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src/Validator/ForwardedValidator.php 0000644 00000003157 15173537206 0013573 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Validator; use Joomla\Input\Input; use Joomla\Session\SessionInterface; use Joomla\Session\ValidatorInterface; /** * Interface for validating a part of the session * * @since 2.0.0 */ class ForwardedValidator implements ValidatorInterface { /** * The Input object. * * @var Input * @since 2.0.0 */ private $input; /** * The session object. * * @var SessionInterface * @since 2.0.0 */ private $session; /** * Constructor * * @param Input $input The input object * @param SessionInterface $session DispatcherInterface for the session to use. * * @since 2.0.0 */ public function __construct(Input $input, SessionInterface $session) { $this->input = $input; $this->session = $session; } /** * Validates the session * * @param boolean $restart Flag if the session should be restarted * * @return void * * @since 2.0.0 */ public function validate(bool $restart = false): void { if ($restart) { $this->session->set('session.client.forwarded', null); } $xForwardedFor = $this->input->server->getString('HTTP_X_FORWARDED_FOR', ''); // Record proxy forwarded for in the session in case we need it later if (!empty($xForwardedFor) && filter_var($xForwardedFor, FILTER_VALIDATE_IP) !== false) { $this->session->set('session.client.forwarded', $xForwardedFor); } } } src/Validator/AddressValidator.php 0000644 00000003502 15173537206 0013235 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Validator; use Joomla\Input\Input; use Joomla\Session\Exception\InvalidSessionException; use Joomla\Session\SessionInterface; use Joomla\Session\ValidatorInterface; use Joomla\Utilities\IpHelper; /** * Interface for validating a part of the session * * @since 2.0.0 */ class AddressValidator implements ValidatorInterface { /** * The Input object. * * @var Input * @since 2.0.0 */ private $input; /** * The session object. * * @var SessionInterface * @since 2.0.0 */ private $session; /** * Constructor * * @param Input $input The input object * @param SessionInterface $session DispatcherInterface for the session to use. * * @since 2.0.0 */ public function __construct(Input $input, SessionInterface $session) { $this->input = $input; $this->session = $session; } /** * Validates the session * * @param boolean $restart Flag if the session should be restarted * * @return void * * @since 2.0.0 * @throws InvalidSessionException */ public function validate(bool $restart = false): void { if ($restart) { $this->session->set('session.client.address', null); } $remoteAddr = IpHelper::getIp(); // Check for client address if (!empty($remoteAddr) && filter_var($remoteAddr, FILTER_VALIDATE_IP) !== false) { $ip = $this->session->get('session.client.address'); if ($ip === null) { $this->session->set('session.client.address', $remoteAddr); } elseif ($remoteAddr !== $ip) { throw new InvalidSessionException('Invalid client IP'); } } } } src/Command/CreateSessionTableCommand.php 0000644 00000005011 15173537206 0014446 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Command; use Joomla\Console\Command\AbstractCommand; use Joomla\Database\DatabaseInterface; use Joomla\Session\Exception\CreateSessionTableException; use Joomla\Session\Exception\UnsupportedDatabaseDriverException; use Joomla\Session\Handler\DatabaseHandler; use Symfony\Component\Console\Input\InputInterface; use Symfony\Component\Console\Output\OutputInterface; use Symfony\Component\Console\Style\SymfonyStyle; /** * Command used to create the session database table. * * @since 2.0.0 */ class CreateSessionTableCommand extends AbstractCommand { /** * The default command name * * @var string * @since 2.0.0 */ protected static $defaultName = 'session:create-table'; /** * Database connector * * @var DatabaseInterface * @since 2.0.0 */ private $db; /** * Instantiate the command. * * @param DatabaseInterface $db Database connector * * @since 2.0.0 */ public function __construct(DatabaseInterface $db) { $this->db = $db; parent::__construct(); } /** * Configure the command. * * @return void * * @since 2.0.0 */ protected function configure(): void { $this->setDescription('Creates the session database table if not already present'); } /** * Internal function to execute the command. * * @param InputInterface $input The input to inject into the command. * @param OutputInterface $output The output to inject into the command. * * @return integer The command exit code * * @since 2.0.0 */ protected function doExecute(InputInterface $input, OutputInterface $output): int { $io = new SymfonyStyle($input, $output); $io->title('Create Session Table'); // Check if the table exists if (\in_array($this->db->replacePrefix('#__session'), $this->db->getTableList())) { $io->success('The session table already exists.'); return 0; } try { (new DatabaseHandler($this->db))->createDatabaseTable(); } catch (UnsupportedDatabaseDriverException $exception) { $io->error($exception->getMessage()); return 1; } catch (CreateSessionTableException $exception) { $io->error(\sprintf('The session table could not be created: %s', $exception->getMessage())); return 1; } $io->success('The session table has been created.'); return 0; } } src/StorageInterface.php 0000644 00000007145 15173537206 0011311 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session; /** * Interface defining a Joomla! session storage object * * @since 2.0.0 */ interface StorageInterface { /** * Get the session name * * @return string The session name * * @since 2.0.0 */ public function getName(): string; /** * Set the session name * * @param string $name The session name * * @return $this * * @since 2.0.0 */ public function setName(string $name); /** * Get the session ID * * @return string The session ID * * @since 2.0.0 */ public function getId(): string; /** * Set the session ID * * @param string $id The session ID * * @return $this * * @since 2.0.0 */ public function setId(string $id); /** * Check if the session is active * * @return boolean * * @since 2.0.0 */ public function isActive(): bool; /** * Check if the session is started * * @return boolean * * @since 2.0.0 */ public function isStarted(): bool; /** * Get data from the session store * * @param string $name Name of a variable * @param mixed $default Default value of a variable if not set * * @return mixed Value of a variable * * @since 2.0.0 */ public function get(string $name, $default); /** * Set data into the session store * * @param string $name Name of a variable * @param mixed $value Value of a variable * * @return mixed Old value of a variable * * @since 2.0.0 */ public function set(string $name, $value); /** * Check whether data exists in the session store * * @param string $name Name of variable * * @return boolean * * @since 2.0.0 */ public function has(string $name): bool; /** * Unset a variable from the session store * * @param string $name Name of variable * * @return mixed The value from session or NULL if not set * * @since 2.0.0 */ public function remove(string $name); /** * Clears all variables from the session store * * @return void * * @since 2.0.0 */ public function clear(): void; /** * Retrieves all variables from the session store * * @return array * * @since 2.0.0 */ public function all(): array; /** * Start a session * * @return void * * @since 2.0.0 */ public function start(): void; /** * Regenerates the session ID that represents this storage. * * This method must invoke session_regenerate_id($destroy) unless this interface is used for a storage object designed for unit * or functional testing where a real PHP session would interfere with testing. * * @param boolean $destroy Destroy session when regenerating? * * @return boolean True on success * * @see session_regenerate_id() * @since 2.0.0 */ public function regenerate(bool $destroy = false): bool; /** * Writes session data and ends session * * @return void * * @see session_write_close() * @since 2.0.0 */ public function close(): void; /** * Perform session data garbage collection * * @return integer|boolean Number of deleted sessions on success or boolean false on failure or if the function is unsupported * * @see session_gc() * @since 2.0.0 */ public function gc(); /** * Aborts the current session * * @return boolean * * @see session_abort() * @since 2.0.0 */ public function abort(): bool; } src/SessionEvents.php 0000644 00000001752 15173537206 0010672 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session; /** * Class defining the events dispatched by the session API * * @since 2.0.0 */ final class SessionEvents { /** * Private constructor to prevent instantiation of this class * * @since 2.0.0 */ private function __construct() { } /** * Session event which is dispatched after the session has been started. * * Listeners to this event receive a `Joomla\Session\SessionEvent` object. * * @var string * @since 2.0.0 */ public const START = 'session.start'; /** * Session event which is dispatched after the session has been restarted. * * Listeners to this event receive a `Joomla\Session\SessionEvent` object. * * @var string * @since 2.0.0 */ public const RESTART = 'session.restart'; } src/Handler/FilesystemHandler.php 0000644 00000004010 15173537206 0013047 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Handler; use Joomla\Session\HandlerInterface; /** * Filesystem session storage handler * * @since 