836 lines
21 KiB
C
836 lines
21 KiB
C
/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)udp_var.h 8.1 (Berkeley) 6/10/93
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sysctl.h>
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#include <sys/errno.h>
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#include <sys/stat.h>
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#include <sys/systm.h>
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#include <sys/syslog.h>
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#include <sys/proc.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <net/if_types.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/in_pcb.h>
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#include <netinet/in_var.h>
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#include <netinet/ip_var.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <netinet6/ip6.h>
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#include <netinet6/ip6_var.h>
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#include <netinet6/in6_pcb.h>
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#include <netinet6/icmp6.h>
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#include <netinet6/udp6_var.h>
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#include <netinet6/ip6protosw.h>
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#ifdef IPSEC
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#include <netinet6/ipsec.h>
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#endif /*IPSEC*/
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#include "faith.h"
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/*
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* UDP protocol inplementation.
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* Per RFC 768, August, 1980.
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*/
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extern struct protosw inetsw[];
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static int in6_mcmatch __P((struct inpcb *, struct in6_addr *, struct ifnet *));
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static int udp6_detach __P((struct socket *so));
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static int
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in6_mcmatch(in6p, ia6, ifp)
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struct inpcb *in6p;
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register struct in6_addr *ia6;
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struct ifnet *ifp;
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{
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struct ip6_moptions *im6o = in6p->in6p_moptions;
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struct in6_multi_mship *imm;
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if (im6o == NULL)
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return 0;
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for (imm = im6o->im6o_memberships.lh_first; imm != NULL;
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imm = imm->i6mm_chain.le_next) {
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if ((ifp == NULL ||
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imm->i6mm_maddr->in6m_ifp == ifp) &&
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IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr,
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ia6))
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return 1;
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}
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return 0;
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}
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int
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udp6_input(mp, offp, proto)
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struct mbuf **mp;
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int *offp, proto;
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{
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struct mbuf *m = *mp;
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register struct ip6_hdr *ip6;
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register struct udphdr *uh;
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register struct inpcb *in6p;
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struct mbuf *opts = 0;
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int off = *offp;
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int plen, ulen;
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struct sockaddr_in6 udp_in6;
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#if defined(NFAITH) && 0 < NFAITH
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if (m->m_pkthdr.rcvif) {
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if (m->m_pkthdr.rcvif->if_type == IFT_FAITH) {
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/* XXX send icmp6 host/port unreach? */
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m_freem(m);
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return IPPROTO_DONE;
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}
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}
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#endif
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udpstat.udps_ipackets++;
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IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE);
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ip6 = mtod(m, struct ip6_hdr *);
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plen = ntohs(ip6->ip6_plen) - off + sizeof(*ip6);
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uh = (struct udphdr *)((caddr_t)ip6 + off);
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ulen = ntohs((u_short)uh->uh_ulen);
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if (plen != ulen) {
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udpstat.udps_badlen++;
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goto bad;
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}
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/*
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* Checksum extended UDP header and data.
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*/
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if (uh->uh_sum == 0)
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udpstat.udps_nosum++;
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else if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) {
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udpstat.udps_badsum++;
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goto bad;
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}
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if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
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struct inpcb *last;
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/*
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* Deliver a multicast datagram to all sockets
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* for which the local and remote addresses and ports match
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* those of the incoming datagram. This allows more than
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* one process to receive multicasts on the same port.
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* (This really ought to be done for unicast datagrams as
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* well, but that would cause problems with existing
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* applications that open both address-specific sockets and
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* a wildcard socket listening to the same port -- they would
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* end up receiving duplicates of every unicast datagram.
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* Those applications open the multiple sockets to overcome an
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* inadequacy of the UDP socket interface, but for backwards
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* compatibility we avoid the problem here rather than
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* fixing the interface. Maybe 4.5BSD will remedy this?)
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*/
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/*
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* In a case that laddr should be set to the link-local
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* address (this happens in RIPng), the multicast address
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* specified in the received packet does not match with
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* laddr. To cure this situation, the matching is relaxed
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* if the receiving interface is the same as one specified
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* in the socket and if the destination multicast address
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* matches one of the multicast groups specified in the socket.
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*/
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/*
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* Construct sockaddr format source address.
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*/
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init_sin6(&udp_in6, m); /* general init */
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udp_in6.sin6_port = uh->uh_sport;
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/*
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* KAME note: usually we drop udphdr from mbuf here.
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* We need udphdr for IPsec processing so we do that later.
