forum/views/auth.py

   1 from django.shortcuts import render_to_response, get_object_or_404
   2 from django.template import RequestContext
   3 from django.core.urlresolvers import reverse
   4 from forum.models import User
   5 from django.http import HttpResponseRedirect, Http404
   6 from forum.http_responses import HttpResponseUnauthorized
   7 from django.utils.safestring import mark_safe
   8 from django.utils.translation import ugettext as _
   9 from django.utils.http import urlquote_plus
  10 from django.contrib.auth.decorators import login_required
  11 from django.contrib.auth import login, logout
  12 from django.http import get_host
  13 from forum.actions import SuspendAction
  14 from forum.utils import html
  15 from forum import settings
  16 from writers import manage_pending_data
  17 import types
  18 import datetime
  19 import logging
  20
  21 from forum.forms import SimpleRegistrationForm, SimpleEmailSubscribeForm, \
  22         TemporaryLoginRequestForm, ChangePasswordForm, SetPasswordForm
  23 from forum.utils.mail import send_template_email
  24
  25 from forum.authentication.base import InvalidAuthentication
  26 from forum.authentication import AUTH_PROVIDERS
  27
  28 from forum.models import AuthKeyUserAssociation, ValidationHash, Question, Answer
  29 from forum.actions import UserJoinsAction
  30
  31 def signin_page(request):
  32     request.session['on_signin_url'] = request.META.get('HTTP_REFERER', '/')
  33
  34     all_providers = [provider.context for provider in AUTH_PROVIDERS.values()]
  35
  36     sort = lambda c1, c2: c1.weight - c2.weight
  37     can_show = lambda c: not request.user.is_authenticated() or c.show_to_logged_in_user
  38
  39     bigicon_providers = sorted([
  40     context for context in all_providers if context.mode == 'BIGICON' and can_show(context)
  41     ], sort)
  42
  43     smallicon_providers = sorted([
  44     context for context in all_providers if context.mode == 'SMALLICON' and can_show(context)
  45     ], sort)
  46
  47     top_stackitem_providers = sorted([
  48     context for context in all_providers if context.mode == 'TOP_STACK_ITEM' and can_show(context)
  49     ], sort)
  50
  51     stackitem_providers = sorted([
  52     context for context in all_providers if context.mode == 'STACK_ITEM' and can_show(context)
  53     ], sort)
  54
  55     try:
  56         msg = request.session['auth_error']
  57         del request.session['auth_error']
  58     except:
  59         msg = None
  60
  61     return render_to_response(
  62             'auth/signin.html',
  63             {
  64             'msg': msg,
  65             'all_providers': all_providers,
  66             'bigicon_providers': bigicon_providers,
  67             'top_stackitem_providers': top_stackitem_providers,
  68             'stackitem_providers': stackitem_providers,
  69             'smallicon_providers': smallicon_providers,
  70             },
  71             RequestContext(request))
  72
  73 def prepare_provider_signin(request, provider):
  74     force_email_request = request.REQUEST.get('validate_email', 'yes') == 'yes'
  75     request.session['force_email_request'] = force_email_request
  76
  77     if provider in AUTH_PROVIDERS:
  78         provider_class = AUTH_PROVIDERS[provider].consumer
  79
  80         try:
  81             request_url = provider_class.prepare_authentication_request(request,
  82                                                                         reverse('auth_provider_done',
  83                                                                                 kwargs={'provider': provider}))
  84
  85             return HttpResponseRedirect(request_url)
  86         except NotImplementedError, e:
  87             return process_provider_signin(request, provider)
  88         except InvalidAuthentication, e:
  89             request.session['auth_error'] = e.message
  90
  91         return HttpResponseRedirect(reverse('auth_signin'))
  92     else:
  93         raise Http404()
  94
  95
  96 def process_provider_signin(request, provider):
  97     if provider in AUTH_PROVIDERS:
  98         provider_class = AUTH_PROVIDERS[provider].consumer
  99
 100         try:
 101             assoc_key = provider_class.process_authentication_request(request)
 102         except InvalidAuthentication, e:
 103             request.session['auth_error'] = e.message
 104             return HttpResponseRedirect(reverse('auth_signin'))
 105
 106         if request.user.is_authenticated():
 107             if isinstance(assoc_key, (type, User)):
 108                 if request.user != assoc_key:
 109                     request.session['auth_error'] = _(
 110                             "Sorry, these login credentials belong to anoother user. Plese terminate your current session and try again."
