fvupdater.cpp

#include "fvupdater.h"
#include "fvplatform.h"
#include "fvignoredversions.h"
#include "fvavailableupdate.h"
#include <QApplication>
#include <QCoreApplication>
#include <QtNetwork>
#include <QDebug>
#include <QSettings>
#include "quazip/quazip.h"
#include "quazip/quazipfile.h"

#ifdef Q_WS_MAC
#include "CoreFoundation/CoreFoundation.h"
#endif

#ifdef FV_GUI
#include "fvupdatewindow.h"
#include "fvupdatedownloadprogress.h"
#include <QMessageBox>
#include <QDesktopServices>
#else
// QSettings key for automatic update installation
#define FV_NEW_VERSION_POLICY_KEY              "FVNewVersionPolicy"
#endif

#ifdef FV_DEBUG
	// Unit tests
#	include "fvversioncomparatortest.h"
#endif

//extern QSettings* settings;

FvUpdater* FvUpdater::m_Instance = 0;

FvUpdater* FvUpdater::sharedUpdater()
{
	static QMutex mutex;
	if (! m_Instance) {
		mutex.lock();

		if (! m_Instance) {
			m_Instance = new FvUpdater;
		}

		mutex.unlock();
	}

	return m_Instance;
}

void FvUpdater::drop()
{
	static QMutex mutex;
	mutex.lock();
	delete m_Instance;
	m_Instance = 0;
	mutex.unlock();
}

FvUpdater::FvUpdater() : QObject(0)
{
	m_reply = 0;
#ifdef FV_GUI
	m_updaterWindow = 0;
#endif
	m_proposedUpdate = 0;
	m_requiredSslFingerprint = "";
	htAuthUsername = "";
	htAuthPassword = "";
	skipVersionAllowed = true;
	remindLaterAllowed = true;

	connect(&m_qnam, SIGNAL(authenticationRequired(QNetworkReply*, QAuthenticator*)),this, SLOT(authenticationRequired(QNetworkReply*, QAuthenticator*)));

	// Translation mechanism
	installTranslator();

#ifdef FV_DEBUG
	// Unit tests
	FvVersionComparatorTest* test = new FvVersionComparatorTest();
	test->runAll();
	delete test;
#endif

}

FvUpdater::~FvUpdater()
{
	if (m_proposedUpdate) {
		delete m_proposedUpdate;
		m_proposedUpdate = 0;
	}

#ifdef FV_GUI
	hideUpdaterWindow();
#endif
}

void FvUpdater::installTranslator()
{
	QTranslator translator;
	QString locale = QLocale::system().name();
	translator.load(QString("fervor_") + locale);

#if QT_VERSION < 0x050000
    QTextCodec::setCodecForTr(QTextCodec::codecForName("utf8"));
#endif

	qApp->installTranslator(&translator);
}

#ifdef FV_GUI
void FvUpdater::showUpdaterWindowUpdatedWithCurrentUpdateProposal()
{
	// Destroy window if already exists
	hideUpdaterWindow();

	// Create a new window
	m_updaterWindow = new FvUpdateWindow(NULL, skipVersionAllowed, remindLaterAllowed);
	m_updaterWindow->UpdateWindowWithCurrentProposedUpdate();
	m_updaterWindow->show();
}

void FvUpdater::hideUpdaterWindow()
{
	if (m_updaterWindow) {
		if (! m_updaterWindow->close()) {
			qWarning() << "Update window didn't close, leaking memory from now on";
		}

		// not deleting because of Qt::WA_DeleteOnClose

		m_updaterWindow = 0;
	}
}

void FvUpdater::updaterWindowWasClosed()
{
	// (Re-)nullify a pointer to a destroyed QWidget or you're going to have a bad time.
	m_updaterWindow = 0;
}
#endif

void FvUpdater::SetFeedURL(QUrl feedURL)
{
	m_feedURL = feedURL;
}

void FvUpdater::SetFeedURL(QString feedURL)
{
	SetFeedURL(QUrl(feedURL));
}

QString FvUpdater::GetFeedURL()
{
	return m_feedURL.toString();
}

FvAvailableUpdate* FvUpdater::GetProposedUpdate()
{
	return m_proposedUpdate;
}


void FvUpdater::InstallUpdate()
{
	if(m_proposedUpdate==NULL)
	{
		qWarning() << "Abort Update: No update prososed! This should not happen.";
		return;
	}

