/**
* Returns a MemcacheAdapter instance.
*
* @return MemcacheAdapter
*/
public static function getInstance()
{
if (self::$instance === null) {
self::$instance = new MemcacheAdapter();
}
return self::$instance;
}
/**
* @see SessionFactory::create()
*/
public function create()
{
// get spider information
$spider = $this->isSpider(UserUtil::getUserAgent());
if ($spider) {
if (($session = $this->getExistingSpiderSession($spider['spiderID'])) !== null) {
if (!$session->isCorrupt()) {
return $session;
}
}
}
// create new session hash
$sessionID = StringUtil::getRandomID();
// check cookies for userID & password
require_once WCF_DIR . 'lib/system/auth/UserAuth.class.php';
$user = UserAuth::getInstance()->loginAutomatically(true, $this->userClassName);
if ($user === null) {
// no valid user found
// create guest user
$user = new $this->guestClassName();
}
// update user session
$user->update();
if ($user->userID != 0) {
// user is no guest
// delete all other sessions of this user
Session::deleteSessions($user->userID, true, false);
}
$requestMethod = !empty($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : '';
// insert session into database
$sql = "INSERT INTO \twcf" . WCF_N . "_session\n\t\t\t\t\t(sessionID, packageID, userID, ipAddress, userAgent,\n\t\t\t\t\tlastActivityTime, requestURI, requestMethod,\n\t\t\t\t\tusername" . ($spider ? ", spiderID" : "") . ")\n\t\t\tVALUES\t\t('" . $sessionID . "',\n\t\t\t\t\t" . PACKAGE_ID . ",\n\t\t\t\t\t" . $user->userID . ",\n\t\t\t\t\t'" . escapeString(UserUtil::getIpAddress()) . "',\n\t\t\t\t\t'" . escapeString(UserUtil::getUserAgent()) . "',\n\t\t\t\t\t" . TIME_NOW . ",\n\t\t\t\t\t'" . escapeString(UserUtil::getRequestURI()) . "',\n\t\t\t\t\t'" . escapeString($requestMethod) . "',\n\t\t\t\t\t'" . ($spider ? escapeString($spider['spiderName']) : escapeString($user->username)) . "'\n\t\t\t\t\t" . ($spider ? ", " . $spider['spiderID'] : "") . ")";
WCF::getDB()->sendQuery($sql);
// save user data
$serializedUserData = '';
if (ENABLE_SESSION_DATA_CACHE && get_class(WCF::getCache()->getCacheSource()) == 'MemcacheCacheSource') {
require_once WCF_DIR . 'lib/system/cache/source/MemcacheAdapter.class.php';
MemcacheAdapter::getInstance()->getMemcache()->set('session_userdata_-' . $sessionID, $user);
} else {
$serializedUserData = serialize($user);
try {
$sql = "INSERT INTO \twcf" . WCF_N . "_session_data\n\t\t\t\t\t\t\t(sessionID, userData)\n\t\t\t\t\tVALUES \t\t('" . $sessionID . "',\n\t\t\t\t\t\t\t'" . escapeString($serializedUserData) . "')";
WCF::getDB()->sendQuery($sql);
} catch (DatabaseException $e) {
// horizon update workaround
$sql = "UPDATE \twcf" . WCF_N . "_session\n\t\t\t\t\tSET\tuserData = '" . escapeString($serializedUserData) . "'\n\t\t\t\t\tWHERE\tsessionID = '" . $sessionID . "'";
WCF::getDB()->sendQuery($sql);
}
}
// return new session object
return new $this->sessionClassName(null, array('sessionID' => $sessionID, 'packageID' => PACKAGE_ID, 'userID' => $user->userID, 'ipAddress' => UserUtil::getIpAddress(), 'userAgent' => UserUtil::getUserAgent(), 'lastActivityTime' => TIME_NOW, 'requestURI' => UserUtil::getRequestURI(), 'requestMethod' => $requestMethod, 'userData' => $serializedUserData, 'sessionVariables' => '', 'username' => $spider ? $spider['spiderName'] : $user->username, 'spiderID' => $spider ? $spider['spiderID'] : 0, 'isNew' => true));
}
/**
* @see Page::readData()
*/
public function readData()
{
parent::readData();
// init cache data
$this->cacheData = array('source' => get_class(WCF::getCache()->getCacheSource()), 'version' => '', 'size' => 0, 'files' => 0);
// filesystem cache
