Moving charon to libcharon.
This commit is contained in:
Tobias Brunner
@@ -0,0 +1,455 @@
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/*
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* Copyright (C) 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 "controller.h"
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#include <sys/types.h>
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#include <dirent.h>
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#include <sys/stat.h>
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#include <dlfcn.h>
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#include <daemon.h>
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#include <library.h>
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typedef struct private_controller_t private_controller_t;
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typedef struct interface_listener_t interface_listener_t;
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/**
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* Private data of an stroke_t object.
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*/
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struct private_controller_t {
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/**
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* Public part of stroke_t object.
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*/
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controller_t public;
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};
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/**
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* helper struct to map listener callbacks to interface callbacks
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*/
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struct interface_listener_t {
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/**
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* public bus listener interface
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*/
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listener_t public;
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/**
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* status of the operation, return to method callers
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*/
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status_t status;
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/**
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* interface callback (listener gets redirected to here)
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*/
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controller_cb_t callback;
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/**
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* user parameter to pass to callback
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*/
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void *param;
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/**
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* child configuration, used for initiate
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*/
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child_cfg_t *child_cfg;
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/**
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* peer configuration, used for initiate
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*/
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peer_cfg_t *peer_cfg;
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/**
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* IKE_SA to handle
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*/
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ike_sa_t *ike_sa;
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/**
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* CHILD_SA to handle
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*/
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child_sa_t *child_sa;
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/**
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* unique ID, used for various methods
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*/
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u_int32_t id;
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};
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typedef struct interface_job_t interface_job_t;
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/**
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* job for asynchronous listen operations
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*/
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struct interface_job_t {
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/**
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* job interface
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*/
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job_t public;
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/**
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* associated listener
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*/
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interface_listener_t listener;
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};
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/**
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* listener log function
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*/
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static bool listener_log(interface_listener_t *this, debug_t group,
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level_t level, int thread, ike_sa_t *ike_sa,
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char* format, va_list args)
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{
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if (this->ike_sa == ike_sa)
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{
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if (!this->callback(this->param, group, level, ike_sa, format, args))
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{
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return FALSE;
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}
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}
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return TRUE;
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}
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/**
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* Implementation of listener_t.ike_state_change
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*/
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static bool listener_ike_state(interface_listener_t *this, ike_sa_t *ike_sa,
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ike_sa_state_t state)
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{
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if (this->ike_sa == ike_sa)
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{
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switch (state)
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{
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#ifdef ME
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case IKE_ESTABLISHED:
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{ /* mediation connections are complete without CHILD_SA */
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peer_cfg_t *peer_cfg = ike_sa->get_peer_cfg(ike_sa);
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if (peer_cfg->is_mediation(peer_cfg))
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{
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this->status = SUCCESS;
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return FALSE;
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}
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break;
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}
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#endif /* ME */
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case IKE_DESTROYING:
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if (ike_sa->get_state(ike_sa) == IKE_DELETING)
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{ /* proper termination */
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this->status = SUCCESS;
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}
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return FALSE;
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default:
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break;
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}
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}
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return TRUE;
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}
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/**
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* Implementation of listener_t.child_state_change
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*/
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static bool listener_child_state(interface_listener_t *this, ike_sa_t *ike_sa,
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child_sa_t *child_sa, child_sa_state_t state)
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{
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if (this->ike_sa == ike_sa)
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{
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switch (state)
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{
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case CHILD_INSTALLED:
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this->status = SUCCESS;
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return FALSE;
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case CHILD_DESTROYING:
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switch (child_sa->get_state(child_sa))
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{
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case CHILD_DELETING:
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/* proper delete */
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this->status = SUCCESS;
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break;
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default:
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break;
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}
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return FALSE;
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default:
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break;
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}
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}
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return TRUE;
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}
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/**
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* cleanup job if job is never executed
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*/
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static void recheckin(interface_job_t *job)
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{
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if (job->listener.ike_sa)
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{
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charon->ike_sa_manager->checkin(charon->ike_sa_manager,
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job->listener.ike_sa);
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}
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}
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/**
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* Implementation of controller_t.create_ike_sa_iterator.
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*/
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static enumerator_t* create_ike_sa_enumerator(controller_t *this)
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{
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return charon->ike_sa_manager->create_enumerator(charon->ike_sa_manager);
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}
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/**
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* execute function for initiate
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*/
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static status_t initiate_execute(interface_job_t *job)
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{
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ike_sa_t *ike_sa;
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interface_listener_t *listener = &job->listener;
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peer_cfg_t *peer_cfg = listener->peer_cfg;
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ike_sa = charon->ike_sa_manager->checkout_by_config(charon->ike_sa_manager,
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peer_cfg);
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listener->ike_sa = ike_sa;
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if (ike_sa->get_peer_cfg(ike_sa) == NULL)
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{
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ike_sa->set_peer_cfg(ike_sa, peer_cfg);
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}
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peer_cfg->destroy(peer_cfg);
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if (ike_sa->initiate(ike_sa, listener->child_cfg, 0, NULL, NULL) == SUCCESS)
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{
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charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
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return SUCCESS;
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}
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charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, ike_sa);
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return FAILED;
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}
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/**
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* Implementation of controller_t.initiate.
