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pybatmesh
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Set gateway mode automatically #18

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pranav merged 23 commits from gateway into master 2021-10-09 11:57:53 +02:00
Conversation 1 Commits 23 Files Changed 25 +590 -279
25 changed files with 590 additions and 279 deletions
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23
CHANGELOG.md
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@ -1,23 +1,28 @@
# Changelog
## [Unreleased][] - 2021-09-21
## [Unreleased][] - 2021-10-08
- Better error messages
- Sets gateway mode automatically (to choose the best available
connection). **This might cause problems with nodes running previous
version of naxalnet** (#15)
- Cleanup before exit
- Closed #19
## [v0.4.0][] - 2021-09-20
- naxalnet is now a daemon! naxalnet will reconfigure the WiFi network
every time a WiFi adapter is plugged in or removed
every time a WiFi adapter is plugged in or removed (#14)
- **Logging**: logs to systemd journal when run from systemd, stderr
otherwise
otherwise (#13)
- New dependency `python-systemd`
- Fixed dependency order in systemd service
- Added `--verbose` argument
## [v0.3.0][] - 2021-08-19
- Support for arguments
- Configuration file support with fallback values
- Support for arguments (#11)
- Configuration file support with fallback values (#11)
- Made messages more readable
- Improved documentation in docstrings
- Changed default name of mesh network. **This will make naxalnet
@ -26,15 +31,17 @@
## [v0.2.0][] - 2021-07-26
- rfkill support
- rewrite into python module
- rfkill support (#9)
- rewrite into python module (#5)
## [v0.1.0][] - 2021-06-19
Initial python version. At first, this was a shell script. Than it was
Rewrite to python. At first, this was a shell script. Then it was
converted into a single python file that did just what the shell script
used to do. The shell script was not given a version.
- Closed #1 and #3
[unreleased]: https://git.disroot.org/pranav/naxalnet/compare/v0.4.0...HEAD
[v0.4.0]: https://git.disroot.org/pranav/naxalnet/compare/v0.3.0...v0.4.0
[v0.3.0]: https://git.disroot.org/pranav/naxalnet/compare/v0.2.0...v0.3.0

7
HACKING.md
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@ -5,13 +5,12 @@ Everyone can [hack][] naxalnet. See below for how to hack.
## Reporting issues and suggesting ideas
To report a bug or suggest an idea, create a new issue at
<https://git.disroot.org/pranav/naxalnet/issues> with a
relevant label.
<https://git.disroot.org/pranav/naxalnet/issues>
## Improving documentation
The README and HACKING.md needs to be more beginner friendly.
See section below.
See #20.
## Contribute code
@ -26,6 +25,6 @@ Currently this program is only packaged for Arch Linux.
naxalnet needs packages in GNU+Linux+systemd
distributions such as Debian, Fedora, openSUSE,
and nixos. If you know/like to package it in your distro,
post to issue #6.
post a message to issue #6.
[hack]: https://catb.org/jargon/html/H/hack.html

5
MANIFEST.in
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@ -1,5 +0,0 @@
include LICENSE
include README.md
include naxalnet.service
include naxalnet.conf.example
recursive-include systemd-networkd *

24
Makefile
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@ -1,27 +1,37 @@
# This makefile uses setup.py under the hood.
# In ubuntu, python and pip are symlinks to python2 and pip2, not
# python3. So we have to specify python as python3 by default.
# This makefile uses setup.py under the hood. In debian, and therefore
# ubuntu, and in fedora, python and pip are symlinks to python2 and pip2,
# not python3. So we have to specify python as python3 by default.
PYTHON := python3
PIP := pip3
# This can be changed when creating a package for your POSIX distribution
DESTDIR:= /
all: build
# Build only when naxalnet/__init__.py changes. We assume here that anyone
# creating a new commit will first update the __version__ in
# naxalnet/__init__.py
build: naxalnet/__init__.py
$(PYTHON) setup.py build
install: build
install:
$(PYTHON) setup.py install --root="$(DESTDIR)" --optimize=1 --skip-build
uninstall:
$(PIP) uninstall -y naxalnet
rm -rf /usr/share/naxalnet /usr/lib/systemd/system/naxalnet.service
@echo "The directory /etc/naxalnet was not removed." && \
@echo "make uninstall will not remove anything in /etc/naxalnet" && \
echo "Do 'sudo make purge' to remove it."
# remove config files, like apt purge
rpm:
$(PYTHON) setup.py bdist_rpm --requires python3-dasbus,python3-systemd,iwd,systemd-networkd
# Remove config files, like apt purge. Purge should first do what
# uninstall does, so we add uninstall as a dependency to this rule.
purge: uninstall
rm -rf /etc/naxalnet
clean:
rm -rf build naxalnet.egg-info **/__pycache__
rm -rf build *.egg-info **/__pycache__ dist

156
README.md
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@ -1,18 +1,15 @@
# naxalnet
**naxalnet** is a program to create a wireless mesh network for
communicating with each other. It can be useful during an
[internet shutdown](#internet-shutdown), or to join
[online classes](#online-class) with a group of laptops.
It uses [B.A.T.M.A.N. Advanced][batman-adv], an implementation
of the B.A.T.M.A.N. routing protocol to communicate with peers.
