- import of strongswan-2.7.0

- applied patch for charon

1 files changed, 0 insertions, 729 deletions

diff --git a/Source/charon/threads/kernel_interface.c b/Source/charon/threads/kernel_interface.c
deleted file mode 100644
index 679cf69ee..000000000
--- a/Source/charon/threads/kernel_interface.c
+++ /dev/null
@@ -1,729 +0,0 @@
-/**
- * @file kernel_interface.c
- *
- * @brief Implementation of kernel_interface_t.
- *
- */
-
-/*
- * Copyright (C) 2005 Jan Hutter, Martin Willi
- * Hochschule fuer Technik Rapperswil
- * Copyright (C) 2003 Herbert Xu.
- * 
- * Contains modified parts from pluto.
- *
- * 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 <linux/netlink.h>
-#include <pthread.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-
-#include "kernel_interface.h"
-
-#include <daemon.h>
-#include <utils/linked_list.h>
-
-
-#define KERNEL_ESP 50
-#define KERNEL_AH 51
-
-#define SPD_PRIORITY 1024
-
-#define XFRM_DATA_LENGTH 512
-
-
-typedef struct xfrm_data_t xfrm_data_t;
-
-/**
- * Lenght/Type/data struct for userdata in xfrm
- * We dont use the "I-don't-know-where-they-come-from"-structs
- * used in the kernel.
- */
-struct xfrm_data_t {
-	/**
-	 * length of the data
-	 */
-	u_int16_t length;
-	
-	/**
-	 * type of data 
-	 */
-	u_int16_t type;
-	
-	/**
-	 * and the data itself, for different purposes
-	 */
-	union {
-		/** algorithm */
-		struct xfrm_algo algo;
-		/** policy tmpl */
-		struct xfrm_user_tmpl tmpl[2];
-	};
-};
-
-
-typedef struct netlink_message_t netlink_message_t;
-
-/**
- * Representation of ANY netlink message used
- */
-struct netlink_message_t {
-	
-	/**
-	 * header of the netlink message 
-	 */
-	struct nlmsghdr hdr;
-
-	union {
-		/** error message */
-		struct nlmsgerr e;
-		/** message for spi allocation */
-		struct xfrm_userspi_info spi;
-		/** message for SA manipulation */
-		struct xfrm_usersa_id sa_id;
-		/** message for SA installation */
-		struct xfrm_usersa_info sa;
-		/** message for policy manipulation */
-		struct xfrm_userpolicy_id policy_id;
-		/** message for policy installation */
-		struct xfrm_userpolicy_info policy;
-	};
-	u_int8_t data[XFRM_DATA_LENGTH];
-};
-
-
-typedef struct private_kernel_interface_t private_kernel_interface_t;
-
- /**
- * @brief Private Variables and Functions of kernel_interface class.
- *
- */
-struct private_kernel_interface_t {
-	/**
-	 * Public part of the kernel_interface_t object.
-	 */
-	kernel_interface_t public;
-	
-	/**
-	 * Netlink communication socket.
-	 */
-	int socket;
-	
-	/**
-	 * Process id of kernel thread
-	 */
-	pid_t pid;
-	
-	/**
-	 * Sequence number for messages.
-	 */
-	u_int32_t seq;
-	
-	/** 
-	 * List of responded messages.
-	 */
-	linked_list_t *responses;
-	
-	/**
-	 * Thread which receives messages.
-	 */
-	pthread_t thread;
-	
-	/**
-	 * Mutex locks access to replies list.
-	 */
-	pthread_mutex_t mutex;
-	
-	/**
-	 * Condvar allows signaling of threads waiting for a reply.
-	 */
-	pthread_cond_t condvar;
-	
-	/**
-	 * Logger for XFRM stuff
-	 */
-	logger_t *logger;
-	
-	/**
-	 * Function for the thread, receives messages.
-	 */
-	void (*receive_messages) (private_kernel_interface_t *this);
-	
-	/**
-	 * Sends a netlink_message_t down to the kernel and wait for reply.
-	 */
-	status_t (*send_message) (private_kernel_interface_t *this, netlink_message_t *request, netlink_message_t **response);
-};
-
-/**
- * In the kernel, algorithms are identified as strings, we use our
- * mapping functions...
- * Algorithms for encryption.
