#if defined(__FreeBSD__) && __FreeBSD__ >= 3
#include "opt_inet.h"
#endif
#if defined(__NetBSD__) || defined (__APPLE__)
# ifdef _KERNEL
# define KERNEL
# endif
#endif
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#if defined(__FreeBSD__) || defined (__APPLE__)
#include <sys/sysctl.h>
#endif
#include <sys/mbuf.h>
#if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
#include <sys/malloc.h>
#endif
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/domain.h>
#include <sys/protosw.h>
#include <sys/errno.h>
#ifdef __NetBSD__
#include <sys/proc.h>
#include <sys/queue.h>
#endif
#ifdef __FreeBSD__
#if __FreeBSD__ >= 3
#include <machine/ipl.h>
#else
#include <machine/spl.h>
#endif
#endif
#include <net/raw_cb.h>
#include <net/route.h>
#include <net/pfkeyv2.h>
#include <netkey/keydb.h>
#include <netkey/key.h>
#include <netkey/keysock.h>
#include <netkey/key_debug.h>
struct sockaddr key_dst = { 2, PF_KEY, };
struct sockaddr key_src = { 2, PF_KEY, };
struct sockproto key_proto = { PF_KEY, PF_KEY_V2 };
static int key_sendup0 __P((struct rawcb *, struct mbuf *, int));
struct pfkeystat pfkeystat;
#if !(defined(__FreeBSD__) && __FreeBSD__ >= 3) && !defined(__APPLE__)
#ifndef __NetBSD__
int
key_usrreq(so, req, m, nam, control)
register struct socket *so;
int req;
struct mbuf *m, *nam, *control;
#else
int
key_usrreq(so, req, m, nam, control, p)
register struct socket *so;
int req;
struct mbuf *m, *nam, *control;
struct proc *p;
#endif
{
register int error = 0;
register struct keycb *kp = (struct keycb *)sotorawcb(so);
int s;
#ifdef __NetBSD__
s = splsoftnet();
#else
s = splnet();
#endif
if (req == PRU_ATTACH) {
kp = (struct keycb *)_MALLOC(sizeof(*kp), M_PCB, M_WAITOK);
so->so_pcb = (caddr_t)kp;
if (so->so_pcb)
bzero(so->so_pcb, sizeof(*kp));
}
if (req == PRU_DETACH && kp) {
int af = kp->kp_raw.rcb_proto.sp_protocol;
if (af == PF_KEY)
key_cb.key_count--;
key_cb.any_count--;
key_freereg(so);
}
#ifndef __NetBSD__
error = raw_usrreq(so, req, m, nam, control);
#else
error = raw_usrreq(so, req, m, nam, control, p);
#endif
m = control = NULL;
kp = (struct keycb *)sotorawcb(so);
if (req == PRU_ATTACH && kp) {
int af = kp->kp_raw.rcb_proto.sp_protocol;
if (error) {
#if IPSEC_DEBUG
printf("key_usrreq: key_usrreq results %d\n", error);
#endif
pfkeystat.sockerr++;
_FREE((caddr_t)kp, M_PCB);
so->so_pcb = (caddr_t) 0;
splx(s);
return(error);
}
kp->kp_promisc = kp->kp_registered = 0;
if (af == PF_KEY)
key_cb.key_count++;
key_cb.any_count++;
#ifndef __bsdi__
kp->kp_raw.rcb_laddr = &key_src;
kp->kp_raw.rcb_faddr = &key_dst;
#else
{
struct mbuf *m, *n;
MGET(m, M_WAITOK, MT_DATA);
if (!m) {
error = ENOBUFS;
pfkeystat.in_nomem++;
_FREE((caddr_t)kp, M_PCB);
so->so_pcb = (caddr_t) 0;
splx(s);
return(error);
}
MGET(n, M_WAITOK, MT_DATA);
if (!n) {
error = ENOBUFS;
m_freem(m);
pfkeystat.in_nomem++;
_FREE((caddr_t)kp, M_PCB);
so->so_pcb = (caddr_t) 0;
splx(s);
return(error);
}
m->m_len = sizeof(key_src);
