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-rw-r--r--synapse/config/server.py13
-rw-r--r--synapse/handlers/profile.py6
2 files changed, 18 insertions, 1 deletions
diff --git a/synapse/config/server.py b/synapse/config/server.py
index 50af858c76..38f6ff9edc 100644
--- a/synapse/config/server.py
+++ b/synapse/config/server.py
@@ -102,6 +102,12 @@ class ServerConfig(Config):
             "require_auth_for_profile_requests", False
         )
 
+        # Whether to require sharing a room with a user to retrieve their
+        # profile data
+        self.limit_profile_requests_to_users_who_share_rooms = config.get(
+            "limit_profile_requests_to_users_who_share_rooms", False,
+        )
+
         if "restrict_public_rooms_to_local_users" in config and (
             "allow_public_rooms_without_auth" in config
             or "allow_public_rooms_over_federation" in config
@@ -621,6 +627,13 @@ class ServerConfig(Config):
         #
         #require_auth_for_profile_requests: true
 
+        # Uncomment to require a user to share a room with another user in order
+        # to retrieve their profile information. Only checked on Client-Server
+        # requests. Profile requests from other servers should be checked by the
+        # requesting server. Defaults to 'false'.
+        #
+        #limit_profile_requests_to_users_who_share_rooms: true
+
         # If set to 'true', removes the need for authentication to access the server's
         # public rooms directory through the client API, meaning that anyone can
         # query the room directory. Defaults to 'false'.
diff --git a/synapse/handlers/profile.py b/synapse/handlers/profile.py
index 1e5a4613c9..f9579d69ee 100644
--- a/synapse/handlers/profile.py
+++ b/synapse/handlers/profile.py
@@ -295,12 +295,16 @@ class BaseProfileHandler(BaseHandler):
                 be found to be in any room the server is in, and therefore the query
                 is denied.
         """
+
         # Implementation of MSC1301: don't allow looking up profiles if the
         # requester isn't in the same room as the target. We expect requester to
         # be None when this function is called outside of a profile query, e.g.
         # when building a membership event. In this case, we must allow the
         # lookup.
-        if not self.hs.config.require_auth_for_profile_requests or not requester:
+        if (
+            not self.hs.config.limit_profile_requests_to_users_who_share_rooms
+            or not requester
+        ):
             return
 
         # Always allow the user to query their own profile.