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/*
 * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation
 *
 * Author: Nikos Mavroyanopoulos <nmav@hellug.gr>
 *
 * This file is part of GNUTLS.
 *
 * The GNUTLS library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 *
 */

#ifndef GNUTLS_UI_H
# define GNUTLS_UI_H

typedef enum gnutls_x509_subject_alt_name_t {
    GNUTLS_SAN_DNSNAME = 1, GNUTLS_SAN_RFC822NAME,
    GNUTLS_SAN_URI, GNUTLS_SAN_IPADDRESS
} gnutls_x509_subject_alt_name_t;

# ifdef LIBGNUTLS_VERSION	/* These are defined only in gnutls.h */

struct gnutls_openpgp_key_int;
typedef struct gnutls_openpgp_key_int *gnutls_openpgp_key_t;

struct gnutls_openpgp_privkey_int;
typedef struct gnutls_openpgp_privkey_int *gnutls_openpgp_privkey_t;

typedef struct gnutls_retr_st {
    gnutls_certificate_type_t type;
    union cert {
	gnutls_x509_crt_t *x509;
	gnutls_openpgp_key_t pgp;
    } cert;
    unsigned int ncerts;	/* one for pgp keys */

    union key {
	gnutls_x509_privkey_t x509;
	gnutls_openpgp_privkey_t pgp;
    } key;

    unsigned int deinit_all;	/* if non zero all keys will be deinited */
} gnutls_retr_st;

typedef int gnutls_certificate_client_retrieve_function(gnutls_session_t,
							const
							gnutls_datum_t *
							req_ca_rdn,
							int nreqs,
							const
							gnutls_pk_algorithm_t
							* pk_algos,
							int
							pk_algos_length,
							gnutls_retr_st *);
typedef int gnutls_certificate_server_retrieve_function(gnutls_session_t,
							gnutls_retr_st *);


/* Functions that allow auth_info_t structures handling
 */

gnutls_credentials_type_t gnutls_auth_get_type(gnutls_session_t session);
gnutls_credentials_type_t gnutls_auth_server_get_type(gnutls_session_t
						      session);
gnutls_credentials_type_t gnutls_auth_client_get_type(gnutls_session_t
						      session);

/* DH */

void gnutls_dh_set_prime_bits(gnutls_session_t session, int bits);
int gnutls_dh_get_secret_bits(gnutls_session_t session);
int gnutls_dh_get_peers_public_bits(gnutls_session_t session);
int gnutls_dh_get_prime_bits(gnutls_session_t session);

int gnutls_dh_get_group(gnutls_session_t session, gnutls_datum_t * raw_gen,
			gnutls_datum_t * raw_prime);
int gnutls_dh_get_pubkey(gnutls_session_t session,
			 gnutls_datum_t * raw_key);

/* RSA */
int gnutls_rsa_export_get_pubkey(gnutls_session_t session,
				 gnutls_datum_t * exp,
				 gnutls_datum_t * mod);
int gnutls_rsa_export_get_modulus_bits(gnutls_session_t session);

/* X509PKI */

/* These are set on the credentials structure.
 */
void gnutls_certificate_client_set_retrieve_function
    (gnutls_certificate_credentials_t cred,
     gnutls_certificate_client_retrieve_function * func);
void gnutls_certificate_server_set_retrieve_function
    (gnutls_certificate_credentials_t cred,
     gnutls_certificate_server_retrieve_function * func);

void gnutls_certificate_server_set_request(gnutls_session_t session,
					   gnutls_certificate_request_t
					   req);

/* get data from the session 
 */
const gnutls_datum_t *gnutls_certificate_get_peers(gnutls_session_t
						   session, unsigned int
						   *list_size);
const gnutls_datum_t *gnutls_certificate_get_ours(gnutls_session_t
						  session);

time_t gnutls_certificate_activation_time_peers(gnutls_session_t session);
time_t gnutls_certificate_expiration_time_peers(gnutls_session_t session);

int gnutls_certificate_client_get_request_status(gnutls_session_t session);
int gnutls_certificate_verify_peers2(gnutls_session_t session,
				     unsigned int *status);

/* this is obsolete (?). */
int gnutls_certificate_verify_peers(gnutls_session_t session);

int gnutls_pem_base64_encode(const char *msg, const gnutls_datum_t * data,
			     char *result, size_t * result_size);
int gnutls_pem_base64_decode(const char *header,
			     const gnutls_datum_t * b64_data,
			     unsigned char *result, size_t * result_size);

int gnutls_pem_base64_encode_alloc(const char *msg,
				   const gnutls_datum_t * data,
				   gnutls_datum_t * result);
int gnutls_pem_base64_decode_alloc(const char *header,
				   const gnutls_datum_t * b64_data,
				   gnutls_datum_t * result);

/* key_usage will be an OR of the following values:
 */
#define GNUTLS_KEY_DIGITAL_SIGNATURE            128	/* when the key is to be
							 * used for signing.
							 */
#define GNUTLS_KEY_NON_REPUDIATION              64
#define GNUTLS_KEY_KEY_ENCIPHERMENT             32	/* when the key is to be
							 * used for encryption.
							 */
#define GNUTLS_KEY_DATA_ENCIPHERMENT            16
#define GNUTLS_KEY_KEY_AGREEMENT                8
#define GNUTLS_KEY_KEY_CERT_SIGN                4
#define GNUTLS_KEY_CRL_SIGN                     2
#define GNUTLS_KEY_ENCIPHER_ONLY                1
#define GNUTLS_KEY_DECIPHER_ONLY                32768

typedef struct gnutls_params_st {
    gnutls_params_type_t type;
    union params {
	gnutls_dh_params_t dh;
	gnutls_rsa_params_t rsa_export;
    } params;
    int deinit;
} gnutls_params_st;

typedef int gnutls_params_function(gnutls_session_t, gnutls_params_type_t,
				   gnutls_params_st *);

void
gnutls_certificate_set_params_function(gnutls_certificate_credentials_t
				       res, gnutls_params_function * func);
void gnutls_anon_set_params_function(gnutls_certificate_credentials_t res,
				     gnutls_params_function * func);



# endif				/* LIBGNUTLS_VERSION */

#endif				/* GNUTLS_UI_H */