1 /* $FreeBSD: src/lib/libipsec/pfkey.c,v 1.1.2.2 2001/07/03 11:01:14 ume Exp $ */
2 /* $DragonFly: src/lib/libipsec/pfkey.c,v 1.4 2003/11/13 02:39:42 drhodus Exp $ */
3 /* $KAME: pfkey.c,v 1.39 2001/03/05 18:22:17 thorpej Exp $ */
6 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the project nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <sys/types.h>
35 #include <sys/param.h>
36 #include <sys/socket.h>
37 #include <net/pfkeyv2.h>
38 #include <netkey/key_var.h>
39 #include <netinet/in.h>
40 #include <netinet6/ipsec.h>
48 #include "ipsec_strerror.h"
51 #define CALLOC(size, cast) (cast)calloc(1, (size))
53 static int findsupportedmap (int);
54 static int setsupportedmap (struct sadb_supported *);
55 static struct sadb_alg *findsupportedalg (u_int, u_int);
56 static int pfkey_send_x1 (int, u_int, u_int, u_int, struct sockaddr *,
57 struct sockaddr *, u_int32_t, u_int32_t, u_int, caddr_t,
58 u_int, u_int, u_int, u_int, u_int, u_int32_t, u_int32_t,
59 u_int32_t, u_int32_t, u_int32_t);
60 static int pfkey_send_x2 (int, u_int, u_int, u_int,
61 struct sockaddr *, struct sockaddr *, u_int32_t);
62 static int pfkey_send_x3 (int, u_int, u_int);
63 static int pfkey_send_x4 (int, u_int, struct sockaddr *, u_int,
64 struct sockaddr *, u_int, u_int, u_int64_t, u_int64_t,
65 char *, int, u_int32_t);
66 static int pfkey_send_x5 (int, u_int, u_int32_t);
68 static caddr_t pfkey_setsadbmsg (caddr_t, caddr_t, u_int, u_int,
69 u_int, u_int32_t, pid_t);
70 static caddr_t pfkey_setsadbsa (caddr_t, caddr_t, u_int32_t, u_int,
71 u_int, u_int, u_int32_t);
72 static caddr_t pfkey_setsadbaddr (caddr_t, caddr_t, u_int,
73 struct sockaddr *, u_int, u_int);
74 static caddr_t pfkey_setsadbkey (caddr_t, caddr_t, u_int, caddr_t, u_int);
75 static caddr_t pfkey_setsadblifetime (caddr_t, caddr_t, u_int, u_int32_t,
76 u_int32_t, u_int32_t, u_int32_t);
77 static caddr_t pfkey_setsadbxsa2 (caddr_t, caddr_t, u_int32_t, u_int32_t);
80 * make and search supported algorithm structure.
82 static struct sadb_supported *ipsec_supported[] = { NULL, NULL, NULL, NULL};
84 static int supported_map[] = {
88 SADB_X_SATYPE_TCPSIGNATURE,
92 findsupportedmap(satype)
97 for (i = 0; i < sizeof(supported_map)/sizeof(supported_map[0]); i++)
98 if (supported_map[i] == satype)
103 static struct sadb_alg *
104 findsupportedalg(satype, alg_id)
105 u_int satype, alg_id;
112 algno = findsupportedmap(satype);
114 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
117 if (ipsec_supported[algno] == NULL) {
118 __ipsec_errcode = EIPSEC_DO_GET_SUPP_LIST;
122 tlen = ipsec_supported[algno]->sadb_supported_len
123 - sizeof(struct sadb_supported);
124 p = (caddr_t)(ipsec_supported[algno] + 1);
126 if (tlen < sizeof(struct sadb_alg)) {
130 if (((struct sadb_alg *)p)->sadb_alg_id == alg_id)
131 return (struct sadb_alg *)p;
133 tlen -= sizeof(struct sadb_alg);
134 p += sizeof(struct sadb_alg);
137 __ipsec_errcode = EIPSEC_NOT_SUPPORTED;
143 struct sadb_supported *sup;
145 struct sadb_supported **ipsup;
147 switch (sup->sadb_supported_exttype) {
148 case SADB_EXT_SUPPORTED_AUTH:
149 ipsup = &ipsec_supported[findsupportedmap(SADB_SATYPE_AH)];
151 case SADB_EXT_SUPPORTED_ENCRYPT:
152 ipsup = &ipsec_supported[findsupportedmap(SADB_SATYPE_ESP)];
155 __ipsec_errcode = EIPSEC_INVAL_SATYPE;
162 *ipsup = malloc(sup->sadb_supported_len);
164 __ipsec_set_strerror(strerror(errno));
167 memcpy(*ipsup, sup, sup->sadb_supported_len);
173 * check key length against algorithm specified.
174 * This function is called with SADB_EXT_SUPPORTED_{AUTH,ENCRYPT} as the
175 * augument, and only calls to ipsec_check_keylen2();
176 * keylen is the unit of bit.
182 ipsec_check_keylen(supported, alg_id, keylen)
191 case SADB_EXT_SUPPORTED_AUTH:
192 satype = SADB_SATYPE_AH;
194 case SADB_EXT_SUPPORTED_ENCRYPT:
195 satype = SADB_SATYPE_ESP;
198 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
202 return ipsec_check_keylen2(satype, alg_id, keylen);
206 * check key length against algorithm specified.
207 * satype is one of satype defined at pfkeyv2.h.
208 * keylen is the unit of bit.
214 ipsec_check_keylen2(satype, alg_id, keylen)
219 struct sadb_alg *alg;
221 alg = findsupportedalg(satype, alg_id);
225 if (keylen < alg->sadb_alg_minbits || keylen > alg->sadb_alg_maxbits) {
226 __ipsec_errcode = EIPSEC_INVAL_KEYLEN;
230 __ipsec_errcode = EIPSEC_NO_ERROR;
235 * get max/min key length against algorithm specified.
236 * satype is one of satype defined at pfkeyv2.h.
237 * keylen is the unit of bit.
