AbstractSessionHandler.php
5.1 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
/**
* This abstract session handler provides a generic implementation
* of the PHP 7.0 SessionUpdateTimestampHandlerInterface,
* enabling strict and lazy session handling.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
abstract class AbstractSessionHandler implements \SessionHandlerInterface, \SessionUpdateTimestampHandlerInterface
{
private $sessionName;
private $prefetchId;
private $prefetchData;
private $newSessionId;
private $igbinaryEmptyData;
/**
* {@inheritdoc}
*/
public function open($savePath, $sessionName)
{
$this->sessionName = $sessionName;
if (!headers_sent() && !ini_get('session.cache_limiter') && '0' !== ini_get('session.cache_limiter')) {
header(sprintf('Cache-Control: max-age=%d, private, must-revalidate', 60 * (int) ini_get('session.cache_expire')));
}
return true;
}
/**
* @param string $sessionId
*
* @return string
*/
abstract protected function doRead($sessionId);
/**
* @param string $sessionId
* @param string $data
*
* @return bool
*/
abstract protected function doWrite($sessionId, $data);
/**
* @param string $sessionId
*
* @return bool
*/
abstract protected function doDestroy($sessionId);
/**
* {@inheritdoc}
*/
public function validateId($sessionId)
{
$this->prefetchData = $this->read($sessionId);
$this->prefetchId = $sessionId;
return '' !== $this->prefetchData;
}
/**
* {@inheritdoc}
*/
public function read($sessionId)
{
if (null !== $this->prefetchId) {
$prefetchId = $this->prefetchId;
$prefetchData = $this->prefetchData;
$this->prefetchId = $this->prefetchData = null;
if ($prefetchId === $sessionId || '' === $prefetchData) {
$this->newSessionId = '' === $prefetchData ? $sessionId : null;
return $prefetchData;
}
}
$data = $this->doRead($sessionId);
$this->newSessionId = '' === $data ? $sessionId : null;
if (\PHP_VERSION_ID < 70000) {
$this->prefetchData = $data;
}
return $data;
}
/**
* {@inheritdoc}
*/
public function write($sessionId, $data)
{
if (\PHP_VERSION_ID < 70000 && $this->prefetchData) {
$readData = $this->prefetchData;
$this->prefetchData = null;
if ($readData === $data) {
return $this->updateTimestamp($sessionId, $data);
}
}
if (null === $this->igbinaryEmptyData) {
// see https://github.com/igbinary/igbinary/issues/146
$this->igbinaryEmptyData = \function_exists('igbinary_serialize') ? igbinary_serialize(array()) : '';
}
if ('' === $data || $this->igbinaryEmptyData === $data) {
return $this->destroy($sessionId);
}
$this->newSessionId = null;
return $this->doWrite($sessionId, $data);
}
/**
* {@inheritdoc}
*/
public function destroy($sessionId)
{
if (\PHP_VERSION_ID < 70000) {
$this->prefetchData = null;
}
if (!headers_sent() && filter_var(ini_get('session.use_cookies'), FILTER_VALIDATE_BOOLEAN)) {
if (!$this->sessionName) {
throw new \LogicException(sprintf('Session name cannot be empty, did you forget to call "parent::open()" in "%s"?.', \get_class($this)));
}
$sessionCookie = sprintf(' %s=', urlencode($this->sessionName));
$sessionCookieWithId = sprintf('%s%s;', $sessionCookie, urlencode($sessionId));
$sessionCookieFound = false;
$otherCookies = array();
foreach (headers_list() as $h) {
if (0 !== stripos($h, 'Set-Cookie:')) {
continue;
}
if (11 === strpos($h, $sessionCookie, 11)) {
$sessionCookieFound = true;
if (11 !== strpos($h, $sessionCookieWithId, 11)) {
$otherCookies[] = $h;
}
} else {
$otherCookies[] = $h;
}
}
if ($sessionCookieFound) {
header_remove('Set-Cookie');
foreach ($otherCookies as $h) {
header($h, false);
}
} else {
setcookie($this->sessionName, '', 0, ini_get('session.cookie_path'), ini_get('session.cookie_domain'), filter_var(ini_get('session.cookie_secure'), FILTER_VALIDATE_BOOLEAN), filter_var(ini_get('session.cookie_httponly'), FILTER_VALIDATE_BOOLEAN));
}
}
return $this->newSessionId === $sessionId || $this->doDestroy($sessionId);
}
}