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package com.sun.jersey.oauth.client;

import com.sun.jersey.oauth.signature.OAuthParameters;
import java.net.URI;

/** Thrown from a client request by the {@link OAuthClientFilter} if
 * the request is not properly authorized. I.e. either when the user authorization
 * of a request token is required and has not been provided by the {@link OAuthClientFilter.AuthHandler}
 * or if the request token got revoked by the user - i.e. the verifier provided by the
 * {@link OAuthClientFilter.AuthHandler} was either null or invalid.
 * In the first case, client may redirect user to the URI returned
 * from {@link #getAuthorizationUri()}.
 * Once authorization is obtained, client should add verifier code returned
 * by the server into OAuth parameters object returned from
 * {@link UnauthorizedRequestException#getOAuthParameters()}.
 * In the second case {@link #getAuthorizationUri()} returns null.
 *
 * @author Martin Matula 
 */
public class UnauthorizedRequestException extends RuntimeException {
    private final OAuthParameters params;
    private final URI authUri;

    public UnauthorizedRequestException(OAuthParameters parameters, URI authorizationUri) {
        params = parameters;
        authUri = authorizationUri;
    }

    /** Returns OAuthParameters structure used by the {@link OAuthClientFilter}.
     * Can be used to update parameters to make the next request not fail (i.e. set a new
     * verification code).
     *
     * @return OAuth request parameters
     */
    public OAuthParameters getOAuthParameters() {
        return params;
    }

    /** Returns authorization URI the user can be redirected to to provide authorization,
     * or null if there is no request token to be authorized (i.e. user revoked access
     * to the request token obtained by the client).
     *
     * @return authorization URI or null
     */
    public URI getAuthorizationUri() {
        return authUri;
    }
}