| 1 | /* $Id: time2-win.cpp 72140 2018-05-07 14:21:31Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Time, Windows.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2017 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.alldomusa.eu.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #define LOG_GROUP RTLOGGROUP_TIME
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| 32 | #include <iprt/win/windows.h>
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| 33 |
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| 34 | #include <iprt/time.h>
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| 35 | #include "internal/iprt.h"
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| 36 |
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| 37 | #include <iprt/assert.h>
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| 38 | #include <iprt/err.h>
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| 39 | #include "internal/time.h"
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| 40 |
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| 41 | #include "internal-r3-win.h"
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| 42 |
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| 43 |
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| 44 | RTDECL(int) RTTimeSet(PCRTTIMESPEC pTime)
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| 45 | {
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| 46 | FILETIME FileTime;
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| 47 | SYSTEMTIME SysTime;
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| 48 | if (FileTimeToSystemTime(RTTimeSpecGetNtFileTime(pTime, &FileTime), &SysTime))
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| 49 | {
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| 50 | if (SetSystemTime(&SysTime))
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| 51 | return VINF_SUCCESS;
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| 52 | }
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| 53 | return RTErrConvertFromWin32(GetLastError());
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| 54 | }
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| 55 |
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| 56 |
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| 57 | RTDECL(PRTTIME) RTTimeLocalExplode(PRTTIME pTime, PCRTTIMESPEC pTimeSpec)
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| 58 | {
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| 59 | RTTIMESPEC LocalTime;
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| 60 | if (g_pfnSystemTimeToTzSpecificLocalTime)
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| 61 | {
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| 62 | /*
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| 63 | * FileTimeToLocalFileTime does not do the right thing, so we'll have
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| 64 | * to convert to system time and SystemTimeToTzSpecificLocalTime instead.
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| 65 | */
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| 66 | SYSTEMTIME SystemTimeIn;
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| 67 | FILETIME FileTime;
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| 68 | if (FileTimeToSystemTime(RTTimeSpecGetNtFileTime(pTimeSpec, &FileTime), &SystemTimeIn))
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| 69 | {
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| 70 | SYSTEMTIME SystemTimeOut;
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| 71 | if (g_pfnSystemTimeToTzSpecificLocalTime(NULL /* use current TZI */, &SystemTimeIn, &SystemTimeOut))
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| 72 | {
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| 73 | if (SystemTimeToFileTime(&SystemTimeOut, &FileTime))
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| 74 | {
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| 75 | RTTimeSpecSetNtFileTime(&LocalTime, &FileTime);
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| 76 | pTime = RTTimeExplode(pTime, &LocalTime);
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| 77 | if (pTime)
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| 78 | {
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| 79 | pTime->fFlags = (pTime->fFlags & ~RTTIME_FLAGS_TYPE_MASK) | RTTIME_FLAGS_TYPE_LOCAL;
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| 80 | pTime->offUTC = (LocalTime - *pTimeSpec) / RT_NS_1MIN;
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| 81 | }
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| 82 | return pTime;
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| 83 | }
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| 84 | }
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| 85 | }
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| 86 | }
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| 87 |
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| 88 | /*
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| 89 | * The fallback is to use the current offset.
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| 90 | * (A better fallback would be to use the offset of the same time of the year.)
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| 91 | */
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| 92 | LocalTime = *pTimeSpec;
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| 93 | int64_t LocalUTCOffset = RTTimeLocalDeltaNano();
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| 94 | RTTimeSpecAddNano(&LocalTime, LocalUTCOffset);
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| 95 | pTime = RTTimeExplode(pTime, &LocalTime);
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| 96 | if (pTime)
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| 97 | {
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| 98 | pTime->fFlags = (pTime->fFlags & ~RTTIME_FLAGS_TYPE_MASK) | RTTIME_FLAGS_TYPE_LOCAL;
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| 99 | pTime->offUTC = LocalUTCOffset / RT_NS_1MIN;
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| 100 | }
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| 101 | return pTime;
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| 102 | }
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| 103 |
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