-
Notifications
You must be signed in to change notification settings - Fork 3.4k
/
EncryptedCookieMiddleware.php
172 lines (155 loc) · 5.62 KB
/
EncryptedCookieMiddleware.php
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
169
170
171
172
<?php
declare(strict_types=1);
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.5.0
* @license https://www.opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Http\Middleware;
use Cake\Http\Cookie\CookieCollection;
use Cake\Http\Response;
use Cake\Utility\CookieCryptTrait;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;
/**
* Middleware for encrypting & decrypting cookies.
*
* This middleware layer will encrypt/decrypt the named cookies with the given key
* and cipher type. To support multiple keys/cipher types use this middleware multiple
* times.
*
* Cookies in request data will be decrypted, while cookies in response headers will
* be encrypted automatically. If the response is a {@link \Cake\Http\Response}, the cookie
* data set with `withCookie()` and `cookie()`` will also be encrypted.
*
* The encryption types and padding are compatible with those used by CookieComponent
* for backwards compatibility.
*/
class EncryptedCookieMiddleware implements MiddlewareInterface
{
use CookieCryptTrait;
/**
* The list of cookies to encrypt/decrypt
*
* @var list<string>
*/
protected array $cookieNames;
/**
* Encryption key to use.
*
* @var string
*/
protected string $key;
/**
* Encryption type.
*
* @var string
*/
protected string $cipherType;
/**
* Constructor
*
* @param list<string> $cookieNames The list of cookie names that should have their values encrypted.
* @param string $key The encryption key to use.
* @param string $cipherType The cipher type to use. Defaults to 'aes'.
*/
public function __construct(array $cookieNames, string $key, string $cipherType = 'aes')
{
$this->cookieNames = $cookieNames;
$this->key = $key;
$this->cipherType = $cipherType;
}
/**
* Apply cookie encryption/decryption.
*
* @param \Psr\Http\Message\ServerRequestInterface $request The request.
* @param \Psr\Http\Server\RequestHandlerInterface $handler The request handler.
* @return \Psr\Http\Message\ResponseInterface A response.
*/
public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
{
if ($request->getCookieParams()) {
$request = $this->decodeCookies($request);
}
$response = $handler->handle($request);
if ($response->hasHeader('Set-Cookie')) {
$response = $this->encodeSetCookieHeader($response);
}
if ($response instanceof Response) {
$response = $this->encodeCookies($response);
}
return $response;
}
/**
* Fetch the cookie encryption key.
*
* Part of the CookieCryptTrait implementation.
*
* @return string
*/
protected function _getCookieEncryptionKey(): string
{
return $this->key;
}
/**
* Decode cookies from the request.
*
* @param \Psr\Http\Message\ServerRequestInterface $request The request to decode cookies from.
* @return \Psr\Http\Message\ServerRequestInterface Updated request with decoded cookies.
*/
protected function decodeCookies(ServerRequestInterface $request): ServerRequestInterface
{
$cookies = $request->getCookieParams();
foreach ($this->cookieNames as $name) {
if (isset($cookies[$name])) {
$cookies[$name] = $this->_decrypt($cookies[$name], $this->cipherType, $this->key);
}
}
return $request->withCookieParams($cookies);
}
/**
* Encode cookies from a response's CookieCollection.
*
* @param \Cake\Http\Response $response The response to encode cookies in.
* @return \Cake\Http\Response Updated response with encoded cookies.
*/
protected function encodeCookies(Response $response): Response
{
foreach ($response->getCookieCollection() as $cookie) {
if (in_array($cookie->getName(), $this->cookieNames, true)) {
$value = $this->_encrypt($cookie->getValue(), $this->cipherType);
$response = $response->withCookie($cookie->withValue($value));
}
}
return $response;
}
/**
* Encode cookies from a response's Set-Cookie header
*
* @param \Psr\Http\Message\ResponseInterface $response The response to encode cookies in.
* @return \Psr\Http\Message\ResponseInterface Updated response with encoded cookies.
*/
protected function encodeSetCookieHeader(ResponseInterface $response): ResponseInterface
{
$cookies = CookieCollection::createFromHeader($response->getHeader('Set-Cookie'));
$header = [];
foreach ($cookies as $cookie) {
if (in_array($cookie->getName(), $this->cookieNames, true)) {
$value = $this->_encrypt($cookie->getValue(), $this->cipherType);
$cookie = $cookie->withValue($value);
}
$header[] = $cookie->toHeaderValue();
}
return $response->withHeader('Set-Cookie', $header);
}
}