5c1a60a0ce
init() method was added to SessionProvider. It helps to inject dependecies. Overridable postInitSetup() method was added to SessionProvider. A provider can override this to do any necessary setup. SessionProvider ::setLogger(), ::setManager(), ::setConfig(), ::setHookContainer() were soft deprecated. Now developers must use SessionProvider::init() Bug: T275030 Change-Id: I958797881251572e4ec22e7dd9d13f74f7e216a3
1120 lines
35 KiB
PHP
1120 lines
35 KiB
PHP
<?php
|
|
/**
|
|
* MediaWiki\Session entry point
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
* http://www.gnu.org/copyleft/gpl.html
|
|
*
|
|
* @file
|
|
* @ingroup Session
|
|
*/
|
|
|
|
namespace MediaWiki\Session;
|
|
|
|
use BagOStuff;
|
|
use CachedBagOStuff;
|
|
use Config;
|
|
use FauxRequest;
|
|
use MediaWiki\HookContainer\HookContainer;
|
|
use MediaWiki\HookContainer\HookRunner;
|
|
use MediaWiki\MediaWikiServices;
|
|
use MediaWiki\User\UserNameUtils;
|
|
use MWException;
|
|
use Psr\Log\LoggerInterface;
|
|
use Psr\Log\LogLevel;
|
|
use User;
|
|
use WebRequest;
|
|
use Wikimedia\ObjectFactory;
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @anchor SessionManager-storage-expectations
|
|
*
|
|
* ## 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.
|
|
*
|
|
* @ingroup Session
|
|
* @since 1.27
|
|
* @see https://www.mediawiki.org/wiki/Manual:SessionManager_and_AuthManager
|
|
*/
|
|
class SessionManager implements SessionManagerInterface {
|
|
/** @var SessionManager|null */
|
|
private static $instance = null;
|
|
|
|
/** @var Session|null */
|
|
private static $globalSession = null;
|
|
|
|
/** @var WebRequest|null */
|
|
private static $globalSessionRequest = null;
|
|
|
|
/** @var LoggerInterface */
|
|
private $logger;
|
|
|
|
/** @var HookContainer */
|
|
private $hookContainer;
|
|
|
|
/** @var HookRunner */
|
|
private $hookRunner;
|
|
|
|
/** @var Config */
|
|
private $config;
|
|
|
|
/** @var UserNameUtils */
|
|
private $userNameUtils;
|
|
|
|
/** @var CachedBagOStuff|null */
|
|
private $store;
|
|
|
|
/** @var SessionProvider[] */
|
|
private $sessionProviders = null;
|
|
|
|
/** @var string[] */
|
|
private $varyCookies = null;
|
|
|
|
/** @var array */
|
|
private $varyHeaders = null;
|
|
|
|
/** @var SessionBackend[] */
|
|
private $allSessionBackends = [];
|
|
|
|
/** @var SessionId[] */
|
|
private $allSessionIds = [];
|
|
|
|
/** @var string[] */
|
|
private $preventUsers = [];
|
|
|
|
/**
|
|
* Get the global SessionManager
|
|
* @return self
|
|
*/
|
|
public static function singleton() {
|
|
if ( self::$instance === null ) {
|
|
self::$instance = new self();
|
|
}
|
|
return self::$instance;
|
|
}
|
|
|
|
/**
|
|
* If PHP's session_id() has been set, returns that session. Otherwise
|
|
* returns the session for RequestContext::getMain()->getRequest().
|
|
*
|
|
* @return Session
|
|
*/
|
|
public static function getGlobalSession() : Session {
|
|
if ( !PHPSessionHandler::isEnabled() ) {
|
|
$id = '';
|
|
} else {
|
|
$id = session_id();
|
|
}
|
|
|
|
$request = \RequestContext::getMain()->getRequest();
|
|
if (
|
|
!self::$globalSession // No global session is set up yet
|
|
|| self::$globalSessionRequest !== $request // The global WebRequest changed
|
|
|| $id !== '' && self::$globalSession->getId() !== $id // Someone messed with session_id()
|
|
) {
|
|
self::$globalSessionRequest = $request;
|
|
if ( $id === '' ) {
|
|
// session_id() wasn't used, so fetch the Session from the WebRequest.
|
|
// We use $request->getSession() instead of $singleton->getSessionForRequest()
|
|
// because doing the latter would require a public
|
|
// "$request->getSessionId()" method that would confuse end
|
|
// users by returning SessionId|null where they'd expect it to
|
|
// be short for $request->getSession()->getId(), and would
|
|
// wind up being a duplicate of the code in
|
|
// $request->getSession() anyway.
|
|
self::$globalSession = $request->getSession();
|
|
} else {
|
|
// Someone used session_id(), so we need to follow suit.
|
|
// Note this overwrites whatever session might already be
|
|
// associated with $request with the one for $id.
|
|
self::$globalSession = self::singleton()->getSessionById( $id, true, $request )
|
|
?: $request->getSession();
|
|
}
|
|
}
|
|
return self::$globalSession;
|
|
}
|
|
|
|
/**
|
|
* @param 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.
