1 files changed, 0 insertions, 761 deletions

diff --git a/src/charon/network/socket-raw.c b/src/charon/network/socket-raw.c
deleted file mode 100644
index 6cc0463b2..000000000
--- a/src/charon/network/socket-raw.c
+++ /dev/null
@@ -1,761 +0,0 @@
-/*
- * Copyright (C) 2006 Tobias Brunner, Daniel Roethlisberger
- * Copyright (C) 2005-2008 Martin Willi
- * Copyright (C) 2005 Jan Hutter
- * Hochschule fuer Technik Rapperswil
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * for more details.
- */
-
-/* for struct in6_pktinfo */
-#define _GNU_SOURCE
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <netinet/in.h>
-#include <netinet/ip.h>
-#include <netinet/ip6.h>
-#include <netinet/udp.h>
-#include <linux/types.h>
-#include <linux/filter.h>
-#include <net/if.h>
-
-#include "socket.h"
-
-#include <daemon.h>
-#include <threading/thread.h>
-
-/* constants for packet handling */
-#define IP_LEN sizeof(struct iphdr)
-#define IP6_LEN sizeof(struct ip6_hdr)
-#define UDP_LEN sizeof(struct udphdr)
-#define MARKER_LEN sizeof(u_int32_t)
-
-/* offsets for packet handling */
-#define IP_PROTO_OFFSET 9
-#define IP6_PROTO_OFFSET 6
-#define IKE_VERSION_OFFSET 17
-#define IKE_LENGTH_OFFSET 24
-
-/* from linux/udp.h */
-#ifndef UDP_ENCAP
-#define UDP_ENCAP 100
-#endif /*UDP_ENCAP*/
-
-#ifndef UDP_ENCAP_ESPINUDP
-#define UDP_ENCAP_ESPINUDP 2
-#endif /*UDP_ENCAP_ESPINUDP*/
-
-/* needed for older kernel headers */
-#ifndef IPV6_2292PKTINFO
-#define IPV6_2292PKTINFO 2
-#endif /*IPV6_2292PKTINFO*/
-
-typedef struct private_socket_t private_socket_t;
-
-/**
- * Private data of an socket_t object
- */
-struct private_socket_t{
-	/**
-	 * public functions
-	 */
-	 socket_t public;
-
-	 /**
-	  * regular port
-	  */
-	 int port;
-
-	 /**
-	  * port used for nat-t
-	  */
-	 int natt_port;
-
-	 /**
-	  * raw receiver socket for IPv4
-	  */
-	 int recv4;
-
-	 /**
-	  * raw receiver socket for IPv6
-	  */
-	 int recv6;
-
-	 /**
-	  * send socket on regular port for IPv4
-	  */
-	 int send4;
-
-	 /**
-	  * send socket on regular port for IPv6
-	  */
-	 int send6;
-
-	 /**
-	  * send socket on nat-t port for IPv4
-	  */
-	 int send4_natt;
-
-	 /**
-	  * send socket on nat-t port for IPv6
-	  */
-	 int send6_natt;
-};
-
-/**
- * implementation of socket_t.receive
- */
-static status_t receiver(private_socket_t *this, packet_t **packet)
-{
-	char buffer[MAX_PACKET];
-	chunk_t data;
-	packet_t *pkt;
-	struct udphdr *udp;
-	host_t *source = NULL, *dest = NULL;
-	int bytes_read = 0, data_offset;
-	bool oldstate;
-	fd_set rfds;
-
-	FD_ZERO(&rfds);
-
-	if (this->recv4)
-	{
-		FD_SET(this->recv4, &rfds);
-	}
-	if (this->recv6)
-	{
-		FD_SET(this->recv6, &rfds);
-	}
-
-	DBG2(DBG_NET, "waiting for data on raw sockets");
-
-	oldstate = thread_cancelability(TRUE);
-	if (select(max(this->recv4, this->recv6) + 1, &rfds, NULL, NULL, NULL) <= 0)
-	{
-		thread_cancelability(oldstate);
-		return FAILED;
-	}
-	thread_cancelability(oldstate);
-
-	if (this->recv4 && FD_ISSET(this->recv4, &rfds))
-	{
-		/* IPv4 raw sockets return the IP header. We read src/dest
-		 * information directly from the raw header */
-		struct iphdr *ip;
-		struct sockaddr_in src, dst;
-