 111                             )
 112                 else:
 113                     request.session['auth_error'] = _("You are already logged in with that user.")
 114             else:
 115                 try:
 116                     assoc = AuthKeyUserAssociation.objects.get(key=assoc_key)
 117                     if assoc.user == request.user:
 118                         request.session['auth_error'] = _(
 119                                 "These login credentials are already associated with your account.")
 120                     else:
 121                         request.session['auth_error'] = _(
 122                                 "Sorry, these login credentials belong to anoother user. Plese terminate your current session and try again."
 123                                 )
 124                 except:
 125                     uassoc = AuthKeyUserAssociation(user=request.user, key=assoc_key, provider=provider)
 126                     uassoc.save()
 127                     request.user.message_set.create(
 128                             message=_('The new credentials are now associated with your account'))
 129                     return HttpResponseRedirect(reverse('user_authsettings', args=[request.user.id]))
 130
 131             return HttpResponseRedirect(reverse('auth_signin'))
 132         else:
 133             if isinstance(assoc_key, User):
 134                 return login_and_forward(request, assoc_key)
 135
 136         try:
 137             assoc = AuthKeyUserAssociation.objects.get(key=assoc_key)
 138             user_ = assoc.user
 139             return login_and_forward(request, user_)
 140         except:
 141             request.session['assoc_key'] = assoc_key
 142             request.session['auth_provider'] = provider
 143             return HttpResponseRedirect(reverse('auth_external_register'))
 144
 145     return HttpResponseRedirect(reverse('auth_signin'))
 146
 147 def external_register(request):
 148     if request.method == 'POST' and 'bnewaccount' in request.POST:
 149         form1 = SimpleRegistrationForm(request.POST)
 150         email_feeds_form = SimpleEmailSubscribeForm(request.POST)
 151
 152         if (form1.is_valid() and email_feeds_form.is_valid()):
 153             user_ = User(username=form1.cleaned_data['username'], email=form1.cleaned_data['email'])
 154             user_.email_isvalid = request.session.get('auth_validated_email', '') == form1.cleaned_data['email']
 155             user_.set_unusable_password()
 156
 157             if User.objects.all().count() == 0:
 158                 user_.is_superuser = True
 159                 user_.is_staff = True
 160
 161             user_.save()
 162             UserJoinsAction(user=user_, ip=request.META['REMOTE_ADDR']).save()
 163
 164             try:
 165                 assoc_key = request.session['assoc_key']
 166                 auth_provider = request.session['auth_provider']
 167             except:
 168                 request.session['auth_error'] = _(
 169                         "Oops, something went wrong in the middle of this process. Please try again. Note that you need to have cookies enabled for the authentication to work."
 170                         )
 171                 logging.error("Missing session data when trying to complete user registration: %s" % ", ".join(
 172                         ["%s: %s" % (k, v) for k, v in request.META.items()]))
 173                 return HttpResponseRedirect(reverse('auth_signin'))
 174
 175             uassoc = AuthKeyUserAssociation(user=user_, key=assoc_key, provider=auth_provider)
 176             uassoc.save()
 177
 178             if email_feeds_form.cleaned_data['subscribe'] == 'n':
 179                 user_.subscription_settings.enable_notifications = False
 180                 user_.subscription_settings.save()
 181
 182             del request.session['assoc_key']
 183             del request.session['auth_provider']
 184
 185             return login_and_forward(request, user_, message=_("A welcome email has been sent to your email address. "))
 186     else:
 187         auth_provider = request.session.get('auth_provider', None)
 188         if not auth_provider:
 189             request.session['auth_error'] = _(
 190                     "Oops, something went wrong in the middle of this process. Please try again.")
