Moving charon to libcharon.

1 files changed, 0 insertions, 2657 deletions

diff --git a/src/charon/plugins/kernel_klips/kernel_klips_ipsec.c b/src/charon/plugins/kernel_klips/kernel_klips_ipsec.c
deleted file mode 100644
index 01df4f71a..000000000
--- a/src/charon/plugins/kernel_klips/kernel_klips_ipsec.c
+++ /dev/null
@@ -1,2657 +0,0 @@
-/*
- * Copyright (C) 2008 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 <sys/types.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <stdint.h>
-#include "pfkeyv2.h"
-#include <linux/udp.h>
-#include <net/if.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <string.h>
-#include <time.h>
-#include <errno.h>
-
-#include "kernel_klips_ipsec.h"
-
-#include <daemon.h>
-#include <threading/thread.h>
-#include <threading/mutex.h>
-#include <processing/jobs/callback_job.h>
-#include <processing/jobs/acquire_job.h>
-#include <processing/jobs/rekey_child_sa_job.h>
-#include <processing/jobs/delete_child_sa_job.h>
-#include <processing/jobs/update_sa_job.h>
-
-/** default timeout for generated SPIs (in seconds) */
-#define SPI_TIMEOUT 30
-
-/** buffer size for PF_KEY messages */
-#define PFKEY_BUFFER_SIZE 2048
-
-/** 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))
-
-/** special SPI values used for policies in KLIPS */
-#define SPI_PASS 256
-#define SPI_DROP 257
-#define SPI_REJECT 258
-#define SPI_HOLD 259
-#define SPI_TRAP 260
-#define SPI_TRAPSUBNET 261
-
-/** the prefix of the name of KLIPS ipsec devices */
-#define IPSEC_DEV_PREFIX "ipsec"
-/** this is the default number of ipsec devices */
-#define DEFAULT_IPSEC_DEV_COUNT 4
-/** TRUE if the given name matches an ipsec device */
-#define IS_IPSEC_DEV(name) (strneq((name), IPSEC_DEV_PREFIX, sizeof(IPSEC_DEV_PREFIX) - 1))
-
-/** the following stuff is from ipsec_tunnel.h */
-struct ipsectunnelconf
-{
-	__u32	cf_cmd;
-	union
-	{
-		char	cfu_name[12];
-	} cf_u;
-#define cf_name cf_u.cfu_name
-};
-
-#define IPSEC_SET_DEV (SIOCDEVPRIVATE)
-#define IPSEC_DEL_DEV (SIOCDEVPRIVATE + 1)
-#define IPSEC_CLR_DEV (SIOCDEVPRIVATE + 2)
-
-typedef struct private_kernel_klips_ipsec_t private_kernel_klips_ipsec_t;
-
-/**
- * Private variables and functions of kernel_klips class.
- */
-struct private_kernel_klips_ipsec_t
-{
-	/**
-	 * Public part of the kernel_klips_t object.
-	 */
-	kernel_klips_ipsec_t public;
-
-	/**
-	 * mutex to lock access to various lists
-	 */
-	mutex_t *mutex;
-
-	/**
-	 * List of installed policies (policy_entry_t)
-	 */
-	linked_list_t *policies;
-
-	/**
-	 * List of allocated SPIs without installed SA (sa_entry_t)
-	 */
-	linked_list_t *allocated_spis;
-
-	/**
-	 * List of installed SAs (sa_entry_t)
-	 */
-	linked_list_t *installed_sas;
-
-	/**
-	 * whether to install routes along policies
-	 */
-	bool install_routes;
-
-	/**
-	 * List of ipsec devices (ipsec_dev_t)
-	 */
-	linked_list_t *ipsec_devices;
-
-	/**
-	 * 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 ipsec_dev_t ipsec_dev_t;
-
-/**
- * ipsec device
- */
-struct ipsec_dev_t {
-	/** name of the virtual ipsec interface */
-	char name[IFNAMSIZ];
-
-	/** name of the physical interface */
-	char phys_name[IFNAMSIZ];
-
-	/** by how many CHILD_SA's this ipsec device is used */
-	u_int refcount;
-};
-
-/**
- * compare the given name with the virtual device name
- */
-static inline bool ipsec_dev_match_byname(ipsec_dev_t *current, char *name)
-{
-	return name && streq(current->name, name);
-}
-
-/**
- * compare the given name with the physical device name
- */
-static inline bool ipsec_dev_match_byphys(ipsec_dev_t *current, char *name)
-{
-	return name && streq(current->phys_name, name);
-}
-
-/**
- * matches free ipsec devices
- */
-static inline bool ipsec_dev_match_free(ipsec_dev_t *current)
-{
-	return current->refcount == 0;
-}
-
-/**
- * tries to find an ipsec_dev_t object by name
- */
-static status_t find_ipsec_dev(private_kernel_klips_ipsec_t *this, char *name,
-							   ipsec_dev_t **dev)
-{
-	linked_list_match_t match = (linked_list_match_t)(IS_IPSEC_DEV(name) ?
-								ipsec_dev_match_byname : ipsec_dev_match_byphys);
-	return this->ipsec_devices->find_first(this->ipsec_devices, match,
-												(void**)dev, name);
-}
-
-/**
- * attach an ipsec device to a physical interface
- */
-static status_t attach_ipsec_dev(char* name, char *phys_name)
-{
-	int sock;
-	struct ifreq req;
-	struct ipsectunnelconf *itc = (struct ipsectunnelconf*)&req.ifr_data;
-	short phys_flags;
-	int mtu;
-
-	DBG2(DBG_KNL, "attaching virtual interface %s to %s", name, phys_name);
-
-	if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) <= 0)
-	{
-		return FAILED;
-	}
-
-	strncpy(req.ifr_name, phys_name, IFNAMSIZ);
-	if (ioctl(sock, SIOCGIFFLAGS, &req) < 0)
-	{
-		close(sock);
-		return FAILED;
-	}
-	phys_flags = req.ifr_flags;
-
-	strncpy(req.ifr_name, name, IFNAMSIZ);
-	if (ioctl(sock, SIOCGIFFLAGS, &req) < 0)
-	{
-		close(sock);
-		return FAILED;
-	}
-
-	if (req.ifr_flags & IFF_UP)
-	{
-		/* if it's already up, it is already attached, detach it first */
-		ioctl(sock, IPSEC_DEL_DEV, &req);
-	}
-
-	/* attach it */
-	strncpy(req.ifr_name, name, IFNAMSIZ);
-	strncpy(itc->cf_name, phys_name, sizeof(itc->cf_name));
-	ioctl(sock, IPSEC_SET_DEV, &req);
-
-	/* copy address from physical to virtual */
-	strncpy(req.ifr_name, phys_name, IFNAMSIZ);
-	if (ioctl(sock, SIOCGIFADDR, &req) == 0)
-	{
-		strncpy(req.ifr_name, name, IFNAMSIZ);
-		ioctl(sock, SIOCSIFADDR, &req);
-	}
-
-	/* copy net mask from physical to virtual */
-	strncpy(req.ifr_name, phys_name, IFNAMSIZ);
-	if (ioctl(sock, SIOCGIFNETMASK, &req) == 0)
-	{
-		strncpy(req.ifr_name, name, IFNAMSIZ);
-		ioctl(sock, SIOCSIFNETMASK, &req);
-	}
-
-	/* copy other flags and addresses */
-	strncpy(req.ifr_name, name, IFNAMSIZ);
-	if (ioctl(sock, SIOCGIFFLAGS, &req) == 0)
-	{
-		if (phys_flags & IFF_POINTOPOINT)
-		{
-			req.ifr_flags |= IFF_POINTOPOINT;
-			req.ifr_flags &= ~IFF_BROADCAST;
-			ioctl(sock, SIOCSIFFLAGS, &req);
-
-			strncpy(req.ifr_name, phys_name, IFNAMSIZ);
-			if (ioctl(sock, SIOCGIFDSTADDR, &req) == 0)
-			{
-				strncpy(req.ifr_name, name, IFNAMSIZ);
-				ioctl(sock, SIOCSIFDSTADDR, &req);
-			}
-		}
-		else if (phys_flags & IFF_BROADCAST)
-		{
-			req.ifr_flags &= ~IFF_POINTOPOINT;
-			req.ifr_flags |= IFF_BROADCAST;
-			ioctl(sock, SIOCSIFFLAGS, &req);
-
-			strncpy(req.ifr_name, phys_name, IFNAMSIZ);
-			if (ioctl(sock, SIOCGIFBRDADDR, &req)==0)
-			{
-				strncpy(req.ifr_name, name, IFNAMSIZ);
-				ioctl(sock, SIOCSIFBRDADDR, &req);
-			}
-		}
-		else
-		{
-			req.ifr_flags &= ~IFF_POINTOPOINT;
-			req.ifr_flags &= ~IFF_BROADCAST;
-			ioctl(sock, SIOCSIFFLAGS, &req);
-		}
-	}
-
-	mtu = lib->settings->get_int(lib->settings,
-						"charon.plugins.kernel-klips.ipsec_dev_mtu", 0);
-	if (mtu <= 0)
-	{
-		/* guess MTU as physical MTU - ESP overhead [- NAT-T overhead]
-		 * ESP overhead      : 73 bytes
-		 * NAT-T overhead    :  8 bytes ==> 81 bytes
-		 *
-		 * assuming tunnel mode with AES encryption and integrity
-		 * outer IP header  : 20 bytes
