Moved all kernel plugins to libhydra.

1 files changed, 0 insertions, 2172 deletions

diff --git a/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_ipsec.c b/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_ipsec.c
deleted file mode 100644
index 735978317..000000000
--- a/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_ipsec.c
+++ /dev/null
@@ -1,2172 +0,0 @@
-/*
- * Copyright (C) 2008-2010 Tobias Brunner
- * Copyright (C) 2008 Andreas Steffen
- * 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 <sys/types.h>
-#include <sys/socket.h>
-
-#ifdef __FreeBSD__
-#include <limits.h> /* for LONG_MAX */
-#endif
-
-#ifdef HAVE_NET_PFKEYV2_H
-#include <net/pfkeyv2.h>
-#else
-#include <stdint.h>
-#include <linux/pfkeyv2.h>
-#endif
-
-#ifdef SADB_X_EXT_NAT_T_TYPE
-#define HAVE_NATT
-#endif
-
-#ifdef HAVE_NETIPSEC_IPSEC_H
-#include <netipsec/ipsec.h>
-#elif defined(HAVE_NETINET6_IPSEC_H)
-#include <netinet6/ipsec.h>
-#else
-#include <linux/ipsec.h>
-#endif
-
-#ifdef HAVE_NATT
-#ifdef HAVE_LINUX_UDP_H
-#include <linux/udp.h>
-#else
-#include <netinet/udp.h>
-#endif /*HAVE_LINUX_UDP_H*/
-#endif /*HAVE_NATT*/
-
-#include <unistd.h>
-#include <time.h>
-#include <errno.h>
-
-#include "kernel_pfkey_ipsec.h"
-
-#include <hydra.h>
-#include <daemon.h>
-#include <utils/host.h>
-#include <threading/thread.h>
-#include <threading/mutex.h>
-#include <processing/jobs/callback_job.h>
-
-/** non linux specific */
-#ifndef IPPROTO_COMP
-#ifdef IPPROTO_IPCOMP
-#define IPPROTO_COMP IPPROTO_IPCOMP
-#endif
-#endif
-
-#ifndef SADB_X_AALG_SHA2_256HMAC
-#define SADB_X_AALG_SHA2_256HMAC SADB_X_AALG_SHA2_256
-#define SADB_X_AALG_SHA2_384HMAC SADB_X_AALG_SHA2_384
-#define SADB_X_AALG_SHA2_512HMAC SADB_X_AALG_SHA2_512
-#endif
-
-#ifndef SADB_X_EALG_AESCBC
-#define SADB_X_EALG_AESCBC SADB_X_EALG_AES
-#endif
-
-#ifndef SADB_X_EALG_CASTCBC
-#define SADB_X_EALG_CASTCBC SADB_X_EALG_CAST128CBC
-#endif
-
-#ifndef SOL_IP
-#define SOL_IP IPPROTO_IP
-#define SOL_IPV6 IPPROTO_IPV6
-#endif
-
-/** from linux/in.h */
-#ifndef IP_IPSEC_POLICY
-#define IP_IPSEC_POLICY 16
-#endif
-
-/** missing on uclibc */
-#ifndef IPV6_IPSEC_POLICY
-#define IPV6_IPSEC_POLICY 34
-#endif
-
-/** default priority of installed policies */
-#define PRIO_LOW 3000
-#define PRIO_HIGH 2000
-
-#ifdef __APPLE__
-/** from xnu/bsd/net/pfkeyv2.h */
-#define SADB_X_EXT_NATT 0x002
-	struct sadb_sa_2 {
-		struct sadb_sa	sa;
-		u_int16_t		sadb_sa_natt_port;
-		u_int16_t		sadb_reserved0;
-		u_int32_t		sadb_reserved1;
-	};
-#endif
-
-/** buffer size for PF_KEY messages */
-#define PFKEY_BUFFER_SIZE 4096
-
-/** PF_KEY messages are 64 bit aligned */
-#define PFKEY_ALIGNMENT 8
-/** aligns len to 64 bits */
-#define PFKEY_ALIGN(len) (((len) + PFKEY_ALIGNMENT - 1) & ~(PFKEY_ALIGNMENT - 1))
-/** calculates the properly padded length in 64 bit chunks */
-#define PFKEY_LEN(len) ((PFKEY_ALIGN(len) / PFKEY_ALIGNMENT))
-/** calculates user mode length i.e. in bytes */
-#define PFKEY_USER_LEN(len) ((len) * PFKEY_ALIGNMENT)
-
-/** given a PF_KEY message header and an extension this updates the length in the header */
-#define PFKEY_EXT_ADD(msg, ext) ((msg)->sadb_msg_len += ((struct sadb_ext*)ext)->sadb_ext_len)
-/** given a PF_KEY message header this returns a pointer to the next extension */
-#define PFKEY_EXT_ADD_NEXT(msg) ((struct sadb_ext*)(((char*)(msg)) + PFKEY_USER_LEN((msg)->sadb_msg_len)))
-/** copy an extension and append it to a PF_KEY message */
-#define PFKEY_EXT_COPY(msg, ext) (PFKEY_EXT_ADD(msg, memcpy(PFKEY_EXT_ADD_NEXT(msg), ext, PFKEY_USER_LEN(((struct sadb_ext*)ext)->sadb_ext_len))))
-/** given a PF_KEY extension this returns a pointer to the next extension */
-#define PFKEY_EXT_NEXT(ext) ((struct sadb_ext*)(((char*)(ext)) + PFKEY_USER_LEN(((struct sadb_ext*)ext)->sadb_ext_len)))
-/** given a PF_KEY extension this returns a pointer to the next extension also updates len (len in 64 bit words) */
-#define PFKEY_EXT_NEXT_LEN(ext,len) ((len) -= (ext)->sadb_ext_len, PFKEY_EXT_NEXT(ext))
-/** true if ext has a valid length and len is large enough to contain ext (assuming len in 64 bit words) */
-#define PFKEY_EXT_OK(ext,len) ((len) >= PFKEY_LEN(sizeof(struct sadb_ext)) && \
-				(ext)->sadb_ext_len >= PFKEY_LEN(sizeof(struct sadb_ext)) && \
-				(ext)->sadb_ext_len <= (len))
-
-typedef struct private_kernel_pfkey_ipsec_t private_kernel_pfkey_ipsec_t;
-
-/**
- * Private variables and functions of kernel_pfkey class.
- */
-struct private_kernel_pfkey_ipsec_t
-{
-	/**
-	 * Public part of the kernel_pfkey_t object.
-	 */
-	kernel_pfkey_ipsec_t public;
-
-	/**
-	 * mutex to lock access to various lists
-	 */
-	mutex_t *mutex;
-
-	/**
-	 * List of installed policies (policy_entry_t)
-	 */
-	linked_list_t *policies;
-
-	/**
-	 * whether to install routes along policies
-	 */
-	bool install_routes;
-
-	/**
-	 * job receiving PF_KEY events
-	 */
-	callback_job_t *job;
-
-	/**
-	 * mutex to lock access to the PF_KEY socket
-	 */
-	mutex_t *mutex_pfkey;
-
-	/**
-	 * PF_KEY socket to communicate with the kernel
-	 */
-	int socket;
-
-	/**
-	 * PF_KEY socket to receive acquire and expire events
-	 */
-	int socket_events;
-
-	/**
-	 * sequence number for messages sent to the kernel
-	 */
-	int seq;
-};
-
-typedef struct route_entry_t route_entry_t;
-
-/**
- * installed routing entry
- */
-struct route_entry_t {
-	/** Name of the interface the route is bound to */
-	char *if_name;
-
-	/** Source ip of the route */
-	host_t *src_ip;
-
-	/** gateway for this route */
-	host_t *gateway;
-
-	/** Destination net */
-	chunk_t dst_net;
-
-	/** Destination net prefixlen */
-	u_int8_t prefixlen;
-};
-
-/**
- * destroy an route_entry_t object
- */
-static void route_entry_destroy(route_entry_t *this)
-{
-	free(this->if_name);
-	DESTROY_IF(this->src_ip);
-	DESTROY_IF(this->gateway);
-	chunk_free(&this->dst_net);
-	free(this);
-}
-
-typedef struct policy_entry_t policy_entry_t;
-
-/**
- * installed kernel policy.
