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/****************************************************************************
**
** Copyright (C) 2017 Witekio.
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCoap module.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qcoapresourcediscoveryreply_p.h"
#include "qcoapinternalreply_p.h"
#include "qcoapnamespace_p.h"
QT_BEGIN_NAMESPACE
QCoapResourceDiscoveryReplyPrivate::QCoapResourceDiscoveryReplyPrivate(const QCoapRequest &request) :
QCoapReplyPrivate(request)
{
}
/*!
\internal
Updates the QCoapResourceDiscoveryReply object, its message and list of resources
with data of the internal reply \a internalReply.
*/
void QCoapResourceDiscoveryReplyPrivate::_q_setContent(const QHostAddress &sender,
const QCoapMessage &msg,
QtCoap::ResponseCode code)
{
Q_Q(QCoapResourceDiscoveryReply);
if (q->isFinished())
return;
message = msg;
responseCode = code;
if (QtCoap::isError(responseCode)) {
_q_setError(responseCode);
} else {
auto res = QCoapResourceDiscoveryReply::resourcesFromCoreLinkList(sender, message.payload());
resources.append(res);
emit q->discovered(q, res);
}
}
/*!
\class QCoapResourceDiscoveryReply
\inmodule QtCoap
\brief The QCoapResourceDiscoveryReply class holds the data of a CoAP reply
for a resource discovery request.
\reentrant
This class is used for discovery requests. It emits the discovered()
signal if and when resources are discovered. When using a multicast
address for discovery, the discovered() signal will be emitted once
for each response received.
\note A QCoapResourceDiscoveryReply is a QCoapReply that stores also a list
of QCoapResources.
\sa QCoapClient, QCoapRequest, QCoapReply, QCoapResource
*/
/*!
\fn void QCoapResourceDiscoveryReply::discovered(QCoapResourceDiscoveryReply *reply,
QVector<QCoapResource> resources);
This signal is emitted whenever a CoAP resource is discovered.
The \a reply parameter contains a pointer to the reply that has just been
received, and \a resources contains a list of resources that were discovered.
\sa QCoapReply::finished()
*/
/*!
Constructs a new CoAP discovery reply from the \a request and sets \a parent
as its parent.
*/
QCoapResourceDiscoveryReply::QCoapResourceDiscoveryReply(const QCoapRequest &request, QObject *parent) :
QCoapReply(*new QCoapResourceDiscoveryReplyPrivate(request), parent)
{
}
/*!
Returns the list of resources.
*/
QVector<QCoapResource> QCoapResourceDiscoveryReply::resources() const
{
Q_D(const QCoapResourceDiscoveryReply);
return d->resources;
}
/*!
Decodes the \a data received from the \a sender to a list of QCoapResource
objects. The \a data byte array contains the frame returned by the
discovery request.
*/
QVector<QCoapResource>
QCoapResourceDiscoveryReply::resourcesFromCoreLinkList(const QHostAddress &sender, const QByteArray &data)
{
QVector<QCoapResource> resourceList;
QLatin1String quote = QLatin1String("\"");
const QList<QByteArray> links = data.split(',');
for (QByteArray link : links) {
QCoapResource resource;
resource.setHost(sender);
const QList<QByteArray> parameterList = link.split(';');
for (QByteArray parameter : parameterList) {
QString parameterString = QString::fromUtf8(parameter);
int length = parameterString.length();
if (parameter.startsWith('<'))
resource.setPath(parameterString.mid(1, length - 2));
else if (parameter.startsWith("title="))
resource.setTitle(parameterString.mid(6).remove(quote));
else if (parameter.startsWith("rt="))
resource.setResourceType(parameterString.mid(3).remove(quote));
else if (parameter.startsWith("if="))
resource.setInterface(parameterString.mid(3).remove(quote));
else if (parameter.startsWith("sz="))
resource.setMaximumSize(parameterString.mid(3).remove(quote).toInt());
else if (parameter.startsWith("ct="))
resource.setContentFormat(parameterString.mid(3).remove(quote).toUInt());
else if (parameter == "obs")
resource.setObservable(true);
}
if (!resource.path().isEmpty())
resourceList.push_back(resource);
}
return resourceList;
}
QT_END_NAMESPACE
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