passutils.cpp

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 *
 * Boost Software License - Version 1.0 - August 17th, 2003
 *
 * Permission is hereby granted, free of charge, to any person or organization
 * obtaining a copy of the software and accompanying documentation covered by
 * this license (the "Software") to use, reproduce, display, distribute,
 * execute, and transmit the Software, and to prepare derivative works of the
 * Software, and to permit third-parties to whom the Software is furnished to
 * do so, all subject to the following:
 *
 * The copyright notices in the Software and this entire statement, including
 * the above license grant, this restriction and the following disclaimer,
 * must be included in all copies of the Software, in whole or in part, and
 * all derivative works of the Software, unless such copies or derivative
 * works are solely in the form of machine-executable object code generated by
 * a source language processor.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
 * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 **********************************************************************/
 
#include "passutils.h"
#include <QString>
#include <QObject>
#include <QInputDialog>
#include <util/xpc/util.h>
#include <interfaces/structures.h>
#include <interfaces/core/ientitymanager.h>
#include <interfaces/core/ipluginsmanager.h>
#include <interfaces/ipersistentstorageplugin.h>
#include <util/sll/eithercont.h>
#include <util/sll/slotclosure.h>
 
namespace LC
{
namespace Util
{
    namespace
    {
        QString GetPasswordHelper (const QByteArray& key, const ICoreProxy_ptr& proxy)
        {
            const auto& result = Util::GetPersistentData (key, proxy);
            if (!result.isValid ())
            {
                qWarning () << Q_FUNC_INFO
                        << "invalid result for key"
                        << key;
                return {};
            }
 
            switch (result.type ())
            {
            case QVariant::String:
                return result.toString ();
            case QVariant::List:
                return result.toList ().value (0).toString ();
            case QVariant::StringList:
                return result.toStringList ().value (0);
            default:
                qWarning () << Q_FUNC_INFO
                        << "unknown result type"
                        << result.type ()
                        << result
                        << "for key"
                        << key;
                return {};
            }
        }
    }
 
    QString GetPassword (const QString& key, const QString& diaText,
            const ICoreProxy_ptr& proxy, bool useStored)
    {
        if (useStored)
        {
            const auto& result = GetPasswordHelper (key.toUtf8 (), proxy);
            if (!result.isNull ())
                return result;
        }
 
        const auto& result = QInputDialog::getText (nullptr,
                "LeechCraft",
                diaText,
                QLineEdit::Password);
        if (!result.isNull ())
            SavePassword (result, key, proxy);
        return result;
    }
 
    void GetPassword (const QString& key, const QString& diaText,
            const ICoreProxy_ptr& proxy,
            const EitherCont<void (), void (QString)>& cont,
            QObject *depender,
            bool useStored)
    {
        if (useStored)
        {
            const auto& result = GetPasswordHelper (key.toUtf8 (), proxy);
            if (!result.isNull ())
            {
                cont.Right (result);
                return;
            }
        }
 
        const auto dialog = new QInputDialog;
        dialog->setInputMode (QInputDialog::TextInput);
        dialog->setWindowTitle ("LeechCraft");
        dialog->setLabelText (diaText);
        dialog->setTextEchoMode (QLineEdit::Password);
        dialog->setAttribute (Qt::WA_DeleteOnClose);
 
        if (depender)
            QObject::connect (depender,
                    SIGNAL (destroyed ()),
                    dialog,
                    SLOT (deleteLater ()));
 
        new Util::SlotClosure<Util::DeleteLaterPolicy>
        {
            [dialog, cont]
            {
                const auto& value = dialog->textValue ();
                if (value.isEmpty ())
                    cont.Left ();
                else
                    cont.Right (value);
            },
            dialog,
            SIGNAL (accepted ()),
            dialog
        };
 
        new Util::SlotClosure<Util::DeleteLaterPolicy>
        {
            [cont] { cont.Left (); },
            dialog,
            SIGNAL (rejected ()),
            dialog
        };
 
        dialog->show ();
    }
 
    void SavePassword (const QString& password, const QString& key,
            const ICoreProxy_ptr& proxy)
    {
        const auto& plugins = proxy->GetPluginsManager ()->GetAllCastableTo<IPersistentStoragePlugin*> ();
        for (const auto plugin : plugins)
            if (const auto& storage = plugin->RequestStorage ())
                storage->Set (key.toUtf8 (), password);
    }
}
}