#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/domain.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sockio.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/kauth.h>
#include <sys/priv.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/in_systm.h>
#include <netinet/ip6.h>
#include <netinet/ip_var.h>
#include <netinet6/ip6_var.h>
#include <netinet6/nd6.h>
#include <netinet/in_pcb.h>
#include <netinet6/in6_pcb.h>
#include <net/if_types.h>
#include <kern/kern_types.h>
#include <kern/zalloc.h>
#if IPSEC
#include <netinet6/ipsec.h>
#if INET6
#include <netinet6/ipsec6.h>
#endif
#include <netinet6/ah.h>
#if INET6
#include <netinet6/ah6.h>
#endif
#include <netkey/key.h>
#endif
struct in6_addr zeroin6_addr;
static struct inpcb*
in6_pcblookup_local_and_cleanup(
struct inpcbinfo *pcbinfo,
struct in6_addr *laddr,
u_int lport_arg,
int wild_okay)
{
struct inpcb *inp;
inp = in6_pcblookup_local(pcbinfo, laddr, lport_arg, wild_okay);
if (inp && inp->inp_wantcnt == WNT_STOPUSING) {
struct socket *so = inp->inp_socket;
lck_mtx_lock(&inp->inpcb_mtx);
if (so->so_usecount == 0) {
if (inp->inp_state != INPCB_STATE_DEAD)
in6_pcbdetach(inp);
in_pcbdispose(inp);
inp = NULL;
}
else {
lck_mtx_unlock(&inp->inpcb_mtx);
}
}
return inp;
}
int
in6_pcbbind(struct inpcb *inp, struct sockaddr *nam, struct proc *p)
{
struct socket *so = inp->inp_socket;
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)NULL;
struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
u_short lport = 0;
int wild = 0, reuseport = (so->so_options & SO_REUSEPORT);
int error;
kauth_cred_t cred;
if (!in6_ifaddrs)
return (EADDRNOTAVAIL);
if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
return(EINVAL);
if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
wild = 1;
socket_unlock(so, 0);
lck_rw_lock_exclusive(pcbinfo->mtx);
if (nam) {
unsigned int outif = 0;
sin6 = (struct sockaddr_in6 *)nam;
if (nam->sa_len != sizeof(*sin6)) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EINVAL);
}
if (nam->sa_family != AF_INET6) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EAFNOSUPPORT);
}
if (in6_embedscope(&sin6->sin6_addr, sin6, inp, NULL,
NULL) != 0) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return EINVAL;
}
sin6->sin6_scope_id = 0;
lport = sin6->sin6_port;
if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
if (so->so_options & SO_REUSEADDR)
reuseport = SO_REUSEADDR|SO_REUSEPORT;
} else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
struct ifaddr *ifa;
sin6->sin6_port = 0;
if ((ifa = ifa_ifwithaddr((struct sockaddr *)sin6)) == 0) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EADDRNOTAVAIL);
}
if (ifa != NULL) {
IFA_LOCK_SPIN(ifa);
if (((struct in6_ifaddr *)ifa)->ia6_flags &
(IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) {
IFA_UNLOCK(ifa);
IFA_REMREF(ifa);
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EADDRNOTAVAIL);
}
outif = ifa->ifa_ifp->if_index;
IFA_UNLOCK(ifa);
IFA_REMREF(ifa);
}
}
if (lport) {
struct inpcb *t;
if (ntohs(lport) < IPV6PORT_RESERVED) {
cred = kauth_cred_proc_ref(p);
error = priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT, 0);
kauth_cred_unref(&cred);
if (error != 0) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EACCES);
}
}
if (so->so_uid &&
!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
t = in6_pcblookup_local_and_cleanup(pcbinfo,
