Leaked source code of windows server 2003
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/****************************** Module Header ******************************\
* Module Name: utils.c
*
* Purpose: Conatains all the utility routines
*
* Created: 1990
*
* Copyright (c) 1990, 1991 Microsoft Corporation
*
* History:
* Raor, srinik (../../1990,91) Designed and coded
* curts created portable version for WIN16/32
*
\***************************************************************************/
#include <windows.h>
#include <reghelp.hxx>
#include "dll.h"
#include "strsafe.h"
#define KB_64 65536
#define NULL_WORD 0x0000
extern ATOM aPackage;
extern OLEOBJECTVTBL vtblMF, vtblBM, vtblDIB, vtblGEN;
// QuerySize API support
DWORD dwObjSize = 0;
OLESTREAMVTBL dllStreamVtbl;
OLESTREAM dllStream;
BOOL PutStrWithLen(
LPOLESTREAM lpstream,
LPSTR lpbytes
){
LONG len;
len = (LONG) lstrlen(lpbytes) + 1;
if (PutBytes (lpstream, (LPSTR)&len, sizeof(len)))
return TRUE;
return PutBytes(lpstream, lpbytes, len);
}
BOOL GetStrWithLen(
LPOLESTREAM lpstream,
LPSTR lpbytes
){
if (GetBytes (lpstream, lpbytes, sizeof(LONG)))
return TRUE;
return GetBytes (lpstream, lpbytes + sizeof(LONG), (*(LONG FAR *)lpbytes));
}
ATOM GetAtomFromStream(
LPOLESTREAM lpstream
){
BOOL err = TRUE;
LONG len;
char str[MAX_STR+1];
if (GetBytes (lpstream, (LPSTR)&len, sizeof(len)))
return (ATOM)0;
if (len == 0)
return (ATOM)0;
if (GetBytes(lpstream, (LPSTR)str, len))
return (ATOM)0;
return GlobalAddAtom(str);
}
BOOL PutAtomIntoStream(
LPOLESTREAM lpstream,
ATOM at
){
LONG len = 0;
char buf[MAX_STR + 1];
if (at == 0)
return (PutBytes (lpstream, (LPSTR)&len, sizeof(len)));
len = GlobalGetAtomName (at,(LPSTR)buf, MAX_STR) + 1;
if (PutBytes (lpstream, (LPSTR)&len, sizeof(len)))
return TRUE;
return PutBytes(lpstream, buf, len);
}
// DuplicateAtom: Bump the use count up on a global atom.
ATOM FARINTERNAL DuplicateAtom (
ATOM atom
){
char buffer[MAX_ATOM+1];
Puts("DuplicateAtom");
if (!atom)
return (ATOM)0;
GlobalGetAtomName (atom, buffer, MAX_ATOM);
return GlobalAddAtom (buffer);
}
BOOL GetBytes(
LPOLESTREAM lpstream,
LPSTR lpstr,
LONG len
){
ASSERT (lpstream->lpstbl->Get , "stream get function is null");
return (((*lpstream->lpstbl->Get)(lpstream, lpstr, (DWORD)len)) != (DWORD)len);
}
BOOL PutBytes(
LPOLESTREAM lpstream,
LPSTR lpstr,
LONG len
){
ASSERT (lpstream->lpstbl->Put , "stream get function is null");
return (((*lpstream->lpstbl->Put)(lpstream, lpstr, (DWORD)len)) != (DWORD)len);
}
BOOL FARINTERNAL UtilMemCmp (
LPSTR lpmem1,
LPSTR lpmem2,
DWORD dwCount
){
UINT HUGE_T * hpmem1;
UINT HUGE_T * hpmem2;
DWORD words;
DWORD bytes;
bytes = dwCount % MAPVALUE(2,4);
words = dwCount >> MAPVALUE(1,2);//* we compare DWORDS
//* in the 32 bit version
{
hpmem1 = (UINT HUGE_T *) lpmem1;
hpmem2 = (UINT HUGE_T *) lpmem2;
while (words--) {
if (*hpmem1++ != *hpmem2++)
return FALSE;
}
lpmem1 = (LPSTR)hpmem1;
lpmem2 = (LPSTR)hpmem2;
for (; bytes-- ; ) {
if ( *lpmem1++ != *lpmem2++ )
return FALSE;
}
}
return TRUE;
}
void FARINTERNAL UtilMemCpy (
LPSTR lpdst,
LPSTR lpsrc,
DWORD dwCount
){
UINT HUGE_T * hpdst;
UINT HUGE_T * hpsrc;
DWORD words;
DWORD bytes;
bytes = dwCount % MAPVALUE(2,4);
words = dwCount >> MAPVALUE(1,2);//* we compare DWORDS
//* in the 32 bit version
{
hpdst = (UINT HUGE_T *) lpdst;
hpsrc = (UINT HUGE_T *) lpsrc;
for(;words--; )
*hpdst++ = *hpsrc++;
lpdst = (LPSTR)hpdst;
lpsrc = (LPSTR)hpsrc;
for (;bytes--;)
*lpdst++ = *lpsrc++;
}
}
//DuplicateData: Duplicates a given Global data handle.
