zulip/zerver/tests/test_signup.py

# -*- coding: utf-8 -*-
from __future__ import absolute_import
import datetime
from django.conf import settings
from django.contrib.contenttypes.models import ContentType
from django.contrib.sites.models import Site
from django.http import HttpResponse
from django.test import TestCase
from django.utils.timezone import now as timezone_now

from mock import patch, MagicMock
from zerver.lib.test_helpers import MockLDAP

from confirmation.models import Confirmation

from zilencer.models import Deployment

from zerver.forms import HomepageForm, WRONG_SUBDOMAIN_ERROR
from zerver.lib.actions import do_change_password
from zerver.views.invite import get_invitee_emails_set
from zerver.views.registration import confirmation_key, \
    redirect_and_log_into_subdomain, send_registration_completion_email
from zerver.models import (
    get_realm, get_prereg_user_by_email, get_user_profile_by_email,
    get_unique_open_realm, completely_open,
    PreregistrationUser, Realm, RealmDomain, Recipient,
    Referral, ScheduledJob, UserProfile, UserMessage,
    Stream, Subscription, ScheduledJob, flush_per_request_caches
)
from zerver.lib.actions import (
    set_default_streams,
    do_change_is_admin,
    get_stream,
    do_create_realm,
)
from zerver.lib.send_email import display_email, send_email, send_future_email
from zerver.lib.initial_password import initial_password
from zerver.lib.actions import (
    do_deactivate_realm,
    do_set_realm_property,
    add_new_user_history,
)
from zerver.lib.mobile_auth_otp import xor_hex_strings, ascii_to_hex, \
    otp_encrypt_api_key, is_valid_otp, hex_to_ascii, otp_decrypt_api_key
from zerver.lib.notifications import enqueue_welcome_emails, \
    one_click_unsubscribe_link
from zerver.lib.test_helpers import find_pattern_in_email, find_key_by_email, queries_captured, \
    HostRequestMock, unsign_subdomain_cookie
from zerver.lib.test_classes import (
    ZulipTestCase,
)
from zerver.lib.test_runner import slow
from zerver.lib.sessions import get_session_dict_user
from zerver.context_processors import common_context

from collections import defaultdict
import re
import ujson

from typing import Any, Dict, List, Optional, Set

from six.moves import urllib
from six.moves import range
from typing import Any, Text
import os

class RedirectAndLogIntoSubdomainTestCase(ZulipTestCase):
    def test_cookie_data(self):
        # type: () -> None
        realm = Realm.objects.all().first()
        name = 'Hamlet'
        email = 'hamlet@zulip.com'
        response = redirect_and_log_into_subdomain(realm, name, email)
        data = unsign_subdomain_cookie(response)
        self.assertDictEqual(data, {'name': name, 'email': email,
                                    'subdomain': realm.subdomain,
                                    'is_signup': False})

        response = redirect_and_log_into_subdomain(realm, name, email,
                                                   is_signup=True)
        data = unsign_subdomain_cookie(response)
        self.assertDictEqual(data, {'name': name, 'email': email,
                                    'subdomain': realm.subdomain,
                                    'is_signup': True})

class AddNewUserHistoryTest(ZulipTestCase):
    def test_add_new_user_history_race(self):
        # type: () -> None
        """Sends a message during user creation"""
        # Create a user who hasn't had historical messages added
        stream_dict = {
            "Denmark": {"description": "A Scandinavian country", "invite_only": False},
            "Verona": {"description": "A city in Italy", "invite_only": False}
        }  # type: Dict[Text, Dict[Text, Any]]
        set_default_streams(get_realm("zulip"), stream_dict)
        with patch("zerver.lib.actions.add_new_user_history"):
            self.register("test@zulip.com", "test")
        user_profile = get_user_profile_by_email("test@zulip.com")

        subs = Subscription.objects.select_related("recipient").filter(
            user_profile=user_profile, recipient__type=Recipient.STREAM)
        streams = Stream.objects.filter(id__in=[sub.recipient.type_id for sub in subs])
        self.send_message("hamlet@zulip.com", streams[0].name, Recipient.STREAM, "test")
        add_new_user_history(user_profile, streams)

class PasswordResetTest(ZulipTestCase):
    """
    Log in, reset password, log out, log in with new password.
    """

    def test_password_reset(self):
        # type: () -> None
        email = 'hamlet@zulip.com'
        old_password = initial_password(email)

        self.login(email)

        # test password reset template
        result = self.client_get('/accounts/password/reset/')
        self.assert_in_response('Reset your password', result)

        # start the password reset process by supplying an email address
        result = self.client_post('/accounts/password/reset/', {'email': email})

        # check the redirect link telling you to check mail for password reset link
        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/password/reset/done/"))
        result = self.client_get(result["Location"])

        self.assert_in_response("Check your email to finish the process.", result)

        # Visit the password reset link.
        password_reset_url = self.get_confirmation_url_from_outbox(email, "(\S+)")
        result = self.client_get(password_reset_url)
        self.assertEqual(result.status_code, 200)

        # Reset your password
        result = self.client_post(password_reset_url,
                                  {'new_password1': 'new_password',
                                   'new_password2': 'new_password'})

        # password reset succeeded
        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith("/password/done/"))

        # log back in with new password
        self.login(email, password='new_password')
        user_profile = self.example_user('hamlet')
        self.assertEqual(get_session_dict_user(self.client.session), user_profile.id)

        # make sure old password no longer works
        self.login(email, password=old_password, fails=True)

    def test_invalid_subdomain(self):
        # type: () -> None
        email = 'hamlet@zulip.com'
        string_id = 'hamlet'
        name = 'Hamlet'
        do_create_realm(
            string_id,
            name,
            restricted_to_domain=False,
            invite_required=False
        )

        with self.settings(REALMS_HAVE_SUBDOMAINS=True):
            with patch('zerver.forms.get_subdomain', return_value=string_id):
                # start the password reset process by supplying an email address
                result = self.client_post(
                    '/accounts/password/reset/', {'email': email})

        # check the redirect link telling you to check mail for password reset link
        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/password/reset/done/"))
        result = self.client_get(result["Location"])

        self.assert_in_response("Check your email to finish the process.", result)

        from django.core.mail import outbox
        self.assertEqual(len(outbox), 1)
        message = outbox.pop()
        self.assertIn("hamlet@zulip.com does not\nhave an active account in http://",
                      message.body)

    def test_correct_subdomain(self):
        # type: () -> None
        email = 'hamlet@zulip.com'
        string_id = 'zulip'

        with self.settings(REALMS_HAVE_SUBDOMAINS=True):
            with patch('zerver.forms.get_subdomain', return_value=string_id):
                # start the password reset process by supplying an email address
                result = self.client_post(
                    '/accounts/password/reset/', {'email': email})

        # check the redirect link telling you to check mail for password reset link
        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/password/reset/done/"))
        result = self.client_get(result["Location"])

        self.assert_in_response("Check your email to finish the process.", result)

        from django.core.mail import outbox
        self.assertEqual(len(outbox), 1)
        message = outbox.pop()
        self.assertIn("Psst. Word on the street is that you forgot your password,",
                      message.body)

    def test_redirect_endpoints(self):
        # type: () -> None
        '''
        These tests are mostly designed to give us 100% URL coverage
        in our URL coverage reports.  Our mechanism for finding URL
        coverage doesn't handle redirects, so we just have a few quick
        tests here.
        '''
        result = self.client_get('/accounts/password/reset/done/')
        self.assert_in_success_response(["Check your email"], result)

        result = self.client_get('/accounts/password/done/')
        self.assert_in_success_response(["We've reset your password!"], result)

        result = self.client_get('/accounts/send_confirm/alice@example.com')
        self.assert_in_success_response(["Still no email?"], result)

class LoginTest(ZulipTestCase):
    """
    Logging in, registration, and logging out.
    """

    def test_login(self):
        # type: () -> None
        self.login("hamlet@zulip.com")
        user_profile = self.example_user('hamlet')
        self.assertEqual(get_session_dict_user(self.client.session), user_profile.id)

