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/**
* @file packet.h
*
* @brief UDP-Packet, contains data, sender and receiver
*
*/
/*
* 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.
*/
#include "packet.h"
static status_t destroy(packet_t *this)
{
pfree(this->data.ptr);
pfree(this);
return SUCCESS;
}
/**
* @brief helper function to set address used by set_dest & set_source
*/
static status_t set_addr(int family, struct sockaddr *saddr, char *address, u_int16_t port)
{
switch (family)
{
/* IPv4 */
case AF_INET:
{
struct sockaddr_in *sin = (struct sockaddr_in*)saddr;
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = inet_addr("127.0.0.1");
sin->sin_port = htons(port);
return SUCCESS;;
}
}
return NOT_SUPPORTED;
}
status_t set_destination(packet_t *this, char *address, u_int16_t port)
{
struct sockaddr *saddr = &(this->destination);
return set_addr(this->family, saddr, address, port);
}
status_t set_source(packet_t *this, char *address, u_int16_t port)
{
struct sockaddr *saddr = &(this->source);
return set_addr(this->family, saddr, address, port);
}
packet_t *packet_create(int family)
{
packet_t *this = alloc_thing(packet_t, "packet_t");
this->destroy = destroy;
this->set_destination = set_destination;
this->set_source = set_source;
this->family = family;
switch (family)
{
case AF_INET:
this->sockaddr_len = sizeof(struct sockaddr_in);
break;
default: /* not supported */
pfree(this);
return NULL;
}
this->data.len = 0;
this->data.ptr = NULL;
return this;
}
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