+/*
+ * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
/* $FreeBSD: src/sys/netinet6/udp6_usrreq.c,v 1.6.2.6 2001/07/29 19:32:40 ume Exp $ */
/* $KAME: udp6_usrreq.c,v 1.27 2001/05/21 05:45:10 jinmei Exp $ */
#include <sys/systm.h>
#include <sys/syslog.h>
#include <sys/proc.h>
+#include <sys/kauth.h>
#include <net/if.h>
#include <net/route.h>
#include <net/if_types.h>
+#include <net/ntstat.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
extern int ipsec_bypass;
#endif /*IPSEC*/
-#include "faith.h"
-#if defined(NFAITH) && NFAITH > 0
-#include <net/if_faith.h>
-#endif
-
/*
* UDP protocol inplementation.
* Per RFC 768, August, 1980.
*/
extern struct protosw inetsw[];
-static int in6_mcmatch __P((struct inpcb *, struct in6_addr *, struct ifnet *));
-static int udp6_detach __P((struct socket *so));
+static int udp6_detach(struct socket *so);
+static void udp6_append(struct inpcb *, struct ip6_hdr *,
+ struct sockaddr_in6 *, struct mbuf *, int);
+
+extern void ipfwsyslog( int level, const char *format,...);
+extern int fw_verbose;
+
+#if IPFIREWALL
+#define log_in_vain_log( a ) { \
+ if ( (log_in_vain == 3 ) && (fw_verbose == 2)) { /* Apple logging, log to ipfw.log */ \
+ ipfwsyslog a ; \
+ } \
+ else log a ; \
+}
+#else
+#define log_in_vain_log( a ) { log a; }
+#endif
-static int
-in6_mcmatch(in6p, ia6, ifp)
- struct inpcb *in6p;
- register struct in6_addr *ia6;
- struct ifnet *ifp;
+/*
+ * subroutine of udp6_input(), mainly for source code readability.
+ */
+static void
+udp6_append(struct inpcb *last, __unused struct ip6_hdr *ip6,
+ struct sockaddr_in6 *udp_in6, struct mbuf *n, int off)
{
- struct ip6_moptions *im6o = in6p->in6p_moptions;
- struct in6_multi_mship *imm;
-
- if (im6o == NULL)
- return 0;
-
- for (imm = im6o->im6o_memberships.lh_first; imm != NULL;
- imm = imm->i6mm_chain.le_next) {
- if ((ifp == NULL ||
- imm->i6mm_maddr->in6m_ifp == ifp) &&
- IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr,
- ia6))
- return 1;
+ struct mbuf *opts = NULL;
+ int ret = 0;
+#if CONFIG_MACF_NET
+ if (mac_inpcb_check_deliver(last, n, AF_INET6, SOCK_DGRAM) != 0) {
+ m_freem(n);
+ return;
}
- return 0;
+#endif
+ if ((last->in6p_flags & IN6P_CONTROLOPTS) != 0 ||
+ (last->in6p_socket->so_options & SO_TIMESTAMP) != 0 ||
+ (last->in6p_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0) {
+ ret = ip6_savecontrol(last, n, &opts);
+ if (ret != 0) {
+ m_freem(n);
+ m_freem(opts);
+ return;
+ }
+ }
+ m_adj(n, off);
+ if (nstat_collect) {
+ locked_add_64(&last->inp_stat->rxpackets, 1);
+ locked_add_64(&last->inp_stat->rxbytes, n->m_pkthdr.len);
+ }
+ so_recv_data_stat(last->in6p_socket, n, 0);
+ if (sbappendaddr(&last->in6p_socket->so_rcv,
+ (struct sockaddr *)udp_in6, n, opts, NULL) == 0)
+ udpstat.udps_fullsock++;
+ else
+ sorwakeup(last->in6p_socket);
}
int
-udp6_input(mp, offp)
- struct mbuf **mp;
- int *offp;
+udp6_input(
+ struct mbuf **mp,
+ int *offp,
+ int proto)
{
+#pragma unused(proto)
struct mbuf *m = *mp;
+ struct ifnet *ifp;
register struct ip6_hdr *ip6;
register struct udphdr *uh;
register struct inpcb *in6p;
struct mbuf *opts = NULL;
int off = *offp;
- int plen, ulen;
+ int plen, ulen, ret = 0;
struct sockaddr_in6 udp_in6;
+ struct inpcbinfo *pcbinfo = &udbinfo;
+ struct sockaddr_in6 fromsa;
- IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE);
+ IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), return IPPROTO_DONE);
+ ifp = m->m_pkthdr.rcvif;
ip6 = mtod(m, struct ip6_hdr *);
#if defined(NFAITH) && 0 < NFAITH
goto bad;
}
+ /* destination port of 0 is illegal, based on RFC768. */
+ if (uh->uh_dport == 0)
+ goto bad;
+
/*
* Checksum extended UDP header and data.
