kernel-wfp: Add a stub for a Windows Filtering Platform based IPsec backend

7 files changed, 365 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index 2085ae1b3..82d6fd286 100644
--- a/configure.ac
+++ b/configure.ac
@@ -204,6 +204,7 @@ ARG_ENABL_SET([kernel-pfkey],   [enable the PF_KEY kernel interface.])
 ARG_ENABL_SET([kernel-pfroute], [enable the PF_ROUTE kernel interface.])
 ARG_ENABL_SET([kernel-klips],   [enable the KLIPS kernel interface.])
 ARG_ENABL_SET([kernel-libipsec],[enable the libipsec kernel interface.])
+ARG_ENABL_SET([kernel-wfp],     [enable the Windows Filtering Platform IPsec backend.])
 ARG_DISBL_SET([socket-default], [disable default socket implementation for charon.])
 ARG_ENABL_SET([socket-dynamic], [enable dynamic socket implementation for charon])
 ARG_ENABL_SET([socket-win],     [enable Winsock2 based socket implementation for charon])
@@ -1209,6 +1210,7 @@ ADD_PLUGIN([attr],                 [h charon])
 ADD_PLUGIN([attr-sql],             [h charon])
 ADD_PLUGIN([load-tester],          [c charon])
 ADD_PLUGIN([kernel-libipsec],      [c charon cmd])
+ADD_PLUGIN([kernel-wfp],           [c charon])
 ADD_PLUGIN([kernel-pfkey],         [h charon starter nm cmd])
 ADD_PLUGIN([kernel-pfroute],       [h charon starter nm cmd])
 ADD_PLUGIN([kernel-klips],         [h charon starter])
@@ -1368,6 +1370,7 @@ AM_CONDITIONAL(USE_UNIT_TESTS, test x$unit_tester = xtrue)
 AM_CONDITIONAL(USE_LOAD_TESTER, test x$load_tester = xtrue)
 AM_CONDITIONAL(USE_HA, test x$ha = xtrue)
 AM_CONDITIONAL(USE_KERNEL_LIBIPSEC, test x$kernel_libipsec = xtrue)
+AM_CONDITIONAL(USE_KERNEL_WFP, test x$kernel_wfp = xtrue)
 AM_CONDITIONAL(USE_WHITELIST, test x$whitelist = xtrue)
 AM_CONDITIONAL(USE_LOOKIP, test x$lookip = xtrue)
 AM_CONDITIONAL(USE_ERROR_NOTIFY, test x$error_notify = xtrue)
@@ -1662,6 +1665,7 @@ AC_CONFIG_FILES([
 	src/libcharon/plugins/uci/Makefile
 	src/libcharon/plugins/ha/Makefile
 	src/libcharon/plugins/kernel_libipsec/Makefile
+	src/libcharon/plugins/kernel_wfp/Makefile
 	src/libcharon/plugins/whitelist/Makefile
 	src/libcharon/plugins/lookip/Makefile
 	src/libcharon/plugins/error_notify/Makefile
diff --git a/src/libcharon/Makefile.am b/src/libcharon/Makefile.am
index 52d20b315..907f65932 100644
--- a/src/libcharon/Makefile.am
+++ b/src/libcharon/Makefile.am
@@ -489,6 +489,13 @@ if MONOLITHIC
 endif
 endif
 
+if USE_KERNEL_WFP
+  SUBDIRS += plugins/kernel_wfp
+if MONOLITHIC
+  libcharon_la_LIBADD += plugins/kernel_wfp/libstrongswan-kernel-wfp.la
+endif
+endif
+
 if USE_WHITELIST
   SUBDIRS += plugins/whitelist
 if MONOLITHIC
diff --git a/src/libcharon/plugins/kernel_wfp/Makefile.am b/src/libcharon/plugins/kernel_wfp/Makefile.am
new file mode 100644
index 000000000..1a2f83ee2
--- /dev/null
+++ b/src/libcharon/plugins/kernel_wfp/Makefile.am
@@ -0,0 +1,20 @@
+AM_CPPFLAGS = \
+	-I$(top_srcdir)/src/libstrongswan \
+	-I$(top_srcdir)/src/libhydra \
+	-I$(top_srcdir)/src/libcharon
+
+AM_CFLAGS = \
+	$(PLUGIN_CFLAGS)
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-kernel-wfp.la
+else
+plugin_LTLIBRARIES = libstrongswan-kernel-wfp.la
+endif
+
+libstrongswan_kernel_wfp_la_SOURCES = \
+	kernel_wfp_plugin.h kernel_wfp_plugin.c \
+	kernel_wfp_ipsec.h kernel_wfp_ipsec.c
+
+libstrongswan_kernel_wfp_la_LDFLAGS = -module -avoid-version
+libstrongswan_kernel_wfp_la_LIBADD = -lfwpuclnt
diff --git a/src/libcharon/plugins/kernel_wfp/kernel_wfp_ipsec.c b/src/libcharon/plugins/kernel_wfp/kernel_wfp_ipsec.c
new file mode 100644
index 000000000..ac37cb66e
--- /dev/null
