def get_utxo(cls, address: str, amount: float):
api_key = os.environ.get('CRYPTOID_API_KEY')
if not api_key:
raise ValueError('API key for cryptoid is required to get UTXOs.')
data = clove_req_json(f'{cls.cryptoid_url()}/api.dws?q=unspent&key={api_key}&active={address}')
unspent = data.get('unspent_outputs', [])
for output in unspent:
output['value'] = int(output['value'])
unspent = sorted(unspent, key=lambda k: k['value'], reverse=True)
utxo = []
total = 0
for output in unspent:
value = from_base_units(output['value'])
utxo.append(
Utxo(
tx_id=output['tx_hash'],
vout=output['tx_ouput_n'],
value=value,
tx_script=output['script'],
)
)
total += value
if total > amount:
return utxo
logger.debug(f'Cannot find enough UTXO\'s. Found %.8f from %.8f.', total, amount)
def deserialize_raw_transaction(raw_transaction: str) -> Transaction:
'''
Deserializing raw transaction and returning Transaction object
Args:
raw_transaction (str): raw transaction hex string
Returns:
`ethereum.transactions.Transaction`: Ethereum transaction object
Raises:
ImpossibleDeserialization: if the raw transaction was not deserializable
Example:
>>> from clove.network import EthereumTestnet
>>> network = EthereumTestnet()
>>> transaction = network.deserialize_raw_transaction('0xf8f28201f4843b9aca008302251694ce07ab9477bc20790b88b398a2a9e0f626c7d26387b1a2bc2ec50000b8c47337c993000000000000000000000000000000000000000000000000000000005bd564819d3e84874c199ca4656d434060ec1a393750ab74000000000000000000000000000000000000000000000000d867f293ba129629a9f9355fa285b8d3711a9092000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000808080') # noqa: E501
<Transaction(821b)>
'''
try:
transaction = rlp.hex_decode(raw_transaction, Transaction)
logger.debug('Deserialization succeed')
except (ValueError, RLPException):
logger.warning(f'Deserialization with {raw_transaction} failed')
raise ImpossibleDeserialization()
transaction._cached_rlp = None
transaction.make_mutable()
return transaction
def extract_secret_from_redeem_transaction(self, tx_address: str) -> str:
'''
Extracting secret from redeem transaction.
Args:
tx_address (str): address of the redeem transaction
Returns:
str,: Secret string
Raises:
ValueError: When given transaction was not a redeem type transaction
Example:
>>> from clove.network import EthereumTestnet
>>> network = EthereumTestnet()
>>> network.extract_secret_from_redeem_transaction('0x9e41847c3cc780e4cb59902cf55657f0ee92642d9dee4145e090cbf206d4748f') # noqa: E501
b2eefaadbbefeb9d9467092b612464db7c6724f71b5c1d70c85853845728f0e9
'''
tx_dict = self.get_transaction(tx_address)
method_id = self.extract_method_id(tx_dict['input'])
if method_id != self.redeem:
logger.debug('Not a redeem transaction.')
raise ValueError('Not a redeem transaction.')
method_name = self.get_method_name(method_id)
input_types = get_abi_input_types(
find_matching_fn_abi(self.abi, fn_identifier=method_name))
input_values = decode_abi(input_types,
Web3.toBytes(hexstr=tx_dict['input'][10:]))
return input_values[0].hex()
def find_redeem_transaction(
recipient_address: str,
contract_address: str,
value: int,
subdomain: str,
) -> Optional[str]:
recipient_address = recipient_address.lower()
contract_address = contract_address.lower()
value = str(value)
etherscan_api_key = os.getenv('ETHERSCAN_API_KEY')
if not etherscan_api_key:
raise ValueError('API key for etherscan is required.')
data = clove_req_json(
f'http://{subdomain}.etherscan.io/api?module=account&action=txlistinternal'
f'&address={recipient_address}&apikey={etherscan_api_key}')
for result in reversed(data['result']):
if result['to'] == recipient_address and result[
'from'] == contract_address and result['value'] == value:
return result['hash']
logger.debug('Redeem transaction not found.')
def get_utxo(cls, address: str, amount: float):
data = clove_req_json(
f'{cls.blockcypher_url()}/addrs/{address}'
'?limit=2000&unspentOnly=true&includeScript=true&confirmations=6')
unspent = data.get('txrefs', [])
for output in unspent:
output['value'] = int(output['value'])
unspent = sorted(unspent, key=lambda k: k['value'], reverse=True)
utxo = []
total = 0
for output in unspent:
value = from_base_units(output['value'])
utxo.append(
Utxo(
tx_id=output['tx_hash'],
vout=output['tx_output_n'],
value=value,
tx_script=output['script'],
))
total += value
if total > amount:
return utxo
logger.debug(f'Cannot find enough UTXO\'s. Found %.8f from %.8f.',
total, amount)
def sign_raw_transaction(cls, raw_transaction: str,
private_key: str) -> str:
'''
Method to sign raw transactions.
