def validate(self, data):
"""
Validate signature
Validate Tx recipients are unique
Validate account_number (the sender) is not included as a Tx recipient
"""
account_number = data['account_number']
message = data['message']
txs = message['txs']
signature = data['signature']
verify_signature(message=sort_and_encode(message),
signature=signature,
verify_key=account_number)
recipient_list = [tx['recipient'] for tx in txs]
recipient_set = set(recipient_list)
if len(recipient_list) != len(recipient_set):
raise serializers.ValidationError('Tx recipients must be unique')
if account_number in recipient_set:
raise serializers.ValidationError(
'Block account_number not allowed as Tx recipient')
validate_keys(self, data)
return data
def validate(self, data):
"""Validate Txs exist"""
if not data['txs']:
raise serializers.ValidationError('Invalid Txs')
validate_keys(self, data)
return data
def validate(self, data):
"""
Check that there are no additional keys included in the data
"""
validate_keys(self, data)
return data
def validate(self, data):
"""Validate signature, unique Tx recipients, unique Tx fees and account_number not included as a Tx recipient"""
account_number = data['account_number']
message = data['message']
txs = message['txs']
signature = data['signature']
verify_signature(message=sort_and_encode(message),
signature=signature,
verify_key=account_number)
recipient_list = [tx['recipient'] for tx in txs]
recipient_set = set(recipient_list)
if len(recipient_list) != len(recipient_set):
raise serializers.ValidationError('Tx recipients must be unique')
if account_number in recipient_set:
raise serializers.ValidationError(
'Block account_number not allowed as Tx recipient')
bank_fee_exists = False
primary_validator_fee_exists = False
for tx in txs:
fee = tx.get('fee', None)
if fee is None:
continue
if fee == BANK:
if bank_fee_exists:
raise serializers.ValidationError(
'Multiple bank fees not allowed')
else:
bank_fee_exists = True
if fee == PRIMARY_VALIDATOR:
if primary_validator_fee_exists:
raise serializers.ValidationError(
'Multiple primary validator fees not allowed')
else:
primary_validator_fee_exists = True
validate_keys(self, data)
return data