refactor: modify response json

# Conflicts:
#	CMakeLists.txt
#	client/android/src/org/amnezia/vpn/AmneziaActivity.kt

.github/workflows/deploy.yml

@@ -16,7 +16,10 @@ jobs:
       QT_VERSION: 6.6.2
       QIF_VERSION: 4.7
       PROD_AGW_PUBLIC_KEY: ${{ secrets.PROD_AGW_PUBLIC_KEY }}
+      PROD_S3_ENDPOINT: ${{ secrets.PROD_S3_ENDPOINT }}
       DEV_AGW_PUBLIC_KEY: ${{ secrets.DEV_AGW_PUBLIC_KEY }}
+      DEV_AGW_ENDPOINT: ${{ secrets.DEV_AGW_ENDPOINT }}
+      DEV_S3_ENDPOINT: ${{ secrets.DEV_S3_ENDPOINT }}
 
     steps:
     - name: 'Install Qt'
@@ -83,7 +86,10 @@ jobs:
       QIF_VERSION: 4.7
       BUILD_ARCH: 64
       PROD_AGW_PUBLIC_KEY: ${{ secrets.PROD_AGW_PUBLIC_KEY }}
+      PROD_S3_ENDPOINT: ${{ secrets.PROD_S3_ENDPOINT }}
       DEV_AGW_PUBLIC_KEY: ${{ secrets.DEV_AGW_PUBLIC_KEY }}
+      DEV_AGW_ENDPOINT: ${{ secrets.DEV_AGW_ENDPOINT }}
+      DEV_S3_ENDPOINT: ${{ secrets.DEV_S3_ENDPOINT }}
 
     steps:
     - name: 'Get sources'
@@ -146,7 +152,10 @@ jobs:
       CC: cc
       CXX: c++
       PROD_AGW_PUBLIC_KEY: ${{ secrets.PROD_AGW_PUBLIC_KEY }}
+      PROD_S3_ENDPOINT: ${{ secrets.PROD_S3_ENDPOINT }}
       DEV_AGW_PUBLIC_KEY: ${{ secrets.DEV_AGW_PUBLIC_KEY }}
+      DEV_AGW_ENDPOINT: ${{ secrets.DEV_AGW_ENDPOINT }}
+      DEV_S3_ENDPOINT: ${{ secrets.DEV_S3_ENDPOINT }}
 
     steps:
     - name: 'Setup xcode'
@@ -238,7 +247,10 @@ jobs:
       QT_VERSION: 6.4.3
       QIF_VERSION: 4.6
       PROD_AGW_PUBLIC_KEY: ${{ secrets.PROD_AGW_PUBLIC_KEY }}
+      PROD_S3_ENDPOINT: ${{ secrets.PROD_S3_ENDPOINT }}
       DEV_AGW_PUBLIC_KEY: ${{ secrets.DEV_AGW_PUBLIC_KEY }}
+      DEV_AGW_ENDPOINT: ${{ secrets.DEV_AGW_ENDPOINT }}
+      DEV_S3_ENDPOINT: ${{ secrets.DEV_S3_ENDPOINT }}
 
     steps:
     - name: 'Setup xcode'
@@ -301,10 +313,13 @@ jobs:
 
     env:
       ANDROID_BUILD_PLATFORM: android-34
-      QT_VERSION: 6.7.2
+      QT_VERSION: 6.7.3
       QT_MODULES: 'qtremoteobjects qt5compat qtimageformats qtshadertools'
       PROD_AGW_PUBLIC_KEY: ${{ secrets.PROD_AGW_PUBLIC_KEY }}
+      PROD_S3_ENDPOINT: ${{ secrets.PROD_S3_ENDPOINT }}
       DEV_AGW_PUBLIC_KEY: ${{ secrets.DEV_AGW_PUBLIC_KEY }}
+      DEV_AGW_ENDPOINT: ${{ secrets.DEV_AGW_ENDPOINT }}
+      DEV_S3_ENDPOINT: ${{ secrets.DEV_S3_ENDPOINT }}
 
     steps:
     - name: 'Install desktop Qt'
@@ -403,13 +418,13 @@ jobs:
         ANDROID_KEYSTORE_KEY_ALIAS: ${{ secrets.ANDROID_RELEASE_KEYSTORE_KEY_ALIAS }}
         ANDROID_KEYSTORE_KEY_PASS: ${{ secrets.ANDROID_RELEASE_KEYSTORE_KEY_PASS }}
       shell: bash
-      run: ./deploy/build_android.sh --aab --apk all --build-platform ${{ env.ANDROID_BUILD_PLATFORM }}
+      run: ./deploy/build_android.sh --aab --play --apk all --build-platform ${{ env.ANDROID_BUILD_PLATFORM }}
 
     - name: 'Upload x86_64 apk'
       uses: actions/upload-artifact@v4
       with:
         name: AmneziaVPN-android-x86_64
-        path: deploy/build/AmneziaVPN-x86_64-release.apk
+        path: deploy/build/AmneziaVPN-oss-x86_64-release.apk
         compression-level: 0
         retention-days: 7
 
@@ -417,7 +432,7 @@ jobs:
       uses: actions/upload-artifact@v4
       with:
         name: AmneziaVPN-android-x86
-        path: deploy/build/AmneziaVPN-x86-release.apk
+        path: deploy/build/AmneziaVPN-oss-x86-release.apk
         compression-level: 0
         retention-days: 7
 
@@ -425,7 +440,7 @@ jobs:
       uses: actions/upload-artifact@v4
       with:
         name: AmneziaVPN-android-arm64-v8a
-        path: deploy/build/AmneziaVPN-arm64-v8a-release.apk
+        path: deploy/build/AmneziaVPN-oss-arm64-v8a-release.apk
         compression-level: 0
         retention-days: 7
 
@@ -433,7 +448,7 @@ jobs:
       uses: actions/upload-artifact@v4
       with:
         name: AmneziaVPN-android-armeabi-v7a
-        path: deploy/build/AmneziaVPN-armeabi-v7a-release.apk
+        path: deploy/build/AmneziaVPN-oss-armeabi-v7a-release.apk
         compression-level: 0
         retention-days: 7
 
@@ -441,7 +456,7 @@ jobs:
       uses: actions/upload-artifact@v4
       with:
         name: AmneziaVPN-android
-        path: deploy/build/AmneziaVPN-release.aab
+        path: deploy/build/AmneziaVPN-play-release.aab
         compression-level: 0
         retention-days: 7
 

.github/workflows/tag-deploy.yml

@@ -16,7 +16,10 @@ jobs:
       QT_VERSION: 6.4.1
       QIF_VERSION: 4.5
       PROD_AGW_PUBLIC_KEY: ${{ secrets.PROD_AGW_PUBLIC_KEY }}
+      PROD_S3_ENDPOINT: ${{ secrets.PROD_S3_ENDPOINT }}
       DEV_AGW_PUBLIC_KEY: ${{ secrets.DEV_AGW_PUBLIC_KEY }}
+      DEV_AGW_ENDPOINT: ${{ secrets.DEV_AGW_ENDPOINT }}
+      DEV_S3_ENDPOINT: ${{ secrets.DEV_S3_ENDPOINT }}
 
     steps:
     - name: 'Install desktop Qt'

CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.25.0 FATAL_ERROR)
 
 set(PROJECT AmneziaVPN)
 
-project(${PROJECT} VERSION 4.8.1.9
+project(${PROJECT} VERSION 4.8.2.3
         DESCRIPTION "AmneziaVPN"
         HOMEPAGE_URL "https://amnezia.org/"
 )
@@ -11,7 +11,7 @@ string(TIMESTAMP CURRENT_DATE "%Y-%m-%d")
 set(RELEASE_DATE "${CURRENT_DATE}")
 
 set(APP_MAJOR_VERSION ${CMAKE_PROJECT_VERSION_MAJOR}.${CMAKE_PROJECT_VERSION_MINOR}.${CMAKE_PROJECT_VERSION_PATCH})
-set(APP_ANDROID_VERSION_CODE 65)
+set(APP_ANDROID_VERSION_CODE 2069)
 
 if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
     set(MZ_PLATFORM_NAME "linux")

README.md

@@ -10,21 +10,17 @@ Amnezia is an open-source VPN client, with a key feature that enables you to dep
 
 <br>
 
-<a href="https://github.com/amnezia-vpn/amnezia-client/releases/download/4.7.0.0/AmneziaVPN_4.7.0.0_x64.exe"><img src="https://github.com/amnezia-vpn/amnezia-client/blob/dev/metadata/img-readme/win.png" width="150" style="max-width: 100%;"></a> 
-<a href="https://github.com/amnezia-vpn/amnezia-client/releases/download/4.7.0.0/AmneziaVPN_4.7.0.0.dmg"><img src="https://github.com/amnezia-vpn/amnezia-client/blob/dev/metadata/img-readme/mac.png" width="150" style="max-width: 100%;"></a> 
-<a href="https://github.com/amnezia-vpn/amnezia-client/releases/download/4.7.0.0/AmneziaVPN_Linux_4.7.0.0.tar.zip"><img src="https://github.com/amnezia-vpn/amnezia-client/blob/dev/metadata/img-readme/lin.png" width="150" style="max-width: 100%;"></a>
-<a href="https://github.com/amnezia-vpn/amnezia-client/releases/tag/4.7.0.0"><img src="https://github.com/amnezia-vpn/amnezia-client/blob/dev/metadata/img-readme/andr.png" width="150" style="max-width: 100%;"></a>
-
-<br>
-
+<a href="https://amnezia.org/downloads"><img src="https://github.com/amnezia-vpn/amnezia-client/blob/dev/metadata/img-readme/download.png" width="150" style="max-width: 100%;"></a>
 <a href="https://play.google.com/store/search?q=amnezia+vpn&c=apps"><img src="https://github.com/amnezia-vpn/amnezia-client/blob/dev/metadata/img-readme/play.png" width="150" style="max-width: 100%;"></a>
 <a href="https://apps.apple.com/us/app/amneziavpn/id1600529900"><img src="https://github.com/amnezia-vpn/amnezia-client/blob/dev/metadata/img-readme/apl.png" width="150" style="max-width: 100%;"></a>
 
+[Alternative download link (mirror)](https://storage.googleapis.com/kldscp/amnezia.org/downloads)
 
 [All releases](https://github.com/amnezia-vpn/amnezia-client/releases)
 
 <br>
 
+<a href="https://www.testiny.io"><img src="https://github.com/amnezia-vpn/amnezia-client/blob/dev/metadata/img-readme/testiny.png" height="28px"></a>
 
 ## Features
 
@@ -37,7 +33,7 @@ Amnezia is an open-source VPN client, with a key feature that enables you to dep
 
 ## Links
 
-- [https://amnezia.org](https://amnezia.org) - project website  
+- [https://amnezia.org](https://amnezia.org) - project website | [Alternative link (mirror)](https://storage.googleapis.com/kldscp/amnezia.org)
 - [https://www.reddit.com/r/AmneziaVPN](https://www.reddit.com/r/AmneziaVPN) - Reddit  
 - [https://t.me/amnezia_vpn_en](https://t.me/amnezia_vpn_en) - Telegram support channel (English) 
 - [https://t.me/amnezia_vpn_ir](https://t.me/amnezia_vpn_ir) - Telegram support channel (Farsi) 

client/CMakeLists.txt

@@ -25,10 +25,11 @@ execute_process(
 add_definitions(-DGIT_COMMIT_HASH="${GIT_COMMIT_HASH}")
 
 add_definitions(-DPROD_AGW_PUBLIC_KEY="$ENV{PROD_AGW_PUBLIC_KEY}")
-add_definitions(-DPROD_PROXY_STORAGE_KEY="$ENV{PROD_PROXY_STORAGE_KEY}")
+add_definitions(-DPROD_S3_ENDPOINT="$ENV{PROD_S3_ENDPOINT}")
 
 add_definitions(-DDEV_AGW_PUBLIC_KEY="$ENV{DEV_AGW_PUBLIC_KEY}")
 add_definitions(-DDEV_AGW_ENDPOINT="$ENV{DEV_AGW_ENDPOINT}")
+add_definitions(-DDEV_S3_ENDPOINT="$ENV{DEV_S3_ENDPOINT}")
 
 if(IOS)
     set(PACKAGES ${PACKAGES} Multimedia)

client/amnezia_application.cpp

@@ -111,10 +111,11 @@ void AmneziaApplication::init()
         qFatal("Android controller initialization failed");
     }
 
-    connect(AndroidController::instance(), &AndroidController::importConfigFromOutside, [this](QString data) {
-        m_pageController->goToPageHome();
+    connect(AndroidController::instance(), &AndroidController::importConfigFromOutside, this, [this](QString data) {
+        emit m_pageController->goToPageHome();
         m_importController->extractConfigFromData(data);
-        m_pageController->goToPageViewConfig();
+        data.clear();
+        emit m_pageController->goToPageViewConfig();
     });
 
     m_engine->addImageProvider(QLatin1String("installedAppImage"), new InstalledAppsImageProvider);
@@ -122,16 +123,16 @@ void AmneziaApplication::init()
 
 #ifdef Q_OS_IOS
     IosController::Instance()->initialize();
-    connect(IosController::Instance(), &IosController::importConfigFromOutside, [this](QString data) {
-        m_pageController->goToPageHome();
+    connect(IosController::Instance(), &IosController::importConfigFromOutside, this, [this](QString data) {
+        emit m_pageController->goToPageHome();
         m_importController->extractConfigFromData(data);
-        m_pageController->goToPageViewConfig();
+        emit m_pageController->goToPageViewConfig();
     });
 
-    connect(IosController::Instance(), &IosController::importBackupFromOutside, [this](QString filePath) {
-        m_pageController->goToPageHome();
+    connect(IosController::Instance(), &IosController::importBackupFromOutside, this, [this](QString filePath) {
+        emit m_pageController->goToPageHome();
         m_pageController->goToPageSettingsBackup();
-        m_settingsController->importBackupFromOutside(filePath);
+        emit m_settingsController->importBackupFromOutside(filePath);
     });
 