-		 * (NAT-T UDP header:  8 bytes)
-		 * ESP header       :  8 bytes
-		 * IV               : 16 bytes
-		 * padding          : 15 bytes (worst-case)
-		 * pad len / NH     :  2 bytes
-		 * auth data        : 12 bytes
-		 */
-		strncpy(req.ifr_name, phys_name, IFNAMSIZ);
-		ioctl(sock, SIOCGIFMTU, &req);
-		mtu = req.ifr_mtu - 81;
-	}
-
-	/* set MTU */
-	strncpy(req.ifr_name, name, IFNAMSIZ);
-	req.ifr_mtu = mtu;
-	ioctl(sock, SIOCSIFMTU, &req);
-
-	/* bring ipsec device UP */
-	if (ioctl(sock, SIOCGIFFLAGS, &req) == 0)
-	{
-		req.ifr_flags |= IFF_UP;
-		ioctl(sock, SIOCSIFFLAGS, &req);
-	}
-
-	close(sock);
-	return SUCCESS;
-}
-
-/**
- * detach an ipsec device from a physical interface
- */
-static status_t detach_ipsec_dev(char* name, char *phys_name)
-{
-	int sock;
-	struct ifreq req;
-
-	DBG2(DBG_KNL, "detaching virtual interface %s from %s", name,
-			strlen(phys_name) ? phys_name : "any physical interface");
-
-	if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) <= 0)
-	{
-		return FAILED;
-	}
-
-	strncpy(req.ifr_name, name, IFNAMSIZ);
-	if (ioctl(sock, SIOCGIFFLAGS, &req) < 0)
-	{
-		close(sock);
-		return FAILED;
-	}
-
-	/* shutting interface down */
-	if (req.ifr_flags & IFF_UP)
-	{
-		req.ifr_flags &= ~IFF_UP;
-		ioctl(sock, SIOCSIFFLAGS, &req);
-	}
-
-	/* unset address */
-	memset(&req.ifr_addr, 0, sizeof(req.ifr_addr));
-	req.ifr_addr.sa_family = AF_INET;
-	ioctl(sock, SIOCSIFADDR, &req);
-
-	/* detach interface */
-	ioctl(sock, IPSEC_DEL_DEV, &req);
-
-	close(sock);
-	return SUCCESS;
-}
-
-/**
- * destroy an ipsec_dev_t object
- */
-static void ipsec_dev_destroy(ipsec_dev_t *this)
-{
-	detach_ipsec_dev(this->name, this->phys_name);
-	free(this);
-}
-
-
-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);
-	this->src_ip->destroy(this->src_ip);
-	this->gateway->destroy(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, if setup as trap */
-	u_int32_t reqid;
-
-	/** 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 actively used */
-	u_int activecount;
-
-	/** by how many CHILD_SA's this policy is trapped */
-	u_int trapcount;
-};
-
-/**
- * convert a numerical netmask to a host_t
- */
-static host_t *mask2host(int family, u_int8_t mask)
-{
-	static const u_char bitmask[] = { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe };
-	chunk_t chunk = chunk_alloca(family == AF_INET ? 4 : 16);
-	int bytes = mask / 8, bits = mask % 8;
-	memset(chunk.ptr, 0xFF, bytes);
-	memset(chunk.ptr + bytes, 0, chunk.len - bytes);
-	if (bits)
-	{
-		chunk.ptr[bytes] =  bitmask[bits];
-	}
-	return host_create_from_chunk(family, chunk, 0);
-}
-
-/**
- * check if a host is in a subnet (host with netmask in bits)
- */
-static bool is_host_in_net(host_t *host, host_t *net, u_int8_t mask)
-{
-	static const u_char bitmask[] = { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe };
-	chunk_t host_chunk, net_chunk;
-	int bytes = mask / 8, bits = mask % 8;
-
-	host_chunk = host->get_address(host);
-	net_chunk = net->get_address(net);
-
-	if (host_chunk.len != net_chunk.len)
-	{
-		return FALSE;
-	}
-
-	if (memeq(host_chunk.ptr, net_chunk.ptr, bytes))
-	{
-		return (bits == 0) ||
-			   (host_chunk.ptr[bytes] & bitmask[bits]) ==
-				   (net_chunk.ptr[bytes] & bitmask[bits]);
-	}
-
-	return FALSE;
-}
-
-/**
- * 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)
-{
-	policy_entry_t *policy = malloc_thing(policy_entry_t);
-	policy->reqid = 0;
-	policy->direction = dir;
-	policy->route = NULL;
-	policy->activecount = 0;
-	policy->trapcount = 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 : 0;
-	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);
-}
-
-static inline bool policy_entry_match_byaddrs(policy_entry_t *current, host_t *src,
-		host_t *dst)
-{
-	return is_host_in_net(src, current->src.net, current->src.mask) &&
-			is_host_in_net(dst, current->dst.net, current->dst.mask);
-}
-
-typedef struct sa_entry_t sa_entry_t;
-
-/**
- * used for two things:
- * - allocated SPIs that have not yet resulted in an installed SA
- * - installed inbound SAs with enabled UDP encapsulation
- */
-struct sa_entry_t {
-
-	/** protocol of this SA */
-	protocol_id_t protocol;
-
-	/** reqid of this SA */
-	u_int32_t reqid;
-
-	/** SPI of this SA */
-	u_int32_t spi;
-
-	/** src address of this SA */
-	host_t *src;
-
-	/** dst address of this SA */
-	host_t *dst;
-
-	/** TRUE if this SA uses UDP encapsulation */
-	bool encap;
-
-	/** TRUE if this SA is inbound */
-	bool inbound;
-};
-
-/**
- * create an sa_entry_t object
- */
-static sa_entry_t *create_sa_entry(protocol_id_t protocol, u_int32_t spi,
-								   u_int32_t reqid, host_t *src, host_t *dst,
-								   bool encap, bool inbound)
-{
-	sa_entry_t *sa = malloc_thing(sa_entry_t);
-	sa->protocol = protocol;
-	sa->reqid = reqid;
-	sa->spi = spi;
-	sa->src = src ? src->clone(src) : NULL;
-	sa->dst = dst ? dst->clone(dst) : NULL;
-	sa->encap = encap;
-	sa->inbound = inbound;
-	return sa;
-}
-
-/**
- * destroy an sa_entry_t object
- */
-static void sa_entry_destroy(sa_entry_t *this)
-{
-	DESTROY_IF(this->src);
-	DESTROY_IF(this->dst);
-	free(this);
-}
-
-/**
- * match an sa_entry_t for an inbound SA that uses UDP encapsulation by spi and src (remote) address
- */
-static inline bool sa_entry_match_encapbysrc(sa_entry_t *current, u_int32_t *spi,
-		host_t *src)
-{
-	return current->encap && current->inbound &&
-		   current->spi == *spi && src->ip_equals(src, current->src);
-}
-
-/**
- * match an sa_entry_t by protocol, spi and dst address (as the kernel does it)
- */
-static inline bool sa_entry_match_bydst(sa_entry_t *current, protocol_id_t *protocol,
-		u_int32_t *spi, host_t *dst)
-{
-	return current->protocol == *protocol && current->spi == *spi && dst->ip_equals(dst, current->dst);
-}
-
-/**
- * match an sa_entry_t by protocol, reqid and spi
- */
-static inline bool sa_entry_match_byid(sa_entry_t *current, protocol_id_t *protocol,
-		u_int32_t *spi, u_int32_t *reqid)
-{
-	return current->protocol == *protocol && current->spi == *spi && current->reqid == *reqid;
-}
-
-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_ext *x_policy;				/* SADB_X_EXT_SATYPE2 */
-			struct sadb_ext *x_sa2;					/* SADB_X_EXT_SA2 */
-			struct sadb_address *x_dst2;			/* SADB_X_EXT_ADDRESS_DST2 */
-			struct sadb_address *x_src_flow;		/* SADB_X_EXT_ADDRESS_SRC_FLOW */
-			struct sadb_address *x_dst_flow;		/* SADB_X_EXT_ADDRESS_DST_FLOW */
-			struct sadb_address *x_src_mask;		/* SADB_X_EXT_ADDRESS_SRC_MASK */
-			struct sadb_address *x_dst_mask;		/* SADB_X_EXT_ADDRESS_DST_MASK */
-			struct sadb_x_debug *x_debug;			/* SADB_X_EXT_DEBUG */
-			struct sadb_protocol *x_protocol;		/* SADB_X_EXT_PROTOCOL */
-			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 */
-		} __attribute__((__packed__));
-	};
-};
-
-/**
- * convert a IKEv2 specific protocol identifier to the PF_KEY sa type
- */
-static u_int8_t proto_ike2satype(protocol_id_t proto)
-{
-	switch (proto)
-	{
-		case PROTO_ESP:
-			return SADB_SATYPE_ESP;
-		case PROTO_AH:
