136 lines
3.0 KiB
C
136 lines
3.0 KiB
C
/**
|
|
* @file packet.h
|
|
*
|
|
* @brief Interface of packet_t.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2005 Jan Hutter, Martin Willi
|
|
* Hochschule fuer Technik Rapperswil
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
|
|
*
|
|
* 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 General Public License
|
|
* for more details.
|
|
*/
|
|
|
|
#ifndef PACKET_H_
|
|
#define PACKET_H_
|
|
|
|
|
|
#include <types.h>
|
|
#include <network/host.h>
|
|
|
|
|
|
typedef struct packet_t packet_t;
|
|
|
|
/**
|
|
* @brief Abstraction of an UDP-Packet, contains data, sender and receiver.
|
|
*
|
|
* @b Constructors:
|
|
* - packet_create()
|
|
*
|
|
* @ingroup network
|
|
*/
|
|
struct packet_t {
|
|
|
|
/**
|
|
* @brief Set the source address.
|
|
*
|
|
* Set host_t is now owned by packet_t, it will destroy
|
|
* it if necessary.
|
|
*
|
|
* @param this calling object
|
|
* @param source address to set as source
|
|
*/
|
|
void (*set_source) (packet_t *packet, host_t *source);
|
|
|
|
/**
|
|
* @brief Set the destination address.
|
|
*
|
|
* Set host_t is now owned by packet_t, it will destroy
|
|
* it if necessary.
|
|
*
|
|
* @param this calling object
|
|
* @param source address to set as destination
|
|
*/
|
|
void (*set_destination) (packet_t *packet, host_t *destination);
|
|
|
|
/**
|
|
* @brief Get the source address.
|
|
*
|
|
* Set host_t is still owned by packet_t, clone it
|
|
* if needed.
|
|
*
|
|
* @param this calling object
|
|
* @return source address
|
|
*/
|
|
host_t *(*get_source) (packet_t *packet);
|
|
|
|
/**
|
|
* @brief Get the destination address.
|
|
*
|
|
* Set host_t is still owned by packet_t, clone it
|
|
* if needed.
|
|
*
|
|
* @param this calling object
|
|
* @return destination address
|
|
*/
|
|
host_t *(*get_destination) (packet_t *packet);
|
|
|
|
/**
|
|
* @brief Get the data from the packet.
|
|
*
|
|
* The data pointed by the chunk is still owned
|
|
* by the packet. Clone it if needed.
|
|
*
|
|
* @param this calling object
|
|
* @return chunk containing the data
|
|
*/
|
|
chunk_t (*get_data) (packet_t *packet);
|
|
|
|
/**
|
|
* @brief Set the data in the packet.
|
|
*
|
|
* Supplied chunk data is now owned by the
|
|
* packet. It will free it.
|
|
*
|
|
* @param this calling object
|
|
* @param data chunk with data to set
|
|
*/
|
|
void (*set_data) (packet_t *packet, chunk_t data);
|
|
|
|
/**
|
|
* @brief Clones a packet_t object.
|
|
*
|
|
* @param packet calling object
|
|
* @param clone pointer to a packet_t object pointer where the new object is stored
|
|
*/
|
|
packet_t* (*clone) (packet_t *packet);
|
|
|
|
/**
|
|
* @brief Destroy the packet, freeing contained data.
|
|
*
|
|
* @param packet packet to destroy
|
|
*/
|
|
void (*destroy) (packet_t *packet);
|
|
};
|
|
|
|
/**
|
|
* @brief create an empty packet
|
|
*
|
|
* @return packet_t object
|
|
*
|
|
* @ingroup network
|
|
*/
|
|
packet_t *packet_create();
|
|
|
|
|
|
#endif /*PACKET_H_*/
|