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-rw-r--r--synapse/config/registration.py27
-rw-r--r--synapse/handlers/profile.py16
-rw-r--r--synapse/rest/client/v2_alpha/account.py16
3 files changed, 59 insertions, 0 deletions
diff --git a/synapse/config/registration.py b/synapse/config/registration.py
index 9bb3beedbc..e7ea3a01cb 100644
--- a/synapse/config/registration.py
+++ b/synapse/config/registration.py
@@ -129,6 +129,10 @@ class RegistrationConfig(Config):
                 raise ConfigError("Invalid auto_join_rooms entry %s" % (room_alias,))
         self.autocreate_auto_join_rooms = config.get("autocreate_auto_join_rooms", True)
 
+        self.enable_set_displayname = config.get("enable_set_displayname", True)
+        self.enable_set_avatar_url = config.get("enable_set_avatar_url", True)
+        self.enable_3pid_changes = config.get("enable_3pid_changes", True)
+
         self.disable_msisdn_registration = config.get(
             "disable_msisdn_registration", False
         )
@@ -330,6 +334,29 @@ class RegistrationConfig(Config):
             #email: https://example.com     # Delegate email sending to example.com
             #msisdn: http://localhost:8090  # Delegate SMS sending to this local process
 
+        # Whether users are allowed to change their displayname after it has
+        # been initially set. Useful when provisioning users based on the
+        # contents of a third-party directory.
+        #
+        # Does not apply to server administrators. Defaults to 'true'
+        #
+        #enable_set_displayname: false
+
+        # Whether users are allowed to change their avatar after it has been
+        # initially set. Useful when provisioning users based on the contents
+        # of a third-party directory.
+        #
+        # Does not apply to server administrators. Defaults to 'true'
+        #
+        #enable_set_avatar_url: false
+
+        # Whether users can change the 3PIDs associated with their accounts
+        # (email address and msisdn).
+        #
+        # Defaults to 'true'
+        #
+        #enable_3pid_changes: false
+
         # Users who register on this homeserver will automatically be joined
         # to these rooms
         #
diff --git a/synapse/handlers/profile.py b/synapse/handlers/profile.py
index 50ce0c585b..6aa1c0f5e0 100644
--- a/synapse/handlers/profile.py
+++ b/synapse/handlers/profile.py
@@ -157,6 +157,15 @@ class BaseProfileHandler(BaseHandler):
         if not by_admin and target_user != requester.user:
             raise AuthError(400, "Cannot set another user's displayname")
 
+        if not by_admin and not self.hs.config.enable_set_displayname:
+            profile = yield self.store.get_profileinfo(target_user.localpart)
+            if profile.display_name:
+                raise SynapseError(
+                    400,
+                    "Changing display name is disabled on this server",
+                    Codes.FORBIDDEN,
+                )
+
         if len(new_displayname) > MAX_DISPLAYNAME_LEN:
             raise SynapseError(
                 400, "Displayname is too long (max %i)" % (MAX_DISPLAYNAME_LEN,)
@@ -218,6 +227,13 @@ class BaseProfileHandler(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 not self.hs.config.enable_set_avatar_url:
+            profile = yield self.store.get_profileinfo(target_user.localpart)
+            if profile.avatar_url:
+                raise SynapseError(
+                    400, "Changing avatar is disabled on this server", Codes.FORBIDDEN
+                )
+
         if len(new_avatar_url) > MAX_AVATAR_URL_LEN:
             raise SynapseError(
                 400, "Avatar URL is too long (max %i)" % (MAX_AVATAR_URL_LEN,)
diff --git a/synapse/rest/client/v2_alpha/account.py b/synapse/rest/client/v2_alpha/account.py
index b1249b664c..f80b5e40ea 100644
--- a/synapse/rest/client/v2_alpha/account.py
+++ b/synapse/rest/client/v2_alpha/account.py
@@ -605,6 +605,11 @@ class ThreepidRestServlet(RestServlet):
         return 200, {"threepids": threepids}
 
     async def on_POST(self, request):
+        if not self.hs.config.enable_3pid_changes:
+            raise SynapseError(
+                400, "3PID changes are disabled on this server", Codes.FORBIDDEN
+            )
+
         requester = await self.auth.get_user_by_req(request)
         user_id = requester.user.to_string()
         body = parse_json_object_from_request(request)
@@ -649,6 +654,11 @@ class ThreepidAddRestServlet(RestServlet):
 
     @interactive_auth_handler
     async def on_POST(self, request):
+        if not self.hs.config.enable_3pid_changes:
+            raise SynapseError(
+                400, "3PID changes are disabled on this server", Codes.FORBIDDEN
+            )
+
         requester = await self.auth.get_user_by_req(request)
         user_id = requester.user.to_string()
         body = parse_json_object_from_request(request)
@@ -744,10 +754,16 @@ class ThreepidDeleteRestServlet(RestServlet):
 
     def __init__(self, hs):
         super(ThreepidDeleteRestServlet, self).__init__()
+        self.hs = hs
         self.auth = hs.get_auth()
         self.auth_handler = hs.get_auth_handler()
 
     async def on_POST(self, request):
+        if not self.hs.config.enable_3pid_changes:
+            raise SynapseError(
+                400, "3PID changes are disabled on this server", Codes.FORBIDDEN
+            )
+
         body = parse_json_object_from_request(request)
         assert_params_in_dict(body, ["medium", "address"])