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/**
* @file packet.c
*
* @brief Implementation of packet_t.
*
*/
/*
* Copyright (C) 2005-2006 Martin Willi
* Copyright (C) 2005 Jan Hutter
* 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"
typedef struct private_packet_t private_packet_t;
/**
* Private data of an packet_t object.
*/
struct private_packet_t {
/**
* Public part of a packet_t object.
*/
packet_t public;
/**
* source address
*/
host_t *source;
/**
* destination address
*/
host_t *destination;
/**
* message data
*/
chunk_t data;
};
/**
* Implements packet_t.get_source
*/
static void set_source(private_packet_t *this, host_t *source)
{
DESTROY_IF(this->source);
this->source = source;
}
/**
* Implements packet_t.set_destination
*/
static void set_destination(private_packet_t *this, host_t *destination)
{
DESTROY_IF(this->destination);
this->destination = destination;
}
/**
* Implements packet_t.get_source
*/
static host_t *get_source(private_packet_t *this)
{
return this->source;
}
/**
* Implements packet_t.get_destination
*/
static host_t *get_destination(private_packet_t *this)
{
return this->destination;
}
/**
* Implements packet_t.get_data
*/
static chunk_t get_data(private_packet_t *this)
{
return this->data;
}
/**
* Implements packet_t.set_data
*/
static void set_data(private_packet_t *this, chunk_t data)
{
free(this->data.ptr);
this->data = data;
}
/**
* Implements packet_t.destroy.
*/
static void destroy(private_packet_t *this)
{
if (this->source != NULL)
{
this->source->destroy(this->source);
}
if (this->destination != NULL)
{
this->destination->destroy(this->destination);
}
free(this->data.ptr);
free(this);
}
/**
* Implements packet_t.clone.
*/
static packet_t *clone_(private_packet_t *this)
{
private_packet_t *other = (private_packet_t*)packet_create();
if (this->destination != NULL)
{
other->destination = this->destination->clone(this->destination);
}
if (this->source != NULL)
{
other->source = this->source->clone(this->source);
}
if (this->data.ptr != NULL)
{
other->data.ptr = clalloc(this->data.ptr,this->data.len);
other->data.len = this->data.len;
}
return &(other->public);
}
/*
* Documented in header
*/
packet_t *packet_create(void)
{
private_packet_t *this = malloc_thing(private_packet_t);
this->public.set_data = (void(*) (packet_t *,chunk_t)) set_data;
this->public.get_data = (chunk_t(*) (packet_t *)) get_data;
this->public.set_source = (void(*) (packet_t *,host_t*)) set_source;
this->public.get_source = (host_t*(*) (packet_t *)) get_source;
this->public.set_destination = (void(*) (packet_t *,host_t*)) set_destination;
this->public.get_destination = (host_t*(*) (packet_t *)) get_destination;
this->public.clone = (packet_t*(*) (packet_t *))clone_;
this->public.destroy = (void(*) (packet_t *)) destroy;
this->destination = NULL;
this->source = NULL;
this->data = chunk_empty;
return &(this->public);
}
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