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<?php
/**
* The Session class holds information about a user session, and everything attached to it.
*
* The session will have a duration, and validity, and also cache information about the different
* federation protocols, as Shibboleth and SAML 2.0. On the IdP side the Session class holds
* information about all the currently logged in SPs. This is used when the user initiate a
* Single-Log-Out.
*
* @author Andreas Åkre Solberg, UNINETT AS. <andreas.solberg@uninett.no>
* @package simpleSAMLphp
* @version $Id: Session.php 3105 2012-05-24 06:08:23Z olavmrk $
*/
class SimpleSAML_Session {
/**
* This is a timeout value for setData, which indicates that the data should be deleted
* on logout.
*/
const DATA_TIMEOUT_LOGOUT = 'logoutTimeout';
/**
* The list of loaded session objects.
*
* This is an associative array indexed with the session id.
*
* @var array
*/
private static $sessions = array();
/**
* This variable holds the instance of the session - Singleton approach.
*/
private static $instance = null;
/**
* The session ID of this session.
*
* @var string|NULL
*/
private $sessionId;
/**
* Transient session flag.
*
* @var boolean|FALSE
*/
private $transient = FALSE;
/**
* The track id is a new random unique identifier that is generate for each session.
* This is used in the debug logs and error messages to easily track more information
* about what went wrong.
*/
private $trackid = 0;
private $idp = null;
private $authenticated = null;
private $attributes = null;
private $sessionindex = null;
private $nameid = null;
private $authority = null;
// Session duration parameters
private $sessionstarted = null;
private $sessionduration = null;
// Track whether the session object is modified or not.
private $dirty = false;
/**
* This is an array of registered logout handlers.
* All registered logout handlers will be called on logout.
*/
private $logout_handlers = array();
/**
* This is an array of objects which will autoexpire after a set time. It is used
* where one needs to store some information - for example a logout request, but doesn't
* want it to be stored forever.
*
* The data store contains three levels of nested associative arrays. The first is the data type, the
* second is the identifier, and the third contains the expire time of the data and the data itself.
*/
private $dataStore = null;
/**
* Current NameIDs for sessions.
*
* Stored as a two-level associative array: $sessionNameId[<entityType>][<entityId>]
*/
private $sessionNameId;
/**
* Logout state when authenticated with authentication sources.
*/
private $logoutState;
/**
* Persistent authentication state.
*
* @array
*/
private $authState;
/**
* The list of IdP-SP associations.
*
* This is an associative array with the IdP id as the key, and the list of
* associations as the value.
*
* @var array
*/
private $associations = array();
/**
* The authentication token.
*
* This token is used to prevent session fixation attacks.
*
* @var string|NULL
*/
private $authToken;
/**
* Authentication data.
*
* This is an array with authentication data for the various authsources.
*
* @var array|NULL Associative array of associative arrays.
*/
private $authData;
/**
* private constructor restricts instantiaton to getInstance()
*/
private function __construct($transient = FALSE) {
$this->authData = array();
if ($transient) {
$this->trackid = 'XXXXXXXXXX';
$this->transient = TRUE;
return;
}
$sh = SimpleSAML_SessionHandler::getSessionHandler();
$this->sessionId = $sh->getCookieSessionId();
$this->trackid = substr(md5(uniqid(rand(), true)), 0, 10);
$this->dirty = TRUE;
$this->addShutdownFunction();
}
/**
* Upgrade this session object to use the $authData property.
*
* TODO: Remove in version 1.8.
*/
private function upgradeAuthData() {
$this->authData = array();
if ($this->authority === NULL || !$this->authenticated) {
return;
}
if ($this->authState !== NULL) {
$data = $this->authState;
} else {
$data = array();
}
if ($this->attributes !== NULL) {
$data['Attributes'] = $this->attributes;
} else {
$data['Attributes'] = array();
}
if ($this->idp !== NULL) {
$data['saml:sp:IdP'] = $this->idp;
}
if ($this->sessionindex !== NULL) {
$data['saml:sp:SessionIndex'] = $this->sessionindex;
}
if ($this->nameid !== NULL) {
$data['saml:sp:NameID'] = $this->nameid;
}
$data['AuthnInstant'] = $this->sessionstarted;
$data['Expire'] = $this->sessionstarted + $this->sessionduration;
$this->sessionstarted = NULL;
$this->sessionduration = NULL;
if ($this->logoutState !== NULL) {
$data['LogoutState'] = $this->logoutState;
}
if (!empty($this->logout_handlers)) {
$data['LogoutHandlers'] = $this->logout_handlers;
}
$this->authData[$this->authority] = $data;
}
/**
* This function is called after this class has been deserialized.
