162 lines
3.5 KiB
C
162 lines
3.5 KiB
C
/*
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* Copyright (C) 2008 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 "eap_manager.h"
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#include <utils/linked_list.h>
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#include <threading/rwlock.h>
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typedef struct private_eap_manager_t private_eap_manager_t;
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typedef struct eap_entry_t eap_entry_t;
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/**
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* EAP constructor entry
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*/
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struct eap_entry_t {
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/**
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* EAP method type, vendor specific if vendor is set
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*/
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eap_type_t type;
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/**
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* vendor ID, 0 for default EAP methods
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*/
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u_int32_t vendor;
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/**
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* Role of the method returned by the constructor, EAP_SERVER or EAP_PEER
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*/
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eap_role_t role;
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/**
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* constructor function to create instance
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*/
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eap_constructor_t constructor;
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};
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/**
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* private data of eap_manager
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*/
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struct private_eap_manager_t {
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/**
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* public functions
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*/
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eap_manager_t public;
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/**
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* list of eap_entry_t's
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*/
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linked_list_t *methods;
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/**
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* rwlock to lock methods
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*/
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rwlock_t *lock;
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};
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METHOD(eap_manager_t, add_method, void,
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private_eap_manager_t *this, eap_type_t type, u_int32_t vendor,
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eap_role_t role, eap_constructor_t constructor)
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{
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eap_entry_t *entry = malloc_thing(eap_entry_t);
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entry->type = type;
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entry->vendor = vendor;
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entry->role = role;
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entry->constructor = constructor;
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this->lock->write_lock(this->lock);
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this->methods->insert_last(this->methods, entry);
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this->lock->unlock(this->lock);
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}
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METHOD(eap_manager_t, remove_method, void,
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private_eap_manager_t *this, eap_constructor_t constructor)
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{
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enumerator_t *enumerator;
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eap_entry_t *entry;
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this->lock->write_lock(this->lock);
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enumerator = this->methods->create_enumerator(this->methods);
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while (enumerator->enumerate(enumerator, &entry))
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{
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if (constructor == entry->constructor)
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{
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this->methods->remove_at(this->methods, enumerator);
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free(entry);
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}
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}
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enumerator->destroy(enumerator);
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this->lock->unlock(this->lock);
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}
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METHOD(eap_manager_t, create_instance, eap_method_t*,
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private_eap_manager_t *this, eap_type_t type, u_int32_t vendor,
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eap_role_t role, identification_t *server, identification_t *peer)
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{
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enumerator_t *enumerator;
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eap_entry_t *entry;
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eap_method_t *method = NULL;
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this->lock->read_lock(this->lock);
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enumerator = this->methods->create_enumerator(this->methods);
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while (enumerator->enumerate(enumerator, &entry))
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{
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if (type == entry->type && vendor == entry->vendor &&
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role == entry->role)
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{
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method = entry->constructor(server, peer);
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if (method)
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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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enumerator->destroy(enumerator);
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this->lock->unlock(this->lock);
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return method;
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}
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METHOD(eap_manager_t, destroy, void,
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private_eap_manager_t *this)
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{
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this->methods->destroy_function(this->methods, free);
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this->lock->destroy(this->lock);
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free(this);
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}
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/*
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* See header
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*/
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eap_manager_t *eap_manager_create()
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{
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private_eap_manager_t *this;
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INIT(this,
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.public = {
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.add_method = _add_method,
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.remove_method = _remove_method,
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.create_instance = _create_instance,
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.destroy = _destroy,
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},
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.methods = linked_list_create(),
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.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
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);
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return &this->public;
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}
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