- * TODO: Add missing algorithm strings
- */
-mapping_t kernel_encryption_algs_m[] = {
-	{ENCR_DES_IV64, ""},
-	{ENCR_DES, "des"},
-	{ENCR_3DES, "des3_ede"},
-	{ENCR_RC5, ""},
-	{ENCR_IDEA, "idea"},
-	{ENCR_CAST, "cast128"},
-	{ENCR_BLOWFISH, "blowfish"},
-	{ENCR_3IDEA, ""},
-	{ENCR_DES_IV32, ""},
-	{ENCR_NULL, ""},
-	{ENCR_AES_CBC, "aes"},
-	{ENCR_AES_CTR, ""},
-	{MAPPING_END, NULL}
-};
-/**
- * In the kernel, algorithms are identified as strings, we use our
- * mapping functions...
- * Algorithms for integrity protection.
- * TODO: Add missing algorithm strings
- */
-mapping_t kernel_integrity_algs_m[] = {
-	{AUTH_HMAC_MD5_96, "md5"},
-	{AUTH_HMAC_SHA1_96, "sha1"},
-	{AUTH_DES_MAC, ""},
-	{AUTH_KPDK_MD5, ""},
-	{AUTH_AES_XCBC_96, ""},
-	{MAPPING_END, NULL}
-};
-
-
-/**
- * Implementation of kernel_interface_t.get_spi.
- */
-static status_t get_spi(private_kernel_interface_t *this, 
-						host_t *src, host_t *dest, 
-						protocol_id_t protocol, u_int32_t reqid,
-						u_int32_t *spi)
-{
-	netlink_message_t request, *response;
-	status_t status = SUCCESS;
-	
-	
-	this->logger->log(this->logger, CONTROL|LEVEL2, "getting spi");
-	
-	memset(&request, 0, sizeof(request));
-	request.hdr.nlmsg_len = NLMSG_ALIGN(NLMSG_LENGTH(sizeof(request.spi)));
-	request.hdr.nlmsg_flags = NLM_F_REQUEST;
-	request.hdr.nlmsg_type = XFRM_MSG_ALLOCSPI;
-	request.spi.info.saddr = src->get_xfrm_addr(src);
-	request.spi.info.id.daddr = dest->get_xfrm_addr(dest);
-	request.spi.info.mode = TRUE; /* tunnel mode */
-	request.spi.info.reqid = reqid;
-	request.spi.info.id.proto = (protocol == PROTO_ESP) ? KERNEL_ESP : KERNEL_AH;
-	request.spi.info.family = PF_INET;
-	request.spi.min = 0xc0000000;
-	request.spi.max = 0xcFFFFFFF;
-	
-	if (this->send_message(this, &request, &response) != SUCCESS)
-	{
-		this->logger->log(this->logger, ERROR, "netlink communication failed");
-		return FAILED;
-	}
-	else if (response->hdr.nlmsg_type == NLMSG_ERROR)
-	{
-		this->logger->log(this->logger, ERROR, "netlink request XFRM_MSG_ALLOCSPI got an error: %s",
-						  strerror(-response->e.error));
-		status = FAILED;
-	}
-	else if (response->hdr.nlmsg_type != XFRM_MSG_NEWSA)
-	{
-		this->logger->log(this->logger, ERROR, "netlink request XFRM_MSG_ALLOCSPI got a unknown reply");
-		status = FAILED;
-	}
-	else if (response->hdr.nlmsg_len < NLMSG_LENGTH(sizeof(response->sa)))
-	{
-		this->logger->log(this->logger, ERROR, "netlink request XFRM_MSG_ALLOCSPI got an invalid reply");
-		status = FAILED;
-	}
-	else
-	{
-		*spi = response->sa.id.spi;
-	}
-	free(response);
-	
-	return status;
-}
-
-/**
- * Implementation of kernel_interface_t.add_sa.
