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/**
* @file message.c
*
* @brief Class message_t. Object of this type represents an IKEv2-Message.
*
*/
/*
* 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 <stdlib.h>
#include "allocator.h"
#include "types.h"
#include "message.h"
#include "linked_list.h"
#include "encodings.h"
/**
* Entry for a payload in the internal used linked list
*
*/
typedef struct payload_entry_s payload_entry_t;
struct payload_entry_s{
/**
* Type of payload
*/
payload_type_t payload_type;
/**
* Data struct holding the data of given payload
*/
void *data_struct;
};
/**
* Private data of an message_t object
*/
typedef struct private_message_s private_message_t;
struct private_message_s {
/**
* Public part of a message_t object
*/
message_t public;
/* Private values */
/**
* Assigned exchange type
*/
exchange_type_t exchange_type;
/**
* TRUE if message is from original initiator, FALSE otherwise.
*/
bool original_initiator;
/**
* TRUE if message is request.
* FALSE if message is reply.
*/
bool is_request;
/**
* Assigned UDP packet.
*
* Stores incoming packet or last generated one.
*/
packet_t *packet;
/**
* Linked List where payload data are stored in
*/
linked_list_t *payloads;
};
/**
* Implements message_t's set_exchange_type function.
* See #message_s.set_exchange_type.
*/
static status_t set_exchange_type (private_message_t *this,exchange_type_t exchange_type)
{
this->exchange_type = exchange_type;
return SUCCESS;
}
/**
* Implements message_t's get_exchange_type function.
* See #message_s.get_exchange_type.
*/
static exchange_type_t get_exchange_type (private_message_t *this)
{
return this->exchange_type;
}
/**
* Implements message_t's set_original_initiator function.
* See #message_s.set_original_initiator.
*/
static status_t set_original_initiator (private_message_t *this,bool original_initiator)
{
this->original_initiator = original_initiator;
return SUCCESS;
}
/**
* Implements message_t's get_original_initiator function.
* See #message_s.get_original_initiator.
*/
static exchange_type_t get_original_initiator (private_message_t *this)
{
return this->original_initiator;
}
/**
* Implements message_t's set_request function.
* See #message_s.set_request.
*/
static status_t set_request (private_message_t *this,bool request)
{
this->is_request = request;
return SUCCESS;
}
/**
* Implements message_t's get_request function.
* See #message_s.get_request.
*/
static exchange_type_t get_request (private_message_t *this)
{
return this->is_request;
}
/**
* Implements message_t's generate_packet function.
* See #message_s.generate_packet.
*/
static status_t generate_packet (private_message_t *this, packet_t **packet)
{
if (this->exchange_type == NOT_SET)
{
return EXCHANGE_TYPE_NOT_SET;
}
return SUCCESS;
}
/**
* Implements message_t's destroy function.
* See #message_s.destroy.
*/
static status_t destroy (private_message_t *this)
{
if (this->packet != NULL)
{
this->packet->destroy(this->packet);
}
this->payloads->destroy(this->payloads);
allocator_free(this);
return SUCCESS;
}
/*
* Described in Header-File
*/
message_t *message_create_from_packet(packet_t *packet)
{
private_message_t *this = allocator_alloc_thing(private_message_t);
if (this == NULL)
{
return NULL;
}
/* public functions */
this->public.set_exchange_type = (status_t(*)(message_t*, exchange_type_t))set_exchange_type;
this->public.get_exchange_type = (exchange_type_t(*)(message_t*))get_exchange_type;
this->public.set_original_initiator = (status_t(*)(message_t*, bool))set_original_initiator;
this->public.get_original_initiator = (bool(*)(message_t*))get_original_initiator;
this->public.set_request = (status_t(*)(message_t*, bool))set_request;
this->public.get_request = (bool(*)(message_t*))get_request;
this->public.generate_packet = (status_t (*) (message_t *, packet_t **)) generate_packet;
this->public.destroy = (status_t(*)(message_t*))destroy;
/* public values */
this->exchange_type = NOT_SET;
this->original_initiator = TRUE;
this->is_request = TRUE;
/* private values */
this->packet = packet;
this->payloads = linked_list_create();
if (this->payloads == NULL)
{
allocator_free(this);
return NULL;
}
return (&this->public);
}
/*
* Described in Header-File
*/
message_t *message_create()
{
return message_create_from_packet(NULL);
}
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