Mercurial > 510Connectbot
annotate src/com/five_ten_sg/connectbot/transport/AbsTransport.java @ 380:162c001c8142
fix url link in help file
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Mon, 04 Aug 2014 15:25:34 -0700 |
| parents | 2a7199ad90be |
| children |
| 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 String homeDirectory; |
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43 protected HostBean host; |
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44 protected vt320 buffer = null; |
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45 protected String emulation; |
| 0 | 46 |
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47 class vt320Default extends vt320 { |
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48 @Override |
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49 public void debug(String s) { |
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50 Log.d(TAG, s); |
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51 } |
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52 |
| 100 | 53 // monitor injecting a field |
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54 //@Override |
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55 //public void setField(int l, int c, char [] data) |
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56 // implementation in the base vt320 |
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57 |
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58 // terminal key listener found special key, send notification to monitor |
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59 @Override |
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60 public void monitorKey(boolean down) { |
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61 if (bridge.monitor != null) bridge.monitor.keyState(down); |
| 100 | 62 } |
| 63 | |
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64 // terminal key listener sending to the host |
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65 @Override |
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66 public void write(byte[] b) { |
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67 try { |
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68 AbsTransport.this.write(b); |
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69 } |
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70 catch (IOException e) { |
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71 Log.e(TAG, "Problem writing outgoing data in vt320() thread", e); |
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72 } |
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73 } |
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74 @Override |
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75 public void write(int b) { |
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76 try { |
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77 AbsTransport.this.write(b); |
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78 } |
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79 catch (IOException e) { |
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80 Log.e(TAG, "Problem writing outgoing data in vt320() thread", e); |
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81 } |
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82 } |
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83 |
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84 // We don't use telnet sequences. |
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85 @Override |
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86 public void sendTelnetCommand(byte cmd) { |
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87 } |
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88 // We don't want remote to resize our window. |
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89 @Override |
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90 public void setWindowSize(int c, int r) { |
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91 } |
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92 // play beep noise |
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93 @Override |
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94 public void beep() { |
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95 if ((bridge.parent != null) && (bridge.parent.isShown())) |
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96 manager.playBeep(); |
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97 else |
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98 manager.sendActivityNotification(host); |
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99 } |
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100 |
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101 // test for changed screen contents |
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102 @Override |
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103 public void testChanged() { |
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104 if (bridge.monitor != null) bridge.monitor.testChanged(); |
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105 } |
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106 // relay socket writing to the screen |
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107 // bridge.monitor placement of new characters |
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108 @Override |
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109 public void putChar(int c, int l, char ch, int attributes) { |
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110 if (bridge.monitor != null) bridge.monitor.screenChanged(l, c); |
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111 |
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112 super.putChar(c, l, ch, attributes); |
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113 } |
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114 @Override |
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115 public void insertChar(int c, int l, char ch, int attributes) { |
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116 if (bridge.monitor != null) bridge.monitor.screenChanged(l, l, c, width - 1); |
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117 |
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118 super.insertChar(c, l, ch, attributes); |
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119 } |
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120 @Override |
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121 public void insertLine(int l, int n, boolean scrollDown) { |
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122 if (bridge.monitor != null) { |
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123 if (scrollDown) bridge.monitor.screenChanged(l, height - 1, 0, width - 1); |
