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/*
* Copyright (c) 2004 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
RCSID("$Id: copy_cred_cache.c 15542 2005-07-01 07:20:54Z lha $");
#endif
#include <stdlib.h>
#include <krb5.h>
#include <roken.h>
#include <getarg.h>
#include <parse_units.h>
#include <parse_time.h>
static int krbtgt_only_flag;
static char *service_string;
static char *enctype_string;
static char *flags_string;
static char *valid_string;
static int fcache_version;
static int help_flag;
static int version_flag;
static struct getargs args[] = {
{ "krbtgt-only", 0, arg_flag, &krbtgt_only_flag,
"only copy local krbtgt" },
{ "service", 0, arg_string, &service_string,
"limit to this service", "principal" },
{ "enctype", 0, arg_string, &enctype_string,
"limit to this enctype", "enctype" },
{ "flags", 0, arg_string, &flags_string,
"limit to these flags", "ticketflags" },
{ "valid-for", 0, arg_string, &valid_string,
"limit to creds valid for at least this long", "time" },
{ "fcache-version", 0, arg_integer, &fcache_version,
"file cache version to create" },
{ "version", 0, arg_flag, &version_flag },
{ "help", 'h', arg_flag, &help_flag }
};
static void
usage(int ret)
{
arg_printusage(args,
sizeof(args) / sizeof(*args),
NULL,
"[from-cache] to-cache");
exit(ret);
}
static int32_t
bitswap32(int32_t b)
{
int32_t r = 0;
int i;
for (i = 0; i < 32; i++) {
r = r << 1 | (b & 1);
b = b >> 1;
}
return r;
}
static void
parse_ticket_flags(krb5_context context,
const char *string, krb5_ticket_flags *ret_flags)
{
TicketFlags ff;
int flags = parse_flags(string, asn1_TicketFlags_units(), 0);
if (flags == -1) /* XXX */
krb5_errx(context, 1, "bad flags specified: \"%s\"", string);
memset(&ff, 0, sizeof(ff));
ff.proxy = 1;
if (parse_flags("proxy", asn1_TicketFlags_units(), 0) == TicketFlags2int(ff))
ret_flags->i = flags;
else
ret_flags->i = bitswap32(flags);
}
int
main(int argc, char **argv)
{
krb5_error_code ret;
krb5_context context;
int optidx = 0;
const char *from_name, *to_name;
krb5_ccache from_ccache, to_ccache;
krb5_flags whichfields = 0;
krb5_creds mcreds;
unsigned int matched;
setprogname(argv[0]);
memset(&mcreds, 0, sizeof(mcreds));
if (getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
usage(1);
if (help_flag)
usage(0);
if (version_flag) {
print_version(NULL);
exit(0);
}
argc -= optidx;
argv += optidx;
if (argc < 1 || argc > 2)
usage(1);
if (krb5_init_context(&context))
errx(1, "krb5_init_context failed");
if (service_string) {
ret = krb5_parse_name(context, service_string, &mcreds.server);
if (ret)
krb5_err(context, 1, ret, "%s", service_string);
}
if (enctype_string) {
krb5_enctype enctype;
ret = krb5_string_to_enctype(context, enctype_string, &enctype);
if (ret)
krb5_err(context, 1, ret, "%s", enctype_string);
whichfields |= KRB5_TC_MATCH_KEYTYPE;
mcreds.session.keytype = enctype;
}
if (flags_string) {
parse_ticket_flags(context, flags_string, &mcreds.flags);
whichfields |= KRB5_TC_MATCH_FLAGS;
}
if (valid_string) {
time_t t = parse_time(valid_string, "s");
if(t < 0)
errx(1, "unknown time \"%s\"", valid_string);
mcreds.times.endtime = time(NULL) + t;
whichfields |= KRB5_TC_MATCH_TIMES;
}
if (fcache_version)
krb5_set_fcache_version(context, fcache_version);
if (argc == 1) {
from_name = krb5_cc_default_name(context);
to_name = argv[0];
} else {
from_name = argv[0];
to_name = argv[1];
}
ret = krb5_cc_resolve(context, from_name, &from_ccache);
if (ret)
krb5_err(context, 1, ret, "%s", from_name);
if (krbtgt_only_flag) {
krb5_principal client;
ret = krb5_cc_get_principal(context, from_ccache, &client);
if (ret)
krb5_err(context, 1, ret, "getting default principal");
ret = krb5_make_principal(context, &mcreds.server,
krb5_principal_get_realm(context, client),
KRB5_TGS_NAME,
krb5_principal_get_realm(context, client),
NULL);
if (ret)
krb5_err(context, 1, ret, "constructing krbtgt principal");
krb5_free_principal(context, client);
}
ret = krb5_cc_resolve(context, to_name, &to_ccache);
if (ret)
krb5_err(context, 1, ret, "%s", to_name);
ret = krb5_cc_copy_cache_match(context, from_ccache, to_ccache,
whichfields, &mcreds, &matched);
if (ret)
krb5_err(context, 1, ret, "copying cred cache");
krb5_cc_close(context, from_ccache);
if(matched == 0)
krb5_cc_destroy(context, to_ccache);
else
krb5_cc_close(context, to_ccache);
krb5_free_context(context);
return matched == 0;
}
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