Mercurial > 510Connectbot
annotate src/com/five_ten_sg/connectbot/service/TerminalMonitor.java @ 397:2f2b5a244a4d
add queue to buffer monitor socket writes to prevent blocking on socket output stream write
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Wed, 15 Oct 2014 17:55:59 -0700 |
| parents | 071eccdff8ea |
| children | 2a416391ffc3 |
| rev | line source |
|---|---|
| 0 | 1 package com.five_ten_sg.connectbot.service; |
| 2 | |
| 3 import android.content.ComponentName; | |
| 4 import android.content.Context; | |
| 5 import android.content.Intent; | |
| 6 import android.content.ServiceConnection; | |
| 155 | 7 import android.net.Uri; |
| 0 | 8 import android.os.IBinder; |
| 9 import android.util.Log; | |
| 10 import android.view.View; | |
| 11 import de.mud.terminal.vt320; | |
| 12 import java.io.IOException; | |
| 13 import java.io.InputStream; | |
| 14 import java.io.OutputStream; | |
| 15 import java.net.InetAddress; | |
| 16 import java.net.Socket; | |
| 17 import java.nio.charset.Charset; | |
|
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18 import java.util.Arrays; |
| 0 | 19 import java.util.HashMap; |
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20 import java.util.concurrent.ArrayBlockingQueue; |
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21 import java.util.concurrent.BlockingQueue; |
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22 import java.util.concurrent.ConcurrentHashMap; |
| 0 | 23 |
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24 import com.five_ten_sg.connectbot.ConsoleActivity; |
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25 import com.five_ten_sg.connectbot.bean.HostBean; |
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26 |
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27 |
| 0 | 28 public class TerminalMonitor { |
| 29 public final static String TAG = "ConnectBot.TerminalMonitor"; | |
| 30 | |
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31 public static final char MONITOR_CMD_INIT = 0; |
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32 public static final char MONITOR_CMD_ACTIVATE = 1; |
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33 public static final char MONITOR_CMD_KEYSTATE = 2; |
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34 public static final char MONITOR_CMD_CURSORMOVE = 3; |
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35 public static final char MONITOR_CMD_SCREENCHANGE = 4; |
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36 public static final char MONITOR_CMD_FIELDVALUE = 5; |
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37 public static final char MONITOR_CMD_SETFIELD = 5; |
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38 public static final char MONITOR_CMD_GETFIELD = 6; |
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39 public static final char MONITOR_CMD_SCREENWATCH = 7; |
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40 public static final char MONITOR_CMD_DEPRESS = 8; |
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41 public static final char MONITOR_CMD_SHOWURL = 9; |
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42 public static final char MONITOR_CMD_SWITCHSESSION = 10; |
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43 public static final char MONITOR_CMD_CURSORREQUEST = 11; |
| 0 | 44 |
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45 public static final char CURSOR_REQUESTED = 0; |
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46 public static final char CURSOR_SCREEN_CHANGE = 1; |
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47 public static final char CURSOR_USER_KEY = 2; |
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48 |
| 0 | 49 private static final int MONITORPORT = 6000; |
| 50 private static final String LOCALHOST = "127.0.0.1"; | |
| 51 | |
| 52 private Context parent = null; | |
| 53 private vt320 buffer = null; | |
| 54 private View view = null; | |
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55 private HostBean host = null; |
| 0 | 56 private String init = null; |
| 57 private int start_line = 0; // monitor part of the screen for changes | |
| 58 private int end_line = 500; // "" | |
| 59 private int start_column = 0; // "" | |
| 60 private int end_column = 500; // "" | |
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61 private boolean modified = false; // used to delay screen change notifications |
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62 private boolean moved = false; // used to delay cursor moved notifications |
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63 private int to_line = 0; // "" |
