Mercurial > 510Connectbot
annotate app/src/main/java/com/five_ten_sg/connectbot/transport/AbsTransport.java @ 514:947ea334735d default tip
update copyrights
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Fri, 10 Feb 2023 19:13:58 -0700 |
| parents | f698820bffdf |
| children |
| rev | line source |
|---|---|
| 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 // monitor simulating function key depress |
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59 //@Override |
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60 //public void keyDepressed(int keyCode) { |
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61 // implementation in the base vt320 |
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62 |
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63 // monitor simulating ascii key depress |
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64 //@Override |
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65 //public void keyUnicodeDepressed(int keyCode) { |
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66 // implementation in the base vt320 |
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67 |
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68 // terminal key listener found special key, send notification to monitor |
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69 @Override |
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70 public void monitorKey(boolean down) { |
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71 if (bridge.monitor != null) bridge.monitor.keyState(down); |
| 100 | 72 } |
| 73 | |
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74 // terminal key listener sending to the host |
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75 @Override |
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76 public void write(byte[] b) { |
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77 try { |
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78 AbsTransport.this.write(b); |
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79 } |
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80 catch (IOException e) { |
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81 Log.e(TAG, "Problem writing outgoing data in vt320() thread", e); |
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82 } |
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83 } |
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84 @Override |
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85 public void write(int b) { |
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86 try { |
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87 AbsTransport.this.write(b); |
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88 } |
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89 catch (IOException e) { |
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90 Log.e(TAG, "Problem writing outgoing data in vt320() thread", e); |
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91 } |
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92 } |
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93 |
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94 // We don't use telnet sequences. |
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95 @Override |
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96 public void sendTelnetCommand(byte cmd) { |
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97 } |
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98 // We don't want remote to resize our window. |
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99 @Override |
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100 public void setWindowSize(int c, int r) { |
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101 } |
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102 // play beep noise |
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103 @Override |
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104 public void beep() { |
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105 if ((bridge.parent != null) && (bridge.parent.isShown())) |
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106 manager.playBeep(); |
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107 else |
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108 manager.sendActivityNotification(host); |
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109 } |
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110 |
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111 // test for changed screen contents |
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112 @Override |
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113 public void testChanged() { |
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114 if (bridge.monitor != null) bridge.monitor.testChanged(); |
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115 } |
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116 // relay socket writing to the screen |
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117 // bridge.monitor placement of new characters |
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118 @Override |
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119 public void putChar(int c, int l, char ch, int attributes) { |
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120 if (bridge.monitor != null) bridge.monitor.screenChanged(l, c); |
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121 |
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122 super.putChar(c, l, ch, attributes); |
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123 } |
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124 @Override |
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125 public void insertChar(int c, int l, char ch, int attributes) { |
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126 if (bridge.monitor != null) bridge.monitor.screenChanged(l, l, c, width - 1); |
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127 |
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128 super.insertChar(c, l, ch, attributes); |
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129 } |
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130 @Override |
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131 public void insertLine(int l, int n, boolean scrollDown) { |
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132 if (bridge.monitor != null) { |
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133 if (scrollDown) bridge.monitor.screenChanged(l, height - 1, 0, width - 1); |
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134 else bridge.monitor.screenChanged(0, l, 0, width - 1); |
