def ecrecover(msg, signature, address=None):
"""
Returns None on failure, returns the recovered address on success.
If address is provided: Returns True if the recovered address matches it,
otherwise False.
"""
rawhash = sha3(msg)
if len(signature) >= 65:
v = safe_ord(signature[64]) + 27
r = big_endian_to_int(signature[0:32])
s = big_endian_to_int(signature[32:64])
else:
if address:
return False
else:
return None
pk = PublicKey(flags=ALL_FLAGS)
pk.public_key = pk.ecdsa_recover(
rawhash,
pk.ecdsa_recoverable_deserialize(
zpad(bytearray_to_bytestr(int_to_32bytearray(r)), 32) +
zpad(bytearray_to_bytestr(int_to_32bytearray(s)), 32), v - 27),
raw=True)
pub = pk.serialize(compressed=False)
recaddr = data_encoder(sha3(pub[1:])[-20:])
if address:
if not address.startswith("0x"):
recaddr = recaddr[2:]
return recaddr == address
return recaddr
def test():
t.gas_price = 0
s = t.state()
c = s.abi_contract("randao.se")
votes = []
ids = []
xor = 0
for i in range(5):
r = random.randrange(2 ** 256)
xor ^= r
votes.append(utils.zpad(utils.encode_int(r), 32))
f = c.getFee()
for i in range(5):
ids.append(c.submitHash(utils.sha3(votes[i]), value=f))
while c.getPhase() == 0:
s.mine(10)
for i in range(5):
c.submitValue(ids[i], votes[i])
while c.getPhase() == 1:
s.mine(10)
c.claimResults()
assert c.getNextResultPos() == 1
assert c.getResult(0) == utils.zpad(utils.encode_int(xor), 32), (
c.getResult(0),
utils.zpad(utils.encode_int(xor), 32),
)
def recover_sender(self):
if self.v:
if self.r >= N or self.s >= P or self.v < 27 or self.v > 28 \
or self.r == 0 or self.s == 0:
raise InvalidSignature()
rlpdata = rlp.encode(self, self.__class__.exclude(['v', 'r', 's']))
rawhash = sha3(rlpdata)
pk = PublicKey(flags=ALL_FLAGS)
try:
pk.public_key = pk.ecdsa_recover(
rawhash,
pk.ecdsa_recoverable_deserialize(
zpad(
"".join(
chr(c)
for c in int_to_32bytearray(self.r)), 32) +
zpad(
"".join(
chr(c)
for c in int_to_32bytearray(self.s)), 32),
self.v - 27),
raw=True)
pub = pk.serialize(compressed=False)
except Exception:
raise InvalidSignature()
if pub[1:] == "\x00" * 32:
raise InvalidSignature()
pub = encode_pubkey(pub, 'bin')
return sha3(pub[1:])[-20:]
def test():
t.gas_price = 0
s = t.state()
c = s.abi_contract('randao.se')
votes = []
ids = []
xor = 0
for i in range(5):
r = random.randrange(2**256)
xor ^= r
votes.append(utils.zpad(utils.encode_int(r), 32))
f = c.getFee()
for i in range(5):
ids.append(c.submitHash(utils.sha3(votes[i]), value=f))
while c.getPhase() == 0:
s.mine(10)
for i in range(5):
c.submitValue(ids[i], votes[i])
while c.getPhase() == 1:
s.mine(10)
c.claimResults()
assert c.getNextResultPos() == 1
assert c.getResult(0) == utils.zpad(
utils.encode_int(xor),
32), (c.getResult(0), utils.zpad(utils.encode_int(xor), 32))
def test_transaction(filename, testname, testdata):
testdata = fixture_to_bytes(testdata)
try:
rlpdata = decode_hex(testdata["rlp"][2:])
o = {}
tx = rlp.decode(rlpdata, transactions.Transaction)
blknum = int(testdata["blocknumber"])
if blknum >= config.default_config["HOMESTEAD_FORK_BLKNUM"]:
tx.check_low_s()
o["sender"] = tx.sender
o["transaction"] = {
"data": b'0x' * (len(tx.data) > 0) + encode_hex(tx.data),
"gasLimit": str_to_bytes(str(tx.startgas)),
"gasPrice": str_to_bytes(str(tx.gasprice)),
"nonce": str_to_bytes(str(tx.nonce)),
"r":
b'0x' + encode_hex(utils.zpad(utils.int_to_big_endian(tx.r), 32)),
"s":
b'0x' + encode_hex(utils.zpad(utils.int_to_big_endian(tx.s), 32)),
"v": str_to_bytes(str(tx.v)),
"value": str_to_bytes(str(tx.value)),
"to": encode_hex(tx.to),
}
except Exception as e:
tx = None
sys.stderr.write(str(e))
if 'transaction' not in testdata: # expected to fail
assert tx is None
else:
assert set(o['transaction'].keys()) == set(
testdata.get("transaction", dict()).keys())
o.get("transaction", None) == testdata.get("transaction", None)
assert encode_hex(o.get("sender", '')) == testdata.get("sender", '')
def test_transaction(filename, testname, testdata):
testdata = fixture_to_bytes(testdata)
try:
rlpdata = decode_hex(testdata["rlp"][2:])
o = {}
tx = rlp.decode(rlpdata, transactions.Transaction)
blknum = int(testdata["blocknumber"])
if blknum >= config.default_config["HOMESTEAD_FORK_BLKNUM"]:
tx.check_low_s()
o["sender"] = tx.sender
o["transaction"] = {
"data": b'0x' * (len(tx.data) > 0) + encode_hex(tx.data),
"gasLimit": str_to_bytes(str(tx.startgas)),
"gasPrice": str_to_bytes(str(tx.gasprice)),
"nonce": str_to_bytes(str(tx.nonce)),
"r": b'0x' + encode_hex(utils.zpad(utils.int_to_big_endian(tx.r), 32)),
"s": b'0x' + encode_hex(utils.zpad(utils.int_to_big_endian(tx.s), 32)),
"v": str_to_bytes(str(tx.v)),
"value": str_to_bytes(str(tx.value)),
"to": encode_hex(tx.to),
}
except Exception as e:
tx = None
sys.stderr.write(str(e))
if 'transaction' not in testdata: # expected to fail
assert tx is None
else:
assert set(o['transaction'].keys()) == set(testdata.get("transaction", dict()).keys())
o.get("transaction", None) == testdata.get("transaction", None)
assert encode_hex(o.get("sender", '')) == testdata.get("sender", '')
def test():
t.gas_price = 0
s = t.state()
c = s.abi_contract('gamble.se')