- */
-struct policy_entry_t {
-
-	/** reqid of this policy */
-	u_int32_t reqid;
-
-	/** index assigned by the kernel */
-	u_int32_t index;
-
-	/** direction of this policy: in, out, forward */
-	u_int8_t direction;
-
-	/** parameters of installed policy */
-	struct {
-		/** subnet and port */
-		host_t *net;
-		/** subnet mask */
-		u_int8_t mask;
-		/** protocol */
-		u_int8_t proto;
-	} src, dst;
-
-	/** associated route installed for this policy */
-	route_entry_t *route;
-
-	/** by how many CHILD_SA's this policy is used */
-	u_int refcount;
-};
-
-/**
- * create a policy_entry_t object
- */
-static policy_entry_t *create_policy_entry(traffic_selector_t *src_ts,
-		traffic_selector_t *dst_ts, policy_dir_t dir, u_int32_t reqid)
-{
-	policy_entry_t *policy = malloc_thing(policy_entry_t);
-	policy->reqid = reqid;
-	policy->index = 0;
-	policy->direction = dir;
-	policy->route = NULL;
-	policy->refcount = 0;
-
-	src_ts->to_subnet(src_ts, &policy->src.net, &policy->src.mask);
-	dst_ts->to_subnet(dst_ts, &policy->dst.net, &policy->dst.mask);
-
-	/* src or dest proto may be "any" (0), use more restrictive one */
-	policy->src.proto = max(src_ts->get_protocol(src_ts), dst_ts->get_protocol(dst_ts));
-	policy->src.proto = policy->src.proto ? policy->src.proto : IPSEC_PROTO_ANY;
-	policy->dst.proto = policy->src.proto;
-
-	return policy;
-}
-
-/**
- * destroy a policy_entry_t object
- */
-static void policy_entry_destroy(policy_entry_t *this)
-{
-	DESTROY_IF(this->src.net);
-	DESTROY_IF(this->dst.net);
-	if (this->route)
-	{
-		route_entry_destroy(this->route);
-	}
-	free(this);
-}
-
-/**
- * compares two policy_entry_t
- */
-static inline bool policy_entry_equals(policy_entry_t *current, policy_entry_t *policy)
-{
-	return current->direction == policy->direction &&
-		   current->src.proto == policy->src.proto &&
-		   current->dst.proto == policy->dst.proto &&
-		   current->src.mask == policy->src.mask &&
-		   current->dst.mask == policy->dst.mask &&
-		   current->src.net->equals(current->src.net, policy->src.net) &&
-		   current->dst.net->equals(current->dst.net, policy->dst.net);
-}
-
-/**
- * compare the given kernel index with that of a policy
- */
-static inline bool policy_entry_match_byindex(policy_entry_t *current, u_int32_t *index)
-{
-	return current->index == *index;
-}
-
-typedef struct pfkey_msg_t pfkey_msg_t;
-
-struct pfkey_msg_t
-{
-	/**
-	 * PF_KEY message base
-	 */
-	struct sadb_msg *msg;
-
-	/**
-	 * PF_KEY message extensions
-	 */
-	union {
-		struct sadb_ext *ext[SADB_EXT_MAX + 1];
-		struct {
-			struct sadb_ext *reserved;				/* SADB_EXT_RESERVED */
-			struct sadb_sa *sa;						/* SADB_EXT_SA */
-			struct sadb_lifetime *lft_current;		/* SADB_EXT_LIFETIME_CURRENT */
-			struct sadb_lifetime *lft_hard;			/* SADB_EXT_LIFETIME_HARD */
-			struct sadb_lifetime *lft_soft;			/* SADB_EXT_LIFETIME_SOFT */
-			struct sadb_address *src;				/* SADB_EXT_ADDRESS_SRC */
-			struct sadb_address *dst;				/* SADB_EXT_ADDRESS_DST */
-			struct sadb_address *proxy;				/* SADB_EXT_ADDRESS_PROXY */
-			struct sadb_key *key_auth;				/* SADB_EXT_KEY_AUTH */
-			struct sadb_key *key_encr;				/* SADB_EXT_KEY_ENCRYPT */
-			struct sadb_ident *id_src;				/* SADB_EXT_IDENTITY_SRC */
-			struct sadb_ident *id_dst;				/* SADB_EXT_IDENTITY_DST */
-			struct sadb_sens *sensitivity;			/* SADB_EXT_SENSITIVITY */
-			struct sadb_prop *proposal;				/* SADB_EXT_PROPOSAL */
-			struct sadb_supported *supported_auth;	/* SADB_EXT_SUPPORTED_AUTH */
-			struct sadb_supported *supported_encr;	/* SADB_EXT_SUPPORTED_ENCRYPT */
-			struct sadb_spirange *spirange;			/* SADB_EXT_SPIRANGE */
-			struct sadb_x_kmprivate *x_kmprivate;	/* SADB_X_EXT_KMPRIVATE */
-			struct sadb_x_policy *x_policy;			/* SADB_X_EXT_POLICY */
-			struct sadb_x_sa2 *x_sa2;				/* SADB_X_EXT_SA2 */
-			struct sadb_x_nat_t_type *x_natt_type;	/* SADB_X_EXT_NAT_T_TYPE */
-			struct sadb_x_nat_t_port *x_natt_sport;	/* SADB_X_EXT_NAT_T_SPORT */
-			struct sadb_x_nat_t_port *x_natt_dport;	/* SADB_X_EXT_NAT_T_DPORT */
-			struct sadb_address *x_natt_oa;			/* SADB_X_EXT_NAT_T_OA */
-			struct sadb_x_sec_ctx *x_sec_ctx;		/* SADB_X_EXT_SEC_CTX */
-			struct sadb_x_kmaddress *x_kmaddress;	/* SADB_X_EXT_KMADDRESS */
-		} __attribute__((__packed__));
-	};
-};
-
-ENUM(sadb_ext_type_names, SADB_EXT_RESERVED, SADB_EXT_MAX,
-	"SADB_EXT_RESERVED",
-	"SADB_EXT_SA",
-	"SADB_EXT_LIFETIME_CURRENT",
-	"SADB_EXT_LIFETIME_HARD",
-	"SADB_EXT_LIFETIME_SOFT",
-	"SADB_EXT_ADDRESS_SRC",
-	"SADB_EXT_ADDRESS_DST",
-	"SADB_EXT_ADDRESS_PROXY",
-	"SADB_EXT_KEY_AUTH",
-	"SADB_EXT_KEY_ENCRYPT",
-	"SADB_EXT_IDENTITY_SRC",
-	"SADB_EXT_IDENTITY_DST",
-	"SADB_EXT_SENSITIVITY",
-	"SADB_EXT_PROPOSAL",
-	"SADB_EXT_SUPPORTED_AUTH",
-	"SADB_EXT_SUPPORTED_ENCRYPT",
-	"SADB_EXT_SPIRANGE",
-	"SADB_X_EXT_KMPRIVATE",
-	"SADB_X_EXT_POLICY",
-	"SADB_X_EXT_SA2",
-	"SADB_X_EXT_NAT_T_TYPE",
-	"SADB_X_EXT_NAT_T_SPORT",
-	"SADB_X_EXT_NAT_T_DPORT",
-	"SADB_X_EXT_NAT_T_OA",
-	"SADB_X_EXT_SEC_CTX",
-	"SADB_X_EXT_KMADDRESS"
-);
-
-/**
- * convert a protocol identifier to the PF_KEY sa type
- */
-static u_int8_t proto2satype(u_int8_t proto)
-{
-	switch (proto)
-	{
-		case IPPROTO_ESP:
-			return SADB_SATYPE_ESP;
-		case IPPROTO_AH:
-			return SADB_SATYPE_AH;
-		case IPPROTO_COMP:
-			return SADB_X_SATYPE_IPCOMP;
-		default:
-			return proto;
-	}
-}
-
-/**
- * convert a PF_KEY sa type to a protocol identifier
- */
-static u_int8_t satype2proto(u_int8_t satype)
-{
-	switch (satype)
-	{
-		case SADB_SATYPE_ESP:
-			return IPPROTO_ESP;
-		case SADB_SATYPE_AH:
-			return IPPROTO_AH;
-		case SADB_X_SATYPE_IPCOMP:
-			return IPPROTO_COMP;
-		default:
-			return satype;
-	}
-}
-
-/**
- * convert the general ipsec mode to the one defined in ipsec.h
- */
-static u_int8_t mode2kernel(ipsec_mode_t mode)
-{
-	switch (mode)
-	{
-		case MODE_TRANSPORT:
-			return IPSEC_MODE_TRANSPORT;
-		case MODE_TUNNEL:
-			return IPSEC_MODE_TUNNEL;
-#ifdef HAVE_IPSEC_MODE_BEET
-		case MODE_BEET:
-			return IPSEC_MODE_BEET;
-#endif
-		default:
-			return mode;
-	}
-}
-
-/**
- * convert the general policy direction to the one defined in ipsec.h
- */
-static u_int8_t dir2kernel(policy_dir_t dir)
-{
-	switch (dir)
-	{
-		case POLICY_IN:
-			return IPSEC_DIR_INBOUND;
-		case POLICY_OUT:
-			return IPSEC_DIR_OUTBOUND;
-#ifdef HAVE_IPSEC_DIR_FWD
-		case POLICY_FWD:
-			return IPSEC_DIR_FWD;
-#endif
-		default:
-			return IPSEC_DIR_INVALID;
-	}
-}
-
-#ifdef SADB_X_MIGRATE
-/**
- * convert the policy direction in ipsec.h to the general one.
