/* * SPDX-License-Identifier: ISC * * Copyright (c) 1996, 1998-2005, 2010-2012, 2014-2016 * Todd C. Miller <Todd.Miller@sudo.ws> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * Sponsored in part by the Defense Advanced Research Projects * Agency (DARPA) and Air Force Research Laboratory, Air Force * Materiel Command, USAF, under agreement number F39502-99-1-0512. */ /* * This is an open source non-commercial project. Dear PVS-Studio, please check it. * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com */ #include <config.h> #include <sys/types.h> #include <sys/stat.h> #include <stdio.h> #ifdef HAVE_STRING_H # include <string.h> #endif /* HAVE_STRING_H */ #ifdef HAVE_STRINGS_H # include <strings.h> #endif /* HAVE_STRINGS_H */ #include <unistd.h> #include <errno.h> #include "sudoers.h" /* * Verify that path is a normal file and executable by root. */ bool sudo_goodpath(const char *path, struct stat *sbp) { bool ret = false; debug_decl(sudo_goodpath, SUDOERS_DEBUG_UTIL) if (path != NULL) { struct stat sb; if (sbp == NULL) sbp = &sb; if (stat(path, sbp) == 0) { /* Make sure path describes an executable regular file. */ if (S_ISREG(sbp->st_mode) && ISSET(sbp->st_mode, S_IXUSR|S_IXGRP|S_IXOTH)) ret = true; else errno = EACCES; } } debug_return_bool(ret); }