将 Google Drive 目录中的所有文件恢复为旧版本

最近，病毒加密了我的所有文件，不幸的是，谷歌备份和同步立即将文件的新版本（加密）上传到我的驱动器。 我知道我可以将单个文件恢复到以前的版本，但我的驱动器上大约有 30,000 个文件 - 这意味着我无法手动恢复所有这些文件... 我尝试使用 Apps 脚本，但找不到真正解决该问题的方法。

使用鲁本的帮助，我使用了中建议的代码CryptoLocker - 使用 Google Apps 脚本恢复云端硬盘文件版本 https://stackoverflow.com/q/42402713/1595451（小改动 - 我的代码运行该文件夹中的所有文件，包括子文件夹）以删除病毒攻击当天创建的所有文件版本。现在每个文件的版本都是病毒攻击之前的版本。

/** A function that delete all version of files in folder and subfolders that were made at the day of the virus attack and afterwards*/
function fixAllFilesInFolder(){ 
  var sh = SpreadsheetApp.getActiveSheet();
  var folderId = #enter folder Id here
  var folder = DriveApp.getFolderById(folderId); // I change the folder ID  here 
  handleFolder(folder, 0)   
}

/** A recursive function - delete all 'bad' versions of files in folder and calls itself with each of the subfolders to do the same*/
function handleFolder(folder, treeRank){
  Logger.log(String(treeRank) + ': ' + folder.getName());
  fixFolderFiles(folder)
  var subFolders = folder.getFolders(); 
  while (subFolders.hasNext()){
    subFolder = subFolders.next();
    handleFolder(subFolder, treeRank + 1)
  }

}

/** Delete all 'bad' versions of files in folder*/
function fixFolderFiles(folder){
  var files = folder.getFiles(); 
  while (files.hasNext()){
    file = files.next();
    deleteRevisions(file)
  }
}

/** Delete 'bad' version of a file*/
function deleteRevisions(file){  
  var fileId = file.getId();  
  var revisions = Drive.Revisions.list(fileId);
  var virusDate = new Date(2021, 3, 30) /** Put your attack date here!*/
  if (revisions.items && revisions.items.length > 1) 
    {    
    for (var i = 0; i < revisions.items.length; i++) 
      {
        if (i > 0){
          var revision = revisions.items[i];      
          var date = new Date(revision.modifiedDate);
          if(date.getTime() > virusDate.getTime()){
            return Drive.Revisions.remove(fileId, revision.id); 
          }
        }       
      }  
    }
  
  }

两个注意事项：

1. 不幸的是，Apps 脚本一次只能运行约 5 分钟，因此我必须从不同的文件夹运行代码多次（数十次）才能访问所有文件。
2. 即使您将文件恢复到以前的版本，我的文件的名称仍然以加密格式“.wrui”结尾。为了解决这个问题，我下载了所有文件并运行了一个 python 脚本（可能可以在 Apps 脚本中完成，但我觉得使用 python 更舒服）来更改所有名称。

from os import rename, listdir, walk
from os.path import join, isfile

ENCRYPTION = 'wrui' #Here should be the encryption format

#A function to rename a file without the encryption format - it makes sure that no file is named with the same name exactly. In that case, it adds '2' to the files name
def renameFile(address, origin_name, new_name):
    final_name = new_name
    
    if isfile(join(address, new_name)):
        name_list = new_name.split('.')
        name_list[-2] += '2'
        final_name = '.'.join(name_list)
        
    rename(join(address, origin_name), join(address, final_name))

#A function to rename all files in a specific folder
def purifyFolderFiles(folder_address):
    for file in listdir(folder_address):
        f_list = file.split('.')
        if len(f_list) > 1:
            if f_list[-1] == ENCRYPTION:
                renameFile(folder_address, file, '.'.join(f_list[:-1]))
                
            elif f_list[-2] == ENCRYPTION:
                if f_list[-3] == f_list[-1]:
                    renameFile(folder_address, file, '.'.join(f_list[:-2]))                
                else:
                    del f_list[-2]
                    renameFile(folder_address, file, '.'.join(f_list))

#This next few lines iterate through all the subfolders of the specific folder you put and use purifyFolderFiles to rename every file there
folder = #enter you folder address here
for path, subdirs, files in walk(folder):
    for name in subdirs:
        subdir_address = join(path, name)
        purifyFolderFiles(subdir_address)