Java tutorial
package com.owera.xaps.web.app.page.monitor; /* * $HeadURL$ * $Revision$ * $Date$ * * ==================================================================== * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ import java.io.IOException; import java.net.InetAddress; import java.net.InetSocketAddress; import java.net.Socket; import java.net.SocketAddress; import java.net.UnknownHostException; import javax.net.SocketFactory; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import org.apache.commons.httpclient.ConnectTimeoutException; import org.apache.commons.httpclient.HttpClientError; import org.apache.commons.httpclient.params.HttpConnectionParams; import org.apache.commons.httpclient.protocol.SecureProtocolSocketFactory; /** * <p> * EasySSLProtocolSocketFactory can be used to creats SSL {@link Socket}s that * accept self-signed certificates. * </p> * <p> * This socket factory SHOULD NOT be used for productive systems due to security * reasons, unless it is a concious decision and you are perfectly aware of * security implications of accepting self-signed certificates * </p> * * <p> * Example of using custom protocol socket factory for a specific host: * * <pre> * Protocol easyhttps = new Protocol("https", new EasySSLProtocolSocketFactory(), 443); * * URI uri = new URI("https://localhost/", true); * // use relative url only * GetMethod httpget = new GetMethod(uri.getPathQuery()); * HostConfiguration hc = new HostConfiguration(); * hc.setHost(uri.getHost(), uri.getPort(), easyhttps); * HttpClient client = new HttpClient(); * client.executeMethod(hc, httpget); * </pre> * * </p> * <p> * Example of using custom protocol socket factory per default instead of the * standard one: * * <pre> * Protocol easyhttps = new Protocol("https", new EasySSLProtocolSocketFactory(), 443); * Protocol.registerProtocol("https", easyhttps); * * HttpClient client = new HttpClient(); * GetMethod httpget = new GetMethod("https://localhost/"); * client.executeMethod(httpget); * </pre> * * </p> * * @author <a href="mailto:oleg -at- ural.ru">Oleg Kalnichevski</a> * * <p> * DISCLAIMER: HttpClient developers DO NOT actively support this * component. The component is provided as a reference material, which * may be inappropriate for use without additional customization. * </p> */ public class EasySSLProtocolSocketFactory implements SecureProtocolSocketFactory { /** The sslcontext. */ private SSLContext sslcontext = null; /** * Constructor for EasySSLProtocolSocketFactory. */ public EasySSLProtocolSocketFactory() { super(); } /** * Creates a new EasySSLProtocolSocket object. * * @return the SSL context */ private static SSLContext createEasySSLContext() { try { SSLContext context = SSLContext.getInstance("SSL"); context.init(null, new TrustManager[] { new EasyX509TrustManager(null) }, null); return context; } catch (Exception e) { throw new HttpClientError(e.toString()); } } /** * Gets the sSL context. * * @return the sSL context */ private SSLContext getSSLContext() { if (this.sslcontext == null) { this.sslcontext = createEasySSLContext(); } return this.sslcontext; } /** * Creates a new EasySSLProtocolSocket object. * * @param host the host * @param port the port * @param clientHost the client host * @param clientPort the client port * @return the socket * @throws IOException Signals that an I/O exception has occurred. * @throws UnknownHostException the unknown host exception * @see SecureProtocolSocketFactory#createSocket(java.lang.String,int,java.net.InetAddress,int) */ public Socket createSocket(String host, int port, InetAddress clientHost, int clientPort) throws IOException, UnknownHostException { return getSSLContext().getSocketFactory().createSocket(host, port, clientHost, clientPort); } /** * Attempts to get a new socket connection to the given host within the * given time limit. * <p> * To circumvent the limitations of older JREs that do not support connect * timeout a controller thread is executed. The controller thread attempts * to create a new socket within the given limit of time. If socket * constructor does not return until the timeout expires, the controller * terminates and throws an {@link ConnectTimeoutException} * </p> * * @param host the host name/IP * @param port the port on the host * @param localAddress the local address * @param localPort the local port * @param params {@link HttpConnectionParams Http connection parameters} * @return Socket a new socket * @throws IOException if an I/O error occurs while creating the socket * @throws UnknownHostException if the IP address of the host cannot be determined * @throws ConnectTimeoutException the connect timeout exception */ public Socket createSocket(final String host, final int port, final InetAddress localAddress, final int localPort, final HttpConnectionParams params) throws IOException, UnknownHostException, ConnectTimeoutException { if (params == null) { throw new IllegalArgumentException("Parameters may not be null"); } int timeout = params.getConnectionTimeout(); SocketFactory socketfactory = getSSLContext().getSocketFactory(); if (timeout == 0) { return socketfactory.createSocket(host, port, localAddress, localPort); } else { Socket socket = socketfactory.createSocket(); SocketAddress localaddr = new InetSocketAddress(localAddress, localPort); SocketAddress remoteaddr = new InetSocketAddress(host, port); socket.bind(localaddr); socket.connect(remoteaddr, timeout); return socket; } } /** * Creates a new EasySSLProtocolSocket object. * * @param host the host * @param port the port * @return the socket * @throws IOException Signals that an I/O exception has occurred. * @throws UnknownHostException the unknown host exception * @see SecureProtocolSocketFactory#createSocket(java.lang.String,int) */ public Socket createSocket(String host, int port) throws IOException, UnknownHostException { return getSSLContext().getSocketFactory().createSocket(host, port); } /** * Creates a new EasySSLProtocolSocket object. * * @param socket the socket * @param host the host * @param port the port * @param autoClose the auto close * @return the socket * @throws IOException Signals that an I/O exception has occurred. * @throws UnknownHostException the unknown host exception * @see SecureProtocolSocketFactory#createSocket(java.net.Socket,java.lang.String,int,boolean) */ public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, UnknownHostException { return getSSLContext().getSocketFactory().createSocket(socket, host, port, autoClose); } /* (non-Javadoc) * @see java.lang.Object#equals(java.lang.Object) */ public boolean equals(Object obj) { return ((obj != null) && obj.getClass().equals(EasySSLProtocolSocketFactory.class)); } /* (non-Javadoc) * @see java.lang.Object#hashCode() */ public int hashCode() { return EasySSLProtocolSocketFactory.class.hashCode(); } }