243 ipsec_get_keylen(supported, alg_id, alg0)
244 u_int supported, alg_id;
245 struct sadb_alg *alg0;
247 struct sadb_alg *alg;
252 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
257 case SADB_EXT_SUPPORTED_AUTH:
258 satype = SADB_SATYPE_AH;
260 case SADB_EXT_SUPPORTED_ENCRYPT:
261 satype = SADB_SATYPE_ESP;
264 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
268 alg = findsupportedalg(satype, alg_id);
272 memcpy(alg0, alg, sizeof(*alg0));
274 __ipsec_errcode = EIPSEC_NO_ERROR;
279 * set the rate for SOFT lifetime against HARD one.
280 * If rate is more than 100 or equal to zero, then set to 100.
282 static u_int soft_lifetime_allocations_rate = PFKEY_SOFT_LIFETIME_RATE;
283 static u_int soft_lifetime_bytes_rate = PFKEY_SOFT_LIFETIME_RATE;
284 static u_int soft_lifetime_addtime_rate = PFKEY_SOFT_LIFETIME_RATE;
285 static u_int soft_lifetime_usetime_rate = PFKEY_SOFT_LIFETIME_RATE;
288 pfkey_set_softrate(type, rate)
291 __ipsec_errcode = EIPSEC_NO_ERROR;
293 if (rate > 100 || rate == 0)
297 case SADB_X_LIFETIME_ALLOCATIONS:
298 soft_lifetime_allocations_rate = rate;
300 case SADB_X_LIFETIME_BYTES:
301 soft_lifetime_bytes_rate = rate;
303 case SADB_X_LIFETIME_ADDTIME:
304 soft_lifetime_addtime_rate = rate;
306 case SADB_X_LIFETIME_USETIME:
307 soft_lifetime_usetime_rate = rate;
311 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
316 * get current rate for SOFT lifetime against HARD one.
317 * ATTENTION: ~0 is returned if invalid type was passed.
320 pfkey_get_softrate(type)
324 case SADB_X_LIFETIME_ALLOCATIONS:
325 return soft_lifetime_allocations_rate;
326 case SADB_X_LIFETIME_BYTES:
327 return soft_lifetime_bytes_rate;
328 case SADB_X_LIFETIME_ADDTIME:
329 return soft_lifetime_addtime_rate;
330 case SADB_X_LIFETIME_USETIME:
331 return soft_lifetime_usetime_rate;
338 * sending SADB_GETSPI message to the kernel.
340 * positive: success and return length sent.
341 * -1 : error occured, and set errno.
344 pfkey_send_getspi(so, satype, mode, src, dst, min, max, reqid, seq)
347 struct sockaddr *src, *dst;
348 u_int32_t min, max, reqid, seq;
350 struct sadb_msg *newmsg;
353 int need_spirange = 0;
358 if (src == NULL || dst == NULL) {
359 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
362 if (src->sa_family != dst->sa_family) {
363 __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
366 if (min > max || (min > 0 && min <= 255)) {
367 __ipsec_errcode = EIPSEC_INVAL_SPI;
370 switch (src->sa_family) {
372 plen = sizeof(struct in_addr) << 3;
375 plen = sizeof(struct in6_addr) << 3;
378 __ipsec_errcode = EIPSEC_INVAL_FAMILY;
382 /* create new sadb_msg to send. */
383 len = sizeof(struct sadb_msg)
384 + sizeof(struct sadb_x_sa2)
385 + sizeof(struct sadb_address)
386 + PFKEY_ALIGN8(src->sa_len)
387 + sizeof(struct sadb_address)
388 + PFKEY_ALIGN8(dst->sa_len);
390 if (min > 255 && max < ~0) {
392 len += sizeof(struct sadb_spirange);
395 if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
396 __ipsec_set_strerror(strerror(errno));
399 ep = ((caddr_t)newmsg) + len;
401 p = pfkey_setsadbmsg((caddr_t)newmsg, ep, SADB_GETSPI,
402 len, satype, seq, getpid());
408 p = pfkey_setsadbxsa2(p, ep, mode, reqid);
414 /* set sadb_address for source */
415 p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_SRC, src, plen,
422 /* set sadb_address for destination */
423 p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_DST, dst, plen,
430 /* proccessing spi range */
432 struct sadb_spirange spirange;
434 if (p + sizeof(spirange) > ep) {
439 memset(&spirange, 0, sizeof(spirange));
440 spirange.sadb_spirange_len = PFKEY_UNIT64(sizeof(spirange));
441 spirange.sadb_spirange_exttype = SADB_EXT_SPIRANGE;
442 spirange.sadb_spirange_min = min;
443 spirange.sadb_spirange_max = max;
445 memcpy(p, &spirange, sizeof(spirange));
447 p += sizeof(spirange);
455 len = pfkey_send(so, newmsg, len);
461 __ipsec_errcode = EIPSEC_NO_ERROR;
466 * sending SADB_UPDATE message to the kernel.
467 * The length of key material is a_keylen + e_keylen.
469 * positive: success and return length sent.
470 * -1 : error occured, and set errno.
473 pfkey_send_update(so, satype, mode, src, dst, spi, reqid, wsize,
474 keymat, e_type, e_keylen, a_type, a_keylen, flags,
475 l_alloc, l_bytes, l_addtime, l_usetime, seq)
477 u_int satype, mode, wsize;
478 struct sockaddr *src, *dst;
479 u_int32_t spi, reqid;
481 u_int e_type, e_keylen, a_type, a_keylen, flags;
483 u_int64_t l_bytes, l_addtime, l_usetime;
487 if ((len = pfkey_send_x1(so, SADB_UPDATE, satype, mode, src, dst, spi,
489 keymat, e_type, e_keylen, a_type, a_keylen, flags,
490 l_alloc, l_bytes, l_addtime, l_usetime, seq)) < 0)
497 * sending SADB_ADD message to the kernel.
498 * The length of key material is a_keylen + e_keylen.
500 * positive: success and return length sent.
501 * -1 : error occured, and set errno.
