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from urllib.parse import urlencode
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from django.conf import settings
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from django.db.utils import IntegrityError
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from django.http.request import HttpRequest
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from django.http.response import HttpResponseRedirect
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from django.utils.translation import gettext_lazy as _
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from django.views import View
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from rest_framework.exceptions import APIException
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from rest_framework.permissions import IsAuthenticated, AllowAny
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from authentication import errors
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from authentication.const import ConfirmType
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from authentication.mixins import AuthMixin
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from authentication.notifications import OAuthBindMessage
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from common.permissions import UserConfirmation
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from common.sdk.im.wecom import URL
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from common.sdk.im.wecom import WeCom
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from common.utils import get_logger
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from common.utils.common import get_request_ip
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from common.utils.django import reverse, get_object_or_none
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from common.utils.random import random_string
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from common.views.mixins import UserConfirmRequiredExceptionMixin, PermissionsMixin
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from users.models import User
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from users.views import UserVerifyPasswordView
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from .base import BaseLoginCallbackView
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from .mixins import METAMixin, FlashMessageMixin
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logger = get_logger(__file__)
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WECOM_STATE_SESSION_KEY = '_wecom_state'
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class WeComBaseMixin(UserConfirmRequiredExceptionMixin, PermissionsMixin, FlashMessageMixin, View):
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def dispatch(self, request, *args, **kwargs):
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try:
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return super().dispatch(request, *args, **kwargs)
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except APIException as e:
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try:
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msg = e.detail['errmsg']
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except Exception:
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msg = _('WeCom Error, Please contact your system administrator')
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return self.get_failed_response(
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'/',
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_('WeCom Error'),
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msg
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)
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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 = _("The system configuration is incorrect. Please contact your administrator")
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return self.get_failed_response(redirect_uri, msg, msg)
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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_response(redirect_url, msg, msg)
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return response
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class WeComQRMixin(WeComBaseMixin, View):
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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 + '?' + urlencode(params)
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return url
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class WeComOAuthMixin(WeComBaseMixin, View):
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def get_oauth_url(self, redirect_uri):
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if not settings.AUTH_WECOM:
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return reverse('authentication:login')
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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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'response_type': 'code',
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'scope': 'snsapi_base',
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}
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url = URL.OAUTH_CONNECT + '?' + urlencode(params) + '#wechat_redirect'
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return url
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class WeComQRBindView(WeComQRMixin, View):
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permission_classes = (IsAuthenticated, UserConfirmation.require(ConfirmType.ReLogin))
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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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redirect_uri = reverse('authentication:wecom-qr-bind-callback', kwargs={'user_id': user.id}, external=True)
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redirect_uri += '?' + 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_response(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_SECRET,
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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_response(redirect_url, msg, msg)
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return response
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try:
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user.wecom_id = wecom_userid
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user.save()
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except IntegrityError as e:
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if e.args[0] == 1062:
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msg = _('The WeCom is already bound to another user')
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response = self.get_failed_response(redirect_url, msg, msg)
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return response
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raise e
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ip = get_request_ip(request)
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OAuthBindMessage(user, ip, _('WeCom'), wecom_userid).publish_async()
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msg = _('Binding WeCom successfully')
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response = self.get_success_response(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 += '?' + 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, METAMixin, 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') or reverse('index')
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next_url = self.get_next_url_from_meta() or reverse('index')
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redirect_uri = reverse('authentication:wecom-qr-login-callback', external=True)
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redirect_uri += '?' + urlencode({
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'redirect_url': redirect_url,
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'next': next_url,
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})
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url = self.get_qr_url(redirect_uri)
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return HttpResponseRedirect(url)
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class WeComQRLoginCallbackView(WeComQRMixin, BaseLoginCallbackView):
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permission_classes = (AllowAny,)
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client_type_path = 'common.sdk.im.wecom.WeCom'
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client_auth_params = {'corpid': 'WECOM_CORPID', 'corpsecret': 'WECOM_SECRET', 'agentid': 'WECOM_AGENTID'}
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user_type = 'wecom'
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auth_backend = 'AUTH_BACKEND_WECOM'
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msg_client_err = _('WeCom Error')
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msg_user_not_bound_err = _('WeCom is not bound')
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msg_not_found_user_from_client_err = _('Failed to get user from WeCom')
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class WeComOAuthLoginView(WeComOAuthMixin, 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-oauth-login-callback', external=True)
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redirect_uri += '?' + urlencode({'redirect_url': redirect_url})
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url = self.get_oauth_url(redirect_uri)
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return HttpResponseRedirect(url)
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class WeComOAuthLoginCallbackView(AuthMixin, WeComOAuthMixin, 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_SECRET,
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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_response(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 WeCom')
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response = self.get_failed_response(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_response(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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