def check_signature(data, debug=False):
'''Check address and signature'''
_from = data.get('from')
_to = data.get('to')
# Check addresses if they are Eth compatible
if not w3.isAddress(_from) or not w3.isAddress(_to):
return False
msg = '{0}-{1}-{2}-{3}-{4}-{5}'.format(data.get('from'), data.get('to'),
data.get('amount'),
data.get('timestamp'),
data.get('fees'), data.get('data'))
msg_hash = defunct_hash_message(text=msg)
pub_key = w3.eth.account.recoverHash( # pylint: disable=no-member
msg_hash,
signature=data.get('signature'))
if debug:
print('POST: {0} | Check: {1}'.format(data.get('from'), pub_key),
pub_key == data.get('from'))
if data.get('from') == pub_key:
return True
return False
def verify(tx_hash, recipient_id):
w3 = Web3(
HTTPProvider(
'https://rinkeby.infura.io/cc1357bd5e1347d3b9a3433085e61ae5'))
# check the Addresses and the Amount of the Sender
if w3.isAddress(recipient_id) == False or w3.isAddress(Stamp_id) == False:
return None
# wait until the Transaction is finished
# w3.eth.waitForTransactionReceipt(tx_hash) # not working unvalid Transactions brings TimeOut
# get the Transaction
trans = w3.eth.getTransaction(tx_hash)
# check the existing of the Transaction
if trans == None:
return None
# remove the 0x from the recipient-Address and lowerCase the recipient-Address
rec_id = recipient_id[2:]
rec_id = rec_id.lower()
# check the correct recipient of the transaction
rec_result = False
if rec_id in trans['input']:
rec_result = True
# check the correct contract of the transaction
contr_result = False
if Stamp_id.lower() == trans['to'].lower():
contr_result = True
# recipient and contract correct ?
result = rec_result and contr_result
return result
def list(self, request, address, *args, **kwargs):
'''GET addresses informations'''
if not w3.isAddress(address):
return Response({
'status': status.HTTP_400_BAD_REQUEST,
'msg': 'Address not valid'
})
query = models.Address.objects.filter(address=address.lower()).first()
if not query:
return Response({
'status': status.HTTP_200_OK,
'data': {
'address': address.lower(),
'balance': 0,
'transactions': []
}
})
serialized = self.serializer_class(query)
return Response({
'status': status.HTTP_200_OK,
'data': serialized.data
})
def amountStamps(sender_id):
w3 = Web3(
HTTPProvider(
'https://rinkeby.infura.io/cc1357bd5e1347d3b9a3433085e61ae5'))
# check the Addresses and the Amount of the Sender
if w3.isAddress(sender_id) == False or w3.isAddress(Stamp_id) == False:
return None
# load the contract for the Stamp
address_contract = w3.toChecksumAddress(Stamp_id)
contract = w3.eth.contract(address=address_contract, abi=EIP20_ABI)
# load the amount of Stamps for the sender
address_sender = w3.toChecksumAddress(sender_id)
stamp_amount = contract.call().balanceOf(address_sender)
return (stamp_amount)
def send(sender_id, sender_key, recipient_id):
w3 = Web3(
HTTPProvider(
'https://rinkeby.infura.io/cc1357bd5e1347d3b9a3433085e61ae5'))
# check the Addresses and the Amount of the Sender
if w3.isAddress(sender_id) == False or w3.isAddress(
recipient_id) == False or w3.isAddress(Stamp_id) == False:
return None
if amountStamps(sender_id) < 1:
return None
# load the contract for the Stamp
address_contract = w3.toChecksumAddress(Stamp_id)
contract = w3.eth.contract(address=address_contract, abi=EIP20_ABI)
# get the nonce for the sender
nonce = w3.eth.getTransactionCount(sender_id)
# build the Transaction
stamp_txn = contract.functions.transfer(
w3.toChecksumAddress(recipient_id),
1,
).buildTransaction({
'chainId': 4,
'gas': 70000,
'gasPrice': w3.toWei('1', 'gwei'),
'nonce': nonce,
})
# sign the Transaction
signed_txn = w3.eth.account.signTransaction(stamp_txn,
private_key=sender_key)
#send the Transaction
result = w3.eth.sendRawTransaction(signed_txn.rawTransaction)
result = w3.toHex(result)
return result
def pre_fund(pre_funded_accounts):
alloc = {}
for account in pre_funded_accounts:
if w3.isAddress(account['address']) and int(account['balance']) > 0:
address = account['address'][2:]
balance_wei = w3.toWei(account['balance'], 'ether')
alloc[address] = {
"balance": w3.toHex(balance_wei)
}
return alloc
def Ethertxn():
if not path.exists('/home/pi/EthereumWallet_local_API/wallet/keystore'):
return make_response(jsonify({'response': "Address not exists"}))
data = request.values['data'].split(',')
print(data)
nonce = int(data[3].split("\b")[0])
password = data[0]
mk = makeTxn(password)
print('mktxn: ', mk.password)
if not w3.isAddress(data[1]):
return make_response(jsonify({'response': "Address Error"}))
