Added additional UserServices functionality

KomplexHubPlugin/CMakeLists.txt

@@ -56,9 +56,12 @@ qt_add_qml_module(
       common/shaderpack.h
       packcompiler.h
       packcompiler.cpp
-      SOURCES common/userservices.h
-      SOURCES common/userservices.cpp
-      SOURCES common/qwallet.h common/qwallet.cpp
+      common/userservices.h
+      common/userservices.cpp
+      common/qwallet.h
+      common/qwallet.cpp
+      usermodel.h 
+      usermodel.cpp
 )
 
 target_compile_definitions(

KomplexHubPlugin/common/komplex_global.h

@@ -69,14 +69,9 @@ inline const QString KOMPLEX_ENDPOINT_USER_AUTH               = QStringLiteral("
 
 inline const qsizetype nullsize                               = std::numeric_limits<qsizetype>::min();
 inline const std::chrono::milliseconds KOMPLEX_RATE_LIMIT(500);
-inline const QString KOMPLEX_KEYCHAIN_PASSWORD_KEY = QStringLiteral
+inline const QString KOMPLEX_KEYCHAIN_SERVICE_NAME = QStringLiteral
 (
-    "com.digitalartifex.komplex.keychain.password"
-);
-
-inline const QString KOMPLEX_KEYCHAIN_TOKEN_KEY = QStringLiteral
-(
-    "com.digitalartifex.komplex.keychain.token"
+    "com.digitalartifex.komplex"
 );
 
 #endif // KOMPLEX_GLOBAL_H

KomplexHubPlugin/common/qwallet.h

@@ -30,7 +30,7 @@
  * @brief The QWallet class
  * QWallet is a QFuture wrapper for QtKeychain to make interaction with the keychain easier
  */
-class KOMPLEX_EXPORT QWallet : QObject
+class KOMPLEX_EXPORT QWallet : public QObject
 {
     Q_OBJECT
 

KomplexHubPlugin/common/userservices.cpp

@@ -1,5 +1,11 @@
 #include "userservices.h"
+#include "common/komplex_global.h"
 #include "coreservices.h"
+#include <QtConcurrent/qtconcurrentrun.h>
+#include <exception>
+#include <qcontainerfwd.h>
+#include <qstandardpaths.h>
+#include <qstringview.h>
 
 UserServices::UserServices(QObject *parent) : QObject(parent)
 {
@@ -8,6 +14,10 @@ UserServices::UserServices(QObject *parent) : QObject(parent)
 
 UserServices::~UserServices()
 {
+    if(m_wallet)
+    {
+        m_wallet->deleteLater();
+    }
 }
 
 auto UserServices::setUserCredentials(const UserCredentials &credentials) -> void
@@ -24,12 +34,135 @@ auto UserServices::errorString() const -> const QString &
 auto UserServices::setErrorString(const QString &errorString) -> void
 {
     if (m_errorString == errorString)
+    {
         return;
+    }
+
     m_errorString = errorString;
     emit errorStringChanged();
 }
 