	// Prepare download
	QUrl url = m_proposedUpdate->GetEnclosureUrl();

	// Check SSL Fingerprint if required
	if(url.scheme()=="https" && !m_requiredSslFingerprint.isEmpty())
		if( !checkSslFingerPrint(url) )	// check failed
		{	
			qWarning() << "Update aborted.";
			return;
		}

	// Start Download
	QNetworkReply* reply = m_qnam.get(QNetworkRequest(url));
	connect(reply, SIGNAL(finished()), this, SLOT(httpUpdateDownloadFinished()));

	// Maybe Check request 's return value
	if (reply->error() != QNetworkReply::NoError)
	{
		qDebug()<<"Unable to download the update: "<<reply->errorString();
		return;
	}
	else
		qDebug()<<"OK";

	// Show download Window
#ifdef FV_GUI
	FvUpdateDownloadProgress* dlwindow = new FvUpdateDownloadProgress(NULL);
	connect(reply, SIGNAL(downloadProgress(qint64, qint64)), dlwindow, SLOT(downloadProgress(qint64, qint64) ));
	connect(&m_qnam, SIGNAL(finished(QNetworkReply*)), dlwindow, SLOT(close()));
	dlwindow->show();
#endif

	emit (updatedFinishedSuccessfully());

#ifdef FV_GUI
	hideUpdaterWindow();
#endif
}

void FvUpdater::httpUpdateDownloadFinished()
{
	QNetworkReply* reply = qobject_cast<QNetworkReply*>(sender());
	if(reply==NULL)
	{
		qWarning()<<"The slot httpUpdateDownloadFinished() should only be invoked by S&S.";
		return;
	}

	if(reply->error() == QNetworkReply::NoError)
	{
		int httpstatuscode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toUInt();

		// no error received?
		if (reply->error() == QNetworkReply::NoError)
		{
			if (reply->isReadable())
			{
#ifdef Q_WS_MAC
                CFURLRef appURLRef = CFBundleCopyBundleURL(CFBundleGetMainBundle());
                char path[PATH_MAX];
                if (!CFURLGetFileSystemRepresentation(appURLRef, TRUE, (UInt8 *)path, PATH_MAX)) {
                    // error!
                }

                CFRelease(appURLRef);
                QString filePath = QString(path);
                QString rootDirectory = filePath.left(filePath.lastIndexOf("/"));
#else
                QString rootDirectory = QCoreApplication::applicationDirPath() + "/";
#endif
                
				// Write download into File
				QFileInfo fileInfo=reply->url().path();
				QString fileName = rootDirectory + fileInfo.fileName();
				//qDebug()<<"Writing downloaded file into "<<fileName;
	
				QFile file(fileName);
				file.open(QIODevice::WriteOnly);
				file.write(reply->readAll());
				file.close();

				// Retrieve List of updated files (Placed in an extra scope to avoid QuaZIP handles the archive permanently and thus avoids the deletion.)
				{	
					QuaZip zip(fileName);
					if (!zip.open(QuaZip::mdUnzip)) {
						qWarning("testRead(): zip.open(): %d", zip.getZipError());
						return;
					}
					zip.setFileNameCodec("IBM866");
					QList<QuaZipFileInfo> updateFiles = zip.getFileInfoList();
		
					// Rename all current files with available update.
					for (int i=0;i<updateFiles.size();i++)
					{
						QString sourceFilePath = rootDirectory + "\\" + updateFiles[i].name;
						QDir appDir( QCoreApplication::applicationDirPath() );

