microsoft.exchange.webservices.data.EwsSSLProtocolSocketFactory Maven / Gradle / Ivy

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There is a newer version: 1.1.5.2
/**************************************************************************
 * copyright file="EwsSSLProtocolSocketFactory.java" company="Microsoft"
 *     Copyright (c) Microsoft Corporation.  All rights reserved.
 * 
 * Defines the EwsSSLProtocolSocketFactory.java.
 **************************************************************************/
package microsoft.exchange.webservices.data;

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;

/**
 * 
 * EwsSSLProtocolSocketFactory can be used to creats SSL {@link Socket}s 
 * that accept self-signed certificates. 
 * 
 * 
 * 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
 * 
 *
 * 
 * Example of using custom protocol socket factory for a specific host:
 *     
 *     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);
 *     
 * 
 * 
 * Example of using custom protocol socket factory per default instead of the standard one:
 *     
 *     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);
 *     
 * 
 *  
 * 
 * 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.
 * 
 */

class EwsSSLProtocolSocketFactory implements SecureProtocolSocketFactory {

	/** The SSL Context. */
    private SSLContext sslcontext = null;
    
    /** The X509 TrustManager. */
    static TrustManager trustManager = null;

    /**
     * Constructor for EasySSLProtocolSocketFactory.
     */
    public EwsSSLProtocolSocketFactory() {
        super();
    }

    private static SSLContext createEasySSLContext() {
        try {
            SSLContext context = SSLContext.getInstance("SSL");
            context.init(
              null, 
              new TrustManager[] {new EwsX509TrustManager(null, trustManager)}, 
              null);
            return context;
        } catch (Exception e) {
            System.out.println(e.getMessage()+e);
            throw new HttpClientError(e.toString());
        }
    }

    private SSLContext getSSLContext() {
        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.
     * 
     * 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}
     * 
     *  
     * @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 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;
        }
    }

    /**
     * @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(EwsSSLProtocolSocketFactory.class));
    }

    public int hashCode() {
        return EwsSSLProtocolSocketFactory.class.hashCode();
    }

}