fix: add separate method for reading files to fix file reading on Android TV

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

@@ -13,6 +13,7 @@ import android.content.Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
 import android.content.ServiceConnection
 import android.content.pm.PackageManager
 import android.graphics.Bitmap
+import android.net.Uri
 import android.net.VpnService
 import android.os.Build
 import android.os.Bundle
@@ -21,6 +22,8 @@ import android.os.IBinder
 import android.os.Looper
 import android.os.Message
 import android.os.Messenger
+import android.os.ParcelFileDescriptor
+import android.provider.OpenableColumns
 import android.provider.Settings
 import android.view.MotionEvent
 import android.view.WindowManager.LayoutParams
@@ -29,6 +32,7 @@ import android.widget.Toast
 import androidx.annotation.MainThread
 import androidx.annotation.RequiresApi
 import androidx.core.content.ContextCompat
+import java.io.FileNotFoundException
 import java.io.IOException
 import kotlin.LazyThreadSafetyMode.NONE
 import kotlin.text.RegexOption.IGNORE_CASE
@@ -72,6 +76,7 @@ class AmneziaActivity : QtActivity() {
     private var isInBoundState = false
     private var notificationStateReceiver: BroadcastReceiver? = null
     private lateinit var vpnServiceMessenger: IpcMessenger
+    private var pfd: ParcelFileDescriptor? = null
 
     private val actionResultHandlers = mutableMapOf<Int, ActivityResultHandler>()
     private val permissionRequestHandlers = mutableMapOf<Int, PermissionRequestHandler>()
@@ -564,6 +569,11 @@ class AmneziaActivity : QtActivity() {
                     }
                 }
             }.also {
+                if (packageManager.resolveActivity(it, PackageManager.MATCH_DEFAULT_ONLY) == null) {
+                    Log.w(TAG, "Not found activity for ACTION_OPEN_DOCUMENT intent")
+                    it.action = Intent.ACTION_GET_CONTENT
+                }
+
                 try {
                     startActivityForResult(it, OPEN_FILE_ACTION_CODE, ActivityResultHandler(
                         onAny = {
@@ -582,6 +592,33 @@ class AmneziaActivity : QtActivity() {
         }
     }
 
+    @Suppress("unused")
+    fun getFd(fileName: String): Int = try {
+        Log.v(TAG, "Get fd for $fileName")
+        pfd = contentResolver.openFileDescriptor(Uri.parse(fileName), "r")
+        pfd?.fd ?: -1
+    } catch (e: FileNotFoundException) {
+        Log.e(TAG, "Failed to get fd: $e")
+        -1
+    }
+
+    @Suppress("unused")
+    fun closeFd() {
+        Log.v(TAG, "Close fd")
+        pfd?.close()
+        pfd = null
+    }
+
+    @Suppress("unused")
+    fun getFileName(uri: String): String {
+        contentResolver.query(Uri.parse(uri), arrayOf(OpenableColumns.DISPLAY_NAME), null, null, null)?.use { cursor ->
+            if (cursor.moveToFirst() && !cursor.isNull(0)) {
+                return cursor.getString(0)
+            }
+        }
+        return ""
+    }
+
     @Suppress("unused")
     @SuppressLint("UnsupportedChromeOsCameraSystemFeature")
     fun isCameraPresent(): Boolean = applicationContext.packageManager.hasSystemFeature(PackageManager.FEATURE_CAMERA)

client/platforms/android/android_controller.cpp

@@ -163,11 +163,7 @@ QString AndroidController::openFile(const QString &filter)
     QString fileName;
     connect(this, &AndroidController::fileOpened, this,
             [&fileName, &wait](const QString &uri) {
-                qDebug() << "Android event: file opened; uri:" << uri;
-                fileName = QQmlFile::urlToLocalFileOrQrc(uri);
-                qDebug() << "Qt url to local file:" << fileName;
-                // if qt failed, try using just uri
-                if (fileName.isEmpty()) fileName = uri;
+                fileName = uri;
                 wait.quit();
             },
             static_cast<Qt::ConnectionType>(Qt::QueuedConnection | Qt::SingleShotConnection));
@@ -177,6 +173,25 @@ QString AndroidController::openFile(const QString &filter)
     return fileName;
 }
 
+int AndroidController::getFd(const QString &fileName)
+{
+    return callActivityMethod<jint>("getFd", "(Ljava/lang/String;)I",
+                                    QJniObject::fromString(fileName).object<jstring>());
+}
+
+void AndroidController::closeFd()
+{
+    callActivityMethod("closeFd", "()V");
+}
+
+QString AndroidController::getFileName(const QString &uri)
+{
+    auto fileName = callActivityMethod<jstring, jstring>("getFileName", "(Ljava/lang/String;)Ljava/lang/String;",
+                                                         QJniObject::fromString(uri).object<jstring>());
+    QJniEnvironment env;
+    return AndroidUtils::convertJString(env.jniEnv(), fileName.object<jstring>());
+}
+
 bool AndroidController::isCameraPresent()
 {
     return callActivityMethod<jboolean>("isCameraPresent", "()Z");

client/platforms/android/android_controller.h

@@ -34,6 +34,9 @@ public:
     void resetLastServer(int serverIndex);
     void saveFile(const QString &fileName, const QString &data);
     QString openFile(const QString &filter);
+    int getFd(const QString &fileName);
+    void closeFd();
+    QString getFileName(const QString &uri);
     bool isCameraPresent();
     bool isOnTv();
     void startQrReaderActivity();

client/ui/controllers/importController.cpp

@@ -9,6 +9,7 @@
 
 #include "core/errorstrings.h"
 #include "core/serialization/serialization.h"
+#include "systemController.h"
 #include "utilities.h"
 
