Related
I am creating a little app that will let a user read what's in a certain textfile in /data/local, edit it, and then save it. I have gotten everything to work by using some tutorials here and there, but there's still something not working.
Root access has been achieved, and writing/reading the file is done too, but when pressing the "Write" button, I get a toast saying "open failed: EACCES (Permission denied)". Google unfortunately didn't help me much on this one. Also, I am using the WRITE_EXTERNAL_STORAGE permission.
Code:
Code:
package bas.sie.hai;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.actionbarsherlock.app.SherlockActivity;
public class DataLocalActivity extends SherlockActivity {
EditText txtData;
Button btnReadSDFile;
Button btnWriteSDFile;
Button btnReadSkipFile;
Button btnWriteSkipFile;
Button btnClearScreen;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Process p;
try {
// Preform su to get root privledges
p = Runtime.getRuntime().exec("su");
// Attempt to write a file to a root-only
DataOutputStream os = new DataOutputStream(p.getOutputStream());
os.writeBytes("echo \"Do I have root?\" >/system/sd/temporary.txt\n");
// Close the terminal
os.writeBytes("exit\n");
os.flush();
try {
p.waitFor();
if (p.exitValue() != 255) {
// TODO Code to run on success
Toast.makeText(this, "root", Toast.LENGTH_LONG);
}
else {
// TODO Code to run on unsuccessful
Toast.makeText(this, "No root", Toast.LENGTH_LONG);
}
} catch (InterruptedException e) {
// TODO Code to run in interrupted exception
Toast.makeText(this, "No root", Toast.LENGTH_LONG);
}
} catch (IOException e) {
// TODO Code to run in input/output exception
Toast.makeText(this, "NO root", Toast.LENGTH_LONG);
}
if(!Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())){
Toast.makeText(this, "External SD card not mounted", Toast.LENGTH_LONG).show();
}
txtData = (EditText) findViewById(R.id.txtData);
btnReadSDFile = (Button) findViewById(R.id.btnReadSDFile);
btnReadSDFile.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
try {
File myFile = new File("/data/local/move_cache.txt");
FileInputStream fIn = new FileInputStream(myFile);
BufferedReader myReader = new BufferedReader(
new InputStreamReader(fIn));
String aDataRow = "";
String aBuffer = "";
while ((aDataRow = myReader.readLine()) != null) {
aBuffer += aDataRow + "\n";
}
txtData.setText(aBuffer);
myReader.close();
Toast.makeText(getBaseContext(),
"Done reading from SD: 'move_cache.txt'",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
btnWriteSDFile = (Button) findViewById(R.id.btnWriteSDFile);
btnWriteSDFile.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
try {
File myFile = new File("/data/local/move_cache.txt");
myFile.createNewFile();
FileOutputStream fOut = new FileOutputStream(myFile);
OutputStreamWriter myOutWriter = new OutputStreamWriter(
fOut);
myOutWriter.append(txtData.getText());
myOutWriter.close();
fOut.close();
Toast.makeText(getBaseContext(),
"Done writing to SD: 'move_cache.txt'",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
btnReadSkipFile = (Button) findViewById(R.id.btnReadSkipFile);
btnReadSkipFile.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
try {
File myFile = new File("/data/local/skip_apps.txt");
FileInputStream fIn = new FileInputStream(myFile);
BufferedReader myReader = new BufferedReader(
new InputStreamReader(fIn));
String aDataRow = "";
String aBuffer = "";
while ((aDataRow = myReader.readLine()) != null) {
aBuffer += aDataRow + "\n";
}
txtData.setText(aBuffer);
myReader.close();
Toast.makeText(getBaseContext(),
"Done reading from SD: 'skip_apps.txt'",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
btnWriteSkipFile = (Button) findViewById(R.id.btnWriteSkipFile);
btnWriteSkipFile.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
try {
File myFile = new File("/data/local/skip_apps.txt");
myFile.createNewFile();
FileOutputStream fOut = new FileOutputStream(myFile);
OutputStreamWriter myOutWriter = new OutputStreamWriter(
fOut);
myOutWriter.append(txtData.getText());
myOutWriter.close();
fOut.close();
Toast.makeText(getBaseContext(),
"Done writing to SD: 'skip_apps.txt'",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
btnClearScreen = (Button) findViewById(R.id.btnClearScreen);
btnClearScreen.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// clear text box
txtData.setText("");
}
});
}// onCreate
}
Thanks in advance,
Bas
Dooder
1. Chaper 8. Have mercy on yourself.
2. coloredlogcat.py
3. why not
Code:
e.printStackTrace()
but
Code:
Toast.LENGTH_SHORT
is beyond me
4.
