annotate src/com/five_ten_sg/connectbot/transport/TN5250.java @ 47:a3fd10a8c0de tn5250

start tn5250 integration
author Carl Byington <carl@five-ten-sg.com>
date Wed, 11 Jun 2014 10:03:40 -0700
parents 34ce32c4e807
children 8887bff45dee
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1 /*
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2 * 510ConnectBot
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3 * Copyright 2014 Carl Byington
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4 *
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5 * Licensed under the Apache License, Version 2.0 (the "License");
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6 * you may not use this file except in compliance with the License.
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7 * You may obtain a copy of the License at
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8 *
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9 * http://www.apache.org/licenses/LICENSE-2.0
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10 *
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11 * Unless required by applicable law or agreed to in writing, software
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12 * distributed under the License is distributed on an "AS IS" BASIS,
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13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 * See the License for the specific language governing permissions and
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15 * limitations under the License.
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16 */
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17
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18 package com.five_ten_sg.connectbot.transport;
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19
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20 import java.io.IOException;
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21 import java.io.InputStream;
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22 import java.io.OutputStream;
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23 import java.net.Socket;
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24 import java.net.SocketException;
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25 import java.net.UnknownHostException;
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26 import java.util.List;
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27 import java.util.Map;
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28 import java.util.regex.Matcher;
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29 import java.util.regex.Pattern;
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30
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31 import org.tn5250j.framework.tn5250.Screen5250;
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32 import org.tn5250j.framework.tn5250.tnvt;
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33
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34 import com.five_ten_sg.connectbot.R;
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35 import com.five_ten_sg.connectbot.bean.HostBean;
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36 import com.five_ten_sg.connectbot.bean.PortForwardBean;
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37 import com.five_ten_sg.connectbot.service.TerminalBridge;
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38 import com.five_ten_sg.connectbot.service.TerminalKeyListener;
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39 import com.five_ten_sg.connectbot.service.TerminalManager;
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40 import com.five_ten_sg.connectbot.util.HostDatabase;
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41 import android.content.Context;
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42 import android.net.Uri;
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43 import android.util.Log;
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44 import de.mud.terminal.vt320;
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45
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46
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47 /**
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48 * @author Carl Byington
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49 *
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50 */
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51 public class TN5250 extends AbsTransport {
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52 private static final String PROTOCOL = "tn5250";
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53 private static final String TAG = "ConnectBot.tn5250";
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54 private static final int DEFAULT_PORT = 23;
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55
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56 private Screen5250 screen52;
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57 private tnvt handler = null;
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58 private Socket socket;
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59 private boolean connected = false;
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60
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61 static final Pattern hostmask;
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62 static {
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63 hostmask = Pattern.compile("^([0-9a-z.-]+)(:(\\d+))?$", Pattern.CASE_INSENSITIVE);
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64 }
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65
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66
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67 class vt320x5250 extends vt320 {
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68 @Override
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69 public void debug(String s) {
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70 Log.d(TAG, s);
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71 }
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72 @Override
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73 public void write(byte[] b) {
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74 }
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75 @Override
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76 public void write(int b) {
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77 }
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78 // bridge.monitor placement of new characters
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79 @Override
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80 public void putChar(int c, int l, char ch, int attributes) {
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81 if (bridge.monitor != null) bridge.monitor.screenChanged(l, c);
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82 super.putChar(c, l, ch, attributes);
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83 }
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84 @Override
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85 public void setCursorPosition(int c, int l) {
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86 if (bridge.monitor != null) bridge.monitor.cursorMove(l, c);
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87 super.setCursorPosition(c, l);
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88 }
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89 };
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90
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91
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92 class Terminal5250KeyListener extends TerminalKeyListener {
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93 public Terminal5250KeyListener(TerminalManager manager,
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94 TerminalBridge bridge,
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95 vt320 buffer,
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96 String encoding) {
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97 super(manager, bridge, buffer, encoding);
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98 }
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99 };
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100
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101 public TN5250() {
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102 super();
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103 }
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104
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105
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106 /**
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107 * @return protocol part of the URI
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108 */
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109 public static String getProtocolName() {
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110 return PROTOCOL;
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111 }
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112
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113
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114 /**
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115 * Encode the current transport into a URI that can be passed via intent calls.
