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# Copyright (c) Authors of Clover
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
from __future__ import print_function
from kubernetes import client, config
import grpc
import argparse
import snort_pb2
import snort_pb2_grpc
def run(args, grpc_port='50052'):
# get pod ip for grpc
pod_ip = get_podip(args['service_name'])
if pod_ip == '':
return "Can not find service: {}".format(args['service_name'])
snort_grpc = pod_ip + ':' + grpc_port
# snort_grpc = 'localhost:50052'
channel = grpc.insecure_channel(snort_grpc)
stub = snort_pb2_grpc.ControllerStub(channel)
# execute command in service
if args['cmd'] == 'addtcp':
return add_tcprule(stub)
elif args['cmd'] == 'addicmp':
return add_icmprule(stub)
elif args['cmd'] == 'start':
return start_snort(stub)
elif args['cmd'] == 'stop':
return stop_snort(stub)
else:
return "Invalid command: {}".format(args['cmd'])
def get_podip(pod_name):
ip = ''
if pod_name != '':
config.load_kube_config()
v1 = client.CoreV1Api()
ret = v1.list_pod_for_all_namespaces(watch=False)
for i in ret.items:
if i.metadata.name.lower().find(pod_name.lower()) != -1:
print("Pod IP: {}".format(i.status.pod_ip))
ip = i.status.pod_ip
return str(ip)
return str(ip)
def add_tcprule(stub):
try:
response = stub.AddRules(snort_pb2.AddRule(
protocol='tcp', dest_port='any', dest_ip='$HOME_NET',
src_port='any', src_ip='any', msg='tcp test', sid='10000002',
rev='001'))
print(stop_snort(stub))
print(start_snort(stub))
except Exception as e:
return e
return response.message
def add_icmprule(stub):
try:
response = stub.AddRules(snort_pb2.AddRule(
protocol='icmp', dest_port='any', dest_ip='$HOME_NET',
src_port='any', src_ip='any', msg='icmp test', sid='10000001',
rev='001'))
print(stop_snort(stub))
print(start_snort(stub))
except Exception as e:
return e
return response.message
def start_snort(stub):
try:
response = stub.StartSnort(snort_pb2.ControlSnort(pid='0'))
except Exception as e:
return e
return response.message
def stop_snort(stub):
try:
response = stub.StopSnort(snort_pb2.ControlSnort(pid='0'))
except Exception as e:
return e
return response.message
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument(
'--service_name', required=True,
help='Snort service/pod name to reconfigure')
parser.add_argument(
'--cmd', required=True,
help='Command to execute in snort service')
args = parser.parse_args()
print(run(vars(args)))
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