server: fix setuid/guid

app/server/server.go

@@ -207,7 +207,7 @@ func (srv *Server) Build() error {
 			return err
 		}
 		rundir := filepath.Dir(srv.conf.Runpath)
-		srv.logg.Infof("Creating run directory %s", rundir)
+		//srv.logg.Infof("Creating run directory %s", rundir)
 		err = os.MkdirAll(rundir, 0750)
 		if err != nil {
 			return err
@@ -259,7 +259,6 @@ func (srv *Server) Build() error {
 	if err != nil {
 		return err
 	}
-
 	cert, key := []byte(srv.conf.X509Cert), []byte(srv.conf.X509Key)
 	addrinfo := fmt.Sprintf("%s:%d", srv.conf.Service.Address, srv.conf.Service.Port)
 	listener, err := CreateTLSListener(addrinfo, cert, key)
@@ -270,15 +269,16 @@ func (srv *Server) Build() error {
 
 	if cuid64 == 0 {
 		// Change effective user and group
-		err = syscall.Setuid(euid)
-		if err != nil {
-			return err
-		}
 		err = syscall.Setgid(egid)
 		if err != nil {
 			return err
 		}
+		err = syscall.Setuid(euid)
+		if err != nil {
+			return err
+		}
 	}
+	//return fmt.Errorf("Debug break")
 
 	uidstr := strconv.FormatInt(int64(syscall.Geteuid()), 10)
 	usr, err := user.LookupId(uidstr)