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Diffstat (limited to '')
| -rw-r--r-- | src/VBox/Runtime/common/path/RTPathAbsEx.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/path/RTPathAbsEx.cpp b/src/VBox/Runtime/common/path/RTPathAbsEx.cpp new file mode 100644 index 00000000..8aac57e4 --- /dev/null +++ b/src/VBox/Runtime/common/path/RTPathAbsEx.cpp @@ -0,0 +1,104 @@ +/* $Id: RTPathAbsEx.cpp $ */ +/** @file + * IPRT - RTPathAbsEx + */ + +/* + * Copyright (C) 2006-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE 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. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "internal/iprt.h" +#include <iprt/path.h> +#include <iprt/err.h> +#include <iprt/param.h> +#include <iprt/string.h> +#include "internal/path.h" + + + +/** + * Get the absolute path (no symlinks, no . or .. components), assuming the + * given base path as the current directory. The resulting path doesn't have + * to exist. + * + * @returns iprt status code. + * @param pszBase The base path to act like a current directory. + * When NULL, the actual cwd is used (i.e. the call + * is equivalent to RTPathAbs(pszPath, ...). + * @param pszPath The path to resolve. + * @param pszAbsPath Where to store the absolute path. + * @param cchAbsPath Size of the buffer. + */ +RTDECL(int) RTPathAbsEx(const char *pszBase, const char *pszPath, char *pszAbsPath, size_t cchAbsPath) +{ + if ( pszBase + && pszPath + && !rtPathVolumeSpecLen(pszPath) + ) + { +#if defined(RT_OS_WINDOWS) + /* The format for very long paths is not supported. */ + if ( RTPATH_IS_SLASH(pszBase[0]) + && RTPATH_IS_SLASH(pszBase[1]) + && pszBase[2] == '?' + && RTPATH_IS_SLASH(pszBase[3]) + ) + return VERR_INVALID_NAME; +#endif + + /** @todo there are a couple of things which isn't 100% correct, although the + * current code will have to do for now, no time to fix. + * + * 1) On Windows & OS/2 we confuse '/' with an abspath spec and will + * not necessarily resolve it on the right drive. + * 2) A trailing slash in the base might cause UNC names to be created. + */ + size_t const cchPath = strlen(pszPath); + char szTmpPath[RTPATH_MAX]; + if (RTPATH_IS_SLASH(pszPath[0])) + { + /* join the disk name from base and the path (DOS systems only) */ + size_t const cchVolSpec = rtPathVolumeSpecLen(pszBase); + if (cchVolSpec + cchPath + 1 > sizeof(szTmpPath)) + return VERR_FILENAME_TOO_LONG; + memcpy(szTmpPath, pszBase, cchVolSpec); + memcpy(&szTmpPath[cchVolSpec], pszPath, cchPath + 1); + } + else + { + /* join the base path and the path */ + size_t const cchBase = strlen(pszBase); + if (cchBase + 1 + cchPath + 1 > sizeof(szTmpPath)) + return VERR_FILENAME_TOO_LONG; + memcpy(szTmpPath, pszBase, cchBase); + szTmpPath[cchBase] = RTPATH_DELIMITER; + memcpy(&szTmpPath[cchBase + 1], pszPath, cchPath + 1); + } + return RTPathAbs(szTmpPath, pszAbsPath, cchAbsPath); + } + + /* Fallback to the non *Ex version */ + return RTPathAbs(pszPath, pszAbsPath, cchAbsPath); +} + |