HANDLE FARINTERNAL DuplicateGlobal (
HANDLE hdata,
UINT flags
){
LPSTR lpdst = NULL;
LPSTR lpsrc = NULL;
HANDLE hdup = NULL;
DWORD size;
BOOL err = TRUE;
if (!hdata)
return NULL;
if(!(lpsrc = GlobalLock (hdata)))
return NULL;
hdup = GlobalAlloc (flags, (size = (DWORD)GlobalSize(hdata)));
if(!(lpdst = GlobalLock (hdup)))
goto errRtn;;
err = FALSE;
UtilMemCpy (lpdst, lpsrc, size);
errRtn:
if(lpsrc)
GlobalUnlock (hdata);
if(lpdst)
GlobalUnlock (hdup);
if (err && hdup) {
GlobalFree (hdup);
hdup = NULL;
}
return hdup;
}
BOOL FARINTERNAL CmpGlobals (
HANDLE hdata1,
HANDLE hdata2
){
LPSTR lpdata1 = NULL;
LPSTR lpdata2 = NULL;
DWORD size1;
DWORD size2;
BOOL retval = FALSE;
size1 = (DWORD)GlobalSize (hdata1);
size2 = (DWORD)GlobalSize (hdata2);
if (size1 != size2)
return FALSE;
if (!(lpdata1 = GlobalLock (hdata1)))
goto errRtn;
if (!(lpdata2 = GlobalLock (hdata2)))
goto errRtn;
retval = UtilMemCmp (lpdata1, lpdata2, size1);
errRtn:
if (lpdata1)
GlobalUnlock (hdata1);
if (lpdata2)
GlobalUnlock (hdata2);
return retval;
}
int FARINTERNAL GlobalGetAtomLen (
ATOM aItem
){
// !!! Change this
char buf[MAX_STR];
if (!aItem)
return 0;
return (GlobalGetAtomName (aItem, (LPSTR)buf, MAX_STR));
}
BOOL FARINTERNAL MapExtToClass (
LPSTR lptemplate,
LPSTR lpbuf,
int len
){
LONG cb;
LPSTR lpstrBack = NULL;
while (*lptemplate)
{
if ((*lptemplate) == '\\'){
lpstrBack = lptemplate ;
}
lptemplate ++ ;
}
while (lpstrBack && *lpstrBack && *lpstrBack != '.')
lpstrBack++ ;
cb = len;
if (lpstrBack == NULL || *(lpstrBack+1) == '\0')
return FALSE;
if (QueryClassesRootValueA (lpstrBack, lpbuf, &cb))
return FALSE;
return TRUE;
}
// Get exe name from aClass and set it as aServer
void INTERNAL SetExeAtom (
LPOBJECT_LE lpobj
){
char key[MAX_STR];
// if old link object assume the class same as the exe file name.