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135 } |
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136 |
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137 super.insertLine(l, n, scrollDown); |
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138 } |
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139 @Override |
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140 public void deleteLine(int l) { |
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141 if (bridge.monitor != null) bridge.monitor.screenChanged(l, height - 1, 0, width - 1); |
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142 |
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143 super.deleteLine(l); |
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144 } |
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145 @Override |
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146 public void deleteChar(int c, int l) { |
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147 if (bridge.monitor != null) bridge.monitor.screenChanged(l, l, c, width - 1); |
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148 |
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149 super.deleteChar(c, l); |
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150 } |
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151 @Override |
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152 public void setCursorPosition(int c, int l) { |
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153 if (bridge.monitor != null) bridge.monitor.cursorMove(l, c); |
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154 |
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155 super.setCursorPosition(c, l); |
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156 } |
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157 |
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158 }; |
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159 |
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160 |
| 0 | 161 public AbsTransport() {} |
| 162 | |
| 163 /** | |
| 164 * @return protocol part of the URI | |
| 165 */ | |
| 166 public static String getProtocolName() { | |
| 167 return "unknown"; | |
| 168 } | |
| 169 | |
| 170 /** | |
| 171 * Encode the current transport into a URI that can be passed via intent calls. | |
| 172 * @return URI to host | |
| 173 */ | |
| 11 | 174 public abstract Uri getUri(String input); |
| 175 | |
| 0 | 176 |
| 177 /** | |
| 178 * Causes transport to connect to the target host. After connecting but before a | |
| 179 * session is started, must call back to {@link TerminalBridge#onConnected()}. | |
| 180 * After that call a session may be opened. | |
| 181 */ | |
| 182 public abstract void connect(); | |
| 183 | |
| 184 /** | |
| 185 * Checks if read() will block. If there are no bytes remaining in | |
| 186 * the underlying transport, return true. | |
| 187 */ | |
| 188 public abstract boolean willBlock(); | |
| 189 | |
| 190 /** | |
| 191 * Reads from the transport. Transport must support reading into a byte array | |
| 192 * <code>buffer</code> at the start of <code>offset</code> and a maximum of | |
| 193 * <code>length</code> bytes. If the remote host disconnects, throw an | |
| 194 * {@link IOException}. | |
| 195 * @param buffer byte buffer to store read bytes into | |
| 196 * @param offset where to start writing in the buffer | |
| 197 * @param length maximum number of bytes to read | |
| 198 * @return number of bytes read | |
| 199 * @throws IOException when remote host disconnects | |
| 200 */ | |
| 201 public abstract int read(byte[] buffer, int offset, int length) throws IOException; | |
| 202 | |
| 203 /** | |
| 204 * Writes to the transport. If the host is not yet connected, simply return without | |
| 205 * doing anything. An {@link IOException} should be thrown if there is an error after | |
| 206 * connection. | |
| 207 * @param buffer bytes to write to transport | |
| 208 * @throws IOException when there is a problem writing after connection | |
| 209 */ | |
| 210 public abstract void write(byte[] buffer) throws IOException; | |
| 211 | |
| 212 /** | |
| 213 * Writes to the transport. See {@link #write(byte[])} for behavior details. | |
| 214 * @param c character to write to the transport | |
| 215 * @throws IOException when there is a problem writing after connection | |
| 216 */ | |
| 217 public abstract void write(int c) throws IOException; | |
| 218 | |
| 219 /** | |
| 220 * Flushes the write commands to the transport. | |
| 221 * @throws IOException when there is a problem writing after connection | |
| 222 */ | |
| 223 public abstract void flush() throws IOException; | |
| 224 | |
| 225 /** | |
| 226 * Closes the connection to the terminal. Note that the resulting failure to read | |
| 227 * should call {@link TerminalBridge#dispatchDisconnect(boolean)}. | |
| 228 */ | |
| 229 public abstract void close(); | |
| 230 | |
| 231 /** | |
| 232 * Tells the transport what dimensions the display is currently | |
| 233 * @param columns columns of text | |
| 234 * @param rows rows of text | |
| 235 * @param width width in pixels | |
| 236 * @param height height in pixels | |
| 237 */ | |
| 238 public abstract void setDimensions(int columns, int rows, int width, int height); | |
| 239 | |
| 240 public void setOptions(Map<String, String> options) { | |
| 241 // do nothing | |
| 242 } | |
| 243 | |
| 244 public Map<String, String> getOptions() { | |
| 245 return null; | |
| 246 } | |
| 247 | |
| 248 public void setCompression(boolean compression) { | |
| 249 // do nothing | |
| 250 } | |
| 251 | |
| 252 public void setHttpproxy(String httpproxy) { | |
| 253 // do nothing | |
| 254 } | |
| 255 | |
| 256 public void setUseAuthAgent(String useAuthAgent) { | |
| 257 // do nothing | |
| 258 } | |
| 259 | |
| 260 public String getEmulation() { | |
| 261 return emulation; | |
| 262 } | |
| 263 | |
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264 protected vt320 setupTransportBuffer() { |
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265 int scrollback = (host.getWantSession()) ? manager.getScrollback() : 0; |
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266 buffer.setBufferSize(scrollback); |
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267 buffer.setDisplay(bridge); |
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268 return buffer; |
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269 } |
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270 |
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271 public vt320 getTransportBuffer() { |
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272 buffer = new vt320Default(); |
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273 return setupTransportBuffer(); |
