2 /* $KAME: key.c,v 1.191 2001/06/27 10:46:49 sakane Exp $ */
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * This code is referd to RFC 2367
38 #include "opt_inet6.h"
39 #include "opt_ipsec.h"
41 #include <sys/types.h>
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
46 #include <sys/mutex.h>
48 #include <sys/domain.h>
49 #include <sys/protosw.h>
50 #include <sys/malloc.h>
51 #include <sys/socket.h>
52 #include <sys/socketvar.h>
53 #include <sys/sysctl.h>
54 #include <sys/errno.h>
56 #include <sys/queue.h>
57 #include <sys/refcount.h>
58 #include <sys/syslog.h>
61 #include <net/route.h>
62 #include <net/raw_cb.h>
65 #include <netinet/in.h>
66 #include <netinet/in_systm.h>
67 #include <netinet/ip.h>
68 #include <netinet/in_var.h>
71 #include <netinet/ip6.h>
72 #include <netinet6/in6_var.h>
73 #include <netinet6/ip6_var.h>
76 #if defined(INET) || defined(INET6)
77 #include <netinet/in_pcb.h>
80 #include <netinet6/in6_pcb.h>
83 #include <net/pfkeyv2.h>
84 #include <netipsec/keydb.h>
85 #include <netipsec/key.h>
86 #include <netipsec/keysock.h>
87 #include <netipsec/key_debug.h>
89 #include <netipsec/ipsec.h>
91 #include <netipsec/ipsec6.h>
94 #include <netipsec/xform.h>
96 #include <machine/stdarg.h>
99 #include <sys/random.h>
101 #define FULLMASK 0xff
102 #define _BITS(bytes) ((bytes) << 3)
105 * Note on SA reference counting:
106 * - SAs that are not in DEAD state will have (total external reference + 1)
107 * following value in reference count field. they cannot be freed and are
108 * referenced from SA header.
109 * - SAs that are in DEAD state will have (total external reference)
110 * in reference count field. they are ready to be freed. reference from
111 * SA header will be removed in key_delsav(), when the reference count
112 * field hits 0 (= no external reference other than from SA header.
115 VNET_DEFINE(u_int32_t, key_debug_level) = 0;
116 static VNET_DEFINE(u_int, key_spi_trycnt) = 1000;
117 static VNET_DEFINE(u_int32_t, key_spi_minval) = 0x100;
118 static VNET_DEFINE(u_int32_t, key_spi_maxval) = 0x0fffffff; /* XXX */
119 static VNET_DEFINE(u_int32_t, policy_id) = 0;
120 /*interval to initialize randseed,1(m)*/
121 static VNET_DEFINE(u_int, key_int_random) = 60;
122 /* interval to expire acquiring, 30(s)*/
123 static VNET_DEFINE(u_int, key_larval_lifetime) = 30;
124 /* counter for blocking SADB_ACQUIRE.*/
125 static VNET_DEFINE(int, key_blockacq_count) = 10;
126 /* lifetime for blocking SADB_ACQUIRE.*/
127 static VNET_DEFINE(int, key_blockacq_lifetime) = 20;
128 /* preferred old sa rather than new sa.*/
129 static VNET_DEFINE(int, key_preferred_oldsa) = 1;
130 #define V_key_spi_trycnt VNET(key_spi_trycnt)
131 #define V_key_spi_minval VNET(key_spi_minval)
132 #define V_key_spi_maxval VNET(key_spi_maxval)
133 #define V_policy_id VNET(policy_id)
134 #define V_key_int_random VNET(key_int_random)
135 #define V_key_larval_lifetime VNET(key_larval_lifetime)
136 #define V_key_blockacq_count VNET(key_blockacq_count)
137 #define V_key_blockacq_lifetime VNET(key_blockacq_lifetime)
138 #define V_key_preferred_oldsa VNET(key_preferred_oldsa)
140 static VNET_DEFINE(u_int32_t, acq_seq) = 0;
141 #define V_acq_seq VNET(acq_seq)
144 static VNET_DEFINE(LIST_HEAD(_sptree, secpolicy), sptree[IPSEC_DIR_MAX]);
145 #define V_sptree VNET(sptree)
146 static struct mtx sptree_lock;
147 #define SPTREE_LOCK_INIT() \
148 mtx_init(&sptree_lock, "sptree", \
149 "fast ipsec security policy database", MTX_DEF)
150 #define SPTREE_LOCK_DESTROY() mtx_destroy(&sptree_lock)
151 #define SPTREE_LOCK() mtx_lock(&sptree_lock)
152 #define SPTREE_UNLOCK() mtx_unlock(&sptree_lock)
153 #define SPTREE_LOCK_ASSERT() mtx_assert(&sptree_lock, MA_OWNED)
155 static VNET_DEFINE(LIST_HEAD(_sahtree, secashead), sahtree); /* SAD */
156 #define V_sahtree VNET(sahtree)
157 static struct mtx sahtree_lock;
158 #define SAHTREE_LOCK_INIT() \
159 mtx_init(&sahtree_lock, "sahtree", \
160 "fast ipsec security association database", MTX_DEF)
161 #define SAHTREE_LOCK_DESTROY() mtx_destroy(&sahtree_lock)
162 #define SAHTREE_LOCK() mtx_lock(&sahtree_lock)
163 #define SAHTREE_UNLOCK() mtx_unlock(&sahtree_lock)
164 #define SAHTREE_LOCK_ASSERT() mtx_assert(&sahtree_lock, MA_OWNED)
167 static VNET_DEFINE(LIST_HEAD(_regtree, secreg), regtree[SADB_SATYPE_MAX + 1]);
168 #define V_regtree VNET(regtree)
169 static struct mtx regtree_lock;
170 #define REGTREE_LOCK_INIT() \
171 mtx_init(®tree_lock, "regtree", "fast ipsec regtree", MTX_DEF)
172 #define REGTREE_LOCK_DESTROY() mtx_destroy(®tree_lock)
173 #define REGTREE_LOCK() mtx_lock(®tree_lock)
174 #define REGTREE_UNLOCK() mtx_unlock(®tree_lock)
175 #define REGTREE_LOCK_ASSERT() mtx_assert(®tree_lock, MA_OWNED)
177 static VNET_DEFINE(LIST_HEAD(_acqtree, secacq), acqtree); /* acquiring list */
178 #define V_acqtree VNET(acqtree)
179 static struct mtx acq_lock;
180 #define ACQ_LOCK_INIT() \
181 mtx_init(&acq_lock, "acqtree", "fast ipsec acquire list", MTX_DEF)
182 #define ACQ_LOCK_DESTROY() mtx_destroy(&acq_lock)
183 #define ACQ_LOCK() mtx_lock(&acq_lock)
184 #define ACQ_UNLOCK() mtx_unlock(&acq_lock)
185 #define ACQ_LOCK_ASSERT() mtx_assert(&acq_lock, MA_OWNED)
187 /* SP acquiring list */
188 static VNET_DEFINE(LIST_HEAD(_spacqtree, secspacq), spacqtree);
189 #define V_spacqtree VNET(spacqtree)
190 static struct mtx spacq_lock;
191 #define SPACQ_LOCK_INIT() \
192 mtx_init(&spacq_lock, "spacqtree", \
193 "fast ipsec security policy acquire list", MTX_DEF)
194 #define SPACQ_LOCK_DESTROY() mtx_destroy(&spacq_lock)
195 #define SPACQ_LOCK() mtx_lock(&spacq_lock)
196 #define SPACQ_UNLOCK() mtx_unlock(&spacq_lock)
197 #define SPACQ_LOCK_ASSERT() mtx_assert(&spacq_lock, MA_OWNED)
199 /* search order for SAs */
200 static const u_int saorder_state_valid_prefer_old[] = {
201 SADB_SASTATE_DYING, SADB_SASTATE_MATURE,
203 static const u_int saorder_state_valid_prefer_new[] = {
204 SADB_SASTATE_MATURE, SADB_SASTATE_DYING,
206 static const u_int saorder_state_alive[] = {
208 SADB_SASTATE_MATURE, SADB_SASTATE_DYING, SADB_SASTATE_LARVAL
210 static const u_int saorder_state_any[] = {
211 SADB_SASTATE_MATURE, SADB_SASTATE_DYING,
212 SADB_SASTATE_LARVAL, SADB_SASTATE_DEAD
215 static const int minsize[] = {
216 sizeof(struct sadb_msg), /* SADB_EXT_RESERVED */
217 sizeof(struct sadb_sa), /* SADB_EXT_SA */
218 sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_CURRENT */
219 sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_HARD */
220 sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_SOFT */
221 sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_SRC */
222 sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_DST */
223 sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_PROXY */
224 sizeof(struct sadb_key), /* SADB_EXT_KEY_AUTH */
225 sizeof(struct sadb_key), /* SADB_EXT_KEY_ENCRYPT */
226 sizeof(struct sadb_ident), /* SADB_EXT_IDENTITY_SRC */
227 sizeof(struct sadb_ident), /* SADB_EXT_IDENTITY_DST */
228 sizeof(struct sadb_sens), /* SADB_EXT_SENSITIVITY */
229 sizeof(struct sadb_prop), /* SADB_EXT_PROPOSAL */
230 sizeof(struct sadb_supported), /* SADB_EXT_SUPPORTED_AUTH */
231 sizeof(struct sadb_supported), /* SADB_EXT_SUPPORTED_ENCRYPT */
232 sizeof(struct sadb_spirange), /* SADB_EXT_SPIRANGE */
233 0, /* SADB_X_EXT_KMPRIVATE */
234 sizeof(struct sadb_x_policy), /* SADB_X_EXT_POLICY */
235 sizeof(struct sadb_x_sa2), /* SADB_X_SA2 */
236 sizeof(struct sadb_x_nat_t_type),/* SADB_X_EXT_NAT_T_TYPE */
237 sizeof(struct sadb_x_nat_t_port),/* SADB_X_EXT_NAT_T_SPORT */
238 sizeof(struct sadb_x_nat_t_port),/* SADB_X_EXT_NAT_T_DPORT */
239 sizeof(struct sadb_address), /* SADB_X_EXT_NAT_T_OAI */
240 sizeof(struct sadb_address), /* SADB_X_EXT_NAT_T_OAR */
241 sizeof(struct sadb_x_nat_t_frag),/* SADB_X_EXT_NAT_T_FRAG */
243 static const int maxsize[] = {
244 sizeof(struct sadb_msg), /* SADB_EXT_RESERVED */
245 sizeof(struct sadb_sa), /* SADB_EXT_SA */
246 sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_CURRENT */
247 sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_HARD */
248 sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_SOFT */
249 0, /* SADB_EXT_ADDRESS_SRC */
250 0, /* SADB_EXT_ADDRESS_DST */
251 0, /* SADB_EXT_ADDRESS_PROXY */
252 0, /* SADB_EXT_KEY_AUTH */
253 0, /* SADB_EXT_KEY_ENCRYPT */
254 0, /* SADB_EXT_IDENTITY_SRC */
255 0, /* SADB_EXT_IDENTITY_DST */
256 0, /* SADB_EXT_SENSITIVITY */
257 0, /* SADB_EXT_PROPOSAL */
258 0, /* SADB_EXT_SUPPORTED_AUTH */
259 0, /* SADB_EXT_SUPPORTED_ENCRYPT */
260 sizeof(struct sadb_spirange), /* SADB_EXT_SPIRANGE */
261 0, /* SADB_X_EXT_KMPRIVATE */
262 0, /* SADB_X_EXT_POLICY */
263 sizeof(struct sadb_x_sa2), /* SADB_X_SA2 */
264 sizeof(struct sadb_x_nat_t_type),/* SADB_X_EXT_NAT_T_TYPE */
265 sizeof(struct sadb_x_nat_t_port),/* SADB_X_EXT_NAT_T_SPORT */
266 sizeof(struct sadb_x_nat_t_port),/* SADB_X_EXT_NAT_T_DPORT */
267 0, /* SADB_X_EXT_NAT_T_OAI */
268 0, /* SADB_X_EXT_NAT_T_OAR */
269 sizeof(struct sadb_x_nat_t_frag),/* SADB_X_EXT_NAT_T_FRAG */
272 static VNET_DEFINE(int, ipsec_esp_keymin) = 256;
273 static VNET_DEFINE(int, ipsec_esp_auth) = 0;
274 static VNET_DEFINE(int, ipsec_ah_keymin) = 128;
276 #define V_ipsec_esp_keymin VNET(ipsec_esp_keymin)
277 #define V_ipsec_esp_auth VNET(ipsec_esp_auth)
278 #define V_ipsec_ah_keymin VNET(ipsec_ah_keymin)
281 SYSCTL_DECL(_net_key);
284 SYSCTL_VNET_INT(_net_key, KEYCTL_DEBUG_LEVEL, debug,
285 CTLFLAG_RW, &VNET_NAME(key_debug_level), 0, "");
287 /* max count of trial for the decision of spi value */
288 SYSCTL_VNET_INT(_net_key, KEYCTL_SPI_TRY, spi_trycnt,
289 CTLFLAG_RW, &VNET_NAME(key_spi_trycnt), 0, "");
291 /* minimum spi value to allocate automatically. */
292 SYSCTL_VNET_INT(_net_key, KEYCTL_SPI_MIN_VALUE,
293 spi_minval, CTLFLAG_RW, &VNET_NAME(key_spi_minval), 0, "");
295 /* maximun spi value to allocate automatically. */
296 SYSCTL_VNET_INT(_net_key, KEYCTL_SPI_MAX_VALUE,
297 spi_maxval, CTLFLAG_RW, &VNET_NAME(key_spi_maxval), 0, "");
299 /* interval to initialize randseed */
300 SYSCTL_VNET_INT(_net_key, KEYCTL_RANDOM_INT,
301 int_random, CTLFLAG_RW, &VNET_NAME(key_int_random), 0, "");
303 /* lifetime for larval SA */
304 SYSCTL_VNET_INT(_net_key, KEYCTL_LARVAL_LIFETIME,
305 larval_lifetime, CTLFLAG_RW, &VNET_NAME(key_larval_lifetime), 0, "");
307 /* counter for blocking to send SADB_ACQUIRE to IKEd */
308 SYSCTL_VNET_INT(_net_key, KEYCTL_BLOCKACQ_COUNT,
309 blockacq_count, CTLFLAG_RW, &VNET_NAME(key_blockacq_count), 0, "");
311 /* lifetime for blocking to send SADB_ACQUIRE to IKEd */
312 SYSCTL_VNET_INT(_net_key, KEYCTL_BLOCKACQ_LIFETIME,
313 blockacq_lifetime, CTLFLAG_RW, &VNET_NAME(key_blockacq_lifetime), 0, "");
316 SYSCTL_VNET_INT(_net_key, KEYCTL_ESP_AUTH, esp_auth,
317 CTLFLAG_RW, &VNET_NAME(ipsec_esp_auth), 0, "");
319 /* minimum ESP key length */
320 SYSCTL_VNET_INT(_net_key, KEYCTL_ESP_KEYMIN,
321 esp_keymin, CTLFLAG_RW, &VNET_NAME(ipsec_esp_keymin), 0, "");
323 /* minimum AH key length */
324 SYSCTL_VNET_INT(_net_key, KEYCTL_AH_KEYMIN, ah_keymin,
325 CTLFLAG_RW, &VNET_NAME(ipsec_ah_keymin), 0, "");
327 /* perfered old SA rather than new SA */
328 SYSCTL_VNET_INT(_net_key, KEYCTL_PREFERED_OLDSA,
329 preferred_oldsa, CTLFLAG_RW, &VNET_NAME(key_preferred_oldsa), 0, "");
331 #define __LIST_CHAINED(elm) \
332 (!((elm)->chain.le_next == NULL && (elm)->chain.le_prev == NULL))
333 #define LIST_INSERT_TAIL(head, elm, type, field) \
335 struct type *curelm = LIST_FIRST(head); \
336 if (curelm == NULL) {\
337 LIST_INSERT_HEAD(head, elm, field); \
339 while (LIST_NEXT(curelm, field)) \
340 curelm = LIST_NEXT(curelm, field);\
341 LIST_INSERT_AFTER(curelm, elm, field);\
345 #define KEY_CHKSASTATE(head, sav, name) \
347 if ((head) != (sav)) { \
348 ipseclog((LOG_DEBUG, "%s: state mismatched (TREE=%d SA=%d)\n", \
349 (name), (head), (sav))); \
354 #define KEY_CHKSPDIR(head, sp, name) \
356 if ((head) != (sp)) { \
357 ipseclog((LOG_DEBUG, "%s: direction mismatched (TREE=%d SP=%d), " \
358 "anyway continue.\n", \
359 (name), (head), (sp))); \
363 MALLOC_DEFINE(M_IPSEC_SA, "secasvar", "ipsec security association");
364 MALLOC_DEFINE(M_IPSEC_SAH, "sahead", "ipsec sa head");
365 MALLOC_DEFINE(M_IPSEC_SP, "ipsecpolicy", "ipsec security policy");
366 MALLOC_DEFINE(M_IPSEC_SR, "ipsecrequest", "ipsec security request");
367 MALLOC_DEFINE(M_IPSEC_MISC, "ipsec-misc", "ipsec miscellaneous");
368 MALLOC_DEFINE(M_IPSEC_SAQ, "ipsec-saq", "ipsec sa acquire");
369 MALLOC_DEFINE(M_IPSEC_SAR, "ipsec-reg", "ipsec sa acquire");
372 * set parameters into secpolicyindex buffer.
373 * Must allocate secpolicyindex buffer passed to this function.
375 #define KEY_SETSECSPIDX(_dir, s, d, ps, pd, ulp, idx) \
377 bzero((idx), sizeof(struct secpolicyindex)); \
378 (idx)->dir = (_dir); \
379 (idx)->prefs = (ps); \
380 (idx)->prefd = (pd); \
381 (idx)->ul_proto = (ulp); \
382 bcopy((s), &(idx)->src, ((const struct sockaddr *)(s))->sa_len); \
383 bcopy((d), &(idx)->dst, ((const struct sockaddr *)(d))->sa_len); \
387 * set parameters into secasindex buffer.
388 * Must allocate secasindex buffer before calling this function.
390 #define KEY_SETSECASIDX(p, m, r, s, d, idx) \
392 bzero((idx), sizeof(struct secasindex)); \
393 (idx)->proto = (p); \
395 (idx)->reqid = (r); \
396 bcopy((s), &(idx)->src, ((const struct sockaddr *)(s))->sa_len); \
397 bcopy((d), &(idx)->dst, ((const struct sockaddr *)(d))->sa_len); \
402 u_long getspi_count; /* the avarage of count to try to get new SPI */
406 struct sadb_msg *msg;
407 struct sadb_ext *ext[SADB_EXT_MAX + 1];
408 int extoff[SADB_EXT_MAX + 1];
409 int extlen[SADB_EXT_MAX + 1];
412 static struct secasvar *key_allocsa_policy __P((const struct secasindex *));
413 static void key_freesp_so __P((struct secpolicy **));
414 static struct secasvar *key_do_allocsa_policy __P((struct secashead *, u_int));
415 static void key_delsp __P((struct secpolicy *));
416 static struct secpolicy *key_getsp __P((struct secpolicyindex *));
417 static void _key_delsp(struct secpolicy *sp);
418 static struct secpolicy *key_getspbyid __P((u_int32_t));
419 static u_int32_t key_newreqid __P((void));
420 static struct mbuf *key_gather_mbuf __P((struct mbuf *,
421 const struct sadb_msghdr *, int, int, ...));
422 static int key_spdadd __P((struct socket *, struct mbuf *,
423 const struct sadb_msghdr *));
424 static u_int32_t key_getnewspid __P((void));
425 static int key_spddelete __P((struct socket *, struct mbuf *,
426 const struct sadb_msghdr *));
427 static int key_spddelete2 __P((struct socket *, struct mbuf *,
428 const struct sadb_msghdr *));
429 static int key_spdget __P((struct socket *, struct mbuf *,
430 const struct sadb_msghdr *));
431 static int key_spdflush __P((struct socket *, struct mbuf *,
432 const struct sadb_msghdr *));
433 static int key_spddump __P((struct socket *, struct mbuf *,
434 const struct sadb_msghdr *));
435 static struct mbuf *key_setdumpsp __P((struct secpolicy *,
436 u_int8_t, u_int32_t, u_int32_t));
437 static u_int key_getspreqmsglen __P((struct secpolicy *));
438 static int key_spdexpire __P((struct secpolicy *));
439 static struct secashead *key_newsah __P((struct secasindex *));
440 static void key_delsah __P((struct secashead *));
441 static struct secasvar *key_newsav __P((struct mbuf *,
442 const struct sadb_msghdr *, struct secashead *, int *,
444 #define KEY_NEWSAV(m, sadb, sah, e) \
445 key_newsav(m, sadb, sah, e, __FILE__, __LINE__)
446 static void key_delsav __P((struct secasvar *));
447 static struct secashead *key_getsah __P((struct secasindex *));
448 static struct secasvar *key_checkspidup __P((struct secasindex *, u_int32_t));
449 static struct secasvar *key_getsavbyspi __P((struct secashead *, u_int32_t));
450 static int key_setsaval __P((struct secasvar *, struct mbuf *,
451 const struct sadb_msghdr *));
452 static int key_mature __P((struct secasvar *));
453 static struct mbuf *key_setdumpsa __P((struct secasvar *, u_int8_t,
454 u_int8_t, u_int32_t, u_int32_t));
455 static struct mbuf *key_setsadbmsg __P((u_int8_t, u_int16_t, u_int8_t,
456 u_int32_t, pid_t, u_int16_t));
457 static struct mbuf *key_setsadbsa __P((struct secasvar *));
458 static struct mbuf *key_setsadbaddr __P((u_int16_t,
459 const struct sockaddr *, u_int8_t, u_int16_t));
461 static struct mbuf *key_setsadbxport(u_int16_t, u_int16_t);
462 static struct mbuf *key_setsadbxtype(u_int16_t);
464 static void key_porttosaddr(struct sockaddr *, u_int16_t);
465 #define KEY_PORTTOSADDR(saddr, port) \
466 key_porttosaddr((struct sockaddr *)(saddr), (port))
467 static struct mbuf *key_setsadbxsa2 __P((u_int8_t, u_int32_t, u_int32_t));
468 static struct mbuf *key_setsadbxpolicy __P((u_int16_t, u_int8_t,
470 static struct seckey *key_dup_keymsg(const struct sadb_key *, u_int,
471 struct malloc_type *);
472 static struct seclifetime *key_dup_lifemsg(const struct sadb_lifetime *src,
473 struct malloc_type *type);
475 static int key_ismyaddr6 __P((struct sockaddr_in6 *));
478 /* flags for key_cmpsaidx() */
479 #define CMP_HEAD 1 /* protocol, addresses. */
480 #define CMP_MODE_REQID 2 /* additionally HEAD, reqid, mode. */
481 #define CMP_REQID 3 /* additionally HEAD, reaid. */
482 #define CMP_EXACTLY 4 /* all elements. */
483 static int key_cmpsaidx
484 __P((const struct secasindex *, const struct secasindex *, int));
486 static int key_cmpspidx_exactly
487 __P((struct secpolicyindex *, struct secpolicyindex *));
488 static int key_cmpspidx_withmask
489 __P((struct secpolicyindex *, struct secpolicyindex *));
490 static int key_sockaddrcmp __P((const struct sockaddr *, const struct sockaddr *, int));
491 static int key_bbcmp __P((const void *, const void *, u_int));
492 static u_int16_t key_satype2proto __P((u_int8_t));
493 static u_int8_t key_proto2satype __P((u_int16_t));
495 static int key_getspi __P((struct socket *, struct mbuf *,
496 const struct sadb_msghdr *));
497 static u_int32_t key_do_getnewspi __P((struct sadb_spirange *,
498 struct secasindex *));
499 static int key_update __P((struct socket *, struct mbuf *,
500 const struct sadb_msghdr *));
501 #ifdef IPSEC_DOSEQCHECK
502 static struct secasvar *key_getsavbyseq __P((struct secashead *, u_int32_t));
504 static int key_add __P((struct socket *, struct mbuf *,
505 const struct sadb_msghdr *));
506 static int key_setident __P((struct secashead *, struct mbuf *,
507 const struct sadb_msghdr *));
508 static struct mbuf *key_getmsgbuf_x1 __P((struct mbuf *,
509 const struct sadb_msghdr *));
510 static int key_delete __P((struct socket *, struct mbuf *,
511 const struct sadb_msghdr *));
512 static int key_get __P((struct socket *, struct mbuf *,
513 const struct sadb_msghdr *));
515 static void key_getcomb_setlifetime __P((struct sadb_comb *));
516 static struct mbuf *key_getcomb_esp __P((void));
517 static struct mbuf *key_getcomb_ah __P((void));
518 static struct mbuf *key_getcomb_ipcomp __P((void));
519 static struct mbuf *key_getprop __P((const struct secasindex *));
521 static int key_acquire __P((const struct secasindex *, struct secpolicy *));
522 static struct secacq *key_newacq __P((const struct secasindex *));
523 static struct secacq *key_getacq __P((const struct secasindex *));
524 static struct secacq *key_getacqbyseq __P((u_int32_t));
525 static struct secspacq *key_newspacq __P((struct secpolicyindex *));
526 static struct secspacq *key_getspacq __P((struct secpolicyindex *));
527 static int key_acquire2 __P((struct socket *, struct mbuf *,
528 const struct sadb_msghdr *));
529 static int key_register __P((struct socket *, struct mbuf *,
530 const struct sadb_msghdr *));
531 static int key_expire __P((struct secasvar *));
532 static int key_flush __P((struct socket *, struct mbuf *,
533 const struct sadb_msghdr *));
534 static int key_dump __P((struct socket *, struct mbuf *,
535 const struct sadb_msghdr *));
536 static int key_promisc __P((struct socket *, struct mbuf *,
537 const struct sadb_msghdr *));
538 static int key_senderror __P((struct socket *, struct mbuf *, int));
539 static int key_validate_ext __P((const struct sadb_ext *, int));
540 static int key_align __P((struct mbuf *, struct sadb_msghdr *));
541 static struct mbuf *key_setlifetime(struct seclifetime *src,
543 static struct mbuf *key_setkey(struct seckey *src, u_int16_t exttype);
546 static const char *key_getfqdn __P((void));
547 static const char *key_getuserfqdn __P((void));
549 static void key_sa_chgstate __P((struct secasvar *, u_int8_t));
550 static struct mbuf *key_alloc_mbuf __P((int));
553 sa_initref(struct secasvar *sav)
556 refcount_init(&sav->refcnt, 1);
559 sa_addref(struct secasvar *sav)
562 refcount_acquire(&sav->refcnt);
563 IPSEC_ASSERT(sav->refcnt != 0, ("SA refcnt overflow"));
566 sa_delref(struct secasvar *sav)
569 IPSEC_ASSERT(sav->refcnt > 0, ("SA refcnt underflow"));
570 return (refcount_release(&sav->refcnt));
573 #define SP_ADDREF(p) do { \
575 IPSEC_ASSERT((p)->refcnt != 0, ("SP refcnt overflow")); \
577 #define SP_DELREF(p) do { \
578 IPSEC_ASSERT((p)->refcnt > 0, ("SP refcnt underflow")); \
584 * Update the refcnt while holding the SPTREE lock.