if ($this->cacheData['source'] == 'DiskCacheSource') {
// set version
$this->cacheData['version'] = WCF_VERSION;
// get package dirs
$sql = "SELECT\t\tpackage.packageDir\n\t\t\t\tFROM\t\twcf" . WCF_N . "_package_dependency package_dependency\n\t\t\t\tLEFT JOIN\twcf" . WCF_N . "_package package\n\t\t\t\tON\t\t(package.packageID = package_dependency.dependency)\n\t\t\t\tWHERE\t\tpackage_dependency.packageID = " . PACKAGE_ID . "\n\t\t\t\t\t\tAND standalone = 1";
$result = WCF::getDB()->sendQuery($sql);
while ($row = WCF::getDB()->fetchArray($result)) {
$packageDir = FileUtil::getRealPath(WCF_DIR . $row['packageDir']);
$cacheDir = $packageDir . 'cache';
if (file_exists($cacheDir)) {
$this->caches[$cacheDir] = array();
// get files in cache directory
$files = glob($cacheDir . '/*.php');
// get additional file information
if (is_array($files)) {
foreach ($files as $file) {
$filesize = filesize($file);
$this->caches[$cacheDir][] = array('filename' => basename($file), 'filesize' => $filesize, 'mtime' => filemtime($file), 'perm' => substr(sprintf('%o', fileperms($file)), -3), 'writable' => is_writable($file));
$this->cacheData['files']++;
$this->cacheData['size'] += $filesize;
}
}
}
}
} else {
if ($this->cacheData['source'] == 'MemcacheCacheSource') {
// get version
require_once WCF_DIR . 'lib/system/cache/source/MemcacheAdapter.class.php';
$this->cacheData['version'] = MemcacheAdapter::getInstance()->getMemcache()->getVersion();
// get stats
$stats = MemcacheAdapter::getInstance()->getMemcache()->getStats();
$this->cacheData['files'] = $stats['curr_items'];
$this->cacheData['size'] = $stats['bytes'];
}
}
}
/**
* Creates a new MemcacheCacheSource object.
*/
public function __construct()
{
$this->adapter = MemcacheAdapter::getInstance();
}
/**
* Deletes the expired sessions.
*
* @param integer $timestamp
* @param boolean $userSession
* @param boolean $adminSession
*/
public static function deleteExpiredSessions($timestamp, $userSession = true, $adminSession = true)
{
// user sessions
if ($userSession) {
if (ENABLE_SESSION_DATA_CACHE && get_class(WCF::getCache()->getCacheSource()) == 'MemcacheCacheSource') {
require_once WCF_DIR . 'lib/system/cache/source/MemcacheAdapter.class.php';
$sql = "SELECT\tsessionID\n\t\t\t\t\tFROM\twcf" . WCF_N . "_session\n\t\t\t\t\tWHERE\tlastActivityTime < " . $timestamp;
$result = WCF::getDB()->sendQuery($sql);
while ($row = WCF::getDB()->fetchArray($result)) {
MemcacheAdapter::getInstance()->getMemcache()->delete('session_userdata_' . $row['sessionID']);
MemcacheAdapter::getInstance()->getMemcache()->delete('session_variables_' . $row['sessionID']);
}
$sql = "DELETE FROM\twcf" . WCF_N . "_session\n\t\t\t\t\tWHERE\t\tlastActivityTime < " . $timestamp;
WCF::getDB()->sendQuery($sql);
} else {
try {
$sql = "DELETE\t\tsession,\n\t\t\t\t\t\t\t\tsession_data\n\t\t\t\t\t\tFROM\t\twcf" . WCF_N . "_session session \n\t\t\t\t\t\tLEFT JOIN\twcf" . WCF_N . "_session_data session_data USING (sessionID)\n\t\t\t\t\t\tWHERE\t\tsession.lastActivityTime < " . $timestamp;
WCF::getDB()->sendQuery($sql);
} catch (DatabaseException $e) {
// horizon update workaround
$sql = "DELETE FROM\twcf" . WCF_N . "_session\n\t\t\t\t\t\tWHERE\t\tlastActivityTime < " . $timestamp;
WCF::getDB()->sendQuery($sql);
}
}
}
// admin sessions
if ($adminSession) {
if (ENABLE_SESSION_DATA_CACHE && get_class(WCF::getCache()->getCacheSource()) == 'MemcacheCacheSource') {
require_once WCF_DIR . 'lib/system/cache/source/MemcacheAdapter.class.php';
$sql = "SELECT\tsessionID\n\t\t\t\t\tFROM\twcf" . WCF_N . "_acp_session\n\t\t\t\t\tWHERE\tlastActivityTime < " . $timestamp;