-		bytes_read = recv(this->recv4, buffer, MAX_PACKET, 0);
-		if (bytes_read < 0)
-		{
-			DBG1(DBG_NET, "error reading from IPv4 socket: %s", strerror(errno));
-			return FAILED;
-		}
-		DBG3(DBG_NET, "received IPv4 packet %b", buffer, bytes_read);
-
-		/* read source/dest from raw IP/UDP header */
-		if (bytes_read < IP_LEN + UDP_LEN + MARKER_LEN)
-		{
-			DBG1(DBG_NET, "received IPv4 packet too short (%d bytes)",
-				 bytes_read);
-			return FAILED;
-		}
-		ip = (struct iphdr*) buffer;
-		udp = (struct udphdr*) (buffer + IP_LEN);
-		src.sin_family = AF_INET;
-		src.sin_addr.s_addr = ip->saddr;
-		src.sin_port = udp->source;
-		dst.sin_family = AF_INET;
-		dst.sin_addr.s_addr = ip->daddr;
-		dst.sin_port = udp->dest;
-		source = host_create_from_sockaddr((sockaddr_t*)&src);
-		dest = host_create_from_sockaddr((sockaddr_t*)&dst);
-
-		pkt = packet_create();
-		pkt->set_source(pkt, source);
-		pkt->set_destination(pkt, dest);
-		DBG2(DBG_NET, "received packet: from %#H to %#H", source, dest);
-		data_offset = IP_LEN + UDP_LEN;
-		/* remove non esp marker */
-		if (dest->get_port(dest) == IKEV2_NATT_PORT)
-		{
-			data_offset += MARKER_LEN;
-		}
-		/* fill in packet */
-		data.len = bytes_read - data_offset;
-		data.ptr = malloc(data.len);
-		memcpy(data.ptr, buffer + data_offset, data.len);
-		pkt->set_data(pkt, data);
-	}
-	else if (this->recv6 && FD_ISSET(this->recv6, &rfds))
-	{
-		/* IPv6 raw sockets return no IP header. We must query
-		 * src/dest via socket options/ancillary data */
-		struct msghdr msg;
-		struct cmsghdr *cmsgptr;
-		struct sockaddr_in6 src, dst;
-		struct iovec iov;
-		char ancillary[64];
-
-		msg.msg_name = &src;
-		msg.msg_namelen = sizeof(src);
-		iov.iov_base = buffer;
-		iov.iov_len = sizeof(buffer);
-		msg.msg_iov = &iov;
-		msg.msg_iovlen = 1;
-		msg.msg_control = ancillary;
-		msg.msg_controllen = sizeof(ancillary);
-		msg.msg_flags = 0;
-
-		bytes_read = recvmsg(this->recv6, &msg, 0);
-		if (bytes_read < 0)
-		{
-			DBG1(DBG_NET, "error reading from IPv6 socket: %s", strerror(errno));
-			return FAILED;
-		}
-		DBG3(DBG_NET, "received IPv6 packet %b", buffer, bytes_read);
-
-		if (bytes_read < IP_LEN + UDP_LEN + MARKER_LEN)
-		{
-			DBG3(DBG_NET, "received IPv6 packet too short (%d bytes)",
-				 bytes_read);
-			return FAILED;
-		}
-
-		/* read ancillary data to get destination address */
-		for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL;
-			 cmsgptr = CMSG_NXTHDR(&msg, cmsgptr))
-		{
-			if (cmsgptr->cmsg_len == 0)
-			{
-				DBG1(DBG_NET, "error reading IPv6 ancillary data");
-				return FAILED;
-			}
-			if (cmsgptr->cmsg_level == SOL_IPV6 &&
-				cmsgptr->cmsg_type == IPV6_2292PKTINFO)
-			{
-				struct in6_pktinfo *pktinfo;
-				pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsgptr);
-
-				memset(&dst, 0, sizeof(dst));
-				memcpy(&dst.sin6_addr, &pktinfo->ipi6_addr, sizeof(dst.sin6_addr));
-				dst.sin6_family = AF_INET6;
-				udp = (struct udphdr*) (buffer);
-				dst.sin6_port = udp->dest;
-				src.sin6_port = udp->source;
-				dest = host_create_from_sockaddr((sockaddr_t*)&dst);
-			}
-		}
-		/* ancillary data missing? */
-		if (dest == NULL)
-		{
-			DBG1(DBG_NET, "error reading IPv6 packet header");
