Add WireGuard VPN config and xmobar indicator on laptop

2 files changed, 26 insertions, 1 deletions

diff --git a/hosts/laptop/configuration.nix b/hosts/laptop/configuration.nix
index 1bfa033..0c87cfe 100644
--- a/hosts/laptop/configuration.nix
+++ b/hosts/laptop/configuration.nix
@@ -37,11 +37,15 @@
   programs.bash.shellAliases = {
     battery = "echo $(($(cat /sys/class/power_supply/BAT0/charge_now)*100/$(cat /sys/class/power_supply/BAT0/charge_full)))%";
     hibernate = "systemctl hibernate";
+    vpn-up = "sudo systemctl start wg-quick-wg0";
+    vpn-down = "sudo systemctl stop wg-quick-wg0";
   };
 
   programs.fish.shellAliases = {
     battery = "echo (math (cat /sys/class/power_supply/BAT0/charge_now) * 100 / (cat /sys/class/power_supply/BAT0/charge_full))%";
     hibernate = "systemctl hibernate";
+    vpn-up = "sudo systemctl start wg-quick-wg0";
+    vpn-down = "sudo systemctl stop wg-quick-wg0";
   };
 
   services.logind = {
@@ -58,6 +62,23 @@
   };
 
   home-manager.users.christian.custom.xmobarBattery = true;
+  home-manager.users.christian.custom.xmobarVpn = true;
+
+  # WireGuard — not started on boot, use `wg-quick up wg0` / `wg-quick down wg0`
+  # Private key must be placed at /etc/wireguard/wg0.key (mode 600, owned by root)
+  networking.wg-quick.interfaces.wg0 = {
+    autostart = false;
+    address = [ "10.67.40.2/32" ];
+    privateKeyFile = "/etc/wireguard/wg0.key";
+    peers = [
+      {
+        publicKey = "wg37lctIxY4qbcyjVDrEI4mahH2Bhgv+73djEjJSyww=";
+        endpoint = "vpn.soltermann.xyz:51820";
+        allowedIPs = [ "10.67.40.0/24" ];
+        persistentKeepalive = 25;
+      }
+    ];
+  };
 
   swapDevices = [
     {
diff --git a/modules/home/christian.nix b/modules/home/christian.nix
index 64403dc..377e8ef 100644
--- a/modules/home/christian.nix
+++ b/modules/home/christian.nix
@@ -9,6 +9,7 @@
   imports = [ ./nvim ];
 
   options.custom.xmobarBattery = lib.mkEnableOption "xmobar battery widget";
+  options.custom.xmobarVpn = lib.mkEnableOption "xmobar VPN indicator";
 
   config = {
     home.stateVersion = "25.11";
@@ -128,10 +129,13 @@
                    "-l", "red", "-m", "#4eb4fa", "-h", "green"]
                   600
               ''}
+              ${lib.optionalString config.custom.xmobarVpn ''
+                , Run Com "sh" ["-c", "ip link show wg0 2>/dev/null | grep -q 'UP' && echo '<fc=green>vpn: on</fc>' || echo '<fc=red>vpn: off</fc>'"] "vpn" 30
+              ''}
               ]
           , sepChar     = "%"
           , alignSep    = "}{"
-          , template    = "  %XMonadLog%  |  ${lib.optionalString config.custom.xmobarBattery "%battery% | "}%cpu% | %memory% | %wlan0%  }{%date%  "
+          , template    = "  %XMonadLog%  |  ${lib.optionalString config.custom.xmobarBattery "%battery% | "}${lib.optionalString config.custom.xmobarVpn "%vpn% | "}%cpu% | %memory% | %wlan0%  }{%date%  "
           }
       '';
     };