key.c revision 1.53 1 1.53 ad /* $NetBSD: key.c,v 1.53 2008/04/24 11:38:38 ad Exp $ */
2 1.12 jonathan /* $FreeBSD: src/sys/netipsec/key.c,v 1.3.2.3 2004/02/14 22:23:23 bms Exp $ */
3 1.1 jonathan /* $KAME: key.c,v 1.191 2001/06/27 10:46:49 sakane Exp $ */
4 1.48 degroote
5 1.1 jonathan /*
6 1.1 jonathan * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
7 1.1 jonathan * All rights reserved.
8 1.1 jonathan *
9 1.1 jonathan * Redistribution and use in source and binary forms, with or without
10 1.1 jonathan * modification, are permitted provided that the following conditions
11 1.1 jonathan * are met:
12 1.1 jonathan * 1. Redistributions of source code must retain the above copyright
13 1.1 jonathan * notice, this list of conditions and the following disclaimer.
14 1.1 jonathan * 2. Redistributions in binary form must reproduce the above copyright
15 1.1 jonathan * notice, this list of conditions and the following disclaimer in the
16 1.1 jonathan * documentation and/or other materials provided with the distribution.
17 1.1 jonathan * 3. Neither the name of the project nor the names of its contributors
18 1.1 jonathan * may be used to endorse or promote products derived from this software
19 1.1 jonathan * without specific prior written permission.
20 1.1 jonathan *
21 1.1 jonathan * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22 1.1 jonathan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 1.1 jonathan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 1.1 jonathan * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25 1.1 jonathan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 1.1 jonathan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 1.1 jonathan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 1.1 jonathan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 1.1 jonathan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 1.1 jonathan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 1.1 jonathan * SUCH DAMAGE.
32 1.1 jonathan */
33 1.1 jonathan
34 1.1 jonathan #include <sys/cdefs.h>
35 1.53 ad __KERNEL_RCSID(0, "$NetBSD: key.c,v 1.53 2008/04/24 11:38:38 ad Exp $");
36 1.1 jonathan
37 1.1 jonathan /*
38 1.1 jonathan * This code is referd to RFC 2367
39 1.1 jonathan */
40 1.1 jonathan
41 1.1 jonathan #include "opt_inet.h"
42 1.2 jonathan #ifdef __FreeBSD__
43 1.1 jonathan #include "opt_inet6.h"
44 1.2 jonathan #endif
45 1.1 jonathan #include "opt_ipsec.h"
46 1.6 scw #ifdef __NetBSD__
47 1.6 scw #include "opt_gateway.h"
48 1.6 scw #endif
49 1.1 jonathan
50 1.1 jonathan #include <sys/types.h>
51 1.1 jonathan #include <sys/param.h>
52 1.1 jonathan #include <sys/systm.h>
53 1.1 jonathan #include <sys/callout.h>
54 1.1 jonathan #include <sys/kernel.h>
55 1.1 jonathan #include <sys/mbuf.h>
56 1.1 jonathan #include <sys/domain.h>
57 1.1 jonathan #include <sys/protosw.h>
58 1.1 jonathan #include <sys/malloc.h>
59 1.1 jonathan #include <sys/socket.h>
60 1.1 jonathan #include <sys/socketvar.h>
61 1.1 jonathan #include <sys/sysctl.h>
62 1.1 jonathan #include <sys/errno.h>
63 1.1 jonathan #include <sys/proc.h>
64 1.1 jonathan #include <sys/queue.h>
65 1.1 jonathan #include <sys/syslog.h>
66 1.52 thorpej #include <sys/once.h>
67 1.1 jonathan
68 1.1 jonathan #include <net/if.h>
69 1.1 jonathan #include <net/route.h>
70 1.1 jonathan #include <net/raw_cb.h>
71 1.1 jonathan
72 1.1 jonathan #include <netinet/in.h>
73 1.1 jonathan #include <netinet/in_systm.h>
74 1.1 jonathan #include <netinet/ip.h>
75 1.1 jonathan #include <netinet/in_var.h>
76 1.6 scw #ifdef INET
77 1.6 scw #include <netinet/ip_var.h>
78 1.6 scw #endif
79 1.1 jonathan
80 1.1 jonathan #ifdef INET6
81 1.1 jonathan #include <netinet/ip6.h>
82 1.1 jonathan #include <netinet6/in6_var.h>
83 1.1 jonathan #include <netinet6/ip6_var.h>
84 1.1 jonathan #endif /* INET6 */
85 1.1 jonathan
86 1.1 jonathan #ifdef INET
87 1.1 jonathan #include <netinet/in_pcb.h>
88 1.1 jonathan #endif
89 1.1 jonathan #ifdef INET6
90 1.1 jonathan #include <netinet6/in6_pcb.h>
91 1.1 jonathan #endif /* INET6 */
92 1.1 jonathan
93 1.1 jonathan #include <net/pfkeyv2.h>
94 1.1 jonathan #include <netipsec/keydb.h>
95 1.1 jonathan #include <netipsec/key.h>
96 1.1 jonathan #include <netipsec/keysock.h>
97 1.1 jonathan #include <netipsec/key_debug.h>
98 1.1 jonathan
99 1.1 jonathan #include <netipsec/ipsec.h>
100 1.1 jonathan #ifdef INET6
101 1.1 jonathan #include <netipsec/ipsec6.h>
102 1.1 jonathan #endif
103 1.52 thorpej #include <netipsec/ipsec_private.h>
104 1.1 jonathan
105 1.1 jonathan #include <netipsec/xform.h>
106 1.1 jonathan #include <netipsec/ipsec_osdep.h>
107 1.33 degroote #include <netipsec/ipcomp.h>
108 1.33 degroote
109 1.1 jonathan
110 1.1 jonathan #include <machine/stdarg.h>
111 1.1 jonathan
112 1.1 jonathan
113 1.1 jonathan #include <net/net_osdep.h>
114 1.1 jonathan
115 1.1 jonathan #define FULLMASK 0xff
116 1.1 jonathan #define _BITS(bytes) ((bytes) << 3)
117 1.1 jonathan
118 1.52 thorpej percpu_t *pfkeystat_percpu;
119 1.52 thorpej
120 1.1 jonathan /*
121 1.1 jonathan * Note on SA reference counting:
122 1.1 jonathan * - SAs that are not in DEAD state will have (total external reference + 1)
123 1.1 jonathan * following value in reference count field. they cannot be freed and are
124 1.1 jonathan * referenced from SA header.
125 1.1 jonathan * - SAs that are in DEAD state will have (total external reference)
126 1.1 jonathan * in reference count field. they are ready to be freed. reference from
127 1.1 jonathan * SA header will be removed in key_delsav(), when the reference count
128 1.1 jonathan * field hits 0 (= no external reference other than from SA header.
129 1.1 jonathan */
130 1.1 jonathan
131 1.1 jonathan u_int32_t key_debug_level = 0;
132 1.1 jonathan static u_int key_spi_trycnt = 1000;
133 1.1 jonathan static u_int32_t key_spi_minval = 0x100;
134 1.1 jonathan static u_int32_t key_spi_maxval = 0x0fffffff; /* XXX */
135 1.1 jonathan static u_int32_t policy_id = 0;
136 1.1 jonathan static u_int key_int_random = 60; /*interval to initialize randseed,1(m)*/
137 1.1 jonathan static u_int key_larval_lifetime = 30; /* interval to expire acquiring, 30(s)*/
138 1.1 jonathan static int key_blockacq_count = 10; /* counter for blocking SADB_ACQUIRE.*/
139 1.1 jonathan static int key_blockacq_lifetime = 20; /* lifetime for blocking SADB_ACQUIRE.*/
140 1.17 jonathan static int key_prefered_oldsa = 0; /* prefered old sa rather than new sa.*/
141 1.1 jonathan
142 1.1 jonathan static u_int32_t acq_seq = 0;
143 1.1 jonathan static int key_tick_init_random = 0;
144 1.1 jonathan
145 1.1 jonathan static LIST_HEAD(_sptree, secpolicy) sptree[IPSEC_DIR_MAX]; /* SPD */
146 1.1 jonathan static LIST_HEAD(_sahtree, secashead) sahtree; /* SAD */
147 1.1 jonathan static LIST_HEAD(_regtree, secreg) regtree[SADB_SATYPE_MAX + 1];
148 1.1 jonathan /* registed list */
149 1.1 jonathan #ifndef IPSEC_NONBLOCK_ACQUIRE
150 1.1 jonathan static LIST_HEAD(_acqtree, secacq) acqtree; /* acquiring list */
151 1.1 jonathan #endif
152 1.1 jonathan static LIST_HEAD(_spacqtree, secspacq) spacqtree; /* SP acquiring list */
153 1.1 jonathan
154 1.1 jonathan /* search order for SAs */
155 1.1 jonathan static u_int saorder_state_valid[] = {
156 1.1 jonathan SADB_SASTATE_DYING, SADB_SASTATE_MATURE,
157 1.1 jonathan /*
158 1.1 jonathan * This order is important because we must select the oldest SA
159 1.1 jonathan * for outbound processing. For inbound, This is not important.
160 1.1 jonathan */
161 1.1 jonathan };
162 1.1 jonathan static u_int saorder_state_alive[] = {
163 1.1 jonathan /* except DEAD */
164 1.1 jonathan SADB_SASTATE_MATURE, SADB_SASTATE_DYING, SADB_SASTATE_LARVAL
165 1.1 jonathan };
166 1.1 jonathan static u_int saorder_state_any[] = {
167 1.1 jonathan SADB_SASTATE_MATURE, SADB_SASTATE_DYING,
168 1.1 jonathan SADB_SASTATE_LARVAL, SADB_SASTATE_DEAD
169 1.1 jonathan };
170 1.1 jonathan
171 1.1 jonathan static const int minsize[] = {
172 1.1 jonathan sizeof(struct sadb_msg), /* SADB_EXT_RESERVED */
173 1.1 jonathan sizeof(struct sadb_sa), /* SADB_EXT_SA */
174 1.1 jonathan sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_CURRENT */
175 1.1 jonathan sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_HARD */
176 1.1 jonathan sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_SOFT */
177 1.1 jonathan sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_SRC */
178 1.1 jonathan sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_DST */
179 1.1 jonathan sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_PROXY */
180 1.1 jonathan sizeof(struct sadb_key), /* SADB_EXT_KEY_AUTH */
181 1.1 jonathan sizeof(struct sadb_key), /* SADB_EXT_KEY_ENCRYPT */
182 1.1 jonathan sizeof(struct sadb_ident), /* SADB_EXT_IDENTITY_SRC */
183 1.1 jonathan sizeof(struct sadb_ident), /* SADB_EXT_IDENTITY_DST */
184 1.1 jonathan sizeof(struct sadb_sens), /* SADB_EXT_SENSITIVITY */
185 1.1 jonathan sizeof(struct sadb_prop), /* SADB_EXT_PROPOSAL */
186 1.1 jonathan sizeof(struct sadb_supported), /* SADB_EXT_SUPPORTED_AUTH */
187 1.1 jonathan sizeof(struct sadb_supported), /* SADB_EXT_SUPPORTED_ENCRYPT */
188 1.1 jonathan sizeof(struct sadb_spirange), /* SADB_EXT_SPIRANGE */
189 1.1 jonathan 0, /* SADB_X_EXT_KMPRIVATE */
190 1.1 jonathan sizeof(struct sadb_x_policy), /* SADB_X_EXT_POLICY */
191 1.1 jonathan sizeof(struct sadb_x_sa2), /* SADB_X_SA2 */
192 1.21 manu sizeof(struct sadb_x_nat_t_type), /* SADB_X_EXT_NAT_T_TYPE */
193 1.21 manu sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_SPORT */
194 1.21 manu sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_DPORT */
195 1.23 jonathan sizeof(struct sadb_address), /* SADB_X_EXT_NAT_T_OA */
196 1.21 manu sizeof(struct sadb_x_nat_t_frag), /* SADB_X_EXT_NAT_T_FRAG */
197 1.1 jonathan };
198 1.1 jonathan static const int maxsize[] = {
199 1.1 jonathan sizeof(struct sadb_msg), /* SADB_EXT_RESERVED */
200 1.1 jonathan sizeof(struct sadb_sa), /* SADB_EXT_SA */
201 1.1 jonathan sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_CURRENT */
202 1.1 jonathan sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_HARD */
203 1.1 jonathan sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_SOFT */
204 1.1 jonathan 0, /* SADB_EXT_ADDRESS_SRC */
205 1.1 jonathan 0, /* SADB_EXT_ADDRESS_DST */
206 1.1 jonathan 0, /* SADB_EXT_ADDRESS_PROXY */
207 1.1 jonathan 0, /* SADB_EXT_KEY_AUTH */
208 1.1 jonathan 0, /* SADB_EXT_KEY_ENCRYPT */
209 1.1 jonathan 0, /* SADB_EXT_IDENTITY_SRC */
210 1.1 jonathan 0, /* SADB_EXT_IDENTITY_DST */
211 1.1 jonathan 0, /* SADB_EXT_SENSITIVITY */
212 1.1 jonathan 0, /* SADB_EXT_PROPOSAL */
213 1.1 jonathan 0, /* SADB_EXT_SUPPORTED_AUTH */
214 1.1 jonathan 0, /* SADB_EXT_SUPPORTED_ENCRYPT */
215 1.1 jonathan sizeof(struct sadb_spirange), /* SADB_EXT_SPIRANGE */
216 1.1 jonathan 0, /* SADB_X_EXT_KMPRIVATE */
217 1.1 jonathan 0, /* SADB_X_EXT_POLICY */
218 1.1 jonathan sizeof(struct sadb_x_sa2), /* SADB_X_SA2 */
219 1.21 manu sizeof(struct sadb_x_nat_t_type), /* SADB_X_EXT_NAT_T_TYPE */
220 1.21 manu sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_SPORT */
221 1.21 manu sizeof(struct sadb_x_nat_t_port), /* SADB_X_EXT_NAT_T_DPORT */
222 1.23 jonathan 0, /* SADB_X_EXT_NAT_T_OA */
223 1.21 manu sizeof(struct sadb_x_nat_t_frag), /* SADB_X_EXT_NAT_T_FRAG */
224 1.1 jonathan };
225 1.1 jonathan
226 1.1 jonathan static int ipsec_esp_keymin = 256;
227 1.1 jonathan static int ipsec_esp_auth = 0;
228 1.1 jonathan static int ipsec_ah_keymin = 128;
229 1.1 jonathan
230 1.1 jonathan #ifdef SYSCTL_DECL
231 1.1 jonathan SYSCTL_DECL(_net_key);
232 1.1 jonathan #endif
233 1.1 jonathan
234 1.1 jonathan #ifdef SYSCTL_INT
235 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_DEBUG_LEVEL, debug, CTLFLAG_RW, \
236 1.1 jonathan &key_debug_level, 0, "");
237 1.1 jonathan
238 1.1 jonathan /* max count of trial for the decision of spi value */
239 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_SPI_TRY, spi_trycnt, CTLFLAG_RW, \
240 1.1 jonathan &key_spi_trycnt, 0, "");
241 1.1 jonathan
242 1.1 jonathan /* minimum spi value to allocate automatically. */
243 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_SPI_MIN_VALUE, spi_minval, CTLFLAG_RW, \
244 1.1 jonathan &key_spi_minval, 0, "");
245 1.1 jonathan
246 1.1 jonathan /* maximun spi value to allocate automatically. */
247 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_SPI_MAX_VALUE, spi_maxval, CTLFLAG_RW, \
248 1.1 jonathan &key_spi_maxval, 0, "");
249 1.1 jonathan
250 1.1 jonathan /* interval to initialize randseed */
251 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_RANDOM_INT, int_random, CTLFLAG_RW, \
252 1.1 jonathan &key_int_random, 0, "");
253 1.1 jonathan
254 1.1 jonathan /* lifetime for larval SA */
255 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_LARVAL_LIFETIME, larval_lifetime, CTLFLAG_RW, \
256 1.1 jonathan &key_larval_lifetime, 0, "");
257 1.1 jonathan
258 1.1 jonathan /* counter for blocking to send SADB_ACQUIRE to IKEd */
259 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_BLOCKACQ_COUNT, blockacq_count, CTLFLAG_RW, \
260 1.1 jonathan &key_blockacq_count, 0, "");
261 1.1 jonathan
262 1.1 jonathan /* lifetime for blocking to send SADB_ACQUIRE to IKEd */
263 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_BLOCKACQ_LIFETIME, blockacq_lifetime, CTLFLAG_RW, \
264 1.1 jonathan &key_blockacq_lifetime, 0, "");
265 1.1 jonathan
266 1.1 jonathan /* ESP auth */
267 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_ESP_AUTH, esp_auth, CTLFLAG_RW, \
268 1.1 jonathan &ipsec_esp_auth, 0, "");
269 1.1 jonathan
270 1.1 jonathan /* minimum ESP key length */
271 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_ESP_KEYMIN, esp_keymin, CTLFLAG_RW, \
272 1.1 jonathan &ipsec_esp_keymin, 0, "");
273 1.1 jonathan
274 1.1 jonathan /* minimum AH key length */
275 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_AH_KEYMIN, ah_keymin, CTLFLAG_RW, \
276 1.1 jonathan &ipsec_ah_keymin, 0, "");
277 1.1 jonathan
278 1.1 jonathan /* perfered old SA rather than new SA */
279 1.1 jonathan SYSCTL_INT(_net_key, KEYCTL_PREFERED_OLDSA, prefered_oldsa, CTLFLAG_RW,\
280 1.1 jonathan &key_prefered_oldsa, 0, "");
281 1.3 tls #endif /* SYSCTL_INT */
282 1.1 jonathan
283 1.1 jonathan #ifndef LIST_FOREACH
284 1.1 jonathan #define LIST_FOREACH(elm, head, field) \
285 1.1 jonathan for (elm = LIST_FIRST(head); elm; elm = LIST_NEXT(elm, field))
286 1.1 jonathan #endif
287 1.1 jonathan #define __LIST_CHAINED(elm) \
288 1.1 jonathan (!((elm)->chain.le_next == NULL && (elm)->chain.le_prev == NULL))
289 1.1 jonathan #define LIST_INSERT_TAIL(head, elm, type, field) \
290 1.1 jonathan do {\
291 1.1 jonathan struct type *curelm = LIST_FIRST(head); \
292 1.1 jonathan if (curelm == NULL) {\
293 1.1 jonathan LIST_INSERT_HEAD(head, elm, field); \
294 1.1 jonathan } else { \
295 1.1 jonathan while (LIST_NEXT(curelm, field)) \
296 1.1 jonathan curelm = LIST_NEXT(curelm, field);\
297 1.1 jonathan LIST_INSERT_AFTER(curelm, elm, field);\
298 1.1 jonathan }\
299 1.1 jonathan } while (0)
300 1.1 jonathan
301 1.1 jonathan #define KEY_CHKSASTATE(head, sav, name) \
302 1.1 jonathan do { \
303 1.1 jonathan if ((head) != (sav)) { \
304 1.1 jonathan ipseclog((LOG_DEBUG, "%s: state mismatched (TREE=%d SA=%d)\n", \
305 1.1 jonathan (name), (head), (sav))); \
306 1.1 jonathan continue; \
307 1.1 jonathan } \
308 1.1 jonathan } while (0)
309 1.1 jonathan
310 1.1 jonathan #define KEY_CHKSPDIR(head, sp, name) \
311 1.1 jonathan do { \
312 1.1 jonathan if ((head) != (sp)) { \
313 1.1 jonathan ipseclog((LOG_DEBUG, "%s: direction mismatched (TREE=%d SP=%d), " \
314 1.1 jonathan "anyway continue.\n", \
315 1.1 jonathan (name), (head), (sp))); \
316 1.1 jonathan } \
317 1.1 jonathan } while (0)
318 1.1 jonathan
319 1.1 jonathan MALLOC_DEFINE(M_SECA, "key mgmt", "security associations, key management");
320 1.1 jonathan
321 1.1 jonathan #if 1
322 1.1 jonathan #define KMALLOC(p, t, n) \
323 1.1 jonathan ((p) = (t) malloc((unsigned long)(n), M_SECA, M_NOWAIT))
324 1.1 jonathan #define KFREE(p) \
325 1.40 degroote free((p), M_SECA)
326 1.1 jonathan #else
327 1.1 jonathan #define KMALLOC(p, t, n) \
328 1.1 jonathan do { \
329 1.1 jonathan ((p) = (t)malloc((unsigned long)(n), M_SECA, M_NOWAIT)); \
330 1.1 jonathan printf("%s %d: %p <- KMALLOC(%s, %d)\n", \
331 1.1 jonathan __FILE__, __LINE__, (p), #t, n); \
332 1.1 jonathan } while (0)
333 1.1 jonathan
334 1.1 jonathan #define KFREE(p) \
335 1.1 jonathan do { \
336 1.1 jonathan printf("%s %d: %p -> KFREE()\n", __FILE__, __LINE__, (p)); \
337 1.40 degroote free((p), M_SECA); \
338 1.1 jonathan } while (0)
339 1.1 jonathan #endif
340 1.1 jonathan
341 1.1 jonathan /*
342 1.1 jonathan * set parameters into secpolicyindex buffer.
343 1.1 jonathan * Must allocate secpolicyindex buffer passed to this function.
344 1.1 jonathan */
345 1.1 jonathan #define KEY_SETSECSPIDX(_dir, s, d, ps, pd, ulp, idx) \
346 1.1 jonathan do { \
347 1.49 degroote memset((idx), 0, sizeof(struct secpolicyindex)); \
348 1.1 jonathan (idx)->dir = (_dir); \
349 1.1 jonathan (idx)->prefs = (ps); \
350 1.1 jonathan (idx)->prefd = (pd); \
351 1.1 jonathan (idx)->ul_proto = (ulp); \
352 1.49 degroote memcpy(&(idx)->src, (s), ((const struct sockaddr *)(s))->sa_len); \
353 1.49 degroote memcpy(&(idx)->dst, (d), ((const struct sockaddr *)(d))->sa_len); \
354 1.1 jonathan } while (0)
355 1.1 jonathan
356 1.1 jonathan /*
357 1.1 jonathan * set parameters into secasindex buffer.
358 1.1 jonathan * Must allocate secasindex buffer before calling this function.
359 1.1 jonathan */
360 1.48 degroote static int
361 1.49 degroote key_setsecasidx (int, int, int, const struct sadb_address *,
362 1.49 degroote const struct sadb_address *, struct secasindex *);
363 1.48 degroote
364 1.1 jonathan /* key statistics */
365 1.1 jonathan struct _keystat {
366 1.1 jonathan u_long getspi_count; /* the avarage of count to try to get new SPI */
367 1.1 jonathan } keystat;
368 1.1 jonathan
369 1.1 jonathan struct sadb_msghdr {
370 1.1 jonathan struct sadb_msg *msg;
371 1.1 jonathan struct sadb_ext *ext[SADB_EXT_MAX + 1];
372 1.1 jonathan int extoff[SADB_EXT_MAX + 1];
373 1.1 jonathan int extlen[SADB_EXT_MAX + 1];
374 1.1 jonathan };
375 1.1 jonathan
376 1.49 degroote static struct secasvar *key_allocsa_policy (const struct secasindex *);
377 1.49 degroote static void key_freesp_so (struct secpolicy **);
378 1.49 degroote static struct secasvar *key_do_allocsa_policy (struct secashead *, u_int);
379 1.49 degroote static void key_delsp (struct secpolicy *);
380 1.49 degroote static struct secpolicy *key_getsp (struct secpolicyindex *);
381 1.49 degroote static struct secpolicy *key_getspbyid (u_int32_t);
382 1.49 degroote static u_int16_t key_newreqid (void);
383 1.49 degroote static struct mbuf *key_gather_mbuf (struct mbuf *,
384 1.49 degroote const struct sadb_msghdr *, int, int, ...);
385 1.49 degroote static int key_spdadd (struct socket *, struct mbuf *,
386 1.49 degroote const struct sadb_msghdr *);
387 1.49 degroote static u_int32_t key_getnewspid (void);
388 1.49 degroote static int key_spddelete (struct socket *, struct mbuf *,
389 1.49 degroote const struct sadb_msghdr *);
390 1.49 degroote static int key_spddelete2 (struct socket *, struct mbuf *,
391 1.49 degroote const struct sadb_msghdr *);
392 1.49 degroote static int key_spdget (struct socket *, struct mbuf *,
393 1.49 degroote const struct sadb_msghdr *);
394 1.49 degroote static int key_spdflush (struct socket *, struct mbuf *,
395 1.49 degroote const struct sadb_msghdr *);
396 1.49 degroote static int key_spddump (struct socket *, struct mbuf *,
397 1.49 degroote const struct sadb_msghdr *);
398 1.49 degroote static struct mbuf * key_setspddump (int *errorp, pid_t);
399 1.49 degroote static struct mbuf * key_setspddump_chain (int *errorp, int *lenp, pid_t pid);
400 1.48 degroote #ifdef IPSEC_NAT_T
401 1.49 degroote static int key_nat_map (struct socket *, struct mbuf *,
402 1.49 degroote const struct sadb_msghdr *);
403 1.48 degroote #endif
404 1.49 degroote static struct mbuf *key_setdumpsp (struct secpolicy *,
405 1.49 degroote u_int8_t, u_int32_t, pid_t);
406 1.49 degroote static u_int key_getspreqmsglen (struct secpolicy *);
407 1.49 degroote static int key_spdexpire (struct secpolicy *);
408 1.49 degroote static struct secashead *key_newsah (struct secasindex *);
409 1.49 degroote static void key_delsah (struct secashead *);
410 1.49 degroote static struct secasvar *key_newsav (struct mbuf *,
411 1.1 jonathan const struct sadb_msghdr *, struct secashead *, int *,
412 1.49 degroote const char*, int);
413 1.1 jonathan #define KEY_NEWSAV(m, sadb, sah, e) \
414 1.1 jonathan key_newsav(m, sadb, sah, e, __FILE__, __LINE__)
415 1.49 degroote static void key_delsav (struct secasvar *);
416 1.49 degroote static struct secashead *key_getsah (struct secasindex *);
417 1.49 degroote static struct secasvar *key_checkspidup (struct secasindex *, u_int32_t);
418 1.49 degroote static struct secasvar *key_getsavbyspi (struct secashead *, u_int32_t);
419 1.49 degroote static int key_setsaval (struct secasvar *, struct mbuf *,
420 1.49 degroote const struct sadb_msghdr *);
421 1.49 degroote static int key_mature (struct secasvar *);
422 1.49 degroote static struct mbuf *key_setdumpsa (struct secasvar *, u_int8_t,
423 1.49 degroote u_int8_t, u_int32_t, u_int32_t);
424 1.48 degroote #ifdef IPSEC_NAT_T
425 1.49 degroote static struct mbuf *key_setsadbxport (u_int16_t, u_int16_t);
426 1.49 degroote static struct mbuf *key_setsadbxtype (u_int16_t);
427 1.48 degroote #endif
428 1.49 degroote static void key_porttosaddr (union sockaddr_union *, u_int16_t);
429 1.49 degroote static int key_checksalen (const union sockaddr_union *);
430 1.49 degroote static struct mbuf *key_setsadbmsg (u_int8_t, u_int16_t, u_int8_t,
431 1.49 degroote u_int32_t, pid_t, u_int16_t);
432 1.49 degroote static struct mbuf *key_setsadbsa (struct secasvar *);
433 1.49 degroote static struct mbuf *key_setsadbaddr (u_int16_t,
434 1.49 degroote const struct sockaddr *, u_int8_t, u_int16_t);
435 1.1 jonathan #if 0
436 1.49 degroote static struct mbuf *key_setsadbident (u_int16_t, u_int16_t, void *,
437 1.49 degroote int, u_int64_t);
438 1.1 jonathan #endif
439 1.49 degroote static struct mbuf *key_setsadbxsa2 (u_int8_t, u_int32_t, u_int16_t);
440 1.49 degroote static struct mbuf *key_setsadbxpolicy (u_int16_t, u_int8_t,
441 1.49 degroote u_int32_t);
442 1.49 degroote static void *key_newbuf (const void *, u_int);
443 1.1 jonathan #ifdef INET6
444 1.49 degroote static int key_ismyaddr6 (struct sockaddr_in6 *);
445 1.1 jonathan #endif
446 1.1 jonathan
447 1.1 jonathan /* flags for key_cmpsaidx() */
448 1.1 jonathan #define CMP_HEAD 1 /* protocol, addresses. */
449 1.1 jonathan #define CMP_MODE_REQID 2 /* additionally HEAD, reqid, mode. */
450 1.1 jonathan #define CMP_REQID 3 /* additionally HEAD, reaid. */
451 1.1 jonathan #define CMP_EXACTLY 4 /* all elements. */
452 1.1 jonathan static int key_cmpsaidx
453 1.49 degroote (const struct secasindex *, const struct secasindex *, int);
454 1.1 jonathan
455 1.49 degroote static int key_sockaddrcmp (const struct sockaddr *, const struct sockaddr *, int);
456 1.49 degroote static int key_bbcmp (const void *, const void *, u_int);
457 1.49 degroote static void key_srandom (void);
458 1.49 degroote static u_int16_t key_satype2proto (u_int8_t);
459 1.49 degroote static u_int8_t key_proto2satype (u_int16_t);
460 1.49 degroote
461 1.49 degroote static int key_getspi (struct socket *, struct mbuf *,
462 1.49 degroote const struct sadb_msghdr *);
463 1.49 degroote static u_int32_t key_do_getnewspi (struct sadb_spirange *,
464 1.49 degroote struct secasindex *);
465 1.48 degroote #ifdef IPSEC_NAT_T
466 1.49 degroote static int key_handle_natt_info (struct secasvar *,
467 1.49 degroote const struct sadb_msghdr *);
468 1.48 degroote #endif
469 1.49 degroote static int key_update (struct socket *, struct mbuf *,
470 1.49 degroote const struct sadb_msghdr *);
471 1.1 jonathan #ifdef IPSEC_DOSEQCHECK
472 1.49 degroote static struct secasvar *key_getsavbyseq (struct secashead *, u_int32_t);
473 1.1 jonathan #endif
474 1.49 degroote static int key_add (struct socket *, struct mbuf *,
475 1.49 degroote const struct sadb_msghdr *);
476 1.49 degroote static int key_setident (struct secashead *, struct mbuf *,
477 1.49 degroote const struct sadb_msghdr *);
478 1.49 degroote static struct mbuf *key_getmsgbuf_x1 (struct mbuf *,
479 1.49 degroote const struct sadb_msghdr *);
480 1.49 degroote static int key_delete (struct socket *, struct mbuf *,
481 1.49 degroote const struct sadb_msghdr *);
482 1.49 degroote static int key_get (struct socket *, struct mbuf *,
483 1.49 degroote const struct sadb_msghdr *);
484 1.49 degroote
485 1.49 degroote static void key_getcomb_setlifetime (struct sadb_comb *);
486 1.49 degroote static struct mbuf *key_getcomb_esp (void);
487 1.49 degroote static struct mbuf *key_getcomb_ah (void);
488 1.49 degroote static struct mbuf *key_getcomb_ipcomp (void);
489 1.49 degroote static struct mbuf *key_getprop (const struct secasindex *);
490 1.1 jonathan
491 1.49 degroote static int key_acquire (const struct secasindex *, struct secpolicy *);
492 1.1 jonathan #ifndef IPSEC_NONBLOCK_ACQUIRE
493 1.49 degroote static struct secacq *key_newacq (const struct secasindex *);
494 1.49 degroote static struct secacq *key_getacq (const struct secasindex *);
495 1.49 degroote static struct secacq *key_getacqbyseq (u_int32_t);
496 1.49 degroote #endif
497 1.49 degroote static struct secspacq *key_newspacq (struct secpolicyindex *);
498 1.49 degroote static struct secspacq *key_getspacq (struct secpolicyindex *);
499 1.49 degroote static int key_acquire2 (struct socket *, struct mbuf *,
500 1.49 degroote const struct sadb_msghdr *);
501 1.49 degroote static int key_register (struct socket *, struct mbuf *,
502 1.49 degroote const struct sadb_msghdr *);
503 1.49 degroote static int key_expire (struct secasvar *);
504 1.49 degroote static int key_flush (struct socket *, struct mbuf *,
505 1.49 degroote const struct sadb_msghdr *);
506 1.49 degroote static struct mbuf *key_setdump_chain (u_int8_t req_satype, int *errorp,
507 1.49 degroote int *lenp, pid_t pid);
508 1.49 degroote static int key_dump (struct socket *, struct mbuf *,
509 1.49 degroote const struct sadb_msghdr *);
510 1.49 degroote static int key_promisc (struct socket *, struct mbuf *,
511 1.49 degroote const struct sadb_msghdr *);
512 1.49 degroote static int key_senderror (struct socket *, struct mbuf *, int);
513 1.49 degroote static int key_validate_ext (const struct sadb_ext *, int);
514 1.49 degroote static int key_align (struct mbuf *, struct sadb_msghdr *);
515 1.1 jonathan #if 0
516 1.49 degroote static const char *key_getfqdn (void);
517 1.49 degroote static const char *key_getuserfqdn (void);
518 1.1 jonathan #endif
519 1.49 degroote static void key_sa_chgstate (struct secasvar *, u_int8_t);
520 1.49 degroote static inline void key_sp_dead (struct secpolicy *);
521 1.49 degroote static void key_sp_unlink (struct secpolicy *sp);
522 1.18 jonathan
523 1.49 degroote static struct mbuf *key_alloc_mbuf (int);
524 1.1 jonathan struct callout key_timehandler_ch;
525 1.1 jonathan
526 1.1 jonathan #define SA_ADDREF(p) do { \
527 1.1 jonathan (p)->refcnt++; \
528 1.1 jonathan IPSEC_ASSERT((p)->refcnt != 0, \
529 1.1 jonathan ("SA refcnt overflow at %s:%u", __FILE__, __LINE__)); \
530 1.1 jonathan } while (0)
531 1.1 jonathan #define SA_DELREF(p) do { \
532 1.1 jonathan IPSEC_ASSERT((p)->refcnt > 0, \
533 1.1 jonathan ("SA refcnt underflow at %s:%u", __FILE__, __LINE__)); \
534 1.1 jonathan (p)->refcnt--; \
535 1.1 jonathan } while (0)
536 1.1 jonathan
537 1.1 jonathan #define SP_ADDREF(p) do { \
538 1.1 jonathan (p)->refcnt++; \
539 1.1 jonathan IPSEC_ASSERT((p)->refcnt != 0, \
540 1.1 jonathan ("SP refcnt overflow at %s:%u", __FILE__, __LINE__)); \
541 1.1 jonathan } while (0)
542 1.1 jonathan #define SP_DELREF(p) do { \
543 1.1 jonathan IPSEC_ASSERT((p)->refcnt > 0, \
544 1.1 jonathan ("SP refcnt underflow at %s:%u", __FILE__, __LINE__)); \
545 1.1 jonathan (p)->refcnt--; \
546 1.1 jonathan } while (0)
547 1.1 jonathan
548 1.18 jonathan
549 1.27 perry static inline void
550 1.18 jonathan key_sp_dead(struct secpolicy *sp)
551 1.18 jonathan {
552 1.18 jonathan
553 1.18 jonathan /* mark the SP dead */
554 1.18 jonathan sp->state = IPSEC_SPSTATE_DEAD;
555 1.18 jonathan }
556 1.18 jonathan
557 1.18 jonathan static void
558 1.18 jonathan key_sp_unlink(struct secpolicy *sp)
559 1.18 jonathan {
560 1.18 jonathan
561 1.18 jonathan /* remove from SP index */
562 1.18 jonathan if (__LIST_CHAINED(sp)) {
563 1.18 jonathan LIST_REMOVE(sp, chain);
564 1.18 jonathan /* Release refcount held just for being on chain */
565 1.18 jonathan KEY_FREESP(&sp);
566 1.18 jonathan }
567 1.18 jonathan }
568 1.18 jonathan
569 1.18 jonathan
570 1.1 jonathan /*
571 1.1 jonathan * Return 0 when there are known to be no SP's for the specified
572 1.1 jonathan * direction. Otherwise return 1. This is used by IPsec code
573 1.1 jonathan * to optimize performance.
574 1.1 jonathan */
575 1.1 jonathan int
576 1.1 jonathan key_havesp(u_int dir)
577 1.1 jonathan {
578 1.1 jonathan return (dir == IPSEC_DIR_INBOUND || dir == IPSEC_DIR_OUTBOUND ?
579 1.1 jonathan LIST_FIRST(&sptree[dir]) != NULL : 1);
580 1.1 jonathan }
581 1.1 jonathan
582 1.1 jonathan /* %%% IPsec policy management */
583 1.1 jonathan /*
584 1.1 jonathan * allocating a SP for OUTBOUND or INBOUND packet.
585 1.1 jonathan * Must call key_freesp() later.
586 1.1 jonathan * OUT: NULL: not found
587 1.1 jonathan * others: found and return the pointer.
588 1.1 jonathan */
589 1.1 jonathan struct secpolicy *
590 1.1 jonathan key_allocsp(struct secpolicyindex *spidx, u_int dir, const char* where, int tag)
591 1.1 jonathan {
592 1.1 jonathan struct secpolicy *sp;
593 1.1 jonathan int s;
594 1.1 jonathan
595 1.1 jonathan IPSEC_ASSERT(spidx != NULL, ("key_allocsp: null spidx"));
596 1.1 jonathan IPSEC_ASSERT(dir == IPSEC_DIR_INBOUND || dir == IPSEC_DIR_OUTBOUND,
597 1.1 jonathan ("key_allocsp: invalid direction %u", dir));
598 1.1 jonathan
599 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
600 1.1 jonathan printf("DP key_allocsp from %s:%u\n", where, tag));
601 1.1 jonathan
602 1.1 jonathan /* get a SP entry */
603 1.1 jonathan s = splsoftnet(); /*called from softclock()*/
604 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_DATA,
605 1.1 jonathan printf("*** objects\n");
606 1.1 jonathan kdebug_secpolicyindex(spidx));
607 1.1 jonathan
608 1.1 jonathan LIST_FOREACH(sp, &sptree[dir], chain) {
609 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_DATA,
610 1.1 jonathan printf("*** in SPD\n");
611 1.1 jonathan kdebug_secpolicyindex(&sp->spidx));
612 1.1 jonathan
613 1.1 jonathan if (sp->state == IPSEC_SPSTATE_DEAD)
614 1.1 jonathan continue;
615 1.1 jonathan if (key_cmpspidx_withmask(&sp->spidx, spidx))
616 1.1 jonathan goto found;
617 1.1 jonathan }
618 1.1 jonathan sp = NULL;
619 1.1 jonathan found:
620 1.1 jonathan if (sp) {
621 1.1 jonathan /* sanity check */
622 1.1 jonathan KEY_CHKSPDIR(sp->spidx.dir, dir, "key_allocsp");
623 1.1 jonathan
624 1.1 jonathan /* found a SPD entry */
625 1.1 jonathan sp->lastused = time_second;
626 1.1 jonathan SP_ADDREF(sp);
627 1.1 jonathan }
628 1.1 jonathan splx(s);
629 1.1 jonathan
630 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
631 1.1 jonathan printf("DP key_allocsp return SP:%p (ID=%u) refcnt %u\n",
632 1.1 jonathan sp, sp ? sp->id : 0, sp ? sp->refcnt : 0));
633 1.1 jonathan return sp;
634 1.1 jonathan }
635 1.1 jonathan
636 1.1 jonathan /*
637 1.1 jonathan * allocating a SP for OUTBOUND or INBOUND packet.