587 key_addref(struct secpolicy *sp)
595 * Return 0 when there are known to be no SP's for the specified
596 * direction. Otherwise return 1. This is used by IPsec code
597 * to optimize performance.
600 key_havesp(u_int dir)
603 return (dir == IPSEC_DIR_INBOUND || dir == IPSEC_DIR_OUTBOUND ?
604 LIST_FIRST(&V_sptree[dir]) != NULL : 1);
607 /* %%% IPsec policy management */
609 * allocating a SP for OUTBOUND or INBOUND packet.
610 * Must call key_freesp() later.
611 * OUT: NULL: not found
612 * others: found and return the pointer.
615 key_allocsp(struct secpolicyindex *spidx, u_int dir, const char* where, int tag)
617 struct secpolicy *sp;
619 IPSEC_ASSERT(spidx != NULL, ("null spidx"));
620 IPSEC_ASSERT(dir == IPSEC_DIR_INBOUND || dir == IPSEC_DIR_OUTBOUND,
621 ("invalid direction %u", dir));
623 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
624 printf("DP %s from %s:%u\n", __func__, where, tag));
627 KEYDEBUG(KEYDEBUG_IPSEC_DATA,
628 printf("*** objects\n");
629 kdebug_secpolicyindex(spidx));
632 LIST_FOREACH(sp, &V_sptree[dir], chain) {
633 KEYDEBUG(KEYDEBUG_IPSEC_DATA,
634 printf("*** in SPD\n");
635 kdebug_secpolicyindex(&sp->spidx));
637 if (sp->state == IPSEC_SPSTATE_DEAD)
639 if (key_cmpspidx_withmask(&sp->spidx, spidx))
646 KEY_CHKSPDIR(sp->spidx.dir, dir, __func__);
648 /* found a SPD entry */
649 sp->lastused = time_second;
654 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
655 printf("DP %s return SP:%p (ID=%u) refcnt %u\n", __func__,
656 sp, sp ? sp->id : 0, sp ? sp->refcnt : 0));
661 * allocating a SP for OUTBOUND or INBOUND packet.
662 * Must call key_freesp() later.
663 * OUT: NULL: not found
664 * others: found and return the pointer.
667 key_allocsp2(u_int32_t spi,
668 union sockaddr_union *dst,
671 const char* where, int tag)
673 struct secpolicy *sp;
675 IPSEC_ASSERT(dst != NULL, ("null dst"));
676 IPSEC_ASSERT(dir == IPSEC_DIR_INBOUND || dir == IPSEC_DIR_OUTBOUND,
677 ("invalid direction %u", dir));
679 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
680 printf("DP %s from %s:%u\n", __func__, where, tag));
683 KEYDEBUG(KEYDEBUG_IPSEC_DATA,
684 printf("*** objects\n");
685 printf("spi %u proto %u dir %u\n", spi, proto, dir);
686 kdebug_sockaddr(&dst->sa));
689 LIST_FOREACH(sp, &V_sptree[dir], chain) {
690 KEYDEBUG(KEYDEBUG_IPSEC_DATA,
691 printf("*** in SPD\n");
692 kdebug_secpolicyindex(&sp->spidx));
694 if (sp->state == IPSEC_SPSTATE_DEAD)
696 /* compare simple values, then dst address */
697 if (sp->spidx.ul_proto != proto)
699 /* NB: spi's must exist and match */
700 if (!sp->req || !sp->req->sav || sp->req->sav->spi != spi)
702 if (key_sockaddrcmp(&sp->spidx.dst.sa, &dst->sa, 1) == 0)
709 KEY_CHKSPDIR(sp->spidx.dir, dir, __func__);
711 /* found a SPD entry */
712 sp->lastused = time_second;
717 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
718 printf("DP %s return SP:%p (ID=%u) refcnt %u\n", __func__,
719 sp, sp ? sp->id : 0, sp ? sp->refcnt : 0));
725 * return a policy that matches this particular inbound packet.
729 key_gettunnel(const struct sockaddr *osrc,
730 const struct sockaddr *odst,
731 const struct sockaddr *isrc,
732 const struct sockaddr *idst,
733 const char* where, int tag)
735 struct secpolicy *sp;
736 const int dir = IPSEC_DIR_INBOUND;
737 struct ipsecrequest *r1, *r2, *p;
738 struct secpolicyindex spidx;
740 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
741 printf("DP %s from %s:%u\n", __func__, where, tag));
743 if (isrc->sa_family != idst->sa_family) {
744 ipseclog((LOG_ERR, "%s: protocol family mismatched %d != %d\n.",
745 __func__, isrc->sa_family, idst->sa_family));
751 LIST_FOREACH(sp, &V_sptree[dir], chain) {
752 if (sp->state == IPSEC_SPSTATE_DEAD)
756 for (p = sp->req; p; p = p->next) {
757 if (p->saidx.mode != IPSEC_MODE_TUNNEL)
764 /* here we look at address matches only */
766 if (isrc->sa_len > sizeof(spidx.src) ||
767 idst->sa_len > sizeof(spidx.dst))
769 bcopy(isrc, &spidx.src, isrc->sa_len);
770 bcopy(idst, &spidx.dst, idst->sa_len);
771 if (!key_cmpspidx_withmask(&sp->spidx, &spidx))
774 if (key_sockaddrcmp(&r1->saidx.src.sa, isrc, 0) ||
775 key_sockaddrcmp(&r1->saidx.dst.sa, idst, 0))
779 if (key_sockaddrcmp(&r2->saidx.src.sa, osrc, 0) ||
780 key_sockaddrcmp(&r2->saidx.dst.sa, odst, 0))
789 sp->lastused = time_second;
794 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
795 printf("DP %s return SP:%p (ID=%u) refcnt %u\n", __func__,
796 sp, sp ? sp->id : 0, sp ? sp->refcnt : 0));
802 * allocating an SA entry for an *OUTBOUND* packet.
803 * checking each request entries in SP, and acquire an SA if need.
804 * OUT: 0: there are valid requests.
805 * ENOENT: policy may be valid, but SA with REQUIRE is on acquiring.
808 key_checkrequest(struct ipsecrequest *isr, const struct secasindex *saidx)
812 struct secasvar *sav;
814 IPSEC_ASSERT(isr != NULL, ("null isr"));
815 IPSEC_ASSERT(saidx != NULL, ("null saidx"));
816 IPSEC_ASSERT(saidx->mode == IPSEC_MODE_TRANSPORT ||
817 saidx->mode == IPSEC_MODE_TUNNEL,
818 ("unexpected policy %u", saidx->mode));
821 * XXX guard against protocol callbacks from the crypto
822 * thread as they reference ipsecrequest.sav which we
823 * temporarily null out below. Need to rethink how we
824 * handle bundled SA's in the callback thread.
826 IPSECREQUEST_LOCK_ASSERT(isr);
828 /* get current level */
829 level = ipsec_get_reqlevel(isr);
832 * We check new SA in the IPsec request because a different
833 * SA may be involved each time this request is checked, either
834 * because new SAs are being configured, or this request is
835 * associated with an unconnected datagram socket, or this request
836 * is associated with a system default policy.
838 * key_allocsa_policy should allocate the oldest SA available.
839 * See key_do_allocsa_policy(), and draft-jenkins-ipsec-rekeying-03.txt.
841 sav = key_allocsa_policy(saidx);
842 if (sav != isr->sav) {
843 /* SA need to be updated. */
844 if (!IPSECREQUEST_UPGRADE(isr)) {
845 /* Kick everyone off. */
846 IPSECREQUEST_UNLOCK(isr);
847 IPSECREQUEST_WLOCK(isr);
849 if (isr->sav != NULL)
850 KEY_FREESAV(&isr->sav);
852 IPSECREQUEST_DOWNGRADE(isr);
853 } else if (sav != NULL)
856 /* When there is SA. */
857 if (isr->sav != NULL) {
858 if (isr->sav->state != SADB_SASTATE_MATURE &&
859 isr->sav->state != SADB_SASTATE_DYING)
865 error = key_acquire(saidx, isr->sp);
867 /* XXX What should I do ? */
868 ipseclog((LOG_DEBUG, "%s: error %d returned from key_acquire\n",
873 if (level != IPSEC_LEVEL_REQUIRE) {
874 /* XXX sigh, the interface to this routine is botched */
875 IPSEC_ASSERT(isr->sav == NULL, ("unexpected SA"));
883 * allocating a SA for policy entry from SAD.
884 * NOTE: searching SAD of aliving state.
885 * OUT: NULL: not found.
886 * others: found and return the pointer.
888 static struct secasvar *
889 key_allocsa_policy(const struct secasindex *saidx)
891 #define N(a) _ARRAYLEN(a)
892 struct secashead *sah;
893 struct secasvar *sav;
894 u_int stateidx, arraysize;
895 const u_int *state_valid;
897 state_valid = NULL; /* silence gcc */
898 arraysize = 0; /* silence gcc */
901 LIST_FOREACH(sah, &V_sahtree, chain) {
902 if (sah->state == SADB_SASTATE_DEAD)
904 if (key_cmpsaidx(&sah->saidx, saidx, CMP_MODE_REQID)) {
905 if (V_key_preferred_oldsa) {
906 state_valid = saorder_state_valid_prefer_old;
907 arraysize = N(saorder_state_valid_prefer_old);
909 state_valid = saorder_state_valid_prefer_new;
910 arraysize = N(saorder_state_valid_prefer_new);
919 /* search valid state */
920 for (stateidx = 0; stateidx < arraysize; stateidx++) {
921 sav = key_do_allocsa_policy(sah, state_valid[stateidx]);
931 * searching SAD with direction, protocol, mode and state.
932 * called by key_allocsa_policy().
935 * others : found, pointer to a SA.
937 static struct secasvar *
938 key_do_allocsa_policy(struct secashead *sah, u_int state)
940 struct secasvar *sav, *nextsav, *candidate, *d;
946 for (sav = LIST_FIRST(&sah->savtree[state]);
950 nextsav = LIST_NEXT(sav, chain);
953 KEY_CHKSASTATE(sav->state, state, __func__);
956 if (candidate == NULL) {
961 /* Which SA is the better ? */
963 IPSEC_ASSERT(candidate->lft_c != NULL,
964 ("null candidate lifetime"));
965 IPSEC_ASSERT(sav->lft_c != NULL, ("null sav lifetime"));
967 /* What the best method is to compare ? */
968 if (V_key_preferred_oldsa) {
969 if (candidate->lft_c->addtime >
970 sav->lft_c->addtime) {
977 /* preferred new sa rather than old sa */
978 if (candidate->lft_c->addtime <
979 sav->lft_c->addtime) {
986 * prepared to delete the SA when there is more
987 * suitable candidate and the lifetime of the SA is not
990 if (d->lft_h->addtime != 0) {
991 struct mbuf *m, *result;
994 key_sa_chgstate(d, SADB_SASTATE_DEAD);
996 IPSEC_ASSERT(d->refcnt > 0, ("bogus ref count"));
998 satype = key_proto2satype(d->sah->saidx.proto);
1002 m = key_setsadbmsg(SADB_DELETE, 0,
1003 satype, 0, 0, d->refcnt - 1);
1008 /* set sadb_address for saidx's. */
1009 m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
1010 &d->sah->saidx.src.sa,
1011 d->sah->saidx.src.sa.sa_len << 3,
1017 /* set sadb_address for saidx's. */
1018 m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
1019 &d->sah->saidx.dst.sa,
1020 d->sah->saidx.dst.sa.sa_len << 3,
1026 /* create SA extension */
1027 m = key_setsadbsa(d);
1032 if (result->m_len < sizeof(struct sadb_msg)) {
1033 result = m_pullup(result,
1034 sizeof(struct sadb_msg));
1039 result->m_pkthdr.len = 0;
1040 for (m = result; m; m = m->m_next)
1041 result->m_pkthdr.len += m->m_len;
1042 mtod(result, struct sadb_msg *)->sadb_msg_len =
1043 PFKEY_UNIT64(result->m_pkthdr.len);
1045 if (key_sendup_mbuf(NULL, result,
1046 KEY_SENDUP_REGISTERED))
1053 sa_addref(candidate);
1054 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1055 printf("DP %s cause refcnt++:%d SA:%p\n",
1056 __func__, candidate->refcnt, candidate));
1064 * allocating a usable SA entry for a *INBOUND* packet.
1065 * Must call key_freesav() later.
1066 * OUT: positive: pointer to a usable sav (i.e. MATURE or DYING state).
1067 * NULL: not found, or error occured.
1069 * In the comparison, no source address is used--for RFC2401 conformance.
1070 * To quote, from section 4.1:
1071 * A security association is uniquely identified by a triple consisting
1072 * of a Security Parameter Index (SPI), an IP Destination Address, and a
1073 * security protocol (AH or ESP) identifier.
1074 * Note that, however, we do need to keep source address in IPsec SA.
1075 * IKE specification and PF_KEY specification do assume that we
1076 * keep source address in IPsec SA. We see a tricky situation here.
1080 union sockaddr_union *dst,
1083 const char* where, int tag)
1085 struct secashead *sah;
1086 struct secasvar *sav;
1087 u_int stateidx, arraysize, state;
1088 const u_int *saorder_state_valid;
1091 IPSEC_ASSERT(dst != NULL, ("null dst address"));
1093 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1094 printf("DP %s from %s:%u\n", __func__, where, tag));
1097 chkport = (dst->sa.sa_family == AF_INET &&
1098 dst->sa.sa_len == sizeof(struct sockaddr_in) &&
1099 dst->sin.sin_port != 0);
1106 * XXX: to be checked internal IP header somewhere. Also when
1107 * IPsec tunnel packet is received. But ESP tunnel mode is
1108 * encrypted so we can't check internal IP header.
1111 if (V_key_preferred_oldsa) {
1112 saorder_state_valid = saorder_state_valid_prefer_old;
1113 arraysize = _ARRAYLEN(saorder_state_valid_prefer_old);
1115 saorder_state_valid = saorder_state_valid_prefer_new;
1116 arraysize = _ARRAYLEN(saorder_state_valid_prefer_new);
1118 LIST_FOREACH(sah, &V_sahtree, chain) {
1119 /* search valid state */
1120 for (stateidx = 0; stateidx < arraysize; stateidx++) {
1121 state = saorder_state_valid[stateidx];
1122 LIST_FOREACH(sav, &sah->savtree[state], chain) {
1124 KEY_CHKSASTATE(sav->state, state, __func__);
1125 /* do not return entries w/ unusable state */
1126 if (sav->state != SADB_SASTATE_MATURE &&
1127 sav->state != SADB_SASTATE_DYING)
1129 if (proto != sav->sah->saidx.proto)
1131 if (spi != sav->spi)
1133 #if 0 /* don't check src */
1134 /* check src address */
1135 if (key_sockaddrcmp(&src->sa, &sav->sah->saidx.src.sa, chkport) != 0)
1138 /* check dst address */
1139 if (key_sockaddrcmp(&dst->sa, &sav->sah->saidx.dst.sa, chkport) != 0)
1150 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1151 printf("DP %s return SA:%p; refcnt %u\n", __func__,
1152 sav, sav ? sav->refcnt : 0));
1157 * Must be called after calling key_allocsp().
1158 * For both the packet without socket and key_freeso().
1161 _key_freesp(struct secpolicy **spp, const char* where, int tag)
1163 struct secpolicy *sp = *spp;
1165 IPSEC_ASSERT(sp != NULL, ("null sp"));
1170 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1171 printf("DP %s SP:%p (ID=%u) from %s:%u; refcnt now %u\n",
1172 __func__, sp, sp->id, where, tag, sp->refcnt));
1174 if (sp->refcnt == 0) {
1182 * Must be called after calling key_allocsp().
1183 * For the packet with socket.
1186 key_freeso(struct socket *so)
1188 IPSEC_ASSERT(so != NULL, ("null so"));
1190 switch (so->so_proto->pr_domain->dom_family) {
1191 #if defined(INET) || defined(INET6)
1199 struct inpcb *pcb = sotoinpcb(so);
1201 /* Does it have a PCB ? */
1204 key_freesp_so(&pcb->inp_sp->sp_in);
1205 key_freesp_so(&pcb->inp_sp->sp_out);
1208 #endif /* INET || INET6 */
1210 ipseclog((LOG_DEBUG, "%s: unknown address family=%d.\n",
1211 __func__, so->so_proto->pr_domain->dom_family));
1217 key_freesp_so(struct secpolicy **sp)
1219 IPSEC_ASSERT(sp != NULL && *sp != NULL, ("null sp"));
1221 if ((*sp)->policy == IPSEC_POLICY_ENTRUST ||
1222 (*sp)->policy == IPSEC_POLICY_BYPASS)
1225 IPSEC_ASSERT((*sp)->policy == IPSEC_POLICY_IPSEC,
1226 ("invalid policy %u", (*sp)->policy));
1231 key_addrefsa(struct secasvar *sav, const char* where, int tag)
1234 IPSEC_ASSERT(sav != NULL, ("null sav"));
1235 IPSEC_ASSERT(sav->refcnt > 0, ("refcount must exist"));
1241 * Must be called after calling key_allocsa().
1242 * This function is called by key_freesp() to free some SA allocated
1246 key_freesav(struct secasvar **psav, const char* where, int tag)
1248 struct secasvar *sav = *psav;
1250 IPSEC_ASSERT(sav != NULL, ("null sav"));
1252 if (sa_delref(sav)) {
1253 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1254 printf("DP %s SA:%p (SPI %u) from %s:%u; refcnt now %u\n",
1255 __func__, sav, ntohl(sav->spi), where, tag, sav->refcnt));
1259 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1260 printf("DP %s SA:%p (SPI %u) from %s:%u; refcnt now %u\n",
1261 __func__, sav, ntohl(sav->spi), where, tag, sav->refcnt));
1265 /* %%% SPD management */
1267 * free security policy entry.
1270 key_delsp(struct secpolicy *sp)
1272 struct ipsecrequest *isr, *nextisr;
1274 IPSEC_ASSERT(sp != NULL, ("null sp"));
1275 SPTREE_LOCK_ASSERT();
1277 sp->state = IPSEC_SPSTATE_DEAD;
1279 IPSEC_ASSERT(sp->refcnt == 0,
1280 ("SP with references deleted (refcnt %u)", sp->refcnt));
1282 /* remove from SP index */
1283 if (__LIST_CHAINED(sp))
1284 LIST_REMOVE(sp, chain);
1286 for (isr = sp->req; isr != NULL; isr = nextisr) {
1287 if (isr->sav != NULL) {
1288 KEY_FREESAV(&isr->sav);
1292 nextisr = isr->next;
1300 * OUT: NULL : not found
1301 * others : found, pointer to a SP.
1303 static struct secpolicy *
1304 key_getsp(struct secpolicyindex *spidx)
1306 struct secpolicy *sp;
1308 IPSEC_ASSERT(spidx != NULL, ("null spidx"));
1311 LIST_FOREACH(sp, &V_sptree[spidx->dir], chain) {
1312 if (sp->state == IPSEC_SPSTATE_DEAD)
1314 if (key_cmpspidx_exactly(spidx, &sp->spidx)) {
1326 * OUT: NULL : not found
1327 * others : found, pointer to a SP.
1329 static struct secpolicy *
1330 key_getspbyid(u_int32_t id)
1332 struct secpolicy *sp;
1335 LIST_FOREACH(sp, &V_sptree[IPSEC_DIR_INBOUND], chain) {
1336 if (sp->state == IPSEC_SPSTATE_DEAD)
1344 LIST_FOREACH(sp, &V_sptree[IPSEC_DIR_OUTBOUND], chain) {
1345 if (sp->state == IPSEC_SPSTATE_DEAD)
1359 key_newsp(const char* where, int tag)
1361 struct secpolicy *newsp = NULL;
1363 newsp = (struct secpolicy *)
1364 malloc(sizeof(struct secpolicy), M_IPSEC_SP, M_NOWAIT|M_ZERO);
1366 SECPOLICY_LOCK_INIT(newsp);
1371 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1372 printf("DP %s from %s:%u return SP:%p\n", __func__,
1373 where, tag, newsp));
1378 _key_delsp(struct secpolicy *sp)
1380 SECPOLICY_LOCK_DESTROY(sp);
1381 free(sp, M_IPSEC_SP);
1385 * create secpolicy structure from sadb_x_policy structure.
1386 * NOTE: `state', `secpolicyindex' in secpolicy structure are not set,
1387 * so must be set properly later.
1390 key_msg2sp(xpl0, len, error)
1391 struct sadb_x_policy *xpl0;
1395 struct secpolicy *newsp;
1397 IPSEC_ASSERT(xpl0 != NULL, ("null xpl0"));
1398 IPSEC_ASSERT(len >= sizeof(*xpl0), ("policy too short: %zu", len));
1400 if (len != PFKEY_EXTLEN(xpl0)) {
1401 ipseclog((LOG_DEBUG, "%s: Invalid msg length.\n", __func__));
1406 if ((newsp = KEY_NEWSP()) == NULL) {
1411 newsp->spidx.dir = xpl0->sadb_x_policy_dir;
1412 newsp->policy = xpl0->sadb_x_policy_type;
1415 switch (xpl0->sadb_x_policy_type) {
1416 case IPSEC_POLICY_DISCARD:
1417 case IPSEC_POLICY_NONE:
1418 case IPSEC_POLICY_ENTRUST:
1419 case IPSEC_POLICY_BYPASS:
1423 case IPSEC_POLICY_IPSEC:
1426 struct sadb_x_ipsecrequest *xisr;
1427 struct ipsecrequest **p_isr = &newsp->req;
1429 /* validity check */
1430 if (PFKEY_EXTLEN(xpl0) < sizeof(*xpl0)) {
1431 ipseclog((LOG_DEBUG, "%s: Invalid msg length.\n",
1438 tlen = PFKEY_EXTLEN(xpl0) - sizeof(*xpl0);
1439 xisr = (struct sadb_x_ipsecrequest *)(xpl0 + 1);
1443 if (xisr->sadb_x_ipsecrequest_len < sizeof(*xisr)) {
1444 ipseclog((LOG_DEBUG, "%s: invalid ipsecrequest "
1445 "length.\n", __func__));
1451 /* allocate request buffer */
1452 /* NB: data structure is zero'd */
1453 *p_isr = ipsec_newisr();
1454 if ((*p_isr) == NULL) {
1455 ipseclog((LOG_DEBUG,
1456 "%s: No more memory.\n", __func__));
1463 switch (xisr->sadb_x_ipsecrequest_proto) {
1466 case IPPROTO_IPCOMP:
1469 ipseclog((LOG_DEBUG,
1470 "%s: invalid proto type=%u\n", __func__,
1471 xisr->sadb_x_ipsecrequest_proto));
1473 *error = EPROTONOSUPPORT;
1476 (*p_isr)->saidx.proto = xisr->sadb_x_ipsecrequest_proto;
1478 switch (xisr->sadb_x_ipsecrequest_mode) {
1479 case IPSEC_MODE_TRANSPORT:
1480 case IPSEC_MODE_TUNNEL:
1482 case IPSEC_MODE_ANY:
1484 ipseclog((LOG_DEBUG,
1485 "%s: invalid mode=%u\n", __func__,
1486 xisr->sadb_x_ipsecrequest_mode));
1491 (*p_isr)->saidx.mode = xisr->sadb_x_ipsecrequest_mode;
1493 switch (xisr->sadb_x_ipsecrequest_level) {
1494 case IPSEC_LEVEL_DEFAULT:
1495 case IPSEC_LEVEL_USE:
1496 case IPSEC_LEVEL_REQUIRE:
1498 case IPSEC_LEVEL_UNIQUE:
1499 /* validity check */
1501 * If range violation of reqid, kernel will
1502 * update it, don't refuse it.
1504 if (xisr->sadb_x_ipsecrequest_reqid
1505 > IPSEC_MANUAL_REQID_MAX) {
1506 ipseclog((LOG_DEBUG,
1507 "%s: reqid=%d range "
1508 "violation, updated by kernel.\n",
1510 xisr->sadb_x_ipsecrequest_reqid));
1511 xisr->sadb_x_ipsecrequest_reqid = 0;
1514 /* allocate new reqid id if reqid is zero. */
1515 if (xisr->sadb_x_ipsecrequest_reqid == 0) {
1517 if ((reqid = key_newreqid()) == 0) {
1522 (*p_isr)->saidx.reqid = reqid;
1523 xisr->sadb_x_ipsecrequest_reqid = reqid;
1525 /* set it for manual keying. */
1526 (*p_isr)->saidx.reqid =
1527 xisr->sadb_x_ipsecrequest_reqid;
1532 ipseclog((LOG_DEBUG, "%s: invalid level=%u\n",
1534 xisr->sadb_x_ipsecrequest_level));
1539 (*p_isr)->level = xisr->sadb_x_ipsecrequest_level;
1541 /* set IP addresses if there */
1542 if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) {
1543 struct sockaddr *paddr;
1545 paddr = (struct sockaddr *)(xisr + 1);
1547 /* validity check */
1549 > sizeof((*p_isr)->saidx.src)) {
1550 ipseclog((LOG_DEBUG, "%s: invalid "
1551 "request address length.\n",
1557 bcopy(paddr, &(*p_isr)->saidx.src,
1560 paddr = (struct sockaddr *)((caddr_t)paddr
1563 /* validity check */
1565 > sizeof((*p_isr)->saidx.dst)) {
1566 ipseclog((LOG_DEBUG, "%s: invalid "
1567 "request address length.\n",
1573 bcopy(paddr, &(*p_isr)->saidx.dst,
1577 (*p_isr)->sp = newsp;
1579 /* initialization for the next. */
1580 p_isr = &(*p_isr)->next;
1581 tlen -= xisr->sadb_x_ipsecrequest_len;
1583 /* validity check */
1585 ipseclog((LOG_DEBUG, "%s: becoming tlen < 0.\n",
1592 xisr = (struct sadb_x_ipsecrequest *)((caddr_t)xisr
1593 + xisr->sadb_x_ipsecrequest_len);
1598 ipseclog((LOG_DEBUG, "%s: invalid policy type.\n", __func__));
1611 static u_int32_t auto_reqid = IPSEC_MANUAL_REQID_MAX + 1;
1613 auto_reqid = (auto_reqid == ~0
1614 ? IPSEC_MANUAL_REQID_MAX + 1 : auto_reqid + 1);
1616 /* XXX should be unique check */
1622 * copy secpolicy struct to sadb_x_policy structure indicated.