2.0.0 */ class FilesystemHandler extends \SessionHandler implements HandlerInterface { /** * Constructor * * @param string $path Path of directory to save session files. Leave null to use the PHP configured path. * * @since 2.0.0 * @throws \InvalidArgumentException * @throws \RuntimeException */ public function __construct(string $path = '') { $pathConfig = ini_get('session.save_path'); // If the paths are empty, then we can't use this handler if (empty($path) && empty($pathConfig)) { throw new \InvalidArgumentException('Invalid argument $path'); } // If path is empty or equal to the the PHP configured path, set only the handler and use the PHP path directly if (empty($path) || $path === $pathConfig) { if (!headers_sent()) { ini_set('session.save_handler', 'files'); } return; } $baseDir = $path; if ($count = substr_count($path, ';')) { if ($count > 2) { throw new \InvalidArgumentException(sprintf('Invalid argument $path "%s"', $path)); } // Characters after the last semi-colon are the path $baseDir = ltrim(strrchr($path, ';'), ';'); } // Create the directory if it doesn't exist if (!is_dir($baseDir)) { if (!mkdir($baseDir, 0755)) { throw new \RuntimeException(sprintf('Could not create session directory "%s"', $baseDir)); } } if (!headers_sent()) { ini_set('session.save_path', $path); ini_set('session.save_handler', 'files'); } } /** * Test to see if the HandlerInterface is available * * @return boolean True on success, false otherwise * * @since 2.0.0 */ public static function isSupported(): bool { return true; } } src/Handler/ApcuHandler.php 0000644 00000006262 15173537206 0011626 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Handler; use Joomla\Session\HandlerInterface; /** * APCu session storage handler * * @since 2.0.0 */ class ApcuHandler implements HandlerInterface { /** * Session ID prefix to avoid naming conflicts * * @var string * @since 2.0.0 */ private $prefix; /** * Constructor * * @param array $options Associative array of options to configure the handler * * @since 2.0.0 */ public function __construct(array $options = []) { // Namespace our session IDs to avoid potential conflicts $this->prefix = $options['prefix'] ?? 'jfw'; } /** * Close the session * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function close() { return true; } /** * Destroy a session * * @param integer $session_id The session ID being destroyed * * @return boolean True on success, false otherwise * * @since 2.0.0 */ public function destroy($session_id): bool { // The apcu_delete function returns false if the id does not exist return apcu_delete($this->prefix . $session_id) || !apcu_exists($this->prefix . $session_id); } /** * Cleanup old sessions * * @param integer $maxlifetime Sessions that have not updated for the last maxlifetime seconds will be removed * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function gc($maxlifetime) { return true; } /** * Test to see if the HandlerInterface is available * * @return boolean True on success, false otherwise * * @since 2.0.0 */ public static function isSupported(): bool { $supported = \extension_loaded('apcu') && ini_get('apc.enabled'); // If on the CLI interface, the `apc.enable_cli` option must also be enabled if ($supported && PHP_SAPI === 'cli') { $supported = ini_get('apc.enable_cli'); } return (bool) $supported; } /** * Initialize session * * @param string $save_path The path where to store/retrieve the session * @param string $session_id The session id * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function open($save_path, $session_id) { return true; } /** * Read session data * * @param string $session_id The session id to read data for * * @return string The session data * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function read($session_id) { return (string) apcu_fetch($this->prefix . $session_id); } /** * Write session data * * @param string $session_id The session id * @param string $session_data The encoded session data * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function write($session_id, $session_data) { return apcu_store($this->prefix . $session_id, $session_data, ini_get('session.gc_maxlifetime')); } } src/Handler/WincacheHandler.php 0000644 00000001646 15173537206 0012460 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Handler; use Joomla\Session\HandlerInterface; /** * Wincache session storage handler * * @since 2.0.0 */ class WincacheHandler extends \SessionHandler implements HandlerInterface { /** * Constructor * * @since 2.0.0 */ public function __construct() { if (!headers_sent()) { ini_set('session.save_handler', 'wincache'); } } /** * Test to see if the HandlerInterface is available * * @return boolean True on success, false otherwise * * @since 2.0.0 */ public static function isSupported(): bool { return \extension_loaded('wincache') && \function_exists('wincache_ucache_get') && !strcmp(ini_get('wincache.ucenabled'), '1'); } } src/Handler/RedisHandler.php 0000644 00000007154 15173537206 0012005 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Handler; use Joomla\Session\HandlerInterface; /** * Redis session storage handler * * @since 2.0.0 */ class RedisHandler implements HandlerInterface { /** * Session ID prefix to avoid naming conflicts * * @var string * @since 2.0.0 */ private $prefix; /** * Redis driver * * @var \Redis * @since 2.0.0 */ private $redis; /** * Time to live in seconds * * @var integer * @since 2.0.0 */ private $ttl; /** * Constructor * * @param \Redis $redis A Redis instance * @param array $options Associative array of options to configure the handler * * @since 2.0.0 */ public function __construct(\Redis $redis, array $options = []) { $this->redis = $redis; // Set the default time-to-live based on the Session object's default configuration $this->ttl = isset($options['ttl']) ? (int) $options['ttl'] : 900; // Namespace our session IDs to avoid potential conflicts $this->prefix = $options['prefix'] ?? 'jfw'; } /** * Close the session * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function close() { // No need to close the connection to Redis server manually. return true; } /** * Destroy a session, called automatically when running session_regenerate_id(). * * @param integer $session_id The session ID being destroyed * * @return boolean True on success, false otherwise * * @since 2.0.0 */ public function destroy($session_id): bool { $this->redis->del($this->prefix . $session_id); // Session callback must have a return value of type bool when session_regenerate_id() is called. return true; } /** * Cleanup old sessions * * @param integer $maxlifetime Sessions that have not updated for the last maxlifetime seconds will be removed * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function gc($maxlifetime) { return true; } /** * Test to see if the HandlerInterface is available * * @return boolean True on success, false otherwise * * @since 2.0.0 */ public static function isSupported(): bool { return \extension_loaded('redis') && class_exists('Redis'); } /** * Initialize session * * @param string $save_path The path where to store/retrieve the session * @param string $session_id The session id * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function open($save_path, $session_id) { return true; } /** * Read session data * * @param string $session_id The session id to read data for * * @return string The session data * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function read($session_id) { return $this->redis->get($this->prefix . $session_id) ?: ''; } /** * Write session data * * @param string $session_id The session id * @param string $session_data The encoded session data * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function write($session_id, $session_data) { if ($this->ttl > 0) { return $this->redis->setex($this->prefix . $session_id, $this->ttl, $session_data); } return $this->redis->set($this->prefix . $session_id, $session_data); } } src/Handler/MemcachedHandler.php 0000644 00000007055 15173537206 0012605 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Handler; use Joomla\Session\HandlerInterface; /** * Memcached session storage handler * * @since 2.0.0 */ class MemcachedHandler implements HandlerInterface { /** * Memcached driver * * @var \Memcached * @since 2.0.0 */ private $memcached; /** * Session ID prefix to avoid naming conflicts * * @var string * @since 2.0.0 */ private $prefix; /** * Time to live in seconds * * @var integer * @since 2.0.0 */ private $ttl; /** * Constructor * * @param \Memcached $memcached A Memcached instance * @param array $options Associative array of options to configure the handler * * @since 2.0.0 */ public function __construct(\Memcached $memcached, array $options = []) { $this->memcached = $memcached; // Set the default time-to-live based on the Session object's default configuration $this->ttl = isset($options['ttl']) ? (int) $options['ttl'] : 900; // Namespace our session IDs to avoid potential conflicts $this->prefix = $options['prefix'] ?? 