638 1.1 jonathan * Must call key_freesp() later.
639 1.1 jonathan * OUT: NULL: not found
640 1.1 jonathan * others: found and return the pointer.
641 1.1 jonathan */
642 1.1 jonathan struct secpolicy *
643 1.1 jonathan key_allocsp2(u_int32_t spi,
644 1.1 jonathan union sockaddr_union *dst,
645 1.1 jonathan u_int8_t proto,
646 1.1 jonathan u_int dir,
647 1.1 jonathan const char* where, int tag)
648 1.1 jonathan {
649 1.1 jonathan struct secpolicy *sp;
650 1.1 jonathan int s;
651 1.1 jonathan
652 1.1 jonathan IPSEC_ASSERT(dst != NULL, ("key_allocsp2: null dst"));
653 1.1 jonathan IPSEC_ASSERT(dir == IPSEC_DIR_INBOUND || dir == IPSEC_DIR_OUTBOUND,
654 1.1 jonathan ("key_allocsp2: invalid direction %u", dir));
655 1.1 jonathan
656 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
657 1.1 jonathan printf("DP key_allocsp2 from %s:%u\n", where, tag));
658 1.1 jonathan
659 1.1 jonathan /* get a SP entry */
660 1.1 jonathan s = splsoftnet(); /*called from softclock()*/
661 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_DATA,
662 1.1 jonathan printf("*** objects\n");
663 1.1 jonathan printf("spi %u proto %u dir %u\n", spi, proto, dir);
664 1.1 jonathan kdebug_sockaddr(&dst->sa));
665 1.1 jonathan
666 1.1 jonathan LIST_FOREACH(sp, &sptree[dir], chain) {
667 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_DATA,
668 1.1 jonathan printf("*** in SPD\n");
669 1.1 jonathan kdebug_secpolicyindex(&sp->spidx));
670 1.1 jonathan
671 1.1 jonathan if (sp->state == IPSEC_SPSTATE_DEAD)
672 1.1 jonathan continue;
673 1.1 jonathan /* compare simple values, then dst address */
674 1.1 jonathan if (sp->spidx.ul_proto != proto)
675 1.1 jonathan continue;
676 1.1 jonathan /* NB: spi's must exist and match */
677 1.1 jonathan if (!sp->req || !sp->req->sav || sp->req->sav->spi != spi)
678 1.1 jonathan continue;
679 1.1 jonathan if (key_sockaddrcmp(&sp->spidx.dst.sa, &dst->sa, 1) == 0)
680 1.1 jonathan goto found;
681 1.1 jonathan }
682 1.1 jonathan sp = NULL;
683 1.1 jonathan found:
684 1.1 jonathan if (sp) {
685 1.1 jonathan /* sanity check */
686 1.1 jonathan KEY_CHKSPDIR(sp->spidx.dir, dir, "key_allocsp2");
687 1.1 jonathan
688 1.1 jonathan /* found a SPD entry */
689 1.1 jonathan sp->lastused = time_second;
690 1.1 jonathan SP_ADDREF(sp);
691 1.1 jonathan }
692 1.1 jonathan splx(s);
693 1.1 jonathan
694 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
695 1.1 jonathan printf("DP key_allocsp2 return SP:%p (ID=%u) refcnt %u\n",
696 1.1 jonathan sp, sp ? sp->id : 0, sp ? sp->refcnt : 0));
697 1.1 jonathan return sp;
698 1.1 jonathan }
699 1.1 jonathan
700 1.1 jonathan /*
701 1.1 jonathan * return a policy that matches this particular inbound packet.
702 1.1 jonathan * XXX slow
703 1.1 jonathan */
704 1.1 jonathan struct secpolicy *
705 1.1 jonathan key_gettunnel(const struct sockaddr *osrc,
706 1.1 jonathan const struct sockaddr *odst,
707 1.1 jonathan const struct sockaddr *isrc,
708 1.1 jonathan const struct sockaddr *idst,
709 1.1 jonathan const char* where, int tag)
710 1.1 jonathan {
711 1.1 jonathan struct secpolicy *sp;
712 1.1 jonathan const int dir = IPSEC_DIR_INBOUND;
713 1.1 jonathan int s;
714 1.1 jonathan struct ipsecrequest *r1, *r2, *p;
715 1.1 jonathan struct secpolicyindex spidx;
716 1.1 jonathan
717 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
718 1.1 jonathan printf("DP key_gettunnel from %s:%u\n", where, tag));
719 1.1 jonathan
720 1.1 jonathan if (isrc->sa_family != idst->sa_family) {
721 1.1 jonathan ipseclog((LOG_ERR, "protocol family mismatched %d != %d\n.",
722 1.1 jonathan isrc->sa_family, idst->sa_family));
723 1.1 jonathan sp = NULL;
724 1.1 jonathan goto done;
725 1.1 jonathan }
726 1.1 jonathan
727 1.1 jonathan s = splsoftnet(); /*called from softclock()*/
728 1.1 jonathan LIST_FOREACH(sp, &sptree[dir], chain) {
729 1.1 jonathan if (sp->state == IPSEC_SPSTATE_DEAD)
730 1.1 jonathan continue;
731 1.1 jonathan
732 1.1 jonathan r1 = r2 = NULL;
733 1.1 jonathan for (p = sp->req; p; p = p->next) {
734 1.1 jonathan if (p->saidx.mode != IPSEC_MODE_TUNNEL)
735 1.1 jonathan continue;
736 1.1 jonathan
737 1.1 jonathan r1 = r2;
738 1.1 jonathan r2 = p;
739 1.1 jonathan
740 1.1 jonathan if (!r1) {
741 1.1 jonathan /* here we look at address matches only */
742 1.1 jonathan spidx = sp->spidx;
743 1.1 jonathan if (isrc->sa_len > sizeof(spidx.src) ||
744 1.1 jonathan idst->sa_len > sizeof(spidx.dst))
745 1.1 jonathan continue;
746 1.49 degroote memcpy(&spidx.src, isrc, isrc->sa_len);
747 1.49 degroote memcpy(&spidx.dst, idst, idst->sa_len);
748 1.1 jonathan if (!key_cmpspidx_withmask(&sp->spidx, &spidx))
749 1.1 jonathan continue;
750 1.1 jonathan } else {
751 1.1 jonathan if (key_sockaddrcmp(&r1->saidx.src.sa, isrc, 0) ||
752 1.1 jonathan key_sockaddrcmp(&r1->saidx.dst.sa, idst, 0))
753 1.1 jonathan continue;
754 1.1 jonathan }
755 1.1 jonathan
756 1.1 jonathan if (key_sockaddrcmp(&r2->saidx.src.sa, osrc, 0) ||
757 1.1 jonathan key_sockaddrcmp(&r2->saidx.dst.sa, odst, 0))
758 1.1 jonathan continue;
759 1.1 jonathan
760 1.1 jonathan goto found;
761 1.1 jonathan }
762 1.1 jonathan }
763 1.1 jonathan sp = NULL;
764 1.1 jonathan found:
765 1.1 jonathan if (sp) {
766 1.1 jonathan sp->lastused = time_second;
767 1.1 jonathan SP_ADDREF(sp);
768 1.1 jonathan }
769 1.1 jonathan splx(s);
770 1.1 jonathan done:
771 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
772 1.1 jonathan printf("DP key_gettunnel return SP:%p (ID=%u) refcnt %u\n",
773 1.1 jonathan sp, sp ? sp->id : 0, sp ? sp->refcnt : 0));
774 1.1 jonathan return sp;
775 1.1 jonathan }
776 1.1 jonathan
777 1.1 jonathan /*
778 1.1 jonathan * allocating an SA entry for an *OUTBOUND* packet.
779 1.1 jonathan * checking each request entries in SP, and acquire an SA if need.
780 1.1 jonathan * OUT: 0: there are valid requests.
781 1.1 jonathan * ENOENT: policy may be valid, but SA with REQUIRE is on acquiring.
782 1.1 jonathan */
783 1.1 jonathan int
784 1.1 jonathan key_checkrequest(struct ipsecrequest *isr, const struct secasindex *saidx)
785 1.1 jonathan {
786 1.1 jonathan u_int level;
787 1.1 jonathan int error;
788 1.1 jonathan
789 1.1 jonathan IPSEC_ASSERT(isr != NULL, ("key_checkrequest: null isr"));
790 1.1 jonathan IPSEC_ASSERT(saidx != NULL, ("key_checkrequest: null saidx"));
791 1.1 jonathan IPSEC_ASSERT(saidx->mode == IPSEC_MODE_TRANSPORT ||
792 1.1 jonathan saidx->mode == IPSEC_MODE_TUNNEL,
793 1.1 jonathan ("key_checkrequest: unexpected policy %u", saidx->mode));
794 1.1 jonathan
795 1.1 jonathan /* get current level */
796 1.1 jonathan level = ipsec_get_reqlevel(isr);
797 1.1 jonathan
798 1.1 jonathan /*
799 1.1 jonathan * XXX guard against protocol callbacks from the crypto
800 1.1 jonathan * thread as they reference ipsecrequest.sav which we
801 1.1 jonathan * temporarily null out below. Need to rethink how we
802 1.1 jonathan * handle bundled SA's in the callback thread.
803 1.1 jonathan */
804 1.1 jonathan IPSEC_SPLASSERT_SOFTNET("key_checkrequest");
805 1.1 jonathan #if 0
806 1.1 jonathan /*
807 1.1 jonathan * We do allocate new SA only if the state of SA in the holder is
808 1.1 jonathan * SADB_SASTATE_DEAD. The SA for outbound must be the oldest.
809 1.1 jonathan */
810 1.1 jonathan if (isr->sav != NULL) {
811 1.1 jonathan if (isr->sav->sah == NULL)
812 1.24 christos panic("key_checkrequest: sah is null");
813 1.1 jonathan if (isr->sav == (struct secasvar *)LIST_FIRST(
814 1.1 jonathan &isr->sav->sah->savtree[SADB_SASTATE_DEAD])) {
815 1.1 jonathan KEY_FREESAV(&isr->sav);
816 1.1 jonathan isr->sav = NULL;
817 1.1 jonathan }
818 1.1 jonathan }
819 1.1 jonathan #else
820 1.1 jonathan /*
821 1.1 jonathan * we free any SA stashed in the IPsec request because a different
822 1.1 jonathan * SA may be involved each time this request is checked, either
823 1.1 jonathan * because new SAs are being configured, or this request is
824 1.1 jonathan * associated with an unconnected datagram socket, or this request
825 1.1 jonathan * is associated with a system default policy.
826 1.1 jonathan *
827 1.1 jonathan * The operation may have negative impact to performance. We may
828 1.1 jonathan * want to check cached SA carefully, rather than picking new SA
829 1.1 jonathan * every time.
830 1.1 jonathan */
831 1.1 jonathan if (isr->sav != NULL) {
832 1.1 jonathan KEY_FREESAV(&isr->sav);
833 1.1 jonathan isr->sav = NULL;
834 1.1 jonathan }
835 1.1 jonathan #endif
836 1.1 jonathan
837 1.1 jonathan /*
838 1.1 jonathan * new SA allocation if no SA found.
839 1.1 jonathan * key_allocsa_policy should allocate the oldest SA available.
840 1.1 jonathan * See key_do_allocsa_policy(), and draft-jenkins-ipsec-rekeying-03.txt.
841 1.1 jonathan */
842 1.1 jonathan if (isr->sav == NULL)
843 1.1 jonathan isr->sav = key_allocsa_policy(saidx);
844 1.1 jonathan
845 1.1 jonathan /* When there is SA. */
846 1.1 jonathan if (isr->sav != NULL) {
847 1.1 jonathan if (isr->sav->state != SADB_SASTATE_MATURE &&
848 1.1 jonathan isr->sav->state != SADB_SASTATE_DYING)
849 1.1 jonathan return EINVAL;
850 1.1 jonathan return 0;
851 1.1 jonathan }
852 1.1 jonathan
853 1.1 jonathan /* there is no SA */
854 1.1 jonathan error = key_acquire(saidx, isr->sp);
855 1.1 jonathan if (error != 0) {
856 1.1 jonathan /* XXX What should I do ? */
857 1.1 jonathan ipseclog((LOG_DEBUG, "key_checkrequest: error %d returned "
858 1.1 jonathan "from key_acquire.\n", error));
859 1.1 jonathan return error;
860 1.1 jonathan }
861 1.1 jonathan
862 1.1 jonathan if (level != IPSEC_LEVEL_REQUIRE) {
863 1.1 jonathan /* XXX sigh, the interface to this routine is botched */
864 1.1 jonathan IPSEC_ASSERT(isr->sav == NULL, ("key_checkrequest: unexpected SA"));
865 1.1 jonathan return 0;
866 1.1 jonathan } else {
867 1.1 jonathan return ENOENT;
868 1.1 jonathan }
869 1.1 jonathan }
870 1.1 jonathan
871 1.1 jonathan /*
872 1.1 jonathan * allocating a SA for policy entry from SAD.
873 1.1 jonathan * NOTE: searching SAD of aliving state.
874 1.1 jonathan * OUT: NULL: not found.
875 1.1 jonathan * others: found and return the pointer.
876 1.1 jonathan */
877 1.1 jonathan static struct secasvar *
878 1.1 jonathan key_allocsa_policy(const struct secasindex *saidx)
879 1.1 jonathan {
880 1.1 jonathan struct secashead *sah;
881 1.1 jonathan struct secasvar *sav;
882 1.1 jonathan u_int stateidx, state;
883 1.1 jonathan
884 1.1 jonathan LIST_FOREACH(sah, &sahtree, chain) {
885 1.1 jonathan if (sah->state == SADB_SASTATE_DEAD)
886 1.1 jonathan continue;
887 1.1 jonathan if (key_cmpsaidx(&sah->saidx, saidx, CMP_MODE_REQID))
888 1.1 jonathan goto found;
889 1.1 jonathan }
890 1.1 jonathan
891 1.1 jonathan return NULL;
892 1.1 jonathan
893 1.1 jonathan found:
894 1.1 jonathan
895 1.1 jonathan /* search valid state */
896 1.1 jonathan for (stateidx = 0;
897 1.1 jonathan stateidx < _ARRAYLEN(saorder_state_valid);
898 1.1 jonathan stateidx++) {
899 1.1 jonathan
900 1.1 jonathan state = saorder_state_valid[stateidx];
901 1.1 jonathan
902 1.1 jonathan sav = key_do_allocsa_policy(sah, state);
903 1.1 jonathan if (sav != NULL)
904 1.1 jonathan return sav;
905 1.1 jonathan }
906 1.1 jonathan
907 1.1 jonathan return NULL;
908 1.1 jonathan }
909 1.1 jonathan
910 1.1 jonathan /*
911 1.1 jonathan * searching SAD with direction, protocol, mode and state.
912 1.1 jonathan * called by key_allocsa_policy().
913 1.1 jonathan * OUT:
914 1.1 jonathan * NULL : not found
915 1.1 jonathan * others : found, pointer to a SA.
916 1.1 jonathan */
917 1.1 jonathan static struct secasvar *
918 1.1 jonathan key_do_allocsa_policy(struct secashead *sah, u_int state)
919 1.1 jonathan {
920 1.1 jonathan struct secasvar *sav, *nextsav, *candidate, *d;
921 1.1 jonathan
922 1.1 jonathan /* initilize */
923 1.1 jonathan candidate = NULL;
924 1.1 jonathan
925 1.1 jonathan for (sav = LIST_FIRST(&sah->savtree[state]);
926 1.1 jonathan sav != NULL;
927 1.1 jonathan sav = nextsav) {
928 1.1 jonathan
929 1.1 jonathan nextsav = LIST_NEXT(sav, chain);
930 1.1 jonathan
931 1.1 jonathan /* sanity check */
932 1.1 jonathan KEY_CHKSASTATE(sav->state, state, "key_do_allocsa_policy");
933 1.1 jonathan
934 1.1 jonathan /* initialize */
935 1.1 jonathan if (candidate == NULL) {
936 1.1 jonathan candidate = sav;
937 1.1 jonathan continue;
938 1.1 jonathan }
939 1.1 jonathan
940 1.1 jonathan /* Which SA is the better ? */
941 1.1 jonathan
942 1.1 jonathan /* sanity check 2 */
943 1.1 jonathan if (candidate->lft_c == NULL || sav->lft_c == NULL)
944 1.1 jonathan panic("key_do_allocsa_policy: "
945 1.24 christos "lifetime_current is NULL");
946 1.1 jonathan
947 1.1 jonathan /* What the best method is to compare ? */
948 1.1 jonathan if (key_prefered_oldsa) {
949 1.1 jonathan if (candidate->lft_c->sadb_lifetime_addtime >
950 1.1 jonathan sav->lft_c->sadb_lifetime_addtime) {
951 1.1 jonathan candidate = sav;
952 1.1 jonathan }
953 1.1 jonathan continue;
954 1.1 jonathan /*NOTREACHED*/
955 1.1 jonathan }
956 1.1 jonathan
957 1.1 jonathan /* prefered new sa rather than old sa */
958 1.1 jonathan if (candidate->lft_c->sadb_lifetime_addtime <
959 1.1 jonathan sav->lft_c->sadb_lifetime_addtime) {
960 1.1 jonathan d = candidate;
961 1.1 jonathan candidate = sav;
962 1.1 jonathan } else
963 1.1 jonathan d = sav;
964 1.1 jonathan
965 1.1 jonathan /*
966 1.1 jonathan * prepared to delete the SA when there is more
967 1.1 jonathan * suitable candidate and the lifetime of the SA is not
968 1.1 jonathan * permanent.
969 1.1 jonathan */
970 1.1 jonathan if (d->lft_c->sadb_lifetime_addtime != 0) {
971 1.1 jonathan struct mbuf *m, *result;
972 1.1 jonathan
973 1.1 jonathan key_sa_chgstate(d, SADB_SASTATE_DEAD);
974 1.1 jonathan
975 1.1 jonathan IPSEC_ASSERT(d->refcnt > 0,
976 1.1 jonathan ("key_do_allocsa_policy: bogus ref count"));
977 1.1 jonathan m = key_setsadbmsg(SADB_DELETE, 0,
978 1.1 jonathan d->sah->saidx.proto, 0, 0, d->refcnt - 1);
979 1.1 jonathan if (!m)
980 1.1 jonathan goto msgfail;
981 1.1 jonathan result = m;
982 1.1 jonathan
983 1.1 jonathan /* set sadb_address for saidx's. */
984 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
985 1.1 jonathan &d->sah->saidx.src.sa,
986 1.1 jonathan d->sah->saidx.src.sa.sa_len << 3,
987 1.1 jonathan IPSEC_ULPROTO_ANY);
988 1.1 jonathan if (!m)
989 1.1 jonathan goto msgfail;
990 1.1 jonathan m_cat(result, m);
991 1.1 jonathan
992 1.1 jonathan /* set sadb_address for saidx's. */
993 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
994 1.1 jonathan &d->sah->saidx.src.sa,
995 1.1 jonathan d->sah->saidx.src.sa.sa_len << 3,
996 1.1 jonathan IPSEC_ULPROTO_ANY);
997 1.1 jonathan if (!m)
998 1.1 jonathan goto msgfail;
999 1.1 jonathan m_cat(result, m);
1000 1.1 jonathan
1001 1.1 jonathan /* create SA extension */
1002 1.1 jonathan m = key_setsadbsa(d);
1003 1.1 jonathan if (!m)
1004 1.1 jonathan goto msgfail;
1005 1.1 jonathan m_cat(result, m);
1006 1.1 jonathan
1007 1.1 jonathan if (result->m_len < sizeof(struct sadb_msg)) {
1008 1.1 jonathan result = m_pullup(result,
1009 1.1 jonathan sizeof(struct sadb_msg));
1010 1.1 jonathan if (result == NULL)
1011 1.1 jonathan goto msgfail;
1012 1.1 jonathan }
1013 1.1 jonathan
1014 1.1 jonathan result->m_pkthdr.len = 0;
1015 1.1 jonathan for (m = result; m; m = m->m_next)
1016 1.1 jonathan result->m_pkthdr.len += m->m_len;
1017 1.1 jonathan mtod(result, struct sadb_msg *)->sadb_msg_len =
1018 1.1 jonathan PFKEY_UNIT64(result->m_pkthdr.len);
1019 1.1 jonathan
1020 1.1 jonathan if (key_sendup_mbuf(NULL, result,
1021 1.1 jonathan KEY_SENDUP_REGISTERED))
1022 1.1 jonathan goto msgfail;
1023 1.1 jonathan msgfail:
1024 1.1 jonathan KEY_FREESAV(&d);
1025 1.1 jonathan }
1026 1.1 jonathan }
1027 1.1 jonathan
1028 1.1 jonathan if (candidate) {
1029 1.1 jonathan SA_ADDREF(candidate);
1030 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1031 1.1 jonathan printf("DP allocsa_policy cause "
1032 1.1 jonathan "refcnt++:%d SA:%p\n",
1033 1.1 jonathan candidate->refcnt, candidate));
1034 1.1 jonathan }
1035 1.1 jonathan return candidate;
1036 1.1 jonathan }
1037 1.1 jonathan
1038 1.1 jonathan /*
1039 1.1 jonathan * allocating a usable SA entry for a *INBOUND* packet.
1040 1.1 jonathan * Must call key_freesav() later.
1041 1.1 jonathan * OUT: positive: pointer to a usable sav (i.e. MATURE or DYING state).
1042 1.7 wiz * NULL: not found, or error occurred.
1043 1.1 jonathan *
1044 1.1 jonathan * In the comparison, no source address is used--for RFC2401 conformance.
1045 1.1 jonathan * To quote, from section 4.1:
1046 1.1 jonathan * A security association is uniquely identified by a triple consisting
1047 1.1 jonathan * of a Security Parameter Index (SPI), an IP Destination Address, and a
1048 1.1 jonathan * security protocol (AH or ESP) identifier.
1049 1.1 jonathan * Note that, however, we do need to keep source address in IPsec SA.
1050 1.1 jonathan * IKE specification and PF_KEY specification do assume that we
1051 1.1 jonathan * keep source address in IPsec SA. We see a tricky situation here.
1052 1.48 degroote *
1053 1.48 degroote * sport and dport are used for NAT-T. network order is always used.
1054 1.1 jonathan */
1055 1.1 jonathan struct secasvar *
1056 1.1 jonathan key_allocsa(
1057 1.37 degroote const union sockaddr_union *dst,
1058 1.1 jonathan u_int proto,
1059 1.1 jonathan u_int32_t spi,
1060 1.48 degroote u_int16_t sport,
1061 1.48 degroote u_int16_t dport,
1062 1.1 jonathan const char* where, int tag)
1063 1.1 jonathan {
1064 1.1 jonathan struct secashead *sah;
1065 1.1 jonathan struct secasvar *sav;
1066 1.1 jonathan u_int stateidx, state;
1067 1.1 jonathan int s;
1068 1.48 degroote int chkport = 0;
1069 1.1 jonathan
1070 1.33 degroote int must_check_spi = 1;
1071 1.33 degroote int must_check_alg = 0;
1072 1.33 degroote u_int16_t cpi = 0;
1073 1.33 degroote u_int8_t algo = 0;
1074 1.33 degroote
1075 1.48 degroote #ifdef IPSEC_NAT_T
1076 1.48 degroote if ((sport != 0) && (dport != 0))
1077 1.48 degroote chkport = 1;
1078 1.48 degroote #endif
1079 1.48 degroote
1080 1.1 jonathan IPSEC_ASSERT(dst != NULL, ("key_allocsa: null dst address"));
1081 1.1 jonathan
1082 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1083 1.1 jonathan printf("DP key_allocsa from %s:%u\n", where, tag));
1084 1.1 jonathan
1085 1.1 jonathan /*
1086 1.33 degroote * XXX IPCOMP case
1087 1.33 degroote * We use cpi to define spi here. In the case where cpi <=
1088 1.33 degroote * IPCOMP_CPI_NEGOTIATE_MIN, cpi just define the algorithm used, not
1089 1.33 degroote * the real spi. In this case, don't check the spi but check the
1090 1.33 degroote * algorithm
1091 1.33 degroote */
1092 1.33 degroote
1093 1.33 degroote if (proto == IPPROTO_IPCOMP) {
1094 1.33 degroote u_int32_t tmp;
1095 1.33 degroote tmp = ntohl(spi);
1096 1.33 degroote cpi = (u_int16_t) tmp;
1097 1.33 degroote if (cpi < IPCOMP_CPI_NEGOTIATE_MIN) {
1098 1.33 degroote algo = (u_int8_t) cpi;
1099 1.33 degroote must_check_spi = 0;
1100 1.33 degroote must_check_alg = 1;
1101 1.33 degroote }
1102 1.33 degroote }
1103 1.33 degroote
1104 1.33 degroote /*
1105 1.1 jonathan * searching SAD.
1106 1.1 jonathan * XXX: to be checked internal IP header somewhere. Also when
1107 1.1 jonathan * IPsec tunnel packet is received. But ESP tunnel mode is
1108 1.1 jonathan * encrypted so we can't check internal IP header.
1109 1.1 jonathan */
1110 1.1 jonathan s = splsoftnet(); /*called from softclock()*/
1111 1.1 jonathan LIST_FOREACH(sah, &sahtree, chain) {
1112 1.1 jonathan /* search valid state */
1113 1.1 jonathan for (stateidx = 0;
1114 1.1 jonathan stateidx < _ARRAYLEN(saorder_state_valid);
1115 1.1 jonathan stateidx++) {
1116 1.1 jonathan state = saorder_state_valid[stateidx];
1117 1.1 jonathan LIST_FOREACH(sav, &sah->savtree[state], chain) {
1118 1.1 jonathan /* sanity check */
1119 1.1 jonathan KEY_CHKSASTATE(sav->state, state, "key_allocsav");
1120 1.1 jonathan /* do not return entries w/ unusable state */
1121 1.1 jonathan if (sav->state != SADB_SASTATE_MATURE &&
1122 1.1 jonathan sav->state != SADB_SASTATE_DYING)
1123 1.1 jonathan continue;
1124 1.1 jonathan if (proto != sav->sah->saidx.proto)
1125 1.1 jonathan continue;
1126 1.33 degroote if (must_check_spi && spi != sav->spi)
1127 1.33 degroote continue;
1128 1.33 degroote /* XXX only on the ipcomp case */
1129 1.33 degroote if (must_check_alg && algo != sav->alg_comp)
1130 1.1 jonathan continue;
1131 1.33 degroote
1132 1.1 jonathan #if 0 /* don't check src */
1133 1.48 degroote /* Fix port in src->sa */
1134 1.48 degroote
1135 1.1 jonathan /* check src address */
1136 1.1 jonathan if (key_sockaddrcmp(&src->sa, &sav->sah->saidx.src.sa, 0) != 0)
1137 1.1 jonathan continue;
1138 1.1 jonathan #endif
1139 1.48 degroote /* fix port of dst address XXX*/
1140 1.48 degroote key_porttosaddr(__UNCONST(dst), dport);
1141 1.1 jonathan /* check dst address */
1142 1.48 degroote if (key_sockaddrcmp(&dst->sa, &sav->sah->saidx.dst.sa, chkport) != 0)
1143 1.1 jonathan continue;
1144 1.1 jonathan SA_ADDREF(sav);
1145 1.1 jonathan goto done;
1146 1.1 jonathan }
1147 1.1 jonathan }
1148 1.1 jonathan }
1149 1.1 jonathan sav = NULL;
1150 1.1 jonathan done:
1151 1.1 jonathan splx(s);
1152 1.1 jonathan
1153 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1154 1.1 jonathan printf("DP key_allocsa return SA:%p; refcnt %u\n",
1155 1.1 jonathan sav, sav ? sav->refcnt : 0));
1156 1.1 jonathan return sav;
1157 1.1 jonathan }
1158 1.1 jonathan
1159 1.1 jonathan /*
1160 1.1 jonathan * Must be called after calling key_allocsp().
1161 1.1 jonathan * For both the packet without socket and key_freeso().
1162 1.1 jonathan */
1163 1.1 jonathan void
1164 1.1 jonathan _key_freesp(struct secpolicy **spp, const char* where, int tag)
1165 1.1 jonathan {
1166 1.1 jonathan struct secpolicy *sp = *spp;
1167 1.1 jonathan
1168 1.1 jonathan IPSEC_ASSERT(sp != NULL, ("key_freesp: null sp"));
1169 1.1 jonathan
1170 1.1 jonathan SP_DELREF(sp);
1171 1.1 jonathan
1172 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1173 1.1 jonathan printf("DP key_freesp SP:%p (ID=%u) from %s:%u; refcnt now %u\n",
1174 1.1 jonathan sp, sp->id, where, tag, sp->refcnt));
1175 1.1 jonathan
1176 1.1 jonathan if (sp->refcnt == 0) {
1177 1.1 jonathan *spp = NULL;
1178 1.1 jonathan key_delsp(sp);
1179 1.1 jonathan }
1180 1.1 jonathan }
1181 1.1 jonathan
1182 1.1 jonathan /*
1183 1.1 jonathan * Must be called after calling key_allocsp().
1184 1.1 jonathan * For the packet with socket.
1185 1.1 jonathan */
1186 1.1 jonathan void
1187 1.1 jonathan key_freeso(struct socket *so)
1188 1.1 jonathan {
1189 1.1 jonathan /* sanity check */
1190 1.1 jonathan IPSEC_ASSERT(so != NULL, ("key_freeso: null so"));
1191 1.1 jonathan
1192 1.1 jonathan switch (so->so_proto->pr_domain->dom_family) {
1193 1.1 jonathan #ifdef INET
1194 1.1 jonathan case PF_INET:
1195 1.1 jonathan {
1196 1.1 jonathan struct inpcb *pcb = sotoinpcb(so);
1197 1.1 jonathan
1198 1.1 jonathan /* Does it have a PCB ? */
1199 1.1 jonathan if (pcb == NULL)
1200 1.1 jonathan return;
1201 1.1 jonathan key_freesp_so(&pcb->inp_sp->sp_in);
1202 1.1 jonathan key_freesp_so(&pcb->inp_sp->sp_out);
1203 1.1 jonathan }
1204 1.1 jonathan break;
1205 1.1 jonathan #endif
1206 1.1 jonathan #ifdef INET6
1207 1.1 jonathan case PF_INET6:
1208 1.1 jonathan {
1209 1.1 jonathan #ifdef HAVE_NRL_INPCB
1210 1.1 jonathan struct inpcb *pcb = sotoinpcb(so);
1211 1.1 jonathan
1212 1.1 jonathan /* Does it have a PCB ? */
1213 1.1 jonathan if (pcb == NULL)
1214 1.1 jonathan return;
1215 1.1 jonathan key_freesp_so(&pcb->inp_sp->sp_in);
1216 1.1 jonathan key_freesp_so(&pcb->inp_sp->sp_out);
1217 1.1 jonathan #else
1218 1.1 jonathan struct in6pcb *pcb = sotoin6pcb(so);
1219 1.1 jonathan
1220 1.1 jonathan /* Does it have a PCB ? */
1221 1.1 jonathan if (pcb == NULL)
1222 1.1 jonathan return;
1223 1.1 jonathan key_freesp_so(&pcb->in6p_sp->sp_in);
1224 1.1 jonathan key_freesp_so(&pcb->in6p_sp->sp_out);
1225 1.1 jonathan #endif
1226 1.1 jonathan }
1227 1.1 jonathan break;
1228 1.1 jonathan #endif /* INET6 */
1229 1.1 jonathan default:
1230 1.1 jonathan ipseclog((LOG_DEBUG, "key_freeso: unknown address family=%d.\n",
1231 1.1 jonathan so->so_proto->pr_domain->dom_family));
1232 1.1 jonathan return;
1233 1.1 jonathan }
1234 1.1 jonathan }
1235 1.1 jonathan
1236 1.1 jonathan static void
1237 1.1 jonathan key_freesp_so(struct secpolicy **sp)
1238 1.1 jonathan {
1239 1.1 jonathan IPSEC_ASSERT(sp != NULL && *sp != NULL, ("key_freesp_so: null sp"));
1240 1.1 jonathan
1241 1.1 jonathan if ((*sp)->policy == IPSEC_POLICY_ENTRUST ||
1242 1.1 jonathan (*sp)->policy == IPSEC_POLICY_BYPASS)
1243 1.1 jonathan return;
1244 1.1 jonathan
1245 1.1 jonathan IPSEC_ASSERT((*sp)->policy == IPSEC_POLICY_IPSEC,
1246 1.1 jonathan ("key_freesp_so: invalid policy %u", (*sp)->policy));
1247 1.1 jonathan KEY_FREESP(sp);
1248 1.1 jonathan }
1249 1.1 jonathan
1250 1.1 jonathan /*
1251 1.1 jonathan * Must be called after calling key_allocsa().
1252 1.1 jonathan * This function is called by key_freesp() to free some SA allocated
1253 1.1 jonathan * for a policy.
1254 1.1 jonathan */
1255 1.1 jonathan void
1256 1.1 jonathan key_freesav(struct secasvar **psav, const char* where, int tag)
1257 1.1 jonathan {
1258 1.1 jonathan struct secasvar *sav = *psav;
1259 1.1 jonathan
1260 1.1 jonathan IPSEC_ASSERT(sav != NULL, ("key_freesav: null sav"));
1261 1.1 jonathan
1262 1.1 jonathan SA_DELREF(sav);
1263 1.1 jonathan
1264 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1265 1.1 jonathan printf("DP key_freesav SA:%p (SPI %lu) from %s:%u; refcnt now %u\n",
1266 1.1 jonathan sav, (u_long)ntohl(sav->spi),
1267 1.1 jonathan where, tag, sav->refcnt));
1268 1.1 jonathan
1269 1.1 jonathan if (sav->refcnt == 0) {
1270 1.1 jonathan *psav = NULL;
1271 1.1 jonathan key_delsav(sav);
1272 1.1 jonathan }
1273 1.1 jonathan }
1274 1.1 jonathan
1275 1.1 jonathan /* %%% SPD management */
1276 1.1 jonathan /*
1277 1.1 jonathan * free security policy entry.
1278 1.1 jonathan */
1279 1.1 jonathan static void
1280 1.1 jonathan key_delsp(struct secpolicy *sp)
1281 1.1 jonathan {
1282 1.1 jonathan int s;
1283 1.1 jonathan
1284 1.1 jonathan IPSEC_ASSERT(sp != NULL, ("key_delsp: null sp"));
1285 1.1 jonathan
1286 1.18 jonathan key_sp_dead(sp);
1287 1.1 jonathan
1288 1.1 jonathan IPSEC_ASSERT(sp->refcnt == 0,
1289 1.1 jonathan ("key_delsp: SP with references deleted (refcnt %u)",
1290 1.1 jonathan sp->refcnt));
1291 1.1 jonathan
1292 1.1 jonathan s = splsoftnet(); /*called from softclock()*/
1293 1.1 jonathan
1294 1.1 jonathan {
1295 1.1 jonathan struct ipsecrequest *isr = sp->req, *nextisr;
1296 1.1 jonathan
1297 1.1 jonathan while (isr != NULL) {
1298 1.1 jonathan if (isr->sav != NULL) {
1299 1.1 jonathan KEY_FREESAV(&isr->sav);
1300 1.1 jonathan isr->sav = NULL;
1301 1.1 jonathan }
1302 1.1 jonathan
1303 1.1 jonathan nextisr = isr->next;
1304 1.1 jonathan KFREE(isr);
1305 1.1 jonathan isr = nextisr;
1306 1.1 jonathan }
1307 1.1 jonathan }
1308 1.1 jonathan
1309 1.1 jonathan KFREE(sp);
1310 1.1 jonathan
1311 1.1 jonathan splx(s);
1312 1.1 jonathan }
1313 1.1 jonathan
1314 1.1 jonathan /*
1315 1.1 jonathan * search SPD
1316 1.1 jonathan * OUT: NULL : not found
1317 1.1 jonathan * others : found, pointer to a SP.
1318 1.1 jonathan */
1319 1.1 jonathan static struct secpolicy *
1320 1.1 jonathan key_getsp(struct secpolicyindex *spidx)
1321 1.1 jonathan {
1322 1.1 jonathan struct secpolicy *sp;
1323 1.1 jonathan
1324 1.1 jonathan IPSEC_ASSERT(spidx != NULL, ("key_getsp: null spidx"));
1325 1.1 jonathan
1326 1.1 jonathan LIST_FOREACH(sp, &sptree[spidx->dir], chain) {
1327 1.1 jonathan if (sp->state == IPSEC_SPSTATE_DEAD)
1328 1.1 jonathan continue;
1329 1.1 jonathan if (key_cmpspidx_exactly(spidx, &sp->spidx)) {
1330 1.1 jonathan SP_ADDREF(sp);
1331 1.1 jonathan return sp;
1332 1.1 jonathan }
1333 1.1 jonathan }
1334 1.1 jonathan
1335 1.1 jonathan return NULL;
1336 1.1 jonathan }
1337 1.1 jonathan
1338 1.1 jonathan /*
1339 1.1 jonathan * get SP by index.
1340 1.1 jonathan * OUT: NULL : not found
1341 1.1 jonathan * others : found, pointer to a SP.
1342 1.1 jonathan */
1343 1.1 jonathan static struct secpolicy *
1344 1.1 jonathan key_getspbyid(u_int32_t id)
1345 1.1 jonathan {
1346 1.1 jonathan struct secpolicy *sp;
1347 1.1 jonathan
1348 1.1 jonathan LIST_FOREACH(sp, &sptree[IPSEC_DIR_INBOUND], chain) {
1349 1.1 jonathan if (sp->state == IPSEC_SPSTATE_DEAD)
1350 1.1 jonathan continue;
1351 1.1 jonathan if (sp->id == id) {
1352 1.1 jonathan SP_ADDREF(sp);
1353 1.1 jonathan return sp;
1354 1.1 jonathan }
1355 1.1 jonathan }
1356 1.1 jonathan
1357 1.1 jonathan LIST_FOREACH(sp, &sptree[IPSEC_DIR_OUTBOUND], chain) {
1358 1.1 jonathan if (sp->state == IPSEC_SPSTATE_DEAD)
1359 1.1 jonathan continue;
1360 1.1 jonathan if (sp->id == id) {
1361 1.1 jonathan SP_ADDREF(sp);
1362 1.1 jonathan return sp;
1363 1.1 jonathan }
1364 1.1 jonathan }
1365 1.1 jonathan
1366 1.1 jonathan return NULL;
1367 1.1 jonathan }
1368 1.1 jonathan
1369 1.1 jonathan struct secpolicy *
1370 1.1 jonathan key_newsp(const char* where, int tag)
1371 1.1 jonathan {
1372 1.1 jonathan struct secpolicy *newsp = NULL;
1373 1.1 jonathan
1374 1.1 jonathan newsp = (struct secpolicy *)
1375 1.1 jonathan malloc(sizeof(struct secpolicy), M_SECA, M_NOWAIT|M_ZERO);
1376 1.1 jonathan if (newsp) {
1377 1.1 jonathan newsp->refcnt = 1;
1378 1.1 jonathan newsp->req = NULL;
1379 1.1 jonathan }
1380 1.1 jonathan
1381 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
1382 1.1 jonathan printf("DP key_newsp from %s:%u return SP:%p\n",
1383 1.1 jonathan where, tag, newsp));
1384 1.1 jonathan return newsp;
1385 1.1 jonathan }
1386 1.1 jonathan
1387 1.1 jonathan /*
1388 1.1 jonathan * create secpolicy structure from sadb_x_policy structure.