    def test_login_bad_password(self):
        # type: () -> None
        self.login("hamlet@zulip.com", password="wrongpassword", fails=True)
        self.assertIsNone(get_session_dict_user(self.client.session))

    def test_login_nonexist_user(self):
        # type: () -> None
        result = self.login_with_return("xxx@zulip.com", "xxx")
        self.assert_in_response("Please enter a correct email and password", result)

    def test_register(self):
        # type: () -> None
        realm = get_realm("zulip")
        stream_dict = {"stream_"+str(i): {"description": "stream_%s_description" % i, "invite_only": False}
                       for i in range(40)}  # type: Dict[Text, Dict[Text, Any]]
        for stream_name in stream_dict.keys():
            self.make_stream(stream_name, realm=realm)

        set_default_streams(realm, stream_dict)
        # Clear all the caches.
        flush_per_request_caches()
        ContentType.objects.clear_cache()
        Site.objects.clear_cache()

        with queries_captured() as queries:
            self.register("test@zulip.com", "test")
        # Ensure the number of queries we make is not O(streams)
        self.assert_length(queries, 47)
        user_profile = get_user_profile_by_email('test@zulip.com')
        self.assertEqual(get_session_dict_user(self.client.session), user_profile.id)
        self.assertFalse(user_profile.enable_stream_desktop_notifications)

    def test_register_deactivated(self):
        # type: () -> None
        """
        If you try to register for a deactivated realm, you get a clear error
        page.
        """
        realm = get_realm("zulip")
        realm.deactivated = True
        realm.save(update_fields=["deactivated"])

        result = self.register("test@zulip.com", "test")
        self.assert_in_response("has been deactivated", result)

        with self.assertRaises(UserProfile.DoesNotExist):
            get_user_profile_by_email('test@zulip.com')

    def test_login_deactivated(self):
        # type: () -> None
        """
        If you try to log in to a deactivated realm, you get a clear error page.
        """
        realm = get_realm("zulip")
        realm.deactivated = True
        realm.save(update_fields=["deactivated"])

        result = self.login_with_return("hamlet@zulip.com")
        self.assert_in_response("has been deactivated", result)

    def test_logout(self):
        # type: () -> None
        self.login("hamlet@zulip.com")
        # We use the logout API, not self.logout, to make sure we test
        # the actual logout code path.
        self.client_post('/accounts/logout/')
        self.assertIsNone(get_session_dict_user(self.client.session))

    def test_non_ascii_login(self):
        # type: () -> None
        """
        You can log in even if your password contain non-ASCII characters.
        """
        email = "test@zulip.com"
        password = u"hümbüǵ"

        # Registering succeeds.
        self.register("test@zulip.com", password)
        user_profile = get_user_profile_by_email(email)
        self.assertEqual(get_session_dict_user(self.client.session), user_profile.id)
        self.logout()
        self.assertIsNone(get_session_dict_user(self.client.session))

        # Logging in succeeds.
        self.logout()
        self.login(email, password)
        self.assertEqual(get_session_dict_user(self.client.session), user_profile.id)

    def test_login_page_redirects_logged_in_user(self):
        # type: () -> None
        """You will be redirected to the app's main page if you land on the
        login page when already logged in.
        """
        self.login("cordelia@zulip.com")
        response = self.client_get("/login/")
        self.assertEqual(response["Location"], "/")

class InviteUserTest(ZulipTestCase):

    def invite(self, users, streams, body=''):
        # type: (str, List[Text], str) -> HttpResponse
        """
        Invites the specified users to Zulip with the specified streams.

        users should be a string containing the users to invite, comma or
            newline separated.

        streams should be a list of strings.
        """

        return self.client_post("/json/invite_users",
                                {"invitee_emails": users,
                                 "stream": streams,
                                 "custom_body": body})

    def check_sent_emails(self, correct_recipients, custom_body=None):
        # type: (List[str], Optional[str]) -> None
        from django.core.mail import outbox
        self.assertEqual(len(outbox), len(correct_recipients))
        email_recipients = [email.recipients()[0] for email in outbox]
        self.assertEqual(sorted(email_recipients), sorted(correct_recipients))
        if len(outbox) == 0:
            return

        if custom_body is None:
            self.assertNotIn("Message from", outbox[0].body)
        else:
            self.assertIn("Message from ", outbox[0].body)
            self.assertIn(custom_body, outbox[0].body)

    def test_bulk_invite_users(self):
        # type: () -> None
        """The bulk_invite_users code path is for the first user in a realm."""
        self.login('hamlet@zulip.com')
        invitees = ['alice@zulip.com', 'bob@zulip.com']
        params = {
            'invitee_emails': ujson.dumps(invitees),
        }
        result = self.client_post('/json/invite/bulk', params)
        self.assert_json_success(result)
        self.check_sent_emails(invitees)

    def test_bulk_invite_users_invalid_emails(self):
        # type: () -> None
        self.login('hamlet@zulip.com')
        invitees = ['alice@zulip.com', 'bobnoatzulip.com']
        params = {
            'invitee_emails': ujson.dumps(invitees),
        }
        self.assert_json_error(
            self.client_post('/json/invite/bulk', params),
            'Some emails did not validate, so we didn\'t send any invitations.')
        self.check_sent_emails([])

    def test_successful_invite_user(self):
        # type: () -> None
        """
        A call to /json/invite_users with valid parameters causes an invitation
        email to be sent.
        """
        self.login("hamlet@zulip.com")
        invitee = "alice-test@zulip.com"
        self.assert_json_success(self.invite(invitee, ["Denmark"]))
        self.assertTrue(find_key_by_email(invitee))
        self.check_sent_emails([invitee])

    def test_successful_invite_user_with_custom_body(self):
        # type: () -> None
        """
        A call to /json/invite_users with valid parameters causes an invitation
        email to be sent.
        """
        self.login("hamlet@zulip.com")
        invitee = "alice-test@zulip.com"
        body = "Custom Text."
        self.assert_json_success(self.invite(invitee, ["Denmark"], body))
        self.assertTrue(find_pattern_in_email(invitee, body))
        self.check_sent_emails([invitee], custom_body=body)

    def test_successful_invite_user_with_name(self):
        # type: () -> None
        """
        A call to /json/invite_users with valid parameters causes an invitation
        email to be sent.
        """
        self.login("hamlet@zulip.com")
        email = "alice-test@zulip.com"
        invitee = "Alice Test <{}>".format(email)
        self.assert_json_success(self.invite(invitee, ["Denmark"]))
        self.assertTrue(find_key_by_email(email))
        self.check_sent_emails([email])

    def test_successful_invite_user_with_name_and_normal_one(self):
        # type: () -> None
        """
        A call to /json/invite_users with valid parameters causes an invitation
        email to be sent.
        """
        self.login("hamlet@zulip.com")
        email = "alice-test@zulip.com"
        email2 = "bob-test@zulip.com"
        invitee = "Alice Test <{}>, {}".format(email, email2)
        self.assert_json_success(self.invite(invitee, ["Denmark"]))
        self.assertTrue(find_key_by_email(email))
        self.assertTrue(find_key_by_email(email2))
        self.check_sent_emails([email, email2])

    def test_successful_invite_user_with_notifications_stream(self):
        # type: () -> None
        """
        A call to /json/invite_users with valid parameters unconditionally
        subscribes the invitee to the notifications stream if it exists and is
        public.
        """
        realm = get_realm('zulip')
        notifications_stream = get_stream('Verona', realm)
        realm.notifications_stream = notifications_stream
        realm.save()

        self.login('hamlet@zulip.com')
        invitee = 'alice-test@zulip.com'
        self.assert_json_success(self.invite(invitee, ['Denmark']))
        self.assertTrue(find_key_by_email(invitee))
        self.check_sent_emails([invitee])

        prereg_user = get_prereg_user_by_email(invitee)
        streams = list(prereg_user.streams.all())
        self.assertTrue(notifications_stream in streams)

