feat: support to suspend

cmd/suspend.go

@@ -0,0 +1,47 @@
+/*
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Copyright (c) 2023, v2rayA Organization <team@v2raya.org>
+ */
+
+package cmd
+
+import (
+	"fmt"
+	"github.com/spf13/cobra"
+	"github.com/v2rayA/dae/cmd/internal"
+	"os"
+	"strconv"
+	"strings"
+	"syscall"
+)
+
+var (
+	suspendCmd = &cobra.Command{
+		Use: "suspend [pid]",
+		Run: func(cmd *cobra.Command, args []string) {
+			internal.AutoSu()
+			if len(args) == 0 {
+				_pid, err := os.ReadFile(PidFilePath)
+				if err != nil {
+					fmt.Println("Failed to read pid file:", err)
+					os.Exit(1)
+				}
+				args = []string{strings.TrimSpace(string(_pid))}
+			}
+			pid, err := strconv.Atoi(args[0])
+			if err != nil {
+				cmd.Help()
+				os.Exit(1)
+			}
+			if err = syscall.Kill(pid, syscall.SIGHUP); err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			fmt.Println("OK")
+		},
+	}
+)
+
+func init() {
+	rootCmd.AddCommand(suspendCmd)
+}