[svn-upgrade] Integrating new upstream version, strongswan (4.4.0)

26 files changed, 5950 insertions, 0 deletions

diff --git a/src/libhydra/Android.mk b/src/libhydra/Android.mk
new file mode 100644
index 000000000..caad7447a
--- /dev/null
+++ b/src/libhydra/Android.mk
@@ -0,0 +1,34 @@
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+# copy-n-paste from Makefile.am
+LOCAL_SRC_FILES := \
+hydra.c hydra.h \
+attributes/attributes.c attributes/attributes.h \
+attributes/attribute_provider.h attributes/attribute_handler.h \
+attributes/attribute_manager.c attributes/attribute_manager.h \
+attributes/mem_pool.c attributes/mem_pool.h
+
+# adding the plugin source files
+
+LOCAL_SRC_FILES += $(call add_plugin, attr)
+
+# build libcharon --------------------------------------------------------------
+
+LOCAL_C_INCLUDES += \
+	$(libvstr_PATH) \
+	$(strongswan_PATH)/src/include \
+	$(strongswan_PATH)/src/libstrongswan
+
+LOCAL_CFLAGS := $(strongswan_CFLAGS)
+
+LOCAL_MODULE := libhydra
+
+LOCAL_ARM_MODE := arm
+
+LOCAL_PRELINK_MODULE := false
+
+LOCAL_SHARED_LIBRARIES += libstrongswan
+
+include $(BUILD_SHARED_LIBRARY)
+
diff --git a/src/libhydra/Makefile.am b/src/libhydra/Makefile.am
new file mode 100644
index 000000000..601a56e38
--- /dev/null
+++ b/src/libhydra/Makefile.am
@@ -0,0 +1,42 @@
+lib_LTLIBRARIES = libhydra.la
+
+libhydra_la_SOURCES = \
+hydra.c hydra.h \
+attributes/attributes.c attributes/attributes.h \
+attributes/attribute_provider.h attributes/attribute_handler.h \
+attributes/attribute_manager.c attributes/attribute_manager.h \
+attributes/mem_pool.c attributes/mem_pool.h
+
+libhydra_la_LIBADD =
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan
+AM_CFLAGS = \
+-DIPSEC_DIR=\"${ipsecdir}\" \
+-DPLUGINDIR=\"${plugindir}\" \
+-DSTRONGSWAN_CONF=\"${strongswan_conf}\"
+
+EXTRA_DIST = Android.mk
+
+# build optional plugins
+########################
+
+if MONOLITHIC
+SUBDIRS =
+else
+SUBDIRS = .
+endif
+
+if USE_ATTR
+  SUBDIRS += plugins/attr
+if MONOLITHIC
+  libhydra_la_LIBADD += plugins/attr/libstrongswan-attr.la
+endif
+endif
+
+if USE_ATTR_SQL
+  SUBDIRS += plugins/attr_sql
+if MONOLITHIC
+  libhydra_la_LIBADD += plugins/attr_sql/libstrongswan-attr-sql.la
+endif
+endif
+
diff --git a/src/libhydra/Makefile.in b/src/libhydra/Makefile.in
new file mode 100644
index 000000000..32027d1ea
--- /dev/null
+++ b/src/libhydra/Makefile.in
@@ -0,0 +1,762 @@
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+
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+# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
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+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
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+
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+
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+GTAGS:
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+distdir: $(DISTFILES)
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+.PHONY: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) CTAGS GTAGS \
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+	install-data-am install-dvi install-dvi-am install-exec \
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diff --git a/src/libhydra/attributes/attribute_handler.h b/src/libhydra/attributes/attribute_handler.h
new file mode 100644
index 000000000..d042f47ef
--- /dev/null
+++ b/src/libhydra/attributes/attribute_handler.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+/**
+ * @defgroup attribute_handler attribute_handler
+ * @{ @ingroup attributes
+ */
+
+#ifndef ATTRIBUTE_HANDLER_H_
+#define ATTRIBUTE_HANDLER_H_
+
+#include <chunk.h>
+#include <utils/host.h>
+#include <utils/identification.h>
+
+#include "attributes.h"
+
+typedef struct attribute_handler_t attribute_handler_t;
+
+/**
+ * Interface to handle configuration payload attributes.
+ */
+struct attribute_handler_t {
+
+	/**
+	 * Handle a configuration attribute.
+	 *
+	 * After receiving a configuration attriubte, it is passed to each
+	 * attribute handler until it is handled.
+	 *
+	 * @param server	server from which the attribute was received
+	 * @param type		type of configuration attribute to handle
+	 * @param data		associated attribute data
+	 * @return			TRUE if attribute handled
+	 */
+	bool (*handle)(attribute_handler_t *this, identification_t *server,
+				   configuration_attribute_type_t type, chunk_t data);
+
+	/**
+	 * Release an attribute handled during handle().
+	 *
+	 * A handler that handle()d an attribute gets a call to release() when the
+	 * connection gets closed. Depending on the implementation, this is required
+	 * to remove the attribute.
+	 */
+	void (*release)(attribute_handler_t *this, identification_t *server,
+					configuration_attribute_type_t type, chunk_t data);
+
+	/**
+	 * Enumerate attributes to request from a server.
+	 *
+	 * @param server		server identity to request attributes from
+	 * @param vip			virtual IP we are requesting, if any
+	 * @return				enumerator (configuration_attribute_type_t, chunk_t)
+	 */
+	enumerator_t* (*create_attribute_enumerator)(attribute_handler_t *this,
+										identification_t *server, host_t *vip);
+};
+
+#endif /** ATTRIBUTE_HANDLER_H_ @}*/
diff --git a/src/libhydra/attributes/attribute_manager.c b/src/libhydra/attributes/attribute_manager.c
new file mode 100644
index 000000000..3080b56eb
--- /dev/null
+++ b/src/libhydra/attributes/attribute_manager.c
@@ -0,0 +1,374 @@
+/*
+ * 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.
+ */
+
+#include "attribute_manager.h"
+
+#include <debug.h>
+#include <utils/linked_list.h>
+#include <threading/rwlock.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;
+
+	/**
+	 * list of registered handlers
+	 */
+	linked_list_t *handlers;
+
+	/**
+	 * rwlock provider list
+	 */
+	rwlock_t *lock;
+};
+
+/**
+ * Data to pass to enumerator filters
+ */
+typedef struct {
+	/** server/peer identity */
+	identification_t *id;
+	/** requesting/assigned virtual IP */
+	host_t *vip;
+} enum_data_t;
+
+/**
+ * Implementation of attribute_manager_t.acquire_address.
+ */
+static host_t* acquire_address(private_attribute_manager_t *this,
+							   char *pool, identification_t *id,
+							   host_t *requested)
+{
+	enumerator_t *enumerator;
+	attribute_provider_t *current;
+	host_t *host = NULL;
+
+	this->lock->read_lock(this->lock);
+	enumerator = this->providers->create_enumerator(this->providers);
+	while (enumerator->enumerate(enumerator, &current))
+	{
+		host = current->acquire_address(current, pool, id, requested);
+		if (host)
+		{
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+	this->lock->unlock(this->lock);
+
+	if (!host)
+	{
+		DBG1(DBG_CFG, "acquiring address from pool '%s' failed", pool);
+	}
+	return host;
+}
+
+/**
+ * Implementation of attribute_manager_t.release_address.
+ */
+static void release_address(private_attribute_manager_t *this,
+							char *pool, host_t *address, identification_t *id)
+{
+	enumerator_t *enumerator;
+	attribute_provider_t *current;
+	bool found = FALSE;
+
+	this->lock->read_lock(this->lock);
+	enumerator = this->providers->create_enumerator(this->providers);
+	while (enumerator->enumerate(enumerator, &current))
+	{
+		if (current->release_address(current, pool, address, id))
+		{
+			found = TRUE;
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+	this->lock->unlock(this->lock);
+
+	if (!found)
+	{
+		DBG1(DBG_CFG, "releasing address to pool '%s' failed", pool);
+	}
+}
+
+/**
+ * inner enumerator constructor for responder attributes
+ */
+static enumerator_t *responder_enum_create(attribute_provider_t *provider,
+										   enum_data_t *data)
+{
+	return provider->create_attribute_enumerator(provider, data->id, data->vip);
+}
+
+/**
+ * Implementation of attribute_manager_t.create_responder_enumerator
+ */
+static enumerator_t* create_responder_enumerator(
+			private_attribute_manager_t *this, identification_t *id, host_t *vip)
+{
+	enum_data_t *data = malloc_thing(enum_data_t);
+
+	data->id = id;
+	data->vip = vip;
+	this->lock->read_lock(this->lock);
+	return enumerator_create_cleaner(
+				enumerator_create_nested(
+					this->providers->create_enumerator(this->providers),
+					(void*)responder_enum_create, data, free),
+				(void*)this->lock->unlock, this->lock);
+}
+
+/**
+ * Implementation of attribute_manager_t.add_provider.
+ */
+static void add_provider(private_attribute_manager_t *this,
+						 attribute_provider_t *provider)
+{
+	this->lock->write_lock(this->lock);
+	this->providers->insert_last(this->providers, provider);
+	this->lock->unlock(this->lock);
+}
+
+/**
+ * Implementation of attribute_manager_t.remove_provider.
+ */
+static void remove_provider(private_attribute_manager_t *this,
+							attribute_provider_t *provider)
+{
+	this->lock->write_lock(this->lock);
+	this->providers->remove(this->providers, provider, NULL);
+	this->lock->unlock(this->lock);
+}
+
+/**
+ * Implementation of attribute_manager_t.handle
+ */
+static attribute_handler_t* handle(private_attribute_manager_t *this,
+						identification_t *server, attribute_handler_t *handler,
+						configuration_attribute_type_t type, chunk_t data)
+{
+	enumerator_t *enumerator;
+	attribute_handler_t *current, *handled = NULL;
+
+	this->lock->read_lock(this->lock);
+
+	/* try to find the passed handler */
+	enumerator = this->handlers->create_enumerator(this->handlers);
+	while (enumerator->enumerate(enumerator, &current))
+	{
+		if (current == handler && current->handle(current, server, type, data))
+		{
+			handled = current;
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+	if (!handled)
+	{	/* handler requesting this attribute not found, try any other */
+		enumerator = this->handlers->create_enumerator(this->handlers);
+		while (enumerator->enumerate(enumerator, &current))
+		{
+			if (current->handle(current, server, type, data))
+			{
+				handled = current;
+				break;
+			}
+		}
+		enumerator->destroy(enumerator);
+	}
+	this->lock->unlock(this->lock);
+
+	if (!handled)
+	{
+		DBG1(DBG_CFG, "handling %N attribute failed",
+			 configuration_attribute_type_names, type);
+	}
+	return handled;
+}
+
+/**
+ * Implementation of attribute_manager_t.release
+ */
+static void release(private_attribute_manager_t *this,
+					attribute_handler_t *handler,
+					identification_t *server,
+					configuration_attribute_type_t type, chunk_t data)
+{
+	enumerator_t *enumerator;
+	attribute_handler_t *current;
+
+	this->lock->read_lock(this->lock);
+	enumerator = this->handlers->create_enumerator(this->handlers);
+	while (enumerator->enumerate(enumerator, &current))
+	{
+		if (current == handler)
+		{
+			current->release(current, server, type, data);
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+	this->lock->unlock(this->lock);
+}
+
+/**
+ * Enumerator implementation to enumerate nested initiator attributes
+ */
+typedef struct {
+	/** implements enumerator_t */
+	enumerator_t public;
+	/** back ref */
+	private_attribute_manager_t *this;
+	/** currently processing handler */
+	attribute_handler_t *handler;
+	/** outer enumerator over handlers */
+	enumerator_t *outer;
+	/** inner enumerator over current handlers attributes */
+	enumerator_t *inner;
+	/** server ID we want attributes for */
+	identification_t *id;
+	/** virtual IP we are requesting along with attriubutes */
+	host_t *vip;
+} initiator_enumerator_t;
+
+/**
+ * Enumerator implementation for initiator attributes
+ */
+static bool initiator_enumerate(initiator_enumerator_t *this,
+								attribute_handler_t **handler,
+								configuration_attribute_type_t *type,
+								chunk_t *value)
+{
+	/* enumerate inner attributes using outer handler enumerator */
+	while (!this->inner || !this->inner->enumerate(this->inner, type, value))
+	{
+		if (!this->outer->enumerate(this->outer, &this->handler))
+		{
+			return FALSE;
+		}
+		DESTROY_IF(this->inner);
+		this->inner = this->handler->create_attribute_enumerator(this->handler,
+														this->id, this->vip);
+	}
+	/* inject the handler as additional attribute */
+	*handler = this->handler;
+	return TRUE;
+}
+
+/**
+ * Cleanup function of initiator attribute enumerator
+ */
+static void initiator_destroy(initiator_enumerator_t *this)
+{
+	this->this->lock->unlock(this->this->lock);
+	this->outer->destroy(this->outer);
+	DESTROY_IF(this->inner);
+	free(this);
+}
+
+/**
+ * Implementation of attribute_manager_t.create_initiator_enumerator
+ */
+static enumerator_t* create_initiator_enumerator(
+		private_attribute_manager_t *this, identification_t *id, host_t *vip)
+{
+	initiator_enumerator_t *enumerator = malloc_thing(initiator_enumerator_t);
+
+	this->lock->read_lock(this->lock);
+	enumerator->public.enumerate = (void*)initiator_enumerate;
+	enumerator->public.destroy = (void*)initiator_destroy;
+	enumerator->this = this;
+	enumerator->id = id;
+	enumerator->vip = vip;
+	enumerator->outer = this->handlers->create_enumerator(this->handlers);
+	enumerator->inner = NULL;
+	enumerator->handler = NULL;
+
+	return &enumerator->public;
+}
+
+/**
+ * Implementation of attribute_manager_t.add_handler
+ */
+static void add_handler(private_attribute_manager_t *this,
+						attribute_handler_t *handler)
+{
+	this->lock->write_lock(this->lock);
+	this->handlers->insert_last(this->handlers, handler);
+	this->lock->unlock(this->lock);
+}
+
+/**
+ * Implementation of attribute_manager_t.remove_handler
+ */
+static void remove_handler(private_attribute_manager_t *this,
+						attribute_handler_t *handler)
+{
+	this->lock->write_lock(this->lock);
+	this->handlers->remove(this->handlers, handler, NULL);
+	this->lock->unlock(this->lock);
+}
+
+/**
+ * Implementation of attribute_manager_t.destroy
+ */
+static void destroy(private_attribute_manager_t *this)
+{
+	this->providers->destroy(this->providers);
+	this->handlers->destroy(this->handlers);
+	this->lock->destroy(this->lock);
+	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*,host_t*))acquire_address;
+	this->public.release_address = (void(*)(attribute_manager_t*, char *, host_t*, identification_t*))release_address;
+	this->public.create_responder_enumerator = (enumerator_t*(*)(attribute_manager_t*, identification_t*, host_t*))create_responder_enumerator;
+	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.handle = (attribute_handler_t*(*)(attribute_manager_t*,identification_t*, attribute_handler_t*, configuration_attribute_type_t, chunk_t))handle;
+	this->public.release = (void(*)(attribute_manager_t*, attribute_handler_t*, identification_t*, configuration_attribute_type_t, chunk_t))release;
+	this->public.create_initiator_enumerator = (enumerator_t*(*)(attribute_manager_t*, identification_t*, host_t*))create_initiator_enumerator;
+	this->public.add_handler = (void(*)(attribute_manager_t*, attribute_handler_t*))add_handler;
+	this->public.remove_handler = (void(*)(attribute_manager_t*, attribute_handler_t*))remove_handler;
+	this->public.destroy = (void(*)(attribute_manager_t*))destroy;
+
+	this->providers = linked_list_create();
+	this->handlers = linked_list_create();
+	this->lock = rwlock_create(RWLOCK_TYPE_DEFAULT);
+
+	return &this->public;
+}
+
diff --git a/src/libhydra/attributes/attribute_manager.h b/src/libhydra/attributes/attribute_manager.h
new file mode 100644
index 000000000..642662366
--- /dev/null
+++ b/src/libhydra/attributes/attribute_manager.h
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2008-2009 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.
