Add v7.3.5 changelog

Fix #1912

.gitattributes

@@ -11,7 +11,7 @@
 *.bat text eol=crlf
 
 # Denote all files that are truly binary and should not be modified.
-chromeos/** binary
+tools/** binary
 *.jar binary
 *.exe binary
 *.apk binary

.gitmodules

@@ -19,3 +19,9 @@
 [submodule "nanopb"]
 	path = native/jni/external/nanopb
 	url = https://github.com/nanopb/nanopb.git
+[submodule "mincrypt"]
+	path = native/jni/external/mincrypt
+	url = https://github.com/topjohnwu/mincrypt.git
+[submodule "termux-elf-cleaner"]
+	path = tools/termux-elf-cleaner
+	url = https://github.com/termux/termux-elf-cleaner.git

README.MD

@@ -10,7 +10,7 @@ Furthermore, Magisk provides a **Systemless Interface** to alter the system (or
 
 ## Bug Reports
 
-**Make sure to install the latest [Canary Build](https://forum.xda-developers.com/apps/magisk/dev-magisk-canary-channel-bleeding-edge-t3839337) before reporting any bugs!** **DO NOT** report bugs that is already fixed upstream. Follow the instructions in the [Canary Channel XDA Thread](https://forum.xda-developers.com/apps/magisk/dev-magisk-canary-channel-bleeding-edge-t3839337), and report a bug either by opening an issue on GitHub or directly in the thread.
+**Make sure to install the latest [Canary Build](https://forum.xda-developers.com/apps/magisk/dev-magisk-canary-channel-bleeding-edge-t3839337) before reporting any bugs!** **DO NOT** report bugs that are already fixed upstream. Follow the instructions in the [Canary Channel XDA Thread](https://forum.xda-developers.com/apps/magisk/dev-magisk-canary-channel-bleeding-edge-t3839337), and report a bug either by [opening an issue on GitHub](https://github.com/topjohnwu/Magisk/issues) or directly in the thread.
 
 ## Building Environment Requirements
 

app/build.gradle

@@ -1,6 +1,6 @@
 apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-kapt'
 
 kapt {
@@ -16,51 +16,118 @@ android {
     defaultConfig {
         applicationId 'com.topjohnwu.magisk'
         vectorDrawables.useSupportLibrary = true
-        versionName configProps['appVersion']
-        versionCode configProps['appVersionCode'] as Integer
-        javaCompileOptions {
-            annotationProcessorOptions {
-                argument('butterknife.debuggable', 'false')
-            }
-        }
+        multiDexEnabled true
+        versionName props['appVersion']
+        versionCode props['appVersionCode'] as Integer
     }
 
     buildTypes {
         release {
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'),
+                    'proguard-rules.pro', 'proguard-kotlin.pro'
         }
     }
+
+    dataBinding {
+        enabled = true
+    }
+
+    packagingOptions {
+        exclude '/META-INF/*.version'
+        exclude '/META-INF/*.kotlin_module'
+        exclude '/META-INF/rxkotlin.properties'
+        exclude '/androidsupportmultidexversion.txt'
+        exclude '/org/bouncycastle/**'
+        exclude '/kotlin/**'
+        exclude '/kotlinx/**'
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+}
+
+androidExtensions {
+    experimental = true
 }
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation project(':net')
     implementation project(':shared')
     implementation project(':signing')
+
     implementation 'com.github.topjohnwu:jtar:1.0.0'
-    implementation 'net.sourceforge.streamsupport:android-retrostreams:1.7.0'
-    implementation 'com.github.sevar83:indeterminate-checkbox:1.0.5'
+    implementation 'com.jakewharton.timber:timber:4.7.1'
+    implementation 'com.ncapdevi:frag-nav:3.2.0'
+    implementation 'com.github.pwittchen:reactivenetwork-rx2:3.0.6'
 
-    def markwonVersion = '3.0.0'
-    implementation "ru.noties.markwon:core:${markwonVersion}"
-    implementation "ru.noties.markwon:html:${markwonVersion}"
-    implementation "ru.noties.markwon:image-svg:${markwonVersion}"
+    implementation 'io.reactivex.rxjava2:rxjava:2.2.13'
+    implementation 'io.reactivex.rxjava2:rxkotlin:2.4.0'
+    implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'
+
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:${vKotlin}"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:${vKotlin}"
+
+    def vBAdapt = '3.1.1'
+    def bindingAdapter = 'me.tatarka.bindingcollectionadapter2:bindingcollectionadapter'
+    implementation "${bindingAdapter}:${vBAdapt}"
+    implementation "${bindingAdapter}-recyclerview:${vBAdapt}"
+
+    def vMarkwon = '4.1.1'
+    implementation "io.noties.markwon:core:${vMarkwon}"
+    implementation "io.noties.markwon:html:${vMarkwon}"
+    implementation "io.noties.markwon:image:${vMarkwon}"
+    implementation 'com.caverock:androidsvg:1.4'
+
+    def vLibsu = '2.5.1'
+    implementation "com.github.topjohnwu.libsu:core:${vLibsu}"
+    implementation "com.github.topjohnwu.libsu:io:${vLibsu}"
+
+    def vKoin = "2.0.1"
+    implementation "org.koin:koin-core:${vKoin}"
+    implementation "org.koin:koin-android:${vKoin}"
+    implementation "org.koin:koin-androidx-viewmodel:${vKoin}"
+
+    def vRetrofit = '2.6.2'
+    implementation "com.squareup.retrofit2:retrofit:${vRetrofit}"
+    implementation "com.squareup.retrofit2:converter-moshi:${vRetrofit}"
+    implementation "com.squareup.retrofit2:converter-scalars:${vRetrofit}"
+    implementation "com.squareup.retrofit2:adapter-rxjava2:${vRetrofit}"
+
+    def vOkHttp = '3.12.6'
+    implementation "com.squareup.okhttp3:okhttp:${vOkHttp}"
+    implementation "com.squareup.okhttp3:logging-interceptor:${vOkHttp}"
+
+    def vMoshi = "1.8.0"
+    implementation "com.squareup.moshi:moshi:${vMoshi}"
+
+    def vKotshi = "2.0.1"
+    implementation "se.ansman.kotshi:api:${vKotshi}"
+    kapt "se.ansman.kotshi:compiler:${vKotshi}"
+
+    modules {
+        module('androidx.room:room-runtime') {
+            replacedBy('com.github.topjohnwu:room-runtime')
+        }
+    }
+    def vRoom = "2.2.0"
+    implementation "com.github.topjohnwu:room-runtime:${vRoom}"
+    kapt "androidx.room:room-compiler:${vRoom}"
+
+    def vNav = "2.1.0"
+    implementation "androidx.navigation:navigation-fragment-ktx:$vNav"
+    implementation "androidx.navigation:navigation-ui-ktx:$vNav"
 
-    def androidXVersion = "1.0.0"
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    implementation 'androidx.appcompat:appcompat:1.0.2'
-    implementation "androidx.preference:preference:${androidXVersion}"
-    implementation "androidx.recyclerview:recyclerview:${androidXVersion}"
-    implementation "androidx.cardview:cardview:${androidXVersion}"
-    implementation "com.google.android.material:material:${androidXVersion}"
-    implementation 'androidx.work:work-runtime:2.0.1'
-    implementation 'androidx.transition:transition:1.1.0-beta01'
-
-    def libsuVersion = '2.5.0'
-    implementation "com.github.topjohnwu.libsu:core:${libsuVersion}"
-    implementation "com.github.topjohnwu.libsu:io:${libsuVersion}"
-
-    def butterKnifeVersion = '10.1.0'
-    implementation "com.jakewharton:butterknife-runtime:${butterKnifeVersion}"
-    kapt "com.jakewharton:butterknife-compiler:${butterKnifeVersion}"
+    implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0-alpha03'
+    implementation 'androidx.preference:preference:1.1.0'
+    implementation 'androidx.recyclerview:recyclerview:1.1.0-beta05'
+    implementation 'androidx.cardview:cardview:1.0.0'
+    implementation 'androidx.work:work-runtime:2.2.0'
+    implementation 'androidx.transition:transition:1.2.0'
+    implementation 'androidx.multidex:multidex:2.0.1'
+    implementation 'androidx.core:core-ktx:1.1.0'
+    implementation 'com.google.android.material:material:1.1.0-beta01'
 }

app/proguard-kotlin.pro

@@ -0,0 +1,20 @@
+## So every class is case insensitive to avoid some bizare problems
+-dontusemixedcaseclassnames
+
+## If reflection issues come up uncomment this, that should temporarily fix it
+#-keep class kotlin.** { *; }
+#-keep class kotlin.Metadata { *; }
+#-keepclassmembers class kotlin.Metadata {
+#    public <methods>;
+#}
+
+## Never warn about Kotlin, it should work as-is
+-dontwarn kotlin.**
+
+## Removes runtime null checks - doesn't really matter if it crashes on kotlin or java NPE
+-assumenosideeffects class kotlin.jvm.internal.Intrinsics {
+    static void checkParameterIsNotNull(java.lang.Object, java.lang.String);
+}
+
+## Useless option for dex
+-dontpreverify

app/proguard-rules.pro

@@ -16,35 +16,26 @@
 #   public *;
 #}
 
-# BouncyCastle
--keep,allowoptimization class org.bouncycastle.jcajce.provider.asymmetric.rsa.**SHA1** { *; }
--keep,allowoptimization class org.bouncycastle.jcajce.provider.asymmetric.RSA** { *; }
--keep,allowoptimization class org.bouncycastle.jcajce.provider.digest.SHA1** { *; }
--dontwarn javax.naming.**
-
 # Snet
--keepclassmembers class com.topjohnwu.magisk.utils.ISafetyNetHelper { *; }
--keep,allowobfuscation interface com.topjohnwu.magisk.utils.ISafetyNetHelper$Callback
--keepclassmembers class * implements com.topjohnwu.magisk.utils.ISafetyNetHelper$Callback {
+-keepclassmembers class com.topjohnwu.magisk.utils.SafetyNetHelper { *; }
+-keep,allowobfuscation interface com.topjohnwu.magisk.utils.SafetyNetHelper$Callback
+-keepclassmembers class * implements com.topjohnwu.magisk.utils.SafetyNetHelper$Callback {
   void onResponse(int);
 }
 
