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comparison src/com/five_ten_sg/connectbot/service/TerminalMonitor.java @ 0:0ce5cc452d02

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initial version
author Carl Byington <carl@five-ten-sg.com>
date Thu, 22 May 2014 10:41:19 -0700
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children 1588e359a972 6b0f1ece1d91
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-1:000000000000 0:0ce5cc452d02
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;
7 import android.os.IBinder;
8 import android.util.Log;
9 import android.view.KeyEvent;
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;
18 import java.util.HashMap;
19
20 public class TerminalMonitor {
21 public final static String TAG = "ConnectBot.TerminalMonitor";
22
23 public static final char MONITOR_CMD_INIT = 0;
24 public static final char MONITOR_CMD_ACTIVATE = 1;
25 public static final char MONITOR_CMD_HOSTDATA = 2;
26 public static final char MONITOR_CMD_CURSORMOVE = 3;
27 public static final char MONITOR_CMD_SCREENCHANGE = 4;
28 public static final char MONITOR_CMD_FIELDVALUE = 5;
29 public static final char MONITOR_CMD_SETFIELD = 5;
30 public static final char MONITOR_CMD_GETFIELD = 6;
31 public static final char MONITOR_CMD_SCREENWATCH = 7;
32 public static final char MONITOR_CMD_DEPRESS = 8;
33
34 private static final int MONITORPORT = 6000;
35 private static final String LOCALHOST = "127.0.0.1";
36
37 private Context parent = null;
38 private vt320 buffer = null;
39 private TerminalKeyListener keyListener = null;
40 private View view = null;
41 private String init = null;
42 private int start_line = 0; // monitor part of the screen for changes
43 private int end_line = 500; // ""
44 private int start_column = 0; // ""
45 private int end_column = 500; // ""
46 private boolean modified = false; // ""
47 private HashMap<Integer,Integer> keymap = null;
48 private IBinder bound = null;
49 private Socket monitor_socket = null;
50 private InputStream monitor_in = null;
51 private OutputStream monitor_out = null;
52 private MyReader monitor_reader = null;
53 private MyServiceConnection monitor_connection = new MyServiceConnection();
54
55 class MyReader extends Thread {
56 private InputStream monitor_in;
57 private byte[] b;
58 private boolean is_closing = false;
59
60 public MyReader(InputStream monitor_in) {
61 this.monitor_in = monitor_in;
62 b = new byte[100];
63 Log.i(TAG, "MyReader constructor");
64 }
65
66 public void closing() {
67 is_closing = true;
68 }
69
70 private char[] forceRead(int len) throws IOException {
71 int len2 = len * 2;
72 int off = 0;
73
74 if (b.length < len2) b = new byte[len2];
75
76 while (off < len2) {
77 int l = monitor_in.read(b, off, len2 - off);
78
79 if (l < 0) throw new IOException("eof");
80
81 off += l;
82 }
83
84 return bytesToChars(b, len2);
85 }
86
87 public void run() {
88 while (true) {
89 try {
90 char[] len = forceRead(1);
91 char[] packet = forceRead(len[0]);
92 char cmd = packet[0];
93 Log.i(TAG, String.format("received %d command", (int)cmd));
94
95 switch (cmd) {
96 case MONITOR_CMD_SETFIELD:
97 if (packet.length >= 4)
98 setField(packet[1], packet[2], packet, 3);
99 break;
100
101 case MONITOR_CMD_GETFIELD:
102 if (packet.length == 4)
103 getField(packet[1], packet[2], packet[3]);
104 break;
105
106 case MONITOR_CMD_SCREENWATCH:
107 if (packet.length == 4)
108 screenWatch(packet[1], packet[2], packet[3]);
109 break;
110
111 case MONITOR_CMD_DEPRESS:
112 if (packet.length == 2)
113 depress(packet[1]);
114 break;
115
116 default:
117 break;
118 }
119 }
120 catch (IOException e) {
121 if (!is_closing) Log.e(TAG, "exception in MyReader.run()", e);
122
123 break;
124 }
125 }
126 }
127 }
128
129 class MyServiceConnection implements ServiceConnection {
