|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace UMA\Psr\Http\Message\HMAC; |
|
4
|
|
|
|
|
5
|
|
|
use Psr\Http\Message\MessageInterface; |
|
6
|
|
|
use UMA\Psr\Http\Message\Internal\HashCalculator; |
|
7
|
|
|
use UMA\Psr\Http\Message\Internal\HeaderValidator; |
|
8
|
|
|
use UMA\Psr\Http\Message\Monitor\BlindMonitor; |
|
9
|
|
|
use UMA\Psr\Http\Message\Monitor\MonitorInterface; |
|
10
|
|
|
use UMA\Psr\Http\Message\Serializer\MessageSerializer; |
|
11
|
|
|
|
|
12
|
|
|
class Verifier |
|
13
|
|
|
{ |
|
14
|
|
|
/** |
|
15
|
|
|
* @var HashCalculator |
|
16
|
|
|
*/ |
|
17
|
|
|
private $calculator; |
|
18
|
|
|
|
|
19
|
|
|
/** |
|
20
|
|
|
* @var MonitorInterface |
|
21
|
|
|
*/ |
|
22
|
|
|
private $monitor; |
|
23
|
|
|
|
|
24
|
|
|
/** |
|
25
|
|
|
* @var HeaderValidator |
|
26
|
|
|
*/ |
|
27
|
|
|
private $validator; |
|
28
|
|
|
|
|
29
|
98 |
|
public function __construct(MonitorInterface $monitor = null) |
|
30
|
|
|
{ |
|
31
|
98 |
|
$this->calculator = new HashCalculator(); |
|
32
|
98 |
|
$this->monitor = null === $monitor ? |
|
33
|
98 |
|
new BlindMonitor() : $monitor; |
|
34
|
98 |
|
$this->validator = (new HeaderValidator()) |
|
35
|
98 |
|
->addRule(Specification::AUTH_HEADER, Specification::AUTH_REGEXP) |
|
36
|
98 |
|
->addRule(Specification::NONCE_HEADER, Specification::NONCE_REGEXP) |
|
37
|
98 |
|
->addRule(Specification::SIGN_HEADER, Specification::SIGN_REGEXP); |
|
38
|
98 |
|
} |
|
39
|
|
|
|
|
40
|
|
|
/** |
|
41
|
|
|
* @param MessageInterface $message |
|
42
|
|
|
* @param string $secret |
|
43
|
|
|
* |
|
44
|
|
|
* @return bool Signature verification outcome. |
|
45
|
|
|
* |
|
46
|
|
|
* @throws \InvalidArgumentException When $message is an implementation of |
|
47
|
|
|
* MessageInterface that cannot be |
|
48
|
|
|
* serialized and thus neither verified. |
|
49
|
|
|
*/ |
|
50
|
98 |
|
public function verify(MessageInterface $message, $secret) |
|
51
|
|
|
{ |
|
52
|
98 |
|
if (false === $matches = $this->validator->conforms($message)) { |
|
53
|
91 |
|
return false; |
|
54
|
|
|
} |
|
55
|
|
|
|
|
56
|
77 |
|
$clientSideSignature = $matches[Specification::AUTH_HEADER][1]; |
|
57
|
|
|
|
|
58
|
77 |
|
$serverSideSignature = $this->calculator |
|
59
|
77 |
|
->hmac(MessageSerializer::serialize($this->withoutUnsignedHeaders($message)), $secret); |
|
60
|
|
|
|
|
61
|
77 |
|
return hash_equals($serverSideSignature, $clientSideSignature) && !$this->monitor->seen($message); |
|
62
|
|
|
} |
|
63
|
|
|
|
|
64
|
|
|
/** |
|
65
|
|
|
* @param MessageInterface $message |
|
66
|
|
|
* |
|
67
|
|
|
* @return MessageInterface |
|
68
|
|
|
*/ |
|
69
|
77 |
|
private function withoutUnsignedHeaders(MessageInterface $message) |
|
70
|
|
|
{ |
|
71
|
77 |
|
$signedHeaders = array_filter(explode(',', $message->getHeaderLine(Specification::SIGN_HEADER))); |
|
72
|
|
|
|
|
73
|
77 |
|
foreach (array_keys($message->getHeaders()) as $headerName) { |
|
74
|
77 |
|
if (!in_array(mb_strtolower($headerName), $signedHeaders)) { |
|
75
|
77 |
|
$message = $message->withoutHeader($headerName); |
|
76
|
77 |
|
} |
|
77
|
77 |
|
} |
|
78
|
|
|
|
|
79
|
77 |
|
return $message; |
|
80
|
|
|
} |
|
81
|
|
|
} |
|
82
|
|
|
|
1ma /
Psr7Hmac