The name naxal comes from Naxalbari, a village in Darjeeling,
West Bengal.
communicating with each other. It can be useful during an [internet
shutdown](#internet-shutdown), or to join [online classes](#online-class)
with a group of laptops. It uses [B.A.T.M.A.N. Advanced][batman-adv], an
implementation of the B.A.T.M.A.N. routing protocol to communicate with
peers. The name naxal comes from Naxalbari, a village in Darjeeling, West
Bengal.
WARNING:
This program uses an **unencrypted** network. This means
you do not get any more privacy or security than with an open WiFi
network.
**WARNING**: This program uses an **unencrypted** network. This means you do
not get any more privacy or security than with an open WiFi network.
<!-- NOTE TO ACTIVISTS
@ -27,23 +24,24 @@ well-being if you get arrested under a draconian national security law.
-->
<!-- UNCOMMENT WHEN NECESSARY
**Disclaimer**:
In case you are either 1) a complete idiot; or 2) a member of the saffron
brigade; or 3) both, please be aware that this project is not affiliated
with any human rights groups designated as "terrorist" groups in India.
**Disclaimer**: In case you are either 1: a complete idiot; or 2: a member
of the saffron brigade; or 3: both, please be aware that this project is
not affiliated with any human rights defenders or with anyone currently at
risk of death in overcrowded prisons.
Using the name naxal does not imply any form of connection
with anyone currently at risk of death in overcrowded prisons.
Using the name naxal in a program will not shake the foundations of
democracy nor affect the soverignty, unity or integrity of any
nation-state. .
-->
## Requirements
- [systemd-networkd v248 or more][batman-systemd]
- Linux kernel with batman-adv module
- [systemd-networkd v248 or greater][batman-systemd]
- Linux kernel with [batman-adv v2021.0][batman-systemd] or greater
- [iwd][] for controlling the WiFi adapter
- python3
- python3-setuptools, for building and installing naxalnet
- python (tested only on 3.9)
- python setuptools, for building and installing naxalnet
- [python-systemd][], for logging to systemd journal
- [dasbus][], for communicating with iwd
- two or more machines with a WiFi adapter having ibss support, called
@ -53,8 +51,8 @@ with anyone currently at risk of death in overcrowded prisons.
## Installing
This program is available in the AUR for Arch users. Building
manually for other distributions may not always work.
This program is available in the AUR for Arch users. Users of other
distributions will have to build manually.
### Arch Linux
@ -65,21 +63,17 @@ development version) from the AUR with your favourite helper:
yay -S naxalnet
```
Optionally, [setup systemd-resolved][arch-resolved] for DNS if any
of the nodes have internet access. [Start naxalnet][startnx] when
you need it.
Optionally, [setup systemd-resolved][arch-resolved] for DNS. [Start
naxalnet][startnx] when you need it.
### Ubuntu
### Debian or Ubuntu
naxalnet is not packaged for Ubuntu, so you will have to build
and install it manually.
Currently, only the **unreleased 21.10** comes with the
required version of systemd. Therefore, naxalnet **won't work on Ubuntu
21.04 or older**.
naxalnet is not packaged for Debian or Ubuntu, so you will have to build
and install it manually. Currently, only Debian experimental and Ubuntu
21.10 comes with the required version of systemd. Therefore, naxalnet
requires **Debian experimental** or **Ubuntu 21.10 or greater** to work.
<!-- TODO: remove this message if systemd 248 arrives in 21.04 -->
Install the requirements from the Ubuntu repositories:
Install the requirements from the repositories:
```sh
# batctl is optional
@ -93,20 +87,47 @@ Now follow the instructions in the
### Fedora
naxalnet is not packaged for Fedora, so it should be installed
manually. naxalnet requires atleast systemd v248 which is only
available on **Fedora 34 and above**. Install the dependencies:
naxalnet is not packaged for Fedora, so it should be installed manually.
naxalnet requires atleast systemd v248, which is only available on **Fedora
34 and above**. python-setuptools support building rpms, which are the
preferred way of installing software in Fedora. Follow the steps to
install naxalnet on Fedora:
```sh
# systemd-resolved may be required for rawhide
sudo dnf install systemd-networkd iwd python3-dasbus python3-setuptools python3-systemd
```
# Install the build requirements
sudo dnf install python3-setuptools make git
Now head over to the [next section][install-manual] to install naxalnet.
# Clone the repo
git clone https://git.disroot.org/pranav/naxalnet.git
cd naxalnet
# Create an installable rpm from the source code
make rpm
# Now install it. This will also install the requirements
sudo dnf install dist/naxalnet-$(python3 -m setup --version)-1.noarch.rpm
```
### Manually
Install the [requirements][requirements].
Verify that the [requirements][] are of required versions.
```sh
# Should be greater than or equal to 2021.0
batctl -v
# 248 or greater
systemctl --version
# Atleast 4.4
uname -r
# >= 3.6
python3 --version
# Check for IBSS (ad-hoc) support in your WiFi firmware or driver
iw phy | grep -iq ibss && echo "IBSS is supported" || echo "IBSS not supported"
```
Clone the naxalnet repo and cd into it.