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274 } |
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275 |
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276 public void setLinks(TerminalManager manager, TerminalBridge bridge, String homeDirectory, HostBean host, String emulation) { |
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277 this.manager = manager; |
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278 this.bridge = bridge; |
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279 this.homeDirectory = homeDirectory; |
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280 this.host = host; |
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281 this.emulation = emulation; |
| 0 | 282 } |
| 283 | |
| 284 /** | |
| 285 * Whether or not this transport type can forward ports. | |
| 286 * @return true on ability to forward ports | |
| 287 */ | |
| 288 public boolean canForwardPorts() { | |
| 289 return false; | |
| 290 } | |
| 291 | |
| 292 /** | |
| 293 * Adds the {@link PortForwardBean} to the list. | |
| 294 * @param portForward the port forward bean to add | |
| 295 * @return true on successful addition | |
| 296 */ | |
| 297 public boolean addPortForward(PortForwardBean portForward) { | |
| 298 return false; | |
| 299 } | |
| 300 | |
| 301 /** | |
| 302 * Enables a port forward member. After calling this method, the port forward should | |
| 303 * be operational iff it could be enabled by the transport. | |
| 304 * @param portForward member of our current port forwards list to enable | |
| 305 * @return true on successful port forward setup | |
| 306 */ | |
| 307 public boolean enablePortForward(PortForwardBean portForward) { | |
| 308 return false; | |
| 309 } | |
| 310 | |
| 311 /** | |
| 312 * Disables a port forward member. After calling this method, the port forward should | |
| 313 * be non-functioning iff it could be disabled by the transport. | |
| 314 * @param portForward member of our current port forwards list to enable | |
| 315 * @return true on successful port forward tear-down | |
| 316 */ | |
| 317 public boolean disablePortForward(PortForwardBean portForward) { | |
| 318 return false; | |
| 319 } | |
| 320 | |
| 321 /** | |
| 322 * Removes the {@link PortForwardBean} from the available port forwards. | |
| 323 * @param portForward the port forward bean to remove | |
| 324 * @return true on successful removal | |
| 325 */ | |
| 326 public boolean removePortForward(PortForwardBean portForward) { | |
| 327 return false; | |
| 328 } | |
| 329 | |
| 330 /** | |
| 331 * Gets a list of the {@link PortForwardBean} currently used by this transport. | |
| 332 * @return the list of port forwards | |
| 333 */ | |
| 334 public List<PortForwardBean> getPortForwards() { | |
| 335 return null; | |
| 336 } | |
| 337 | |
| 338 /** | |
| 339 * Whether or not this transport type can transfer files. | |
| 340 * @return true on ability to transfer files | |
| 341 */ | |
| 342 public boolean canTransferFiles() { | |
| 343 return false; | |
| 344 } | |
| 345 | |
| 346 /** | |
| 347 * Downloads the specified remote file to a local folder. | |
| 348 * @param remoteFile The path to the remote file to be downloaded. Must be non-null. | |
| 349 * @param localFolder The path to local folder. Null = default external storage folder. | |
| 350 * @return true on success, false on failure | |
| 351 */ | |
| 352 public boolean downloadFile(String remoteFile, String localFolder) { | |
| 353 return false; | |
| 354 } | |
| 355 | |
| 356 /** | |
| 357 * Uploads the specified local file to the remote host. | |
| 358 * @param localFile The path to the local file to be uploaded. Must be non-null. | |
| 359 * @param remoteFolder The path to the remote directory. Null == default remote directory. | |
| 360 * @return true on success, false on failure | |
| 361 */ | |
| 362 public boolean uploadFile(String localFile, String remoteFile, | |
| 363 String remoteFolder, String mode) { | |
| 364 return false; | |
| 365 } | |
| 366 | |
| 367 | |
| 368 /** | |
| 369 * @return int default port for protocol | |
| 370 */ | |
| 371 public abstract int getDefaultPort(); | |
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372 public abstract boolean isConnected(); |
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373 public abstract boolean isSessionOpen(); |
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374 public abstract boolean isAuthenticated(); |
| 0 | 375 |
| 376 /** | |
| 377 * @param username | |
| 378 * @param hostname | |
| 379 * @param port | |
| 380 * @return | |
| 381 */ | |
| 382 public abstract String getDefaultNickname(String username, String hostname, int port); | |
| 383 | |
| 384 /** | |
| 385 * @param uri | |
| 386 * @param selectionKeys | |
| 387 * @param selectionValues | |
| 388 */ | |
| 389 public abstract void getSelectionArgs(Uri uri, Map<String, String> selection); | |
| 390 | |
| 391 /** | |
| 392 * @param uri | |
| 393 * @return | |
| 394 */ | |
| 395 public abstract HostBean createHost(Uri uri); | |
| 396 | |
| 397 /** | |
| 398 * @param context context containing the correct resources | |
| 399 * @return string that hints at the format for connection | |
| 400 */ | |
| 11 | 401 public abstract String getFormatHint(Context context); |
| 0 | 402 |
| 403 /** | |
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404 * @return do we use the network |
| 0 | 405 */ |
| 406 public abstract boolean usesNetwork(); | |
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407 |
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408 /** |
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409 * @return do we need a relay object to read from the transport |
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410 * and send the data into the vt320 buffer |
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411 */ |
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412 public boolean needsRelay() { |
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413 return true; |
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414 } |
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415 |
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416 /** |
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417 * @return a key listener |
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418 */ |
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419 public TerminalKeyListener getTerminalKeyListener() { |
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420 return new TerminalKeyListener(manager, bridge, buffer, host.getEncoding()); |
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421 } |
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422 |
| 0 | 423 } |