huwcampbell.com
Reactos
1/*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS system libraries
4 * PURPOSE: Timezone functions
5 * FILE: lib/rtl/timezone.c
6 * PROGRAMER: Eric Kohl
7 */
8
9/* INCLUDES *****************************************************************/
10
11#include <rtl.h>
12
13#define NDEBUG
14#include <debug.h>
15
16/* FUNCTIONS ***************************************************************/
17
18/*
19 * @implemented
20 */
21NTSTATUS
22NTAPI
23RtlQueryTimeZoneInformation(PRTL_TIME_ZONE_INFORMATION TimeZoneInformation)
24{
25 RTL_QUERY_REGISTRY_TABLE QueryTable[8];
26 UNICODE_STRING StandardName;
27 UNICODE_STRING DaylightName;
28 NTSTATUS Status;
29
30 DPRINT("RtlQueryTimeZoneInformation()\n");
31
32 PAGED_CODE_RTL();
33
34 RtlZeroMemory(QueryTable,
35 sizeof(QueryTable));
36
37 StandardName.Length = 0;
38 StandardName.MaximumLength = 32 * sizeof(WCHAR);
39 StandardName.Buffer = TimeZoneInformation->StandardName;
40
41 DaylightName.Length = 0;
42 DaylightName.MaximumLength = 32 * sizeof(WCHAR);
43 DaylightName.Buffer = TimeZoneInformation->DaylightName;
44
45 QueryTable[0].Name = L"Bias";
46 QueryTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
47 QueryTable[0].EntryContext = &TimeZoneInformation->Bias;
48
49 QueryTable[1].Name = L"StandardName";
50 QueryTable[1].Flags = RTL_QUERY_REGISTRY_DIRECT;
51 QueryTable[1].EntryContext = &StandardName;
52
53 QueryTable[2].Name = L"StandardBias";
54 QueryTable[2].Flags = RTL_QUERY_REGISTRY_DIRECT;
55 QueryTable[2].EntryContext = &TimeZoneInformation->StandardBias;
56
57 QueryTable[3].Name = L"StandardStart";
58 QueryTable[3].Flags = RTL_QUERY_REGISTRY_DIRECT;
59 QueryTable[3].EntryContext = &TimeZoneInformation->StandardDate;
60
61 QueryTable[4].Name = L"DaylightName";
62 QueryTable[4].Flags = RTL_QUERY_REGISTRY_DIRECT;
63 QueryTable[4].EntryContext = &DaylightName;
64
65 QueryTable[5].Name = L"DaylightBias";
66 QueryTable[5].Flags = RTL_QUERY_REGISTRY_DIRECT;
67 QueryTable[5].EntryContext = &TimeZoneInformation->DaylightBias;
68
69 QueryTable[6].Name = L"DaylightStart";
70 QueryTable[6].Flags = RTL_QUERY_REGISTRY_DIRECT;
71 QueryTable[6].EntryContext = &TimeZoneInformation->DaylightDate;
72
73 Status = RtlQueryRegistryValues(RTL_REGISTRY_CONTROL,
74 L"TimeZoneInformation",
75 QueryTable,
76 NULL,
77 NULL);
78
79 return Status;
80}
81
82
83/*
84 * @implemented
85 */
86NTSTATUS
87NTAPI
88RtlSetTimeZoneInformation(PRTL_TIME_ZONE_INFORMATION TimeZoneInformation)
89{
90 SIZE_T Length;
91 NTSTATUS Status;
92
93 DPRINT("RtlSetTimeZoneInformation()\n");
94
95 PAGED_CODE_RTL();
96
97 Status = RtlWriteRegistryValue(RTL_REGISTRY_CONTROL,
98 L"TimeZoneInformation",
99 L"Bias",
100 REG_DWORD,
101 &TimeZoneInformation->Bias,
102 sizeof(LONG));
103 if (!NT_SUCCESS(Status))
104 {
105 return Status;
106 }
107
108 Length = (wcslen(TimeZoneInformation->StandardName) + 1) * sizeof(WCHAR);
109 Status = RtlWriteRegistryValue(RTL_REGISTRY_CONTROL,
110 L"TimeZoneInformation",
111 L"StandardName",
112 REG_SZ,
113 TimeZoneInformation->StandardName,
114 (ULONG)Length);
115 if (!NT_SUCCESS(Status))
116 {
117 return Status;
118 }
119
120 Status = RtlWriteRegistryValue(RTL_REGISTRY_CONTROL,
121 L"TimeZoneInformation",
122 L"StandardBias",
123 REG_DWORD,
124 &TimeZoneInformation->StandardBias,
125 sizeof(LONG));
126 if (!NT_SUCCESS(Status))
127 {
128 return Status;
129 }
130
131 Status = RtlWriteRegistryValue(RTL_REGISTRY_CONTROL,
132 L"TimeZoneInformation",
133 L"StandardStart",
134 REG_BINARY,
135 &TimeZoneInformation->StandardDate,
136 sizeof(SYSTEMTIME));
137 if (!NT_SUCCESS(Status))
138 {
139 return Status;
140 }
141
142 Length = (wcslen(TimeZoneInformation->DaylightName) + 1) * sizeof(WCHAR);
143 Status = RtlWriteRegistryValue(RTL_REGISTRY_CONTROL,
144 L"TimeZoneInformation",
145 L"DaylightName",
146 REG_SZ,
147 TimeZoneInformation->DaylightName,
148 (ULONG)Length);
149 if (!NT_SUCCESS(Status))
150 {
151 return Status;
152 }
153
154 Status = RtlWriteRegistryValue(RTL_REGISTRY_CONTROL,
155 L"TimeZoneInformation",
156 L"DaylightBias",
157 REG_DWORD,
158 &TimeZoneInformation->DaylightBias,
159 sizeof(LONG));
160 if (!NT_SUCCESS(Status))
161 {
162 return Status;
163 }
164
165 Status = RtlWriteRegistryValue(RTL_REGISTRY_CONTROL,
166 L"TimeZoneInformation",
167 L"DaylightStart",
168 REG_BINARY,
169 &TimeZoneInformation->DaylightDate,
170 sizeof(SYSTEMTIME));
171
172 return Status;
173}
174
175/* EOF */