Leaked source code of windows server 2003
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361 lines
9.4 KiB

/*
* Utility program to query and set the current time zone settings
* in the registry.
*
* tz [-b Bias] [-s Name Bias Date] [-d Name Bias Date]
*
*/
#include "tz.h"
void
Usage( void )
{
fprintf( stderr, "usage: TZ [-b Bias] [-s Name Bias Date] [-d Name Bias Date]\n" );
fprintf( stderr, "Where...\n" );
fprintf( stderr, " Default with no parameters is to display current time zone settings.\n" );
exit( 1 );
}
char KeyValueBuffer[ 4096 ];
char *Order[] = {
"first",
"second",
"third",
"fourth",
"last"
};
char *DayOfWeek[] = {
"Sunday",
"Monday",
"Tuesday",
"Wednesday",
"Thursday",
"Friday",
"Saturday"
};
char *Months[] = {
"January",
"February",
"March",
"April",
"May",
"June",
"July",
"August",
"September",
"October",
"November",
"December"
};
#define NUMBER_DATE_TIME_FIELDS 6
BOOL
ParseTimeZoneInfo(
IN LPSTR NameIn,
OUT PWSTR NameOut,
IN LPSTR BiasIn,
OUT PLONG BiasOut,
IN LPSTR StartIn,
OUT PTIME_FIELDS StartOut
)
{
LPSTR s, s1;
ULONG FieldIndexes[ NUMBER_DATE_TIME_FIELDS ] = {1, 2, 0, 3, 4, 7};
//
// Month/Day/Year HH:MM DayOfWeek
//
ULONG CurrentField = 0;
PCSHORT Fields;
LPSTR Field;
ULONG FieldValue;
MultiByteToWideChar( CP_ACP,
0,
NameIn,
strlen( NameIn ),
NameOut,
32
);
*BiasOut = atoi( BiasIn );
s = StartIn;
RtlZeroMemory( StartOut, sizeof( *StartOut ) );
Fields = &StartOut->Year;
while (*s) {
if (CurrentField >= 7) {
return( FALSE );
}
while (*s == ' ') {
s++;
}
Field = s;
while (*s) {
if (CurrentField == (NUMBER_DATE_TIME_FIELDS-1)) {
}
else
if (*s < '0' || *s > '9') {
break;
}
s++;
}
if (*s) {
s++;
}
if (CurrentField == (NUMBER_DATE_TIME_FIELDS-1)) {
if (strlen( Field ) < 3) {
printf( "TZ: %s invalid day of week length\n", Field );
return FALSE;
}
if (StartOut->Year != 0) {
printf( "TZ: Year must be zero to specify day of week\n" );
return FALSE;
}
if (!_strnicmp( Field, "SUN", 3 )) {
FieldValue = 0;
}
else
if (!_strnicmp( Field, "MON", 3 )) {
FieldValue = 1;
}
else
if (!_strnicmp( Field, "TUE", 3 )) {
FieldValue = 2;
}
else
if (!_strnicmp( Field, "WED", 3 )) {
FieldValue = 3;
}
else
if (!_strnicmp( Field, "THU", 3 )) {
FieldValue = 4;
}
else
if (!_strnicmp( Field, "FRI", 3 )) {
FieldValue = 5;
}
else
if (!_strnicmp( Field, "SAT", 3 )) {
FieldValue = 6;
}
else {
printf( "TZ: %s invalid day of week\n", Field );
return FALSE;
}
}
else {
FieldValue = atoi( Field );
}
Fields[ FieldIndexes[ CurrentField++ ] ] = (CSHORT)FieldValue;
}
if (StartOut->Year == 0) {
if (StartOut->Day > 5) {
printf( "TZ: Day must be 0 - 5 if year is zero.\n" );
return FALSE;
}
}
else
if (StartOut->Year < 100) {
StartOut->Year += 1900;
}
return TRUE;
}
int
__cdecl
main(
int argc,
char *argv[]
)
{
int i, j;
