Java tutorial
package org.sana.android.net.ssl; /* * $HeadURL$ * $Revision$ * $Date$ * * ==================================================================== * * 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 java.security.KeyManagementException; import java.security.KeyStore; import java.security.KeyStoreException; import java.security.NoSuchAlgorithmException; import java.security.UnrecoverableKeyException; import javax.net.SocketFactory; import javax.net.ssl.HostnameVerifier; import javax.net.ssl.SSLContext; import javax.net.ssl.SSLSession; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; import org.apache.http.conn.ConnectTimeoutException; import org.apache.http.conn.ssl.SSLSocketFactory; import org.apache.http.client.ClientProtocolException; import org.apache.http.params.HttpConnectionParams; import org.apache.http.params.HttpParams; /** * <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 SimpleSSLProtocolSocketFactory extends SSLSocketFactory { // always verify the host - dont check for certificate final static HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() { public boolean verify(String hostname, SSLSession session) { return true; } }; public SimpleSSLProtocolSocketFactory(KeyStore truststore) throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException, UnrecoverableKeyException { super(truststore); // TODO Auto-generated constructor stub } /** Log object for this class. */ //private static final Log LOG = LogFactory.getLog(EasySSLProtocolSocketFactory.class); private SSLContext sslcontext = null; private static SSLContext createEasySSLContext() throws ClientProtocolException { try { SSLContext context = SSLContext.getInstance("TLS"); context.init(null, new TrustManager[] { new X509TrustManager() { public java.security.cert.X509Certificate[] getAcceptedIssuers() { return null; } public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) { } public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) { } } }, null); return context; } catch (Exception e) { //LOG.error(e.getMessage(), e); throw new ClientProtocolException(e.toString()); } } private SSLContext getSSLContext() throws ClientProtocolException { if (this.sslcontext == null) { this.sslcontext = createEasySSLContext(); } return this.sslcontext; } /** * @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 clientHost the local host name/IP to bind the socket to * @param clientPort the port on the local machine * @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 */ public Socket createSocket(final String host, final int port, final InetAddress localAddress, final int localPort, final HttpParams params) throws IOException, UnknownHostException, ConnectTimeoutException { if (params == null) { throw new IllegalArgumentException("Parameters may not be null"); } int timeout = HttpConnectionParams.getConnectionTimeout(params); 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; } } /** * @see SecureProtocolSocketFactory#createSocket(java.lang.String,int) */ public Socket createSocket(String host, int port) throws IOException, UnknownHostException { return getSSLContext().getSocketFactory().createSocket(host, port); } /** * @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); } public boolean equals(Object obj) { return ((obj != null) && obj.getClass().equals(SimpleSSLProtocolSocketFactory.class)); } public int hashCode() { return SimpleSSLProtocolSocketFactory.class.hashCode(); } }