130 public void onServiceConnected(ComponentName className, IBinder service) {
131 bound = service;
132 Log.i(TAG, "bound to service");
133
134 try {
135 InetAddress serverAddr = InetAddress.getByName(LOCALHOST);
136 monitor_socket = new Socket(serverAddr, MONITORPORT);
137 monitor_in = monitor_socket.getInputStream();
138 monitor_out = monitor_socket.getOutputStream();
139 Log.i(TAG, "connected to monitor socket, send init " + init);
140 monitor_reader = new MyReader(monitor_in);
141 monitor_reader.start();
142 String x = " " + init;
143 monitorWrite(MONITOR_CMD_INIT, x.toCharArray());
144 }
145 catch (IOException e) {
146 Log.e(TAG, "exception in onServiceConnected()", e);
147 }
148 }
149 public void onServiceDisconnected(ComponentName classNam) {
150 bound = null;
151 Log.i(TAG, "unbound from service");
152 }
153 };
154
155
156 public TerminalMonitor(Context parent, vt320 buffer, TerminalKeyListener keyListener, View view, String init) {
157 this.parent = parent;
158 this.buffer = buffer;
159 this.keyListener = keyListener;
160 this.view = view;
161 this.init = init;
162
163 // setup the windows->android keymapping
164 // http://msdn.microsoft.com/en-us/library/windows/desktop/dd375731%28v=vs.85%29.aspx
165 // http://developer.android.com/reference/android/view/KeyEvent.html
166 keymap = new HashMap<Integer,Integer>();
167 keymap.put(0x08, KeyEvent.KEYCODE_BACK); // vk_back
168 keymap.put(0x09, KeyEvent.KEYCODE_TAB); // vk_tab
169 keymap.put(0x0d, KeyEvent.KEYCODE_ENTER); // vk_return
170 keymap.put(0x1b, KeyEvent.KEYCODE_ESCAPE); // vk_escape
171 keymap.put(0x21, KeyEvent.KEYCODE_PAGE_UP); // vk_prior
172 keymap.put(0x22, KeyEvent.KEYCODE_PAGE_DOWN); // vk_next
173 keymap.put(0x23, KeyEvent.KEYCODE_MOVE_END); // vk_end
174 keymap.put(0x24, KeyEvent.KEYCODE_MOVE_HOME); // vk_home
175 keymap.put(0x25, KeyEvent.KEYCODE_DPAD_LEFT); // vk_left
176 keymap.put(0x26, KeyEvent.KEYCODE_DPAD_UP); // vk_up
177 keymap.put(0x27, KeyEvent.KEYCODE_DPAD_RIGHT); // vk_right
178 keymap.put(0x28, KeyEvent.KEYCODE_DPAD_DOWN); // vk_down
179 keymap.put(0x2d, KeyEvent.KEYCODE_INSERT); // vk_insert
180 keymap.put(0x2e, KeyEvent.KEYCODE_DEL); // vk_delete
181 keymap.put(0x70, KeyEvent.KEYCODE_F1); // vk_f1
182 keymap.put(0x71, KeyEvent.KEYCODE_F2); // vk_f2
183 keymap.put(0x72, KeyEvent.KEYCODE_F3); // vk_f3
184 keymap.put(0x73, KeyEvent.KEYCODE_F4); // vk_f4
185 keymap.put(0x74, KeyEvent.KEYCODE_F5); // vk_f5
186 keymap.put(0x75, KeyEvent.KEYCODE_F6); // vk_f6
187 keymap.put(0x76, KeyEvent.KEYCODE_F7); // vk_f7
188 keymap.put(0x77, KeyEvent.KEYCODE_F8); // vk_f8
189 keymap.put(0x78, KeyEvent.KEYCODE_F9); // vk_f9
190 keymap.put(0x79, KeyEvent.KEYCODE_F10); // vk_f10
191 keymap.put(0x7a, KeyEvent.KEYCODE_F11); // vk_f11
192 keymap.put(0x7b, KeyEvent.KEYCODE_F12); // vk_f12
193
194 // bind to the monitor service
195 Intent intent = new Intent("com.five_ten_sg.connectbot.monitor.MonitorService");
196 parent.bindService(intent, monitor_connection, Context.BIND_AUTO_CREATE);
197 Log.i(TAG, "constructor");
198 }
199
200
201 public void Disconnect() {
202 if (monitor_reader != null) monitor_reader.closing();
203
204 try {
205 if (monitor_out != null) monitor_out.close();
206
207 if (monitor_in != null) monitor_in.close();
208
209 if (monitor_socket != null) monitor_socket.close();
210
211 Log.i(TAG, "disconnected from monitor socket");
212 }
213 catch (IOException e) {
214 Log.e(TAG, "exception in Disconnect() closing sockets", e);
215 }
216
217 monitor_reader = null;
218 monitor_out = null;
219 monitor_in = null;
220 monitor_socket = null;
221
222 if (bound != null) parent.unbindService(monitor_connection);
223
224 monitor_connection = null;
225 }
226
227
228 public char[] bytesToChars(byte[] b, int len) {
229 char[] c = new char[len >> 1];
