feat: Enhance file modification and backup mechanism for Cursor machine ID patch

patch_cursor_get_machine_id.py

@@ -150,6 +150,12 @@ def modify_main_js(main_path: str) -> bool:
         bool: 修改是否成功
     """
     try:
+        # 获取原始文件的权限和所有者信息
+        original_stat = os.stat(main_path)
+        original_mode = original_stat.st_mode
+        original_uid = original_stat.st_uid
+        original_gid = original_stat.st_gid
+
         with tempfile.NamedTemporaryFile(mode="w", delete=False) as tmp_file:
             with open(main_path, "r", encoding="utf-8") as main_file:
                 content = main_file.read()
@@ -169,6 +175,12 @@ def modify_main_js(main_path: str) -> bool:
         # 使用 shutil.copy2 保留文件权限
         shutil.copy2(main_path, main_path + ".old")
         shutil.move(tmp_path, main_path)
+
+        # 恢复原始文件的权限和所有者
+        os.chmod(main_path, original_mode)
+        if os.name != "nt":  # 在非Windows系统上设置所有者
+            os.chown(main_path, original_uid, original_gid)
+
         logger.info("文件修改成功")
         return True
 
@@ -179,8 +191,63 @@ def modify_main_js(main_path: str) -> bool:
         return False
 
 
-def patch_cursor_get_machine_id() -> None:
-    """主函数"""
+def backup_files(pkg_path: str, main_path: str) -> bool:
+    """
+    备份原始文件
+
+    Args:
+        pkg_path: package.json 文件路径（未使用）
+        main_path: main.js 文件路径
+
+    Returns:
+        bool: 备份是否成功
+    """
+    try:
+        # 只备份 main.js
+        if os.path.exists(main_path):
+            backup_main = f"{main_path}.bak"
+            shutil.copy2(main_path, backup_main)
+            logger.info(f"已备份 main.js: {backup_main}")
+
+        return True
+    except Exception as e:
+        logger.error(f"备份文件失败: {str(e)}")
+        return False
+
+
+def restore_backup_files(pkg_path: str, main_path: str) -> bool:
+    """
+    恢复备份文件
+
+    Args:
+        pkg_path: package.json 文件路径（未使用）
+        main_path: main.js 文件路径
+
+    Returns:
+        bool: 恢复是否成功
+    """
+    try:
+        # 只恢复 main.js
+        backup_main = f"{main_path}.bak"
+        if os.path.exists(backup_main):
+            shutil.copy2(backup_main, main_path)
+            logger.info(f"已恢复 main.js")
+            return True
+
+        logger.error("未找到备份文件")
+        return False
+    except Exception as e:
+        logger.error(f"恢复备份失败: {str(e)}")
+        return False
+
+
+def patch_cursor_get_machine_id(restore_mode=False) -> None:
+    """
+    主函数
+
+    Args:
+        restore_mode: 是否为恢复模式
+    """
     logger.info("开始执行脚本...")
 
     try:
@@ -191,6 +258,14 @@ def patch_cursor_get_machine_id() -> None:
         if not check_system_requirements(pkg_path, main_path):
             sys.exit(1)
 
+        if restore_mode:
+            # 恢复备份
+            if restore_backup_files(pkg_path, main_path):
+                logger.info("备份恢复完成")
+            else:
+                logger.error("备份恢复失败")
+            return
+
         # 获取版本号
         try:
             with open(pkg_path, "r", encoding="utf-8") as f:
@@ -207,6 +282,11 @@ def patch_cursor_get_machine_id() -> None:
 
         logger.info("版本检查通过，准备修改文件")
 
+        # 备份文件
+        if not backup_files(pkg_path, main_path):
+            logger.error("文件备份失败，终止操作")
+            sys.exit(1)
+
         # 修改文件
         if not modify_main_js(main_path):
             sys.exit(1)