1389 1.1 jonathan * NOTE: `state', `secpolicyindex' in secpolicy structure are not set,
1390 1.1 jonathan * so must be set properly later.
1391 1.1 jonathan */
1392 1.1 jonathan struct secpolicy *
1393 1.49 degroote key_msg2sp(struct sadb_x_policy *xpl0, size_t len, int *error)
1394 1.1 jonathan {
1395 1.1 jonathan struct secpolicy *newsp;
1396 1.1 jonathan
1397 1.1 jonathan /* sanity check */
1398 1.1 jonathan if (xpl0 == NULL)
1399 1.24 christos panic("key_msg2sp: NULL pointer was passed");
1400 1.1 jonathan if (len < sizeof(*xpl0))
1401 1.24 christos panic("key_msg2sp: invalid length");
1402 1.1 jonathan if (len != PFKEY_EXTLEN(xpl0)) {
1403 1.1 jonathan ipseclog((LOG_DEBUG, "key_msg2sp: Invalid msg length.\n"));
1404 1.1 jonathan *error = EINVAL;
1405 1.1 jonathan return NULL;
1406 1.1 jonathan }
1407 1.1 jonathan
1408 1.1 jonathan if ((newsp = KEY_NEWSP()) == NULL) {
1409 1.1 jonathan *error = ENOBUFS;
1410 1.1 jonathan return NULL;
1411 1.1 jonathan }
1412 1.1 jonathan
1413 1.1 jonathan newsp->spidx.dir = xpl0->sadb_x_policy_dir;
1414 1.1 jonathan newsp->policy = xpl0->sadb_x_policy_type;
1415 1.1 jonathan
1416 1.1 jonathan /* check policy */
1417 1.1 jonathan switch (xpl0->sadb_x_policy_type) {
1418 1.1 jonathan case IPSEC_POLICY_DISCARD:
1419 1.1 jonathan case IPSEC_POLICY_NONE:
1420 1.1 jonathan case IPSEC_POLICY_ENTRUST:
1421 1.1 jonathan case IPSEC_POLICY_BYPASS:
1422 1.1 jonathan newsp->req = NULL;
1423 1.1 jonathan break;
1424 1.1 jonathan
1425 1.1 jonathan case IPSEC_POLICY_IPSEC:
1426 1.1 jonathan {
1427 1.1 jonathan int tlen;
1428 1.1 jonathan struct sadb_x_ipsecrequest *xisr;
1429 1.1 jonathan struct ipsecrequest **p_isr = &newsp->req;
1430 1.1 jonathan
1431 1.1 jonathan /* validity check */
1432 1.1 jonathan if (PFKEY_EXTLEN(xpl0) < sizeof(*xpl0)) {
1433 1.1 jonathan ipseclog((LOG_DEBUG,
1434 1.1 jonathan "key_msg2sp: Invalid msg length.\n"));
1435 1.1 jonathan KEY_FREESP(&newsp);
1436 1.1 jonathan *error = EINVAL;
1437 1.1 jonathan return NULL;
1438 1.1 jonathan }
1439 1.1 jonathan
1440 1.1 jonathan tlen = PFKEY_EXTLEN(xpl0) - sizeof(*xpl0);
1441 1.1 jonathan xisr = (struct sadb_x_ipsecrequest *)(xpl0 + 1);
1442 1.1 jonathan
1443 1.1 jonathan while (tlen > 0) {
1444 1.1 jonathan /* length check */
1445 1.1 jonathan if (xisr->sadb_x_ipsecrequest_len < sizeof(*xisr)) {
1446 1.1 jonathan ipseclog((LOG_DEBUG, "key_msg2sp: "
1447 1.1 jonathan "invalid ipsecrequest length.\n"));
1448 1.1 jonathan KEY_FREESP(&newsp);
1449 1.1 jonathan *error = EINVAL;
1450 1.1 jonathan return NULL;
1451 1.1 jonathan }
1452 1.1 jonathan
1453 1.1 jonathan /* allocate request buffer */
1454 1.1 jonathan KMALLOC(*p_isr, struct ipsecrequest *, sizeof(**p_isr));
1455 1.1 jonathan if ((*p_isr) == NULL) {
1456 1.1 jonathan ipseclog((LOG_DEBUG,
1457 1.1 jonathan "key_msg2sp: No more memory.\n"));
1458 1.1 jonathan KEY_FREESP(&newsp);
1459 1.1 jonathan *error = ENOBUFS;
1460 1.1 jonathan return NULL;
1461 1.1 jonathan }
1462 1.49 degroote memset(*p_isr, 0, sizeof(**p_isr));
1463 1.1 jonathan
1464 1.1 jonathan /* set values */
1465 1.1 jonathan (*p_isr)->next = NULL;
1466 1.1 jonathan
1467 1.1 jonathan switch (xisr->sadb_x_ipsecrequest_proto) {
1468 1.1 jonathan case IPPROTO_ESP:
1469 1.1 jonathan case IPPROTO_AH:
1470 1.1 jonathan case IPPROTO_IPCOMP:
1471 1.1 jonathan break;
1472 1.1 jonathan default:
1473 1.1 jonathan ipseclog((LOG_DEBUG,
1474 1.1 jonathan "key_msg2sp: invalid proto type=%u\n",
1475 1.1 jonathan xisr->sadb_x_ipsecrequest_proto));
1476 1.1 jonathan KEY_FREESP(&newsp);
1477 1.1 jonathan *error = EPROTONOSUPPORT;
1478 1.1 jonathan return NULL;
1479 1.1 jonathan }
1480 1.1 jonathan (*p_isr)->saidx.proto = xisr->sadb_x_ipsecrequest_proto;
1481 1.1 jonathan
1482 1.1 jonathan switch (xisr->sadb_x_ipsecrequest_mode) {
1483 1.1 jonathan case IPSEC_MODE_TRANSPORT:
1484 1.1 jonathan case IPSEC_MODE_TUNNEL:
1485 1.1 jonathan break;
1486 1.1 jonathan case IPSEC_MODE_ANY:
1487 1.1 jonathan default:
1488 1.1 jonathan ipseclog((LOG_DEBUG,
1489 1.1 jonathan "key_msg2sp: invalid mode=%u\n",
1490 1.1 jonathan xisr->sadb_x_ipsecrequest_mode));
1491 1.1 jonathan KEY_FREESP(&newsp);
1492 1.1 jonathan *error = EINVAL;
1493 1.1 jonathan return NULL;
1494 1.1 jonathan }
1495 1.1 jonathan (*p_isr)->saidx.mode = xisr->sadb_x_ipsecrequest_mode;
1496 1.1 jonathan
1497 1.1 jonathan switch (xisr->sadb_x_ipsecrequest_level) {
1498 1.1 jonathan case IPSEC_LEVEL_DEFAULT:
1499 1.1 jonathan case IPSEC_LEVEL_USE:
1500 1.1 jonathan case IPSEC_LEVEL_REQUIRE:
1501 1.1 jonathan break;
1502 1.1 jonathan case IPSEC_LEVEL_UNIQUE:
1503 1.1 jonathan /* validity check */
1504 1.1 jonathan /*
1505 1.1 jonathan * If range violation of reqid, kernel will
1506 1.1 jonathan * update it, don't refuse it.
1507 1.1 jonathan */
1508 1.1 jonathan if (xisr->sadb_x_ipsecrequest_reqid
1509 1.1 jonathan > IPSEC_MANUAL_REQID_MAX) {
1510 1.1 jonathan ipseclog((LOG_DEBUG,
1511 1.1 jonathan "key_msg2sp: reqid=%d range "
1512 1.1 jonathan "violation, updated by kernel.\n",
1513 1.1 jonathan xisr->sadb_x_ipsecrequest_reqid));
1514 1.1 jonathan xisr->sadb_x_ipsecrequest_reqid = 0;
1515 1.1 jonathan }
1516 1.1 jonathan
1517 1.1 jonathan /* allocate new reqid id if reqid is zero. */
1518 1.1 jonathan if (xisr->sadb_x_ipsecrequest_reqid == 0) {
1519 1.34 degroote u_int16_t reqid;
1520 1.1 jonathan if ((reqid = key_newreqid()) == 0) {
1521 1.1 jonathan KEY_FREESP(&newsp);
1522 1.1 jonathan *error = ENOBUFS;
1523 1.1 jonathan return NULL;
1524 1.1 jonathan }
1525 1.1 jonathan (*p_isr)->saidx.reqid = reqid;
1526 1.1 jonathan xisr->sadb_x_ipsecrequest_reqid = reqid;
1527 1.1 jonathan } else {
1528 1.1 jonathan /* set it for manual keying. */
1529 1.1 jonathan (*p_isr)->saidx.reqid =
1530 1.1 jonathan xisr->sadb_x_ipsecrequest_reqid;
1531 1.1 jonathan }
1532 1.1 jonathan break;
1533 1.1 jonathan
1534 1.1 jonathan default:
1535 1.1 jonathan ipseclog((LOG_DEBUG, "key_msg2sp: invalid level=%u\n",
1536 1.1 jonathan xisr->sadb_x_ipsecrequest_level));
1537 1.1 jonathan KEY_FREESP(&newsp);
1538 1.1 jonathan *error = EINVAL;
1539 1.1 jonathan return NULL;
1540 1.1 jonathan }
1541 1.1 jonathan (*p_isr)->level = xisr->sadb_x_ipsecrequest_level;
1542 1.1 jonathan
1543 1.1 jonathan /* set IP addresses if there */
1544 1.1 jonathan if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) {
1545 1.1 jonathan struct sockaddr *paddr;
1546 1.1 jonathan
1547 1.1 jonathan paddr = (struct sockaddr *)(xisr + 1);
1548 1.1 jonathan
1549 1.1 jonathan /* validity check */
1550 1.1 jonathan if (paddr->sa_len
1551 1.1 jonathan > sizeof((*p_isr)->saidx.src)) {
1552 1.1 jonathan ipseclog((LOG_DEBUG, "key_msg2sp: invalid request "
1553 1.1 jonathan "address length.\n"));
1554 1.1 jonathan KEY_FREESP(&newsp);
1555 1.1 jonathan *error = EINVAL;
1556 1.1 jonathan return NULL;
1557 1.1 jonathan }
1558 1.49 degroote memcpy(&(*p_isr)->saidx.src, paddr, paddr->sa_len);
1559 1.1 jonathan
1560 1.39 degroote paddr = (struct sockaddr *)((char *)paddr
1561 1.1 jonathan + paddr->sa_len);
1562 1.1 jonathan
1563 1.1 jonathan /* validity check */
1564 1.1 jonathan if (paddr->sa_len
1565 1.1 jonathan > sizeof((*p_isr)->saidx.dst)) {
1566 1.1 jonathan ipseclog((LOG_DEBUG, "key_msg2sp: invalid request "
1567 1.1 jonathan "address length.\n"));
1568 1.1 jonathan KEY_FREESP(&newsp);
1569 1.1 jonathan *error = EINVAL;
1570 1.1 jonathan return NULL;
1571 1.1 jonathan }
1572 1.49 degroote memcpy(&(*p_isr)->saidx.dst, paddr, paddr->sa_len);
1573 1.1 jonathan }
1574 1.1 jonathan
1575 1.1 jonathan (*p_isr)->sav = NULL;
1576 1.1 jonathan (*p_isr)->sp = newsp;
1577 1.1 jonathan
1578 1.1 jonathan /* initialization for the next. */
1579 1.1 jonathan p_isr = &(*p_isr)->next;
1580 1.1 jonathan tlen -= xisr->sadb_x_ipsecrequest_len;
1581 1.1 jonathan
1582 1.1 jonathan /* validity check */
1583 1.1 jonathan if (tlen < 0) {
1584 1.1 jonathan ipseclog((LOG_DEBUG, "key_msg2sp: becoming tlen < 0.\n"));
1585 1.1 jonathan KEY_FREESP(&newsp);
1586 1.1 jonathan *error = EINVAL;
1587 1.1 jonathan return NULL;
1588 1.1 jonathan }
1589 1.1 jonathan
1590 1.39 degroote xisr = (struct sadb_x_ipsecrequest *)((char *)xisr
1591 1.1 jonathan + xisr->sadb_x_ipsecrequest_len);
1592 1.1 jonathan }
1593 1.1 jonathan }
1594 1.1 jonathan break;
1595 1.1 jonathan default:
1596 1.1 jonathan ipseclog((LOG_DEBUG, "key_msg2sp: invalid policy type.\n"));
1597 1.1 jonathan KEY_FREESP(&newsp);
1598 1.1 jonathan *error = EINVAL;
1599 1.1 jonathan return NULL;
1600 1.1 jonathan }
1601 1.1 jonathan
1602 1.1 jonathan *error = 0;
1603 1.1 jonathan return newsp;
1604 1.1 jonathan }
1605 1.1 jonathan
1606 1.34 degroote static u_int16_t
1607 1.1 jonathan key_newreqid()
1608 1.1 jonathan {
1609 1.34 degroote static u_int16_t auto_reqid = IPSEC_MANUAL_REQID_MAX + 1;
1610 1.1 jonathan
1611 1.34 degroote auto_reqid = (auto_reqid == 0xffff
1612 1.1 jonathan ? IPSEC_MANUAL_REQID_MAX + 1 : auto_reqid + 1);
1613 1.1 jonathan
1614 1.1 jonathan /* XXX should be unique check */
1615 1.1 jonathan
1616 1.1 jonathan return auto_reqid;
1617 1.1 jonathan }
1618 1.1 jonathan
1619 1.1 jonathan /*
1620 1.1 jonathan * copy secpolicy struct to sadb_x_policy structure indicated.
1621 1.1 jonathan */
1622 1.1 jonathan struct mbuf *
1623 1.49 degroote key_sp2msg(struct secpolicy *sp)
1624 1.1 jonathan {
1625 1.1 jonathan struct sadb_x_policy *xpl;
1626 1.1 jonathan int tlen;
1627 1.39 degroote char *p;
1628 1.1 jonathan struct mbuf *m;
1629 1.1 jonathan
1630 1.1 jonathan /* sanity check. */
1631 1.1 jonathan if (sp == NULL)
1632 1.24 christos panic("key_sp2msg: NULL pointer was passed");
1633 1.1 jonathan
1634 1.1 jonathan tlen = key_getspreqmsglen(sp);
1635 1.1 jonathan
1636 1.1 jonathan m = key_alloc_mbuf(tlen);
1637 1.1 jonathan if (!m || m->m_next) { /*XXX*/
1638 1.1 jonathan if (m)
1639 1.1 jonathan m_freem(m);
1640 1.1 jonathan return NULL;
1641 1.1 jonathan }
1642 1.1 jonathan
1643 1.1 jonathan m->m_len = tlen;
1644 1.1 jonathan m->m_next = NULL;
1645 1.1 jonathan xpl = mtod(m, struct sadb_x_policy *);
1646 1.49 degroote memset(xpl, 0, tlen);
1647 1.1 jonathan
1648 1.1 jonathan xpl->sadb_x_policy_len = PFKEY_UNIT64(tlen);
1649 1.1 jonathan xpl->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
1650 1.1 jonathan xpl->sadb_x_policy_type = sp->policy;
1651 1.1 jonathan xpl->sadb_x_policy_dir = sp->spidx.dir;
1652 1.1 jonathan xpl->sadb_x_policy_id = sp->id;
1653 1.39 degroote p = (char *)xpl + sizeof(*xpl);
1654 1.1 jonathan
1655 1.1 jonathan /* if is the policy for ipsec ? */
1656 1.1 jonathan if (sp->policy == IPSEC_POLICY_IPSEC) {
1657 1.1 jonathan struct sadb_x_ipsecrequest *xisr;
1658 1.1 jonathan struct ipsecrequest *isr;
1659 1.1 jonathan
1660 1.1 jonathan for (isr = sp->req; isr != NULL; isr = isr->next) {
1661 1.1 jonathan
1662 1.1 jonathan xisr = (struct sadb_x_ipsecrequest *)p;
1663 1.1 jonathan
1664 1.1 jonathan xisr->sadb_x_ipsecrequest_proto = isr->saidx.proto;
1665 1.1 jonathan xisr->sadb_x_ipsecrequest_mode = isr->saidx.mode;
1666 1.1 jonathan xisr->sadb_x_ipsecrequest_level = isr->level;
1667 1.1 jonathan xisr->sadb_x_ipsecrequest_reqid = isr->saidx.reqid;
1668 1.1 jonathan
1669 1.1 jonathan p += sizeof(*xisr);
1670 1.49 degroote memcpy(p, &isr->saidx.src, isr->saidx.src.sa.sa_len);
1671 1.1 jonathan p += isr->saidx.src.sa.sa_len;
1672 1.49 degroote memcpy(p, &isr->saidx.dst, isr->saidx.dst.sa.sa_len);
1673 1.1 jonathan p += isr->saidx.src.sa.sa_len;
1674 1.1 jonathan
1675 1.1 jonathan xisr->sadb_x_ipsecrequest_len =
1676 1.1 jonathan PFKEY_ALIGN8(sizeof(*xisr)
1677 1.1 jonathan + isr->saidx.src.sa.sa_len
1678 1.1 jonathan + isr->saidx.dst.sa.sa_len);
1679 1.1 jonathan }
1680 1.1 jonathan }
1681 1.1 jonathan
1682 1.1 jonathan return m;
1683 1.1 jonathan }
1684 1.1 jonathan
1685 1.1 jonathan /* m will not be freed nor modified */
1686 1.1 jonathan static struct mbuf *
1687 1.1 jonathan key_gather_mbuf(struct mbuf *m, const struct sadb_msghdr *mhp,
1688 1.49 degroote int ndeep, int nitem, ...)
1689 1.1 jonathan {
1690 1.1 jonathan va_list ap;
1691 1.1 jonathan int idx;
1692 1.1 jonathan int i;
1693 1.1 jonathan struct mbuf *result = NULL, *n;
1694 1.1 jonathan int len;
1695 1.1 jonathan
1696 1.1 jonathan if (m == NULL || mhp == NULL)
1697 1.1 jonathan panic("null pointer passed to key_gather");
1698 1.1 jonathan
1699 1.1 jonathan va_start(ap, nitem);
1700 1.1 jonathan for (i = 0; i < nitem; i++) {
1701 1.1 jonathan idx = va_arg(ap, int);
1702 1.1 jonathan if (idx < 0 || idx > SADB_EXT_MAX)
1703 1.1 jonathan goto fail;
1704 1.1 jonathan /* don't attempt to pull empty extension */
1705 1.1 jonathan if (idx == SADB_EXT_RESERVED && mhp->msg == NULL)
1706 1.1 jonathan continue;
1707 1.1 jonathan if (idx != SADB_EXT_RESERVED &&
1708 1.1 jonathan (mhp->ext[idx] == NULL || mhp->extlen[idx] == 0))
1709 1.1 jonathan continue;
1710 1.1 jonathan
1711 1.1 jonathan if (idx == SADB_EXT_RESERVED) {
1712 1.1 jonathan len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
1713 1.1 jonathan #ifdef DIAGNOSTIC
1714 1.1 jonathan if (len > MHLEN)
1715 1.1 jonathan panic("assumption failed");
1716 1.1 jonathan #endif
1717 1.1 jonathan MGETHDR(n, M_DONTWAIT, MT_DATA);
1718 1.1 jonathan if (!n)
1719 1.1 jonathan goto fail;
1720 1.1 jonathan n->m_len = len;
1721 1.1 jonathan n->m_next = NULL;
1722 1.1 jonathan m_copydata(m, 0, sizeof(struct sadb_msg),
1723 1.38 christos mtod(n, void *));
1724 1.1 jonathan } else if (i < ndeep) {
1725 1.1 jonathan len = mhp->extlen[idx];
1726 1.1 jonathan n = key_alloc_mbuf(len);
1727 1.1 jonathan if (!n || n->m_next) { /*XXX*/
1728 1.1 jonathan if (n)
1729 1.1 jonathan m_freem(n);
1730 1.1 jonathan goto fail;
1731 1.1 jonathan }
1732 1.1 jonathan m_copydata(m, mhp->extoff[idx], mhp->extlen[idx],
1733 1.38 christos mtod(n, void *));
1734 1.1 jonathan } else {
1735 1.1 jonathan n = m_copym(m, mhp->extoff[idx], mhp->extlen[idx],
1736 1.1 jonathan M_DONTWAIT);
1737 1.1 jonathan }
1738 1.1 jonathan if (n == NULL)
1739 1.1 jonathan goto fail;
1740 1.1 jonathan
1741 1.1 jonathan if (result)
1742 1.1 jonathan m_cat(result, n);
1743 1.1 jonathan else
1744 1.1 jonathan result = n;
1745 1.1 jonathan }
1746 1.1 jonathan va_end(ap);
1747 1.1 jonathan
1748 1.1 jonathan if ((result->m_flags & M_PKTHDR) != 0) {
1749 1.1 jonathan result->m_pkthdr.len = 0;
1750 1.1 jonathan for (n = result; n; n = n->m_next)
1751 1.1 jonathan result->m_pkthdr.len += n->m_len;
1752 1.1 jonathan }
1753 1.1 jonathan
1754 1.1 jonathan return result;
1755 1.1 jonathan
1756 1.1 jonathan fail:
1757 1.8 thorpej va_end(ap);
1758 1.1 jonathan m_freem(result);
1759 1.1 jonathan return NULL;
1760 1.1 jonathan }
1761 1.1 jonathan
1762 1.1 jonathan /*
1763 1.1 jonathan * SADB_X_SPDADD, SADB_X_SPDSETIDX or SADB_X_SPDUPDATE processing
1764 1.1 jonathan * add an entry to SP database, when received
1765 1.1 jonathan * <base, address(SD), (lifetime(H),) policy>
1766 1.1 jonathan * from the user(?).
1767 1.1 jonathan * Adding to SP database,
1768 1.1 jonathan * and send
1769 1.1 jonathan * <base, address(SD), (lifetime(H),) policy>
1770 1.1 jonathan * to the socket which was send.
1771 1.1 jonathan *
1772 1.1 jonathan * SPDADD set a unique policy entry.
1773 1.1 jonathan * SPDSETIDX like SPDADD without a part of policy requests.
1774 1.1 jonathan * SPDUPDATE replace a unique policy entry.
1775 1.1 jonathan *
1776 1.1 jonathan * m will always be freed.
1777 1.1 jonathan */
1778 1.1 jonathan static int
1779 1.49 degroote key_spdadd(struct socket *so, struct mbuf *m,
1780 1.49 degroote const struct sadb_msghdr *mhp)
1781 1.1 jonathan {
1782 1.1 jonathan struct sadb_address *src0, *dst0;
1783 1.1 jonathan struct sadb_x_policy *xpl0, *xpl;
1784 1.1 jonathan struct sadb_lifetime *lft = NULL;
1785 1.1 jonathan struct secpolicyindex spidx;
1786 1.1 jonathan struct secpolicy *newsp;
1787 1.1 jonathan int error;
1788 1.1 jonathan
1789 1.1 jonathan /* sanity check */
1790 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
1791 1.24 christos panic("key_spdadd: NULL pointer is passed");
1792 1.1 jonathan
1793 1.1 jonathan if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
1794 1.1 jonathan mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
1795 1.1 jonathan mhp->ext[SADB_X_EXT_POLICY] == NULL) {
1796 1.1 jonathan ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
1797 1.1 jonathan return key_senderror(so, m, EINVAL);
1798 1.1 jonathan }
1799 1.1 jonathan if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
1800 1.1 jonathan mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
1801 1.1 jonathan mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
1802 1.1 jonathan ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
1803 1.1 jonathan return key_senderror(so, m, EINVAL);
1804 1.1 jonathan }
1805 1.1 jonathan if (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL) {
1806 1.1 jonathan if (mhp->extlen[SADB_EXT_LIFETIME_HARD]
1807 1.1 jonathan < sizeof(struct sadb_lifetime)) {
1808 1.1 jonathan ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
1809 1.1 jonathan return key_senderror(so, m, EINVAL);
1810 1.1 jonathan }
1811 1.1 jonathan lft = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_HARD];
1812 1.1 jonathan }
1813 1.1 jonathan
1814 1.1 jonathan src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
1815 1.1 jonathan dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
1816 1.1 jonathan xpl0 = (struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY];
1817 1.1 jonathan
1818 1.1 jonathan /* make secindex */
1819 1.1 jonathan /* XXX boundary check against sa_len */
1820 1.1 jonathan KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
1821 1.1 jonathan src0 + 1,
1822 1.1 jonathan dst0 + 1,
1823 1.1 jonathan src0->sadb_address_prefixlen,
1824 1.1 jonathan dst0->sadb_address_prefixlen,
1825 1.1 jonathan src0->sadb_address_proto,
1826 1.1 jonathan &spidx);
1827 1.1 jonathan
1828 1.1 jonathan /* checking the direciton. */
1829 1.1 jonathan switch (xpl0->sadb_x_policy_dir) {
1830 1.1 jonathan case IPSEC_DIR_INBOUND:
1831 1.1 jonathan case IPSEC_DIR_OUTBOUND:
1832 1.1 jonathan break;
1833 1.1 jonathan default:
1834 1.1 jonathan ipseclog((LOG_DEBUG, "key_spdadd: Invalid SP direction.\n"));
1835 1.1 jonathan mhp->msg->sadb_msg_errno = EINVAL;
1836 1.1 jonathan return 0;
1837 1.1 jonathan }
1838 1.1 jonathan
1839 1.1 jonathan /* check policy */
1840 1.1 jonathan /* key_spdadd() accepts DISCARD, NONE and IPSEC. */
1841 1.1 jonathan if (xpl0->sadb_x_policy_type == IPSEC_POLICY_ENTRUST
1842 1.1 jonathan || xpl0->sadb_x_policy_type == IPSEC_POLICY_BYPASS) {
1843 1.1 jonathan ipseclog((LOG_DEBUG, "key_spdadd: Invalid policy type.\n"));
1844 1.1 jonathan return key_senderror(so, m, EINVAL);
1845 1.1 jonathan }
1846 1.1 jonathan
1847 1.1 jonathan /* policy requests are mandatory when action is ipsec. */
1848 1.1 jonathan if (mhp->msg->sadb_msg_type != SADB_X_SPDSETIDX
1849 1.1 jonathan && xpl0->sadb_x_policy_type == IPSEC_POLICY_IPSEC
1850 1.1 jonathan && mhp->extlen[SADB_X_EXT_POLICY] <= sizeof(*xpl0)) {
1851 1.1 jonathan ipseclog((LOG_DEBUG, "key_spdadd: some policy requests part required.\n"));
1852 1.1 jonathan return key_senderror(so, m, EINVAL);
1853 1.1 jonathan }
1854 1.1 jonathan
1855 1.1 jonathan /*
1856 1.1 jonathan * checking there is SP already or not.
1857 1.1 jonathan * SPDUPDATE doesn't depend on whether there is a SP or not.
1858 1.1 jonathan * If the type is either SPDADD or SPDSETIDX AND a SP is found,
1859 1.1 jonathan * then error.
1860 1.1 jonathan */
1861 1.1 jonathan newsp = key_getsp(&spidx);
1862 1.1 jonathan if (mhp->msg->sadb_msg_type == SADB_X_SPDUPDATE) {
1863 1.1 jonathan if (newsp) {
1864 1.18 jonathan key_sp_dead(newsp);
1865 1.18 jonathan key_sp_unlink(newsp); /* XXX jrs ordering */
1866 1.1 jonathan KEY_FREESP(&newsp);
1867 1.18 jonathan newsp = NULL;
1868 1.1 jonathan }
1869 1.1 jonathan } else {
1870 1.1 jonathan if (newsp != NULL) {
1871 1.1 jonathan KEY_FREESP(&newsp);
1872 1.1 jonathan ipseclog((LOG_DEBUG, "key_spdadd: a SP entry exists already.\n"));
1873 1.1 jonathan return key_senderror(so, m, EEXIST);
1874 1.1 jonathan }
1875 1.1 jonathan }
1876 1.6 scw
1877 1.1 jonathan /* allocation new SP entry */
1878 1.1 jonathan if ((newsp = key_msg2sp(xpl0, PFKEY_EXTLEN(xpl0), &error)) == NULL) {
1879 1.1 jonathan return key_senderror(so, m, error);
1880 1.1 jonathan }
1881 1.1 jonathan
1882 1.1 jonathan if ((newsp->id = key_getnewspid()) == 0) {
1883 1.1 jonathan KFREE(newsp);
1884 1.1 jonathan return key_senderror(so, m, ENOBUFS);
1885 1.1 jonathan }
1886 1.1 jonathan
1887 1.1 jonathan /* XXX boundary check against sa_len */
1888 1.1 jonathan KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
1889 1.1 jonathan src0 + 1,
1890 1.1 jonathan dst0 + 1,
1891 1.1 jonathan src0->sadb_address_prefixlen,
1892 1.1 jonathan dst0->sadb_address_prefixlen,
1893 1.1 jonathan src0->sadb_address_proto,
1894 1.1 jonathan &newsp->spidx);
1895 1.1 jonathan
1896 1.1 jonathan /* sanity check on addr pair */
1897 1.1 jonathan if (((struct sockaddr *)(src0 + 1))->sa_family !=
1898 1.1 jonathan ((struct sockaddr *)(dst0+ 1))->sa_family) {
1899 1.1 jonathan KFREE(newsp);
1900 1.1 jonathan return key_senderror(so, m, EINVAL);
1901 1.1 jonathan }
1902 1.1 jonathan if (((struct sockaddr *)(src0 + 1))->sa_len !=
1903 1.1 jonathan ((struct sockaddr *)(dst0+ 1))->sa_len) {
1904 1.1 jonathan KFREE(newsp);
1905 1.1 jonathan return key_senderror(so, m, EINVAL);
1906 1.1 jonathan }
1907 1.1 jonathan #if 1
1908 1.1 jonathan if (newsp->req && newsp->req->saidx.src.sa.sa_family) {
1909 1.1 jonathan struct sockaddr *sa;
1910 1.1 jonathan sa = (struct sockaddr *)(src0 + 1);
1911 1.1 jonathan if (sa->sa_family != newsp->req->saidx.src.sa.sa_family) {
1912 1.1 jonathan KFREE(newsp);
1913 1.1 jonathan return key_senderror(so, m, EINVAL);
1914 1.1 jonathan }
1915 1.1 jonathan }
1916 1.1 jonathan if (newsp->req && newsp->req->saidx.dst.sa.sa_family) {
1917 1.1 jonathan struct sockaddr *sa;
1918 1.1 jonathan sa = (struct sockaddr *)(dst0 + 1);
1919 1.1 jonathan if (sa->sa_family != newsp->req->saidx.dst.sa.sa_family) {
1920 1.1 jonathan KFREE(newsp);
1921 1.1 jonathan return key_senderror(so, m, EINVAL);
1922 1.1 jonathan }
1923 1.1 jonathan }
1924 1.1 jonathan #endif
1925 1.1 jonathan
1926 1.1 jonathan newsp->created = time_second;
1927 1.1 jonathan newsp->lastused = newsp->created;
1928 1.1 jonathan newsp->lifetime = lft ? lft->sadb_lifetime_addtime : 0;
1929 1.1 jonathan newsp->validtime = lft ? lft->sadb_lifetime_usetime : 0;
1930 1.1 jonathan
1931 1.1 jonathan newsp->refcnt = 1; /* do not reclaim until I say I do */
1932 1.1 jonathan newsp->state = IPSEC_SPSTATE_ALIVE;
1933 1.1 jonathan LIST_INSERT_TAIL(&sptree[newsp->spidx.dir], newsp, secpolicy, chain);
1934 1.1 jonathan
1935 1.1 jonathan /* delete the entry in spacqtree */
1936 1.1 jonathan if (mhp->msg->sadb_msg_type == SADB_X_SPDUPDATE) {
1937 1.1 jonathan struct secspacq *spacq;
1938 1.1 jonathan if ((spacq = key_getspacq(&spidx)) != NULL) {
1939 1.1 jonathan /* reset counter in order to deletion by timehandler. */
1940 1.1 jonathan spacq->created = time_second;
1941 1.1 jonathan spacq->count = 0;
1942 1.1 jonathan }
1943 1.1 jonathan }
1944 1.1 jonathan
1945 1.9 thorpej #if defined(__NetBSD__)
1946 1.9 thorpej /* Invalidate all cached SPD pointers in the PCBs. */
1947 1.9 thorpej ipsec_invalpcbcacheall();
1948 1.9 thorpej
1949 1.9 thorpej #if defined(GATEWAY)
1950 1.9 thorpej /* Invalidate the ipflow cache, as well. */
1951 1.51 elad ipflow_invalidate_all(0);
1952 1.42 liamjfoy #ifdef INET6
1953 1.51 elad ip6flow_invalidate_all(0);
1954 1.42 liamjfoy #endif /* INET6 */
1955 1.42 liamjfoy #endif /* GATEWAY */
1956 1.9 thorpej #endif /* __NetBSD__ */
1957 1.9 thorpej
1958 1.1 jonathan {
1959 1.1 jonathan struct mbuf *n, *mpolicy;
1960 1.1 jonathan struct sadb_msg *newmsg;
1961 1.1 jonathan int off;
1962 1.1 jonathan
1963 1.1 jonathan /* create new sadb_msg to reply. */
1964 1.1 jonathan if (lft) {
1965 1.1 jonathan n = key_gather_mbuf(m, mhp, 2, 5, SADB_EXT_RESERVED,
1966 1.1 jonathan SADB_X_EXT_POLICY, SADB_EXT_LIFETIME_HARD,
1967 1.1 jonathan SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
1968 1.1 jonathan } else {
1969 1.1 jonathan n = key_gather_mbuf(m, mhp, 2, 4, SADB_EXT_RESERVED,
1970 1.1 jonathan SADB_X_EXT_POLICY,
1971 1.1 jonathan SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
1972 1.1 jonathan }
1973 1.1 jonathan if (!n)
1974 1.1 jonathan return key_senderror(so, m, ENOBUFS);
1975 1.1 jonathan
1976 1.1 jonathan if (n->m_len < sizeof(*newmsg)) {
1977 1.1 jonathan n = m_pullup(n, sizeof(*newmsg));
1978 1.1 jonathan if (!n)
1979 1.1 jonathan return key_senderror(so, m, ENOBUFS);
1980 1.1 jonathan }
1981 1.1 jonathan newmsg = mtod(n, struct sadb_msg *);
1982 1.1 jonathan newmsg->sadb_msg_errno = 0;
1983 1.1 jonathan newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
1984 1.1 jonathan
1985 1.1 jonathan off = 0;
1986 1.1 jonathan mpolicy = m_pulldown(n, PFKEY_ALIGN8(sizeof(struct sadb_msg)),
1987 1.1 jonathan sizeof(*xpl), &off);
1988 1.1 jonathan if (mpolicy == NULL) {
1989 1.1 jonathan /* n is already freed */
1990 1.1 jonathan return key_senderror(so, m, ENOBUFS);
1991 1.1 jonathan }
1992 1.39 degroote xpl = (struct sadb_x_policy *)(mtod(mpolicy, char *) + off);
1993 1.1 jonathan if (xpl->sadb_x_policy_exttype != SADB_X_EXT_POLICY) {
1994 1.1 jonathan m_freem(n);
1995 1.1 jonathan return key_senderror(so, m, EINVAL);
1996 1.1 jonathan }
1997 1.1 jonathan xpl->sadb_x_policy_id = newsp->id;
1998 1.1 jonathan
1999 1.1 jonathan m_freem(m);
2000 1.1 jonathan return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
2001 1.1 jonathan }
2002 1.1 jonathan }
2003 1.1 jonathan
2004 1.1 jonathan /*
2005 1.1 jonathan * get new policy id.
2006 1.1 jonathan * OUT:
2007 1.1 jonathan * 0: failure.
2008 1.1 jonathan * others: success.
2009 1.1 jonathan */
2010 1.1 jonathan static u_int32_t
2011 1.1 jonathan key_getnewspid()
2012 1.1 jonathan {
2013 1.1 jonathan u_int32_t newid = 0;
2014 1.1 jonathan int count = key_spi_trycnt; /* XXX */
2015 1.1 jonathan struct secpolicy *sp;
2016 1.1 jonathan
2017 1.1 jonathan /* when requesting to allocate spi ranged */
2018 1.1 jonathan while (count--) {
2019 1.1 jonathan newid = (policy_id = (policy_id == ~0 ? 1 : policy_id + 1));
2020 1.1 jonathan
2021 1.1 jonathan if ((sp = key_getspbyid(newid)) == NULL)
2022 1.1 jonathan break;
2023 1.1 jonathan
2024 1.1 jonathan KEY_FREESP(&sp);
2025 1.1 jonathan }
2026 1.1 jonathan
2027 1.1 jonathan if (count == 0 || newid == 0) {
2028 1.1 jonathan ipseclog((LOG_DEBUG, "key_getnewspid: to allocate policy id is failed.\n"));
2029 1.1 jonathan return 0;
2030 1.1 jonathan }
2031 1.1 jonathan
2032 1.1 jonathan return newid;
2033 1.1 jonathan }
2034 1.1 jonathan
2035 1.1 jonathan /*
2036 1.1 jonathan * SADB_SPDDELETE processing
2037 1.1 jonathan * receive
2038 1.1 jonathan * <base, address(SD), policy(*)>
2039 1.1 jonathan * from the user(?), and set SADB_SASTATE_DEAD,
2040 1.1 jonathan * and send,
2041 1.1 jonathan * <base, address(SD), policy(*)>
2042 1.1 jonathan * to the ikmpd.
2043 1.1 jonathan * policy(*) including direction of policy.
2044 1.1 jonathan *
2045 1.1 jonathan * m will always be freed.
