session refactor and add redis driver

corbosman

2015-02-19 4df4ab500788f0792b75baf1fa98e4647d713ed1

 program/lib/Roundcube/rcube.php

@@ -522,9 +522,12 @@
        ini_set('session.cookie_httponly', 1);

        // use database for storing session data
        $this->session = new rcube_session($this->get_dbh(), $this->config);
        $storage = $this->config->get('session_storage', 'db');
        $this->session = $this->get_session($storage);

        // register default gc handler
        $this->session->register_gc_handler(array($this, 'gc'));

        $this->session->set_secret($this->config->get('des_key') . dirname($_SERVER['SCRIPT_NAME']));
        $this->session->set_ip_check($this->config->get('ip_check'));

@@ -534,10 +537,32 @@

        // start PHP session (if not in CLI mode)
        if ($_SERVER['REMOTE_ADDR']) {
            $this->session->start();
            $this->session->start($this->config);
        }
    }

    /**
     * get an rcube_session instance
     *
     * @return rcube_session
     */
    private function get_session($storage)
    {
        // class name for this storage
        $class = "rcube_session_" . $storage;

        // try to instantiate class
        if(class_exists($class)) {
            return new $class();
        }

        // no storage found, raise error
        rcube::raise_error(array('code' => 604, 'type' => 'session',
                               'line' => __LINE__, 'file' => __FILE__,
                               'message' => "Failed to find session driver. Check session_storage config option"),
                           true, true);
    }


    /**
     * Garbage collector - cache/temp cleaner