						QFileInfo file(	sourceFilePath );
						if(file.exists())
						{
							//qDebug()<<tr("Moving file %1 to %2").arg(sourceFilePath).arg(sourceFilePath+".oldversion");
							appDir.rename( sourceFilePath, sourceFilePath+".oldversion" );
						}
					}
				}

				// Install updated Files
				unzipUpdate(fileName, rootDirectory);

				// Delete update archive
                while(QFile::remove(fileName) )
                {
                };

				// Restart ap to clean up and start usual business
				restartApplication();

			}
			else qDebug()<<"Error: QNetworkReply is not readable!";
		}
		else 
		{
			qDebug()<<"Download errors ocurred! HTTP Error Code:"<<httpstatuscode;
		}

		reply->deleteLater();
    }	// If !reply->error END
}	// httpUpdateDownloadFinished END

bool FvUpdater::unzipUpdate(const QString & filePath, const QString & extDirPath, const QString & singleFileName )
{
	QuaZip zip(filePath);

    if (!zip.open(QuaZip::mdUnzip)) {
		qWarning()<<tr("Error: Unable to open zip archive %1 for unzipping: %2").arg(filePath).arg(zip.getZipError());
		return false;
	}

	zip.setFileNameCodec("IBM866");

	//qWarning("Update contains %d files\n", zip.getEntriesCount());

	QuaZipFileInfo info;
	QuaZipFile file(&zip);
	QFile out;
	QString name;
	QDir appDir(extDirPath);
	for (bool more = zip.goToFirstFile(); more; more = zip.goToNextFile())
	{
		if (!zip.getCurrentFileInfo(&info)) {
			qWarning()<<tr("Error: Unable to retrieve fileInfo about the file to extract: %2").arg(zip.getZipError());
			return false;
		}

		if (!singleFileName.isEmpty())
			if (!info.name.contains(singleFileName))
				continue;

		if (!file.open(QIODevice::ReadOnly)) {
			qWarning()<<tr("Error: Unable to open file %1 for unzipping: %2").arg(filePath).arg(file.getZipError());
			return false;
		}

		name = QString("%1/%2").arg(extDirPath).arg(file.getActualFileName());

		if (file.getZipError() != UNZ_OK) {
			qWarning()<<tr("Error: Unable to retrieve zipped filename to unzip from %1: %2").arg(filePath).arg(file.getZipError());
			return false;
		}
		
		QFileInfo fi(name);
		appDir.mkpath(fi.absolutePath() );	// Ensure that subdirectories - if required - exist 
		out.setFileName(name);
		out.open(QIODevice::WriteOnly);
		out.write( file.readAll() );
		out.close();

		if (file.getZipError() != UNZ_OK) {
			qWarning()<<tr("Error: Unable to unzip file %1: %2").arg(name).arg(file.getZipError());
			return false;
		}

		if (!file.atEnd()) {
			qWarning()<<tr("Error: Have read all available bytes, but pointer still does not show EOF: %1").arg(file.getZipError());
			return false;
		}

		file.close();

		if (file.getZipError() != UNZ_OK) {
			qWarning()<<tr("Error: Unable to close zipped file %1: %2").arg(name).arg(file.getZipError());
			return false;
		}
	}

	zip.close();

	if (zip.getZipError() != UNZ_OK) {
		qWarning()<<tr("Error: Unable to close zip archive file %1: %2").arg(filePath).arg(file.getZipError());
		return false;
	}

	return true;
}


void FvUpdater::SkipUpdate()
{
	qDebug() << "Skip update";

	FvAvailableUpdate* proposedUpdate = GetProposedUpdate();
	if (! proposedUpdate) {
		qWarning() << "Proposed update is NULL (shouldn't be at this point)";
		return;
	}

	// Start ignoring this particular version
	FVIgnoredVersions::IgnoreVersion(proposedUpdate->GetEnclosureVersion());

#ifdef FV_GUI
	hideUpdaterWindow();
#endif
}

void FvUpdater::RemindMeLater()
{
	//qDebug() << "Remind me later";

