Allow denying or shadow banning registrations via the spam checker (#8034)

synapse/handlers/oidc_handler.py

@@ -93,6 +93,7 @@ class OidcHandler:
     """
 
     def __init__(self, hs: "HomeServer"):
+        self.hs = hs
         self._callback_url = hs.config.oidc_callback_url  # type: str
         self._scopes = hs.config.oidc_scopes  # type: List[str]
         self._client_auth = ClientAuth(
@@ -689,9 +690,17 @@ class OidcHandler:
                 self._render_error(request, "invalid_token", str(e))
                 return
 
+        # Pull out the user-agent and IP from the request.
+        user_agent = request.requestHeaders.getRawHeaders(b"User-Agent", default=[b""])[
+            0
+        ].decode("ascii", "surrogateescape")
+        ip_address = self.hs.get_ip_from_request(request)
+
         # Call the mapper to register/login the user
         try:
-            user_id = await self._map_userinfo_to_user(userinfo, token)
+            user_id = await self._map_userinfo_to_user(
+                userinfo, token, user_agent, ip_address
+            )
         except MappingException as e:
             logger.exception("Could not map user")
             self._render_error(request, "mapping_error", str(e))
@@ -828,7 +837,9 @@ class OidcHandler:
         now = self._clock.time_msec()
         return now < expiry
 
-    async def _map_userinfo_to_user(self, userinfo: UserInfo, token: Token) -> str:
+    async def _map_userinfo_to_user(
+        self, userinfo: UserInfo, token: Token, user_agent: str, ip_address: str
+    ) -> str:
         """Maps a UserInfo object to a mxid.
 
         UserInfo should have a claim that uniquely identifies users. This claim
@@ -843,6 +854,8 @@ class OidcHandler:
         Args:
             userinfo: an object representing the user
             token: a dict with the tokens obtained from the provider
+            user_agent: The user agent of the client making the request.
+            ip_address: The IP address of the client making the request.
 
         Raises:
             MappingException: if there was an error while mapping some properties
@@ -899,7 +912,9 @@ class OidcHandler:
         # It's the first time this user is logging in and the mapped mxid was
         # not taken, register the user
         registered_user_id = await self._registration_handler.register_user(
-            localpart=localpart, default_display_name=attributes["display_name"],
+            localpart=localpart,
+            default_display_name=attributes["display_name"],
+            user_agent_ips=(user_agent, ip_address),
         )
 
         await self._datastore.record_user_external_id(