Show realm deactivation notice for login/register.

Fixes #6247

zerver/views/auth.py

@@ -32,7 +32,7 @@ from zerver.lib.validator import validate_login_email
 from zerver.models import PreregistrationUser, UserProfile, remote_user_to_email, Realm, \
     get_realm
 from zerver.views.registration import create_preregistration_user, get_realm_from_request, \
-    redirect_and_log_into_subdomain
+    redirect_and_log_into_subdomain, redirect_to_deactivation_notice
 from zerver.signals import email_on_new_login
 from zproject.backends import password_auth_enabled, dev_auth_enabled, \
     github_auth_enabled, google_auth_enabled, ldap_auth_enabled
@@ -465,6 +465,10 @@ def login_page(request, **kwargs):
         redirect_url = reverse('zerver.views.registration.find_my_team')
         return HttpResponseRedirect(redirect_url)
 
+    realm = get_realm_from_request(request)
+    if realm and realm.deactivated:
+        return redirect_to_deactivation_notice()
+
     extra_context = kwargs.pop('extra_context', {})
     if dev_auth_enabled():
         if 'new_realm' in request.POST:

zerver/views/registration.py

@@ -340,9 +340,25 @@ def get_realm_from_request(request):
         realm_str = None
     return get_realm(realm_str)
 
+def show_deactivation_notice(request):
+    # type: (HttpRequest) -> HttpResponse
+    realm = get_realm_from_request(request)
+    if realm and realm.deactivated:
+        return render(request, "zerver/deactivated.html",
+                      context={"deactivated_domain_name": realm.name})
+
+    return HttpResponseRedirect(reverse('zerver.views.auth.login_page'))
+
+def redirect_to_deactivation_notice():
+    # type: () -> HttpResponse
+    return HttpResponseRedirect(reverse('zerver.views.registration.show_deactivation_notice'))
+
 def accounts_home(request):
     # type: (HttpRequest) -> HttpResponse
     realm = get_realm_from_request(request)
+    if realm and realm.deactivated:
+        return redirect_to_deactivation_notice()
+
     if request.method == 'POST':
         form = HomepageForm(request.POST, realm=realm)
         if form.is_valid():

zproject/urls.py

@@ -95,6 +95,9 @@ i18n_urls = [
         name='django.contrib.auth.views.password_reset_confirm'),
     url(r'^accounts/password/done/$', password_reset_complete,
         {'template_name': 'zerver/reset_done.html'}),
+    url(r'^accounts/deactivated/',
+        zerver.views.registration.show_deactivation_notice,
+        name='zerver.views.registration.show_deactivation_notice'),
 
     # Avatar
     url(r'^avatar/(?P<email_or_id>[\S]+)?/(?P<medium>[\S]+)?', zerver.views.users.avatar, name='zerver.views.users.avatar'),