Code:
android.permissions.WRITE_EXTERNAL_STORAGE
does not equal permissions to write to
Code:
/data/local
5.
Google unfortunately didn't help me much on this one
Click to expand...
Click to collapse
Moment of honesty. G-FU sucks or you just gave up?
I am an a-hole for a reason here. All you need to know is out there. No one else will hit you harder on the head with a RTFM board than a coder.
el_bhm said:
Dooder
1. Chaper 8. Have mercy on yourself.
2. coloredlogcat.py
3. why not
Code:
e.printStackTrace()
but
Code:
Toast.LENGTH_SHORT
is beyond me
4.
Code:
android.permissions.WRITE_EXTERNAL_STORAGE
does not equal permissions to write to
Code:
/data/local
5.
Moment of honesty. G-FU sucks or you just gave up?
I am an a-hole for a reason here. All you need to know is out there. No one else will hit you harder on the head with a RTFM board than a coder.
Click to expand...
Click to collapse
The code is mostly from a tutorial, with a few edits. Why use stackTrace on a test? Also, I test on the device for reliability and root access. It's easier to see a Toast there, so didn't remove it.
About the Chapter 8: Yes, onClickListener is not the best way (skimmed over it, it's 1:26 AM here), but here too: optimizations later.
About Google: I Googled, didn't find anything that really could help me along so that I understood, asked in three other places. SO was someone who didn't reply later on, Google Groups said my permission was wrong, as I said WRITE_TO_EXTERNAL_STORAGE. I corrected that, saying I had the right permission but I wrote down the wrong one (hastily. Stupid, I know...), and here, on XDA, you're the only post yet. I have waited between posts to post it on all those boards, as I'm not an a**hole.
If any more information is needed, just tell me.
Bas
EDIT: Missed a bit. About the writing: I know now, it's just that I have no idea how to proceed from root access to writing there. And I do hope to learn how to do it.
1. You'd rather want to write into
Code:
/data/data/[package]/
Is there any particular reason you want to write directly to local? Some "system wide" app? From code I understand this is some tabbed app(?). Or is it just test for root?
Unless you have somewhat extensive knowledge of Linux and programming, don't go into root access. Make yourself a favour and get as much knowledge of objective programming first. It seems it was inspired by Outler doing root in part two. He's doing ADK in part 3. These are not easy things.
2. Are you sure you are writing anything? With this code I am getting nowhere actually.
I have not written anything with root (main reason it caught my attention). My best guess is though, permissions are not escalated for objects you are creating while setting up listeners for buttons.
From brief reading of the code and documentation it seems that you are escalating permissions for Process p which you works in conjunction with DataOutputStream. While setting up listeners you are not doing anything with p anymore.
My best guess permissions escalation would apply to the whole package, but as I see it, it does not happen.
EDIT: Besides, keep in mind you are writing a file via echoing through shell. Which is not equivalent of writing through instances of classes in onClickListeners
3. As to why printStackTrace()
Unless you are running Windows(which for Android development I really feel you should not) with coloredlogcat.py you'll have much more comprehensive output to troubleshoot the app. Line where problem occurs. Where it originates, where it goes, etc.
There should be some interpreter of python for Windows, but I don't know how the script will behave though.
4. Inserting logcat output is always helpful.
Providing the layout is always helpful.
el_bhm said:
1. You'd rather want to write into
Code:
/data/data/[package]/
Is there any particular reason you want to write directly to local? Some "system wide" app? From code I understand this is some tabbed app(?). Or is it just test for root?
Unless you have somewhat extensive knowledge of Linux and programming, don't go into root access. Make yourself a favour and get as much knowledge of objective programming first. It seems it was inspired by Outler doing root in part two. He's doing ADK in part 3. These are not easy things.
2. Are you sure you are writing anything? With this code I am getting nowhere actually.
I have not written anything with root (main reason it caught my attention). My best guess is though, permissions are not escalated for objects you are creating while setting up listeners for buttons.
