ddns/ddns.go

59 lines
1.5 KiB
Go

package main
import (
"flag"
"github.com/pboehm/ddns/backend"
"github.com/pboehm/ddns/config"
"github.com/pboehm/ddns/hosts"
"github.com/pboehm/ddns/web"
"log"
"strings"
)
var serviceConfig *config.Config = &config.Config{}
func init() {
flag.StringVar(&serviceConfig.Domain, "domain", "",
"The subdomain which should be handled by DDNS")
flag.StringVar(&serviceConfig.Listen, "listen", ":8080",
"Which socket should the web service use to bind itself")
flag.StringVar(&serviceConfig.RedisHost, "redis", ":6379",
"The Redis socket that should be used")
flag.StringVar(&serviceConfig.SOAFqdn, "soa_fqdn", "",
"The FQDN of the DNS server which is returned as a SOA record")
flag.IntVar(&serviceConfig.HostExpirationDays, "expiration-days", 10,
"The number of days after a host is released when it is not updated")
flag.BoolVar(&serviceConfig.Verbose, "verbose", false,
"Be more verbose")
}
func validateCommandArgs() {
if serviceConfig.Domain == "" {
log.Fatal("You have to supply the domain via --domain=DOMAIN")
} else if !strings.HasPrefix(serviceConfig.Domain, ".") {
// get the domain in the right format
serviceConfig.Domain = "." + serviceConfig.Domain
}
if serviceConfig.SOAFqdn == "" {
log.Fatal("You have to supply the server FQDN via --soa_fqdn=FQDN")
}
}
func main() {
flag.Parse()
validateCommandArgs()
redis := hosts.NewRedisBackend(serviceConfig)
defer redis.Close()
lookup := backend.NewHostLookup(serviceConfig, redis)
web.NewWebService(serviceConfig, redis, lookup).Run()
}