'jfw'; } /** * Close the session * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function close() { return true; } /** * Destroy a session * * @param integer $session_id The session ID being destroyed * * @return boolean True on success, false otherwise * * @since 2.0.0 */ public function destroy($session_id): bool { return $this->memcached->delete($this->prefix . $session_id); } /** * Cleanup old sessions * * @param integer $maxlifetime Sessions that have not updated for the last maxlifetime seconds will be removed * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function gc($maxlifetime) { // Memcached manages garbage collection on its own return true; } /** * Test to see if the HandlerInterface is available * * @return boolean True on success, false otherwise * * @since 2.0.0 */ public static function isSupported(): bool { /* * GAE and HHVM have both had instances where Memcached the class was defined but no extension was loaded. * If the class is there, we can assume it works. */ return class_exists('Memcached'); } /** * Initialize session * * @param string $save_path The path where to store/retrieve the session * @param string $session_id The session id * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function open($save_path, $session_id) { return true; } /** * Read session data * * @param string $session_id The session id to read data for * * @return string The session data * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function read($session_id) { return $this->memcached->get($this->prefix . $session_id) ?: ''; } /** * Write session data * * @param string $session_id The session id * @param string $session_data The encoded session data * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function write($session_id, $session_data) { return $this->memcached->set($this->prefix . $session_id, $session_data, time() + $this->ttl); } } src/Handler/DatabaseHandler.php 0000644 00000015622 15173537206 0012442 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Handler; use Joomla\Database\DatabaseDriver; use Joomla\Database\DatabaseInterface; use Joomla\Database\Exception\ExecutionFailureException; use Joomla\Database\ParameterType; use Joomla\Session\Exception\CreateSessionTableException; use Joomla\Session\Exception\UnsupportedDatabaseDriverException; use Joomla\Session\HandlerInterface; /** * Database session storage handler * * @since 2.0.0 */ class DatabaseHandler implements HandlerInterface { /** * Database connector * * @var DatabaseInterface * @since 2.0.0 */ private $db; /** * Flag whether gc() has been called * * @var boolean * @since 2.0.0 */ private $gcCalled = false; /** * Lifetime for garbage collection * * @var integer * @since 2.0.0 */ private $gcLifetime; /** * Constructor * * @param DatabaseInterface $db Database connector * * @since 2.0.0 */ public function __construct(DatabaseInterface $db) { $this->db = $db; } /** * Close the session * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function close() { if ($this->gcCalled) { $query = $this->db->getQuery(true) ->delete($this->db->quoteName('#__session')) ->where($this->db->quoteName('time') . ' < ?') ->bind(1, $this->gcLifetime, ParameterType::INTEGER); // Remove expired sessions from the database. $this->db->setQuery($query)->execute(); $this->gcCalled = false; $this->gcLifetime = null; } $this->db->disconnect(); return true; } /** * Creates the session database table * * @return boolean * * @since 2.0.0 * @throws CreateSessionTableException * @throws UnsupportedDatabaseDriverException */ public function createDatabaseTable(): bool { switch ($this->db->getName()) { case 'mysql': case 'mysqli': $filename = 'mysql.sql'; break; case 'postgresql': $filename = 'pgsql.sql'; break; case 'sqlsrv': case 'sqlazure': $filename = 'sqlsrv.sql'; break; case 'sqlite': $filename = 'sqlite.sql'; break; default: throw new UnsupportedDatabaseDriverException(sprintf('The %s database driver is not supported.', $this->db->getName())); } $path = \dirname(__DIR__, 2) . '/meta/sql/' . $filename; if (!is_readable($path)) { throw new CreateSessionTableException( sprintf('Database schema could not be read from %s. Please ensure the file exists and is readable.', $path) ); } $queries = DatabaseDriver::splitSql(file_get_contents($path)); foreach ($queries as $query) { $query = trim($query); if ($query !== '') { try { $this->db->setQuery($query)->execute(); } catch (ExecutionFailureException $exception) { throw new CreateSessionTableException('Failed to create the session table.', 0, $exception); } } } return true; } /** * Destroy a session * * @param integer $session_id The session ID being destroyed * * @return boolean True on success, false otherwise * * @since 2.0.0 */ public function destroy($session_id): bool { try { $query = $this->db->getQuery(true) ->delete($this->db->quoteName('#__session')) ->where($this->db->quoteName('session_id') . ' = ' . $this->db->quote($session_id)); // Remove a session from the database. $this->db->setQuery($query)->execute(); return true; } catch (\Exception $e) { return false; } } /** * Cleanup old sessions * * @param integer $maxlifetime Sessions that have not updated for the last maxlifetime seconds will be removed * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function gc($maxlifetime) { // We'll delay garbage collection until the session is closed to prevent potential issues mid-cycle $this->gcLifetime = time() - $maxlifetime; $this->gcCalled = true; return true; } /** * Test to see if the HandlerInterface is available * * @return boolean True on success, false otherwise * * @since 2.0.0 */ public static function isSupported(): bool { return interface_exists(DatabaseInterface::class); } /** * Initialize session * * @param string $save_path The path where to store/retrieve the session * @param string $session_id The session id * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function open($save_path, $session_id) { $this->db->connect(); return true; } /** * Read session data * * @param string $session_id The session id to read data for * * @return string The session data * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function read($session_id) { try { // Get the session data from the database table. $query = $this->db->getQuery(true) ->select($this->db->quoteName('data')) ->from($this->db->quoteName('#__session')) ->where($this->db->quoteName('session_id') . ' = ?') ->bind(1, $session_id); $this->db->setQuery($query); return (string) $this->db->loadResult(); } catch (\Exception $e) { return ''; } } /** * Write session data * * @param string $session_id The session id * @param string $session_data The encoded session data * * @return boolean True on success, false otherwise * * @since 2.0.0 */ #[\ReturnTypeWillChange] public function write($session_id, $session_data) { try { // Figure out if a row exists for the session ID $query = $this->db->getQuery(true) ->select($this->db->quoteName('session_id')) ->from($this->db->quoteName('#__session')) ->where($this->db->quoteName('session_id') . ' = ?') ->bind(1, $session_id); $idExists = $this->db->setQuery($query)->loadResult(); $query = $this->db->getQuery(true); $time = time(); if ($idExists) { $query->update($this->db->quoteName('#__session')) ->set($this->db->quoteName('data') . ' = ?') ->set($this->db->quoteName('time') . ' = ?') ->where($this->db->quoteName('session_id') . ' = ?') ->bind(1, $session_data) ->bind(2, $time, ParameterType::INTEGER) ->bind(3, $session_id); } else { $query->insert($this->db->quoteName('#__session')) ->columns([$this->db->quoteName('data'), $this->db->quoteName('time'), $this->db->quoteName('session_id')]) ->values('?, ?, ?') ->bind(1, $session_data) ->bind(2, $time, ParameterType::INTEGER) ->bind(3, $session_id); } // Try to insert the session data in the database table. $this->db->setQuery($query)->execute(); return true; } catch (\Exception $e) { return false; } } } src/HandlerInterface.php 0000644 00000001112 15173537206 0011246 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session; /** * Interface defining Joomla! session handlers * * @since 2.0.0 */ interface HandlerInterface extends \SessionHandlerInterface { /** * Test to see if the HandlerInterface is available. * * @return boolean True on success, false otherwise. * * @since 2.0.0 */ public static function isSupported(): bool; } src/SessionInterface.php 0000644 00000012511 15173537206 0011321 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session; /** * Interface defining a Joomla! Session object * * @since 2.0.0 */ interface SessionInterface extends \IteratorAggregate { /** * Get expiration time in seconds * * @return integer The session expiration time in seconds * * @since 2.0.0 */ public function getExpire(); /** * Get the session name * * @return string The session name * * @since 2.0.0 */ public function getName(); /** * Set the session name * * @param string $name The session name * * @return $this * * @since 2.0.0 */ public function setName(string $name); /** * Get the session ID * * @return string The session ID * * @since 2.0.0 */ public function getId(); /** * Set the session ID * * @param string $id The session ID * * @return $this * * @since 2.0.0 */ public function setId(string $id); /** * Check if the session is active * * @return boolean * * @since 2.0.0 */ public function isActive(); /** * Check whether this session is newly created * * @return boolean * * @since 2.0.0 */ public function isNew(); /** * Check if the session is started * * @return boolean * * @since 2.0.0 */ public function isStarted(); /** * Get a session token. * * Tokens are used to secure forms from spamming attacks. Once a token has been generated the system will check the request to see if * it is present, if not it will invalidate the session. * * @param boolean $forceNew If true, forces a new token to