*/
public function __wakeup() {
$this->addShutdownFunction();
/* TODO: Remove for version 1.8. */
if ($this->authData === NULL) {
$this->upgradeAuthData();
}
}
/**
* Retrieves the current session. Will create a new session if there isn't a session.
*
* @return The current session.
*/
public static function getInstance() {
/* Check if we already have initialized the session. */
if (isset(self::$instance)) {
return self::$instance;
}
/* Check if we have stored a session stored with the session
* handler.
*/
try {
self::$instance = self::getSession();
} catch (Exception $e) {
/* For some reason, we were unable to initialize this session. Use a transient session instead. */
self::useTransientSession();
$globalConfig = SimpleSAML_Configuration::getInstance();
if ($globalConfig->getBoolean('session.disable_fallback', FALSE) === TRUE) {
throw $e;
}
if ($e instanceof SimpleSAML_Error_Exception) {
SimpleSAML_Logger::error('Error loading session:');
$e->logError();
} else {
SimpleSAML_Logger::error('Error loading session: ' . $e->getMessage());
}
return self::$instance;
}
if(self::$instance !== NULL) {
return self::$instance;
}
/* Create a new session. */
self::$instance = new SimpleSAML_Session();
return self::$instance;
}
/**
* Use a transient session.
*
* Create a session that should not be saved at the end of the request.
* Subsequent calls to getInstance() will return this transient session.
*/
public static function useTransientSession() {
if (isset(self::$instance)) {
/* We already have a session. Don't bother with a transient session. */
return;
}
self::$instance = new SimpleSAML_Session(TRUE);
}
/**
* Retrieve the session ID of this session.
*
* @return string|NULL The session ID, or NULL if this is a transient session.
*/
public function getSessionId() {
return $this->sessionId;
}
/**
* Retrieve if session is transient.
*
* @return boolean The session transient flag.
*/
public function isTransient() {
return $this->transient;
}
/**
* Get a unique ID that will be permanent for this session.
* Used for debugging and tracing log files related to a session.
*/
public function getTrackID() {
return $this->trackid;
}
/**
* Who authorized this session. could be in example saml2, shib13, login,login-admin etc.
*/
public function getAuthority() {
return $this->authority;
}
/**
* This method retrieves from session a cache of a specific Authentication Request
* The complete request is not stored, instead the values that will be needed later
* are stored in an assoc array.
*
* @param $protocol saml2 or shib13
* @param $requestid The request id used as a key to lookup the cache.
*
* @return Returns an assoc array of cached variables associated with the
* authentication request.
*/
public function getAuthnRequest($protocol, $requestid) {
SimpleSAML_Logger::debug('Library - Session: Get authnrequest from cache ' . $protocol . ' time:' . time() . ' id: '. $requestid );
$type = 'AuthnRequest-' . $protocol;
$authnRequest = $this->getData($type, $requestid);
if($authnRequest === NULL) {
/*
* Could not find requested ID. Throw an error. Could be that it is never set, or that it is deleted due to age.
*/
throw new Exception('Could not find cached version of authentication request with ID ' . $requestid . ' (' . $protocol . ')');
}
return $authnRequest;
}
/**
* This method sets a cached assoc array to the authentication request cache storage.
*
* @param $protocol saml2 or shib13
* @param $requestid The request id used as a key to lookup the cache.
* @param $cache The assoc array that will be stored.
*/
public function setAuthnRequest($protocol, $requestid, array $cache) {
SimpleSAML_Logger::debug('Library - Session: Set authnrequest ' . $protocol . ' time:' . time() . ' size:' . count($cache) . ' id: '. $requestid );
$type = 'AuthnRequest-' . $protocol;
$this->setData($type, $requestid, $cache);
}
/**
* Set the IdP we are authenticated against.
*
* @param string|NULL $idp Our current IdP, or NULL if we aren't authenticated with an IdP.
*/
public function setIdP($idp) {
assert('is_string($idp) || is_null($idp)');
assert('isset($this->authData[$this->authority])');
SimpleSAML_Logger::debug('Library - Session: Set IdP to : ' . $idp);
$this->dirty = true;
if ($idp !== NULL) {
$this->authData[$this->authority]['saml:sp:IdP'] = $idp;
} else {
unset($this->authData[$this->authority]['saml:sp:IdP']);
}
}
/**
* Retrieve the IdP we are currently authenticated against.
