def json_to_tx(coin, data):
t = messages.TransactionType()
t.version = data["version"]
t.lock_time = data.get("locktime")
if coin["decred"]:
t.expiry = data["expiry"]
t.inputs = [_json_to_input(coin, vin) for vin in data["vin"]]
t.bin_outputs = [_json_to_bin_output(coin, vout) for vout in data["vout"]]
# zcash extra data
if is_zcash(coin) and t.version >= 2:
joinsplit_cnt = len(data["vjoinsplit"])
if joinsplit_cnt == 0:
t.extra_data = b"\x00"
elif joinsplit_cnt >= 253:
# we assume cnt < 253, so we can treat varIntLen(cnt) as 1
raise ValueError("Too many joinsplits")
elif "hex" not in data:
raise ValueError(
"Raw TX data required for Zcash joinsplit transaction")
else:
rawtx = bytes.fromhex(data["hex"])
extra_data_len = 1 + joinsplit_cnt * 1802 + 32 + 64
t.extra_data = rawtx[-extra_data_len:]
if is_polis(coin):
dip2_type = data.get("type", 0)
if t.version == 3 and dip2_type != 0:
# It's a DIP2 special TX with payload
if "extraPayloadSize" not in data or "extraPayload" not in data:
raise ValueError("Payload data missing in DIP2 transaction")
if data["extraPayloadSize"] * 2 != len(data["extraPayload"]):
raise ValueError(
"extra_data_len (%d) does not match calculated length (%d)"
%
(data["extraPayloadSize"], len(data["extraPayload"]) * 2))
t.extra_data = polis_utils.num_to_varint(
data["extraPayloadSize"]) + bytes.fromhex(data["extraPayload"])
# Trezor firmware doesn't understand the split of version and type, so let's mimic the
# old serialization format
t.version |= dip2_type << 16
return t
def json_to_tx(coin, data):
t = messages.TransactionType()
t.version = data["version"]
t.lock_time = data.get("locktime")
if coin["decred"]:
t.expiry = data["expiry"]
t.inputs = []
for vin in data["vin"]:
if "scriptSig" in vin and vin["scriptSig"]["hex"] == "c9":
i = messages.TxInputType()
i.prev_hash = b"\0" * 32
i.prev_index = vin["sequence"]
i.script_sig = bytes.fromhex(vin["scriptSig"]["hex"])
i.sequence = vin["sequence"]
t.inputs.append(i)
else:
t.inputs.append(_json_to_input(coin, vin))
t.bin_outputs = [_json_to_bin_output(coin, vout) for vout in data["vout"]]
# zcash extra data
if is_zcash(coin) and t.version >= 2:
joinsplit_cnt = len(data["vjoinsplit"])
if joinsplit_cnt == 0:
t.extra_data = b"\x00"
elif joinsplit_cnt >= 253:
# we assume cnt < 253, so we can treat varIntLen(cnt) as 1
raise ValueError("Too many joinsplits")
elif "hex" not in data:
raise ValueError(
"Raw TX data required for Zcash joinsplit transaction")
else:
rawtx = bytes.fromhex(data["hex"])
extra_data_len = 1 + joinsplit_cnt * 1802 + 32 + 64
t.extra_data = rawtx[-extra_data_len:]
if is_extra_payload(coin):
dip2_type = data.get("type", 0)
if t.version == 3 and dip2_type != 0:
# It's a DIP2 special TX with payload
if dip2_type == DashTxType.SPEC_CB_TX:
data["extraPayload"] = serialize_cbTx(data)
elif dip2_type == DashTxType.LELANTUS_JSPLIT:
data["extraPayload"] = serialize_Lelantus(data)
else:
raise NotImplementedError(
"Only spending of V3 coinbase outputs has been inplemented. "
"Please file an issue at https://github.com/firoorg/firo-masternode-tool/issues containing "
"the tx type=" + str(dip2_type))
data["extraPayloadSize"] = len(data["extraPayload"]) >> 1
if "extraPayloadSize" not in data or "extraPayload" not in data:
raise ValueError("Payload data missing in DIP2 transaction")
if data["extraPayloadSize"] * 2 != len(data["extraPayload"]):
raise ValueError(
"extra_data_len (%d) does not match calculated length (%d)"
%
(data["extraPayloadSize"], len(data["extraPayload"]) * 2))
t.extra_data = dash_utils.num_to_varint(
data["extraPayloadSize"]) + bytes.fromhex(data["extraPayload"])
# Trezor firmware doesn't understand the split of version and type, so let's mimic the
# old serialization format
t.version |= dip2_type << 16
return t
