Mercurial > 510Connectbot
annotate src/com/five_ten_sg/connectbot/transport/TN5250.java @ 31:139394237973 tn5250
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| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Tue, 10 Jun 2014 12:00:07 -0700 |
| parents | d738f6b876fe |
| children | b086dd794dba |
| rev | line source |
|---|---|
| 11 | 1 /* |
| 2 * 510ConnectBot | |
| 3 * Copyright 2014 Carl Byington | |
| 4 * | |
| 5 * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 6 * you may not use this file except in compliance with the License. | |
| 7 * You may obtain a copy of the License at | |
| 8 * | |
| 9 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 * | |
| 11 * Unless required by applicable law or agreed to in writing, software | |
| 12 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 * See the License for the specific language governing permissions and | |
| 15 * limitations under the License. | |
| 16 */ | |
| 17 | |
| 18 package com.five_ten_sg.connectbot.transport; | |
| 19 | |
| 20 import java.io.IOException; | |
| 21 import java.io.InputStream; | |
| 22 import java.io.OutputStream; | |
| 23 import java.net.Socket; | |
| 24 import java.net.SocketException; | |
| 13 | 25 import java.net.UnknownHostException; |
| 11 | 26 import java.util.List; |
| 27 import java.util.Map; | |
| 13 | 28 import java.util.regex.Matcher; |
| 29 import java.util.regex.Pattern; | |
| 11 | 30 |
| 12 | 31 import org.tn5250j.framework.tn5250.Screen5250; |
| 32 import org.tn5250j.framework.tn5250.tnvt; | |
| 33 | |
| 13 | 34 import com.five_ten_sg.connectbot.R; |
| 11 | 35 import com.five_ten_sg.connectbot.bean.HostBean; |
| 36 import com.five_ten_sg.connectbot.bean.PortForwardBean; | |
| 37 import com.five_ten_sg.connectbot.service.TerminalBridge; | |
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38 import com.five_ten_sg.connectbot.service.TerminalKeyListener; |
| 11 | 39 import com.five_ten_sg.connectbot.service.TerminalManager; |
| 40 import com.five_ten_sg.connectbot.util.HostDatabase; | |
| 41 import android.content.Context; | |
| 42 import android.net.Uri; | |
| 13 | 43 import android.util.Log; |
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44 import de.mud.terminal.vt320; |
| 11 | 45 |
| 46 | |
| 47 /** | |
| 48 * @author Carl Byington | |
| 49 * | |
| 50 */ | |
| 51 public class TN5250 extends AbsTransport { | |
| 52 private static final String PROTOCOL = "tn5250"; | |
| 53 private static final String TAG = "ConnectBot.tn5250"; | |
| 54 private static final int DEFAULT_PORT = 23; | |
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55 |
| 11 | 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 int width; |
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60 private int height; |
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61 private boolean connected = false; |
| 11 | 62 |
| 12 | 63 static final Pattern hostmask; |
| 64 static { | |
| 65 hostmask = Pattern.compile("^([0-9a-z.-]+)(:(\\d+))?$", Pattern.CASE_INSENSITIVE); | |
| 66 } | |
| 67 | |
| 68 | |
| 11 | 69 public TN5250() { |
| 70 super(); | |
| 71 } | |
| 72 | |
| 73 | |
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74 /** |
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75 * @return protocol part of the URI |
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76 */ |
| 11 | 77 public static String getProtocolName() { |
| 78 return PROTOCOL; | |
| 79 } | |
| 80 | |
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81 |
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82 /** |
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83 * Encode the current transport into a URI that can be passed via intent calls. |
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84 * @return URI to host |
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85 */ |
| 12 | 86 public Uri getUri(String input) { |
| 87 Matcher matcher = hostmask.matcher(input); | |
| 88 | |
| 89 if (!matcher.matches()) | |
| 90 return null; | |
| 91 | |
| 92 StringBuilder sb = new StringBuilder(); | |
| 93 sb.append(PROTOCOL) | |
