--- /dev/null
+/* $KAME: pfkey.c,v 1.47 2003/10/02 19:52:12 itojun Exp $ */
+
+/*
+ * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <net/pfkeyv2.h>
+#include <netinet/in.h>
+#ifdef HAVE_NETINET6_IPSEC
+# include <netinet6/ipsec.h>
+#else
+# include <netinet/ipsec.h>
+#endif
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+
+#include "ipsec_strerror.h"
+#include "libpfkey.h"
+
+#define CALLOC(size, cast) (cast)calloc(1, (size))
+
+static int findsupportedmap __P((int));
+static int setsupportedmap __P((struct sadb_supported *));
+static struct sadb_alg *findsupportedalg __P((u_int, u_int));
+static int pfkey_send_x1 __P((int, u_int, u_int, u_int, struct sockaddr *,
+ struct sockaddr *, u_int32_t, u_int32_t, u_int, caddr_t,
+ u_int, u_int, u_int, u_int, u_int, u_int32_t, u_int32_t,
+ u_int32_t, u_int32_t, u_int32_t,
+ u_int8_t, u_int16_t, u_int16_t, struct sockaddr *));
+static int pfkey_send_x2 __P((int, u_int, u_int, u_int,
+ struct sockaddr *, struct sockaddr *, u_int32_t));
+static int pfkey_send_x3 __P((int, u_int, u_int));
+static int pfkey_send_x4 __P((int, u_int, struct sockaddr *, u_int,
+ struct sockaddr *, u_int, u_int, u_int64_t, u_int64_t,
+ char *, int, u_int32_t));
+static int pfkey_send_x5 __P((int, u_int, u_int32_t));
+
+static caddr_t pfkey_setsadbmsg __P((caddr_t, caddr_t, u_int, u_int,
+ u_int, u_int32_t, pid_t));
+static caddr_t pfkey_setsadbsa __P((caddr_t, caddr_t, u_int32_t, u_int,
+ u_int, u_int, u_int32_t));
+static caddr_t pfkey_setsadbaddr __P((caddr_t, caddr_t, u_int,
+ struct sockaddr *, u_int, u_int));
+static caddr_t pfkey_setsadbkey __P((caddr_t, caddr_t, u_int, caddr_t, u_int));
+static caddr_t pfkey_setsadblifetime __P((caddr_t, caddr_t, u_int, u_int32_t,
+ u_int32_t, u_int32_t, u_int32_t));
+static caddr_t pfkey_setsadbxsa2 __P((caddr_t, caddr_t, u_int32_t, u_int32_t));
+
+#ifdef SADB_X_EXT_NAT_T_TYPE
+static caddr_t pfkey_set_natt_type __P((caddr_t, caddr_t, u_int, u_int8_t));
+static caddr_t pfkey_set_natt_port __P((caddr_t, caddr_t, u_int, u_int16_t));
+#endif
+
+/*
+ * make and search supported algorithm structure.
+ */
+static struct sadb_supported *ipsec_supported[] = { NULL, NULL, NULL, };
+
+static int supported_map[] = {
+ SADB_SATYPE_AH,
+ SADB_SATYPE_ESP,
+ SADB_X_SATYPE_IPCOMP,
+};
+
+static int
+findsupportedmap(satype)
+ int satype;
+{
+ int i;
+
+ for (i = 0; i < sizeof(supported_map)/sizeof(supported_map[0]); i++)
+ if (supported_map[i] == satype)
+ return i;
+ return -1;
+}
+
+static struct sadb_alg *
+findsupportedalg(satype, alg_id)
+ u_int satype, alg_id;
+{
+ int algno;
+ int tlen;
+ caddr_t p;
+
+ /* validity check */
+ algno = findsupportedmap(satype);
+ if (algno == -1) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return NULL;
+ }
+ if (ipsec_supported[algno] == NULL) {
+ __ipsec_errcode = EIPSEC_DO_GET_SUPP_LIST;
+ return NULL;
+ }
+
+ tlen = ipsec_supported[algno]->sadb_supported_len
+ - sizeof(struct sadb_supported);
+ p = (caddr_t)(ipsec_supported[algno] + 1);
+ while (tlen > 0) {
+ if (tlen < sizeof(struct sadb_alg)) {
+ /* invalid format */
+ break;
+ }
+ if (((struct sadb_alg *)p)->sadb_alg_id == alg_id)
+ return (struct sadb_alg *)p;
+
+ tlen -= sizeof(struct sadb_alg);
+ p += sizeof(struct sadb_alg);
+ }
+
+ __ipsec_errcode = EIPSEC_NOT_SUPPORTED;
+ return NULL;
+}
+
+static int
+setsupportedmap(sup)
+ struct sadb_supported *sup;
+{
+ struct sadb_supported **ipsup;
+
+ switch (sup->sadb_supported_exttype) {
+ case SADB_EXT_SUPPORTED_AUTH:
+ ipsup = &ipsec_supported[findsupportedmap(SADB_SATYPE_AH)];
+ break;
+ case SADB_EXT_SUPPORTED_ENCRYPT:
+ ipsup = &ipsec_supported[findsupportedmap(SADB_SATYPE_ESP)];
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_SATYPE;
+ return -1;
+ }
+
+ if (*ipsup)
+ free(*ipsup);
+
+ *ipsup = malloc(sup->sadb_supported_len);
+ if (!*ipsup) {
+ __ipsec_set_strerror(strerror(errno));
+ return -1;
+ }
+ memcpy(*ipsup, sup, sup->sadb_supported_len);
+
+ return 0;
+}
+
+/*
+ * check key length against algorithm specified.
+ * This function is called with SADB_EXT_SUPPORTED_{AUTH,ENCRYPT} as the
+ * augument, and only calls to ipsec_check_keylen2();
+ * keylen is the unit of bit.
+ * OUT:
+ * -1: invalid.
+ * 0: valid.
+ */
+int
+ipsec_check_keylen(supported, alg_id, keylen)
+ u_int supported;
+ u_int alg_id;
+ u_int keylen;
+{
+ int satype;
+
+ /* validity check */
+ switch (supported) {
+ case SADB_EXT_SUPPORTED_AUTH:
+ satype = SADB_SATYPE_AH;
+ break;
+ case SADB_EXT_SUPPORTED_ENCRYPT:
+ satype = SADB_SATYPE_ESP;
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+
+ return ipsec_check_keylen2(satype, alg_id, keylen);
+}
+
+/*
+ * check key length against algorithm specified.
+ * satype is one of satype defined at pfkeyv2.h.
+ * keylen is the unit of bit.
+ * OUT:
+ * -1: invalid.
+ * 0: valid.
+ */
+int
+ipsec_check_keylen2(satype, alg_id, keylen)
+ u_int satype;
+ u_int alg_id;
+ u_int keylen;
+{
+ struct sadb_alg *alg;
+
+ alg = findsupportedalg(satype, alg_id);
+ if (!alg)
+ return -1;
+
+ if (keylen < alg->sadb_alg_minbits || keylen > alg->sadb_alg_maxbits) {
+ fprintf(stderr, "%d %d %d\n", keylen, alg->sadb_alg_minbits,
+ alg->sadb_alg_maxbits);
+ __ipsec_errcode = EIPSEC_INVAL_KEYLEN;
+ return -1;
+ }
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return 0;
+}
+
+/*
+ * get max/min key length against algorithm specified.
+ * satype is one of satype defined at pfkeyv2.h.
+ * keylen is the unit of bit.
+ * OUT:
+ * -1: invalid.
+ * 0: valid.
+ */
+int
+ipsec_get_keylen(supported, alg_id, alg0)
+ u_int supported, alg_id;
+ struct sadb_alg *alg0;
+{
+ struct sadb_alg *alg;
+ u_int satype;
+
+ /* validity check */
+ if (!alg0) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+
+ switch (supported) {
+ case SADB_EXT_SUPPORTED_AUTH:
+ satype = SADB_SATYPE_AH;
+ break;
+ case SADB_EXT_SUPPORTED_ENCRYPT:
+ satype = SADB_SATYPE_ESP;
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+
+ alg = findsupportedalg(satype, alg_id);
+ if (!alg)
+ return -1;
+
+ memcpy(alg0, alg, sizeof(*alg0));
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return 0;
+}
+
+/*
+ * set the rate for SOFT lifetime against HARD one.
