implemented IMC/IMV handler

2010-11-09 20:43:50 +01:00
parent 4da597631f
commit 1888dd6bd5
21 changed files with 1262 additions and 30 deletions
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2010 Andreas Steffen
+ * HSR 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 "tnccs_manager.h"
+
+#include <utils/linked_list.h>
+#include <threading/rwlock.h>
+
+typedef struct private_tnccs_manager_t private_tnccs_manager_t;
+typedef struct tnccs_entry_t tnccs_entry_t;
+
+/**
+ * TNCCS constructor entry
+ */
+struct tnccs_entry_t {
+
+	/**
+	 * TNCCS protocol type
+	 */
+	tnccs_type_t type;
+
+	/**
+	 * constructor function to create instance
+	 */
+	tnccs_constructor_t constructor;
+};
+
+/**
+ * private data of tnccs_manager
+ */
+struct private_tnccs_manager_t {
+
+	/**
+	 * public functions
+	 */
+	tnccs_manager_t public;
+
+	/**
+	 * list of tnccs_entry_t's
+	 */
+	linked_list_t *protocols;
+
+	/**
+	 * rwlock to lock methods
+	 */
+	rwlock_t *lock;
+};
+
+METHOD(tnccs_manager_t, add_method, void,
+	private_tnccs_manager_t *this, tnccs_type_t type,
+	tnccs_constructor_t constructor)
+{
+	tnccs_entry_t *entry = malloc_thing(tnccs_entry_t);
+
+	entry->type = type;
+	entry->constructor = constructor;
+
+	this->lock->write_lock(this->lock);
+	this->protocols->insert_last(this->protocols, entry);
+	this->lock->unlock(this->lock);
+}
+
+METHOD(tnccs_manager_t, remove_method, void,
+	private_tnccs_manager_t *this, tnccs_constructor_t constructor)
+{
+	enumerator_t *enumerator;
+	tnccs_entry_t *entry;
+
+	this->lock->write_lock(this->lock);
+	enumerator = this->protocols->create_enumerator(this->protocols);
+	while (enumerator->enumerate(enumerator, &entry))
+	{
+		if (constructor == entry->constructor)
+		{
+			this->protocols->remove_at(this->protocols, enumerator);
+			free(entry);
+		}
+	}
+	enumerator->destroy(enumerator);
+	this->lock->unlock(this->lock);
+}
+
+METHOD(tnccs_manager_t, create_instance, tnccs_t*,
+	private_tnccs_manager_t *this, tnccs_type_t type, bool is_server)
+{
+	enumerator_t *enumerator;
+	tnccs_entry_t *entry;
+	tnccs_t *protocol = NULL;
+
+	this->lock->read_lock(this->lock);
+	enumerator = this->protocols->create_enumerator(this->protocols);
+	while (enumerator->enumerate(enumerator, &entry))
+	{
+		if (type == entry->type)
+		{
+			protocol = entry->constructor(is_server);
+			if (protocol)
+			{
+				break;
+			}
+		}
+	}
+	enumerator->destroy(enumerator);
+	this->lock->unlock(this->lock);
+	return protocol;
+}
+
+METHOD(tnccs_manager_t, destroy, void,
+	private_tnccs_manager_t *this)
+{
+	this->protocols->destroy_function(this->protocols, free);
+	this->lock->destroy(this->lock);
+	free(this);
+}
+
+/*
+ * See header
+ */
+tnccs_manager_t *tnccs_manager_create()
+{
+	private_tnccs_manager_t *this;
+
+	INIT(this,
+			.public = {
+				.add_method = _add_method,
+				.remove_method = _remove_method,
+				.create_instance = _create_instance,
+				.destroy = _destroy,
+			},
+			.protocols = linked_list_create(),
+			.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
+	);
+
+	return &this->public;
+}
+