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 forum.views.decorators import login_required
  11 from forum.modules import decorate
  12 from django.contrib.auth import login, logout
  13 from django.http import get_host
  14 from forum.actions import SuspendAction
  15 from forum.utils import html
  16 from forum import settings
  17 from writers import manage_pending_data
  18 import types
  19 import datetime
  20 import logging
  21
  22 from forum.forms import SimpleRegistrationForm, SimpleEmailSubscribeForm, \
  23         TemporaryLoginRequestForm, ChangePasswordForm, SetPasswordForm
  24 from forum.utils.mail import send_template_email
  25
  26 from forum.authentication.base import InvalidAuthentication
  27 from forum.authentication import AUTH_PROVIDERS
  28
  29 from forum.models import AuthKeyUserAssociation, ValidationHash, Question, Answer
  30 from forum.actions import UserJoinsAction
  31
  32 def signin_page(request):
  33     request.session['on_signin_url'] = request.META.get('HTTP_REFERER', '/')
  34
  35     if reverse('auth_signin') == request.session['on_signin_url'].replace(settings.APP_URL, ''):
  36         request.session['on_signin_url'] = reverse('index')
  37
  38     all_providers = [provider.context for provider in AUTH_PROVIDERS.values()]
  39
  40     sort = lambda c1, c2: c1.weight - c2.weight
  41     can_show = lambda c: not request.user.is_authenticated() or c.show_to_logged_in_user
  42
  43     bigicon_providers = sorted([
  44     context for context in all_providers if context.mode == 'BIGICON' and can_show(context)
  45     ], sort)
  46
  47     smallicon_providers = sorted([
  48     context for context in all_providers if context.mode == 'SMALLICON' and can_show(context)
  49     ], sort)
  50
  51     top_stackitem_providers = sorted([
  52     context for context in all_providers if context.mode == 'TOP_STACK_ITEM' and can_show(context)
  53     ], sort)
  54
  55     stackitem_providers = sorted([
  56     context for context in all_providers if context.mode == 'STACK_ITEM' and can_show(context)
  57     ], sort)
  58
  59     try:
  60         msg = request.session['auth_error']
  61         del request.session['auth_error']
  62     except:
  63         msg = None
  64
  65     return render_to_response(
  66             'auth/signin.html',
  67             {
  68             'msg': msg,
  69             'all_providers': all_providers,
  70             'bigicon_providers': bigicon_providers,
  71             'top_stackitem_providers': top_stackitem_providers,
  72             'stackitem_providers': stackitem_providers,
  73             'smallicon_providers': smallicon_providers,
  74             },
  75             RequestContext(request))
  76
  77 def prepare_provider_signin(request, provider):
  78     force_email_request = request.REQUEST.get('validate_email', 'yes') == 'yes'
  79     request.session['force_email_request'] = force_email_request
  80
  81     if provider in AUTH_PROVIDERS:
  82         provider_class = AUTH_PROVIDERS[provider].consumer
  83
  84         try:
  85             request_url = provider_class.prepare_authentication_request(request,
  86                                                                         reverse('auth_provider_done',
  87                                                                                 kwargs={'provider': provider}))
  88
  89             return HttpResponseRedirect(request_url)
  90         except NotImplementedError, e:
  91             return process_provider_signin(request, provider)
  92         except InvalidAuthentication, e:
  93             request.session['auth_error'] = e.message
  94
  95         return HttpResponseRedirect(reverse('auth_signin'))
  96     else:
  97         raise Http404()
  98
  99
 100 def process_provider_signin(request, provider):
 101     if provider in AUTH_PROVIDERS:
 102         provider_class = AUTH_PROVIDERS[provider].consumer
 103
 104         try:
 105             assoc_key = provider_class.process_authentication_request(request)
 106         except InvalidAuthentication, e:
 107             request.session['auth_error'] = e.message
 108             return HttpResponseRedirect(reverse('auth_signin'))
 109
 110         if request.user.is_authenticated():
 111             if isinstance(assoc_key, (type, User)):
 112                 if request.user != assoc_key:
 113                     request.session['auth_error'] = _(
 114                             "Sorry, these login credentials belong to anoother user. Plese terminate your current session and try again."
 115                             )
 116                 else:
 117                     request.session['auth_error'] = _("You are already logged in with that user.")
