77 lines
2.5 KiB
Python
77 lines
2.5 KiB
Python
import logging
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import time
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from config import WormConfiguration
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from info import local_ips, get_interfaces_ranges
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from range import *
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from . import HostScanner
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__author__ = 'itamar'
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LOG = logging.getLogger(__name__)
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SCAN_DELAY = 0
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class NetworkScanner(object):
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def __init__(self):
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self._ip_addresses = None
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self._ranges = None
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def initialize(self):
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"""
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Set up scanning.
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based on configuration: scans local network and/or scans fixed list of IPs/subnets.
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:return:
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"""
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# get local ip addresses
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self._ip_addresses = local_ips()
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if not self._ip_addresses:
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raise Exception("Cannot find local IP address for the machine")
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LOG.info("Found local IP addresses of the machine: %r", self._ip_addresses)
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# for fixed range, only scan once.
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self._ranges = [NetworkRange.get_range_obj(address_str=x) for x in WormConfiguration.subnet_scan_list]
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if WormConfiguration.local_network_scan:
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self._ranges += get_interfaces_ranges()
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LOG.info("Base local networks to scan are: %r", self._ranges)
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def get_victim_machines(self, scan_type, max_find=5, stop_callback=None):
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assert issubclass(scan_type, HostScanner)
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scanner = scan_type()
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victims_count = 0
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for net_range in self._ranges:
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LOG.debug("Scanning for potential victims in the network %r", net_range)
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for victim in net_range:
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if stop_callback and stop_callback():
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LOG.debug("Got stop signal")
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break
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# skip self IP address
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if victim.ip_addr in self._ip_addresses:
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continue
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# skip IPs marked as blocked
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if victim.ip_addr in WormConfiguration.blocked_ips:
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LOG.info("Skipping %s due to blacklist" % victim)
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continue
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LOG.debug("Scanning %r...", victim)
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# if scanner detect machine is up, add it to victims list
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if scanner.is_host_alive(victim):
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LOG.debug("Found potential victim: %r", victim)
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victims_count += 1
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yield victim
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if victims_count >= max_find:
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LOG.debug("Found max needed victims (%d), stopping scan", max_find)
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break
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if SCAN_DELAY:
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time.sleep(SCAN_DELAY)
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