+ * If rate is more than 100 or equal to zero, then set to 100.
+ */
+static u_int soft_lifetime_allocations_rate = PFKEY_SOFT_LIFETIME_RATE;
+static u_int soft_lifetime_bytes_rate = PFKEY_SOFT_LIFETIME_RATE;
+static u_int soft_lifetime_addtime_rate = PFKEY_SOFT_LIFETIME_RATE;
+static u_int soft_lifetime_usetime_rate = PFKEY_SOFT_LIFETIME_RATE;
+
+u_int
+pfkey_set_softrate(type, rate)
+ u_int type, rate;
+{
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+
+ if (rate > 100 || rate == 0)
+ rate = 100;
+
+ switch (type) {
+ case SADB_X_LIFETIME_ALLOCATIONS:
+ soft_lifetime_allocations_rate = rate;
+ return 0;
+ case SADB_X_LIFETIME_BYTES:
+ soft_lifetime_bytes_rate = rate;
+ return 0;
+ case SADB_X_LIFETIME_ADDTIME:
+ soft_lifetime_addtime_rate = rate;
+ return 0;
+ case SADB_X_LIFETIME_USETIME:
+ soft_lifetime_usetime_rate = rate;
+ return 0;
+ }
+
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return 1;
+}
+
+/*
+ * get current rate for SOFT lifetime against HARD one.
+ * ATTENTION: ~0 is returned if invalid type was passed.
+ */
+u_int
+pfkey_get_softrate(type)
+ u_int type;
+{
+ switch (type) {
+ case SADB_X_LIFETIME_ALLOCATIONS:
+ return soft_lifetime_allocations_rate;
+ case SADB_X_LIFETIME_BYTES:
+ return soft_lifetime_bytes_rate;
+ case SADB_X_LIFETIME_ADDTIME:
+ return soft_lifetime_addtime_rate;
+ case SADB_X_LIFETIME_USETIME:
+ return soft_lifetime_usetime_rate;
+ }
+
+ return ~0;
+}
+
+/*
+ * sending SADB_GETSPI message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_getspi(so, satype, mode, src, dst, min, max, reqid, seq)
+ int so;
+ u_int satype, mode;
+ struct sockaddr *src, *dst;
+ u_int32_t min, max, reqid, seq;
+{
+ struct sadb_msg *newmsg;
+ caddr_t ep;
+ int len;
+ int need_spirange = 0;
+ caddr_t p;
+ int plen;
+
+ /* validity check */
+ if (src == NULL || dst == NULL) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+ if (src->sa_family != dst->sa_family) {
+ __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
+ return -1;
+ }
+ if (min > max || (min > 0 && min <= 255)) {
+ __ipsec_errcode = EIPSEC_INVAL_SPI;
+ return -1;
+ }
+ switch (src->sa_family) {
+ case AF_INET:
+ plen = sizeof(struct in_addr) << 3;
+ break;
+ case AF_INET6:
+ plen = sizeof(struct in6_addr) << 3;
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_FAMILY;
+ return -1;
+ }
+
+ /* create new sadb_msg to send. */
+ len = sizeof(struct sadb_msg)
+ + sizeof(struct sadb_x_sa2)
+ + sizeof(struct sadb_address)
+ + PFKEY_ALIGN8(sysdep_sa_len(src))
+ + sizeof(struct sadb_address)
+ + PFKEY_ALIGN8(sysdep_sa_len(dst));
+
+ if (min > 255 && max < ~0) {
+ need_spirange++;
+ len += sizeof(struct sadb_spirange);
+ }
+
+ if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
+ __ipsec_set_strerror(strerror(errno));
+ return -1;
+ }
+ ep = ((caddr_t)newmsg) + len;
+
+ p = pfkey_setsadbmsg((caddr_t)newmsg, ep, SADB_GETSPI,
+ len, satype, seq, getpid());
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+
+ p = pfkey_setsadbxsa2(p, ep, mode, reqid);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+
+ /* set sadb_address for source */
+ p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_SRC, src, plen,
+ IPSEC_ULPROTO_ANY);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+
+ /* set sadb_address for destination */
+ p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_DST, dst, plen,
+ IPSEC_ULPROTO_ANY);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+
+ /* proccessing spi range */
+ if (need_spirange) {
+ struct sadb_spirange spirange;
+
+ if (p + sizeof(spirange) > ep) {
+ free(newmsg);
+ return -1;
+ }
+
+ memset(&spirange, 0, sizeof(spirange));
+ spirange.sadb_spirange_len = PFKEY_UNIT64(sizeof(spirange));
+ spirange.sadb_spirange_exttype = SADB_EXT_SPIRANGE;
+ spirange.sadb_spirange_min = min;
+ spirange.sadb_spirange_max = max;
+
+ memcpy(p, &spirange, sizeof(spirange));
+
+ p += sizeof(spirange);
+ }
+ if (p != ep) {
+ free(newmsg);
+ return -1;
+ }
+
+ /* send message */
+ len = pfkey_send(so, newmsg, len);
+ free(newmsg);
+
+ if (len < 0)
+ return -1;
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return len;
+}
+
+/*
+ * sending SADB_UPDATE message to the kernel.
+ * The length of key material is a_keylen + e_keylen.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_update(so, satype, mode, src, dst, spi, reqid, wsize,
+ keymat, e_type, e_keylen, a_type, a_keylen, flags,
+ l_alloc, l_bytes, l_addtime, l_usetime, seq)
+ int so;
+ u_int satype, mode, wsize;
+ struct sockaddr *src, *dst;
+ u_int32_t spi, reqid;
+ caddr_t keymat;
+ u_int e_type, e_keylen, a_type, a_keylen, flags;
+ u_int32_t l_alloc;
+ u_int64_t l_bytes, l_addtime, l_usetime;
+ u_int32_t seq;
+{
+ int len;
+ if ((len = pfkey_send_x1(so, SADB_UPDATE, satype, mode, src, dst, spi,
+ reqid, wsize,
+ keymat, e_type, e_keylen, a_type, a_keylen, flags,
+ l_alloc, l_bytes, l_addtime, l_usetime, seq,
+ 0, 0, 0, NULL)) < 0)
+ return -1;
+
+ return len;
+}
+
+#ifdef SADB_X_EXT_NAT_T_TYPE
+int
+pfkey_send_update_nat(so, satype, mode, src, dst, spi, reqid, wsize,
+ keymat, e_type, e_keylen, a_type, a_keylen, flags,
+ l_alloc, l_bytes, l_addtime, l_usetime, seq,
+ l_natt_type, l_natt_sport, l_natt_dport, l_natt_oa)
+ int so;
+ u_int satype, mode, wsize;
+ struct sockaddr *src, *dst;
+ u_int32_t spi, reqid;
+ caddr_t keymat;
+ u_int e_type, e_keylen, a_type, a_keylen, flags;
+ u_int32_t l_alloc;
+ u_int64_t l_bytes, l_addtime, l_usetime;
+ u_int32_t seq;
+ u_int8_t l_natt_type;
+ u_int16_t l_natt_sport, l_natt_dport;
+ struct sockaddr *l_natt_oa;
+{
+ int len;
+ if ((len = pfkey_send_x1(so, SADB_UPDATE, satype, mode, src, dst, spi,
+ reqid, wsize,
+ keymat, e_type, e_keylen, a_type, a_keylen, flags,
+ l_alloc, l_bytes, l_addtime, l_usetime, seq,
+ l_natt_type, l_natt_sport, l_natt_dport, l_natt_oa)) < 0)
+ return -1;
+
+ return len;
+}
+#endif
+
+/*
+ * sending SADB_ADD message to the kernel.
