def gettransaction(self, tx_id):
res = self.compose_request('dashboards/transaction/', data=tx_id)
tx = res['data'][tx_id]['transaction']
confirmations = 0 if tx['block_id'] <= 0 else res['context']['state'] - tx['block_id']
status = 'unconfirmed'
if confirmations:
status = 'confirmed'
witness_type = 'legacy'
if tx['has_witness']:
witness_type = 'segwit'
input_total = tx['input_total']
t = Transaction(locktime=tx['lock_time'], version=tx['version'], network=self.network,
fee=tx['fee'], size=tx['size'], hash=tx['hash'],
date=None if not confirmations else datetime.strptime(tx['time'], "%Y-%m-%d %H:%M:%S"),
confirmations=confirmations, block_height=tx['block_id'] if tx['block_id'] > 0 else None, status=status,
input_total=input_total, coinbase=tx['is_coinbase'],
output_total=tx['output_total'], witness_type=witness_type)
index_n = 0
if not res['data'][tx_id]['inputs']:
# This is a coinbase transaction, add input
t.add_input(prev_hash=b'\00' * 32, output_n=0, value=0)
for ti in res['data'][tx_id]['inputs']:
if ti['spending_witness']:
witnesses = b"".join([varstr(to_bytes(x)) for x in ti['spending_witness'].split(",")])
address = Address.import_address(ti['recipient'])
if address.script_type == 'p2sh':
witness_type = 'p2sh-segwit'
else:
witness_type = 'segwit'
t.add_input(prev_hash=ti['transaction_hash'], output_n=ti['index'],
unlocking_script=witnesses, index_n=index_n, value=ti['value'],
address=address, witness_type=witness_type)
else:
t.add_input(prev_hash=ti['transaction_hash'], output_n=ti['index'],
unlocking_script=ti['spending_signature_hex'], index_n=index_n, value=ti['value'],
address=ti['recipient'], unlocking_script_unsigned=ti['script_hex'])
index_n += 1
for to in res['data'][tx_id]['outputs']:
try:
deserialize_address(to['recipient'], network=self.network.name)
addr = to['recipient']
except EncodingError:
addr = ''
t.add_output(value=to['value'], address=addr, lock_script=to['script_hex'],
spent=to['is_spent'], output_n=to['index'], spending_txid=to['spending_transaction_hash'],
spending_index_n=to['spending_index'])
return t
def _parse_transaction(self, tx):
status = 'unconfirmed'
if tx['confirmations']:
status = 'confirmed'
witness_type = 'legacy'
if 'inputs' in tx and [ti['witness'] for ti in tx['inputs'] if ti['witness'] and ti['witness'] != ['NULL']]:
witness_type = 'segwit'
input_total = tx['input_amount_int']
t_time = None
if tx['time']:
t_time = datetime.utcfromtimestamp(tx['time'])
if tx['coinbase']:
input_total = tx['output_amount_int']
t = Transaction(locktime=tx['locktime'], version=int(tx['version']), network=self.network, fee=tx['fee_int'],
size=tx['size'], hash=tx['txid'], date=t_time,
confirmations=tx['confirmations'], block_height=tx['block'], status=status,
input_total=input_total, coinbase=tx['coinbase'],
output_total=tx['output_amount_int'], witness_type=witness_type)
index_n = 0
if tx['coinbase']:
t.add_input(prev_hash=b'\00' * 32, output_n=0, value=input_total)
else:
for ti in tx['inputs']:
unlocking_script = ti['script_sig']['hex']
witness_type = 'legacy'
if ti['witness'] and ti['witness'] != ['NULL']:
address = Address.import_address(ti['addresses'][0])
if address.script_type == 'p2sh':
witness_type = 'p2sh-segwit'
else:
witness_type = 'segwit'
unlocking_script = b"".join([varstr(to_bytes(x)) for x in ti['witness']])
t.add_input(prev_hash=ti['txid'], output_n=ti['vout'], unlocking_script=unlocking_script,
index_n=index_n, value=ti['value_int'], address=ti['addresses'][0], sequence=ti['sequence'],
witness_type=witness_type)
index_n += 1
for to in tx['outputs']:
spent = False
spending_txid = None
if 'spend_txid' in to and to['spend_txid']:
spent = True
spending_txid = to['spend_txid']
address = ''
if to['addresses']:
address = to['addresses'][0]
t.add_output(value=to['value_int'], address=address, lock_script=to['script_pub_key']['hex'],
spent=spent, output_n=to['n'], spending_txid=spending_txid)
return t
def test_varstr(self):
self.assertEqual(b'\x1eThis string has a length of 30',
varstr('This string has a length of 30'))