    def test_invite_user_signup_initial_history(self):
        # type: () -> None
        """
        Test that a new user invited to a stream receives some initial
        history but only from public streams.
        """
        self.login("hamlet@zulip.com")
        user_profile = self.example_user('hamlet')
        private_stream_name = "Secret"
        self.make_stream(private_stream_name, invite_only=True)
        self.subscribe_to_stream(user_profile.email, private_stream_name)
        public_msg_id = self.send_message("hamlet@zulip.com", "Denmark", Recipient.STREAM,
                                          "Public topic", "Public message")
        secret_msg_id = self.send_message("hamlet@zulip.com", private_stream_name, Recipient.STREAM,
                                          "Secret topic", "Secret message")
        invitee = "alice-test@zulip.com"
        self.assert_json_success(self.invite(invitee, [private_stream_name, "Denmark"]))
        self.assertTrue(find_key_by_email(invitee))

        self.submit_reg_form_for_user("alice-test@zulip.com", "password")
        invitee_profile = get_user_profile_by_email(invitee)
        invitee_msg_ids = [um.message_id for um in
                           UserMessage.objects.filter(user_profile=invitee_profile)]
        self.assertTrue(public_msg_id in invitee_msg_ids)
        self.assertFalse(secret_msg_id in invitee_msg_ids)

    def test_multi_user_invite(self):
        # type: () -> None
        """
        Invites multiple users with a variety of delimiters.
        """
        self.login("hamlet@zulip.com")
        # Intentionally use a weird string.
        self.assert_json_success(self.invite(
            """bob-test@zulip.com,     carol-test@zulip.com,
            dave-test@zulip.com


earl-test@zulip.com""", ["Denmark"]))
        for user in ("bob", "carol", "dave", "earl"):
            self.assertTrue(find_key_by_email("%s-test@zulip.com" % (user,)))
        self.check_sent_emails(["bob-test@zulip.com", "carol-test@zulip.com",
                                "dave-test@zulip.com", "earl-test@zulip.com"])

    def test_missing_or_invalid_params(self):
        # type: () -> None
        """
        Tests inviting with various missing or invalid parameters.
        """
        self.login("hamlet@zulip.com")
        self.assert_json_error(
            self.client_post("/json/invite_users", {"invitee_emails": "foo@zulip.com",
                                                    "custom_body": ''}),
            "You must specify at least one stream for invitees to join.")

        for address in ("noatsign.com", "outsideyourdomain@example.net"):
            self.assert_json_error(
                self.invite(address, ["Denmark"]),
                "Some emails did not validate, so we didn't send any invitations.")
        self.check_sent_emails([])

        self.assert_json_error(
            self.invite("", ["Denmark"]),
            "You must specify at least one email address.")
        self.check_sent_emails([])

    def test_invalid_stream(self):
        # type: () -> None
        """
        Tests inviting to a non-existent stream.
        """
        self.login("hamlet@zulip.com")
        self.assert_json_error(self.invite("iago-test@zulip.com", ["NotARealStream"]),
                               "Stream does not exist: NotARealStream. No invites were sent.")
        self.check_sent_emails([])

    def test_invite_existing_user(self):
        # type: () -> None
        """
        If you invite an address already using Zulip, no invitation is sent.
        """
        self.login("hamlet@zulip.com")
        self.assert_json_error(
            self.client_post("/json/invite_users",
                             {"invitee_emails": "hamlet@zulip.com",
                              "stream": ["Denmark"],
                              "custom_body": ''}),
            "We weren't able to invite anyone.")
        self.assertRaises(PreregistrationUser.DoesNotExist,
                          lambda: PreregistrationUser.objects.get(
                              email="hamlet@zulip.com"))
        self.check_sent_emails([])

    def test_invite_some_existing_some_new(self):
        # type: () -> None
        """
        If you invite a mix of already existing and new users, invitations are
        only sent to the new users.
        """
        self.login("hamlet@zulip.com")
        existing = ["hamlet@zulip.com", "othello@zulip.com"]
        new = ["foo-test@zulip.com", "bar-test@zulip.com"]

        result = self.client_post("/json/invite_users",
                                  {"invitee_emails": "\n".join(existing + new),
                                   "stream": ["Denmark"],
                                   "custom_body": ''})
        self.assert_json_error(result,
                               "Some of those addresses are already using Zulip, \
so we didn't send them an invitation. We did send invitations to everyone else!")

        # We only created accounts for the new users.
        for email in existing:
            self.assertRaises(PreregistrationUser.DoesNotExist,
                              lambda: PreregistrationUser.objects.get(
                                  email=email))
        for email in new:
            self.assertTrue(PreregistrationUser.objects.get(email=email))

        # We only sent emails to the new users.
        self.check_sent_emails(new)

        prereg_user = get_prereg_user_by_email('foo-test@zulip.com')
        self.assertEqual(prereg_user.email, 'foo-test@zulip.com')

    def test_invite_outside_domain_in_closed_realm(self):
        # type: () -> None
        """
        In a realm with `restricted_to_domain = True`, you can't invite people
        with a different domain from that of the realm or your e-mail address.
        """
        zulip_realm = get_realm("zulip")
        zulip_realm.restricted_to_domain = True
        zulip_realm.save()

        self.login("hamlet@zulip.com")
        external_address = "foo@example.com"

        self.assert_json_error(
            self.invite(external_address, ["Denmark"]),
            "Some emails did not validate, so we didn't send any invitations.")

    def test_invite_outside_domain_in_open_realm(self):
        # type: () -> None
        """
        In a realm with `restricted_to_domain = False`, you can invite people
        with a different domain from that of the realm or your e-mail address.
        """
        zulip_realm = get_realm("zulip")
        zulip_realm.restricted_to_domain = False
        zulip_realm.save()

        self.login("hamlet@zulip.com")
        external_address = "foo@example.com"

        self.assert_json_success(self.invite(external_address, ["Denmark"]))
        self.check_sent_emails([external_address])

    def test_invite_outside_domain_before_closing(self):
        # type: () -> None
        """
        If you invite someone with a different domain from that of the realm
        when `restricted_to_domain = False`, but `restricted_to_domain` later
        changes to true, the invitation should succeed but the invitee's signup
        attempt should fail.
        """
        zulip_realm = get_realm("zulip")
        zulip_realm.restricted_to_domain = False
        zulip_realm.save()

        self.login("hamlet@zulip.com")
        external_address = "foo@example.com"

        self.assert_json_success(self.invite(external_address, ["Denmark"]))
        self.check_sent_emails([external_address])

        zulip_realm.restricted_to_domain = True
        zulip_realm.save()

        result = self.submit_reg_form_for_user("foo@example.com", "password")
        self.assertEqual(result.status_code, 200)
        self.assert_in_response("only allows users with e-mail", result)

    def test_invite_with_non_ascii_streams(self):
        # type: () -> None
        """
        Inviting someone to streams with non-ASCII characters succeeds.
        """
        self.login("hamlet@zulip.com")
        invitee = "alice-test@zulip.com"

        stream_name = u"hümbüǵ"

        # Make sure we're subscribed before inviting someone.
        self.subscribe_to_stream("hamlet@zulip.com", stream_name)

        self.assert_json_success(self.invite(invitee, [stream_name]))

    def test_refer_friend(self):
        # type: () -> None
        self.login("hamlet@zulip.com")
        user = self.example_user('hamlet')
        user.invites_granted = 1
        user.invites_used = 0
        user.save()

        invitee = "alice-test@zulip.com"
        result = self.client_post('/json/refer_friend', dict(email=invitee))
        self.assert_json_success(result)