@ -135,7 +156,8 @@ To upgrade, clean the build files, update the repo and reinstall:
make clean
git pull
make
sudo make uninstall install
sudo make uninstall
sudo make install
```
This will keep the configuration files.
@ -154,15 +176,16 @@ To start naxalnet, do the command on all the nodes:
sudo systemctl start naxalnet.service
```
This will start a mesh network and connect to all nodes.
To test if it works, run `sudo batctl n -w` and check for
nodes. If there are any nodes, your network is up. Press
Ctrl+C to stop `batctl`.
This will start a mesh network and connect to all nodes. To test if it
works, run `sudo batctl n -w` and check for nodes. If there are any nodes,
your network is up. Press Ctrl+C to stop `batctl`.
### Getting internet access
Connect an ethernet cable from a router to any of the nodes and
renew the DHCP connection of all peers. To do this, type
Connect an ethernet cable from a router to any of the nodes. Now restart
naxalnet on the node to set `gateway_mode` to `server`. Other nodes will
take a minute or more to renew DHCP. You can optionally do this manually
if you don't want the delay. To do this, type
`sudo networkctl renew bridge0` on all nodes.
### Tethering via WiFi AP
@ -186,12 +209,26 @@ sudo systemctl enable naxalnet.service
```
Now naxalnet will start a mesh on every boot.
Disable the service to stop running at boot:
If you have NetworkManager enabled, which is the default in Ubuntu and
Fedora, it should be disabled:
```sh
sudo systemctl disable NetworkManager.service
```
To stop running at boot, you should disable `naxalnet.service`:
```sh
sudo systemctl disable naxalnet.service
```
If you had disabled `NetworkManager` before, enable it:
```sh
sudo systemctl enable NetworkManager.service
```
### Stopping the service
```sh
@ -224,6 +261,10 @@ arguments:
naxalnet --help
```
## Contributing or reporting bugs
See [HACKING.md](HACKING.md)
## How it works
There are three modes commonly supported by WiFi adapters - `ap` (WiFi
@ -262,10 +303,11 @@ Withheld due to national security reasons.
You can communicate with neighbouring devices running naxalnet, using
services like [IPFS][], [Jami][], [Secure Scuttlebutt][ssb] and others
which can work on an intranet. They should be installed on your
machine _before_ your friendly democratic government announces an
[internet shutdown][], since you cannot download and install them
during a shutdown. When a shutdown occurs, [enable naxalnet][enablenx].
which can work on an intranet. They should be installed on your machine
_before_ your friendly democratic government announces an [internet
shutdown][], since you cannot download and install them during a shutdown.
When a shutdown occurs, [enable naxalnet][enablenx] and use the installed
software to communicate with anyone within range.
## Uninstalling
@ -279,10 +321,6 @@ sudo make uninstall
sudo make purge
```
## Contributing or reporting bugs
See [HACKING.md](HACKING.md)
## Similar projects
Many projects make setting up B.A.T.M.A.N. Advanced mesh networks with

14
naxalnet.conf.example
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@ -11,6 +11,19 @@ confdir = /usr/share/naxalnet/networkd
# See man:systemd.network(5)
runtimedir = /run/systemd/network
[device]
# These are better left this way
# Changing this won't do you any good, unless you have
# other network configs that would mess things up.
batman=bat0
bridge=bridge0
[gateway]
# This helps users choose the best network when multiple machines
# offer an internet connection, or to be more precise, a DHCP server
# Allowed values: auto, server, client or off
mode=auto
[adhoc]
# All your nodes should have the same name
name = NxMesh
@ -20,4 +33,3 @@ name = NxMesh
ssid = MeshWiFi
# Note the spelling. It's passwd, not password.
passwd = naxalnet256

12
naxalnet.service
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@ -21,16 +21,8 @@ Type=notify
NotifyAccess=all
Restart=on-failure
RestartSec=2sec
ExecStart=/usr/bin/naxalnet --systemd
# Reload systemd-networkd after naxalnet signals it is ready
ExecStartPost=/usr/bin/networkctl reload
# When naxalnet exits, delete all files starting
# with mesh.* in /run/systemd/network
ExecStopPost=/usr/bin/find /run/systemd/network -type f -delete -name "mesh.*"
# Then delete the two interfaces created...
ExecStopPost=/usr/bin/networkctl delete bridge0 bat0
# ... and reload the configuration files.
ExecStopPost=/usr/bin/networkctl reload
ExecStart=naxalnet --systemd
KillSignal=SIGINT
# naxalnet already logs to systemd journal so we don't need
# stdout and stderr.
StandardOutput=null

31
naxalnet/__init__.py
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@ -1,25 +1,32 @@
# This file is part of naxalnet.
# Copyright (C) 2021 The naxalnet Authors
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
"""
naxalnet
========
Create mesh networks with batman-adv, systemd-networkd and iwd.
See README.md for documentation.
See README.md and the docstrings for documentation. You can read
documentaion in the python interpretor using something like the example
given below.
>>> help("naxalnet")
>>> help("naxalnet.config")
"""
# GUIDE FOR CHANGING __version__
@ -35,4 +42,4 @@ See README.md for documentation.
