Prepare Wowlet codebase for an Android app

src/appcontext.cpp

@@ -30,77 +30,69 @@ AppContext::AppContext(QCommandLineParser *cmdargs) {
     this->cmdargs = cmdargs;
     AppContext::isQML = false;
 
+    // OS & env
 #if defined(Q_OS_MAC)
+    this->isMac = true;
     this->isTorSocks = qgetenv("DYLD_INSERT_LIBRARIES").indexOf("libtorsocks") >= 0;
+#elif __ANDROID__
+    this->isAndroid = true;
 #elif defined(Q_OS_LINUX)
+    this->isLinux = true;
     this->isTorSocks = qgetenv("LD_PRELOAD").indexOf("libtorsocks") >= 0;
+    this->isTails = TailsOS::detect();
+    this->isWhonix = WhonixOS::detect();
 #elif defined(Q_OS_WIN)
+    this->isWindows = true;
     this->isTorSocks = false;
 #endif
-
-    this->isTails = TailsOS::detect();
-    this->isWhonix = WhonixOS::detect();
+    this->androidDebug = cmdargs->isSet("android-debug");
 
     // Paths
+    this->pathGenericData = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation);
     this->configRoot = QDir::homePath();
-    if (isTails) { // #if defined(PORTABLE)
-        QString portablePath = []{
-            QString appImagePath = qgetenv("APPIMAGE");
-            if (appImagePath.isEmpty()) {
-                qDebug() << "Not an appimage, using currentPath()";
-                return QDir::currentPath() + "/.wowlet";
-            }
-
-            QFileInfo appImageDir(appImagePath);
-            return appImageDir.absoluteDir().path() + "/.wowlet";
-        }();
-
-
-        if (QDir().mkpath(portablePath)) {
-            this->configRoot = portablePath;
-        } else {
-            qCritical() << "Unable to create portable directory: " << portablePath;
-        }
-    }
-
     this->accountName = Utils::getUnixAccountName();
     this->homeDir = QDir::homePath();
 
+    this->configDirectory = QString("%1/.config/wowlet/").arg(this->configRoot);
+    this->configDirectoryVR = QString("%1%2").arg(this->configDirectory, "vr");
+
+    if (isTails) this->setupPathsTails();
+
     QString walletDir = config()->get(Config::walletDirectory).toString();
     if(walletDir.isEmpty()) {
-#if defined(Q_OS_LINUX) or defined(Q_OS_MAC)
-        this->defaultWalletDir = QString("%1/Wownero/wallets").arg(this->configRoot);
-        this->defaultWalletDirRoot = QString("%1/Wownero").arg(this->configRoot);
-#elif defined(Q_OS_WIN)
-        this->defaultWalletDir = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) + "/Wownero";
-        this->defaultWalletDirRoot = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
-#endif
+        if (isAndroid && !androidDebug) setupPathsAndroid();
+        else if (isWindows) setupPathsWindows();
+        else if (isLinux || isMac) setupPathsUnix();
     } else {
         this->defaultWalletDir = walletDir;
         this->defaultWalletDirRoot = walletDir;
     }
 
+#ifdef __ANDROID__
+    // can haz disk I/O?
+    QVector<QString> perms = {
+        "android.permission.WRITE_EXTERNAL_STORAGE",
+        "android.permission.READ_EXTERNAL_STORAGE"
+    };
+    Utils::androidAskPermissions(perms);
+#endif
+
     // Create wallet dirs
+    qDebug() << "creating " << defaultWalletDir;
     if (!QDir().mkpath(defaultWalletDir))
         qCritical() << "Unable to create dir: " << defaultWalletDir;
 
