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116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
/**
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* @file packet.h
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*
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* @brief UDP-Packet, contains data, sender and receiver.
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*
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*/
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/*
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#ifndef PACKET_H_
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#define PACKET_H_
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#include "types.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stdlib.h>
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/**
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* @brief UDP-Packet, contains data, sender and receiver
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*/
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typedef struct packet_s packet_t;
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struct packet_s {
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/**
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* Address family, such as AF_INET
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*/
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int family;
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/**
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*
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*/
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size_t sockaddr_len;
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/**
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* source address structure
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*/
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struct sockaddr source;
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/**
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* destination address structure
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*/
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struct sockaddr destination;
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/**
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* message data
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*/
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chunk_t data;
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/**
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* @brief set destination of packet, using address string
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*
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* @param packet calling object
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* @param address ip address string
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* @param port port number
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* @return - SUCCESS
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* - NOT_SUPPORTED
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*/
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status_t (*set_destination) (packet_t *packet, char *address, u_int16_t port);
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/**
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* @brief set destination of packet, using address string
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*
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* @param packet calling object
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* @param address ip address string
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* @param port port number
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* @return - SUCCESS
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* - NOT_SUPPORTED
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*/
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status_t (*set_source) (packet_t *packet, char *address, u_int16_t port);
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/**
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* @brief Clones a packet_t object
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*
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* @param packet calling object
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* @param clone pointer to a packet_t object pointer where the new object is stored
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* @return - SUCCESS if successful
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* - OUT_OF_RES
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*/
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status_t (*clone) (packet_t *packet, packet_t **clone);
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/**
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* @brief destroy the packet, freeing contained data
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*
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* @param packet packet to destroy
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* @return - SUCCESS
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*/
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status_t (*destroy) (packet_t *packet);
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};
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/**
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* @brief create an empty packet
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*
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* @param family address-family, such as AF_INET
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* @return - NULL when family not supported
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*/
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packet_t *packet_create(int family);
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#endif /*PACKET_H_*/
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