def get_domain_hash():
return Web3.solidityKeccak(
['bytes32', 'bytes32', 'bytes32', 'uint256', 'bytes32'], [
utils.hash_string(EIP712_DOMAIN_STRING),
utils.hash_string('P1Orders'),
utils.hash_string('1.0'), consts.NETWORK_ID,
utils.address_to_bytes32(consts.P1_ORDERS_ADDRESS)
]).hex()
def get_order_hash(order):
'''
Returns the final signable EIP712 hash for an order.
'''
struct_hash = Web3.solidityKeccak([
'bytes32', 'bytes32', 'uint256', 'uint256', 'uint256', 'uint256',
'bytes32', 'bytes32', 'uint256'
], [
utils.hash_string(EIP712_ORDER_STRUCT_STRING),
get_order_flags(order['salt'], order['isBuy'], order['limitFee']),
int(order['amount']),
int(order['limitPrice'] * consts.BASE_DECIMAL),
int(order['triggerPrice'] * consts.BASE_DECIMAL),
int(abs(order['limitFee']) * consts.BASE_DECIMAL),
utils.address_to_bytes32(order['maker']),
utils.address_to_bytes32(order['taker']),
int(order['expiration'])
]).hex()
return utils.get_eip712_hash(get_domain_hash(), struct_hash)
def get_domain_hash(pair):
contract_name = ''
contract_address = ''
if pair == consts.PAIR_PBTC_USDC:
contract_name = 'P1Orders'
contract_address = consts.BTC_P1_ORDERS_ADDRESS
elif pair == consts.PAIR_PLINK_USDC:
contract_name = 'P1Orders'
contract_address = consts.LINK_P1_ORDERS_ADDRESS
elif pair == consts.PAIR_WETH_PUSD:
contract_name = 'P1InverseOrders'
contract_address = consts.ETH_P1_ORDERS_ADDRESS
else:
raise ValueError('Invalid perpetual pair')
return Web3.solidityKeccak(
['bytes32', 'bytes32', 'bytes32', 'uint256', 'bytes32'], [
utils.hash_string(EIP712_DOMAIN_STRING),
utils.hash_string(contract_name),
utils.hash_string('1.0'), consts.NETWORK_ID,
utils.address_to_bytes32(contract_address)
]).hex()
def test_util_address_to_bytes32(self):
expected_result = "0x" + ADDRESS_1_NO_PREFIX.zfill(64)
assert utils.address_to_bytes32(ADDRESS_1_NO_PREFIX) == expected_result
assert utils.address_to_bytes32(ADDRESS_1) == expected_result