- */
-static policy_dir_t kernel2dir(u_int8_t  dir)
-{
-	switch (dir)
-	{
-		case IPSEC_DIR_INBOUND:
-			return POLICY_IN;
-		case IPSEC_DIR_OUTBOUND:
-			return POLICY_OUT;
-#ifdef HAVE_IPSEC_DIR_FWD
-		case IPSEC_DIR_FWD:
-			return POLICY_FWD;
-#endif
-		default:
-			return dir;
-	}
-}
-#endif /*SADB_X_MIGRATE*/
-
-typedef struct kernel_algorithm_t kernel_algorithm_t;
-
-/**
- * Mapping of IKEv2 algorithms to PF_KEY algorithms
- */
-struct kernel_algorithm_t {
-	/**
-	 * Identifier specified in IKEv2
-	 */
-	int ikev2;
-
-	/**
-	 * Identifier as defined in pfkeyv2.h
-	 */
-	int kernel;
-};
-
-#define END_OF_LIST -1
-
-/**
- * Algorithms for encryption
- */
-static kernel_algorithm_t encryption_algs[] = {
-/*	{ENCR_DES_IV64,				0							}, */
-	{ENCR_DES,					SADB_EALG_DESCBC			},
-	{ENCR_3DES,					SADB_EALG_3DESCBC			},
-/*	{ENCR_RC5,					0							}, */
-/*	{ENCR_IDEA,					0							}, */
-	{ENCR_CAST,					SADB_X_EALG_CASTCBC			},
-	{ENCR_BLOWFISH,				SADB_X_EALG_BLOWFISHCBC		},
-/*	{ENCR_3IDEA,				0							}, */
-/*	{ENCR_DES_IV32,				0							}, */
-	{ENCR_NULL,					SADB_EALG_NULL				},
-	{ENCR_AES_CBC,				SADB_X_EALG_AESCBC			},
-/*	{ENCR_AES_CTR,				SADB_X_EALG_AESCTR			}, */
-/*  {ENCR_AES_CCM_ICV8,			SADB_X_EALG_AES_CCM_ICV8	}, */
-/*	{ENCR_AES_CCM_ICV12,		SADB_X_EALG_AES_CCM_ICV12	}, */
-/*	{ENCR_AES_CCM_ICV16,		SADB_X_EALG_AES_CCM_ICV16	}, */
-/*	{ENCR_AES_GCM_ICV8,			SADB_X_EALG_AES_GCM_ICV8	}, */
-/*	{ENCR_AES_GCM_ICV12,		SADB_X_EALG_AES_GCM_ICV12	}, */
-/*	{ENCR_AES_GCM_ICV16,		SADB_X_EALG_AES_GCM_ICV16	}, */
-	{END_OF_LIST,				0							},
-};
-
-/**
- * Algorithms for integrity protection
- */
-static kernel_algorithm_t integrity_algs[] = {
-	{AUTH_HMAC_MD5_96,			SADB_AALG_MD5HMAC			},
-	{AUTH_HMAC_SHA1_96,			SADB_AALG_SHA1HMAC			},
-	{AUTH_HMAC_SHA2_256_128,	SADB_X_AALG_SHA2_256HMAC	},
-	{AUTH_HMAC_SHA2_384_192,	SADB_X_AALG_SHA2_384HMAC	},
-	{AUTH_HMAC_SHA2_512_256,	SADB_X_AALG_SHA2_512HMAC	},
-/*	{AUTH_DES_MAC,				0,							}, */
-/*	{AUTH_KPDK_MD5,				0,							}, */
-#ifdef SADB_X_AALG_AES_XCBC_MAC
-	{AUTH_AES_XCBC_96,			SADB_X_AALG_AES_XCBC_MAC,	},
-#endif
-	{END_OF_LIST,				0,							},
-};
-
-#if 0
-/**
- * Algorithms for IPComp, unused yet
- */
-static kernel_algorithm_t compression_algs[] = {
-/*	{IPCOMP_OUI,				0							}, */
-	{IPCOMP_DEFLATE,			SADB_X_CALG_DEFLATE			},
-	{IPCOMP_LZS,				SADB_X_CALG_LZS				},
-	{IPCOMP_LZJH,				SADB_X_CALG_LZJH			},
-	{END_OF_LIST,				0							},
-};
-#endif
-
-/**
- * Look up a kernel algorithm ID and its key size
- */
-static int lookup_algorithm(kernel_algorithm_t *list, int ikev2)
-{
-	while (list->ikev2 != END_OF_LIST)
-	{
-		if (ikev2 == list->ikev2)
-		{
-			return list->kernel;
-		}
-		list++;
-	}
-	return 0;
-}
-
-/**
- * Copy a host_t as sockaddr_t to the given memory location. Ports are
- * reset to zero as per RFC 2367.
- * @return		the number of bytes copied
- */
-static size_t hostcpy(void *dest, host_t *host)
-{
-	sockaddr_t *addr = host->get_sockaddr(host), *dest_addr = dest;
-	socklen_t *len = host->get_sockaddr_len(host);
-	memcpy(dest, addr, *len);
-#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
-	dest_addr->sa_len = *len;
-#endif
-	switch (dest_addr->sa_family)
-	{
-		case AF_INET:
-		{
-			struct sockaddr_in *sin = dest;
-			sin->sin_port = 0;
-			break;
-		}
-		case AF_INET6:
-		{
-			struct sockaddr_in6 *sin6 = dest;
-			sin6->sin6_port = 0;
-			break;
-		}
-	}
-	return *len;
-}
-
-/**
- * add a host behind an sadb_address extension
- */
-static void host2ext(host_t *host, struct sadb_address *ext)
-{
-	size_t len = hostcpy(ext + 1, host);
-	ext->sadb_address_len = PFKEY_LEN(sizeof(*ext) + len);
-}
-
-/**
- * add a host to the given sadb_msg
- */
-static void add_addr_ext(struct sadb_msg *msg, host_t *host, u_int16_t type,
-						 u_int8_t proto, u_int8_t prefixlen)
-{
-	struct sadb_address *addr = (struct sadb_address*)PFKEY_EXT_ADD_NEXT(msg);
-	addr->sadb_address_exttype = type;
-	addr->sadb_address_proto = proto;
-	addr->sadb_address_prefixlen = prefixlen;
-	host2ext(host, addr);
-	PFKEY_EXT_ADD(msg, addr);
-}
-
-/**
- * adds an empty address extension to the given sadb_msg
- */
-static void add_anyaddr_ext(struct sadb_msg *msg, int family, u_int8_t type)
-{
-	socklen_t len = (family == AF_INET) ? sizeof(struct sockaddr_in) :
-										  sizeof(struct sockaddr_in6);
-	struct sadb_address *addr = (struct sadb_address*)PFKEY_EXT_ADD_NEXT(msg);
-	addr->sadb_address_exttype = type;
-	sockaddr_t *saddr = (sockaddr_t*)(addr + 1);
-	saddr->sa_family = family;
-#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
-	saddr->sa_len = len;
-#endif
-	addr->sadb_address_len = PFKEY_LEN(sizeof(*addr) + len);
-	PFKEY_EXT_ADD(msg, addr);
-}
-
-#ifdef HAVE_NATT
-/**
- * add udp encap extensions to a sadb_msg
- */
-static void add_encap_ext(struct sadb_msg *msg, host_t *src, host_t *dst)
-{
-	struct sadb_x_nat_t_type* nat_type;
-	struct sadb_x_nat_t_port* nat_port;
-
-	nat_type = (struct sadb_x_nat_t_type*)PFKEY_EXT_ADD_NEXT(msg);
-	nat_type->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE;
-	nat_type->sadb_x_nat_t_type_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_type));
-	nat_type->sadb_x_nat_t_type_type = UDP_ENCAP_ESPINUDP;
-	PFKEY_EXT_ADD(msg, nat_type);
-
-	nat_port = (struct sadb_x_nat_t_port*)PFKEY_EXT_ADD_NEXT(msg);
-	nat_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT;
-	nat_port->sadb_x_nat_t_port_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_port));
-	nat_port->sadb_x_nat_t_port_port = htons(src->get_port(src));
-	PFKEY_EXT_ADD(msg, nat_port);
-
-	nat_port = (struct sadb_x_nat_t_port*)PFKEY_EXT_ADD_NEXT(msg);
-	nat_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT;
-	nat_port->sadb_x_nat_t_port_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_port));
-	nat_port->sadb_x_nat_t_port_port = htons(dst->get_port(dst));
-	PFKEY_EXT_ADD(msg, nat_port);
-}
-#endif /*HAVE_NATT*/
-
-/**
- * Convert a sadb_address to a traffic_selector
- */
-static traffic_selector_t* sadb_address2ts(struct sadb_address *address)
-{
-	traffic_selector_t *ts;
-	host_t *host;
-
-	/* The Linux 2.6 kernel does not set the protocol and port information
-	 * in the src and dst sadb_address extensions of the SADB_ACQUIRE message.
-	 */
-	host = host_create_from_sockaddr((sockaddr_t*)&address[1])	;
-	ts = traffic_selector_create_from_subnet(host, address->sadb_address_prefixlen,
-				address->sadb_address_proto, host->get_port(host));
-	return ts;
-}
-
-/**
- * Parses a pfkey message received from the kernel
- */
-static status_t parse_pfkey_message(struct sadb_msg *msg, pfkey_msg_t *out)
-{
-	struct sadb_ext* ext;
-	size_t len;
-
-	memset(out, 0, sizeof(pfkey_msg_t));
-	out->msg = msg;
-
-	len = msg->sadb_msg_len;
-	len -= PFKEY_LEN(sizeof(struct sadb_msg));
-
-	ext = (struct sadb_ext*)(((char*)msg) + sizeof(struct sadb_msg));
-
-	while (len >= PFKEY_LEN(sizeof(struct sadb_ext)))
-	{
-		DBG3(DBG_KNL, "  %N", sadb_ext_type_names, ext->sadb_ext_type);
-		if (ext->sadb_ext_len < PFKEY_LEN(sizeof(struct sadb_ext)) ||
-			ext->sadb_ext_len > len)
-		{
-			DBG1(DBG_KNL, "length of %N extension is invalid",
-						   sadb_ext_type_names, ext->sadb_ext_type);
-			break;
-		}
-
-		if ((ext->sadb_ext_type > SADB_EXT_MAX) || (!ext->sadb_ext_type))
-		{
-			DBG1(DBG_KNL, "type of PF_KEY extension (%d) is invalid", ext->sadb_ext_type);
-			break;
-		}
-
-		if (out->ext[ext->sadb_ext_type])
-		{
-			DBG1(DBG_KNL, "duplicate %N extension",
-						   sadb_ext_type_names, ext->sadb_ext_type);
-			break;
-		}
-
-		out->ext[ext->sadb_ext_type] = ext;
-		ext = PFKEY_EXT_NEXT_LEN(ext, len);
-	}
-
-	if (len)
-	{
-		DBG1(DBG_KNL, "PF_KEY message length is invalid");
-		return FAILED;
-	}
-
-	return SUCCESS;
-}
-
-/**
- * Send a message to a specific PF_KEY socket and handle the response.
