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);
2289 return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
2291 return key_senderror(so, m, ENOBUFS);
2295 * SADB_X_SPDACQUIRE processing.
2296 * Acquire policy and SA(s) for a *OUTBOUND* packet.
2299 * to KMD, and expect to receive
2300 * <base> with SADB_X_SPDACQUIRE if error occured,
2303 * with SADB_X_SPDUPDATE from KMD by PF_KEY.
2304 * policy(*) is without policy requests.
2307 * others: error number
2311 struct secpolicy *sp;
2313 struct mbuf *result = NULL, *m;
2314 struct secspacq *newspacq;
2316 IPSEC_ASSERT(sp != NULL, ("null secpolicy"));
2317 IPSEC_ASSERT(sp->req == NULL, ("policy exists"));
2318 IPSEC_ASSERT(sp->policy == IPSEC_POLICY_IPSEC,
2319 ("policy not IPSEC %u", sp->policy));
2321 /* Get an entry to check whether sent message or not. */
2322 newspacq = key_getspacq(&sp->spidx);
2323 if (newspacq != NULL) {
2324 if (V_key_blockacq_count < newspacq->count) {
2325 /* reset counter and do send message. */
2326 newspacq->count = 0;
2328 /* increment counter and do nothing. */
2334 /* make new entry for blocking to send SADB_ACQUIRE. */
2335 newspacq = key_newspacq(&sp->spidx);
2336 if (newspacq == NULL)
2340 /* create new sadb_msg to reply. */
2341 m = key_setsadbmsg(SADB_X_SPDACQUIRE, 0, 0, 0, 0, 0);
2347 result->m_pkthdr.len = 0;
2348 for (m = result; m; m = m->m_next)
2349 result->m_pkthdr.len += m->m_len;
2351 mtod(result, struct sadb_msg *)->sadb_msg_len =
2352 PFKEY_UNIT64(result->m_pkthdr.len);
2354 return key_sendup_mbuf(NULL, m, KEY_SENDUP_REGISTERED);
2358 * SADB_SPDFLUSH processing
2361 * from the user, and free all entries in secpctree.
2365 * NOTE: what to do is only marking SADB_SASTATE_DEAD.
2367 * m will always be freed.
2370 key_spdflush(so, m, mhp)
2373 const struct sadb_msghdr *mhp;
2375 struct sadb_msg *newmsg;
2376 struct secpolicy *sp;
2379 IPSEC_ASSERT(so != NULL, ("null socket"));
2380 IPSEC_ASSERT(m != NULL, ("null mbuf"));
2381 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
2382 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
2384 if (m->m_len != PFKEY_ALIGN8(sizeof(struct sadb_msg)))
2385 return key_senderror(so, m, EINVAL);
2387 for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
2389 LIST_FOREACH(sp, &V_sptree[dir], chain)
2390 sp->state = IPSEC_SPSTATE_DEAD;
2394 if (sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
2395 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
2396 return key_senderror(so, m, ENOBUFS);
2402 m->m_pkthdr.len = m->m_len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
2403 newmsg = mtod(m, struct sadb_msg *);
2404 newmsg->sadb_msg_errno = 0;
2405 newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
2407 return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
2411 * SADB_SPDDUMP processing
2414 * from the user, and dump all SP leaves
2419 * m will always be freed.
2422 key_spddump(so, m, mhp)
2425 const struct sadb_msghdr *mhp;
2427 struct secpolicy *sp;
2432 IPSEC_ASSERT(so != NULL, ("null socket"));
2433 IPSEC_ASSERT(m != NULL, ("null mbuf"));
2434 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
2435 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
2437 /* search SPD entry and get buffer size. */
2440 for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
2441 LIST_FOREACH(sp, &V_sptree[dir], chain) {
2448 return key_senderror(so, m, ENOENT);
2451 for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
2452 LIST_FOREACH(sp, &V_sptree[dir], chain) {
2454 n = key_setdumpsp(sp, SADB_X_SPDDUMP, cnt,
2455 mhp->msg->sadb_msg_pid);
2458 key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
2467 static struct mbuf *
2468 key_setdumpsp(struct secpolicy *sp, u_int8_t type, u_int32_t seq, u_int32_t pid)
2470 struct mbuf *result = NULL, *m;
2471 struct seclifetime lt;
2473 m = key_setsadbmsg(type, 0, SADB_SATYPE_UNSPEC, seq, pid, sp->refcnt);
2479 * Note: do not send SADB_X_EXT_NAT_T_* here:
2480 * we are sending traffic endpoints.
2482 m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
2483 &sp->spidx.src.sa, sp->spidx.prefs,
2484 sp->spidx.ul_proto);
2489 m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
2490 &sp->spidx.dst.sa, sp->spidx.prefd,
2491 sp->spidx.ul_proto);
2502 lt.addtime=sp->created;
2503 lt.usetime= sp->lastused;
2504 m = key_setlifetime(<, SADB_EXT_LIFETIME_CURRENT);
2509 lt.addtime=sp->lifetime;
2510 lt.usetime= sp->validtime;
2511 m = key_setlifetime(<, SADB_EXT_LIFETIME_HARD);
2517 if ((result->m_flags & M_PKTHDR) == 0)
2520 if (result->m_len < sizeof(struct sadb_msg)) {
2521 result = m_pullup(result, sizeof(struct sadb_msg));
2526 result->m_pkthdr.len = 0;
2527 for (m = result; m; m = m->m_next)
2528 result->m_pkthdr.len += m->m_len;
2530 mtod(result, struct sadb_msg *)->sadb_msg_len =
2531 PFKEY_UNIT64(result->m_pkthdr.len);
2541 * get PFKEY message length for security policy and request.
2544 key_getspreqmsglen(sp)
2545 struct secpolicy *sp;
2549 tlen = sizeof(struct sadb_x_policy);
2551 /* if is the policy for ipsec ? */
2552 if (sp->policy != IPSEC_POLICY_IPSEC)
2555 /* get length of ipsec requests */
2557 struct ipsecrequest *isr;
2560 for (isr = sp->req; isr != NULL; isr = isr->next) {
2561 len = sizeof(struct sadb_x_ipsecrequest)
2562 + isr->saidx.src.sa.sa_len
2563 + isr->saidx.dst.sa.sa_len;
2565 tlen += PFKEY_ALIGN8(len);
2573 * SADB_SPDEXPIRE processing
2575 * <base, address(SD), lifetime(CH), policy>
2579 * others : error number
2583 struct secpolicy *sp;
2585 struct mbuf *result = NULL, *m;
2588 struct sadb_lifetime *lt;
2590 /* XXX: Why do we lock ? */
2592 IPSEC_ASSERT(sp != NULL, ("null secpolicy"));
2594 /* set msg header */
2595 m = key_setsadbmsg(SADB_X_SPDEXPIRE, 0, 0, 0, 0, 0);
2602 /* create lifetime extension (current and hard) */
2603 len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
2604 m = key_alloc_mbuf(len);
2605 if (!m || m->m_next) { /*XXX*/
2611 bzero(mtod(m, caddr_t), len);
2612 lt = mtod(m, struct sadb_lifetime *);
2613 lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
2614 lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
2615 lt->sadb_lifetime_allocations = 0;
2616 lt->sadb_lifetime_bytes = 0;
2617 lt->sadb_lifetime_addtime = sp->created;
2618 lt->sadb_lifetime_usetime = sp->lastused;
2619 lt = (struct sadb_lifetime *)(mtod(m, caddr_t) + len / 2);
2620 lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
2621 lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
2622 lt->sadb_lifetime_allocations = 0;
2623 lt->sadb_lifetime_bytes = 0;
2624 lt->sadb_lifetime_addtime = sp->lifetime;
2625 lt->sadb_lifetime_usetime = sp->validtime;
2629 * Note: do not send SADB_X_EXT_NAT_T_* here:
2630 * we are sending traffic endpoints.
2633 /* set sadb_address for source */
2634 m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
2636 sp->spidx.prefs, sp->spidx.ul_proto);
2643 /* set sadb_address for destination */
2644 m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
2646 sp->spidx.prefd, sp->spidx.ul_proto);
2661 if ((result->m_flags & M_PKTHDR) == 0) {
2666 if (result->m_len < sizeof(struct sadb_msg)) {
2667 result = m_pullup(result, sizeof(struct sadb_msg));
2668 if (result == NULL) {
2674 result->m_pkthdr.len = 0;
2675 for (m = result; m; m = m->m_next)
2676 result->m_pkthdr.len += m->m_len;
2678 mtod(result, struct sadb_msg *)->sadb_msg_len =
2679 PFKEY_UNIT64(result->m_pkthdr.len);
2681 return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
2689 /* %%% SAD management */
2691 * allocating a memory for new SA head, and copy from the values of mhp.
2692 * OUT: NULL : failure due to the lack of memory.
2693 * others : pointer to new SA head.
2695 static struct secashead *
2697 struct secasindex *saidx;
2699 struct secashead *newsah;
2701 IPSEC_ASSERT(saidx != NULL, ("null saidx"));
2703 newsah = malloc(sizeof(struct secashead), M_IPSEC_SAH, M_NOWAIT|M_ZERO);
2704 if (newsah != NULL) {
2706 for (i = 0; i < sizeof(newsah->savtree)/sizeof(newsah->savtree[0]); i++)
2707 LIST_INIT(&newsah->savtree[i]);
2708 newsah->saidx = *saidx;
2710 /* add to saidxtree */
2711 newsah->state = SADB_SASTATE_MATURE;
2714 LIST_INSERT_HEAD(&V_sahtree, newsah, chain);
2721 * delete SA index and all SA registerd.
2725 struct secashead *sah;
2727 struct secasvar *sav, *nextsav;
2731 IPSEC_ASSERT(sah != NULL, ("NULL sah"));
2732 SAHTREE_LOCK_ASSERT();
2734 /* searching all SA registerd in the secindex. */
2736 stateidx < _ARRAYLEN(saorder_state_any);
2738 u_int state = saorder_state_any[stateidx];
2739 LIST_FOREACH_SAFE(sav, &sah->savtree[state], chain, nextsav) {
2740 if (sav->refcnt == 0) {
2742 KEY_CHKSASTATE(state, sav->state, __func__);
2744 * do NOT call KEY_FREESAV here:
2745 * it will only delete the sav if refcnt == 1,
2746 * where we already know that refcnt == 0
2750 /* give up to delete this sa */
2755 if (!zombie) { /* delete only if there are savs */
2756 /* remove from tree of SA index */
2757 if (__LIST_CHAINED(sah))
2758 LIST_REMOVE(sah, chain);
2759 if (sah->route_cache.sa_route.ro_rt) {
2760 RTFREE(sah->route_cache.sa_route.ro_rt);
2761 sah->route_cache.sa_route.ro_rt = (struct rtentry *)NULL;
2763 free(sah, M_IPSEC_SAH);
2768 * allocating a new SA with LARVAL state. key_add() and key_getspi() call,
2769 * and copy the values of mhp into new buffer.
2770 * When SAD message type is GETSPI:
2771 * to set sequence number from acq_seq++,
2772 * to set zero to SPI.
2773 * not to call key_setsava().
2775 * others : pointer to new secasvar.
2777 * does not modify mbuf. does not free mbuf on error.
2779 static struct secasvar *
2780 key_newsav(m, mhp, sah, errp, where, tag)
2782 const struct sadb_msghdr *mhp;
2783 struct secashead *sah;
2788 struct secasvar *newsav;
2789 const struct sadb_sa *xsa;
2791 IPSEC_ASSERT(m != NULL, ("null mbuf"));
2792 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
2793 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
2794 IPSEC_ASSERT(sah != NULL, ("null secashead"));
2796 newsav = malloc(sizeof(struct secasvar), M_IPSEC_SA, M_NOWAIT|M_ZERO);
2797 if (newsav == NULL) {
2798 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
2803 switch (mhp->msg->sadb_msg_type) {
2807 #ifdef IPSEC_DOSEQCHECK
2808 /* sync sequence number */
2809 if (mhp->msg->sadb_msg_seq == 0)
2811 (V_acq_seq = (V_acq_seq == ~0 ? 1 : ++V_acq_seq));
2814 newsav->seq = mhp->msg->sadb_msg_seq;
2819 if (mhp->ext[SADB_EXT_SA] == NULL) {
2820 free(newsav, M_IPSEC_SA);
2822 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
2827 xsa = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA];
2828 newsav->spi = xsa->sadb_sa_spi;
2829 newsav->seq = mhp->msg->sadb_msg_seq;
2832 free(newsav, M_IPSEC_SA);
2839 /* copy sav values */
2840 if (mhp->msg->sadb_msg_type != SADB_GETSPI) {
2841 *errp = key_setsaval(newsav, m, mhp);
2843 free(newsav, M_IPSEC_SA);
2849 SECASVAR_LOCK_INIT(newsav);
2852 newsav->created = time_second;
2853 newsav->pid = mhp->msg->sadb_msg_pid;
2858 newsav->state = SADB_SASTATE_LARVAL;
2861 LIST_INSERT_TAIL(&sah->savtree[SADB_SASTATE_LARVAL], newsav,
2865 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
2866 printf("DP %s from %s:%u return SP:%p\n", __func__,
2867 where, tag, newsav));
2873 * free() SA variable entry.
2876 key_cleansav(struct secasvar *sav)
2879 * Cleanup xform state. Note that zeroize'ing causes the
2880 * keys to be cleared; otherwise we must do it ourself.
2882 if (sav->tdb_xform != NULL) {
2883 sav->tdb_xform->xf_zeroize(sav);
2884 sav->tdb_xform = NULL;
2886 KASSERT(sav->iv == NULL, ("iv but no xform"));
2887 if (sav->key_auth != NULL)
2888 bzero(sav->key_auth->key_data, _KEYLEN(sav->key_auth));
2889 if (sav->key_enc != NULL)
2890 bzero(sav->key_enc->key_data, _KEYLEN(sav->key_enc));
2892 if (sav->key_auth != NULL) {
2893 if (sav->key_auth->key_data != NULL)
2894 free(sav->key_auth->key_data, M_IPSEC_MISC);
2895 free(sav->key_auth, M_IPSEC_MISC);
2896 sav->key_auth = NULL;
2898 if (sav->key_enc != NULL) {
2899 if (sav->key_enc->key_data != NULL)
2900 free(sav->key_enc->key_data, M_IPSEC_MISC);
2901 free(sav->key_enc, M_IPSEC_MISC);
2902 sav->key_enc = NULL;
2905 bzero(sav->sched, sav->schedlen);
2906 free(sav->sched, M_IPSEC_MISC);
2909 if (sav->replay != NULL) {
2910 free(sav->replay, M_IPSEC_MISC);
2913 if (sav->lft_c != NULL) {
2914 free(sav->lft_c, M_IPSEC_MISC);
2917 if (sav->lft_h != NULL) {
2918 free(sav->lft_h, M_IPSEC_MISC);
2921 if (sav->lft_s != NULL) {
2922 free(sav->lft_s, M_IPSEC_MISC);
2928 * free() SA variable entry.
2932 struct secasvar *sav;
2934 IPSEC_ASSERT(sav != NULL, ("null sav"));
2935 IPSEC_ASSERT(sav->refcnt == 0, ("reference count %u > 0", sav->refcnt));
2937 /* remove from SA header */
2938 if (__LIST_CHAINED(sav))
2939 LIST_REMOVE(sav, chain);
2941 SECASVAR_LOCK_DESTROY(sav);
2942 free(sav, M_IPSEC_SA);
2949 * others : found, pointer to a SA.
2951 static struct secashead *
2953 struct secasindex *saidx;
2955 struct secashead *sah;
2958 LIST_FOREACH(sah, &V_sahtree, chain) {
2959 if (sah->state == SADB_SASTATE_DEAD)
2961 if (key_cmpsaidx(&sah->saidx, saidx, CMP_REQID))
2970 * check not to be duplicated SPI.
2971 * NOTE: this function is too slow due to searching all SAD.
2974 * others : found, pointer to a SA.
2976 static struct secasvar *
2977 key_checkspidup(saidx, spi)
2978 struct secasindex *saidx;
2981 struct secashead *sah;
2982 struct secasvar *sav;
2984 /* check address family */
2985 if (saidx->src.sa.sa_family != saidx->dst.sa.sa_family) {
2986 ipseclog((LOG_DEBUG, "%s: address family mismatched.\n",
2994 LIST_FOREACH(sah, &V_sahtree, chain) {
2995 if (!key_ismyaddr((struct sockaddr *)&sah->saidx.dst))
2997 sav = key_getsavbyspi(sah, spi);
3007 * search SAD litmited alive SA, protocol, SPI.
3010 * others : found, pointer to a SA.
3012 static struct secasvar *
3013 key_getsavbyspi(sah, spi)
3014 struct secashead *sah;
3017 struct secasvar *sav;
3018 u_int stateidx, state;
3021 SAHTREE_LOCK_ASSERT();
3022 /* search all status */
3024 stateidx < _ARRAYLEN(saorder_state_alive);
3027 state = saorder_state_alive[stateidx];
3028 LIST_FOREACH(sav, &sah->savtree[state], chain) {
3031 if (sav->state != state) {
3032 ipseclog((LOG_DEBUG, "%s: "
3033 "invalid sav->state (queue: %d SA: %d)\n",
3034 __func__, state, sav->state));
3038 if (sav->spi == spi)
3047 * copy SA values from PF_KEY message except *SPI, SEQ, PID, STATE and TYPE*.
3048 * You must update these if need.
3052 * does not modify mbuf. does not free mbuf on error.
