def get_msg_state(block, msg, code):
msg_state = {}
# msg_state['contract'] = msg.to
msg_state['balance'] = block.get_balance(msg.to)
storages = ['{}: {}'.format(utils.hexprint(storage['key']), utils.hexprint(storage['value'])) for storage in block.get_storage_data(msg.to)]
msg_state['storage'] = storages
msg_state['code'] = code
return msg_state
def log (name, obj):
assert type(obj) == dict
# Convert binary.
for key in obj.keys():
if type(obj[key]) == bytes:
obj[key] = utils.hexprint(obj[key])
# Truncate long lines.
for key in obj.keys():
if type(obj[key]) == str and len(obj[key]) > 120:
obj[key] = obj[key][:60] + '…' + obj[key][-60:]
# Sort
if name == 'OP':
keyorder = ['pc', 'gas', 'op', 'stackargs', 'value', 'stack']
obj = sorted(obj.items(), key=lambda i:keyorder.index(i[0]))
else:
obj = sorted(obj.items())
lines = ['{}: {}'.format(pair[0], pair[1]) for pair in obj]
if 'op' == name.lower():
string = str(lines).replace("'", "")[1:-1]
logger.debug('\tOP ' + string)
else:
if name:
logger.debug(name)
for line in lines:
logger.debug('\t' + str(line))
def apply_msg(db, block, tx, msg, code):
"""
logger.debug('\n')
new_dict = vars(msg).copy()
new_dict.update(get_msg_state(block, msg, code))
logger.debug('\nBEGIN MESSAGE')
log('', new_dict)
"""
pblogger.log("MSG APPLY", tx=tx.hex_hash(), sender=msg.sender, to=msg.to,
gas=msg.gas, value=msg.value, data=utils.hexprint(msg.data))
pblogger.log('MSG PRE STATE', account=msg.to, state=block.account_to_dict(msg.to))
# Transfer value, instaquit if not enough
o = block.transfer_value(tx, msg.sender, msg.to, msg.value)
if not o:
return 1, msg.gas, []
# logger.info('CODE {}'.format(util.hexlify(code)))
if code in code_cache:
processed_code = code_cache[code]
else:
processed_code = [opcodes.opcodes.get(c, ['INVALID', 0, 0, [], 0]) +
[c] for c in code]
code_cache[code] = processed_code
# logger.info('PROCESSED_CODE {}'.format(processed_code))
try:
# Snapshot.
# NOTE: If I use explicit savepoints and rollbacks instead of this `with`,
# then I can stop passing around `db`.
with db:
# Initialise compustate.
compustate = Compustate(gas=msg.gas)
t, ops = time.time(), 0
# Main loop
# logger.debug('')
while True:
o = apply_op(db, block, tx, msg, processed_code, compustate)
ops += 1
if o is not None:
""""
if data == OUT_OF_GAS:
data_printable = -1
else:
data_printable = bytes(data)
msg_applied = {'data (result)': data_printable,
'sender': msg.sender,
'to': msg.to,
'gas': gas_remaining}
new_dict = msg_applied.copy()
new_dict.update(get_msg_state(msg, code))
logger.debug('')
log('', new_dict)
logger.debug('END MESSAGE\n')
"""
pblogger.log('MSG APPLIED', result=o, gas_remained=compustate.gas,
sender=msg.sender, to=msg.to, ops=ops,
time_per_op=(time.time() - t) / ops)
pblogger.log('MSG POST STATE', account=msg.to,
state=block.account_to_dict(msg.to))
if o == OUT_OF_GAS:
block.revert()
raise OutOfGas
else:
return 1, compustate.gas, o
# When out of gas, break out of the `with` and then `return`.
except OutOfGas as e:
result = 0
data = []
gas_remained = compustate.gas
return result, gas_remained, data
def account_to_dict(self, address):
return {'nonce': Block.get_nonce(self, address), 'balance': Block.get_balance(self, address), 'storage': Block.get_storage_data(self, address), 'code': utils.hexprint(Block.get_code(self, address))}