- */
-static status_t add_sa(	private_kernel_interface_t *this,
-						host_t *me,
-						host_t *other,
-						u_int32_t spi,
-						int protocol,
-						u_int32_t reqid,
-						encryption_algorithm_t enc_alg,
-						chunk_t encryption_key,
-						integrity_algorithm_t int_alg,
-						chunk_t integrity_key,
-						bool replace)
-{
-	netlink_message_t request, *response;
-	memset(&request, 0, sizeof(request));
-	status_t status = SUCCESS;
-	
-	this->logger->log(this->logger, CONTROL|LEVEL2, "adding SA");
-	
-	request.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
-	request.hdr.nlmsg_type = replace ? XFRM_MSG_UPDSA : XFRM_MSG_NEWSA;
-	
-	request.sa.saddr = me->get_xfrm_addr(me);
-	request.sa.id.daddr = other->get_xfrm_addr(other);
-	
-	request.sa.id.spi = spi;
-	request.sa.id.proto = (protocol == PROTO_ESP) ? KERNEL_ESP : KERNEL_AH;
-	request.sa.family = me->get_family(me);
-	request.sa.mode = TRUE; /* tunnel mode */
-	request.sa.replay_window = 32;
-	request.sa.reqid = reqid;
-	request.sa.lft.soft_byte_limit = XFRM_INF;
-	request.sa.lft.soft_packet_limit = XFRM_INF;
-	request.sa.lft.hard_byte_limit = XFRM_INF;
-	request.sa.lft.hard_packet_limit = XFRM_INF;
-	
-	request.hdr.nlmsg_len = NLMSG_ALIGN(NLMSG_LENGTH(sizeof(request.sa)));
-	
-	if (enc_alg != ENCR_UNDEFINED)
-	{
-		xfrm_data_t *data = (xfrm_data_t*)(((u_int8_t*)&request) + request.hdr.nlmsg_len);
-		
-		data->type = XFRMA_ALG_CRYPT;
-		data->length = 4 + sizeof(data->algo) + encryption_key.len;
-		data->algo.alg_key_len = encryption_key.len * 8;
-		request.hdr.nlmsg_len += data->length;
-		if (request.hdr.nlmsg_len > sizeof(request))
-		{
-			return FAILED;
-		}
-		strcpy(data->algo.alg_name, mapping_find(kernel_encryption_algs_m, enc_alg));
-		memcpy(data->algo.alg_key, encryption_key.ptr, encryption_key.len);
-	}
-	
-	if (int_alg != AUTH_UNDEFINED)
-	{
-		xfrm_data_t *data = (xfrm_data_t*)(((u_int8_t*)&request) + request.hdr.nlmsg_len);
-		
-		data->type = XFRMA_ALG_AUTH;
-		data->length = 4 + sizeof(data->algo) + integrity_key.len;
-		data->algo.alg_key_len = integrity_key.len * 8;
-		request.hdr.nlmsg_len += data->length;
-		if (request.hdr.nlmsg_len > sizeof(request))
-		{
-			return FAILED;
-		}
-		strcpy(data->algo.alg_name, mapping_find(kernel_integrity_algs_m, int_alg));
-		memcpy(data->algo.alg_key, integrity_key.ptr, integrity_key.len);
-	}
-	
-	/* TODO: add IPComp here*/
-	
-	if (this->send_message(this, &request, &response) != SUCCESS)
-	{
-		this->logger->log(this->logger, ERROR, "netlink communication failed");
-		return FAILED;
-	}
-	else if (response->hdr.nlmsg_type != NLMSG_ERROR)
-	{
-		this->logger->log(this->logger, ERROR, "netlink request XFRM_MSG_NEWSA not acknowledged");
-		status = FAILED;
-	}
-	else if (response->e.error)
-	{
-		this->logger->log(this->logger, ERROR, "netlink request XFRM_MSG_NEWSA got error %s",
-						  strerror(-response->e.error));
-		status = FAILED;
-	}
-	
-	free(response);
-	return status;
-}
-
-static status_t del_sa(	private_kernel_interface_t *this,
-						host_t *dst,
-						u_int32_t spi,
-						protocol_id_t protocol)
-{
-	netlink_message_t request, *response;
-	memset(&request, 0, sizeof(request));
-	status_t status = SUCCESS;
-	
-	this->logger->log(this->logger, CONTROL|LEVEL2, "deleting SA");
-	
-	request.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
-	request.hdr.nlmsg_type = XFRM_MSG_DELSA;
-	
-	request.sa_id.daddr = dst->get_xfrm_addr(dst);
-	
-	request.sa_id.spi = spi;
-	request.sa_id.proto = (protocol == PROTO_ESP) ? KERNEL_ESP : KERNEL_AH;
-	request.sa_id.family = dst->get_family(dst);
-	
-	request.hdr.nlmsg_len = NLMSG_ALIGN(NLMSG_LENGTH(sizeof(request.sa_id)));
-	
-	if (this->send_message(this, &request, &response) != SUCCESS)
-	{
-		return FAILED;
-	}
-	else if (response->hdr.nlmsg_type != NLMSG_ERROR)
-	{
-		status = FAILED;
-	}
-	else if (response->e.error)
-	{
-		status = FAILED;
-	}
-	
-	free(response);
-	return status;
-}
-
-/**
- * Implementation of kernel_interface_t.add_policy.