3055 key_setsaval(sav, m, mhp)
3056 struct secasvar *sav;
3058 const struct sadb_msghdr *mhp;
3062 IPSEC_ASSERT(m != NULL, ("null mbuf"));
3063 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
3064 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
3066 /* initialization */
3068 sav->key_auth = NULL;
3069 sav->key_enc = NULL;
3076 sav->tdb_xform = NULL; /* transform */
3077 sav->tdb_encalgxform = NULL; /* encoding algorithm */
3078 sav->tdb_authalgxform = NULL; /* authentication algorithm */
3079 sav->tdb_compalgxform = NULL; /* compression algorithm */
3080 /* Initialize even if NAT-T not compiled in: */
3082 sav->natt_esp_frag_len = 0;
3085 if (mhp->ext[SADB_EXT_SA] != NULL) {
3086 const struct sadb_sa *sa0;
3088 sa0 = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA];
3089 if (mhp->extlen[SADB_EXT_SA] < sizeof(*sa0)) {
3094 sav->alg_auth = sa0->sadb_sa_auth;
3095 sav->alg_enc = sa0->sadb_sa_encrypt;
3096 sav->flags = sa0->sadb_sa_flags;
3099 if ((sa0->sadb_sa_flags & SADB_X_EXT_OLD) == 0) {
3100 sav->replay = (struct secreplay *)
3101 malloc(sizeof(struct secreplay)+sa0->sadb_sa_replay, M_IPSEC_MISC, M_NOWAIT|M_ZERO);
3102 if (sav->replay == NULL) {
3103 ipseclog((LOG_DEBUG, "%s: No more memory.\n",
3108 if (sa0->sadb_sa_replay != 0)
3109 sav->replay->bitmap = (caddr_t)(sav->replay+1);
3110 sav->replay->wsize = sa0->sadb_sa_replay;
3114 /* Authentication keys */
3115 if (mhp->ext[SADB_EXT_KEY_AUTH] != NULL) {
3116 const struct sadb_key *key0;
3119 key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_AUTH];
3120 len = mhp->extlen[SADB_EXT_KEY_AUTH];
3123 if (len < sizeof(*key0)) {
3127 switch (mhp->msg->sadb_msg_satype) {
3128 case SADB_SATYPE_AH:
3129 case SADB_SATYPE_ESP:
3130 case SADB_X_SATYPE_TCPSIGNATURE:
3131 if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
3132 sav->alg_auth != SADB_X_AALG_NULL)
3135 case SADB_X_SATYPE_IPCOMP:
3141 ipseclog((LOG_DEBUG, "%s: invalid key_auth values.\n",
3146 sav->key_auth = (struct seckey *)key_dup_keymsg(key0, len,
3148 if (sav->key_auth == NULL ) {
3149 ipseclog((LOG_DEBUG, "%s: No more memory.\n",
3156 /* Encryption key */
3157 if (mhp->ext[SADB_EXT_KEY_ENCRYPT] != NULL) {
3158 const struct sadb_key *key0;
3161 key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_ENCRYPT];
3162 len = mhp->extlen[SADB_EXT_KEY_ENCRYPT];
3165 if (len < sizeof(*key0)) {
3169 switch (mhp->msg->sadb_msg_satype) {
3170 case SADB_SATYPE_ESP:
3171 if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
3172 sav->alg_enc != SADB_EALG_NULL) {
3176 sav->key_enc = (struct seckey *)key_dup_keymsg(key0,
3179 if (sav->key_enc == NULL) {
3180 ipseclog((LOG_DEBUG, "%s: No more memory.\n",
3186 case SADB_X_SATYPE_IPCOMP:
3187 if (len != PFKEY_ALIGN8(sizeof(struct sadb_key)))
3189 sav->key_enc = NULL; /*just in case*/
3191 case SADB_SATYPE_AH:
3192 case SADB_X_SATYPE_TCPSIGNATURE:
3198 ipseclog((LOG_DEBUG, "%s: invalid key_enc value.\n",
3207 switch (mhp->msg->sadb_msg_satype) {
3208 case SADB_SATYPE_AH:
3209 error = xform_init(sav, XF_AH);
3211 case SADB_SATYPE_ESP:
3212 error = xform_init(sav, XF_ESP);
3214 case SADB_X_SATYPE_IPCOMP:
3215 error = xform_init(sav, XF_IPCOMP);
3217 case SADB_X_SATYPE_TCPSIGNATURE:
3218 error = xform_init(sav, XF_TCPSIGNATURE);
3222 ipseclog((LOG_DEBUG, "%s: unable to initialize SA type %u.\n",
3223 __func__, mhp->msg->sadb_msg_satype));
3228 sav->created = time_second;
3230 /* make lifetime for CURRENT */
3231 sav->lft_c = malloc(sizeof(struct seclifetime), M_IPSEC_MISC, M_NOWAIT);
3232 if (sav->lft_c == NULL) {
3233 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
3238 sav->lft_c->allocations = 0;
3239 sav->lft_c->bytes = 0;
3240 sav->lft_c->addtime = time_second;
3241 sav->lft_c->usetime = 0;
3243 /* lifetimes for HARD and SOFT */
3245 const struct sadb_lifetime *lft0;
3247 lft0 = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_HARD];
3249 if (mhp->extlen[SADB_EXT_LIFETIME_HARD] < sizeof(*lft0)) {
3253 sav->lft_h = key_dup_lifemsg(lft0, M_IPSEC_MISC);
3254 if (sav->lft_h == NULL) {
3255 ipseclog((LOG_DEBUG, "%s: No more memory.\n",__func__));
3259 /* to be initialize ? */
3262 lft0 = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_SOFT];
3264 if (mhp->extlen[SADB_EXT_LIFETIME_SOFT] < sizeof(*lft0)) {
3268 sav->lft_s = key_dup_lifemsg(lft0, M_IPSEC_MISC);
3269 if (sav->lft_s == NULL) {
3270 ipseclog((LOG_DEBUG, "%s: No more memory.\n",__func__));
3274 /* to be initialize ? */
3281 /* initialization */
3288 * validation with a secasvar entry, and set SADB_SATYPE_MATURE.
3293 key_mature(struct secasvar *sav)
3297 /* check SPI value */
3298 switch (sav->sah->saidx.proto) {
3302 * RFC 4302, 2.4. Security Parameters Index (SPI), SPI values
3303 * 1-255 reserved by IANA for future use,
3304 * 0 for implementation specific, local use.
3306 if (ntohl(sav->spi) <= 255) {
3307 ipseclog((LOG_DEBUG, "%s: illegal range of SPI %u.\n",
3308 __func__, (u_int32_t)ntohl(sav->spi)));
3315 switch (sav->sah->saidx.proto) {
3318 if ((sav->flags & (SADB_X_EXT_OLD|SADB_X_EXT_DERIV)) ==
3319 (SADB_X_EXT_OLD|SADB_X_EXT_DERIV)) {
3320 ipseclog((LOG_DEBUG, "%s: invalid flag (derived) "
3321 "given to old-esp.\n", __func__));
3324 error = xform_init(sav, XF_ESP);
3328 if (sav->flags & SADB_X_EXT_DERIV) {
3329 ipseclog((LOG_DEBUG, "%s: invalid flag (derived) "
3330 "given to AH SA.\n", __func__));
3333 if (sav->alg_enc != SADB_EALG_NONE) {
3334 ipseclog((LOG_DEBUG, "%s: protocol and algorithm "
3335 "mismated.\n", __func__));
3338 error = xform_init(sav, XF_AH);
3340 case IPPROTO_IPCOMP:
3341 if (sav->alg_auth != SADB_AALG_NONE) {
3342 ipseclog((LOG_DEBUG, "%s: protocol and algorithm "
3343 "mismated.\n", __func__));
3346 if ((sav->flags & SADB_X_EXT_RAWCPI) == 0
3347 && ntohl(sav->spi) >= 0x10000) {
3348 ipseclog((LOG_DEBUG, "%s: invalid cpi for IPComp.\n",
3352 error = xform_init(sav, XF_IPCOMP);
3355 if (sav->alg_enc != SADB_EALG_NONE) {
3356 ipseclog((LOG_DEBUG, "%s: protocol and algorithm "
3357 "mismated.\n", __func__));
3360 error = xform_init(sav, XF_TCPSIGNATURE);
3363 ipseclog((LOG_DEBUG, "%s: Invalid satype.\n", __func__));
3364 error = EPROTONOSUPPORT;
3369 key_sa_chgstate(sav, SADB_SASTATE_MATURE);
3376 * subroutine for SADB_GET and SADB_DUMP.
3378 static struct mbuf *
3379 key_setdumpsa(struct secasvar *sav, u_int8_t type, u_int8_t satype,
3380 u_int32_t seq, u_int32_t pid)
3382 struct mbuf *result = NULL, *tres = NULL, *m;
3385 SADB_EXT_SA, SADB_X_EXT_SA2,
3386 SADB_EXT_LIFETIME_HARD, SADB_EXT_LIFETIME_SOFT,
3387 SADB_EXT_LIFETIME_CURRENT, SADB_EXT_ADDRESS_SRC,
3388 SADB_EXT_ADDRESS_DST, SADB_EXT_ADDRESS_PROXY, SADB_EXT_KEY_AUTH,
3389 SADB_EXT_KEY_ENCRYPT, SADB_EXT_IDENTITY_SRC,
3390 SADB_EXT_IDENTITY_DST, SADB_EXT_SENSITIVITY,
3392 SADB_X_EXT_NAT_T_TYPE,
3393 SADB_X_EXT_NAT_T_SPORT, SADB_X_EXT_NAT_T_DPORT,
3394 SADB_X_EXT_NAT_T_OAI, SADB_X_EXT_NAT_T_OAR,
3395 SADB_X_EXT_NAT_T_FRAG,
3399 m = key_setsadbmsg(type, 0, satype, seq, pid, sav->refcnt);
3404 for (i = sizeof(dumporder)/sizeof(dumporder[0]) - 1; i >= 0; i--) {
3406 switch (dumporder[i]) {
3408 m = key_setsadbsa(sav);
3413 case SADB_X_EXT_SA2:
3414 m = key_setsadbxsa2(sav->sah->saidx.mode,
3415 sav->replay ? sav->replay->count : 0,
3416 sav->sah->saidx.reqid);
3421 case SADB_EXT_ADDRESS_SRC:
3422 m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
3423 &sav->sah->saidx.src.sa,
3424 FULLMASK, IPSEC_ULPROTO_ANY);
3429 case SADB_EXT_ADDRESS_DST:
3430 m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
3431 &sav->sah->saidx.dst.sa,
3432 FULLMASK, IPSEC_ULPROTO_ANY);
3437 case SADB_EXT_KEY_AUTH:
3440 m = key_setkey(sav->key_auth, SADB_EXT_KEY_AUTH);
3445 case SADB_EXT_KEY_ENCRYPT:
3448 m = key_setkey(sav->key_enc, SADB_EXT_KEY_ENCRYPT);
3453 case SADB_EXT_LIFETIME_CURRENT:
3456 m = key_setlifetime(sav->lft_c,
3457 SADB_EXT_LIFETIME_CURRENT);
3462 case SADB_EXT_LIFETIME_HARD:
3465 m = key_setlifetime(sav->lft_h,
3466 SADB_EXT_LIFETIME_HARD);
3471 case SADB_EXT_LIFETIME_SOFT:
3474 m = key_setlifetime(sav->lft_s,
3475 SADB_EXT_LIFETIME_SOFT);
3482 case SADB_X_EXT_NAT_T_TYPE:
3483 m = key_setsadbxtype(sav->natt_type);
3488 case SADB_X_EXT_NAT_T_DPORT:
3489 m = key_setsadbxport(
3490 KEY_PORTFROMSADDR(&sav->sah->saidx.dst),
3491 SADB_X_EXT_NAT_T_DPORT);
3496 case SADB_X_EXT_NAT_T_SPORT:
3497 m = key_setsadbxport(
3498 KEY_PORTFROMSADDR(&sav->sah->saidx.src),
3499 SADB_X_EXT_NAT_T_SPORT);
3504 case SADB_X_EXT_NAT_T_OAI:
3505 case SADB_X_EXT_NAT_T_OAR:
3506 case SADB_X_EXT_NAT_T_FRAG:
3507 /* We do not (yet) support those. */
3511 case SADB_EXT_ADDRESS_PROXY:
3512 case SADB_EXT_IDENTITY_SRC:
3513 case SADB_EXT_IDENTITY_DST:
3514 /* XXX: should we brought from SPD ? */
3515 case SADB_EXT_SENSITIVITY:
3528 m_cat(result, tres);
3529 if (result->m_len < sizeof(struct sadb_msg)) {
3530 result = m_pullup(result, sizeof(struct sadb_msg));
3535 result->m_pkthdr.len = 0;
3536 for (m = result; m; m = m->m_next)
3537 result->m_pkthdr.len += m->m_len;
3539 mtod(result, struct sadb_msg *)->sadb_msg_len =
3540 PFKEY_UNIT64(result->m_pkthdr.len);
3551 * set data into sadb_msg.
3553 static struct mbuf *
3554 key_setsadbmsg(u_int8_t type, u_int16_t tlen, u_int8_t satype, u_int32_t seq,
3555 pid_t pid, u_int16_t reserved)
3561 len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
3564 MGETHDR(m, M_DONTWAIT, MT_DATA);
3565 if (m && len > MHLEN) {
3566 MCLGET(m, M_DONTWAIT);
3567 if ((m->m_flags & M_EXT) == 0) {
3574 m->m_pkthdr.len = m->m_len = len;
3577 p = mtod(m, struct sadb_msg *);
3580 p->sadb_msg_version = PF_KEY_V2;
3581 p->sadb_msg_type = type;
3582 p->sadb_msg_errno = 0;
3583 p->sadb_msg_satype = satype;
3584 p->sadb_msg_len = PFKEY_UNIT64(tlen);
3585 p->sadb_msg_reserved = reserved;
3586 p->sadb_msg_seq = seq;
3587 p->sadb_msg_pid = (u_int32_t)pid;
3593 * copy secasvar data into sadb_address.
3595 static struct mbuf *
3597 struct secasvar *sav;
3603 len = PFKEY_ALIGN8(sizeof(struct sadb_sa));
3604 m = key_alloc_mbuf(len);
3605 if (!m || m->m_next) { /*XXX*/
3611 p = mtod(m, struct sadb_sa *);
3614 p->sadb_sa_len = PFKEY_UNIT64(len);
3615 p->sadb_sa_exttype = SADB_EXT_SA;
3616 p->sadb_sa_spi = sav->spi;
3617 p->sadb_sa_replay = (sav->replay != NULL ? sav->replay->wsize : 0);
3618 p->sadb_sa_state = sav->state;
3619 p->sadb_sa_auth = sav->alg_auth;
3620 p->sadb_sa_encrypt = sav->alg_enc;
3621 p->sadb_sa_flags = sav->flags;
3627 * set data into sadb_address.
3629 static struct mbuf *
3630 key_setsadbaddr(u_int16_t exttype, const struct sockaddr *saddr, u_int8_t prefixlen, u_int16_t ul_proto)
3633 struct sadb_address *p;
3636 len = PFKEY_ALIGN8(sizeof(struct sadb_address)) +
3637 PFKEY_ALIGN8(saddr->sa_len);
3638 m = key_alloc_mbuf(len);
3639 if (!m || m->m_next) { /*XXX*/
3645 p = mtod(m, struct sadb_address *);
3648 p->sadb_address_len = PFKEY_UNIT64(len);
3649 p->sadb_address_exttype = exttype;
3650 p->sadb_address_proto = ul_proto;
3651 if (prefixlen == FULLMASK) {
3652 switch (saddr->sa_family) {
3654 prefixlen = sizeof(struct in_addr) << 3;
3657 prefixlen = sizeof(struct in6_addr) << 3;
3663 p->sadb_address_prefixlen = prefixlen;
3664 p->sadb_address_reserved = 0;
3667 mtod(m, caddr_t) + PFKEY_ALIGN8(sizeof(struct sadb_address)),
3674 * set data into sadb_x_sa2.
3676 static struct mbuf *
3677 key_setsadbxsa2(u_int8_t mode, u_int32_t seq, u_int32_t reqid)
3680 struct sadb_x_sa2 *p;
3683 len = PFKEY_ALIGN8(sizeof(struct sadb_x_sa2));
3684 m = key_alloc_mbuf(len);
3685 if (!m || m->m_next) { /*XXX*/
3691 p = mtod(m, struct sadb_x_sa2 *);
3694 p->sadb_x_sa2_len = PFKEY_UNIT64(len);
3695 p->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
3696 p->sadb_x_sa2_mode = mode;
3697 p->sadb_x_sa2_reserved1 = 0;
3698 p->sadb_x_sa2_reserved2 = 0;
3699 p->sadb_x_sa2_sequence = seq;
3700 p->sadb_x_sa2_reqid = reqid;
3707 * Set a type in sadb_x_nat_t_type.
3709 static struct mbuf *
3710 key_setsadbxtype(u_int16_t type)
3714 struct sadb_x_nat_t_type *p;
3716 len = PFKEY_ALIGN8(sizeof(struct sadb_x_nat_t_type));
3718 m = key_alloc_mbuf(len);
3719 if (!m || m->m_next) { /*XXX*/
3725 p = mtod(m, struct sadb_x_nat_t_type *);
3728 p->sadb_x_nat_t_type_len = PFKEY_UNIT64(len);
3729 p->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE;
3730 p->sadb_x_nat_t_type_type = type;
3735 * Set a port in sadb_x_nat_t_port.
3736 * In contrast to default RFC 2367 behaviour, port is in network byte order.
3738 static struct mbuf *
3739 key_setsadbxport(u_int16_t port, u_int16_t type)
3743 struct sadb_x_nat_t_port *p;
3745 len = PFKEY_ALIGN8(sizeof(struct sadb_x_nat_t_port));
3747 m = key_alloc_mbuf(len);
3748 if (!m || m->m_next) { /*XXX*/
3754 p = mtod(m, struct sadb_x_nat_t_port *);
3757 p->sadb_x_nat_t_port_len = PFKEY_UNIT64(len);
3758 p->sadb_x_nat_t_port_exttype = type;
3759 p->sadb_x_nat_t_port_port = port;
3765 * Get port from sockaddr. Port is in network byte order.
3768 key_portfromsaddr(struct sockaddr *sa)
3771 switch (sa->sa_family) {
3774 return ((struct sockaddr_in *)sa)->sin_port;
3778 return ((struct sockaddr_in6 *)sa)->sin6_port;
3781 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
3782 printf("DP %s unexpected address family %d\n",
3783 __func__, sa->sa_family));
3786 #endif /* IPSEC_NAT_T */
3789 * Set port in struct sockaddr. Port is in network byte order.