if (lpobj->bOldLink)
lpobj->aServer = DuplicateAtom (lpobj->app);
else {
if (GlobalGetAtomName (lpobj->app, key, sizeof(key)))
lpobj->aServer = GetAppAtom ((LPSTR)key);
}
}
ATOM FARINTERNAL GetAppAtom (
LPCSTR lpclass
){
char buf1[MAX_STR];
if (!QueryApp (lpclass, PROTOCOL_EDIT, buf1)) {
return (ATOM)0;
}
return GlobalAddAtom ((LPSTR)buf1);
}
BOOL FARINTERNAL QueryVerb (
LPOBJECT_LE lpobj,
UINT verb,
LPSTR lpbuf,
LONG cbmax
){
LONG cb = MAX_STR;
char key[MAX_STR];
// do not need 256 bytes buffer
char class[MAX_STR];
int len;
if (!GlobalGetAtomName (lpobj->app, (LPSTR)class, sizeof(class)))
return FALSE;
StringCchCopy(key, sizeof(key)/sizeof(key[0]), (LPSTR)class);
StringCchCat (key, sizeof(key)/sizeof(key[0]), "\\protocol\\StdFileEditing\\verb\\");
len = lstrlen (key);
// If we don't have room to add the char fail
if (len >= sizeof(key)/sizeof(key[0]) - 1)
return FALSE;
key [len++] = (char) ('0' + verb);
key [len++] = 0;
if (QueryClassesRootValueA (key, lpbuf, &cbmax))
return FALSE;
return TRUE;
}
BOOL QueryApp (
LPCSTR lpclass,
LPCSTR lpprotocol,
LPSTR lpbuf
){
LONG cb = MAX_STR;
char key[MAX_STR];
if (FAILED(StringCchCopy (key, sizeof(key)/sizeof(key[0]), lpclass)))
return FALSE;
if (FAILED(StringCchCat(key, sizeof(key)/sizeof(key[0]), "\\protocol\\")))
return FALSE;
if (FAILED(StringCchCat(key, sizeof(key)/sizeof(key[0]), lpprotocol)))
return FALSE;
if (FAILED(StringCchCat(key, sizeof(key)/sizeof(key[0]), "\\server")))
return FALSE;
if (QueryClassesRootValueA (key, lpbuf, &cb))
return FALSE;
return TRUE;
}
HANDLE MapStrToH (
LPSTR lpstr
){
HANDLE hdata = NULL;
LPSTR lpdata = NULL;
UINT cch = lstrlen(lpstr) + 1;
hdata = GlobalAlloc (GMEM_DDESHARE, cch);
if (hdata == NULL || (lpdata = (LPSTR)GlobalLock (hdata)) == NULL)
goto errRtn;
StringCchCopy(lpdata, cch, lpstr);
GlobalUnlock (hdata);
return hdata;
errRtn:
if (lpdata)
GlobalUnlock (hdata);
if (hdata)
GlobalFree (hdata);
return NULL;
}
HANDLE FARINTERNAL CopyData (
LPSTR lpsrc,
DWORD dwBytes
){
HANDLE hnew;
LPSTR lpnew;
BOOL retval = FALSE;
if (hnew = GlobalAlloc (GMEM_MOVEABLE, dwBytes)){
if (lpnew = GlobalLock (hnew)){
UtilMemCpy (lpnew, lpsrc, dwBytes);
GlobalUnlock (hnew);
return hnew;
}
else
GlobalFree (hnew);
}
return NULL;
}
void UtilMemClr (
PSTR pstr,
UINT size
){
while (size--)
*pstr++ = 0;
}
OLESTATUS FAR PASCAL ObjQueryName (
LPOLEOBJECT lpobj,
LPSTR lpBuf,
UINT FAR * lpcbBuf
){
if (lpobj->ctype != CT_LINK && lpobj->ctype != CT_EMBEDDED
&& lpobj->ctype != CT_STATIC)
return OLE_ERROR_OBJECT;
PROBE_WRITE(lpBuf);
if (!*lpcbBuf)
return OLE_ERROR_SIZE;
if (!CheckPointer(lpBuf+*lpcbBuf-1, WRITE_ACCESS))