-			return SADB_SATYPE_AH;
-		case IPPROTO_COMP:
-			return SADB_X_SATYPE_COMP;
-		default:
-			return proto;
-	}
-}
-
-/**
- * convert a PF_KEY sa type to a IKEv2 specific protocol identifier
- */
-static protocol_id_t proto_satype2ike(u_int8_t proto)
-{
-	switch (proto)
-	{
-		case SADB_SATYPE_ESP:
-			return PROTO_ESP;
-		case SADB_SATYPE_AH:
-			return PROTO_AH;
-		case SADB_X_SATYPE_COMP:
-			return IPPROTO_COMP;
-		default:
-			return proto;
-	}
-}
-
-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,					0							}, */
-	{ENCR_BLOWFISH,				SADB_EALG_BFCBC				},
-/*	{ENCR_3IDEA,				0							}, */
-/*	{ENCR_DES_IV32,				0							}, */
-	{ENCR_NULL,					SADB_EALG_NULL				},
-	{ENCR_AES_CBC,				SADB_EALG_AESCBC			},
-/*	{ENCR_AES_CTR,				0							}, */
-/*	{ENCR_AES_CCM_ICV8,			0							}, */
-/*	{ENCR_AES_CCM_ICV12,		0							}, */
-/*	{ENCR_AES_CCM_ICV16,		0							}, */
-/*	{ENCR_AES_GCM_ICV8,			0							}, */
-/*	{ENCR_AES_GCM_ICV12,		0							}, */
-/*	{ENCR_AES_GCM_ICV16,		0							}, */
-	{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_AALG_SHA256_HMAC		},
-	{AUTH_HMAC_SHA2_384_192,	SADB_AALG_SHA384_HMAC		},
-	{AUTH_HMAC_SHA2_512_256,	SADB_AALG_SHA512_HMAC		},
-/*	{AUTH_DES_MAC,				0,							}, */
-/*	{AUTH_KPDK_MD5,				0,							}, */
-/*	{AUTH_AES_XCBC_96,			0,							}, */
-	{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,				0							}, */
-	{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;
-}
-
-/**
- * add a host behind a sadb_address extension
- */
-static void host2ext(host_t *host, struct sadb_address *ext)
-{
-	sockaddr_t *host_addr = host->get_sockaddr(host);
-	socklen_t *len = host->get_sockaddr_len(host);
-	memcpy((char*)(ext + 1), host_addr, *len);
-	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)
-{
-	struct sadb_address *addr = (struct sadb_address*)PFKEY_EXT_ADD_NEXT(msg);
-	addr->sadb_address_exttype = type;
-	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;
-	addr->sadb_address_len = PFKEY_LEN(sizeof(*addr) + len);
-	PFKEY_EXT_ADD(msg, addr);
-}
-
-/**
- * add udp encap extensions to a sadb_msg
- */
-static void add_encap_ext(struct sadb_msg *msg, host_t *src, host_t *dst,
-							bool ports_only)
-{
-	struct sadb_x_nat_t_type* nat_type;
-	struct sadb_x_nat_t_port* nat_port;
-
-	if (!ports_only)
-	{
-		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 = 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 = dst->get_port(dst);
-	PFKEY_EXT_ADD(msg, nat_port);
-}
-
-/**
- * build an SADB_X_ADDFLOW msg
- */
-static void build_addflow(struct sadb_msg *msg, u_int8_t satype, u_int32_t spi,
-		host_t *src, host_t *dst, host_t *src_net, u_int8_t src_mask,
-		host_t *dst_net, u_int8_t dst_mask, u_int8_t protocol, bool replace)
-{
-	struct sadb_sa *sa;
-	struct sadb_protocol *proto;
-	host_t *host;
-
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_X_ADDFLOW;
-	msg->sadb_msg_satype = satype;
-	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_spi = spi;
-	sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa));
-	sa->sadb_sa_flags = replace ? SADB_X_SAFLAGS_REPLACEFLOW : 0;
-	PFKEY_EXT_ADD(msg, sa);
-
-	if (!src)
-	{
-		add_anyaddr_ext(msg, src_net->get_family(src_net), SADB_EXT_ADDRESS_SRC);
-	}
-	else
-	{
-		add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC);
-	}
-
-	if (!dst)
-	{
-		add_anyaddr_ext(msg, dst_net->get_family(dst_net), SADB_EXT_ADDRESS_DST);
-	}
-	else
-	{
-		add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST);
-	}
-
-	add_addr_ext(msg, src_net, SADB_X_EXT_ADDRESS_SRC_FLOW);
-	add_addr_ext(msg, dst_net, SADB_X_EXT_ADDRESS_DST_FLOW);
-
-	host = mask2host(src_net->get_family(src_net), src_mask);
-	add_addr_ext(msg, host, SADB_X_EXT_ADDRESS_SRC_MASK);
-	host->destroy(host);
-
-	host = mask2host(dst_net->get_family(dst_net), dst_mask);
-	add_addr_ext(msg, host, SADB_X_EXT_ADDRESS_DST_MASK);
-	host->destroy(host);
-
-	proto = (struct sadb_protocol*)PFKEY_EXT_ADD_NEXT(msg);
-	proto->sadb_protocol_exttype = SADB_X_EXT_PROTOCOL;
-	proto->sadb_protocol_len = PFKEY_LEN(sizeof(struct sadb_protocol));
-	proto->sadb_protocol_proto = protocol;
-	PFKEY_EXT_ADD(msg, proto);
-}
-
-/**
- * build an SADB_X_DELFLOW msg
- */
-static void build_delflow(struct sadb_msg *msg, u_int8_t satype,
-		host_t *src_net, u_int8_t src_mask, host_t *dst_net, u_int8_t dst_mask,
-		u_int8_t protocol)
-{
-	struct sadb_protocol *proto;
-	host_t *host;
-
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_X_DELFLOW;
-	msg->sadb_msg_satype = satype;
-	msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg));
-
-	add_addr_ext(msg, src_net, SADB_X_EXT_ADDRESS_SRC_FLOW);
-	add_addr_ext(msg, dst_net, SADB_X_EXT_ADDRESS_DST_FLOW);
-
-	host = mask2host(src_net->get_family(src_net),
-					 src_mask);
-	add_addr_ext(msg, host, SADB_X_EXT_ADDRESS_SRC_MASK);
-	host->destroy(host);
-
-	host = mask2host(dst_net->get_family(dst_net),
-					 dst_mask);
-	add_addr_ext(msg, host, SADB_X_EXT_ADDRESS_DST_MASK);
-	host->destroy(host);
-
-	proto = (struct sadb_protocol*)PFKEY_EXT_ADD_NEXT(msg);
-	proto->sadb_protocol_exttype = SADB_X_EXT_PROTOCOL;
-	proto->sadb_protocol_len = PFKEY_LEN(sizeof(struct sadb_protocol));
-	proto->sadb_protocol_proto = protocol;
-	PFKEY_EXT_ADD(msg, proto);
-}
-
-/**
- * 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)))
-	{
-		if (ext->sadb_ext_len < PFKEY_LEN(sizeof(struct sadb_ext)) ||
-			ext->sadb_ext_len > len)
-		{
-			DBG1(DBG_KNL, "length of PF_KEY extension (%d) is invalid", 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 PF_KEY extension of type (%d)", 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_klips_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);
-
-	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)
-		{
-			switch (errno)
-			{
-				case EINTR:
-					/* interrupted, try again */
-					continue;
-				case EINVAL:
-				case EEXIST:
-				case ESRCH:
-					/* we should also get a response for these from KLIPS */
-					break;
-				default:
-					this->mutex_pfkey->unlock(this->mutex_pfkey);
-					DBG1(DBG_KNL, "error sending to PF_KEY socket: %s (%d)",
-							strerror(errno), 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;
-			}
-			this->mutex_pfkey->unlock(this->mutex_pfkey);
-			DBG1(DBG_KNL, "error reading from PF_KEY socket: %s", strerror(errno));
-			return FAILED;
-		}
-		if (len < sizeof(struct sadb_msg) ||
-			msg->sadb_msg_len < PFKEY_LEN(sizeof(struct sadb_msg)))
-		{
-			this->mutex_pfkey->unlock(this->mutex_pfkey);
-			DBG1(DBG_KNL, "received corrupted PF_KEY message");
-			return FAILED;
-		}
-		if (msg->sadb_msg_len > len / PFKEY_ALIGNMENT)
-		{
-			this->mutex_pfkey->unlock(this->mutex_pfkey);
-			DBG1(DBG_KNL, "buffer was too small to receive the complete PF_KEY message");
-			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 invalid sequence number,"
-					" was %d expected %d", msg->sadb_msg_seq, this->seq);
-			if (msg->sadb_msg_seq < this->seq)
-			{
-				continue;
-			}
-			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.