3792 key_porttosaddr(struct sockaddr *sa, u_int16_t port)
3795 switch (sa->sa_family) {
3798 ((struct sockaddr_in *)sa)->sin_port = port;
3803 ((struct sockaddr_in6 *)sa)->sin6_port = port;
3807 ipseclog((LOG_DEBUG, "%s: unexpected address family %d.\n",
3808 __func__, sa->sa_family));
3814 * set data into sadb_x_policy
3816 static struct mbuf *
3817 key_setsadbxpolicy(u_int16_t type, u_int8_t dir, u_int32_t id)
3820 struct sadb_x_policy *p;
3823 len = PFKEY_ALIGN8(sizeof(struct sadb_x_policy));
3824 m = key_alloc_mbuf(len);
3825 if (!m || m->m_next) { /*XXX*/
3831 p = mtod(m, struct sadb_x_policy *);
3834 p->sadb_x_policy_len = PFKEY_UNIT64(len);
3835 p->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
3836 p->sadb_x_policy_type = type;
3837 p->sadb_x_policy_dir = dir;
3838 p->sadb_x_policy_id = id;
3844 /* Take a key message (sadb_key) from the socket and turn it into one
3845 * of the kernel's key structures (seckey).
3847 * IN: pointer to the src
3848 * OUT: NULL no more memory
3851 key_dup_keymsg(const struct sadb_key *src, u_int len,
3852 struct malloc_type *type)
3855 dst = (struct seckey *)malloc(sizeof(struct seckey), type, M_NOWAIT);
3857 dst->bits = src->sadb_key_bits;
3858 dst->key_data = (char *)malloc(len, type, M_NOWAIT);
3859 if (dst->key_data != NULL) {
3860 bcopy((const char *)src + sizeof(struct sadb_key),
3861 dst->key_data, len);
3863 ipseclog((LOG_DEBUG, "%s: No more memory.\n",
3869 ipseclog((LOG_DEBUG, "%s: No more memory.\n",
3876 /* Take a lifetime message (sadb_lifetime) passed in on a socket and
3877 * turn it into one of the kernel's lifetime structures (seclifetime).
3879 * IN: pointer to the destination, source and malloc type
3880 * OUT: NULL, no more memory
3883 static struct seclifetime *
3884 key_dup_lifemsg(const struct sadb_lifetime *src,
3885 struct malloc_type *type)
3887 struct seclifetime *dst = NULL;
3889 dst = (struct seclifetime *)malloc(sizeof(struct seclifetime),
3893 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
3895 dst->allocations = src->sadb_lifetime_allocations;
3896 dst->bytes = src->sadb_lifetime_bytes;
3897 dst->addtime = src->sadb_lifetime_addtime;
3898 dst->usetime = src->sadb_lifetime_usetime;
3903 /* compare my own address
3904 * OUT: 1: true, i.e. my address.
3909 struct sockaddr *sa;
3912 struct sockaddr_in *sin;
3913 struct in_ifaddr *ia;
3916 IPSEC_ASSERT(sa != NULL, ("null sockaddr"));
3918 switch (sa->sa_family) {
3921 sin = (struct sockaddr_in *)sa;
3923 for (ia = V_in_ifaddrhead.tqh_first; ia;
3924 ia = ia->ia_link.tqe_next)
3926 if (sin->sin_family == ia->ia_addr.sin_family &&
3927 sin->sin_len == ia->ia_addr.sin_len &&
3928 sin->sin_addr.s_addr == ia->ia_addr.sin_addr.s_addr)
3930 IN_IFADDR_RUNLOCK();
3934 IN_IFADDR_RUNLOCK();
3939 return key_ismyaddr6((struct sockaddr_in6 *)sa);
3948 * compare my own address for IPv6.
3951 * NOTE: derived ip6_input() in KAME. This is necessary to modify more.
3953 #include <netinet6/in6_var.h>
3957 struct sockaddr_in6 *sin6;
3959 struct in6_ifaddr *ia;
3961 struct in6_multi *in6m;
3965 TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) {
3966 if (key_sockaddrcmp((struct sockaddr *)&sin6,
3967 (struct sockaddr *)&ia->ia_addr, 0) == 0) {
3968 IN6_IFADDR_RUNLOCK();
3975 * XXX why do we care about multlicast here while we don't care
3976 * about IPv4 multicast??
3980 IN6_LOOKUP_MULTI(sin6->sin6_addr, ia->ia_ifp, in6m);
3982 IN6_IFADDR_RUNLOCK();
3987 IN6_IFADDR_RUNLOCK();
3989 /* loopback, just for safety */
3990 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))
3998 * compare two secasindex structure.
3999 * flag can specify to compare 2 saidxes.
4000 * compare two secasindex structure without both mode and reqid.
4001 * don't compare port.
4003 * saidx0: source, it can be in SAD.
4011 const struct secasindex *saidx0,
4012 const struct secasindex *saidx1,
4018 if (saidx0 == NULL && saidx1 == NULL)
4021 if (saidx0 == NULL || saidx1 == NULL)
4024 if (saidx0->proto != saidx1->proto)
4027 if (flag == CMP_EXACTLY) {
4028 if (saidx0->mode != saidx1->mode)
4030 if (saidx0->reqid != saidx1->reqid)
4032 if (bcmp(&saidx0->src, &saidx1->src, saidx0->src.sa.sa_len) != 0 ||
4033 bcmp(&saidx0->dst, &saidx1->dst, saidx0->dst.sa.sa_len) != 0)
4037 /* CMP_MODE_REQID, CMP_REQID, CMP_HEAD */
4038 if (flag == CMP_MODE_REQID
4039 ||flag == CMP_REQID) {
4041 * If reqid of SPD is non-zero, unique SA is required.
4042 * The result must be of same reqid in this case.
4044 if (saidx1->reqid != 0 && saidx0->reqid != saidx1->reqid)
4048 if (flag == CMP_MODE_REQID) {
4049 if (saidx0->mode != IPSEC_MODE_ANY
4050 && saidx0->mode != saidx1->mode)
4056 * If NAT-T is enabled, check ports for tunnel mode.
4057 * Do not check ports if they are set to zero in the SPD.
4058 * Also do not do it for transport mode, as there is no
4059 * port information available in the SP.
4061 if (saidx1->mode == IPSEC_MODE_TUNNEL &&
4062 saidx1->src.sa.sa_family == AF_INET &&
4063 saidx1->dst.sa.sa_family == AF_INET &&
4064 ((const struct sockaddr_in *)(&saidx1->src))->sin_port &&
4065 ((const struct sockaddr_in *)(&saidx1->dst))->sin_port)
4067 #endif /* IPSEC_NAT_T */
4069 if (key_sockaddrcmp(&saidx0->src.sa, &saidx1->src.sa, chkport) != 0) {
4072 if (key_sockaddrcmp(&saidx0->dst.sa, &saidx1->dst.sa, chkport) != 0) {
4081 * compare two secindex structure exactly.
4083 * spidx0: source, it is often in SPD.
4084 * spidx1: object, it is often from PFKEY message.
4090 key_cmpspidx_exactly(
4091 struct secpolicyindex *spidx0,
4092 struct secpolicyindex *spidx1)
4095 if (spidx0 == NULL && spidx1 == NULL)
4098 if (spidx0 == NULL || spidx1 == NULL)
4101 if (spidx0->prefs != spidx1->prefs
4102 || spidx0->prefd != spidx1->prefd
4103 || spidx0->ul_proto != spidx1->ul_proto)
4106 return key_sockaddrcmp(&spidx0->src.sa, &spidx1->src.sa, 1) == 0 &&
4107 key_sockaddrcmp(&spidx0->dst.sa, &spidx1->dst.sa, 1) == 0;
4111 * compare two secindex structure with mask.
4113 * spidx0: source, it is often in SPD.
4114 * spidx1: object, it is often from IP header.
4120 key_cmpspidx_withmask(
4121 struct secpolicyindex *spidx0,
4122 struct secpolicyindex *spidx1)
4125 if (spidx0 == NULL && spidx1 == NULL)
4128 if (spidx0 == NULL || spidx1 == NULL)
4131 if (spidx0->src.sa.sa_family != spidx1->src.sa.sa_family ||
4132 spidx0->dst.sa.sa_family != spidx1->dst.sa.sa_family ||
4133 spidx0->src.sa.sa_len != spidx1->src.sa.sa_len ||
4134 spidx0->dst.sa.sa_len != spidx1->dst.sa.sa_len)
4137 /* if spidx.ul_proto == IPSEC_ULPROTO_ANY, ignore. */
4138 if (spidx0->ul_proto != (u_int16_t)IPSEC_ULPROTO_ANY
4139 && spidx0->ul_proto != spidx1->ul_proto)
4142 switch (spidx0->src.sa.sa_family) {
4144 if (spidx0->src.sin.sin_port != IPSEC_PORT_ANY
4145 && spidx0->src.sin.sin_port != spidx1->src.sin.sin_port)
4147 if (!key_bbcmp(&spidx0->src.sin.sin_addr,
4148 &spidx1->src.sin.sin_addr, spidx0->prefs))
4152 if (spidx0->src.sin6.sin6_port != IPSEC_PORT_ANY
4153 && spidx0->src.sin6.sin6_port != spidx1->src.sin6.sin6_port)
4156 * scope_id check. if sin6_scope_id is 0, we regard it
4157 * as a wildcard scope, which matches any scope zone ID.
4159 if (spidx0->src.sin6.sin6_scope_id &&
4160 spidx1->src.sin6.sin6_scope_id &&
4161 spidx0->src.sin6.sin6_scope_id != spidx1->src.sin6.sin6_scope_id)
4163 if (!key_bbcmp(&spidx0->src.sin6.sin6_addr,
4164 &spidx1->src.sin6.sin6_addr, spidx0->prefs))
4169 if (bcmp(&spidx0->src, &spidx1->src, spidx0->src.sa.sa_len) != 0)
4174 switch (spidx0->dst.sa.sa_family) {
4176 if (spidx0->dst.sin.sin_port != IPSEC_PORT_ANY
4177 && spidx0->dst.sin.sin_port != spidx1->dst.sin.sin_port)
4179 if (!key_bbcmp(&spidx0->dst.sin.sin_addr,
4180 &spidx1->dst.sin.sin_addr, spidx0->prefd))
4184 if (spidx0->dst.sin6.sin6_port != IPSEC_PORT_ANY
4185 && spidx0->dst.sin6.sin6_port != spidx1->dst.sin6.sin6_port)
4188 * scope_id check. if sin6_scope_id is 0, we regard it
4189 * as a wildcard scope, which matches any scope zone ID.
4191 if (spidx0->dst.sin6.sin6_scope_id &&
4192 spidx1->dst.sin6.sin6_scope_id &&
4193 spidx0->dst.sin6.sin6_scope_id != spidx1->dst.sin6.sin6_scope_id)
4195 if (!key_bbcmp(&spidx0->dst.sin6.sin6_addr,
4196 &spidx1->dst.sin6.sin6_addr, spidx0->prefd))
4201 if (bcmp(&spidx0->dst, &spidx1->dst, spidx0->dst.sa.sa_len) != 0)
4206 /* XXX Do we check other field ? e.g. flowinfo */
4211 /* returns 0 on match */
4214 const struct sockaddr *sa1,
4215 const struct sockaddr *sa2,
4221 #define satosin(s) ((const struct sockaddr_in *)s)
4225 #define satosin6(s) ((const struct sockaddr_in6 *)s)
4226 if (sa1->sa_family != sa2->sa_family || sa1->sa_len != sa2->sa_len)
4229 switch (sa1->sa_family) {
4231 if (sa1->sa_len != sizeof(struct sockaddr_in))
4233 if (satosin(sa1)->sin_addr.s_addr !=
4234 satosin(sa2)->sin_addr.s_addr) {
4237 if (port && satosin(sa1)->sin_port != satosin(sa2)->sin_port)
4241 if (sa1->sa_len != sizeof(struct sockaddr_in6))
4242 return 1; /*EINVAL*/
4243 if (satosin6(sa1)->sin6_scope_id !=
4244 satosin6(sa2)->sin6_scope_id) {
4247 if (!IN6_ARE_ADDR_EQUAL(&satosin6(sa1)->sin6_addr,
4248 &satosin6(sa2)->sin6_addr)) {
4252 satosin6(sa1)->sin6_port != satosin6(sa2)->sin6_port) {
4257 if (bcmp(sa1, sa2, sa1->sa_len) != 0)
4268 * compare two buffers with mask.
4272 * bits: Number of bits to compare
4278 key_bbcmp(const void *a1, const void *a2, u_int bits)
4280 const unsigned char *p1 = a1;
4281 const unsigned char *p2 = a2;
4283 /* XXX: This could be considerably faster if we compare a word
4284 * at a time, but it is complicated on LSB Endian machines */
4286 /* Handle null pointers */
4287 if (p1 == NULL || p2 == NULL)
4297 u_int8_t mask = ~((1<<(8-bits))-1);
4298 if ((*p1 & mask) != (*p2 & mask))
4301 return 1; /* Match! */
4305 key_flush_spd(time_t now)
4307 static u_int16_t sptree_scangen = 0;
4308 u_int16_t gen = sptree_scangen++;
4309 struct secpolicy *sp;
4313 for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
4316 LIST_FOREACH(sp, &V_sptree[dir], chain) {
4317 if (sp->scangen == gen) /* previously handled */
4320 if (sp->state == IPSEC_SPSTATE_DEAD &&
4323 * Ensure that we only decrease refcnt once,
4324 * when we're the last consumer.
4325 * Directly call SP_DELREF/key_delsp instead
4326 * of KEY_FREESP to avoid unlocking/relocking
4327 * SPTREE_LOCK before key_delsp: may refcnt
4328 * be increased again during that time ?
4329 * NB: also clean entries created by
4337 if (sp->lifetime == 0 && sp->validtime == 0)
4339 if ((sp->lifetime && now - sp->created > sp->lifetime)
4340 || (sp->validtime && now - sp->lastused > sp->validtime)) {
4341 sp->state = IPSEC_SPSTATE_DEAD;
4352 key_flush_sad(time_t now)
4354 struct secashead *sah, *nextsah;
4355 struct secasvar *sav, *nextsav;
4359 LIST_FOREACH_SAFE(sah, &V_sahtree, chain, nextsah) {
4360 /* if sah has been dead, then delete it and process next sah. */
4361 if (sah->state == SADB_SASTATE_DEAD) {
4366 /* if LARVAL entry doesn't become MATURE, delete it. */
4367 LIST_FOREACH_SAFE(sav, &sah->savtree[SADB_SASTATE_LARVAL], chain, nextsav) {
4368 /* Need to also check refcnt for a larval SA ??? */
4369 if (now - sav->created > V_key_larval_lifetime)
4374 * check MATURE entry to start to send expire message
4377 LIST_FOREACH_SAFE(sav, &sah->savtree[SADB_SASTATE_MATURE], chain, nextsav) {
4378 /* we don't need to check. */
4379 if (sav->lft_s == NULL)
4383 if (sav->lft_c == NULL) {
4384 ipseclog((LOG_DEBUG,"%s: there is no CURRENT "
4385 "time, why?\n", __func__));
4389 /* check SOFT lifetime */
4390 if (sav->lft_s->addtime != 0 &&
4391 now - sav->created > sav->lft_s->addtime) {
4392 key_sa_chgstate(sav, SADB_SASTATE_DYING);
4394 * Actually, only send expire message if
4395 * SA has been used, as it was done before,
4396 * but should we always send such message,
4397 * and let IKE daemon decide if it should be
4398 * renegotiated or not ?
4399 * XXX expire message will actually NOT be
4400 * sent if SA is only used after soft
4401 * lifetime has been reached, see below
4404 if (sav->lft_c->usetime != 0)
4407 /* check SOFT lifetime by bytes */
4409 * XXX I don't know the way to delete this SA
4410 * when new SA is installed. Caution when it's
4411 * installed too big lifetime by time.
4413 else if (sav->lft_s->bytes != 0 &&
4414 sav->lft_s->bytes < sav->lft_c->bytes) {
4416 key_sa_chgstate(sav, SADB_SASTATE_DYING);
4418 * XXX If we keep to send expire
4419 * message in the status of
4420 * DYING. Do remove below code.
4426 /* check DYING entry to change status to DEAD. */
4427 LIST_FOREACH_SAFE(sav, &sah->savtree[SADB_SASTATE_DYING], chain, nextsav) {
4428 /* we don't need to check. */
4429 if (sav->lft_h == NULL)
4433 if (sav->lft_c == NULL) {
4434 ipseclog((LOG_DEBUG, "%s: there is no CURRENT "
4435 "time, why?\n", __func__));
4439 if (sav->lft_h->addtime != 0 &&
4440 now - sav->created > sav->lft_h->addtime) {
4441 key_sa_chgstate(sav, SADB_SASTATE_DEAD);
4444 #if 0 /* XXX Should we keep to send expire message until HARD lifetime ? */
4445 else if (sav->lft_s != NULL
4446 && sav->lft_s->addtime != 0
4447 && now - sav->created > sav->lft_s->addtime) {
4449 * XXX: should be checked to be
4450 * installed the valid SA.
4454 * If there is no SA then sending
4460 /* check HARD lifetime by bytes */
4461 else if (sav->lft_h->bytes != 0 &&
4462 sav->lft_h->bytes < sav->lft_c->bytes) {
4463 key_sa_chgstate(sav, SADB_SASTATE_DEAD);
4468 /* delete entry in DEAD */
4469 LIST_FOREACH_SAFE(sav, &sah->savtree[SADB_SASTATE_DEAD], chain, nextsav) {
4471 if (sav->state != SADB_SASTATE_DEAD) {
4472 ipseclog((LOG_DEBUG, "%s: invalid sav->state "
4473 "(queue: %d SA: %d): kill it anyway\n",
4475 SADB_SASTATE_DEAD, sav->state));
4478 * do not call key_freesav() here.
4479 * sav should already be freed, and sav->refcnt
4480 * shows other references to sav
4481 * (such as from SPD).