#
# In case you forgot to change the version, skip the number
# and put the next number in the next commit.
__version__ = "0.4.0a1"
__version__ = "0.4.0a6"

7
naxalnet/__main__.py
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@ -16,9 +16,16 @@
"""
__main__.py
-----------
If called as python -m naxalnet, this file makes naxalnet run like
it was called from the commandline. Try:
python -m naxalnet --help
WARNING: Using naxalnet might threaten the soverignity and integrity of
your nation-state. The authors are not responsible for any damage caused
while using this software.
"""
from naxalnet.scripts import main

103
naxalnet/config.py
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@ -1,59 +1,56 @@
# This file is part of naxalnet.
# Copyright (C) 2021 The naxalnet Authors
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
"""
config.py
---------
This file contains functions to parse configuration files
and arguments. Most of these functions are meant to be used
by parse_args() internally, so only parse_args() should
be imported outside this file.
This file contains functions to parse configuration files and arguments.
Most of these functions are meant to be used by parse_args() internally,
so only parse_args() should be imported outside this file.
Some parts of naxalnet can be configured by configuration
files and arguments. First, the default values from
default.py is taken. Then, key-value pairs from the
configuration files are read, if they exist, in the
following order:
Some parts of naxalnet can be configured by configuration files and
arguments in a specific order. First, the default values from default.py
is taken. Then, key-value pairs from the configuration files are read, if
they exist, in the following order:
- First it reads /usr/share/naxalnet/naxalnet.conf and then from
/usr/share/naxalnet/naxalnet.conf.d/*.conf where *.conf means any file
with the name ending with ".conf". The files in this directory are
intended to be used by distribution and package maintainers.
- First it reads /usr/share/naxalnet/naxalnet.conf
and then from /usr/share/naxalnet/naxalnet.conf.d/*.conf
where *.conf means any file with the name ending with
".conf". The files in this directory are intended
to be used by distribution and package maintainers.
- Next, it does the same with /usr/local/share/naxalnet
- Then, it looks for the files naxalnet.conf and
naxalnet.conf.d/*.conf from the directory
/etc/naxalnet, like it did up above. This directory is where
the user creates and stores the config file.
- Then it parses the arguments from the commandline,
storing the values in the files parsed until now
as fallback. Finally you get an argpase.Namespace object
from parse_args().
Because of the way this is implemented, all key-value
pairs in the configuration should have an argument
too, or they won't be parsed.
All the key-value pairs are replaced successively if they exist
by each new configuration file parsed, similar
to how systemd parses configuration and service files.
If any of the files checked does not exist, then they are
ignored and the next combination is checked. If none of
the config files exist and no arguments are given, the
fallback data from default.py is used.
- Then, it looks for the files naxalnet.conf and naxalnet.conf.d/*.conf
from the directory /etc/naxalnet, like it did up above. This directory
is where the user creates and stores the config file.
- Then it parses the arguments from the commandline, storing the values in
the files parsed until now as fallback. Finally you get an
argpase.Namespace object from parse_args(). Because of the way this is
implemented, all key-value pairs in the configuration should have an
argument too, or they won't be parsed.
All the key-value pairs are replaced successively if they exist by each
new configuration file parsed, similar to how systemd parses configuration
and service files. If any of the files checked does not exist, then they
are ignored and the next combination is checked. If none of the config
files exist and no arguments are given, the fallback data from default.py
is used.
"""
from pathlib import Path
@ -158,6 +155,24 @@ def parse_args() -> Namespace:
help="send log messages to systemd journal",
)
parser.add_argument(
"--batman-device",
default=config["device"]["batman"],
help="name of interface used by batman-adv",
)
parser.add_argument(
"--bridge-device",
default=config["device"]["bridge"],
help="name of bridge interface",
)
parser.add_argument(
"--gateway-mode",
default=config["gateway"]["mode"],
help="auto, server, client, or off",
)
parser.add_argument(
"--version",
"-V",
@ -170,8 +185,10 @@ def parse_args() -> Namespace:
"-v", "--verbose", action="count", default=0, help="increase output verbosity"
)
# logger.debug("Parsing arguments")
return parser.parse_args()
# This is defined here because log.py needs some arguments to determine
# the loglevel and where to send the log message to. If you know a better
# way of implementing it, create an issue
args = parse_args()

26
naxalnet/daemon.py
View File

@ -1,24 +1,25 @@
# This file is part of naxalnet.
# Copyright (C) 2021 The naxalnet Authors
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
"""
daemon.py
---------
The daemon part. This is currently under construction.
The daemon part. This is used to perform some work when a new wifi adapter
is plugged in, or it is removed.
"""
from dasbus.loop import EventLoop
@ -32,13 +33,14 @@ class Daemon:
def __init__(self):
self.loop = EventLoop()
self.iwd = IWD()
self.callback = None
def on_device_add(self, path, data):
"""
this function will be run every time a device is added
"""
if IWD_DEVICE_INTERFACE in data:
logger.debug("New device %s found", str(data[IWD_DEVICE_INTERFACE]["Name"]))
logger.debug("New device %s found", data[IWD_DEVICE_INTERFACE]["Name"])
logger.info("Reloading")
self.callback()

35
naxalnet/default.py
View File

@ -1,29 +1,28 @@
# This file is part of naxalnet.
# Copyright (C) 2021 The naxalnet Authors
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
"""
default.py
----------
This file contains default values for configuration.
