/*
 * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of Hyra nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef LIBOSTP_SESSION_H_
#define LIBOSTP_SESSION_H_

#include <stdint.h>

#define LIBOSTP_DEBUG 1

struct ostp_session {
    unsigned char *session_key;
    int sockfd;
};

/*
 * Create a new ostp ostp_session.
 *
 * @host: IPv4 address of OST host.
 * @res: Output for new ostp_session structure.
 */
int session_new(const char *host, struct ostp_session *res);

/*
 * Close an existing/running ostp_session.
 *
 * @ostp_session: Session to close.
 */
int session_close(struct ostp_session *session);

/*
 * Encrypt and send data to server.
 *
 * @data: Data to send.
 * @len: Length of data.
 * @ostp_session: Running ostp_session.
 */
int session_send(void *data, uint16_t len, const struct ostp_session *session);

/*
 * Receive data from the server.
 *
 * @buf: Buffer for received data.
 * @len: Length of buffer.
 * @ostp_session: Running ostp_session.
 */
int session_recv(void *buf, uint16_t len, const struct ostp_session *session);

#endif      /* LIBOSTP_SESSION_H_ */