+ */
+
+/**
+ * @defgroup attribute_manager attribute_manager
+ * @{ @ingroup attributes
+ */
+
+#ifndef ATTRIBUTE_MANAGER_H_
+#define ATTRIBUTE_MANAGER_H_
+
+#include "attribute_provider.h"
+#include "attribute_handler.h"
+
+typedef struct attribute_manager_t attribute_manager_t;
+
+/**
+ * The attribute manager hands out attributes or handles them.
+ *
+ * The attribute manager manages both, attribute providers and attribute
+ * handlers. Attribute providers are responsible to hand out attributes if
+ * a connecting peer requests them. Handlers handle such attributes if they
+ * are received on the requesting peer.
+ */
+struct attribute_manager_t {
+
+	/**
+	 * Acquire a virtual IP address to assign to a peer.
+	 *
+	 * @param pool			pool name to acquire address from
+	 * @param id			peer identity to get address forua
+	 * @param requested		IP in configuration request
+	 * @return				allocated address, NULL to serve none
+	 */
+	host_t* (*acquire_address)(attribute_manager_t *this,
+							   char *pool, identification_t *id,
+							   host_t *requested);
+
+	/**
+	 * Release a previously acquired address.
+	 *
+	 * @param pool			pool name from which the address was acquired
+	 * @param address		address to release
+	 * @param id			peer identity to get address for
+	 */
+	void (*release_address)(attribute_manager_t *this,
+							char *pool, host_t *address, identification_t *id);
+
+	/**
+	 * Create an enumerator over attributes to hand out to a peer.
+	 *
+	 * @param id			peer identity to hand out attributes to
+	 * @param vip			virtual IP to assign to peer, if any
+	 * @return				enumerator (configuration_attribute_type_t, chunk_t)
+	 */
+	enumerator_t* (*create_responder_enumerator)(attribute_manager_t *this,
+											identification_t *id, host_t *vip);
+
+	/**
+	 * Register an attribute provider to the manager.
+	 *
+	 * @param provider		attribute provider to register
+	 */
+	void (*add_provider)(attribute_manager_t *this,
+						 attribute_provider_t *provider);
+	/**
+	 * Unregister an attribute provider from the manager.
+	 *
+	 * @param provider		attribute provider to unregister
+	 */
+	void (*remove_provider)(attribute_manager_t *this,
+							attribute_provider_t *provider);
+
+	/**
+	 * Handle a configuration attribute by passing them to the handlers.
+	 *
+	 * @param server		server from which the attribute was received
+	 * @param handler		handler we requested the attribute for, if any
+	 * @param type			type of configuration attribute
+	 * @param data			associated attribute data
+	 * @return				handler which handled this attribute, NULL if none
+	 */
+	attribute_handler_t* (*handle)(attribute_manager_t *this,
+						identification_t *server, attribute_handler_t *handler,
+						configuration_attribute_type_t type, chunk_t data);
+
+	/**
+	 * Release an attribute previously handle()d by a handler.
+	 *
+	 * @param handler		handler returned by handle() for this attribute
+	 * @param server		server from which the attribute was received
+	 * @param type			type of attribute to release
+	 * @param data			associated attribute data
+	 */
+	void (*release)(attribute_manager_t *this, attribute_handler_t *handler,
+						identification_t *server,
+						configuration_attribute_type_t type,
+						chunk_t data);
+
+	/**
+	 * Create an enumerator over attributes to request from server.
+	 *
+	 * @param id			server identity to hand out attributes to
+	 * @param vip			virtual IP going to request, if any
+	 * @return				enumerator (attribute_handler_t, ca_type_t, chunk_t)
+	 */
+	enumerator_t* (*create_initiator_enumerator)(attribute_manager_t *this,
+											identification_t *id, host_t *vip);
+
+	/**
+	 * Register an attribute handler to the manager.
+	 *
+	 * @param handler		attribute handler to register
+	 */
+	void (*add_handler)(attribute_manager_t *this,
+						attribute_handler_t *handler);
+
+	/**
+	 * Unregister an attribute handler from the manager.
+	 *
+	 * @param handler		attribute handler to unregister
+	 */
+	void (*remove_handler)(attribute_manager_t *this,
+						   attribute_handler_t *handler);
+
+	/**
+	 * Destroy a attribute_manager instance.
+	 */
+	void (*destroy)(attribute_manager_t *this);
+};
+
+/**
+ * Create a attribute_manager instance.
+ */
+attribute_manager_t *attribute_manager_create();
+
+#endif /** ATTRIBUTE_MANAGER_H_ @}*/
diff --git a/src/libhydra/attributes/attribute_provider.h b/src/libhydra/attributes/attribute_provider.h
new file mode 100644
index 000000000..f8485cc6c
--- /dev/null
+++ b/src/libhydra/attributes/attribute_provider.h
@@ -0,0 +1,67 @@
+/*
+ * 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.
+ */
+
+/**
+ * @defgroup attribute_provider attribute_provider
+ * @{ @ingroup attributes
+ */
+
+#ifndef ATTRIBUTE_PROVIDER_H_
+#define ATTRIBUTE_PROVIDER_H_
+
+#include <utils/host.h>
+#include <utils/identification.h>
+
+typedef struct attribute_provider_t attribute_provider_t;
+
+/**
+ * Interface to provide attributes to peers through attribute manager.
+ */
+struct attribute_provider_t {
+
+	/**
+	 * Acquire a virtual IP address to assign to a peer.
+	 *
+	 * @param pool			name of the pool to acquire address from
+	 * @param id			peer ID
+	 * @param requested		IP in configuration request
+	 * @return				allocated address, NULL to serve none
+	 */
+	host_t* (*acquire_address)(attribute_provider_t *this,
+							   char *pool, identification_t *id,
+							   host_t *requested);
+	/**
+	 * Release a previously acquired address.
+	 *
+	 * @param pool			name of the pool this address was acquired from
+	 * @param address		address to release
+	 * @param id			peer ID
+	 * @return				TRUE if the address has been released by the provider
+	 */
+	bool (*release_address)(attribute_provider_t *this,
+							char *pool, host_t *address, identification_t *id);
+
+	/**
+	 * Create an enumerator over attributes to hand out to a peer.
+	 *
+	 * @param id			peer ID
+	 * @param vip			virtual IP to assign to peer, if any
+	 * @return				enumerator (configuration_attribute_type_t, chunk_t)
+	 */
+	enumerator_t* (*create_attribute_enumerator)(attribute_provider_t *this,
+											identification_t *id, host_t *vip);
+};
+
+#endif /** ATTRIBUTE_PROVIDER_H_ @}*/
diff --git a/src/libhydra/attributes/attributes.c b/src/libhydra/attributes/attributes.c
new file mode 100644
index 000000000..83feed17e
--- /dev/null
+++ b/src/libhydra/attributes/attributes.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2005-2006 Martin Willi
+ * Copyright (C) 2005 Jan Hutter
+ * 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 "attributes.h"
+
+ENUM_BEGIN(configuration_attribute_type_names, INTERNAL_IP4_ADDRESS, INTERNAL_IP6_PREFIX,
+	"INTERNAL_IP4_ADDRESS",
+	"INTERNAL_IP4_NETMASK",
+	"INTERNAL_IP4_DNS",
+	"INTERNAL_IP4_NBNS",
+	"INTERNAL_ADDRESS_EXPIRY",
+	"INTERNAL_IP4_DHCP",
+	"APPLICATION_VERSION",
+	"INTERNAL_IP6_ADDRESS",
+	"INTERNAL_IP6_NETMASK",
+	"INTERNAL_IP6_DNS",
+	"INTERNAL_IP6_NBNS",
+	"INTERNAL_IP6_DHCP",
+	"INTERNAL_IP4_SUBNET",
+	"SUPPORTED_ATTRIBUTES",
+	"INTERNAL_IP6_SUBNET",
+	"MIP6_HOME_PREFIX",
+	"INTERNAL_IP6_LINK",
+	"INTERNAL_IP6_PREFIX");
+ENUM_NEXT(configuration_attribute_type_names, INTERNAL_IP4_SERVER, INTERNAL_IP6_SERVER, INTERNAL_IP6_PREFIX,
+	"INTERNAL_IP4_SERVER",
+	"INTERNAL_IP6_SERVER");
+ENUM_END(configuration_attribute_type_names, INTERNAL_IP6_SERVER);
+
diff --git a/src/libhydra/attributes/attributes.h b/src/libhydra/attributes/attributes.h
new file mode 100644
index 000000000..f4a396f21
--- /dev/null
+++ b/src/libhydra/attributes/attributes.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2005-2006 Martin Willi
+ * Copyright (C) 2005 Jan Hutter
+ * 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.
+ */
+
+/**
+ * @defgroup attributes_g attributes
+ * @{ @ingroup attributes
+ */
+
+#ifndef ATTRIBUTES_H_
+#define ATTRIBUTES_H_
+
+typedef enum configuration_attribute_type_t configuration_attribute_type_t;
+
+#include <enum.h>
+
+/**
+ * Type of the attribute, as in IKEv2 RFC 3.15.1 or IKEv1 ModeConfig.
+ */
+enum configuration_attribute_type_t {
+	INTERNAL_IP4_ADDRESS = 1,
+	INTERNAL_IP4_NETMASK = 2,
+	INTERNAL_IP4_DNS = 3,
+	INTERNAL_IP4_NBNS = 4,
+	INTERNAL_ADDRESS_EXPIRY = 5,
+	INTERNAL_IP4_DHCP = 6,
+	APPLICATION_VERSION = 7,
+	INTERNAL_IP6_ADDRESS = 8,
+	INTERNAL_IP6_NETMASK = 9,
+	INTERNAL_IP6_DNS = 10,
+	INTERNAL_IP6_NBNS = 11,
+	INTERNAL_IP6_DHCP = 12,
+	INTERNAL_IP4_SUBNET = 13,
+	SUPPORTED_ATTRIBUTES = 14,
+	INTERNAL_IP6_SUBNET = 15,
+	MIP6_HOME_PREFIX = 16,
+	INTERNAL_IP6_LINK = 17,
+	INTERNAL_IP6_PREFIX = 18,
+	/* proprietary Microsoft attributes */
+	INTERNAL_IP4_SERVER = 23456,
+	INTERNAL_IP6_SERVER = 23457
+};
+
+/**
+ * enum names for configuration_attribute_type_t.
+ */
+extern enum_name_t *configuration_attribute_type_names;
+
+
+#endif /** ATTRIBUTES_H_ @}*/
diff --git a/src/libhydra/attributes/mem_pool.c b/src/libhydra/attributes/mem_pool.c
new file mode 100644
index 000000000..65018e3a9
--- /dev/null
+++ b/src/libhydra/attributes/mem_pool.c
@@ -0,0 +1,451 @@
+/*
+ * Copyright (C) 2010 Tobias Brunner
+ * 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.
+ */
+
+#include "mem_pool.h"
+
+#include <debug.h>
+#include <utils/hashtable.h>
+#include <threading/rwlock.h>
+
+#define POOL_LIMIT (sizeof(uintptr_t)*8)
+
+typedef struct private_mem_pool_t private_mem_pool_t;
+
+/**
+ * private data of mem_pool_t
+ */
+struct private_mem_pool_t {
+	/**
+	 * public interface
+	 */
+	mem_pool_t public;
+
+	/**
+	 * name of the pool
+	 */
+	char *name;
+
+	/**
+	 * base address of the pool
+	 */
+	host_t *base;
+
+	/**
+	 * size of the pool
+	 */
+	u_int size;
+
+	/**
+	 * next unused address
+	 */
+	u_int unused;
+
+	/**
+	 * hashtable [identity => offset], for online leases
+	 */
+	hashtable_t *online;
+
+	/**
+	 * hashtable [identity => offset], for offline leases
+	 */
+	hashtable_t *offline;
+
+	/**
+	 * hashtable [identity => identity], handles identity references
+	 */
+	hashtable_t *ids;
+
+	/**
+	 * lock to safely access the pool
+	 */
+	rwlock_t *lock;
+};
+
+/**
+ * hashtable hash function for identities
+ */
+static u_int id_hash(identification_t *id)
+{
+	return chunk_hash(id->get_encoding(id));
+}
+
+/**
+ * hashtable equals function for identities
+ */
+static bool id_equals(identification_t *a, identification_t *b)
+{
+	return a->equals(a, b);
+}
+
+/**
+ * convert a pool offset to an address
+ */
+static host_t* offset2host(private_mem_pool_t *pool, int offset)
+{
+	chunk_t addr;
+	host_t *host;
+	u_int32_t *pos;
+
+	offset--;
+	if (offset > pool->size)
+	{
+		return NULL;
+	}
+
+	addr = chunk_clone(pool->base->get_address(pool->base));
+	if (pool->base->get_family(pool->base) == AF_INET6)
+	{
+		pos = (u_int32_t*)(addr.ptr + 12);
+	}
+	else
+	{
+		pos = (u_int32_t*)addr.ptr;
+	}
+	*pos = htonl(offset + ntohl(*pos));
+	host = host_create_from_chunk(pool->base->get_family(pool->base), addr, 0);
+	free(addr.ptr);
+	return host;
+}
+
+/**
+ * convert a host to a pool offset
+ */
+static int host2offset(private_mem_pool_t *pool, host_t *addr)
+{
+	chunk_t host, base;
+	u_int32_t hosti, basei;
+
+	if (addr->get_family(addr) != pool->base->get_family(pool->base))
+	{
+		return -1;
+	}
+	host = addr->get_address(addr);
+	base = pool->base->get_address(pool->base);
+	if (addr->get_family(addr) == AF_INET6)
+	{
+		/* only look at last /32 block */
+		if (!memeq(host.ptr, base.ptr, 12))
+		{
+			return -1;
+		}
+		host = chunk_skip(host, 12);
+		base = chunk_skip(base, 12);
+	}
+	hosti = ntohl(*(u_int32_t*)(host.ptr));
+	basei = ntohl(*(u_int32_t*)(base.ptr));
+	if (hosti > basei + pool->size)
+	{
+		return -1;
+	}
+	return hosti - basei + 1;
+}
+
+METHOD(mem_pool_t, get_name, const char*,
+	   private_mem_pool_t *this)
+{
+	return this->name;
+}
+
+METHOD(mem_pool_t, get_size, u_int,
+	   private_mem_pool_t *this)
+{
+	return this->size;
+}
+
+METHOD(mem_pool_t, get_online, u_int,
+	   private_mem_pool_t *this)
+{
+	u_int count;
+	this->lock->read_lock(this->lock);
+	count = this->online->get_count(this->online);
