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 test_builder(self):
cold_account = self.cold.address().decode()
hot_account = self.hot.address().decode()
fund(cold_account)
cold = Builder(self.cold.seed().decode()) \
.append_create_account_op(hot_account, 200) \
.append_set_options_op(inflation_dest=cold_account, set_flags=1,
home_domain='256kw.com', master_weight=10,
low_threshold=5, ) \
.append_trust_op(cold_account, 'BEER', 1000, source=hot_account) \
.append_allow_trust_op(hot_account, 'BEER', True)
# append twice for test
cold.append_payment_op(hot_account, 50.123, 'BEER', cold_account) \
.append_payment_op(hot_account, 50.123, 'BEER', cold_account)
cold.sign(self.hot.seed().decode())
try: # sign twice
cold.sign(self.hot.seed().decode())
except SignatureExistError:
assert True
except:
assert False
cold.sign()
assert len(cold.te.signatures) == 2
assert len(cold.ops) == 5
try:
response = cold.submit()
print(response)
except:
assert False
def trust_asset(text):
if CONF['private_key'] == '':
print(
'no private key setup - use set to set key or c to create wallet')
return
val = text.split(' ')
if len(val) != 3:
print('invalid syntax please use trust anchor asset')
return
url = 'https://raw.githubusercontent.com/stellarterm/stellarterm/master/directory/directory.json'
r = requests.get(url)
b = json.loads(r.text)
asset_name = val[-1].upper()
asset_anchor = val[1]
try:
asset_key = b['anchors'][asset_anchor]['assets'][asset_name].split(
'-')[1]
except:
print('unabled to find anchor or asset so quiting trust')
return
trst = Builder(CONF['private_key'], network=CONF['network'])
if val[0] == 'trust':
print('trusting.. ' + asset_name + ' ' + asset_key)
trst.append_trust_op(asset_key, asset_name)
else:
print('untrust ' + asset_name + ' ' + asset_key +
' please ensure your balance is 0 before this operation')
trst.append_trust_op(asset_key, asset_name, limit=0)
trst.sign()
trst.submit()
def build_unsigned_change_trust(source_address: str,
transaction_source_address: str,
sequence: str = None) -> Tuple[str, str]:
""""Build unsigned transfer transaction return unsigned XDR and transaction hash.
Args:
source_address: address need to be trust HOT
"""
builder = Builder(
address=transaction_source_address,
horizon=settings['HORIZON_URL'],
network=settings['PASSPHRASE'],
sequence=sequence,
)
builder.append_trust_op(settings['ISSUER'],
settings['ASSET_CODE'],
source=source_address,
limit=settings['LIMIT_ASSET'])
try:
unsigned_xdr = builder.gen_xdr()
tx_hash = builder.te.hash_meta()
except Exception as ex:
raise web.HTTPNotFound(text=str(ex))
return unsigned_xdr.decode('utf8'), binascii.hexlify(tx_hash).decode()
def test_network_and_horizon(self, setup, test_data):
builder = Builder(secret=test_data.cold_secret,
sequence=100,
network='MOE')
assert builder.network == 'MOE'
assert builder.horizon.horizon_uri == horizon_testnet().horizon_uri
builder = Builder(secret=test_data.cold_secret,
sequence=100,
network='testnet')
assert builder.network == 'TESTNET'
assert builder.horizon.horizon_uri == horizon_testnet().horizon_uri
builder = Builder(secret=test_data.cold_secret,
sequence=100,
network='public')
assert builder.network == 'PUBLIC'
assert builder.horizon.horizon_uri == horizon_livenet().horizon_uri
builder = Builder(secret=test_data.cold_secret,
sequence=100,
network='public',
horizon_uri=setup.horizon_endpoint_uri)
assert builder.network == 'PUBLIC'
assert builder.horizon.horizon_uri == Horizon(
horizon_uri=setup.horizon_endpoint_uri).horizon_uri
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 test_verify_challenge_tx(self):
server_kp = Keypair.random()
client_kp = Keypair.random()
timeout = 600
network = 'Public Global Stellar Network ; September 2015'
archor_name = "SDF"
challenge = Builder.challenge_tx(
server_secret=server_kp.seed().decode(),
client_account_id=client_kp.address().decode(),