*/
+ if (uh->uh_sum) {
+ if ((apple_hwcksum_rx != 0) && (m->m_pkthdr.csum_flags & CSUM_DATA_VALID)) {
+ uh->uh_sum = m->m_pkthdr.csum_data;
+ uh->uh_sum ^= 0xffff;
+ }
+ else {
+ if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) {
+ udpstat.udps_badsum++;
+ goto bad;
+ }
+ }
+ }
#ifndef __APPLE__
- if (uh->uh_sum == 0)
+ else
udpstat.udps_nosum++;
#endif
- else if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) {
- udpstat.udps_badsum++;
- goto bad;
- }
+
+ /*
+ * Construct sockaddr format source address.
+ */
+ init_sin6(&fromsa, m);
+ fromsa.sin6_port = uh->uh_sport;
+
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
- struct inpcb *last;
+ int reuse_sock = 0, mcast_delivered = 0;
+ struct ip6_moptions *imo;
+ struct mbuf *n = NULL;
/*
* Deliver a multicast datagram to all sockets
* Locate pcb(s) for datagram.
* (Algorithm copied from raw_intr().)
*/
- last = NULL;
+ lck_rw_lock_shared(pcbinfo->mtx);
+
LIST_FOREACH(in6p, &udb, inp_list) {
+
if ((in6p->inp_vflag & INP_IPV6) == 0)
continue;
- if (in6p->in6p_lport != uh->uh_dport)
+
+ if (in_pcb_checkstate(in6p, WNT_ACQUIRE, 0) == WNT_STOPUSING)
+ continue;
+
+ udp_lock(in6p->in6p_socket, 1, 0);
+
+ if (in_pcb_checkstate(in6p, WNT_RELEASE, 1) == WNT_STOPUSING) {
+ udp_unlock(in6p->in6p_socket, 1, 0);
+ continue;
+ }
+ if (in6p->in6p_lport != uh->uh_dport) {
+ udp_unlock(in6p->in6p_socket, 1, 0);
continue;
- if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) {
- if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr,
- &ip6->ip6_dst) &&
- !in6_mcmatch(in6p, &ip6->ip6_dst,
- m->m_pkthdr.rcvif))
+ }
+
+ /*
+ * Handle socket delivery policy for any-source
+ * and source-specific multicast. [RFC3678]
+ */
+ imo = in6p->in6p_moptions;
+ if (imo && IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
+ struct sockaddr_in6 mcaddr;
+ int blocked;
+
+ IM6O_LOCK(imo);
+ bzero(&mcaddr, sizeof(struct sockaddr_in6));
+ mcaddr.sin6_len = sizeof(struct sockaddr_in6);
+ mcaddr.sin6_family = AF_INET6;
+ mcaddr.sin6_addr = ip6->ip6_dst;
+
+ blocked = im6o_mc_filter(imo, ifp,
+ (struct sockaddr *)&mcaddr,
+ (struct sockaddr *)&fromsa);
+ IM6O_UNLOCK(imo);
+ if (blocked != MCAST_PASS) {
+ udp_unlock(in6p->in6p_socket, 1, 0);
continue;
+ }
}
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr,
&ip6->ip6_src) ||
- in6p->in6p_fport != uh->uh_sport)
+ in6p->in6p_fport != uh->uh_sport) {
+ udp_unlock(in6p->in6p_socket, 1, 0);
continue;
+ }
}
- if (last != NULL) {
- struct mbuf *n;
+ reuse_sock = in6p->inp_socket->so_options &
+ (SO_REUSEPORT | SO_REUSEADDR);
+ {
#if IPSEC
- /*
- * Check AH/ESP integrity.
