forum/views/auth.py

   1 # -*- coding: utf-8 -*-
   2
   3 import datetime
   4 import logging
   5
   6 from django.shortcuts import render_to_response, get_object_or_404
   7 from django.template import RequestContext
   8 from django.core.urlresolvers import reverse
   9 from django.http import HttpResponseRedirect, Http404
  10 from django.utils.safestring import mark_safe
  11 from django.utils.translation import ugettext as _
  12 from django.utils.encoding import smart_unicode
  13 from django.contrib.auth import login, logout
  14
  15 from writers import manage_pending_data
  16
  17 from forum.actions import EmailValidationAction
  18 from forum.utils import html
  19 from forum.views.decorators import login_required
  20 from forum.modules import decorate
  21 from forum.forms import SimpleRegistrationForm, TemporaryLoginRequestForm, ChangePasswordForm, SetPasswordForm
  22 from forum.http_responses import HttpResponseUnauthorized
  23 from forum.utils.mail import send_template_email
  24 from forum.authentication.base import InvalidAuthentication
  25 from forum.authentication import AUTH_PROVIDERS
  26 from forum.models import User, AuthKeyUserAssociation, ValidationHash
  27 from forum.actions import UserJoinsAction, UserLoginAction
  28 from forum import settings
  29
  30 from vars import ON_SIGNIN_SESSION_ATTR, PENDING_SUBMISSION_SESSION_ATTR
  31
  32 def signin_page(request):
  33     referer = request.META.get('HTTP_REFERER', '/')
  34
  35     # If the referer is equal to the sign up page, e. g. if the previous login attempt was not successful we do not
  36     # change the sign in URL. The user should go to the same page.
  37     if not referer.replace(settings.APP_URL, '') == reverse('auth_signin'):
  38         request.session[ON_SIGNIN_SESSION_ATTR] = referer
  39
  40     all_providers = [provider.context for provider in AUTH_PROVIDERS.values() if provider.context]
  41
  42     sort = lambda c1, c2: c1.weight - c2.weight
  43     can_show = lambda c: not request.user.is_authenticated() or c.show_to_logged_in_user
  44
  45     bigicon_providers = sorted([
  46     context for context in all_providers if context.mode == 'BIGICON' and can_show(context)
  47     ], sort)
  48
  49     smallicon_providers = sorted([
  50     context for context in all_providers if context.mode == 'SMALLICON' and can_show(context)
  51     ], sort)
  52
  53     top_stackitem_providers = sorted([
  54     context for context in all_providers if context.mode == 'TOP_STACK_ITEM' and can_show(context)
  55     ], sort)
  56
  57     stackitem_providers = sorted([
  58     context for context in all_providers if context.mode == 'STACK_ITEM' and can_show(context)
  59     ], sort)
  60
  61     try:
  62         msg = request.session['auth_error']
  63         del request.session['auth_error']
  64     except:
  65         msg = None
  66
  67     return render_to_response(
  68             'auth/signin.html',
  69             {
  70             'msg': msg,
  71             'all_providers': all_providers,
  72             'bigicon_providers': bigicon_providers,
  73             'top_stackitem_providers': top_stackitem_providers,
  74             'stackitem_providers': stackitem_providers,
  75             'smallicon_providers': smallicon_providers,
  76             },
  77             RequestContext(request))
  78
  79 def prepare_provider_signin(request, provider):
  80     force_email_request = request.REQUEST.get('validate_email', 'yes') == 'yes'
  81     request.session['force_email_request'] = force_email_request
  82
  83     if provider in AUTH_PROVIDERS:
  84         provider_class = AUTH_PROVIDERS[provider].consumer
  85
  86         try:
  87             request_url = provider_class.prepare_authentication_request(request,
  88                                                                         reverse('auth_provider_done',
  89                                                                                 kwargs={'provider': provider}))
  90
  91             return HttpResponseRedirect(request_url)
  92         except NotImplementedError, e:
  93             return process_provider_signin(request, provider)
  94         except InvalidAuthentication, e:
  95             request.session['auth_error'] = e.message
  96
  97         return HttpResponseRedirect(reverse('auth_signin'))
  98     else:
  99         raise Http404()
 100
 101
 102 def process_provider_signin(request, provider):
 103     if provider in AUTH_PROVIDERS:
 104         provider_class = AUTH_PROVIDERS[provider].consumer
 105
 106         try:
 107             assoc_key = provider_class.process_authentication_request(request)
 108         except InvalidAuthentication, e:
 109             request.session['auth_error'] = e.message
 110             return HttpResponseRedirect(reverse('auth_signin'))
 111
 112         if request.user.is_authenticated():
 113             if isinstance(assoc_key, (type, User)):
 114                 if request.user != assoc_key:
 115                     request.session['auth_error'] = _(
 116                             "Sorry, these login credentials belong to anoother user. Plese terminate your current session and try again."