+# Keep all fragment constructors
+-keepclassmembers class * extends androidx.fragment.app.Fragment {
+  public <init>(...);
+}
+
 # DelegateWorker
--keep,allowobfuscation class * extends com.topjohnwu.magisk.model.worker.DelegateWorker
+-keep,allowobfuscation class * extends com.topjohnwu.magisk.base.DelegateWorker
 
 # BootSigner
 -keepclassmembers class com.topjohnwu.signing.BootSigner { *; }
 
-# SVG
--dontwarn com.caverock.androidsvg.SVGAndroidRenderer
-
-# RetroStreams
--dontwarn java9.**
-
 # Strip logging
--assumenosideeffects class com.topjohnwu.magisk.utils.Logger {
-  public *** debug(...);
-}
+-assumenosideeffects class timber.log.Timber.Tree { *; }
 
 # Excessive obfuscation
 -repackageclasses 'a'

app/src/main/AndroidManifest.xml

@@ -3,15 +3,16 @@
     xmlns:tools="http://schemas.android.com/tools"
     package="com.topjohnwu.magisk">
 
+    <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.USE_FINGERPRINT" />
 
     <application
-        android:allowBackup="true"
         android:name="a.e"
-        android:theme="@style/AppTheme"
+        android:allowBackup="true"
+        android:theme="@style/MagiskTheme"
         android:usesCleartextTraffic="true"
         tools:ignore="UnusedAttribute,GoogleAppIndexingWarning">
 
@@ -35,16 +36,16 @@
             android:name="a.f"
             android:configChanges="keyboardHidden|orientation|screenSize"
             android:screenOrientation="nosensor"
-            android:theme="@style/AppTheme.NoDrawer" />
+            android:theme="@style/MagiskTheme.Flashing" />
 
         <!-- Superuser -->
 
         <activity
             android:name="a.m"
-            android:exported="false"
             android:directBootAware="true"
             android:excludeFromRecents="true"
-            android:theme="@style/SuRequest" />
+            android:exported="false"
+            android:theme="@style/MagiskTheme.SU" />
 
         <!-- Receiver -->
 
@@ -65,7 +66,8 @@
 
         <!-- Service -->
 
-        <service android:name="a.j" />
+        <service android:name="a.j"
+            android:exported="false" />
 
         <!-- Hardcode GMS version -->
         <meta-data
@@ -74,4 +76,4 @@
 
     </application>
 
-</manifest>
+</manifest>

app/src/main/java/a/j.java

@@ -1,7 +1,7 @@
 package a;
 
-import com.topjohnwu.magisk.model.download.DownloadModuleService;
+import com.topjohnwu.magisk.model.download.DownloadService;
 
-public class j extends DownloadModuleService {
+public class j extends DownloadService {
     /* stub */
 }

app/src/main/java/a/w.java

@@ -2,14 +2,14 @@ package a;
 
 import android.content.Context;
 
-import com.topjohnwu.magisk.model.worker.DelegateWorker;
-
-import java.lang.reflect.ParameterizedType;
-
 import androidx.annotation.NonNull;
 import androidx.work.Worker;
 import androidx.work.WorkerParameters;
 
+import com.topjohnwu.magisk.base.DelegateWorker;
+
+import java.lang.reflect.ParameterizedType;
+
 public abstract class w<T extends DelegateWorker> extends Worker {
 
     /* Wrapper class to workaround Proguard -keep class * extends Worker */
@@ -22,7 +22,7 @@ public abstract class w<T extends DelegateWorker> extends Worker {
         try {
             base = ((Class<T>) ((ParameterizedType) getClass().getGenericSuperclass())
                     .getActualTypeArguments()[0]).newInstance();
-            base.setActualWorker(this);
+            base.attachWorker(this);
         } catch (Exception ignored) {}
     }
 

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

@@ -1,101 +0,0 @@
-package com.topjohnwu.magisk;
-
-import android.app.Activity;
-import android.app.Application;
-import android.content.Context;
-import android.content.SharedPreferences;
-import android.content.res.Configuration;
-import android.os.AsyncTask;
-import android.os.Build;
-import android.os.Bundle;
-import android.preference.PreferenceManager;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.appcompat.app.AppCompatDelegate;
-
-import com.topjohnwu.magisk.data.database.MagiskDB;
-import com.topjohnwu.magisk.data.database.RepoDatabaseHelper;
-import com.topjohnwu.magisk.ui.base.BaseActivity;
-import com.topjohnwu.magisk.utils.LocaleManager;
-import com.topjohnwu.magisk.utils.RootUtils;
-import com.topjohnwu.net.Networking;
-import com.topjohnwu.superuser.Shell;
-
-import java.util.concurrent.ThreadPoolExecutor;
-
-public class App extends Application implements Application.ActivityLifecycleCallbacks {
-
-    public static App self;
-    public static Context deContext;
-    public static ThreadPoolExecutor THREAD_POOL;
-
-    // Global resources
-    public SharedPreferences prefs;
-    public MagiskDB mDB;
-    public RepoDatabaseHelper repoDB;
-    private volatile BaseActivity foreground;
-
-    static {
-        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
-        Shell.Config.setFlags(Shell.FLAG_MOUNT_MASTER | Shell.FLAG_USE_MAGISK_BUSYBOX);
-        Shell.Config.verboseLogging(BuildConfig.DEBUG);
-        Shell.Config.addInitializers(RootUtils.class);
-        Shell.Config.setTimeout(2);
-        THREAD_POOL = (ThreadPoolExecutor) AsyncTask.THREAD_POOL_EXECUTOR;
-    }
-
-    @Override
-    protected void attachBaseContext(Context base) {
-        super.attachBaseContext(base);
-        self = this;
-        deContext = base;
-        registerActivityLifecycleCallbacks(this);
-
-        if (Build.VERSION.SDK_INT >= 24) {
-            deContext = base.createDeviceProtectedStorageContext();
-            deContext.moveSharedPreferencesFrom(base,
-                    PreferenceManager.getDefaultSharedPreferencesName(base));
-        }
-        prefs = PreferenceManager.getDefaultSharedPreferences(deContext);
-        mDB = new MagiskDB(base);
-
-        Networking.init(base);
-        LocaleManager.setLocale(this);
-    }
-
-    @Override
-    public void onConfigurationChanged(@NonNull Configuration newConfig) {
-        super.onConfigurationChanged(newConfig);
-        LocaleManager.setLocale(this);
-    }
-
-    public static BaseActivity foreground() {
-        return self.foreground;
-    }
-
-    @Override
-    public void onActivityCreated(@NonNull Activity activity, @Nullable Bundle bundle) {}
-
-    @Override
-    public void onActivityStarted(@NonNull Activity activity) {}
-
-    @Override
-    public synchronized void onActivityResumed(@NonNull Activity activity) {
-        foreground = (BaseActivity) activity;
-    }
-
-    @Override
-    public synchronized void onActivityPaused(@NonNull Activity activity) {
-        foreground = null;
-    }
-
-    @Override
-    public void onActivityStopped(@NonNull Activity activity) {}
-
-    @Override
-    public void onActivitySaveInstanceState(@NonNull Activity activity, @NonNull Bundle bundle) {}
-
-    @Override
-    public void onActivityDestroyed(@NonNull Activity activity) {}
-}

