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adr: Document OIDC client parameter discovery#2253

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rhafer merged 3 commits intoopencloud-eu:mainfrom
rhafer:adr-webfinger
Feb 16, 2026
Merged

adr: Document OIDC client parameter discovery#2253
rhafer merged 3 commits intoopencloud-eu:mainfrom
rhafer:adr-webfinger

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@rhafer
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@rhafer rhafer commented Feb 2, 2026

This basically documents what as discussed in #2072 and https://github.com/opencloud-eu/internal/issues/172

I am mainly adding to this to keep a record of why we're doing it and how.

@kulmann To make all clients use the same mechanism for discovering the oidc parameter it would IMO be good if web could switch to as well. However, looking at the other OIDC related parameters that can be configured in web. I have some questions.

  • WEB_OIDC_METADATA_URL: This allows to set the URL for the .well-known/openid-configuration endpoint. Do we really need that? This should always be the issuer-url as returned in the http://openid.net/specs/connect/1.0/issuer relation + .well-known/openid-configuration. The OIDC spec even define is as a MUST (https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderConfig).
  • ResponseType: We default to code here, have we ever encountered the need to set something else? To we need to have this configurable?
  • PostLogoutRedirectURI: I guess this is really specifc to web? So we should probably keep it in the config.json

@rhafer rhafer self-assigned this Feb 2, 2026
@TheOneRing
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lgtm

can only work with a single issuer URL, all OpenCloud clients need to use the
same client id to work with Authetnik.
- Some IDPs (kanidm) are not able to work with user-supplied client ids. They generate
client ids automatically and do not allow to specify them manually.
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So how does OpenCloud get the information which client id to propagate to e.g. the Android app then?

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This will be a Server configuration variable

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I've added the new config settings here. Will also adapt the implementation to allow the fallbacks.

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Ah, so they're generated but then fixed. Ok :-)

@sonarqubecloud
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@rhafer rhafer merged commit a1b6f53 into opencloud-eu:main Feb 16, 2026
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4 participants