- */
-static status_t add_policy(private_kernel_interface_t *this, 
-						  host_t *me, host_t *other, 
-						  host_t *src, host_t *dst,
-						  u_int8_t src_hostbits, u_int8_t dst_hostbits,
-						  int direction, int upper_proto, 
-						  bool ah, bool esp,
-						  u_int32_t reqid)
-{
-	netlink_message_t request, *response;
-	status_t status = SUCCESS;
-	
-	this->logger->log(this->logger, CONTROL|LEVEL2, "adding policy");
-	
-	memset(&request, 0, sizeof(request));
-	request.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
-
-	request.policy.sel.sport = htons(src->get_port(src));
-	request.policy.sel.dport = htons(dst->get_port(dst));
-	request.policy.sel.sport_mask = (request.policy.sel.sport) ? ~0 : 0;
-	request.policy.sel.dport_mask = (request.policy.sel.dport) ? ~0 : 0;
-	request.policy.sel.saddr = src->get_xfrm_addr(src);
-	request.policy.sel.daddr = dst->get_xfrm_addr(dst);
-	request.policy.sel.prefixlen_s = src_hostbits;
-	request.policy.sel.prefixlen_d = dst_hostbits;
-	request.policy.sel.proto = upper_proto;
-	request.policy.sel.family = src->get_family(src);
-
-	request.hdr.nlmsg_type = XFRM_MSG_NEWPOLICY;
-	request.hdr.nlmsg_len = NLMSG_ALIGN(NLMSG_LENGTH(sizeof(request.policy)));
-
-	request.policy.dir = direction;
-	request.policy.priority = SPD_PRIORITY;
-	request.policy.action = XFRM_POLICY_ALLOW;
-	request.policy.share = XFRM_SHARE_ANY;
-	
-	request.policy.lft.soft_byte_limit = XFRM_INF;
-	request.policy.lft.soft_packet_limit = XFRM_INF;
-	request.policy.lft.hard_byte_limit = XFRM_INF;
-	request.policy.lft.hard_packet_limit = XFRM_INF;
-	
-	if (esp || ah)
-	{
-		xfrm_data_t *data;
-		int tmpl_pos = 0;
-		data = (xfrm_data_t*)(((u_int8_t*)&request) + request.hdr.nlmsg_len);
-		data->type = XFRMA_TMPL;
-		if (esp)
-		{
-			data->tmpl[tmpl_pos].reqid = reqid;
-			data->tmpl[tmpl_pos].id.proto = KERNEL_ESP;
-			data->tmpl[tmpl_pos].aalgos = data->tmpl[tmpl_pos].ealgos = data->tmpl[tmpl_pos].calgos = ~0;
-			data->tmpl[tmpl_pos].mode = TRUE;
-			
-			data->tmpl[tmpl_pos].saddr = me->get_xfrm_addr(me);
-			data->tmpl[tmpl_pos].id.daddr = me->get_xfrm_addr(other);
-			
-			tmpl_pos++;
-		}	
-		if (ah)
-		{
-			data->tmpl[tmpl_pos].reqid = reqid;
-			data->tmpl[tmpl_pos].id.proto = KERNEL_AH;
-			data->tmpl[tmpl_pos].aalgos = data->tmpl[tmpl_pos].ealgos = data->tmpl[tmpl_pos].calgos = ~0;
-			data->tmpl[tmpl_pos].mode = TRUE;
-			
-			data->tmpl[tmpl_pos].saddr = me->get_xfrm_addr(me);
-			data->tmpl[tmpl_pos].id.daddr = other->get_xfrm_addr(other);
-			
-			tmpl_pos++;
-		}
-		data->length = 4 + sizeof(struct xfrm_user_tmpl) * tmpl_pos;
-		request.hdr.nlmsg_len += data->length;
-	}
-	
-	if (this->send_message(this, &request, &response) != SUCCESS)
-	{
-		this->logger->log(this->logger, ERROR, "netlink communication failed");
-		return FAILED;
-	}
-	else if (response->hdr.nlmsg_type != NLMSG_ERROR)
-	{
-		this->logger->log(this->logger, ERROR, "netlink request XFRM_MSG_NEWPOLICY not acknowledged");
-		status = FAILED;
-	}
-	else if (response->e.error)
-	{
-		this->logger->log(this->logger, ERROR, "netlink request XFRM_MSG_NEWPOLICY got error %s",
-						  strerror(-response->e.error));
-		status = FAILED;
-	}
-	
-	free(response);
-	return status;
-}
-
-/**
- * Implementation of kernel_interface_t.del_policy.
