NetworkManager-WiFi-WebUI

Simple web (http/browser) interface for NetworkManager daemon to manage WiFi connections.

Designed to work with JS enabled or not, dynamically updating through websockets (though currently xhr-streaming transport is forced, see notes below), http streaming, long-poll, jsonp or whatever other mechanism SockJS supports, if possible.

Requirements for this UI are to be fairly lite/minimal, responsive, be able to enable WiFi, pick AP, connect/disconnect and get basic status/scan updates, so nothing fancy, can almost be considered to be a proof of concept.

Contents

• Screenshot
• Installation
  • Requirements
• Notes

Screenshot

Uses bundled (old v3.1.1) bootstrap icons/css/js, bootstrap-switch, jquery/modernizr (both can probably be dropped by now), sockjs. Doesn't make any external api requests, no images or other static.

Installation

Process example (starting as root):

# useradd nm-wifi-webui
# mkdir -m0700 ~nm-wifi-webui
# chown -R nm-wifi-webui: ~nm-wifi-webui

# mkdir -p /etc/polkit-1/rules.d/
# cat >/etc/polkit-1/rules.d/50-nm-wifi-webui.rules <<EOF
polkit.addRule(function(action, subject) { if ( subject.user == "nm-wifi-webui"
  && action.id.indexOf("org.freedesktop.NetworkManager.") == 0 ) return polkit.Result.YES })
EOF

# mkdir -p /etc/polkit-1/localauthority/50-local.d/
# cat >/etc/polkit-1/localauthority/50-local.d/nm-wifi-webui.pkla <<EOF
[nm-wifi-webui]
Identity=unix-user:nm-wifi-webui
Action=org.freedesktop.NetworkManager.*
ResultAny=yes
EOF

# su - nm-wifi-webui

% pip2 install --user twisted txsockjs jinja2 txdbus bencode

% git clone --depth=1 https://github.com/mk-fg/NetworkManager-WiFi-WebUI
% cd NetworkManager-WiFi-WebUI
% ./nm-wifi-webui.py --debug

Note: "polkit-1/localauthority" is only for old polkit <= 0.105 (run pkaction --version), like ones that debians might still use.

See ./nm-wifi-webui.py --help output for more configuration options.

Make sure that you also have NetworkManager itself installed and running.

Requirements

• NetworkManager installed and running.
• Python 2.7
• Twisted
• SockJS-Twisted / txsockjs
• Jinja2
• TxDBus
• bencode

Notes

• Obviously, being a WebUI, this thing is only accessible through some kind of network interface (loopback counts), and at the same time is responsible for setting one up, so keep that in mind wrt potential uses.

  Common use-case is to show up in kiosk-mode browser on something like Raspberry Pi (until there's net connection), or be accessible over (not managed by NM) ethernet link.

• Code is a bit rusty and bitrotten, fixes are most welcome.

  In particular, sockjs + websockets over insecure connection don't seem to work in modern FF for me (while forcing other transport like xhr-streaming works fine), which might be trivial to fix though.

  See also: sockjs/sockjs-client#94

  Also, not using the thing (or NM) myself on a regular basis, so likely not a very well-maintained project.

• Doesn't need any extra webserver, as it runs on twisted.

• All communication with NM is done through DBus interface, so any permission errors there should be resolved either via /etc/dbus-1/system.d/*.conf files or /etc/polkit-1/rules.d/*.rules files.

  Daemon checks all permissions on start, and will exit immediately if any of them aren't unambiguous "yes".

• Daemon registers its own "Secret Agent" and stores auth info in secrets.bencode file alongside main script by default.

  See also --secrets-file option.

• When debugging DBus or websocket stuff, running script with --noise option can be useful, as it'd dump all traffic on these, as script is sending/receiving it.

• Note that gtk3 NM frontend(s) (e.g. default GNOME applet) can be used as a webui too with GDK_BACKEND=broadway, see: https://developer.gnome.org/gtk3/stable/gtk-broadway.html