rseed = os.urandom(32)
seed1 = utils.sha3(rseed)
c.set_curseed(seed1)
s.block.set_balance(c.address, 27000)
totbal = sum([s.block.get_balance(x) for x in t.accounts])
# 90 bets succeed (bet with 25% winning probability)
for i in range(90):
assert c.bet(utils.zpad(str(i), 32), 250, sender=t.keys[i % 10], value=100) >= 0
# 10 bets fail due to not enough collateral
for i in range(90, 100):
assert c.bet(utils.zpad(str(i), 32), 250, sender=t.keys[i % 10], value=100) == -2
# Add more collateral
s.block.delta_balance(c.address, 3000)
# 10 bets succeed
for i in range(90, 100):
assert c.bet(utils.zpad(str(i), 32), 250, sender=t.keys[i % 10], value=100) >= 0
# 10 bets fail due to limit of 100
for i in range(100, 110):
assert c.bet(utils.zpad(str(i), 32), 250, sender=t.keys[i % 10], value=100) == -1
mid_totbal = sum([s.block.get_balance(x) for x in t.accounts])
assert c.set_curseed(rseed, os.urandom(32))
# Check that a reasonable number of bets succeeded
new_totbal = sum([s.block.get_balance(x) for x in t.accounts])
print 'Profit: ', totbal - new_totbal
assert -4000 < (new_totbal - totbal) < 7000
assert 26000 < s.block.get_balance(c.address) < 37000
def _db_decode_type(cls, value_type, data):
if value_type in ('string', 'bytes', 'binary'):
return int_to_big_endian(data)
if value_type == 'address':
return zpad(int_to_big_endian(data), 20)
return abi.decode_abi([value_type], zpad(int_to_big_endian(data),
32))[0]
def run_test(filename, testname, testdata):
testdata = fixture_to_bytes(testdata)
try:
rlpdata = decode_hex(testdata["rlp"][2:])
print rlpdata.encode('hex')
o = {}
tx = rlp.decode(rlpdata, transactions.Transaction)
o["sender"] = tx.sender
o["transaction"] = {
"data": b'0x' * (len(tx.data) > 0) + encode_hex(tx.data),
"gasLimit": str_to_bytes(str(tx.startgas)),
"gasPrice": str_to_bytes(str(tx.gasprice)),
"nonce": str_to_bytes(str(tx.nonce)),
"r":
b'0x' + encode_hex(utils.zpad(utils.int_to_big_endian(tx.r), 32)),
"s":
b'0x' + encode_hex(utils.zpad(utils.int_to_big_endian(tx.s), 32)),
"v": str_to_bytes(str(tx.v)),
"value": str_to_bytes(str(tx.value)),
"to": encode_hex(tx.to),
}
except:
tx = None
if 'transaction' not in testdata: # expected to fail
assert tx is None
else:
assert set(o['transaction'].keys()) == set(
testdata.get("transaction", dict()).keys())
o.get("transaction", None) == testdata.get("transaction", None)
assert encode_hex(o.get("sender", '')) == testdata.get("sender", '')
def run_test(filename, testname, testdata):
testdata = fixture_to_bytes(testdata)
try:
rlpdata = decode_hex(testdata["rlp"][2:])
print rlpdata.encode("hex")
o = {}
tx = rlp.decode(rlpdata, transactions.Transaction)
o["sender"] = tx.sender
o["transaction"] = {
"data": b"0x" * (len(tx.data) > 0) + encode_hex(tx.data),
"gasLimit": str_to_bytes(str(tx.startgas)),
"gasPrice": str_to_bytes(str(tx.gasprice)),
"nonce": str_to_bytes(str(tx.nonce)),
"r": b"0x" + encode_hex(utils.zpad(utils.int_to_big_endian(tx.r), 32)),
"s": b"0x" + encode_hex(utils.zpad(utils.int_to_big_endian(tx.s), 32)),
"v": str_to_bytes(str(tx.v)),
"value": str_to_bytes(str(tx.value)),
"to": encode_hex(tx.to),
}
except:
tx = None
if "transaction" not in testdata: # expected to fail
assert tx is None
else:
assert set(o["transaction"].keys()) == set(testdata.get("transaction", dict()).keys())
o.get("transaction", None) == testdata.get("transaction", None)
assert encode_hex(o.get("sender", "")) == testdata.get("sender", "")
def test_get_logs(self):
addr = '0x' + zpad('deadbeef', 32).encode('hex')
log_id = '0x' + zpad('beefbeef', 32).encode('hex')
client = self.client
logs = client.get_logs(from_block='latest',
to_block='latest',
topics=[log_id, addr])
assert logs == []
def sign_block(block, key, randao_parent, vchash, skips):
block.header.extra_data = \
randao_parent + \
utils.zpad(utils.encode_int(skips), 32) + \
vchash
for val in utils.ecsign(block.header.signing_hash, key):
block.header.extra_data += utils.zpad(utils.encode_int(val), 32)
return block
def test_encode_bool():
bool_ = ('bool', '', [])
uint8 = ('uint', '8', [])
assert encode_single(bool_, True) == zpad(b'\x01', 32)
assert encode_single(bool_, False) == zpad(b'\x00', 32)
assert encode_single(bool_, True) == encode_single(uint8, 1)
assert encode_single(bool_, False) == encode_single(uint8, 0)
def sign(self, payload):
rawhash = keccak256(payload)
v, r, s = ecsign(rawhash, self.key)
signature = \
zpad(bytearray_to_bytestr(int_to_32bytearray(r)), 32) + \
zpad(bytearray_to_bytestr(int_to_32bytearray(s)), 32) + \
bytearray_to_bytestr([v])
return signature
def run(self, sender=None, to=None, code=None, gas=None):
sender = normalize_address(sender) if sender else normalize_address(zpad('sender', 20))
to = normalize_address(to) if to else normalize_address(zpad('receiver', 20))
code = scan_bin(code) if code else ''
gas = scan_int(gas) if gas else 10000000000000
msg = vm.Message(sender, to, gas=gas)
ext = VMExt(self.state, Transaction(0, 0, 21000, b'', 0, b''))
result, gas_remained, data = _apply_msg(ext, msg, code)
return bytearray_to_bytestr(data) if result else None
def test_abi_encode_single_int():
