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windows-nt/Source/XPSP1/NT/com/oleutest/letest/ole2ui/regdb.c

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2020-09-26 03:20:57 -05:00
/*
* REGDB.C
*
* Functions to query the registration database
*
* OleStdGetMiscStatusOfClass
* OleStdGetDefaultFileFormatOfClass
* OleStdGetAuxUserType
* OleStdGetUserTypeOfClass
*
* (c) Copyright Microsoft Corp. 1992-1993 All Rights Reserved
*
*/
#define STRICT 1
#include "ole2ui.h"
#include "common.h"
#include <ctype.h>
OLEDBGDATA
// Replacement for stdlib atol,
// which didn't work and doesn't take far pointers.
// Must be tolerant of leading spaces.
//
//
static LONG Atol(LPTSTR lpsz)
{
signed int sign = +1;
UINT base = 10;
LONG l = 0;
if (NULL==lpsz)
{
OleDbgAssert (0);
return 0;
}
while (isspace(*lpsz))
lpsz++;
if (*lpsz=='-')
{
lpsz++;
sign = -1;
}
if (lpsz[0]==TEXT('0') && lpsz[1]==TEXT('x'))
{
base = 16;
lpsz+=2;
}
if (base==10)
{
while (isdigit(*lpsz))
{
l = l * base + *lpsz - '0';
lpsz++;
}
}
else
{
OleDbgAssert (base==16);
while (isxdigit(*lpsz))
{
l = l * base + isdigit(*lpsz) ? *lpsz - '0' : toupper(*lpsz) - 'A' + 10;
lpsz++;
}
}
return l * sign;
}
/*
* OleStdGetUserTypeOfClass(REFCLSID, LPSTR, UINT, HKEY)
*
* Purpose:
* Returns the user type (human readable class name) of the specified class.
*
* Parameters:
* rclsid pointer to the clsid to retrieve user type of.
* lpszUserType pointer to buffer to return user type in.
* cch length of buffer pointed to by lpszUserType
* hKey hKey for reg db - if this is NULL, then we
* open and close the reg db within this function. If it
* is non-NULL, then we assume it's a valid key to the
* \ root and use it without closing it. (useful
* if you're doing lots of reg db stuff).
*
* Return Value:
* UINT Number of characters in returned string. 0 on error.
*
*/
STDAPI_(UINT) OleStdGetUserTypeOfClass(REFCLSID rclsid, LPTSTR lpszUserType, UINT cch, HKEY hKey)
{
LONG dw;
LONG lRet;
LPSTR lpszCLSID, lpszProgID;
BOOL fFreeProgID = FALSE;
BOOL bCloseRegDB = FALSE;
TCHAR szKey[128];
LPMALLOC lpIMalloc;
if (!lpszUserType)
return 0;
*lpszUserType = TEXT('\0');
if (hKey == NULL)
{
//Open up the root key.
lRet=RegOpenKey(HKEY_CLASSES_ROOT, NULL, &hKey);
if ((LONG)ERROR_SUCCESS!=lRet)
return (UINT)FALSE;
bCloseRegDB = TRUE;
}
// Get a string containing the class name
StringFromCLSIDA(rclsid, &lpszCLSID);
wsprintf(szKey, TEXT("CLSID\\%s"), lpszCLSID);
dw=cch;
lRet = RegQueryValue(hKey, szKey, lpszUserType, &dw);
if ((LONG)ERROR_SUCCESS!=lRet) {
// Load 'Unknown Source' and 'Unknown Type' strings
dw = (LONG)LoadString(ghInst, IDS_PSUNKNOWNTYPE, lpszUserType, cch);
}
if ( ((LONG)ERROR_SUCCESS!=lRet) && (CoIsOle1Class(rclsid)) )
{
// We've got an OLE 1.0 class, so let's try to get the user type
// name from the ProgID entry.