- */
-static status_t pfkey_send(private_kernel_klips_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);
-}
-
-/**
- * Send a message to the default PF_KEY socket and handle the response.
- */
-static status_t pfkey_send_ack(private_kernel_klips_ipsec_t *this, struct sadb_msg *in)
-{
-	struct sadb_msg *out;
-	size_t len;
-
-	if (pfkey_send(this, in, &out, &len) != SUCCESS)
-	{
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "PF_KEY error: %s (%d)",
-					   strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		free(out);
-		return FAILED;
-	}
-	free(out);
-	return SUCCESS;
-}
-
-/**
- * Add an eroute to KLIPS
- */
-static status_t add_eroute(private_kernel_klips_ipsec_t *this, u_int8_t satype,
-		u_int32_t spi, host_t *src, host_t *dst, host_t *src_net, u_int8_t src_mask,
-		host_t *dst_net, u_int8_t dst_mask, u_int8_t protocol, bool replace)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg = (struct sadb_msg*)request;
-
-	memset(&request, 0, sizeof(request));
-
-	build_addflow(msg, satype, spi, src, dst, src_net, src_mask,
-			dst_net, dst_mask, protocol, replace);
-
-	return pfkey_send_ack(this, msg);
-}
-
-/**
- * Delete an eroute fom KLIPS
- */
-static status_t del_eroute(private_kernel_klips_ipsec_t *this, u_int8_t satype,
-		host_t *src_net, u_int8_t src_mask, host_t *dst_net, u_int8_t dst_mask,
-		u_int8_t protocol)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg = (struct sadb_msg*)request;
-
-	memset(&request, 0, sizeof(request));
-
-	build_delflow(msg, satype, src_net, src_mask, dst_net, dst_mask, protocol);
-
-	return pfkey_send_ack(this, msg);
-}
-
-/**
- * Process a SADB_ACQUIRE message from the kernel
- */
-static void process_acquire(private_kernel_klips_ipsec_t *this, struct sadb_msg* msg)
-{
-	pfkey_msg_t response;
-	host_t *src, *dst;
-	u_int32_t reqid;
-	u_int8_t proto;
-	policy_entry_t *policy;
-	job_t *job;
-
-	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;
-	}
-
-	if (parse_pfkey_message(msg, &response) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "parsing SADB_ACQUIRE from kernel failed");
-		return;
-	}
-
-	/* KLIPS provides us only with the source and destination address,
-	 * and the transport protocol of the packet that triggered the policy.
-	 * we use this information to find a matching policy in our cache.
-	 * because KLIPS installs a narrow %hold eroute covering only this information,
-	 * we replace both the %trap and this %hold eroutes with a broader %hold
-	 * eroute covering the whole policy */
-	src = host_create_from_sockaddr((sockaddr_t*)(response.src + 1));
-	dst = host_create_from_sockaddr((sockaddr_t*)(response.dst + 1));
-	proto = response.src->sadb_address_proto;
-	if (!src || !dst || src->get_family(src) != dst->get_family(dst))
-	{
-		DBG1(DBG_KNL, "received an SADB_ACQUIRE with invalid hosts");
-		return;
-	}
-
-	DBG2(DBG_KNL, "received an SADB_ACQUIRE for %H == %H : %d", src, dst, proto);
-	this->mutex->lock(this->mutex);
-	if (this->policies->find_first(this->policies,
-			(linked_list_match_t)policy_entry_match_byaddrs,
-				(void**)&policy, src, dst) != SUCCESS)
-	{
-		this->mutex->unlock(this->mutex);
-		DBG1(DBG_KNL, "received an SADB_ACQUIRE, but found no matching policy");
-		return;
-	}
-	if ((reqid = policy->reqid) == 0)
-	{
-		this->mutex->unlock(this->mutex);
-		DBG1(DBG_KNL, "received an SADB_ACQUIRE, but policy is not routed anymore");
-		return;
-	}
-
-	/* add a broad %hold eroute that replaces the %trap eroute */
-	add_eroute(this, SADB_X_SATYPE_INT, htonl(SPI_HOLD), NULL, NULL,
-			policy->src.net, policy->src.mask, policy->dst.net, policy->dst.mask,
-			policy->src.proto, TRUE);
-
-	/* remove the narrow %hold eroute installed by KLIPS */
-	del_eroute(this, SADB_X_SATYPE_INT, src, 32, dst, 32, proto);
-
-	this->mutex->unlock(this->mutex);
-
-	DBG2(DBG_KNL, "received an SADB_ACQUIRE");
-	DBG1(DBG_KNL, "creating acquire job for CHILD_SA with reqid {%d}", reqid);
-	job = (job_t*)acquire_job_create(reqid, NULL, NULL);
-	charon->processor->queue_job(charon->processor, job);
-}
-
-/**
- * Process a SADB_X_NAT_T_NEW_MAPPING message from the kernel
- */
-static void process_mapping(private_kernel_klips_ipsec_t *this, struct sadb_msg* msg)
-{
-	pfkey_msg_t response;
-	u_int32_t spi, reqid;
-	host_t *old_src, *new_src;
-	job_t *job;
-
-	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;
-	}
-
-	spi = response.sa->sadb_sa_spi;
-
-	if (proto_satype2ike(msg->sadb_msg_satype) == PROTO_ESP)
-	{
-		sa_entry_t *sa;
-		sockaddr_t *addr = (sockaddr_t*)(response.src + 1);
-		old_src = host_create_from_sockaddr(addr);
-
-		this->mutex->lock(this->mutex);
-		if (!old_src || this->installed_sas->find_first(this->installed_sas,
-				(linked_list_match_t)sa_entry_match_encapbysrc,
-					(void**)&sa, &spi, old_src) != SUCCESS)
-		{
-			this->mutex->unlock(this->mutex);
-			DBG1(DBG_KNL, "received an SADB_X_NAT_T_NEW_MAPPING, but found no matching SA");
-			return;
-		}
-		reqid = sa->reqid;
-		this->mutex->unlock(this->mutex);
-
-		addr = (sockaddr_t*)(response.dst + 1);
-		switch (addr->sa_family)
-		{
-			case AF_INET:
-			{
-				struct sockaddr_in *sin = (struct sockaddr_in*)addr;
-				sin->sin_port = htons(response.x_natt_dport->sadb_x_nat_t_port_port);
-			}
-			case AF_INET6:
-			{
-				struct sockaddr_in6 *sin6 = (struct sockaddr_in6*)addr;
-				sin6->sin6_port = htons(response.x_natt_dport->sadb_x_nat_t_port_port);
-			}
-			default:
-				break;
-		}
-		new_src = host_create_from_sockaddr(addr);
-		if (new_src)
-		{
-			DBG1(DBG_KNL, "NAT mappings of ESP CHILD_SA with SPI %.8x and"
-				" reqid {%d} changed, queuing update job", ntohl(spi), reqid);
-			job = (job_t*)update_sa_job_create(reqid, new_src);
-			charon->processor->queue_job(charon->processor, job);
-		}
-	}
-}
-
-/**
- * Receives events from kernel
- */
-static job_requeue_t receive_events(private_kernel_klips_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 = recv(this->socket_events, buf, sizeof(buf), 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:
-			/* SADB_EXPIRE events in KLIPS are only triggered by traffic (even for
-			 * the time based limits). So if there is no traffic for a longer
-			 * period than configured as hard limit, we wouldn't be able to rekey
-			 * the SA and just receive the hard expire and thus delete the SA.