1626 struct secpolicy *sp;
1628 struct sadb_x_policy *xpl;
1633 IPSEC_ASSERT(sp != NULL, ("null policy"));
1635 tlen = key_getspreqmsglen(sp);
1637 m = key_alloc_mbuf(tlen);
1638 if (!m || m->m_next) { /*XXX*/
1646 xpl = mtod(m, struct sadb_x_policy *);
1649 xpl->sadb_x_policy_len = PFKEY_UNIT64(tlen);
1650 xpl->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
1651 xpl->sadb_x_policy_type = sp->policy;
1652 xpl->sadb_x_policy_dir = sp->spidx.dir;
1653 xpl->sadb_x_policy_id = sp->id;
1654 p = (caddr_t)xpl + sizeof(*xpl);
1656 /* if is the policy for ipsec ? */
1657 if (sp->policy == IPSEC_POLICY_IPSEC) {
1658 struct sadb_x_ipsecrequest *xisr;
1659 struct ipsecrequest *isr;
1661 for (isr = sp->req; isr != NULL; isr = isr->next) {
1663 xisr = (struct sadb_x_ipsecrequest *)p;
1665 xisr->sadb_x_ipsecrequest_proto = isr->saidx.proto;
1666 xisr->sadb_x_ipsecrequest_mode = isr->saidx.mode;
1667 xisr->sadb_x_ipsecrequest_level = isr->level;
1668 xisr->sadb_x_ipsecrequest_reqid = isr->saidx.reqid;
1671 bcopy(&isr->saidx.src, p, isr->saidx.src.sa.sa_len);
1672 p += isr->saidx.src.sa.sa_len;
1673 bcopy(&isr->saidx.dst, p, isr->saidx.dst.sa.sa_len);
1674 p += isr->saidx.src.sa.sa_len;
1676 xisr->sadb_x_ipsecrequest_len =
1677 PFKEY_ALIGN8(sizeof(*xisr)
1678 + isr->saidx.src.sa.sa_len
1679 + isr->saidx.dst.sa.sa_len);
1686 /* m will not be freed nor modified */
1687 static struct mbuf *
1689 key_gather_mbuf(struct mbuf *m, const struct sadb_msghdr *mhp,
1690 int ndeep, int nitem, ...)
1692 key_gather_mbuf(m, mhp, ndeep, nitem, va_alist)
1694 const struct sadb_msghdr *mhp;
1703 struct mbuf *result = NULL, *n;
1706 IPSEC_ASSERT(m != NULL, ("null mbuf"));
1707 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
1709 va_start(ap, nitem);
1710 for (i = 0; i < nitem; i++) {
1711 idx = va_arg(ap, int);
1712 if (idx < 0 || idx > SADB_EXT_MAX)
1714 /* don't attempt to pull empty extension */
1715 if (idx == SADB_EXT_RESERVED && mhp->msg == NULL)
1717 if (idx != SADB_EXT_RESERVED &&
1718 (mhp->ext[idx] == NULL || mhp->extlen[idx] == 0))
1721 if (idx == SADB_EXT_RESERVED) {
1722 len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
1724 IPSEC_ASSERT(len <= MHLEN, ("header too big %u", len));
1726 MGETHDR(n, M_DONTWAIT, MT_DATA);
1731 m_copydata(m, 0, sizeof(struct sadb_msg),
1733 } else if (i < ndeep) {
1734 len = mhp->extlen[idx];
1735 n = key_alloc_mbuf(len);
1736 if (!n || n->m_next) { /*XXX*/
1741 m_copydata(m, mhp->extoff[idx], mhp->extlen[idx],
1744 n = m_copym(m, mhp->extoff[idx], mhp->extlen[idx],
1757 if ((result->m_flags & M_PKTHDR) != 0) {
1758 result->m_pkthdr.len = 0;
1759 for (n = result; n; n = n->m_next)
1760 result->m_pkthdr.len += n->m_len;
1771 * SADB_X_SPDADD, SADB_X_SPDSETIDX or SADB_X_SPDUPDATE processing
1772 * add an entry to SP database, when received
1773 * <base, address(SD), (lifetime(H),) policy>
1775 * Adding to SP database,
1777 * <base, address(SD), (lifetime(H),) policy>
1778 * to the socket which was send.
1780 * SPDADD set a unique policy entry.
1781 * SPDSETIDX like SPDADD without a part of policy requests.
1782 * SPDUPDATE replace a unique policy entry.
1784 * m will always be freed.
1787 key_spdadd(so, m, mhp)
1790 const struct sadb_msghdr *mhp;
1792 struct sadb_address *src0, *dst0;
1793 struct sadb_x_policy *xpl0, *xpl;
1794 struct sadb_lifetime *lft = NULL;
1795 struct secpolicyindex spidx;
1796 struct secpolicy *newsp;
1799 IPSEC_ASSERT(so != NULL, ("null socket"));
1800 IPSEC_ASSERT(m != NULL, ("null mbuf"));
1801 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
1802 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
1804 if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
1805 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
1806 mhp->ext[SADB_X_EXT_POLICY] == NULL) {
1807 ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
1808 return key_senderror(so, m, EINVAL);
1810 if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
1811 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
1812 mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
1813 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
1815 return key_senderror(so, m, EINVAL);
1817 if (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL) {
1818 if (mhp->extlen[SADB_EXT_LIFETIME_HARD]
1819 < sizeof(struct sadb_lifetime)) {
1820 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
1822 return key_senderror(so, m, EINVAL);
1824 lft = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_HARD];
1827 src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
1828 dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
1829 xpl0 = (struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY];
1832 * Note: do not parse SADB_X_EXT_NAT_T_* here:
1833 * we are processing traffic endpoints.
1837 /* XXX boundary check against sa_len */
1838 KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
1841 src0->sadb_address_prefixlen,
1842 dst0->sadb_address_prefixlen,
1843 src0->sadb_address_proto,
1846 /* checking the direciton. */
1847 switch (xpl0->sadb_x_policy_dir) {
1848 case IPSEC_DIR_INBOUND:
1849 case IPSEC_DIR_OUTBOUND:
1852 ipseclog((LOG_DEBUG, "%s: Invalid SP direction.\n", __func__));
1853 mhp->msg->sadb_msg_errno = EINVAL;
1858 /* key_spdadd() accepts DISCARD, NONE and IPSEC. */
1859 if (xpl0->sadb_x_policy_type == IPSEC_POLICY_ENTRUST
1860 || xpl0->sadb_x_policy_type == IPSEC_POLICY_BYPASS) {
1861 ipseclog((LOG_DEBUG, "%s: Invalid policy type.\n", __func__));
1862 return key_senderror(so, m, EINVAL);
1865 /* policy requests are mandatory when action is ipsec. */
1866 if (mhp->msg->sadb_msg_type != SADB_X_SPDSETIDX
1867 && xpl0->sadb_x_policy_type == IPSEC_POLICY_IPSEC
1868 && mhp->extlen[SADB_X_EXT_POLICY] <= sizeof(*xpl0)) {
1869 ipseclog((LOG_DEBUG, "%s: some policy requests part required\n",
1871 return key_senderror(so, m, EINVAL);
1875 * checking there is SP already or not.
1876 * SPDUPDATE doesn't depend on whether there is a SP or not.
1877 * If the type is either SPDADD or SPDSETIDX AND a SP is found,
1880 newsp = key_getsp(&spidx);
1881 if (mhp->msg->sadb_msg_type == SADB_X_SPDUPDATE) {
1884 newsp->state = IPSEC_SPSTATE_DEAD;
1889 if (newsp != NULL) {
1891 ipseclog((LOG_DEBUG, "%s: a SP entry exists already.\n",
1893 return key_senderror(so, m, EEXIST);
1897 /* allocation new SP entry */
1898 if ((newsp = key_msg2sp(xpl0, PFKEY_EXTLEN(xpl0), &error)) == NULL) {
1899 return key_senderror(so, m, error);
1902 if ((newsp->id = key_getnewspid()) == 0) {
1904 return key_senderror(so, m, ENOBUFS);
1907 /* XXX boundary check against sa_len */
1908 KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
1911 src0->sadb_address_prefixlen,
1912 dst0->sadb_address_prefixlen,
1913 src0->sadb_address_proto,
1916 /* sanity check on addr pair */
1917 if (((struct sockaddr *)(src0 + 1))->sa_family !=
1918 ((struct sockaddr *)(dst0+ 1))->sa_family) {
1920 return key_senderror(so, m, EINVAL);
1922 if (((struct sockaddr *)(src0 + 1))->sa_len !=
1923 ((struct sockaddr *)(dst0+ 1))->sa_len) {
1925 return key_senderror(so, m, EINVAL);
1928 if (newsp->req && newsp->req->saidx.src.sa.sa_family && newsp->req->saidx.dst.sa.sa_family) {
1929 if (newsp->req->saidx.src.sa.sa_family != newsp->req->saidx.dst.sa.sa_family) {
1931 return key_senderror(so, m, EINVAL);
1936 newsp->created = time_second;
1937 newsp->lastused = newsp->created;
1938 newsp->lifetime = lft ? lft->sadb_lifetime_addtime : 0;
1939 newsp->validtime = lft ? lft->sadb_lifetime_usetime : 0;
1941 newsp->refcnt = 1; /* do not reclaim until I say I do */
1942 newsp->state = IPSEC_SPSTATE_ALIVE;
1943 LIST_INSERT_TAIL(&V_sptree[newsp->spidx.dir], newsp, secpolicy, chain);
1945 /* delete the entry in spacqtree */
1946 if (mhp->msg->sadb_msg_type == SADB_X_SPDUPDATE) {
1947 struct secspacq *spacq = key_getspacq(&spidx);
1948 if (spacq != NULL) {
1949 /* reset counter in order to deletion by timehandler. */
1950 spacq->created = time_second;
1957 struct mbuf *n, *mpolicy;
1958 struct sadb_msg *newmsg;
1962 * Note: do not send SADB_X_EXT_NAT_T_* here:
1963 * we are sending traffic endpoints.
1966 /* create new sadb_msg to reply. */
1968 n = key_gather_mbuf(m, mhp, 2, 5, SADB_EXT_RESERVED,
1969 SADB_X_EXT_POLICY, SADB_EXT_LIFETIME_HARD,
1970 SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
1972 n = key_gather_mbuf(m, mhp, 2, 4, SADB_EXT_RESERVED,
1974 SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
1977 return key_senderror(so, m, ENOBUFS);
1979 if (n->m_len < sizeof(*newmsg)) {
1980 n = m_pullup(n, sizeof(*newmsg));
1982 return key_senderror(so, m, ENOBUFS);
1984 newmsg = mtod(n, struct sadb_msg *);
1985 newmsg->sadb_msg_errno = 0;
1986 newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
1989 mpolicy = m_pulldown(n, PFKEY_ALIGN8(sizeof(struct sadb_msg)),
1990 sizeof(*xpl), &off);
1991 if (mpolicy == NULL) {
1992 /* n is already freed */
1993 return key_senderror(so, m, ENOBUFS);
1995 xpl = (struct sadb_x_policy *)(mtod(mpolicy, caddr_t) + off);
1996 if (xpl->sadb_x_policy_exttype != SADB_X_EXT_POLICY) {
1998 return key_senderror(so, m, EINVAL);
2000 xpl->sadb_x_policy_id = newsp->id;
2003 return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
2008 * get new policy id.
2016 u_int32_t newid = 0;
2017 int count = V_key_spi_trycnt; /* XXX */
2018 struct secpolicy *sp;
2020 /* when requesting to allocate spi ranged */
2022 newid = (V_policy_id = (V_policy_id == ~0 ? 1 : V_policy_id + 1));
2024 if ((sp = key_getspbyid(newid)) == NULL)
2030 if (count == 0 || newid == 0) {
2031 ipseclog((LOG_DEBUG, "%s: to allocate policy id is failed.\n",
2040 * SADB_SPDDELETE processing
2042 * <base, address(SD), policy(*)>
2043 * from the user(?), and set SADB_SASTATE_DEAD,
2045 * <base, address(SD), policy(*)>
2047 * policy(*) including direction of policy.
2049 * m will always be freed.
2052 key_spddelete(so, m, mhp)
2055 const struct sadb_msghdr *mhp;
2057 struct sadb_address *src0, *dst0;
2058 struct sadb_x_policy *xpl0;
2059 struct secpolicyindex spidx;
2060 struct secpolicy *sp;
2062 IPSEC_ASSERT(so != NULL, ("null so"));
2063 IPSEC_ASSERT(m != NULL, ("null mbuf"));
2064 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
2065 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
2067 if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
2068 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
2069 mhp->ext[SADB_X_EXT_POLICY] == NULL) {
2070 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
2072 return key_senderror(so, m, EINVAL);
2074 if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
2075 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
2076 mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
2077 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
2079 return key_senderror(so, m, EINVAL);
2082 src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
2083 dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
2084 xpl0 = (struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY];
2087 * Note: do not parse SADB_X_EXT_NAT_T_* here:
2088 * we are processing traffic endpoints.
2092 /* XXX boundary check against sa_len */
2093 KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
2096 src0->sadb_address_prefixlen,
2097 dst0->sadb_address_prefixlen,
2098 src0->sadb_address_proto,
2101 /* checking the direciton. */
2102 switch (xpl0->sadb_x_policy_dir) {
2103 case IPSEC_DIR_INBOUND:
2104 case IPSEC_DIR_OUTBOUND:
2107 ipseclog((LOG_DEBUG, "%s: Invalid SP direction.\n", __func__));
2108 return key_senderror(so, m, EINVAL);
2111 /* Is there SP in SPD ? */
2112 if ((sp = key_getsp(&spidx)) == NULL) {
2113 ipseclog((LOG_DEBUG, "%s: no SP found.\n", __func__));
2114 return key_senderror(so, m, EINVAL);
2117 /* save policy id to buffer to be returned. */
2118 xpl0->sadb_x_policy_id = sp->id;
2121 sp->state = IPSEC_SPSTATE_DEAD;
2127 struct sadb_msg *newmsg;
2130 * Note: do not send SADB_X_EXT_NAT_T_* here:
2131 * we are sending traffic endpoints.
2134 /* create new sadb_msg to reply. */
2135 n = key_gather_mbuf(m, mhp, 1, 4, SADB_EXT_RESERVED,
2136 SADB_X_EXT_POLICY, SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
2138 return key_senderror(so, m, ENOBUFS);
2140 newmsg = mtod(n, struct sadb_msg *);
2141 newmsg->sadb_msg_errno = 0;
2142 newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
2145 return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
2150 * SADB_SPDDELETE2 processing
2153 * from the user(?), and set SADB_SASTATE_DEAD,
2157 * policy(*) including direction of policy.
2159 * m will always be freed.
2162 key_spddelete2(so, m, mhp)
2165 const struct sadb_msghdr *mhp;
2168 struct secpolicy *sp;
2170 IPSEC_ASSERT(so != NULL, ("null socket"));
2171 IPSEC_ASSERT(m != NULL, ("null mbuf"));
2172 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
2173 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
2175 if (mhp->ext[SADB_X_EXT_POLICY] == NULL ||
2176 mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
2177 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n", __func__));
2178 return key_senderror(so, m, EINVAL);
2181 id = ((struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
2183 /* Is there SP in SPD ? */
2184 if ((sp = key_getspbyid(id)) == NULL) {
2185 ipseclog((LOG_DEBUG, "%s: no SP found id:%u.\n", __func__, id));
2186 return key_senderror(so, m, EINVAL);
2190 sp->state = IPSEC_SPSTATE_DEAD;
2195 struct mbuf *n, *nn;
2196 struct sadb_msg *newmsg;
2199 /* create new sadb_msg to reply. */
2200 len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
2202 MGETHDR(n, M_DONTWAIT, MT_DATA);
2203 if (n && len > MHLEN) {
2204 MCLGET(n, M_DONTWAIT);
2205 if ((n->m_flags & M_EXT) == 0) {
2211 return key_senderror(so, m, ENOBUFS);
2217 m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
2218 off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
2220 IPSEC_ASSERT(off == len, ("length inconsistency (off %u len %u)",
2223 n->m_next = m_copym(m, mhp->extoff[SADB_X_EXT_POLICY],
2224 mhp->extlen[SADB_X_EXT_POLICY], M_DONTWAIT);
2227 return key_senderror(so, m, ENOBUFS);
2230 n->m_pkthdr.len = 0;
2231 for (nn = n; nn; nn = nn->m_next)
2232 n->m_pkthdr.len += nn->m_len;
2234 newmsg = mtod(n, struct sadb_msg *);
2235 newmsg->sadb_msg_errno = 0;
2236 newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
2239 return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
2244 * SADB_X_GET processing
2249 * <base, address(SD), policy>
2251 * policy(*) including direction of policy.
2253 * m will always be freed.
2256 key_spdget(so, m, mhp)
2259 const struct sadb_msghdr *mhp;
2262 struct secpolicy *sp;
2265 IPSEC_ASSERT(so != NULL, ("null socket"));
2266 IPSEC_ASSERT(m != NULL, ("null mbuf"));
2267 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
2268 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
2270 if (mhp->ext[SADB_X_EXT_POLICY] == NULL ||
2271 mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
2272 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
2274 return key_senderror(so, m, EINVAL);
2277 id = ((struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
2279 /* Is there SP in SPD ? */
2280 if ((sp = key_getspbyid(id)) == NULL) {
2281 ipseclog((LOG_DEBUG, "%s: no SP found id:%u.\n", __func__, id));
2282 return key_senderror(so, m, ENOENT);
2285 n = key_setdumpsp(sp, SADB_X_SPDGET, 0, mhp->msg->sadb_msg_pid);
2288 return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
2290 return key_senderror(so, m, ENOBUFS);
2294 * SADB_X_SPDACQUIRE processing.
2295 * Acquire policy and SA(s) for a *OUTBOUND* packet.
2298 * to KMD, and expect to receive
2299 * <base> with SADB_X_SPDACQUIRE if error occured,
2302 * with SADB_X_SPDUPDATE from KMD by PF_KEY.
2303 * policy(*) is without policy requests.
2306 * others: error number
2310 struct secpolicy *sp;
2312 struct mbuf *result = NULL, *m;
2313 struct secspacq *newspacq;
2315 IPSEC_ASSERT(sp != NULL, ("null secpolicy"));
2316 IPSEC_ASSERT(sp->req == NULL, ("policy exists"));
2317 IPSEC_ASSERT(sp->policy == IPSEC_POLICY_IPSEC,
2318 ("policy not IPSEC %u", sp->policy));
2320 /* Get an entry to check whether sent message or not. */
2321 newspacq = key_getspacq(&sp->spidx);
2322 if (newspacq != NULL) {
2323 if (V_key_blockacq_count < newspacq->count) {
2324 /* reset counter and do send message. */
2325 newspacq->count = 0;
2327 /* increment counter and do nothing. */
2333 /* make new entry for blocking to send SADB_ACQUIRE. */
2334 newspacq = key_newspacq(&sp->spidx);
2335 if (newspacq == NULL)
2339 /* create new sadb_msg to reply. */
2340 m = key_setsadbmsg(SADB_X_SPDACQUIRE, 0, 0, 0, 0, 0);
2346 result->m_pkthdr.len = 0;
2347 for (m = result; m; m = m->m_next)
2348 result->m_pkthdr.len += m->m_len;
2350 mtod(result, struct sadb_msg *)->sadb_msg_len =
2351 PFKEY_UNIT64(result->m_pkthdr.len);
2353 return key_sendup_mbuf(NULL, m, KEY_SENDUP_REGISTERED);
2357 * SADB_SPDFLUSH processing
2360 * from the user, and free all entries in secpctree.
2364 * NOTE: what to do is only marking SADB_SASTATE_DEAD.
2366 * m will always be freed.
2369 key_spdflush(so, m, mhp)
2372 const struct sadb_msghdr *mhp;
2374 struct sadb_msg *newmsg;
2375 struct secpolicy *sp;
2378 IPSEC_ASSERT(so != NULL, ("null socket"));
2379 IPSEC_ASSERT(m != NULL, ("null mbuf"));
2380 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
2381 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
2383 if (m->m_len != PFKEY_ALIGN8(sizeof(struct sadb_msg)))
2384 return key_senderror(so, m, EINVAL);
2386 for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
2388 LIST_FOREACH(sp, &V_sptree[dir], chain)
2389 sp->state = IPSEC_SPSTATE_DEAD;
2393 if (sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
2394 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
2395 return key_senderror(so, m, ENOBUFS);
2401 m->m_pkthdr.len = m->m_len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
2402 newmsg = mtod(m, struct sadb_msg *);
2403 newmsg->sadb_msg_errno = 0;
2404 newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
2406 return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
2410 * SADB_SPDDUMP processing
2413 * from the user, and dump all SP leaves
2418 * m will always be freed.
2421 key_spddump(so, m, mhp)
2424 const struct sadb_msghdr *mhp;
2426 struct secpolicy *sp;
2431 IPSEC_ASSERT(so != NULL, ("null socket"));
2432 IPSEC_ASSERT(m != NULL, ("null mbuf"));
2433 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
2434 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
2436 /* search SPD entry and get buffer size. */
2439 for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
2440 LIST_FOREACH(sp, &V_sptree[dir], chain) {
2447 return key_senderror(so, m, ENOENT);
2450 for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
2451 LIST_FOREACH(sp, &V_sptree[dir], chain) {
2453 n = key_setdumpsp(sp, SADB_X_SPDDUMP, cnt,
2454 mhp->msg->sadb_msg_pid);
2457 key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
2466 static struct mbuf *
2467 key_setdumpsp(struct secpolicy *sp, u_int8_t type, u_int32_t seq, u_int32_t pid)
2469 struct mbuf *result = NULL, *m;
2470 struct seclifetime lt;
2472 m = key_setsadbmsg(type, 0, SADB_SATYPE_UNSPEC, seq, pid, sp->refcnt);
2478 * Note: do not send SADB_X_EXT_NAT_T_* here:
2479 * we are sending traffic endpoints.
2481 m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
2482 &sp->spidx.src.sa, sp->spidx.prefs,
2483 sp->spidx.ul_proto);
2488 m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
2489 &sp->spidx.dst.sa, sp->spidx.prefd,
2490 sp->spidx.ul_proto);
2501 lt.addtime=sp->created;
2502 lt.usetime= sp->lastused;
2503 m = key_setlifetime(<, SADB_EXT_LIFETIME_CURRENT);
2508 lt.addtime=sp->lifetime;
2509 lt.usetime= sp->validtime;
2510 m = key_setlifetime(<, SADB_EXT_LIFETIME_HARD);
2516 if ((result->m_flags & M_PKTHDR) == 0)
2519 if (result->m_len < sizeof(struct sadb_msg)) {
2520 result = m_pullup(result, sizeof(struct sadb_msg));
2525 result->m_pkthdr.len = 0;
2526 for (m = result; m; m = m->m_next)
2527 result->m_pkthdr.len += m->m_len;
2529 mtod(result, struct sadb_msg *)->sadb_msg_len =
2530 PFKEY_UNIT64(result->m_pkthdr.len);
2540 * get PFKEY message length for security policy and request.
2543 key_getspreqmsglen(sp)
2544 struct secpolicy *sp;
2548 tlen = sizeof(struct sadb_x_policy);
2550 /* if is the policy for ipsec ? */
2551 if (sp->policy != IPSEC_POLICY_IPSEC)
2554 /* get length of ipsec requests */
2556 struct ipsecrequest *isr;
2559 for (isr = sp->req; isr != NULL; isr = isr->next) {
2560 len = sizeof(struct sadb_x_ipsecrequest)
2561 + isr->saidx.src.sa.sa_len
2562 + isr->saidx.dst.sa.sa_len;
2564 tlen += PFKEY_ALIGN8(len);
2572 * SADB_SPDEXPIRE processing
2574 * <base, address(SD), lifetime(CH), policy>
2578 * others : error number
2582 struct secpolicy *sp;
2584 struct mbuf *result = NULL, *m;
2587 struct sadb_lifetime *lt;
2589 /* XXX: Why do we lock ? */
2591 IPSEC_ASSERT(sp != NULL, ("null secpolicy"));
2593 /* set msg header */
2594 m = key_setsadbmsg(SADB_X_SPDEXPIRE, 0, 0, 0, 0, 0);
2601 /* create lifetime extension (current and hard) */
2602 len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
2603 m = key_alloc_mbuf(len);
2604 if (!m || m->m_next) { /*XXX*/
2610 bzero(mtod(m, caddr_t), len);
2611 lt = mtod(m, struct sadb_lifetime *);
2612 lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
2613 lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
2614 lt->sadb_lifetime_allocations = 0;
2615 lt->sadb_lifetime_bytes = 0;
2616 lt->sadb_lifetime_addtime = sp->created;
2617 lt->sadb_lifetime_usetime = sp->lastused;
2618 lt = (struct sadb_lifetime *)(mtod(m, caddr_t) + len / 2);
2619 lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
2620 lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
2621 lt->sadb_lifetime_allocations = 0;
2622 lt->sadb_lifetime_bytes = 0;
2623 lt->sadb_lifetime_addtime = sp->lifetime;
2624 lt->sadb_lifetime_usetime = sp->validtime;
2628 * Note: do not send SADB_X_EXT_NAT_T_* here:
2629 * we are sending traffic endpoints.
2632 /* set sadb_address for source */
2633 m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
2635 sp->spidx.prefs, sp->spidx.ul_proto);
2642 /* set sadb_address for destination */
2643 m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
2645 sp->spidx.prefd, sp->spidx.ul_proto);
2660 if ((result->m_flags & M_PKTHDR) == 0) {
2665 if (result->m_len < sizeof(struct sadb_msg)) {
2666 result = m_pullup(result, sizeof(struct sadb_msg));
2667 if (result == NULL) {
2673 result->m_pkthdr.len = 0;
2674 for (m = result; m; m = m->m_next)
2675 result->m_pkthdr.len += m->m_len;
2677 mtod(result, struct sadb_msg *)->sadb_msg_len =
2678 PFKEY_UNIT64(result->m_pkthdr.len);
2680 return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
2688 /* %%% SAD management */
2690 * allocating a memory for new SA head, and copy from the values of mhp.
2691 * OUT: NULL : failure due to the lack of memory.
2692 * others : pointer to new SA head.
2694 static struct secashead *
2696 struct secasindex *saidx;
2698 struct secashead *newsah;
2700 IPSEC_ASSERT(saidx != NULL, ("null saidx"));
2702 newsah = malloc(sizeof(struct secashead), M_IPSEC_SAH, M_NOWAIT|M_ZERO);
2703 if (newsah != NULL) {
2705 for (i = 0; i < sizeof(newsah->savtree)/sizeof(newsah->savtree[0]); i++)
2706 LIST_INIT(&newsah->savtree[i]);
2707 newsah->saidx = *saidx;
2709 /* add to saidxtree */
2710 newsah->state = SADB_SASTATE_MATURE;
2713 LIST_INSERT_HEAD(&V_sahtree, newsah, chain);
2720 * delete SA index and all SA registerd.