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*/
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/*
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* Locate pcb(s) for datagram.
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* (Algorithm copied from raw_intr().)
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*/
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last = NULL;
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LIST_FOREACH(in6p, &udb, inp_list) {
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if ((in6p->inp_vflag & INP_IPV6) == NULL)
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continue;
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if (in6p->in6p_lport != uh->uh_dport)
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continue;
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if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) {
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if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr,
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&ip6->ip6_dst) &&
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!in6_mcmatch(in6p, &ip6->ip6_dst,
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m->m_pkthdr.rcvif))
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continue;
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}
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if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
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if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr,
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&ip6->ip6_src) ||
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in6p->in6p_fport != uh->uh_sport)
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continue;
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}
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if (last != NULL) {
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struct mbuf *n;
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#ifdef IPSEC
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/*
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* Check AH/ESP integrity.
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*/
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if (last != NULL &&
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ipsec6_in_reject_so(m, last->inp_socket)) {
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ipsec6stat.in_polvio++;
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/* do not inject data into pcb */
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} else
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#endif /*IPSEC*/
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if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
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/*
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* KAME NOTE: do not
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* m_copy(m, offset, ...) above.
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* sbappendaddr() expects M_PKTHDR,
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* and m_copy() will copy M_PKTHDR
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* only if offset is 0.
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*/
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if (last->in6p_flags & IN6P_CONTROLOPTS
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|| last->in6p_socket->so_options & SO_TIMESTAMP)
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ip6_savecontrol(last, &opts,
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ip6, n);
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m_adj(n, off + sizeof(struct udphdr));
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if (sbappendaddr(&last->in6p_socket->so_rcv,
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(struct sockaddr *)&udp_in6,
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n, opts) == 0) {
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m_freem(n);
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if (opts)
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m_freem(opts);
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udpstat.udps_fullsock++;
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} else
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sorwakeup(last->in6p_socket);
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opts = 0;
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}
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}
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last = in6p;
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/*
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* Don't look for additional matches if this one does
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* not have either the SO_REUSEPORT or SO_REUSEADDR
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* socket options set. This heuristic avoids searching
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* through all pcbs in the common case of a non-shared
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* port. It assumes that an application will never
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* clear these options after setting them.
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*/
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if ((last->in6p_socket->so_options &
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(SO_REUSEPORT|SO_REUSEADDR)) == 0)
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break;
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}
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if (last == NULL) {
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/*
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* No matching pcb found; discard datagram.
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* (No need to send an ICMP Port Unreachable
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* for a broadcast or multicast datgram.)
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*/
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udpstat.udps_noport++;
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udpstat.udps_noportmcast++;
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goto bad;
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}
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#ifdef IPSEC
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/*
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* Check AH/ESP integrity.
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*/
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if (last != NULL && ipsec6_in_reject_so(m, last->inp_socket)) {
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ipsec6stat.in_polvio++;
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goto bad;
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}
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#endif /*IPSEC*/
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if (last->in6p_flags & IN6P_CONTROLOPTS
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|| last->in6p_socket->so_options & SO_TIMESTAMP)
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ip6_savecontrol(last, &opts, ip6, m);
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m_adj(m, off + sizeof(struct udphdr));
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if (sbappendaddr(&last->in6p_socket->so_rcv,
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(struct sockaddr *)&udp_in6,
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m, opts) == 0) {
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udpstat.udps_fullsock++;
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goto bad;
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}
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sorwakeup(last->in6p_socket);
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return IPPROTO_DONE;
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}
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/*
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* Locate pcb for datagram.
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*/
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in6p = in6_pcblookup_hash(&udbinfo, &ip6->ip6_src, uh->uh_sport,
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&ip6->ip6_dst, uh->uh_dport, 1,
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m->m_pkthdr.rcvif);
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if (in6p == 0) {
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if (log_in_vain) {
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char buf[INET6_ADDRSTRLEN];
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strcpy(buf, ip6_sprintf(&ip6->ip6_dst));
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log(LOG_INFO,
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"Connection attempt to UDP %s:%d from %s:%d\n",
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buf, ntohs(uh->uh_dport),
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ip6_sprintf(&ip6->ip6_src), ntohs(uh->uh_sport));
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}
|
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udpstat.udps_noport++;
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if (m->m_flags & M_MCAST) {
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printf("UDP6: M_MCAST is set in a unicast packet.\n");
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udpstat.udps_noportmcast++;
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goto bad;
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}
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icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0);
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return IPPROTO_DONE;
|
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}
|
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#ifdef IPSEC
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/*
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* Check AH/ESP integrity.