+	this->lock->unlock(this->lock);
+	return count;
+}
+
+METHOD(mem_pool_t, get_offline, u_int,
+	   private_mem_pool_t *this)
+{
+	u_int count;
+	this->lock->read_lock(this->lock);
+	count = this->offline->get_count(this->offline);
+	this->lock->unlock(this->lock);
+	return count;
+}
+
+METHOD(mem_pool_t, acquire_address, host_t*,
+	   private_mem_pool_t *this, identification_t *id, host_t *requested)
+{
+	uintptr_t offset = 0;
+	enumerator_t *enumerator;
+	identification_t *old_id;
+
+	/* if the pool is empty (e.g. in the %config case) we simply return the
+	 * requested address */
+	if (this->size == 0)
+	{
+		return requested->clone(requested);
+	}
+
+	if (!requested->is_anyaddr(requested) &&
+		requested->get_family(requested) !=
+		this->base->get_family(this->base))
+	{
+		DBG1(DBG_CFG, "IP pool address family mismatch");
+		return NULL;
+	}
+
+	this->lock->write_lock(this->lock);
+	while (TRUE)
+	{
+		/* check for a valid offline lease, refresh */
+		offset = (uintptr_t)this->offline->remove(this->offline, id);
+		if (offset)
+		{
+			id = this->ids->get(this->ids, id);
+			if (id)
+			{
+				DBG1(DBG_CFG, "reassigning offline lease to '%Y'", id);
+				this->online->put(this->online, id, (void*)offset);
+				break;
+			}
+		}
+
+		/* check for a valid online lease, reassign */
+		offset = (uintptr_t)this->online->get(this->online, id);
+		if (offset && offset == host2offset(this, requested))
+		{
+			DBG1(DBG_CFG, "reassigning online lease to '%Y'", id);
+			break;
+		}
+
+		if (this->unused < this->size)
+		{
+			/* assigning offset, starting by 1. Handling 0 in hashtable
+			 * is difficult. */
+			offset = ++this->unused;
+			id = id->clone(id);
+			this->ids->put(this->ids, id, id);
+			this->online->put(this->online, id, (void*)offset);
+			DBG1(DBG_CFG, "assigning new lease to '%Y'", id);
+			break;
+		}
+
+		/* no more addresses, replace the first found offline lease */
+		enumerator = this->offline->create_enumerator(this->offline);
+		if (enumerator->enumerate(enumerator, &old_id, &offset))
+		{
+			offset = (uintptr_t)this->offline->remove(this->offline, old_id);
+			if (offset)
+			{
+				/* destroy reference to old ID */
+				old_id = this->ids->remove(this->ids, old_id);
+				DBG1(DBG_CFG, "reassigning existing offline lease by '%Y'"
+					 " to '%Y'", old_id, id);
+				if (old_id)
+				{
+					old_id->destroy(old_id);
+				}
+				id = id->clone(id);
+				this->ids->put(this->ids, id, id);
+				this->online->put(this->online, id, (void*)offset);
+				enumerator->destroy(enumerator);
+				break;
+			}
+		}
+		enumerator->destroy(enumerator);
+
+		DBG1(DBG_CFG, "pool '%s' is full, unable to assign address",
+			 this->name);
+		break;
+	}
+	this->lock->unlock(this->lock);
+
+	if (offset)
+	{
+		return offset2host(this, offset);
+	}
+	return NULL;
+}
+
+METHOD(mem_pool_t, release_address, bool,
+	   private_mem_pool_t *this, host_t *address, identification_t *id)
+{
+	bool found = FALSE;
+	if (this->size != 0)
+	{
+		uintptr_t offset;
+		this->lock->write_lock(this->lock);
+		offset = (uintptr_t)this->online->remove(this->online, id);
+		if (offset)
+		{
+			id = this->ids->get(this->ids, id);
+			if (id)
+			{
+				DBG1(DBG_CFG, "lease %H by '%Y' went offline", address, id);
+				this->offline->put(this->offline, id, (void*)offset);
+				found = TRUE;
+			}
+		}
+		this->lock->unlock(this->lock);
+	}
+	return found;
+}
+
+/**
+ * lease enumerator
+ */
+typedef struct {
+	/** implemented enumerator interface */
+	enumerator_t public;
+	/** inner hash-table enumerator */
+	enumerator_t *inner;
+	/** enumerated pool */
+	private_mem_pool_t *pool;
+	/** currently enumerated lease address */
+	host_t *current;
+} lease_enumerator_t;
+
+METHOD(enumerator_t, lease_enumerate, bool,
+	   lease_enumerator_t *this, identification_t **id_out, host_t **addr_out,
+	   bool *online)
+{
+	identification_t *id;
+	uintptr_t offset;
+
+	DESTROY_IF(this->current);
+	this->current = NULL;
+
+	if (this->inner->enumerate(this->inner, &id, NULL))
+	{
+		offset = (uintptr_t)this->pool->online->get(this->pool->online, id);
+		if (offset)
+		{
+			*id_out = id;
+			*addr_out = this->current = offset2host(this->pool, offset);
+			*online = TRUE;
+			return TRUE;
+		}
+		offset = (uintptr_t)this->pool->offline->get(this->pool->offline, id);
+		if (offset)
+		{
+			*id_out = id;
+			*addr_out = this->current = offset2host(this->pool, offset);
+			*online = FALSE;
+			return TRUE;
+		}
+	}
+	return FALSE;
+}
+
+METHOD(enumerator_t, lease_enumerator_destroy, void,
+	   lease_enumerator_t *this)
+{
+	DESTROY_IF(this->current);
+	this->inner->destroy(this->inner);
+	this->pool->lock->unlock(this->pool->lock);
+	free(this);
+}
+
+METHOD(mem_pool_t, create_lease_enumerator, enumerator_t*,
+	   private_mem_pool_t *this)
+{
+	lease_enumerator_t *enumerator;
+	this->lock->read_lock(this->lock);
+	INIT(enumerator,
+		.public = {
+			.enumerate = (void*)_lease_enumerate,
+			.destroy = (void*)_lease_enumerator_destroy,
+		},
+		.pool = this,
+		.inner = this->ids->create_enumerator(this->ids),
+	);
+	return &enumerator->public;
+}
+
+METHOD(mem_pool_t, destroy, void,
+	   private_mem_pool_t *this)
+{
+	enumerator_t *enumerator;
+	identification_t *id;
+
+	enumerator = this->ids->create_enumerator(this->ids);
+	while (enumerator->enumerate(enumerator, &id, NULL))
+	{
+		id->destroy(id);
+	}
+	enumerator->destroy(enumerator);
+
+	this->ids->destroy(this->ids);
+	this->online->destroy(this->online);
+	this->offline->destroy(this->offline);
+	this->lock->destroy(this->lock);
+	DESTROY_IF(this->base);
+	free(this->name);
+	free(this);
+}
+
+/**
+ * Described in header
+ */
+mem_pool_t *mem_pool_create(char *name, host_t *base, int bits)
+{
+	private_mem_pool_t *this;
+
+	INIT(this,
+		.public = {
+			.get_name = _get_name,
+			.get_size = _get_size,
+			.get_online = _get_online,
+			.get_offline = _get_offline,
+			.acquire_address = _acquire_address,
+			.release_address = _release_address,
+			.create_lease_enumerator = _create_lease_enumerator,
+			.destroy = _destroy,
+		},
+		.name = strdup(name),
+		.online = hashtable_create((hashtable_hash_t)id_hash,
+								   (hashtable_equals_t)id_equals, 16),
+		.offline = hashtable_create((hashtable_hash_t)id_hash,
+									(hashtable_equals_t)id_equals, 16),
+		.ids = hashtable_create((hashtable_hash_t)id_hash,
+								(hashtable_equals_t)id_equals, 16),
+		.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
+	);
+
+	if (base)
+	{
+		int addr_bits = base->get_family(base) == AF_INET ? 32 : 128;
+		/* net bits -> host bits */
+		bits = addr_bits - bits;
+		if (bits > POOL_LIMIT)
+		{
+			bits = POOL_LIMIT;
+			DBG1(DBG_CFG, "virtual IP pool too large, limiting to %H/%d",
+				 base, addr_bits - bits);
+		}
+		this->size = 1 << (bits);
+
+		if (this->size > 2)
+		{	/* do not use first and last addresses of a block */
+			this->unused++;
+			this->size--;
+		}
+		this->base = base->clone(base);
+	}
+
+	return &this->public;
+}
+
diff --git a/src/libhydra/attributes/mem_pool.h b/src/libhydra/attributes/mem_pool.h
new file mode 100644
index 000000000..bb963de93
--- /dev/null
+++ b/src/libhydra/attributes/mem_pool.h
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2010 Tobias Brunner
+ * 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.
+ */
+
+/**
+ * @defgroup mem_pool mem_pool
+ * @{ @ingroup attributes
+ */
+
+#ifndef MEM_POOL_H
+#define MEM_POOL_H
+
+typedef struct mem_pool_t mem_pool_t;
+
+#include <utils/host.h>
+#include <utils/identification.h>
+
+/**
+ * An in-memory IP address pool.
+ */
+struct mem_pool_t {
+
+	/**
+	 * Get the name of this pool.
+	 *
+	 * @return			the name of this pool
+	 */
+	const char* (*get_name)(mem_pool_t *this);
+
+	/**
+	 * Get the size (i.e. number of addresses) of this pool.
+	 *
+	 * @return			the size of this pool
+	 */
+	u_int (*get_size)(mem_pool_t *this);
+
+	/**
+	 * Get the number of online leases.
+	 *
+	 * @return			the number of offline leases
+	 */
+	u_int (*get_online)(mem_pool_t *this);
+
+	/**
+	 * Get the number of offline leases.
+	 *
+	 * @return			the number of online leases
+	 */
+	u_int (*get_offline)(mem_pool_t *this);
+
+	/**
+	 * Acquire an address for the given id from this pool.
+	 *
+	 * @param id		the id to acquire an address for
+	 * @param requested	acquire this address, if possible
+	 * @return			the acquired address
+	 */
+	host_t* (*acquire_address)(mem_pool_t *this, identification_t *id,
+							   host_t *requested);
+
+	/**
+	 * Release a previously acquired address.
+	 *
+	 * @param address	the address to release
+	 * @param id		the id the address was assigned to
+	 * @return			TRUE, if the lease was found
+	 */
+	bool (*release_address)(mem_pool_t *this, host_t *address,
+							identification_t *id);
+
+	/**
+	 * Create an enumerator over the leases of this pool.
+	 *
+	 * Enumerator enumerates over
+	 * identification_t *id, host_t *address, bool online
+	 *
+	 * @return			enumerator
+	 */
+	enumerator_t* (*create_lease_enumerator)(mem_pool_t *this);
+
+	/**
+	 * Destroy a mem_pool_t instance.
+	 */
+	void (*destroy)(mem_pool_t *this);
+};
+
+/**
+ * Create an in-memory IP address pool.
+ *
+ * An empty pool just returns the requested address.
+ *
+ * @param name		name of this pool
+ * @param base		base address of this pool, NULL to create an empty pool
+ * @param bits		net mask
+ */
+mem_pool_t *mem_pool_create(char *name, host_t *base, int bits);
+
+#endif /** MEM_POOL_H_ @} */
+
diff --git a/src/libhydra/hydra.c b/src/libhydra/hydra.c
new file mode 100644
index 000000000..16a8193ea
--- /dev/null
+++ b/src/libhydra/hydra.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2010 Tobias Brunner
+ * 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 "hydra.h"
+
+#include <debug.h>
+
+typedef struct private_hydra_t private_hydra_t;
+
+/**
+ * Private additions to hydra_t.
+ */
+struct private_hydra_t {
+
+	/**
+	 * Public members of hydra_t.
+	 */
+	hydra_t public;
+};
+
+/**
+ * Single instance of hydra_t.
+ */
+hydra_t *hydra;
+
+/**
+ * Described in header.
+ */
+void libhydra_deinit()
+{
+	private_hydra_t *this = (private_hydra_t*)hydra;
+	this->public.attributes->destroy(this->public.attributes);
+	free((void*)this->public.daemon);
+	free(this);
+	hydra = NULL;
+}
+
+/**
+ * Described in header.
+ */
+bool libhydra_init(const char *daemon)
+{
+	private_hydra_t *this;
+
+	INIT(this,
+		.public = {
+			.attributes = attribute_manager_create(),
+			.daemon = strdup(daemon ?: "libhydra"),
+		},
+	);
+	hydra = &this->public;
+
+	if (lib->integrity &&
+		!lib->integrity->check(lib->integrity, "libhydra", libhydra_init))
+	{
+		DBG1(DBG_LIB, "integrity check of libhydra failed");
+		return FALSE;
+	}
+	return TRUE;
+}
+
diff --git a/src/libhydra/hydra.h b/src/libhydra/hydra.h
new file mode 100644
index 000000000..8670f3969
--- /dev/null
+++ b/src/libhydra/hydra.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2010 Tobias Brunner
+ * 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.
+ */
+
+/**
+ * @defgroup libhydra libhydra
+ *
+ * @defgroup attributes attributes
+ * @ingroup libhydra
+ *
+ * @defgroup hplugins plugins
+ * @ingroup libhydra
+ *
+ * @addtogroup libhydra
+ * @{
+ */
+
+#ifndef HYDRA_H_
+#define HYDRA_H_
+
+typedef struct hydra_t hydra_t;
+
+#include <attributes/attribute_manager.h>
+
+#include <library.h>
+
+/**
+ * IKE Daemon support object.
+ */
+struct hydra_t {
+
+	/**
+	 * manager for payload attributes
+	 */
+	attribute_manager_t *attributes;
+
+	/**
+	 * name of the daemon that initialized the library
+	 */
+	const char *daemon;
+};
+
+/**
+ * The single instance of hydra_t.
+ *
+ * Set between calls to libhydra_init() and libhydra_deinit() calls.
+ */
+extern hydra_t *hydra;
+
+/**
+ * Initialize libhydra.
+ *
+ * The daemon's name is used to load daemon-specific settings.
+ *
+ * @param daemon		name of the daemon that initializes the library
+ * @return				FALSE if integrity check failed
+ */
+bool libhydra_init(const char *daemon);
+
+/**
+ * Deinitialize libhydra.
