Add tool for printing tickets.
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@18102 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
331
kuser/kimpersonate.c
Normal file
331
kuser/kimpersonate.c
Normal file
@@ -0,0 +1,331 @@
|
||||
/*
|
||||
* Copyright (c) 2000 - 2003 Kungliga Tekniska H<>gskolan
|
||||
* (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("$Id$");
|
||||
#include <parse_units.h>
|
||||
|
||||
static char *client_principal_str = NULL;
|
||||
static krb5_principal client_principal;
|
||||
static char *server_principal_str = NULL;
|
||||
static krb5_principal server_principal;
|
||||
|
||||
static char *ccache_str = NULL;
|
||||
|
||||
static char *ticket_flags_str = NULL;
|
||||
static TicketFlags ticket_flags;
|
||||
static char *keytab_file = NULL;
|
||||
static char *enc_type = "des-cbc-md5";
|
||||
static int expiration_time = 3600;
|
||||
static struct getarg_strings client_addresses;
|
||||
static int version_flag = 0;
|
||||
static int help_flag = 0;
|
||||
static int use_krb5 = 1;
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
static void
|
||||
encode_ticket (krb5_context context,
|
||||
EncryptionKey *skey,
|
||||
krb5_enctype etype,
|
||||
int skvno,
|
||||
krb5_creds *cred)
|
||||
{
|
||||
size_t len, size;
|
||||
char *buf;
|
||||
krb5_error_code ret;
|
||||
krb5_crypto crypto;
|
||||
EncryptedData enc_part;
|
||||
EncTicketPart et;
|
||||
Ticket ticket;
|
||||
|
||||
memset (&enc_part, 0, sizeof(enc_part));
|
||||
memset (&ticket, 0, sizeof(ticket));
|
||||
|
||||
/*
|
||||
* Set up `enc_part'
|
||||
*/
|
||||
|
||||
et.flags = cred->flags.b;
|
||||
et.key = cred->session;
|
||||
et.crealm = *krb5_princ_realm (context, cred->client);
|
||||
copy_PrincipalName(&cred->client->name, &et.cname);
|
||||
{
|
||||
krb5_data empty_string;
|
||||
|
||||
krb5_data_zero(&empty_string);
|
||||
et.transited.tr_type = DOMAIN_X500_COMPRESS;
|
||||
et.transited.contents = empty_string;
|
||||
}
|
||||
et.authtime = cred->times.authtime;
|
||||
et.starttime = NULL;
|
||||
et.endtime = cred->times.endtime;
|
||||
et.renew_till = NULL;
|
||||
et.caddr = &cred->addresses;
|
||||
et.authorization_data = NULL; /* XXX allow random authorization_data */
|
||||
|
||||
/*
|
||||
* Encrypt `enc_part' of ticket with service key
|
||||
*/
|
||||
|
||||
ASN1_MALLOC_ENCODE(EncTicketPart, buf, len, &et, &size, ret);
|
||||
if (ret)
|
||||
krb5_err(context, 1, ret, "EncTicketPart");
|
||||
|
||||
krb5_crypto_init(context, skey, etype, &crypto);
|
||||
krb5_encrypt_EncryptedData (context,
|
||||
crypto,
|
||||
KRB5_KU_TICKET,
|
||||
buf,
|
||||
len,
|
||||
skvno,
|
||||
&ticket.enc_part);
|
||||
free(buf);
|
||||
krb5_crypto_destroy(context, crypto);
|
||||
|
||||
/*
|
||||
* Encode ticket
|
||||
*/
|
||||
|
||||
ticket.tkt_vno = 5;
|
||||
ticket.tkt_vno = skvno;
|
||||
ticket.realm = *krb5_princ_realm (context, cred->server);
|
||||
copy_PrincipalName(&cred->server->name, &ticket.sname);
|
||||
|
||||
ASN1_MALLOC_ENCODE(Ticket, buf, len, &ticket, &size, ret);
|
||||
if(ret)
|
||||
krb5_err (context, 1, ret, "encode_Ticket");
|
||||
|
||||
krb5_data_copy(&cred->ticket, buf, len);
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
static int
|
||||
create_krb5_tickets (krb5_context context, krb5_keytab kt)
|
||||
{
|
||||
krb5_error_code ret;
|
||||
krb5_keytab_entry entry;
|
||||
krb5_creds cred;
|
||||
krb5_enctype etype;
|
||||
krb5_ccache ccache;
|
||||
|
||||
memset (&cred, 0, sizeof(cred));
|
||||
|
||||
ret = krb5_string_to_enctype (context, enc_type, &etype);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "krb5_string_to_enctype");
|
||||
ret = krb5_kt_get_entry (context, kt, server_principal,
|
||||
0, etype, &entry);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "krb5_kt_get_entry");
|
||||
|
||||
/*
|
||||
* setup cred
|
||||
*/
|
||||
|
||||
|
||||
ret = krb5_copy_principal (context, client_principal, &cred.client);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "krb5_copy_principal");
|
||||
ret = krb5_copy_principal (context, server_principal, &cred.server);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "krb5_copy_principal");
|
||||
krb5_generate_random_keyblock(context, etype, &cred.session);
|
||||
|
||||
cred.times.authtime = time(NULL);
|
||||
cred.times.starttime = time(NULL);
|
||||
cred.times.endtime = time(NULL) + expiration_time;
|
||||
cred.times.renew_till = 0;
|
||||
krb5_data_zero(&cred.second_ticket);
|
||||
|
||||