This is taken as fallback data by config.py if no
configuration files were found, or if a key-value pair
was not present in the config file. The data will be
further changed by arguments if naxalnet is called
from the commandline. See config.py for more info.
This file contains default values for configuration. This is taken as
fallback data by config.py if no configuration files were found, or if a
key-value pair was not present in the config file. The data will be
further changed by arguments if naxalnet is called from the commandline.
See config.py for more info.
"""
CONFIG = {
@ -31,13 +30,17 @@ CONFIG = {
"confdir": "/usr/share/naxalnet/networkd",
"runtimedir": "/run/systemd/network",
},
"device": {"batman": "bat0", "bridge": "bridge0"},
"adhoc": {"name": "NxMesh"},
"ap": {"ssid": "MeshWiFi", "passwd": "naxalnet256"},
"gateway": {"mode": "auto"},
}
# glob
CONFIG_FILES = ["naxalnet.conf", "naxalnet.conf.d/*.conf"]
CONFIG_DIRS = ["/usr/share/naxalnet", "/usr/local/share/naxalnet", "/etc/naxalnet"]
MESH_GLOB = "mesh.*"
TMP_NET_GLOB = "tmp.*"
ISSUE_URL = "https://git.disroot.org/pranav/naxalnet/issues"
REPORT_BUG_INFO = "If you think this is a bug, report it to " + ISSUE_URL

109
naxalnet/iwd.py
View File

@ -1,60 +1,54 @@
# This file is part of naxalnet.
# Copyright (C) 2021 The naxalnet Authors
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
"""
iwd.py
------
This file contains methods to communicate with iwd via
its D-Bus API and control WiFi adapters.
This file contains methods to communicate with iwd via its D-Bus API and
control WiFi adapters.
Some terms used here, such as device and adapter might
confuse you if you haven't used iwctl before.
Just as a quick reference, here is a list of terms
and what they mean:
Some terms used here, such as device and adapter might confuse you if you
haven't used iwctl before. Just as a quick reference, here is a list of
terms and what they mean:
- ad-hoc: a mode supported by some WiFi adapters to
start a decentralised network, where there
is no central point of failure.
- ad-hoc: a mode supported by some WiFi adapters to start a decentralised
network, where there is no central point of failure.
- ap: a mode used to start a central access point
so that other machines without naxalnet can
connect to the mesh. AP is also known as
WiFi hotspot.
- ap: a mode used to start a central access point so that other machines
without naxalnet can connect to the mesh. AP is also known as WiFi
hotspot.
- station: this is the mode most WiFi adapters use
by default. This mode is used to connect to
an ap. naxalnet DOES NOT use this mode.
- station: this is the mode most WiFi adapters use by default. This mode
is used to connect to an ap. naxalnet DOES NOT use this mode.
- adapter: a physical WiFi chip or something similar
that is present inside most laptops and phones
or can be connected via USB to a machine.
- adapter: a physical WiFi chip or something similar that is present
inside most laptops and phones or can be connected via USB to a
machine.
- device: an interface provided by the kernel to control
an adapter. Some adapters can have multiple
devices so that you can start an ap on one device
and an ad-hoc on the other. By default, iwd starts
- device: an interface provided by the kernel to control an adapter. Some
adapters can have multiple devices so that you can start an ap
on one device and an ad-hoc on the other. By default, iwd starts
only one device each for one adapter.
- machine: Since iwd uses the term device for a
WiFi interface, we use the word machine to
refer to a computer, or a laptop, or a phone.
- machine: Since iwd uses the term device for a WiFi interface, we use the
word machine to refer to a computer, or a laptop, or a phone.
- node: a machine that runs naxalnet and is therefore
connected to the mesh.
- node: a machine that runs naxalnet and is therefore connected to the
mesh.
