<?php
|
|
/**
|
+-----------------------------------------------------------------------+
|
| This file is part of the Roundcube Webmail client |
|
| Copyright (C) 2005-2014, The Roundcube Dev Team |
|
| |
|
| Licensed under the GNU General Public License version 3 or |
|
| any later version with exceptions for skins & plugins. |
|
| See the README file for a full license statement. |
|
| |
|
| PURPOSE: |
|
| Provide redis supported session management |
|
+-----------------------------------------------------------------------+
|
| Author: Cor Bosman <cor@roundcu.be> |
|
+-----------------------------------------------------------------------+
|
*/
|
|
/**
|
* Class to provide redis session storage
|
*
|
* @package Framework
|
* @subpackage Core
|
* @author Cor Bosman <cor@roundcu.be>
|
*/
|
class rcube_session_redis extends rcube_session {
|
|
private $redis;
|
|
/**
|
* @param Object $config
|
*/
|
public function __construct($config)
|
{
|
parent::__construct($config);
|
|
// instantiate Redis object
|
$this->redis = new Redis();
|
|
if (!$this->redis) {
|
rcube::raise_error(array('code' => 604, 'type' => 'session',
|
'line' => __LINE__, 'file' => __FILE__,
|
'message' => "Failed to find Redis. Make sure php-redis is included"),
|
true, true);
|
}
|
|
// get config instance
|
$hosts = $this->config->get('redis_hosts', array('localhost'));
|
|
// host config is wrong
|
if (!is_array($hosts) || empty($hosts)) {
|
rcube::raise_error(array('code' => 604, 'type' => 'session',
|
'line' => __LINE__, 'file' => __FILE__,
|
'message' => "Redis host not configured"),
|
true, true);
|
}
|
|
// only allow 1 host for now until we support clustering
|
if (count($hosts) > 1) {
|
rcube::raise_error(array('code' => 604, 'type' => 'session',
|
'line' => __LINE__, 'file' => __FILE__,
|
'message' => "Redis cluster not yet supported"),
|
true, true);
|
}
|
|
foreach ($hosts as $host) {
|
// explode individual fields
|
list($host, $port, $database, $password) = array_pad(explode(':', $host, 4), 4, null);
|
|
// set default values if not set
|
$host = ($host !== null) ? $host : '127.0.0.1';
|
$port = ($port !== null) ? $port : 6379;
|
$database = ($database !== null) ? $database : 0;
|
|
if ($this->redis->connect($host, $port) === false) {
|
rcube::raise_error(
|
array(
|
'code' => 604,
|
'type' => 'session',
|
'line' => __LINE__,
|
'file' => __FILE__,
|
'message' => "Could not connect to Redis server. Please check host and port"
|
),
|
true,
|
true
|
);
|
}
|
|
if ($password != null && $this->redis->auth($password) === false) {
|
rcube::raise_error(
|
array(
|
'code' => 604,
|
'type' => 'session',
|
'line' => __LINE__,
|
'file' => __FILE__,
|
'message' => "Could not authenticate with Redis server. Please check password."
|
),
|
true,
|
true
|
);
|
}
|
|
if ($database != 0 && $this->redis->select($database) === false) {
|
rcube::raise_error(
|
array(
|
'code' => 604,
|
'type' => 'session',
|
'line' => __LINE__,
|
'file' => __FILE__,
|
'message' => "Could not select Redis database. Please check database setting."
|
),
|
true,
|
true
|
);
|
}
|
}
|
|
// register sessions handler
|
$this->register_session_handler();
|
}
|
|
/**
|
* @param $save_path
|
* @param $session_name
|
* @return bool
|
*/
|
public function open($save_path, $session_name)
|
{
|
return true;
|
}
|
|
/**
|
* @return bool
|
*/
|
public function close()
|
{
|
return true;
|
}
|
|
/**
|
* remove data from store
|
*
|
* @param $key
|
* @return bool
|
*/
|
public function destroy($key)
|
{
|
if ($key) {
|
$this->redis->del($key);
|
}
|
|
return true;
|
}
|
|
/**
|
* read data from redis store
|
*
|
* @param $key
|
* @return null
|
*/
|
public function read($key)
|
{
|
if ($value = $this->redis->get($key)) {
|
$arr = unserialize($value);
|
$this->changed = $arr['changed'];
|
$this->ip = $arr['ip'];
|
$this->vars = $arr['vars'];
|
$this->key = $key;
|
|
return !empty($this->vars) ? (string) $this->vars : '';
|
}
|
|
return '';
|
}
|
|
/**
|
* write data to redis store
|
*
|
* @param $key
|
* @param $newvars
|
* @param $oldvars
|
* @return bool
|
*/
|
public function update($key, $newvars, $oldvars)
|
{
|
$ts = microtime(true);
|
|
if ($newvars !== $oldvars || $ts - $this->changed > $this->lifetime / 3) {
|
$data = serialize(array('changed' => time(), 'ip' => $this->ip, 'vars' => $newvars));
|
$this->redis->setex($key, $this->lifetime + 60, $data);
|
}
|
|
return true;
|
}
|
|
/**
|
* write data to redis store
|
*
|
* @param $key
|
* @param $vars
|
* @return bool
|
*/
|
public function write($key, $vars)
|
{
|
$data = serialize(array('changed' => time(), 'ip' => $this->ip, 'vars' => $vars));
|
|
return $this->redis->setex($key, $this->lifetime + 60, $data);
|
}
|
}
|