1 krisbash 1.1 /*
  2              **==============================================================================
  3              **
  4              ** Open Management Infrastructure (OMI)
  5              **
  6              ** Copyright (c) Microsoft Corporation
  7              ** 
  8              ** Licensed under the Apache License, Version 2.0 (the "License"); you may not 
  9              ** use this file except in compliance with the License. You may obtain a copy 
 10              ** of the License at 
 11              **
 12              **     http://www.apache.org/licenses/LICENSE-2.0 
 13              **
 14              ** THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 15              ** KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED 
 16              ** WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, 
 17              ** MERCHANTABLITY OR NON-INFRINGEMENT. 
 18              **
 19              ** See the Apache 2 License for the specific language governing permissions 
 20              ** and limitations under the License.
 21              **
 22 krisbash 1.1 **==============================================================================
 23              */
 24              
 25              #include "cpu.h"
 26              
 27              _Success_(return == 0)
 28              int CPU_GetLocalTimestamp(
 29                  _Out_ PAL_Datetime* current)
 30              {
 31              #ifdef _MSC_VER
 32                  SYSTEMTIME st;
 33                  TIME_ZONE_INFORMATION zone;
 34                  DWORD tz;
 35              
 36                  GetLocalTime(&st);
 37                  tz = GetTimeZoneInformation(&zone);
 38                  if (tz == TIME_ZONE_ID_INVALID)
 39                      return -1;
 40              
 41                  current->isTimestamp = PAL_TRUE;
 42                  /* TODO: Valid year ranges for SYSTEMTIME and MI_Timestamp are different! */
 43 krisbash 1.1     // this is probably not a big problem for actual time.The range of SystemTime.wYear (1601-30827) is not a subset of 
 44                  // MI_Timestamp.year (0-9999 according to DMTF + verified by asserts in Mint + assumed in various integer overflow 
 45                  // considerations for arithmetic/comparison built-ins)
 46                  current->u.timestamp.year = st.wYear;
 47                  current->u.timestamp.month = st.wMonth;
 48                  current->u.timestamp.day = st.wDay;
 49                  current->u.timestamp.hour = st.wHour;
 50                  current->u.timestamp.minute = st.wMinute;
 51                  current->u.timestamp.second = st.wSecond;
 52                  current->u.timestamp.microseconds = st.wMilliseconds * 1000;
 53                  current->u.timestamp.utc = -zone.Bias;
 54              
 55                  if (tz == TIME_ZONE_ID_DAYLIGHT)
 56                      current->u.timestamp.utc -= zone.DaylightBias;
 57                  else
 58                      current->u.timestamp.utc -= zone.StandardBias;
 59              
 60                  return 0;
 61              #else
 62                  struct timeval tv;
 63                  struct tm tm;
 64 krisbash 1.1 
 65                  gettimeofday(&tv, NULL);
 66                  localtime_r(&tv.tv_sec, &tm);
 67              
 68                  current->isTimestamp = PAL_TRUE;
 69                  current->u.timestamp.year = 1900 + tm.tm_year; // tm.tm_year is the number of years since 1900.
 70                  current->u.timestamp.month = tm.tm_mon + 1; // tm.tm_mon is the number of months since January, in the range 0 to 11.
 71                  current->u.timestamp.day = tm.tm_mday;
 72                  current->u.timestamp.hour = tm.tm_hour;
 73                  current->u.timestamp.minute = tm.tm_min;
 74                  current->u.timestamp.second = tm.tm_sec;
 75                  current->u.timestamp.microseconds = tv.tv_usec;
 76                  current->u.timestamp.utc = -timezone / 60;
 77                  return 0;
 78              #endif
 79              }
 80              
 81              _Success_(return == 0)
 82              int CPU_GetUtcTimestamp(
 83                  _Out_ PAL_Datetime* current)
 84              {
 85 krisbash 1.1 #ifdef _MSC_VER
 86                  SYSTEMTIME st;
 87              
 88                  GetSystemTime(&st);
 89              
 90                  current->isTimestamp = PAL_TRUE;
 91                  /* TODO: Valid year ranges for SYSTEMTIME and MI_Timestamp are different! */
 92                  // this is probably not a big problem for actual time.The range of SystemTime.wYear (1601-30827) is not a subset of 
 93                  // MI_Timestamp.year (0-9999 according to DMTF + verified by asserts in Mint + assumed in various integer overflow 
 94                  // considerations for arithmetic/comparison built-ins)
 95                  current->u.timestamp.year = st.wYear;
 96                  current->u.timestamp.month = st.wMonth;
 97                  current->u.timestamp.day = st.wDay;
 98                  current->u.timestamp.hour = st.wHour;
 99                  current->u.timestamp.minute = st.wMinute;
100                  current->u.timestamp.second = st.wSecond;
101                  current->u.timestamp.microseconds = st.wMilliseconds * 1000;
102                  current->u.timestamp.utc = 0;
103                  return 0;
104              #else
105                  struct timeval tv;
106 krisbash 1.1     struct tm tm;
107              
108                  gettimeofday(&tv, NULL);
109                  gmtime_r(&tv.tv_sec, &tm);
110              
111                  current->isTimestamp = PAL_TRUE;
112                  current->u.timestamp.year = tm.tm_year;
113                  current->u.timestamp.month = tm.tm_mon + 1; // tm.tm_mon is the number of months since January, in the range 0 to 11.
114                  current->u.timestamp.day = tm.tm_mday;
115                  current->u.timestamp.hour = tm.tm_hour;
116                  current->u.timestamp.minute = tm.tm_min;
117                  current->u.timestamp.second = tm.tm_sec;
118                  current->u.timestamp.microseconds = tv.tv_usec;
119                  current->u.timestamp.utc = 0;
120                  return 0;
121              #endif
122              }
123