-auto UserServices::instance() const -> QWeakPointer<UserServices>
+auto UserServices::savePassword(const QString &username, const QByteArray &password) -> void
+{
+    QFuture saveAttempt = m_wallet->write
+    (
+        KOMPLEX_KEYCHAIN_SERVICE_NAME,
+        username,
+        password
+    );
+}
+
+auto UserServices::readPassword(const QString &username) -> QFuture<QByteArray>
+{
+    return m_wallet->read(KOMPLEX_KEYCHAIN_SERVICE_NAME, username);
+}
+
+auto UserServices::readToken(const QString &username) -> QFuture<UserCredentials>
+{
+    return QtConcurrent::run
+    (
+        [this, username] () -> UserCredentials
+        {
+            UserCredentials credentials;
+
+            QFuture readAttempt = m_wallet->read
+            (
+                KOMPLEX_KEYCHAIN_SERVICE_NAME, 
+                username + QStringLiteral("_token")
+            );
+
+            QString _username = username;
+
+            readAttempt
+                .then
+                (
+                    [this, &credentials, _username] (const QByteArray &value) -> void
+                    {
+                        auto parts = value.split(PART_SEPARATOR);
+                        QDateTime expiry;
+
+                        if(parts.count() == 1)
+                        {
+                            setErrorString(QStringLiteral("Token malformed"));
+                            throw std::exception();
+                        }
+
+                        if(parts[0].length() != sizeof(qint64))
+                        {
+                            setErrorString(QStringLiteral("Token expiry malformed"));
+                            throw std::exception();
+                        }
+
+                        QByteArray numericData = parts[0];
+                        qint64 numericConversion = 0;
+
+                        for(int i = 0; i < sizeof(qint64); ++i)
+                        {
+                            numericConversion |= 
+                            (
+                                static_cast<qint64>
+                                (
+                                    (
+                                        static_cast<qint8>(numericData[i]) &
+                                        0xFF
+                                    )
+                                    << (i * sizeof(qint8))
+                                )
+                            );
+                        }
+
+                        expiry = QDateTime::fromMSecsSinceEpoch(numericConversion);
+
+                        if(parts[1].isEmpty() && parts.count() == 3)
+                        {
+                            parts[1] = parts[2];
+                        }
+
+                        credentials = UserCredentials
+                        {
+                            .username = _username.toUtf8(),
+                            .sessionToken = parts[1],
+                            .expiry = expiry
+                        };
+                    }
+                )
+                .onFailed
+                (
+                    [this] () -> void
+                    {
+                        setErrorString(m_wallet->errorString());
+                        throw std::exception();
+                    }
+                );
+
+            readAttempt.waitForFinished();
+
+            return credentials;
+        }
+    );
+}
+
+auto UserServices::saveToken(const QString &username, const QByteArray &token, const QDateTime &expiry) -> void
+{
+    QByteArray data;
+    qint64 numericData = expiry.toMSecsSinceEpoch();
+
+    for(int i = 0; i < sizeof(qint64); ++i)
+    {
+        data[i] = 0xFF & static_cast<qint8>(numericData >> (i * sizeof(qint8)));
+    }
+
+    data += PART_SEPARATOR + token;
+
+    QFuture saveAttempt = m_wallet->write
+    (
+        KOMPLEX_KEYCHAIN_SERVICE_NAME,
+        username + QString("_token"),
+        data
+    );
+}
+
+auto UserServices::instance() -> QWeakPointer<UserServices>
 {
     if(!s_pointer)
     {
@@ -53,16 +186,19 @@ auto UserServices::login(const QString &username, const QByteArray &password) ->
 {
     return QtConcurrent::run
     (
-        [this, username = std::move(username), password = std::move(password)] () -> UserCredentials
+        [this, username, password] () -> UserCredentials
         {
             QSharedPointer<QNetworkAccessManager> manager = CoreServices::networkAccessManager().toStrongRef();
 
             if(!manager)
             {
                 Q_EMIT loginFailed();
-                return {};
+                setErrorString(QStringLiteral("Network manager reference deleted"));
+                throw std::exception();
             }
 
+            saveDefaultUsername(username);
+
             QNetworkRequest request
             (
                 QUrl
@@ -139,10 +275,77 @@ auto UserServices::login(const QString &username, const QByteArray &password) ->
                 .expiry = QDateTime::currentDateTime()
             };
 
+            savePassword(username, password);
+            saveToken(username, credentials.sessionToken, credentials.expiry);
             setUserCredentials(credentials);
 
