Simplify several hacks

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

@@ -7,12 +7,8 @@ import android.content.Context
 import android.content.res.Configuration
 import android.os.Bundle
 import com.topjohnwu.magisk.DynAPK
-import com.topjohnwu.magisk.core.utils.DispatcherExecutor
-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.core.utils.*
 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
@@ -40,28 +36,34 @@ open class App() : Application() {
         }
     }
 
-    override fun attachBaseContext(base: Context) {
+    override fun attachBaseContext(context: Context) {
         Shell.setDefaultBuilder(Shell.Builder.create()
             .setFlags(Shell.FLAG_MOUNT_MASTER)
             .setInitializers(ShellInit::class.java)
             .setTimeout(2))
         Shell.EXECUTOR = DispatcherExecutor(Dispatchers.IO)
 
-        // Some context magic
+        // Get the actual ContextImpl
         val app: Application
-        val impl: Context
-        if (base is Application) {
-            app = base
-            impl = base.baseContext
+        val base: Context
+        if (context is Application) {
+            app = context
+            base = context.baseContext
         } else {
             app = this
-            impl = base
+            base = context
         }
-        val wrapped = impl.wrap()
-        super.attachBaseContext(wrapped)
+        super.attachBaseContext(base)
+        ServiceLocator.context = base
 
-        ServiceLocator.context = wrapped
-        AssetHack.init(impl)
+        refreshLocale()
+        AppApkPath = if (isRunningAsStub) {
+            DynAPK.current(base).path
+        } else {
+            base.packageResourcePath
+        }
+
+        base.resources.patch()
         app.registerActivityLifecycleCallbacks(ForegroundTracker)
     }
 
@@ -74,14 +76,9 @@ open class App() : Application() {
         )
     }
 
-    // This is required as some platforms expect ContextImpl
-    override fun getBaseContext(): Context {
-        return super.getBaseContext().unwrap()
-    }
-
     override fun onConfigurationChanged(newConfig: Configuration) {
         if (resources.configuration.diff(newConfig) != 0) {
-            resources.updateConfig(newConfig)
+            resources.setConfig(newConfig)
         }
         if (!isRunningAsStub)
             super.onConfigurationChanged(newConfig)

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

@@ -13,15 +13,37 @@ import android.content.res.Resources
 import android.util.DisplayMetrics
 import com.topjohnwu.magisk.DynAPK
 import com.topjohnwu.magisk.R
-import com.topjohnwu.magisk.core.utils.refreshLocale
-import com.topjohnwu.magisk.core.utils.updateConfig
+import com.topjohnwu.magisk.core.utils.syncLocale
+import com.topjohnwu.magisk.di.AppContext
 
-fun AssetManager.addAssetPath(path: String) {
-    DynAPK.addAssetPath(this, path)
+lateinit var AppApkPath: String
+
+fun AssetManager.addAssetPath(path: String) = DynAPK.addAssetPath(this, path)
+
+fun Context.wrap(): Context = if (this is PatchedContext) this else PatchedContext(this)
+
+private class PatchedContext(base: Context) : ContextWrapper(base) {
+    init { base.resources.patch() }
+    override fun getClassLoader() = javaClass.classLoader!!
+    override fun createConfigurationContext(config: Configuration) =
+        super.createConfigurationContext(config).wrap()
 }
 
-fun Context.wrap(inject: Boolean = false): Context =
-    if (inject) ReInjectedContext(this) else InjectedContext(this)
+fun Resources.patch(): Resources {
+    syncLocale()
+    if (isRunningAsStub)
+        assets.addAssetPath(AppApkPath)
+    return this
+}
+
+fun createNewResources(): Resources {
+    val asset = AssetManager::class.java.newInstance()
+    asset.addAssetPath(AppApkPath)
+    val config = Configuration(AppContext.resources.configuration)
+    val metrics = DisplayMetrics()
+    metrics.setTo(AppContext.resources.displayMetrics)
+    return Resources(asset, metrics, config)
+}
 
 fun Class<*>.cmp(pkg: String) =
     ComponentName(pkg, Info.stub?.classToComponent?.get(name) ?: name)
@@ -32,52 +54,6 @@ inline fun <reified T> Activity.redirect() = Intent(intent)
 
 inline fun <reified T> Context.intent() = Intent().setComponent(T::class.java.cmp(packageName))
 
