diff options
Diffstat (limited to 'src/charon/sa/tasks/ike_reauth.c')
| -rw-r--r-- | src/charon/sa/tasks/ike_reauth.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/charon/sa/tasks/ike_reauth.c b/src/charon/sa/tasks/ike_reauth.c new file mode 100644 index 000000000..0e98382a8 --- /dev/null +++ b/src/charon/sa/tasks/ike_reauth.c @@ -0,0 +1,175 @@ +/** + * @file ike_reauth.c + * + * @brief Implementation of the ike_reauth task. + * + */ + +/* + * Copyright (C) 2006-2007 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; + + /* process delete response first */ + this->ike_delete->task.process(&this->ike_delete->task, message); + + /* reestablish only if we have children */ + iterator = this->ike_sa->create_child_sa_iterator(this->ike_sa); + if (iterator->get_count(iterator) == 0) + { + DBG1(DBG_IKE, "unable to reestablish 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, this->ike_sa->get_peer_cfg(this->ike_sa)); + 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); + } + + 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) == DESTROY_ME) + { + iterator->destroy(iterator); + charon->ike_sa_manager->checkin_and_destroy( + charon->ike_sa_manager, new); + DBG1(DBG_IKE, "reestablishing IKE_SA failed"); + return FAILED; + } + break; + } + } + } + iterator->destroy(iterator); + charon->ike_sa_manager->checkin(charon->ike_sa_manager, new); + + /* 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; +} + |