- */
-static status_t pfkey_send_socket(private_kernel_pfkey_ipsec_t *this, int socket,
-					struct sadb_msg *in, struct sadb_msg **out, size_t *out_len)
-{
-	unsigned char buf[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg;
-	int in_len, len;
-
-	this->mutex_pfkey->lock(this->mutex_pfkey);
-
-	/* FIXME: our usage of sequence numbers is probably wrong. check RFC 2367,
-	 * in particular the behavior in response to an SADB_ACQUIRE. */
-	in->sadb_msg_seq = ++this->seq;
-	in->sadb_msg_pid = getpid();
-
-	in_len = PFKEY_USER_LEN(in->sadb_msg_len);
-
-	while (TRUE)
-	{
-		len = send(socket, in, in_len, 0);
-
-		if (len != in_len)
-		{
-			if (errno == EINTR)
-			{
-				/* interrupted, try again */
-				continue;
-			}
-			this->mutex_pfkey->unlock(this->mutex_pfkey);
-			DBG1(DBG_KNL, "error sending to PF_KEY socket: %s", strerror(errno));
-			return FAILED;
-		}
-		break;
-	}
-
-	while (TRUE)
-	{
-		msg = (struct sadb_msg*)buf;
-
-		len = recv(socket, buf, sizeof(buf), 0);
-
-		if (len < 0)
-		{
-			if (errno == EINTR)
-			{
-				DBG1(DBG_KNL, "got interrupted");
-				/* interrupted, try again */
-				continue;
-			}
-			DBG1(DBG_KNL, "error reading from PF_KEY socket: %s", strerror(errno));
-			this->mutex_pfkey->unlock(this->mutex_pfkey);
-			return FAILED;
-		}
-		if (len < sizeof(struct sadb_msg) ||
-			msg->sadb_msg_len < PFKEY_LEN(sizeof(struct sadb_msg)))
-		{
-			DBG1(DBG_KNL, "received corrupted PF_KEY message");
-			this->mutex_pfkey->unlock(this->mutex_pfkey);
-			return FAILED;
-		}
-		if (msg->sadb_msg_len > len / PFKEY_ALIGNMENT)
-		{
-			DBG1(DBG_KNL, "buffer was too small to receive the complete PF_KEY message");
-			this->mutex_pfkey->unlock(this->mutex_pfkey);
-			return FAILED;
-		}
-		if (msg->sadb_msg_pid != in->sadb_msg_pid)
-		{
-			DBG2(DBG_KNL, "received PF_KEY message is not intended for us");
-			continue;
-		}
-		if (msg->sadb_msg_seq != this->seq)
-		{
-			DBG1(DBG_KNL, "received PF_KEY message with unexpected sequence "
-				 "number, was %d expected %d", msg->sadb_msg_seq, this->seq);
-			if (msg->sadb_msg_seq == 0)
-			{
-				/* FreeBSD and Mac OS X do this for the response to
-				 * SADB_X_SPDGET (but not for the response to SADB_GET).
-				 * FreeBSD: 'key_spdget' in /usr/src/sys/netipsec/key.c. */
-			}
-			else if (msg->sadb_msg_seq < this->seq)
-			{
-				continue;
-			}
-			else
-			{
-				this->mutex_pfkey->unlock(this->mutex_pfkey);
-				return FAILED;
-			}
-		}
-		if (msg->sadb_msg_type != in->sadb_msg_type)
-		{
-			DBG2(DBG_KNL, "received PF_KEY message of wrong type, "
-					"was %d expected %d, ignoring",
-					msg->sadb_msg_type, in->sadb_msg_type);
-		}
-		break;
-	}
-
-	*out_len = len;
-	*out = (struct sadb_msg*)malloc(len);
-	memcpy(*out, buf, len);
-
-	this->mutex_pfkey->unlock(this->mutex_pfkey);
-
-	return SUCCESS;
-}
-
-/**
- * Send a message to the default PF_KEY socket and handle the response.
- */
-static status_t pfkey_send(private_kernel_pfkey_ipsec_t *this,
-					struct sadb_msg *in, struct sadb_msg **out, size_t *out_len)
-{
-	return pfkey_send_socket(this, this->socket, in, out, out_len);
-}
-
-/**
- * Process a SADB_ACQUIRE message from the kernel
- */
-static void process_acquire(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg)
-{
-	pfkey_msg_t response;
-	u_int32_t index, reqid = 0;
-	traffic_selector_t *src_ts, *dst_ts;
-	policy_entry_t *policy;
-
-	switch (msg->sadb_msg_satype)
-	{
-		case SADB_SATYPE_UNSPEC:
-		case SADB_SATYPE_ESP:
-		case SADB_SATYPE_AH:
-			break;
-		default:
-			/* acquire for AH/ESP only */
-			return;
-	}
-	DBG2(DBG_KNL, "received an SADB_ACQUIRE");
-
-	if (parse_pfkey_message(msg, &response) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "parsing SADB_ACQUIRE from kernel failed");
-		return;
-	}
-
-	index = response.x_policy->sadb_x_policy_id;
-	this->mutex->lock(this->mutex);
-	if (this->policies->find_first(this->policies,
-			(linked_list_match_t)policy_entry_match_byindex, (void**)&policy, &index) == SUCCESS)
-	{
-		reqid = policy->reqid;
-	}
-	else
-	{
-		DBG1(DBG_KNL, "received an SADB_ACQUIRE with policy id %d but no"
-					  " matching policy found", index);
-	}
-	src_ts = sadb_address2ts(response.src);
-	dst_ts = sadb_address2ts(response.dst);
-	this->mutex->unlock(this->mutex);
-
-	hydra->kernel_interface->acquire(hydra->kernel_interface, reqid, src_ts,
-									 dst_ts);
-}
-
-/**
- * Process a SADB_EXPIRE message from the kernel
- */
-static void process_expire(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg)
-{
-	pfkey_msg_t response;
-	u_int8_t protocol;
-	u_int32_t spi, reqid;
-	bool hard;
-
-	DBG2(DBG_KNL, "received an SADB_EXPIRE");
-
-	if (parse_pfkey_message(msg, &response) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "parsing SADB_EXPIRE from kernel failed");
-		return;
-	}
-
-	protocol = satype2proto(msg->sadb_msg_satype);
-	spi = response.sa->sadb_sa_spi;
-	reqid = response.x_sa2->sadb_x_sa2_reqid;
-	hard = response.lft_hard != NULL;
-
-	if (protocol != IPPROTO_ESP && protocol != IPPROTO_AH)
-	{
-		DBG2(DBG_KNL, "ignoring SADB_EXPIRE for SA with SPI %.8x and reqid {%u} "
-					  "which is not a CHILD_SA", ntohl(spi), reqid);
-		return;
-	}
-
-	hydra->kernel_interface->expire(hydra->kernel_interface, reqid, protocol,
-									spi, hard);
-}
-
-#ifdef SADB_X_MIGRATE
-/**
- * Process a SADB_X_MIGRATE message from the kernel
- */
-static void process_migrate(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg)
-{
-	pfkey_msg_t response;
-	traffic_selector_t *src_ts, *dst_ts;
-	policy_dir_t dir;
-	u_int32_t reqid = 0;
-	host_t *local = NULL, *remote = NULL;
-
-	DBG2(DBG_KNL, "received an SADB_X_MIGRATE");
-
-	if (parse_pfkey_message(msg, &response) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "parsing SADB_X_MIGRATE from kernel failed");
-		return;
-	}
-	src_ts = sadb_address2ts(response.src);
-	dst_ts = sadb_address2ts(response.dst);
-	dir = kernel2dir(response.x_policy->sadb_x_policy_dir);
-	DBG2(DBG_KNL, "  policy %R === %R %N, id %u", src_ts, dst_ts,
-					 policy_dir_names, dir);
-
-	/* SADB_X_EXT_KMADDRESS is not present in unpatched kernels < 2.6.28 */
-	if (response.x_kmaddress)
-	{
-		sockaddr_t *local_addr, *remote_addr;
-		u_int32_t local_len;
-
-		local_addr  = (sockaddr_t*)&response.x_kmaddress[1];
-		local = host_create_from_sockaddr(local_addr);
-		local_len = (local_addr->sa_family == AF_INET6)?
