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/*
* Copyright (C) 2012 Tobias Brunner
* 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;
/**
* DSCP value on packet
*/
u_int8_t dscp;
/**
* message data
*/
chunk_t data;
/**
* actual chunk returned from get_data, adjusted when skip_bytes is called
*/
chunk_t adjusted_data;
};
METHOD(packet_t, set_source, void,
private_packet_t *this, host_t *source)
{
DESTROY_IF(this->source);
this->source = source;
}
METHOD(packet_t, set_destination, void,
private_packet_t *this, host_t *destination)
{
DESTROY_IF(this->destination);
this->destination = destination;
}
METHOD(packet_t, get_source, host_t*,
private_packet_t *this)
{
return this->source;
}
METHOD(packet_t, get_destination, host_t*,
private_packet_t *this)
{
return this->destination;
}
METHOD(packet_t, get_data, chunk_t,
private_packet_t *this)
{
return this->adjusted_data;
}
METHOD(packet_t, set_data, void,
private_packet_t *this, chunk_t data)
{
free(this->data.ptr);
this->adjusted_data = this->data = data;
}
METHOD(packet_t, get_dscp, u_int8_t,
private_packet_t *this)
{
return this->dscp;
}
METHOD(packet_t, set_dscp, void,
private_packet_t *this, u_int8_t value)
{
this->dscp = value;
}
METHOD(packet_t, skip_bytes, void,
private_packet_t *this, size_t bytes)
{
this->adjusted_data = chunk_skip(this->adjusted_data, bytes);
}
METHOD(packet_t, destroy, void,
private_packet_t *this)
{
DESTROY_IF(this->source);
DESTROY_IF(this->destination);
free(this->data.ptr);
free(this);
}
METHOD(packet_t, clone_, packet_t*,
private_packet_t *this)
{
packet_t *other;
other = packet_create();
if (this->destination)
{
other->set_destination(other,
this->destination->clone(this->destination));
}
if (this->source)
{
other->set_source(other, this->source->clone(this->source));
}
if (this->data.ptr)
{
other->set_data(other, chunk_clone(this->adjusted_data));
}
other->set_dscp(other, this->dscp);
return other;
}
/**
* Described in header.
*/
packet_t *packet_create_from_data(host_t *src, host_t *dst, chunk_t data)
{
private_packet_t *this;
INIT(this,
.public = {
.set_data = _set_data,
.get_data = _get_data,
.set_source = _set_source,
.get_source = _get_source,
.set_destination = _set_destination,
.get_destination = _get_destination,
.get_dscp = _get_dscp,
.set_dscp = _set_dscp,
.skip_bytes = _skip_bytes,
.clone = _clone_,
.destroy = _destroy,
},
.source = src,
.destination = dst,
.adjusted_data = data,
.data = data,
);
return &this->public;
}
/*
* Described in header.
*/
packet_t *packet_create()
{
return packet_create_from_data(NULL, NULL, chunk_empty);
}
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