2046 1.1 jonathan */
2047 1.1 jonathan static int
2048 1.49 degroote key_spddelete(struct socket *so, struct mbuf *m,
2049 1.49 degroote const struct sadb_msghdr *mhp)
2050 1.1 jonathan {
2051 1.1 jonathan struct sadb_address *src0, *dst0;
2052 1.1 jonathan struct sadb_x_policy *xpl0;
2053 1.1 jonathan struct secpolicyindex spidx;
2054 1.1 jonathan struct secpolicy *sp;
2055 1.1 jonathan
2056 1.1 jonathan /* sanity check */
2057 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
2058 1.24 christos panic("key_spddelete: NULL pointer is passed");
2059 1.1 jonathan
2060 1.1 jonathan if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
2061 1.1 jonathan mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
2062 1.1 jonathan mhp->ext[SADB_X_EXT_POLICY] == NULL) {
2063 1.1 jonathan ipseclog((LOG_DEBUG, "key_spddelete: invalid message is passed.\n"));
2064 1.1 jonathan return key_senderror(so, m, EINVAL);
2065 1.1 jonathan }
2066 1.1 jonathan if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
2067 1.1 jonathan mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
2068 1.1 jonathan mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
2069 1.1 jonathan ipseclog((LOG_DEBUG, "key_spddelete: invalid message is passed.\n"));
2070 1.1 jonathan return key_senderror(so, m, EINVAL);
2071 1.1 jonathan }
2072 1.1 jonathan
2073 1.1 jonathan src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
2074 1.1 jonathan dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
2075 1.1 jonathan xpl0 = (struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY];
2076 1.1 jonathan
2077 1.1 jonathan /* make secindex */
2078 1.1 jonathan /* XXX boundary check against sa_len */
2079 1.1 jonathan KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
2080 1.1 jonathan src0 + 1,
2081 1.1 jonathan dst0 + 1,
2082 1.1 jonathan src0->sadb_address_prefixlen,
2083 1.1 jonathan dst0->sadb_address_prefixlen,
2084 1.1 jonathan src0->sadb_address_proto,
2085 1.1 jonathan &spidx);
2086 1.1 jonathan
2087 1.1 jonathan /* checking the direciton. */
2088 1.1 jonathan switch (xpl0->sadb_x_policy_dir) {
2089 1.1 jonathan case IPSEC_DIR_INBOUND:
2090 1.1 jonathan case IPSEC_DIR_OUTBOUND:
2091 1.1 jonathan break;
2092 1.1 jonathan default:
2093 1.1 jonathan ipseclog((LOG_DEBUG, "key_spddelete: Invalid SP direction.\n"));
2094 1.1 jonathan return key_senderror(so, m, EINVAL);
2095 1.1 jonathan }
2096 1.1 jonathan
2097 1.1 jonathan /* Is there SP in SPD ? */
2098 1.1 jonathan if ((sp = key_getsp(&spidx)) == NULL) {
2099 1.1 jonathan ipseclog((LOG_DEBUG, "key_spddelete: no SP found.\n"));
2100 1.1 jonathan return key_senderror(so, m, EINVAL);
2101 1.1 jonathan }
2102 1.1 jonathan
2103 1.1 jonathan /* save policy id to buffer to be returned. */
2104 1.1 jonathan xpl0->sadb_x_policy_id = sp->id;
2105 1.1 jonathan
2106 1.18 jonathan key_sp_dead(sp);
2107 1.18 jonathan key_sp_unlink(sp); /* XXX jrs ordering */
2108 1.18 jonathan KEY_FREESP(&sp); /* ref gained by key_getspbyid */
2109 1.1 jonathan
2110 1.9 thorpej #if defined(__NetBSD__)
2111 1.9 thorpej /* Invalidate all cached SPD pointers in the PCBs. */
2112 1.9 thorpej ipsec_invalpcbcacheall();
2113 1.9 thorpej
2114 1.9 thorpej /* We're deleting policy; no need to invalidate the ipflow cache. */
2115 1.9 thorpej #endif /* __NetBSD__ */
2116 1.9 thorpej
2117 1.1 jonathan {
2118 1.1 jonathan struct mbuf *n;
2119 1.1 jonathan struct sadb_msg *newmsg;
2120 1.1 jonathan
2121 1.1 jonathan /* create new sadb_msg to reply. */
2122 1.1 jonathan n = key_gather_mbuf(m, mhp, 1, 4, SADB_EXT_RESERVED,
2123 1.1 jonathan SADB_X_EXT_POLICY, SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
2124 1.1 jonathan if (!n)
2125 1.1 jonathan return key_senderror(so, m, ENOBUFS);
2126 1.1 jonathan
2127 1.1 jonathan newmsg = mtod(n, struct sadb_msg *);
2128 1.1 jonathan newmsg->sadb_msg_errno = 0;
2129 1.1 jonathan newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
2130 1.1 jonathan
2131 1.1 jonathan m_freem(m);
2132 1.1 jonathan return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
2133 1.1 jonathan }
2134 1.1 jonathan }
2135 1.1 jonathan
2136 1.1 jonathan /*
2137 1.1 jonathan * SADB_SPDDELETE2 processing
2138 1.1 jonathan * receive
2139 1.1 jonathan * <base, policy(*)>
2140 1.1 jonathan * from the user(?), and set SADB_SASTATE_DEAD,
2141 1.1 jonathan * and send,
2142 1.1 jonathan * <base, policy(*)>
2143 1.1 jonathan * to the ikmpd.
2144 1.1 jonathan * policy(*) including direction of policy.
2145 1.1 jonathan *
2146 1.1 jonathan * m will always be freed.
2147 1.1 jonathan */
2148 1.1 jonathan static int
2149 1.49 degroote key_spddelete2(struct socket *so, struct mbuf *m,
2150 1.49 degroote const struct sadb_msghdr *mhp)
2151 1.1 jonathan {
2152 1.1 jonathan u_int32_t id;
2153 1.1 jonathan struct secpolicy *sp;
2154 1.1 jonathan
2155 1.1 jonathan /* sanity check */
2156 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
2157 1.24 christos panic("key_spddelete2: NULL pointer is passed");
2158 1.1 jonathan
2159 1.1 jonathan if (mhp->ext[SADB_X_EXT_POLICY] == NULL ||
2160 1.1 jonathan mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
2161 1.1 jonathan ipseclog((LOG_DEBUG, "key_spddelete2: invalid message is passed.\n"));
2162 1.1 jonathan key_senderror(so, m, EINVAL);
2163 1.1 jonathan return 0;
2164 1.1 jonathan }
2165 1.1 jonathan
2166 1.1 jonathan id = ((struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
2167 1.1 jonathan
2168 1.1 jonathan /* Is there SP in SPD ? */
2169 1.1 jonathan if ((sp = key_getspbyid(id)) == NULL) {
2170 1.1 jonathan ipseclog((LOG_DEBUG, "key_spddelete2: no SP found id:%u.\n", id));
2171 1.45 degroote return key_senderror(so, m, EINVAL);
2172 1.1 jonathan }
2173 1.1 jonathan
2174 1.18 jonathan key_sp_dead(sp);
2175 1.18 jonathan key_sp_unlink(sp); /* XXX jrs ordering */
2176 1.18 jonathan KEY_FREESP(&sp); /* ref gained by key_getsp */
2177 1.18 jonathan sp = NULL;
2178 1.1 jonathan
2179 1.9 thorpej #if defined(__NetBSD__)
2180 1.9 thorpej /* Invalidate all cached SPD pointers in the PCBs. */
2181 1.9 thorpej ipsec_invalpcbcacheall();
2182 1.9 thorpej
2183 1.9 thorpej /* We're deleting policy; no need to invalidate the ipflow cache. */
2184 1.9 thorpej #endif /* __NetBSD__ */
2185 1.9 thorpej
2186 1.1 jonathan {
2187 1.1 jonathan struct mbuf *n, *nn;
2188 1.1 jonathan struct sadb_msg *newmsg;
2189 1.1 jonathan int off, len;
2190 1.1 jonathan
2191 1.1 jonathan /* create new sadb_msg to reply. */
2192 1.1 jonathan len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
2193 1.1 jonathan
2194 1.1 jonathan if (len > MCLBYTES)
2195 1.1 jonathan return key_senderror(so, m, ENOBUFS);
2196 1.1 jonathan MGETHDR(n, M_DONTWAIT, MT_DATA);
2197 1.1 jonathan if (n && len > MHLEN) {
2198 1.1 jonathan MCLGET(n, M_DONTWAIT);
2199 1.1 jonathan if ((n->m_flags & M_EXT) == 0) {
2200 1.1 jonathan m_freem(n);
2201 1.1 jonathan n = NULL;
2202 1.1 jonathan }
2203 1.1 jonathan }
2204 1.1 jonathan if (!n)
2205 1.1 jonathan return key_senderror(so, m, ENOBUFS);
2206 1.1 jonathan
2207 1.1 jonathan n->m_len = len;
2208 1.1 jonathan n->m_next = NULL;
2209 1.1 jonathan off = 0;
2210 1.1 jonathan
2211 1.39 degroote m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, char *) + off);
2212 1.1 jonathan off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
2213 1.1 jonathan
2214 1.1 jonathan #ifdef DIAGNOSTIC
2215 1.1 jonathan if (off != len)
2216 1.1 jonathan panic("length inconsistency in key_spddelete2");
2217 1.1 jonathan #endif
2218 1.1 jonathan
2219 1.1 jonathan n->m_next = m_copym(m, mhp->extoff[SADB_X_EXT_POLICY],
2220 1.1 jonathan mhp->extlen[SADB_X_EXT_POLICY], M_DONTWAIT);
2221 1.1 jonathan if (!n->m_next) {
2222 1.1 jonathan m_freem(n);
2223 1.1 jonathan return key_senderror(so, m, ENOBUFS);
2224 1.1 jonathan }
2225 1.1 jonathan
2226 1.1 jonathan n->m_pkthdr.len = 0;
2227 1.1 jonathan for (nn = n; nn; nn = nn->m_next)
2228 1.1 jonathan n->m_pkthdr.len += nn->m_len;
2229 1.1 jonathan
2230 1.1 jonathan newmsg = mtod(n, struct sadb_msg *);
2231 1.1 jonathan newmsg->sadb_msg_errno = 0;
2232 1.1 jonathan newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
2233 1.1 jonathan
2234 1.1 jonathan m_freem(m);
2235 1.1 jonathan return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
2236 1.1 jonathan }
2237 1.1 jonathan }
2238 1.1 jonathan
2239 1.1 jonathan /*
2240 1.1 jonathan * SADB_X_GET processing
2241 1.1 jonathan * receive
2242 1.1 jonathan * <base, policy(*)>
2243 1.1 jonathan * from the user(?),
2244 1.1 jonathan * and send,
2245 1.1 jonathan * <base, address(SD), policy>
2246 1.1 jonathan * to the ikmpd.
2247 1.1 jonathan * policy(*) including direction of policy.
2248 1.1 jonathan *
2249 1.1 jonathan * m will always be freed.
2250 1.1 jonathan */
2251 1.1 jonathan static int
2252 1.49 degroote key_spdget(struct socket *so, struct mbuf *m,
2253 1.49 degroote const struct sadb_msghdr *mhp)
2254 1.1 jonathan {
2255 1.1 jonathan u_int32_t id;
2256 1.1 jonathan struct secpolicy *sp;
2257 1.1 jonathan struct mbuf *n;
2258 1.1 jonathan
2259 1.1 jonathan /* sanity check */
2260 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
2261 1.24 christos panic("key_spdget: NULL pointer is passed");
2262 1.1 jonathan
2263 1.1 jonathan if (mhp->ext[SADB_X_EXT_POLICY] == NULL ||
2264 1.1 jonathan mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
2265 1.1 jonathan ipseclog((LOG_DEBUG, "key_spdget: invalid message is passed.\n"));
2266 1.1 jonathan return key_senderror(so, m, EINVAL);
2267 1.1 jonathan }
2268 1.1 jonathan
2269 1.1 jonathan id = ((struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
2270 1.1 jonathan
2271 1.1 jonathan /* Is there SP in SPD ? */
2272 1.1 jonathan if ((sp = key_getspbyid(id)) == NULL) {
2273 1.1 jonathan ipseclog((LOG_DEBUG, "key_spdget: no SP found id:%u.\n", id));
2274 1.1 jonathan return key_senderror(so, m, ENOENT);
2275 1.1 jonathan }
2276 1.1 jonathan
2277 1.46 degroote n = key_setdumpsp(sp, SADB_X_SPDGET, mhp->msg->sadb_msg_seq,
2278 1.46 degroote mhp->msg->sadb_msg_pid);
2279 1.44 degroote KEY_FREESP(&sp); /* ref gained by key_getspbyid */
2280 1.1 jonathan if (n != NULL) {
2281 1.1 jonathan m_freem(m);
2282 1.1 jonathan return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
2283 1.1 jonathan } else
2284 1.1 jonathan return key_senderror(so, m, ENOBUFS);
2285 1.1 jonathan }
2286 1.1 jonathan
2287 1.1 jonathan /*
2288 1.1 jonathan * SADB_X_SPDACQUIRE processing.
2289 1.1 jonathan * Acquire policy and SA(s) for a *OUTBOUND* packet.
2290 1.1 jonathan * send
2291 1.1 jonathan * <base, policy(*)>
2292 1.1 jonathan * to KMD, and expect to receive
2293 1.7 wiz * <base> with SADB_X_SPDACQUIRE if error occurred,
2294 1.1 jonathan * or
2295 1.1 jonathan * <base, policy>
2296 1.1 jonathan * with SADB_X_SPDUPDATE from KMD by PF_KEY.
2297 1.1 jonathan * policy(*) is without policy requests.
2298 1.1 jonathan *
2299 1.1 jonathan * 0 : succeed
2300 1.1 jonathan * others: error number
2301 1.1 jonathan */
2302 1.1 jonathan int
2303 1.49 degroote key_spdacquire(struct secpolicy *sp)
2304 1.1 jonathan {
2305 1.1 jonathan struct mbuf *result = NULL, *m;
2306 1.1 jonathan struct secspacq *newspacq;
2307 1.1 jonathan int error;
2308 1.1 jonathan
2309 1.1 jonathan /* sanity check */
2310 1.1 jonathan if (sp == NULL)
2311 1.24 christos panic("key_spdacquire: NULL pointer is passed");
2312 1.1 jonathan if (sp->req != NULL)
2313 1.24 christos panic("key_spdacquire: called but there is request");
2314 1.1 jonathan if (sp->policy != IPSEC_POLICY_IPSEC)
2315 1.24 christos panic("key_spdacquire: policy mismathed. IPsec is expected");
2316 1.1 jonathan
2317 1.1 jonathan /* Get an entry to check whether sent message or not. */
2318 1.1 jonathan if ((newspacq = key_getspacq(&sp->spidx)) != NULL) {
2319 1.1 jonathan if (key_blockacq_count < newspacq->count) {
2320 1.1 jonathan /* reset counter and do send message. */
2321 1.1 jonathan newspacq->count = 0;
2322 1.1 jonathan } else {
2323 1.1 jonathan /* increment counter and do nothing. */
2324 1.1 jonathan newspacq->count++;
2325 1.1 jonathan return 0;
2326 1.1 jonathan }
2327 1.1 jonathan } else {
2328 1.1 jonathan /* make new entry for blocking to send SADB_ACQUIRE. */
2329 1.1 jonathan if ((newspacq = key_newspacq(&sp->spidx)) == NULL)
2330 1.1 jonathan return ENOBUFS;
2331 1.1 jonathan
2332 1.1 jonathan /* add to acqtree */
2333 1.1 jonathan LIST_INSERT_HEAD(&spacqtree, newspacq, chain);
2334 1.1 jonathan }
2335 1.1 jonathan
2336 1.1 jonathan /* create new sadb_msg to reply. */
2337 1.1 jonathan m = key_setsadbmsg(SADB_X_SPDACQUIRE, 0, 0, 0, 0, 0);
2338 1.1 jonathan if (!m) {
2339 1.1 jonathan error = ENOBUFS;
2340 1.1 jonathan goto fail;
2341 1.1 jonathan }
2342 1.1 jonathan result = m;
2343 1.1 jonathan
2344 1.1 jonathan result->m_pkthdr.len = 0;
2345 1.1 jonathan for (m = result; m; m = m->m_next)
2346 1.1 jonathan result->m_pkthdr.len += m->m_len;
2347 1.1 jonathan
2348 1.1 jonathan mtod(result, struct sadb_msg *)->sadb_msg_len =
2349 1.1 jonathan PFKEY_UNIT64(result->m_pkthdr.len);
2350 1.1 jonathan
2351 1.1 jonathan return key_sendup_mbuf(NULL, m, KEY_SENDUP_REGISTERED);
2352 1.1 jonathan
2353 1.1 jonathan fail:
2354 1.1 jonathan if (result)
2355 1.1 jonathan m_freem(result);
2356 1.1 jonathan return error;
2357 1.1 jonathan }
2358 1.1 jonathan
2359 1.1 jonathan /*
2360 1.1 jonathan * SADB_SPDFLUSH processing
2361 1.1 jonathan * receive
2362 1.1 jonathan * <base>
2363 1.1 jonathan * from the user, and free all entries in secpctree.
2364 1.1 jonathan * and send,
2365 1.1 jonathan * <base>
2366 1.1 jonathan * to the user.
2367 1.1 jonathan * NOTE: what to do is only marking SADB_SASTATE_DEAD.
2368 1.1 jonathan *
2369 1.1 jonathan * m will always be freed.
2370 1.1 jonathan */
2371 1.1 jonathan static int
2372 1.49 degroote key_spdflush(struct socket *so, struct mbuf *m,
2373 1.49 degroote const struct sadb_msghdr *mhp)
2374 1.1 jonathan {
2375 1.1 jonathan struct sadb_msg *newmsg;
2376 1.1 jonathan struct secpolicy *sp;
2377 1.1 jonathan u_int dir;
2378 1.1 jonathan
2379 1.1 jonathan /* sanity check */
2380 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
2381 1.24 christos panic("key_spdflush: NULL pointer is passed");
2382 1.1 jonathan
2383 1.1 jonathan if (m->m_len != PFKEY_ALIGN8(sizeof(struct sadb_msg)))
2384 1.1 jonathan return key_senderror(so, m, EINVAL);
2385 1.1 jonathan
2386 1.1 jonathan for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
2387 1.18 jonathan struct secpolicy * nextsp;
2388 1.18 jonathan for (sp = LIST_FIRST(&sptree[dir]);
2389 1.18 jonathan sp != NULL;
2390 1.18 jonathan sp = nextsp) {
2391 1.18 jonathan
2392 1.18 jonathan nextsp = LIST_NEXT(sp, chain);
2393 1.18 jonathan if (sp->state == IPSEC_SPSTATE_DEAD)
2394 1.18 jonathan continue;
2395 1.18 jonathan key_sp_dead(sp);
2396 1.18 jonathan key_sp_unlink(sp);
2397 1.18 jonathan /* 'sp' dead; continue transfers to 'sp = nextsp' */
2398 1.18 jonathan continue;
2399 1.1 jonathan }
2400 1.1 jonathan }
2401 1.1 jonathan
2402 1.9 thorpej #if defined(__NetBSD__)
2403 1.9 thorpej /* Invalidate all cached SPD pointers in the PCBs. */
2404 1.9 thorpej ipsec_invalpcbcacheall();
2405 1.9 thorpej
2406 1.9 thorpej /* We're deleting policy; no need to invalidate the ipflow cache. */
2407 1.9 thorpej #endif /* __NetBSD__ */
2408 1.9 thorpej
2409 1.1 jonathan if (sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
2410 1.1 jonathan ipseclog((LOG_DEBUG, "key_spdflush: No more memory.\n"));
2411 1.1 jonathan return key_senderror(so, m, ENOBUFS);
2412 1.1 jonathan }
2413 1.1 jonathan
2414 1.1 jonathan if (m->m_next)
2415 1.1 jonathan m_freem(m->m_next);
2416 1.1 jonathan m->m_next = NULL;
2417 1.1 jonathan m->m_pkthdr.len = m->m_len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
2418 1.1 jonathan newmsg = mtod(m, struct sadb_msg *);
2419 1.1 jonathan newmsg->sadb_msg_errno = 0;
2420 1.1 jonathan newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
2421 1.1 jonathan
2422 1.1 jonathan return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
2423 1.1 jonathan }
2424 1.1 jonathan
2425 1.29 christos static struct sockaddr key_src = {
2426 1.29 christos .sa_len = 2,
2427 1.29 christos .sa_family = PF_KEY,
2428 1.29 christos };
2429 1.19 jonathan
2430 1.19 jonathan static struct mbuf *
2431 1.20 jonathan key_setspddump_chain(int *errorp, int *lenp, pid_t pid)
2432 1.19 jonathan {
2433 1.19 jonathan struct secpolicy *sp;
2434 1.19 jonathan int cnt;
2435 1.19 jonathan u_int dir;
2436 1.19 jonathan struct mbuf *m, *n, *prev;
2437 1.19 jonathan int totlen;
2438 1.19 jonathan
2439 1.19 jonathan *lenp = 0;
2440 1.19 jonathan
2441 1.19 jonathan /* search SPD entry and get buffer size. */
2442 1.19 jonathan cnt = 0;
2443 1.19 jonathan for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
2444 1.19 jonathan LIST_FOREACH(sp, &sptree[dir], chain) {
2445 1.19 jonathan cnt++;
2446 1.19 jonathan }
2447 1.19 jonathan }
2448 1.19 jonathan
2449 1.19 jonathan if (cnt == 0) {
2450 1.19 jonathan *errorp = ENOENT;
2451 1.19 jonathan return (NULL);
2452 1.19 jonathan }
2453 1.19 jonathan
2454 1.19 jonathan m = NULL;
2455 1.19 jonathan prev = m;
2456 1.19 jonathan totlen = 0;
2457 1.19 jonathan for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
2458 1.19 jonathan LIST_FOREACH(sp, &sptree[dir], chain) {
2459 1.19 jonathan --cnt;
2460 1.20 jonathan n = key_setdumpsp(sp, SADB_X_SPDDUMP, cnt, pid);
2461 1.19 jonathan
2462 1.19 jonathan if (!n) {
2463 1.19 jonathan *errorp = ENOBUFS;
2464 1.19 jonathan if (m) m_freem(m);
2465 1.19 jonathan return (NULL);
2466 1.19 jonathan }
2467 1.19 jonathan
2468 1.19 jonathan totlen += n->m_pkthdr.len;
2469 1.19 jonathan if (!m) {
2470 1.19 jonathan m = n;
2471 1.19 jonathan } else {
2472 1.19 jonathan prev->m_nextpkt = n;
2473 1.19 jonathan }
2474 1.19 jonathan prev = n;
2475 1.19 jonathan }
2476 1.19 jonathan }
2477 1.19 jonathan
2478 1.19 jonathan *lenp = totlen;
2479 1.19 jonathan *errorp = 0;
2480 1.19 jonathan return (m);
2481 1.19 jonathan }
2482 1.19 jonathan
2483 1.1 jonathan /*
2484 1.1 jonathan * SADB_SPDDUMP processing
2485 1.1 jonathan * receive
2486 1.1 jonathan * <base>
2487 1.1 jonathan * from the user, and dump all SP leaves
2488 1.1 jonathan * and send,
2489 1.1 jonathan * <base> .....
2490 1.1 jonathan * to the ikmpd.
2491 1.1 jonathan *
2492 1.1 jonathan * m will always be freed.
2493 1.1 jonathan */
2494 1.1 jonathan static int
2495 1.49 degroote key_spddump(struct socket *so, struct mbuf *m0,
2496 1.49 degroote const struct sadb_msghdr *mhp)
2497 1.1 jonathan {
2498 1.1 jonathan struct mbuf *n;
2499 1.19 jonathan int error, len;
2500 1.19 jonathan int ok, s;
2501 1.20 jonathan pid_t pid;
2502 1.1 jonathan
2503 1.1 jonathan /* sanity check */
2504 1.19 jonathan if (so == NULL || m0 == NULL || mhp == NULL || mhp->msg == NULL)
2505 1.24 christos panic("key_spddump: NULL pointer is passed");
2506 1.1 jonathan
2507 1.19 jonathan
2508 1.20 jonathan pid = mhp->msg->sadb_msg_pid;
2509 1.19 jonathan /*
2510 1.19 jonathan * If the requestor has insufficient socket-buffer space
2511 1.19 jonathan * for the entire chain, nobody gets any response to the DUMP.
2512 1.19 jonathan * XXX For now, only the requestor ever gets anything.
2513 1.19 jonathan * Moreover, if the requestor has any space at all, they receive
2514 1.19 jonathan * the entire chain, otherwise the request is refused with ENOBUFS.
2515 1.19 jonathan */
2516 1.19 jonathan if (sbspace(&so->so_rcv) <= 0) {
2517 1.19 jonathan return key_senderror(so, m0, ENOBUFS);
2518 1.19 jonathan }
2519 1.19 jonathan
2520 1.19 jonathan s = splsoftnet();
2521 1.20 jonathan n = key_setspddump_chain(&error, &len, pid);
2522 1.19 jonathan splx(s);
2523 1.19 jonathan
2524 1.19 jonathan if (n == NULL) {
2525 1.19 jonathan return key_senderror(so, m0, ENOENT);
2526 1.1 jonathan }
2527 1.52 thorpej {
2528 1.52 thorpej uint64_t *ps = PFKEY_STAT_GETREF();
2529 1.52 thorpej ps[PFKEY_STAT_IN_TOTAL]++;
2530 1.52 thorpej ps[PFKEY_STAT_IN_BYTES] += len;
2531 1.52 thorpej PFKEY_STAT_PUTREF();
2532 1.52 thorpej }
2533 1.1 jonathan
2534 1.19 jonathan /*
2535 1.19 jonathan * PF_KEY DUMP responses are no longer broadcast to all PF_KEY sockets.
2536 1.19 jonathan * The requestor receives either the entire chain, or an
2537 1.19 jonathan * error message with ENOBUFS.
2538 1.19 jonathan */
2539 1.1 jonathan
2540 1.19 jonathan /*
2541 1.19 jonathan * sbappendchainwith record takes the chain of entries, one
2542 1.19 jonathan * packet-record per SPD entry, prepends the key_src sockaddr
2543 1.19 jonathan * to each packet-record, links the sockaddr mbufs into a new
2544 1.19 jonathan * list of records, then appends the entire resulting
2545 1.19 jonathan * list to the requesting socket.
2546 1.19 jonathan */
2547 1.19 jonathan ok = sbappendaddrchain(&so->so_rcv, (struct sockaddr *)&key_src,
2548 1.19 jonathan n, SB_PRIO_ONESHOT_OVERFLOW);
2549 1.1 jonathan
2550 1.19 jonathan if (!ok) {
2551 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_IN_NOMEM);
2552 1.19 jonathan m_freem(n);
2553 1.19 jonathan return key_senderror(so, m0, ENOBUFS);
2554 1.1 jonathan }
2555 1.1 jonathan
2556 1.19 jonathan m_freem(m0);
2557 1.19 jonathan return error;
2558 1.1 jonathan }
2559 1.1 jonathan
2560 1.48 degroote #ifdef IPSEC_NAT_T
2561 1.48 degroote /*
2562 1.48 degroote * SADB_X_NAT_T_NEW_MAPPING. Unused by racoon as of 2005/04/23
2563 1.48 degroote */
2564 1.48 degroote static int
2565 1.49 degroote key_nat_map(struct socket *so, struct mbuf *m,
2566 1.49 degroote const struct sadb_msghdr *mhp)
2567 1.48 degroote {
2568 1.48 degroote struct sadb_x_nat_t_type *type;
2569 1.48 degroote struct sadb_x_nat_t_port *sport;
2570 1.48 degroote struct sadb_x_nat_t_port *dport;
2571 1.48 degroote struct sadb_address *addr;
2572 1.48 degroote struct sadb_x_nat_t_frag *frag;
2573 1.48 degroote
2574 1.48 degroote /* sanity check */
2575 1.48 degroote if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
2576 1.48 degroote panic("key_nat_map: NULL pointer is passed.");
2577 1.48 degroote
2578 1.48 degroote if (mhp->ext[SADB_X_EXT_NAT_T_TYPE] == NULL ||
2579 1.48 degroote mhp->ext[SADB_X_EXT_NAT_T_SPORT] == NULL ||
2580 1.48 degroote mhp->ext[SADB_X_EXT_NAT_T_DPORT] == NULL) {
2581 1.48 degroote ipseclog((LOG_DEBUG, "key_nat_map: invalid message.\n"));
2582 1.48 degroote return key_senderror(so, m, EINVAL);
2583 1.48 degroote }
2584 1.48 degroote if ((mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type)) ||
2585 1.48 degroote (mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport)) ||
2586 1.48 degroote (mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport))) {
2587 1.48 degroote ipseclog((LOG_DEBUG, "key_nat_map: invalid message.\n"));
2588 1.48 degroote return key_senderror(so, m, EINVAL);
2589 1.48 degroote }
2590 1.48 degroote
2591 1.48 degroote if ((mhp->ext[SADB_X_EXT_NAT_T_OA] != NULL) &&
2592 1.48 degroote (mhp->extlen[SADB_X_EXT_NAT_T_OA] < sizeof(*addr))) {
2593 1.48 degroote ipseclog((LOG_DEBUG, "key_nat_map: invalid message\n"));
2594 1.48 degroote return key_senderror(so, m, EINVAL);
2595 1.48 degroote }
2596 1.48 degroote
2597 1.48 degroote if ((mhp->ext[SADB_X_EXT_NAT_T_FRAG] != NULL) &&
2598 1.48 degroote (mhp->extlen[SADB_X_EXT_NAT_T_FRAG] < sizeof(*frag))) {
2599 1.48 degroote ipseclog((LOG_DEBUG, "key_nat_map: invalid message\n"));
2600 1.48 degroote return key_senderror(so, m, EINVAL);
2601 1.48 degroote }
2602 1.48 degroote
2603 1.48 degroote type = (struct sadb_x_nat_t_type *)mhp->ext[SADB_X_EXT_NAT_T_TYPE];
2604 1.48 degroote sport = (struct sadb_x_nat_t_port *)mhp->ext[SADB_X_EXT_NAT_T_SPORT];
2605 1.48 degroote dport = (struct sadb_x_nat_t_port *)mhp->ext[SADB_X_EXT_NAT_T_DPORT];
2606 1.48 degroote addr = (struct sadb_address *)mhp->ext[SADB_X_EXT_NAT_T_OA];
2607 1.48 degroote frag = (struct sadb_x_nat_t_frag *) mhp->ext[SADB_X_EXT_NAT_T_FRAG];
2608 1.48 degroote
2609 1.48 degroote printf("sadb_nat_map called\n");
2610 1.48 degroote
2611 1.48 degroote /*
2612 1.48 degroote * XXX handle that, it should also contain a SA, or anything
2613 1.48 degroote * that enable to update the SA information.
2614 1.48 degroote */
2615 1.48 degroote
2616 1.48 degroote return 0;
2617 1.48 degroote }
2618 1.48 degroote #endif /* IPSEC_NAT_T */
2619 1.48 degroote
2620 1.1 jonathan static struct mbuf *
2621 1.49 degroote key_setdumpsp(struct secpolicy *sp, u_int8_t type, u_int32_t seq, pid_t pid)
2622 1.1 jonathan {
2623 1.1 jonathan struct mbuf *result = NULL, *m;
2624 1.1 jonathan
2625 1.1 jonathan m = key_setsadbmsg(type, 0, SADB_SATYPE_UNSPEC, seq, pid, sp->refcnt);
2626 1.1 jonathan if (!m)
2627 1.1 jonathan goto fail;
2628 1.1 jonathan result = m;
2629 1.1 jonathan
2630 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
2631 1.1 jonathan &sp->spidx.src.sa, sp->spidx.prefs,
2632 1.1 jonathan sp->spidx.ul_proto);
2633 1.1 jonathan if (!m)
2634 1.1 jonathan goto fail;
2635 1.1 jonathan m_cat(result, m);
2636 1.1 jonathan
2637 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
2638 1.1 jonathan &sp->spidx.dst.sa, sp->spidx.prefd,
2639 1.1 jonathan sp->spidx.ul_proto);
2640 1.1 jonathan if (!m)
2641 1.1 jonathan goto fail;
2642 1.1 jonathan m_cat(result, m);
2643 1.1 jonathan
2644 1.1 jonathan m = key_sp2msg(sp);
2645 1.1 jonathan if (!m)
2646 1.1 jonathan goto fail;
2647 1.1 jonathan m_cat(result, m);
2648 1.1 jonathan
2649 1.1 jonathan if ((result->m_flags & M_PKTHDR) == 0)
2650 1.1 jonathan goto fail;
2651 1.1 jonathan
2652 1.1 jonathan if (result->m_len < sizeof(struct sadb_msg)) {
2653 1.1 jonathan result = m_pullup(result, sizeof(struct sadb_msg));
2654 1.1 jonathan if (result == NULL)
2655 1.1 jonathan goto fail;
2656 1.1 jonathan }
2657 1.1 jonathan
2658 1.1 jonathan result->m_pkthdr.len = 0;
2659 1.1 jonathan for (m = result; m; m = m->m_next)
2660 1.1 jonathan result->m_pkthdr.len += m->m_len;
2661 1.1 jonathan
2662 1.1 jonathan mtod(result, struct sadb_msg *)->sadb_msg_len =
2663 1.1 jonathan PFKEY_UNIT64(result->m_pkthdr.len);
2664 1.1 jonathan
2665 1.1 jonathan return result;
2666 1.1 jonathan
2667 1.1 jonathan fail:
2668 1.1 jonathan m_freem(result);
2669 1.1 jonathan return NULL;
2670 1.1 jonathan }
2671 1.1 jonathan
2672 1.1 jonathan /*
2673 1.1 jonathan * get PFKEY message length for security policy and request.
2674 1.1 jonathan */
2675 1.1 jonathan static u_int
2676 1.49 degroote key_getspreqmsglen(struct secpolicy *sp)
2677 1.1 jonathan {
2678 1.1 jonathan u_int tlen;
2679 1.1 jonathan
2680 1.1 jonathan tlen = sizeof(struct sadb_x_policy);
2681 1.1 jonathan
2682 1.1 jonathan /* if is the policy for ipsec ? */
2683 1.1 jonathan if (sp->policy != IPSEC_POLICY_IPSEC)
2684 1.1 jonathan return tlen;
2685 1.1 jonathan
2686 1.1 jonathan /* get length of ipsec requests */
2687 1.1 jonathan {
2688 1.1 jonathan struct ipsecrequest *isr;
2689 1.1 jonathan int len;
2690 1.1 jonathan
2691 1.1 jonathan for (isr = sp->req; isr != NULL; isr = isr->next) {
2692 1.1 jonathan len = sizeof(struct sadb_x_ipsecrequest)
2693 1.1 jonathan + isr->saidx.src.sa.sa_len
2694 1.1 jonathan + isr->saidx.dst.sa.sa_len;
2695 1.1 jonathan
2696 1.1 jonathan tlen += PFKEY_ALIGN8(len);
2697 1.1 jonathan }
2698 1.1 jonathan }
2699 1.1 jonathan
2700 1.1 jonathan return tlen;
2701 1.1 jonathan }
2702 1.1 jonathan
2703 1.1 jonathan /*
2704 1.1 jonathan * SADB_SPDEXPIRE processing
2705 1.1 jonathan * send
2706 1.1 jonathan * <base, address(SD), lifetime(CH), policy>
2707 1.1 jonathan * to KMD by PF_KEY.
2708 1.1 jonathan *
2709 1.1 jonathan * OUT: 0 : succeed
2710 1.1 jonathan * others : error number
2711 1.1 jonathan */
2712 1.1 jonathan static int
2713 1.49 degroote key_spdexpire(struct secpolicy *sp)
2714 1.1 jonathan {
2715 1.1 jonathan int s;
2716 1.1 jonathan struct mbuf *result = NULL, *m;
2717 1.1 jonathan int len;
2718 1.1 jonathan int error = -1;
2719 1.1 jonathan struct sadb_lifetime *lt;
2720 1.1 jonathan
2721 1.1 jonathan /* XXX: Why do we lock ? */
2722 1.1 jonathan s = splsoftnet(); /*called from softclock()*/
2723 1.1 jonathan
2724 1.1 jonathan /* sanity check */
2725 1.1 jonathan if (sp == NULL)
2726 1.24 christos panic("key_spdexpire: NULL pointer is passed");
2727 1.1 jonathan
2728 1.1 jonathan /* set msg header */
2729 1.1 jonathan m = key_setsadbmsg(SADB_X_SPDEXPIRE, 0, 0, 0, 0, 0);
2730 1.1 jonathan if (!m) {
2731 1.1 jonathan error = ENOBUFS;
2732 1.1 jonathan goto fail;
2733 1.1 jonathan }
2734 1.1 jonathan result = m;
2735 1.1 jonathan
2736 1.1 jonathan /* create lifetime extension (current and hard) */
2737 1.1 jonathan len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
2738 1.1 jonathan m = key_alloc_mbuf(len);
2739 1.1 jonathan if (!m || m->m_next) { /*XXX*/
2740 1.1 jonathan if (m)
2741 1.1 jonathan m_freem(m);
2742 1.1 jonathan error = ENOBUFS;
2743 1.1 jonathan goto fail;
2744 1.1 jonathan }
2745 1.49 degroote memset(mtod(m, void *), 0, len);
2746 1.1 jonathan lt = mtod(m, struct sadb_lifetime *);
2747 1.1 jonathan lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
2748 1.1 jonathan lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
2749 1.1 jonathan lt->sadb_lifetime_allocations = 0;
2750 1.1 jonathan lt->sadb_lifetime_bytes = 0;
2751 1.1 jonathan lt->sadb_lifetime_addtime = sp->created;
2752 1.1 jonathan lt->sadb_lifetime_usetime = sp->lastused;
2753 1.39 degroote lt = (struct sadb_lifetime *)(mtod(m, char *) + len / 2);
2754 1.1 jonathan lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
2755 1.1 jonathan lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
2756 1.1 jonathan lt->sadb_lifetime_allocations = 0;
2757 1.1 jonathan lt->sadb_lifetime_bytes = 0;
2758 1.1 jonathan lt->sadb_lifetime_addtime = sp->lifetime;
2759 1.1 jonathan lt->sadb_lifetime_usetime = sp->validtime;
2760 1.1 jonathan m_cat(result, m);
2761 1.1 jonathan
2762 1.1 jonathan /* set sadb_address for source */
2763 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
2764 1.1 jonathan &sp->spidx.src.sa,
2765 1.1 jonathan sp->spidx.prefs, sp->spidx.ul_proto);
2766 1.1 jonathan if (!m) {
2767 1.1 jonathan error = ENOBUFS;
2768 1.1 jonathan goto fail;
2769 1.1 jonathan }
2770 1.1 jonathan m_cat(result, m);
2771 1.1 jonathan
2772 1.1 jonathan /* set sadb_address for destination */
2773 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
2774 1.1 jonathan &sp->spidx.dst.sa,
2775 1.1 jonathan sp->spidx.prefd, sp->spidx.ul_proto);
2776 1.1 jonathan if (!m) {
2777 1.1 jonathan error = ENOBUFS;
2778 1.1 jonathan goto fail;
2779 1.1 jonathan }
2780 1.1 jonathan m_cat(result, m);
2781 1.1 jonathan
2782 1.1 jonathan /* set secpolicy */
2783 1.1 jonathan m = key_sp2msg(sp);
2784 1.1 jonathan if (!m) {
2785 1.1 jonathan error = ENOBUFS;
2786 1.1 jonathan goto fail;
2787 1.1 jonathan }
2788 1.1 jonathan m_cat(result, m);
2789 1.1 jonathan
2790 1.1 jonathan if ((result->m_flags & M_PKTHDR) == 0) {
2791 1.1 jonathan error = EINVAL;
2792 1.1 jonathan goto fail;
2793 1.1 jonathan }
2794 1.1 jonathan
2795 1.1 jonathan if (result->m_len < sizeof(struct sadb_msg)) {
2796 1.1 jonathan result = m_pullup(result, sizeof(struct sadb_msg));
2797 1.1 jonathan if (result == NULL) {
2798 1.1 jonathan error = ENOBUFS;
2799 1.1 jonathan goto fail;
2800 1.1 jonathan }
2801 1.1 jonathan }
2802 1.1 jonathan
2803 1.1 jonathan result->m_pkthdr.len = 0;
2804 1.1 jonathan for (m = result; m; m = m->m_next)
2805 1.1 jonathan result->m_pkthdr.len += m->m_len;
2806 1.1 jonathan
2807 1.1 jonathan mtod(result, struct sadb_msg *)->sadb_msg_len =
2808 1.1 jonathan PFKEY_UNIT64(result->m_pkthdr.len);
2809 1.1 jonathan
2810 1.1 jonathan return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
2811 1.1 jonathan
2812 1.1 jonathan fail:
2813 1.1 jonathan if (result)
2814 1.1 jonathan m_freem(result);
2815 1.1 jonathan splx(s);
2816 1.1 jonathan return error;
2817 1.1 jonathan }
2818 1.1 jonathan
2819 1.1 jonathan /* %%% SAD management */
2820 1.1 jonathan /*
2821 1.1 jonathan * allocating a memory for new SA head, and copy from the values of mhp.