|
|
*/
|
|
public function __construct( $options = [] ) {
|
|
if ( isset( $options['config'] ) ) {
|
|
$this->config = $options['config'];
|
|
if ( !$this->config instanceof Config ) {
|
|
throw new \InvalidArgumentException(
|
|
'$options[\'config\'] must be an instance of Config'
|
|
);
|
|
}
|
|
} else {
|
|
$this->config = MediaWikiServices::getInstance()->getMainConfig();
|
|
}
|
|
|
|
if ( isset( $options['logger'] ) ) {
|
|
if ( !$options['logger'] instanceof LoggerInterface ) {
|
|
throw new \InvalidArgumentException(
|
|
'$options[\'logger\'] must be an instance of LoggerInterface'
|
|
);
|
|
}
|
|
$this->setLogger( $options['logger'] );
|
|
} else {
|
|
$this->setLogger( \MediaWiki\Logger\LoggerFactory::getInstance( 'session' ) );
|
|
}
|
|
|
|
if ( isset( $options['hookContainer'] ) ) {
|
|
$this->setHookContainer( $options['hookContainer'] );
|
|
} else {
|
|
$this->setHookContainer( MediaWikiServices::getInstance()->getHookContainer() );
|
|
}
|
|
|
|
if ( isset( $options['store'] ) ) {
|
|
if ( !$options['store'] instanceof BagOStuff ) {
|
|
throw new \InvalidArgumentException(
|
|
'$options[\'store\'] must be an instance of BagOStuff'
|
|
);
|
|
}
|
|
$store = $options['store'];
|
|
} else {
|
|
$store = \ObjectCache::getInstance( $this->config->get( 'SessionCacheType' ) );
|
|
}
|
|
|
|
$this->logger->debug( 'SessionManager using store ' . get_class( $store ) );
|
|
$this->store = $store instanceof CachedBagOStuff ? $store : new CachedBagOStuff( $store );
|
|
$this->userNameUtils = MediawikiServices::getInstance()->getUserNameUtils();
|
|
|
|
register_shutdown_function( [ $this, 'shutdown' ] );
|
|
}
|
|
|
|
public function setLogger( LoggerInterface $logger ) {
|
|
$this->logger = $logger;
|
|
}
|
|
|
|
/**
|
|
* @internal
|
|
* @param HookContainer $hookContainer
|
|
*/
|
|
public function setHookContainer( HookContainer $hookContainer ) {
|
|
$this->hookContainer = $hookContainer;
|
|
$this->hookRunner = new HookRunner( $hookContainer );
|
|
}
|
|
|
|
public function getSessionForRequest( WebRequest $request ) {
|
|
$info = $this->getSessionInfoForRequest( $request );
|
|
|
|
if ( !$info ) {
|
|
$session = $this->getEmptySession( $request );
|
|
} else {
|
|
$session = $this->getSessionFromInfo( $info, $request );
|
|
}
|
|
return $session;
|
|
}
|
|
|
|
public function getSessionById( $id, $create = false, WebRequest $request = null ) {
|
|
if ( !self::validateSessionId( $id ) ) {
|
|
throw new \InvalidArgumentException( 'Invalid session ID' );
|
|
}
|
|
if ( !$request ) {
|
|
$request = new FauxRequest;
|
|
}
|
|
|
|
$session = null;
|
|
$info = new SessionInfo( SessionInfo::MIN_PRIORITY, [ 'id' => $id, 'idIsSafe' => true ] );
|
|
|
|
// If we already have the backend loaded, use it directly
|
|
if ( isset( $this->allSessionBackends[$id] ) ) {
|
|
return $this->getSessionFromInfo( $info, $request );
|
|
}
|
|
|
|
// Test if the session is in storage, and if so try to load it.
|
|
$key = $this->store->makeKey( 'MWSession', $id );
|
|
if ( is_array( $this->store->get( $key ) ) ) {
|
|
$create = false; // If loading fails, don't bother creating because it probably will fail too.
|
|
if ( $this->loadSessionInfoFromStore( $info, $request ) ) {
|
|
$session = $this->getSessionFromInfo( $info, $request );
|
|
}
|
|
}
|
|
|
|
if ( $create && $session === null ) {
|
|
$ex = null;
|
|
try {
|
|
$session = $this->getEmptySessionInternal( $request, $id );
|
|
} catch ( \Exception $ex ) {
|
|
$this->logger->error( 'Failed to create empty session: {exception}',
|
|
[
|
|
'method' => __METHOD__,
|
|
'exception' => $ex,
|
|
] );
|
|
$session = null;
|
|
}
|
|
}
|
|
|
|
return $session;
|
|
}
|
|
|
|
public function getEmptySession( WebRequest $request = null ) {
|
|
return $this->getEmptySessionInternal( $request );
|
|
}
|
|
|
|
/**
|
|
* @see SessionManagerInterface::getEmptySession
|
|
* @param WebRequest|null $request
|
|
* @param string|null $id ID to force on the new session
|
|
* @return Session
|
|
*/
|
|
private function getEmptySessionInternal( WebRequest $request = null, $id = null ) {
|
|
if ( $id !== null ) {
|
|
if ( !self::validateSessionId( $id ) ) {
|
|
throw new \InvalidArgumentException( 'Invalid session ID' );
|
|
}
|
|
|
|
$key = $this->store->makeKey( 'MWSession', $id );
|
|
if ( is_array( $this->store->get( $key ) ) ) {
|
|
throw new \InvalidArgumentException( 'Session ID already exists' );
|
|
}
|
|
}
|
|
if ( !$request ) {
|
|
$request = new FauxRequest;
|
|
}
|
|
|
|
$infos = [];
|
|
foreach ( $this->getProviders() as $provider ) {
|
|
$info = $provider->newSessionInfo( $id );
|
|
if ( !$info ) {
|
|
continue;
|
|
}
|
|
if ( $info->getProvider() !== $provider ) {
|
|
throw new \UnexpectedValueException(
|
|
"$provider returned an empty session info for a different provider: $info"
|
|
);
|
|
}
|
|
if ( $id !== null && $info->getId() !== $id ) {
|
|
throw new \UnexpectedValueException(
|
|
"$provider returned empty session info with a wrong id: " .
