787 lines
18 KiB
C
787 lines
18 KiB
C
/*
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* Copyright (C) 2006-2013 Tobias Brunner
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* Copyright (C) 2006 Daniel Roethlisberger
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* Copyright (C) 2005-2010 Martin Willi
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* Copyright (C) 2005 Jan Hutter
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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/* for struct in6_pktinfo */
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#define _GNU_SOURCE
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#ifdef __sun
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#define _XPG4_2
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#define __EXTENSIONS__
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#endif
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/* make sure to use the proper defs on Mac OS X */
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#define __APPLE_USE_RFC_3542
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#include "socket_default_socket.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <netinet/in_systm.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/udp.h>
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#include <net/if.h>
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#include <hydra.h>
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#include <daemon.h>
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#include <threading/thread.h>
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/* Maximum size of a packet */
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#define MAX_PACKET 10000
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/* these are not defined on some platforms */
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#ifndef SOL_IP
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#define SOL_IP IPPROTO_IP
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#endif
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#ifndef SOL_IPV6
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#define SOL_IPV6 IPPROTO_IPV6
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#endif
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#ifndef IPV6_TCLASS
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#define IPV6_TCLASS 67
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#endif
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/* IPV6_RECVPKTINFO is defined in RFC 3542 which obsoletes RFC 2292 that
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* previously defined IPV6_PKTINFO */
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#ifndef IPV6_RECVPKTINFO
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#define IPV6_RECVPKTINFO IPV6_PKTINFO
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#endif
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#ifndef IN6ADDR_ANY_INIT
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#define IN6ADDR_ANY_INIT {{{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}}
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#endif
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#ifndef HAVE_IN6ADDR_ANY
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static const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
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#endif
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typedef struct private_socket_default_socket_t private_socket_default_socket_t;
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/**
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* Private data of an socket_t object
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*/
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struct private_socket_default_socket_t {
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/**
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* public functions
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*/
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socket_default_socket_t public;
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/**
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* Configured port (or random, if initially 0)
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*/
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u_int16_t port;
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/**
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* Configured port for NAT-T (or random, if initially 0)
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*/
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u_int16_t natt;
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/**
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* IPv4 socket (500 or port)
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*/
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int ipv4;
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/**
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* IPv4 socket for NAT-T (4500 or natt)
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*/
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int ipv4_natt;
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/**
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* IPv6 socket (500 or port)
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*/
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int ipv6;
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/**
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* IPv6 socket for NAT-T (4500 or natt)
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*/
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int ipv6_natt;
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/**
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* DSCP value set on IPv4 socket
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*/
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u_int8_t dscp4;
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/**
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* DSCP value set on IPv4 socket for NAT-T (4500 or natt)
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*/
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u_int8_t dscp4_natt;
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/**
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* DSCP value set on IPv6 socket (500 or port)
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*/
