package main import ( "flag" "github.com/pboehm/ddns/connection" "log" "strings" ) func HandleErr(err error) { if err != nil { log.Fatal(err) } } var ( DdnsDomain string DdnsWebListenSocket string ) func init() { flag.StringVar(&DdnsDomain, "domain", "", "The subdomain which should be handled by DDNS") flag.StringVar(&DdnsWebListenSocket, "listen", ":8080", "Which socket should the web service use to bind itself") } func ValidateCommandArgs() { if DdnsDomain == "" { log.Fatal("You have to supply the domain via --domain=DOMAIN") } else if !strings.HasPrefix(DdnsDomain, ".") { // get the domain in the right format DdnsDomain = "." + DdnsDomain } } func PrepareForExecution() string { flag.Parse() ValidateCommandArgs() if len(flag.Args()) != 1 { usage() } cmd := flag.Args()[0] return cmd } func main() { cmd := PrepareForExecution() conn := connection.OpenConnection() defer conn.Close() switch cmd { case "backend": log.Printf("Starting PDNS Backend\n") RunBackend(conn) case "web": log.Printf("Starting Web Service\n") RunWebService(conn) default: usage() } } func usage() { log.Fatal("Usage: ./ddns [backend|web]") }