"""
from dasbus.connection import SystemMessageBus
@ -74,7 +68,7 @@ class IWD:
"""Manage iwd via dbus"""
def __init__(self, bus=SystemMessageBus()):
# self._bus and self._proxy are meant for use only in this file
# self._bus and self._proxy are meant for use only in this submodule
self._bus = bus
self.reload()
@ -95,9 +89,9 @@ class IWD:
for i in device_paths:
proxy = self._bus.get_proxy(IWD_BUS, i)
if proxy.Name == name:
return i
# If no devices were found, return None
return None
# See comment in the function below
path = i
return path
def get_adapter_path_from_name(self, name: str) -> str:
"""returns path of adapter as str"""
@ -105,9 +99,10 @@ class IWD:
for i in adapter_paths:
proxy = self._bus.get_proxy(IWD_BUS, i)
if proxy.Name == name:
return i
# If no adapters were found
return None
# We could have just used return here, but shutting up
# pylint has a greter priority at the moment
path = i
return path
def get_all_device_paths(self) -> list:
"""returns list of paths of all devices"""
@ -132,7 +127,8 @@ class IWD:
def get_devices(self) -> list:
"""
returns list of device names as str
returns list of all device names as str
example: ["wlan0", "wlan1"]
"""
devices = []
@ -146,6 +142,7 @@ class IWD:
def get_adapters(self) -> list:
"""
returns list of adapters
example: ["phy0","phy1"]
"""
adapters = []
@ -160,6 +157,7 @@ class IWD:
class Device:
"""
control devices with iwd
name: name of device (str)
adapter: name of adapter (str)
"""
@ -190,7 +188,10 @@ class Device:
self.reload()
def reload(self):
"""reload the proxy after changing mode"""
"""
Reload the proxy. Used liberally by other
members to work around errors
"""
self._proxy = self._bus.get_proxy(IWD_BUS, self._path)
self.name = self._proxy.Name
adapter_path = self._proxy.Adapter
@ -235,16 +236,15 @@ class Device:
if it isn't already on ad-hoc and power onn the device
if it is off
"""
print("Starting adhoc", name)
# Stop adhoc if already started
self.stop_adhoc()
if self.get_mode() != "ad-hoc":
self.set_mode("ad-hoc")
if not self.is_powered_on():
self.power_on()
# Stop adhoc if already started
self.stop_adhoc()
logger.debug("Starting ad-hoc on %s", self.name)
self._proxy.StartOpen(name)
@ -261,15 +261,16 @@ class Device:
if it isn't already on ap and turning
on the device if it is off
"""
# Stop ap if already started
self.stop_ap()
if self.get_mode() != "ap":
self.set_mode("ap")
if not self.is_powered_on():
self.power_on()
# Stop ap if already started
self.stop_ap()
logger.debug("Starting ap on %s with ssid %s", self.name, ssid)
self._proxy.Start(ssid, passwd)

5
naxalnet/log.py
View File

@ -18,8 +18,9 @@
log.py
------
Initialise the logger for other submodules to import. Do not
import any submodules here except for naxallnet.config
Initialise the logger for other submodules to import. Do not import any
submodules here other than naxallnet.config, which is needed to set the
loglevel and to add the systemd journal handler
"""
import logging
from systemd.journal import JournalHandler

120
naxalnet/network.py Normal file
View File

@ -0,0 +1,120 @@
# This file is part of naxalnet.
# Copyright (C) 2021 The naxalnet Authors
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
network.py
----------
This submodule manages the systemd-networkd configuration. This is used to
add configuration files to the systemd-networkd runtime directory.
Some configuration files have variables which should be substituted by
str.format() in python. The values for these variables can be set using
NetworkD.set_vars(). See files in the systemd-networkd directory for
examples.
"""
import subprocess
from pathlib import Path
from dasbus.connection import SystemMessageBus
NETWORKD_BUS = "org.freedesktop.network1"
NETWORKD_PATH = "/org/freedesktop/network1"
class NetworkD:
"""
Control systemd-networkd using configuration files. Since these
were made for use by naxalnet only, the class is not suitable for
importing outside naxalnet.
"""
def __init__(self, runtime_dir="/run/systemd/network", bus=SystemMessageBus()):
self._bus = bus
self.proxy_reload()
self.variables = {}
self.runtime_path = Path(runtime_dir)
# Create the runtime directory if it doesn't exist
self.runtime_path.mkdir(parents=True, exist_ok=True)
def set_vars(self, **variables):
"""set the variables to replace with str.format"""
self.variables = variables
def proxy_reload(self) -> None:
"""reload the proxy"""
self.proxy = self._bus.get_proxy(NETWORKD_BUS, NETWORKD_PATH)
def reload(self) -> None:
"""
Reload the systemd-networkd configuration. This is used by many
class methods after doing their job.
"""
self.proxy.Reload()
def add_config(self, name: str) -> None:
"""add config file to runtime directory and reload networkd"""
source = Path(name)
destination = self.runtime_path / source.name
# Substitute variables in the config
text = source.read_text(encoding="utf-8").format(**self.variables)
# now write it to a runtime config of the same name
destination.write_text(text, encoding="utf-8")
self.reload()
def is_routable(self) -> bool:
"""returns true if any interface is routable"""
return self.proxy.AddressState == "routable"
def delete_interface(self, name: str) -> None:
"""delete the given interface"""
# If anyone knows a better way of doing this, create
# an issue and get things done
subprocess.run(["networkctl", "delete", name], check=True)
# This is probably not required. This is mainly to shut up
# pylint's messages
self.reload()
def disable_config(self, name: str) -> None:
"""
Disable or mask the config of the same name. This can only be
used for configs in /usr/lib/systemd/network and
/usr/local/lib/systemd/network. It works on the same principle
used by systemctl mask, that is, it created a symlink of the same
name in the runtime directory and links it to /dev/null.
"""
path = self.runtime_path / name
path.symlink_to("/dev/null")
self.reload()
def remove_config(self, name: str) -> None:
"""
remove the file called 'name' from the runtime dir and reload
"""
path = self.runtime_path / name
path.unlink()
self.reload()
def remove_all_configs(self) -> None:
"""
Remove all configs in runtime_path. This will remove all files
in runtime_path without checking who put them there.
"""
for i in self.runtime_path.iterdir():
self.remove_config(i.name)

134
naxalnet/scripts.py
View File

@ -27,39 +27,80 @@ When run from the commandline, the function main() is called.