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*/
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static status_t initiate(private_controller_t *this,
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peer_cfg_t *peer_cfg, child_cfg_t *child_cfg,
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controller_cb_t callback, void *param)
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{
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interface_job_t job = {
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.listener = {
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.public = {
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.log = (void*)listener_log,
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.ike_state_change = (void*)listener_ike_state,
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.child_state_change = (void*)listener_child_state,
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},
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.callback = callback,
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.param = param,
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.status = FAILED,
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.child_cfg = child_cfg,
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.peer_cfg = peer_cfg,
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},
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.public = {
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.execute = (void*)initiate_execute,
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.destroy = (void*)recheckin,
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},
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};
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if (callback == NULL)
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{
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return initiate_execute(&job);
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}
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charon->bus->listen(charon->bus, &job.listener.public, (job_t*)&job);
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return job.listener.status;
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}
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/**
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* execute function for terminate_ike
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*/
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static status_t terminate_ike_execute(interface_job_t *job)
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{
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interface_listener_t *listener = &job->listener;
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ike_sa_t *ike_sa = listener->ike_sa;
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charon->bus->set_sa(charon->bus, ike_sa);
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if (ike_sa->delete(ike_sa) != DESTROY_ME)
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{
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charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
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/* delete failed */
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return FAILED;
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}
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charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, ike_sa);
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return SUCCESS;
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}
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/**
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* Implementation of controller_t.terminate_ike.
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*/
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static status_t terminate_ike(controller_t *this, u_int32_t unique_id,
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controller_cb_t callback, void *param)
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{
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ike_sa_t *ike_sa;
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interface_job_t job = {
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.listener = {
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.public = {
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.log = (void*)listener_log,
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.ike_state_change = (void*)listener_ike_state,
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.child_state_change = (void*)listener_child_state,
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},
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.callback = callback,
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.param = param,
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.status = FAILED,
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.id = unique_id,
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},
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.public = {
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.execute = (void*)terminate_ike_execute,
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.destroy = (void*)recheckin,
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},
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};
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ike_sa = charon->ike_sa_manager->checkout_by_id(charon->ike_sa_manager,
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unique_id, FALSE);
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if (ike_sa == NULL)
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{
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DBG1(DBG_IKE, "unable to terminate IKE_SA: ID %d not found", unique_id);
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return NOT_FOUND;
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}
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job.listener.ike_sa = ike_sa;
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if (callback == NULL)
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{
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return terminate_ike_execute(&job);
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}
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charon->bus->listen(charon->bus, &job.listener.public, (job_t*)&job);
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return job.listener.status;
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}
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/**
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* execute function for terminate_child
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*/
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static status_t terminate_child_execute(interface_job_t *job)
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{
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interface_listener_t *listener = &job->listener;
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ike_sa_t *ike_sa = listener->ike_sa;
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child_sa_t *child_sa = listener->child_sa;
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charon->bus->set_sa(charon->bus, ike_sa);
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if (ike_sa->delete_child_sa(ike_sa, child_sa->get_protocol(child_sa),
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child_sa->get_spi(child_sa, TRUE)) != DESTROY_ME)
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{
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charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
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return SUCCESS;
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}
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charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, ike_sa);
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return FAILED;
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}
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/**
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* Implementation of controller_t.terminate_child.
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*/
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static status_t terminate_child(controller_t *this, u_int32_t reqid,
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controller_cb_t callback, void *param)
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{
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ike_sa_t *ike_sa;
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child_sa_t *child_sa;
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iterator_t *iterator;
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interface_job_t job = {
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.listener = {
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.public = {
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.log = (void*)listener_log,
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.ike_state_change = (void*)listener_ike_state,
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.child_state_change = (void*)listener_child_state,
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},
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.callback = callback,
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.param = param,
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.status = FAILED,
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.id = reqid,
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},
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.public = {
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.execute = (void*)terminate_child_execute,
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.destroy = (void*)recheckin,
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},
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};
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ike_sa = charon->ike_sa_manager->checkout_by_id(charon->ike_sa_manager,
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reqid, TRUE);
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if (ike_sa == NULL)
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{
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DBG1(DBG_IKE, "unable to terminate, CHILD_SA with ID %d not found",
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reqid);
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return NOT_FOUND;
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}
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job.listener.ike_sa = ike_sa;
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iterator = ike_sa->create_child_sa_iterator(ike_sa);
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while (iterator->iterate(iterator, (void**)&child_sa))
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{
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if (child_sa->get_state(child_sa) != CHILD_ROUTED &&
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child_sa->get_reqid(child_sa) == reqid)
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{
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break;
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}
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child_sa = NULL;
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}
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iterator->destroy(iterator);
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if (child_sa == NULL)
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{
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DBG1(DBG_IKE, "unable to terminate, established "
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"CHILD_SA with ID %d not found", reqid);
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charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
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return NOT_FOUND;
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}
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job.listener.child_sa = child_sa;
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if (callback == NULL)
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{
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return terminate_child_execute(&job);
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}
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charon->bus->listen(charon->bus, &job.listener.public, (job_t*)&job);
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return job.listener.status;
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}
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/**
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* See header
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*/
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bool controller_cb_empty(void *param, debug_t group, level_t level,
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ike_sa_t *ike_sa, char *format, va_list args)
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{
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return TRUE;
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}
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/**
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* Implementation of stroke_t.destroy.
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*/
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static void destroy(private_controller_t *this)
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{
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free(this);
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}
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/*
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* Described in header-file
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*/
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controller_t *controller_create(void)
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{
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private_controller_t *this = malloc_thing(private_controller_t);
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this->public.create_ike_sa_enumerator = (enumerator_t*(*)(controller_t*))create_ike_sa_enumerator;
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this->public.initiate = (status_t(*)(controller_t*,peer_cfg_t*,child_cfg_t*,controller_cb_t,void*))initiate;
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this->public.terminate_ike = (status_t(*)(controller_t*,u_int32_t,controller_cb_t, void*))terminate_ike;
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this->public.terminate_child = (status_t(*)(controller_t*,u_int32_t,controller_cb_t, void *param))terminate_child;
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this->public.destroy = (void (*)(controller_t*))destroy;
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return &this->public;
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}
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