mygpo/api/advanced/auth.py

   1 #
   2 # This file is part of my.gpodder.org.
   3 #
   4 # my.gpodder.org is free software: you can redistribute it and/or modify it
   5 # 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 (at your
   7 # option) any later version.
   8 #
   9 # my.gpodder.org is distributed in the hope that it will be useful, but
  10 # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  11 # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
  12 # License for more details.
  13 #
  14 # You should have received a copy of the GNU Affero General Public License
  15 # along with my.gpodder.org. If not, see <http://www.gnu.org/licenses/>.
  16 #
  17
  18 from mygpo.api.basic_auth import require_valid_user, check_username
  19 from django.contrib import auth
  20 from django.http import HttpResponse
  21 from mygpo.api.httpresponse import JsonResponse
  22 from django.shortcuts import get_object_or_404
  23 from mygpo.api.models import Device
  24 from django.utils.translation import ugettext as _
  25 from datetime import datetime, timedelta
  26 from django.views.decorators.csrf import csrf_exempt
  27
  28
  29 @csrf_exempt
  30 @require_valid_user
  31 @check_username
  32 def login(request, username, device_uid):
  33     """
  34     authenticates the user with regular http basic auth
  35     the device is created if it doesn't already exist
  36     """
  37
  38     d, created = Device.objects.get_or_create(user=request.user, uid=device_uid, defaults = {'type': 'other', 'name': _('New Device')})
  39
  40     request.session['device'] = device_uid
  41     request.session.set_expiry(datetime.now()+timedelta(days=365))
  42
  43     # the user has been logged in at this point already
  44     r = {'valid': True}
  45     return JsonResponse(r)
  46
  47
  48 @csrf_exempt
  49 @check_username
  50 def logout(request, username, device_uid):
  51     """
  52     logs out the user. does nothing if he wasn't logged in
  53     """
  54     auth.logout(request)
  55
  56     return HttpResponse()
  57
  58
  59 @csrf_exempt
  60 def validate(request, username, device_uid):
  61     """
  62     checks if the client has been authenticated for the given useru
  63     """
  64     if not request.user.is_authenticated():
  65         return JsonResponse({'valid': False, 'reason': 'Client not authenticated'})
  66
  67     if request.user.username != username:
  68         return JsonResponse({'valid': False, 'reason': 'Client authenticated for different username: %s' % request.user.username})
  69
  70     get_object_or_404(Device, user=request.user, uid=device_uid)
  71
  72     # skip if client isn't authenticated for any device
  73     if request.session['device'] and (device_uid != request.session['device']):
  74         return JsonResponse({'valid': False, 'reason': 'Client authenticated for different device: %s' % request.session['device']})
  75
  76     return JsonResponse({'valid': True})
  77
  78