             Q_EMIT loginComplete();
             return credentials;
         }
     );
+}
+
+auto UserServices::saveDefaultUsername(const QString &username) -> void
+{
+    QDir configDirectory(QStandardPaths::writableLocation(QStandardPaths::AppConfigLocation));
+
+    if(!configDirectory.exists())
+    {
+        if(!configDirectory.mkpath(configDirectory.absolutePath()))
+        {
+            setErrorString(QStringLiteral("Could not make config directory"));
+            throw std::exception();
+        }
+    }
+
+    QFile usernameFile(configDirectory.absoluteFilePath(QStringLiteral("uname")));
+
+    if(!usernameFile.open(QFile::ReadWrite | QFile::Truncate))
+    {
+        setErrorString(QStringLiteral("Could not open uname file"));
+        throw std::exception();
+    }
+
+    QByteArray data = username.toUtf8().toBase64();
+
+    if(usernameFile.write(data) != data.length())
+    {
+        setErrorString(QStringLiteral("Could not write uname file"));
+    }
+
+    usernameFile.close();
+}
+
+auto UserServices::defaultUsername() -> QFuture<QString>
+{
+    return QtConcurrent::run
+    (
+        [this] () -> QString
+        {        
+            QDir configDirectory(QStandardPaths::writableLocation(QStandardPaths::AppConfigLocation));
+
+            if(!configDirectory.exists())
+            {
+                if(!configDirectory.mkpath(configDirectory.absolutePath()))
+                {
+                    setErrorString(QStringLiteral("Could not make config directory"));
+                    throw std::exception();
+                }
+            }
+
+            QFile usernameFile(configDirectory.absoluteFilePath(QStringLiteral("uname")));
+
+            if(!usernameFile.open(QFile::ReadOnly))
+            {
+                setErrorString(QStringLiteral("Could not open uname file"));
+                throw std::exception();
+            }
+
+            QByteArray data = QByteArray::fromBase64(usernameFile.readAll());
+
+            usernameFile.close();
+
+            return QString(data);
+        }
+    );
 }

KomplexHubPlugin/common/userservices.h

@@ -8,6 +8,10 @@
 #include <QJsonDocument>
 #include <QJsonArray>
 #include <QJsonObject>
+#include <QDir>
+#include <QFile>
+#include <QStandardPaths>
+
 #include "komplex_global.h"
 #include "qwallet.h"
 
@@ -32,23 +36,34 @@ struct UserCredentials
                !sessionToken.isEmpty() && sessionToken.isValidUtf8();
     }
 };
+Q_DECLARE_METATYPE(UserCredentials)
 
 class KOMPLEX_EXPORT UserServices : public QObject
 {
     Q_OBJECT
 
 public:
-    auto instance() const -> QWeakPointer<UserServices>;
+    static auto instance() -> QWeakPointer<UserServices>;
     static auto userCredentials() -> const UserCredentials &;
+
+    [[nodiscard]]
     auto login(const QString &username, const QByteArray &password) -> QFuture<UserCredentials>;
 
     auto errorString() const -> const QString &;
 
+    [[nodiscard]]
+    auto readPassword(const QString &username) -> QFuture<QByteArray>;
+
+    [[nodiscard]]
+    auto readToken(const QString &username) -> QFuture<UserCredentials>;
+
+    [[nodiscard]]
+    auto defaultUsername() -> QFuture<QString>;
+
 signals:
     auto loginComplete() -> void;
     auto loginFailed() -> void;
     auto userCredentialsChanged() -> void;
-
     auto errorStringChanged() -> void;
 
 private:
@@ -60,10 +75,17 @@ private:
 
     auto setUserCredentials(const UserCredentials &credentials) -> void;
     auto setErrorString(const QString &errorString) -> void;
+    auto savePassword(const QString &username, const QByteArray &password) -> void;
+    auto saveToken(const QString &username, const QByteArray &token, const QDateTime &expiry) -> void;
+    auto saveDefaultUsername(const QString &username) -> void;
 
     QWallet *m_wallet = nullptr;
     QString m_errorString;
     inline static UserCredentials s_userCredentials;
+
+    inline const static char PART_SEPARATOR = static_cast<char>('\0x1f');
+
     Q_PROPERTY(UserCredentials userCredentials READ userCredentials NOTIFY userCredentialsChanged FINAL)
     Q_PROPERTY(QString errorString READ errorString WRITE setErrorString NOTIFY errorStringChanged FINAL)
-};
+};
+Q_DECLARE_METATYPE(UserServices)