 191             logging.error("Missing session data when trying to complete user registration: %s" % ", ".join(
 192                     ["%s: %s" % (k, v) for k, v in request.META.items()]))
 193             return HttpResponseRedirect(reverse('auth_signin'))
 194
 195         provider_class = AUTH_PROVIDERS[auth_provider].consumer
 196         user_data = provider_class.get_user_data(request.session['assoc_key'])
 197
 198         if not user_data:
 199             user_data = request.session.get('auth_consumer_data', {})
 200
 201         username = user_data.get('username', '')
 202         email = user_data.get('email', '')
 203
 204         if email:
 205             request.session['auth_validated_email'] = email
 206
 207         form1 = SimpleRegistrationForm(initial={
 208         'next': '/',
 209         'username': username,
 210         'email': email,
 211         })
 212         email_feeds_form = SimpleEmailSubscribeForm()
 213
 214     provider_context = AUTH_PROVIDERS[request.session['auth_provider']].context
 215
 216     return render_to_response('auth/complete.html', {
 217     'form1': form1,
 218     'email_feeds_form': email_feeds_form,
 219     'provider':mark_safe(provider_context.human_name),
 220     'login_type':provider_context.id,
 221     'gravatar_faq_url':reverse('faq') + '#gravatar',
 222     }, context_instance=RequestContext(request))
 223
 224 def request_temp_login(request):
 225     if request.method == 'POST':
 226         form = TemporaryLoginRequestForm(request.POST)
 227
 228         if form.is_valid():
 229             users = form.user_cache
 230
 231             for u in users:
 232                 if u.is_suspended():
 233                     return forward_suspended_user(request, u, False)
 234
 235             for u in users:
 236                 try:
 237                     hash = get_object_or_404(ValidationHash, user=u, type='templogin')
 238                     if hash.expiration < datetime.datetime.now():
 239                         hash.delete()
 240                         return request_temp_login(request)
 241                 except:
 242                     hash = ValidationHash.objects.create_new(u, 'templogin', [u.id])
 243
 244                 send_template_email([u], "auth/temp_login_email.html", {'temp_login_code': hash})
 245
 246                 request.user.message_set.create(message=_("An email has been sent with your temporary login key"))
 247
 248             return HttpResponseRedirect(reverse('index'))
 249     else:
 250         form = TemporaryLoginRequestForm()
 251
 252     return render_to_response(
 253             'auth/temp_login_request.html', {'form': form},
 254             context_instance=RequestContext(request))
 255
 256 def temp_signin(request, user, code):
 257     user = get_object_or_404(User, id=user)
 258
 259     if (ValidationHash.objects.validate(code, user, 'templogin', [user.id])):
 260         return login_and_forward(request, user, reverse('user_authsettings', kwargs={'id': user.id}),
 261                                  _(
 262                                          "You are logged in with a temporary access key, please take the time to fix your issue with authentication."
 263                                          ))
 264     else:
 265         raise Http404()
 266
 267 def send_validation_email(request):
 268     if not request.user.is_authenticated():
 269         return HttpResponseUnauthorized(request)
 270     else:
 271         try:
 272             hash = ValidationHash.objects.get(user=request.user, type='email')
 273             if hash.expiration < datetime.datetime.now():
 274                 hash.delete()
 275                 return send_validation_email(request)
 276         except:
 277             hash = ValidationHash.objects.create_new(request.user, 'email', [request.user.email])
 278
 279         send_template_email([request.user], "auth/mail_validation.html", {'validation_code': hash})
 280         request.user.message_set.create(message=_("A message with an email validation link was just sent to your address."))
 281         return HttpResponseRedirect(request.META.get('HTTP_REFERER', '/'))
 282
 283
 284
 285 def validate_email(request, user, code):
 286     user = get_object_or_404(User, id=user)
 287
 288     if (ValidationHash.objects.validate(code, user, 'email', [user.email])):
 289         user.email_isvalid = True
 290         user.save()
 291         return login_and_forward(request, user, reverse('index'), _("Thank you, your email is now validated."))