&sin6->sin6_addr, lport,
INPLOOKUP_WILDCARD);
if (t &&
(!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
!IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) ||
(t->inp_socket->so_options &
SO_REUSEPORT) == 0) &&
(so->so_uid != t->inp_socket->so_uid) &&
((t->inp_socket->so_flags & SOF_REUSESHAREUID) == 0)) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return (EADDRINUSE);
}
if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
struct sockaddr_in sin;
in6_sin6_2_sin(&sin, sin6);
t = in_pcblookup_local_and_cleanup(pcbinfo,
sin.sin_addr, lport,
INPLOOKUP_WILDCARD);
if (t && (t->inp_socket->so_options & SO_REUSEPORT) == 0 &&
(so->so_uid !=
t->inp_socket->so_uid) &&
(ntohl(t->inp_laddr.s_addr) !=
INADDR_ANY ||
INP_SOCKAF(so) ==
INP_SOCKAF(t->inp_socket))) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return (EADDRINUSE);
}
}
}
t = in6_pcblookup_local_and_cleanup(pcbinfo, &sin6->sin6_addr,
lport, wild);
if (t && (reuseport & t->inp_socket->so_options) == 0) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return(EADDRINUSE);
}
if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
struct sockaddr_in sin;
in6_sin6_2_sin(&sin, sin6);
t = in_pcblookup_local_and_cleanup(pcbinfo, sin.sin_addr,
lport, wild);
if (t &&
(reuseport & t->inp_socket->so_options)
== 0 &&
(ntohl(t->inp_laddr.s_addr)
!= INADDR_ANY ||
INP_SOCKAF(so) ==
INP_SOCKAF(t->inp_socket))) {
lck_rw_done(pcbinfo->mtx);
socket_lock(so, 0);
return (EADDRINUSE);
}
}
}
inp->in6p_laddr = sin6->sin6_addr;
inp->in6p_last_outif = outif;
}
socket_lock(so, 0);
if (lport == 0) {
int e;
if ((e = in6_pcbsetport(&inp->in6p_laddr, inp, p, 1)) != 0) {
lck_rw_done(pcbinfo->mtx);
return(e);
}
}
else {
inp->inp_lport = lport;
if (in_pcbinshash(inp, 1) != 0) {
inp->in6p_laddr = in6addr_any;
inp->inp_lport = 0;
inp->in6p_last_outif = 0;
lck_rw_done(pcbinfo->mtx);
return (EAGAIN);
}
}
lck_rw_done(pcbinfo->mtx);
sflt_notify(so, sock_evt_bound, NULL);
return(0);
}
int
in6_pcbladdr(struct inpcb *inp, struct sockaddr *nam,
struct in6_addr *plocal_addr6, unsigned int *poutif)
{
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
struct in6_addr *addr6 = NULL;
struct in6_addr src_storage;
int error = 0;
unsigned int ifscope;
if (nam->sa_len != sizeof (*sin6))
return (EINVAL);
if (sin6->sin6_family != AF_INET6)
return (EAFNOSUPPORT);
if (sin6->sin6_port == 0)
return (EADDRNOTAVAIL);
if (in6_embedscope(&sin6->sin6_addr, sin6, inp, NULL, NULL) != 0)
return EINVAL;
if (in6_ifaddrs) {
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
sin6->sin6_addr = in6addr_loopback;
}
ifscope = (inp->inp_flags & INP_BOUND_IF) ?
inp->inp_boundif : IFSCOPE_NONE;
addr6 = in6_selectsrc(sin6, inp->in6p_outputopts, inp,
&inp->in6p_route, NULL, &src_storage, ifscope, &error);
if (addr6 == 0) {
if (error == 0)
error = EADDRNOTAVAIL;
return(error);
}
if (poutif != NULL) {
struct rtentry *rt;
if ((rt = inp->in6p_route.ro_rt) != NULL)
*poutif = rt->rt_ifp->if_index;
else
*poutif = 0;
}
*plocal_addr6 = *addr6;
return(0);
}
int
in6_pcbconnect(
struct inpcb *inp,
struct sockaddr *nam,
struct proc *p)
{
struct in6_addr addr6;
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
struct inpcb *pcb;
int error;
unsigned int outif = 0;
if ((error = in6_pcbladdr(inp, nam, &addr6, &outif)) != 0)
return(error);
socket_unlock(inp->inp_socket, 0);
