GlobalScope has numerous problems[1] that make it unfit for
use in most applications and making it behave correctly requires
an excessive amount of verbosity that's alleviated simply by using
any other scope. Since we run multiple operations in the context
of the application's lifecycle, introduce a new scope that is created
when our application is, and cancelled upon its termination.
While at it, make the scope default to Dispatchers.IO to reduce pressure
on the UI event loop. Tasks requiring access to the UI thread appropriately
switch context making the change completely safe.
1: https://medium.com/@elizarov/the-reason-to-avoid-globalscope-835337445abc
Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>
onSelectedTunnelChanged is already queueing us to Dispatchers.Main
(rather than Dispatchers.Main.immediate, which would crash, but why?),
so avoid the extra trip through the event loop by toggling the selected
tunnel right away.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Setting the correct value for the allowedAuthenticators field lets the library correctly detect this by itself as verified on an API 21 emulator
Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>
Layouts in differing configurations must agree on their root tags, so we give
both copies of main_activity the same root ID, and adjust the check for
two-pane layout to simply test for nullability. This also changes the inset
dispatch code to use ViewCompat and WindowInsetsCompat since they will adjust
insets based on the SDK level allowing us to abstract away that concern.
Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>
The stats might become null between these two checks, when a tunnel
flips off, resulting in a null pointer dereference:
at com.wireguard.android.model.ObservableTunnel.getStatisticsAsync (ObservableTunnel.java:103)
at com.wireguard.android.fragment.TunnelDetailFragment.updateStats (TunnelDetailFragment.java:108)
at com.wireguard.android.fragment.TunnelDetailFragment.access$updateStats (TunnelDetailFragment.java:27)
at com.wireguard.android.fragment.TunnelDetailFragment$onResume$1.run (TunnelDetailFragment.java:74)
at java.util.TimerThread.mainLoop (TimerThread.java:562)
at java.util.TimerThread.run (TimerThread.java:512)
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
When tunnel deletion is triggered we don't bother with animation theatrics
because the resulting Snackbar needs this fab to be its anchor, which it can't
do if its outside the screen or busy animating.
Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>
Long press a tunnel item. SIGKILL the app. Reenter it. Boom:
kotlin.KotlinNullPointerException:
at com.wireguard.android.fragment.TunnelListFragment$ActionModeListener.onCreateActionMode (TunnelListFragment.java:347)
at androidx.appcompat.app.AppCompatDelegateImpl$ActionModeCallbackWrapperV9.onCreateActionMode (AppCompatDelegateImpl.java:2442)
at androidx.appcompat.app.WindowDecorActionBar$ActionModeImpl.dispatchOnCreate (WindowDecorActionBar.java:1062)
at androidx.appcompat.app.WindowDecorActionBar.startActionMode (WindowDecorActionBar.java:530)
at androidx.appcompat.app.AppCompatDelegateImpl.startSupportActionMode (AppCompatDelegateImpl.java:1055)
at androidx.appcompat.app.AppCompatActivity.startSupportActionMode (AppCompatActivity.java:316)
at com.wireguard.android.fragment.TunnelListFragment$ActionModeListener.setItemChecked (TunnelListFragment.java:371)
at com.wireguard.android.fragment.TunnelListFragment.onActivityCreated (TunnelListFragment.java:174)
at androidx.fragment.app.Fragment.performActivityCreated (Fragment.java:2717)
at androidx.fragment.app.FragmentStateManager.activityCreated (FragmentStateManager.java:346)
at androidx.fragment.app.FragmentManager.moveToState (FragmentManager.java:1188)
at androidx.fragment.app.FragmentManager.moveToState (FragmentManager.java:161)
at androidx.fragment.app.FragmentManager.moveToState (FragmentManager.java:1356)
at androidx.fragment.app.FragmentManager.moveToState (FragmentManager.java:5)
at androidx.fragment.app.FragmentManager.moveFragmentToExpectedState (FragmentManager.java:1434)
at androidx.fragment.app.FragmentManager.moveFragmentToExpectedState (FragmentManager.java:5)
at androidx.fragment.app.FragmentManager.moveToState (FragmentManager.java:1497)
at androidx.fragment.app.FragmentManager.moveToState (FragmentManager.java:389)
at androidx.fragment.app.FragmentManager.dispatchStateChange (FragmentManager.java:2625)
at androidx.fragment.app.FragmentManager.dispatchStateChange (FragmentManager.java:677)
at androidx.fragment.app.FragmentManager.dispatchActivityCreated (FragmentManager.java:2577)
at androidx.fragment.app.FragmentManager.dispatchActivityCreated (FragmentManager.java:9)
at androidx.fragment.app.FragmentController.dispatchActivityCreated (FragmentController.java:247)
at androidx.fragment.app.FragmentActivity.onStart (FragmentActivity.java:541)
at androidx.appcompat.app.AppCompatActivity.onStart (AppCompatActivity.java:201)
at android.app.Instrumentation.callActivityOnStart (Instrumentation.java:1440)
at android.app.Activity.performStart (Activity.java:8109)
at android.app.ActivityThread.handleStartActivity (ActivityThread.java:3806)
at android.app.servertransaction.TransactionExecutor.performLifecycleSequence (TransactionExecutor.java:235)
at android.app.servertransaction.TransactionExecutor.cycleToPath (TransactionExecutor.java:215)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState (TransactionExecutor.java:187)
at android.app.servertransaction.TransactionExecutor.execute (TransactionExecutor.java:105)
at android.app.ActivityThread$H.handleMessage (ActivityThread.java:2386)
at android.os.Handler.dispatchMessage (Handler.java:107)
at android.os.Looper.loop (Looper.java:213)
at android.app.ActivityThread.main (ActivityThread.java:8178)
at java.lang.reflect.Method.invoke (Method.java)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:513)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1101)
This commit avoids the crash. But it's not clear to me that this is
really the right solution. However, in testing it appears to work.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Jason A. Donenfeld