504 pfkey_send_add(so, satype, mode, src, dst, spi, reqid, wsize,
505 keymat, e_type, e_keylen, a_type, a_keylen, flags,
506 l_alloc, l_bytes, l_addtime, l_usetime, seq)
508 u_int satype, mode, wsize;
509 struct sockaddr *src, *dst;
510 u_int32_t spi, reqid;
512 u_int e_type, e_keylen, a_type, a_keylen, flags;
514 u_int64_t l_bytes, l_addtime, l_usetime;
518 if ((len = pfkey_send_x1(so, SADB_ADD, satype, mode, src, dst, spi,
520 keymat, e_type, e_keylen, a_type, a_keylen, flags,
521 l_alloc, l_bytes, l_addtime, l_usetime, seq)) < 0)
528 * sending SADB_DELETE message to the kernel.
530 * positive: success and return length sent.
531 * -1 : error occured, and set errno.
534 pfkey_send_delete(so, satype, mode, src, dst, spi)
537 struct sockaddr *src, *dst;
541 if ((len = pfkey_send_x2(so, SADB_DELETE, satype, mode, src, dst, spi)) < 0)
548 * sending SADB_DELETE without spi to the kernel. This is
549 * the "delete all" request (an extension also present in
553 * positive: success and return length sent
554 * -1 : error occured, and set errno
557 pfkey_send_delete_all(so, satype, mode, src, dst)
560 struct sockaddr *src, *dst;
562 struct sadb_msg *newmsg;
569 if (src == NULL || dst == NULL) {
570 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
573 if (src->sa_family != dst->sa_family) {
574 __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
577 switch (src->sa_family) {
579 plen = sizeof(struct in_addr) << 3;
582 plen = sizeof(struct in6_addr) << 3;
585 __ipsec_errcode = EIPSEC_INVAL_FAMILY;
589 /* create new sadb_msg to reply. */
590 len = sizeof(struct sadb_msg)
591 + sizeof(struct sadb_address)
592 + PFKEY_ALIGN8(src->sa_len)
593 + sizeof(struct sadb_address)
594 + PFKEY_ALIGN8(dst->sa_len);
596 if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
597 __ipsec_set_strerror(strerror(errno));
600 ep = ((caddr_t)newmsg) + len;
602 p = pfkey_setsadbmsg((caddr_t)newmsg, ep, SADB_DELETE, len, satype, 0,
608 p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_SRC, src, plen,
614 p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_DST, dst, plen,
622 len = pfkey_send(so, newmsg, len);
628 __ipsec_errcode = EIPSEC_NO_ERROR;
633 * sending SADB_GET message to the kernel.
635 * positive: success and return length sent.
636 * -1 : error occured, and set errno.
639 pfkey_send_get(so, satype, mode, src, dst, spi)
642 struct sockaddr *src, *dst;
646 if ((len = pfkey_send_x2(so, SADB_GET, satype, mode, src, dst, spi)) < 0)
653 * sending SADB_REGISTER message to the kernel.
655 * positive: success and return length sent.
656 * -1 : error occured, and set errno.
659 pfkey_send_register(so, satype)
665 if (satype == PF_UNSPEC) {
667 algno < sizeof(supported_map)/sizeof(supported_map[0]);
669 if (ipsec_supported[algno]) {
670 free(ipsec_supported[algno]);
671 ipsec_supported[algno] = NULL;
675 algno = findsupportedmap(satype);
677 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
681 if (ipsec_supported[algno]) {
682 free(ipsec_supported[algno]);
683 ipsec_supported[algno] = NULL;
687 if ((len = pfkey_send_x3(so, SADB_REGISTER, satype)) < 0)
694 * receiving SADB_REGISTER message from the kernel, and copy buffer for
695 * sadb_supported returned into ipsec_supported.
697 * 0: success and return length sent.
698 * -1: error occured, and set errno.
701 pfkey_recv_register(so)
704 pid_t pid = getpid();
705 struct sadb_msg *newmsg;
708 /* receive message */
710 if ((newmsg = pfkey_recv(so)) == NULL)
712 } while (newmsg->sadb_msg_type != SADB_REGISTER
713 || newmsg->sadb_msg_pid != pid);
716 newmsg->sadb_msg_len = PFKEY_UNUNIT64(newmsg->sadb_msg_len);
718 error = pfkey_set_supported(newmsg, newmsg->sadb_msg_len);
722 __ipsec_errcode = EIPSEC_NO_ERROR;
728 * receiving SADB_REGISTER message from the kernel, and copy buffer for
729 * sadb_supported returned into ipsec_supported.
730 * NOTE: sadb_msg_len must be host order.
732 * tlen: msg length, it's to makeing sure.
734 * 0: success and return length sent.
735 * -1: error occured, and set errno.
738 pfkey_set_supported(msg, tlen)
739 struct sadb_msg *msg;
742 struct sadb_supported *sup;
747 if (msg->sadb_msg_len != tlen) {
748 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
755 p += sizeof(struct sadb_msg);
758 sup = (struct sadb_supported *)p;
759 if (ep < p + sizeof(*sup) ||
760 PFKEY_EXTLEN(sup) < sizeof(*sup) ||
761 ep < p + sup->sadb_supported_len) {
766 switch (sup->sadb_supported_exttype) {
767 case SADB_EXT_SUPPORTED_AUTH:
768 case SADB_EXT_SUPPORTED_ENCRYPT:
771 __ipsec_errcode = EIPSEC_INVAL_SATYPE;
776 sup->sadb_supported_len = PFKEY_EXTLEN(sup);
778 /* set supported map */
779 if (setsupportedmap(sup) != 0)
782 p += sup->sadb_supported_len;
786 __ipsec_errcode = EIPSEC_INVAL_SATYPE;
790 __ipsec_errcode = EIPSEC_NO_ERROR;
796 * sending SADB_FLUSH message to the kernel.
798 * positive: success and return length sent.
799 * -1 : error occured, and set errno.
802 pfkey_send_flush(so, satype)
808 if ((len = pfkey_send_x3(so, SADB_FLUSH, satype)) < 0)
815 * sending SADB_DUMP message to the kernel.
817 * positive: success and return length sent.
818 * -1 : error occured, and set errno.