|
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*/
|
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if (in6p != NULL && ipsec6_in_reject_so(m, in6p->in6p_socket)) {
|
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ipsec6stat.in_polvio++;
|
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goto bad;
|
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}
|
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#endif /*IPSEC*/
|
|
|
|
/*
|
|
* Construct sockaddr format source address.
|
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* Stuff source address and datagram in user buffer.
|
|
*/
|
|
init_sin6(&udp_in6, m); /* general init */
|
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udp_in6.sin6_port = uh->uh_sport;
|
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if (in6p->in6p_flags & IN6P_CONTROLOPTS
|
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|| in6p->in6p_socket->so_options & SO_TIMESTAMP)
|
|
ip6_savecontrol(in6p, &opts, ip6, m);
|
|
m_adj(m, off + sizeof(struct udphdr));
|
|
if (sbappendaddr(&in6p->in6p_socket->so_rcv,
|
|
(struct sockaddr *)&udp_in6,
|
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m, opts) == 0) {
|
|
udpstat.udps_fullsock++;
|
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goto bad;
|
|
}
|
|
sorwakeup(in6p->in6p_socket);
|
|
return IPPROTO_DONE;
|
|
bad:
|
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if (m)
|
|
m_freem(m);
|
|
if (opts)
|
|
m_freem(opts);
|
|
return IPPROTO_DONE;
|
|
}
|
|
|
|
void
|
|
udp6_ctlinput(cmd, sa, d)
|
|
int cmd;
|
|
struct sockaddr *sa;
|
|
void *d;
|
|
{
|
|
register struct udphdr *uhp;
|
|
struct udphdr uh;
|
|
struct sockaddr_in6 sa6;
|
|
struct ip6_hdr *ip6;
|
|
struct mbuf *m;
|
|
int off;
|
|
|
|
if (sa->sa_family != AF_INET6 ||
|
|
sa->sa_len != sizeof(struct sockaddr_in6))
|
|
return;
|
|
|
|
if (!PRC_IS_REDIRECT(cmd) &&
|
|
((unsigned)cmd >= PRC_NCMDS || inet6ctlerrmap[cmd] == 0))
|
|
return;
|
|
|
|
/* if the parameter is from icmp6, decode it. */
|
|
if (d != NULL) {
|
|
struct ip6ctlparam *ip6cp = (struct ip6ctlparam *)d;
|
|
m = ip6cp->ip6c_m;
|
|
ip6 = ip6cp->ip6c_ip6;
|
|
off = ip6cp->ip6c_off;
|
|
} else {
|
|
m = NULL;
|
|
ip6 = NULL;
|
|
}
|
|
|
|
/* translate addresses into internal form */
|
|
sa6 = *(struct sockaddr_in6 *)sa;
|
|
if (IN6_IS_ADDR_LINKLOCAL(&sa6.sin6_addr))
|
|
sa6.sin6_addr.s6_addr16[1] = htons(m->m_pkthdr.rcvif->if_index);
|
|
|
|
if (ip6) {
|
|
/*
|
|
* XXX: We assume that when IPV6 is non NULL,
|
|
* M and OFF are valid.
|
|
*/
|
|
struct in6_addr s;
|
|
|
|
/* translate addresses into internal form */
|
|
memcpy(&s, &ip6->ip6_src, sizeof(s));
|
|
if (IN6_IS_ADDR_LINKLOCAL(&s))
|
|
s.s6_addr16[1] = htons(m->m_pkthdr.rcvif->if_index);
|
|
|
|
if (m->m_len < off + sizeof(uh)) {
|
|
/*
|
|
* this should be rare case,
|
|
* so we compromise on this copy...
