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/*
* Copyright (c) 2011, Secure Endpoints Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "krb5_locl.h"
#include <err.h>
#include <getarg.h>
#if 0
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <unistd.h>
#include <krb5.h>
#endif
int
main(int argc, char **argv)
{
krb5_error_code ret;
krb5_context context;
krb5_ccache src_cc = NULL;
krb5_ccache dst_cc = NULL;
krb5_cc_cursor cursor;
krb5_principal me = NULL;
krb5_creds cred;
const char *during;
Ticket t;
size_t len;
int make_kvno_absent = 0;
int opt;
memset(&cred, 0, sizeof (cred));
during = "init_context";
ret = krb5_init_context(&context);
if (ret) goto err;
while ((opt = getopt(argc, argv, "c:n")) != -1) {
switch (opt) {
case 'c':
during = "cc_resolve of source ccache";
ret = krb5_cc_resolve(context, optarg, &src_cc);
if (ret) goto err;
break;
case 'n':
make_kvno_absent++;
break;
case 'h':
default:
fprintf(stderr, "Usage: %s [-n] [-c ccache]\n"
"\tThis utility edits a ccache, setting all ticket\n"
"\tenc_part kvnos to zero or absent (if -n is set).\n",
argv[0]);
return 1;
}
}
if (!src_cc) {
during = "cc_default";
ret = krb5_cc_default(context, &src_cc);
if (ret) goto err;
}
during = "cc_get_principal";
ret = krb5_cc_get_principal(context, src_cc, &me);
if (ret) goto err;
if (optind != argc) {
fprintf(stderr, "Usage: %s [-n] [-c ccache]\n"
"\tThis utility edits a ccache, setting all ticket\n"
"\tenc_part kvnos to zero or absent (if -n is set).\n",
argv[0]);
return 1;
}
during = "cc_new_unique of temporary ccache";
ret = krb5_cc_new_unique(context, krb5_cc_get_type(context, src_cc),
NULL, &dst_cc);
during = "cc_initialize of temporary ccache";
ret = krb5_cc_initialize(context, dst_cc, me);
if (ret) goto err;
during = "cc_start_seq_get";
ret = krb5_cc_start_seq_get(context, src_cc, &cursor);
if (ret) goto err;
while ((ret = krb5_cc_next_cred(context, src_cc, &cursor, &cred)) == 0) {
krb5_data data;
during = "decode_Ticket";
memset(&t, 0, sizeof (t));
ret = decode_Ticket(cred.ticket.data, cred.ticket.length, &t, &len);
if (ret == ASN1_MISSING_FIELD) {
krb5_free_cred_contents(context, &cred);
memset(&cred, 0, sizeof (cred));
continue;
}
if (ret) goto err;
if (t.enc_part.kvno) {
*t.enc_part.kvno = 0;
if (make_kvno_absent) {
free(t.enc_part.kvno);
t.enc_part.kvno = NULL;
}
/*
* The new Ticket has to need less or same space as before, so
* we reuse cred->icket.data.
*/
during = "encode_Ticket";
ASN1_MALLOC_ENCODE(Ticket, data.data, data.length, &t, &len, ret);
if (ret) {
free_Ticket(&t);
goto err;
}
krb5_data_free(&cred.ticket);
cred.ticket = data;
}
free_Ticket(&t);
during = "cc_store_cred";
ret = krb5_cc_store_cred(context, dst_cc, &cred);
if (ret) goto err;
krb5_free_cred_contents(context, &cred);
memset(&cred, 0, sizeof (cred));
}
during = "cc_next_cred";
if (ret != KRB5_CC_END) goto err;
during = "cc_end_seq_get";
ret = krb5_cc_end_seq_get(context, src_cc, &cursor);
if (ret) goto err;
during = "cc_move";
ret = krb5_cc_move(context, dst_cc, src_cc);
if (ret) goto err;
dst_cc = NULL;
during = "cc_switch";
ret = krb5_cc_switch(context, src_cc);
if (ret) goto err;
err:
(void) krb5_free_principal(context, me);
if (src_cc)
(void) krb5_cc_close(context, src_cc);
if (dst_cc)
(void) krb5_cc_destroy(context, dst_cc);
if (ret) {
fprintf(stderr, "Failed while doing %s (%d)\n", during, ret);
ret = 1;
}
return (ret);
}
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