def verify_settle(guid, transactions):
settle_guid = decode_single(
"uint256", w3.toBytes(hexstr=transactions[0]["data"][10:]))
transaction_count = len(transactions)
return transaction_count == 1 and check_int_uuid(
settle_guid) and check_uuid(guid) and str(
UUID(int=settle_guid, version=4)) == guid
def submit_request(account, sub=0, aud=0, exp=0, nbf=0, iat=0, wait=False):
log.out.debug("submit_request: \"Using contract at {}\"".format(
authority_contract.address))
# setting header
alg = w3.toBytes(text="RS256")
typ = w3.toBytes(text="JWT")
aud = w3.toBytes(text=aud)
# hashing request id
try:
request_id_bytes = w3.soliditySha3(['address', 'bytes32'],
[account, aud])
except web3.exceptions.InvalidAddress as e:
log.out.warning(
"\033[91mPlease make sure your address has a valid EIP cheksum. Test on etherscan.io and correct in ressources/user_info.json\033[0m"
)
exit()
# casting those filthy bytes to an human-readable hexstr
request_id = w3.toHex(request_id_bytes)
request_id = request_id[0:20]
# Proof that this works
#log.out.debug(w3.toBytes(hexstr=request_id))
#log.out.debug(request_id_bytes)
# submit to blockchain
txn_hash = authority_contract.functions.addPermissionRequest(
request_id, alg, typ, aud).transact({'from': account})
# wait for tx_receipt, could be disabled
if (wait):
timer = 50
tx_receipt = None
log.out.info(
"Transaction sent, waiting for mining: max. {} seconds".format(
timer))
while (tx_receipt is None and timer > 0):
tx_receipt = w3.eth.getTransactionReceipt(txn_hash)
time.sleep(1)
timer -= 1
if tx_receipt is not None:
log.out.info(
"\033[92mTransaction with request id {} mined!\033[0m".format(
request_id))
return request_id
def verify_stake(amount, transactions):
transaction_count = len(transactions)
# We should add in address validation later
(address,
approved) = decode_single("(address,uint256)",
bytes.fromhex(transactions[0]["data"][10:]))
stake = decode_single("uint256",
w3.toBytes(hexstr=transactions[1]["data"][10:]))
return transaction_count == 2 and check_address(address) and int(
stake) == int(amount) and int(approved) == int(amount)
def verify_vote(guid, verdicts, transactions):
(vote_guid, vote_verdicts, validBloom) = decode_single(
"(uint256,uint256,bool)",
w3.toBytes(hexstr=transactions[0]["data"][10:]))
verdicts_int = sum([1 << n if b else 0 for n, b in enumerate(verdicts)])
transaction_count = len(transactions)
return transaction_count == 1 and check_int_uuid(vote_guid) and check_uuid(
guid) and str(
UUID(int=vote_guid,
version=4)) == guid and verdicts_int == vote_verdicts
def request_token(account, request_id):
log.out.debug("submit_request: \"Using contract at {}\"".format(
authority_contract.address))
log.out.debug("submit_request: \"Using request_id {}".format(request_id))
# watch submit request
request_id_bytes = w3.toBytes(hexstr=request_id)
# Call contract
alg, typ, iss, sub, aud, iat, nbf, exp, jti, auth_token = authority_contract.functions.permissionList(
request_id_bytes).call({'from': account})
# Sorry, web3 don't remove the padding so doing it manually
typ = typ.split(b'\0', 1)[0]
alg = alg.split(b'\0', 1)[0]
aud = aud.split(b'\0', 1)[0]
auth_token = auth_token.split(b'\0', 1)[0]
#### Byte-String to text
typ = w3.toText(typ)
alg = w3.toText(alg)
aud = w3.toText(aud)
auth_token = w3.toText(auth_token)
token_dict = {
"header": {
"typ": typ,
"alg": alg
},
"payload": {
"iss": iss,
"sub": sub,
"aud": aud,
"exp": exp,
"nbf": nbf,
"iat": iat,
"jti": jti,
},
"token": auth_token
}
#token_json = json.dumps(token_dict)
log.out.debug("Token in dict-format: {}".format(token_dict))
return token_dict
def store_token(account, request_id, auth_token, exp, nbf, iat, wait=False):
token_bytes = w3.toBytes(text=auth_token)
exp = int(exp)
nbf = int(nbf)
iat = int(iat)
txn_hash = authority_contract.functions.storeToken(
request_id, token_bytes, exp, nbf, iat).transact({'from': account})
if (wait):
timer = 50
tx_receipt = None
log.out.info(
"Transaction sent, waiting for mining: max. {} seconds".format(
timer))
while (tx_receipt is None and timer > 0):
tx_receipt = w3.eth.getTransactionReceipt(txn_hash)
time.sleep(1)
timer -= 1
if tx_receipt is not None:
log.out.info(
"\033[92mToken with request id {} mined!\033[0m".format(
request_id))
def to_32byte_hex(val):
return web3.toHex(web3.toBytes(val).rjust(32, b'\0'))
def bytes32_to_ipfs(bytes_array):
"""Convert bytes_array into IPFS hash format."""
merge = w3.toBytes(hexstr='1220') + bytes_array
return base58.b58encode(merge).decode("utf-8")
def ipfs_to_bytes32(ipfs_hash: str) -> str:
"""bytes32 is converted back into Ipfs hash format."""
ipfs_hash_bytes32 = _ipfs_to_bytes32(ipfs_hash)
return w3.toBytes(hexstr=ipfs_hash_bytes32)