 118             else:
 119                 try:
 120                     assoc = AuthKeyUserAssociation.objects.get(key=assoc_key)
 121                     if assoc.user == request.user:
 122                         request.session['auth_error'] = _(
 123                                 "These login credentials are already associated with your account.")
 124                     else:
 125                         request.session['auth_error'] = _(
 126                                 "Sorry, these login credentials belong to anoother user. Plese terminate your current session and try again."
 127                                 )
 128                 except:
 129                     uassoc = AuthKeyUserAssociation(user=request.user, key=assoc_key, provider=provider)
 130                     uassoc.save()
 131                     request.user.message_set.create(
 132                             message=_('The new credentials are now associated with your account'))
 133                     return HttpResponseRedirect(reverse('user_authsettings', args=[request.user.id]))
 134
 135             return HttpResponseRedirect(reverse('auth_signin'))
 136         else:
 137             if isinstance(assoc_key, User):
 138                 return login_and_forward(request, assoc_key)
 139
 140         try:
 141             assoc = AuthKeyUserAssociation.objects.get(key=assoc_key)
 142             user_ = assoc.user
 143             return login_and_forward(request, user_)
 144         except:
 145             request.session['assoc_key'] = assoc_key
 146             request.session['auth_provider'] = provider
 147             return HttpResponseRedirect(reverse('auth_external_register'))
 148
 149     return HttpResponseRedirect(reverse('auth_signin'))
 150
 151 def external_register(request):
 152     if request.method == 'POST' and 'bnewaccount' in request.POST:
 153         form1 = SimpleRegistrationForm(request.POST)
 154         email_feeds_form = SimpleEmailSubscribeForm(request.POST)
 155
 156         if (form1.is_valid() and email_feeds_form.is_valid()):
 157             user_ = User(username=form1.cleaned_data['username'], email=form1.cleaned_data['email'])
 158             user_.email_isvalid = request.session.get('auth_validated_email', '') == form1.cleaned_data['email']
 159             user_.set_unusable_password()
 160
 161             if User.objects.all().count() == 0:
 162                 user_.is_superuser = True
 163                 user_.is_staff = True
 164
 165             user_.save()
 166             UserJoinsAction(user=user_, ip=request.META['REMOTE_ADDR']).save()
 167
 168             try:
 169                 assoc_key = request.session['assoc_key']
 170                 auth_provider = request.session['auth_provider']
 171             except:
 172                 request.session['auth_error'] = _(
 173                         "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."
 174                         )
 175                 logging.error("Missing session data when trying to complete user registration: %s" % ", ".join(
 176                         ["%s: %s" % (k, v) for k, v in request.META.items()]))
 177                 return HttpResponseRedirect(reverse('auth_signin'))
 178
 179             uassoc = AuthKeyUserAssociation(user=user_, key=assoc_key, provider=auth_provider)
 180             uassoc.save()
 181
 182             if email_feeds_form.cleaned_data['subscribe'] == 'n':
 183                 user_.subscription_settings.enable_notifications = False
 184                 user_.subscription_settings.save()
 185
 186             del request.session['assoc_key']
 187             del request.session['auth_provider']
 188
 189             return login_and_forward(request, user_, message=_("A welcome email has been sent to your email address. "))
 190     else:
 191         auth_provider = request.session.get('auth_provider', None)
 192         if not auth_provider:
 193             request.session['auth_error'] = _(
 194                     "Oops, something went wrong in the middle of this process. Please try again.")
