/*
 * Copyright 2004,2005 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.rampart.conversation;

import org.apache.rahas.Token;
import org.apache.ws.security.WSPasswordCallback;

import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;

import java.io.IOException;

/**
 * This is ths callback handler used to extract he secure conversation
 * session key for a given context identifier
 * @deprecated 
 */
public class ConversationCallbackHandler implements CallbackHandler {

    private ConversationConfiguration config;
    
    public ConversationCallbackHandler(ConversationConfiguration config) {
        this.config = config;
    }
    
    public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
        for (int i = 0; i < callbacks.length; i++) {

            if (callbacks[i] instanceof WSPasswordCallback) {
                WSPasswordCallback pc = (WSPasswordCallback) callbacks[i];
                String id = pc.getIdentifer();
                Token tok;
                try {
                    //Pick up the token from the token store
                    tok = this.config.getTokenStore().getToken(id);
                    //Get the secret and set it in the callback object
                    pc.setKey(tok.getSecret());
                    //Register the security context in the current configuration
                    Util.resgisterContext(id, config);
                } catch (Exception e) {
                    e.printStackTrace();
                    throw new IOException(e.getMessage());
                }

            } else {
                throw new UnsupportedCallbackException(callbacks[i],
                        "Unrecognized Callback");
            }
        }
    }

}