forum_modules/openidauth/consumer.py

   1 import re
   2
   3 from django.utils.html import escape
   4 from django.http import get_host
   5
   6 from forum.authentication.base import AuthenticationConsumer, InvalidAuthentication
   7 import settings
   8
   9 from openid.yadis import xri
  10 from openid.consumer.consumer import Consumer, SUCCESS, CANCEL, FAILURE, SETUP_NEEDED
  11 from openid.consumer.discover import DiscoveryFailure
  12 from openid.extensions.sreg import SRegRequest, SRegResponse
  13 from openid.extensions.ax import FetchRequest as AXFetchRequest, AttrInfo, FetchResponse as AXFetchResponse
  14 from django.utils.translation import ugettext as _
  15
  16 from store import OsqaOpenIDStore
  17
  18 class OpenIdAbstractAuthConsumer(AuthenticationConsumer):
  19
  20     dataype2ax_schema = {
  21         #'username': 'http://axschema.org/namePerson/friendly',
  22         'email': 'http://axschema.org/contact/email',
  23         #'web': 'http://axschema.org/contact/web/default',
  24         #'firstname': 'http://axschema.org/namePerson/first',
  25         #'lastname': 'http://axschema.org/namePerson/last',
  26         #'birthdate': 'http://axschema.org/birthDate',
  27     }
  28
  29     def get_user_url(self, request):
  30         try:
  31             return request.POST['openid_identifier']
  32         except:
  33             raise NotImplementedError()
  34
  35     def prepare_authentication_request(self, request, redirect_to):
  36         if not redirect_to.startswith('http://') or redirect_to.startswith('https://'):
  37                     redirect_to =  get_url_host(request) + redirect_to
  38
  39         user_url = self.get_user_url(request)
  40
  41         if xri.identifierScheme(user_url) == 'XRI' and getattr(
  42             settings, 'OPENID_DISALLOW_INAMES', False
  43         ):
  44             raise InvalidAuthentication('i-names are not supported')
  45
  46         consumer = Consumer(request.session, OsqaOpenIDStore())
  47
  48         try:
  49             auth_request = consumer.begin(user_url)
  50         except DiscoveryFailure:
  51             raise InvalidAuthentication(_('Sorry, but your input is not a valid OpenId'))
  52
  53         #sreg = getattr(settings, 'OPENID_SREG', False)
  54
  55         #if sreg:
  56         #    s = SRegRequest()
  57         #    for sarg in sreg:
  58         #        if sarg.lower().lstrip() == "policy_url":
  59         #            s.policy_url = sreg[sarg]
  60         #        else:
  61         #            for v in sreg[sarg].split(','):
  62         #                s.requestField(field_name=v.lower().lstrip(), required=(sarg.lower().lstrip() == "required"))
  63         #    auth_request.addExtension(s)
  64
  65         #auth_request.addExtension(SRegRequest(required=['email']))
  66
  67         if request.session.get('force_email_request', True):
  68             axr = AXFetchRequest()
  69             for data_type, schema in self.dataype2ax_schema.items():
  70                 if isinstance(schema, tuple):
  71                     axr.add(AttrInfo(schema[0], 1, True, schema[1]))
  72                 else:
  73                     axr.add(AttrInfo(schema, 1, True, data_type))
  74
  75             auth_request.addExtension(axr)
  76
  77         trust_root = getattr(
  78             settings, 'OPENID_TRUST_ROOT', get_url_host(request) + '/'
  79         )
  80
  81         return auth_request.redirectURL(trust_root, redirect_to)
  82
  83     def process_authentication_request(self, request):
  84         consumer = Consumer(request.session, OsqaOpenIDStore())
  85
  86         query_dict = dict([
  87             (k.encode('utf8'), v.encode('utf8')) for k, v in request.GET.items()
  88         ])
  89
  90         #for i in query_dict.items():
  91             #print "%s : %s" % i
  92
  93         url = get_url_host(request) + request.path
  94         openid_response = consumer.complete(query_dict, url)
  95
  96         if openid_response.status == SUCCESS:
  97             if request.session.get('force_email_request', True):
  98                 try:
  99                     ax = AXFetchResponse.fromSuccessResponse(openid_response)
 100
 101                     axargs = ax.getExtensionArgs()
 102
 103                     ax_schema2data_type = dict([(s, t) for t, s in self.dataype2ax_schema.items()])
 104
 105                     available_types = dict([
 106                         (ax_schema2data_type[s], re.sub('^type\.', '', n))
 107                         for n, s in axargs.items() if s in ax_schema2data_type
 108                     ])
 109
 110                     available_data = dict([
 111                         (t, axargs["value.%s.1" % s]) for t, s in available_types.items()
 112                     ])
 113
 114                     request.session['auth_consumer_data'] = {
 115                         'email': available_data.get('email', None),
 116                     }
 117
 118                 except Exception, e:
 119                     pass
 120                     #import sys, traceback
 121                     #traceback.print_exc(file=sys.stdout)
 122
 123             return request.GET['openid.identity']
 124         elif openid_response.status == CANCEL:
 125             raise InvalidAuthentication(_('The OpenId authentication request was canceled'))
 126         elif openid_response.status == FAILURE:
 127             raise InvalidAuthentication(_('The OpenId authentication failed: ') + openid_response.message)
 128         elif openid_response.status == SETUP_NEEDED:
 129             raise InvalidAuthentication(_('Setup needed'))
 130         else:
 131             raise InvalidAuthentication(_('The OpenId authentication failed with an unknown status: ') + openid_response.status)
 132
 133     def get_user_data(self, key):
 134         return {}
 135
 136 def get_url_host(request):
 137     if request.is_secure():
 138         protocol = 'https'
 139     else:
 140         protocol = 'http'
 141     host = escape(get_host(request))
 142     return '%s://%s' % (protocol, host)
 143
 144 def get_full_url(request):
 145     return get_url_host(request) + request.get_full_path()