# -*- coding: utf-8 -*- from __future__ import absolute_import from typing import Any, List, Dict, Optional, Text from django.utils.translation import ugettext as _ from django.conf import settings from django.contrib.auth import authenticate, login, get_backends from django.core.urlresolvers import reverse from django.http import HttpResponseRedirect, HttpResponseForbidden, HttpResponse, HttpRequest from django.shortcuts import redirect from django.template import RequestContext, loader from django.utils.timezone import now from django.core.exceptions import ValidationError from django.core import validators from django.core.mail import send_mail from zerver.models import UserProfile, Realm, PreregistrationUser, \ name_changes_disabled, email_to_username, \ completely_open, get_unique_open_realm, email_allowed_for_realm, \ get_realm, get_realm_by_email_domain from zerver.lib.events import do_events_register from zerver.lib.actions import do_change_password, do_change_full_name, do_change_is_admin, \ do_activate_user, do_create_user, do_create_realm, set_default_streams, \ user_email_is_unique, \ compute_mit_user_fullname from zerver.forms import RegistrationForm, HomepageForm, RealmCreationForm, \ CreateUserForm, FindMyTeamForm from zerver.lib.actions import is_inactive from django_auth_ldap.backend import LDAPBackend, _LDAPUser from zerver.decorator import require_post, has_request_variables, \ JsonableError, get_user_profile_by_email, REQ from zerver.lib.response import json_success from zerver.lib.utils import get_subdomain from zproject.backends import password_auth_enabled from confirmation.models import Confirmation, RealmCreationKey, check_key_is_valid import logging import requests import ujson from six.moves import urllib from zproject.jinja2 import render_to_response def redirect_and_log_into_subdomain(realm, full_name, email_address): # type: (Realm, Text, Text) -> HttpResponse subdomain_login_uri = ''.join([ realm.uri, reverse('zerver.views.auth.log_into_subdomain') ]) domain = '.' + settings.EXTERNAL_HOST.split(':')[0] response = redirect(subdomain_login_uri) data = {'name': full_name, 'email': email_address, 'subdomain': realm.subdomain} # Creating a singed cookie so that it cannot be tampered with. # Cookie and the signature expire in 15 seconds. response.set_signed_cookie('subdomain.signature', ujson.dumps(data), expires=15, domain=domain, salt='zerver.views.auth') return response @require_post def accounts_register(request): # type: (HttpRequest) -> HttpResponse key = request.POST['key'] confirmation = Confirmation.objects.get(confirmation_key=key) prereg_user = confirmation.content_object email = prereg_user.email realm_creation = prereg_user.realm_creation try: existing_user_profile = get_user_profile_by_email(email) except UserProfile.DoesNotExist: existing_user_profile = None validators.validate_email(email) # If OPEN_REALM_CREATION is enabled all user sign ups should go through the # special URL with domain name so that REALM can be identified if multiple realms exist unique_open_realm = get_unique_open_realm() if unique_open_realm is not None: realm = unique_open_realm elif prereg_user.referred_by: # If someone invited you, you are joining their realm regardless # of your e-mail address. realm = prereg_user.referred_by.realm elif prereg_user.realm: # You have a realm set, even though nobody referred you. This # happens if you sign up through a special URL for an open realm. realm = prereg_user.realm elif realm_creation: # For creating a new realm, there is no existing realm or domain realm = None elif settings.REALMS_HAVE_SUBDOMAINS: realm = get_realm(get_subdomain(request)) else: realm = get_realm_by_email_domain(email) if realm and not email_allowed_for_realm(email, realm): return render_to_response("zerver/closed_realm.html", {"closed_domain_name": realm.name}) if realm and realm.deactivated: # The user is trying to register for a deactivated realm. Advise them to # contact support. return render_to_response("zerver/deactivated.html", {"deactivated_domain_name": realm.name, "zulip_administrator": settings.ZULIP_ADMINISTRATOR}) try: if existing_user_profile is not None and existing_user_profile.is_mirror_dummy: # Mirror dummy users to be activated must be inactive is_inactive(email) else: # Other users should not already exist at all. user_email_is_unique(email) except ValidationError: return HttpResponseRedirect(reverse('django.contrib.auth.views.login') + '?email=' + urllib.parse.quote_plus(email)) name_validated = False full_name = None if request.POST.get('from_confirmation'): try: del request.session['authenticated_full_name'] except KeyError: pass if realm is not None and realm.is_zephyr_mirror_realm: # For MIT users, we can get an authoritative name from Hesiod. # Technically we should check that this is actually an MIT # realm, but we can cross that bridge if we ever get a non-MIT # zephyr mirroring realm. hesiod_name = compute_mit_user_fullname(email) form = RegistrationForm( initial={'full_name': hesiod_name if "@" not in hesiod_name else ""}) name_validated = True elif settings.POPULATE_PROFILE_VIA_LDAP: for backend in get_backends(): if