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

@@ -0,0 +1,59 @@
+package com.topjohnwu.magisk
+
+import android.app.Application
+import android.content.Context
+import android.content.res.Configuration
+import androidx.appcompat.app.AppCompatDelegate
+import androidx.multidex.MultiDex
+import androidx.room.Room
+import androidx.work.impl.WorkDatabase
+import androidx.work.impl.WorkDatabase_Impl
+import com.topjohnwu.magisk.data.database.RepoDatabase
+import com.topjohnwu.magisk.data.database.RepoDatabase_Impl
+import com.topjohnwu.magisk.di.ActivityTracker
+import com.topjohnwu.magisk.di.koinModules
+import com.topjohnwu.magisk.extensions.get
+import com.topjohnwu.magisk.utils.LocaleManager
+import com.topjohnwu.magisk.utils.RootUtils
+import com.topjohnwu.superuser.Shell
+import org.koin.android.ext.koin.androidContext
+import org.koin.core.context.startKoin
+import timber.log.Timber
+
+open class App : Application() {
+
+    init {
+        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
+        Shell.Config.setFlags(Shell.FLAG_MOUNT_MASTER or Shell.FLAG_USE_MAGISK_BUSYBOX)
+        Shell.Config.verboseLogging(BuildConfig.DEBUG)
+        Shell.Config.addInitializers(RootUtils::class.java)
+        Shell.Config.setTimeout(2)
+        Room.setFactory {
+            when (it) {
+                WorkDatabase::class.java -> WorkDatabase_Impl()
+                RepoDatabase::class.java -> RepoDatabase_Impl()
+                else -> null
+            }
+        }
+    }
+
+    override fun attachBaseContext(base: Context) {
+        super.attachBaseContext(base)
+        if (BuildConfig.DEBUG)
+            MultiDex.install(base)
+        Timber.plant(Timber.DebugTree())
+
+        startKoin {
+            androidContext(this@App)
+            modules(koinModules)
+        }
+
+        registerActivityLifecycleCallbacks(get<ActivityTracker>())
+        LocaleManager.setLocale(this)
+    }
+
+    override fun onConfigurationChanged(newConfig: Configuration) {
+        super.onConfigurationChanged(newConfig)
+        LocaleManager.setLocale(this)
+    }
+}

app/src/main/java/com/topjohnwu/magisk/ClassMap.java

@@ -1,31 +0,0 @@
-package com.topjohnwu.magisk;
-
-import com.topjohnwu.magisk.model.download.DownloadModuleService;
-import com.topjohnwu.magisk.model.receiver.GeneralReceiver;
-import com.topjohnwu.magisk.model.update.UpdateCheckService;
-import com.topjohnwu.magisk.ui.MainActivity;
-import com.topjohnwu.magisk.ui.SplashActivity;
-import com.topjohnwu.magisk.ui.flash.FlashActivity;
-import com.topjohnwu.magisk.ui.surequest.SuRequestActivity;
-
-import java.util.HashMap;
-import java.util.Map;
-
-public class ClassMap {
-    private static Map<Class, Class> classMap = new HashMap<>();
-
-    static {
-        classMap.put(App.class, a.e.class);
-        classMap.put(MainActivity.class, a.b.class);
-        classMap.put(SplashActivity.class, a.c.class);
-        classMap.put(FlashActivity.class, a.f.class);
-        classMap.put(UpdateCheckService.class, a.g.class);
-        classMap.put(GeneralReceiver.class, a.h.class);
-        classMap.put(DownloadModuleService.class, a.j.class);
-        classMap.put(SuRequestActivity.class, a.m.class);
-    }
-    
-    public static <T> Class<T> get(Class c) {
-        return classMap.get(c);
-    }
-}

app/src/main/java/com/topjohnwu/magisk/ClassMap.kt

@@ -0,0 +1,26 @@
+package com.topjohnwu.magisk
+
+import com.topjohnwu.magisk.model.download.DownloadService
+import com.topjohnwu.magisk.model.receiver.GeneralReceiver
+import com.topjohnwu.magisk.model.update.UpdateCheckService
+import com.topjohnwu.magisk.ui.MainActivity
+import com.topjohnwu.magisk.ui.SplashActivity
+import com.topjohnwu.magisk.ui.flash.FlashActivity
+import com.topjohnwu.magisk.ui.surequest.SuRequestActivity
+
+object ClassMap {
+    private val map = mapOf(
+        App::class.java to a.e::class.java,
+        MainActivity::class.java to a.b::class.java,
+        SplashActivity::class.java to a.c::class.java,
+        FlashActivity::class.java to a.f::class.java,
+        UpdateCheckService::class.java to a.g::class.java,
+        GeneralReceiver::class.java to a.h::class.java,
+        DownloadService::class.java to a.j::class.java,
+        SuRequestActivity::class.java to a.m::class.java
+    )
+
+    operator fun <T : Class<*>>get(c: Class<*>): T {
+        return map.getOrElse(c) { throw IllegalArgumentException() } as T
+    }
+}