KomplexHubPlugin/usermodel.cpp

@@ -0,0 +1,288 @@
+#include "usermodel.h"
+#include "common/userservices.h"
+#include <QtConcurrent/qtconcurrentrun.h>
+#include <qdatetime.h>
+#include <qfuture.h>
+#include <qobjectdefs.h>
+#include <qstringview.h>
+
+UserModel::UserModel(QObject *parent)
+    : QObject{parent}
+{
+    m_stateResetTimer = new QTimer(this);
+    m_stateResetTimer->setInterval(1000);
+    m_stateResetTimer->setSingleShot(true);
+
+    QObject::connect
+    (
+        m_stateResetTimer,
+        &QTimer::timeout,
+        this,
+        &UserModel::resetState
+    );
+
+    setState(Busy);
+
+    QSharedPointer<UserServices> service = UserServices::instance();
+
+    if(service == nullptr)
+    {
+        setErrorString(QStringLiteral("UserServices object deleted"));
+        setState(LoginFailure);
+        return;
+    }
+
+    QFuture<QString> usernameFuture = service->defaultUsername();
+
+    usernameFuture
+        .then
+        (
+            [this] (const QString username)
+            {
+                login(username);
+            }
+        )
+        .onCanceled
+        (
+            [this] () -> void
+            {
+                reset();
+            }
+        )
+        .onFailed
+        (
+            [this] () -> void
+            {
+                reset();
+            }
+        );
+
+    service.clear();
+}
+
+UserModel::~UserModel()
+{
+    if(m_stateResetTimer != nullptr)
+    {
+        m_stateResetTimer->deleteLater();
+    }
+}
+
+auto UserModel::login() -> void
+{
+    QFuture aether = QtConcurrent::run
+    (
+        [this] () -> void
+        {
+            QMutexLocker locker(&m_loginMutex);
+            setState(LoggingIn);
+
+            QSharedPointer<UserServices> service = UserServices::instance();
+
+            if(service == nullptr)
+            {
+                setErrorString(QStringLiteral("UserServices object deleted"));
+                setState(LoginFailure);
+                return;
+            }
+
+            m_loginAttempt = service->login(username(), password().toUtf8());
+
+            m_loginAttempt
+                .then
+                (
+                    [this] (UserCredentials credentials) -> void
+                    {
+                        setState(LoggedIn);
+                    }
+                )
+                .onCanceled
+                (
+                    [this] () -> void
+                    {
+                        setState(LoginFailure);
+                    }
+                )
+                .onFailed
+                (
+                    [this] () -> void
+                    {
+                        setState(LoginCancelled);
+                    }
+                );
+        }
+    );
+}
+
+auto UserModel::login(const QString username) -> void
+{
+    if(username == m_username)
+    {
+        return;
+    }
+
+    m_username = username;
+    Q_EMIT usernameChanged();
+
+    QSharedPointer<UserServices> service = UserServices::instance();
+
+    if(service == nullptr)
+    {
+        setErrorString(QStringLiteral("UserServices object deleted"));
+        setState(LoggedOut);
+        return;
+    }
+
+    QFuture<UserCredentials> tokenRead = service->readToken(username);
+
+    tokenRead
+        .then
+        (
+            [this] (const UserCredentials credentials) -> void
+            {
+                if(QDateTime::currentDateTime() <= credentials.expiry)
+                {
+                    setState(LoggedIn);
+                    return;
+                }
+
+                QSharedPointer<UserServices> service = UserServices::instance();
+
+                if(service == nullptr)
+                {
+                    setErrorString(QStringLiteral("UserServices object deleted"));
+                    setState(LoggedOut);
+                    return;
+                }
+
+                QFuture<QByteArray> passwordRead = service->readPassword(credentials.username);
+
+                passwordRead
+                    .then
+                    (
+                        [this] (const QByteArray password)
+                        {
+                            if(password.isEmpty())
+                            {
+                                setState(LoggedOut);
+                                return;
+                            }
+
+                            setPassword(password);
+                        }
+                    );
+
+                service.clear();
+            }
+        );
+
+    service.clear();
+}
+
+auto UserModel::cancelLogin() -> void
+{
+    QFuture aether = QtConcurrent::run
+    (
+        [this] () -> void
+        {
+            QMutexLocker locker(&m_loginMutex);
+
+            if(m_loginAttempt.isRunning())
+            {
+                m_loginAttempt.cancel();
+            }
+        }
+    );
+}
+
+auto UserModel::reset() -> void
+{
+    resetState();
+    setUsername({});
+    setPassword({});
+}
+
+auto UserModel::setUsername(const QString &username) -> void
+{
+    if(username == m_username)
+    {
+        return;
+    }
+
+    m_username = username;
+    Q_EMIT usernameChanged();
+
+    if(!password().isEmpty())
+    {
+        return;
+    }
+
+    setState(Busy);
+
+    QSharedPointer<UserServices> service = UserServices::instance();
+
+    if(service == nullptr)
+    {
+        return;
+    }
+
+    QFuture<QByteArray> passwordRead = service->readPassword(username);
+    passwordRead
+        .then
+        (
+            [this] (const QByteArray password) -> void
+            {
+                setPassword(password);
+            }
+        );
+}
+
+auto UserModel::setPassword(const QString &password) -> void
+{
+    if(password == m_password)
+    {
+        return;
+    }
+
+    m_password = password;
+    Q_EMIT passwordChanged();
+}
+
+auto UserModel::resetState() -> void
+{
+    setState(Idle);
+}
+
+auto UserModel::setState(State state) -> void
+{
+    if(state == m_state)
+    {
+        return;
+    }
+
+    switch(state)
+    {
+    case LoginFailure:
+    case LoggedOut:
+    case LoginCancelled:
+        m_stateResetTimer->start();
+        break;
+
+    default:
+        break;
+    }
+
+    m_state = state;
+    Q_EMIT stateChanged();
+}
+
+auto UserModel::setErrorString(const QString &string) -> void
+{
+    if(string == m_errorString)
+    {
+        return;
+    }
+
+    m_errorString = string;
+    Q_EMIT errorStringChanged();
+}