|
|
$info->getId() . ' != ' . $id
|
|
);
|
|
}
|
|
if ( !$info->isIdSafe() ) {
|
|
throw new \UnexpectedValueException(
|
|
"$provider returned empty session info with id flagged unsafe"
|
|
);
|
|
}
|
|
$compare = $infos ? SessionInfo::compare( $infos[0], $info ) : -1;
|
|
if ( $compare > 0 ) {
|
|
continue;
|
|
}
|
|
if ( $compare === 0 ) {
|
|
$infos[] = $info;
|
|
} else {
|
|
$infos = [ $info ];
|
|
}
|
|
}
|
|
|
|
// Make sure there's exactly one
|
|
if ( count( $infos ) > 1 ) {
|
|
throw new \UnexpectedValueException(
|
|
'Multiple empty sessions tied for top priority: ' . implode( ', ', $infos )
|
|
);
|
|
} elseif ( count( $infos ) < 1 ) {
|
|
throw new \UnexpectedValueException( 'No provider could provide an empty session!' );
|
|
}
|
|
|
|
return $this->getSessionFromInfo( $infos[0], $request );
|
|
}
|
|
|
|
public function invalidateSessionsForUser( User $user ) {
|
|
$user->setToken();
|
|
$user->saveSettings();
|
|
|
|
foreach ( $this->getProviders() as $provider ) {
|
|
$provider->invalidateSessionsForUser( $user );
|
|
}
|
|
}
|
|
|
|
public function getVaryHeaders() {
|
|
// @codeCoverageIgnoreStart
|
|
if ( defined( 'MW_NO_SESSION' ) && MW_NO_SESSION !== 'warn' ) {
|
|
return [];
|
|
}
|
|
// @codeCoverageIgnoreEnd
|
|
if ( $this->varyHeaders === null ) {
|
|
$headers = [];
|
|
foreach ( $this->getProviders() as $provider ) {
|
|
foreach ( $provider->getVaryHeaders() as $header => $options ) {
|
|
# Note that the $options value returned has been deprecated
|
|
# and is ignored.
|
|
$headers[$header] = null;
|
|
}
|
|
}
|
|
$this->varyHeaders = $headers;
|
|
}
|
|
return $this->varyHeaders;
|
|
}
|
|
|
|
public function getVaryCookies() {
|
|
// @codeCoverageIgnoreStart
|
|
if ( defined( 'MW_NO_SESSION' ) && MW_NO_SESSION !== 'warn' ) {
|
|
return [];
|
|
}
|
|
// @codeCoverageIgnoreEnd
|
|
if ( $this->varyCookies === null ) {
|
|
$cookies = [];
|
|
foreach ( $this->getProviders() as $provider ) {
|
|
$cookies = array_merge( $cookies, $provider->getVaryCookies() );
|
|
}
|
|
$this->varyCookies = array_values( array_unique( $cookies ) );
|
|
}
|
|
return $this->varyCookies;
|
|
}
|
|
|
|
/**
|
|
* Validate a session ID
|
|
* @param string $id
|
|
* @return bool
|
|
*/
|
|
public static function validateSessionId( $id ) {
|
|
return is_string( $id ) && preg_match( '/^[a-zA-Z0-9_-]{32,}$/', $id );
|
|
}
|
|
|
|
/***************************************************************************/
|
|
// region Internal methods
|
|
/** @name Internal methods */
|
|
|
|
/**
|
|
* 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).
|
|
*
|
|
* @internal For use from \User::newSystemUser only
|
|
* @param string $username
|
|
*/
|
|
public function preventSessionsForUser( $username ) {
|
|
$this->preventUsers[$username] = true;
|
|
|
|
// Instruct the session providers to kill any other sessions too.
|
|
foreach ( $this->getProviders() as $provider ) {
|
|
$provider->preventSessionsForUser( $username );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Test if a user is prevented
|
|
* @internal For use from SessionBackend only
|
|
* @param string $username
|
|
* @return bool
|
|
*/
|
|
public function isUserSessionPrevented( $username ) {
|
|
return !empty( $this->preventUsers[$username] );
|
|
}
|
|
|
|
/**
|
|
* Get the available SessionProviders
|
|
* @return SessionProvider[]
|
|
*/
|
|
protected function getProviders() {
|
|
if ( $this->sessionProviders === null ) {
|
|
$this->sessionProviders = [];
|
|
foreach ( $this->config->get( 'SessionProviders' ) as $spec ) {
|
|
/** @var SessionProvider */
|
|
$provider = ObjectFactory::getObjectFromSpec( $spec );
|
|
$provider->init(
|
|
$this->logger,
|
|
$this->config,
|
|
$this,
|
|
$this->hookContainer,
|
|
$this->userNameUtils
|
|
);
|
|
if ( isset( $this->sessionProviders[(string)$provider] ) ) {
|
|
// @phan-suppress-next-line PhanTypeSuspiciousStringExpression
|
|
throw new \UnexpectedValueException( "Duplicate provider name \"$provider\"" );
|
|
}
|
|
$this->sessionProviders[(string)$provider] = $provider;
|
|
}
|
|
}
|
|
return $this->sessionProviders;
|
|
}
|
|
|
|
/**
|
|
* 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().
