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/*
* clients/kdestroy/kdestroy.c
*
* Copyright 1990 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* 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. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* 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.
*
*
* Destroy the contents of your credential cache.
*/
#include <krb5.h>
#include <com_err.h>
#include <string.h>
#include <stdio.h>
#ifdef KRB5_KRB4_COMPAT
#include <kerberosIV/krb.h>
#endif
#ifdef __STDC__
#define BELL_CHAR '\a'
#else
#define BELL_CHAR '\007'
#endif
extern int optind;
extern char *optarg;
#ifndef _WIN32
#define GET_PROGNAME(x) (strrchr((x), '/') ? strrchr((x), '/')+1 : (x))
#else
#define GET_PROGNAME(x) max(max(strrchr((x), '/'), strrchr((x), '\\')) + 1,(x))
#endif
char *progname;
int got_k5 = 0;
int got_k4 = 0;
int default_k5 = 1;
#ifdef KRB5_KRB4_COMPAT
int default_k4 = 1;
#else
int default_k4 = 0;
#endif
void usage()
{
#define KRB_AVAIL_STRING(x) ((x)?"available":"not available")
fprintf(stderr, "Usage: %s [-5] [-4] [-q] [-c cache_name]\n", progname);
fprintf(stderr, "\t-5 Kerberos 5 (%s)\n", KRB_AVAIL_STRING(got_k5));
fprintf(stderr, "\t-4 Kerberos 4 (%s)\n", KRB_AVAIL_STRING(got_k4));
fprintf(stderr, "\t (Default is %s%s%s%s)\n",
default_k5?"Kerberos 5":"",
(default_k5 && default_k4)?" and ":"",
default_k4?"Kerberos 4":"",
(!default_k5 && !default_k4)?"neither":"");
fprintf(stderr, "\t-q quiet mode\n");
fprintf(stderr, "\t-c specify name of credentials cache\n");
exit(2);
}
int
main(argc, argv)
int argc;
char **argv;
{
krb5_context kcontext;
krb5_error_code retval;
int c;
krb5_ccache cache = NULL;
char *cache_name = NULL;
int code = 0;
int v4code = 0;
int errflg = 0;
int quiet = 0;
int v4 = 1;
int use_k5 = 0;
int use_k4 = 0;
progname = GET_PROGNAME(argv[0]);
got_k5 = 1;
#ifdef KRB5_KRB4_COMPAT
got_k4 = 1;
#endif
while ((c = getopt(argc, argv, "54qc:")) != -1) {
switch (c) {
case 'q':
quiet = 1;
break;
case 'c':
if (cache_name) {
fprintf(stderr, "Only one -c option allowed\n");
errflg++;
} else {
cache_name = optarg;
}
break;
case '4':
if (!got_k4)
{
#ifdef KRB5_KRB4_COMPAT
fprintf(stderr, "Kerberos 4 support could not be loaded\n");
#else
fprintf(stderr, "This was not built with Kerberos 4 support\n");
#endif
exit(3);
}
use_k4 = 1;
break;
case '5':
if (!got_k5)
{
fprintf(stderr, "Kerberos 5 support could not be loaded\n");
exit(3);
}
use_k5 = 1;
break;
case '?':
default:
errflg++;
break;
}
}
if (optind != argc)
errflg++;
if (errflg) {
usage();
}
if (!use_k5 && !use_k4)
{
use_k5 = default_k5;
use_k4 = default_k4;
}
if (!use_k5)
got_k5 = 0;
if (!use_k4)
got_k4 = 0;
if (got_k5) {
retval = krb5_init_context(&kcontext);
if (retval) {
com_err(progname, retval, "while initializing krb5");
exit(1);
}
if (cache_name) {
v4 = 0; /* Don't do v4 if doing v5 and cache name given. */
code = krb5_cc_resolve (kcontext, cache_name, &cache);
if (code != 0) {
com_err (progname, code, "while resolving %s", cache_name);
exit(1);
}
} else {
if (code = krb5_cc_default(kcontext, &cache)) {
com_err(progname, code, "while getting default ccache");
exit(1);
}
}
code = krb5_cc_destroy (kcontext, cache);
if (code != 0) {
com_err (progname, code, "while destroying cache");
if (code != KRB5_FCC_NOFILE) {
if (quiet)
fprintf(stderr, "Ticket cache NOT destroyed!\n");
else {
fprintf(stderr, "Ticket cache %cNOT%c destroyed!\n",
BELL_CHAR, BELL_CHAR);
}
errflg = 1;
}
}
}
#ifdef KRB5_KRB4_COMPAT
if (got_k4 && v4) {
v4code = dest_tkt();
if (v4code == KSUCCESS && code != 0)
fprintf(stderr, "Kerberos 4 ticket cache destroyed.\n");
if (v4code != KSUCCESS && v4code != RET_TKFIL) {
if (quiet)
fprintf(stderr, "Kerberos 4 ticket cache NOT destroyed!\n");
else
fprintf(stderr, "Kerberos 4 ticket cache %cNOT%c destroyed!\n",
BELL_CHAR, BELL_CHAR);
errflg = 1;
}
}
#endif
return errflg;
}
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