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/* $OpenBSD: dest_tkt.c,v 1.5 1998/02/25 15:51:06 art Exp $ */
/* $KTH: dest_tkt.c,v 1.11 1997/05/19 03:03:40 assar Exp $ */
/*
* This source code is no longer held under any constraint of USA
* `cryptographic laws' since it was exported legally. The cryptographic
* functions were removed from the code and a "Bones" distribution was
* made. A Commodity Jurisdiction Request #012-94 was filed with the
* USA State Department, who handed it to the Commerce department. The
* code was determined to fall under General License GTDA under ECCN 5D96G,
* and hence exportable. The cryptographic interfaces were re-added by Eric
* Young, and then KTH proceeded to maintain the code in the free world.
*
*/
/*
* Copyright (C) 1989 by the Massachusetts Institute of Technology
*
* Export of this software from the United States of America is assumed
* to require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*/
#include "krb_locl.h"
/*
* dest_tkt() is used to destroy the ticket store upon logout.
* If the ticket file does not exist, dest_tkt() returns RET_TKFIL.
* Otherwise the function returns RET_OK on success, KFAILURE on
* failure.
*
* The ticket file (TKT_FILE) is defined in "krb.h".
*/
int
dest_tkt(void)
{
char *file = TKT_FILE;
int i,fd;
struct stat statb;
char buf[BUFSIZ];
errno = 0;
if (lstat(file, &statb) < 0)
goto out;
if (!(statb.st_mode & S_IFREG)
#ifdef notdef
|| statb.st_mode & 077
#endif
)
goto out;
if ((fd = open(file, O_RDWR, 0)) < 0)
goto out;
memset(buf, 0, BUFSIZ);
for (i = 0; i < statb.st_size; i += sizeof(buf))
if (write(fd, buf, sizeof(buf)) != sizeof(buf)) {
fsync(fd);
close(fd);
goto out;
}
fsync(fd);
close(fd);
unlink(file);
out:
if (errno == ENOENT) return RET_TKFIL;
else if (errno != 0) return KFAILURE;
return(KSUCCESS);
}
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