assert abi.encode_single(['int', '256', []], -2**255) == (b'\x80'+b'\x00'*31)
assert abi.encode_single(['int', '256', []], (b'\x80'+b'\x00'*31)) == (b'\x80'+b'\x00'*31)
assert abi.encode_single(['int', '8', []], -128) == zpad(b'\x80', 32)
with pytest.raises(abi.ValueOutOfBounds):
assert abi.encode_single(['int', '8', []], -129)
assert abi.encode_single(['int', '8', []], 127) == zpad(b'\x7f', 32)
with pytest.raises(abi.ValueOutOfBounds):
assert abi.encode_single(['int', '8', []], 128)
def test():
t.gas_price = 0
s = t.state()
c = s.abi_contract('gamble.se')
rseed = os.urandom(32)
seed1 = utils.sha3(rseed)
c.set_curseed(seed1)
s.block.set_balance(c.address, 27000)
totbal = sum([s.block.get_balance(x) for x in t.accounts])
assert c.get_fee_millis() == 0
# 90 bets succeed (bet with 25% winning probability)
for i in range(90):
assert c.bet(
utils.zpad(str(i), 32), 250, sender=t.keys[i % 10], value=100) >= 0
# 10 bets fail due to not enough collateral
for i in range(90, 100):
assert c.bet(utils.zpad(str(i), 32),
250,
sender=t.keys[i % 10],
value=100) == -2
# Add more collateral
s.block.delta_balance(c.address, 3000)
# 10 bets succeed
for i in range(90, 100):
assert c.bet(
utils.zpad(str(i), 32), 250, sender=t.keys[i % 10], value=100) >= 0
# 10 bets fail due to limit of 100
for i in range(100, 110):
assert c.bet(utils.zpad(str(i), 32),
250,
sender=t.keys[i % 10],
value=100) == -1
mid_totbal = sum([s.block.get_balance(x) for x in t.accounts])
assert c.get_administration_status() == -1
c.unlock_for_administration()
assert c.get_administration_status() == 5
s.block.coinbase = '\x35' * 20
s.mine(5, coinbase='\x35' * 20)
s.block.set_balance('\x35' * 20, 0)
assert c.get_administration_status() == 0
assert c.set_curseed(rseed, os.urandom(32))
assert c.get_administration_status() == -1
# Check that a reasonable number of bets succeeded
new_totbal = sum([s.block.get_balance(x) for x in t.accounts])
print 'Profit: ', totbal - new_totbal
assert -4000 < (new_totbal - totbal) < 7000
assert 26000 < s.block.get_balance(c.address) < 37000
assert not c.withdraw(20000)
c.unlock_for_administration()
s.mine(5)
assert c.withdraw(20000)
assert not c.withdraw(20000)
def personal_sign(private_key, message):
if isinstance(private_key, str):
private_key = data_decoder(private_key)
rawhash = sha3("\x19Ethereum Signed Message:\n{}{}".format(len(message), message))
v, r, s = ecsign(rawhash, private_key)
signature = zpad(bytearray_to_bytestr(int_to_32bytearray(r)), 32) + \
zpad(bytearray_to_bytestr(int_to_32bytearray(s)), 32) + \
bytearray_to_bytestr([v])
return data_encoder(signature)
def sign_payload(private_key, payload):
if isinstance(private_key, str):
private_key = data_decoder(private_key)
rawhash = sha3(payload)
v, r, s = ecsign(rawhash, private_key)
signature = zpad(bytearray_to_bytestr(int_to_32bytearray(r)), 32) + \
zpad(bytearray_to_bytestr(int_to_32bytearray(s)), 32) + \
bytearray_to_bytestr([v])
return data_encoder(signature)
def _encode_function(self, signature, param_values):
signature = signature.replace(' ', '')
prefix = utils.big_endian_to_int(utils.sha3(signature)[:4])
if signature.find('(') == -1:
raise RuntimeError('Invalid function signature. Missing "(" and/or ")"...')
if signature.find(')') - signature.find('(') == 1:
return utils.zpad(utils.encode_int(prefix), 4)))
types = signature[signature.find('(') + 1: signature.find(')')].split(',')
encoded_params = encode_abi(types, param_values)
return utils.zpad(utils.encode_int(prefix), 4) + encoded_params
def mine(block_number, difficulty, mining_hash, start_nonce=0, rounds=1000):
assert isinstance(start_nonce, (int, long))
cache = get_cache(block_number)
nonce = start_nonce
target = utils.zpad(utils.int_to_big_endian(2**256 // (difficulty or 1)), 32)
for i in range(1, rounds + 1):
bin_nonce = utils.zpad(utils.int_to_big_endian((nonce + i) & TT64M1), 8)
o = hashimoto_light(block_number, cache, mining_hash, bin_nonce)
if o["result"] <= target:
log.debug("nonce found")
assert len(bin_nonce) == 8
assert len(o["mix digest"]) == 32
return bin_nonce, o["mix digest"]
return None, None
def get_state_variable_from_storage(self, address, params=[]):
(position, length, mappings) = (0, 1, [])
try:
if params[0] == "mapping":
if len(params) < 3:
raise CriticalError("Invalid number of parameters.")
position = int(params[1])
position_formatted = utils.zpad(utils.int_to_big_endian(position), 32)
for i in range(2, len(params)):
key = bytes(params[i], 'utf8')
key_formatted = utils.rzpad(key, 32)
mappings.append(int.from_bytes(utils.sha3(key_formatted + position_formatted), byteorder='big'))
length = len(mappings)
if length == 1:
position = mappings[0]
else:
if len(params) >= 4:
raise CriticalError("Invalid number of parameters.")
if len(params) >= 1:
position = int(params[0])
if len(params) >= 2:
length = int(params[1])
if len(params) == 3 and params[2] == "array":
position_formatted = utils.zpad(utils.int_to_big_endian(position), 32)
position = int.from_bytes(utils.sha3(position_formatted), byteorder='big')
except ValueError:
raise CriticalError("Invalid storage index. Please provide a numeric value.")
