diff --git a/synapse/config/registration.py b/synapse/config/registration.py
index 34326718ad..cbc1d3d00e 100644
--- a/synapse/config/registration.py
+++ b/synapse/config/registration.py
@@ -49,6 +49,9 @@ class RegistrationConfig(Config):
self.auto_join_rooms = config.get("auto_join_rooms", [])
+ self.disable_set_displayname = config.get("disable_set_displayname", False)
+ self.disable_set_avatar_url = config.get("disable_set_avatar_url", False)
+
self.replicate_user_profiles_to = config.get("replicate_user_profiles_to", [])
if not isinstance(self.replicate_user_profiles_to, list):
self.replicate_user_profiles_to = [self.replicate_user_profiles_to, ]
@@ -118,10 +121,19 @@ class RegistrationConfig(Config):
# cross-homeserver user directories.
# replicate_user_profiles_to: example.com
+ # If enabled, don't let users set their own display names/avatars
+ # other than for the very first time (unless they are a server admin).
+ # Useful when provisioning users based on the contents of a 3rd party
+ # directory and to avoid ambiguities.
+ #
+ # disable_set_displayname: True
+ # disable_set_avatar_url: True
+
# Users who register on this homeserver will automatically be joined
# to these rooms
#auto_join_rooms:
# - "#example:example.com"
+
""" % locals()
def add_arguments(self, parser):
diff --git a/synapse/handlers/profile.py b/synapse/handlers/profile.py
index 7c5591056d..1a79004d57 100644
--- a/synapse/handlers/profile.py
+++ b/synapse/handlers/profile.py
@@ -215,6 +215,11 @@ class ProfileHandler(BaseHandler):
if not by_admin and target_user != requester.user:
raise AuthError(400, "Cannot set another user's displayname")
+ if not by_admin and self.hs.config.disable_set_displayname:
+ profile = yield self.store.get_profileinfo(target_user.localpart)
+ if profile.display_name:
+ raise SynapseError(400, "Changing displayname is disabled on this server")
+
if new_displayname == '':
new_displayname = None
@@ -277,6 +282,11 @@ class ProfileHandler(BaseHandler):
if not by_admin and target_user != requester.user:
raise AuthError(400, "Cannot set another user's avatar_url")
+ if not by_admin and self.hs.config.disable_set_avatar_url:
+ profile = yield self.store.get_profileinfo(target_user.localpart)
+ if profile.avatar_url:
+ raise SynapseError(400, "Changing avatar url is disabled on this server")
+
if len(self.hs.config.replicate_user_profiles_to) > 0:
cur_batchnum = yield self.store.get_latest_profile_replication_batch_number()
new_batchnum = 0 if cur_batchnum is None else cur_batchnum + 1
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