Leaked source code of windows server 2003
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/**********************************************************************/
/** Microsoft Windows/NT **/
/** Copyright(c) Microsoft Corporation, 1997 - 1998 **/
/**********************************************************************/
/*
timeofday.cpp
Implementation of convenient functions to start timeofday dialog
FILE HISTORY:
*/
#include "stdafx.h"
#include "timeofday.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
// hour map ( one bit for an hour of a week )
static BYTE bitSetting[8] = { 0x80, 0x40, 0x20, 0x10, 0x8, 0x4, 0x2, 0x1};
//+---------------------------------------------------------------------------
//
// Function: ReverseHourMap
//
// Synopsis: reverse each byte in the hour map
//
// we have to do this because LogonUI changes the way HourMap is stored(they
// reversed all the bit. We need to do this so our conversion code can leave
// intact.
//
// Arguments: [in] BYTE* map - hour map
// [in] INT nByte - how many bytes are in this hour map
//
// History: byao 4/10/98 10:33:57 PM
//
//+---------------------------------------------------------------------------
void ReverseHourMap(BYTE *map, int nByte)
{
int i, j, temp;
for (i=0; i<nByte; i++)
{
temp = 0;
for (j=0;j<8;j++)
{
// set the value temp
if ( map[i] & bitSetting[j] )
{
temp |= bitSetting[7-j];
}
}
map[i] = (BYTE) temp;
}
}
void ShiftHourMap(BYTE* map, int nByte, int nShiftByte)
{
ASSERT(nShiftByte);
ASSERT(nByte > abs(nShiftByte));
nShiftByte = (nByte + nShiftByte) % nByte;
BYTE* pTemp = (BYTE*)_alloca(nShiftByte);
// put the tail to the buffer
memmove(pTemp, map + nByte - nShiftByte, nShiftByte);
// shift the body to right
memmove(map + nShiftByte, map, nByte - nShiftByte);
// put the tail back to the head
memcpy(map, pTemp, nShiftByte);
}
HRESULT OpenTimeOfDayDlgEx(
HWND hwndParent, // parent window
BYTE ** pprgbData, // pointer to pointer to array of 21 bytes
LPCTSTR pszTitle, // dialog title
DWORD dwFlags
)
{
PFN_LOGONSCHEDULEDIALOGEX pfnLogonScheduleDialog = NULL;
HMODULE hLogonScheduleDLL = NULL;
HRESULT hr = S_OK;
// ReverseHourMap() will reverse each byte of the hour map, basically
// reverse every bit in the byte.
// we have to do this because LogonUI changes the way HourMap is stored(they
// reversed all the bit. We need to do this so our conversion code can leave
// intact.
//
// We reverse it here so it can be understood by the LogonSchedule api
//
ReverseHourMap(*pprgbData,21);
hLogonScheduleDLL = LoadLibrary(LOGHOURSDLL);
if ( NULL == hLogonScheduleDLL )
{
hr = HRESULT_FROM_WIN32(GetLastError());
AfxMessageBox(IDS_ERR_TOD_LOADLOGHOURDLL);
goto L_ERR;
}
// load the API pointer
pfnLogonScheduleDialog = (PFN_LOGONSCHEDULEDIALOGEX) GetProcAddress(hLogonScheduleDLL, DIALINHOURSEXAPI);
if ( NULL == pfnLogonScheduleDialog )
{
hr = HRESULT_FROM_WIN32(GetLastError());
AfxMessageBox(IDS_ERR_TOD_FINDLOGHOURSAPI);
goto L_ERR;
}
//
// now we do have this DLL, call the API
//
hr = pfnLogonScheduleDialog(hwndParent, pprgbData, pszTitle, dwFlags);
if (FAILED(hr)) goto L_ERR;
// We need to reverse it first so our conversion code can understand it.
//
ReverseHourMap(*pprgbData,21);
L_ERR:
if(hLogonScheduleDLL != NULL)
FreeLibrary(hLogonScheduleDLL);
return hr;
}