archor_name=archor_name,
network=network,
timeout=timeout)
challenge.sign()
challenge_tx_server_signed = challenge.gen_xdr()
transaction = Builder(
client_kp.seed().decode(),
network='Public Global Stellar Network ; September 2015',
sequence=0,
fee=100)
transaction.import_from_xdr(challenge_tx_server_signed)
transaction.sign()
challenge_tx = transaction.gen_xdr()
Builder.verify_challenge_tx(
challenge_tx,
server_kp.address().decode(),
'Public Global Stellar Network ; September 2015')
def set_account(settype, var1):
print('set account')
sa = Builder(CONF['private_key'], network=CONF['network'])
if settype == 'inflation':
sa.append_set_options_op(inflation=var1)
else:
sa.append_set_options_op(home_domain=var1)
sa.sign()
sa.submit()
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 trust_asset(issuingkeys, receivingkeys, assetcode):
builder = Builder(secret=issuingkeys.seed().decode(), network='TESTNET')
builder.append_trust_op(destination=issuingkeys.address(
).decode(), code=assetcode, source=receivingkeys.address().decode())
builder.sign(secret=issuingkeys.seed().decode())
builder.sign(secret=receivingkeys.seed().decode())
return builder.submit()
def submit_operations(account_seed, operations, transaction_memo):
"""
This method signs the given operations and submits them to the Stellar network
:param str account_seed: Seed of the account submitting the operations. It is required to sign the transactions.
:param Operation operations: Operations to be submitted.
:param str transaction_memo: Text memo to be included in Stellar transaction. Maximum size of 28 bytes.
:return: Returns a string containing the server response or None if the transaction could not be submitted.
:rtype: str or None
"""
try:
builder = Builder(secret=account_seed)
except Exception:
# Too broad exception because no specific exception is being thrown by the stellar_base package.
# TODO: This should be fixed in future versions
print("An error occurred (Please check your Internet connection)")
return None
builder.add_text_memo(transaction_memo)
for operation in operations:
builder.append_op(operation)
builder.sign()
try:
return builder.submit()
except Exception:
# Too broad exception because no specific exception is being thrown by the stellar_base package.
# TODO: This should be fixed in future versions
print("An error occurred (Please check your Internet connection)")
return None
def send(self):
"""Text Memo needs to be added."""
if self.check_account_validity:
self.builder = Builder(
secret=self.sender,
horizon='https://horizon-testnet.stellar.org')
self.builder.append_payment_op(self.receiver, self.amount)
self.builder.sign()
self.builder.submit()
return True
return False
def send_payment(request,amount,currency,sender,account):
builder = Builder(secret=sender)
builder.append_payment_op(account,amount,currency)
builder.add_text_memo("first payment")
builder.sign()
s = builder.submit()
print(s['_links'])
return HttpResponse("send successfully plz check user transaction here")
def test_next_builder(self, setup, test_data):
builder = Builder(secret=test_data.cold_secret, sequence=1, horizon_uri=setup.horizon_endpoint_uri,
network=setup.network) \
.append_manage_data_op("hello", "world")
builder.sign()
next_builder = builder.next_builder()
assert next_builder.keypair == builder.keypair
assert next_builder.horizon.horizon_uri == builder.horizon.horizon_uri
assert next_builder.address == builder.address
assert next_builder.network == builder.network
assert next_builder.fee == builder.fee
assert next_builder.sequence == builder.sequence + 1
def test_federation_payment_not_found_raise(self, setup):
builder_fed = Builder(
address='GBTCBCWLE6YVTR5Y5RRZC36Z37OH22G773HECWEIZTZJSN4WTG3CSOES',
sequence=100)
with pytest.raises(
FederationError,
match=
'Cannot determine Stellar Address to Account ID translation via Federation server.'