KomplexHubPlugin/usermodel.h

@@ -0,0 +1,76 @@
+#ifndef USERMODEL_H
+#define USERMODEL_H
+
+#include <QObject>
+#include <QTimer>
+#include <QMutex>
+#include <QMutexLocker>
+#include <qqmlintegration.h>
+#include "common/userservices.h"
+
+class UserModel : public QObject
+{
+    Q_OBJECT
+    QML_ELEMENT
+
+public:
+
+    enum State
+    {
+        Idle,
+        LoggingIn,
+        LoggedIn,
+        LoginFailure,
+        LoginCancelled,
+        LoggedOut,
+        Busy
+    };
+    Q_ENUM(State)
+
+    explicit UserModel(QObject *parent = nullptr);
+    ~UserModel();
+
+    Q_INVOKABLE auto login() -> void;
+    Q_INVOKABLE auto login(const QString username) -> void;
+    Q_INVOKABLE auto cancelLogin() -> void;
+    Q_INVOKABLE auto reset() -> void;
+
+    auto username() const -> const QString & { return m_username; }
+    auto setUsername(const QString &username) -> void;
+
+    auto password() const -> const QString & { return m_password; }
+    auto setPassword(const QString &password) -> void;
+
+    auto state() const -> State { return m_state; }
+    auto errorString() const -> QString { return m_errorString; }
+
+signals:
+    auto loginSuccessful() -> void;
+    auto loginFailed() -> void;
+    auto stateChanged() -> void;
+    auto usernameChanged() -> void;
+    auto passwordChanged() -> void;
+    auto errorStringChanged() -> void;
+
+protected slots:
+    auto resetState() -> void;
+
+private:
+    auto setState(State state) -> void;
+    auto setErrorString(const QString &string) -> void;
+
+    State m_state = Idle;
+    QString m_errorString;
+    QString m_username;
+    QString m_password;
+    QTimer *m_stateResetTimer = nullptr;
+    QMutex m_loginMutex;
+    QFuture<UserCredentials> m_loginAttempt;
+
+    Q_PROPERTY(State state READ state NOTIFY stateChanged FINAL)
+    Q_PROPERTY(QString username READ username WRITE setUsername NOTIFY usernameChanged FINAL)
+    Q_PROPERTY(QString password READ password WRITE setPassword NOTIFY passwordChanged FINAL)
+    Q_PROPERTY(QString errorString READ errorString WRITE setErrorString NOTIFY errorStringChanged FINAL)
+};
+
+#endif // USERMODEL_H