Commands: Add convert with two sub-commands (#3661)

* Add back convert-configs-to-protobuf command.

* Add convert-typedMessage-to-json command.

* Add -debug and -type arguments into convert.pb sub-command.

---------

Co-authored-by: nobody <nobody@nowhere.mars>

main/commands/all/convert/json.go

@@ -0,0 +1,71 @@
+package convert
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+
+	creflect "github.com/xtls/xray-core/common/reflect"
+	cserial "github.com/xtls/xray-core/common/serial"
+	"github.com/xtls/xray-core/main/commands/base"
+	"github.com/xtls/xray-core/main/confloader"
+)
+
+var cmdJson = &base.Command{
+	CustomFlags: true,
+	UsageLine:   "{{.Exec}} convert json [-type] [stdin:] [typedMessage file] ",
+	Short:       "Convert typedMessage to json",
+	Long: `
+Convert ONE typedMessage to json.
+
+Where typedMessage file need to be in the following format:
+
+{
+  "type": "xray.proxy.shadowsocks.Account",
+  "value": "CgMxMTEQBg=="
+}
+
+Arguments:
+
+	-t, -type
+		Inject type infomation.
+
+Examples:
+
+    {{.Exec}} convert json user.tmsg
+	`,
+	Run: executeTypedMessageToJson,
+}
+
+func executeTypedMessageToJson(cmd *base.Command, args []string) {
+
+	var injectTypeInfo bool
+	cmd.Flag.BoolVar(&injectTypeInfo, "t", false, "")
+	cmd.Flag.BoolVar(&injectTypeInfo, "type", false, "")
+	cmd.Flag.Parse(args)
+
+	if cmd.Flag.NArg() < 1 {
+		base.Fatalf("empty input list")
+	}
+
+	reader, err := confloader.LoadConfig(cmd.Flag.Arg(0))
+	if err != nil {
+		base.Fatalf(err.Error())
+	}
+
+	b, err := io.ReadAll(reader)
+	if err != nil {
+		base.Fatalf(err.Error())
+	}
+
+	tm := cserial.TypedMessage{}
+	if err = json.Unmarshal(b, &tm); err != nil {
+		base.Fatalf(err.Error())
+	}
+
+	if j, ok := creflect.MarshalToJson(&tm, injectTypeInfo); ok {
+		fmt.Println(j)
+	} else {
+		base.Fatalf("marshal TypedMessage to json failed")
+	}
+}