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comdlg32: Fixed a number of buffer overflows in the file dialog.

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This commit is contained in:
Alexandre Julliard 2008-03-25 17:34:32 +01:00
parent 31666b311d
commit 1e9acad3a0
1 changed files with 11 additions and 14 deletions
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25
dlls/comdlg32/filedlg.c
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@ -889,7 +889,7 @@ static INT_PTR FILEDLG95_Handle_GetFilePath(HWND hwnd, DWORD size, LPVOID buffer
{
/* 'n' includes trailing \0 */
bufW[n-1] = '\\';
memcpy( &bufW[n], lpstrFileList, (size-n)*sizeof(WCHAR) );
lstrcpynW( &bufW[n], lpstrFileList, size - n );
}
TRACE("returned -> %s\n",debugstr_wn(bufW, total));
}
@ -931,16 +931,15 @@ static INT_PTR FILEDLG95_Handle_GetFileSpec(HWND hwnd, DWORD size, LPVOID buffer
FILEDLG95_FILENAME_GetFileNames(hwnd, &lpstrFileList, &sizeUsed, ' ');
if( fodInfos->unicode )
{
LPWSTR bufW = buffer;
memcpy( bufW, lpstrFileList, sizeof(WCHAR)*sizeUsed );
lstrcpynW( buffer, lpstrFileList, size );
}
else
{
LPSTR bufA = buffer;
sizeUsed = WideCharToMultiByte( CP_ACP, 0, lpstrFileList, sizeUsed,
NULL, 0, NULL, NULL);
WideCharToMultiByte(CP_ACP, 0, lpstrFileList, sizeUsed,
bufA, size, NULL, NULL);
DWORD sizeA = WideCharToMultiByte( CP_ACP, 0, lpstrFileList, sizeUsed, NULL, 0, NULL, NULL);
WideCharToMultiByte(CP_ACP, 0, lpstrFileList, sizeUsed, bufA, size, NULL, NULL);
if (size && size < sizeA) bufA[size - 1] = 0;
sizeUsed = sizeA;
}
MemFree(lpstrFileList);
@ -3237,29 +3236,27 @@ static int FILEDLG95_FILENAME_GetFileNames (HWND hwnd, LPWSTR * lpstrFileList, U
while ((lpstrEdit[nStrCharCount]!='"') && (nStrCharCount <= nStrLen))
{
(*lpstrFileList)[nFileIndex++] = lpstrEdit[nStrCharCount];
(*sizeUsed)++;
nStrCharCount++;
}
(*lpstrFileList)[nFileIndex++] = separator;
(*sizeUsed)++;
nFileCount++;
}
nStrCharCount++;
}
/* single, unquoted string */
if ((nStrLen > 0) && (*sizeUsed == 0) )
if ((nStrLen > 0) && (nFileIndex == 0) )
{
lstrcpyW(*lpstrFileList, lpstrEdit);
nFileIndex = lstrlenW(lpstrEdit) + 1;
(*sizeUsed) = nFileIndex;
nFileCount = 1;
}
/* trailing \0 */
(*lpstrFileList)[nFileIndex] = '\0';
(*sizeUsed)++;
/* trailing \0 */
if (nFileIndex && separator) nFileIndex--; /* remove trailing separator */
(*lpstrFileList)[nFileIndex++] = '\0';
*sizeUsed = nFileIndex;
MemFree(lpstrEdit);
return nFileCount;
}