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u_int8_t dscp6;
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/**
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* DSCP value set on IPv6 socket for NAT-T (4500 or natt)
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*/
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u_int8_t dscp6_natt;
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/**
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* Maximum packet size to receive
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*/
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int max_packet;
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/**
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* TRUE if the source address should be set on outbound packets
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*/
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bool set_source;
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};
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METHOD(socket_t, receiver, status_t,
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private_socket_default_socket_t *this, packet_t **packet)
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{
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char buffer[this->max_packet];
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chunk_t data;
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packet_t *pkt;
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host_t *source = NULL, *dest = NULL;
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int bytes_read = 0;
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bool oldstate;
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fd_set rfds;
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int max_fd = 0, selected = 0;
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u_int16_t port = 0;
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FD_ZERO(&rfds);
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if (this->ipv4 != -1)
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{
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FD_SET(this->ipv4, &rfds);
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max_fd = max(max_fd, this->ipv4);
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}
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if (this->ipv4_natt != -1)
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{
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FD_SET(this->ipv4_natt, &rfds);
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max_fd = max(max_fd, this->ipv4_natt);
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}
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if (this->ipv6 != -1)
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{
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FD_SET(this->ipv6, &rfds);
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max_fd = max(max_fd, this->ipv6);
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}
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if (this->ipv6_natt != -1)
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{
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FD_SET(this->ipv6_natt, &rfds);
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max_fd = max(max_fd, this->ipv6_natt);
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}
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DBG2(DBG_NET, "waiting for data on sockets");
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oldstate = thread_cancelability(TRUE);
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if (select(max_fd + 1, &rfds, NULL, NULL, NULL) <= 0)
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{
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thread_cancelability(oldstate);
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return FAILED;
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}
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thread_cancelability(oldstate);
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if (this->ipv4 != -1 && FD_ISSET(this->ipv4, &rfds))
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{
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port = this->port;
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selected = this->ipv4;
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}
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if (this->ipv4_natt != -1 && FD_ISSET(this->ipv4_natt, &rfds))
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{
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port = this->natt;
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selected = this->ipv4_natt;
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}
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if (this->ipv6 != -1 && FD_ISSET(this->ipv6, &rfds))
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{
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port = this->port;
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selected = this->ipv6;
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}
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if (this->ipv6_natt != -1 && FD_ISSET(this->ipv6_natt, &rfds))
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{
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port = this->natt;
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selected = this->ipv6_natt;
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}
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if (selected)
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{
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struct msghdr msg;
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struct cmsghdr *cmsgptr;
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struct iovec iov;
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char ancillary[64];
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union {
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struct sockaddr_in in4;
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struct sockaddr_in6 in6;
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} src;
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msg.msg_name = &src;
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msg.msg_namelen = sizeof(src);
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iov.iov_base = buffer;
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iov.iov_len = this->max_packet;