ProgIDFromCLSIDA(rclsid, &lpszProgID);
fFreeProgID = TRUE;
dw = cch;
lRet = RegQueryValue(hKey, lpszProgID, lpszUserType, &dw);
if ((LONG)ERROR_SUCCESS != lRet)
dw = 0;
}
if (NOERROR == CoGetMalloc(MEMCTX_TASK, &lpIMalloc))
{
if (fFreeProgID)
lpIMalloc->lpVtbl->Free(lpIMalloc, (LPVOID)lpszProgID);
lpIMalloc->lpVtbl->Free(lpIMalloc, (LPVOID)lpszCLSID);
lpIMalloc->lpVtbl->Release(lpIMalloc);
}
if (bCloseRegDB)
RegCloseKey(hKey);
return (UINT)dw;
}
/*
* OleStdGetAuxUserType(RCLSID, WORD, LPSTR, int, HKEY)
*
* Purpose:
* Returns the specified AuxUserType from the reg db.
*
* Parameters:
* rclsid pointer to the clsid to retrieve aux user type of.
* hKey hKey for reg db - if this is NULL, then we
* open and close the reg db within this function. If it
* is non-NULL, then we assume it's a valid key to the
* \ root and use it without closing it. (useful
* if you're doing lots of reg db stuff).
* wAuxUserType which aux user type field to look for. In 4/93 release
* 2 is short name and 3 is exe name.
* lpszUserType pointer to buffer to return user type in.
* cch length of buffer pointed to by lpszUserType
*
* Return Value:
* UINT Number of characters in returned string. 0 on error.
*
*/
STDAPI_(UINT) OleStdGetAuxUserType(REFCLSID rclsid,
WORD wAuxUserType,
LPTSTR lpszAuxUserType,
int cch,
HKEY hKey)
{
HKEY hThisKey;
BOOL fCloseRegDB = FALSE;
LONG dw;
LRESULT lRet;
LPTSTR lpszCLSID;
LPMALLOC lpIMalloc;
TCHAR szKey[OLEUI_CCHKEYMAX];
TCHAR szTemp[32];
lpszAuxUserType[0] = TEXT('\0');
if (NULL == hKey)
{
lRet = RegOpenKey(HKEY_CLASSES_ROOT, NULL, &hThisKey);
if (ERROR_SUCCESS != lRet)
return 0;
}
else
hThisKey = hKey;
StringFromCLSIDA(rclsid, &lpszCLSID);
lstrcpy(szKey, TEXT("CLSID\\"));
lstrcat(szKey, lpszCLSID);
wsprintf(szTemp, TEXT("\\AuxUserType\\%d"), wAuxUserType);
lstrcat(szKey, szTemp);
dw = cch;
lRet = RegQueryValue(hThisKey, szKey, lpszAuxUserType, &dw);
if (ERROR_SUCCESS != lRet) {
dw = 0;
lpszAuxUserType[0] = TEXT('\0');
}
if (fCloseRegDB)
RegCloseKey(hThisKey);
if (NOERROR == CoGetMalloc(MEMCTX_TASK, &lpIMalloc))
{
lpIMalloc->lpVtbl->Free(lpIMalloc, (LPVOID)lpszCLSID);
lpIMalloc->lpVtbl->Release(lpIMalloc);
}
return (UINT)dw;
}
/*
* OleStdGetMiscStatusOfClass(REFCLSID, HKEY)
*
* Purpose:
* Returns the value of the misc status for the given clsid.
*
* Parameters:
* rclsid pointer to the clsid to retrieve user type of.
* hKey hKey for reg db - if this is NULL, then we
* open and close the reg db within this function. If it
* is non-NULL, then we assume it's a valid key to the
* \\CLSID root and use it without closing it. (useful
* if you're doing lots of reg db stuff).
*
* Return Value:
* BOOL TRUE on success, FALSE on failure.