 117                             )
 118                 else:
 119                     request.session['auth_error'] = _("You are already logged in with that user.")
 120             else:
 121                 try:
 122                     assoc = AuthKeyUserAssociation.objects.get(key=assoc_key)
 123                     if assoc.user == request.user:
 124                         request.session['auth_error'] = _(
 125                                 "These login credentials are already associated with your account.")
 126                     else:
 127                         request.session['auth_error'] = _(
 128                                 "Sorry, these login credentials belong to anoother user. Plese terminate your current session and try again."
 129                                 )
 130                 except:
 131                     uassoc = AuthKeyUserAssociation(user=request.user, key=assoc_key, provider=provider)
 132                     uassoc.save()
 133                     request.user.message_set.create(
 134                             message=_('The new credentials are now associated with your account'))
 135                     return HttpResponseRedirect(reverse('user_authsettings', args=[request.user.id]))
 136
 137             return HttpResponseRedirect(reverse('auth_signin'))
 138         else:
 139             if isinstance(assoc_key, User):
 140                 return login_and_forward(request, assoc_key)
 141
 142         try:
 143             assoc = AuthKeyUserAssociation.objects.get(key=assoc_key)
 144             user_ = assoc.user
 145             return login_and_forward(request, user_)
 146         except AuthKeyUserAssociation.DoesNotExist:
 147             request.session['assoc_key'] = assoc_key
 148             request.session['auth_provider'] = provider
 149             return HttpResponseRedirect(reverse('auth_external_register'))
 150
 151     return HttpResponseRedirect(reverse('auth_signin'))
 152
 153 def external_register(request):
 154     if request.method == 'POST' and 'bnewaccount' in request.POST:
 155         form1 = SimpleRegistrationForm(request.POST)
 156
 157         if form1.is_valid():
 158             user_ = User(username=form1.cleaned_data['username'], email=form1.cleaned_data['email'])
 159             user_.email_isvalid = request.session.get('auth_validated_email', '') == form1.cleaned_data['email']
 160             user_.set_unusable_password()
 161
 162             if User.objects.all().count() == 0:
 163                 user_.is_superuser = True
 164                 user_.is_staff = True
 165
 166             user_.save()
 167             UserJoinsAction(user=user_, ip=request.META['REMOTE_ADDR']).save()
 168
 169             try:
 170                 assoc_key = request.session['assoc_key']
 171                 auth_provider = request.session['auth_provider']
 172             except:
 173                 request.session['auth_error'] = _(
 174                         "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."
 175                         )
 176                 logging.error("Missing session data when trying to complete user registration: %s" % ", ".join(
 177                         ["%s: %s" % (k, v) for k, v in request.META.items()]))
 178                 return HttpResponseRedirect(reverse('auth_signin'))
 179
 180             uassoc = AuthKeyUserAssociation(user=user_, key=assoc_key, provider=auth_provider)
 181             uassoc.save()
 182
 183             del request.session['assoc_key']
 184             del request.session['auth_provider']
 185
 186             return login_and_forward(request, user_, message=_("A welcome email has been sent to your email address. "))
 187     else:
 188         auth_provider = request.session.get('auth_provider', None)
 189         if not auth_provider:
 190             request.session['auth_error'] = _(
 191                     "Oops, something went wrong in the middle of this process. Please try again.")