     QTimer::singleShot(0, this, [this]() { AmneziaVPN::toggleScreenshots(m_settings->isScreenshotsEnabled()); });

client/android/billing/build.gradle.kts

@@ -0,0 +1,19 @@
+plugins {
+    id(libs.plugins.android.library.get().pluginId)
+    id(libs.plugins.kotlin.android.get().pluginId)
+}
+
+kotlin {
+    jvmToolchain(17)
+}
+
+android {
+    namespace = "org.amnezia.vpn.billing"
+}
+
+dependencies {
+    compileOnly(project(":utils"))
+    implementation(libs.androidx.core)
+    implementation(libs.kotlinx.coroutines)
+    implementation(libs.android.billing)
+}

client/android/billing/src/main/kotlin/BillingException.kt

@@ -0,0 +1,65 @@
+import com.android.billingclient.api.BillingClient.BillingResponseCode.BILLING_UNAVAILABLE
+import com.android.billingclient.api.BillingClient.BillingResponseCode.DEVELOPER_ERROR
+import com.android.billingclient.api.BillingClient.BillingResponseCode.ERROR
+import com.android.billingclient.api.BillingClient.BillingResponseCode.FEATURE_NOT_SUPPORTED
+import com.android.billingclient.api.BillingClient.BillingResponseCode.ITEM_ALREADY_OWNED
+import com.android.billingclient.api.BillingClient.BillingResponseCode.ITEM_NOT_OWNED
+import com.android.billingclient.api.BillingClient.BillingResponseCode.ITEM_UNAVAILABLE
+import com.android.billingclient.api.BillingClient.BillingResponseCode.NETWORK_ERROR
+import com.android.billingclient.api.BillingClient.BillingResponseCode.SERVICE_DISCONNECTED
+import com.android.billingclient.api.BillingClient.BillingResponseCode.SERVICE_UNAVAILABLE
+import com.android.billingclient.api.BillingClient.BillingResponseCode.USER_CANCELED
+import com.android.billingclient.api.BillingResult
+import org.amnezia.vpn.util.ErrorCode
+
+internal class BillingException(
+    billingResult: BillingResult,
+    retryable: Boolean = false
+) : Exception(billingResult.toString()) {
+
+    constructor(msg: String) : this(BillingResult.newBuilder()
+        .setResponseCode(DEVELOPER_ERROR)
+        .setDebugMessage(msg)
+        .build())
+
+    val errorCode: Int
+    val isCanceled = billingResult.responseCode == USER_CANCELED
+    val isRetryable = retryable || billingResult.responseCode in setOf(
+        NETWORK_ERROR,
+        SERVICE_DISCONNECTED,
+        SERVICE_UNAVAILABLE,
+        ERROR
+    )
+
+    init {
+        when (billingResult.responseCode) {
+            ERROR -> {
+                errorCode = ErrorCode.BillingGooglePlayError
+            }
+
+            BILLING_UNAVAILABLE, SERVICE_DISCONNECTED, SERVICE_UNAVAILABLE -> {
+                errorCode = ErrorCode.BillingUnavailable
+            }
+
+            DEVELOPER_ERROR, FEATURE_NOT_SUPPORTED, ITEM_NOT_OWNED -> {
+                errorCode = ErrorCode.BillingError
+            }
+
+            ITEM_ALREADY_OWNED -> {
+                errorCode = ErrorCode.SubscriptionAlreadyOwned
+            }
+
+            ITEM_UNAVAILABLE -> {
+                errorCode = ErrorCode.SubscriptionUnavailable
+            }
+
+            NETWORK_ERROR -> {
+                errorCode = ErrorCode.BillingNetworkError
+            }
+
+            else -> {
+                errorCode = ErrorCode.BillingError
+            }
+        }
+    }
+}

client/android/billing/src/main/kotlin/BillingProvider.kt

@@ -0,0 +1,320 @@
+import android.app.Activity
+import android.content.Context
+import com.android.billingclient.api.AcknowledgePurchaseParams
+import com.android.billingclient.api.BillingClient
+import com.android.billingclient.api.BillingClient.BillingResponseCode
+import com.android.billingclient.api.BillingClient.ProductType
+import com.android.billingclient.api.BillingClientStateListener
+import com.android.billingclient.api.BillingFlowParams
+import com.android.billingclient.api.BillingFlowParams.SubscriptionUpdateParams.ReplacementMode
+import com.android.billingclient.api.BillingResult
+import com.android.billingclient.api.GetBillingConfigParams
+import com.android.billingclient.api.PendingPurchasesParams
+import com.android.billingclient.api.ProductDetails
+import com.android.billingclient.api.Purchase
+import com.android.billingclient.api.PurchasesUpdatedListener
+import com.android.billingclient.api.QueryProductDetailsParams
+import com.android.billingclient.api.QueryProductDetailsParams.Product
+import com.android.billingclient.api.QueryPurchasesParams
+import com.android.billingclient.api.acknowledgePurchase
+import com.android.billingclient.api.queryProductDetails
+import com.android.billingclient.api.queryPurchasesAsync
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.firstOrNull
+import kotlinx.coroutines.withContext
+import org.amnezia.vpn.util.ErrorCode
+import org.amnezia.vpn.util.Log
+import org.json.JSONArray
+import org.json.JSONObject
+
+private const val TAG = "BillingProvider"
+private const val PRODUCT_ID = "premium"
+
+class BillingProvider(context: Context) : AutoCloseable {
+
+    private var billingClient: BillingClient
+    private var subscriptionPurchases = MutableStateFlow<Pair<BillingResult, List<Purchase>?>?>(null)
+
+    private val purchasesUpdatedListeners = PurchasesUpdatedListener { billingResult, purchases ->
+        Log.v(TAG, "Purchases updated: $billingResult")
+        subscriptionPurchases.value = billingResult to purchases
+    }
+
+    init {
+        billingClient = BillingClient.newBuilder(context)
+            .setListener(purchasesUpdatedListeners)
+            .enablePendingPurchases(PendingPurchasesParams.newBuilder().enableOneTimeProducts().build())
+            .build()
+    }
+
+    private suspend fun connect() {
+        if (billingClient.isReady) return
+
+        Log.v(TAG, "Billing client connection")
+        val connection = CompletableDeferred<Unit>()
+        withContext(Dispatchers.IO) {
+            billingClient.startConnection(object : BillingClientStateListener {
+                override fun onBillingSetupFinished(billingResult: BillingResult) {
+                    Log.v(TAG, "Billing setup finished: $billingResult")
+                    if (billingResult.isOk) {
+                        connection.complete(Unit)
+                    } else {
+                        Log.e(TAG, "Billing setup failed: $billingResult")
+                        connection.completeExceptionally(BillingException(billingResult))
+                    }
+                }
+
+                override fun onBillingServiceDisconnected() {
+                    Log.w(TAG, "Billing service disconnected")
+                }
+            })
+        }
+        connection.await()
+    }
+
+    private suspend fun handleBillingApiCall(block: suspend () -> JSONObject): JSONObject {
+        val numberAttempts = 3
+        var attemptCount = 0
+        while (true) {
+            try {
+                return block()
+            } catch (e: BillingException) {
+                if (e.isCanceled) {
+                    Log.w(TAG, "Billing canceled")
+                    return JSONObject().put("responseCode", ErrorCode.BillingCanceled)
+                } else if (e.isRetryable && attemptCount < numberAttempts) {
+                    Log.d(TAG, "Retryable error: $e")
+                    ++attemptCount
+                    delay(1000)
+                } else {
+                    Log.e(TAG, "Billing error: $e")
+                    return JSONObject().put("responseCode", e.errorCode)
+                }
+            } catch (_: CancellationException) {
+                Log.w(TAG, "Billing coroutine canceled")
+                return JSONObject().put("responseCode", ErrorCode.BillingCanceled)
+            }
+        }
+    }
+
+    suspend fun getSubscriptionPlans(): JSONObject {
+        Log.v(TAG, "Get subscription plans")
+
+        val productDetailsList = getProductDetails()
+        val resultJson = JSONObject().put("responseCode", ErrorCode.NoError)
+        val productArray = JSONArray().also { resultJson.put("products", it) }
+        productDetailsList?.forEach { productDetails ->
+            val product = JSONObject().also { productArray.put(it) }
+                .put("productId", productDetails.productId)
+                .put("name", productDetails.name)
+            val offers = JSONArray().also { product.put("offers", it) }
+            productDetails.subscriptionOfferDetails?.forEach { offerDetails ->
+                val offer = JSONObject().also { offers.put(it) }
+                    .put("basePlanId", offerDetails.basePlanId)
+                    .put("offerId", offerDetails.offerId)
+                    .put("offerToken", offerDetails.offerToken)
+                val pricingPhases = JSONArray().also { offer.put("pricingPhases", it) }
+                offerDetails.pricingPhases.pricingPhaseList.forEach { phase ->
+                    JSONObject().also { pricingPhases.put(it) }
+                        .put("billingCycleCount", phase.billingCycleCount)
+                        .put("billingPeriod", phase.billingPeriod)
+                        .put("formatedPrice", phase.formattedPrice)
+                        .put("recurrenceMode", phase.recurrenceMode)
+                }
+            }
+        }
+        return resultJson
+    }
+
+    private suspend fun getProductDetails(): List<ProductDetails>? {
+        Log.v(TAG, "Get product details")
+
+        val productDetailsParams = Product.newBuilder()
+            .setProductId(PRODUCT_ID)
+            .setProductType(ProductType.SUBS)
+            .build()
+
+        val queryProductDetailsParams = QueryProductDetailsParams.newBuilder()
+            .setProductList(listOf(productDetailsParams))
+            .build()
+
+        val result = withContext(Dispatchers.IO) {
+            billingClient.queryProductDetails(queryProductDetailsParams)
+        }
+
+        Log.v(TAG, "Query product details result: ${result.billingResult}")
+
+        if (!result.billingResult.isOk) {
+            Log.e(TAG, "Failed to get product details: ${result.billingResult}")
+            throw BillingException(result.billingResult)
+        }
+
+        return result.productDetailsList
+    }
+
+    suspend fun getCustomerCountryCode(): JSONObject {
+        Log.v(TAG, "Get customer country code")
+
+        val deferred = CompletableDeferred<String>()
+        withContext(Dispatchers.IO) {
+            billingClient.getBillingConfigAsync(GetBillingConfigParams.newBuilder().build(),
+                { billingResult, billingConfig ->
+                    Log.v(TAG, "Billing config: $billingResult, ${billingConfig?.countryCode}")
+                    if (billingResult.isOk) {
+                        deferred.complete(billingConfig?.countryCode ?: "")
+                    } else {
+                        deferred.completeExceptionally(BillingException(billingResult))
+                    }
+                })
+        }
+        val countryCode = deferred.await()
+
+        return JSONObject()
+            .put("responseCode", ErrorCode.NoError)
+            .put("countryCode", countryCode)
+    }
+
+    suspend fun purchaseSubscription(
+        activity: Activity,
+        offerToken: String,
+        oldPurchaseToken: String? = null
+    ): JSONObject {
+        Log.v(TAG, "Purchase subscription")
+        Log.v(TAG, "Offer token: $offerToken")
+        oldPurchaseToken?.let { Log.v(TAG, "Old purchase token: $it") }
+
+        if (offerToken.isBlank()) throw BillingException("offerToken can not be empty")
+
+        val productDetails = getProductDetails()?.let {
+            it.filter { it.productId == PRODUCT_ID }
+        }?.firstOrNull() ?: throw BillingException("Product details not found")
+
+        Log.v(TAG, "Filtered product details:\n$productDetails")
+
+        val productDetail = BillingFlowParams.ProductDetailsParams.newBuilder()
+            .setProductDetails(productDetails)
+            .setOfferToken(offerToken)
+            .build()
+
+        val subscriptionUpdateParams = oldPurchaseToken?.let {
+            BillingFlowParams.SubscriptionUpdateParams.newBuilder()
+                .setOldPurchaseToken(oldPurchaseToken)
+                .setSubscriptionReplacementMode(ReplacementMode.WITHOUT_PRORATION)
+                .build()
+        }
+
+        val billingResult = billingClient.launchBillingFlow(activity, BillingFlowParams.newBuilder()
+            .setProductDetailsParamsList(listOf(productDetail))
+            .apply { subscriptionUpdateParams?.let { setSubscriptionUpdateParams(it) } }
+            .build())
+
+        Log.v(TAG, "Start billing flow result: $billingResult")
+
+        if (billingResult.responseCode == BillingResponseCode.ITEM_ALREADY_OWNED) {
+            Log.w(TAG, "Attempting to purchase already owned product")
+            val purchases = queryPurchases()
+            if (purchases.any { PRODUCT_ID in it.products }) throw BillingException(billingResult)
+            else throw BillingException(billingResult, retryable = true)
+        } else if (billingResult.responseCode == BillingResponseCode.ITEM_NOT_OWNED) {
+            Log.w(TAG, "Attempting to replace not owned product")
+            val purchases = queryPurchases()
+            if (purchases.all { PRODUCT_ID !in it.products }) throw BillingException(billingResult)
+            else throw BillingException(billingResult, retryable = true)
+        } else if (!billingResult.isOk) throw BillingException(billingResult)
+
+        subscriptionPurchases.firstOrNull { it != null }?.let { (billingResult, purchases) ->
+            if (!billingResult.isOk) throw BillingException(billingResult)
+            return JSONObject()
+                .put("responseCode", ErrorCode.NoError)
+                .put("purchases", processPurchases(purchases))
+        } ?: throw BillingException("Purchase failed")
+    }
+
+    private fun processPurchases(purchases: List<Purchase>?): JSONArray {
+        val purchaseArray = JSONArray()
+        purchases?.forEach { purchase ->
+            /* val purchaseJson = */ JSONObject().also { purchaseArray.put(it) }
+                .put("purchaseToken", purchase.purchaseToken)
+                .put("purchaseTime", purchase.purchaseTime)
+                .put("purchaseState", purchase.purchaseState)
+                .put("isAcknowledged", purchase.isAcknowledged)
+                .put("isAutoRenewing", purchase.isAutoRenewing)
+                .put("orderId", purchase.orderId)
+                // .put("productIds", JSONArray(purchase.products))
+
+            /* purchase.pendingPurchaseUpdate?.let { purchaseUpdate ->
+                JSONObject()
+                    .put("purchaseToken", purchaseUpdate.purchaseToken)
+                    // .put("productIds", JSONArray(purchaseUpdate.products))
+            }.also { purchaseJson.put("pendingPurchaseUpdate", it) } */
+        }
+        return purchaseArray
+    }
+
+    suspend fun acknowledge(purchaseToken: String): JSONObject {
+        Log.v(TAG, "Acknowledge purchase: $purchaseToken")
+
+        val result = withContext(Dispatchers.IO) {
+            billingClient.acknowledgePurchase(
+                AcknowledgePurchaseParams.newBuilder()
+                    .setPurchaseToken(purchaseToken)
+                    .build()
+            )
+        }
+
+        Log.v(TAG, "Acknowledge purchase result: $result")
+
+        if (result.responseCode == BillingResponseCode.ITEM_NOT_OWNED) {
+            Log.w(TAG, "Attempting to acknowledge not owned product")
+            val purchases = queryPurchases()
+            if (purchases.all { PRODUCT_ID !in it.products }) throw BillingException(result)
+            else throw BillingException(result, retryable = true)
+        } else if (!result.isOk && result.responseCode != BillingResponseCode.ITEM_ALREADY_OWNED) {
+            throw BillingException(result)
+        }
+
+        return JSONObject().put("responseCode", ErrorCode.NoError)
+    }
+
+    suspend fun getPurchases(): JSONObject {
+        Log.v(TAG, "Get purchases")
+        val purchases = queryPurchases()
+        return JSONObject()
+            .put("responseCode", ErrorCode.NoError)
+            .put("purchases", processPurchases(purchases))
+    }
+
+    private suspend fun queryPurchases(): List<Purchase> {
+        Log.v(TAG, "Query purchases")
+        val result = withContext(Dispatchers.IO) {
+            billingClient.queryPurchasesAsync(
+                QueryPurchasesParams.newBuilder().setProductType(ProductType.SUBS).build()
+            )
+        }
+        Log.v(TAG, "Query purchases result: ${result.billingResult}")
+        if (!result.billingResult.isOk) throw BillingException(result.billingResult)
+        return result.purchasesList
+    }
+
+    override fun close() {
+        Log.v(TAG, "Close billing client connection")
+        billingClient.endConnection()
+    }
+
+    companion object {
+        suspend fun withBillingProvider(context: Context, block: suspend BillingProvider.() -> JSONObject): String =
+            BillingProvider(context).use { bp ->
+                bp.handleBillingApiCall {
+                    bp.connect()
+                    bp.block()
+                }.toString()
+            }
+    }
+}
+
+internal val BillingResult.isOk: Boolean
+    get() = responseCode == BillingResponseCode.OK

client/android/build.gradle.kts

@@ -20,6 +20,7 @@ android {
     namespace = "org.amnezia.vpn"
 
     buildFeatures {
+        buildConfig = true
         viewBinding = true
     }
 
@@ -41,17 +42,6 @@ android {
         resourceConfigurations += listOf("en", "ru", "b+zh+Hans")
     }
 
