Fix signatures are being deprecated

This commit should fix the problem where VPN connection is viewed as metered connections on Android P DP1. However as I only have an emulator to test, I can't tell if it really works but it should.

An interesting observation is that the developer can call setUnderlyingNetworks(arrayOfNulls(1)) to make the VPN connection always unmetered. This is more of a quick hack instead of a real fix. Source: https://android.googlesource.com/platform/frameworks/base/+/adbf1d0/services/core/java/com/android/server/connectivity/Vpn.java#312

One may ask whether it's possible to fix this issue for Android 8.1. The short answer is not that I know of.
After some intensive source code reading, I found out that this is the commit that "breaks" whether VPN is metered for Android 8.1: https://android.googlesource.com/platform/frameworks/base/+/43d2a1700b6eb1d804924c6a1e5e0161a13a5348%5E%21/
The key is that isActiveNetworkMetered() used to return getActiveNetworkInfo().isMetered() and now it uses the more up-to-date API getActiveNetwork(). However, getActiveNetworkInfo() ignores VPN connections while getActiveNetwork() prefers VPN connection. And since NetworkCapabilities for VPN Network is always metered by default, this ultimately causes the bug. One might be able to get around this bug by somehow calling NetworkAgent.sendNetworkCapabilities in the correct context.

Fix #1666.

.github/faq.md

@@ -29,8 +29,7 @@ The exclamation mark in the Wi-Fi/cellular icon appears because the system fails
 3. Some ROM like [Flyme](https://github.com/shadowsocks/shadowsocks-android/issues/1589) has **very** broken direct boot support;
 4. If you have Xposed framework and/or battery saver apps, it's likely that this app wouldn't work well with these either.
 
-* Fixes for MIUI: [#772](https://github.com/shadowsocks/shadowsocks-android/issues/772)
-* Fixes for EMUI: [#888](https://github.com/shadowsocks/shadowsocks-android/issues/888)
+* Fixes for MIUI: [#772](https://github.com/shadowsocks/shadowsocks-android/issues/772) [#888](https://github.com/shadowsocks/shadowsocks-android/issues/888)
 * Fixes for Huawei: [#1091 (comment)](https://github.com/shadowsocks/shadowsocks-android/issues/1091#issuecomment-276949836)
 * Related to Xposed: [#1414](https://github.com/shadowsocks/shadowsocks-android/issues/1414)
 * Samsung and/or Brevent: [#1410](https://github.com/shadowsocks/shadowsocks-android/issues/1410)

.github/faq.ru.md

@@ -12,6 +12,11 @@
 
 Использйте интеграцию с [Tasker](http://tasker.dinglisch.net/).
 
+### Как добавить QR код из локальной галереи?
+
+Отсканируйте его при помощи стороннего сканера, например [QuickMark Barcode Scanner](https://play.google.com/store/apps/details?id=tw.com.quickmark) и нажмите на `ss` ссылку.
+
+
 ### Почему режим NAT более не поддерживается?
 
 1. Требуются ROOT права;
@@ -29,8 +34,7 @@
 3. Некоторые ROM, такие как [Flyme](https://github.com/shadowsocks/shadowsocks-android/issues/1589) имеют **слишком** испорченную поддержку "непосредственной загрузки";
 4. Если вы используете фреймворк Xposed и/или приложения для энергосбережения, вероятно наше приложение не будет нормально работать с ними.
 
-* Исправления для MIUI: [#772](https://github.com/shadowsocks/shadowsocks-android/issues/772)
-* Исправления для EMUI: [#888](https://github.com/shadowsocks/shadowsocks-android/issues/888)
+* Иправления для MIUI: [#772](https://github.com/shadowsocks/shadowsocks-android/issues/772) [#888](https://github.com/shadowsocks/shadowsocks-android/issues/888)
 * Иправления для Huawei: [#1091 (комментарий)](https://github.com/shadowsocks/shadowsocks-android/issues/1091#issuecomment-276949836)
 * Вызванные из-за Xposed: [#1414](https://github.com/shadowsocks/shadowsocks-android/issues/1414)
 * Samsung и/или Brevent: [#1410](https://github.com/shadowsocks/shadowsocks-android/issues/1410)

build.gradle

@@ -6,9 +6,10 @@ buildscript {
     ext {
         kotlinVersion = '1.2.30'
         minSdkVersion = 21
-        sdkVersion = 27
-        buildToolsVersion = '27.0.3'
-        supportLibraryVersion = '27.1.0'
+        sdkVersion = 'P'
+        compileSdkVersion = 'android-P'
+        buildToolsVersion = '28-rc1'
+        supportLibraryVersion = '28.0.0-alpha1'
         takisoftFixVersion = '27.1.0.0'
         playServicesVersion = '11.8.0'
         junitVersion = '4.12'
@@ -22,7 +23,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.2.0-alpha05'
         classpath 'com.github.ben-manes:gradle-versions-plugin:0.17.0'
         classpath 'com.google.gms:google-services:3.2.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"

core/build.gradle

@@ -4,7 +4,7 @@ apply plugin: 'com.android.library'
 
 android {
     buildToolsVersion rootProject.buildToolsVersion
-    compileSdkVersion rootProject.sdkVersion
+    compileSdkVersion rootProject.compileSdkVersion
 
     defaultConfig {
         minSdkVersion rootProject.minSdkVersion

gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip

mobile/build.gradle

@@ -16,13 +16,13 @@ def getCurrentFlavor() {
 
 android {
     buildToolsVersion rootProject.buildToolsVersion
-    compileSdkVersion rootProject.sdkVersion
+    compileSdkVersion rootProject.compileSdkVersion
     defaultConfig {
         applicationId "com.github.shadowsocks"
         minSdkVersion rootProject.minSdkVersion
         targetSdkVersion rootProject.sdkVersion
-        versionCode 4050200
-        versionName "4.5.2"
+        versionCode 4050100
+        versionName "4.5.1"
         testApplicationId "com.github.shadowsocks.test"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         resConfigs "fa", "fr", "ja", "ko", "ru", "zh-rCN", "zh-rTW"

mobile/src/main/java/android/support/design/animation/AnimationConsts.kt

@@ -0,0 +1,27 @@
+/*******************************************************************************
+ *                                                                             *
+ *  Copyright (C) 2017 by Max Lv <max.c.lv@gmail.com>                          *
+ *  Copyright (C) 2017 by Mygod Studio <contact-shadowsocks-android@mygod.be>  *
+ *                                                                             *
+ *  This program is free software: you can redistribute it and/or modify       *
+ *  it under the terms of the GNU General Public License as published by       *
+ *  the Free Software Foundation, either version 3 of the License, or          *
+ *  (at your option) any later version.                                        *
+ *                                                                             *
+ *  This program is distributed in the hope that it will be useful,            *
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of             *
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
+ *  GNU General Public License for more details.                               *
+ *                                                                             *
+ *  You should have received a copy of the GNU General Public License          *
+ *  along with this program. If not, see <http://www.gnu.org/licenses/>.       *
+ *                                                                             *
+ *******************************************************************************/
+
+package android.support.design.animation
+
+import android.animation.TimeInterpolator
+
+object AnimationConsts {
+    val FAST_OUT_SLOW_IN_INTERPOLATOR: TimeInterpolator get() = AnimationUtils.FAST_OUT_SLOW_IN_INTERPOLATOR
+}

mobile/src/main/java/android/support/design/widget/SnackbarAnimation.kt

@@ -1,8 +0,0 @@
-package android.support.design.widget
-
-import android.view.animation.Interpolator
-
-object SnackbarAnimation {
-    val FAST_OUT_SLOW_IN_INTERPOLATOR: Interpolator get() = AnimationUtils.FAST_OUT_SLOW_IN_INTERPOLATOR
-    const val ANIMATION_DURATION = BaseTransientBottomBar.ANIMATION_DURATION.toLong()
-}

