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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:37:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:37:38 +0000 |
commit | ae581a19fbe896a797450b9d9573fb66f2735227 (patch) | |
tree | 56c40be8518a29c9351364d13a9676aa83932dc0 /plugins/sudoers/goodpath.c | |
parent | Initial commit. (diff) | |
download | sudo-upstream.tar.xz sudo-upstream.zip |
Adding upstream version 1.9.13p3.upstream/1.9.13p3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plugins/sudoers/goodpath.c')
-rw-r--r-- | plugins/sudoers/goodpath.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/plugins/sudoers/goodpath.c b/plugins/sudoers/goodpath.c new file mode 100644 index 0000000..c4c8bbd --- /dev/null +++ b/plugins/sudoers/goodpath.c @@ -0,0 +1,73 @@ +/* + * 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/stat.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> + +#include "sudoers.h" + +/* + * Verify that path is a normal file and executable by root. + */ +bool +sudo_goodpath(const char *path, const char *runchroot, struct stat *sbp) +{ + bool ret = false; + debug_decl(sudo_goodpath, SUDOERS_DEBUG_UTIL); + + if (path != NULL) { + char pathbuf[PATH_MAX]; + struct stat sb; + + if (runchroot != NULL) { + const int len = + snprintf(pathbuf, sizeof(pathbuf), "%s%s", runchroot, path); + if (len >= ssizeof(pathbuf)) { + errno = ENAMETOOLONG; + goto done; + } + path = pathbuf; // -V507 + } + 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; + } + } +done: + debug_return_bool(ret); +} |