2724 struct secashead *sah;
2726 struct secasvar *sav, *nextsav;
2730 IPSEC_ASSERT(sah != NULL, ("NULL sah"));
2731 SAHTREE_LOCK_ASSERT();
2733 /* searching all SA registerd in the secindex. */
2735 stateidx < _ARRAYLEN(saorder_state_any);
2737 u_int state = saorder_state_any[stateidx];
2738 LIST_FOREACH_SAFE(sav, &sah->savtree[state], chain, nextsav) {
2739 if (sav->refcnt == 0) {
2741 KEY_CHKSASTATE(state, sav->state, __func__);
2743 * do NOT call KEY_FREESAV here:
2744 * it will only delete the sav if refcnt == 1,
2745 * where we already know that refcnt == 0
2749 /* give up to delete this sa */
2754 if (!zombie) { /* delete only if there are savs */
2755 /* remove from tree of SA index */
2756 if (__LIST_CHAINED(sah))
2757 LIST_REMOVE(sah, chain);
2758 if (sah->route_cache.sa_route.ro_rt) {
2759 RTFREE(sah->route_cache.sa_route.ro_rt);
2760 sah->route_cache.sa_route.ro_rt = (struct rtentry *)NULL;
2762 free(sah, M_IPSEC_SAH);
2767 * allocating a new SA with LARVAL state. key_add() and key_getspi() call,
2768 * and copy the values of mhp into new buffer.
2769 * When SAD message type is GETSPI:
2770 * to set sequence number from acq_seq++,
2771 * to set zero to SPI.
2772 * not to call key_setsava().
2774 * others : pointer to new secasvar.
2776 * does not modify mbuf. does not free mbuf on error.
2778 static struct secasvar *
2779 key_newsav(m, mhp, sah, errp, where, tag)
2781 const struct sadb_msghdr *mhp;
2782 struct secashead *sah;
2787 struct secasvar *newsav;
2788 const struct sadb_sa *xsa;
2790 IPSEC_ASSERT(m != NULL, ("null mbuf"));
2791 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
2792 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
2793 IPSEC_ASSERT(sah != NULL, ("null secashead"));
2795 newsav = malloc(sizeof(struct secasvar), M_IPSEC_SA, M_NOWAIT|M_ZERO);
2796 if (newsav == NULL) {
2797 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
2802 switch (mhp->msg->sadb_msg_type) {
2806 #ifdef IPSEC_DOSEQCHECK
2807 /* sync sequence number */
2808 if (mhp->msg->sadb_msg_seq == 0)
2810 (V_acq_seq = (V_acq_seq == ~0 ? 1 : ++V_acq_seq));
2813 newsav->seq = mhp->msg->sadb_msg_seq;
2818 if (mhp->ext[SADB_EXT_SA] == NULL) {
2819 free(newsav, M_IPSEC_SA);
2821 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
2826 xsa = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA];
2827 newsav->spi = xsa->sadb_sa_spi;
2828 newsav->seq = mhp->msg->sadb_msg_seq;
2831 free(newsav, M_IPSEC_SA);
2838 /* copy sav values */
2839 if (mhp->msg->sadb_msg_type != SADB_GETSPI) {
2840 *errp = key_setsaval(newsav, m, mhp);
2842 free(newsav, M_IPSEC_SA);
2848 SECASVAR_LOCK_INIT(newsav);
2851 newsav->created = time_second;
2852 newsav->pid = mhp->msg->sadb_msg_pid;
2857 newsav->state = SADB_SASTATE_LARVAL;
2860 LIST_INSERT_TAIL(&sah->savtree[SADB_SASTATE_LARVAL], newsav,
2864 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
2865 printf("DP %s from %s:%u return SP:%p\n", __func__,
2866 where, tag, newsav));
2872 * free() SA variable entry.
2875 key_cleansav(struct secasvar *sav)
2878 * Cleanup xform state. Note that zeroize'ing causes the
2879 * keys to be cleared; otherwise we must do it ourself.
2881 if (sav->tdb_xform != NULL) {
2882 sav->tdb_xform->xf_zeroize(sav);
2883 sav->tdb_xform = NULL;
2885 KASSERT(sav->iv == NULL, ("iv but no xform"));
2886 if (sav->key_auth != NULL)
2887 bzero(sav->key_auth->key_data, _KEYLEN(sav->key_auth));
2888 if (sav->key_enc != NULL)
2889 bzero(sav->key_enc->key_data, _KEYLEN(sav->key_enc));
2891 if (sav->key_auth != NULL) {
2892 if (sav->key_auth->key_data != NULL)
2893 free(sav->key_auth->key_data, M_IPSEC_MISC);
2894 free(sav->key_auth, M_IPSEC_MISC);
2895 sav->key_auth = NULL;
2897 if (sav->key_enc != NULL) {
2898 if (sav->key_enc->key_data != NULL)
2899 free(sav->key_enc->key_data, M_IPSEC_MISC);
2900 free(sav->key_enc, M_IPSEC_MISC);
2901 sav->key_enc = NULL;
2904 bzero(sav->sched, sav->schedlen);
2905 free(sav->sched, M_IPSEC_MISC);
2908 if (sav->replay != NULL) {
2909 free(sav->replay, M_IPSEC_MISC);
2912 if (sav->lft_c != NULL) {
2913 free(sav->lft_c, M_IPSEC_MISC);
2916 if (sav->lft_h != NULL) {
2917 free(sav->lft_h, M_IPSEC_MISC);
2920 if (sav->lft_s != NULL) {
2921 free(sav->lft_s, M_IPSEC_MISC);
2927 * free() SA variable entry.
2931 struct secasvar *sav;
2933 IPSEC_ASSERT(sav != NULL, ("null sav"));
2934 IPSEC_ASSERT(sav->refcnt == 0, ("reference count %u > 0", sav->refcnt));
2936 /* remove from SA header */
2937 if (__LIST_CHAINED(sav))
2938 LIST_REMOVE(sav, chain);
2940 SECASVAR_LOCK_DESTROY(sav);
2941 free(sav, M_IPSEC_SA);
2948 * others : found, pointer to a SA.
2950 static struct secashead *
2952 struct secasindex *saidx;
2954 struct secashead *sah;
2957 LIST_FOREACH(sah, &V_sahtree, chain) {
2958 if (sah->state == SADB_SASTATE_DEAD)
2960 if (key_cmpsaidx(&sah->saidx, saidx, CMP_REQID))
2969 * check not to be duplicated SPI.
2970 * NOTE: this function is too slow due to searching all SAD.
2973 * others : found, pointer to a SA.
2975 static struct secasvar *
2976 key_checkspidup(saidx, spi)
2977 struct secasindex *saidx;
2980 struct secashead *sah;
2981 struct secasvar *sav;
2983 /* check address family */
2984 if (saidx->src.sa.sa_family != saidx->dst.sa.sa_family) {
2985 ipseclog((LOG_DEBUG, "%s: address family mismatched.\n",
2993 LIST_FOREACH(sah, &V_sahtree, chain) {
2994 if (!key_ismyaddr((struct sockaddr *)&sah->saidx.dst))
2996 sav = key_getsavbyspi(sah, spi);
3006 * search SAD litmited alive SA, protocol, SPI.
3009 * others : found, pointer to a SA.
3011 static struct secasvar *
3012 key_getsavbyspi(sah, spi)
3013 struct secashead *sah;
3016 struct secasvar *sav;
3017 u_int stateidx, state;
3020 SAHTREE_LOCK_ASSERT();
3021 /* search all status */
3023 stateidx < _ARRAYLEN(saorder_state_alive);
3026 state = saorder_state_alive[stateidx];
3027 LIST_FOREACH(sav, &sah->savtree[state], chain) {
3030 if (sav->state != state) {
3031 ipseclog((LOG_DEBUG, "%s: "
3032 "invalid sav->state (queue: %d SA: %d)\n",
3033 __func__, state, sav->state));
3037 if (sav->spi == spi)
3046 * copy SA values from PF_KEY message except *SPI, SEQ, PID, STATE and TYPE*.
3047 * You must update these if need.
3051 * does not modify mbuf. does not free mbuf on error.
3054 key_setsaval(sav, m, mhp)
3055 struct secasvar *sav;
3057 const struct sadb_msghdr *mhp;
3061 IPSEC_ASSERT(m != NULL, ("null mbuf"));
3062 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
3063 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
3065 /* initialization */
3067 sav->key_auth = NULL;
3068 sav->key_enc = NULL;
3075 sav->tdb_xform = NULL; /* transform */
3076 sav->tdb_encalgxform = NULL; /* encoding algorithm */
3077 sav->tdb_authalgxform = NULL; /* authentication algorithm */
3078 sav->tdb_compalgxform = NULL; /* compression algorithm */
3079 /* Initialize even if NAT-T not compiled in: */
3081 sav->natt_esp_frag_len = 0;
3084 if (mhp->ext[SADB_EXT_SA] != NULL) {
3085 const struct sadb_sa *sa0;
3087 sa0 = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA];
3088 if (mhp->extlen[SADB_EXT_SA] < sizeof(*sa0)) {
3093 sav->alg_auth = sa0->sadb_sa_auth;
3094 sav->alg_enc = sa0->sadb_sa_encrypt;
3095 sav->flags = sa0->sadb_sa_flags;
3098 if ((sa0->sadb_sa_flags & SADB_X_EXT_OLD) == 0) {
3099 sav->replay = (struct secreplay *)
3100 malloc(sizeof(struct secreplay)+sa0->sadb_sa_replay, M_IPSEC_MISC, M_NOWAIT|M_ZERO);
3101 if (sav->replay == NULL) {
3102 ipseclog((LOG_DEBUG, "%s: No more memory.\n",
3107 if (sa0->sadb_sa_replay != 0)
3108 sav->replay->bitmap = (caddr_t)(sav->replay+1);
3109 sav->replay->wsize = sa0->sadb_sa_replay;
3113 /* Authentication keys */
3114 if (mhp->ext[SADB_EXT_KEY_AUTH] != NULL) {
3115 const struct sadb_key *key0;
3118 key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_AUTH];
3119 len = mhp->extlen[SADB_EXT_KEY_AUTH];
3122 if (len < sizeof(*key0)) {
3126 switch (mhp->msg->sadb_msg_satype) {
3127 case SADB_SATYPE_AH:
3128 case SADB_SATYPE_ESP:
3129 case SADB_X_SATYPE_TCPSIGNATURE:
3130 if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
3131 sav->alg_auth != SADB_X_AALG_NULL)
3134 case SADB_X_SATYPE_IPCOMP:
3140 ipseclog((LOG_DEBUG, "%s: invalid key_auth values.\n",
3145 sav->key_auth = (struct seckey *)key_dup_keymsg(key0, len,
3147 if (sav->key_auth == NULL ) {
3148 ipseclog((LOG_DEBUG, "%s: No more memory.\n",
3155 /* Encryption key */
3156 if (mhp->ext[SADB_EXT_KEY_ENCRYPT] != NULL) {
3157 const struct sadb_key *key0;
3160 key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_ENCRYPT];
3161 len = mhp->extlen[SADB_EXT_KEY_ENCRYPT];
3164 if (len < sizeof(*key0)) {
3168 switch (mhp->msg->sadb_msg_satype) {
3169 case SADB_SATYPE_ESP:
3170 if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
3171 sav->alg_enc != SADB_EALG_NULL) {
3175 sav->key_enc = (struct seckey *)key_dup_keymsg(key0,
3178 if (sav->key_enc == NULL) {
3179 ipseclog((LOG_DEBUG, "%s: No more memory.\n",
3185 case SADB_X_SATYPE_IPCOMP:
3186 if (len != PFKEY_ALIGN8(sizeof(struct sadb_key)))
3188 sav->key_enc = NULL; /*just in case*/
3190 case SADB_SATYPE_AH:
3191 case SADB_X_SATYPE_TCPSIGNATURE:
3197 ipseclog((LOG_DEBUG, "%s: invalid key_enc value.\n",
3206 switch (mhp->msg->sadb_msg_satype) {
3207 case SADB_SATYPE_AH:
3208 error = xform_init(sav, XF_AH);
3210 case SADB_SATYPE_ESP:
3211 error = xform_init(sav, XF_ESP);
3213 case SADB_X_SATYPE_IPCOMP:
3214 error = xform_init(sav, XF_IPCOMP);
3216 case SADB_X_SATYPE_TCPSIGNATURE:
3217 error = xform_init(sav, XF_TCPSIGNATURE);
3221 ipseclog((LOG_DEBUG, "%s: unable to initialize SA type %u.\n",
3222 __func__, mhp->msg->sadb_msg_satype));
3227 sav->created = time_second;
3229 /* make lifetime for CURRENT */
3230 sav->lft_c = malloc(sizeof(struct seclifetime), M_IPSEC_MISC, M_NOWAIT);
3231 if (sav->lft_c == NULL) {
3232 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
3237 sav->lft_c->allocations = 0;
3238 sav->lft_c->bytes = 0;
3239 sav->lft_c->addtime = time_second;
3240 sav->lft_c->usetime = 0;
3242 /* lifetimes for HARD and SOFT */
3244 const struct sadb_lifetime *lft0;
3246 lft0 = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_HARD];
3248 if (mhp->extlen[SADB_EXT_LIFETIME_HARD] < sizeof(*lft0)) {
3252 sav->lft_h = key_dup_lifemsg(lft0, M_IPSEC_MISC);
3253 if (sav->lft_h == NULL) {
3254 ipseclog((LOG_DEBUG, "%s: No more memory.\n",__func__));
3258 /* to be initialize ? */
3261 lft0 = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_SOFT];
3263 if (mhp->extlen[SADB_EXT_LIFETIME_SOFT] < sizeof(*lft0)) {
3267 sav->lft_s = key_dup_lifemsg(lft0, M_IPSEC_MISC);
3268 if (sav->lft_s == NULL) {
3269 ipseclog((LOG_DEBUG, "%s: No more memory.\n",__func__));
3273 /* to be initialize ? */
3280 /* initialization */
3287 * validation with a secasvar entry, and set SADB_SATYPE_MATURE.
3292 key_mature(struct secasvar *sav)
3296 /* check SPI value */
3297 switch (sav->sah->saidx.proto) {
3301 * RFC 4302, 2.4. Security Parameters Index (SPI), SPI values
3302 * 1-255 reserved by IANA for future use,
3303 * 0 for implementation specific, local use.
3305 if (ntohl(sav->spi) <= 255) {
3306 ipseclog((LOG_DEBUG, "%s: illegal range of SPI %u.\n",
3307 __func__, (u_int32_t)ntohl(sav->spi)));
3314 switch (sav->sah->saidx.proto) {
3317 if ((sav->flags & (SADB_X_EXT_OLD|SADB_X_EXT_DERIV)) ==
3318 (SADB_X_EXT_OLD|SADB_X_EXT_DERIV)) {
3319 ipseclog((LOG_DEBUG, "%s: invalid flag (derived) "
3320 "given to old-esp.\n", __func__));
3323 error = xform_init(sav, XF_ESP);
3327 if (sav->flags & SADB_X_EXT_DERIV) {
3328 ipseclog((LOG_DEBUG, "%s: invalid flag (derived) "
3329 "given to AH SA.\n", __func__));
3332 if (sav->alg_enc != SADB_EALG_NONE) {
3333 ipseclog((LOG_DEBUG, "%s: protocol and algorithm "
3334 "mismated.\n", __func__));
3337 error = xform_init(sav, XF_AH);
3339 case IPPROTO_IPCOMP:
3340 if (sav->alg_auth != SADB_AALG_NONE) {
3341 ipseclog((LOG_DEBUG, "%s: protocol and algorithm "
3342 "mismated.\n", __func__));
3345 if ((sav->flags & SADB_X_EXT_RAWCPI) == 0
3346 && ntohl(sav->spi) >= 0x10000) {
3347 ipseclog((LOG_DEBUG, "%s: invalid cpi for IPComp.\n",
3351 error = xform_init(sav, XF_IPCOMP);
3354 if (sav->alg_enc != SADB_EALG_NONE) {
3355 ipseclog((LOG_DEBUG, "%s: protocol and algorithm "
3356 "mismated.\n", __func__));
3359 error = xform_init(sav, XF_TCPSIGNATURE);
3362 ipseclog((LOG_DEBUG, "%s: Invalid satype.\n", __func__));
3363 error = EPROTONOSUPPORT;
3368 key_sa_chgstate(sav, SADB_SASTATE_MATURE);
3375 * subroutine for SADB_GET and SADB_DUMP.
3377 static struct mbuf *
3378 key_setdumpsa(struct secasvar *sav, u_int8_t type, u_int8_t satype,
3379 u_int32_t seq, u_int32_t pid)
3381 struct mbuf *result = NULL, *tres = NULL, *m;
3384 SADB_EXT_SA, SADB_X_EXT_SA2,
3385 SADB_EXT_LIFETIME_HARD, SADB_EXT_LIFETIME_SOFT,
3386 SADB_EXT_LIFETIME_CURRENT, SADB_EXT_ADDRESS_SRC,
3387 SADB_EXT_ADDRESS_DST, SADB_EXT_ADDRESS_PROXY, SADB_EXT_KEY_AUTH,
3388 SADB_EXT_KEY_ENCRYPT, SADB_EXT_IDENTITY_SRC,
3389 SADB_EXT_IDENTITY_DST, SADB_EXT_SENSITIVITY,
3391 SADB_X_EXT_NAT_T_TYPE,
3392 SADB_X_EXT_NAT_T_SPORT, SADB_X_EXT_NAT_T_DPORT,
3393 SADB_X_EXT_NAT_T_OAI, SADB_X_EXT_NAT_T_OAR,
3394 SADB_X_EXT_NAT_T_FRAG,
3398 m = key_setsadbmsg(type, 0, satype, seq, pid, sav->refcnt);
3403 for (i = sizeof(dumporder)/sizeof(dumporder[0]) - 1; i >= 0; i--) {
3405 switch (dumporder[i]) {
3407 m = key_setsadbsa(sav);
3412 case SADB_X_EXT_SA2:
3413 m = key_setsadbxsa2(sav->sah->saidx.mode,
3414 sav->replay ? sav->replay->count : 0,
3415 sav->sah->saidx.reqid);
3420 case SADB_EXT_ADDRESS_SRC:
3421 m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
3422 &sav->sah->saidx.src.sa,
3423 FULLMASK, IPSEC_ULPROTO_ANY);
3428 case SADB_EXT_ADDRESS_DST:
3429 m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
3430 &sav->sah->saidx.dst.sa,
3431 FULLMASK, IPSEC_ULPROTO_ANY);
3436 case SADB_EXT_KEY_AUTH:
3439 m = key_setkey(sav->key_auth, SADB_EXT_KEY_AUTH);
3444 case SADB_EXT_KEY_ENCRYPT:
3447 m = key_setkey(sav->key_enc, SADB_EXT_KEY_ENCRYPT);
3452 case SADB_EXT_LIFETIME_CURRENT:
3455 m = key_setlifetime(sav->lft_c,
3456 SADB_EXT_LIFETIME_CURRENT);
3461 case SADB_EXT_LIFETIME_HARD:
3464 m = key_setlifetime(sav->lft_h,
3465 SADB_EXT_LIFETIME_HARD);
3470 case SADB_EXT_LIFETIME_SOFT:
3473 m = key_setlifetime(sav->lft_s,
3474 SADB_EXT_LIFETIME_SOFT);
3481 case SADB_X_EXT_NAT_T_TYPE:
3482 m = key_setsadbxtype(sav->natt_type);
3487 case SADB_X_EXT_NAT_T_DPORT:
3488 m = key_setsadbxport(
3489 KEY_PORTFROMSADDR(&sav->sah->saidx.dst),
3490 SADB_X_EXT_NAT_T_DPORT);
3495 case SADB_X_EXT_NAT_T_SPORT:
3496 m = key_setsadbxport(
3497 KEY_PORTFROMSADDR(&sav->sah->saidx.src),
3498 SADB_X_EXT_NAT_T_SPORT);
3503 case SADB_X_EXT_NAT_T_OAI:
3504 case SADB_X_EXT_NAT_T_OAR:
3505 case SADB_X_EXT_NAT_T_FRAG:
3506 /* We do not (yet) support those. */
3510 case SADB_EXT_ADDRESS_PROXY:
3511 case SADB_EXT_IDENTITY_SRC:
3512 case SADB_EXT_IDENTITY_DST:
3513 /* XXX: should we brought from SPD ? */
3514 case SADB_EXT_SENSITIVITY:
3527 m_cat(result, tres);
3528 if (result->m_len < sizeof(struct sadb_msg)) {
3529 result = m_pullup(result, sizeof(struct sadb_msg));
3534 result->m_pkthdr.len = 0;
3535 for (m = result; m; m = m->m_next)
3536 result->m_pkthdr.len += m->m_len;
3538 mtod(result, struct sadb_msg *)->sadb_msg_len =
3539 PFKEY_UNIT64(result->m_pkthdr.len);
3550 * set data into sadb_msg.
3552 static struct mbuf *
3553 key_setsadbmsg(u_int8_t type, u_int16_t tlen, u_int8_t satype, u_int32_t seq,
3554 pid_t pid, u_int16_t reserved)
3560 len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
3563 MGETHDR(m, M_DONTWAIT, MT_DATA);
3564 if (m && len > MHLEN) {
3565 MCLGET(m, M_DONTWAIT);
3566 if ((m->m_flags & M_EXT) == 0) {
3573 m->m_pkthdr.len = m->m_len = len;
3576 p = mtod(m, struct sadb_msg *);
3579 p->sadb_msg_version = PF_KEY_V2;
3580 p->sadb_msg_type = type;
3581 p->sadb_msg_errno = 0;
3582 p->sadb_msg_satype = satype;
3583 p->sadb_msg_len = PFKEY_UNIT64(tlen);
3584 p->sadb_msg_reserved = reserved;
3585 p->sadb_msg_seq = seq;
3586 p->sadb_msg_pid = (u_int32_t)pid;
3592 * copy secasvar data into sadb_address.
3594 static struct mbuf *
3596 struct secasvar *sav;
3602 len = PFKEY_ALIGN8(sizeof(struct sadb_sa));
3603 m = key_alloc_mbuf(len);
3604 if (!m || m->m_next) { /*XXX*/
3610 p = mtod(m, struct sadb_sa *);
3613 p->sadb_sa_len = PFKEY_UNIT64(len);
3614 p->sadb_sa_exttype = SADB_EXT_SA;
3615 p->sadb_sa_spi = sav->spi;
3616 p->sadb_sa_replay = (sav->replay != NULL ? sav->replay->wsize : 0);
3617 p->sadb_sa_state = sav->state;
3618 p->sadb_sa_auth = sav->alg_auth;
3619 p->sadb_sa_encrypt = sav->alg_enc;
3620 p->sadb_sa_flags = sav->flags;
3626 * set data into sadb_address.
3628 static struct mbuf *
3629 key_setsadbaddr(u_int16_t exttype, const struct sockaddr *saddr, u_int8_t prefixlen, u_int16_t ul_proto)
3632 struct sadb_address *p;
3635 len = PFKEY_ALIGN8(sizeof(struct sadb_address)) +
3636 PFKEY_ALIGN8(saddr->sa_len);
3637 m = key_alloc_mbuf(len);
3638 if (!m || m->m_next) { /*XXX*/
3644 p = mtod(m, struct sadb_address *);
3647 p->sadb_address_len = PFKEY_UNIT64(len);
3648 p->sadb_address_exttype = exttype;
3649 p->sadb_address_proto = ul_proto;
3650 if (prefixlen == FULLMASK) {
3651 switch (saddr->sa_family) {
3653 prefixlen = sizeof(struct in_addr) << 3;
3656 prefixlen = sizeof(struct in6_addr) << 3;
3662 p->sadb_address_prefixlen = prefixlen;
3663 p->sadb_address_reserved = 0;
3666 mtod(m, caddr_t) + PFKEY_ALIGN8(sizeof(struct sadb_address)),
3673 * set data into sadb_x_sa2.
3675 static struct mbuf *
3676 key_setsadbxsa2(u_int8_t mode, u_int32_t seq, u_int32_t reqid)
3679 struct sadb_x_sa2 *p;
3682 len = PFKEY_ALIGN8(sizeof(struct sadb_x_sa2));
3683 m = key_alloc_mbuf(len);
3684 if (!m || m->m_next) { /*XXX*/
3690 p = mtod(m, struct sadb_x_sa2 *);
3693 p->sadb_x_sa2_len = PFKEY_UNIT64(len);
3694 p->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
3695 p->sadb_x_sa2_mode = mode;
3696 p->sadb_x_sa2_reserved1 = 0;
3697 p->sadb_x_sa2_reserved2 = 0;
3698 p->sadb_x_sa2_sequence = seq;
3699 p->sadb_x_sa2_reqid = reqid;
3706 * Set a type in sadb_x_nat_t_type.
3708 static struct mbuf *
3709 key_setsadbxtype(u_int16_t type)
3713 struct sadb_x_nat_t_type *p;
3715 len = PFKEY_ALIGN8(sizeof(struct sadb_x_nat_t_type));
3717 m = key_alloc_mbuf(len);
3718 if (!m || m->m_next) { /*XXX*/
3724 p = mtod(m, struct sadb_x_nat_t_type *);
3727 p->sadb_x_nat_t_type_len = PFKEY_UNIT64(len);
3728 p->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE;
3729 p->sadb_x_nat_t_type_type = type;
3734 * Set a port in sadb_x_nat_t_port.
3735 * In contrast to default RFC 2367 behaviour, port is in network byte order.
3737 static struct mbuf *
3738 key_setsadbxport(u_int16_t port, u_int16_t type)
3742 struct sadb_x_nat_t_port *p;
3744 len = PFKEY_ALIGN8(sizeof(struct sadb_x_nat_t_port));
3746 m = key_alloc_mbuf(len);
3747 if (!m || m->m_next) { /*XXX*/
3753 p = mtod(m, struct sadb_x_nat_t_port *);
3756 p->sadb_x_nat_t_port_len = PFKEY_UNIT64(len);
3757 p->sadb_x_nat_t_port_exttype = type;
3758 p->sadb_x_nat_t_port_port = port;
3764 * Get port from sockaddr. Port is in network byte order.
3767 key_portfromsaddr(struct sockaddr *sa)
3770 switch (sa->sa_family) {
3773 return ((struct sockaddr_in *)sa)->sin_port;
3777 return ((struct sockaddr_in6 *)sa)->sin6_port;
3780 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
3781 printf("DP %s unexpected address family %d\n",
3782 __func__, sa->sa_family));
3785 #endif /* IPSEC_NAT_T */
3788 * Set port in struct sockaddr. Port is in network byte order.