+ */
+void libhydra_deinit();
+
+#endif /** HYDRA_H_ @}*/
diff --git a/src/libhydra/plugins/attr/Makefile.am b/src/libhydra/plugins/attr/Makefile.am
new file mode 100644
index 000000000..71401648e
--- /dev/null
+++ b/src/libhydra/plugins/attr/Makefile.am
@@ -0,0 +1,17 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \
+	-I$(top_srcdir)/src/libcharon
+
+AM_CFLAGS = -rdynamic
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-attr.la
+else
+plugin_LTLIBRARIES = libstrongswan-attr.la
+endif
+
+libstrongswan_attr_la_SOURCES = \
+	attr_plugin.h attr_plugin.c \
+	attr_provider.h attr_provider.c
+
+libstrongswan_attr_la_LDFLAGS = -module -avoid-version
diff --git a/src/libhydra/plugins/attr/Makefile.in b/src/libhydra/plugins/attr/Makefile.in
new file mode 100644
index 000000000..54aa64beb
--- /dev/null
+++ b/src/libhydra/plugins/attr/Makefile.in
@@ -0,0 +1,586 @@
+# Makefile.in generated by automake 1.11 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
+# Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+subdir = src/libhydra/plugins/attr
+DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/m4/config/libtool.m4 \
+	$(top_srcdir)/m4/config/ltoptions.m4 \
+	$(top_srcdir)/m4/config/ltsugar.m4 \
+	$(top_srcdir)/m4/config/ltversion.m4 \
+	$(top_srcdir)/m4/config/lt~obsolete.m4 \
+	$(top_srcdir)/m4/macros/with.m4 \
+	$(top_srcdir)/m4/macros/enable-disable.m4 \
+	$(top_srcdir)/configure.in
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+	$(ACLOCAL_M4)
+mkinstalldirs = $(install_sh) -d
+CONFIG_CLEAN_FILES =
+CONFIG_CLEAN_VPATH_FILES =
+am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
+am__vpath_adj = case $$p in \
+    $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
+    *) f=$$p;; \
+  esac;
+am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`;
+am__install_max = 40
+am__nobase_strip_setup = \
+  srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'`
+am__nobase_strip = \
+  for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||"
+am__nobase_list = $(am__nobase_strip_setup); \
+  for p in $$list; do echo "$$p $$p"; done | \
+  sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \
+  $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \
+    if (++n[$$2] == $(am__install_max)) \
+      { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \
+    END { for (dir in files) print dir, files[dir] }'
+am__base_list = \
+  sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
+  sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g'
+am__installdirs = "$(DESTDIR)$(plugindir)"
+LTLIBRARIES = $(noinst_LTLIBRARIES) $(plugin_LTLIBRARIES)
+libstrongswan_attr_la_LIBADD =
+am_libstrongswan_attr_la_OBJECTS = attr_plugin.lo attr_provider.lo
+libstrongswan_attr_la_OBJECTS = $(am_libstrongswan_attr_la_OBJECTS)
+libstrongswan_attr_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(libstrongswan_attr_la_LDFLAGS) $(LDFLAGS) -o $@
+@MONOLITHIC_FALSE@am_libstrongswan_attr_la_rpath = -rpath $(plugindir)
+@MONOLITHIC_TRUE@am_libstrongswan_attr_la_rpath =
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+	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+	--mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+	$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+CCLD = $(CC)
+LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+	--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+	$(LDFLAGS) -o $@
+SOURCES = $(libstrongswan_attr_la_SOURCES)
+DIST_SOURCES = $(libstrongswan_attr_la_SOURCES)
+ETAGS = etags
+CTAGS = ctags
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+libstrongswan_plugins = @libstrongswan_plugins@
+linux_headers = @linux_headers@
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+xml_LIBS = @xml_LIBS@
+INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \
+	-I$(top_srcdir)/src/libcharon
+
+AM_CFLAGS = -rdynamic
+@MONOLITHIC_TRUE@noinst_LTLIBRARIES = libstrongswan-attr.la
+@MONOLITHIC_FALSE@plugin_LTLIBRARIES = libstrongswan-attr.la
+libstrongswan_attr_la_SOURCES = \
+	attr_plugin.h attr_plugin.c \
+	attr_provider.h attr_provider.c
+
+libstrongswan_attr_la_LDFLAGS = -module -avoid-version
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu src/libhydra/plugins/attr/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu src/libhydra/plugins/attr/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+clean-noinstLTLIBRARIES:
+	-test -z "$(noinst_LTLIBRARIES)" || rm -f $(noinst_LTLIBRARIES)
+	@list='$(noinst_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+install-pluginLTLIBRARIES: $(plugin_LTLIBRARIES)
+	@$(NORMAL_INSTALL)
+	test -z "$(plugindir)" || $(MKDIR_P) "$(DESTDIR)$(plugindir)"
+	@list='$(plugin_LTLIBRARIES)'; test -n "$(plugindir)" || list=; \
+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(plugindir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(plugindir)"; \
+	}
+
+uninstall-pluginLTLIBRARIES:
+	@$(NORMAL_UNINSTALL)
+	@list='$(plugin_LTLIBRARIES)'; test -n "$(plugindir)" || list=; \
+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(plugindir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(plugindir)/$$f"; \
+	done
+
+clean-pluginLTLIBRARIES:
+	-test -z "$(plugin_LTLIBRARIES)" || rm -f $(plugin_LTLIBRARIES)
+	@list='$(plugin_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+libstrongswan-attr.la: $(libstrongswan_attr_la_OBJECTS) $(libstrongswan_attr_la_DEPENDENCIES) 
+	$(libstrongswan_attr_la_LINK) $(am_libstrongswan_attr_la_rpath) $(libstrongswan_attr_la_OBJECTS) $(libstrongswan_attr_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/attr_plugin.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/attr_provider.Plo@am__quote@
+
+.c.o:
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+@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(COMPILE) -c $<
+
+.c.obj:
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+@am__fastdepCC_FALSE@	$(COMPILE) -c `$(CYGPATH_W) '$<'`
+
+.c.lo:
+@am__fastdepCC_TRUE@	$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
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+@am__fastdepCC_FALSE@	$(LTCOMPILE) -c -o $@ $<
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	mkid -fID $$unique
+tags: TAGS
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	set x; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: CTAGS
+CTAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES)
+installdirs:
+	for dir in "$(DESTDIR)$(plugindir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
+	clean-pluginLTLIBRARIES mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
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+html: html-am
+
+html-am:
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+info: info-am
+
+info-am:
+
+install-data-am: install-pluginLTLIBRARIES
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+install-dvi: install-dvi-am
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+install-dvi-am:
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+install-exec-am:
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+install-html: install-html-am
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+install-pdf-am:
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+install-ps-am:
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+installcheck-am:
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+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
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+mostlyclean: mostlyclean-am
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+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
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+pdf: pdf-am
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+ps-am:
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+uninstall-am: uninstall-pluginLTLIBRARIES
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+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+	clean-libtool clean-noinstLTLIBRARIES clean-pluginLTLIBRARIES \
+	ctags distclean distclean-compile distclean-generic \
+	distclean-libtool distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-pluginLTLIBRARIES install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags uninstall uninstall-am \
+	uninstall-pluginLTLIBRARIES
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/libhydra/plugins/attr/attr_plugin.c b/src/libhydra/plugins/attr/attr_plugin.c
new file mode 100644
index 000000000..24c00bb44
--- /dev/null
+++ b/src/libhydra/plugins/attr/attr_plugin.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+#include "attr_plugin.h"
+#include "attr_provider.h"
+
+#include <hydra.h>
+
+typedef struct private_attr_plugin_t private_attr_plugin_t;
+
+/**
+ * private data of attr plugin
+ */
+struct private_attr_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	attr_plugin_t public;
+
+	/**
+	 * CFG attributes provider
+	 */
+	attr_provider_t *provider;
+};
+
+/**
+ * Implementation of plugin_t.destroy
+ */
+static void destroy(private_attr_plugin_t *this)
+{
+	hydra->attributes->remove_provider(hydra->attributes, &this->provider->provider);
+	this->provider->destroy(this->provider);
+	free(this);
+}
+
+/*
+ * see header file
+ */
+plugin_t *attr_plugin_create()
+{
+	private_attr_plugin_t *this = malloc_thing(private_attr_plugin_t);
+
+	this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
+
+	this->provider = attr_provider_create();
+	hydra->attributes->add_provider(hydra->attributes, &this->provider->provider);
+
+	return &this->public.plugin;
+}
+
diff --git a/src/libhydra/plugins/attr/attr_plugin.h b/src/libhydra/plugins/attr/attr_plugin.h
new file mode 100644
index 000000000..29fb33839
--- /dev/null
+++ b/src/libhydra/plugins/attr/attr_plugin.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+/**
+ * @defgroup attr attr
+ * @ingroup hplugins
+ *
+ * @defgroup attr_plugin attr_plugin
+ * @{ @ingroup attr
+ */
+
+#ifndef ATTR_PLUGIN_H_
+#define ATTR_PLUGIN_H_
+
+#include <plugins/plugin.h>
+
+typedef struct attr_plugin_t attr_plugin_t;
+
+/**
+ * Plugin providing configuration attribute through strongswan.conf.
+ */
+struct attr_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	plugin_t plugin;
+};
+
+#endif /** ATTR_PLUGIN_H_ @}*/
diff --git a/src/libhydra/plugins/attr/attr_provider.c b/src/libhydra/plugins/attr/attr_provider.c
new file mode 100644
index 000000000..9d6daa892
--- /dev/null
+++ b/src/libhydra/plugins/attr/attr_provider.c
@@ -0,0 +1,240 @@
+/*
+ * Copyright (C) 2010 Tobias Brunner
+ * Copyright (C) 2009 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.
+ */
+
+#include "attr_provider.h"
+
+#include <time.h>
+
+#include <hydra.h>
+#include <debug.h>
+#include <utils/linked_list.h>
+
+#define SERVER_MAX		2
+
+typedef struct private_attr_provider_t private_attr_provider_t;
+typedef struct attribute_entry_t attribute_entry_t;
+
+/**
+ * private data of attr_provider
+ */
+struct private_attr_provider_t {
+
+	/**
+	 * public functions
+	 */
+	attr_provider_t public;
+
+	/**
+	 * List of attributes, attribute_entry_t
+	 */
+	linked_list_t *attributes;
+};
+
+struct attribute_entry_t {
+	/** type of attribute */
+	configuration_attribute_type_t type;
+	/** attribute value */
+	chunk_t value;
+};
+
+/**
+ * convert enumerator value from attribute_entry
+ */
+static bool attr_enum_filter(void *null, attribute_entry_t **in,
+			configuration_attribute_type_t *type, void* none, chunk_t *value)
+{
+	*type = (*in)->type;
+	*value = (*in)->value;
+	return TRUE;
+}
+
+/**
+ * Implementation of attribute_provider_t.create_attribute_enumerator
+ */
+static enumerator_t* create_attribute_enumerator(private_attr_provider_t *this,
+											identification_t *id, host_t *vip)
+{
+	if (vip)
+	{
+		return enumerator_create_filter(
+						this->attributes->create_enumerator(this->attributes),
+						(void*)attr_enum_filter, NULL, NULL);
+	}
+	return enumerator_create_empty();
+}
+
+/**
+ * Implementation of attr_provider_t.destroy
+ */
+static void destroy(private_attr_provider_t *this)
+{
+	attribute_entry_t *entry;
+
+	while (this->attributes->remove_last(this->attributes,
+										 (void**)&entry) == SUCCESS)
+	{
+		free(entry->value.ptr);
+		free(entry);
+	}
+	this->attributes->destroy(this->attributes);
+	free(this);
+}
+
+/**
+ * Add an attribute entry to the list
+ */
+static void add_legacy_entry(private_attr_provider_t *this, char *key, int nr,
+							 configuration_attribute_type_t type)
+{
+	attribute_entry_t *entry;
+	host_t *host;
+	char *str;
+
+	str = lib->settings->get_str(lib->settings, "%s.%s%d", NULL, hydra->daemon,
+								 key, nr);
+	if (str)
+	{
+		host = host_create_from_string(str, 0);
+		if (host)
+		{
+			entry = malloc_thing(attribute_entry_t);
+
+			if (host->get_family(host) == AF_INET6)
+			{
+				switch (type)
+				{
+					case INTERNAL_IP4_DNS:
+						type = INTERNAL_IP6_DNS;
+						break;
+					case INTERNAL_IP4_NBNS:
+						type = INTERNAL_IP6_NBNS;
+						break;
+					default:
+						break;
+				}
+			}
+			entry->type = type;
+			entry->value = chunk_clone(host->get_address(host));
+			host->destroy(host);
+			this->attributes->insert_last(this->attributes, entry);
+		}
+	}
+}
+
+/**
+ * Key to attribute type mappings, for v4 and v6 attributes
+ */
+static struct {
+	char *name;
+	configuration_attribute_type_t v4;
+	configuration_attribute_type_t v6;
+} keys[] = {
+	{"address",		INTERNAL_IP4_ADDRESS,	INTERNAL_IP6_ADDRESS},
+	{"dns",			INTERNAL_IP4_DNS,		INTERNAL_IP6_DNS},
+	{"nbns",		INTERNAL_IP4_NBNS,		INTERNAL_IP6_NBNS},
+	{"dhcp",		INTERNAL_IP4_DHCP,		INTERNAL_IP6_DHCP},
+	{"netmask",		INTERNAL_IP4_NETMASK,	INTERNAL_IP6_NETMASK},
+	{"server",		INTERNAL_IP4_SERVER,	INTERNAL_IP6_SERVER},
+};
+
+/**
+ * Load (numerical) entries from the plugins.attr namespace
+ */
+static void load_entries(private_attr_provider_t *this)
+{
+	enumerator_t *enumerator, *tokens;
+	char *key, *value, *token;
+
+	enumerator = lib->settings->create_key_value_enumerator(lib->settings,
+											"%s.plugins.attr", hydra->daemon);
+	while (enumerator->enumerate(enumerator, &key, &value))
+	{
+		configuration_attribute_type_t type;
+		attribute_entry_t *entry;
+		host_t *host;
+		int i;
+
+		type = atoi(key);
+		tokens = enumerator_create_token(value, ",", " ");
+		while (tokens->enumerate(tokens, &token))
+		{
+			host = host_create_from_string(token, 0);
+			if (!host)
+			{
+				DBG1(DBG_CFG, "invalid host in key %s: %s", key, token);
+				continue;
+			}
+			if (!type)
+			{
+				for (i = 0; i < countof(keys); i++)
+				{
+					if (streq(key, keys[i].name))
+					{
+						if (host->get_family(host) == AF_INET)
+						{
+							type = keys[i].v4;
+						}
+						else
+						{
+							type = keys[i].v6;
+						}
+					}
+				}
+				if (!type)
+				{
+					DBG1(DBG_CFG, "mapping attribute type %s failed", key);
+					break;
+				}
+			}
+			entry = malloc_thing(attribute_entry_t);
+			entry->type = type;
+			entry->value = chunk_clone(host->get_address(host));
+			host->destroy(host);
+			this->attributes->insert_last(this->attributes, entry);
+		}
+		tokens->destroy(tokens);
+	}
+	enumerator->destroy(enumerator);
+}
+
+/*
+ * see header file
+ */
+attr_provider_t *attr_provider_create(database_t *db)
+{
+	private_attr_provider_t *this;
+	int i;
+
+	this = malloc_thing(private_attr_provider_t);
+
+	this->public.provider.acquire_address = (host_t*(*)(attribute_provider_t *this, char*, identification_t *, host_t *))return_null;
+	this->public.provider.release_address = (bool(*)(attribute_provider_t *this, char*,host_t *, identification_t*))return_false;
+	this->public.provider.create_attribute_enumerator = (enumerator_t*(*)(attribute_provider_t*, identification_t *id, host_t *vip))create_attribute_enumerator;
+	this->public.destroy = (void(*)(attr_provider_t*))destroy;
+
+	this->attributes = linked_list_create();
+
+	for (i = 1; i <= SERVER_MAX; i++)
+	{
+		add_legacy_entry(this, "dns", i, INTERNAL_IP4_DNS);
+		add_legacy_entry(this, "nbns", i, INTERNAL_IP4_NBNS);
+	}
+
+	load_entries(this);
+
+	return &this->public;
+}
+
diff --git a/src/libhydra/plugins/attr/attr_provider.h b/src/libhydra/plugins/attr/attr_provider.h
new file mode 100644
index 000000000..a41466718
--- /dev/null
+++ b/src/libhydra/plugins/attr/attr_provider.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+/**
+ * @defgroup attr_provider attr_provider
+ * @{ @ingroup attr
+ */
+
+#ifndef ATTR_PROVIDER_H_
+#define ATTR_PROVIDER_H_
+
+#include <attributes/attribute_provider.h>
+
+typedef struct attr_provider_t attr_provider_t;
+
+/**
+ * Provide configuration attributes through static strongswan.conf definition.
+ */
+struct attr_provider_t {
+
+	/**
+	 * Implements attribute provider interface
+	 */
+	attribute_provider_t provider;
+
+	/**
+	 * Destroy a attr_provider instance.
+	 */
+	void (*destroy)(attr_provider_t *this);
+};
+
+/**
+ * Create a attr_provider instance.
