Mercurial > 510Connectbot
annotate src/com/five_ten_sg/connectbot/transport/AbsTransport.java @ 73:accf93be8c12 tn5250
update documentation; use xterm-256color as default terminal type
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Sat, 14 Jun 2014 08:54:34 -0700 |
| parents | 294435151b0c |
| children | 33eb63352be5 |
| rev | line source |
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| 0 | 1 /* |
| 2 * ConnectBot: simple, powerful, open-source SSH client for Android | |
| 3 * Copyright 2007 Kenny Root, Jeffrey Sharkey | |
| 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.util.List; | |
| 22 import java.util.Map; | |
| 23 | |
| 24 import com.five_ten_sg.connectbot.bean.HostBean; | |
| 25 import com.five_ten_sg.connectbot.bean.PortForwardBean; | |
| 26 import com.five_ten_sg.connectbot.service.TerminalBridge; | |
|
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27 import com.five_ten_sg.connectbot.service.TerminalKeyListener; |
| 0 | 28 import com.five_ten_sg.connectbot.service.TerminalManager; |
| 29 import android.content.Context; | |
| 30 import android.net.Uri; | |
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31 import android.util.Log; |
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32 import de.mud.terminal.vt320; |
| 0 | 33 |
| 34 /** | |
| 35 * @author Kenny Root | |
| 36 * | |
| 37 */ | |
| 38 public abstract class AbsTransport { | |
|
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39 protected String TAG; |
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40 protected TerminalManager manager; |
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41 protected TerminalBridge bridge; |
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42 protected HostBean host; |
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43 protected vt320 buffer = null; |
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44 protected String emulation; |
| 0 | 45 |
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46 class vt320Default extends vt320 { |
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47 @Override |
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48 public void debug(String s) { |
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49 Log.d(TAG, s); |
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50 } |
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51 |
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52 // terminal key listener sending to the host |
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53 @Override |
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54 public void write(byte[] b) { |
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55 try { |
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56 if (bridge.monitor != null) bridge.monitor.hostData(b); |
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57 |
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58 AbsTransport.this.write(b); |
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59 } |
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60 catch (IOException e) { |
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61 Log.e(TAG, "Problem writing outgoing data in vt320() thread", e); |
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62 } |
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63 } |
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64 @Override |
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65 public void write(int b) { |
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66 try { |
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67 if (bridge.monitor != null) bridge.monitor.hostData(b); |
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68 |
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69 AbsTransport.this.write(b); |
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70 } |
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71 catch (IOException e) { |
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72 Log.e(TAG, "Problem writing outgoing data in vt320() thread", e); |
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73 } |
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74 } |
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75 |
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76 // We don't use telnet sequences. |
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77 @Override |
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78 public void sendTelnetCommand(byte cmd) { |
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79 } |
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80 // We don't want remote to resize our window. |
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81 @Override |
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82 public void setWindowSize(int c, int r) { |
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83 } |
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84 // play beep noise |
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85 @Override |
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86 public void beep() { |
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87 if ((bridge.parent != null) && (bridge.parent.isShown())) |
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88 manager.playBeep(); |
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89 else |
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90 manager.sendActivityNotification(host); |
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91 } |
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92 |
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93 // test for changed screen contents |
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94 @Override |
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95 public void testChanged() { |
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96 if (bridge.monitor != null) bridge.monitor.testChanged(); |
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97 } |
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98 // relay socket writing to the screen |
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99 // bridge.monitor placement of new characters |
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100 @Override |
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101 public void putChar(int c, int l, char ch, int attributes) { |
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102 if (bridge.monitor != null) bridge.monitor.screenChanged(l, c); |
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103 |
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104 super.putChar(c, l, ch, attributes); |
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105 } |
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106 @Override |
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107 public void insertChar(int c, int l, char ch, int attributes) { |
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108 if (bridge.monitor != null) bridge.monitor.screenChanged(l, l, c, width - 1); |
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109 |