2822 1.1 jonathan * OUT: NULL : failure due to the lack of memory.
2823 1.1 jonathan * others : pointer to new SA head.
2824 1.1 jonathan */
2825 1.1 jonathan static struct secashead *
2826 1.49 degroote key_newsah(struct secasindex *saidx)
2827 1.1 jonathan {
2828 1.1 jonathan struct secashead *newsah;
2829 1.1 jonathan
2830 1.1 jonathan IPSEC_ASSERT(saidx != NULL, ("key_newsaidx: null saidx"));
2831 1.1 jonathan
2832 1.1 jonathan newsah = (struct secashead *)
2833 1.1 jonathan malloc(sizeof(struct secashead), M_SECA, M_NOWAIT|M_ZERO);
2834 1.1 jonathan if (newsah != NULL) {
2835 1.1 jonathan int i;
2836 1.1 jonathan for (i = 0; i < sizeof(newsah->savtree)/sizeof(newsah->savtree[0]); i++)
2837 1.1 jonathan LIST_INIT(&newsah->savtree[i]);
2838 1.1 jonathan newsah->saidx = *saidx;
2839 1.1 jonathan
2840 1.1 jonathan /* add to saidxtree */
2841 1.1 jonathan newsah->state = SADB_SASTATE_MATURE;
2842 1.1 jonathan LIST_INSERT_HEAD(&sahtree, newsah, chain);
2843 1.1 jonathan }
2844 1.1 jonathan return(newsah);
2845 1.1 jonathan }
2846 1.1 jonathan
2847 1.1 jonathan /*
2848 1.1 jonathan * delete SA index and all SA registerd.
2849 1.1 jonathan */
2850 1.1 jonathan static void
2851 1.49 degroote key_delsah(struct secashead *sah)
2852 1.1 jonathan {
2853 1.1 jonathan struct secasvar *sav, *nextsav;
2854 1.1 jonathan u_int stateidx, state;
2855 1.1 jonathan int s;
2856 1.1 jonathan int zombie = 0;
2857 1.1 jonathan
2858 1.1 jonathan /* sanity check */
2859 1.1 jonathan if (sah == NULL)
2860 1.24 christos panic("key_delsah: NULL pointer is passed");
2861 1.1 jonathan
2862 1.1 jonathan s = splsoftnet(); /*called from softclock()*/
2863 1.1 jonathan
2864 1.1 jonathan /* searching all SA registerd in the secindex. */
2865 1.1 jonathan for (stateidx = 0;
2866 1.1 jonathan stateidx < _ARRAYLEN(saorder_state_any);
2867 1.1 jonathan stateidx++) {
2868 1.1 jonathan
2869 1.1 jonathan state = saorder_state_any[stateidx];
2870 1.1 jonathan for (sav = (struct secasvar *)LIST_FIRST(&sah->savtree[state]);
2871 1.1 jonathan sav != NULL;
2872 1.1 jonathan sav = nextsav) {
2873 1.1 jonathan
2874 1.1 jonathan nextsav = LIST_NEXT(sav, chain);
2875 1.1 jonathan
2876 1.1 jonathan if (sav->refcnt == 0) {
2877 1.1 jonathan /* sanity check */
2878 1.1 jonathan KEY_CHKSASTATE(state, sav->state, "key_delsah");
2879 1.1 jonathan KEY_FREESAV(&sav);
2880 1.1 jonathan } else {
2881 1.1 jonathan /* give up to delete this sa */
2882 1.1 jonathan zombie++;
2883 1.1 jonathan }
2884 1.1 jonathan }
2885 1.1 jonathan }
2886 1.1 jonathan
2887 1.1 jonathan /* don't delete sah only if there are savs. */
2888 1.1 jonathan if (zombie) {
2889 1.1 jonathan splx(s);
2890 1.1 jonathan return;
2891 1.1 jonathan }
2892 1.1 jonathan
2893 1.32 joerg rtcache_free(&sah->sa_route);
2894 1.1 jonathan
2895 1.1 jonathan /* remove from tree of SA index */
2896 1.1 jonathan if (__LIST_CHAINED(sah))
2897 1.1 jonathan LIST_REMOVE(sah, chain);
2898 1.1 jonathan
2899 1.1 jonathan KFREE(sah);
2900 1.1 jonathan
2901 1.1 jonathan splx(s);
2902 1.1 jonathan return;
2903 1.1 jonathan }
2904 1.1 jonathan
2905 1.1 jonathan /*
2906 1.1 jonathan * allocating a new SA with LARVAL state. key_add() and key_getspi() call,
2907 1.1 jonathan * and copy the values of mhp into new buffer.
2908 1.1 jonathan * When SAD message type is GETSPI:
2909 1.1 jonathan * to set sequence number from acq_seq++,
2910 1.1 jonathan * to set zero to SPI.
2911 1.1 jonathan * not to call key_setsava().
2912 1.1 jonathan * OUT: NULL : fail
2913 1.1 jonathan * others : pointer to new secasvar.
2914 1.1 jonathan *
2915 1.1 jonathan * does not modify mbuf. does not free mbuf on error.
2916 1.1 jonathan */
2917 1.1 jonathan static struct secasvar *
2918 1.49 degroote key_newsav(struct mbuf *m, const struct sadb_msghdr *mhp,
2919 1.49 degroote struct secashead *sah, int *errp,
2920 1.49 degroote const char* where, int tag)
2921 1.1 jonathan {
2922 1.1 jonathan struct secasvar *newsav;
2923 1.1 jonathan const struct sadb_sa *xsa;
2924 1.1 jonathan
2925 1.1 jonathan /* sanity check */
2926 1.1 jonathan if (m == NULL || mhp == NULL || mhp->msg == NULL || sah == NULL)
2927 1.24 christos panic("key_newsa: NULL pointer is passed");
2928 1.1 jonathan
2929 1.1 jonathan KMALLOC(newsav, struct secasvar *, sizeof(struct secasvar));
2930 1.1 jonathan if (newsav == NULL) {
2931 1.1 jonathan ipseclog((LOG_DEBUG, "key_newsa: No more memory.\n"));
2932 1.1 jonathan *errp = ENOBUFS;
2933 1.1 jonathan goto done;
2934 1.1 jonathan }
2935 1.49 degroote memset(newsav, 0, sizeof(struct secasvar));
2936 1.1 jonathan
2937 1.1 jonathan switch (mhp->msg->sadb_msg_type) {
2938 1.1 jonathan case SADB_GETSPI:
2939 1.1 jonathan newsav->spi = 0;
2940 1.1 jonathan
2941 1.1 jonathan #ifdef IPSEC_DOSEQCHECK
2942 1.1 jonathan /* sync sequence number */
2943 1.1 jonathan if (mhp->msg->sadb_msg_seq == 0)
2944 1.1 jonathan newsav->seq =
2945 1.1 jonathan (acq_seq = (acq_seq == ~0 ? 1 : ++acq_seq));
2946 1.1 jonathan else
2947 1.1 jonathan #endif
2948 1.1 jonathan newsav->seq = mhp->msg->sadb_msg_seq;
2949 1.1 jonathan break;
2950 1.1 jonathan
2951 1.1 jonathan case SADB_ADD:
2952 1.1 jonathan /* sanity check */
2953 1.1 jonathan if (mhp->ext[SADB_EXT_SA] == NULL) {
2954 1.1 jonathan KFREE(newsav), newsav = NULL;
2955 1.1 jonathan ipseclog((LOG_DEBUG, "key_newsa: invalid message is passed.\n"));
2956 1.1 jonathan *errp = EINVAL;
2957 1.1 jonathan goto done;
2958 1.1 jonathan }
2959 1.1 jonathan xsa = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA];
2960 1.1 jonathan newsav->spi = xsa->sadb_sa_spi;
2961 1.1 jonathan newsav->seq = mhp->msg->sadb_msg_seq;
2962 1.1 jonathan break;
2963 1.1 jonathan default:
2964 1.1 jonathan KFREE(newsav), newsav = NULL;
2965 1.1 jonathan *errp = EINVAL;
2966 1.1 jonathan goto done;
2967 1.1 jonathan }
2968 1.1 jonathan
2969 1.1 jonathan /* copy sav values */
2970 1.1 jonathan if (mhp->msg->sadb_msg_type != SADB_GETSPI) {
2971 1.1 jonathan *errp = key_setsaval(newsav, m, mhp);
2972 1.1 jonathan if (*errp) {
2973 1.1 jonathan KFREE(newsav), newsav = NULL;
2974 1.1 jonathan goto done;
2975 1.1 jonathan }
2976 1.1 jonathan }
2977 1.1 jonathan
2978 1.1 jonathan /* reset created */
2979 1.1 jonathan newsav->created = time_second;
2980 1.1 jonathan newsav->pid = mhp->msg->sadb_msg_pid;
2981 1.1 jonathan
2982 1.1 jonathan /* add to satree */
2983 1.1 jonathan newsav->sah = sah;
2984 1.1 jonathan newsav->refcnt = 1;
2985 1.1 jonathan newsav->state = SADB_SASTATE_LARVAL;
2986 1.1 jonathan LIST_INSERT_TAIL(&sah->savtree[SADB_SASTATE_LARVAL], newsav,
2987 1.1 jonathan secasvar, chain);
2988 1.1 jonathan done:
2989 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
2990 1.1 jonathan printf("DP key_newsav from %s:%u return SP:%p\n",
2991 1.1 jonathan where, tag, newsav));
2992 1.1 jonathan
2993 1.1 jonathan return newsav;
2994 1.1 jonathan }
2995 1.1 jonathan
2996 1.1 jonathan /*
2997 1.1 jonathan * free() SA variable entry.
2998 1.1 jonathan */
2999 1.1 jonathan static void
3000 1.49 degroote key_delsav(struct secasvar *sav)
3001 1.1 jonathan {
3002 1.1 jonathan IPSEC_ASSERT(sav != NULL, ("key_delsav: null sav"));
3003 1.1 jonathan IPSEC_ASSERT(sav->refcnt == 0,
3004 1.1 jonathan ("key_delsav: reference count %u > 0", sav->refcnt));
3005 1.1 jonathan
3006 1.1 jonathan /* remove from SA header */
3007 1.1 jonathan if (__LIST_CHAINED(sav))
3008 1.1 jonathan LIST_REMOVE(sav, chain);
3009 1.1 jonathan
3010 1.1 jonathan /*
3011 1.1 jonathan * Cleanup xform state. Note that zeroize'ing causes the
3012 1.1 jonathan * keys to be cleared; otherwise we must do it ourself.
3013 1.1 jonathan */
3014 1.1 jonathan if (sav->tdb_xform != NULL) {
3015 1.1 jonathan sav->tdb_xform->xf_zeroize(sav);
3016 1.1 jonathan sav->tdb_xform = NULL;
3017 1.1 jonathan } else {
3018 1.1 jonathan if (sav->key_auth != NULL)
3019 1.49 degroote memset(_KEYBUF(sav->key_auth), 0, _KEYLEN(sav->key_auth));
3020 1.1 jonathan if (sav->key_enc != NULL)
3021 1.49 degroote memset(_KEYBUF(sav->key_enc), 0, _KEYLEN(sav->key_enc));
3022 1.1 jonathan }
3023 1.1 jonathan if (sav->key_auth != NULL) {
3024 1.1 jonathan KFREE(sav->key_auth);
3025 1.1 jonathan sav->key_auth = NULL;
3026 1.1 jonathan }
3027 1.1 jonathan if (sav->key_enc != NULL) {
3028 1.1 jonathan KFREE(sav->key_enc);
3029 1.1 jonathan sav->key_enc = NULL;
3030 1.1 jonathan }
3031 1.1 jonathan if (sav->sched) {
3032 1.49 degroote memset(sav->sched, 0, sav->schedlen);
3033 1.1 jonathan KFREE(sav->sched);
3034 1.1 jonathan sav->sched = NULL;
3035 1.1 jonathan }
3036 1.1 jonathan if (sav->replay != NULL) {
3037 1.1 jonathan KFREE(sav->replay);
3038 1.1 jonathan sav->replay = NULL;
3039 1.1 jonathan }
3040 1.1 jonathan if (sav->lft_c != NULL) {
3041 1.1 jonathan KFREE(sav->lft_c);
3042 1.1 jonathan sav->lft_c = NULL;
3043 1.1 jonathan }
3044 1.1 jonathan if (sav->lft_h != NULL) {
3045 1.1 jonathan KFREE(sav->lft_h);
3046 1.1 jonathan sav->lft_h = NULL;
3047 1.1 jonathan }
3048 1.1 jonathan if (sav->lft_s != NULL) {
3049 1.1 jonathan KFREE(sav->lft_s);
3050 1.1 jonathan sav->lft_s = NULL;
3051 1.1 jonathan }
3052 1.1 jonathan if (sav->iv != NULL) {
3053 1.1 jonathan KFREE(sav->iv);
3054 1.1 jonathan sav->iv = NULL;
3055 1.1 jonathan }
3056 1.1 jonathan
3057 1.1 jonathan KFREE(sav);
3058 1.1 jonathan
3059 1.1 jonathan return;
3060 1.1 jonathan }
3061 1.1 jonathan
3062 1.1 jonathan /*
3063 1.1 jonathan * search SAD.
3064 1.1 jonathan * OUT:
3065 1.1 jonathan * NULL : not found
3066 1.1 jonathan * others : found, pointer to a SA.
3067 1.1 jonathan */
3068 1.1 jonathan static struct secashead *
3069 1.49 degroote key_getsah(struct secasindex *saidx)
3070 1.1 jonathan {
3071 1.1 jonathan struct secashead *sah;
3072 1.1 jonathan
3073 1.1 jonathan LIST_FOREACH(sah, &sahtree, chain) {
3074 1.1 jonathan if (sah->state == SADB_SASTATE_DEAD)
3075 1.1 jonathan continue;
3076 1.1 jonathan if (key_cmpsaidx(&sah->saidx, saidx, CMP_REQID))
3077 1.1 jonathan return sah;
3078 1.1 jonathan }
3079 1.1 jonathan
3080 1.1 jonathan return NULL;
3081 1.1 jonathan }
3082 1.1 jonathan
3083 1.1 jonathan /*
3084 1.1 jonathan * check not to be duplicated SPI.
3085 1.1 jonathan * NOTE: this function is too slow due to searching all SAD.
3086 1.1 jonathan * OUT:
3087 1.1 jonathan * NULL : not found
3088 1.1 jonathan * others : found, pointer to a SA.
3089 1.1 jonathan */
3090 1.1 jonathan static struct secasvar *
3091 1.49 degroote key_checkspidup(struct secasindex *saidx, u_int32_t spi)
3092 1.1 jonathan {
3093 1.1 jonathan struct secashead *sah;
3094 1.1 jonathan struct secasvar *sav;
3095 1.1 jonathan
3096 1.1 jonathan /* check address family */
3097 1.1 jonathan if (saidx->src.sa.sa_family != saidx->dst.sa.sa_family) {
3098 1.1 jonathan ipseclog((LOG_DEBUG, "key_checkspidup: address family mismatched.\n"));
3099 1.1 jonathan return NULL;
3100 1.1 jonathan }
3101 1.1 jonathan
3102 1.1 jonathan /* check all SAD */
3103 1.1 jonathan LIST_FOREACH(sah, &sahtree, chain) {
3104 1.1 jonathan if (!key_ismyaddr((struct sockaddr *)&sah->saidx.dst))
3105 1.1 jonathan continue;
3106 1.1 jonathan sav = key_getsavbyspi(sah, spi);
3107 1.1 jonathan if (sav != NULL)
3108 1.1 jonathan return sav;
3109 1.1 jonathan }
3110 1.1 jonathan
3111 1.1 jonathan return NULL;
3112 1.1 jonathan }
3113 1.1 jonathan
3114 1.1 jonathan /*
3115 1.1 jonathan * search SAD litmited alive SA, protocol, SPI.
3116 1.1 jonathan * OUT:
3117 1.1 jonathan * NULL : not found
3118 1.1 jonathan * others : found, pointer to a SA.
3119 1.1 jonathan */
3120 1.1 jonathan static struct secasvar *
3121 1.49 degroote key_getsavbyspi(struct secashead *sah, u_int32_t spi)
3122 1.1 jonathan {
3123 1.1 jonathan struct secasvar *sav;
3124 1.1 jonathan u_int stateidx, state;
3125 1.1 jonathan
3126 1.1 jonathan /* search all status */
3127 1.1 jonathan for (stateidx = 0;
3128 1.1 jonathan stateidx < _ARRAYLEN(saorder_state_alive);
3129 1.1 jonathan stateidx++) {
3130 1.1 jonathan
3131 1.1 jonathan state = saorder_state_alive[stateidx];
3132 1.1 jonathan LIST_FOREACH(sav, &sah->savtree[state], chain) {
3133 1.1 jonathan
3134 1.1 jonathan /* sanity check */
3135 1.1 jonathan if (sav->state != state) {
3136 1.1 jonathan ipseclog((LOG_DEBUG, "key_getsavbyspi: "
3137 1.1 jonathan "invalid sav->state (queue: %d SA: %d)\n",
3138 1.1 jonathan state, sav->state));
3139 1.1 jonathan continue;
3140 1.1 jonathan }
3141 1.1 jonathan
3142 1.1 jonathan if (sav->spi == spi)
3143 1.1 jonathan return sav;
3144 1.1 jonathan }
3145 1.1 jonathan }
3146 1.1 jonathan
3147 1.1 jonathan return NULL;
3148 1.1 jonathan }
3149 1.1 jonathan
3150 1.1 jonathan /*
3151 1.1 jonathan * copy SA values from PF_KEY message except *SPI, SEQ, PID, STATE and TYPE*.
3152 1.1 jonathan * You must update these if need.
3153 1.1 jonathan * OUT: 0: success.
3154 1.1 jonathan * !0: failure.
3155 1.1 jonathan *
3156 1.1 jonathan * does not modify mbuf. does not free mbuf on error.
3157 1.1 jonathan */
3158 1.1 jonathan static int
3159 1.49 degroote key_setsaval(struct secasvar *sav, struct mbuf *m,
3160 1.49 degroote const struct sadb_msghdr *mhp)
3161 1.1 jonathan {
3162 1.1 jonathan int error = 0;
3163 1.1 jonathan
3164 1.1 jonathan /* sanity check */
3165 1.1 jonathan if (m == NULL || mhp == NULL || mhp->msg == NULL)
3166 1.24 christos panic("key_setsaval: NULL pointer is passed");
3167 1.1 jonathan
3168 1.1 jonathan /* initialization */
3169 1.1 jonathan sav->replay = NULL;
3170 1.1 jonathan sav->key_auth = NULL;
3171 1.1 jonathan sav->key_enc = NULL;
3172 1.1 jonathan sav->sched = NULL;
3173 1.1 jonathan sav->schedlen = 0;
3174 1.1 jonathan sav->iv = NULL;
3175 1.1 jonathan sav->lft_c = NULL;
3176 1.1 jonathan sav->lft_h = NULL;
3177 1.1 jonathan sav->lft_s = NULL;
3178 1.1 jonathan sav->tdb_xform = NULL; /* transform */
3179 1.1 jonathan sav->tdb_encalgxform = NULL; /* encoding algorithm */
3180 1.1 jonathan sav->tdb_authalgxform = NULL; /* authentication algorithm */
3181 1.1 jonathan sav->tdb_compalgxform = NULL; /* compression algorithm */
3182 1.48 degroote #ifdef IPSEC_NAT_T
3183 1.48 degroote sav->natt_type = 0;
3184 1.48 degroote sav->esp_frag = 0;
3185 1.48 degroote #endif
3186 1.1 jonathan
3187 1.1 jonathan /* SA */
3188 1.1 jonathan if (mhp->ext[SADB_EXT_SA] != NULL) {
3189 1.1 jonathan const struct sadb_sa *sa0;
3190 1.1 jonathan
3191 1.1 jonathan sa0 = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA];
3192 1.1 jonathan if (mhp->extlen[SADB_EXT_SA] < sizeof(*sa0)) {
3193 1.1 jonathan error = EINVAL;
3194 1.1 jonathan goto fail;
3195 1.1 jonathan }
3196 1.1 jonathan
3197 1.1 jonathan sav->alg_auth = sa0->sadb_sa_auth;
3198 1.1 jonathan sav->alg_enc = sa0->sadb_sa_encrypt;
3199 1.1 jonathan sav->flags = sa0->sadb_sa_flags;
3200 1.1 jonathan
3201 1.1 jonathan /* replay window */
3202 1.1 jonathan if ((sa0->sadb_sa_flags & SADB_X_EXT_OLD) == 0) {
3203 1.1 jonathan sav->replay = (struct secreplay *)
3204 1.1 jonathan malloc(sizeof(struct secreplay)+sa0->sadb_sa_replay, M_SECA, M_NOWAIT|M_ZERO);
3205 1.1 jonathan if (sav->replay == NULL) {
3206 1.1 jonathan ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
3207 1.1 jonathan error = ENOBUFS;
3208 1.1 jonathan goto fail;
3209 1.1 jonathan }
3210 1.1 jonathan if (sa0->sadb_sa_replay != 0)
3211 1.40 degroote sav->replay->bitmap = (char*)(sav->replay+1);
3212 1.1 jonathan sav->replay->wsize = sa0->sadb_sa_replay;
3213 1.1 jonathan }
3214 1.1 jonathan }
3215 1.1 jonathan
3216 1.1 jonathan /* Authentication keys */
3217 1.1 jonathan if (mhp->ext[SADB_EXT_KEY_AUTH] != NULL) {
3218 1.1 jonathan const struct sadb_key *key0;
3219 1.1 jonathan int len;
3220 1.1 jonathan
3221 1.1 jonathan key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_AUTH];
3222 1.1 jonathan len = mhp->extlen[SADB_EXT_KEY_AUTH];
3223 1.1 jonathan
3224 1.1 jonathan error = 0;
3225 1.1 jonathan if (len < sizeof(*key0)) {
3226 1.1 jonathan error = EINVAL;
3227 1.1 jonathan goto fail;
3228 1.1 jonathan }
3229 1.1 jonathan switch (mhp->msg->sadb_msg_satype) {
3230 1.1 jonathan case SADB_SATYPE_AH:
3231 1.1 jonathan case SADB_SATYPE_ESP:
3232 1.12 jonathan case SADB_X_SATYPE_TCPSIGNATURE:
3233 1.1 jonathan if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
3234 1.1 jonathan sav->alg_auth != SADB_X_AALG_NULL)
3235 1.1 jonathan error = EINVAL;
3236 1.1 jonathan break;
3237 1.1 jonathan case SADB_X_SATYPE_IPCOMP:
3238 1.1 jonathan default:
3239 1.1 jonathan error = EINVAL;
3240 1.1 jonathan break;
3241 1.1 jonathan }
3242 1.1 jonathan if (error) {
3243 1.1 jonathan ipseclog((LOG_DEBUG, "key_setsaval: invalid key_auth values.\n"));
3244 1.1 jonathan goto fail;
3245 1.1 jonathan }
3246 1.1 jonathan
3247 1.1 jonathan sav->key_auth = (struct sadb_key *)key_newbuf(key0, len);
3248 1.1 jonathan if (sav->key_auth == NULL) {
3249 1.1 jonathan ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
3250 1.1 jonathan error = ENOBUFS;
3251 1.1 jonathan goto fail;
3252 1.1 jonathan }
3253 1.1 jonathan }
3254 1.1 jonathan
3255 1.1 jonathan /* Encryption key */
3256 1.1 jonathan if (mhp->ext[SADB_EXT_KEY_ENCRYPT] != NULL) {
3257 1.1 jonathan const struct sadb_key *key0;
3258 1.1 jonathan int len;
3259 1.1 jonathan
3260 1.1 jonathan key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_ENCRYPT];
3261 1.1 jonathan len = mhp->extlen[SADB_EXT_KEY_ENCRYPT];
3262 1.1 jonathan
3263 1.1 jonathan error = 0;
3264 1.1 jonathan if (len < sizeof(*key0)) {
3265 1.1 jonathan error = EINVAL;
3266 1.1 jonathan goto fail;
3267 1.1 jonathan }
3268 1.1 jonathan switch (mhp->msg->sadb_msg_satype) {
3269 1.1 jonathan case SADB_SATYPE_ESP:
3270 1.1 jonathan if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
3271 1.1 jonathan sav->alg_enc != SADB_EALG_NULL) {
3272 1.1 jonathan error = EINVAL;
3273 1.1 jonathan break;
3274 1.1 jonathan }
3275 1.1 jonathan sav->key_enc = (struct sadb_key *)key_newbuf(key0, len);
3276 1.1 jonathan if (sav->key_enc == NULL) {
3277 1.1 jonathan ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
3278 1.1 jonathan error = ENOBUFS;
3279 1.1 jonathan goto fail;
3280 1.1 jonathan }
3281 1.1 jonathan break;
3282 1.1 jonathan case SADB_X_SATYPE_IPCOMP:
3283 1.1 jonathan if (len != PFKEY_ALIGN8(sizeof(struct sadb_key)))
3284 1.1 jonathan error = EINVAL;
3285 1.1 jonathan sav->key_enc = NULL; /*just in case*/
3286 1.1 jonathan break;
3287 1.1 jonathan case SADB_SATYPE_AH:
3288 1.12 jonathan case SADB_X_SATYPE_TCPSIGNATURE:
3289 1.1 jonathan default:
3290 1.1 jonathan error = EINVAL;
3291 1.1 jonathan break;
3292 1.1 jonathan }
3293 1.1 jonathan if (error) {
3294 1.1 jonathan ipseclog((LOG_DEBUG, "key_setsatval: invalid key_enc value.\n"));
3295 1.1 jonathan goto fail;
3296 1.1 jonathan }
3297 1.1 jonathan }
3298 1.1 jonathan
3299 1.1 jonathan /* set iv */
3300 1.1 jonathan sav->ivlen = 0;
3301 1.1 jonathan
3302 1.1 jonathan switch (mhp->msg->sadb_msg_satype) {
3303 1.1 jonathan case SADB_SATYPE_AH:
3304 1.1 jonathan error = xform_init(sav, XF_AH);
3305 1.1 jonathan break;
3306 1.1 jonathan case SADB_SATYPE_ESP:
3307 1.1 jonathan error = xform_init(sav, XF_ESP);
3308 1.1 jonathan break;
3309 1.1 jonathan case SADB_X_SATYPE_IPCOMP:
3310 1.1 jonathan error = xform_init(sav, XF_IPCOMP);
3311 1.1 jonathan break;
3312 1.12 jonathan case SADB_X_SATYPE_TCPSIGNATURE:
3313 1.12 jonathan error = xform_init(sav, XF_TCPSIGNATURE);
3314 1.12 jonathan break;
3315 1.1 jonathan }
3316 1.1 jonathan if (error) {
3317 1.1 jonathan ipseclog((LOG_DEBUG,
3318 1.1 jonathan "key_setsaval: unable to initialize SA type %u.\n",
3319 1.1 jonathan mhp->msg->sadb_msg_satype));
3320 1.1 jonathan goto fail;
3321 1.1 jonathan }
3322 1.1 jonathan
3323 1.1 jonathan /* reset created */
3324 1.1 jonathan sav->created = time_second;
3325 1.1 jonathan
3326 1.1 jonathan /* make lifetime for CURRENT */
3327 1.1 jonathan KMALLOC(sav->lft_c, struct sadb_lifetime *,
3328 1.1 jonathan sizeof(struct sadb_lifetime));
3329 1.1 jonathan if (sav->lft_c == NULL) {
3330 1.1 jonathan ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
3331 1.1 jonathan error = ENOBUFS;
3332 1.1 jonathan goto fail;
3333 1.1 jonathan }
3334 1.1 jonathan
3335 1.1 jonathan sav->lft_c->sadb_lifetime_len =
3336 1.1 jonathan PFKEY_UNIT64(sizeof(struct sadb_lifetime));
3337 1.1 jonathan sav->lft_c->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
3338 1.1 jonathan sav->lft_c->sadb_lifetime_allocations = 0;
3339 1.1 jonathan sav->lft_c->sadb_lifetime_bytes = 0;
3340 1.1 jonathan sav->lft_c->sadb_lifetime_addtime = time_second;
3341 1.1 jonathan sav->lft_c->sadb_lifetime_usetime = 0;
3342 1.1 jonathan
3343 1.1 jonathan /* lifetimes for HARD and SOFT */
3344 1.1 jonathan {
3345 1.1 jonathan const struct sadb_lifetime *lft0;
3346 1.1 jonathan
3347 1.1 jonathan lft0 = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_HARD];
3348 1.1 jonathan if (lft0 != NULL) {
3349 1.1 jonathan if (mhp->extlen[SADB_EXT_LIFETIME_HARD] < sizeof(*lft0)) {
3350 1.1 jonathan error = EINVAL;
3351 1.1 jonathan goto fail;
3352 1.1 jonathan }
3353 1.1 jonathan sav->lft_h = (struct sadb_lifetime *)key_newbuf(lft0,
3354 1.1 jonathan sizeof(*lft0));
3355 1.1 jonathan if (sav->lft_h == NULL) {
3356 1.1 jonathan ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
3357 1.1 jonathan error = ENOBUFS;
3358 1.1 jonathan goto fail;
3359 1.1 jonathan }
3360 1.1 jonathan /* to be initialize ? */
3361 1.1 jonathan }
3362 1.1 jonathan
3363 1.1 jonathan lft0 = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_SOFT];
3364 1.1 jonathan if (lft0 != NULL) {
3365 1.1 jonathan if (mhp->extlen[SADB_EXT_LIFETIME_SOFT] < sizeof(*lft0)) {
3366 1.1 jonathan error = EINVAL;
3367 1.1 jonathan goto fail;
3368 1.1 jonathan }
3369 1.1 jonathan sav->lft_s = (struct sadb_lifetime *)key_newbuf(lft0,
3370 1.1 jonathan sizeof(*lft0));
3371 1.1 jonathan if (sav->lft_s == NULL) {
3372 1.1 jonathan ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
3373 1.1 jonathan error = ENOBUFS;
3374 1.1 jonathan goto fail;
3375 1.1 jonathan }
3376 1.1 jonathan /* to be initialize ? */
3377 1.1 jonathan }
3378 1.1 jonathan }
3379 1.1 jonathan
3380 1.1 jonathan return 0;
3381 1.1 jonathan
3382 1.1 jonathan fail:
3383 1.1 jonathan /* initialization */
3384 1.1 jonathan if (sav->replay != NULL) {
3385 1.1 jonathan KFREE(sav->replay);
3386 1.1 jonathan sav->replay = NULL;
3387 1.1 jonathan }
3388 1.1 jonathan if (sav->key_auth != NULL) {
3389 1.1 jonathan KFREE(sav->key_auth);
3390 1.1 jonathan sav->key_auth = NULL;
3391 1.1 jonathan }
3392 1.1 jonathan if (sav->key_enc != NULL) {
3393 1.1 jonathan KFREE(sav->key_enc);
3394 1.1 jonathan sav->key_enc = NULL;
3395 1.1 jonathan }
3396 1.1 jonathan if (sav->sched) {
3397 1.1 jonathan KFREE(sav->sched);
3398 1.1 jonathan sav->sched = NULL;
3399 1.1 jonathan }
3400 1.1 jonathan if (sav->iv != NULL) {
3401 1.1 jonathan KFREE(sav->iv);
3402 1.1 jonathan sav->iv = NULL;
3403 1.1 jonathan }
3404 1.1 jonathan if (sav->lft_c != NULL) {
3405 1.1 jonathan KFREE(sav->lft_c);
3406 1.1 jonathan sav->lft_c = NULL;
3407 1.1 jonathan }
3408 1.1 jonathan if (sav->lft_h != NULL) {
3409 1.1 jonathan KFREE(sav->lft_h);
3410 1.1 jonathan sav->lft_h = NULL;
3411 1.1 jonathan }
3412 1.1 jonathan if (sav->lft_s != NULL) {
3413 1.1 jonathan KFREE(sav->lft_s);
3414 1.1 jonathan sav->lft_s = NULL;
3415 1.1 jonathan }
3416 1.1 jonathan
3417 1.1 jonathan return error;
3418 1.1 jonathan }
3419 1.1 jonathan
3420 1.1 jonathan /*
3421 1.1 jonathan * validation with a secasvar entry, and set SADB_SATYPE_MATURE.
3422 1.1 jonathan * OUT: 0: valid
3423 1.1 jonathan * other: errno
3424 1.1 jonathan */
3425 1.1 jonathan static int
3426 1.49 degroote key_mature(struct secasvar *sav)
3427 1.1 jonathan {
3428 1.1 jonathan int error;
3429 1.1 jonathan
3430 1.1 jonathan /* check SPI value */
3431 1.1 jonathan switch (sav->sah->saidx.proto) {
3432 1.1 jonathan case IPPROTO_ESP:
3433 1.1 jonathan case IPPROTO_AH:
3434 1.29 christos if (ntohl(sav->spi) <= 255) {
3435 1.1 jonathan ipseclog((LOG_DEBUG,
3436 1.1 jonathan "key_mature: illegal range of SPI %u.\n",
3437 1.1 jonathan (u_int32_t)ntohl(sav->spi)));
3438 1.1 jonathan return EINVAL;
3439 1.1 jonathan }
3440 1.1 jonathan break;
3441 1.1 jonathan }
3442 1.1 jonathan
3443 1.1 jonathan /* check satype */
3444 1.1 jonathan switch (sav->sah->saidx.proto) {
3445 1.1 jonathan case IPPROTO_ESP:
3446 1.1 jonathan /* check flags */
3447 1.1 jonathan if ((sav->flags & (SADB_X_EXT_OLD|SADB_X_EXT_DERIV)) ==
3448 1.1 jonathan (SADB_X_EXT_OLD|SADB_X_EXT_DERIV)) {
3449 1.1 jonathan ipseclog((LOG_DEBUG, "key_mature: "
3450 1.1 jonathan "invalid flag (derived) given to old-esp.\n"));
3451 1.1 jonathan return EINVAL;
3452 1.1 jonathan }
3453 1.1 jonathan error = xform_init(sav, XF_ESP);
3454 1.1 jonathan break;
3455 1.1 jonathan case IPPROTO_AH:
3456 1.1 jonathan /* check flags */
3457 1.1 jonathan if (sav->flags & SADB_X_EXT_DERIV) {
3458 1.1 jonathan ipseclog((LOG_DEBUG, "key_mature: "
3459 1.1 jonathan "invalid flag (derived) given to AH SA.\n"));
3460 1.1 jonathan return EINVAL;
3461 1.1 jonathan }
3462 1.1 jonathan if (sav->alg_enc != SADB_EALG_NONE) {
3463 1.1 jonathan ipseclog((LOG_DEBUG, "key_mature: "
3464 1.1 jonathan "protocol and algorithm mismated.\n"));
3465 1.1 jonathan return(EINVAL);
3466 1.1 jonathan }
3467 1.1 jonathan error = xform_init(sav, XF_AH);
3468 1.1 jonathan break;
3469 1.1 jonathan case IPPROTO_IPCOMP:
3470 1.1 jonathan if (sav->alg_auth != SADB_AALG_NONE) {
3471 1.1 jonathan ipseclog((LOG_DEBUG, "key_mature: "
3472 1.1 jonathan "protocol and algorithm mismated.\n"));
3473 1.1 jonathan return(EINVAL);
3474 1.1 jonathan }
3475 1.1 jonathan if ((sav->flags & SADB_X_EXT_RAWCPI) == 0
3476 1.1 jonathan && ntohl(sav->spi) >= 0x10000) {
3477 1.1 jonathan ipseclog((LOG_DEBUG, "key_mature: invalid cpi for IPComp.\n"));
3478 1.1 jonathan return(EINVAL);
3479 1.1 jonathan }
3480 1.1 jonathan error = xform_init(sav, XF_IPCOMP);
3481 1.1 jonathan break;
3482 1.12 jonathan case IPPROTO_TCP:
3483 1.12 jonathan if (sav->alg_enc != SADB_EALG_NONE) {
3484 1.12 jonathan ipseclog((LOG_DEBUG, "%s: protocol and algorithm "
3485 1.12 jonathan "mismated.\n", __func__));
3486 1.12 jonathan return(EINVAL);
3487 1.12 jonathan }
3488 1.12 jonathan error = xform_init(sav, XF_TCPSIGNATURE);
3489 1.12 jonathan break;
3490 1.1 jonathan default:
3491 1.1 jonathan ipseclog((LOG_DEBUG, "key_mature: Invalid satype.\n"));
3492 1.1 jonathan error = EPROTONOSUPPORT;
3493 1.1 jonathan break;
3494 1.1 jonathan }
3495 1.1 jonathan if (error == 0)
3496 1.1 jonathan key_sa_chgstate(sav, SADB_SASTATE_MATURE);
3497 1.1 jonathan return (error);
3498 1.1 jonathan }
3499 1.1 jonathan
3500 1.1 jonathan /*
3501 1.1 jonathan * subroutine for SADB_GET and SADB_DUMP.
