|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace Doctrine\ODM\MongoDB\Id; |
|
6
|
|
|
|
|
7
|
|
|
use Doctrine\ODM\MongoDB\DocumentManager; |
|
8
|
|
|
use Exception; |
|
9
|
|
|
use function chr; |
|
10
|
|
|
use function hexdec; |
|
11
|
|
|
use function mt_rand; |
|
12
|
|
|
use function php_uname; |
|
13
|
|
|
use function preg_match; |
|
14
|
|
|
use function sha1; |
|
15
|
|
|
use function sprintf; |
|
16
|
|
|
use function str_replace; |
|
17
|
|
|
use function strlen; |
|
18
|
|
|
use function substr; |
|
19
|
|
|
|
|
20
|
|
|
/** |
|
21
|
|
|
* Generates UUIDs. |
|
22
|
|
|
*/ |
|
23
|
|
|
final class UuidGenerator extends AbstractIdGenerator |
|
24
|
|
|
{ |
|
25
|
|
|
/** |
|
26
|
|
|
* A unique environment value to salt each UUID with. |
|
27
|
|
|
* |
|
28
|
|
|
* @var string |
|
29
|
|
|
*/ |
|
30
|
|
|
protected $salt = null; |
|
31
|
|
|
|
|
32
|
|
|
/** |
|
33
|
|
|
* Used to set the salt that will be applied to each id |
|
34
|
|
|
*/ |
|
35
|
1 |
|
public function setSalt(string $salt) : void |
|
36
|
|
|
{ |
|
37
|
1 |
|
$this->salt = $salt; |
|
38
|
1 |
|
} |
|
39
|
|
|
|
|
40
|
|
|
/** |
|
41
|
|
|
* Returns the current salt value |
|
42
|
|
|
* |
|
43
|
|
|
* @return string $salt The current salt |
|
44
|
|
|
*/ |
|
45
|
1 |
|
public function getSalt() : string |
|
46
|
|
|
{ |
|
47
|
1 |
|
return $this->salt; |
|
48
|
|
|
} |
|
49
|
|
|
|
|
50
|
|
|
/** |
|
51
|
|
|
* Checks that a given string is a valid uuid. |
|
52
|
|
|
*/ |
|
53
|
|
|
public function isValid(string $uuid) : bool |
|
54
|
|
|
{ |
|
55
|
|
|
return preg_match('/^\{?[0-9a-f]{8}\-?[0-9a-f]{4}\-?[0-9a-f]{4}\-?[0-9a-f]{4}\-?[0-9a-f]{12}\}?$/i', $uuid) |
|
56
|
|
|
=== 1; |
|
57
|
|
|
} |
|
58
|
|
|
|
|
59
|
|
|
/** |
|
60
|
|
|
* Generates a new UUID |
|
61
|
|
|
* |
|
62
|
|
|
* @param DocumentManager $dm Not used. |
|
63
|
|
|
* @param object $document Not used. |
|
64
|
|
|
* |
|
65
|
|
|
* @return string UUID |
|
66
|
|
|
* |
|
67
|
|
|
* @throws Exception |
|
68
|
|
|
*/ |
|
69
|
|
|
public function generate(DocumentManager $dm, object $document) |
|
70
|
|
|
{ |
|
71
|
|
|
$uuid = $this->generateV4(); |
|
72
|
|
|
|
|
73
|
|
|
return $this->generateV5($uuid, $this->salt ?: php_uname('n')); |
|
74
|
|
|
} |
|
75
|
|
|
|
|
76
|
|
|
/** |
|
77
|
|
|
* Generates a v4 UUID |
|
78
|
|
|
*/ |
|
79
|
|
|
public function generateV4() : string |
|
80
|
|
|
{ |
|
81
|
|
|
return sprintf( |
|
82
|
|
|
'%04x%04x%04x%04x%04x%04x%04x%04x', |