pcb = in6_pcblookup_hash(inp->inp_pcbinfo, &sin6->sin6_addr,
sin6->sin6_port,
IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)
? &addr6 : &inp->in6p_laddr,
inp->inp_lport, 0, NULL);
socket_lock(inp->inp_socket, 0);
if (pcb != NULL) {
in_pcb_checkstate(pcb, WNT_RELEASE, pcb == inp ? 1 : 0);
return (EADDRINUSE);
}
if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
if (inp->inp_lport == 0) {
error = in6_pcbbind(inp, (struct sockaddr *)0, p);
if (error)
return (error);
}
inp->in6p_laddr = addr6;
inp->in6p_last_outif = outif;
}
if (!lck_rw_try_lock_exclusive(inp->inp_pcbinfo->mtx)) {
socket_unlock(inp->inp_socket, 0);
lck_rw_lock_exclusive(inp->inp_pcbinfo->mtx);
socket_lock(inp->inp_socket, 0);
}
inp->in6p_faddr = sin6->sin6_addr;
inp->inp_fport = sin6->sin6_port;
inp->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK;
if (inp->in6p_flags & IN6P_AUTOFLOWLABEL)
inp->in6p_flowinfo |=
(htonl(ip6_flow_seq++) & IPV6_FLOWLABEL_MASK);
in_pcbrehash(inp);
lck_rw_done(inp->inp_pcbinfo->mtx);
return (0);
}
void
in6_pcbdisconnect(
struct inpcb *inp)
{
if (!lck_rw_try_lock_exclusive(inp->inp_pcbinfo->mtx)) {
socket_unlock(inp->inp_socket, 0);
lck_rw_lock_exclusive(inp->inp_pcbinfo->mtx);
socket_lock(inp->inp_socket, 0);
}
bzero((caddr_t)&inp->in6p_faddr, sizeof(inp->in6p_faddr));
inp->inp_fport = 0;
inp->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK;
in_pcbrehash(inp);
lck_rw_done(inp->inp_pcbinfo->mtx);
if (inp->inp_socket->so_state & SS_NOFDREF)
in6_pcbdetach(inp);
}
void
in6_pcbdetach(
struct inpcb *inp)
{
struct socket *so = inp->inp_socket;
struct inpcbinfo *ipi = inp->inp_pcbinfo;
#if IPSEC
if (inp->in6p_sp != NULL) {
ipsec6_delete_pcbpolicy(inp);
}
#endif
if (in_pcb_checkstate(inp, WNT_STOPUSING, 1) != WNT_STOPUSING)
printf("in6_pcbdetach so=%p can't be marked dead ok\n", so);
inp->inp_state = INPCB_STATE_DEAD;
if ((so->so_flags & SOF_PCBCLEARING) == 0) {
struct ip_moptions *imo;
struct ip6_moptions *im6o;
inp->inp_vflag = 0;
so->so_flags |= SOF_PCBCLEARING;
inp->inp_gencnt = ++ipi->ipi_gencnt;
if (inp->in6p_options)
m_freem(inp->in6p_options);
ip6_freepcbopts(inp->in6p_outputopts);
if (inp->in6p_route.ro_rt) {
rtfree(inp->in6p_route.ro_rt);
inp->in6p_route.ro_rt = NULL;
}
if (inp->inp_options)
(void)m_free(inp->inp_options);
im6o = inp->in6p_moptions;
inp->in6p_moptions = NULL;
if (im6o != NULL)
IM6O_REMREF(im6o);
imo = inp->inp_moptions;
inp->inp_moptions = NULL;
if (imo != NULL)
IMO_REMREF(imo);
}
}
struct sockaddr *
in6_sockaddr(
in_port_t port,
struct in6_addr *addr_p)
{
struct sockaddr_in6 *sin6;
MALLOC(sin6, struct sockaddr_in6 *, sizeof *sin6, M_SONAME, M_WAITOK);
if (sin6 == NULL)
return NULL;
bzero(sin6, sizeof *sin6);
sin6->sin6_family = AF_INET6;
sin6->sin6_len = sizeof(*sin6);
sin6->sin6_port = port;
sin6->sin6_addr = *addr_p;
if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
sin6->sin6_scope_id = ntohs(sin6->sin6_addr.s6_addr16[1]);
else
sin6->sin6_scope_id = 0;
if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
sin6->sin6_addr.s6_addr16[1] = 0;
return (struct sockaddr *)sin6;
}
struct sockaddr *
in6_v4mapsin6_sockaddr(
in_port_t port,
struct in_addr *addr_p)
{
struct sockaddr_in sin;
struct sockaddr_in6 *sin6_p;
bzero(&sin, sizeof sin);
sin.sin_family = AF_INET;
sin.sin_len = sizeof(sin);
sin.sin_port = port;