kp->kp_raw.rcb_laddr = mtod(m, struct sockaddr *);
bcopy(&key_src, kp->kp_raw.rcb_laddr, sizeof(key_src));
n->m_len = sizeof(key_dst);
kp->kp_raw.rcb_faddr = mtod(n, struct sockaddr *);
bcopy(&key_dst, kp->kp_raw.rcb_faddr, sizeof(key_dst));
}
#endif
soisconnected(so);
so->so_options |= SO_USELOOPBACK;
}
splx(s);
return(error);
}
#endif
int
key_output(m, so)
register struct mbuf *m;
struct socket *so;
{
struct sadb_msg *msg = NULL;
int len, error = 0;
int s;
int target;
if (m == 0)
panic("key_output: NULL pointer was passed.\n");
pfkeystat.out_total++;
pfkeystat.out_bytes += m->m_pkthdr.len;
len = m->m_pkthdr.len;
if (len < sizeof(struct sadb_msg)) {
#if IPSEC_DEBUG
printf("key_output: Invalid message length.\n");
#endif
pfkeystat.out_tooshort++;
error = EINVAL;
goto end;
}
if (m->m_len < sizeof(struct sadb_msg)) {
if ((m = m_pullup(m, sizeof(struct sadb_msg))) == 0) {
#if IPSEC_DEBUG
printf("key_output: can't pullup mbuf\n");
#endif
pfkeystat.out_nomem++;
error = ENOBUFS;
goto end;
}
}
if ((m->m_flags & M_PKTHDR) == 0)
panic("key_output: not M_PKTHDR ??");
#if defined(IPSEC_DEBUG)
KEYDEBUG(KEYDEBUG_KEY_DUMP, kdebug_mbuf(m));
#endif
msg = mtod(m, struct sadb_msg *);
pfkeystat.out_msgtype[msg->sadb_msg_type]++;
if (len != PFKEY_UNUNIT64(msg->sadb_msg_len)) {
#if IPSEC_DEBUG
printf("key_output: Invalid message length.\n");
#endif
pfkeystat.out_invlen++;
error = EINVAL;
goto end;
}
msg = (struct sadb_msg *)_MALLOC(len, M_SECA, M_WAITOK);
if (msg == NULL) {
#if IPSEC_DEBUG
printf("key_output: No more memory.\n");
#endif
error = ENOBUFS;
pfkeystat.out_nomem++;
goto end;
}
m_copydata(m, 0, len, (caddr_t)msg);
#ifdef __NetBSD__
s = splsoftnet();
#else
s = splnet();
#endif
if ((len = key_parse(&msg, so, &target)) == 0) {
error = 0;
splx(s);
goto end;
}
error = key_sendup(so, msg, len, target);
splx(s);
_FREE(msg, M_SECA);
end:
m_freem(m);
return (error);
}
static int
key_sendup0(rp, m, promisc)
struct rawcb *rp;
struct mbuf *m;
int promisc;
{
if (promisc) {
struct sadb_msg *pmsg;
M_PREPEND(m, sizeof(struct sadb_msg), M_NOWAIT);
if (m && m->m_len < sizeof(struct sadb_msg))
m = m_pullup(m, sizeof(struct sadb_msg));
if (!m) {
#if IPSEC_DEBUG
printf("key_sendup0: cannot pullup\n");
#endif
pfkeystat.in_nomem++;
m_freem(m);
return ENOBUFS;
}
m->m_pkthdr.len += sizeof(*pmsg);
pmsg = mtod(m, struct sadb_msg *);
bzero(pmsg, sizeof(*pmsg));
pmsg->sadb_msg_version = PF_KEY_V2;
pmsg->sadb_msg_type = SADB_X_PROMISC;
pmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
pfkeystat.in_msgtype[pmsg->sadb_msg_type]++;
}
if (!sbappendaddr(&rp->rcb_socket->so_rcv,
(struct sockaddr *)&key_src, m, NULL)) {
#if IPSEC_DEBUG
printf("key_sendup0: sbappendaddr failed\n");
#endif
pfkeystat.in_nomem++;
m_freem(m);
return ENOBUFS;
}
sorwakeup(rp->rcb_socket);
return 0;
}
int
key_sendup(so, msg, len, target)
struct socket *so;
struct sadb_msg *msg;
u_int len;
int target;
{
struct mbuf *m, *n, *mprev;
int tlen;
if (so == 0 || msg == 0)