-    this->configDirectory = QString("%1/.config/wowlet/").arg(this->configRoot);
-#if defined(Q_OS_UNIX)
-    if(!this->configDirectory.endsWith('/'))
-        this->configDirectory = QString("%1/").arg(this->configDirectory);
-#endif
-    this->configDirectoryVR = QString("%1%2").arg(this->configDirectory, "vr");
-
     // Create some directories
     createConfigDirectory(this->configDirectory);
-
-//    if(this->cmdargs->isSet("stagenet"))
-//        this->networkType = NetworkType::STAGENET;
-//    else if(this->cmdargs->isSet("testnet"))
-//        this->networkType = NetworkType::TESTNET;
-//    else
     this->networkType = NetworkType::MAINNET;
 
+    qDebug() << "configRoot: " << this->configRoot;
+    qDebug() << "homeDir: " << this->homeDir;
+    qDebug() << "customWalletDir: " << walletDir;
+    qDebug() << "defaultWalletDir: " << this->defaultWalletDir;
+    qDebug() << "defaultWalletDirRoot: " << this->defaultWalletDirRoot;
+    qDebug() << "configDirectory: " << this->configDirectory;
+
 //    auto nodeSourceUInt = config()->get(Config::nodeSource).toUInt();
 //    AppContext::nodeSource = static_cast<NodeSource>(nodeSourceUInt);
     this->nodes = new Nodes(this, this->networkClearnet);
@@ -558,12 +550,14 @@ void AppContext::createConfigDirectory(const QString &dir) {
         }
     }
 
+#ifdef HAS_OPENVR
     auto config_dir_vr = QString("%1%2").arg(dir, "vr");
     if(!Utils::dirExists(config_dir_vr)) {
         qDebug() << QString("Creating directory: %1").arg(config_dir_vr);
         if (!QDir().mkpath(config_dir_vr))
             throw std::runtime_error("Could not create directory " + config_dir_vr.toStdString());
     }
+#endif
 }
 
 void AppContext::createWalletWithoutSpecifyingSeed(const QString &name, const QString &password) {
@@ -949,3 +943,38 @@ void AppContext::refreshModels() {
     this->currentWallet->coins()->refresh(this->currentWallet->currentSubaddressAccount());
     // Todo: set timer for refreshes
 }
+
+void AppContext::setupPathsUnix() {
+    this->defaultWalletDir = QString("%1/Wownero/wallets").arg(this->configRoot);
+    this->defaultWalletDirRoot = QString("%1/Wownero").arg(this->configRoot);
+}
+
+void AppContext::setupPathsWindows() {
+    this->defaultWalletDir = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) + "/Wownero";
+    this->defaultWalletDirRoot = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
+}
+
+void AppContext::setupPathsAndroid() {
+    this->defaultWalletDir = QString("%1/Wownero/wallets").arg(this->pathGenericData);
+    this->defaultWalletDirRoot = QString("%1/Wownero").arg(this->pathGenericData);
+}
+
+void AppContext::setupPathsTails() {
+    QString portablePath = []{
+        QString appImagePath = qgetenv("APPIMAGE");
+        if (appImagePath.isEmpty()) {
+            qDebug() << "Not an appimage, using currentPath()";
+            return QDir::currentPath() + "/.wowlet";
+        }
+
+        QFileInfo appImageDir(appImagePath);
+        return appImageDir.absoluteDir().path() + "/.wowlet";
+    }();
+
+    if (QDir().mkpath(portablePath)) {
+        this->configRoot = portablePath;
+    } else {
+        qCritical() << "Unable to create portable directory: " << portablePath;
+    }
+}
+

src/appcontext.h

@@ -39,7 +39,12 @@ public:
     ~AppContext() override;
     bool isTails = false;
     bool isWhonix = false;
+    bool isAndroid = false;
+    bool isLinux = false;
+    bool isMac = false;
+    bool isWindows = false;
     bool isDebug = false;
+    bool androidDebug = false;
 
     // Donation config
     const QString donationAddress = "Wo3MWeKwtA918DU4c69hVSNgejdWFCRCuWjShRY66mJkU2Hv58eygJWDJS1MNa2Ge5M1WjUkGHuLqHkweDxwZZU42d16v94mP";
@@ -50,6 +55,7 @@ public:
 
