platform: Add boxdd

experimental/boxdd/cmd_service_linux.go

@@ -0,0 +1,102 @@
+package main
+
+import (
+	"os/exec"
+	"strings"
+
+	"github.com/sagernet/sing-box/log"
+	E "github.com/sagernet/sing/common/exceptions"
+
+	"github.com/spf13/cobra"
+)
+
+const (
+	defaultServiceWorkingDirectory = "/var/lib/sing-box-daemon"
+	serviceUnitName                = serviceName + ".service"
+)
+
+var commandServiceRestart = &cobra.Command{
+	Use:   "restart",
+	Short: "Restart the system service",
+	Args:  cobra.NoArgs,
+	Run: func(command *cobra.Command, args []string) {
+		err := serviceRestart()
+		if err != nil {
+			log.Fatal(E.Cause(err, "restart service"))
+		}
+	},
+}
+
+func addPlatformServiceCommands() {
+	commandService.AddCommand(commandServiceRestart)
+}
+
+func runSystemctl(arguments ...string) error {
+	output, err := exec.Command("systemctl", arguments...).CombinedOutput()
+	if err != nil {
+		message := strings.TrimSpace(string(output))
+		if message == "" {
+			return E.Cause(err, "systemctl ", strings.Join(arguments, " "))
+		}
+		return E.New("systemctl ", strings.Join(arguments, " "), ": ", message)
+	}
+	return nil
+}
+
+func serviceStart() error {
+	return runSystemctl("start", serviceUnitName)
+}
+
+func serviceStop() error {
+	installed, err := serviceInstalled()
+	if err != nil {
+		return err
+	}
+	if !installed {
+		log.Info("service not installed")
+		return nil
+	}
+	return runSystemctl("stop", serviceUnitName)
+}
+
+func serviceRestart() error {
+	return runSystemctl("restart", serviceUnitName)
+}
+
+func serviceInstalled() (bool, error) {
+	loadState, err := systemctlProperty("LoadState")
+	if err != nil {
+		return false, err
+	}
+	return loadState != "" && loadState != "not-found", nil
+}
+
+func systemctlProperty(property string) (string, error) {
+	output, err := exec.Command("systemctl", "show", "--property="+property, "--value", serviceUnitName).CombinedOutput()
+	if err != nil {
+		message := strings.TrimSpace(string(output))
+		if message == "" {
+			return "", E.Cause(err, "query system service")
+		}
+		return "", E.New("query system service: ", message)
+	}
+	return strings.TrimSpace(string(output)), nil
+}
+
+func serviceStatus() (*serviceStatusResult, error) {
+	installed, err := serviceInstalled()
+	if err != nil {
+		return nil, err
+	}
+	if !installed {
+		return &serviceStatusResult{exitCode: 3, description: "not installed"}, nil
+	}
+	activeState, err := systemctlProperty("ActiveState")
+	if err != nil {
+		return nil, err
+	}
+	if activeState == "active" {
+		return &serviceStatusResult{exitCode: 0, description: "running"}, nil
+	}
+	return &serviceStatusResult{exitCode: 2, description: "stopped"}, nil
+}