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/*
* Usurpation – network logic
*
* Copyright (C) 2019 Gediminas Jakutis
* Copyright (C) 2019 Paulius Ratkevičius
*
* This program 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; version 2.1
* of the License.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef USURPATION_NET_H_INCLUDED
#define USURPATION_NET_H_INCLUDED
#include <sys/socket.h>
#include <netinet/in.h>
#include <stddef.h>
/**
* Initialises a listening socket and returns the associated network descriptor.
*/
int net_init(const unsigned short int port);
/**
* Closes connection associated with network descriptor.
*/
int net_close(int nd);
/**
* Get last data received from connection associated with network descriptor.
* If the pointer pointed by data is NULL, a buffer is allocated by the function
* and needs to be free()'d later. Otherwise, the supplied buffer is reused.
* Returns the amount of data acually fetched through recvsize pointer.
*/
int net_getlastdata(int nd, char ** const data, size_t *recvsize);
int net_send(int nd, const char * const buf, size_t buf_size);
int net_send_addr(int nd, const char * const buf, size_t buf_size, const struct sockaddr_in * const addr);
void net_flush_read_buffer(int nd);
#endif /* USURPATION_NET_H_INCLUDED */
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