fix two bugs in the PFKEY interface:

1) RFC2367 says in 2.3.3 Address Extension: "All non-address
   information in the sockaddrs, such as sin_zero for AF_INET sockaddrs,
   and sin6_flowinfo for AF_INET6 sockaddrs, MUST be zeroed out."
   the IPSEC_NAT_T code was expecting the port information it needs
   to be conveyed in the sockaddr instead of exclusively by
   SADB_X_EXT_NAT_T_SPORT and SADB_X_EXT_NAT_T_DPORT,
   and was not zeroing out the port information in the non-nat-traversal
   case.
   Since it was expecting the port information to reside in the sockaddr
   it could get away with (re)setting the ports after starting to use them.
   -> Set the natt ports before setting the SA mature.

2) RFC3947 has two Original Address fields, initiator and responder,
   so we need SADB_X_EXT_NAT_T_OAI and SADB_X_EXT_NAT_T_OAR and not just
   SADB_X_EXT_NAT_T_OA

The change has been created using vanhu's patch for FreeBSD as reference.

Note that establishing actual nat-t sessions has not yet been tested.

Likely fixes the following:
PR bin/41757
PR net/42592
PR net/42606
This commit is contained in:
spz 2010-09-05 06:52:53 +00:00
parent 374c4263ae
commit 445e6acd20
3 changed files with 361 additions and 184 deletions

View File

@ -1,4 +1,4 @@
/* $NetBSD: pfkeyv2.h,v 1.26 2008/02/20 17:05:53 matt Exp $ */
/* $NetBSD: pfkeyv2.h,v 1.27 2010/09/05 06:52:53 spz Exp $ */
/* $KAME: pfkeyv2.h,v 1.36 2003/07/25 09:33:37 itojun Exp $ */
/*
@ -310,14 +310,16 @@ struct sadb_x_nat_t_frag {
#define SADB_X_EXT_NAT_T_TYPE 20
#define SADB_X_EXT_NAT_T_SPORT 21
#define SADB_X_EXT_NAT_T_DPORT 22
#define SADB_X_EXT_NAT_T_OA 23
#define SADB_X_EXT_NAT_T_FRAG 24
#define SADB_X_EXT_NAT_T_OA 23 /* compat */
#define SADB_X_EXT_NAT_T_OAI 23
#define SADB_X_EXT_NAT_T_OAR 24
#define SADB_X_EXT_NAT_T_FRAG 25
#if 0
#define SADB_X_EXT_TAG 25 /* KAME */
#define SADB_X_EXT_SA3 26 /* KAME */
#define SADB_X_EXT_PACKET 27 /* KAME */
#endif
#define SADB_EXT_MAX 24
#define SADB_EXT_MAX 25
#define SADB_SATYPE_UNSPEC 0
#define SADB_SATYPE_AH 2

View File

@ -1,4 +1,4 @@
/* $NetBSD: key.c,v 1.63 2010/01/31 00:43:38 hubertf Exp $ */
/* $NetBSD: key.c,v 1.64 2010/09/05 06:52:53 spz Exp $ */
/* $FreeBSD: src/sys/netipsec/key.c,v 1.3.2.3 2004/02/14 22:23:23 bms Exp $ */
/* $KAME: key.c,v 1.191 2001/06/27 10:46:49 sakane Exp $ */
@ -32,7 +32,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: key.c,v 1.63 2010/01/31 00:43:38 hubertf Exp $");
__KERNEL_RCSID(0, "$NetBSD: key.c,v 1.64 2010/09/05 06:52:53 spz Exp $");
/*
* This code is referd to RFC 2367
@ -192,7 +192,8 @@ static const int minsize[] = {
sizeof(struct sadb_x_nat_t_type), /* SADB_X_EXT_NAT_T_TYPE */
sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_SPORT */
sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_DPORT */
sizeof(struct sadb_address), /* SADB_X_EXT_NAT_T_OA */
sizeof(struct sadb_address), /* SADB_X_EXT_NAT_T_OAI */
sizeof(struct sadb_address), /* SADB_X_EXT_NAT_T_OAR */
sizeof(struct sadb_x_nat_t_frag), /* SADB_X_EXT_NAT_T_FRAG */
};
static const int maxsize[] = {
@ -219,7 +220,8 @@ static const int maxsize[] = {