- */
- if (ipsec_bypass == 0 && ipsec6_in_reject_so(m, last->inp_socket))
- ipsec6stat.in_polvio++;
- /* do not inject data into pcb */
- else
+ int skipit = 0;
+ /* Check AH/ESP integrity. */
+ if (ipsec_bypass == 0) {
+ if (ipsec6_in_reject_so(m, in6p->inp_socket)) {
+ IPSEC_STAT_INCREMENT(ipsec6stat.in_polvio);
+ /* do not inject data to pcb */
+ skipit = 1;
+ }
+ }
+ if (skipit == 0)
#endif /*IPSEC*/
- if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
+ {
/*
* KAME NOTE: do not
- * m_copy(m, offset, ...) above.
+ * m_copy(m, offset, ...) below.
* sbappendaddr() expects M_PKTHDR,
* and m_copy() will copy M_PKTHDR
* only if offset is 0.
*/
- if (last->in6p_flags & IN6P_CONTROLOPTS
- || last->in6p_socket->so_options & SO_TIMESTAMP)
- ip6_savecontrol(last, &opts,
- ip6, n);
-
- m_adj(n, off + sizeof(struct udphdr));
- if (sbappendaddr(&last->in6p_socket->so_rcv,
- (struct sockaddr *)&udp_in6,
- n, opts) == 0) {
- m_freem(n);
- if (opts)
- m_freem(opts);
- udpstat.udps_fullsock++;
- } else
- sorwakeup(last->in6p_socket);
- opts = NULL;
+ if (reuse_sock)
+ n = m_copy(m, 0, M_COPYALL);
+ udp6_append(in6p, ip6, &udp_in6, m,
+ off + sizeof (struct udphdr));
+ mcast_delivered++;
}
+ udp_unlock(in6p->in6p_socket, 1, 0);
}
- last = in6p;
/*
* Don't look for additional matches if this one does
* not have either the SO_REUSEPORT or SO_REUSEADDR
* port. It assumes that an application will never
* clear these options after setting them.
*/
- if ((last->in6p_socket->so_options &
- (SO_REUSEPORT|SO_REUSEADDR)) == 0)
+ if (reuse_sock == 0 || ((m = n) == NULL))
break;
+ /*
+ * Recompute IP and UDP header pointers for new mbuf
+ */
+ ip6 = mtod(m, struct ip6_hdr *);
+ uh = (struct udphdr *)((caddr_t)ip6 + off);
}
+ lck_rw_done(pcbinfo->mtx);
- if (last == NULL) {
+ if (mcast_delivered == 0) {
/*
* No matching pcb found; discard datagram.
* (No need to send an ICMP Port Unreachable
#endif
goto bad;
}
-#if IPSEC
- /*
- * Check AH/ESP integrity.
