bool deser_msg_getblocks(struct msg_getblocks *gb, struct const_buffer *buf)
{
msg_getblocks_free(gb);
if (!deser_bp_locator(&gb->locator, buf)) return false;
if (!deser_u256(&gb->hash_stop, buf)) return false;
return true;
}
btc_bool btc_tx_in_deserialize(btc_tx_in* tx_in, struct const_buffer* buf)
{
deser_u256(tx_in->prevout.hash, buf);
if (!deser_u32(&tx_in->prevout.n, buf))
return false;
if (!deser_varstr(&tx_in->script_sig, buf))
return false;
if (!deser_u32(&tx_in->sequence, buf))
return false;
return true;
}
static bool blkdb_read_rec(struct blkdb *db, const struct p2p_message *msg)
{
struct blkinfo *bi;
struct const_buffer buf = { msg->data, msg->hdr.data_len };
if (strncmp(msg->hdr.command, "rec", 12))
return false;
bi = bi_new();
if (!bi)
return false;
/* deserialize record */
if (!deser_u256(&bi->hash, &buf))
goto err_out;
if (!deser_bp_block(&bi->hdr, &buf))
goto err_out;
/* verify that provided hash matches block header, as an additional
* self-verification step
*/
bp_block_calc_sha256(&bi->hdr);
if (!bu256_equal(&bi->hash, &bi->hdr.sha256))
goto err_out;
/* verify block may be added to chain, then add it */
struct blkdb_reorg dummy;
if (!blkdb_connect(db, bi, &dummy))
goto err_out;
return true;
err_out:
bi_free(bi);
return false;
}