-    sourceSets {
-        getByName("main") {
-            manifest.srcFile("AndroidManifest.xml")
-            java.setSrcDirs(listOf("src"))
-            res.setSrcDirs(listOf("res"))
-            // androyddeployqt creates the folders below
-            assets.setSrcDirs(listOf("assets"))
-            jniLibs.setSrcDirs(listOf("libs"))
-        }
-    }
-
     signingConfigs {
         register("release") {
             storeFile = providers.environmentVariable("ANDROID_KEYSTORE_PATH").orNull?.let { file(it) }
@@ -77,6 +67,36 @@ android {
         }
     }
 
+    flavorDimensions += "billing"
+
+    productFlavors {
+        create("oss") {
+            dimension = "billing"
+        }
+        create("play") {
+            dimension = "billing"
+        }
+    }
+
+    sourceSets {
+        getByName("main") {
+            manifest.srcFile("AndroidManifest.xml")
+            java.setSrcDirs(listOf("src"))
+            res.setSrcDirs(listOf("res"))
+            // androyddeployqt creates the folders below
+            assets.setSrcDirs(listOf("assets"))
+            jniLibs.setSrcDirs(listOf("libs"))
+        }
+
+        getByName("oss") {
+            java.setSrcDirs(listOf("oss"))
+        }
+
+        getByName("play") {
+            java.setSrcDirs(listOf("play"))
+        }
+    }
+
     splits {
         abi {
             isEnable = true
@@ -122,4 +142,9 @@ dependencies {
     implementation(libs.google.mlkit)
     implementation(libs.androidx.datastore)
     implementation(libs.androidx.biometric)
+
+    playImplementation(project(":billing"))
 }
+
+fun DependencyHandler.playImplementation(dependency: Any): Dependency? =
+    add("playImplementation", dependency)

client/android/gradle.properties

@@ -33,7 +33,7 @@ android.library.defaults.buildfeatures.androidresources=false
 # For development copy and set local values for these parameters in local.properties
 #androidCompileSdkVersion=android-34
 #androidBuildToolsVersion=34.0.0
-#qtMinSdkVersion=24
+#qtMinSdkVersion=26
 #qtTargetSdkVersion=34
 #androidNdkVersion=26.1.10909125
 #qtTargetAbiList=x86_64

client/android/gradle/libs.versions.toml

@@ -1,6 +1,7 @@
 [versions]
 agp = "8.5.2"
 kotlin = "1.9.24"
+android-billing = "7.0.0"
 androidx-core = "1.13.1"
 androidx-activity = "1.9.1"
 androidx-annotation = "1.8.2"
@@ -14,6 +15,7 @@ kotlinx-serialization = "1.6.3"
 google-mlkit = "17.3.0"
 
 [libraries]
+android-billing = { module = "com.android.billingclient:billing-ktx", version.ref = "android-billing" }
 androidx-core = { module = "androidx.core:core-ktx", version.ref = "androidx-core" }
 androidx-activity = { module = "androidx.activity:activity-ktx", version.ref = "androidx-activity" }
 androidx-annotation = { module = "androidx.annotation:annotation", version.ref = "androidx-annotation" }

client/android/oss/org/amnezia/vpn/BillingPaymentRepository.kt

@@ -0,0 +1,13 @@
+package org.amnezia.vpn
+
+import android.app.Activity
+import android.content.Context
+
+class BillingPaymentRepository(@Suppress("UNUSED_PARAMETER") context: Context) : BillingRepository {
+    override suspend fun getCountryCode(): String = ""
+    override suspend fun getSubscriptionPlans(): String = ""
+    override suspend fun purchaseSubscription(activity: Activity, offerToken: String): String = ""
+    override suspend fun upgradeSubscription(activity: Activity, offerToken: String, oldPurchaseToken: String): String = ""
+    override suspend fun acknowledge(purchaseToken: String): String = ""
+    override suspend fun queryPurchases(): String = ""
+}

client/android/play/org/amnezia/vpn/BillingPaymentRepository.kt

@@ -0,0 +1,34 @@
+package org.amnezia.vpn
+
+import android.app.Activity
+import android.content.Context
+import BillingProvider.Companion.withBillingProvider
+
+class BillingPaymentRepository(private val context: Context) : BillingRepository {
+
+    override suspend fun getCountryCode(): String = withBillingProvider(context) {
+        getCustomerCountryCode()
+    }
+
+    override suspend fun getSubscriptionPlans(): String = withBillingProvider(context) {
+        getSubscriptionPlans()
+    }
+
+    override suspend fun purchaseSubscription(activity: Activity, offerToken: String): String =
+        withBillingProvider(context) {
+            purchaseSubscription(activity, offerToken)
+    }
+
+    override suspend fun upgradeSubscription(activity: Activity, offerToken: String, oldPurchaseToken: String): String =
+        withBillingProvider(context) {
+            purchaseSubscription(activity, offerToken, oldPurchaseToken)
+        }
+
+    override suspend fun acknowledge(purchaseToken: String): String = withBillingProvider(context) {
+        acknowledge(purchaseToken)
+    }
+
+    override suspend fun queryPurchases(): String = withBillingProvider(context) {
+        getPurchases()
+    }
+}

client/android/protocolApi/src/main/kotlin/Protocol.kt

@@ -1,6 +1,5 @@
 package org.amnezia.vpn.protocol
 
-import android.annotation.SuppressLint
 import android.content.Context
 import android.net.IpPrefix
 import android.net.VpnService
@@ -8,9 +7,6 @@ import android.net.VpnService.Builder
 import android.os.Build
 import android.system.OsConstants
 import androidx.annotation.RequiresApi
-import java.io.File
-import java.io.FileOutputStream
-import java.util.zip.ZipFile
 import kotlinx.coroutines.flow.MutableStateFlow
 import org.amnezia.vpn.util.Log
 import org.amnezia.vpn.util.net.InetNetwork

client/android/settings.gradle.kts

@@ -31,6 +31,7 @@ rootProject.buildFileName = "build.gradle.kts"
 
 include(":qt")
 include(":utils")
+include(":billing")
 include(":protocolApi")
 include(":wireguard")
 include(":awg")

client/android/src/org/amnezia/vpn/AmneziaActivity.kt

@@ -21,6 +21,7 @@ import android.os.Looper
 import android.os.Message
 import android.os.Messenger
 import android.provider.Settings
+import android.view.MotionEvent
 import android.view.WindowManager.LayoutParams
 import android.webkit.MimeTypeMap
 import android.widget.Toast
@@ -29,6 +30,7 @@ import androidx.annotation.RequiresApi
 import androidx.core.content.ContextCompat
 import java.io.IOException
 import kotlin.LazyThreadSafetyMode.NONE
+import kotlin.coroutines.CoroutineContext
 import kotlin.text.RegexOption.IGNORE_CASE
 import AppListProvider
 import kotlinx.coroutines.CompletableDeferred
@@ -39,7 +41,6 @@ import kotlinx.coroutines.async
 import kotlinx.coroutines.cancel
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.runBlocking
-import kotlinx.coroutines.withContext
 import org.amnezia.vpn.protocol.getStatistics
 import org.amnezia.vpn.protocol.getStatus
 import org.amnezia.vpn.qt.QtAndroidController
@@ -70,6 +71,7 @@ class AmneziaActivity : QtActivity() {
     private var isInBoundState = false
     private var notificationStateReceiver: BroadcastReceiver? = null
     private lateinit var vpnServiceMessenger: IpcMessenger
+    private lateinit var billingRepository: BillingRepository
 
     private val actionResultHandlers = mutableMapOf<Int, ActivityResultHandler>()
     private val permissionRequestHandlers = mutableMapOf<Int, PermissionRequestHandler>()
@@ -158,7 +160,7 @@ class AmneziaActivity : QtActivity() {
      */
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        Log.d(TAG, "Create Amnezia activity: $intent")
+        Log.d(TAG, "Create Amnezia activity")
         loadLibs()
         window.apply {
             addFlags(LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
@@ -179,6 +181,7 @@ class AmneziaActivity : QtActivity() {
         registerBroadcastReceivers()
         intent?.let(::processIntent)
         runBlocking { vpnProto = proto.await() }
+        billingRepository = BillingPaymentRepository(applicationContext)
     }
 
     private fun loadLibs() {
@@ -200,7 +203,7 @@ class AmneziaActivity : QtActivity() {
                     NotificationManager.ACTION_APP_BLOCK_STATE_CHANGED
                 )
             ) {
-                Log.d(
+                Log.v(
                     TAG, "Notification state changed: ${it?.action}, blocked = " +
                         "${it?.getBooleanExtra(NotificationManager.EXTRA_BLOCKED_STATE, false)}"
                 )
@@ -214,7 +217,7 @@ class AmneziaActivity : QtActivity() {
 
     override fun onNewIntent(intent: Intent?) {
         super.onNewIntent(intent)
-        Log.d(TAG, "onNewIntent: $intent")
+        Log.v(TAG, "onNewIntent: $intent")
         intent?.let(::processIntent)
     }
 
@@ -403,7 +406,7 @@ class AmneziaActivity : QtActivity() {
     @MainThread
     private fun startVpn(vpnConfig: String) {
         getVpnProto(vpnConfig)?.let { proto ->
-            Log.d(TAG, "Proto from config: $proto, current proto: $vpnProto")
+            Log.v(TAG, "Proto from config: $proto, current proto: $vpnProto")
             if (isServiceConnected) {
                 if (proto.serviceClass == vpnProto?.serviceClass) {
                     vpnProto = proto
@@ -516,7 +519,7 @@ class AmneziaActivity : QtActivity() {
                 startActivityForResult(it, CREATE_FILE_ACTION_CODE, ActivityResultHandler(
                     onSuccess = {
                         it?.data?.let { uri ->
-                            Log.d(TAG, "Save file to $uri")
+                            Log.v(TAG, "Save file to $uri")
                             try {
                                 contentResolver.openOutputStream(uri)?.use { os ->
                                     os.bufferedWriter().use { it.write(data) }
@@ -565,7 +568,7 @@ class AmneziaActivity : QtActivity() {
                 startActivityForResult(it, OPEN_FILE_ACTION_CODE, ActivityResultHandler(
                     onAny = {
                         val uri = it?.data?.toString() ?: ""
-                        Log.d(TAG, "Open file: $uri")
+                        Log.v(TAG, "Open file: $uri")
                         mainScope.launch {
                             qtInitialized.await()
                             QtAndroidController.onFileOpened(uri)
@@ -646,15 +649,9 @@ class AmneziaActivity : QtActivity() {
     @Suppress("unused")
     fun getAppList(): String {
         Log.v(TAG, "Get app list")
-        var appList = ""
-        runBlocking {
-            mainScope.launch {
-                withContext(Dispatchers.IO) {
-                    appList = AppListProvider.getAppList(packageManager, packageName)
-                }
-            }.join()
+        return blockingCall(Dispatchers.IO) {
+            AppListProvider.getAppList(packageManager, packageName)
         }
-        return appList
     }
 
     @Suppress("unused")
@@ -720,9 +717,117 @@ class AmneziaActivity : QtActivity() {
         }
     }
 
+    @Suppress("unused")
+    fun isPlay(): Boolean = BuildConfig.FLAVOR == "play"
+
+    @Suppress("unused")
+    fun getCountryCode(): String {
+        Log.v(TAG, "Get country code")
+        return blockingCall { billingRepository.getCountryCode() }
+    }
+
+    @Suppress("unused")
+    fun getSubscriptionPlans(): String {
+        Log.v(TAG, "Get subscription plans")
+        return blockingCall { billingRepository.getSubscriptionPlans() }
+    }
+
+    @Suppress("unused")
+    fun purchaseSubscription(offerToken: String): String {
+        Log.v(TAG, "Purchase subscription")
+        return blockingCall { billingRepository.purchaseSubscription(this@AmneziaActivity, offerToken) }
+    }
+
+    @Suppress("unused")
+    fun upgradeSubscription(offerToken: String, oldPurchaseToken: String): String {
+        Log.v(TAG, "Upgrade subscription")
+        return blockingCall {
+            billingRepository.upgradeSubscription(this@AmneziaActivity, offerToken, oldPurchaseToken)
+        }
+    }
+
+    @Suppress("unused")
+    fun acknowledgePurchase(purchaseToken: String): String {
+        Log.v(TAG, "Acknowledge purchase")
+        return blockingCall { billingRepository.acknowledge(purchaseToken) }
+    }
+
+    @Suppress("unused")
+    fun queryPurchases(): String {
+        Log.v(TAG, "Query purchases")
+        return blockingCall { billingRepository.queryPurchases() }
+    }
+
+    // workaround for a bug in Qt that causes the mouse click event not to be handled
+    // also disable right-click, as it causes the application to crash
+    private var lastButtonState = 0
+    private fun MotionEvent.fixCopy(): MotionEvent = MotionEvent.obtain(
+        downTime,
+        eventTime,
+        action,
+        pointerCount,
+        (0 until pointerCount).map { i ->
+            MotionEvent.PointerProperties().apply {
+                getPointerProperties(i, this)
+            }
+        }.toTypedArray(),
+        (0 until pointerCount).map { i ->
+            MotionEvent.PointerCoords().apply {
+                getPointerCoords(i, this)
+            }
+        }.toTypedArray(),
+        metaState,
+        MotionEvent.BUTTON_PRIMARY,
+        xPrecision,
+        yPrecision,
+        deviceId,
+        edgeFlags,
+        source,
+        flags
+    )
+
+    private fun handleMouseEvent(ev: MotionEvent, superDispatch: (MotionEvent?) -> Boolean): Boolean {
+        when (ev.action) {
+            MotionEvent.ACTION_DOWN -> {
+                lastButtonState = ev.buttonState
+                if (ev.buttonState == MotionEvent.BUTTON_SECONDARY) return true
+            }
+
+            MotionEvent.ACTION_UP -> {
+                when (lastButtonState) {
+                    MotionEvent.BUTTON_SECONDARY -> return true
+                    MotionEvent.BUTTON_PRIMARY -> {
+                        val modEvent = ev.fixCopy()
+                        return superDispatch(modEvent).apply { modEvent.recycle() }
+                    }
+                }
+            }
+        }
+        return superDispatch(ev)
+    }
+
+    override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {
+        if (ev != null && ev.getToolType(0) == MotionEvent.TOOL_TYPE_MOUSE) {
+            return handleMouseEvent(ev) { super.dispatchTouchEvent(it) }
+        }
+        return super.dispatchTouchEvent(ev)
+    }
+
+    override fun dispatchTrackballEvent(ev: MotionEvent?): Boolean {
+        ev?.let { return handleMouseEvent(ev) { super.dispatchTrackballEvent(it) }}
+        return super.dispatchTrackballEvent(ev)
+    }
+
     /**
      * Utils methods
      */
+    private fun <T> blockingCall(
+        context: CoroutineContext = Dispatchers.Default,
+        block: suspend () -> T
+    ) = runBlocking {
+        mainScope.async(context) { block() }.await()
+    }
+
     companion object {
         private fun actionCodeToString(actionCode: Int): String =
             when (actionCode) {

