Add watchdog script written in Lua to the gluon-mesh-vpn-tunneldigger

package/gluon-mesh-vpn-tunneldigger/files/usr/bin/tunneldigger-watchdog

@@ -0,0 +1,44 @@
+#!/usr/bin/lua
+
+function restart_tunneldigger()
+	io.popen('logger -t tunneldigger-watchdog "Restarting Tunneldigger."')
+	os.execute("/etc/init.d/tunneldigger restart")
+end
+
+function read_pid_file()
+	local pidFile = io.open("/var/run/tunneldigger.mesh-vpn.pid", "r")
+	if not pidFile then
+		return nil
+	end
+	returnPid = pidFile:read("*l") 
+	io.close(pidFile)
+	return returnPid
+end
+
+function check_for_mesh_vpn_neighbours()
+	local handleBatctl = io.popen("batctl o", 'r')
+	if handleBatctl~=nil then
+		for line in handleBatctl:lines() do
+			if line:find('mesh%-vpn') then
+				handleBatctl.close()
+				return true
+			end
+		end
+	end
+	handleBatctl.close()
+	return false
+end
+
+local uci = require('simple-uci').cursor()
+if uci:get_bool('tunneldigger', 'mesh_vpn', 'enabled') then
+	if io.popen("pgrep tunneldigger"):read("*l") ~= readPidFile() then
+		io.popen('logger -t tunneldigger-watchdog "Process-Pid does not match with pid-File."')
+		restart_tunneldigger()
+		return
+	end
+	if check_for_mesh_vpn_neighbours() ~= true then
+		io.popen('logger -t tunneldigger-watchdog "No vpn-mesh neighbours found."')
+		restart_tunneldigger()
+		return
+	end
+end

package/gluon-mesh-vpn-tunneldigger/files/usr/lib/micron.d/tunneldigger-watchdog

@@ -0,0 +1 @@
+*/5 * * * * /usr/bin/tunneldigger-watchdog