Mercurial > 510Connectbot
diff app/src/main/java/com/five_ten_sg/connectbot/service/TerminalMonitor.java @ 438:d29cce60f393
migrate from Eclipse to Android Studio
author | Carl Byington <carl@five-ten-sg.com> |
---|---|
date | Thu, 03 Dec 2015 11:23:55 -0800 |
parents | src/com/five_ten_sg/connectbot/service/TerminalMonitor.java@b284b8f9e535 |
children | 105815cce146 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/app/src/main/java/com/five_ten_sg/connectbot/service/TerminalMonitor.java Thu Dec 03 11:23:55 2015 -0800 @@ -0,0 +1,522 @@ +package com.five_ten_sg.connectbot.service; + +import android.content.ComponentName; +import android.content.Context; +import android.content.Intent; +import android.content.ServiceConnection; +import android.net.Uri; +import android.os.IBinder; +import android.util.Log; +import android.view.View; +import de.mud.terminal.vt320; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.net.InetAddress; +import java.net.Socket; +import java.nio.charset.Charset; +import java.util.Arrays; +import java.util.HashMap; +import java.util.concurrent.ArrayBlockingQueue; +import java.util.concurrent.BlockingQueue; +import java.util.concurrent.ConcurrentHashMap; + +import com.five_ten_sg.connectbot.ConsoleActivity; +import com.five_ten_sg.connectbot.bean.HostBean; + + +public class TerminalMonitor { + public final static String TAG = "ConnectBot.TerminalMonitor"; + + public static final char MONITOR_CMD_INIT = 0; + public static final char MONITOR_CMD_ACTIVATE = 1; + public static final char MONITOR_CMD_KEYSTATE = 2; + public static final char MONITOR_CMD_CURSORMOVE = 3; + public static final char MONITOR_CMD_SCREENCHANGE = 4; + public static final char MONITOR_CMD_FIELDVALUE = 5; + public static final char MONITOR_CMD_SETFIELD = 5; + public static final char MONITOR_CMD_GETFIELD = 6; + public static final char MONITOR_CMD_SCREENWATCH = 7; + public static final char MONITOR_CMD_DEPRESS = 8; + public static final char MONITOR_CMD_SHOWURL = 9; + public static final char MONITOR_CMD_SWITCHSESSION = 10; + public static final char MONITOR_CMD_CURSORREQUEST = 11; + + public static final String[] commands = { + "cmd_init", + "cmd_activate", + "cmd_keystate", + "cmd_cursormove", + "cmd_screenchange", + "cmd_fieldvalue/setfield", + "cmd_getfield", + "cmd_screenwatch", + "cmd_depress", + "cmd_showurl", + "cmd_switchsession", + "cmd_cursorrequest" + }; + + public static final char CURSOR_REQUESTED = 0; + public static final char CURSOR_SCREEN_CHANGE = 1; + public static final char CURSOR_USER_KEY = 2; + + private static final int MONITORPORT = 6000; + private static final String LOCALHOST = "127.0.0.1"; + + private Context parent = null; + private vt320 buffer = null; + private View view = null; + private HostBean host = null; + private String init = null; + private int start_line = 0; // monitor part of the screen for changes + private int end_line = 500; // "" + private int start_column = 0; // "" + private int end_column = 500; // "" + private boolean modified = false; // used to delay screen change notifications + private boolean moved = false; // used to delay cursor moved notifications + private int to_line = 0; // "" + private int to_column = 0; // "" + private HashMap<Integer, Integer> keymap = null; // map MS VK_ keys to vt320 virtual keys + private IBinder bound = null; + private Socket monitor_socket = null; + private InputStream monitor_in = null; + private OutputStream monitor_out = null; + private MyReader monitor_reader = null; + private BlockingQueue<char[]> pending_commands = new ArrayBlockingQueue<char[]>(100); + private MyServiceConnection monitor_connection = new MyServiceConnection(); + + class