diff options
Diffstat (limited to 'src/VBox/Runtime/nt/RTNtPathExpand8dot3PathA.cpp')
| -rw-r--r-- | src/VBox/Runtime/nt/RTNtPathExpand8dot3PathA.cpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/src/VBox/Runtime/nt/RTNtPathExpand8dot3PathA.cpp b/src/VBox/Runtime/nt/RTNtPathExpand8dot3PathA.cpp new file mode 100644 index 00000000..5d83f729 --- /dev/null +++ b/src/VBox/Runtime/nt/RTNtPathExpand8dot3PathA.cpp @@ -0,0 +1,97 @@ +/* $Id: RTNtPathExpand8dot3PathA.cpp $ */ +/** @file + * IPRT - Native NT, RTNtPathExpand8dot3PathA. + */ + +/* + * Copyright (C) 2006-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP RTLOGGROUP_FS +#ifdef IN_SUP_HARDENED_R3 +# include <iprt/nt/nt-and-windows.h> +#else +# include <iprt/nt/nt.h> +#endif + +#include <iprt/err.h> +#include <iprt/string.h> +#include <iprt/path.h> +#include <iprt/utf16.h> + + + +/** + * Wrapper around RTNtPathExpand8dot3Path that allocates a buffer instead of + * working on the input buffer. + * + * @returns IPRT status code, see RTNtPathExpand8dot3Path(). + * @param pUniStrSrc The path to fix up. MaximumLength is the max buffer + * length. + * @param fPathOnly Whether to only process the path and leave the filename + * as passed in. + * @param pUniStrDst Output string. On success, the caller must use + * RTUtf16Free to free what the Buffer member points to. + * This is all zeros and NULL on failure. + */ +RTDECL(int) RTNtPathExpand8dot3PathA(PCUNICODE_STRING pUniStrSrc, bool fPathOnly, PUNICODE_STRING pUniStrDst) +{ + /* Guess a reasonable size for the final version. */ + size_t const cbShort = pUniStrSrc->Length; + size_t cbLong = RT_MIN(_64K - 1, cbShort * 8); + if (cbLong < RTPATH_MAX) + cbLong = RTPATH_MAX * 2; + AssertCompile(RTPATH_MAX * 2 < _64K); + + pUniStrDst->Buffer = (WCHAR *)RTUtf16Alloc(cbLong); + if (pUniStrDst->Buffer != NULL) + { + /* Copy over the short name and fix it up. */ + pUniStrDst->MaximumLength = (uint16_t)cbLong; + pUniStrDst->Length = (uint16_t)cbShort; + memcpy(pUniStrDst->Buffer, pUniStrSrc->Buffer, cbShort); + pUniStrDst->Buffer[cbShort / sizeof(WCHAR)] = '\0'; + int rc = RTNtPathExpand8dot3Path(pUniStrDst, fPathOnly); + if (RT_SUCCESS(rc)) + return rc; + + /* We failed, bail. */ + RTUtf16Free(pUniStrDst->Buffer); + pUniStrDst->Buffer = NULL; + } + pUniStrDst->Length = 0; + pUniStrDst->MaximumLength = 0; + return VERR_NO_UTF16_MEMORY; +} + |