|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
/* |
|
6
|
|
|
* This file is part of Badcow DNS Library. |
|
7
|
|
|
* |
|
8
|
|
|
* (c) Samuel Williams <[email protected]> |
|
9
|
|
|
* |
|
10
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
11
|
|
|
* file that was distributed with this source code. |
|
12
|
|
|
*/ |
|
13
|
|
|
|
|
14
|
|
|
namespace Badcow\DNS\Rdata; |
|
15
|
|
|
|
|
16
|
|
|
use Badcow\DNS\Validator; |
|
17
|
|
|
|
|
18
|
|
|
/** |
|
19
|
|
|
* @see https://tools.ietf.org/html/rfc1035#section-3.4.1 |
|
20
|
|
|
*/ |
|
21
|
|
|
class A implements RdataInterface |
|
22
|
|
|
{ |
|
23
|
|
|
use RdataTrait; |
|
24
|
|
|
|
|
25
|
|
|
const TYPE = 'A'; |
|
26
|
|
|
const TYPE_CODE = 1; |
|
27
|
|
|
|
|
28
|
|
|
/** |
|
29
|
|
|
* @var string |
|
30
|
|
|
*/ |
|
31
|
|
|
protected $address; |
|
32
|
|
|
|
|
33
|
|
|
/** |
|
34
|
|
|
* @param string $address |
|
35
|
|
|
*/ |
|
36
|
37 |
|
public function setAddress(string $address): void |
|
37
|
|
|
{ |
|
38
|
37 |
|
if (!Validator::ipv4($address)) { |
|
39
|
|
|
throw new \InvalidArgumentException(sprintf('The address "%s" is not a valid IPv4 address.', $address)); |
|
40
|
|
|
} |
|
41
|
|
|
|
|
42
|
37 |
|
$this->address = $address; |
|
43
|
37 |
|
} |
|
44
|
|
|
|
|
45
|
|
|
/** |
|
46
|
|
|
* @return string |
|
47
|
|
|
*/ |
|
48
|
14 |
|
public function getAddress(): ?string |
|
49
|
|
|
{ |
|
50
|
14 |
|
return $this->address; |
|
51
|
|
|
} |
|
52
|
|
|
|
|
53
|
|
|
/** |
|
54
|
|
|
* {@inheritdoc} |
|
55
|
|
|
*/ |
|
56
|
7 |
|
public function toText(): string |
|
57
|
|
|
{ |
|
58
|
7 |
|
return $this->address ?? ''; |
|
59
|
|
|
} |
|
60
|
|
|
|
|
61
|
|
|
/** |
|
62
|
|
|
* {@inheritdoc} |
|
63
|
|
|
* |
|
64
|
|
|
* @throws \InvalidArgumentException |
|
65
|
|
|
*/ |
|
66
|
5 |
|
public function toWire(): string |
|
67
|
|
|
{ |
|
68
|
5 |
|
if (false === $encoded = inet_pton($this->address)) { |
|
69
|
|
|
throw new \InvalidArgumentException(sprintf('The IP address "%s" cannot be encoded. Check that it is a valid IP address.', $this->address)); |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
5 |
|
return $encoded; |
|
73
|
|
|
} |
|
74
|
|
|
|
|
75
|
|
|
/** |
|
76
|
|
|
* {@inheritdoc} |
|
77
|
|
|
*/ |
|
78
|
10 |
|
public static function fromText(string $text): RdataInterface |
|
79
|
|
|
{ |
|
80
|
10 |
|
$a = new static(); |
|
81
|
10 |
|
$a->setAddress($text); |
|
82
|
|
|
|
|
83
|
10 |
|
return $a; |
|
84
|
|
|
} |
|
85
|
|
|
|
|
86
|
|
|
/** |
|
87
|
|
|
* {@inheritdoc} |
|
88
|
|
|
* |
|
89
|
|
|
* @throws DecodeException |
|
90
|
|
|
*/ |
|
91
|
12 |
|
public static function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): RdataInterface |
|
92
|
|
|
{ |
|
93
|
12 |
|
if (false === $address = @inet_ntop(substr($rdata, $offset, 4))) { |
|
94
|
|
|
throw new DecodeException(static::TYPE, $rdata); |
|
95
|
|
|
} |
|
96
|
12 |
|
$offset += 4; |
|
97
|
|
|
|
|
98
|
12 |
|
$a = new static(); |
|
99
|
12 |
|
$a->setAddress($address); |
|
100
|
|
|
|
|
101
|
12 |
|
return $a; |
|
102
|
|
|
} |
|
103
|
|
|
} |
|
104
|
|
|
|
Badcow /
DNS