mobile/src/main/java/android/support/design/widget/SnackbarConsts.kt

@@ -0,0 +1,25 @@
+/*******************************************************************************
+ *                                                                             *
+ *  Copyright (C) 2017 by Max Lv <max.c.lv@gmail.com>                          *
+ *  Copyright (C) 2017 by Mygod Studio <contact-shadowsocks-android@mygod.be>  *
+ *                                                                             *
+ *  This program is free software: you can redistribute it and/or modify       *
+ *  it under the terms of the GNU General Public License as published by       *
+ *  the Free Software Foundation, either version 3 of the License, or          *
+ *  (at your option) any later version.                                        *
+ *                                                                             *
+ *  This program is distributed in the hope that it will be useful,            *
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of             *
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
+ *  GNU General Public License for more details.                               *
+ *                                                                             *
+ *  You should have received a copy of the GNU General Public License          *
+ *  along with this program. If not, see <http://www.gnu.org/licenses/>.       *
+ *                                                                             *
+ *******************************************************************************/
+
+package android.support.design.widget
+
+object SnackbarConsts {
+    const val ANIMATION_DURATION = BaseTransientBottomBar.ANIMATION_DURATION.toLong()
+}

mobile/src/main/java/com/github/shadowsocks/App.kt

@@ -34,6 +34,7 @@ import android.os.Build
 import android.os.Handler
 import android.os.Looper
 import android.support.annotation.RequiresApi
+import android.support.v4.os.BuildCompat
 import android.support.v4.os.UserManagerCompat
 import android.support.v7.app.AppCompatDelegate
 import android.util.Log
@@ -73,8 +74,8 @@ class App : Application() {
     private val tracker: Tracker by lazy { GoogleAnalytics.getInstance(deviceContext).newTracker(R.xml.tracker) }
     val info: PackageInfo by lazy { getPackageInfo(packageName) }
 
-    fun getPackageInfo(packageName: String) =
-            packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNATURES)!!
+    fun getPackageInfo(packageName: String) = packageManager.getPackageInfo(packageName, if (BuildCompat.isAtLeastP())
+        PackageManager.GET_SIGNING_CERTIFICATES else @Suppress("DEPRECATION") PackageManager.GET_SIGNATURES)!!
 
     fun startService() {
         val intent = Intent(this, BaseService.serviceClass.java)

mobile/src/main/java/com/github/shadowsocks/AppManager.kt

@@ -27,7 +27,6 @@ import android.annotation.SuppressLint
 import android.content.BroadcastReceiver
 import android.content.ClipData
 import android.content.ClipboardManager
-import android.content.Context
 import android.content.pm.ApplicationInfo
 import android.content.pm.PackageInfo
 import android.content.pm.PackageManager
@@ -49,10 +48,7 @@ import com.futuremind.recyclerviewfastscroll.SectionTitleProvider
 import com.github.shadowsocks.App.Companion.app
 import com.github.shadowsocks.database.ProfileManager
 import com.github.shadowsocks.preference.DataStore
-import com.github.shadowsocks.utils.DirectBoot
-import com.github.shadowsocks.utils.Key
-import com.github.shadowsocks.utils.resolveResourceId
-import com.github.shadowsocks.utils.thread
+import com.github.shadowsocks.utils.*
 import java.util.concurrent.atomic.AtomicBoolean
 
 class AppManager : AppCompatActivity(), Toolbar.OnMenuItemClickListener {
@@ -142,7 +138,7 @@ class AppManager : AppCompatActivity(), Toolbar.OnMenuItemClickListener {
     private lateinit var loadingView: View
     private val appsLoading = AtomicBoolean()
     private val handler = Handler()
-    private val clipboard by lazy { getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager }
+    private val clipboard by lazy { systemService<ClipboardManager>() }
 
     private fun initProxiedApps(str: String = DataStore.individual) {
         proxiedApps = str.split('\n').toHashSet()

mobile/src/main/java/com/github/shadowsocks/ProfileConfigFragment.kt

@@ -56,7 +56,7 @@ class ProfileConfigFragment : PreferenceFragmentCompatDividers(), Toolbar.OnMenu
         private const val REQUEST_CODE_PLUGIN_CONFIGURE = 1
     }
 
-    private var profileId = -1
+    private lateinit var profile: Profile
     private lateinit var isProxyApps: SwitchPreference
     private lateinit var plugin: IconListPreference
     private lateinit var pluginConfigure: EditTextPreference
@@ -66,7 +66,13 @@ class ProfileConfigFragment : PreferenceFragmentCompatDividers(), Toolbar.OnMenu
     override fun onCreatePreferencesFix(savedInstanceState: Bundle?, rootKey: String?) {
         preferenceManager.preferenceDataStore = DataStore.privateStore
         val activity = requireActivity()
-        profileId = activity.intent.getIntExtra(Action.EXTRA_PROFILE_ID, -1)
+        val profile = ProfileManager.getProfile(activity.intent.getIntExtra(Action.EXTRA_PROFILE_ID, -1))
+        if (profile == null) {
+            activity.finish()
+            return
+        }
+        this.profile = profile
+        profile.serialize()
         addPreferencesFromResource(R.xml.pref_profile)
         if (Build.VERSION.SDK_INT >= 25 && activity.getSystemService(UserManager::class.java).isDemoUser) {
             findPreference(Key.host).summary = "shadowsocks.example.org"
@@ -124,12 +130,10 @@ class ProfileConfigFragment : PreferenceFragmentCompatDividers(), Toolbar.OnMenu
     }
 
     fun saveAndExit() {
-        val profile = ProfileManager.getProfile(profileId) ?: Profile()
-        profile.id = profileId
         profile.deserialize()
         ProfileManager.updateProfile(profile)
-        ProfilesFragment.instance?.profilesAdapter?.deepRefreshId(profileId)
-        if (DataStore.profileId == profileId && DataStore.directBootAware) DirectBoot.update()
+        ProfilesFragment.instance?.profilesAdapter?.deepRefreshId(profile.id)
+        if (DataStore.profileId == profile.id && DataStore.directBootAware) DirectBoot.update()
         requireActivity().finish()
     }
 
@@ -183,7 +187,7 @@ class ProfileConfigFragment : PreferenceFragmentCompatDividers(), Toolbar.OnMenu
             AlertDialog.Builder(activity)
                     .setTitle(R.string.delete_confirm_prompt)
                     .setPositiveButton(R.string.yes, { _, _ ->
-                        ProfileManager.delProfile(profileId)
+                        ProfileManager.delProfile(profile.id)
                         activity.finish()
                     })
                     .setNegativeButton(R.string.no, null)

mobile/src/main/java/com/github/shadowsocks/ProfilesFragment.kt

@@ -45,6 +45,7 @@ import com.github.shadowsocks.database.ProfileManager
 import com.github.shadowsocks.plugin.PluginConfiguration
 import com.github.shadowsocks.preference.DataStore
 import com.github.shadowsocks.utils.Action
+import com.github.shadowsocks.utils.systemService
 import com.github.shadowsocks.widget.UndoSnackbarManager
 import com.google.android.gms.ads.AdRequest
 import com.google.android.gms.ads.AdSize
@@ -123,7 +124,7 @@ class ProfilesFragment : ToolbarFragment(), Toolbar.OnMenuItemClickListener {
         private var adView: AdView? = null
 
         init {
-            edit.setOnClickListener { startConfig(item) }
+            edit.setOnClickListener { startConfig(item.id) }
             TooltipCompat.setTooltipText(edit, edit.contentDescription)
             itemView.setOnClickListener(this)
             val share = itemView.findViewById<View>(R.id.share)
@@ -305,12 +306,10 @@ class ProfilesFragment : ToolbarFragment(), Toolbar.OnMenuItemClickListener {
     private var txTotal: Long = 0L
     private var rxTotal: Long = 0L
 
-    private val clipboard by lazy { requireContext().getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager }
+    private val clipboard by lazy { requireContext().systemService<ClipboardManager>() }
 