-private open class InjectedContext(base: Context) : ContextWrapper(base) {
-    open val res: Resources get() = AssetHack.resource
-    override fun getAssets(): AssetManager = res.assets
-    override fun getResources() = res
-    override fun getClassLoader() = javaClass.classLoader!!
-    override fun createConfigurationContext(config: Configuration): Context {
-        return super.createConfigurationContext(config).wrap(true)
-    }
-}
-
-private class ReInjectedContext(base: Context) : InjectedContext(base) {
-    override val res by lazy { base.resources.patch() }
-    private fun Resources.patch(): Resources {
-        updateConfig()
-        if (isRunningAsStub)
-            assets.addAssetPath(AssetHack.apk)
-        return this
-    }
-}
-
-object AssetHack {
-
-    lateinit var resource: Resources
-    lateinit var apk: String
-
-    fun init(context: Context) {
-        resource = context.resources
-        refreshLocale()
-        if (isRunningAsStub) {
-            apk = DynAPK.current(context).path
-            resource.assets.addAssetPath(apk)
-        } else {
-            apk = context.packageResourcePath
-        }
-    }
-
-    fun newResource(): Resources {
-        val asset = AssetManager::class.java.newInstance()
-        asset.addAssetPath(apk)
-        val config = Configuration(resource.configuration)
-        val metrics = DisplayMetrics()
-        metrics.setTo(resource.displayMetrics)
-        return Resources(asset, metrics, config)
-    }
-}
-
 // Keep a reference to these resources to prevent it from
 // being removed when running "remove unused resources"
 val shouldKeepResources = listOf(

app/src/main/java/com/topjohnwu/magisk/core/base/BaseActivity.kt

@@ -36,7 +36,7 @@ abstract class BaseActivity : AppCompatActivity() {
     }
 
     override fun attachBaseContext(base: Context) {
-        super.attachBaseContext(base.wrap(true))
+        super.attachBaseContext(base.wrap())
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {

app/src/main/java/com/topjohnwu/magisk/core/tasks/MagiskInstaller.kt

@@ -422,7 +422,7 @@ abstract class MagiskInstallImpl protected constructor(
 
     protected fun fixEnv() = extractFiles() && "fix_env $installDir".sh().isSuccess
 
-    protected fun uninstall() = "run_uninstaller ${AssetHack.apk}".sh().isSuccess
+    protected fun uninstall() = "run_uninstaller $AppApkPath".sh().isSuccess
 
     @WorkerThread
     protected abstract suspend fun operations(): Boolean

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

@@ -6,8 +6,9 @@ import android.annotation.SuppressLint
 import android.content.res.Configuration
 import android.content.res.Resources
 import com.topjohnwu.magisk.R
-import com.topjohnwu.magisk.core.AssetHack
 import com.topjohnwu.magisk.core.Config
+import com.topjohnwu.magisk.core.createNewResources
+import com.topjohnwu.magisk.di.AppContext
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import java.util.*
@@ -25,7 +26,7 @@ withContext(Dispatchers.Default) {
     val compareId = R.string.app_changelog
 
     // Create a completely new resource to prevent cross talk over active configs
-    val res = AssetHack.newResource()
+    val res = createNewResources()
 
     val locales = ArrayList<String>().apply {
         // Add default locale
@@ -40,13 +41,13 @@ withContext(Dispatchers.Default) {
     }.map {
         Locale.forLanguageTag(it)
     }.distinctBy {
-        res.updateLocale(it)
+        res.setLocale(it)
         res.getString(compareId)
     }.sortedWith { a, b ->
         a.getDisplayName(a).compareTo(b.getDisplayName(b), true)
     }
 