):
builder_fed.federation_payment(fed_address="bad*fed-domain.com",
amount="100.5",
asset_code="XLM")
def build_generate_trust_wallet_transaction(
transaction_source_address: str,
source_address: str,
destination_address: str,
xlm_amount: Decimal,
hot_amount: Decimal = Decimal(0),
sequence=None,
) -> Tuple[bytes, bytes]:
""""Build transaction return unsigned XDR and transaction hash.
Args:
transaction_source_address: Owner of a transaction.
source_address: Owner of creator address and payment operations.
destination_address: wallet id of new wallet.
xlm_amount: starting xlm_balance of new wallet.
hot_amount: starting hot balance of new wallet.
"""
builder = Builder(
address=transaction_source_address,
horizon=settings['HORIZON_URL'],
network=settings['PASSPHRASE'],
sequence=sequence,
)
builder.append_create_account_op(source=source_address,
destination=destination_address,
starting_balance=xlm_amount)
try:
builder.append_trust_op(
source=destination_address,
destination=settings['ISSUER'],
code=settings['ASSET_CODE'],
limit=settings['LIMIT_ASSET'],
)
except DecodeError:
raise web.HTTPBadRequest(reason='Parameter values are not valid.')
except Exception as e:
msg = str(e)
raise web.HTTPInternalServerError(reason=msg)
if hot_amount > 0:
builder.append_payment_op(
source=source_address,
destination=destination_address,
asset_code=settings['ASSET_CODE'],
asset_issuer=settings['ISSUER'],
amount=hot_amount,
)
try:
unsigned_xdr = builder.gen_xdr()
except Exception as e:
raise web.HTTPBadRequest(
reason='Bad request, Please ensure parameters are valid.')
tx_hash = builder.te.hash_meta()
return unsigned_xdr, tx_hash
async def build_payment_operation(builder: Builder, source: str, parties_wallet: List):
for wallet in parties_wallet:
destination = wallet['address']
amount = Decimal(wallet['amount'])
if amount > 0:
builder.append_payment_op(
destination=destination,
amount=amount,
asset_code=settings['ASSET_CODE'],
asset_issuer=settings['ISSUER'],
source=source,
)
def transfer_lumen(sender, to_address, amount, memo=None):
# type: (User, str, float, Optional[str]) -> None
# ToDo: check remaining lumen of sending account (fee + base reserve)
# (take base reserve https://www.stellar.org/developers/guides/concepts/fees.html)
builder = Builder(secret=sender.stellaraccount.seed, network=network)
builder.append_payment_op(to_address, str(amount), 'XLM')
if memo:
builder.add_text_memo(memo) # string length <= 28 bytes
builder.sign()
builder.submit()
def tx(self, account, cosigner_keypair, weight):
builder = Builder(address=account.get_info()['account_id'])
builder.append_set_options_op(
high_threshold=10,
low_threshold=1,
master_weight=10,
med_threshold=1,
signer_weight=weight,
signer_address=cosigner_keypair.address().decode(),
signer_type='ed25519PublicKey')
return builder.gen_te()
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 _add_signer(builder: Builder, deal_address: str, party: str,
amount: Decimal):
"""Set permission of parties can signed transaction that generate from joint account"""
builder.append_set_options_op(source=deal_address,
signer_address=party,
signer_type='ed25519PublicKey',
signer_weight=1)
builder.append_payment_op(
source=party,
destination=deal_address,
asset_code=settings['ASSET_CODE'],
asset_issuer=settings['ISSUER'],
amount=amount,
)
def trust_asset(setup, secret_key, memo_text=None):
"""A helper to establish a trustline"""
builder = Builder(secret=secret_key,
horizon_uri=setup.horizon_endpoint_uri,
network=setup.network)
builder.append_trust_op(setup.test_asset.issuer, setup.test_asset.code)
if memo_text:
builder.add_text_memo(memo_text[:28]) # max memo length is 28
builder.sign()
reply = builder.submit()
return reply.get('hash')
def payment():
min_time = int(time.time()) - 10
