: Session

Exceptions

Implements MediaWiki\Session\SessionManagerInterface.

Definition at line 247 of file SessionManager.php.

◆ getSessionFromInfo()

MediaWiki\Session\SessionManager::getSessionFromInfo	(	SessionInfo	$info,
		WebRequest	$request
	)

Create a Session corresponding to the passed SessionInfo.

Access: internal: For use by a SessionProvider that needs to specially create its own Session. Most session providers won't need this.

Parameters

SessionInfo	$info
WebRequest	$request

Returns: Session

Definition at line 879 of file SessionManager.php.

References MediaWiki\Session\SessionInfo\getId(), MediaWiki\Session\SessionInfo\isIdSafe(), MW_ENTRY_POINT, MW_NO_SESSION, MediaWiki\MainConfigNames\ObjectCacheSessionExpiry, WebRequest\setSessionId(), MediaWiki\Session\SessionInfo\wasPersisted(), and MediaWiki\Session\SessionInfo\wasRemembered().

◆ getSessionInfoForRequest()

MediaWiki\Session\SessionManager::getSessionInfoForRequest ( WebRequest $request )

private

Fetch the SessionInfo(s) for a request.

Parameters

WebRequest $request

Returns: SessionInfo|null

Definition at line 523 of file SessionManager.php.

References MediaWiki\Session\SessionInfo\compare().

◆ getVaryCookies()

MediaWiki\Session\SessionManager::getVaryCookies ( )

Return the list of cookies that need varying on.

Returns: string[]

Implements MediaWiki\Session\SessionManagerInterface.

Definition at line 400 of file SessionManager.php.

References MW_NO_SESSION.

◆ getVaryHeaders()

MediaWiki\Session\SessionManager::getVaryHeaders ( )

Return the HTTP headers that need varying on.

The return value is such that someone could theoretically do this:

foreach ( $provider->getVaryHeaders() as $header => $options ) {
  $outputPage->addVaryHeader( $header, $options );
}

Note that the $options argument to OutputPage::addVaryHeader() has been deprecated and should always be null.

Returns: array

Implements MediaWiki\Session\SessionManagerInterface.

Definition at line 380 of file SessionManager.php.

References $header, and MW_NO_SESSION.

◆ invalidateSessionsForUser()

MediaWiki\Session\SessionManager::invalidateSessionsForUser ( User $user )

Invalidate sessions for a user.

After calling this, existing sessions should be invalid. For mutable session providers, this generally means the user has to log in again; for immutable providers, it generally means the loss of session data.

Parameters

User $user

Implements MediaWiki\Session\SessionManagerInterface.

Definition at line 371 of file SessionManager.php.

References User\saveSettings(), and User\setToken().

◆ isUserSessionPrevented()

MediaWiki\Session\SessionManager::isUserSessionPrevented ( $username )

Test if a user is prevented.

Access: internal: For use from SessionBackend only

Parameters

string $username

Returns: bool

Definition at line 453 of file SessionManager.php.

◆ loadSessionInfoFromStore()

MediaWiki\Session\SessionManager::loadSessionInfoFromStore	(	SessionInfo &	$info,
		WebRequest	$request
	)

private

Load and verify the session info against the store.

Parameters

SessionInfo	&$info	Will likely be replaced with an updated SessionInfo instance
WebRequest	$request

Returns: bool Whether the session info matches the stored data (if any)

Definition at line 589 of file SessionManager.php.

◆ logPotentialSessionLeakage()

MediaWiki\Session\SessionManager::logPotentialSessionLeakage ( Session $session = null )

If the same session is suddenly used from a different IP, that's potentially due to a session leak, so log it.

In the vast majority of cases it is a false positive due to a user switching connections, but we are interested in an audit track where we can look up a specific username, so a noisy log is fine. Also log changes to the mwuser cookie, an analytics cookie set by mediawiki.user.js which should be a little less noisy.

Access: private: For use in Setup.php only

Parameters

Session | null $session For testing only

Definition at line 1038 of file SessionManager.php.

References MediaWiki\Logger\LoggerFactory\getInstance(), MediaWiki\MediaWikiServices\getInstance(), and MediaWiki\MainConfigNames\SuspiciousIpExpiry.

◆ logUnpersist()

MediaWiki\Session\SessionManager::logUnpersist	(	SessionInfo	$info,
		WebRequest	$request
	)

private

Reset the internal caching for unit testing.

Note: Unit tests only

Access: internal

Definition at line 1011 of file SessionManager.php.

References WebRequest\getHeader(), MediaWiki\Session\SessionInfo\getId(), WebRequest\getIP(), MediaWiki\Session\SessionInfo\getProvider(), and MediaWiki\Session\SessionInfo\getUserInfo().

◆ preventSessionsForUser()

MediaWiki\Session\SessionManager::preventSessionsForUser ( $username )

Prevent future sessions for the user.

The intention is that the named account will never again be usable for normal login (i.e. there is no way to undo the prevention of access).

Access: internal: For use from \User::newSystemUser only

Parameters

string $username

Definition at line 438 of file SessionManager.php.

◆ resetCache()

static MediaWiki\Session\SessionManager::resetCache ( )

static

Reset the internal caching for unit testing.

Note: Unit tests only

Access: internal

Definition at line 1000 of file SessionManager.php.

