add registrations_require_3pid

lets homeservers specify a whitelist for 3PIDs that users are allowed to associate with.
Typically useful for stopping people from registering with non-work emails

1 files changed, 13 insertions, 1 deletions

diff --git a/synapse/rest/client/v2_alpha/account.py b/synapse/rest/client/v2_alpha/account.py
index 385a3ad2ec..66221e8f00 100644
--- a/synapse/rest/client/v2_alpha/account.py
+++ b/synapse/rest/client/v2_alpha/account.py
@@ -26,7 +26,7 @@ from synapse.http.servlet import (
 )
 from synapse.util.async import run_on_reactor
 from synapse.util.msisdn import phone_number_to_msisdn
-from ._base import client_v2_patterns, interactive_auth_handler
+from ._base import client_v2_patterns, interactive_auth_handler, check_3pid_allowed
 
 logger = logging.getLogger(__name__)
 
@@ -47,6 +47,9 @@ class EmailPasswordRequestTokenRestServlet(RestServlet):
             'id_server', 'client_secret', 'email', 'send_attempt'
         ])
 
+        if not check_3pid_allowed(self.hs, "email", body['email']):
+            raise SynapseError(403, "3PID denied", Codes.THREEPID_DENIED)
+
         existingUid = yield self.hs.get_datastore().get_user_id_by_threepid(
             'email', body['email']
         )
@@ -78,6 +81,9 @@ class MsisdnPasswordRequestTokenRestServlet(RestServlet):
 
         msisdn = phone_number_to_msisdn(body['country'], body['phone_number'])
 
+        if not check_3pid_allowed(self.hs, "msisdn", msisdn):
+            raise SynapseError(403, "3PID denied", Codes.THREEPID_DENIED)
+
         existingUid = yield self.datastore.get_user_id_by_threepid(
             'msisdn', msisdn
         )
@@ -217,6 +223,9 @@ class EmailThreepidRequestTokenRestServlet(RestServlet):
         if absent:
             raise SynapseError(400, "Missing params: %r" % absent, Codes.MISSING_PARAM)
 
+        if not check_3pid_allowed(self.hs, "email", body['email']):
+            raise SynapseError(403, "3PID denied", Codes.THREEPID_DENIED)
+
         existingUid = yield self.datastore.get_user_id_by_threepid(
             'email', body['email']
         )
@@ -255,6 +264,9 @@ class MsisdnThreepidRequestTokenRestServlet(RestServlet):
 
         msisdn = phone_number_to_msisdn(body['country'], body['phone_number'])
 
+        if not check_3pid_allowed(self.hs, "msisdn", msisdn):
+            raise SynapseError(403, "3PID denied", Codes.THREEPID_DENIED)
+
         existingUid = yield self.datastore.get_user_id_by_threepid(
             'msisdn', msisdn
         )