2 // Session management functions. These provide database storage of PHP
5 use Friendica\Core\Config;
7 require_once('include/cache.php');
10 $session_expire = 180000;
12 function ref_session_open($s, $n) {
16 function ref_session_read($id) {
17 global $session_exists;
23 $memcache = cache::memcache();
24 if (is_object($memcache)) {
25 $data = $memcache->get(get_app()->get_hostname().":session:".$id);
26 if (!is_bool($data)) {
29 logger("no data for session $id", LOGGER_TRACE);
33 $r = q("SELECT `data` FROM `session` WHERE `sid`= '%s'", dbesc($id));
35 if (dbm::is_result($r)) {
36 $session_exists = true;
39 logger("no data for session $id", LOGGER_TRACE);
46 * @brief Standard PHP session write callback
48 * This callback updates the DB-stored session data and/or the expiration depending
49 * on the case. Uses the $session_expire global for existing session, 5 minutes
50 * for newly created session.
52 * @global bool $session_exists Whether a session with the given id already exists
53 * @global int $session_expire Session expiration delay in seconds
54 * @param string $id Session ID with format: [a-z0-9]{26}
55 * @param string $data Serialized session data
56 * @return boolean Returns false if parameters are missing, true otherwise
58 function ref_session_write($id, $data) {
59 global $session_exists, $session_expire;
65 $expire = time() + $session_expire;
66 $default_expire = time() + 300;
68 $memcache = cache::memcache();
70 if (is_object($memcache) && is_object($a)) {
71 $memcache->set($a->get_hostname().":session:".$id, $data, MEMCACHE_COMPRESSED, $expire);
75 if ($session_exists) {
76 $r = q("UPDATE `session`
77 SET `data` = '%s', `expire` = '%s'
79 AND (`data` != '%s' OR `expire` != '%s')",
80 dbesc($data), dbesc($expire), dbesc($id), dbesc($data), dbesc($expire));
82 $r = q("INSERT INTO `session`
83 SET `sid` = '%s', `expire` = '%s', `data` = '%s'",
84 dbesc($id), dbesc($default_expire), dbesc($data));
90 function ref_session_close() {
94 function ref_session_destroy($id) {
95 $memcache = cache::memcache();
97 if (is_object($memcache)) {
98 $memcache->delete(get_app()->get_hostname().":session:".$id);
102 q("DELETE FROM `session` WHERE `sid` = '%s'", dbesc($id));
107 function ref_session_gc($expire) {
108 q("DELETE FROM `session` WHERE `expire` < %d", dbesc(time()));
113 $gc_probability = 50;
115 ini_set('session.gc_probability', $gc_probability);
116 ini_set('session.use_only_cookies', 1);
117 ini_set('session.cookie_httponly', 1);
119 if (Config::get('system', 'ssl_policy') == SSL_POLICY_FULL) {
120 ini_set('session.cookie_secure', 1);
123 if (!get_config('system', 'disable_database_session')) {
124 session_set_save_handler('ref_session_open', 'ref_session_close',
125 'ref_session_read', 'ref_session_write',
126 'ref_session_destroy', 'ref_session_gc');