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/*
 * userpref.h
 * contains methods to access user specific certificates IDs and more.
 *
 * Copyright (c) 2008 Jonathan Beck All Rights Reserved.
 *
 * This 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA 
 */

#ifndef USERPREF_H
#define USERPREF_H

#include <gnutls/gnutls.h>
/**
 * Method to get user's HostID. Caller must free returned buffer.
 * 
 * @return the HostID if exist in config file. Returns NULL otherwise.
 */
char *get_host_id();

/**
 * Determine if we already paired this device.
 * 
 * @return 1 if device is already paired. Returns 0 otherwise.
 */
int is_device_known(char *uid);

/**
 * @return 1 if everything went well. Returns 0 otherwise.
 */
int store_device_public_key(char *uid, gnutls_datum_t public_key);

/**
 * @return 1 if everything went well. Returns 0 otherwise.
 */
int get_root_private_key(gnutls_datum_t * root_privkey);

/**
 * @return 1 if everything went well. Returns 0 otherwise.
 */
int get_host_private_key(gnutls_datum_t * host_privkey);

/**
 * @return 1 if everything went well. Returns 0 otherwise.
 */
int get_root_certificate(gnutls_datum_t * root_cert);

/**
 * @return 1 if everything went well. Returns 0 otherwise.
 */
int get_host_certificate(gnutls_datum_t * host_cert);

/**
 * Setup a brand new config file.
 * @return 1 if everything went well. Returns 0 otherwise.
 */
int init_config_file(char *host_id, gnutls_datum_t * root_key, gnutls_datum_t * host_key, gnutls_datum_t * root_cert,
					 gnutls_datum_t * host_cert);
#endif