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Diffstat (limited to 'examples/coap/quicksecureclient/qmlcoapsecureclient.cpp')
| -rw-r--r-- | examples/coap/quicksecureclient/qmlcoapsecureclient.cpp | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/examples/coap/quicksecureclient/qmlcoapsecureclient.cpp b/examples/coap/quicksecureclient/qmlcoapsecureclient.cpp new file mode 100644 index 0000000..f73af8e --- /dev/null +++ b/examples/coap/quicksecureclient/qmlcoapsecureclient.cpp @@ -0,0 +1,161 @@ +/**************************************************************************** +** +** 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::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(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::NoError) + 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; +} |