230 int bp = 0;
231
232 for (int i = 0; i < c.length; i++) {
233 byte b1 = b[bp++];
234 byte b2 = b[bp++];
235 c[i] = (char)(((b1 & 0x00FF) << 8) + (b2 & 0x00FF));
236 }
237
238 return c;
239 }
240
241
242 public byte[] charsToBytes(char[] c) {
243 byte[] b = new byte[c.length << 1];
244 int bp = 0;
245
246 for (int i = 0; i < c.length; i++) {
247 b[bp++] = (byte)((c[i] & 0xff00) >> 8);
248 b[bp++] = (byte)(c[i] & 0x00ff);
249 }
250
251 return b;
252 }
253
254
255 public synchronized void monitorWrite(char cmd, char[] c) {
256 try {
257 if (monitor_out != null) {
258 c[0] = (char)(c.length - 1); // number of chars following
259 c[1] = cmd;
260 //Log.i(TAG, String.format("sending %d command", (int)cmd));
261 monitor_out.write(charsToBytes(c));
262 }
263 }
264 catch (IOException e) {
265 Log.i(TAG, "exception in monitorWrite(), monitor died or closed the socket", e);
266
267 try {
268 monitor_out.close();
269 }
270 catch (IOException ee) {
271 Log.e(TAG, "exception in monitorWrite() closing output stream", ee);
272 }
273
274 monitor_out = null;
275 }
276 };
277
278 public void sendScreen(char cmd) {
279 char lines = (char)(buffer.height & 0x0000ffff);
280 char columns = (char)(buffer.width & 0x0000ffff);
281 char[] arg = new char[4 + lines * columns];
282 arg[2] = lines;
283 arg[3] = columns;
284 int base = 4;
285 for (int i = 0; i < lines; i++) {
286 System.arraycopy(buffer.charArray[buffer.screenBase + i], 0, arg, base, columns);
287 base += columns;
288 }
289 monitorWrite(cmd, arg);
290 }
291
292 public synchronized void activate() {
293 sendScreen(MONITOR_CMD_ACTIVATE);
294 }
295
296 public synchronized void hostData(byte[] b) {
297 for (int i = 0; i < b.length; i++) {
298 hostData((int)b[i] & 0xff);
299 }
300 }
301
302 public synchronized void hostData(int b) {
303 char[] arg = new char[3];
304 arg[2] = (char)(b & 0x0000ffff);
305 monitorWrite(MONITOR_CMD_HOSTDATA, arg);
306 }
307
308 public synchronized void cursorMove(int l, int c) {
309 char[] arg = new char[4];
310 arg[2] = (char)(l & 0x0000ffff);
311 arg[3] = (char)(c & 0x0000ffff);
312 monitorWrite(MONITOR_CMD_CURSORMOVE, arg);
313 }
314
315 public synchronized void testChanged() {
316 if (modified) {
317 modified = false;
318 sendScreen(MONITOR_CMD_SCREENCHANGE);
319 }
320 }
321
322 public synchronized void screenChanged(int llow, int lhigh, int clow, int chigh) {
323 if ((start_line <= lhigh) && (llow <= end_line) && (start_column <= chigh) && (clow <= end_column)) {
324 modified = true;
325 }
326 }
327
328 public synchronized void screenChanged(int l, int c) {
329 screenChanged(l, l, c, c);
330 }
331
332 public synchronized void setField(int l, int c, char[] data, int offset) {
333 Log.i(TAG, "setField()");
334 byte[] d = charsToBytes(data);
335 byte[] b = new byte[d.length - offset];
336 System.arraycopy(d, offset, b, 0, d.length - offset);
337 buffer.write(b);
338 }
339
340 public synchronized void getField(int l, int c, int len) {
341 Log.i(TAG, "getField()");
342 char[] arg2 = new char[4 + len];
343 arg2[2] = (char)(l & 0x0000ffff);
344 arg2[3] = (char)(c & 0x0000ffff);
345 int base = 4;
346 System.arraycopy(buffer.charArray[buffer.screenBase + l], c, arg2, base, len);
347 monitorWrite(MONITOR_CMD_FIELDVALUE, arg2);
348 }
349
350 public synchronized void screenWatch(int l, int c, int len) {
351 Log.i(TAG, "screenWatch()");
352 start_line = l;
353 end_line = l;
354 start_column = c;
355 end_column = c + len - 1;
356 }
357
358 public synchronized void depress(int vk_key) {
359 Log.i(TAG, String.format("depress() %d", vk_key));
360 Integer x = keymap.get(new Integer(vk_key));
361 if (x != null) {
362 KeyEvent event = new KeyEvent(KeyEvent.ACTION_DOWN, x.intValue());
363 keyListener.onKey(view, event.getKeyCode(), event);
364 }
365 }
366 }