+++ b/src/libcharon/plugins/kernel_wfp/kernel_wfp_ipsec.c
@@ -0,0 +1,169 @@
+/*
+ * Copyright (C) 2013 Martin Willi
+ * Copyright (C) 2013 revosec AG
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "kernel_wfp_ipsec.h"
+
+#include <daemon.h>
+
+typedef struct private_kernel_wfp_ipsec_t private_kernel_wfp_ipsec_t;
+
+struct private_kernel_wfp_ipsec_t {
+
+	/**
+	 * Public interface
+	 */
+	kernel_wfp_ipsec_t public;
+};
+
+METHOD(kernel_ipsec_t, get_features, kernel_feature_t,
+	private_kernel_wfp_ipsec_t *this)
+{
+	return KERNEL_ESP_V3_TFC;
+}
+
+METHOD(kernel_ipsec_t, get_spi, status_t,
+	private_kernel_wfp_ipsec_t *this, host_t *src, host_t *dst,
+	u_int8_t protocol, u_int32_t reqid, u_int32_t *spi)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, get_cpi, status_t,
+	private_kernel_wfp_ipsec_t *this, host_t *src, host_t *dst,
+	u_int32_t reqid, u_int16_t *cpi)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, add_sa, status_t,
+	private_kernel_wfp_ipsec_t *this, host_t *src, host_t *dst,
+	u_int32_t spi, u_int8_t protocol, u_int32_t reqid, mark_t mark,
+	u_int32_t tfc, lifetime_cfg_t *lifetime, u_int16_t enc_alg, chunk_t enc_key,
+	u_int16_t int_alg, chunk_t int_key, ipsec_mode_t mode, u_int16_t ipcomp,
+	u_int16_t cpi, bool initiator, bool encap, bool esn, bool inbound,
+	traffic_selector_t *src_ts, traffic_selector_t *dst_ts)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, update_sa, status_t,
+	private_kernel_wfp_ipsec_t *this, u_int32_t spi, u_int8_t protocol,
+	u_int16_t cpi, host_t *src, host_t *dst, host_t *new_src, host_t *new_dst,
+	bool encap, bool new_encap, mark_t mark)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, query_sa, status_t,
+	private_kernel_wfp_ipsec_t *this, host_t *src, host_t *dst,
+	u_int32_t spi, u_int8_t protocol, mark_t mark, u_int64_t *bytes,
+	u_int64_t *packets, time_t *time)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, del_sa, status_t,
+	private_kernel_wfp_ipsec_t *this, host_t *src, host_t *dst,
+	u_int32_t spi, u_int8_t protocol, u_int16_t cpi, mark_t mark)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, flush_sas, status_t,
+	private_kernel_wfp_ipsec_t *this)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, add_policy, status_t,
+	private_kernel_wfp_ipsec_t *this, host_t *src, host_t *dst,
+	traffic_selector_t *src_ts, traffic_selector_t *dst_ts,
+	policy_dir_t direction, policy_type_t type, ipsec_sa_cfg_t *sa, mark_t mark,
+	policy_priority_t priority)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, query_policy, status_t,
+	private_kernel_wfp_ipsec_t *this, traffic_selector_t *src_ts,
+	traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
+	time_t *use_time)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, del_policy, status_t,
+	private_kernel_wfp_ipsec_t *this, traffic_selector_t *src_ts,
+	traffic_selector_t *dst_ts, policy_dir_t direction, u_int32_t reqid,
+	mark_t mark, policy_priority_t priority)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, flush_policies, status_t,
+	private_kernel_wfp_ipsec_t *this)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, bypass_socket, bool,
+	private_kernel_wfp_ipsec_t *this, int fd, int family)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, enable_udp_decap, bool,
+	private_kernel_wfp_ipsec_t *this, int fd, int family, u_int16_t port)
+{
+	return NOT_SUPPORTED;
+}
+
+METHOD(kernel_ipsec_t, destroy, void,
+	private_kernel_wfp_ipsec_t *this)
+{
+	free(this);
+}
+
+/*
+ * Described in header.
