90 lines
2.9 KiB
Python
90 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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#
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# 2020 Nico Schottelius (nico-cdist at schottelius.org)
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#
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# This file is part of cdist.
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#
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# cdist is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# cdist is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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import logging
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import sys
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from datetime import datetime
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log = logging.getLogger("scan")
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def run(scan, args):
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# We run each component in a separate process since they
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# must not block on each other.
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processes = []
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if 'trigger' in args.mode:
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t = scan.Trigger(interfaces=args.interfaces, sleeptime=args.trigger_delay)
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t.start()
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processes.append(t)
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log.debug("Trigger started")
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if 'scan' in args.mode:
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s = scan.Scanner(interfaces=args.interfaces, args=args)
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s.start()
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processes.append(s)
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log.debug("Scanner started")
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for process in processes:
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process.join()
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def list(scan, args):
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s = scan.Scanner(interfaces=args.interfaces, args=args)
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hosts = s.list()
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# A full IPv6 addresses id composed of 8 blocks of 4 hexa chars +
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# 6 colons.
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ipv6_max_size = 8 * 4 + 10
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# We format dates as follow: YYYY-MM-DD HH:MM:SS
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date_max_size = 8 + 2 + 6 + 2
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print("{} | {}".format(
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'link-local address'.ljust(ipv6_max_size),
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'last seen'.ljust(date_max_size)))
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print('=' * (ipv6_max_size + 3 + date_max_size))
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for addr in hosts:
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last_seen = datetime.strftime(
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datetime.strptime(hosts[addr]['last_seen'].strip(), '%Y-%m-%d %H:%M:%S.%f'),
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'%Y-%m-%d %H:%M:%S')
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print("{} | {}".format(addr.ljust(ipv6_max_size),last_seen.ljust(date_max_size)))
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# CLI processing is defined outside of the main scan class to handle
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# non-available optional scapy dependency (instead of crashing mid-flight).
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def commandline(args):
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log.debug(args)
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# Check if we have the optional scapy dependency available.
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try:
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import cdist.scan.scan as scan
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except ModuleNotFoundError:
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log.error('cdist scan requires scapy to be installed. Exiting.')
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sys.exit(1)
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# Set default operation mode.
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if not args.mode:
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# By default scan and trigger, but do not call any action.
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args.mode = ['scan', 'trigger', ]
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# Print known hosts and exit is --list is specified - do not start
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# the scanner.
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if args.list:
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list(scan, args)
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else:
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run(scan, args)
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