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64 private int to_column = 0; // "" |
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65 private HashMap<Integer, Integer> keymap = null; // map MS VK_ keys to vt320 virtual keys |
| 0 | 66 private IBinder bound = null; |
| 67 private Socket monitor_socket = null; | |
| 68 private InputStream monitor_in = null; | |
| 69 private OutputStream monitor_out = null; | |
| 70 private MyReader monitor_reader = null; | |
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71 private MyWriter monitor_writer = null; |
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72 private BlockingQueue<char[]> pending_commands = new ArrayBlockingQueue<char[]>(10000); |
| 0 | 73 private MyServiceConnection monitor_connection = new MyServiceConnection(); |
| 74 | |
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75 class MyWriter extends Thread { |
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76 private OutputStream monitor_out; |
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77 private boolean is_closing = false; |
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78 |
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79 public MyWriter(OutputStream monitor_out) { |
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80 this.monitor_out = monitor_out; |
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81 } |
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82 |
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83 public void closing() { |
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84 is_closing = true; |
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85 this.interrupt(); |
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86 } |
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87 |
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88 public void run() { |
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89 char [] c; |
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90 try { |
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91 while (!is_closing) { |
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92 c = pending_commands.take(); |
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93 c[0] = (char)(c.length - 1); // number of chars following |
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94 c[1] = cmd; |
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95 //Log.i(TAG, String.format("sending %d command", (int)cmd)); |
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96 monitor_out.write(charsToBytes(c)); |
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97 } |
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98 } |
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99 catch (InterruptedException e) { |
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100 if (!is_closing) Log.e(TAG, "exception in monitorWrite()", e); |
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101 } |
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102 catch (IOException e) { |
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103 Log.i(TAG, "exception in monitorWrite(), monitor died or closed the socket", e); |
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104 } |
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105 |
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106 try { |
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107 monitor_out.close(); |
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108 } |
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109 catch (IOException ee) { |
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110 Log.e(TAG, "exception in monitorWrite() closing output stream", ee); |
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111 } |
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112 monitor_out = null; |
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113 } |
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114 } |
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115 |
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116 |
| 0 | 117 class MyReader extends Thread { |
| 118 private InputStream monitor_in; | |
| 119 private byte[] b; | |
| 120 private boolean is_closing = false; | |
| 121 | |
| 122 public MyReader(InputStream monitor_in) { | |
| 123 this.monitor_in = monitor_in; | |
| 124 b = new byte[100]; | |
| 125 Log.i(TAG, "MyReader constructor"); | |
| 126 } | |
| 127 | |
| 128 public void closing() { | |
| 129 is_closing = true; | |
| 130 } | |
| 131 | |
| 132 private char[] forceRead(int len) throws IOException { | |