app/src/main/java/com/topjohnwu/magisk/Config.kt

@@ -0,0 +1,208 @@
+package com.topjohnwu.magisk
+
+import android.content.Context
+import android.content.SharedPreferences
+import android.os.Environment
+import android.util.Xml
+import androidx.core.content.edit
+import com.topjohnwu.magisk.data.database.SettingsDao
+import com.topjohnwu.magisk.data.database.StringDao
+import com.topjohnwu.magisk.data.repository.DBConfig
+import com.topjohnwu.magisk.di.Protected
+import com.topjohnwu.magisk.extensions.get
+import com.topjohnwu.magisk.extensions.inject
+import com.topjohnwu.magisk.extensions.packageName
+import com.topjohnwu.magisk.model.preference.PreferenceModel
+import com.topjohnwu.magisk.utils.FingerprintHelper
+import com.topjohnwu.magisk.utils.Utils
+import com.topjohnwu.superuser.Shell
+import com.topjohnwu.superuser.io.SuFile
+import com.topjohnwu.superuser.io.SuFileInputStream
+import org.xmlpull.v1.XmlPullParser
+import java.io.File
+
+object Config : PreferenceModel, DBConfig {
+
+    override val stringDao: StringDao by inject()
+    override val settingsDao: SettingsDao by inject()
+    override val context: Context by inject(Protected)
+
+    object Key {
+        // db configs
+        const val ROOT_ACCESS = "root_access"
+        const val SU_MULTIUSER_MODE = "multiuser_mode"
+        const val SU_MNT_NS = "mnt_ns"
+        const val SU_MANAGER = "requester"
+        const val SU_FINGERPRINT = "su_fingerprint"
+
+        // prefs
+        const val SU_REQUEST_TIMEOUT = "su_request_timeout"
+        const val SU_AUTO_RESPONSE = "su_auto_response"
+        const val SU_NOTIFICATION = "su_notification"
+        const val SU_REAUTH = "su_reauth"
+        const val CHECK_UPDATES = "check_update"
+        const val UPDATE_CHANNEL = "update_channel"
+        const val CUSTOM_CHANNEL = "custom_channel"
+        const val LOCALE = "locale"
+        const val DARK_THEME = "dark_theme"
+        const val REPO_ORDER = "repo_order"
+        const val SHOW_SYSTEM_APP = "show_system"
+        const val DOWNLOAD_PATH = "download_path"
+
+        // system state
+        const val MAGISKHIDE = "magiskhide"
+        const val COREONLY = "disable"
+    }
+
+    object Value {
+        // Update channels
+        const val DEFAULT_CHANNEL = -1
+        const val STABLE_CHANNEL = 0
+        const val BETA_CHANNEL = 1
+        const val CUSTOM_CHANNEL = 2
+        const val CANARY_CHANNEL = 3
+        const val CANARY_DEBUG_CHANNEL = 4
+
+        // root access mode
+        const val ROOT_ACCESS_DISABLED = 0
+        const val ROOT_ACCESS_APPS_ONLY = 1
+        const val ROOT_ACCESS_ADB_ONLY = 2
+        const val ROOT_ACCESS_APPS_AND_ADB = 3
+
+        // su multiuser
+        const val MULTIUSER_MODE_OWNER_ONLY = 0
+        const val MULTIUSER_MODE_OWNER_MANAGED = 1
+        const val MULTIUSER_MODE_USER = 2
+
+        // su mnt ns
+        const val NAMESPACE_MODE_GLOBAL = 0
+        const val NAMESPACE_MODE_REQUESTER = 1
+        const val NAMESPACE_MODE_ISOLATE = 2
+
+        // su notification
+        const val NO_NOTIFICATION = 0
+        const val NOTIFICATION_TOAST = 1
+
+        // su auto response
+        const val SU_PROMPT = 0
+        const val SU_AUTO_DENY = 1
+        const val SU_AUTO_ALLOW = 2
+
+        // su timeout
+        val TIMEOUT_LIST = intArrayOf(0, -1, 10, 20, 30, 60)
+
+        // repo order
+        const val ORDER_NAME = 0
+        const val ORDER_DATE = 1
+    }
+
+    private val defaultChannel =
+        if (Utils.isCanary) Value.CANARY_DEBUG_CHANNEL
+        else Value.DEFAULT_CHANNEL
+
+    var downloadPath by preference(Key.DOWNLOAD_PATH, Environment.DIRECTORY_DOWNLOADS)
+    var repoOrder by preference(Key.REPO_ORDER, Value.ORDER_DATE)
+
+    var suDefaultTimeout by preferenceStrInt(Key.SU_REQUEST_TIMEOUT, 10)
+    var suAutoReponse by preferenceStrInt(Key.SU_AUTO_RESPONSE, Value.SU_PROMPT)
+    var suNotification by preferenceStrInt(Key.SU_NOTIFICATION, Value.NOTIFICATION_TOAST)
+    var updateChannel by preferenceStrInt(Key.UPDATE_CHANNEL, defaultChannel)
+
+    var darkTheme by preference(Key.DARK_THEME, true)
+    var suReAuth by preference(Key.SU_REAUTH, false)
+    var checkUpdate by preference(Key.CHECK_UPDATES, true)
+    var magiskHide by preference(Key.MAGISKHIDE, true)
+    var coreOnly by preference(Key.COREONLY, false)
+    var showSystemApp by preference(Key.SHOW_SYSTEM_APP, false)
+
+    var customChannelUrl by preference(Key.CUSTOM_CHANNEL, "")
+    var locale by preference(Key.LOCALE, "")
+
+    var rootMode by dbSettings(Key.ROOT_ACCESS, Value.ROOT_ACCESS_APPS_AND_ADB)
+    var suMntNamespaceMode by dbSettings(Key.SU_MNT_NS, Value.NAMESPACE_MODE_REQUESTER)
+    var suMultiuserMode by dbSettings(Key.SU_MULTIUSER_MODE, Value.MULTIUSER_MODE_OWNER_ONLY)
+    var suFingerprint by dbSettings(Key.SU_FINGERPRINT, false)
+    var suManager by dbStrings(Key.SU_MANAGER, "", true)
+
+    // Always return a path in external storage where we can write
+    val downloadDirectory get() =
+        Utils.ensureDownloadPath(downloadPath) ?: get<Context>().getExternalFilesDir(null)!!
+
+    fun initialize() = prefs.edit {
+        parsePrefs(this)
+
+        if (!prefs.contains(Key.UPDATE_CHANNEL))
+            putString(Key.UPDATE_CHANNEL, defaultChannel.toString())
+
+        // Get actual state
+        putBoolean(Key.COREONLY, Const.MAGISK_DISABLE_FILE.exists())
+
+        // Write database configs
+        putString(Key.ROOT_ACCESS, rootMode.toString())
+        putString(Key.SU_MNT_NS, suMntNamespaceMode.toString())
+        putString(Key.SU_MULTIUSER_MODE, suMultiuserMode.toString())
+        putBoolean(Key.SU_FINGERPRINT, FingerprintHelper.useFingerprint())
+    }
+
+    private fun parsePrefs(editor: SharedPreferences.Editor) = editor.apply {
+        val config = SuFile.open("/data/adb", Const.MANAGER_CONFIGS)
+        if (config.exists()) runCatching {
+            val input = SuFileInputStream(config).buffered()
+            val parser = Xml.newPullParser()
+            parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false)
+            parser.setInput(input, "UTF-8")
+            parser.nextTag()
+            parser.require(XmlPullParser.START_TAG, null, "map")
+            while (parser.next() != XmlPullParser.END_TAG) {
+                if (parser.eventType != XmlPullParser.START_TAG)
+                    continue
+                val key: String = parser.getAttributeValue(null, "name")
+                fun value() = parser.getAttributeValue(null, "value")!!
+                when (parser.name) {
+                    "string" -> {
+                        parser.require(XmlPullParser.START_TAG, null, "string")
+                        putString(key, parser.nextText())
+                        parser.require(XmlPullParser.END_TAG, null, "string")
+                    }
+                    "boolean" -> {
+                        parser.require(XmlPullParser.START_TAG, null, "boolean")
+                        putBoolean(key, value().toBoolean())
+                        parser.nextTag()
+                        parser.require(XmlPullParser.END_TAG, null, "boolean")
+                    }
+                    "int" -> {
+                        parser.require(XmlPullParser.START_TAG, null, "int")
+                        putInt(key, value().toInt())
+                        parser.nextTag()
+                        parser.require(XmlPullParser.END_TAG, null, "int")
+                    }
+                    "long" -> {
+                        parser.require(XmlPullParser.START_TAG, null, "long")
+                        putLong(key, value().toLong())
+                        parser.nextTag()
+                        parser.require(XmlPullParser.END_TAG, null, "long")
+                    }
+                    "float" -> {
+                        parser.require(XmlPullParser.START_TAG, null, "int")
+                        putFloat(key, value().toFloat())
+                        parser.nextTag()
+                        parser.require(XmlPullParser.END_TAG, null, "int")
+                    }
+                    else -> parser.next()
+                }
+            }
+            config.delete()
+        }
+    }
+
+    fun export() {
+        // Flush prefs to disk
+        prefs.edit().commit()
+        val xml = File(
+            "${get<Context>(Protected).filesDir.parent}/shared_prefs",
+            "${packageName}_preferences.xml"
+        )
+        Shell.su("cat $xml > /data/adb/${Const.MANAGER_CONFIGS}").exec()
+    }
+
+}

app/src/main/java/com/topjohnwu/magisk/Const.java

@@ -1,99 +0,0 @@
-package com.topjohnwu.magisk;
-
-import android.os.Environment;
-import android.os.Process;
-
-import java.io.File;
-
-public class Const {
-
-    public static final String DEBUG_TAG = "MagiskManager";
-
-    // APK content
-    public static final String ANDROID_MANIFEST = "AndroidManifest.xml";
-
-    public static final String SU_KEYSTORE_KEY = "su_key";
-
-    // Paths
-    public static final String MAGISK_PATH = "/sbin/.magisk/img";
-    public static final File EXTERNAL_PATH;
-    public static File MAGISK_DISABLE_FILE;
-
-    static {
-        MAGISK_DISABLE_FILE = new File("xxx");
-        EXTERNAL_PATH = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
-        EXTERNAL_PATH.mkdirs();
-    }
-
-    public static final String TMP_FOLDER_PATH = "/dev/tmp";
-    public static final String MAGISK_LOG = "/cache/magisk.log";
-    public static final String MANAGER_CONFIGS = ".tmp.magisk.config";
-
-    // Versions
-    public static final int UPDATE_SERVICE_VER = 1;
-    public static final int SNET_EXT_VER = 12;
-
-    public static final int USER_ID = Process.myUid() / 100000;
-
-    public static final class MAGISK_VER {
-        public static final int MIN_SUPPORT = 18000;
-    }
-
-    public static class ID {
-        public static final int FETCH_ZIP = 2;
-        public static final int SELECT_BOOT = 3;
-
-        // notifications
-        public static final int MAGISK_UPDATE_NOTIFICATION_ID = 4;
-        public static final int APK_UPDATE_NOTIFICATION_ID = 5;
-        public static final int DTBO_NOTIFICATION_ID = 7;
-        public static final int HIDE_MANAGER_NOTIFICATION_ID = 8;
-        public static final String UPDATE_NOTIFICATION_CHANNEL = "update";
-        public static final String PROGRESS_NOTIFICATION_CHANNEL = "progress";
-        public static final String CHECK_MAGISK_UPDATE_WORKER_ID = "magisk_update";
-    }
-
-    public static class Url {
-        private static String getRaw(String where, String name) {
-            return String.format("https://raw.githubusercontent.com/topjohnwu/magisk_files/%s/%s", where, name);
-        }
-        public static final String STABLE_URL = getRaw("master", "stable.json");
-        public static final String BETA_URL = getRaw("master", "beta.json");
-        public static final String CANARY_URL = getRaw("master", "canary_builds/release.json");
-        public static final String CANARY_DEBUG_URL = getRaw("master", "canary_builds/canary.json");
-        public static final String REPO_URL = "https://api.github.com/users/Magisk-Modules-Repo/repos?per_page=100&sort=pushed&page=%d";
-        public static final String FILE_URL = "https://raw.githubusercontent.com/Magisk-Modules-Repo/%s/master/%s";
-        public static final String ZIP_URL = "https://github.com/Magisk-Modules-Repo/%s/archive/master.zip";
-        public static final String MODULE_INSTALLER = "https://raw.githubusercontent.com/topjohnwu/Magisk/master/scripts/module_installer.sh";
-        public static final String PAYPAL_URL = "https://www.paypal.me/topjohnwu";
-        public static final String PATREON_URL = "https://www.patreon.com/topjohnwu";
-        public static final String TWITTER_URL = "https://twitter.com/topjohnwu";
-        public static final String XDA_THREAD = "http://forum.xda-developers.com/showthread.php?t=3432382";
-        public static final String SOURCE_CODE_URL = "https://github.com/topjohnwu/Magisk";
-        public static final String SNET_URL = getRaw("b66b1a914978e5f4c4bbfd74a59f4ad371bac107", "snet.apk");
-        public static final String BOOTCTL_URL = getRaw("9c5dfc1b8245c0b5b524901ef0ff0f8335757b77", "bootctl");
-    }
-
-    public static class Key {
-        // others
-        public static final String LINK_KEY = "Link";
-        public static final String IF_NONE_MATCH = "If-None-Match";
-        // intents
-        public static final String OPEN_SECTION = "section";
-        public static final String INTENT_SET_NAME = "filename";
-        public static final String INTENT_SET_LINK = "link";
-        public static final String FLASH_ACTION = "action";
-        public static final String BROADCAST_MANAGER_UPDATE = "manager_update";
-        public static final String BROADCAST_REBOOT = "reboot";
-    }
-
-    public static class Value {
-        public static final String FLASH_ZIP = "flash";
-        public static final String PATCH_FILE = "patch";
-        public static final String FLASH_MAGISK = "magisk";
-        public static final String FLASH_INACTIVE_SLOT = "slot";
-        public static final String UNINSTALL = "uninstall";
-    }
-
-
-}

