diff options
Diffstat (limited to 'src/VBox/Runtime/nt/RTNtPathFindPossible8dot3Name.cpp')
-rw-r--r-- | src/VBox/Runtime/nt/RTNtPathFindPossible8dot3Name.cpp | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/src/VBox/Runtime/nt/RTNtPathFindPossible8dot3Name.cpp b/src/VBox/Runtime/nt/RTNtPathFindPossible8dot3Name.cpp new file mode 100644 index 00000000..fb2842a1 --- /dev/null +++ b/src/VBox/Runtime/nt/RTNtPathFindPossible8dot3Name.cpp @@ -0,0 +1,82 @@ +/* $Id: RTNtPathFindPossible8dot3Name.cpp $ */ +/** @file + * IPRT - Native NT, RTNtPathFindPossible8dot3Name. + */ + +/* + * Copyright (C) 2006-2022 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 + + + +/** + * Checks whether the path could be containing alternative 8.3 names generated + * by NTFS, FAT, or other similar file systems. + * + * @returns Pointer to the first component that might be an 8.3 name, NULL if + * not 8.3 path. + * @param pwszPath The path to check. + * + * @remarks This is making bad ASSUMPTION wrt to the naming scheme of 8.3 names, + * however, non-tilde 8.3 aliases are probably rare enough to not be + * worth all the extra code necessary to open each path component and + * check if we've got the short name or not. + */ +RTDECL(PRTUTF16) RTNtPathFindPossible8dot3Name(PCRTUTF16 pwszPath) +{ + PCRTUTF16 pwszName = pwszPath; + for (;;) + { + RTUTF16 wc = *pwszPath++; + if (wc == '~') + { + /* Could check more here before jumping to conclusions... */ + if (pwszPath - pwszName <= 8+1+3) + return (PRTUTF16)pwszName; + } + else if (wc == '\\' || wc == '/' || wc == ':') + pwszName = pwszPath; + else if (wc == 0) + break; + } + return NULL; +} + |