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msg.msg_iov = &iov;
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msg.msg_iovlen = 1;
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msg.msg_control = ancillary;
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msg.msg_controllen = sizeof(ancillary);
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msg.msg_flags = 0;
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bytes_read = recvmsg(selected, &msg, 0);
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if (bytes_read < 0)
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{
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DBG1(DBG_NET, "error reading socket: %s", strerror(errno));
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return FAILED;
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}
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if (msg.msg_flags & MSG_TRUNC)
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{
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DBG1(DBG_NET, "receive buffer too small, packet discarded");
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return FAILED;
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}
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DBG3(DBG_NET, "received packet %b", buffer, bytes_read);
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/* read ancillary data to get destination address */
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for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL;
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cmsgptr = CMSG_NXTHDR(&msg, cmsgptr))
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{
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if (cmsgptr->cmsg_len == 0)
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{
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DBG1(DBG_NET, "error reading ancillary data");
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return FAILED;
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}
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#ifdef HAVE_IN6_PKTINFO
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if (cmsgptr->cmsg_level == SOL_IPV6 &&
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cmsgptr->cmsg_type == IPV6_PKTINFO)
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{
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struct in6_pktinfo *pktinfo;
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pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsgptr);
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struct sockaddr_in6 dst;
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memset(&dst, 0, sizeof(dst));
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memcpy(&dst.sin6_addr, &pktinfo->ipi6_addr, sizeof(dst.sin6_addr));
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dst.sin6_family = AF_INET6;
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dst.sin6_port = htons(port);
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dest = host_create_from_sockaddr((sockaddr_t*)&dst);
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}
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#endif /* HAVE_IN6_PKTINFO */
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if (cmsgptr->cmsg_level == SOL_IP &&
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#ifdef IP_PKTINFO
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cmsgptr->cmsg_type == IP_PKTINFO
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#elif defined(IP_RECVDSTADDR)
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cmsgptr->cmsg_type == IP_RECVDSTADDR
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#else
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FALSE
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#endif
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)
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{
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struct in_addr *addr;
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struct sockaddr_in dst;
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#ifdef IP_PKTINFO
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struct in_pktinfo *pktinfo;
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pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsgptr);
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addr = &pktinfo->ipi_addr;
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#elif defined(IP_RECVDSTADDR)
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addr = (struct in_addr*)CMSG_DATA(cmsgptr);
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#endif
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memset(&dst, 0, sizeof(dst));
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memcpy(&dst.sin_addr, addr, sizeof(dst.sin_addr));
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dst.sin_family = AF_INET;
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dst.sin_port = htons(port);
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dest = host_create_from_sockaddr((sockaddr_t*)&dst);
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}
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if (dest)
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{
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break;
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}
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}
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if (dest == NULL)
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{
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DBG1(DBG_NET, "error reading IP header");
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return FAILED;
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}
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source = host_create_from_sockaddr((sockaddr_t*)&src);
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pkt = packet_create();
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pkt->set_source(pkt, source);
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pkt->set_destination(pkt, dest);
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DBG2(DBG_NET, "received packet: from %#H to %#H", source, dest);
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data = chunk_create(buffer, bytes_read);
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pkt->set_data(pkt, chunk_clone(data));
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}
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else