app/src/main/java/com/topjohnwu/magisk/Const.kt

@@ -0,0 +1,78 @@
+package com.topjohnwu.magisk
+
+import android.os.Process
+import java.io.File
+
+object Const {
+
+    // Paths
+    const val MAGISK_PATH = "/sbin/.magisk/img"
+    var MAGISK_DISABLE_FILE = File("xxx")
+    const val TMP_FOLDER_PATH = "/dev/tmp"
+    const val MAGISK_LOG = "/cache/magisk.log"
+
+    // Versions
+    const val SNET_EXT_VER = 13
+    const val SNET_REVISION = "a6c47f86f10b310358afa9dbe837037dd5d561df"
+    const val BOOTCTL_REVISION = "a6c47f86f10b310358afa9dbe837037dd5d561df"
+
+    // Misc
+    const val ANDROID_MANIFEST = "AndroidManifest.xml"
+    const val MAGISK_INSTALL_LOG_FILENAME = "magisk_install_log_%s.log"
+    const val MANAGER_CONFIGS = ".tmp.magisk.config"
+    val USER_ID = Process.myUid() / 100000
+
+    object MagiskVersion {
+        const val MIN_SUPPORT = 18000
+    }
+
+    object ID {
+        const val FETCH_ZIP = 2
+        const val SELECT_BOOT = 3
+
+        // notifications
+        const val MAGISK_UPDATE_NOTIFICATION_ID = 4
+        const val APK_UPDATE_NOTIFICATION_ID = 5
+        const val DTBO_NOTIFICATION_ID = 7
+        const val HIDE_MANAGER_NOTIFICATION_ID = 8
+        const val UPDATE_NOTIFICATION_CHANNEL = "update"
+        const val PROGRESS_NOTIFICATION_CHANNEL = "progress"
+        const val CHECK_MAGISK_UPDATE_WORKER_ID = "magisk_update"
+    }
+
+    object Url {
+        const val ZIP_URL = "https://github.com/Magisk-Modules-Repo/%s/archive/master.zip"
+        const val PAYPAL_URL = "https://www.paypal.me/topjohnwu"
+        const val PATREON_URL = "https://www.patreon.com/topjohnwu"
+        const val TWITTER_URL = "https://twitter.com/topjohnwu"
+        const val XDA_THREAD = "http://forum.xda-developers.com/showthread.php?t=3432382"
+        const val SOURCE_CODE_URL = "https://github.com/topjohnwu/Magisk"
+
+        const val GITHUB_RAW_URL = "https://raw.githubusercontent.com/"
+        const val GITHUB_API_URL = "https://api.github.com/users/Magisk-Modules-Repo/"
+    }
+
+    object Key {
+        // others
+        const val LINK_KEY = "Link"
+        const val IF_NONE_MATCH = "If-None-Match"
+        const val ETAG_KEY = "ETag"
+        // intents
+        const val OPEN_SECTION = "section"
+        const val INTENT_SET_APP = "app_json"
+        const val FLASH_ACTION = "action"
+        const val FLASH_DATA = "additional_data"
+        const val DISMISS_ID = "dismiss_id"
+        const val BROADCAST_MANAGER_UPDATE = "manager_update"
+        const val BROADCAST_REBOOT = "reboot"
+    }
+
+    object Value {
+        const val FLASH_ZIP = "flash"
+        const val PATCH_FILE = "patch"
+        const val FLASH_MAGISK = "magisk"
+        const val FLASH_INACTIVE_SLOT = "slot"
+        const val UNINSTALL = "uninstall"
+    }
+
+}

app/src/main/java/com/topjohnwu/magisk/Info.kt

@@ -0,0 +1,26 @@
+package com.topjohnwu.magisk
+
+import com.topjohnwu.magisk.model.entity.UpdateInfo
+import com.topjohnwu.superuser.Shell
+import com.topjohnwu.superuser.ShellUtils
+
+object Info {
+
+    var magiskVersionCode = -1
+
+    var magiskVersionString = ""
+
+    var remote = UpdateInfo()
+
+    var keepVerity = false
+    var keepEnc = false
+    var recovery = false
+
+    fun loadMagiskInfo() {
+        runCatching {
+            magiskVersionString = ShellUtils.fastCmd("magisk -v").split(":".toRegex())[0]
+            magiskVersionCode = ShellUtils.fastCmd("magisk -V").toInt()
+            Config.magiskHide = Shell.su("magiskhide --status").exec().isSuccess
+        }
+    }
+}

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

@@ -0,0 +1,123 @@
+package com.topjohnwu.magisk.base
+
+import android.Manifest
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.content.res.Configuration
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatDelegate
+import androidx.collection.SparseArrayCompat
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
+import androidx.databinding.DataBindingUtil
+import androidx.databinding.ViewDataBinding
+import com.topjohnwu.magisk.BR
+import com.topjohnwu.magisk.Config
+import com.topjohnwu.magisk.base.viewmodel.BaseViewModel
+import com.topjohnwu.magisk.extensions.set
+import com.topjohnwu.magisk.model.events.EventHandler
+import com.topjohnwu.magisk.model.permissions.PermissionRequestBuilder
+import com.topjohnwu.magisk.utils.LocaleManager
+import com.topjohnwu.magisk.utils.currentLocale
+import kotlin.random.Random
+
+typealias RequestCallback = BaseActivity<*, *>.(Int, Intent?) -> Unit
+
+abstract class BaseActivity<ViewModel : BaseViewModel, Binding : ViewDataBinding> :
+        AppCompatActivity(), EventHandler {
+
+    protected lateinit var binding: Binding
+    protected abstract val layoutRes: Int
+    protected abstract val viewModel: ViewModel
+    protected open val snackbarView get() = binding.root
+    protected open val navHostId: Int = 0
+    protected open val defaultPosition: Int = 0
+
+    private val resultCallbacks by lazy { SparseArrayCompat<RequestCallback>() }
+
+    init {
+        val theme = if (Config.darkTheme) {
+            AppCompatDelegate.MODE_NIGHT_YES
+        } else {
+            AppCompatDelegate.MODE_NIGHT_NO
+        }
+        AppCompatDelegate.setDefaultNightMode(theme)
+    }
+
+    override fun applyOverrideConfiguration(config: Configuration?) {
+        // Force applying our preferred local
+        config?.setLocale(currentLocale)
+        super.applyOverrideConfiguration(config)
+    }
+
+    override fun attachBaseContext(base: Context) {
+        super.attachBaseContext(LocaleManager.getLocaleContext(base))
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        viewModel.viewEvents.observe(this, viewEventObserver)
+
+        binding = DataBindingUtil.setContentView<Binding>(this, layoutRes).apply {
+            setVariable(BR.viewModel, viewModel)
+            lifecycleOwner = this@BaseActivity
+        }
+    }
+
+    fun withPermissions(vararg permissions: String, builder: PermissionRequestBuilder.() -> Unit) {
+        val request = PermissionRequestBuilder().apply(builder).build()
+        val ungranted = permissions.filter {
+            ContextCompat.checkSelfPermission(this, it) != PackageManager.PERMISSION_GRANTED
+        }
+
+        if (ungranted.isEmpty()) {
+            request.onSuccess()
+        } else {
+            val requestCode = Random.nextInt(256, 512)
+            resultCallbacks[requestCode] =  { result, _ ->
+                if (result > 0)
+                    request.onSuccess()
+                else
+                    request.onFailure()
+            }
+            ActivityCompat.requestPermissions(this, ungranted.toTypedArray(), requestCode)
+        }
+    }
+
+    fun withExternalRW(builder: PermissionRequestBuilder.() -> Unit) {
+        withPermissions(Manifest.permission.WRITE_EXTERNAL_STORAGE, builder = builder)
+    }
+
+    override fun onRequestPermissionsResult(
+            requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
+        var success = true
+        for (res in grantResults) {
+            if (res != PackageManager.PERMISSION_GRANTED) {
+                success = false
+                break
+            }
+        }
+        resultCallbacks[requestCode]?.apply {
+            resultCallbacks.remove(requestCode)
+            invoke(this@BaseActivity, if (success) 1 else -1, null)
+        }
+
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+        resultCallbacks[requestCode]?.apply {
+            resultCallbacks.remove(requestCode)
+            invoke(this@BaseActivity, resultCode, data)
+        }
+    }
+
+    fun startActivityForResult(intent: Intent, requestCode: Int, listener: RequestCallback) {
+        resultCallbacks[requestCode] = listener
+        startActivityForResult(intent, requestCode)
+    }
+
+}