be created * * @return string * * @since 2.0.0 */ public function getToken($forceNew = false); /** * Check if the session has the given token. * * @param string $token Hashed token to be verified * @param boolean $forceExpire If true, expires the session * * @return boolean * * @since 2.0.0 */ public function hasToken($token, $forceExpire = true); /** * Get data from the session store * * @param string $name Name of a variable * @param mixed $default Default value of a variable if not set * * @return mixed Value of a variable * * @since 2.0.0 */ public function get($name, $default = null); /** * Set data into the session store * * @param string $name Name of a variable. * @param mixed $value Value of a variable. * * @return mixed Old value of a variable. * * @since 2.0.0 */ public function set($name, $value = null); /** * Check whether data exists in the session store * * @param string $name Name of variable * * @return boolean True if the variable exists * * @since 2.0.0 */ public function has($name); /** * Unset a variable from the session store * * @param string $name Name of variable * * @return mixed The value from session or NULL if not set * * @since 2.0.0 */ public function remove(string $name); /** * Clears all variables from the session store * * @return void * * @since 2.0.0 */ public function clear(); /** * Retrieves all variables from the session store * * @return array * * @since 2.0.0 */ public function all(): array; /** * Start a session * * @return void * * @since 2.0.0 */ public function start(); /** * Frees all session variables and destroys all data registered to a session * * This method resets the $_SESSION variable and destroys all of the data associated * with the current session in its storage (file or DB). It forces new session to be * started after this method is called. It does not unset the session cookie. * * @return boolean * * @see session_destroy() * @see session_unset() * @since 2.0.0 */ public function destroy(); /** * Restart an expired or locked session * * @return boolean True on success * * @see destroy * @since 2.0.0 */ public function restart(); /** * Create a new session and copy variables from the old one * * @return boolean * * @since 2.0.0 */ public function fork(); /** * Writes session data and ends session * * Session data is usually stored after your script terminated without the need * to call SessionInterface::close(), but as session data is locked to prevent concurrent * writes only one script may operate on a session at any time. When using * framesets together with sessions you will experience the frames loading one * by one due to this locking. You can reduce the time needed to load all the * frames by ending the session as soon as all changes to session variables are * done. * * @return void * * @see session_write_close() * @since 2.0.0 */ public function close(); /** * Perform session data garbage collection * * @return integer|boolean Number of deleted sessions on success or boolean false on failure or if the function is unsupported * * @see session_gc() * @since 2.0.0 */ public function gc(); /** * Aborts the current session * * @return boolean * * @see session_abort() * @since 2.0.0 */ public function abort(): bool; } src/Storage/RuntimeStorage.php 0000644 00000014257 15173537206 0012442 0 ustar 00 <?php /** * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Storage; use Joomla\Session\StorageInterface; /** * Session storage object that stores objects in Runtime memory. This is designed for use in CLI Apps, including * unit testing applications in PHPUnit. * * @since 2.0.0 */ class RuntimeStorage implements StorageInterface { /** * Flag if the session is active * * @var boolean * @since 2.0.0 */ private $active = false; /** * Internal flag identifying whether the session has been closed * * @var boolean * @since 2.0.0 */ private $closed = false; /** * Internal data store * * @var array * @since 2.0.0 */ private $data = []; /** * Session ID * * @var string * @since 2.0.0 */ private $id = ''; /** * Session Name * * @var string * @since 2.0.0 */ private $name = 'MockSession'; /** * Internal flag identifying whether the session has been started * * @var boolean * @since 2.0.0 */ private $started = false; /** * Retrieves all variables from the session store * * @return array */ public function all(): array { return $this->data; } /** * Clears all variables from the session store * * @return void * * @since 2.0.0 */ public function clear(): void { $this->data = []; } /** * Writes session data and ends session * * @return void * * @see session_write_close() * @since 2.0.0 */ public function close(): void { $this->closed = true; $this->started = false; } /** * Perform session data garbage collection * * @return integer|boolean Number of deleted sessions on success or boolean false on failure or if the function is unsupported * * @see session_gc() * @since 2.0.0 */ public function gc() { return 0; } /** * Aborts the current session * * @return boolean * * @see session_abort() * @since 2.0.0 */ public function abort(): bool { $this->closed = true; $this->started = false; return true; } /** * Generates a session ID * * @return string * * @since 2.0.0 */ private function generateId(): string { return hash('sha256', uniqid(mt_rand())); } /** * Get data from the session store * * @param string $name Name of a variable * @param mixed $default Default value of a variable if not set * * @return mixed Value of a variable * * @since 2.0.0 */ public function get(string $name, $default) { if (!$this->isStarted()) { $this->start(); } if (isset($this->data[$name])) { return $this->data[$name]; } return $default; } /** * Get the session ID * * @return string The session ID * * @since 2.0.0 */ public function getId(): string { return $this->id; } /** * Get the session name * * @return string The session name * * @since 2.0.0 */ public function getName(): string { return $this->name; } /** * Check whether data exists in the session store * * @param string $name Name of variable * * @return boolean * * @since 2.0.0 */ public function has(string $name): bool { if (!$this->isStarted()) { $this->start(); } return isset($this->data[$name]); } /** * Check if the session is active * * @return boolean * * @since 2.0.0 */ public function isActive(): bool { return $this->active = $this->started; } /** * Check if the session is started * * @return boolean * * @since 2.0.0 */ public function isStarted(): bool { return $this->started; } /** * Unset a variable from the session store * * @param string $name Name of variable * * @return mixed The value from session or NULL if not set * * @since 2.0.0 */ public function remove(string $name) { if (!$this->isStarted()) { $this->start(); } $old = $this->data[$name] ?? null; unset($this->data[$name]); return $old; } /** * Regenerates the session ID that represents this storage. * * This method must invoke session_regenerate_id($destroy) unless this interface is used for a storage object designed for unit * or functional testing where a real PHP session would interfere with testing. * * @param boolean $destroy Destroy session when regenerating? * * @return boolean True on success * * @see session_regenerate_id() * @since 2.0.0 */ public function regenerate(bool $destroy = false): bool { if (!$this->isActive()) { return false; } if ($destroy) { $this->id = $this->generateId(); } return true; } /** * Set data into the session store * * @param string $name Name of a variable * @param mixed $value Value of a variable * * @return mixed Old value of a variable * * @since 2.0.0 */ public function set(string $name, $value = null) { if (!$this->isStarted()) { $this->start(); } $old = $this->data[$name] ?? null; $this->data[$name] = $value; return $old; } /** * Set the session ID * * @param string $id The session ID * * @return $this * * @since 2.0.0 * @throws \LogicException */ public function setId(string $id) { if ($this->isActive()) { throw new \LogicException('Cannot change the ID of an active session'); } $this->id = $id; return $this; } /** * Set the session name * * @param string $name The session name * * @return $this * * @since 2.0.0 * @throws \LogicException */ public function setName(string $name) { if ($this->isActive()) { throw new \LogicException('Cannot change the name of an active session'); } $this->name = $name; return $this; } /** * Start a session * * @return void * * @since 2.0.0 */ public function start(): void { if ($this->isStarted()) { return; } if ($this->isActive()) { throw new \RuntimeException('Failed to start the session: already started by PHP.'); } if (empty($this->id)) { $this->setId($this->generateId()); } $this->closed = false; $this->started = true; $this->isActive(); } } src/Storage/NativeStorage.php 0000644 00000022035 15173537206 0012236 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Storage; use Joomla\Session\HandlerInterface; use Joomla\Session\StorageInterface; /** * Base class providing a session store * * @since 2.0.0 */ class NativeStorage implements StorageInterface { /** * Flag if the session is active * * @var boolean * @since 2.0.0 */ private $active = false; /** * Internal flag identifying whether the session has been closed * * @var boolean * @since 2.0.0 */ private $closed = false; /** * Session save handler * * @var \SessionHandlerInterface * @since 2.0.0 */ private $handler; /** * Internal flag identifying whether the session has been started * * @var boolean * @since 2.0.0 */ private $started = false; /** * Constructor * * @param \SessionHandlerInterface $handler Session save handler * @param array $options Session options * * @since 1.0 */ public function __construct(?