Make the studio login over the lms optional using a feature flag

cms/envs/production.py

@@ -298,6 +298,10 @@ HEARTBEAT_CHECKS = ENV_TOKENS.get('HEARTBEAT_CHECKS', HEARTBEAT_CHECKS)
 HEARTBEAT_EXTENDED_CHECKS = ENV_TOKENS.get('HEARTBEAT_EXTENDED_CHECKS', HEARTBEAT_EXTENDED_CHECKS)
 HEARTBEAT_CELERY_TIMEOUT = ENV_TOKENS.get('HEARTBEAT_CELERY_TIMEOUT', HEARTBEAT_CELERY_TIMEOUT)
 
+# Login using the LMS as the identity provider
+if FEATURES.get('DISABLE_STUDIO_SSO_OVER_LMS', False):
+    LOGIN_URL = EDX_ROOT_URL + '/signin'
+
 # Specific setting for the File Upload Service to store media in a bucket.
 FILE_UPLOAD_STORAGE_BUCKET_NAME = ENV_TOKENS.get('FILE_UPLOAD_STORAGE_BUCKET_NAME', FILE_UPLOAD_STORAGE_BUCKET_NAME)
 FILE_UPLOAD_STORAGE_PREFIX = ENV_TOKENS.get('FILE_UPLOAD_STORAGE_PREFIX', FILE_UPLOAD_STORAGE_PREFIX)

cms/templates/widgets/header.html

@@ -230,8 +230,15 @@
 
     % else:
       <%
-        login_url = settings.LMS_ROOT_URL + '/login'
         register_url = settings.LMS_ROOT_URL + '/register'
+
+        if settings.FEATURES.get('DISABLE_STUDIO_SSO_OVER_LMS', False):
+          login_url = settings.LOGIN_URL
+        else:
+          login_url = '{lms_root_url}/login?next={next_url}'.format(
+            lms_root_url=settings.LMS_ROOT_URL,
+            next_url=current_url,
+          )
       %>
       <nav class="nav-not-signedin nav-pitch" aria-label="${_('Account')}">
         <h2 class="sr-only">${_("Account Navigation")}</h2>
@@ -245,7 +252,7 @@
               </li>
           % endif
           <li class="nav-item nav-not-signedin-signin">
-            <a class="action action-signin" href="${login_url}?next=${current_url}">${_("Sign In")}</a>
+            <a class="action action-signin" href="${login_url}">${_("Sign In")}</a>
           </li>
         </ol>
       </nav>

cms/templates/widgets/user_dropdown.html

@@ -40,7 +40,13 @@
     <span class="icon fa fa-caret-down ui-toggle-dd" aria-hidden="true"></span>
   </h3>
   <%
-    logout_url = settings.LMS_ROOT_URL + '/logout'
+        if settings.FEATURES.get('DISABLE_STUDIO_SSO_OVER_LMS', False):
+          logout_url = reverse('logout')
+        else:
+          logout_url = '{lms_root_url}/logout?next={next_url}'.format(
+            lms_root_url=settings.LMS_ROOT_URL,
+            next_url=current_site_url,
+          )
   %>
   <div class="wrapper wrapper-nav-sub">
     <div class="nav-sub">
@@ -54,7 +60,7 @@
         </li>
         % endif
         <li class="nav-item nav-account-signout">
-          <a class="action action-signout" href="${logout_url}?next=${current_site_url}">${_("Sign Out")}</a>
+          <a class="action action-signout" href="${logout_url}">${_("Sign Out")}</a>
         </li>
       </ul>
     </div>