|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace PhpIso; |
|
6
|
|
|
|
|
7
|
|
|
use PhpIso\Util\Buffer; |
|
8
|
|
|
|
|
9
|
|
|
class PathTableRecord |
|
10
|
|
|
{ |
|
11
|
|
|
/** |
|
12
|
|
|
* The directory number |
|
13
|
|
|
*/ |
|
14
|
|
|
public int $dirNum; |
|
15
|
|
|
|
|
16
|
|
|
/** |
|
17
|
|
|
* The length of the Dir Identifier |
|
18
|
|
|
*/ |
|
19
|
|
|
public int $dirIdLen; |
|
20
|
|
|
|
|
21
|
|
|
/** |
|
22
|
|
|
* The length of the extended attributes |
|
23
|
|
|
*/ |
|
24
|
|
|
public int $extendedAttrLength; |
|
25
|
|
|
|
|
26
|
|
|
/** |
|
27
|
|
|
* The location of this "Path Table Record" |
|
28
|
|
|
*/ |
|
29
|
|
|
public int $location; |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* The parent's directory number |
|
33
|
|
|
*/ |
|
34
|
|
|
public int $parentDirNum; |
|
35
|
|
|
|
|
36
|
|
|
/** |
|
37
|
|
|
* The directory identifier. |
|
38
|
|
|
*/ |
|
39
|
|
|
public string $dirIdentifier; |
|
40
|
|
|
|
|
41
|
|
|
/** |
|
42
|
|
|
* Set the directory number |
|
43
|
|
|
*/ |
|
44
|
4 |
|
public function setDirectoryNumber(int $dirNum): void |
|
45
|
|
|
{ |
|
46
|
4 |
|
$this->dirNum = $dirNum; |
|
47
|
|
|
} |
|
48
|
|
|
|
|
49
|
|
|
/** |
|
50
|
|
|
* Load the "Path Table Record" from buffer |
|
51
|
|
|
* |
|
52
|
|
|
* @param array<int, int> $bytes |
|
53
|
|
|
*/ |
|
54
|
4 |
|
public function init(array &$bytes, int &$offset, bool $supplementary = false): bool |
|
55
|
|
|
{ |
|
56
|
4 |
|
$offsetTmp = $offset; |
|
57
|
|
|
|
|
58
|
4 |
|
$this->dirIdLen = $bytes[$offsetTmp]; |
|
59
|
4 |
|
$offsetTmp++; |
|
60
|
|
|
|
|
61
|
4 |
|
if ($this->dirIdLen === 0) { |
|
62
|
4 |
|
return false; |
|
63
|
|
|
} |
|
64
|
|
|
|
|
65
|
3 |
|
$this->extendedAttrLength = $bytes[$offsetTmp]; |
|
66
|
3 |
|
$offsetTmp++; |
|
67
|
3 |
|
$this->location = Buffer::readInt32($bytes, $offsetTmp); |
|
68
|
3 |
|
$this->parentDirNum = Buffer::readInt16($bytes, $offsetTmp); |
|
69
|
3 |
|
$this->dirIdentifier = Buffer::readAString($bytes, $this->dirIdLen, $offsetTmp); |
|
70
|
|
|
|
|
71
|
3 |
|
if ($this->dirIdLen % 2 !== 0) { |
|
72
|
3 |
|
$offsetTmp++; |
|
73
|
|
|
} |
|
74
|
|
|
|
|
75
|
3 |
|
$offset = $offsetTmp; |
|
76
|
3 |
|
return true; |
|
77
|
|
|
} |
|
78
|
|
|
|
|
79
|
|
|
/** |
|
80
|
|
|
* Load the "File Directory Descriptors"(extents) from ISO file |
|
81
|
|
|
* |
|
82
|
|
|
* @return array<int, FileDirectory>|false |
|
83
|
|
|
*/ |
|
84
|
3 |
|
public function loadExtents(IsoFile &$isoFile, int $blockSize, bool $supplementary = false, int $jolietLevel = 0): array|false |
|
85
|
|
|
{ |
|
86
|
3 |
|
return FileDirectory::loadExtentsSt($isoFile, $blockSize, $this->location, $supplementary, $jolietLevel); |
|
87
|
|
|
} |
|
88
|
|
|
|
|
89
|
|
|