- */
-static status_t del_policy(private_kernel_interface_t *this, 
-						   host_t *me, host_t *other, 
-						   host_t *src, host_t *dst,
-						   u_int8_t src_hostbits, u_int8_t dst_hostbits,
-						   int direction, int upper_proto)
-{
-	netlink_message_t request, *response;
-	status_t status = SUCCESS;
-	
-	
-	this->logger->log(this->logger, CONTROL|LEVEL2, "deleting policy");
-	
-	memset(&request, 0, sizeof(request));
-	request.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
-
-	request.policy_id.sel.sport = htons(src->get_port(src));
-	request.policy_id.sel.dport = htons(dst->get_port(dst));
-	request.policy_id.sel.sport_mask = (request.policy.sel.sport) ? ~0 : 0;
-	request.policy_id.sel.dport_mask = (request.policy.sel.dport) ? ~0 : 0;
-	request.policy_id.sel.saddr = src->get_xfrm_addr(src);
-	request.policy_id.sel.daddr = dst->get_xfrm_addr(dst);
-	request.policy_id.sel.prefixlen_s = src_hostbits;
-	request.policy_id.sel.prefixlen_d = dst_hostbits;
-	request.policy_id.sel.proto = upper_proto;
-	request.policy_id.sel.family = src->get_family(src);
-	
-	request.policy_id.dir = direction;
-
-	request.hdr.nlmsg_type = XFRM_MSG_DELPOLICY;
-	request.hdr.nlmsg_len = NLMSG_ALIGN(NLMSG_LENGTH(sizeof(request.policy_id)));
-	
-	if (this->send_message(this, &request, &response) != SUCCESS)
-	{
-		return FAILED;
-	}
-	else if (response->hdr.nlmsg_type != NLMSG_ERROR)
-	{
-		status = FAILED;
-	}
-	else if (response->e.error)
-	{
-		status = FAILED;
-	}
-	
-	free(response);
-	return status;
-}
-
-/**
- * Implementation of private_kernel_interface_t.send_message.
- */
-static status_t send_message(private_kernel_interface_t *this, netlink_message_t *request, netlink_message_t **response)
-{
-	size_t length;
-	struct sockaddr_nl addr;
-	
-	request->hdr.nlmsg_seq = ++this->seq;
-	request->hdr.nlmsg_pid = this->pid;
-	
-	memset(&addr, 0, sizeof(struct sockaddr_nl));
-	addr.nl_family = AF_NETLINK;
-	addr.nl_pid = 0;
-	addr.nl_groups = 0;
-	
-	length = sendto(this->socket,(void *)request, request->hdr.nlmsg_len, 0, (struct sockaddr *)&addr, sizeof(addr));
-	
-	if (length < 0)
-	{
-		return FAILED;
-	}
-	else if (length != request->hdr.nlmsg_len)
-	{
-		return FAILED;
-	}
-	
-	pthread_mutex_lock(&(this->mutex));
-	
-	while (TRUE)
-	{
-		iterator_t *iterator; 
-		bool found = FALSE;
-		/* search list, break if found */
-		iterator = this->responses->create_iterator(this->responses, TRUE);
-		while (iterator->has_next(iterator))
-		{
-			netlink_message_t *listed_response;
-			iterator->current(iterator, (void**)&listed_response);
-			if (listed_response->hdr.nlmsg_seq == request->hdr.nlmsg_seq)
-			{
-				/* matches our request, this is the reply */
-				*response = listed_response;
-				found = TRUE;
-				break;
-			}
-		}
-		iterator->destroy(iterator);
-		
-		if (found)
-		{
-			break;
-		}
-		/* TODO: we should time out, if something goes wrong!??? */
-		pthread_cond_wait(&(this->condvar), &(this->mutex));
-	}
-	
-	pthread_mutex_unlock(&(this->mutex));
-	
-	return SUCCESS;
-}
-
-/**
- * Implementation of private_kernel_interface_t.receive_messages.