*
* @return string|NULL Our current IdP, or NULL if we aren't authenticated with an IdP.
*/
public function getIdP() {
if (!isset($this->authData[$this->authority]['saml:sp:IdP'])) {
return NULL;
}
return $this->authData[$this->authority]['saml:sp:IdP'];
}
/**
* Set the SessionIndex we received from our IdP.
*
* @param string|NULL $sessionindex Our SessionIndex.
*/
public function setSessionIndex($sessionindex) {
assert('is_string($sessionindex) || is_null($sessionindex)');
assert('isset($this->authData[$this->authority])');
SimpleSAML_Logger::debug('Library - Session: Set sessionindex: ' . $sessionindex);
$this->dirty = true;
if ($sessionindex !== NULL) {
$this->authData[$this->authority]['saml:sp:SessionIndex'] = $sessionindex;
} else {
unset($this->authData[$this->authority]['saml:sp:SessionIndex']);
}
}
/**
* Retrieve our SessionIndex.
*
* @return string|NULL Our SessionIndex.
*/
public function getSessionIndex() {
if (!isset($this->authData[$this->authority]['saml:sp:SessionIndex'])) {
return NULL;
}
return $this->authData[$this->authority]['saml:sp:SessionIndex'];
}
/**
* Set our current NameID.
*
* @param array|NULL $nameid The NameID we received from the IdP
*/
public function setNameID($nameid) {
assert('is_array($nameid) || is_null($nameid)');
assert('isset($this->authData[$this->authority])');
SimpleSAML_Logger::debug('Library - Session: Set nameID: ');
$this->dirty = true;
if ($nameid !== NULL) {
$this->authData[$this->authority]['saml:sp:NameID'] = $nameid;
} else {
unset($this->authData[$this->authority]['saml:sp:NameID']);
}
}
/**
* Get our NameID.
*
* @return array|NULL The NameID we received from the IdP.
*/
public function getNameID() {
if (!isset($this->authData[$this->authority]['saml:sp:NameID'])) {
return NULL;
}
return $this->authData[$this->authority]['saml:sp:NameID'];
}
/**
* Marks the user as logged in with the specified authority.
*
* If the user already has logged in, the user will be logged out first.
*
* @param string $authority The authority the user logged in with.
* @param array|NULL $data The authentication data for this authority.
*/
public function doLogin($authority, array $data = NULL) {
assert('is_string($authority)');
assert('is_array($data) || is_null($data)');
SimpleSAML_Logger::debug('Session: doLogin("' . $authority . '")');
$this->dirty = TRUE;
if (isset($this->authData[$authority])) {
/* We are already logged in. Log the user out first. */
$this->doLogout($authority);
}
if ($data === NULL) {
$data = array();
}
$globalConfig = SimpleSAML_Configuration::getInstance();
if (!isset($data['AuthnInstant'])) {
$data['AuthnInstant'] = time();
}
$maxSessionExpire = time() + $globalConfig->getInteger('session.duration', 8*60*60);
if (!isset($data['Expire']) || $data['Expire'] > $maxSessionExpire) {
/* Unset, or beyond our session lifetime. Clamp it to our maximum session lifetime. */
$data['Expire'] = $maxSessionExpire;
}
$this->authData[$authority] = $data;
$this->authority = $authority;
$this->authToken = SimpleSAML_Utilities::generateID();
$sessionHandler = SimpleSAML_SessionHandler::getSessionHandler();
$sessionHandler->setCookie($globalConfig->getString('session.authtoken.cookiename', 'SimpleSAMLAuthToken'), $this->authToken);
}
/**
* Marks the user as logged out.
*
* This function will call any registered logout handlers before marking the user as logged out.
*
* @param string|NULL $authority The authentication source we are logging out of.
*/
public function doLogout($authority = NULL) {
SimpleSAML_Logger::debug('Session: doLogout(' . var_export($authority, TRUE) . ')');
if ($authority === NULL) {
if ($this->authority === NULL) {
SimpleSAML_Logger::debug('Session: No current authsource - not logging out.');
return;
}
$authority = $this->authority;
}
if (!isset($this->authData[$authority])) {
SimpleSAML_Logger::debug('Session: Already logged out of ' . $authority . '.');
return;
}
$this->dirty = TRUE;
$this->callLogoutHandlers($authority);
unset($this->authData[$authority]);
if ($this->authority === $authority) {
$this->authority = NULL;
}
/* Delete data which expires on logout. */
$this->expireDataLogout();
}
/**
* Set the lifetime of our current authentication session.
