I have an app on the market that is for rooted devices only. I have tested the app extensively on a rooted and unrooted G1, MT3G and Cliq with no errors. I am receiving a number of low ratings from people with supposedly rooted devices, saying that the app tells them that they are not rooted (of course, they usually don't leave important info like what phone and what rom)
Here is the code that generates the error... can anyone see out what the problem might be?
final Button button = (Button) findViewById(R.id.******);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
String command1 = "mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system";
String command2 = "cp -f /sdcard/******* /etc/";
String command3 = "dos2unix -u /etc/*****";
String command4 = "mount -o ro,remount -t yaffs2 /dev/block/mtdblock3 /system";
execCommandLine1(command1);
execCommandLine1(command2);
execCommandLine1(command3);
execCommandLine1(command4);
}
void execCommandLine1(String command)
{
Runtime runtime = Runtime.getRuntime();
Process proc = null;
OutputStreamWriter osw = null;
try
{
proc = runtime.exec("su");
osw = new OutputStreamWriter(proc.getOutputStream());
osw.write(command);
osw.flush();
osw.close();
}
catch (IOException ex)
{
Log.e("execCommandLine()", "Command resulted in an IO Exception: " + command);
return;
}
finally
{
if (osw != null)
{
try
{
osw.close();
}
catch (IOException e){}
}
}
try
{
proc.waitFor();
}
catch (InterruptedException e){}
if (proc.exitValue() != 0)
{
**// Error Dialog that is being erroneously displayed**
}
else {
// Success Dialog
}
}
I agree with Christopher's comment: you appear to be making some assumptions:
/system is at /dev/block/mtdblock3
/dev/block/mtdblock3 is yaffs2
/etc/ is a hardlink or symlink to something on /system
mount exists
dos2unix exists
cp exists
su exists
Most of those should be testable at runtime, though the /etc/ check might be a bit tricky. Test that stuff out on the first run of your app, then do whatever makes sense:
an "sorry, this app won't work" if you detect a failure
disable the menu/button/whatever that leads to whatever is executing your code
Related
I'm writing a Uninstall App. I want to remove System App, of course my phone is Rooted. I use code from How to uninstall Android App with root permissions?.
private void delApp() {
String deleteCMD = "pm " + applicationInfo.packageName;
Process process;
try
{
process = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(process.getOutputStream());
os.writeBytes("mount -o remount,rw -t rfs /dev/stl5 /system; \n");
os.writeBytes(deleteCMD+"; \n");
os.writeBytes("mount -o remount,ro -t rfs /dev/stl5 /system; \n");
os.flush();
}
catch (IOException e)
{
e.printStackTrace();
}
}
but my phone Toast a message "... has been Granted super User Permissons" and not remove app I choosed. I try with both User App and System App but not different. What am I missing ? How to remove System App with Root permissons and How to remove App without this Dialog (fast remove and automaticaly).
EDIT
I solved my problem using this code, hope it help someone.
Process process = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(process.getOutputStream());
os.writeBytes("mount -o rw,remount /system\n");
os.writeBytes("rm -r "+ "[SourceDir]" + "\n");
os.writeBytes("mount -o ro,remount /system\n");
os.flush();
os.close();
process.waitFor();
note: [SourceDir] is your system app directory
In my application I'm doing:
try {
String[] cmd = {"su", "-c", "\"ls /data/\""}; //to debug, will be cp /src /dest
ProcessBuilder builder = new ProcessBuilder(cmd);
builder.redirectErrorStream(true);
Process process = builder.start();
InputStream is = process.getInputStream();
Log.e("copy", is.toString());
Log.e("copy", convertStreamToString(is));
try {
process.waitFor();
} catch (InterruptedException e) {
e.printStackTrace();
}
} catch (IOException e1) {
e1.printStackTrace();
}
The app is installed in /system/app/ and running with root permissions.
I see SuperSu's overlay that it's granted permissions for the operation.
With the cp /src /dest in place of ls command above, it doesn't copy, so debugging with ls, I get:
tmp-mksh: ls /data: not found
Why is this, and how can I fix it?
NB: This is the same issue as this question, except that was resolved by adding external write permissions - I should note that both paths in my command are in /data/...
Okay, Im very new to android programming, and im making a root app to push a specific file to /system/framework with a button
how can i accomplish this? i tried the command style and none are working
There are a number of steps you need to take to be able to do this.
First (of course) the device needs to be rooted. You can check this in a number of ways.
The following code will check if the "su" command returns a command not found error (su binary exists) AND that a super user app is installed to grant the permissions after you request them.
private boolean isDeviceRooted() {
// check for SU command in shell
if ((new ExecShell().executeCommand(ExecShell.SHELL_COMMAND.su_check) != null) && (appInstalled("eu.chainfire.supersu.nonag") || appInstalled("eu.chainfire.supersu") || appInstalled("com.noshufou.android.su") || appInstalled("com.koushikdutta.superuser"))) {
Log.i(TAG, "Device Rooted");
return true;
}
// check for SU application installed
if (appInstalled("eu.chainfire.supersu.nonag") || appInstalled("eu.chainfire.supersu") || appInstalled("com.noshufou.android.su") || appInstalled("com.koushikdutta.superuser")) {
Log.i(TAG, "Device Rooted");
return true;
}
Log.i(TAG, "Device Not Rooted");
return false;
}
private boolean appInstalled(String uri) {
PackageManager pm = getPackageManager();
boolean app_installed = false;
try {
pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
app_installed = true;
} catch (PackageManager.NameNotFoundException e) {
app_installed = false;
}
return app_installed;
}
If this code returns false you could set a flag or display and error, else continue.
Then, once you know the device is rooted, you want to execute the necessary root commands to do what you need.