outtxt = []
try:
if length == 1:
outtxt.append("{}: {}".format(position, self.eth.eth_getStorageAt(address, position)))
else:
if len(mappings) > 0:
for i in range(0, len(mappings)):
position = mappings[i]
outtxt.append("{}: {}".format(hex(position), self.eth.eth_getStorageAt(address, position)))
else:
for i in range(position, position + length):
outtxt.append("{}: {}".format(hex(i), self.eth.eth_getStorageAt(address, i)))
except FileNotFoundError as e:
raise CriticalError("IPC error: " + str(e))
except ConnectionError as e:
raise CriticalError("Could not connect to RPC server. Make sure that your node is running and that RPC parameters are set correctly.")
return '\n'.join(outtxt)
def test_abi_encode_single_int():
assert abi.encode_single(['int', '256', []],
-2**255) == (b'\x80' + b'\x00' * 31)
assert abi.encode_single(['int', '256', []],
(b'\x80' + b'\x00' * 31)) == (b'\x80' +
b'\x00' * 31)
assert abi.encode_single(['int', '8', []], -128) == zpad(b'\x80', 32)
with pytest.raises(abi.ValueOutOfBounds):
assert abi.encode_single(['int', '8', []], -129)
assert abi.encode_single(['int', '8', []], 127) == zpad(b'\x7f', 32)
with pytest.raises(abi.ValueOutOfBounds):
assert abi.encode_single(['int', '8', []], 128)
def tester_state(deploy_key, private_keys, tester_blockgas_limit):
tester_state = tester.state()
# special addresses 1 to 5
alloc = {
int_to_addr(i): {'wei': 1}
for i in range(1, 5)
}
for privkey in [deploy_key] + private_keys:
address = privatekey_to_address(privkey)
alloc[address] = {
'balance': DEFAULT_BALANCE,
}
for account in tester.accounts:
alloc[account] = {
'balance': DEFAULT_BALANCE,
}
db = ethereum.db.EphemDB()
env = ethereum.config.Env(
db,
ethereum.config.default_config,
)
genesis_overwrite = {
'nonce': zpad(data_decoder('0x00006d6f7264656e'), 8),
'difficulty': quantity_decoder('0x20000'),
'mixhash': zpad(b'\x00', 32),
'coinbase': address_decoder('0x0000000000000000000000000000000000000000'),
'timestamp': 0,
'extra_data': b'',
'gas_limit': tester_blockgas_limit,
'start_alloc': alloc,
}
genesis_block = ethereum.blocks.genesis(
env,
**genesis_overwrite
)
# enable DELEGATECALL opcode
genesis_block.number = genesis_block.config['HOMESTEAD_FORK_BLKNUM'] + 1
tester_state.db = db
tester_state.env = env
tester_state.block = genesis_block
tester_state.blocks = [genesis_block]
return tester_state
def tester_state(deploy_key, private_keys, tester_blockgas_limit):
tester_state = tester.state()
# special addresses 1 to 5
alloc = {
int_to_addr(i): {'wei': 1}
for i in range(1, 5)
}
for privkey in [deploy_key] + private_keys:
address = privatekey_to_address(privkey)
alloc[address] = {
'balance': DEFAULT_BALANCE,
}
for account in tester.accounts:
alloc[account] = {
'balance': DEFAULT_BALANCE,
}
db = ethereum.db.EphemDB()
env = ethereum.config.Env(
db,
ethereum.config.default_config,
)
genesis_overwrite = {
'nonce': zpad(data_decoder('0x00006d6f7264656e'), 8),
'difficulty': quantity_decoder('0x20000'),
'mixhash': zpad(b'\x00', 32),
'coinbase': address_decoder('0x0000000000000000000000000000000000000000'),
'timestamp': 0,
'extra_data': b'',
'gas_limit': tester_blockgas_limit,
'start_alloc': alloc,
}
genesis_block = ethereum.blocks.genesis(
env,
**genesis_overwrite
)
# enable DELEGATECALL opcode
genesis_block.number = genesis_block.config['HOMESTEAD_FORK_BLKNUM'] + 1
tester_state.db = db
tester_state.env = env
tester_state.block = genesis_block
tester_state.blocks = [genesis_block]
return tester_state
def encode_function_call(self, function_name, args):
if function_name not in self.function_data:
raise ValueError('Unkown function {}'.format(function_name))
description = self.function_data[function_name]
function_selector = zpad(encode_int(description['prefix']), 4)
arguments = encode_abi(description['encode_types'], args)
return function_selector + arguments
def hash_array(arr):
o = ''
for x in arr:
if isinstance(x, (int, long)):
x = utils.zpad(utils.encode_int(x), 32)
o += x
return utils.big_endian_to_int(utils.sha3(o))
def serialize_block(block, full_transactions):
if full_transactions:
transactions = [
serialize_txn(block, txn, txn_index)
for txn_index, txn in enumerate(block.transaction_list)
]
else:
transactions = [
encode_32bytes(txn.hash) for txn in block.transaction_list
]
unpadded_logs_bloom = int_to_big_endian(block.bloom)
logs_bloom = zpad(unpadded_logs_bloom, (256 - len(unpadded_logs_bloom)))
return {
"number": encode_number(block.number),
"hash": encode_32bytes(block.hash),
"parentHash": encode_32bytes(block.prevhash),
"nonce": encode_32bytes(block.nonce),
"sha3Uncles": encode_32bytes(block.uncles_hash),
# TODO logsBloom / padding
"logsBloom": logs_bloom,
"transactionsRoot": encode_32bytes(block.tx_list_root),
"stateRoot": encode_32bytes(block.state_root),
"miner": encode_address(block.coinbase),
"difficulty": encode_number(block.difficulty),
"totalDifficulty": encode_number(block.chain_difficulty()),
"size": encode_number(len(rlp.encode(block))),
"extraData": encode_32bytes(block.extra_data),
"gasLimit": encode_number(block.gas_limit),
"gasUsed": encode_number(block.gas_used),
"timestamp": encode_number(block.timestamp),
"transactions": transactions,
"uncles": block.uncles
}
def test_lottery_payer_deposit_owner(self):
self.deploy_contract(9)
payer = tester.a6
w0 = self.state.block.get_balance(payer)
lottery = Lottery({tester.a1: 11 * eth, tester.a2: 39 * eth})
g1 = self.lottery_init(6, lottery)
v = 50 * eth
deposit = v / 10
assert self.lottery_get_value(lottery) == v
assert self.lottery_get_maturity(lottery) == 10
b = self.state.block.get_balance(payer) - w0
assert b == -(v + deposit + g1)
self.state.mine(256 + 11)
expected_rand = self.state.block.get_parent().hash[-4:]
# Owner gets the deposit
self.lottery_randomise(8, lottery)
r = self.lottery_get_rand(lottery)
r = zpad(int_to_big_endian(r), 4)
assert r == expected_rand
assert b == -(v + deposit + g1)
assert self.lottery_get_owner_deposit() == deposit
b0 = self.state.block.get_balance(tester.a9)
self.lottery_owner_payout()
b = self.state.block.get_balance(tester.a9) - b0
assert b == deposit
assert self.lottery_get_owner_deposit() == 0
def mine(block_number, difficulty, mining_hash, start_nonce=0, rounds=1000):
assert utils.is_numeric(start_nonce)
cache = get_cache(block_number)
nonce = start_nonce
target = utils.zpad(
utils.int_to_big_endian(2**256 // (difficulty or 1) - 1), 32)
for i in range(1, rounds + 1):
bin_nonce = utils.zpad(utils.int_to_big_endian((nonce + i) & TT64M1),
8)
o = hashimoto_light(block_number, cache, mining_hash, bin_nonce)
if o[b'result'] <= target:
log.debug('nonce found: {}'.format(bin_nonce))
assert len(bin_nonce) == 8
assert len(o[b'mix digest']) == 32
return bin_nonce, o[b'mix digest']
return None, None
def commit_state(self):
"""Commit account caches"""
"""Write the acount caches on the corresponding tries."""