821 pfkey_send_dump(so, satype)
827 if ((len = pfkey_send_x3(so, SADB_DUMP, satype)) < 0)
834 * sending SADB_X_PROMISC message to the kernel.
835 * NOTE that this function handles promisc mode toggle only.
837 * flag: set promisc off if zero, set promisc on if non-zero.
839 * positive: success and return length sent.
840 * -1 : error occured, and set errno.
841 * 0 : error occured, and set errno.
842 * others: a pointer to new allocated buffer in which supported
846 pfkey_send_promisc_toggle(so, flag)
852 if ((len = pfkey_send_x3(so, SADB_X_PROMISC, (flag ? 1 : 0))) < 0)
859 * sending SADB_X_SPDADD message to the kernel.
861 * positive: success and return length sent.
862 * -1 : error occured, and set errno.
865 pfkey_send_spdadd(so, src, prefs, dst, prefd, proto, policy, policylen, seq)
867 struct sockaddr *src, *dst;
868 u_int prefs, prefd, proto;
875 if ((len = pfkey_send_x4(so, SADB_X_SPDADD,
876 src, prefs, dst, prefd, proto,
878 policy, policylen, seq)) < 0)
885 * sending SADB_X_SPDADD message to the kernel.
887 * positive: success and return length sent.
888 * -1 : error occured, and set errno.
891 pfkey_send_spdadd2(so, src, prefs, dst, prefd, proto, ltime, vtime,
892 policy, policylen, seq)
894 struct sockaddr *src, *dst;
895 u_int prefs, prefd, proto;
896 u_int64_t ltime, vtime;
903 if ((len = pfkey_send_x4(so, SADB_X_SPDADD,
904 src, prefs, dst, prefd, proto,
906 policy, policylen, seq)) < 0)
913 * sending SADB_X_SPDUPDATE message to the kernel.
915 * positive: success and return length sent.
916 * -1 : error occured, and set errno.
919 pfkey_send_spdupdate(so, src, prefs, dst, prefd, proto, policy, policylen, seq)
921 struct sockaddr *src, *dst;
922 u_int prefs, prefd, proto;
929 if ((len = pfkey_send_x4(so, SADB_X_SPDUPDATE,
930 src, prefs, dst, prefd, proto,
932 policy, policylen, seq)) < 0)
939 * sending SADB_X_SPDUPDATE message to the kernel.
941 * positive: success and return length sent.
942 * -1 : error occured, and set errno.
945 pfkey_send_spdupdate2(so, src, prefs, dst, prefd, proto, ltime, vtime,
946 policy, policylen, seq)
948 struct sockaddr *src, *dst;
949 u_int prefs, prefd, proto;
950 u_int64_t ltime, vtime;
957 if ((len = pfkey_send_x4(so, SADB_X_SPDUPDATE,
958 src, prefs, dst, prefd, proto,
960 policy, policylen, seq)) < 0)
967 * sending SADB_X_SPDDELETE message to the kernel.
969 * positive: success and return length sent.
970 * -1 : error occured, and set errno.
973 pfkey_send_spddelete(so, src, prefs, dst, prefd, proto, policy, policylen, seq)
975 struct sockaddr *src, *dst;
976 u_int prefs, prefd, proto;
983 if (policylen != sizeof(struct sadb_x_policy)) {
984 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
988 if ((len = pfkey_send_x4(so, SADB_X_SPDDELETE,
989 src, prefs, dst, prefd, proto,
991 policy, policylen, seq)) < 0)
998 * sending SADB_X_SPDDELETE message to the kernel.
1000 * positive: success and return length sent.
1001 * -1 : error occured, and set errno.
1004 pfkey_send_spddelete2(so, spid)
1010 if ((len = pfkey_send_x5(so, SADB_X_SPDDELETE2, spid)) < 0)
1017 * sending SADB_X_SPDGET message to the kernel.
1019 * positive: success and return length sent.
1020 * -1 : error occured, and set errno.
1023 pfkey_send_spdget(so, spid)
1029 if ((len = pfkey_send_x5(so, SADB_X_SPDGET, spid)) < 0)
1036 * sending SADB_X_SPDSETIDX message to the kernel.
1038 * positive: success and return length sent.
1039 * -1 : error occured, and set errno.
1042 pfkey_send_spdsetidx(so, src, prefs, dst, prefd, proto, policy, policylen, seq)
1044 struct sockaddr *src, *dst;
1045 u_int prefs, prefd, proto;
1052 if (policylen != sizeof(struct sadb_x_policy)) {
1053 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
1057 if ((len = pfkey_send_x4(so, SADB_X_SPDSETIDX,
1058 src, prefs, dst, prefd, proto,
1060 policy, policylen, seq)) < 0)
1067 * sending SADB_SPDFLUSH message to the kernel.
1069 * positive: success and return length sent.
1070 * -1 : error occured, and set errno.
1073 pfkey_send_spdflush(so)
1078 if ((len = pfkey_send_x3(so, SADB_X_SPDFLUSH, SADB_SATYPE_UNSPEC)) < 0)
1085 * sending SADB_SPDDUMP message to the kernel.
1087 * positive: success and return length sent.
1088 * -1 : error occured, and set errno.