| 133 int len2 = len * 2; | |
| 134 int off = 0; | |
| 135 | |
| 136 if (b.length < len2) b = new byte[len2]; | |
| 137 | |
| 138 while (off < len2) { | |
| 139 int l = monitor_in.read(b, off, len2 - off); | |
| 140 | |
| 141 if (l < 0) throw new IOException("eof"); | |
| 142 | |
| 143 off += l; | |
| 144 } | |
| 145 | |
| 146 return bytesToChars(b, len2); | |
| 147 } | |
| 148 | |
| 149 public void run() { | |
| 150 while (true) { | |
| 151 try { | |
| 152 char[] len = forceRead(1); | |
| 153 char[] packet = forceRead(len[0]); | |
| 154 char cmd = packet[0]; | |
| 155 Log.i(TAG, String.format("received %d command", (int)cmd)); | |
| 156 | |
| 157 switch (cmd) { | |
| 158 case MONITOR_CMD_SETFIELD: | |
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159 if (packet.length >= 3) |
| 0 | 160 setField(packet[1], packet[2], packet, 3); |
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161 |
| 0 | 162 break; |
| 163 | |
| 164 case MONITOR_CMD_GETFIELD: | |
| 165 if (packet.length == 4) | |
| 166 getField(packet[1], packet[2], packet[3]); | |
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167 |
| 0 | 168 break; |
| 169 | |
| 170 case MONITOR_CMD_SCREENWATCH: | |
| 171 if (packet.length == 4) | |
| 172 screenWatch(packet[1], packet[2], packet[3]); | |
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173 |
| 0 | 174 break; |
| 175 | |
| 176 case MONITOR_CMD_DEPRESS: | |
| 177 if (packet.length == 2) | |
| 178 depress(packet[1]); | |
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179 |
| 0 | 180 break; |
| 181 | |
| 155 | 182 case MONITOR_CMD_SHOWURL: |
| 183 if (packet.length > 1) | |
| 184 showUrl(packet, 1); | |
| 185 | |
| 186 break; | |
| 187 | |
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188 case MONITOR_CMD_SWITCHSESSION: |
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189 if (packet.length == 1) |
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190 switchSession(); |
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191 |
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192 break; |
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193 |
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194 case MONITOR_CMD_CURSORREQUEST: |
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195 if (packet.length == 1) |
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196 cursorRequest(); |
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197 |
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198 break; |
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199 |
| 0 | 200 default: |
| 201 break; | |
| 202 } | |
| 203 } | |
| 204 catch (IOException e) { | |
| 205 if (!is_closing) Log.e(TAG, "exception in MyReader.run()", e); | |
| 206 | |
| 207 break; | |
| 208 } | |
| 209 } | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 class MyServiceConnection implements ServiceConnection { | |
| 214 public void onServiceConnected(ComponentName className, IBinder service) { | |
| 215 bound = service; | |
| 216 Log.i(TAG, "bound to service"); | |
| 217 | |
| 218 try { | |
| 219 InetAddress serverAddr = InetAddress.getByName(LOCALHOST); | |
| 220 monitor_socket = new Socket(serverAddr, MONITORPORT); | |
| 221 monitor_in = monitor_socket.getInputStream(); | |
| 222 monitor_out = monitor_socket.getOutputStream(); | |
| 223 Log.i(TAG, "connected to monitor socket, send init " + init); | |
| 224 monitor_reader = new MyReader(monitor_in); | |
| 225 monitor_reader.start(); | |
|
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226 monitor_writer = new MyWriter(monitor_out); |
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227 monitor_writer.start(); |
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228 |
| 0 | 229 String x = " " + init; |
| 230 monitorWrite(MONITOR_CMD_INIT, x.toCharArray()); | |
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231 |
| 0 | 232 } |
| 233 catch (IOException e) { | |
| 234 Log.e(TAG, "exception in onServiceConnected()", e); | |
| 235 } | |
| 236 } | |
| 237 public void onServiceDisconnected(ComponentName classNam) { | |
| 238 bound = null; | |
| 239 Log.i(TAG, "unbound from service"); | |
| 240 } | |
| 241 }; | |
| 242 | |
| 243 | |
|
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244 public TerminalMonitor(Context parent, vt320 buffer, View view, HostBean host, String init) { |
| 0 | 245 this.parent = parent; |
| 246 this.buffer = buffer; | |
| 247 this.view = view; | |
|
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248 this.host = host; |
| 0 | 249 this.init = init; |
| 250 // setup the windows->android keymapping | |
|