3502 1.1 jonathan */
3503 1.1 jonathan static struct mbuf *
3504 1.49 degroote key_setdumpsa(struct secasvar *sav, u_int8_t type, u_int8_t satype,
3505 1.49 degroote u_int32_t seq, u_int32_t pid)
3506 1.1 jonathan {
3507 1.1 jonathan struct mbuf *result = NULL, *tres = NULL, *m;
3508 1.1 jonathan int l = 0;
3509 1.1 jonathan int i;
3510 1.1 jonathan void *p;
3511 1.1 jonathan int dumporder[] = {
3512 1.1 jonathan SADB_EXT_SA, SADB_X_EXT_SA2,
3513 1.1 jonathan SADB_EXT_LIFETIME_HARD, SADB_EXT_LIFETIME_SOFT,
3514 1.1 jonathan SADB_EXT_LIFETIME_CURRENT, SADB_EXT_ADDRESS_SRC,
3515 1.1 jonathan SADB_EXT_ADDRESS_DST, SADB_EXT_ADDRESS_PROXY, SADB_EXT_KEY_AUTH,
3516 1.1 jonathan SADB_EXT_KEY_ENCRYPT, SADB_EXT_IDENTITY_SRC,
3517 1.1 jonathan SADB_EXT_IDENTITY_DST, SADB_EXT_SENSITIVITY,
3518 1.48 degroote #ifdef IPSEC_NAT_T
3519 1.48 degroote SADB_X_EXT_NAT_T_TYPE, SADB_X_EXT_NAT_T_SPORT,
3520 1.48 degroote SADB_X_EXT_NAT_T_DPORT, SADB_X_EXT_NAT_T_OA,
3521 1.48 degroote SADB_X_EXT_NAT_T_FRAG,
3522 1.48 degroote #endif
3523 1.48 degroote
3524 1.1 jonathan };
3525 1.1 jonathan
3526 1.1 jonathan m = key_setsadbmsg(type, 0, satype, seq, pid, sav->refcnt);
3527 1.1 jonathan if (m == NULL)
3528 1.1 jonathan goto fail;
3529 1.1 jonathan result = m;
3530 1.1 jonathan
3531 1.1 jonathan for (i = sizeof(dumporder)/sizeof(dumporder[0]) - 1; i >= 0; i--) {
3532 1.1 jonathan m = NULL;
3533 1.1 jonathan p = NULL;
3534 1.1 jonathan switch (dumporder[i]) {
3535 1.1 jonathan case SADB_EXT_SA:
3536 1.1 jonathan m = key_setsadbsa(sav);
3537 1.1 jonathan if (!m)
3538 1.1 jonathan goto fail;
3539 1.1 jonathan break;
3540 1.1 jonathan
3541 1.1 jonathan case SADB_X_EXT_SA2:
3542 1.1 jonathan m = key_setsadbxsa2(sav->sah->saidx.mode,
3543 1.1 jonathan sav->replay ? sav->replay->count : 0,
3544 1.1 jonathan sav->sah->saidx.reqid);
3545 1.1 jonathan if (!m)
3546 1.1 jonathan goto fail;
3547 1.1 jonathan break;
3548 1.1 jonathan
3549 1.1 jonathan case SADB_EXT_ADDRESS_SRC:
3550 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
3551 1.1 jonathan &sav->sah->saidx.src.sa,
3552 1.1 jonathan FULLMASK, IPSEC_ULPROTO_ANY);
3553 1.1 jonathan if (!m)
3554 1.1 jonathan goto fail;
3555 1.1 jonathan break;
3556 1.1 jonathan
3557 1.1 jonathan case SADB_EXT_ADDRESS_DST:
3558 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
3559 1.1 jonathan &sav->sah->saidx.dst.sa,
3560 1.1 jonathan FULLMASK, IPSEC_ULPROTO_ANY);
3561 1.1 jonathan if (!m)
3562 1.1 jonathan goto fail;
3563 1.1 jonathan break;
3564 1.1 jonathan
3565 1.1 jonathan case SADB_EXT_KEY_AUTH:
3566 1.1 jonathan if (!sav->key_auth)
3567 1.1 jonathan continue;
3568 1.1 jonathan l = PFKEY_UNUNIT64(sav->key_auth->sadb_key_len);
3569 1.1 jonathan p = sav->key_auth;
3570 1.1 jonathan break;
3571 1.1 jonathan
3572 1.1 jonathan case SADB_EXT_KEY_ENCRYPT:
3573 1.1 jonathan if (!sav->key_enc)
3574 1.1 jonathan continue;
3575 1.1 jonathan l = PFKEY_UNUNIT64(sav->key_enc->sadb_key_len);
3576 1.1 jonathan p = sav->key_enc;
3577 1.1 jonathan break;
3578 1.1 jonathan
3579 1.1 jonathan case SADB_EXT_LIFETIME_CURRENT:
3580 1.1 jonathan if (!sav->lft_c)
3581 1.1 jonathan continue;
3582 1.1 jonathan l = PFKEY_UNUNIT64(((struct sadb_ext *)sav->lft_c)->sadb_ext_len);
3583 1.1 jonathan p = sav->lft_c;
3584 1.1 jonathan break;
3585 1.1 jonathan
3586 1.1 jonathan case SADB_EXT_LIFETIME_HARD:
3587 1.1 jonathan if (!sav->lft_h)
3588 1.1 jonathan continue;
3589 1.1 jonathan l = PFKEY_UNUNIT64(((struct sadb_ext *)sav->lft_h)->sadb_ext_len);
3590 1.1 jonathan p = sav->lft_h;
3591 1.1 jonathan break;
3592 1.1 jonathan
3593 1.1 jonathan case SADB_EXT_LIFETIME_SOFT:
3594 1.1 jonathan if (!sav->lft_s)
3595 1.1 jonathan continue;
3596 1.1 jonathan l = PFKEY_UNUNIT64(((struct sadb_ext *)sav->lft_s)->sadb_ext_len);
3597 1.1 jonathan p = sav->lft_s;
3598 1.1 jonathan break;
3599 1.1 jonathan
3600 1.48 degroote #ifdef IPSEC_NAT_T
3601 1.48 degroote case SADB_X_EXT_NAT_T_TYPE:
3602 1.48 degroote if ((m = key_setsadbxtype(sav->natt_type)) == NULL)
3603 1.48 degroote goto fail;
3604 1.48 degroote break;
3605 1.48 degroote
3606 1.48 degroote case SADB_X_EXT_NAT_T_DPORT:
3607 1.48 degroote if ((m = key_setsadbxport(
3608 1.48 degroote key_portfromsaddr(&sav->sah->saidx.dst),
3609 1.48 degroote SADB_X_EXT_NAT_T_DPORT)) == NULL)
3610 1.48 degroote goto fail;
3611 1.48 degroote break;
3612 1.48 degroote
3613 1.48 degroote case SADB_X_EXT_NAT_T_SPORT:
3614 1.48 degroote if ((m = key_setsadbxport(
3615 1.48 degroote key_portfromsaddr(&sav->sah->saidx.src),
3616 1.48 degroote SADB_X_EXT_NAT_T_SPORT)) == NULL)
3617 1.48 degroote goto fail;
3618 1.48 degroote break;
3619 1.48 degroote
3620 1.48 degroote case SADB_X_EXT_NAT_T_OA:
3621 1.48 degroote case SADB_X_EXT_NAT_T_FRAG:
3622 1.48 degroote continue;
3623 1.48 degroote #endif
3624 1.48 degroote
3625 1.1 jonathan case SADB_EXT_ADDRESS_PROXY:
3626 1.1 jonathan case SADB_EXT_IDENTITY_SRC:
3627 1.1 jonathan case SADB_EXT_IDENTITY_DST:
3628 1.1 jonathan /* XXX: should we brought from SPD ? */
3629 1.1 jonathan case SADB_EXT_SENSITIVITY:
3630 1.1 jonathan default:
3631 1.1 jonathan continue;
3632 1.1 jonathan }
3633 1.1 jonathan
3634 1.1 jonathan if ((!m && !p) || (m && p))
3635 1.1 jonathan goto fail;
3636 1.1 jonathan if (p && tres) {
3637 1.1 jonathan M_PREPEND(tres, l, M_DONTWAIT);
3638 1.1 jonathan if (!tres)
3639 1.1 jonathan goto fail;
3640 1.49 degroote memcpy(mtod(tres, void *), p, l);
3641 1.1 jonathan continue;
3642 1.1 jonathan }
3643 1.1 jonathan if (p) {
3644 1.1 jonathan m = key_alloc_mbuf(l);
3645 1.1 jonathan if (!m)
3646 1.1 jonathan goto fail;
3647 1.1 jonathan m_copyback(m, 0, l, p);
3648 1.1 jonathan }
3649 1.1 jonathan
3650 1.1 jonathan if (tres)
3651 1.1 jonathan m_cat(m, tres);
3652 1.1 jonathan tres = m;
3653 1.1 jonathan }
3654 1.1 jonathan
3655 1.1 jonathan m_cat(result, tres);
3656 1.1 jonathan
3657 1.1 jonathan if (result->m_len < sizeof(struct sadb_msg)) {
3658 1.1 jonathan result = m_pullup(result, sizeof(struct sadb_msg));
3659 1.1 jonathan if (result == NULL)
3660 1.1 jonathan goto fail;
3661 1.1 jonathan }
3662 1.1 jonathan
3663 1.1 jonathan result->m_pkthdr.len = 0;
3664 1.1 jonathan for (m = result; m; m = m->m_next)
3665 1.1 jonathan result->m_pkthdr.len += m->m_len;
3666 1.1 jonathan
3667 1.1 jonathan mtod(result, struct sadb_msg *)->sadb_msg_len =
3668 1.1 jonathan PFKEY_UNIT64(result->m_pkthdr.len);
3669 1.1 jonathan
3670 1.1 jonathan return result;
3671 1.1 jonathan
3672 1.1 jonathan fail:
3673 1.1 jonathan m_freem(result);
3674 1.1 jonathan m_freem(tres);
3675 1.1 jonathan return NULL;
3676 1.1 jonathan }
3677 1.1 jonathan
3678 1.48 degroote
3679 1.48 degroote #ifdef IPSEC_NAT_T
3680 1.48 degroote /*
3681 1.48 degroote * set a type in sadb_x_nat_t_type
3682 1.48 degroote */
3683 1.48 degroote static struct mbuf *
3684 1.49 degroote key_setsadbxtype(u_int16_t type)
3685 1.48 degroote {
3686 1.48 degroote struct mbuf *m;
3687 1.48 degroote size_t len;
3688 1.48 degroote struct sadb_x_nat_t_type *p;
3689 1.48 degroote
3690 1.48 degroote len = PFKEY_ALIGN8(sizeof(struct sadb_x_nat_t_type));
3691 1.48 degroote
3692 1.48 degroote m = key_alloc_mbuf(len);
3693 1.48 degroote if (!m || m->m_next) { /*XXX*/
3694 1.48 degroote if (m)
3695 1.48 degroote m_freem(m);
3696 1.48 degroote return NULL;
3697 1.48 degroote }
3698 1.48 degroote
3699 1.48 degroote p = mtod(m, struct sadb_x_nat_t_type *);
3700 1.48 degroote
3701 1.49 degroote memset(p, 0, len);
3702 1.48 degroote p->sadb_x_nat_t_type_len = PFKEY_UNIT64(len);
3703 1.48 degroote p->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE;
3704 1.48 degroote p->sadb_x_nat_t_type_type = type;
3705 1.48 degroote
3706 1.48 degroote return m;
3707 1.48 degroote }
3708 1.48 degroote /*
3709 1.48 degroote * set a port in sadb_x_nat_t_port. port is in network order
3710 1.48 degroote */
3711 1.48 degroote static struct mbuf *
3712 1.49 degroote key_setsadbxport(u_int16_t port, u_int16_t type)
3713 1.48 degroote {
3714 1.48 degroote struct mbuf *m;
3715 1.48 degroote size_t len;
3716 1.48 degroote struct sadb_x_nat_t_port *p;
3717 1.48 degroote
3718 1.48 degroote len = PFKEY_ALIGN8(sizeof(struct sadb_x_nat_t_port));
3719 1.48 degroote
3720 1.48 degroote m = key_alloc_mbuf(len);
3721 1.48 degroote if (!m || m->m_next) { /*XXX*/
3722 1.48 degroote if (m)
3723 1.48 degroote m_freem(m);
3724 1.48 degroote return NULL;
3725 1.48 degroote }
3726 1.48 degroote
3727 1.48 degroote p = mtod(m, struct sadb_x_nat_t_port *);
3728 1.48 degroote
3729 1.49 degroote memset(p, 0, len);
3730 1.48 degroote p->sadb_x_nat_t_port_len = PFKEY_UNIT64(len);
3731 1.48 degroote p->sadb_x_nat_t_port_exttype = type;
3732 1.48 degroote p->sadb_x_nat_t_port_port = port;
3733 1.48 degroote
3734 1.48 degroote return m;
3735 1.48 degroote }
3736 1.48 degroote
3737 1.48 degroote /*
3738 1.48 degroote * Get port from sockaddr, port is in network order
3739 1.48 degroote */
3740 1.48 degroote u_int16_t
3741 1.49 degroote key_portfromsaddr(const union sockaddr_union *saddr)
3742 1.48 degroote {
3743 1.48 degroote u_int16_t port;
3744 1.48 degroote
3745 1.48 degroote switch (saddr->sa.sa_family) {
3746 1.48 degroote case AF_INET: {
3747 1.48 degroote port = saddr->sin.sin_port;
3748 1.48 degroote break;
3749 1.48 degroote }
3750 1.48 degroote #ifdef INET6
3751 1.48 degroote case AF_INET6: {
3752 1.48 degroote port = saddr->sin6.sin6_port;
3753 1.48 degroote break;
3754 1.48 degroote }
3755 1.48 degroote #endif
3756 1.48 degroote default:
3757 1.48 degroote printf("key_portfromsaddr: unexpected address family\n");
3758 1.48 degroote port = 0;
3759 1.48 degroote break;
3760 1.48 degroote }
3761 1.48 degroote
3762 1.48 degroote return port;
3763 1.48 degroote }
3764 1.48 degroote
3765 1.48 degroote #endif /* IPSEC_NAT_T */
3766 1.48 degroote
3767 1.48 degroote /*
3768 1.48 degroote * Set port is struct sockaddr. port is in network order
3769 1.48 degroote */
3770 1.48 degroote static void
3771 1.49 degroote key_porttosaddr(union sockaddr_union *saddr, u_int16_t port)
3772 1.48 degroote {
3773 1.48 degroote switch (saddr->sa.sa_family) {
3774 1.48 degroote case AF_INET: {
3775 1.48 degroote saddr->sin.sin_port = port;
3776 1.48 degroote break;
3777 1.48 degroote }
3778 1.48 degroote #ifdef INET6
3779 1.48 degroote case AF_INET6: {
3780 1.48 degroote saddr->sin6.sin6_port = port;
3781 1.48 degroote break;
3782 1.48 degroote }
3783 1.48 degroote #endif
3784 1.48 degroote default:
3785 1.48 degroote printf("key_porttosaddr: unexpected address family %d\n",
3786 1.48 degroote saddr->sa.sa_family);
3787 1.48 degroote break;
3788 1.48 degroote }
3789 1.48 degroote
3790 1.48 degroote return;
3791 1.48 degroote }
3792 1.48 degroote
3793 1.48 degroote /*
3794 1.48 degroote * Safety check sa_len
3795 1.48 degroote */
3796 1.48 degroote static int
3797 1.49 degroote key_checksalen(const union sockaddr_union *saddr)
3798 1.48 degroote {
3799 1.48 degroote switch (saddr->sa.sa_family) {
3800 1.48 degroote case AF_INET:
3801 1.48 degroote if (saddr->sa.sa_len != sizeof(struct sockaddr_in))
3802 1.48 degroote return -1;
3803 1.48 degroote break;
3804 1.48 degroote #ifdef INET6
3805 1.48 degroote case AF_INET6:
3806 1.48 degroote if (saddr->sa.sa_len != sizeof(struct sockaddr_in6))
3807 1.48 degroote return -1;
3808 1.48 degroote break;
3809 1.48 degroote #endif
3810 1.48 degroote default:
3811 1.48 degroote printf("key_checksalen: unexpected sa_family %d\n",
3812 1.48 degroote saddr->sa.sa_family);
3813 1.48 degroote return -1;
3814 1.48 degroote break;
3815 1.48 degroote }
3816 1.48 degroote return 0;
3817 1.48 degroote }
3818 1.48 degroote
3819 1.48 degroote
3820 1.1 jonathan /*
3821 1.1 jonathan * set data into sadb_msg.
3822 1.1 jonathan */
3823 1.1 jonathan static struct mbuf *
3824 1.49 degroote key_setsadbmsg(u_int8_t type, u_int16_t tlen, u_int8_t satype,
3825 1.49 degroote u_int32_t seq, pid_t pid, u_int16_t reserved)
3826 1.1 jonathan {
3827 1.1 jonathan struct mbuf *m;
3828 1.1 jonathan struct sadb_msg *p;
3829 1.1 jonathan int len;
3830 1.1 jonathan
3831 1.1 jonathan len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
3832 1.1 jonathan if (len > MCLBYTES)
3833 1.1 jonathan return NULL;
3834 1.1 jonathan MGETHDR(m, M_DONTWAIT, MT_DATA);
3835 1.1 jonathan if (m && len > MHLEN) {
3836 1.1 jonathan MCLGET(m, M_DONTWAIT);
3837 1.1 jonathan if ((m->m_flags & M_EXT) == 0) {
3838 1.1 jonathan m_freem(m);
3839 1.1 jonathan m = NULL;
3840 1.1 jonathan }
3841 1.1 jonathan }
3842 1.1 jonathan if (!m)
3843 1.1 jonathan return NULL;
3844 1.1 jonathan m->m_pkthdr.len = m->m_len = len;
3845 1.1 jonathan m->m_next = NULL;
3846 1.1 jonathan
3847 1.1 jonathan p = mtod(m, struct sadb_msg *);
3848 1.1 jonathan
3849 1.49 degroote memset(p, 0, len);
3850 1.1 jonathan p->sadb_msg_version = PF_KEY_V2;
3851 1.1 jonathan p->sadb_msg_type = type;
3852 1.1 jonathan p->sadb_msg_errno = 0;
3853 1.1 jonathan p->sadb_msg_satype = satype;
3854 1.1 jonathan p->sadb_msg_len = PFKEY_UNIT64(tlen);
3855 1.1 jonathan p->sadb_msg_reserved = reserved;
3856 1.1 jonathan p->sadb_msg_seq = seq;
3857 1.1 jonathan p->sadb_msg_pid = (u_int32_t)pid;
3858 1.1 jonathan
3859 1.1 jonathan return m;
3860 1.1 jonathan }
3861 1.1 jonathan
3862 1.1 jonathan /*
3863 1.1 jonathan * copy secasvar data into sadb_address.
3864 1.1 jonathan */
3865 1.1 jonathan static struct mbuf *
3866 1.49 degroote key_setsadbsa(struct secasvar *sav)
3867 1.1 jonathan {
3868 1.1 jonathan struct mbuf *m;
3869 1.1 jonathan struct sadb_sa *p;
3870 1.1 jonathan int len;
3871 1.1 jonathan
3872 1.1 jonathan len = PFKEY_ALIGN8(sizeof(struct sadb_sa));
3873 1.1 jonathan m = key_alloc_mbuf(len);
3874 1.1 jonathan if (!m || m->m_next) { /*XXX*/
3875 1.1 jonathan if (m)
3876 1.1 jonathan m_freem(m);
3877 1.1 jonathan return NULL;
3878 1.1 jonathan }
3879 1.1 jonathan
3880 1.1 jonathan p = mtod(m, struct sadb_sa *);
3881 1.1 jonathan
3882 1.49 degroote memset(p, 0, len);
3883 1.1 jonathan p->sadb_sa_len = PFKEY_UNIT64(len);
3884 1.1 jonathan p->sadb_sa_exttype = SADB_EXT_SA;
3885 1.1 jonathan p->sadb_sa_spi = sav->spi;
3886 1.1 jonathan p->sadb_sa_replay = (sav->replay != NULL ? sav->replay->wsize : 0);
3887 1.1 jonathan p->sadb_sa_state = sav->state;
3888 1.1 jonathan p->sadb_sa_auth = sav->alg_auth;
3889 1.1 jonathan p->sadb_sa_encrypt = sav->alg_enc;
3890 1.1 jonathan p->sadb_sa_flags = sav->flags;
3891 1.1 jonathan
3892 1.1 jonathan return m;
3893 1.1 jonathan }
3894 1.1 jonathan
3895 1.1 jonathan /*
3896 1.1 jonathan * set data into sadb_address.
3897 1.1 jonathan */
3898 1.1 jonathan static struct mbuf *
3899 1.49 degroote key_setsadbaddr(u_int16_t exttype, const struct sockaddr *saddr,
3900 1.49 degroote u_int8_t prefixlen, u_int16_t ul_proto)
3901 1.1 jonathan {
3902 1.1 jonathan struct mbuf *m;
3903 1.1 jonathan struct sadb_address *p;
3904 1.1 jonathan size_t len;
3905 1.1 jonathan
3906 1.1 jonathan len = PFKEY_ALIGN8(sizeof(struct sadb_address)) +
3907 1.1 jonathan PFKEY_ALIGN8(saddr->sa_len);
3908 1.1 jonathan m = key_alloc_mbuf(len);
3909 1.1 jonathan if (!m || m->m_next) { /*XXX*/
3910 1.1 jonathan if (m)
3911 1.1 jonathan m_freem(m);
3912 1.1 jonathan return NULL;
3913 1.1 jonathan }
3914 1.1 jonathan
3915 1.1 jonathan p = mtod(m, struct sadb_address *);
3916 1.1 jonathan
3917 1.49 degroote memset(p, 0, len);
3918 1.1 jonathan p->sadb_address_len = PFKEY_UNIT64(len);
3919 1.1 jonathan p->sadb_address_exttype = exttype;
3920 1.1 jonathan p->sadb_address_proto = ul_proto;
3921 1.1 jonathan if (prefixlen == FULLMASK) {
3922 1.1 jonathan switch (saddr->sa_family) {
3923 1.1 jonathan case AF_INET:
3924 1.1 jonathan prefixlen = sizeof(struct in_addr) << 3;
3925 1.1 jonathan break;
3926 1.1 jonathan case AF_INET6:
3927 1.1 jonathan prefixlen = sizeof(struct in6_addr) << 3;
3928 1.1 jonathan break;
3929 1.1 jonathan default:
3930 1.1 jonathan ; /*XXX*/
3931 1.1 jonathan }
3932 1.1 jonathan }
3933 1.1 jonathan p->sadb_address_prefixlen = prefixlen;
3934 1.1 jonathan p->sadb_address_reserved = 0;
3935 1.1 jonathan
3936 1.49 degroote memcpy(mtod(m, char *) + PFKEY_ALIGN8(sizeof(struct sadb_address)),
3937 1.49 degroote saddr, saddr->sa_len);
3938 1.1 jonathan
3939 1.1 jonathan return m;
3940 1.1 jonathan }
3941 1.1 jonathan
3942 1.1 jonathan #if 0
3943 1.1 jonathan /*
3944 1.1 jonathan * set data into sadb_ident.
3945 1.1 jonathan */
3946 1.1 jonathan static struct mbuf *
3947 1.49 degroote key_setsadbident(u_int16_t exttype, u_int16_t idtype,
3948 1.49 degroote void *string, int stringlen, u_int64_t id)
3949 1.1 jonathan {
3950 1.1 jonathan struct mbuf *m;
3951 1.1 jonathan struct sadb_ident *p;
3952 1.1 jonathan size_t len;
3953 1.1 jonathan
3954 1.1 jonathan len = PFKEY_ALIGN8(sizeof(struct sadb_ident)) + PFKEY_ALIGN8(stringlen);
3955 1.1 jonathan m = key_alloc_mbuf(len);
3956 1.1 jonathan if (!m || m->m_next) { /*XXX*/
3957 1.1 jonathan if (m)
3958 1.1 jonathan m_freem(m);
3959 1.1 jonathan return NULL;
3960 1.1 jonathan }
3961 1.1 jonathan
3962 1.1 jonathan p = mtod(m, struct sadb_ident *);
3963 1.1 jonathan
3964 1.49 degroote memset(p, 0, len);
3965 1.1 jonathan p->sadb_ident_len = PFKEY_UNIT64(len);
3966 1.1 jonathan p->sadb_ident_exttype = exttype;
3967 1.1 jonathan p->sadb_ident_type = idtype;
3968 1.1 jonathan p->sadb_ident_reserved = 0;
3969 1.1 jonathan p->sadb_ident_id = id;
3970 1.1 jonathan
3971 1.49 degroote memcpy(mtod(m, void *) + PFKEY_ALIGN8(sizeof(struct sadb_ident)),
3972 1.49 degroote string, stringlen);
3973 1.1 jonathan
3974 1.1 jonathan return m;
3975 1.1 jonathan }
3976 1.1 jonathan #endif
3977 1.1 jonathan
3978 1.1 jonathan /*
3979 1.1 jonathan * set data into sadb_x_sa2.
3980 1.1 jonathan */
3981 1.1 jonathan static struct mbuf *
3982 1.49 degroote key_setsadbxsa2(u_int8_t mode, u_int32_t seq, u_int16_t reqid)
3983 1.1 jonathan {
3984 1.1 jonathan struct mbuf *m;
3985 1.1 jonathan struct sadb_x_sa2 *p;
3986 1.1 jonathan size_t len;
3987 1.1 jonathan
3988 1.1 jonathan len = PFKEY_ALIGN8(sizeof(struct sadb_x_sa2));
3989 1.1 jonathan m = key_alloc_mbuf(len);
3990 1.1 jonathan if (!m || m->m_next) { /*XXX*/
3991 1.1 jonathan if (m)
3992 1.1 jonathan m_freem(m);
3993 1.1 jonathan return NULL;
3994 1.1 jonathan }
3995 1.1 jonathan
3996 1.1 jonathan p = mtod(m, struct sadb_x_sa2 *);
3997 1.1 jonathan
3998 1.49 degroote memset(p, 0, len);
3999 1.1 jonathan p->sadb_x_sa2_len = PFKEY_UNIT64(len);
4000 1.1 jonathan p->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
4001 1.1 jonathan p->sadb_x_sa2_mode = mode;
4002 1.1 jonathan p->sadb_x_sa2_reserved1 = 0;
4003 1.1 jonathan p->sadb_x_sa2_reserved2 = 0;
4004 1.1 jonathan p->sadb_x_sa2_sequence = seq;
4005 1.1 jonathan p->sadb_x_sa2_reqid = reqid;
4006 1.1 jonathan
4007 1.1 jonathan return m;
4008 1.1 jonathan }
4009 1.1 jonathan
4010 1.1 jonathan /*
4011 1.1 jonathan * set data into sadb_x_policy
4012 1.1 jonathan */
4013 1.1 jonathan static struct mbuf *
4014 1.49 degroote key_setsadbxpolicy(u_int16_t type, u_int8_t dir, u_int32_t id)
4015 1.1 jonathan {
4016 1.1 jonathan struct mbuf *m;
4017 1.1 jonathan struct sadb_x_policy *p;
4018 1.1 jonathan size_t len;
4019 1.1 jonathan
4020 1.1 jonathan len = PFKEY_ALIGN8(sizeof(struct sadb_x_policy));
4021 1.1 jonathan m = key_alloc_mbuf(len);
4022 1.1 jonathan if (!m || m->m_next) { /*XXX*/
4023 1.1 jonathan if (m)
4024 1.1 jonathan m_freem(m);
4025 1.1 jonathan return NULL;
4026 1.1 jonathan }
4027 1.1 jonathan
4028 1.1 jonathan p = mtod(m, struct sadb_x_policy *);
4029 1.1 jonathan
4030 1.49 degroote memset(p, 0, len);
4031 1.1 jonathan p->sadb_x_policy_len = PFKEY_UNIT64(len);
4032 1.1 jonathan p->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
4033 1.1 jonathan p->sadb_x_policy_type = type;
4034 1.1 jonathan p->sadb_x_policy_dir = dir;
4035 1.1 jonathan p->sadb_x_policy_id = id;
4036 1.1 jonathan
4037 1.1 jonathan return m;
4038 1.1 jonathan }
4039 1.1 jonathan
4040 1.1 jonathan /* %%% utilities */
4041 1.1 jonathan /*
4042 1.1 jonathan * copy a buffer into the new buffer allocated.
4043 1.1 jonathan */
4044 1.1 jonathan static void *
4045 1.49 degroote key_newbuf(const void *src, u_int len)
4046 1.1 jonathan {
4047 1.38 christos void *new;
4048 1.1 jonathan
4049 1.38 christos KMALLOC(new, void *, len);
4050 1.1 jonathan if (new == NULL) {
4051 1.1 jonathan ipseclog((LOG_DEBUG, "key_newbuf: No more memory.\n"));
4052 1.1 jonathan return NULL;
4053 1.1 jonathan }
4054 1.49 degroote memcpy(new, src, len);
4055 1.1 jonathan
4056 1.1 jonathan return new;
4057 1.1 jonathan }
4058 1.1 jonathan
4059 1.1 jonathan /* compare my own address
4060 1.1 jonathan * OUT: 1: true, i.e. my address.
4061 1.1 jonathan * 0: false
4062 1.1 jonathan */
4063 1.1 jonathan int
4064 1.49 degroote key_ismyaddr(struct sockaddr *sa)
4065 1.1 jonathan {
4066 1.1 jonathan #ifdef INET
4067 1.1 jonathan struct sockaddr_in *sin;
4068 1.1 jonathan struct in_ifaddr *ia;
4069 1.1 jonathan #endif
4070 1.1 jonathan
4071 1.1 jonathan /* sanity check */
4072 1.1 jonathan if (sa == NULL)
4073 1.24 christos panic("key_ismyaddr: NULL pointer is passed");
4074 1.1 jonathan
4075 1.1 jonathan switch (sa->sa_family) {
4076 1.1 jonathan #ifdef INET
4077 1.1 jonathan case AF_INET:
4078 1.1 jonathan sin = (struct sockaddr_in *)sa;
4079 1.1 jonathan for (ia = in_ifaddrhead.tqh_first; ia;
4080 1.1 jonathan ia = ia->ia_link.tqe_next)
4081 1.1 jonathan {
4082 1.1 jonathan if (sin->sin_family == ia->ia_addr.sin_family &&
4083 1.1 jonathan sin->sin_len == ia->ia_addr.sin_len &&
4084 1.1 jonathan sin->sin_addr.s_addr == ia->ia_addr.sin_addr.s_addr)
4085 1.1 jonathan {
4086 1.1 jonathan return 1;
4087 1.1 jonathan }
4088 1.1 jonathan }
4089 1.1 jonathan break;
4090 1.1 jonathan #endif
4091 1.1 jonathan #ifdef INET6
4092 1.1 jonathan case AF_INET6:
4093 1.1 jonathan return key_ismyaddr6((struct sockaddr_in6 *)sa);
4094 1.1 jonathan #endif
4095 1.1 jonathan }
4096 1.1 jonathan
4097 1.1 jonathan return 0;
4098 1.1 jonathan }
4099 1.1 jonathan
4100 1.1 jonathan #ifdef INET6
4101 1.1 jonathan /*
4102 1.1 jonathan * compare my own address for IPv6.
4103 1.1 jonathan * 1: ours
4104 1.1 jonathan * 0: other
4105 1.1 jonathan * NOTE: derived ip6_input() in KAME. This is necessary to modify more.
4106 1.1 jonathan */
4107 1.1 jonathan #include <netinet6/in6_var.h>
4108 1.1 jonathan
4109 1.1 jonathan static int
4110 1.49 degroote key_ismyaddr6(struct sockaddr_in6 *sin6)
4111 1.1 jonathan {
4112 1.1 jonathan struct in6_ifaddr *ia;
4113 1.1 jonathan struct in6_multi *in6m;
4114 1.1 jonathan
4115 1.1 jonathan for (ia = in6_ifaddr; ia; ia = ia->ia_next) {
4116 1.1 jonathan if (key_sockaddrcmp((struct sockaddr *)&sin6,
4117 1.1 jonathan (struct sockaddr *)&ia->ia_addr, 0) == 0)
4118 1.1 jonathan return 1;
4119 1.1 jonathan
4120 1.1 jonathan /*
4121 1.1 jonathan * XXX Multicast
4122 1.1 jonathan * XXX why do we care about multlicast here while we don't care
4123 1.1 jonathan * about IPv4 multicast??
4124 1.1 jonathan * XXX scope
4125 1.1 jonathan */
4126 1.1 jonathan in6m = NULL;
4127 1.10 jonathan #ifdef __FreeBSD__
4128 1.1 jonathan IN6_LOOKUP_MULTI(sin6->sin6_addr, ia->ia_ifp, in6m);
4129 1.10 jonathan #else
4130 1.10 jonathan for ((in6m) = ia->ia6_multiaddrs.lh_first;
4131 1.10 jonathan (in6m) != NULL &&
4132 1.10 jonathan !IN6_ARE_ADDR_EQUAL(&(in6m)->in6m_addr, &sin6->sin6_addr);
4133 1.10 jonathan (in6m) = in6m->in6m_entry.le_next)
4134 1.10 jonathan continue;
4135 1.10 jonathan #endif
4136 1.1 jonathan if (in6m)
4137 1.1 jonathan return 1;
4138 1.1 jonathan }
4139 1.1 jonathan
4140 1.1 jonathan /* loopback, just for safety */
4141 1.1 jonathan if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))
4142 1.1 jonathan return 1;
4143 1.1 jonathan
4144 1.1 jonathan return 0;
4145 1.1 jonathan }
4146 1.1 jonathan #endif /*INET6*/
4147 1.1 jonathan
4148 1.1 jonathan /*
4149 1.1 jonathan * compare two secasindex structure.
4150 1.1 jonathan * flag can specify to compare 2 saidxes.
4151 1.1 jonathan * compare two secasindex structure without both mode and reqid.
4152 1.1 jonathan * don't compare port.
4153 1.22 perry * IN:
4154 1.1 jonathan * saidx0: source, it can be in SAD.
4155 1.1 jonathan * saidx1: object.
4156 1.22 perry * OUT:
4157 1.1 jonathan * 1 : equal
4158 1.1 jonathan * 0 : not equal
4159 1.1 jonathan */
4160 1.1 jonathan static int
4161 1.1 jonathan key_cmpsaidx(
4162 1.1 jonathan const struct secasindex *saidx0,
4163 1.1 jonathan const struct secasindex *saidx1,
4164 1.1 jonathan int flag)
4165 1.1 jonathan {
4166 1.48 degroote int chkport = 0;
4167 1.48 degroote
4168 1.1 jonathan /* sanity */
4169 1.1 jonathan if (saidx0 == NULL && saidx1 == NULL)
4170 1.1 jonathan return 1;
4171 1.1 jonathan
4172 1.1 jonathan if (saidx0 == NULL || saidx1 == NULL)
4173 1.1 jonathan return 0;
4174 1.1 jonathan
4175 1.1 jonathan if (saidx0->proto != saidx1->proto)
4176 1.1 jonathan return 0;
4177 1.1 jonathan
4178 1.1 jonathan if (flag == CMP_EXACTLY) {
4179 1.1 jonathan if (saidx0->mode != saidx1->mode)
4180 1.1 jonathan return 0;
4181 1.1 jonathan if (saidx0->reqid != saidx1->reqid)
4182 1.1 jonathan return 0;
4183 1.49 degroote if (memcmp(&saidx0->src, &saidx1->src, saidx0->src.sa.sa_len) != 0 ||
4184 1.49 degroote memcmp(&saidx0->dst, &saidx1->dst, saidx0->dst.sa.sa_len) != 0)
4185 1.1 jonathan return 0;
4186 1.1 jonathan } else {
4187 1.1 jonathan
4188 1.1 jonathan /* CMP_MODE_REQID, CMP_REQID, CMP_HEAD */
4189 1.1 jonathan if (flag == CMP_MODE_REQID
4190 1.1 jonathan ||flag == CMP_REQID) {
4191 1.1 jonathan /*
4192 1.1 jonathan * If reqid of SPD is non-zero, unique SA is required.
4193 1.1 jonathan * The result must be of same reqid in this case.
4194 1.1 jonathan */
4195 1.1 jonathan if (saidx1->reqid != 0 && saidx0->reqid != saidx1->reqid)
4196 1.1 jonathan return 0;
4197 1.1 jonathan }
4198 1.1 jonathan
4199 1.1 jonathan if (flag == CMP_MODE_REQID) {
4200 1.1 jonathan if (saidx0->mode != IPSEC_MODE_ANY
4201 1.1 jonathan && saidx0->mode != saidx1->mode)
4202 1.1 jonathan return 0;
4203 1.1 jonathan }
4204 1.1 jonathan
4205 1.48 degroote /*
4206 1.48 degroote * If NAT-T is enabled, check ports for tunnel mode.
4207 1.48 degroote * Don't do it for transport mode, as there is no
4208 1.48 degroote * port information available in the SP.
4209 1.48 degroote */
4210 1.48 degroote #ifdef IPSEC_NAT_T
4211 1.48 degroote if (saidx1->mode == IPSEC_MODE_TUNNEL)
4212 1.48 degroote chkport = 1;
4213 1.48 degroote #endif
4214 1.48 degroote
4215 1.48 degroote if (key_sockaddrcmp(&saidx0->src.sa, &saidx1->src.sa, chkport) != 0) {
4216 1.1 jonathan return 0;
4217 1.1 jonathan }
4218 1.48 degroote if (key_sockaddrcmp(&saidx0->dst.sa, &saidx1->dst.sa, chkport) != 0) {
4219 1.1 jonathan return 0;
4220 1.1 jonathan }
4221 1.1 jonathan }
4222 1.1 jonathan
4223 1.1 jonathan return 1;
4224 1.1 jonathan }
4225 1.1 jonathan
4226 1.1 jonathan /*
4227 1.1 jonathan * compare two secindex structure exactly.
4228 1.1 jonathan * IN:
4229 1.1 jonathan * spidx0: source, it is often in SPD.
4230 1.1 jonathan * spidx1: object, it is often from PFKEY message.
4231 1.1 jonathan * OUT:
4232 1.1 jonathan * 1 : equal
4233 1.1 jonathan * 0 : not equal
4234 1.1 jonathan */
4235 1.9 thorpej int
4236 1.1 jonathan key_cmpspidx_exactly(
4237 1.1 jonathan struct secpolicyindex *spidx0,
4238 1.1 jonathan struct secpolicyindex *spidx1)
4239 1.1 jonathan {
4240 1.1 jonathan /* sanity */
4241 1.1 jonathan if (spidx0 == NULL && spidx1 == NULL)
4242 1.1 jonathan return 1;
4243 1.1 jonathan
4244 1.1 jonathan if (spidx0 == NULL || spidx1 == NULL)
4245 1.1 jonathan return 0;
4246 1.1 jonathan
4247 1.1 jonathan if (spidx0->prefs != spidx1->prefs
4248 1.1 jonathan || spidx0->prefd != spidx1->prefd
4249 1.1 jonathan || spidx0->ul_proto != spidx1->ul_proto)
4250 1.1 jonathan return 0;
4251 1.1 jonathan
4252 1.1 jonathan return key_sockaddrcmp(&spidx0->src.sa, &spidx1->src.sa, 1) == 0 &&
4253 1.1 jonathan key_sockaddrcmp(&spidx0->dst.sa, &spidx1->dst.sa, 1) == 0;
4254 1.1 jonathan }
4255 1.1 jonathan
4256 1.1 jonathan /*
4257 1.1 jonathan * compare two secindex structure with mask.
4258 1.1 jonathan * IN:
4259 1.1 jonathan * spidx0: source, it is often in SPD.
4260 1.1 jonathan * spidx1: object, it is often from IP header.