client/android/src/org/amnezia/vpn/AmneziaApplication.kt

@@ -1,5 +1,6 @@
 package org.amnezia.vpn
 
+import android.system.Os
 import androidx.camera.camera2.Camera2Config
 import androidx.camera.core.CameraSelector
 import androidx.camera.core.CameraXConfig
@@ -12,6 +13,9 @@ private const val TAG = "AmneziaApplication"
 class AmneziaApplication : QtApplication(), CameraXConfig.Provider {
 
     override fun onCreate() {
+        if (BuildConfig.DEBUG) {
+            Os.setenv("QT_ANDROID_DEBUGGER_MAIN_THREAD_SLEEP_MS", "0", true)
+        }
         super.onCreate()
         Prefs.init(this)
         Log.init(this)

client/android/src/org/amnezia/vpn/AmneziaVpnService.kt

@@ -300,7 +300,7 @@ open class AmneziaVpnService : VpnService() {
             arrayOf(ACTION_CONNECT, ACTION_DISCONNECT), ContextCompat.RECEIVER_NOT_EXPORTED
         ) {
             it?.action?.let { action ->
-                Log.d(TAG, "Broadcast request received: $action")
+                Log.v(TAG, "Broadcast request received: $action")
                 when (action) {
                     ACTION_CONNECT -> connect()
                     ACTION_DISCONNECT -> disconnect()
@@ -317,7 +317,7 @@ open class AmneziaVpnService : VpnService() {
                 )
             ) {
                 val state = it?.getBooleanExtra(NotificationManager.EXTRA_BLOCKED_STATE, false)
-                Log.d(TAG, "Notification state changed: ${it?.action}, blocked = $state")
+                Log.v(TAG, "Notification state changed: ${it?.action}, blocked = $state")
                 if (state == false) {
                     enableNotification()
                 } else {
@@ -450,7 +450,7 @@ open class AmneziaVpnService : VpnService() {
             serviceNotification.isNotificationEnabled() &&
             getSystemService<PowerManager>()?.isInteractive != false
         ) {
-            Log.d(TAG, "Launch traffic stats update")
+            Log.v(TAG, "Launch traffic stats update")
             trafficStats.reset()
             startTrafficStatsUpdateJob()
         }

client/android/src/org/amnezia/vpn/AuthActivity.kt

@@ -66,7 +66,7 @@ class AuthActivity : FragmentActivity() {
             object : BiometricPrompt.AuthenticationCallback() {
                 override fun onAuthenticationSucceeded(result: AuthenticationResult) {
                     super.onAuthenticationSucceeded(result)
-                    Log.d(TAG, "Authentication succeeded")
+                    Log.v(TAG, "Authentication succeeded")
                     QtAndroidController.onAuthResult(true)
                     finish()
                 }

client/android/src/org/amnezia/vpn/BillingRepository.kt

@@ -0,0 +1,12 @@
+package org.amnezia.vpn
+
+import android.app.Activity
+
+interface BillingRepository {
+    suspend fun getCountryCode(): String
+    suspend fun getSubscriptionPlans(): String
+    suspend fun purchaseSubscription(activity: Activity, offerToken: String): String
+    suspend fun upgradeSubscription(activity: Activity, offerToken: String, oldPurchaseToken: String): String
+    suspend fun acknowledge(purchaseToken: String): String
+    suspend fun queryPurchases(): String
+}

client/android/src/org/amnezia/vpn/ImportConfigActivity.kt

@@ -29,20 +29,20 @@ class ImportConfigActivity : ComponentActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        Log.d(TAG, "Create Import Config Activity: $intent")
+        Log.v(TAG, "Create Import Config Activity: $intent")
         intent?.let(::readConfig)
     }
 
     override fun onNewIntent(intent: Intent) {
         super.onNewIntent(intent)
-        Log.d(TAG, "onNewIntent: $intent")
+        Log.v(TAG, "onNewIntent: $intent")
         intent.let(::readConfig)
     }
 
     private fun readConfig(intent: Intent) {
         when (intent.action) {
             ACTION_SEND -> {
-                Log.d(TAG, "Process SEND action, type: ${intent.type}")
+                Log.v(TAG, "Process SEND action, type: ${intent.type}")
                 when (intent.type) {
                     "application/octet-stream" -> {
                         intent.getUriCompat()?.let { uri ->
@@ -60,7 +60,7 @@ class ImportConfigActivity : ComponentActivity() {
             }
 
             ACTION_VIEW -> {
-                Log.d(TAG, "Process VIEW action, scheme: ${intent.scheme}")
+                Log.v(TAG, "Process VIEW action, scheme: ${intent.scheme}")
                 when (intent.scheme) {
                     "file", "content" -> {
                         intent.data?.let { uri ->

client/android/src/org/amnezia/vpn/ServiceNotification.kt

@@ -62,7 +62,7 @@ class ServiceNotification(private val context: Context) {
     fun buildNotification(serverName: String?, protocol: String?, state: ProtocolState): Notification {
         val speedString = if (state == CONNECTED) zeroSpeed else null
 
-        Log.d(TAG, "Build notification: $serverName, $state")
+        Log.v(TAG, "Build notification: $serverName, $state")
 
         return notificationBuilder
             .setSmallIcon(R.drawable.ic_amnezia_round)
@@ -88,17 +88,15 @@ class ServiceNotification(private val context: Context) {
     fun isNotificationEnabled(): Boolean {
         if (!context.isNotificationPermissionGranted()) return false
         if (!notificationManager.areNotificationsEnabled()) return false
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            return notificationManager.getNotificationChannel(NOTIFICATION_CHANNEL_ID)
-                ?.let { it.importance != NotificationManager.IMPORTANCE_NONE } ?: true
-        }
-        return true
+        return notificationManager.getNotificationChannel(NOTIFICATION_CHANNEL_ID)?.let {
+            it.importance != NotificationManager.IMPORTANCE_NONE
+        } ?: true
     }
 
     @SuppressLint("MissingPermission")
     fun updateNotification(serverName: String?, protocol: String?, state: ProtocolState) {
         if (context.isNotificationPermissionGranted()) {
-            Log.d(TAG, "Update notification: $serverName, $state")
+            Log.v(TAG, "Update notification: $serverName, $state")
             notificationManager.notify(NOTIFICATION_ID, buildNotification(serverName, protocol, state))
         }
     }

client/android/utils/src/main/kotlin/ErrorCode.kt

@@ -0,0 +1,14 @@
+package org.amnezia.vpn.util
+
+// keep synchronized with client/core/defs.h error_code_ns::ErrorCode
+object ErrorCode {
+    const val NoError = 0
+
+    const val BillingCanceled = 1300
+    const val BillingError = 1301
+    const val BillingGooglePlayError = 1302
+    const val BillingUnavailable = 1303
+    const val SubscriptionAlreadyOwned = 1304
+    const val SubscriptionUnavailable = 1305
+    const val BillingNetworkError = 1306
+}

client/android/utils/src/main/kotlin/LibraryLoader.kt

@@ -46,7 +46,7 @@ object LibraryLoader {
             System.loadLibrary(libraryName)
             return
         } catch (_: UnsatisfiedLinkError) {
-            Log.d(TAG, "Failed to load library, try to extract it from apk")
+            Log.w(TAG, "Failed to load library, try to extract it from apk")
         }
         var tempFile: File? = null
         try {

client/android/utils/src/main/kotlin/Log.kt

@@ -1,8 +1,6 @@
 package org.amnezia.vpn.util
 
 import android.content.Context
-import android.icu.text.DateFormat
-import android.icu.text.SimpleDateFormat
 import android.os.Build
 import android.os.Process
 import java.io.File
@@ -12,8 +10,6 @@ import java.nio.channels.FileChannel
 import java.nio.channels.FileLock
 import java.time.LocalDateTime
 import java.time.format.DateTimeFormatter
-import java.util.Date
-import java.util.Locale
 import java.util.concurrent.locks.ReentrantLock
 import org.amnezia.vpn.util.Log.Priority.D
 import org.amnezia.vpn.util.Log.Priority.E
@@ -41,11 +37,7 @@ private const val LOG_MAX_FILE_SIZE = 1024 * 1024
  * |                   |              | create a report and/or terminate the process |
  */
 object Log {
-    private val dateTimeFormat: Any =
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) DateTimeFormatter.ofPattern(DATE_TIME_PATTERN)
-        else object : ThreadLocal<DateFormat>() {
-            override fun initialValue(): DateFormat = SimpleDateFormat(DATE_TIME_PATTERN, Locale.US)
-        }
+    private val dateTimeFormat: DateTimeFormatter = DateTimeFormatter.ofPattern(DATE_TIME_PATTERN)
 
     private lateinit var logDir: File
     private val logFile: File by lazy { File(logDir, LOG_FILE_NAME) }
@@ -143,12 +135,7 @@ object Log {
     }
 
     private fun formatLogMsg(tag: String, msg: String, priority: Priority): String {
-        val date = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            LocalDateTime.now().format(dateTimeFormat as DateTimeFormatter)
-        } else {
-            @Suppress("UNCHECKED_CAST")
-            (dateTimeFormat as ThreadLocal<DateFormat>).get()?.format(Date())
-        }
+        val date = LocalDateTime.now().format(dateTimeFormat)
         return "$date ${Process.myPid()} ${Process.myTid()} $priority [${Thread.currentThread().name}] " +
             "$tag: $msg\n"
     }

client/android/utils/src/main/kotlin/net/NetworkState.kt

@@ -42,18 +42,12 @@ class NetworkState(
     private val networkCallback: NetworkCallback by lazy(NONE) {
         object : NetworkCallback() {
             override fun onAvailable(network: Network) {
-                Log.d(TAG, "onAvailable: $network")
+                Log.v(TAG, "onAvailable: $network")
             }
 
             override fun onCapabilitiesChanged(network: Network, networkCapabilities: NetworkCapabilities) {
-                Log.d(TAG, "onCapabilitiesChanged: $network, $networkCapabilities")
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-                    checkNetworkState(network, networkCapabilities)
-                } else {
-                    handler.post {
-                        checkNetworkState(network, networkCapabilities)
-                    }
-                }
+                Log.v(TAG, "onCapabilitiesChanged: $network, $networkCapabilities")
+                checkNetworkState(network, networkCapabilities)
             }
 
             private fun checkNetworkState(network: Network, networkCapabilities: NetworkCapabilities) {
@@ -73,11 +67,11 @@ class NetworkState(
             }
 
             override fun onBlockedStatusChanged(network: Network, blocked: Boolean) {
-                Log.d(TAG, "onBlockedStatusChanged: $network, $blocked")
+                Log.v(TAG, "onBlockedStatusChanged: $network, $blocked")
             }
 
             override fun onLost(network: Network) {
-                Log.d(TAG, "onLost: $network")
+                Log.v(TAG, "onLost: $network")
             }
         }
     }
@@ -87,7 +81,7 @@ class NetworkState(
         Log.d(TAG, "Bind network listener")
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
             connectivityManager.registerBestMatchingNetworkCallback(networkRequest, networkCallback, handler)
-        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+        } else {
             val numberAttempts = 300
             var attemptCount = 0
             while(true) {
@@ -108,8 +102,6 @@ class NetworkState(
                     }
                 }
             }
-        } else {
-            connectivityManager.requestNetwork(networkRequest, networkCallback)
         }
         isListenerBound = true
     }

client/android/wireguard/src/main/kotlin/org/amnezia/vpn/protocol/wireguard/Wireguard.kt

@@ -66,7 +66,7 @@ open class Wireguard : Protocol() {
             try {
                 delay(1000)
                 var log = getLogcat(time)
-                Log.d(TAG, "First waiting log: $log")
+                Log.v(TAG, "First waiting log: $log")
                 // check that there is a connection log,
                 // to avoid infinite connection
                 if (!log.contains("Attaching to interface")) {

client/android/xray/src/main/kotlin/Xray.kt

@@ -130,8 +130,8 @@ class Xray : Protocol() {
             LibXray.initXray(assetsPath)
             val geoDir = File(assetsPath, "geo").absolutePath
             val configPath = File(context.cacheDir, "config.json")
-            Log.d(TAG, "xray.location.asset: $geoDir")
-            Log.d(TAG, "config: $configPath")
+            Log.v(TAG, "xray.location.asset: $geoDir")
+            Log.v(TAG, "config: $configPath")
             try {
                 configPath.writeText(configJson)
             } catch (e: IOException) {

client/cmake/android.cmake

@@ -1,6 +1,6 @@
 message("Client android ${CMAKE_ANDROID_ARCH_ABI} build")
 
-set(APP_ANDROID_MIN_SDK 24)
+set(APP_ANDROID_MIN_SDK 26)
 set(ANDROID_PLATFORM "android-${APP_ANDROID_MIN_SDK}" CACHE STRING
     "The minimum API level supported by the application or library" FORCE)
 

client/core/controllers/apiController.cpp

@@ -1,5 +1,8 @@
 #include "apiController.h"
 
+#include <algorithm>
+#include <random>
+
 #include <QEventLoop>
 #include <QNetworkAccessManager>
 #include <QNetworkReply>
@@ -11,6 +14,7 @@
 #include "amnezia_application.h"
 #include "configurators/wireguard_configurator.h"
 #include "core/enums/apiEnums.h"
+#include "utilities.h"
 #include "version.h"
 
 namespace
@@ -33,6 +37,7 @@ namespace
         constexpr char userCountryCode[] = "user_country_code";
         constexpr char serverCountryCode[] = "server_country_code";
         constexpr char serviceType[] = "service_type";
+        constexpr char serviceInfo[] = "service_info";
 
         constexpr char aesKey[] = "aes_key";
         constexpr char aesIv[] = "aes_iv";
@@ -40,9 +45,10 @@ namespace
 
         constexpr char apiPayload[] = "api_payload";
         constexpr char keyPayload[] = "key_payload";
-    }
 
-    const QStringList proxyStorageUrl = { "" };
+        constexpr char apiConfig[] = "api_config";
+        constexpr char authData[] = "auth_data";
+    }
 