From brief reading of the code and documentation it seems that you are escalating permissions for Process p which you works in conjunction with DataOutputStream. While setting up listeners you are not doing anything with p anymore.
My best guess permissions escalation would apply to the whole package, but as I see it, it does not happen.
EDIT: Besides, keep in mind you are writing a file via echoing through shell. Which is not equivalent of writing through instances of classes in onClickListeners
3. As to why printStackTrace()
Unless you are running Windows(which for Android development I really feel you should not) with coloredlogcat.py you'll have much more comprehensive output to troubleshoot the app. Line where problem occurs. Where it originates, where it goes, etc.
There should be some interpreter of python for Windows, but I don't know how the script will behave though.
4. Inserting logcat output is always helpful.
Providing the layout is always helpful.
Click to expand...
Click to collapse
The files I'm writing are supposed to be in /data/local. Writing anywhere else would obviously kind of defeat the purpose.
I don't really have knowledge of Linux, didn't know you had to to be able to write a file. On the other hand, I had basically no knowledge of Android when I started writing my first app, and that worked out quite well, if I do say so myself.
About the permissions for the writing: I think you are right about that. I simply followed a tutorial, added SU permission check, and changed the path. Then tried to get that working.
I am running Windows. I do have Ubuntu on a bootable USB and on my HDD, but on the stick it has a low res and doesn't save any configs (which is not that weird), and on my HDD it suddenly fails to boot, and WUBI won't let me uninstall...
Plus, too much fiddling. Why is it so hard to get Flash installed, for God's sake?
About the LogCat output: I'm not really one to hook my phone up to my PC for that, unless no other solution is possible. Not because I'm lazy, but because my PC generally takes a couple of minutes to recognize the phone, open Explorer, etc. when I am doing a couple of other things.
I guess I'll just give up. Do you have any sites/places where I can gain some valuable knowledge about this?
Bas
About that permission check. Well, it passes the test. Thing is, there is no
Code:
/system/sd/temporary.txt
after I drop to adb shell.
Is that path the one you had set? IIRC Samsung does something funky with internal/external memory mounts in their devices. Is that path valid at all?
I'm guessing echo fails but passes the su test. So permissions are good, it seems.
Theoretically you can try parsing contents you need to that command you are basically executing. If there is a file in
Code:
/system/sd/
You could write file you need as temps wherever you have rights, then gain permissions and copy the contents via
Code:
cat [path_to_temp_file] > /data/local/file
Going offtopic.
Never. Ever use WUBI. Seriously. Just read about install process. If it fails on normal CD, download alternate. A bit more daunting but still should be manageable. Or get other distro like Mint.
It's enough to copy file to
Code:
~/.mozilla/plugins
. FF and Opera should easily use it.
Or just install
Code:
ubuntu-restricte-extras
. It should have flash.
You can also get to your phone over wifi. Just get adbWireless from market.
Knowledge? On what?
Programming? Read documentation of android. Many tutorials. Really easy to read (compared to other OS docs), extensively described.
Stackoverflow
Get any O'reily books.
Android? See above.
Linux? Stop expecting from any distro to behave like Windows and use it as you would know nothing about PC. You'll save yourself much time and frustration.
webup8, omgubuntu, planet-ubuntu. Enough there to start.
el_bhm said:
About that permission check. Well, it passes the test. Thing is, there is no
Code:
/system/sd/temporary.txt
after I drop to adb shell.
Is that path the one you had set? IIRC Samsung does something funky with internal/external memory mounts in their devices. Is that path valid at all?
I'm guessing echo fails but passes the su test. So permissions are good, it seems.
Theoretically you can try parsing contents you need to that command you are basically executing. If there is a file in
Code:
/system/sd/
You could write file you need as temps wherever you have rights, then gain permissions and copy the contents via
Code:
cat [path_to_temp_file] > /data/local/file
Going offtopic.
Never. Ever use WUBI. Seriously. Just read about install process. If it fails on normal CD, download alternate. A bit more daunting but still should be manageable. Or get other distro like Mint.
It's enough to copy file to
Code:
~/.mozilla/plugins
. FF and Opera should easily use it.
Or just install
Code:
ubuntu-restricte-extras
. It should have flash.