sizeof(struct sadb_x_nat_t_type), /* SADB_X_EXT_NAT_T_TYPE */
sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_SPORT */
sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_DPORT */
0, /* SADB_X_EXT_NAT_T_OA */
0, /* SADB_X_EXT_NAT_T_OAI */
0, /* SADB_X_EXT_NAT_T_OAR */
sizeof(struct sadb_x_nat_t_frag), /* SADB_X_EXT_NAT_T_FRAG */
};
@ -465,6 +467,9 @@ static u_int32_t key_do_getnewspi (struct sadb_spirange *,
#ifdef IPSEC_NAT_T
static int key_handle_natt_info (struct secasvar *,
const struct sadb_msghdr *);
static int key_set_natt_ports (union sockaddr_union *,
union sockaddr_union *,
const struct sadb_msghdr *);
#endif
static int key_update (struct socket *, struct mbuf *,
const struct sadb_msghdr *);
@ -2574,7 +2579,7 @@ key_nat_map(struct socket *so, struct mbuf *m,
struct sadb_x_nat_t_type *type;
struct sadb_x_nat_t_port *sport;
struct sadb_x_nat_t_port *dport;
struct sadb_address *addr;
struct sadb_address *iaddr, *raddr;
struct sadb_x_nat_t_frag *frag;
/* sanity check */
@ -2594,8 +2599,14 @@ key_nat_map(struct socket *so, struct mbuf *m,
return key_senderror(so, m, EINVAL);
}
if ((mhp->ext[SADB_X_EXT_NAT_T_OA] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OA] < sizeof(*addr))) {
if ((mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OAI] < sizeof(*iaddr))) {
ipseclog((LOG_DEBUG, "key_nat_map: invalid message\n"));
return key_senderror(so, m, EINVAL);
}
if ((mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OAR] < sizeof(*raddr))) {
ipseclog((LOG_DEBUG, "key_nat_map: invalid message\n"));
return key_senderror(so, m, EINVAL);
}
@ -2609,7 +2620,8 @@ key_nat_map(struct socket *so, struct mbuf *m,
type = (struct sadb_x_nat_t_type *)mhp->ext[SADB_X_EXT_NAT_T_TYPE];
sport = (struct sadb_x_nat_t_port *)mhp->ext[SADB_X_EXT_NAT_T_SPORT];
dport = (struct sadb_x_nat_t_port *)mhp->ext[SADB_X_EXT_NAT_T_DPORT];
addr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OA];
iaddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAI];
raddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAR];
frag = (struct sadb_x_nat_t_frag *) mhp->ext[SADB_X_EXT_NAT_T_FRAG];
printf("sadb_nat_map called\n");
@ -3522,8 +3534,9 @@ key_setdumpsa(struct secasvar *sav, u_int8_t type, u_int8_t satype,
SADB_EXT_KEY_ENCRYPT, SADB_EXT_IDENTITY_SRC,
SADB_EXT_IDENTITY_DST, SADB_EXT_SENSITIVITY,
#ifdef IPSEC_NAT_T
SADB_X_EXT_NAT_T_TYPE, SADB_X_EXT_NAT_T_SPORT,
SADB_X_EXT_NAT_T_DPORT, SADB_X_EXT_NAT_T_OA,
SADB_X_EXT_NAT_T_TYPE,
SADB_X_EXT_NAT_T_SPORT, SADB_X_EXT_NAT_T_DPORT,
SADB_X_EXT_NAT_T_OAI, SADB_X_EXT_NAT_T_OAR,
SADB_X_EXT_NAT_T_FRAG,
#endif
@ -3623,7 +3636,8 @@ key_setdumpsa(struct secasvar *sav, u_int8_t type, u_int8_t satype,
goto fail;
break;
case SADB_X_EXT_NAT_T_OA:
case SADB_X_EXT_NAT_T_OAI:
case SADB_X_EXT_NAT_T_OAR:
case SADB_X_EXT_NAT_T_FRAG:
continue;
#endif
@ -4212,9 +4226,20 @@ key_cmpsaidx(
* If NAT-T is enabled, check ports for tunnel mode.
* Don't do it for transport mode, as there is no
* port information available in the SP.
* Also don't check ports if they are set to zero
* in the SPD: This means we have a non-generated
* SPD which can't know UDP ports.
