Unauthorized OpenVPN API Caller

[giakhuu]

I keep encountering this error. Here is my build.gradle file:

buildscript {
    dependencies {
        classpath 'com.google.gms:google-services:4.4.1'
    }
}// Top-level build file where you can add configuration options common to all sub-projects/modules.
plugins {
    id 'com.android.application' version '8.1.4' apply false
    id 'org.jetbrains.kotlin.android' version '1.9.10' apply false
    id 'com.android.library' version '8.1.4' apply false
    //ksp
    id 'com.google.devtools.ksp' version '1.9.10-1.0.13' apply false;

    //Hilt
    id 'com.google.dagger.hilt.android' version '2.48' apply false;
}

Here is the file with the function to connect to VPN:

class HomeFragment : Fragment() {
    private var mService: IOpenVPNAPIService? = null
    private var vpnStart = false

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        binding = FragmentHomeBinding.inflate(inflater, container, false)
        val view = binding.root

        bindService()

        binding.button.setOnClickListener {
            if (buttonViewModel.isRunning) {
                stopPulse()
                stopVpn()
                binding.button.setText("Connect")
            } else {
                startPulse()
                startVpn()
                binding.button.setText("Disconnect")

            }
            buttonViewModel.isRunning = !buttonViewModel.isRunning
        }

        // Restore button state when Fragment is re-displayed
        if (buttonViewModel.isRunning) {
            startPulse()
            startVpn()
            binding.button.setText("Disconnect")
        }
        else {
            stopPulse()
            stopVpn()
            binding.button.setText("Connect")
        }

    private fun startVpn() {
        if (mService != null) {
            try {
                requireActivity().assets.open("vietnamudp.ovpn").use { inputStream ->
                    Log.d("testvpn", "startVpn: ")
                    val isr = InputStreamReader(inputStream)
                    val br = BufferedReader(isr)
                    var config = ""
                    var line: String?

                    while (true) {
                        line = br.readLine()
                        if (line == null) break
                        config += line + "\n"
                    }
                    val profile = mService!!.addNewVPNProfile("jp", true, config)
                    mService!!.startProfile(profile.mUUID)
                    mService!!.startVPN(config)

                    vpnStart = true
                    binding.button.text = "Disconnect"
                }
            } catch (e: Exception) {
                e.printStackTrace()
            }
        } else {
            Toast.makeText(activity, "VPN service is not available", Toast.LENGTH_SHORT).show()
        }
    }

    private fun stopVpn() {
        if (mService != null) {
            try {
                mService!!.disconnect()
                vpnStart = false
                binding.button.text = "Connect"
            } catch (e: Exception) {
                e.printStackTrace()
            }
        } else {
            // Handle when mService is null
        }
    }

    private fun bindService() {
        val icsopenvpnService = Intent(IOpenVPNAPIService::class.java.name)

        icsopenvpnService.setPackage("com.example.app_vpn")
        requireActivity().bindService(icsopenvpnService, mConnection, AppCompatActivity.BIND_AUTO_CREATE)
    }

    private val mConnection = object : ServiceConnection {
        override fun onServiceConnected(className: ComponentName, service: IBinder) {
            mService = IOpenVPNAPIService.Stub.asInterface(service)
            // Perform other operations related to service connection here
        }

        override fun onServiceDisconnected(className: ComponentName) {
            mService = null // Set mService to null when service is disconnected
        }
    }

    override fun onDestroy() {
        super.onDestroy()
        requireActivity().unbindService(mConnection)
    }

}

And here is the log:

java.lang.SecurityException: Unauthorized OpenVPN API Caller
    at android.os.Parcel.createExceptionOrNull(Parcel.java:2425)
    at android.os.Parcel.createException(Parcel.java:2409)
    at android.os.Parcel.readException(Parcel.java:2392)
    at android.os.Parcel.readException(Parcel.java:2334)
    at de.blinkt.openvpn.api.IOpenVPNAPIService$Stub$Proxy.addNewVPNProfile(IOpenVPNAPIService.java:542)
    at com.example.app_vpn.ui.auth.signup.SignUpActivity.startVpn(SignUpActivity.kt:165)
    at com.example.app_vpn.ui.auth.signup.SignUpActivity.onCreate$lambda$4(SignUpActivity.kt:102)
    at com.example.app_vpn.ui.auth.signup.SignUpActivity.$r8$lambda$FeCTd4qtpzwL1uSFqhOlils_ZGc(Unknown Source:0)
    at com.example.app_vpn.ui.auth.signup.SignUpActivity$$ExternalSyntheticLambda3.onClick(Unknown Source:2)
    at android.view.View.performClick(View.java:7750)
    at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:1218)
    at android.view.View.performClickInternal(View.java:7727)
    at android.view.View.access$3700(View.java:861)
    at android.view.View$PerformClick.run(View.java:29141)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loopOnce(Looper.java:210)
    at android.os.Looper.loop(Looper.java:299)
    at android.app.ActivityThread.main(ActivityThread.java:8250)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:556)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1045)

The line causing the error in the HomeFragment file is:

val profile = mService!!.addNewVPNProfile("jp", true, config)

I have another project that also uses the same config file, but it works fine. Only this project consistently has this error. I am using the latest version of ics-openvpn .