tobiko/tobiko/shell/tcpdump/_interface.py

47 lines
1.7 KiB
Python

# Copyright (c) 2021 Red Hat, Inc.
#
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from __future__ import absolute_import
from tobiko.shell.tcpdump import _parameters
def get_tcpdump_command(parameters: _parameters.TcpdumpParameters):
interface = TcpdumpInterface()
return interface.get_tcpdump_command(parameters)
class TcpdumpInterface:
def get_tcpdump_command(
self, parameters: _parameters.TcpdumpParameters) -> str:
command = 'tcpdump -s0 -Un'
if parameters.capture_timeout is not None:
command = f'timeout {parameters.capture_timeout} ' + command
options = self.get_tcpdump_options(parameters=parameters)
return command + ' ' + options
def get_tcpdump_options(
self,
parameters: _parameters.TcpdumpParameters) -> str:
options = f'-w {parameters.capture_file}'
if parameters.interface is not None:
options += f' -i {parameters.interface}'
else:
options += ' -i any'
if parameters.capture_filter is not None:
options += f' {parameters.capture_filter}'
return options