4261 1.1 jonathan * OUT:
4262 1.1 jonathan * 1 : equal
4263 1.1 jonathan * 0 : not equal
4264 1.1 jonathan */
4265 1.9 thorpej int
4266 1.1 jonathan key_cmpspidx_withmask(
4267 1.1 jonathan struct secpolicyindex *spidx0,
4268 1.1 jonathan struct secpolicyindex *spidx1)
4269 1.1 jonathan {
4270 1.1 jonathan /* sanity */
4271 1.1 jonathan if (spidx0 == NULL && spidx1 == NULL)
4272 1.1 jonathan return 1;
4273 1.1 jonathan
4274 1.1 jonathan if (spidx0 == NULL || spidx1 == NULL)
4275 1.1 jonathan return 0;
4276 1.1 jonathan
4277 1.1 jonathan if (spidx0->src.sa.sa_family != spidx1->src.sa.sa_family ||
4278 1.1 jonathan spidx0->dst.sa.sa_family != spidx1->dst.sa.sa_family ||
4279 1.1 jonathan spidx0->src.sa.sa_len != spidx1->src.sa.sa_len ||
4280 1.1 jonathan spidx0->dst.sa.sa_len != spidx1->dst.sa.sa_len)
4281 1.1 jonathan return 0;
4282 1.1 jonathan
4283 1.1 jonathan /* if spidx.ul_proto == IPSEC_ULPROTO_ANY, ignore. */
4284 1.1 jonathan if (spidx0->ul_proto != (u_int16_t)IPSEC_ULPROTO_ANY
4285 1.1 jonathan && spidx0->ul_proto != spidx1->ul_proto)
4286 1.1 jonathan return 0;
4287 1.1 jonathan
4288 1.1 jonathan switch (spidx0->src.sa.sa_family) {
4289 1.1 jonathan case AF_INET:
4290 1.1 jonathan if (spidx0->src.sin.sin_port != IPSEC_PORT_ANY
4291 1.1 jonathan && spidx0->src.sin.sin_port != spidx1->src.sin.sin_port)
4292 1.1 jonathan return 0;
4293 1.1 jonathan if (!key_bbcmp(&spidx0->src.sin.sin_addr,
4294 1.1 jonathan &spidx1->src.sin.sin_addr, spidx0->prefs))
4295 1.1 jonathan return 0;
4296 1.1 jonathan break;
4297 1.1 jonathan case AF_INET6:
4298 1.1 jonathan if (spidx0->src.sin6.sin6_port != IPSEC_PORT_ANY
4299 1.1 jonathan && spidx0->src.sin6.sin6_port != spidx1->src.sin6.sin6_port)
4300 1.1 jonathan return 0;
4301 1.1 jonathan /*
4302 1.1 jonathan * scope_id check. if sin6_scope_id is 0, we regard it
4303 1.22 perry * as a wildcard scope, which matches any scope zone ID.
4304 1.1 jonathan */
4305 1.1 jonathan if (spidx0->src.sin6.sin6_scope_id &&
4306 1.1 jonathan spidx1->src.sin6.sin6_scope_id &&
4307 1.1 jonathan spidx0->src.sin6.sin6_scope_id != spidx1->src.sin6.sin6_scope_id)
4308 1.1 jonathan return 0;
4309 1.1 jonathan if (!key_bbcmp(&spidx0->src.sin6.sin6_addr,
4310 1.1 jonathan &spidx1->src.sin6.sin6_addr, spidx0->prefs))
4311 1.1 jonathan return 0;
4312 1.1 jonathan break;
4313 1.1 jonathan default:
4314 1.1 jonathan /* XXX */
4315 1.49 degroote if (memcmp(&spidx0->src, &spidx1->src, spidx0->src.sa.sa_len) != 0)
4316 1.1 jonathan return 0;
4317 1.1 jonathan break;
4318 1.1 jonathan }
4319 1.1 jonathan
4320 1.1 jonathan switch (spidx0->dst.sa.sa_family) {
4321 1.1 jonathan case AF_INET:
4322 1.1 jonathan if (spidx0->dst.sin.sin_port != IPSEC_PORT_ANY
4323 1.1 jonathan && spidx0->dst.sin.sin_port != spidx1->dst.sin.sin_port)
4324 1.1 jonathan return 0;
4325 1.1 jonathan if (!key_bbcmp(&spidx0->dst.sin.sin_addr,
4326 1.1 jonathan &spidx1->dst.sin.sin_addr, spidx0->prefd))
4327 1.1 jonathan return 0;
4328 1.1 jonathan break;
4329 1.1 jonathan case AF_INET6:
4330 1.1 jonathan if (spidx0->dst.sin6.sin6_port != IPSEC_PORT_ANY
4331 1.1 jonathan && spidx0->dst.sin6.sin6_port != spidx1->dst.sin6.sin6_port)
4332 1.1 jonathan return 0;
4333 1.1 jonathan /*
4334 1.1 jonathan * scope_id check. if sin6_scope_id is 0, we regard it
4335 1.22 perry * as a wildcard scope, which matches any scope zone ID.
4336 1.1 jonathan */
4337 1.1 jonathan if (spidx0->src.sin6.sin6_scope_id &&
4338 1.1 jonathan spidx1->src.sin6.sin6_scope_id &&
4339 1.1 jonathan spidx0->dst.sin6.sin6_scope_id != spidx1->dst.sin6.sin6_scope_id)
4340 1.1 jonathan return 0;
4341 1.1 jonathan if (!key_bbcmp(&spidx0->dst.sin6.sin6_addr,
4342 1.1 jonathan &spidx1->dst.sin6.sin6_addr, spidx0->prefd))
4343 1.1 jonathan return 0;
4344 1.1 jonathan break;
4345 1.1 jonathan default:
4346 1.1 jonathan /* XXX */
4347 1.49 degroote if (memcmp(&spidx0->dst, &spidx1->dst, spidx0->dst.sa.sa_len) != 0)
4348 1.1 jonathan return 0;
4349 1.1 jonathan break;
4350 1.1 jonathan }
4351 1.1 jonathan
4352 1.1 jonathan /* XXX Do we check other field ? e.g. flowinfo */
4353 1.1 jonathan
4354 1.1 jonathan return 1;
4355 1.1 jonathan }
4356 1.1 jonathan
4357 1.1 jonathan /* returns 0 on match */
4358 1.1 jonathan static int
4359 1.1 jonathan key_sockaddrcmp(
4360 1.1 jonathan const struct sockaddr *sa1,
4361 1.1 jonathan const struct sockaddr *sa2,
4362 1.1 jonathan int port)
4363 1.1 jonathan {
4364 1.1 jonathan #ifdef satosin
4365 1.1 jonathan #undef satosin
4366 1.1 jonathan #endif
4367 1.1 jonathan #define satosin(s) ((const struct sockaddr_in *)s)
4368 1.1 jonathan #ifdef satosin6
4369 1.1 jonathan #undef satosin6
4370 1.1 jonathan #endif
4371 1.1 jonathan #define satosin6(s) ((const struct sockaddr_in6 *)s)
4372 1.1 jonathan if (sa1->sa_family != sa2->sa_family || sa1->sa_len != sa2->sa_len)
4373 1.1 jonathan return 1;
4374 1.1 jonathan
4375 1.1 jonathan switch (sa1->sa_family) {
4376 1.1 jonathan case AF_INET:
4377 1.1 jonathan if (sa1->sa_len != sizeof(struct sockaddr_in))
4378 1.1 jonathan return 1;
4379 1.1 jonathan if (satosin(sa1)->sin_addr.s_addr !=
4380 1.1 jonathan satosin(sa2)->sin_addr.s_addr) {
4381 1.1 jonathan return 1;
4382 1.1 jonathan }
4383 1.1 jonathan if (port && satosin(sa1)->sin_port != satosin(sa2)->sin_port)
4384 1.1 jonathan return 1;
4385 1.1 jonathan break;
4386 1.1 jonathan case AF_INET6:
4387 1.1 jonathan if (sa1->sa_len != sizeof(struct sockaddr_in6))
4388 1.1 jonathan return 1; /*EINVAL*/
4389 1.1 jonathan if (satosin6(sa1)->sin6_scope_id !=
4390 1.1 jonathan satosin6(sa2)->sin6_scope_id) {
4391 1.1 jonathan return 1;
4392 1.1 jonathan }
4393 1.1 jonathan if (!IN6_ARE_ADDR_EQUAL(&satosin6(sa1)->sin6_addr,
4394 1.1 jonathan &satosin6(sa2)->sin6_addr)) {
4395 1.1 jonathan return 1;
4396 1.1 jonathan }
4397 1.1 jonathan if (port &&
4398 1.1 jonathan satosin6(sa1)->sin6_port != satosin6(sa2)->sin6_port) {
4399 1.1 jonathan return 1;
4400 1.1 jonathan }
4401 1.35 degroote break;
4402 1.1 jonathan default:
4403 1.1 jonathan if (bcmp(sa1, sa2, sa1->sa_len) != 0)
4404 1.1 jonathan return 1;
4405 1.1 jonathan break;
4406 1.1 jonathan }
4407 1.1 jonathan
4408 1.1 jonathan return 0;
4409 1.1 jonathan #undef satosin
4410 1.1 jonathan #undef satosin6
4411 1.1 jonathan }
4412 1.1 jonathan
4413 1.1 jonathan /*
4414 1.1 jonathan * compare two buffers with mask.
4415 1.1 jonathan * IN:
4416 1.1 jonathan * addr1: source
4417 1.1 jonathan * addr2: object
4418 1.1 jonathan * bits: Number of bits to compare
4419 1.1 jonathan * OUT:
4420 1.1 jonathan * 1 : equal
4421 1.1 jonathan * 0 : not equal
4422 1.1 jonathan */
4423 1.1 jonathan static int
4424 1.1 jonathan key_bbcmp(const void *a1, const void *a2, u_int bits)
4425 1.1 jonathan {
4426 1.1 jonathan const unsigned char *p1 = a1;
4427 1.1 jonathan const unsigned char *p2 = a2;
4428 1.1 jonathan
4429 1.1 jonathan /* XXX: This could be considerably faster if we compare a word
4430 1.1 jonathan * at a time, but it is complicated on LSB Endian machines */
4431 1.1 jonathan
4432 1.1 jonathan /* Handle null pointers */
4433 1.1 jonathan if (p1 == NULL || p2 == NULL)
4434 1.1 jonathan return (p1 == p2);
4435 1.1 jonathan
4436 1.1 jonathan while (bits >= 8) {
4437 1.1 jonathan if (*p1++ != *p2++)
4438 1.1 jonathan return 0;
4439 1.1 jonathan bits -= 8;
4440 1.1 jonathan }
4441 1.1 jonathan
4442 1.1 jonathan if (bits > 0) {
4443 1.1 jonathan u_int8_t mask = ~((1<<(8-bits))-1);
4444 1.1 jonathan if ((*p1 & mask) != (*p2 & mask))
4445 1.1 jonathan return 0;
4446 1.1 jonathan }
4447 1.1 jonathan return 1; /* Match! */
4448 1.1 jonathan }
4449 1.1 jonathan
4450 1.1 jonathan /*
4451 1.1 jonathan * time handler.
4452 1.1 jonathan * scanning SPD and SAD to check status for each entries,
4453 1.1 jonathan * and do to remove or to expire.
4454 1.53 ad * XXX2038: year 2038 problem may remain.
4455 1.1 jonathan */
4456 1.1 jonathan void
4457 1.30 christos key_timehandler(void* arg)
4458 1.1 jonathan {
4459 1.1 jonathan u_int dir;
4460 1.1 jonathan int s;
4461 1.1 jonathan time_t now = time_second;
4462 1.1 jonathan
4463 1.1 jonathan s = splsoftnet(); /*called from softclock()*/
4464 1.53 ad mutex_enter(softnet_lock);
4465 1.1 jonathan
4466 1.1 jonathan /* SPD */
4467 1.1 jonathan {
4468 1.1 jonathan struct secpolicy *sp, *nextsp;
4469 1.1 jonathan
4470 1.1 jonathan for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
4471 1.1 jonathan for (sp = LIST_FIRST(&sptree[dir]);
4472 1.1 jonathan sp != NULL;
4473 1.1 jonathan sp = nextsp) {
4474 1.1 jonathan
4475 1.1 jonathan nextsp = LIST_NEXT(sp, chain);
4476 1.1 jonathan
4477 1.1 jonathan if (sp->state == IPSEC_SPSTATE_DEAD) {
4478 1.18 jonathan key_sp_unlink(sp); /*XXX*/
4479 1.18 jonathan
4480 1.18 jonathan /* 'sp' dead; continue transfers to
4481 1.18 jonathan * 'sp = nextsp'
4482 1.18 jonathan */
4483 1.1 jonathan continue;
4484 1.1 jonathan }
4485 1.1 jonathan
4486 1.1 jonathan if (sp->lifetime == 0 && sp->validtime == 0)
4487 1.1 jonathan continue;
4488 1.1 jonathan
4489 1.1 jonathan /* the deletion will occur next time */
4490 1.1 jonathan if ((sp->lifetime && now - sp->created > sp->lifetime)
4491 1.1 jonathan || (sp->validtime && now - sp->lastused > sp->validtime)) {
4492 1.18 jonathan key_sp_dead(sp);
4493 1.1 jonathan key_spdexpire(sp);
4494 1.1 jonathan continue;
4495 1.1 jonathan }
4496 1.1 jonathan }
4497 1.1 jonathan }
4498 1.1 jonathan }
4499 1.1 jonathan
4500 1.1 jonathan /* SAD */
4501 1.1 jonathan {
4502 1.1 jonathan struct secashead *sah, *nextsah;
4503 1.1 jonathan struct secasvar *sav, *nextsav;
4504 1.1 jonathan
4505 1.1 jonathan for (sah = LIST_FIRST(&sahtree);
4506 1.1 jonathan sah != NULL;
4507 1.1 jonathan sah = nextsah) {
4508 1.1 jonathan
4509 1.1 jonathan nextsah = LIST_NEXT(sah, chain);
4510 1.1 jonathan
4511 1.1 jonathan /* if sah has been dead, then delete it and process next sah. */
4512 1.1 jonathan if (sah->state == SADB_SASTATE_DEAD) {
4513 1.1 jonathan key_delsah(sah);
4514 1.1 jonathan continue;
4515 1.1 jonathan }
4516 1.1 jonathan
4517 1.1 jonathan /* if LARVAL entry doesn't become MATURE, delete it. */
4518 1.1 jonathan for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_LARVAL]);
4519 1.1 jonathan sav != NULL;
4520 1.1 jonathan sav = nextsav) {
4521 1.1 jonathan
4522 1.1 jonathan nextsav = LIST_NEXT(sav, chain);
4523 1.1 jonathan
4524 1.1 jonathan if (now - sav->created > key_larval_lifetime) {
4525 1.1 jonathan KEY_FREESAV(&sav);
4526 1.1 jonathan }
4527 1.1 jonathan }
4528 1.1 jonathan
4529 1.1 jonathan /*
4530 1.1 jonathan * check MATURE entry to start to send expire message
4531 1.1 jonathan * whether or not.
4532 1.1 jonathan */
4533 1.1 jonathan for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_MATURE]);
4534 1.1 jonathan sav != NULL;
4535 1.1 jonathan sav = nextsav) {
4536 1.1 jonathan
4537 1.1 jonathan nextsav = LIST_NEXT(sav, chain);
4538 1.1 jonathan
4539 1.1 jonathan /* we don't need to check. */
4540 1.1 jonathan if (sav->lft_s == NULL)
4541 1.1 jonathan continue;
4542 1.1 jonathan
4543 1.1 jonathan /* sanity check */
4544 1.1 jonathan if (sav->lft_c == NULL) {
4545 1.1 jonathan ipseclog((LOG_DEBUG,"key_timehandler: "
4546 1.1 jonathan "There is no CURRENT time, why?\n"));
4547 1.1 jonathan continue;
4548 1.1 jonathan }
4549 1.1 jonathan
4550 1.1 jonathan /* check SOFT lifetime */
4551 1.1 jonathan if (sav->lft_s->sadb_lifetime_addtime != 0
4552 1.1 jonathan && now - sav->created > sav->lft_s->sadb_lifetime_addtime) {
4553 1.1 jonathan /*
4554 1.1 jonathan * check SA to be used whether or not.
4555 1.1 jonathan * when SA hasn't been used, delete it.
4556 1.1 jonathan */
4557 1.1 jonathan if (sav->lft_c->sadb_lifetime_usetime == 0) {
4558 1.1 jonathan key_sa_chgstate(sav, SADB_SASTATE_DEAD);
4559 1.1 jonathan KEY_FREESAV(&sav);
4560 1.1 jonathan } else {
4561 1.1 jonathan key_sa_chgstate(sav, SADB_SASTATE_DYING);
4562 1.1 jonathan /*
4563 1.1 jonathan * XXX If we keep to send expire
4564 1.1 jonathan * message in the status of
4565 1.1 jonathan * DYING. Do remove below code.
4566 1.1 jonathan */
4567 1.1 jonathan key_expire(sav);
4568 1.1 jonathan }
4569 1.1 jonathan }
4570 1.1 jonathan /* check SOFT lifetime by bytes */
4571 1.1 jonathan /*
4572 1.1 jonathan * XXX I don't know the way to delete this SA
4573 1.1 jonathan * when new SA is installed. Caution when it's
4574 1.1 jonathan * installed too big lifetime by time.
4575 1.1 jonathan */
4576 1.1 jonathan else if (sav->lft_s->sadb_lifetime_bytes != 0
4577 1.1 jonathan && sav->lft_s->sadb_lifetime_bytes < sav->lft_c->sadb_lifetime_bytes) {
4578 1.1 jonathan
4579 1.1 jonathan key_sa_chgstate(sav, SADB_SASTATE_DYING);
4580 1.1 jonathan /*
4581 1.1 jonathan * XXX If we keep to send expire
4582 1.1 jonathan * message in the status of
4583 1.1 jonathan * DYING. Do remove below code.
4584 1.1 jonathan */
4585 1.1 jonathan key_expire(sav);
4586 1.1 jonathan }
4587 1.1 jonathan }
4588 1.1 jonathan
4589 1.1 jonathan /* check DYING entry to change status to DEAD. */
4590 1.1 jonathan for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_DYING]);
4591 1.1 jonathan sav != NULL;
4592 1.1 jonathan sav = nextsav) {
4593 1.1 jonathan
4594 1.1 jonathan nextsav = LIST_NEXT(sav, chain);
4595 1.1 jonathan
4596 1.1 jonathan /* we don't need to check. */
4597 1.1 jonathan if (sav->lft_h == NULL)
4598 1.1 jonathan continue;
4599 1.1 jonathan
4600 1.1 jonathan /* sanity check */
4601 1.1 jonathan if (sav->lft_c == NULL) {
4602 1.1 jonathan ipseclog((LOG_DEBUG, "key_timehandler: "
4603 1.1 jonathan "There is no CURRENT time, why?\n"));
4604 1.1 jonathan continue;
4605 1.1 jonathan }
4606 1.1 jonathan
4607 1.1 jonathan if (sav->lft_h->sadb_lifetime_addtime != 0
4608 1.1 jonathan && now - sav->created > sav->lft_h->sadb_lifetime_addtime) {
4609 1.1 jonathan key_sa_chgstate(sav, SADB_SASTATE_DEAD);
4610 1.1 jonathan KEY_FREESAV(&sav);
4611 1.1 jonathan }
4612 1.1 jonathan #if 0 /* XXX Should we keep to send expire message until HARD lifetime ? */
4613 1.1 jonathan else if (sav->lft_s != NULL
4614 1.1 jonathan && sav->lft_s->sadb_lifetime_addtime != 0
4615 1.1 jonathan && now - sav->created > sav->lft_s->sadb_lifetime_addtime) {
4616 1.1 jonathan /*
4617 1.1 jonathan * XXX: should be checked to be
4618 1.1 jonathan * installed the valid SA.
4619 1.1 jonathan */
4620 1.1 jonathan
4621 1.1 jonathan /*
4622 1.1 jonathan * If there is no SA then sending
4623 1.1 jonathan * expire message.
4624 1.1 jonathan */
4625 1.1 jonathan key_expire(sav);
4626 1.1 jonathan }
4627 1.1 jonathan #endif
4628 1.1 jonathan /* check HARD lifetime by bytes */
4629 1.1 jonathan else if (sav->lft_h->sadb_lifetime_bytes != 0
4630 1.1 jonathan && sav->lft_h->sadb_lifetime_bytes < sav->lft_c->sadb_lifetime_bytes) {
4631 1.1 jonathan key_sa_chgstate(sav, SADB_SASTATE_DEAD);
4632 1.1 jonathan KEY_FREESAV(&sav);
4633 1.1 jonathan }
4634 1.1 jonathan }
4635 1.1 jonathan
4636 1.1 jonathan /* delete entry in DEAD */
4637 1.1 jonathan for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_DEAD]);
4638 1.1 jonathan sav != NULL;
4639 1.1 jonathan sav = nextsav) {
4640 1.1 jonathan
4641 1.1 jonathan nextsav = LIST_NEXT(sav, chain);
4642 1.1 jonathan
4643 1.1 jonathan /* sanity check */
4644 1.1 jonathan if (sav->state != SADB_SASTATE_DEAD) {
4645 1.1 jonathan ipseclog((LOG_DEBUG, "key_timehandler: "
4646 1.1 jonathan "invalid sav->state "
4647 1.1 jonathan "(queue: %d SA: %d): "
4648 1.1 jonathan "kill it anyway\n",
4649 1.1 jonathan SADB_SASTATE_DEAD, sav->state));
4650 1.1 jonathan }
4651 1.1 jonathan
4652 1.1 jonathan /*
4653 1.1 jonathan * do not call key_freesav() here.
4654 1.1 jonathan * sav should already be freed, and sav->refcnt
4655 1.1 jonathan * shows other references to sav
4656 1.1 jonathan * (such as from SPD).
4657 1.1 jonathan */
4658 1.1 jonathan }
4659 1.1 jonathan }
4660 1.1 jonathan }
4661 1.1 jonathan
4662 1.1 jonathan #ifndef IPSEC_NONBLOCK_ACQUIRE
4663 1.1 jonathan /* ACQ tree */
4664 1.1 jonathan {
4665 1.1 jonathan struct secacq *acq, *nextacq;
4666 1.1 jonathan
4667 1.1 jonathan for (acq = LIST_FIRST(&acqtree);
4668 1.1 jonathan acq != NULL;
4669 1.1 jonathan acq = nextacq) {
4670 1.1 jonathan
4671 1.1 jonathan nextacq = LIST_NEXT(acq, chain);
4672 1.1 jonathan
4673 1.1 jonathan if (now - acq->created > key_blockacq_lifetime
4674 1.1 jonathan && __LIST_CHAINED(acq)) {
4675 1.1 jonathan LIST_REMOVE(acq, chain);
4676 1.1 jonathan KFREE(acq);
4677 1.1 jonathan }
4678 1.1 jonathan }
4679 1.1 jonathan }
4680 1.1 jonathan #endif
4681 1.1 jonathan
4682 1.1 jonathan /* SP ACQ tree */
4683 1.1 jonathan {
4684 1.1 jonathan struct secspacq *acq, *nextacq;
4685 1.1 jonathan
4686 1.1 jonathan for (acq = LIST_FIRST(&spacqtree);
4687 1.1 jonathan acq != NULL;
4688 1.1 jonathan acq = nextacq) {
4689 1.1 jonathan
4690 1.1 jonathan nextacq = LIST_NEXT(acq, chain);
4691 1.1 jonathan
4692 1.1 jonathan if (now - acq->created > key_blockacq_lifetime
4693 1.1 jonathan && __LIST_CHAINED(acq)) {
4694 1.1 jonathan LIST_REMOVE(acq, chain);
4695 1.1 jonathan KFREE(acq);
4696 1.1 jonathan }
4697 1.1 jonathan }
4698 1.1 jonathan }
4699 1.1 jonathan
4700 1.1 jonathan /* initialize random seed */
4701 1.1 jonathan if (key_tick_init_random++ > key_int_random) {
4702 1.1 jonathan key_tick_init_random = 0;
4703 1.1 jonathan key_srandom();
4704 1.1 jonathan }
4705 1.1 jonathan
4706 1.1 jonathan #ifndef IPSEC_DEBUG2
4707 1.1 jonathan /* do exchange to tick time !! */
4708 1.40 degroote callout_reset(&key_timehandler_ch, hz, key_timehandler, NULL);
4709 1.1 jonathan #endif /* IPSEC_DEBUG2 */
4710 1.1 jonathan
4711 1.53 ad mutex_exit(softnet_lock);
4712 1.1 jonathan splx(s);
4713 1.1 jonathan return;
4714 1.1 jonathan }
4715 1.1 jonathan
4716 1.1 jonathan #ifdef __NetBSD__
4717 1.29 christos void srandom(int);
4718 1.30 christos void srandom(int arg) {return;}
4719 1.1 jonathan #endif
4720 1.1 jonathan
4721 1.1 jonathan /*
4722 1.1 jonathan * to initialize a seed for random()
4723 1.1 jonathan */
4724 1.1 jonathan static void
4725 1.1 jonathan key_srandom()
4726 1.1 jonathan {
4727 1.1 jonathan srandom(time_second);
4728 1.1 jonathan }
4729 1.1 jonathan
4730 1.1 jonathan u_long
4731 1.1 jonathan key_random()
4732 1.1 jonathan {
4733 1.1 jonathan u_long value;
4734 1.1 jonathan
4735 1.1 jonathan key_randomfill(&value, sizeof(value));
4736 1.1 jonathan return value;
4737 1.1 jonathan }
4738 1.1 jonathan
4739 1.1 jonathan void
4740 1.49 degroote key_randomfill(void *p, size_t l)
4741 1.1 jonathan {
4742 1.1 jonathan size_t n;
4743 1.1 jonathan u_long v;
4744 1.1 jonathan static int warn = 1;
4745 1.1 jonathan
4746 1.1 jonathan n = 0;
4747 1.1 jonathan n = (size_t)read_random(p, (u_int)l);
4748 1.1 jonathan /* last resort */
4749 1.1 jonathan while (n < l) {
4750 1.1 jonathan v = random();
4751 1.49 degroote memcpy((u_int8_t *)p + n, &v,
4752 1.1 jonathan l - n < sizeof(v) ? l - n : sizeof(v));
4753 1.1 jonathan n += sizeof(v);
4754 1.1 jonathan
4755 1.1 jonathan if (warn) {
4756 1.1 jonathan printf("WARNING: pseudo-random number generator "
4757 1.1 jonathan "used for IPsec processing\n");
4758 1.1 jonathan warn = 0;
4759 1.1 jonathan }
4760 1.1 jonathan }
4761 1.1 jonathan }
4762 1.1 jonathan
4763 1.1 jonathan /*
4764 1.1 jonathan * map SADB_SATYPE_* to IPPROTO_*.
4765 1.1 jonathan * if satype == SADB_SATYPE then satype is mapped to ~0.
4766 1.1 jonathan * OUT:
4767 1.1 jonathan * 0: invalid satype.
4768 1.1 jonathan */
4769 1.1 jonathan static u_int16_t
4770 1.49 degroote key_satype2proto(u_int8_t satype)
4771 1.1 jonathan {
4772 1.1 jonathan switch (satype) {
4773 1.1 jonathan case SADB_SATYPE_UNSPEC:
4774 1.1 jonathan return IPSEC_PROTO_ANY;
4775 1.1 jonathan case SADB_SATYPE_AH:
4776 1.1 jonathan return IPPROTO_AH;
4777 1.1 jonathan case SADB_SATYPE_ESP:
4778 1.1 jonathan return IPPROTO_ESP;
4779 1.1 jonathan case SADB_X_SATYPE_IPCOMP:
4780 1.1 jonathan return IPPROTO_IPCOMP;
4781 1.12 jonathan case SADB_X_SATYPE_TCPSIGNATURE:
4782 1.12 jonathan return IPPROTO_TCP;
4783 1.1 jonathan default:
4784 1.1 jonathan return 0;
4785 1.1 jonathan }
4786 1.1 jonathan /* NOTREACHED */
4787 1.1 jonathan }
4788 1.1 jonathan
4789 1.1 jonathan /*
4790 1.1 jonathan * map IPPROTO_* to SADB_SATYPE_*
4791 1.1 jonathan * OUT:
4792 1.1 jonathan * 0: invalid protocol type.
4793 1.1 jonathan */
4794 1.1 jonathan static u_int8_t
4795 1.49 degroote key_proto2satype(u_int16_t proto)
4796 1.1 jonathan {
4797 1.1 jonathan switch (proto) {
4798 1.1 jonathan case IPPROTO_AH:
4799 1.1 jonathan return SADB_SATYPE_AH;
4800 1.1 jonathan case IPPROTO_ESP:
4801 1.1 jonathan return SADB_SATYPE_ESP;
4802 1.1 jonathan case IPPROTO_IPCOMP:
4803 1.1 jonathan return SADB_X_SATYPE_IPCOMP;
4804 1.12 jonathan case IPPROTO_TCP:
4805 1.12 jonathan return SADB_X_SATYPE_TCPSIGNATURE;
4806 1.1 jonathan default:
4807 1.1 jonathan return 0;
4808 1.1 jonathan }
4809 1.1 jonathan /* NOTREACHED */
4810 1.1 jonathan }
4811 1.1 jonathan
4812 1.48 degroote static int
4813 1.49 degroote key_setsecasidx(int proto, int mode, int reqid,
4814 1.49 degroote const struct sadb_address * src,
4815 1.49 degroote const struct sadb_address * dst,
4816 1.49 degroote struct secasindex * saidx)
4817 1.48 degroote {
4818 1.48 degroote const union sockaddr_union * src_u =
4819 1.48 degroote (const union sockaddr_union *) src;
4820 1.48 degroote const union sockaddr_union * dst_u =
4821 1.48 degroote (const union sockaddr_union *) dst;
4822 1.48 degroote
4823 1.48 degroote /* sa len safety check */
4824 1.48 degroote if (key_checksalen(src_u) != 0)
4825 1.48 degroote return -1;
4826 1.48 degroote if (key_checksalen(dst_u) != 0)
4827 1.48 degroote return -1;
4828 1.48 degroote
4829 1.48 degroote memset(saidx, 0, sizeof(*saidx));
4830 1.48 degroote saidx->proto = proto;
4831 1.48 degroote saidx->mode = mode;
4832 1.48 degroote saidx->reqid = reqid;
4833 1.48 degroote memcpy(&saidx->src, src_u, src_u->sa.sa_len);
4834 1.48 degroote memcpy(&saidx->dst, dst_u, dst_u->sa.sa_len);
4835 1.48 degroote
4836 1.48 degroote #ifndef IPSEC_NAT_T
4837 1.49 degroote key_porttosaddr(&((saidx)->src),0);
4838 1.48 degroote key_porttosaddr(&((saidx)->dst),0);
4839 1.48 degroote #endif
4840 1.48 degroote return 0;
4841 1.48 degroote }
4842 1.48 degroote
4843 1.1 jonathan /* %%% PF_KEY */
4844 1.1 jonathan /*
4845 1.1 jonathan * SADB_GETSPI processing is to receive
4846 1.1 jonathan * <base, (SA2), src address, dst address, (SPI range)>
4847 1.1 jonathan * from the IKMPd, to assign a unique spi value, to hang on the INBOUND
4848 1.1 jonathan * tree with the status of LARVAL, and send
4849 1.1 jonathan * <base, SA(*), address(SD)>
4850 1.1 jonathan * to the IKMPd.
4851 1.1 jonathan *
4852 1.1 jonathan * IN: mhp: pointer to the pointer to each header.
4853 1.1 jonathan * OUT: NULL if fail.
4854 1.1 jonathan * other if success, return pointer to the message to send.
4855 1.1 jonathan */
4856 1.1 jonathan static int
4857 1.49 degroote key_getspi(struct socket *so, struct mbuf *m,
4858 1.49 degroote const struct sadb_msghdr *mhp)
4859 1.1 jonathan {
4860 1.1 jonathan struct sadb_address *src0, *dst0;
4861 1.1 jonathan struct secasindex saidx;
4862 1.1 jonathan struct secashead *newsah;
4863 1.1 jonathan struct secasvar *newsav;
4864 1.1 jonathan u_int8_t proto;
4865 1.1 jonathan u_int32_t spi;
4866 1.1 jonathan u_int8_t mode;
4867 1.34 degroote u_int16_t reqid;
4868 1.1 jonathan int error;
4869 1.1 jonathan
4870 1.1 jonathan /* sanity check */
4871 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
4872 1.24 christos panic("key_getspi: NULL pointer is passed");
4873 1.1 jonathan
4874 1.1 jonathan if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
4875 1.1 jonathan mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
4876 1.1 jonathan ipseclog((LOG_DEBUG, "key_getspi: invalid message is passed.\n"));
4877 1.1 jonathan return key_senderror(so, m, EINVAL);
4878 1.1 jonathan }
4879 1.1 jonathan if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
4880 1.1 jonathan mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
4881 1.1 jonathan ipseclog((LOG_DEBUG, "key_getspi: invalid message is passed.\n"));
4882 1.1 jonathan return key_senderror(so, m, EINVAL);
4883 1.1 jonathan }
4884 1.1 jonathan if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
4885 1.1 jonathan mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
4886 1.1 jonathan reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
4887 1.1 jonathan } else {
4888 1.1 jonathan mode = IPSEC_MODE_ANY;
4889 1.1 jonathan reqid = 0;
4890 1.1 jonathan }
4891 1.1 jonathan
4892 1.1 jonathan src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
4893 1.1 jonathan dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
4894 1.1 jonathan
4895 1.1 jonathan /* map satype to proto */
4896 1.1 jonathan if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
4897 1.1 jonathan ipseclog((LOG_DEBUG, "key_getspi: invalid satype is passed.\n"));
4898 1.1 jonathan return key_senderror(so, m, EINVAL);
4899 1.1 jonathan }
4900 1.1 jonathan
4901 1.1 jonathan
4902 1.48 degroote if ((error = key_setsecasidx(proto, mode, reqid, src0 + 1,
4903 1.48 degroote dst0 + 1, &saidx)) != 0)
4904 1.48 degroote return key_senderror(so, m, EINVAL);
4905 1.1 jonathan
4906 1.1 jonathan /* SPI allocation */
4907 1.1 jonathan spi = key_do_getnewspi((struct sadb_spirange *)mhp->ext[SADB_EXT_SPIRANGE],
4908 1.1 jonathan &saidx);
4909 1.1 jonathan if (spi == 0)
4910 1.1 jonathan return key_senderror(so, m, EINVAL);
4911 1.1 jonathan
4912 1.1 jonathan /* get a SA index */
4913 1.1 jonathan if ((newsah = key_getsah(&saidx)) == NULL) {
4914 1.1 jonathan /* create a new SA index */
4915 1.1 jonathan if ((newsah = key_newsah(&saidx)) == NULL) {
4916 1.1 jonathan ipseclog((LOG_DEBUG, "key_getspi: No more memory.\n"));
4917 1.1 jonathan return key_senderror(so, m, ENOBUFS);
4918 1.1 jonathan }
4919 1.1 jonathan }
4920 1.1 jonathan
4921 1.1 jonathan /* get a new SA */
4922 1.1 jonathan /* XXX rewrite */
4923 1.1 jonathan newsav = KEY_NEWSAV(m, mhp, newsah, &error);
4924 1.1 jonathan if (newsav == NULL) {
4925 1.1 jonathan /* XXX don't free new SA index allocated in above. */
4926 1.1 jonathan return key_senderror(so, m, error);
4927 1.1 jonathan }
4928 1.1 jonathan
4929 1.1 jonathan /* set spi */
4930 1.1 jonathan newsav->spi = htonl(spi);
4931 1.1 jonathan
4932 1.1 jonathan #ifndef IPSEC_NONBLOCK_ACQUIRE
4933 1.1 jonathan /* delete the entry in acqtree */
4934 1.1 jonathan if (mhp->msg->sadb_msg_seq != 0) {
4935 1.1 jonathan struct secacq *acq;
4936 1.1 jonathan if ((acq = key_getacqbyseq(mhp->msg->sadb_msg_seq)) != NULL) {
4937 1.1 jonathan /* reset counter in order to deletion by timehandler. */
4938 1.1 jonathan acq->created = time_second;
4939 1.1 jonathan acq->count = 0;
4940 1.1 jonathan }
4941 1.1 jonathan }
4942 1.1 jonathan #endif
4943 1.1 jonathan
4944 1.1 jonathan {
4945 1.1 jonathan struct mbuf *n, *nn;
4946 1.1 jonathan struct sadb_sa *m_sa;
4947 1.1 jonathan struct sadb_msg *newmsg;
4948 1.1 jonathan int off, len;
4949 1.1 jonathan
4950 1.1 jonathan /* create new sadb_msg to reply. */
4951 1.1 jonathan len = PFKEY_ALIGN8(sizeof(struct sadb_msg)) +
4952 1.1 jonathan PFKEY_ALIGN8(sizeof(struct sadb_sa));
4953 1.1 jonathan if (len > MCLBYTES)
4954 1.1 jonathan return key_senderror(so, m, ENOBUFS);
4955 1.1 jonathan
4956 1.1 jonathan MGETHDR(n, M_DONTWAIT, MT_DATA);
4957 1.1 jonathan if (len > MHLEN) {
4958 1.1 jonathan MCLGET(n, M_DONTWAIT);
4959 1.1 jonathan if ((n->m_flags & M_EXT) == 0) {
4960 1.1 jonathan m_freem(n);
4961 1.1 jonathan n = NULL;
4962 1.1 jonathan }
4963 1.1 jonathan }
4964 1.1 jonathan if (!n)
4965 1.1 jonathan return key_senderror(so, m, ENOBUFS);
4966 1.1 jonathan
4967 1.1 jonathan n->m_len = len;
4968 1.1 jonathan n->m_next = NULL;
4969 1.1 jonathan off = 0;
4970 1.1 jonathan
4971 1.39 degroote m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, char *) + off);
4972 1.1 jonathan off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
4973 1.1 jonathan
4974 1.39 degroote m_sa = (struct sadb_sa *)(mtod(n, char *) + off);
4975 1.1 jonathan m_sa->sadb_sa_len = PFKEY_UNIT64(sizeof(struct sadb_sa));
4976 1.1 jonathan m_sa->sadb_sa_exttype = SADB_EXT_SA;
4977 1.1 jonathan m_sa->sadb_sa_spi = htonl(spi);
4978 1.1 jonathan off += PFKEY_ALIGN8(sizeof(struct sadb_sa));
4979 1.1 jonathan
4980 1.1 jonathan #ifdef DIAGNOSTIC
4981 1.1 jonathan if (off != len)
4982 1.1 jonathan panic("length inconsistency in key_getspi");
4983 1.1 jonathan #endif
4984 1.1 jonathan
4985 1.1 jonathan n->m_next = key_gather_mbuf(m, mhp, 0, 2, SADB_EXT_ADDRESS_SRC,
4986 1.1 jonathan SADB_EXT_ADDRESS_DST);
4987 1.1 jonathan if (!n->m_next) {
4988 1.1 jonathan m_freem(n);
4989 1.1 jonathan return key_senderror(so, m, ENOBUFS);
4990 1.1 jonathan }
4991 1.1 jonathan
4992 1.1 jonathan if (n->m_len < sizeof(struct sadb_msg)) {
4993 1.1 jonathan n = m_pullup(n, sizeof(struct sadb_msg));
4994 1.1 jonathan if (n == NULL)
4995 1.1 jonathan return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
4996 1.1 jonathan }
4997 1.1 jonathan
4998 1.1 jonathan n->m_pkthdr.len = 0;
4999 1.1 jonathan for (nn = n; nn; nn = nn->m_next)
5000 1.1 jonathan n->m_pkthdr.len += nn->m_len;
5001 1.1 jonathan
5002 1.1 jonathan newmsg = mtod(n, struct sadb_msg *);
5003 1.1 jonathan newmsg->sadb_msg_seq = newsav->seq;
5004 1.1 jonathan newmsg->sadb_msg_errno = 0;
5005 1.1 jonathan newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
5006 1.1 jonathan
5007 1.1 jonathan m_freem(m);
5008 1.1 jonathan return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
5009 1.1 jonathan }
5010 1.1 jonathan }
5011 1.1 jonathan
5012 1.1 jonathan /*
5013 1.1 jonathan * allocating new SPI
5014 1.1 jonathan * called by key_getspi().
