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POWriting android app that executes linux commands
 

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  1. POWriting android app that executes linux commands
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    <p>I have an compiled executable that is supposed to copy itself from the res folder, and into the /data/data/package-name/ folder, and change the permissions, and then execute. Every step completes all the way to the end. The output stream seems to be writing, etc. Except when I go check the file system, nothing has been done. I first tried with 'sh' then with 'su' (I have a rooted Cyanogen rom).</p> <p>Here is the code:</p> <pre><code>public class UnexecutableActivity extends Activity { String executablePath; TextView outputView; private UnexecutableTask mUnexecutableTask; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); executablePath = getIntent().getData().getPath(); System.out.println(executablePath); setContentView(R.layout.main); outputView = (TextView)findViewById(R.id.outputView); try { Process process = Runtime.getRuntime().exec("su"); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } Runnable runexecutable = new Runnable(){ @Override public void run() { mUnexecutableTask = new UnexecutableTask(); mUnexecutableTask.execute(""); } }; runOnUiThread(runexecutable); } private class UnexecutableTask extends AsyncTask&lt;String, String, String&gt; { public UnexecutableTask() { super(); } @Override protected void onPostExecute(String result) { super.onPostExecute(result); outputView.setText(outputView.getText() + "\n" + executablePath + "converted to "); } @Override protected void onPreExecute() { super.onPreExecute(); outputView.setText("About to un-executable " + executablePath + " ..."); } @Override protected void onProgressUpdate(String... values) { super.onProgressUpdate(values); outputView.setText(outputView.getText() + "\n" + values[0]); } @Override protected String doInBackground(String... params) { String bashEscapedPath = executablePath.replace(" ", "\\ "); try{ String[] commands; publishProgress("Loading unexecutable..."); InputStream unexecutableInputStream = getAssets().open("unexecutable"); FileOutputStream fos = new FileOutputStream(getDir("", MODE_WORLD_WRITEABLE) + "/unexecutable"); byte[] tmp = new byte[2048]; int l; while ((l = unexecutableInputStream.read(tmp)) != -1) { fos.write(tmp, 0, l); } fos.flush(); fos.close(); unexecutableInputStream.close(); publishProgress("Changing file permissions..."); commands = new String[] {"/system/bin/chmod","744", getDir("", MODE_WORLD_WRITEABLE) + "/unexecutable"}; Process process = Runtime.getRuntime().exec("su"); StringBuffer res = new StringBuffer(); DataOutputStream os = new DataOutputStream(process.getOutputStream()); DataInputStream osRes = new DataInputStream(new BufferedInputStream(process.getInputStream())); for (String single : commands) { os.writeBytes(single + "\n"); os.flush(); //publishProgress(String.valueOf(osRes.readByte())); } os.writeBytes("exit\n"); os.flush(); process.waitFor(); publishProgress("Performing un-executable..."); commands = new String[] {"/data/data/" + getPackageName() + "/unexecutable", bashEscapedPath}; process = Runtime.getRuntime().exec("su"); res = new StringBuffer(); os = new DataOutputStream(process.getOutputStream()); osRes = new DataInputStream(process.getInputStream()); for (String single : commands) { os.writeBytes(single + "\n"); os.flush(); } os.writeBytes("exit\n"); os.flush(); publishProgress("Finishing..."); process.waitFor(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } return "Success"; } } </code></pre> <p>If anyone could fix this up for me, (and hopefully use sh!) I would be eternally grateful.</p>
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    1. USimz -- Ivan Zakharyaschev
    1. USAymon Fournier
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    1. COI am not so versed with pastebin - could you make that a link please.
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      1. USMartin
    2. COwhy dont you just put the code here? SO supports syntax highlighting and such.
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      1. USRyan Conrad
    3. COwhat version of CM are you running because chmod doesn't exist in my /system/bin. its in /system/xbin/ - im running 5.0.8
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