Introduce RootServices to the app

app/build.gradle.kts

@@ -94,9 +94,10 @@ dependencies {
     implementation("io.noties.markwon:image:${vMarkwon}")
     implementation("com.caverock:androidsvg:1.4")
 
-    val vLibsu = "3.2.0"
+    val vLibsu = "3.2.1"
     implementation("com.github.topjohnwu.libsu:core:${vLibsu}")
     implementation("com.github.topjohnwu.libsu:io:${vLibsu}")
+    implementation("com.github.topjohnwu.libsu:service:${vLibsu}")
 
     val vRetrofit = "2.9.0"
     implementation("com.squareup.retrofit2:retrofit:${vRetrofit}")

app/src/main/java/com/topjohnwu/magisk/arch/BaseMainActivity.kt

@@ -9,11 +9,9 @@ import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import androidx.databinding.ViewDataBinding
 import com.topjohnwu.magisk.BuildConfig.APPLICATION_ID
 import com.topjohnwu.magisk.R
-import com.topjohnwu.magisk.core.Config
-import com.topjohnwu.magisk.core.Const
-import com.topjohnwu.magisk.core.JobService
-import com.topjohnwu.magisk.core.isRunningAsStub
+import com.topjohnwu.magisk.core.*
 import com.topjohnwu.magisk.core.tasks.HideAPK
+import com.topjohnwu.magisk.core.utils.RootRegistry
 import com.topjohnwu.magisk.di.ServiceLocator
 import com.topjohnwu.magisk.ui.theme.Theme
 import com.topjohnwu.magisk.view.MagiskDialog
@@ -21,6 +19,7 @@ import com.topjohnwu.magisk.view.Notifications
 import com.topjohnwu.magisk.view.Shortcuts
 import com.topjohnwu.superuser.Shell
 import java.util.concurrent.CountDownLatch
+import java.util.concurrent.TimeUnit
 
 abstract class BaseMainActivity<VM : BaseViewModel, Binding : ViewDataBinding>
     : BaseUIActivity<VM, Binding>() {
@@ -48,13 +47,15 @@ abstract class BaseMainActivity<VM : BaseViewModel, Binding : ViewDataBinding>
         }
 
         if (doPreload) {
-            // Pre-initialize root shell
             Shell.getShell(null) {
-                if (isRunningAsStub && !Shell.rootAccess()) {
+                if (isRunningAsStub && !it.isRoot) {
                     showInvalidStateMessage()
                     return@getShell
                 }
                 preLoad()
+                if (it.isRoot) {
+                    RootRegistry.Connection.await(2, TimeUnit.SECONDS)
+                }
                 runOnUiThread {
                     doPreload = false
                     if (isRunningAsStub) {

app/src/main/java/com/topjohnwu/magisk/core/App.kt

@@ -7,13 +7,15 @@ import android.content.Context
 import android.content.res.Configuration
 import android.os.Bundle
 import com.topjohnwu.magisk.DynAPK
-import com.topjohnwu.magisk.core.utils.AppShellInit
-import com.topjohnwu.magisk.core.utils.BusyBoxInit
 import com.topjohnwu.magisk.core.utils.IODispatcherExecutor
+import com.topjohnwu.magisk.core.utils.RootRegistry
+import com.topjohnwu.magisk.core.utils.ShellInit
 import com.topjohnwu.magisk.core.utils.updateConfig
 import com.topjohnwu.magisk.di.ServiceLocator
 import com.topjohnwu.magisk.ktx.unwrap
 import com.topjohnwu.superuser.Shell
+import com.topjohnwu.superuser.internal.UiThreadHandler
+import com.topjohnwu.superuser.ipc.RootService
 import timber.log.Timber
 import kotlin.system.exitProcess
 
@@ -26,7 +28,7 @@ open class App() : Application() {
     init {
         Shell.setDefaultBuilder(Shell.Builder.create()
             .setFlags(Shell.FLAG_MOUNT_MASTER)
-            .setInitializers(BusyBoxInit::class.java, AppShellInit::class.java)
+            .setInitializers(ShellInit::class.java)
             .setTimeout(2))
         Shell.EXECUTOR = IODispatcherExecutor()
 
@@ -57,6 +59,15 @@ open class App() : Application() {
         app.registerActivityLifecycleCallbacks(ForegroundTracker)
     }
 
+    override fun onCreate() {
+        super.onCreate()
+        RootRegistry.bindTask = RootService.createBindTask(
+            intent<RootRegistry>(),
+            UiThreadHandler.executor,
+            RootRegistry.Connection
+        )
+    }
+
     // This is required as some platforms expect ContextImpl
     override fun getBaseContext(): Context {
         return super.getBaseContext().unwrap()

app/src/main/java/com/topjohnwu/magisk/core/utils/IODispatcherExecutor.kt

@@ -1,13 +1,19 @@
 package com.topjohnwu.magisk.core.utils
 
 import kotlinx.coroutines.*
-import java.util.concurrent.*
+import java.util.concurrent.AbstractExecutorService
+import java.util.concurrent.CountDownLatch
+import java.util.concurrent.TimeUnit
 
 class IODispatcherExecutor : AbstractExecutorService() {
 
-    private val job = SupervisorJob().apply { invokeOnCompletion { future.run() } }
+    private val job = SupervisorJob()
     private val scope = CoroutineScope(job + Dispatchers.IO)
-    private val future = FutureTask(Callable { true })
+    private val latch = CountDownLatch(1)
+
+    init {
+        job.invokeOnCompletion { latch.countDown() }
+    }
 