| 94 .append("://") | |
| 95 .append(matcher.group(1)); | |
| 96 String portString = matcher.group(3); | |
| 97 int port = DEFAULT_PORT; | |
| 98 | |
| 99 if (portString != null) { | |
| 100 try { | |
| 101 port = Integer.parseInt(portString); | |
| 102 | |
| 103 if (port < 1 || port > 65535) { | |
| 104 port = DEFAULT_PORT; | |
| 105 } | |
| 106 } | |
| 107 catch (NumberFormatException nfe) { | |
| 108 // Keep the default port | |
| 109 } | |
| 110 } | |
| 111 | |
| 112 if (port != DEFAULT_PORT) { | |
| 113 sb.append(':'); | |
| 114 sb.append(port); | |
| 115 } | |
| 116 | |
| 117 sb.append("/#") | |
| 118 .append(Uri.encode(input)); | |
| 119 Uri uri = Uri.parse(sb.toString()); | |
| 120 return uri; | |
| 11 | 121 } |
| 122 | |
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123 |
| 11 | 124 /** |
| 125 * Causes transport to connect to the target host. After connecting but before a | |
| 126 * session is started, must call back to {@link TerminalBridge#onConnected()}. | |
| 127 * After that call a session may be opened. | |
| 128 */ | |
| 129 @Override | |
| 130 public void connect() { | |
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131 screen52 = new Screen5250(); |
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132 handler = new tnvt(screen52, true, false, bridge, manager); |
| 23 | 133 connected = handler.connect(host.getHostname(), host.getPort()); |
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134 if (connected) bridge.onConnected(); |
| 11 | 135 } |
| 136 | |
| 137 | |
| 138 /** | |
| 139 * Checks if read() will block. If there are no bytes remaining in | |
| 140 * the underlying transport, return true. | |
| 141 */ | |
| 142 @Override | |
| 143 public boolean willBlock() { | |
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144 // we don't use a relay thread between the transport and the vt320 buffer |
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145 return true; |
| 11 | 146 } |
| 147 | |
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148 |
| 11 | 149 /** |
| 150 * Reads from the transport. Transport must support reading into a byte array | |
| 151 * <code>buffer</code> at the start of <code>offset</code> and a maximum of | |
| 152 * <code>length</code> bytes. If the remote host disconnects, throw an | |
| 153 * {@link IOException}. | |
| 154 * @param buffer byte buffer to store read bytes into | |
| 155 * @param offset where to start writing in the buffer | |
| 156 * @param length maximum number of bytes to read | |
| 157 * @return number of bytes read | |
| 158 * @throws IOException when remote host disconnects | |
| 159 */ | |
| 160 public int read(byte[] buffer, int offset, int length) throws IOException { | |
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161 // we don't use a relay thread between the transport and the vt320 buffer |
| 11 | 162 return 0; |
| 163 } | |
| 164 | |
| 165 | |
| 166 /** | |
| 167 * Writes to the transport. If the host is not yet connected, simply return without | |
| 168 * doing anything. An {@link IOException} should be thrown if there is an error after | |
| 169 * connection. | |
| 170 * @param buffer bytes to write to transport | |
| 171 * @throws IOException when there is a problem writing after connection | |
| 172 */ | |
| 173 public void write(byte[] buffer) throws IOException { | |
| 174 } | |
| 175 | |
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176 |
| 11 | 177 /** |
| 178 * Writes to the transport. See {@link #write(byte[])} for behavior details. | |
| 179 * @param c character to write to the transport | |
| 180 * @throws IOException when there is a problem writing after connection | |
| 181 */ | |
| 182 public void write(int c) throws IOException { | |
| 183 } | |
| 184 | |
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185 |
| 11 | 186 /** |
| 187 * Flushes the write commands to the transport. | |
| 188 * @throws IOException when there is a problem writing after connection | |
| 189 */ | |
| 190 public void flush() throws IOException { | |
| 191 } | |
| 192 | |
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193 |