-			 * To avoid this behavior and to make charon behave as with the other
-			 * kernel plugins, we implement the expiration of SAs ourselves. */
-			break;
-		case SADB_X_NAT_T_NEW_MAPPING:
-			process_mapping(this, msg);
-			break;
-		default:
-			break;
-	}
-
-	return JOB_REQUEUE_DIRECT;
-}
-
-typedef enum {
-	/** an SPI has expired */
-	EXPIRE_TYPE_SPI,
-	/** a CHILD_SA has to be rekeyed */
-	EXPIRE_TYPE_SOFT,
-	/** a CHILD_SA has to be deleted */
-	EXPIRE_TYPE_HARD
-} expire_type_t;
-
-typedef struct sa_expire_t sa_expire_t;
-
-struct sa_expire_t {
-	/** kernel interface */
-	private_kernel_klips_ipsec_t *this;
-	/** the SPI of the expiring SA */
-	u_int32_t spi;
-	/** the protocol of the expiring SA */
-	protocol_id_t protocol;
-	/** the reqid of the expiring SA*/
-	u_int32_t reqid;
-	/** what type of expire this is */
-	expire_type_t type;
-};
-
-/**
- * Called when an SA expires
- */
-static job_requeue_t sa_expires(sa_expire_t *expire)
-{
-	private_kernel_klips_ipsec_t *this = expire->this;
-	protocol_id_t protocol = expire->protocol;
-	u_int32_t spi = expire->spi, reqid = expire->reqid;
-	bool hard = expire->type != EXPIRE_TYPE_SOFT;
-	sa_entry_t *cached_sa;
-	linked_list_t *list;
-	job_t *job;
-
-	/* for an expired SPI we first check whether the CHILD_SA got installed
-	 * in the meantime, for expired SAs we check whether they are still installed */
-	list = expire->type == EXPIRE_TYPE_SPI ? this->allocated_spis : this->installed_sas;
-
-	this->mutex->lock(this->mutex);
-	if (list->find_first(list, (linked_list_match_t)sa_entry_match_byid,
-			(void**)&cached_sa, &protocol, &spi, &reqid) != SUCCESS)
-	{
-		/* we found no entry:
-		 * - for SPIs, a CHILD_SA has been installed
-		 * - for SAs, the CHILD_SA has already been deleted */
-		this->mutex->unlock(this->mutex);
-		return JOB_REQUEUE_NONE;
-	}
-	else
-	{
-		list->remove(list, cached_sa, NULL);
-		sa_entry_destroy(cached_sa);
-	}
-	this->mutex->unlock(this->mutex);
-
-	DBG2(DBG_KNL, "%N CHILD_SA with SPI %.8x and reqid {%d} expired",
-			protocol_id_names, protocol, ntohl(spi), reqid);
-
-	DBG1(DBG_KNL, "creating %s job for %N CHILD_SA with SPI %.8x and reqid {%d}",
-		 hard ? "delete" : "rekey",  protocol_id_names,
-		 protocol, ntohl(spi), reqid);
-	if (hard)
-	{
-		job = (job_t*)delete_child_sa_job_create(reqid, protocol, spi);
-	}
-	else
-	{
-		job = (job_t*)rekey_child_sa_job_create(reqid, protocol, spi);
-	}
-	charon->processor->queue_job(charon->processor, job);
-	return JOB_REQUEUE_NONE;
-}
-
-/**
- * Schedule an expire job for an SA. Time is in seconds.
- */
-static void schedule_expire(private_kernel_klips_ipsec_t *this,
-							protocol_id_t protocol, u_int32_t spi,
-							u_int32_t reqid, expire_type_t type, u_int32_t time)
-{
-	callback_job_t *job;
-	sa_expire_t *expire = malloc_thing(sa_expire_t);
-	expire->this = this;
-	expire->protocol = protocol;
-	expire->spi = spi;
-	expire->reqid = reqid;
-	expire->type = type;
-	job = callback_job_create((callback_job_cb_t)sa_expires, expire, free, NULL);
-	charon->scheduler->schedule_job(charon->scheduler, (job_t*)job, time);
-}
-
-METHOD(kernel_ipsec_t, get_spi, status_t,
-	private_kernel_klips_ipsec_t *this, host_t *src, host_t *dst,
-	protocol_id_t protocol, u_int32_t reqid, u_int32_t *spi)
-{
-	/* we cannot use SADB_GETSPI because KLIPS does not allow us to set the
-	 * NAT-T type in an SADB_UPDATE which we would have to use to update the
-	 * implicitly created SA.
-	 */
-	rng_t *rng;
-	u_int32_t spi_gen;
-
-	rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK);
-	if (!rng)
-	{
-		DBG1(DBG_KNL, "allocating SPI failed: no RNG");
-		return FAILED;
-	}
-	rng->get_bytes(rng, sizeof(spi_gen), (void*)&spi_gen);
-	rng->destroy(rng);
-
-	/* charon's SPIs lie within the range from 0xc0000000 to 0xcFFFFFFF */
-	spi_gen = 0xc0000000 | (spi_gen & 0x0FFFFFFF);
-
-	DBG2(DBG_KNL, "allocated SPI %.8x for %N SA between %#H..%#H",
-			spi_gen, protocol_id_names, protocol, src, dst);
-
-	*spi = htonl(spi_gen);
-
-	this->mutex->lock(this->mutex);
-	this->allocated_spis->insert_last(this->allocated_spis,
-			create_sa_entry(protocol, *spi, reqid, NULL, NULL, FALSE, TRUE));
-	this->mutex->unlock(this->mutex);
-	schedule_expire(this, protocol, *spi, reqid, EXPIRE_TYPE_SPI, SPI_TIMEOUT);
-
-	return SUCCESS;
-}
-
-METHOD(kernel_ipsec_t, get_cpi, status_t,
-	private_kernel_klips_ipsec_t *this, host_t *src, host_t *dst,
-	u_int32_t reqid, u_int16_t *cpi)
-{
-	return FAILED;
-}
-
-/**
- * Add a pseudo IPIP SA for tunnel mode with KLIPS.