 292     else:
 293         raise Http404()
 294
 295 @login_required
 296 def auth_settings(request, id):
 297     user_ = get_object_or_404(User, id=id)
 298
 299     if not (request.user.is_superuser or request.user == user_):
 300         return HttpResponseUnauthorized(request)
 301
 302     auth_keys = user_.auth_keys.all()
 303
 304     if request.user.is_superuser or (not user_.has_usable_password()):
 305         FormClass = SetPasswordForm
 306     else:
 307         FormClass = ChangePasswordForm
 308
 309     if request.POST:
 310         form = FormClass(request.POST, user=user_)
 311         if form.is_valid():
 312             is_new_pass = not user_.has_usable_password()
 313             user_.set_password(form.cleaned_data['password1'])
 314             user_.save()
 315
 316             if is_new_pass:
 317                 request.user.message_set.create(message=_("New password set"))
 318                 if not request.user.is_superuser:
 319                     form = ChangePasswordForm(user=user_)
 320             else:
 321                 request.user.message_set.create(message=_("Your password was changed"))
 322
 323             return HttpResponseRedirect(reverse('user_authsettings', kwargs={'id': user_.id}))
 324     else:
 325         form = FormClass(user=user_)
 326
 327     auth_keys_list = []
 328
 329     for k in auth_keys:
 330         provider = AUTH_PROVIDERS.get(k.provider, None)
 331
 332         if provider is not None:
 333             name =  "%s: %s" % (provider.context.human_name, provider.context.readable_key(k))
 334         else:
 335             from forum.authentication.base import ConsumerTemplateContext
 336             "unknown: %s" % ConsumerTemplateContext.readable_key(k)
 337
 338         auth_keys_list.append({
 339         'name': name,
 340         'id': k.id
 341         })
 342
 343     return render_to_response('auth/auth_settings.html', {
 344     'view_user': user_,
 345     "can_view_private": (user_ == request.user) or request.user.is_superuser,
 346     'form': form,
 347     'has_password': user_.has_usable_password(),
 348     'auth_keys': auth_keys_list,
 349     'allow_local_auth': AUTH_PROVIDERS.get('local', None),
 350     }, context_instance=RequestContext(request))
 351
 352 def remove_external_provider(request, id):
 353     association = get_object_or_404(AuthKeyUserAssociation, id=id)
 354     if not (request.user.is_superuser or request.user == association.user):
 355         return HttpResponseUnauthorized(request)
 356
 357     request.user.message_set.create(message=_("You removed the association with %s") % association.provider)
 358     association.delete()
 359     return HttpResponseRedirect(reverse('user_authsettings', kwargs={'id': association.user.id}))
 360
 361 def login_and_forward(request, user, forward=None, message=None):
 362     if user.is_suspended():
 363         return forward_suspended_user(request, user)
 364
 365     user.backend = "django.contrib.auth.backends.ModelBackend"
 366     login(request, user)
 367
 368     if message is None:
 369         message = _("Welcome back %s, you are now logged in") % user.username
 370
 371     request.user.message_set.create(message=message)
 372
 373     if not forward:
 374         forward = request.session.get('on_signin_url', reverse('index'))
 375
 376     pending_data = request.session.get('pending_submission_data', None)
 377
 378     if pending_data and (user.email_isvalid or pending_data['type'] not in settings.REQUIRE_EMAIL_VALIDATION_TO):
 379         submission_time = pending_data['time']
 380         if submission_time < datetime.datetime.now() - datetime.timedelta(minutes=int(settings.HOLD_PENDING_POSTS_MINUTES)):
 381             del request.session['pending_submission_data']
 382         elif submission_time < datetime.datetime.now() - datetime.timedelta(minutes=int(settings.WARN_PENDING_POSTS_MINUTES)):
 383             user.message_set.create(message=(_("You have a %s pending submission.") % pending_data['data_name']) + " %s, %s, %s" % (
 384                 html.hyperlink(reverse('manage_pending_data', kwargs={'action': _('save')}), _("save it")),
 385                 html.hyperlink(reverse('manage_pending_data', kwargs={'action': _('review')}), _("review")),
 386                 html.hyperlink(reverse('manage_pending_data', kwargs={'action': _('cancel')}), _("cancel"))
 387             ))
 388         else:
 389             return manage_pending_data(request, _('save'), forward)
 390
 391     return HttpResponseRedirect(forward)
 392
 393 def forward_suspended_user(request, user, show_private_msg=True):
 394     message = _("Sorry, but this account is suspended")
 395     if show_private_msg:
 396         msg_type = 'privatemsg'
 397     else:
 398         msg_type = 'publicmsg'
 399
 400     suspension = user.suspension
 401     if suspension:
 402         message += (":<br />" + suspension.extra.get(msg_type, ''))
 403
 404     request.user.message_set.create(message)
 405     return HttpResponseRedirect(reverse('index'))
 406
 407 @login_required
 408 def signout(request):
 409     logout(request)
 410     return HttpResponseRedirect(reverse('index'))