VirtualBox

source: vbox/trunk/src/VBox/Runtime/nt/RTNtPathFindPossible8dot3Name.cpp

Last change on this file was 106061, checked in by vboxsync, 3 months ago

Copyright year updates by scm.

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File size: 2.9 KB
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1/* $Id: RTNtPathFindPossible8dot3Name.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2/** @file
3 * IPRT - Native NT, RTNtPathFindPossible8dot3Name.
4 */
5
6/*
7 * Copyright (C) 2006-2024 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
49
50/**
51 * Checks whether the path could be containing alternative 8.3 names generated
52 * by NTFS, FAT, or other similar file systems.
53 *
54 * @returns Pointer to the first component that might be an 8.3 name, NULL if
55 * not 8.3 path.
56 * @param pwszPath The path to check.
57 *
58 * @remarks This is making bad ASSUMPTION wrt to the naming scheme of 8.3 names,
59 * however, non-tilde 8.3 aliases are probably rare enough to not be
60 * worth all the extra code necessary to open each path component and
61 * check if we've got the short name or not.
62 */
63RTDECL(PRTUTF16) RTNtPathFindPossible8dot3Name(PCRTUTF16 pwszPath)
64{
65 PCRTUTF16 pwszName = pwszPath;
66 for (;;)
67 {
68 RTUTF16 wc = *pwszPath++;
69 if (wc == '~')
70 {
71 /* Could check more here before jumping to conclusions... */
72 if (pwszPath - pwszName <= 8+1+3)
73 return (PRTUTF16)pwszName;
74 }
75 else if (wc == '\\' || wc == '/' || wc == ':')
76 pwszName = pwszPath;
77 else if (wc == 0)
78 break;
79 }
80 return NULL;
81}
82
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