max_time = min_time + 100
time_bounds = {'minTime': min_time, 'maxTime': max_time}
builder = Builder(dav_seed).add_time_bounds(time_bounds=time_bounds) \
.append_payment_op(destination=eve_address, amount='100', asset_code='XLM', asset_issuer=None)
builder.sign() # signed by dav with default seed
builder.sign(alice_seed) # signed by alice
builder.sign(bob_seed) # signed by bob
resp = builder.submit()
return resp
def send_asset(cls, setup, secret_key, address, amount, memo_text=None):
"""A helper to send asset"""
builder = Builder(secret=secret_key,
horizon_uri=setup.horizon_endpoint_uri,
network=setup.network)
builder.append_payment_op(address, amount, setup.test_asset.code,
setup.test_asset.issuer)
if memo_text:
builder.add_text_memo(memo_text[:28]) # max memo length is 28
builder.sign()
reply = builder.submit()
return reply.get('hash')
def create_signed_tx(private_key,
to_address,
amount,
network='PUBLIC',
memo=None):
amount = round(amount, 7)
builder = Builder(secret=private_key, network=network)
builder.append_payment_op(to_address, amount, 'XLM')
if memo:
builder.add_text_memo(memo)
builder.sign()
return builder.gen_xdr().decode()
def transfer(self, amount, to_address, description):
'''
'''
if float(self._get_balance()) < float(amount):
return 'Insufficient Balance'
seed = self.get_seed()
builder = Builder(secret=seed)
# builder = Builder(secret=seed, network='public') for LIVENET
builder.append_payment_op(to_address, amount, 'XLM')
builder.add_text_memo(description) # string length <= 28 bytes
builder.sign()
# Uses an internal horizon instance to submit over the network
builder.submit()
return 'SUCCESS'
def award_degree(self, address, student_name, birthdate, year):
"""Sends a transaction with a hash of the student's informations as text memo.
:param student_name: in format prenamesurname with only one prename
:param year: 4-digits number
:return: Horizon return of the tx
"""
memo = hash128((student_name+birthdate+year).encode())
builder = Builder(secret=self.kp.seed().decode())
builder.add_text_memo(memo)
builder.append_payment_op(address, 0.0000001)
builder.sign()
return builder.submit()
async def build_generate_merge_transaction(
transaction_source_address: str, wallet_detail: Dict, parties_wallet: List = None, sequence: str = None
) -> Tuple[Any, str]:
""" Builder transaction close escrow wallet by payment remaining HOT from escrow_wallet to provider_wallet and
merge account from escrow_wallet to creator_wallet, Finally, return xdr and transaction_hash
Args:
escrow_wallet: escrow wallet response from get_escrow_wallet_detail
parties_walles : list of provider address and amount for payback
"""
wallet_address = wallet_detail['escrow_address']
wallet_data = wallet_detail['data']
creator_address = (
wallet_data['creator_address']
if wallet_data and 'creator_address' in wallet_data.keys()
else await get_creator_address(wallet_address)
)
builder = Builder(
address=transaction_source_address,
horizon=settings['HORIZON_URL'],
network=settings['PASSPHRASE'],
sequence=sequence,
)
if not parties_wallet:
parties_wallet = await generate_parties_wallet(wallet_detail)
balance = Decimal(wallet_detail['asset'][settings['ASSET_CODE']])
if not await is_match_balance(parties_wallet, balance):
raise web.HTTPBadRequest(reason='Total amount not match wallet balance')
await build_payment_operation(builder, wallet_address, parties_wallet)
await build_remove_trustlines_operation(builder, wallet_address)
await build_remove_manage_data_operation(builder, wallet_address, wallet_data.keys())
await build_account_merge_operation(builder, wallet_address, creator_address)
try:
xdr = builder.gen_xdr()
except Exception as e:
raise web.HTTPBadRequest(reason='Bad request, Please ensure parameters are valid.')
