33984e72ab
Algorithmic complexity attacks against hash tables have been known since 2003 (cf. [1, 2]), and they have been left unpatched for years until the 2011 attacks [3] against many libraries / (reference) implementations of programming languages. This patch adds a global integer, to be used as a seed for the hash function itself. The seed is randomly initialized the first time a QHash detaches from shared_null. Right now the seed is not used at all -- another patch will modify qHash to make use of it. [1] http://www.cs.rice.edu/~scrosby/hash/CrosbyWallach_UsenixSec2003.pdf [2] http://perldoc.perl.org/perlsec.html#Algorithmic-Complexity-Attacks [3] http://www.ocert.org/advisories/ocert-2011-003.html Task-number: QTBUG-23529 Change-Id: I7519e4c02b9c2794d1c14079b01330eb356e9c65 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the qmake application of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QMAKE_PCH_H
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#define QMAKE_PCH_H
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// for rand_s, _CRT_RAND_S must be #defined before #including stdlib.h.
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// put it at the beginning so some indirect inclusion doesn't break it
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#ifndef _CRT_RAND_S
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#define _CRT_RAND_S
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#endif
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#include <qglobal.h>
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#ifdef Q_OS_WIN
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# define _POSIX_
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# include <limits.h>
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# undef _POSIX_
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#endif
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#include <stdio.h>
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//#include "makefile.h"
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//#include "meta.h"
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#include <qfile.h>
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//#include "winmakefile.h"
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//#include <qtextstream.h>
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//#include "project.h"
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#include <qstring.h>
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#include <qstringlist.h>
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#include <qhash.h>
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#include <time.h>
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#include <stdlib.h>
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#include <qregexp.h>
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QT_BEGIN_NAMESPACE
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//#include <qdir.h>
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//#include "option.h"
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QT_END_NAMESPACE
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#endif
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