*/
#ifdef IPSEC_NAT_T
if (saidx1->mode == IPSEC_MODE_TUNNEL)
if (saidx1->mode == IPSEC_MODE_TUNNEL &&
((((const struct sockaddr *)(&saidx1->src))->sa_family == AF_INET &&
((const struct sockaddr *)(&saidx1->dst))->sa_family == AF_INET &&
((const struct sockaddr_in *)(&saidx1->src))->sin_port &&
((const struct sockaddr_in *)(&saidx1->dst))->sin_port) ||
(((const struct sockaddr *)(&saidx1->src))->sa_family == AF_INET6 &&
((const struct sockaddr *)(&saidx1->dst))->sa_family == AF_INET6 &&
((const struct sockaddr_in6 *)(&saidx1->src))->sin6_port &&
((const struct sockaddr_in6 *)(&saidx1->dst))->sin6_port)))
chkport = 1;
#endif
@ -4908,6 +4933,11 @@ key_getspi(struct socket *so, struct mbuf *m,
dst0 + 1, &saidx)) != 0)
return key_senderror(so, m, EINVAL);
#ifdef IPSEC_NAT_T
if ((error = key_set_natt_ports(&saidx.src, &saidx.dst, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif
/* SPI allocation */
spi = key_do_getnewspi((struct sadb_spirange *)mhp->ext[SADB_EXT_SPIRANGE],
&saidx);
@ -5092,8 +5122,10 @@ key_handle_natt_info(struct secasvar *sav,
const struct sadb_msghdr *mhp)
{
if (mhp->ext[SADB_X_EXT_NAT_T_OA] != NULL)
printf("update: NAT-T OA present\n");
if (mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL)
ipseclog((LOG_DEBUG,"update: NAT-T OAi present\n"));
if (mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL)
ipseclog((LOG_DEBUG,"update: NAT-T OAr present\n"));
if ((mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL) &&
(mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL) &&
@ -5101,7 +5133,7 @@ key_handle_natt_info(struct secasvar *sav,
struct sadb_x_nat_t_type *type;
struct sadb_x_nat_t_port *sport;
struct sadb_x_nat_t_port *dport;
struct sadb_address *addr;
struct sadb_address *iaddr, *raddr;
struct sadb_x_nat_t_frag *frag;
if ((mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type)) ||
@ -5112,8 +5144,14 @@ key_handle_natt_info(struct secasvar *sav,
return -1;
}
if ((mhp->ext[SADB_X_EXT_NAT_T_OA] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OA] < sizeof(*addr))) {
if ((mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OAI] < sizeof(*iaddr))) {
ipseclog((LOG_DEBUG, "key_update: invalid message\n"));
return -1;
}
if ((mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OAR] < sizeof(*raddr))) {
ipseclog((LOG_DEBUG, "key_update: invalid message\n"));
return -1;
}
@ -5130,11 +5168,19 @@ key_handle_natt_info(struct secasvar *sav,
mhp->ext[SADB_X_EXT_NAT_T_SPORT];
dport = (struct sadb_x_nat_t_port *)
mhp->ext[SADB_X_EXT_NAT_T_DPORT];
addr = (struct sadb_address *)
mhp->ext[SADB_X_EXT_NAT_T_OA];
iaddr = (struct sadb_address *)
mhp->ext[SADB_X_EXT_NAT_T_OAI];
raddr = (struct sadb_address *)
mhp->ext[SADB_X_EXT_NAT_T_OAR];
frag = (struct sadb_x_nat_t_frag *)
mhp->ext[SADB_X_EXT_NAT_T_FRAG];
ipseclog((LOG_DEBUG,
"key_update: type %d, sport = %d, dport = %d\n",
type->sadb_x_nat_t_type_type,
sport->sadb_x_nat_t_port_port,
dport->sadb_x_nat_t_port_port));
if (type)
sav->natt_type = type->sadb_x_nat_t_type_type;
if (sport)
@ -5151,6 +5197,48 @@ key_handle_natt_info(struct secasvar *sav,
return 0;
}
/* Just update the IPSEC_NAT_T ports if present */
static int
key_set_natt_ports(union sockaddr_union *src, union sockaddr_union *dst,
const struct sadb_msghdr *mhp)
{
if (mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL)
ipseclog((LOG_DEBUG,"update: NAT-T OAi present\n"));
if (mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL)
ipseclog((LOG_DEBUG,"update: NAT-T OAr present\n"));
if ((mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL) &&
(mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL) &&
(mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL)) {
struct sadb_x_nat_t_type *type;
struct sadb_x_nat_t_port *sport;
struct sadb_x_nat_t_port *dport;
if ((mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type)) ||
(mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport)) ||
(mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport))) {
ipseclog((LOG_DEBUG, "key_update: "
"invalid message.\n"));
return -1;
}
sport = (struct sadb_x_nat_t_port *)
mhp->ext[SADB_X_EXT_NAT_T_SPORT];
dport = (struct sadb_x_nat_t_port *)
mhp->ext[SADB_X_EXT_NAT_T_DPORT];
if (sport)
key_porttosaddr(src,
sport->sadb_x_nat_t_port_port);
if (dport)
key_porttosaddr(dst,
dport->sadb_x_nat_t_port_port);
}
return 0;
}
#endif
@ -5227,6 +5315,10 @@ key_update(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
dst0 + 1, &saidx)) != 0)
return key_senderror(so, m, EINVAL);
#ifdef IPSEC_NAT_T
if ((error = key_set_natt_ports(&saidx.src, &saidx.dst, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif
/* get a SA header */
if ((sah = key_getsah(&saidx)) == NULL) {
@ -5288,17 +5380,17 @@ key_update(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
return key_senderror(so, m, error);
}
#ifdef IPSEC_NAT_T
if ((error = key_handle_natt_info(sav,mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif /* IPSEC_NAT_T */
/* check SA values to be mature. */
if ((mhp->msg->sadb_msg_errno = key_mature(sav)) != 0) {
KEY_FREESAV(&sav);
return key_senderror(so, m, 0);
}
#ifdef IPSEC_NAT_T
if ((error = key_handle_natt_info(sav,mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif /* IPSEC_NAT_T */
{
struct mbuf *n;
@ -5425,6 +5517,11 @@ key_add(struct socket *so, struct mbuf *m,
dst0 + 1, &saidx)) != 0)
return key_senderror(so, m, EINVAL);
#ifdef IPSEC_NAT_T
if ((error = key_set_natt_ports(&saidx.src, &saidx.dst, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif
/* get a SA header */
if ((newsah = key_getsah(&saidx)) == NULL) {
/* create a new SA header */
@ -5452,17 +5549,17 @@ key_add(struct socket *so, struct mbuf *m,
return key_senderror(so, m, error);
}
#ifdef IPSEC_NAT_T
if ((error = key_handle_natt_info(newsav, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif /* IPSEC_NAT_T */
/* check SA values to be mature. */
if ((error = key_mature(newsav)) != 0) {
KEY_FREESAV(&newsav);
return key_senderror(so, m, error);
}
#ifdef IPSEC_NAT_T
if ((error = key_handle_natt_info(newsav, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif /* IPSEC_NAT_T */
/*
* don't call key_freesav() here, as we would like to keep the SA
* in the database on success.