+ * The length of key material is a_keylen + e_keylen.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_add(so, satype, mode, src, dst, spi, reqid, wsize,
+ keymat, e_type, e_keylen, a_type, a_keylen, flags,
+ l_alloc, l_bytes, l_addtime, l_usetime, seq)
+ int so;
+ u_int satype, mode, wsize;
+ struct sockaddr *src, *dst;
+ u_int32_t spi, reqid;
+ caddr_t keymat;
+ u_int e_type, e_keylen, a_type, a_keylen, flags;
+ u_int32_t l_alloc;
+ u_int64_t l_bytes, l_addtime, l_usetime;
+ u_int32_t seq;
+{
+ int len;
+ if ((len = pfkey_send_x1(so, SADB_ADD, satype, mode, src, dst, spi,
+ reqid, wsize,
+ keymat, e_type, e_keylen, a_type, a_keylen, flags,
+ l_alloc, l_bytes, l_addtime, l_usetime, seq,
+ 0, 0, 0, NULL)) < 0)
+ return -1;
+
+ return len;
+}
+
+#ifdef SADB_X_EXT_NAT_T_TYPE
+int
+pfkey_send_add_nat(so, satype, mode, src, dst, spi, reqid, wsize,
+ keymat, e_type, e_keylen, a_type, a_keylen, flags,
+ l_alloc, l_bytes, l_addtime, l_usetime, seq,
+ l_natt_type, l_natt_sport, l_natt_dport, l_natt_oa)
+ int so;
+ u_int satype, mode, wsize;
+ struct sockaddr *src, *dst;
+ u_int32_t spi, reqid;
+ caddr_t keymat;
+ u_int e_type, e_keylen, a_type, a_keylen, flags;
+ u_int32_t l_alloc;
+ u_int64_t l_bytes, l_addtime, l_usetime;
+ u_int32_t seq;
+ u_int8_t l_natt_type;
+ u_int16_t l_natt_sport, l_natt_dport;
+ struct sockaddr *l_natt_oa;
+{
+ int len;
+ if ((len = pfkey_send_x1(so, SADB_ADD, satype, mode, src, dst, spi,
+ reqid, wsize,
+ keymat, e_type, e_keylen, a_type, a_keylen, flags,
+ l_alloc, l_bytes, l_addtime, l_usetime, seq,
+ l_natt_type, l_natt_sport, l_natt_dport, l_natt_oa)) < 0)
+ return -1;
+
+ return len;
+}
+#endif
+
+/*
+ * sending SADB_DELETE message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_delete(so, satype, mode, src, dst, spi)
+ int so;
+ u_int satype, mode;
+ struct sockaddr *src, *dst;
+ u_int32_t spi;
+{
+ int len;
+ if ((len = pfkey_send_x2(so, SADB_DELETE, satype, mode, src, dst, spi)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_DELETE without spi to the kernel. This is
+ * the "delete all" request (an extension also present in
+ * Solaris).
+ *
+ * OUT:
+ * positive: success and return length sent
+ * -1 : error occured, and set errno
+ */
+int
+pfkey_send_delete_all(so, satype, mode, src, dst)
+ int so;
+ u_int satype, mode;
+ struct sockaddr *src, *dst;
+{
+ struct sadb_msg *newmsg;
+ int len;
+ caddr_t p;
+ int plen;
+ caddr_t ep;
+
+ /* validity check */
+ if (src == NULL || dst == NULL) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+ if (src->sa_family != dst->sa_family) {
+ __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
+ return -1;
+ }
+ switch (src->sa_family) {
+ case AF_INET:
+ plen = sizeof(struct in_addr) << 3;
+ break;
+ case AF_INET6:
+ plen = sizeof(struct in6_addr) << 3;
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_FAMILY;
+ return -1;
+ }
+
+ /* create new sadb_msg to reply. */
+ len = sizeof(struct sadb_msg)
+ + sizeof(struct sadb_address)
+ + PFKEY_ALIGN8(sysdep_sa_len(src))
+ + sizeof(struct sadb_address)
+ + PFKEY_ALIGN8(sysdep_sa_len(dst));
+
+ if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
+ __ipsec_set_strerror(strerror(errno));
+ return -1;
+ }
+ ep = ((caddr_t)newmsg) + len;
+
+ p = pfkey_setsadbmsg((caddr_t)newmsg, ep, SADB_DELETE, len, satype, 0,
+ getpid());
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_SRC, src, plen,
+ IPSEC_ULPROTO_ANY);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_DST, dst, plen,
+ IPSEC_ULPROTO_ANY);
+ if (!p || p != ep) {
+ free(newmsg);
+ return -1;
+ }
+
+ /* send message */
+ len = pfkey_send(so, newmsg, len);
+ free(newmsg);
+
+ if (len < 0)
+ return -1;
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return len;
+}
+
+/*
+ * sending SADB_GET message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_get(so, satype, mode, src, dst, spi)
+ int so;
+ u_int satype, mode;
+ struct sockaddr *src, *dst;
+ u_int32_t spi;
+{
+ int len;
+ if ((len = pfkey_send_x2(so, SADB_GET, satype, mode, src, dst, spi)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_REGISTER message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_register(so, satype)
+ int so;
+ u_int satype;
+{
+ int len, algno;
+
+ if (satype == PF_UNSPEC) {
+ for (algno = 0;
+ algno < sizeof(supported_map)/sizeof(supported_map[0]);
+ algno++) {
+ if (ipsec_supported[algno]) {
+ free(ipsec_supported[algno]);
+ ipsec_supported[algno] = NULL;
+ }
+ }
+ } else {
+ algno = findsupportedmap(satype);
+ if (algno == -1) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+
+ if (ipsec_supported[algno]) {
+ free(ipsec_supported[algno]);
+ ipsec_supported[algno] = NULL;
+ }
+ }
+
+ if ((len = pfkey_send_x3(so, SADB_REGISTER, satype)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * receiving SADB_REGISTER message from the kernel, and copy buffer for
+ * sadb_supported returned into ipsec_supported.
+ * OUT:
+ * 0: success and return length sent.
+ * -1: error occured, and set errno.
+ */
+int
+pfkey_recv_register(so)
+ int so;
+{
+ pid_t pid = getpid();
+ struct sadb_msg *newmsg;
+ int error = -1;
+
+ /* receive message */
+ for (;;) {
+ if ((newmsg = pfkey_recv(so)) == NULL)
+ return -1;
+ if (newmsg->sadb_msg_type == SADB_REGISTER &&
+ newmsg->sadb_msg_pid == pid)
+ break;
+ free(newmsg);
+ }
+
+ /* check and fix */
+ newmsg->sadb_msg_len = PFKEY_UNUNIT64(newmsg->sadb_msg_len);
+
+ error = pfkey_set_supported(newmsg, newmsg->sadb_msg_len);
+ free(newmsg);
+
+ if (error == 0)
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+
+ return error;
+}
+
+/*
+ * receiving SADB_REGISTER message from the kernel, and copy buffer for
+ * sadb_supported returned into ipsec_supported.
+ * NOTE: sadb_msg_len must be host order.
+ * IN:
+ * tlen: msg length, it's to makeing sure.
+ * OUT:
+ * 0: success and return length sent.
+ * -1: error occured, and set errno.