-					sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in);
-		remote_addr = (sockaddr_t*)((u_int8_t*)local_addr + local_len);
-		remote = host_create_from_sockaddr(remote_addr);
-		DBG2(DBG_KNL, "  kmaddress: %H...%H", local, remote);
-	}
-
-	if (src_ts && dst_ts && local && remote)
-	{
-		hydra->kernel_interface->migrate(hydra->kernel_interface, reqid,
-										 src_ts, dst_ts, dir, local, remote);
-	}
-	else
-	{
-		DESTROY_IF(src_ts);
-		DESTROY_IF(dst_ts);
-		DESTROY_IF(local);
-		DESTROY_IF(remote);
-	}
-}
-#endif /*SADB_X_MIGRATE*/
-
-#ifdef SADB_X_NAT_T_NEW_MAPPING
-/**
- * Process a SADB_X_NAT_T_NEW_MAPPING message from the kernel
- */
-static void process_mapping(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg)
-{
-	pfkey_msg_t response;
-	u_int32_t spi, reqid;
-	host_t *host;
-
-	DBG2(DBG_KNL, "received an SADB_X_NAT_T_NEW_MAPPING");
-
-	if (parse_pfkey_message(msg, &response) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "parsing SADB_X_NAT_T_NEW_MAPPING from kernel failed");
-		return;
-	}
-
-	if (!response.x_sa2)
-	{
-		DBG1(DBG_KNL, "received SADB_X_NAT_T_NEW_MAPPING is missing required "
-					  "information");
-		return;
-	}
-
-	spi = response.sa->sadb_sa_spi;
-	reqid = response.x_sa2->sadb_x_sa2_reqid;
-
-	if (satype2proto(msg->sadb_msg_satype) == IPPROTO_ESP)
-	{
-		sockaddr_t *sa = (sockaddr_t*)(response.dst + 1);
-		switch (sa->sa_family)
-		{
-			case AF_INET:
-			{
-				struct sockaddr_in *sin = (struct sockaddr_in*)sa;
-				sin->sin_port = htons(response.x_natt_dport->sadb_x_nat_t_port_port);
-			}
-			case AF_INET6:
-			{
-				struct sockaddr_in6 *sin6 = (struct sockaddr_in6*)sa;
-				sin6->sin6_port = htons(response.x_natt_dport->sadb_x_nat_t_port_port);
-			}
-			default:
-				break;
-		}
-		host = host_create_from_sockaddr(sa);
-		if (host)
-		{
-			hydra->kernel_interface->mapping(hydra->kernel_interface, reqid,
-											 spi, host);
-		}
-	}
-}
-#endif /*SADB_X_NAT_T_NEW_MAPPING*/
-
-/**
- * Receives events from kernel
- */
-static job_requeue_t receive_events(private_kernel_pfkey_ipsec_t *this)
-{
-	unsigned char buf[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg = (struct sadb_msg*)buf;
-	int len;
-	bool oldstate;
-
-	oldstate = thread_cancelability(TRUE);
-	len = recvfrom(this->socket_events, buf, sizeof(buf), 0, NULL, 0);
-	thread_cancelability(oldstate);
-
-	if (len < 0)
-	{
-		switch (errno)
-		{
-			case EINTR:
-				/* interrupted, try again */
-				return JOB_REQUEUE_DIRECT;
-			case EAGAIN:
-				/* no data ready, select again */
-				return JOB_REQUEUE_DIRECT;
-			default:
-				DBG1(DBG_KNL, "unable to receive from PF_KEY event socket");
-				sleep(1);
-				return JOB_REQUEUE_FAIR;
-		}
-	}
-
-	if (len < sizeof(struct sadb_msg) ||
-		msg->sadb_msg_len < PFKEY_LEN(sizeof(struct sadb_msg)))
-	{
-		DBG2(DBG_KNL, "received corrupted PF_KEY message");
-		return JOB_REQUEUE_DIRECT;
-	}
-	if (msg->sadb_msg_pid != 0)
-	{	/* not from kernel. not interested, try another one */
-		return JOB_REQUEUE_DIRECT;
-	}
-	if (msg->sadb_msg_len > len / PFKEY_ALIGNMENT)
-	{
-		DBG1(DBG_KNL, "buffer was too small to receive the complete PF_KEY message");
-		return JOB_REQUEUE_DIRECT;
-	}
-
-	switch (msg->sadb_msg_type)
-	{
-		case SADB_ACQUIRE:
-			process_acquire(this, msg);
-			break;
-		case SADB_EXPIRE:
-			process_expire(this, msg);
-			break;
-#ifdef SADB_X_MIGRATE
-		case SADB_X_MIGRATE:
-			process_migrate(this, msg);
-			break;
-#endif /*SADB_X_MIGRATE*/
-#ifdef SADB_X_NAT_T_NEW_MAPPING
-		case SADB_X_NAT_T_NEW_MAPPING:
-			process_mapping(this, msg);
-			break;
-#endif /*SADB_X_NAT_T_NEW_MAPPING*/
-		default:
-			break;
-	}
-
-	return JOB_REQUEUE_DIRECT;
-}
-
-METHOD(kernel_ipsec_t, get_spi, status_t,
-	private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst,
-	u_int8_t protocol, u_int32_t reqid, u_int32_t *spi)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	struct sadb_x_sa2 *sa2;
-	struct sadb_spirange *range;
-	pfkey_msg_t response;
-	u_int32_t received_spi = 0;
-	size_t len;
-
-	memset(&request, 0, sizeof(request));
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_GETSPI;
-	msg->sadb_msg_satype = proto2satype(protocol);
-	msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-	sa2 = (struct sadb_x_sa2*)PFKEY_EXT_ADD_NEXT(msg);
-	sa2->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
-	sa2->sadb_x_sa2_len = PFKEY_LEN(sizeof(struct sadb_spirange));
-	sa2->sadb_x_sa2_reqid = reqid;
-	PFKEY_EXT_ADD(msg, sa2);
-
-	add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0);
-	add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);
-
-	range = (struct sadb_spirange*)PFKEY_EXT_ADD_NEXT(msg);
-	range->sadb_spirange_exttype = SADB_EXT_SPIRANGE;
-	range->sadb_spirange_len = PFKEY_LEN(sizeof(struct sadb_spirange));
-	range->sadb_spirange_min = 0xc0000000;
-	range->sadb_spirange_max = 0xcFFFFFFF;
-	PFKEY_EXT_ADD(msg, range);
-
-	if (pfkey_send(this, msg, &out, &len) == SUCCESS)
-	{
-		if (out->sadb_msg_errno)
-		{
-			DBG1(DBG_KNL, "allocating SPI failed: %s (%d)",
-					strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		}
-		else if (parse_pfkey_message(out, &response) == SUCCESS)
-		{
-			received_spi = response.sa->sadb_sa_spi;
-		}
-		free(out);
-	}
-
-	if (received_spi == 0)
-	{
-		return FAILED;
-	}
-
-	*spi = received_spi;
-	return SUCCESS;
-}
-
-METHOD(kernel_ipsec_t, get_cpi, status_t,
-	private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst,
-	u_int32_t reqid, u_int16_t *cpi)
-{
-	return FAILED;
-}
-
-METHOD(kernel_ipsec_t, add_sa, status_t,
-	private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst, u_int32_t spi,
-	u_int8_t protocol, u_int32_t reqid, mark_t mark,
-	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 encap, bool inbound,
-	traffic_selector_t *src_ts, traffic_selector_t *dst_ts)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	struct sadb_sa *sa;
-	struct sadb_x_sa2 *sa2;
-	struct sadb_lifetime *lft;
-	struct sadb_key *key;
-	size_t len;
-
-	memset(&request, 0, sizeof(request));
-
-	DBG2(DBG_KNL, "adding SAD entry with SPI %.8x and reqid {%u}", ntohl(spi), reqid);
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = inbound ? SADB_UPDATE : SADB_ADD;
-	msg->sadb_msg_satype = proto2satype(protocol);
-	msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-#ifdef __APPLE__
-	if (encap)
-	{
-		struct sadb_sa_2 *sa_2;
-		sa_2 = (struct sadb_sa_2*)PFKEY_EXT_ADD_NEXT(msg);
-		sa_2->sadb_sa_natt_port = dst->get_port(dst);
-		sa = &sa_2->sa;
-		sa->sadb_sa_flags |= SADB_X_EXT_NATT;
-		len = sizeof(struct sadb_sa_2);
-	}
-	else
-#endif
-	{
-		sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg);
-		len = sizeof(struct sadb_sa);
-	}
-	sa->sadb_sa_exttype = SADB_EXT_SA;
-	sa->sadb_sa_len = PFKEY_LEN(len);
-	sa->sadb_sa_spi = spi;
-	sa->sadb_sa_replay = (protocol == IPPROTO_COMP) ? 0 : 32;
-	sa->sadb_sa_auth = lookup_algorithm(integrity_algs, int_alg);
-	sa->sadb_sa_encrypt = lookup_algorithm(encryption_algs, enc_alg);
-	PFKEY_EXT_ADD(msg, sa);
-
-	sa2 = (struct sadb_x_sa2*)PFKEY_EXT_ADD_NEXT(msg);
-	sa2->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
-	sa2->sadb_x_sa2_len = PFKEY_LEN(sizeof(struct sadb_spirange));
-	sa2->sadb_x_sa2_mode = mode2kernel(mode);
-	sa2->sadb_x_sa2_reqid = reqid;
-	PFKEY_EXT_ADD(msg, sa2);
-
-	add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0);
-	add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);
-
-	lft = (struct sadb_lifetime*)PFKEY_EXT_ADD_NEXT(msg);
-	lft->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
-	lft->sadb_lifetime_len = PFKEY_LEN(sizeof(struct sadb_lifetime));
-	lft->sadb_lifetime_allocations = lifetime->packets.rekey;
-	lft->sadb_lifetime_bytes = lifetime->bytes.rekey;
-	lft->sadb_lifetime_addtime = lifetime->time.rekey;
-	lft->sadb_lifetime_usetime = 0; /* we only use addtime */
-	PFKEY_EXT_ADD(msg, lft);
-
-	lft = (struct sadb_lifetime*)PFKEY_EXT_ADD_NEXT(msg);
-	lft->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
-	lft->sadb_lifetime_len = PFKEY_LEN(sizeof(struct sadb_lifetime));
-	lft->sadb_lifetime_allocations = lifetime->packets.life;
-	lft->sadb_lifetime_bytes = lifetime->bytes.life;
-	lft->sadb_lifetime_addtime = lifetime->time.life;
-	lft->sadb_lifetime_usetime = 0; /* we only use addtime */
-	PFKEY_EXT_ADD(msg, lft);
-
-	if (enc_alg != ENCR_UNDEFINED)
-	{
-		if (!sa->sadb_sa_encrypt)
-		{
-			DBG1(DBG_KNL, "algorithm %N not supported by kernel!",
-				 encryption_algorithm_names, enc_alg);
-			return FAILED;
-		}
-		DBG2(DBG_KNL, "  using encryption algorithm %N with key size %d",
-			 encryption_algorithm_names, enc_alg, enc_key.len * 8);
-
-		key = (struct sadb_key*)PFKEY_EXT_ADD_NEXT(msg);
-		key->sadb_key_exttype = SADB_EXT_KEY_ENCRYPT;
-		key->sadb_key_bits = enc_key.len * 8;
-		key->sadb_key_len = PFKEY_LEN(sizeof(struct sadb_key) + enc_key.len);
-		memcpy(key + 1, enc_key.ptr, enc_key.len);
-
-		PFKEY_EXT_ADD(msg, key);
-	}
-
-	if (int_alg != AUTH_UNDEFINED)
-	{
-		if (!sa->sadb_sa_auth)
-		{
-			DBG1(DBG_KNL, "algorithm %N not supported by kernel!",
-					 integrity_algorithm_names, int_alg);
-			return FAILED;
-		}
-		DBG2(DBG_KNL, "  using integrity algorithm %N with key size %d",
-			 integrity_algorithm_names, int_alg, int_key.len * 8);
-
-		key = (struct sadb_key*)PFKEY_EXT_ADD_NEXT(msg);
-		key->sadb_key_exttype = SADB_EXT_KEY_AUTH;
-		key->sadb_key_bits = int_key.len * 8;
-		key->sadb_key_len = PFKEY_LEN(sizeof(struct sadb_key) + int_key.len);
-		memcpy(key + 1, int_key.ptr, int_key.len);
-
-		PFKEY_EXT_ADD(msg, key);
-	}
-
-	if (ipcomp != IPCOMP_NONE)
-	{
-		/*TODO*/
-	}
-
-#ifdef HAVE_NATT
-	if (encap)
-	{
-		add_encap_ext(msg, src, dst);
-	}
-#endif /*HAVE_NATT*/
-
-	if (pfkey_send(this, msg, &out, &len) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to add SAD entry with SPI %.8x", ntohl(spi));
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "unable to add SAD entry with SPI %.8x: %s (%d)",
-				ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		free(out);
-		return FAILED;
-	}
-
-	free(out);
-	return SUCCESS;
-}
-
-METHOD(kernel_ipsec_t, update_sa, status_t,
-	private_kernel_pfkey_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)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	struct sadb_sa *sa;
-	pfkey_msg_t response;
-	size_t len;
-
-	/* we can't update the SA if any of the ip addresses have changed.