#ifdef FV_GUI
	hideUpdaterWindow();
#endif
}

bool FvUpdater::CheckForUpdates(bool silentAsMuchAsItCouldGet)
{
	if (m_feedURL.isEmpty()) {
		qCritical() << "Please set feed URL via setFeedURL() before calling CheckForUpdates().";
		return false;
	}

	m_silentAsMuchAsItCouldGet = silentAsMuchAsItCouldGet;

	// Check if application's organization name and domain are set, fail otherwise
	// (nowhere to store QSettings to)
	if (QCoreApplication::organizationName().isEmpty()) {
		qCritical() << "QCoreApplication::organizationName is not set. Please do that.";
		return false;
	}
	if (QCoreApplication::organizationDomain().isEmpty()) {
		qCritical() << "QCoreApplication::organizationDomain is not set. Please do that.";
		return false;
	}

	if(QCoreApplication::applicationName().isEmpty()) {
		qCritical() << "QCoreApplication::applicationName is not set. Please do that.";
		return false;
	}

	// Set application version is not set yet
	if (QCoreApplication::applicationVersion().isEmpty()) {
		qCritical() << "QCoreApplication::applicationVersion is not set. Please do that.";
		return false;
	}

	cancelDownloadFeed();
	m_httpRequestAborted = false;
	startDownloadFeed(m_feedURL);

	return true;
}

bool FvUpdater::CheckForUpdatesSilent()
{
	return CheckForUpdates(true);
}

bool FvUpdater::CheckForUpdatesNotSilent()
{
	return CheckForUpdates(false);
}


void FvUpdater::startDownloadFeed(QUrl url)
{
	m_xml.clear();

	// Check SSL Fingerprint if required
	if(url.scheme()=="https" && !m_requiredSslFingerprint.isEmpty())
		if( !checkSslFingerPrint(url) )	// check failed
		{	
			qWarning() << "Update aborted.";
			return;
		}


	m_reply = m_qnam.get(QNetworkRequest(url));

	connect(m_reply, SIGNAL(readyRead()), this, SLOT(httpFeedReadyRead()));
	connect(m_reply, SIGNAL(downloadProgress(qint64, qint64)), this, SLOT(httpFeedUpdateDataReadProgress(qint64, qint64)));
	connect(m_reply, SIGNAL(finished()), this, SLOT(httpFeedDownloadFinished()));
}

void FvUpdater::cancelDownloadFeed()
{
	if (m_reply) {
		m_httpRequestAborted = true;
		m_reply->abort();
	}
}

void FvUpdater::httpFeedReadyRead()
{
	// this slot gets called every time the QNetworkReply has new data.
	// We read all of its new data and write it into the file.
	// That way we use less RAM than when reading it at the finished()
	// signal of the QNetworkReply
	m_xml.addData(m_reply->readAll());
}

void FvUpdater::httpFeedUpdateDataReadProgress(qint64 bytesRead,
											   qint64 totalBytes)
{
	Q_UNUSED(bytesRead);
	Q_UNUSED(totalBytes);

	if (m_httpRequestAborted) {
		return;
	}
}

void FvUpdater::httpFeedDownloadFinished()
{
	if (m_httpRequestAborted) {
		m_reply->deleteLater();
		return;
	}

	QVariant redirectionTarget = m_reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
	if (m_reply->error()) {

		// Error.
		showErrorDialog(tr("Feed download failed: %1.").arg(m_reply->errorString()), false);

	} else if (! redirectionTarget.isNull()) {
		QUrl newUrl = m_feedURL.resolved(redirectionTarget.toUrl());

		m_feedURL = newUrl;
		m_reply->deleteLater();

		startDownloadFeed(m_feedURL);
		return;

	} else {

		// Done.
		xmlParseFeed();

	}

	m_reply->deleteLater();
	m_reply = 0;
}

bool FvUpdater::xmlParseFeed()
{
	QString currentTag, currentQualifiedTag;