-    private fun startConfig(profile: Profile) {
-        profile.serialize()
-        startActivity(Intent(context, ProfileConfigActivity::class.java).putExtra(Action.EXTRA_PROFILE_ID, profile.id))
-    }
+    private fun startConfig(id: Int) = startActivity(Intent(context, ProfileConfigActivity::class.java)
+            .putExtra(Action.EXTRA_PROFILE_ID, id))
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? =
             inflater.inflate(R.layout.layout_list, container, false)
@@ -368,20 +367,20 @@ class ProfilesFragment : ToolbarFragment(), Toolbar.OnMenuItemClickListener {
             }
             R.id.action_import -> {
                 try {
-                    val profiles = Profile.findAll(clipboard.primaryClip!!.getItemAt(0).text).toList()
+                    val profiles = Profile.findAll(clipboard.primaryClip.getItemAt(0).text).toList()
                     if (profiles.isNotEmpty()) {
                         profiles.forEach { ProfileManager.createProfile(it) }
                         Snackbar.make(requireActivity().findViewById(R.id.snackbar), R.string.action_import_msg,
                                 Snackbar.LENGTH_LONG).show()
                         return true
                     }
-                } catch (_: Exception) { }
+                } catch (_: IndexOutOfBoundsException) { }
                 Snackbar.make(requireActivity().findViewById(R.id.snackbar), R.string.action_import_err,
                         Snackbar.LENGTH_LONG).show()
                 true
             }
             R.id.action_manual_settings -> {
-                startConfig(ProfileManager.createProfile())
+                startConfig(ProfileManager.createProfile().id)
                 true
             }
             R.id.action_export -> {

mobile/src/main/java/com/github/shadowsocks/ScannerActivity.kt

@@ -21,7 +21,6 @@
 package com.github.shadowsocks
 
 import android.app.Activity
-import android.content.Context
 import android.content.Intent
 import android.content.pm.ShortcutManager
 import android.graphics.BitmapFactory
@@ -40,6 +39,7 @@ import com.github.shadowsocks.App.Companion.app
 import com.github.shadowsocks.database.Profile
 import com.github.shadowsocks.database.ProfileManager
 import com.github.shadowsocks.utils.resolveResourceId
+import com.github.shadowsocks.utils.systemService
 import com.google.android.gms.samples.vision.barcodereader.BarcodeCapture
 import com.google.android.gms.samples.vision.barcodereader.BarcodeGraphic
 import com.google.android.gms.vision.Frame
@@ -65,7 +65,7 @@ class ScannerActivity : AppCompatActivity(), Toolbar.OnMenuItemClickListener, Ba
         super.onCreate(savedInstanceState)
         if (Build.VERSION.SDK_INT >= 25) getSystemService(ShortcutManager::class.java).reportShortcutUsed("scan")
         if (try {
-                    (getSystemService(Context.CAMERA_SERVICE) as CameraManager).cameraIdList.isEmpty()
+                    systemService<CameraManager>().cameraIdList.isEmpty()
                 } catch (_: CameraAccessException) {
                     true
                 }) {

mobile/src/main/java/com/github/shadowsocks/VpnRequestActivity.kt

@@ -22,7 +22,6 @@ package com.github.shadowsocks
 
 import android.app.KeyguardManager
 import android.content.BroadcastReceiver
-import android.content.Context
 import android.content.Intent
 import android.content.IntentFilter
 import android.net.VpnService
@@ -33,6 +32,7 @@ import com.github.shadowsocks.App.Companion.app
 import com.github.shadowsocks.aidl.IShadowsocksService
 import com.github.shadowsocks.bg.BaseService
 import com.github.shadowsocks.utils.broadcastReceiver
+import com.github.shadowsocks.utils.systemService
 
 class VpnRequestActivity : AppCompatActivity(), ShadowsocksConnection.Interface {
     companion object {
@@ -48,8 +48,7 @@ class VpnRequestActivity : AppCompatActivity(), ShadowsocksConnection.Interface
             finish()
             return
         }
-        val km = getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager
-        if (km.inKeyguardRestrictedInputMode()) {
+        if (systemService<KeyguardManager>().inKeyguardRestrictedInputMode()) {
             receiver = broadcastReceiver { _, _ -> connection.connect() }
             registerReceiver(receiver, IntentFilter(Intent.ACTION_USER_PRESENT))
         } else connection.connect()

mobile/src/main/java/com/github/shadowsocks/acl/CustomRulesFragment.kt

@@ -22,7 +22,6 @@ package com.github.shadowsocks.acl
 
 import android.content.ClipData
 import android.content.ClipboardManager
-import android.content.Context
 import android.os.Build
 import android.os.Bundle
 import android.support.design.widget.Snackbar
@@ -48,6 +47,7 @@ import com.github.shadowsocks.bg.BaseService
 import com.github.shadowsocks.utils.Subnet
 import com.github.shadowsocks.utils.asIterable
 import com.github.shadowsocks.utils.resolveResourceId
+import com.github.shadowsocks.utils.systemService
 import com.github.shadowsocks.widget.UndoSnackbarManager
 import java.net.IDN
 import java.net.MalformedURLException
@@ -360,7 +360,7 @@ class CustomRulesFragment : ToolbarFragment(), Toolbar.OnMenuItemClickListener,
     private lateinit var list: RecyclerView
     private var mode: ActionMode? = null
     private lateinit var undoManager: UndoSnackbarManager<Any>
-    private val clipboard by lazy { requireContext().getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager }
+    private val clipboard by lazy { requireContext().systemService<ClipboardManager>() }
 
     private fun onSelectedItemsUpdated() {
         if (selectedItems.isEmpty()) mode?.finish() else if (mode == null) mode = toolbar.startActionMode(this)
@@ -438,7 +438,7 @@ class CustomRulesFragment : ToolbarFragment(), Toolbar.OnMenuItemClickListener,
         }
         R.id.action_import -> {
             try {
-                check(adapter.addToProxy(clipboard.primaryClip!!.getItemAt(0).text.toString()) != null)
+                adapter.addToProxy(clipboard.primaryClip.getItemAt(0).text.toString()) != null
             } catch (exc: Exception) {
                 Snackbar.make(requireActivity().findViewById(R.id.snackbar), R.string.action_import_err,
                         Snackbar.LENGTH_LONG).show()

mobile/src/main/java/com/github/shadowsocks/bg/BaseService.kt

@@ -354,7 +354,7 @@ object BaseService {
                                 .readTimeout(30, TimeUnit.SECONDS)
                                 .build()
                         val mdg = MessageDigest.getInstance("SHA-1")
-                        mdg.update(app.info.signatures[0].toByteArray())
+                        mdg.update(app.info.signaturesCompat.first().toByteArray())
                         val requestBody = FormBody.Builder()
                                 .add("sig", String(Base64.encode(mdg.digest(), 0)))
                                 .build()

mobile/src/main/java/com/github/shadowsocks/bg/LocalDnsService.kt

@@ -84,6 +84,7 @@ object LocalDnsService {
                     Acl.BYPASS_CHN, Acl.BYPASS_LAN_CHN, Acl.GFWLIST, Acl.CUSTOM_RULES -> config
                             .put("PrimaryDNS", localDns)
                             .put("AlternativeDNS", remoteDns)
+                            .put("IPNetworkFile", "china_ip_list.txt")
                             .put("DomainFile", data.aclFile!!.absolutePath)
                     Acl.CHINALIST -> config
                             .put("PrimaryDNS", localDns)

mobile/src/main/java/com/github/shadowsocks/bg/ServiceNotification.kt

@@ -36,6 +36,7 @@ import com.github.shadowsocks.R
 import com.github.shadowsocks.aidl.IShadowsocksServiceCallback
 import com.github.shadowsocks.utils.Action
 import com.github.shadowsocks.utils.broadcastReceiver
+import com.github.shadowsocks.utils.systemService
 import java.util.*
 
