From ed1d212ae2daea5e4bd043417610177093e99f19 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Sat, 16 Jan 2016 03:03:51 -0500
Subject: [PATCH] Improved SVG cleanup code

---
 program/lib/Roundcube/rcube_session_redis.php |   41 ++++++++++++++++++++---------------------
 1 files changed, 20 insertions(+), 21 deletions(-)

diff --git a/program/lib/Roundcube/rcube_session_redis.php b/program/lib/Roundcube/rcube_session_redis.php
index 07a91cc..7a72b1f 100644
--- a/program/lib/Roundcube/rcube_session_redis.php
+++ b/program/lib/Roundcube/rcube_session_redis.php
@@ -1,20 +1,17 @@
 <?php
 
-/*
+/**
  +-----------------------------------------------------------------------+
  | This file is part of the Roundcube Webmail client                     |
  | Copyright (C) 2005-2014, The Roundcube Dev Team                       |
- | Copyright (C) 2011, Kolab Systems AG                                  |
  |                                                                       |
  | 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 database supported session management                       |
+ |   Provide redis supported session management                          |
  +-----------------------------------------------------------------------+
- | Author: Thomas Bruederli <roundcube@gmail.com>                        |
- | Author: Aleksander Machniak <alec@alec.pl>                            |
  | Author: Cor Bosman <cor@roundcu.be>                                   |
  +-----------------------------------------------------------------------+
 */
@@ -30,12 +27,17 @@
 
     private $redis;
 
-    public function __construct()
+    /**
+     * @param Object $config
+     */
+    public function __construct($config)
     {
+        parent::__construct($config);
+
         // instantiate Redis object
         $this->redis = new Redis();
 
-        if (! $this->redis) {
+        if (!$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"),
@@ -43,10 +45,10 @@
         }
 
         // get config instance
-        $hosts = rcube::get_instance()->config->get('redis_hosts', array());
+        $hosts = $this->config->get('redis_hosts', array('localhost'));
 
         // host config is wrong
-        if (!is_array($hosts) || empty($hosts) ) {
+        if (!is_array($hosts) || empty($hosts)) {
             rcube::raise_error(array('code' => 604, 'type' => 'session',
                                    'line' => __LINE__, 'file' => __FILE__,
                                    'message' => "Redis host not configured"),
@@ -61,9 +63,9 @@
                                true, true);
         }
 
-        foreach($hosts as $config) {
+        foreach ($hosts as $host) {
             // explode individual fields
-            list($host, $port, $database, $password) = array_pad(explode(':', $config, 4), 4, null);
+            list($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';
@@ -115,7 +117,6 @@
 
         // register sessions handler
         $this->register_session_handler();
-
     }
 
     /**
@@ -151,7 +152,6 @@
         return true;
     }
 
-
     /**
      * read data from redis store
      *
@@ -170,9 +170,8 @@
             return !empty($this->vars) ? (string) $this->vars : '';
         }
 
-        return null;
+        return '';
     }
-
 
     /**
      * write data to redis store
@@ -187,12 +186,12 @@
         $ts = microtime(true);
 
         if ($newvars !== $oldvars || $ts - $this->changed > $this->lifetime / 3) {
-            $this->redis->setex($key, $this->lifetime + 60, serialize(array('changed' => time(), 'ip' => $this->ip, 'vars' => $newvars)));
+            $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
@@ -203,8 +202,8 @@
      */
     public function write($key, $vars)
     {
-        return $this->redis->setex($key, $this->lifetime + 60, serialize(array('changed' => time(), 'ip' => $this->ip, 'vars' => $vars)));
+        $data = serialize(array('changed' => time(), 'ip' => $this->ip, 'vars' => $vars));
+
+        return $this->redis->setex($key, $this->lifetime + 60, $data);
     }
-
-
-}
\ No newline at end of file
+}

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