mirror of
https://git.disroot.org/pranav/pybatmesh.git
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135 lines
4.9 KiB
Python
Executable File
135 lines
4.9 KiB
Python
Executable File
#!/usr/bin/env python3
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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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# 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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import sys
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from pathlib import Path
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from shutil import copy
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from dasbus.connection import SystemMessageBus
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from dasbus.error import DBusError
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NETWORKD_CONFIGS = "/usr/share/naxalnet/networkd"
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NETWORKD_VOLATILE_DIR = "/run/systemd/network"
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ADHOC_SSID = "HelloWorld"
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AP_SSID = "NaxalNet"
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AP_PASSWD = "naxalnet256"
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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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try:
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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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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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# connect to the System bus
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bus = SystemMessageBus()
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# iwd proxy
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iwd = bus.get_proxy("net.connman.iwd", "/")
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# Get list of all devices
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print("Finding connected devices")
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objects = iwd.GetManagedObjects()
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# devices that support ad-hoc
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adhoc_devices = []
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# devices that support ap
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ap_devices = []
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for path, obj in objects.items():
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if "net.connman.iwd.Device" in obj:
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# add all devices to the list
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name = obj["net.connman.iwd.Device"]["Name"]
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print("Found device", name)
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adapter_path = obj["net.connman.iwd.Device"]["Adapter"].get_string()
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adapter = objects[adapter_path]["net.connman.iwd.Adapter"]
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if "ad-hoc" in adapter["SupportedModes"]:
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print(name, "supports ad-hoc")
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adhoc_devices.append(path)
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if "ap" in adapter["SupportedModes"]:
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print(name, "supports ap")
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ap_devices.append(path)
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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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dev1path = 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 dev1 from ap_devices if it exists there
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if dev1path in ap_devices:
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ap_devices.remove(dev1path)
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print("Working on ad-hoc")
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dev1 = bus.get_proxy("net.connman.iwd", dev1path)
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print("Starting ad-hoc on", dev1.Name)
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if not dev1.Powered:
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print("Device is off. Turning on")
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dev1.Powered = True
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if dev1.Mode != "ad-hoc":
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print("Device is in", dev1.Mode)
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print("Switching to ad-hoc")
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dev1.Mode = "ad-hoc"
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# Changing Mode needs connecting to the proxy again
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dev1 = bus.get_proxy("net.connman.iwd", dev1path)
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# If already connected to ad-hoc, stop it
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if dev1.Started is True:
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print("Already connected to ad-hoc. Stopping")
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dev1.Stop()
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# Reconnect to proxy or StartOpen won't work
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dev1 = bus.get_proxy("net.connman.iwd", dev1path)
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print("Starting ad-hoc network")
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dev1.StartOpen(ADHOC_SSID)
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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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dev2path = ap_devices.pop()
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dev2 = bus.get_proxy("net.connman.iwd", dev2path)
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if not dev1.Powered:
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print("Device is off. Turning on")
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dev1.Powered = True
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if dev2.Mode != "ap":
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print(dev2.Name, "is in", dev2.Mode)
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print("Switching to ap")
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dev2.Mode = "ap"
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dev2 = bus.get_proxy("net.connman.iwd", dev2path)
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if dev2.Started is True:
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print("An AP is already started on", dev2.Name)
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print("Stopping")
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dev2.Stop()
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dev2 = bus.get_proxy("net.connman.iwd", dev2path)
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print("Starting AP on", dev2.Name)
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dev2.Start(AP_SSID, AP_PASSWD)
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except DBusError:
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sys.exit("An error occured while communicating with iwd")
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print("Bye")
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