+ */
+int
+pfkey_set_supported(msg, tlen)
+ struct sadb_msg *msg;
+ int tlen;
+{
+ struct sadb_supported *sup;
+ caddr_t p;
+ caddr_t ep;
+
+ /* validity */
+ if (msg->sadb_msg_len != tlen) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+
+ p = (caddr_t)msg;
+ ep = p + tlen;
+
+ p += sizeof(struct sadb_msg);
+
+ while (p < ep) {
+ sup = (struct sadb_supported *)p;
+ if (ep < p + sizeof(*sup) ||
+ PFKEY_EXTLEN(sup) < sizeof(*sup) ||
+ ep < p + sup->sadb_supported_len) {
+ /* invalid format */
+ break;
+ }
+
+ switch (sup->sadb_supported_exttype) {
+ case SADB_EXT_SUPPORTED_AUTH:
+ case SADB_EXT_SUPPORTED_ENCRYPT:
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_SATYPE;
+ return -1;
+ }
+
+ /* fixed length */
+ sup->sadb_supported_len = PFKEY_EXTLEN(sup);
+
+ /* set supported map */
+ if (setsupportedmap(sup) != 0)
+ return -1;
+
+ p += sup->sadb_supported_len;
+ }
+
+ if (p != ep) {
+ __ipsec_errcode = EIPSEC_INVAL_SATYPE;
+ return -1;
+ }
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+
+ return 0;
+}
+
+/*
+ * sending SADB_FLUSH message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_flush(so, satype)
+ int so;
+ u_int satype;
+{
+ int len;
+
+ if ((len = pfkey_send_x3(so, SADB_FLUSH, satype)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_DUMP message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_dump(so, satype)
+ int so;
+ u_int satype;
+{
+ int len;
+
+ if ((len = pfkey_send_x3(so, SADB_DUMP, satype)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_X_PROMISC message to the kernel.
+ * NOTE that this function handles promisc mode toggle only.
+ * IN:
+ * flag: set promisc off if zero, set promisc on if non-zero.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ * 0 : error occured, and set errno.
+ * others: a pointer to new allocated buffer in which supported
+ * algorithms is.
+ */
+int
+pfkey_send_promisc_toggle(so, flag)
+ int so;
+ int flag;
+{
+ int len;
+
+ if ((len = pfkey_send_x3(so, SADB_X_PROMISC, (flag ? 1 : 0))) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_X_SPDADD message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_spdadd(so, src, prefs, dst, prefd, proto, policy, policylen, seq)
+ int so;
+ struct sockaddr *src, *dst;
+ u_int prefs, prefd, proto;
+ caddr_t policy;
+ int policylen;
+ u_int32_t seq;
+{
+ int len;
+
+ if ((len = pfkey_send_x4(so, SADB_X_SPDADD,
+ src, prefs, dst, prefd, proto,
+ 0, 0,
+ policy, policylen, seq)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_X_SPDADD message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_spdadd2(so, src, prefs, dst, prefd, proto, ltime, vtime,
+ policy, policylen, seq)
+ int so;
+ struct sockaddr *src, *dst;
+ u_int prefs, prefd, proto;
+ u_int64_t ltime, vtime;
+ caddr_t policy;
+ int policylen;
+ u_int32_t seq;
+{
+ int len;
+
+ if ((len = pfkey_send_x4(so, SADB_X_SPDADD,
+ src, prefs, dst, prefd, proto,
+ ltime, vtime,
+ policy, policylen, seq)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_X_SPDUPDATE message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_spdupdate(so, src, prefs, dst, prefd, proto, policy, policylen, seq)
+ int so;
+ struct sockaddr *src, *dst;
+ u_int prefs, prefd, proto;
+ caddr_t policy;
+ int policylen;
+ u_int32_t seq;
+{
+ int len;
+
+ if ((len = pfkey_send_x4(so, SADB_X_SPDUPDATE,
+ src, prefs, dst, prefd, proto,
+ 0, 0,
+ policy, policylen, seq)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_X_SPDUPDATE message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_spdupdate2(so, src, prefs, dst, prefd, proto, ltime, vtime,
+ policy, policylen, seq)
+ int so;
+ struct sockaddr *src, *dst;
+ u_int prefs, prefd, proto;
+ u_int64_t ltime, vtime;
+ caddr_t policy;
+ int policylen;
+ u_int32_t seq;
+{
+ int len;
+
+ if ((len = pfkey_send_x4(so, SADB_X_SPDUPDATE,
+ src, prefs, dst, prefd, proto,
+ ltime, vtime,
+ policy, policylen, seq)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_X_SPDDELETE message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_spddelete(so, src, prefs, dst, prefd, proto, policy, policylen, seq)
+ int so;
+ struct sockaddr *src, *dst;
+ u_int prefs, prefd, proto;
+ caddr_t policy;
+ int policylen;
+ u_int32_t seq;
+{
+ int len;
+
+ if (policylen != sizeof(struct sadb_x_policy)) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+
+ if ((len = pfkey_send_x4(so, SADB_X_SPDDELETE,
+ src, prefs, dst, prefd, proto,
+ 0, 0,
+ policy, policylen, seq)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_X_SPDDELETE message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_spddelete2(so, spid)
+ int so;
+ u_int32_t spid;
+{
+ int len;
+
+ if ((len = pfkey_send_x5(so, SADB_X_SPDDELETE2, spid)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_X_SPDGET message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_spdget(so, spid)
+ int so;
+ u_int32_t spid;
+{
+ int len;
+
+ if ((len = pfkey_send_x5(so, SADB_X_SPDGET, spid)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_X_SPDSETIDX message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_spdsetidx(so, src, prefs, dst, prefd, proto, policy, policylen, seq)
+ int so;
+ struct sockaddr *src, *dst;
+ u_int prefs, prefd, proto;
+ caddr_t policy;
+ int policylen;
+ u_int32_t seq;
+{
+ int len;
+
+ if (policylen != sizeof(struct sadb_x_policy)) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+
+ if ((len = pfkey_send_x4(so, SADB_X_SPDSETIDX,
+ src, prefs, dst, prefd, proto,
+ 0, 0,
+ policy, policylen, seq)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_SPDFLUSH message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_spdflush(so)
+ int so;
+{
+ int len;
+
+ if ((len = pfkey_send_x3(so, SADB_X_SPDFLUSH, SADB_SATYPE_UNSPEC)) < 0)
+ return -1;
+
+ return len;
+}
+
+/*
+ * sending SADB_SPDDUMP message to the kernel.
+ * OUT:
+ * positive: success and return length sent.
+ * -1 : error occured, and set errno.