|
|
*
|
|
* @param string $name
|
|
* @return SessionProvider|null
|
|
*/
|
|
public function getProvider( $name ) {
|
|
$providers = $this->getProviders();
|
|
return $providers[$name] ?? null;
|
|
}
|
|
|
|
/**
|
|
* Save all active sessions on shutdown
|
|
* @internal For internal use with register_shutdown_function()
|
|
*/
|
|
public function shutdown() {
|
|
if ( $this->allSessionBackends ) {
|
|
$this->logger->debug( 'Saving all sessions on shutdown' );
|
|
if ( session_id() !== '' ) {
|
|
// @codeCoverageIgnoreStart
|
|
session_write_close();
|
|
}
|
|
// @codeCoverageIgnoreEnd
|
|
foreach ( $this->allSessionBackends as $backend ) {
|
|
$backend->shutdown();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fetch the SessionInfo(s) for a request
|
|
* @param WebRequest $request
|
|
* @return SessionInfo|null
|
|
*/
|
|
private function getSessionInfoForRequest( WebRequest $request ) {
|
|
// Call all providers to fetch "the" session
|
|
$infos = [];
|
|
foreach ( $this->getProviders() as $provider ) {
|
|
$info = $provider->provideSessionInfo( $request );
|
|
if ( !$info ) {
|
|
continue;
|
|
}
|
|
if ( $info->getProvider() !== $provider ) {
|
|
throw new \UnexpectedValueException(
|
|
"$provider returned session info for a different provider: $info"
|
|
);
|
|
}
|
|
$infos[] = $info;
|
|
}
|
|
|
|
// Sort the SessionInfos. Then find the first one that can be
|
|
// successfully loaded, and then all the ones after it with the same
|
|
// priority.
|
|
usort( $infos, [ SessionInfo::class, 'compare' ] );
|
|
$retInfos = [];
|
|
while ( $infos ) {
|
|
$info = array_pop( $infos );
|
|
if ( $this->loadSessionInfoFromStore( $info, $request ) ) {
|
|
$retInfos[] = $info;
|
|
while ( $infos ) {
|
|
/** @var SessionInfo $info */
|
|
$info = array_pop( $infos );
|
|
if ( SessionInfo::compare( $retInfos[0], $info ) ) {
|
|
// We hit a lower priority, stop checking.
|
|
break;
|
|
}
|
|
if ( $this->loadSessionInfoFromStore( $info, $request ) ) {
|
|
// This is going to error out below, but we want to
|
|
// provide a complete list.
|
|
$retInfos[] = $info;
|
|
} else {
|
|
// Session load failed, so unpersist it from this request
|
|
$this->logUnpersist( $info, $request );
|
|
$info->getProvider()->unpersistSession( $request );
|
|
}
|
|
}
|
|
} else {
|
|
// Session load failed, so unpersist it from this request
|
|
$this->logUnpersist( $info, $request );
|
|
$info->getProvider()->unpersistSession( $request );
|
|
}
|
|
}
|
|
|
|
if ( count( $retInfos ) > 1 ) {
|
|
throw new SessionOverflowException(
|
|
$retInfos,
|
|
'Multiple sessions for this request tied for top priority: ' . implode( ', ', $retInfos )
|
|
);
|
|
}
|
|
|
|
return $retInfos ? $retInfos[0] : null;
|
|
}
|
|
|
|
/**
|
|
* Load and verify the session info against the store
|
|
*
|
|
* @param SessionInfo &$info Will likely be replaced with an updated SessionInfo instance
|
|
* @param WebRequest $request
|
|
* @return bool Whether the session info matches the stored data (if any)
|
|
*/
|
|
private function loadSessionInfoFromStore( SessionInfo &$info, WebRequest $request ) {
|
|
$key = $this->store->makeKey( 'MWSession', $info->getId() );
|
|
$blob = $this->store->get( $key );
|
|
|
|
// If we got data from the store and the SessionInfo says to force use,
|
|
// "fail" means to delete the data from the store and retry. Otherwise,
|
|
// "fail" is just return false.
