1/* 2 * Copyright (c) 1996, 1998-2005, 2010 3 * Todd C. Miller <Todd.Miller@courtesan.com> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 * 17 * Sponsored in part by the Defense Advanced Research Projects 18 * Agency (DARPA) and Air Force Research Laboratory, Air Force 19 * Materiel Command, USAF, under agreement number F39502-99-1-0512. 20 */ 21 22#include <config.h> 23 24#include <sys/types.h> 25#include <sys/stat.h> 26#include <sys/param.h> 27#include <stdio.h> 28#ifdef HAVE_STRING_H 29# include <string.h> 30#endif /* HAVE_STRING_H */ 31#ifdef HAVE_STRINGS_H 32# include <strings.h> 33#endif /* HAVE_STRINGS_H */ 34#ifdef HAVE_UNISTD_H 35# include <unistd.h> 36#endif /* HAVE_UNISTD_H */ 37#include <errno.h> 38 39#include "sudo.h" 40 41/* 42 * Verify that path is a normal file and executable by root. 43 */ 44int 45sudo_goodpath(path, sbp) 46 const char *path; 47 struct stat *sbp; 48{ 49 struct stat sb; 50 int rval = FALSE; 51 52 if (path != NULL && stat(path, &sb) == 0) { 53 /* Make sure path describes an executable regular file. */ 54 if (S_ISREG(sb.st_mode) && ISSET(sb.st_mode, 0111)) 55 rval = TRUE; 56 else 57 errno = EACCES; 58 if (sbp) 59 (void) memcpy(sbp, &sb, sizeof(struct stat)); 60 } 61 62 return rval; 63} 64