|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace Lit\Middleware\IpAddress; |
|
6
|
|
|
|
|
7
|
|
|
use Lit\Nimo\AbstractMiddleware; |
|
8
|
|
|
use Lit\Nimo\Traits\MiddlewareTrait; |
|
9
|
|
|
use Psr\Http\Message\ResponseInterface; |
|
10
|
|
|
use Psr\Http\Message\ServerRequestInterface; |
|
11
|
|
|
|
|
12
|
|
|
class IpAddress extends AbstractMiddleware |
|
13
|
|
|
{ |
|
14
|
|
|
use MiddlewareTrait; |
|
15
|
|
|
|
|
16
|
|
|
/** |
|
17
|
|
|
* @var array |
|
18
|
|
|
*/ |
|
19
|
|
|
protected $trustedProxies; |
|
20
|
|
|
/** |
|
21
|
|
|
* @var array |
|
22
|
|
|
*/ |
|
23
|
|
|
protected $headers; |
|
24
|
|
|
/** |
|
25
|
|
|
* @var string |
|
26
|
|
|
*/ |
|
27
|
|
|
protected $ipAddress; |
|
28
|
|
|
|
|
29
|
13 |
|
public function __construct( |
|
30
|
|
|
array $trustedProxies = [], |
|
31
|
|
|
array $headers = [] |
|
32
|
|
|
) { |
|
33
|
13 |
|
$this->trustedProxies = $trustedProxies; |
|
34
|
13 |
|
$this->headers = $headers; |
|
35
|
13 |
|
} |
|
36
|
|
|
|
|
37
|
|
|
/** |
|
38
|
|
|
* @return string |
|
39
|
|
|
*/ |
|
40
|
13 |
|
public function getIpAddress(): ?string |
|
41
|
|
|
{ |
|
42
|
13 |
|
return $this->ipAddress; |
|
43
|
|
|
} |
|
44
|
|
|
|
|
45
|
13 |
|
public static function getIpAddressFromRequest( |
|
46
|
|
|
ServerRequestInterface $request, |
|
47
|
|
|
array $trustedProxies = [], |
|
48
|
|
|
array $headers = [] |
|
49
|
|
|
): ?string { |
|
50
|
13 |
|
$headers = $headers ?: [ |
|
51
|
13 |
|
'Forwarded', |
|
52
|
|
|
'X-Forwarded-For', |
|
53
|
|
|
'X-Forwarded', |
|
54
|
|
|
'X-Cluster-Client-Ip', |
|
55
|
|
|
'Client-Ip', |
|
56
|
|
|
]; |
|
57
|
|
|
|
|
58
|
13 |
|
$params = $request->getServerParams(); |
|
59
|
|
|
|
|
60
|
13 |
|
$remoteAddr = $params['REMOTE_ADDR'] ?? ''; |
|
61
|
13 |
|
if (!self::isValidIpAddress($remoteAddr)) { |
|
62
|
1 |
|
return null; |
|
63
|
|
|
} |
|
64
|
|
|
|
|
65
|
12 |
|
if (empty($trustedProxies) || !in_array($remoteAddr, $trustedProxies)) { |
|
66
|
3 |
|
return $remoteAddr; |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
9 |
|
$ip = self::getIpAddressFromHeaders($request, $headers); |
|
70
|
9 |
|
if (!empty($ip)) { |
|
71
|
8 |
|
return $ip; |
|
72
|
|
|
} |
|
73
|
|
|
|
|
74
|
1 |
|
return $remoteAddr; |
|
75
|
|
|
} |
|
76
|
|
|
|
|
77
|
13 |
|
protected function main(): ResponseInterface |
|
78
|
|
|
{ |
|
79
|
13 |
|
$this->attachToRequest(); |
|
80
|
13 |
|
$this->ipAddress = static::getIpAddressFromRequest($this->request, $this->trustedProxies, $this->headers); |
|
81
|
|
|
|
|
82
|
13 |
|
return $this->delegate(); |
|
83
|
|
|
} |
|
84
|
|
|
|
|
85
|
13 |
|
protected static function isValidIpAddress(string $ip): bool |
|
86
|
|
|
{ |
|
87
|
13 |
|
return false !== filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_IPV6); |
|
88
|
|
|
} |
|
89
|
|
|
|
|
90
|
|
|
/** |
|
91
|
|
|
* @param ServerRequestInterface $request |
|
92
|
|
|
* @param string[] $headers |
|
93
|
|
|
* @return null|string |
|
94
|
|
|
*/ |
|
95
|
9 |
|
protected static function getIpAddressFromHeaders(ServerRequestInterface $request, array $headers): ?string |
|
96
|
|
|
{ |
|
97
|
9 |
|
foreach ($headers as $headerName) { |
|
98
|
9 |
|
$headerValue = trim(explode(',', $request->getHeaderLine($headerName))[0]); |
|
99
|
9 |
|
if (empty($headerValue)) { |
|
100
|
5 |
|
continue; |
|
101
|
|
|
} |
|
102
|
|
|
|
|
103
|
9 |
|
if (strtolower($headerName) == 'forwarded') { |
|
104
|
3 |
|
$headerValue = static::parseForwarded($headerValue); |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
9 |
|
if (static::isValidIpAddress($headerValue)) { |
|
108
|
9 |
|
return $headerValue; |
|
109
|
|
|
} |
|
110
|
|
|
} |
|
111
|
|
|
|
|
112
|
1 |
|
return null; |
|
113
|
|
|
} |
|
114
|
|
|
|
|
115
|
3 |
|
protected static function parseForwarded($headerValue): ?string |
|
116
|
|
|
{ |
|
117
|
3 |
|
foreach (explode(';', $headerValue) as $headerPart) { |
|
118
|
3 |
|
if (strtolower(substr($headerPart, 0, 4)) == 'for=') { |
|
119
|
3 |
|
$for = explode(']', $headerPart); |
|
120
|
3 |
|
return trim(substr($for[0], 4), " \t\n\r\0\x0B\"[]"); |
|
121
|
|
|
} |
|
122
|
|
|
} |
|
123
|
|
|
|
|
124
|
|
|
return null; |
|
125
|
|
|
} |
|
126
|
|
|
} |
|
127
|
|
|
|
litphp /
middleware-ip-address
