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import urllib
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from django.http.response import HttpResponseRedirect
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from django.utils.decorators import method_decorator
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from django.utils.translation import ugettext as _
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from django.views.decorators.cache import never_cache
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from django.views.generic import TemplateView
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from django.views import View
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from django.conf import settings
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from django.http.request import HttpRequest
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from rest_framework.permissions import IsAuthenticated, AllowAny
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from users.views import UserVerifyPasswordView
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from users.utils import is_auth_password_time_valid
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from users.models import User
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from common.utils import get_logger
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from common.utils.random import random_string
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from common.utils.django import reverse, get_object_or_none
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from common.message.backends.wecom import URL
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from common.message.backends.wecom import WeCom
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from common.mixins.views import PermissionsMixin
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from authentication import errors
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from authentication.mixins import AuthMixin
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logger = get_logger(__file__)
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WECOM_STATE_SESSION_KEY = '_wecom_state'
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class WeComQRMixin(PermissionsMixin, View):
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def verify_state(self):
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state = self.request.GET.get('state')
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session_state = self.request.session.get(WECOM_STATE_SESSION_KEY)
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if state != session_state:
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return False
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return True
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def get_verify_state_failed_response(self, redirect_uri):
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msg = _("You've been hacked")
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return self.get_failed_reponse(redirect_uri, msg, msg)
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def get_qr_url(self, redirect_uri):
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state = random_string(16)
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self.request.session[WECOM_STATE_SESSION_KEY] = state
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params = {
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'appid': settings.WECOM_CORPID,
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'agentid': settings.WECOM_AGENTID,
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'state': state,
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'redirect_uri': redirect_uri,
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}
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url = URL.QR_CONNECT + '?' + urllib.parse.urlencode(params)
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return url
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def get_success_reponse(self, redirect_url, title, msg):
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ok_flash_msg_url = reverse('authentication:wecom-bind-success-flash-msg')
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ok_flash_msg_url += '?' + urllib.parse.urlencode({
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'redirect_url': redirect_url,
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'title': title,
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'msg': msg
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})
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return HttpResponseRedirect(ok_flash_msg_url)
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def get_failed_reponse(self, redirect_url, title, msg):
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failed_flash_msg_url = reverse('authentication:wecom-bind-failed-flash-msg')
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failed_flash_msg_url += '?' + urllib.parse.urlencode({
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'redirect_url': redirect_url,
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'title': title,
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'msg': msg
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})
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return HttpResponseRedirect(failed_flash_msg_url)
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def get_already_bound_response(self, redirect_url):
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msg = _('WeCom is already bound')
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response = self.get_failed_reponse(redirect_url, msg, msg)
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return response
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class WeComQRBindView(WeComQRMixin, View):
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permission_classes = (IsAuthenticated,)
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def get(self, request: HttpRequest):
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user = request.user
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redirect_url = request.GET.get('redirect_url')
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if not is_auth_password_time_valid(request.session):
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msg = _('Please verify your password first')
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response = self.get_failed_reponse(redirect_url, msg, msg)
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return response
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redirect_uri = reverse('authentication:wecom-qr-bind-callback', kwargs={'user_id': user.id}, external=True)
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redirect_uri += '?' + urllib.parse.urlencode({'redirect_url': redirect_url})
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url = self.get_qr_url(redirect_uri)
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return HttpResponseRedirect(url)
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class WeComQRBindCallbackView(WeComQRMixin, View):
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permission_classes = (IsAuthenticated,)
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def get(self, request: HttpRequest, user_id):
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code = request.GET.get('code')
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redirect_url = request.GET.get('redirect_url')
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if not self.verify_state():
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return self.get_verify_state_failed_response(redirect_url)
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user = get_object_or_none(User, id=user_id)
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if user is None:
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logger.error(f'WeComQR bind callback error, user_id invalid: user_id={user_id}')
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msg = _('Invalid user_id')
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response = self.get_failed_reponse(redirect_url, msg, msg)
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return response
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if user.wecom_id:
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response = self.get_already_bound_response(redirect_url)
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return response
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wecom = WeCom(
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corpid=settings.WECOM_CORPID,
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corpsecret=settings.WECOM_CORPSECRET,
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agentid=settings.WECOM_AGENTID
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)
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wecom_userid, __ = wecom.get_user_id_by_code(code)
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if not wecom_userid:
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msg = _('WeCom query user failed')
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response = self.get_failed_reponse(redirect_url, msg, msg)
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return response
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user.wecom_id = wecom_userid
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user.save()
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msg = _('Binding WeCom successfully')
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response = self.get_success_reponse(redirect_url, msg, msg)
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return response
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class WeComEnableStartView(UserVerifyPasswordView):
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def get_success_url(self):
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referer = self.request.META.get('HTTP_REFERER')
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redirect_url = self.request.GET.get("redirect_url")
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success_url = reverse('authentication:wecom-qr-bind')
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success_url += '?' + urllib.parse.urlencode({
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'redirect_url': redirect_url or referer
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})
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return success_url
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class WeComQRLoginView(WeComQRMixin, View):
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permission_classes = (AllowAny,)
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def get(self, request: HttpRequest):
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redirect_url = request.GET.get('redirect_url')
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redirect_uri = reverse('authentication:wecom-qr-login-callback', external=True)
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redirect_uri += '?' + urllib.parse.urlencode({'redirect_url': redirect_url})
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url = self.get_qr_url(redirect_uri)
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return HttpResponseRedirect(url)
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class WeComQRLoginCallbackView(AuthMixin, WeComQRMixin, View):
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permission_classes = (AllowAny,)
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def get(self, request: HttpRequest):
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code = request.GET.get('code')
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redirect_url = request.GET.get('redirect_url')
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login_url = reverse('authentication:login')
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if not self.verify_state():
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return self.get_verify_state_failed_response(redirect_url)
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wecom = WeCom(
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corpid=settings.WECOM_CORPID,
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corpsecret=settings.WECOM_CORPSECRET,
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agentid=settings.WECOM_AGENTID
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)
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wecom_userid, __ = wecom.get_user_id_by_code(code)
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if not wecom_userid:
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# 正常流程不会出这个错误，hack 行为
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msg = _('Failed to get user from WeCom')
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response = self.get_failed_reponse(login_url, title=msg, msg=msg)
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return response
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user = get_object_or_none(User, wecom_id=wecom_userid)
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if user is None:
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title = _('WeCom is not bound')
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msg = _('Please login with a password and then bind the WoCom')
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response = self.get_failed_reponse(login_url, title=title, msg=msg)
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return response
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try:
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self.check_oauth2_auth(user, settings.AUTH_BACKEND_WECOM)
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except errors.AuthFailedError as e:
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self.set_login_failed_mark()
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msg = e.msg
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response = self.get_failed_reponse(login_url, title=msg, msg=msg)
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return response
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return self.redirect_to_guard_view()
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@method_decorator(never_cache, name='dispatch')
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class FlashWeComBindSucceedMsgView(TemplateView):
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template_name = 'flash_message_standalone.html'
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def get(self, request, *args, **kwargs):
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title = request.GET.get('title')
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msg = request.GET.get('msg')
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context = {
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'title': title or _('Binding WeCom successfully'),
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'messages': msg or _('Binding WeCom successfully'),
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'interval': 5,
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'redirect_url': request.GET.get('redirect_url'),
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'auto_redirect': True,
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}
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return self.render_to_response(context)
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@method_decorator(never_cache, name='dispatch')
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class FlashWeComBindFailedMsgView(TemplateView):
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template_name = 'flash_message_standalone.html'
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def get(self, request, *args, **kwargs):
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title = request.GET.get('title')
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msg = request.GET.get('msg')
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context = {
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'title': title or _('Binding WeCom failed'),
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'messages': msg or _('Binding WeCom failed'),
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'interval': 5,
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'redirect_url': request.GET.get('redirect_url'),
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'auto_redirect': True,
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}
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return self.render_to_response(context)
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