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110 super.insertChar(c, l, ch, attributes); |
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111 } |
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112 @Override |
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113 public void insertLine(int l, int n, boolean scrollDown) { |
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114 if (bridge.monitor != null) { |
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115 if (scrollDown) bridge.monitor.screenChanged(l, height - 1, 0, width - 1); |
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116 else bridge.monitor.screenChanged(0, l, 0, width - 1); |
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117 } |
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118 |
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119 super.insertLine(l, n, scrollDown); |
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120 } |
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121 @Override |
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122 public void deleteLine(int l) { |
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123 if (bridge.monitor != null) bridge.monitor.screenChanged(l, height - 1, 0, width - 1); |
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124 |
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125 super.deleteLine(l); |
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126 } |
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127 @Override |
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128 public void deleteChar(int c, int l) { |
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129 if (bridge.monitor != null) bridge.monitor.screenChanged(l, l, c, width - 1); |
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130 |
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131 super.deleteChar(c, l); |
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132 } |
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133 @Override |
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134 public void setCursorPosition(int c, int l) { |
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135 if (bridge.monitor != null) bridge.monitor.cursorMove(l, c); |
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136 |
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137 super.setCursorPosition(c, l); |
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138 } |
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139 |
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140 // monitor setField() |
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141 |
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142 }; |
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143 |
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144 |
| 0 | 145 public AbsTransport() {} |
| 146 | |
| 147 /** | |
| 148 * @return protocol part of the URI | |
| 149 */ | |
| 150 public static String getProtocolName() { | |
| 151 return "unknown"; | |
| 152 } | |
| 153 | |
| 154 /** | |
| 155 * Encode the current transport into a URI that can be passed via intent calls. | |
| 156 * @return URI to host | |
| 157 */ | |
| 11 | 158 public abstract Uri getUri(String input); |
| 159 | |
| 0 | 160 |
| 161 /** | |
| 162 * Causes transport to connect to the target host. After connecting but before a | |
| 163 * session is started, must call back to {@link TerminalBridge#onConnected()}. | |
| 164 * After that call a session may be opened. | |
| 165 */ | |
| 166 public abstract void connect(); | |
| 167 | |
| 168 /** | |
| 169 * Checks if read() will block. If there are no bytes remaining in | |
| 170 * the underlying transport, return true. | |
| 171 */ | |
| 172 public abstract boolean willBlock(); | |
| 173 | |
| 174 /** | |
| 175 * Reads from the transport. Transport must support reading into a byte array | |
| 176 * <code>buffer</code> at the start of <code>offset</code> and a maximum of | |
| 177 * <code>length</code> bytes. If the remote host disconnects, throw an | |
| 178 * {@link IOException}. | |
| 179 * @param buffer byte buffer to store read bytes into | |
| 180 * @param offset where to start writing in the buffer | |
| 181 * @param length maximum number of bytes to read | |
| 182 * @return number of bytes read | |
| 183 * @throws IOException when remote host disconnects | |
| 184 */ | |
| 185 public abstract int read(byte[] buffer, int offset, int length) throws IOException; | |
| 186 | |
| 187 /** | |
| 188 * Writes to the transport. If the host is not yet connected, simply return without | |
| 189 * doing anything. An {@link IOException} should be thrown if there is an error after | |
| 190 * connection. | |
| 191 * @param buffer bytes to write to transport | |
| 192 * @throws IOException when there is a problem writing after connection | |
| 193 */ | |
| 194 public abstract void write(byte[] buffer) throws IOException; | |
| 195 | |
| 196 /** | |
| 197 * Writes to the transport. See {@link #write(byte[])} for behavior details. | |
| 198 * @param c character to write to the transport | |
| 199 * @throws IOException when there is a problem writing after connection | |
| 200 */ | |
| 201 public abstract void write(int c) throws IOException; | |
| 202 | |
| 203 /** | |
| 204 * Flushes the write commands to the transport. | |
| 205 * @throws IOException when there is a problem writing after connection | |
| 206 */ | |
| 207 public abstract void flush() throws IOException; | |
| 208 | |
| 209 /** | |
| 210 * Closes the connection to the terminal. Note that the resulting failure to read | |
| 211 * should call {@link TerminalBridge#dispatchDisconnect(boolean)}. | |
| 212 */ | |
| 213 public abstract void close(); | |
| 214 | |
| 215 /** | |
| 216 * Tells the transport what dimensions the display is currently | |
| 217 * @param columns columns of text | |
| 218 * @param rows rows of text | |
| 219 * @param width width in pixels | |
| 220 * @param height height in pixels | |
| 221 */ | |
| 222 public abstract void setDimensions(int columns, int rows, int width, int height); | |
| 223 | |
| 224 public void setOptions(Map<String, String> options) { | |
| 225 // do nothing | |
| 226 } | |
| 227 | |
| 228 public Map<String, String> getOptions() { | |
| 229 return null; | |
| 230 } | |
| 231 | |
| 232 public void setCompression(boolean compression) { | |
| 233 // do nothing | |
| 234 } | |
| 235 | |
| 236 public void setHttpproxy(String httpproxy) { | |
| 237 // do nothing | |
| 238 } | |
| 239 | |
| 240 public void setUseAuthAgent(String useAuthAgent) { | |
| 241 // do nothing | |
| 242 } | |
| 243 | |
| 244 public String getEmulation() { | |
| 245 return emulation; | |
| 246 } | |
| 247 | |
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248 protected vt320 setupTransportBuffer() { |
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249 int scrollback = (host.getWantSession()) ? manager.getScrollback() : 0; |
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250 buffer.setBufferSize(scrollback); |