4489 key_flush_acq(time_t now)
4491 struct secacq *acq, *nextacq;
4495 for (acq = LIST_FIRST(&V_acqtree); acq != NULL; acq = nextacq) {
4496 nextacq = LIST_NEXT(acq, chain);
4497 if (now - acq->created > V_key_blockacq_lifetime
4498 && __LIST_CHAINED(acq)) {
4499 LIST_REMOVE(acq, chain);
4500 free(acq, M_IPSEC_SAQ);
4507 key_flush_spacq(time_t now)
4509 struct secspacq *acq, *nextacq;
4513 for (acq = LIST_FIRST(&V_spacqtree); acq != NULL; acq = nextacq) {
4514 nextacq = LIST_NEXT(acq, chain);
4515 if (now - acq->created > V_key_blockacq_lifetime
4516 && __LIST_CHAINED(acq)) {
4517 LIST_REMOVE(acq, chain);
4518 free(acq, M_IPSEC_SAQ);
4526 * scanning SPD and SAD to check status for each entries,
4527 * and do to remove or to expire.
4528 * XXX: year 2038 problem may remain.
4531 key_timehandler(void)
4533 VNET_ITERATOR_DECL(vnet_iter);
4534 time_t now = time_second;
4536 VNET_LIST_RLOCK_NOSLEEP();
4537 VNET_FOREACH(vnet_iter) {
4538 CURVNET_SET(vnet_iter);
4542 key_flush_spacq(now);
4545 VNET_LIST_RUNLOCK_NOSLEEP();
4547 #ifndef IPSEC_DEBUG2
4548 /* do exchange to tick time !! */
4549 (void)timeout((void *)key_timehandler, (void *)0, hz);
4550 #endif /* IPSEC_DEBUG2 */
4558 key_randomfill(&value, sizeof(value));
4563 key_randomfill(p, l)
4569 static int warn = 1;
4572 n = (size_t)read_random(p, (u_int)l);
4576 bcopy(&v, (u_int8_t *)p + n,
4577 l - n < sizeof(v) ? l - n : sizeof(v));
4581 printf("WARNING: pseudo-random number generator "
4582 "used for IPsec processing\n");
4589 * map SADB_SATYPE_* to IPPROTO_*.
4590 * if satype == SADB_SATYPE then satype is mapped to ~0.
4592 * 0: invalid satype.
4595 key_satype2proto(u_int8_t satype)
4598 case SADB_SATYPE_UNSPEC:
4599 return IPSEC_PROTO_ANY;
4600 case SADB_SATYPE_AH:
4602 case SADB_SATYPE_ESP:
4604 case SADB_X_SATYPE_IPCOMP:
4605 return IPPROTO_IPCOMP;
4606 case SADB_X_SATYPE_TCPSIGNATURE:
4615 * map IPPROTO_* to SADB_SATYPE_*
4617 * 0: invalid protocol type.
4620 key_proto2satype(u_int16_t proto)
4624 return SADB_SATYPE_AH;
4626 return SADB_SATYPE_ESP;
4627 case IPPROTO_IPCOMP:
4628 return SADB_X_SATYPE_IPCOMP;
4630 return SADB_X_SATYPE_TCPSIGNATURE;
4639 * SADB_GETSPI processing is to receive
4640 * <base, (SA2), src address, dst address, (SPI range)>
4641 * from the IKMPd, to assign a unique spi value, to hang on the INBOUND
4642 * tree with the status of LARVAL, and send
4643 * <base, SA(*), address(SD)>
4646 * IN: mhp: pointer to the pointer to each header.
4647 * OUT: NULL if fail.
4648 * other if success, return pointer to the message to send.
4651 key_getspi(so, m, mhp)
4654 const struct sadb_msghdr *mhp;
4656 struct sadb_address *src0, *dst0;
4657 struct secasindex saidx;
4658 struct secashead *newsah;
4659 struct secasvar *newsav;
4666 IPSEC_ASSERT(so != NULL, ("null socket"));
4667 IPSEC_ASSERT(m != NULL, ("null mbuf"));
4668 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
4669 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
4671 if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
4672 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
4673 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
4675 return key_senderror(so, m, EINVAL);
4677 if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
4678 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
4679 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
4681 return key_senderror(so, m, EINVAL);
4683 if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
4684 mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
4685 reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
4687 mode = IPSEC_MODE_ANY;
4691 src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
4692 dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
4694 /* map satype to proto */
4695 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
4696 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
4698 return key_senderror(so, m, EINVAL);
4702 * Make sure the port numbers are zero.
4703 * In case of NAT-T we will update them later if needed.
4705 switch (((struct sockaddr *)(src0 + 1))->sa_family) {
4707 if (((struct sockaddr *)(src0 + 1))->sa_len !=
4708 sizeof(struct sockaddr_in))
4709 return key_senderror(so, m, EINVAL);
4710 ((struct sockaddr_in *)(src0 + 1))->sin_port = 0;
4713 if (((struct sockaddr *)(src0 + 1))->sa_len !=
4714 sizeof(struct sockaddr_in6))
4715 return key_senderror(so, m, EINVAL);
4716 ((struct sockaddr_in6 *)(src0 + 1))->sin6_port = 0;
4721 switch (((struct sockaddr *)(dst0 + 1))->sa_family) {
4723 if (((struct sockaddr *)(dst0 + 1))->sa_len !=
4724 sizeof(struct sockaddr_in))
4725 return key_senderror(so, m, EINVAL);
4726 ((struct sockaddr_in *)(dst0 + 1))->sin_port = 0;
4729 if (((struct sockaddr *)(dst0 + 1))->sa_len !=
4730 sizeof(struct sockaddr_in6))
4731 return key_senderror(so, m, EINVAL);
4732 ((struct sockaddr_in6 *)(dst0 + 1))->sin6_port = 0;
4738 /* XXX boundary check against sa_len */
4739 KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
4743 * Handle NAT-T info if present.
4744 * We made sure the port numbers are zero above, so we do
4745 * not have to worry in case we do not update them.
4747 if (mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL)
4748 ipseclog((LOG_DEBUG, "%s: NAT-T OAi present\n", __func__));
4749 if (mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL)
4750 ipseclog((LOG_DEBUG, "%s: NAT-T OAr present\n", __func__));
4752 if (mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL &&
4753 mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
4754 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
4755 struct sadb_x_nat_t_type *type;
4756 struct sadb_x_nat_t_port *sport, *dport;
4758 if (mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type) ||
4759 mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
4760 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
4761 ipseclog((LOG_DEBUG, "%s: invalid nat-t message "
4762 "passed.\n", __func__));
4763 return key_senderror(so, m, EINVAL);
4766 sport = (struct sadb_x_nat_t_port *)
4767 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
4768 dport = (struct sadb_x_nat_t_port *)
4769 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
4772 KEY_PORTTOSADDR(&saidx.src, sport->sadb_x_nat_t_port_port);
4774 KEY_PORTTOSADDR(&saidx.dst, dport->sadb_x_nat_t_port_port);
4778 /* SPI allocation */
4779 spi = key_do_getnewspi((struct sadb_spirange *)mhp->ext[SADB_EXT_SPIRANGE],
4782 return key_senderror(so, m, EINVAL);
4784 /* get a SA index */
4785 if ((newsah = key_getsah(&saidx)) == NULL) {
4786 /* create a new SA index */
4787 if ((newsah = key_newsah(&saidx)) == NULL) {
4788 ipseclog((LOG_DEBUG, "%s: No more memory.\n",__func__));
4789 return key_senderror(so, m, ENOBUFS);
4795 newsav = KEY_NEWSAV(m, mhp, newsah, &error);
4796 if (newsav == NULL) {
4797 /* XXX don't free new SA index allocated in above. */
4798 return key_senderror(so, m, error);
4802 newsav->spi = htonl(spi);
4804 /* delete the entry in acqtree */
4805 if (mhp->msg->sadb_msg_seq != 0) {
4807 if ((acq = key_getacqbyseq(mhp->msg->sadb_msg_seq)) != NULL) {
4808 /* reset counter in order to deletion by timehandler. */
4809 acq->created = time_second;
4815 struct mbuf *n, *nn;
4816 struct sadb_sa *m_sa;
4817 struct sadb_msg *newmsg;
4820 /* create new sadb_msg to reply. */
4821 len = PFKEY_ALIGN8(sizeof(struct sadb_msg)) +
4822 PFKEY_ALIGN8(sizeof(struct sadb_sa));
4824 MGETHDR(n, M_DONTWAIT, MT_DATA);
4826 MCLGET(n, M_DONTWAIT);
4827 if ((n->m_flags & M_EXT) == 0) {
4833 return key_senderror(so, m, ENOBUFS);
4839 m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
4840 off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
4842 m_sa = (struct sadb_sa *)(mtod(n, caddr_t) + off);
4843 m_sa->sadb_sa_len = PFKEY_UNIT64(sizeof(struct sadb_sa));
4844 m_sa->sadb_sa_exttype = SADB_EXT_SA;
4845 m_sa->sadb_sa_spi = htonl(spi);
4846 off += PFKEY_ALIGN8(sizeof(struct sadb_sa));
4848 IPSEC_ASSERT(off == len,
4849 ("length inconsistency (off %u len %u)", off, len));
4851 n->m_next = key_gather_mbuf(m, mhp, 0, 2, SADB_EXT_ADDRESS_SRC,
4852 SADB_EXT_ADDRESS_DST);
4855 return key_senderror(so, m, ENOBUFS);
4858 if (n->m_len < sizeof(struct sadb_msg)) {
4859 n = m_pullup(n, sizeof(struct sadb_msg));
4861 return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
4864 n->m_pkthdr.len = 0;
4865 for (nn = n; nn; nn = nn->m_next)
4866 n->m_pkthdr.len += nn->m_len;
4868 newmsg = mtod(n, struct sadb_msg *);
4869 newmsg->sadb_msg_seq = newsav->seq;
4870 newmsg->sadb_msg_errno = 0;
4871 newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
4874 return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
4879 * allocating new SPI
4880 * called by key_getspi().
4886 key_do_getnewspi(spirange, saidx)
4887 struct sadb_spirange *spirange;
4888 struct secasindex *saidx;
4892 int count = V_key_spi_trycnt;
4894 /* set spi range to allocate */
4895 if (spirange != NULL) {
4896 min = spirange->sadb_spirange_min;
4897 max = spirange->sadb_spirange_max;
4899 min = V_key_spi_minval;
4900 max = V_key_spi_maxval;
4902 /* IPCOMP needs 2-byte SPI */
4903 if (saidx->proto == IPPROTO_IPCOMP) {
4910 t = min; min = max; max = t;
4915 if (key_checkspidup(saidx, min) != NULL) {
4916 ipseclog((LOG_DEBUG, "%s: SPI %u exists already.\n",
4921 count--; /* taking one cost. */
4929 /* when requesting to allocate spi ranged */
4931 /* generate pseudo-random SPI value ranged. */
4932 newspi = min + (key_random() % (max - min + 1));
4934 if (key_checkspidup(saidx, newspi) == NULL)
4938 if (count == 0 || newspi == 0) {
4939 ipseclog((LOG_DEBUG, "%s: to allocate spi is failed.\n",
4946 keystat.getspi_count =
4947 (keystat.getspi_count + V_key_spi_trycnt - count) / 2;
4953 * SADB_UPDATE processing
4955 * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
4956 * key(AE), (identity(SD),) (sensitivity)>
4957 * from the ikmpd, and update a secasvar entry whose status is SADB_SASTATE_LARVAL.
4959 * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
4960 * (identity(SD),) (sensitivity)>
4963 * m will always be freed.
4966 key_update(so, m, mhp)
4969 const struct sadb_msghdr *mhp;
4971 struct sadb_sa *sa0;
4972 struct sadb_address *src0, *dst0;
4974 struct sadb_x_nat_t_type *type;
4975 struct sadb_x_nat_t_port *sport, *dport;
4976 struct sadb_address *iaddr, *raddr;
4977 struct sadb_x_nat_t_frag *frag;
4979 struct secasindex saidx;
4980 struct secashead *sah;
4981 struct secasvar *sav;
4987 IPSEC_ASSERT(so != NULL, ("null socket"));
4988 IPSEC_ASSERT(m != NULL, ("null mbuf"));
4989 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
4990 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
4992 /* map satype to proto */
4993 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
4994 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
4996 return key_senderror(so, m, EINVAL);
4999 if (mhp->ext[SADB_EXT_SA] == NULL ||
5000 mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5001 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
5002 (mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
5003 mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
5004 (mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
5005 mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
5006 (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL &&
5007 mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
5008 (mhp->ext[SADB_EXT_LIFETIME_HARD] == NULL &&
5009 mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
5010 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5012 return key_senderror(so, m, EINVAL);
5014 if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
5015 mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5016 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5017 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5019 return key_senderror(so, m, EINVAL);
5021 if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
5022 mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
5023 reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
5025 mode = IPSEC_MODE_ANY;
5028 /* XXX boundary checking for other extensions */
5030 sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5031 src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
5032 dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
5034 /* XXX boundary check against sa_len */
5035 KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
5038 * Make sure the port numbers are zero.
5039 * In case of NAT-T we will update them later if needed.
5041 KEY_PORTTOSADDR(&saidx.src, 0);
5042 KEY_PORTTOSADDR(&saidx.dst, 0);
5046 * Handle NAT-T info if present.
5048 if (mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL &&
5049 mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
5050 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
5052 if (mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type) ||
5053 mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
5054 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
5055 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
5057 return key_senderror(so, m, EINVAL);
5060 type = (struct sadb_x_nat_t_type *)
5061 mhp->ext[SADB_X_EXT_NAT_T_TYPE];
5062 sport = (struct sadb_x_nat_t_port *)
5063 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
5064 dport = (struct sadb_x_nat_t_port *)
5065 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
5070 if (mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL &&
5071 mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL) {
5072 if (mhp->extlen[SADB_X_EXT_NAT_T_OAI] < sizeof(*iaddr) ||
5073 mhp->extlen[SADB_X_EXT_NAT_T_OAR] < sizeof(*raddr)) {
5074 ipseclog((LOG_DEBUG, "%s: invalid message\n",
5076 return key_senderror(so, m, EINVAL);
5078 iaddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAI];
5079 raddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAR];
5080 ipseclog((LOG_DEBUG, "%s: NAT-T OAi/r present\n", __func__));
5082 iaddr = raddr = NULL;
5084 if (mhp->ext[SADB_X_EXT_NAT_T_FRAG] != NULL) {
5085 if (mhp->extlen[SADB_X_EXT_NAT_T_FRAG] < sizeof(*frag)) {
5086 ipseclog((LOG_DEBUG, "%s: invalid message\n",
5088 return key_senderror(so, m, EINVAL);
5090 frag = (struct sadb_x_nat_t_frag *)
5091 mhp->ext[SADB_X_EXT_NAT_T_FRAG];
5097 /* get a SA header */
5098 if ((sah = key_getsah(&saidx)) == NULL) {
5099 ipseclog((LOG_DEBUG, "%s: no SA index found.\n", __func__));
5100 return key_senderror(so, m, ENOENT);
5103 /* set spidx if there */
5105 error = key_setident(sah, m, mhp);
5107 return key_senderror(so, m, error);
5109 /* find a SA with sequence number. */
5110 #ifdef IPSEC_DOSEQCHECK
5111 if (mhp->msg->sadb_msg_seq != 0
5112 && (sav = key_getsavbyseq(sah, mhp->msg->sadb_msg_seq)) == NULL) {
5113 ipseclog((LOG_DEBUG, "%s: no larval SA with sequence %u "
5114 "exists.\n", __func__, mhp->msg->sadb_msg_seq));
5115 return key_senderror(so, m, ENOENT);
5119 sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
5122 ipseclog((LOG_DEBUG, "%s: no such a SA found (spi:%u)\n",
5123 __func__, (u_int32_t)ntohl(sa0->sadb_sa_spi)));
5124 return key_senderror(so, m, EINVAL);
5128 /* validity check */
5129 if (sav->sah->saidx.proto != proto) {
5130 ipseclog((LOG_DEBUG, "%s: protocol mismatched "
5131 "(DB=%u param=%u)\n", __func__,
5132 sav->sah->saidx.proto, proto));
5133 return key_senderror(so, m, EINVAL);
5135 #ifdef IPSEC_DOSEQCHECK
5136 if (sav->spi != sa0->sadb_sa_spi) {
5137 ipseclog((LOG_DEBUG, "%s: SPI mismatched (DB:%u param:%u)\n",
5139 (u_int32_t)ntohl(sav->spi),
5140 (u_int32_t)ntohl(sa0->sadb_sa_spi)));
5141 return key_senderror(so, m, EINVAL);
5144 if (sav->pid != mhp->msg->sadb_msg_pid) {
5145 ipseclog((LOG_DEBUG, "%s: pid mismatched (DB:%u param:%u)\n",
5146 __func__, sav->pid, mhp->msg->sadb_msg_pid));
5147 return key_senderror(so, m, EINVAL);
5150 /* copy sav values */
5151 error = key_setsaval(sav, m, mhp);
5154 return key_senderror(so, m, error);
5159 * Handle more NAT-T info if present,
5160 * now that we have a sav to fill.
5163 sav->natt_type = type->sadb_x_nat_t_type_type;
5166 KEY_PORTTOSADDR(&sav->sah->saidx.src,
5167 sport->sadb_x_nat_t_port_port);
5169 KEY_PORTTOSADDR(&sav->sah->saidx.dst,
5170 dport->sadb_x_nat_t_port_port);
5174 * In case SADB_X_EXT_NAT_T_FRAG was not given, leave it at 0.
5175 * We should actually check for a minimum MTU here, if we
5176 * want to support it in ip_output.
5179 sav->natt_esp_frag_len = frag->sadb_x_nat_t_frag_fraglen;
5183 /* check SA values to be mature. */
5184 if ((mhp->msg->sadb_msg_errno = key_mature(sav)) != 0) {
5186 return key_senderror(so, m, 0);
5192 /* set msg buf from mhp */
5193 n = key_getmsgbuf_x1(m, mhp);
5195 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
5196 return key_senderror(so, m, ENOBUFS);
5200 return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5205 * search SAD with sequence for a SA which state is SADB_SASTATE_LARVAL.
5206 * only called by key_update().
5209 * others : found, pointer to a SA.