1091 pfkey_send_spddump(so)
1096 if ((len = pfkey_send_x3(so, SADB_X_SPDDUMP, SADB_SATYPE_UNSPEC)) < 0)
1102 /* sending SADB_ADD or SADB_UPDATE message to the kernel */
1104 pfkey_send_x1(so, type, satype, mode, src, dst, spi, reqid, wsize,
1105 keymat, e_type, e_keylen, a_type, a_keylen, flags,
1106 l_alloc, l_bytes, l_addtime, l_usetime, seq)
1108 u_int type, satype, mode;
1109 struct sockaddr *src, *dst;
1110 u_int32_t spi, reqid;
1113 u_int e_type, e_keylen, a_type, a_keylen, flags;
1114 u_int32_t l_alloc, l_bytes, l_addtime, l_usetime, seq;
1116 struct sadb_msg *newmsg;
1122 /* validity check */
1123 if (src == NULL || dst == NULL) {
1124 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
1127 if (src->sa_family != dst->sa_family) {
1128 __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
1131 switch (src->sa_family) {
1133 plen = sizeof(struct in_addr) << 3;
1136 plen = sizeof(struct in6_addr) << 3;
1139 __ipsec_errcode = EIPSEC_INVAL_FAMILY;
1144 case SADB_SATYPE_ESP:
1145 if (e_type == SADB_EALG_NONE) {
1146 __ipsec_errcode = EIPSEC_NO_ALGS;
1150 case SADB_SATYPE_AH:
1151 if (e_type != SADB_EALG_NONE) {
1152 __ipsec_errcode = EIPSEC_INVAL_ALGS;
1155 if (a_type == SADB_AALG_NONE) {
1156 __ipsec_errcode = EIPSEC_NO_ALGS;
1160 case SADB_X_SATYPE_IPCOMP:
1161 if (e_type == SADB_X_CALG_NONE) {
1162 __ipsec_errcode = EIPSEC_INVAL_ALGS;
1165 if (a_type != SADB_AALG_NONE) {
1166 __ipsec_errcode = EIPSEC_NO_ALGS;
1170 case SADB_X_SATYPE_TCPSIGNATURE:
1171 if (e_type != SADB_EALG_NONE) {
1172 __ipsec_errcode = EIPSEC_INVAL_ALGS;
1175 if (a_type != SADB_X_AALG_TCP_MD5) {
1176 __ipsec_errcode = EIPSEC_INVAL_ALGS;
1181 __ipsec_errcode = EIPSEC_INVAL_SATYPE;
1185 /* create new sadb_msg to reply. */
1186 len = sizeof(struct sadb_msg)
1187 + sizeof(struct sadb_sa)
1188 + sizeof(struct sadb_x_sa2)
1189 + sizeof(struct sadb_address)
1190 + PFKEY_ALIGN8(src->sa_len)
1191 + sizeof(struct sadb_address)
1192 + PFKEY_ALIGN8(dst->sa_len)
1193 + sizeof(struct sadb_lifetime)
1194 + sizeof(struct sadb_lifetime);
1196 if (e_type != SADB_EALG_NONE)
1197 len += (sizeof(struct sadb_key) + PFKEY_ALIGN8(e_keylen));
1198 if (a_type != SADB_AALG_NONE)
1199 len += (sizeof(struct sadb_key) + PFKEY_ALIGN8(a_keylen));
1201 if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
1202 __ipsec_set_strerror(strerror(errno));
1205 ep = ((caddr_t)newmsg) + len;
1207 p = pfkey_setsadbmsg((caddr_t)newmsg, ep, type, len,
1208 satype, seq, getpid());
1213 p = pfkey_setsadbsa(p, ep, spi, wsize, a_type, e_type, flags);
1218 p = pfkey_setsadbxsa2(p, ep, mode, reqid);
1223 p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_SRC, src, plen,
1229 p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_DST, dst, plen,
1236 if (e_type != SADB_EALG_NONE) {
1237 p = pfkey_setsadbkey(p, ep, SADB_EXT_KEY_ENCRYPT,
1244 if (a_type != SADB_AALG_NONE) {
1245 p = pfkey_setsadbkey(p, ep, SADB_EXT_KEY_AUTH,
1246 keymat + e_keylen, a_keylen);
1253 /* set sadb_lifetime for destination */
1254 p = pfkey_setsadblifetime(p, ep, SADB_EXT_LIFETIME_HARD,
1255 l_alloc, l_bytes, l_addtime, l_usetime);
1260 p = pfkey_setsadblifetime(p, ep, SADB_EXT_LIFETIME_SOFT,
1261 l_alloc, l_bytes, l_addtime, l_usetime);
1262 if (!p || p != ep) {
1268 len = pfkey_send(so, newmsg, len);
1274 __ipsec_errcode = EIPSEC_NO_ERROR;
1278 /* sending SADB_DELETE or SADB_GET message to the kernel */
1280 pfkey_send_x2(so, type, satype, mode, src, dst, spi)
1282 u_int type, satype, mode;
1283 struct sockaddr *src, *dst;
1286 struct sadb_msg *newmsg;
1292 /* validity check */
1293 if (src == NULL || dst == NULL) {
1294 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
1297 if (src->sa_family != dst->sa_family) {
1298 __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
1301 switch (src->sa_family) {
1303 plen = sizeof(struct in_addr) << 3;
1306 plen = sizeof(struct in6_addr) << 3;
1309 __ipsec_errcode = EIPSEC_INVAL_FAMILY;
1313 /* create new sadb_msg to reply. */
1314 len = sizeof(struct sadb_msg)
1315 + sizeof(struct sadb_sa)
1316 + sizeof(struct sadb_address)
1317 + PFKEY_ALIGN8(src->sa_len)
1318 + sizeof(struct sadb_address)
1319 + PFKEY_ALIGN8(dst->sa_len);
1321 if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
1322 __ipsec_set_strerror(strerror(errno));
1325 ep = ((caddr_t)newmsg) + len;
1327 p = pfkey_setsadbmsg((caddr_t)newmsg, ep, type, len, satype, 0,
1333 p = pfkey_setsadbsa(p, ep, spi, 0, 0, 0, 0);
1338 p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_SRC, src, plen,
1344 p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_DST, dst, plen,
1346 if (!p || p != ep) {
1352 len = pfkey_send(so, newmsg, len);
1358 __ipsec_errcode = EIPSEC_NO_ERROR;
1363 * sending SADB_REGISTER, SADB_FLUSH, SADB_DUMP or SADB_X_PROMISC message
1367 pfkey_send_x3(so, type, satype)
1371 struct sadb_msg *newmsg;
