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1 package com.five_ten_sg.connectbot.service;
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2
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3 import android.content.ComponentName;
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4 import android.content.Context;
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5 import android.content.Intent;
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6 import android.content.ServiceConnection;
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7 import android.os.IBinder;
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8 import android.util.Log;
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9 import android.view.KeyEvent;
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10 import android.view.View;
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11 import de.mud.terminal.vt320;
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12 import java.io.IOException;
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13 import java.io.InputStream;
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14 import java.io.OutputStream;
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15 import java.net.InetAddress;
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16 import java.net.Socket;
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17 import java.nio.charset.Charset;
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18 import java.util.HashMap;
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19
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20 public class TerminalMonitor {
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21 public final static String TAG = "ConnectBot.TerminalMonitor";
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22
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23 public static final char MONITOR_CMD_INIT = 0;
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24 public static final char MONITOR_CMD_ACTIVATE = 1;
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25 public static final char MONITOR_CMD_HOSTDATA = 2;
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26 public static final char MONITOR_CMD_CURSORMOVE = 3;
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27 public static final char MONITOR_CMD_SCREENCHANGE = 4;
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28 public static final char MONITOR_CMD_FIELDVALUE = 5;
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29 public static final char MONITOR_CMD_SETFIELD = 5;
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30 public static final char MONITOR_CMD_GETFIELD = 6;
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31 public static final char MONITOR_CMD_SCREENWATCH = 7;
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32 public static final char MONITOR_CMD_DEPRESS = 8;
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33
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34 private static final int MONITORPORT = 6000;
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35 private static final String LOCALHOST = "127.0.0.1";
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36
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37 private Context parent = null;
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38 private vt320 buffer = null;
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39 private TerminalKeyListener keyListener = null;
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40 private View view = null;
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41 private String init = null;
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42 private int start_line = 0; // monitor part of the screen for changes
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43 private int end_line = 500; // ""
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44 private int start_column = 0; // ""
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45 private int end_column = 500; // ""
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46 private boolean modified = false; // ""
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47 private HashMap<Integer,Integer> keymap = null;
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48 private IBinder bound = null;
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49 private Socket monitor_socket = null;
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50 private InputStream monitor_in = null;
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51 private OutputStream monitor_out = null;
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52 private MyReader monitor_reader = null;
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53 private MyServiceConnection monitor_connection = new MyServiceConnection();
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54
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55 class MyReader extends Thread {
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56 private InputStream monitor_in;
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57 private byte[] b;
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58 private boolean is_closing = false;
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59
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60 public MyReader(InputStream monitor_in) {
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61 this.monitor_in = monitor_in;
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62 b = new byte[100];
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63 Log.i(TAG, "MyReader constructor");
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64 }
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65
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66 public void closing() {
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67 is_closing = true;
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68 }
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69
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70 private char[] forceRead(int len) throws IOException {
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71 int len2 = len * 2;
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72 int off = 0;
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73
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74 if (b.length < len2) b = new byte[len2];
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75
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76 while (off < len2) {
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77 int l = monitor_in.read(b, off, len2 - off);
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78
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79 if (l < 0) throw new IOException("eof");
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80
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81 off += l;
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82 }
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83
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84 return bytesToChars(b, len2);
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85 }
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86
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87 public void run() {
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88 while (true) {
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89 try {
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90 char[] len = forceRead(1);
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91 char[] packet = forceRead(len[0]);
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92 char cmd = packet[0];
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93 Log.i(TAG, String.format("received %d command", (int)cmd));
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94
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95 switch (cmd) {
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96 case MONITOR_CMD_SETFIELD:
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97 if (packet.length >= 4)
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98 setField(packet[1], packet[2], packet, 3);
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99 break;
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100
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101 case MONITOR_CMD_GETFIELD:
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102 if (packet.length == 4)
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103 getField(packet[1], packet[2], packet[3]);
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104 break;
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105
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106 case MONITOR_CMD_SCREENWATCH:
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107 if (packet.length == 4)
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108 screenWatch(packet[1], packet[2], packet[3]);
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109 break;
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110
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111 case MONITOR_CMD_DEPRESS:
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112 if (packet.length == 2)
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113 depress(packet[1]);
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114 break;
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115
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116 default:
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117 break;
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118 }
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119 }
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120 catch (IOException e) {
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121 if (!is_closing) Log.e(TAG, "exception in MyReader.run()", e);
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122
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123 break;
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124 }
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125 }
