|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace kalanis\RemoteRequest\Protocols\Fsp; |
|
4
|
|
|
|
|
5
|
|
|
|
|
6
|
|
|
use kalanis\RemoteRequest\Interfaces\IRRTranslations; |
|
7
|
|
|
use kalanis\RemoteRequest\Protocols; |
|
8
|
|
|
use kalanis\RemoteRequest\RequestException; |
|
9
|
|
|
use kalanis\RemoteRequest\Traits\TLang; |
|
10
|
|
|
|
|
11
|
|
|
|
|
12
|
|
|
/** |
|
13
|
|
|
* Class Answer |
|
14
|
|
|
* @package RemoteRequest\Protocols\Fsp |
|
15
|
|
|
* Process server's answer - FSP packet |
|
16
|
|
|
*/ |
|
17
|
|
|
class Answer extends Protocols\Dummy\Answer |
|
18
|
|
|
{ |
|
19
|
|
|
use TLang; |
|
20
|
|
|
use Traits\THeader; |
|
21
|
|
|
use Traits\TChecksum; |
|
22
|
|
|
|
|
23
|
|
|
protected int $headChecksum = 0; |
|
24
|
|
|
protected int $headCommand = 0; |
|
25
|
|
|
protected int $headServerKey = 0; |
|
26
|
|
|
protected int $headSequence = 0; |
|
27
|
|
|
protected int $headDataLength = 0; |
|
28
|
|
|
protected int $headFilePosition = 0; |
|
29
|
|
|
protected string $header = ''; |
|
30
|
|
|
protected string $content = ''; |
|
31
|
|
|
protected string $extra = ''; |
|
32
|
|
|
|
|
33
|
|
|
public bool $canDump = false; // for dump info about checksums |
|
34
|
|
|
|
|
35
|
20 |
|
public function __construct(?IRRTranslations $lang = null) |
|
36
|
|
|
{ |
|
37
|
20 |
|
$this->setRRLang($lang); |
|
38
|
|
|
} |
|
39
|
|
|
|
|
40
|
|
|
/** |
|
41
|
|
|
* @throws RequestException |
|
42
|
|
|
* @return Answer |
|
43
|
|
|
*/ |
|
44
|
18 |
|
public function process(): Answer |
|
45
|
|
|
{ |
|
46
|
18 |
|
$this->checkSize(); |
|
47
|
16 |
|
$this->getHeader(); |
|
48
|
16 |
|
$this->processHeader(); |
|
49
|
16 |
|
$this->processContent(); |
|
50
|
16 |
|
$this->checkResponse(); |
|
51
|
15 |
|
return $this; |
|
52
|
|
|
} |
|
53
|
|
|
|
|
54
|
|
|
/** |
|
55
|
|
|
* @throws RequestException |
|
56
|
|
|
*/ |
|
57
|
18 |
|
protected function checkSize(): void |
|
58
|
|
|
{ |
|
59
|
|
|
// @phpstan-ignore-next-line |
|
60
|
18 |
|
$loadSize = is_resource($this->body) ? fstat($this->body)['size'] : strlen(strval($this->body)); |
|
61
|
18 |
|
if (Protocols\Fsp::HEADER_SIZE > $loadSize) { |
|
62
|
1 |
|
throw new RequestException($this->getRRLang()->rrFspResponseShort($loadSize)); |
|
63
|
|
|
} |
|
64
|
17 |
|
if (Protocols\Fsp::MAX_PACKET_SIZE < $loadSize) { |
|
65
|
1 |
|
throw new RequestException($this->getRRLang()->rrFspResponseLarge($loadSize)); |
|
66
|
|
|
} |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
16 |
|
protected function getHeader(): void |
|
70
|
|
|
{ |
|
71
|
16 |
|
$this->header = is_resource($this->body) |
|
72
|
15 |
|
? strval(stream_get_contents($this->body, Protocols\Fsp::HEADER_SIZE, 0)) |
|
73
|
1 |
|
: strval(substr(strval($this->body), 0, Protocols\Fsp::HEADER_SIZE)) |
|
74
|
16 |
|
; |
|
75
|
|
|
} |
|
76
|
|
|
|
|
77
|
16 |
|
protected function processHeader(): void |
|
78
|
|
|
{ |
|
79
|
16 |
|
$this->headCommand = Strings::cutter($this->header, 0, 1); |
|
80
|
16 |
|
$this->headChecksum = Strings::cutter($this->header, 1, 1); |
|
81
|
16 |
|
$this->headServerKey = Strings::cutter($this->header, 2, 2); |
|
82
|
16 |
|
$this->headSequence = Strings::cutter($this->header, 4, 2); |
|