|
|
if ( $info->forceUse() && $blob !== false ) {
|
|
$failHandler = function () use ( $key, &$info, $request ) {
|
|
$this->store->delete( $key );
|
|
return $this->loadSessionInfoFromStore( $info, $request );
|
|
};
|
|
} else {
|
|
$failHandler = static function () {
|
|
return false;
|
|
};
|
|
}
|
|
|
|
$newParams = [];
|
|
|
|
if ( $blob !== false ) {
|
|
// Sanity check: blob must be an array, if it's saved at all
|
|
if ( !is_array( $blob ) ) {
|
|
$this->logger->warning( 'Session "{session}": Bad data', [
|
|
'session' => $info->__toString(),
|
|
] );
|
|
$this->store->delete( $key );
|
|
return $failHandler();
|
|
}
|
|
|
|
// Sanity check: blob has data and metadata arrays
|
|
if ( !isset( $blob['data'] ) || !is_array( $blob['data'] ) ||
|
|
!isset( $blob['metadata'] ) || !is_array( $blob['metadata'] )
|
|
) {
|
|
$this->logger->warning( 'Session "{session}": Bad data structure', [
|
|
'session' => $info->__toString(),
|
|
] );
|
|
$this->store->delete( $key );
|
|
return $failHandler();
|
|
}
|
|
|
|
$data = $blob['data'];
|
|
$metadata = $blob['metadata'];
|
|
|
|
// Sanity check: metadata must be an array and must contain certain
|
|
// keys, if it's saved at all
|
|
if ( !array_key_exists( 'userId', $metadata ) ||
|
|
!array_key_exists( 'userName', $metadata ) ||
|
|
!array_key_exists( 'userToken', $metadata ) ||
|
|
!array_key_exists( 'provider', $metadata )
|
|
) {
|
|
$this->logger->warning( 'Session "{session}": Bad metadata', [
|
|
'session' => $info->__toString(),
|
|
] );
|
|
$this->store->delete( $key );
|
|
return $failHandler();
|
|
}
|
|
|
|
// First, load the provider from metadata, or validate it against the metadata.
|
|
$provider = $info->getProvider();
|
|
if ( $provider === null ) {
|
|
$newParams['provider'] = $provider = $this->getProvider( $metadata['provider'] );
|
|
if ( !$provider ) {
|
|
$this->logger->warning(
|
|
'Session "{session}": Unknown provider ' . $metadata['provider'],
|
|
[
|
|
'session' => $info->__toString(),
|
|
]
|
|
);
|
|
$this->store->delete( $key );
|
|
return $failHandler();
|
|
}
|
|
} elseif ( $metadata['provider'] !== (string)$provider ) {
|
|
$this->logger->warning( 'Session "{session}": Wrong provider ' .
|
|
$metadata['provider'] . ' !== ' . $provider,
|
|
[
|
|
'session' => $info->__toString(),
|
|
] );
|
|
return $failHandler();
|
|
}
|
|
|
|
// Load provider metadata from metadata, or validate it against the metadata
|
|
$providerMetadata = $info->getProviderMetadata();
|
|
if ( isset( $metadata['providerMetadata'] ) ) {
|
|
if ( $providerMetadata === null ) {
|
|
$newParams['metadata'] = $metadata['providerMetadata'];
|
|
} else {
|
|
try {
|
|
$newProviderMetadata = $provider->mergeMetadata(
|
|
$metadata['providerMetadata'], $providerMetadata
|
|
);
|
|
if ( $newProviderMetadata !== $providerMetadata ) {
|
|
$newParams['metadata'] = $newProviderMetadata;
|
|
}
|
|
} catch ( MetadataMergeException $ex ) {
|
|
$this->logger->warning(
|
|
'Session "{session}": Metadata merge failed: {exception}',
|
|
[
|
|
'session' => $info->__toString(),
|
|
'exception' => $ex,
|
|
] + $ex->getContext()
|
|
);
|
|
return $failHandler();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Next, load the user from metadata, or validate it against the metadata.
|
|
$userInfo = $info->getUserInfo();
|
|
if ( !$userInfo ) {
|
|
// For loading, id is preferred to name.
|
|
try {
|
|
if ( $metadata['userId'] ) {
|
|
$userInfo = UserInfo::newFromId( $metadata['userId'] );
|
|
} elseif ( $metadata['userName'] !== null ) { // Shouldn't happen, but just in case
|
|
$userInfo = UserInfo::newFromName( $metadata['userName'] );
|
|
} else {
|
|
$userInfo = UserInfo::newAnonymous();
|
|
}
|
|
} catch ( \InvalidArgumentException $ex ) {
|
|
$this->logger->error( 'Session "{session}": {exception}', [
|
|
'session' => $info->__toString(),
|
|
'exception' => $ex,
|
|
] );
|
|
return $failHandler();
|
|
}
|
|
$newParams['userInfo'] = $userInfo;
|
|
} else {
|
|
// User validation passes if user ID matches, or if there
|
|
// is no saved ID and the names match.
|
|
if ( $metadata['userId'] ) {
|
|
if ( $metadata['userId'] !== $userInfo->getId() ) {
|
|
$this->logger->warning(
|
|
'Session "{session}": User ID mismatch, {uid_a} !== {uid_b}',
|
|
[
|
|
'session' => $info->__toString(),
|
|
'uid_a' => $metadata['userId'],
|
|
'uid_b' => $userInfo->getId(),
|
|
] );
|
|
return $failHandler();
|
|
}
|
|
|
|
// If the user was renamed, probably best to fail here.
|
|
if ( $metadata['userName'] !== null &&
|
|
$userInfo->getName() !== $metadata['userName']
|
|
) {
|
|
$this->logger->warning(
|
|
'Session "{session}": User ID matched but name didn\'t (rename?), {uname_a} !== {uname_b}',
|
|
[
|
|
'session' => $info->__toString(),
|
|
'uname_a' => $metadata['userName'],
|
|
'uname_b' => $userInfo->getName(),
|
|
] );
|
|
return $failHandler();
|
|
}
|
|
|
|
} elseif ( $metadata['userName'] !== null ) { // Shouldn't happen, but just in case
|
|
if ( $metadata['userName'] !== $userInfo->getName() ) {
|
|
$this->logger->warning(
|
|
'Session "{session}": User name mismatch, {uname_a} !== {uname_b}',
|
|
[
|
|
'session' => $info->__toString(),
|
|
'uname_a' => $metadata['userName'],
|
|
'uname_b' => $userInfo->getName(),
|
|
] );
|
|
return $failHandler();
|
|
}
|
|
} elseif ( !$userInfo->isAnon() ) {
|
|
// Metadata specifies an anonymous user, but the passed-in
|
|
// user isn't anonymous.
