|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace BitWasp\Bitcoin\Transaction\Factory\ScriptInfo; |
|
4
|
|
|
|
|
5
|
|
|
use BitWasp\Bitcoin\Locktime; |
|
6
|
|
|
use BitWasp\Bitcoin\Script\Interpreter\Number; |
|
7
|
|
|
use BitWasp\Bitcoin\Script\Opcodes; |
|
8
|
|
|
use BitWasp\Bitcoin\Script\Parser\Operation; |
|
9
|
|
|
use BitWasp\Bitcoin\Script\ScriptInterface; |
|
10
|
|
|
|
|
11
|
|
|
class CheckLocktimeVerify |
|
12
|
|
|
{ |
|
13
|
|
|
/** |
|
14
|
|
|
* @var int |
|
15
|
|
|
*/ |
|
16
|
|
|
private $nLockTime; |
|
17
|
|
|
|
|
18
|
|
|
/** |
|
19
|
|
|
* @var bool |
|
20
|
|
|
*/ |
|
21
|
|
|
private $toBlock; |
|
22
|
|
|
|
|
23
|
|
|
/** |
|
24
|
|
|
* CheckLocktimeVerify constructor. |
|
25
|
|
|
* @param int $nLockTime |
|
26
|
|
|
*/ |
|
27
|
16 |
|
public function __construct($nLockTime) |
|
28
|
|
|
{ |
|
29
|
16 |
|
if ($nLockTime < 0) { |
|
30
|
|
|
throw new \RuntimeException("locktime cannot be negative"); |
|
31
|
|
|
} |
|
32
|
|
|
|
|
33
|
16 |
|
if ($nLockTime > Locktime::INT_MAX) { |
|
34
|
|
|
throw new \RuntimeException("nLockTime exceeds maximum value"); |
|
35
|
|
|
} |
|
36
|
|
|
|
|
37
|
16 |
|
$this->nLockTime = $nLockTime; |
|
38
|
16 |
|
$this->toBlock = (new Locktime())->isLockedToBlock($nLockTime); |
|
39
|
16 |
|
} |
|
40
|
|
|
|
|
41
|
|
|
/** |
|
42
|
|
|
* @param Operation[] $chunks |
|
43
|
|
|
* @param bool $fMinimal |
|
44
|
|
|
* @return static |
|
45
|
|
|
*/ |
|
46
|
166 |
|
public static function fromDecodedScript(array $chunks, $fMinimal = false) |
|
47
|
|
|
{ |
|
48
|
166 |
|
if (count($chunks) !== 3) { |
|
49
|
166 |
|
throw new \RuntimeException("Invalid number of items for CLTV"); |
|
50
|
|
|
} |
|
51
|
|
|
|
|
52
|
132 |
|
if (!$chunks[0]->isPush()) { |
|
53
|
102 |
|
throw new \InvalidArgumentException('CLTV script had invalid value for time'); |
|
54
|
|
|
} |
|
55
|
|
|
|
|
56
|
30 |
|
if ($chunks[1]->getOp() !== Opcodes::OP_CHECKLOCKTIMEVERIFY) { |
|
57
|
14 |
|
throw new \InvalidArgumentException('CLTV script invalid opcode'); |
|
58
|
|
|
} |
|
59
|
|
|
|
|
60
|
16 |
|
if ($chunks[2]->getOp() !== Opcodes::OP_DROP) { |
|
61
|
|
|
throw new \InvalidArgumentException('CLTV script invalid opcode'); |
|
62
|
|
|
} |
|
63
|
|
|
|
|
64
|
16 |
|
$numLockTime = Number::buffer($chunks[0]->getData(), $fMinimal, 5); |
|
65
|
|
|
|
|
66
|
16 |
|
return new static($numLockTime->getInt()); |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
|
|
/** |
|
70
|
|
|
* @param ScriptInterface $script |
|
71
|
|
|
* @return CheckLocktimeVerify |
|
72
|
|
|
*/ |
|
73
|
|
|
public static function fromScript(ScriptInterface $script) |
|
74
|
|
|
{ |
|
75
|
|
|
return static::fromDecodedScript($script->getScriptParser()->decode()); |
|
76
|
|
|
} |
|
77
|
|
|
|
|
78
|
|
|
/** |
|
79
|
|
|
* @return int |
|
80
|
|
|
*/ |
|
81
|
16 |
|
public function getLocktime() |
|
82
|
|
|
{ |
|
83
|
16 |
|
return $this->nLockTime; |
|
84
|
|
|
} |
|
85
|
|
|
|
|
86
|
|
|
/** |
|
87
|
|
|
* @return bool |
|
88
|
|
|
*/ |
|
89
|
2 |
|
public function isLockedToBlock() |
|
90
|
|
|
{ |
|
91
|
2 |
|
return $this->toBlock; |
|
92
|
|
|
} |
|
93
|
|
|
} |
|
94
|
|
|
|
Bit-Wasp /
bitcoin-php