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251 // http://msdn.microsoft.com/en-us/library/windows/desktop/dd375731 |
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252 keymap = new HashMap<Integer, Integer>(); |
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253 keymap.put(0x08, vt320.KEY_BACK_SPACE); // vk_back |
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254 keymap.put(0x09, vt320.KEY_TAB); // vk_tab |
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255 keymap.put(0x0d, vt320.KEY_ENTER); // vk_return |
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256 keymap.put(0x1b, vt320.KEY_ESCAPE); // vk_escape |
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257 keymap.put(0x21, vt320.KEY_PAGE_UP); // vk_prior |
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258 keymap.put(0x22, vt320.KEY_PAGE_DOWN); // vk_next |
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259 keymap.put(0x23, vt320.KEY_END); // vk_end |
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260 keymap.put(0x24, vt320.KEY_HOME); // vk_home |
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261 keymap.put(0x25, vt320.KEY_LEFT); // vk_left |
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262 keymap.put(0x26, vt320.KEY_UP); // vk_up |
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263 keymap.put(0x27, vt320.KEY_RIGHT); // vk_right |
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264 keymap.put(0x28, vt320.KEY_DOWN); // vk_down |
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265 keymap.put(0x2d, vt320.KEY_INSERT); // vk_insert |
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266 keymap.put(0x2e, vt320.KEY_DELETE); // vk_delete |
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267 keymap.put(0x70, vt320.KEY_F1); // vk_f1 |
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268 keymap.put(0x71, vt320.KEY_F2); // vk_f2 |
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269 keymap.put(0x72, vt320.KEY_F3); // vk_f3 |
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270 keymap.put(0x73, vt320.KEY_F4); // vk_f4 |
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271 keymap.put(0x74, vt320.KEY_F5); // vk_f5 |
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272 keymap.put(0x75, vt320.KEY_F6); // vk_f6 |
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273 keymap.put(0x76, vt320.KEY_F7); // vk_f7 |
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274 keymap.put(0x77, vt320.KEY_F8); // vk_f8 |
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275 keymap.put(0x78, vt320.KEY_F9); // vk_f9 |
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276 keymap.put(0x79, vt320.KEY_F10); // vk_f10 |
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277 keymap.put(0x7a, vt320.KEY_F11); // vk_f11 |
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278 keymap.put(0x7b, vt320.KEY_F12); // vk_f12 |
| 176 | 279 keymap.put(0x7c, vt320.KEY_F13); // vk_f13 |
| 280 keymap.put(0x7d, vt320.KEY_F14); // vk_f14 | |
| 281 keymap.put(0x7e, vt320.KEY_F15); // vk_f15 | |
| 282 keymap.put(0x7f, vt320.KEY_F16); // vk_f16 | |
| 283 keymap.put(0x80, vt320.KEY_F17); // vk_f17 | |
| 284 keymap.put(0x81, vt320.KEY_F18); // vk_f18 | |
| 285 keymap.put(0x82, vt320.KEY_F19); // vk_f19 | |
| 286 keymap.put(0x83, vt320.KEY_F20); // vk_f20 | |
| 287 keymap.put(0x84, vt320.KEY_F21); // vk_f21 | |
| 288 keymap.put(0x85, vt320.KEY_F22); // vk_f22 | |
| 289 keymap.put(0x86, vt320.KEY_F23); // vk_f23 | |
| 290 keymap.put(0x87, vt320.KEY_F24); // vk_f24 | |
| 0 | 291 // bind to the monitor service |
| 292 Intent intent = new Intent("com.five_ten_sg.connectbot.monitor.MonitorService"); | |
| 293 parent.bindService(intent, monitor_connection, Context.BIND_AUTO_CREATE); | |
| 294 Log.i(TAG, "constructor"); | |
| 295 } | |
| 296 | |
| 297 | |
| 298 public void Disconnect() { | |
| 299 if (monitor_reader != null) monitor_reader.closing(); | |
|
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300 if (monitor_writer != null) monitor_writer.closing(); |
| 0 | 301 try { |
| 302 if (monitor_out != null) monitor_out.close(); | |
| 303 | |
| 304 if (monitor_in != null) monitor_in.close(); | |
| 305 | |
| 306 if (monitor_socket != null) monitor_socket.close(); | |
| 307 | |
| 308 Log.i(TAG, "disconnected from monitor socket"); | |
| 309 } | |
| 310 catch (IOException e) { | |
| 311 Log.e(TAG, "exception in Disconnect() closing sockets", e); | |
| 312 } | |
| 313 | |
| 314 monitor_reader = null; | |
| 315 monitor_out = null; | |
| 316 monitor_in = null; | |
| 317 monitor_socket = null; | |
| 318 | |
| 319 if (bound != null) parent.unbindService(monitor_connection); | |
| 320 | |
