began adding macos service/daemon

netclient/daemon/systemd.go

@@ -0,0 +1,150 @@
+package daemon
+
+import (
+	//"github.com/davecgh/go-spew/spew"
+
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/gravitl/netmaker/netclient/ncutils"
+)
+
+func SetupSystemDDaemon(network string) error {
+	if ncutils.IsWindows() {
+		return nil
+	}
+	dir, err := filepath.Abs(filepath.Dir(os.Args[0]))
+	if err != nil {
+		return err
+	}
+	binarypath := dir + "/netclient"
+
+	_, err = os.Stat("/etc/netclient")
+	if os.IsNotExist(err) {
+		os.Mkdir("/etc/netclient", 744)
+	} else if err != nil {
+		log.Println("couldnt find or create /etc/netclient")
+		return err
+	}
+
+	if !ncutils.FileExists("/usr/local/bin/netclient") {
+		os.Symlink("/etc/netclient/netclient", "/usr/local/bin/netclient")
+	}
+	if !ncutils.FileExists("/etc/netclient/netclient") {
+		_, err = ncutils.Copy(binarypath, "/etc/netclient/netclient")
+		if err != nil {
+			log.Println(err)
+			return err
+		}
+	}
+
+	systemservice := `[Unit]
+Description=Network Check
+Wants=netclient.timer
+
+[Service]
+Type=simple
+ExecStart=/etc/netclient/netclient checkin -n %i
+
+[Install]
+WantedBy=multi-user.target
+`
+
+	systemtimer := `[Unit]
+Description=Calls the Netmaker Mesh Client Service
+
+`
+	systemtimer = systemtimer + "Requires=netclient@" + network + ".service"
+
+	systemtimer = systemtimer +
+		`
+
+[Timer]
+
+`
+	systemtimer = systemtimer + "Unit=netclient@" + network + ".service"
+
+	systemtimer = systemtimer +
+		`
+
+OnCalendar=*:*:0/30
+
+[Install]
+WantedBy=timers.target
+`
+
+	servicebytes := []byte(systemservice)
+	timerbytes := []byte(systemtimer)
+
+	if !ncutils.FileExists("/etc/systemd/system/netclient@.service") {
+		err = ioutil.WriteFile("/etc/systemd/system/netclient@.service", servicebytes, 0644)
+		if err != nil {
+			log.Println(err)
+			return err
+		}
+	}
+
+	if !ncutils.FileExists("/etc/systemd/system/netclient-" + network + ".timer") {
+		err = ioutil.WriteFile("/etc/systemd/system/netclient-"+network+".timer", timerbytes, 0644)
+		if err != nil {
+			log.Println(err)
+			return err
+		}
+	}
+
+	_, _ = ncutils.RunCmd("systemctl enable netclient@.service", true)
+	_, _ = ncutils.RunCmd("systemctl daemon-reload", true)
+	_, _ = ncutils.RunCmd("systemctl enable netclient-"+network+".timer", true)
+	_, _ = ncutils.RunCmd("systemctl start netclient-"+network+".timer", true)
+	return nil
+}
+
+func RemoveSystemDServices(network string) error {
+	//sysExec, err := exec.LookPath("systemctl")
+	if !ncutils.IsWindows() {
+		fullremove, err := isOnlyService(network)
+		if err != nil {
+			log.Println(err)
+		}
+
+		if fullremove {
+			_, err = ncutils.RunCmd("systemctl disable netclient@.service", true)
+		}
+		_, _ = ncutils.RunCmd("systemctl daemon-reload", true)
+
+		if ncutils.FileExists("/etc/systemd/system/netclient-" + network + ".timer") {
+			_, _ = ncutils.RunCmd("systemctl disable netclient-"+network+".timer", true)
+		}
+		if fullremove {
+			if ncutils.FileExists("/etc/systemd/system/netclient@.service") {
+				err = os.Remove("/etc/systemd/system/netclient@.service")
+			}
+		}
+		if ncutils.FileExists("/etc/systemd/system/netclient-" + network + ".timer") {
+			err = os.Remove("/etc/systemd/system/netclient-" + network + ".timer")
+		}
+		if err != nil {
+			log.Println("Error removing file. Please investigate.")
+			log.Println(err)
+		}
+		_, _ = ncutils.RunCmd("systemctl daemon-reload", true)
+		_, _ = ncutils.RunCmd("systemctl reset-failed", true)
+	}
+	return nil
+}
+
+func isOnlyService(network string) (bool, error) {
+	isonly := false
+	files, err := filepath.Glob("/etc/netclient/netconfig-*")
+	if err != nil {
+		return isonly, err
+	}
+	count := len(files)
+	if count == 0 {
+		isonly = true
+	}
+	return isonly, err
+
+}