115 lines
2.4 KiB
C
115 lines
2.4 KiB
C
/**
|
|
* @file packet.c
|
|
*
|
|
* @brief Implementation 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.
|
|
*/
|
|
|
|
|
|
#include "packet.h"
|
|
|
|
#include <utils/allocator.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;
|
|
};
|
|
|
|
/**
|
|
* Implements packet_t.destroy.
|
|
*/
|
|
static void destroy(private_packet_t *this)
|
|
{
|
|
if (this->public.source != NULL)
|
|
{
|
|
this->public.source->destroy(this->public.source);
|
|
}
|
|
if (this->public.destination != NULL)
|
|
{
|
|
this->public.destination->destroy(this->public.destination);
|
|
}
|
|
allocator_free(this->public.data.ptr);
|
|
allocator_free(this);
|
|
}
|
|
|
|
/**
|
|
* Implements packet_t.clone.
|
|
*/
|
|
static packet_t *clone (private_packet_t *this)
|
|
{
|
|
packet_t *other;
|
|
other = packet_create();
|
|
|
|
if (this->public.destination != NULL)
|
|
{
|
|
other->destination = this->public.destination->clone(this->public.destination);
|
|
}
|
|
else
|
|
{
|
|
other->destination = NULL;
|
|
}
|
|
|
|
if (this->public.source != NULL)
|
|
{
|
|
other->source = this->public.source->clone(this->public.source);
|
|
}
|
|
else
|
|
{
|
|
other->source = NULL;
|
|
}
|
|
|
|
/* only clone existing chunks :-) */
|
|
if (this->public.data.ptr != NULL)
|
|
{
|
|
other->data.ptr = allocator_clone_bytes(this->public.data.ptr,this->public.data.len);
|
|
other->data.len = this->public.data.len;
|
|
}
|
|
else
|
|
{
|
|
other->data = CHUNK_INITIALIZER;
|
|
}
|
|
return other;
|
|
}
|
|
|
|
|
|
/*
|
|
* Documented in header
|
|
*/
|
|
packet_t *packet_create()
|
|
{
|
|
private_packet_t *this = allocator_alloc_thing(private_packet_t);
|
|
|
|
this->public.destroy = (void(*) (packet_t *)) destroy;
|
|
this->public.clone = (packet_t*(*) (packet_t *))clone;
|
|
|
|
this->public.destination = NULL;
|
|
this->public.source = NULL;
|
|
this->public.data = CHUNK_INITIALIZER;
|
|
|
|
return &(this->public);
|
|
}
|