-			return FAILED;
-		}
-
-		source = host_create_from_sockaddr((sockaddr_t*)&src);
-
-		pkt = packet_create();
-		pkt->set_source(pkt, source);
-		pkt->set_destination(pkt, dest);
-		DBG2(DBG_NET, "received packet: from %#H to %#H", source, dest);
-		data_offset = UDP_LEN;
-		/* remove non esp marker */
-		if (dest->get_port(dest) == IKEV2_NATT_PORT)
-		{
-			data_offset += MARKER_LEN;
-		}
-		/* fill in packet */
-		data.len = bytes_read - data_offset;
-		data.ptr = malloc(data.len);
-		memcpy(data.ptr, buffer + data_offset, data.len);
-		pkt->set_data(pkt, data);
-	}
-	else
-	{
-		/* oops, shouldn't happen */
-		return FAILED;
-	}
-
-	/* return packet */
-	*packet = pkt;
-	return SUCCESS;
-}
-
-/**
- * implementation of socket_t.send
- */
-status_t sender(private_socket_t *this, packet_t *packet)
-{
-	int sport, skt, family;
-	ssize_t bytes_sent;
-	chunk_t data, marked;
-	host_t *src, *dst;
-	struct msghdr msg;
-	struct cmsghdr *cmsg;
-	struct iovec iov;
-
-	src = packet->get_source(packet);
-	dst = packet->get_destination(packet);
-	data = packet->get_data(packet);
-
-	DBG2(DBG_NET, "sending packet: from %#H to %#H", src, dst);
-
-	/* send data */
-	sport = src->get_port(src);
-	family = dst->get_family(dst);
-	if (sport == IKEV2_UDP_PORT)
-	{
-		if (family == AF_INET)
-		{
-			skt = this->send4;
-		}
-		else
-		{
-			skt = this->send6;
-		}
-	}
-	else if (sport == IKEV2_NATT_PORT)
-	{
-		if (family == AF_INET)
-		{
-			skt = this->send4_natt;
-		}
-		else
-		{
-			skt = this->send6_natt;
-		}
-		/* NAT keepalives without marker */
-		if (data.len != 1 || data.ptr[0] != 0xFF)
-		{
-			/* add non esp marker to packet */
-			if (data.len > MAX_PACKET - MARKER_LEN)
-			{
-				DBG1(DBG_NET, "unable to send packet: it's too big (%d bytes)",
-					 data.len);
-				return FAILED;
-			}
-			marked = chunk_alloc(data.len + MARKER_LEN);
-			memset(marked.ptr, 0, MARKER_LEN);
-			memcpy(marked.ptr + MARKER_LEN, data.ptr, data.len);
-			/* let the packet do the clean up for us */
-			packet->set_data(packet, marked);
-			data = marked;
-		}
-	}
-	else
-	{
-		DBG1(DBG_NET, "unable to locate a send socket for port %d", sport);
-		return FAILED;
-	}
-
-	memset(&msg, 0, sizeof(struct msghdr));
-	msg.msg_name = dst->get_sockaddr(dst);;
-	msg.msg_namelen = *dst->get_sockaddr_len(dst);
-	iov.iov_base = data.ptr;
-	iov.iov_len = data.len;
-	msg.msg_iov = &iov;
-	msg.msg_iovlen = 1;
-	msg.msg_flags = 0;
-
-	if (!src->is_anyaddr(src))
-	{
-		if (family == AF_INET)
-		{
-			char buf[CMSG_SPACE(sizeof(struct in_pktinfo))];
-			struct in_pktinfo *pktinfo;
-			struct sockaddr_in *sin;
-
-			msg.msg_control = buf;
-			msg.msg_controllen = sizeof(buf);
-			cmsg = CMSG_FIRSTHDR(&msg);
-			cmsg->cmsg_level = SOL_IP;
-			cmsg->cmsg_type = IP_PKTINFO;
-			cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo));
-			pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsg);
-			memset(pktinfo, 0, sizeof(struct in_pktinfo));
-			sin = (struct sockaddr_in*)src->get_sockaddr(src);
-			memcpy(&pktinfo->ipi_spec_dst, &sin->sin_addr, sizeof(struct in_addr));
-		}
-		else
-		{
-			char buf[CMSG_SPACE(sizeof(struct in6_pktinfo))];
-			struct in6_pktinfo *pktinfo;