+ */
+int
+pfkey_send_spddump(so)
+ int so;
+{
+ int len;
+
+ if ((len = pfkey_send_x3(so, SADB_X_SPDDUMP, SADB_SATYPE_UNSPEC)) < 0)
+ return -1;
+
+ return len;
+}
+
+/* sending SADB_ADD or SADB_UPDATE message to the kernel */
+static int
+pfkey_send_x1(so, type, satype, mode, src, dst, spi, reqid, wsize,
+ keymat, e_type, e_keylen, a_type, a_keylen, flags,
+ l_alloc, l_bytes, l_addtime, l_usetime, seq,
+ l_natt_type, l_natt_sport, l_natt_dport, l_natt_oa)
+ int so;
+ u_int type, satype, mode;
+ struct sockaddr *src, *dst, *l_natt_oa;
+ u_int32_t spi, reqid;
+ u_int wsize;
+ caddr_t keymat;
+ u_int e_type, e_keylen, a_type, a_keylen, flags;
+ u_int32_t l_alloc, l_bytes, l_addtime, l_usetime, seq;
+ u_int16_t l_natt_sport, l_natt_dport;
+ u_int8_t l_natt_type;
+{
+ struct sadb_msg *newmsg;
+ int len;
+ caddr_t p;
+ int plen;
+ caddr_t ep;
+
+ /* validity check */
+ if (src == NULL || dst == NULL) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+ if (src->sa_family != dst->sa_family) {
+ __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
+ return -1;
+ }
+ switch (src->sa_family) {
+ case AF_INET:
+ plen = sizeof(struct in_addr) << 3;
+ break;
+ case AF_INET6:
+ plen = sizeof(struct in6_addr) << 3;
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_FAMILY;
+ return -1;
+ }
+
+ switch (satype) {
+ case SADB_SATYPE_ESP:
+ if (e_type == SADB_EALG_NONE) {
+ __ipsec_errcode = EIPSEC_NO_ALGS;
+ return -1;
+ }
+ break;
+ case SADB_SATYPE_AH:
+ if (e_type != SADB_EALG_NONE) {
+ __ipsec_errcode = EIPSEC_INVAL_ALGS;
+ return -1;
+ }
+ if (a_type == SADB_AALG_NONE) {
+ __ipsec_errcode = EIPSEC_NO_ALGS;
+ return -1;
+ }
+ break;
+ case SADB_X_SATYPE_IPCOMP:
+ if (e_type == SADB_X_CALG_NONE) {
+ __ipsec_errcode = EIPSEC_INVAL_ALGS;
+ return -1;
+ }
+ if (a_type != SADB_AALG_NONE) {
+ __ipsec_errcode = EIPSEC_NO_ALGS;
+ return -1;
+ }
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_SATYPE;
+ return -1;
+ }
+
+ /* create new sadb_msg to reply. */
+ len = sizeof(struct sadb_msg)
+ + sizeof(struct sadb_sa)
+ + sizeof(struct sadb_x_sa2)
+ + sizeof(struct sadb_address)
+ + PFKEY_ALIGN8(sysdep_sa_len(src))
+ + sizeof(struct sadb_address)
+ + PFKEY_ALIGN8(sysdep_sa_len(dst))
+ + sizeof(struct sadb_lifetime)
+ + sizeof(struct sadb_lifetime);
+
+ if (e_type != SADB_EALG_NONE && satype != SADB_X_SATYPE_IPCOMP)
+ len += (sizeof(struct sadb_key) + PFKEY_ALIGN8(e_keylen));
+ if (a_type != SADB_AALG_NONE)
+ len += (sizeof(struct sadb_key) + PFKEY_ALIGN8(a_keylen));
+
+#ifdef SADB_X_EXT_NAT_T_TYPE
+ /* add nat-t packets */
+ if (l_natt_type) {
+ if (satype != SADB_SATYPE_ESP) {
+ __ipsec_errcode = EIPSEC_NO_ALGS;
+ return -1;
+ }
+
+ len += sizeof(struct sadb_x_nat_t_type);
+ len += sizeof(struct sadb_x_nat_t_port);
+ len += sizeof(struct sadb_x_nat_t_port);
+ if (l_natt_oa)
+ len += sizeof(struct sadb_address) +
+ PFKEY_ALIGN8(sysdep_sa_len(l_natt_oa));
+ }
+#endif
+
+ if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
+ __ipsec_set_strerror(strerror(errno));
+ return -1;
+ }
+ ep = ((caddr_t)newmsg) + len;
+
+ p = pfkey_setsadbmsg((caddr_t)newmsg, ep, type, len,
+ satype, seq, getpid());
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadbsa(p, ep, spi, wsize, a_type, e_type, flags);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadbxsa2(p, ep, mode, reqid);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_SRC, src, plen,
+ IPSEC_ULPROTO_ANY);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_DST, dst, plen,
+ IPSEC_ULPROTO_ANY);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+
+ if (e_type != SADB_EALG_NONE && satype != SADB_X_SATYPE_IPCOMP) {
+ p = pfkey_setsadbkey(p, ep, SADB_EXT_KEY_ENCRYPT,
+ keymat, e_keylen);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ }
+ if (a_type != SADB_AALG_NONE) {
+ p = pfkey_setsadbkey(p, ep, SADB_EXT_KEY_AUTH,
+ keymat + e_keylen, a_keylen);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ }
+
+ /* set sadb_lifetime for destination */
+ p = pfkey_setsadblifetime(p, ep, SADB_EXT_LIFETIME_HARD,
+ l_alloc, l_bytes, l_addtime, l_usetime);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadblifetime(p, ep, SADB_EXT_LIFETIME_SOFT,
+ l_alloc, l_bytes, l_addtime, l_usetime);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+
+#ifdef SADB_X_EXT_NAT_T_TYPE
+ /* Add nat-t messages */
+ if (l_natt_type) {
+ p = pfkey_set_natt_type(p, ep, SADB_X_EXT_NAT_T_TYPE, l_natt_type);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+
+ p = pfkey_set_natt_port(p, ep, SADB_X_EXT_NAT_T_SPORT,
+ l_natt_sport);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+
+ p = pfkey_set_natt_port(p, ep, SADB_X_EXT_NAT_T_DPORT,
+ l_natt_dport);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+
+ if (l_natt_oa) {
+ p = pfkey_setsadbaddr(p, ep, SADB_X_EXT_NAT_T_OA,
+ l_natt_oa,
+ PFKEY_ALIGN8(sysdep_sa_len(l_natt_oa)),
+ IPSEC_ULPROTO_ANY);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ }
+ }
+#endif
+
+ if (p != ep) {
+ free(newmsg);
+ return -1;
+ }
+
+ /* send message */
+ len = pfkey_send(so, newmsg, len);
+ free(newmsg);
+
+ if (len < 0)
+ return -1;
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return len;
+}
+
+/* sending SADB_DELETE or SADB_GET message to the kernel */
+static int
+pfkey_send_x2(so, type, satype, mode, src, dst, spi)
+ int so;
+ u_int type, satype, mode;
+ struct sockaddr *src, *dst;
+ u_int32_t spi;
+{
+ struct sadb_msg *newmsg;
+ int len;
+ caddr_t p;
+ int plen;
+ caddr_t ep;
+
+ /* validity check */
+ if (src == NULL || dst == NULL) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+ if (src->sa_family != dst->sa_family) {
+ __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
+ return -1;
+ }
+ switch (src->sa_family) {
+ case AF_INET:
+ plen = sizeof(struct in_addr) << 3;
+ break;
+ case AF_INET6:
+ plen = sizeof(struct in6_addr) << 3;
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_FAMILY;
+ return -1;
+ }
+
+ /* create new sadb_msg to reply. */
+ len = sizeof(struct sadb_msg)
+ + sizeof(struct sadb_sa)
+ + sizeof(struct sadb_address)
+ + PFKEY_ALIGN8(sysdep_sa_len(src))
+ + sizeof(struct sadb_address)
+ + PFKEY_ALIGN8(sysdep_sa_len(dst));
+
+ if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
+ __ipsec_set_strerror(strerror(errno));
+ return -1;
+ }
+ ep = ((caddr_t)newmsg) + len;
+
+ p = pfkey_setsadbmsg((caddr_t)newmsg, ep, type, len, satype, 0,
+ getpid());
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadbsa(p, ep, spi, 0, 0, 0, 0);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_SRC, src, plen,
+ IPSEC_ULPROTO_ANY);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_DST, dst, plen,
+ IPSEC_ULPROTO_ANY);
+ if (!p || p != ep) {
+ free(newmsg);
+ return -1;
+ }
+
+ /* send message */
+ len = pfkey_send(so, newmsg, len);
+ free(newmsg);
+
+ if (len < 0)
+ return -1;
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return len;
+}
+
+/*
+ * sending SADB_REGISTER, SADB_FLUSH, SADB_DUMP or SADB_X_PROMISC message
+ * to the kernel
+ */
+static int
