[jira] [Created] (OLTU-194) Parameter OAUTH_REDIRECT_URI is considered REQUIRED even when it shouldn't

["Michael Javault (JIRA)" <ji...@apache.org>]

Michael Javault created OLTU-194:
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             Summary: Parameter OAUTH_REDIRECT_URI is considered REQUIRED even when it shouldn't
                 Key: OLTU-194
                 URL: https://issues.apache.org/jira/browse/OLTU-194
             Project: Apache Oltu
          Issue Type: Bug
            Reporter: Michael Javault
            Priority: Minor


The current implementation of the {{OAuthTokenRequest}} forces all authorization code requests to provide a redirect URI, or fails, but using {{AuthorizationCodeValidator}}:
{{AuthorizationCodeValidator.java:38}}
{code}
        requiredParams.add(OAuth.OAUTH_REDIRECT_URI);
{code}

But per the [RFC 6749|http://tools.ietf.org/html/rfc6749#section-4.1.3], the redirect URI field is not always required:
{noformat}
   redirect_uri
         REQUIRED, if the "redirect_uri" parameter was included in the
         authorization request as described in Section 4.1.1, and their
         values MUST be identical.
 {noformat}

I am working with clients that force registration per [section 3.1.2.2|http://tools.ietf.org/html/rfc6749#section-3.1.2.2], and do not provide a redirect URI.
As a work around, I am using the {{OAuthUnauthenticatedTokenRequest}} class instead of the {{OAuthTokenRequest}} but I have to re-implement the {{validateClientAuthenticationCredentials()}} function.



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