1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.proxy;
21
22 import org.apache.mina.core.service.IoHandler;
23 import org.apache.mina.core.service.IoHandlerAdapter;
24 import org.apache.mina.core.session.IoSession;
25 import org.apache.mina.proxy.handlers.socks.SocksProxyRequest;
26 import org.apache.mina.proxy.session.ProxyIoSession;
27 import org.slf4j.Logger;
28 import org.slf4j.LoggerFactory;
29
30 /**
31 * AbstractProxyIoHandler.java - {@link IoHandler} that intercepts events until handshake is complete.
32 *
33 * @author The Apache MINA Project (dev@mina.apache.org)
34 * @since MINA 2.0.0-M3
35 */
36 public abstract class AbstractProxyIoHandler extends IoHandlerAdapter {
37 private final static Logger logger = LoggerFactory
38 .getLogger(AbstractProxyIoHandler.class);
39
40 /**
41 * Method called only when handshake has completed.
42 *
43 * @param session the io session
44 */
45 public abstract void proxySessionOpened(IoSession session) throws Exception;
46
47 /**
48 * Hooked session opened event.
49 *
50 * @param session the io session
51 */
52 @Override
53 public final void sessionOpened(IoSession session) throws Exception {
54 ProxyIoSession proxyIoSession = (ProxyIoSession) session
55 .getAttribute(ProxyIoSession.PROXY_SESSION);
56
57 if (proxyIoSession.getRequest() instanceof SocksProxyRequest
58 || proxyIoSession.isAuthenticationFailed()
59 || proxyIoSession.getHandler().isHandshakeComplete()) {
60 proxySessionOpened(session);
61 } else {
62 logger.debug("Filtered session opened event !");
63 }
64 }
65 }