5211 #ifdef IPSEC_DOSEQCHECK
5212 static struct secasvar *
5213 key_getsavbyseq(sah, seq)
5214 struct secashead *sah;
5217 struct secasvar *sav;
5220 state = SADB_SASTATE_LARVAL;
5222 /* search SAD with sequence number ? */
5223 LIST_FOREACH(sav, &sah->savtree[state], chain) {
5225 KEY_CHKSASTATE(state, sav->state, __func__);
5227 if (sav->seq == seq) {
5229 KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
5230 printf("DP %s cause refcnt++:%d SA:%p\n",
5231 __func__, sav->refcnt, sav));
5241 * SADB_ADD processing
5242 * add an entry to SA database, when received
5243 * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
5244 * key(AE), (identity(SD),) (sensitivity)>
5247 * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
5248 * (identity(SD),) (sensitivity)>
5251 * IGNORE identity and sensitivity messages.
5253 * m will always be freed.
5259 const struct sadb_msghdr *mhp;
5261 struct sadb_sa *sa0;
5262 struct sadb_address *src0, *dst0;
5264 struct sadb_x_nat_t_type *type;
5265 struct sadb_address *iaddr, *raddr;
5266 struct sadb_x_nat_t_frag *frag;
5268 struct secasindex saidx;
5269 struct secashead *newsah;
5270 struct secasvar *newsav;
5276 IPSEC_ASSERT(so != NULL, ("null socket"));
5277 IPSEC_ASSERT(m != NULL, ("null mbuf"));
5278 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
5279 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
5281 /* map satype to proto */
5282 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
5283 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
5285 return key_senderror(so, m, EINVAL);
5288 if (mhp->ext[SADB_EXT_SA] == NULL ||
5289 mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5290 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
5291 (mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
5292 mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
5293 (mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
5294 mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
5295 (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL &&
5296 mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
5297 (mhp->ext[SADB_EXT_LIFETIME_HARD] == NULL &&
5298 mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
5299 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5301 return key_senderror(so, m, EINVAL);
5303 if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
5304 mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5305 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5307 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5309 return key_senderror(so, m, EINVAL);
5311 if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
5312 mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
5313 reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
5315 mode = IPSEC_MODE_ANY;
5319 sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5320 src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
5321 dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
5323 /* XXX boundary check against sa_len */
5324 KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
5327 * Make sure the port numbers are zero.
5328 * In case of NAT-T we will update them later if needed.
5330 KEY_PORTTOSADDR(&saidx.src, 0);
5331 KEY_PORTTOSADDR(&saidx.dst, 0);
5335 * Handle NAT-T info if present.
5337 if (mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL &&
5338 mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
5339 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
5340 struct sadb_x_nat_t_port *sport, *dport;
5342 if (mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type) ||
5343 mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
5344 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
5345 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
5347 return key_senderror(so, m, EINVAL);
5350 type = (struct sadb_x_nat_t_type *)
5351 mhp->ext[SADB_X_EXT_NAT_T_TYPE];
5352 sport = (struct sadb_x_nat_t_port *)
5353 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
5354 dport = (struct sadb_x_nat_t_port *)
5355 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
5358 KEY_PORTTOSADDR(&saidx.src,
5359 sport->sadb_x_nat_t_port_port);
5361 KEY_PORTTOSADDR(&saidx.dst,
5362 dport->sadb_x_nat_t_port_port);
5366 if (mhp->ext[SADB_X_EXT_NAT_T_OAI] != NULL &&
5367 mhp->ext[SADB_X_EXT_NAT_T_OAR] != NULL) {
5368 if (mhp->extlen[SADB_X_EXT_NAT_T_OAI] < sizeof(*iaddr) ||
5369 mhp->extlen[SADB_X_EXT_NAT_T_OAR] < sizeof(*raddr)) {
5370 ipseclog((LOG_DEBUG, "%s: invalid message\n",
5372 return key_senderror(so, m, EINVAL);
5374 iaddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAI];
5375 raddr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OAR];
5376 ipseclog((LOG_DEBUG, "%s: NAT-T OAi/r present\n", __func__));
5378 iaddr = raddr = NULL;
5380 if (mhp->ext[SADB_X_EXT_NAT_T_FRAG] != NULL) {
5381 if (mhp->extlen[SADB_X_EXT_NAT_T_FRAG] < sizeof(*frag)) {
5382 ipseclog((LOG_DEBUG, "%s: invalid message\n",
5384 return key_senderror(so, m, EINVAL);
5386 frag = (struct sadb_x_nat_t_frag *)
5387 mhp->ext[SADB_X_EXT_NAT_T_FRAG];
5393 /* get a SA header */
5394 if ((newsah = key_getsah(&saidx)) == NULL) {
5395 /* create a new SA header */
5396 if ((newsah = key_newsah(&saidx)) == NULL) {
5397 ipseclog((LOG_DEBUG, "%s: No more memory.\n",__func__));
5398 return key_senderror(so, m, ENOBUFS);
5402 /* set spidx if there */
5404 error = key_setident(newsah, m, mhp);
5406 return key_senderror(so, m, error);
5409 /* create new SA entry. */
5410 /* We can create new SA only if SPI is differenct. */
5412 newsav = key_getsavbyspi(newsah, sa0->sadb_sa_spi);
5414 if (newsav != NULL) {
5415 ipseclog((LOG_DEBUG, "%s: SA already exists.\n", __func__));
5416 return key_senderror(so, m, EEXIST);
5418 newsav = KEY_NEWSAV(m, mhp, newsah, &error);
5419 if (newsav == NULL) {
5420 return key_senderror(so, m, error);
5425 * Handle more NAT-T info if present,
5426 * now that we have a sav to fill.
5429 newsav->natt_type = type->sadb_x_nat_t_type_type;
5433 * In case SADB_X_EXT_NAT_T_FRAG was not given, leave it at 0.
5434 * We should actually check for a minimum MTU here, if we
5435 * want to support it in ip_output.
5438 newsav->natt_esp_frag_len = frag->sadb_x_nat_t_frag_fraglen;
5442 /* check SA values to be mature. */
5443 if ((error = key_mature(newsav)) != 0) {
5444 KEY_FREESAV(&newsav);
5445 return key_senderror(so, m, error);
5449 * don't call key_freesav() here, as we would like to keep the SA
5450 * in the database on success.
5456 /* set msg buf from mhp */
5457 n = key_getmsgbuf_x1(m, mhp);
5459 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
5460 return key_senderror(so, m, ENOBUFS);
5464 return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5470 key_setident(sah, m, mhp)
5471 struct secashead *sah;
5473 const struct sadb_msghdr *mhp;
5475 const struct sadb_ident *idsrc, *iddst;
5476 int idsrclen, iddstlen;
5478 IPSEC_ASSERT(sah != NULL, ("null secashead"));
5479 IPSEC_ASSERT(m != NULL, ("null mbuf"));
5480 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
5481 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
5483 /* don't make buffer if not there */
5484 if (mhp->ext[SADB_EXT_IDENTITY_SRC] == NULL &&
5485 mhp->ext[SADB_EXT_IDENTITY_DST] == NULL) {
5491 if (mhp->ext[SADB_EXT_IDENTITY_SRC] == NULL ||
5492 mhp->ext[SADB_EXT_IDENTITY_DST] == NULL) {
5493 ipseclog((LOG_DEBUG, "%s: invalid identity.\n", __func__));
5497 idsrc = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_SRC];
5498 iddst = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_DST];
5499 idsrclen = mhp->extlen[SADB_EXT_IDENTITY_SRC];
5500 iddstlen = mhp->extlen[SADB_EXT_IDENTITY_DST];
5502 /* validity check */
5503 if (idsrc->sadb_ident_type != iddst->sadb_ident_type) {
5504 ipseclog((LOG_DEBUG, "%s: ident type mismatch.\n", __func__));
5508 switch (idsrc->sadb_ident_type) {
5509 case SADB_IDENTTYPE_PREFIX:
5510 case SADB_IDENTTYPE_FQDN:
5511 case SADB_IDENTTYPE_USERFQDN:
5513 /* XXX do nothing */
5519 /* make structure */
5520 sah->idents = malloc(sizeof(struct secident), M_IPSEC_MISC, M_NOWAIT);
5521 if (sah->idents == NULL) {
5522 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
5525 sah->identd = malloc(sizeof(struct secident), M_IPSEC_MISC, M_NOWAIT);
5526 if (sah->identd == NULL) {
5527 free(sah->idents, M_IPSEC_MISC);
5529 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
5532 sah->idents->type = idsrc->sadb_ident_type;
5533 sah->idents->id = idsrc->sadb_ident_id;
5535 sah->identd->type = iddst->sadb_ident_type;
5536 sah->identd->id = iddst->sadb_ident_id;
5542 * m will not be freed on return.
5543 * it is caller's responsibility to free the result.
5545 static struct mbuf *
5546 key_getmsgbuf_x1(m, mhp)
5548 const struct sadb_msghdr *mhp;
5552 IPSEC_ASSERT(m != NULL, ("null mbuf"));
5553 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
5554 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
5556 /* create new sadb_msg to reply. */
5557 n = key_gather_mbuf(m, mhp, 1, 9, SADB_EXT_RESERVED,
5558 SADB_EXT_SA, SADB_X_EXT_SA2,
5559 SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST,
5560 SADB_EXT_LIFETIME_HARD, SADB_EXT_LIFETIME_SOFT,
5561 SADB_EXT_IDENTITY_SRC, SADB_EXT_IDENTITY_DST);
5565 if (n->m_len < sizeof(struct sadb_msg)) {
5566 n = m_pullup(n, sizeof(struct sadb_msg));
5570 mtod(n, struct sadb_msg *)->sadb_msg_errno = 0;
5571 mtod(n, struct sadb_msg *)->sadb_msg_len =
5572 PFKEY_UNIT64(n->m_pkthdr.len);
5577 static int key_delete_all __P((struct socket *, struct mbuf *,
5578 const struct sadb_msghdr *, u_int16_t));
5581 * SADB_DELETE processing
5583 * <base, SA(*), address(SD)>
5584 * from the ikmpd, and set SADB_SASTATE_DEAD,
5586 * <base, SA(*), address(SD)>
5589 * m will always be freed.
5592 key_delete(so, m, mhp)
5595 const struct sadb_msghdr *mhp;
5597 struct sadb_sa *sa0;
5598 struct sadb_address *src0, *dst0;
5599 struct secasindex saidx;
5600 struct secashead *sah;
5601 struct secasvar *sav = NULL;
5604 IPSEC_ASSERT(so != NULL, ("null socket"));
5605 IPSEC_ASSERT(m != NULL, ("null mbuf"));
5606 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
5607 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
5609 /* map satype to proto */
5610 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
5611 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
5613 return key_senderror(so, m, EINVAL);
5616 if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5617 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
5618 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5620 return key_senderror(so, m, EINVAL);
5623 if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5624 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5625 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5627 return key_senderror(so, m, EINVAL);
5630 if (mhp->ext[SADB_EXT_SA] == NULL) {
5632 * Caller wants us to delete all non-LARVAL SAs
5633 * that match the src/dst. This is used during
5634 * IKE INITIAL-CONTACT.
5636 ipseclog((LOG_DEBUG, "%s: doing delete all.\n", __func__));
5637 return key_delete_all(so, m, mhp, proto);
5638 } else if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa)) {
5639 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5641 return key_senderror(so, m, EINVAL);
5644 sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5645 src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
5646 dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
5648 /* XXX boundary check against sa_len */
5649 KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
5652 * Make sure the port numbers are zero.
5653 * In case of NAT-T we will update them later if needed.
5655 KEY_PORTTOSADDR(&saidx.src, 0);
5656 KEY_PORTTOSADDR(&saidx.dst, 0);
5660 * Handle NAT-T info if present.
5662 if (mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
5663 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
5664 struct sadb_x_nat_t_port *sport, *dport;
5666 if (mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
5667 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
5668 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
5670 return key_senderror(so, m, EINVAL);
5673 sport = (struct sadb_x_nat_t_port *)
5674 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
5675 dport = (struct sadb_x_nat_t_port *)
5676 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
5679 KEY_PORTTOSADDR(&saidx.src,
5680 sport->sadb_x_nat_t_port_port);
5682 KEY_PORTTOSADDR(&saidx.dst,
5683 dport->sadb_x_nat_t_port_port);
5687 /* get a SA header */
5689 LIST_FOREACH(sah, &V_sahtree, chain) {
5690 if (sah->state == SADB_SASTATE_DEAD)
5692 if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
5695 /* get a SA with SPI. */
5696 sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
5702 ipseclog((LOG_DEBUG, "%s: no SA found.\n", __func__));
5703 return key_senderror(so, m, ENOENT);
5706 key_sa_chgstate(sav, SADB_SASTATE_DEAD);
5712 struct sadb_msg *newmsg;
5714 /* create new sadb_msg to reply. */
5715 /* XXX-BZ NAT-T extensions? */
5716 n = key_gather_mbuf(m, mhp, 1, 4, SADB_EXT_RESERVED,
5717 SADB_EXT_SA, SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
5719 return key_senderror(so, m, ENOBUFS);
5721 if (n->m_len < sizeof(struct sadb_msg)) {
5722 n = m_pullup(n, sizeof(struct sadb_msg));
5724 return key_senderror(so, m, ENOBUFS);
5726 newmsg = mtod(n, struct sadb_msg *);
5727 newmsg->sadb_msg_errno = 0;
5728 newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
5731 return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5736 * delete all SAs for src/dst. Called from key_delete().
5739 key_delete_all(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp,
5742 struct sadb_address *src0, *dst0;
5743 struct secasindex saidx;
5744 struct secashead *sah;
5745 struct secasvar *sav, *nextsav;
5746 u_int stateidx, state;
5748 src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
5749 dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
5751 /* XXX boundary check against sa_len */
5752 KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
5755 * Make sure the port numbers are zero.
5756 * In case of NAT-T we will update them later if needed.
5758 KEY_PORTTOSADDR(&saidx.src, 0);
5759 KEY_PORTTOSADDR(&saidx.dst, 0);
5763 * Handle NAT-T info if present.
5766 if (mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
5767 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
5768 struct sadb_x_nat_t_port *sport, *dport;
5770 if (mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
5771 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
5772 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
5774 return key_senderror(so, m, EINVAL);
5777 sport = (struct sadb_x_nat_t_port *)
5778 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
5779 dport = (struct sadb_x_nat_t_port *)
5780 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
5783 KEY_PORTTOSADDR(&saidx.src,
5784 sport->sadb_x_nat_t_port_port);
5786 KEY_PORTTOSADDR(&saidx.dst,
5787 dport->sadb_x_nat_t_port_port);
5792 LIST_FOREACH(sah, &V_sahtree, chain) {
5793 if (sah->state == SADB_SASTATE_DEAD)
5795 if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
5798 /* Delete all non-LARVAL SAs. */
5800 stateidx < _ARRAYLEN(saorder_state_alive);
5802 state = saorder_state_alive[stateidx];
5803 if (state == SADB_SASTATE_LARVAL)
5805 for (sav = LIST_FIRST(&sah->savtree[state]);
5806 sav != NULL; sav = nextsav) {
5807 nextsav = LIST_NEXT(sav, chain);
5809 if (sav->state != state) {
5810 ipseclog((LOG_DEBUG, "%s: invalid "
5811 "sav->state (queue %d SA %d)\n",
5812 __func__, state, sav->state));
5816 key_sa_chgstate(sav, SADB_SASTATE_DEAD);
5824 struct sadb_msg *newmsg;
5826 /* create new sadb_msg to reply. */
5827 /* XXX-BZ NAT-T extensions? */
5828 n = key_gather_mbuf(m, mhp, 1, 3, SADB_EXT_RESERVED,
5829 SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
5831 return key_senderror(so, m, ENOBUFS);
5833 if (n->m_len < sizeof(struct sadb_msg)) {
5834 n = m_pullup(n, sizeof(struct sadb_msg));
5836 return key_senderror(so, m, ENOBUFS);
5838 newmsg = mtod(n, struct sadb_msg *);
5839 newmsg->sadb_msg_errno = 0;
5840 newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
5843 return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5848 * SADB_GET processing
5850 * <base, SA(*), address(SD)>
5851 * from the ikmpd, and get a SP and a SA to respond,
5853 * <base, SA, (lifetime(HSC),) address(SD), (address(P),) key(AE),
5854 * (identity(SD),) (sensitivity)>
5857 * m will always be freed.
5863 const struct sadb_msghdr *mhp;
5865 struct sadb_sa *sa0;
5866 struct sadb_address *src0, *dst0;
5867 struct secasindex saidx;
5868 struct secashead *sah;
5869 struct secasvar *sav = NULL;
5872 IPSEC_ASSERT(so != NULL, ("null socket"));
5873 IPSEC_ASSERT(m != NULL, ("null mbuf"));
5874 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
5875 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
5877 /* map satype to proto */
5878 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
5879 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
5881 return key_senderror(so, m, EINVAL);
5884 if (mhp->ext[SADB_EXT_SA] == NULL ||
5885 mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5886 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
5887 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5889 return key_senderror(so, m, EINVAL);
5891 if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
5892 mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5893 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5894 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
5896 return key_senderror(so, m, EINVAL);
5899 sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5900 src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
5901 dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
5903 /* XXX boundary check against sa_len */
5904 KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
5907 * Make sure the port numbers are zero.
5908 * In case of NAT-T we will update them later if needed.
5910 KEY_PORTTOSADDR(&saidx.src, 0);
5911 KEY_PORTTOSADDR(&saidx.dst, 0);
5915 * Handle NAT-T info if present.