- */
- if (ipsec_bypass == 0 && ipsec6_in_reject_so(m, last->inp_socket)) {
- ipsec6stat.in_polvio++;
- goto bad;
- }
-#endif /*IPSEC*/
- if (last->in6p_flags & IN6P_CONTROLOPTS
- || last->in6p_socket->so_options & SO_TIMESTAMP)
- ip6_savecontrol(last, &opts, ip6, m);
-
- m_adj(m, off + sizeof(struct udphdr));
- if (sbappendaddr(&last->in6p_socket->so_rcv,
- (struct sockaddr *)&udp_in6,
- m, opts) == 0) {
- udpstat.udps_fullsock++;
- goto bad;
- }
- sorwakeup(last->in6p_socket);
+
+ if (reuse_sock != 0) /* free the extra copy of mbuf */
+ m_freem(m);
return IPPROTO_DONE;
}
/*
if (log_in_vain) {
char buf[INET6_ADDRSTRLEN];
- strcpy(buf, ip6_sprintf(&ip6->ip6_dst));
- log(LOG_INFO,
- "Connection attempt to UDP %s:%d from %s:%d\n",
- buf, ntohs(uh->uh_dport),
- ip6_sprintf(&ip6->ip6_src), ntohs(uh->uh_sport));
+ strlcpy(buf, ip6_sprintf(&ip6->ip6_dst), sizeof(buf));
+ if (log_in_vain != 3)
+ log(LOG_INFO,
+ "Connection attempt to UDP %s:%d from %s:%d\n",
+ buf, ntohs(uh->uh_dport),
+ ip6_sprintf(&ip6->ip6_src), ntohs(uh->uh_sport));
+ else if (!(m->m_flags & (M_BCAST | M_MCAST)) &&
+ !IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, &ip6->ip6_src))
+ log_in_vain_log((LOG_INFO,
+ "Connection attempt to UDP %s:%d from %s:%d\n",
+ buf, ntohs(uh->uh_dport),
+ ip6_sprintf(&ip6->ip6_src), ntohs(uh->uh_sport)));
}
udpstat.udps_noport++;
if (m->m_flags & M_MCAST) {
/*
* Check AH/ESP integrity.
*/
- if (ipsec_bypass == 0 && ipsec6_in_reject_so(m, in6p->in6p_socket)) {
- ipsec6stat.in_polvio++;
- goto bad;
+ if (ipsec_bypass == 0) {
+ if (ipsec6_in_reject_so(m, in6p->in6p_socket)) {
+ IPSEC_STAT_INCREMENT(ipsec6stat.in_polvio);
+ in_pcb_checkstate(in6p, WNT_RELEASE, 0);
+ goto bad;
+ }
}
#endif /*IPSEC*/
* Construct sockaddr format source address.
* Stuff source address and datagram in user buffer.
*/
+ udp_lock(in6p->in6p_socket, 1, 0);
+
+ if (in_pcb_checkstate(in6p, WNT_RELEASE, 1) == WNT_STOPUSING) {
+ udp_unlock(in6p->in6p_socket, 1, 0);
+ goto bad;
+ }
+
init_sin6(&udp_in6, m); /* general init */
udp_in6.sin6_port = uh->uh_sport;
- if (in6p->in6p_flags & IN6P_CONTROLOPTS
- || in6p->in6p_socket->so_options & SO_TIMESTAMP)
- ip6_savecontrol(in6p, &opts, ip6, m);
+ if ((in6p->in6p_flags & IN6P_CONTROLOPTS) != 0 ||
+ (in6p->in6p_socket->so_options & SO_TIMESTAMP) != 0 ||
+ (in6p->in6p_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0) {
+ ret = ip6_savecontrol(in6p, m, &opts);
+ if (ret != 0) {
+ udp_unlock(in6p->in6p_socket, 1, 0);
+ goto bad;
+ }
+ }
m_adj(m, off + sizeof(struct udphdr));
+ if (nstat_collect) {
+ locked_add_64(&in6p->inp_stat->rxpackets, 1);
+ locked_add_64(&in6p->inp_stat->rxbytes, m->m_pkthdr.len);
+ }
+ so_recv_data_stat(in6p->in6p_socket, m, 0);
if (sbappendaddr(&in6p->in6p_socket->so_rcv,
(struct sockaddr *)&udp_in6,
- m, opts) == 0) {
+ m, opts, NULL) == 0) {
+ m = NULL;
+ opts = NULL;
udpstat.udps_fullsock++;
+ udp_unlock(in6p->in6p_socket, 1, 0);
goto bad;
}
sorwakeup(in6p->in6p_socket);
+ udp_unlock(in6p->in6p_socket, 1, 0);
return IPPROTO_DONE;
bad:
if (m)
}
void
-udp6_ctlinput(cmd, sa, d)
- int cmd;
- struct sockaddr *sa;
- void *d;
+udp6_ctlinput(
+ int cmd,
+ struct sockaddr *sa,
+ void *d)
{
struct udphdr uh;
struct ip6_hdr *ip6;
int off = 0;
struct ip6ctlparam *ip6cp = NULL;
const struct sockaddr_in6 *sa6_src = NULL;
