Refactorized main entry function

- Moved constants to def.go
- Added acme close function (not used for now)
- Added robots.txt to prevent webmin panel being scanned by search engine

src/acme.go

@@ -41,6 +41,20 @@ func initACME() *acme.ACMEHandler {
 	return acme.NewACME("https://acme-v02.api.letsencrypt.org/directory", strconv.Itoa(port), sysdb, SystemWideLogger)
 }
 
+// Restart ACME handler and auto renewer
+func restartACMEHandler() {
+	SystemWideLogger.Println("Restarting ACME handler")
+	//Clos the current handler and auto renewer
+	acmeHandler.Close()
+	acmeAutoRenewer.Close()
+	acmeDeregisterSpecialRoutingRule()
+
+	//Reinit the handler with a new random port
+	acmeHandler = initACME()
+
+	acmeRegisterSpecialRoutingRule()
+}
+
 // create the special routing rule for ACME
 func acmeRegisterSpecialRoutingRule() {
 	SystemWideLogger.Println("Assigned temporary port:" + acmeHandler.Getport())
@@ -82,6 +96,12 @@ func acmeRegisterSpecialRoutingRule() {
 	}
 }
 
+// remove the special routing rule for ACME
+func acmeDeregisterSpecialRoutingRule() {
+	SystemWideLogger.Println("Removing ACME routing rule")
+	dynamicProxyRouter.RemoveRoutingRule("acme-autorenew")
+}
+
 // This function check if the renew setup is satisfied. If not, toggle them automatically
 func AcmeCheckAndHandleRenewCertificate(w http.ResponseWriter, r *http.Request) {
 	isForceHttpsRedirectEnabledOriginally := false