text: # encoding: utf8
  #
  # This file is part of the Neurons project.
  # Copyright (c), Arskom Ltd. (arskom.com.tr),
  #                Burak Arslan <burak.arslan@arskom.com.tr>.
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are met:
  #
  # * Redistributions of source code must retain the above copyright notice, this
  #   list of conditions and the following disclaimer.
  #
  # * Redistributions in binary form must reproduce the above copyright notice,
  #   this list of conditions and the following disclaimer in the documentation
  #   and/or other materials provided with the distribution.
  #
  # * Neither the name of the Arskom Ltd., the neurons project nor the names of
  #   its its contributors may be used to endorse or promote products derived from
  #   this software without specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  #
  
  
  from twisted.web.static import File
  from twisted.web.resource import ForbiddenResource
  from twisted.python.filepath import InsecurePath
  
  from spyne.server.twisted.http import get_twisted_child_with_default
  from spyne.util.six.moves.urllib.parse import quote
  
  
  def TCheckedFile(disallowed_exts, url):
      class CheckedFile(File):
          def __init__(self, *args, **kwargs):
              File.__init__(self, *args, **kwargs)
  
              self.prepath = quote(url).encode('ascii')
  
          def getChildWithDefault(self, path, request):
              return get_twisted_child_with_default(self, path, request)
  
          def child(self, path):
              retval = File.child(self, path)
  
              if path.rsplit(".", 1)[-1] in disallowed_exts:
                  raise InsecurePath("%r is disallowed." % (path,))
  
              return retval
  
      return CheckedFile
  
  
  def TStaticFile(disallowed_exts, url):
      class StaticFile(TCheckedFile(disallowed_exts, url)):
          def directoryListing(self):
              return ForbiddenResource()
  
      return StaticFile
  