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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTRANSPORTAUTH_QWS_P_H
#define QTRANSPORTAUTH_QWS_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/qglobal.h>
#ifndef QT_NO_SXE
#include "qtransportauth_qws.h"
#include "qtransportauthdefs_qws.h"
#include "qbuffer.h"
#include <qmutex.h>
#include <qdatetime.h>
#include "private/qobject_p.h"
#include <QtCore/qcache.h>
QT_BEGIN_NAMESPACE
// Uncomment to generate debug output
// #define QTRANSPORTAUTH_DEBUG 1
#ifdef QTRANSPORTAUTH_DEBUG
void hexstring( char *buf, const unsigned char* key, size_t sz );
#endif
// proj id for ftok usage in sxe
#define SXE_PROJ 10022
/*!
\internal
memset for security purposes, guaranteed not to be optimized away
http://www.faqs.org/docs/Linux-HOWTO/Secure-Programs-HOWTO.html
*/
void *guaranteed_memset(void *v,int c,size_t n);
class QUnixSocketMessage;
/*!
\internal
\class AuthCookie
Struct to carry process authentication key and id
*/
#define QSXE_HEADER_LEN 24
/*!
\macro AUTH_ID
Macro to manage authentication header. Format of header is:
\table
\header \i BYTES \i CONTENT
\row \i 0-3 \i magic numbers
\row \i 4 \i length of authenticated data (max 255 bytes)
\row i\ 5 \i reserved
\row \i 6-21 \i MAC digest, or shared secret in case of simple auth
\row \i 22 \i program id
\row \i 23 \i sequence number
\endtable
Total length of the header is 24 bytes
However this may change. Instead of coding these numbers use the AUTH_ID,
AUTH_KEY, AUTH_DATA and AUTH_SPACE macros.
*/
#define AUTH_ID(k) ((unsigned char)(k[QSXE_KEY_LEN]))
#define AUTH_KEY(k) ((unsigned char *)(k))
#define AUTH_DATA(x) (unsigned char *)((x) + QSXE_HEADER_LEN)
#define AUTH_SPACE(x) ((x) + QSXE_HEADER_LEN)
#define QSXE_LEN_IDX 4
#define QSXE_KEY_IDX 6
#define QSXE_PROG_IDX 22
#define QSXE_SEQ_IDX 23
class SxeRegistryLocker : public QObject
{
Q_OBJECT
public:
SxeRegistryLocker( QObject * );
~SxeRegistryLocker();
bool success() const { return m_success; }
private:
bool m_success;
QObject *m_reg;
};
class QTransportAuthPrivate : public QObjectPrivate
{
Q_DECLARE_PUBLIC(QTransportAuth)
public:
QTransportAuthPrivate();
~QTransportAuthPrivate();
const unsigned char *getClientKey( unsigned char progId );
void invalidateClientKeyCache();
bool keyInitialised;
QString m_logFilePath;
QString m_keyFilePath;
QObject *m_packageRegistry;
AuthCookie authKey;
QCache<unsigned char, char> keyCache;
QHash< QObject*, QIODevice*> buffersByClient;
QMutex keyfileMutex;
};
/*!
\internal
Enforces the False Authentication Rate. If more than 4 authentications
are received per minute the sxemonitor is notified that the FAR has been exceeded
*/
class FAREnforcer
{
public:
static FAREnforcer *getInstance();
void logAuthAttempt( QDateTime time = QDateTime::currentDateTime() );
void reset();
#ifndef TEST_FAR_ENFORCER
private:
#endif
FAREnforcer();
FAREnforcer( const FAREnforcer & );
FAREnforcer &operator=(FAREnforcer const & );
static const QString FARMessage;
static const int minutelyRate;
static const QString SxeTag;
static const int minute;
QList<QDateTime> authAttempts;
};
QT_END_NAMESPACE
#endif // QT_NO_SXE
#endif // QTRANSPORTAUTH_QWS_P_H
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