@ -5653,6 +5750,11 @@ key_delete(struct socket *so, struct mbuf *m,
dst0 + 1, &saidx)) != 0)
return key_senderror(so, m, EINVAL);
#ifdef IPSEC_NAT_T
if ((error = key_set_natt_ports(&saidx.src, &saidx.dst, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif
/* get a SA header */
LIST_FOREACH(sah, &sahtree, chain) {
if (sah->state == SADB_SASTATE_DEAD)
@ -5718,6 +5820,11 @@ key_delete_all(struct socket *so, struct mbuf *m,
dst0 + 1, &saidx)) != 0)
return key_senderror(so, m, EINVAL);
#ifdef IPSEC_NAT_T
if ((error = key_set_natt_ports(&saidx.src, &saidx.dst, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif
LIST_FOREACH(sah, &sahtree, chain) {
if (sah->state == SADB_SASTATE_DEAD)
continue;
@ -5828,6 +5935,11 @@ key_get(struct socket *so, struct mbuf *m,
dst0 + 1, &saidx)) != 0)
return key_senderror(so, m, EINVAL);
#ifdef IPSEC_NAT_T
if ((error = key_set_natt_ports(&saidx.src, &saidx.dst, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif
/* get a SA header */
LIST_FOREACH(sah, &sahtree, chain) {
if (sah->state == SADB_SASTATE_DEAD)
@ -6503,6 +6615,11 @@ key_acquire2(struct socket *so, struct mbuf *m,
dst0 + 1, &saidx)) != 0)
return key_senderror(so, m, EINVAL);
#ifdef IPSEC_NAT_T
if ((error = key_set_natt_ports(&saidx.src, &saidx.dst, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif
/* get a SA index */
LIST_FOREACH(sah, &sahtree, chain) {
if (sah->state == SADB_SASTATE_DEAD)
@ -7523,7 +7640,8 @@ key_align(struct mbuf *m, struct sadb_msghdr *mhp)
case SADB_X_EXT_NAT_T_TYPE:
case SADB_X_EXT_NAT_T_SPORT:
case SADB_X_EXT_NAT_T_DPORT:
case SADB_X_EXT_NAT_T_OA:
case SADB_X_EXT_NAT_T_OAI:
case SADB_X_EXT_NAT_T_OAR:
case SADB_X_EXT_NAT_T_FRAG:
#endif
/* duplicate check */

View File

@ -1,4 +1,4 @@
/* $NetBSD: key.c,v 1.177 2010/03/03 01:13:26 pooka Exp $ */
/* $NetBSD: key.c,v 1.178 2010/09/05 06:52:53 spz Exp $ */
/* $KAME: key.c,v 1.310 2003/09/08 02:23:44 itojun Exp $ */
/*
@ -35,7 +35,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: key.c,v 1.177 2010/03/03 01:13:26 pooka Exp $");
__KERNEL_RCSID(0, "$NetBSD: key.c,v 1.178 2010/09/05 06:52:53 spz Exp $");
#include "opt_inet.h"
#include "opt_ipsec.h"
@ -201,7 +201,8 @@ static const int minsize[] = {
sizeof(struct sadb_x_nat_t_type), /* SADB_X_EXT_NAT_T_TYPE */
sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_SPORT */
sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_DPORT */
sizeof(struct sadb_address), /* SADB_X_EXT_NAT_T_OA */
sizeof(struct sadb_address), /* SADB_X_EXT_NAT_T_OAI */
sizeof(struct sadb_address), /* SADB_X_EXT_NAT_T_OAR */
sizeof(struct sadb_x_nat_t_frag),/* SADB_X_EXT_NAT_T_FRAG */
#ifdef SADB_X_EXT_TAG
sizeof(struct sadb_x_tag), /* SADB_X_TAG */
@ -231,7 +232,8 @@ static const int maxsize[] = {
sizeof(struct sadb_x_nat_t_type), /* SADB_X_EXT_NAT_T_TYPE */
sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_SPORT */
sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_DPORT */
0, /* SADB_X_EXT_NAT_T_OA */
0, /* SADB_X_EXT_NAT_T_OAI */
0, /* SADB_X_EXT_NAT_T_OAR */
sizeof(struct sadb_x_nat_t_frag), /* SADB_X_EXT_NAT_T_FRAG */
#ifdef SADB_X_EXT_TAG
sizeof(struct sadb_x_tag), /* SADB_X_TAG */
@ -360,6 +362,13 @@ static int key_spddump(struct socket *, struct mbuf *,
#ifdef IPSEC_NAT_T
static int key_nat_map(struct socket *, struct mbuf *,
const struct sadb_msghdr *);
static int key_handle_natt_info (struct secasvar *,
const struct sadb_msghdr *);
static int key_set_natt_ports (struct sockaddr *, struct sockaddr *,
const struct sadb_msghdr *);
#define KEY_SET_NATT_PORTS(saddr, daddr, saidx) \
