finish inverse role server support for webtunnel

main/commands/all/engineering/generateRandomData/generateRandomData.go

@@ -0,0 +1,65 @@
+package generateRandomData
+
+import (
+	"crypto/rand"
+	"encoding/base64"
+	"flag"
+	"fmt"
+
+	"github.com/v2fly/v2ray-core/v5/main/commands/all/engineering"
+	"github.com/v2fly/v2ray-core/v5/main/commands/base"
+)
+
+//go:generate go run github.com/v2fly/v2ray-core/v5/common/errors/errorgen
+
+var length *int
+
+var cmdGenerateRandomData = &base.Command{
+	UsageLine: "{{.Exec}} engineering generate-random-data",
+	Short:     "generate random data and output as base64",
+	Long: `
+Generate random data of specified length and output as base64 encoded string.
+
+Usage:
+	{{.Exec}} engineering generate-random-data -length <bytes>
+
+Options:
+	-length <bytes>
+		The number of random bytes to generate (required)
+
+Example:
+	{{.Exec}} engineering generate-random-data -length 32
+`,
+	Flag: func() flag.FlagSet {
+		fs := flag.NewFlagSet("", flag.ExitOnError)
+		length = fs.Int("length", 0, "number of random bytes to generate")
+		return *fs
+	}(),
+	Run: func(cmd *base.Command, args []string) {
+		err := cmd.Flag.Parse(args)
+		if err != nil {
+			base.Fatalf("failed to parse flags: %v", err)
+		}
+
+		if *length <= 0 {
+			base.Fatalf("length must be a positive integer, got: %d", *length)
+		}
+
+		// Generate random data
+		randomData := make([]byte, *length)
+		_, err = rand.Read(randomData)
+		if err != nil {
+			base.Fatalf("failed to generate random data: %v", err)
+		}
+
+		// Encode to base64
+		encoded := base64.StdEncoding.EncodeToString(randomData)
+
+		// Output the result
+		fmt.Println(encoded)
+	},
+}
+
+func init() {
+	engineering.AddCommand(cmdGenerateRandomData)
+}