     ErrorCode checkErrors(const QList<QSslError> &sslErrors, QNetworkReply *reply)
     {
@@ -63,6 +69,28 @@ namespace
             return ErrorCode::ApiConfigDownloadError;
         }
     }
+
+    bool shouldBypassProxy(QNetworkReply *reply, const QByteArray &responseBody, bool checkEncryption, const QByteArray &key = "",
+                           const QByteArray &iv = "", const QByteArray &salt = "")
+    {
+        if (reply->error() == QNetworkReply::NetworkError::OperationCanceledError
+            || reply->error() == QNetworkReply::NetworkError::TimeoutError) {
+            qDebug() << "Timeout occurred";
+            return true;
+        } else if (responseBody.contains("html")) {
+            qDebug() << "The response contains an html tag";
+            return true;
+        } else if (checkEncryption) {
+            try {
+                QSimpleCrypto::QBlockCipher blockCipher;
+                static_cast<void>(blockCipher.decryptAesBlockCipher(responseBody, key, iv, "", salt));
+            } catch (...) {
+                qDebug() << "Failed to decrypt the data";
+                return true;
+            }
+        }
+        return false;
+    }
 }
 
 ApiController::ApiController(const QString &gatewayEndpoint, bool isDevEnvironment, QObject *parent)
@@ -94,8 +122,8 @@ void ApiController::fillServerConfig(const QString &protocol, const ApiControlle
         configStr.replace("$OPENVPN_PRIV_KEY", apiPayloadData.certRequest.privKey);
     } else if (protocol == configKey::awg) {
         configStr.replace("$WIREGUARD_CLIENT_PRIVATE_KEY", apiPayloadData.wireGuardClientPrivKey);
-        auto serverConfig = QJsonDocument::fromJson(configStr.toUtf8()).object();
-        auto containers = serverConfig.value(config_key::containers).toArray();
+        auto newServerConfig = QJsonDocument::fromJson(configStr.toUtf8()).object();
+        auto containers = newServerConfig.value(config_key::containers).toArray();
         if (containers.isEmpty()) {
             return; // todo process error
         }
@@ -114,25 +142,35 @@ void ApiController::fillServerConfig(const QString &protocol, const ApiControlle
         containerConfig[config_key::transportPacketMagicHeader] = protocolConfig.value(config_key::transportPacketMagicHeader);
         container[containerName] = containerConfig;
         containers.replace(0, container);
-        serverConfig[config_key::containers] = containers;
-        configStr = QString(QJsonDocument(serverConfig).toJson());
+        newServerConfig[config_key::containers] = containers;
+        configStr = QString(QJsonDocument(newServerConfig).toJson());
     }
 
-    QJsonObject apiConfig = QJsonDocument::fromJson(configStr.toUtf8()).object();
-    serverConfig[config_key::dns1] = apiConfig.value(config_key::dns1);
-    serverConfig[config_key::dns2] = apiConfig.value(config_key::dns2);
-    serverConfig[config_key::containers] = apiConfig.value(config_key::containers);
-    serverConfig[config_key::hostName] = apiConfig.value(config_key::hostName);
+    QJsonObject newServerConfig = QJsonDocument::fromJson(configStr.toUtf8()).object();
+    serverConfig[config_key::dns1] = newServerConfig.value(config_key::dns1);
+    serverConfig[config_key::dns2] = newServerConfig.value(config_key::dns2);
+    serverConfig[config_key::containers] = newServerConfig.value(config_key::containers);
+    serverConfig[config_key::hostName] = newServerConfig.value(config_key::hostName);
 
-    if (apiConfig.value(config_key::configVersion).toInt() == ApiConfigSources::AmneziaGateway) {
-        serverConfig[config_key::configVersion] = apiConfig.value(config_key::configVersion);
-        serverConfig[config_key::description] = apiConfig.value(config_key::description);
-        serverConfig[config_key::name] = apiConfig.value(config_key::name);
+    if (newServerConfig.value(config_key::configVersion).toInt() == ApiConfigSources::AmneziaGateway) {
+        serverConfig[config_key::configVersion] = newServerConfig.value(config_key::configVersion);
+        serverConfig[config_key::description] = newServerConfig.value(config_key::description);
+        serverConfig[config_key::name] = newServerConfig.value(config_key::name);
     }
 
-    auto defaultContainer = apiConfig.value(config_key::defaultContainer).toString();
+    auto defaultContainer = newServerConfig.value(config_key::defaultContainer).toString();
     serverConfig[config_key::defaultContainer] = defaultContainer;
 
+    QVariantMap map = serverConfig.value(configKey::apiConfig).toObject().toVariantMap();
+    map.insert(newServerConfig.value(configKey::apiConfig).toObject().toVariantMap());
+    auto apiConfig = QJsonObject::fromVariantMap(map);
+
+    if (newServerConfig.value(config_key::configVersion).toInt() == ApiConfigSources::AmneziaGateway) {
+        apiConfig.insert(configKey::serviceInfo, QJsonDocument::fromJson(apiResponseBody).object().value(configKey::serviceInfo).toObject());
+    }
+
+    serverConfig[configKey::apiConfig] = apiConfig;
+
     return;
 }
 
@@ -146,6 +184,15 @@ QStringList ApiController::getProxyUrls()
     QList<QSslError> sslErrors;
     QNetworkReply *reply;
 
+    QStringList proxyStorageUrl;
+    if (m_isDevEnvironment) {
+        proxyStorageUrl = QStringList { DEV_S3_ENDPOINT };
+    } else {
+        proxyStorageUrl = QStringList { PROD_S3_ENDPOINT };
+    }
+
+    QByteArray key = m_isDevEnvironment ? DEV_AGW_PUBLIC_KEY : PROD_AGW_PUBLIC_KEY;
+
     for (const auto &proxyStorageUrl : proxyStorageUrl) {
         request.setUrl(proxyStorageUrl);
         reply = amnApp->manager()->get(request);
@@ -166,11 +213,23 @@ QStringList ApiController::getProxyUrls()
     EVP_PKEY *privateKey = nullptr;
     QByteArray responseBody;
     try {
-        QByteArray key = PROD_PROXY_STORAGE_KEY;
-        QSimpleCrypto::QRsa rsa;
-        privateKey = rsa.getPrivateKeyFromByteArray(key, "");
-        responseBody = rsa.decrypt(encryptedResponseBody, privateKey, RSA_PKCS1_PADDING);
+        if (!m_isDevEnvironment) {
+            QCryptographicHash hash(QCryptographicHash::Sha512);
+            hash.addData(key);
+            QByteArray hashResult = hash.result().toHex();
+
+            QByteArray key = QByteArray::fromHex(hashResult.left(64));
+            QByteArray iv = QByteArray::fromHex(hashResult.mid(64, 32));
+
+            QByteArray ba = QByteArray::fromBase64(encryptedResponseBody);
+
+            QSimpleCrypto::QBlockCipher blockCipher;
+            responseBody = blockCipher.decryptAesBlockCipher(ba, key, iv);
+        } else {
+            responseBody = encryptedResponseBody;
+        }
     } catch (...) {
+        Utils::logException();
         qCritical() << "error loading private key from environment variables or decrypting payload";
         return {};
     }
@@ -292,38 +351,44 @@ ErrorCode ApiController::getServicesList(QByteArray &responseBody)
     connect(reply, &QNetworkReply::sslErrors, [this, &sslErrors](const QList<QSslError> &errors) { sslErrors = errors; });
     wait.exec();
 
-    if (reply->error() == QNetworkReply::NetworkError::TimeoutError || reply->error() == QNetworkReply::NetworkError::OperationCanceledError) {
+    responseBody = reply->readAll();
+
+    if (sslErrors.isEmpty() && shouldBypassProxy(reply, responseBody, false)) {
         m_proxyUrls = getProxyUrls();
+        std::random_device randomDevice;
+        std::mt19937 generator(randomDevice());
+        std::shuffle(m_proxyUrls.begin(), m_proxyUrls.end(), generator);
         for (const QString &proxyUrl : m_proxyUrls) {
+            qDebug() << "Go to the next endpoint";
             request.setUrl(QString("%1v1/services").arg(proxyUrl));
+            reply->deleteLater(); // delete the previous reply
             reply = amnApp->manager()->get(request);
 
             QObject::connect(reply, &QNetworkReply::finished, &wait, &QEventLoop::quit);
             connect(reply, &QNetworkReply::sslErrors, [this, &sslErrors](const QList<QSslError> &errors) { sslErrors = errors; });
             wait.exec();
-            if (reply->error() != QNetworkReply::NetworkError::TimeoutError
-                && reply->error() != QNetworkReply::NetworkError::OperationCanceledError) {
+
+            responseBody = reply->readAll();
+            if (!sslErrors.isEmpty() || !shouldBypassProxy(reply, responseBody, false)) {
                 break;
             }
-            reply->deleteLater();
         }
     }
 
-    responseBody = reply->readAll();
     auto errorCode = checkErrors(sslErrors, reply);
     reply->deleteLater();
     return errorCode;
 }
 
 ErrorCode ApiController::getConfigForService(const QString &installationUuid, const QString &userCountryCode, const QString &serviceType,
-                                             const QString &protocol, const QString &serverCountryCode, QJsonObject &serverConfig)
+                                             const QString &protocol, const QString &serverCountryCode, const QJsonObject &authData,
+                                             QJsonObject &serverConfig)
 {
 #ifdef Q_OS_IOS
     IosController::Instance()->requestInetAccess();
     QThread::msleep(10);
 #endif
 
-    QNetworkAccessManager manager;
     QNetworkRequest request;
     request.setTransferTimeout(7000);
     request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
@@ -339,6 +404,9 @@ ErrorCode ApiController::getConfigForService(const QString &installationUuid, co
     }
     apiPayload[configKey::serviceType] = serviceType;
     apiPayload[configKey::uuid] = installationUuid;
+    if (!authData.isEmpty()) {
+        apiPayload[configKey::authData] = authData;
+    }
 
     QSimpleCrypto::QBlockCipher blockCipher;
     QByteArray key = blockCipher.generatePrivateSalt(32);
@@ -361,6 +429,7 @@ ErrorCode ApiController::getConfigForService(const QString &installationUuid, co
             QSimpleCrypto::QRsa rsa;
             publicKey = rsa.getPublicKeyFromByteArray(rsaKey);
         } catch (...) {
+            Utils::logException();
             qCritical() << "error loading public key from environment variables";
             return ErrorCode::ApiMissingAgwPublicKey;
         }
@@ -370,14 +439,16 @@ ErrorCode ApiController::getConfigForService(const QString &installationUuid, co
 
         encryptedApiPayload = blockCipher.encryptAesBlockCipher(QJsonDocument(apiPayload).toJson(), key, iv, "", salt);
     } catch (...) { // todo change error handling in QSimpleCrypto?
+        Utils::logException();
         qCritical() << "error when encrypting the request body";
+        return ErrorCode::ApiConfigDecryptionError;
     }
 
     QJsonObject requestBody;
     requestBody[configKey::keyPayload] = QString(encryptedKeyPayload.toBase64());
     requestBody[configKey::apiPayload] = QString(encryptedApiPayload.toBase64());
 
-    QNetworkReply *reply = manager.post(request, QJsonDocument(requestBody).toJson());
+    QNetworkReply *reply = amnApp->manager()->post(request, QJsonDocument(requestBody).toJson());
 
     QEventLoop wait;
     connect(reply, &QNetworkReply::finished, &wait, &QEventLoop::quit);
@@ -386,37 +457,43 @@ ErrorCode ApiController::getConfigForService(const QString &installationUuid, co
     connect(reply, &QNetworkReply::sslErrors, [this, &sslErrors](const QList<QSslError> &errors) { sslErrors = errors; });
     wait.exec();
 
-    if (reply->error() == QNetworkReply::NetworkError::TimeoutError || reply->error() == QNetworkReply::NetworkError::OperationCanceledError) {
-        if (m_proxyUrls.isEmpty()) {
-            m_proxyUrls = getProxyUrls();
-        }
+    auto encryptedResponseBody = reply->readAll();
+
+    if (sslErrors.isEmpty() && shouldBypassProxy(reply, encryptedResponseBody, true, key, iv, salt)) {
+        m_proxyUrls = getProxyUrls();
+        std::random_device randomDevice;
+        std::mt19937 generator(randomDevice());
+        std::shuffle(m_proxyUrls.begin(), m_proxyUrls.end(), generator);
         for (const QString &proxyUrl : m_proxyUrls) {
+            qDebug() << "Go to the next endpoint";
             request.setUrl(QString("%1v1/config").arg(proxyUrl));
-            reply = manager.post(request, QJsonDocument(requestBody).toJson());
+            reply->deleteLater(); // delete the previous reply
+            reply = amnApp->manager()->post(request, QJsonDocument(requestBody).toJson());
 
             QObject::connect(reply, &QNetworkReply::finished, &wait, &QEventLoop::quit);
             connect(reply, &QNetworkReply::sslErrors, [this, &sslErrors](const QList<QSslError> &errors) { sslErrors = errors; });
             wait.exec();
-            if (reply->error() != QNetworkReply::NetworkError::TimeoutError
-                && reply->error() != QNetworkReply::NetworkError::OperationCanceledError) {
+
+            encryptedResponseBody = reply->readAll();
+            if (!sslErrors.isEmpty() || !shouldBypassProxy(reply, encryptedResponseBody, true, key, iv, salt)) {
                 break;
             }
-            reply->deleteLater();
         }
     }
 
     auto errorCode = checkErrors(sslErrors, reply);
+    reply->deleteLater();
     if (errorCode) {
         return errorCode;
     }
 
-    auto encryptedResponseBody = reply->readAll();
-    reply->deleteLater();
     try {
         auto responseBody = blockCipher.decryptAesBlockCipher(encryptedResponseBody, key, iv, "", salt);
         fillServerConfig(protocol, apiPayloadData, responseBody, serverConfig);
     } catch (...) { // todo change error handling in QSimpleCrypto?
+        Utils::logException();
         qCritical() << "error when decrypting the request body";
+        return ErrorCode::ApiConfigDecryptionError;
     }
 
     return errorCode;

client/core/controllers/apiController.h

@@ -21,7 +21,7 @@ public slots:
 
     ErrorCode getServicesList(QByteArray &responseBody);
     ErrorCode getConfigForService(const QString &installationUuid, const QString &userCountryCode, const QString &serviceType,
-                                  const QString &protocol, const QString &serverCountryCode, QJsonObject &serverConfig);
+                                  const QString &protocol, const QString &serverCountryCode, const QJsonObject &authData, QJsonObject &serverConfig);
 
 signals:
     void errorOccurred(ErrorCode errorCode);

client/core/defs.h

@@ -96,6 +96,7 @@ namespace amnezia
 
         // import and install errors
         ImportInvalidConfigError = 900,
+        ImportOpenConfigError = 901,
 
         // Android errors
         AndroidError = 1000,
@@ -107,6 +108,7 @@ namespace amnezia
         ApiConfigTimeoutError = 1103,
         ApiConfigSslError = 1104,
         ApiMissingAgwPublicKey = 1105,
+        ApiConfigDecryptionError = 1106,
 