panic("key_sendup: NULL pointer was passed.\n");
KEYDEBUG(KEYDEBUG_KEY_DUMP,
printf("key_sendup: \n");
kdebug_sadb(msg));
pfkeystat.in_total++;
pfkeystat.in_bytes += len;
pfkeystat.in_msgtype[msg->sadb_msg_type]++;
tlen = len;
m = mprev = NULL;
while (tlen > 0) {
if (tlen == len) {
MGETHDR(n, M_DONTWAIT, MT_DATA);
n->m_len = MHLEN;
} else {
MGET(n, M_DONTWAIT, MT_DATA);
n->m_len = MLEN;
}
if (!n) {
pfkeystat.in_nomem++;
return ENOBUFS;
}
if (tlen >= MCLBYTES) {
MCLGET(n, M_DONTWAIT);
if ((n->m_flags & M_EXT) == 0) {
m_free(n);
m_freem(m);
pfkeystat.in_nomem++;
return ENOBUFS;
}
n->m_len = MCLBYTES;
}
if (tlen < n->m_len)
n->m_len = tlen;
n->m_next = NULL;
if (m == NULL)
m = mprev = n;
else {
mprev->m_next = n;
mprev = n;
}
tlen -= n->m_len;
n = NULL;
}
m->m_pkthdr.len = len;
m->m_pkthdr.rcvif = NULL;
m_copyback(m, 0, len, (caddr_t)msg);
pfkeystat.in_total--;
pfkeystat.in_bytes -= len;
pfkeystat.in_msgtype[msg->sadb_msg_type]--;
return key_sendup_mbuf(so, m, target);
}
int
key_sendup_mbuf(so, m, target)
struct socket *so;
struct mbuf *m;
int target;
{
struct mbuf *n;
struct keycb *kp;
int sendup;
struct rawcb *rp;
int error;
if (so == NULL || m == NULL)
panic("key_sendup_mbuf: NULL pointer was passed.\n");
pfkeystat.in_total++;
pfkeystat.in_bytes += m->m_pkthdr.len;
if (m->m_len < sizeof(struct sadb_msg)) {
#if 1
m = m_pullup(m, sizeof(struct sadb_msg));
if (m == NULL) {
pfkeystat.in_nomem++;
return ENOBUFS;
}
#else
#endif
}
if (m->m_len >= sizeof(struct sadb_msg)) {
struct sadb_msg *msg;
msg = mtod(m, struct sadb_msg *);
pfkeystat.in_msgtype[msg->sadb_msg_type]++;
}
#ifdef __NetBSD__
for (rp = rawcb.lh_first; rp; rp = rp->rcb_list.le_next)
#elif defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
LIST_FOREACH(rp, &rawcb_list, list)
#else
for (rp = rawcb.rcb_next; rp != &rawcb; rp = rp->rcb_next)
#endif
{
if (rp->rcb_proto.sp_family != PF_KEY)
continue;
if (rp->rcb_proto.sp_protocol
&& rp->rcb_proto.sp_protocol != PF_KEY_V2) {
continue;
}
kp = (struct keycb *)rp;
if (((struct keycb *)rp)->kp_promisc) {
if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
(void)key_sendup0(rp, n, 1);
n = NULL;
}
}
if (sotorawcb(so) == rp)
continue;
sendup = 0;
switch (target) {
case KEY_SENDUP_ONE:
if (sotorawcb(so) == rp)
sendup++;
break;
case KEY_SENDUP_ALL:
sendup++;
break;
case KEY_SENDUP_REGISTERED:
if (kp->kp_registered)
sendup++;
break;
}
pfkeystat.in_msgtarget[target]++;
if (!sendup)
continue;
if ((n = m_copy(m, 0, (int)M_COPYALL)) == NULL) {
#if IPSEC_DEBUG
printf("key_sendup: m_copy fail\n");
#endif
m_freem(m);
pfkeystat.in_nomem++;
return ENOBUFS;
}
if ((error = key_sendup0(rp, n, 0)) != 0) {
m_freem(m);
return error;
}
n = NULL;
}
error = key_sendup0(sotorawcb(so), m, 0);
m = NULL;
return error;
}
#if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
static int
key_abort(struct socket *so)
{
int s, error;
s = splnet();
error = raw_usrreqs.pru_abort(so);
splx(s);
return error;
}
static int
