Files
sudo/plugins/sudoers/goodpath.c
Todd C. Miller 3f022419ae Be consistent with the naming of the variable used to store the
function return value.  Previously, some code used "rval", some
used "ret".  This standardizes on "ret" and uses "rc" for temporary
return codes.
2016-09-08 16:38:08 -06:00

64 lines
1.8 KiB
C

/*
* Copyright (c) 1996, 1998-2005, 2010-2012, 2014-2016
* Todd C. Miller <Todd.Miller@courtesan.com>
*
* 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.
*/
#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, 0111))
ret = true;
else
errno = EACCES;
}
}
debug_return_bool(ret);
}