reactos/lib/ntdll/rtl/timezone.c

   1 /* $Id: timezone.c,v 1.5 2003/07/11 13:50:23 royce Exp $
   2  *
   3  * COPYRIGHT:         See COPYING in the top level directory
   4  * PROJECT:           ReactOS kernel
   5  * PURPOSE:           Timezone functions
   6  * FILE:              lib/ntdll/rtl/timezone.c
   7  * PROGRAMER:         Eric Kohl
   8  * REVISION HISTORY:
   9  *                    29/05/2001: Created
  10  */
  11
  12 /* INCLUDES *****************************************************************/
  13
  14 #include <ddk/ntddk.h>
  15 #include <ntos/registry.h>
  16 #include <ntos/time.h>
  17
  18 #define NDEBUG
  19 #include <ntdll/ntdll.h>
  20
  21
  22 /* FUNCTIONS *****************************************************************/
  23
  24 /*
  25  * @implemented
  26  */
  27 NTSTATUS STDCALL
  28 RtlQueryTimeZoneInformation(PTIME_ZONE_INFORMATION TimeZoneInformation)
  29 {
  30    HANDLE KeyHandle;
  31    RTL_QUERY_REGISTRY_TABLE QueryTable[8];
  32    UNICODE_STRING StandardName;
  33    UNICODE_STRING DaylightName;
  34    NTSTATUS Status;
  35
  36    DPRINT("RtlQueryTimeZoneInformation()\n");
  37
  38    Status = RtlpGetRegistryHandle(RTL_REGISTRY_CONTROL,
  39                                   L"TimeZoneInformation",
  40                                   TRUE,
  41                                   &KeyHandle);
  42    if (!NT_SUCCESS(Status))
  43      {
  44         DPRINT("RtlpGetRegistryHandle failed (Status %x)\n", Status);
  45         return Status;
  46      }
  47
  48    RtlZeroMemory(QueryTable,
  49                  sizeof(QueryTable));
  50
  51    StandardName.Length = 0;
  52    StandardName.MaximumLength = 32 * sizeof(WCHAR);
  53    StandardName.Buffer = TimeZoneInformation->StandardName;
  54
  55    DaylightName.Length = 0;
  56    DaylightName.MaximumLength = 32 * sizeof(WCHAR);
  57    DaylightName.Buffer = TimeZoneInformation->DaylightName;
  58
  59    QueryTable[0].Name = L"Bias";
  60    QueryTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
  61    QueryTable[0].EntryContext = &TimeZoneInformation->Bias;
  62
  63    QueryTable[1].Name = L"Standard Name";
  64    QueryTable[1].Flags = RTL_QUERY_REGISTRY_DIRECT;
  65    QueryTable[1].EntryContext = &StandardName;
  66
  67    QueryTable[2].Name = L"Standard Bias";
  68    QueryTable[2].Flags = RTL_QUERY_REGISTRY_DIRECT;
  69    QueryTable[2].EntryContext = &TimeZoneInformation->StandardBias;
  70
  71    QueryTable[3].Name = L"Standard Start";
  72    QueryTable[3].Flags = RTL_QUERY_REGISTRY_DIRECT;
  73    QueryTable[3].EntryContext = &TimeZoneInformation->StandardDate;
  74
  75    QueryTable[4].Name = L"Daylight Name";
  76    QueryTable[4].Flags = RTL_QUERY_REGISTRY_DIRECT;
  77    QueryTable[4].EntryContext = &DaylightName;
  78
  79    QueryTable[5].Name = L"Daylight Bias";
  80    QueryTable[5].Flags = RTL_QUERY_REGISTRY_DIRECT;
  81    QueryTable[5].EntryContext = &TimeZoneInformation->DaylightBias;
  82
  83    QueryTable[6].Name = L"Daylight Start";
  84    QueryTable[6].Flags = RTL_QUERY_REGISTRY_DIRECT;
  85    QueryTable[6].EntryContext = &TimeZoneInformation->DaylightDate;
  86
  87    Status = RtlQueryRegistryValues(RTL_REGISTRY_HANDLE,
  88                                    (PWSTR)KeyHandle,
  89                                    QueryTable,
  90                                    NULL,
  91                                    NULL);
  92    NtClose(KeyHandle);
  93
  94    return Status;
  95 }
  96
  97
  98 /*
  99  * @implemented
 100  */
 101 NTSTATUS STDCALL
 102 RtlSetTimeZoneInformation(PTIME_ZONE_INFORMATION TimeZoneInformation)
 103 {
 104    HANDLE KeyHandle;
 105    ULONG Length;
 106    NTSTATUS Status;
 107
 108    DPRINT("RtlSetTimeZoneInformation()\n");
 109
