filex/uploadhandler.py

   1 from functools import wraps
   2
   3 from django.core.files.uploadedfile import UploadedFile
   4 from django.core.files.uploadhandler import FileUploadHandler, StopUpload, StopFutureHandlers
   5 from django.views.decorators.csrf import csrf_exempt, csrf_protect
   6
   7 from filex.ftp import FTPOperation
   8
   9
  10 class FtpUploadHandler(FileUploadHandler):
  11     ftp = None
  12     url = None
  13     tmp_url = None
  14
  15     def new_file(self, file_name, *args, **kwargs):
  16         super(FtpUploadHandler, self).new_file(file_name, *args, **kwargs)
  17
  18         # TODO limit to selected request.path
  19         # TODO validate host and path
  20         host = self.request.GET.get('host')
  21         path = self.request.GET.get('path')
  22
  23         if self.request.user.is_anonymous() or not host or not path:
  24             raise StopUpload(connection_reset=True)
  25
  26         if self.ftp is None:
  27             self.ftp = FTPOperation(self.request.session['proxy'], self.chunk_size)
  28
  29         self.url = 'gsiftp://' + host + path + self.file_name
  30         self.tmp_url = 'gsiftp://' + host + path + self.file_name + '.part'
  31
  32         self.ftp.put(self.tmp_url)
  33
  34         StopFutureHandlers()
  35
  36     def receive_data_chunk(self, raw_data, start):
  37         self.ftp.stream.put(raw_data)
  38
  39     def file_complete(self, file_size):
  40         # signal end of data and wait for finish
  41         self.ftp.stream.put(None)
  42         self.ftp.wait()
  43
  44         self.ftp.move(self.tmp_url, self.url)
  45
  46         return UploadedFile(name=self.file_name, size=file_size, charset=self.charset,
  47                             content_type=self.content_type, content_type_extra=self.content_type_extra)
  48
  49
  50 def with_ftp_upload_handler(view_func):
  51     @wraps(view_func)
  52     def wrapped_view(request, *args, **kwargs):
  53         request.upload_handlers = [FtpUploadHandler(request)]
  54
  55         return csrf_protect(view_func)(request, *args, **kwargs)
  56
  57     return csrf_exempt(wrapped_view)