GOSTSec/sgminer
1
0
Fork 0
mirror of https://github.com/GOSTSec/sgminer synced 2025-01-27 15:04:17 +00:00
Code Issues Releases Wiki Activity

Generate header from correct hashing generation of the merkle root for GBT.

Browse Source
This commit is contained in:
Con Kolivas 2012-11-04 00:52:50 +11:00
parent cbc246eace
commit 2bfb293fe3
1 changed files with 48 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
cgminer.c
View File

@ -1362,13 +1362,16 @@ static void calc_midstate(struct work *work)
static void __build_gbt_coinbase(struct pool *pool)
{
unsigned char *coinbase;
int cbt_len, cal_len;
uint8_t *extra_len;
int cbt_len;
cbt_len = strlen(pool->coinbasetxn) / 2;
pool->coinbase_len = cbt_len + 4;
/* We add 4 bytes of extra data corresponding to nonce2 of stratum */
coinbase = calloc(pool->coinbase_len, 1);
cal_len = pool->coinbase_len + 1;
if (cal_len % 4)
cal_len += 4 - (cal_len % 4);
coinbase = calloc(cal_len, 1);
hex2bin(coinbase, pool->coinbasetxn, 42);
extra_len = (uint8_t *)(coinbase + 41);
*extra_len += 4;
@ -1390,7 +1393,7 @@ static bool __build_gbt_txns(struct pool *pool, json_t *res_val)
json_t *txn_array;
const char *txn0;
bool ret = false;
int i;
int i, cal_len;
free(pool->txn0);
pool->txn0 = NULL;
@ -1409,7 +1412,10 @@ static bool __build_gbt_txns(struct pool *pool, json_t *res_val)
txn0 = json_string_value(json_object_get(json_array_get(txn_array, 0), "data"));
pool->txn0_len = strlen(txn0) / 2;
pool->txn0 = calloc(pool->txn0_len , 1);;
cal_len = pool->txn0_len;
if (cal_len % 4)
cal_len += 4 - (cal_len % 4);
pool->txn0 = calloc(cal_len , 1);
if (unlikely(!pool->txn0))
quit(1, "Failed to calloc pool->txn0");
if (!hex2bin(pool->txn0, txn0, pool->txn0_len))
@ -1421,11 +1427,13 @@ static bool __build_gbt_txns(struct pool *pool, json_t *res_val)
for (i = 1; i < pool->gbt_txns; i++) {
json_t *txn_val = json_object_get(json_array_get(txn_array, i), "data");
const char *txn = json_string_value(txn_val);
int txn_len = strlen(txn), binlen;
int txn_len = strlen(txn);
unsigned char *txn_bin;
binlen = txn_len % 4 ? txn_len + 4 - (txn_len % 4) : txn_len;
txn_bin = calloc(binlen, 1);
cal_len = txn_len;
if (cal_len % 4)
cal_len += 4 - (cal_len % 4);
txn_bin = calloc(cal_len, 1);
if (unlikely(!txn_bin))
quit(1, "Failed to calloc txn_bin in __build_gbt_txns");
if (unlikely(!hex2bin(txn_bin, txn, txn_len / 2)))
@ -1441,21 +1449,25 @@ out:
static unsigned char *__gbt_merkleroot(struct pool *pool)
{
unsigned char *merkles, *txn0, *merkle_hash;
int i, txns;
int i, txns, cal_len;
if (!pool->gbt_txns) {
pool->txn0 = (unsigned char *)strdup((const char *)pool->gbt_coinbase);
pool->txn0_len = pool->coinbase_len;
}
txn0 = calloc(pool->coinbase_len + pool->txn0_len, 1);
cal_len = pool->coinbase_len + pool->txn0_len;
if (cal_len % 4)
cal_len += 4 - (cal_len % 4);
txn0 = calloc(cal_len, 1);
if (unlikely(!txn0))
quit(1, "Failed to calloc txn0hash");
memcpy(txn0, pool->gbt_coinbase, pool->coinbase_len);
memcpy(txn0 + pool->coinbase_len, pool->txn0, pool->txn0_len);
merkles = calloc(32 + (32 * pool->gbt_txns), 1);
cal_len = 32 + (32 * pool->gbt_txns);
merkles = calloc(cal_len, 1);
if (unlikely(!merkles))
quit(1, "Failed to calloc merkles in __gbt_merkleroot");
@ -1465,20 +1477,24 @@ static unsigned char *__gbt_merkleroot(struct pool *pool)
if (pool->gbt_txns > 1)
memcpy(merkles + 32, pool->txn_hashes, (pool->gbt_txns - 1) * 32);
merkle_hash = calloc((pool->gbt_txns + 1) * 32, 1);
cal_len = (pool->gbt_txns + 1) * 32;
merkle_hash = calloc(cal_len, 1);
if (unlikely(!merkle_hash))
quit(1, "Failed to calloc merkle_hash in __gbt_merkleroot");
txns = pool->gbt_txns + 1;
for (i = 0; i < txns; i++){
unsigned char tohash[64];
while (txns > 1) {
if (txns % 2) {
memcpy(&merkles[txns * 32], &merkles[(txns - 1) * 32], 32);
txns++;
}
for (i = 0; i < txns; i += 2){
unsigned char hashout[32];
memcpy(tohash, &merkles[i * 32], 32);
if (i + 1 < txns)
memcpy(tohash + 32, &merkles[(i + 1) * 32], 32);
else
memcpy(tohash + 32, &merkles[i * 32], 32);
gen_hash(tohash, merkle_hash + (i * 32), 64);
gen_hash(merkle_hash + (i * 32), hashout, 64);
memcpy(merkle_hash + (i / 2 * 32), hashout, 32);
}
txns /= 2;
}
return merkle_hash;
}
@ -1490,8 +1506,21 @@ static void gen_gbt_work(struct pool *pool, struct work *work)
mutex_lock(&pool->gbt_lock);
__build_gbt_coinbase(pool);
merkleroot = __gbt_merkleroot(pool);
memcpy(work->data, &pool->gbt_version, 4);
hex2bin(work->data + 4, pool->previousblockhash, 32);
memcpy(work->data + 4 + 32, merkleroot, 32);
memcpy(work->data + 4 + 32 + 32, &pool->curtime, 4);
hex2bin(work->data + 4 + 32 + 32 + 4, pool->gbt_bits, 4);
memset(work->data + 4 + 32 + 32 + 4 + 4, 0, 4); /* nonce */
mutex_unlock(&pool->gbt_lock);
if (opt_debug) {
char *header = bin2hex(work->data, 4 + 32 + 32 + 4 + 4 + 4);
applog(LOG_DEBUG, "Generated GBT header %s", header);
free(header);
}
free(merkleroot);
}