The following code takes as input String[] of commands, and executes them sequentially as root.
public boolean RunAsRoot(String[] cmds) {
Process p;
try {
p = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(p.getOutputStream());
try {
for (String tmpCmd : cmds) {
os.writeBytes(tmpCmd + "\n");
}
os.writeBytes("exit\n");
os.flush();
return true;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return false;
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return false;
}
}
In your case you will first want to mount /system as rw. There is lots of information on the web to help you find the command you want but it will look something like
mount -o remount rw /system mount -o remount rw /system
You then want to move the file you want using either mv or cp.
An example of the use of the root commands would be
String[] cmds = {"mount -o remount rw /system mount -o remount rw /system", "cp /sdcard/myfile /system/framework/myfile"};
if(!RunAsRoot(cmds)){
//Commands failed to run, show an error/retry
}
This covers the "hard" bit which is the root functionality.
An easy tutorial for the button can be found here.
Program flow could be
onCreate(){
checkIsRooted();
Button x = (Button) findViewById(R.id.x);
x.setOnClickListener(onClickListener());
}
onClickListener(){
onClick(){
String[] cmds = {...};
if(!runAsRoot(cmds))
AlertDialog.Builder.makeText(...).show();
}
}
NOTE, THIS IS PSEUDO CODE, YOU CAN'T COPY AND PASTE THIS CODE TO MAKE IT WORK, YOU NEED TO DO IT PROPERLY YOURSELF!
Please help me to find out solution for this, I Know there are so many questions and duplicates about this same but here i describe whole things which i tried.
I have one android device where its installed 4.0 version of android.
I want to shutdown this device using my one demo application.
1) Demo application is signed by platform keys which are used in built in file system.
2) Device is already rooted as its development board and i have all permissions on this.
Application contains Following things
1) Application is system application
2) Application signed by platform keys which are used in built in file system.
For make automation easier, I did import the key/cert pair into my java keystore file, with the this keytool-importkeypair and use eclipse for signing.
Used command is mentioned below.
Commad : keytool-importkeypair -k ~/Desktop/myown.keystore -p android -pk8 platform.pk8 -cert platform.x509.pem -alias platform
I used following code for reboot but i never make success in this .I read So many questions and answers on stackoverflow but they all said you require
1) root access of device
2) signed apk with any one keys which are available on `build/target/product/security/`
3) Given Proper permission in AndroidManifest.xml file.
Am i right in alomg points?
Application code :
First Try
public static void shutdown2() {
Runtime runtime = Runtime.getRuntime();
Process proc = null;
OutputStreamWriter osw = null;
String command = "/system/bin/reboot -p";
try { // Run Script
proc = runtime.exec("/system/xbin/su");
osw = new OutputStreamWriter(proc.getOutputStream());
osw.write(command);
osw.flush();
osw.close();
} catch (IOException ex) {
ex.printStackTrace();
} finally {
if (osw != null) {
try {
osw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
try {
if (proc != null)
proc.waitFor();
} catch (InterruptedException e) {
e.printStackTrace();
}
if (proc.exitValue() != 0) {
}
}
Second Try :
private void shutdown3() {
try {
String[] cmd = { "/system/bin/sh","su","reboot -p"};
Process proc = Runtime.getRuntime().exec(cmd);
proc.waitFor();
} catch (Exception ex) {
Log.i("TAG", "Could not reboot 3 ", ex);
}
}
3rd Try :
private void shutdown() {
try {
Process proc = Runtime.getRuntime().exec(
new String[] { "/system/bin/su", "-c",
"/system/bin/reboot -p" });
proc.waitFor();
} catch (Exception ex) {
Log.i("TAG", "Could not reboot 1 ", ex);
}
}
In 3rd method I also tried with "/system/bin/su"
The below code worked for me
Process process = Runtime.getRuntime()
.exec(new String[]{ "su", "-c", "busybox poweroff -f"});
process.waitFor();
A much better solution is to run:
su -c am start -a android.intent.action.ACTION_REQUEST_SHUTDOWN
You can use a Process for this.
I want to make my app become system app programmatically. I managed to do it in my phone with root and busybox. any idea how achieve this without busybox?
Runtime.getRuntime().exec(new String[] { "su", "-c", "mount -o rw,remount -t yaffs2 /system; " +
"cp `ls /data/app/xxx*` /system/app; " +
"rm /data/app/xxx*; " +
"mount -o ro,remount -t yaffs2 /system; " +
"reboot" });
Beside this, I also faced another issue. If i switch back my app from system app > user app and reboot. Android system still recognize my app as system app even though the app already reside in /data/app.
I use code below to check whether my app is system app:
android.content.pm.ApplicationInfo.FLAG_SYSTEM
Refer the below code to move user app apk into system app apk in rooting device with the help of RootTools method .
PackageInfo paramPackageInfo = null;
try {
paramPackageInfo = this.getPackageManager().getPackageInfo(
this.getPackageName(), 0);
} catch (NameNotFoundException e) {
e.printStackTrace();
}
ApplicationInfo localApplicationInfo = paramPackageInfo.applicationInfo;
String str1 = "/system/app/" + localApplicationInfo.packageName
+ ".apk";
String str2 = "busybox mv " + localApplicationInfo.sourceDir + " "
+ str1;
RootTools.remount("/system", "rw");
RootTools.remount("/mnt", "rw");
CommandCapture command = new CommandCapture(0, str2,
"busybox chmod 644 " + str1);
try {
RootTools.getShell(true).add(command).waitForFinish();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (TimeoutException e) {
e.printStackTrace();
} catch (RootDeniedException e) {
e.printStackTrace();
}
RootTools.remount("/system", "ro");
RootTools.remount("/mnt", "ro");
Necessary of Busybox and superuser app while use the above code in your application.