+/*
+ * 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 <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>
#include <netinet6/ipsec.h>
#include <netinet6/ipsec6.h>
extern int ipsec_bypass;
-extern lck_mtx_t *sadb_mutex;
-extern lck_mtx_t *nd6_mutex;
#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(struct inpcb *, struct in6_addr *, struct ifnet *);
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, char *format,...);
+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(
- 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;
-
- lck_mtx_lock(nd6_mutex);
- 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)) {
- lck_mtx_unlock(nd6_mutex);
- 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;
+ }
+#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;
}
}
- lck_mtx_unlock(nd6_mutex);
- return 0;
+ 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(
struct mbuf **mp,
- int *offp)
+ 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), 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) {
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 (last != NULL) {
- struct mbuf *n;
+ reuse_sock = in6p->inp_socket->so_options &
+ (SO_REUSEPORT | SO_REUSEADDR);
+ {
#if IPSEC
- /*
- * Check AH/ESP integrity.
- */
+ int skipit = 0;
+ /* Check AH/ESP integrity. */
if (ipsec_bypass == 0) {
- lck_mtx_lock(sadb_mutex);
- if (ipsec6_in_reject_so(m, last->inp_socket))
- ipsec6stat.in_polvio++;
- /* do not inject data into pcb */
- lck_mtx_unlock(sadb_mutex);
+ if (ipsec6_in_reject_so(m, in6p->inp_socket)) {
+ IPSEC_STAT_INCREMENT(ipsec6stat.in_polvio);
+ /* do not inject data to pcb */
+ skipit = 1;
+ }
}
- else
+ 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, NULL) == 0) {
- 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(last->in6p_socket, 1, 0);
+ 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) {
- lck_mtx_lock(sadb_mutex);
- if (ipsec6_in_reject_so(m, last->inp_socket)) {
- ipsec6stat.in_polvio++;
- lck_mtx_unlock(sadb_mutex);
- udp_unlock(last->in6p_socket, 1, 0);
- goto bad;
- }
- lck_mtx_unlock(sadb_mutex);
- }
-#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, NULL) == 0) {
- udpstat.udps_fullsock++;
- m = NULL;
- opts = NULL;
- udp_unlock(last->in6p_socket, 1, 0);
- goto bad;
- }
- sorwakeup(last->in6p_socket);
- udp_unlock(last->in6p_socket, 1, 0);
+
+ 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));
+ 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",
* Check AH/ESP integrity.
*/
if (ipsec_bypass == 0) {
- lck_mtx_lock(sadb_mutex);
if (ipsec6_in_reject_so(m, in6p->in6p_socket)) {
- ipsec6stat.in_polvio++;
- lck_mtx_unlock(sadb_mutex);
+ IPSEC_STAT_INCREMENT(ipsec6stat.in_polvio);
in_pcb_checkstate(in6p, WNT_RELEASE, 0);
goto bad;
}
- lck_mtx_unlock(sadb_mutex);
}
#endif /*IPSEC*/
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, NULL) == 0) {
(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(&udbinfo, sa, 0, (struct sockaddr *)&sa6_src,
- 0, cmd, notify);
+ 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);
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(*(kauth_cred_t)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 error;
* which may match an IPv4-mapped IPv6 address.
*/
inp->inp_ip_ttl = ip_defttl;
+ nstat_udp_new_pcb(inp);
return 0;
}
if (inp->inp_faddr.s_addr != INADDR_ANY)
return EISCONN;
in6_sin6_2_sin(&sin, sin6_p);
- error = in_pcbconnect(inp, (struct sockaddr *)&sin, p);
+ error = in_pcbconnect(inp, (struct sockaddr *)&sin, p, NULL);
if (error == 0) {
inp->inp_vflag |= INP_IPV4;
inp->inp_vflag &= ~INP_IPV6;
in6_pcbdisconnect(inp);
inp->in6p_laddr = in6addr_any;
+ inp->in6p_last_outif = 0;
so->so_state &= ~SS_ISCONNECTED; /* XXX */
return 0;
}
projects / apple / xnu.git / blobdiff