providers/proxy: fix redirect_uris not always being set on save

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/providers/proxy/api.py

@@ -53,8 +53,10 @@ class ProxyProviderSerializer(ProviderSerializer):
         return instance
 
     def update(self, instance: ProxyProvider, validated_data):
+        instance = super().update(instance, validated_data)
         instance.set_oauth_defaults()
-        return super().update(instance, validated_data)
+        instance.save()
+        return instance
 
     class Meta:
 

authentik/providers/proxy/models.py

@@ -127,7 +127,7 @@ class ProxyProvider(OutpostModel, OAuth2Provider):
         """Ensure all OAuth2-related settings are correct"""
         self.client_type = ClientTypes.CONFIDENTIAL
         self.jwt_alg = JWTAlgorithms.RS256
-        self.rsa_key = CertificateKeyPair.objects.first()
+        self.rsa_key = CertificateKeyPair.objects.exclude(key_data__iexact="").first()
         scopes = ScopeMapping.objects.filter(
             scope_name__in=[
                 SCOPE_OPENID,