|
1
|
|
|
<?php declare(strict_types=1); |
|
2
|
|
|
|
|
3
|
|
|
namespace ncryptf\middleware; |
|
4
|
|
|
|
|
5
|
|
|
use DateTime; |
|
6
|
|
|
use Exception; |
|
7
|
|
|
|
|
8
|
|
|
use Psr\Http\Message\ResponseInterface; |
|
9
|
|
|
use Psr\Http\Message\ServerRequestInterface; |
|
10
|
|
|
use Psr\Http\Server\MiddlewareInterface; |
|
11
|
|
|
use Psr\Http\Server\RequestHandlerInterface; |
|
12
|
|
|
use ncryptf\Authorization; |
|
13
|
|
|
use ncryptf\Response; |
|
14
|
|
|
use ncryptf\Token; |
|
15
|
|
|
|
|
16
|
|
|
/** |
|
17
|
|
|
* PSR-15 Authentication middleware for handling ncryptf Authorization requests |
|
18
|
|
|
* Abstract class should be extended and implement `getTokenFromAccessToken` and `getRequestBody` |
|
19
|
|
|
*/ |
|
20
|
|
|
abstract class AbstractAuthentication implements MiddlewareInterface |
|
21
|
|
|
{ |
|
22
|
|
|
use \Middlewares\Utils\Traits\HasResponseFactory; |
|
23
|
|
|
|
|
24
|
|
|
// The date header |
|
25
|
|
|
const DATE_HEADER = 'X-DATE'; |
|
26
|
|
|
|
|
27
|
|
|
// The authorization header |
|
28
|
|
|
const AUTHORIZATION_HEADER = 'Authorization'; |
|
29
|
|
|
|
|
30
|
|
|
// The amount of the seconds the request is permitted to differ from the server time |
|
31
|
|
|
const DRIFT_TIME_ALLOWANCE = 90; |
|
32
|
|
|
|
|
33
|
|
|
/** |
|
34
|
|
|
* Process a request |
|
35
|
|
|
* @param ServerRequestInterface $request |
|
36
|
|
|
* @param RequestHandlerInterface $handler |
|
37
|
|
|
* @return ResponseInterface |
|
38
|
|
|
*/ |
|
39
|
|
|
public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
|
40
|
|
|
{ |
|
41
|
|
|
$params = Authorization::extractParamsFromHeaderString( |
|
42
|
|
|
$request->getHeaderLine(self::AUTHORIZATION_HEADER) |
|
43
|
|
|
); |
|
44
|
|
|
|
|
45
|
|
|
if ($params) { |
|
46
|
|
|
if ($token = $this->getTokenFromAccessToken($params['access_token'])) { |
|
47
|
|
|
try { |
|
48
|
|
|
$date = new DateTime($params['date'] ?? $request->getHeaderLine(self::DATE_HEADER)); |
|
49
|
|
|
|
|
50
|
|
|
$auth = new Authorization( |
|
51
|
|
|
$request->getMethod(), |
|
52
|
|
|
$this->getRequestUri($request), |
|
53
|
|
|
$token, |
|
54
|
|
|
$date, |
|
55
|
|
|
$this->getRequestBody(clone $request), |
|
56
|
|
|
$params['v'], |
|
57
|
|
|
\base64_decode($params['salt']) |
|
58
|
|
|
); |
|
59
|
|
|
|
|
60
|
|
|
if ($auth->verify(\base64_decode($params['hmac']), $auth, static::DRIFT_TIME_ALLOWANCE)) { |
|
61
|
|
|
return $handler->handle( |
|
62
|
|
|
$request->withAttribute('ncryptf-token', $token) |
|
63
|
|
|
->withAttribute('ncryptf-user', $this->getUserFromToken($token)) |
|
64
|
|
|
); |
|
65
|
|
|
} |
|
66
|
|
|
} catch (Exception $e) { |
|
67
|
|
|
return $this->createResponse(401); |
|
68
|
|
|
} |
|
69
|
|
|
} |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
|
|
return $this->createResponse(401); |
|
73
|
|
|
} |
|
74
|
|
|
|
|
75
|
|
|
/** |
|
76
|
|
|
* Returns the full URI |
|
77
|
|
|
* @param ServerRequestInterface $request |
|
78
|
|
|
* @return string |
|
79
|
|
|
*/ |
|
80
|
|
|
private function getRequestUri(ServerRequestInterface $request) : string |
|
81
|
|
|
{ |
|
82
|
|
|
$uri = $request->getUri()->getPath(); |
|
83
|
|
|
$query = $request->getUri()->getQuery(); |
|
84
|
|
|
|
|
85
|
|
|
if (!empty($query)) { |
|
86
|
|
|
return $uri . '?' . \urldecode($query); |
|
87
|
|
|
} |
|
88
|
|
|
|
|
89
|
|
|
return $uri; |
|
90
|
|
|
} |
|
91
|
|
|
|
|
92
|
|
|
/** |
|
93
|
|
|
* Returns the plaintext request body. |
|
94
|
|
|
* |
|
95
|
|
|
* @param ServerRequestInterface $request |
|
96
|
|
|
* @return string |
|
97
|
|
|
*/ |
|
98
|
|
|
protected function getRequestBody(ServerRequestInterface $request) : string |
|
99
|
|
|
{ |
|
100
|
|
|
if ($decryptedBody = $request->getAttribute('ncryptf-decrypted-body', false)) { |
|
101
|
|
|
return $decryptedBody; |
|
102
|
|
|
} |
|
103
|
|
|
|
|
104
|
|
|
return $request->getBody()->getContents(); |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
|
|
/** |
|
108
|
|
|
* Returns the \ncryptf\Token associated to the given access token. |
|
109
|
|
|
* If the access token is not found, `NULL` should be returned |
|
110
|
|
|
* |
|
111
|
|
|
* @param string $accessToken |
|
112
|
|
|
* @return \ncryptf\Token |
|
113
|
|
|
*/ |
|
114
|
|
|
abstract protected function getTokenFromAccessToken(string $accessToken) :? Token; |
|
115
|
|
|
|
|
116
|
|
|
/** |
|
117
|
|
|
* Given a particular token, returns an object, array, or integer representing the user |
|
118
|
|
|
* |
|
119
|
|
|
* @param \ncryptf\Token $token |
|
120
|
|
|
* @return integer|array|object |
|
121
|
|
|
*/ |
|
122
|
|
|
abstract protected function getUserFromToken(Token $token); |
|
123
|
|
|
} |
|
124
|
|
|
|
ncryptf /
ncryptf-php
