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Correct BIP34 height encodings for heights 1-16

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This commit is contained in:
Jonathan Toomim 2020-08-27 01:57:18 -07:00
parent 41c4e35677
commit 24ff5fa1e2
1 changed files with 11 additions and 5 deletions
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6
cpu-miner.c
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@ -468,12 +468,18 @@ static bool gbt_work_decode(const json_t *val, struct work *work)
le32enc((uint32_t *)(cbtx+37), 0xffffffff); /* prev txout index */
cbtx_size = 43;
/* BIP 34: height in coinbase */
if (work->height >= 1 && work->height <= 16) {
/* Use OP_1-OP_16 to conform to Bitcoin's implementation. */
cbtx[42] = work->height + 0x50;
cbtx[cbtx_size++] = 0x00; /* OP_0; pads to 2 bytes */
} else {
for (n = work->height; n; n >>= 8) {
cbtx[cbtx_size++] = n & 0xff;
if (n < 0x100 && n >= 0x80)
cbtx[cbtx_size++] = 0;
}
cbtx[42] = cbtx_size - 43;
}
cbtx[41] = cbtx_size - 42; /* scriptsig length */
le32enc((uint32_t *)(cbtx+cbtx_size), 0xffffffff); /* sequence */
cbtx_size += 4;