|
|
$this->logger->warning(
|
|
'Session "{session}": Metadata has an anonymous user, but a non-anon user was provided',
|
|
[
|
|
'session' => $info->__toString(),
|
|
] );
|
|
return $failHandler();
|
|
}
|
|
}
|
|
|
|
// And if we have a token in the metadata, it must match the loaded/provided user.
|
|
if ( $metadata['userToken'] !== null &&
|
|
$userInfo->getToken() !== $metadata['userToken']
|
|
) {
|
|
$this->logger->warning( 'Session "{session}": User token mismatch', [
|
|
'session' => $info->__toString(),
|
|
] );
|
|
return $failHandler();
|
|
}
|
|
if ( !$userInfo->isVerified() ) {
|
|
$newParams['userInfo'] = $userInfo->verified();
|
|
}
|
|
|
|
if ( !empty( $metadata['remember'] ) && !$info->wasRemembered() ) {
|
|
$newParams['remembered'] = true;
|
|
}
|
|
if ( !empty( $metadata['forceHTTPS'] ) && !$info->forceHTTPS() ) {
|
|
$newParams['forceHTTPS'] = true;
|
|
}
|
|
if ( !empty( $metadata['persisted'] ) && !$info->wasPersisted() ) {
|
|
$newParams['persisted'] = true;
|
|
}
|
|
|
|
if ( !$info->isIdSafe() ) {
|
|
$newParams['idIsSafe'] = true;
|
|
}
|
|
} else {
|
|
// No metadata, so we can't load the provider if one wasn't given.
|
|
if ( $info->getProvider() === null ) {
|
|
$this->logger->warning(
|
|
'Session "{session}": Null provider and no metadata',
|
|
[
|
|
'session' => $info->__toString(),
|
|
] );
|
|
return $failHandler();
|
|
}
|
|
|
|
// If no user was provided and no metadata, it must be anon.
|
|
if ( !$info->getUserInfo() ) {
|
|
if ( $info->getProvider()->canChangeUser() ) {
|
|
$newParams['userInfo'] = UserInfo::newAnonymous();
|
|
} else {
|
|
$this->logger->info(
|
|
'Session "{session}": No user provided and provider cannot set user',
|
|
[
|
|
'session' => $info->__toString(),
|
|
] );
|
|
return $failHandler();
|
|
}
|
|
} elseif ( !$info->getUserInfo()->isVerified() ) {
|
|
// probably just a session timeout
|
|
$this->logger->info(
|
|
'Session "{session}": Unverified user provided and no metadata to auth it',
|
|
[
|
|
'session' => $info->__toString(),
|
|
] );
|
|
return $failHandler();
|
|
}
|
|
|
|
$data = false;
|
|
$metadata = false;
|
|
|
|
if ( !$info->getProvider()->persistsSessionId() && !$info->isIdSafe() ) {
|
|
// The ID doesn't come from the user, so it should be safe
|
|
// (and if not, nothing we can do about it anyway)
|
|
$newParams['idIsSafe'] = true;
|
|
}
|
|
}
|
|
|
|
// Construct the replacement SessionInfo, if necessary
|
|
if ( $newParams ) {
|
|
$newParams['copyFrom'] = $info;
|
|
$info = new SessionInfo( $info->getPriority(), $newParams );
|
|
}
|
|
|
|
// Allow the provider to check the loaded SessionInfo
|
|
$providerMetadata = $info->getProviderMetadata();
|
|
if ( !$info->getProvider()->refreshSessionInfo( $info, $request, $providerMetadata ) ) {
|
|
return $failHandler();
|
|
}
|
|
if ( $providerMetadata !== $info->getProviderMetadata() ) {
|
|
$info = new SessionInfo( $info->getPriority(), [
|
|
'metadata' => $providerMetadata,
|
|
'copyFrom' => $info,
|
|
] );
|
|
}
|
|
|
|
// Give hooks a chance to abort. Combined with the SessionMetadata
|
|
// hook, this can allow for tying a session to an IP address or the
|
|
// like.
|
|
$reason = 'Hook aborted';
|
|
if ( !$this->hookRunner->onSessionCheckInfo(
|
|
$reason, $info, $request, $metadata, $data )
|
|
) {
|
|
$this->logger->warning( 'Session "{session}": ' . $reason, [
|
|
'session' => $info->__toString(),
|
|
] );
|
|
return $failHandler();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Create a Session corresponding to the passed SessionInfo
|
|
* @internal For use by a SessionProvider that needs to specially create its
|
|
* own Session. Most session providers won't need this.