You can also get to your phone over wifi. Just get adbWireless from market.
Knowledge? On what?
Programming? Read documentation of android. Many tutorials. Really easy to read (compared to other OS docs), extensively described.
Stackoverflow
Get any O'reily books.
Android? See above.
Linux? Stop expecting from any distro to behave like Windows and use it as you would know nothing about PC. You'll save yourself much time and frustration.
webup8, omgubuntu, planet-ubuntu. Enough there to start.
Click to expand...
Click to collapse
Well, this is intended for AOSP ROMs, so I was thinking that there shouldn't be any problem in trying to write a file in that directory. But yes, Samsung does do some weird things...
About the copying and then moving from there: Might be a good idea if I can figure it out. However, do you think that will suddenly work?
The install at first was planned to be from the bootable stick I have, but when I read about WUBI, it seemed so easy. Easy to deinstall Ubuntu, too. Anyhow, I think a friend kind of borked it not too long ago. Pressed the wrong button somewhere, might have slightly affected the MBR (Windows boot animation is also gone now, back to Vista ).
Could you explain a bit more about the Flash install? It seemed (and truly was) so tedious at the time for something that was still slow and laggy... In my experience, don't get me wrong.
I have used AirDroid for example for reaching my phone, good suggestion there.
On the topic of developing (circling back around ), I will be looking into your suggestions. I do use Google and tutorials a lot, and SO has been quite a good help in that. Also, asking people to help personally (GTalk, for example, or PM on a forum), has got me quite a long way.
And using Ubuntu like I know nothing: It was quite different . I noticed that almost all of my knowledge was rendered useless in a matter of minutes haha. Bad thing is I did still think I knew, I guess. Led to frustration over it being so annoying. I guess it takes a lot of getting used to.
If that "temporary.txt" file is created, I don't see why it should fail since it passes the Root check.
instead of
Code:
cat
you may as well use
Code:
cp
which is basically command for copy.
About Flash (on which even Adobe is dropping a ball since they have balls to finally admit it's a joke anyway) you can read here.
https://help.ubuntu.com/community/RestrictedFormats
Alternate version of installer never failed me so far.
el_bhm said:
If that "temporary.txt" file is created, I don't see why it should fail since it passes the Root check.
instead of
Code:
cat
you may as well use
Code:
cp
which is basically command for copy.
About Flash (on which even Adobe is dropping a ball since they have balls to finally admit it's a joke anyway) you can read here.
https://help.ubuntu.com/community/RestrictedFormats
Alternate version of installer never failed me so far.
Click to expand...
Click to collapse
I'll take a look at using cp. However, it might be some time before I pick this up again. My earlier project has almost been accepted by the person who asked me to make it, so first I'll be busy on that.
But the basic thing here is to create it somewhere else and copy it, right? Let's hope that works, then .
Also, I'll be looking at your suggestions for Flash and the alternate installer, thanks a lot!
Questions or Problems Should Not Be Posted in the Development Forum
Please Post in the Correct Forums & Read the Forum Rules
Moving to Q&A
Hi, I'm trying to use the library RootTools to make root operations on android system. I want to make a backup of some files including in the /etc folder with the next commands:
Code:
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
File exists = new File("/etc/gps.conf");
if (exists.exists()) {
// We make a backup first
int date = (int) System.currentTimeMillis();
String source = "/etc/gps.conf";
String destination = "/etc/gps" + date + ".conf";
RootTools.copyFile(source, destination, true, true);
// Last time that file was modified
// Date filedate = new Date(exists.lastModified());
}
}
});
It's supposed that with the RootTools.copyFile I can make that operation, but It doesn't make anything. I see that in cat /proc/mount doesn't appear etc folder. I'm tried too with the Apache transfer file copy, FileUtils.copyFile(source, destination) but it seems that it have problem with the mount system, who seems to be in RO. I try too with RootTools.remount("/etc", "RW") but fails too.
I'm lost with this issue. Pleeeeeease give some advices!!! I want to know how I can edit, create, delete, modify files in /etc /data... etc.
I'm testing this on a Samsung Galaxy S3 with an stock rom 4.1.2.
