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/*
ConnectBot: simple, powerful, open-source SSH client for Android
Copyright (C) 2007-2008 Kenny Root, Jeffrey Sharkey
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.connectbot.transport;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.Map;
import org.connectbot.R;
import org.connectbot.bean.HostBean;
import org.connectbot.service.TerminalBridge;
import org.connectbot.service.TerminalManager;
import org.connectbot.util.HostDatabase;
import android.net.Uri;
import android.util.Log;
/**
* @author Kenny Root
*
*/
public class Local extends AbsTransport {
private static final String TAG = "ConnectBot.Local";
private static final String PROTOCOL = "local";
private static final String DEFAULT_URI = "local:#Local";
private static Method mExec_openSubprocess;
private static Method mExec_waitFor;
private static Method mExec_setPtyWindowSize;
private FileDescriptor shellFd;
private FileInputStream is;
private FileOutputStream os;
static {
initPrivateAPI();
}
private static void initPrivateAPI() {
try {
Class<?> mExec = Class.forName("android.os.Exec");
mExec_openSubprocess = mExec.getMethod("createSubprocess",
String.class, String.class, String.class, int[].class);
mExec_waitFor = mExec.getMethod("waitFor", int.class);
mExec_setPtyWindowSize = mExec.getMethod("setPtyWindowSize",
FileDescriptor.class, int.class, int.class, int.class, int.class);
} catch (NoSuchMethodException e) {
// Give up
} catch (ClassNotFoundException e) {
// Give up
}
}
/**
*
*/
public Local() {
}
/**
* @param host
* @param bridge
* @param manager
*/
public Local(HostBean host, TerminalBridge bridge, TerminalManager manager) {
super(host, bridge, manager);
}
public static String getProtocolName() {
return PROTOCOL;
}
@Override
public void close() {
try {
os.close();
is.close();
os = null;
is = null;
} catch (IOException e) {
Log.e(TAG, "Couldn't close shell", e);
}
}
@Override
public void connect() {
int[] pids = new int[1];
try {
shellFd = (FileDescriptor) mExec_openSubprocess.invoke(null,
"/system/bin/sh", "-", null, pids);
} catch (Exception e) {
bridge.outputLine(manager.res.getString(R.string.local_shell_unavailable));
return;
}
final int shellPid = pids[0];
Runnable exitWatcher = new Runnable() {
public void run() {
try {
mExec_waitFor.invoke(null, shellPid);
} catch (Exception e) {
Log.e(TAG, "Couldn't wait for shell exit", e);
}
bridge.dispatchDisconnect(false);
}
};
Thread exitWatcherThread = new Thread(exitWatcher);
exitWatcherThread.setName("LocalExitWatcher");
exitWatcherThread.start();
is = new FileInputStream(shellFd);
os = new FileOutputStream(shellFd);
bridge.onConnected();
}
@Override
public void flush() throws IOException {
os.flush();
}
@Override
public String getDefaultNickname(String username, String hostname, int port) {
return DEFAULT_URI;
}
@Override
public int getDefaultPort() {
return 0;
}
@Override
public boolean isConnected() {
return is != null && os != null;
}
@Override
public boolean isSessionOpen() {
return is != null && os != null;
}
@Override
public int read(byte[] buffer, int start, int len) throws IOException {
if (is == null) {
bridge.dispatchDisconnect(false);
throw new IOException("session closed");
}
return is.read(buffer, start, len);
}
@Override
public void setDimensions(int columns, int rows, int width, int height) {
try {
mExec_setPtyWindowSize.invoke(null, shellFd, columns, rows, width, height);
} catch (Exception e) {
Log.e(TAG, "Couldn't resize pty", e);
}
}
@Override
public void write(byte[] buffer) throws IOException {
if (os != null)
os.write(buffer);
}
@Override
public void write(int c) throws IOException {
if (os != null)
os.write(c);
}
public static Uri getUri(String input) {
return Uri.parse(DEFAULT_URI);
}
@Override
public HostBean createHost(Uri uri) {
HostBean host = new HostBean();
host.setProtocol(PROTOCOL);
host.setNickname(uri.getFragment());
return host;
}
@Override
public void getSelectionArgs(Uri uri, Map<String, String> selection) {
selection.put(HostDatabase.FIELD_HOST_PROTOCOL, PROTOCOL);
selection.put(HostDatabase.FIELD_HOST_NICKNAME, uri.getFragment());
}
}
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