- */
-static status_t add_ipip_sa(private_kernel_klips_ipsec_t *this,
-					   host_t *src, host_t *dst, u_int32_t spi, u_int32_t reqid)
-{
-	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, "adding pseudo IPIP SA with SPI %.8x and reqid {%d}", ntohl(spi), reqid);
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_ADD;
-	msg->sadb_msg_satype = SADB_X_SATYPE_IPIP;
-	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;
-	sa->sadb_sa_state = SADB_SASTATE_MATURE;
-	PFKEY_EXT_ADD(msg, sa);
-
-	add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC);
-	add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST);
-
-	if (pfkey_send(this, msg, &out, &len) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to add pseudo IPIP SA with SPI %.8x", ntohl(spi));
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "unable to add pseudo IPIP SA with SPI %.8x: %s (%d)",
-				ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno);
-		free(out);
-		return FAILED;
-	}
-
-	free(out);
-	return SUCCESS;
-}
-
-/**
- * group the IPIP SA required for tunnel mode with the outer SA
- */
-static status_t group_ipip_sa(private_kernel_klips_ipsec_t *this,
-					   host_t *src, host_t *dst, u_int32_t spi,
-					   protocol_id_t protocol, u_int32_t reqid)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	struct sadb_sa *sa;
-	struct sadb_x_satype *satype;
-	size_t len;
-
-	memset(&request, 0, sizeof(request));
-
-	DBG2(DBG_KNL, "grouping SAs with SPI %.8x and reqid {%d}", ntohl(spi), reqid);
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_X_GRPSA;
-	msg->sadb_msg_satype = SADB_X_SATYPE_IPIP;
-	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;
-	sa->sadb_sa_state = SADB_SASTATE_MATURE;
-	PFKEY_EXT_ADD(msg, sa);
-
-	add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST);
-
-	satype = (struct sadb_x_satype*)PFKEY_EXT_ADD_NEXT(msg);
-	satype->sadb_x_satype_exttype = SADB_X_EXT_SATYPE2;
-	satype->sadb_x_satype_len = PFKEY_LEN(sizeof(struct sadb_x_satype));
-	satype->sadb_x_satype_satype = proto_ike2satype(protocol);
-	PFKEY_EXT_ADD(msg, satype);
-
-	sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg);
-	sa->sadb_sa_exttype = SADB_X_EXT_SA2;
-	sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa));
-	sa->sadb_sa_spi = spi;
-	sa->sadb_sa_state = SADB_SASTATE_MATURE;
-	PFKEY_EXT_ADD(msg, sa);
-
-	add_addr_ext(msg, dst, SADB_X_EXT_ADDRESS_DST2);
-
-	if (pfkey_send(this, msg, &out, &len) != SUCCESS)
-	{
-		DBG1(DBG_KNL, "unable to group SAs with SPI %.8x", ntohl(spi));
-		return FAILED;
-	}
-	else if (out->sadb_msg_errno)
-	{
-		DBG1(DBG_KNL, "unable to group SAs 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, add_sa, status_t,
-	private_kernel_klips_ipsec_t *this, host_t *src, host_t *dst, u_int32_t spi,
-	protocol_id_t protocol, u_int32_t reqid, 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_key *key;
-	size_t len;
-
-	if (inbound)
-	{
-		/* for inbound SAs we allocated an SPI via get_spi, so we first check
-		 * whether that SPI has already expired (race condition) */
-		sa_entry_t *alloc_spi;
-		this->mutex->lock(this->mutex);
-		if (this->allocated_spis->find_first(this->allocated_spis,
-				(linked_list_match_t)sa_entry_match_byid, (void**)&alloc_spi,
-					&protocol, &spi, &reqid) != SUCCESS)
-		{
-			this->mutex->unlock(this->mutex);
-			DBG1(DBG_KNL, "allocated SPI %.8x has already expired", ntohl(spi));
-			return FAILED;
-		}
-		else
-		{
-			this->allocated_spis->remove(this->allocated_spis, alloc_spi, NULL);
-			sa_entry_destroy(alloc_spi);
-		}
-		this->mutex->unlock(this->mutex);
-	}
-
-	memset(&request, 0, sizeof(request));
-
-	DBG2(DBG_KNL, "adding SAD entry with SPI %.8x and reqid {%d}", ntohl(spi), reqid);
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_ADD;
-	msg->sadb_msg_satype = proto_ike2satype(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;
-	sa->sadb_sa_state = SADB_SASTATE_MATURE;
-	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);
-
-	add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC);
-	add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST);
-
-	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*/
-	}
-
-	if (encap)
-	{
-		add_encap_ext(msg, src, dst, FALSE);
-	}
-
-	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);
-
-	/* for tunnel mode SAs we have to install an additional IPIP SA and
-	 * group the two SAs together */
-	if (mode == MODE_TUNNEL)
-	{
-		if (add_ipip_sa(this, src, dst, spi, reqid) != SUCCESS ||
-			group_ipip_sa(this, src, dst, spi, protocol, reqid) != SUCCESS)
-		{
-			DBG1(DBG_KNL, "unable to add SAD entry with SPI %.8x", ntohl(spi));
-			return FAILED;
-		}
-	}
-
-	this->mutex->lock(this->mutex);
-	/* we cache this SA for two reasons:
-	 * - in case an SADB_X_NAT_T_MAPPING_NEW event occurs (we need to find the reqid then)
-	 * - to decide if an expired SA is still installed */
-	this->installed_sas->insert_last(this->installed_sas,
-				create_sa_entry(protocol, spi, reqid, src, dst, encap, inbound));
-	this->mutex->unlock(this->mutex);
-
-	/* Although KLIPS supports SADB_EXT_LIFETIME_SOFT/HARD, we handle the lifetime
-	 * of SAs manually in the plugin. Refer to the comments in receive_events()
-	 * for details. */
-	if (lifetime->time.rekey)
-	{
-		schedule_expire(this, protocol, spi, reqid, EXPIRE_TYPE_SOFT, lifetime->time.rekey);
-	}
-
-	if (lifetime->time.life)
-	{
-		schedule_expire(this, protocol, spi, reqid, EXPIRE_TYPE_HARD, lifetime->time.life);
-	}
-
-	return SUCCESS;
-}
-
-METHOD(kernel_ipsec_t, update_sa, status_t,
-	private_kernel_klips_ipsec_t *this, u_int32_t spi, protocol_id_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)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	struct sadb_sa *sa;
-	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;
-	}
-
-	/* because KLIPS does not allow us to change the NAT-T type in an SADB_UPDATE,
-	 * we can't update the SA if the encap flag has changed since installing it */
-	if (encap != new_encap)
-	{
-		DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x: change of UDP"
-				" encapsulation is not supported", ntohl(spi));
-		return NOT_SUPPORTED;
-	}
-
-	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 = proto_ike2satype(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;
-	sa->sadb_sa_encrypt = SADB_EALG_AESCBC; /* ignored */
-	sa->sadb_sa_auth = SADB_AALG_SHA1HMAC; /* ignored */
-	sa->sadb_sa_state = SADB_SASTATE_MATURE;
-	PFKEY_EXT_ADD(msg, sa);
-
-	add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC);
-	add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST);
-
-	add_encap_ext(msg, new_src, new_dst, TRUE);
-
-	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_klips_ipsec_t *this, host_t *src, host_t *dst,
-	u_int32_t spi, protocol_id_t protocol, u_int64_t *bytes)
-{
-	return NOT_SUPPORTED;  /* TODO */
-}
-
-METHOD(kernel_ipsec_t, del_sa, status_t,
-	private_kernel_klips_ipsec_t *this, host_t *src, host_t *dst,
-	u_int32_t spi, protocol_id_t protocol, u_int16_t cpi)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg, *out;
-	struct sadb_sa *sa;
-	sa_entry_t *cached_sa;
-	size_t len;
-
-	memset(&request, 0, sizeof(request));
-
-	/* all grouped SAs are automatically deleted by KLIPS as soon as
-	 * one of them is deleted, therefore we delete only the main one */
-	DBG2(DBG_KNL, "deleting SAD entry with SPI %.8x", ntohl(spi));
-
-	this->mutex->lock(this->mutex);
-	/* this should not fail, but we don't care if it does, let the kernel decide
-	 * whether this SA exists or not */
-	if (this->installed_sas->find_first(this->installed_sas,
-			(linked_list_match_t)sa_entry_match_bydst, (void**)&cached_sa,
-			&protocol, &spi, dst) == SUCCESS)
-	{
-		this->installed_sas->remove(this->installed_sas, cached_sa, NULL);
-		sa_entry_destroy(cached_sa);
-	}
-	this->mutex->unlock(this->mutex);
-
-	msg = (struct sadb_msg*)request;
-	msg->sadb_msg_version = PF_KEY_V2;
-	msg->sadb_msg_type = SADB_DELETE;
-	msg->sadb_msg_satype = proto_ike2satype(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 an 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);
-
-	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_klips_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, protocol_id_t protocol,
-	u_int32_t reqid, 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;
-	policy_entry_t *policy, *found = NULL;
-	u_int8_t satype;
-	size_t len;
-
-	if (direction == POLICY_FWD)
-	{
-		/* no forward policies for KLIPS */
-		return SUCCESS;
-	}
-
-	/* tunnel mode policies direct the packets into the pseudo IPIP SA */
-	satype = (mode == MODE_TUNNEL) ? SADB_X_SATYPE_IPIP :
-									 proto_ike2satype(protocol);
-
-	/* create a policy */
-	policy = create_policy_entry(src_ts, dst_ts, direction);
-
-	/* 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 */
-		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);
-	}
-
-	if (routed)
-	{
-		/* we install this as a %trap eroute in the kernel, later to be
-		 * triggered by packets matching the policy (-> ACQUIRE). */
-		spi = htonl(SPI_TRAP);
-		satype = SADB_X_SATYPE_INT;
-
-		/* the reqid is always set to the latest child SA that trapped this
-		 * policy. we will need this reqid upon receiving an acquire. */
-		policy->reqid = reqid;
-
-		/* increase the trap counter */
-		policy->trapcount++;
-
-		if (policy->activecount)
-		{
-			/* we do not replace the current policy in the kernel while a
-			 * policy is actively used */
-			this->mutex->unlock(this->mutex);
-			return SUCCESS;
-		}
-	}
-	else
-	{
-		/* increase the reference counter */
-		policy->activecount++;
-	}
-
-	DBG2(DBG_KNL, "adding policy %R === %R %N", src_ts, dst_ts,
-				   policy_dir_names, direction);
-
-	memset(&request, 0, sizeof(request));
-
-	msg = (struct sadb_msg*)request;
-
-	/* FIXME: SADB_X_SAFLAGS_INFLOW may be required, if we add an inbound policy for an IPIP SA */
-	build_addflow(msg, satype, spi, routed ? NULL : src, routed ? NULL : dst,
-			policy->src.net, policy->src.mask, policy->dst.net, policy->dst.mask,
-			policy->src.proto, found != NULL);
-
-	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;
-	}
-	free(out);
-
-	this->mutex->lock(this->mutex);
-
-	/* we try to find the policy again and install the route if needed */
-	if (this->policies->find_last(this->policies, NULL, (void**)&policy) != SUCCESS)
-	{
-		this->mutex->unlock(this->mutex);
-		DBG2(DBG_KNL, "the policy %R === %R %N is already gone, ignoring",
-				src_ts, dst_ts, policy_dir_names, direction);
-		return SUCCESS;
-	}
-
-	/* KLIPS requires a special route that directs traffic that matches this
-	 * policy to one of the virtual ipsec interfaces. The virtual interface
-	 * has to be attached to the physical one the traffic runs over.