3791 key_porttosaddr(struct sockaddr *sa, u_int16_t port)
3794 switch (sa->sa_family) {
3797 ((struct sockaddr_in *)sa)->sin_port = port;
3802 ((struct sockaddr_in6 *)sa)->sin6_port = port;
3806 ipseclog((LOG_DEBUG, "%s: unexpected address family %d.\n",
3807 __func__, sa->sa_family));
3813 * set data into sadb_x_policy
3815 static struct mbuf *
3816 key_setsadbxpolicy(u_int16_t type, u_int8_t dir, u_int32_t id)
3819 struct sadb_x_policy *p;
3822 len = PFKEY_ALIGN8(sizeof(struct sadb_x_policy));
3823 m = key_alloc_mbuf(len);
3824 if (!m || m->m_next) { /*XXX*/
3830 p = mtod(m, struct sadb_x_policy *);
3833 p->sadb_x_policy_len = PFKEY_UNIT64(len);
3834 p->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
3835 p->sadb_x_policy_type = type;
3836 p->sadb_x_policy_dir = dir;
3837 p->sadb_x_policy_id = id;
3843 /* Take a key message (sadb_key) from the socket and turn it into one
3844 * of the kernel's key structures (seckey).
3846 * IN: pointer to the src
3847 * OUT: NULL no more memory
3850 key_dup_keymsg(const struct sadb_key *src, u_int len,
3851 struct malloc_type *type)
3854 dst = (struct seckey *)malloc(sizeof(struct seckey), type, M_NOWAIT);
3856 dst->bits = src->sadb_key_bits;
3857 dst->key_data = (char *)malloc(len, type, M_NOWAIT);
3858 if (dst->key_data != NULL) {
3859 bcopy((const char *)src + sizeof(struct sadb_key),
3860 dst->key_data, len);
3862 ipseclog((LOG_DEBUG, "%s: No more memory.\n",
3868 ipseclog((LOG_DEBUG, "%s: No more memory.\n",
3875 /* Take a lifetime message (sadb_lifetime) passed in on a socket and
3876 * turn it into one of the kernel's lifetime structures (seclifetime).
3878 * IN: pointer to the destination, source and malloc type
3879 * OUT: NULL, no more memory
3882 static struct seclifetime *
3883 key_dup_lifemsg(const struct sadb_lifetime *src,
3884 struct malloc_type *type)
3886 struct seclifetime *dst = NULL;
3888 dst = (struct seclifetime *)malloc(sizeof(struct seclifetime),
3892 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
3894 dst->allocations = src->sadb_lifetime_allocations;
3895 dst->bytes = src->sadb_lifetime_bytes;
3896 dst->addtime = src->sadb_lifetime_addtime;
3897 dst->usetime = src->sadb_lifetime_usetime;
3902 /* compare my own address
3903 * OUT: 1: true, i.e. my address.
3908 struct sockaddr *sa;
3911 struct sockaddr_in *sin;
3912 struct in_ifaddr *ia;
3915 IPSEC_ASSERT(sa != NULL, ("null sockaddr"));
3917 switch (sa->sa_family) {
3920 sin = (struct sockaddr_in *)sa;
3922 for (ia = V_in_ifaddrhead.tqh_first; ia;
3923 ia = ia->ia_link.tqe_next)
3925 if (sin->sin_family == ia->ia_addr.sin_family &&
3926 sin->sin_len == ia->ia_addr.sin_len &&
3927 sin->sin_addr.s_addr == ia->ia_addr.sin_addr.s_addr)
3929 IN_IFADDR_RUNLOCK();
3933 IN_IFADDR_RUNLOCK();
3938 return key_ismyaddr6((struct sockaddr_in6 *)sa);
3947 * compare my own address for IPv6.
3950 * NOTE: derived ip6_input() in KAME. This is necessary to modify more.
3952 #include <netinet6/in6_var.h>
3956 struct sockaddr_in6 *sin6;
3958 struct in6_ifaddr *ia;
3960 struct in6_multi *in6m;
3964 TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) {
3965 if (key_sockaddrcmp((struct sockaddr *)&sin6,
3966 (struct sockaddr *)&ia->ia_addr, 0) == 0) {
3967 IN6_IFADDR_RUNLOCK();
3974 * XXX why do we care about multlicast here while we don't care
3975 * about IPv4 multicast??
3979 IN6_LOOKUP_MULTI(sin6->sin6_addr, ia->ia_ifp, in6m);
3981 IN6_IFADDR_RUNLOCK();
3986 IN6_IFADDR_RUNLOCK();
3988 /* loopback, just for safety */
3989 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))
3997 * compare two secasindex structure.
3998 * flag can specify to compare 2 saidxes.
3999 * compare two secasindex structure without both mode and reqid.
4000 * don't compare port.
4002 * saidx0: source, it can be in SAD.
4010 const struct secasindex *saidx0,
4011 const struct secasindex *saidx1,
4017 if (saidx0 == NULL && saidx1 == NULL)
4020 if (saidx0 == NULL || saidx1 == NULL)
4023 if (saidx0->proto != saidx1->proto)
4026 if (flag == CMP_EXACTLY) {
4027 if (saidx0->mode != saidx1->mode)
4029 if (saidx0->reqid != saidx1->reqid)
4031 if (bcmp(&saidx0->src, &saidx1->src, saidx0->src.sa.sa_len) != 0 ||
4032 bcmp(&saidx0->dst, &saidx1->dst, saidx0->dst.sa.sa_len) != 0)
4036 /* CMP_MODE_REQID, CMP_REQID, CMP_HEAD */
4037 if (flag == CMP_MODE_REQID
4038 ||flag == CMP_REQID) {
4040 * If reqid of SPD is non-zero, unique SA is required.
4041 * The result must be of same reqid in this case.
4043 if (saidx1->reqid != 0 && saidx0->reqid != saidx1->reqid)
4047 if (flag == CMP_MODE_REQID) {
4048 if (saidx0->mode != IPSEC_MODE_ANY
4049 && saidx0->mode != saidx1->mode)
4055 * If NAT-T is enabled, check ports for tunnel mode.
4056 * Do not check ports if they are set to zero in the SPD.
4057 * Also do not do it for transport mode, as there is no
4058 * port information available in the SP.
4060 if (saidx1->mode == IPSEC_MODE_TUNNEL &&
4061 saidx1->src.sa.sa_family == AF_INET &&
4062 saidx1->dst.sa.sa_family == AF_INET &&
4063 ((const struct sockaddr_in *)(&saidx1->src))->sin_port &&
4064 ((const struct sockaddr_in *)(&saidx1->dst))->sin_port)
4066 #endif /* IPSEC_NAT_T */
4068 if (key_sockaddrcmp(&saidx0->src.sa, &saidx1->src.sa, chkport) != 0) {
4071 if (key_sockaddrcmp(&saidx0->dst.sa, &saidx1->dst.sa, chkport) != 0) {
4080 * compare two secindex structure exactly.
4082 * spidx0: source, it is often in SPD.
4083 * spidx1: object, it is often from PFKEY message.
4089 key_cmpspidx_exactly(
4090 struct secpolicyindex *spidx0,
4091 struct secpolicyindex *spidx1)
4094 if (spidx0 == NULL && spidx1 == NULL)
4097 if (spidx0 == NULL || spidx1 == NULL)
4100 if (spidx0->prefs != spidx1->prefs
4101 || spidx0->prefd != spidx1->prefd
4102 || spidx0->ul_proto != spidx1->ul_proto)
4105 return key_sockaddrcmp(&spidx0->src.sa, &spidx1->src.sa, 1) == 0 &&
4106 key_sockaddrcmp(&spidx0->dst.sa, &spidx1->dst.sa, 1) == 0;
4110 * compare two secindex structure with mask.
4112 * spidx0: source, it is often in SPD.
4113 * spidx1: object, it is often from IP header.
4119 key_cmpspidx_withmask(
4120 struct secpolicyindex *spidx0,
4121 struct secpolicyindex *spidx1)
4124 if (spidx0 == NULL && spidx1 == NULL)
4127 if (spidx0 == NULL || spidx1 == NULL)
4130 if (spidx0->src.sa.sa_family != spidx1->src.sa.sa_family ||
4131 spidx0->dst.sa.sa_family != spidx1->dst.sa.sa_family ||
4132 spidx0->src.sa.sa_len != spidx1->src.sa.sa_len ||
4133 spidx0->dst.sa.sa_len != spidx1->dst.sa.sa_len)
4136 /* if spidx.ul_proto == IPSEC_ULPROTO_ANY, ignore. */
4137 if (spidx0->ul_proto != (u_int16_t)IPSEC_ULPROTO_ANY
4138 && spidx0->ul_proto != spidx1->ul_proto)
4141 switch (spidx0->src.sa.sa_family) {
4143 if (spidx0->src.sin.sin_port != IPSEC_PORT_ANY
4144 && spidx0->src.sin.sin_port != spidx1->src.sin.sin_port)
4146 if (!key_bbcmp(&spidx0->src.sin.sin_addr,
4147 &spidx1->src.sin.sin_addr, spidx0->prefs))
4151 if (spidx0->src.sin6.sin6_port != IPSEC_PORT_ANY
4152 && spidx0->src.sin6.sin6_port != spidx1->src.sin6.sin6_port)
4155 * scope_id check. if sin6_scope_id is 0, we regard it
4156 * as a wildcard scope, which matches any scope zone ID.
4158 if (spidx0->src.sin6.sin6_scope_id &&
4159 spidx1->src.sin6.sin6_scope_id &&
4160 spidx0->src.sin6.sin6_scope_id != spidx1->src.sin6.sin6_scope_id)
4162 if (!key_bbcmp(&spidx0->src.sin6.sin6_addr,
4163 &spidx1->src.sin6.sin6_addr, spidx0->prefs))
4168 if (bcmp(&spidx0->src, &spidx1->src, spidx0->src.sa.sa_len) != 0)
4173 switch (spidx0->dst.sa.sa_family) {
4175 if (spidx0->dst.sin.sin_port != IPSEC_PORT_ANY
4176 && spidx0->dst.sin.sin_port != spidx1->dst.sin.sin_port)
4178 if (!key_bbcmp(&spidx0->dst.sin.sin_addr,
4179 &spidx1->dst.sin.sin_addr, spidx0->prefd))
4183 if (spidx0->dst.sin6.sin6_port != IPSEC_PORT_ANY
4184 && spidx0->dst.sin6.sin6_port != spidx1->dst.sin6.sin6_port)
4187 * scope_id check. if sin6_scope_id is 0, we regard it
4188 * as a wildcard scope, which matches any scope zone ID.
4190 if (spidx0->dst.sin6.sin6_scope_id &&
4191 spidx1->dst.sin6.sin6_scope_id &&
4192 spidx0->dst.sin6.sin6_scope_id != spidx1->dst.sin6.sin6_scope_id)
4194 if (!key_bbcmp(&spidx0->dst.sin6.sin6_addr,
4195 &spidx1->dst.sin6.sin6_addr, spidx0->prefd))
4200 if (bcmp(&spidx0->dst, &spidx1->dst, spidx0->dst.sa.sa_len) != 0)
4205 /* XXX Do we check other field ? e.g. flowinfo */
4210 /* returns 0 on match */
4213 const struct sockaddr *sa1,
4214 const struct sockaddr *sa2,
4220 #define satosin(s) ((const struct sockaddr_in *)s)
4224 #define satosin6(s) ((const struct sockaddr_in6 *)s)
4225 if (sa1->sa_family != sa2->sa_family || sa1->sa_len != sa2->sa_len)
4228 switch (sa1->sa_family) {
4230 if (sa1->sa_len != sizeof(struct sockaddr_in))
4232 if (satosin(sa1)->sin_addr.s_addr !=
4233 satosin(sa2)->sin_addr.s_addr) {
4236 if (port && satosin(sa1)->sin_port != satosin(sa2)->sin_port)
4240 if (sa1->sa_len != sizeof(struct sockaddr_in6))
4241 return 1; /*EINVAL*/
4242 if (satosin6(sa1)->sin6_scope_id !=
4243 satosin6(sa2)->sin6_scope_id) {
4246 if (!IN6_ARE_ADDR_EQUAL(&satosin6(sa1)->sin6_addr,
4247 &satosin6(sa2)->sin6_addr)) {
4251 satosin6(sa1)->sin6_port != satosin6(sa2)->sin6_port) {
4256 if (bcmp(sa1, sa2, sa1->sa_len) != 0)
4267 * compare two buffers with mask.
4271 * bits: Number of bits to compare
4277 key_bbcmp(const void *a1, const void *a2, u_int bits)
4279 const unsigned char *p1 = a1;
4280 const unsigned char *p2 = a2;
4282 /* XXX: This could be considerably faster if we compare a word
4283 * at a time, but it is complicated on LSB Endian machines */
4285 /* Handle null pointers */
4286 if (p1 == NULL || p2 == NULL)
4296 u_int8_t mask = ~((1<<(8-bits))-1);
4297 if ((*p1 & mask) != (*p2 & mask))
4300 return 1; /* Match! */
4304 key_flush_spd(time_t now)
4306 static u_int16_t sptree_scangen = 0;
4307 u_int16_t gen = sptree_scangen++;
4308 struct secpolicy *sp;
4312 for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
4315 LIST_FOREACH(sp, &V_sptree[dir], chain) {
4316 if (sp->scangen == gen) /* previously handled */
4319 if (sp->state == IPSEC_SPSTATE_DEAD &&
4322 * Ensure that we only decrease refcnt once,
4323 * when we're the last consumer.
4324 * Directly call SP_DELREF/key_delsp instead
4325 * of KEY_FREESP to avoid unlocking/relocking
4326 * SPTREE_LOCK before key_delsp: may refcnt
4327 * be increased again during that time ?
4328 * NB: also clean entries created by
4336 if (sp->lifetime == 0 && sp->validtime == 0)
4338 if ((sp->lifetime && now - sp->created > sp->lifetime)
4339 || (sp->validtime && now - sp->lastused > sp->validtime)) {
4340 sp->state = IPSEC_SPSTATE_DEAD;
4351 key_flush_sad(time_t now)
4353 struct secashead *sah, *nextsah;
4354 struct secasvar *sav, *nextsav;
4358 LIST_FOREACH_SAFE(sah, &V_sahtree, chain, nextsah) {
4359 /* if sah has been dead, then delete it and process next sah. */
4360 if (sah->state == SADB_SASTATE_DEAD) {
4365 /* if LARVAL entry doesn't become MATURE, delete it. */
4366 LIST_FOREACH_SAFE(sav, &sah->savtree[SADB_SASTATE_LARVAL], chain, nextsav) {
4367 /* Need to also check refcnt for a larval SA ??? */
4368 if (now - sav->created > V_key_larval_lifetime)
4373 * check MATURE entry to start to send expire message
4376 LIST_FOREACH_SAFE(sav, &sah->savtree[SADB_SASTATE_MATURE], chain, nextsav) {
4377 /* we don't need to check. */
4378 if (sav->lft_s == NULL)
4382 if (sav->lft_c == NULL) {
4383 ipseclog((LOG_DEBUG,"%s: there is no CURRENT "
4384 "time, why?\n", __func__));
4388 /* check SOFT lifetime */
4389 if (sav->lft_s->addtime != 0 &&
4390 now - sav->created > sav->lft_s->addtime) {
4391 key_sa_chgstate(sav, SADB_SASTATE_DYING);
4393 * Actually, only send expire message if
4394 * SA has been used, as it was done before,
4395 * but should we always send such message,
4396 * and let IKE daemon decide if it should be
4397 * renegotiated or not ?
4398 * XXX expire message will actually NOT be
4399 * sent if SA is only used after soft
4400 * lifetime has been reached, see below
4403 if (sav->lft_c->usetime != 0)
4406 /* check SOFT lifetime by bytes */
4408 * XXX I don't know the way to delete this SA
4409 * when new SA is installed. Caution when it's
4410 * installed too big lifetime by time.
4412 else if (sav->lft_s->bytes != 0 &&
4413 sav->lft_s->bytes < sav->lft_c->bytes) {
4415 key_sa_chgstate(sav, SADB_SASTATE_DYING);
4417 * XXX If we keep to send expire
4418 * message in the status of
4419 * DYING. Do remove below code.
4425 /* check DYING entry to change status to DEAD. */
4426 LIST_FOREACH_SAFE(sav, &sah->savtree[SADB_SASTATE_DYING], chain, nextsav) {
4427 /* we don't need to check. */
4428 if (sav->lft_h == NULL)
4432 if (sav->lft_c == NULL) {
4433 ipseclog((LOG_DEBUG, "%s: there is no CURRENT "
4434 "time, why?\n", __func__));
4438 if (sav->lft_h->addtime != 0 &&
4439 now - sav->created > sav->lft_h->addtime) {
4440 key_sa_chgstate(sav, SADB_SASTATE_DEAD);
4443 #if 0 /* XXX Should we keep to send expire message until HARD lifetime ? */
4444 else if (sav->lft_s != NULL
4445 && sav->lft_s->addtime != 0
4446 && now - sav->created > sav->lft_s->addtime) {
4448 * XXX: should be checked to be
4449 * installed the valid SA.
4453 * If there is no SA then sending
4459 /* check HARD lifetime by bytes */
4460 else if (sav->lft_h->bytes != 0 &&
4461 sav->lft_h->bytes < sav->lft_c->bytes) {
4462 key_sa_chgstate(sav, SADB_SASTATE_DEAD);
4467 /* delete entry in DEAD */
4468 LIST_FOREACH_SAFE(sav, &sah->savtree[SADB_SASTATE_DEAD], chain, nextsav) {
4470 if (sav->state != SADB_SASTATE_DEAD) {
4471 ipseclog((LOG_DEBUG, "%s: invalid sav->state "
4472 "(queue: %d SA: %d): kill it anyway\n",
4474 SADB_SASTATE_DEAD, sav->state));
4477 * do not call key_freesav() here.
4478 * sav should already be freed, and sav->refcnt
4479 * shows other references to sav
4480 * (such as from SPD).
4488 key_flush_acq(time_t now)
4490 struct secacq *acq, *nextacq;
4494 for (acq = LIST_FIRST(&V_acqtree); acq != NULL; acq = nextacq) {
4495 nextacq = LIST_NEXT(acq, chain);
4496 if (now - acq->created > V_key_blockacq_lifetime
4497 && __LIST_CHAINED(acq)) {
4498 LIST_REMOVE(acq, chain);
4499 free(acq, M_IPSEC_SAQ);
4506 key_flush_spacq(time_t now)
4508 struct secspacq *acq, *nextacq;
4512 for (acq = LIST_FIRST(&V_spacqtree); acq != NULL; acq = nextacq) {
4513 nextacq = LIST_NEXT(acq, chain);
4514 if (now - acq->created > V_key_blockacq_lifetime
4515 && __LIST_CHAINED(acq)) {
4516 LIST_REMOVE(acq, chain);
4517 free(acq, M_IPSEC_SAQ);
4525 * scanning SPD and SAD to check status for each entries,
4526 * and do to remove or to expire.
4527 * XXX: year 2038 problem may remain.
4530 key_timehandler(void)
4532 VNET_ITERATOR_DECL(vnet_iter);
4533 time_t now = time_second;
4535 VNET_LIST_RLOCK_NOSLEEP();
4536 VNET_FOREACH(vnet_iter) {
4537 CURVNET_SET(vnet_iter);
4541 key_flush_spacq(now);
4544 VNET_LIST_RUNLOCK_NOSLEEP();
4546 #ifndef IPSEC_DEBUG2
4547 /* do exchange to tick time !! */
4548 (void)timeout((void *)key_timehandler, (void *)0, hz);
4549 #endif /* IPSEC_DEBUG2 */
4557 key_randomfill(&value, sizeof(value));
4562 key_randomfill(p, l)
4568 static int warn = 1;
4571 n = (size_t)read_random(p, (u_int)l);
4575 bcopy(&v, (u_int8_t *)p + n,
4576 l - n < sizeof(v) ? l - n : sizeof(v));
4580 printf("WARNING: pseudo-random number generator "
4581 "used for IPsec processing\n");
4588 * map SADB_SATYPE_* to IPPROTO_*.
4589 * if satype == SADB_SATYPE then satype is mapped to ~0.
4591 * 0: invalid satype.
4594 key_satype2proto(u_int8_t satype)
4597 case SADB_SATYPE_UNSPEC:
4598 return IPSEC_PROTO_ANY;
4599 case SADB_SATYPE_AH:
4601 case SADB_SATYPE_ESP:
4603 case SADB_X_SATYPE_IPCOMP:
4604 return IPPROTO_IPCOMP;
4605 case SADB_X_SATYPE_TCPSIGNATURE:
4614 * map IPPROTO_* to SADB_SATYPE_*
4616 * 0: invalid protocol type.
4619 key_proto2satype(u_int16_t proto)
4623 return SADB_SATYPE_AH;
4625 return SADB_SATYPE_ESP;
4626 case IPPROTO_IPCOMP:
4627 return SADB_X_SATYPE_IPCOMP;
4629 return SADB_X_SATYPE_TCPSIGNATURE;
4638 * SADB_GETSPI processing is to receive
4639 * <base, (SA2), src address, dst address, (SPI range)>
4640 * from the IKMPd, to assign a unique spi value, to hang on the INBOUND
4641 * tree with the status of LARVAL, and send
4642 * <base, SA(*), address(SD)>
4645 * IN: mhp: pointer to the pointer to each header.
4646 * OUT: NULL if fail.
4647 * other if success, return pointer to the message to send.
4650 key_getspi(so, m, mhp)
4653 const struct sadb_msghdr *mhp;
4655 struct sadb_address *src0, *dst0;
4656 struct secasindex saidx;
4657 struct secashead *newsah;
4658 struct secasvar *newsav;
4665 IPSEC_ASSERT(so != NULL, ("null socket"));
4666 IPSEC_ASSERT(m != NULL, ("null mbuf"));
4667 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
4668 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
4670 if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
4671 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
4672 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
4674 return key_senderror(so, m, EINVAL);
4676 if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
4677 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
4678 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
4680 return key_senderror(so, m, EINVAL);
4682 if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
4683 mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
4684 reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
4686 mode = IPSEC_MODE_ANY;
4690 src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
4691 dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
4693 /* map satype to proto */
4694 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
4695 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
4697 return key_senderror(so, m, EINVAL);
4701 * Make sure the port numbers are zero.
4702 * In case of NAT-T we will update them later if needed.
4704 switch (((struct sockaddr *)(src0 + 1))->sa_family) {
4706 if (((struct sockaddr *)(src0 + 1))->sa_len !=
4707 sizeof(struct sockaddr_in))
4708 return key_senderror(so, m, EINVAL);
4709 ((struct sockaddr_in *)(src0 + 1))->sin_port = 0;
4712 if (((struct sockaddr *)(src0 + 1))->sa_len !=
4713 sizeof(struct sockaddr_in6))
4714 return key_senderror(so, m, EINVAL);
4715 ((struct sockaddr_in6 *)(src0 + 1))->sin6_port = 0;
4720 switch (((struct sockaddr *)(dst0 + 1))->sa_family) {
4722 if (((struct sockaddr *)(dst0 + 1))->sa_len !=
4723 sizeof(struct sockaddr_in))
4724 return key_senderror(so, m, EINVAL);
4725 ((struct sockaddr_in *)(dst0 + 1))->sin_port = 0;
4728 if (((struct sockaddr *)(dst0 + 1))->sa_len !=
4729 sizeof(struct sockaddr_in6))
4730 return key_senderror(so, m, EINVAL);
4731 ((struct sockaddr_in6 *)(dst0 + 1))->sin6_port = 0;
4737 /* XXX boundary check against sa_len */
4738 KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
4742 * Handle NAT-T info if present.
4743 * We made sure the port numbers are zero above, so we do
4744 * not have to worry in case we do not update them.
4746 if (mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL)
4747 ipseclog((LOG_DEBUG, "%s: NAT-T OAi present\n", __func__));
4748 if (mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL)
4749 ipseclog((LOG_DEBUG, "%s: NAT-T OAr present\n", __func__));
4751 if (mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL &&
4752 mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
4753 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
4754 struct sadb_x_nat_t_type *type;
4755 struct sadb_x_nat_t_port *sport, *dport;
4757 if (mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type) ||
4758 mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
4759 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
4760 ipseclog((LOG_DEBUG, "%s: invalid nat-t message "
4761 "passed.\n", __func__));
4762 return key_senderror(so, m, EINVAL);
4765 sport = (struct sadb_x_nat_t_port *)
4766 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
4767 dport = (struct sadb_x_nat_t_port *)
4768 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
4771 KEY_PORTTOSADDR(&saidx.src, sport->sadb_x_nat_t_port_port);
4773 KEY_PORTTOSADDR(&saidx.dst, dport->sadb_x_nat_t_port_port);
4777 /* SPI allocation */
4778 spi = key_do_getnewspi((struct sadb_spirange *)mhp->ext[SADB_EXT_SPIRANGE],
4781 return key_senderror(so, m, EINVAL);
4783 /* get a SA index */
4784 if ((newsah = key_getsah(&saidx)) == NULL) {
4785 /* create a new SA index */
4786 if ((newsah = key_newsah(&saidx)) == NULL) {
4787 ipseclog((LOG_DEBUG, "%s: No more memory.\n",__func__));
4788 return key_senderror(so, m, ENOBUFS);
4794 newsav = KEY_NEWSAV(m, mhp, newsah, &error);
4795 if (newsav == NULL) {
4796 /* XXX don't free new SA index allocated in above. */
4797 return key_senderror(so, m, error);
4801 newsav->spi = htonl(spi);
4803 /* delete the entry in acqtree */
4804 if (mhp->msg->sadb_msg_seq != 0) {
4806 if ((acq = key_getacqbyseq(mhp->msg->sadb_msg_seq)) != NULL) {
4807 /* reset counter in order to deletion by timehandler. */
4808 acq->created = time_second;
4814 struct mbuf *n, *nn;
4815 struct sadb_sa *m_sa;
4816 struct sadb_msg *newmsg;
4819 /* create new sadb_msg to reply. */
4820 len = PFKEY_ALIGN8(sizeof(struct sadb_msg)) +
4821 PFKEY_ALIGN8(sizeof(struct sadb_sa));
4823 MGETHDR(n, M_DONTWAIT, MT_DATA);
4825 MCLGET(n, M_DONTWAIT);
4826 if ((n->m_flags & M_EXT) == 0) {
4832 return key_senderror(so, m, ENOBUFS);
4838 m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
4839 off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
4841 m_sa = (struct sadb_sa *)(mtod(n, caddr_t) + off);
4842 m_sa->sadb_sa_len = PFKEY_UNIT64(sizeof(struct sadb_sa));
4843 m_sa->sadb_sa_exttype = SADB_EXT_SA;
4844 m_sa->sadb_sa_spi = htonl(spi);
4845 off += PFKEY_ALIGN8(sizeof(struct sadb_sa));
4847 IPSEC_ASSERT(off == len,
4848 ("length inconsistency (off %u len %u)", off, len));
4850 n->m_next = key_gather_mbuf(m, mhp, 0, 2, SADB_EXT_ADDRESS_SRC,
4851 SADB_EXT_ADDRESS_DST);
4854 return key_senderror(so, m, ENOBUFS);
4857 if (n->m_len < sizeof(struct sadb_msg)) {
4858 n = m_pullup(n, sizeof(struct sadb_msg));
4860 return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
4863 n->m_pkthdr.len = 0;
4864 for (nn = n; nn; nn = nn->m_next)
4865 n->m_pkthdr.len += nn->m_len;
4867 newmsg = mtod(n, struct sadb_msg *);
4868 newmsg->sadb_msg_seq = newsav->seq;
4869 newmsg->sadb_msg_errno = 0;
4870 newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
4873 return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
4878 * allocating new SPI
4879 * called by key_getspi().