Args:
raw_transaction (str): raw transaction hex string
private_key (str): private key hex string
Returns:
str: signed transaction hex string
Raises:
ValueError: if given private key is invalid
Example:
>>> from clove.network import EthereumTestnet
>>> network = EthereumTestnet()
>>> raw_transaction = '0xf8f28201f4843b9aca008302251694ce07ab9477bc20790b88b398a2a9e0f626c7d26387b1a2bc2ec50000b8c47337c993000000000000000000000000000000000000000000000000000000005bd564819d3e84874c199ca4656d434060ec1a393750ab74000000000000000000000000000000000000000000000000d867f293ba129629a9f9355fa285b8d3711a9092000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000808080' # noqa: E501
>>> network.sign_raw_transaction(raw_transaction, MY_PRIVATE_KEY)
'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' # noqa: E501
'''
transaction = cls.deserialize_raw_transaction(raw_transaction)
try:
transaction.sign(private_key)
logger.debug("Transaction signed")
except Exception:
logger.warning(
"Invalid private key. Transaction could not be signed.")
raise ValueError('Invalid private key.')
return cls.get_raw_transaction(transaction)
def get_latest_block(cls) -> Optional[int]:
'''
Returns the number of the latest block.
Returns:
int, None: number of the latest block or None if API is not working
Example:
>>> from clove.network import Bitcoin
>>> network = Bitcoin()
>>> network.get_latest_block()
544989
'''
try:
latest_block = clove_req_json(
f'{cls.api_url}/status?q=getInfo')['info']['blocks']
except (TypeError, KeyError):
logger.error(
f'Cannot get latest block, bad response ({cls.symbols[0]})')
return
if not latest_block:
logger.debug(f'Latest block not found ({cls.symbols[0]})')
return
logger.debug(f'Latest block found: {latest_block}')
return latest_block
def get_fee(cls) -> Optional[float]:
'''
Getting actual fee per kb
Returns:
float, None: actual fee per kb or None if eg. API is not responding
Example:
>>> from clove.network import BitcoinTestNet
>>> network = BitcoinTestNet()
>>> network.get_fee()
0.00024538
'''
try:
# This endpoint is available from v0.3.1
fee = clove_req_json(
f'{cls.api_url}/utils/estimatefee?nbBlocks=1')['1']
except (TypeError, KeyError):
logger.error(
f'Incorrect response from API when getting fee from {cls.api_url}/utils/estimatefee?nbBlocks=1'
)
return cls._calculate_fee()
if fee == -1:
logger.debug(f'Incorrect value in estimatedFee: {fee}')
return cls._calculate_fee()
fee = float(fee)
if fee > 0:
logger.warning(
f'Got fee = 0 for ({cls.symbols[0]}), calculating manually')
return fee
return cls._calculate_fee()
def publish(self, transaction: Union[str, Transaction]) -> Optional[str]:
'''
Method to publish transaction
Args:
transaction (str, `ethereum.transactions.Transaction`): signed transaction
Returns:
str, None: transaction hash or None if something goes wrong
Example:
>>> from clove.network import EthereumTestnet
>>> network = EthereumTestnet()
>>> signed_transaction = '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' # noqa: E501
>>> network.publish(signed_transaction)
'0x4fd41289b816f6122e59a0759bd10441ead75d550562f4b3aad2fddc56eb3274'
'''
raw_transaction = transaction if isinstance(
transaction, str) else self.get_raw_transaction(transaction)
try:
published_transaction = self.web3.eth.sendRawTransaction(
raw_transaction).hex()
logger.debug(
f'Transaction {published_transaction} published successful')
return published_transaction
except ValueError:
logger.warning(f'Unable to publish transaction {raw_transaction}')
return
def extract_secret_from_redeem_transaction(
cls, contract_address: str) -> Optional[str]:
'''
Extracting secret from redeem transaction based on contract address.