         // QFile errors
         OpenError = 1200,
@@ -114,7 +116,16 @@ namespace amnezia
         PermissionsError = 1202,
         UnspecifiedError = 1203,
         FatalError = 1204,
-        AbortError = 1205
+        AbortError = 1205,
+
+        // Billing errors
+        BillingCanceled = 1300,
+        BillingError = 1301,
+        BillingGooglePlayError = 1302,
+        BillingUnavailable = 1303,
+        SubscriptionAlreadyOwned = 1304,
+        SubscriptionUnavailable = 1305,
+        BillingNetworkError = 1306,
       };
       Q_ENUM_NS(ErrorCode)
     }

client/core/errorstrings.cpp

@@ -50,6 +50,7 @@ QString errorString(ErrorCode code) {
     case (ErrorCode::AddressPoolError): errorMessage = QObject::tr("VPN pool error: no available addresses"); break;
 
     case (ErrorCode::ImportInvalidConfigError): errorMessage = QObject::tr("The config does not contain any containers and credentials for connecting to the server"); break;
+    case (ErrorCode::ImportOpenConfigError): errorMessage = QObject::tr("Unable to open config file"); break;
 
     // Android errors
     case (ErrorCode::AndroidError): errorMessage = QObject::tr("VPN connection error"); break;
@@ -61,6 +62,7 @@ QString errorString(ErrorCode code) {
     case (ErrorCode::ApiConfigSslError): errorMessage = QObject::tr("SSL error occurred"); break;
     case (ErrorCode::ApiConfigTimeoutError): errorMessage = QObject::tr("Server response timeout on api request"); break;
     case (ErrorCode::ApiMissingAgwPublicKey): errorMessage = QObject::tr("Missing AGW public key"); break;
+    case (ErrorCode::ApiConfigDecryptionError): errorMessage = QObject::tr("Failed to decrypt response payload"); break;
       
     // QFile errors
     case(ErrorCode::OpenError): errorMessage = QObject::tr("QFile error: The file could not be opened"); break;
@@ -70,6 +72,15 @@ QString errorString(ErrorCode code) {
     case(ErrorCode::FatalError): errorMessage =  QObject::tr("QFile error: A fatal error occurred"); break;
     case(ErrorCode::AbortError): errorMessage =  QObject::tr("QFile error: The operation was aborted"); break;
 
+    // Billing errors
+    case(ErrorCode::BillingCanceled): errorMessage = QObject::tr("Transaction was canceled by the user"); break;
+    case(ErrorCode::BillingError): errorMessage = QObject::tr("Billing error"); break;
+    case(ErrorCode::BillingGooglePlayError): errorMessage = QObject::tr("Internal Google Play error, please try again later"); break;
+    case(ErrorCode::BillingUnavailable): errorMessage = QObject::tr("Billing is unavailable, please try again later"); break;
+    case(ErrorCode::SubscriptionAlreadyOwned): errorMessage = QObject::tr("You already own this subscription"); break;
+    case(ErrorCode::SubscriptionUnavailable): errorMessage = QObject::tr("The requested subscription is not available for purchase"); break;
+    case(ErrorCode::BillingNetworkError): errorMessage = QObject::tr("A network error occurred during the operation, please check the Internet connection"); break;
+
     case(ErrorCode::InternalError):
     default:
         errorMessage = QObject::tr("Internal error"); break;

client/daemon/daemon.cpp

@@ -78,7 +78,7 @@ bool Daemon::activate(const InterfaceConfig& config) {
         return false;
       }
 
-      if (supportDnsUtils() && !dnsutils()->restoreResolvers()) {
+      if (!dnsutils()->restoreResolvers()) {
         return false;
       }
 
@@ -165,10 +165,6 @@ bool Daemon::activate(const InterfaceConfig& config) {
 }
 
 bool Daemon::maybeUpdateResolvers(const InterfaceConfig& config) {
-  if (!supportDnsUtils()) {
-    return true;
-  }
-
   if ((config.m_hopType == InterfaceConfig::MultiHopExit) ||
       (config.m_hopType == InterfaceConfig::SingleHop)) {
     QList<QHostAddress> resolvers;
@@ -423,13 +419,8 @@ bool Daemon::deactivate(bool emitSignals) {
   }
 
   // Cleanup DNS
-  if (supportDnsUtils() && !dnsutils()->restoreResolvers()) {
-    return false;
-  }
-
-  if (!wgutils()->interfaceExists()) {
-    logger.warning() << "Wireguard interface does not exist.";
-    return false;
+  if (!dnsutils()->restoreResolvers()) {
+    logger.warning() << "Failed to restore DNS resolvers.";
   }
 
   // Cleanup peers and routing
@@ -449,13 +440,9 @@ bool Daemon::deactivate(bool emitSignals) {
   }
   m_excludedAddrSet.clear();
 
-  // Delete the interface
-  if (!wgutils()->deleteInterface()) {
-    return false;
-  }
-
   m_connections.clear();
-  return true;
+  // Delete the interface
+  return wgutils()->deleteInterface();  
 }
 
 QString Daemon::logs() {

client/daemon/daemon.h

@@ -69,7 +69,6 @@ class Daemon : public QObject {
   virtual WireguardUtils* wgutils() const = 0;
   virtual bool supportIPUtils() const { return false; }
   virtual IPUtils* iputils() { return nullptr; }
-  virtual bool supportDnsUtils() const { return false; }
   virtual DnsUtils* dnsutils() { return nullptr; }
 
   static bool parseStringList(const QJsonObject& obj, const QString& name,

client/daemon/daemonlocalserverconnection.cpp

@@ -92,6 +92,17 @@ void DaemonLocalServerConnection::parseCommand(const QByteArray& data) {
 
   logger.debug() << "Command received:" << type;
 
+  // It is expected that sometimes the client will request backend logs
+  // before the first authentication. In these cases we just return empty
+  // logs.
+  if (type == "logs") {
+    QJsonObject obj;
+    obj.insert("type", "logs");
+    obj.insert("logs", "");
+    write(obj);
+    return;
+  }
+
   if (type == "activate") {
     InterfaceConfig config;
     if (!Daemon::parseConfig(obj, config)) {
@@ -115,8 +126,7 @@ void DaemonLocalServerConnection::parseCommand(const QByteArray& data) {
   if (type == "status") {
     QJsonObject obj = Daemon::instance()->getStatus();
     obj.insert("type", "status");
-    m_socket->write(QJsonDocument(obj).toJson(QJsonDocument::Compact));
-    m_socket->write("\n");
+    write(obj);
     return;
   }
 
@@ -124,8 +134,7 @@ void DaemonLocalServerConnection::parseCommand(const QByteArray& data) {
     QJsonObject obj;
     obj.insert("type", "logs");
     obj.insert("logs", Daemon::instance()->logs().replace("\n", "|"));
-    m_socket->write(QJsonDocument(obj).toJson(QJsonDocument::Compact));
-    m_socket->write("\n");
+    write(obj);
     return;
   }
 

client/mozilla/localsocketcontroller.cpp

@@ -34,8 +34,8 @@ LocalSocketController::LocalSocketController() {
   m_socket = new QLocalSocket(this);
   connect(m_socket, &QLocalSocket::connected, this,
           &LocalSocketController::daemonConnected);
-  connect(m_socket, &QLocalSocket::disconnected, this,
-          &LocalSocketController::disconnected);
+  connect(m_socket, &QLocalSocket::disconnected, this, 
+          [&] { errorOccurred(QLocalSocket::PeerClosedError); });
   connect(m_socket, &QLocalSocket::errorOccurred, this,
           &LocalSocketController::errorOccurred);
   connect(m_socket, &QLocalSocket::readyRead, this,

client/platforms/android/android_controller.cpp

@@ -287,6 +287,51 @@ bool AndroidController::requestAuthentication()
     return result;
 }
 
+bool AndroidController::isPlay()
+{
+    return callActivityMethod<jboolean>("isPlay", "()Z");
+}
+
+QJsonObject AndroidController::getSubscriptionPlans()
+{
+    QJniObject subscriptionPlans = callActivityMethod<jstring>("getSubscriptionPlans", "()Ljava/lang/String;");
+    QJsonObject json = QJsonDocument::fromJson(subscriptionPlans.toString().toUtf8()).object();
+    return json;
+}
+
+QJsonObject AndroidController::purchaseSubscription(const QString &offerToken)
+{
+    QJniObject result = callActivityMethod<jstring, jstring>("purchaseSubscription", "(Ljava/lang/String;)Ljava/lang/String;",
+                                                    QJniObject::fromString(offerToken).object<jstring>());
+    QJsonObject json = QJsonDocument::fromJson(result.toString().toUtf8()).object();
+    return json;
+}
+
+QJsonObject AndroidController::upgradeSubscription(const QString &offerToken, const QString &oldPurchaseToken)
+{
+    QJniObject result = callActivityMethod<jstring, jstring, jstring>("upgradeSubscription",
+                                                                      "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
+                                                                      QJniObject::fromString(offerToken).object<jstring>(),
+                                                                      QJniObject::fromString(oldPurchaseToken).object<jstring>());
+    QJsonObject json = QJsonDocument::fromJson(result.toString().toUtf8()).object();
+    return json;
+}
+
+QJsonObject AndroidController::acknowledgePurchase(const QString &purchaseToken)
+{
+    QJniObject result = callActivityMethod<jstring, jstring>("acknowledgePurchase", "(Ljava/lang/String;)Ljava/lang/String;",
+                                                             QJniObject::fromString(purchaseToken).object<jstring>());
+    QJsonObject json = QJsonDocument::fromJson(result.toString().toUtf8()).object();
+    return json;
+}
+
+QJsonObject AndroidController::queryPurchases()
+{
+    QJniObject result = callActivityMethod<jstring>("queryPurchases", "()Ljava/lang/String;");
+    QJsonObject json = QJsonDocument::fromJson(result.toString().toUtf8()).object();
+    return json;
+}
+
 // Moving log processing to the Android side
 jclass AndroidController::log;
 jmethodID AndroidController::logDebug;

client/platforms/android/android_controller.h

@@ -48,6 +48,12 @@ public:
     bool isNotificationPermissionGranted();
     void requestNotificationPermission();
     bool requestAuthentication();
+    bool isPlay();
+    QJsonObject getSubscriptionPlans();
+    QJsonObject purchaseSubscription(const QString &offerToken);
+    QJsonObject upgradeSubscription(const QString &offerToken, const QString &oldPurchaseToken);
+    QJsonObject acknowledgePurchase(const QString &purchaseToken);
+    QJsonObject queryPurchases();
 
     static bool initLogging();
     static void messageHandler(QtMsgType type, const QMessageLogContext &context, const QString &message);

client/platforms/linux/daemon/linuxdaemon.h

@@ -22,7 +22,6 @@ class LinuxDaemon final : public Daemon {
 
  protected:
   WireguardUtils* wgutils() const override { return m_wgutils; }
-  bool supportDnsUtils() const override { return true; }
   DnsUtils* dnsutils() override { return m_dnsutils; }
   bool supportIPUtils() const override { return true; }
   IPUtils* iputils() override { return m_iputils; }

client/platforms/macos/daemon/macosdaemon.h

@@ -21,7 +21,6 @@ class MacOSDaemon final : public Daemon {
 
  protected:
   WireguardUtils* wgutils() const override { return m_wgutils; }
-  bool supportDnsUtils() const override { return true; }
   DnsUtils* dnsutils() override { return m_dnsutils; }
   bool supportIPUtils() const override { return true; }
   IPUtils* iputils() override { return m_iputils; }

client/platforms/windows/daemon/windowsdaemon.h

@@ -26,7 +26,6 @@ class WindowsDaemon final : public Daemon {
  protected:
   bool run(Op op, const InterfaceConfig& config) override;
   WireguardUtils* wgutils() const override { return m_wgutils; }
-  bool supportDnsUtils() const override { return true; }
   DnsUtils* dnsutils() override { return m_dnsutils; }
 
  private:

client/platforms/windows/daemon/windowssplittunnel.cpp

@@ -502,7 +502,7 @@ QString WindowsSplitTunnel::convertPath(const QString& path) {
     // device should contain : for e.g C:
     return "";
   }
-  QByteArray buffer(2048, 0xFF);
+  QByteArray buffer(2048, 0xFFu);
   auto ok = QueryDosDeviceW(qUtf16Printable(driveLetter),
                             (wchar_t*)buffer.data(), buffer.size() / 2);
 

client/platforms/windows/daemon/wireguardutilswindows.cpp

@@ -248,7 +248,7 @@ bool WireguardUtilsWindows::updateRoutePrefix(const IPAddress& prefix) {
   }
   if (result != NO_ERROR) {
     logger.error() << "Failed to create route to"
-                   << logger.sensitive(prefix.toString())
+                   << prefix.toString()
                    << "result:" << result;
   }
   return result == NO_ERROR;
@@ -265,7 +265,7 @@ bool WireguardUtilsWindows::deleteRoutePrefix(const IPAddress& prefix) {
   }
   if (result != NO_ERROR) {
     logger.error() << "Failed to delete route to"
-                   << logger.sensitive(prefix.toString())
+                   << prefix.toString()
                    << "result:" << result;
   }
   return result == NO_ERROR;

client/platforms/windows/windowscommons.cpp

@@ -21,7 +21,7 @@
 #include "platforms/windows/windowsutils.h"
 
 constexpr const char* VPN_NAME = "AmneziaVPN";
-constexpr const char* WIREGUARD_DIR = "WireGuard";
+constexpr const char* WIREGUARD_DIR = "AmneziaWG";
 constexpr const char* DATA_DIR = "Data";
 
 namespace {

client/ui/controllers/connectionController.cpp

@@ -34,13 +34,13 @@ ConnectionController::ConnectionController(const QSharedPointer<ServersModel> &s
 
 void ConnectionController::openConnection()
 {
-// #if !defined(Q_OS_ANDROID) && !defined(Q_OS_IOS)
-//     if (!Utils::processIsRunning(Utils::executable(SERVICE_NAME, false), true))
-//     {
-//         emit connectionErrorOccurred(ErrorCode::AmneziaServiceNotRunning);
-//         return;
-//     }
-// #endif
+#if !defined(Q_OS_ANDROID) && !defined(Q_OS_IOS)
+    if (!Utils::processIsRunning(Utils::executable(SERVICE_NAME, false), true))
+    {
+        emit connectionErrorOccurred(ErrorCode::AmneziaServiceNotRunning);
+        return;
+    }
+#endif
 
     int serverIndex = m_serversModel->getDefaultServerIndex();
     QJsonObject serverConfig = m_serversModel->getServerConfig(serverIndex);
@@ -51,6 +51,9 @@ void ConnectionController::openConnection()
     if (configVersion == ApiConfigSources::Telegram
         && !m_serversModel->data(serverIndex, ServersModel::Roles::HasInstalledContainers).toBool()) {
         emit updateApiConfigFromTelegram();
+        } else if (configVersion == ApiConfigSources::AmneziaGateway
+        && !m_serversModel->data(serverIndex, ServersModel::Roles::HasInstalledContainers).toBool()) {
+        emit updateApiConfigFromGateway();
     } else if (configVersion && m_serversModel->isApiKeyExpired(serverIndex)) {
         qDebug() << "attempt to update api config by end_date event";
         if (configVersion == ApiConfigSources::Telegram) {

client/ui/controllers/importController.cpp

@@ -39,11 +39,12 @@ namespace
         const QString amneziaConfigPatternUserName = "userName";
         const QString amneziaConfigPatternPassword = "password";
         const QString amneziaFreeConfigPattern = "api_key";
+        const QString amneziaPremiumConfigPattern = "auth_data";
         const QString backupPattern = "Servers/serversList";
 
         if (config.contains(backupPattern)) {
             return ConfigTypes::Backup;
-        } else if (config.contains(amneziaConfigPattern) || config.contains(amneziaFreeConfigPattern)
+        } else if (config.contains(amneziaConfigPattern) || config.contains(amneziaFreeConfigPattern) || config.contains(amneziaPremiumConfigPattern)
                    || (config.contains(amneziaConfigPatternHostName) && config.contains(amneziaConfigPatternUserName)
                        && config.contains(amneziaConfigPatternPassword))) {
             return ConfigTypes::Amnezia;
@@ -84,7 +85,7 @@ bool ImportController::extractConfigFromFile(const QString &fileName)
         return extractConfigFromData(data);
     }
 