4885 key_do_getnewspi(spirange, saidx)
4886 struct sadb_spirange *spirange;
4887 struct secasindex *saidx;
4891 int count = V_key_spi_trycnt;
4893 /* set spi range to allocate */
4894 if (spirange != NULL) {
4895 min = spirange->sadb_spirange_min;
4896 max = spirange->sadb_spirange_max;
4898 min = V_key_spi_minval;
4899 max = V_key_spi_maxval;
4901 /* IPCOMP needs 2-byte SPI */
4902 if (saidx->proto == IPPROTO_IPCOMP) {
4909 t = min; min = max; max = t;
4914 if (key_checkspidup(saidx, min) != NULL) {
4915 ipseclog((LOG_DEBUG, "%s: SPI %u exists already.\n",
4920 count--; /* taking one cost. */
4928 /* when requesting to allocate spi ranged */
4930 /* generate pseudo-random SPI value ranged. */
4931 newspi = min + (key_random() % (max - min + 1));
4933 if (key_checkspidup(saidx, newspi) == NULL)
4937 if (count == 0 || newspi == 0) {
4938 ipseclog((LOG_DEBUG, "%s: to allocate spi is failed.\n",
4945 keystat.getspi_count =
4946 (keystat.getspi_count + V_key_spi_trycnt - count) / 2;
4952 * SADB_UPDATE processing
4954 * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
4955 * key(AE), (identity(SD),) (sensitivity)>
4956 * from the ikmpd, and update a secasvar entry whose status is SADB_SASTATE_LARVAL.
4958 * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
4959 * (identity(SD),) (sensitivity)>
4962 * m will always be freed.
4965 key_update(so, m, mhp)
4968 const struct sadb_msghdr *mhp;
4970 struct sadb_sa *sa0;
4971 struct sadb_address *src0, *dst0;
4973 struct sadb_x_nat_t_type *type;
4974 struct sadb_x_nat_t_port *sport, *dport;
4975 struct sadb_address *iaddr, *raddr;
4976 struct sadb_x_nat_t_frag *frag;
4978 struct secasindex saidx;
4979 struct secashead *sah;
4980 struct secasvar *sav;
4986 IPSEC_ASSERT(so != NULL, ("null socket"));
4987 IPSEC_ASSERT(m != NULL, ("null mbuf"));
4988 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
4989 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
4991 /* map satype to proto */
4992 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
4993 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
4995 return key_senderror(so, m, EINVAL);
4998 if (mhp->ext[SADB_EXT_SA] == NULL ||
4999 mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5000 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
5001 (mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
5002 mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
5003 (mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
5004 mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
5005 (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL &&
5006 mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
5007 (mhp->ext[SADB_EXT_LIFETIME_HARD] == NULL &&
5008 mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
5009 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5011 return key_senderror(so, m, EINVAL);
5013 if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
5014 mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5015 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5016 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5018 return key_senderror(so, m, EINVAL);
5020 if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
5021 mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
5022 reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
5024 mode = IPSEC_MODE_ANY;
5027 /* XXX boundary checking for other extensions */
5029 sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5030 src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
5031 dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
5033 /* XXX boundary check against sa_len */
5034 KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
5037 * Make sure the port numbers are zero.
5038 * In case of NAT-T we will update them later if needed.
5040 KEY_PORTTOSADDR(&saidx.src, 0);
5041 KEY_PORTTOSADDR(&saidx.dst, 0);
5045 * Handle NAT-T info if present.
5047 if (mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL &&
5048 mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
5049 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
5051 if (mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type) ||
5052 mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
5053 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
5054 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
5056 return key_senderror(so, m, EINVAL);
5059 type = (struct sadb_x_nat_t_type *)
5060 mhp->ext[SADB_X_EXT_NAT_T_TYPE];
5061 sport = (struct sadb_x_nat_t_port *)
5062 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
5063 dport = (struct sadb_x_nat_t_port *)
5064 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
5069 if (mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL &&
5070 mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL) {
5071 if (mhp->extlen[SADB_X_EXT_NAT_T_OAI] < sizeof(*iaddr) ||
5072 mhp->extlen[SADB_X_EXT_NAT_T_OAR] < sizeof(*raddr)) {
5073 ipseclog((LOG_DEBUG, "%s: invalid message\n",
5075 return key_senderror(so, m, EINVAL);
5077 iaddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAI];
5078 raddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAR];
5079 ipseclog((LOG_DEBUG, "%s: NAT-T OAi/r present\n", __func__));
5081 iaddr = raddr = NULL;
5083 if (mhp->ext[SADB_X_EXT_NAT_T_FRAG] != NULL) {
5084 if (mhp->extlen[SADB_X_EXT_NAT_T_FRAG] < sizeof(*frag)) {
5085 ipseclog((LOG_DEBUG, "%s: invalid message\n",
5087 return key_senderror(so, m, EINVAL);
5089 frag = (struct sadb_x_nat_t_frag *)
5090 mhp->ext[SADB_X_EXT_NAT_T_FRAG];
5096 /* get a SA header */
5097 if ((sah = key_getsah(&saidx)) == NULL) {
5098 ipseclog((LOG_DEBUG, "%s: no SA index found.\n", __func__));
5099 return key_senderror(so, m, ENOENT);
5102 /* set spidx if there */
5104 error = key_setident(sah, m, mhp);
5106 return key_senderror(so, m, error);
5108 /* find a SA with sequence number. */
5109 #ifdef IPSEC_DOSEQCHECK
5110 if (mhp->msg->sadb_msg_seq != 0
5111 && (sav = key_getsavbyseq(sah, mhp->msg->sadb_msg_seq)) == NULL) {
5112 ipseclog((LOG_DEBUG, "%s: no larval SA with sequence %u "
5113 "exists.\n", __func__, mhp->msg->sadb_msg_seq));
5114 return key_senderror(so, m, ENOENT);
5118 sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
5121 ipseclog((LOG_DEBUG, "%s: no such a SA found (spi:%u)\n",
5122 __func__, (u_int32_t)ntohl(sa0->sadb_sa_spi)));
5123 return key_senderror(so, m, EINVAL);
5127 /* validity check */
5128 if (sav->sah->saidx.proto != proto) {
5129 ipseclog((LOG_DEBUG, "%s: protocol mismatched "
5130 "(DB=%u param=%u)\n", __func__,
5131 sav->sah->saidx.proto, proto));
5132 return key_senderror(so, m, EINVAL);
5134 #ifdef IPSEC_DOSEQCHECK
5135 if (sav->spi != sa0->sadb_sa_spi) {
5136 ipseclog((LOG_DEBUG, "%s: SPI mismatched (DB:%u param:%u)\n",
5138 (u_int32_t)ntohl(sav->spi),
5139 (u_int32_t)ntohl(sa0->sadb_sa_spi)));
5140 return key_senderror(so, m, EINVAL);
5143 if (sav->pid != mhp->msg->sadb_msg_pid) {
5144 ipseclog((LOG_DEBUG, "%s: pid mismatched (DB:%u param:%u)\n",
5145 __func__, sav->pid, mhp->msg->sadb_msg_pid));
5146 return key_senderror(so, m, EINVAL);
5149 /* copy sav values */
5150 error = key_setsaval(sav, m, mhp);
5153 return key_senderror(so, m, error);
5158 * Handle more NAT-T info if present,
5159 * now that we have a sav to fill.
5162 sav->natt_type = type->sadb_x_nat_t_type_type;
5165 KEY_PORTTOSADDR(&sav->sah->saidx.src,
5166 sport->sadb_x_nat_t_port_port);
5168 KEY_PORTTOSADDR(&sav->sah->saidx.dst,
5169 dport->sadb_x_nat_t_port_port);
5173 * In case SADB_X_EXT_NAT_T_FRAG was not given, leave it at 0.
5174 * We should actually check for a minimum MTU here, if we
5175 * want to support it in ip_output.
5178 sav->natt_esp_frag_len = frag->sadb_x_nat_t_frag_fraglen;
5182 /* check SA values to be mature. */
5183 if ((mhp->msg->sadb_msg_errno = key_mature(sav)) != 0) {
5185 return key_senderror(so, m, 0);
5191 /* set msg buf from mhp */
5192 n = key_getmsgbuf_x1(m, mhp);
5194 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
5195 return key_senderror(so, m, ENOBUFS);
5199 return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5204 * search SAD with sequence for a SA which state is SADB_SASTATE_LARVAL.
5205 * only called by key_update().
5208 * others : found, pointer to a SA.
5210 #ifdef IPSEC_DOSEQCHECK
5211 static struct secasvar *
5212 key_getsavbyseq(sah, seq)
5213 struct secashead *sah;
5216 struct secasvar *sav;
5219 state = SADB_SASTATE_LARVAL;
5221 /* search SAD with sequence number ? */
5222 LIST_FOREACH(sav, &sah->savtree[state], chain) {
5224 KEY_CHKSASTATE(state, sav->state, __func__);
5226 if (sav->seq == seq) {
5228 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
5229 printf("DP %s cause refcnt++:%d SA:%p\n",
5230 __func__, sav->refcnt, sav));
5240 * SADB_ADD processing
5241 * add an entry to SA database, when received
5242 * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
5243 * key(AE), (identity(SD),) (sensitivity)>
5246 * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
5247 * (identity(SD),) (sensitivity)>
5250 * IGNORE identity and sensitivity messages.
5252 * m will always be freed.
5258 const struct sadb_msghdr *mhp;
5260 struct sadb_sa *sa0;
5261 struct sadb_address *src0, *dst0;
5263 struct sadb_x_nat_t_type *type;
5264 struct sadb_address *iaddr, *raddr;
5265 struct sadb_x_nat_t_frag *frag;
5267 struct secasindex saidx;
5268 struct secashead *newsah;
5269 struct secasvar *newsav;
5275 IPSEC_ASSERT(so != NULL, ("null socket"));
5276 IPSEC_ASSERT(m != NULL, ("null mbuf"));
5277 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
5278 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
5280 /* map satype to proto */
5281 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
5282 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
5284 return key_senderror(so, m, EINVAL);
5287 if (mhp->ext[SADB_EXT_SA] == NULL ||
5288 mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5289 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
5290 (mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
5291 mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
5292 (mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
5293 mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
5294 (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL &&
5295 mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
5296 (mhp->ext[SADB_EXT_LIFETIME_HARD] == NULL &&
5297 mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
5298 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5300 return key_senderror(so, m, EINVAL);
5302 if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
5303 mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5304 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5306 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5308 return key_senderror(so, m, EINVAL);
5310 if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
5311 mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
5312 reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
5314 mode = IPSEC_MODE_ANY;
5318 sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5319 src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
5320 dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
5322 /* XXX boundary check against sa_len */
5323 KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
5326 * Make sure the port numbers are zero.
5327 * In case of NAT-T we will update them later if needed.
5329 KEY_PORTTOSADDR(&saidx.src, 0);
5330 KEY_PORTTOSADDR(&saidx.dst, 0);
5334 * Handle NAT-T info if present.
5336 if (mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL &&
5337 mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
5338 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
5339 struct sadb_x_nat_t_port *sport, *dport;
5341 if (mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type) ||
5342 mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
5343 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
5344 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
5346 return key_senderror(so, m, EINVAL);
5349 type = (struct sadb_x_nat_t_type *)
5350 mhp->ext[SADB_X_EXT_NAT_T_TYPE];
5351 sport = (struct sadb_x_nat_t_port *)
5352 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
5353 dport = (struct sadb_x_nat_t_port *)
5354 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
5357 KEY_PORTTOSADDR(&saidx.src,
5358 sport->sadb_x_nat_t_port_port);
5360 KEY_PORTTOSADDR(&saidx.dst,
5361 dport->sadb_x_nat_t_port_port);
5365 if (mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL &&
5366 mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL) {
5367 if (mhp->extlen[SADB_X_EXT_NAT_T_OAI] < sizeof(*iaddr) ||
5368 mhp->extlen[SADB_X_EXT_NAT_T_OAR] < sizeof(*raddr)) {
5369 ipseclog((LOG_DEBUG, "%s: invalid message\n",
5371 return key_senderror(so, m, EINVAL);
5373 iaddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAI];
5374 raddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAR];
5375 ipseclog((LOG_DEBUG, "%s: NAT-T OAi/r present\n", __func__));
5377 iaddr = raddr = NULL;
5379 if (mhp->ext[SADB_X_EXT_NAT_T_FRAG] != NULL) {
5380 if (mhp->extlen[SADB_X_EXT_NAT_T_FRAG] < sizeof(*frag)) {
5381 ipseclog((LOG_DEBUG, "%s: invalid message\n",
5383 return key_senderror(so, m, EINVAL);
5385 frag = (struct sadb_x_nat_t_frag *)
5386 mhp->ext[SADB_X_EXT_NAT_T_FRAG];
5392 /* get a SA header */
5393 if ((newsah = key_getsah(&saidx)) == NULL) {
5394 /* create a new SA header */
5395 if ((newsah = key_newsah(&saidx)) == NULL) {
5396 ipseclog((LOG_DEBUG, "%s: No more memory.\n",__func__));
5397 return key_senderror(so, m, ENOBUFS);
5401 /* set spidx if there */
5403 error = key_setident(newsah, m, mhp);
5405 return key_senderror(so, m, error);
5408 /* create new SA entry. */
5409 /* We can create new SA only if SPI is differenct. */
5411 newsav = key_getsavbyspi(newsah, sa0->sadb_sa_spi);
5413 if (newsav != NULL) {
5414 ipseclog((LOG_DEBUG, "%s: SA already exists.\n", __func__));
5415 return key_senderror(so, m, EEXIST);
5417 newsav = KEY_NEWSAV(m, mhp, newsah, &error);
5418 if (newsav == NULL) {
5419 return key_senderror(so, m, error);
5424 * Handle more NAT-T info if present,
5425 * now that we have a sav to fill.
5428 newsav->natt_type = type->sadb_x_nat_t_type_type;
5432 * In case SADB_X_EXT_NAT_T_FRAG was not given, leave it at 0.
5433 * We should actually check for a minimum MTU here, if we
5434 * want to support it in ip_output.
5437 newsav->natt_esp_frag_len = frag->sadb_x_nat_t_frag_fraglen;
5441 /* check SA values to be mature. */
5442 if ((error = key_mature(newsav)) != 0) {
5443 KEY_FREESAV(&newsav);
5444 return key_senderror(so, m, error);
5448 * don't call key_freesav() here, as we would like to keep the SA
5449 * in the database on success.
5455 /* set msg buf from mhp */
5456 n = key_getmsgbuf_x1(m, mhp);
5458 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
5459 return key_senderror(so, m, ENOBUFS);
5463 return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5469 key_setident(sah, m, mhp)
5470 struct secashead *sah;
5472 const struct sadb_msghdr *mhp;
5474 const struct sadb_ident *idsrc, *iddst;
5475 int idsrclen, iddstlen;
5477 IPSEC_ASSERT(sah != NULL, ("null secashead"));
5478 IPSEC_ASSERT(m != NULL, ("null mbuf"));
5479 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
5480 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
5482 /* don't make buffer if not there */
5483 if (mhp->ext[SADB_EXT_IDENTITY_SRC] == NULL &&
5484 mhp->ext[SADB_EXT_IDENTITY_DST] == NULL) {
5490 if (mhp->ext[SADB_EXT_IDENTITY_SRC] == NULL ||
5491 mhp->ext[SADB_EXT_IDENTITY_DST] == NULL) {
5492 ipseclog((LOG_DEBUG, "%s: invalid identity.\n", __func__));
5496 idsrc = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_SRC];
5497 iddst = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_DST];
5498 idsrclen = mhp->extlen[SADB_EXT_IDENTITY_SRC];
5499 iddstlen = mhp->extlen[SADB_EXT_IDENTITY_DST];
5501 /* validity check */
5502 if (idsrc->sadb_ident_type != iddst->sadb_ident_type) {
5503 ipseclog((LOG_DEBUG, "%s: ident type mismatch.\n", __func__));
5507 switch (idsrc->sadb_ident_type) {
5508 case SADB_IDENTTYPE_PREFIX:
5509 case SADB_IDENTTYPE_FQDN:
5510 case SADB_IDENTTYPE_USERFQDN:
5512 /* XXX do nothing */
5518 /* make structure */
5519 sah->idents = malloc(sizeof(struct secident), M_IPSEC_MISC, M_NOWAIT);
5520 if (sah->idents == NULL) {
5521 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
5524 sah->identd = malloc(sizeof(struct secident), M_IPSEC_MISC, M_NOWAIT);
5525 if (sah->identd == NULL) {
5526 free(sah->idents, M_IPSEC_MISC);
5528 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
5531 sah->idents->type = idsrc->sadb_ident_type;
5532 sah->idents->id = idsrc->sadb_ident_id;
5534 sah->identd->type = iddst->sadb_ident_type;
5535 sah->identd->id = iddst->sadb_ident_id;
5541 * m will not be freed on return.
5542 * it is caller's responsibility to free the result.
5544 static struct mbuf *
5545 key_getmsgbuf_x1(m, mhp)
5547 const struct sadb_msghdr *mhp;
5551 IPSEC_ASSERT(m != NULL, ("null mbuf"));
5552 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
5553 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
5555 /* create new sadb_msg to reply. */
5556 n = key_gather_mbuf(m, mhp, 1, 9, SADB_EXT_RESERVED,
5557 SADB_EXT_SA, SADB_X_EXT_SA2,
5558 SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST,
5559 SADB_EXT_LIFETIME_HARD, SADB_EXT_LIFETIME_SOFT,
5560 SADB_EXT_IDENTITY_SRC, SADB_EXT_IDENTITY_DST);
5564 if (n->m_len < sizeof(struct sadb_msg)) {
5565 n = m_pullup(n, sizeof(struct sadb_msg));
5569 mtod(n, struct sadb_msg *)->sadb_msg_errno = 0;
5570 mtod(n, struct sadb_msg *)->sadb_msg_len =
5571 PFKEY_UNIT64(n->m_pkthdr.len);
5576 static int key_delete_all __P((struct socket *, struct mbuf *,
5577 const struct sadb_msghdr *, u_int16_t));
5580 * SADB_DELETE processing
5582 * <base, SA(*), address(SD)>
5583 * from the ikmpd, and set SADB_SASTATE_DEAD,
5585 * <base, SA(*), address(SD)>
5588 * m will always be freed.
5591 key_delete(so, m, mhp)
5594 const struct sadb_msghdr *mhp;
5596 struct sadb_sa *sa0;
5597 struct sadb_address *src0, *dst0;
5598 struct secasindex saidx;
5599 struct secashead *sah;
5600 struct secasvar *sav = NULL;
5603 IPSEC_ASSERT(so != NULL, ("null socket"));
5604 IPSEC_ASSERT(m != NULL, ("null mbuf"));
5605 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
5606 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
5608 /* map satype to proto */
5609 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
5610 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
5612 return key_senderror(so, m, EINVAL);
5615 if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5616 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
5617 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5619 return key_senderror(so, m, EINVAL);
5622 if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5623 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5624 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5626 return key_senderror(so, m, EINVAL);
5629 if (mhp->ext[SADB_EXT_SA] == NULL) {
5631 * Caller wants us to delete all non-LARVAL SAs
5632 * that match the src/dst. This is used during
5633 * IKE INITIAL-CONTACT.
5635 ipseclog((LOG_DEBUG, "%s: doing delete all.\n", __func__));
5636 return key_delete_all(so, m, mhp, proto);
5637 } else if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa)) {
5638 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5640 return key_senderror(so, m, EINVAL);
5643 sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5644 src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
5645 dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
5647 /* XXX boundary check against sa_len */
5648 KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
5651 * Make sure the port numbers are zero.
5652 * In case of NAT-T we will update them later if needed.
5654 KEY_PORTTOSADDR(&saidx.src, 0);
5655 KEY_PORTTOSADDR(&saidx.dst, 0);
5659 * Handle NAT-T info if present.
5661 if (mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
5662 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
5663 struct sadb_x_nat_t_port *sport, *dport;
5665 if (mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
5666 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
5667 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
5669 return key_senderror(so, m, EINVAL);
5672 sport = (struct sadb_x_nat_t_port *)
5673 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
5674 dport = (struct sadb_x_nat_t_port *)
5675 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
5678 KEY_PORTTOSADDR(&saidx.src,
5679 sport->sadb_x_nat_t_port_port);
5681 KEY_PORTTOSADDR(&saidx.dst,
5682 dport->sadb_x_nat_t_port_port);
5686 /* get a SA header */
5688 LIST_FOREACH(sah, &V_sahtree, chain) {
5689 if (sah->state == SADB_SASTATE_DEAD)
5691 if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
5694 /* get a SA with SPI. */
5695 sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
5701 ipseclog((LOG_DEBUG, "%s: no SA found.\n", __func__));
5702 return key_senderror(so, m, ENOENT);
5705 key_sa_chgstate(sav, SADB_SASTATE_DEAD);
5711 struct sadb_msg *newmsg;
5713 /* create new sadb_msg to reply. */
5714 /* XXX-BZ NAT-T extensions? */
5715 n = key_gather_mbuf(m, mhp, 1, 4, SADB_EXT_RESERVED,
5716 SADB_EXT_SA, SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
5718 return key_senderror(so, m, ENOBUFS);
5720 if (n->m_len < sizeof(struct sadb_msg)) {
5721 n = m_pullup(n, sizeof(struct sadb_msg));
5723 return key_senderror(so, m, ENOBUFS);
5725 newmsg = mtod(n, struct sadb_msg *);
5726 newmsg->sadb_msg_errno = 0;
5727 newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
5730 return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5735 * delete all SAs for src/dst. Called from key_delete().
5738 key_delete_all(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp,
5741 struct sadb_address *src0, *dst0;
5742 struct secasindex saidx;
5743 struct secashead *sah;
5744 struct secasvar *sav, *nextsav;
5745 u_int stateidx, state;
5747 src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
5748 dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
5750 /* XXX boundary check against sa_len */
5751 KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
5754 * Make sure the port numbers are zero.
5755 * In case of NAT-T we will update them later if needed.
5757 KEY_PORTTOSADDR(&saidx.src, 0);
5758 KEY_PORTTOSADDR(&saidx.dst, 0);
5762 * Handle NAT-T info if present.
5765 if (mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
5766 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
5767 struct sadb_x_nat_t_port *sport, *dport;
5769 if (mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
5770 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
5771 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
5773 return key_senderror(so, m, EINVAL);
5776 sport = (struct sadb_x_nat_t_port *)
5777 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
5778 dport = (struct sadb_x_nat_t_port *)
5779 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
5782 KEY_PORTTOSADDR(&saidx.src,
5783 sport->sadb_x_nat_t_port_port);
5785 KEY_PORTTOSADDR(&saidx.dst,
5786 dport->sadb_x_nat_t_port_port);
5791 LIST_FOREACH(sah, &V_sahtree, chain) {
5792 if (sah->state == SADB_SASTATE_DEAD)
5794 if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
5797 /* Delete all non-LARVAL SAs. */
5799 stateidx < _ARRAYLEN(saorder_state_alive);
5801 state = saorder_state_alive[stateidx];
5802 if (state == SADB_SASTATE_LARVAL)
5804 for (sav = LIST_FIRST(&sah->savtree[state]);
5805 sav != NULL; sav = nextsav) {
5806 nextsav = LIST_NEXT(sav, chain);
5808 if (sav->state != state) {
5809 ipseclog((LOG_DEBUG, "%s: invalid "
5810 "sav->state (queue %d SA %d)\n",
5811 __func__, state, sav->state));
5815 key_sa_chgstate(sav, SADB_SASTATE_DEAD);
5823 struct sadb_msg *newmsg;
5825 /* create new sadb_msg to reply. */
5826 /* XXX-BZ NAT-T extensions? */
5827 n = key_gather_mbuf(m, mhp, 1, 3, SADB_EXT_RESERVED,
5828 SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
5830 return key_senderror(so, m, ENOBUFS);
5832 if (n->m_len < sizeof(struct sadb_msg)) {
5833 n = m_pullup(n, sizeof(struct sadb_msg));
5835 return key_senderror(so, m, ENOBUFS);
5837 newmsg = mtod(n, struct sadb_msg *);
5838 newmsg->sadb_msg_errno = 0;
5839 newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
5842 return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5847 * SADB_GET processing
5849 * <base, SA(*), address(SD)>
5850 * from the ikmpd, and get a SP and a SA to respond,
5852 * <base, SA, (lifetime(HSC),) address(SD), (address(P),) key(AE),
5853 * (identity(SD),) (sensitivity)>
5856 * m will always be freed.
5862 const struct sadb_msghdr *mhp;
5864 struct sadb_sa *sa0;
5865 struct sadb_address *src0, *dst0;
5866 struct secasindex saidx;
5867 struct secashead *sah;
5868 struct secasvar *sav = NULL;
5871 IPSEC_ASSERT(so != NULL, ("null socket"));
5872 IPSEC_ASSERT(m != NULL, ("null mbuf"));
5873 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
5874 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
5876 /* map satype to proto */
5877 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
5878 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
5880 return key_senderror(so, m, EINVAL);
5883 if (mhp->ext[SADB_EXT_SA] == NULL ||
5884 mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5885 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
5886 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5888 return key_senderror(so, m, EINVAL);
5890 if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
5891 mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5892 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5893 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5895 return key_senderror(so, m, EINVAL);
5898 sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5899 src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
5900 dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
5902 /* XXX boundary check against sa_len */
5903 KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
5906 * Make sure the port numbers are zero.
5907 * In case of NAT-T we will update them later if needed.
5909 KEY_PORTTOSADDR(&saidx.src, 0);
5910 KEY_PORTTOSADDR(&saidx.dst, 0);
5914 * Handle NAT-T info if present.