        # verify this works
        Referral.objects.get(user_profile=user, email=invitee)

        user = self.example_user('hamlet')
        self.assertEqual(user.invites_used, 1)

    def test_refer_friend_no_email(self):
        # type: () -> None
        self.login("hamlet@zulip.com")
        user = self.example_user('hamlet')
        user.invites_granted = 1
        user.invites_used = 0
        user.save()

        self.assert_json_error(
            self.client_post('/json/refer_friend', dict(email='')),
            "No email address specified")

        user = self.example_user('hamlet')
        self.assertEqual(user.invites_used, 0)

    def test_refer_friend_no_invites(self):
        # type: () -> None
        self.login("hamlet@zulip.com")
        user = self.example_user('hamlet')
        user.invites_granted = 1
        user.invites_used = 1
        user.save()

        invitee = "alice-test@zulip.com"
        self.assert_json_error(
            self.client_post('/json/refer_friend', dict(email=invitee)),
            "Insufficient invites")

        user = self.example_user('hamlet')
        self.assertEqual(user.invites_used, 1)

    def test_invitation_reminder_email(self):
        # type: () -> None
        from django.core.mail import outbox
        current_user_email = "hamlet@zulip.com"
        self.login(current_user_email)
        invitee = "alice-test@zulip.com"
        self.assert_json_success(self.invite(invitee, ["Denmark"]))
        self.assertTrue(find_key_by_email(invitee))
        self.check_sent_emails([invitee])

        data = {"email": invitee, "referrer_email": current_user_email}
        invitee = get_prereg_user_by_email(data["email"])
        referrer = get_user_profile_by_email(data["referrer_email"])
        link = Confirmation.objects.get_link_for_object(invitee, host=referrer.realm.host)
        context = common_context(referrer)
        context.update({
            'activate_url': link,
            'referrer_name': referrer.full_name,
            'referrer_email': referrer.email,
            'referrer_realm_name': referrer.realm.name,
            'verbose_support_offers': settings.VERBOSE_SUPPORT_OFFERS,
            'support_email': settings.ZULIP_ADMINISTRATOR
        })
        with self.settings(EMAIL_BACKEND='django.core.mail.backends.console.EmailBackend'):
            send_future_email(
                "zerver/emails/invitation_reminder", data["email"],
                from_email=settings.ZULIP_ADMINISTRATOR, context=context)
        email_jobs_to_deliver = ScheduledJob.objects.filter(
            type=ScheduledJob.EMAIL,
            scheduled_timestamp__lte=timezone_now())
        self.assertEqual(len(email_jobs_to_deliver), 1)
        email_count = len(outbox)
        for job in email_jobs_to_deliver:
            self.assertTrue(send_email(**ujson.loads(job.data)))
        self.assertEqual(len(outbox), email_count + 1)

class InviteeEmailsParserTests(TestCase):
    def setUp(self):
        # type: () -> None
        self.email1 = "email1@zulip.com"
        self.email2 = "email2@zulip.com"
        self.email3 = "email3@zulip.com"

    def test_if_emails_separated_by_commas_are_parsed_and_striped_correctly(self):
        # type: () -> None
        emails_raw = "{} ,{}, {}".format(self.email1, self.email2, self.email3)
        expected_set = {self.email1, self.email2, self.email3}
        self.assertEqual(get_invitee_emails_set(emails_raw), expected_set)

    def test_if_emails_separated_by_newlines_are_parsed_and_striped_correctly(self):
        # type: () -> None
        emails_raw = "{}\n {}\n {} ".format(self.email1, self.email2, self.email3)
        expected_set = {self.email1, self.email2, self.email3}
        self.assertEqual(get_invitee_emails_set(emails_raw), expected_set)

    def test_if_emails_from_email_client_separated_by_newlines_are_parsed_correctly(self):
        # type: () -> None
        emails_raw = "Email One <{}>\nEmailTwo<{}>\nEmail Three<{}>".format(self.email1, self.email2, self.email3)
        expected_set = {self.email1, self.email2, self.email3}
        self.assertEqual(get_invitee_emails_set(emails_raw), expected_set)

    def test_if_emails_in_mixed_style_are_parsed_correctly(self):
        # type: () -> None
        emails_raw = "Email One <{}>,EmailTwo<{}>\n{}".format(self.email1, self.email2, self.email3)
        expected_set = {self.email1, self.email2, self.email3}
        self.assertEqual(get_invitee_emails_set(emails_raw), expected_set)


class EmailUnsubscribeTests(ZulipTestCase):
    def test_error_unsubscribe(self):
        # type: () -> None

        # An invalid insubscribe token "test123" produces an error.
        result = self.client_get('/accounts/unsubscribe/missed_messages/test123')
        self.assert_in_response('Unknown email unsubscribe request', result)

        # An unknown message type "fake" produces an error.
        user_profile = self.example_user('hamlet')
        unsubscribe_link = one_click_unsubscribe_link(user_profile, "fake")
        result = self.client_get(urllib.parse.urlparse(unsubscribe_link).path)
        self.assert_in_response('Unknown email unsubscribe request', result)

    def test_missedmessage_unsubscribe(self):
        # type: () -> None
        """
        We provide one-click unsubscribe links in missed message
        e-mails that you can click even when logged out to update your
        email notification settings.
        """
        user_profile = self.example_user('hamlet')
        user_profile.enable_offline_email_notifications = True
        user_profile.save()

        unsubscribe_link = one_click_unsubscribe_link(user_profile,
                                                      "missed_messages")
        result = self.client_get(urllib.parse.urlparse(unsubscribe_link).path)

        self.assertEqual(result.status_code, 200)
        # Circumvent user_profile caching.
        user_profile = UserProfile.objects.get(email="hamlet@zulip.com")
        self.assertFalse(user_profile.enable_offline_email_notifications)

    def test_welcome_unsubscribe(self):
        # type: () -> None
        """
        We provide one-click unsubscribe links in welcome e-mails that you can
        click even when logged out to stop receiving them.
        """
        email = "hamlet@zulip.com"
        user_profile = self.example_user('hamlet')

        # Simulate a new user signing up, which enqueues 2 welcome e-mails.
        enqueue_welcome_emails(email, "King Hamlet")
        self.assertEqual(2, len(ScheduledJob.objects.filter(
            type=ScheduledJob.EMAIL, filter_string__iexact=email)))

        # Simulate unsubscribing from the welcome e-mails.
        unsubscribe_link = one_click_unsubscribe_link(user_profile, "welcome")
        result = self.client_get(urllib.parse.urlparse(unsubscribe_link).path)

        # The welcome email jobs are no longer scheduled.
        self.assertEqual(result.status_code, 200)
        self.assertEqual(0, len(ScheduledJob.objects.filter(
            type=ScheduledJob.EMAIL, filter_string__iexact=email)))

    def test_digest_unsubscribe(self):
        # type: () -> None
        """
        We provide one-click unsubscribe links in digest e-mails that you can
        click even when logged out to stop receiving them.

        Unsubscribing from these emails also dequeues any digest email jobs that
        have been queued.
        """
        email = "hamlet@zulip.com"
        user_profile = self.example_user('hamlet')
        self.assertTrue(user_profile.enable_digest_emails)

        # Enqueue a fake digest email.
        context = {'name': '', 'realm_uri': '', 'unread_pms': [], 'hot_conversations': [],
                   'new_users': [], 'new_streams': {'plain': []}, 'unsubscribe_link': ''}
        send_future_email('zerver/emails/digest', display_email(user_profile), context=context)

        self.assertEqual(1, len(ScheduledJob.objects.filter(
            type=ScheduledJob.EMAIL, filter_string__iexact=email)))

        # Simulate unsubscribing from digest e-mails.
        unsubscribe_link = one_click_unsubscribe_link(user_profile, "digest")
        result = self.client_get(urllib.parse.urlparse(unsubscribe_link).path)

        # The setting is toggled off, and scheduled jobs have been removed.
        self.assertEqual(result.status_code, 200)
        # Circumvent user_profile caching.
        user_profile = UserProfile.objects.get(email="hamlet@zulip.com")
        self.assertFalse(user_profile.enable_digest_emails)
        self.assertEqual(0, len(ScheduledJob.objects.filter(
            type=ScheduledJob.EMAIL, filter_string__iexact=email)))

class RealmCreationTest(ZulipTestCase):

    def test_create_realm(self):
        # type: () -> None
        password = "test"
        string_id = "zuliptest"
        email = "user1@test.com"
        realm = get_realm('test')

        # Make sure the realm does not exist
        self.assertIsNone(realm)

        with self.settings(OPEN_REALM_CREATION=True):
            # Create new realm with the email
            result = self.client_post('/create_realm/', {'email': email})
            self.assertEqual(result.status_code, 302)
            self.assertTrue(result["Location"].endswith(
                "/accounts/send_confirm/%s" % (email,)))
            result = self.client_get(result["Location"])
            self.assert_in_response("Check your email so we can get started.", result)