isinstance(backend, LDAPBackend): ldap_attrs = _LDAPUser(backend, backend.django_to_ldap_username(email)).attrs try: ldap_full_name = ldap_attrs[settings.AUTH_LDAP_USER_ATTR_MAP['full_name']][0] request.session['authenticated_full_name'] = ldap_full_name name_validated = True # We don't use initial= here, because if the form is # complete (that is, no additional fields need to be # filled out by the user) we want the form to validate, # so they can be directly registered without having to # go through this interstitial. form = RegistrationForm({'full_name': ldap_full_name}) # FIXME: This will result in the user getting # validation errors if they have to enter a password. # Not relevant for ONLY_SSO, though. break except TypeError: # Let the user fill out a name and/or try another backend form = RegistrationForm() elif 'full_name' in request.POST: form = RegistrationForm( initial={'full_name': request.POST.get('full_name')} ) else: form = RegistrationForm() else: postdata = request.POST.copy() if name_changes_disabled(realm): # If we populate profile information via LDAP and we have a # verified name from you on file, use that. Otherwise, fall # back to the full name in the request. try: postdata.update({'full_name': request.session['authenticated_full_name']}) name_validated = True except KeyError: pass form = RegistrationForm(postdata) if not password_auth_enabled(realm): form['password'].field.required = False if form.is_valid(): if password_auth_enabled(realm): password = form.cleaned_data['password'] else: # SSO users don't need no passwords password = None if realm_creation: string_id = form.cleaned_data['realm_subdomain'] realm_name = form.cleaned_data['realm_name'] org_type = int(form.cleaned_data['realm_org_type']) realm = do_create_realm(string_id, realm_name, org_type=org_type)[0] set_default_streams(realm, settings.DEFAULT_NEW_REALM_STREAMS) full_name = form.cleaned_data['full_name'] short_name = email_to_username(email) first_in_realm = len(UserProfile.objects.filter(realm=realm, is_bot=False)) == 0 # FIXME: sanitize email addresses and fullname if existing_user_profile is not None and existing_user_profile.is_mirror_dummy: try: user_profile = existing_user_profile do_activate_user(user_profile) do_change_password(user_profile, password) do_change_full_name(user_profile, full_name) except UserProfile.DoesNotExist: user_profile = do_create_user(email, password, realm, full_name, short_name, prereg_user=prereg_user, tos_version=settings.TOS_VERSION, newsletter_data={"IP": request.META['REMOTE_ADDR']}) else: user_profile = do_create_user(email, password, realm, full_name, short_name, prereg_user=prereg_user, tos_version=settings.TOS_VERSION, newsletter_data={"IP": request.META['REMOTE_ADDR']}) if first_in_realm: do_change_is_admin(user_profile, True) if realm_creation and settings.REALMS_HAVE_SUBDOMAINS: # Because for realm creation, registration happens on the # root domain, we need to log them into the subdomain for # their new realm. return redirect_and_log_into_subdomain(realm, full_name, email) # This dummy_backend check below confirms the user is # authenticating to the correct subdomain. return_data = {} # type: Dict[str, bool] auth_result = authenticate(username=user_profile.email, realm_subdomain=realm.subdomain, return_data=return_data, use_dummy_backend=True) if return_data.get('invalid_subdomain'): # By construction, this should never happen. logging.error("Subdomain mismatch in registration %s: %s" % ( realm.subdomain, user_profile.email,)) return redirect('/') login(request, auth_result) return HttpResponseRedirect(realm.uri + reverse('zerver.views.home.home')) return render_to_response( 'zerver/register.html', {'form': form, 'email': email, 'key': key, 'full_name': request.session.get('authenticated_full_name', None), 'lock_name': name_validated and name_changes_disabled(realm), # password_auth_enabled is normally set via our context processor, # but for the registration form, there is no logged in user yet, so # we have to set it here. 'creating_new_team': realm_creation, 'realms_have_subdomains': settings.REALMS_HAVE_SUBDOMAINS, 'password_auth_enabled': password_auth_enabled(realm), }, request=request) def create_preregistration_user(email, request, realm_creation=False): # type: (Text, HttpRequest, bool) -> HttpResponse realm_str = request.session.pop('realm_str', None) if realm_str is not None: # realm_str was set in accounts_home_with_realm_str. # The user is trying to sign up for a completely open realm, # so create them a PreregistrationUser for that realm return PreregistrationUser.objects.create(email=email, realm=get_realm(realm_str), realm_creation=realm_creation) return PreregistrationUser.objects.create(email=email, realm_creation=realm_creation) def accounts_home_with_realm_str(request, realm_str): # type: (HttpRequest, str) -> HttpResponse if not settings.REALMS_HAVE_SUBDOMAINS and completely_open(get_realm(realm_str)): # You can sign up for a completely open realm through a # special registration path that contains the domain in the # URL. We store this information in the session rather than # elsewhere because we don't have control over URL or