	QString xmlTitle, xmlLink, xmlReleaseNotesLink, xmlPubDate, xmlEnclosureUrl,
			xmlEnclosureVersion, xmlEnclosurePlatform, xmlEnclosureType;
	unsigned long xmlEnclosureLength;

	// Parse
	while (! m_xml.atEnd()) {

		m_xml.readNext();

		if (m_xml.isStartElement()) {

			currentTag = m_xml.name().toString();
			currentQualifiedTag = m_xml.qualifiedName().toString();

			if (m_xml.name() == "item") {

				xmlTitle.clear();
				xmlLink.clear();
				xmlReleaseNotesLink.clear();
				xmlPubDate.clear();
				xmlEnclosureUrl.clear();
				xmlEnclosureVersion.clear();
				xmlEnclosurePlatform.clear();
				xmlEnclosureLength = 0;
				xmlEnclosureType.clear();

			} else if (m_xml.name() == "enclosure") {

				QXmlStreamAttributes attribs = m_xml.attributes();

				if (attribs.hasAttribute("fervor:platform"))
				{
					xmlEnclosurePlatform = attribs.value("fervor:platform").toString().trimmed();

					if (FvPlatform::CurrentlyRunningOnPlatform(xmlEnclosurePlatform))
					{
						xmlEnclosureUrl = attribs.hasAttribute("url") ? attribs.value("url").toString().trimmed() : "";
				
						xmlEnclosureVersion = "";
						if (attribs.hasAttribute("fervor:version")) 
							xmlEnclosureVersion = attribs.value("fervor:version").toString().trimmed();
						if (attribs.hasAttribute("sparkle:version"))
							xmlEnclosureVersion = attribs.value("sparkle:version").toString().trimmed();
				
						xmlEnclosureLength = attribs.hasAttribute("length") ? attribs.value("length").toString().toLong() : 0;
		
						xmlEnclosureType = attribs.hasAttribute("type") ? attribs.value("type").toString().trimmed() : "";
					}

				}	// if hasAttribute flevor:platform END

			}	// IF encosure END

		} else if (m_xml.isEndElement()) {

			if (m_xml.name() == "item") {

				// That's it - we have analyzed a single <item> and we'll stop
				// here (because the topmost is the most recent one, and thus
				// the newest version.

				return searchDownloadedFeedForUpdates(xmlTitle,
													  xmlLink,
													  xmlReleaseNotesLink,
													  xmlPubDate,
													  xmlEnclosureUrl,
													  xmlEnclosureVersion,
													  xmlEnclosurePlatform,
													  xmlEnclosureLength,
													  xmlEnclosureType);

			}

		} else if (m_xml.isCharacters() && ! m_xml.isWhitespace()) {

			if (currentTag == "title") {
				xmlTitle += m_xml.text().toString().trimmed();

			} else if (currentTag == "link") {
				xmlLink += m_xml.text().toString().trimmed();

			} else if (currentQualifiedTag == "sparkle:releaseNotesLink") {
				xmlReleaseNotesLink += m_xml.text().toString().trimmed();

			} else if (currentTag == "pubDate") {
				xmlPubDate += m_xml.text().toString().trimmed();

			}

		}

		if (m_xml.error() && m_xml.error() != QXmlStreamReader::PrematureEndOfDocumentError) {

			showErrorDialog(tr("Feed parsing failed: %1 %2.").arg(QString::number(m_xml.lineNumber()), m_xml.errorString()), false);
			return false;

		}
	}

	return false;
}


bool FvUpdater::searchDownloadedFeedForUpdates(QString xmlTitle,
											   QString xmlLink,
											   QString xmlReleaseNotesLink,
											   QString xmlPubDate,
											   QString xmlEnclosureUrl,
											   QString xmlEnclosureVersion,
											   QString xmlEnclosurePlatform,
											   unsigned long xmlEnclosureLength,
											   QString xmlEnclosureType)
{
	Q_UNUSED(xmlTitle);
	Q_UNUSED(xmlPubDate);
	Q_UNUSED(xmlEnclosureLength);
	Q_UNUSED(xmlEnclosureType);