Thanks for your advices.
rumbitas said:
Hi, I'm trying to use the library RootTools to make root operations on android system. I want to make a backup of some files including in the /etc folder with the next commands:
Code:
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
File exists = new File("/etc/gps.conf");
if (exists.exists()) {
// We make a backup first
int date = (int) System.currentTimeMillis();
String source = "/etc/gps.conf";
String destination = "/etc/gps" + date + ".conf";
RootTools.copyFile(source, destination, true, true);
// Last time that file was modified
// Date filedate = new Date(exists.lastModified());
}
}
});
It's supposed that with the RootTools.copyFile I can make that operation, but It doesn't make anything. I see that in cat /proc/mount doesn't appear etc folder. I'm tried too with the Apache transfer file copy, FileUtils.copyFile(source, destination) but it seems that it have problem with the mount system, who seems to be in RO. I try too with RootTools.remount("/etc", "RW") but fails too.
I'm lost with this issue. Pleeeeeease give some advices!!! I want to know how I can edit, create, delete, modify files in /etc /data... etc.
I'm testing this on a Samsung Galaxy S3 with an stock rom 4.1.2.
Thanks for your advices.
Click to expand...
Click to collapse
Simply mount system as read/writeable
Sent from my LT18i using xda premium
exquisite.nish said:
Simply mount system as read/writeable
Sent from my LT18i using xda premium
Click to expand...
Click to collapse
This is the problem. The third parameter of RootTools.copyFile(source, destination, true, true) enable the RW option of the folder before the copy. The problem is that it doesn't change the mount type, still RO, still when I try RootTools.remount("/etc/", "rw").
I want to know if there is another way to do that.
Thanks.
This module fixing external SD card write issue on Android 4.4 KitKat. Module does not have any setting activity. Just enable it in Module tab and restart your phone.
No need to patch platform.xml file.
http://repo.xposed.info/module/kz.virtex.android.sdcardfix
Can be downloaded in Xposed Download tab.
HOW IT WORKS and WHAT FOR?
KitKat No SD card access
If SD card write access not enabled, then no any application without root permission can operate with files on SD Card.
KitKat WITH SD Card access
Once mod is enabled - any application without root access can operate with files on SD, including move, copy, delete.
Source code for other developers
Code:
/*
The MIT License (MIT)
Copyright (c) 2014 by Nurlan Mukhanov aka Falseclock
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
package kz.virtex.android.sdcardfix;
import de.robv.android.xposed.IXposedHookZygoteInit;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XposedHelpers;
public class XMain implements IXposedHookZygoteInit
{
@Override
public void initZygote(StartupParam startupParam) throws Throwable
{
final Class<?> pms = XposedHelpers.findClass("com.android.server.pm.PackageManagerService", null);
XposedHelpers.findAndHookMethod(pms, "readPermission", "org.xmlpull.v1.XmlPullParser", "java.lang.String", new XC_MethodHook()
{
protected void afterHookedMethod(MethodHookParam param) throws Throwable
{
String permission = (String) param.args[1];
if (permission.equals("android.permission.WRITE_EXTERNAL_STORAGE")) {
Class<?> process = XposedHelpers.findClass("android.os.Process", null);
int gid = (Integer) XposedHelpers.callStaticMethod(process, "getGidForName", "media_rw");
Object mSettings = XposedHelpers.getObjectField(param.thisObject, "mSettings");
Object mPermissions = XposedHelpers.getObjectField(mSettings, "mPermissions");
Object bp = XposedHelpers.callMethod(mPermissions, "get", permission);
int[] bp_gids = (int[]) XposedHelpers.getObjectField(bp, "gids");
XposedHelpers.setObjectField(bp, "gids", appendInt(bp_gids, gid));
}
}
});
}
private static int[] appendInt(int[] cur, int val)
{
if (cur == null) {
return new int[]
{ val };
}
final int N = cur.length;
for (int i = 0; i < N; i++) {
if (cur[i] == val) {
return cur;
}
}
int[] ret = new int[N + 1];
System.arraycopy(cur, 0, ret, 0, N);
ret[N] = val;
return ret;
}
}
Advantage against HandleExternalStorage: http://forum.xda-developers.com/xposed/modules/app-handleexternalstorage-t2693521 ?
Did not know that there was already such a fix available. Just found this one and since it is activated I have much less lags. Seems there were many apps trying to access Sdcard causing lags. Awesome!