-	 * that's because we can't use SADB_UPDATE and by deleting and readding the
-	 * SA the sequence numbers would get lost */
-	if (!src->ip_equals(src, new_src) ||
-		!dst->ip_equals(dst, new_dst))
-	{
-		DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x: address changes"
-				" are not supported", ntohl(spi));
-		return NOT_SUPPORTED;
-	}
-
-	memset(&request, 0, sizeof(request));
-
-	DBG2(DBG_KNL, "querying SAD entry with SPI %.8x", ntohl(spi));
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_GET;
-	msg->sadb_msg_satype = proto2satype(protocol);
-	msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-	sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg);
-	sa->sadb_sa_exttype = SADB_EXT_SA;
-	sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa));
-	sa->sadb_sa_spi = spi;
-	PFKEY_EXT_ADD(msg, sa);
-
-	/* the kernel wants a SADB_EXT_ADDRESS_SRC to be present even though
-	 * it is not used for anything. */
-	add_anyaddr_ext(msg, dst->get_family(dst), SADB_EXT_ADDRESS_SRC);
-	add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);
-
-	if (pfkey_send(this, msg, &out, &len) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x",
-				ntohl(spi));
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x: %s (%d)",
-			ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		free(out);
-		return FAILED;
-	}
-	else if (parse_pfkey_message(out, &response) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x: parsing response "
-				"from kernel failed", ntohl(spi));
-		free(out);
-		return FAILED;
-	}
-
-	DBG2(DBG_KNL, "updating SAD entry with SPI %.8x from %#H..%#H to %#H..%#H",
-		 ntohl(spi), src, dst, new_src, new_dst);
-
-	memset(&request, 0, sizeof(request));
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_UPDATE;
-	msg->sadb_msg_satype = proto2satype(protocol);
-	msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-#ifdef __APPLE__
-	{
-		struct sadb_sa_2 *sa_2;
-		sa_2 = (struct sadb_sa_2*)PFKEY_EXT_ADD_NEXT(msg);
-		sa_2->sa.sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa_2));
-		memcpy(&sa_2->sa, response.sa, sizeof(struct sadb_sa));
-		if (encap)
-		{
-			sa_2->sadb_sa_natt_port = new_dst->get_port(new_dst);
-			sa_2->sa.sadb_sa_flags |= SADB_X_EXT_NATT;
-		}
-	}
-#else
-	PFKEY_EXT_COPY(msg, response.sa);
-#endif
-	PFKEY_EXT_COPY(msg, response.x_sa2);
-
-	PFKEY_EXT_COPY(msg, response.src);
-	PFKEY_EXT_COPY(msg, response.dst);
-
-	PFKEY_EXT_COPY(msg, response.lft_soft);
-	PFKEY_EXT_COPY(msg, response.lft_hard);
-
-	if (response.key_encr)
-	{
-		PFKEY_EXT_COPY(msg, response.key_encr);
-	}
-
-	if (response.key_auth)
-	{
-		PFKEY_EXT_COPY(msg, response.key_auth);
-	}
-
-#ifdef HAVE_NATT
-	if (new_encap)
-	{
-		add_encap_ext(msg, new_src, new_dst);
-	}
-#endif /*HAVE_NATT*/
-
-	free(out);
-
-	if (pfkey_send(this, msg, &out, &len) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x", ntohl(spi));
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x: %s (%d)",
-				ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		free(out);
-		return FAILED;
-	}
-	free(out);
-
-	return SUCCESS;
-}
-
-METHOD(kernel_ipsec_t, query_sa, status_t,
-	private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst,
-	u_int32_t spi, u_int8_t protocol, mark_t mark, u_int64_t *bytes)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	struct sadb_sa *sa;
-	pfkey_msg_t response;
-	size_t len;
-
-	memset(&request, 0, sizeof(request));
-
-	DBG2(DBG_KNL, "querying SAD entry with SPI %.8x", ntohl(spi));
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_GET;
-	msg->sadb_msg_satype = proto2satype(protocol);
-	msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-	sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg);
-	sa->sadb_sa_exttype = SADB_EXT_SA;
-	sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa));
-	sa->sadb_sa_spi = spi;
-	PFKEY_EXT_ADD(msg, sa);
-
-	/* the Linux Kernel doesn't care for the src address, but other systems do
-	 * (e.g. FreeBSD)
-	 */
-	add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0);
-	add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);
-
-	if (pfkey_send(this, msg, &out, &len) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x", ntohl(spi));
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x: %s (%d)",
-				ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		free(out);
-		return FAILED;
-	}
-	else if (parse_pfkey_message(out, &response) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x", ntohl(spi));
-		free(out);
-		return FAILED;
-	}
-	*bytes = response.lft_current->sadb_lifetime_bytes;
-
-	free(out);
-	return SUCCESS;
-}
-
-METHOD(kernel_ipsec_t, del_sa, status_t,
-	private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst,
-	u_int32_t spi, u_int8_t protocol, u_int16_t cpi, mark_t mark)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	struct sadb_sa *sa;
-	size_t len;
-
-	memset(&request, 0, sizeof(request));
-
-	DBG2(DBG_KNL, "deleting SAD entry with SPI %.8x", ntohl(spi));
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_DELETE;
-	msg->sadb_msg_satype = proto2satype(protocol);
-	msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-	sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg);
-	sa->sadb_sa_exttype = SADB_EXT_SA;
-	sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa));
-	sa->sadb_sa_spi = spi;
-	PFKEY_EXT_ADD(msg, sa);
-
-	/* the Linux Kernel doesn't care for the src address, but other systems do
-	 * (e.g. FreeBSD)
-	 */
-	add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0);
-	add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0);
-
-	if (pfkey_send(this, msg, &out, &len) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to delete SAD entry with SPI %.8x", ntohl(spi));
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "unable to delete SAD entry with SPI %.8x: %s (%d)",
-				ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		free(out);
-		return FAILED;
-	}
-
-	DBG2(DBG_KNL, "deleted SAD entry with SPI %.8x", ntohl(spi));
-	free(out);
-	return SUCCESS;
-}
-
-METHOD(kernel_ipsec_t, add_policy, status_t,
-	private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst,
-	traffic_selector_t *src_ts, traffic_selector_t *dst_ts,
-	policy_dir_t direction, u_int32_t spi, u_int8_t protocol,
-	u_int32_t reqid, mark_t mark, ipsec_mode_t mode, u_int16_t ipcomp,
-	u_int16_t cpi, bool routed)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	struct sadb_x_policy *pol;
-	struct sadb_x_ipsecrequest *req;
-	policy_entry_t *policy, *found = NULL;
-	pfkey_msg_t response;
-	size_t len;
-
-	if (dir2kernel(direction) == IPSEC_DIR_INVALID)
-	{
-		/* FWD policies are not supported on all platforms */
-		return SUCCESS;
-	}
-
-	/* create a policy */
-	policy = create_policy_entry(src_ts, dst_ts, direction, reqid);
-
-	/* find a matching policy */
-	this->mutex->lock(this->mutex);
-	if (this->policies->find_first(this->policies,
-			(linked_list_match_t)policy_entry_equals, (void**)&found, policy) == SUCCESS)
-	{
-		/* use existing policy */
-		found->refcount++;
-		DBG2(DBG_KNL, "policy %R === %R %N already exists, increasing "
-					  "refcount", src_ts, dst_ts,
-					   policy_dir_names, direction);
-		policy_entry_destroy(policy);
-		policy = found;
-	}
-	else
-	{
-		/* apply the new one, if we have no such policy */
-		this->policies->insert_last(this->policies, policy);
-		policy->refcount = 1;
-	}
-
-	memset(&request, 0, sizeof(request));
-
-	DBG2(DBG_KNL, "adding policy %R === %R %N", src_ts, dst_ts,
-				   policy_dir_names, direction);
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = found ? SADB_X_SPDUPDATE : SADB_X_SPDADD;
-	msg->sadb_msg_satype = 0;
-	msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-	pol = (struct sadb_x_policy*)PFKEY_EXT_ADD_NEXT(msg);
