mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-18 14:28:08 +00:00
139 lines
5.0 KiB
Python
139 lines
5.0 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2016 GNS3 Technologies Inc.
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#
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# This program 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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# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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import sys
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import os
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import argparse
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import shutil
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import ipaddress
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if sys.platform.startswith("win"):
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import wmi
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else:
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raise SystemExit("This script must run on Windows!")
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def parse_add_loopback():
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"""
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Validate params when adding a loopback adapter
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"""
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class Add(argparse.Action):
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def __call__(self, parser, args, values, option_string=None):
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try:
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ipaddress.IPv4Interface(f"{values[1]}/{values[2]}")
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except ipaddress.AddressValueError as e:
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raise argparse.ArgumentTypeError(f"Invalid IP address: {e}")
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except ipaddress.NetmaskValueError as e:
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raise argparse.ArgumentTypeError(f"Invalid subnet mask: {e}")
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setattr(args, self.dest, values)
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return Add
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def add_loopback(devcon_path, name, ip_address, netmask):
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# save the list of network adapter in order to find the one we are about to add
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previous_adapters = wmi.WMI().Win32_NetworkAdapter()
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for adapter in previous_adapters:
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if "Loopback" in adapter.Description and adapter.NetConnectionID == name:
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raise SystemExit(f'Windows loopback adapter named "{name}" already exists')
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# install a new Windows loopback adapter
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os.system('"{}" install {}\\inf\\netloop.inf *MSLOOP'.format(devcon_path, os.path.expandvars("%WINDIR%")))
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# configure the new Windows loopback adapter
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for adapter in wmi.WMI().Win32_NetworkAdapter():
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if "Loopback" in adapter.Description and adapter not in previous_adapters:
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print(f'Renaming loopback adapter "{adapter.NetConnectionID}" to "{name}"')
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adapter.NetConnectionID = name
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for network_config in wmi.WMI().Win32_NetworkAdapterConfiguration(IPEnabled=True):
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if network_config.InterfaceIndex == adapter.InterfaceIndex:
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print(f'Configuring loopback adapter "{name}" with {ip_address} {netmask}')
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retcode = network_config.EnableStatic(IPAddress=[ip_address], SubnetMask=[netmask])[0]
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if retcode == 1:
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print("A reboot is required")
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elif retcode != 0:
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print('Error while configuring IP/Subnet mask on "{}"')
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# FIXME: support gateway?
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# network_config.SetGateways(DefaultIPGateway=[""])
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break
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# restart winpcap/npcap services to take the new adapter into account
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os.system("net stop npf")
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os.system("net start npf")
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os.system("net stop npcap")
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os.system("net start npcap")
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def remove_loopback(devcon_path, name):
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deleted = False
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for adapter in wmi.WMI().Win32_NetworkAdapter():
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if "Loopback" in adapter.Description and adapter.NetConnectionID == name:
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# remove a Windows loopback adapter
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print(f'Removing loopback adapter "{name}"')
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os.system(f'"{devcon_path}" remove @{adapter.PNPDeviceID}')
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deleted = True
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if not deleted:
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raise SystemExit(f'Could not find adapter "{name}"')
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# update winpcap/npcap services
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os.system("net stop npf")
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os.system("net start npf")
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os.system("net stop npcap")
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os.system("net start npcap")
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def main():
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"""
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Entry point for the Windows loopback tool.
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"""
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parser = argparse.ArgumentParser(description="%(prog)s add/remove Windows loopback adapters")
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parser.add_argument("-a", "--add", nargs=3, action=parse_add_loopback(), help="add a Windows loopback adapter")
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parser.add_argument("-r", "--remove", action="store", help="remove a Windows loopback adapter")
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try:
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args = parser.parse_args()
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except argparse.ArgumentTypeError as e:
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raise SystemExit(e)
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# devcon is required to install/remove Windows loopback adapters
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devcon_path = shutil.which("devcon")
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if not devcon_path:
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raise SystemExit("Could not find devcon.exe")
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from win32com.shell import shell
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if not shell.IsUserAnAdmin():
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raise SystemExit("You must run this script as an administrator")
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try:
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if args.add:
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add_loopback(devcon_path, args.add[0], args.add[1], args.add[2])
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if args.remove:
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remove_loopback(devcon_path, args.remove)
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except SystemExit as e:
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print(e)
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os.system("pause")
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if __name__ == "__main__":
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main()
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