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3
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1
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2 /**
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3 * @(#)SocketConnector.java
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4 * @author Stephen M. Kennedy
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5 *
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6 * Copyright: Copyright (c) 2001
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7 *
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8 * This program is free software; you can redistribute it and/or modify
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9 * it under the terms of the GNU General Public License as published by
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10 * the Free Software Foundation; either version 2, or (at your option)
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11 * any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful,
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14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 * GNU General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU General Public License
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19 * along with this software; see the file COPYING. If not, write to
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20 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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21 * Boston, MA 02111-1307 USA
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22 *
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23 */
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24 package org.tn5250j.framework.transport;
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25
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26 import java.net.Socket;
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27
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28 import org.tn5250j.TN5250jConstants;
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29 import org.tn5250j.tools.logging.TN5250jLogFactory;
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30 import org.tn5250j.tools.logging.TN5250jLogger;
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31
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32 public class SocketConnector {
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33
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34 String sslType = null;
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35
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36 TN5250jLogger logger;
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37
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38 /**
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39 * Creates a new instance that creates a plain socket by default.
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40 */
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41 public SocketConnector() {
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42 logger = TN5250jLogFactory.getLogger(getClass());
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43 }
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44
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45 /**
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46 * Set the type of SSL connection to use. Specify null or an empty string
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47 * to use a plain socket.
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48 * @param type The SSL connection type
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49 * @see org.tn5250j.framework.transport.SSLConstants
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50 */
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51 public void setSSLType(String type) {
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52 sslType = type;
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53 }
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54
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55 /**
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56 * Create a new client Socket to the given destination and port. If an SSL
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57 * socket type has not been specified <i>(by setSSLType(String))</i>, then
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58 * a plain socket will be created. Otherwise, a new SSL socket of the
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59 * specified type will be created.
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60 * @param destination
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61 * @param port
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62 * @return a new client socket, or null if
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63 */
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64 public Socket createSocket(String destination, int port) {
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65
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66 Socket socket = null;
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67 Exception ex = null;
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68
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69 if (sslType == null || sslType.trim().length() == 0 ||
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70 sslType.toUpperCase().equals(TN5250jConstants.SSL_TYPE_NONE)) {
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71 logger.info("Creating Plain Socket");
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72 try {
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73 // Use Socket Constructor!!! SocketFactory for jdk 1.4
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74 socket = new Socket(destination,port);
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75 } catch (Exception e) {
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76 ex = e;
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77 }
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78 } else { //SSL SOCKET
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79
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80 logger.info("Creating SSL ["+sslType+"] Socket");
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81
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82 SSLInterface sslIf = null;
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83
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84 String sslImplClassName =
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85 "org.tn5250j.framework.transport.SSL.SSLImplementation";
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86 try {
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87 Class<?> c = Class.forName(sslImplClassName);
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88 sslIf = (SSLInterface)c.newInstance();
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89 } catch (Exception e) {
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90 ex = new Exception("Failed to create SSLInterface Instance. " +
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91 "Message is ["+e.getMessage()+"]");
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92 }
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93
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94 if (sslIf != null) {
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95 sslIf.init(sslType);
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96 socket = sslIf.createSSLSocket(destination,port);
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97 }
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98 }
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99
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100 if (ex != null) {
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101 logger.error(ex);
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102 }
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103 if (socket == null) {
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104 logger.warn("No socket was created");
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105 }
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106 return socket;
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107 }
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108
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109
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110 } |