tx_hash = builder.te.hash_meta()
return xdr.decode(), binascii.hexlify(tx_hash).decode()
def lock(systemdb, Account): q = Query() a_sk = systemdb.search(q.name == Account)[0]['sk'] b = Builder(secret = a_sk, network='TESTNET') b.append_set_options_op(master_weight=0, low_threshold=1, med_threshold=1, high_threshold=1) b.sign() print b.submit()
def burn_tokens(address):
"""
Burn the recent payments to the address for the percent specified in the BURN_RATE constant
:param address: address to burn the tokens on
:return: response object
"""
# get recent payments
address_obj = Address(address=address)
payments = address_obj.payments()
asset_sum = 0
for payment in payments:
asset_sum += payment
burn_sum = asset_sum * BURN_RATE
# send the BURN % of tokens to the issuer ultimately taking them out of circulation
builder = Builder(secret=REAL_SEED, network='public')
builder.add_text_memo(
"NWC daily burn: {}".format(burn_sum)).append_payment_op(
destination=ISSUER,
amount=burn_sum,
asset_code='NWC',
asset_issuer=ISSUER)
builder.sign()
response = builder.submit()
return response
def bounty_dispatcher(document, amount):
"""
Dispatch amount specified to the destination address
:param document: Desetination address
:param amount: Amount of nwc to dispatch
:return: response object
"""
for line in document:
builder = Builder(secret=REAL_SEED, network='public')
builder.add_text_memo(
"NWC bounty reward amount: {}".format(amount)).append_payment_op(
destination=line,
amount=amount,
asset_code='NWC',
asset_issuer=ISSUER)
builder.sign()
response = builder.submit()
print(response)
with open("bounty.log", "a+") as log:
log.write("\n")
log.write(datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S"))
log.write("\n")
log.write("=============================================")
log.write("\n")
log.write(json.dumps(response))
log.write("\n")
return response
def cancel_all_offers(self):
# 取消当前交易对的所有委单
offers = self.handle_offers_data()
builder = Builder(secret=self.seed, network=self.network, horizon=self.horizon_url)
for offer in offers:
builder.append_manage_offer_op(selling_code=self.selling_asset.code,
selling_issuer=self.selling_asset.issuer,
buying_code=self.buying_asset.code,
buying_issuer=self.buying_asset.issuer,
amount='0',
price='1',
offer_id=offer['id'])
builder.sign()
builder.submit()
def create_offers(self):
# 创建挂单。这里是两个订单
# 买入价格 = 买一价 * (1 - buying_rate)
# 卖出价格 = 卖一价 * (1 + selling_rate)
market_price = self.get_price()
builder = Builder(secret=self.seed, network=self.network, horizon=self.horizon_url)
# 卖出 base_asset
selling_price = round(float(market_price['ask']) * (1 + self.selling_rate), 7)
builder.append_manage_offer_op(selling_code=self.selling_asset.code, selling_issuer=self.selling_asset.issuer,
buying_code=self.buying_asset.code,
buying_issuer=self.buying_asset.issuer,
amount=self.selling_amount, price=selling_price)
# 买入 base_asset
buying_tmp_price = float(market_price['bid']) * (1 - self.buying_rate)
buying_price = round(1 / buying_tmp_price, 7)
buying_amount = round(self.buying_amount * buying_tmp_price, 7)
builder.append_manage_offer_op(selling_code=self.buying_asset.code,
selling_issuer=self.buying_asset.issuer,
buying_code=self.selling_asset.code,
buying_issuer=self.selling_asset.issuer,
amount=buying_amount,
price=buying_price)
builder.sign()
builder.submit()
def test_builder_xdr(self):
cold_account = self.cold.address().decode()
hot_account = self.hot.address().decode()
fund(cold_account)
fund(hot_account)
cold = Builder(self.cold.seed().decode()) \
.append_trust_op(cold_account, 'BEER', 1000, hot_account) \
.append_payment_op(hot_account, 100, 'BEER', cold_account) \
.append_payment_op(cold_account, 2.222,
'BEER', cold_account, hot_account)
xdr = cold.gen_xdr()
hot = Builder(self.hot.seed().decode())
hot.import_from_xdr(xdr)
# hot.sign()
try:
response = hot.submit()
except:
assert False