changes = []
if len(self.journal) == 0:
# log_state.trace('delta', changes=[])
return
addresses = sorted(list(self.caches['all'].keys()))
for addr in addresses:
acct = self._get_acct(addr)
# storage
for field in ('balance', 'nonce', 'code', 'storage'):
if addr in self.caches[field]:
v = self.caches[field][addr]
changes.append([field, addr, v])
setattr(acct, field, v)
t = SecureTrie(Trie(self.db, acct.storage))
for k, v in self.caches.get(b'storage:' + addr, {}).items():
enckey = utils.zpad(utils.coerce_to_bytes(k), 32)
val = rlp.encode(v)
changes.append(['storage', addr, k, v])
if v:
t.update(enckey, val)
else:
t.delete(enckey)
acct.storage = t.root_hash
self.state.update(addr, rlp.encode(acct))
log_state.trace('delta', changes=changes)
self.reset_cache()
self.db.put(b'validated:' + self.hash, '1')
def test_lottery_payer_deposit_owner(self):
self.deploy_contract(9)
payer = tester.a6
w0 = self.state.block.get_balance(payer)
lottery = Lottery({tester.a1: 11 * eth, tester.a2: 39 * eth})
g1 = self.lottery_init(6, lottery)
v = 50 * eth
deposit = v / 10
assert self.lottery_get_value(lottery) == v
assert self.lottery_get_maturity(lottery) == 10
b = self.state.block.get_balance(payer) - w0
assert b == -(v + deposit + g1)
self.state.mine(256 + 11)
expected_rand = self.state.block.get_parent().hash[-4:]
# Owner gets the deposit
self.lottery_randomise(8, lottery)
r = self.lottery_get_rand(lottery)
r = zpad(int_to_big_endian(r), 4)
assert r == expected_rand
assert b == -(v + deposit + g1)
assert self.lottery_get_owner_deposit() == deposit
b0 = self.state.block.get_balance(tester.a9)
self.lottery_owner_payout()
b = self.state.block.get_balance(tester.a9) - b0
assert b == deposit
assert self.lottery_get_owner_deposit() == 0
def encode_data(data, length=None):
"""Encode unformatted binary `data`.
If `length` is given, the result will be padded like this: ``quantity_encoder(255, 3) ==
'0x0000ff'``.
"""
return add_0x(encode_hex(zpad(data, length or 0)))
def load_state(env, alloc):
db = env.db
state = SecureTrie(Trie(db, BLANK_ROOT))
count = 0
print("Start loading state from snapshot")
for addr in alloc:
print("[%d] loading account %s" % (count, addr))
account = alloc[addr]
acct = Account.blank_account(db, env.config['ACCOUNT_INITIAL_NONCE'])
if len(account['storage']) > 0:
t = SecureTrie(Trie(db, BLANK_ROOT))
c = 0
for k in account['storage']:
v = account['storage'][k]
enckey = zpad(decode_hex(k), 32)
t.update(enckey, decode_hex(v))
c += 1
if c % 1000 and len(db.db_service.uncommitted) > 50000:
print("%d uncommitted. committing..." %
len(db.db_service.uncommitted))
db.commit()
acct.storage = t.root_hash
if account['nonce']:
acct.nonce = int(account['nonce'])
if account['balance']:
acct.balance = int(account['balance'])
if account['code']:
acct.code = decode_hex(account['code'])
state.update(decode_hex(addr), rlp.encode(acct))
count += 1
db.commit()
return state
def test_lottery_payer_deposit_sender(self):
self.deploy_contract()
payer = tester.a6
w0 = self.state.block.get_balance(payer)
lottery = Lottery({tester.a1: 11 * eth, tester.a2: 39 * eth})
g1 = self.lottery_init(6, lottery)
v = 50 * eth
deposit = v / 10
assert self.lottery_get_value(lottery) == v
assert self.lottery_get_maturity(lottery) == 10
b = self.state.block.get_balance(payer) - w0
assert b == -(v + deposit + g1)
self.state.mine(11)
expected_rand = self.state.block.get_parent().hash[-4:]
self.state.mine(255)
s0 = self.state.block.get_balance(tester.a8)
# Sender gets the deposit
g2 = self.lottery_randomise(8, lottery, deposit)
assert g2 > 0 and g2 <= 32000
r = self.lottery_get_rand(lottery)
r = zpad(int_to_big_endian(r), 4)
assert r == expected_rand
b = self.state.block.get_balance(payer) - w0
assert b == -(v + deposit + g1)
s = self.state.block.get_balance(tester.a8) - s0
assert s == deposit - g2
def mine(self, start_nonce=0):
cache = get_cache(self._block_number_int)
nonce = start_nonce
i = 0
difficulty = int(bin_to_hex_b(self._target_bin)[2:], 16)
print('Difficulty: ', difficulty)
print('Block Number: ', self._block_number_int)
cnt = 0
start = time.time()
while True:
i += 1
cnt += 1
bin_nonce = utils.zpad(utils.int_to_big_endian((nonce + i)), 8)
k = sha3.keccak_256()
k.update(self._mining_hash_bin)
k.update(bin_nonce)
hash1 = int(k.hexdigest(), 16)
# o = hashimoto_light(self._block_number_int, cache, self._mining_hash_bin, bin_nonce)
if hash1 <= difficulty:
end = time.time()
self._nonce_bin = bin_nonce
print('Hashes Done: ', cnt)
# for x in self._mining_hash_bin:
# print(x)
# for x in bin_nonce:
# print(x)
# print('Nonce: ', bin_nonce, len( bin_nonce))
print('Block Mining Time: ', end - start)
return
def encode_data(data, length=None):
"""Encode unformatted binary `data`.