-	pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
-	pol->sadb_x_policy_len = PFKEY_LEN(sizeof(struct sadb_x_policy));
-	pol->sadb_x_policy_id = 0;
-	pol->sadb_x_policy_dir = dir2kernel(direction);
-	pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
-#ifdef HAVE_STRUCT_SADB_X_POLICY_SADB_X_POLICY_PRIORITY
-	/* calculate priority based on source selector size, small size = high prio */
-	pol->sadb_x_policy_priority = routed ? PRIO_LOW : PRIO_HIGH;
-	pol->sadb_x_policy_priority -= policy->src.mask * 10;
-	pol->sadb_x_policy_priority -= policy->src.proto != IPSEC_PROTO_ANY ? 2 : 0;
-	pol->sadb_x_policy_priority -= policy->src.net->get_port(policy->src.net) ? 1 : 0;
-#endif
-
-	/* one or more sadb_x_ipsecrequest extensions are added to the sadb_x_policy extension */
-	req = (struct sadb_x_ipsecrequest*)(pol + 1);
-	req->sadb_x_ipsecrequest_proto = protocol;
-	/* !!! the length of this struct MUST be in octets instead of 64 bit words */
-	req->sadb_x_ipsecrequest_len = sizeof(struct sadb_x_ipsecrequest);
-	req->sadb_x_ipsecrequest_mode = mode2kernel(mode);
-	req->sadb_x_ipsecrequest_reqid = reqid;
-	req->sadb_x_ipsecrequest_level = IPSEC_LEVEL_UNIQUE;
-	if (mode == MODE_TUNNEL)
-	{
-		len = hostcpy(req + 1, src);
-		req->sadb_x_ipsecrequest_len += len;
-		len = hostcpy((char*)(req + 1) + len, dst);
-		req->sadb_x_ipsecrequest_len += len;
-	}
-
-	pol->sadb_x_policy_len += PFKEY_LEN(req->sadb_x_ipsecrequest_len);
-	PFKEY_EXT_ADD(msg, pol);
-
-	add_addr_ext(msg, policy->src.net, SADB_EXT_ADDRESS_SRC, policy->src.proto,
-				 policy->src.mask);
-	add_addr_ext(msg, policy->dst.net, SADB_EXT_ADDRESS_DST, policy->dst.proto,
-				 policy->dst.mask);
-
-#ifdef __FreeBSD__
-	{	/* on FreeBSD a lifetime has to be defined to be able to later query
-		 * the current use time. */
-		struct sadb_lifetime *lft;
-		lft = (struct sadb_lifetime*)PFKEY_EXT_ADD_NEXT(msg);
-		lft->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
-		lft->sadb_lifetime_len = PFKEY_LEN(sizeof(struct sadb_lifetime));
-		lft->sadb_lifetime_addtime = LONG_MAX;
-		PFKEY_EXT_ADD(msg, lft);
-	}
-#endif
-
-	this->mutex->unlock(this->mutex);
-
-	if (pfkey_send(this, msg, &out, &len) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to add policy %R === %R %N", src_ts, dst_ts,
-					   policy_dir_names, direction);
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "unable to add policy %R === %R %N: %s (%d)", src_ts, dst_ts,
-					   policy_dir_names, direction,
-					   strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		free(out);
-		return FAILED;
-	}
-	else if (parse_pfkey_message(out, &response) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to add policy %R === %R %N: parsing response "
-				"from kernel failed", src_ts, dst_ts, policy_dir_names, direction);
-		free(out);
-		return FAILED;
-	}
-
-	this->mutex->lock(this->mutex);
-
-	/* we try to find the policy again and update the kernel index */
-	if (this->policies->find_last(this->policies, NULL, (void**)&policy) != SUCCESS)
-	{
-		DBG2(DBG_KNL, "unable to update index, the policy %R === %R %N is "
-				"already gone, ignoring", src_ts, dst_ts, policy_dir_names, direction);
-		this->mutex->unlock(this->mutex);
-		free(out);
-		return SUCCESS;
-	}
-	policy->index = response.x_policy->sadb_x_policy_id;
-	free(out);
-
-	/* install a route, if:
-	 * - we are NOT updating a policy
-	 * - this is a forward policy (to just get one for each child)
-	 * - we are in tunnel mode
-	 * - we are not using IPv6 (does not work correctly yet!)
-	 * - routing is not disabled via strongswan.conf
-	 */
-	if (policy->route == NULL && direction == POLICY_FWD &&
-		mode != MODE_TRANSPORT && src->get_family(src) != AF_INET6 &&
-		this->install_routes)
-	{
-		route_entry_t *route = malloc_thing(route_entry_t);
-
-		if (hydra->kernel_interface->get_address_by_ts(hydra->kernel_interface,
-				dst_ts, &route->src_ip) == SUCCESS)
-		{
-			/* get the nexthop to src (src as we are in POLICY_FWD).*/
-			route->gateway = hydra->kernel_interface->get_nexthop(
-									hydra->kernel_interface, src);
-			route->if_name = hydra->kernel_interface->get_interface(
-									hydra->kernel_interface, dst);
-			route->dst_net = chunk_clone(policy->src.net->get_address(policy->src.net));
-			route->prefixlen = policy->src.mask;
-
-			if (route->if_name)
-			{
-				switch (hydra->kernel_interface->add_route(
-									hydra->kernel_interface, route->dst_net,
-									route->prefixlen, route->gateway,
-									route->src_ip, route->if_name))
-				{
-					default:
-						DBG1(DBG_KNL, "unable to install source route for %H",
-							 route->src_ip);
-						/* FALL */
-					case ALREADY_DONE:
-						/* route exists, do not uninstall */
-						route_entry_destroy(route);
-						break;
-					case SUCCESS:
-						/* cache the installed route */
-						policy->route = route;
-						break;
-				}
-			}
-			else
-			{
-				route_entry_destroy(route);
-			}
-		}
-		else
-		{
-			free(route);
-		}
-	}
-
-	this->mutex->unlock(this->mutex);
-
-	return SUCCESS;
-}
-
-METHOD(kernel_ipsec_t, query_policy, status_t,
-	private_kernel_pfkey_ipsec_t *this, traffic_selector_t *src_ts,
-	traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
-	u_int32_t *use_time)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	struct sadb_x_policy *pol;
-	policy_entry_t *policy, *found = NULL;
-	pfkey_msg_t response;
-	size_t len;
-
-	if (dir2kernel(direction) == IPSEC_DIR_INVALID)
-	{
-		/* FWD policies are not supported on all platforms */
-		return NOT_FOUND;
-	}
-
-	DBG2(DBG_KNL, "querying policy %R === %R %N", src_ts, dst_ts,
-				   policy_dir_names, direction);
-
-	/* create a policy */
-	policy = create_policy_entry(src_ts, dst_ts, direction, 0);
-
-	/* find a matching policy */
-	this->mutex->lock(this->mutex);
-	if (this->policies->find_first(this->policies,
-			(linked_list_match_t)policy_entry_equals, (void**)&found, policy) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "querying policy %R === %R %N failed, not found", src_ts,
-					   dst_ts, policy_dir_names, direction);
-		policy_entry_destroy(policy);
-		this->mutex->unlock(this->mutex);
-		return NOT_FOUND;
-	}
-	policy_entry_destroy(policy);
-	policy = found;
-
-	memset(&request, 0, sizeof(request));
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_X_SPDGET;
-	msg->sadb_msg_satype = 0;
-	msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-	pol = (struct sadb_x_policy*)PFKEY_EXT_ADD_NEXT(msg);
-	pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
-	pol->sadb_x_policy_id = policy->index;
-	pol->sadb_x_policy_len = PFKEY_LEN(sizeof(struct sadb_x_policy));
-	pol->sadb_x_policy_dir = dir2kernel(direction);
-	pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
-	PFKEY_EXT_ADD(msg, pol);
-
-	add_addr_ext(msg, policy->src.net, SADB_EXT_ADDRESS_SRC, policy->src.proto,
-				 policy->src.mask);
-	add_addr_ext(msg, policy->dst.net, SADB_EXT_ADDRESS_DST, policy->dst.proto,
-				 policy->dst.mask);
-
-	this->mutex->unlock(this->mutex);
-
-	if (pfkey_send(this, msg, &out, &len) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to query policy %R === %R %N", src_ts, dst_ts,
-					   policy_dir_names, direction);
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "unable to query policy %R === %R %N: %s (%d)", src_ts,
-					   dst_ts, policy_dir_names, direction,
-					   strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		free(out);
-		return FAILED;
-	}
-	else if (parse_pfkey_message(out, &response) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to query policy %R === %R %N: parsing response "
-				"from kernel failed", src_ts, dst_ts, policy_dir_names, direction);
-		free(out);
-		return FAILED;
-	}
-	else if (response.lft_current == NULL)