MyReader extends Thread { + private InputStream monitor_in; + private byte[] b; + private boolean is_closing = false; + + public MyReader(InputStream monitor_in) { + this.monitor_in = monitor_in; + b = new byte[100]; + Log.i(TAG, "MyReader constructor"); + } + + public void closing() { + is_closing = true; + } + + private char[] forceRead(int len) throws IOException { + int len2 = len * 2; + int off = 0; + + if (b.length < len2) b = new byte[len2]; + + while (off < len2) { + int l = monitor_in.read(b, off, len2 - off); + + if (l < 0) throw new IOException("eof"); + + off += l; + } + + return bytesToChars(b, len2); + } + + public void run() { + while (true) { + try { + char[] len = forceRead(1); + char[] packet = forceRead(len[0]); + char cmd = packet[0]; + Log.i(TAG, String.format("received %s", commands[cmd])); + + switch (cmd) { + case MONITOR_CMD_SETFIELD: + if (packet.length >= 3) + setField(packet[1], packet[2], packet, 3); + + break; + + case MONITOR_CMD_GETFIELD: + if (packet.length == 4) + getField(packet[1], packet[2], packet[3]); + + break; + + case MONITOR_CMD_SCREENWATCH: + if (packet.length == 4) + screenWatch(packet[1], packet[2], packet[3]); + + break; + + case MONITOR_CMD_DEPRESS: + if (packet.length == 2) + depress(packet[1]); + + break; + + case MONITOR_CMD_SHOWURL: + if (packet.length > 1) + showUrl(packet, 1); + + break; + + case MONITOR_CMD_SWITCHSESSION: + if (packet.length == 1) + switchSession(); + + break; + + case MONITOR_CMD_CURSORREQUEST: + if (packet.length == 1) + cursorRequest(); + + break; + + default: + break; + } + } + catch (IOException e) { + if (!is_closing) Log.e(TAG, "exception in MyReader.run()", e); + + break; + } + } + } + } + + class MyServiceConnection implements ServiceConnection { + public void onServiceConnected(ComponentName className, IBinder service) { + bound = service; + Log.i(TAG, "bound to service"); + + try { + InetAddress serverAddr = InetAddress.getByName(LOCALHOST); + int tries = 0; + while (tries < 10) { + try { + Thread.sleep(100); + monitor_socket = new Socket(serverAddr, MONITORPORT); + break; + } + catch (Exception e) { + monitor_socket = null; + Log.e(TAG, "exception connecting to monitor socket", e); + tries = tries + 1; + } + } + if (monitor_socket != null) { + Log.i(TAG, "connected to monitor socket, send init " + init); + monitor_in = monitor_socket.getInputStream(); + monitor_out = monitor_socket.getOutputStream(); + monitor_reader = new MyReader(monitor_in); + monitor_reader.start(); + String x = " " + init; + monitorWrite(MONITOR_CMD_INIT, x.toCharArray()); + char [] c; + + while (true) { + c = pending_commands.poll(); + + if (c == null) break; + + monitorWrite(c[1], c); + } + } + } + catch (IOException e) { + Log.e(TAG, "exception in onServiceConnected()", e); + } + } + public void onServiceDisconnected(ComponentName classNam) { + bound = null; + Log.i(TAG, "unbound from service"); + } + }; + + + public TerminalMonitor(Context parent, vt320 buffer, View view, HostBean host, String init) { + this.parent = parent; + this.buffer = buffer; + this.view = view; + this.host = host; + this.init = init; + // setup the windows->android keymapping + // http://msdn.microsoft.com/en-us/library/windows/desktop/dd375731 + keymap = new HashMap<Integer, Integer>(); + keymap.put(0x08, vt320.KEY_BACK_SPACE); // vk_back + keymap.put(0x09, vt320.KEY_TAB); // vk_tab + keymap.put(0x0d, vt320.KEY_ENTER); // vk_return + keymap.put(0x1b, vt320.KEY_ESCAPE); // vk_escape + keymap.put(0x21, vt320.KEY_PAGE_UP); // vk_prior + keymap.put(0x22, vt320.KEY_PAGE_DOWN); // vk_next + keymap.put(0x23, vt320.KEY_END); // vk_end + keymap.put(0x24, vt320.KEY_HOME); // vk_home + keymap.put(0x25, vt320.KEY_LEFT); // vk_left + keymap.put(0x26, vt320.KEY_UP); // vk_up + keymap.put(0x27, vt320.KEY_RIGHT); // vk_right + keymap.put(0x28, vt320.KEY_DOWN); // vk_down + keymap.put(0x2d, vt320.KEY_INSERT); // vk_insert + keymap.put(0x2e, vt320.KEY_DELETE); // vk_delete + keymap.put(0x70, vt320.KEY_F1); // vk_f1 + keymap.put(0x71, vt320.KEY_F2); // vk_f2 + keymap.put(0x72, vt320.KEY_F3); // vk_f3 + keymap.put(0x73, vt320.KEY_F4); // vk_f4 + keymap.put(0x74, vt320.KEY_F5); // vk_f5 + keymap.put(0x75, vt320.KEY_F6); // vk_f6 + keymap.put(0x76, vt320.KEY_F7); // vk_f7 + keymap.put(0x77, vt320.KEY_F8); // vk_f8 + keymap.put(0x78, vt320.KEY_F9); // vk_f9 + keymap.put(0x79, vt320.KEY_F10); // vk_f10 + keymap.put(0x7a, vt320.KEY_F11); // vk_f11 + keymap.put(0x7b, vt320.KEY_F12); // vk_f12 + keymap.put(0x7c, vt320.KEY_F13); // vk_f13 + keymap.put(0x7d, vt320.KEY_F14); // vk_f14 + keymap.put(0x7e, vt320.KEY_F15); // vk_f15 + keymap.put(0x7f, vt320.KEY_F16); // vk_f16 + keymap.put(0x80, vt320.KEY_F17); // vk_f17 + keymap.put(0x81, vt320.KEY_F18); // vk_f18 + keymap.put(0x82, vt320.KEY_F19); // vk_f19 + keymap.put(0x83, vt320.KEY_F20); // vk_f20 + keymap.put(0x84, vt320.KEY_F21); // vk_f21 + keymap.put(0x85, vt320.KEY_F22); // vk_f22 + keymap.put(0x86, vt320.KEY_F23); // vk_f23 + keymap.put(0x87, vt320.KEY_F24); // vk_f24 + // bind to the monitor service + Intent intent = new Intent("com.five_ten_sg.connectbot.monitor.MonitorService"); + parent.bindService(intent, monitor_connection, Context.BIND_AUTO_CREATE); + Log.i(TAG, "constructor"); + } + + + public void Disconnect() { + if (monitor_reader != null) monitor_reader.closing(); + + try { + if (monitor_out != null) monitor_out.close(); + + if (monitor_in != null) monitor_in.close(); + + if (monitor_socket != null) monitor_socket.close(); + + Log.i(TAG, "disconnected from monitor socket"); + } + catch (IOException e) { + Log.e(TAG, "exception in Disconnect() closing sockets", e); + } + + monitor_reader = null; + monitor_out = null; + monitor_in = null; + monitor_socket = null; + + if (bound != null) parent.unbindService(monitor_connection); + + monitor_connection = null; + } + + + public char[] bytesToChars(byte[] b, int len) { + char[] c = new char[len >> 1]; + int bp = 0; + + for (int i = 0; i < c.length; i++) { + byte b1 = b[bp++]; + byte b2 = b[bp++]; + c[i] = (char)(((b1 & 0x00FF) << 8) + (b2 & 0x00FF)); + } + + return c; + } + + + public byte[] charsToBytes(char[] c) { + byte[] b = new byte[c.length << 1]; + int bp = 0; + + for (int i = 0; i < c.length; i++) { + b[bp++] = (byte)((c[i] & 0xff00) >> 8); + b[bp++] = (byte)(c[i] & 0x00ff); + } + + return b; + } + + + public synchronized void monitorWrite(char cmd, char[] c) { + try { + if (monitor_out != null) { + c[0] = (char)(c.length - 1); // number of chars following + c[1] = cmd; + Log.i(TAG, String.format("sending %s", commands[cmd])); + monitor_out.write(charsToBytes(c)); + monitor_out.flush(); + } + else { + c[1] = cmd; + pending_commands.offer(c); + } + } + catch (IOException e) { + Log.i(TAG, "exception in monitorWrite(), monitor died or closed the socket", e); + + try { + monitor_out.close(); + } + catch (IOException ee) { + Log.e(TAG, "exception in monitorWrite() closing output stream", ee); + } + + monitor_out = null; + } + }; + + public void resetWatch() { + start_line = 0; + end_line = 500; + start_column = 0; + end_column = 500; + }; + + public void sendScreen(char cmd) { + char lines = (char)(buffer.height & 0x0000ffff); + char columns = (char)(buffer.width & 0x0000ffff); + char[] arg = new char[4 + lines * columns]; + arg[2] = lines; + arg[3] = columns; + int base = 4; + + for (int i = 0; i < lines; i++) { + System.arraycopy(buffer.charArray[buffer.screenBase + i], 0, arg, base, columns); + base += columns; + } + + monitorWrite(cmd, arg); + resetWatch(); + } + + public synchronized void activate() { + sendScreen(MONITOR_CMD_ACTIVATE); + cursorMoved(CURSOR_SCREEN_CHANGE); + } + + public synchronized void keyState(boolean down) { + char[] arg = new char[3]; + arg[2] = (char)((down) ? 