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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* clients/kswitch/kswitch.c - Switch primary credential cache */
/*
* Copyright 2011 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.
*/
#include <locale.h>
#include "k5-int.h"
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
static char *progname;
static void
usage(void)
{
fprintf(stderr, _("Usage: %s {-c cache_name | -p principal}\n"), progname);
fprintf(stderr, _("\t-c specify name of credentials cache\n"));
fprintf(stderr, _("\t-p specify name of principal\n"));
exit(2);
}
int
main(int argc, char **argv)
{
krb5_context context;
krb5_error_code ret;
int c;
krb5_ccache cache = NULL;
krb5_principal princ = NULL;
const char *cache_name = NULL, *princ_name = NULL;
krb5_boolean errflag = FALSE;
setlocale(LC_ALL, "");
progname = GET_PROGNAME(argv[0]);
while ((c = getopt(argc, argv, "c:p:")) != -1) {
switch (c) {
case 'c':
case 'p':
if (cache_name || princ_name) {
fprintf(stderr, _("Only one -c or -p option allowed\n"));
errflag = TRUE;
} else if (c == 'c') {
cache_name = optarg;
} else {
princ_name = optarg;
}
break;
case '?':
default:
errflag = TRUE;
break;
}
}
if (optind != argc)
errflag = TRUE;
if (!cache_name && !princ_name) {
fprintf(stderr, _("One of -c or -p must be specified\n"));
errflag = TRUE;
}
if (errflag)
usage();
ret = krb5_init_context(&context);
if (ret) {
com_err(progname, ret, _("while initializing krb5"));
exit(1);
}
if (cache_name) {
ret = krb5_cc_resolve(context, cache_name, &cache);
if (ret != 0) {
com_err(progname, ret, _("while resolving %s"), cache_name);
exit(1);
}
} else {
ret = krb5_parse_name(context, princ_name, &princ);
if (ret) {
com_err(progname, ret, _("while parsing principal name %s"),
princ_name);
exit(1);
}
ret = krb5_cc_cache_match(context, princ, &cache);
if (ret) {
com_err(progname, ret, _("while searching for ccache for %s"),
princ_name);
exit(1);
}
}
ret = krb5_cc_switch(context, cache);
if (ret != 0) {
com_err(progname, ret, _("while switching to credential cache"));
exit(1);
}
return 0;
}
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