|
|
* @param SessionInfo $info
|
|
* @param WebRequest $request
|
|
* @return Session
|
|
*/
|
|
public function getSessionFromInfo( SessionInfo $info, WebRequest $request ) {
|
|
// @codeCoverageIgnoreStart
|
|
if ( defined( 'MW_NO_SESSION' ) ) {
|
|
if ( MW_NO_SESSION === 'warn' ) {
|
|
// Undocumented safety case for converting existing entry points
|
|
$this->logger->error( 'Sessions are supposed to be disabled for this entry point', [
|
|
'exception' => new \BadMethodCallException( 'Sessions are disabled for this entry point' ),
|
|
] );
|
|
} else {
|
|
throw new \BadMethodCallException( 'Sessions are disabled for this entry point' );
|
|
}
|
|
}
|
|
// @codeCoverageIgnoreEnd
|
|
|
|
$id = $info->getId();
|
|
|
|
if ( !isset( $this->allSessionBackends[$id] ) ) {
|
|
if ( !isset( $this->allSessionIds[$id] ) ) {
|
|
$this->allSessionIds[$id] = new SessionId( $id );
|
|
}
|
|
$backend = new SessionBackend(
|
|
$this->allSessionIds[$id],
|
|
$info,
|
|
$this->store,
|
|
$this->logger,
|
|
$this->hookContainer,
|
|
$this->config->get( 'ObjectCacheSessionExpiry' )
|
|
);
|
|
$this->allSessionBackends[$id] = $backend;
|
|
$delay = $backend->delaySave();
|
|
} else {
|
|
$backend = $this->allSessionBackends[$id];
|
|
$delay = $backend->delaySave();
|
|
if ( $info->wasPersisted() ) {
|
|
$backend->persist();
|
|
}
|
|
if ( $info->wasRemembered() ) {
|
|
$backend->setRememberUser( true );
|
|
}
|
|
}
|
|
|
|
$request->setSessionId( $backend->getSessionId() );
|
|
$session = $backend->getSession( $request );
|
|
|
|
if ( !$info->isIdSafe() ) {
|
|
$session->resetId();
|
|
}
|
|
|
|
\Wikimedia\ScopedCallback::consume( $delay );
|
|
return $session;
|
|
}
|
|
|
|
/**
|
|
* Deregister a SessionBackend
|
|
* @internal For use from \MediaWiki\Session\SessionBackend only
|
|
* @param SessionBackend $backend
|
|
*/
|
|
public function deregisterSessionBackend( SessionBackend $backend ) {
|
|
$id = $backend->getId();
|
|
if ( !isset( $this->allSessionBackends[$id] ) || !isset( $this->allSessionIds[$id] ) ||
|
|
$this->allSessionBackends[$id] !== $backend ||
|
|
$this->allSessionIds[$id] !== $backend->getSessionId()
|
|
) {
|
|
throw new \InvalidArgumentException( 'Backend was not registered with this SessionManager' );
|
|
}
|
|
|
|
unset( $this->allSessionBackends[$id] );
|
|
// Explicitly do not unset $this->allSessionIds[$id]
|
|
}
|
|
|
|
/**
|
|
* Change a SessionBackend's ID
|
|
* @internal For use from \MediaWiki\Session\SessionBackend only
|
|
* @param SessionBackend $backend
|
|
*/
|
|
public function changeBackendId( SessionBackend $backend ) {
|
|
$sessionId = $backend->getSessionId();
|
|
$oldId = (string)$sessionId;
|
|
if ( !isset( $this->allSessionBackends[$oldId] ) || !isset( $this->allSessionIds[$oldId] ) ||
|
|
$this->allSessionBackends[$oldId] !== $backend ||
|
|
$this->allSessionIds[$oldId] !== $sessionId
|
|
) {
|
|
throw new \InvalidArgumentException( 'Backend was not registered with this SessionManager' );
|
|
}
|
|
|
|
$newId = $this->generateSessionId();
|
|
|
|
unset( $this->allSessionBackends[$oldId], $this->allSessionIds[$oldId] );
|
|
$sessionId->setId( $newId );
|
|
$this->allSessionBackends[$newId] = $backend;
|
|
$this->allSessionIds[$newId] = $sessionId;
|
|
}
|
|
|
|
/**
|
|
* Generate a new random session ID
|
|
* @return string
|
|
*/
|
|
public function generateSessionId() {
|
|
do {
|
|
$id = \Wikimedia\base_convert( \MWCryptRand::generateHex( 40 ), 16, 32, 32 );
|
|
$key = $this->store->makeKey( 'MWSession', $id );
|
|
} while ( isset( $this->allSessionIds[$id] ) || is_array( $this->store->get( $key ) ) );
|
|
return $id;
|
|
}
|
|
|
|
/**
|
|
* Call setters on a PHPSessionHandler
|
|
* @internal Use PhpSessionHandler::install()
|
|
* @param PHPSessionHandler $handler
|
|
*/
|
|
public function setupPHPSessionHandler( PHPSessionHandler $handler ) {
|
|
$handler->setManager( $this, $this->store, $this->logger );
|
|
}
|
|
|
|
/**
|
|
* Reset the internal caching for unit testing
|
|
* @note Unit tests only
|
|
* @internal
|
|
*/
|
|
public static function resetCache() {
|
|
if ( !defined( 'MW_PHPUNIT_TEST' ) && !defined( 'MW_PARSER_TEST' ) ) {
|
|
// @codeCoverageIgnoreStart
|
|
throw new MWException( __METHOD__ . ' may only be called from unit tests!' );
|
|
// @codeCoverageIgnoreEnd
|
|
}
|
|
|
|
self::$globalSession = null;
|
|
self::$globalSessionRequest = null;
|
|
}
|
|
|
|
private function logUnpersist( SessionInfo $info, WebRequest $request ) {
|
|
$logData = [
|
|
'id' => $info->getId(),
|
|
'provider' => get_class( $info->getProvider() ),
|
|
'user' => '<anon>',
|
|
'clientip' => $request->getIP(),
|
|
'userAgent' => $request->getHeader( 'user-agent' ),
|
|
];
|
|
if ( $info->getUserInfo() ) {
|
|
if ( !$info->getUserInfo()->isAnon() ) {
|
|
$logData['user'] = $info->getUserInfo()->getName();
|
|
}
|
|
$logData['userVerified'] = $info->getUserInfo()->isVerified();
|
|
}
|
|
$this->logger->info( 'Failed to load session, unpersisting', $logData );
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
* @private For use in Setup.php only
|
|
* @param Session|null $session For testing only
|
|
*/
|
|
public function logPotentialSessionLeakage( Session $session = null ) {
|
|
$proxyLookup = MediaWikiServices::getInstance()->getProxyLookup();
|
|
$session = $session ?: self::getGlobalSession();
|
|
$suspiciousIpExpiry = $this->config->get( 'SuspiciousIpExpiry' );
|
|
|
|
if ( $suspiciousIpExpiry === false
|
|
// We only care about logged-in users.
