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Fix a possible memory leak when extracting from an ICO file.

Browse source 
Fix some signed/unsigned warnings showing up in MSVC with default
warning level.
Fix possible problem with short PIMAGE_NT_HEADERS.
This commit is contained in:
Rolf Kalbermatter 2002-12-12 22:59:50 +00:00 committed by Alexandre Julliard
parent ea1ca9c705
commit 117d5326fd
1 changed files with 32 additions and 31 deletions
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63
dlls/user/exticon.c
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@ -254,7 +254,7 @@ static UINT ICO_ExtractIconExW(
UINT *pIconId,
UINT flags)
{
UINT ret = 0xFFFFFFFF;
UINT ret = 0;
UINT cx1, cx2, cy1, cy2;
LPBYTE pData;
DWORD sig;
@ -267,29 +267,26 @@ static UINT ICO_ExtractIconExW(
TRACE("%s, %d, %d %p 0x%08x\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons, pIconId, flags);
hFile = CreateFileW( lpszExeFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0 );
hFile = CreateFileW(lpszExeFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
if (hFile == INVALID_HANDLE_VALUE) return ret;
fsizel = GetFileSize(hFile,&fsizeh);
/* Map the file */
fmapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL );
CloseHandle( hFile );
fmapping = CreateFileMappingW(hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL);
CloseHandle(hFile);
if (!fmapping)
{
WARN("CreateFileMapping error %ld\n", GetLastError() );
return ret;
return 0xFFFFFFFF;
}
if ( !(peimage = MapViewOfFile(fmapping,FILE_MAP_READ,0,0,0)))
if (!(peimage = MapViewOfFile(fmapping, FILE_MAP_READ, 0, 0, 0)))
{
WARN("MapViewOfFile error %ld\n", GetLastError() );
CloseHandle( fmapping );
return ret;
CloseHandle(fmapping);
return 0xFFFFFFFF;
}
CloseHandle( fmapping );
/* Initialize return value to 0 to indicate extraction error */
ret = 0;
CloseHandle(fmapping);
cx1 = LOWORD(cxDesired);
cx2 = HIWORD(cxDesired) ? HIWORD(cxDesired) : cx1;
@ -302,10 +299,10 @@ static UINT ICO_ExtractIconExW(
if (!pIconId) /* if no icon identifier array present use the icon handle array as intermediate storage */
pIconId = (UINT*)RetPtr;
sig = USER32_GetResourceTable(peimage,fsizel,&pData);
sig = USER32_GetResourceTable(peimage, fsizel, &pData);
/* ico file */
if( sig==IMAGE_OS2_SIGNATURE || sig==1 ) /* .ICO file */
/* ico file or NE exe/dll*/
if (sig==IMAGE_OS2_SIGNATURE || sig==1) /* .ICO file */
{
BYTE *pCIDir = 0;
NE_TYPEINFO *pTInfo = (NE_TYPEINFO*)(pData + 2);
@ -315,25 +312,24 @@ static UINT ICO_ExtractIconExW(
TRACE("-- OS2/icon Signature (0x%08lx)\n", sig);
if( pData == (BYTE*)-1 )
if (pData == (BYTE*)-1)
{
/* FIXME: pCIDir is allocated on the heap - memory leak */
pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize); /* check for .ICO file */
if( pCIDir )
if (pCIDir)
{
iconDirCount = 1; iconCount = lpiID->idCount;
TRACE("-- icon found %p 0x%08lx 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
}
}
else while( pTInfo->type_id && !(pIconStorage && pIconDir) )
else while (pTInfo->type_id && !(pIconStorage && pIconDir))
{
if( pTInfo->type_id == NE_RSCTYPE_GROUP_ICON ) /* find icon directory and icon repository */
if (pTInfo->type_id == NE_RSCTYPE_GROUP_ICON) /* find icon directory and icon repository */
{
iconDirCount = pTInfo->count;
pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
TRACE("\tfound directory - %i icon families\n", iconDirCount);
}
if( pTInfo->type_id == NE_RSCTYPE_ICON )
if (pTInfo->type_id == NE_RSCTYPE_ICON)
{
iconCount = pTInfo->count;
pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
@ -342,37 +338,41 @@ static UINT ICO_ExtractIconExW(
pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
}
if( (pIconStorage && pIconDir) || lpiID ) /* load resources and create icons */
if ((pIconStorage && pIconDir) || lpiID) /* load resources and create icons */
{
if( nIcons == 0 )
if (nIcons == 0)
{
ret = iconDirCount;
if (lpiID && pCIDir) /* *.ico file, deallocate heap pointer*/
HeapFree(GetProcessHeap(), 0, pCIDir);
}
else if( nIconIndex < iconDirCount )
else if (nIconIndex < iconDirCount)
{
UINT16 i, icon;
if( nIcons > iconDirCount - nIconIndex )
if (nIcons > iconDirCount - nIconIndex)
nIcons = iconDirCount - nIconIndex;
for (i = 0; i < nIcons; i++)
{
/* .ICO files have only one icon directory */
if( lpiID == NULL ) /* *.ico */
pCIDir = USER32_LoadResource(peimage, pIconDir + i + nIconIndex , *(WORD*)pData, &uSize);
if (lpiID == NULL) /* not *.ico */
pCIDir = USER32_LoadResource(peimage, pIconDir + i + nIconIndex, *(WORD*)pData, &uSize);
pIconId[i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE, (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
}
if (lpiID && pCIDir) /* *.ico file, deallocate heap pointer*/
HeapFree(GetProcessHeap(), 0, pCIDir);
for (icon = 0; icon < nIcons; icon++)
{
pCIDir = NULL;
if( lpiID )
if (lpiID)
pCIDir = ICO_LoadIcon(peimage, lpiID->idEntries + (int)pIconId[icon], &uSize);
else
for (i = 0; i < iconCount; i++)
if (pIconStorage[i].id == ((int)pIconId[icon] | 0x8000) )
pCIDir = USER32_LoadResource(peimage, pIconStorage + i, *(WORD*)pData, &uSize);
if( pCIDir )
if (pCIDir)
RetPtr[icon] = (HICON)CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
(icon & 1) ? cx2 : cx1, (icon & 1) ? cy2 : cy1, flags);
else
@ -394,11 +394,12 @@ static UINT ICO_ExtractIconExW(
const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
int i,j;
UINT i, j;
dheader = (PIMAGE_DOS_HEADER)peimage;
pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew); /* it is a pe header, USER32_GetResourceTable checked that */
pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header)+sizeof(*pe_header)); /* probably makes problems with short PE headers...*/
pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header) + sizeof(DWORD) + sizeof(IMAGE_FILE_HEADER)
+ pe_header->FileHeader.SizeOfOptionalHeader);
rootresdir = NULL;
/* search for the root resource directory */