|
|
*/
|
|
m_copydata(m, off, sizeof(uh), (caddr_t)&uh);
|
|
uhp = &uh;
|
|
} else
|
|
uhp = (struct udphdr *)(mtod(m, caddr_t) + off);
|
|
(void) in6_pcbnotify(&udb, (struct sockaddr *)&sa6,
|
|
uhp->uh_dport, &s,
|
|
uhp->uh_sport, cmd, udp_notify);
|
|
} else
|
|
(void) in6_pcbnotify(&udb, (struct sockaddr *)&sa6, 0,
|
|
&zeroin6_addr, 0, cmd, udp_notify);
|
|
}
|
|
|
|
static int
|
|
udp6_getcred SYSCTL_HANDLER_ARGS
|
|
{
|
|
struct sockaddr_in6 addrs[2];
|
|
struct inpcb *inp;
|
|
int error, s;
|
|
|
|
error = suser(req->p);
|
|
if (error)
|
|
return (error);
|
|
error = SYSCTL_IN(req, addrs, sizeof(addrs));
|
|
if (error)
|
|
return (error);
|
|
s = splnet();
|
|
inp = in6_pcblookup_hash(&udbinfo, &addrs[1].sin6_addr,
|
|
addrs[1].sin6_port,
|
|
&addrs[0].sin6_addr, addrs[0].sin6_port,
|
|
1, NULL);
|
|
if (!inp || !inp->inp_socket || !inp->inp_socket->so_cred) {
|
|
error = ENOENT;
|
|
goto out;
|
|
}
|
|
error = SYSCTL_OUT(req, inp->inp_socket->so_cred,
|
|
sizeof(struct ucred));
|
|
|
|
out:
|
|
splx(s);
|
|
return (error);
|
|
}
|
|
|
|
SYSCTL_PROC(_net_inet6_udp6, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW,
|
|
0, 0,
|
|
udp6_getcred, "S,ucred", "Get the ucred of a UDP6 connection");
|
|
|
|
int
|
|
udp6_output(in6p, m, addr6, control, p)
|
|
register struct inpcb *in6p;
|
|
struct mbuf *m;
|
|
struct sockaddr *addr6;
|
|
struct mbuf *control;
|
|
struct proc *p;
|
|
{
|
|
register int ulen = m->m_pkthdr.len;
|
|
int plen = sizeof(struct udphdr) + ulen;
|
|
struct ip6_hdr *ip6;
|
|
struct udphdr *udp6;
|
|
struct in6_addr laddr6;
|
|
int s = 0, error = 0;
|
|
struct ip6_pktopts opt, *stickyopt = in6p->in6p_outputopts;
|
|
|
|
if (control) {
|
|
if ((error = ip6_setpktoptions(control, &opt, suser(p))) != 0)
|
|
goto release;
|
|
in6p->in6p_outputopts = &opt;
|
|
}
|
|
|
|
if (addr6) {
|
|
laddr6 = in6p->in6p_laddr;
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
|
|
error = EISCONN;
|
|
goto release;
|
|
}
|
|
/*
|
|
* Must block input while temporarily connected.
|
|
*/
|
|
s = splnet();
|
|
/*
|
|
* XXX: the user might want to overwrite the local address
|
|
* via an ancillary data.
|
|
*/
|
|
bzero(&in6p->in6p_laddr, sizeof(struct in6_addr));
|
|
error = in6_pcbconnect(in6p, addr6, p);
|
|
if (error) {
|
|
splx(s);
|
|
goto release;
|
|
}
|
|
} else {
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
|
|
error = ENOTCONN;
|
|
goto release;
|
|
}
|
|
}
|
|
/*
|
|
* Calculate data length and get a mbuf
|
|
* for UDP and IP6 headers.
|
|
*/
|
|
M_PREPEND(m, sizeof(struct ip6_hdr) + sizeof(struct udphdr),
|
|
M_DONTWAIT);
|
|
if (m == 0) {
|
|
error = ENOBUFS;
|
|
if (addr6)
|
|
splx(s);
|
|
goto release;
|
|
}
|
|
|
|
/*
|
|
* Stuff checksum and output datagram.
|
|
*/
|
|
ip6 = mtod(m, struct ip6_hdr *);
|
|
ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK;
|
|
ip6->ip6_vfc = IPV6_VERSION;
|
|
/* ip6_plen will be filled in ip6_output. */
|
|
ip6->ip6_nxt = IPPROTO_UDP;
|
|
ip6->ip6_hlim = in6_selecthlim(in6p,
|
|
in6p->in6p_route.ro_rt ?
