80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/*
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* Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <config.h>
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#include "roken.h"
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#ifdef HAVE_WIN32_RAND_S
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static int hasRand_s = 1;
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#endif
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void ROKEN_LIB_FUNCTION
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rk_random_init(void)
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{
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#if defined(HAVE_ARC4RANDOM)
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arc4random_stir();
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#elif defined(HAVE_SRANDOMDEV)
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srandomdev();
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#elif defined(HAVE_RANDOM)
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srandom(time(NULL));
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#else
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# ifdef HAVE_WIN32_RAND_S
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OSVERSIONINFO osInfo;
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osInfo.dwOSVersionInfoSize = sizeof(osInfo);
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hasRand_s =
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(GetVersionEx(&osInfo)
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&& ((osInfo.dwMajorVersion > 5) ||
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(osInfo.dwMajorVersion == 5) && (osInfo.dwMinorVersion >= 1)));
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# endif
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srand (time(NULL));
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#endif
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}
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#ifdef HAVE_WIN32_RAND_S
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unsigned int ROKEN_LIB_FUNCTION
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rk_random(void)
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{
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if (hasRand_s) {
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unsigned int n;
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int code;
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code = rand_s(&n);
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if (code == 0)
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return n;
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}
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return rand();
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}
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#endif
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