-    emit importErrorOccurred(tr("Unable to open file"), false);
+    emit importErrorOccurred(ErrorCode::ImportOpenConfigError, false);
     return false;
 }
 
@@ -188,12 +189,12 @@ bool ImportController::extractConfigFromData(QString data)
         if (!m_serversModel->getServersCount()) {
             emit restoreAppConfig(config.toUtf8());
         } else {
-            emit importErrorOccurred(tr("Invalid configuration file"), false);
+            emit importErrorOccurred(ErrorCode::ImportInvalidConfigError, false);
         }
         break;
     }
     case ConfigTypes::Invalid: {
-        emit importErrorOccurred(tr("Invalid configuration file"), false);
+        emit importErrorOccurred(ErrorCode::ImportInvalidConfigError, false);
         break;
     }
     }

client/ui/controllers/importController.h

@@ -54,7 +54,6 @@ public slots:
 
 signals:
     void importFinished();
-    void importErrorOccurred(const QString &errorMessage, bool goToPageHome);
     void importErrorOccurred(ErrorCode errorCode, bool goToPageHome);
 
     void qrDecodingFinished();

client/ui/controllers/installController.cpp

@@ -32,32 +32,8 @@ namespace
         constexpr char availableCountries[] = "available_countries";
 
         constexpr char apiConfig[] = "api_config";
+        constexpr char authData[] = "auth_data";
     }
-
-#ifdef Q_OS_WINDOWS
-    QString getNextDriverLetter()
-    {
-        QProcess drivesProc;
-        drivesProc.start("wmic logicaldisk get caption");
-        drivesProc.waitForFinished();
-        QString drives = drivesProc.readAll();
-        qDebug() << drives;
-
-        QString letters = "CFGHIJKLMNOPQRSTUVWXYZ";
-        QString letter;
-        for (int i = letters.size() - 1; i > 0; i--) {
-            letter = letters.at(i);
-            if (!drives.contains(letter + ":"))
-                break;
-        }
-        if (letter == "C:") {
-            // set err info
-            qDebug() << "Can't find free drive letter";
-            return "";
-        }
-        return letter;
-    }
-#endif
 }
 
 InstallController::InstallController(const QSharedPointer<ServersModel> &serversModel, const QSharedPointer<ContainersModel> &containersModel,
@@ -135,10 +111,10 @@ void InstallController::install(DockerContainer container, int port, TransportPr
                 containerConfig[config_key::transportPacketMagicHeader] = transportPacketMagicHeader;
             } else if (container == DockerContainer::Sftp) {
                 containerConfig.insert(config_key::userName, protocols::sftp::defaultUserName);
-                containerConfig.insert(config_key::password, Utils::getRandomString(10));
+                containerConfig.insert(config_key::password, Utils::getRandomString(16));
             } else if (container == DockerContainer::Socks5Proxy) {
                 containerConfig.insert(config_key::userName, protocols::socks5Proxy::defaultUserName);
-                containerConfig.insert(config_key::password, Utils::getRandomString(10));
+                containerConfig.insert(config_key::password, Utils::getRandomString(16));
             }
 
             config.insert(config_key::container, ContainerProps::containerToString(container));
@@ -667,7 +643,7 @@ void InstallController::mountSftpDrive(const QString &port, const QString &passw
     QString hostname = serverCredentials.hostName;
 
 #ifdef Q_OS_WINDOWS
-    mountPath = getNextDriverLetter() + ":";
+    mountPath = Utils::getNextDriverLetter() + ":";
     //    QString cmd = QString("net use \\\\sshfs\\%1@x.x.x.x!%2 /USER:%1 %3")
     //            .arg(labelTftpUserNameText())
     //            .arg(labelTftpPortText())
@@ -768,7 +744,7 @@ bool InstallController::checkSshConnection(QSharedPointer<ServerController> serv
     } else {
         if (output.contains(tr("Please login as the user"))) {
             output.replace("\n", "");
-            emit installationErrorOccurred(output);
+            emit wrongInstallationUser(output);
             return false;
         }
     }
@@ -826,7 +802,7 @@ bool InstallController::installServiceFromApi()
 
     ErrorCode errorCode = apiController.getConfigForService(m_settings->getInstallationUuid(true), m_apiServicesModel->getCountryCode(),
                                                             m_apiServicesModel->getSelectedServiceType(),
-                                                            m_apiServicesModel->getSelectedServiceProtocol(), "", serverConfig);
+                                                            m_apiServicesModel->getSelectedServiceProtocol(), "", QJsonObject(), serverConfig);
     if (errorCode != ErrorCode::NoError) {
         emit installationErrorOccurred(errorCode);
         return false;
@@ -853,24 +829,26 @@ bool InstallController::updateServiceFromApi(const int serverIndex, const QStrin
 
     auto serverConfig = m_serversModel->getServerConfig(serverIndex);
     auto apiConfig = serverConfig.value(configKey::apiConfig).toObject();
+    auto authData = serverConfig.value(configKey::authData).toObject();
 
     QJsonObject newServerConfig;
-    ErrorCode errorCode =
-            apiController.getConfigForService(m_settings->getInstallationUuid(true), apiConfig.value(configKey::userCountryCode).toString(),
-                                              apiConfig.value(configKey::serviceType).toString(),
-                                              apiConfig.value(configKey::serviceProtocol).toString(), newCountryCode, newServerConfig);
+    ErrorCode errorCode = apiController.getConfigForService(
+            m_settings->getInstallationUuid(true), apiConfig.value(configKey::userCountryCode).toString(),
+            apiConfig.value(configKey::serviceType).toString(), apiConfig.value(configKey::serviceProtocol).toString(), newCountryCode,
+            authData, newServerConfig);
     if (errorCode != ErrorCode::NoError) {
         emit installationErrorOccurred(errorCode);
         return false;
     }
 
     QJsonObject newApiConfig = newServerConfig.value(configKey::apiConfig).toObject();
-    newApiConfig.insert(configKey::serviceInfo, apiConfig.value(configKey::serviceInfo));
     newApiConfig.insert(configKey::userCountryCode, apiConfig.value(configKey::userCountryCode));
     newApiConfig.insert(configKey::serviceType, apiConfig.value(configKey::serviceType));
     newApiConfig.insert(configKey::serviceProtocol, apiConfig.value(configKey::serviceProtocol));
 
     newServerConfig.insert(configKey::apiConfig, newApiConfig);
+    newServerConfig.insert(configKey::authData, authData);
+    newServerConfig.insert(config_key::crc, serverConfig.value(config_key::crc));
     m_serversModel->editServer(newServerConfig, serverIndex);
 
     if (reloadServiceConfig) {

client/ui/controllers/installController.h

@@ -75,8 +75,8 @@ signals:
     void removeAllContainersFinished(const QString &finishedMessage);
     void removeProcessedContainerFinished(const QString &finishedMessage);
 
-    void installationErrorOccurred(const QString &errorMessage);
     void installationErrorOccurred(ErrorCode errorCode);
+    void wrongInstallationUser(const QString &message);
 
     void serverAlreadyExists(int serverIndex);
 

client/ui/models/apiCountryModel.cpp

@@ -39,6 +39,9 @@ QVariant ApiCountryModel::data(const QModelIndex &index, int role) const
     case CountryNameRole: {
         return countryInfo.value(configKey::serverCountryName).toString();
     }
+    case CountryImageCodeRole: {
+        return countryInfo.value(configKey::serverCountryCode).toString().toUpper();
+    }
     }
 
     return QVariant();
@@ -76,5 +79,6 @@ QHash<int, QByteArray> ApiCountryModel::roleNames() const
     QHash<int, QByteArray> roles;
     roles[CountryNameRole] = "countryName";
     roles[CountryCodeRole] = "countryCode";
+    roles[CountryImageCodeRole] = "countryImageCode";
     return roles;
 }

client/ui/models/apiCountryModel.h

@@ -11,7 +11,8 @@ class ApiCountryModel : public QAbstractListModel
 public:
     enum Roles {
         CountryNameRole = Qt::UserRole + 1,
-        CountryCodeRole
+        CountryCodeRole,
+        CountryImageCodeRole
     };
 
     explicit ApiCountryModel(QObject *parent = nullptr);

client/ui/models/clientManagementModel.cpp

@@ -77,6 +77,7 @@ ErrorCode ClientManagementModel::updateModel(const DockerContainer container, co
 {
     beginResetModel();
     m_clientsTable = QJsonArray();
+    endResetModel();
 
     ErrorCode error = ErrorCode::NoError;
 
@@ -90,10 +91,10 @@ ErrorCode ClientManagementModel::updateModel(const DockerContainer container, co
     const QByteArray clientsTableString = serverController->getTextFileFromContainer(container, credentials, clientsTableFile, error);
     if (error != ErrorCode::NoError) {
         logger.error() << "Failed to get the clientsTable file from the server";
-        endResetModel();
         return error;
     }
 
+    beginResetModel();
     m_clientsTable = QJsonDocument::fromJson(clientsTableString).array();
 
     if (m_clientsTable.isEmpty()) {
@@ -601,5 +602,6 @@ QHash<int, QByteArray> ClientManagementModel::roleNames() const
     roles[LatestHandshakeRole] = "latestHandshake";
     roles[DataReceivedRole] = "dataReceived";
     roles[DataSentRole] = "dataSent";
+    roles[AllowedIpsRole] = "allowedIps";
     return roles;
 }

client/ui/models/servers_model.cpp

@@ -771,5 +771,5 @@ const QString ServersModel::getDefaultServerImagePathCollapsed()
     if (countryCode.isEmpty()) {
         return "";
     }
-    return QString("qrc:/countriesFlags/images/flagKit/%1.svg").arg(countryCode);
+    return QString("qrc:/countriesFlags/images/flagKit/%1.svg").arg(countryCode.toUpper());
 }

client/ui/qml/Pages2/PageSettingsApiLanguageList.qml

@@ -90,7 +90,7 @@ PageType {
                         Layout.rightMargin: 32
                         Layout.alignment: Qt.AlignRight
 
-                        source: "qrc:/countriesFlags/images/flagKit/" + countryCode + ".svg"
+                        source: "qrc:/countriesFlags/images/flagKit/" + countryImageCode + ".svg"
                     }
                 }
 

client/ui/qml/Pages2/PageSetupWizardConfigSource.qml

@@ -49,6 +49,8 @@ PageType {
 
 
             HeaderType {
+                property bool isVisible: SettingsController.getInstallationUuid() !== "" || PageController.isStartPageVisible()
+
                 Layout.fillWidth: true
                 Layout.topMargin: 24
                 Layout.rightMargin: 16
@@ -56,7 +58,7 @@ PageType {
 
                 headerText: qsTr("Connection")
 
-                actionButtonImage: PageController.isStartPageVisible() ? "qrc:/images/controls/more-vertical.svg" : ""
+                actionButtonImage: isVisible ? "qrc:/images/controls/more-vertical.svg" : ""
                 actionButtonFunction: function() {
                     moreActionsDrawer.open()
                 }
@@ -67,18 +69,19 @@ PageType {
                     parent: root
 
                     anchors.fill: parent
-                    expandedHeight: root.height * 0.35
+                    expandedHeight: root.height * 0.5
 
                     expandedContent: ColumnLayout {
                         anchors.top: parent.top
                         anchors.left: parent.left
                         anchors.right: parent.right
-                        anchors.leftMargin: 16
-                        anchors.rightMargin: 16
+                        spacing: 0
 
                         HeaderType {
                             Layout.fillWidth: true
                             Layout.topMargin: 32
+                            Layout.leftMargin: 16
+                            Layout.rightMargin: 16
 
                             headerText: qsTr("Settings")
                         }
@@ -87,9 +90,12 @@ PageType {
                             id: switcher
                             Layout.fillWidth: true
                             Layout.topMargin: 16
+                            Layout.leftMargin: 16
+                            Layout.rightMargin: 16
 
                             text: qsTr("Enable logs")
 
+                            visible: PageController.isStartPageVisible()
                             checked: SettingsController.isLoggingEnabled
                             onCheckedChanged: {
                                 if (checked !== SettingsController.isLoggingEnabled) {
@@ -98,6 +104,28 @@ PageType {
                             }
                         }
 
+                        LabelWithButtonType {
+                            id: supportUuid
+                            Layout.fillWidth: true
+                            Layout.topMargin: 16
+
+                            text: qsTr("Support tag")
+                            descriptionText: SettingsController.getInstallationUuid()
+
+                            descriptionOnTop: true
+
+                            rightImageSource: "qrc:/images/controls/copy.svg"
+                            rightImageColor: AmneziaStyle.color.paleGray
+
+                            visible: SettingsController.getInstallationUuid() !== ""
+                            clickedFunction: function() {
+                                GC.copyToClipBoard(descriptionText)
+                                PageController.showNotificationMessage(qsTr("Copied"))
+                                if (!GC.isMobile()) {
+                                    this.rightButton.forceActiveFocus()
+                                }
+                            }
+                        }
                     }
                 }
             }

client/ui/qml/Pages2/PageSetupWizardViewConfig.qml

@@ -37,7 +37,7 @@ PageType {
     Connections {
         target: ImportController
 
-        function onImportErrorOccurred(errorMessage, goToPageHome) {
+        function onImportErrorOccurred(error, goToPageHome) {
             if (goToPageHome) {
                 PageController.goToStartPage()
             } else {

client/ui/qml/Pages2/PageShare.qml

@@ -772,7 +772,8 @@ PageType {
                                 }
                             }
 
-                            anchors.fill: parent
+                            width: root.width
+                            height: root.height
 
                             expandedContent: ColumnLayout {
                                 id: expandedContent
@@ -783,8 +784,6 @@ PageType {
                                 anchors.leftMargin: 16
                                 anchors.rightMargin: 16
 
-                                spacing: 8
-
                                 onImplicitHeightChanged: {
                                     clientInfoDrawer.expandedHeight = expandedContent.implicitHeight + 32
                                 }
@@ -797,57 +796,54 @@ PageType {
                                     }
                                 }
 
-                                Header2Type {
-                                    Layout.fillWidth: true
-
-                                    headerText: clientName
-                                }
-
-                                ColumnLayout
-                                {
-                                    id: textColumn
-                                    property string textColor: AmneziaStyle.color.mutedGray
+                                Header2TextType {
+                                    Layout.maximumWidth: parent.width
                                     Layout.bottomMargin: 24
 
-                                    ParagraphTextType {
-                                        color: textColumn.textColor
-                                        visible: creationDate
-                                        Layout.fillWidth: true
+                                    text: clientName
+                                    maximumLineCount: 2
+                                    wrapMode: Text.Wrap
+                                    elide: Qt.ElideRight
+                                }
 
