ip2cupdater.h

//------------------------------------------------------------------------------
// ip2cupdater.h
//------------------------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301  USA
//
//------------------------------------------------------------------------------
// Copyright (C) 2009 Braden "Blzut3" Obrzut <admin@maniacsvault.net>
//------------------------------------------------------------------------------
#ifndef __IP2CUPDATER_H__
#define __IP2CUPDATER_H__

#include <QByteArray>
#include <QObject>
#include <QNetworkReply>

class IP2CUpdater : public QObject
{
        Q_OBJECT

        public:
                enum UpdateStatus
                {
                        UpToDate,
                        UpdateNeeded,
                        UpdateCheckError
                };

                IP2CUpdater(QObject *parent = NULL);
                ~IP2CUpdater();

                void downloadDatabase(const QString &savePath);
                const QByteArray& downloadedData();

                bool getRollbackData(const QString &databasePath);

                bool hasDownloadedData() const { return !retrievedData.isEmpty(); }
                bool hasRollbackData() const { return !rollbackData.isEmpty(); }

                bool isWorking() const;

                void needsUpdate(const QString& filePath);


                bool rollback(const QString &savePath);

                bool saveDownloadedData(const QString &savePath);

        signals:
                void databaseDownloadFinished(const QByteArray& downloadedData);
                void downloadProgress(qint64 value, qint64 max);
                void updateNeeded(int status);

        private:
                static const QUrl dbChecksumUrl();
                static const QUrl dbDownloadUrl();

                QNetworkAccessManager* pNetworkAccessManager;
                QNetworkReply* pCurrentNetworkReply;

                QString lastAsyncCallPath;
                QByteArray retrievedData;
                QByteArray rollbackData;

                void abort();
                void get(const QUrl &url, const char *finishedSlot);
                bool handleRedirect(QNetworkReply &reply, const char *finishedSlot);
                bool save(const QByteArray& saveWhat, const QString &savePath);

        private slots:
                void checksumDownloadFinished();
                void downloadFinished();
};

#endif