 /**
@@ -46,7 +47,7 @@ import java.util.*
  */
 class ServiceNotification(private val service: BaseService.Interface, profileName: String,
                           channel: String, private val visible: Boolean = false) {
-    private val keyGuard = (service as Context).getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager
+    private val keyGuard = (service as Context).systemService<KeyguardManager>()
     private val nm by lazy {
         (service as Context).getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
     }
@@ -82,7 +83,7 @@ class ServiceNotification(private val service: BaseService.Interface, profileNam
         service as Context
         if (Build.VERSION.SDK_INT < 24) builder.addAction(R.drawable.ic_navigation_close,
                 service.getString(R.string.stop), PendingIntent.getBroadcast(service, 0, Intent(Action.CLOSE), 0))
-        val power = service.getSystemService(Context.POWER_SERVICE) as PowerManager
+        val power = service.systemService<PowerManager>()
         update(if (power.isInteractive) Intent.ACTION_SCREEN_ON else Intent.ACTION_SCREEN_OFF, true)
         val screenFilter = IntentFilter()
         screenFilter.addAction(Intent.ACTION_SCREEN_ON)

mobile/src/main/java/com/github/shadowsocks/bg/TileService.kt

@@ -21,7 +21,6 @@
 package com.github.shadowsocks.bg
 
 import android.app.KeyguardManager
-import android.content.Context
 import android.graphics.drawable.Icon
 import android.service.quicksettings.Tile
 import android.support.annotation.RequiresApi
@@ -31,6 +30,7 @@ import com.github.shadowsocks.ShadowsocksConnection
 import com.github.shadowsocks.aidl.IShadowsocksService
 import com.github.shadowsocks.aidl.IShadowsocksServiceCallback
 import com.github.shadowsocks.preference.DataStore
+import com.github.shadowsocks.utils.systemService
 import android.service.quicksettings.TileService as BaseTileService
 
 @RequiresApi(24)
@@ -38,7 +38,7 @@ class TileService : BaseTileService(), ShadowsocksConnection.Interface {
     private val iconIdle by lazy { Icon.createWithResource(this, R.drawable.ic_service_idle) }
     private val iconBusy by lazy { Icon.createWithResource(this, R.drawable.ic_service_busy) }
     private val iconConnected by lazy { Icon.createWithResource(this, R.drawable.ic_service_active) }
-    private val keyguard by lazy { getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager }
+    private val keyguard by lazy { systemService<KeyguardManager>() }
 
     override val serviceCallback: IShadowsocksServiceCallback.Stub by lazy {
         @RequiresApi(24)

mobile/src/main/java/com/github/shadowsocks/bg/VpnService.kt

@@ -20,14 +20,15 @@
 
 package com.github.shadowsocks.bg
 
+import android.annotation.TargetApi
 import android.app.Service
-import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
 import android.net.*
 import android.os.Build
 import android.os.IBinder
 import android.os.ParcelFileDescriptor
+import android.support.v4.os.BuildCompat
 import android.util.Log
 import com.github.shadowsocks.App.Companion.app
 import com.github.shadowsocks.JniHelper
@@ -38,6 +39,7 @@ import com.github.shadowsocks.acl.Acl
 import com.github.shadowsocks.preference.DataStore
 import com.github.shadowsocks.utils.Subnet
 import com.github.shadowsocks.utils.parseNumericAddress
+import com.github.shadowsocks.utils.systemService
 import java.io.File
 import java.io.FileDescriptor
 import java.io.IOException
@@ -54,8 +56,7 @@ class VpnService : BaseVpnService(), LocalDnsService.Interface {
         private val getInt: Method = FileDescriptor::class.java.getDeclaredMethod("getInt$")
 
         /**
-         * Unfortunately registerDefaultNetworkCallback is going to return VPN interface since Android P DP1:
-         * https://android.googlesource.com/platform/frameworks/base/+/dda156ab0c5d66ad82bdcf76cda07cbc0a9c8a2e
+         * Unfortunately registerDefaultNetworkCallback is going to return our VPN interface: https://android.googlesource.com/platform/frameworks/base/+/dda156ab0c5d66ad82bdcf76cda07cbc0a9c8a2e
          *
          * This makes doing a requestNetwork with REQUEST necessary so that we don't get ALL possible networks that
          * satisfies default network capabilities but only THE default network. Unfortunately we need to have
@@ -76,22 +77,13 @@ class VpnService : BaseVpnService(), LocalDnsService.Interface {
             var success = false
             try {
                 socket.inputStream.read()
-                val fd = socket.ancillaryFileDescriptors!!.single()!!
-                val fdInt = getInt.invoke(fd) as Int
-                try {
-                    val network = underlyingNetwork
-                    success = if (network != null && Build.VERSION.SDK_INT >= 23) {
-                        network.bindSocket(fd)
-                        true
-                    } else protect(fdInt)
-                } catch (e: Exception) {
-                    Log.e(tag, "Error when protect socket", e)
-                    app.track(e)
-                } finally {
-                    JniHelper.close(fdInt) // Trick to close file decriptor
-                }
+                val fds = socket.ancillaryFileDescriptors
+                if (fds.isEmpty()) return
+                val fd = getInt.invoke(fds.first()) as Int
+                success = protect(fd)
+                JniHelper.close(fd) // Trick to close file decriptor
             } catch (e: Exception) {
-                Log.e(tag, "Error when receiving ancillary fd", e)
+                Log.e(tag, "Error when protect socket", e)
                 app.track(e)
             }
             try {
@@ -115,23 +107,19 @@ class VpnService : BaseVpnService(), LocalDnsService.Interface {
     private var conn: ParcelFileDescriptor? = null
     private var worker: ProtectWorker? = null
     private var tun2socksProcess: GuardedProcess? = null
-    private var underlyingNetwork: Network? = null
-        set(value) {
-            if (Build.VERSION.SDK_INT >= 22) setUnderlyingNetworks(if (value == null) null else arrayOf(value))
-            field = value
-        }
 
-    private val connectivity by lazy { getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager }
+    private val connectivity by lazy { systemService<ConnectivityManager>() }
+    @TargetApi(Build.VERSION_CODES.P)
     private val defaultNetworkCallback = object : ConnectivityManager.NetworkCallback() {
         override fun onAvailable(network: Network) {
-            underlyingNetwork = network
+            setUnderlyingNetworks(arrayOf(network))
         }
         override fun onCapabilitiesChanged(network: Network, networkCapabilities: NetworkCapabilities?) {
             // it's a good idea to refresh capabilities
-            underlyingNetwork = network
+            setUnderlyingNetworks(arrayOf(network))
         }
         override fun onLost(network: Network) {
-            underlyingNetwork = null
+            setUnderlyingNetworks(null)
         }
     }
     private var listeningForDefaultNetwork = false
@@ -144,7 +132,7 @@ class VpnService : BaseVpnService(), LocalDnsService.Interface {
     override fun onRevoke() = stopRunner(true)
 
     override fun killProcesses() {
-        if (listeningForDefaultNetwork) {
+        if (BuildCompat.isAtLeastP() && listeningForDefaultNetwork) {
             connectivity.unregisterNetworkCallback(defaultNetworkCallback)
             listeningForDefaultNetwork = false
         }
@@ -229,9 +217,12 @@ class VpnService : BaseVpnService(), LocalDnsService.Interface {
         this.conn = conn
         val fd = conn.fd
 
-        // we want REQUEST here instead of LISTEN
-        connectivity.requestNetwork(defaultNetworkRequest, defaultNetworkCallback)
-        listeningForDefaultNetwork = true
+        // We only need to update since Android P: https://android.googlesource.com/platform/frameworks/base/+/72f9c42b9e59761a28d6b32c42f65de57c98daed
+        if (BuildCompat.isAtLeastP()) {
+            // we want REQUEST here instead of LISTEN
+            connectivity.requestNetwork(defaultNetworkRequest, defaultNetworkCallback)
+            listeningForDefaultNetwork = true
+        }
 
         val cmd = arrayListOf(File(applicationInfo.nativeLibraryDir, Executable.TUN2SOCKS).absolutePath,
                 "--netif-ipaddr", PRIVATE_VLAN.format(Locale.ENGLISH, "2"),