+pfkey_send_x3(so, type, satype)
+ int so;
+ u_int type, satype;
+{
+ struct sadb_msg *newmsg;
+ int len;
+ caddr_t p;
+ caddr_t ep;
+
+ /* validity check */
+ switch (type) {
+ case SADB_X_PROMISC:
+ if (satype != 0 && satype != 1) {
+ __ipsec_errcode = EIPSEC_INVAL_SATYPE;
+ return -1;
+ }
+ break;
+ default:
+ switch (satype) {
+ case SADB_SATYPE_UNSPEC:
+ case SADB_SATYPE_AH:
+ case SADB_SATYPE_ESP:
+ case SADB_X_SATYPE_IPCOMP:
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_SATYPE;
+ return -1;
+ }
+ }
+
+ /* create new sadb_msg to send. */
+ len = sizeof(struct sadb_msg);
+
+ if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
+ __ipsec_set_strerror(strerror(errno));
+ return -1;
+ }
+ ep = ((caddr_t)newmsg) + len;
+
+ p = pfkey_setsadbmsg((caddr_t)newmsg, ep, type, len, satype, 0,
+ getpid());
+ if (!p || p != ep) {
+ free(newmsg);
+ return -1;
+ }
+
+ /* send message */
+ len = pfkey_send(so, newmsg, len);
+ free(newmsg);
+
+ if (len < 0)
+ return -1;
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return len;
+}
+
+/* sending SADB_X_SPDADD message to the kernel */
+static int
+pfkey_send_x4(so, type, src, prefs, dst, prefd, proto,
+ ltime, vtime, policy, policylen, seq)
+ int so;
+ struct sockaddr *src, *dst;
+ u_int type, prefs, prefd, proto;
+ u_int64_t ltime, vtime;
+ char *policy;
+ int policylen;
+ u_int32_t seq;
+{
+ struct sadb_msg *newmsg;
+ int len;
+ caddr_t p;
+ int plen;
+ caddr_t ep;
+
+ /* validity check */
+ if (src == NULL || dst == NULL) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+ if (src->sa_family != dst->sa_family) {
+ __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
+ return -1;
+ }
+
+ switch (src->sa_family) {
+ case AF_INET:
+ plen = sizeof(struct in_addr) << 3;
+ break;
+ case AF_INET6:
+ plen = sizeof(struct in6_addr) << 3;
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_FAMILY;
+ return -1;
+ }
+ if (prefs > plen || prefd > plen) {
+ __ipsec_errcode = EIPSEC_INVAL_PREFIXLEN;
+ return -1;
+ }
+
+ /* create new sadb_msg to reply. */
+ len = sizeof(struct sadb_msg)
+ + sizeof(struct sadb_address)
+ + PFKEY_ALIGN8(sysdep_sa_len(src))
+ + sizeof(struct sadb_address)
+ + PFKEY_ALIGN8(sysdep_sa_len(src))
+ + sizeof(struct sadb_lifetime)
+ + policylen;
+
+ if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
+ __ipsec_set_strerror(strerror(errno));
+ return -1;
+ }
+ ep = ((caddr_t)newmsg) + len;
+
+ p = pfkey_setsadbmsg((caddr_t)newmsg, ep, type, len,
+ SADB_SATYPE_UNSPEC, seq, getpid());
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_SRC, src, prefs, proto);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_DST, dst, prefd, proto);
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+ p = pfkey_setsadblifetime(p, ep, SADB_EXT_LIFETIME_HARD,
+ 0, 0, ltime, vtime);
+ if (!p || p + policylen != ep) {
+ free(newmsg);
+ return -1;
+ }
+ memcpy(p, policy, policylen);
+
+ /* send message */
+ len = pfkey_send(so, newmsg, len);
+ free(newmsg);
+
+ if (len < 0)
+ return -1;
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return len;
+}
+
+/* sending SADB_X_SPDGET or SADB_X_SPDDELETE message to the kernel */
+static int
+pfkey_send_x5(so, type, spid)
+ int so;
+ u_int type;
+ u_int32_t spid;
+{
+ struct sadb_msg *newmsg;
+ struct sadb_x_policy xpl;
+ int len;
+ caddr_t p;
+ caddr_t ep;
+
+ /* create new sadb_msg to reply. */
+ len = sizeof(struct sadb_msg)
+ + sizeof(xpl);
+
+ if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
+ __ipsec_set_strerror(strerror(errno));
+ return -1;
+ }
+ ep = ((caddr_t)newmsg) + len;
+
+ p = pfkey_setsadbmsg((caddr_t)newmsg, ep, type, len,
+ SADB_SATYPE_UNSPEC, 0, getpid());
+ if (!p) {
+ free(newmsg);
+ return -1;
+ }
+
+ if (p + sizeof(xpl) != ep) {
+ free(newmsg);
+ return -1;
+ }
+ memset(&xpl, 0, sizeof(xpl));
+ xpl.sadb_x_policy_len = PFKEY_UNIT64(sizeof(xpl));
+ xpl.sadb_x_policy_exttype = SADB_X_EXT_POLICY;
+ xpl.sadb_x_policy_id = spid;
+ memcpy(p, &xpl, sizeof(xpl));
+
+ /* send message */
+ len = pfkey_send(so, newmsg, len);
+ free(newmsg);
+
+ if (len < 0)
+ return -1;
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return len;
+}
+
+/*
+ * open a socket.
+ * OUT:
+ * -1: fail.
+ * others : success and return value of socket.
+ */
+int
+pfkey_open()
+{
+ int so;
+ const int bufsiz = 128 * 1024; /*is 128K enough?*/
+
+ if ((so = socket(PF_KEY, SOCK_RAW, PF_KEY_V2)) < 0) {
+ __ipsec_set_strerror(strerror(errno));
+ return -1;
+ }
+
+ /*
+ * This is a temporary workaround for KAME PR 154.
+ * Don't really care even if it fails.
+ */
+ (void)setsockopt(so, SOL_SOCKET, SO_SNDBUF, &bufsiz, sizeof(bufsiz));
+ (void)setsockopt(so, SOL_SOCKET, SO_RCVBUF, &bufsiz, sizeof(bufsiz));
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return so;
+}
+
+/*
+ * close a socket.
+ * OUT:
+ * 0: success.
+ * -1: fail.
+ */
+void
+pfkey_close(so)
+ int so;
+{
+ (void)close(so);
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return;
+}
+
+/*
+ * receive sadb_msg data, and return pointer to new buffer allocated.
+ * Must free this buffer later.
+ * OUT:
+ * NULL : error occured.
+ * others : a pointer to sadb_msg structure.
+ *
+ * XXX should be rewritten to pass length explicitly
+ */
+struct sadb_msg *
+pfkey_recv(so)
+ int so;
+{
+ struct sadb_msg buf, *newmsg;
+ int len, reallen;
+
+ while ((len = recv(so, (caddr_t)&buf, sizeof(buf), MSG_PEEK)) < 0) {
+ if (errno == EINTR)
+ continue;
+ __ipsec_set_strerror(strerror(errno));
+ return NULL;
+ }
+
+ if (len < sizeof(buf)) {
+ recv(so, (caddr_t)&buf, sizeof(buf), 0);
+ __ipsec_errcode = EIPSEC_MAX;
+ return NULL;
+ }
+
+ /* read real message */
+ reallen = PFKEY_UNUNIT64(buf.sadb_msg_len);
+ if ((newmsg = CALLOC(reallen, struct sadb_msg *)) == 0) {
+ __ipsec_set_strerror(strerror(errno));
+ return NULL;
+ }
+
+ while ((len = recv(so, (caddr_t)newmsg, reallen, 0)) < 0) {
+ if (errno == EINTR)
+ continue;
+ __ipsec_set_strerror(strerror(errno));
+ free(newmsg);
+ return NULL;
+ }
+
+ if (len != reallen) {
+ __ipsec_errcode = EIPSEC_SYSTEM_ERROR;
+ free(newmsg);
+ return NULL;
+ }
+
+ /* don't trust what the kernel says, validate! */
+ if (PFKEY_UNUNIT64(newmsg->sadb_msg_len) != len) {
+ __ipsec_errcode = EIPSEC_SYSTEM_ERROR;
+ free(newmsg);
+ return NULL;
+ }
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return newmsg;
+}
+
+/*
+ * send message to a socket.
+ * OUT:
+ * others: success and return length sent.
+ * -1 : fail.
+ */
+int
+pfkey_send(so, msg, len)
+ int so;
+ struct sadb_msg *msg;
+ int len;
+{
+ if ((len = send(so, (caddr_t)msg, len, 0)) < 0) {
+ __ipsec_set_strerror(strerror(errno));
+ return -1;
+ }
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return len;
+}
+
+/*
+ * %%% Utilities
+ * NOTE: These functions are derived from netkey/key.c in KAME.
+ */
+/*
+ * set the pointer to each header in this message buffer.
+ * IN: msg: pointer to message buffer.
+ * mhp: pointer to the buffer initialized like below:
+ * caddr_t mhp[SADB_EXT_MAX + 1];
+ * OUT: -1: invalid.
+ * 0: valid.