 195             logging.error("Missing session data when trying to complete user registration: %s" % ", ".join(
 196                     ["%s: %s" % (k, v) for k, v in request.META.items()]))
 197             return HttpResponseRedirect(reverse('auth_signin'))
 198
 199         provider_class = AUTH_PROVIDERS[auth_provider].consumer
 200         user_data = provider_class.get_user_data(request.session['assoc_key'])
 201
 202         if not user_data:
 203             user_data = request.session.get('auth_consumer_data', {})
 204
 205         username = user_data.get('username', '')
 206         email = user_data.get('email', '')
 207
 208         if email:
 209             request.session['auth_validated_email'] = email
 210
 211         form1 = SimpleRegistrationForm(initial={
 212         'next': '/',
 213         'username': username,
 214         'email': email,
 215         })
 216         email_feeds_form = SimpleEmailSubscribeForm()
 217
 218     provider_context = AUTH_PROVIDERS[request.session['auth_provider']].context
 219
 220     return render_to_response('auth/complete.html', {
 221     'form1': form1,
 222     'email_feeds_form': email_feeds_form,
 223     'provider':mark_safe(provider_context.human_name),
 224     'login_type':provider_context.id,
 225     'gravatar_faq_url':reverse('faq') + '#gravatar',
 226     }, context_instance=RequestContext(request))
 227
 228 def request_temp_login(request):
 229     if request.method == 'POST':
 230         form = TemporaryLoginRequestForm(request.POST)
 231
 232         if form.is_valid():
 233             users = form.user_cache
 234
 235             for u in users:
 236                 if u.is_suspended():
 237                     return forward_suspended_user(request, u, False)
 238
 239             for u in users:
 240                 try:
 241                     hash = get_object_or_404(ValidationHash, user=u, type='templogin')
 242                     if hash.expiration < datetime.datetime.now():
 243                         hash.delete()
 244                         return request_temp_login(request)
 245                 except:
 246                     hash = ValidationHash.objects.create_new(u, 'templogin', [u.id])
 247
 248                 send_template_email([u], "auth/temp_login_email.html", {'temp_login_code': hash})
 249
 250                 request.user.message_set.create(message=_("An email has been sent with your temporary login key"))
 251
 252             return HttpResponseRedirect(reverse('index'))
 253     else:
 254         form = TemporaryLoginRequestForm()
 255
 256     return render_to_response(
 257             'auth/temp_login_request.html', {'form': form},
 258             context_instance=RequestContext(request))
 259
 260 def temp_signin(request, user, code):
 261     user = get_object_or_404(User, id=user)
 262
 263     if (ValidationHash.objects.validate(code, user, 'templogin', [user.id])):
 264
 265         # If the user requests temp_signin he must have forgotten his password. So we mark it as unusable.
 266         user.set_unusable_password()
 267         user.save()
 268
 269         return login_and_forward(request, user, reverse('user_authsettings', kwargs={'id': user.id}),
 270                                  _(
 271                                          "You are logged in with a temporary access key, please take the time to fix your issue with authentication."
 272                                          ))
 273     else:
 274         raise Http404()
 275
 276 def send_validation_email(request):
 277     if not request.user.is_authenticated():
 278         return HttpResponseUnauthorized(request)
 279     else:
 280         try:
 281             hash = ValidationHash.objects.get(user=request.user, type='email')
 282             hash.delete()
 283
 284             # If we were able to get a previous validation hash we should raise an
 285             # Exception immediately. Otherwise new validation hash will not be created
 286             # and users will not receive the desired e-mail vaidation link.
 287             raise Exception("Validation has already been sent")
 288         except:
 289             hash = ValidationHash.objects.create_new(request.user, 'email', [request.user.email])
 290
 291         send_template_email([request.user], "auth/mail_validation.html", {'validation_code': hash})
 292         request.user.message_set.create(message=_("A message with an email validation link was just sent to your address."))
 293         return HttpResponseRedirect(request.META.get('HTTP_REFERER', '/'))
 294
 295
 296
 297 def validate_email(request, user, code):
 298     user = get_object_or_404(User, id=user)
 299
 300     if (ValidationHash.objects.validate(code, user, 'email', [user.email])):
 301         user.email_isvalid = True
 302         user.save()
 303         return login_and_forward(request, user, reverse('index'), _("Thank you, your email is now validated."))