mobile/src/main/java/com/github/shadowsocks/database/LockUtils.kt

@@ -1,61 +0,0 @@
-/*******************************************************************************
- *                                                                             *
- *  Copyright (C) 2017 by Max Lv <max.c.lv@gmail.com>                          *
- *  Copyright (C) 2017 by Mygod Studio <contact-shadowsocks-android@mygod.be>  *
- *                                                                             *
- *  This program is free software: you can redistribute it and/or modify       *
- *  it under the terms of the GNU General Public License as published by       *
- *  the Free Software Foundation, either version 3 of the License, or          *
- *  (at your option) any later version.                                        *
- *                                                                             *
- *  This program is distributed in the hope that it will be useful,            *
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of             *
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
- *  GNU General Public License for more details.                               *
- *                                                                             *
- *  You should have received a copy of the GNU General Public License          *
- *  along with this program. If not, see <http://www.gnu.org/licenses/>.       *
- *                                                                             *
- *******************************************************************************/
-
-package com.github.shadowsocks.database
-
-import android.database.sqlite.SQLiteDatabaseLockedException
-import com.j256.ormlite.dao.Dao
-import com.j256.ormlite.support.ConnectionSource
-import com.j256.ormlite.table.TableUtils
-import java.sql.SQLException
-
-private val Throwable.ultimateCause: Throwable get() {
-    var result = this
-    while (true) {
-        val cause = result.cause ?: return result
-        result = cause
-    }
-}
-
-@Throws(SQLException::class)
-fun <T> safeWrapper(func: () -> T): T {
-    while (true) {
-        try {
-            return func()
-        } catch (e: SQLException) {
-            if (e.ultimateCause !is SQLiteDatabaseLockedException) throw e
-        }
-    }
-}
-
-@Throws(SQLException::class)
-inline fun <reified T> ConnectionSource.createTableSafe() = safeWrapper { TableUtils.createTable(this, T::class.java) }
-@Throws(SQLException::class)
-fun <T, ID> Dao<T, ID>.queryAllSafe(): MutableList<T> = safeWrapper { queryForAll() }
-@Throws(SQLException::class)
-fun <T, ID> Dao<T, ID>.queryByIdSafe(id: ID?): T? = safeWrapper { queryForId(id) }
-@Throws(SQLException::class)
-fun <T, ID> Dao<T, ID>.updateSafe(data: T?): Int = safeWrapper { update(data) }
-@Throws(SQLException::class)
-fun <T, ID> Dao<T, ID>.replaceSafe(data: T?): Dao.CreateOrUpdateStatus? = safeWrapper { createOrUpdate(data) }
-@Throws(SQLException::class)
-fun <T, ID> Dao<T, ID>.deleteByIdSafe(id: ID?) = safeWrapper { deleteById(id) }
-@Throws(SQLException::class)
-fun <T, ID> Dao<T, ID>.executeSafe(statement: String?) = safeWrapper { executeRawNoArgs(statement) }

mobile/src/main/java/com/github/shadowsocks/database/PrivateDatabase.kt

@@ -37,18 +37,18 @@ object PrivateDatabase : OrmLiteSqliteOpenHelper(app, Key.DB_PROFILE, null, 25)
     @Suppress("UNCHECKED_CAST")
     val kvPairDao: Dao<KeyValuePair, String?> by lazy { getDao(KeyValuePair::class.java) as Dao<KeyValuePair, String?> }
 
-    override fun onCreate(database: SQLiteDatabase?, connectionSource: ConnectionSource) {
-        connectionSource.createTableSafe<Profile>()
-        connectionSource.createTableSafe<KeyValuePair>()
+    override fun onCreate(database: SQLiteDatabase?, connectionSource: ConnectionSource?) {
+        TableUtils.createTable(connectionSource, Profile::class.java)
+        TableUtils.createTable(connectionSource, KeyValuePair::class.java)
     }
 
-    private fun recreate(database: SQLiteDatabase?, connectionSource: ConnectionSource) {
+    private fun recreate(database: SQLiteDatabase?, connectionSource: ConnectionSource?) {
         TableUtils.dropTable<Profile, Int>(connectionSource, Profile::class.java, true)
         TableUtils.dropTable<KeyValuePair, String?>(connectionSource, KeyValuePair::class.java, true)
         onCreate(database, connectionSource)
     }
 
-    override fun onUpgrade(database: SQLiteDatabase?, connectionSource: ConnectionSource,
+    override fun onUpgrade(database: SQLiteDatabase?, connectionSource: ConnectionSource?,
                            oldVersion: Int, newVersion: Int) {
         if (oldVersion < 7) {
             recreate(database, connectionSource)
@@ -57,38 +57,38 @@ object PrivateDatabase : OrmLiteSqliteOpenHelper(app, Key.DB_PROFILE, null, 25)
 
         try {
             if (oldVersion < 8) {
-                profileDao.executeSafe("ALTER TABLE `profile` ADD COLUMN udpdns SMALLINT;")
+                profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN udpdns SMALLINT;")
             }
             if (oldVersion < 9) {
-                profileDao.executeSafe("ALTER TABLE `profile` ADD COLUMN route VARCHAR DEFAULT 'all';")
+                profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN route VARCHAR DEFAULT 'all';")
             } else if (oldVersion < 19) {
-                profileDao.executeSafe("UPDATE `profile` SET route = 'all' WHERE route IS NULL;")
+                profileDao.executeRawNoArgs("UPDATE `profile` SET route = 'all' WHERE route IS NULL;")
             }
             if (oldVersion < 11) {
-                profileDao.executeSafe("ALTER TABLE `profile` ADD COLUMN ipv6 SMALLINT;")
+                profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN ipv6 SMALLINT;")
             }
             if (oldVersion < 12) {
-                profileDao.executeSafe("BEGIN TRANSACTION;")
-                profileDao.executeSafe("ALTER TABLE `profile` RENAME TO `tmp`;")
-                connectionSource.createTableSafe<Profile>()
-                profileDao.executeSafe(
+                profileDao.executeRawNoArgs("BEGIN TRANSACTION;")
+                profileDao.executeRawNoArgs("ALTER TABLE `profile` RENAME TO `tmp`;")
+                TableUtils.createTable(connectionSource, Profile::class.java)
+                profileDao.executeRawNoArgs(
                         "INSERT INTO `profile`(id, name, host, localPort, remotePort, password, method, route," +
                                 " proxyApps, bypass, udpdns, ipv6, individual) " +
                                 "SELECT id, name, host, localPort, remotePort, password, method, route, 1 - global," +
                                 " bypass, udpdns, ipv6, individual FROM `tmp`;")
-                profileDao.executeSafe("DROP TABLE `tmp`;")
-                profileDao.executeSafe("COMMIT;")
+                profileDao.executeRawNoArgs("DROP TABLE `tmp`;")
+                profileDao.executeRawNoArgs("COMMIT;")
             } else if (oldVersion < 13) {
-                profileDao.executeSafe("ALTER TABLE `profile` ADD COLUMN tx LONG;")
-                profileDao.executeSafe("ALTER TABLE `profile` ADD COLUMN rx LONG;")
-                profileDao.executeSafe("ALTER TABLE `profile` ADD COLUMN date VARCHAR;")
+                profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN tx LONG;")
+                profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN rx LONG;")
+                profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN date VARCHAR;")
             }
 
             if (oldVersion < 15) {
-                if (oldVersion >= 12) profileDao.executeSafe("ALTER TABLE `profile` ADD COLUMN userOrder LONG;")
+                if (oldVersion >= 12) profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN userOrder LONG;")
                 var i = 0L
                 val apps by lazy { app.packageManager.getInstalledApplications(0) }
-                for (profile in profileDao.queryAllSafe()) {
+                for (profile in profileDao.queryForAll()) {
                     if (oldVersion < 14) {
                         val uidSet = profile.individual.split('|').filter(TextUtils::isDigitsOnly)
                                 .map(String::toInt).toSet()
@@ -96,28 +96,28 @@ object PrivateDatabase : OrmLiteSqliteOpenHelper(app, Key.DB_PROFILE, null, 25)
                                 .joinToString("\n") { it.packageName }
                     }
                     profile.userOrder = i
-                    profileDao.updateSafe(profile)
+                    profileDao.update(profile)
                     i += 1
                 }
             }
 
             if (oldVersion < 16) {
-                profileDao.executeSafe(
+                profileDao.executeRawNoArgs(
                         "UPDATE `profile` SET route = 'bypass-lan-china' WHERE route = 'bypass-china'")
             }
 
             if (oldVersion < 21) {
-                profileDao.executeSafe("ALTER TABLE `profile` ADD COLUMN remoteDns VARCHAR DEFAULT '8.8.8.8';")
+                profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN remoteDns VARCHAR DEFAULT '8.8.8.8';")
             }
 
