1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
<?php
/*
* This file is part of the PHPASN1 library.
*
* Copyright © Friedrich Große <friedrich.grosse@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace FG\ASN1\Universal;
use FG\ASN1\AbstractTime;
use FG\ASN1\Parsable;
use FG\ASN1\Identifier;
use FG\ASN1\Exception\ParserException;
/**
* This ASN.1 universal type contains date and time information according to ISO 8601.
*
* The type consists of values representing:
* a) a calendar date, as defined in ISO 8601; and
* b) a time of day, to any of the precisions defined in ISO 8601, except for the hours value 24 which shall not be used; and
* c) the local time differential factor as defined in ISO 8601.
*
* Decoding of this type will accept the Basic Encoding Rules (BER)
* The encoding will comply with the Distinguished Encoding Rules (DER).
*/
class GeneralizedTime extends AbstractTime implements Parsable
{
private $microseconds;
public function __construct($dateTime = null, $dateTimeZone = 'UTC')
{
parent::__construct($dateTime, $dateTimeZone);
$this->microseconds = $this->value->format('u');
if ($this->containsFractionalSecondsElement()) {
// DER requires us to remove trailing zeros
$this->microseconds = preg_replace('/([1-9]+)0+$/', '$1', $this->microseconds);
}
}
public function getType()
{
return Identifier::GENERALIZED_TIME;
}
protected function calculateContentLength()
{
$contentSize = 15; // YYYYMMDDHHmmSSZ
if ($this->containsFractionalSecondsElement()) {
$contentSize += 1 + strlen($this->microseconds);
}
return $contentSize;
}
public function containsFractionalSecondsElement()
{
return intval($this->microseconds) > 0;
}
protected function getEncodedValue()
{
$encodedContent = $this->value->format('YmdHis');
if ($this->containsFractionalSecondsElement()) {
$encodedContent .= ".{$this->microseconds}";
}
return $encodedContent.'Z';
}
public function __toString()
{
if ($this->containsFractionalSecondsElement()) {
return $this->value->format("Y-m-d\tH:i:s.uP");
} else {
return $this->value->format("Y-m-d\tH:i:sP");
}
}
public static function fromBinary(&$binaryData, &$offsetIndex = 0)
{
self::parseIdentifier($binaryData[$offsetIndex], Identifier::GENERALIZED_TIME, $offsetIndex++);
$lengthOfMinimumTimeString = 14; // YYYYMMDDHHmmSS
$contentLength = self::parseContentLength($binaryData, $offsetIndex, $lengthOfMinimumTimeString);
$maximumBytesToRead = $contentLength;
$format = 'YmdGis';
$content = substr($binaryData, $offsetIndex, $contentLength);
$dateTimeString = substr($content, 0, $lengthOfMinimumTimeString);
$offsetIndex += $lengthOfMinimumTimeString;
$maximumBytesToRead -= $lengthOfMinimumTimeString;
if ($contentLength == $lengthOfMinimumTimeString) {
$localTimeZone = new \DateTimeZone(date_default_timezone_get());
$dateTime = \DateTime::createFromFormat($format, $dateTimeString, $localTimeZone);
} else {
if ($binaryData[$offsetIndex] == '.') {
$maximumBytesToRead--; // account for the '.'
$nrOfFractionalSecondElements = 1; // account for the '.'
while ($maximumBytesToRead > 0
&& $binaryData[$offsetIndex + $nrOfFractionalSecondElements] != '+'
&& $binaryData[$offsetIndex + $nrOfFractionalSecondElements] != '-'
&& $binaryData[$offsetIndex + $nrOfFractionalSecondElements] != 'Z') {
$nrOfFractionalSecondElements++;
$maximumBytesToRead--;
}
$dateTimeString .= substr($binaryData, $offsetIndex, $nrOfFractionalSecondElements);
$offsetIndex += $nrOfFractionalSecondElements;
$format .= '.u';
}
$dateTime = \DateTime::createFromFormat($format, $dateTimeString, new \DateTimeZone('UTC'));
if ($maximumBytesToRead > 0) {
if ($binaryData[$offsetIndex] == '+'
|| $binaryData[$offsetIndex] == '-') {
$dateTime = static::extractTimeZoneData($binaryData, $offsetIndex, $dateTime);
} elseif ($binaryData[$offsetIndex++] != 'Z') {
throw new ParserException('Invalid ISO 8601 Time String', $offsetIndex);
}
}
}
$parsedObject = new self($dateTime);
$parsedObject->setContentLength($contentLength);
return $parsedObject;
}
}
|