try:
tmp = mk.EtherTxn(data[1], float(data[2]), nonce, int(data[4]),
int(data[5]))
#tmp = hex(int.from_bytes(tmp,byteorder='big'))
except:
return make_response(jsonify({'response': "Value Error"}))
return make_response(jsonify({'response': str(tmp)}), 200)
def post(self, request, *args, **kwargs):
'''POST method redirects to valid URL'''
search = request.POST.get('search-input')
if not search:
raise Http404('Invalid search argument')
if w3.isAddress(search):
return redirect(reverse('address_info', args=[search]))
if all(k.isdigit() for k in search):
return redirect(reverse('block_info', args=[search]))
if search.isalnum():
if models.BlockStructureDB.objects.filter(
block_hash=search).exists():
return redirect(reverse('block_info', args=[search]))
elif models.TransactionDB.objects.filter(tx_hash=search).exists():
return redirect(reverse('transaction_info', args=[search]))
else:
raise Http404('Invalid search argument')
def check_address(address):
return w3.isAddress(address)
def convert(self, value, param, ctx):
if w3.isAddress(value):
return value
else:
self.fail(f'Wrong Ethereum address provided: {value}', param, ctx)
localPassword = "******"
ownerAddress = ""
localAccount = ""
if (os.path.exists('auth-a.json') == False):
authenticationSet = {}
#generate keys
localAccount = w3.eth.account.create('seed')
accountDump = w3.eth.account.encrypt(localAccount.privateKey,
localPassword)
authenticationSet['keystore'] = accountDump
ownerAddress = input("Insert the owner address\r\n")
while (w3.isAddress(ownerAddress) == False):
ownerAddress = input("Address not valid. Insert the owner address\r\n")
authenticationSet['ownerAddress'] = ownerAddress
with open('auth-a.json', 'w') as f:
json.dump(authenticationSet, f)
else:
with open('auth-a.json', 'r') as f:
datastore = json.load(f)
privateKey = w3.eth.account.decrypt(datastore['keystore'], localPassword)
localAccount = w3.eth.account.privateKeyToAccount(privateKey)
ownerAddress = datastore['ownerAddress']
print(localAccount.address)
rules = load_rules(ownerAddress)
while (True):
try:
### DEBUG
# enclave private = "0x564a9db84969c8159f7aa3d5393c5ecd014fce6a375842a45b12af6677b12407"
# enclave address = 0x3cB738D98D7A70e81e81B0811Fae2452BcA049Bc
# digest = w3.soliditySha3([ 'string' ], [ 'iExec the wanderer' ]).hex()
if __name__ == '__main__':
taskid = os.environ.get(
'TASKID'
) # or '0x8b43265c231bd32d1b249c1ce58bf0c77a9ebc6a30da37e961063a073a921e06'
worker = os.environ.get(
'WORKER') # or '0x748e091bf16048cb5103E0E10F9D5a8b7fBDd860'
keyfile = os.environ.get('KEYFILE') or '/app/priv_key'
if not taskid: raise ValueError('Missing TASKID')
if not w3.isAddress(worker): raise ValueError('Invalid worker address')
worker = w3.toChecksumAddress(worker)
print("Genrating result and consensus.iexec in /iexec ...")
shutil.copy("/app/result.txt", "/iexec/result.txt")
shutil.copy("/app/result.txt", "/iexec/consensus.iexec")
with open(keyfile) as f:
private = f.read().splitlines()[0]
digest = "0x" + fileChecksum("/iexec/consensus.iexec",
"sha256") # hexstring
hash = w3.soliditySha3(['bytes32', 'bytes32'], [taskid, digest])
seal = w3.soliditySha3(['address', 'bytes32', 'bytes32'],
[worker, taskid, digest])
def clean_address(self):
'''Validate an address before saving'''
if not w3.isAddress(self.address):
raise ValidationError(
'{} is not a valid Ethereum address'.format(self.address)
)
def validate_address(addr):
'''Validate Ethereum address'''
if not w3.isAddress(addr):
raise ValidationError(
'{} is not a valid Ethereum address'.format(addr)
)
decimals = underlying.decimals()
reserve = swap.balances(i) / 1e18 * coin.exchangeRateCurrent() / 10 ** decimals
return cls(coin=coin, underlying=underlying, decimals=decimals, reserve=reserve)
coins = [Coin.from_index(i) for i in range(2)]
print('Currency reserves:')
for coin in coins:
print(f'{coin.underlying.symbol()}: {coin.reserve:,.2f}')
fee = swap.fee() / 1e10
admin_fee = swap.admin_fee() / 1e10
print(f'Fee: {fee:.3%}')
print(f'Admin fee: {admin_fee:.3%}')
print(f'Virtual price: {swap.get_virtual_price() / 1e18}')
# show LP stats if address is provided
if len(sys.argv) > 1:
me = sys.argv[1]
me = w3.toChecksumAddress(me) if w3.isAddress(me) else me
print('\nMy share:')
token_balance = token.balanceOf(me) / 1e18
token_supply = token.totalSupply() / 1e18
share = token_balance / token_supply
print(f'{token.symbol()}: {token_balance:,.2f}')
for coin in coins:
print(f'{coin.underlying.symbol()}: {coin.reserve * share:,.2f}')