             if (oldVersion < 17) {
-                profileDao.executeSafe("ALTER TABLE `profile` ADD COLUMN plugin VARCHAR;")
+                profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN plugin VARCHAR;")
             } else if (oldVersion < 22) {
                 // upgrade kcptun to SIP003 plugin
-                profileDao.executeSafe("BEGIN TRANSACTION;")
-                profileDao.executeSafe("ALTER TABLE `profile` RENAME TO `tmp`;")
-                connectionSource.createTableSafe<Profile>()
-                profileDao.executeSafe(
+                profileDao.executeRawNoArgs("BEGIN TRANSACTION;")
+                profileDao.executeRawNoArgs("ALTER TABLE `profile` RENAME TO `tmp`;")
+                TableUtils.createTable(connectionSource, Profile::class.java)
+                profileDao.executeRawNoArgs(
                         "INSERT INTO `profile`(id, name, host, localPort, remotePort, password, method, route, " +
                                 "remoteDns, proxyApps, bypass, udpdns, ipv6, individual, tx, rx, date, userOrder, " +
                                 "plugin) " +
@@ -125,17 +125,17 @@ object PrivateDatabase : OrmLiteSqliteOpenHelper(app, Key.DB_PROFILE, null, 25)
                                 "CASE WHEN kcp = 1 THEN kcpPort ELSE remotePort END, password, method, route, " +
                                 "remoteDns, proxyApps, bypass, udpdns, ipv6, individual, tx, rx, date, userOrder, " +
                                 "CASE WHEN kcp = 1 THEN 'kcptun ' || kcpcli ELSE NULL END FROM `tmp`;")
-                profileDao.executeSafe("DROP TABLE `tmp`;")
-                profileDao.executeSafe("COMMIT;")
+                profileDao.executeRawNoArgs("DROP TABLE `tmp`;")
+                profileDao.executeRawNoArgs("COMMIT;")
             }
 
             if (oldVersion < 23) {
-                profileDao.executeSafe("BEGIN TRANSACTION;")
-                connectionSource.createTableSafe<KeyValuePair>()
-                profileDao.executeSafe("COMMIT;")
+                profileDao.executeRawNoArgs("BEGIN TRANSACTION;")
+                TableUtils.createTable(connectionSource, KeyValuePair::class.java)
+                profileDao.executeRawNoArgs("COMMIT;")
                 val old = PreferenceManager.getDefaultSharedPreferences(app)
-                PublicDatabase.kvPairDao.replaceSafe(KeyValuePair(Key.id).put(old.getInt(Key.id, 0)))
-                PublicDatabase.kvPairDao.replaceSafe(KeyValuePair(Key.tfo).put(old.getBoolean(Key.tfo, false)))
+                PublicDatabase.kvPairDao.createOrUpdate(KeyValuePair(Key.id).put(old.getInt(Key.id, 0)))
+                PublicDatabase.kvPairDao.createOrUpdate(KeyValuePair(Key.tfo).put(old.getBoolean(Key.tfo, false)))
             }
 
             if (oldVersion < 25) {

mobile/src/main/java/com/github/shadowsocks/database/Profile.kt

@@ -31,7 +31,6 @@ import com.j256.ormlite.field.DataType
 import com.j256.ormlite.field.DatabaseField
 import java.io.Serializable
 import java.net.URI
-import java.net.URISyntaxException
 import java.util.*
 
 class Profile : Serializable {
@@ -44,51 +43,41 @@ class Profile : Serializable {
 
         fun findAll(data: CharSequence?) = pattern.findAll(data ?: "").map {
             val uri = Uri.parse(it.value)
-            try {
-                if (uri.userInfo == null) {
-                    val match = legacyPattern.matchEntire(String(Base64.decode(uri.host, Base64.NO_PADDING)))
-                    if (match != null) {
-                        val profile = Profile()
-                        profile.method = match.groupValues[1].toLowerCase()
-                        profile.password = match.groupValues[2]
-                        profile.host = match.groupValues[3]
-                        profile.remotePort = match.groupValues[4].toInt()
-                        profile.plugin = uri.getQueryParameter(Key.plugin)
-                        profile.name = uri.fragment
-                        profile
-                    } else {
-                        Log.e(TAG, "Unrecognized URI: ${it.value}")
-                        null
-                    }
+            if (uri.userInfo == null) {
+                val match = legacyPattern.matchEntire(String(Base64.decode(uri.host, Base64.NO_PADDING)))
+                if (match != null) {
+                    val profile = Profile()
+                    profile.method = match.groupValues[1].toLowerCase()
+                    profile.password = match.groupValues[2]
+                    profile.host = match.groupValues[3]
+                    profile.remotePort = match.groupValues[4].toInt()
+                    profile.plugin = uri.getQueryParameter(Key.plugin)
+                    profile.name = uri.fragment
+                    profile
                 } else {
-                    val match = userInfoPattern.matchEntire(String(Base64.decode(uri.userInfo,
-                            Base64.NO_PADDING or Base64.NO_WRAP or Base64.URL_SAFE)))
-                    if (match != null) {
-                        val profile = Profile()
-                        profile.method = match.groupValues[1]
-                        profile.password = match.groupValues[2]
-                        // bug in Android: https://code.google.com/p/android/issues/detail?id=192855
-                        try {
-                            val javaURI = URI(it.value)
-                            profile.host = javaURI.host ?: ""
-                            if (profile.host.firstOrNull() == '[' && profile.host.lastOrNull() == ']')
-                                profile.host = profile.host.substring(1, profile.host.length - 1)
-                            profile.remotePort = javaURI.port
-                            profile.plugin = uri.getQueryParameter(Key.plugin)
-                            profile.name = uri.fragment ?: ""
-                            profile
-                        } catch (e: URISyntaxException) {
-                            Log.e(TAG, "Invalid URI: ${it.value}")
-                            null
-                        }
-                    } else {
-                        Log.e(TAG, "Unknown user info: ${it.value}")
-                        null
-                    }
+                    Log.e(TAG, "Unrecognized URI: ${it.value}")
+                    null
+                }
+            } else {
+                val match = userInfoPattern.matchEntire(String(Base64.decode(uri.userInfo,
+                        Base64.NO_PADDING or Base64.NO_WRAP or Base64.URL_SAFE)))
+                if (match != null) {
+                    val profile = Profile()
+                    profile.method = match.groupValues[1]
+                    profile.password = match.groupValues[2]
+                    // bug in Android: https://code.google.com/p/android/issues/detail?id=192855
+                    val javaURI = URI(it.value)
+                    profile.host = javaURI.host
+                    if (profile.host.firstOrNull() == '[' && profile.host.lastOrNull() == ']')
+                        profile.host = profile.host.substring(1, profile.host.length - 1)
+                    profile.remotePort = javaURI.port
+                    profile.plugin = uri.getQueryParameter(Key.plugin)
+                    profile.name = uri.fragment ?: ""
+                    profile
+                } else {
+                    Log.e(TAG, "Unknown user info: ${it.value}")
+                    null
                 }
-            } catch (e: IllegalArgumentException) {
-                Log.e(TAG, "Invalid base64 detected: ${it.value}")
-                null
             }
         }.filterNotNull()
     }

mobile/src/main/java/com/github/shadowsocks/database/ProfileManager.kt

@@ -48,12 +48,10 @@ object ProfileManager {
             profile.individual = oldProfile.individual
             profile.udpdns = oldProfile.udpdns
         }
-        val last = safeWrapper {
-            PrivateDatabase.profileDao.queryRaw(PrivateDatabase.profileDao.queryBuilder()
+        val last = PrivateDatabase.profileDao.queryRaw(PrivateDatabase.profileDao.queryBuilder()
                 .selectRaw("MAX(userOrder)").prepareStatementString()).firstResult
-        }
         if (last != null && last.size == 1 && last[0] != null) profile.userOrder = last[0].toLong() + 1
-        PrivateDatabase.profileDao.replaceSafe(profile)
+        PrivateDatabase.profileDao.createOrUpdate(profile)
         ProfilesFragment.instance?.profilesAdapter?.add(profile)
         return profile
     }
@@ -62,10 +60,10 @@ object ProfileManager {
      * Note: It's caller's responsibility to update DirectBoot profile if necessary.
      */
     @Throws(SQLException::class)
-    fun updateProfile(profile: Profile) = PrivateDatabase.profileDao.updateSafe(profile)
+    fun updateProfile(profile: Profile) = PrivateDatabase.profileDao.update(profile)
 
     fun getProfile(id: Int): Profile? = try {
-        PrivateDatabase.profileDao.queryByIdSafe(id)
+        PrivateDatabase.profileDao.queryForId(id)
     } catch (ex: SQLException) {
         Log.e(TAG, "getProfile", ex)
         app.track(ex)
@@ -74,16 +72,13 @@ object ProfileManager {
 