- */
-static void receive_messages(private_kernel_interface_t *this)
-{
-	while(TRUE) 
-	{
-		netlink_message_t response, *listed_response;
-		while (TRUE)
-		{
-			struct sockaddr_nl addr;
-			socklen_t addr_length;
-			size_t length;
-			
-			addr_length = sizeof(addr);
-			
-			response.hdr.nlmsg_type = XFRM_MSG_NEWSA;
-			length = recvfrom(this->socket, &response, sizeof(response), 0, (struct sockaddr*)&addr, &addr_length);
-			if (length < 0)
-			{
-				if (errno == EINTR)
-				{
-					/* interrupted, try again */
-					continue;
-				}
-				charon->kill(charon, "receiving from netlink socket failed");
-			}
-			if (!NLMSG_OK(&response.hdr, length))
-			{
-				/* bad netlink message */
-				continue;
-			}
-			if (addr.nl_pid != 0)
-			{
-				/* not from kernel. not interested, try another one */
-				continue;
-			}
-			break;
-		}
-		
-		/* got a valid message.
-		 * requests are handled on our own, 
-		 * responses are listed for the requesters
-		 */
-		if (response.hdr.nlmsg_flags & NLM_F_REQUEST)
-		{
-			/* handle request */	
-		}
-		else
-		{
-			/* add response to queue */			
-			listed_response = malloc(sizeof(response));
-			memcpy(listed_response, &response, sizeof(response));
-
-			pthread_mutex_lock(&(this->mutex));
-			this->responses->insert_last(this->responses, (void*)listed_response);
-			pthread_mutex_unlock(&(this->mutex));
-			/* signal ALL waiting threads */
-			pthread_cond_broadcast(&(this->condvar));
-		}
-		/* get the next one */
-	}
-}
-
-/**
- * Implementation of kernel_interface_t.destroy.
- */
-static void destroy(private_kernel_interface_t *this)
-{	
-	pthread_cancel(this->thread);
-	pthread_join(this->thread, NULL);
-	close(this->socket);
-	this->responses->destroy(this->responses);
-	free(this);
-}
-
-/*
- * Described in header.
- */
-kernel_interface_t *kernel_interface_create()
-{
-	private_kernel_interface_t *this = malloc_thing(private_kernel_interface_t);
-	
-	/* public functions */
-	this->public.get_spi = (status_t(*)(kernel_interface_t*,host_t*,host_t*,protocol_id_t,u_int32_t,u_int32_t*))get_spi;
-	this->public.add_sa  = (status_t(*)(kernel_interface_t *,host_t*,host_t*,u_int32_t,protocol_id_t,u_int32_t,encryption_algorithm_t,chunk_t,integrity_algorithm_t,chunk_t,bool))add_sa;
-	this->public.add_policy = (status_t(*)(kernel_interface_t*,host_t*, host_t*,host_t*,host_t*,u_int8_t,u_int8_t,int,int,bool,bool,u_int32_t))add_policy;
-	this->public.del_sa = (status_t(*)(kernel_interface_t*,host_t*,u_int32_t,protocol_id_t))del_sa;
-	this->public.del_policy = (status_t(*)(kernel_interface_t*,host_t*,host_t*,host_t*,host_t*,u_int8_t,u_int8_t,int,int))del_policy;
-	
-	this->public.destroy = (void(*)(kernel_interface_t*)) destroy;
-
-	/* private members */
-	this->receive_messages = receive_messages;
-	this->send_message = send_message;
-	this->pid = getpid();
-	this->responses = linked_list_create();
-	this->logger = logger_manager->get_logger(logger_manager, XFRM);
-	pthread_mutex_init(&(this->mutex),NULL);
-	pthread_cond_init(&(this->condvar),NULL);
-	this->seq = 0;
-	this->socket = socket(PF_NETLINK, SOCK_RAW, NETLINK_XFRM);
-	if (this->socket <= 0)
-	{
-		this->responses->destroy(this->responses);
-		free(this);
-		charon->kill(charon, "Unable to create netlink socket");	
-	}
-	
-	if (pthread_create(&(this->thread), NULL, (void*(*)(void*))this->receive_messages, this) != 0)
-	{
-		this->responses->destroy(this->responses);
-		close(this->socket);
-		free(this);
-		charon->kill(charon, "Unable to create netlink thread");
-	}
-	
-	return (&this->public);
-}