1 files changed, 145 insertions, 0 deletions
diff --git a/src/charon/config/attributes/attribute_manager.c b/src/charon/config/attributes/attribute_manager.c
new file mode 100644
index 000000000..0ec84c7be
--- /dev/null
+++ b/src/charon/config/attributes/attribute_manager.c
@@ -0,0 +1,145 @@
+/*
+ * 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 "attribute_manager.h"
+
+#include <utils/linked_list.h>
+#include <utils/mutex.h>
+
+typedef struct private_attribute_manager_t private_attribute_manager_t;
+
+/**
+ * private data of attribute_manager
+ */
+struct private_attribute_manager_t {
+
+	/**
+	 * public functions
+	 */
+	attribute_manager_t public;
+	
+	/**
+	 * list of registered providers
+	 */
+	linked_list_t *providers;
+	
+	/**
+	 * mutex to lock provider list
+	 */
+	mutex_t *mutex;
+};
+
+/**
+ * Implementation of attribute_manager_t.acquire_address.
+ */
+static host_t* acquire_address(private_attribute_manager_t *this,
+							   char *pool, identification_t *id,
+							   auth_info_t *auth, host_t *requested)
+{
+	enumerator_t *enumerator;
+	attribute_provider_t *current;
+	host_t *host = NULL;
+
+	this->mutex->lock(this->mutex);
+	enumerator = this->providers->create_enumerator(this->providers);
+	while (enumerator->enumerate(enumerator, &current))
+	{
+		host = current->acquire_address(current, pool, id, auth, requested);
+		if (host)
+		{
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+	this->mutex->unlock(this->mutex);
+	
+	return host;
+}
+
+/**
+ * Implementation of attribute_manager_t.release_address.
+ */
+static void release_address(private_attribute_manager_t *this,
+							char *pool, host_t *address)
+{
+	enumerator_t *enumerator;
+	attribute_provider_t *current;
+
+	this->mutex->lock(this->mutex);
+	enumerator = this->providers->create_enumerator(this->providers);
+	while (enumerator->enumerate(enumerator, &current))
+	{
+		if (current->release_address(current, pool, address))
+		{
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+	this->mutex->unlock(this->mutex);
+}
+
+/**
+ * Implementation of attribute_manager_t.add_provider.
+ */
+static void add_provider(private_attribute_manager_t *this,
+						 attribute_provider_t *provider)
+{
+	this->mutex->lock(this->mutex);
+	this->providers->insert_last(this->providers, provider);
+	this->mutex->unlock(this->mutex);
+}
+
+/**
+ * Implementation of attribute_manager_t.remove_provider.
+ */
+static void remove_provider(private_attribute_manager_t *this,
+							attribute_provider_t *provider)
+{
+	this->mutex->lock(this->mutex);
+	this->providers->remove(this->providers, provider, NULL);
+	this->mutex->unlock(this->mutex);
+}
+
+/**
+ * Implementation of attribute_manager_t.destroy
+ */
+static void destroy(private_attribute_manager_t *this)
+{
+	this->providers->destroy(this->providers);
+	this->mutex->destroy(this->mutex);
+	free(this);
+}
+
+/*
+ * see header file
+ */
+attribute_manager_t *attribute_manager_create()
+{
+	private_attribute_manager_t *this = malloc_thing(private_attribute_manager_t);
+	
+	this->public.acquire_address = (host_t*(*)(attribute_manager_t*, char*, identification_t*,auth_info_t*,host_t*))acquire_address;
+	this->public.release_address = (void(*)(attribute_manager_t*, char *, host_t*))release_address;
+	this->public.add_provider = (void(*)(attribute_manager_t*, attribute_provider_t *provider))add_provider;
+	this->public.remove_provider = (void(*)(attribute_manager_t*, attribute_provider_t *provider))remove_provider;
+	this->public.destroy = (void(*)(attribute_manager_t*))destroy;
+	
+	this->providers = linked_list_create();
+	this->mutex = mutex_create(MUTEX_DEFAULT);
+	
+	return &this->public;
+}
+