0WM

Measure and visualize Wi-Fi coverage

Declared in: projects/0WM/default.nix

1. Install Nix
   Debian

   Bash

   $ apt install --yes curl git jq nix

   Ubuntu

   Bash

   $ apt install --yes curl git jq nix

   Arch

   Bash

   $ pacman --sync --refresh --noconfirm curl git jq nix

2. Download a configuration file

   # default.nix
   {
     ngipkgs ? import (fetchTarball "https://github.com/ngi-nix/ngipkgs/tarball/main") { },
   }:
   ngipkgs.demo-vm (
     { lib, ... }:
   
     {
       programs.zwm-client.enable = true;
       services.zwm-server = {
         enable = true;
         openFirewall = true;
         settings = {
           port = 3000;
           aps = [
             "http://127.0.0.1:8003" # mock access point
           ];
           ssids = [
             "Production"
           ];
         };
       };
     }
   
   )
   

   Download
3. Enable binary substituters

   Bash

   $ export NIX_CONFIG='substituters = https://cache.nixos.org/ https://ngi.cachix.org/
   trusted-public-keys = cache.nixos.org-1:6nchdd59x431o0gwypbmraurkbj16zpmqfgspcdshjy= ngi.cachix.org-1:n+cal72roc3qqulxihpv+tw5t42whxmmhpragkrsrow='

4. Build and run a virtual machine
   Debian Sid/Trixie

   Bash

   $ nix-build ./default.nix && ./result

   Ubuntu 25.04

   Bash

   $ nix-build ./default.nix && ./result

   Ubuntu 24.04

   Bash

   $ rev=$(nix-instantiate --eval --attr sources.nixpkgs.rev https://github.com/ngi-nix/ngipkgs/archive/master.tar.gz | jq --raw-output)

   $ nix-shell -I nixpkgs=https://github.com/NixOS/nixpkgs/archive/$rev.tar.gz --packages nix --run "nix-build ./default.nix && ./result"

   Arch

   Bash

   $ nix-build ./default.nix && ./result

5. Usage Instructions

   1. Click on the bottom left menu, Network, and open the Chromium browser

   2. Open a terminal and start the client, OpMode and mock access point programs:

      $ 0wm-client &
      $ 0wm-opmode &
      $ 0wm-ap-mock &
      

   3. Visit http://127.0.0.1:8002 in your browser

   4. Press the Click here to start button and give it location permissions, when asked.

      If the icons on the left are not green, you may have to restart the page for the permissions change to take effect.

   5. Press the SCAN button, on the right, which will scan the mock access point.

   6. If the scan was successful, the following will be printed in the terminal:

      "GET /cgi-bin/scan/radio0 HTTP/1.1" 200 -
      "GET /cgi-bin/scan/radio1 HTTP/1.1" 200 -
      

{ ... }:

{
  programs.zwm-client.enable = true;
}

{ ... }:

{
  services.zwm-server = {
    enable = true;
    openFirewall = true;
    settings = {
      port = 3000;
      aps = [
        "http://127.0.0.1:8003" # mock access point
      ];
      ssids = [
        "Production"
      ];
    };
  };
}

This project is funded by NLnet through these subgrants:

Core

0WM

Related links:

• Homepage
• Source repository