-                                        text: qsTr("Creation date: %1").arg(creationDate)
-                                    }
+                                ParagraphTextType {
+                                    color: AmneziaStyle.color.mutedGray
+                                    visible: creationDate
+                                    Layout.fillWidth: true
 
-                                    ParagraphTextType {
-                                        color: textColumn.textColor
-                                        visible: latestHandshake
-                                        Layout.fillWidth: true
+                                    text: qsTr("Creation date: %1").arg(creationDate)
+                                }
 
-                                        text: qsTr("Latest handshake: %1").arg(latestHandshake)
-                                    }
+                                ParagraphTextType {
+                                    color: AmneziaStyle.color.mutedGray
+                                    visible: latestHandshake
+                                    Layout.fillWidth: true
 
-                                    ParagraphTextType {
-                                        color: textColumn.textColor
-                                        visible: dataReceived
-                                        Layout.fillWidth: true
+                                    text: qsTr("Latest handshake: %1").arg(latestHandshake)
+                                }
 
-                                        text: qsTr("Data received: %1").arg(dataReceived)
-                                    }
+                                ParagraphTextType {
+                                    color: AmneziaStyle.color.mutedGray
+                                    visible: dataReceived
+                                    Layout.fillWidth: true
 
-                                    ParagraphTextType {
-                                        color: textColumn.textColor
-                                        visible: dataSent
-                                        Layout.fillWidth: true
+                                    text: qsTr("Data received: %1").arg(dataReceived)
+                                }
 
-                                        text: qsTr("Data sent: %1").arg(dataSent)
-                                    }
+                                ParagraphTextType {
+                                    color: AmneziaStyle.color.mutedGray
+                                    visible: dataSent
+                                    Layout.fillWidth: true
 
-                                    ParagraphTextType {
-                                        color: textColumn.textColor
-                                        visible: allowedIps
-                                        Layout.fillWidth: true
+                                    text: qsTr("Data sent: %1").arg(dataSent)
+                                }
 
-                                        text: qsTr("Allowed IPs: %1").arg(allowedIps)
-                                    }
+                                ParagraphTextType {
+                                    color: AmneziaStyle.color.mutedGray
+                                    visible: allowedIps
+                                    Layout.fillWidth: true
+
+                                    text: qsTr("Allowed IPs: %1").arg(allowedIps)
                                 }
 
                                 Item {
@@ -952,6 +948,7 @@ PageType {
                                 BasicButtonType {
                                     id: revokeButton
                                     Layout.fillWidth: true
+                                    Layout.topMargin: 8
 
                                     defaultColor: AmneziaStyle.color.transparent
                                     hoveredColor: AmneziaStyle.color.translucentWhite

client/ui/qml/Pages2/PageStart.qml

@@ -123,6 +123,10 @@ PageType {
             }
         }
 
+        function onWrongInstallationUser(message) {
+            onInstallationErrorOccurred(message)
+        }
+
         function onUpdateContainerFinished(message) {
             PageController.showNotificationMessage(message)
             PageController.closePage()

client/utilities.cpp

@@ -10,18 +10,72 @@
 #include <QJsonObject>
 
 #include "utilities.h"
-#include "version.h"
+
+#ifdef Q_OS_WINDOWS
+QString printErrorMessage(DWORD errorCode) {
+    LPVOID lpMsgBuf;
+
+    DWORD dwFlags = FORMAT_MESSAGE_ALLOCATE_BUFFER |
+                    FORMAT_MESSAGE_FROM_SYSTEM |
+                    FORMAT_MESSAGE_IGNORE_INSERTS;
+
+    DWORD dwLanguageId = MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US);
+
+    FormatMessageW(
+        dwFlags,
+        NULL,
+        errorCode,
+        dwLanguageId,
+        (LPWSTR)&lpMsgBuf,
+        0,
+        NULL
+        );
+
+    QString errorMsg = QString::fromWCharArray((LPCWSTR)lpMsgBuf);
+    LocalFree(lpMsgBuf);
+    return errorMsg.trimmed();
+}
+
+QString Utils::getNextDriverLetter()
+{
+    DWORD drivesBitmask = GetLogicalDrives();
+    if (drivesBitmask == 0) {
+        DWORD error = GetLastError();
+        qDebug() << "GetLogicalDrives failed. Error code:" << error;
+        return "";
+    }
+
+    QString letters = "FGHIJKLMNOPQRSTUVWXYZ";
+    QString availableLetter;
+
+    for (int i = letters.size() - 1; i >= 0; --i) {
+        QChar letterChar = letters.at(i);
+        int driveIndex = letterChar.toLatin1() - 'A';
+
+        if ((drivesBitmask & (1 << driveIndex)) == 0) {
+            availableLetter = letterChar;
+            break;
+        }
+    }
+
+    if (availableLetter.isEmpty()) {
+        qDebug() << "Can't find free drive letter";
+        return "";
+    }
+
+    return availableLetter;
+}
+#endif
 
 QString Utils::getRandomString(int len)
 {
-    const QString possibleCharacters("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
-
+    const QString possibleCharacters = QStringLiteral("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
     QString randomString;
+
     for (int i = 0; i < len; ++i) {
-        quint32 index = QRandomGenerator::global()->generate() % possibleCharacters.length();
-        QChar nextChar = possibleCharacters.at(index);
-        randomString.append(nextChar);
+        randomString.append(possibleCharacters.at(QRandomGenerator::system()->bounded(possibleCharacters.length())));
     }
+
     return randomString;
 }
 
@@ -109,30 +163,34 @@ QString Utils::usrExecutable(const QString &baseName)
 bool Utils::processIsRunning(const QString &fileName, const bool fullFlag)
 {
 #ifdef Q_OS_WIN
-    QProcess process;
-    process.setReadChannel(QProcess::StandardOutput);
-    process.setProcessChannelMode(QProcess::MergedChannels);
-    process.start("wmic.exe",
-                  QStringList() << "/OUTPUT:STDOUT"
-                                << "PROCESS"
-                                << "get"
-                                << "Caption");
-    process.waitForStarted();
-    process.waitForFinished();
-    QString processData(process.readAll());
-    QStringList processList = processData.split(QRegularExpression("[\r\n]"), Qt::SkipEmptyParts);
-    foreach (const QString &rawLine, processList) {
-        const QString line = rawLine.simplified();
-        if (line.isEmpty()) {
-            continue;
-        }
+    HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+    if (hSnapshot == INVALID_HANDLE_VALUE) {
+        qWarning() << "Utils::processIsRunning error CreateToolhelp32Snapshot";
+        return false;
+    }
 
-        if (line == fileName) {
+    PROCESSENTRY32W pe32;
+    pe32.dwSize = sizeof(PROCESSENTRY32W);
+
+    if (!Process32FirstW(hSnapshot, &pe32)) {
+        CloseHandle(hSnapshot);
+        qWarning() << "Utils::processIsRunning error Process32FirstW";
+        return false;
+    }
+
+    do {
+        QString exeFile = QString::fromWCharArray(pe32.szExeFile);
+
+        if (exeFile.compare(fileName, Qt::CaseInsensitive) == 0) {
+            CloseHandle(hSnapshot);
             return true;
         }
-    }
+    } while (Process32NextW(hSnapshot, &pe32));
+
+    CloseHandle(hSnapshot);
     return false;
-#elif defined(Q_OS_IOS)
+
+#elif defined(Q_OS_IOS) || defined(Q_OS_ANDROID)
     return false;
 #else
     QProcess process;
@@ -150,13 +208,45 @@ bool Utils::processIsRunning(const QString &fileName, const bool fullFlag)
 #endif
 }
 
-void Utils::killProcessByName(const QString &name)
+bool Utils::killProcessByName(const QString &name)
 {
     qDebug().noquote() << "Kill process" << name;
 #ifdef Q_OS_WIN
-    QProcess::execute("taskkill", QStringList() << "/IM" << name << "/F");
-#elif defined Q_OS_IOS
-    return;
+    HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+    if (hSnapshot == INVALID_HANDLE_VALUE)
+        return false;
+
+    PROCESSENTRY32W pe32;
+    pe32.dwSize = sizeof(PROCESSENTRY32W);
+
+    bool success = false;
+
+    if (Process32FirstW(hSnapshot, &pe32)) {
+        do {
+            QString exeFile = QString::fromWCharArray(pe32.szExeFile);
+
+            if (exeFile.compare(name, Qt::CaseInsensitive) == 0) {
+                HANDLE hProcess = OpenProcess(PROCESS_TERMINATE, FALSE, pe32.th32ProcessID);
+                if (hProcess != NULL) {
+                    if (TerminateProcess(hProcess, 0)) {
+                        success = true;
+                    } else {
+                        DWORD error = GetLastError();
+                        qCritical() << "Can't terminate process" << exeFile << "(PID:" << pe32.th32ProcessID << "). Error:" << printErrorMessage(error);
+                    }
+                    CloseHandle(hProcess);
+                } else {
+                    DWORD error = GetLastError();
+                    qCritical() << "Can't open process for termination" << exeFile << "(PID:" << pe32.th32ProcessID << "). Error:" << printErrorMessage(error);
+                }
+            }
+        } while (Process32NextW(hSnapshot, &pe32));
+    }
+
+    CloseHandle(hSnapshot);
+    return success;
+#elif defined Q_OS_IOS || defined(Q_OS_ANDROID)
+    return false;
 #else
     QProcess::execute(QString("pkill %1").arg(name));
 #endif
@@ -244,3 +334,22 @@ bool Utils::signalCtrl(DWORD dwProcessId, DWORD dwCtrlEvent)
 }
 
 #endif
+
+void Utils::logException(const std::exception &e)
+{
+    qCritical() << e.what();
+    try {
+        std::rethrow_if_nested(e);
+    } catch (const std::exception &nested) {
+        logException(nested);
+    } catch (...) {}
+}
+
+void Utils::logException(const std::exception_ptr &eptr)
+{
+    try {
+        if (eptr) std::rethrow_exception(eptr);
+    } catch (const std::exception &e) {
+        logException(e);
+    } catch (...) {}
+}

client/utilities.h

@@ -7,7 +7,8 @@
 #include <QJsonDocument>
 
 #ifdef Q_OS_WIN
-    #include "Windows.h"
+#include <windows.h>
+#include <tlhelp32.h>
 #endif
 
 class Utils : public QObject
@@ -27,15 +28,19 @@ public:
     static bool initializePath(const QString &path);
 
     static bool processIsRunning(const QString &fileName, const bool fullFlag = false);
-    static void killProcessByName(const QString &name);
+    static bool killProcessByName(const QString &name);
 
     static QString openVpnExecPath();
     static QString wireguardExecPath();
     static QString certUtilPath();
     static QString tun2socksPath();
 
+    static void logException(const std::exception &e);
+    static void logException(const std::exception_ptr &eptr = std::current_exception());
+
 #ifdef Q_OS_WIN
     static bool signalCtrl(DWORD dwProcessId, DWORD dwCtrlEvent);
+    static QString getNextDriverLetter();
 #endif
 };
 

client/vpnconnection.cpp

@@ -56,14 +56,15 @@ void VpnConnection::onConnectionStateChanged(Vpn::ConnectionState state)
 {
 
 #ifdef AMNEZIA_DESKTOP
-    QString proto = m_settings->defaultContainerName(m_settings->defaultServerIndex());
+    auto container = m_settings->defaultContainer(m_settings->defaultServerIndex());
 
     if (IpcClient::Interface()) {
         if (state == Vpn::ConnectionState::Connected) {
             IpcClient::Interface()->resetIpStack();
             IpcClient::Interface()->flushDns();
 
-            if (!m_vpnConfiguration.value(config_key::configVersion).toInt()) {
+            if (!m_vpnConfiguration.value(config_key::configVersion).toInt() && container != DockerContainer::Awg
+                && container != DockerContainer::WireGuard) {
                 QString dns1 = m_vpnConfiguration.value(config_key::dns1).toString();
                 QString dns2 = m_vpnConfiguration.value(config_key::dns2).toString();
 

deploy/build_android.sh

@@ -23,6 +23,7 @@ Options:
                                   By default, the latest available platform is used
  -m, --move                       Move the build result to the root of the build directory
  -f, --fdroid                     Build for F-Droid
+ -p, --play                       Build AAB for Google Play
  -h, --help                       Display this help
 
 EOT
@@ -30,7 +31,7 @@ EOT
 
 BUILD_TYPE="release"
 
-opts=$(getopt -l debug,aab,apk:,build-platform:,move,fdroid,help -o "dua:b:mfh" -- "$@")
+opts=$(getopt -l debug,aab,apk:,build-platform:,move,fdroid,play,help -o "dua:b:mfph" -- "$@")
 eval set -- "$opts"
 while true; do
   case "$1" in
@@ -40,6 +41,7 @@ while true; do
     -b | --build-platform) ANDROID_BUILD_PLATFORM=$2; shift 2;;
     -m | --move) MOVE_RESULT=1; shift;;
     -f | --fdroid) FDROID=1; shift;;
+    -p | --play) PLAY=1; shift;;
     -h | --help) usage; exit 0;;
     --) shift; break;;
   esac
@@ -149,11 +151,17 @@ if [ -v FDROID ]; then
   BUILD_TYPE="fdroid"
 fi
 
+if [ -v PLAY ]; then
+  AAB_FLAVOR="play"
+else
+  AAB_FLAVOR="oss"
+fi
+
 if [ -v AAB ]; then
-  gradle_opts+=(bundle"${BUILD_TYPE^}")
+  gradle_opts+=(bundle"${AAB_FLAVOR^}${BUILD_TYPE^}")
 fi
 if [ -v ABIS ]; then
-  gradle_opts+=(assemble"${BUILD_TYPE^}")
+  gradle_opts+=(assembleOss"${BUILD_TYPE^}")
 fi
 
 $OUT_APP_DIR/android-build/gradlew \
@@ -164,7 +172,7 @@ $OUT_APP_DIR/android-build/gradlew \
 if [[ -v CI || -v MOVE_RESULT ]]; then
   echo "Moving APK/AAB..."
   if [ -v AAB ]; then
-    mv -u $OUT_APP_DIR/android-build/build/outputs/bundle/$BUILD_TYPE/AmneziaVPN-$BUILD_TYPE.aab \
+    mv -u $OUT_APP_DIR/android-build/build/outputs/bundle/$AAB_FLAVOR"${BUILD_TYPE^}"/AmneziaVPN-$AAB_FLAVOR-$BUILD_TYPE.aab \
        $PROJECT_DIR/deploy/build/
   fi
 
@@ -181,7 +189,7 @@ if [[ -v CI || -v MOVE_RESULT ]]; then
     IFS=';' read -r -a abi_array <<< "$ABIS"
     for ABI in "${abi_array[@]}"
     do
-      mv -u $OUT_APP_DIR/android-build/build/outputs/apk/$BUILD_TYPE/AmneziaVPN-$ABI-$suffix.apk \
+      mv -u $OUT_APP_DIR/android-build/build/outputs/apk/oss/$BUILD_TYPE/AmneziaVPN-oss-$ABI-$suffix.apk \
        $PROJECT_DIR/deploy/build/
     done
   fi