扭曲蟒蛇ISFTPServer openDirectory

Question

我一直在通過扭曲來製作一個sftp服務器，並且無法從我的ISFTPServer.openDirectory函數返回任何信息。

EX

class MySFTPAdapter: 
    implements(filetransfer.ISFTPServer) 
    def openDirectory(self, path): 
     return ('test', 'drwxrwxrwx 1 ab  cd    0 Apr 23 15:41 test', {'size': 0, 'uid': 1000, 'gid': 1000, 'mtime': 1366746069L, 'atime': 1366746069L, 'permissions': 511}) 

與

Traceback (most recent call last): 
    File "sftpserver.py", line 435, in dataReceived 
    f(data) 
    File "/usr/lib/python2.6/dist-packages/twisted/conch/ssh/filetransfer.py", line 265, in packet_OPENDIR 
    d.addCallback(self._cbOpenDirectory, requestId) 
    File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 260, in addCallback 
    callbackKeywords=kw) 
    File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 249, in addCallbacks 
    self._runCallbacks() 
--- <exception caught here> --- 
    File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 441, in _runCallbacks 
    self.result = callback(self.result, *args, **kw) 
    File "/usr/lib/python2.6/dist-packages/twisted/conch/ssh/filetransfer.py", line 269, in _cbOpenDirectory 
    handle = str(hash(dirObj)) 
exceptions.TypeError: unhashable type: 'dict' 

的異常幀當地人失敗;

{'val': ('test', 'drwxrwxrwx 1 ab  cd    0 Apr 23 15:41 test', {'size': 0, 'uid': 1000, 'gid': 1000, 'mtime': 1366746069L, 'atime': 1366746069L, 'permissions': 511})} 

任何人都有一個想法怎麼了，我做錯了什麼？

Answer 1

你實現openDirectory：

def openDirectory(self, path): 
    return ('test', 
      'drwxrwxrwx 1 ab  cd    0 Apr 23 15:41 test', 
      {'size': 0, 'uid': 1000, 'gid': 1000, 'mtime': 1366746069L, 
      'atime': 1366746069L, 'permissions': 511}) 

返回三個元素的元組。從接口文檔：

This method returns an iterable object that has a close() method,                  
    or a Deferred that is called back with same.                       

    The close() method is called when the client is finished reading                  
    from the directory. At this point, the iterable will no longer                   
    be used.                                

    The iterable should return triples of the form (filename,                    
    longname, attrs) or Deferreds that return the same. The                    
    sequence must support __getitem__, but otherwise may be any                    
    'sequence-like' object.              

你返回的元組聽起來像一個迭代器元素這裏正在討論的，而不是整個返回值。

試着這麼做：

def openDirectory(self, path): 
    yield ('test', 
      'drwxrwxrwx 1 ab  cd    0 Apr 23 15:41 test', 
      {'size': 0, 'uid': 1000, 'gid': 1000, 'mtime': 1366746069L, 
      'atime': 1366746069L, 'permissions': 511}) 

現在你有一臺發電機 - 這是一個接近方法的迭代器 - 它的元素，如文檔中描述的三元組。