1376 /* validity check */
1378 case SADB_X_PROMISC:
1379 if (satype != 0 && satype != 1) {
1380 __ipsec_errcode = EIPSEC_INVAL_SATYPE;
1386 case SADB_SATYPE_UNSPEC:
1387 case SADB_SATYPE_AH:
1388 case SADB_SATYPE_ESP:
1389 case SADB_X_SATYPE_IPCOMP:
1390 case SADB_X_SATYPE_TCPSIGNATURE:
1393 __ipsec_errcode = EIPSEC_INVAL_SATYPE;
1398 /* create new sadb_msg to send. */
1399 len = sizeof(struct sadb_msg);
1401 if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
1402 __ipsec_set_strerror(strerror(errno));
1405 ep = ((caddr_t)newmsg) + len;
1407 p = pfkey_setsadbmsg((caddr_t)newmsg, ep, type, len, satype, 0,
1409 if (!p || p != ep) {
1415 len = pfkey_send(so, newmsg, len);
1421 __ipsec_errcode = EIPSEC_NO_ERROR;
1425 /* sending SADB_X_SPDADD message to the kernel */
1427 pfkey_send_x4(so, type, src, prefs, dst, prefd, proto,
1428 ltime, vtime, policy, policylen, seq)
1430 struct sockaddr *src, *dst;
1431 u_int type, prefs, prefd, proto;
1432 u_int64_t ltime, vtime;
1437 struct sadb_msg *newmsg;
1443 /* validity check */
1444 if (src == NULL || dst == NULL) {
1445 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
1448 if (src->sa_family != dst->sa_family) {
1449 __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
1453 switch (src->sa_family) {
1455 plen = sizeof(struct in_addr) << 3;
1458 plen = sizeof(struct in6_addr) << 3;
1461 __ipsec_errcode = EIPSEC_INVAL_FAMILY;
1464 if (prefs > plen || prefd > plen) {
1465 __ipsec_errcode = EIPSEC_INVAL_PREFIXLEN;
1469 /* create new sadb_msg to reply. */
1470 len = sizeof(struct sadb_msg)
1471 + sizeof(struct sadb_address)
1472 + PFKEY_ALIGN8(src->sa_len)
1473 + sizeof(struct sadb_address)
1474 + PFKEY_ALIGN8(src->sa_len)
1475 + sizeof(struct sadb_lifetime)
1478 if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
1479 __ipsec_set_strerror(strerror(errno));
1482 ep = ((caddr_t)newmsg) + len;
1484 p = pfkey_setsadbmsg((caddr_t)newmsg, ep, type, len,
1485 SADB_SATYPE_UNSPEC, seq, getpid());
1490 p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_SRC, src, prefs, proto);
1495 p = pfkey_setsadbaddr(p, ep, SADB_EXT_ADDRESS_DST, dst, prefd, proto);
1500 p = pfkey_setsadblifetime(p, ep, SADB_EXT_LIFETIME_HARD,
1501 0, 0, ltime, vtime);
1502 if (!p || p + policylen != ep) {
1506 memcpy(p, policy, policylen);
1509 len = pfkey_send(so, newmsg, len);
1515 __ipsec_errcode = EIPSEC_NO_ERROR;
1519 /* sending SADB_X_SPDGET or SADB_X_SPDDELETE message to the kernel */
1521 pfkey_send_x5(so, type, spid)
1526 struct sadb_msg *newmsg;
1527 struct sadb_x_policy xpl;
1532 /* create new sadb_msg to reply. */
1533 len = sizeof(struct sadb_msg)
1536 if ((newmsg = CALLOC(len, struct sadb_msg *)) == NULL) {
1537 __ipsec_set_strerror(strerror(errno));
1540 ep = ((caddr_t)newmsg) + len;
1542 p = pfkey_setsadbmsg((caddr_t)newmsg, ep, type, len,
1543 SADB_SATYPE_UNSPEC, 0, getpid());
1549 if (p + sizeof(xpl) != ep) {
1553 memset(&xpl, 0, sizeof(xpl));
1554 xpl.sadb_x_policy_len = PFKEY_UNUNIT64(sizeof(xpl));
1555 xpl.sadb_x_policy_exttype = SADB_X_EXT_POLICY;
1556 xpl.sadb_x_policy_id = spid;
1557 memcpy(p, &xpl, sizeof(xpl));
1560 len = pfkey_send(so, newmsg, len);
1566 __ipsec_errcode = EIPSEC_NO_ERROR;
1574 * others : success and return value of socket.
1580 const int bufsiz = 128 * 1024; /*is 128K enough?*/
1582 if ((so = socket(PF_KEY, SOCK_RAW, PF_KEY_V2)) < 0) {
1583 __ipsec_set_strerror(strerror(errno));
1588 * This is a temporary workaround for KAME PR 154.
1589 * Don't really care even if it fails.
1591 (void)setsockopt(so, SOL_SOCKET, SO_SNDBUF, &bufsiz, sizeof(bufsiz));
1592 (void)setsockopt(so, SOL_SOCKET, SO_RCVBUF, &bufsiz, sizeof(bufsiz));
1594 __ipsec_errcode = EIPSEC_NO_ERROR;
1610 __ipsec_errcode = EIPSEC_NO_ERROR;
1615 * receive sadb_msg data, and return pointer to new buffer allocated.
1616 * Must free this buffer later.
1618 * NULL : error occured.
1619 * others : a pointer to sadb_msg structure.
1621 * XXX should be rewritten to pass length explicitly
1627 struct sadb_msg buf, *newmsg;
1630 while ((len = recv(so, (caddr_t)&buf, sizeof(buf), MSG_PEEK)) < 0) {
1633 __ipsec_set_strerror(strerror(errno));
1637 if (len < sizeof(buf)) {
1638 recv(so, (caddr_t)&buf, sizeof(buf), 0);
1639 __ipsec_errcode = EIPSEC_MAX;
1643 /* read real message */
1644 reallen = PFKEY_UNUNIT64(buf.sadb_msg_len);
1645 if ((newmsg = CALLOC(reallen, struct sadb_msg *)) == 0) {
1646 __ipsec_set_strerror(strerror(errno));
1650 while ((len = recv(so, (caddr_t)newmsg, reallen, 0)) < 0) {
1653 __ipsec_set_strerror(strerror(errno));
1658 if (len != reallen) {
1659 __ipsec_errcode = EIPSEC_SYSTEM_ERROR;
1664 /* don't trust what the kernel says, validate! */
1665 if (PFKEY_UNUNIT64(newmsg->sadb_msg_len) != len) {
1666 __ipsec_errcode = EIPSEC_SYSTEM_ERROR;
1671 __ipsec_errcode = EIPSEC_NO_ERROR;
1676 * send message to a socket.