app/src/main/java/com/topjohnwu/magisk/base/BaseFragment.kt

@@ -0,0 +1,50 @@
+package com.topjohnwu.magisk.base
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.annotation.CallSuper
+import androidx.databinding.DataBindingUtil
+import androidx.databinding.ViewDataBinding
+import androidx.fragment.app.Fragment
+import com.topjohnwu.magisk.BR
+import com.topjohnwu.magisk.base.viewmodel.BaseViewModel
+import com.topjohnwu.magisk.model.events.EventHandler
+import com.topjohnwu.magisk.model.events.ViewEvent
+
+abstract class BaseFragment<ViewModel : BaseViewModel, Binding : ViewDataBinding> :
+    Fragment(), EventHandler {
+
+    protected val activity get() = requireActivity() as BaseActivity<*, *>
+    protected lateinit var binding: Binding
+    protected abstract val layoutRes: Int
+    protected abstract val viewModel: ViewModel
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        viewModel.viewEvents.observe(this, viewEventObserver)
+    }
+
+    override fun onCreateView(
+            inflater: LayoutInflater,
+            container: ViewGroup?,
+            savedInstanceState: Bundle?
+    ): View? {
+        binding = DataBindingUtil.inflate<Binding>(inflater, layoutRes, container, false).apply {
+            setVariable(BR.viewModel, viewModel)
+            lifecycleOwner = this@BaseFragment
+        }
+
+        return binding.root
+    }
+
+    @CallSuper
+    override fun onEventDispatched(event: ViewEvent) {
+        super.onEventDispatched(event)
+        activity.onEventDispatched(event)
+    }
+
+    open fun onBackPressed(): Boolean = false
+
+}

app/src/main/java/com/topjohnwu/magisk/base/BasePreferenceFragment.kt

@@ -0,0 +1,56 @@
+package com.topjohnwu.magisk.base
+
+import android.annotation.SuppressLint
+import android.content.SharedPreferences
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.preference.*
+import androidx.recyclerview.widget.RecyclerView
+import org.koin.android.ext.android.inject
+
+abstract class BasePreferenceFragment : PreferenceFragmentCompat(),
+    SharedPreferences.OnSharedPreferenceChangeListener {
+
+    protected val prefs: SharedPreferences by inject()
+    protected val activity get() = requireActivity() as BaseActivity<*, *>
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        val v = super.onCreateView(inflater, container, savedInstanceState)
+        prefs.registerOnSharedPreferenceChangeListener(this)
+        return v
+    }
+
+    override fun onDestroyView() {
+        prefs.unregisterOnSharedPreferenceChangeListener(this)
+        super.onDestroyView()
+    }
+
+    private fun setAllPreferencesToAvoidHavingExtraSpace(preference: Preference) {
+        preference.isIconSpaceReserved = false
+        if (preference is PreferenceGroup)
+            for (i in 0 until preference.preferenceCount)
+                setAllPreferencesToAvoidHavingExtraSpace(preference.getPreference(i))
+    }
+
+    override fun setPreferenceScreen(preferenceScreen: PreferenceScreen?) {
+        if (preferenceScreen != null)
+            setAllPreferencesToAvoidHavingExtraSpace(preferenceScreen)
+        super.setPreferenceScreen(preferenceScreen)
+    }
+
+    override fun onCreateAdapter(preferenceScreen: PreferenceScreen?): RecyclerView.Adapter<*> =
+            object : PreferenceGroupAdapter(preferenceScreen) {
+                @SuppressLint("RestrictedApi")
+                override fun onPreferenceHierarchyChange(preference: Preference?) {
+                    if (preference != null)
+                        setAllPreferencesToAvoidHavingExtraSpace(preference)
+                    super.onPreferenceHierarchyChange(preference)
+                }
+            }
+}

app/src/main/java/com/topjohnwu/magisk/base/DelegateWorker.kt

@@ -0,0 +1,59 @@
+package com.topjohnwu.magisk.base
+
+import android.content.Context
+import android.net.Network
+import android.net.Uri
+import androidx.annotation.MainThread
+import androidx.annotation.RequiresApi
+import androidx.work.Data
+import androidx.work.ListenableWorker
+import com.google.common.util.concurrent.ListenableFuture
+import java.util.*
+
+abstract class DelegateWorker {
+
+    private lateinit var worker: ListenableWorker
+
+    val applicationContext: Context
+        get() = worker.applicationContext
+
+    val id: UUID
+        get() = worker.id
+
+    val inputData: Data
+        get() = worker.inputData
+
+    val tags: Set<String>
+        get() = worker.tags
+
+    val triggeredContentUris: List<Uri>
+        @RequiresApi(24)
+        get() = worker.triggeredContentUris
+
+    val triggeredContentAuthorities: List<String>
+        @RequiresApi(24)
+        get() = worker.triggeredContentAuthorities
+
+    val network: Network?
+        @RequiresApi(28)
+        get() = worker.network
+
+    val runAttemptCount: Int
+        get() = worker.runAttemptCount
+
+    val isStopped: Boolean
+        get() = worker.isStopped
+
+    abstract fun doWork(): ListenableWorker.Result
+
+    fun onStopped() {}
+
+    fun attachWorker(w: ListenableWorker) {
+        worker = w
+    }
+
+    @MainThread
+    fun startWork(): ListenableFuture<ListenableWorker.Result> {
+        return worker.startWork()
+    }
+}

app/src/main/java/com/topjohnwu/magisk/base/viewmodel/BaseViewModel.kt

@@ -0,0 +1,39 @@
+package com.topjohnwu.magisk.base.viewmodel
+
+import android.app.Activity
+import com.github.pwittchen.reactivenetwork.library.rx2.ReactiveNetwork
+import com.topjohnwu.magisk.extensions.doOnSubscribeUi
+import com.topjohnwu.magisk.extensions.get
+import com.topjohnwu.magisk.extensions.subscribeK
+import com.topjohnwu.magisk.model.events.BackPressEvent
+import com.topjohnwu.magisk.model.events.PermissionEvent
+import com.topjohnwu.magisk.model.events.ViewActionEvent
+import com.topjohnwu.magisk.utils.KObservableField
+import io.reactivex.Observable
+import io.reactivex.subjects.PublishSubject
+
+
+abstract class BaseViewModel(
+    initialState: State = State.LOADING
+) : LoadingViewModel(initialState) {
+
+    val isConnected = KObservableField(false)
+
+    init {
+        ReactiveNetwork.observeNetworkConnectivity(get())
+            .subscribeK { isConnected.value = it.available() }
+            .add()
+    }
+
+    fun withView(action: Activity.() -> Unit) {
+        ViewActionEvent(action).publish()
+    }
+
+    fun withPermissions(vararg permissions: String): Observable<Boolean> {
+        val subject = PublishSubject.create<Boolean>()
+        return subject.doOnSubscribeUi { PermissionEvent(permissions.toList(), subject).publish() }
+    }
+
+    fun back() = BackPressEvent().publish()
+
+}

app/src/main/java/com/topjohnwu/magisk/base/viewmodel/LoadingViewModel.kt

@@ -0,0 +1,78 @@
+package com.topjohnwu.magisk.base.viewmodel
+
+import androidx.databinding.Bindable
+import com.topjohnwu.magisk.BR
+import io.reactivex.*
+
+abstract class LoadingViewModel(defaultState: State = State.LOADING) :
+    StatefulViewModel<LoadingViewModel.State>(defaultState) {
+
+    val loading @Bindable get() = state == State.LOADING
+    val loaded @Bindable get() = state == State.LOADED
+    val loadingFailed @Bindable get() = state == State.LOADING_FAILED
+
+    @Deprecated(
+        "Direct access is recommended since 0.2. This access method will be removed in 1.0",
+        ReplaceWith("state = State.LOADING", "com.topjohnwu.magisk.base.viewmodel.LoadingViewModel.State"),
+        DeprecationLevel.WARNING
+    )
+    fun setLoading() {
+        state = State.LOADING
+    }
+
+    @Deprecated(
+        "Direct access is recommended since 0.2. This access method will be removed in 1.0",
+        ReplaceWith("state = State.LOADED", "com.topjohnwu.magisk.base.viewmodel.LoadingViewModel.State"),
+        DeprecationLevel.WARNING
+    )
+    fun setLoaded() {
+        state = State.LOADED
+    }
+
+    @Deprecated(
+        "Direct access is recommended since 0.2. This access method will be removed in 1.0",
+        ReplaceWith("state = State.LOADING_FAILED", "com.topjohnwu.magisk.base.viewmodel.LoadingViewModel.State"),
+        DeprecationLevel.WARNING
+    )
+    fun setLoadingFailed() {
+        state = State.LOADING_FAILED
+    }
+
+    override fun notifyStateChanged() {
+        notifyPropertyChanged(BR.loading)
+        notifyPropertyChanged(BR.loaded)
+        notifyPropertyChanged(BR.loadingFailed)
+    }
+
+    enum class State {
+        LOADED, LOADING, LOADING_FAILED
+    }
+
+    //region Rx
+    protected fun <T> Observable<T>.applyViewModel(viewModel: LoadingViewModel, allowFinishing: Boolean = true) =
+        doOnSubscribe { viewModel.state = State.LOADING }
+            .doOnError { viewModel.state = State.LOADING_FAILED }
+            .doOnNext { if (allowFinishing) viewModel.state = State.LOADED }
+
+    protected fun <T> Single<T>.applyViewModel(viewModel: LoadingViewModel, allowFinishing: Boolean = true) =
+        doOnSubscribe { viewModel.state = State.LOADING }
+            .doOnError { viewModel.state = State.LOADING_FAILED }
+            .doOnSuccess { if (allowFinishing) viewModel.state = State.LOADED }
+
+    protected fun <T> Maybe<T>.applyViewModel(viewModel: LoadingViewModel, allowFinishing: Boolean = true) =
+        doOnSubscribe { viewModel.state = State.LOADING }
+            .doOnError { viewModel.state = State.LOADING_FAILED }
+            .doOnComplete { if (allowFinishing) viewModel.state = State.LOADED }
+            .doOnSuccess { if (allowFinishing) viewModel.state = State.LOADED }
+
+    protected fun <T> Flowable<T>.applyViewModel(viewModel: LoadingViewModel, allowFinishing: Boolean = true) =
+        doOnSubscribe { viewModel.state = State.LOADING }
+            .doOnError { viewModel.state = State.LOADING_FAILED }
+            .doOnNext { if (allowFinishing) viewModel.state = State.LOADED }
+
+    protected fun Completable.applyViewModel(viewModel: LoadingViewModel, allowFinishing: Boolean = true) =
+        doOnSubscribe { viewModel.state = State.LOADING }
+            .doOnError { viewModel.state = State.LOADING_FAILED }
+            .doOnComplete { if (allowFinishing) viewModel.state = State.LOADED }
+    //endregion
+}