If `length` is given, the result will be padded like this: ``quantity_encoder(255, 3) ==
'0x0000ff'``.
"""
return add_0x(encode_hex(zpad(data, length or 0)))
def listen(self, log, noprint=False):
if not len(log.topics) or log.topics[0] not in self.event_data:
return
types = self.event_data[log.topics[0]]['types']
name = self.event_data[log.topics[0]]['name']
names = self.event_data[log.topics[0]]['names']
indexed = self.event_data[log.topics[0]]['indexed']
indexed_types = [types[i] for i in range(len(types))
if indexed[i]]
unindexed_types = [types[i] for i in range(len(types))
if not indexed[i]]
# print('listen', log.data.encode('hex'), log.topics)
deserialized_args = decode_abi(unindexed_types, log.data)
o = {}
c1, c2 = 0, 0
for i in range(len(names)):
if indexed[i]:
topic_bytes = utils.zpad(utils.encode_int(log.topics[c1 + 1]), 32)
o[names[i]] = decode_single(process_type(indexed_types[c1]),
topic_bytes)
c1 += 1
else:
o[names[i]] = deserialized_args[c2]
c2 += 1
o["_event_type"] = utils.to_string(name)
if not noprint:
print(o)
return o
def test_lottery_payer_deposit_sender(self):
self.deploy_contract()
payer = tester.a6
w0 = self.state.block.get_balance(payer)
lottery = Lottery({tester.a1: 11 * eth, tester.a2: 39 * eth})
g1 = self.lottery_init(6, lottery)
v = 50 * eth
deposit = v / 10
assert self.lottery_get_value(lottery) == v
assert self.lottery_get_maturity(lottery) == 10
b = self.state.block.get_balance(payer) - w0
assert b == -(v + deposit + g1)
self.state.mine(11)
expected_rand = self.state.block.get_parent().hash[-4:]
self.state.mine(255)
s0 = self.state.block.get_balance(tester.a8)
# Sender gets the deposit
g2 = self.lottery_randomise(8, lottery, deposit)
assert g2 > 0 and g2 <= 32000
r = self.lottery_get_rand(lottery)
r = zpad(int_to_big_endian(r), 4)
assert r == expected_rand
b = self.state.block.get_balance(payer) - w0
assert b == -(v + deposit + g1)
s = self.state.block.get_balance(tester.a8) - s0
assert s == deposit - g2
def sender(self):
if not self._sender:
# Determine sender
if self.v:
if self.r >= N or self.s >= N or self.v < 27 or self.v > 28 \
or self.r == 0 or self.s == 0:
raise InvalidTransaction("Invalid signature values!")
log.debug('recovering sender')
rlpdata = rlp.encode(self, UnsignedTransaction)
rawhash = utils.sha3(rlpdata)
pk = PublicKey(flags=ALL_FLAGS)
try:
pk.public_key = pk.ecdsa_recover(
rawhash,
pk.ecdsa_recoverable_deserialize(
zpad(utils.bytearray_to_bytestr(int_to_32bytearray(self.r)), 32) + zpad(utils.bytearray_to_bytestr(int_to_32bytearray(self.s)), 32),
self.v - 27
),
raw=True
)
pub = pk.serialize(compressed=False)
except Exception:
raise InvalidTransaction("Invalid signature values (x^3+7 is non-residue)")
if pub[1:] == b"\x00" * 32:
raise InvalidTransaction("Invalid signature (zero privkey cannot sign)")
pub = encode_pubkey(pub, 'bin')
self._sender = utils.sha3(pub[1:])[-20:]
assert self.sender == self._sender
else:
self._sender = 0
return self._sender
def listen(self, log, noprint=False):
if not len(log.topics) or log.topics[0] not in self.event_data:
return
types = self.event_data[log.topics[0]]['types']
name = self.event_data[log.topics[0]]['name']
names = self.event_data[log.topics[0]]['names']
indexed = self.event_data[log.topics[0]]['indexed']
indexed_types = [types[i] for i in range(len(types)) if indexed[i]]
unindexed_types = [
types[i] for i in range(len(types)) if not indexed[i]
]
# print('listen', log.data.encode('hex'), log.topics)
deserialized_args = decode_abi(unindexed_types, log.data)
o = {}
c1, c2 = 0, 0
for i in range(len(names)):
if indexed[i]:
topic_bytes = utils.zpad(utils.encode_int(log.topics[c1 + 1]),
32)
o[names[i]] = decode_single(process_type(indexed_types[c1]),
topic_bytes)
c1 += 1
else:
o[names[i]] = deserialized_args[c2]
c2 += 1
o["_event_type"] = utils.to_string(name)
if not noprint:
print(o)
return o
def hash_array(arr):
o = b''
for x in arr:
if isinstance(x, int):
x = utils.zpad(utils.encode_int(x), 32)
o += x
return utils.big_endian_to_int(utils.sha3(o))
def sender(self):
if not self._sender:
# Determine sender
if self.v:
if self.r >= N or self.s >= N or self.v < 27 or self.v > 28 \
or self.r == 0 or self.s == 0:
raise InvalidTransaction("Invalid signature values!")