form # data for folks registering through OpenID. request.session["realm_str"] = realm_str return accounts_home(request) else: return HttpResponseRedirect(reverse('zerver.views.registration.accounts_home')) def send_registration_completion_email(email, request, realm_creation=False): # type: (str, HttpRequest, bool) -> Confirmation """ Send an email with a confirmation link to the provided e-mail so the user can complete their registration. """ prereg_user = create_preregistration_user(email, request, realm_creation) context = {'support_email': settings.ZULIP_ADMINISTRATOR, 'verbose_support_offers': settings.VERBOSE_SUPPORT_OFFERS} return Confirmation.objects.send_confirmation(prereg_user, email, additional_context=context, host=request.get_host()) def redirect_to_email_login_url(email): # type: (str) -> HttpResponseRedirect login_url = reverse('django.contrib.auth.views.login') redirect_url = login_url + '?email=' + urllib.parse.quote_plus(email) return HttpResponseRedirect(redirect_url) def create_realm(request, creation_key=None): # type: (HttpRequest, Optional[Text]) -> HttpResponse if not settings.OPEN_REALM_CREATION: if creation_key is None: return render_to_response("zerver/realm_creation_failed.html", {'message': _('New organization creation disabled.')}) elif not check_key_is_valid(creation_key): return render_to_response("zerver/realm_creation_failed.html", {'message': _('The organization creation link has expired' ' or is not valid.')}) # When settings.OPEN_REALM_CREATION is enabled, anyone can create a new realm, # subject to a few restrictions on their email address. if request.method == 'POST': form = RealmCreationForm(request.POST) if form.is_valid(): email = form.cleaned_data['email'] confirmation_key = send_registration_completion_email(email, request, realm_creation=True).confirmation_key if settings.DEVELOPMENT: request.session['confirmation_key'] = {'confirmation_key': confirmation_key} if (creation_key is not None and check_key_is_valid(creation_key)): RealmCreationKey.objects.get(creation_key=creation_key).delete() return HttpResponseRedirect(reverse('send_confirm', kwargs={'email': email})) try: email = request.POST['email'] user_email_is_unique(email) except ValidationError: # Maybe the user is trying to log in return redirect_to_email_login_url(email) else: form = RealmCreationForm() return render_to_response('zerver/create_realm.html', {'form': form, 'current_url': request.get_full_path}, request=request) def confirmation_key(request): # type: (HttpRequest) -> HttpResponse return json_success(request.session.get('confirmation_key')) def get_realm_from_request(request): # type: (HttpRequest) -> Realm if settings.REALMS_HAVE_SUBDOMAINS: realm_str = get_subdomain(request) else: realm_str = request.session.get("realm_str") return get_realm(realm_str) def accounts_home(request): # type: (HttpRequest) -> HttpResponse realm = get_realm_from_request(request) if request.method == 'POST': form = HomepageForm(request.POST, realm=realm) if form.is_valid(): email = form.cleaned_data['email'] send_registration_completion_email(email, request) return HttpResponseRedirect(reverse('send_confirm', kwargs={'email': email})) try: email = request.POST['email'] # Note: We don't check for uniqueness is_inactive(email) except ValidationError: return redirect_to_email_login_url(email) else: form = HomepageForm(realm=realm) return render_to_response('zerver/accounts_home.html', {'form': form, 'current_url': request.get_full_path}, request=request) def generate_204(request): # type: (HttpRequest) -> HttpResponse return HttpResponse(content=None, status=204) def send_find_my_team_emails(user_profile): # type: (UserProfile) -> None text_template = 'zerver/emails/find_team/find_team_email.txt' html_template = 'zerver/emails/find_team/find_team_email.html' context = {'user_profile': user_profile} text_content = loader.render_to_string(text_template, context) html_content = loader.render_to_string(html_template, context) sender = settings.NOREPLY_EMAIL_ADDRESS recipients = [user_profile.email] subject = loader.render_to_string('zerver/emails/find_team/find_team_email.subject').strip() send_mail(subject, text_content, sender, recipients, html_message=html_content) def find_my_team(request): # type: (HttpRequest) -> HttpResponse url = reverse('zerver.views.registration.find_my_team') emails = [] # type: List[Text] if request.method == 'POST': form = FindMyTeamForm(request.POST) if form.is_valid(): emails = form.cleaned_data['emails'] for user_profile in UserProfile.objects.filter(email__in=emails): send_find_my_team_emails(user_profile) # Note: Show all the emails in the result otherwise this # feature can be used to ascertain which email addresses # are associated with Zulip. data = urllib.parse.urlencode({'emails': ','.join(emails)}) return redirect(url + "?" + data) else: form = FindMyTeamForm() result = request.GET.get('emails') if result: for email in result.split(','): try: validators.validate_email(email) emails.append(email) except ValidationError: pass return render_to_response('zerver/find_my_team.html', {'form': form, 'current_url': lambda: url, 'emails': emails}, request=request)