| 321 monitor_connection = null; | |
| 322 } | |
| 323 | |
| 324 | |
| 325 public char[] bytesToChars(byte[] b, int len) { | |
| 326 char[] c = new char[len >> 1]; | |
| 327 int bp = 0; | |
| 328 | |
| 329 for (int i = 0; i < c.length; i++) { | |
| 330 byte b1 = b[bp++]; | |
| 331 byte b2 = b[bp++]; | |
| 332 c[i] = (char)(((b1 & 0x00FF) << 8) + (b2 & 0x00FF)); | |
| 333 } | |
| 334 | |
| 335 return c; | |
| 336 } | |
| 337 | |
| 338 | |
| 339 public byte[] charsToBytes(char[] c) { | |
| 340 byte[] b = new byte[c.length << 1]; | |
| 341 int bp = 0; | |
| 342 | |
| 343 for (int i = 0; i < c.length; i++) { | |
| 344 b[bp++] = (byte)((c[i] & 0xff00) >> 8); | |
| 345 b[bp++] = (byte)(c[i] & 0x00ff); | |
| 346 } | |
| 347 | |
| 348 return b; | |
| 349 } | |
| 350 | |
| 351 | |
|
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352 public void monitorWrite(char cmd, char[] c) { |
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353 c[1] = cmd; |
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354 pending_commands.put(c); |
| 0 | 355 }; |
| 356 | |
|
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357 public void resetWatch() { |
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358 start_line = 0; |
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359 end_line = 500; |
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360 start_column = 0; |
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361 end_column = 500; |
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362 }; |
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363 |
| 0 | 364 public void sendScreen(char cmd) { |
| 365 char lines = (char)(buffer.height & 0x0000ffff); | |
| 366 char columns = (char)(buffer.width & 0x0000ffff); | |
| 367 char[] arg = new char[4 + lines * columns]; | |
| 368 arg[2] = lines; | |
| 369 arg[3] = columns; | |
| 370 int base = 4; | |
|
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371 |
| 0 | 372 for (int i = 0; i < lines; i++) { |
| 373 System.arraycopy(buffer.charArray[buffer.screenBase + i], 0, arg, base, columns); | |
| 374 base += columns; | |
| 375 } | |
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376 |
| 0 | 377 monitorWrite(cmd, arg); |
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378 resetWatch(); |
| 0 | 379 } |
| 380 | |
| 381 public synchronized void activate() { | |
| 382 sendScreen(MONITOR_CMD_ACTIVATE); | |
|
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383 cursorMoved(CURSOR_SCREEN_CHANGE); |
| 0 | 384 } |
| 385 | |
|
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386 public synchronized void keyState(boolean down) { |
| 0 | 387 char[] arg = new char[3]; |
|
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388 arg[2] = (char)((down) ? 1 : 0); |
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389 monitorWrite(MONITOR_CMD_KEYSTATE, arg); |
| 0 | 390 } |
| 391 | |
| 392 public synchronized void cursorMove(int l, int c) { | |
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393 if ((to_line != l) || (to_column != c)) moved = true; |
| 307 | 394 |
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395 to_line = l; |
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396 to_column = c; |
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397 } |
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398 |
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399 public void cursorMoved(char why) { |
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400 char[] arg = new char[5]; |
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401 arg[2] = (char)(to_line & 0x0000ffff); |
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402 arg[3] = (char)(to_column & 0x0000ffff); |
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403 arg[4] = why; |
| 0 | 404 monitorWrite(MONITOR_CMD_CURSORMOVE, arg); |
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405 moved = false; |
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406 } |
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407 |
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408 public void testMoved() { |
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409 if (moved) cursorMoved(CURSOR_USER_KEY); |
| 0 | 410 } |
| 411 | |
| 412 public synchronized void testChanged() { | |
| 413 if (modified) { | |
| 414 modified = false; | |
| 415 sendScreen(MONITOR_CMD_SCREENCHANGE); | |
|
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416 cursorMoved(CURSOR_SCREEN_CHANGE); |
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417 } |
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418 else { |