$result = WCF::getDB()->sendQuery($sql);
while ($row = WCF::getDB()->fetchArray($result)) {
MemcacheAdapter::getInstance()->getMemcache()->delete('acp_session_userdata_' . $row['sessionID']);
MemcacheAdapter::getInstance()->getMemcache()->delete('acp_session_variables_' . $row['sessionID']);
}
$sql = "DELETE FROM\twcf" . WCF_N . "_acp_session\n\t\t\t\t\tWHERE\t\tlastActivityTime < " . $timestamp;
WCF::getDB()->sendQuery($sql);
} else {
try {
$sql = "DELETE\t\tsession,\n\t\t\t\t\t\t\t\tsession_data\n\t\t\t\t\t\tFROM\t\twcf" . WCF_N . "_acp_session session \n\t\t\t\t\t\tLEFT JOIN\twcf" . WCF_N . "_acp_session_data session_data USING (sessionID)\n\t\t\t\t\t\tWHERE\t\tsession.lastActivityTime < " . $timestamp;
WCF::getDB()->sendQuery($sql);
} catch (DatabaseException $e) {
// horizon update workaround
$sql = "DELETE FROM\twcf" . WCF_N . "_acp_session\n\t\t\t\t\t\tWHERE\t\tlastActivityTime < " . $timestamp;
WCF::getDB()->sendQuery($sql);
}
}
}
self::deleteOrphanedSessionData($userSession, $adminSession);
}
/**
* Creates a new session.
*
* Generates a new session hash, inserts the new session into database
* and returns the object of the created session.
*
* @return Session $session
*/
public function create()
{
// create new session hash
$sessionID = StringUtil::getRandomID();
// get user automatically
if (!defined('NO_IMPORTS')) {
require_once WCF_DIR . 'lib/system/auth/UserAuth.class.php';
}
$user = UserAuth::getInstance()->loginAutomatically();
// create user
if ($user === null) {
// no valid user found
// create guest user
$user = new $this->userClassName();
}
// update user session
$user->update();
// insert session into database
$requestMethod = !empty($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : '';
$sql = "INSERT INTO \twcf" . WCF_N . "_acp_session\n\t\t\t\t\t(sessionID, packageID, userID, ipAddress, userAgent, lastActivityTime, requestURI, requestMethod)\n\t\t\tVALUES \t\t('" . $sessionID . "',\n\t\t\t\t\t" . PACKAGE_ID . ",\n\t\t\t\t\t" . $user->userID . ",\n\t\t\t\t\t'" . escapeString(UserUtil::getIpAddress()) . "',\n\t\t\t\t\t'" . escapeString(UserUtil::getUserAgent()) . "',\n\t\t\t\t\t" . TIME_NOW . ",\n\t\t\t\t\t'" . escapeString(UserUtil::getRequestURI()) . "',\n\t\t\t\t\t'" . escapeString($requestMethod) . "')";
WCF::getDB()->sendQuery($sql);
// save user data
$serializedUserData = '';
if (ENABLE_SESSION_DATA_CACHE && get_class(WCF::getCache()->getCacheSource()) == 'MemcacheCacheSource') {
require_once WCF_DIR . 'lib/system/cache/source/MemcacheAdapter.class.php';
MemcacheAdapter::getInstance()->getMemcache()->set('acp_session_userdata_' . $sessionID, $user);
} else {
$serializedUserData = serialize($user);
try {
$sql = "INSERT INTO \twcf" . WCF_N . "_acp_session_data\n\t\t\t\t\t\t\t(sessionID, userData)\n\t\t\t\t\tVALUES \t\t('" . $sessionID . "',\n\t\t\t\t\t\t\t'" . escapeString($serializedUserData) . "')";
WCF::getDB()->sendQuery($sql);
} catch (DatabaseException $e) {
// horizon update workaround
$sql = "UPDATE \twcf" . WCF_N . "_acp_session\n\t\t\t\t\tSET\tuserData = '" . escapeString($serializedUserData) . "'\n\t\t\t\t\tWHERE\tsessionID = '" . $sessionID . "'";
WCF::getDB()->sendQuery($sql);
}
}
// return new session object
return new $this->sessionClassName(null, array('sessionID' => $sessionID, 'packageID' => PACKAGE_ID, 'ipAddress' => UserUtil::getIpAddress(), 'userAgent' => UserUtil::getUserAgent(), 'lastActivityTime' => TIME_NOW, 'requestURI' => UserUtil::getRequestURI(), 'requestMethod' => $requestMethod, 'userData' => $serializedUserData, 'sessionVariables' => '', 'userID' => $user->userID, 'isNew' => true));
}
