136f8fb550
In VC15 GetVersionEx has been deprecated. In order to continue to support Win2K use the undeprecated VerifyVersionInfoW API (available since Win2K). Inline helper functions used in latest Win10 SDK to simplify code.
101 lines
3.1 KiB
C
101 lines
3.1 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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// The Following is BackPorted from VersionHelpers.h in the 10.0.15063.0 SDK
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static FORCEINLINE BOOL
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IsWindowsVersionOrGreater(WORD wMajorVersion, WORD wMinorVersion, WORD wServicePackMajor)
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{
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OSVERSIONINFOEXW osvi ={ sizeof(osvi), 0, 0, 0, 0,{ 0 }, 0, 0 };
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DWORDLONG const dwlConditionMask = VerSetConditionMask(
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VerSetConditionMask(
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VerSetConditionMask(
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0, VER_MAJORVERSION, VER_GREATER_EQUAL),
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VER_MINORVERSION, VER_GREATER_EQUAL),
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VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
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osvi.dwMajorVersion = wMajorVersion;
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osvi.dwMinorVersion = wMinorVersion;
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osvi.wServicePackMajor = wServicePackMajor;
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return VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, dwlConditionMask) != FALSE;
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}
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static FORCEINLINE BOOL
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IsWindowsXPOrGreater()
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{
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// Assume that _WIN32_WINNT_WINXP (0x0501) not available so use contants.
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return IsWindowsVersionOrGreater(5, 1, 0);
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}
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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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hasRand_s = IsWindowsXPOrGreater();
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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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