2 // Session management functions. These provide database storage of PHP
5 use Friendica\Core\Config;
6 use Friendica\Database\DBM;
8 require_once('include/cache.php');
11 $session_expire = 180000;
13 function ref_session_open($s, $n) {
17 function ref_session_read($id) {
18 global $session_exists;
24 $memcache = cache::memcache();
25 if (is_object($memcache)) {
26 $data = $memcache->get(get_app()->get_hostname().":session:".$id);
27 if (!is_bool($data)) {
28 $session_exists = true;
31 logger("no data for session $id", LOGGER_TRACE);
35 $r = dba::select('session', array('data'), array('sid' => $id), array('limit' => 1));
36 if (DBM::is_result($r)) {
37 $session_exists = true;
40 logger("no data for session $id", LOGGER_TRACE);
47 * @brief Standard PHP session write callback
49 * This callback updates the DB-stored session data and/or the expiration depending
50 * on the case. Uses the $session_expire global for existing session, 5 minutes
51 * for newly created session.
53 * @global bool $session_exists Whether a session with the given id already exists
54 * @global int $session_expire Session expiration delay in seconds
55 * @param string $id Session ID with format: [a-z0-9]{26}
56 * @param string $data Serialized session data
57 * @return boolean Returns false if parameters are missing, true otherwise
59 function ref_session_write($id, $data) {
60 global $session_exists, $session_expire;
66 $expire = time() + $session_expire;
67 $default_expire = time() + 300;
69 $memcache = cache::memcache();
71 if (is_object($memcache) && is_object($a)) {
72 $memcache->set($a->get_hostname().":session:".$id, $data, MEMCACHE_COMPRESSED, $expire);
76 if ($session_exists) {
77 $fields = array('data' => $data, 'expire' => $expire);
78 $condition = array("`sid` = ? AND (`data` != ? OR `expire` != ?)", $id, $data, $expire);
79 dba::update('session', $fields, $condition);
81 $fields = array('sid' => $id, 'expire' => $default_expire, 'data' => $data);
82 dba::insert('session', $fields);
88 function ref_session_close() {
92 function ref_session_destroy($id) {
93 $memcache = cache::memcache();
95 if (is_object($memcache)) {
96 $memcache->delete(get_app()->get_hostname().":session:".$id);
100 dba::delete('session', array('sid' => $id));
104 function ref_session_gc($expire) {
105 dba::delete('session', array("`expire` < ?", time()));
109 $gc_probability = 50;
111 ini_set('session.gc_probability', $gc_probability);
112 ini_set('session.use_only_cookies', 1);
113 ini_set('session.cookie_httponly', 1);
115 if (Config::get('system', 'ssl_policy') == SSL_POLICY_FULL) {
116 ini_set('session.cookie_secure', 1);
119 if (!Config::get('system', 'disable_database_session')) {
120 session_set_save_handler('ref_session_open', 'ref_session_close',
121 'ref_session_read', 'ref_session_write',
122 'ref_session_destroy', 'ref_session_gc');