|
|
|| !$session->isPersistent() || $session->getUser()->isAnon()
|
|
// We only care about cookie-based sessions.
|
|
|| !( $session->getProvider() instanceof CookieSessionProvider )
|
|
) {
|
|
return;
|
|
}
|
|
try {
|
|
$ip = $session->getRequest()->getIP();
|
|
} catch ( \MWException $e ) {
|
|
return;
|
|
}
|
|
if ( $ip === '127.0.0.1' || $proxyLookup->isConfiguredProxy( $ip ) ) {
|
|
return;
|
|
}
|
|
$mwuser = $session->getRequest()->getCookie( 'mwuser-sessionId' );
|
|
$now = \MWTimestamp::now( TS_UNIX );
|
|
|
|
// Record (and possibly log) that the IP is using the current session.
|
|
// Don't touch the stored data unless we are changing the IP or re-adding an expired one.
|
|
// This is slightly inaccurate (when an existing IP is seen again, the expiry is not
|
|
// extended) but that shouldn't make much difference and limits the session write frequency.
|
|
$data = $session->get( 'SessionManager-logPotentialSessionLeakage', [] )
|
|
+ [ 'ip' => null, 'mwuser' => null, 'timestamp' => 0 ];
|
|
// Ignore old IP records; users change networks over time. mwuser is a session cookie and the
|
|
// SessionManager session id is also a session cookie so there shouldn't be any problem there.
|
|
if ( $data['ip'] &&
|
|
( $now - $data['timestamp'] > $suspiciousIpExpiry )
|
|
) {
|
|
$data['ip'] = $data['timestamp'] = null;
|
|
}
|
|
|
|
if ( $data['ip'] !== $ip || $data['mwuser'] !== $mwuser ) {
|
|
$session->set( 'SessionManager-logPotentialSessionLeakage',
|
|
[ 'ip' => $ip, 'mwuser' => $mwuser, 'timestamp' => $now ] );
|
|
}
|
|
|
|
$ipChanged = ( $data['ip'] && $data['ip'] !== $ip );
|
|
$mwuserChanged = ( $data['mwuser'] && $data['mwuser'] !== $mwuser );
|
|
$logLevel = $message = null;
|
|
$logData = [];
|
|
// IPs change all the time. mwuser is a session cookie that's only set when missing,
|
|
// so it should only change when the browser session ends which ends the SessionManager
|
|
// session as well. Unless we are dealing with a very weird client, such as a bot that
|
|
//manipulates cookies and can run Javascript, it should not change.
|
|
// IP and mwuser changing at the same time would be *very* suspicious.
|
|
if ( $ipChanged ) {
|
|
$logLevel = LogLevel::INFO;
|
|
$message = 'IP change within the same session';
|
|
$logData += [
|
|
'oldIp' => $data['ip'],
|
|
'oldIpRecorded' => $data['timestamp'],
|
|
];
|
|
}
|
|
if ( $mwuserChanged ) {
|
|
$logLevel = LogLevel::NOTICE;
|
|
$message = 'mwuser change within the same session';
|
|
$logData += [
|
|
'oldMwuser' => $data['mwuser'],
|
|
'newMwuser' => $mwuser,
|
|
];
|
|
}
|
|
if ( $ipChanged && $mwuserChanged ) {
|
|
$logLevel = LogLevel::WARNING;
|
|
$message = 'IP and mwuser change within the same session';
|
|
}
|
|
if ( $logLevel ) {
|
|
$logData += [
|
|
'session' => $session->getId(),
|
|
'user' => $session->getUser()->getName(),
|
|
'clientip' => $ip,
|
|
'userAgent' => $session->getRequest()->getHeader( 'user-agent' ),
|
|
];
|
|
$logger = \MediaWiki\Logger\LoggerFactory::getInstance( 'session-ip' );
|
|
$logger->log( $logLevel, $message, $logData );
|
|
}
|
|
}
|
|
|
|
// endregion -- end of Internal methods
|
|
|
|
}
|