-	 * This is a special case of the source route we install in other kernel
-	 * interfaces.
-	 * In the following cases we do NOT install a source route (but just a
-	 * regular route):
-	 * - we are not in tunnel mode
-	 * - we are using IPv6 (does not work correctly yet!)
-	 * - routing is disabled via strongswan.conf
-	 */
-	if (policy->route == NULL && direction == POLICY_OUT)
-	{
-		char *iface;
-		ipsec_dev_t *dev;
-		route_entry_t *route = malloc_thing(route_entry_t);
-		route->src_ip = NULL;
-
-		if (mode != MODE_TRANSPORT && src->get_family(src) != AF_INET6 &&
-			this->install_routes)
-		{
-			charon->kernel_interface->get_address_by_ts(charon->kernel_interface,
-						src_ts, &route->src_ip);
-		}
-
-		if (!route->src_ip)
-		{
-			route->src_ip = host_create_any(src->get_family(src));
-		}
-
-		/* find the virtual interface */
-		iface = charon->kernel_interface->get_interface(charon->kernel_interface,
-														src);
-		if (find_ipsec_dev(this, iface, &dev) == SUCCESS)
-		{
-			/* above, we got either the name of a virtual or a physical
-			 * interface. for both cases it means we already have the devices
-			 * properly attached (assuming that we are exclusively attaching
-			 * ipsec devices). */
-			dev->refcount++;
-		}
-		else
-		{
-			/* there is no record of a mapping with the returned interface.
-			 * thus, we attach the first free virtual interface we find to
-			 * it. As above we assume we are the only client fiddling with
-			 * ipsec devices. */
-			if (this->ipsec_devices->find_first(this->ipsec_devices,
-					(linked_list_match_t)ipsec_dev_match_free,
-						(void**)&dev) == SUCCESS)
-			{
-				if (attach_ipsec_dev(dev->name, iface) == SUCCESS)
-				{
-					strncpy(dev->phys_name, iface, IFNAMSIZ);
-					dev->refcount = 1;
-				}
-				else
-				{
-					DBG1(DBG_KNL, "failed to attach virtual interface %s"
-							" to %s", dev->name, iface);
-					this->mutex->unlock(this->mutex);
-					free(iface);
-					return FAILED;
-				}
-			}
-			else
-			{
-				this->mutex->unlock(this->mutex);
-				DBG1(DBG_KNL, "failed to attach a virtual interface to %s: no"
-						" virtual interfaces left", iface);
-				free(iface);
-				return FAILED;
-			}
-		}
-		free(iface);
-		route->if_name = strdup(dev->name);
-
-		/* get the nexthop to dst */
-		route->gateway = charon->kernel_interface->get_nexthop(
-										charon->kernel_interface, dst);
-		route->dst_net = chunk_clone(policy->dst.net->get_address(policy->dst.net));
-		route->prefixlen = policy->dst.mask;
-
-		switch (charon->kernel_interface->add_route(charon->kernel_interface,
-				route->dst_net, route->prefixlen, route->gateway,
-				route->src_ip, route->if_name))
-		{
-			default:
-				DBG1(DBG_KNL, "unable to install route for policy %R === %R",
-					 src_ts, dst_ts);
-				/* FALL */
-			case ALREADY_DONE:
-				/* route exists, do not uninstall */
-				route_entry_destroy(route);
-				break;
-			case SUCCESS:
-				/* cache the installed route */
-				policy->route = route;
-				break;
-		}
-	}
-
-	this->mutex->unlock(this->mutex);
-
-	return SUCCESS;
-}
-
-METHOD(kernel_ipsec_t, query_policy, status_t,
-	private_kernel_klips_ipsec_t *this, traffic_selector_t *src_ts,
-	traffic_selector_t *dst_ts, policy_dir_t direction, u_int32_t *use_time)
-{
-	#define IDLE_PREFIX "idle="
-	static const char *path_eroute = "/proc/net/ipsec_eroute";
-	static const char *path_spi = "/proc/net/ipsec_spi";
-	FILE *file;
-	char line[1024], src[INET6_ADDRSTRLEN + 9], dst[INET6_ADDRSTRLEN + 9];
-	char *said = NULL, *pos;
-	policy_entry_t *policy, *found = NULL;
-	status_t status = FAILED;
-
-	if (direction == POLICY_FWD)
-	{
-		/* we do not install forward policies */
-		return FAILED;
-	}
-
-	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);
-
-	/* 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)
-	{
-		this->mutex->unlock(this->mutex);
-		DBG1(DBG_KNL, "querying policy %R === %R %N failed, not found", src_ts,
-					   dst_ts, policy_dir_names, direction);
-		policy_entry_destroy(policy);
-		return NOT_FOUND;
-	}
-	policy_entry_destroy(policy);
-	policy = found;
-
-	/* src and dst selectors in KLIPS are of the form NET_ADDR/NETBITS:PROTO */
-	snprintf(src, sizeof(src), "%H/%d:%d", policy->src.net, policy->src.mask,
-			policy->src.proto);
-	src[sizeof(src) - 1] = '\0';
-	snprintf(dst, sizeof(dst), "%H/%d:%d", policy->dst.net, policy->dst.mask,
-			policy->dst.proto);
-	dst[sizeof(dst) - 1] = '\0';
-
-	this->mutex->unlock(this->mutex);
-
-	/* we try to find the matching eroute first */
-	file = fopen(path_eroute, "r");
-	if (file == NULL)
-	{
-		DBG1(DBG_KNL, "unable to query policy %R === %R %N: %s (%d)", src_ts,
-				dst_ts, policy_dir_names, direction, strerror(errno), errno);
-		return FAILED;
-	}
-
-	/* read line by line where each line looks like:
-	 * packets  src  ->  dst  =>  said */
-	while (fgets(line, sizeof(line), file))
-	{
-		enumerator_t *enumerator;
-		char *token;
-		int i = 0;
-
-		enumerator = enumerator_create_token(line, " \t", " \t\n");
-		while (enumerator->enumerate(enumerator, &token))
-		{
-			switch (i++)
-			{
-				case 0: /* packets */
-					continue;
-				case 1: /* src */
-					if (streq(token, src))
-					{
-						continue;
-					}
-					break;
-				case 2: /* -> */
-					continue;
-				case 3: /* dst */
-					if (streq(token, dst))
-					{
-						continue;
-					}
-					break;
-				case 4: /* => */
-					continue;
-				case 5: /* said */
-					said = strdup(token);
-					break;
-			}
-			break;
-		}
-		enumerator->destroy(enumerator);
-
-		if (i == 5)
-		{
-			/* eroute matched */
-			break;
-		}
-	}
-	fclose(file);
-
-	if (said == NULL)
-	{
-		DBG1(DBG_KNL, "unable to query policy %R === %R %N: found no matching"
-				" eroute", src_ts, dst_ts, policy_dir_names, direction);
-		return FAILED;
-	}
-
-	/* compared with the one in the spi entry the SA ID from the eroute entry
-	 * has an additional ":PROTO" appended, which we need to cut off */
-	pos = strrchr(said, ':');
-	*pos = '\0';
-
-	/* now we try to find the matching spi entry */
-	file = fopen(path_spi, "r");
-	if (file == NULL)
-	{