key_set_natt_ports((struct sockaddr *)(saddr), \
(struct sockaddr *)(daddr), (saidx))
#endif
static struct mbuf *key_setspddump(int *);
static u_int key_getspreqmsglen(struct secpolicy *);
@ -2371,7 +2380,7 @@ key_nat_map(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
struct sadb_x_nat_t_type *type;
struct sadb_x_nat_t_port *sport;
struct sadb_x_nat_t_port *dport;
struct sadb_address *addr;
struct sadb_address *iaddr, *raddr;
struct sadb_x_nat_t_frag *frag;
/* sanity check */
@ -2391,8 +2400,14 @@ key_nat_map(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
return key_senderror(so, m, EINVAL);
}
if ((mhp->ext[SADB_X_EXT_NAT_T_OA] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OA] < sizeof(*addr))) {
if ((mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OAI] < sizeof(*iaddr))) {
ipseclog((LOG_DEBUG, "key_nat_map: invalid message\n"));
return key_senderror(so, m, EINVAL);
}
if ((mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OAR] < sizeof(*raddr))) {
ipseclog((LOG_DEBUG, "key_nat_map: invalid message\n"));
return key_senderror(so, m, EINVAL);
}
@ -2406,7 +2421,8 @@ key_nat_map(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
type = (struct sadb_x_nat_t_type *)mhp->ext[SADB_X_EXT_NAT_T_TYPE];
sport = (struct sadb_x_nat_t_port *)mhp->ext[SADB_X_EXT_NAT_T_SPORT];
dport = (struct sadb_x_nat_t_port *)mhp->ext[SADB_X_EXT_NAT_T_DPORT];
addr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OA];
iaddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAI];
raddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAR];
frag = (struct sadb_x_nat_t_frag *) mhp->ext[SADB_X_EXT_NAT_T_FRAG];
printf("sadb_nat_map called\n");
@ -2418,6 +2434,137 @@ key_nat_map(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
return 0;
}
/* Handle IPSEC_NAT_T info if present */
static int
key_handle_natt_info(struct secasvar *sav,
const struct sadb_msghdr *mhp)
{
if (mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL)
ipseclog((LOG_DEBUG,"update: NAT-T OAi present\n"));
if (mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL)
ipseclog((LOG_DEBUG,"update: NAT-T OAr present\n"));
if ((mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL) &&
(mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL) &&
(mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL)) {
struct sadb_x_nat_t_type *type;
struct sadb_x_nat_t_port *sport;
struct sadb_x_nat_t_port *dport;
struct sadb_address *iaddr, *raddr;
struct sadb_x_nat_t_frag *frag;
if ((mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type)) ||
(mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport)) ||
(mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport))) {
ipseclog((LOG_DEBUG, "key_update: "
"invalid message.\n"));
return -1;
}
if ((mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OAI] < sizeof(*iaddr))) {
ipseclog((LOG_DEBUG, "key_update: invalid message\n"));
return -1;
}
if ((mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OAR] < sizeof(*raddr))) {
ipseclog((LOG_DEBUG, "key_update: invalid message\n"));
return -1;
}
if ((mhp->ext[SADB_X_EXT_NAT_T_FRAG] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_FRAG] < sizeof(*frag))) {
ipseclog((LOG_DEBUG, "key_update: invalid message\n"));
return -1;
}
type = (struct sadb_x_nat_t_type *)
mhp->ext[SADB_X_EXT_NAT_T_TYPE];
sport = (struct sadb_x_nat_t_port *)
mhp->ext[SADB_X_EXT_NAT_T_SPORT];
dport = (struct sadb_x_nat_t_port *)
mhp->ext[SADB_X_EXT_NAT_T_DPORT];
iaddr = (struct sadb_address *)
mhp->ext[SADB_X_EXT_NAT_T_OAI];
raddr = (struct sadb_address *)
