forum_modules/openidauth/consumer.py

   1 # -*- coding: utf-8 -*-
   2
   3 import re
   4
   5 from django.utils.encoding import smart_unicode
   6 from django.utils.html import escape
   7
   8 from forum.authentication.base import AuthenticationConsumer, InvalidAuthentication
   9 import settings
  10
  11 from openid.yadis import xri
  12 from openid.consumer.consumer import Consumer, SUCCESS, CANCEL, FAILURE, SETUP_NEEDED
  13 from openid.consumer.discover import DiscoveryFailure
  14 from openid.extensions.sreg import SRegRequest, SRegResponse
  15 from openid.extensions.ax import FetchRequest as AXFetchRequest, AttrInfo, FetchResponse as AXFetchResponse
  16 from django.utils.translation import ugettext as _
  17
  18 from store import OsqaOpenIDStore
  19
  20 class OpenIdAbstractAuthConsumer(AuthenticationConsumer):
  21
  22     dataype2ax_schema = {
  23         'username': 'http://axschema.org/namePerson/friendly',
  24         'email': 'http://axschema.org/contact/email',
  25         #'web': 'http://axschema.org/contact/web/default',
  26         #'firstname': 'http://axschema.org/namePerson/first',
  27         #'lastname': 'http://axschema.org/namePerson/last',
  28         #'birthdate': 'http://axschema.org/birthDate',
  29     }
  30
  31     sreg_attributes = {
  32         "required": {
  33             "email": "email",
  34             "nickname": "username",
  35             "fullname": "real_name"
  36         }
  37     }
  38
  39     def get_user_url(self, request):
  40         try:
  41             return request.POST['openid_identifier']
  42         except:
  43             raise NotImplementedError()
  44
  45     def prepare_authentication_request(self, request, redirect_to):
  46         if not redirect_to.startswith('http://') or redirect_to.startswith('https://'):
  47             redirect_to =  get_url_host(request) + redirect_to
  48
  49         user_url = self.get_user_url(request)
  50
  51         if xri.identifierScheme(user_url) == 'XRI' and getattr(
  52             settings, 'OPENID_DISALLOW_INAMES', False
  53         ):
  54             raise InvalidAuthentication('i-names are not supported')
  55
  56         consumer = Consumer(request.session, OsqaOpenIDStore())
  57
  58         try:
  59             auth_request = consumer.begin(user_url)
  60         except DiscoveryFailure:
  61             raise InvalidAuthentication(_('Sorry, but your input is not a valid OpenId'))
  62
  63         sreg = getattr(self, 'sreg_attributes', False)
  64
  65         if sreg:
  66             s = SRegRequest()
  67
  68             for k, attr_dic in sreg.items():
  69                 if k == "policy_url":
  70                     s.policy_url = attr_dic
  71                     continue
  72
  73                 for attr_name in attr_dic.keys():
  74                     s.requestField(field_name=attr_name, required=(k == "required"))
  75
  76             auth_request.addExtension(s)
  77
  78         ax_schema = getattr(self, 'dataype2ax_schema', False)
  79
  80         if ax_schema and request.session.get('force_email_request', True):
  81             axr = AXFetchRequest()
  82             for data_type, schema in ax_schema.items():
  83                 if isinstance(schema, tuple):
  84                     axr.add(AttrInfo(schema[0], required=True, alias=schema[1]))
  85                 else:
  86                     axr.add(AttrInfo(schema, required=True, alias=data_type))
  87
  88             auth_request.addExtension(axr)
  89
  90         trust_root = getattr(
  91             settings, 'OPENID_TRUST_ROOT', get_url_host(request) + '/'
  92         )
  93
  94         return auth_request.redirectURL(trust_root, redirect_to)
  95
  96     def process_authentication_request(self, request):
  97         consumer = Consumer(request.session, OsqaOpenIDStore())
  98
  99         query_dict = dict([
 100             (smart_unicode(k), smart_unicode(v)) for k, v in request.GET.items()
 101         ])
 102
 103         #for i in query_dict.items():
 104             #print "%s : %s" % i
 105
 106         url = get_url_host(request) + request.path
 107         openid_response = consumer.complete(query_dict, url)
 108
 109         if openid_response.status == SUCCESS:
 110
 111             consumer_data = {}
 112
 113             sreg_attrs = getattr(self, 'sreg_attributes', False)
 114
 115             if sreg_attrs:
 116                 sreg_response = SRegResponse.fromSuccessResponse(openid_response)
 117
 118                 if sreg_response:
 119                     all_attrs = {}
 120                     [all_attrs.update(d) for k,d in sreg_attrs.items() if k != "policy_url"]
 121
 122                     for attr_name, local_name in all_attrs.items():
 123                         if attr_name in sreg_response:
 124                             consumer_data[local_name] = sreg_response[attr_name]
 125
 126             ax_schema = getattr(self, 'dataype2ax_schema', False)
 127
 128             if ax_schema:
 129                 ax = AXFetchResponse.fromSuccessResponse(openid_response, False)
 130
 131                 if ax:
 132                     axargs = ax.getExtensionArgs()
 133
 134                     ax_schema2data_type = dict([(s, t) for t, s in ax_schema.items()])
 135
 136                     available_types = dict([
 137                         (ax_schema2data_type[s], re.sub('^type\.', '', n))
 138                         for n, s in axargs.items() if s in ax_schema2data_type
 139                     ])
 140
 141                     for t, s in available_types.items():
 142                         if not t in consumer_data:
 143                             if axargs.get("value.%s.1" % s, None):
 144                                 consumer_data[t] = axargs["value.%s.1" % s]
 145
 146             request.session['auth_consumer_data'] = consumer_data
 147
 148
 149             return request.GET['openid.identity']
 150         elif openid_response.status == CANCEL:
 151             raise InvalidAuthentication(_('The OpenId authentication request was canceled'))
 152         elif openid_response.status == FAILURE:
 153             raise InvalidAuthentication(_('The OpenId authentication failed: ') + openid_response.message)
 154         elif openid_response.status == SETUP_NEEDED:
 155             raise InvalidAuthentication(_('Setup needed'))
 156         else:
 157             raise InvalidAuthentication(_('The OpenId authentication failed with an unknown status: ') + openid_response.status)
 158
 159     def get_user_data(self, key):
 160         return {}
 161
 162 def get_url_host(request):
 163     if request.is_secure():
 164         protocol = 'https'
 165     else:
 166         protocol = 'http'
 167     host = escape(request.get_host())
 168     return '%s://%s' % (protocol, host)
 169
 170 def get_full_url(request):
 171     return get_url_host(request) + request.get_full_path()