     @Throws(SQLException::class)
     fun delProfile(id: Int) {
-        PrivateDatabase.profileDao.deleteByIdSafe(id)
+        PrivateDatabase.profileDao.deleteById(id)
         ProfilesFragment.instance?.profilesAdapter?.removeId(id)
         if (id == DataStore.profileId && DataStore.directBootAware) DirectBoot.clean()
     }
 
     fun getFirstProfile(): Profile? = try {
-        safeWrapper {
-            PrivateDatabase.profileDao.query(
-                    PrivateDatabase.profileDao.queryBuilder().limit(1L).prepare()).singleOrNull()
-        }
+        PrivateDatabase.profileDao.query(PrivateDatabase.profileDao.queryBuilder().limit(1L).prepare()).singleOrNull()
     } catch (ex: SQLException) {
         Log.e(TAG, "getFirstProfile", ex)
         app.track(ex)
@@ -91,10 +86,7 @@ object ProfileManager {
     }
 
     fun getAllProfiles(): List<Profile>? = try {
-        safeWrapper {
-            PrivateDatabase.profileDao.query(
-                    PrivateDatabase.profileDao.queryBuilder().orderBy("userOrder", true).prepare())
-        }
+        PrivateDatabase.profileDao.query(PrivateDatabase.profileDao.queryBuilder().orderBy("userOrder", true).prepare())
     } catch (ex: SQLException) {
         Log.e(TAG, "getAllProfiles", ex)
         app.track(ex)

mobile/src/main/java/com/github/shadowsocks/database/PublicDatabase.kt

@@ -34,21 +34,20 @@ object PublicDatabase : OrmLiteSqliteOpenHelper(app.deviceContext, Key.DB_PUBLIC
     @Suppress("UNCHECKED_CAST")
     val kvPairDao: Dao<KeyValuePair, String?> by lazy { getDao(KeyValuePair::class.java) as Dao<KeyValuePair, String?> }
 
-    override fun onCreate(database: SQLiteDatabase?, connectionSource: ConnectionSource) {
-        connectionSource.createTableSafe<KeyValuePair>()
+    override fun onCreate(database: SQLiteDatabase?, connectionSource: ConnectionSource?) {
+        TableUtils.createTable(connectionSource, KeyValuePair::class.java)
     }
 
     override fun onUpgrade(database: SQLiteDatabase?, connectionSource: ConnectionSource?,
                            oldVersion: Int, newVersion: Int) {
         if (oldVersion < 1) {
-            safeWrapper {
-                PrivateDatabase.kvPairDao.queryBuilder().where().`in`("key",
+            PrivateDatabase.kvPairDao.queryBuilder().where().`in`("key",
                     Key.id, Key.tfo, Key.serviceMode, Key.portProxy, Key.portLocalDns, Key.portTransproxy).query()
-            }.forEach { kvPairDao.replaceSafe(it) }
+                    .forEach { kvPairDao.createOrUpdate(it) }
         }
 
         if (oldVersion < 2) {
-            kvPairDao.replaceSafe(KeyValuePair(Acl.CUSTOM_RULES).put(Acl().fromId(Acl.CUSTOM_RULES).toString()))
+            kvPairDao.createOrUpdate(KeyValuePair(Acl.CUSTOM_RULES).put(Acl().fromId(Acl.CUSTOM_RULES).toString()))
         }
     }
 

mobile/src/main/java/com/github/shadowsocks/plugin/NativePlugin.kt

@@ -25,7 +25,7 @@ import android.os.Bundle
 
 class NativePlugin(resolveInfo: ResolveInfo) : ResolvedPlugin(resolveInfo) {
     init {
-        check(resolveInfo.providerInfo != null)
+        assert(resolveInfo.providerInfo != null)
     }
 
     override val metaData: Bundle get() = resolveInfo.providerInfo.metaData

mobile/src/main/java/com/github/shadowsocks/plugin/PluginManager.kt

@@ -32,6 +32,7 @@ import android.util.Base64
 import android.util.Log
 import com.github.shadowsocks.App.Companion.app
 import com.github.shadowsocks.utils.Commandline
+import com.github.shadowsocks.utils.signaturesCompat
 import eu.chainfire.libsuperuser.Shell
 import java.io.File
 import java.io.FileNotFoundException
@@ -47,7 +48,7 @@ object PluginManager {
      * public key yet since it will also automatically trust packages signed by the same signatures, e.g. debug keys.
      */
     val trustedSignatures by lazy {
-        app.info.signatures.toSet() +
+        app.info.signaturesCompat.toSet() +
                 Signature(Base64.decode(  // @Mygod
                 """
                     |MIIDWzCCAkOgAwIBAgIEUzfv8DANBgkqhkiG9w0BAQsFADBdMQswCQYDVQQGEwJD
@@ -134,7 +135,7 @@ object PluginManager {
     private fun initNative(options: PluginOptions): String? {
         val providers = app.packageManager.queryIntentContentProviders(
                 Intent(PluginContract.ACTION_NATIVE_PLUGIN, buildUri(options.id)), 0)
-        check(providers.size == 1)
+        assert(providers.size == 1)
         val uri = Uri.Builder()
                 .scheme(ContentResolver.SCHEME_CONTENT)
                 .authority(providers[0].providerInfo.authority)
@@ -154,7 +155,7 @@ object PluginManager {
         out.putString(PluginContract.EXTRA_OPTIONS, options.id)
         val result = cr.call(uri, PluginContract.METHOD_GET_EXECUTABLE, null, out)
                 .getString(PluginContract.EXTRA_ENTRY)
-        check(File(result).canExecute())
+        assert(File(result).canExecute())
         return result
     }
 
@@ -173,7 +174,7 @@ object PluginManager {
             do {
                 val path = cursor.getString(0)
                 val file = File(pluginDir, path)
-                check(file.absolutePath.startsWith(pluginDirPath))
+                assert(file.absolutePath.startsWith(pluginDirPath))
                 cr.openInputStream(uri.buildUpon().path(path).build()).use { inStream ->
                     file.outputStream().use { outStream -> inStream.copyTo(outStream) }
                 }

mobile/src/main/java/com/github/shadowsocks/plugin/ResolvedPlugin.kt

@@ -24,6 +24,7 @@ import android.content.pm.ResolveInfo
 import android.graphics.drawable.Drawable
 import android.os.Bundle
 import com.github.shadowsocks.App.Companion.app
+import com.github.shadowsocks.utils.signaturesCompat
 
 abstract class ResolvedPlugin(protected val resolveInfo: ResolveInfo) : Plugin() {
     protected abstract val metaData: Bundle
@@ -34,6 +35,6 @@ abstract class ResolvedPlugin(protected val resolveInfo: ResolveInfo) : Plugin()
     override val defaultConfig: String by lazy { metaData.getString(PluginContract.METADATA_KEY_DEFAULT_CONFIG) }
     override val packageName: String get() = resolveInfo.resolvePackageName
     override val trusted by lazy {
-        app.getPackageInfo(packageName).signatures.any(PluginManager.trustedSignatures::contains)
+        app.getPackageInfo(packageName).signaturesCompat.any(PluginManager.trustedSignatures::contains)
     }
 }

mobile/src/main/java/com/github/shadowsocks/preference/OrmLitePreferenceDataStore.kt

@@ -22,20 +22,17 @@ package com.github.shadowsocks.preference
 
 import android.support.v7.preference.PreferenceDataStore
 import com.github.shadowsocks.database.KeyValuePair
-import com.github.shadowsocks.database.deleteByIdSafe
-import com.github.shadowsocks.database.queryByIdSafe
-import com.github.shadowsocks.database.replaceSafe
 import com.j256.ormlite.dao.Dao
 import java.util.HashSet
 