Args:
contract_address (str): address of the contract atomic swap contract
Returns:
str, None: Secret string or None if contract wasn't redeemed yet.
Example:
>>> from clove.network import BitcoinTestNet
>>> network = BitcoinTestNet()
>>> network.extract_secret_from_redeem_transaction('2N7Gxryn4dD1mdyGM3DMxMAwD7k3RBTJ1gP')
90f6b9b9a34acb486654b3e9cdc02cce0b8e40a8845924ffda68453ac2477d20
'''
contract_transactions = clove_req_json(
f'{cls.api_url}/addr/{contract_address}')['transactions']
if not contract_transactions:
logger.error(
f'Cannot get contract transactions ({cls.symbols[0]})')
return
if len(contract_transactions) < 2:
logger.debug(
'There is no redeem transaction on this contract yet.')
return
redeem_transaction = cls.get_transaction(contract_transactions[0])
if not redeem_transaction:
logger.error(f'Cannot get redeem transaction ({cls.symbols[0]})')
return
return cls.extract_secret(
scriptsig=redeem_transaction['vin'][0]['scriptSig']['hex'])
def extract_secret_from_redeem_transaction(
cls, contract_address: str) -> Optional[str]:
query = """
{
allAddressTxes(orderBy: TIME_ASC, condition: { address: "%s" }) {
nodes {
txId
}
}
}
""" % (contract_address)
data = clove_req_json(f'{cls.api_url}/graphql',
post_data={'query': query})
contract_transactions = data['data']['allAddressTxes']['nodes']
if not contract_transactions:
logger.error(
f'Cannot get contract transactions ({cls.symbols[0]})')
return
if len(contract_transactions) < 2:
logger.debug(
'There is no redeem transaction on this contract yet.')
return
redeem_transaction = cls.get_transaction(
contract_transactions[1]['txId'])
if not redeem_transaction:
logger.error(f'Cannot get redeem transaction ({cls.symbols[0]})')
return
return cls.extract_secret(scriptsig=redeem_transaction['vinsByTxId']
['nodes'][0]['scriptSig'])
def get_latest_block(cls) -> Optional[int]:
'''Returns the number of the latest block.'''
query = '''
{
allBlocks(orderBy: HEIGHT_DESC, first: 1) {
nodes {
height
}
}
}
'''
try:
json_response = clove_req_json(f'{cls.api_url}/graphql',
post_data={'query': query})
latest_block = json_response['data']['allBlocks']['nodes'][0][
'height']
except (TypeError, KeyError):
logger.error(
f'Cannot get latest block, bad response ({cls.symbols[0]})')
return
if not latest_block:
logger.debug(f'Latest block not found ({cls.symbols[0]})')
return
logger.debug(f'Latest block found: {latest_block}')
return latest_block
def refund(self):
contract = self.network.web3.eth.contract(address=self.contract_address, abi=self.network.abi)
if self.locktime > datetime.utcnow():
locktime_string = self.locktime.strftime('%Y-%m-%d %H:%M:%S')
logger.warning(f"This contract is still valid! It can't be refunded until {locktime_string} UTC.")
raise RuntimeError(f"This contract is still valid! It can't be refunded until {locktime_string} UTC.")
refund_func = contract.functions.refund(self.secret_hash, self.recipient_address)
tx_dict = {
'nonce': self.network.web3.eth.getTransactionCount(self.refund_address),
'value': 0,
'gas': ETH_REFUND_GAS_LIMIT,
}
tx_dict = refund_func.buildTransaction(tx_dict)
transaction = EthereumTokenTransaction(network=self.network)
transaction.tx = Transaction(
nonce=tx_dict['nonce'],
gasprice=tx_dict['gasPrice'],
startgas=tx_dict['gas'],
to=tx_dict['to'],
value=tx_dict['value'],
data=Web3.toBytes(hexstr=tx_dict['data']),
)
transaction.value = self.value
transaction.token = self.token
transaction.recipient_address = self.refund_address
logger.debug('Transaction refunded')
return transaction
def extract_secret_from_redeem_transaction(
cls, contract_address: str) -> Optional[str]:
'''
Extracting secret from redeem transaction based on contract address.
Args:
contract_address (str): address of the contract atomic swap contract
Returns:
str, None: Secret string or None if contract wasn't redeemed yet.