◆ setHookContainer()

MediaWiki\Session\SessionManager::setHookContainer ( HookContainer $hookContainer )

Access: internal

Parameters

HookContainer $hookContainer

Definition at line 242 of file SessionManager.php.

◆ setLogger()

MediaWiki\Session\SessionManager::setLogger ( LoggerInterface $logger )

Definition at line 234 of file SessionManager.php.

◆ setupPHPSessionHandler()

MediaWiki\Session\SessionManager::setupPHPSessionHandler ( PHPSessionHandler $handler )

Call setters on a PHPSessionHandler.

Access: internal: Use PhpSessionHandler::install()

Parameters

PHPSessionHandler $handler

Definition at line 991 of file SessionManager.php.

References MediaWiki\Session\PHPSessionHandler\setManager().

◆ shutdown()

MediaWiki\Session\SessionManager::shutdown ( )

Save all active sessions on shutdown.

Access: internal: For internal use with register_shutdown_function()

Definition at line 504 of file SessionManager.php.

◆ singleton()

static MediaWiki\Session\SessionManager::singleton ( )

static

Get the global SessionManager.

Returns: self

Definition at line 133 of file SessionManager.php.

References MediaWiki\Session\SessionManager\$instance.

Referenced by RequestContext\importScopedSession().

◆ validateSessionId()

static MediaWiki\Session\SessionManager::validateSessionId ( $id )

static

Validate a session ID.

Parameters

string $id

Returns: bool

Definition at line 421 of file SessionManager.php.

Referenced by MediaWiki\Session\SessionInfo\__construct(), MediaWiki\Session\ImmutableSessionProviderWithCookie\getSessionIdFromCookie(), and MediaWiki\Session\CookieSessionProvider\provideSessionInfo().

Member Data Documentation

◆ $allSessionBackends

SessionBackend [] MediaWiki\Session\SessionManager::$allSessionBackends = []

private

Definition at line 121 of file SessionManager.php.

◆ $allSessionIds

SessionId [] MediaWiki\Session\SessionManager::$allSessionIds = []

private

Definition at line 124 of file SessionManager.php.

◆ $config

Config MediaWiki\Session\SessionManager::$config

private

Definition at line 103 of file SessionManager.php.

◆ $globalSession

Session null MediaWiki\Session\SessionManager::$globalSession = null

staticprivate

Definition at line 88 of file SessionManager.php.

◆ $globalSessionRequest

WebRequest null MediaWiki\Session\SessionManager::$globalSessionRequest = null

staticprivate

Definition at line 91 of file SessionManager.php.

◆ $hookContainer

HookContainer MediaWiki\Session\SessionManager::$hookContainer

private

Definition at line 97 of file SessionManager.php.

◆ $hookRunner

HookRunner MediaWiki\Session\SessionManager::$hookRunner

private

Definition at line 100 of file SessionManager.php.

◆ $instance

SessionManager null MediaWiki\Session\SessionManager::$instance = null

staticprivate

Definition at line 85 of file SessionManager.php.

Referenced by MediaWiki\Session\SessionManager\singleton().

◆ $logger

LoggerInterface MediaWiki\Session\SessionManager::$logger

private

Definition at line 94 of file SessionManager.php.

◆ $preventUsers

true [] MediaWiki\Session\SessionManager::$preventUsers = []

private

Definition at line 127 of file SessionManager.php.

◆ $sessionProviders

SessionProvider [] MediaWiki\Session\SessionManager::$sessionProviders = null

private

Definition at line 112 of file SessionManager.php.

◆ $store

CachedBagOStuff null MediaWiki\Session\SessionManager::$store

private

Definition at line 109 of file SessionManager.php.

◆ $userNameUtils

UserNameUtils MediaWiki\Session\SessionManager::$userNameUtils

private

Definition at line 106 of file SessionManager.php.

◆ $varyCookies

string [] MediaWiki\Session\SessionManager::$varyCookies = null

private

Definition at line 115 of file SessionManager.php.

◆ $varyHeaders

array MediaWiki\Session\SessionManager::$varyHeaders = null

private

Definition at line 118 of file SessionManager.php.

The documentation for this class was generated from the following file:

includes/session/SessionManager.php

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Internal methods

Detailed Description

Storage expectations

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ changeBackendId()

◆ deregisterSessionBackend()

◆ generateSessionId()

◆ getEmptySession()

◆ getEmptySessionInternal()

◆ getGlobalSession()

◆ getProvider()

◆ getProviders()

◆ getSessionById()

◆ getSessionForRequest()

◆ getSessionFromInfo()

◆ getSessionInfoForRequest()

◆ getVaryCookies()

◆ getVaryHeaders()

◆ invalidateSessionsForUser()

◆ isUserSessionPrevented()

◆ loadSessionInfoFromStore()

◆ logPotentialSessionLeakage()

◆ logUnpersist()

◆ preventSessionsForUser()

◆ resetCache()

◆ setHookContainer()

◆ setLogger()

◆ setupPHPSessionHandler()

◆ shutdown()

◆ singleton()

◆ validateSessionId()

Member Data Documentation

◆ $allSessionBackends

◆ $allSessionIds

◆ $config

◆ $globalSession

◆ $globalSessionRequest

◆ $hookContainer

◆ $hookRunner

◆ $instance

◆ $logger

◆ $preventUsers

◆ $sessionProviders

◆ $store

◆ $userNameUtils

◆ $varyCookies

◆ $varyHeaders