|
|
in6p->in6p_route.ro_rt->rt_ifp :
|
|
NULL);
|
|
ip6->ip6_src = in6p->in6p_laddr;
|
|
ip6->ip6_dst = in6p->in6p_faddr;
|
|
|
|
udp6 = (struct udphdr *)(ip6 + 1);
|
|
udp6->uh_sport = in6p->in6p_lport;
|
|
udp6->uh_dport = in6p->in6p_fport;
|
|
udp6->uh_ulen = htons((u_short)plen);
|
|
udp6->uh_sum = 0;
|
|
|
|
if ((udp6->uh_sum = in6_cksum(m, IPPROTO_UDP,
|
|
sizeof(struct ip6_hdr), plen)) == 0) {
|
|
udp6->uh_sum = 0xffff;
|
|
}
|
|
|
|
udpstat.udps_opackets++;
|
|
|
|
#ifdef IPSEC
|
|
m->m_pkthdr.rcvif = (struct ifnet *)in6p->in6p_socket;
|
|
#endif /*IPSEC*/
|
|
error = ip6_output(m, in6p->in6p_outputopts, &in6p->in6p_route,
|
|
0, in6p->in6p_moptions, NULL);
|
|
|
|
if (addr6) {
|
|
in6_pcbdisconnect(in6p);
|
|
in6p->in6p_laddr = laddr6;
|
|
splx(s);
|
|
}
|
|
goto releaseopt;
|
|
|
|
release:
|
|
m_freem(m);
|
|
|
|
releaseopt:
|
|
if (control) {
|
|
in6p->in6p_outputopts = stickyopt;
|
|
m_freem(control);
|
|
}
|
|
return(error);
|
|
}
|
|
|
|
static int
|
|
udp6_abort(struct socket *so)
|
|
{
|
|
struct inpcb *inp;
|
|
int s;
|
|
|
|
inp = sotoinpcb(so);
|
|
if (inp == 0)
|
|
return EINVAL; /* ??? possible? panic instead? */
|
|
soisdisconnected(so);
|
|
s = splnet();
|
|
in6_pcbdetach(inp);
|
|
splx(s);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
udp6_attach(struct socket *so, int proto, struct proc *p)
|
|
{
|
|
struct inpcb *inp;
|
|
int s, error;
|
|
|
|
inp = sotoinpcb(so);
|
|
if (inp != 0)
|
|
return EINVAL;
|
|
|
|
if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
|
|
error = soreserve(so, udp_sendspace, udp_recvspace);
|
|
if (error)
|
|
return error;
|
|
}
|
|
s = splnet();
|
|
error = in_pcballoc(so, &udbinfo, p);
|
|
splx(s);
|
|
if (error)
|
|
return error;
|
|
inp = (struct inpcb *)so->so_pcb;
|
|
inp->inp_vflag |= INP_IPV6;
|
|
inp->in6p_hops = -1; /* use kernel default */
|
|
inp->in6p_cksum = -1; /* just to be sure */
|
|
#ifdef IPSEC
|
|
error = ipsec_init_policy(so, &inp->in6p_sp);
|
|
if (error != 0) {
|
|
in6_pcbdetach(inp);
|
|
return (error);
|
|
}
|
|
#endif /*IPSEC*/
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
udp6_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
|
|
{
|
|
struct inpcb *inp;
|
|
int s, error;
|
|
|
|
inp = sotoinpcb(so);
|
|
if (inp == 0)
|
|
return EINVAL;
|
|
|
|
inp->inp_vflag &= ~INP_IPV4;
|
|
inp->inp_vflag |= INP_IPV6;
|
|
if (ip6_mapped_addr_on && (inp->inp_flags & IN6P_BINDV6ONLY) == NULL) {
|
|
struct sockaddr_in6 *sin6_p;
|
|
|
|
sin6_p = (struct sockaddr_in6 *)nam;
|
|
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr))
|
|
inp->inp_vflag |= INP_IPV4;
|
|
else if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
|
|
struct sockaddr_in sin;
|
|
|
|
in6_sin6_2_sin(&sin, sin6_p);
|
|
inp->inp_vflag |= INP_IPV4;
|
|
inp->inp_vflag &= ~INP_IPV6;
|
|
s = splnet();
|
|
error = in_pcbbind(inp, (struct sockaddr *)&sin, p);
|
|
splx(s);
|
|
return error;
|
|
}
|
|
}
|
|
|
|
s = splnet();
|
|
error = in6_pcbbind(inp, nam, p);
|
|
splx(s);
|
|
return error;
|
|
}
|
|
|
|
static int
|
|
udp6_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
|
|
{
|
|
struct inpcb *inp;
|
|
int s, error;
|
|
|
|
inp = sotoinpcb(so);
|
|
if (inp == 0)
|
|
return EINVAL;
|
|
|
|