-			struct sockaddr_in6 *sin;
-
-			msg.msg_control = buf;
-			msg.msg_controllen = sizeof(buf);
-			cmsg = CMSG_FIRSTHDR(&msg);
-			cmsg->cmsg_level = SOL_IPV6;
-			cmsg->cmsg_type = IPV6_2292PKTINFO;
-			cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
-			pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsg);
-			memset(pktinfo, 0, sizeof(struct in6_pktinfo));
-			sin = (struct sockaddr_in6*)src->get_sockaddr(src);
-			memcpy(&pktinfo->ipi6_addr, &sin->sin6_addr, sizeof(struct in6_addr));
-		}
-	}
-
-	bytes_sent = sendmsg(skt, &msg, 0);
-
-	if (bytes_sent != data.len)
-	{
-		DBG1(DBG_NET, "error writing to socket: %s", strerror(errno));
-		return FAILED;
-	}
-	return SUCCESS;
-}
-
-/**
- * open a socket to send packets
- */
-static int open_send_socket(private_socket_t *this, int family, u_int16_t port)
-{
-	int on = TRUE;
-	int type = UDP_ENCAP_ESPINUDP;
-	struct sockaddr_storage addr;
-	u_int sol;
-	int skt;
-
-	memset(&addr, 0, sizeof(addr));
-	/* precalculate constants depending on address family */
-	switch (family)
-	{
-		case AF_INET:
-		{
-			struct sockaddr_in *sin = (struct sockaddr_in *)&addr;
-			sin->sin_family = AF_INET;
-			sin->sin_addr.s_addr = INADDR_ANY;
-			sin->sin_port = htons(port);
-			sol = SOL_IP;
-			break;
-		}
-		case AF_INET6:
-		{
-			struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&addr;
-			sin6->sin6_family = AF_INET6;
-			memcpy(&sin6->sin6_addr, &in6addr_any, sizeof(in6addr_any));
-			sin6->sin6_port = htons(port);
-			sol = SOL_IPV6;
-			break;
-		}
-		default:
-			return 0;
-	}
-
-	skt = socket(family, SOCK_DGRAM, IPPROTO_UDP);
-	if (skt < 0)
-	{
-		DBG1(DBG_NET, "could not open send socket: %s", strerror(errno));
-		return 0;
-	}
-
-	if (setsockopt(skt, SOL_SOCKET, SO_REUSEADDR, (void*)&on, sizeof(on)) < 0)
-	{
-		DBG1(DBG_NET, "unable to set SO_REUSEADDR on send socket: %s",
-			 strerror(errno));
-		close(skt);
-		return 0;
-	}
-
-	/* bind the send socket */
-	if (bind(skt, (struct sockaddr *)&addr, sizeof(addr)) < 0)
-	{
-		DBG1(DBG_NET, "unable to bind send socket: %s",
-			 strerror(errno));
-		close(skt);
-		return 0;
-	}
-
-	if (family == AF_INET)
-	{
-		/* enable UDP decapsulation globally, only for one socket needed */
-		if (setsockopt(skt, SOL_UDP, UDP_ENCAP, &type, sizeof(type)) < 0)
-		{
-			DBG1(DBG_NET, "unable to set UDP_ENCAP: %s; NAT-T may fail",
-				 strerror(errno));
-		}
-	}
-
-	return skt;
-}
-
-/**
- * open a socket to receive packets
- */
-static int open_recv_socket(private_socket_t *this, int family)
-{
-	int skt;
-	int on = TRUE;
-	u_int proto_offset, ip_len, sol, udp_header, ike_header;
-
-	/* precalculate constants depending on address family */
-	switch (family)
-	{
-		case AF_INET:
-			proto_offset = IP_PROTO_OFFSET;
-			ip_len = IP_LEN;
-			sol = SOL_IP;
-			break;
-		case AF_INET6:
-			proto_offset = IP6_PROTO_OFFSET;
-			ip_len = 0; /* IPv6 raw sockets contain no IP header */
-			sol = SOL_IPV6;
-			break;
-		default:
-			return 0;
-	}
-	udp_header = ip_len;
-	ike_header = ip_len + UDP_LEN;
-
-	/* This filter code filters out all non-IKEv2 traffic on
-	 * a SOCK_RAW IP_PROTP_UDP socket. Handling of other
-	 * IKE versions is done in pluto.
