qssldiffiehellmanparameters.cpp

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// Copyright (C) 2015 Mikkel Krautz <mikkel@krautz.dk>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
 
#include "qssldiffiehellmanparameters.h"
#include "qssldiffiehellmanparameters_p.h"
#include "qtlsbackend_p.h"
#include "qsslsocket.h"
#include "qsslsocket_p.h"
 
#include <QtCore/qcoreapplication.h>
#include <QtCore/qatomic.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qbytearraymatcher.h>
#include <QtCore/qiodevice.h>
#include <QtCore/qdebug.h>
 
QT_BEGIN_NAMESPACE
 
// The 2048-bit MODP group from RFC 3526
Q_AUTOTEST_EXPORT const char *qssl_dhparams_default_base64 =
    "MIIBCAKCAQEA///////////JD9qiIWjCNMTGYouA3BzRKQJOCIpnzHQCC76mOxObIlFKCHmO"
    "NATd75UZs806QxswKwpt8l8UN0/hNW1tUcJF5IW1dmJefsb0TELppjftawv/XLb0Brft7jhr"
    "+1qJn6WunyQRfEsf5kkoZlHs5Fs9wgB8uKFjvwWY2kg2HFXTmmkWP6j9JM9fg2VdI9yjrZYc"
    "YvNWIIVSu57VKQdwlpZtZww1Tkq8mATxdGwIyhghfDKQXkYuNs474553LBgOhgObJ4Oi7Aei"
    "j7XFXfBvTFLJ3ivL9pVYFxg5lUl86pVq5RXSJhiY+gUQFXKOWoqsqmj//////////wIBAg==";
 
QSslDiffieHellmanParameters QSslDiffieHellmanParameters::defaultParameters()
{
    QSslDiffieHellmanParameters def;
    def.d->derData = QByteArray::fromBase64(QByteArray(qssl_dhparams_default_base64));
    return def;
}
 
QSslDiffieHellmanParameters::QSslDiffieHellmanParameters()
    : d(new QSslDiffieHellmanParametersPrivate)
{
    d->ref.ref();
}
 
QSslDiffieHellmanParameters QSslDiffieHellmanParameters::fromEncoded(const QByteArray &encoded, QSsl::EncodingFormat encoding)
{
    QSslDiffieHellmanParameters result;
    const auto *tlsBackend = QSslSocketPrivate::tlsBackendInUse();
    if (!tlsBackend)
        return result;
    switch (encoding) {
    case QSsl::Der:
        result.d->initFromDer(encoded);
        break;
    case QSsl::Pem:
        result.d->initFromPem(encoded);
        break;
    }
    return result;
}
 
QSslDiffieHellmanParameters QSslDiffieHellmanParameters::fromEncoded(QIODevice *device, QSsl::EncodingFormat encoding)
{
    if (device)
        return fromEncoded(device->readAll(), encoding);
    else
        return QSslDiffieHellmanParameters();
}
 
QSslDiffieHellmanParameters::QSslDiffieHellmanParameters(const QSslDiffieHellmanParameters &other)
    : d(other.d)
{
    if (d)
        d->ref.ref();
}
 
QSslDiffieHellmanParameters::~QSslDiffieHellmanParameters()
{
    if (d && !d->ref.deref())
        delete d;
}
 
QSslDiffieHellmanParameters &QSslDiffieHellmanParameters::operator=(const QSslDiffieHellmanParameters &other)
{
    QSslDiffieHellmanParameters copy(other);
    swap(copy);
    return *this;
}
 
bool QSslDiffieHellmanParameters::isEmpty() const noexcept
{
    return d->derData.isNull() && d->error == QSslDiffieHellmanParameters::NoError;
}
 
bool QSslDiffieHellmanParameters::isValid() const noexcept
{
    return d->error == QSslDiffieHellmanParameters::NoError;
}
 
QSslDiffieHellmanParameters::Error QSslDiffieHellmanParameters::error() const noexcept
{
    return d->error;
}
 
QString QSslDiffieHellmanParameters::errorString() const noexcept
{
    switch (d->error) {
    case QSslDiffieHellmanParameters::NoError:
        return QCoreApplication::translate("QSslDiffieHellmanParameter", "No error");
    case QSslDiffieHellmanParameters::InvalidInputDataError:
        return QCoreApplication::translate("QSslDiffieHellmanParameter", "Invalid input data");
    case QSslDiffieHellmanParameters::UnsafeParametersError:
        return QCoreApplication::translate("QSslDiffieHellmanParameter", "The given Diffie-Hellman parameters are deemed unsafe");
    }
 
    Q_UNREACHABLE_RETURN(QString());
}
 
bool QSslDiffieHellmanParameters::isEqual(const QSslDiffieHellmanParameters &other) const noexcept
{
    return d->derData == other.d->derData;
}
 
void QSslDiffieHellmanParametersPrivate::initFromDer(const QByteArray &der)
{
    if (const auto *tlsBackend = QSslSocketPrivate::tlsBackendInUse())
        error = QSslDiffieHellmanParameters::Error(tlsBackend->dhParametersFromDer(der, &derData));
}
 
void QSslDiffieHellmanParametersPrivate::initFromPem(const QByteArray &pem)
{
    if (const auto *tlsBackend = QSslSocketPrivate::tlsBackendInUse())
        error = QSslDiffieHellmanParameters::Error(tlsBackend->dhParametersFromPem(pem, &derData));
}
 
#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug debug, const QSslDiffieHellmanParameters &dhparam)
{
    QDebugStateSaver saver(debug);
    debug.resetFormat().nospace();
    debug << "QSslDiffieHellmanParameters(" << dhparam.d->derData.toBase64() << ')';
    return debug;
}
#endif
 
size_t qHash(const QSslDiffieHellmanParameters &dhparam, size_t seed) noexcept
{
    return qHash(dhparam.d->derData, seed);
}
 
QT_END_NAMESPACE