     QString coinName = "wownero";
     bool isTorSocks = false;
+    QString pathGenericData;
     QString homeDir;
     QString accountName;
     QString configRoot;
@@ -215,6 +221,11 @@ private:
     WalletKeysFilesModel *m_walletKeysFilesModel;
     const int m_donationBoundary = 15;
     QTimer m_storeTimer;
+
+    void setupPathsUnix();
+    void setupPathsWindows();
+    void setupPathsAndroid();
+    void setupPathsTails();
 };
 
 #endif //WOWLET_APPCONTEXT_H

src/libwalletqt/Wallet.cpp

@@ -1,6 +1,8 @@
 // SPDX-License-Identifier: BSD-3-Clause
 // Copyright (c) 2014-2021, The Monero Project.
 
+#include <thread>
+
 #include "Wallet.h"
 
 #include "TransactionHistory.h"

src/main.cpp

@@ -14,6 +14,12 @@
 #include "vr/main.h"
 #endif
 
+#ifdef HAS_ANDROID_DEBUG
+#include "mobile/main.h"
+#elif HAS_ANDROID
+#include "mobile/main.h"
+#endif
+
 #if defined(Q_OS_WIN)
 #include <windows.h>
 #endif
@@ -44,6 +50,10 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {
         argv_ << QString::fromStdString(argv[i]);
     }
 
+    QCoreApplication::setApplicationName("wowlet");
+    QCoreApplication::setOrganizationDomain("wownero.org");
+    QCoreApplication::setOrganizationName("wownero.org");
+
     QCommandLineParser parser;
     parser.setApplicationDescription("wowlet");
     parser.addHelpOption();
@@ -91,9 +101,12 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {
     QCommandLineOption openVROption(QStringList() << "openvr", "Start Wowlet OpenVR");
     parser.addOption(openVROption);
 
-    QCommandLineOption openVRDebugOption(QStringList() << "openvr-debug", "Start the Wowlet VR interface without initializing OpenVR - for debugging purposes.");
+    QCommandLineOption openVRDebugOption(QStringList() << "openvr-debug", "Start the Wowlet VR interface without initializing OpenVR - for debugging purposes. Requires -DOPENVR=ON CMake definition.");
     parser.addOption(openVRDebugOption);
 
+    QCommandLineOption androidDebugOption(QStringList() << "android-debug", "Start the Android interface without actually running on Android - for debugging purposes. Requires -DANDROID_DEBUG=ON CMake definition.");
+    parser.addOption(androidDebugOption);
+
     auto parsed = parser.parse(argv_);
     if(!parsed) {
         qCritical() << parser.errorText();
@@ -111,13 +124,29 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {
     bool backgroundAddressEnabled = parser.isSet(backgroundOption);
     bool openVREnabled = parser.isSet(openVROption);
     bool cliMode = exportContacts || exportTxHistory || backgroundAddressEnabled;
-
+    bool androidDebug = parser.isSet(androidDebugOption);
+    bool android = false;
+#ifdef __ANDROID__
+    android = true;
+#endif
     qRegisterMetaType<QVector<QString>>();
 
 #ifdef HAS_QML
     qputenv("QML_DISABLE_DISK_CACHE", "1");
 #endif
 
+    if(android || androidDebug) {
+#ifndef HAS_QML
+        qCritical() << "Wowlet compiled without QML support. Try -DQML=ON";
+        return 1;
+#endif
+        QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+        QGuiApplication mobile_app(argc, argv);
+        auto *ctx = new AppContext(&parser);
+        auto *mobile = new mobile::Mobile(ctx, &parser, &mobile_app);
+        return mobile_app.exec();
+    }
+
     if(openVREnabled) {
 #ifdef HAS_OPENVR
         QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
@@ -138,9 +167,6 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {
     if(cliMode) {
         auto *ctx = new AppContext(&parser);
         QCoreApplication cli_app(argc, argv);
-        QCoreApplication::setApplicationName("wowlet");
-        QCoreApplication::setOrganizationDomain("wownero.org");
-        QCoreApplication::setOrganizationName("wownero.org");
 
         ctx->applicationPath = QString(argv[0]);
         ctx->isDebug = debugMode;
@@ -191,10 +217,6 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {
 
