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| Current File : //usr/src/crypto/heimdal/kuser/kgetcred.c |
/*
* Copyright (c) 1997 - 2007 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.
*/
#include "kuser_locl.h"
RCSID("$Id: kgetcred.c 22276 2007-12-12 02:42:31Z lha $");
static char *cache_str;
static char *out_cache_str;
static char *delegation_cred_str;
static char *etype_str;
static int transit_flag = 1;
static int forwardable_flag;
static char *impersonate_str;
static char *nametype_str;
static int version_flag;
static int help_flag;
struct getargs args[] = {
{ "cache", 'c', arg_string, &cache_str,
"credential cache to use", "cache"},
{ "out-cache", 0, arg_string, &out_cache_str,
"credential cache to store credential in", "cache"},
{ "delegation-credential-cache",0,arg_string, &delegation_cred_str,
"where to find the ticket use for delegation", "cache"},
{ "forwardable", 0, arg_flag, &forwardable_flag,
"forwardable ticket requested"},
{ "transit-check", 0, arg_negative_flag, &transit_flag },
{ "enctype", 'e', arg_string, &etype_str,
"encryption type to use", "enctype"},
{ "impersonate", 0, arg_string, &impersonate_str,
"client to impersonate", "principal"},
{ "name-type", 0, arg_string, &nametype_str },
{ "version", 0, arg_flag, &version_flag },
{ "help", 0, arg_flag, &help_flag }
};
static void
usage (int ret)
{
arg_printusage (args,
sizeof(args)/sizeof(*args),
NULL,
"service");
exit (ret);
}
int
main(int argc, char **argv)
{
krb5_error_code ret;
krb5_context context;
krb5_ccache cache;
krb5_creds *out;
int optidx = 0;
krb5_get_creds_opt opt;
krb5_principal server;
krb5_principal impersonate = NULL;
setprogname (argv[0]);
ret = krb5_init_context (&context);
if (ret)
errx(1, "krb5_init_context failed: %d", ret);
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)
usage (1);
if(cache_str) {
ret = krb5_cc_resolve(context, cache_str, &cache);
if (ret)
krb5_err (context, 1, ret, "%s", cache_str);
} else {
ret = krb5_cc_default (context, &cache);
if (ret)
krb5_err (context, 1, ret, "krb5_cc_resolve");
}
ret = krb5_get_creds_opt_alloc(context, &opt);
if (ret)
krb5_err (context, 1, ret, "krb5_get_creds_opt_alloc");
if (etype_str) {
krb5_enctype enctype;
ret = krb5_string_to_enctype(context, etype_str, &enctype);
if (ret)
krb5_errx (context, 1, "unrecognized enctype: %s", etype_str);
krb5_get_creds_opt_set_enctype(context, opt, enctype);
}
if (impersonate_str) {
ret = krb5_parse_name(context, impersonate_str, &impersonate);
if (ret)
krb5_err (context, 1, ret, "krb5_parse_name %s", impersonate_str);
krb5_get_creds_opt_set_impersonate(context, opt, impersonate);
krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_STORE);
}
if (out_cache_str)
krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_STORE);
if (forwardable_flag)
krb5_get_creds_opt_add_options(context, opt, KRB5_GC_FORWARDABLE);
if (!transit_flag)
krb5_get_creds_opt_add_options(context, opt, KRB5_GC_NO_TRANSIT_CHECK);
if (delegation_cred_str) {
krb5_ccache id;
krb5_creds c, mc;
Ticket ticket;
krb5_cc_clear_mcred(&mc);
ret = krb5_cc_get_principal(context, cache, &mc.server);
if (ret)
krb5_err (context, 1, ret, "krb5_cc_get_principal");
ret = krb5_cc_resolve(context, delegation_cred_str, &id);
if(ret)
krb5_err (context, 1, ret, "krb5_cc_resolve");
ret = krb5_cc_retrieve_cred(context, id, 0, &mc, &c);
if(ret)
krb5_err (context, 1, ret, "krb5_cc_retrieve_cred");
ret = decode_Ticket(c.ticket.data, c.ticket.length, &ticket, NULL);
if (ret) {
krb5_clear_error_string(context);
krb5_err (context, 1, ret, "decode_Ticket");
}
krb5_free_cred_contents(context, &c);
ret = krb5_get_creds_opt_set_ticket(context, opt, &ticket);
if(ret)
krb5_err (context, 1, ret, "krb5_get_creds_opt_set_ticket");
free_Ticket(&ticket);
krb5_cc_close (context, id);
krb5_free_principal(context, mc.server);
krb5_get_creds_opt_add_options(context, opt,
KRB5_GC_CONSTRAINED_DELEGATION);
}
ret = krb5_parse_name(context, argv[0], &server);
if (ret)
krb5_err (context, 1, ret, "krb5_parse_name %s", argv[0]);
if (nametype_str) {
ret = krb5_parse_nametype(context, nametype_str,
&server->name.name_type);
if (ret)
krb5_err(context, 1, ret, "krb5_parse_nametype");
}
ret = krb5_get_creds(context, opt, cache, server, &out);
if (ret)
krb5_err (context, 1, ret, "krb5_get_creds");
if (out_cache_str) {
krb5_ccache id;
ret = krb5_cc_resolve(context, out_cache_str, &id);
if(ret)
krb5_err (context, 1, ret, "krb5_cc_resolve");
ret = krb5_cc_initialize(context, id, out->client);
if(ret)
krb5_err (context, 1, ret, "krb5_cc_initialize");
ret = krb5_cc_store_cred(context, id, out);
if(ret)
krb5_err (context, 1, ret, "krb5_cc_store_cred");
krb5_cc_close (context, id);
}
krb5_free_creds(context, out);
krb5_free_principal(context, server);
krb5_get_creds_opt_free(context, opt);
krb5_cc_close (context, cache);
krb5_free_context (context);
return 0;
}