Removed the unneeded socket-raw plugin

1 files changed, 0 insertions, 687 deletions

diff --git a/src/libcharon/plugins/socket_raw/socket_raw_socket.c b/src/libcharon/plugins/socket_raw/socket_raw_socket.c
deleted file mode 100644
index e6d1e4d2f..000000000
--- a/src/libcharon/plugins/socket_raw/socket_raw_socket.c
+++ /dev/null
@@ -1,687 +0,0 @@
-/*
- * Copyright (C) 2006-2012 Tobias Brunner
- * Copyright (C) 2005-2010 Martin Willi
- * Copyright (C) 2006 Daniel Roethlisberger
- * 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 "socket_raw_socket.h"
-
-#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/udp.h>
-#include <linux/types.h>
-#include <linux/filter.h>
-#include <net/if.h>
-
-#include <hydra.h>
-#include <daemon.h>
-#include <threading/thread.h>
-
-/* Maximum size of a packet */
-#define MAX_PACKET 10000
-
-/* 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
-
-/* needed for older kernel headers */
-#ifndef IPV6_2292PKTINFO
-#define IPV6_2292PKTINFO 2
-#endif /*IPV6_2292PKTINFO*/
-
-typedef struct private_socket_raw_socket_t private_socket_raw_socket_t;
-
-/**
- * Private data of an socket_t object
- */
-struct private_socket_raw_socket_t {
-
-	/**
-	 * public functions
-	 */
-	 socket_raw_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;
-
-	/**
-	 * Maximum packet size to receive
-	 */
-	int max_packet;
-};
-
-METHOD(socket_t, receiver, status_t,
-	private_socket_raw_socket_t *this, packet_t **packet)
-{
-	char buffer[this->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, this->max_packet, 0);
-		if (bytes_read < 0)
-		{
-			DBG1(DBG_NET, "error reading from IPv4 socket: %s", strerror(errno));
-			return FAILED;
-		}
-		if (bytes_read == this->max_packet)
-		{
-			DBG1(DBG_NET, "receive buffer too small, packet discarded");
-			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)
-		{
-			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;
-		data.len = bytes_read - data_offset;
-		data.ptr = buffer + data_offset;
-		pkt->set_data(pkt, chunk_clone(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 = this->max_packet;
-		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)
-		{
-			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;
-			}
-
-#ifdef HAVE_IN6_PKTINFO
-			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);
-			}
-#endif /* HAVE_IN6_PKTINFO */
-		}
-		/* 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;
-		data.len = bytes_read - data_offset;
-		data.ptr = buffer + data_offset;
-		pkt->set_data(pkt, chunk_clone(data));
-	}
-	else
-	{
-		/* oops, shouldn't happen */
-		return FAILED;
-	}
-
-	/* return packet */
-	*packet = pkt;
-	return SUCCESS;
-}
-
-METHOD(socket_t, sender, status_t,
-	private_socket_raw_socket_t *this, packet_t *packet)
-{
-	int sport, skt, family;
-	ssize_t bytes_sent;
-	chunk_t data;
-	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 == 0 || sport == CHARON_UDP_PORT)
-	{
-		if (family == AF_INET)
-		{
-			skt = this->send4;
-		}
-		else
-		{
-			skt = this->send6;
-		}
-	}
-	else if (sport == CHARON_NATT_PORT)
-	{
-		if (family == AF_INET)
-		{
-			skt = this->send4_natt;
-		}
-		else
-		{
-			skt = this->send6_natt;
-		}
-	}
-	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));
-		}
-#ifdef HAVE_IN6_PKTINFO
-		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));
-		}
-#endif /* HAVE_IN6_PKTINFO */
-	}
-
-	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_raw_socket_t *this,
-							int family, u_int16_t port)
-{
-	int on = TRUE;
-	struct sockaddr_storage addr;
-	int skt;
-
-	memset(&addr, 0, sizeof(addr));
-	addr.ss_family = family;
-	/* precalculate constants depending on address family */
-	switch (family)
-	{
-		case AF_INET:
-		{
-			struct sockaddr_in *sin = (struct sockaddr_in *)&addr;
-			htoun32(&sin->sin_addr.s_addr, INADDR_ANY);
-			htoun16(&sin->sin_port, port);
-			break;
-		}
-		case AF_INET6:
-		{
-			struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&addr;
-			memcpy(&sin6->sin6_addr, &in6addr_any, sizeof(in6addr_any));
-			htoun16(&sin6->sin6_port, port);
-			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 (!hydra->kernel_interface->bypass_socket(hydra->kernel_interface,
-												skt, family))
-	{
-		DBG1(DBG_NET, "installing bypass policy on send socket failed");
-	}
-
-	/* enable UDP decapsulation for NAT-T sockets */
-	if (port == CHARON_NATT_PORT &&
-		!hydra->kernel_interface->enable_udp_decap(hydra->kernel_interface,
-												   skt, family, port))
-	{
-		DBG1(DBG_NET, "enabling UDP decapsulation failed");
-	}
-
-	return skt;
-}
-
-METHOD(socket_t, get_port, u_int16_t,
-	private_socket_raw_socket_t *this, bool nat_t)
-{
-	return nat_t ? CHARON_NATT_PORT : CHARON_UDP_PORT;
-}
-
-/**
- * open a socket to receive packets
- */
-static int open_recv_socket(private_socket_raw_socket_t *this, int family)
-{
-	int skt;
-	int on = TRUE;
-	u_int ip_len, sol, udp_header, ike_header;
-
-	/* precalculate constants depending on address family */
-	switch (family)
-	{
-		case AF_INET:
-			ip_len = IP_LEN;
-			sol = SOL_IP;
-			break;
-		case AF_INET6:
-			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, CHARON_UDP_PORT, 1, 0),
-		BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, CHARON_NATT_PORT, 6, 14),
-		/* port */
-			/* IKE version must be 2.x */
-			BPF_STMT(BPF_LD+BPF_B+BPF_ABS, ike_header + IKE_VERSION_OFFSET),
-			BPF_STMT(BPF_ALU+BPF_RSH+BPF_K, 4),
-			BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 2, 0, 11),
-			/* 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, 6),
-			/* nat-t: IKE version must be 2.x */
-			BPF_STMT(BPF_LD+BPF_B+BPF_ABS, ike_header + MARKER_LEN + IKE_VERSION_OFFSET),
-			BPF_STMT(BPF_ALU+BPF_RSH+BPF_K, 4),
-			BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 2, 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;
-	}
-
-	if (!hydra->kernel_interface->bypass_socket(hydra->kernel_interface,
-												skt, family))
-	{
-		DBG1(DBG_NET, "installing bypass policy on receive socket failed");
-	}
-
-	return skt;
-}
-
-METHOD(socket_t, destroy, void,
-	private_socket_raw_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_raw_socket_t *socket_raw_socket_create()
-{
-	private_socket_raw_socket_t *this;
-
-	INIT(this,
-		.public = {
-			.socket = {
-				.send = _sender,
-				.receive = _receiver,
-				.get_port = _get_port,
-				.destroy = _destroy,
-			},
-		},
-		.max_packet = lib->settings->get_int(lib->settings,
-									"%s.max_packet", MAX_PACKET, charon->name),
-	);
-
-	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, CHARON_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, CHARON_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, CHARON_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, CHARON_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);
-		return NULL;
-	}
-
-	return &this->public;
-}