Config option to disable requesting MSISDN on registration

1 files changed, 5 insertions, 11 deletions

diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py
index aec0c6b075..14025cd219 100644
--- a/synapse/rest/client/v2_alpha/register.py
+++ b/synapse/rest/client/v2_alpha/register.py
@@ -309,22 +309,16 @@ class RegisterRestServlet(RestServlet):
                 assigned_user_id=registered_user_id,
             )
 
-        # Only give msisdn flows if the x_show_msisdn flag is given:
-        # this is a hack to work around the fact that clients were shipped
-        # that use fallback registration if they see any flows that they don't
-        # recognise, which means we break registration for these clients if we
-        # advertise msisdn flows. Once usage of Riot iOS <=0.3.9 and Riot
-        # Android <=0.6.9 have fallen below an acceptable threshold, this
-        # parameter should go away and we should always advertise msisdn flows.
-        show_msisdn = False
-        if 'x_show_msisdn' in body and body['x_show_msisdn']:
-            show_msisdn = True
-
         # FIXME: need a better error than "no auth flow found" for scenarios
         # where we required 3PID for registration but the user didn't give one
         require_email = 'email' in self.hs.config.registrations_require_3pid
         require_msisdn = 'msisdn' in self.hs.config.registrations_require_3pid
 
+        show_msisdn = True
+        if self.hs.config.disable_msisdn_registration:
+            show_msisdn = False
+            require_msisdn = False
+
         flows = []
         if self.hs.config.enable_registration_captcha:
             # only support 3PIDless registration if no 3PIDs are required