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{
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/* oops, shouldn't happen */
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return FAILED;
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}
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/* return packet */
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*packet = pkt;
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return SUCCESS;
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}
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METHOD(socket_t, sender, status_t,
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private_socket_default_socket_t *this, packet_t *packet)
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{
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int sport, skt = -1, family;
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ssize_t bytes_sent;
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chunk_t data;
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host_t *src, *dst;
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struct msghdr msg;
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struct cmsghdr *cmsg;
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struct iovec iov;
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u_int8_t *dscp;
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src = packet->get_source(packet);
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dst = packet->get_destination(packet);
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data = packet->get_data(packet);
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DBG2(DBG_NET, "sending packet: from %#H to %#H", src, dst);
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/* send data */
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sport = src->get_port(src);
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family = dst->get_family(dst);
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if (sport == 0 || sport == this->port)
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{
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switch (family)
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{
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case AF_INET:
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skt = this->ipv4;
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dscp = &this->dscp4;
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break;
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case AF_INET6:
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skt = this->ipv6;
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dscp = &this->dscp6;
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break;
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default:
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return FAILED;
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}
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}
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else if (sport == this->natt)
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{
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switch (family)
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{
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case AF_INET:
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skt = this->ipv4_natt;
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dscp = &this->dscp4_natt;
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break;
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case AF_INET6:
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skt = this->ipv6_natt;
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dscp = &this->dscp6_natt;
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break;
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default:
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return FAILED;
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}
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}
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if (skt == -1)
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{
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DBG1(DBG_NET, "no socket found to send IPv%d packet from port %d",
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family == AF_INET ? 4 : 6, sport);
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return FAILED;
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}
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/* setting DSCP values per-packet in a cmsg seems not to be supported
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* on Linux. We instead setsockopt() before sending it, this should be
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* safe as only a single thread calls send(). */
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if (*dscp != packet->get_dscp(packet))
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{
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if (family == AF_INET)
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{
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u_int8_t ds4;
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ds4 = packet->get_dscp(packet) << 2;
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if (setsockopt(skt, SOL_IP, IP_TOS, &ds4, sizeof(ds4)) == 0)
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{
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*dscp = packet->get_dscp(packet);
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}
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else
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{
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DBG1(DBG_NET, "unable to set IP_TOS on socket: %s",
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strerror(errno));
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}
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}
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else
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{
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u_int ds6;
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ds6 = packet->get_dscp(packet) << 2;
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if (setsockopt(skt, SOL_IPV6, IPV6_TCLASS, &ds6, sizeof(ds6)) == 0)
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{
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*dscp = packet->get_dscp(packet);