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419 if (moved) cursorMoved(CURSOR_SCREEN_CHANGE); |
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420 } |
| 0 | 421 } |
| 422 | |
| 423 public synchronized void screenChanged(int llow, int lhigh, int clow, int chigh) { | |
| 424 if ((start_line <= lhigh) && (llow <= end_line) && (start_column <= chigh) && (clow <= end_column)) { | |
| 425 modified = true; | |
| 426 } | |
| 427 } | |
| 428 | |
| 429 public synchronized void screenChanged(int l, int c) { | |
| 430 screenChanged(l, l, c, c); | |
| 431 } | |
| 432 | |
| 433 public synchronized void setField(int l, int c, char[] data, int offset) { | |
| 434 Log.i(TAG, "setField()"); | |
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435 int len = data.length - offset; |
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436 char[] da = new char[len]; |
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437 System.arraycopy(data, offset, da, 0, len); |
| 307 | 438 |
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439 if ((l > 60000) || (c > 60000)) { |
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440 l = -1; |
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441 c = -1; |
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442 } |
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443 else { |
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444 // ignore setfield outside screen boundaries |
| 307 | 445 if ((l >= buffer.height) || (c + len >= buffer.width)) return; |
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446 } |
| 307 | 447 |
| 100 | 448 buffer.setField(l, c, da); |
| 0 | 449 } |
| 450 | |
| 155 | 451 public synchronized void showUrl(char [] data, int offset) { |
| 452 Log.i(TAG, "setField()"); | |
| 453 char[] da = new char[data.length - offset]; | |
| 307 | 454 System.arraycopy(data, offset, da, 0, data.length - offset); |
| 155 | 455 String url = new String(da); |
| 456 Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); | |
| 457 parent.startActivity(intent); | |
| 458 } | |
| 459 | |
| 0 | 460 public synchronized void getField(int l, int c, int len) { |
| 461 Log.i(TAG, "getField()"); | |
| 462 char[] arg2 = new char[4 + len]; | |
| 463 arg2[2] = (char)(l & 0x0000ffff); | |
| 464 arg2[3] = (char)(c & 0x0000ffff); | |
| 465 int base = 4; | |
| 307 | 466 |
| 467 if ((l >= buffer.height) || (c + len >= buffer.width)) { | |
| 468 Arrays.fill(arg2, base, len - 1, ' '); | |
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469 } |
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470 else { |
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471 System.arraycopy(buffer.charArray[buffer.screenBase + l], c, arg2, base, len); |
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472 } |
| 307 | 473 |
| 0 | 474 monitorWrite(MONITOR_CMD_FIELDVALUE, arg2); |
| 475 } | |
| 476 | |
| 477 public synchronized void screenWatch(int l, int c, int len) { | |
| 478 Log.i(TAG, "screenWatch()"); | |
| 479 start_line = l; | |
| 480 end_line = l; | |
| 481 start_column = c; | |
| 482 end_column = c + len - 1; | |
| 483 } | |
| 484 | |
| 485 public synchronized void depress(int vk_key) { | |
| 486 Log.i(TAG, String.format("depress() %d", vk_key)); | |
| 487 Integer x = keymap.get(new Integer(vk_key)); | |
| 307 | 488 |
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489 if (x != null) buffer.keyDepressed(x, ' ', 0); |
| 0 | 490 } |
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491 |
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492 public synchronized void switchSession() { |
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493 Log.i(TAG, "switchSession()"); |
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494 Intent intent = new Intent(parent, ConsoleActivity.class); |
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495 intent.setAction(Intent.ACTION_VIEW); |
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496 intent.setData(host.getUri()); |
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497 parent.startActivity(intent); |
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498 } |
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499 |
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500 |
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501 public synchronized void cursorRequest() { |
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502 Log.i(TAG, "cursorRequest()"); |
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503 cursorMoved(CURSOR_REQUESTED); |
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504 } |
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505 |
| 0 | 506 } |