*
* @param int $duration The number of seconds this authentication session is valid.
*/
public function setSessionDuration($duration) {
assert('is_int($duration)');
assert('isset($this->authData[$this->authority])');
SimpleSAML_Logger::debug('Library - Session: Set session duration ' . $duration);
$this->dirty = true;
$this->sessionduration = $duration;
$this->authData[$this->authority]['Expire'] = time() + $duration;
}
/**
* Is the session representing an authenticated user, and is the session still alive.
* This function will return false after the user has timed out.
*
* @param string $authority The authentication source that the user should be authenticated with.
* @return TRUE if the user has a valid session, FALSE if not.
*/
public function isValid($authority) {
assert('is_string($authority)');
if (!isset($this->authData[$authority])) {
SimpleSAML_Logger::debug('Session: '. var_export($authority, TRUE) .' not valid because we are not authenticated.');
return FALSE;
}
if ($this->authData[$authority]['Expire'] <= time()) {
SimpleSAML_Logger::debug('Session: ' . var_export($authority, TRUE) .' not valid because it is expired.');
return FALSE;
}
SimpleSAML_Logger::debug('Session: Valid session found with ' . var_export($authority, TRUE) . '.');
return TRUE;
}
/**
* If the user is authenticated, how much time is left of the session.
*
* @return int The number of seconds until the session expires.
*/
public function remainingTime() {
if (!isset($this->authData[$this->authority])) {
/* Not authenticated. */
return -1;
}
assert('isset($this->authData[$this->authority]["Expire"])');
return $this->authData[$this->authority]['Expire'] - time();
}
/**
* Is the user authenticated. This function does not check the session duration.
*
* @return bool TRUE if the user is authenticated, FALSE otherwise.
*/
public function isAuthenticated() {
return isset($this->authData[$this->authority]);
}
/**
* Retrieve the time the user was authenticated.
*
* @return int|NULL The timestamp for when the user was authenticated. NULL if the user hasn't authenticated.
*/
public function getAuthnInstant() {
if (!isset($this->authData[$this->authority])) {
/* Not authenticated. */
return NULL;
}
assert('isset($this->authData[$this->authority]["AuthnInstant"])');
return $this->authData[$this->authority]['AuthnInstant'];
}
/**
* Retrieve the attributes associated with this session.
*
* @return array|NULL The attributes.
*/
public function getAttributes() {
if (!isset($this->authData[$this->authority]['Attributes'])) {
return NULL;
}
return $this->authData[$this->authority]['Attributes'];
}
/**
* Retrieve a single attribute.
*
* @param string $name The name of the attribute.
* @return array|NULL The values of the given attribute.
*/
public function getAttribute($name) {
if (!isset($this->authData[$this->authority]['Attributes'][$name])) {
return NULL;
}
return $this->authData[$this->authority]['Attributes'][$name];
}
/**
* Set the attributes for this session.
*
* @param array|NULL $attributes The attributes of this session.
*/
public function setAttributes($attributes) {
assert('isset($this->authData[$this->authority])');
$this->dirty = true;
$this->authData[$this->authority]['Attributes'] = $attributes;
}
/**
* Set the values of a single attribute.
*
* @param string $name The name of the attribute.
* @param array $value The values of the attribute.
*/
public function setAttribute($name, $value) {
assert('isset($this->authData[$this->authority])');
$this->dirty = true;
$this->authData[$this->authority]['Attributes'][$name] = $value;
}
/**
* Calculates the size of the session object after serialization
*
* @return The size of the session measured in bytes.
*/
public function getSize() {
$s = serialize($this);
return strlen($s);
}
/**
* This function registers a logout handler.
*
* @param $classname The class which contains the logout handler.
* @param $functionname The logout handler function.
*/
public function registerLogoutHandler($classname, $functionname) {
assert('isset($this->authData[$this->authority])');
$logout_handler = array($classname, $functionname);
if(!is_callable($logout_handler)) {
throw new Exception('Logout handler is not a vaild function: ' . $classname . '::' .