app/src/main/java/com/topjohnwu/magisk/base/viewmodel/ObservableViewModel.kt

@@ -0,0 +1,46 @@
+package com.topjohnwu.magisk.base.viewmodel
+
+import androidx.databinding.Observable
+import androidx.databinding.PropertyChangeRegistry
+import androidx.lifecycle.ViewModel
+
+/**
+ * Copy of [android.databinding.BaseObservable] which extends [ViewModel]
+ */
+abstract class ObservableViewModel : TeanityViewModel(), Observable {
+
+    @Transient
+    private var callbacks: PropertyChangeRegistry? = null
+
+    @Synchronized
+    override fun addOnPropertyChangedCallback(callback: Observable.OnPropertyChangedCallback) {
+        if (callbacks == null) {
+            callbacks = PropertyChangeRegistry()
+        }
+        callbacks?.add(callback)
+    }
+
+    @Synchronized
+    override fun removeOnPropertyChangedCallback(callback: Observable.OnPropertyChangedCallback) {
+        callbacks?.remove(callback)
+    }
+
+    /**
+     * Notifies listeners that all properties of this instance have changed.
+     */
+    @Synchronized
+    fun notifyChange() {
+        callbacks?.notifyCallbacks(this, 0, null)
+    }
+
+    /**
+     * Notifies listeners that a specific property has changed. The getter for the property
+     * that changes should be marked with [android.databinding.Bindable] to generate a field in
+     * `BR` to be used as `fieldId`.
+     *
+     * @param fieldId The generated BR id for the Bindable field.
+     */
+    fun notifyPropertyChanged(fieldId: Int) {
+        callbacks?.notifyCallbacks(this, fieldId, null)
+    }
+}

app/src/main/java/com/topjohnwu/magisk/base/viewmodel/StatefulViewModel.kt

@@ -0,0 +1,15 @@
+package com.topjohnwu.magisk.base.viewmodel
+
+abstract class StatefulViewModel<State : Enum<*>>(
+    val defaultState: State
+) : ObservableViewModel() {
+
+    var state: State = defaultState
+        set(value) {
+            field = value
+            notifyStateChanged()
+        }
+
+    open fun notifyStateChanged() = Unit
+
+}

app/src/main/java/com/topjohnwu/magisk/base/viewmodel/TeanityViewModel.kt

@@ -0,0 +1,33 @@
+package com.topjohnwu.magisk.base.viewmodel
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import com.topjohnwu.magisk.model.events.SimpleViewEvent
+import com.topjohnwu.magisk.model.events.ViewEvent
+import io.reactivex.disposables.CompositeDisposable
+import io.reactivex.disposables.Disposable
+
+abstract class TeanityViewModel : ViewModel() {
+
+    private val disposables = CompositeDisposable()
+    private val _viewEvents = MutableLiveData<ViewEvent>()
+    val viewEvents: LiveData<ViewEvent> get() = _viewEvents
+
+    override fun onCleared() {
+        super.onCleared()
+        disposables.clear()
+    }
+
+    fun <Event : ViewEvent> Event.publish() {
+        _viewEvents.value = this
+    }
+
+    fun Int.publish() {
+        _viewEvents.value = SimpleViewEvent(this)
+    }
+
+    fun Disposable.add() {
+        disposables.add(this)
+    }
+}

app/src/main/java/com/topjohnwu/magisk/data/database/LogDao.kt

@@ -0,0 +1,33 @@
+package com.topjohnwu.magisk.data.database
+
+import com.topjohnwu.magisk.data.database.base.*
+import com.topjohnwu.magisk.model.entity.MagiskLog
+import com.topjohnwu.magisk.model.entity.toLog
+import com.topjohnwu.magisk.model.entity.toMap
+import java.util.concurrent.TimeUnit
+
+class LogDao : BaseDao() {
+
+    override val table = DatabaseDefinition.Table.LOG
+
+    fun deleteOutdated(
+        suTimeout: Long = TimeUnit.DAYS.toMillis(14)
+    ) = query<Delete> {
+        condition {
+            lessThan("time", suTimeout.toString())
+        }
+    }.ignoreElement()
+
+    fun deleteAll() = query<Delete> {}.ignoreElement()
+
+    fun fetchAll() = query<Select> {
+        orderBy("time", Order.DESC)
+    }.flattenAsFlowable { it }
+        .map { it.toLog() }
+        .toList()
+
+    fun put(log: MagiskLog) = query<Insert> {
+        values(log.toMap())
+    }.ignoreElement()
+
+}