+ */
+attr_provider_t *attr_provider_create();
+
+#endif /** ATTR_PROVIDER @}*/
diff --git a/src/libhydra/plugins/attr_sql/Makefile.am b/src/libhydra/plugins/attr_sql/Makefile.am
new file mode 100644
index 000000000..376a8259c
--- /dev/null
+++ b/src/libhydra/plugins/attr_sql/Makefile.am
@@ -0,0 +1,23 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra
+
+AM_CFLAGS = \
+	-rdynamic \
+	-DPLUGINS=\""${libstrongswan_plugins}\""
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-attr-sql.la
+else
+plugin_LTLIBRARIES = libstrongswan-attr-sql.la
+endif
+
+libstrongswan_attr_sql_la_SOURCES = \
+	attr_sql_plugin.h attr_sql_plugin.c \
+	sql_attribute.h sql_attribute.c
+
+libstrongswan_attr_sql_la_LDFLAGS = -module -avoid-version
+
+ipsec_PROGRAMS = pool
+pool_SOURCES = pool.c
+pool_LDADD = $(top_builddir)/src/libstrongswan/libstrongswan.la
+pool.o :	$(top_builddir)/config.status
diff --git a/src/libhydra/plugins/attr_sql/Makefile.in b/src/libhydra/plugins/attr_sql/Makefile.in
new file mode 100644
index 000000000..99e97cefc
--- /dev/null
+++ b/src/libhydra/plugins/attr_sql/Makefile.in
@@ -0,0 +1,649 @@
+# Makefile.in generated by automake 1.11 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
+# Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
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+host_triplet = @host@
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+subdir = src/libhydra/plugins/attr_sql
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+am_libstrongswan_attr_sql_la_OBJECTS = attr_sql_plugin.lo \
+	sql_attribute.lo
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+	$(am_libstrongswan_attr_sql_la_OBJECTS)
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+	$(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \
+	$(AM_CFLAGS) $(CFLAGS) $(libstrongswan_attr_sql_la_LDFLAGS) \
+	$(LDFLAGS) -o $@
+@MONOLITHIC_FALSE@am_libstrongswan_attr_sql_la_rpath = -rpath \
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+linux_headers = @linux_headers@
+localedir = @localedir@
+localstatedir = @localstatedir@
+lt_ECHO = @lt_ECHO@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+nm_CFLAGS = @nm_CFLAGS@
+nm_LIBS = @nm_LIBS@
+nm_ca_dir = @nm_ca_dir@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+piddir = @piddir@
+plugindir = @plugindir@
+pluto_plugins = @pluto_plugins@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+random_device = @random_device@
+resolv_conf = @resolv_conf@
+routing_table = @routing_table@
+routing_table_prio = @routing_table_prio@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+strongswan_conf = @strongswan_conf@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+urandom_device = @urandom_device@
+xml_CFLAGS = @xml_CFLAGS@
+xml_LIBS = @xml_LIBS@
+INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra
+AM_CFLAGS = \
+	-rdynamic \
+	-DPLUGINS=\""${libstrongswan_plugins}\""
+
+@MONOLITHIC_TRUE@noinst_LTLIBRARIES = libstrongswan-attr-sql.la
+@MONOLITHIC_FALSE@plugin_LTLIBRARIES = libstrongswan-attr-sql.la
+libstrongswan_attr_sql_la_SOURCES = \
+	attr_sql_plugin.h attr_sql_plugin.c \
+	sql_attribute.h sql_attribute.c
+
+libstrongswan_attr_sql_la_LDFLAGS = -module -avoid-version
+pool_SOURCES = pool.c
+pool_LDADD = $(top_builddir)/src/libstrongswan/libstrongswan.la
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu src/libhydra/plugins/attr_sql/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu src/libhydra/plugins/attr_sql/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+clean-noinstLTLIBRARIES:
+	-test -z "$(noinst_LTLIBRARIES)" || rm -f $(noinst_LTLIBRARIES)
+	@list='$(noinst_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+install-pluginLTLIBRARIES: $(plugin_LTLIBRARIES)
+	@$(NORMAL_INSTALL)
+	test -z "$(plugindir)" || $(MKDIR_P) "$(DESTDIR)$(plugindir)"
+	@list='$(plugin_LTLIBRARIES)'; test -n "$(plugindir)" || list=; \
+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(plugindir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(plugindir)"; \
+	}
+
+uninstall-pluginLTLIBRARIES:
+	@$(NORMAL_UNINSTALL)
+	@list='$(plugin_LTLIBRARIES)'; test -n "$(plugindir)" || list=; \
+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(plugindir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(plugindir)/$$f"; \
+	done
+
+clean-pluginLTLIBRARIES:
+	-test -z "$(plugin_LTLIBRARIES)" || rm -f $(plugin_LTLIBRARIES)
+	@list='$(plugin_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+libstrongswan-attr-sql.la: $(libstrongswan_attr_sql_la_OBJECTS) $(libstrongswan_attr_sql_la_DEPENDENCIES) 
+	$(libstrongswan_attr_sql_la_LINK) $(am_libstrongswan_attr_sql_la_rpath) $(libstrongswan_attr_sql_la_OBJECTS) $(libstrongswan_attr_sql_la_LIBADD) $(LIBS)
+install-ipsecPROGRAMS: $(ipsec_PROGRAMS)
+	@$(NORMAL_INSTALL)
+	test -z "$(ipsecdir)" || $(MKDIR_P) "$(DESTDIR)$(ipsecdir)"
+	@list='$(ipsec_PROGRAMS)'; test -n "$(ipsecdir)" || list=; \
+	for p in $$list; do echo "$$p $$p"; done | \
+	sed 's/$(EXEEXT)$$//' | \
+	while read p p1; do if test -f $$p || test -f $$p1; \
+	  then echo "$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n;h' -e 's|.*|.|' \
+	    -e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \
+	sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) files[d] = files[d] " " $$1; \
+	    else { print "f", $$3 "/" $$4, $$1; } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	    if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	    test -z "$$files" || { \
+	    echo " $(INSTALL_PROGRAM_ENV) $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL_PROGRAM) $$files '$(DESTDIR)$(ipsecdir)$$dir'"; \
+	    $(INSTALL_PROGRAM_ENV) $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL_PROGRAM) $$files "$(DESTDIR)$(ipsecdir)$$dir" || exit $$?; \
+	    } \
+	; done
+
+uninstall-ipsecPROGRAMS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(ipsec_PROGRAMS)'; test -n "$(ipsecdir)" || list=; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	  sed -e 'h;s,^.*/,,;s/$(EXEEXT)$$//;$(transform)' \
+	      -e 's/$$/$(EXEEXT)/' `; \
+	test -n "$$list" || exit 0; \
+	echo " ( cd '$(DESTDIR)$(ipsecdir)' && rm -f" $$files ")"; \
+	cd "$(DESTDIR)$(ipsecdir)" && rm -f $$files
+
+clean-ipsecPROGRAMS:
+	@list='$(ipsec_PROGRAMS)'; test -n "$$list" || exit 0; \
+	echo " rm -f" $$list; \
+	rm -f $$list || exit $$?; \
+	test -n "$(EXEEXT)" || exit 0; \
+	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
+	echo " rm -f" $$list; \
+	rm -f $$list
+pool$(EXEEXT): $(pool_OBJECTS) $(pool_DEPENDENCIES) 
+	@rm -f pool$(EXEEXT)
+	$(LINK) $(pool_OBJECTS) $(pool_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/attr_sql_plugin.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/pool.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sql_attribute.Plo@am__quote@
+
+.c.o:
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
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+
+.c.obj:
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+.c.lo:
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+@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
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+@am__fastdepCC_FALSE@	$(LTCOMPILE) -c -o $@ $<
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+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	mkid -fID $$unique
+tags: TAGS
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	set x; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: CTAGS
+CTAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES) $(PROGRAMS)
+installdirs:
+	for dir in "$(DESTDIR)$(plugindir)" "$(DESTDIR)$(ipsecdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
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+install-am: all-am
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+installcheck: installcheck-am
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+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-ipsecPROGRAMS clean-libtool \
+	clean-noinstLTLIBRARIES clean-pluginLTLIBRARIES mostlyclean-am
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+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
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+	-rm -rf ./$(DEPDIR)
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+	mostlyclean-libtool
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+.MAKE: install-am install-strip
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+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
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+	install-info install-info-am install-ipsecPROGRAMS install-man \
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+	maintainer-clean-generic mostlyclean mostlyclean-compile \
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+	tags uninstall uninstall-am uninstall-ipsecPROGRAMS \
+	uninstall-pluginLTLIBRARIES
+
+pool.o :	$(top_builddir)/config.status
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/libhydra/plugins/attr_sql/attr_sql_plugin.c b/src/libhydra/plugins/attr_sql/attr_sql_plugin.c
new file mode 100644
index 000000000..70e7a2247
--- /dev/null
+++ b/src/libhydra/plugins/attr_sql/attr_sql_plugin.c
@@ -0,0 +1,88 @@
+/*
+ * 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.
+ */
+
+#include <hydra.h>
+#include <debug.h>
+
+#include "attr_sql_plugin.h"
+#include "sql_attribute.h"
+
+typedef struct private_attr_sql_plugin_t private_attr_sql_plugin_t;
+
+/**
+ * private data of attr_sql plugin
+ */
+struct private_attr_sql_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	attr_sql_plugin_t public;
+
+	/**
+	 * database connection instance
+	 */
+	database_t *db;
+
+	/**
+	 * configuration attributes
+	 */
+	sql_attribute_t *attribute;
+
+};
+
+/**
+ * Implementation of plugin_t.destroy
+ */
+static void destroy(private_attr_sql_plugin_t *this)
+{
+	hydra->attributes->remove_provider(hydra->attributes, &this->attribute->provider);
+	this->attribute->destroy(this->attribute);
+	this->db->destroy(this->db);
+	free(this);
+}
+
+/*
+ * see header file
+ */
+plugin_t *attr_sql_plugin_create()
+{
+	char *uri;
+	private_attr_sql_plugin_t *this;
+
+	uri = lib->settings->get_str(lib->settings, "libhydra.plugins.attr-sql.database", NULL);
+	if (!uri)
+	{
+		DBG1(DBG_CFG, "attr-sql plugin: database URI not set");
+		return NULL;
+	}
+
+	this = malloc_thing(private_attr_sql_plugin_t);
+
+	this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
+
+	this->db = lib->db->create(lib->db, uri);
+	if (!this->db)
+	{
+		DBG1(DBG_CFG, "attr-sql plugin failed to connect to database");
+		free(this);
+		return NULL;
+	}
+	this->attribute = sql_attribute_create(this->db);
+	hydra->attributes->add_provider(hydra->attributes, &this->attribute->provider);
+
+	return &this->public.plugin;
+}
+
diff --git a/src/libhydra/plugins/attr_sql/attr_sql_plugin.h b/src/libhydra/plugins/attr_sql/attr_sql_plugin.h
new file mode 100644
index 000000000..ba85a6b28
--- /dev/null
+++ b/src/libhydra/plugins/attr_sql/attr_sql_plugin.h
@@ -0,0 +1,42 @@
+/*
+ * 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.
+ */
+
+/**
+ * @defgroup attr_sql attr_sql
+ * @ingroup hplugins
+ *
+ * @defgroup sql_plugin sql_plugin
+ * @{ @ingroup attr_sql
+ */
+
+#ifndef ATTR_SQL_PLUGIN_H_
+#define ATTR_SQL_PLUGIN_H_
+
+#include <plugins/plugin.h>
+
+typedef struct attr_sql_plugin_t attr_sql_plugin_t;
+
+/**
+ * SQL database attribute configuration plugin
+ */
+struct attr_sql_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	plugin_t plugin;
+};
+
+#endif /** ATTR_SQL_PLUGIN_H_ @}*/
diff --git a/src/libhydra/plugins/attr_sql/pool.c b/src/libhydra/plugins/attr_sql/pool.c
new file mode 100644
index 000000000..fed89fc51
--- /dev/null
+++ b/src/libhydra/plugins/attr_sql/pool.c
@@ -0,0 +1,1402 @@
+/*
+ * 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.
+ */
+
+#define _GNU_SOURCE
+#include <getopt.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <time.h>
+#include <string.h>
+#include <errno.h>
+
+#include <debug.h>
+#include <library.h>
+#include <utils/host.h>
+#include <utils/identification.h>
+#include <attributes/attributes.h>
+
+/**
+ * global database handle
+ */
+database_t *db;
+
+/**
+ * --start/--end/--server addresses of various subcommands
+ */
+host_t *start = NULL, *end = NULL, *server = NULL;
+
+/**
+ * whether --add should --replace an existing pool
+ */
+bool replace_pool = FALSE;
+
+/**
+ * forward declarations
+ */
+static void del(char *name);
+static void do_args(int argc, char *argv[]);
+
+/**
+ * nesting counter for database transaction functions
+ */
+int nested_transaction = 0;
+
+/**
+ * start a database transaction
+ */
+static void begin_transaction()
+{
+	if (db->get_driver(db) == DB_SQLITE)
+	{
+		if (!nested_transaction)
+		{
+			db->execute(db, NULL, "BEGIN EXCLUSIVE TRANSACTION");
+		}
+		++nested_transaction;
+	}
+}
+
+/**
+ * commit a database transaction
+ */
+static void commit_transaction()
+{
+	if (db->get_driver(db) == DB_SQLITE)
+	{
+		--nested_transaction;
+		if (!nested_transaction)
+		{
+			db->execute(db, NULL, "END TRANSACTION");
+		}
+	}
+}
+
+/**
+ * Create or replace a pool by name
+ */
+static u_int create_pool(char *name, chunk_t start, chunk_t end, int timeout)
+{
+	enumerator_t *e;
+	int pool;
+
+	e = db->query(db, "SELECT id FROM pools WHERE name = ?",
+			DB_TEXT, name, DB_UINT);
+	if (e && e->enumerate(e, &pool))
+	{
+		if (replace_pool == FALSE)
+		{
+			fprintf(stderr, "pool '%s' exists.\n", name);
+			e->destroy(e);
+			exit(EXIT_FAILURE);
+		}
+		del(name);
+	}
+	DESTROY_IF(e);
+	if (db->execute(db, &pool,
+			"INSERT INTO pools (name, start, end, timeout) VALUES (?, ?, ?, ?)",
+			DB_TEXT, name, DB_BLOB, start, DB_BLOB, end,
+			DB_INT, timeout*3600) != 1)
+	{
+		fprintf(stderr, "creating pool failed.\n");
+		exit(EXIT_FAILURE);
+	}
+
+	return pool;
+}
+
+/**
+ * instead of a pool handle a DNS or NBNS attribute
+ */
+static bool is_attribute(char *name)
+{
+	return strcaseeq(name, "dns") || strcaseeq(name, "nbns") ||
+		   strcaseeq(name, "wins");
+}
+
+/**
+ * determine configuration attribute type
+ */
+static configuration_attribute_type_t get_attribute_type(char *name, host_t* addr)
+{
+	if (strcaseeq(name, "dns"))
+	{
+		return (addr->get_family(addr) == AF_INET) ? INTERNAL_IP4_DNS :
+													 INTERNAL_IP6_DNS;
+	}
+	else
+	{
+		return (addr->get_family(addr) == AF_INET) ? INTERNAL_IP4_NBNS :
+													 INTERNAL_IP6_NBNS;
+	}
+}
+
+/**
+ * calculate the size of a pool using start and end address chunk
+ */
+static u_int get_pool_size(chunk_t start, chunk_t end)
+{
+	u_int *start_ptr, *end_ptr;
+
+	if (start.len < sizeof(u_int) || end.len < sizeof(u_int))
+	{
+		return 0;
+	}
+	start_ptr = (u_int*)(start.ptr + start.len - sizeof(u_int));
+	end_ptr = (u_int*)(end.ptr + end.len - sizeof(u_int));
+	return ntohl(*end_ptr) -  ntohl(*start_ptr) + 1;
+}
+
+/**
