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<?php |
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/** |
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* @package midcom.services |
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* @author The Midgard Project, http://www.midgard-project.org |
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* @copyright The Midgard Project, http://www.midgard-project.org |
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* @license http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License |
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*/ |
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use Symfony\Component\HttpFoundation\Session\Session; |
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use Symfony\Component\HttpFoundation\Session\Attribute\NamespacedAttributeBag; |
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use Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage; |
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/** |
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* Base singleton class of the MidCOM sessioning service. |
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* |
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* This is a singleton class, that is accessible through the MidCOM Service |
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* infrastructure. It manages session data of MidCOM driven applications. |
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* |
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* This class provides a generic interface to store keyed session values in the |
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* domain of the corresponding component. |
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* |
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* All requests involving this service will always be flagged as no_cache. |
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* |
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* If you store class instances within a session, which is perfectly safe in |
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* general, there are known problems due to the fact, that a class declaration |
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* has to be available before it can be deserialized. As PHP sessioning does this |
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* deserialization automatically, this might fail with MidCOM, where the sequence |
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* in which the code gets loaded and the sessioning gets started up is actually |
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* undefined. To get around this problems, the sessioning system stores not the |
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* actual data in the sessioning array, but a serialized string of the data, which |
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* can always be deserialized on PHP sessioning startup (its a string after all). |
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* This has an important implication though: The sessioning system always stores |
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* copies of the data, not references. So if you put something in to the session |
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* store and modify it afterwards, this change will not be reflected in the |
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* sessioning store. |
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* |
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* <b>Important:</b> |
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* |
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* Do <b>never</b> create an instance of this class directly. This is handled |
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* by the framework. Instead use midcom_service_session which ensures the |
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* singleton pattern. |
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* |
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* Do <b>never</b> work directly with the $_SESSION["midcom_session_data"] |
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* variable, this is a 100% must-not, as this will break functionality. |
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* |
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* @package midcom.services |
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* @see midcom_services_session |
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*/ |
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class midcom_services__sessioning extends Session |
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{ |
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public function __construct() |
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{ |
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parent::__construct($this->prepare_storage(), new NamespacedAttributeBag('midcom_session_data')); |
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} |
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protected function prepare_storage() |
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{ |
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$cookie_secure = ( !empty($_SERVER['HTTPS']) |
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&& $_SERVER['HTTPS'] !== 'off' |
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&& midcom::get()->config->get('auth_backend_simple_cookie_secure')); |
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return new NativeSessionStorage([ |
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'cookie_path' => midcom_connection::get_url('prefix') ?: '/', |
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'cookie_secure' => $cookie_secure, |
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'cookie_httponly' => true |
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]); |
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} |
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/** |
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* Returns a value from the session. |
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* |
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* Returns null if the key |
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* is non-existent. Note, that this is not necessarily a valid non-existence |
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* check, as the sessioning system does allow null values. Use the has function |
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* if unsure. |
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* |
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* @param string $key The key to query. |
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* @param mixed $default |
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* @return mixed The session key's data value, or null on failure. |
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*/ |
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public function get($key, $default = null) |
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{ |
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if ($this->has($key)) { |
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midcom::get()->cache->content->no_cache(); |
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} |
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return parent::get($key, $default); |
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} |
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/** |
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* This will store the value to the specified key. |
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* |
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* @param mixed $key Session value identifier. |
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* @param mixed $value Session value. |
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*/ |
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public function set($key, $value) |
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{ |
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midcom::get()->cache->content->no_cache(); |
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parent::set($key, $value); |
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} |
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} |
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flack /
openpsa