 @Suppress("MemberVisibilityCanPrivate", "unused")
 open class OrmLitePreferenceDataStore(private val kvPairDao: Dao<KeyValuePair, String?>) : PreferenceDataStore() {
-    fun getBoolean(key: String?) = kvPairDao.queryByIdSafe(key)?.boolean
-    fun getFloat(key: String?) = kvPairDao.queryByIdSafe(key)?.float
-    fun getInt(key: String?) = kvPairDao.queryByIdSafe(key)?.int
-    fun getLong(key: String?) = kvPairDao.queryByIdSafe(key)?.long
-    fun getString(key: String?) = kvPairDao.queryByIdSafe(key)?.string
-    fun getStringSet(key: String?) = kvPairDao.queryByIdSafe(key)?.stringSet
+    fun getBoolean(key: String?) = kvPairDao.queryForId(key)?.boolean
+    fun getFloat(key: String?) = kvPairDao.queryForId(key)?.float
+    fun getInt(key: String?) = kvPairDao.queryForId(key)?.int
+    fun getLong(key: String?) = kvPairDao.queryForId(key)?.long
+    fun getString(key: String?) = kvPairDao.queryForId(key)?.string
+    fun getStringSet(key: String?) = kvPairDao.queryForId(key)?.stringSet
 
     override fun getBoolean(key: String?, defValue: Boolean) = getBoolean(key) ?: defValue
     override fun getFloat(key: String?, defValue: Float) = getFloat(key) ?: defValue
@@ -49,32 +46,32 @@ open class OrmLitePreferenceDataStore(private val kvPairDao: Dao<KeyValuePair, S
     fun putInt(key: String?, value: Int?) = if (value == null) remove(key) else putInt(key, value)
     fun putLong(key: String?, value: Long?) = if (value == null) remove(key) else putLong(key, value)
     override fun putBoolean(key: String?, value: Boolean) {
-        kvPairDao.replaceSafe(KeyValuePair(key).put(value))
+        kvPairDao.createOrUpdate(KeyValuePair(key).put(value))
         fireChangeListener(key)
     }
     override fun putFloat(key: String?, value: Float) {
-        kvPairDao.replaceSafe(KeyValuePair(key).put(value))
+        kvPairDao.createOrUpdate(KeyValuePair(key).put(value))
         fireChangeListener(key)
     }
     override fun putInt(key: String?, value: Int) {
-        kvPairDao.replaceSafe(KeyValuePair(key).put(value))
+        kvPairDao.createOrUpdate(KeyValuePair(key).put(value))
         fireChangeListener(key)
     }
     override fun putLong(key: String?, value: Long) {
-        kvPairDao.replaceSafe(KeyValuePair(key).put(value))
+        kvPairDao.createOrUpdate(KeyValuePair(key).put(value))
         fireChangeListener(key)
     }
     override fun putString(key: String?, value: String?) = if (value == null) remove(key) else {
-        kvPairDao.replaceSafe(KeyValuePair(key).put(value))
+        kvPairDao.createOrUpdate(KeyValuePair(key).put(value))
         fireChangeListener(key)
     }
     override fun putStringSet(key: String?, values: MutableSet<String>?) = if (values == null) remove(key) else {
-        kvPairDao.replaceSafe(KeyValuePair(key).put(values))
+        kvPairDao.createOrUpdate(KeyValuePair(key).put(values))
         fireChangeListener(key)
     }
 
     fun remove(key: String?) {
-        kvPairDao.deleteByIdSafe(key)
+        kvPairDao.deleteById(key)
         fireChangeListener(key)
     }
 

mobile/src/main/java/com/github/shadowsocks/utils/Utils.kt

@@ -3,11 +3,14 @@ package com.github.shadowsocks.utils
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
+import android.content.pm.PackageInfo
 import android.content.res.Resources
 import android.os.Build
 import android.support.annotation.AttrRes
 import android.support.v4.app.Fragment
 import android.support.v4.app.FragmentManager
+import android.support.v4.content.ContextCompat
+import android.support.v4.os.BuildCompat
 import android.support.v7.util.SortedList
 import android.util.TypedValue
 import com.github.shadowsocks.App.Companion.app
@@ -50,6 +53,12 @@ fun thread(start: Boolean = true, isDaemon: Boolean = false, contextClassLoader:
 val URLConnection.responseLength: Long
     get() = if (Build.VERSION.SDK_INT >= 24) contentLengthLong else contentLength.toLong()
 
+inline fun <reified T> Context.systemService() = ContextCompat.getSystemService(this, T::class.java)!!
+
+val PackageInfo.signaturesCompat get() =
+    if (BuildCompat.isAtLeastP()) signingCertificateHistory.flatten()
+    else @Suppress("DEPRECATION") signatures.asIterable()
+
 /**
  * Based on: https://stackoverflow.com/a/15656428/2245107
  */

mobile/src/main/java/com/github/shadowsocks/widget/ShrinkUpwardBehavior.kt

@@ -22,18 +22,20 @@ package com.github.shadowsocks.widget
 
 import android.animation.ValueAnimator
 import android.content.Context
+import android.support.design.animation.AnimationConsts
 import android.support.design.widget.CoordinatorLayout
 import android.support.design.widget.Snackbar
-import android.support.design.widget.SnackbarAnimation
+import android.support.design.widget.SnackbarConsts
 import android.util.AttributeSet
 import android.view.View
 import android.view.accessibility.AccessibilityManager
+import com.github.shadowsocks.utils.systemService
 
 /**
  * Full credits go to: https://stackoverflow.com/a/35904421/2245107
  */
 class ShrinkUpwardBehavior(context: Context, attrs: AttributeSet) : CoordinatorLayout.Behavior<View>(context, attrs) {
-    private val accessibility = context.getSystemService(Context.ACCESSIBILITY_SERVICE) as AccessibilityManager
+    private val accessibility = context.systemService<AccessibilityManager>()
 
     override fun layoutDependsOn(parent: CoordinatorLayout, child: View, dependency: View): Boolean =
             dependency is Snackbar.SnackbarLayout
@@ -52,8 +54,8 @@ class ShrinkUpwardBehavior(context: Context, attrs: AttributeSet) : CoordinatorL
             val animator = ValueAnimator()
             val start = child.height
             animator.setIntValues(start, parent.height)
-            animator.interpolator = SnackbarAnimation.FAST_OUT_SLOW_IN_INTERPOLATOR
-            animator.duration = SnackbarAnimation.ANIMATION_DURATION
+            animator.interpolator = AnimationConsts.FAST_OUT_SLOW_IN_INTERPOLATOR
+            animator.duration = SnackbarConsts.ANIMATION_DURATION
             @Suppress("NAME_SHADOWING")
             animator.addUpdateListener { animator ->
                 child.layoutParams.height = animator.animatedValue as Int

plugin/build.gradle

@@ -5,7 +5,7 @@ apply from: 'gradle-mvn-push.gradle'
 
 android {
     buildToolsVersion rootProject.buildToolsVersion
-    compileSdkVersion rootProject.sdkVersion
+    compileSdkVersion rootProject.compileSdkVersion
 
     defaultConfig {
         minSdkVersion rootProject.minSdkVersion

plugin/src/main/java/com/github/shadowsocks/plugin/NativePluginProvider.kt

@@ -61,7 +61,7 @@ abstract class NativePluginProvider : ContentProvider() {
 
     override fun query(uri: Uri, projection: Array<out String>?, selection: String?, selectionArgs: Array<out String>?,
                        sortOrder: String?): Cursor {
-        check(selection == null && selectionArgs == null && sortOrder == null)
+        assert(selection == null && selectionArgs == null && sortOrder == null)
         val result = MatrixCursor(projection)
         populateFiles(PathProvider(uri, result))
         return result
@@ -79,7 +79,7 @@ abstract class NativePluginProvider : ContentProvider() {
 
     abstract fun openFile(uri: Uri?): ParcelFileDescriptor
     override fun openFile(uri: Uri?, mode: String?): ParcelFileDescriptor {
-        check(mode == "r")
+        assert(mode == "r")
         return openFile(uri)
     }