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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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "system/network.h"
#include "system/kerberos.h"
#include "system/time.h"
#include "auth/kerberos/kerberos.h"
#include "secrets.h"
#include "pstring.h"
#include "ads.h"
#ifdef HAVE_KRB5
#define LIBADS_CCACHE_NAME "MEMORY:libads"
/*
we use a prompter to avoid a crash bug in the kerberos libs when
dealing with empty passwords
this prompter is just a string copy ...
*/
static krb5_error_code
kerb_prompter(krb5_context ctx, void *data,
const char *name,
const char *banner,
int num_prompts,
krb5_prompt prompts[])
{
if (num_prompts == 0) return 0;
memset(prompts[0].reply->data, '\0', prompts[0].reply->length);
if (prompts[0].reply->length > 0) {
if (data) {
strncpy(prompts[0].reply->data, data, prompts[0].reply->length-1);
prompts[0].reply->length = strlen(prompts[0].reply->data);
} else {
prompts[0].reply->length = 0;
}
}
return 0;
}
/*
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.
*/
int kerberos_kinit_keyblock_cc(krb5_context ctx, krb5_ccache cc,
krb5_principal principal, krb5_keyblock *keyblock,
time_t *expire_time, time_t *kdc_time)
{
krb5_error_code code = 0;
krb5_creds my_creds;
krb5_get_init_creds_opt options;
krb5_get_init_creds_opt_init(&options);
if ((code = krb5_get_init_creds_keyblock(ctx, &my_creds, principal, keyblock,
0, NULL, &options))) {
return code;
}
if ((code = krb5_cc_initialize(ctx, cc, principal))) {
krb5_free_cred_contents(ctx, &my_creds);
return code;
}
if ((code = krb5_cc_store_cred(ctx, cc, &my_creds))) {
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_free_cred_contents(ctx, &my_creds);
return 0;
}
/*
simulate a kinit, putting the tgt in the given credentials cache.
Orignally by remus@snapserver.com
*/
int kerberos_kinit_password_cc(krb5_context ctx, krb5_ccache cc,
krb5_principal principal, const char *password,
time_t *expire_time, time_t *kdc_time)
{
krb5_error_code code = 0;
krb5_creds my_creds;
krb5_get_init_creds_opt options;
krb5_get_init_creds_opt_init(&options);
if ((code = krb5_get_init_creds_password(ctx, &my_creds, principal, password,
kerb_prompter,
NULL, 0, NULL, &options))) {
return code;
}
if ((code = krb5_cc_initialize(ctx, cc, principal))) {
krb5_free_cred_contents(ctx, &my_creds);
return code;
}
if ((code = krb5_cc_store_cred(ctx, cc, &my_creds))) {
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_free_cred_contents(ctx, &my_creds);
return 0;
}
#endif
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