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/**
* @file incoming_packet_job.h
*
* @brief Implementation of incoming_packet_job_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 "incoming_packet_job.h"
#include <daemon.h>
#include <queues/jobs/delete_half_open_ike_sa_job.h>
typedef struct private_incoming_packet_job_t private_incoming_packet_job_t;
/**
* Private data of an incoming_packet_job_t Object
*/
struct private_incoming_packet_job_t {
/**
* public incoming_packet_job_t interface
*/
incoming_packet_job_t public;
/**
* Assigned packet
*/
packet_t *packet;
/**
* logger
*/
logger_t *logger;
};
/**
* Implements job_t.get_type.
*/
static job_type_t get_type(private_incoming_packet_job_t *this)
{
return INCOMING_PACKET;
}
/**
* Implementation of job_t.execute.
*/
static status_t execute(private_incoming_packet_job_t *this)
{
message_t *message;
ike_sa_t *ike_sa;
ike_sa_id_t *ike_sa_id;
status_t status;
packet_t *packet;
message = message_create_from_packet(this->packet->clone(this->packet));
status = message->parse_header(message);
if (status != SUCCESS)
{
this->logger->log(this->logger, ERROR, "Message header could not be verified!");
message->destroy(message);
return DESTROY_ME;
}
this->logger->log(this->logger, CONTROL|LEVEL2, "Message is a %s %s",
mapping_find(exchange_type_m, message->get_exchange_type(message)),
message->get_request(message) ? "request" : "reply");
if ((message->get_major_version(message) != IKE_MAJOR_VERSION) ||
(message->get_minor_version(message) != IKE_MINOR_VERSION))
{
this->logger->log(this->logger, ERROR | LEVEL2,
"IKE version %d.%d not supported",
message->get_major_version(message),
message->get_minor_version(message));
if ((message->get_exchange_type(message) == IKE_SA_INIT) && (message->get_request(message)))
{
message_t *response;
message->get_ike_sa_id(message, &ike_sa_id);
ike_sa_id->switch_initiator(ike_sa_id);
response = message_create_notify_reply(message->get_destination(message),
message->get_source(message),
IKE_SA_INIT, FALSE, ike_sa_id,
INVALID_MAJOR_VERSION);
message->destroy(message);
ike_sa_id->destroy(ike_sa_id);
status = response->generate(response, NULL, NULL, &packet);
if (status != SUCCESS)
{
this->logger->log(this->logger, ERROR, "Could not generate packet from message");
response->destroy(response);
return DESTROY_ME;
}
this->logger->log(this->logger, ERROR, "Send notify reply of type INVALID_MAJOR_VERSION");
charon->send_queue->add(charon->send_queue, packet);
response->destroy(response);
return DESTROY_ME;
}
message->destroy(message);
return DESTROY_ME;
}
message->get_ike_sa_id(message, &ike_sa_id);
ike_sa_id->switch_initiator(ike_sa_id);
this->logger->log(this->logger, CONTROL|LEVEL3, "Checking out IKE SA %lld:%lld, role %s",
ike_sa_id->get_initiator_spi(ike_sa_id),
ike_sa_id->get_responder_spi(ike_sa_id),
ike_sa_id->is_initiator(ike_sa_id) ? "initiator" : "responder");
status = charon->ike_sa_manager->checkout(charon->ike_sa_manager, ike_sa_id, &ike_sa);
if ((status != SUCCESS) && (status != CREATED))
{
this->logger->log(this->logger, ERROR, "IKE SA could not be checked out");
ike_sa_id->destroy(ike_sa_id);
message->destroy(message);
/* TODO: send notify reply of type INVALID_IKE_SPI if SPI could not be found ? */
return DESTROY_ME;
}
if (status == CREATED)
{
job_t *delete_job;
this->logger->log(this->logger, CONTROL|LEVEL3,
"Create Job to delete half open IKE_SA.");
delete_job = (job_t *) delete_half_open_ike_sa_job_create(ike_sa_id);
charon->event_queue->add_relative(charon->event_queue, delete_job,
charon->configuration->get_half_open_ike_sa_timeout(charon->configuration));
}
status = ike_sa->process_message(ike_sa, message);
this->logger->log(this->logger, CONTROL|LEVEL3, "%s IKE SA %lld:%lld, role %s",
status == DESTROY_ME ? "Checkin and delete" : "Checkin",
ike_sa_id->get_initiator_spi(ike_sa_id),
ike_sa_id->get_responder_spi(ike_sa_id),
ike_sa_id->is_initiator(ike_sa_id) ? "initiator" : "responder");
ike_sa_id->destroy(ike_sa_id);
if (status == DESTROY_ME)
{
status = charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, ike_sa);
}
else
{
status = charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
}
if (status != SUCCESS)
{
this->logger->log(this->logger, ERROR, "Checkin of IKE SA failed!");
}
message->destroy(message);
return DESTROY_ME;
}
/**
* Implements incoming_packet_job_t.get_packet.
*/
static packet_t* get_packet(private_incoming_packet_job_t *this)
{
return this->packet;
}
/**
* Implements job_t.destroy.
*/
static void destroy(private_incoming_packet_job_t *this)
{
this->packet->destroy(this->packet);
free(this);
}
/*
* Described in header
*/
incoming_packet_job_t *incoming_packet_job_create(packet_t *packet)
{
private_incoming_packet_job_t *this = malloc_thing(private_incoming_packet_job_t);
/* interface functions */
this->public.job_interface.get_type = (job_type_t (*) (job_t *)) get_type;
this->public.job_interface.execute = (status_t (*) (job_t *)) execute;
this->public.job_interface.destroy = (void(*)(job_t*))destroy;
this->public.get_packet = (packet_t*(*)(incoming_packet_job_t*)) get_packet;
/* private variables */
this->packet = packet;
this->logger = logger_manager->get_logger(logger_manager, WORKER);
return &(this->public);
}
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