From 42a8e81370855a2c612f2acfd1c0648329a12aff Mon Sep 17 00:00:00 2001 From: Richard van der Hoff <1389908+richvdh@users.noreply.github.com> Date: Thu, 21 Jan 2021 13:20:58 +0000 Subject: [PATCH] Add a check for duplicate IdP ids (#9184) --- changelog.d/9184.misc | 1 + synapse/config/oidc_config.py | 11 +++++++++++ 2 files changed, 12 insertions(+) create mode 100644 changelog.d/9184.misc diff --git a/changelog.d/9184.misc b/changelog.d/9184.misc new file mode 100644 index 0000000000..70da3d6cf5 --- /dev/null +++ b/changelog.d/9184.misc @@ -0,0 +1 @@ +Emit an error at startup if different Identity Providers are configured with the same `idp_id`. diff --git a/synapse/config/oidc_config.py b/synapse/config/oidc_config.py index d58a83be7f..bfeceeed18 100644 --- a/synapse/config/oidc_config.py +++ b/synapse/config/oidc_config.py @@ -15,6 +15,7 @@ # limitations under the License. import string +from collections import Counter from typing import Iterable, Optional, Tuple, Type import attr @@ -43,6 +44,16 @@ class OIDCConfig(Config): except DependencyException as e: raise ConfigError(e.message) from e + # check we don't have any duplicate idp_ids now. (The SSO handler will also + # check for duplicates when the REST listeners get registered, but that happens + # after synapse has forked so doesn't give nice errors.) + c = Counter([i.idp_id for i in self.oidc_providers]) + for idp_id, count in c.items(): + if count > 1: + raise ConfigError( + "Multiple OIDC providers have the idp_id %r." % idp_id + ) + public_baseurl = self.public_baseurl self.oidc_callback_url = public_baseurl + "_synapse/oidc/callback"