sin.sin_addr = *addr_p;
MALLOC(sin6_p, struct sockaddr_in6 *, sizeof *sin6_p, M_SONAME,
M_WAITOK);
if (sin6_p == NULL)
return NULL;
in6_sin_2_v4mapsin6(&sin, sin6_p);
return (struct sockaddr *)sin6_p;
}
int
in6_setsockaddr(
struct socket *so,
struct sockaddr **nam)
{
struct inpcb *inp;
struct in6_addr addr;
in_port_t port;
inp = sotoinpcb(so);
if (!inp) {
return EINVAL;
}
port = inp->inp_lport;
addr = inp->in6p_laddr;
*nam = in6_sockaddr(port, &addr);
if (*nam == NULL)
return ENOBUFS;
return 0;
}
int
in6_setpeeraddr(
struct socket *so,
struct sockaddr **nam)
{
struct inpcb *inp;
struct in6_addr addr;
in_port_t port;
inp = sotoinpcb(so);
if (!inp) {
return EINVAL;
}
port = inp->inp_fport;
addr = inp->in6p_faddr;
*nam = in6_sockaddr(port, &addr);
if (*nam == NULL)
return ENOBUFS;
return 0;
}
int
in6_mapped_sockaddr(struct socket *so, struct sockaddr **nam)
{
struct inpcb *inp = sotoinpcb(so);
int error;
if (inp == NULL)
return EINVAL;
if (inp->inp_vflag & INP_IPV4) {
error = in_setsockaddr(so, nam);
if (error == 0)
error = in6_sin_2_v4mapsin6_in_sock(nam);
} else {
error = in6_setsockaddr(so, nam);
}
return error;
}
int
in6_mapped_peeraddr(struct socket *so, struct sockaddr **nam)
{
struct inpcb *inp = sotoinpcb(so);
int error;
if (inp == NULL)
return EINVAL;
if (inp->inp_vflag & INP_IPV4) {
error = in_setpeeraddr(so, nam);
if (error == 0)
error = in6_sin_2_v4mapsin6_in_sock(nam);
} else {
error = in6_setpeeraddr(so, nam);
}
return error;
}
void
in6_pcbnotify(pcbinfo, dst, fport_arg, src, lport_arg, cmd, cmdarg, notify)
struct inpcbinfo *pcbinfo;
struct sockaddr *dst;
const struct sockaddr *src;
u_int fport_arg, lport_arg;
int cmd;
void *cmdarg;
void (*notify)(struct inpcb *, int);
{
struct inpcb *inp, *ninp;
struct sockaddr_in6 sa6_src, *sa6_dst;
u_short fport = fport_arg, lport = lport_arg;
u_int32_t flowinfo;
int errno;
struct inpcbhead *head = pcbinfo->listhead;
if ((unsigned)cmd > PRC_NCMDS || dst->sa_family != AF_INET6)
return;
sa6_dst = (struct sockaddr_in6 *)dst;
if (IN6_IS_ADDR_UNSPECIFIED(&sa6_dst->sin6_addr))
return;
sa6_src = (src == NULL) ? sa6_any : *(const struct sockaddr_in6 *)src;
flowinfo = sa6_src.sin6_flowinfo;
if (PRC_IS_REDIRECT(cmd) || cmd == PRC_HOSTDEAD) {
fport = 0;
lport = 0;
bzero((caddr_t)&sa6_src.sin6_addr, sizeof(sa6_src.sin6_addr));
if (cmd != PRC_HOSTDEAD)
notify = in6_rtchange;
}
errno = inet6ctlerrmap[cmd];
lck_rw_lock_shared(pcbinfo->mtx);
for (inp = LIST_FIRST(head); inp != NULL; inp = ninp) {
ninp = LIST_NEXT(inp, inp_list);
if ((inp->inp_vflag & INP_IPV6) == 0)
continue;
if (cmd == PRC_MSGSIZE && (inp->inp_flags & IN6P_MTU) != 0 &&
(IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) ||
IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, &sa6_dst->sin6_addr))) {
ip6_notify_pmtu(inp, (struct sockaddr_in6 *)dst,
(u_int32_t *)cmdarg);
}
if (lport == 0 && fport == 0 && flowinfo &&
inp->inp_socket != NULL &&
flowinfo == (inp->in6p_flowinfo & IPV6_FLOWLABEL_MASK) &&
IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, &sa6_src.sin6_addr))
goto do_notify;
else if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr,
&sa6_dst->sin6_addr) ||
inp->inp_socket == 0 ||
(lport && inp->inp_lport != lport) ||
(!IN6_IS_ADDR_UNSPECIFIED(&sa6_src.sin6_addr) &&
!IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr,
&sa6_src.sin6_addr)) ||