|
83
|
|
|
// 32 bits for "time_low" |
|
84
|
|
|
mt_rand(0, 0xffff), |
|
85
|
|
|
mt_rand(0, 0xffff), |
|
86
|
|
|
// 16 bits for "time_mid" |
|
87
|
|
|
mt_rand(0, 0xffff), |
|
88
|
|
|
// 16 bits for "time_hi_and_version", |
|
89
|
|
|
// four most significant bits holds version number 4 |
|
90
|
|
|
mt_rand(0, 0x0fff) | 0x4000, |
|
91
|
|
|
// 16 bits, 8 bits for "clk_seq_hi_res", |
|
92
|
|
|
// 8 bits for "clk_seq_low", |
|
93
|
|
|
// two most significant bits holds zero and one for variant DCE1.1 |
|
94
|
|
|
mt_rand(0, 0x3fff) | 0x8000, |
|
95
|
|
|
// 48 bits for "node" |
|
96
|
|
|
mt_rand(0, 0xffff), |
|
97
|
|
|
mt_rand(0, 0xffff), |
|
98
|
|
|
mt_rand(0, 0xffff) |
|
99
|
|
|
); |
|
100
|
|
|
} |
|
101
|
|
|
|
|
102
|
|
|
/** |
|
103
|
|
|
* Generates a v5 UUID |
|
104
|
|
|
* |
|
105
|
|
|
* @throws Exception When the provided namespace is invalid. |
|
106
|
|
|
*/ |
|
107
|
|
|
public function generateV5(string $namespace, string $salt) : string |
|
108
|
|
|
{ |
|
109
|
|
|
if (! $this->isValid($namespace)) { |
|
110
|
|
|
throw new Exception('Provided $namespace is invalid: ' . $namespace); |
|
111
|
|
|
} |
|
112
|
|
|
|
|
113
|
|
|
// Get hexadecimal components of namespace |
|
114
|
|
|
$nhex = str_replace(['-', '{', '}'], '', $namespace); |
|
115
|
|
|
|
|
116
|
|
|
// Binary Value |
|
117
|
|
|
$nstr = ''; |
|
118
|
|
|
|
|
119
|
|
|
// Convert Namespace UUID to bits |
|
120
|
|
|
for ($i = 0; $i < strlen($nhex); $i += 2) { |
|
121
|
|
|
$nstr .= chr((int) hexdec($nhex[$i] . $nhex[$i + 1])); |
|
122
|
|
|
} |
|
123
|
|
|
|
|
124
|
|
|
// Calculate hash value |
|
125
|
|
|
$hash = sha1($nstr . $salt); |
|
126
|
|
|
|
|
127
|
|
|
return sprintf( |
|
128
|
|
|
'%08s%04s%04x%04x%12s', |
|
129
|
|
|
// 32 bits for "time_low" |
|
130
|
|
|
substr($hash, 0, 8), |
|
131
|
|
|
// 16 bits for "time_mid" |
|
132
|
|
|
substr($hash, 8, 4), |
|
133
|
|
|
// 16 bits for "time_hi_and_version", |
|
134
|
|
|
// four most significant bits holds version number 3 |
|
135
|
|
|
(hexdec(substr($hash, 12, 4)) & 0x0fff) | 0x3000, |
|
136
|
|
|
// 16 bits, 8 bits for "clk_seq_hi_res", |
|
137
|
|
|
// 8 bits for "clk_seq_low", |
|
138
|
|
|
// two most significant bits holds zero and one for variant DCE1.1 |
|
139
|
|
|
(hexdec(substr($hash, 16, 4)) & 0x3fff) | 0x8000, |
|
140
|
|
|
// 48 bits for "node" |
|
141
|
|
|
substr($hash, 20, 12) |
|
142
|
|
|
); |
|
143
|
|
|
} |
|
144
|
|
|
} |
|
145
|
|
|
|
doctrine /
mongodb-odm
