A CookieSessionProvider persists sessions using cookies. More...

Inheritance diagram for MediaWiki\Session\CookieSessionProvider:

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Collaboration diagram for MediaWiki\Session\CookieSessionProvider:

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Public Member Functions
	__construct ( $params=[])

	canChangeUser ()
	Indicate whether the user associated with the request can be changed.

	getRememberUserDuration ()
	Returns the duration (in seconds) for which users will be remembered when Session::setRememberUser() is set.

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

	persistSession (SessionBackend $session, WebRequest $request)
	Persist a session into a request/response.

	persistsSessionId ()
	Indicate whether self::persistSession() can save arbitrary session IDs.

	provideSessionInfo (WebRequest $request)
	Provide session info for a request.

	setConfig (Config $config)
	Set configuration.

	suggestLoginUsername (WebRequest $request)
	Get a suggested username for the login form.

	unpersistSession (WebRequest $request)
	Remove any persisted session from a request/response.

	whyNoSession ()
	Return a Message for why sessions might not be being persisted.

Public Member Functions inherited from MediaWiki\Session\SessionProvider
	__construct ()

	__toString ()

	describe (Language $lang)
	Return an identifier for this session type.

	getAllowedUserRights (SessionBackend $backend)
	Fetch the rights allowed the user when the specified session is active.

	getManager ()
	Get the session manager.

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

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

	mergeMetadata (array $savedMetadata, array $providedMetadata)
	Merge saved session provider metadata.

	newSessionInfo ( $id=null)
	Provide session info for a new, empty session.

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

	refreshSessionInfo (SessionInfo $info, WebRequest $request, &$metadata)
	Validate a loaded SessionInfo and refresh provider metadata.

	sessionIdWasReset (SessionBackend $session, $oldId)
	Notification that the session ID was reset.

	setLogger (LoggerInterface $logger)

	setManager (SessionManager $manager)
	Set the session manager.

Protected Member Functions
	cookieDataToExport ( $user, $remember)
	Return the data to store in cookies.

	getCookie ( $request, $key, $prefix, $default=null)
	Get a cookie.

	getExtendedLoginCookies ()
	Gets the list of cookies that must be set to the 'remember me' duration, if $wgExtendedLoginCookieExpiration is in use.

	getLoginCookieExpiration ( $cookieName, $shouldRememberUser)
	Returns the lifespan of the login cookies, in seconds.

	getUserInfoFromCookies ( $request)
	Fetch the user identity from cookies.

	sessionDataToExport ( $user)
	Return extra data to store in the session.

	setForceHTTPSCookie ( $set, SessionBackend $backend=null, WebRequest $request)
	Set the "forceHTTPS" cookie.

	setLoggedOutCookie ( $loggedOut, WebRequest $request)
	Set the "logged out" cookie.

Protected Member Functions inherited from MediaWiki\Session\SessionProvider
	describeMessage ()
	Return a Message identifying this session type.

	hashToSessionId ( $data, $key=null)
	Hash data as a session ID.

Protected Attributes
	$cookieOptions = []

	$params = []

Protected Attributes inherited from MediaWiki\Session\SessionProvider
Config	$config

LoggerInterface	$logger

SessionManager	$manager

int	$priority
	Session priority.

Detailed Description

A CookieSessionProvider persists sessions using cookies.

Since: 1.27

Definition at line 36 of file CookieSessionProvider.php.

Constructor & Destructor Documentation

◆ __construct()

MediaWiki\Session\CookieSessionProvider::__construct ( $params = [] )

Parameters

array

$params

Keys include:

priority: (required) Priority of the returned sessions
callUserSetCookiesHook: Whether to call the deprecated hook
sessionName: Session cookie name. Doesn't honor 'prefix'. Defaults to $wgSessionName, or $wgCookiePrefix . '_session' if that is unset.
cookieOptions: Options to pass to WebRequest::setCookie():
- prefix: Cookie prefix, defaults to $wgCookiePrefix
- path: Cookie path, defaults to $wgCookiePath
- domain: Cookie domain, defaults to $wgCookieDomain
- secure: Cookie secure flag, defaults to $wgCookieSecure
- httpOnly: Cookie httpOnly flag, defaults to $wgCookieHttpOnly

Definition at line 54 of file CookieSessionProvider.php.

