def _recover(data: bytes, signature: bytes) -> Address:
""" Use eth_sign compatible hasher to recover address from signed data """
return to_canonical_address(
eth_recover(
data=data,
signature=signature,
))
def test_client_fee_info(generate_raiden_clients):
c1, c2 = generate_raiden_clients(2)
channel_identifier = c1.open_channel(c2.address)
assert is_channel_identifier(channel_identifier)
fi = c1.get_fee_info(c2.address, nonce=5, relative_fee=1000, chain_id=2)
fee_info_signer = eth_recover(
data=fi.serialize_bin(),
signature=decode_hex(fi.signature),
)
assert is_same_address(fee_info_signer, c1.address)
assert fi.nonce == 5
assert fi.relative_fee == 1000
assert fi.chain_id == 2
def update_transfer(
self,
channel_identifier: typing.ChannelID,
partner: typing.Address,
balance_hash: typing.BalanceHash,
nonce: typing.Nonce,
additional_hash: typing.AdditionalHash,
closing_signature: typing.Signature,
non_closing_signature: typing.Signature,
):
log_details = {
'token_network': pex(self.address),
'node': pex(self.node_address),
'partner': pex(partner),
'nonce': nonce,
'balance_hash': encode_hex(balance_hash),
'additional_hash': encode_hex(additional_hash),
'closing_signature': encode_hex(closing_signature),
'non_closing_signature': encode_hex(non_closing_signature),
}
log.debug('updateNonClosingBalanceProof called', **log_details)
data_that_was_signed = pack_balance_proof(
nonce=nonce,
balance_hash=balance_hash,
additional_hash=additional_hash,
channel_identifier=channel_identifier,
token_network_identifier=self.address,
chain_id=self.proxy.contract.functions.chain_id().call(),
)
try:
signer_address = to_canonical_address(
eth_recover(
data=data_that_was_signed,
signature=closing_signature,
))
# InvalidSignature is raised by eth_utils.eth_recover if signature
# is not bytes or has the incorrect length
#
# ValueError is raised if the PublicKey instantiation failed, let it
# propagate because it's a memory pressure problem.
#
# Exception is raised if the public key recovery failed.
except Exception: # pylint: disable=broad-except
msg = "Couldn't verify the balance proof signature"
log.critical(f'updateNonClosingBalanceProof failed, {msg}',
**log_details)
raise RaidenUnrecoverableError(msg)
if signer_address != partner:
msg = 'Invalid balance proof signature'
log.critical(f'updateNonClosingBalanceProof failed, {msg}',
**log_details)
raise RaidenUnrecoverableError(msg)
self._check_for_outdated_channel(
self.node_address,
partner,
channel_identifier,
)
detail = self.detail_channel(
participant1=self.node_address,
participant2=partner,
channel_identifier=channel_identifier,
)
if detail.state != ChannelState.CLOSED:
msg = 'Channel is not in a closed state'
log.critical(f'updateNonClosingBalanceProof failed, {msg}',
**log_details)
raise RaidenUnrecoverableError(msg)
if detail.settle_block_number < self.client.block_number():
msg = ('updateNonClosingBalanceProof cannot be called '
'because the settlement period is over')
log.critical(f'updateNonClosingBalanceProof failed, {msg}',
**log_details)
raise RaidenRecoverableError(msg)
transaction_hash = self.proxy.transact(
'updateNonClosingBalanceProof',
safe_gas_limit(GAS_REQUIRED_FOR_UPDATE_BALANCE_PROOF),
channel_identifier,
partner,
self.node_address,
balance_hash,
nonce,
additional_hash,
closing_signature,
non_closing_signature,
)
self.client.poll(transaction_hash)
receipt_or_none = check_transaction_threw(self.client,
transaction_hash)
if receipt_or_none:
if detail.settle_block_number < receipt_or_none['blockNumber']:
msg = ('updateNonClosingBalanceProof transaction '
'was mined after settlement finished')
log.critical(f'updateNonClosingBalanceProof failed, {msg}',
**log_details)
raise RaidenRecoverableError(msg)
# This should never happen if the settlement window and gas price
# estimation is done properly
channel_settled = self.channel_is_settled(
participant1=self.node_address,
participant2=partner,
channel_identifier=channel_identifier,
)
if channel_settled is True:
msg = 'Channel is settled'
log.critical(f'updateNonClosingBalanceProof failed, {msg}',
**log_details)
raise RaidenRecoverableError(msg)
msg = 'Update NonClosing balance proof'
log.critical(f'updateNonClosingBalanceProof failed, {msg}',
**log_details)
raise TransactionThrew(msg, receipt_or_none)
log.info('updateNonClosingBalanceProof successful', **log_details)