            # Visit the confirmation link.
            confirmation_url = self.get_confirmation_url_from_outbox(email)
            result = self.client_get(confirmation_url)
            self.assertEqual(result.status_code, 200)

            result = self.submit_reg_form_for_user(email, password, realm_subdomain=string_id)
            self.assertEqual(result.status_code, 302)

            # Make sure the realm is created
            realm = get_realm(string_id)
            self.assertIsNotNone(realm)
            self.assertEqual(realm.string_id, string_id)
            self.assertEqual(get_user_profile_by_email(email).realm, realm)

            # Check defaults
            self.assertEqual(realm.org_type, Realm.COMMUNITY)
            self.assertEqual(realm.restricted_to_domain, False)
            self.assertEqual(realm.invite_required, True)

            self.assertTrue(result["Location"].endswith("/"))

    def test_create_realm_existing_email(self):
        # type: () -> None
        """
        Trying to create a realm with an existing email should just redirect to
        a login page.
        """
        with self.settings(OPEN_REALM_CREATION=True):
            email = 'hamlet@zulip.com'
            result = self.client_post('/create_realm/', {'email': email})
            self.assertEqual(result.status_code, 302)
            self.assertIn('login', result['Location'])

    def test_create_realm_no_creation_key(self):
        # type: () -> None
        """
        Trying to create a realm without a creation_key should fail when
        OPEN_REALM_CREATION is false.
        """
        email = "user1@test.com"
        realm = get_realm('test')

        # Make sure the realm does not exist
        self.assertIsNone(realm)

        with self.settings(OPEN_REALM_CREATION=False):
            # Create new realm with the email, but no creation key.
            result = self.client_post('/create_realm/', {'email': email})
            self.assertEqual(result.status_code, 200)
            self.assert_in_response('New organization creation disabled.', result)

    def test_create_realm_with_subdomain(self):
        # type: () -> None
        password = "test"
        string_id = "zuliptest"
        email = "user1@test.com"
        realm_name = "Test"

        # Make sure the realm does not exist
        self.assertIsNone(get_realm('test'))

        with self.settings(REALMS_HAVE_SUBDOMAINS=True), self.settings(OPEN_REALM_CREATION=True):
            # Create new realm with the email
            result = self.client_post('/create_realm/', {'email': email})
            self.assertEqual(result.status_code, 302)
            self.assertTrue(result["Location"].endswith(
                "/accounts/send_confirm/%s" % (email,)))
            result = self.client_get(result["Location"])
            self.assert_in_response("Check your email so we can get started.", result)

            # Visit the confirmation link.
            confirmation_url = self.get_confirmation_url_from_outbox(email)
            result = self.client_get(confirmation_url)
            self.assertEqual(result.status_code, 200)

            result = self.submit_reg_form_for_user(email, password,
                                                   realm_subdomain = string_id,
                                                   realm_name=realm_name,
                                                   # Pass HTTP_HOST for the target subdomain
                                                   HTTP_HOST=string_id + ".testserver")
            self.assertEqual(result.status_code, 302)

            # Make sure the realm is created
            realm = get_realm(string_id)
            self.assertIsNotNone(realm)
            self.assertEqual(realm.string_id, string_id)
            self.assertEqual(get_user_profile_by_email(email).realm, realm)

            self.assertEqual(realm.name, realm_name)
            self.assertEqual(realm.subdomain, string_id)

    def test_mailinator_signup(self):
        # type: () -> None
        with self.settings(OPEN_REALM_CREATION=True):
            result = self.client_post('/create_realm/', {'email': "hi@mailinator.com"})
            self.assert_in_response('Please use your real email address.', result)

    def test_subdomain_restrictions(self):
        # type: () -> None
        password = "test"
        email = "user1@test.com"
        realm_name = "Test"

        with self.settings(REALMS_HAVE_SUBDOMAINS=False), self.settings(OPEN_REALM_CREATION=True):
            result = self.client_post('/create_realm/', {'email': email})
            self.client_get(result["Location"])
            confirmation_url = self.get_confirmation_url_from_outbox(email)
            self.client_get(confirmation_url)

            errors = {'id': "at least 3 characters",
                      '-id': "cannot start or end with a",
                      'string-ID': "lowercase letters",
                      'string_id': "lowercase letters",
                      'stream': "unavailable",
                      'streams': "unavailable",
                      'about': "unavailable",
                      'abouts': "unavailable",
                      'zephyr': "unavailable"}
            for string_id, error_msg in errors.items():
                result = self.submit_reg_form_for_user(email, password,
                                                       realm_subdomain = string_id,
                                                       realm_name = realm_name)
                self.assert_in_response(error_msg, result)

            # test valid subdomain
            result = self.submit_reg_form_for_user(email, password,
                                                   realm_subdomain = 'a-0',
                                                   realm_name = realm_name)
            self.assertEqual(result.status_code, 302)

class UserSignUpTest(ZulipTestCase):

    def test_user_default_language_and_timezone(self):
        # type: () -> None
        """
        Check if the default language of new user is the default language
        of the realm.
        """
        email = "newguy@zulip.com"
        password = "newpassword"
        timezone = "US/Mountain"
        realm = get_realm('zulip')
        do_set_realm_property(realm, 'default_language', u"de")

        result = self.client_post('/accounts/home/', {'email': email})
        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/send_confirm/%s" % (email,)))
        result = self.client_get(result["Location"])
        self.assert_in_response("Check your email so we can get started.", result)

        # Visit the confirmation link.
        confirmation_url = self.get_confirmation_url_from_outbox(email)
        result = self.client_get(confirmation_url)
        self.assertEqual(result.status_code, 200)

        # Pick a password and agree to the ToS.
        result = self.submit_reg_form_for_user(email, password, timezone=timezone)
        self.assertEqual(result.status_code, 302)

        user_profile = get_user_profile_by_email(email)
        self.assertEqual(user_profile.default_language, realm.default_language)
        self.assertEqual(user_profile.timezone, timezone)
        from django.core.mail import outbox
        outbox.pop()

    def test_signup_already_active(self):
        # type: () -> None
        """
        Check if signing up with an active email redirects to a login page.
        """
        email = 'hamlet@zulip.com'
        result = self.client_post('/accounts/home/', {'email': email})
        self.assertEqual(result.status_code, 302)
        self.assertIn('login', result['Location'])

    def test_signup_invalid_name(self):
        # type: () -> None
        """
        Check if an invalid name during signup is handled properly.
        """
        email = "newguy@zulip.com"
        password = "newpassword"

        result = self.client_post('/accounts/home/', {'email': email})
        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/send_confirm/%s" % (email,)))
        result = self.client_get(result["Location"])
        self.assert_in_response("Check your email so we can get started.", result)

        # Visit the confirmation link.
        confirmation_url = self.get_confirmation_url_from_outbox(email)
        result = self.client_get(confirmation_url)
        self.assertEqual(result.status_code, 200)

        # Pick a password and agree to the ToS.
        result = self.submit_reg_form_for_user(email, password, full_name="<invalid>")
        self.assert_in_success_response(["Invalid characters in name!"], result)

    def test_signup_without_password(self):
        # type: () -> None
        """
        Check if signing up without a password works properly when
        password_auth_enabled is False.
        """

        email = "newuser@zulip.com"

        result = self.client_post('/accounts/home/', {'email': email})
        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/send_confirm/%s" % (email,)))
        result = self.client_get(result["Location"])
        self.assert_in_response("Check your email so we can get started.", result)

        # Visit the confirmation link.
        confirmation_url = self.get_confirmation_url_from_outbox(email)
        result = self.client_get(confirmation_url)
        self.assertEqual(result.status_code, 200)

        with patch('zerver.views.registration.password_auth_enabled', return_value=False):
            result = self.client_post(
                '/accounts/register/',
                {'full_name': 'New User',
                 'realm_name': 'Zulip Test',
                 'realm_subdomain': 'zuliptest',
                 'key': find_key_by_email(email),
                 'realm_org_type': Realm.COMMUNITY,
                 'terms': True})