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}
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else
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{
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DBG1(DBG_NET, "unable to set IPV6_TCLASS on socket: %s",
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strerror(errno));
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}
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}
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}
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memset(&msg, 0, sizeof(struct msghdr));
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msg.msg_name = dst->get_sockaddr(dst);;
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msg.msg_namelen = *dst->get_sockaddr_len(dst);
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iov.iov_base = data.ptr;
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iov.iov_len = data.len;
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msg.msg_iov = &iov;
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msg.msg_iovlen = 1;
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msg.msg_flags = 0;
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if (this->set_source && !src->is_anyaddr(src))
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{
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if (family == AF_INET)
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{
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#if defined(IP_PKTINFO) || defined(IP_SENDSRCADDR)
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struct in_addr *addr;
|
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struct sockaddr_in *sin;
|
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#ifdef IP_PKTINFO
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char buf[CMSG_SPACE(sizeof(struct in_pktinfo))];
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struct in_pktinfo *pktinfo;
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#elif defined(IP_SENDSRCADDR)
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char buf[CMSG_SPACE(sizeof(struct in_addr))];
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#endif
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memset(buf, 0, sizeof(buf));
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msg.msg_control = buf;
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msg.msg_controllen = sizeof(buf);
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cmsg = CMSG_FIRSTHDR(&msg);
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cmsg->cmsg_level = SOL_IP;
|
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#ifdef IP_PKTINFO
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cmsg->cmsg_type = IP_PKTINFO;
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cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo));
|
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pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsg);
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addr = &pktinfo->ipi_spec_dst;
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#elif defined(IP_SENDSRCADDR)
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cmsg->cmsg_type = IP_SENDSRCADDR;
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cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
|
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addr = (struct in_addr*)CMSG_DATA(cmsg);
|
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#endif
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sin = (struct sockaddr_in*)src->get_sockaddr(src);
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memcpy(addr, &sin->sin_addr, sizeof(struct in_addr));
|
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#endif /* IP_PKTINFO || IP_SENDSRCADDR */
|
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}
|
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#ifdef HAVE_IN6_PKTINFO
|
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else
|
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{
|
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char buf[CMSG_SPACE(sizeof(struct in6_pktinfo))];
|
|
struct in6_pktinfo *pktinfo;
|
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struct sockaddr_in6 *sin;
|
|
|
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memset(buf, 0, sizeof(buf));
|
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msg.msg_control = buf;
|
|
msg.msg_controllen = sizeof(buf);
|
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cmsg = CMSG_FIRSTHDR(&msg);
|
|
cmsg->cmsg_level = SOL_IPV6;
|
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cmsg->cmsg_type = IPV6_PKTINFO;
|
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cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
|
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pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsg);
|
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sin = (struct sockaddr_in6*)src->get_sockaddr(src);
|
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memcpy(&pktinfo->ipi6_addr, &sin->sin6_addr, sizeof(struct in6_addr));
|
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}
|
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#endif /* HAVE_IN6_PKTINFO */
|
|
}
|
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|
|
bytes_sent = sendmsg(skt, &msg, 0);
|
|
|
|
if (bytes_sent != data.len)
|
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{
|
|
DBG1(DBG_NET, "error writing to socket: %s", strerror(errno));
|
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return FAILED;
|
|
}
|
|
return SUCCESS;
|
|
}
|
|
|
|
METHOD(socket_t, get_port, u_int16_t,
|
|
private_socket_default_socket_t *this, bool nat_t)
|
|
{
|
|
return nat_t ? this->natt : this->port;
|
|
}
|
|
|
|
METHOD(socket_t, supported_families, socket_family_t,
|
|
private_socket_default_socket_t *this)
|
|
{
|
|
socket_family_t families = SOCKET_FAMILY_NONE;
|
|
|
|
if (this->ipv4 != -1 || this->ipv4_natt != -1)
|
|
{
|
|
families |= SOCKET_FAMILY_IPV4;
|
|
}
|
|
if (this->ipv6 != -1 || this->ipv6_natt != -1)
|
|
{
|
|
families |= SOCKET_FAMILY_IPV6;
|
|
}
|
|
return families;
|
|
}
|
|
|
|
/**
|
|
* open a socket to send and receive packets
|
|
*/
|
|
static int open_socket(private_socket_default_socket_t *this,
|
|
int family, u_int16_t *port)
|
|
{
|
|
int on = TRUE;
|
|
union {
|
|
struct sockaddr sockaddr;
|
|
struct sockaddr_in sin;
|
|
struct sockaddr_in6 sin6;
|
|
} addr;
|
|
socklen_t addrlen;
|