5917 if (mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
5918 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
5919 struct sadb_x_nat_t_port *sport, *dport;
5921 if (mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
5922 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
5923 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
5925 return key_senderror(so, m, EINVAL);
5928 sport = (struct sadb_x_nat_t_port *)
5929 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
5930 dport = (struct sadb_x_nat_t_port *)
5931 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
5934 KEY_PORTTOSADDR(&saidx.src,
5935 sport->sadb_x_nat_t_port_port);
5937 KEY_PORTTOSADDR(&saidx.dst,
5938 dport->sadb_x_nat_t_port_port);
5942 /* get a SA header */
5944 LIST_FOREACH(sah, &V_sahtree, chain) {
5945 if (sah->state == SADB_SASTATE_DEAD)
5947 if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
5950 /* get a SA with SPI. */
5951 sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
5957 ipseclog((LOG_DEBUG, "%s: no SA found.\n", __func__));
5958 return key_senderror(so, m, ENOENT);
5965 /* map proto to satype */
5966 if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
5967 ipseclog((LOG_DEBUG, "%s: there was invalid proto in SAD.\n",
5969 return key_senderror(so, m, EINVAL);
5972 /* create new sadb_msg to reply. */
5973 n = key_setdumpsa(sav, SADB_GET, satype, mhp->msg->sadb_msg_seq,
5974 mhp->msg->sadb_msg_pid);
5976 return key_senderror(so, m, ENOBUFS);
5979 return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
5983 /* XXX make it sysctl-configurable? */
5985 key_getcomb_setlifetime(comb)
5986 struct sadb_comb *comb;
5989 comb->sadb_comb_soft_allocations = 1;
5990 comb->sadb_comb_hard_allocations = 1;
5991 comb->sadb_comb_soft_bytes = 0;
5992 comb->sadb_comb_hard_bytes = 0;
5993 comb->sadb_comb_hard_addtime = 86400; /* 1 day */
5994 comb->sadb_comb_soft_addtime = comb->sadb_comb_soft_addtime * 80 / 100;
5995 comb->sadb_comb_soft_usetime = 28800; /* 8 hours */
5996 comb->sadb_comb_hard_usetime = comb->sadb_comb_hard_usetime * 80 / 100;
6000 * XXX reorder combinations by preference
6001 * XXX no idea if the user wants ESP authentication or not
6003 static struct mbuf *
6006 struct sadb_comb *comb;
6007 struct enc_xform *algo;
6008 struct mbuf *result = NULL, *m, *n;
6012 const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
6015 for (i = 1; i <= SADB_EALG_MAX; i++) {
6016 algo = esp_algorithm_lookup(i);
6020 /* discard algorithms with key size smaller than system min */
6021 if (_BITS(algo->maxkey) < V_ipsec_esp_keymin)
6023 if (_BITS(algo->minkey) < V_ipsec_esp_keymin)
6024 encmin = V_ipsec_esp_keymin;
6026 encmin = _BITS(algo->minkey);
6028 if (V_ipsec_esp_auth)
6029 m = key_getcomb_ah();
6031 IPSEC_ASSERT(l <= MLEN,
6032 ("l=%u > MLEN=%lu", l, (u_long) MLEN));
6033 MGET(m, M_DONTWAIT, MT_DATA);
6038 bzero(mtod(m, caddr_t), m->m_len);
6045 for (n = m; n; n = n->m_next)
6047 IPSEC_ASSERT((totlen % l) == 0, ("totlen=%u, l=%u", totlen, l));
6049 for (off = 0; off < totlen; off += l) {
6050 n = m_pulldown(m, off, l, &o);
6052 /* m is already freed */
6055 comb = (struct sadb_comb *)(mtod(n, caddr_t) + o);
6056 bzero(comb, sizeof(*comb));
6057 key_getcomb_setlifetime(comb);
6058 comb->sadb_comb_encrypt = i;
6059 comb->sadb_comb_encrypt_minbits = encmin;
6060 comb->sadb_comb_encrypt_maxbits = _BITS(algo->maxkey);
6079 const struct auth_hash *ah,
6085 *min = *max = ah->keysize;
6086 if (ah->keysize == 0) {
6088 * Transform takes arbitrary key size but algorithm
6089 * key size is restricted. Enforce this here.
6092 case SADB_X_AALG_MD5: *min = *max = 16; break;
6093 case SADB_X_AALG_SHA: *min = *max = 20; break;
6094 case SADB_X_AALG_NULL: *min = 1; *max = 256; break;
6095 case SADB_X_AALG_SHA2_256: *min = *max = 32; break;
6096 case SADB_X_AALG_SHA2_384: *min = *max = 48; break;
6097 case SADB_X_AALG_SHA2_512: *min = *max = 64; break;
6099 DPRINTF(("%s: unknown AH algorithm %u\n",
6107 * XXX reorder combinations by preference
6109 static struct mbuf *
6112 struct sadb_comb *comb;
6113 struct auth_hash *algo;
6115 u_int16_t minkeysize, maxkeysize;
6117 const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
6120 for (i = 1; i <= SADB_AALG_MAX; i++) {
6122 /* we prefer HMAC algorithms, not old algorithms */
6123 if (i != SADB_AALG_SHA1HMAC &&
6124 i != SADB_AALG_MD5HMAC &&
6125 i != SADB_X_AALG_SHA2_256 &&
6126 i != SADB_X_AALG_SHA2_384 &&
6127 i != SADB_X_AALG_SHA2_512)
6130 algo = ah_algorithm_lookup(i);
6133 key_getsizes_ah(algo, i, &minkeysize, &maxkeysize);
6134 /* discard algorithms with key size smaller than system min */
6135 if (_BITS(minkeysize) < V_ipsec_ah_keymin)
6139 IPSEC_ASSERT(l <= MLEN,
6140 ("l=%u > MLEN=%lu", l, (u_long) MLEN));
6141 MGET(m, M_DONTWAIT, MT_DATA);
6148 M_PREPEND(m, l, M_DONTWAIT);
6152 comb = mtod(m, struct sadb_comb *);
6153 bzero(comb, sizeof(*comb));
6154 key_getcomb_setlifetime(comb);
6155 comb->sadb_comb_auth = i;
6156 comb->sadb_comb_auth_minbits = _BITS(minkeysize);
6157 comb->sadb_comb_auth_maxbits = _BITS(maxkeysize);
6164 * not really an official behavior. discussed in pf_key@inner.net in Sep2000.
6165 * XXX reorder combinations by preference
6167 static struct mbuf *
6168 key_getcomb_ipcomp()
6170 struct sadb_comb *comb;
6171 struct comp_algo *algo;
6174 const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
6177 for (i = 1; i <= SADB_X_CALG_MAX; i++) {
6178 algo = ipcomp_algorithm_lookup(i);
6183 IPSEC_ASSERT(l <= MLEN,
6184 ("l=%u > MLEN=%lu", l, (u_long) MLEN));
6185 MGET(m, M_DONTWAIT, MT_DATA);
6192 M_PREPEND(m, l, M_DONTWAIT);
6196 comb = mtod(m, struct sadb_comb *);
6197 bzero(comb, sizeof(*comb));
6198 key_getcomb_setlifetime(comb);
6199 comb->sadb_comb_encrypt = i;
6200 /* what should we set into sadb_comb_*_{min,max}bits? */
6207 * XXX no way to pass mode (transport/tunnel) to userland
6208 * XXX replay checking?
6209 * XXX sysctl interface to ipsec_{ah,esp}_keymin
6211 static struct mbuf *
6213 const struct secasindex *saidx;
6215 struct sadb_prop *prop;
6217 const int l = PFKEY_ALIGN8(sizeof(struct sadb_prop));
6220 switch (saidx->proto) {
6222 m = key_getcomb_esp();
6225 m = key_getcomb_ah();
6227 case IPPROTO_IPCOMP:
6228 m = key_getcomb_ipcomp();
6236 M_PREPEND(m, l, M_DONTWAIT);
6241 for (n = m; n; n = n->m_next)
6244 prop = mtod(m, struct sadb_prop *);
6245 bzero(prop, sizeof(*prop));
6246 prop->sadb_prop_len = PFKEY_UNIT64(totlen);
6247 prop->sadb_prop_exttype = SADB_EXT_PROPOSAL;
6248 prop->sadb_prop_replay = 32; /* XXX */
6254 * SADB_ACQUIRE processing called by key_checkrequest() and key_acquire2().
6256 * <base, SA, address(SD), (address(P)), x_policy,
6257 * (identity(SD),) (sensitivity,) proposal>
6258 * to KMD, and expect to receive
6259 * <base> with SADB_ACQUIRE if error occured,
6261 * <base, src address, dst address, (SPI range)> with SADB_GETSPI
6262 * from KMD by PF_KEY.
6264 * XXX x_policy is outside of RFC2367 (KAME extension).
6265 * XXX sensitivity is not supported.
6266 * XXX for ipcomp, RFC2367 does not define how to fill in proposal.
6267 * see comment for key_getcomb_ipcomp().
6271 * others: error number
6274 key_acquire(const struct secasindex *saidx, struct secpolicy *sp)
6276 struct mbuf *result = NULL, *m;
6277 struct secacq *newacq;
6282 IPSEC_ASSERT(saidx != NULL, ("null saidx"));
6283 satype = key_proto2satype(saidx->proto);
6284 IPSEC_ASSERT(satype != 0, ("null satype, protocol %u", saidx->proto));
6287 * We never do anything about acquirng SA. There is anather
6288 * solution that kernel blocks to send SADB_ACQUIRE message until
6289 * getting something message from IKEd. In later case, to be
6290 * managed with ACQUIRING list.
6292 /* Get an entry to check whether sending message or not. */
6293 if ((newacq = key_getacq(saidx)) != NULL) {
6294 if (V_key_blockacq_count < newacq->count) {
6295 /* reset counter and do send message. */
6298 /* increment counter and do nothing. */
6303 /* make new entry for blocking to send SADB_ACQUIRE. */
6304 if ((newacq = key_newacq(saidx)) == NULL)
6310 m = key_setsadbmsg(SADB_ACQUIRE, 0, satype, seq, 0, 0);
6318 * No SADB_X_EXT_NAT_T_* here: we do not know
6319 * anything related to NAT-T at this time.
6322 /* set sadb_address for saidx's. */
6323 m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
6324 &saidx->src.sa, FULLMASK, IPSEC_ULPROTO_ANY);
6331 m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
6332 &saidx->dst.sa, FULLMASK, IPSEC_ULPROTO_ANY);
6339 /* XXX proxy address (optional) */
6341 /* set sadb_x_policy */
6343 m = key_setsadbxpolicy(sp->policy, sp->spidx.dir, sp->id);
6351 /* XXX identity (optional) */
6353 if (idexttype && fqdn) {
6354 /* create identity extension (FQDN) */
6355 struct sadb_ident *id;
6358 fqdnlen = strlen(fqdn) + 1; /* +1 for terminating-NUL */
6359 id = (struct sadb_ident *)p;
6360 bzero(id, sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
6361 id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
6362 id->sadb_ident_exttype = idexttype;
6363 id->sadb_ident_type = SADB_IDENTTYPE_FQDN;
6364 bcopy(fqdn, id + 1, fqdnlen);
6365 p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(fqdnlen);
6369 /* create identity extension (USERFQDN) */
6370 struct sadb_ident *id;
6374 /* +1 for terminating-NUL */
6375 userfqdnlen = strlen(userfqdn) + 1;
6378 id = (struct sadb_ident *)p;
6379 bzero(id, sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
6380 id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
6381 id->sadb_ident_exttype = idexttype;
6382 id->sadb_ident_type = SADB_IDENTTYPE_USERFQDN;
6383 /* XXX is it correct? */
6384 if (curproc && curproc->p_cred)
6385 id->sadb_ident_id = curproc->p_cred->p_ruid;
6386 if (userfqdn && userfqdnlen)
6387 bcopy(userfqdn, id + 1, userfqdnlen);
6388 p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(userfqdnlen);
6392 /* XXX sensitivity (optional) */
6394 /* create proposal/combination extension */
6395 m = key_getprop(saidx);
6398 * spec conformant: always attach proposal/combination extension,
6399 * the problem is that we have no way to attach it for ipcomp,
6400 * due to the way sadb_comb is declared in RFC2367.
6409 * outside of spec; make proposal/combination extension optional.
6415 if ((result->m_flags & M_PKTHDR) == 0) {
6420 if (result->m_len < sizeof(struct sadb_msg)) {
6421 result = m_pullup(result, sizeof(struct sadb_msg));
6422 if (result == NULL) {
6428 result->m_pkthdr.len = 0;
6429 for (m = result; m; m = m->m_next)
6430 result->m_pkthdr.len += m->m_len;
6432 mtod(result, struct sadb_msg *)->sadb_msg_len =
6433 PFKEY_UNIT64(result->m_pkthdr.len);
6435 return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
6443 static struct secacq *
6444 key_newacq(const struct secasindex *saidx)
6446 struct secacq *newacq;
6449 newacq = malloc(sizeof(struct secacq), M_IPSEC_SAQ, M_NOWAIT|M_ZERO);
6450 if (newacq == NULL) {
6451 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
6456 bcopy(saidx, &newacq->saidx, sizeof(newacq->saidx));
6457 newacq->seq = (V_acq_seq == ~0 ? 1 : ++V_acq_seq);
6458 newacq->created = time_second;
6461 /* add to acqtree */
6463 LIST_INSERT_HEAD(&V_acqtree, newacq, chain);
6469 static struct secacq *
6470 key_getacq(const struct secasindex *saidx)
6475 LIST_FOREACH(acq, &V_acqtree, chain) {
6476 if (key_cmpsaidx(saidx, &acq->saidx, CMP_EXACTLY))
6484 static struct secacq *
6485 key_getacqbyseq(seq)
6491 LIST_FOREACH(acq, &V_acqtree, chain) {
6492 if (acq->seq == seq)
6500 static struct secspacq *
6502 struct secpolicyindex *spidx;
6504 struct secspacq *acq;
6507 acq = malloc(sizeof(struct secspacq), M_IPSEC_SAQ, M_NOWAIT|M_ZERO);
6509 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
6514 bcopy(spidx, &acq->spidx, sizeof(acq->spidx));
6515 acq->created = time_second;
6518 /* add to spacqtree */
6520 LIST_INSERT_HEAD(&V_spacqtree, acq, chain);
6526 static struct secspacq *
6528 struct secpolicyindex *spidx;
6530 struct secspacq *acq;
6533 LIST_FOREACH(acq, &V_spacqtree, chain) {
6534 if (key_cmpspidx_exactly(spidx, &acq->spidx)) {
6535 /* NB: return holding spacq_lock */
6545 * SADB_ACQUIRE processing,
6546 * in first situation, is receiving
6548 * from the ikmpd, and clear sequence of its secasvar entry.
6550 * In second situation, is receiving
6551 * <base, address(SD), (address(P),) (identity(SD),) (sensitivity,) proposal>
6552 * from a user land process, and return
6553 * <base, address(SD), (address(P),) (identity(SD),) (sensitivity,) proposal>
6556 * m will always be freed.
6559 key_acquire2(so, m, mhp)
6562 const struct sadb_msghdr *mhp;
6564 const struct sadb_address *src0, *dst0;
6565 struct secasindex saidx;
6566 struct secashead *sah;
6570 IPSEC_ASSERT(so != NULL, ("null socket"));
6571 IPSEC_ASSERT(m != NULL, ("null mbuf"));
6572 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
6573 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
6576 * Error message from KMd.
6577 * We assume that if error was occured in IKEd, the length of PFKEY
6578 * message is equal to the size of sadb_msg structure.
6579 * We do not raise error even if error occured in this function.
6581 if (mhp->msg->sadb_msg_len == PFKEY_UNIT64(sizeof(struct sadb_msg))) {
6584 /* check sequence number */
6585 if (mhp->msg->sadb_msg_seq == 0) {
6586 ipseclog((LOG_DEBUG, "%s: must specify sequence "
6587 "number.\n", __func__));
6592 if ((acq = key_getacqbyseq(mhp->msg->sadb_msg_seq)) == NULL) {
6594 * the specified larval SA is already gone, or we got
6595 * a bogus sequence number. we can silently ignore it.
6601 /* reset acq counter in order to deletion by timehander. */
6602 acq->created = time_second;
6609 * This message is from user land.
6612 /* map satype to proto */
6613 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
6614 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
6616 return key_senderror(so, m, EINVAL);
6619 if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
6620 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
6621 mhp->ext[SADB_EXT_PROPOSAL] == NULL) {
6623 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
6625 return key_senderror(so, m, EINVAL);
6627 if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
6628 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
6629 mhp->extlen[SADB_EXT_PROPOSAL] < sizeof(struct sadb_prop)) {
6631 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
6633 return key_senderror(so, m, EINVAL);
6636 src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
6637 dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
6639 /* XXX boundary check against sa_len */
6640 KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
6643 * Make sure the port numbers are zero.
6644 * In case of NAT-T we will update them later if needed.
6646 KEY_PORTTOSADDR(&saidx.src, 0);
6647 KEY_PORTTOSADDR(&saidx.dst, 0);
6651 * Handle NAT-T info if present.
6654 if (mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
6655 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
6656 struct sadb_x_nat_t_port *sport, *dport;
6658 if (mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
6659 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
6660 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
6662 return key_senderror(so, m, EINVAL);
6665 sport = (struct sadb_x_nat_t_port *)
6666 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
6667 dport = (struct sadb_x_nat_t_port *)
6668 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
6671 KEY_PORTTOSADDR(&saidx.src,
6672 sport->sadb_x_nat_t_port_port);
6674 KEY_PORTTOSADDR(&saidx.dst,
6675 dport->sadb_x_nat_t_port_port);
6679 /* get a SA index */
6681 LIST_FOREACH(sah, &V_sahtree, chain) {
6682 if (sah->state == SADB_SASTATE_DEAD)
6684 if (key_cmpsaidx(&sah->saidx, &saidx, CMP_MODE_REQID))
6689 ipseclog((LOG_DEBUG, "%s: a SA exists already.\n", __func__));
6690 return key_senderror(so, m, EEXIST);
6693 error = key_acquire(&saidx, NULL);
6695 ipseclog((LOG_DEBUG, "%s: error %d returned from key_acquire\n",
6696 __func__, mhp->msg->sadb_msg_errno));
6697 return key_senderror(so, m, error);
6700 return key_sendup_mbuf(so, m, KEY_SENDUP_REGISTERED);
6704 * SADB_REGISTER processing.
6705 * If SATYPE_UNSPEC has been passed as satype, only return sabd_supported.
6708 * from the ikmpd, and register a socket to send PF_KEY messages,
6712 * If socket is detached, must free from regnode.
6714 * m will always be freed.
6717 key_register(so, m, mhp)
6720 const struct sadb_msghdr *mhp;
6722 struct secreg *reg, *newreg = 0;
6724 IPSEC_ASSERT(so != NULL, ("null socket"));
6725 IPSEC_ASSERT(m != NULL, ("null mbuf"));
6726 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
6727 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
6729 /* check for invalid register message */
6730 if (mhp->msg->sadb_msg_satype >= sizeof(V_regtree)/sizeof(V_regtree[0]))
6731 return key_senderror(so, m, EINVAL);
6733 /* When SATYPE_UNSPEC is specified, only return sabd_supported. */
6734 if (mhp->msg->sadb_msg_satype == SADB_SATYPE_UNSPEC)
6737 /* check whether existing or not */
6739 LIST_FOREACH(reg, &V_regtree[mhp->msg->sadb_msg_satype], chain) {
6740 if (reg->so == so) {
6742 ipseclog((LOG_DEBUG, "%s: socket exists already.\n",
6744 return key_senderror(so, m, EEXIST);
6748 /* create regnode */
6749 newreg = malloc(sizeof(struct secreg), M_IPSEC_SAR, M_NOWAIT|M_ZERO);
6750 if (newreg == NULL) {
6752 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
6753 return key_senderror(so, m, ENOBUFS);
6757 ((struct keycb *)sotorawcb(so))->kp_registered++;
6759 /* add regnode to regtree. */
6760 LIST_INSERT_HEAD(&V_regtree[mhp->msg->sadb_msg_satype], newreg, chain);
6766 struct sadb_msg *newmsg;
6767 struct sadb_supported *sup;
6768 u_int len, alen, elen;
6771 struct sadb_alg *alg;
6773 /* create new sadb_msg to reply. */
6775 for (i = 1; i <= SADB_AALG_MAX; i++) {
6776 if (ah_algorithm_lookup(i))
6777 alen += sizeof(struct sadb_alg);
6780 alen += sizeof(struct sadb_supported);
6782 for (i = 1; i <= SADB_EALG_MAX; i++) {
6783 if (esp_algorithm_lookup(i))
6784 elen += sizeof(struct sadb_alg);
6787 elen += sizeof(struct sadb_supported);
6789 len = sizeof(struct sadb_msg) + alen + elen;
6792 return key_senderror(so, m, ENOBUFS);
6794 MGETHDR(n, M_DONTWAIT, MT_DATA);
6796 MCLGET(n, M_DONTWAIT);
6797 if ((n->m_flags & M_EXT) == 0) {
6803 return key_senderror(so, m, ENOBUFS);
6805 n->m_pkthdr.len = n->m_len = len;
6809 m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
6810 newmsg = mtod(n, struct sadb_msg *);
6811 newmsg->sadb_msg_errno = 0;
6812 newmsg->sadb_msg_len = PFKEY_UNIT64(len);
6813 off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
6815 /* for authentication algorithm */
6817 sup = (struct sadb_supported *)(mtod(n, caddr_t) + off);
6818 sup->sadb_supported_len = PFKEY_UNIT64(alen);
6819 sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_AUTH;
6820 off += PFKEY_ALIGN8(sizeof(*sup));
6822 for (i = 1; i <= SADB_AALG_MAX; i++) {
6823 struct auth_hash *aalgo;
6824 u_int16_t minkeysize, maxkeysize;
6826 aalgo = ah_algorithm_lookup(i);
6829 alg = (struct sadb_alg *)(mtod(n, caddr_t) + off);
6830 alg->sadb_alg_id = i;
6831 alg->sadb_alg_ivlen = 0;
6832 key_getsizes_ah(aalgo, i, &minkeysize, &maxkeysize);
6833 alg->sadb_alg_minbits = _BITS(minkeysize);
6834 alg->sadb_alg_maxbits = _BITS(maxkeysize);
6835 off += PFKEY_ALIGN8(sizeof(*alg));
6839 /* for encryption algorithm */
6841 sup = (struct sadb_supported *)(mtod(n, caddr_t) + off);
6842 sup->sadb_supported_len = PFKEY_UNIT64(elen);
6843 sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_ENCRYPT;
6844 off += PFKEY_ALIGN8(sizeof(*sup));
6846 for (i = 1; i <= SADB_EALG_MAX; i++) {
6847 struct enc_xform *ealgo;
6849 ealgo = esp_algorithm_lookup(i);
6852 alg = (struct sadb_alg *)(mtod(n, caddr_t) + off);
6853 alg->sadb_alg_id = i;
6854 alg->sadb_alg_ivlen = ealgo->blocksize;
6855 alg->sadb_alg_minbits = _BITS(ealgo->minkey);
6856 alg->sadb_alg_maxbits = _BITS(ealgo->maxkey);
6857 off += PFKEY_ALIGN8(sizeof(struct sadb_alg));
6861 IPSEC_ASSERT(off == len,
6862 ("length assumption failed (off %u len %u)", off, len));
6865 return key_sendup_mbuf(so, n, KEY_SENDUP_REGISTERED);
6870 * free secreg entry registered.
6871 * XXX: I want to do free a socket marked done SADB_RESIGER to socket.
6874 key_freereg(struct socket *so)
6879 IPSEC_ASSERT(so != NULL, ("NULL so"));
6882 * check whether existing or not.
6883 * check all type of SA, because there is a potential that
6884 * one socket is registered to multiple type of SA.
6887 for (i = 0; i <= SADB_SATYPE_MAX; i++) {
6888 LIST_FOREACH(reg, &V_regtree[i], chain) {
6889 if (reg->so == so && __LIST_CHAINED(reg)) {
6890 LIST_REMOVE(reg, chain);
6891 free(reg, M_IPSEC_SAR);
6900 * SADB_EXPIRE processing
6902 * <base, SA, SA2, lifetime(C and one of HS), address(SD)>
6904 * NOTE: We send only soft lifetime extension.
6907 * others : error number
6910 key_expire(struct secasvar *sav)
6914 struct mbuf *result = NULL, *m;
6917 struct sadb_lifetime *lt;
6919 /* XXX: Why do we lock ? */
6920 s = splnet(); /*called from softclock()*/
6922 IPSEC_ASSERT (sav != NULL, ("null sav"));
6923 IPSEC_ASSERT (sav->sah != NULL, ("null sa header"));
6925 /* set msg header */
6926 satype = key_proto2satype(sav->sah->saidx.proto);
6927 IPSEC_ASSERT(satype != 0, ("invalid proto, satype %u", satype));
6928 m = key_setsadbmsg(SADB_EXPIRE, 0, satype, sav->seq, 0, sav->refcnt);
6935 /* create SA extension */
6936 m = key_setsadbsa(sav);
6943 /* create SA extension */
6944 m = key_setsadbxsa2(sav->sah->saidx.mode,
6945 sav->replay ? sav->replay->count : 0,
6946 sav->sah->saidx.reqid);
6953 /* create lifetime extension (current and soft) */
6954 len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
6955 m = key_alloc_mbuf(len);
6956 if (!m || m->m_next) { /*XXX*/
6962 bzero(mtod(m, caddr_t), len);
6963 lt = mtod(m, struct sadb_lifetime *);
6964 lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
6965 lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
6966 lt->sadb_lifetime_allocations = sav->lft_c->allocations;
6967 lt->sadb_lifetime_bytes = sav->lft_c->bytes;
6968 lt->sadb_lifetime_addtime = sav->lft_c->addtime;
6969 lt->sadb_lifetime_usetime = sav->lft_c->usetime;
6970 lt = (struct sadb_lifetime *)(mtod(m, caddr_t) + len / 2);
6971 lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
6972 lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
6973 lt->sadb_lifetime_allocations = sav->lft_s->allocations;
6974 lt->sadb_lifetime_bytes = sav->lft_s->bytes;
6975 lt->sadb_lifetime_addtime = sav->lft_s->addtime;
6976 lt->sadb_lifetime_usetime = sav->lft_s->usetime;
6979 /* set sadb_address for source */
6980 m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
6981 &sav->sah->saidx.src.sa,
6982 FULLMASK, IPSEC_ULPROTO_ANY);
6989 /* set sadb_address for destination */
6990 m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
6991 &sav->sah->saidx.dst.sa,
6992 FULLMASK, IPSEC_ULPROTO_ANY);
7000 * XXX-BZ Handle NAT-T extensions here.
7003 if ((result->m_flags & M_PKTHDR) == 0) {
7008 if (result->m_len < sizeof(struct sadb_msg)) {
7009 result = m_pullup(result, sizeof(struct sadb_msg));
7010 if (result == NULL) {
7016 result->m_pkthdr.len = 0;
7017 for (m = result; m; m = m->m_next)
7018 result->m_pkthdr.len += m->m_len;
7020 mtod(result, struct sadb_msg *)->sadb_msg_len =
7021 PFKEY_UNIT64(result->m_pkthdr.len);
7024 return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
7034 * SADB_FLUSH processing
7037 * from the ikmpd, and free all entries in secastree.
7041 * NOTE: to do is only marking SADB_SASTATE_DEAD.