+ *
+ * XXX should be rewritten to obtain length explicitly
+ */
+int
+pfkey_align(msg, mhp)
+ struct sadb_msg *msg;
+ caddr_t *mhp;
+{
+ struct sadb_ext *ext;
+ int i;
+ caddr_t p;
+ caddr_t ep; /* XXX should be passed from upper layer */
+
+ /* validity check */
+ if (msg == NULL || mhp == NULL) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+
+ /* initialize */
+ for (i = 0; i < SADB_EXT_MAX + 1; i++)
+ mhp[i] = NULL;
+
+ mhp[0] = (caddr_t)msg;
+
+ /* initialize */
+ p = (caddr_t) msg;
+ ep = p + PFKEY_UNUNIT64(msg->sadb_msg_len);
+
+ /* skip base header */
+ p += sizeof(struct sadb_msg);
+
+ while (p < ep) {
+ ext = (struct sadb_ext *)p;
+ if (ep < p + sizeof(*ext) || PFKEY_EXTLEN(ext) < sizeof(*ext) ||
+ ep < p + PFKEY_EXTLEN(ext)) {
+ /* invalid format */
+ break;
+ }
+
+ /* duplicate check */
+ /* XXX Are there duplication either KEY_AUTH or KEY_ENCRYPT ?*/
+ if (mhp[ext->sadb_ext_type] != NULL) {
+ __ipsec_errcode = EIPSEC_INVAL_EXTTYPE;
+ return -1;
+ }
+
+ /* set pointer */
+ switch (ext->sadb_ext_type) {
+ case SADB_EXT_SA:
+ case SADB_EXT_LIFETIME_CURRENT:
+ case SADB_EXT_LIFETIME_HARD:
+ case SADB_EXT_LIFETIME_SOFT:
+ case SADB_EXT_ADDRESS_SRC:
+ case SADB_EXT_ADDRESS_DST:
+ case SADB_EXT_ADDRESS_PROXY:
+ case SADB_EXT_KEY_AUTH:
+ /* XXX should to be check weak keys. */
+ case SADB_EXT_KEY_ENCRYPT:
+ /* XXX should to be check weak keys. */
+ case SADB_EXT_IDENTITY_SRC:
+ case SADB_EXT_IDENTITY_DST:
+ case SADB_EXT_SENSITIVITY:
+ case SADB_EXT_PROPOSAL:
+ case SADB_EXT_SUPPORTED_AUTH:
+ case SADB_EXT_SUPPORTED_ENCRYPT:
+ case SADB_EXT_SPIRANGE:
+ case SADB_X_EXT_POLICY:
+ case SADB_X_EXT_SA2:
+#ifdef SADB_X_EXT_NAT_T_TYPE
+ 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:
+#endif
+#ifdef SADB_X_EXT_TAG
+ case SADB_X_EXT_TAG:
+#endif
+ mhp[ext->sadb_ext_type] = (caddr_t)ext;
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_EXTTYPE;
+ return -1;
+ }
+
+ p += PFKEY_EXTLEN(ext);
+ }
+
+ if (p != ep) {
+ __ipsec_errcode = EIPSEC_INVAL_SADBMSG;
+ return -1;
+ }
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return 0;
+}
+
+/*
+ * check basic usage for sadb_msg,
+ * NOTE: This routine is derived from netkey/key.c in KAME.
+ * IN: msg: pointer to message buffer.
+ * mhp: pointer to the buffer initialized like below:
+ *
+ * caddr_t mhp[SADB_EXT_MAX + 1];
+ *
+ * OUT: -1: invalid.
+ * 0: valid.
+ */
+int
+pfkey_check(mhp)
+ caddr_t *mhp;
+{
+ struct sadb_msg *msg;
+
+ /* validity check */
+ if (mhp == NULL || mhp[0] == NULL) {
+ __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
+ return -1;
+ }
+
+ msg = (struct sadb_msg *)mhp[0];
+
+ /* check version */
+ if (msg->sadb_msg_version != PF_KEY_V2) {
+ __ipsec_errcode = EIPSEC_INVAL_VERSION;
+ return -1;
+ }
+
+ /* check type */
+ if (msg->sadb_msg_type > SADB_MAX) {
+ __ipsec_errcode = EIPSEC_INVAL_MSGTYPE;
+ return -1;
+ }
+
+ /* check SA type */
+ switch (msg->sadb_msg_satype) {
+ case SADB_SATYPE_UNSPEC:
+ switch (msg->sadb_msg_type) {
+ case SADB_GETSPI:
+ case SADB_UPDATE:
+ case SADB_ADD:
+ case SADB_DELETE:
+ case SADB_GET:
+ case SADB_ACQUIRE:
+ case SADB_EXPIRE:
+#ifdef SADB_X_NAT_T_NEW_MAPPING
+ case SADB_X_NAT_T_NEW_MAPPING:
+#endif
+ __ipsec_errcode = EIPSEC_INVAL_SATYPE;
+ return -1;
+ }
+ break;
+ case SADB_SATYPE_ESP:
+ case SADB_SATYPE_AH:
+ case SADB_X_SATYPE_IPCOMP:
+ switch (msg->sadb_msg_type) {
+ case SADB_X_SPDADD:
+ case SADB_X_SPDDELETE:
+ case SADB_X_SPDGET:
+ case SADB_X_SPDDUMP:
+ case SADB_X_SPDFLUSH:
+ __ipsec_errcode = EIPSEC_INVAL_SATYPE;
+ return -1;
+ }
+#ifdef SADB_X_NAT_T_NEW_MAPPING
+ if (msg->sadb_msg_type == SADB_X_NAT_T_NEW_MAPPING &&
+ msg->sadb_msg_satype != SADB_SATYPE_ESP) {
+ __ipsec_errcode = EIPSEC_INVAL_SATYPE;
+ return -1;
+ }
+#endif
+ break;
+ case SADB_SATYPE_RSVP:
+ case SADB_SATYPE_OSPFV2:
+ case SADB_SATYPE_RIPV2:
+ case SADB_SATYPE_MIP:
+ __ipsec_errcode = EIPSEC_NOT_SUPPORTED;
+ return -1;
+ case 1: /* XXX: What does it do ? */
+ if (msg->sadb_msg_type == SADB_X_PROMISC)
+ break;
+ /*FALLTHROUGH*/
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_SATYPE;
+ return -1;
+ }
+
+ /* check field of upper layer protocol and address family */
+ if (mhp[SADB_EXT_ADDRESS_SRC] != NULL
+ && mhp[SADB_EXT_ADDRESS_DST] != NULL) {
+ struct sadb_address *src0, *dst0;
+
+ src0 = (struct sadb_address *)(mhp[SADB_EXT_ADDRESS_SRC]);
+ dst0 = (struct sadb_address *)(mhp[SADB_EXT_ADDRESS_DST]);
+
+ if (src0->sadb_address_proto != dst0->sadb_address_proto) {
+ __ipsec_errcode = EIPSEC_PROTO_MISMATCH;
+ return -1;
+ }
+
+ if (PFKEY_ADDR_SADDR(src0)->sa_family
+ != PFKEY_ADDR_SADDR(dst0)->sa_family) {
+ __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
+ return -1;
+ }
+
+ switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
+ case AF_INET:
+ case AF_INET6:
+ break;
+ default:
+ __ipsec_errcode = EIPSEC_INVAL_FAMILY;
+ return -1;
+ }
+
+ /*
+ * prefixlen == 0 is valid because there must be the case
+ * all addresses are matched.
+ */
+ }
+
+ __ipsec_errcode = EIPSEC_NO_ERROR;
+ return 0;
+}
+
+/*
+ * set data into sadb_msg.
+ * `buf' must has been allocated sufficiently.