+ * print usage info
+ */
+static void usage(void)
+{
+	printf("\
+Usage:\n\
+  ipsec pool --status|--add|--replace|--del|--resize|--purge [options]\n\
+  \n\
+  ipsec pool --status\n\
+    Show a list of installed pools with statistics.\n\
+  \n\
+  ipsec pool --add <name> --start <start> --end <end> [--timeout <timeout>]\n\
+  ipsec pool --replace <name> --start <start> --end <end> [--timeout <timeout>]\n\
+    Add a new pool to or replace an existing pool in the database.\n\
+      name:    Name of the pool, as used in ipsec.conf rightsourceip=%%name\n\
+      start:   Start address of the pool\n\
+      end:     End address of the pool\n\
+      timeout: Lease time in hours, 0 for static leases\n\
+  \n\
+  ipsec pool --add <name> --addresses <file> [--timeout <timeout>]\n\
+  ipsec pool --replace <name> --addresses <file> [--timeout <timeout>]\n\
+    Add a new pool to or replace an existing pool in the database.\n\
+      name:    Name of the pool, as used in ipsec.conf rightsourceip=%%name\n\
+      file:    File newline separated addresses for the pool are read from.\n\
+               Optionally each address can be pre-assigned to a roadwarrior\n\
+               identity, e.g. 10.231.14.2=alice@strongswan.org.\n\
+               If a - (hyphen) is given instead of a file name, the addresses\n\
+               are read from STDIN. Reading addresses stops at the end of file\n\
+               or an empty line. Pools created with this command can not be\n\
+               resized.\n\
+      timeout: Lease time in hours, 0 for static leases\n\
+  \n\
+  ipsec pool --add dns|nbns|wins --server <server>\n\
+    Add a new DNS or NBNS server to the database.\n\
+      server:  IP address of the name server\n\
+  \n\
+  ipsec pool --del <name>\n\
+    Delete a pool from the database.\n\
+      name:    Name of the pool to delete\n\
+  \n\
+  ipsec pool --del dns|nbns|wins [--server <server>]\n\
+    Delete a specific or all DNS or NBNS servers from the database.\n\
+      server:  IP address of the name server to delete\n\
+  \n\
+  ipsec pool --resize <name> --end <end>\n\
+    Grow or shrink an existing pool.\n\
+      name:    Name of the pool to resize\n\
+      end:     New end address for the pool\n\
+  \n\
+  ipsec pool --leases [--filter <filter>] [--utc]\n\
+    Show lease information using filters:\n\
+      filter:  Filter string containing comma separated key=value filters,\n\
+               e.g. id=alice@strongswan.org,addr=1.1.1.1\n\
+                  pool:   name of the pool\n\
+                  id:     assigned identity of the lease\n\
+                  addr:   lease IP address\n\
+                  tstamp: UNIX timestamp when lease was valid, as integer\n\
+                  status: status of the lease: online|valid|expired\n\
+      utc:    Show times in UTC instead of local time\n\
+  \n\
+  ipsec pool --purge <name>\n\
+    Delete lease history of a pool:\n\
+      name:    Name of the pool to purge\n\
+  \n\
+  ipsec pool --batch <file>\n\
+    Read commands from a file and execute them atomically.\n\
+      file:    File to read the newline separated commands from. Commands\n\
+               appear as they are written on the command line, e.g.\n\
+                  --replace mypool --start 10.0.0.1 --end 10.0.0.254\n\
+                  --del dns\n\
+                  --add dns --server 10.1.0.1\n\
+                  --add dns --server 10.1.1.1\n\
+               If a - (hyphen) is given as a file name, the commands are read\n\
+               from STDIN. Readin commands stops at the end of file. Empty\n\
+               lines are ignored. The file may not contain a --batch command.\n\
+  \n");
+}
+
+/**
+ * ipsec pool --status - show pool overview
+ */
+static void status(void)
+{
+	enumerator_t *ns, *pool, *lease;
+	host_t *server;
+	chunk_t value;
+	bool found = FALSE;
+
+	/* enumerate IPv4 DNS servers */
+	ns = db->query(db, "SELECT value FROM attributes WHERE type = ?",
+				   DB_INT, INTERNAL_IP4_DNS, DB_BLOB);
+	if (ns)
+	{
+		while (ns->enumerate(ns, &value))
+		{
+			if (!found)
+			{
+				printf("dns servers:");
+				found = TRUE;
+			}
+			server = host_create_from_chunk(AF_INET, value, 0);
+			if (server)
+			{
+				printf(" %H", server);
+				server->destroy(server);
+			}
+		}
+		ns->destroy(ns);
+	}
+
+	/* enumerate IPv6 DNS servers */
+	ns = db->query(db, "SELECT value FROM attributes WHERE type = ?",
+				   DB_INT, INTERNAL_IP6_DNS, DB_BLOB);
+	if (ns)
+	{
+		while (ns->enumerate(ns, &value))
+		{
+			if (!found)
+			{
+				printf("dns servers:");
+				found = TRUE;
+			}
+			server = host_create_from_chunk(AF_INET6, value, 0);
+			if (server)
+			{
+				printf(" %H", server);
+				server->destroy(server);
+			}
+		}
+		ns->destroy(ns);
+	}
+	if (found)
+	{
+		printf("\n");
+	}
+	else
+	{
+		printf("no dns servers found.\n");
+	}
+	found = FALSE;
+
+	/* enumerate IPv4 NBNS servers */
+	ns = db->query(db, "SELECT value FROM attributes WHERE type = ?",
+				   DB_INT, INTERNAL_IP4_NBNS, DB_BLOB);
+	if (ns)
+	{
+		while (ns->enumerate(ns, &value))
+		{
+			if (!found)
+			{
+				printf("nbns servers:");
+				found = TRUE;
+			}
+			server = host_create_from_chunk(AF_INET, value, 0);
+			if (server)
+			{
+				printf(" %H", server);
+				server->destroy(server);
+			}
+		}
+		ns->destroy(ns);
+	}
+
+	/* enumerate IPv6 NBNS servers */
+	ns = db->query(db, "SELECT value FROM attributes WHERE type = ?",
+				   DB_INT, INTERNAL_IP6_NBNS, DB_BLOB);
+	if (ns)
+	{
+		while (ns->enumerate(ns, &value))
+		{
+			if (!found)
+			{
+				printf("nbns servers:");
+				found = TRUE;
+			}
+			server = host_create_from_chunk(AF_INET6, value, 0);
+			if (server)
+			{
+				printf(" %H", server);
+				server->destroy(server);
+			}
+		}
+		ns->destroy(ns);
+	}
+	if (found)
+	{
+		printf("\n");
+	}
+	else
+	{
+		printf("no nbns servers found.\n");
+	}
+	found = FALSE;
+
+	pool = db->query(db, "SELECT id, name, start, end, timeout FROM pools",
+					 DB_INT, DB_TEXT, DB_BLOB, DB_BLOB, DB_UINT);
+	if (pool)
+	{
+		char *name;
+		chunk_t start_chunk, end_chunk;
+		host_t *start, *end;
+		u_int id, timeout, online = 0, used = 0, size = 0;
+
+		while (pool->enumerate(pool, &id, &name,
+							   &start_chunk, &end_chunk, &timeout))
+		{
+			if (!found)
+			{
+				printf("%8s %15s %15s %8s %6s %11s %11s\n", "name", "start",
+					   "end", "timeout", "size", "online", "usage");
+				found = TRUE;
+			}
+
+			start = host_create_from_chunk(AF_UNSPEC, start_chunk, 0);
+			end = host_create_from_chunk(AF_UNSPEC, end_chunk, 0);
+			if (start->is_anyaddr(start) && end->is_anyaddr(end))
+			{
+				printf("%8s %15s %15s ", name, "n/a", "n/a");
+			}
+			else
+			{
+				printf("%8s %15H %15H ", name, start, end);
+			}
+			if (timeout)
+			{
+				printf("%7dh ", timeout/3600);
+			}
+			else
+			{
+				printf("%8s ", "static");
+			}
+			/* get total number of hosts in the pool */
+			lease = db->query(db, "SELECT COUNT(*) FROM addresses "
+							  "WHERE pool = ?", DB_UINT, id, DB_INT);
+			if (lease)
+			{
+				lease->enumerate(lease, &size);
+				lease->destroy(lease);
+			}
+			printf("%6d ", size);
+			/* get number of online hosts */
+			lease = db->query(db, "SELECT COUNT(*) FROM addresses "
+							  "WHERE pool = ? AND released = 0",
+							  DB_UINT, id, DB_INT);
+			if (lease)
+			{
+				lease->enumerate(lease, &online);
+				lease->destroy(lease);
+			}
+			printf("%5d (%2d%%) ", online, online*100/size);
+			/* get number of online or valid lieases */
+			lease = db->query(db, "SELECT COUNT(*) FROM addresses "
+							  "WHERE addresses.pool = ? "
+							  "AND ((? AND acquired != 0) "
+							  "     OR released = 0 OR released > ?) ",
+							  DB_UINT, id, DB_UINT, !timeout,
+							  DB_UINT, time(NULL) - timeout, DB_UINT);
+			if (lease)
+			{
+				lease->enumerate(lease, &used);
+				lease->destroy(lease);
+			}
+			printf("%5d (%2d%%) ", used, used*100/size);
+
+			printf("\n");
+			DESTROY_IF(start);
+			DESTROY_IF(end);
+		}
+		pool->destroy(pool);
+	}
+	if (!found)
+	{
+		printf("no pools found.\n");
+	}
+}
+
+/**
+ * ipsec pool --add - add a new pool
+ */
+static void add(char *name, host_t *start, host_t *end, int timeout)
+{
+	chunk_t start_addr, end_addr, cur_addr;
+	u_int id, count;
+
+	start_addr = start->get_address(start);
+	end_addr = end->get_address(end);
+	cur_addr = chunk_clonea(start_addr);
+	count = get_pool_size(start_addr, end_addr);
+
+	if (start_addr.len != end_addr.len ||
+		memcmp(start_addr.ptr, end_addr.ptr, start_addr.len) > 0)
+	{
+		fprintf(stderr, "invalid start/end pair specified.\n");
+		exit(EXIT_FAILURE);
+	}
+	id = create_pool(name, start_addr, end_addr, timeout);
+	printf("allocating %d addresses... ", count);
+	fflush(stdout);
+	/* run population in a transaction for sqlite */
+	begin_transaction();
+	while (TRUE)
+	{
+		db->execute(db, NULL,
+			"INSERT INTO addresses (pool, address, identity, acquired, released) "
+			"VALUES (?, ?, ?, ?, ?)",
+			DB_UINT, id, DB_BLOB, cur_addr,	DB_UINT, 0, DB_UINT, 0, DB_UINT, 1);
+		if (chunk_equals(cur_addr, end_addr))
+		{
+			break;
+		}
+		chunk_increment(cur_addr);
+	}
+	commit_transaction();
+	printf("done.\n", count);
+}
+
+static bool add_address(u_int pool_id, char *address_str, int *family)
+{
+	host_t *address;
+	int user_id = 0;
+
+	char *pos_eq = strchr(address_str, '=');
+	if (pos_eq != NULL)
+	{
+		enumerator_t *e;
+		identification_t *id = identification_create_from_string(pos_eq + 1);
+
+		/* look for peer identity in the identities table */
+		e = db->query(db,
+				"SELECT id FROM identities WHERE type = ? AND data = ?",
+				DB_INT, id->get_type(id), DB_BLOB, id->get_encoding(id),
+				DB_UINT);
+
+		if (!e || !e->enumerate(e, &user_id))
+		{
+			/* not found, insert new one */
+			if (db->execute(db, &user_id,
+					"INSERT INTO identities (type, data) VALUES (?, ?)",
+					DB_INT, id->get_type(id),
+					DB_BLOB, id->get_encoding(id)) != 1)
+			{
+				fprintf(stderr, "creating id '%s' failed.\n", pos_eq + 1);
+				return FALSE;
+			}
+		}
+		DESTROY_IF(e);
+		id->destroy(id);
+		*pos_eq = '\0';
+	}
+
+	address = host_create_from_string(address_str, 0);
+	if (address == NULL)
+	{
+		fprintf(stderr, "invalid address '%s'.\n", address_str);
+		return FALSE;
+	}
+	if (family && *family && *family != address->get_family(address))
+	{
+		fprintf(stderr, "invalid address family '%s'.\n", address_str);
+		return FALSE;
+	}
+
+	if (db->execute(db, NULL,
+			"INSERT INTO addresses "
+			"(pool, address, identity, acquired, released) "
+			"VALUES (?, ?, ?, ?, ?)",
+			DB_UINT, pool_id, DB_BLOB, address->get_address(address),
+			DB_UINT, user_id, DB_UINT, 0, DB_UINT, 1) != 1)
+	{
+		fprintf(stderr, "inserting address '%s' failed.\n", address_str);
+		return FALSE;
+	}
+	*family = address->get_family(address);
+	address->destroy(address);
+
+	return TRUE;
+}
+
+static void add_addresses(char *pool, char *path, int timeout)
+{
+	u_int pool_id, count = 0;
+	int family = AF_UNSPEC;
+	char address_str[512];
+	host_t *addr;
+	FILE *file;
+
+	/* run population in a transaction for sqlite */
+	begin_transaction();
+
+	addr = host_create_from_string("%any", 0);
+	pool_id = create_pool(pool, addr->get_address(addr),
+						  addr->get_address(addr), timeout);
+	addr->destroy(addr);
+
+	file = (strcmp(path, "-") == 0 ? stdin : fopen(path, "r"));
+	if (file == NULL)
+	{
+		fprintf(stderr, "opening '%s' failed: %s\n", path, strerror(errno));
+		exit(-1);
+	}
+
+	printf("starting allocation... ");
+	fflush(stdout);
+
+	while (fgets(address_str, sizeof(address_str), file))
+	{
+		size_t addr_len = strlen(address_str);
+		char *last_chr = address_str + addr_len - 1;
+		if (*last_chr == '\n')
+		{
+			if (addr_len == 1)
+			{	/* end of input */
+				break;
+			}
+			*last_chr = '\0';
+		}
+		if (add_address(pool_id, address_str, &family) == FALSE)
+		{
+			exit(EXIT_FAILURE);
+		}
+		++count;
+	}
+
+	if (file != stdin)
+	{
+		fclose(file);
+	}
+
+	commit_transaction();
+
+	printf("%d addresses done.\n", count);
+}
+
+/**
+ * ipsec pool --add dns|nbns|wins - add a DNS or NBNS server entry
+ */
+static void add_attr(char *name, host_t *server)
+{
+	configuration_attribute_type_t type;
+	chunk_t value;
+
+	type = get_attribute_type(name, server);
+	value = server->get_address(server);
+	if (db->execute(db, NULL,
+			"INSERT INTO attributes (type, value) VALUES (?, ?)",
+			DB_INT, type, DB_BLOB, value) != 1)
+	{
+		fprintf(stderr, "adding %s server %H failed.\n", name, server);
+		exit(EXIT_FAILURE);
+	}
+	printf("added %s server %H\n", name, server);
+}
+
+/**
+ * ipsec pool --del - delete a pool
+ */
+static void del(char *name)
+{
+	enumerator_t *query;
+	u_int id;
+	bool found = FALSE;
+
+	query = db->query(db, "SELECT id FROM pools WHERE name = ?",
+					  DB_TEXT, name, DB_UINT);
+	if (!query)
+	{
+		fprintf(stderr, "deleting pool failed.\n");
+		exit(EXIT_FAILURE);
+	}
+	while (query->enumerate(query, &id))
+	{
+		found = TRUE;
+		if (db->execute(db, NULL,
+				"DELETE FROM leases WHERE address IN ("
+				" SELECT id FROM addresses WHERE pool = ?)", DB_UINT, id) < 0 ||
+			db->execute(db, NULL,
+				"DELETE FROM addresses WHERE pool = ?", DB_UINT, id) < 0 ||
+			db->execute(db, NULL,
+				"DELETE FROM pools WHERE id = ?", DB_UINT, id) < 0)
+		{
+			fprintf(stderr, "deleting pool failed.\n");
+			query->destroy(query);
+			exit(EXIT_FAILURE);
+		}
+	}
+	query->destroy(query);
+	if (!found)
+	{
+		fprintf(stderr, "pool '%s' not found.\n", name);
+		exit(EXIT_FAILURE);
+	}
+}
+
+/**
+ * ipsec pool --del dns|nbns|wins - delete a DNS or NBNS server entry
+ */
+static void del_attr(char *name, host_t *server)
+{
+	configuration_attribute_type_t type;
+	chunk_t value;
+	u_int id;
+	enumerator_t *query;
+	bool found = FALSE;
+
+	if (server)
+	{
+		type = get_attribute_type(name, server);
+		value = server->get_address(server);
+		query = db->query(db,
+					"SELECT id, type, value FROM attributes "
+					"WHERE type = ? AND value = ?",
+					DB_INT, type, DB_BLOB, value,
+					DB_UINT, DB_INT, DB_BLOB);
+	}
+	else
+	{
+		configuration_attribute_type_t type_ip4, type_ip6;
+
+		if (strcaseeq(name, "dns"))
+		{
+			type_ip4 = INTERNAL_IP4_DNS;
+			type_ip6 = INTERNAL_IP6_DNS;
+		}
+		else
+		{
+			type_ip4 = INTERNAL_IP4_NBNS;
+			type_ip6 = INTERNAL_IP6_NBNS;
+		}
+
+		query = db->query(db,
+					"SELECT id, type, value FROM attributes "
+					"WHERE type = ? OR type = ?",
+					DB_INT, type_ip4, DB_INT, type_ip6,
+					DB_UINT, DB_INT, DB_BLOB);
+	}
+	if (!query)
+	{
+		fprintf(stderr, "deleting %s servers failed.\n", name);
+		exit(EXIT_FAILURE);
+	}
+
+	while (query->enumerate(query, &id, &type, &value))
+	{
+		int family;
+		host_t *host;
+
+		found = TRUE;
+		family = (type == INTERNAL_IP4_DNS || type == INTERNAL_IP4_NBNS) ?
