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From "Sergey Beryozkin (JIRA)" <>
Subject [jira] [Commented] (CXF-5226) OAuth public clients don't appear to work in RedirectionGrantServices
Date Mon, 26 Aug 2013 12:11:51 GMT


Sergey Beryozkin commented on CXF-5226:

The temp workaround is to override this method and negate the super response, just to play
along with the buggy RedirectionBasedGrantService code :-)
> OAuth public clients don't appear to work in RedirectionGrantServices
> ---------------------------------------------------------------------
>                 Key: CXF-5226
>                 URL:
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS Security
>    Affects Versions: 2.7.6
>            Reporter: Diarmuid Power
>            Assignee: Sergey Beryozkin
>             Fix For: 3.0.0, 2.6.10, 2.7.7
> I believe there is an issue when using a redirect grant service using a public client.
> My concern is the negation in front of the _canSupportPublicClient_ which passes this
value to the _OAuthUtils.isGrantSupportedForClient_ as if it had not been negated.
> {code}
> if (!OAuthUtils.isGrantSupportedForClient(client, !canSupportPublicClient(client), supportedGrantType))
>     return createErrorResponse(params, redirectUri, OAuthConstants.UNAUTHORIZED_CLIENT);
> {code}
> This method then checks for a logical condition like, is public client and provider cannot
support public clients. Instead, the logic of the condition reads, if public client and provider
can support public client, then throw exception.
> {code}
> public static boolean isGrantSupportedForClient(Client client, boolean canSupportPublicClients,
String grantType) {
> 	if (!client.isConfidential() && !canSupportPublicClients) {
>             return false;
> {code}
> So believe this to be a bug and I wanted to submit this for your consideration.
> Another note is that AccessTokenService approaches this differently and doesn't seem
to start with a negation:
> {code}
>  if (!OAuthUtils.isGrantSupportedForClient(client, isCanSupportPublicClients(), params.getFirst(OAuthConstants.GRANT_TYPE)))
>     return createErrorResponse(params, OAuthConstants.UNAUTHORIZED_CLIENT);
> {code}
> P.S. First time logging an issue so apologies if I filled out any fields incorrectly.

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