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/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the QtCoap module.
**
** $QT_BEGIN_LICENSE:BSD$
** 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.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qmlcoapsecureclient.h"
#include <QCoapReply>
#include <QFile>
#include <QLoggingCategory>
#include <QMetaEnum>
#include <QUrl>
Q_LOGGING_CATEGORY(lcCoapClient, "qt.coap.client")
QmlCoapSecureClient::QmlCoapSecureClient(QObject *parent)
: QObject(parent)
, m_coapClient(nullptr)
, m_securityMode(QtCoap::SecurityMode::NoSec)
{
}
QmlCoapSecureClient::~QmlCoapSecureClient()
{
if (m_coapClient) {
delete m_coapClient;
m_coapClient = nullptr;
}
}
static QString errorMessage(QtCoap::Error errorCode)
{
const auto error = QMetaEnum::fromType<QtCoap::Error>().valueToKey(static_cast<int>(errorCode));
return QString("Request failed with error: %1\n").arg(error);
}
void QmlCoapSecureClient::setSecurityMode(QtCoap::SecurityMode mode)
{
// Create a new client, if the security mode has changed
if (m_coapClient && mode != m_securityMode) {
delete m_coapClient;
m_coapClient = nullptr;
}
if (!m_coapClient) {
m_coapClient = new QCoapClient(mode);
m_securityMode = mode;
connect(m_coapClient, &QCoapClient::finished, this,
[this](QCoapReply *reply) {
if (!reply)
emit finished("Something went wrong, received a null reply");
else if (reply->errorReceived() != QtCoap::Error::Ok)
emit finished(errorMessage(reply->errorReceived()));
else
emit finished(reply->message().payload());
});
connect(m_coapClient, &QCoapClient::error, this,
[this](QCoapReply *, QtCoap::Error errorCode) {
emit finished(errorMessage(errorCode));
});
}
}
void QmlCoapSecureClient::sendGetRequest(const QString &host, const QString &path, int port)
{
if (!m_coapClient)
return;
m_coapClient->setSecurityConfiguration(m_configuration);
QUrl url;
url.setHost(host);
url.setPath(path);
url.setPort(port);
m_coapClient->get(url);
}
void
QmlCoapSecureClient::setSecurityConfiguration(const QString &preSharedKey, const QString &identity)
{
QCoapSecurityConfiguration configuration;
configuration.setPreSharedKey(preSharedKey.toUtf8());
configuration.setIdentity(identity.toUtf8());
m_configuration = configuration;
}
void QmlCoapSecureClient::setSecurityConfiguration(const QString &localCertificatePath,
const QString &caCertificatePath,
const QString &privateKeyPath)
{
QCoapSecurityConfiguration configuration;
const auto localCerts = QSslCertificate::fromPath(QUrl(localCertificatePath).toLocalFile());
if (localCerts.isEmpty())
qCWarning(lcCoapClient, "The specified local certificate file is not valid.");
else
configuration.setLocalCertificateChain(localCerts.toVector());
const auto caCerts = QSslCertificate::fromPath(QUrl(caCertificatePath).toLocalFile());
if (caCerts.isEmpty())
qCWarning(lcCoapClient, "The specified CA certificate file is not valid.");
else
configuration.setCaCertificates(caCerts.toVector());
QFile privateKey(QUrl(privateKeyPath).toLocalFile());
if (privateKey.open(QIODevice::ReadOnly)) {
QCoapPrivateKey key(privateKey.readAll(), QSsl::Ec);
configuration.setPrivateKey(key);
} else {
qCWarning(lcCoapClient) << "Unable to read the specified private key file"
<< privateKeyPath;
}
m_configuration = configuration;
}
void QmlCoapSecureClient::disconnect()
{
if (m_coapClient)
m_coapClient->disconnect();
}
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