$functionname);
}
$this->authData[$this->authority]['LogoutHandlers'][] = $logout_handler;
$this->dirty = TRUE;
}
/**
* This function calls all registered logout handlers.
*
* @param string $authority The authentication source we are logging out from.
*/
private function callLogoutHandlers($authority) {
assert('is_string($authority)');
assert('isset($this->authData[$authority])');
if (empty($this->authData[$authority]['LogoutHandlers'])) {
return;
}
foreach($this->authData[$authority]['LogoutHandlers'] as $handler) {
/* Verify that the logout handler is a valid function. */
if(!is_callable($handler)) {
$classname = $handler[0];
$functionname = $handler[1];
throw new Exception('Logout handler is not a vaild function: ' . $classname . '::' .
$functionname);
}
/* Call the logout handler. */
call_user_func($handler);
}
/* We require the logout handlers to register themselves again if they want to be called later. */
unset($this->authData[$authority]['LogoutHandlers']);
}
/**
* This function removes expired data from the data store.
*
* Note that this function doesn't mark the session object as dirty. This means that
* if the only change to the session object is that some data has expired, it will not be
* written back to the session store.
*/
private function expireData() {
if(!is_array($this->dataStore)) {
return;
}
$ct = time();
foreach($this->dataStore as &$typedData) {
foreach($typedData as $id => $info) {
if ($info['expires'] === self::DATA_TIMEOUT_LOGOUT) {
/* This data only expires on logout. */
continue;
}
if($ct > $info['expires']) {
unset($typedData[$id]);
}
}
}
}
/**
* This function deletes data which should be deleted on logout from the data store.
*/
private function expireDataLogout() {
if(!is_array($this->dataStore)) {
return;
}
$this->dirty = TRUE;
foreach ($this->dataStore as &$typedData) {
foreach ($typedData as $id => $info) {
if ($info['expires'] === self::DATA_TIMEOUT_LOGOUT) {
unset($typedData[$id]);
}
}
}
}
/**
* Delete data from the data store.
*
* This function immediately deletes the data with the given type and id from the data store.
*
* @param string $type The type of the data.
* @param string $id The identifier of the data.
*/
public function deleteData($type, $id) {
assert('is_string($type)');
assert('is_string($id)');
if (!is_array($this->dataStore)) {
return;
}
if(!array_key_exists($type, $this->dataStore)) {
return;
}
unset($this->dataStore[$type][$id]);
$this->dirty = TRUE;
}
/**
* This function stores data in the data store.
*
* The timeout value can be SimpleSAML_Session::DATA_TIMEOUT_LOGOUT, which indicates
* that the data should be deleted on logout (and not before).
*
* @param $type The type of the data. This is checked when retrieving data from the store.
* @param $id The identifier of the data.
* @param $data The data.
* @param $timeout The number of seconds this data should be stored after its last access.
* This parameter is optional. The default value is set in 'session.datastore.timeout',
* and the default is 4 hours.
*/
public function setData($type, $id, $data, $timeout = NULL) {
assert('is_string($type)');
assert('is_string($id)');
assert('is_int($timeout) || is_null($timeout) || $timeout === self::DATA_TIMEOUT_LOGOUT');
/* Clean out old data. */
$this->expireData();
if($timeout === NULL) {
/* Use the default timeout. */
$configuration = SimpleSAML_Configuration::getInstance();
$timeout = $configuration->getInteger('session.datastore.timeout', NULL);
if($timeout !== NULL) {
if ($timeout <= 0) {
throw new Exception('The value of the session.datastore.timeout' .
' configuration option should be a positive integer.');
}
} else {
/* For backwards compatibility. */
$timeout = $configuration->getInteger('session.requestcache', 4*(60*60));
if ($timeout <= 0) {
throw new Exception('The value of the session.requestcache' .
' configuration option should be a positive integer.');
}
}
}
if ($timeout === self::DATA_TIMEOUT_LOGOUT) {
$expires = self::DATA_TIMEOUT_LOGOUT;
} else {
$expires = time() + $timeout;
}
$dataInfo = array(
'expires' => $expires,
'timeout' => $timeout,
'data' => $data
);
if(!is_array($this->dataStore)) {
$this->dataStore = array();
}
if(!array_key_exists($type, $this->dataStore)) {
$this->dataStore[$type] = array();
}
$this->dataStore[$type][$id] = $dataInfo;
$this->dirty = TRUE;
}
/**
* This function retrieves data from the data store.