key_attach(struct socket *so, int proto, struct proc *p)
{
struct keycb *kp;
int s, error;
if (sotorawcb(so) != 0)
return EISCONN;
kp = (struct keycb *)_MALLOC(sizeof *kp, M_PCB, M_WAITOK);
if (kp == 0)
return ENOBUFS;
bzero(kp, sizeof *kp);
s = splnet();
so->so_pcb = (caddr_t)kp;
error = raw_usrreqs.pru_attach(so, proto, p);
kp = (struct keycb *)sotorawcb(so);
if (error) {
_FREE(kp, M_PCB);
so->so_pcb = (caddr_t) 0;
splx(s);
printf("key_usrreq: key_usrreq results %d\n", error);
return error;
}
kp->kp_promisc = kp->kp_registered = 0;
if (kp->kp_raw.rcb_proto.sp_protocol == PF_KEY)
key_cb.key_count++;
key_cb.any_count++;
kp->kp_raw.rcb_laddr = &key_src;
kp->kp_raw.rcb_faddr = &key_dst;
soisconnected(so);
so->so_options |= SO_USELOOPBACK;
splx(s);
return 0;
}
static int
key_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
{
int s, error;
s = splnet();
error = raw_usrreqs.pru_bind(so, nam, p);
splx(s);
return error;
}
static int
key_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
{
int s, error;
s = splnet();
error = raw_usrreqs.pru_connect(so, nam, p);
splx(s);
return error;
}
static int
key_detach(struct socket *so)
{
struct keycb *kp = (struct keycb *)sotorawcb(so);
int s, error;
s = splnet();
if (kp != 0) {
if (kp->kp_raw.rcb_proto.sp_protocol
== PF_KEY)
key_cb.key_count--;
key_cb.any_count--;
key_freereg(so);
}
error = raw_usrreqs.pru_detach(so);
splx(s);
return error;
}
static int
key_disconnect(struct socket *so)
{
int s, error;
s = splnet();
error = raw_usrreqs.pru_disconnect(so);
splx(s);
return error;
}
static int
key_peeraddr(struct socket *so, struct sockaddr **nam)
{
int s, error;
s = splnet();
error = raw_usrreqs.pru_peeraddr(so, nam);
splx(s);
return error;
}
static int
key_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
struct mbuf *control, struct proc *p)
{
int s, error;
s = splnet();
error = raw_usrreqs.pru_send(so, flags, m, nam, control, p);
splx(s);
return error;
}
static int
key_shutdown(struct socket *so)
{
int s, error;
s = splnet();
error = raw_usrreqs.pru_shutdown(so);
splx(s);
return error;
}
static int
key_sockaddr(struct socket *so, struct sockaddr **nam)
{
int s, error;
s = splnet();
error = raw_usrreqs.pru_sockaddr(so, nam);
splx(s);
return error;
}
struct pr_usrreqs key_usrreqs = {
key_abort, pru_accept_notsupp, key_attach, key_bind,
key_connect,
pru_connect2_notsupp, pru_control_notsupp, key_detach,
key_disconnect, pru_listen_notsupp, key_peeraddr,
pru_rcvd_notsupp,
pru_rcvoob_notsupp, key_send, pru_sense_null, key_shutdown,
key_sockaddr, sosend, soreceive, sopoll
};
#endif
#if __FreeBSD__ || defined (__APPLE__)
SYSCTL_NODE(_net, PF_KEY, key, CTLFLAG_RW, 0, "Key Family");
#endif
extern struct domain keydomain;
struct protosw keysw[] = {
{ SOCK_RAW, &keydomain, PF_KEY_V2, PR_ATOMIC|PR_ADDR,
0, key_output, raw_ctlinput, 0,
0,
raw_init, 0, 0, 0,
0, &key_usrreqs
}
};
struct domain keydomain =
{ PF_KEY, "key", key_init, 0, 0,
keysw, 0,
0,0,
sizeof(struct key_cb), 0
};
DOMAIN_SET(key);