	// Validate
	if (xmlReleaseNotesLink.isEmpty()) {
		if (xmlLink.isEmpty()) {
			showErrorDialog(tr("Feed error: \"release notes\" link is empty"), false);
			return false;
		} else {
			xmlReleaseNotesLink = xmlLink;
		}
	} else {
		xmlLink = xmlReleaseNotesLink;
	}
	if (! (xmlLink.startsWith("http://") || xmlLink.startsWith("https://"))) {
		showErrorDialog(tr("Feed error: invalid \"release notes\" link"), false);
		return false;
	}
	if (xmlEnclosureUrl.isEmpty() || xmlEnclosureVersion.isEmpty() || xmlEnclosurePlatform.isEmpty()) {
		showErrorDialog(tr("Feed error: invalid \"enclosure\" with the download link"), false);
		return false;
	}

	// Relevant version?
	if (FVIgnoredVersions::VersionIsIgnored(xmlEnclosureVersion)) {
		qDebug() << "Version '" << xmlEnclosureVersion << "' is ignored, too old or something like that.";

		showInformationDialog(tr("No updates were found."), false);

		return true;	// Things have succeeded when you think of it.
	}


	//
	// Success! At this point, we have found an update that can be proposed
	// to the user.
	//

	if (m_proposedUpdate) {
		delete m_proposedUpdate; m_proposedUpdate = 0;
	}
	m_proposedUpdate = new FvAvailableUpdate();
	m_proposedUpdate->SetTitle(xmlTitle);
	m_proposedUpdate->SetReleaseNotesLink(xmlReleaseNotesLink);
	m_proposedUpdate->SetPubDate(xmlPubDate);
	m_proposedUpdate->SetEnclosureUrl(xmlEnclosureUrl);
	m_proposedUpdate->SetEnclosureVersion(xmlEnclosureVersion);
	m_proposedUpdate->SetEnclosurePlatform(xmlEnclosurePlatform);
	m_proposedUpdate->SetEnclosureLength(xmlEnclosureLength);
	m_proposedUpdate->SetEnclosureType(xmlEnclosureType);

#ifdef FV_GUI
	// Show "look, there's an update" window
	showUpdaterWindowUpdatedWithCurrentUpdateProposal();
#else
	// Decide ourselves what to do
	decideWhatToDoWithCurrentUpdateProposal();
#endif

	return true;
}


void FvUpdater::showErrorDialog(QString message, bool showEvenInSilentMode)
{
	if (m_silentAsMuchAsItCouldGet) {
		if (! showEvenInSilentMode) {
			// Don't show errors in the silent mode
			return;
		}
	}

#ifdef FV_GUI
	QMessageBox dlFailedMsgBox;
	dlFailedMsgBox.setIcon(QMessageBox::Critical);
	dlFailedMsgBox.setText(tr("Error"));
	dlFailedMsgBox.setInformativeText(message);
	dlFailedMsgBox.exec();
#else
	qCritical() << message;
#endif
}

void FvUpdater::showInformationDialog(QString message, bool showEvenInSilentMode)
{
	if (m_silentAsMuchAsItCouldGet) {
		if (! showEvenInSilentMode) {
			// Don't show information dialogs in the silent mode
			return;
		}
	}

#ifdef FV_GUI
	QMessageBox dlInformationMsgBox;
	dlInformationMsgBox.setIcon(QMessageBox::Information);
	dlInformationMsgBox.setText(tr("Information"));
	dlInformationMsgBox.setInformativeText(message);
	dlInformationMsgBox.exec();
#else
	qDebug() << message;
#endif
}

void FvUpdater::finishUpdate(QString pathToFinish)
{
	pathToFinish = pathToFinish.isEmpty() ? QCoreApplication::applicationDirPath() : pathToFinish;
	QDir appDir(pathToFinish);
	appDir.setFilter( QDir::Files | QDir::Dirs );

