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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QDTLS_H
#define QDTLS_H
#include <QtNetwork/qtnetworkglobal.h>
#include <QtNetwork/qsslsocket.h>
#include <QtNetwork/qssl.h>
#include <QtCore/qcryptographichash.h>
#include <QtCore/qobject.h>
#include <QtCore/qcontainerfwd.h>
Q_MOC_INCLUDE(<QtNetwork/QSslPreSharedKeyAuthenticator>)
#ifndef Q_CLANG_QDOC
QT_REQUIRE_CONFIG(dtls);
#endif
QT_BEGIN_NAMESPACE
enum class QDtlsError : unsigned char
{
NoError,
InvalidInputParameters,
InvalidOperation,
UnderlyingSocketError,
RemoteClosedConnectionError,
PeerVerificationError,
TlsInitializationError,
TlsFatalError,
TlsNonFatalError
};
class QHostAddress;
class QUdpSocket;
class QByteArray;
class QString;
class QDtlsClientVerifierPrivate;
class Q_NETWORK_EXPORT QDtlsClientVerifier : public QObject
{
Q_OBJECT
public:
explicit QDtlsClientVerifier(QObject *parent = nullptr);
~QDtlsClientVerifier();
struct Q_NETWORK_EXPORT GeneratorParameters
{
GeneratorParameters();
GeneratorParameters(QCryptographicHash::Algorithm a, const QByteArray &s);
QCryptographicHash::Algorithm hash = QCryptographicHash::Sha1;
QByteArray secret;
};
bool setCookieGeneratorParameters(const GeneratorParameters ¶ms);
GeneratorParameters cookieGeneratorParameters() const;
bool verifyClient(QUdpSocket *socket, const QByteArray &dgram,
const QHostAddress &address, quint16 port);
QByteArray verifiedHello() const;
QDtlsError dtlsError() const;
QString dtlsErrorString() const;
private:
Q_DECLARE_PRIVATE(QDtlsClientVerifier)
Q_DISABLE_COPY(QDtlsClientVerifier)
};
class QSslPreSharedKeyAuthenticator;
class QSslConfiguration;
class QSslCipher;
class QSslError;
class QDtlsPrivate;
class Q_NETWORK_EXPORT QDtls : public QObject
{
Q_OBJECT
public:
enum HandshakeState
{
HandshakeNotStarted,
HandshakeInProgress,
PeerVerificationFailed,
HandshakeComplete
};
explicit QDtls(QSslSocket::SslMode mode, QObject *parent = nullptr);
~QDtls();
bool setPeer(const QHostAddress &address, quint16 port,
const QString &verificationName = {});
bool setPeerVerificationName(const QString &name);
QHostAddress peerAddress() const;
quint16 peerPort() const;
QString peerVerificationName() const;
QSslSocket::SslMode sslMode() const;
void setMtuHint(quint16 mtuHint);
quint16 mtuHint() const;
using GeneratorParameters = QDtlsClientVerifier::GeneratorParameters;
bool setCookieGeneratorParameters(const GeneratorParameters ¶ms);
GeneratorParameters cookieGeneratorParameters() const;
bool setDtlsConfiguration(const QSslConfiguration &configuration);
QSslConfiguration dtlsConfiguration() const;
HandshakeState handshakeState() const;
bool doHandshake(QUdpSocket *socket, const QByteArray &dgram = {});
bool handleTimeout(QUdpSocket *socket);
bool resumeHandshake(QUdpSocket *socket);
bool abortHandshake(QUdpSocket *socket);
bool shutdown(QUdpSocket *socket);
bool isConnectionEncrypted() const;
QSslCipher sessionCipher() const;
QSsl::SslProtocol sessionProtocol() const;
qint64 writeDatagramEncrypted(QUdpSocket *socket, const QByteArray &dgram);
QByteArray decryptDatagram(QUdpSocket *socket, const QByteArray &dgram);
QDtlsError dtlsError() const;
QString dtlsErrorString() const;
QList<QSslError> peerVerificationErrors() const;
void ignoreVerificationErrors(const QList<QSslError> &errorsToIgnore);
Q_SIGNALS:
void pskRequired(QSslPreSharedKeyAuthenticator *authenticator);
void handshakeTimeout();
private:
bool startHandshake(QUdpSocket *socket, const QByteArray &dgram);
bool continueHandshake(QUdpSocket *socket, const QByteArray &dgram);
Q_DECLARE_PRIVATE(QDtls)
Q_DISABLE_COPY_MOVE(QDtls)
};
QT_END_NAMESPACE
#endif // QDTLS_H
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