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/**
* Copyright (c) 2019 LEAP Encryption Access Project and contributers
*
* 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 se.leap.bitmaskclient.utils;
import androidx.annotation.WorkerThread;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
public class Cmd {
private static final String TAG = Cmd.class.getSimpleName();
@WorkerThread
public static int runBlockingCmd(String[] cmds, StringBuilder log) throws Exception {
return runCmd(cmds, log, true);
}
@WorkerThread
private static int runCmd(String[] cmds, StringBuilder log,
boolean waitFor) throws Exception {
int exitCode = -1;
Process proc = Runtime.getRuntime().exec("sh");
OutputStreamWriter out = new OutputStreamWriter(proc.getOutputStream());
try {
for (String cmd : cmds) {
out.write(cmd);
out.write("\n");
}
out.flush();
out.write("exit\n");
out.flush();
} catch (IOException e) {
e.printStackTrace();
} finally {
out.close();
}
if (waitFor) {
// Consume the "stdout"
InputStreamReader reader = new InputStreamReader(proc.getInputStream());
readToLogString(reader, log);
// Consume the "stderr"
reader = new InputStreamReader(proc.getErrorStream());
readToLogString(reader, log);
try {
exitCode = proc.waitFor();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
return exitCode;
}
private static void readToLogString(InputStreamReader reader, StringBuilder log) throws IOException {
final char buf[] = new char[10];
int read = 0;
try {
while ((read = reader.read(buf)) != -1) {
if (log != null)
log.append(buf, 0, read);
}
} catch (IOException e) {
reader.close();
throw new IOException(e);
}
reader.close();
}
}
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