Mercurial > trustbridge > nss-cmake-static
comparison nspr/pr/src/md/windows/w32rng.c @ 0:1e5118fa0cb1
This is NSS with a Cmake Buildsyste
To compile a static NSS library for Windows we've used the
Chromium-NSS fork and added a Cmake buildsystem to compile
it statically for Windows. See README.chromium for chromium
changes and README.trustbridge for our modifications.
| author | Andre Heinecke <andre.heinecke@intevation.de> |
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| date | Mon, 28 Jul 2014 10:47:06 +0200 |
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| -1:000000000000 | 0:1e5118fa0cb1 |
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include <windows.h> | |
| 7 #include <time.h> | |
| 8 #include <io.h> | |
| 9 #include <sys/types.h> | |
| 10 #include <sys/stat.h> | |
| 11 #include <stdio.h> | |
| 12 #include <primpl.h> | |
| 13 | |
| 14 static BOOL | |
| 15 CurrentClockTickTime(LPDWORD lpdwHigh, LPDWORD lpdwLow) | |
| 16 { | |
| 17 LARGE_INTEGER liCount; | |
| 18 | |
| 19 if (!QueryPerformanceCounter(&liCount)) | |
| 20 return FALSE; | |
| 21 | |
| 22 *lpdwHigh = liCount.u.HighPart; | |
| 23 *lpdwLow = liCount.u.LowPart; | |
| 24 return TRUE; | |
| 25 } | |
| 26 | |
| 27 extern PRSize _PR_MD_GetRandomNoise( void *buf, PRSize size ) | |
| 28 { | |
| 29 DWORD dwHigh, dwLow, dwVal; | |
| 30 size_t n = 0; | |
| 31 size_t nBytes; | |
| 32 time_t sTime; | |
| 33 | |
| 34 if (size <= 0) | |
| 35 return 0; | |
| 36 | |
| 37 CurrentClockTickTime(&dwHigh, &dwLow); | |
| 38 | |
| 39 // get the maximally changing bits first | |
| 40 nBytes = sizeof(dwLow) > size ? size : sizeof(dwLow); | |
| 41 memcpy((char *)buf, &dwLow, nBytes); | |
| 42 n += nBytes; | |
| 43 size -= nBytes; | |
| 44 | |
| 45 if (size <= 0) | |
| 46 return n; | |
| 47 | |
| 48 nBytes = sizeof(dwHigh) > size ? size : sizeof(dwHigh); | |
| 49 memcpy(((char *)buf) + n, &dwHigh, nBytes); | |
| 50 n += nBytes; | |
| 51 size -= nBytes; | |
| 52 | |
| 53 if (size <= 0) | |
| 54 return n; | |
| 55 | |
| 56 // get the number of milliseconds that have elapsed since Windows started | |
| 57 dwVal = GetTickCount(); | |
| 58 | |
| 59 nBytes = sizeof(dwVal) > size ? size : sizeof(dwVal); | |
| 60 memcpy(((char *)buf) + n, &dwVal, nBytes); | |
| 61 n += nBytes; | |
| 62 size -= nBytes; | |
| 63 | |
| 64 if (size <= 0) | |
| 65 return n; | |
| 66 | |
| 67 // get the time in seconds since midnight Jan 1, 1970 | |
| 68 time(&sTime); | |
| 69 nBytes = sizeof(sTime) > size ? size : sizeof(sTime); | |
| 70 memcpy(((char *)buf) + n, &sTime, nBytes); | |
| 71 n += nBytes; | |
| 72 | |
| 73 return n; | |
| 74 } | |
| 75 |