Added additional UserServices functionality

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"
+    "com.digitalartifex.komplex"
-);
-
-inline const QString KOMPLEX_KEYCHAIN_TOKEN_KEY = QStringLiteral
-(
-    "com.digitalartifex.komplex.keychain.token"
 );
 
 #endif // KOMPLEX_GLOBAL_H

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
@@ -139,6 +275,8 @@ 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();
@@ -146,3 +284,68 @@ auto UserServices::login(const QString &username, const QByteArray &password) ->
         }
     );
 }
+
+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)