\SessionHandlerInterface $handler = null, array $options = []) { // Disable transparent sid support and default use cookies $options += [ 'use_cookies' => 1, 'use_trans_sid' => 0, ]; if (!headers_sent()) { session_cache_limiter('none'); } session_register_shutdown(); $this->setOptions($options); $this->setHandler($handler); } /** * Retrieves all variables from the session store * * @return array * * @since 2.0.0 */ public function all(): array { return $_SESSION; } /** * Clears all variables from the session store * * @return void * * @since 2.0.0 */ public function clear(): void { $_SESSION = []; } /** * Writes session data and ends session * * @return void * * @see session_write_close() * @since 2.0.0 */ public function close(): void { session_write_close(); $this->closed = true; $this->started = false; } /** * Perform session data garbage collection * * @return integer|boolean Number of deleted sessions on success or boolean false on failure or if the function is unsupported * * @see session_gc() * @since 2.0.0 */ public function gc() { if (!$this->isStarted()) { $this->start(); } return session_gc(); } /** * Aborts the current session * * @return boolean * * @see session_abort() * @since 2.0.0 */ public function abort(): bool { if (!$this->isStarted()) { return true; } return session_abort(); } /** * Get data from the session store * * @param string $name Name of a variable * @param mixed $default Default value of a variable if not set * * @return mixed Value of a variable * * @since 2.0.0 */ public function get(string $name, $default) { if (!$this->isStarted()) { $this->start(); } if (isset($_SESSION[$name])) { return $_SESSION[$name]; } return $default; } /** * Gets the save handler instance * * @return \SessionHandlerInterface|null * * @since 2.0.0 */ public function getHandler(): ?\SessionHandlerInterface { return $this->handler; } /** * Get the session ID * * @return string The session ID * * @since 2.0.0 */ public function getId(): string { return session_id(); } /** * Get the session name * * @return string The session name * * @since 2.0.0 */ public function getName(): string { return session_name(); } /** * Check whether data exists in the session store * * @param string $name Name of variable * * @return boolean * * @since 2.0.0 */ public function has(string $name): bool { if (!$this->isStarted()) { $this->start(); } return isset($_SESSION[$name]); } /** * Check if the session is active * * @return boolean * * @since 2.0.0 */ public function isActive(): bool { return $this->active = session_status() === \PHP_SESSION_ACTIVE; } /** * Check if the session is started * * @return boolean * * @since 2.0.0 */ public function isStarted(): bool { return $this->started; } /** * Unset a variable from the session store * * @param string $name Name of variable * * @return mixed The value from session or NULL if not set * * @since 2.0.0 */ public function remove(string $name) { if (!$this->isStarted()) { $this->start(); } $old = $_SESSION[$name] ?? null; unset($_SESSION[$name]); return $old; } /** * Regenerates the session ID that represents this storage. * * This method must invoke session_regenerate_id($destroy) unless this interface is used for a storage object designed for unit * or functional testing where a real PHP session would interfere with testing. * * @param boolean $destroy Destroy session when regenerating? * * @return boolean True on success * * @see session_regenerate_id() * @since 2.0.0 */ public function regenerate(bool $destroy = false): bool { if (headers_sent() || !$this->isActive()) { return false; } return session_regenerate_id($destroy); } /** * Set data into the session store * * @param string $name Name of a variable * @param mixed $value Value of a variable * * @return mixed Old value of a variable * * @since 2.0.0 */ public function set(string $name, $value = null) { if (!$this->isStarted()) { $this->start(); } $old = $_SESSION[$name] ?? null; $_SESSION[$name] = $value; return $old; } /** * Registers session save handler as a PHP session handler * * @param \SessionHandlerInterface $handler The save handler to use * * @return $this * * @since 2.0.0 * @throws \RuntimeException */ public function setHandler(?\SessionHandlerInterface $handler = null): self { // If the handler is an instance of our HandlerInterface, check whether it is supported if ($handler instanceof HandlerInterface) { if (!$handler::isSupported()) { throw new \RuntimeException( sprintf( 'The "%s" handler is not supported in this environment.', \get_class($handler) ) ); } } $this->handler = $handler; if (!headers_sent() && !$this->isActive()) { session_set_save_handler($this->handler, false); } return $this; } /** * Set the session ID * * @param string $id The session ID * * @return $this * * @since 2.0.0 * @throws \LogicException */ public function setId(string $id) { if ($this->isActive()) { throw new \LogicException('Cannot change the ID of an active session'); } session_id($id); return $this; } /** * Set the session name * * @param string $name The session name * * @return $this * * @since 2.0.0 * @throws \LogicException */ public function setName(string $name) { if ($this->isActive()) { throw new \LogicException('Cannot change the name of an active session'); } session_name($name); return $this; } /** * Sets session.* ini variables. * * For convenience we omit 'session.' from the beginning of the keys. * Explicitly ignores other ini keys. * * @param array $options Session ini directives array(key => value). * * @return $this * * @note Based on \Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage::setOptions() * @see http://php.net/session.configuration * @since 2.0.0 */ public function setOptions(array $options): self { if (headers_sent() || $this->isActive()) { return $this; } $validOptions = array_flip( [ 'cache_limiter', 'cache_expire', 'cookie_domain', 'cookie_httponly', 'cookie_lifetime', 'cookie_path', 'cookie_secure', 'gc_divisor', 'gc_maxlifetime', 'gc_probability', 'lazy_write', 'name', 'referer_check', 'serialize_handler', 'use_strict_mode', 'use_cookies', 'use_only_cookies', 'use_trans_sid', 'upload_progress.enabled', 'upload_progress.cleanup', 'upload_progress.prefix', 'upload_progress.name', 'upload_progress.freq', 'upload_progress.min-freq', 'url_rewriter.tags', 'sid_length', 'sid_bits_per_character', 'trans_sid_hosts', 'trans_sid_tags', ] ); foreach ($options as $key => $value) { if (isset($validOptions[$key])) { ini_set('session.' . $key, $value); } } return $this; } /** * Start a session * * @return void * * @since 2.0.0 */ public function start(): void { if ($this->isStarted()) { return; } if ($this->isActive()) { throw new \RuntimeException('Failed to start the session: already started by PHP.'); } if (ini_get('session.use_cookies') && headers_sent($file, $line)) { throw new \RuntimeException( sprintf('Failed to start the session because headers have already been sent by "%s" at line %d.', $file, $line) ); } if (!session_start()) { throw new \RuntimeException('Failed to start the session'); } $this->isActive(); $this->closed = false; $this->started = true; } } src/Session.php 0000644 00000036145 15173537206 0007511 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session; use Joomla\Event\DispatcherAwareInterface; use Joomla\Event\DispatcherAwareTrait; use Joomla\Event\DispatcherInterface; /** * Class for managing HTTP sessions * * Provides access to session-state values as well as session-level settings and lifetime management methods. * Based on the standard PHP session handling mechanism it provides more advanced features such as expire timeouts. * * @since 1.0 */ class Session implements SessionInterface, DispatcherAwareInterface { use DispatcherAwareTrait; /** * Internal session state. * * @var string * @since 1.0 */ protected $state = SessionState::INACTIVE; /** * Maximum age of unused session in seconds. * * @var integer * @since 1.0 */ protected $expire = 900; /** * The session store object. * * @var StorageInterface * @since 1.0 */ protected $store; /** * Container holding session validators. * * @var ValidatorInterface[] * @since 2.0.0 */ protected $sessionValidators = []; /** * Constructor * * @param StorageInterface $store A StorageInterface implementation. * @param DispatcherInterface $dispatcher DispatcherInterface for the session to use. * @param array $options Optional parameters. Supported keys include: * - name: The session name * - id: The session ID * - expire: The session lifetime in seconds * * @since 1.0 */ public function __construct(StorageInterface $store = null, DispatcherInterface $dispatcher = null, array $options = []) { $this->store = $store ?: new Storage\NativeStorage(new Handler\FilesystemHandler); if ($dispatcher) { $this->setDispatcher($dispatcher); } $this->setOptions($options); $this->setState(SessionState::INACTIVE); } /** * Adds a validator to the session * * @param ValidatorInterface $validator The session validator * * @return void * * @since 2.0.0 */ public function addValidator(ValidatorInterface $validator): void { $this->sessionValidators[] = $validator; } /** * Get expiration time in seconds * * @return integer The session expiration time in seconds * * @since 1.0 */ public function getExpire() { return $this->expire; } /** * Get current state of session * * @return string The session state * * @since 1.0 */ public function getState() { return $this->state; } /** * Get a session token. * * Tokens are used to secure forms from spamming attacks. Once a token has been generated the system will check the request to see if * it is present, if not it will invalidate the session. * * @param boolean $forceNew If true, forces a new token to be created * * @return string * * @since 1.0 */ public function getToken($forceNew = false) { // Ensure the session token exists and create it if necessary if (!