68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*
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* Copyright (c) 1996, 1998-2005 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Sponsored in part by the Defense Advanced Research Projects
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* Agency (DARPA) and Air Force Research Laboratory, Air Force
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* Materiel Command, USAF, under agreement number F39502-99-1-0512.
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*/
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#include <config.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <stdio.h>
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#ifdef HAVE_STRING_H
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# include <string.h>
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#else
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# ifdef HAVE_STRINGS_H
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# include <strings.h>
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# endif
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#endif /* HAVE_STRING_H */
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif /* HAVE_UNISTD_H */
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#include <errno.h>
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#include "sudo.h"
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/*
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* Verify that path is a normal file and executable by root.
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*/
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char *
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sudo_goodpath(path, sbp)
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const char *path;
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struct stat *sbp;
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{
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struct stat sb;
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/* Check for brain damage */
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if (path == NULL || path[0] == '\0')
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return(NULL);
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if (stat(path, &sb))
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return(NULL);
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/* Make sure path describes an executable regular file. */
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if (!S_ISREG(sb.st_mode) || !(sb.st_mode & 0000111)) {
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errno = EACCES;
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return(NULL);
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}
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if (sbp != NULL)
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(void) memcpy(sbp, &sb, sizeof(struct stat));
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return((char *)path);
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}
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