7043 * m will always be freed.
7046 key_flush(so, m, mhp)
7049 const struct sadb_msghdr *mhp;
7051 struct sadb_msg *newmsg;
7052 struct secashead *sah, *nextsah;
7053 struct secasvar *sav, *nextsav;
7058 IPSEC_ASSERT(so != NULL, ("null socket"));
7059 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
7060 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
7062 /* map satype to proto */
7063 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
7064 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
7066 return key_senderror(so, m, EINVAL);
7069 /* no SATYPE specified, i.e. flushing all SA. */
7071 for (sah = LIST_FIRST(&V_sahtree);
7074 nextsah = LIST_NEXT(sah, chain);
7076 if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC
7077 && proto != sah->saidx.proto)
7081 stateidx < _ARRAYLEN(saorder_state_alive);
7083 state = saorder_state_any[stateidx];
7084 for (sav = LIST_FIRST(&sah->savtree[state]);
7088 nextsav = LIST_NEXT(sav, chain);
7090 key_sa_chgstate(sav, SADB_SASTATE_DEAD);
7095 sah->state = SADB_SASTATE_DEAD;
7099 if (m->m_len < sizeof(struct sadb_msg) ||
7100 sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
7101 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
7102 return key_senderror(so, m, ENOBUFS);
7108 m->m_pkthdr.len = m->m_len = sizeof(struct sadb_msg);
7109 newmsg = mtod(m, struct sadb_msg *);
7110 newmsg->sadb_msg_errno = 0;
7111 newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
7113 return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
7117 * SADB_DUMP processing
7118 * dump all entries including status of DEAD in SAD.
7121 * from the ikmpd, and dump all secasvar leaves
7126 * m will always be freed.
7129 key_dump(so, m, mhp)
7132 const struct sadb_msghdr *mhp;
7134 struct secashead *sah;
7135 struct secasvar *sav;
7141 struct sadb_msg *newmsg;
7144 IPSEC_ASSERT(so != NULL, ("null socket"));
7145 IPSEC_ASSERT(m != NULL, ("null mbuf"));
7146 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
7147 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
7149 /* map satype to proto */
7150 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
7151 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
7153 return key_senderror(so, m, EINVAL);
7156 /* count sav entries to be sent to the userland. */
7159 LIST_FOREACH(sah, &V_sahtree, chain) {
7160 if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC
7161 && proto != sah->saidx.proto)
7165 stateidx < _ARRAYLEN(saorder_state_any);
7167 state = saorder_state_any[stateidx];
7168 LIST_FOREACH(sav, &sah->savtree[state], chain) {
7176 return key_senderror(so, m, ENOENT);
7179 /* send this to the userland, one at a time. */
7181 LIST_FOREACH(sah, &V_sahtree, chain) {
7182 if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC
7183 && proto != sah->saidx.proto)
7186 /* map proto to satype */
7187 if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
7189 ipseclog((LOG_DEBUG, "%s: there was invalid proto in "
7190 "SAD.\n", __func__));
7191 return key_senderror(so, m, EINVAL);
7195 stateidx < _ARRAYLEN(saorder_state_any);
7197 state = saorder_state_any[stateidx];
7198 LIST_FOREACH(sav, &sah->savtree[state], chain) {
7199 n = key_setdumpsa(sav, SADB_DUMP, satype,
7200 --cnt, mhp->msg->sadb_msg_pid);
7203 return key_senderror(so, m, ENOBUFS);
7205 key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
7216 * SADB_X_PROMISC processing
7218 * m will always be freed.
7221 key_promisc(so, m, mhp)
7224 const struct sadb_msghdr *mhp;
7228 IPSEC_ASSERT(so != NULL, ("null socket"));
7229 IPSEC_ASSERT(m != NULL, ("null mbuf"));
7230 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
7231 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
7233 olen = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
7235 if (olen < sizeof(struct sadb_msg)) {
7237 return key_senderror(so, m, EINVAL);
7242 } else if (olen == sizeof(struct sadb_msg)) {
7243 /* enable/disable promisc mode */
7246 if ((kp = (struct keycb *)sotorawcb(so)) == NULL)
7247 return key_senderror(so, m, EINVAL);
7248 mhp->msg->sadb_msg_errno = 0;
7249 switch (mhp->msg->sadb_msg_satype) {
7252 kp->kp_promisc = mhp->msg->sadb_msg_satype;
7255 return key_senderror(so, m, EINVAL);
7258 /* send the original message back to everyone */
7259 mhp->msg->sadb_msg_errno = 0;
7260 return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
7262 /* send packet as is */
7264 m_adj(m, PFKEY_ALIGN8(sizeof(struct sadb_msg)));
7266 /* TODO: if sadb_msg_seq is specified, send to specific pid */
7267 return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
7271 static int (*key_typesw[]) __P((struct socket *, struct mbuf *,
7272 const struct sadb_msghdr *)) = {
7273 NULL, /* SADB_RESERVED */
7274 key_getspi, /* SADB_GETSPI */
7275 key_update, /* SADB_UPDATE */
7276 key_add, /* SADB_ADD */
7277 key_delete, /* SADB_DELETE */
7278 key_get, /* SADB_GET */
7279 key_acquire2, /* SADB_ACQUIRE */
7280 key_register, /* SADB_REGISTER */
7281 NULL, /* SADB_EXPIRE */
7282 key_flush, /* SADB_FLUSH */
7283 key_dump, /* SADB_DUMP */
7284 key_promisc, /* SADB_X_PROMISC */
7285 NULL, /* SADB_X_PCHANGE */
7286 key_spdadd, /* SADB_X_SPDUPDATE */
7287 key_spdadd, /* SADB_X_SPDADD */
7288 key_spddelete, /* SADB_X_SPDDELETE */
7289 key_spdget, /* SADB_X_SPDGET */
7290 NULL, /* SADB_X_SPDACQUIRE */
7291 key_spddump, /* SADB_X_SPDDUMP */
7292 key_spdflush, /* SADB_X_SPDFLUSH */
7293 key_spdadd, /* SADB_X_SPDSETIDX */
7294 NULL, /* SADB_X_SPDEXPIRE */
7295 key_spddelete2, /* SADB_X_SPDDELETE2 */
7299 * parse sadb_msg buffer to process PFKEYv2,
7300 * and create a data to response if needed.
7301 * I think to be dealed with mbuf directly.
7303 * msgp : pointer to pointer to a received buffer pulluped.
7304 * This is rewrited to response.
7305 * so : pointer to socket.
7307 * length for buffer to send to user process.
7314 struct sadb_msg *msg;
7315 struct sadb_msghdr mh;
7320 IPSEC_ASSERT(so != NULL, ("null socket"));
7321 IPSEC_ASSERT(m != NULL, ("null mbuf"));
7323 #if 0 /*kdebug_sadb assumes msg in linear buffer*/
7324 KEYDEBUG(KEYDEBUG_KEY_DUMP,
7325 ipseclog((LOG_DEBUG, "%s: passed sadb_msg\n", __func__));
7329 if (m->m_len < sizeof(struct sadb_msg)) {
7330 m = m_pullup(m, sizeof(struct sadb_msg));
7334 msg = mtod(m, struct sadb_msg *);
7335 orglen = PFKEY_UNUNIT64(msg->sadb_msg_len);
7336 target = KEY_SENDUP_ONE;
7338 if ((m->m_flags & M_PKTHDR) == 0 ||
7339 m->m_pkthdr.len != m->m_pkthdr.len) {
7340 ipseclog((LOG_DEBUG, "%s: invalid message length.\n",__func__));
7341 V_pfkeystat.out_invlen++;
7346 if (msg->sadb_msg_version != PF_KEY_V2) {
7347 ipseclog((LOG_DEBUG, "%s: PF_KEY version %u is mismatched.\n",
7348 __func__, msg->sadb_msg_version));
7349 V_pfkeystat.out_invver++;
7354 if (msg->sadb_msg_type > SADB_MAX) {
7355 ipseclog((LOG_DEBUG, "%s: invalid type %u is passed.\n",
7356 __func__, msg->sadb_msg_type));
7357 V_pfkeystat.out_invmsgtype++;
7362 /* for old-fashioned code - should be nuked */
7363 if (m->m_pkthdr.len > MCLBYTES) {
7370 MGETHDR(n, M_DONTWAIT, MT_DATA);
7371 if (n && m->m_pkthdr.len > MHLEN) {
7372 MCLGET(n, M_DONTWAIT);
7373 if ((n->m_flags & M_EXT) == 0) {
7382 m_copydata(m, 0, m->m_pkthdr.len, mtod(n, caddr_t));
7383 n->m_pkthdr.len = n->m_len = m->m_pkthdr.len;
7389 /* align the mbuf chain so that extensions are in contiguous region. */
7390 error = key_align(m, &mh);
7397 switch (msg->sadb_msg_satype) {
7398 case SADB_SATYPE_UNSPEC:
7399 switch (msg->sadb_msg_type) {
7407 ipseclog((LOG_DEBUG, "%s: must specify satype "
7408 "when msg type=%u.\n", __func__,
7409 msg->sadb_msg_type));
7410 V_pfkeystat.out_invsatype++;
7415 case SADB_SATYPE_AH:
7416 case SADB_SATYPE_ESP:
7417 case SADB_X_SATYPE_IPCOMP:
7418 case SADB_X_SATYPE_TCPSIGNATURE:
7419 switch (msg->sadb_msg_type) {
7421 case SADB_X_SPDDELETE:
7423 case SADB_X_SPDDUMP:
7424 case SADB_X_SPDFLUSH:
7425 case SADB_X_SPDSETIDX:
7426 case SADB_X_SPDUPDATE:
7427 case SADB_X_SPDDELETE2:
7428 ipseclog((LOG_DEBUG, "%s: illegal satype=%u\n",
7429 __func__, msg->sadb_msg_type));
7430 V_pfkeystat.out_invsatype++;
7435 case SADB_SATYPE_RSVP:
7436 case SADB_SATYPE_OSPFV2:
7437 case SADB_SATYPE_RIPV2:
7438 case SADB_SATYPE_MIP:
7439 ipseclog((LOG_DEBUG, "%s: type %u isn't supported.\n",
7440 __func__, msg->sadb_msg_satype));
7441 V_pfkeystat.out_invsatype++;
7444 case 1: /* XXX: What does it do? */
7445 if (msg->sadb_msg_type == SADB_X_PROMISC)
7449 ipseclog((LOG_DEBUG, "%s: invalid type %u is passed.\n",
7450 __func__, msg->sadb_msg_satype));
7451 V_pfkeystat.out_invsatype++;
7456 /* check field of upper layer protocol and address family */
7457 if (mh.ext[SADB_EXT_ADDRESS_SRC] != NULL
7458 && mh.ext[SADB_EXT_ADDRESS_DST] != NULL) {
7459 struct sadb_address *src0, *dst0;
7462 src0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_SRC]);
7463 dst0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_DST]);
7465 /* check upper layer protocol */
7466 if (src0->sadb_address_proto != dst0->sadb_address_proto) {
7467 ipseclog((LOG_DEBUG, "%s: upper layer protocol "
7468 "mismatched.\n", __func__));
7469 V_pfkeystat.out_invaddr++;
7475 if (PFKEY_ADDR_SADDR(src0)->sa_family !=
7476 PFKEY_ADDR_SADDR(dst0)->sa_family) {
7477 ipseclog((LOG_DEBUG, "%s: address family mismatched.\n",
7479 V_pfkeystat.out_invaddr++;
7483 if (PFKEY_ADDR_SADDR(src0)->sa_len !=
7484 PFKEY_ADDR_SADDR(dst0)->sa_len) {
7485 ipseclog((LOG_DEBUG, "%s: address struct size "
7486 "mismatched.\n", __func__));
7487 V_pfkeystat.out_invaddr++;
7492 switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
7494 if (PFKEY_ADDR_SADDR(src0)->sa_len !=
7495 sizeof(struct sockaddr_in)) {
7496 V_pfkeystat.out_invaddr++;
7502 if (PFKEY_ADDR_SADDR(src0)->sa_len !=
7503 sizeof(struct sockaddr_in6)) {
7504 V_pfkeystat.out_invaddr++;
7510 ipseclog((LOG_DEBUG, "%s: unsupported address family\n",
7512 V_pfkeystat.out_invaddr++;
7513 error = EAFNOSUPPORT;
7517 switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
7519 plen = sizeof(struct in_addr) << 3;
7522 plen = sizeof(struct in6_addr) << 3;
7525 plen = 0; /*fool gcc*/
7529 /* check max prefix length */
7530 if (src0->sadb_address_prefixlen > plen ||
7531 dst0->sadb_address_prefixlen > plen) {
7532 ipseclog((LOG_DEBUG, "%s: illegal prefixlen.\n",
7534 V_pfkeystat.out_invaddr++;
7540 * prefixlen == 0 is valid because there can be a case when
7541 * all addresses are matched.
7545 if (msg->sadb_msg_type >= sizeof(key_typesw)/sizeof(key_typesw[0]) ||
7546 key_typesw[msg->sadb_msg_type] == NULL) {
7547 V_pfkeystat.out_invmsgtype++;
7552 return (*key_typesw[msg->sadb_msg_type])(so, m, &mh);
7555 msg->sadb_msg_errno = error;
7556 return key_sendup_mbuf(so, m, target);
7560 key_senderror(so, m, code)
7565 struct sadb_msg *msg;
7567 IPSEC_ASSERT(m->m_len >= sizeof(struct sadb_msg),
7568 ("mbuf too small, len %u", m->m_len));
7570 msg = mtod(m, struct sadb_msg *);
7571 msg->sadb_msg_errno = code;
7572 return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
7576 * set the pointer to each header into message buffer.
7577 * m will be freed on error.
7578 * XXX larger-than-MCLBYTES extension?
7583 struct sadb_msghdr *mhp;
7586 struct sadb_ext *ext;
7591 IPSEC_ASSERT(m != NULL, ("null mbuf"));
7592 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
7593 IPSEC_ASSERT(m->m_len >= sizeof(struct sadb_msg),
7594 ("mbuf too small, len %u", m->m_len));
7597 bzero(mhp, sizeof(*mhp));
7599 mhp->msg = mtod(m, struct sadb_msg *);
7600 mhp->ext[0] = (struct sadb_ext *)mhp->msg; /*XXX backward compat */
7602 end = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
7603 extlen = end; /*just in case extlen is not updated*/
7604 for (off = sizeof(struct sadb_msg); off < end; off += extlen) {
7605 n = m_pulldown(m, off, sizeof(struct sadb_ext), &toff);
7607 /* m is already freed */
7610 ext = (struct sadb_ext *)(mtod(n, caddr_t) + toff);
7613 switch (ext->sadb_ext_type) {
7615 case SADB_EXT_ADDRESS_SRC:
7616 case SADB_EXT_ADDRESS_DST:
7617 case SADB_EXT_ADDRESS_PROXY:
7618 case SADB_EXT_LIFETIME_CURRENT:
7619 case SADB_EXT_LIFETIME_HARD:
7620 case SADB_EXT_LIFETIME_SOFT:
7621 case SADB_EXT_KEY_AUTH:
7622 case SADB_EXT_KEY_ENCRYPT:
7623 case SADB_EXT_IDENTITY_SRC:
7624 case SADB_EXT_IDENTITY_DST:
7625 case SADB_EXT_SENSITIVITY:
7626 case SADB_EXT_PROPOSAL:
7627 case SADB_EXT_SUPPORTED_AUTH:
7628 case SADB_EXT_SUPPORTED_ENCRYPT:
7629 case SADB_EXT_SPIRANGE:
7630 case SADB_X_EXT_POLICY:
7631 case SADB_X_EXT_SA2:
7633 case SADB_X_EXT_NAT_T_TYPE:
7634 case SADB_X_EXT_NAT_T_SPORT:
7635 case SADB_X_EXT_NAT_T_DPORT:
7636 case SADB_X_EXT_NAT_T_OAI:
7637 case SADB_X_EXT_NAT_T_OAR:
7638 case SADB_X_EXT_NAT_T_FRAG:
7640 /* duplicate check */
7642 * XXX Are there duplication payloads of either
7643 * KEY_AUTH or KEY_ENCRYPT ?
7645 if (mhp->ext[ext->sadb_ext_type] != NULL) {
7646 ipseclog((LOG_DEBUG, "%s: duplicate ext_type "
7647 "%u\n", __func__, ext->sadb_ext_type));
7649 V_pfkeystat.out_dupext++;
7654 ipseclog((LOG_DEBUG, "%s: invalid ext_type %u\n",
7655 __func__, ext->sadb_ext_type));
7657 V_pfkeystat.out_invexttype++;
7661 extlen = PFKEY_UNUNIT64(ext->sadb_ext_len);
7663 if (key_validate_ext(ext, extlen)) {
7665 V_pfkeystat.out_invlen++;
7669 n = m_pulldown(m, off, extlen, &toff);
7671 /* m is already freed */
7674 ext = (struct sadb_ext *)(mtod(n, caddr_t) + toff);
7676 mhp->ext[ext->sadb_ext_type] = ext;
7677 mhp->extoff[ext->sadb_ext_type] = off;
7678 mhp->extlen[ext->sadb_ext_type] = extlen;
7683 V_pfkeystat.out_invlen++;
7691 key_validate_ext(ext, len)
7692 const struct sadb_ext *ext;
7695 const struct sockaddr *sa;
7696 enum { NONE, ADDR } checktype = NONE;
7698 const int sal = offsetof(struct sockaddr, sa_len) + sizeof(sa->sa_len);
7700 if (len != PFKEY_UNUNIT64(ext->sadb_ext_len))
7703 /* if it does not match minimum/maximum length, bail */
7704 if (ext->sadb_ext_type >= sizeof(minsize) / sizeof(minsize[0]) ||
7705 ext->sadb_ext_type >= sizeof(maxsize) / sizeof(maxsize[0]))
7707 if (!minsize[ext->sadb_ext_type] || len < minsize[ext->sadb_ext_type])
7709 if (maxsize[ext->sadb_ext_type] && len > maxsize[ext->sadb_ext_type])
7712 /* more checks based on sadb_ext_type XXX need more */
7713 switch (ext->sadb_ext_type) {
7714 case SADB_EXT_ADDRESS_SRC:
7715 case SADB_EXT_ADDRESS_DST:
7716 case SADB_EXT_ADDRESS_PROXY:
7717 baselen = PFKEY_ALIGN8(sizeof(struct sadb_address));
7720 case SADB_EXT_IDENTITY_SRC:
7721 case SADB_EXT_IDENTITY_DST:
7722 if (((const struct sadb_ident *)ext)->sadb_ident_type ==
7723 SADB_X_IDENTTYPE_ADDR) {
7724 baselen = PFKEY_ALIGN8(sizeof(struct sadb_ident));
7734 switch (checktype) {
7738 sa = (const struct sockaddr *)(((const u_int8_t*)ext)+baselen);
7739 if (len < baselen + sal)
7741 if (baselen + PFKEY_ALIGN8(sa->sa_len) != len)
7754 for (i = 0; i < IPSEC_DIR_MAX; i++)
7755 LIST_INIT(&V_sptree[i]);
7757 LIST_INIT(&V_sahtree);
7759 for (i = 0; i <= SADB_SATYPE_MAX; i++)
7760 LIST_INIT(&V_regtree[i]);
7762 LIST_INIT(&V_acqtree);
7763 LIST_INIT(&V_spacqtree);
7765 /* system default */
7766 V_ip4_def_policy.policy = IPSEC_POLICY_NONE;
7767 V_ip4_def_policy.refcnt++; /*never reclaim this*/
7769 if (!IS_DEFAULT_VNET(curvnet))
7773 REGTREE_LOCK_INIT();
7774 SAHTREE_LOCK_INIT();
7778 #ifndef IPSEC_DEBUG2
7779 timeout((void *)key_timehandler, (void *)0, hz);
7780 #endif /*IPSEC_DEBUG2*/
7782 /* initialize key statistics */
7783 keystat.getspi_count = 1;
7785 printf("IPsec: Initialized Security Association Processing.\n");
7792 struct secpolicy *sp, *nextsp;
7793 struct secacq *acq, *nextacq;
7794 struct secspacq *spacq, *nextspacq;
7795 struct secashead *sah, *nextsah;
7800 for (i = 0; i < IPSEC_DIR_MAX; i++) {
7801 for (sp = LIST_FIRST(&V_sptree[i]);
7802 sp != NULL; sp = nextsp) {
7803 nextsp = LIST_NEXT(sp, chain);
7804 if (__LIST_CHAINED(sp)) {
7805 LIST_REMOVE(sp, chain);
7806 free(sp, M_IPSEC_SP);
7813 for (sah = LIST_FIRST(&V_sahtree); sah != NULL; sah = nextsah) {
7814 nextsah = LIST_NEXT(sah, chain);
7815 if (__LIST_CHAINED(sah)) {
7816 LIST_REMOVE(sah, chain);
7817 free(sah, M_IPSEC_SAH);
7823 for (i = 0; i <= SADB_SATYPE_MAX; i++) {
7824 LIST_FOREACH(reg, &V_regtree[i], chain) {
7825 if (__LIST_CHAINED(reg)) {
7826 LIST_REMOVE(reg, chain);
7827 free(reg, M_IPSEC_SAR);
7835 for (acq = LIST_FIRST(&V_acqtree); acq != NULL; acq = nextacq) {
7836 nextacq = LIST_NEXT(acq, chain);
7837 if (__LIST_CHAINED(acq)) {
7838 LIST_REMOVE(acq, chain);
7839 free(acq, M_IPSEC_SAQ);
7845 for (spacq = LIST_FIRST(&V_spacqtree); spacq != NULL;
7846 spacq = nextspacq) {
7847 nextspacq = LIST_NEXT(spacq, chain);
7848 if (__LIST_CHAINED(spacq)) {
7849 LIST_REMOVE(spacq, chain);
7850 free(spacq, M_IPSEC_SAQ);
7858 * XXX: maybe This function is called after INBOUND IPsec processing.
7860 * Special check for tunnel-mode packets.
7861 * We must make some checks for consistency between inner and outer IP header.
7863 * xxx more checks to be provided
7866 key_checktunnelsanity(sav, family, src, dst)
7867 struct secasvar *sav;
7872 IPSEC_ASSERT(sav->sah != NULL, ("null SA header"));
7874 /* XXX: check inner IP header */
7879 /* record data transfer on SA, and update timestamps */
7881 key_sa_recordxfer(sav, m)
7882 struct secasvar *sav;
7885 IPSEC_ASSERT(sav != NULL, ("Null secasvar"));
7886 IPSEC_ASSERT(m != NULL, ("Null mbuf"));
7891 * XXX Currently, there is a difference of bytes size
7892 * between inbound and outbound processing.
7894 sav->lft_c->bytes += m->m_pkthdr.len;
7895 /* to check bytes lifetime is done in key_timehandler(). */
7898 * We use the number of packets as the unit of
7899 * allocations. We increment the variable
7900 * whenever {esp,ah}_{in,out}put is called.
7902 sav->lft_c->allocations++;
7903 /* XXX check for expires? */
7906 * NOTE: We record CURRENT usetime by using wall clock,
7907 * in seconds. HARD and SOFT lifetime are measured by the time
7908 * difference (again in seconds) from usetime.
7912 * -----+-----+--------+---> t
7913 * <--------------> HARD
7916 sav->lft_c->usetime = time_second;
7917 /* XXX check for expires? */
7924 key_sa_routechange(dst)
7925 struct sockaddr *dst;
7927 struct secashead *sah;
7931 LIST_FOREACH(sah, &V_sahtree, chain) {
7932 ro = &sah->route_cache.sa_route;
7933 if (ro->ro_rt && dst->sa_len == ro->ro_dst.sa_len
7934 && bcmp(dst, &ro->ro_dst, dst->sa_len) == 0) {
7936 ro->ro_rt = (struct rtentry *)NULL;
7943 key_sa_chgstate(struct secasvar *sav, u_int8_t state)
7945 IPSEC_ASSERT(sav != NULL, ("NULL sav"));
7946 SAHTREE_LOCK_ASSERT();
7948 if (sav->state != state) {
7949 if (__LIST_CHAINED(sav))
7950 LIST_REMOVE(sav, chain);
7952 LIST_INSERT_HEAD(&sav->sah->savtree[state], sav, chain);
7958 struct secasvar *sav;
7961 IPSEC_ASSERT(sav->iv != NULL, ("null IV"));
7962 key_randomfill(sav->iv, sav->ivlen);
7966 static struct mbuf *
7970 struct mbuf *m = NULL, *n;
7975 MGET(n, M_DONTWAIT, MT_DATA);
7976 if (n && len > MLEN)
7977 MCLGET(n, M_DONTWAIT);
7985 n->m_len = M_TRAILINGSPACE(n);
7986 /* use the bottom of mbuf, hoping we can prepend afterwards */
7987 if (n->m_len > len) {
7988 t = (n->m_len - len) & ~(sizeof(long) - 1);
8005 * Take one of the kernel's security keys and convert it into a PF_KEY
8006 * structure within an mbuf, suitable for sending up to a waiting
8007 * application in user land.
8010 * src: A pointer to a kernel security key.
8011 * exttype: Which type of key this is. Refer to the PF_KEY data structures.
8013 * a valid mbuf or NULL indicating an error
8017 static struct mbuf *
8018 key_setkey(struct seckey *src, u_int16_t exttype)
8027 len = PFKEY_ALIGN8(sizeof(struct sadb_key) + _KEYLEN(src));
8028 m = key_alloc_mbuf(len);
8031 p = mtod(m, struct sadb_key *);
8033 p->sadb_key_len = PFKEY_UNIT64(len);
8034 p->sadb_key_exttype = exttype;
8035 p->sadb_key_bits = src->bits;
8036 bcopy(src->key_data, _KEYBUF(p), _KEYLEN(src));
8042 * Take one of the kernel's lifetime data structures and convert it
8043 * into a PF_KEY structure within an mbuf, suitable for sending up to
8044 * a waiting application in user land.
8047 * src: A pointer to a kernel lifetime structure.
8048 * exttype: Which type of lifetime this is. Refer to the PF_KEY
8049 * data structures for more information.
8051 * a valid mbuf or NULL indicating an error
8055 static struct mbuf *
8056 key_setlifetime(struct seclifetime *src, u_int16_t exttype)
8058 struct mbuf *m = NULL;
8059 struct sadb_lifetime *p;
8060 int len = PFKEY_ALIGN8(sizeof(struct sadb_lifetime));
8065 m = key_alloc_mbuf(len);
8068 p = mtod(m, struct sadb_lifetime *);
8071 p->sadb_lifetime_len = PFKEY_UNIT64(len);
8072 p->sadb_lifetime_exttype = exttype;
8073 p->sadb_lifetime_allocations = src->allocations;
8074 p->sadb_lifetime_bytes = src->bytes;
8075 p->sadb_lifetime_addtime = src->addtime;
8076 p->sadb_lifetime_usetime = src->usetime;