Suppress SecurityException on Android 8-10

README.md

@@ -37,7 +37,7 @@ The following features in the app requires it to be installed under `/system/pri
 One way to do this is to use [App systemizer for Magisk](https://github.com/Magisk-Modules-Repo/terminal_systemizer).
 
 * (since Android 11, since app v2.9.1) `android.permission.BLUETOOTH_PRIVILEGED`: Use the Bluetooth tethering shortcut switch in app.
-* (prior to Android 11, since app v2.4.0) `android.permission.OVERRIDE_WIFI_CONFIG`: Read/write system Wi-Fi hotspot configuration. ([#117](https://github.com/Mygod/VPNHotspot/issues/117))
+* (Android 8-10, since app v2.4.0) `android.permission.OVERRIDE_WIFI_CONFIG`: Read/write system Wi-Fi hotspot configuration. ([#117](https://github.com/Mygod/VPNHotspot/issues/117))
 
 Installing as system app also has the side benefit of launching root daemon less frequently due to having privileged permissions listed below.
 

mobile/src/main/java/be/mygod/vpnhotspot/manage/TetherManager.kt

@@ -23,6 +23,7 @@ import be.mygod.vpnhotspot.net.TetheringManager
 import be.mygod.vpnhotspot.net.wifi.SoftApConfigurationCompat
 import be.mygod.vpnhotspot.net.wifi.WifiApManager
 import be.mygod.vpnhotspot.root.WifiApCommands
+import be.mygod.vpnhotspot.util.getRootCause
 import be.mygod.vpnhotspot.util.readableMessage
 import be.mygod.vpnhotspot.widget.SmartSnackbar
 import kotlinx.coroutines.Dispatchers
@@ -95,7 +96,7 @@ sealed class TetherManager(protected val parent: TetheringFragment) : Manager(),
         data.notifyChange()
     }
     override fun onException(e: Exception) {
-        if (e !is InvocationTargetException || e.targetException !is SecurityException) Timber.w(e)
+        if (e.getRootCause() !is SecurityException) Timber.w(e)
         GlobalScope.launch(Dispatchers.Main.immediate) {
             val context = parent.context ?: app
             Toast.makeText(context, e.readableMessage, Toast.LENGTH_LONG).show()

mobile/src/main/java/be/mygod/vpnhotspot/manage/TetheringFragment.kt

@@ -196,7 +196,9 @@ class TetheringFragment : Fragment(), ServiceConnection, Toolbar.OnMenuItemClick
                             null
                         } catch (eRoot: Exception) {
                             eRoot.addSuppressed(e)
-                            Timber.w(eRoot)
+                            if (Build.VERSION.SDK_INT !in 26..29 || eRoot.getRootCause() !is SecurityException) {
+                                Timber.w(eRoot)
+                            }
                             SmartSnackbar.make(eRoot).show()
                             null
                         }

mobile/src/main/java/be/mygod/vpnhotspot/manage/TetheringTileService.kt

@@ -18,6 +18,7 @@ import be.mygod.vpnhotspot.net.TetheringManager
 import be.mygod.vpnhotspot.net.TetheringManager.tetheredIfaces
 import be.mygod.vpnhotspot.net.wifi.WifiApManager
 import be.mygod.vpnhotspot.util.broadcastReceiver
+import be.mygod.vpnhotspot.util.getRootCause
 import be.mygod.vpnhotspot.util.readableMessage
 import be.mygod.vpnhotspot.util.stopAndUnbind
 import kotlinx.coroutines.Dispatchers
@@ -122,7 +123,7 @@ sealed class TetheringTileService : IpNeighbourMonitoringTileService(), Tetherin
         updateTile()
     }
     override fun onException(e: Exception) {
-        if (e !is InvocationTargetException || e.targetException !is SecurityException) Timber.w(e)
+        if (e.getRootCause() !is SecurityException) Timber.w(e)
         GlobalScope.launch(Dispatchers.Main.immediate) {
             Toast.makeText(this@TetheringTileService, e.readableMessage, Toast.LENGTH_LONG).show()
         }

mobile/src/main/java/be/mygod/vpnhotspot/util/Utils.kt

@@ -6,6 +6,7 @@ import android.content.*
 import android.net.InetAddresses
 import android.os.Build
 import android.os.Handler
+import android.os.RemoteException
 import android.text.Spannable
 import android.text.SpannableString
 import android.text.SpannableStringBuilder
@@ -32,9 +33,11 @@ import java.net.NetworkInterface
 import java.net.SocketException
 import java.util.concurrent.Executor
 
-val Throwable.readableMessage: String get() = if (this is InvocationTargetException) {
-    targetException.readableMessage
-} else localizedMessage ?: javaClass.name
+tailrec fun Throwable.getRootCause(): Throwable {
+    if (this is InvocationTargetException || this is RemoteException) return (cause ?: return this).getRootCause()
+    return this
+}
+val Throwable.readableMessage: String get() = getRootCause().run { localizedMessage ?: javaClass.name }
 
 /**
  * This is a hack: we wrap longs around in 1 billion and such. Hopefully every language counts in base 10 and this works