| | |
| | | private $ip; |
| | | private $start; |
| | | private $changed; |
| | | private $time_diff = 0; |
| | | private $reloaded = false; |
| | | private $unsets = array(); |
| | | private $gc_handlers = array(); |
| | | private $cookiename = 'roundcube_sessauth'; |
| | |
| | | private $secret = ''; |
| | | private $ip_check = false; |
| | | private $logging = false; |
| | | private $storage; |
| | | private $memcache; |
| | | |
| | | |
| | |
| | | $this->set_lifetime($lifetime); |
| | | |
| | | // use memcache backend |
| | | if ($config->get('session_storage', 'db') == 'memcache') { |
| | | $this->storage = $config->get('session_storage', 'db'); |
| | | if ($this->storage == 'memcache') { |
| | | $this->memcache = rcube::get_instance()->get_memcache(); |
| | | |
| | | // set custom functions for PHP session management if memcache is available |
| | | if ($this->memcache) { |
| | | ini_set('session.serialize_handler', 'php'); |
| | | |
| | | session_set_save_handler( |
| | | array($this, 'open'), |
| | | array($this, 'close'), |
| | |
| | | true, true); |
| | | } |
| | | } |
| | | else { |
| | | else if ($this->storage != 'php') { |
| | | ini_set('session.serialize_handler', 'php'); |
| | | |
| | | // set custom functions for PHP session management |
| | | session_set_save_handler( |
| | | array($this, 'open'), |
| | |
| | | array($this, 'db_read'), |
| | | array($this, 'db_write'), |
| | | array($this, 'db_destroy'), |
| | | array($this, 'db_gc')); |
| | | array($this, 'gc')); |
| | | } |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Wrapper for session_start() |
| | | */ |
| | | public function start() |
| | | { |
| | | session_start(); |
| | | |
| | | // copy some session properties to object vars |
| | | if ($this->storage == 'php') { |
| | | $this->key = session_id(); |
| | | $this->ip = $_SESSION['__IP']; |
| | | $this->changed = $_SESSION['__MTIME']; |
| | | } |
| | | } |
| | | |
| | |
| | | |
| | | |
| | | /** |
| | | * Wrapper for session_write_close() |
| | | */ |
| | | public function write_close() |
| | | { |
| | | if ($this->storage == 'php') { |
| | | $_SESSION['__IP'] = $this->ip; |
| | | $_SESSION['__MTIME'] = time(); |
| | | } |
| | | |
| | | session_write_close(); |
| | | |
| | | // write_close() is called on script shutdown, see rcube::shutdown() |
| | | // execute cleanup functionality if enabled by session gc handler |
| | | // we do this after closing the session for better performance |
| | | $this->gc_shutdown(); |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Read session data from database |
| | | * |
| | | * @param string Session ID |
| | |
| | | public function db_read($key) |
| | | { |
| | | $sql_result = $this->db->query( |
| | | "SELECT vars, ip, changed FROM ".$this->db->table_name('session') |
| | | ." WHERE sess_id = ?", $key); |
| | | "SELECT vars, ip, changed, " . $this->db->now() . " AS ts" |
| | | . " FROM " . $this->db->table_name('session') |
| | | . " WHERE sess_id = ?", $key); |
| | | |
| | | if ($sql_result && ($sql_arr = $this->db->fetch_assoc($sql_result))) { |
| | | $this->changed = strtotime($sql_arr['changed']); |
| | | $this->ip = $sql_arr['ip']; |
| | | $this->vars = base64_decode($sql_arr['vars']); |
| | | $this->key = $key; |
| | | $this->time_diff = time() - strtotime($sql_arr['ts']); |
| | | $this->changed = strtotime($sql_arr['changed']); |
| | | $this->ip = $sql_arr['ip']; |
| | | $this->vars = base64_decode($sql_arr['vars']); |
| | | $this->key = $key; |
| | | |
| | | return !empty($this->vars) ? (string) $this->vars : ''; |
| | | } |
| | |
| | | */ |
| | | public function db_write($key, $vars) |
| | | { |
| | | $ts = microtime(true); |
| | | $now = $this->db->fromunixtime((int)$ts); |
| | | $now = $this->db->now(); |
| | | $table = $this->db->table_name('session'); |
| | | $ts = microtime(true); |
| | | |
| | | // no session row in DB (db_read() returns false) |
| | | if (!$this->key) { |
| | |
| | | $newvars = $this->_fixvars($vars, $oldvars); |
| | | |
| | | if ($newvars !== $oldvars) { |
| | | $this->db->query( |
| | | sprintf("UPDATE %s SET vars=?, changed=%s WHERE sess_id=?", |
| | | $this->db->table_name('session'), $now), |
| | | base64_encode($newvars), $key); |
| | | $this->db->query("UPDATE $table " |
| | | . "SET changed = $now, vars = ? WHERE sess_id = ?", |
| | | base64_encode($newvars), $key); |
| | | } |
| | | else if ($ts - $this->changed > $this->lifetime / 2) { |
| | | $this->db->query("UPDATE ".$this->db->table_name('session') |
| | | ." SET changed=$now WHERE sess_id=?", $key); |
| | | else if ($ts - $this->changed + $this->time_diff > $this->lifetime / 2) { |
| | | $this->db->query("UPDATE $table SET changed = $now" |
| | | . " WHERE sess_id = ?", $key); |
| | | } |
| | | } |
| | | else { |
| | | $this->db->query( |
| | | sprintf("INSERT INTO %s (sess_id, vars, ip, created, changed) ". |
| | | "VALUES (?, ?, ?, %s, %s)", |
| | | $this->db->table_name('session'), $now, $now), |
| | | $key, base64_encode($vars), (string)$this->ip); |