 110    Status = RtlpGetRegistryHandle(RTL_REGISTRY_CONTROL,
 111                                   L"TimeZoneInformation",
 112                                   TRUE,
 113                                   &KeyHandle);
 114    if (!NT_SUCCESS(Status))
 115      {
 116         DPRINT("RtlpGetRegistryHandle failed (Status %x)\n", Status);
 117         return Status;
 118      }
 119
 120    Status = RtlWriteRegistryValue(RTL_REGISTRY_HANDLE,
 121                                   (PWSTR)KeyHandle,
 122                                   L"Bias",
 123                                   REG_DWORD,
 124                                   &TimeZoneInformation->Bias,
 125                                   sizeof(LONG));
 126    if (!NT_SUCCESS(Status))
 127      {
 128         NtClose(KeyHandle);
 129         return Status;
 130      }
 131
 132    Length = (wcslen(TimeZoneInformation->StandardName) + 1) * sizeof(WCHAR);
 133    Status = RtlWriteRegistryValue(RTL_REGISTRY_HANDLE,
 134                                   (PWSTR)KeyHandle,
 135                                   L"Standard Name",
 136                                   REG_SZ,
 137                                   TimeZoneInformation->StandardName,
 138                                   Length);
 139    if (!NT_SUCCESS(Status))
 140      {
 141         NtClose(KeyHandle);
 142         return Status;
 143      }
 144
 145    Status = RtlWriteRegistryValue(RTL_REGISTRY_HANDLE,
 146                                   (PWSTR)KeyHandle,
 147                                   L"Standard Bias",
 148                                   REG_DWORD,
 149                                   &TimeZoneInformation->StandardBias,
 150                                   sizeof(LONG));
 151    if (!NT_SUCCESS(Status))
 152      {
 153         NtClose(KeyHandle);
 154         return Status;
 155      }
 156
 157    Status = RtlWriteRegistryValue(RTL_REGISTRY_HANDLE,
 158                                   (PWSTR)KeyHandle,
 159                                   L"Standard Start",
 160                                   REG_BINARY,
 161                                   &TimeZoneInformation->StandardDate,
 162                                   sizeof(SYSTEMTIME));
 163    if (!NT_SUCCESS(Status))
 164      {
 165         NtClose(KeyHandle);
 166         return Status;
 167      }
 168
 169    Length = (wcslen(TimeZoneInformation->DaylightName) + 1) * sizeof(WCHAR);
 170    Status = RtlWriteRegistryValue(RTL_REGISTRY_HANDLE,
 171                                   (PWSTR)KeyHandle,
 172                                   L"Daylight Name",
 173                                   REG_SZ,
 174                                   TimeZoneInformation->DaylightName,
 175                                   Length);
 176    if (!NT_SUCCESS(Status))
 177      {
 178         NtClose(KeyHandle);
 179         return Status;
 180      }
 181
 182    Status = RtlWriteRegistryValue(RTL_REGISTRY_HANDLE,
 183                                   (PWSTR)KeyHandle,
 184                                   L"Daylight Bias",
 185                                   REG_DWORD,
 186                                   &TimeZoneInformation->DaylightBias,
 187                                   sizeof(LONG));
 188    if (!NT_SUCCESS(Status))
 189      {
 190         NtClose(KeyHandle);
 191         return Status;
 192      }
 193
 194    Status = RtlWriteRegistryValue(RTL_REGISTRY_HANDLE,
 195                                   (PWSTR)KeyHandle,
 196                                   L"Daylight Start",
 197                                   REG_BINARY,
 198                                   &TimeZoneInformation->DaylightDate,
 199                                   sizeof(SYSTEMTIME));
 200
 201    NtClose(KeyHandle);
 202
 203    return Status;
 204 }
 205
 206 /* EOF */