"Run Shell" non-root action error while in terminal it works (Tasker v5.0b9)

[GPS]

Hi,

On tasker v5.0b9, when I run action "Run shell", while NOT selecting "run as root", *SOME* commands returns weird error for no reason:

• am force-stop --user 0 PACKAGE_NAME
  
• pm uninstall --user 0 -k PACKAGE_NAME

The errors are ( as output of the commands above, accordingly ):

• java.lang.SecurityException: Permission Denial:
  forceStopPackage() from pid=15910, uid=10162 requires android.permission.FORCE_STOP_PACKAGES
  at android.os.Parcel.readException(Parcel.java:1684)
  at android.os.Parcel.readException(Parcel.java:1637)
  at android.app.ActivityManagerProxy.forceStopPackage(ActivityManagerNative.java:5255)
  at com.android.commands.am.Am.runForceStop(Am.java:752)
  at com.android.commands.am.Am.onRun(Am.java:400)
  at com.android.internal.os.BaseCommand.run(BaseCommand.java:51)
  at com.android.commands.am.Am.main(Am.java:124)
  at com.android.internal.os.RuntimeInit.nativeFinishInit(Native Method)
  at com.android.internal.os.RuntimeInit.main(RuntimeInit.java:264)
  
• Exception occurred while dumping:
  java.lang.NullPointerException
  at com.android.internal.util.Preconditions.checkNotNull(Preconditions.java:94)
  at com.android.server.AppOpsService.checkPackage(AppOpsService.java:1073)
  at android.app.AppOpsManager.checkPackage(AppOpsManager.java:1937)
  at com.android.server.pm.PackageInstallerService.uninstall(PackageInstallerService.java:874)
  at com.android.server.pm.PackageManagerShellCommand.runUninstall(PackageManagerShellCommand.java:792)
  at com.android.server.pm.PackageManagerShellCommand.onCommand(PackageManagerShellCommand.java:118)
  at android.os.ShellCommand.exec(ShellCommand.java:94)
  at com.android.server.pm.PackageManagerService.onShellCommand(PackageManagerService.java:18565)
  at android.os.Binder.shellCommand(Binder.java:468)
  at android.os.Binder.onTransact(Binder.jav

When I run the these command in terminal emulator on the same phone or by using adb (WITHOUT su !), they exec and work, with NO error whatsoever.
Please note that I MUST use the "--user 0" since I wish to run these command on phones W/O root, those the need to run them as "current/local user", i.e user number "0".

I also tried to put these command in some "sh" script file on /sdcard then ran "Shell command" action of

"sh /sdcard/script.sh" -> but I get the SAME errors.
again, using terminal emulator or ADB ( W/O root/su ) - it exec and work without any issue or error.

I hope you can solve this bug.

Thanks,

GPS.

[GPS]

P.S - I'm on a "Resurrection Remix" custom rom which is based on LineageOS which is based on Android 7.1.2

[Pent]

adb has special permissions I believe.

I don't know what a terminal emulator app does different from a shell execution
that would give it those extra permissions. But are you sure there's no root involved anywhere down the
line ? e.g. the terminal emulator acquires the permissions as root even before your shell starts.

Because being able to e.g. uninstall packages using a normal app like Tasker would be a serious
security flaw.

Pent

[GPS]

bah...

you're probably right..

I did gave once root perm to the terminal emulator - that's enough i guess to let these command word although I don't "su" beforehand.

any chance tasker can mimic adb's permissions in any way ?

[Pent]

any chance tasker can mimic adb's permissions in any way ?

Again, it would be a security hole. Maybe it exists, but it would be closed
quickly I think.

Pent
 

[Niaogu Bugu]

https://play.google.com/store/apps/details?id=com.ADBPlugin 

在 2017年7月17日星期一 UTC+8下午9:10:01，GPS写道：