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comparison program/lib/Roundcube/rcube_session_memcache.php @ 0:4681f974d28b

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vanilla 1.3.3 distro, I hope
author Charlie Root
date Thu, 04 Jan 2018 15:52:31 -0500
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-1:000000000000 0:4681f974d28b
1 <?php
2
3 /**
4 +-----------------------------------------------------------------------+
5 | This file is part of the Roundcube Webmail client |
6 | Copyright (C) 2005-2014, The Roundcube Dev Team |
7 | Copyright (C) 2011, Kolab Systems AG |
8 | |
9 | Licensed under the GNU General Public License version 3 or |
10 | any later version with exceptions for skins & plugins. |
11 | See the README file for a full license statement. |
12 | |
13 | PURPOSE: |
14 | Provide database supported session management |
15 +-----------------------------------------------------------------------+
16 | Author: Thomas Bruederli <roundcube@gmail.com> |
17 | Author: Aleksander Machniak <alec@alec.pl> |
18 | Author: Cor Bosman <cor@roundcu.bet> |
19 +-----------------------------------------------------------------------+
20 */
21
22 /**
23 * Class to provide memcache session storage
24 *
25 * @package Framework
26 * @subpackage Core
27 * @author Thomas Bruederli <roundcube@gmail.com>
28 * @author Aleksander Machniak <alec@alec.pl>
29 * @author Cor Bosman <cor@roundcu.be>
30 */
31 class rcube_session_memcache extends rcube_session
32 {
33 private $memcache;
34 private $debug;
35
36 /**
37 * @param Object $config
38 */
39 public function __construct($config)
40 {
41 parent::__construct($config);
42
43 $this->memcache = rcube::get_instance()->get_memcache();
44 $this->debug = $config->get('memcache_debug');
45
46 if (!$this->memcache) {
47 rcube::raise_error(array(
48 'code' => 604, 'type' => 'db',
49 'line' => __LINE__, 'file' => __FILE__,
50 'message' => "Failed to connect to memcached. Please check configuration"),
51 true, true);
52 }
53
54 // register sessions handler
55 $this->register_session_handler();
56 }
57
58 /**
59 * @param $save_path
60 * @param $session_name
61 * @return bool
62 */
63 public function open($save_path, $session_name)
64 {
65 return true;
66 }
67
68 /**
69 * @return bool
70 */
71 public function close()
72 {
73 return true;
74 }
75
76 /**
77 * Handler for session_destroy() with memcache backend
78 *
79 * @param $key
80 * @return bool
81 */
82 public function destroy($key)
83 {
84 if ($key) {
85 // #1488592: use 2nd argument
86 $result = $this->memcache->delete($key, 0);
87
88 if ($this->debug) {
89 $this->debug('delete', $key, null, $result);
90 }
91 }
92
93 return true;
94 }
95
96 /**
97 * Read session data from memcache
98 *
99 * @param $key
100 * @return null|string
101 */
102 public function read($key)
103 {
104 if ($value = $this->memcache->get($key)) {
105 $arr = unserialize($value);
106 $this->changed = $arr['changed'];
107 $this->ip = $arr['ip'];
108 $this->vars = $arr['vars'];
109 $this->key = $key;
110 }
111
112 if ($this->debug) {
113 $this->debug('get', $key, $value);
114 }
115
116 return $this->vars ?: '';
117 }
118
119 /**
120 * Write data to memcache storage
121 *
122 * @param $key
123 * @param $vars
124 *
125 * @return bool
126 */
127 public function write($key, $vars)
128 {
129 $data = serialize(array('changed' => time(), 'ip' => $this->ip, 'vars' => $vars));
130 $result = $this->memcache->set($key, $data, MEMCACHE_COMPRESSED, $this->lifetime + 60);
131
132 if ($this->debug) {
133 $this->debug('set', $key, $data, $result);
134 }
135
136 return $result;
137 }
138
139 /**
140 * Update memcache session data
141 *
142 * @param $key
143 * @param $newvars
144 * @param $oldvars
145 *
146 * @return bool
147 */
148 public function update($key, $newvars, $oldvars)
149 {
150 $ts = microtime(true);
151
152 if ($newvars !== $oldvars || $ts - $this->changed > $this->lifetime / 3) {
153 $data = serialize(array('changed' => time(), 'ip' => $this->ip, 'vars' => $newvars));
154 $result = $this->memcache->set($key, $data, MEMCACHE_COMPRESSED, $this->lifetime + 60);
155
156 if ($this->debug) {
157 $this->debug('set', $key, $data, $result);
158 }
159
160 return $result;
161 }
162
163 return true;
164 }
165
166 /**
167 * Write memcache debug info to the log
168 */
169 protected function debug($type, $key, $data = null, $result = null)
170 {
171 $line = strtoupper($type) . ' ' . $key;
172
173 if ($data !== null) {
174 $line .= ' ' . $data;
175 }
176
177 rcube::debug('memcache', $line, $result);
178 }
179 }