|
u_int sol, pktinfo = 0;
|
|
int skt;
|
|
|
|
memset(&addr, 0, sizeof(addr));
|
|
addr.sockaddr.sa_family = family;
|
|
/* precalculate constants depending on address family */
|
|
switch (family)
|
|
{
|
|
case AF_INET:
|
|
addr.sin.sin_addr.s_addr = htonl(INADDR_ANY);
|
|
addr.sin.sin_port = htons(*port);
|
|
addrlen = sizeof(addr.sin);
|
|
sol = SOL_IP;
|
|
#ifdef IP_PKTINFO
|
|
pktinfo = IP_PKTINFO;
|
|
#elif defined(IP_RECVDSTADDR)
|
|
pktinfo = IP_RECVDSTADDR;
|
|
#endif
|
|
break;
|
|
case AF_INET6:
|
|
memcpy(&addr.sin6.sin6_addr, &in6addr_any, sizeof(in6addr_any));
|
|
addr.sin6.sin6_port = htons(*port);
|
|
addrlen = sizeof(addr.sin6);
|
|
sol = SOL_IPV6;
|
|
pktinfo = IPV6_RECVPKTINFO;
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
skt = socket(family, SOCK_DGRAM, IPPROTO_UDP);
|
|
if (skt < 0)
|
|
{
|
|
DBG1(DBG_NET, "could not open socket: %s", strerror(errno));
|
|
return -1;
|
|
}
|
|
if (setsockopt(skt, SOL_SOCKET, SO_REUSEADDR, (void*)&on, sizeof(on)) < 0)
|
|
{
|
|
DBG1(DBG_NET, "unable to set SO_REUSEADDR on socket: %s", strerror(errno));
|
|
close(skt);
|
|
return -1;
|
|
}
|
|
|
|
/* bind the socket */
|
|
if (bind(skt, &addr.sockaddr, addrlen) < 0)
|
|
{
|
|
DBG1(DBG_NET, "unable to bind socket: %s", strerror(errno));
|
|
close(skt);
|
|
return -1;
|
|
}
|
|
|
|
/* retrieve randomly allocated port if needed */
|
|
if (*port == 0)
|
|
{
|
|
if (getsockname(skt, &addr.sockaddr, &addrlen) < 0)
|
|
{
|
|
DBG1(DBG_NET, "unable to determine port: %s", strerror(errno));
|
|
close(skt);
|
|
return -1;
|
|
}
|
|
switch (family)
|
|
{
|
|
case AF_INET:
|
|
*port = ntohs(addr.sin.sin_port);
|
|
break;
|
|
case AF_INET6:
|
|
*port = ntohs(addr.sin6.sin6_port);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* get additional packet info on receive */
|
|
if (pktinfo > 0)
|
|
{
|
|
if (setsockopt(skt, sol, pktinfo, &on, sizeof(on)) < 0)
|
|
{
|
|
DBG1(DBG_NET, "unable to set IP_PKTINFO on socket: %s", strerror(errno));
|
|
close(skt);
|
|
return -1;
|
|
}
|
|
}
|
|
#ifdef SO_MARK
|
|
{ /* set optional MARK on socket (requires CAP_NET_ADMIN) */
|
|
char *fwmark;
|
|
mark_t mark;
|
|
|
|
fwmark = lib->settings->get_str(lib->settings,
|
|
"%s.plugins.socket-default.fwmark", NULL, lib->ns);
|
|
if (fwmark && mark_from_string(fwmark, &mark))
|
|
{
|
|
if (setsockopt(skt, SOL_SOCKET, SO_MARK, &mark.value,
|
|
sizeof(mark.value)) < 0)
|
|
{
|
|
DBG1(DBG_NET, "unable to set SO_MARK on socket: %s",
|
|
strerror(errno));
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (!hydra->kernel_interface->bypass_socket(hydra->kernel_interface,
|
|
skt, family))
|
|
{
|
|
DBG1(DBG_NET, "installing IKE bypass policy failed");
|
|
}
|
|
|
|
/* enable UDP decapsulation for NAT-T sockets */
|
|
if (port == &this->natt &&
|
|
!hydra->kernel_interface->enable_udp_decap(hydra->kernel_interface,
|
|
skt, family, this->natt))
|
|
{
|
|
DBG1(DBG_NET, "enabling UDP decapsulation for %s on port %d failed",
|
|
family == AF_INET ? "IPv4" : "IPv6", this->natt);
|
|
}
|
|
|
|
return skt;
|
|
}
|
|
|
|
/**
|
|
* Check if we should use the given family
|
|
*/
|
|
static bool use_family(int family)
|
|
{
|
|
switch (family)
|
|
{
|
|
case AF_INET:
|
|
return lib->settings->get_bool(lib->settings,
|
|
"%s.plugins.socket-default.use_ipv4", TRUE, lib->ns);
|
|
case AF_INET6:
|
|
return lib->settings->get_bool(lib->settings,
|
|
"%s.plugins.socket-default.use_ipv6", TRUE, lib->ns);
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Open a socket pair (normal and NAT traversal) for a given address family
|
|
*/
|
|
static void open_socketpair(private_socket_default_socket_t *this, int family,
|
|
int *skt, int *skt_natt, char *label)
|
|
{
|
|
if (!use_family(family))
|
|
{
|
|
*skt = -1;
|
|
*skt_natt = -1;
|
|
return;
|
|
}
|
|
|
|
*skt = open_socket(this, family, &this->port);
|
|
if (*skt == -1)
|
|
{
|
|
*skt_natt = -1;
|
|
DBG1(DBG_NET, "could not open %s socket, %s disabled", label, label);
|
|
}
|
|
else
|
|
{
|
|
*skt_natt = open_socket(this, family, &this->natt);
|
|
if (*skt_natt == -1)
|
|
{
|
|
DBG1(DBG_NET, "could not open %s NAT-T socket", label);
|
|
}
|
|
}
|
|
}
|
|
|
|
METHOD(socket_t, destroy, void,
|
|
private_socket_default_socket_t *this)
|
|
{
|
|
if (this->ipv4 != -1)
|
|
{
|
|
close(this->ipv4);
|
|
}
|
|
if (this->ipv4_natt != -1)
|
|
{
|
|
close(this->ipv4_natt);
|
|
}
|
|
if (this->ipv6 != -1)
|
|
{
|
|
close(this->ipv6);
|
|
}
|
|
if (this->ipv6_natt != -1)
|
|
{
|
|
close(this->ipv6_natt);
|
|
}
|
|
free(this);
|
|
}
|
|
|
|
/*
|
|
* See header for description
|
|
*/
|
|
socket_default_socket_t *socket_default_socket_create()
|
|
{
|
|
private_socket_default_socket_t *this;
|
|
|
|
INIT(this,
|
|
.public = {
|
|
.socket = {
|
|
.send = _sender,
|
|
.receive = _receiver,
|
|
.get_port = _get_port,
|
|
.supported_families = _supported_families,
|
|
.destroy = _destroy,
|
|
},
|
|
},
|
|
.port = lib->settings->get_int(lib->settings,
|
|
"%s.port", CHARON_UDP_PORT, lib->ns),
|
|
.natt = lib->settings->get_int(lib->settings,
|
|
"%s.port_nat_t", CHARON_NATT_PORT, lib->ns),
|
|
.max_packet = lib->settings->get_int(lib->settings,
|
|
"%s.max_packet", MAX_PACKET, lib->ns),
|
|
.set_source = lib->settings->get_bool(lib->settings,
|
|
"%s.plugins.socket-default.set_source", TRUE,
|
|
lib->ns),
|
|
);
|
|
|
|
if (this->port && this->port == this->natt)
|
|
{
|
|
DBG1(DBG_NET, "IKE ports can't be equal, will allocate NAT-T "
|
|
"port randomly");
|
|
this->natt = 0;
|
|
}
|
|
|
|
if ((this->port && this->port < 1024) || (this->natt && this->natt < 1024))
|
|
{
|
|
if (!lib->caps->check(lib->caps, CAP_NET_BIND_SERVICE))
|
|
{
|
|
/* required to bind ports < 1024 */
|
|
DBG1(DBG_NET, "socket-default plugin requires CAP_NET_BIND_SERVICE "
|
|
"capability");
|
|
destroy(this);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* we allocate IPv6 sockets first as that will reserve randomly allocated
|
|
* ports also for IPv4. On OS X, we have to do it the other way round
|
|
* for the same effect. */
|
|
#ifdef __APPLE__
|
|
open_socketpair(this, AF_INET, &this->ipv4, &this->ipv4_natt, "IPv4");
|
|
open_socketpair(this, AF_INET6, &this->ipv6, &this->ipv6_natt, "IPv6");
|
|
#else /* !__APPLE__ */
|
|
open_socketpair(this, AF_INET6, &this->ipv6, &this->ipv6_natt, "IPv6");
|
|
open_socketpair(this, AF_INET, &this->ipv4, &this->ipv4_natt, "IPv4");
|
|
#endif /* __APPLE__ */
|
|
|
|
if (this->ipv4 == -1 && this->ipv6 == -1)
|
|
{
|
|
DBG1(DBG_NET, "could not create any sockets");
|
|
destroy(this);
|
|
return NULL;
|
|
}
|
|
|
|
return &this->public;
|
|
}
|