mediagoblin/tools/request.py

   1 # GNU MediaGoblin -- federated, autonomous media hosting
   2 # Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
   3 #
   4 # This program is free software: you can redistribute it and/or modify
   5 # it under the terms of the GNU Affero General Public License as published by
   6 # the Free Software Foundation, either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU Affero General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU Affero General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 import json
  18 import logging
  19 from mediagoblin.db.models import User
  20
  21 _log = logging.getLogger(__name__)
  22
  23
  24 # MIME-Types
  25 form_encoded = "application/x-www-form-urlencoded"
  26 json_encoded = "application/json"
  27
  28 def setup_user_in_request(request):
  29     """
  30     Examine a request and tack on a request.user parameter if that's
  31     appropriate.
  32     """
  33     if 'user_id' not in request.session:
  34         request.user = None
  35         return
  36
  37     request.user = User.query.get(request.session['user_id'])
  38
  39     if not request.user:
  40         # Something's wrong... this user doesn't exist?  Invalidate
  41         # this session.
  42         _log.warn("Killing session for user id %r", request.session['user_id'])
  43         request.session.delete()
  44
  45 def decode_request(request):
  46     """ Decodes a request based on MIME-Type """
  47     data = request.get_data()
  48
  49     if request.content_type == json_encoded:
  50         data = json.loads(data)
  51     elif request.content_type == form_encoded:
  52         data = request.form
  53     else:
  54         data = ""
  55     return data