def validate_proof(proof: List[dict],
hex_target_hash: str,
hex_merkle_root: str,
is_big_endian: bool = False):
if is_big_endian:
hex_merkle_root = NeoData.to_reserve_hex_str(hex_merkle_root)
hex_target_hash = NeoData.to_reserve_hex_str(hex_target_hash)
if len(proof) == 0:
return hex_target_hash == hex_merkle_root
else:
hex_proof_hash = hex_target_hash
for node in proof:
if is_big_endian:
sibling = NeoData.to_reserve_hex_str(node['TargetHash'])
else:
sibling = node['TargetHash']
try:
direction = node['Direction'].lower()
except KeyError:
raise SDKException(ErrorCode.other_error('Invalid proof'))
if direction == 'left':
value = bytes.fromhex('01' + sibling + hex_proof_hash)
hex_proof_hash = Digest.sha256(value, is_hex=True)
elif direction == 'right':
value = bytes.fromhex('01' + hex_proof_hash + sibling)
hex_proof_hash = Digest.sha256(value, is_hex=True)
else:
raise SDKException(ErrorCode.other_error('Invalid proof.'))
return hex_proof_hash == hex_merkle_root
def echo_cli_exception(e: Union[PunicaException, SDKException]):
msg = e.args[1].replace('Other Error, ', '')
if 'transactor' in msg:
if isinstance(msg, str):
words = msg.split(' ')
words[0] = 'Payer'
words[1] = NeoData.to_b58_address(
NeoData.to_reserve_hex_str(words[1]))
msg = ' '.join(words)
echo(red(f'\n{msg}\n', bold=True))