-	 */
-	struct sock_filter ikev2_filter_code[] =
-	{
-		/* Destination Port must be either port or natt_port */
-		BPF_STMT(BPF_LD+BPF_H+BPF_ABS, udp_header + 2),
-		BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, IKEV2_UDP_PORT, 1, 0),
-		BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, IKEV2_NATT_PORT, 5, 12),
-		/* port */
-			/* IKE version must be 2.0 */
-			BPF_STMT(BPF_LD+BPF_B+BPF_ABS, ike_header + IKE_VERSION_OFFSET),
-			BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x20, 0, 10),
-			/* packet length is length in IKEv2 header + ip header + udp header */
-			BPF_STMT(BPF_LD+BPF_W+BPF_ABS, ike_header + IKE_LENGTH_OFFSET),
-			BPF_STMT(BPF_ALU+BPF_ADD+BPF_K, ip_len + UDP_LEN),
-			BPF_STMT(BPF_RET+BPF_A, 0),
-		/* natt_port */
-			/* nat-t: check for marker */
-			BPF_STMT(BPF_LD+BPF_W+BPF_ABS, ike_header),
-			BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0, 0, 5),
-			/* nat-t: IKE version must be 2.0 */
-			BPF_STMT(BPF_LD+BPF_B+BPF_ABS, ike_header + MARKER_LEN + IKE_VERSION_OFFSET),
-			BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x20, 0, 3),
-			/* nat-t: packet length is length in IKEv2 header + ip header + udp header + non esp marker */
-			BPF_STMT(BPF_LD+BPF_W+BPF_ABS, ike_header + MARKER_LEN + IKE_LENGTH_OFFSET),
-			BPF_STMT(BPF_ALU+BPF_ADD+BPF_K, ip_len + UDP_LEN + MARKER_LEN),
-			BPF_STMT(BPF_RET+BPF_A, 0),
-		/* packet doesn't match, ignore */
-		BPF_STMT(BPF_RET+BPF_K, 0),
-	};
-
-	/* Filter struct to use with setsockopt */
-	struct sock_fprog ikev2_filter = {
-		sizeof(ikev2_filter_code) / sizeof(struct sock_filter),
-		ikev2_filter_code
-	};
-
-	/* set up a raw socket */
-	skt = socket(family, SOCK_RAW, IPPROTO_UDP);
-	if (skt < 0)
-	{
-		DBG1(DBG_NET, "unable to create raw socket: %s", strerror(errno));
-		return 0;
-	}
-
-	if (setsockopt(skt, SOL_SOCKET, SO_ATTACH_FILTER,
-				   &ikev2_filter, sizeof(ikev2_filter)) < 0)
-	{
-		DBG1(DBG_NET, "unable to attach IKEv2 filter to raw socket: %s",
-			 strerror(errno));
-		close(skt);
-		return 0;
-	}
-
-	if (family == AF_INET6 &&
-		/* we use IPV6_2292PKTINFO, as IPV6_PKTINFO is defined as
-		 * 2 or 50 depending on kernel header version */
-		setsockopt(skt, sol, IPV6_2292PKTINFO, &on, sizeof(on)) < 0)
-	{
-		DBG1(DBG_NET, "unable to set IPV6_PKTINFO on raw socket: %s",
-			 strerror(errno));
-		close(skt);
-		return 0;
-	}
-
-	return skt;
-}
-
-/**
- * enumerator for underlying sockets
- */
-typedef struct {
-	/** implements enumerator_t */
-	enumerator_t public;
-	/** sockets we enumerate */
-	private_socket_t *socket;
-	/** counter */
-	int index;
-} socket_enumerator_t;
-
-/**
- * enumerate function for socket_enumerator_t
- */
-static bool enumerate(socket_enumerator_t *this, int *fd, int *family, int *port)
-{
-	static const struct {
-		int fd_offset;
-		int family;
-		int port;
-	} sockets[] = {
-		{ offsetof(private_socket_t, recv4), AF_INET, IKEV2_UDP_PORT },
-		{ offsetof(private_socket_t, recv6), AF_INET6, IKEV2_UDP_PORT },
-		{ offsetof(private_socket_t, send4), AF_INET, IKEV2_UDP_PORT },
-		{ offsetof(private_socket_t, send6), AF_INET6, IKEV2_UDP_PORT },