*
* Note that this will not change when the data stored in the data store will expire. If that is required,
* the data should be written back with setData.
*
* @param $type The type of the data. This must match the type used when adding the data.
* @param $id The identifier of the data. Can be NULL, in which case NULL will be returned.
* @return The data of the given type with the given id or NULL if the data doesn't exist in the data store.
*/
public function getData($type, $id) {
assert('is_string($type)');
assert('$id === NULL || is_string($id)');
if($id === NULL) {
return NULL;
}
$this->expireData();
if(!is_array($this->dataStore)) {
return NULL;
}
if(!array_key_exists($type, $this->dataStore)) {
return NULL;
}
if(!array_key_exists($id, $this->dataStore[$type])) {
return NULL;
}
return $this->dataStore[$type][$id]['data'];
}
/**
* This function retrieves all data of the specified type from the data store.
*
* The data will be returned as an associative array with the id of the data as the key, and the data
* as the value of each key. The value will be stored as a copy of the original data. setData must be
* used to update the data.
*
* An empty array will be returned if no data of the given type is found.
*
* @param $type The type of the data.
* @return An associative array with all data of the given type.
*/
public function getDataOfType($type) {
assert('is_string($type)');
if(!is_array($this->dataStore)) {
return array();
}
if(!array_key_exists($type, $this->dataStore)) {
return array();
}
$ret = array();
foreach($this->dataStore[$type] as $id => $info) {
$ret[$id] = $info['data'];
}
return $ret;
}
/**
* Create a new session and cache it.
*
* @param string $sessionId The new session we should create.
*/
public static function createSession($sessionId) {
assert('is_string($sessionId)');
self::$sessions[$sessionId] = NULL;
}
/**
* Load a session from the session handler.
*
* @param string|NULL $sessionId The session we should load, or NULL to load the current session.
* @return The session which is stored in the session handler, or NULL if the session wasn't found.
*/
public static function getSession($sessionId = NULL) {
assert('is_string($sessionId) || is_null($sessionId)');
$sh = SimpleSAML_SessionHandler::getSessionHandler();
if ($sessionId === NULL) {
$checkToken = TRUE;
$sessionId = $sh->getCookieSessionId();
} else {
$checkToken = FALSE;
}
if (array_key_exists($sessionId, self::$sessions)) {
return self::$sessions[$sessionId];
}
$session = $sh->loadSession($sessionId);
if($session === NULL) {
return NULL;
}
assert('$session instanceof self');
/* For backwardscompatibility. Remove after 1.7. */
if ($session->sessionId === NULL) {
$session->sessionId = $sh->getCookieSessionId();
}
if ($checkToken && $session->authToken !== NULL) {
$globalConfig = SimpleSAML_Configuration::getInstance();
$authTokenCookieName = $globalConfig->getString('session.authtoken.cookiename', 'SimpleSAMLAuthToken');
if (!isset($_COOKIE[$authTokenCookieName])) {
SimpleSAML_Logger::warning('Missing AuthToken cookie.');
return NULL;
}
if ($_COOKIE[$authTokenCookieName] !== $session->authToken) {
SimpleSAML_Logger::warning('Invalid AuthToken cookie.');
return NULL;
}
}
self::$sessions[$sessionId] = $session;
return $session;
}
/**
* Save the session to the session handler.
*
* This function will check the dirty-flag to check if the session has changed.
*/
public function saveSession() {
if(!$this->dirty) {
/* Session hasn't changed - don't bother saving it. */
return;
}
$this->dirty = FALSE;
$sh = SimpleSAML_SessionHandler::getSessionHandler();
try {
$sh->saveSession($this);
} catch (Exception $e) {
if (!($e instanceof SimpleSAML_Error_Exception)) {
$e = new SimpleSAML_Error_UnserializableException($e);
}
SimpleSAML_Logger::error('Unable to save session.');
$e->logError();
}
}
/**
* Add a shutdown function for saving this session object on exit.
*/
private function addShutdownFunction() {
register_shutdown_function(array($this, 'saveSession'));
}
/**
* Set the logout state for this session.
*
* @param array $state The state array.
*/
public function setLogoutState(array $state) {
assert('isset($this->authData[$this->authority])');
$this->dirty = TRUE;
$this->authData[$this->authority]['LogoutState'] = $state;
}
/**
* Retrieve the logout state for this session.
*
* @return array The logout state. If no logout state is set, an empty array will be returned.
