source: smplayer/trunk/src/updatechecker.cpp@ 151

/*  smplayer, GUI front-end for mplayer.
    Copyright (C) 2006-2013 Ricardo Villalba <rvm@users.sourceforge.net>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "updatechecker.h"
#include "version.h"
#include <QSettings>
#include <QUrl>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QRegExp>
#include <QDate>
#include <QDateTime>

UpdateChecker::UpdateChecker(QObject * parent, QSettings * settings) : QObject(parent)
{
        set = settings;

        set->beginGroup("update_checker");
        QDate last_checked = set->value("checked_date", 0).toDate();
        bool enabled = set->value("enabled", true).toBool();
        int days_to_check = set->value("days_to_check", 7).toInt();
        set->endGroup();

        QDate now = QDate::currentDate();
        //now = now.addDays(27);
        int days = QDateTime(last_checked).daysTo(QDateTime(now));

        qDebug("UpdateChecker::UpdateChecker: enabled: %d", enabled);
        qDebug("UpdateChecker::UpdateChecker: days_to_check: %d", days_to_check);
        qDebug("UpdateChecker::UpdateChecker: days since last check: %d", days);

        if ((!enabled) || (days < days_to_check)) return;

        net_manager = new QNetworkAccessManager();
        QUrl url("http://smplayer.sourceforge.net/current_version");

        QNetworkRequest req(url);
        QNetworkReply *reply = net_manager->get(req);
        connect(reply, SIGNAL(finished()), this, SLOT(gotReply()));
}

UpdateChecker::~UpdateChecker() {
}

void UpdateChecker::gotReply() {
        qDebug("UpdateChecker::gotReply");

        QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());

        if (reply) {
                if (reply->error() == QNetworkReply::NoError) {
                        //read data from reply
                        QRegExp rx_version("^version=(.*)");
                        QString version;
                        while (reply->canReadLine()) {
                                QByteArray line = reply->readLine().trimmed();
                                //qDebug("line: %s", line.constData());
                                if (rx_version.indexIn(line) != -1) {
                                        version = rx_version.cap(1);
                                        //qDebug("version: %s", version.toUtf8().constData());
                                        break;
                                }
                        }
                        if (!version.isEmpty()) {
                                set->beginGroup("update_checker");
                                QString last_known_version = set->value("last_known_version", stableVersion()).toString();
                                set->setValue("checked_date", QDate::currentDate());
                                set->endGroup();
                                if ((last_known_version != version) && (version !=stableVersion())) {
                                        qDebug("UpdateChecker::gotReply: new version found: %s", version.toUtf8().constData());
                                        emit newVersionFound(version);
                                }
                        }
                } else {
                        //get http status code
                        int status = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
                        qDebug("UpdateChecker::gotReply: status: %d", status);
                }
                reply->deleteLater();
        }
}

void UpdateChecker::saveVersion(QString v) {
        set->beginGroup("update_checker");
        set->setValue("last_known_version", v);
        set->endGroup();
}

#include "moc_updatechecker.cpp"