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- #!/usr/bin/env python3
- #
- # Copyright (c) 2017-2019 Joe Clarke <jclarke@cisco.com>
- # All rights reserved.
- #
- # Redistribution and use in source and binary forms, with or without
- # modification, are permitted provided that the following conditions
- # are met:
- # 1. Redistributions of source code must retain the above copyright
- # notice, this list of conditions and the following disclaimer.
- # 2. Redistributions in binary form must reproduce the above copyright
- # notice, this list of conditions and the following disclaimer in the
- # documentation and/or other materials provided with the distribution.
- #
- # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- # SUCH DAMAGE.
- import paramiko
- import os
- from sparker import Sparker
- import time
- from subprocess import Popen, PIPE
- import shlex
- import re
- import json
- import CLEUCreds
- from cleu.config import Config as C
- routers = {}
- commands = {
- 'ip_route': 'show ip route',
- 'ipv6_route': 'show ipv6 route'
- }
- cache_dir = '/home/jclarke/routing-tables'
- ROUTER_FILE = '/home/jclarke/routers.json'
- WEBEX_ROOM = 'Core Alarms'
- if __name__ == '__main__':
- spark = Sparker(token=CLEUCreds.SPARK_TOKEN)
- ssh_client = paramiko.SSHClient()
- ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
- try:
- fd = open(ROUTER_FILE, 'r')
- routers = json.load(fd)
- fd.close()
- except:
- pass
- for router, ip in routers.items():
- try:
- ssh_client.connect(ip, username=CLEUCreds.NET_USER, password=CLEUCreds.NET_PASS,
- timeout=60, allow_agent=False, look_for_keys=False)
- chan = ssh_client.invoke_shell()
- for fname, command in commands.items():
- output = ''
- try:
- chan.sendall("term length 0\n")
- chan.sendall("term width 0\n")
- chan.sendall("{}\n".format(command))
- i = 0
- while i < 10:
- if chan.recv_ready():
- break
- time.sleep(.5)
- i += 1
- while chan.recv_ready():
- output = output + chan.recv(65535)
- except Exception as ie:
- print('Failed to get {} from {}: {}'.format(
- command, router, ie))
- continue
- fpath = '{}/{}-{}'.format(cache_dir, fname, router)
- curr_path = fpath + '.curr'
- prev_path = fpath + '.prev'
- fd = open(curr_path, 'w')
- output = re.sub(r'\r', '', output)
- output = re.sub(r'([\d\.]+) (\[[^\n]+)',
- '\\1\n \\2', output)
- fd.write(
- re.sub(r'(via [\d\.]+), [^,\n]+([,\n])', '\\1\\2', output))
- fd.close()
- if os.path.exists(prev_path):
- proc = Popen(
- shlex.split('/usr/bin/diff -E -b -B -w -u {} {}'.format(prev_path, curr_path)), stdout=PIPE, stderr=PIPE)
- out, err = proc.communicate()
- rc = proc.returncode
- if rc != 0:
- spark.post_to_spark(
- C.WEBEX_TEAM, WEBEX_ROOM, '**ALERT**: Routing table diff ({}) on **{}**:\n```\n{}\n```'.format(command, router, re.sub(cache_dir + '/', '', out)))
- time.sleep(1)
- #print('XXX: Out = \'{}\''.format(out))
- os.rename(curr_path, prev_path)
- except Exception as e:
- ssh_client.close()
- print('Failed to get routing tables from {}: {}'.format(router, e))
- continue
- ssh_client.close()
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