mhp->ext[SADB_X_EXT_NAT_T_OAR];
frag = (struct sadb_x_nat_t_frag *)
mhp->ext[SADB_X_EXT_NAT_T_FRAG];
ipseclog((LOG_DEBUG,
"key_update: type %d, sport = %d, dport = %d\n",
type->sadb_x_nat_t_type_type,
sport->sadb_x_nat_t_port_port,
dport->sadb_x_nat_t_port_port));
if (type)
sav->natt_type = type->sadb_x_nat_t_type_type;
if (sport)
KEY_PORTTOSADDR(&sav->sah->saidx.src,
sport->sadb_x_nat_t_port_port);
if (dport)
KEY_PORTTOSADDR(&sav->sah->saidx.dst,
dport->sadb_x_nat_t_port_port);
if (frag)
sav->esp_frag = frag->sadb_x_nat_t_frag_fraglen;
else
sav->esp_frag = IP_MAXPACKET;
}
return 0;
}
/* Just update the IPSEC_NAT_T ports if present */
static int
key_set_natt_ports(struct sockaddr *src, struct sockaddr *dst,
const struct sadb_msghdr *mhp)
{
if (mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL)
ipseclog((LOG_DEBUG,"update: NAT-T OAi present\n"));
if (mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL)
ipseclog((LOG_DEBUG,"update: NAT-T OAr present\n"));
if ((mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL) &&
(mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL) &&
(mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL)) {
struct sadb_x_nat_t_type *type;
struct sadb_x_nat_t_port *sport;
struct sadb_x_nat_t_port *dport;
if ((mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type)) ||
(mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport)) ||
(mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport))) {
ipseclog((LOG_DEBUG, "key_update: "
"invalid message.\n"));
return -1;
}
sport = (struct sadb_x_nat_t_port *)
mhp->ext[SADB_X_EXT_NAT_T_SPORT];
dport = (struct sadb_x_nat_t_port *)
mhp->ext[SADB_X_EXT_NAT_T_DPORT];
if (sport)
KEY_PORTTOSADDR(src,
sport->sadb_x_nat_t_port_port);
else
KEY_PORTTOSADDR(src, 0);
if (dport)
KEY_PORTTOSADDR(dst,
dport->sadb_x_nat_t_port_port);
else
KEY_PORTTOSADDR(dst, 0);
} else {
KEY_PORTTOSADDR(src, 0);
KEY_PORTTOSADDR(dst, 0);
}
return 0;
}
#endif /* IPSEC_NAT_T */
static struct mbuf *
@ -3494,8 +3641,9 @@ key_setdumpsa(struct secasvar *sav, u_int8_t type, u_int8_t satype, u_int32_t se
SADB_EXT_KEY_ENCRYPT, SADB_EXT_IDENTITY_SRC,
SADB_EXT_IDENTITY_DST, SADB_EXT_SENSITIVITY,
#ifdef IPSEC_NAT_T
SADB_X_EXT_NAT_T_TYPE, SADB_X_EXT_NAT_T_SPORT,
SADB_X_EXT_NAT_T_DPORT, SADB_X_EXT_NAT_T_OA,
SADB_X_EXT_NAT_T_TYPE,
SADB_X_EXT_NAT_T_SPORT, SADB_X_EXT_NAT_T_DPORT,
SADB_X_EXT_NAT_T_OAI, SADB_X_EXT_NAT_T_OAR,
SADB_X_EXT_NAT_T_FRAG,
#endif
};
@ -3594,7 +3742,8 @@ key_setdumpsa(struct secasvar *sav, u_int8_t type, u_int8_t satype, u_int32_t se
goto fail;
break;
case SADB_X_EXT_NAT_T_OA:
case SADB_X_EXT_NAT_T_OAI:
case SADB_X_EXT_NAT_T_OAR:
case SADB_X_EXT_NAT_T_FRAG:
continue;
#endif
@ -4958,8 +5107,11 @@ key_getspi(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
/* If not using NAT-T, make sure port numbers are set to zero. */
#ifndef IPSEC_NAT_T
#ifdef IPSEC_NAT_T
if ((error = KEY_SET_NATT_PORTS(&saidx.src, &saidx.dst, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#else
/* If not using NAT-T, make sure the port numbers are zero. */
KEY_PORTTOSADDR(&saidx.src, 0);
KEY_PORTTOSADDR(&saidx.dst, 0);
#endif
@ -5217,8 +5369,11 @@ key_update(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
/* If not using NAT-T, make sure if port number is zero. */
#ifndef IPSEC_NAT_T
#ifdef IPSEC_NAT_T
if ((error = KEY_SET_NATT_PORTS(&saidx.src, &saidx.dst, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#else
/* If not using NAT-T, make sure the port numbers are zero. */
KEY_PORTTOSADDR(&saidx.src, 0);
KEY_PORTTOSADDR(&saidx.dst, 0);
#endif