| 11 | 194 /** |
| 195 * Closes the connection to the terminal. Note that the resulting failure to read | |
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196 * should call {@link TerminalBridge#dispatchDisconnect(boolean)}. !!! |
| 11 | 197 */ |
| 198 public void close() { | |
| 13 | 199 handler.disconnect(); |
| 11 | 200 connected = false; |
| 201 } | |
| 202 | |
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203 |
| 11 | 204 /** |
| 205 * Tells the transport what dimensions the display is currently | |
| 206 * @param columns columns of text | |
| 207 * @param rows rows of text | |
| 208 * @param width width in pixels | |
| 209 * @param height height in pixels | |
| 210 */ | |
| 211 @Override | |
| 212 public void setDimensions(int columns, int rows, int width, int height) { | |
| 213 // do nothing | |
| 214 } | |
| 215 | |
| 216 | |
| 217 @Override | |
| 218 public int getDefaultPort() { | |
| 219 return DEFAULT_PORT; | |
| 220 } | |
| 221 | |
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222 |
| 11 | 223 @Override |
| 224 public boolean isConnected() { | |
| 225 return connected; | |
| 226 } | |
| 227 | |
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228 |
| 11 | 229 @Override |
| 230 public boolean isSessionOpen() { | |
| 231 return connected; | |
| 232 } | |
| 233 | |
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234 |
| 11 | 235 @Override |
| 236 public boolean isAuthenticated() { | |
| 237 return connected; | |
| 238 } | |
| 239 | |
| 240 | |
| 241 @Override | |
| 242 public String getDefaultNickname(String username, String hostname, int port) { | |
| 243 if (port == DEFAULT_PORT) { | |
| 244 return String.format("%s", hostname); | |
| 245 } | |
| 246 else { | |
| 247 return String.format("%s:%d", hostname, port); | |
| 248 } | |
| 249 } | |
| 250 | |
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251 |
| 11 | 252 @Override |
| 253 public void getSelectionArgs(Uri uri, Map<String, String> selection) { | |
| 254 selection.put(HostDatabase.FIELD_HOST_PROTOCOL, PROTOCOL); | |
| 255 selection.put(HostDatabase.FIELD_HOST_NICKNAME, uri.getFragment()); | |
| 256 selection.put(HostDatabase.FIELD_HOST_HOSTNAME, uri.getHost()); | |
| 257 int port = uri.getPort(); | |
| 258 | |
| 259 if (port < 0) | |
| 260 port = DEFAULT_PORT; | |
| 261 | |
| 262 selection.put(HostDatabase.FIELD_HOST_PORT, Integer.toString(port)); | |
| 263 } | |
| 264 | |
| 265 | |
| 266 @Override | |
| 267 public HostBean createHost(Uri uri) { | |
| 268 HostBean host = new HostBean(); | |
| 269 host.setProtocol(PROTOCOL); | |
| 270 host.setHostname(uri.getHost()); | |
| 271 int port = uri.getPort(); | |
| 272 | |
| 273 if (port < 0) | |
| 274 port = DEFAULT_PORT; | |
| 275 | |
| 276 host.setPort(port); | |
| 277 String nickname = uri.getFragment(); | |
| 278 | |
| 279 if (nickname == null || nickname.length() == 0) { | |
| 280 host.setNickname(getDefaultNickname(host.getUsername(), | |
| 281 host.getHostname(), host.getPort())); | |
| 282 } | |
| 283 else { | |
| 284 host.setNickname(uri.getFragment()); | |
| 285 } | |
| 286 | |
| 287 return host; | |
| 288 } | |
| 289 | |
| 290 | |
| 12 | 291 public String getFormatHint(Context context) { |
| 11 | 292 return String.format("%s:%s", |
| 293 context.getString(R.string.format_hostname), | |
| 294 context.getString(R.string.format_port)); | |
| 295 } | |
| 296 | |
| 297 | |
| 298 @Override | |
| 299 public boolean usesNetwork() { | |
| 300 return true; | |
| 301 } | |
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302 |
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303 |
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304 @Override |
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305 public boolean needsRelay() { |
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306 // we don't use a relay thread between the transport and the vt320 buffer |
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307 return false; |
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308 } |
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309 |
| 11 | 310 } |