feat(keyboard): update keyboard layouts and key display mappings for multiple languages

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>

internal/hidrpc/hidrpc.go

@@ -3,6 +3,7 @@ package hidrpc
 import "fmt"
 
 type Handler interface {
+	HandleHandshake(version byte) error
 	HandleKeyboardReport(modifier byte, keys []byte) error
 	HandleKeypressReport(key byte, press bool) error
 	HandleKeypressKeepAlive() error
@@ -25,6 +26,11 @@ func (s *Server) HandleMessage(data []byte) error {
 	}
 
 	switch msg.Type {
+	case MessageTypeHandshake:
+		if len(msg.Data) < 1 {
+			return fmt.Errorf("invalid handshake length: %d", len(msg.Data))
+		}
+		return s.handler.HandleHandshake(msg.Data[0])
 	case MessageTypeKeyboardReport:
 		if len(msg.Data) < 7 {
 			return fmt.Errorf("invalid keyboard report length: %d", len(msg.Data))

internal/hidrpc/message.go

@@ -30,6 +30,10 @@ func MarshalKeyboardReport(modifier byte, keys []byte) []byte {
 	return data
 }
 
+func MarshalHandshake(version byte) []byte {
+	return []byte{MessageTypeHandshake, version}
+}
+
 func MarshalKeypressReport(key byte, press bool) []byte {
 	data := make([]byte, 3)
 	data[0] = MessageTypeKeypressReport

internal/usbgadget/hid_keyboard.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"os"
+	"os/exec"
 	"reflect"
 	"strings"
 	"time"
@@ -211,15 +212,16 @@ func (u *UsbGadget) OpenKeyboardHidFile() error {
 }
 
 func (u *UsbGadget) keyboardWriteHidFile(data []byte) error {
-	if err := u.openKeyboardHidFile(); err != nil {
-		return err
+	var parts []string
+	for _, b := range data {
+		parts = append(parts, fmt.Sprintf("\\x%02x", b))
 	}
+	hexString := strings.Join(parts, "")
 
-	_, err := u.keyboardHidFile.Write(data)
+	cmd := exec.Command("sh", "-c", fmt.Sprintf("echo -n -e '%s' > /dev/hidg0", hexString))
+	err := cmd.Run()
 	if err != nil {
 		u.logWithSupression("keyboardWriteHidFile", 100, u.log, err, "failed to write to hidg0")
-		u.keyboardHidFile.Close()
-		u.keyboardHidFile = nil
 		return err
 	}
 	u.resetLogSuppressionCounter("keyboardWriteHidFile")