@ -5283,74 +5438,17 @@ key_update(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
return key_senderror(so, m, error);
}
#ifdef IPSEC_NAT_T
if ((error = key_handle_natt_info(sav,mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif /* IPSEC_NAT_T */
/* check SA values to be mature. */
if ((error = key_mature(sav)) != 0) {
key_freesav(sav);
return key_senderror(so, m, error);
}
#ifdef IPSEC_NAT_T
/*
* Handle NAT-T info if present
*/
if (mhp->ext[SADB_X_EXT_NAT_T_OA] != NULL)
printf("update: NAT-T OA present\n");
if ((mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL) &&
(mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL) &&
(mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL)) {
struct sadb_x_nat_t_type *type;
struct sadb_x_nat_t_port *sport;
struct sadb_x_nat_t_port *dport;
struct sadb_address *addr;
struct sadb_x_nat_t_frag *frag;
if ((mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type)) ||
(mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport)) ||
(mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport))) {
ipseclog((LOG_DEBUG, "key_update: "
"invalid message.\n"));
return key_senderror(so, m, EINVAL);
}
if ((mhp->ext[SADB_X_EXT_NAT_T_OA] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OA] < sizeof(*addr))) {
ipseclog((LOG_DEBUG, "key_update: invalid message\n"));
return key_senderror(so, m, EINVAL);
}
if ((mhp->ext[SADB_X_EXT_NAT_T_FRAG] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_FRAG] < sizeof(*frag))) {
ipseclog((LOG_DEBUG, "key_update: invalid message\n"));
return key_senderror(so, m, EINVAL);
}
type = (struct sadb_x_nat_t_type *)
mhp->ext[SADB_X_EXT_NAT_T_TYPE];
sport = (struct sadb_x_nat_t_port *)
mhp->ext[SADB_X_EXT_NAT_T_SPORT];
dport = (struct sadb_x_nat_t_port *)
mhp->ext[SADB_X_EXT_NAT_T_DPORT];
addr = (struct sadb_address *)
mhp->ext[SADB_X_EXT_NAT_T_OA];
frag = (struct sadb_x_nat_t_frag *)
mhp->ext[SADB_X_EXT_NAT_T_FRAG];
if (type)
sav->natt_type = type->sadb_x_nat_t_type_type;
if (sport)
KEY_PORTTOSADDR(&sav->sah->saidx.src,
sport->sadb_x_nat_t_port_port);
if (dport)
KEY_PORTTOSADDR(&sav->sah->saidx.dst,
dport->sadb_x_nat_t_port_port);
if (frag)
sav->esp_frag = frag->sadb_x_nat_t_frag_fraglen;
else
sav->esp_frag = IP_MAXPACKET;
}
#endif /* IPSEC_NAT_T */
{
struct mbuf *n;
@ -5473,8 +5571,11 @@ key_add(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
/* If not using NAT-T, make sure if port number is zero. */
#ifndef IPSEC_NAT_T
#ifdef IPSEC_NAT_T
if ((error = KEY_SET_NATT_PORTS(&saidx.src, &saidx.dst, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#else
/* If not using NAT-T, make sure the port numbers are zero. */
KEY_PORTTOSADDR(&saidx.src, 0);
KEY_PORTTOSADDR(&saidx.dst, 0);
#endif
@ -5506,74 +5607,17 @@ key_add(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
return key_senderror(so, m, error);
}
#ifdef IPSEC_NAT_T
if ((error = key_handle_natt_info(newsav,mhp)) != 0)
return key_senderror(so, m, EINVAL);
#endif /* IPSEC_NAT_T */
/* check SA values to be mature. */
if ((error = key_mature(newsav)) != 0) {
key_freesav(newsav);
return key_senderror(so, m, error);
}
#ifdef IPSEC_NAT_T
/*
* Handle NAT-T info if present
*/
if (mhp->ext[SADB_X_EXT_NAT_T_OA] != NULL)
printf("add: NAT-T OA present\n");
if ((mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL) &&
(mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL) &&
(mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL)) {
struct sadb_x_nat_t_type *type;
struct sadb_x_nat_t_port *sport;
struct sadb_x_nat_t_port *dport;
struct sadb_address *addr;
struct sadb_x_nat_t_frag *frag;