        # User should now be logged in.
        self.assertEqual(result.status_code, 302)
        user_profile = get_user_profile_by_email(email)
        self.assertEqual(get_session_dict_user(self.client.session), user_profile.id)

    def test_signup_without_full_name(self):
        # type: () -> None
        """
        Check if signing up without a full name redirects to a registration
        form.
        """
        email = "newguy@zulip.com"
        password = "newpassword"

        result = self.client_post('/accounts/home/', {'email': email})
        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/send_confirm/%s" % (email,)))
        result = self.client_get(result["Location"])
        self.assert_in_response("Check your email so we can get started.", result)

        # Visit the confirmation link.
        confirmation_url = self.get_confirmation_url_from_outbox(email)
        result = self.client_get(confirmation_url)
        self.assertEqual(result.status_code, 200)

        result = self.client_post(
            '/accounts/register/',
            {'password': password,
             'realm_name': 'Zulip Test',
             'realm_subdomain': 'zuliptest',
             'key': find_key_by_email(email),
             'realm_org_type': Realm.COMMUNITY,
             'terms': True,
             'from_confirmation': '1'})
        self.assert_in_success_response(["You're almost there."], result)

    def test_signup_invalid_subdomain(self):
        # type: () -> None
        """
        Check if attempting to authenticate to the wrong subdomain logs an
        error and redirects.
        """
        email = "newuser@zulip.com"
        password = "newpassword"

        result = self.client_post('/accounts/home/', {'email': email})
        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/send_confirm/%s" % (email,)))
        result = self.client_get(result["Location"])
        self.assert_in_response("Check your email so we can get started.", result)

        # Visit the confirmation link.
        confirmation_url = self.get_confirmation_url_from_outbox(email)
        result = self.client_get(confirmation_url)
        self.assertEqual(result.status_code, 200)

        def invalid_subdomain(**kwargs):
            # type: (**Any) -> Any
            return_data = kwargs.get('return_data', {})
            return_data['invalid_subdomain'] = True

        with patch('zerver.views.registration.authenticate', side_effect=invalid_subdomain):
            with patch('logging.error') as mock_error:
                result = self.client_post(
                    '/accounts/register/',
                    {'password': password,
                     'full_name': 'New User',
                     'realm_name': 'Zulip Test',
                     'realm_subdomain': 'zuliptest',
                     'key': find_key_by_email(email),
                     'realm_org_type': Realm.COMMUNITY,
                     'terms': True})
        mock_error.assert_called_once()
        self.assertEqual(result.status_code, 302)

    def test_unique_completely_open_domain(self):
        # type: () -> None
        password = "test"
        email = "user1@acme.com"
        subdomain = "zulip"
        realm_name = "Zulip"

        realm = get_realm('zulip')
        realm.restricted_to_domain = False
        realm.invite_required = False
        realm.save()

        for string_id in ('simple', 'zephyr'):
            realm = get_realm(string_id)
            do_deactivate_realm(realm)
            realm.save()

        result = self.client_post('/register/', {'email': email})

        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/send_confirm/%s" % (email,)))
        result = self.client_get(result["Location"])
        self.assert_in_response("Check your email so we can get started.", result)
        # Visit the confirmation link.
        from django.core.mail import outbox
        for message in reversed(outbox):
            if email in message.to:
                confirmation_link_pattern = re.compile(settings.EXTERNAL_HOST + "(\S+)>")
                confirmation_url = confirmation_link_pattern.search(
                    message.body).groups()[0]
                break
        else:
            raise AssertionError("Couldn't find a confirmation email.")

        result = self.client_get(confirmation_url)
        self.assertEqual(result.status_code, 200)

        result = self.submit_reg_form_for_user(email,
                                               password,
                                               realm_name=realm_name,
                                               realm_subdomain=subdomain,
                                               # Pass HTTP_HOST for the target subdomain
                                               HTTP_HOST=subdomain + ".testserver")
        self.assert_in_success_response(["You're almost there."], result)

    def test_completely_open_domain_success(self):
        # type: () -> None
        password = "test"
        email = "user1@acme.com"
        subdomain = "zulip"
        realm_name = "Zulip"

        realm = get_realm('zulip')
        realm.restricted_to_domain = False
        realm.invite_required = False
        realm.save()

        result = self.client_post('/register/zulip/', {'email': email})

        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/send_confirm/%s" % (email,)))
        result = self.client_get(result["Location"])
        self.assert_in_response("Check your email so we can get started.", result)
        # Visit the confirmation link.
        from django.core.mail import outbox
        for message in reversed(outbox):
            if email in message.to:
                confirmation_link_pattern = re.compile(settings.EXTERNAL_HOST + "(\S+)>")
                confirmation_url = confirmation_link_pattern.search(
                    message.body).groups()[0]
                break
        else:
            raise AssertionError("Couldn't find a confirmation email.")

        result = self.client_get(confirmation_url)
        self.assertEqual(result.status_code, 200)

        result = self.submit_reg_form_for_user(email,
                                               password,
                                               realm_name=realm_name,
                                               realm_subdomain=subdomain,
                                               # Pass HTTP_HOST for the target subdomain
                                               HTTP_HOST=subdomain + ".testserver")
        self.assert_in_success_response(["You're almost there."], result)

    def test_failed_signup_with_realm_str(self):
        # type: () -> None
        """
        Signing up with the special accounts_home_with_realm_str endpoint should
        fail (i.e. redirect to the standard accounts_home) if
        settings.REALMS_HAVE_SUBDOMAINS is true, or if the realm is not
        completely open.
        """
        realm = get_realm('zulip')
        realm.restricted_to_domain = False
        realm.invite_required = False
        realm.save()
        with self.settings(REALMS_HAVE_SUBDOMAINS=True):
            email = 'user1@acme.com'
            result = self.client_post('/register/zulip/', {'email': email})
            self.assertEqual(result.status_code, 302)
            self.assertIn('accounts/home', result['Location'])

        realm = get_realm('zulip')
        realm.invite_required = True
        realm.save()
        with self.settings(REALMS_HAVE_SUBDOMAINS=False):
            email = 'user1@acme.com'
            result = self.client_post('/register/zulip/', {'email': email})
            self.assertEqual(result.status_code, 302)
            self.assertIn('accounts/home', result['Location'])

    def test_failed_signup_due_to_restricted_domain(self):
        # type: () -> None
        realm = get_realm('zulip')
        realm.invite_required = False
        realm.save()
        with self.settings(REALMS_HAVE_SUBDOMAINS = True):
            request = HostRequestMock(host = realm.host)
            request.session = {} # type: ignore
            email = 'user@acme.com'
            form = HomepageForm({'email': email}, realm=realm)
            self.assertIn("Your email address, {}, is not in one of the domains".format(email),
                          form.errors['email'][0])

    def test_failed_signup_due_to_invite_required(self):
        # type: () -> None
        realm = get_realm('zulip')
        realm.invite_required = True
        realm.save()
        request = HostRequestMock(host = realm.host)
        request.session = {} # type: ignore
        email = 'user@zulip.com'
        form = HomepageForm({'email': email}, realm=realm)
        self.assertIn("Please request an invite for {} from".format(email),
                      form.errors['email'][0])

    def test_failed_signup_due_to_nonexistent_realm(self):
        # type: () -> None
        with self.settings(REALMS_HAVE_SUBDOMAINS = True):
            request = HostRequestMock(host = 'acme.' + settings.EXTERNAL_HOST)
            request.session = {} # type: ignore
            email = 'user@acme.com'
            form = HomepageForm({'email': email}, realm=None)
            self.assertIn("organization you are trying to join using {} does "
                          "not exist".format(email), form.errors['email'][0])

    def test_registration_through_ldap(self):
        # type: () -> None
        password = "testing"
        email = "newuser@zulip.com"
        subdomain = "zulip"
        realm_name = "Zulip"
        ldap_user_attr_map = {'full_name': 'fn', 'short_name': 'sn'}

        ldap_patcher = patch('django_auth_ldap.config.ldap.initialize')
        mock_initialize = ldap_patcher.start()
        mock_ldap = MockLDAP()
        mock_initialize.return_value = mock_ldap

        mock_ldap.directory = {
            'uid=newuser,ou=users,dc=zulip,dc=com': {
                'userPassword': 'testing',
                'fn': ['New User Name']
            }
        }

        with patch('zerver.views.registration.get_subdomain', return_value=subdomain):
            result = self.client_post('/register/', {'email': email})