Example:
>>> from clove.network import BitcoinTestNet
>>> network = BitcoinTestNet()
>>> network.extract_secret_from_redeem_transaction('2N7Gxryn4dD1mdyGM3DMxMAwD7k3RBTJ1gP')
90f6b9b9a34acb486654b3e9cdc02cce0b8e40a8845924ffda68453ac2477d20
'''
data = clove_req_json(
f'{cls.blockcypher_url()}/addrs/{contract_address}/full')
if not data:
logger.error('Unexpected response from blockcypher')
raise ValueError('Unexpected response from blockcypher')
transactions = data['txs']
if len(transactions) == 1:
logger.debug('Contract was not redeemed yet.')
return
return cls.extract_secret(
scriptsig=transactions[0]['inputs'][0]['script'])
def create_connection(self,
node: str,
timeout=2) -> Optional[socket.socket]:
'''
Establish connection to a given node.
Args:
node (str): node domain or IP address
timeout (int): number of seconds to wait before raising timeout
Returns:
socket.socket: socket connection
Example:
>>> network.create_connection('104.248.185.143')
<socket.socket fd=11, family=AddressFamily.AF_INET, type=2049, proto=6, laddr=('10.93.5.21', 36086), raddr=('104.248.185.143', 18333)> # noqa: E501
'''
try:
self.connection = socket.create_connection(address=(node,
self.port),
timeout=timeout)
except (socket.timeout, ConnectionRefusedError, OSError):
logger.debug('[%s] Could not establish connection to this node',
node)
return
logger.debug('[%s] Connection established, sending version packet',
node)
if self.send_version():
return self.connection
def get_last_transactions(network: str) -> Optional[list]:
resp = clove_req(
f'https://chainz.cryptoid.info/{network}/api.dws?q=lasttxs')
if not resp or resp.status != 200:
logger.debug('Could not get last transactions for %s network', network)
return
return [t['hash'] for t in json.loads(resp.read().decode())]
def get_nodes(seed) -> list:
logger.debug('Getting nodes from seed node %s', seed)
try:
hostname, alias, nodes = socket.gethostbyname_ex(seed)
except (socket.herror, socket.gaierror):
return []
logger.debug('Got %s nodes', len(nodes))
return nodes
def connect(self) -> Optional[str]:
'''
Connects to some node from the network.
Returns:
str, None: node IP address or domain, None if doesn't connect to any node
Example:
>>> network.connect()
'198.251.83.19'
>>> network.connection
<socket.socket fd=12, family=AddressFamily.AF_INET, type=2049, proto=6, laddr=('10.93.5.21', 54300), raddr=('198.251.83.19', 18333)> # noqa: E501
'''
if self.connection and self.send_ping():
# already connected
return self.get_current_node()
if self.nodes:
# fake seed node to enter the seed nodes loop
self.seeds = (None, )
random_seeds = list(self.seeds)
shuffle(random_seeds)
for seed in random_seeds:
if seed is None:
# get hardcoded nodes
nodes = self.nodes
else:
# get nodes from seed node
nodes = self.get_nodes(seed)
nodes = self.filter_blacklisted_nodes(nodes)
for node in nodes:
if not self.create_connection(node):
self.terminate(node)
continue
messages = self.capture_messages([msg_version, msg_verack])
if not messages:
logger.debug(
'[%s] Failed to get version or version acknowledge message from node',
node)
self.terminate(node)
continue
logger.debug(
'[%s] Got version, sending version acknowledge message',
node)
if not self.send_verack():
self.terminate(node)
continue
return node
def send_message(self, msg: object, timeout: int = 2) -> bool:
try:
self.connection.settimeout(timeout)
self.connection.send(msg.to_bytes())
except (socket.timeout, ConnectionRefusedError, OSError) as e:
logger.debug('Failed to send %s message', msg.command.decode())
logger.debug(e)
return False
return True
def _get_block_hash(cls, block_number: int) -> str:
'''Getting block hash by its number'''
try:
block_hash = clove_req_json(f'{cls.api_url}/block-index/{block_number}')['blockHash']
except (TypeError, KeyError):
logger.error(f'Cannot get block hash for block {block_number} ({cls.symbols[0]})')
return
logger.debug(f'Found hash for block {block_number}: {block_hash}')
return block_hash
def get_balance(cls, wallet_address: str) -> float:
api_key = os.environ.get('CRYPTOID_API_KEY')
if api_key is None:
raise ValueError('API key for cryptoid is required to get balance.')