LPSTR s, s1, s2, s3, AmPm;
NTSTATUS Status;
RTL_TIME_ZONE_INFORMATION tzi;
BOOLEAN InfoModified = FALSE;
ConvertAppToOem( argc, argv );
if (argc < 1) {
Usage();
}
Status = RtlQueryTimeZoneInformation( &tzi );
if (!NT_SUCCESS( Status )) {
fprintf( stderr, "TZ: Unable to query current information.\n" );
}
while (--argc) {
s = *++argv;
if (*s == '-' || *s == '/') {
while (*++s) {
switch( tolower( *s ) ) {
case 'b':
if (argc) {
--argc;
tzi.Bias = atoi( *++argv );
InfoModified = TRUE;
}
else {
Usage();
}
break;
case 's':
if (argc >= 3) {
argc -= 3;
s1 = *++argv;
s2 = *++argv;
s3 = *++argv;
if (ParseTimeZoneInfo( s1, tzi.StandardName,
s2, &tzi.StandardBias,
s3, &tzi.StandardStart
)
) {
InfoModified = TRUE;
}
else {
Usage();
}
}
else {
Usage();
}
break;
case 'd':
if (argc >= 3) {
argc -= 3;
s1 = *++argv;
s2 = *++argv;
s3 = *++argv;
if (ParseTimeZoneInfo( s1, tzi.DaylightName,
s2, &tzi.DaylightBias,
s3, &tzi.DaylightStart
)
) {
InfoModified = TRUE;
}
else {
Usage();
}
}
else {
Usage();
}
break;
default: Usage();
}
}
}
else {
Usage();
}
}
if (InfoModified) {
Status = RtlSetTimeZoneInformation( &tzi );
if (!NT_SUCCESS( Status )) {
fprintf( stderr, "TZ: Unable to set new information.\n" );
}
}
printf( "Time Zone Information.\n" );
printf( " Bias from UTC: %u:%02u\n", tzi.Bias / 60, tzi.Bias % 60 );
printf( " Standard time:\n" );
printf( " Name: %ws\n", &tzi.StandardName );
printf( " Bias: %d:%02d\n", tzi.StandardBias / 60, abs( tzi.StandardBias % 60 ) );
if (tzi.StandardStart.Month != 0) {
if (tzi.StandardStart.Hour > 12) {
AmPm = "pm";
tzi.StandardStart.Hour -= 12;
}
else {
AmPm = "am";
}
printf( " Start: %02u:%02u%s", tzi.StandardStart.Hour, tzi.StandardStart.Minute, AmPm );
if (tzi.StandardStart.Year == 0) {
printf( " %s %s of %s\n",
Order[ tzi.StandardStart.Day - 1 ],
DayOfWeek[ tzi.StandardStart.Weekday ],
Months[ tzi.StandardStart.Month - 1 ]
);
}
else {
printf( "%s %02u, %u\n",
Months[ tzi.StandardStart.Month - 1 ],
tzi.StandardStart.Month, tzi.StandardStart.Day, tzi.StandardStart.Year
);
}
}
printf( " Daylight time:\n" );
printf( " Name: %ws\n", &tzi.DaylightName );
printf( " Bias: %d:%02d\n", tzi.DaylightBias / 60, abs( tzi.DaylightBias % 60 ) );
if (tzi.DaylightStart.Month != 0) {
if (tzi.DaylightStart.Hour > 12) {
AmPm = "pm";
tzi.DaylightStart.Hour -= 12;
}
else {
AmPm = "am";
}
printf( " Start: %02u:%02u%s", tzi.DaylightStart.Hour, tzi.DaylightStart.Minute, AmPm );
if (tzi.DaylightStart.Year == 0) {
printf( " %s %s of %s\n",
Order[ tzi.DaylightStart.Day - 1 ],
DayOfWeek[ tzi.DaylightStart.Weekday ],
Months[ tzi.DaylightStart.Month - 1 ]
);
}
else {
printf( "%s %02u, %u\n",
Months[ tzi.DaylightStart.Month - 1 ],
tzi.DaylightStart.Month, tzi.DaylightStart.Day, tzi.DaylightStart.Year
);
}
}
return( 0 );
}