+ */
+kernel_wfp_ipsec_t *kernel_wfp_ipsec_create()
+{
+	private_kernel_wfp_ipsec_t *this;
+
+	INIT(this,
+		.public = {
+			.interface = {
+				.get_features = _get_features,
+				.get_spi = _get_spi,
+				.get_cpi = _get_cpi,
+				.add_sa  = _add_sa,
+				.update_sa = _update_sa,
+				.query_sa = _query_sa,
+				.del_sa = _del_sa,
+				.flush_sas = _flush_sas,
+				.add_policy = _add_policy,
+				.query_policy = _query_policy,
+				.del_policy = _del_policy,
+				.flush_policies = _flush_policies,
+				.bypass_socket = _bypass_socket,
+				.enable_udp_decap = _enable_udp_decap,
+				.destroy = _destroy,
+			},
+		},
+	);
+
+	return &this->public;
+};
diff --git a/src/libcharon/plugins/kernel_wfp/kernel_wfp_ipsec.h b/src/libcharon/plugins/kernel_wfp/kernel_wfp_ipsec.h
new file mode 100644
index 000000000..d61c230e4
--- /dev/null
+++ b/src/libcharon/plugins/kernel_wfp/kernel_wfp_ipsec.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2013 Martin Willi
+ * Copyright (C) 2013 revosec AG
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup kernel_wfp_ipsec kernel_wfp_ipsec
+ * @{ @ingroup kernel_wfp
+ */
+
+#ifndef KERNEL_WFP_IPSEC_H_
+#define KERNEL_WFP_IPSEC_H_
+
+#include <library.h>
+#include <kernel/kernel_ipsec.h>
+
+typedef struct kernel_wfp_ipsec_t kernel_wfp_ipsec_t;
+
+/**
+ * Windows Filter Platform based IPsec kernel backend.
+ */
+struct kernel_wfp_ipsec_t {
+
+	/**
+	 * Implements kernel_ipsec_t interface
+	 */
+	kernel_ipsec_t interface;
+};
+
+/**
+ * Create WFP kernel interface instance.
+ *
+ * @return			kernel_wfp_ipsec_t instance
+ */
+kernel_wfp_ipsec_t *kernel_wfp_ipsec_create();
+
+#endif /** KERNEL_WFP_IPSEC_H_ @}*/
diff --git a/src/libcharon/plugins/kernel_wfp/kernel_wfp_plugin.c b/src/libcharon/plugins/kernel_wfp/kernel_wfp_plugin.c
new file mode 100644
index 000000000..3260c7eed
--- /dev/null
+++ b/src/libcharon/plugins/kernel_wfp/kernel_wfp_plugin.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2013 Martin Willi
+ * Copyright (C) 2013 revosec AG
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "kernel_wfp_plugin.h"
+#include "kernel_wfp_ipsec.h"
+
+#include <daemon.h>
+
+typedef struct private_kernel_wfp_plugin_t private_kernel_wfp_plugin_t;
+
+/**
+ * Private data of kernel-wfp plugin
+ */
+struct private_kernel_wfp_plugin_t {
+
+	/**
+	 * Implements plugin interface
+	 */
+	kernel_wfp_plugin_t public;
+};
+
+METHOD(plugin_t, get_name, char*,
+	private_kernel_wfp_plugin_t *this)
+{
+	return "kernel-wfp";
+}
+
+METHOD(plugin_t, get_features, int,
+	private_kernel_wfp_plugin_t *this, plugin_feature_t *features[])
+{
+	static plugin_feature_t f[] = {
+		PLUGIN_CALLBACK(kernel_ipsec_register, kernel_wfp_ipsec_create),
+			PLUGIN_PROVIDE(CUSTOM, "kernel-ipsec"),
+	};
+	*features = f;
+	return countof(f);
+}
+
+METHOD(plugin_t, destroy, void,
+	private_kernel_wfp_plugin_t *this)
+{
+	free(this);
+}
+
+/*
+ * see header file
+ */
+plugin_t *kernel_wfp_plugin_create()
+{
+	private_kernel_wfp_plugin_t *this;
+
+	INIT(this,
+		.public = {
+			.plugin = {
+				.get_name = _get_name,
+				.get_features = _get_features,
+				.destroy = _destroy,
+			},
+		},
+	);
+
+	return &this->public.plugin;
+}
diff --git a/src/libcharon/plugins/kernel_wfp/kernel_wfp_plugin.h b/src/libcharon/plugins/kernel_wfp/kernel_wfp_plugin.h
new file mode 100644
index 000000000..a538e34a1
--- /dev/null
+++ b/src/libcharon/plugins/kernel_wfp/kernel_wfp_plugin.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2013 Martin Willi
+ * Copyright (C) 2013 revosec AG
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup kernel_wfp kernel_wfp
+ * @ingroup cplugins
+ *
+ * @defgroup kernel_wfp_plugin kernel_wfp_plugin
+ * @{ @ingroup kernel_wfp
+ */
+
+#ifndef KERNEL_WFP_PLUGIN_H_
+#define KERNEL_WFP_PLUGIN_H_
+
+#include <library.h>
+#include <plugins/plugin.h>
+
+typedef struct kernel_wfp_plugin_t kernel_wfp_plugin_t;
+
+/**
+ * Windows Filter Platform based IPsec backend plugin.
+ */
+struct kernel_wfp_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	plugin_t plugin;
+};
+
+#endif /** KERNEL_WFP_PLUGIN_H_ @}*/