83
|
16 |
|
$this->headDataLength = Strings::cutter($this->header, 6, 2); |
|
84
|
16 |
|
$this->headFilePosition = Strings::cutter($this->header, 8, 4); |
|
85
|
|
|
} |
|
86
|
|
|
|
|
87
|
16 |
|
protected function processContent(): void |
|
88
|
|
|
{ |
|
89
|
16 |
|
$content = is_resource($this->body) |
|
90
|
15 |
|
? strval(stream_get_contents($this->body, -1, Protocols\Fsp::HEADER_SIZE)) |
|
91
|
16 |
|
: strval(substr(strval($this->body), Protocols\Fsp::HEADER_SIZE)) |
|
92
|
16 |
|
; |
|
93
|
16 |
|
$this->content = strval(substr($content, 0, $this->getDataLength())); |
|
94
|
16 |
|
$this->extra = strval(substr($content, $this->getDataLength())); |
|
95
|
|
|
} |
|
96
|
|
|
|
|
97
|
|
|
/** |
|
98
|
|
|
* Generate server checksum from data and compare them |
|
99
|
|
|
* @throws RequestException |
|
100
|
|
|
*/ |
|
101
|
16 |
|
protected function checkResponse(): void |
|
102
|
|
|
{ |
|
103
|
16 |
|
$checksum = $this->computeCheckSum(); |
|
104
|
|
|
// @codeCoverageIgnoreStart |
|
105
|
|
|
// necessary dumper - who can calculate checksums from their head? |
|
106
|
|
|
if ($this->canDump) { |
|
107
|
|
|
var_dump(['chksums', |
|
|
|
|
|
|
108
|
|
|
'calc_raw' => $checksum, 'calc_hex' => dechex($checksum), 'calc_bin' => decbin($checksum), |
|
109
|
|
|
'got_raw' => $this->headChecksum, 'got_hex' => dechex($this->headChecksum), 'got_bin' => decbin($this->headChecksum) |
|
110
|
|
|
]); |
|
111
|
|
|
} |
|
112
|
|
|
// @codeCoverageIgnoreEnd |
|
113
|
16 |
|
if ($checksum != $this->headChecksum ) { |
|
114
|
1 |
|
throw new RequestException($this->getRRLang()->rrFspInvalidChecksum($checksum, $this->headChecksum)); |
|
115
|
|
|
} |
|
116
|
|
|
} |
|
117
|
|
|
|
|
118
|
16 |
|
public function getInitialSumChunk(): int |
|
119
|
|
|
{ |
|
120
|
16 |
|
return 0; |
|
121
|
|
|
} |
|
122
|
|
|
|
|
123
|
16 |
|
public function getChecksumPacket(): string |
|
124
|
|
|
{ |
|
125
|
16 |
|
$content = $this->header . $this->content . $this->extra ; |
|
126
|
16 |
|
$content[1] = chr(0); // null checksum |
|
127
|
16 |
|
return $content; |
|
128
|
|
|
} |
|
129
|
|
|
|
|
130
|
15 |
|
public function getCommand(): int |
|
131
|
|
|
{ |
|
132
|
15 |
|
return intval($this->headCommand); |
|
133
|
|
|
} |
|
134
|
|
|
|
|
135
|
3 |
|
public function getKey(): int |
|
136
|
|
|
{ |
|
137
|
3 |
|
return intval($this->headServerKey); |
|
138
|
|
|
} |
|
139
|
|
|
|
|
140
|
3 |
|
public function getSequence(): int |
|
141
|
|
|
{ |
|
142
|
3 |
|
return intval($this->headSequence); |
|
143
|
|
|
} |
|
144
|
|
|
|
|
145
|
16 |
|
public function getDataLength(): int |
|
146
|
|
|
{ |
|
147
|
16 |
|
return intval($this->headDataLength); |
|
148
|
|
|
} |
|
149
|
|
|
|
|
150
|
8 |
|
public function getFilePosition(): int |
|
151
|
|
|
{ |
|
152
|
8 |
|
return intval($this->headFilePosition); |
|
153
|
|
|
} |
|
154
|
|
|
|
|
155
|
12 |
|
public function getContent(): string |
|
156
|
|
|
{ |
|
157
|
12 |
|
return strval($this->content); |
|
158
|
|
|
} |
|
159
|
|
|
|
|
160
|
6 |
|
public function getExtraData(): string |
|
161
|
|
|
{ |
|
162
|
6 |
|
return strval($this->extra); |
|
163
|
|
|
} |
|
164
|
|
|
} |
|
165
|
|
|
|
alex-kalanis /
remote-request
Loading history...