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124 else bridge.monitor.screenChanged(0, l, 0, width - 1); |
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125 } |
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126 |
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127 super.insertLine(l, n, scrollDown); |
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128 } |
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129 @Override |
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130 public void deleteLine(int l) { |
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131 if (bridge.monitor != null) bridge.monitor.screenChanged(l, height - 1, 0, width - 1); |
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132 |
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133 super.deleteLine(l); |
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134 } |
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135 @Override |
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136 public void deleteChar(int c, int l) { |
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137 if (bridge.monitor != null) bridge.monitor.screenChanged(l, l, c, width - 1); |
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138 |
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139 super.deleteChar(c, l); |
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140 } |
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141 @Override |
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142 public void setCursorPosition(int c, int l) { |
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143 if (bridge.monitor != null) bridge.monitor.cursorMove(l, c); |
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144 |
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145 super.setCursorPosition(c, l); |
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146 } |
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147 |
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148 }; |
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149 |
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150 |
| 0 | 151 public AbsTransport() {} |
| 152 | |
| 153 /** | |
| 154 * @return protocol part of the URI | |
| 155 */ | |
| 156 public static String getProtocolName() { | |
| 157 return "unknown"; | |
| 158 } | |
| 159 | |
| 160 /** | |
| 161 * Encode the current transport into a URI that can be passed via intent calls. | |
| 162 * @return URI to host | |
| 163 */ | |
| 11 | 164 public abstract Uri getUri(String input); |
| 165 | |
| 0 | 166 |
| 167 /** | |
| 168 * Causes transport to connect to the target host. After connecting but before a | |
| 169 * session is started, must call back to {@link TerminalBridge#onConnected()}. | |
| 170 * After that call a session may be opened. | |
| 171 */ | |
| 172 public abstract void connect(); | |
| 173 | |
| 174 /** | |
| 175 * Checks if read() will block. If there are no bytes remaining in | |
| 176 * the underlying transport, return true. | |
| 177 */ | |
| 178 public abstract boolean willBlock(); | |
| 179 | |
| 180 /** | |
| 181 * Reads from the transport. Transport must support reading into a byte array | |
| 182 * <code>buffer</code> at the start of <code>offset</code> and a maximum of | |
| 183 * <code>length</code> bytes. If the remote host disconnects, throw an | |
| 184 * {@link IOException}. | |
| 185 * @param buffer byte buffer to store read bytes into | |
| 186 * @param offset where to start writing in the buffer | |
| 187 * @param length maximum number of bytes to read | |
| 188 * @return number of bytes read | |
| 189 * @throws IOException when remote host disconnects | |
| 190 */ | |
| 191 public abstract int read(byte[] buffer, int offset, int length) throws IOException; | |
| 192 | |
| 193 /** | |
| 194 * Writes to the transport. If the host is not yet connected, simply return without | |
| 195 * doing anything. An {@link IOException} should be thrown if there is an error after | |
| 196 * connection. | |
| 197 * @param buffer bytes to write to transport | |
| 198 * @throws IOException when there is a problem writing after connection | |
| 199 */ | |
| 200 public abstract void write(byte[] buffer) throws IOException; | |
| 201 | |
| 202 /** | |
| 203 * Writes to the transport. See {@link #write(byte[])} for behavior details. | |
| 204 * @param c character to write to the transport | |
| 205 * @throws IOException when there is a problem writing after connection | |
| 206 */ | |
| 207 public abstract void write(int c) throws IOException; | |
| 208 | |
| 209 /** | |
| 210 * Flushes the write commands to the transport. | |
| 211 * @throws IOException when there is a problem writing after connection | |
| 212 */ | |
| 213 public abstract void flush() throws IOException; | |
| 214 | |
| 215 /** | |
| 216 * Closes the connection to the terminal. Note that the resulting failure to read | |
| 217 * should call {@link TerminalBridge#dispatchDisconnect(boolean)}. | |
| 218 */ | |
| 219 public abstract void close(); | |
| 220 | |
| 221 /** | |
| 222 * Tells the transport what dimensions the display is currently | |
| 223 * @param columns columns of text | |
| 224 * @param rows rows of text | |
| 225 * @param width width in pixels | |
| 226 * @param height height in pixels | |
| 227 */ | |
| 228 public abstract void setDimensions(int columns, int rows, int width, int height); | |
| 229 | |
| 230 public void setOptions(Map<String, String> options) { | |
| 231 // do nothing | |
| 232 } | |
| 233 | |
| 234 public Map<String, String> getOptions() { | |
| 235 return null; | |
| 236 } | |
| 237 | |
| 238 public void setCompression(boolean compression) { | |
| 239 // do nothing | |
| 240 } | |
| 241 | |
| 242 public void setHttpproxy(String httpproxy) { | |
| 243 // do nothing | |
| 244 } | |
| 245 | |
| 246 public void setUseAuthAgent(String useAuthAgent) { | |
| 247 // do nothing | |
| 248 } | |
| 249 | |
| 250 public String getEmulation() { | |
| 251 return emulation; | |
| 252 } | |
| 253 | |
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254 protected vt320 setupTransportBuffer() { |
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255 int scrollback = (host.getWantSession()) ? manager.getScrollback() : 0; |
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256 buffer.setBufferSize(scrollback); |
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257 buffer.setDisplay(bridge); |
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258 return buffer; |
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259 } |
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260 |
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261 public vt320 getTransportBuffer() { |
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262 buffer = new vt320Default(); |