log.debug('recovering sender')
rlpdata = rlp.encode(self, UnsignedTransaction)
rawhash = utils.sha3(rlpdata)
pk = PublicKey(flags=ALL_FLAGS)
try:
pk.public_key = pk.ecdsa_recover(
rawhash,
pk.ecdsa_recoverable_deserialize(
zpad(utils.bytearray_to_bytestr(int_to_32bytearray(self.r)), 32) + zpad(utils.bytearray_to_bytestr(int_to_32bytearray(self.s)), 32),
self.v - 27
),
raw=True
)
pub = pk.serialize(compressed=False)
except Exception:
raise InvalidTransaction("Invalid signature values (x^3+7 is non-residue)")
if pub[1:] == b"\x00" * 32:
raise InvalidTransaction("Invalid signature (zero privkey cannot sign)")
pub = encode_pubkey(pub, 'bin')
self._sender = utils.sha3(pub[1:])[-20:]
assert self.sender == self._sender
else:
self._sender = 0
return self._sender
def validate_proof(lottery, ticket, proof):
start = zpad(int_to_big_endian(ticket.begin), 4)
assert len(start) == 4
length = zpad(int_to_big_endian(ticket.length), 4)
assert len(length) == 4
h = sha3(ticket.address + start + length)
assert h == ticket.node.hash
for p in proof:
xor = b''.join(chr(ord(a) ^ ord(b)) for a, b in zip(h, p))
h = sha3(xor)
assert h == lottery.root.hash
h = sha3(lottery.nonce + h)
assert h == lottery.hash
def sha3num(*args):
o = ''
for arg in args:
if isinstance(arg, (int, long)):
o += utils.zpad(utils.encode_int(arg), 32)
else:
o += arg
return utils.sha3(o)
def getWork(self):
print 'Sending work...'
h = self.chain.chain.head_candidate
return [
encode_hex(h.header.mining_hash),
encode_hex(h.header.seed),
encode_hex(zpad(int_to_big_endian(2**256 // h.header.difficulty), 32))
]
def test_batch_transfer_to_zero(chain):
owner_addr, receiver_addr, gnt, gntb, cdep = mysetup(chain)
addr = b'\0' * 20
vv = zpad(int_to_big_endian(1), 12)
mix = vv + addr
payments = [mix]
assert len(mix) == 32
with pytest.raises(TransactionFailed):
gntb.transact({'from': owner_addr}).batchTransfer(payments, 123)
def __init__(self, left=None, right=None, value=None):
self.parent = None
if value:
begin = zpad(int_to_big_endian(value.begin), 4)
assert len(begin) == 4
length = zpad(int_to_big_endian(value.length), 4)
assert len(length) == 4
data = value.address + begin + length
assert len(data) == 20 + 4 + 4
self.hash = sha3(data)
self.value = value
self.value.node = self
else:
xor = b''.join(chr(ord(a) ^ ord(b)) for a, b in zip(left.hash, right.hash))
self.hash = sha3(xor)
self.left = left
self.right = right
self.left.parent = self
self.right.parent = self
def test_block_18315_changes():
pre = {}
toadd = [
['0x0000000000000000000000000000000000000000000000000000000000000000', '0xf9e88bc2b3203e764fe67b4d0f4171b7756117c8'],
['0x0000000000000000000000000000000000000000000000000000000000000001', '0x'],
['0x0000000000000000000000000000000000000000000000000000000000000002', '0x'],
]
db = RefcountDB(EphemDB())
db.logging = True
NODES = 60
t1 = pruning_trie.Trie(db)
t2 = pruning_trie.Trie(db)
db.ttl = NODES * 2
c = 0
for k, v in pre.items():
triekey = utils.sha3(utils.zpad(k[2:].decode('hex'), 32))
t1.update(triekey, rlp.encode(v[2:].decode('hex')))
t2.update(triekey, rlp.encode(v[2:].decode('hex')))
db.commit_refcount_changes(c)
db.cleanup(c)
c += 1
sys.stderr.write('##############################\n')
print(utils.encode_hex(t1.root_hash))
print(t1.to_dict())
for k, v in toadd:
sys.stderr.write('kv: %s %s\n' % (k, v))
triekey = utils.sha3(utils.zpad(utils.decode_hex(k[2:]), 32))
if v == '0x':
t1.delete(triekey)
else:
t1.update(triekey, rlp.encode(utils.decode_hex(v[2:])))
db.commit_refcount_changes(c)
db.cleanup(c)
c += 1
t1.clear_all()
db.commit_refcount_changes(c)
for i in range(db.ttl + 1):
db.cleanup(c)
c += 1
t3 = pruning_trie.Trie(db)
t3.root_hash = t2.root_hash
print(t3.to_dict())
def encode_payment(to, value):
value = long(value)
assert value < 2**96
value = zpad(int_to_big_endian(value), 12)
assert type(value) is str
assert len(value) == 12
to = normalize_address(to)
assert len(to) == 20
mix = value + to
assert len(mix) == 32
return mix
def run_test(filename, testname, testdata):
testdata = fixture_to_bytes(testdata)
try:
rlpdata = decode_hex(testdata["rlp"][2:])
o = {}
tx = rlp.decode(rlpdata, transactions.Transaction)
o["sender"] = tx.sender
o["transaction"] = {
"data": b'0x' * (len(tx.data) > 0) + encode_hex(tx.data),
"gasLimit": str_to_bytes(str(tx.startgas)),
"gasPrice": str_to_bytes(str(tx.gasprice)),
"nonce": str_to_bytes(str(tx.nonce)),
"r": b'0x' + encode_hex(utils.zpad(utils.int_to_big_endian(tx.r), 32)),
"s": b'0x' + encode_hex(utils.zpad(utils.int_to_big_endian(tx.s), 32)),
"v": str_to_bytes(str(tx.v)),
"value": str_to_bytes(str(tx.value)),
"to": encode_hex(tx.to),
}
except Exception, e:
tx = None
sys.stderr.write(str(e))
def _encode_function(self, signature, param_values):
prefix = utils.big_endian_to_int(utils.sha3(signature)[:4])
if signature.find('(') == -1:
raise RuntimeError('Invalid function signature. Missing "(" and/or ")"...')
