Initial commit: Beszel fork with Domain Locker integration

agent/update.go

@@ -0,0 +1,127 @@
+package agent
+
+import (
+	"log"
+	"os"
+	"os/exec"
+	"runtime"
+
+	"github.com/henrygd/beszel/internal/ghupdate"
+)
+
+// restarter knows how to restart the beszel-agent service.
+type restarter interface {
+	Restart() error
+}
+
+type systemdRestarter struct{ cmd string }
+
+func (s *systemdRestarter) Restart() error {
+	// Only restart if the service is active
+	if err := exec.Command(s.cmd, "is-active", "beszel-agent.service").Run(); err != nil {
+		return nil
+	}
+	ghupdate.ColorPrint(ghupdate.ColorYellow, "Restarting beszel-agent.service via systemd…")
+	return exec.Command(s.cmd, "restart", "beszel-agent.service").Run()
+}
+
+type openRCRestarter struct{ cmd string }
+
+func (o *openRCRestarter) Restart() error {
+	if err := exec.Command(o.cmd, "beszel-agent", "status").Run(); err != nil {
+		return nil
+	}
+	ghupdate.ColorPrint(ghupdate.ColorYellow, "Restarting beszel-agent via OpenRC…")
+	return exec.Command(o.cmd, "beszel-agent", "restart").Run()
+}
+
+type openWRTRestarter struct{ cmd string }
+
+func (w *openWRTRestarter) Restart() error {
+	// https://openwrt.org/docs/guide-user/base-system/managing_services?s[]=service
+	if err := exec.Command("/etc/init.d/beszel-agent", "running").Run(); err != nil {
+		return nil
+	}
+	ghupdate.ColorPrint(ghupdate.ColorYellow, "Restarting beszel-agent via procd…")
+	return exec.Command("/etc/init.d/beszel-agent", "restart").Run()
+}
+
+type freeBSDRestarter struct{ cmd string }
+
+func (f *freeBSDRestarter) Restart() error {
+	if err := exec.Command(f.cmd, "beszel-agent", "status").Run(); err != nil {
+		return nil
+	}
+	ghupdate.ColorPrint(ghupdate.ColorYellow, "Restarting beszel-agent via FreeBSD rc…")
+	return exec.Command(f.cmd, "beszel-agent", "restart").Run()
+}
+
+func detectRestarter() restarter {
+	if path, err := exec.LookPath("systemctl"); err == nil {
+		return &systemdRestarter{cmd: path}
+	}
+	if path, err := exec.LookPath("rc-service"); err == nil {
+		return &openRCRestarter{cmd: path}
+	}
+	if path, err := exec.LookPath("procd"); err == nil {
+		return &openWRTRestarter{cmd: path}
+	}
+	if path, err := exec.LookPath("service"); err == nil {
+		if runtime.GOOS == "freebsd" {
+			return &freeBSDRestarter{cmd: path}
+		}
+	}
+	return nil
+}
+
+// Update checks GitHub for a newer release of beszel-agent, applies it,
+// fixes SELinux context if needed, and restarts the service.
+func Update(useMirror bool) error {
+	exePath, _ := os.Executable()
+
+	dataDir, err := GetDataDir()
+	if err != nil {
+		dataDir = os.TempDir()
+	}
+	updated, err := ghupdate.Update(ghupdate.Config{
+		ArchiveExecutable: "beszel-agent",
+		DataDir:           dataDir,
+		UseMirror:         useMirror,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	if !updated {
+		return nil
+	}
+
+	// make sure the file is executable
+	if err := os.Chmod(exePath, 0755); err != nil {
+		ghupdate.ColorPrintf(ghupdate.ColorYellow, "Warning: failed to set executable permissions: %v", err)
+	}
+	// set ownership to beszel:beszel if possible
+	if chownPath, err := exec.LookPath("chown"); err == nil {
+		if err := exec.Command(chownPath, "beszel:beszel", exePath).Run(); err != nil {
+			ghupdate.ColorPrintf(ghupdate.ColorYellow, "Warning: failed to set file ownership: %v", err)
+		}
+	}
+
+	// Fix SELinux context if necessary
+	if err := ghupdate.HandleSELinuxContext(exePath); err != nil {
+		ghupdate.ColorPrintf(ghupdate.ColorYellow, "Warning: SELinux context handling: %v", err)
+	}
+
+	// Restart service if running under a recognised init system
+	if r := detectRestarter(); r != nil {
+		if err := r.Restart(); err != nil {
+			ghupdate.ColorPrintf(ghupdate.ColorYellow, "Warning: failed to restart service: %v", err)
+			ghupdate.ColorPrint(ghupdate.ColorYellow, "Please restart the service manually.")
+		} else {
+			ghupdate.ColorPrint(ghupdate.ColorGreen, "Service restarted successfully")
+		}
+	} else {
+		ghupdate.ColorPrint(ghupdate.ColorYellow, "No supported init system detected; please restart manually if needed.")
+	}
+
+	return nil
+}