5918 if (mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
5919 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
5920 struct sadb_x_nat_t_port *sport, *dport;
5922 if (mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
5923 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
5924 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
5926 return key_senderror(so, m, EINVAL);
5929 sport = (struct sadb_x_nat_t_port *)
5930 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
5931 dport = (struct sadb_x_nat_t_port *)
5932 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
5935 KEY_PORTTOSADDR(&saidx.src,
5936 sport->sadb_x_nat_t_port_port);
5938 KEY_PORTTOSADDR(&saidx.dst,
5939 dport->sadb_x_nat_t_port_port);
5943 /* get a SA header */
5945 LIST_FOREACH(sah, &V_sahtree, chain) {
5946 if (sah->state == SADB_SASTATE_DEAD)
5948 if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
5951 /* get a SA with SPI. */
5952 sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
5958 ipseclog((LOG_DEBUG, "%s: no SA found.\n", __func__));
5959 return key_senderror(so, m, ENOENT);
5966 /* map proto to satype */
5967 if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
5968 ipseclog((LOG_DEBUG, "%s: there was invalid proto in SAD.\n",
5970 return key_senderror(so, m, EINVAL);
5973 /* create new sadb_msg to reply. */
5974 n = key_setdumpsa(sav, SADB_GET, satype, mhp->msg->sadb_msg_seq,
5975 mhp->msg->sadb_msg_pid);
5977 return key_senderror(so, m, ENOBUFS);
5980 return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
5984 /* XXX make it sysctl-configurable? */
5986 key_getcomb_setlifetime(comb)
5987 struct sadb_comb *comb;
5990 comb->sadb_comb_soft_allocations = 1;
5991 comb->sadb_comb_hard_allocations = 1;
5992 comb->sadb_comb_soft_bytes = 0;
5993 comb->sadb_comb_hard_bytes = 0;
5994 comb->sadb_comb_hard_addtime = 86400; /* 1 day */
5995 comb->sadb_comb_soft_addtime = comb->sadb_comb_soft_addtime * 80 / 100;
5996 comb->sadb_comb_soft_usetime = 28800; /* 8 hours */
5997 comb->sadb_comb_hard_usetime = comb->sadb_comb_hard_usetime * 80 / 100;
6001 * XXX reorder combinations by preference
6002 * XXX no idea if the user wants ESP authentication or not
6004 static struct mbuf *
6007 struct sadb_comb *comb;
6008 struct enc_xform *algo;
6009 struct mbuf *result = NULL, *m, *n;
6013 const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
6016 for (i = 1; i <= SADB_EALG_MAX; i++) {
6017 algo = esp_algorithm_lookup(i);
6021 /* discard algorithms with key size smaller than system min */
6022 if (_BITS(algo->maxkey) < V_ipsec_esp_keymin)
6024 if (_BITS(algo->minkey) < V_ipsec_esp_keymin)
6025 encmin = V_ipsec_esp_keymin;
6027 encmin = _BITS(algo->minkey);
6029 if (V_ipsec_esp_auth)
6030 m = key_getcomb_ah();
6032 IPSEC_ASSERT(l <= MLEN,
6033 ("l=%u > MLEN=%lu", l, (u_long) MLEN));
6034 MGET(m, M_DONTWAIT, MT_DATA);
6039 bzero(mtod(m, caddr_t), m->m_len);
6046 for (n = m; n; n = n->m_next)
6048 IPSEC_ASSERT((totlen % l) == 0, ("totlen=%u, l=%u", totlen, l));
6050 for (off = 0; off < totlen; off += l) {
6051 n = m_pulldown(m, off, l, &o);
6053 /* m is already freed */
6056 comb = (struct sadb_comb *)(mtod(n, caddr_t) + o);
6057 bzero(comb, sizeof(*comb));
6058 key_getcomb_setlifetime(comb);
6059 comb->sadb_comb_encrypt = i;
6060 comb->sadb_comb_encrypt_minbits = encmin;
6061 comb->sadb_comb_encrypt_maxbits = _BITS(algo->maxkey);
6080 const struct auth_hash *ah,
6086 *min = *max = ah->keysize;
6087 if (ah->keysize == 0) {
6089 * Transform takes arbitrary key size but algorithm
6090 * key size is restricted. Enforce this here.
6093 case SADB_X_AALG_MD5: *min = *max = 16; break;
6094 case SADB_X_AALG_SHA: *min = *max = 20; break;
6095 case SADB_X_AALG_NULL: *min = 1; *max = 256; break;
6096 case SADB_X_AALG_SHA2_256: *min = *max = 32; break;
6097 case SADB_X_AALG_SHA2_384: *min = *max = 48; break;
6098 case SADB_X_AALG_SHA2_512: *min = *max = 64; break;
6100 DPRINTF(("%s: unknown AH algorithm %u\n",
6108 * XXX reorder combinations by preference
6110 static struct mbuf *
6113 struct sadb_comb *comb;
6114 struct auth_hash *algo;
6116 u_int16_t minkeysize, maxkeysize;
6118 const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
6121 for (i = 1; i <= SADB_AALG_MAX; i++) {
6123 /* we prefer HMAC algorithms, not old algorithms */
6124 if (i != SADB_AALG_SHA1HMAC &&
6125 i != SADB_AALG_MD5HMAC &&
6126 i != SADB_X_AALG_SHA2_256 &&
6127 i != SADB_X_AALG_SHA2_384 &&
6128 i != SADB_X_AALG_SHA2_512)
6131 algo = ah_algorithm_lookup(i);
6134 key_getsizes_ah(algo, i, &minkeysize, &maxkeysize);
6135 /* discard algorithms with key size smaller than system min */
6136 if (_BITS(minkeysize) < V_ipsec_ah_keymin)
6140 IPSEC_ASSERT(l <= MLEN,
6141 ("l=%u > MLEN=%lu", l, (u_long) MLEN));
6142 MGET(m, M_DONTWAIT, MT_DATA);
6149 M_PREPEND(m, l, M_DONTWAIT);
6153 comb = mtod(m, struct sadb_comb *);
6154 bzero(comb, sizeof(*comb));
6155 key_getcomb_setlifetime(comb);
6156 comb->sadb_comb_auth = i;
6157 comb->sadb_comb_auth_minbits = _BITS(minkeysize);
6158 comb->sadb_comb_auth_maxbits = _BITS(maxkeysize);
6165 * not really an official behavior. discussed in pf_key@inner.net in Sep2000.
6166 * XXX reorder combinations by preference
6168 static struct mbuf *
6169 key_getcomb_ipcomp()
6171 struct sadb_comb *comb;
6172 struct comp_algo *algo;
6175 const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
6178 for (i = 1; i <= SADB_X_CALG_MAX; i++) {
6179 algo = ipcomp_algorithm_lookup(i);
6184 IPSEC_ASSERT(l <= MLEN,
6185 ("l=%u > MLEN=%lu", l, (u_long) MLEN));
6186 MGET(m, M_DONTWAIT, MT_DATA);
6193 M_PREPEND(m, l, M_DONTWAIT);
6197 comb = mtod(m, struct sadb_comb *);
6198 bzero(comb, sizeof(*comb));
6199 key_getcomb_setlifetime(comb);
6200 comb->sadb_comb_encrypt = i;
6201 /* what should we set into sadb_comb_*_{min,max}bits? */
6208 * XXX no way to pass mode (transport/tunnel) to userland
6209 * XXX replay checking?
6210 * XXX sysctl interface to ipsec_{ah,esp}_keymin
6212 static struct mbuf *
6214 const struct secasindex *saidx;
6216 struct sadb_prop *prop;
6218 const int l = PFKEY_ALIGN8(sizeof(struct sadb_prop));
6221 switch (saidx->proto) {
6223 m = key_getcomb_esp();
6226 m = key_getcomb_ah();
6228 case IPPROTO_IPCOMP:
6229 m = key_getcomb_ipcomp();
6237 M_PREPEND(m, l, M_DONTWAIT);
6242 for (n = m; n; n = n->m_next)
6245 prop = mtod(m, struct sadb_prop *);
6246 bzero(prop, sizeof(*prop));
6247 prop->sadb_prop_len = PFKEY_UNIT64(totlen);
6248 prop->sadb_prop_exttype = SADB_EXT_PROPOSAL;
6249 prop->sadb_prop_replay = 32; /* XXX */
6255 * SADB_ACQUIRE processing called by key_checkrequest() and key_acquire2().
6257 * <base, SA, address(SD), (address(P)), x_policy,
6258 * (identity(SD),) (sensitivity,) proposal>
6259 * to KMD, and expect to receive
6260 * <base> with SADB_ACQUIRE if error occured,
6262 * <base, src address, dst address, (SPI range)> with SADB_GETSPI
6263 * from KMD by PF_KEY.
6265 * XXX x_policy is outside of RFC2367 (KAME extension).
6266 * XXX sensitivity is not supported.
6267 * XXX for ipcomp, RFC2367 does not define how to fill in proposal.
6268 * see comment for key_getcomb_ipcomp().
6272 * others: error number
6275 key_acquire(const struct secasindex *saidx, struct secpolicy *sp)
6277 struct mbuf *result = NULL, *m;
6278 struct secacq *newacq;
6283 IPSEC_ASSERT(saidx != NULL, ("null saidx"));
6284 satype = key_proto2satype(saidx->proto);
6285 IPSEC_ASSERT(satype != 0, ("null satype, protocol %u", saidx->proto));
6288 * We never do anything about acquirng SA. There is anather
6289 * solution that kernel blocks to send SADB_ACQUIRE message until
6290 * getting something message from IKEd. In later case, to be
6291 * managed with ACQUIRING list.
6293 /* Get an entry to check whether sending message or not. */
6294 if ((newacq = key_getacq(saidx)) != NULL) {
6295 if (V_key_blockacq_count < newacq->count) {
6296 /* reset counter and do send message. */
6299 /* increment counter and do nothing. */
6304 /* make new entry for blocking to send SADB_ACQUIRE. */
6305 if ((newacq = key_newacq(saidx)) == NULL)
6311 m = key_setsadbmsg(SADB_ACQUIRE, 0, satype, seq, 0, 0);
6319 * No SADB_X_EXT_NAT_T_* here: we do not know
6320 * anything related to NAT-T at this time.
6323 /* set sadb_address for saidx's. */
6324 m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
6325 &saidx->src.sa, FULLMASK, IPSEC_ULPROTO_ANY);
6332 m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
6333 &saidx->dst.sa, FULLMASK, IPSEC_ULPROTO_ANY);
6340 /* XXX proxy address (optional) */
6342 /* set sadb_x_policy */
6344 m = key_setsadbxpolicy(sp->policy, sp->spidx.dir, sp->id);
6352 /* XXX identity (optional) */
6354 if (idexttype && fqdn) {
6355 /* create identity extension (FQDN) */
6356 struct sadb_ident *id;
6359 fqdnlen = strlen(fqdn) + 1; /* +1 for terminating-NUL */
6360 id = (struct sadb_ident *)p;
6361 bzero(id, sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
6362 id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
6363 id->sadb_ident_exttype = idexttype;
6364 id->sadb_ident_type = SADB_IDENTTYPE_FQDN;
6365 bcopy(fqdn, id + 1, fqdnlen);
6366 p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(fqdnlen);
6370 /* create identity extension (USERFQDN) */
6371 struct sadb_ident *id;
6375 /* +1 for terminating-NUL */
6376 userfqdnlen = strlen(userfqdn) + 1;
6379 id = (struct sadb_ident *)p;
6380 bzero(id, sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
6381 id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
6382 id->sadb_ident_exttype = idexttype;
6383 id->sadb_ident_type = SADB_IDENTTYPE_USERFQDN;
6384 /* XXX is it correct? */
6385 if (curproc && curproc->p_cred)
6386 id->sadb_ident_id = curproc->p_cred->p_ruid;
6387 if (userfqdn && userfqdnlen)
6388 bcopy(userfqdn, id + 1, userfqdnlen);
6389 p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(userfqdnlen);
6393 /* XXX sensitivity (optional) */
6395 /* create proposal/combination extension */
6396 m = key_getprop(saidx);
6399 * spec conformant: always attach proposal/combination extension,
6400 * the problem is that we have no way to attach it for ipcomp,
6401 * due to the way sadb_comb is declared in RFC2367.
6410 * outside of spec; make proposal/combination extension optional.
6416 if ((result->m_flags & M_PKTHDR) == 0) {
6421 if (result->m_len < sizeof(struct sadb_msg)) {
6422 result = m_pullup(result, sizeof(struct sadb_msg));
6423 if (result == NULL) {
6429 result->m_pkthdr.len = 0;
6430 for (m = result; m; m = m->m_next)
6431 result->m_pkthdr.len += m->m_len;
6433 mtod(result, struct sadb_msg *)->sadb_msg_len =
6434 PFKEY_UNIT64(result->m_pkthdr.len);
6436 return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
6444 static struct secacq *
6445 key_newacq(const struct secasindex *saidx)
6447 struct secacq *newacq;
6450 newacq = malloc(sizeof(struct secacq), M_IPSEC_SAQ, M_NOWAIT|M_ZERO);
6451 if (newacq == NULL) {
6452 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
6457 bcopy(saidx, &newacq->saidx, sizeof(newacq->saidx));
6458 newacq->seq = (V_acq_seq == ~0 ? 1 : ++V_acq_seq);
6459 newacq->created = time_second;
6462 /* add to acqtree */
6464 LIST_INSERT_HEAD(&V_acqtree, newacq, chain);
6470 static struct secacq *
6471 key_getacq(const struct secasindex *saidx)
6476 LIST_FOREACH(acq, &V_acqtree, chain) {
6477 if (key_cmpsaidx(saidx, &acq->saidx, CMP_EXACTLY))
6485 static struct secacq *
6486 key_getacqbyseq(seq)
6492 LIST_FOREACH(acq, &V_acqtree, chain) {
6493 if (acq->seq == seq)
6501 static struct secspacq *
6503 struct secpolicyindex *spidx;
6505 struct secspacq *acq;
6508 acq = malloc(sizeof(struct secspacq), M_IPSEC_SAQ, M_NOWAIT|M_ZERO);
6510 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
6515 bcopy(spidx, &acq->spidx, sizeof(acq->spidx));
6516 acq->created = time_second;
6519 /* add to spacqtree */
6521 LIST_INSERT_HEAD(&V_spacqtree, acq, chain);
6527 static struct secspacq *
6529 struct secpolicyindex *spidx;
6531 struct secspacq *acq;
6534 LIST_FOREACH(acq, &V_spacqtree, chain) {
6535 if (key_cmpspidx_exactly(spidx, &acq->spidx)) {
6536 /* NB: return holding spacq_lock */
6546 * SADB_ACQUIRE processing,
6547 * in first situation, is receiving
6549 * from the ikmpd, and clear sequence of its secasvar entry.
6551 * In second situation, is receiving
6552 * <base, address(SD), (address(P),) (identity(SD),) (sensitivity,) proposal>
6553 * from a user land process, and return
6554 * <base, address(SD), (address(P),) (identity(SD),) (sensitivity,) proposal>
6557 * m will always be freed.
6560 key_acquire2(so, m, mhp)
6563 const struct sadb_msghdr *mhp;
6565 const struct sadb_address *src0, *dst0;
6566 struct secasindex saidx;
6567 struct secashead *sah;
6571 IPSEC_ASSERT(so != NULL, ("null socket"));
6572 IPSEC_ASSERT(m != NULL, ("null mbuf"));
6573 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
6574 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
6577 * Error message from KMd.
6578 * We assume that if error was occured in IKEd, the length of PFKEY
6579 * message is equal to the size of sadb_msg structure.
6580 * We do not raise error even if error occured in this function.
6582 if (mhp->msg->sadb_msg_len == PFKEY_UNIT64(sizeof(struct sadb_msg))) {
6585 /* check sequence number */
6586 if (mhp->msg->sadb_msg_seq == 0) {
6587 ipseclog((LOG_DEBUG, "%s: must specify sequence "
6588 "number.\n", __func__));
6593 if ((acq = key_getacqbyseq(mhp->msg->sadb_msg_seq)) == NULL) {
6595 * the specified larval SA is already gone, or we got
6596 * a bogus sequence number. we can silently ignore it.
6602 /* reset acq counter in order to deletion by timehander. */
6603 acq->created = time_second;
6610 * This message is from user land.
6613 /* map satype to proto */
6614 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
6615 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
6617 return key_senderror(so, m, EINVAL);
6620 if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
6621 mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
6622 mhp->ext[SADB_EXT_PROPOSAL] == NULL) {
6624 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
6626 return key_senderror(so, m, EINVAL);
6628 if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
6629 mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
6630 mhp->extlen[SADB_EXT_PROPOSAL] < sizeof(struct sadb_prop)) {
6632 ipseclog((LOG_DEBUG, "%s: invalid message is passed.\n",
6634 return key_senderror(so, m, EINVAL);
6637 src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
6638 dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
6640 /* XXX boundary check against sa_len */
6641 KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
6644 * Make sure the port numbers are zero.
6645 * In case of NAT-T we will update them later if needed.
6647 KEY_PORTTOSADDR(&saidx.src, 0);
6648 KEY_PORTTOSADDR(&saidx.dst, 0);
6652 * Handle NAT-T info if present.
6655 if (mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL &&
6656 mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL) {
6657 struct sadb_x_nat_t_port *sport, *dport;
6659 if (mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport) ||
6660 mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport)) {
6661 ipseclog((LOG_DEBUG, "%s: invalid message.\n",
6663 return key_senderror(so, m, EINVAL);
6666 sport = (struct sadb_x_nat_t_port *)
6667 mhp->ext[SADB_X_EXT_NAT_T_SPORT];
6668 dport = (struct sadb_x_nat_t_port *)
6669 mhp->ext[SADB_X_EXT_NAT_T_DPORT];
6672 KEY_PORTTOSADDR(&saidx.src,
6673 sport->sadb_x_nat_t_port_port);
6675 KEY_PORTTOSADDR(&saidx.dst,
6676 dport->sadb_x_nat_t_port_port);
6680 /* get a SA index */
6682 LIST_FOREACH(sah, &V_sahtree, chain) {
6683 if (sah->state == SADB_SASTATE_DEAD)
6685 if (key_cmpsaidx(&sah->saidx, &saidx, CMP_MODE_REQID))
6690 ipseclog((LOG_DEBUG, "%s: a SA exists already.\n", __func__));
6691 return key_senderror(so, m, EEXIST);
6694 error = key_acquire(&saidx, NULL);
6696 ipseclog((LOG_DEBUG, "%s: error %d returned from key_acquire\n",
6697 __func__, mhp->msg->sadb_msg_errno));
6698 return key_senderror(so, m, error);
6701 return key_sendup_mbuf(so, m, KEY_SENDUP_REGISTERED);
6705 * SADB_REGISTER processing.
6706 * If SATYPE_UNSPEC has been passed as satype, only return sabd_supported.
