/*
    Authors:
        Sumit Bose <sbose@redhat.com>

    Copyright (C) 2009-2010 Red Hat

    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/>.
*/

#ifndef __SSS_KRB5_H__
#define __SSS_KRB5_H__

#include "config.h"

#include <stdbool.h>
#include <talloc.h>

#ifdef HAVE_KRB5_KRB5_H
#include <krb5/krb5.h>
#else
#include <krb5.h>
#endif

#include "util/util.h"

const char * KRB5_CALLCONV sss_krb5_get_error_message (krb5_context,
                                                   krb5_error_code);

void KRB5_CALLCONV sss_krb5_free_error_message(krb5_context, const char *);

krb5_error_code KRB5_CALLCONV sss_krb5_get_init_creds_opt_alloc(
                                                 krb5_context context,
                                                 krb5_get_init_creds_opt **opt);

void KRB5_CALLCONV sss_krb5_get_init_creds_opt_free (krb5_context context,
                                                  krb5_get_init_creds_opt *opt);

void KRB5_CALLCONV sss_krb5_free_unparsed_name(krb5_context context, char *name);

krb5_error_code check_for_valid_tgt(const char *ccname, const char *realm,
                                    const char *client_princ_str, bool *result);

int sss_krb5_verify_keytab(const char *principal,
                           const char *realm_str,
                           const char *keytab_name);

int sss_krb5_verify_keytab_ex(const char *principal, const char *keytab_name,
                              krb5_context context, krb5_keytab keytab);

#ifndef HAVE_KRB5_GET_INIT_CREDS_OPT_SET_EXPIRE_CALLBACK
typedef void krb5_expire_callback_func(krb5_context context, void *data,
                                             krb5_timestamp password_expiration,
                                             krb5_timestamp account_expiration,
                                             krb5_boolean is_last_req);
#endif
krb5_error_code KRB5_CALLCONV sss_krb5_get_init_creds_opt_set_expire_callback(
                                                   krb5_context context,
                                                   krb5_get_init_creds_opt *opt,
                                                   krb5_expire_callback_func cb,
                                                   void *data);

errno_t check_fast(const char *str, bool *use_fast);

krb5_error_code KRB5_CALLCONV sss_krb5_get_init_creds_opt_set_fast_ccache_name(
                                                  krb5_context context,
                                                  krb5_get_init_creds_opt *opt,
                                                  const char *fast_ccache_name);

krb5_error_code KRB5_CALLCONV sss_krb5_get_init_creds_opt_set_fast_flags(
                                                   krb5_context context,
                                                   krb5_get_init_creds_opt *opt,
                                                   krb5_flags flags);

#if HAVE_KRB5_GET_INIT_CREDS_OPT_SET_FAST_FLAGS
#define SSS_KRB5_FAST_REQUIRED KRB5_FAST_REQUIRED
#else
#define SSS_KRB5_FAST_REQUIRED 0
#endif

#endif /* __SSS_KRB5_H__ */