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/*
* Copyright (C) 2007 Kenny Root (kenny at the-b.org)
*
* This file is part of Connectbot.
*
* Connectbot is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Connectbot is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Connectbot. If not, see <http://www.gnu.org/licenses/>.
*/
package org.theb.ssh;
import java.io.IOException;
import java.io.OutputStream;
import org.theb.provider.HostDb;
import com.trilead.ssh2.ConnectionMonitor;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.os.Handler;
import android.text.method.KeyCharacterMap;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.Window;
public class SecureShell extends Activity implements FeedbackUI, ConnectionMonitor {
private ConnectionThread mConn;
// Activities we support.
static final int PASSWORD_REQUEST = 0;
// Database projection indices.
private static final int HOSTNAME_INDEX = 1;
private static final int USERNAME_INDEX = 2;
private static final int PORT_INDEX = 3;
private static final String[] PROJECTION = new String[] {
HostDb.Hosts._ID, // 0
HostDb.Hosts.HOSTNAME, // 1
HostDb.Hosts.USERNAME, // 2
HostDb.Hosts.PORT, // 3
};
private Cursor mCursor;
// Map to convert from keyboard presses to actual characters.
private KeyCharacterMap mKMap;
// Terminal window
private Terminal mTerminal;
// We change the meta state when the user presses the center button.
private boolean mMetaState = false;
// Store the username, hostname, and port from the database.
private String mHostname;
private String mUsername;
private int mPort;
// The toggle for the original thread to release the indeterminate waiting graphic.
private ProgressDialog progress;
private boolean mIsWaiting;
private String mWaitingTitle;
private String mWaitingMessage;
final Handler mHandler = new Handler();
// Tell the user why we disconnected.
private String mDisconnectReason;
@Override
public void onCreate(Bundle savedValues) {
super.onCreate(savedValues);
requestWindowFeature(Window.FEATURE_PROGRESS);
mTerminal = new JTATerminalView(this);
// TODO: implement scroll bar on right.
setContentView((View)mTerminal);
Log.d("SSH", "using URI " + getIntent().getData().toString());
mCursor = managedQuery(getIntent().getData(), PROJECTION, null, null);
mCursor.first();
mHostname = mCursor.getString(HOSTNAME_INDEX);
mUsername = mCursor.getString(USERNAME_INDEX);
mPort = mCursor.getInt(PORT_INDEX);
String title = "SSH: " + mUsername + "@" + mHostname;
if (mPort != 22)
title += Integer.toString(mPort);
this.setTitle(title);
mConn = new TrileadConnectionThread(this, mTerminal, mHostname, mUsername, mPort);
mKMap = KeyCharacterMap.load(KeyCharacterMap.BUILT_IN_KEYBOARD);
Log.d("SSH", "Starting new ConnectionThread");
mConn.start();
}
public void setWaiting(boolean isWaiting, String title, String message) {
mIsWaiting = isWaiting;
mWaitingTitle = title;
mWaitingMessage = message;
mHandler.post(mUpdateWaiting);
}
final Runnable mUpdateWaiting = new Runnable() {
public void run() {
if (mIsWaiting) {
if (progress == null)
progress = ProgressDialog.show(SecureShell.this, mWaitingTitle, mWaitingMessage, true, false);
else {
progress.setTitle(mWaitingTitle);
progress.setMessage(mWaitingMessage);
}
} else {
if (progress != null) {
progress.dismiss();
progress = null;
}
}
}
};
public void askPassword() {
Intent intent = new Intent(this, PasswordDialog.class);
this.startSubActivity(intent, PASSWORD_REQUEST);
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
String data, Bundle extras)
{
if (requestCode == PASSWORD_REQUEST) {
mConn.setPassword(data);
}
}
@Override
public void onDestroy() {
super.onDestroy();
mConn.finish();
mConn = null;
finish();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent msg) {
final OutputStream out = mConn.getWriter();
if (out != null) {
try {
if (mKMap.isPrintingKey(keyCode)
|| keyCode == KeyEvent.KEYCODE_SPACE) {
int c = mKMap.get(keyCode, msg.getMetaState());
if (mMetaState) {
// Support CTRL-A through CTRL-Z
if (c >= 0x61 && c <= 0x79)
c -= 0x60;
else if (c >= 0x40 && c <= 0x59)
c -= 0x39;
mMetaState = false;
}
out.write(c);
} else if (keyCode == KeyEvent.KEYCODE_DEL) {
out.write(0x08); // CTRL-H
} else if (keyCode == KeyEvent.KEYCODE_NEWLINE
|| keyCode == KeyEvent.KEYCODE_DPAD_LEFT
|| keyCode == KeyEvent.KEYCODE_DPAD_UP
|| keyCode == KeyEvent.KEYCODE_DPAD_DOWN
|| keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
byte[] output = mTerminal.getKeyCode(keyCode, msg.getMetaState());
if (output != null)
out.write(output);
} else if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
if (mMetaState) {
out.write(0x1B); // ESCAPE
mMetaState = false;
} else {
mMetaState = true;
}
} else {
// This is not something we handle.
return super.onKeyDown(keyCode, msg);
}
return true;
} catch (IOException e) {
Log.e("SSH", "Can't write to stdout: "+ e.getMessage());
}
}
return super.onKeyDown(keyCode, msg);
}
final Runnable mDisconnectAlert = new Runnable() {
public void run() {
if (SecureShell.this.isFinishing())
return;
AlertDialog d = AlertDialog.show(SecureShell.this,
"Connection Lost", mDisconnectReason, "Ok", false);
d.show();
// TODO: Return to previous activity if connection fails.
}
};
public void connectionLost(Throwable reason) {
Log.d("SSH", "Connection ended.");
mDisconnectReason = reason.getMessage();
mHandler.post(mDisconnectAlert);
}
}
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