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116 * @return URI to host
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117 */
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118 public Uri getUri(String input) {
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119 Matcher matcher = hostmask.matcher(input);
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120
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121 if (!matcher.matches())
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122 return null;
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123
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124 StringBuilder sb = new StringBuilder();
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125 sb.append(PROTOCOL)
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126 .append("://")
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127 .append(matcher.group(1));
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128 String portString = matcher.group(3);
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129 int port = DEFAULT_PORT;
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130
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131 if (portString != null) {
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132 try {
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133 port = Integer.parseInt(portString);
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134
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135 if (port < 1 || port > 65535) {
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136 port = DEFAULT_PORT;
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137 }
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138 }
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139 catch (NumberFormatException nfe) {
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140 // Keep the default port
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141 }
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142 }
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143
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144 if (port != DEFAULT_PORT) {
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145 sb.append(':');
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146 sb.append(port);
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147 }
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148
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149 sb.append("/#")
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150 .append(Uri.encode(input));
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151 Uri uri = Uri.parse(sb.toString());
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152 return uri;
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153 }
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154
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155
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156 /**
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157 * Causes transport to connect to the target host. After connecting but before a
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158 * session is started, must call back to {@link TerminalBridge#onConnected()}.
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159 * After that call a session may be opened.
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160 */
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161 @Override
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162 public void connect() {
30
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163 screen52 = new Screen5250();
29
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164 handler = new tnvt(screen52, true, false, bridge, manager);
37
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165 handler.setSSLType("TLS");
32
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diff changeset
166 screen52.setVT(handler);
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diff changeset
167 screen52.setBuffer(buffer);
23
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diff changeset
168 connected = handler.connect(host.getHostname(), host.getPort());
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169 if (connected) bridge.onConnected();
11
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170 }
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171
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172
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173 /**
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174 * Checks if read() will block. If there are no bytes remaining in
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175 * the underlying transport, return true.
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176 */
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177 @Override
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178 public boolean willBlock() {
29
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179 // we don't use a relay thread between the transport and the vt320 buffer
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180 return true;
11
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181 }
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182
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183
11
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184 /**
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185 * Reads from the transport. Transport must support reading into a byte array
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186 * <code>buffer</code> at the start of <code>offset</code> and a maximum of
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187 * <code>length</code> bytes. If the remote host disconnects, throw an
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188 * {@link IOException}.
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189 * @param buffer byte buffer to store read bytes into
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190 * @param offset where to start writing in the buffer
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191 * @param length maximum number of bytes to read
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192 * @return number of bytes read
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193 * @throws IOException when remote host disconnects
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194 */
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195 public int read(byte[] buffer, int offset, int length) throws IOException {
29
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196 // we don't use a relay thread between the transport and the vt320 buffer
11
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197 return 0;
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198 }
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199
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200
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parents:
diff changeset
201 /**
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202 * Writes to the transport. If the host is not yet connected, simply return without
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203 * doing anything. An {@link IOException} should be thrown if there is an error after
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204 * connection.
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205 * @param buffer bytes to write to transport
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206 * @throws IOException when there is a problem writing after connection
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207 */
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208 public void write(byte[] buffer) throws IOException {
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209 }
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210
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211
11
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212 /**
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213 * Writes to the transport. See {@link #write(byte[])} for behavior details.
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214 * @param c character to write to the transport
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215 * @throws IOException when there is a problem writing after connection
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parents:
diff changeset
216 */
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parents:
diff changeset
217 public void write(int c) throws IOException {
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parents:
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218 }
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219
31
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diff changeset
220
11
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221 /**
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222 * Flushes the write commands to the transport.
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223 * @throws IOException when there is a problem writing after connection
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parents:
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224 */
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parents:
diff changeset
225 public void flush() throws IOException {
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226 }
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parents:
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227
31
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diff changeset
228
11
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229 /**
32
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diff changeset
230 * Closes the connection to the terminal.