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126 }
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127 }
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128
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129 class MyServiceConnection implements ServiceConnection {
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130 public void onServiceConnected(ComponentName className, IBinder service) {
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131 bound = service;
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132 Log.i(TAG, "bound to service");
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133
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134 try {
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135 InetAddress serverAddr = InetAddress.getByName(LOCALHOST);
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136 monitor_socket = new Socket(serverAddr, MONITORPORT);
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137 monitor_in = monitor_socket.getInputStream();
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138 monitor_out = monitor_socket.getOutputStream();
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139 Log.i(TAG, "connected to monitor socket, send init " + init);
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140 monitor_reader = new MyReader(monitor_in);
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141 monitor_reader.start();
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142 String x = " " + init;
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143 monitorWrite(MONITOR_CMD_INIT, x.toCharArray());
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144 }
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145 catch (IOException e) {
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146 Log.e(TAG, "exception in onServiceConnected()", e);
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147 }
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148 }
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149 public void onServiceDisconnected(ComponentName classNam) {
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150 bound = null;
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151 Log.i(TAG, "unbound from service");
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152 }
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153 };
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154
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155
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156 public TerminalMonitor(Context parent, vt320 buffer, TerminalKeyListener keyListener, View view, String init) {
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157 this.parent = parent;
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158 this.buffer = buffer;
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159 this.keyListener = keyListener;
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160 this.view = view;
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161 this.init = init;
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162
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163 // setup the windows->android keymapping
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164 // http://msdn.microsoft.com/en-us/library/windows/desktop/dd375731%28v=vs.85%29.aspx
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165 // http://developer.android.com/reference/android/view/KeyEvent.html
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166 keymap = new HashMap<Integer,Integer>();
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167 keymap.put(0x08, KeyEvent.KEYCODE_BACK); // vk_back
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168 keymap.put(0x09, KeyEvent.KEYCODE_TAB); // vk_tab
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169 keymap.put(0x0d, KeyEvent.KEYCODE_ENTER); // vk_return
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170 keymap.put(0x1b, KeyEvent.KEYCODE_ESCAPE); // vk_escape
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171 keymap.put(0x21, KeyEvent.KEYCODE_PAGE_UP); // vk_prior
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172 keymap.put(0x22, KeyEvent.KEYCODE_PAGE_DOWN); // vk_next
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173 keymap.put(0x23, KeyEvent.KEYCODE_MOVE_END); // vk_end
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174 keymap.put(0x24, KeyEvent.KEYCODE_MOVE_HOME); // vk_home
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175 keymap.put(0x25, KeyEvent.KEYCODE_DPAD_LEFT); // vk_left
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176 keymap.put(0x26, KeyEvent.KEYCODE_DPAD_UP); // vk_up
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177 keymap.put(0x27, KeyEvent.KEYCODE_DPAD_RIGHT); // vk_right
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178 keymap.put(0x28, KeyEvent.KEYCODE_DPAD_DOWN); // vk_down
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179 keymap.put(0x2d, KeyEvent.KEYCODE_INSERT); // vk_insert
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180 keymap.put(0x2e, KeyEvent.KEYCODE_DEL); // vk_delete
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181 keymap.put(0x70, KeyEvent.KEYCODE_F1); // vk_f1
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182 keymap.put(0x71, KeyEvent.KEYCODE_F2); // vk_f2
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183 keymap.put(0x72, KeyEvent.KEYCODE_F3); // vk_f3
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184 keymap.put(0x73, KeyEvent.KEYCODE_F4); // vk_f4
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185 keymap.put(0x74, KeyEvent.KEYCODE_F5); // vk_f5
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186 keymap.put(0x75, KeyEvent.KEYCODE_F6); // vk_f6
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187 keymap.put(0x76, KeyEvent.KEYCODE_F7); // vk_f7
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188 keymap.put(0x77, KeyEvent.KEYCODE_F8); // vk_f8
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189 keymap.put(0x78, KeyEvent.KEYCODE_F9); // vk_f9
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190 keymap.put(0x79, KeyEvent.KEYCODE_F10); // vk_f10
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191 keymap.put(0x7a, KeyEvent.KEYCODE_F11); // vk_f11
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192 keymap.put(0x7b, KeyEvent.KEYCODE_F12); // vk_f12
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193
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194 // bind to the monitor service
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195 Intent intent = new Intent("com.five_ten_sg.connectbot.monitor.MonitorService");
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196 parent.bindService(intent, monitor_connection, Context.BIND_AUTO_CREATE);
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197 Log.i(TAG, "constructor");
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198 }
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199
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200
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201 public void Disconnect() {
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202 if (monitor_reader != null) monitor_reader.closing();
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203
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204 try {
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205 if (monitor_out != null) monitor_out.close();
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206
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207 if (monitor_in != null) monitor_in.close();
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208
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209 if (monitor_socket != null) monitor_socket.close();
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210
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211 Log.i(TAG, "disconnected from monitor socket");
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212 }
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213 catch (IOException e) {
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214 Log.e(TAG, "exception in Disconnect() closing sockets", e);
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215 }
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216
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217 monitor_reader = null;
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218 monitor_out = null;
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219 monitor_in = null;
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220 monitor_socket = null;
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221
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222 if (bound != null) parent.unbindService(monitor_connection);
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223
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224 monitor_connection = null;
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225 }
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226
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227
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228 public char[] bytesToChars(byte[] b, int len) {
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229 char[] c = new char[len >> 1];
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230 int bp = 0;
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231
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232 for (int i = 0; i < c.length; i++) {
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233 byte b1 = b[bp++];
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234 byte b2 = b[bp++];
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235 c[i] = (char)(((b1 & 0x00FF) << 8) + (b2 & 0x00FF));
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236 }
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237
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238 return c;
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239 }
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240
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241