1678 * others: success and return length sent.
1682 pfkey_send(so, msg, len)
1684 struct sadb_msg *msg;
1687 if ((len = send(so, (caddr_t)msg, len, 0)) < 0) {
1688 __ipsec_set_strerror(strerror(errno));
1692 __ipsec_errcode = EIPSEC_NO_ERROR;
1698 * NOTE: These functions are derived from netkey/key.c in KAME.
1701 * set the pointer to each header in this message buffer.
1702 * IN: msg: pointer to message buffer.
1703 * mhp: pointer to the buffer initialized like below:
1704 * caddr_t mhp[SADB_EXT_MAX + 1];
1708 * XXX should be rewritten to obtain length explicitly
1711 pfkey_align(msg, mhp)
1712 struct sadb_msg *msg;
1715 struct sadb_ext *ext;
1718 caddr_t ep; /* XXX should be passed from upper layer */
1720 /* validity check */
1721 if (msg == NULL || mhp == NULL) {
1722 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
1727 for (i = 0; i < SADB_EXT_MAX + 1; i++)
1730 mhp[0] = (caddr_t)msg;
1734 ep = p + PFKEY_UNUNIT64(msg->sadb_msg_len);
1736 /* skip base header */
1737 p += sizeof(struct sadb_msg);
1740 ext = (struct sadb_ext *)p;
1741 if (ep < p + sizeof(*ext) || PFKEY_EXTLEN(ext) < sizeof(*ext) ||
1742 ep < p + PFKEY_EXTLEN(ext)) {
1743 /* invalid format */
1747 /* duplicate check */
1748 /* XXX Are there duplication either KEY_AUTH or KEY_ENCRYPT ?*/
1749 if (mhp[ext->sadb_ext_type] != NULL) {
1750 __ipsec_errcode = EIPSEC_INVAL_EXTTYPE;
1755 switch (ext->sadb_ext_type) {
1757 case SADB_EXT_LIFETIME_CURRENT:
1758 case SADB_EXT_LIFETIME_HARD:
1759 case SADB_EXT_LIFETIME_SOFT:
1760 case SADB_EXT_ADDRESS_SRC:
1761 case SADB_EXT_ADDRESS_DST:
1762 case SADB_EXT_ADDRESS_PROXY:
1763 case SADB_EXT_KEY_AUTH:
1764 /* XXX should to be check weak keys. */
1765 case SADB_EXT_KEY_ENCRYPT:
1766 /* XXX should to be check weak keys. */
1767 case SADB_EXT_IDENTITY_SRC:
1768 case SADB_EXT_IDENTITY_DST:
1769 case SADB_EXT_SENSITIVITY:
1770 case SADB_EXT_PROPOSAL:
1771 case SADB_EXT_SUPPORTED_AUTH:
1772 case SADB_EXT_SUPPORTED_ENCRYPT:
1773 case SADB_EXT_SPIRANGE:
1774 case SADB_X_EXT_POLICY:
1775 case SADB_X_EXT_SA2:
1776 mhp[ext->sadb_ext_type] = (caddr_t)ext;
1779 __ipsec_errcode = EIPSEC_INVAL_EXTTYPE;
1783 p += PFKEY_EXTLEN(ext);
1787 __ipsec_errcode = EIPSEC_INVAL_SADBMSG;
1791 __ipsec_errcode = EIPSEC_NO_ERROR;
1796 * check basic usage for sadb_msg,
1797 * NOTE: This routine is derived from netkey/key.c in KAME.
1798 * IN: msg: pointer to message buffer.
1799 * mhp: pointer to the buffer initialized like below:
1801 * caddr_t mhp[SADB_EXT_MAX + 1];
1810 struct sadb_msg *msg;
1812 /* validity check */
1813 if (mhp == NULL || mhp[0] == NULL) {
1814 __ipsec_errcode = EIPSEC_INVAL_ARGUMENT;
1818 msg = (struct sadb_msg *)mhp[0];
1821 if (msg->sadb_msg_version != PF_KEY_V2) {
1822 __ipsec_errcode = EIPSEC_INVAL_VERSION;
1827 if (msg->sadb_msg_type > SADB_MAX) {
1828 __ipsec_errcode = EIPSEC_INVAL_MSGTYPE;
1833 switch (msg->sadb_msg_satype) {
1834 case SADB_SATYPE_UNSPEC:
1835 switch (msg->sadb_msg_type) {
1843 __ipsec_errcode = EIPSEC_INVAL_SATYPE;
1847 case SADB_SATYPE_ESP:
1848 case SADB_SATYPE_AH:
1849 case SADB_X_SATYPE_IPCOMP:
1850 case SADB_X_SATYPE_TCPSIGNATURE:
1851 switch (msg->sadb_msg_type) {
1853 case SADB_X_SPDDELETE:
1855 case SADB_X_SPDDUMP:
1856 case SADB_X_SPDFLUSH:
1857 __ipsec_errcode = EIPSEC_INVAL_SATYPE;
1861 case SADB_SATYPE_RSVP:
1862 case SADB_SATYPE_OSPFV2:
1863 case SADB_SATYPE_RIPV2:
1864 case SADB_SATYPE_MIP:
1865 __ipsec_errcode = EIPSEC_NOT_SUPPORTED;
1867 case 1: /* XXX: What does it do ? */
1868 if (msg->sadb_msg_type == SADB_X_PROMISC)
1872 __ipsec_errcode = EIPSEC_INVAL_SATYPE;
1876 /* check field of upper layer protocol and address family */
1877 if (mhp[SADB_EXT_ADDRESS_SRC] != NULL
1878 && mhp[SADB_EXT_ADDRESS_DST] != NULL) {
1879 struct sadb_address *src0, *dst0;
1881 src0 = (struct sadb_address *)(mhp[SADB_EXT_ADDRESS_SRC]);
1882 dst0 = (struct sadb_address *)(mhp[SADB_EXT_ADDRESS_DST]);
1884 if (src0->sadb_address_proto != dst0->sadb_address_proto) {
1885 __ipsec_errcode = EIPSEC_PROTO_MISMATCH;
1889 if (PFKEY_ADDR_SADDR(src0)->sa_family
1890 != PFKEY_ADDR_SADDR(dst0)->sa_family) {
1891 __ipsec_errcode = EIPSEC_FAMILY_MISMATCH;
1895 switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
1900 __ipsec_errcode = EIPSEC_INVAL_FAMILY;
1905 * prefixlen == 0 is valid because there must be the case
1906 * all addresses are matched.