+ */
+static caddr_t
+pfkey_setsadbmsg(buf, lim, type, tlen, satype, seq, pid)
+ caddr_t buf;
+ caddr_t lim;
+ u_int type, satype;
+ u_int tlen;
+ u_int32_t seq;
+ pid_t pid;
+{
+ struct sadb_msg *p;
+ u_int len;
+
+ p = (struct sadb_msg *)buf;
+ len = sizeof(struct sadb_msg);
+
+ if (buf + len > lim)
+ return NULL;
+
+ memset(p, 0, len);
+ p->sadb_msg_version = PF_KEY_V2;
+ p->sadb_msg_type = type;
+ p->sadb_msg_errno = 0;
+ p->sadb_msg_satype = satype;
+ p->sadb_msg_len = PFKEY_UNIT64(tlen);
+ p->sadb_msg_reserved = 0;
+ p->sadb_msg_seq = seq;
+ p->sadb_msg_pid = (u_int32_t)pid;
+
+ return(buf + len);
+}
+
+/*
+ * copy secasvar data into sadb_address.
+ * `buf' must has been allocated sufficiently.
+ */
+static caddr_t
+pfkey_setsadbsa(buf, lim, spi, wsize, auth, enc, flags)
+ caddr_t buf;
+ caddr_t lim;
+ u_int32_t spi, flags;
+ u_int wsize, auth, enc;
+{
+ struct sadb_sa *p;
+ u_int len;
+
+ p = (struct sadb_sa *)buf;
+ len = sizeof(struct sadb_sa);
+
+ if (buf + len > lim)
+ return NULL;
+
+ memset(p, 0, len);
+ p->sadb_sa_len = PFKEY_UNIT64(len);
+ p->sadb_sa_exttype = SADB_EXT_SA;
+ p->sadb_sa_spi = spi;
+ p->sadb_sa_replay = wsize;
+ p->sadb_sa_state = SADB_SASTATE_LARVAL;
+ p->sadb_sa_auth = auth;
+ p->sadb_sa_encrypt = enc;
+ p->sadb_sa_flags = flags;
+
+ return(buf + len);
+}
+
+/*
+ * set data into sadb_address.
+ * `buf' must has been allocated sufficiently.
+ * prefixlen is in bits.
+ */
+static caddr_t
+pfkey_setsadbaddr(buf, lim, exttype, saddr, prefixlen, ul_proto)
+ caddr_t buf;
+ caddr_t lim;
+ u_int exttype;
+ struct sockaddr *saddr;
+ u_int prefixlen;
+ u_int ul_proto;
+{
+ struct sadb_address *p;
+ u_int len;
+
+ p = (struct sadb_address *)buf;
+ len = sizeof(struct sadb_address) + PFKEY_ALIGN8(sysdep_sa_len(saddr));
+
+ if (buf + len > lim)
+ return NULL;
+
+ memset(p, 0, len);
+ p->sadb_address_len = PFKEY_UNIT64(len);
+ p->sadb_address_exttype = exttype & 0xffff;
+ p->sadb_address_proto = ul_proto & 0xff;
+ p->sadb_address_prefixlen = prefixlen;
+ p->sadb_address_reserved = 0;
+
+ memcpy(p + 1, saddr, sysdep_sa_len(saddr));
+
+ return(buf + len);
+}
+
+/*
+ * set sadb_key structure after clearing buffer with zero.
+ * OUT: the pointer of buf + len.
+ */
+static caddr_t
+pfkey_setsadbkey(buf, lim, type, key, keylen)
+ caddr_t buf;
+ caddr_t lim;
+ caddr_t key;
+ u_int type, keylen;
+{
+ struct sadb_key *p;
+ u_int len;
+
+ p = (struct sadb_key *)buf;
+ len = sizeof(struct sadb_key) + PFKEY_ALIGN8(keylen);
+
+ if (buf + len > lim)
+ return NULL;
+
+ memset(p, 0, len);
+ p->sadb_key_len = PFKEY_UNIT64(len);
+ p->sadb_key_exttype = type;
+ p->sadb_key_bits = keylen << 3;
+ p->sadb_key_reserved = 0;
+
+ memcpy(p + 1, key, keylen);
+
+ return buf + len;
+}
+
+/*
+ * set sadb_lifetime structure after clearing buffer with zero.
+ * OUT: the pointer of buf + len.
+ */
+static caddr_t
+pfkey_setsadblifetime(buf, lim, type, l_alloc, l_bytes, l_addtime, l_usetime)
+ caddr_t buf;
+ caddr_t lim;
+ u_int type;
+ u_int32_t l_alloc, l_bytes, l_addtime, l_usetime;
+{
+ struct sadb_lifetime *p;
+ u_int len;
+
+ p = (struct sadb_lifetime *)buf;
+ len = sizeof(struct sadb_lifetime);
+
+ if (buf + len > lim)
+ return NULL;
+
+ memset(p, 0, len);
+ p->sadb_lifetime_len = PFKEY_UNIT64(len);
+ p->sadb_lifetime_exttype = type;
+
+ switch (type) {
+ case SADB_EXT_LIFETIME_SOFT:
+ p->sadb_lifetime_allocations
+ = (l_alloc * soft_lifetime_allocations_rate) /100;
+ p->sadb_lifetime_bytes
+ = (l_bytes * soft_lifetime_bytes_rate) /100;
+ p->sadb_lifetime_addtime
+ = (l_addtime * soft_lifetime_addtime_rate) /100;
+ p->sadb_lifetime_usetime
+ = (l_usetime * soft_lifetime_usetime_rate) /100;
+ break;
+ case SADB_EXT_LIFETIME_HARD:
+ p->sadb_lifetime_allocations = l_alloc;
+ p->sadb_lifetime_bytes = l_bytes;
+ p->sadb_lifetime_addtime = l_addtime;
+ p->sadb_lifetime_usetime = l_usetime;
+ break;
+ }
+
+ return buf + len;
+}
+
+/*
+ * copy secasvar data into sadb_address.
+ * `buf' must has been allocated sufficiently.
+ */
+static caddr_t
+pfkey_setsadbxsa2(buf, lim, mode0, reqid)
+ caddr_t buf;
+ caddr_t lim;
+ u_int32_t mode0;
+ u_int32_t reqid;
+{
+ struct sadb_x_sa2 *p;
+ u_int8_t mode = mode0 & 0xff;
+ u_int len;
+
+ p = (struct sadb_x_sa2 *)buf;
+ len = sizeof(struct sadb_x_sa2);
+
+ if (buf + len > lim)
+ return NULL;
+
+ memset(p, 0, len);
+ p->sadb_x_sa2_len = PFKEY_UNIT64(len);
+ p->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
+ p->sadb_x_sa2_mode = mode;
+ p->sadb_x_sa2_reqid = reqid;
+
+ return(buf + len);
+}
+
+#ifdef SADB_X_EXT_NAT_T_TYPE
+static caddr_t
+pfkey_set_natt_type(buf, lim, type, l_natt_type)
+ caddr_t buf;
+ caddr_t lim;
+ u_int type;
+ u_int8_t l_natt_type;
+{
+ struct sadb_x_nat_t_type *p;
+ u_int len;
+
+ p = (struct sadb_x_nat_t_type *)buf;
+ len = sizeof(struct sadb_x_nat_t_type);
+
+ if (buf + len > lim)
+ return NULL;
+
+ memset(p, 0, len);
+ p->sadb_x_nat_t_type_len = PFKEY_UNIT64(len);
+ p->sadb_x_nat_t_type_exttype = type;
+ p->sadb_x_nat_t_type_type = l_natt_type;
+
+ return(buf + len);
+}
+
+static caddr_t
+pfkey_set_natt_port(buf, lim, type, l_natt_port)
+ caddr_t buf;
+ caddr_t lim;
+ u_int type;
+ u_int16_t l_natt_port;
+{
+ struct sadb_x_nat_t_port *p;
+ u_int len;
+
+ p = (struct sadb_x_nat_t_port *)buf;
+ len = sizeof(struct sadb_x_nat_t_port);
+
+ if (buf + len > lim)
+ return NULL;
+
+ memset(p, 0, len);
+ p->sadb_x_nat_t_port_len = PFKEY_UNIT64(len);
+ p->sadb_x_nat_t_port_exttype = type;
+ p->sadb_x_nat_t_port_port = htons(l_natt_port);
+
+ return(buf + len);
+}
+#endif
projects / bcm963xx.git / blobdiff