"""
import sys
import time
from pathlib import Path
from shutil import copy
from dasbus.error import DBusError
from systemd.daemon import notify
from naxalnet import __version__
from naxalnet.default import REPORT_BUG_INFO
from naxalnet.default import REPORT_BUG_INFO, MESH_GLOB, TMP_NET_GLOB
from naxalnet.log import logger
from naxalnet.iwd import Adapter, Device, IWD
from naxalnet.config import args
from naxalnet.daemon import Daemon
from naxalnet.network import NetworkD
def copy_files():
def get_sorted_glob(directory: str, glob: str) -> list:
"""return sorted list of filenames matching glob"""
path = Path(directory)
glob_list = path.glob(glob)
sorted_list = []
for i in glob_list:
# g is a list of PosixPath objects.
# So we add their absolute path as str.
sorted_list.append(str(i))
# sorted_list is not sorted, so we sort them here
sorted_list.sort()
return sorted_list
def any_interface_is_routable():
"""returns true if any of the interfaces is routable"""
networkd = NetworkD(runtime_dir=args.networkd_runtime_dir)
# First, add the temporary configs to networkd.
for i in get_sorted_glob(args.networkd_config_dir, TMP_NET_GLOB):
logger.debug("Adding temporary config %s", i)
networkd.add_config(i)
# Then, wait for some time to setup the network.
# This can probably be replaced by a d-bus wait-for-signal
# function that timeouts after 10 seconds.
time.sleep(10)
routable = networkd.is_routable()
networkd.remove_all_configs()
return routable
def setup_mesh(gateway_mode: str = "off"):
"""
Copy networkd configs to volatile dir.
The D-Bus API does not support creating new interfaces
or linking to bridges. So we use config files.
See man:systemd.network(5)
configure networkd to setup the mesh
gateway_mode can be client, server, or off
"""
try:
notify("STATUS=Configuring the network...")
logger.info("Copying network config files")
dest = Path(args.networkd_runtime_dir)
src = Path(args.networkd_config_dir)
# Create the volatile directory if it doesn't exist
dest.mkdir(parents=True, exist_ok=True)
networkd = NetworkD(runtime_dir=args.networkd_runtime_dir)
networkd.set_vars(
batdev=args.batman_device,
bridgedev=args.bridge_device,
gateway_mode=gateway_mode,
)
# Copy all files in src to dest
for i in src.iterdir():
copy(i, dest)
# Fix for issue #19. There should be a switch to disable this
# humanitarian intervention. We don't want to adopt the U.S.
# foreign policy here.
networkd.disable_config("80-wifi-adhoc.network")
for i in get_sorted_glob(args.networkd_config_dir, MESH_GLOB):
logger.debug("Adding network config %s", i)
networkd.add_config(i)
except PermissionError:
logger.exception("A PermissionError occured while copying files")
logger.exception(
"A PermissionError occured while copying files. Make sure you are root."
)
logger.error(REPORT_BUG_INFO)
sys.exit(3)
except:
@ -111,8 +152,10 @@ def setup_devices():
if not adhoc_adapter.is_powered_on():
logger.debug("Adapter %s is off. Turning on", adhoc_adapter.name)
adhoc_adapter.power_on()
logger.info("Starting mesh on %s", adhoc_device.name)
adhoc_device.start_adhoc_open(args.adhoc_name)
# Start Access point if ap_device is not empty,
# ie, we have more devices
if len(ap_devices) != 0:
@ -138,11 +181,30 @@ def setup_devices():
logger.error(REPORT_BUG_INFO)
sys.exit(4)
except:
logger.exception("An unknow error occured while setting up the mesh")
logger.exception("An unknown error occured while setting up the mesh")
logger.error(REPORT_BUG_INFO)
sys.exit(4)
def cleanup():
"""
Remove all network config, poweroff used wireless devices and
exit with 0.
"""
networkd = NetworkD(runtime_dir=args.networkd_runtime_dir)
logger.info("Exiting gracefully")
networkd.remove_all_configs()
for i in IWD().get_devices():
logger.debug("Turning off %s", i)
device = Device(i)
# device.set_mode("station")
device.power_off()
logger.debug("Deleting interface %s", args.batman_device)
networkd.delete_interface(args.batman_device)
logger.debug("Deleting interface %s", args.bridge_device)
networkd.delete_interface(args.bridge_device)
def print_wifi():
"""
Prints the name and password of the adhoc, and ap
@ -171,20 +233,40 @@ def main():
elif args.version:
print_version()
sys.exit(0)
copy_files()
setup_devices()
# Notify systemd that naxalnet is ready.
# see man:sd_notify(3)
notify("READY=1")
# Start the daemon so that setup_devices() is called every
# time a device is connected or removed.
daemon = Daemon()
daemon.add_callback(setup_devices)
