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From "Diarmuid Power (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CXF-5226) OAuth public clients don't appear to work in RedirectionGrantServices
Date Thu, 22 Aug 2013 14:39:51 GMT
Diarmuid Power created CXF-5226:
-----------------------------------

             Summary: OAuth public clients don't appear to work in RedirectionGrantServices
                 Key: CXF-5226
                 URL: https://issues.apache.org/jira/browse/CXF-5226
             Project: CXF
          Issue Type: Bug
          Components: JAX-RS Security
    Affects Versions: 2.7.6
            Reporter: Diarmuid Power


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}
org.apache.cxf.rs.security.oauth2.services.startAuthorization()

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}
org.apache.cxf.rs.security.oauth2.utils.OAuthUtils.isGrantSupportedForClient()

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}
org.apache.cxf.rs.security.oauth2.services.AccessTokenService.handleTokenRequest()

P.S. First time logging an issue so apologies if I filled out any fields incorrectly.

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