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 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
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 * file and include the License file at packager/legal/LICENSE.txt.
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package com.sun.jersey.oauth.server.api.resources;

import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.api.representation.Form;
import com.sun.jersey.core.util.MultivaluedMapImpl;
import com.sun.jersey.oauth.signature.OAuthParameters;
import com.sun.jersey.oauth.signature.OAuthSecrets;
import com.sun.jersey.oauth.signature.OAuthSignature;
import com.sun.jersey.oauth.signature.OAuthSignatureException;
import com.sun.jersey.oauth.server.OAuthException;
import com.sun.jersey.oauth.server.OAuthServerRequest;
import com.sun.jersey.oauth.server.spi.OAuthConsumer;
import com.sun.jersey.oauth.server.spi.OAuthProvider;
import com.sun.jersey.oauth.server.spi.OAuthToken;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.core.Context;
import javax.ws.rs.Path;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;

/**
 * Resource handling request token requests.
 *
 * @author Hubert A. Le Van Gong 
 * @author Martin Matula
 */

@Path("/requestToken")
public class RequestTokenRequest {
    private @Context OAuthProvider provider;
    private @Context HttpContext hc;
    /**
     * POST method for creating a request for a Request Token
     * @param content representation for the resource
     * @return an HTTP response with content of the updated or created resource.
     */
    @POST
    @Consumes("application/x-www-form-urlencoded")
    @Produces("application/x-www-form-urlencoded")
    public Response postReqTokenRequest() {
        try {
            OAuthServerRequest request = new OAuthServerRequest(hc.getRequest());
            OAuthParameters params = new OAuthParameters();
            params.readRequest(request);

            String tok = params.getToken();
            if ((tok != null) && (!tok.contentEquals(""))) {
                throw new OAuthException(Response.Status.BAD_REQUEST, null);
            }

            String consKey = params.getConsumerKey();
            if (consKey == null) {
                throw new OAuthException(Response.Status.BAD_REQUEST, null);
            }

            OAuthConsumer consumer = provider.getConsumer(consKey);
            if (consumer == null) {
                throw new OAuthException(Response.Status.BAD_REQUEST, null);
            }
            OAuthSecrets secrets = new OAuthSecrets().consumerSecret(consumer.getSecret()).tokenSecret("");

            boolean sigIsOk = false;
            try {
                sigIsOk = OAuthSignature.verify(request, params, secrets);
            } catch (OAuthSignatureException ex) {
                Logger.getLogger(RequestTokenRequest.class.getName()).log(Level.SEVERE, null, ex);
            }

            if (!sigIsOk) {
                throw new OAuthException(Response.Status.BAD_REQUEST, null);
            }

            MultivaluedMap parameters = new MultivaluedMapImpl();
            for (String n : request.getParameterNames()) {
                parameters.put(n, request.getParameterValues(n));
            }

            OAuthToken rt = provider.newRequestToken(consKey, params.getCallback(), parameters);

            Form resp = new Form();
            resp.putSingle(OAuthParameters.TOKEN, rt.getToken());
            resp.putSingle(OAuthParameters.TOKEN_SECRET, rt.getSecret());
            resp.putSingle(OAuthParameters.CALLBACK_CONFIRMED, "true");
            return Response.ok(resp).build();
        } catch (OAuthException e) {
            return e.toResponse();
        }
    }
}