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263 return setupTransportBuffer(); |
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264 } |
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265 |
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266 public void setLinks(TerminalManager manager, TerminalBridge bridge, String homeDirectory, HostBean host, String emulation) { |
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267 this.manager = manager; |
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268 this.bridge = bridge; |
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269 this.homeDirectory = homeDirectory; |
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270 this.host = host; |
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271 this.emulation = emulation; |
| 0 | 272 } |
| 273 | |
| 274 /** | |
| 275 * Whether or not this transport type can forward ports. | |
| 276 * @return true on ability to forward ports | |
| 277 */ | |
| 278 public boolean canForwardPorts() { | |
| 279 return false; | |
| 280 } | |
| 281 | |
| 282 /** | |
| 283 * Adds the {@link PortForwardBean} to the list. | |
| 284 * @param portForward the port forward bean to add | |
| 285 * @return true on successful addition | |
| 286 */ | |
| 287 public boolean addPortForward(PortForwardBean portForward) { | |
| 288 return false; | |
| 289 } | |
| 290 | |
| 291 /** | |
| 292 * Enables a port forward member. After calling this method, the port forward should | |
| 293 * be operational iff it could be enabled by the transport. | |
| 294 * @param portForward member of our current port forwards list to enable | |
| 295 * @return true on successful port forward setup | |
| 296 */ | |
| 297 public boolean enablePortForward(PortForwardBean portForward) { | |
| 298 return false; | |
| 299 } | |
| 300 | |
| 301 /** | |
| 302 * Disables a port forward member. After calling this method, the port forward should | |
| 303 * be non-functioning iff it could be disabled by the transport. | |
| 304 * @param portForward member of our current port forwards list to enable | |
| 305 * @return true on successful port forward tear-down | |
| 306 */ | |
| 307 public boolean disablePortForward(PortForwardBean portForward) { | |
| 308 return false; | |
| 309 } | |
| 310 | |
| 311 /** | |
| 312 * Removes the {@link PortForwardBean} from the available port forwards. | |
| 313 * @param portForward the port forward bean to remove | |
| 314 * @return true on successful removal | |
| 315 */ | |
| 316 public boolean removePortForward(PortForwardBean portForward) { | |
| 317 return false; | |
| 318 } | |
| 319 | |
| 320 /** | |
| 321 * Gets a list of the {@link PortForwardBean} currently used by this transport. | |
| 322 * @return the list of port forwards | |
| 323 */ | |
| 324 public List<PortForwardBean> getPortForwards() { | |
| 325 return null; | |
| 326 } | |
| 327 | |
| 328 /** | |
| 329 * Whether or not this transport type can transfer files. | |
| 330 * @return true on ability to transfer files | |
| 331 */ | |
| 332 public boolean canTransferFiles() { | |
| 333 return false; | |
| 334 } | |
| 335 | |
| 336 /** | |
| 337 * Downloads the specified remote file to a local folder. | |
| 338 * @param remoteFile The path to the remote file to be downloaded. Must be non-null. | |
| 339 * @param localFolder The path to local folder. Null = default external storage folder. | |
| 340 * @return true on success, false on failure | |
| 341 */ | |
| 342 public boolean downloadFile(String remoteFile, String localFolder) { | |
| 343 return false; | |
| 344 } | |
| 345 | |
| 346 /** | |
| 347 * Uploads the specified local file to the remote host. | |
| 348 * @param localFile The path to the local file to be uploaded. Must be non-null. | |
| 349 * @param remoteFolder The path to the remote directory. Null == default remote directory. | |
| 350 * @return true on success, false on failure | |
| 351 */ | |
| 352 public boolean uploadFile(String localFile, String remoteFile, | |
| 353 String remoteFolder, String mode) { | |
| 354 return false; | |
| 355 } | |
| 356 | |
| 357 | |
| 358 /** | |
| 359 * @return int default port for protocol | |
| 360 */ | |
| 361 public abstract int getDefaultPort(); | |
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362 public abstract boolean isConnected(); |
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363 public abstract boolean isSessionOpen(); |
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364 public abstract boolean isAuthenticated(); |
| 0 | 365 |
| 366 /** | |
| 367 * @param username | |
| 368 * @param hostname | |
| 369 * @param port | |
| 370 * @return | |
| 371 */ | |
| 372 public abstract String getDefaultNickname(String username, String hostname, int port); | |
| 373 | |
| 374 /** | |
| 375 * @param uri | |
| 376 * @param selectionKeys | |
| 377 * @param selectionValues | |
| 378 */ | |
| 379 public abstract void getSelectionArgs(Uri uri, Map<String, String> selection); | |
| 380 | |
| 381 /** | |
| 382 * @param uri | |
| 383 * @return | |
| 384 */ | |
| 385 public abstract HostBean createHost(Uri uri); | |
| 386 | |
| 387 /** | |
| 388 * @param context context containing the correct resources | |
| 389 * @return string that hints at the format for connection | |
| 390 */ | |
| 11 | 391 public abstract String getFormatHint(Context context); |
| 0 | 392 |
| 393 /** | |
|
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394 * @return do we use the network |
| 0 | 395 */ |
| 396 public abstract boolean usesNetwork(); | |
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397 |
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398 /** |
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399 * @return do we need a relay object to read from the transport |
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400 * and send the data into the vt320 buffer |
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401 */ |
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402 public boolean needsRelay() { |
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403 return true; |
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404 } |
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405 |
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406 /** |
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407 * @return a key listener |
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408 */ |
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409 public TerminalKeyListener getTerminalKeyListener() { |
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410 return new TerminalKeyListener(manager, bridge, buffer, host.getEncoding()); |
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411 } |
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412 |
| 0 | 413 } |