|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/** |
|
4
|
|
|
* THttpHeaderCSP class |
|
5
|
|
|
* |
|
6
|
|
|
* @author Fabio Bas <ctrlaltca[at]gmail[dot]com> |
|
7
|
|
|
* @link https://github.com/pradosoft/prado |
|
8
|
|
|
* @license https://github.com/pradosoft/prado/blob/master/LICENSE |
|
9
|
|
|
*/ |
|
10
|
|
|
|
|
11
|
|
|
namespace Prado\Web; |
|
12
|
|
|
|
|
13
|
|
|
use Prado\Prado; |
|
14
|
|
|
|
|
15
|
|
|
/** |
|
16
|
|
|
* THttpHeaderCSP class. |
|
17
|
|
|
* |
|
18
|
|
|
* THttpHeaderCSP adds a Content-security-policy header to all responses. |
|
19
|
|
|
* If you want to use this header, load your manager class |
|
20
|
|
|
* {@see \Prado\Web\THttpHeadersManager THttpHeadersManager}, |
|
21
|
|
|
* add this class as an header and define the needed policies, eg.: |
|
22
|
|
|
* |
|
23
|
|
|
* ```xml |
|
24
|
|
|
* <module id="headers" class="THttpHeadersManager"> |
|
25
|
|
|
* <header Name="Strict-Transport-Security" Value="max-age=31536000" /> |
|
26
|
|
|
* <header Name="X-Content-Type-Options" Value="nosniff" /> |
|
27
|
|
|
* <header Name="X-Frame-Options" Value="DENY" /> |
|
28
|
|
|
* <header class="THttpHeaderCSP"> |
|
29
|
|
|
* <policy Name="default-src">'self' 'unsafe-inline' www.gstatic.com NONCE</policy> |
|
30
|
|
|
* <policy Name="frame-src">'self' www.google.com</policy> |
|
31
|
|
|
* </header> |
|
32
|
|
|
* </module> |
|
33
|
|
|
* <module id="response" class="THttpResponse" HeadersManager="headers" /> |
|
34
|
|
|
* ``` |
|
35
|
|
|
* |
|
36
|
|
|
* The special value {@see \Prado\Web\THttpHeaderCSP::NONCE NONCE} will get |
|
37
|
|
|
* automatically replaced with a valid Content-security-policy nonce. |
|
38
|
|
|
* |
|
39
|
|
|
* @author Fabio Bas <ctrlaltca[at]gmail[dot]com> |
|
40
|
|
|
* @since 4.3.2 |
|
41
|
|
|
*/ |
|
42
|
|
|
class THttpHeaderCSP extends \Prado\Web\THttpHeader |
|
43
|
|
|
{ |
|
44
|
|
|
/** |
|
45
|
|
|
* @var string[] list of key:value policies. |
|
46
|
|
|
*/ |
|
47
|
|
|
protected $_policies = []; |
|
48
|
|
|
|
|
49
|
|
|
public const NONCE = 'NONCE'; |
|
50
|
|
|
|
|
51
|
|
|
/** |
|
52
|
|
|
* Initializes the CSP header. |
|
53
|
|
|
* @param \Prado\Xml\TXmlElement $config configuration for this module. |
|
54
|
|
|
*/ |
|
55
|
|
|
public function init($config) |
|
56
|
|
|
{ |
|
57
|
|
|
parent::init($config); |
|
58
|
|
|
$this->loadPolicies($config); |
|
59
|
|
|
} |
|
60
|
|
|
|
|
61
|
|
|
/** |
|
62
|
|
|
* Load and configure each header. |
|
63
|
|
|
* @param mixed $config configuration node |
|
64
|
|
|
*/ |
|
65
|
|
|
protected function loadPolicies($config) |
|
66
|
|
|
{ |
|
67
|
|
|
if (is_array($config)) { |
|
68
|
|
|
if (isset($config['policies']) && is_array($config['policies'])) { |
|
69
|
|
|
foreach ($config['policies'] as $policy) { |
|
70
|
|
|
$name = $policy['name']; |
|
71
|
|
|
$this->_policies[$name] = $policy['value']; |
|
72
|
|
|
} |
|
73
|
|
|
} |
|
74
|
|
|
} else { |
|
75
|
|
|
foreach ($config->getElementsByTagName('policy') as $header) { |
|
76
|
|
|
$properties = $header->getAttributes(); |
|
77
|
|
|
$name = $properties->remove('Name'); |
|
78
|
|
|
$this->_policies[$name] = $header->getValue(); |
|
79
|
|
|
} |
|
80
|
|
|
} |
|
81
|
|
|
} |
|
82
|
|
|
|
|
83
|
|
|
/** |
|
84
|
|
|
* @return string the textual name of the header. |
|
85
|
|
|
*/ |
|
86
|
|
|
public function getName() |
|
87
|
|
|
{ |
|
88
|
|
|
return 'Content-Security-Policy'; |
|
89
|
|
|
} |
|
90
|
|
|
|
|
91
|
|
|
/** |
|
92
|
|
|
* @return string the textual value of the header. |
|
93
|
|
|
*/ |
|
94
|
|
|
public function getValue() |
|
95
|
|
|
{ |
|
96
|
|
|
$nonce = '\'nonce-' . Prado::getApplication()->getSecurityManager()->getCSPNonce() . '\''; |
|
97
|
|
|
$ret = ''; |
|
98
|
|
|
foreach ($this->_policies as $name => $value) { |
|
99
|
|
|
$ret .= $name . ' ' . str_replace(self::NONCE, $nonce, $value) . '; '; |
|
100
|
|
|
} |
|
101
|
|
|
return $ret; |
|
102
|
|
|
} |
|
103
|
|
|
} |
|
104
|
|
|
|
pradosoft /
prado