 #ifdef Q_OS_ANDROID
@@ -76,17 +77,18 @@ ImportController::ImportController(const QSharedPointer<ServersModel> &serversMo
 
 bool ImportController::extractConfigFromFile(const QString &fileName)
 {
-    QFile file(fileName);
-
-    if (file.open(QIODevice::ReadOnly)) {
-        QString data = file.readAll();
-
-        m_configFileName = QFileInfo(file.fileName()).fileName();
-        return extractConfigFromData(data);
+    QString data;
+    if (!SystemController::readFile(fileName, &data)) {
+        emit importErrorOccurred(ErrorCode::ImportOpenConfigError, false);
+        return false;
     }
-
-    emit importErrorOccurred(ErrorCode::ImportOpenConfigError, false);
-    return false;
+    m_configFileName = QFileInfo(QFile(fileName).fileName()).fileName();
+#ifdef Q_OS_ANDROID
+    if (m_configFileName.isEmpty()) {
+        m_configFileName = AndroidController::instance()->getFileName(fileName);
+    }
+#endif
+    return extractConfigFromData(data);
 }
 
 bool ImportController::extractConfigFromData(QString data)

client/ui/controllers/settingsController.cpp

@@ -131,12 +131,8 @@ void SettingsController::backupAppConfig(const QString &fileName)
 
 void SettingsController::restoreAppConfig(const QString &fileName)
 {
-    QFile file(fileName);
-
-    file.open(QIODevice::ReadOnly);
-
-    QByteArray data = file.readAll();
-
+    QByteArray data;
+    SystemController::readFile(fileName, &data);
     restoreAppConfigFromData(data);
 }
 

client/ui/controllers/sitesController.cpp

@@ -82,14 +82,12 @@ void SitesController::removeSite(int index)
 
 void SitesController::importSites(const QString &fileName, bool replaceExisting)
 {
-    QFile file(fileName);
-
-    if (!file.open(QIODevice::ReadOnly)) {
+    QByteArray jsonData;
+    if (!SystemController::readFile(fileName, &jsonData)) {
         emit errorOccurred(tr("Can't open file: %1").arg(fileName));
         return;
     }
 
-    QByteArray jsonData = file.readAll();
     QJsonDocument jsonDocument = QJsonDocument::fromJson(jsonData);
     if (jsonDocument.isNull()) {
         emit errorOccurred(tr("Failed to parse JSON data from file: %1").arg(fileName));

client/ui/controllers/systemController.cpp

@@ -24,7 +24,7 @@ SystemController::SystemController(const std::shared_ptr<Settings> &settings, QO
 {
 }
 
-void SystemController::saveFile(QString fileName, const QString &data)
+void SystemController::saveFile(const QString &fileName, const QString &data)
 {
 #if defined Q_OS_ANDROID
     AndroidController::instance()->saveFile(fileName, data);
@@ -62,6 +62,31 @@ void SystemController::saveFile(QString fileName, const QString &data)
 #endif
 }
 
+bool SystemController::readFile(const QString &fileName, QByteArray *data)
+{
+#ifdef Q_OS_ANDROID
+    int fd = AndroidController::instance()->getFd(fileName);
+    if (fd == -1) return false;
+    QFile file;
+    if(!file.open(fd, QIODevice::ReadOnly)) return false;
+    data->assign(file.readAll());
+    AndroidController::instance()->closeFd();
+#else
+    QFile file(fileName);
+    if (!file.open(QIODevice::ReadOnly)) return false;
+    data->assign(file.readAll());
+#endif
+    return true;
+}
+
+bool SystemController::readFile(const QString &fileName, QString *data)
+{
+    QByteArray byteArray;
+    if(!readFile(fileName, &byteArray)) return false;
+    data->assign(byteArray);
+    return true;
+}
+
 QString SystemController::getFileName(const QString &acceptLabel, const QString &nameFilter,
                                       const QString &selectedFile, const bool isSaveMode, const QString &defaultSuffix)
 {

client/ui/controllers/systemController.h

@@ -11,7 +11,9 @@ class SystemController : public QObject
 public:
     explicit SystemController(const std::shared_ptr<Settings> &setting, QObject *parent = nullptr);
 
-    static void saveFile(QString fileName, const QString &data);
+    static void saveFile(const QString &fileName, const QString &data);
+    static bool readFile(const QString &fileName, QByteArray *data);
+    static bool readFile(const QString &fileName, QString *data);
 
 public slots:
     QString getFileName(const QString &acceptLabel, const QString &nameFilter, const QString &selectedFile = "",