def __send(self, address, encrypted, sequence_number):
'''
Sends the encrypted blocks to the recipient as sequential
payment transactions.
Args:
address: The Stellar address of the recipient.
encrypted: The encrypted message blocks.
sequence_number: The current sequence number of the
sending account.
Returns:
True if successful, False otherwise.
'''
try:
for i in range(0, len(encrypted)):
sequence = str(sequence_number + i)
builder = Builder(secret = self.__seed, sequence = sequence)
builder.append_payment_op(address, '0.0000001', 'XLM')
builder.add_hash_memo(encrypted[i])
builder.sign()
builder.submit()
except:
return False
# todo: check sending status
return True
def create_transaction(sender_seed, recipient_key, hash_value):
builder = Builder(secret=sender_seed)
builder.append_payment_op(recipient_key, "1", "XLM")
builder.add_hash_memo(hash_value.encode())
builder.sign()
# TODO: handle possible errors
return builder.submit()
def test_add_memo(self, test_data):
builder = Builder(test_data.cold_secret, sequence=1, fee=100)
builder.add_text_memo("hello")
assert builder.memo == memo.TextMemo("hello")
builder.add_id_memo(123123)
assert builder.memo == memo.IdMemo(123123)
hash = b"\x95\xe5\xbb\x95\x15\xd9\x9f\x82\x9d\xf9\x93\xc3'\x8e\xeb\xf1\nj!\xda\xa4\xa1\xe4\xf2<6cG}\x17\x97\xfe"
builder.add_hash_memo(hash)
assert builder.memo == memo.HashMemo(hash)
builder.add_ret_hash_memo(hash)
assert builder.memo == memo.RetHashMemo(hash)
def post_to_blockchain(dataHash):
with open("/home/robi/stellar/.keys/private_key1.txt", 'r') as f:
private_key1 = f.read()
with open("/home/robi/stellar/.keys/public_key2.txt", 'r') as f:
public_key2 = f.read()
address_1_private = private_key1[:-1]
address_2_public = public_key2[:-1]
print("Data Hash: ", dataHash)
builder = Builder(secret=address_1_private)
builder.add_hash_memo(dataHash).append_payment_op(
destination=address_2_public, amount='1', asset_code='XLM')
builder.sign()
response = builder.submit()
print("Transaction hash: ", response["hash"])
return response["hash"]
class Interface:
"""
Interface to handle all API calls to third-party account.
"""
def __init__(self, account):
self.account = account
if account.secret:
self.builder = Builder(secret=account.secret,
network=account.network)
self.address = Address(address=account.account_id,
network=account.network)
def _get_new_receives(self):
# Get all stored transactions for account
transactions = ReceiveTransaction.filter(admin_account=self.account)
# Set the cursor according to latest stored transaction:
if not transactions:
cursor = None
else:
cursor = int(transactions.latest().data['paging_token']) + 1
# Get new transactions from the stellar network:
new_transactions = self._get_receives(cursor=cursor)
return new_transactions
def _get_receives(self, cursor=None):
# If cursor was specified, get all transactions after the cursor:
if cursor:
transactions = self.address.payments(cursor=cursor)['_embedded']['records']
print(transactions)
for i, tx in enumerate(transactions):
if tx.get('to') != self.account.account_id:
transactions.pop(i) # remove sends
# else just get all the transactions:
else:
transactions = self.address.payments()['_embedded']['records']
for i, tx in enumerate(transactions):
if tx.get('from') == self.account.account_id:
transactions.pop(i) # remove sends
return transactions
def _process_receive(self, tx):
# Get memo:
details = requests.get(url=tx['_links']['transaction']['href']).json()
memo = details.get('memo')
print('memo: ' + str(memo))
if memo:
account_id = memo + '*rehive.com'
user_account = UserAccount.objects.get(account_id=account_id)
user_email = user_account.user_id # for this implementation, user_id is the user's email
amount = to_cents(Decimal(tx['amount']), 7)
if tx['asset_type'] == 'native':
currency = 'XLM'
issuer = ''
else:
currency = tx['asset_code']
issuer_address = tx['asset_issuer']
issuer = Asset.objects.get(account_id=issuer_address, code=currency).issuer
# Create Transaction:
tx = ReceiveTransaction.objects.create(user_account=user_account,
external_id=tx['hash'],
recipient=user_email,
amount=amount,
currency=currency,
issuer=issuer,
status='Waiting',
data=tx,
metadata={'type': 'stellar'}
)
# TODO: Move tx.upload_to_rehive() to a signal to auto-run after Transaction creation.
tx.upload_to_rehive()
return True
@staticmethod
def _is_valid_address(address: str) -> bool:
# TODO: Replace with real address check.
if len(address) == 56 and '*' not in address:
return True
else:
return False
# This function should always be included if transactions are received to admin account and not added via webhooks:
def process_receives(self):
# Get new receive transactions
new_transactions = self._get_new_receives()
# Add each transaction to Rehive and log in transaction table:
for tx in new_transactions:
self._process_receive(tx)
# This function should always be included.
def process_send(self, tx):
if self._is_valid_address(tx.recipient):
address = tx.recipient
else:
federation = get_federation_details(tx.recipient)
if federation['memo_type'] == 'text':
self.builder.add_text_memo(federation['memo'])
elif federation['memo_type'] == 'id':
self.builder.add_id_memo(federation['memo'])
elif federation['memo_type'] == 'hash':
self.builder.add_hash_memo(federation['memo'])
else:
raise NotImplementedAPIError('Invalid memo type specified.')
address = federation['account_id']
# Create account or create payment:
if tx.currency == 'XLM':
try:
address_obj = self.address
address_obj.get()
self.builder.append_payment_op(address, tx.amount, 'XLM')
except APIException as exc:
if exc.status_code == 404:
self.builder.append_create_account_op(address, tx.amount)
else:
# Get issuer address details:
issuer_address = get_issuer_address(tx.issuer, tx.currency)
address_obj = self.address
address_obj.get()
self.builder.append_payment_op(address, tx.amount, tx.currency, issuer_address)
try:
self.builder.sign()
self.builder.submit()
except Exception as exc:
print(exc.payload)
def get_balance(self):
address = self.address
address.get()
for balance in address.balances:
if balance['asset_type'] == 'native':
return to_cents(Decimal(balance['balance']), 7)
def get_issuer_address(self, issuer, asset_code):
if self._is_valid_address(issuer):
address = issuer
else:
if '*' in issuer:
address = get_federation_details(issuer)['account_id']
else: # assume it is an anchor domain
address = address_from_domain(issuer, asset_code)
return address
def trust_issuer(self, asset_code, issuer):
logger.info('Trusting issuer: %s %s' % (issuer, asset_code))
address = self.get_issuer_address(issuer, asset_code)
self.builder.append_trust_op(address, asset_code)
try:
self.builder.sign()
self.builder.submit()
except Exception as exc:
print(exc.payload)
# Generate new crypto address/ account id
@staticmethod
def new_account_id(**kwargs):
metadata = kwargs.get('metadata')
account_id = metadata['username'] + '*' + getattr(settings, 'STELLAR_WALLET_DOMAIN')
return account_id
def get_account_details(self):
address = self.account.account_id
qr_code = create_qr_code_url('stellar:' + str(address))
return {'account_id': address, 'metadata': {'qr_code': qr_code}}