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49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/* Copyright (C) 2007-2010 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Pablo Rincon <pablo.rincon.crespo@gmail.com>
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*
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* Utility function for seeding rand
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*/
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#include "suricata-common.h"
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#include "detect.h"
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#include "threads.h"
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#include "util-debug.h"
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/**
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* \brief create a seed number to pass to rand() , rand_r(), and similars
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* \retval seed for rand()
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*/
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unsigned int RandomTimePreseed(void)
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{
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/* preseed rand() */
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time_t now = time ( 0 );
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unsigned char *p = (unsigned char *)&now;
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unsigned seed = 0;
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size_t ind;
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for ( ind = 0; ind < sizeof now; ind++ )
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seed = seed * ( UCHAR_MAX + 2U ) + p[ind];
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return seed;
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}
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