176 lines
4.3 KiB
C
176 lines
4.3 KiB
C
/**
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* @file ike_reauth.c
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*
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* @brief Implementation of the ike_reauth task.
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*
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*/
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/*
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* Copyright (C) 2006-2007 Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "ike_reauth.h"
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#include <daemon.h>
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#include <sa/tasks/ike_delete.h>
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typedef struct private_ike_reauth_t private_ike_reauth_t;
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/**
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* Private members of a ike_reauth_t task.
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*/
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struct private_ike_reauth_t {
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/**
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* Public methods and task_t interface.
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*/
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ike_reauth_t public;
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/**
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* Assigned IKE_SA.
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*/
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ike_sa_t *ike_sa;
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/**
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* reused ike_delete task
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*/
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ike_delete_t *ike_delete;
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};
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/**
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* Implementation of task_t.build for initiator
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*/
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static status_t build_i(private_ike_reauth_t *this, message_t *message)
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{
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return this->ike_delete->task.build(&this->ike_delete->task, message);
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}
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/**
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* Implementation of task_t.process for initiator
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*/
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static status_t process_i(private_ike_reauth_t *this, message_t *message)
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{
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ike_sa_t *new;
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host_t *host;
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iterator_t *iterator;
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child_sa_t *child_sa;
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/* process delete response first */
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this->ike_delete->task.process(&this->ike_delete->task, message);
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/* reestablish only if we have children */
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iterator = this->ike_sa->create_child_sa_iterator(this->ike_sa);
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if (iterator->get_count(iterator) == 0)
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{
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DBG1(DBG_IKE, "unable to reestablish IKE_SA, no CHILD_SA to recreate");
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iterator->destroy(iterator);
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return FAILED;
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}
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new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager, TRUE);
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new->set_peer_cfg(new, this->ike_sa->get_peer_cfg(this->ike_sa));
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host = this->ike_sa->get_other_host(this->ike_sa);
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new->set_other_host(new, host->clone(host));
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host = this->ike_sa->get_my_host(this->ike_sa);
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new->set_my_host(new, host->clone(host));
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/* if we already have a virtual IP, we reuse it */
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host = this->ike_sa->get_virtual_ip(this->ike_sa, TRUE);
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if (host)
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{
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new->set_virtual_ip(new, TRUE, host);
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}
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while (iterator->iterate(iterator, (void**)&child_sa))
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{
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switch (child_sa->get_state(child_sa))
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{
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case CHILD_ROUTED:
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{
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/* move routed child directly */
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iterator->remove(iterator);
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new->add_child_sa(new, child_sa);
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break;
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}
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default:
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{
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/* initiate/queue all child SAs */
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child_cfg_t *child_cfg = child_sa->get_config(child_sa);
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child_cfg->get_ref(child_cfg);
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if (new->initiate(new, child_cfg) == DESTROY_ME)
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{
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iterator->destroy(iterator);
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charon->ike_sa_manager->checkin_and_destroy(
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charon->ike_sa_manager, new);
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DBG1(DBG_IKE, "reestablishing IKE_SA failed");
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return FAILED;
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}
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break;
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}
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}
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}
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iterator->destroy(iterator);
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charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
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/* we always return failed to delete the obsolete IKE_SA */
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return FAILED;
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}
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/**
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* Implementation of task_t.get_type
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*/
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static task_type_t get_type(private_ike_reauth_t *this)
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{
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return IKE_REAUTH;
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}
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/**
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* Implementation of task_t.migrate
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*/
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static void migrate(private_ike_reauth_t *this, ike_sa_t *ike_sa)
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{
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this->ike_delete->task.migrate(&this->ike_delete->task, ike_sa);
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this->ike_sa = ike_sa;
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}
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/**
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* Implementation of task_t.destroy
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*/
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static void destroy(private_ike_reauth_t *this)
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{
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this->ike_delete->task.destroy(&this->ike_delete->task);
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free(this);
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}
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/*
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* Described in header.
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*/
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ike_reauth_t *ike_reauth_create(ike_sa_t *ike_sa)
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{
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private_ike_reauth_t *this = malloc_thing(private_ike_reauth_t);
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this->public.task.get_type = (task_type_t(*)(task_t*))get_type;
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this->public.task.migrate = (void(*)(task_t*,ike_sa_t*))migrate;
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this->public.task.destroy = (void(*)(task_t*))destroy;
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this->public.task.build = (status_t(*)(task_t*,message_t*))build_i;
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this->public.task.process = (status_t(*)(task_t*,message_t*))process_i;
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this->ike_sa = ike_sa;
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this->ike_delete = ike_delete_create(ike_sa, TRUE);
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return &this->public;
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}
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