$this->has('session.token') || $forceNew) { $this->set('session.token', $this->createToken()); } return $this->get('session.token'); } /** * Check if the session has the given token. * * @param string $token Hashed token to be verified * @param boolean $forceExpire If true, expires the session * * @return boolean * * @since 1.0 */ public function hasToken($token, $forceExpire = true) { $result = $this->get('session.token') === $token; if (!$result && $forceExpire) { $this->setState(SessionState::EXPIRED); } return $result; } /** * Retrieve an external iterator. * * @return \ArrayIterator Return an ArrayIterator of $_SESSION. * * @since 1.0 */ #[\ReturnTypeWillChange] public function getIterator() { return new \ArrayIterator($this->all()); } /** * Get session name * * @return string The session name * * @since 1.0 */ public function getName() { return $this->store->getName(); } /** * Set the session name * * @param string $name The session name * * @return $this * * @since 2.0.0 */ public function setName(string $name) { $this->store->setName($name); return $this; } /** * Get session id * * @return string The session id * * @since 1.0 */ public function getId() { return $this->store->getId(); } /** * Set the session ID * * @param string $id The session ID * * @return $this * * @since 2.0.0 */ public function setId(string $id) { $this->store->setId($id); return $this; } /** * Check if the session is active * * @return boolean * * @since 1.0 */ public function isActive() { if ($this->getState() === SessionState::ACTIVE) { return $this->store->isActive(); } return false; } /** * Check whether this session is currently created * * @return boolean * * @since 1.0 */ public function isNew() { $counter = $this->get('session.counter'); return $counter === 1; } /** * Check if the session is started * * @return boolean * * @since 2.0.0 */ public function isStarted(): bool { return $this->store->isStarted(); } /** * Get data from the session store * * @param string $name Name of a variable * @param mixed $default Default value of a variable if not set * * @return mixed Value of a variable * * @since 1.0 */ public function get($name, $default = null) { if (!$this->isActive()) { $this->start(); } return $this->store->get($name, $default); } /** * Set data into the session store. * * @param string $name Name of a variable. * @param mixed $value Value of a variable. * * @return mixed Old value of a variable. * * @since 1.0 */ public function set($name, $value = null) { if (!$this->isActive()) { $this->start(); } return $this->store->set($name, $value); } /** * Check whether data exists in the session store * * @param string $name Name of variable * * @return boolean True if the variable exists * * @since 1.0 */ public function has($name) { if (!$this->isActive()) { $this->start(); } return $this->store->has($name); } /** * Unset a variable from the session store * * @param string $name Name of variable * * @return mixed The value from session or NULL if not set * * @since 2.0.0 */ public function remove(string $name) { if (!$this->isActive()) { $this->start(); } return $this->store->remove($name); } /** * Clears all variables from the session store * * @return void * * @since 1.0 */ public function clear() { if (!$this->isActive()) { $this->start(); } $this->store->clear(); } /** * Retrieves all variables from the session store * * @return array * * @since 2.0.0 */ public function all(): array { if (!$this->isActive()) { $this->start(); } return $this->store->all(); } /** * Start a session. * * @return void * * @since 1.0 */ public function start() { if ($this->isStarted()) { return; } $this->store->start(); $this->setState(SessionState::ACTIVE); // Initialise the session $this->setCounter(); $this->setTimers(); // Perform security checks if (!$this->validate()) { // If the session isn't valid because it expired try to restart it or destroy it. if ($this->getState() === SessionState::EXPIRED) { $this->restart(); } else { $this->destroy(); } } if ($this->dispatcher) { if (!empty($this->dispatcher->getListeners('onAfterSessionStart'))) { trigger_deprecation( 'joomla/session', '2.0.0', 'The `onAfterSessionStart` event is deprecated and will be removed in 3.0, use the %s::START event instead.', SessionEvents::class ); // Dispatch deprecated event $this->dispatcher->dispatch('onAfterSessionStart', new SessionEvent('onAfterSessionStart', $this)); } // Dispatch new event $this->dispatcher->dispatch(SessionEvents::START, new SessionEvent(SessionEvents::START, $this)); } } /** * Frees all session variables and destroys all data registered to a session * * This method resets the $_SESSION variable and destroys all of the data associated * with the current session in its storage (file or DB). It forces new session to be * started after this method is called. * * @return boolean * * @see session_destroy() * @see session_unset() * @since 1.0 */ public function destroy() { // Session was already destroyed if ($this->getState() === SessionState::DESTROYED) { return true; } $this->clear(); $this->fork(true); $this->setState(SessionState::DESTROYED); return true; } /** * Restart an expired or locked session. * * @return boolean True on success * * @see destroy * @since 1.0 */ public function restart() { // Backup existing session data $data = $this->all(); $this->destroy(); if ($this->getState() !== SessionState::DESTROYED) { // @TODO :: generated error here return false; } // Restart the session $this->store->start(); $this->setState(SessionState::ACTIVE); // Initialise the session $this->setCounter(); $this->setTimers(); // Restore the data foreach ($data as $key => $value) { $this->set($key, $value); } // If the restarted session cannot be validated then it will be destroyed if (!$this->validate(true)) { $this->destroy(); } if ($this->dispatcher) { if (!empty($this->dispatcher->getListeners('onAfterSessionRestart'))) { trigger_deprecation( 'joomla/session', '2.0.0', 'The `onAfterSessionRestart` event is deprecated and will be removed in 3.0, use the %s::RESTART event instead.', SessionEvents::class ); // Dispatch deprecated event $this->dispatcher->dispatch('onAfterSessionRestart', new SessionEvent('onAfterSessionRestart', $this)); } // Dispatch new event $this->dispatcher->dispatch(SessionEvents::RESTART, new SessionEvent(SessionEvents::RESTART, $this)); } return true; } /** * Create a new session and copy variables from the old one * * @param boolean $destroy Whether to delete the old session or leave it to garbage collection. * * @return boolean True on success * * @since 1.0 */ public function fork($destroy = false) { $result = $this->store->regenerate($destroy); if ($result) { $this->setTimers(); } return $result; } /** * Writes session data and ends session * * Session data is usually stored after your script terminated without the need * to call {@link Session::close()}, but as session data is locked to prevent concurrent * writes only one script may operate on a session at any time. When using * framesets together with sessions you will experience the frames loading one * by one due to this locking. You can reduce the time needed to load all the * frames by ending the session as soon as all changes to session variables are * done. * * @return void * * @see session_write_close() * @since 1.0 */ public function close() { $this->store->close(); $this->setState(SessionState::CLOSED); } /** * Perform session data garbage collection * * @return integer|boolean Number of deleted sessions on success or boolean false on failure or if the function is unsupported * * @see session_gc() * @since 2.0.0 */ public function gc() { if (!$this->isActive()) { $this->start(); } return $this->store->gc(); } /** * Aborts the current session * * @return boolean * * @see session_abort() * @since 2.0.0 */ public function abort(): bool { if (!$this->isActive()) { return true; } return $this->store->abort(); } /** * Create a token string * * @return string * * @since 1.3.1 */ protected function createToken(): string { /* * We are returning a 32 character string. * The bin2hex() function will double the length of the hexadecimal value returned by random_bytes(), * so generate the token from a 16 byte random value */ return bin2hex(random_bytes(16)); } /** * Set counter of session usage * * @return boolean True on success * * @since 1.0 */ protected function setCounter() { $counter = $this->get('session.counter', 0); $counter++; $this->set('session.counter', $counter); return true; } /** * Set the session expiration * * @param integer $expire Maximum age of unused session in seconds * * @return $this * * @since 1.3.0 */ protected function setExpire($expire) { $this->expire = $expire; return $this; } /** * Set the session state * * @param string $state Internal state * * @return $this * * @since 1.3.0 */ protected function setState($state) { $this->state = $state; return $this; } /** * Set the session timers * * @return boolean True on success * * @since 1.0 */ protected function setTimers() { if (!