return OLE_ERROR_SIZE;
ASSERT(lpobj->aObjName, "object name ATOM is NULL\n");
*lpcbBuf = GlobalGetAtomName (lpobj->aObjName, lpBuf, *lpcbBuf);
return OLE_OK;
}
OLESTATUS FAR PASCAL ObjRename (
LPOLEOBJECT lpobj,
LPCSTR lpNewName
){
if (lpobj->ctype != CT_LINK && lpobj->ctype != CT_EMBEDDED
&& lpobj->ctype != CT_STATIC)
return OLE_ERROR_OBJECT;
PROBE_READ(lpNewName);
if (!lpNewName[0])
return OLE_ERROR_NAME;
if (lpobj->aObjName)
GlobalDeleteAtom (lpobj->aObjName);
lpobj->aObjName = GlobalAddAtom (lpNewName);
return OLE_OK;
}
BOOL QueryHandler(
UINT cfFormat
){
HANDLE hInfo = NULL;
LPSTR lpInfo = NULL;
BOOL fRet = FALSE, fOpen = FALSE;
LONG cb = MAX_STR;
char str[MAX_STR];
HKEY hKey;
// we don't have the client app window handle, use the screen handle
fOpen = OpenClipboard (NULL);
if (!(hInfo = GetClipboardData (cfFormat)))
goto errRtn;
if (!(lpInfo = GlobalLock(hInfo)))
goto errRtn;
// First string of lpInfo is CLASS. See whether any handler is installed
// for this class.
if (FAILED(StringCchCopy (str, sizeof(str)/sizeof(str[0]), lpInfo)))
goto errRtn;
if (FAILED(StringCchCat (str, sizeof(str)/sizeof(str[0]), "\\protocol\\StdFileEditing\\handler")))
goto errRtn;
if (OpenClassesRootKeyA (str, &hKey))
goto errRtn;
RegCloseKey (hKey);
fRet = TRUE;
errRtn:
if (lpInfo)
GlobalUnlock (hInfo);
if (fOpen)
CloseClipboard();
return fRet;
}
OLESTATUS INTERNAL FileExists (
LPOBJECT_LE lpobj
){
char filename[MAX_STR];
OFSTRUCT ofstruct;
if (!GlobalGetAtomName (lpobj->topic, filename, MAX_STR))
return OLE_ERROR_MEMORY;
// For package with link we append "/LINK" to the filename. We don't want
// to check for it's existence here.
if (lpobj->app != aPackage) {
// when OF_EXIST is specified, file is opened and closed immediately
if (OpenFile (filename, &ofstruct, OF_EXIST) == -1)
return OLE_ERROR_OPEN;
}
return OLE_OK;
}
BOOL FARINTERNAL UtilQueryProtocol (
LPOBJECT_LE lpobj,
LPCSTR lpprotocol
){
char buf[MAX_STR];
ATOM aExe;
if (!GlobalGetAtomName (lpobj->app, (LPSTR) buf, MAX_STR))
return FALSE;
if (!QueryApp (buf, lpprotocol, (LPSTR) buf))
return FALSE;
aExe = GlobalAddAtom (buf);
if (aExe)
GlobalDeleteAtom (aExe);
if (aExe != lpobj->aServer)
return FALSE;
return TRUE;
}
DWORD PASCAL FAR DllPut (
LPOLESTREAM lpstream,
OLE_CONST void FAR *lpstr,
DWORD dwSize
){
UNREFERENCED_PARAMETER(lpstream);
UNREFERENCED_PARAMETER(lpstr);
dwObjSize += dwSize;
return dwSize;
}
OLESTATUS FARINTERNAL ObjQueryType (
LPOLEOBJECT lpobj,
LPLONG lptype
){
Puts("ObjQueryType");
if (lpobj->ctype != CT_STATIC)
return OLE_ERROR_OBJECT;
*lptype = lpobj->ctype;
return OLE_OK;
}
OLESTATUS FARINTERNAL ObjQuerySize (