- void (*notify) __P((struct inpcb *, int)) = udp_notify;
+ void (*notify)(struct inpcb *, int) = udp_notify;
struct udp_portonly {
u_int16_t uh_sport;
u_int16_t uh_dport;
bzero(&uh, sizeof(uh));
m_copydata(m, off, sizeof(*uhp), (caddr_t)&uh);
- (void) in6_pcbnotify(&udb, sa, uh.uh_dport,
+ (void) in6_pcbnotify(&udbinfo, sa, uh.uh_dport,
(struct sockaddr*)ip6cp->ip6c_src,
- uh.uh_sport, cmd, notify);
+ uh.uh_sport, cmd, NULL, notify);
} else
- (void) in6_pcbnotify(&udb, sa, 0, (struct sockaddr *)&sa6_src,
- 0, cmd, notify);
+ (void) in6_pcbnotify(&udbinfo, sa, 0, (struct sockaddr *)&sa6_src,
+ 0, cmd, NULL, notify);
}
#ifndef __APPLE__
struct inpcb *inp;
int error, s;
- error = suser(req->p->p_ucred, &req->p->p_acflag);
+ error = proc_suser(req->p);
if (error)
return (error);
if (req->newlen != sizeof(addrs))
return (EINVAL);
- if (req->oldlen != sizeof(struct ucred))
+ if (req->oldlen != sizeof(*(kauth_cred_t)0))
return (EINVAL);
error = SYSCTL_IN(req, addrs, sizeof(addrs));
if (error)
error = ENOENT;
goto out;
}
+ /*
+ * XXX This should not be copying out a credential!!!! This
+ * XXX is an opaque type, and is not intended to be introspected,
+ * XXX and the size of this structure *WILL* change as planned MACF
+ * XXX and kauth changes go forward.
+ */
error = SYSCTL_OUT(req, inp->inp_socket->so_cred->pc_ucred,
- sizeof(struct ucred));
+ sizeof(*(kauth_cred_t)0));
out:
splx(s);
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)
+udp6_attach(struct socket *so, __unused int proto, struct proc *p)
{
struct inpcb *inp;
- int s, error;
+ int error;
inp = sotoinpcb(so);
if (inp != 0)
return EINVAL;
+ error = in_pcballoc(so, &udbinfo, p);
+ if (error)
+ return error;
+
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;
if (ip6_mapped_addr_on)
* which may match an IPv4-mapped IPv6 address.
*/
inp->inp_ip_ttl = ip_defttl;
+ nstat_udp_new_pcb(inp);
return 0;
}
udp6_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
{
struct inpcb *inp;
- int s, error;
+ int error;
inp = sotoinpcb(so);
if (inp == 0)
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;
}
udp6_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
{
struct inpcb *inp;
- int s, error;
+ int error;
inp = sotoinpcb(so);
if (inp == 0)
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);
+ error = in_pcbconnect(inp, (struct sockaddr *)&sin, p, NULL);
if (error == 0) {
inp->inp_vflag |= INP_IPV4;
inp->inp_vflag &= ~INP_IPV6;
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr))
return EISCONN;
- s = splnet();
error = in6_pcbconnect(inp, nam, p);
- splx(s);
if (error == 0) {
if (ip6_mapped_addr_on || (inp->inp_flags & IN6P_IPV6_V6ONLY) == 0) { /* should be non mapped addr */
inp->inp_vflag &= ~INP_IPV4;
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;
}
udp6_disconnect(struct socket *so)
{
struct inpcb *inp;
- int s;
inp = sotoinpcb(so);
if (inp == 0)
if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr))
return ENOTCONN;
- s = splnet();
in6_pcbdisconnect(inp);
inp->in6p_laddr = in6addr_any;
- splx(s);
+ inp->in6p_last_outif = 0;
so->so_state &= ~SS_ISCONNECTED; /* XXX */
return 0;
}
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
+ in6_mapped_sockaddr, sosend, soreceive, pru_sopoll_notsupp
};
projects / apple / xnu.git / blobdiff