How to Edit the Fusionauth application using API?



  • Hello,

    I am currently trying to modify the "Authorized Redirect Urls" of the FusionAuth application so that another application's post_logout_redirect_uri works as intended. Modifying the default FusionAuth application does not seem possible from the UI but it does seem possible by using the API and a PATCH command, according to documentation and this github issue: https://github.com/FusionAuth/fusionauth-issues/issues/1110.

    I tried using the api call documented here: https://fusionauth.io/docs/v1/tech/apis/applications/#update-an-application, and while the response returned a 200 OK, the FusionAuth application wasn't actually updated. I then tried using the same endpoint but specified a different application, and that was updated correctly.

    Does anyone know if there's any special variable I have to set inorder to enable modifications of the default FusionAuth application? I believe I am using the API correctly, since I am able to update my other Oauth 2.0 applications using PATCH, just not FusionAuth. I am also on version 1.28.1 right now. Thanks!



  • @yb98,

    Thanks for the question.

    The FusionAuth Application is a special application with several inaccessible attributes and fields (removed or grayed out in the Admin UI).

    I don't believe you are able to modify the redirect URI via API or Admin UI.

    I am currently trying to modify the "Authorized Redirect Urls" of the FusionAuth application so that another application's post_logout_redirect_uri works as intended.

    Can you expand on your use case? There may be another solution to your problem that we could explore.

    Thanks,
    Josh
    FusionAuth



  • Hi Josh,

    Thanks for the reply.

    Our current use case is as follows:

    1. User signs into an application (Grafana) via Oauth, this application is registered within FusionAuth
    2. The user then logs out of Grafana, this should terminate their SSO session and sign them out of all applications, but it doesn't somehow. I have tried setting the logout behaviour to "All applications" but this doesn't make a difference.

    To address that second point, I modified Grafana to redirect to FusionAuth's logout url (/admin/logout) which results in a global logout. This is how a global logout is achieved in Grafana it seems (https://github.com/grafana/grafana/pull/12077).

    However, when the user does logout of Grafana, because they are redirected to Fusionauth's logout endpoint, if they attempt to login again (without changing tabs), they will be signed into FusionAuth. Therefore, I was thinking the post_logout_redirect_uri could be used, while it does attempt to redirect the user back to Grafana after logging out from FusionAuth, it ultimately fails as the origin of the request is not listed as one of the "Authorized redirect urls" inside of the FusionAuth application, this is why I was hoping we could modify the "Authorized redirect urls" using the API.



  • @yb98

    I think what you are looking for is OAuth's back-channel logout. This is under consideration under ticket 465.

    https://github.com/FusionAuth/fusionauth-issues/issues/465

    As a workaround, you would have to use a backend (or another environment that can appropriately hide credentials) and make a call to revoke the refresh token on a user.

    I may be misunderstanding your workflow, but I believe the above should point at a possible solution.

    Thanks,
    Josh


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