     override fun execute(command: Runnable) {
         scope.launch {
@@ -26,11 +32,5 @@ class IODispatcherExecutor : AbstractExecutorService() {
 
     override fun isTerminated() = job.isCancelled && job.isCompleted
 
-    override fun awaitTermination(timeout: Long, unit: TimeUnit): Boolean {
-        return try {
-            future.get(timeout, unit)
-        } catch (e: TimeoutException) {
-            false
-        }
-    }
+    override fun awaitTermination(timeout: Long, unit: TimeUnit) = latch.await(timeout, unit)
 }

app/src/main/java/com/topjohnwu/magisk/core/utils/RootRegistry.kt

@@ -0,0 +1,47 @@
+package com.topjohnwu.magisk.core.utils
+
+import android.content.ComponentName
+import android.content.Intent
+import android.content.ServiceConnection
+import android.os.Binder
+import android.os.IBinder
+import com.topjohnwu.superuser.ipc.RootService
+import timber.log.Timber
+import java.util.concurrent.CountDownLatch
+import kotlin.system.exitProcess
+
+class RootRegistry : RootService() {
+
+    init {
+        // Always log full stack trace with Timber
+        Timber.plant(Timber.DebugTree())
+        Thread.setDefaultUncaughtExceptionHandler { _, e ->
+            Timber.e(e)
+            exitProcess(1)
+        }
+    }
+
+    override fun onBind(intent: Intent): IBinder {
+        // TODO: PLACEHOLDER
+        return Binder()
+    }
+
+    // TODO: PLACEHOLDER
+    object Connection : CountDownLatch(1), ServiceConnection {
+        override fun onServiceConnected(name: ComponentName, service: IBinder) {
+            Timber.d("onServiceConnected")
+            countDown()
+        }
+        override fun onNullBinding(name: ComponentName) {
+            Timber.d("onServiceConnected")
+            countDown()
+        }
+        override fun onServiceDisconnected(name: ComponentName) {
+            bind(Intent().setComponent(name), this)
+        }
+    }
+
+    companion object {
+        var bindTask: Runnable? = null
+    }
+}

app/src/main/java/com/topjohnwu/magisk/core/utils/ShellInit.kt

@@ -3,7 +3,10 @@ package com.topjohnwu.magisk.core.utils
 import android.content.Context
 import com.topjohnwu.magisk.DynAPK
 import com.topjohnwu.magisk.R
-import com.topjohnwu.magisk.core.*
+import com.topjohnwu.magisk.core.Config
+import com.topjohnwu.magisk.core.Const
+import com.topjohnwu.magisk.core.Info
+import com.topjohnwu.magisk.core.isRunningAsStub
 import com.topjohnwu.magisk.ktx.cachedFile
 import com.topjohnwu.magisk.ktx.deviceProtectedContext
 import com.topjohnwu.magisk.ktx.rawResource
@@ -13,18 +16,12 @@ import com.topjohnwu.superuser.ShellUtils
 import java.io.File
 import java.util.jar.JarFile
 
-abstract class BaseShellInit : Shell.Initializer() {
-    final override fun onInit(context: Context, shell: Shell): Boolean {
-        return init(context.wrap(), shell)
+class ShellInit : Shell.Initializer() {
+    override fun onInit(context: Context, shell: Shell): Boolean {
+        if (shell.isRoot) {
+            RootRegistry.bindTask?.run()
+            RootRegistry.bindTask = null
         }
-
-    abstract fun init(context: Context, shell: Shell): Boolean
-}
-
-
-class BusyBoxInit : BaseShellInit() {
-
-    override fun init(context: Context, shell: Shell): Boolean {
         shell.newJob().apply {
             add("export ASH_STANDALONE=1")
 
@@ -63,20 +60,7 @@ class BusyBoxInit : BaseShellInit() {
                 // Directly execute the file
                 add("exec $localBB sh")
             }
-        }.exec()
-        return true
-    }
-}
 
-class AppShellInit : BaseShellInit() {
-
-    override fun init(context: Context, shell: Shell): Boolean {
-
-        fun fastCmd(cmd: String) = ShellUtils.fastCmd(shell, cmd)
-        fun getVar(name: String) = fastCmd("echo \$$name")
-        fun getBool(name: String) = getVar(name).toBoolean()
-
-        shell.newJob().apply {
             add(context.rawResource(R.raw.manager))
             if (shell.isRoot) {
                 add(context.assets.open("util_functions.sh"))
@@ -84,6 +68,10 @@ class AppShellInit : BaseShellInit() {
             add("app_init")
         }.exec()
 
+        fun fastCmd(cmd: String) = ShellUtils.fastCmd(shell, cmd)
+        fun getVar(name: String) = fastCmd("echo \$$name")
+        fun getBool(name: String) = getVar(name).toBoolean()
+
         Const.MAGISKTMP = getVar("MAGISKTMP")
         Info.isSAR = getBool("SYSTEM_ROOT")
         Info.ramdisk = getBool("RAMDISKEXIST")
@@ -95,6 +83,9 @@ class AppShellInit : BaseShellInit() {
         Config.keepVerity = getBool("KEEPVERITY")
         Config.keepEnc = getBool("KEEPFORCEENCRYPT")
 
+        // Pre-fetch env
+        Info.env
+
         return true
     }
 }