+				  AF_INET : AF_INET6;
+		host = host_create_from_chunk(family, value, 0);
+		if (db->execute(db, NULL,
+					"DELETE FROM attributes WHERE id = ?",
+					 DB_UINT, id) != 1)
+		{
+			fprintf(stderr, "deleting %s server %H failed\n", name, host);
+			query->destroy(query);
+			DESTROY_IF(host);
+			exit(EXIT_FAILURE);
+		}
+		printf("deleted %s server %H\n", name, host);
+		DESTROY_IF(host);
+	}
+	query->destroy(query);
+
+	if (!found && server)
+	{
+		printf("%s server %H not found\n", name, server);
+		exit(EXIT_FAILURE);
+	}
+	else if (!found)
+	{
+		printf("no %s servers found\n", name);
+	}
+}
+
+/**
+ * ipsec pool --resize - resize a pool
+ */
+static void resize(char *name, host_t *end)
+{
+	enumerator_t *query;
+	chunk_t old_addr, new_addr, cur_addr;
+	u_int id, count;
+	host_t *old_end;
+
+	new_addr = end->get_address(end);
+
+	query = db->query(db, "SELECT id, end FROM pools WHERE name = ?",
+					  DB_TEXT, name, DB_UINT, DB_BLOB);
+	if (!query || !query->enumerate(query, &id, &old_addr))
+	{
+		DESTROY_IF(query);
+		fprintf(stderr, "resizing pool failed.\n");
+		exit(EXIT_FAILURE);
+	}
+	if (old_addr.len != new_addr.len ||
+		memcmp(new_addr.ptr, old_addr.ptr, old_addr.len) < 0)
+	{
+		fprintf(stderr, "shrinking of pools not supported.\n");
+		query->destroy(query);
+		exit(EXIT_FAILURE);
+	}
+	cur_addr = chunk_clonea(old_addr);
+	count = get_pool_size(old_addr, new_addr) - 1;
+	query->destroy(query);
+
+	/* Check whether pool is resizable */
+	old_end = host_create_from_chunk(AF_UNSPEC, old_addr, 0);
+	if (old_end && old_end->is_anyaddr(old_end))
+	{
+		fprintf(stderr, "pool is not resizable.\n");
+		old_end->destroy(old_end);
+		exit(EXIT_FAILURE);
+	}
+	DESTROY_IF(old_end);
+
+	if (db->execute(db, NULL,
+			"UPDATE pools SET end = ? WHERE name = ?",
+			DB_BLOB, new_addr, DB_TEXT, name) <= 0)
+	{
+		fprintf(stderr, "pool '%s' not found.\n", name);
+		exit(EXIT_FAILURE);
+	}
+
+	printf("allocating %d new addresses... ", count);
+	fflush(stdout);
+	/* run population in a transaction for sqlite */
+	begin_transaction();
+	while (count-- > 0)
+	{
+		chunk_increment(cur_addr);
+		db->execute(db, NULL,
+			"INSERT INTO addresses (pool, address, identity, acquired, released) "
+			"VALUES (?, ?, ?, ?, ?)",
+			DB_UINT, id, DB_BLOB, cur_addr,	DB_UINT, 0, DB_UINT, 0, DB_UINT, 1);
+	}
+	commit_transaction();
+	printf("done.\n", count);
+
+}
+
+/**
+ * create the lease query using the filter string
+ */
+static enumerator_t *create_lease_query(char *filter)
+{
+	enumerator_t *query;
+	identification_t *id = NULL;
+	host_t *addr = NULL;
+	u_int tstamp = 0;
+	bool online = FALSE, valid = FALSE, expired = FALSE;
+	char *value, *pos, *pool = NULL;
+	enum {
+		FIL_POOL = 0,
+		FIL_ID,
+		FIL_ADDR,
+		FIL_TSTAMP,
+		FIL_STATE,
+	};
+	char *const token[] = {
+		[FIL_POOL] = "pool",
+		[FIL_ID] = "id",
+		[FIL_ADDR] = "addr",
+		[FIL_TSTAMP] = "tstamp",
+		[FIL_STATE] = "status",
+		NULL
+	};
+
+	/* if the filter string contains a distinguished name as a ID, we replace
+	 * ", " by "/ " in order to not confuse the getsubopt parser */
+	pos = filter;
+	while ((pos = strchr(pos, ',')))
+	{
+		if (pos[1] == ' ')
+		{
+			pos[0] = '/';
+		}
+		pos++;
+	}
+
+	while (filter && *filter != '\0')
+	{
+		switch (getsubopt(&filter, token, &value))
+		{
+			case FIL_POOL:
+				if (value)
+				{
+					pool = value;
+				}
+				break;
+			case FIL_ID:
+				if (value)
+				{
+					id = identification_create_from_string(value);
+				}
+				break;
+			case FIL_ADDR:
+				if (value)
+				{
+					addr = host_create_from_string(value, 0);
+				}
+				if (!addr)
+				{
+					fprintf(stderr, "invalid 'addr' in filter string.\n");
+					exit(EXIT_FAILURE);
+				}
+				break;
+			case FIL_TSTAMP:
+				if (value)
+				{
+					tstamp = atoi(value);
+				}
+				if (tstamp == 0)
+				{
+					online = TRUE;
+				}
+				break;
+			case FIL_STATE:
+				if (value)
+				{
+					if (streq(value, "online"))
+					{
+						online = TRUE;
+					}
+					else if (streq(value, "valid"))
+					{
+						valid = TRUE;
+					}
+					else if (streq(value, "expired"))
+					{
+						expired = TRUE;
+					}
+					else
+					{
+						fprintf(stderr, "invalid 'state' in filter string.\n");
+						exit(EXIT_FAILURE);
+					}
+				}
+				break;
+			default:
+				fprintf(stderr, "invalid filter string.\n");
+				exit(EXIT_FAILURE);
+				break;
+		}
+	}
+	query = db->query(db,
+				"SELECT name, addresses.address, identities.type, "
+				"identities.data, leases.acquired, leases.released, timeout "
+				"FROM leases JOIN addresses ON leases.address = addresses.id "
+				"JOIN pools ON addresses.pool = pools.id "
+				"JOIN identities ON leases.identity = identities.id "
+				"WHERE (? OR name = ?) "
+				"AND (? OR (identities.type = ? AND identities.data = ?)) "
+				"AND (? OR addresses.address = ?) "
+				"AND (? OR (? >= leases.acquired AND (? <= leases.released))) "
+				"AND (? OR leases.released > ? - timeout) "
+				"AND (? OR leases.released < ? - timeout) "
+				"AND ? "
+				"UNION "
+				"SELECT name, address, identities.type, identities.data, "
+				"acquired, released, timeout FROM addresses "
+				"JOIN pools ON addresses.pool = pools.id "
+				"JOIN identities ON addresses.identity = identities.id "
+				"WHERE ? AND released = 0 "
+				"AND (? OR name = ?) "
+				"AND (? OR (identities.type = ? AND identities.data = ?)) "
+				"AND (? OR address = ?)",
+				DB_INT, pool == NULL, DB_TEXT, pool,
+				DB_INT, id == NULL,
+					DB_INT, id ? id->get_type(id) : 0,
+					DB_BLOB, id ? id->get_encoding(id) : chunk_empty,
+				DB_INT, addr == NULL,
+					DB_BLOB, addr ? addr->get_address(addr) : chunk_empty,
+				DB_INT, tstamp == 0, DB_UINT, tstamp, DB_UINT, tstamp,
+				DB_INT, !valid, DB_INT, time(NULL),
+				DB_INT, !expired, DB_INT, time(NULL),
+				DB_INT, !online,
+				/* union */
+				DB_INT, !(valid || expired),
+				DB_INT, pool == NULL, DB_TEXT, pool,
+				DB_INT, id == NULL,
+					DB_INT, id ? id->get_type(id) : 0,
+					DB_BLOB, id ? id->get_encoding(id) : chunk_empty,
+				DB_INT, addr == NULL,
+					DB_BLOB, addr ? addr->get_address(addr) : chunk_empty,
+				/* res */
+				DB_TEXT, DB_BLOB, DB_INT, DB_BLOB, DB_UINT, DB_UINT, DB_UINT);
+	/* id and addr leak but we can't destroy them until query is destroyed. */
+	return query;
+}
+
+/**
+ * ipsec pool --leases - show lease information of a pool
+ */
+static void leases(char *filter, bool utc)
+{
+	enumerator_t *query;
+	chunk_t address_chunk, identity_chunk;
+	int identity_type;
+	char *name;
+	u_int db_acquired, db_released, db_timeout;
+	time_t acquired, released, timeout;
+	host_t *address;
+	identification_t *identity;
+	bool found = FALSE;
+
+	query = create_lease_query(filter);
+	if (!query)
+	{
+		fprintf(stderr, "querying leases failed.\n");
+		exit(EXIT_FAILURE);
+	}
+	while (query->enumerate(query, &name, &address_chunk, &identity_type,
+							&identity_chunk, &db_acquired, &db_released, &db_timeout))
+	{
+		if (!found)
+		{
+			int len = utc ? 25 : 21;
+
+			found = TRUE;
+			printf("%-8s %-15s %-7s  %-*s %-*s %s\n",
+				   "name", "address", "status", len, "start", len, "end", "identity");
+		}
+		address = host_create_from_chunk(AF_UNSPEC, address_chunk, 0);
+		identity = identification_create_from_encoding(identity_type, identity_chunk);
+
+		/* u_int is not always equal to time_t */
+		acquired = (time_t)db_acquired;
+		released = (time_t)db_released;
+		timeout  = (time_t)db_timeout;
+
+		printf("%-8s %-15H ", name, address);
+		if (released == 0)
+		{
+			printf("%-7s ", "online");
+		}
+		else if (timeout == 0)
+		{
+			printf("%-7s ", "static");
+		}
+		else if (released >= time(NULL) - timeout)
+		{
+			printf("%-7s ", "valid");
+		}
+		else
+		{
+			printf("%-7s ", "expired");
+		}
+
+		printf(" %T  ", &acquired, utc);
+		if (released)
+		{
+			printf("%T  ", &released, utc);
+		}
+		else
+		{
+			printf("                      ");
+			if (utc)
+			{
+				printf("    ");
+			}
+		}
+		printf("%Y\n", identity);
+		DESTROY_IF(address);
+		identity->destroy(identity);
+	}
+	query->destroy(query);
+	if (!found)
+	{
+		fprintf(stderr, "no matching leases found.\n");
+		exit(EXIT_FAILURE);
+	}
+}
+
+/**
+ * ipsec pool --purge - delete expired leases
+ */
+static void purge(char *name)
+{
+	int purged = 0;
+
+	purged = db->execute(db, NULL,
+				"DELETE FROM leases WHERE address IN ("
+				" SELECT id FROM addresses WHERE pool IN ("
+				"  SELECT id FROM pools WHERE name = ?))",
+				DB_TEXT, name);
+	if (purged < 0)
+	{
+		fprintf(stderr, "purging pool '%s' failed.\n", name);
+		exit(EXIT_FAILURE);
+	}
+	fprintf(stderr, "purged %d leases in pool '%s'.\n", purged, name);
+}
+
+#define ARGV_SIZE 32
+
+static void argv_add(char **argv, int argc, char *value)
+{
+	if (argc >= ARGV_SIZE)
+	{
+		fprintf(stderr, "too many arguments: %s\n", value);
+		exit(EXIT_FAILURE);
+	}
+	argv[argc] = value;
+}
+
+/**
+ * ipsec pool --batch - read commands from a file
+ */
+static void batch(char *argv0, char *name)
+{
+	char command[512];
+
+	FILE *file = strncmp(name, "-", 1) == 0 ? stdin : fopen(name, "r");
+	if (file == NULL)
+	{
+		fprintf(stderr, "opening '%s' failed: %s\n", name, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	begin_transaction();
+	while (fgets(command, sizeof(command), file))
+	{
+		char *argv[ARGV_SIZE], *start;
+		int i, argc = 0;
+		size_t cmd_len = strlen(command);
+
+		/* ignore empty lines */
+		if (cmd_len == 1 && *(command + cmd_len - 1) == '\n')
+		{
+			continue;
+		}
+
+		/* parse command into argv */
+		start = command;
+		argv_add(argv, argc++, argv0);
+		for (i = 0; i < cmd_len; ++i)
+		{
+			if (command[i] == ' ' || command[i] == '\n')
+			{
+				if (command + i == start)
+				{
+					/* ignore leading whitespace */
+					++start;
+					continue;
+				}
+				command[i] = '\0';
+				argv_add(argv, argc++, start);
+				start = command + i + 1;
+			}
+		}
+		if (strlen(start) > 0)
+		{
+			argv_add(argv, argc++, start);
+		}
+		argv_add(argv, argc, NULL);
+
+		do_args(argc, argv);
+	}
+	commit_transaction();
+
+	if (file != stdin)
+	{
+		fclose(file);
+	}
+}
+
+/**
+ * atexit handler to close db on shutdown
+ */
+static void cleanup(void)
+{
+	db->destroy(db);
+	DESTROY_IF(start);
+	DESTROY_IF(end);
+	DESTROY_IF(server);
+}
+
+static void do_args(int argc, char *argv[])
+{
+	char *name = "", *filter = "", *addresses = NULL;
+	int timeout = 0;
+	bool utc = FALSE;
+	enum {
+		OP_UNDEF,
+		OP_USAGE,
+		OP_STATUS,
+		OP_ADD,
+		OP_ADD_ATTR,
+		OP_DEL,
+		OP_DEL_ATTR,
+		OP_RESIZE,
+		OP_LEASES,
+		OP_PURGE,
+		OP_BATCH
+	} operation = OP_UNDEF;
+
+	/* reinit getopt state */
+	optind = 0;
+
+	while (TRUE)
+	{
+		int c;
+
+		struct option long_opts[] = {
+			{ "help", no_argument, NULL, 'h' },
+
+			{ "utc", no_argument, NULL, 'u' },
+			{ "status", no_argument, NULL, 'w' },
+			{ "add", required_argument, NULL, 'a' },
+			{ "replace", required_argument, NULL, 'c' },
+			{ "del", required_argument, NULL, 'd' },
+			{ "resize", required_argument, NULL, 'r' },
+			{ "leases", no_argument, NULL, 'l' },
+			{ "purge", required_argument, NULL, 'p' },
+			{ "batch", required_argument, NULL, 'b' },
+
+			{ "start", required_argument, NULL, 's' },
+			{ "end", required_argument, NULL, 'e' },
+			{ "addresses", required_argument, NULL, 'x' },
+			{ "timeout", required_argument, NULL, 't' },
+			{ "filter", required_argument, NULL, 'f' },
+			{ "server", required_argument, NULL, 'v' },
+			{ 0,0,0,0 }
+		};
+
+		c = getopt_long(argc, argv, "", long_opts, NULL);
+		switch (c)
+		{
+			case EOF:
+				break;
+			case 'h':
+				operation = OP_USAGE;
+				break;
+			case 'w':
+				operation = OP_STATUS;
+				break;
+			case 'u':
+				utc = TRUE;
+				continue;
+			case 'c':
+				replace_pool = TRUE;
+				/* fallthrough */
+			case 'a':
+				name = optarg;
+				operation = is_attribute(name) ? OP_ADD_ATTR : OP_ADD;
+				if (replace_pool && operation == OP_ADD_ATTR)
+				{
+					fprintf(stderr, "invalid pool name: '%s'.\n", optarg);
+					usage();
+					exit(EXIT_FAILURE);
+				}
+				continue;
+			case 'd':
+				name = optarg;
+				operation = is_attribute(name) ? OP_DEL_ATTR : OP_DEL;
+				continue;
+			case 'r':
+				name = optarg;
+				operation = OP_RESIZE;
+				continue;
+			case 'l':
+				operation = OP_LEASES;
+				continue;
+			case 'p':
+				name = optarg;
+				operation = OP_PURGE;
+				continue;
+			case 'b':
+				name = optarg;
+				if (operation == OP_BATCH)
+				{
+					fprintf(stderr, "--batch commands can not be nested\n");
+					exit(EXIT_FAILURE);
+				}
+				operation = OP_BATCH;
+				continue;
+			case 's':
+				DESTROY_IF(start);
+				start = host_create_from_string(optarg, 0);
+				if (start == NULL)
+				{
+					fprintf(stderr, "invalid start address: '%s'.\n", optarg);
+					usage();
+					exit(EXIT_FAILURE);
+				}
+				continue;
+			case 'e':
+				DESTROY_IF(end);
+				end = host_create_from_string(optarg, 0);
+				if (end == NULL)
+				{
+					fprintf(stderr, "invalid end address: '%s'.\n", optarg);
+					usage();
+					exit(EXIT_FAILURE);
+				}
+				continue;
+			case 't':
+				timeout = atoi(optarg);
+				if (timeout == 0 && strcmp(optarg, "0") != 0)
+				{
+					fprintf(stderr, "invalid timeout '%s'.\n", optarg);
+					usage();
+					exit(EXIT_FAILURE);
+				}
+				continue;
+			case 'f':
+				filter = optarg;
+				continue;
+			case 'x':
+				addresses = optarg;
+				continue;
+			case 'v':
+				DESTROY_IF(server);
+				server = host_create_from_string(optarg, 0);
+				if (server == NULL)
+				{
+					fprintf(stderr, "invalid server address: '%s'.\n", optarg);
+					usage();
+					exit(EXIT_FAILURE);
+				}
+				continue;
+			default:
+				usage();
+				exit(EXIT_FAILURE);
+				break;
+		}
+		break;
+	}
+
+	switch (operation)
+	{
+		case OP_USAGE:
+			usage();
+			break;
+		case OP_STATUS:
+			status();
+			break;
+		case OP_ADD:
+			if (addresses != NULL)
+			{
+				add_addresses(name, addresses, timeout);
+			}
+			else if (start != NULL && end != NULL)
+			{
+				add(name, start, end, timeout);
+			}
+			else
+			{
+				fprintf(stderr, "missing arguments.\n");
+				usage();
+				exit(EXIT_FAILURE);
+			}
+			break;
+		case OP_ADD_ATTR:
+			if (server == NULL)
+			{
+				fprintf(stderr, "missing arguments.\n");
+				usage();
+				exit(EXIT_FAILURE);
+			}
+			add_attr(name, server);
+			break;
+		case OP_DEL:
+			del(name);
+			break;
+		case OP_DEL_ATTR:
+			del_attr(name, server);
+			break;
+		case OP_RESIZE:
+			if (end == NULL)
+			{
+				fprintf(stderr, "missing arguments.\n");
+				usage();
+				exit(EXIT_FAILURE);
+			}
+			resize(name, end);
+			break;
+		case OP_LEASES:
+			leases(filter, utc);
+			break;
+		case OP_PURGE:
+			purge(name);
+			break;
+		case OP_BATCH:
+			if (name == NULL)
+			{
+				fprintf(stderr, "missing arguments.\n");
+				usage();
+				exit(EXIT_FAILURE);
+			}
+			batch(argv[0], name);
+			break;
+		default:
+			usage();
+			exit(EXIT_FAILURE);
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	char *uri;
+
+	atexit(library_deinit);
+
+	/* initialize library */
+	if (!library_init(NULL))
+	{
+		exit(SS_RC_LIBSTRONGSWAN_INTEGRITY);
+	}
+	if (lib->integrity &&
+		!lib->integrity->check_file(lib->integrity, "pool", argv[0]))
+	{
+		fprintf(stderr, "integrity check of pool failed\n");
+		exit(SS_RC_DAEMON_INTEGRITY);
+	}
+	if (!lib->plugins->load(lib->plugins, NULL,
+			lib->settings->get_str(lib->settings, "pool.load", PLUGINS)))
+	{
+		exit(SS_RC_INITIALIZATION_FAILED);
+	}
+
+	uri = lib->settings->get_str(lib->settings, "libhydra.plugins.attr-sql.database", NULL);
+	if (!uri)
+	{
+		fprintf(stderr, "database URI libhydra.plugins.attr-sql.database not set.\n");
+		exit(SS_RC_INITIALIZATION_FAILED);
+	}
+	db = lib->db->create(lib->db, uri);
+	if (!db)
+	{
+		fprintf(stderr, "opening database failed.\n");
+		exit(SS_RC_INITIALIZATION_FAILED);
+	}
+	atexit(cleanup);
+
+	do_args(argc, argv);
+
+	exit(EXIT_SUCCESS);
+}
+
diff --git a/src/libhydra/plugins/attr_sql/sql_attribute.c b/src/libhydra/plugins/attr_sql/sql_attribute.c
new file mode 100644
index 000000000..a7cfde649
--- /dev/null
+++ b/src/libhydra/plugins/attr_sql/sql_attribute.c
@@ -0,0 +1,384 @@
+/*
+ * 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.
