M main.go → main.go

@@ -343,25 +343,52 @@ url.Uses++
 	_ = writeURL(url)
 }
 
+const helpstring = ` [options]
+options:
+    -i[str]
+    	str is the address (or hostname thereof) the server will to listen to.
+    	if -i option is given with no str, the server will listen on all
+    	possible addresses.
+       	if this option is not present, 127.0.0.1 will be used by default
+    -p[num]
+    	num is the port number to use for http traffic
+`
+
+func parseArgs(iface, port *string) {
+	for _,arg := range os.Args[1:] {
+		if len(arg)>1 && arg[0]=='-' {
+			switch arg[1] {
+			case 'i':
+				*iface=arg[2:]
+				continue
+			case 'p':
+				*port=arg[2:]
+				continue
+			}
+		}
+		println("usage: "+os.Args[0]+helpstring)
+		os.Exit(1)
+	}
+}
+
 func main() {
 	var (
-		port   string = ":8088"
+		iface  string = "127.0.0.1"
+		port   string = "8088"
 		err    error
 		server http.Server
 	)
 
-	if len(os.Args) == 2 {
-		port = ":" + os.Args[1]
-	}
+	parseArgs(&iface,&port)
 
-	println("Starting server on port " + port)
+	println("Starting server on " + iface + ":" + port)
 
 	openFiles()
 
 	http.HandleFunc("/", httpHandler)
 
 	server = http.Server{
-		Addr:    port,
+		Addr:    iface + ":" + port,
 		Handler: nil,
 	}