-		DBG1(DBG_KNL, "unable to query policy %R === %R %N: %s (%d)", src_ts,
-				dst_ts, policy_dir_names, direction, strerror(errno), errno);
-		return FAILED;
-	}
-
-	while (fgets(line, sizeof(line), file))
-	{
-		if (strneq(line, said, strlen(said)))
-		{
-			/* fine we found the correct line, now find the idle time */
-			u_int32_t idle_time;
-			pos = strstr(line, IDLE_PREFIX);
-			if (pos == NULL)
-			{
-				/* no idle time, i.e. this SA has not been used yet */
-				break;
-			}
-			if (sscanf(pos, IDLE_PREFIX"%u", &idle_time) <= 0)
-			{
-				/* idle time not valid */
-				break;
-			}
-
-			*use_time = time_monotonic(NULL) - idle_time;
-			status = SUCCESS;
-			break;
-		}
-	}
-	fclose(file);
-	free(said);
-
-	return status;
-}
-
-METHOD(kernel_ipsec_t, del_policy, status_t,
-	private_kernel_klips_ipsec_t *this, traffic_selector_t *src_ts,
-	traffic_selector_t *dst_ts, policy_dir_t direction, bool unrouted)
-{
-	unsigned char request[PFKEY_BUFFER_SIZE];
-	struct sadb_msg *msg = (struct sadb_msg*)request, *out;
-	policy_entry_t *policy, *found = NULL;
-	route_entry_t *route;
-	size_t len;
-
-	if (direction == POLICY_FWD)
-	{
-		/* no forward policies for KLIPS */
-		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);
-
-	/* 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)
-	{
-		this->mutex->unlock(this->mutex);
-		DBG1(DBG_KNL, "deleting policy %R === %R %N failed, not found", src_ts,
-					   dst_ts, policy_dir_names, direction);
-		policy_entry_destroy(policy);
-		return NOT_FOUND;
-	}
-	policy_entry_destroy(policy);
-
-	/* decrease appropriate counter */
-	unrouted ? found->trapcount-- : found->activecount--;
-
-	if (found->trapcount == 0)
-	{
-		/* if this policy is finally unrouted, we reset the reqid because it
-		 * may still be actively used and there might be a pending acquire for
-		 * this policy. */
-		found->reqid = 0;
-	}
-
-	if (found->activecount > 0)
-	{
-		/* is still used by SAs, keep in kernel */
-		this->mutex->unlock(this->mutex);
-		DBG2(DBG_KNL, "policy still used by another CHILD_SA, not removed");
-		return SUCCESS;
-	}
-	else if (found->activecount == 0 && found->trapcount > 0)
-	{
-		/* for a policy that is not used actively anymore, but is still trapped
-		 * by another child SA we replace the current eroute with a %trap eroute */
-		DBG2(DBG_KNL, "policy still routed by another CHILD_SA, not removed");
-		memset(&request, 0, sizeof(request));
-		build_addflow(msg, SADB_X_SATYPE_INT, htonl(SPI_TRAP), NULL, NULL,
-				found->src.net, found->src.mask, found->dst.net,
-				found->dst.mask, found->src.proto, TRUE);
-		this->mutex->unlock(this->mutex);
-		return pfkey_send_ack(this, msg);
-	}
-
-	/* remove if last reference */
-	this->policies->remove(this->policies, found, NULL);
-	policy = found;
-
-	this->mutex->unlock(this->mutex);
-
-	memset(&request, 0, sizeof(request));
-
-	build_delflow(msg, 0, policy->src.net, policy->src.mask, policy->dst.net,
-			policy->dst.mask, policy->src.proto);
-
-	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)
-	{
-		ipsec_dev_t *dev;
-
-		if (charon->kernel_interface->del_route(charon->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);
-		}
-
-		/* we have to detach the ipsec interface from the physical one over which
-		 * this SA ran (if it is not used by any other) */
-		this->mutex->lock(this->mutex);
-
-		if (find_ipsec_dev(this, route->if_name, &dev) == SUCCESS)
-		{
-			/* fine, we found a matching device object, let's check if we have
-			 * to detach it. */
-			if (--dev->refcount == 0)
-			{
-				if (detach_ipsec_dev(dev->name, dev->phys_name) != SUCCESS)
-				{
-					DBG1(DBG_KNL, "failed to detach virtual interface %s"
-							" from %s", dev->name, dev->phys_name);
-				}
-				dev->phys_name[0] = '\0';
-			}
-		}
-
-		this->mutex->unlock(this->mutex);
-
-		route_entry_destroy(route);
-	}
-
-	return SUCCESS;
-}
-
-/**
- * Initialize the list of ipsec devices
- */
-static void init_ipsec_devices(private_kernel_klips_ipsec_t *this)
-{
-	int i, count = lib->settings->get_int(lib->settings,
-						"charon.plugins.kernel-klips.ipsec_dev_count",
-						DEFAULT_IPSEC_DEV_COUNT);
-
-	for (i = 0; i < count; ++i)
-	{
-		ipsec_dev_t *dev = malloc_thing(ipsec_dev_t);
-		snprintf(dev->name, IFNAMSIZ, IPSEC_DEV_PREFIX"%d", i);
-		dev->name[IFNAMSIZ - 1] = '\0';
-		dev->phys_name[0] = '\0';
-		dev->refcount = 0;
-		this->ipsec_devices->insert_last(this->ipsec_devices, dev);
-
-		/* detach any previously attached ipsec device */
-		detach_ipsec_dev(dev->name, dev->phys_name);
-	}
-}
-
-/**
- * Register a socket for AQUIRE/EXPIRE messages
- */
-static status_t register_pfkey_socket(private_kernel_klips_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_klips_ipsec_t *this, int fd, int family)
-{
-	/* KLIPS does not need a bypass policy for IKE */
-	return TRUE;
-}
-
-METHOD(kernel_ipsec_t, destroy, void,
-	private_kernel_klips_ipsec_t *this)
-{
-	if (this->job)
-	{
-		this->job->cancel(this->job);
-	}
-	if (this->socket > 0)
-	{
-		close(this->socket);
-	}
-	if (this->socket_evnets > 0)
-	{
-		close(this->socket_events);
-	}
-	this->mutex_pfkey->destroy(this->mutex_pfkey);
-	this->mutex->destroy(this->mutex);
-	this->ipsec_devices->destroy_function(this->ipsec_devices, (void*)ipsec_dev_destroy);
-	this->installed_sas->destroy_function(this->installed_sas, (void*)sa_entry_destroy);
-	this->allocated_spis->destroy_function(this->allocated_spis, (void*)sa_entry_destroy);
-	this->policies->destroy_function(this->policies, (void*)policy_entry_destroy);
-	free(this);
-}
-
-/*
- * Described in header.
- */
-kernel_klips_ipsec_t *kernel_klips_ipsec_create()
-{
-	private_kernel_klips_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(),
-		.allocated_spis = linked_list_create(),
-		.installed_sas = linked_list_create(),
-		.ipsec_devices = 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),
-	);
-
-	/* initialize ipsec devices */
-	init_ipsec_devices(this);
-
-	/* 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);
-	charon->processor->queue_job(charon->processor, (job_t*)this->job);
-
-	return &this->public;
-}
-