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/*
* Copyright (C) 2006-2008 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 "ike_reauth.h"
#include <daemon.h>
#include <sa/tasks/ike_delete.h>
typedef struct private_ike_reauth_t private_ike_reauth_t;
/**
* Private members of a ike_reauth_t task.
*/
struct private_ike_reauth_t {
/**
* Public methods and task_t interface.
*/
ike_reauth_t public;
/**
* Assigned IKE_SA.
*/
ike_sa_t *ike_sa;
/**
* reused ike_delete task
*/
ike_delete_t *ike_delete;
};
/**
* Implementation of task_t.build for initiator
*/
static status_t build_i(private_ike_reauth_t *this, message_t *message)
{
return this->ike_delete->task.build(&this->ike_delete->task, message);
}
/**
* Implementation of task_t.process for initiator
*/
static status_t process_i(private_ike_reauth_t *this, message_t *message)
{
ike_sa_t *new;
host_t *host;
iterator_t *iterator;
child_sa_t *child_sa;
peer_cfg_t *peer_cfg;
/* process delete response first */
this->ike_delete->task.process(&this->ike_delete->task, message);
peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa);
/* reauthenticate only if we have children */
iterator = this->ike_sa->create_child_sa_iterator(this->ike_sa);
if (iterator->get_count(iterator) == 0
#ifdef ME
/* we allow peers to reauth mediation connections (without children) */
&& !peer_cfg->is_mediation(peer_cfg)
#endif /* ME */
)
{
DBG1(DBG_IKE, "unable to reauthenticate IKE_SA, no CHILD_SA to recreate");
iterator->destroy(iterator);
return FAILED;
}
new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager, TRUE);
new->set_peer_cfg(new, peer_cfg);
host = this->ike_sa->get_other_host(this->ike_sa);
new->set_other_host(new, host->clone(host));
host = this->ike_sa->get_my_host(this->ike_sa);
new->set_my_host(new, host->clone(host));
/* if we already have a virtual IP, we reuse it */
host = this->ike_sa->get_virtual_ip(this->ike_sa, TRUE);
if (host)
{
new->set_virtual_ip(new, TRUE, host);
}
#ifdef ME
/* we initiate the new IKE_SA of the mediation connection without CHILD_SA */
if (peer_cfg->is_mediation(peer_cfg))
{
if (new->initiate(new, NULL, 0, NULL, NULL) == DESTROY_ME)
{
charon->ike_sa_manager->checkin_and_destroy(
charon->ike_sa_manager, new);
/* set threads active IKE_SA after checkin */
charon->bus->set_sa(charon->bus, this->ike_sa);
DBG1(DBG_IKE, "reauthenticating IKE_SA failed");
return FAILED;
}
}
#endif /* ME */
while (iterator->iterate(iterator, (void**)&child_sa))
{
switch (child_sa->get_state(child_sa))
{
case CHILD_ROUTED:
{
/* move routed child directly */
iterator->remove(iterator);
new->add_child_sa(new, child_sa);
break;
}
default:
{
/* initiate/queue all child SAs */
child_cfg_t *child_cfg = child_sa->get_config(child_sa);
child_cfg->get_ref(child_cfg);
if (new->initiate(new, child_cfg, 0, NULL, NULL) == DESTROY_ME)
{
iterator->destroy(iterator);
charon->ike_sa_manager->checkin_and_destroy(
charon->ike_sa_manager, new);
/* set threads active IKE_SA after checkin */
charon->bus->set_sa(charon->bus, this->ike_sa);
DBG1(DBG_IKE, "reauthenticating IKE_SA failed");
return FAILED;
}
break;
}
}
}
iterator->destroy(iterator);
charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
/* set threads active IKE_SA after checkin */
charon->bus->set_sa(charon->bus, this->ike_sa);
/* we always return failed to delete the obsolete IKE_SA */
return FAILED;
}
/**
* Implementation of task_t.get_type
*/
static task_type_t get_type(private_ike_reauth_t *this)
{
return IKE_REAUTH;
}
/**
* Implementation of task_t.migrate
*/
static void migrate(private_ike_reauth_t *this, ike_sa_t *ike_sa)
{
this->ike_delete->task.migrate(&this->ike_delete->task, ike_sa);
this->ike_sa = ike_sa;
}
/**
* Implementation of task_t.destroy
*/
static void destroy(private_ike_reauth_t *this)
{
this->ike_delete->task.destroy(&this->ike_delete->task);
free(this);
}
/*
* Described in header.
*/
ike_reauth_t *ike_reauth_create(ike_sa_t *ike_sa)
{
private_ike_reauth_t *this = malloc_thing(private_ike_reauth_t);
this->public.task.get_type = (task_type_t(*)(task_t*))get_type;
this->public.task.migrate = (void(*)(task_t*,ike_sa_t*))migrate;
this->public.task.destroy = (void(*)(task_t*))destroy;
this->public.task.build = (status_t(*)(task_t*,message_t*))build_i;
this->public.task.process = (status_t(*)(task_t*,message_t*))process_i;
this->ike_sa = ike_sa;
this->ike_delete = ike_delete_create(ike_sa, TRUE);
return &this->public;
}
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