        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/send_confirm/%s" % (email,)))
        result = self.client_get(result["Location"])
        self.assert_in_response("Check your email so we can get started.", result)
        # Visit the confirmation link.
        from django.core.mail import outbox
        for message in reversed(outbox):
            if email in message.to:
                confirmation_link_pattern = re.compile(settings.EXTERNAL_HOST + "(\S+)>")
                confirmation_url = confirmation_link_pattern.search(
                    message.body).groups()[0]
                break
        else:
            raise AssertionError("Couldn't find a confirmation email.")

        with self.settings(
                POPULATE_PROFILE_VIA_LDAP=True,
                LDAP_APPEND_DOMAIN='zulip.com',
                AUTH_LDAP_BIND_PASSWORD='',
                AUTH_LDAP_USER_ATTR_MAP=ldap_user_attr_map,
                AUTHENTICATION_BACKENDS=('zproject.backends.ZulipLDAPAuthBackend',),
                AUTH_LDAP_USER_DN_TEMPLATE='uid=%(user)s,ou=users,dc=zulip,dc=com'):
            result = self.client_get(confirmation_url)
            self.assertEqual(result.status_code, 200)

            # The full_name should not be overriden by the value from LDAP if
            # request.session['authenticated_full_name'] has not been set yet.
            with patch('zerver.views.registration.name_changes_disabled', return_value=True):
                result = self.submit_reg_form_for_user(email,
                                                       password,
                                                       full_name="Non LDAP Full Name",
                                                       realm_name=realm_name,
                                                       realm_subdomain=subdomain,
                                                       # Pass HTTP_HOST for the target subdomain
                                                       HTTP_HOST=subdomain + ".testserver")
            self.assert_in_success_response(["You're almost there.",
                                             "Non LDAP Full Name",
                                             "newuser@zulip.com"],
                                            result)

            # Submitting the registration form with from_confirmation='1' sets
            # the value of request.session['authenticated_full_name'] from LDAP.
            result = self.submit_reg_form_for_user(email,
                                                   password,
                                                   realm_name=realm_name,
                                                   realm_subdomain=subdomain,
                                                   from_confirmation='1',
                                                   # Pass HTTP_HOST for the target subdomain
                                                   HTTP_HOST=subdomain + ".testserver")
            self.assert_in_success_response(["You're almost there.",
                                             "New User Name",
                                             "newuser@zulip.com"],
                                            result)

            # The full name be populated from the value of
            # request.session['authenticated_full_name'] from LDAP in the case
            # where from_confirmation and name_changes_disabled are both False.
            with patch('zerver.views.registration.name_changes_disabled', return_value=True):
                result = self.submit_reg_form_for_user(email,
                                                       password,
                                                       full_name="Non LDAP Full Name",
                                                       realm_name=realm_name,
                                                       realm_subdomain=subdomain,
                                                       # Pass HTTP_HOST for the target subdomain
                                                       HTTP_HOST=subdomain + ".testserver")
            self.assert_in_success_response(["You're almost there.",
                                             "New User Name",
                                             "newuser@zulip.com"],
                                            result)

            # Test the TypeError exception handler
            mock_ldap.directory = {
                'uid=newuser,ou=users,dc=zulip,dc=com': {
                    'userPassword': 'testing',
                    'fn': None  # This will raise TypeError
                }
            }
            result = self.submit_reg_form_for_user(email,
                                                   password,
                                                   realm_name=realm_name,
                                                   realm_subdomain=subdomain,
                                                   from_confirmation='1',
                                                   # Pass HTTP_HOST for the target subdomain
                                                   HTTP_HOST=subdomain + ".testserver")
            self.assert_in_success_response(["You're almost there.",
                                             "newuser@zulip.com"],
                                            result)

        mock_ldap.reset()
        mock_initialize.stop()

    @patch('DNS.dnslookup', return_value=[['sipbtest:*:20922:101:Fred Sipb,,,:/mit/sipbtest:/bin/athena/tcsh']])
    def test_registration_email_for_mirror_dummy_user(self, ignored):
        # type: (Any) -> None
        email = 'sipbtest@mit.edu'

        user_profile = get_user_profile_by_email(email)
        user_profile.is_mirror_dummy = True
        user_profile.is_active = False
        user_profile.save()

        with self.settings(REALMS_HAVE_SUBDOMAINS=True):
            with patch('zerver.forms.get_subdomain', return_value='zephyr'):
                with patch('zerver.views.registration.get_subdomain', return_value='zephyr'):
                    result = self.client_post('/accounts/home/', {'email': email})
                    self.assertEqual(result.status_code, 302)

        from django.core.mail import outbox
        for message in reversed(outbox):
            if email in message.to:
                # The main difference between the zephyr registation email
                # and the normal one is this string
                index = message.body.find('https://zephyr.zulipchat.com/zephyr')
                if index >= 0:
                    return
        else:
            raise AssertionError("Couldn't find the right confirmation email.")

    @patch('DNS.dnslookup', return_value=[['sipbtest:*:20922:101:Fred Sipb,,,:/mit/sipbtest:/bin/athena/tcsh']])
    def test_registration_of_mirror_dummy_user(self, ignored):
        # type: (Any) -> None
        password = "test"
        email = "sipbtest@mit.edu"
        subdomain = "sipb"
        realm_name = "MIT"

        user_profile = get_user_profile_by_email(email)
        user_profile.is_mirror_dummy = True
        user_profile.is_active = False
        user_profile.save()

        result = self.client_post('/register/', {'email': email})

        self.assertEqual(result.status_code, 302)
        self.assertTrue(result["Location"].endswith(
            "/accounts/send_confirm/%s" % (email,)))
        result = self.client_get(result["Location"])
        self.assert_in_response("Check your email so we can get started.", result)
        # Visit the confirmation link.
        from django.core.mail import outbox
        for message in reversed(outbox):
            if email in message.to:
                confirmation_link_pattern = re.compile(settings.EXTERNAL_HOST + "(\S+)>")
                confirmation_url = confirmation_link_pattern.search(
                    message.body).groups()[0]
                break
        else:
            raise AssertionError("Couldn't find a confirmation email.")

        result = self.client_get(confirmation_url)
        self.assertEqual(result.status_code, 200)

        # If the mirror dummy user is already active, attempting to submit the
        # registration form should just redirect to a login page.
        user_profile.is_active = True
        user_profile.save()
        result = self.submit_reg_form_for_user(email,
                                               password,
                                               realm_name=realm_name,
                                               realm_subdomain=subdomain,
                                               from_confirmation='1',
                                               # Pass HTTP_HOST for the target subdomain
                                               HTTP_HOST=subdomain + ".testserver")
        self.assertEqual(result.status_code, 302)
        self.assertIn('login', result['Location'])
        user_profile.is_active = False
        user_profile.save()

        result = self.submit_reg_form_for_user(email,
                                               password,
                                               realm_name=realm_name,
                                               realm_subdomain=subdomain,
                                               from_confirmation='1',
                                               # Pass HTTP_HOST for the target subdomain
                                               HTTP_HOST=subdomain + ".testserver")
        self.assertEqual(result.status_code, 200)
        result = self.submit_reg_form_for_user(email,
                                               password,
                                               realm_name=realm_name,
                                               realm_subdomain=subdomain,
                                               # Pass HTTP_HOST for the target subdomain
                                               HTTP_HOST=subdomain + ".testserver")
        self.assertEqual(result.status_code, 302)
        self.assertEqual(get_session_dict_user(self.client.session), user_profile.id)

    def test_registration_of_active_mirror_dummy_user(self):
        # type: (Any) -> None
        """
        Trying to activate an already-active mirror dummy user should just
        redirect to a login page.
        """
        email = "sipbtest@mit.edu"

        user_profile = get_user_profile_by_email(email)
        user_profile.is_mirror_dummy = True
        user_profile.is_active = True
        user_profile.save()

