monkey/chaos_monkey/network/network_scanner.py

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2015-08-30 15:27:35 +08:00
import time
import socket
import logging
from network import HostScanner
from config import WormConfiguration
__author__ = 'itamar'
LOG = logging.getLogger(__name__)
SCAN_DELAY = 0
class NetworkScanner(object):
def __init__(self):
self._ip_addresses = None
self._ranges = None
def initialize(self):
# get local ip addresses
local_hostname = socket.gethostname()
self._ip_addresses = socket.gethostbyname_ex(local_hostname)[2]
if not self._ip_addresses:
raise Exception("Cannot find local IP address for the machine")
LOG.info("Found local IP addresses of the machine: %r", self._ip_addresses)
self._ranges = [WormConfiguration.range_class(ip_address)
for ip_address in self._ip_addresses]
LOG.info("Base local networks to scan are: %r", self._ranges)
def get_victim_machines(self, scan_type, max_find=5):
assert issubclass(scan_type, HostScanner)
scanner = scan_type()
victims_count = 0
for range in self._ranges:
LOG.debug("Scanning for potantional victims in the network %r", range)
for victim in range:
# skip self IP address
if victim.ip_addr in self._ip_addresses:
continue
LOG.debug("Scanning %r...", victim)
# if scanner detect machine is up, add it to victims list
if scanner.is_host_alive(victim):
LOG.debug("Found potational victim: %r", victim)
victims_count += 1
yield victim
if victims_count >= max_find:
LOG.debug("Found max needed victims (%d), stopping scan", max_find)
break
if SCAN_DELAY:
time.sleep(SCAN_DELAY)