# Gateway mode comes in handy when many nodes have a DHCP server and
# you want to prevent conflicts. It defaults to "auto" in naxalnet.
# https://www.open-mesh.org/projects/batman-adv/wiki/Gateways
if args.gateway_mode == "auto":
logger.info("Checking for internet connection")
notify("STATUS=Checking for internet")
# If any interface is routable, set gateway mode to server
if any_interface_is_routable():
gateway_mode = "server"
else:
gateway_mode = "client"
logger.info("gateway_mode set to %s", gateway_mode)
elif args.gateway_mode in ["server", "client", "off"]:
gateway_mode = args.gateway_mode
else:
logger.error("gateway-mode has an illegal value")
sys.exit(5)
notify("STATUS=Waiting for changes")
daemon.start()
try:
setup_devices()
setup_mesh(gateway_mode=gateway_mode)
# naxalnet prints Bye while exiting.
logger.info("Bye")
# Start the daemon so that setup_devices() is called every
# time a device is connected or removed.
daemon = Daemon()
daemon.add_callback(setup_devices)
notify("STATUS=Waiting for changes")
daemon.start()
# systemd uses SIGINT to kill this program
except KeyboardInterrupt:
cleanup()

4
setup.cfg
View File

@ -1,3 +1,4 @@
# This program is not meant to be distributed through PyPi
[metadata]
name = naxalnet
version = attr: naxalnet.__version__
@ -34,7 +35,7 @@ console_scripts =
lib/systemd/system =
naxalnet.service
# If installing with pip, this file will be copied to some other place.
# This is the reason we use setup.py instead of pip.
# This is the reason we use setup.py instead of pip in the Makefile.
/etc/naxalnet =
naxalnet.conf.example
share/naxalnet/networkd =
@ -45,3 +46,4 @@ share/naxalnet/networkd =
systemd-networkd/mesh.05-wireless-ap.network
systemd-networkd/mesh.06-eth.network
systemd-networkd/mesh.07-bridge.network
systemd-networkd/tmp.01-eth.network

13
systemd-networkd/mesh.01-batman.netdev
View File

@ -1,10 +1,13 @@
# Create the BATMAN interface
# See 04-batman.network for configuration details
# See mesh.04-batman.network for configuration details
[NetDev]
Name=bat0
Name={batdev}
Description=BATMAN interface
Kind=batadv
# Use default settings. Uncomment to change
# see man:systemd.netdev(5) § [BATMANADVANCED] SECTION OPTIONS
#[BatmanAdvanced]
# See man:systemd.netdev(5) § [BATMANADVANCED] SECTION OPTIONS
[BatmanAdvanced]
# This helps choose the best network when many nodes have a DHCP
# server. See the B.A.T.M.A.N. documentation at
# https://www.open-mesh.org/projects/batman-adv/wiki/Gateways
GatewayMode={gateway_mode}

4
systemd-networkd/mesh.02-bridge.netdev
View File

@ -1,8 +1,8 @@
# Create a bridge interface
# The batman interface be will later linked to this bridge.
# See 07-bridge.network to see how this bridge is configured
# See mesh.07-bridge.network to see how this bridge is configured
[NetDev]
Name=bridge0
Name={bridgedev}
Description=Bridge
Kind=bridge

2
systemd-networkd/mesh.03-wireless-ad-hoc.network
View File

@ -10,7 +10,7 @@ MTUBytes=1560
[Network]
Description=ad-hoc network connecting to other nodes
BatmanAdvanced=bat0
BatmanAdvanced={batdev}
# This interface should not have any IP addresses assigned.
# IP will be given later to the bridge
DHCP=no

8
systemd-networkd/mesh.04-batman.network
View File

@ -1,11 +1,11 @@
[Match]
Name=bat0
Name={batdev}
[Network]
Description=The BATMAN interface
Bridge=bridge0
Description=Configuration for the BATMAN interface
Bridge={bridgedev}
# like in 03-wireless-ad-hoc.network, this interface
# like in mesh.03-wireless-ad-hoc.network, this interface
# also shouldn't have IP address the address will
# be assigned to the bridge
DHCP=no

4
systemd-networkd/mesh.05-wireless-ap.network
View File

@ -8,10 +8,10 @@
WLANInterfaceType=ap
[Network]
Description=Wireless AP
Description=Configuration for Wireless AP
# link the interface to the bridge
Bridge=bridge0
Bridge={bridgedev}
# Like in the ad-hoc network and bat0, this interface
# should not have any ip address assigned to it.

5
systemd-networkd/mesh.06-eth.network
View File

@ -1,8 +1,9 @@
# This file bridges any ethernet device found
# to the bridge made in 02-bridge.netdev
# to the bridge made in mesh.02-bridge.netdev
[Match]
Name=en*
Name=eth*
[Network]
Bridge=bridge0
Description=Connect ethernet to the bridge
Bridge={bridgedev}

8
systemd-networkd/mesh.07-bridge.network
View File

@ -3,13 +3,15 @@
# communicate with others devices
[Match]
Name=bridge0
Name={bridgedev}
[Network]
# use DHCP to assign an IP
Description=bridge to link non-batman machines
# Use DHCP to assign an IP
DHCP=yes
# if DHCP fails, assign a random address
# If DHCP fails, assign a random address. This is probably the default,
# but we are specifying it anyway.
LinkLocalAddressing=yes
# LLMNR and MulticastDNS are used for hostname discovery

10
systemd-networkd/tmp.01-eth.network Normal file
View File

@ -0,0 +1,10 @@
# This is used to check if any ethernet or USB ethernet ports
# is connected to a router or some other device with a DHCP server.
# After checking, this file is no longer needed.
[Match]
Name=eth*
Name=en*
[Network]
Description=Check for ethernet connection
DHCP=yes