-	{
-		DBG1(DBG_KNL, "unable to query policy %R === %R %N: kernel reports no "
-			 "use time", src_ts, dst_ts, policy_dir_names, direction);
-		free(out);
-		return FAILED;
-	}
-	/* we need the monotonic time, but the kernel returns system time. */
-	if (response.lft_current->sadb_lifetime_usetime)
-	{
-		*use_time = time_monotonic(NULL) -
-					(time(NULL) - response.lft_current->sadb_lifetime_usetime);
-	}
-	else
-	{
-		*use_time = 0;
-	}
-	free(out);
-
-	return SUCCESS;
-}
-
-METHOD(kernel_ipsec_t, del_policy, status_t,
-	private_kernel_pfkey_ipsec_t *this, traffic_selector_t *src_ts,
-	traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
-	bool unrouted)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	struct sadb_x_policy *pol;
-	policy_entry_t *policy, *found = NULL;
-	route_entry_t *route;
-	size_t len;
-
-	if (dir2kernel(direction) == IPSEC_DIR_INVALID)
-	{
-		/* FWD policies are not supported on all platforms */
-		return SUCCESS;
-	}
-
-	DBG2(DBG_KNL, "deleting policy %R === %R %N", src_ts, dst_ts,
-				   policy_dir_names, direction);
-
-	/* create a policy */
-	policy = create_policy_entry(src_ts, dst_ts, direction, 0);
-
-	/* find a matching policy */
-	this->mutex->lock(this->mutex);
-	if (this->policies->find_first(this->policies,
-			(linked_list_match_t)policy_entry_equals, (void**)&found, policy) == SUCCESS)
-	{
-		if (--found->refcount > 0)
-		{
-			/* is used by more SAs, keep in kernel */
-			DBG2(DBG_KNL, "policy still used by another CHILD_SA, not removed");
-			policy_entry_destroy(policy);
-			this->mutex->unlock(this->mutex);
-			return SUCCESS;
-		}
-		/* remove if last reference */
-		this->policies->remove(this->policies, found, NULL);
-		policy_entry_destroy(policy);
-		policy = found;
-	}
-	else
-	{
-		DBG1(DBG_KNL, "deleting policy %R === %R %N failed, not found", src_ts,
-					   dst_ts, policy_dir_names, direction);
-		policy_entry_destroy(policy);
-		this->mutex->unlock(this->mutex);
-		return NOT_FOUND;
-	}
-	this->mutex->unlock(this->mutex);
-
-	memset(&request, 0, sizeof(request));
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_X_SPDDELETE;
-	msg->sadb_msg_satype = 0;
-	msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-	pol = (struct sadb_x_policy*)PFKEY_EXT_ADD_NEXT(msg);
-	pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
-	pol->sadb_x_policy_len = PFKEY_LEN(sizeof(struct sadb_x_policy));
-	pol->sadb_x_policy_dir = dir2kernel(direction);
-	pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
-	PFKEY_EXT_ADD(msg, pol);
-
-	add_addr_ext(msg, policy->src.net, SADB_EXT_ADDRESS_SRC, policy->src.proto,
-				 policy->src.mask);
-	add_addr_ext(msg, policy->dst.net, SADB_EXT_ADDRESS_DST, policy->dst.proto,
-				 policy->dst.mask);
-
-	route = policy->route;
-	policy->route = NULL;
-	policy_entry_destroy(policy);
-
-	if (pfkey_send(this, msg, &out, &len) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to delete policy %R === %R %N", src_ts, dst_ts,
-					   policy_dir_names, direction);
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "unable to delete policy %R === %R %N: %s (%d)", src_ts,
-					   dst_ts, policy_dir_names, direction,
-					   strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		free(out);
-		return FAILED;
-	}
-	free(out);
-
-	if (route)
-	{
-		if (hydra->kernel_interface->del_route(hydra->kernel_interface,
-				route->dst_net, route->prefixlen, route->gateway,
-				route->src_ip, route->if_name) != SUCCESS)
-		{
-			DBG1(DBG_KNL, "error uninstalling route installed with "
-						  "policy %R === %R %N", src_ts, dst_ts,
-						   policy_dir_names, direction);
-		}
-		route_entry_destroy(route);
-	}
-
-	return SUCCESS;
-}
-
-/**
- * Register a socket for AQUIRE/EXPIRE messages
- */
-static status_t register_pfkey_socket(private_kernel_pfkey_ipsec_t *this,
-									  u_int8_t satype)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	size_t len;
-
-	memset(&request, 0, sizeof(request));
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_REGISTER;
-	msg->sadb_msg_satype = satype;
-	msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-	if (pfkey_send_socket(this, this->socket_events, msg, &out, &len) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to register PF_KEY socket");
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "unable to register PF_KEY socket: %s (%d)",
-					   strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		free(out);
-		return FAILED;
-	}
-	free(out);
-	return SUCCESS;
-}
-
-METHOD(kernel_ipsec_t, bypass_socket, bool,
-	private_kernel_pfkey_ipsec_t *this, int fd, int family)
-{
-	struct sadb_x_policy policy;
-	u_int sol, ipsec_policy;
-
-	switch (family)
-	{
-		case AF_INET:
-		{
-			sol = SOL_IP;
-			ipsec_policy = IP_IPSEC_POLICY;
-			break;
-		}
-		case AF_INET6:
-		{
-			sol = SOL_IPV6;
-			ipsec_policy = IPV6_IPSEC_POLICY;
-			break;
-		}
-		default:
-			return FALSE;
-	}
-
-	memset(&policy, 0, sizeof(policy));
-	policy.sadb_x_policy_len = sizeof(policy) / sizeof(u_int64_t);
-	policy.sadb_x_policy_exttype = SADB_X_EXT_POLICY;
-	policy.sadb_x_policy_type = IPSEC_POLICY_BYPASS;
-
-	policy.sadb_x_policy_dir = IPSEC_DIR_OUTBOUND;
-	if (setsockopt(fd, sol, ipsec_policy, &policy, sizeof(policy)) < 0)
-	{
-		DBG1(DBG_KNL, "unable to set IPSEC_POLICY on socket: %s",
-			 strerror(errno));
-		return FALSE;
-	}
-	policy.sadb_x_policy_dir = IPSEC_DIR_INBOUND;
-	if (setsockopt(fd, sol, ipsec_policy, &policy, sizeof(policy)) < 0)
-	{
-		DBG1(DBG_KNL, "unable to set IPSEC_POLICY on socket: %s",
-			 strerror(errno));
-		return FALSE;
-	}
-	return TRUE;
-}
-
-METHOD(kernel_ipsec_t, destroy, void,
-	private_kernel_pfkey_ipsec_t *this)
-{
-	if (this->job)
-	{
-		this->job->cancel(this->job);
-	}
-	if (this->socket > 0)
-	{
-		close(this->socket);
-	}
-	if (this->socket_events > 0)
-	{
-		close(this->socket_events);
-	}
-	this->policies->destroy_function(this->policies, (void*)policy_entry_destroy);
-	this->mutex->destroy(this->mutex);
-	this->mutex_pfkey->destroy(this->mutex_pfkey);
-	free(this);
-}
-
-/*
- * Described in header.
- */
-kernel_pfkey_ipsec_t *kernel_pfkey_ipsec_create()
-{
-	private_kernel_pfkey_ipsec_t *this;
-
-	INIT(this,
-		.public = {
-			.interface = {
-				.get_spi = _get_spi,
-				.get_cpi = _get_cpi,
-				.add_sa  = _add_sa,
-				.update_sa = _update_sa,
-				.query_sa = _query_sa,
-				.del_sa = _del_sa,
-				.add_policy = _add_policy,
-				.query_policy = _query_policy,
-				.del_policy = _del_policy,
-				.bypass_socket = _bypass_socket,
-				.destroy = _destroy,
-			},
-		},
-		.policies = linked_list_create(),
-		.mutex = mutex_create(MUTEX_TYPE_DEFAULT),
-		.mutex_pfkey = mutex_create(MUTEX_TYPE_DEFAULT),
-		.install_routes = lib->settings->get_bool(lib->settings,
-												"charon.install_routes", TRUE),
-	);
-
-	/* create a PF_KEY socket to communicate with the kernel */
-	this->socket = socket(PF_KEY, SOCK_RAW, PF_KEY_V2);
-	if (this->socket <= 0)
-	{
-		DBG1(DBG_KNL, "unable to create PF_KEY socket");
-		destroy(this);
-		return NULL;
-	}
-
-	/* create a PF_KEY socket for ACQUIRE & EXPIRE */
-	this->socket_events = socket(PF_KEY, SOCK_RAW, PF_KEY_V2);
-	if (this->socket_events <= 0)
-	{
-		DBG1(DBG_KNL, "unable to create PF_KEY event socket");
-		destroy(this);
-		return NULL;
-	}
-
-	/* register the event socket */
-	if (register_pfkey_socket(this, SADB_SATYPE_ESP) != SUCCESS ||
-		register_pfkey_socket(this, SADB_SATYPE_AH) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to register PF_KEY event socket");
-		destroy(this);
-		return NULL;
-	}
-
-	this->job = callback_job_create((callback_job_cb_t)receive_events,
-									this, NULL, NULL);
-	hydra->processor->queue_job(hydra->processor, (job_t*)this->job);
-
-	return &this->public;
-}
-