Sent from my GT-I9300 using XDA Premium 4 mobile app
Can you share source code?
pyler said:
Can you share source code?
Click to expand...
Click to collapse
yep!
see first post
defim said:
Advantage against HandleExternalStorage: http://forum.xda-developers.com/xposed/modules/app-handleexternalstorage-t2693521 ?
Click to expand...
Click to collapse
oops. tried to search something with "SD" word in repository and didn't find anything.
thought nobody still implemented such mod.
Just downloaded module, decompiled and compared with my version.
I think my method works much more correct and less battery power consumptive. I only hooking internal android packages at startup, while module above doing this with every application.
Falseclock said:
oops. tried to search something with "SD" word in repository and didn't find anything.
thought nobody still implemented such mod.
Just downloaded module, decompiled and compared with my version.
I think my method works much more correct and less battery power consumptive. I only hooking internal android packages at startup, while module above doing this with every application.
Click to expand...
Click to collapse
Awesome! Thanks for source!
Falseclock said:
I think my method works much more correct and less battery power consumptive. I only hooking internal android packages at startup, while module above doing this with every application.
Click to expand...
Click to collapse
No. Mine gives extra battery power
The funny thing is that both are 99% the same, the only difference is appendInt()
defim said:
No. Mine gives extra battery power
The funny thing is that both are 99% the same, the only difference is appendInt()
Click to expand...
Click to collapse
That's good if so! :good:
do you know alternative to com.android.internal.util.ArrayUtils? Not to use internal API...
pyler said:
do you know alternative to com.android.internal.util.ArrayUtils? Not to use internal API...
Click to expand...
Click to collapse
Code:
public static int[] appendInt(int[] cur, int val) {
if (cur == null) {
return new int[] { val };
}
final int N = cur.length;
for (int i = 0; i < N; i++) {
if (cur[i] == val) {
return cur;
}
}
int[] ret = new int[N + 1];
System.arraycopy(cur, 0, ret, 0, N);
ret[N] = val;
return ret;
}
Is this module necessary for CM11 too? Sorry for noob question
Edit: Got it. Its not needed
Does this also fix the option of deleting SD files through regular file explorers and apps?
Abu-7abash said:
Does this also fix the option of deleting SD files through regular file explorers and apps?
Click to expand...
Click to collapse
12k downloads and no any complain
Just bought a sd card 64 gb samsung EVO , and i have no problem with full acces , copy/erase/moving apps , without installing this module , so , for what is useful this mod ???
Doesn't work for me :^(
Neither this nor the other xposed app mentioned in this thread work for me. Installed the app, marked it active, rebooted (just like I do with any xposed module) and still my apps can't touch the SD space.
Any thoughts or ideas anyone?
Samsung Galaxy Note 10.1 (2014 Edition)
SM-P600
Android 4.4.2
Build KOT49H.P600UEUCND2
i face also the same problem. Xperia Z2 here (latest version, Rooted), i have installed / reboot the module, but doesn't let me to move apps to my SD.
Is there any viable solution?
Ty in advance
Doesn't work on Note 3 AT&T.
Sent from the Phantom Drive on Krypton.
What exactly does this module do?
HunterNIU said:
Neither this nor the other xposed app mentioned in this thread work for me. Installed the app, marked it active, rebooted......
Click to expand...
Click to collapse
@Falseclock, same here.....using Xolo Q3000 device with Stock Rooted Android v4.4.2. used this app. (i just hope this is not deemed off-topic here....)
i'm trying to use onandroid v9.51 to create nandroid backups while the device is running. see pics of command output and also platform.xml.
i even tried making changes to /mnt/media_rw like in the pic below (right). still, no go!
any idea why the file system remains read-only? please suggest a workaround or alternate methods. i'm not knowledgeable enough.
many thanks in advance. :fingers-crossed:
Hello. Last time I was thinking about locking bootloader for Optimus L9. I decompiled Hidden Menu app and checked how bootloader status is checked. I found that everything is on NV partition. When i dumped nv using dd commad i was searching using hex editor and i found that 4 characters are stored on 00004800 and 00004801 (h) offset. If bootloader is unlocked there should be: 1101 (4353 DEC). This magic numer i found when i decompiled hidden menu app.
