157 lines
4.5 KiB
Python
157 lines
4.5 KiB
Python
#!/usr/bin/env python3
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# Copyright (C) 2021 The naxalnet Authors
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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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# 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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# 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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"""
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Setup a working BATMAN Advanced network
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with systemd-networkd and iwd
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"""
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import sys
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from pathlib import Path
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from shutil import copy
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from dasbus.error import DBusError
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from argparse import ArgumentParser
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from naxalnet.iwd import IWD, Device, Adapter
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NETWORKD_CONFIGS = "/usr/share/naxalnet/networkd"
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NETWORKD_VOLATILE_DIR = "/run/systemd/network"
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# default values
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ADHOC_NAME = "HelloWorld"
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AP_SSID = "NaxalNet"
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AP_PASSWD = "naxalnet256"
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def copy_files():
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"""
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Copy networkd configs to volatile dir.
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The D-Bus API does not support creating new interfaces
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or linking to bridges. So we use config files.
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See man:systemd.network(5)
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"""
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print("Copying network config files")
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dest = Path(NETWORKD_VOLATILE_DIR)
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src = Path(NETWORKD_CONFIGS)
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# Create the volatile directory if it doesn't exist
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dest.mkdir(parents=True, exist_ok=True)
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# Copy all files in src to dest
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for i in src.iterdir():
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copy(i, dest)
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def setup_devices(args):
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iwd = IWD()
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devices = iwd.get_devices()
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adhoc_devices = []
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ap_devices = []
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# Find devices supporting ad-hoc and ap
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for i in devices:
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device = Device(i)
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adapter = Adapter(device.adapter)
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if adapter.supports_mode("ad-hoc"):
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adhoc_devices.append(i)
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if adapter.supports_mode("ap"):
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ap_devices.append(i)
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if len(adhoc_devices) != 0:
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# Start ad-hoc on first device supporting ad-hoc
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adhoc_device = Device(adhoc_devices.pop())
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# The same device is likely to have ap support too.
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# But we can't start ad-hoc and ap on the same interface.
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# Remove adhoc_device from ap_devices if it exists there
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if adhoc_device.name in ap_devices:
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ap_devices.remove(adhoc_device.name)
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print("Working on ad-hoc")
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# Turn on adapter if it is off
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# See issue #9
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adhoc_adapter = Adapter(adhoc_device.adapter)
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if not adhoc_adapter.is_powered_on():
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adhoc_adapter.power_on()
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adhoc_device.reload()
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adhoc_device.start_adhoc_open(args.adhoc_name)
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# Start Access point if ap_device is not empty,
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# ie, we have more devices
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if len(ap_devices) != 0:
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print("Working on AP")
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ap_device = Device(ap_devices.pop())
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# Turn on adapter if it is off
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# See issue #9
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ap_adapter = Adapter(ap_device.adapter)
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if not ap_adapter.is_powered_on():
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ap_adapter.power_on()
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ap_adapter.reload()
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ap_device.start_ap(args.ap_ssid, args.ap_passwd)
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def here_be_dragons():
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"""
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This function is run every time you
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execute naxalnet from commandline
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"""
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args = parse_args()
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try:
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copy_files()
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except PermissionError as error:
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print(error)
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sys.exit("Make sure you are root")
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# Now, the iwd part
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try:
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setup_devices(args)
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except DBusError as error:
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print(error)
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sys.exit("An error occured while communicating with iwd")
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# naxalnet will print Bye if no errors occured
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print("Bye")
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def parse_args():
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parser = ArgumentParser(
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description="setup batman-adv networks with systemd and iwd"
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)
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parser.add_argument(
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"--ap-ssid",
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"-n",
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type=str,
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help="SSID of the WiFi AP",
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default=AP_SSID,
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)
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parser.add_argument(
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"--ap-passwd",
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"-p",
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"--ap-password",
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type=str,
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help="password of the WiFi AP",
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default=AP_PASSWD,
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)
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parser.add_argument(
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"--adhoc-name", "-a", type=str, default=ADHOC_NAME, help="name of adhoc network"
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)
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parser.add_argument(
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"-v",
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"--verbose",
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help="increase output verbosity; can be used multiple times",
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action="count",
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default=0,
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)
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return parser.parse_args()
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