data = clove_req_json(f'{cls.cryptoid_url()}/api.dws?q=getbalance&a={wallet_address}&key={api_key}')
if data is None:
logger.debug('Could not get details for address %s in %s network', wallet_address, cls.symbols[0])
return
return data
def get_current_fee(network: str) -> Optional[float]:
"""Getting current network fee from Clove API"""
resp = clove_req_json(f'{CLOVE_API_URL}/fee/{network}')
if not resp:
logger.debug('Could not get current fee for %s network', network)
return
return resp['fee']
def extract_secret_from_redeem_transaction(
cls, contract_address: str) -> Optional[str]:
contract_transactions = clove_req_json(
f'https://mona.chainseeker.info/api/v1/txids/{contract_address}')
if len(contract_transactions) < 2:
logger.debug(
'There is no redeem transaction on this contract yet.')
return
redeem_transaction = cls.get_transaction(contract_transactions[1])
return cls.extract_secret(redeem_transaction['hex'])
def get_balance_blockcypher(network: str, address: str,
testnet: bool) -> Optional[float]:
subnet = 'test3' if testnet else 'main'
url = f'https://api.blockcypher.com/v1/{network.lower()}/{subnet}/addrs/{address}/full?limit=2000'
data = clove_req_json(url)
if data is None:
logger.debug('Could not get details for address %s in %s network',
address, network)
return
return from_base_units(data['balance'])
def publish(self, transaction: Union[str, Transaction]) -> Optional[str]:
""" Method to publish transaction """
raw_transaction = transaction if isinstance(transaction, str) else self.get_raw_transaction(transaction)
try:
published_transaction = self.web3.eth.sendRawTransaction(raw_transaction).hex()
logger.debug(f'Transaction {published_transaction} published successful')
return published_transaction
except ValueError:
logger.warning(f'Unable to publish transaction {raw_transaction}')
return
def extract_secret_from_redeem_transaction(self, tx_address: str) -> str:
tx_dict = self.get_transaction(tx_address)
method_id = self.extract_method_id(tx_dict['input'])
if method_id != self.redeem:
logger.debug('Not a redeem transaction.')
raise ValueError('Not a redeem transaction.')
method_name = self.get_method_name(method_id)
input_types = get_abi_input_types(find_matching_fn_abi(self.abi, fn_identifier=method_name))
input_values = decode_abi(input_types, Web3.toBytes(hexstr=tx_dict['input'][10:]))
return input_values[0].hex()
def _get_transactions_from_block(cls, block_number: int):
'''Getting transactions from block by given block number'''
block_hash = cls._get_block_hash(block_number)
if not block_hash:
return
transactions_page = clove_req_json(f'{cls.api_url}/txs/?block={block_hash}')
if not transactions_page:
return
transactions = transactions_page['txs']
logger.debug(f'Found {len(transactions)} in block {block_number}')
return transactions
def get_transaction_size(network: str, tx_hash: str) -> Optional[int]:
"""WARNING: this method is using undocumented endpoint used by chainz.cryptoid.info site."""
resp = clove_req(
f'https://chainz.cryptoid.info/explorer/tx.raw.dws?coin={network}&id={tx_hash}'
)
if not resp or resp.status != 200:
logger.debug('Could not get transaction %s size for %s network',
tx_hash, network)
return
tx_details = json.loads(resp.read().decode())
return tx_details['size']
def get_latest_block(cls) -> Optional[int]:
'''Returns the number of the latest block.'''
try:
latest_block = clove_req_json(f'{cls.api_url}/status?q=getInfo')['info']['blocks']
except (TypeError, KeyError):
logger.error(f'Cannot get latest block, bad response ({cls.symbols[0]})')
return
if not latest_block:
logger.debug(f'Latest block not found ({cls.symbols[0]})')
return
logger.debug(f'Latest block found: {latest_block}')
return latest_block
def sign_raw_transaction(cls, raw_transaction: str, private_key: str) -> str:
""" Method to sign raw transactions """
transaction = cls.deserialize_raw_transaction(raw_transaction)
try:
transaction.sign(private_key)
logger.debug("Transaction signed")
except Exception:
logger.warning("Invalid private key. Transaction could not be signed.")
raise ValueError('Invalid private key.')
return cls.get_raw_transaction(transaction)