if signature.find(')') - signature.find('(') == 1:
return utils.encode_int(prefix)
types = signature[signature.find('(') + 1: signature.find(')')].split(',')
encoded_params = encode_abi(types, param_values)
return utils.zpad(utils.encode_int(prefix), 4) + encoded_params
def test_block_18503_changes():
pre = {'0x0c': '0x29d33c02a200937995e632c4597b4dca8e503978'}
toadd = [
['0x', '0x09'],
]
db = RefcountDB(EphemDB())
db.logging = True
NODES = 60
t1 = pruning_trie.Trie(db)
t2 = pruning_trie.Trie(db)
db.ttl = NODES * 2
c = 0
for k, v in pre.items():
triekey = utils.sha3(utils.zpad(utils.decode_hex(k[2:]), 32))
t1.update(triekey, rlp.encode(utils.decode_hex(v[2:])))
t2.update(triekey, rlp.encode(utils.decode_hex(v[2:])))
db.commit_refcount_changes(c)
db.cleanup(c)
c += 1
print(utils.encode_hex(t1.root_hash))
for k, v in toadd:
sys.stderr.write('kv: %s %s\n' % (k, v))
triekey = utils.sha3(utils.zpad(utils.decode_hex(k[2:]), 32))
if v == '0x':
t1.delete(triekey)
else:
t1.update(triekey, rlp.encode(utils.decode_hex(v[2:])))
db.commit_refcount_changes(c)
db.cleanup(c)
c += 1
t1.clear_all()
db.commit_refcount_changes(c)
for i in range(db.ttl + 1):
db.cleanup(c)
c += 1
t3 = pruning_trie.Trie(db)
t3.root_hash = t2.root_hash
print(t3.to_dict())
def update(self, key, value):
"""
- increases the update counter
- retrieves the the old_update_counter for the key
- stores the value in leveldb
- generates a log: rlp[key, value, old_update_counter]
- computes the new state_digest as: H(last_state_digest, H(log))
- adds to the journal: state_digest | log | journal_entry_length
- updates index with the postion of the end of above journal_entry
"""
self.update_counter += 1
old_value, old_counter = self.get_raw(key)
# store in leveldb
if value:
_stored_value = rlp.encode([value, self.update_counter])
self.db.put(key, _stored_value)
else:
self.db.delete(key)
# generate log
log = rlp.encode([key, value, old_counter])
# update state
self.state_digest = sha3(self.state_digest + sha3(log))
# state_digest | [key, value, old_counter] | journal_entry_length
self.journal.write(self.state_digest)
self.journal.write(log)
journal_entry_length = 32 + len(log) + 2
assert journal_entry_length < b16, journal_entry_length
self.journal.write(zpad(int_to_big_endian(journal_entry_length), 2)) # 2 bytes
# write index
pos = self.journal.tell()
assert pos < b32
idx = zpad(int_to_big_endian(pos), 4) # 4 bytes
self.journal_index.write(idx)
def encode_payments(payments):
args = []
value_sum = 0L
for idx, v in payments:
addr = tester.accounts[idx]
value_sum += v
v = long(v)
assert v < 2**96
vv = zpad(int_to_big_endian(v), 12)
mix = vv + addr
assert len(mix) == 32
print encode_hex(mix), "v: ", v, "addr", encode_hex(addr)
args.append(mix)
return args, value_sum
def make_match(self, buyer, seller):
if buyer.epoch < self.current_block + self.SEALED_WINDOW:
print(self.name, 'making sealed offer', buyer.id, seller.id)
# TODO: check hash for adding sealed offer, ie hash preferences?
# TODO: rework this, see reveal
hash_arr = [buyer.epoch, buyer.id, seller.id]
shasum = utils.sha3(''.join(map(lambda x: utils.zpad(utils.encode_int(x), 32), hash_arr)))
# shasum = utils.sha3(hash_arr)
# TODO check epoch against SEALED_WINDOW
offer_id = self.market.add_sealed_offer(buyer.id, shasum)
print(self.name, 'shasum', utils.decode_int(shasum))
# TODO, combine preferences
# TODO rework this, can probably just have buyer and seller instead of id's only
offer = Offer(offer_id, buyer.epoch, buyer.id, seller.id, shasum, buyer.preferences)
self.sealed_offers.append(offer)
def account_to_dict(self, address, with_storage_root=False,
with_storage=True):
"""Serialize an account to a dictionary with human readable entries.
:param address: the 20 bytes account address
:param with_storage_root: include the account's storage root
:param with_storage: include the whole account's storage
"""
if len(address) == 40:
address = decode_hex(address)
assert len(address) == 20
if with_storage_root:
# if there are uncommited account changes the current storage root
# is meaningless
assert len(self.journal) == 0
med_dict = {}
account = self._get_acct(address)
for field in ('balance', 'nonce'):
value = self.caches[field].get(address, getattr(account, field))
med_dict[field] = to_string(value)
code = self.caches['code'].get(address, account.code)
med_dict['code'] = b'0x' + encode_hex(code)
storage_trie = SecureTrie(Trie(self.db, account.storage))
if with_storage_root:
med_dict['storage_root'] = encode_hex(storage_trie.get_root_hash())
if with_storage:
med_dict['storage'] = {}
d = storage_trie.to_dict()
subcache = self.caches.get(b'storage:' + address, {})
subkeys = [utils.zpad(utils.coerce_to_bytes(kk), 32)
for kk in list(subcache.keys())]
for k in list(d.keys()) + subkeys:
v = d.get(k, None)
v2 = subcache.get(utils.big_endian_to_int(k), None)
hexkey = b'0x' + encode_hex(utils.zunpad(k))
if v2 is not None:
if v2 != 0:
med_dict['storage'][hexkey] = \
b'0x' + encode_hex(utils.int_to_big_endian(v2))
elif v is not None:
med_dict['storage'][hexkey] = b'0x' + encode_hex(rlp.decode(v))
return med_dict
def _encode_payments(payments):
paymap = {}
for p in payments:
if p.payee in paymap:
paymap[p.payee] += p.value
else:
paymap[p.payee] = p.value
args = []
value = 0L
for to, v in paymap.iteritems():
value += v
assert v < 2**96
v = utils.zpad(utils.int_to_big_endian(v), 12)
pair = v + to
assert len(pair) == 32
args.append(pair)
return args, value
def test_lottery_randomise(self):
self.deploy_contract()
lottery = Lottery({tester.a1: 50 * eth, tester.a2: 50 * eth})
assert lottery.value == 100 * eth
self.lottery_init(3, lottery)
assert self.lottery_get_value(lottery) == lottery.value
self.state.mine(11)
assert self.state.block.number == 11
assert self.state.block.number > self.lottery_get_maturity(lottery)
r = self.lottery_get_rand(lottery)
assert r == 0
g = self.lottery_randomise(3, lottery)
assert g <= 44919
r = self.lottery_get_rand(lottery)
r = zpad(int_to_big_endian(r), 4)
assert r == self.state.block.get_parent().hash[-4:]
assert self.lottery_get_maturity(lottery) == 0
assert self.lottery_get_value(lottery) == lottery.value