ret = krb5_get_all_client_addrs (context, &cred.addresses);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "krb5_get_all_client_addrs");
|
||||
cred.flags.b = ticket_flags;
|
||||
|
||||
|
||||
/*
|
||||
* Encode encrypted part of ticket
|
||||
*/
|
||||
|
||||
encode_ticket (context, &entry.keyblock, etype, entry.vno, &cred);
|
||||
|
||||
/*
|
||||
* Write to cc
|
||||
*/
|
||||
|
||||
if (ccache_str) {
|
||||
ret = krb5_cc_resolve(context, ccache_str, &ccache);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "krb5_cc_resolve");
|
||||
} else {
|
||||
ret = krb5_cc_default (context, &ccache);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "krb5_cc_default");
|
||||
}
|
||||
|
||||
ret = krb5_cc_initialize (context, ccache, cred.client);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "krb5_cc_initialize");
|
||||
|
||||
ret = krb5_cc_store_cred (context, ccache, &cred);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "krb5_cc_store_cred");
|
||||
|
||||
krb5_free_creds_contents (context, &cred);
|
||||
krb5_cc_close (context, ccache);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
static void
|
||||
setup_env (krb5_context context, krb5_keytab *kt)
|
||||
{
|
||||
krb5_error_code ret;
|
||||
|
||||
if (keytab_file)
|
||||
ret = krb5_kt_resolve (context, keytab_file, kt);
|
||||
else
|
||||
ret = krb5_kt_default (context, kt);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "resolving keytab");
|
||||
|
||||
if (client_principal_str == NULL)
|
||||
krb5_errx (context, 1, "missing client principal");
|
||||
ret = krb5_parse_name (context, client_principal_str, &client_principal);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "resolvning client name");
|
||||
|
||||
if (server_principal_str == NULL)
|
||||
krb5_errx (context, 1, "missing server principal");
|
||||
ret = krb5_parse_name (context, server_principal_str, &server_principal);
|
||||
if (ret)
|
||||
krb5_err (context, 1, ret, "resolvning client name");
|
||||
|
||||
if (ticket_flags_str) {
|
||||
int ticket_flags_int;
|
||||
|
||||
ticket_flags_int = parse_flags(ticket_flags_str,
|
||||
asn1_TicketFlags_units(), 0);
|
||||
if (ticket_flags_int <= 0) {
|
||||
krb5_warnx (context, "bad ticket flags: `%s'", ticket_flags_str);
|
||||
print_flags_table (asn1_TicketFlags_units(), stderr);
|
||||
exit (1);
|
||||
}
|
||||
if (ticket_flags_int)
|
||||
ticket_flags = int2TicketFlags (ticket_flags_int);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
struct getargs args[] = {
|
||||
{ "ccache", 0, arg_string, &ccache_str,
|
||||
"name of kerberos 5 credential cache", "cache-name"},
|
||||
{ "server", 's', arg_string, &server_principal_str,
|
||||
"name of server principal" },
|
||||
{ "client", 'c', arg_string, &client_principal_str,
|
||||
"name of client principal" },
|
||||
{ "keytab", 'k', arg_string, &keytab_file,
|
||||
"name of keytab file" },
|
||||
{ "krb5", '5', arg_flag, &use_krb5,
|
||||
"create a kerberos 5 ticket"},
|
||||
{ "expire-time", 'e', arg_integer, &expiration_time,
|
||||
"lifetime of ticket in seconds" },
|
||||
{ "client-addresses", 'a', arg_strings, &client_addresses,
|
||||
"addresses of client" },
|
||||
{ "enc-type", 't', arg_string, &enc_type,
|
||||
"encryption type" },
|
||||
{ "ticket-flags", 'f', arg_string, &ticket_flags_str,
|
||||
"ticket flags for krb5 ticket" },
|
||||
{ "version", 0, arg_flag, &version_flag, "Print version",
|
||||
NULL },
|
||||
{ "help", 0, arg_flag, &help_flag, NULL,
|
||||
NULL }
|
||||
};
|
||||
|
||||
static void
|
||||
usage (int ret)
|
||||
{
|
||||
arg_printusage (args,
|
||||
sizeof(args) / sizeof(args[0]),
|
||||
NULL,
|
||||
"");
|
||||
exit (ret);
|
||||
}
|
||||
|
||||
int
|
||||
main (int argc, char **argv)
|
||||
{
|
||||
int optind = 0;
|
||||
krb5_error_code ret;
|
||||
krb5_context context;
|
||||
krb5_keytab kt;
|
||||
|
||||
setprogname (argv[0]);
|
||||
|
||||
ret = krb5_init_context (&context);
|
||||
if (ret)
|
||||
errx(1, "krb5_init_context failed: %u", ret);
|
||||
|
||||
if (getarg (args, sizeof(args) / sizeof(args[0]), argc, argv,
|
||||
&optind))
|
||||
usage (1);
|
||||
|
||||
if (help_flag)
|
||||
usage (0);
|
||||
|
||||
if (version_flag) {
|
||||
print_version(NULL);
|
||||
return 0;
|
||||
}
|
||||
|
||||
setup_env (context, &kt);
|
||||
|
||||
if (use_krb5)
|
||||
create_krb5_tickets (context, kt);
|
||||
|
||||
krb5_kt_close (context, kt);
|
||||
return 0;
|
||||
}
|
||||
Reference in New Issue
Block a user