1 files changed, 15 insertions, 1 deletions
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 08d60f0817..ab43856023 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -196,4 +196,18 @@ class RegistrationStore(SQLBaseStore):
             ['medium', 'address', 'validated_at', 'added_at'],
             'user_get_threepids'
         )
-        defer.returnValue(ret)
\ No newline at end of file
+        defer.returnValue(ret)
+
+    @defer.inlineCallbacks
+    def get_user_by_threepid(self, medium, address):
+        ret = yield self._simple_select_one(
+            "user_threepids",
+            {
+                "medium": medium,
+                "address": address
+            },
+            ['user'], True, 'get_user_by_threepid'
+        )
+        if ret:
+            defer.returnValue(ret['user'])
+        defer.returnValue(None)
\ No newline at end of file