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kernel32: Avoid calling MultiByteToWideChar with invalid parameters.

This commit is contained in:
Alex Henrie 2012-05-16 19:24:07 -06:00 committed by Alexandre Julliard
parent eeee536ad6
commit 92b4979b33
1 changed files with 37 additions and 20 deletions
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57
dlls/kernel32/locale.c
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@ -2867,34 +2867,51 @@ INT WINAPI CompareStringA(LCID lcid, DWORD style,
if (!(style & LOCALE_USE_CP_ACP)) locale_cp = get_lcid_codepage( lcid );
len1W = MultiByteToWideChar(locale_cp, 0, str1, len1, buf1W, 130);
if (len1W)
str1W = buf1W;
else
if (len1)
{
len1W = MultiByteToWideChar(locale_cp, 0, str1, len1, NULL, 0);
str1W = HeapAlloc(GetProcessHeap(), 0, len1W * sizeof(WCHAR));
if (!str1W)
len1W = MultiByteToWideChar(locale_cp, 0, str1, len1, buf1W, 130);
if (len1W)
str1W = buf1W;
else
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return 0;
len1W = MultiByteToWideChar(locale_cp, 0, str1, len1, NULL, 0);
str1W = HeapAlloc(GetProcessHeap(), 0, len1W * sizeof(WCHAR));
if (!str1W)
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return 0;
}
MultiByteToWideChar(locale_cp, 0, str1, len1, str1W, len1W);
}
MultiByteToWideChar(locale_cp, 0, str1, len1, str1W, len1W);
}
len2W = MultiByteToWideChar(locale_cp, 0, str2, len2, buf2W, 130);
if (len2W)
str2W = buf2W;
else
{
len2W = MultiByteToWideChar(locale_cp, 0, str2, len2, NULL, 0);
str2W = HeapAlloc(GetProcessHeap(), 0, len2W * sizeof(WCHAR));
if (!str2W)
len1W = 0;
str1W = buf1W;
}
if (len2)
{
len2W = MultiByteToWideChar(locale_cp, 0, str2, len2, buf2W, 130);
if (len2W)
str2W = buf2W;
else
{
if (str1W != buf1W) HeapFree(GetProcessHeap(), 0, str1W);
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return 0;
len2W = MultiByteToWideChar(locale_cp, 0, str2, len2, NULL, 0);
str2W = HeapAlloc(GetProcessHeap(), 0, len2W * sizeof(WCHAR));
if (!str2W)
{
if (str1W != buf1W) HeapFree(GetProcessHeap(), 0, str1W);
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return 0;
}
MultiByteToWideChar(locale_cp, 0, str2, len2, str2W, len2W);
}
MultiByteToWideChar(locale_cp, 0, str2, len2, str2W, len2W);
}
else
{
len2W = 0;
str2W = buf2W;
}
ret = CompareStringW(lcid, style, str1W, len1W, str2W, len2W);