+ */
+
+#include <time.h>
+
+#include <debug.h>
+#include <library.h>
+
+#include "sql_attribute.h"
+
+typedef struct private_sql_attribute_t private_sql_attribute_t;
+
+/**
+ * private data of sql_attribute
+ */
+struct private_sql_attribute_t {
+
+	/**
+	 * public functions
+	 */
+	sql_attribute_t public;
+
+	/**
+	 * database connection
+	 */
+	database_t *db;
+
+	/**
+	 * wheter to record lease history in lease table
+	 */
+	bool history;
+};
+
+/**
+ * lookup/insert an identity
+ */
+static u_int get_identity(private_sql_attribute_t *this, identification_t *id)
+{
+	enumerator_t *e;
+	u_int row;
+
+	/* look for peer identity in the identities table */
+	e = this->db->query(this->db,
+						"SELECT id FROM identities WHERE type = ? AND data = ?",
+						DB_INT, id->get_type(id), DB_BLOB, id->get_encoding(id),
+						DB_UINT);
+
+	if (e && e->enumerate(e, &row))
+	{
+		e->destroy(e);
+		return row;
+	}
+	DESTROY_IF(e);
+	/* not found, insert new one */
+	if (this->db->execute(this->db, &row,
+				  "INSERT INTO identities (type, data) VALUES (?, ?)",
+				  DB_INT, id->get_type(id), DB_BLOB, id->get_encoding(id)) == 1)
+	{
+		return row;
+	}
+	return 0;
+}
+
+/**
+ * Lookup pool by name
+ */
+static u_int get_pool(private_sql_attribute_t *this, char *name, u_int *timeout)
+{
+	enumerator_t *e;
+	u_int pool;
+
+	e = this->db->query(this->db, "SELECT id, timeout FROM pools WHERE name = ?",
+						DB_TEXT, name, DB_UINT, DB_UINT);
+	if (e && e->enumerate(e, &pool, timeout))
+	{
+		e->destroy(e);
+		return pool;
+	}
+	DESTROY_IF(e);
+	return 0;
+}
+
+/**
+ * Look up an existing lease
+ */
+static host_t* check_lease(private_sql_attribute_t *this, char *name,
+						   u_int pool, u_int identity)
+{
+	while (TRUE)
+	{
+		u_int id;
+		chunk_t address;
+		enumerator_t *e;
+		time_t now = time(NULL);
+
+		e = this->db->query(this->db,
+				"SELECT id, address FROM addresses "
+				"WHERE pool = ? AND identity = ? AND released != 0 LIMIT 1",
+				DB_UINT, pool, DB_UINT, identity, DB_UINT, DB_BLOB);
+		if (!e || !e->enumerate(e, &id, &address))
+		{
+			DESTROY_IF(e);
+			break;
+		}
+		address = chunk_clonea(address);
+		e->destroy(e);
+
+		if (this->db->execute(this->db, NULL,
+				"UPDATE addresses SET acquired = ?, released = 0 "
+				"WHERE id = ? AND identity = ? AND released != 0",
+				DB_UINT, now, DB_UINT, id, DB_UINT, identity) > 0)
+		{
+			host_t *host;
+
+			host = host_create_from_chunk(AF_UNSPEC, address, 0);
+			if (host)
+			{
+				DBG1(DBG_CFG, "acquired existing lease for address %H in"
+					 " pool '%s'", host, name);
+				return host;
+			}
+		}
+	}
+	return NULL;
+}
+
+/**
+ * We check for unallocated addresses or expired leases. First we select an
+ * address as a candidate, but double check later on if it is still available
+ * during the update operation. This allows us to work without locking.
+ */
+static host_t* get_lease(private_sql_attribute_t *this, char *name,
+						 u_int pool, u_int timeout, u_int identity)
+{
+	while (TRUE)
+	{
+		u_int id;
+		chunk_t address;
+		enumerator_t *e;
+		time_t now = time(NULL);
+		int hits;
+
+		if (timeout)
+		{
+			/* check for an expired lease */
+			e = this->db->query(this->db,
+				"SELECT id, address FROM addresses "
+				"WHERE pool = ? AND released != 0 AND released < ? LIMIT 1",
+				DB_UINT, pool, DB_UINT, now - timeout, DB_UINT, DB_BLOB);
+		}
+		else
+		{
+			/* with static leases, check for an unallocated address */
+			e = this->db->query(this->db,
+				"SELECT id, address FROM addresses "
+				"WHERE pool = ? AND identity = 0 LIMIT 1",
+				DB_UINT, pool, DB_UINT, DB_BLOB);
+
+		}
+
+		if (!e || !e->enumerate(e, &id, &address))
+		{
+			DESTROY_IF(e);
+			break;
+		}
+		address = chunk_clonea(address);
+		e->destroy(e);
+
+		if (timeout)
+		{
+			hits = this->db->execute(this->db, NULL,
+						"UPDATE addresses SET "
+						"acquired = ?, released = 0, identity = ? "
+						"WHERE id = ? AND released != 0 AND released < ?",
+						DB_UINT, now, DB_UINT, identity,
+						DB_UINT, id, DB_UINT, now - timeout);
+		}
+		else
+		{
+			hits = this->db->execute(this->db, NULL,
+						"UPDATE addresses SET "
+						"acquired = ?, released = 0, identity = ? "
+						"WHERE id = ? AND identity = 0",
+						DB_UINT, now, DB_UINT, identity, DB_UINT, id);
+		}
+		if (hits > 0)
+		{
+			host_t *host;
+
+			host = host_create_from_chunk(AF_UNSPEC, address, 0);
+			if (host)
+			{
+				DBG1(DBG_CFG, "acquired new lease for address %H in pool '%s'",
+					 host, name);
+				return host;
+			}
+		}
+	}
+	DBG1(DBG_CFG, "no available address found in pool '%s'", name);
+	return NULL;
+}
+
+/**
+ * Implementation of attribute_provider_t.acquire_address
+ */
+static host_t* acquire_address(private_sql_attribute_t *this,
+							   char *names, identification_t *id,
+							   host_t *requested)
+{
+	host_t *address = NULL;
+	u_int identity, pool, timeout;
+
+	identity = get_identity(this, id);
+	if (identity)
+	{
+		/* check for a single pool first (no concatenation and enumeration) */
+		if (strchr(names, ',') == NULL)
+		{
+			pool = get_pool(this, names, &timeout);
+			if (pool)
+			{
+				/* check for an existing lease */
+				address = check_lease(this, names, pool, identity);
+				if (address == NULL)
+				{
+					/* get an unallocated address or expired lease */
+					address = get_lease(this, names, pool, timeout, identity);
+				}
+			}
+		}
+		else
+		{
+			enumerator_t *enumerator;
+			char *name;
+
+			/* in a first step check for an existing lease over all pools */
+			enumerator = enumerator_create_token(names, ",", " ");
+			while (enumerator->enumerate(enumerator, &name))
+			{
+				pool = get_pool(this, name, &timeout);
+				if (pool)
+				{
+					address = check_lease(this, name, pool, identity);
+					if (address)
+					{
+						enumerator->destroy(enumerator);
+						return address;
+					}
+				}
+			}
+			enumerator->destroy(enumerator);
+
+			/* in a second step get an unallocated address or expired lease */
+			enumerator = enumerator_create_token(names, ",", " ");
+			while (enumerator->enumerate(enumerator, &name))
+			{
+				pool = get_pool(this, name, &timeout);
+				if (pool)
+				{
+					address = get_lease(this, name, pool, timeout, identity);
+					if (address)
+					{
+						break;
+					}
+				}
+			}
+			enumerator->destroy(enumerator);
+		}
+	}
+	return address;
+}
+
+/**
+ * Implementation of attribute_provider_t.release_address
+ */
+static bool release_address(private_sql_attribute_t *this,
+							char *name, host_t *address, identification_t *id)
+{
+	enumerator_t *enumerator;
+	bool found = FALSE;
+	time_t now = time(NULL);
+
+	enumerator = enumerator_create_token(name, ",", " ");
+	while (enumerator->enumerate(enumerator, &name))
+	{
+		u_int pool, timeout;
+
+		pool = get_pool(this, name, &timeout);
+		if (pool)
+		{
+			if (this->history)
+			{
+				this->db->execute(this->db, NULL,
+					"INSERT INTO leases (address, identity, acquired, released)"
+					" SELECT id, identity, acquired, ? FROM addresses "
+					" WHERE pool = ? AND address = ?",
+					DB_UINT, now, DB_UINT, pool,
+					DB_BLOB, address->get_address(address));
+			}
+			if (this->db->execute(this->db, NULL,
+					"UPDATE addresses SET released = ? WHERE "
+					"pool = ? AND address = ?", DB_UINT, time(NULL),
+					DB_UINT, pool, DB_BLOB, address->get_address(address)) > 0)
+			{
+				found = TRUE;
+				break;
+			}
+		}
+	}
+	enumerator->destroy(enumerator);
+	return found;
+}
+
+/**
+ * Implementation of sql_attribute_t.create_attribute_enumerator
+ */
+static enumerator_t* create_attribute_enumerator(private_sql_attribute_t *this,
+											identification_t *id, host_t *vip)
+{
+	if (vip)
+	{
+		enumerator_t *enumerator;
+
+		enumerator = this->db->query(this->db,
+						"SELECT type, value FROM attributes", DB_INT, DB_BLOB);
+		if (enumerator)
+		{
+			return enumerator;
+		}
+	}
+	return enumerator_create_empty();
+}
+
+/**
+ * Implementation of sql_attribute_t.destroy
+ */
+static void destroy(private_sql_attribute_t *this)
+{
+	free(this);
+}
+
+/*
+ * see header file
+ */
+sql_attribute_t *sql_attribute_create(database_t *db)
+{
+	private_sql_attribute_t *this = malloc_thing(private_sql_attribute_t);
+	time_t now = time(NULL);
+
+	this->public.provider.acquire_address = (host_t*(*)(attribute_provider_t *this, char*, identification_t *, host_t *))acquire_address;
+	this->public.provider.release_address = (bool(*)(attribute_provider_t *this, char*,host_t *, identification_t*))release_address;
+	this->public.provider.create_attribute_enumerator = (enumerator_t*(*)(attribute_provider_t*, identification_t *id, host_t *host))create_attribute_enumerator;
+	this->public.destroy = (void(*)(sql_attribute_t*))destroy;
+
+	this->db = db;
+	this->history = lib->settings->get_bool(lib->settings,
+						"libhydra.plugins.attr-sql.lease_history", TRUE);
+
+	/* close any "online" leases in the case we crashed */
+	if (this->history)
+	{
+		this->db->execute(this->db, NULL,
+					"INSERT INTO leases (address, identity, acquired, released)"
+					" SELECT id, identity, acquired, ? FROM addresses "
+					" WHERE released = 0", DB_UINT, now);
+	}
+	this->db->execute(this->db, NULL,
+					  "UPDATE addresses SET released = ? WHERE released = 0",
+					  DB_UINT, now);
+	return &this->public;
+}
+
diff --git a/src/libhydra/plugins/attr_sql/sql_attribute.h b/src/libhydra/plugins/attr_sql/sql_attribute.h
new file mode 100644
index 000000000..ca87eb27e
--- /dev/null
+++ b/src/libhydra/plugins/attr_sql/sql_attribute.h
@@ -0,0 +1,50 @@
+/*
+ * 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.
+ */
+
+/**
+ * @defgroup sql_attribute sql_attribute
+ * @{ @ingroup attr_sql
+ */
+
+#ifndef SQL_ATTRIBUTE_H_
+#define SQL_ATTRIBUTE_H_
+
+#include <attributes/attribute_provider.h>
+#include <database/database.h>
+
+typedef struct sql_attribute_t sql_attribute_t;
+
+/**
+ * SQL database based IKEv2 cfg attribute provider.
+ */
+struct sql_attribute_t {
+
+	/**
+	 * Implements attribute provider interface
+	 */
+	attribute_provider_t provider;
+
+	/**
+	 * Destroy a sql_attribute instance.
+	 */
+	void (*destroy)(sql_attribute_t *this);
+};
+
+/**
+ * Create a sql_attribute instance.
+ */
+sql_attribute_t *sql_attribute_create(database_t *db);
+
+#endif /** SQL_ATTRIBUTE_H_ @}*/