Add Systemd path as trigger for service

README.md

@@ -13,7 +13,7 @@ https://wiki.libreelec.tv/configuration/wireguard for reference)
 * `systemd-templates/` contains Systemd units templates for detecting VPN connection, and apply routes and DNS
   modifications.
 #### Installation
-* `install.sh` script copies Systemd templates to their destination, and enables trigger.
+* `install.sh` script copies Systemd templates to their destination, and enables trigger (Systemd path).
 
 ### TODO
-* Define a trigger
+* RAS

install.sh

@@ -13,11 +13,12 @@ echo "Copying Systemd units to system directory..."
 $sudo cp $run_directory/systemd-templates/set-ip-routes.service /etc/systemd/system/
 $sudo sed -i -e "s/PH_DNS/$dns_server/g" /etc/systemd/system/set-ip-routes.service
 $sudo sed -i -e "s:PH_NETWORK:$target_network:g" /etc/systemd/system/set-ip-routes.service
+$sudo cp $run_directory/systemd-templates/set-ip-routes.path /etc/systemd/system/
 
 echo "Reloading Systemd..."
 $sudo systemctl daemon-reload
-echo "Enabling timer (not starting it, either do it manually or reboot)..." # TODO replace by new trigger
-$sudo systemctl enable conf-sync.timer
+echo "Enabling path unit (not starting it, either do it manually or reboot)..."
+$sudo systemctl enable set-ip-routes.path
 
 echo "Finished install. Exiting..."
 exit 0

systemd-templates/set-ip-routes.path

@@ -0,0 +1,6 @@
+[Unit]
+Description=Detect WireGuard VPN activation
+
+[Path]
+PathExists=/sys/class/net/wg0
+Unit=set-ip-routes.service