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/*
Unix SMB/CIFS implementation.
kerberos utility library
Copyright (C) Andrew Tridgell 2001
Copyright (C) Remus Koos 2001
Copyright (C) Nalin Dahyabhai 2004.
Copyright (C) Jeremy Allison 2004.
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "system/kerberos.h"
#include "auth/kerberos/kerberos.h"
#ifdef HAVE_KRB5
/*
simulate a kinit, putting the tgt in the given credentials cache.
Orignally by remus@snapserver.com
This version is built to use a keyblock, rather than needing the
original password.
The impersonate_principal is the principal if NULL, or the principal to impersonate
The target_service defaults to the krbtgt if NULL, but could be kpasswd/realm or the local service (if we are doing s4u2self)
*/
krb5_error_code kerberos_kinit_keyblock_cc(krb5_context ctx, krb5_ccache cc,
krb5_principal principal, krb5_keyblock *keyblock,
const char *target_service,
time_t *expire_time, time_t *kdc_time)
{
krb5_error_code code = 0;
krb5_creds my_creds;
krb5_get_init_creds_opt *options;
if ((code = krb5_get_init_creds_opt_alloc(ctx, &options))) {
return code;
}
krb5_get_init_creds_opt_set_default_flags(ctx, NULL, NULL, options);
if ((code = krb5_get_init_creds_keyblock(ctx, &my_creds, principal, keyblock,
0, target_service, options))) {
return code;
}
if ((code = krb5_cc_initialize(ctx, cc, principal))) {
krb5_get_init_creds_opt_free(ctx, options);
krb5_free_cred_contents(ctx, &my_creds);
return code;
}
if ((code = krb5_cc_store_cred(ctx, cc, &my_creds))) {
krb5_get_init_creds_opt_free(ctx, options);
krb5_free_cred_contents(ctx, &my_creds);
return code;
}
if (expire_time) {
*expire_time = (time_t) my_creds.times.endtime;
}
if (kdc_time) {
*kdc_time = (time_t) my_creds.times.starttime;
}
krb5_get_init_creds_opt_free(ctx, options);
krb5_free_cred_contents(ctx, &my_creds);
return 0;
}
/*
simulate a kinit, putting the tgt in the given credentials cache.
Orignally by remus@snapserver.com
The impersonate_principal is the principal if NULL, or the principal to impersonate
The target_service defaults to the krbtgt if NULL, but could be kpasswd/realm or the local service (if we are doing s4u2self)
*/
krb5_error_code kerberos_kinit_password_cc(krb5_context ctx, krb5_ccache cc,
krb5_principal principal, const char *password,
krb5_principal impersonate_principal, const char *target_service,
time_t *expire_time, time_t *kdc_time)
{
krb5_error_code code = 0;
krb5_creds my_creds;
krb5_creds *impersonate_creds;
krb5_get_init_creds_opt *init_options;
krb5_get_creds_opt options;
if ((code = krb5_get_init_creds_opt_alloc(ctx, &init_options))) {
return code;
}
krb5_get_init_creds_opt_set_default_flags(ctx, NULL, NULL, init_options);
/* If we are not impersonating, then get this ticket for the
* target service, otherwise a krbtgt, and get the next ticket
* for the target */
if ((code = krb5_get_init_creds_password(ctx, &my_creds, principal, password,
NULL, NULL,
0,
impersonate_principal ? NULL : target_service,
init_options))) {
krb5_get_init_creds_opt_free(ctx, init_options);
return code;
}
if ((code = krb5_cc_initialize(ctx, cc, principal))) {
krb5_get_init_creds_opt_free(ctx, init_options);
krb5_free_cred_contents(ctx, &my_creds);
return code;
}
if ((code = krb5_cc_store_cred(ctx, cc, &my_creds))) {
krb5_get_init_creds_opt_free(ctx, init_options);
krb5_free_cred_contents(ctx, &my_creds);
return code;
}
if (expire_time) {
*expire_time = (time_t) my_creds.times.endtime;
}
if (kdc_time) {
*kdc_time = (time_t) my_creds.times.starttime;
}
krb5_get_init_creds_opt_free(ctx, init_options);
krb5_free_cred_contents(ctx, &my_creds);
if (code == 0 && impersonate_principal) {
krb5_principal target_princ;
if ((code = krb5_get_creds_opt_alloc(ctx, &options))) {
return code;
}
if ((code = krb5_get_creds_opt_set_impersonate(ctx, options, impersonate_principal))) {
krb5_get_creds_opt_free(ctx, options);
return code;
}
if ((code = krb5_parse_name(ctx, target_service, &target_princ))) {
krb5_get_creds_opt_free(ctx, options);
return code;
}
if ((code = krb5_principal_set_realm(ctx, target_princ, krb5_principal_get_realm(ctx, principal)))) {
krb5_get_creds_opt_free(ctx, options);
krb5_free_principal(ctx, target_princ);
return code;
}
if ((code = krb5_get_creds(ctx, options, cc, target_princ, &impersonate_creds))) {
krb5_free_principal(ctx, target_princ);
krb5_get_creds_opt_free(ctx, options);
return code;
}
krb5_free_principal(ctx, target_princ);
code = krb5_cc_store_cred(ctx, cc, impersonate_creds);
krb5_get_creds_opt_free(ctx, options);
krb5_free_creds(ctx, impersonate_creds);
}
return 0;
}
#endif
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