if ((mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type)) ||
(mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport)) ||
(mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport))) {
ipseclog((LOG_DEBUG, "key_add: "
"invalid message.\n"));
return key_senderror(so, m, EINVAL);
}
if ((mhp->ext[SADB_X_EXT_NAT_T_OA] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_OA] < sizeof(*addr))) {
ipseclog((LOG_DEBUG, "key_add: invalid message\n"));
return key_senderror(so, m, EINVAL);
}
if ((mhp->ext[SADB_X_EXT_NAT_T_FRAG] != NULL) &&
(mhp->extlen[SADB_X_EXT_NAT_T_FRAG] < sizeof(*frag))) {
ipseclog((LOG_DEBUG, "key_update: invalid message\n"));
return key_senderror(so, m, EINVAL);
}
type = (struct sadb_x_nat_t_type *)
mhp->ext[SADB_X_EXT_NAT_T_TYPE];
sport = (struct sadb_x_nat_t_port *)
mhp->ext[SADB_X_EXT_NAT_T_SPORT];
dport = (struct sadb_x_nat_t_port *)
mhp->ext[SADB_X_EXT_NAT_T_DPORT];
addr = (struct sadb_address *)
mhp->ext[SADB_X_EXT_NAT_T_OA];
frag = (struct sadb_x_nat_t_frag *)
mhp->ext[SADB_X_EXT_NAT_T_FRAG];
if (type)
newsav->natt_type = type->sadb_x_nat_t_type_type;
if (sport)
KEY_PORTTOSADDR(&newsav->sah->saidx.src,
sport->sadb_x_nat_t_port_port);
if (dport)
KEY_PORTTOSADDR(&newsav->sah->saidx.dst,
dport->sadb_x_nat_t_port_port);
if (frag)
newsav->esp_frag = frag->sadb_x_nat_t_frag_fraglen;
else
newsav->esp_frag = IP_MAXPACKET;
}
#endif /* IPSEC_NAT_T */
/*
* don't call key_freesav() here, as we would like to keep the SA
* in the database on success.
@ -5765,8 +5809,11 @@ key_delete(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
/* If not using NAT-T, make sure if port number is zero. */
#ifndef IPSEC_NAT_T
#ifdef IPSEC_NAT_T
if (KEY_SET_NATT_PORTS(&saidx.src, &saidx.dst, mhp) != 0)
return key_senderror(so, m, EINVAL);
#else
/* If not using NAT-T, make sure the port numbers are zero. */
KEY_PORTTOSADDR(&saidx.src, 0);
KEY_PORTTOSADDR(&saidx.dst, 0);
#endif
@ -5839,8 +5886,11 @@ key_delete_all(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp,
KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
/* If not using NAT-T, make sure if port number is zero. */
#ifndef IPSEC_NAT_T
#ifdef IPSEC_NAT_T
if (KEY_SET_NATT_PORTS(&saidx.src, &saidx.dst, mhp) != 0)
return key_senderror(so, m, EINVAL);
#else
/* If not using NAT-T, make sure the port numbers are zero. */
KEY_PORTTOSADDR(&saidx.src, 0);
KEY_PORTTOSADDR(&saidx.dst, 0);
#endif
@ -5956,8 +6006,11 @@ key_get(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
/* If not using NAT-T, make sure if port number is zero. */
#ifndef IPSEC_NAT_T
#ifdef IPSEC_NAT_T
if (KEY_SET_NATT_PORTS(&saidx.src, &saidx.dst, mhp) != 0)
return key_senderror(so, m, EINVAL);
#else
/* If not using NAT-T, make sure the port numbers are zero. */
KEY_PORTTOSADDR(&saidx.src, 0);
KEY_PORTTOSADDR(&saidx.dst, 0);
#endif
@ -6646,8 +6699,11 @@ key_acquire2(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
/* If not using NAT-T, make sure if port number is zero. */
#ifndef IPSEC_NAT_T
#ifdef IPSEC_NAT_T
if ((error = KEY_SET_NATT_PORTS(&saidx.src, &saidx.dst, mhp)) != 0)
return key_senderror(so, m, EINVAL);
#else
/* If not using NAT-T, make sure the port numbers are zero. */
KEY_PORTTOSADDR(&saidx.src, 0);
KEY_PORTTOSADDR(&saidx.dst, 0);
#endif
@ -7735,7 +7791,8 @@ key_align(struct mbuf *m, struct sadb_msghdr *mhp)
case SADB_X_EXT_NAT_T_TYPE:
case SADB_X_EXT_NAT_T_SPORT:
case SADB_X_EXT_NAT_T_DPORT:
case SADB_X_EXT_NAT_T_OA:
case SADB_X_EXT_NAT_T_OAI:
case SADB_X_EXT_NAT_T_OAR:
case SADB_X_EXT_NAT_T_FRAG:
#endif
#ifdef SADB_X_EXT_TAG