(fport && inp->inp_fport != fport))
continue;
do_notify:
if (notify) {
if (in_pcb_checkstate(inp, WNT_ACQUIRE, 0) == WNT_STOPUSING)
continue;
socket_lock(inp->inp_socket, 1);
(*notify)(inp, errno);
(void)in_pcb_checkstate(inp, WNT_RELEASE, 1);
socket_unlock(inp->inp_socket, 1);
}
}
lck_rw_done(pcbinfo->mtx);
}
struct inpcb *
in6_pcblookup_local(
struct inpcbinfo *pcbinfo,
struct in6_addr *laddr,
u_int lport_arg,
int wild_okay)
{
struct inpcb *inp;
int matchwild = 3, wildcard;
u_short lport = lport_arg;
if (!wild_okay) {
struct inpcbhead *head;
head = &pcbinfo->hashbase[INP_PCBHASH(INADDR_ANY, lport, 0,
pcbinfo->hashmask)];
LIST_FOREACH(inp, head, inp_hash) {
if ((inp->inp_vflag & INP_IPV6) == 0)
continue;
if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) &&
IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) &&
inp->inp_lport == lport) {
return (inp);
}
}
return (NULL);
} else {
struct inpcbporthead *porthash;
struct inpcbport *phd;
struct inpcb *match = NULL;
porthash = &pcbinfo->porthashbase[INP_PCBPORTHASH(lport,
pcbinfo->porthashmask)];
LIST_FOREACH(phd, porthash, phd_hash) {
if (phd->phd_port == lport)
break;
}
if (phd != NULL) {
LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) {
wildcard = 0;
if ((inp->inp_vflag & INP_IPV6) == 0)
continue;
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr))
wildcard++;
if (!IN6_IS_ADDR_UNSPECIFIED(
&inp->in6p_laddr)) {
if (IN6_IS_ADDR_UNSPECIFIED(laddr))
wildcard++;
else if (!IN6_ARE_ADDR_EQUAL(
&inp->in6p_laddr, laddr))
continue;
} else {
if (!IN6_IS_ADDR_UNSPECIFIED(laddr))
wildcard++;
}
if (wildcard < matchwild) {
match = inp;
matchwild = wildcard;
if (matchwild == 0) {
break;
}
}
}
}
return (match);
}
}
void
in6_losing(
struct inpcb *in6p)
{
struct rtentry *rt;
struct rt_addrinfo info;
if ((rt = in6p->in6p_route.ro_rt) != NULL) {
in6p->in6p_route.ro_rt = NULL;
RT_LOCK(rt);
bzero((caddr_t)&info, sizeof(info));
info.rti_info[RTAX_DST] =
(struct sockaddr *)&in6p->in6p_route.ro_dst;
info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
info.rti_info[RTAX_NETMASK] = rt_mask(rt);
rt_missmsg(RTM_LOSING, &info, rt->rt_flags, 0);
if (rt->rt_flags & RTF_DYNAMIC) {
rt->rt_flags |= RTF_CONDEMNED;
RT_UNLOCK(rt);
(void) rtrequest(RTM_DELETE, rt_key(rt),
rt->rt_gateway, rt_mask(rt), rt->rt_flags, NULL);
} else {
RT_UNLOCK(rt);
}
rtfree(rt);
}
}
void
in6_rtchange(
struct inpcb *inp,
__unused int errno)
{
if (inp->in6p_route.ro_rt) {
rtfree(inp->in6p_route.ro_rt);
inp->in6p_route.ro_rt = 0;
}
}
int
in6_pcblookup_hash_exists(
struct inpcbinfo *pcbinfo,
struct in6_addr *faddr,
u_int fport_arg,
struct in6_addr *laddr,
u_int lport_arg,
int wildcard,
uid_t *uid,
gid_t *gid,
__unused struct ifnet *ifp)
{
struct inpcbhead *head;
struct inpcb *inp;
u_short fport = fport_arg, lport = lport_arg;
int faith;
int found;
#if defined(NFAITH) && NFAITH > 0
faith = faithprefix(laddr);
#else
faith = 0;
#endif
*uid = UID_MAX;
*gid = GID_MAX;
lck_rw_lock_shared(pcbinfo->mtx);
head = &pcbinfo->hashbase[INP_PCBHASH(faddr->s6_addr32[3] ,
lport, fport,
pcbinfo->hashmask)];
LIST_FOREACH(inp, head, inp_hash) {
if ((inp->inp_vflag & INP_IPV6) == 0)
continue;
if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) &&
IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) &&
inp->inp_fport == fport &&
inp->inp_lport == lport) {