1 : 0); + monitorWrite(MONITOR_CMD_KEYSTATE, arg); + } + + public synchronized void cursorMove(int l, int c) { + if ((to_line != l) || (to_column != c)) moved = true; + + to_line = l; + to_column = c; + } + + public void cursorMoved(char why) { + char[] arg = new char[5]; + arg[2] = (char)(to_line & 0x0000ffff); + arg[3] = (char)(to_column & 0x0000ffff); + arg[4] = why; + monitorWrite(MONITOR_CMD_CURSORMOVE, arg); + moved = false; + } + + public void testMoved() { + if (moved) cursorMoved(CURSOR_USER_KEY); + } + + public synchronized void testChanged() { + if (modified) { + modified = false; + sendScreen(MONITOR_CMD_SCREENCHANGE); + cursorMoved(CURSOR_SCREEN_CHANGE); + } + else { + if (moved) cursorMoved(CURSOR_SCREEN_CHANGE); + } + } + + public synchronized void screenChanged(int llow, int lhigh, int clow, int chigh) { + if ((start_line <= lhigh) && (llow <= end_line) && (start_column <= chigh) && (clow <= end_column)) { + modified = true; + } + } + + public synchronized void screenChanged(int l, int c) { + screenChanged(l, l, c, c); + } + + public synchronized void setField(int l, int c, char[] data, int offset) { + int len = data.length - offset; + char[] da = new char[len]; + System.arraycopy(data, offset, da, 0, len); + Log.i(TAG, String.format("setField(line %d, col %d, value %s)", l, c, new String(da))); + + if ((l > 60000) || (c > 60000)) { + l = -1; + c = -1; + } + else { + // ignore setfield outside screen boundaries + if ((l >= buffer.height) || (c + len > buffer.width)) return; + } + + buffer.setField(l, c, da); + } + + public synchronized void showUrl(char [] data, int offset) { + char[] da = new char[data.length - offset]; + System.arraycopy(data, offset, da, 0, data.length - offset); + String url = new String(da); + Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); + parent.startActivity(intent); + } + + public synchronized void getField(int l, int c, int len) { + Log.i(TAG, String.format("getField(line %d, col %d, len %d)", l, c, len)); + char[] arg2 = new char[4 + len]; + arg2[2] = (char)(l & 0x0000ffff); + arg2[3] = (char)(c & 0x0000ffff); + int base = 4; + + if ((l >= buffer.height) || (c + len > buffer.width)) { + Arrays.fill(arg2, base, base + len, ' '); + } + else { + System.arraycopy(buffer.charArray[buffer.screenBase + l], c, arg2, base, len); + } + + char[] da = new char[len]; + System.arraycopy(arg2, base, da, 0, len); + Log.i(TAG, String.format("getField value %s", new String(da))); + + monitorWrite(MONITOR_CMD_FIELDVALUE, arg2); + } + + public synchronized void screenWatch(int l, int c, int len) { + Log.i(TAG, String.format("screenWatch(line %d, col %d, len %d)", l, c, len)); + start_line = l; + end_line = l; + start_column = c; + end_column = c + len - 1; + } + + public synchronized void depress(int vk_key) { + Log.i(TAG, String.format("depress(%d)", vk_key)); + Integer x = keymap.get(new Integer(vk_key)); + + if (x != null) buffer.keyDepressed(x, ' ', 0); + } + + public synchronized void switchSession() { + Log.i(TAG, "switchSession()"); + Intent intent = new Intent(parent, ConsoleActivity.class); + intent.setAction(Intent.ACTION_VIEW); + intent.setData(host.getUri()); + parent.startActivity(intent); + } + + + public synchronized void cursorRequest() { + cursorMoved(CURSOR_REQUESTED); + } + +}