| | | $this->db->query("INSERT INTO $table (sess_id, vars, ip, created, changed)" |
| | | . " VALUES (?, ?, ?, $now, $now)", |
| | | $key, base64_encode($vars), (string)$this->ip); |
| | | } |
| | | |
| | | return true; |
| | |
| | | if ($oldvars !== null) { |
| | | $a_oldvars = $this->unserialize($oldvars); |
| | | if (is_array($a_oldvars)) { |
| | | foreach ((array)$this->unsets as $k) |
| | | unset($a_oldvars[$k]); |
| | | // remove unset keys on oldvars |
| | | foreach ((array)$this->unsets as $var) { |
| | | if (isset($a_oldvars[$var])) { |
| | | unset($a_oldvars[$var]); |
| | | } |
| | | else { |
| | | $path = explode('.', $var); |
| | | $k = array_pop($path); |
| | | $node = &$this->get_node($path, $a_oldvars); |
| | | unset($node[$k]); |
| | | } |
| | | } |
| | | |
| | | $newvars = $this->serialize(array_merge( |
| | | (array)$a_oldvars, (array)$this->unserialize($vars))); |
| | |
| | | $this->db->query(sprintf("DELETE FROM %s WHERE sess_id = ?", |
| | | $this->db->table_name('session')), $key); |
| | | } |
| | | |
| | | return true; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Garbage collecting function |
| | | * |
| | | * @param string Session lifetime in seconds |
| | | * @return boolean True on success |
| | | */ |
| | | public function db_gc($maxlifetime) |
| | | { |
| | | // just delete all expired sessions |
| | | $this->db->query( |
| | | sprintf("DELETE FROM %s WHERE changed < %s", |
| | | $this->db->table_name('session'), $this->db->fromunixtime(time() - $maxlifetime))); |
| | | |
| | | $this->gc(); |
| | | |
| | | return true; |
| | | } |
| | |
| | | /** |
| | | * Execute registered garbage collector routines |
| | | */ |
| | | public function gc() |
| | | public function gc($maxlifetime) |
| | | { |
| | | foreach ($this->gc_handlers as $fct) { |
| | | call_user_func($fct); |
| | | } |
| | | // move gc execution to the script shutdown function |
| | | // see rcube::shutdown() and rcube_session::write_close() |
| | | return $this->gc_enabled = $maxlifetime; |
| | | } |
| | | |
| | | |
| | |
| | | |
| | | |
| | | /** |
| | | * Garbage collector handler to run on script shutdown |
| | | */ |
| | | protected function gc_shutdown() |
| | | { |
| | | if ($this->gc_enabled) { |
| | | // just delete all expired sessions |
| | | if ($this->storage == 'db') { |
| | | $this->db->query("DELETE FROM " . $this->db->table_name('session') |
| | | . " WHERE changed < " . $this->db->now(-$this->gc_enabled)); |
| | | } |
| | | |
| | | foreach ($this->gc_handlers as $fct) { |
| | | call_user_func($fct); |
| | | } |
| | | } |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Generate and set new session id |
| | | * |
| | | * @param boolean $destroy If enabled the current session will be destroyed |
| | |
| | | |
| | | |
| | | /** |
| | | * Append the given value to the certain node in the session data array |
| | | * |
| | | * @param string Path denoting the session variable where to append the value |
| | | * @param string Key name under which to append the new value (use null for appending to an indexed list) |
| | | * @param mixed Value to append to the session data array |
| | | */ |
| | | public function append($path, $key, $value) |
| | | { |
| | | // re-read session data from DB because it might be outdated |
| | | if (!$this->reloaded && microtime(true) - $this->start > 0.5) { |
| | | $this->reload(); |
| | | $this->reloaded = true; |
| | | $this->start = microtime(true); |
| | | } |
| | | |
| | | $node = &$this->get_node(explode('.', $path), $_SESSION); |
| | | |
| | | if ($key !== null) $node[$key] = $value; |
| | | else $node[] = $value; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Unset a session variable |
| | | * |
| | | * @param string Varibale name |
| | | * @param string Variable name (can be a path denoting a certain node in the session array, e.g. compose.attachments.5) |
| | | * @return boolean True on success |
| | | */ |
| | | public function remove($var=null) |
| | |
| | | } |
| | | |
| | | $this->unsets[] = $var; |
| | | unset($_SESSION[$var]); |
| | | |
| | | if (isset($_SESSION[$var])) { |
| | | unset($_SESSION[$var]); |
| | | } |
| | | else { |
| | | $path = explode('.', $var); |
| | | $key = array_pop($path); |
| | | $node = &$this->get_node($path, $_SESSION); |
| | | unset($node[$key]); |
| | | } |
| | | |
| | | return true; |
| | | } |
| | |
| | | session_decode($data); |
| | | } |
| | | |
| | | /** |
| | | * Returns a reference to the node in data array referenced by the given path. |
| | | * e.g. ['compose','attachments'] will return $_SESSION['compose']['attachments'] |
| | | */ |
| | | private function &get_node($path, &$data_arr) |
| | | { |
| | | $node = &$data_arr; |
| | | if (!empty($path)) { |
| | | foreach ((array)$path as $key) { |
| | | if (!isset($node[$key])) |
| | | $node[$key] = array(); |
| | | $node = &$node[$key]; |
| | | } |
| | | } |
| | | |
| | | return $node; |
| | | } |
| | | |
| | | /** |
| | | * Serialize session data |