LPOLEOBJECT lpobj,
DWORD FAR * lpdwSize
){
Puts("ObjQuerySize");
*lpdwSize = dwObjSize = 0;
if ((*lpobj->lpvtbl->SaveToStream) (lpobj, &dllStream) == OLE_OK) {
*lpdwSize = dwObjSize;
return OLE_OK;
}
return OLE_ERROR_BLANK;
}
BOOL FARINTERNAL IsObjectBlank (
LPOBJECT_LE lpobj
){
LPOLEOBJECT lpPictObj;
BOOL retval=FALSE;
// Cleaner way is to provide a method like QueryBlank()
if (!lpobj->hnative)
return TRUE;
if (!(lpPictObj = lpobj->lpobjPict))
return FALSE;
if (lpPictObj->lpvtbl == (LPOLEOBJECTVTBL)&vtblMF)
retval = (((LPOBJECT_MF)lpPictObj)->hmfp != NULL);
else if (lpPictObj->lpvtbl == (LPOLEOBJECTVTBL)&vtblBM)
retval = (((LPOBJECT_BM)lpPictObj)->hBitmap != NULL);
if (lpPictObj->lpvtbl == (LPOLEOBJECTVTBL)&vtblDIB)
retval = (((LPOBJECT_DIB)lpPictObj)->hDIB != NULL);
if (lpPictObj->lpvtbl == (LPOLEOBJECTVTBL)&vtblGEN)
retval = (((LPOBJECT_GEN)lpPictObj)->hData != NULL);
return retval;
}
BOOL FAR PASCAL OleIsDcMeta (HDC hdc)
{
return (GetDeviceCaps (hdc, TECHNOLOGY) == DT_METAFILE);
}
void ConvertBM32to16(
LPBITMAP lpsrc,
LPWIN16BITMAP lpdest
){
#ifdef WIN32
lpdest->bmType = (short)lpsrc->bmType;
lpdest->bmWidth = (short)lpsrc->bmWidth;
lpdest->bmHeight = (short)lpsrc->bmHeight;
lpdest->bmWidthBytes = (short)lpsrc->bmWidthBytes;
lpdest->bmPlanes = (BYTE)lpsrc->bmPlanes;
lpdest->bmBitsPixel = (BYTE)lpsrc->bmBitsPixel;
#endif
#ifdef WIN16
*lpdest = *lpsrc;
#endif
}
void ConvertBM16to32(
LPWIN16BITMAP lpsrc,
LPBITMAP lpdest
){
#ifdef WIN32
lpdest->bmType = MAKELONG(lpsrc->bmType,NULL_WORD);
lpdest->bmWidth = MAKELONG(lpsrc->bmWidth,NULL_WORD);
lpdest->bmHeight = MAKELONG(lpsrc->bmHeight,NULL_WORD);
lpdest->bmWidthBytes = MAKELONG(lpsrc->bmWidthBytes,NULL_WORD);
lpdest->bmPlanes = (WORD)lpsrc->bmPlanes;
lpdest->bmBitsPixel = (WORD)lpsrc->bmBitsPixel;
#endif
#ifdef WIN16
*lpdest = *lpsrc;
#endif
}
void ConvertMF16to32(
LPWIN16METAFILEPICT lpsrc,
LPMETAFILEPICT lpdest
){
#ifdef WIN32
lpdest->mm = (DWORD)lpsrc->mm;
lpdest->xExt = (DWORD)MAKELONG(lpsrc->xExt,NULL_WORD);
lpdest->yExt = (DWORD)MAKELONG(lpsrc->yExt,NULL_WORD);
#endif
#ifdef WIN16
*lpdest = *lpsrc;
#endif
}
void ConvertMF32to16(
LPMETAFILEPICT lpsrc,
LPWIN16METAFILEPICT lpdest
){
#ifdef WIN32
lpdest->mm = (short)lpsrc->mm;
lpdest->xExt = (short)lpsrc->xExt;
lpdest->yExt = (short)lpsrc->yExt;
#endif
#ifdef WIN16
*lpdest = *lpsrc;
#endif
}
DWORD INTERNAL GetFileVersion(LPOLEOBJECT lpoleobj)
{
if (lpoleobj->lhclientdoc)
return ((LPCLIENTDOC)(lpoleobj->lhclientdoc))->dwFileVer;
if (lpoleobj->lpParent)
return GetFileVersion(lpoleobj->lpParent);
return (DWORD)MAKELONG(wReleaseVer,OS_WIN32);
}