if ((found = (inp->inp_socket != NULL))) {
*uid = inp->inp_socket->so_uid;
*gid = inp->inp_socket->so_gid;
}
lck_rw_done(pcbinfo->mtx);
return (found);
}
}
if (wildcard) {
struct inpcb *local_wild = NULL;
head = &pcbinfo->hashbase[INP_PCBHASH(INADDR_ANY, lport, 0,
pcbinfo->hashmask)];
LIST_FOREACH(inp, head, inp_hash) {
if ((inp->inp_vflag & INP_IPV6) == 0)
continue;
if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) &&
inp->inp_lport == lport) {
if (faith && (inp->inp_flags & INP_FAITH) == 0)
continue;
if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr,
laddr)) {
if ((found = (inp->inp_socket != NULL))) {
*uid = inp->inp_socket->so_uid;
*gid = inp->inp_socket->so_gid;
}
lck_rw_done(pcbinfo->mtx);
return (found);
}
else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
local_wild = inp;
}
}
if (local_wild) {
if ((found = (local_wild->inp_socket != NULL))) {
*uid = local_wild->inp_socket->so_uid;
*gid = local_wild->inp_socket->so_gid;
}
lck_rw_done(pcbinfo->mtx);
return (found);
}
}
lck_rw_done(pcbinfo->mtx);
return (0);
}
struct inpcb *
in6_pcblookup_hash(
struct inpcbinfo *pcbinfo,
struct in6_addr *faddr,
u_int fport_arg,
struct in6_addr *laddr,
u_int lport_arg,
int wildcard,
__unused struct ifnet *ifp)
{
struct inpcbhead *head;
struct inpcb *inp;
u_short fport = fport_arg, lport = lport_arg;
int faith;
#if defined(NFAITH) && NFAITH > 0
faith = faithprefix(laddr);
#else
faith = 0;
#endif
lck_rw_lock_shared(pcbinfo->mtx);
head = &pcbinfo->hashbase[INP_PCBHASH(faddr->s6_addr32[3] ,
lport, fport,
pcbinfo->hashmask)];
LIST_FOREACH(inp, head, inp_hash) {
if ((inp->inp_vflag & INP_IPV6) == 0)
continue;
if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) &&
IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) &&
inp->inp_fport == fport &&
inp->inp_lport == lport) {
if (in_pcb_checkstate(inp, WNT_ACQUIRE, 0) != WNT_STOPUSING) {
lck_rw_done(pcbinfo->mtx);
return (inp);
}
else {
lck_rw_done(pcbinfo->mtx);
return(NULL);
}
}
}
if (wildcard) {
struct inpcb *local_wild = NULL;
head = &pcbinfo->hashbase[INP_PCBHASH(INADDR_ANY, lport, 0,
pcbinfo->hashmask)];
LIST_FOREACH(inp, head, inp_hash) {
if ((inp->inp_vflag & INP_IPV6) == 0)
continue;
if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) &&
inp->inp_lport == lport) {
if (faith && (inp->inp_flags & INP_FAITH) == 0)
continue;
if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr,
laddr)) {
if (in_pcb_checkstate(inp, WNT_ACQUIRE, 0) != WNT_STOPUSING) {
lck_rw_done(pcbinfo->mtx);
return (inp);
}
else {
lck_rw_done(pcbinfo->mtx);
return(NULL);
}
}
else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
local_wild = inp;
}
}
if (local_wild && in_pcb_checkstate(local_wild, WNT_ACQUIRE, 0) != WNT_STOPUSING) {
lck_rw_done(pcbinfo->mtx);
return (local_wild);
}
else {
lck_rw_done(pcbinfo->mtx);
return (NULL);
}
}
lck_rw_done(pcbinfo->mtx);
return (NULL);
}
void
init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m)
{
struct ip6_hdr *ip;
ip = mtod(m, struct ip6_hdr *);
bzero(sin6, sizeof(*sin6));
sin6->sin6_len = sizeof(*sin6);
sin6->sin6_family = AF_INET6;
sin6->sin6_addr = ip->ip6_src;
if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
sin6->sin6_addr.s6_addr16[1] = 0;
sin6->sin6_scope_id =
(m->m_pkthdr.rcvif && IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
? m->m_pkthdr.rcvif->if_index : 0;
return;
}