$this->has('session.timer.start')) { $start = time(); $this->set('session.timer.start', $start); $this->set('session.timer.last', $start); $this->set('session.timer.now', $start); } $this->set('session.timer.last', $this->get('session.timer.now')); $this->set('session.timer.now', time()); return true; } /** * Set additional session options * * @param array $options List of parameter * * @return boolean True on success * * @since 1.0 */ protected function setOptions(array $options) { // Set name if (isset($options['name'])) { $this->setName($options['name']); } // Set id if (isset($options['id'])) { $this->setId($options['id']); } // Set expire time if (isset($options['expire'])) { $this->setExpire($options['expire']); } // Sync the session maxlifetime if (!headers_sent()) { ini_set('session.gc_maxlifetime', $this->getExpire()); } return true; } /** * Do some checks for security reasons * * If one check fails, session data has to be cleaned. * * @param boolean $restart Reactivate session * * @return boolean True on success * * @see http://shiflett.org/articles/the-truth-about-sessions * @since 1.0 */ protected function validate($restart = false) { // Allow to restart a session if ($restart) { $this->setState(SessionState::ACTIVE); } // Check if session has expired if ($this->expire) { $curTime = $this->get('session.timer.now', 0); $maxTime = $this->get('session.timer.last', 0) + $this->expire; // Empty session variables if ($maxTime < $curTime) { $this->setState(SessionState::EXPIRED); return false; } } try { foreach ($this->sessionValidators as $validator) { $validator->validate($restart); } } catch (Exception\InvalidSessionException $e) { $this->setState(SessionState::ERROR); return false; } return true; } } src/SessionState.php 0000644 00000003665 15173537206 0010513 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session; /** * Class defining the various states of a session * * @since 2.0.0 */ final class SessionState { /** * Private constructor to prevent instantiation of this class * * @since 2.0.0 */ private function __construct() { } /** * State indicating the session is active. * * A `SessionInterface` instance should be in this state once the session has started. * * @var string * @since 2.0.0 */ public const ACTIVE = 'active'; /** * State indicating the session is closed. * * A `SessionInterface` instance should be in this state after calling the `close()` method. * * @var string * @since 2.0.0 */ public const CLOSED = 'closed'; /** * State indicating the session is destroyed. * * A `SessionInterface` instance should be in this state after calling the `destroy()` method. * * @var string * @since 2.0.0 */ public const DESTROYED = 'destroyed'; /** * State indicating the session is in an error state. * * A `SessionInterface` instance should be in this state if the session cannot be validated after being started. * * @var string * @since 2.0.0 */ public const ERROR = 'error'; /** * State indicating the session is expired. * * A `SessionInterface` instance should be in this state if the session has passed the allowed lifetime. * A `SessionInterface` instance may be in this state if validating a session token fails. * * @var string * @since 2.0.0 */ public const EXPIRED = 'expired'; /** * State indicating the session is inactive. * * A `SessionInterface` instance should begin in this state. * * @var string * @since 2.0.0 */ public const INACTIVE = 'inactive'; } src/SessionEvent.php 0000644 00000002033 15173537206 0010500 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session; use Joomla\Event\Event; /** * Class representing a Session event * * @since 2.0.0 */ class SessionEvent extends Event { /** * SessionInterface object for this event * * @var SessionInterface * @since 2.0.0 */ private $session; /** * Constructor. * * @param string $name The event name. * @param SessionInterface $session The SessionInterface object for this event. * * @since 2.0.0 */ public function __construct(string $name, SessionInterface $session) { parent::__construct($name); $this->session = $session; } /** * Retrieve the SessionInterface object attached to this event. * * @return SessionInterface * * @since 2.0.0 */ public function getSession(): SessionInterface { return $this->session; } } src/ValidatorInterface.php 0000644 00000001162 15173537206 0011623 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session; /** * Interface for validating a part of the session * * @since 2.0.0 */ interface ValidatorInterface { /** * Validates the session * * @param boolean $restart Flag if the session should be restarted * * @return void * * @since 2.0.0 * @throws Exception\InvalidSessionException */ public function validate(bool $restart = false): void; } src/Exception/InvalidSessionException.php 0000644 00000000624 15173537206 0014626 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Exception; /** * Exception thrown when a session validator fails * * @since 2.0.0 */ class InvalidSessionException extends \RuntimeException { } src/Exception/CreateSessionTableException.php 0000644 00000000653 15173537206 0015415 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Exception; /** * Exception thrown when the database session table cannot be created * * @since 2.0.0 */ class CreateSessionTableException extends \RuntimeException { } src/Exception/UnsupportedDatabaseDriverException.php 0000644 00000000660 15173537206 0017025 0 ustar 00 <?php /** * Part of the Joomla Framework Session Package * * @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE */ namespace Joomla\Session\Exception; /** * Exception thrown when the database driver is unsupported * * @since 2.0.0 */ class UnsupportedDatabaseDriverException extends \UnexpectedValueException { } .drone.yml 0000644 00000021151 15173537206 0006465 0 ustar 00 --- { "kind": "pipeline", "name": "Codequality", "steps": [ { "commands": [ "php -v", "composer update", "composer require phpmd/phpmd phpstan/phpstan" ], "image": "joomlaprojects/docker-images:php7.4", "name": "composer", "volumes": [ { "name": "composer-cache", "path": "/tmp/composer-cache" } ] }, { "commands": [ "vendor/bin/phpcs --config-set installed_paths vendor/joomla/coding-standards", "vendor/bin/phpcs --standard=ruleset.xml src/" ], "depends": [ "composer" ], "image": "joomlaprojects/docker-images:php7.4", "name": "phpcs" }, { "commands": [ "vendor/bin/phpmd src text cleancode", "vendor/bin/phpmd src text codesize", "vendor/bin/phpmd src text controversial", "vendor/bin/phpmd src text design", "vendor/bin/phpmd src text unusedcode" ], "depends": [ "composer" ], "failure": "ignore", "image": "joomlaprojects/docker-images:php7.4", "name": "phpmd" }, { "commands": [ "vendor/bin/phpstan analyse src" ], "depends": [ "composer" ], "failure": "ignore", "image": "joomlaprojects/docker-images:php7.4", "name": "phpstan" }, { "commands": [ "phploc src" ], "depends": [ "composer" ], "failure": "ignore", "image": "joomlaprojects/docker-images:php7.4", "name": "phploc" }, { "commands": [ "phpcpd src" ], "depends": [ "composer" ], "failure": "ignore", "image": "joomlaprojects/docker-images:php7.4", "name": "phpcpd" } ], "volumes": [ { "host": { "path": "/tmp/composer-cache" }, "name": "composer-cache" } ] } --- { "kind": "pipeline", "name": "PHP 7.2 lowest", "services": [ { "image": "memcached:alpine", "name": "memcached" }, { "image": "redis:alpine", "name": "redis" } ], "steps": [ { "commands": [ "php -v", "composer update --prefer-stable --prefer-lowest" ], "image": "joomlaprojects/docker-images:php7.2", "name": "composer", "volumes": [ { "name": "composer-cache", "path": "/tmp/composer-cache" } ] }, { "commands": [ "vendor/bin/phpunit" ], "image": "joomlaprojects/docker-images:php7.2", "name": "PHPUnit" } ], "volumes": [ { "host": { "path": "/tmp/composer-cache" }, "name": "composer-cache" } ] } --- { "kind": "pipeline", "name": "PHP 7.2", "services": [ { "image": "memcached:alpine", "name": "memcached" }, { "image": "redis:alpine", "name": "redis" } ], "steps": [ { "commands": [ "php -v", "composer update --prefer-stable" ], "image": "joomlaprojects/docker-images:php7.2", "name": "composer", "volumes": [ { "name": "composer-cache", "path": "/tmp/composer-cache" } ] }, { "commands": [ "vendor/bin/phpunit" ], "image": "joomlaprojects/docker-images:php7.2", "name": "PHPUnit" } ], "volumes": [ { "host": { "path": "/tmp/composer-cache" }, "name": "composer-cache" } ] } --- { "kind": "pipeline", "name": "PHP 7.3", "services": [ { "image": "memcached:alpine", "name": "memcached" }, { "image": "redis:alpine", "name": "redis" } ], "steps": [ { "commands": [ "php -v", "composer update --prefer-stable" ], "image": "joomlaprojects/docker-images:php7.3", "name": "composer", "volumes": [ { "name": "composer-cache", "path": "/tmp/composer-cache" } ] }, { "commands": [ "vendor/bin/phpunit" ], "image": "joomlaprojects/docker-images:php7.3", "name": "PHPUnit" } ], "volumes": [ { "host": { "path": "/tmp/composer-cache" }, "name": "composer-cache" } ] } --- { "kind": "pipeline", "name": "PHP 7.4", "services": [ { "image": "memcached:alpine", "name": "memcached" }, { "image": "redis:alpine", "name": "redis" } ], "steps": [ { "commands": [ "php -v", "composer update --prefer-stable" ], "image": "joomlaprojects/docker-images:php7.4", "name": "composer", "volumes": [ { "name": "composer-cache", "path": "/tmp/composer-cache" } ] }, { "commands": [ "vendor/bin/phpunit" ], "image": "joomlaprojects/docker-images:php7.4", "name": "PHPUnit" } ], "volumes": [ { "host": { "path": "/tmp/composer-cache" }, "name": "composer-cache" } ] } --- { "kind": "pipeline", "name": "PHP 8.0", "services": [ { "image": "memcached:alpine", "name": "memcached" }, { "image": "redis:alpine", "name": "redis" } ], "steps": [ { "commands": [ "php -v", "composer update --prefer-stable" ], "image": "joomlaprojects/docker-images:php8.0", "name": "composer", "volumes": [ { "name": "composer-cache", "path": "/tmp/composer-cache" } ] }, { "commands": [ "vendor/bin/phpunit" ], "image": "joomlaprojects/docker-images:php8.0", "name": "PHPUnit" } ], "volumes": [ { "host": { "path": "/tmp/composer-cache" }, "name": "composer-cache" } ] } --- { "kind": "pipeline", "name": "PHP 8.1", "services": [ { "image": "memcached:alpine", "name": "memcached" }, { "image": "redis:alpine", "name": "redis" } ], "steps": [ { "commands": [ "php -v", "composer update --prefer-stable" ], "image": "joomlaprojects/docker-images:php8.1", "name": "composer", "volumes": [ { "name": "composer-cache", "path": "/tmp/composer-cache" } ] }, { "commands": [ "vendor/bin/phpunit" ], "image": "joomlaprojects/docker-images:php8.1", "name": "PHPUnit" } ], "volumes": [ { "host": { "path": "/tmp/composer-cache" }, "name": "composer-cache" } ] } --- { "kind": "pipeline", "name": "PHP 8.2", "services": [ { "image": "memcached:alpine", "name": "memcached" }, { "image": "redis:alpine", "name": "redis" } ], "steps": [ { "commands": [ "php -v", "composer update --prefer-stable --ignore-platform-reqs" ], "image": "joomlaprojects/docker-images:php8.2", "name": "composer", "volumes": [ { "name": "composer-cache", "path": "/tmp/composer-cache" } ] }, { "commands": [ "vendor/bin/phpunit" ], "failure": "ignore", "image": "joomlaprojects/docker-images:php8.2", "name": "PHPUnit" } ], "volumes": [ { "host": { "path": "/tmp/composer-cache" }, "name": "composer-cache" } ] } --- kind: signature hmac: 7b4c99661032efaac3aa1e3012dbb078a5c838693cfe069901f74f55faabcc56 ... meta/sql/sqlite.sql 0000644 00000000246 15173537206 0010326 0 ustar 00 CREATE TABLE `#__session` ( `session_id` TEXT NOT NULL, `time` INTEGER NOT NULL, `data` BLOB NOT NULL, CONSTRAINT `idx_session` PRIMARY KEY (`session_id`) ); meta/sql/pgsql.sql 0000644 00000000226 15173537206 0010151 0 ustar 00 CREATE TABLE "#__session" ( "session_id" VARCHAR(128) NOT NULL, "time" INTEGER NOT NULL, "data" BYTEA NOT NULL, PRIMARY KEY ("session_id") ); meta/sql/mysql.sql 0000644 00000000321 15173537206 0010164 0 ustar 00 CREATE TABLE IF NOT EXISTS `#__session` ( `session_id` VARBINARY(128) NOT NULL, `time` INTEGER UNSIGNED NOT NULL, `data` BLOB NOT NULL, PRIMARY KEY (`session_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; meta/sql/sqlsrv.sql 0000644 00000000563 15173537206 0010361 0 ustar 00 CREATE TABLE [#__session] ( [session_id] VARCHAR(128) NOT NULL, [time] INTEGER NOT NULL, [data] VARBINARY(MAX) NOT NULL, CONSTRAINT [PK_#__session_session_id] PRIMARY KEY CLUSTERED ( [session_id] ASC ) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY]; .drone.jsonnet 0000644 00000007124 15173537206 0007350 0 ustar 00 local volumes = [ { name: "composer-cache", path: "/tmp/composer-cache", }, ]; local hostvolumes = [ { name: "composer-cache", host: {path: "/tmp/composer-cache"} }, ]; local composer(phpversion, params) = { name: "composer", image: "joomlaprojects/docker-images:php" + phpversion, volumes: volumes, commands: [ "php -v", "composer update " + params, ] }; local phpunit(phpversion) = { name: "PHPUnit", image: "joomlaprojects/docker-images:php" + phpversion, [if phpversion == "8.2" then "failure"]: "ignore", commands: ["vendor/bin/phpunit"] }; local pipeline(name, phpversion, params) = { kind: "pipeline", name: "PHP " + name, volumes: hostvolumes, steps: [ composer(phpversion, params), phpunit(phpversion) ], services: [ { name: "memcached", image: "memcached:alpine" }, { name:"redis", image: "redis:alpine" } ] }; [ { kind: "pipeline", name: "Codequality", volumes: hostvolumes, steps: [ { name: "composer", image: "joomlaprojects/docker-images:php7.4", volumes: volumes, commands: [ "php -v", "composer update", "composer require phpmd/phpmd phpstan/phpstan" ] }, { name: "phpcs", image: "joomlaprojects/docker-images:php7.4", depends: [ "composer" ], commands: [ "vendor/bin/phpcs --config-set installed_paths vendor/joomla/coding-standards", "vendor/bin/phpcs --standard=ruleset.xml src/" ] }, { name: "phpmd", image: "joomlaprojects/docker-images:php7.4", depends: [ "composer" ], failure: "ignore", commands: [ "vendor/bin/phpmd src text cleancode", "vendor/bin/phpmd src text codesize", "vendor/bin/phpmd src text controversial", "vendor/bin/phpmd src text design", "vendor/bin/phpmd src text unusedcode", ] }, { name: "phpstan", image: "joomlaprojects/docker-images:php7.4", depends: [ "composer" ], failure: "ignore", commands: [ "vendor/bin/phpstan analyse src", ] }, { name: "phploc", image: "joomlaprojects/docker-images:php7.4", depends: [ "composer" ], failure: "ignore", commands: [ "phploc src", ] }, { name: "phpcpd", image: "joomlaprojects/docker-images:php7.4", depends: [ "composer" ], failure: "ignore", commands: [ "phpcpd src", ] } ] }, pipeline("7.2 lowest", "7.2", "--prefer-stable --prefer-lowest"), pipeline("7.2", "7.2", "--prefer-stable"), pipeline("7.3", "7.3", "--prefer-stable"), pipeline("7.4", "7.4", "--prefer-stable"), pipeline("8.0", "8.0", "--prefer-stable"), pipeline("8.1", "8.1", "--prefer-stable"), pipeline("8.2", "8.2", "--prefer-stable --ignore-platform-reqs"), ] LICENSE 0000644 00000042630 15173537206 0005567 0 ustar 00 GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Library General Public License instead.) You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. 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If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. 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You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. 2. 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You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following: a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer, in accord with Subsection b above.) The source code for a work means the preferred form of the work for making modifications to it. For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable. However, as a special exception, the source code distributed need not include anything that is normally distributed (in either source or binary form) with the major components (compiler, kernel, and so on) of the operating system on which the executable runs, unless that component itself accompanies the executable. If distribution of executable or object code is made by offering access to copy from a designated place, then offering equivalent access to copy the source code from the same place counts as distribution of the source code, even though third parties are not compelled to copy the source along with the object code. 4. You may not copy, modify, sublicense, or distribute the Program except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense or distribute the Program is void, and will automatically terminate your rights under this License. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties remain in full compliance. 5. You are not required to accept this License, since you have not signed it. However, nothing else grants you permission to modify or distribute the Program or its derivative works. These actions are prohibited by law if you do not accept this License. Therefore, by modifying or distributing the Program (or any work based on the Program), you indicate your acceptance of this License to do so, and all its terms and conditions for copying, distributing or modifying the Program or works based on it. 6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties to this License. 7. If, as a consequence of a court judgment or allegation of patent infringement or for any other reason (not limited to patent issues), conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not distribute the Program at all. For example, if a patent license would not permit royalty-free redistribution of the Program by all those who receive copies directly or indirectly through you, then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program. If any portion of this section is held invalid or unenforceable under any particular circumstance, the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances. It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims; this section has the sole purpose of protecting the integrity of the free software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice. This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License. 8. If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. <one line to give the program's name and a brief idea of what it does.> Copyright (C) <year> <name of author> 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. <signature of Ty Coon>, 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Library General Public License instead of this License.
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