-		{ offsetof(private_socket_t, send4_natt), AF_INET, IKEV2_NATT_PORT },
-		{ offsetof(private_socket_t, send6_natt), AF_INET6, IKEV2_NATT_PORT }
-	};
-
-	while(++this->index < countof(sockets))
-	{
-		int sock = *(int*)((char*)this->socket + sockets[this->index].fd_offset);
-		if (!sock)
-		{
-			continue;
-		}
-		*fd = sock;
-		*family = sockets[this->index].family;
-		*port = sockets[this->index].port;
-		return TRUE;
-	}
-	return FALSE;
-}
-
-/**
- * implementation of socket_t.create_enumerator
- */
-static enumerator_t *create_enumerator(private_socket_t *this)
-{
-	socket_enumerator_t *enumerator;
-
-	enumerator = malloc_thing(socket_enumerator_t);
-	enumerator->index = -1;
-	enumerator->socket = this;
-	enumerator->public.enumerate = (void*)enumerate;
-	enumerator->public.destroy = (void*)free;
-	return &enumerator->public;
-}
-
-/**
- * implementation of socket_t.destroy
- */
-static void destroy(private_socket_t *this)
-{
-	if (this->recv4)
-	{
-		close(this->recv4);
-	}
-	if (this->recv6)
-	{
-		close(this->recv6);
-	}
-	if (this->send4)
-	{
-		close(this->send4);
-	}
-	if (this->send6)
-	{
-		close(this->send6);
-	}
-	if (this->send4_natt)
-	{
-		close(this->send4_natt);
-	}
-	if (this->send6_natt)
-	{
-		close(this->send6_natt);
-	}
-	free(this);
-}
-
-/*
- * See header for description
- */
-socket_t *socket_create()
-{
-	private_socket_t *this = malloc_thing(private_socket_t);
-
-	/* public functions */
-	this->public.send = (status_t(*)(socket_t*, packet_t*))sender;
-	this->public.receive = (status_t(*)(socket_t*, packet_t**))receiver;
-	this->public.create_enumerator = (enumerator_t*(*)(socket_t*))create_enumerator;
-	this->public.destroy = (void(*)(socket_t*)) destroy;
-
-	this->recv4 = 0;
-	this->recv6 = 0;
-	this->send4 = 0;
-	this->send6 = 0;
-	this->send4_natt = 0;
-	this->send6_natt = 0;
-
-	this->recv4 = open_recv_socket(this, AF_INET);
-	if (this->recv4 == 0)
-	{
-		DBG1(DBG_NET, "could not open IPv4 receive socket, IPv4 disabled");
-	}
-	else
-	{
-		this->send4 = open_send_socket(this, AF_INET, IKEV2_UDP_PORT);
-		if (this->send4 == 0)
-		{
-			DBG1(DBG_NET, "could not open IPv4 send socket, IPv4 disabled");
-			close(this->recv4);
-		}
-		else
-		{
-			this->send4_natt = open_send_socket(this, AF_INET, IKEV2_NATT_PORT);
-			if (this->send4_natt == 0)
-			{
-				DBG1(DBG_NET, "could not open IPv4 NAT-T send socket");
-			}
-		}
-	}
-
-	this->recv6 = open_recv_socket(this, AF_INET6);
-	if (this->recv6 == 0)
-	{
-		DBG1(DBG_NET, "could not open IPv6 receive socket, IPv6 disabled");
-	}
-	else
-	{
-		this->send6 = open_send_socket(this, AF_INET6, IKEV2_UDP_PORT);
-		if (this->send6 == 0)
-		{
-			DBG1(DBG_NET, "could not open IPv6 send socket, IPv6 disabled");
-			close(this->recv6);
-		}
-		else
-		{
-			this->send6_natt = open_send_socket(this, AF_INET6, IKEV2_NATT_PORT);
-			if (this->send6_natt == 0)
-			{
-				DBG1(DBG_NET, "could not open IPv6 NAT-T send socket");
-			}
-		}
-	}
-
-	if (!(this->send4 || this->send6) || !(this->recv4 || this->recv6))
-	{
-		DBG1(DBG_NET, "could not create any sockets");
-		destroy(this);
-		charon->kill(charon, "socket initialization failed");
-	}
-
-	return (socket_t*)this;
-}