FWIW, as best I can remember the change in question came as I result of directorate/IESG review rather than a WG decision/discussion. Which is likely why you can't find the "why" anywhere in the mailing list archive.
On Wed, Aug 28, 2019 at 3:23 PM Filip Skokan <panva...@gmail.com> wrote: > Well it kind of blows, doesn't it? I wasn't able to find the "why" > anywhere in the mailing list archive around the time this was changed. > > My take on satisfying both worlds looks like this > > - allow just JAR - no other params when possible. > (which btw isn't possible to do with request_uri when enforcing client > based uri whitelist and the jwsreq 5.2.2 shows as much) > - enforce the "dupe behaviours" defined in OIDC (if response_type or > client_id is in request object it must either be missing or the same in > regular request). > - allows merging request object and regular parameters with request object > taking precedence since it is a very useful feature when having pre-signed > request object that's not one time use and clients using it wish to vary > state/nonce per-request. > > I wish the group reconsidered making this breaking change from OIDC's take > on request objects - allow combination of parameters from the request > object with ones from regular parameters (if not present in request object). > > S pozdravem, > *Filip Skokan* > > > On Wed, 28 Aug 2019 at 23:02, Brian Campbell <bcampb...@pingidentity.com> > wrote: > >> Filip, for better or worse, I believe your assessment of the situation is >> correct. I know of one AS that didn't choose which of the two to follow but >> rather implemented a bit of a hybrid where it basically ignores everything >> outside of the request object per JAR but also checks for and enforces the >> presence and value of the few regular parameters (client_id, response_type) >> that OIDC mandates. >> >> On Tue, Aug 27, 2019 at 5:47 AM Filip Skokan <panva...@gmail.com> wrote: >> >>> Hello everyone, >>> >>> in an earlier thread I've posed the following question that might have >>> gotten missed, this might have consequences for the existing >>> implementations of Request Objects in OIDC implementations - its making >>> pure JAR requests incompatible with OIDC Core implementations. >>> >>> draft 14 of jwsreq (JAR) introduced this language >>> >>> The client MAY send the parameters included in the request object >>>> duplicated in the query parameters as well for the backward >>>> compatibility etc. >>>> >>>> *However, the authorization server supporting thisspecification MUST >>>> only use the parameters included in the requestobject. * >>> >>> >>> Server MUST only use the parameters in the Request Object even if the >>>> same parameter is provided in the query parameter. The Authorization >>> >>> >>> The client MAY send the parameters included in the request object >>>> duplicated in the query parameters as well for the backward >>>> compatibility etc. >>>> >>>> *However, the authorization server supporting thisspecification MUST >>>> only use the parameters included in the requestobject. * >>> >>> >>> Nat, John, everyone - *does this mean a JAR compliant AS ignores >>> everything outside of the request object while OIDC Request Object one >>> merges the two with the ones in the request object being used over ones >>> that are sent in clear?* The OIDC language also includes sections which >>> make sure that some required arguments are still passed outside of the >>> request object with the same value to make sure the request is "valid" >>> OAuth 2.0 request (client_id, response_type), something which an example in >>> the JAR spec does not do. Not having this language means that existing >>> authorization request pipelines can't simply be extended with e.g. a >>> middleware, they need to branch their codepaths. >>> >>> Is an AS required to choose which of the two it follows? >>> >>> Thank you for clarifying this in advance. I think if either the >>> behaviour is the same as in OIDC or different this should be called out in >>> the language to avoid confusion, especially since this already exists in >>> OIDC and likely isn't going to be read in isolation, especially because the >>> Request Object is even called out to be already in place in OIDC in the JAR >>> draft. >>> >>> Best, >>> *Filip* >>> _______________________________________________ >>> OAuth mailing list >>> OAuth@ietf.org >>> https://www.ietf.org/mailman/listinfo/oauth >>> >> >> *CONFIDENTIALITY NOTICE: This email may contain confidential and >> privileged material for the sole use of the intended recipient(s). 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