1 files changed, 157 insertions, 0 deletions
diff --git a/src/libcharon/sa/xauth/xauth_manager.c b/src/libcharon/sa/xauth/xauth_manager.c
new file mode 100644
index 000000000..432c9c0ab
--- /dev/null
+++ b/src/libcharon/sa/xauth/xauth_manager.c
@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2011 Martin Willi
+ * Copyright (C) 2011 revosec AG
+ *
+ * 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 "xauth_manager.h"
+
+#include <utils/linked_list.h>
+#include <threading/rwlock.h>
+
+typedef struct private_xauth_manager_t private_xauth_manager_t;
+typedef struct xauth_entry_t xauth_entry_t;
+
+/**
+ * XAuth constructor entry
+ */
+struct xauth_entry_t {
+
+	/**
+	 * Xauth backend name
+	 */
+	char *name;
+
+	/**
+	 * Role of the method, XAUTH_SERVER or XAUTH_PEER
+	 */
+	xauth_role_t role;
+
+	/**
+	 * constructor function to create instance
+	 */
+	xauth_constructor_t constructor;
+};
+
+/**
+ * private data of xauth_manager
+ */
+struct private_xauth_manager_t {
+
+	/**
+	 * public functions
+	 */
+	xauth_manager_t public;
+
+	/**
+	 * list of eap_entry_t's
+	 */
+	linked_list_t *methods;
+
+	/**
+	 * rwlock to lock methods
+	 */
+	rwlock_t *lock;
+};
+
+METHOD(xauth_manager_t, add_method, void,
+	private_xauth_manager_t *this, char *name, xauth_role_t role,
+	xauth_constructor_t constructor)
+{
+	xauth_entry_t *entry;
+
+	INIT(entry,
+		.name = name,
+		.role = role,
+		.constructor = constructor,
+	);
+
+	this->lock->write_lock(this->lock);
+	this->methods->insert_last(this->methods, entry);
+	this->lock->unlock(this->lock);
+}
+
+METHOD(xauth_manager_t, remove_method, void,
+	private_xauth_manager_t *this, xauth_constructor_t constructor)
+{
+	enumerator_t *enumerator;
+	xauth_entry_t *entry;
+
+	this->lock->write_lock(this->lock);
+	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);
+	this->lock->unlock(this->lock);
+}
+
+METHOD(xauth_manager_t, create_instance, xauth_method_t*,
+	private_xauth_manager_t *this, char *name, xauth_role_t role,
+	identification_t *server, identification_t *peer)
+{
+	enumerator_t *enumerator;
+	xauth_entry_t *entry;
+	xauth_method_t *method = NULL;
+
+	this->lock->read_lock(this->lock);
+	enumerator = this->methods->create_enumerator(this->methods);
+	while (enumerator->enumerate(enumerator, &entry))
+	{
+		if (role == entry->role &&
+			(!name || streq(name, entry->name)))
+		{
+			method = entry->constructor(server, peer);
+			if (method)
+			{
+				break;
+			}
+		}
+	}
+	enumerator->destroy(enumerator);
+	this->lock->unlock(this->lock);
+	return method;
+}
+
+METHOD(xauth_manager_t, destroy, void,
+	private_xauth_manager_t *this)
+{
+	this->methods->destroy_function(this->methods, free);
+	this->lock->destroy(this->lock);
+	free(this);
+}
+
+/*
+ * See header
+ */
+xauth_manager_t *xauth_manager_create()
+{
+	private_xauth_manager_t *this;
+
+	INIT(this,
+		.public = {
+			.add_method = _add_method,
+			.remove_method = _remove_method,
+			.create_instance = _create_instance,
+			.destroy = _destroy,
+		},
+		.methods = linked_list_create(),
+		.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
+	);
+
+	return &this->public;
+}