*/
public function getLogoutState() {
assert('isset($this->authData[$this->authority])');
if (!isset($this->authData[$this->authority]['LogoutState'])) {
return array();
}
return $this->authData[$this->authority]['LogoutState'];
}
/**
* Get the current persistent authentication state.
*
* @param string|NULL $authority The authority to retrieve the data from.
* @return array The current persistent authentication state, or NULL if not authenticated.
*/
public function getAuthState($authority = NULL) {
assert('is_string($authority) || is_null($authority)');
if ($authority === NULL) {
$authority = $this->authority;
}
if (!isset($this->authData[$authority])) {
return NULL;
}
return $this->authData[$authority];
}
/**
* Check whether the session cookie is set.
*
* This function will only return FALSE if is is certain that the cookie isn't set.
*
* @return bool TRUE if it was set, FALSE if not.
*/
public function hasSessionCookie() {
$sh = SimpleSAML_SessionHandler::getSessionHandler();
return $sh->hasSessionCookie();
}
/**
* Add an SP association for an IdP.
*
* This function is only for use by the SimpleSAML_IdP class.
*
* @param string $idp The IdP id.
* @param array $association The association we should add.
*/
public function addAssociation($idp, array $association) {
assert('is_string($idp)');
assert('isset($association["id"])');
assert('isset($association["Handler"])');
if (!isset($this->associations)) {
$this->associations = array();
}
if (!isset($this->associations[$idp])) {
$this->associations[$idp] = array();
}
$this->associations[$idp][$association['id']] = $association;
$this->dirty = TRUE;
}
/**
* Retrieve the associations for an IdP.
*
* This function is only for use by the SimpleSAML_IdP class.
*
* @param string $idp The IdP id.
* @return array The IdP associations.
*/
public function getAssociations($idp) {
assert('is_string($idp)');
if (substr($idp, 0, 6) === 'saml2:' && !empty($this->sp_at_idpsessions)) {
/* Remove in 1.7. */
$this->upgradeAssociations($idp);
}
if (!isset($this->associations)) {
$this->associations = array();
}
if (!isset($this->associations[$idp])) {
return array();
}
foreach ($this->associations[$idp] as $id => $assoc) {
if (!isset($assoc['Expires'])) {
continue;
}
if ($assoc['Expires'] >= time()) {
continue;
}
unset($this->associations[$idp][$id]);
}
return $this->associations[$idp];
}
/**
* Remove an SP association for an IdP.
*
* This function is only for use by the SimpleSAML_IdP class.
*
* @param string $idp The IdP id.
* @param string $associationId The id of the association.
*/
public function terminateAssociation($idp, $associationId) {
assert('is_string($idp)');
assert('is_string($associationId)');
if (substr($idp, 0, 6) === 'saml2:' && !empty($this->sp_at_idpsessions)) {
/* Remove in 1.7. */
$this->upgradeAssociations($idp);
}
if (!isset($this->associations)) {
return;
}
if (!isset($this->associations[$idp])) {
return;
}
unset($this->associations[$idp][$associationId]);
$this->dirty = TRUE;
}
/**
* Get a list of associated SAML 2 SPs.
*
* This function is just for backwards-compatibility. New code should
* use the SimpleSAML_IdP::getAssociations()-function.
*
* @return array Array of SAML 2 entitiyIDs.
* @deprecated Will be removed in the future.
*/
public function get_sp_list() {
$metadata = SimpleSAML_Metadata_MetaDataStorageHandler::getMetadataHandler();
try {
$idpEntityId = $metadata->getMetaDataCurrentEntityID('saml20-idp-hosted');
$idp = SimpleSAML_IdP::getById('saml2:' . $idpEntityId);
} catch (Exception $e) {
/* No SAML 2 IdP configured? */
return array();
}
$ret = array();
foreach ($idp->getAssociations() as $assoc) {
if (isset($assoc['saml:entityID'])) {
$ret[] = $assoc['saml:entityID'];
}
}
return $ret;
}
/**
* Retrieve authentication data.
*
* @param string $authority The authentication source we should retrieve data from.
* @param string $name The name of the data we should retrieve.
* @return mixed The value, or NULL if the value wasn't found.
*/
public function getAuthData($authority, $name) {
assert('is_string($authority)');
assert('is_string($name)');
if (!isset($this->authData[$authority][$name])) {
return NULL;
}
return $this->authData[$authority][$name];
}
}
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