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251 buffer.setDisplay(bridge); |
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252 return buffer; |
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253 } |
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254 |
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255 public vt320 getTransportBuffer() { |
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256 buffer = new vt320Default(); |
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257 return setupTransportBuffer(); |
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258 } |
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259 |
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260 public void setLinks(TerminalManager manager, TerminalBridge bridge, HostBean host, String emulation) { |
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261 this.manager = manager; |
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262 this.bridge = bridge; |
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263 this.host = host; |
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264 this.emulation = emulation; |
| 0 | 265 } |
| 266 | |
| 267 /** | |
| 268 * Whether or not this transport type can forward ports. | |
| 269 * @return true on ability to forward ports | |
| 270 */ | |
| 271 public boolean canForwardPorts() { | |
| 272 return false; | |
| 273 } | |
| 274 | |
| 275 /** | |
| 276 * Adds the {@link PortForwardBean} to the list. | |
| 277 * @param portForward the port forward bean to add | |
| 278 * @return true on successful addition | |
| 279 */ | |
| 280 public boolean addPortForward(PortForwardBean portForward) { | |
| 281 return false; | |
| 282 } | |
| 283 | |
| 284 /** | |
| 285 * Enables a port forward member. After calling this method, the port forward should | |
| 286 * be operational iff it could be enabled by the transport. | |
| 287 * @param portForward member of our current port forwards list to enable | |
| 288 * @return true on successful port forward setup | |
| 289 */ | |
| 290 public boolean enablePortForward(PortForwardBean portForward) { | |
| 291 return false; | |
| 292 } | |
| 293 | |
| 294 /** | |
| 295 * Disables a port forward member. After calling this method, the port forward should | |
| 296 * be non-functioning iff it could be disabled by the transport. | |
| 297 * @param portForward member of our current port forwards list to enable | |
| 298 * @return true on successful port forward tear-down | |
| 299 */ | |
| 300 public boolean disablePortForward(PortForwardBean portForward) { | |
| 301 return false; | |
| 302 } | |
| 303 | |
| 304 /** | |
| 305 * Removes the {@link PortForwardBean} from the available port forwards. | |
| 306 * @param portForward the port forward bean to remove | |
| 307 * @return true on successful removal | |
| 308 */ | |
| 309 public boolean removePortForward(PortForwardBean portForward) { | |
| 310 return false; | |
| 311 } | |
| 312 | |
| 313 /** | |
| 314 * Gets a list of the {@link PortForwardBean} currently used by this transport. | |
| 315 * @return the list of port forwards | |
| 316 */ | |
| 317 public List<PortForwardBean> getPortForwards() { | |
| 318 return null; | |
| 319 } | |
| 320 | |
| 321 /** | |
| 322 * Whether or not this transport type can transfer files. | |
| 323 * @return true on ability to transfer files | |
| 324 */ | |
| 325 public boolean canTransferFiles() { | |
| 326 return false; | |
| 327 } | |
| 328 | |
| 329 /** | |
| 330 * Downloads the specified remote file to a local folder. | |
| 331 * @param remoteFile The path to the remote file to be downloaded. Must be non-null. | |
| 332 * @param localFolder The path to local folder. Null = default external storage folder. | |
| 333 * @return true on success, false on failure | |
| 334 */ | |
| 335 public boolean downloadFile(String remoteFile, String localFolder) { | |
| 336 return false; | |
| 337 } | |
| 338 | |
| 339 /** | |
| 340 * Uploads the specified local file to the remote host. | |
| 341 * @param localFile The path to the local file to be uploaded. Must be non-null. | |
| 342 * @param remoteFolder The path to the remote directory. Null == default remote directory. | |
| 343 * @return true on success, false on failure | |
| 344 */ | |
| 345 public boolean uploadFile(String localFile, String remoteFile, | |
| 346 String remoteFolder, String mode) { | |
| 347 return false; | |
| 348 } | |
| 349 | |
| 350 | |
| 351 /** | |
| 352 * @return int default port for protocol | |
| 353 */ | |
| 354 public abstract int getDefaultPort(); | |
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355 public abstract boolean isConnected(); |
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356 public abstract boolean isSessionOpen(); |
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357 public abstract boolean isAuthenticated(); |
| 0 | 358 |
| 359 /** | |
| 360 * @param username | |
| 361 * @param hostname | |
| 362 * @param port | |
| 363 * @return | |
| 364 */ | |
| 365 public abstract String getDefaultNickname(String username, String hostname, int port); | |
| 366 | |
| 367 /** | |
| 368 * @param uri | |
| 369 * @param selectionKeys | |
| 370 * @param selectionValues | |
| 371 */ | |
| 372 public abstract void getSelectionArgs(Uri uri, Map<String, String> selection); | |
| 373 | |
| 374 /** | |
| 375 * @param uri | |
| 376 * @return | |
| 377 */ | |
| 378 public abstract HostBean createHost(Uri uri); | |
| 379 | |
| 380 /** | |
| 381 * @param context context containing the correct resources | |
| 382 * @return string that hints at the format for connection | |
| 383 */ | |
| 11 | 384 public abstract String getFormatHint(Context context); |
| 0 | 385 |
| 386 /** | |
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387 * @return do we use the network |
| 0 | 388 */ |
| 389 public abstract boolean usesNetwork(); | |
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390 |
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391 /** |
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392 * @return do we need a relay object to read from the transport |
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393 * and send the data into the vt320 buffer |
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394 */ |
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395 public boolean needsRelay() { |
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396 return true; |
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397 } |
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398 |
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399 /** |
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400 * @return a key listener |
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401 */ |
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402 public TerminalKeyListener getTerminalKeyListener() { |
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403 return new TerminalKeyListener(manager, bridge, buffer, host.getEncoding()); |
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404 } |
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405 |
| 0 | 406 } |