 192             logging.error("Missing session data when trying to complete user registration: %s" % ", ".join(
 193                     ["%s: %s" % (k, v) for k, v in request.META.items()]))
 194             return HttpResponseRedirect(reverse('auth_signin'))
 195
 196         provider_class = AUTH_PROVIDERS[auth_provider].consumer
 197
 198         # Pass the cookies to the Facebook authentication class get_user_data method. We need them to take the access token.
 199         if provider_class.__class__.__name__ == 'FacebookAuthConsumer':
 200             user_data = provider_class.get_user_data(request.COOKIES)
 201         else:
 202             user_data = provider_class.get_user_data(request.session['assoc_key'])
 203
 204         if not user_data:
 205             user_data = request.session.get('auth_consumer_data', {})
 206
 207         username = user_data.get('username', '')
 208         email = user_data.get('email', '')
 209
 210         if email:
 211             request.session['auth_validated_email'] = email
 212
 213         form1 = SimpleRegistrationForm(initial={
 214         'next': '/',
 215         'username': username,
 216         'email': email,
 217         })
 218
 219     provider_context = AUTH_PROVIDERS[request.session['auth_provider']].context
 220
 221     return render_to_response('auth/complete.html', {
 222     'form1': form1,
 223     'provider':provider_context and mark_safe(provider_context.human_name) or _('unknown'),
 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         # We check if there are some old validation hashes. If there are -- we delete them.
 281         try:
 282             hash = ValidationHash.objects.get(user=request.user, type='email')
 283             hash.delete()
 284         except:
 285             pass
 286
 287         # We don't care if there are previous cashes in the database... In every case we have to create a new one
 288         hash = ValidationHash.objects.create_new(request.user, 'email', [request.user.email])
 289
 290         send_template_email([request.user], "auth/mail_validation.html", {'validation_code': hash})
 291         request.user.message_set.create(message=_("A message with an email validation link was just sent to your address."))
 292         return HttpResponseRedirect(request.META.get('HTTP_REFERER', '/'))
 293
 294
 295
 296 def validate_email(request, user, code):
 297     user = get_object_or_404(User, id=user)
 298
 299     if (ValidationHash.objects.validate(code, user, 'email', [user.email])):
 300         EmailValidationAction(user=user, ip=request.META['REMOTE_ADDR']).save()
 301         return login_and_forward(request, user, reverse('index'), _("Thank you, your email is now validated."))
 302     else:
 303         return render_to_response('auth/mail_already_validated.html', { 'user' : user }, RequestContext(request))
 304
 305 def auth_settings(request, id):
 306     user_ = get_object_or_404(User, id=id)
 307
 308     if not (request.user.is_superuser or request.user == user_):
 309         return HttpResponseUnauthorized(request)
 310
 311     auth_keys = user_.auth_keys.all()
 312
 313     if request.user.is_superuser or (not user_.has_usable_password()):
 314         FormClass = SetPasswordForm
 315     else:
 316         FormClass = ChangePasswordForm
 317
 318     if request.POST:
 319         form = FormClass(request.POST, user=user_)
 320         if form.is_valid():
 321             is_new_pass = not user_.has_usable_password()
 322             user_.set_password(form.cleaned_data['password1'])
 323             user_.save()
 324
 325             if is_new_pass:
 326                 request.user.message_set.create(message=_("New password set"))
 327                 if not request.user.is_superuser:
 328                     form = ChangePasswordForm(user=user_)
 329             else:
 330                 request.user.message_set.create(message=_("Your password was changed"))
 331
 332             return HttpResponseRedirect(reverse('user_authsettings', kwargs={'id': user_.id}))
 333     else:
 334         form = FormClass(user=user_)
 335
 336     auth_keys_list = []
 337
 338     for k in auth_keys:
 339         provider = AUTH_PROVIDERS.get(k.provider, None)
 340
 341         if provider is not None:
 342             name =  "%s: %s" % (provider.context.human_name, provider.context.readable_key(k))
 343         else:
 344             from forum.authentication.base import ConsumerTemplateContext
 345             "unknown: %s" % ConsumerTemplateContext.readable_key(k)
 346
 347         auth_keys_list.append({
 348         'name': name,
 349         'id': k.id
 350         })
 351
 352     return render_to_response('auth/auth_settings.html', {
 353     'view_user': user_,
 354     "can_view_private": (user_ == request.user) or request.user.is_superuser,
 355     'form': form,
 356     'has_password': user_.has_usable_password(),
 357     'auth_keys': auth_keys_list,
 358     'allow_local_auth': AUTH_PROVIDERS.get('local', None),
 359     }, context_instance=RequestContext(request))
 360
 361 def remove_external_provider(request, id):
 362     association = get_object_or_404(AuthKeyUserAssociation, id=id)
 363     if not (request.user.is_superuser or request.user == association.user):
 364         return HttpResponseUnauthorized(request)
 365
 366     request.user.message_set.create(message=_("You removed the association with %s") % association.provider)
 367     association.delete()
 368     return HttpResponseRedirect(reverse('user_authsettings', kwargs={'id': association.user.id}))
 369
 370 def login_and_forward(request, user, forward=None, message=None):
 371     if user.is_suspended():
 372         return forward_suspended_user(request, user)
 373
 374     user.backend = "django.contrib.auth.backends.ModelBackend"
 375     login(request, user)
 376
 377     # Store the login action
 378     UserLoginAction(user=user, ip=request.META['REMOTE_ADDR']).save()
 379
 380     if message is None:
 381         message = _("Welcome back %s, you are now logged in") % smart_unicode(user.username)
 382
 383     request.user.message_set.create(message=message)
 384
 385     if not forward:
 386         forward = request.session.get(ON_SIGNIN_SESSION_ATTR, reverse('index'))
 387
 388     pending_data = request.session.get(PENDING_SUBMISSION_SESSION_ATTR, None)
 389
 390     if pending_data and (user.email_isvalid or pending_data['type'] not in settings.REQUIRE_EMAIL_VALIDATION_TO):
 391         submission_time = pending_data['time']
 392         if submission_time < datetime.datetime.now() - datetime.timedelta(minutes=int(settings.HOLD_PENDING_POSTS_MINUTES)):
 393             del request.session[PENDING_SUBMISSION_SESSION_ATTR]
 394         elif submission_time < datetime.datetime.now() - datetime.timedelta(minutes=int(settings.WARN_PENDING_POSTS_MINUTES)):
 395             user.message_set.create(message=(_("You have a %s pending submission.") % pending_data['data_name']) + " %s, %s, %s" % (
 396                 html.hyperlink(reverse('manage_pending_data', kwargs={'action': _('save')}), _("save it")),
 397                 html.hyperlink(reverse('manage_pending_data', kwargs={'action': _('review')}), _("review")),
 398                 html.hyperlink(reverse('manage_pending_data', kwargs={'action': _('cancel')}), _("cancel"))
 399             ))
 400         else:
 401             return manage_pending_data(request, _('save'), forward)
 402
 403     return HttpResponseRedirect(forward)
 404
 405 def forward_suspended_user(request, user, show_private_msg=True):
 406     message = _("Sorry, but this account is suspended")
 407     if show_private_msg:
 408         msg_type = 'privatemsg'
 409     else:
 410         msg_type = 'publicmsg'
 411
 412     suspension = user.suspension
 413     if suspension:
 414         message += (":<br />" + suspension.extra.get(msg_type, ''))
 415
 416     request.user.message_set.create(message)
 417     return HttpResponseRedirect(reverse('index'))
 418
 419 @decorate.withfn(login_required)
 420 def signout(request):
 421     logout(request)
 422     return HttpResponseRedirect(reverse('index'))