ExecTerminal.java

/*******************************************************************************
 * Copyright 2010 Alexandros Schillings
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package aws.apps.underthehood.util;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;

import android.util.Log;

public class ExecTerminal {
	final String TAG =  this.getClass().getName();

	public String exec(String cmd) {
		Log.d(TAG, "^ Executing '" + cmd + "'");
		try {
			Process process = Runtime.getRuntime().exec("sh");
			DataInputStream is = new DataInputStream(process.getInputStream());
			DataOutputStream os = new DataOutputStream(process.getOutputStream());
			os.writeBytes(cmd + "\n");
			os.writeBytes("exit\n");
			os.flush();
			os.close();

			BufferedReader reader = new BufferedReader(
					new InputStreamReader(is));
			try {
				String fullOutput = "";
				String line;
				while ((line = reader.readLine()) != null) {
					fullOutput = fullOutput + line + "\n";
				}
				return fullOutput;
			} catch (IOException e) {
				Log.e(TAG, "^ exec, IOException 1");
				e.printStackTrace();
			}

			process.waitFor();

		} catch (IOException e) {
			Log.e(TAG, "^ exec, IOException 2");
			e.printStackTrace();

		} catch (InterruptedException e) {
			Log.e(TAG, "^ exec, InterruptedException");
			e.printStackTrace();
		}
		return "";
	}

	public String execSu(String cmd) {
		Log.d(TAG, "^ Executing as SU '" + cmd + "'");
		try {
			Process process = Runtime.getRuntime().exec("su");
			DataInputStream is = new DataInputStream(process.getInputStream());
			DataOutputStream os = new DataOutputStream(process
					.getOutputStream());
			os.writeBytes(cmd + "\n");
			os.writeBytes("exit\n");
			os.flush();
			os.close();

			BufferedReader reader = new BufferedReader(new InputStreamReader(is));

			try {
				String fullOutput = "";
				String line;
				while ((line = reader.readLine()) != null) {
					fullOutput = fullOutput + line + "\n";
				}
				return fullOutput;
			} catch (IOException e) {// It seems IOException is thrown when it reaches EOF.
				e.printStackTrace();
				Log.e(TAG, "^ execSU, IOException 1");
			}
			process.waitFor();

		} catch (IOException e) {
			e.printStackTrace();
			Log.e(TAG, "^ execSU, IOException 2");
		} catch (InterruptedException e) {
			e.printStackTrace();
			Log.e(TAG, "^ execSU, InterruptedException");
		}
		return "";
	}
}