        result = self.client_post('/register/', {'email': email})

        self.assertEqual(result.status_code, 302)
        self.assertIn('login', result['Location'])

class TestOpenRealms(ZulipTestCase):
    def test_open_realm_logic(self):
        # type: () -> None
        realm = get_realm('simple')
        do_deactivate_realm(realm)

        mit_realm = get_realm("zephyr")
        self.assertEqual(get_unique_open_realm(), None)
        mit_realm.restricted_to_domain = False
        mit_realm.save()
        self.assertTrue(completely_open(mit_realm))
        self.assertEqual(get_unique_open_realm(), None)
        with self.settings(SYSTEM_ONLY_REALMS={"zulip"}):
            self.assertEqual(get_unique_open_realm(), mit_realm)
        mit_realm.restricted_to_domain = True
        mit_realm.save()

class DeactivateUserTest(ZulipTestCase):

    def test_deactivate_user(self):
        # type: () -> None
        email = 'hamlet@zulip.com'
        self.login(email)
        user = self.example_user('hamlet')
        self.assertTrue(user.is_active)
        result = self.client_delete('/json/users/me')
        self.assert_json_success(result)
        user = self.example_user('hamlet')
        self.assertFalse(user.is_active)
        self.login(email, fails=True)

    def test_do_not_deactivate_final_admin(self):
        # type: () -> None
        email = 'iago@zulip.com'
        self.login(email)
        user = self.example_user('iago')
        self.assertTrue(user.is_active)
        result = self.client_delete('/json/users/me')
        self.assert_json_error(result, "Cannot deactivate the only organization administrator")
        user = self.example_user('iago')
        self.assertTrue(user.is_active)
        self.assertTrue(user.is_realm_admin)
        email = 'hamlet@zulip.com'
        user_2 = self.example_user('hamlet')
        do_change_is_admin(user_2, True)
        self.assertTrue(user_2.is_realm_admin)
        result = self.client_delete('/json/users/me')
        self.assert_json_success(result)
        do_change_is_admin(user, True)

class TestLoginPage(ZulipTestCase):
    def test_login_page_wrong_subdomain_error(self):
        # type: () -> None
        result = self.client_get("/login/?subdomain=1")
        self.assertIn(WRONG_SUBDOMAIN_ERROR, result.content.decode('utf8'))

    @patch('django.http.HttpRequest.get_host')
    def test_login_page_redirects_for_root_alias(self, mock_get_host):
        # type: (MagicMock) -> None
        mock_get_host.return_value = 'www.testserver'
        with self.settings(REALMS_HAVE_SUBDOMAINS=True,
                           ROOT_SUBDOMAIN_ALIASES=['www']):
            result = self.client_get("/en/login/")
            self.assertEqual(result.status_code, 302)
            self.assertEqual(result.url, '/find_my_team/')

    @patch('django.http.HttpRequest.get_host')
    def test_login_page_redirects_for_root_domain(self, mock_get_host):
        # type: (MagicMock) -> None
        mock_get_host.return_value = 'testserver'
        with self.settings(REALMS_HAVE_SUBDOMAINS=True,
                           ROOT_SUBDOMAIN_ALIASES=['www']):
            result = self.client_get("/en/login/")
            self.assertEqual(result.status_code, 302)
            self.assertEqual(result.url, '/find_my_team/')

        mock_get_host.return_value = 'www.testserver.com'
        with self.settings(REALMS_HAVE_SUBDOMAINS=True,
                           EXTERNAL_HOST='www.testserver.com',
                           ROOT_SUBDOMAIN_ALIASES=['test']):
            result = self.client_get("/en/login/")
            self.assertEqual(result.status_code, 302)
            self.assertEqual(result.url, '/find_my_team/')

    @patch('django.http.HttpRequest.get_host')
    def test_login_page_works_without_subdomains(self, mock_get_host):
        # type: (MagicMock) -> None
        mock_get_host.return_value = 'www.testserver'
        with self.settings(ROOT_SUBDOMAIN_ALIASES=['www']):
            result = self.client_get("/en/login/")
            self.assertEqual(result.status_code, 200)

        mock_get_host.return_value = 'testserver'
        with self.settings(ROOT_SUBDOMAIN_ALIASES=['www']):
            result = self.client_get("/en/login/")
            self.assertEqual(result.status_code, 200)

class TestFindMyTeam(ZulipTestCase):
    def test_template(self):
        # type: () -> None
        result = self.client_get('/find_my_team/')
        self.assertIn("Find your team", result.content.decode('utf8'))

    def test_result(self):
        # type: () -> None
        url = '/find_my_team/?emails=iago@zulip.com,cordelia@zulip.com'
        result = self.client_get(url)
        content = result.content.decode('utf8')
        self.assertIn("Emails sent! You will only receive emails", content)
        self.assertIn("iago@zulip.com", content)
        self.assertIn("cordelia@zulip.com", content)

    def test_find_team_ignore_invalid_email(self):
        # type: () -> None
        url = '/find_my_team/?emails=iago@zulip.com,invalid_email'
        result = self.client_get(url)
        content = result.content.decode('utf8')
        self.assertIn("Emails sent! You will only receive emails", content)
        self.assertIn("iago@zulip.com", content)
        self.assertNotIn("invalid_email", content)

    def test_find_team_zero_emails(self):
        # type: () -> None
        data = {'emails': ''}
        result = self.client_post('/find_my_team/', data)
        self.assertIn('This field is required', result.content.decode('utf8'))
        self.assertEqual(result.status_code, 200)

    def test_find_team_one_email(self):
        # type: () -> None
        data = {'emails': 'hamlet@zulip.com'}
        result = self.client_post('/find_my_team/', data)
        self.assertEqual(result.status_code, 302)
        self.assertEqual(result.url, '/find_my_team/?emails=hamlet%40zulip.com')

    def test_find_team_multiple_emails(self):
        # type: () -> None
        data = {'emails': 'hamlet@zulip.com,iago@zulip.com'}
        result = self.client_post('/find_my_team/', data)
        self.assertEqual(result.status_code, 302)
        expected = '/find_my_team/?emails=hamlet%40zulip.com%2Ciago%40zulip.com'
        self.assertEqual(result.url, expected)

    def test_find_team_more_than_ten_emails(self):
        # type: () -> None
        data = {'emails': ','.join(['hamlet-{}@zulip.com'.format(i) for i in range(11)])}
        result = self.client_post('/find_my_team/', data)
        self.assertEqual(result.status_code, 200)
        self.assertIn("Please enter at most 10", result.content.decode('utf8'))

class ConfirmationKeyTest(ZulipTestCase):
    def test_confirmation_key(self):
        # type: () -> None
        request = MagicMock()
        request.session = {
            'confirmation_key': {'confirmation_key': 'xyzzy'}
        }
        result = confirmation_key(request)
        self.assert_json_success(result)
        self.assert_in_response('xyzzy', result)

class MobileAuthOTPTest(ZulipTestCase):
    def test_xor_hex_strings(self):
        # type: () -> None
        self.assertEqual(xor_hex_strings('1237c81ab', '18989fd12'), '0aaf57cb9')
        with self.assertRaises(AssertionError):
            xor_hex_strings('1', '31')

    def test_is_valid_otp(self):
        # type: () -> None
        self.assertEqual(is_valid_otp('1234'), False)
        self.assertEqual(is_valid_otp('1234abcd' * 8), True)
        self.assertEqual(is_valid_otp('1234abcZ' * 8), False)

    def test_ascii_to_hex(self):
        # type: () -> None
        self.assertEqual(ascii_to_hex('ZcdR1234'), '5a63645231323334')
        self.assertEqual(hex_to_ascii('5a63645231323334'), 'ZcdR1234')

    def test_otp_encrypt_api_key(self):
        # type: () -> None
        hamlet = self.example_user('hamlet')
        hamlet.api_key = '12ac' * 8
        otp = '7be38894' * 8
        result = otp_encrypt_api_key(hamlet, otp)
        self.assertEqual(result, '4ad1e9f7' * 8)

        decryped = otp_decrypt_api_key(result, otp)
        self.assertEqual(decryped, hamlet.api_key)