	QFileInfoList dirEntries = appDir.entryInfoList();
	foreach (QFileInfo fi, dirEntries)
	{
		if ( fi.isDir() )
		{
            QString dirname = fi.fileName();
            if ((dirname==".") || (dirname == ".."))
                continue;
			
			// recursive clean up subdirectory
			finishUpdate(fi.filePath());
		}
		else
		{
			if(fi.suffix()=="oldversion")
				if( !appDir.remove( fi.absoluteFilePath() ) )
					qDebug()<<"Error: Unable to clean up file: "<<fi.absoluteFilePath();

		}
	}	// For each dir entry END
}

void FvUpdater::restartApplication()
{
	// Spawn a new instance of myApplication:
    QString app = QApplication::applicationFilePath();
    QStringList arguments = QApplication::arguments();
    QString wd = QDir::currentPath();
    qDebug() << app << arguments << wd;
    QProcess::startDetached(app, arguments, wd);
    QApplication::exit();
}

void FvUpdater::setRequiredSslFingerPrint(QString md5)
{
	m_requiredSslFingerprint = md5.remove(":");
}

QString FvUpdater::getRequiredSslFingerPrint()
{
	return m_requiredSslFingerprint;
}

bool FvUpdater::checkSslFingerPrint(QUrl urltoCheck)
{
	if(urltoCheck.scheme()!="https")
	{
		qWarning()<<tr("SSL fingerprint check: The url %1 is not a ssl connection!").arg(urltoCheck.toString());
		return false;
	}

	QSslSocket *socket = new QSslSocket(this);
	socket->connectToHostEncrypted(urltoCheck.host(), 443);
	if( !socket->waitForEncrypted(1000))	// waits until ssl emits encrypted(), max 1000msecs
	{
		qWarning()<<"SSL fingerprint check: Unable to connect SSL server: "<<socket->sslErrors();
		return false;
	}

	QSslCertificate cert = socket->peerCertificate();

	if(cert.isNull())
	{
		qWarning()<<"SSL fingerprint check: Unable to retrieve SSL server certificate.";
		return false;
	}

	// COmpare digests
	if(cert.digest().toHex() != m_requiredSslFingerprint)
	{
		qWarning()<<"SSL fingerprint check: FINGERPRINT MISMATCH! Server digest="<<cert.digest().toHex()<<", requiered ssl digest="<<m_requiredSslFingerprint;
		return false;
	}
	
	return true;
}

void FvUpdater::authenticationRequired ( QNetworkReply * reply, QAuthenticator * authenticator )
{
	if(reply==NULL || authenticator==NULL)
		return;

	if(!authenticator->user().isEmpty())	// If there is already a login user set but an authentication is still required: credentials must be wrong -> abort
	{
		reply->abort();
		qWarning()<<"Http authentication: Wrong credentials!";
		return;
	}

	authenticator->setUser(htAuthUsername);
	authenticator->setPassword(htAuthPassword);
}

void FvUpdater::setHtAuthCredentials(QString user, QString pass)
{
	htAuthUsername = user;
	htAuthPassword = pass;
}

void FvUpdater::setHtAuthUsername(QString user)
{
	htAuthUsername = user;
}

void FvUpdater::setHtAuthPassword(QString pass)
{
	htAuthPassword = pass;
}

void FvUpdater::setSkipVersionAllowed(bool allowed)
{
	skipVersionAllowed = allowed;
}

void FvUpdater::setRemindLaterAllowed(bool allowed)
{
	remindLaterAllowed = allowed;
}

bool FvUpdater::getSkipVersionAllowed()
{
	return skipVersionAllowed;
}

bool FvUpdater::getRemindLaterAllowed()
{
	return remindLaterAllowed;
}

#ifndef FV_GUI

void FvUpdater::decideWhatToDoWithCurrentUpdateProposal()
{
    InstallUpdate();
    /*
	QString policy = settings->value(FV_NEW_VERSION_POLICY_KEY).toString();
	if(policy == "install")
	else if(policy == "skip")
		SkipUpdate();
	else
		RemindMeLater();
    */
}

#endif