public function extractFile(IsoFile &$isoFile, int $blockSize, int $location, int $dataLength, string $destinationFile): void |
|
90
|
|
|
{ |
|
91
|
|
|
$seekLocation = $location * $blockSize; |
|
92
|
|
|
|
|
93
|
|
|
if ($isoFile->seek($seekLocation, SEEK_SET) === -1) { |
|
94
|
|
|
throw new Exception('Failed to seek to location'); |
|
95
|
|
|
} |
|
96
|
|
|
|
|
97
|
|
|
$writeHandle = fopen($destinationFile, 'wb'); |
|
98
|
|
|
|
|
99
|
|
|
if ($writeHandle === false) { |
|
100
|
|
|
throw new Exception('Failed to open file for writing: ' . $destinationFile); |
|
101
|
|
|
} |
|
102
|
|
|
|
|
103
|
|
|
do { |
|
104
|
|
|
$readLength = 1024; |
|
105
|
|
|
|
|
106
|
|
|
if ($dataLength < $readLength) { |
|
107
|
|
|
$readLength = $dataLength; |
|
108
|
|
|
} |
|
109
|
|
|
|
|
110
|
|
|
$readResult = $isoFile->read($readLength); |
|
111
|
|
|
|
|
112
|
|
|
if ($readResult === false) { |
|
113
|
|
|
break; |
|
114
|
|
|
} |
|
115
|
|
|
|
|
116
|
|
|
$writeResult = fwrite($writeHandle, $readResult); |
|
117
|
|
|
|
|
118
|
|
|
if ($writeResult === false) { |
|
119
|
|
|
throw new Exception('Failed to write to file: ' . $destinationFile); |
|
120
|
|
|
} |
|
121
|
|
|
|
|
122
|
|
|
$dataLength -= $readLength; |
|
123
|
|
|
} while ($dataLength > 0); |
|
124
|
|
|
|
|
125
|
|
|
fclose($writeHandle); |
|
126
|
|
|
} |
|
127
|
|
|
|
|
128
|
|
|
/** |
|
129
|
|
|
* Build the full path of a PathTableRecord object based on it's parent(s) |
|
130
|
|
|
* |
|
131
|
|
|
* @param array<int, PathTableRecord> $pathTable |
|
132
|
|
|
* |
|
133
|
|
|
* @throws Exception |
|
134
|
|
|
*/ |
|
135
|
5 |
|
public function getFullPath(array $pathTable): string |
|
136
|
|
|
{ |
|
137
|
5 |
|
if ($this->parentDirNum === 1) { |
|
138
|
4 |
|
if ($this->dirIdentifier === '') { |
|
139
|
3 |
|
return DIRECTORY_SEPARATOR; |
|
140
|
|
|
} |
|
141
|
|
|
|
|
142
|
4 |
|
return DIRECTORY_SEPARATOR . $this->dirIdentifier . DIRECTORY_SEPARATOR; |
|
143
|
|
|
} |
|
144
|
|
|
|
|
145
|
3 |
|
$path = $this->dirIdentifier; |
|
146
|
3 |
|
$used = $pathTable[$this->parentDirNum]; |
|
147
|
|
|
|
|
148
|
3 |
|
$depth = 0; |
|
149
|
3 |
|
while (true) { |
|
150
|
3 |
|
$depth++; |
|
151
|
|
|
|
|
152
|
|
|
// max depth check |
|
153
|
3 |
|
if ($depth > 1000) { |
|
154
|
1 |
|
throw new Exception('Maximum depth of 1000 reached'); |
|
155
|
|
|
} |
|
156
|
|
|
|
|
157
|
3 |
|
$path = $used->dirIdentifier . DIRECTORY_SEPARATOR . $path; |
|
158
|
|
|
|
|
159
|
3 |
|
if ($used->parentDirNum === 1) { |
|
160
|
2 |
|
break; |
|
161
|
|
|
} |
|
162
|
|
|
|
|
163
|
2 |
|
$used = $pathTable[$used->parentDirNum]; |
|
164
|
|
|
} |
|
165
|
|
|
|
|
166
|
2 |
|
return DIRECTORY_SEPARATOR . $path . DIRECTORY_SEPARATOR; |
|
167
|
|
|
} |
|
168
|
|
|
} |
|
169
|
|
|
|
indy2kro /
php-iso