 304     else:
 305         return render_to_response('auth/mail_already_validated.html', { 'user' : user }, RequestContext(request))
 306
 307 def auth_settings(request, id):
 308     user_ = get_object_or_404(User, id=id)
 309
 310     if not (request.user.is_superuser or request.user == user_):
 311         return HttpResponseUnauthorized(request)
 312
 313     auth_keys = user_.auth_keys.all()
 314
 315     if request.user.is_superuser or (not user_.has_usable_password()):
 316         FormClass = SetPasswordForm
 317     else:
 318         FormClass = ChangePasswordForm
 319
 320     if request.POST:
 321         form = FormClass(request.POST, user=user_)
 322         if form.is_valid():
 323             is_new_pass = not user_.has_usable_password()
 324             user_.set_password(form.cleaned_data['password1'])
 325             user_.save()
 326
 327             if is_new_pass:
 328                 request.user.message_set.create(message=_("New password set"))
 329                 if not request.user.is_superuser:
 330                     form = ChangePasswordForm(user=user_)
 331             else:
 332                 request.user.message_set.create(message=_("Your password was changed"))
 333
 334             return HttpResponseRedirect(reverse('user_authsettings', kwargs={'id': user_.id}))
 335     else:
 336         form = FormClass(user=user_)
 337
 338     auth_keys_list = []
 339
 340     for k in auth_keys:
 341         provider = AUTH_PROVIDERS.get(k.provider, None)
 342
 343         if provider is not None:
 344             name =  "%s: %s" % (provider.context.human_name, provider.context.readable_key(k))
 345         else:
 346             from forum.authentication.base import ConsumerTemplateContext
 347             "unknown: %s" % ConsumerTemplateContext.readable_key(k)
 348
 349         auth_keys_list.append({
 350         'name': name,
 351         'id': k.id
 352         })
 353
 354     return render_to_response('auth/auth_settings.html', {
 355     'view_user': user_,
 356     "can_view_private": (user_ == request.user) or request.user.is_superuser,
 357     'form': form,
 358     'has_password': user_.has_usable_password(),
 359     'auth_keys': auth_keys_list,
 360     'allow_local_auth': AUTH_PROVIDERS.get('local', None),
 361     }, context_instance=RequestContext(request))
 362
 363 def remove_external_provider(request, id):
 364     association = get_object_or_404(AuthKeyUserAssociation, id=id)
 365     if not (request.user.is_superuser or request.user == association.user):
 366         return HttpResponseUnauthorized(request)
 367
 368     request.user.message_set.create(message=_("You removed the association with %s") % association.provider)
 369     association.delete()
 370     return HttpResponseRedirect(reverse('user_authsettings', kwargs={'id': association.user.id}))
 371
 372 def login_and_forward(request, user, forward=None, message=None):
 373     if user.is_suspended():
 374         return forward_suspended_user(request, user)
 375
 376     user.backend = "django.contrib.auth.backends.ModelBackend"
 377     login(request, user)
 378
 379     if message is None:
 380         message = _("Welcome back %s, you are now logged in") % user.username
 381
 382     request.user.message_set.create(message=message)
 383
 384     if not forward:
 385         forward = request.session.get('on_signin_url', reverse('index'))
 386
 387     pending_data = request.session.get('pending_submission_data', None)
 388
 389     if pending_data and (user.email_isvalid or pending_data['type'] not in settings.REQUIRE_EMAIL_VALIDATION_TO):
 390         submission_time = pending_data['time']
 391         if submission_time < datetime.datetime.now() - datetime.timedelta(minutes=int(settings.HOLD_PENDING_POSTS_MINUTES)):
 392             del request.session['pending_submission_data']
 393         elif submission_time < datetime.datetime.now() - datetime.timedelta(minutes=int(settings.WARN_PENDING_POSTS_MINUTES)):
 394             user.message_set.create(message=(_("You have a %s pending submission.") % pending_data['data_name']) + " %s, %s, %s" % (
 395                 html.hyperlink(reverse('manage_pending_data', kwargs={'action': _('save')}), _("save it")),
 396                 html.hyperlink(reverse('manage_pending_data', kwargs={'action': _('review')}), _("review")),
 397                 html.hyperlink(reverse('manage_pending_data', kwargs={'action': _('cancel')}), _("cancel"))
 398             ))
 399         else:
 400             return manage_pending_data(request, _('save'), forward)
 401
 402     return HttpResponseRedirect(forward)
 403
 404 def forward_suspended_user(request, user, show_private_msg=True):
 405     message = _("Sorry, but this account is suspended")
 406     if show_private_msg:
 407         msg_type = 'privatemsg'
 408     else:
 409         msg_type = 'publicmsg'
 410
 411     suspension = user.suspension
 412     if suspension:
 413         message += (":<br />" + suspension.extra.get(msg_type, ''))
 414
 415     request.user.message_set.create(message)
 416     return HttpResponseRedirect(reverse('index'))
 417
 418 @decorate.withfn(login_required)
 419 def signout(request):
 420     logout(request)
 421     return HttpResponseRedirect(reverse('index'))