11
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231 */
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parents:
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232 public void close() {
13
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233 handler.disconnect();
11
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234 connected = false;
32
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diff changeset
235 bridge.dispatchDisconnect(false);
11
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236 }
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237
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238
11
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239 /**
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parents:
diff changeset
240 * Tells the transport what dimensions the display is currently
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241 * @param columns columns of text
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242 * @param rows rows of text
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243 * @param width width in pixels
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244 * @param height height in pixels
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parents:
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245 */
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parents:
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246 @Override
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parents:
diff changeset
247 public void setDimensions(int columns, int rows, int width, int height) {
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248 // do nothing
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parents:
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249 }
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parents:
diff changeset
250
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parents:
diff changeset
251
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252 @Override
45
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parents: 43
diff changeset
253 public vt320 getTransportBuffer() {
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diff changeset
254 buffer = new vt320x5250();
47
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parents: 46
diff changeset
255 return setupTransportBuffer();
45
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parents: 43
diff changeset
256 }
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diff changeset
257
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parents: 43
diff changeset
258
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diff changeset
259 @Override
11
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260 public int getDefaultPort() {
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261 return DEFAULT_PORT;
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parents:
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262 }
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parents:
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263
31
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diff changeset
264
11
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parents:
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265 @Override
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parents:
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266 public boolean isConnected() {
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267 return connected;
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268 }
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269
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diff changeset
270
11
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271 @Override
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272 public boolean isSessionOpen() {
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273 return connected;
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274 }
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275
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276
11
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277 @Override
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parents:
diff changeset
278 public boolean isAuthenticated() {
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279 return connected;
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parents:
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280 }
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parents:
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281
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parents:
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282
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parents:
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283 @Override
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284 public String getDefaultNickname(String username, String hostname, int port) {
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285 if (port == DEFAULT_PORT) {
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parents:
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286 return String.format("%s", hostname);
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287 }
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parents:
diff changeset
288 else {
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parents:
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289 return String.format("%s:%d", hostname, port);
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290 }
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parents:
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291 }
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parents:
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292
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diff changeset
293
11
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294 @Override
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parents:
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295 public void getSelectionArgs(Uri uri, Map<String, String> selection) {
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parents:
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296 selection.put(HostDatabase.FIELD_HOST_PROTOCOL, PROTOCOL);
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parents:
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297 selection.put(HostDatabase.FIELD_HOST_NICKNAME, uri.getFragment());
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parents:
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298 selection.put(HostDatabase.FIELD_HOST_HOSTNAME, uri.getHost());
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parents:
diff changeset
299 int port = uri.getPort();
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diff changeset
300
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parents:
diff changeset
301 if (port < 0)
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diff changeset
302 port = DEFAULT_PORT;
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diff changeset
303
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parents:
diff changeset
304 selection.put(HostDatabase.FIELD_HOST_PORT, Integer.toString(port));
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305 }
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parents:
diff changeset
306
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parents:
diff changeset
307
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parents:
diff changeset
308 @Override
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parents:
diff changeset
309 public HostBean createHost(Uri uri) {
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parents:
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310 HostBean host = new HostBean();
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parents:
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311 host.setProtocol(PROTOCOL);
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312 host.setHostname(uri.getHost());
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313 int port = uri.getPort();
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314
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315 if (port < 0)
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316 port = DEFAULT_PORT;
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317
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318 host.setPort(port);
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319 String nickname = uri.getFragment();
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320
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321 if (nickname == null || nickname.length() == 0) {
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322 host.setNickname(getDefaultNickname(host.getUsername(),
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323 host.getHostname(), host.getPort()));
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324 }
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325 else {
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326 host.setNickname(uri.getFragment());
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327 }
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328
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329 return host;
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330 }
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331
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332
12
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333 public String getFormatHint(Context context) {
11
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334 return String.format("%s:%s",
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335 context.getString(R.string.format_hostname),
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336 context.getString(R.string.format_port));
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337 }
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338
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339
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340 @Override
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341 public boolean usesNetwork() {
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342 return true;
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343 }
29
017eeed8332c start tn5250 integration
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diff changeset
344
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diff changeset
345
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diff changeset
346 @Override
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diff changeset
347 public boolean needsRelay() {
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348 // we don't use a relay thread between the transport and the vt320 buffer
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349 return false;
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diff changeset
350 }
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diff changeset
351
43
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diff changeset
352 public TerminalKeyListener getTerminalKeyListener() {
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diff changeset
353 return new Terminal5250KeyListener(manager, bridge, buffer, host.getEncoding());
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diff changeset
354 }
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diff changeset
355
11
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356 }