add listen address to the config

archetype/config.go

@@ -17,6 +17,7 @@ type Config struct {
 	StaticShowHTML    bool    // whether to show html files in the FileManager
 	StaticMaxUploadMB int64   // max size in MB of files uploaded via FileManager
 	AssetRoot         string  // root of Nirvash dist files (CSS, images)
+	ListenAddress     string  // address the webserver listens on
 	Plugins           map[string]interface{}
 }
 
@@ -66,6 +67,7 @@ func (self *Config) SetAdapter(adapter string) {
 
 func (self *Config) IsNull() bool {
 	// zero-values for StaticShowHTML, StaticShowHidden, and StaticMaxUploadMB are valid
+	// zero-value for ListenAddress is also OK, falls back on 127.0.0.1:8080
 	return self.Adapter == nil || len(self.Root) == 0 || len(self.StaticRoot) == 0 || len(self.AssetRoot) == 0
 }
 
@@ -112,6 +114,11 @@ func (self *Config) RunWizard() {
 	ensureNonEmptyOption(&inputBuf)
 	self.AssetRoot = inputBuf
 
+	inputBuf = ""
+	fmt.Printf("nirvash listen address? ")
+	ensureNonEmptyOption(&inputBuf)
+	self.ListenAddress = inputBuf
+
 	inputBuf = ""
 	fmt.Printf("plugins? (not implemented yet) ")
 	ensureNonEmptyOption(&inputBuf)
@@ -169,6 +176,7 @@ func writeConfig(cfg *Config, configFile string) error {
 	f.WriteString("staticShowHidden=" + strconv.FormatBool(cfg.StaticShowHidden) + "\n")
 	f.WriteString("staticMaxUploadMB=" + strconv.FormatInt(cfg.StaticMaxUploadMB, 10) + "\n")
 	f.WriteString("assetRoot=" + cfg.AssetRoot + "\n")
+	f.WriteString("listenAddress=" + cfg.ListenAddress + "\n")
 	f.WriteString("adapter=" + cfg.Adapter.Name() + "\n")
 	f.WriteString("plugins=\n")
 	return nil
@@ -209,6 +217,8 @@ func parseConfig(configFile string) *Config {
 			cfg.StaticMaxUploadMB, _ = strconv.ParseInt(v, 10, 64)
 		case "assetRoot":
 			cfg.AssetRoot = v
+		case "listenAddress":
+			cfg.ListenAddress = v
 		case "plugins":
 			// not implemented
 		case "adapter":

nirvash.go

@@ -407,5 +407,9 @@ func main() {
 			http.MethodGet,
 			udb,
 			"/login"))
-	http.ListenAndServe(":8080", rtr)
+
+	if cfg.ListenAddress == "" {
+		cfg.ListenAddress = "127.0.0.1:8080"
+	}
+	http.ListenAndServe(cfg.ListenAddress, rtr)
 }