merged the modularization branch (credentials) back to trunk

src/charon/sa/authenticators/eap/eap_manager.c

@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 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.
+ *
+ * $Id$
+ */
+
+#include "eap_manager.h"
+
+#include <pthread.h>
+
+#include <utils/linked_list.h>
+
+typedef struct private_eap_manager_t private_eap_manager_t;
+typedef struct eap_entry_t eap_entry_t;
+
+/**
+ * EAP constructor entry
+ */
+struct eap_entry_t {
+	
+	/**
+	 * EAP method type, vendor specific if vendor is set
+	 */
+	eap_type_t type;
+	
+	/**
+	 * vendor ID, 0 for default EAP methods
+	 */
+	u_int32_t vendor;
+	
+	/**
+	 * Role of the method returned by the constructor, EAP_SERVER or EAP_PEER
+	 */
+	eap_role_t role;
+	
+	/**
+	 * constructor function to create instance
+	 */
+	eap_constructor_t constructor;
+};
+
+/**
+ * private data of eap_manager
+ */
+struct private_eap_manager_t {
+
+	/**
+	 * public functions
+	 */
+	eap_manager_t public;
+	
+	/**
+	 * list of eap_entry_t's
+	 */
+	linked_list_t *methods;
+	
+	/**
+	 * mutex to lock methods
+	 */
+	pthread_mutex_t mutex;
+};
+
+/**
+ * Implementation of eap_manager_t.add_method.
+ */
+static void add_method(private_eap_manager_t *this, eap_type_t type,
+					   u_int32_t vendor, eap_role_t role,
+					   eap_constructor_t constructor)
+{
+	eap_entry_t *entry = malloc_thing(eap_entry_t);
+	
+	entry->type = type;
+	entry->vendor = vendor;
+	entry->role = role;
+	entry->constructor = constructor;
+
+	pthread_mutex_lock(&this->mutex);
+	this->methods->insert_last(this->methods, entry);
+	pthread_mutex_unlock(&this->mutex);
+}
+
+/**
+ * Implementation of eap_manager_t.remove_method.
+ */
+static void remove_method(private_eap_manager_t *this, eap_constructor_t constructor)
+{
+	enumerator_t *enumerator;
+	eap_entry_t *entry;
+	
+	pthread_mutex_lock(&this->mutex);
+	enumerator = this->methods->create_enumerator(this->methods);
+	while (enumerator->enumerate(enumerator, &entry))
+	{
+		if (constructor == entry->constructor)
+		{
+			this->methods->remove_at(this->methods, enumerator);
+			free(entry);
+		}
+	}
+	enumerator->destroy(enumerator);
+	pthread_mutex_unlock(&this->mutex);
+}
+
+/**
+ * Implementation of eap_manager_t.create_instance.
+ */
+static eap_method_t* create_instance(private_eap_manager_t *this,
+									 eap_type_t type, u_int32_t vendor,
+									 eap_role_t role, identification_t *server,
+									 identification_t *peer)
+{
+	enumerator_t *enumerator;
+	eap_entry_t *entry;
+	eap_method_t *method = NULL;
+	
+	pthread_mutex_lock(&this->mutex);
+	enumerator = this->methods->create_enumerator(this->methods);
+	while (enumerator->enumerate(enumerator, &entry))
+	{
+		if (type == entry->type && vendor == entry->vendor &&
+			role == entry->role)
+		{
+			method = entry->constructor(server, peer);
+			if (method)
+			{
+				break;
+			}
+		}
+	}
+	enumerator->destroy(enumerator);
+	pthread_mutex_unlock(&this->mutex);
+	return method;
+}
+
+/**
+ * Implementation of 2008_t.destroy
+ */
+static void destroy(private_eap_manager_t *this)
+{
+	this->methods->destroy_function(this->methods, free);
+	free(this);
+}
+
+/*
+ * see header file
+ */
+eap_manager_t *eap_manager_create()
+{
+	private_eap_manager_t *this = malloc_thing(private_eap_manager_t);
+	
+	this->public.add_method = (void(*)(eap_manager_t*, eap_type_t type, u_int32_t vendor, eap_role_t role, eap_constructor_t constructor))add_method;
+	this->public.remove_method = (void(*)(eap_manager_t*, eap_constructor_t constructor))remove_method;
+	this->public.create_instance = (eap_method_t*(*)(eap_manager_t*, eap_type_t type, u_int32_t vendor, eap_role_t role, identification_t*,identification_t*))create_instance;
+	this->public.destroy = (void(*)(eap_manager_t*))destroy;
+	
+	this->methods = linked_list_create();
+	pthread_mutex_init(&this->mutex, NULL);
+	
+	return &this->public;
+}
+