| 1 | /* $Id: RTNtPathExpand8dot3PathA.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Native NT, RTNtPathExpand8dot3PathA.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox base platform packages, as
|
|---|
| 10 | * available from https://www.virtualbox.org.
|
|---|
| 11 | *
|
|---|
| 12 | * This program is free software; you can redistribute it and/or
|
|---|
| 13 | * modify it under the terms of the GNU General Public License
|
|---|
| 14 | * as published by the Free Software Foundation, in version 3 of the
|
|---|
| 15 | * License.
|
|---|
| 16 | *
|
|---|
| 17 | * This program is distributed in the hope that it will be useful, but
|
|---|
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 20 | * General Public License for more details.
|
|---|
| 21 | *
|
|---|
| 22 | * You should have received a copy of the GNU General Public License
|
|---|
| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
|---|
| 24 | *
|
|---|
| 25 | * The contents of this file may alternatively be used under the terms
|
|---|
| 26 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
|
|---|
| 28 | * in the VirtualBox distribution, in which case the provisions of the
|
|---|
| 29 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 30 | *
|
|---|
| 31 | * You may elect to license modified versions of this file under the
|
|---|
| 32 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 33 | *
|
|---|
| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
|
|---|
| 35 | */
|
|---|
| 36 |
|
|---|
| 37 |
|
|---|
| 38 | /*********************************************************************************************************************************
|
|---|
| 39 | * Header Files *
|
|---|
| 40 | *********************************************************************************************************************************/
|
|---|
| 41 | #define LOG_GROUP RTLOGGROUP_FS
|
|---|
| 42 | #ifdef IN_SUP_HARDENED_R3
|
|---|
| 43 | # include <iprt/nt/nt-and-windows.h>
|
|---|
| 44 | #else
|
|---|
| 45 | # include <iprt/nt/nt.h>
|
|---|
| 46 | #endif
|
|---|
| 47 |
|
|---|
| 48 | #include <iprt/err.h>
|
|---|
| 49 | #include <iprt/string.h>
|
|---|
| 50 | #include <iprt/path.h>
|
|---|
| 51 | #include <iprt/utf16.h>
|
|---|
| 52 |
|
|---|
| 53 |
|
|---|
| 54 |
|
|---|
| 55 | /**
|
|---|
| 56 | * Wrapper around RTNtPathExpand8dot3Path that allocates a buffer instead of
|
|---|
| 57 | * working on the input buffer.
|
|---|
| 58 | *
|
|---|
| 59 | * @returns IPRT status code, see RTNtPathExpand8dot3Path().
|
|---|
| 60 | * @param pUniStrSrc The path to fix up. MaximumLength is the max buffer
|
|---|
| 61 | * length.
|
|---|
| 62 | * @param fPathOnly Whether to only process the path and leave the filename
|
|---|
| 63 | * as passed in.
|
|---|
| 64 | * @param pUniStrDst Output string. On success, the caller must use
|
|---|
| 65 | * RTUtf16Free to free what the Buffer member points to.
|
|---|
| 66 | * This is all zeros and NULL on failure.
|
|---|
| 67 | */
|
|---|
| 68 | RTDECL(int) RTNtPathExpand8dot3PathA(PCUNICODE_STRING pUniStrSrc, bool fPathOnly, PUNICODE_STRING pUniStrDst)
|
|---|
| 69 | {
|
|---|
| 70 | /* Guess a reasonable size for the final version. */
|
|---|
| 71 | size_t const cbShort = pUniStrSrc->Length;
|
|---|
| 72 | size_t cbLong = RT_MIN(_64K - 1, cbShort * 8);
|
|---|
| 73 | if (cbLong < RTPATH_MAX)
|
|---|
| 74 | cbLong = RTPATH_MAX * 2;
|
|---|
| 75 | AssertCompile(RTPATH_MAX * 2 < _64K);
|
|---|
| 76 |
|
|---|
| 77 | pUniStrDst->Buffer = (WCHAR *)RTUtf16Alloc(cbLong);
|
|---|
| 78 | if (pUniStrDst->Buffer != NULL)
|
|---|
| 79 | {
|
|---|
| 80 | /* Copy over the short name and fix it up. */
|
|---|
| 81 | pUniStrDst->MaximumLength = (uint16_t)cbLong;
|
|---|
| 82 | pUniStrDst->Length = (uint16_t)cbShort;
|
|---|
| 83 | memcpy(pUniStrDst->Buffer, pUniStrSrc->Buffer, cbShort);
|
|---|
| 84 | pUniStrDst->Buffer[cbShort / sizeof(WCHAR)] = '\0';
|
|---|
| 85 | int rc = RTNtPathExpand8dot3Path(pUniStrDst, fPathOnly);
|
|---|
| 86 | if (RT_SUCCESS(rc))
|
|---|
| 87 | return rc;
|
|---|
| 88 |
|
|---|
| 89 | /* We failed, bail. */
|
|---|
| 90 | RTUtf16Free(pUniStrDst->Buffer);
|
|---|
| 91 | pUniStrDst->Buffer = NULL;
|
|---|
| 92 | }
|
|---|
| 93 | pUniStrDst->Length = 0;
|
|---|
| 94 | pUniStrDst->MaximumLength = 0;
|
|---|
| 95 | return VERR_NO_UTF16_MEMORY;
|
|---|
| 96 | }
|
|---|
| 97 |
|
|---|