*
*/
STDAPI_(BOOL) OleStdGetMiscStatusOfClass(REFCLSID rclsid, HKEY hKey, DWORD FAR * lpdwValue)
{
DWORD dw;
LONG lRet;
LPTSTR lpszCLSID;
TCHAR szKey[64];
TCHAR szMiscStatus[OLEUI_CCHKEYMAX];
BOOL bCloseRegDB = FALSE;
if (hKey == NULL)
{
//Open up the root key.
lRet=RegOpenKey(HKEY_CLASSES_ROOT, TEXT("CLSID"), &hKey);
if ((LONG)ERROR_SUCCESS!=lRet)
return FALSE;
bCloseRegDB = TRUE;
}
// Get a string containing the class name
StringFromCLSIDA(rclsid, &lpszCLSID);
// Construct key
lstrcpy(szKey, lpszCLSID);
lstrcat(szKey, TEXT("\\MiscStatus"));
dw=OLEUI_CCHKEYMAX_SIZE;
lRet = RegQueryValue(hKey, szKey, (LPTSTR)szMiscStatus, &dw);
if ((LONG)ERROR_SUCCESS!=lRet)
{
OleStdFreeString(lpszCLSID, NULL);
if (bCloseRegDB)
RegCloseKey(hKey);
return FALSE;
}
*lpdwValue = Atol((LPTSTR)szMiscStatus);
OleStdFreeString(lpszCLSID, NULL);
if (bCloseRegDB)
RegCloseKey(hKey);
return TRUE;
}
/*
* CLIPFORMAT OleStdGetDefaultFileFormatOfClass(REFCLSID, HKEY)
*
* Purpose:
* Returns the default file format of the specified class.
* this is entered in REGDB as follows:
* CLSID\{...}\DataFormats\DefaultFile = <cfFmt>
*
* Parameters:
* rclsid pointer to the clsid to retrieve user type of.
* hKey hKey for reg db- if this is NULL, then we
* open and close the reg db within this function. If it
* is non-NULL, then we assume it's a valid key to the
* \ root and use it without closing it. (useful
* if you're doing lots of reg db stuff).
*
* Return Value:
* cfFmt -- DefaultFile format
* NULL -- failed to get default file format
*
*/
STDAPI_(CLIPFORMAT) OleStdGetDefaultFileFormatOfClass(
REFCLSID rclsid,
HKEY hKey
)
{
CLIPFORMAT cfFmt = 0;
DWORD dw;
LONG lRet;
LPTSTR lpszCLSID;
BOOL bCloseRegDB = FALSE;
TCHAR szKey[128];
TCHAR szDefaultFile[OLEUI_CCHKEYMAX];
BOOL bStatus = TRUE;
if (hKey == NULL)
{
//Open up the root key.
lRet=RegOpenKey(HKEY_CLASSES_ROOT, NULL, &hKey);
if ((LONG)ERROR_SUCCESS!=lRet)
return 0;
bCloseRegDB = TRUE;
}
// Get a string containing the class name
StringFromCLSIDA(rclsid, &lpszCLSID);
// Construct key
wsprintf(szKey, TEXT("CLSID\\%s\\DataFormats\\DefaultFile"), lpszCLSID);
OleStdFreeString(lpszCLSID, NULL);
dw=OLEUI_CCHKEYMAX_SIZE;
lRet = RegQueryValue(hKey, szKey, (LPTSTR)szDefaultFile, (LONG FAR *)&dw);
if ((LONG)ERROR_SUCCESS!=lRet)
bStatus = FALSE;
else {
/* if the format is a number, then it should refer to one of the
** standard Windows formats.
*/
if (isdigit(szDefaultFile[0]))
cfFmt = (CLIPFORMAT)Atol(szDefaultFile);
else
cfFmt = RegisterClipboardFormat(szDefaultFile);
}
if (bCloseRegDB)
RegCloseKey(hKey);
return cfFmt;
}

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