app/src/main/java/com/topjohnwu/magisk/data/database/MagiskDB.java

@@ -1,190 +0,0 @@
-package com.topjohnwu.magisk.data.database;
-
-import android.content.ContentValues;
-import android.content.Context;
-import android.content.pm.PackageManager;
-import android.text.TextUtils;
-
-import com.topjohnwu.magisk.Config;
-import com.topjohnwu.magisk.Const;
-import com.topjohnwu.magisk.model.entity.Policy;
-import com.topjohnwu.magisk.model.entity.SuLogEntry;
-import com.topjohnwu.magisk.utils.LocaleManager;
-import com.topjohnwu.magisk.utils.Utils;
-import com.topjohnwu.superuser.Shell;
-
-import java.text.DateFormat;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Date;
-import java.util.List;
-import java.util.Map;
-
-public class MagiskDB {
-
-    private static final String POLICY_TABLE = "policies";
-    private static final String LOG_TABLE = "logs";
-    private static final String SETTINGS_TABLE = "settings";
-    private static final String STRINGS_TABLE = "strings";
-
-    private PackageManager pm;
-
-    public MagiskDB(Context context) {
-        pm = context.getPackageManager();
-    }
-
-    public void deletePolicy(Policy policy) {
-        deletePolicy(policy.uid);
-    }
-
-    private List<String> rawSQL(String fmt, Object... args) {
-        return Shell.su("magisk --sqlite '" + Utils.fmt(fmt, args) + "'").exec().getOut();
-    }
-
-    private List<ContentValues> SQL(String fmt, Object... args) {
-        List<ContentValues> list = new ArrayList<>();
-        for (String raw : rawSQL(fmt, args)) {
-            ContentValues values = new ContentValues();
-            String[] cols = raw.split("\\|");
-            for (String col : cols) {
-                String[] pair = col.split("=", 2);
-                if (pair.length != 2)
-                    continue;
-                values.put(pair[0], pair[1]);
-            }
-            list.add(values);
-        }
-        return list;
-    }
-
-    private String toSQL(ContentValues values) {
-        StringBuilder keys = new StringBuilder(), vals = new StringBuilder();
-        keys.append('(');
-        vals.append("VALUES(");
-        boolean first = true;
-        for (Map.Entry<String, Object> entry : values.valueSet()) {
-            if (!first) {
-                keys.append(',');
-                vals.append(',');
-            } else {
-                first = false;
-            }
-            keys.append(entry.getKey());
-            vals.append('"');
-            vals.append(entry.getValue());
-            vals.append('"');
-        }
-        keys.append(')');
-        vals.append(')');
-        keys.append(vals);
-        return keys.toString();
-    }
-
-    public void clearOutdated() {
-        rawSQL(
-                "DELETE FROM %s WHERE until > 0 AND until < %d;" +
-                        "DELETE FROM %s WHERE time < %d",
-                POLICY_TABLE, System.currentTimeMillis() / 1000,
-                LOG_TABLE, System.currentTimeMillis() - Config.suLogTimeout * 86400000
-        );
-    }
-
-    public void deletePolicy(String pkg) {
-        rawSQL("DELETE FROM %s WHERE package_name=\"%s\"", POLICY_TABLE, pkg);
-    }
-
-    public void deletePolicy(int uid) {
-        rawSQL("DELETE FROM %s WHERE uid=%d", POLICY_TABLE, uid);
-    }
-
-    public Policy getPolicy(int uid) {
-        List<ContentValues> res =
-                SQL("SELECT * FROM %s WHERE uid=%d", POLICY_TABLE, uid);
-        if (!res.isEmpty()) {
-            try {
-                return new Policy(res.get(0), pm);
-            } catch (PackageManager.NameNotFoundException e) {
-                deletePolicy(uid);
-            }
-        }
-        return null;
-    }
-
-    public void updatePolicy(Policy policy) {
-        rawSQL("REPLACE INTO %s %s", POLICY_TABLE, toSQL(policy.getContentValues()));
-    }
-
-    public List<Policy> getPolicyList() {
-        List<Policy> list = new ArrayList<>();
-        for (ContentValues values : SQL("SELECT * FROM %s WHERE uid/100000=%d", POLICY_TABLE, Const.USER_ID)) {
-            try {
-                list.add(new Policy(values, pm));
-            } catch (PackageManager.NameNotFoundException e) {
-                deletePolicy(values.getAsInteger("uid"));
-            }
-        }
-        Collections.sort(list);
-        return list;
-    }
-
-    public List<List<SuLogEntry>> getLogs() {
-        List<List<SuLogEntry>> ret = new ArrayList<>();
-        List<SuLogEntry> list = null;
-        String dateString = null, newString;
-        for (ContentValues values : SQL("SELECT * FROM %s ORDER BY time DESC", LOG_TABLE)) {
-            Date date = new Date(values.getAsLong("time"));
-            newString = DateFormat.getDateInstance(DateFormat.MEDIUM, LocaleManager.locale).format(date);
-            if (!TextUtils.equals(dateString, newString)) {
-                dateString = newString;
-                list = new ArrayList<>();
-                ret.add(list);
-            }
-            list.add(new SuLogEntry(values));
-        }
-        return ret;
-    }
-
-    public void addLog(SuLogEntry log) {
-        rawSQL("INSERT INTO %s %s", LOG_TABLE, toSQL(log.getContentValues()));
-    }
-
-    public void clearLogs() {
-        rawSQL("DELETE FROM %s", LOG_TABLE);
-    }
-
-    public void rmSettings(String key) {
-        rawSQL("DELETE FROM %s WHERE key=\"%s\"", SETTINGS_TABLE, key);
-    }
-
-    public void setSettings(String key, int value) {
-        ContentValues data = new ContentValues();
-        data.put("key", key);
-        data.put("value", value);
-        rawSQL("REPLACE INTO %s %s", SETTINGS_TABLE, toSQL(data));
-    }
-
-    public int getSettings(String key, int defaultValue) {
-        List<ContentValues> res = SQL("SELECT value FROM %s WHERE key=\"%s\"", SETTINGS_TABLE, key);
-        if (res.isEmpty())
-            return defaultValue;
-        return res.get(0).getAsInteger("value");
-    }
-
-    public void setStrings(String key, String value) {
-        if (value == null) {
-            rawSQL("DELETE FROM %s WHERE key=\"%s\"", STRINGS_TABLE, key);
-            return;
-        }
-        ContentValues data = new ContentValues();
-        data.put("key", key);
-        data.put("value", value);
-        rawSQL("REPLACE INTO %s %s", STRINGS_TABLE, toSQL(data));
-    }
-
-    public String getStrings(String key, String defaultValue) {
-        List<ContentValues> res = SQL("SELECT value FROM %s WHERE key=\"%s\"", STRINGS_TABLE, key);
-        if (res.isEmpty())
-            return defaultValue;
-        return res.get(0).getAsString("value");
-    }
-}

app/src/main/java/com/topjohnwu/magisk/data/database/PolicyDao.kt

@@ -0,0 +1,75 @@
+package com.topjohnwu.magisk.data.database
+
+import android.content.Context
+import android.content.pm.PackageManager
+import com.topjohnwu.magisk.Const
+import com.topjohnwu.magisk.data.database.base.*
+import com.topjohnwu.magisk.extensions.now
+import com.topjohnwu.magisk.model.entity.MagiskPolicy
+import com.topjohnwu.magisk.model.entity.toMap
+import com.topjohnwu.magisk.model.entity.toPolicy
+import timber.log.Timber
+import java.util.concurrent.TimeUnit
+
+
+class PolicyDao(
+    private val context: Context
+) : BaseDao() {
+
+    override val table: String = DatabaseDefinition.Table.POLICY
+
+    fun deleteOutdated(
+        nowSeconds: Long = TimeUnit.MILLISECONDS.toSeconds(now)
+    ) = query<Delete> {
+        condition {
+            greaterThan("until", "0")
+            and {
+                lessThan("until", nowSeconds.toString())
+            }
+            or {
+                lessThan("until", "0")
+            }
+        }
+    }.ignoreElement()
+
+    fun delete(packageName: String) = query<Delete> {
+        condition {
+            equals("package_name", packageName)
+        }
+    }.ignoreElement()
+
+    fun delete(uid: Int) = query<Delete> {
+        condition {
+            equals("uid", uid)
+        }
+    }.ignoreElement()
+
+    fun fetch(uid: Int) = query<Select> {
+        condition {
+            equals("uid", uid)
+        }
+    }.map { it.first().toPolicySafe() }
+
+    fun update(policy: MagiskPolicy) = query<Replace> {
+        values(policy.toMap())
+    }.ignoreElement()
+
+    fun fetchAll() = query<Select> {
+        condition {
+            equals("uid/100000", Const.USER_ID)
+        }
+    }.map { it.mapNotNull { it.toPolicySafe() } }
+
+
+    private fun Map<String, String>.toPolicySafe(): MagiskPolicy? {
+        return runCatching { toPolicy(context.packageManager) }.getOrElse {
+            Timber.e(it)
+            if (it is PackageManager.NameNotFoundException) {
+                val uid = getOrElse("uid") { null } ?: return null
+                delete(uid).subscribe()
+            }
+            null
+        }
+    }
+
+}

app/src/main/java/com/topjohnwu/magisk/data/database/RepoDao.kt

@@ -0,0 +1,72 @@
+package com.topjohnwu.magisk.data.database
+
+import androidx.room.*
+import com.topjohnwu.magisk.Config
+import com.topjohnwu.magisk.model.entity.module.Repo
+
+@Dao
+abstract class RepoDao {
+
+    val repoIDList get() = getRepoID().map { it.id }
+
+    val repos: List<Repo> get() = when (Config.repoOrder) {
+            Config.Value.ORDER_NAME -> getReposNameOrder()
+            else -> getReposDateOrder()
+        }
+
+    var etagKey: String
+        set(etag) = addEtagRaw(RepoEtag(0, etag))
+        get() = etagRaw()?.key.orEmpty()
+
+    fun clear() {
+        clearRepos()
+        clearEtag()
+    }
+
+    @Query("SELECT * FROM repos ORDER BY last_update DESC")
+    protected abstract fun getReposDateOrder(): List<Repo>
+
+    @Query("SELECT * FROM repos ORDER BY name COLLATE NOCASE")
+    protected abstract fun getReposNameOrder(): List<Repo>
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    abstract fun addRepo(repo: Repo)
+
+    @Query("SELECT * FROM repos WHERE id = :id")
+    abstract fun getRepo(id: String): Repo?
+
+    @Query("SELECT id FROM repos")
+    protected abstract fun getRepoID(): List<RepoID>
+
+    @Delete
+    abstract fun removeRepo(repo: Repo)
+
+    @Query("DELETE FROM repos WHERE id = :id")
+    abstract fun removeRepo(id: String)
+
+    @Query("DELETE FROM repos WHERE id IN (:idList)")
+    abstract fun removeRepos(idList: Collection<String>)
+
+    @Query("SELECT * FROM etag")
+    protected abstract fun etagRaw(): RepoEtag?
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    protected abstract fun addEtagRaw(etag: RepoEtag)
+
+    @Query("DELETE FROM repos")
+    protected abstract fun clearRepos()
+
+    @Query("DELETE FROM etag")
+    protected abstract fun clearEtag()
+}
+
+data class RepoID(
+    @PrimaryKey val id: String
+)
+
+@Entity(tableName = "etag")
+data class RepoEtag(
+    @PrimaryKey val id: Int,
+    val key: String
+)
+

app/src/main/java/com/topjohnwu/magisk/data/database/RepoDatabase.kt

@@ -0,0 +1,11 @@
+package com.topjohnwu.magisk.data.database
+
+import androidx.room.Database
+import androidx.room.RoomDatabase
+import com.topjohnwu.magisk.model.entity.module.Repo
+
+@Database(version = 6, entities = [Repo::class, RepoEtag::class])
+abstract class RepoDatabase : RoomDatabase() {
+
+    abstract fun repoDao() : RepoDao
+}