1910 __ipsec_errcode = EIPSEC_NO_ERROR;
1915 * set data into sadb_msg.
1916 * `buf' must has been allocated sufficiently.
1919 pfkey_setsadbmsg(buf, lim, type, tlen, satype, seq, pid)
1930 p = (struct sadb_msg *)buf;
1931 len = sizeof(struct sadb_msg);
1933 if (buf + len > lim)
1937 p->sadb_msg_version = PF_KEY_V2;
1938 p->sadb_msg_type = type;
1939 p->sadb_msg_errno = 0;
1940 p->sadb_msg_satype = satype;
1941 p->sadb_msg_len = PFKEY_UNIT64(tlen);
1942 p->sadb_msg_reserved = 0;
1943 p->sadb_msg_seq = seq;
1944 p->sadb_msg_pid = (u_int32_t)pid;
1950 * copy secasvar data into sadb_address.
1951 * `buf' must has been allocated sufficiently.
1954 pfkey_setsadbsa(buf, lim, spi, wsize, auth, enc, flags)
1957 u_int32_t spi, flags;
1958 u_int wsize, auth, enc;
1963 p = (struct sadb_sa *)buf;
1964 len = sizeof(struct sadb_sa);
1966 if (buf + len > lim)
1970 p->sadb_sa_len = PFKEY_UNIT64(len);
1971 p->sadb_sa_exttype = SADB_EXT_SA;
1972 p->sadb_sa_spi = spi;
1973 p->sadb_sa_replay = wsize;
1974 p->sadb_sa_state = SADB_SASTATE_LARVAL;
1975 p->sadb_sa_auth = auth;
1976 p->sadb_sa_encrypt = enc;
1977 p->sadb_sa_flags = flags;
1983 * set data into sadb_address.
1984 * `buf' must has been allocated sufficiently.
1985 * prefixlen is in bits.
1988 pfkey_setsadbaddr(buf, lim, exttype, saddr, prefixlen, ul_proto)
1992 struct sockaddr *saddr;
1996 struct sadb_address *p;
1999 p = (struct sadb_address *)buf;
2000 len = sizeof(struct sadb_address) + PFKEY_ALIGN8(saddr->sa_len);
2002 if (buf + len > lim)
2006 p->sadb_address_len = PFKEY_UNIT64(len);
2007 p->sadb_address_exttype = exttype & 0xffff;
2008 p->sadb_address_proto = ul_proto & 0xff;
2009 p->sadb_address_prefixlen = prefixlen;
2010 p->sadb_address_reserved = 0;
2012 memcpy(p + 1, saddr, saddr->sa_len);
2018 * set sadb_key structure after clearing buffer with zero.
2019 * OUT: the pointer of buf + len.
2022 pfkey_setsadbkey(buf, lim, type, key, keylen)
2031 p = (struct sadb_key *)buf;
2032 len = sizeof(struct sadb_key) + PFKEY_ALIGN8(keylen);
2034 if (buf + len > lim)
2038 p->sadb_key_len = PFKEY_UNIT64(len);
2039 p->sadb_key_exttype = type;
2040 p->sadb_key_bits = keylen << 3;
2041 p->sadb_key_reserved = 0;
2043 memcpy(p + 1, key, keylen);
2049 * set sadb_lifetime structure after clearing buffer with zero.
2050 * OUT: the pointer of buf + len.
2053 pfkey_setsadblifetime(buf, lim, type, l_alloc, l_bytes, l_addtime, l_usetime)
2057 u_int32_t l_alloc, l_bytes, l_addtime, l_usetime;
2059 struct sadb_lifetime *p;
2062 p = (struct sadb_lifetime *)buf;
2063 len = sizeof(struct sadb_lifetime);
2065 if (buf + len > lim)
2069 p->sadb_lifetime_len = PFKEY_UNIT64(len);
2070 p->sadb_lifetime_exttype = type;
2073 case SADB_EXT_LIFETIME_SOFT:
2074 p->sadb_lifetime_allocations
2075 = (l_alloc * soft_lifetime_allocations_rate) /100;
2076 p->sadb_lifetime_bytes
2077 = (l_bytes * soft_lifetime_bytes_rate) /100;
2078 p->sadb_lifetime_addtime
2079 = (l_addtime * soft_lifetime_addtime_rate) /100;
2080 p->sadb_lifetime_usetime
2081 = (l_usetime * soft_lifetime_usetime_rate) /100;
2083 case SADB_EXT_LIFETIME_HARD:
2084 p->sadb_lifetime_allocations = l_alloc;
2085 p->sadb_lifetime_bytes = l_bytes;
2086 p->sadb_lifetime_addtime = l_addtime;
2087 p->sadb_lifetime_usetime = l_usetime;
2095 * copy secasvar data into sadb_address.
2096 * `buf' must has been allocated sufficiently.
2099 pfkey_setsadbxsa2(buf, lim, mode0, reqid)
2105 struct sadb_x_sa2 *p;
2106 u_int8_t mode = mode0 & 0xff;
2109 p = (struct sadb_x_sa2 *)buf;
2110 len = sizeof(struct sadb_x_sa2);
2112 if (buf + len > lim)
2116 p->sadb_x_sa2_len = PFKEY_UNIT64(len);
2117 p->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
2118 p->sadb_x_sa2_mode = mode;
2119 p->sadb_x_sa2_reqid = reqid;