if (ip6_mapped_addr_on) {
|
|
struct sockaddr_in6 *sin6_p;
|
|
|
|
sin6_p = (struct sockaddr_in6 *)nam;
|
|
if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
|
|
struct sockaddr_in sin;
|
|
|
|
if (inp->inp_faddr.s_addr != INADDR_ANY)
|
|
return EISCONN;
|
|
in6_sin6_2_sin(&sin, sin6_p);
|
|
s = splnet();
|
|
error = in_pcbconnect(inp, (struct sockaddr *)&sin, p);
|
|
splx(s);
|
|
if (error == NULL) {
|
|
inp->inp_vflag |= INP_IPV4;
|
|
inp->inp_vflag &= ~INP_IPV6;
|
|
soisconnected(so);
|
|
}
|
|
return error;
|
|
}
|
|
}
|
|
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr))
|
|
return EISCONN;
|
|
s = splnet();
|
|
error = in6_pcbconnect(inp, nam, p);
|
|
if (ip6_auto_flowlabel) {
|
|
inp->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK;
|
|
inp->in6p_flowinfo |=
|
|
(htonl(ip6_flow_seq++) & IPV6_FLOWLABEL_MASK);
|
|
}
|
|
splx(s);
|
|
if (error == NULL) {
|
|
if (ip6_mapped_addr_on) { /* should be non mapped addr */
|
|
inp->inp_vflag &= ~INP_IPV4;
|
|
inp->inp_vflag |= INP_IPV6;
|
|
}
|
|
soisconnected(so);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
static int
|
|
udp6_detach(struct socket *so)
|
|
{
|
|
struct inpcb *inp;
|
|
int s;
|
|
|
|
inp = sotoinpcb(so);
|
|
if (inp == 0)
|
|
return EINVAL;
|
|
s = splnet();
|
|
in6_pcbdetach(inp);
|
|
splx(s);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
udp6_disconnect(struct socket *so)
|
|
{
|
|
struct inpcb *inp;
|
|
int s;
|
|
|
|
inp = sotoinpcb(so);
|
|
if (inp == 0)
|
|
return EINVAL;
|
|
|
|
if (inp->inp_vflag & INP_IPV4) {
|
|
struct pr_usrreqs *pru;
|
|
|
|
pru = inetsw[ip_protox[IPPROTO_UDP]].pr_usrreqs;
|
|
return ((*pru->pru_disconnect)(so));
|
|
}
|
|
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr))
|
|
return ENOTCONN;
|
|
|
|
s = splnet();
|
|
in6_pcbdisconnect(inp);
|
|
inp->in6p_laddr = in6addr_any;
|
|
splx(s);
|
|
so->so_state &= ~SS_ISCONNECTED; /* XXX */
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
udp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
|
|
struct mbuf *control, struct proc *p)
|
|
{
|
|
struct inpcb *inp;
|
|
|
|
inp = sotoinpcb(so);
|
|
if (inp == 0) {
|
|
m_freem(m);
|
|
return EINVAL;
|
|
}
|
|
|
|
if (ip6_mapped_addr_on) {
|
|
int hasv4addr;
|
|
struct sockaddr_in6 *sin6 = 0;
|
|
|
|
if (addr == 0)
|
|
hasv4addr = (inp->inp_vflag & INP_IPV4);
|
|
else {
|
|
sin6 = (struct sockaddr_in6 *)addr;
|
|
hasv4addr = IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)
|
|
? 1 : 0;
|
|
}
|
|
if (hasv4addr) {
|
|
struct pr_usrreqs *pru;
|
|
int error;
|
|
|
|
if (sin6)
|
|
in6_sin6_2_sin_in_sock(addr);
|
|
pru = inetsw[ip_protox[IPPROTO_UDP]].pr_usrreqs;
|
|
error = ((*pru->pru_send)(so, flags, m, addr, control,
|
|
p));
|
|
/* addr will just be freed in sendit(). */
|
|
return error;
|
|
}
|
|
}
|
|
|
|
return udp6_output(inp, m, addr, control, p);
|
|
}
|
|
|
|
struct pr_usrreqs udp6_usrreqs = {
|
|
udp6_abort, pru_accept_notsupp, udp6_attach, udp6_bind, udp6_connect,
|
|
pru_connect2_notsupp, in6_control, udp6_detach, udp6_disconnect,
|
|
pru_listen_notsupp, in6_mapped_peeraddr, pru_rcvd_notsupp,
|
|
pru_rcvoob_notsupp, udp6_send, pru_sense_null, udp_shutdown,
|
|
in6_mapped_sockaddr, sosend, soreceive, sopoll
|
|
};
|