6709 * from the ikmpd, and register a socket to send PF_KEY messages,
6713 * If socket is detached, must free from regnode.
6715 * m will always be freed.
6718 key_register(so, m, mhp)
6721 const struct sadb_msghdr *mhp;
6723 struct secreg *reg, *newreg = 0;
6725 IPSEC_ASSERT(so != NULL, ("null socket"));
6726 IPSEC_ASSERT(m != NULL, ("null mbuf"));
6727 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
6728 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
6730 /* check for invalid register message */
6731 if (mhp->msg->sadb_msg_satype >= sizeof(V_regtree)/sizeof(V_regtree[0]))
6732 return key_senderror(so, m, EINVAL);
6734 /* When SATYPE_UNSPEC is specified, only return sabd_supported. */
6735 if (mhp->msg->sadb_msg_satype == SADB_SATYPE_UNSPEC)
6738 /* check whether existing or not */
6740 LIST_FOREACH(reg, &V_regtree[mhp->msg->sadb_msg_satype], chain) {
6741 if (reg->so == so) {
6743 ipseclog((LOG_DEBUG, "%s: socket exists already.\n",
6745 return key_senderror(so, m, EEXIST);
6749 /* create regnode */
6750 newreg = malloc(sizeof(struct secreg), M_IPSEC_SAR, M_NOWAIT|M_ZERO);
6751 if (newreg == NULL) {
6753 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
6754 return key_senderror(so, m, ENOBUFS);
6758 ((struct keycb *)sotorawcb(so))->kp_registered++;
6760 /* add regnode to regtree. */
6761 LIST_INSERT_HEAD(&V_regtree[mhp->msg->sadb_msg_satype], newreg, chain);
6767 struct sadb_msg *newmsg;
6768 struct sadb_supported *sup;
6769 u_int len, alen, elen;
6772 struct sadb_alg *alg;
6774 /* create new sadb_msg to reply. */
6776 for (i = 1; i <= SADB_AALG_MAX; i++) {
6777 if (ah_algorithm_lookup(i))
6778 alen += sizeof(struct sadb_alg);
6781 alen += sizeof(struct sadb_supported);
6783 for (i = 1; i <= SADB_EALG_MAX; i++) {
6784 if (esp_algorithm_lookup(i))
6785 elen += sizeof(struct sadb_alg);
6788 elen += sizeof(struct sadb_supported);
6790 len = sizeof(struct sadb_msg) + alen + elen;
6793 return key_senderror(so, m, ENOBUFS);
6795 MGETHDR(n, M_DONTWAIT, MT_DATA);
6797 MCLGET(n, M_DONTWAIT);
6798 if ((n->m_flags & M_EXT) == 0) {
6804 return key_senderror(so, m, ENOBUFS);
6806 n->m_pkthdr.len = n->m_len = len;
6810 m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
6811 newmsg = mtod(n, struct sadb_msg *);
6812 newmsg->sadb_msg_errno = 0;
6813 newmsg->sadb_msg_len = PFKEY_UNIT64(len);
6814 off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
6816 /* for authentication algorithm */
6818 sup = (struct sadb_supported *)(mtod(n, caddr_t) + off);
6819 sup->sadb_supported_len = PFKEY_UNIT64(alen);
6820 sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_AUTH;
6821 off += PFKEY_ALIGN8(sizeof(*sup));
6823 for (i = 1; i <= SADB_AALG_MAX; i++) {
6824 struct auth_hash *aalgo;
6825 u_int16_t minkeysize, maxkeysize;
6827 aalgo = ah_algorithm_lookup(i);
6830 alg = (struct sadb_alg *)(mtod(n, caddr_t) + off);
6831 alg->sadb_alg_id = i;
6832 alg->sadb_alg_ivlen = 0;
6833 key_getsizes_ah(aalgo, i, &minkeysize, &maxkeysize);
6834 alg->sadb_alg_minbits = _BITS(minkeysize);
6835 alg->sadb_alg_maxbits = _BITS(maxkeysize);
6836 off += PFKEY_ALIGN8(sizeof(*alg));
6840 /* for encryption algorithm */
6842 sup = (struct sadb_supported *)(mtod(n, caddr_t) + off);
6843 sup->sadb_supported_len = PFKEY_UNIT64(elen);
6844 sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_ENCRYPT;
6845 off += PFKEY_ALIGN8(sizeof(*sup));
6847 for (i = 1; i <= SADB_EALG_MAX; i++) {
6848 struct enc_xform *ealgo;
6850 ealgo = esp_algorithm_lookup(i);
6853 alg = (struct sadb_alg *)(mtod(n, caddr_t) + off);
6854 alg->sadb_alg_id = i;
6855 alg->sadb_alg_ivlen = ealgo->blocksize;
6856 alg->sadb_alg_minbits = _BITS(ealgo->minkey);
6857 alg->sadb_alg_maxbits = _BITS(ealgo->maxkey);
6858 off += PFKEY_ALIGN8(sizeof(struct sadb_alg));
6862 IPSEC_ASSERT(off == len,
6863 ("length assumption failed (off %u len %u)", off, len));
6866 return key_sendup_mbuf(so, n, KEY_SENDUP_REGISTERED);
6871 * free secreg entry registered.
6872 * XXX: I want to do free a socket marked done SADB_RESIGER to socket.
6875 key_freereg(struct socket *so)
6880 IPSEC_ASSERT(so != NULL, ("NULL so"));
6883 * check whether existing or not.
6884 * check all type of SA, because there is a potential that
6885 * one socket is registered to multiple type of SA.
6888 for (i = 0; i <= SADB_SATYPE_MAX; i++) {
6889 LIST_FOREACH(reg, &V_regtree[i], chain) {
6890 if (reg->so == so && __LIST_CHAINED(reg)) {
6891 LIST_REMOVE(reg, chain);
6892 free(reg, M_IPSEC_SAR);
6901 * SADB_EXPIRE processing
6903 * <base, SA, SA2, lifetime(C and one of HS), address(SD)>
6905 * NOTE: We send only soft lifetime extension.
6908 * others : error number
6911 key_expire(struct secasvar *sav)
6915 struct mbuf *result = NULL, *m;
6918 struct sadb_lifetime *lt;
6920 /* XXX: Why do we lock ? */
6921 s = splnet(); /*called from softclock()*/
6923 IPSEC_ASSERT (sav != NULL, ("null sav"));
6924 IPSEC_ASSERT (sav->sah != NULL, ("null sa header"));
6926 /* set msg header */
6927 satype = key_proto2satype(sav->sah->saidx.proto);
6928 IPSEC_ASSERT(satype != 0, ("invalid proto, satype %u", satype));
6929 m = key_setsadbmsg(SADB_EXPIRE, 0, satype, sav->seq, 0, sav->refcnt);
6936 /* create SA extension */
6937 m = key_setsadbsa(sav);
6944 /* create SA extension */
6945 m = key_setsadbxsa2(sav->sah->saidx.mode,
6946 sav->replay ? sav->replay->count : 0,
6947 sav->sah->saidx.reqid);
6954 /* create lifetime extension (current and soft) */
6955 len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
6956 m = key_alloc_mbuf(len);
6957 if (!m || m->m_next) { /*XXX*/
6963 bzero(mtod(m, caddr_t), len);
6964 lt = mtod(m, struct sadb_lifetime *);
6965 lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
6966 lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
6967 lt->sadb_lifetime_allocations = sav->lft_c->allocations;
6968 lt->sadb_lifetime_bytes = sav->lft_c->bytes;
6969 lt->sadb_lifetime_addtime = sav->lft_c->addtime;
6970 lt->sadb_lifetime_usetime = sav->lft_c->usetime;
6971 lt = (struct sadb_lifetime *)(mtod(m, caddr_t) + len / 2);
6972 lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
6973 lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
6974 lt->sadb_lifetime_allocations = sav->lft_s->allocations;
6975 lt->sadb_lifetime_bytes = sav->lft_s->bytes;
6976 lt->sadb_lifetime_addtime = sav->lft_s->addtime;
6977 lt->sadb_lifetime_usetime = sav->lft_s->usetime;
6980 /* set sadb_address for source */
6981 m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
6982 &sav->sah->saidx.src.sa,
6983 FULLMASK, IPSEC_ULPROTO_ANY);
6990 /* set sadb_address for destination */
6991 m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
6992 &sav->sah->saidx.dst.sa,
6993 FULLMASK, IPSEC_ULPROTO_ANY);
7001 * XXX-BZ Handle NAT-T extensions here.
7004 if ((result->m_flags & M_PKTHDR) == 0) {
7009 if (result->m_len < sizeof(struct sadb_msg)) {
7010 result = m_pullup(result, sizeof(struct sadb_msg));
7011 if (result == NULL) {
7017 result->m_pkthdr.len = 0;
7018 for (m = result; m; m = m->m_next)
7019 result->m_pkthdr.len += m->m_len;
7021 mtod(result, struct sadb_msg *)->sadb_msg_len =
7022 PFKEY_UNIT64(result->m_pkthdr.len);
7025 return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
7035 * SADB_FLUSH processing
7038 * from the ikmpd, and free all entries in secastree.
7042 * NOTE: to do is only marking SADB_SASTATE_DEAD.
7044 * m will always be freed.
7047 key_flush(so, m, mhp)
7050 const struct sadb_msghdr *mhp;
7052 struct sadb_msg *newmsg;
7053 struct secashead *sah, *nextsah;
7054 struct secasvar *sav, *nextsav;
7059 IPSEC_ASSERT(so != NULL, ("null socket"));
7060 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
7061 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
7063 /* map satype to proto */
7064 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
7065 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
7067 return key_senderror(so, m, EINVAL);
7070 /* no SATYPE specified, i.e. flushing all SA. */
7072 for (sah = LIST_FIRST(&V_sahtree);
7075 nextsah = LIST_NEXT(sah, chain);
7077 if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC
7078 && proto != sah->saidx.proto)
7082 stateidx < _ARRAYLEN(saorder_state_alive);
7084 state = saorder_state_any[stateidx];
7085 for (sav = LIST_FIRST(&sah->savtree[state]);
7089 nextsav = LIST_NEXT(sav, chain);
7091 key_sa_chgstate(sav, SADB_SASTATE_DEAD);
7096 sah->state = SADB_SASTATE_DEAD;
7100 if (m->m_len < sizeof(struct sadb_msg) ||
7101 sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
7102 ipseclog((LOG_DEBUG, "%s: No more memory.\n", __func__));
7103 return key_senderror(so, m, ENOBUFS);
7109 m->m_pkthdr.len = m->m_len = sizeof(struct sadb_msg);
7110 newmsg = mtod(m, struct sadb_msg *);
7111 newmsg->sadb_msg_errno = 0;
7112 newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
7114 return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
7118 * SADB_DUMP processing
7119 * dump all entries including status of DEAD in SAD.
7122 * from the ikmpd, and dump all secasvar leaves
7127 * m will always be freed.
7130 key_dump(so, m, mhp)
7133 const struct sadb_msghdr *mhp;
7135 struct secashead *sah;
7136 struct secasvar *sav;
7142 struct sadb_msg *newmsg;
7145 IPSEC_ASSERT(so != NULL, ("null socket"));
7146 IPSEC_ASSERT(m != NULL, ("null mbuf"));
7147 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
7148 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
7150 /* map satype to proto */
7151 if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
7152 ipseclog((LOG_DEBUG, "%s: invalid satype is passed.\n",
7154 return key_senderror(so, m, EINVAL);
7157 /* count sav entries to be sent to the userland. */
7160 LIST_FOREACH(sah, &V_sahtree, chain) {
7161 if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC
7162 && proto != sah->saidx.proto)
7166 stateidx < _ARRAYLEN(saorder_state_any);
7168 state = saorder_state_any[stateidx];
7169 LIST_FOREACH(sav, &sah->savtree[state], chain) {
7177 return key_senderror(so, m, ENOENT);
7180 /* send this to the userland, one at a time. */
7182 LIST_FOREACH(sah, &V_sahtree, chain) {
7183 if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC
7184 && proto != sah->saidx.proto)
7187 /* map proto to satype */
7188 if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
7190 ipseclog((LOG_DEBUG, "%s: there was invalid proto in "
7191 "SAD.\n", __func__));
7192 return key_senderror(so, m, EINVAL);
7196 stateidx < _ARRAYLEN(saorder_state_any);
7198 state = saorder_state_any[stateidx];
7199 LIST_FOREACH(sav, &sah->savtree[state], chain) {
7200 n = key_setdumpsa(sav, SADB_DUMP, satype,
7201 --cnt, mhp->msg->sadb_msg_pid);
7204 return key_senderror(so, m, ENOBUFS);
7206 key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
7217 * SADB_X_PROMISC processing
7219 * m will always be freed.
7222 key_promisc(so, m, mhp)
7225 const struct sadb_msghdr *mhp;
7229 IPSEC_ASSERT(so != NULL, ("null socket"));
7230 IPSEC_ASSERT(m != NULL, ("null mbuf"));
7231 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
7232 IPSEC_ASSERT(mhp->msg != NULL, ("null msg"));
7234 olen = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
7236 if (olen < sizeof(struct sadb_msg)) {
7238 return key_senderror(so, m, EINVAL);
7243 } else if (olen == sizeof(struct sadb_msg)) {
7244 /* enable/disable promisc mode */
7247 if ((kp = (struct keycb *)sotorawcb(so)) == NULL)
7248 return key_senderror(so, m, EINVAL);
7249 mhp->msg->sadb_msg_errno = 0;
7250 switch (mhp->msg->sadb_msg_satype) {
7253 kp->kp_promisc = mhp->msg->sadb_msg_satype;
7256 return key_senderror(so, m, EINVAL);
7259 /* send the original message back to everyone */
7260 mhp->msg->sadb_msg_errno = 0;
7261 return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
7263 /* send packet as is */
7265 m_adj(m, PFKEY_ALIGN8(sizeof(struct sadb_msg)));
7267 /* TODO: if sadb_msg_seq is specified, send to specific pid */
7268 return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
7272 static int (*key_typesw[]) __P((struct socket *, struct mbuf *,
7273 const struct sadb_msghdr *)) = {
7274 NULL, /* SADB_RESERVED */
7275 key_getspi, /* SADB_GETSPI */
7276 key_update, /* SADB_UPDATE */
7277 key_add, /* SADB_ADD */
7278 key_delete, /* SADB_DELETE */
7279 key_get, /* SADB_GET */
7280 key_acquire2, /* SADB_ACQUIRE */
7281 key_register, /* SADB_REGISTER */
7282 NULL, /* SADB_EXPIRE */
7283 key_flush, /* SADB_FLUSH */
7284 key_dump, /* SADB_DUMP */
7285 key_promisc, /* SADB_X_PROMISC */
7286 NULL, /* SADB_X_PCHANGE */
7287 key_spdadd, /* SADB_X_SPDUPDATE */
7288 key_spdadd, /* SADB_X_SPDADD */
7289 key_spddelete, /* SADB_X_SPDDELETE */
7290 key_spdget, /* SADB_X_SPDGET */
7291 NULL, /* SADB_X_SPDACQUIRE */
7292 key_spddump, /* SADB_X_SPDDUMP */
7293 key_spdflush, /* SADB_X_SPDFLUSH */
7294 key_spdadd, /* SADB_X_SPDSETIDX */
7295 NULL, /* SADB_X_SPDEXPIRE */
7296 key_spddelete2, /* SADB_X_SPDDELETE2 */
7300 * parse sadb_msg buffer to process PFKEYv2,
7301 * and create a data to response if needed.
7302 * I think to be dealed with mbuf directly.
7304 * msgp : pointer to pointer to a received buffer pulluped.
7305 * This is rewrited to response.
7306 * so : pointer to socket.
7308 * length for buffer to send to user process.