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242 public byte[] charsToBytes(char[] c) {
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243 byte[] b = new byte[c.length << 1];
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244 int bp = 0;
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245
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246 for (int i = 0; i < c.length; i++) {
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247 b[bp++] = (byte)((c[i] & 0xff00) >> 8);
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248 b[bp++] = (byte)(c[i] & 0x00ff);
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249 }
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250
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251 return b;
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252 }
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253
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254
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255 public synchronized void monitorWrite(char cmd, char[] c) {
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256 try {
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257 if (monitor_out != null) {
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258 c[0] = (char)(c.length - 1); // number of chars following
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259 c[1] = cmd;
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260 //Log.i(TAG, String.format("sending %d command", (int)cmd));
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261 monitor_out.write(charsToBytes(c));
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262 }
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263 }
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264 catch (IOException e) {
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265 Log.i(TAG, "exception in monitorWrite(), monitor died or closed the socket", e);
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266
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267 try {
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268 monitor_out.close();
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269 }
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270 catch (IOException ee) {
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271 Log.e(TAG, "exception in monitorWrite() closing output stream", ee);
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272 }
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273
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274 monitor_out = null;
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275 }
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276 };
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277
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278 public void sendScreen(char cmd) {
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279 char lines = (char)(buffer.height & 0x0000ffff);
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280 char columns = (char)(buffer.width & 0x0000ffff);
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281 char[] arg = new char[4 + lines * columns];
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282 arg[2] = lines;
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283 arg[3] = columns;
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284 int base = 4;
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285 for (int i = 0; i < lines; i++) {
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286 System.arraycopy(buffer.charArray[buffer.screenBase + i], 0, arg, base, columns);
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287 base += columns;
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288 }
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289 monitorWrite(cmd, arg);
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290 }
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291
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292 public synchronized void activate() {
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293 sendScreen(MONITOR_CMD_ACTIVATE);
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294 }
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295
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296 public synchronized void hostData(byte[] b) {
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297 for (int i = 0; i < b.length; i++) {
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298 hostData((int)b[i] & 0xff);
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299 }
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300 }
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301
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302 public synchronized void hostData(int b) {
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303 char[] arg = new char[3];
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304 arg[2] = (char)(b & 0x0000ffff);
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305 monitorWrite(MONITOR_CMD_HOSTDATA, arg);
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306 }
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307
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308 public synchronized void cursorMove(int l, int c) {
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309 char[] arg = new char[4];
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310 arg[2] = (char)(l & 0x0000ffff);
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311 arg[3] = (char)(c & 0x0000ffff);
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312 monitorWrite(MONITOR_CMD_CURSORMOVE, arg);
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313 }
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314
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315 public synchronized void testChanged() {
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316 if (modified) {
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317 modified = false;
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318 sendScreen(MONITOR_CMD_SCREENCHANGE);
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319 }
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320 }
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321
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322 public synchronized void screenChanged(int llow, int lhigh, int clow, int chigh) {
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323 if ((start_line <= lhigh) && (llow <= end_line) && (start_column <= chigh) && (clow <= end_column)) {
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324 modified = true;
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325 }
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326 }
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327
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328 public synchronized void screenChanged(int l, int c) {
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329 screenChanged(l, l, c, c);
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330 }
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331
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332 public synchronized void setField(int l, int c, char[] data, int offset) {
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333 Log.i(TAG, "setField()");
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334 byte[] d = charsToBytes(data);
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335 byte[] b = new byte[d.length - offset];
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336 System.arraycopy(d, offset, b, 0, d.length - offset);
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337 buffer.write(b);
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338 }
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339
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340 public synchronized void getField(int l, int c, int len) {
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341 Log.i(TAG, "getField()");
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342 char[] arg2 = new char[4 + len];
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343 arg2[2] = (char)(l & 0x0000ffff);
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344 arg2[3] = (char)(c & 0x0000ffff);
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345 int base = 4;
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346 System.arraycopy(buffer.charArray[buffer.screenBase + l], c, arg2, base, len);
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347 monitorWrite(MONITOR_CMD_FIELDVALUE, arg2);
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348 }
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349
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350 public synchronized void screenWatch(int l, int c, int len) {
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351 Log.i(TAG, "screenWatch()");
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352 start_line = l;
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353 end_line = l;
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354 start_column = c;
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355 end_column = c + len - 1;
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356 }
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357
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358 public synchronized void depress(int vk_key) {
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359 Log.i(TAG, String.format("depress() %d", vk_key));
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360 Integer x = keymap.get(new Integer(vk_key));
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361 if (x != null) {
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362 KeyEvent event = new KeyEvent(KeyEvent.ACTION_DOWN, x.intValue());
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363 keyListener.onKey(view, event.getKeyCode(), event);
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364 }
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365 }
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366 }
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