cdist/cdist/scan/commandline.py

117 lines
3.6 KiB
Python

# -*- coding: utf-8 -*-
#
# 2020 Nico Schottelius (nico-cdist at schottelius.org)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
import logging
import sys
from datetime import datetime
log = logging.getLogger("scan")
def run(scan, args):
# We run each component in a separate process since they
# must not block on each other.
processes = []
if 'trigger' in args.mode:
t = scan.Trigger(interfaces=args.interface,
sleeptime=args.trigger_delay)
t.start()
processes.append(t)
log.debug("Trigger started")
if 'scan' in args.mode:
s = scan.Scanner(
autoconfigure='config' in args.mode,
interfaces=args.interface,
name_mapper=args.name_mapper)
s.start()
processes.append(s)
log.debug("Scanner started")
for process in processes:
process.join()
def list(scan, args):
s = scan.Scanner(interfaces=args.interface, name_mapper=args.name_mapper)
hosts = s.list()
# A full IPv6 addresses id composed of 8 blocks of 4 hexa chars +
# 6 colons.
ipv6_max_size = 8 * 4 + 10
date_max_size = len(datetime.now().strftime(scan.datetime_format))
name_max_size = 25
print("{} | {} | {} | {}".format(
'name'.ljust(name_max_size),
'address'.ljust(ipv6_max_size),
'last seen'.ljust(date_max_size),
'last configured'.ljust(date_max_size)))
print('=' * (name_max_size + 3 + ipv6_max_size + 2 * (3 + date_max_size)))
for host in hosts:
last_seen = host.last_seen()
if last_seen:
last_seen = last_seen.strftime(scan.datetime_format)
else:
last_seen = '-'
last_configured = host.last_configured()
if last_configured is not None:
last_configured = last_configured.strftime(scan.datetime_format)
else:
last_configured = '-'
print("{} | {} | {} | {}".format(
host.name(default='-').ljust(name_max_size),
host.address().ljust(ipv6_max_size),
last_seen.ljust(date_max_size),
last_configured.ljust(date_max_size)))
# CLI processing is defined outside of the main scan class to handle
# non-available optional scapy dependency (instead of crashing mid-flight).
def commandline(args):
log.debug(args)
# Check if we have the optional scapy dependency available.
try:
import cdist.scan.scan as scan
except ModuleNotFoundError:
log.error('cdist scan requires scapy to be installed. Exiting.')
sys.exit(1)
# Set default operation mode.
if not args.mode:
# By default scan and trigger, but do not call any action.
args.mode = ['scan', 'trigger', ]
if 'config' in args.mode and args.name_mapper is None:
print('--name-mapper must be specified for scanner config mode.',
file=sys.stderr)
sys.exit(1)
# Print known hosts and exit is --list is specified - do not start
# the scanner.
if args.list:
list(scan, args)
else:
run(scan, args)