7315 struct sadb_msg *msg;
7316 struct sadb_msghdr mh;
7321 IPSEC_ASSERT(so != NULL, ("null socket"));
7322 IPSEC_ASSERT(m != NULL, ("null mbuf"));
7324 #if 0 /*kdebug_sadb assumes msg in linear buffer*/
7325 KEYDEBUG(KEYDEBUG_KEY_DUMP,
7326 ipseclog((LOG_DEBUG, "%s: passed sadb_msg\n", __func__));
7330 if (m->m_len < sizeof(struct sadb_msg)) {
7331 m = m_pullup(m, sizeof(struct sadb_msg));
7335 msg = mtod(m, struct sadb_msg *);
7336 orglen = PFKEY_UNUNIT64(msg->sadb_msg_len);
7337 target = KEY_SENDUP_ONE;
7339 if ((m->m_flags & M_PKTHDR) == 0 ||
7340 m->m_pkthdr.len != m->m_pkthdr.len) {
7341 ipseclog((LOG_DEBUG, "%s: invalid message length.\n",__func__));
7342 V_pfkeystat.out_invlen++;
7347 if (msg->sadb_msg_version != PF_KEY_V2) {
7348 ipseclog((LOG_DEBUG, "%s: PF_KEY version %u is mismatched.\n",
7349 __func__, msg->sadb_msg_version));
7350 V_pfkeystat.out_invver++;
7355 if (msg->sadb_msg_type > SADB_MAX) {
7356 ipseclog((LOG_DEBUG, "%s: invalid type %u is passed.\n",
7357 __func__, msg->sadb_msg_type));
7358 V_pfkeystat.out_invmsgtype++;
7363 /* for old-fashioned code - should be nuked */
7364 if (m->m_pkthdr.len > MCLBYTES) {
7371 MGETHDR(n, M_DONTWAIT, MT_DATA);
7372 if (n && m->m_pkthdr.len > MHLEN) {
7373 MCLGET(n, M_DONTWAIT);
7374 if ((n->m_flags & M_EXT) == 0) {
7383 m_copydata(m, 0, m->m_pkthdr.len, mtod(n, caddr_t));
7384 n->m_pkthdr.len = n->m_len = m->m_pkthdr.len;
7390 /* align the mbuf chain so that extensions are in contiguous region. */
7391 error = key_align(m, &mh);
7398 switch (msg->sadb_msg_satype) {
7399 case SADB_SATYPE_UNSPEC:
7400 switch (msg->sadb_msg_type) {
7408 ipseclog((LOG_DEBUG, "%s: must specify satype "
7409 "when msg type=%u.\n", __func__,
7410 msg->sadb_msg_type));
7411 V_pfkeystat.out_invsatype++;
7416 case SADB_SATYPE_AH:
7417 case SADB_SATYPE_ESP:
7418 case SADB_X_SATYPE_IPCOMP:
7419 case SADB_X_SATYPE_TCPSIGNATURE:
7420 switch (msg->sadb_msg_type) {
7422 case SADB_X_SPDDELETE:
7424 case SADB_X_SPDDUMP:
7425 case SADB_X_SPDFLUSH:
7426 case SADB_X_SPDSETIDX:
7427 case SADB_X_SPDUPDATE:
7428 case SADB_X_SPDDELETE2:
7429 ipseclog((LOG_DEBUG, "%s: illegal satype=%u\n",
7430 __func__, msg->sadb_msg_type));
7431 V_pfkeystat.out_invsatype++;
7436 case SADB_SATYPE_RSVP:
7437 case SADB_SATYPE_OSPFV2:
7438 case SADB_SATYPE_RIPV2:
7439 case SADB_SATYPE_MIP:
7440 ipseclog((LOG_DEBUG, "%s: type %u isn't supported.\n",
7441 __func__, msg->sadb_msg_satype));
7442 V_pfkeystat.out_invsatype++;
7445 case 1: /* XXX: What does it do? */
7446 if (msg->sadb_msg_type == SADB_X_PROMISC)
7450 ipseclog((LOG_DEBUG, "%s: invalid type %u is passed.\n",
7451 __func__, msg->sadb_msg_satype));
7452 V_pfkeystat.out_invsatype++;
7457 /* check field of upper layer protocol and address family */
7458 if (mh.ext[SADB_EXT_ADDRESS_SRC] != NULL
7459 && mh.ext[SADB_EXT_ADDRESS_DST] != NULL) {
7460 struct sadb_address *src0, *dst0;
7463 src0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_SRC]);
7464 dst0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_DST]);
7466 /* check upper layer protocol */
7467 if (src0->sadb_address_proto != dst0->sadb_address_proto) {
7468 ipseclog((LOG_DEBUG, "%s: upper layer protocol "
7469 "mismatched.\n", __func__));
7470 V_pfkeystat.out_invaddr++;
7476 if (PFKEY_ADDR_SADDR(src0)->sa_family !=
7477 PFKEY_ADDR_SADDR(dst0)->sa_family) {
7478 ipseclog((LOG_DEBUG, "%s: address family mismatched.\n",
7480 V_pfkeystat.out_invaddr++;
7484 if (PFKEY_ADDR_SADDR(src0)->sa_len !=
7485 PFKEY_ADDR_SADDR(dst0)->sa_len) {
7486 ipseclog((LOG_DEBUG, "%s: address struct size "
7487 "mismatched.\n", __func__));
7488 V_pfkeystat.out_invaddr++;
7493 switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
7495 if (PFKEY_ADDR_SADDR(src0)->sa_len !=
7496 sizeof(struct sockaddr_in)) {
7497 V_pfkeystat.out_invaddr++;
7503 if (PFKEY_ADDR_SADDR(src0)->sa_len !=
7504 sizeof(struct sockaddr_in6)) {
7505 V_pfkeystat.out_invaddr++;
7511 ipseclog((LOG_DEBUG, "%s: unsupported address family\n",
7513 V_pfkeystat.out_invaddr++;
7514 error = EAFNOSUPPORT;
7518 switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
7520 plen = sizeof(struct in_addr) << 3;
7523 plen = sizeof(struct in6_addr) << 3;
7526 plen = 0; /*fool gcc*/
7530 /* check max prefix length */
7531 if (src0->sadb_address_prefixlen > plen ||
7532 dst0->sadb_address_prefixlen > plen) {
7533 ipseclog((LOG_DEBUG, "%s: illegal prefixlen.\n",
7535 V_pfkeystat.out_invaddr++;
7541 * prefixlen == 0 is valid because there can be a case when
7542 * all addresses are matched.
7546 if (msg->sadb_msg_type >= sizeof(key_typesw)/sizeof(key_typesw[0]) ||
7547 key_typesw[msg->sadb_msg_type] == NULL) {
7548 V_pfkeystat.out_invmsgtype++;
7553 return (*key_typesw[msg->sadb_msg_type])(so, m, &mh);
7556 msg->sadb_msg_errno = error;
7557 return key_sendup_mbuf(so, m, target);
7561 key_senderror(so, m, code)
7566 struct sadb_msg *msg;
7568 IPSEC_ASSERT(m->m_len >= sizeof(struct sadb_msg),
7569 ("mbuf too small, len %u", m->m_len));
7571 msg = mtod(m, struct sadb_msg *);
7572 msg->sadb_msg_errno = code;
7573 return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
7577 * set the pointer to each header into message buffer.
7578 * m will be freed on error.
7579 * XXX larger-than-MCLBYTES extension?
7584 struct sadb_msghdr *mhp;
7587 struct sadb_ext *ext;
7592 IPSEC_ASSERT(m != NULL, ("null mbuf"));
7593 IPSEC_ASSERT(mhp != NULL, ("null msghdr"));
7594 IPSEC_ASSERT(m->m_len >= sizeof(struct sadb_msg),
7595 ("mbuf too small, len %u", m->m_len));
7598 bzero(mhp, sizeof(*mhp));
7600 mhp->msg = mtod(m, struct sadb_msg *);
7601 mhp->ext[0] = (struct sadb_ext *)mhp->msg; /*XXX backward compat */
7603 end = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
7604 extlen = end; /*just in case extlen is not updated*/
7605 for (off = sizeof(struct sadb_msg); off < end; off += extlen) {
7606 n = m_pulldown(m, off, sizeof(struct sadb_ext), &toff);
7608 /* m is already freed */
7611 ext = (struct sadb_ext *)(mtod(n, caddr_t) + toff);
7614 switch (ext->sadb_ext_type) {
7616 case SADB_EXT_ADDRESS_SRC:
7617 case SADB_EXT_ADDRESS_DST:
7618 case SADB_EXT_ADDRESS_PROXY:
7619 case SADB_EXT_LIFETIME_CURRENT:
7620 case SADB_EXT_LIFETIME_HARD:
7621 case SADB_EXT_LIFETIME_SOFT:
7622 case SADB_EXT_KEY_AUTH:
7623 case SADB_EXT_KEY_ENCRYPT:
7624 case SADB_EXT_IDENTITY_SRC:
7625 case SADB_EXT_IDENTITY_DST:
7626 case SADB_EXT_SENSITIVITY:
7627 case SADB_EXT_PROPOSAL:
7628 case SADB_EXT_SUPPORTED_AUTH:
7629 case SADB_EXT_SUPPORTED_ENCRYPT:
7630 case SADB_EXT_SPIRANGE:
7631 case SADB_X_EXT_POLICY:
7632 case SADB_X_EXT_SA2:
7634 case SADB_X_EXT_NAT_T_TYPE:
7635 case SADB_X_EXT_NAT_T_SPORT:
7636 case SADB_X_EXT_NAT_T_DPORT:
7637 case SADB_X_EXT_NAT_T_OAI:
7638 case SADB_X_EXT_NAT_T_OAR:
7639 case SADB_X_EXT_NAT_T_FRAG:
7641 /* duplicate check */
7643 * XXX Are there duplication payloads of either
7644 * KEY_AUTH or KEY_ENCRYPT ?
7646 if (mhp->ext[ext->sadb_ext_type] != NULL) {
7647 ipseclog((LOG_DEBUG, "%s: duplicate ext_type "
7648 "%u\n", __func__, ext->sadb_ext_type));
7650 V_pfkeystat.out_dupext++;
7655 ipseclog((LOG_DEBUG, "%s: invalid ext_type %u\n",
7656 __func__, ext->sadb_ext_type));
7658 V_pfkeystat.out_invexttype++;
7662 extlen = PFKEY_UNUNIT64(ext->sadb_ext_len);
7664 if (key_validate_ext(ext, extlen)) {
7666 V_pfkeystat.out_invlen++;
7670 n = m_pulldown(m, off, extlen, &toff);
7672 /* m is already freed */
7675 ext = (struct sadb_ext *)(mtod(n, caddr_t) + toff);
7677 mhp->ext[ext->sadb_ext_type] = ext;
7678 mhp->extoff[ext->sadb_ext_type] = off;
7679 mhp->extlen[ext->sadb_ext_type] = extlen;
7684 V_pfkeystat.out_invlen++;
7692 key_validate_ext(ext, len)
7693 const struct sadb_ext *ext;
7696 const struct sockaddr *sa;
7697 enum { NONE, ADDR } checktype = NONE;
7699 const int sal = offsetof(struct sockaddr, sa_len) + sizeof(sa->sa_len);
7701 if (len != PFKEY_UNUNIT64(ext->sadb_ext_len))
7704 /* if it does not match minimum/maximum length, bail */
7705 if (ext->sadb_ext_type >= sizeof(minsize) / sizeof(minsize[0]) ||
7706 ext->sadb_ext_type >= sizeof(maxsize) / sizeof(maxsize[0]))
7708 if (!minsize[ext->sadb_ext_type] || len < minsize[ext->sadb_ext_type])
7710 if (maxsize[ext->sadb_ext_type] && len > maxsize[ext->sadb_ext_type])
7713 /* more checks based on sadb_ext_type XXX need more */
7714 switch (ext->sadb_ext_type) {
7715 case SADB_EXT_ADDRESS_SRC:
7716 case SADB_EXT_ADDRESS_DST:
7717 case SADB_EXT_ADDRESS_PROXY:
7718 baselen = PFKEY_ALIGN8(sizeof(struct sadb_address));
7721 case SADB_EXT_IDENTITY_SRC:
7722 case SADB_EXT_IDENTITY_DST:
7723 if (((const struct sadb_ident *)ext)->sadb_ident_type ==
7724 SADB_X_IDENTTYPE_ADDR) {
7725 baselen = PFKEY_ALIGN8(sizeof(struct sadb_ident));
7735 switch (checktype) {
7739 sa = (const struct sockaddr *)(((const u_int8_t*)ext)+baselen);
7740 if (len < baselen + sal)
7742 if (baselen + PFKEY_ALIGN8(sa->sa_len) != len)
7755 for (i = 0; i < IPSEC_DIR_MAX; i++)
7756 LIST_INIT(&V_sptree[i]);
7758 LIST_INIT(&V_sahtree);
7760 for (i = 0; i <= SADB_SATYPE_MAX; i++)
7761 LIST_INIT(&V_regtree[i]);
7763 LIST_INIT(&V_acqtree);
7764 LIST_INIT(&V_spacqtree);
7766 /* system default */
7767 V_ip4_def_policy.policy = IPSEC_POLICY_NONE;
7768 V_ip4_def_policy.refcnt++; /*never reclaim this*/
7770 if (!IS_DEFAULT_VNET(curvnet))
7774 REGTREE_LOCK_INIT();
7775 SAHTREE_LOCK_INIT();
7779 #ifndef IPSEC_DEBUG2
7780 timeout((void *)key_timehandler, (void *)0, hz);
7781 #endif /*IPSEC_DEBUG2*/
7783 /* initialize key statistics */
7784 keystat.getspi_count = 1;
7786 printf("IPsec: Initialized Security Association Processing.\n");
7793 struct secpolicy *sp, *nextsp;
7794 struct secacq *acq, *nextacq;
7795 struct secspacq *spacq, *nextspacq;
7796 struct secashead *sah, *nextsah;
7801 for (i = 0; i < IPSEC_DIR_MAX; i++) {
7802 for (sp = LIST_FIRST(&V_sptree[i]);
7803 sp != NULL; sp = nextsp) {
7804 nextsp = LIST_NEXT(sp, chain);
7805 if (__LIST_CHAINED(sp)) {
7806 LIST_REMOVE(sp, chain);
7807 free(sp, M_IPSEC_SP);
7814 for (sah = LIST_FIRST(&V_sahtree); sah != NULL; sah = nextsah) {
7815 nextsah = LIST_NEXT(sah, chain);
7816 if (__LIST_CHAINED(sah)) {
7817 LIST_REMOVE(sah, chain);
7818 free(sah, M_IPSEC_SAH);
7824 for (i = 0; i <= SADB_SATYPE_MAX; i++) {
7825 LIST_FOREACH(reg, &V_regtree[i], chain) {
7826 if (__LIST_CHAINED(reg)) {
7827 LIST_REMOVE(reg, chain);
7828 free(reg, M_IPSEC_SAR);
7836 for (acq = LIST_FIRST(&V_acqtree); acq != NULL; acq = nextacq) {
7837 nextacq = LIST_NEXT(acq, chain);
7838 if (__LIST_CHAINED(acq)) {
7839 LIST_REMOVE(acq, chain);
7840 free(acq, M_IPSEC_SAQ);
7846 for (spacq = LIST_FIRST(&V_spacqtree); spacq != NULL;
7847 spacq = nextspacq) {
7848 nextspacq = LIST_NEXT(spacq, chain);
7849 if (__LIST_CHAINED(spacq)) {
7850 LIST_REMOVE(spacq, chain);
7851 free(spacq, M_IPSEC_SAQ);
7859 * XXX: maybe This function is called after INBOUND IPsec processing.
7861 * Special check for tunnel-mode packets.
7862 * We must make some checks for consistency between inner and outer IP header.
7864 * xxx more checks to be provided
7867 key_checktunnelsanity(sav, family, src, dst)
7868 struct secasvar *sav;
7873 IPSEC_ASSERT(sav->sah != NULL, ("null SA header"));
7875 /* XXX: check inner IP header */
7880 /* record data transfer on SA, and update timestamps */
7882 key_sa_recordxfer(sav, m)
7883 struct secasvar *sav;
7886 IPSEC_ASSERT(sav != NULL, ("Null secasvar"));
7887 IPSEC_ASSERT(m != NULL, ("Null mbuf"));
7892 * XXX Currently, there is a difference of bytes size
7893 * between inbound and outbound processing.
7895 sav->lft_c->bytes += m->m_pkthdr.len;
7896 /* to check bytes lifetime is done in key_timehandler(). */
7899 * We use the number of packets as the unit of
7900 * allocations. We increment the variable
7901 * whenever {esp,ah}_{in,out}put is called.
7903 sav->lft_c->allocations++;
7904 /* XXX check for expires? */
7907 * NOTE: We record CURRENT usetime by using wall clock,
7908 * in seconds. HARD and SOFT lifetime are measured by the time
7909 * difference (again in seconds) from usetime.
7913 * -----+-----+--------+---> t
7914 * <--------------> HARD
7917 sav->lft_c->usetime = time_second;
7918 /* XXX check for expires? */
7925 key_sa_routechange(dst)
7926 struct sockaddr *dst;
7928 struct secashead *sah;
7932 LIST_FOREACH(sah, &V_sahtree, chain) {
7933 ro = &sah->route_cache.sa_route;
7934 if (ro->ro_rt && dst->sa_len == ro->ro_dst.sa_len
7935 && bcmp(dst, &ro->ro_dst, dst->sa_len) == 0) {
7937 ro->ro_rt = (struct rtentry *)NULL;
7944 key_sa_chgstate(struct secasvar *sav, u_int8_t state)
7946 IPSEC_ASSERT(sav != NULL, ("NULL sav"));
7947 SAHTREE_LOCK_ASSERT();
7949 if (sav->state != state) {
7950 if (__LIST_CHAINED(sav))
7951 LIST_REMOVE(sav, chain);
7953 LIST_INSERT_HEAD(&sav->sah->savtree[state], sav, chain);
7959 struct secasvar *sav;
7962 IPSEC_ASSERT(sav->iv != NULL, ("null IV"));
7963 key_randomfill(sav->iv, sav->ivlen);
7967 static struct mbuf *
7971 struct mbuf *m = NULL, *n;
7976 MGET(n, M_DONTWAIT, MT_DATA);
7977 if (n && len > MLEN)
7978 MCLGET(n, M_DONTWAIT);
7986 n->m_len = M_TRAILINGSPACE(n);
7987 /* use the bottom of mbuf, hoping we can prepend afterwards */
7988 if (n->m_len > len) {
7989 t = (n->m_len - len) & ~(sizeof(long) - 1);
8006 * Take one of the kernel's security keys and convert it into a PF_KEY
8007 * structure within an mbuf, suitable for sending up to a waiting
8008 * application in user land.
8011 * src: A pointer to a kernel security key.
8012 * exttype: Which type of key this is. Refer to the PF_KEY data structures.
8014 * a valid mbuf or NULL indicating an error
8018 static struct mbuf *
8019 key_setkey(struct seckey *src, u_int16_t exttype)
8028 len = PFKEY_ALIGN8(sizeof(struct sadb_key) + _KEYLEN(src));
8029 m = key_alloc_mbuf(len);
8032 p = mtod(m, struct sadb_key *);
8034 p->sadb_key_len = PFKEY_UNIT64(len);
8035 p->sadb_key_exttype = exttype;
8036 p->sadb_key_bits = src->bits;
8037 bcopy(src->key_data, _KEYBUF(p), _KEYLEN(src));
8043 * Take one of the kernel's lifetime data structures and convert it
8044 * into a PF_KEY structure within an mbuf, suitable for sending up to
8045 * a waiting application in user land.
8048 * src: A pointer to a kernel lifetime structure.
8049 * exttype: Which type of lifetime this is. Refer to the PF_KEY
8050 * data structures for more information.
8052 * a valid mbuf or NULL indicating an error
8056 static struct mbuf *
8057 key_setlifetime(struct seclifetime *src, u_int16_t exttype)
8059 struct mbuf *m = NULL;
8060 struct sadb_lifetime *p;
8061 int len = PFKEY_ALIGN8(sizeof(struct sadb_lifetime));
8066 m = key_alloc_mbuf(len);
8069 p = mtod(m, struct sadb_lifetime *);
8072 p->sadb_lifetime_len = PFKEY_UNIT64(len);
8073 p->sadb_lifetime_exttype = exttype;
8074 p->sadb_lifetime_allocations = src->allocations;
8075 p->sadb_lifetime_bytes = src->bytes;
8076 p->sadb_lifetime_addtime = src->addtime;
8077 p->sadb_lifetime_usetime = src->usetime;