Now I need people who can't unlock bootloader and people who can unlock, but don't want to do this. I need also some people who have unlocked bootloader to confim if this string is correct. You need only to dump this 4 characters using my little script. You only must have root. Download zip in attachments and do this using 2 ways:
If you have adb working correctly
Extract zip
Run dump.cmd
Follow instruction
If you have done everything correctly you should have OUTPUT.txt
Check if this file is not empty and if it is ok send here on XDA
If you have problems with above method:
Download and run Terminal Emulator from Google Play
Type su and accept poup-up
Type dd if=/dev/block/platform/omap/omap_hsmmc.1/by-name/nv of=/sdcard/nv.img
Using computer type copy nv.img to the directory where you extracted zip
Open manual.cmd
Follow instructions
Check if OUTPUT.txt is not empty and send there it here
DON'T SEND US NV.IMG, BECAUSE IT INCLUDES IMEI. I ONLY WANT THIS ONE TXT FILE WHICH INCLUDES YOUR BOOTLOADER STATE.
IT WILL HELP US TO FIND METHOD TO LOCK BOOTLOADER AGAIN AND UNLOCK BOOTLOADER FOR SOME PEOPLE.
Decompiled bootloader check code:
Code:
package com.lge.hiddenmenu.bootloadunlock;
import android.app.ListActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.*;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.io.File;
import java.io.RandomAccessFile;
public class BootLoader_Unlock extends ListActivity
{
public BootLoader_Unlock()
{
String as[] = new String[1];
as[0] = "BootLoader Unlock Check";
mTopMenu = as;
}
private void showResult(int i)
{
android.app.AlertDialog.Builder builder = new android.app.AlertDialog.Builder(this);
Log.e("BootLoader Unlock", (new StringBuilder()).append("readNV(36): ").append(i).toString());
if(i == 4353)
builder.setMessage("Unlock");
else
builder.setMessage("Lock");
builder.setPositiveButton(0x104000a, null);
builder.setTitle("BootLoader Unlock Check");
builder.show();
}
public int device_unlock_flag_read()
{
short word0;
boolean flag;
File file;
RandomAccessFile randomaccessfile;
word0 = 0;
flag = true;
file = new File("/dev/block/platform/omap/omap_hsmmc.1/by-name/nv");
randomaccessfile = null;
RandomAccessFile randomaccessfile1 = new RandomAccessFile(file, "r");
randomaccessfile1.seek(18432L);
word0 = randomaccessfile1.readShort();
Log.e("BootLoader Unlock", (new StringBuilder()).append("swrv_fused_status=").append(word0).toString());
Exception exception;
Exception exception1;
try
{
randomaccessfile1.close();
}
catch(Exception exception4) { }
if(!flag)
word0 = -1;
return word0;
exception;
_L4:
Log.e("BootLoader Unlock", (new StringBuilder()).append("readNV(36): exception occurs: ").append(exception).toString());
flag = false;
try
{
randomaccessfile.close();
}
catch(Exception exception3) { }
break MISSING_BLOCK_LABEL_73;
exception1;
_L2:
try
{
randomaccessfile.close();
}
catch(Exception exception2) { }
throw exception1;
exception1;
randomaccessfile = randomaccessfile1;
if(true) goto _L2; else goto _L1
_L1:
exception;
randomaccessfile = randomaccessfile1;
if(true) goto _L4; else goto _L3
_L3:
}
public void onCreate(Bundle bundle)
{
super.onCreate(bundle);
setTitle("BootLoader Unlock Check");
setListAdapter(new ArrayAdapter(this, 0x1090003, mTopMenu));
}
public boolean onKeyDown(int i, KeyEvent keyevent)
{
i;
JVM INSTR tableswitch 3 4: default 24
// 3 31
// 4 31;
goto _L1 _L2 _L2
_L1:
return super.onKeyDown(i, keyevent);
_L2:
getWindow().clearFlags(128);
finish();
if(true) goto _L1; else goto _L3
_L3:
}
protected void onListItemClick(ListView listview, View view, int i, long l)
{
if(i == 0)
showResult(device_unlock_flag_read());
}
protected void onPause()
{
getWindow().clearFlags(128);
super.onPause();
}
protected void onResume()
{
getWindow().addFlags(128);
super.onResume();
}
private static final int NV_IDX_SWRV_FUSED_STATUS = 36;
private static final String NV_PATH = "/dev/block/platform/omap/omap_hsmmc.1/by-name/nv";
private static final int UNLOCK_VALUE = 4353;
private final String TAG = "BootLoader Unlock";
private String mTopMenu[];
}
Other resources in attachments.
ok, here, you have my output file. I had lock bootloader, I hope that this file help you. thanks
Sorry for my english
Duno crap about this phone but I went ahead and tried your script.
