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
crate::ix!();
pub fn decompress_script(
script: &mut Script,
n_size: u32,
in_: &CompressedScript) -> bool {
match n_size {
0x00 => {
script.resize(25, Default::default());
script[0] = opcode_type::OP_DUP;
script[1] = opcode_type::OP_HASH160;
script[2] = 20;
unsafe {
libc::memcpy(
as_mut_cvoid!(&mut script[3]),
as_cvoid!(in_.as_ptr()),
20
);
}
script[23] = opcode_type::OP_EQUALVERIFY;
script[24] = opcode_type::OP_CHECKSIG;
return true;
},
0x01 => {
script.resize(23, Default::default());
script[0] = opcode_type::OP_HASH160;
script[1] = 20;
unsafe {
libc::memcpy(
as_mut_cvoid!(&mut script[2]),
as_cvoid!(in_.as_ptr()),
20
);
}
script[22] = opcode_type::OP_EQUAL;
return true;
},
0x02 | 0x03 => {
script.resize(35, Default::default());
script[0] = 33;
script[1] = n_size.try_into().unwrap();
unsafe {
libc::memcpy(
as_mut_cvoid!(&mut script[2]),
as_cvoid!(in_.as_ptr()),
32
);
}
script[34] = opcode_type::OP_CHECKSIG;
return true;
},
0x04 | 0x05 => {
let mut vch: [u8; 33] = [0; 33];
vch[0] = (n_size - 2).try_into().unwrap();
unsafe {
libc::memcpy(
as_mut_cvoid!(&mut vch[1]),
as_cvoid!(in_.as_ptr()),
32
);
}
let mut pubkey: PubKey = PubKey::new(&vch);
if !pubkey.decompress() {
return false;
}
assert!(pubkey.size() == 65);
script.resize(67, Default::default());
script[0] = 65;
unsafe {
libc::memcpy(
as_mut_cvoid!(&mut script[1]),
as_cvoid!(pubkey.data()),
65
);
}
script[66] = opcode_type::OP_CHECKSIG;
return true;
},
_ => {},
}
false
}