-    res.updateLocale(defaultLocale)
+    res.setLocale(defaultLocale)
     val defName = res.getString(R.string.system_default)
 
     val names = ArrayList<String>(locales.size + 1)
@@ -63,12 +64,14 @@ withContext(Dispatchers.Default) {
     (names.toTypedArray() to values.toTypedArray()).also { cachedLocales = it }
 }
 
-fun Resources.updateConfig(config: Configuration = configuration) {
+fun Resources.setConfig(config: Configuration) {
     config.setLocale(currentLocale)
     updateConfiguration(config, displayMetrics)
 }
 
-fun Resources.updateLocale(locale: Locale) {
+fun Resources.syncLocale() = setConfig(configuration)
+
+fun Resources.setLocale(locale: Locale) {
     configuration.setLocale(locale)
     updateConfiguration(configuration, displayMetrics)
 }
@@ -80,5 +83,5 @@ fun refreshLocale() {
         else -> Locale.forLanguageTag(localeConfig)
     }
     Locale.setDefault(currentLocale)
-    AssetHack.resource.updateConfig()
+    AppContext.resources.syncLocale()
 }

app/src/main/java/com/topjohnwu/magisk/ktx/XAndroid.kt

@@ -41,10 +41,10 @@ import androidx.lifecycle.lifecycleScope
 import androidx.transition.AutoTransition
 import androidx.transition.TransitionManager
 import com.topjohnwu.magisk.R
-import com.topjohnwu.magisk.core.AssetHack
 import com.topjohnwu.magisk.core.Const
 import com.topjohnwu.magisk.core.base.BaseActivity
 import com.topjohnwu.magisk.core.utils.currentLocale
+import com.topjohnwu.magisk.di.AppContext
 import com.topjohnwu.magisk.utils.DynamicClassLoader
 import com.topjohnwu.magisk.utils.Utils
 import com.topjohnwu.superuser.Shell
@@ -342,7 +342,7 @@ var TextView.precomputedText: CharSequence
     }
 
 fun Int.dpInPx(): Int {
-    val scale = AssetHack.resource.displayMetrics.density
+    val scale = AppContext.resources.displayMetrics.density
     return (this * scale + 0.5).toInt()
 }
 

app/src/main/java/com/topjohnwu/magisk/utils/MarkwonImagePlugin.kt

@@ -15,7 +15,7 @@ import android.widget.TextView
 import androidx.annotation.WorkerThread
 import com.caverock.androidsvg.SVG
 import com.caverock.androidsvg.SVGParseException
-import com.topjohnwu.magisk.core.AssetHack
+import com.topjohnwu.magisk.di.AppContext
 import com.topjohnwu.superuser.internal.WaitRunnable
 import io.noties.markwon.AbstractMarkwonPlugin
 import io.noties.markwon.MarkwonSpansFactory
@@ -216,7 +216,7 @@ class MarkwonImagePlugin(okHttp: OkHttpClient) : AbstractMarkwonPlugin() {
                 return PictureDrawable(picture)
             }
 
-            val density: Float = AssetHack.resource.displayMetrics.density
+            val density: Float = AppContext.resources.displayMetrics.density
 
             val width = (w * density + .5f).toInt()
             val height = (h * density + .5f).toInt()
@@ -226,7 +226,7 @@ class MarkwonImagePlugin(okHttp: OkHttpClient) : AbstractMarkwonPlugin() {
             canvas.scale(density, density)
             svg.renderToCanvas(canvas)
 
-            return BitmapDrawable(AssetHack.resource, bitmap)
+            return BitmapDrawable(AppContext.resources, bitmap)
         }
 
     }