References MediaWiki\Session\CookieSessionProvider\$params, MediaWiki\Session\SessionInfo\MAX_PRIORITY, and MediaWiki\Session\SessionInfo\MIN_PRIORITY.

Member Function Documentation

◆ canChangeUser()

MediaWiki\Session\CookieSessionProvider::canChangeUser ( )

Indicate whether the user associated with the request can be changed.

If false, any session passed to self::persistSession() will have a user that was originally provided by self::provideSessionInfo(). Further, self::provideSessionInfo() may only provide sessions that have a user already set.

If true, the provider may be passed sessions with arbitrary users, and will be expected to manipulate the request in such a way that future requests will cause self::provideSessionInfo() to provide a SessionInfo with that ID. This can be as simple as not passing any 'userInfo' into SessionInfo's constructor, in which case SessionInfo will load the user from the saved session's metadata.

For example, a session provider for OAuth or SSL client certificates would function by matching the OAuth headers or certificate to a particular user, and thus would return false here since it can't arbitrarily assign those OAuth credentials or that certificate to a different user. A session provider that shoves information into cookies, on the other hand, could easily do so.

Access:\n protected For use by \MediaWiki\Session\SessionBackend only

Returns: bool

Reimplemented from MediaWiki\Session\SessionProvider.

Definition at line 184 of file CookieSessionProvider.php.

◆ cookieDataToExport()

MediaWiki\Session\CookieSessionProvider::cookieDataToExport	(	$user,
		$remember
	)

protected

Return the data to store in cookies.

Parameters

User	$user
bool	$remember

Returns: array $cookies Set value false to unset the cookie

Definition at line 364 of file CookieSessionProvider.php.

References $user, and string.

Referenced by MediaWiki\Session\CookieSessionProvider\persistSession().

◆ getCookie()

MediaWiki\Session\CookieSessionProvider::getCookie	(	$request,
		$key,
		$prefix,
		$default = `null`
	)

protected

Get a cookie.

Contains an auth-specific hack.

Parameters

\\WebRequest	$request
string	$key
string	$prefix
mixed \| null	$default

Returns: mixed

Definition at line 345 of file CookieSessionProvider.php.

References $request, and $value.

Referenced by MediaWiki\Session\CookieSessionProvider\getUserInfoFromCookies(), MediaWiki\Session\CookieSessionProvider\provideSessionInfo(), MediaWiki\Session\CookieSessionProvider\setLoggedOutCookie(), and MediaWiki\Session\CookieSessionProvider\suggestLoginUsername().

◆ getExtendedLoginCookies()

MediaWiki\Session\CookieSessionProvider::getExtendedLoginCookies ( )

protected

Gets the list of cookies that must be set to the 'remember me' duration, if $wgExtendedLoginCookieExpiration is in use.

Returns: string[] Array of unprefixed cookie keys

Definition at line 413 of file CookieSessionProvider.php.

Referenced by MediaWiki\Session\CookieSessionProvider\getLoginCookieExpiration().

◆ getLoginCookieExpiration()

MediaWiki\Session\CookieSessionProvider::getLoginCookieExpiration	(	$cookieName,
		$shouldRememberUser
	)

protected

Returns the lifespan of the login cookies, in seconds.

0 means until the end of the session.

Cookies that are session-length do not call this function.

Parameters

string	$cookieName
bool	$shouldRememberUser	Whether the user should be remembered long-term

Returns: int Cookie expiration time in seconds; 0 for session cookies

Definition at line 427 of file CookieSessionProvider.php.

References MediaWiki\Session\CookieSessionProvider\getExtendedLoginCookies().

Referenced by MediaWiki\Session\CookieSessionProvider\getRememberUserDuration(), MediaWiki\Session\CookieSessionProvider\persistSession(), and MediaWiki\Session\CookieSessionProvider\setForceHTTPSCookie().

◆ getRememberUserDuration()

MediaWiki\Session\CookieSessionProvider::getRememberUserDuration ( )

Returns the duration (in seconds) for which users will be remembered when Session::setRememberUser() is set.

Null means setting the remember flag will have no effect (and endpoints should not offer that option).