     QApplication app(argc, argv);
 
-    QApplication::setApplicationName("wowlet");
-    QApplication::setOrganizationDomain("wownero.org");
-    QApplication::setOrganizationName("wownero.org");
-
     parser.process(app); // Parse again for --help and --version
 
     if(!quiet) {
@@ -204,8 +226,10 @@ if (AttachConsole(ATTACH_PARENT_PROCESS)) {
         if (stagenet) info["Mode"] = "Stagenet";
         else if (testnet) info["Mode"] = "Testnet";
         else info["Mode"] = "Mainnet";
+#ifndef QT_NO_SSL
         info["SSL"] = QSslSocket::sslLibraryVersionString();
         info["SSL build"] = QSslSocket::sslLibraryBuildVersionString();
+#endif
         for (const auto &k: info.keys())
             qWarning().nospace().noquote() << QString("%1: %2").arg(k).arg(info[k]);
     }

src/utils/utils.cpp

@@ -256,11 +256,14 @@ QStandardItem *Utils::qStandardItem(const QString& text, QFont &font) {
 }
 
 QString Utils::getUnixAccountName() {
+#ifdef __ANDROID__
+    return "";
+#endif
     QString accountName = qgetenv("USER"); // mac/linux
     if (accountName.isEmpty())
         accountName = qgetenv("USERNAME"); // Windows
     if (accountName.isEmpty())
-        throw std::runtime_error("Could derive system account name from env vars: USER or USERNAME");
+        throw std::runtime_error("Could not derive system account name from env vars: USER or USERNAME");
     return accountName;
 }
 
@@ -455,3 +458,26 @@ QTextCharFormat Utils::addressTextFormat(const SubaddressIndex &index) {
     }
     return QTextCharFormat();
 }
+
+#ifdef __ANDROID__
+bool Utils::androidAskPermissions(const QVector<QString> &permissions) {
+    bool rtn = true;
+    if(QtAndroid::androidSdkVersion() >= 23) {
+        for(const QString &permission : permissions) {
+            auto result = QtAndroid::checkPermission(permission);
+            if(result != QtAndroid::PermissionResult::Granted) {
+                auto resultHash = QtAndroid::requestPermissionsSync(QStringList({permission}));
+                if(resultHash[permission] != QtAndroid::PermissionResult::Granted) {
+                    qDebug() << "Fail to get permission" << permission;
+                    rtn = false;
+                } else {
+                    qDebug() << "Permission" << permission << "granted!";
+                }
+            } else {
+                qDebug() << "Permission" << permission << "already granted!";
+            }
+        }
+    }
+    return rtn;
+}
+#endif

src/utils/utils.h

@@ -8,6 +8,9 @@
 #include <QStandardItemModel>
 #include <QApplication>
 #include <QTextCharFormat>
+#ifdef __ANDROID__
+#include <QtAndroid>
+#endif
 
 #include <monero_seed/monero_seed.hpp>
 
@@ -80,10 +83,13 @@ public:
     static QTextCharFormat addressTextFormat(const SubaddressIndex &index);
 
     template<typename QEnum>
-    static QString QtEnumToString (const QEnum value)
-    {
+    static QString QtEnumToString (const QEnum value) {
         return QString::fromStdString(std::string(QMetaEnum::fromType<QEnum>().valueToKey(value)));
     }
+
+#ifdef __ANDROID__
+    static bool androidAskPermissions(const QVector<QString> &permissions);
+#endif
 };
 
 class AppContext;  // forward declaration