Would this work on CyanogenMod 9?
Is it even possible to replace nv.img with a modified version without a security error?
I think in nv there is information if bl is locked or unlocked
Here's the dump for my locked bootloader.
Here's the dump for my locked bootloader because i can't unlock it after rma
I think this is an efuse/prom like Samsung's Knox bit. But I thought it were a specific PROM chip, or integrated into the main chipset(the VIA Apollo mainboard southbridges had such a one-way flash cell.
If it's part of NVRAM, there may be the flash voltage line missing for that specific block, though I never heard of such.
No we figured out the exact line that's preventing us from unlocking in the source code. We just can't get the package signed to fix it.
---------- Post added at 03:06 PM ---------- Previous post was at 03:03 PM ----------
Hmm i wonder what the chances of this working is? I have very little hope through what i've been through
bulletfreak said:
No we figured out the exact line that's preventing us from unlocking in the source code. We just can't get the package signed to fix it.
---------- Post added at 03:06 PM ---------- Previous post was at 03:03 PM ----------
Hmm i wonder what the chances of this working is? I have very little hope through what i've been through
Click to expand...
Click to collapse
Although I don't use my L9 P769 anymore, only keep it for a backup, I edited a copy of my NV image with the data @artas182x posted in the OP and flashed it to the phone. The phone booted just fine, but apparently the NV images get's rebuilt or something along those lines with every boot as the Bootloader Status says it's still locked. If we can figure out how to write directly to the NV partition while the device is booted, then we may have a chance to unlock the bootloader.
i confirm that 1101 is for unlocked phone
There must be something on our flash. We must find what writes to nv partition.
You're about to discover a way to unlock the bootloader despite LGs restrictions. But re-locking it may be impossible.
Would watchdog have anything to do with it getting reflashed? Or does that just check for other "malicious" processes?
---------- Post added at 05:05 PM ---------- Previous post was at 05:01 PM ----------
Does Android automatically write logs of the boot up process or would we need to use a logcat for that?
re-lock impossible? its possible now with a cable with 910k resistor, you just need to Flash stock rom via LG mobile support tool or kdz updater, and your BL will be locked
Napisane używając SwiftKey, zaszyfrowane Enigmą i wysłane kablem Ethernet
Just to be sure is anyone actually going to look into this?
LG P768 Boot Unlock
How will i go about trying this? Like can i get a link to a modified nv.img? Logcats are unable to keep logs of the boot up process right? So is there anything i can use to log it?
We need uboot and x-loader logs
artas182x said:
We need uboot and x-loader logs
Click to expand...
Click to collapse
how does one obtain those?
Hi there,
right now I'm trying to get some knowledge about the little kernel bootloader and how it's working. I just read an article about exploiting the S4 bootloader: http://blog.azimuthsecurity.com/2013/05/exploiting-samsung-galaxy-s4-secure-boot.html
Basically the author describes a method, how to modify the function, which verifies the signature during runtime. As far as i understand it, he modifies a boot image in such a way, that a certain shell script is overwriting the check-function and in the end returns a check passed value.
Then i had a quick look into the little kernel source code to the corresponding position (at least i think, that's the right position:
Code:
else
{
dprintf(INFO, "Authenticating boot image (%d): start\n", imagesize_actual);
auth_kernel_img = image_verify((unsigned char *)image_addr,
(unsigned char *)(image_addr + imagesize_actual),
imagesize_actual,
CRYPTO_AUTH_ALG_SHA256);
dprintf(INFO, "Authenticating boot image (%d): done\n", imagesize_actual);
if(auth_kernel_img)
{
/* Authorized kernel */
device.is_tampered = 0;
}
}
I'm just wondering if it wouldn't be possible, to overwrite the image_verify function in the same way the author did it in his article?
regards,
scotch