Returns: int|null

Reimplemented from MediaWiki\Session\SessionProvider.

Definition at line 402 of file CookieSessionProvider.php.

References MediaWiki\Session\CookieSessionProvider\getLoginCookieExpiration().

◆ getUserInfoFromCookies()

MediaWiki\Session\CookieSessionProvider::getUserInfoFromCookies ( $request )

protected

Fetch the user identity from cookies.

Parameters

\\WebRequest $request

Returns: array (string|null $id, string|null $username, string|null $token)

Definition at line 328 of file CookieSessionProvider.php.

References $request, and MediaWiki\Session\CookieSessionProvider\getCookie().

Referenced by MediaWiki\Session\CookieSessionProvider\provideSessionInfo().

◆ getVaryCookies()

MediaWiki\Session\CookieSessionProvider::getVaryCookies ( )

Return the list of cookies that need varying on.

Access:\n protected For use by \MediaWiki\Session\SessionManager only

Returns: string[]

Reimplemented from MediaWiki\Session\SessionProvider.

Definition at line 304 of file CookieSessionProvider.php.

◆ persistSession()

MediaWiki\Session\CookieSessionProvider::persistSession	(	SessionBackend	$session,
		WebRequest	$request
	)

Persist a session into a request/response.

For example, you might set cookies for the session's ID, user ID, user name, and user token on the passed request.

To correctly persist a user independently of the session ID, the provider should persist both the user ID (or name, but preferably the ID) and the user token. When reading the data from the request, it should construct a User object from the ID/name and then verify that the User object's token matches the token included in the request. Should the tokens not match, an anonymous user must be passed to SessionInfo::__construct().

When persisting a user independently of the session ID, $session->shouldRememberUser() should be checked first. If this returns false, the user token must not be saved to cookies. The user name and/or ID may be persisted, and should be used to construct an unverified UserInfo to pass to SessionInfo::__construct().

A backend that cannot persist sesison ID or user info should implement this as a no-op.

Access:\n protected For use by \MediaWiki\Session\SessionBackend only

Parameters

SessionBackend	$session	Session to persist
WebRequest	$request	Request into which to persist the session

Reimplemented from MediaWiki\Session\SessionProvider.

Definition at line 188 of file CookieSessionProvider.php.

◆ persistsSessionId()

MediaWiki\Session\CookieSessionProvider::persistsSessionId ( )

Indicate whether self::persistSession() can save arbitrary session IDs.

If false, any session passed to self::persistSession() will have an ID that was originally provided by self::provideSessionInfo().

If true, the provider may be passed sessions with arbitrary session IDs, and will be expected to manipulate the request in such a way that future requests will cause self::provideSessionInfo() to provide a SessionInfo with that ID.

For example, a session provider for OAuth would function by matching the OAuth headers to a particular user, and then would use self::hashToSessionId() to turn the user and OAuth client ID (and maybe also the user token and client secret) into a session ID, and therefore can't easily assign that user+client a different ID. Similarly, a session provider for SSL client certificates would function by matching the certificate to a particular user, and then would use self::hashToSessionId() to turn the user and certificate fingerprint into a session ID, and therefore can't easily assign a different ID either. On the other hand, a provider that saves the session ID into a cookie can easily just set the cookie to a different value.

Access:\n protected For use by \MediaWiki\Session\SessionBackend only

Returns: bool

Reimplemented from MediaWiki\Session\SessionProvider.

Definition at line 180 of file CookieSessionProvider.php.

◆ provideSessionInfo()

MediaWiki\Session\CookieSessionProvider::provideSessionInfo ( WebRequest $request )

Provide session info for a request.

If no session exists for the request, return null. Otherwise return an SessionInfo object identifying the session.

If multiple SessionProviders provide sessions, the one with highest priority wins. In case of a tie, an exception is thrown. SessionProviders are encouraged to make priorities user-configurable unless only max-priority makes sense.

Warning: This will be called early in the MediaWiki setup process, before $wgUser, $wgLang, $wgOut, $wgParser, $wgTitle, and corresponding pieces of the main RequestContext are set up! If you try to use these, things will break.

Note: The SessionProvider must not attempt to auto-create users. MediaWiki will do this later (when it's safe) if the chosen session has a user with a valid name but no ID.