5015 1.1 jonathan * OUT:
5016 1.1 jonathan * 0: failure.
5017 1.1 jonathan * others: success.
5018 1.1 jonathan */
5019 1.1 jonathan static u_int32_t
5020 1.49 degroote key_do_getnewspi(struct sadb_spirange *spirange,
5021 1.49 degroote struct secasindex *saidx)
5022 1.1 jonathan {
5023 1.1 jonathan u_int32_t newspi;
5024 1.25 christos u_int32_t spmin, spmax;
5025 1.1 jonathan int count = key_spi_trycnt;
5026 1.1 jonathan
5027 1.1 jonathan /* set spi range to allocate */
5028 1.1 jonathan if (spirange != NULL) {
5029 1.25 christos spmin = spirange->sadb_spirange_min;
5030 1.25 christos spmax = spirange->sadb_spirange_max;
5031 1.1 jonathan } else {
5032 1.25 christos spmin = key_spi_minval;
5033 1.25 christos spmax = key_spi_maxval;
5034 1.1 jonathan }
5035 1.1 jonathan /* IPCOMP needs 2-byte SPI */
5036 1.1 jonathan if (saidx->proto == IPPROTO_IPCOMP) {
5037 1.1 jonathan u_int32_t t;
5038 1.25 christos if (spmin >= 0x10000)
5039 1.25 christos spmin = 0xffff;
5040 1.25 christos if (spmax >= 0x10000)
5041 1.25 christos spmax = 0xffff;
5042 1.25 christos if (spmin > spmax) {
5043 1.25 christos t = spmin; spmin = spmax; spmax = t;
5044 1.1 jonathan }
5045 1.1 jonathan }
5046 1.1 jonathan
5047 1.25 christos if (spmin == spmax) {
5048 1.43 degroote if (key_checkspidup(saidx, htonl(spmin)) != NULL) {
5049 1.25 christos ipseclog((LOG_DEBUG, "key_do_getnewspi: SPI %u exists already.\n", spmin));
5050 1.1 jonathan return 0;
5051 1.1 jonathan }
5052 1.1 jonathan
5053 1.1 jonathan count--; /* taking one cost. */
5054 1.25 christos newspi = spmin;
5055 1.1 jonathan
5056 1.1 jonathan } else {
5057 1.1 jonathan
5058 1.1 jonathan /* init SPI */
5059 1.1 jonathan newspi = 0;
5060 1.1 jonathan
5061 1.1 jonathan /* when requesting to allocate spi ranged */
5062 1.1 jonathan while (count--) {
5063 1.1 jonathan /* generate pseudo-random SPI value ranged. */
5064 1.25 christos newspi = spmin + (key_random() % (spmax - spmin + 1));
5065 1.1 jonathan
5066 1.43 degroote if (key_checkspidup(saidx, htonl(newspi)) == NULL)
5067 1.1 jonathan break;
5068 1.1 jonathan }
5069 1.1 jonathan
5070 1.1 jonathan if (count == 0 || newspi == 0) {
5071 1.1 jonathan ipseclog((LOG_DEBUG, "key_do_getnewspi: to allocate spi is failed.\n"));
5072 1.1 jonathan return 0;
5073 1.1 jonathan }
5074 1.1 jonathan }
5075 1.1 jonathan
5076 1.1 jonathan /* statistics */
5077 1.1 jonathan keystat.getspi_count =
5078 1.1 jonathan (keystat.getspi_count + key_spi_trycnt - count) / 2;
5079 1.1 jonathan
5080 1.1 jonathan return newspi;
5081 1.1 jonathan }
5082 1.1 jonathan
5083 1.48 degroote #ifdef IPSEC_NAT_T
5084 1.48 degroote /* Handle IPSEC_NAT_T info if present */
5085 1.48 degroote static int
5086 1.49 degroote key_handle_natt_info(struct secasvar *sav,
5087 1.49 degroote const struct sadb_msghdr *mhp)
5088 1.48 degroote {
5089 1.48 degroote
5090 1.48 degroote if (mhp->ext[SADB_X_EXT_NAT_T_OA] != NULL)
5091 1.48 degroote printf("update: NAT-T OA present\n");
5092 1.48 degroote
5093 1.48 degroote if ((mhp->ext[SADB_X_EXT_NAT_T_TYPE] != NULL) &&
5094 1.48 degroote (mhp->ext[SADB_X_EXT_NAT_T_SPORT] != NULL) &&
5095 1.48 degroote (mhp->ext[SADB_X_EXT_NAT_T_DPORT] != NULL)) {
5096 1.48 degroote struct sadb_x_nat_t_type *type;
5097 1.48 degroote struct sadb_x_nat_t_port *sport;
5098 1.48 degroote struct sadb_x_nat_t_port *dport;
5099 1.48 degroote struct sadb_address *addr;
5100 1.48 degroote struct sadb_x_nat_t_frag *frag;
5101 1.48 degroote
5102 1.48 degroote if ((mhp->extlen[SADB_X_EXT_NAT_T_TYPE] < sizeof(*type)) ||
5103 1.48 degroote (mhp->extlen[SADB_X_EXT_NAT_T_SPORT] < sizeof(*sport)) ||
5104 1.48 degroote (mhp->extlen[SADB_X_EXT_NAT_T_DPORT] < sizeof(*dport))) {
5105 1.48 degroote ipseclog((LOG_DEBUG, "key_update: "
5106 1.48 degroote "invalid message.\n"));
5107 1.48 degroote return -1;
5108 1.48 degroote }
5109 1.48 degroote
5110 1.48 degroote if ((mhp->ext[SADB_X_EXT_NAT_T_OA] != NULL) &&
5111 1.48 degroote (mhp->extlen[SADB_X_EXT_NAT_T_OA] < sizeof(*addr))) {
5112 1.48 degroote ipseclog((LOG_DEBUG, "key_update: invalid message\n"));
5113 1.48 degroote return -1;
5114 1.48 degroote }
5115 1.48 degroote
5116 1.48 degroote if ((mhp->ext[SADB_X_EXT_NAT_T_FRAG] != NULL) &&
5117 1.48 degroote (mhp->extlen[SADB_X_EXT_NAT_T_FRAG] < sizeof(*frag))) {
5118 1.48 degroote ipseclog((LOG_DEBUG, "key_update: invalid message\n"));
5119 1.48 degroote return -1;
5120 1.48 degroote }
5121 1.48 degroote
5122 1.48 degroote type = (struct sadb_x_nat_t_type *)
5123 1.48 degroote mhp->ext[SADB_X_EXT_NAT_T_TYPE];
5124 1.48 degroote sport = (struct sadb_x_nat_t_port *)
5125 1.48 degroote mhp->ext[SADB_X_EXT_NAT_T_SPORT];
5126 1.48 degroote dport = (struct sadb_x_nat_t_port *)
5127 1.48 degroote mhp->ext[SADB_X_EXT_NAT_T_DPORT];
5128 1.48 degroote addr = (struct sadb_address *)
5129 1.48 degroote mhp->ext[SADB_X_EXT_NAT_T_OA];
5130 1.48 degroote frag = (struct sadb_x_nat_t_frag *)
5131 1.48 degroote mhp->ext[SADB_X_EXT_NAT_T_FRAG];
5132 1.48 degroote
5133 1.48 degroote if (type)
5134 1.48 degroote sav->natt_type = type->sadb_x_nat_t_type_type;
5135 1.48 degroote if (sport)
5136 1.48 degroote key_porttosaddr(&sav->sah->saidx.src,
5137 1.48 degroote sport->sadb_x_nat_t_port_port);
5138 1.48 degroote if (dport)
5139 1.48 degroote key_porttosaddr(&sav->sah->saidx.dst,
5140 1.48 degroote dport->sadb_x_nat_t_port_port);
5141 1.48 degroote if (frag)
5142 1.48 degroote sav->esp_frag = frag->sadb_x_nat_t_frag_fraglen;
5143 1.48 degroote else
5144 1.48 degroote sav->esp_frag = IP_MAXPACKET;
5145 1.48 degroote }
5146 1.48 degroote
5147 1.48 degroote return 0;
5148 1.48 degroote }
5149 1.48 degroote #endif
5150 1.48 degroote
5151 1.48 degroote
5152 1.1 jonathan /*
5153 1.1 jonathan * SADB_UPDATE processing
5154 1.1 jonathan * receive
5155 1.1 jonathan * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
5156 1.1 jonathan * key(AE), (identity(SD),) (sensitivity)>
5157 1.1 jonathan * from the ikmpd, and update a secasvar entry whose status is SADB_SASTATE_LARVAL.
5158 1.1 jonathan * and send
5159 1.1 jonathan * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
5160 1.1 jonathan * (identity(SD),) (sensitivity)>
5161 1.1 jonathan * to the ikmpd.
5162 1.1 jonathan *
5163 1.1 jonathan * m will always be freed.
5164 1.1 jonathan */
5165 1.1 jonathan static int
5166 1.49 degroote key_update(struct socket *so, struct mbuf *m, const struct sadb_msghdr *mhp)
5167 1.1 jonathan {
5168 1.1 jonathan struct sadb_sa *sa0;
5169 1.1 jonathan struct sadb_address *src0, *dst0;
5170 1.1 jonathan struct secasindex saidx;
5171 1.1 jonathan struct secashead *sah;
5172 1.1 jonathan struct secasvar *sav;
5173 1.1 jonathan u_int16_t proto;
5174 1.1 jonathan u_int8_t mode;
5175 1.34 degroote u_int16_t reqid;
5176 1.1 jonathan int error;
5177 1.1 jonathan
5178 1.1 jonathan /* sanity check */
5179 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
5180 1.24 christos panic("key_update: NULL pointer is passed");
5181 1.1 jonathan
5182 1.1 jonathan /* map satype to proto */
5183 1.1 jonathan if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
5184 1.1 jonathan ipseclog((LOG_DEBUG, "key_update: invalid satype is passed.\n"));
5185 1.1 jonathan return key_senderror(so, m, EINVAL);
5186 1.1 jonathan }
5187 1.1 jonathan
5188 1.1 jonathan if (mhp->ext[SADB_EXT_SA] == NULL ||
5189 1.1 jonathan mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5190 1.1 jonathan mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
5191 1.1 jonathan (mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
5192 1.1 jonathan mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
5193 1.1 jonathan (mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
5194 1.1 jonathan mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
5195 1.1 jonathan (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL &&
5196 1.1 jonathan mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
5197 1.1 jonathan (mhp->ext[SADB_EXT_LIFETIME_HARD] == NULL &&
5198 1.1 jonathan mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
5199 1.1 jonathan ipseclog((LOG_DEBUG, "key_update: invalid message is passed.\n"));
5200 1.1 jonathan return key_senderror(so, m, EINVAL);
5201 1.1 jonathan }
5202 1.1 jonathan if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
5203 1.1 jonathan mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5204 1.1 jonathan mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5205 1.1 jonathan ipseclog((LOG_DEBUG, "key_update: invalid message is passed.\n"));
5206 1.1 jonathan return key_senderror(so, m, EINVAL);
5207 1.1 jonathan }
5208 1.1 jonathan if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
5209 1.1 jonathan mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
5210 1.1 jonathan reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
5211 1.1 jonathan } else {
5212 1.1 jonathan mode = IPSEC_MODE_ANY;
5213 1.1 jonathan reqid = 0;
5214 1.1 jonathan }
5215 1.1 jonathan /* XXX boundary checking for other extensions */
5216 1.1 jonathan
5217 1.1 jonathan sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5218 1.1 jonathan src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
5219 1.1 jonathan dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
5220 1.1 jonathan
5221 1.48 degroote if ((error = key_setsecasidx(proto, mode, reqid, src0 + 1,
5222 1.48 degroote dst0 + 1, &saidx)) != 0)
5223 1.48 degroote return key_senderror(so, m, EINVAL);
5224 1.48 degroote
5225 1.1 jonathan
5226 1.1 jonathan /* get a SA header */
5227 1.1 jonathan if ((sah = key_getsah(&saidx)) == NULL) {
5228 1.1 jonathan ipseclog((LOG_DEBUG, "key_update: no SA index found.\n"));
5229 1.1 jonathan return key_senderror(so, m, ENOENT);
5230 1.1 jonathan }
5231 1.1 jonathan
5232 1.1 jonathan /* set spidx if there */
5233 1.1 jonathan /* XXX rewrite */
5234 1.1 jonathan error = key_setident(sah, m, mhp);
5235 1.1 jonathan if (error)
5236 1.1 jonathan return key_senderror(so, m, error);
5237 1.1 jonathan
5238 1.1 jonathan /* find a SA with sequence number. */
5239 1.1 jonathan #ifdef IPSEC_DOSEQCHECK
5240 1.1 jonathan if (mhp->msg->sadb_msg_seq != 0
5241 1.1 jonathan && (sav = key_getsavbyseq(sah, mhp->msg->sadb_msg_seq)) == NULL) {
5242 1.1 jonathan ipseclog((LOG_DEBUG,
5243 1.1 jonathan "key_update: no larval SA with sequence %u exists.\n",
5244 1.1 jonathan mhp->msg->sadb_msg_seq));
5245 1.1 jonathan return key_senderror(so, m, ENOENT);
5246 1.1 jonathan }
5247 1.1 jonathan #else
5248 1.1 jonathan if ((sav = key_getsavbyspi(sah, sa0->sadb_sa_spi)) == NULL) {
5249 1.1 jonathan ipseclog((LOG_DEBUG,
5250 1.1 jonathan "key_update: no such a SA found (spi:%u)\n",
5251 1.1 jonathan (u_int32_t)ntohl(sa0->sadb_sa_spi)));
5252 1.1 jonathan return key_senderror(so, m, EINVAL);
5253 1.1 jonathan }
5254 1.1 jonathan #endif
5255 1.1 jonathan
5256 1.1 jonathan /* validity check */
5257 1.1 jonathan if (sav->sah->saidx.proto != proto) {
5258 1.1 jonathan ipseclog((LOG_DEBUG,
5259 1.1 jonathan "key_update: protocol mismatched (DB=%u param=%u)\n",
5260 1.1 jonathan sav->sah->saidx.proto, proto));
5261 1.1 jonathan return key_senderror(so, m, EINVAL);
5262 1.1 jonathan }
5263 1.1 jonathan #ifdef IPSEC_DOSEQCHECK
5264 1.1 jonathan if (sav->spi != sa0->sadb_sa_spi) {
5265 1.1 jonathan ipseclog((LOG_DEBUG,
5266 1.1 jonathan "key_update: SPI mismatched (DB:%u param:%u)\n",
5267 1.1 jonathan (u_int32_t)ntohl(sav->spi),
5268 1.1 jonathan (u_int32_t)ntohl(sa0->sadb_sa_spi)));
5269 1.1 jonathan return key_senderror(so, m, EINVAL);
5270 1.1 jonathan }
5271 1.1 jonathan #endif
5272 1.1 jonathan if (sav->pid != mhp->msg->sadb_msg_pid) {
5273 1.1 jonathan ipseclog((LOG_DEBUG,
5274 1.1 jonathan "key_update: pid mismatched (DB:%u param:%u)\n",
5275 1.1 jonathan sav->pid, mhp->msg->sadb_msg_pid));
5276 1.1 jonathan return key_senderror(so, m, EINVAL);
5277 1.1 jonathan }
5278 1.1 jonathan
5279 1.1 jonathan /* copy sav values */
5280 1.1 jonathan error = key_setsaval(sav, m, mhp);
5281 1.1 jonathan if (error) {
5282 1.1 jonathan KEY_FREESAV(&sav);
5283 1.1 jonathan return key_senderror(so, m, error);
5284 1.1 jonathan }
5285 1.1 jonathan
5286 1.1 jonathan /* check SA values to be mature. */
5287 1.1 jonathan if ((mhp->msg->sadb_msg_errno = key_mature(sav)) != 0) {
5288 1.1 jonathan KEY_FREESAV(&sav);
5289 1.1 jonathan return key_senderror(so, m, 0);
5290 1.1 jonathan }
5291 1.1 jonathan
5292 1.48 degroote #ifdef IPSEC_NAT_T
5293 1.48 degroote if ((error = key_handle_natt_info(sav,mhp)) != 0)
5294 1.48 degroote return key_senderror(so, m, EINVAL);
5295 1.48 degroote #endif /* IPSEC_NAT_T */
5296 1.48 degroote
5297 1.1 jonathan {
5298 1.1 jonathan struct mbuf *n;
5299 1.1 jonathan
5300 1.1 jonathan /* set msg buf from mhp */
5301 1.1 jonathan n = key_getmsgbuf_x1(m, mhp);
5302 1.1 jonathan if (n == NULL) {
5303 1.1 jonathan ipseclog((LOG_DEBUG, "key_update: No more memory.\n"));
5304 1.1 jonathan return key_senderror(so, m, ENOBUFS);
5305 1.1 jonathan }
5306 1.1 jonathan
5307 1.1 jonathan m_freem(m);
5308 1.1 jonathan return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5309 1.1 jonathan }
5310 1.1 jonathan }
5311 1.1 jonathan
5312 1.1 jonathan /*
5313 1.1 jonathan * search SAD with sequence for a SA which state is SADB_SASTATE_LARVAL.
5314 1.1 jonathan * only called by key_update().
5315 1.1 jonathan * OUT:
5316 1.1 jonathan * NULL : not found
5317 1.1 jonathan * others : found, pointer to a SA.
5318 1.1 jonathan */
5319 1.1 jonathan #ifdef IPSEC_DOSEQCHECK
5320 1.1 jonathan static struct secasvar *
5321 1.49 degroote key_getsavbyseq(struct secashead *sah, u_int32_t seq)
5322 1.1 jonathan {
5323 1.1 jonathan struct secasvar *sav;
5324 1.1 jonathan u_int state;
5325 1.1 jonathan
5326 1.1 jonathan state = SADB_SASTATE_LARVAL;
5327 1.1 jonathan
5328 1.1 jonathan /* search SAD with sequence number ? */
5329 1.1 jonathan LIST_FOREACH(sav, &sah->savtree[state], chain) {
5330 1.1 jonathan
5331 1.1 jonathan KEY_CHKSASTATE(state, sav->state, "key_getsabyseq");
5332 1.1 jonathan
5333 1.1 jonathan if (sav->seq == seq) {
5334 1.1 jonathan SA_ADDREF(sav);
5335 1.1 jonathan KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
5336 1.1 jonathan printf("DP key_getsavbyseq cause "
5337 1.1 jonathan "refcnt++:%d SA:%p\n",
5338 1.1 jonathan sav->refcnt, sav));
5339 1.1 jonathan return sav;
5340 1.1 jonathan }
5341 1.1 jonathan }
5342 1.1 jonathan
5343 1.1 jonathan return NULL;
5344 1.1 jonathan }
5345 1.1 jonathan #endif
5346 1.1 jonathan
5347 1.1 jonathan /*
5348 1.1 jonathan * SADB_ADD processing
5349 1.1 jonathan * add an entry to SA database, when received
5350 1.1 jonathan * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
5351 1.1 jonathan * key(AE), (identity(SD),) (sensitivity)>
5352 1.1 jonathan * from the ikmpd,
5353 1.1 jonathan * and send
5354 1.1 jonathan * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
5355 1.1 jonathan * (identity(SD),) (sensitivity)>
5356 1.1 jonathan * to the ikmpd.
5357 1.1 jonathan *
5358 1.1 jonathan * IGNORE identity and sensitivity messages.
5359 1.1 jonathan *
5360 1.1 jonathan * m will always be freed.
5361 1.1 jonathan */
5362 1.1 jonathan static int
5363 1.49 degroote key_add(struct socket *so, struct mbuf *m,
5364 1.49 degroote const struct sadb_msghdr *mhp)
5365 1.1 jonathan {
5366 1.1 jonathan struct sadb_sa *sa0;
5367 1.1 jonathan struct sadb_address *src0, *dst0;
5368 1.1 jonathan struct secasindex saidx;
5369 1.1 jonathan struct secashead *newsah;
5370 1.1 jonathan struct secasvar *newsav;
5371 1.1 jonathan u_int16_t proto;
5372 1.1 jonathan u_int8_t mode;
5373 1.34 degroote u_int16_t reqid;
5374 1.1 jonathan int error;
5375 1.1 jonathan
5376 1.1 jonathan /* sanity check */
5377 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
5378 1.24 christos panic("key_add: NULL pointer is passed");
5379 1.1 jonathan
5380 1.1 jonathan /* map satype to proto */
5381 1.1 jonathan if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
5382 1.1 jonathan ipseclog((LOG_DEBUG, "key_add: invalid satype is passed.\n"));
5383 1.1 jonathan return key_senderror(so, m, EINVAL);
5384 1.1 jonathan }
5385 1.1 jonathan
5386 1.1 jonathan if (mhp->ext[SADB_EXT_SA] == NULL ||
5387 1.1 jonathan mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5388 1.1 jonathan mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
5389 1.1 jonathan (mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
5390 1.1 jonathan mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
5391 1.1 jonathan (mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
5392 1.1 jonathan mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
5393 1.1 jonathan (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL &&
5394 1.1 jonathan mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
5395 1.1 jonathan (mhp->ext[SADB_EXT_LIFETIME_HARD] == NULL &&
5396 1.1 jonathan mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
5397 1.1 jonathan ipseclog((LOG_DEBUG, "key_add: invalid message is passed.\n"));
5398 1.1 jonathan return key_senderror(so, m, EINVAL);
5399 1.1 jonathan }
5400 1.1 jonathan if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
5401 1.1 jonathan mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5402 1.1 jonathan mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5403 1.1 jonathan /* XXX need more */
5404 1.1 jonathan ipseclog((LOG_DEBUG, "key_add: invalid message is passed.\n"));
5405 1.1 jonathan return key_senderror(so, m, EINVAL);
5406 1.1 jonathan }
5407 1.1 jonathan if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
5408 1.1 jonathan mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
5409 1.1 jonathan reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
5410 1.1 jonathan } else {
5411 1.1 jonathan mode = IPSEC_MODE_ANY;
5412 1.1 jonathan reqid = 0;
5413 1.1 jonathan }
5414 1.1 jonathan
5415 1.1 jonathan sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5416 1.1 jonathan src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
5417 1.1 jonathan dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
5418 1.1 jonathan
5419 1.48 degroote if ((error = key_setsecasidx(proto, mode, reqid, src0 + 1,
5420 1.48 degroote dst0 + 1, &saidx)) != 0)
5421 1.48 degroote return key_senderror(so, m, EINVAL);
5422 1.1 jonathan
5423 1.1 jonathan /* get a SA header */
5424 1.1 jonathan if ((newsah = key_getsah(&saidx)) == NULL) {
5425 1.1 jonathan /* create a new SA header */
5426 1.1 jonathan if ((newsah = key_newsah(&saidx)) == NULL) {
5427 1.1 jonathan ipseclog((LOG_DEBUG, "key_add: No more memory.\n"));
5428 1.1 jonathan return key_senderror(so, m, ENOBUFS);
5429 1.1 jonathan }
5430 1.1 jonathan }
5431 1.1 jonathan
5432 1.1 jonathan /* set spidx if there */
5433 1.1 jonathan /* XXX rewrite */
5434 1.1 jonathan error = key_setident(newsah, m, mhp);
5435 1.1 jonathan if (error) {
5436 1.1 jonathan return key_senderror(so, m, error);
5437 1.1 jonathan }
5438 1.1 jonathan
5439 1.1 jonathan /* create new SA entry. */
5440 1.1 jonathan /* We can create new SA only if SPI is differenct. */
5441 1.1 jonathan if (key_getsavbyspi(newsah, sa0->sadb_sa_spi)) {
5442 1.1 jonathan ipseclog((LOG_DEBUG, "key_add: SA already exists.\n"));
5443 1.1 jonathan return key_senderror(so, m, EEXIST);
5444 1.1 jonathan }
5445 1.1 jonathan newsav = KEY_NEWSAV(m, mhp, newsah, &error);
5446 1.1 jonathan if (newsav == NULL) {
5447 1.1 jonathan return key_senderror(so, m, error);
5448 1.1 jonathan }
5449 1.1 jonathan
5450 1.1 jonathan /* check SA values to be mature. */
5451 1.1 jonathan if ((error = key_mature(newsav)) != 0) {
5452 1.1 jonathan KEY_FREESAV(&newsav);
5453 1.1 jonathan return key_senderror(so, m, error);
5454 1.1 jonathan }
5455 1.1 jonathan
5456 1.48 degroote #ifdef IPSEC_NAT_T
5457 1.48 degroote if ((error = key_handle_natt_info(newsav, mhp)) != 0)
5458 1.48 degroote return key_senderror(so, m, EINVAL);
5459 1.48 degroote #endif /* IPSEC_NAT_T */
5460 1.48 degroote
5461 1.1 jonathan /*
5462 1.1 jonathan * don't call key_freesav() here, as we would like to keep the SA
5463 1.1 jonathan * in the database on success.
5464 1.1 jonathan */
5465 1.1 jonathan
5466 1.1 jonathan {
5467 1.1 jonathan struct mbuf *n;
5468 1.1 jonathan
5469 1.1 jonathan /* set msg buf from mhp */
5470 1.1 jonathan n = key_getmsgbuf_x1(m, mhp);
5471 1.1 jonathan if (n == NULL) {
5472 1.1 jonathan ipseclog((LOG_DEBUG, "key_update: No more memory.\n"));
5473 1.1 jonathan return key_senderror(so, m, ENOBUFS);
5474 1.1 jonathan }
5475 1.1 jonathan
5476 1.1 jonathan m_freem(m);
5477 1.1 jonathan return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5478 1.1 jonathan }
5479 1.1 jonathan }
5480 1.1 jonathan
5481 1.1 jonathan /* m is retained */
5482 1.1 jonathan static int
5483 1.49 degroote key_setident(struct secashead *sah, struct mbuf *m,
5484 1.49 degroote const struct sadb_msghdr *mhp)
5485 1.1 jonathan {
5486 1.1 jonathan const struct sadb_ident *idsrc, *iddst;
5487 1.1 jonathan int idsrclen, iddstlen;
5488 1.1 jonathan
5489 1.1 jonathan /* sanity check */
5490 1.1 jonathan if (sah == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
5491 1.24 christos panic("key_setident: NULL pointer is passed");
5492 1.1 jonathan
5493 1.1 jonathan /* don't make buffer if not there */
5494 1.1 jonathan if (mhp->ext[SADB_EXT_IDENTITY_SRC] == NULL &&
5495 1.1 jonathan mhp->ext[SADB_EXT_IDENTITY_DST] == NULL) {
5496 1.1 jonathan sah->idents = NULL;
5497 1.1 jonathan sah->identd = NULL;
5498 1.1 jonathan return 0;
5499 1.1 jonathan }
5500 1.22 perry
5501 1.1 jonathan if (mhp->ext[SADB_EXT_IDENTITY_SRC] == NULL ||
5502 1.1 jonathan mhp->ext[SADB_EXT_IDENTITY_DST] == NULL) {
5503 1.1 jonathan ipseclog((LOG_DEBUG, "key_setident: invalid identity.\n"));
5504 1.1 jonathan return EINVAL;
5505 1.1 jonathan }
5506 1.1 jonathan
5507 1.1 jonathan idsrc = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_SRC];
5508 1.1 jonathan iddst = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_DST];
5509 1.1 jonathan idsrclen = mhp->extlen[SADB_EXT_IDENTITY_SRC];
5510 1.1 jonathan iddstlen = mhp->extlen[SADB_EXT_IDENTITY_DST];
5511 1.1 jonathan
5512 1.1 jonathan /* validity check */
5513 1.1 jonathan if (idsrc->sadb_ident_type != iddst->sadb_ident_type) {
5514 1.1 jonathan ipseclog((LOG_DEBUG, "key_setident: ident type mismatch.\n"));
5515 1.1 jonathan return EINVAL;
5516 1.1 jonathan }
5517 1.1 jonathan
5518 1.1 jonathan switch (idsrc->sadb_ident_type) {
5519 1.1 jonathan case SADB_IDENTTYPE_PREFIX:
5520 1.1 jonathan case SADB_IDENTTYPE_FQDN:
5521 1.1 jonathan case SADB_IDENTTYPE_USERFQDN:
5522 1.1 jonathan default:
5523 1.1 jonathan /* XXX do nothing */
5524 1.1 jonathan sah->idents = NULL;
5525 1.1 jonathan sah->identd = NULL;
5526 1.1 jonathan return 0;
5527 1.1 jonathan }
5528 1.1 jonathan
5529 1.1 jonathan /* make structure */
5530 1.1 jonathan KMALLOC(sah->idents, struct sadb_ident *, idsrclen);
5531 1.1 jonathan if (sah->idents == NULL) {
5532 1.1 jonathan ipseclog((LOG_DEBUG, "key_setident: No more memory.\n"));
5533 1.1 jonathan return ENOBUFS;
5534 1.1 jonathan }
5535 1.1 jonathan KMALLOC(sah->identd, struct sadb_ident *, iddstlen);
5536 1.1 jonathan if (sah->identd == NULL) {
5537 1.1 jonathan KFREE(sah->idents);
5538 1.1 jonathan sah->idents = NULL;
5539 1.1 jonathan ipseclog((LOG_DEBUG, "key_setident: No more memory.\n"));
5540 1.1 jonathan return ENOBUFS;
5541 1.1 jonathan }
5542 1.49 degroote memcpy(sah->idents, idsrc, idsrclen);
5543 1.49 degroote memcpy(sah->identd, iddst, iddstlen);
5544 1.1 jonathan
5545 1.1 jonathan return 0;
5546 1.1 jonathan }
5547 1.1 jonathan
5548 1.1 jonathan /*
5549 1.1 jonathan * m will not be freed on return.
5550 1.22 perry * it is caller's responsibility to free the result.
5551 1.1 jonathan */
5552 1.1 jonathan static struct mbuf *
5553 1.49 degroote key_getmsgbuf_x1(struct mbuf *m, const struct sadb_msghdr *mhp)
5554 1.1 jonathan {
5555 1.1 jonathan struct mbuf *n;
5556 1.1 jonathan
5557 1.1 jonathan /* sanity check */
5558 1.1 jonathan if (m == NULL || mhp == NULL || mhp->msg == NULL)
5559 1.24 christos panic("key_getmsgbuf_x1: NULL pointer is passed");
5560 1.1 jonathan
5561 1.1 jonathan /* create new sadb_msg to reply. */
5562 1.1 jonathan n = key_gather_mbuf(m, mhp, 1, 9, SADB_EXT_RESERVED,
5563 1.1 jonathan SADB_EXT_SA, SADB_X_EXT_SA2,
5564 1.1 jonathan SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST,
5565 1.1 jonathan SADB_EXT_LIFETIME_HARD, SADB_EXT_LIFETIME_SOFT,
5566 1.1 jonathan SADB_EXT_IDENTITY_SRC, SADB_EXT_IDENTITY_DST);
5567 1.1 jonathan if (!n)
5568 1.1 jonathan return NULL;
5569 1.1 jonathan
5570 1.1 jonathan if (n->m_len < sizeof(struct sadb_msg)) {
5571 1.1 jonathan n = m_pullup(n, sizeof(struct sadb_msg));
5572 1.1 jonathan if (n == NULL)
5573 1.1 jonathan return NULL;
5574 1.1 jonathan }
5575 1.1 jonathan mtod(n, struct sadb_msg *)->sadb_msg_errno = 0;
5576 1.1 jonathan mtod(n, struct sadb_msg *)->sadb_msg_len =
5577 1.1 jonathan PFKEY_UNIT64(n->m_pkthdr.len);
5578 1.1 jonathan
5579 1.1 jonathan return n;
5580 1.1 jonathan }
5581 1.1 jonathan
5582 1.49 degroote static int key_delete_all (struct socket *, struct mbuf *,
5583 1.49 degroote const struct sadb_msghdr *, u_int16_t);
5584 1.1 jonathan
5585 1.1 jonathan /*
5586 1.1 jonathan * SADB_DELETE processing
5587 1.1 jonathan * receive
5588 1.1 jonathan * <base, SA(*), address(SD)>
5589 1.1 jonathan * from the ikmpd, and set SADB_SASTATE_DEAD,
5590 1.1 jonathan * and send,
5591 1.1 jonathan * <base, SA(*), address(SD)>
5592 1.1 jonathan * to the ikmpd.
5593 1.1 jonathan *
5594 1.1 jonathan * m will always be freed.
5595 1.1 jonathan */
5596 1.1 jonathan static int
5597 1.49 degroote key_delete(struct socket *so, struct mbuf *m,
5598 1.49 degroote const struct sadb_msghdr *mhp)
5599 1.1 jonathan {
5600 1.1 jonathan struct sadb_sa *sa0;
5601 1.1 jonathan struct sadb_address *src0, *dst0;
5602 1.1 jonathan struct secasindex saidx;
5603 1.1 jonathan struct secashead *sah;
5604 1.1 jonathan struct secasvar *sav = NULL;
5605 1.1 jonathan u_int16_t proto;
5606 1.48 degroote int error;
5607 1.1 jonathan
5608 1.1 jonathan /* sanity check */
5609 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
5610 1.24 christos panic("key_delete: NULL pointer is passed");
5611 1.1 jonathan
5612 1.1 jonathan /* map satype to proto */
5613 1.1 jonathan if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
5614 1.1 jonathan ipseclog((LOG_DEBUG, "key_delete: invalid satype is passed.\n"));
5615 1.1 jonathan return key_senderror(so, m, EINVAL);
5616 1.1 jonathan }
5617 1.1 jonathan
5618 1.1 jonathan if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5619 1.1 jonathan mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
5620 1.1 jonathan ipseclog((LOG_DEBUG, "key_delete: invalid message is passed.\n"));
5621 1.1 jonathan return key_senderror(so, m, EINVAL);
5622 1.1 jonathan }
5623 1.1 jonathan
5624 1.1 jonathan if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5625 1.1 jonathan mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5626 1.1 jonathan ipseclog((LOG_DEBUG, "key_delete: invalid message is passed.\n"));
5627 1.1 jonathan return key_senderror(so, m, EINVAL);
5628 1.1 jonathan }
5629 1.1 jonathan
5630 1.1 jonathan if (mhp->ext[SADB_EXT_SA] == NULL) {
5631 1.1 jonathan /*
5632 1.1 jonathan * Caller wants us to delete all non-LARVAL SAs
5633 1.1 jonathan * that match the src/dst. This is used during
5634 1.1 jonathan * IKE INITIAL-CONTACT.
5635 1.1 jonathan */
5636 1.1 jonathan ipseclog((LOG_DEBUG, "key_delete: doing delete all.\n"));
5637 1.1 jonathan return key_delete_all(so, m, mhp, proto);
5638 1.1 jonathan } else if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa)) {
5639 1.1 jonathan ipseclog((LOG_DEBUG, "key_delete: invalid message is passed.\n"));
5640 1.1 jonathan return key_senderror(so, m, EINVAL);
5641 1.1 jonathan }
5642 1.1 jonathan
5643 1.1 jonathan sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5644 1.1 jonathan src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
5645 1.1 jonathan dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
5646 1.1 jonathan
5647 1.48 degroote if ((error = key_setsecasidx(proto, IPSEC_MODE_ANY, 0, src0 + 1,
5648 1.48 degroote dst0 + 1, &saidx)) != 0)
5649 1.48 degroote return key_senderror(so, m, EINVAL);
5650 1.1 jonathan
5651 1.1 jonathan /* get a SA header */
5652 1.1 jonathan LIST_FOREACH(sah, &sahtree, chain) {
5653 1.1 jonathan if (sah->state == SADB_SASTATE_DEAD)
5654 1.1 jonathan continue;
5655 1.1 jonathan if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
5656 1.1 jonathan continue;
5657 1.1 jonathan
5658 1.1 jonathan /* get a SA with SPI. */
5659 1.1 jonathan sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
5660 1.1 jonathan if (sav)
5661 1.1 jonathan break;
5662 1.1 jonathan }
5663 1.1 jonathan if (sah == NULL) {
5664 1.1 jonathan ipseclog((LOG_DEBUG, "key_delete: no SA found.\n"));
5665 1.1 jonathan return key_senderror(so, m, ENOENT);
5666 1.1 jonathan }
5667 1.1 jonathan
5668 1.1 jonathan key_sa_chgstate(sav, SADB_SASTATE_DEAD);
5669 1.1 jonathan KEY_FREESAV(&sav);
5670 1.1 jonathan
5671 1.1 jonathan {
5672 1.1 jonathan struct mbuf *n;
5673 1.1 jonathan struct sadb_msg *newmsg;
5674 1.1 jonathan
5675 1.1 jonathan /* create new sadb_msg to reply. */
5676 1.1 jonathan n = key_gather_mbuf(m, mhp, 1, 4, SADB_EXT_RESERVED,
5677 1.1 jonathan SADB_EXT_SA, SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
5678 1.1 jonathan if (!n)
5679 1.1 jonathan return key_senderror(so, m, ENOBUFS);
5680 1.1 jonathan
5681 1.1 jonathan if (n->m_len < sizeof(struct sadb_msg)) {
5682 1.1 jonathan n = m_pullup(n, sizeof(struct sadb_msg));
5683 1.1 jonathan if (n == NULL)
5684 1.1 jonathan return key_senderror(so, m, ENOBUFS);
5685 1.1 jonathan }
5686 1.1 jonathan newmsg = mtod(n, struct sadb_msg *);
5687 1.1 jonathan newmsg->sadb_msg_errno = 0;
5688 1.1 jonathan newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
5689 1.1 jonathan
5690 1.1 jonathan m_freem(m);
5691 1.1 jonathan return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5692 1.1 jonathan }
5693 1.1 jonathan }
5694 1.1 jonathan
5695 1.1 jonathan /*
5696 1.1 jonathan * delete all SAs for src/dst. Called from key_delete().
5697 1.1 jonathan */
5698 1.1 jonathan static int
5699 1.49 degroote key_delete_all(struct socket *so, struct mbuf *m,
5700 1.49 degroote const struct sadb_msghdr *mhp, u_int16_t proto)
5701 1.1 jonathan {
5702 1.1 jonathan struct sadb_address *src0, *dst0;
5703 1.1 jonathan struct secasindex saidx;
5704 1.1 jonathan struct secashead *sah;
5705 1.1 jonathan struct secasvar *sav, *nextsav;
5706 1.1 jonathan u_int stateidx, state;
5707 1.48 degroote int error;
5708 1.1 jonathan
5709 1.1 jonathan src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
5710 1.1 jonathan dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
5711 1.1 jonathan
5712 1.48 degroote if ((error = key_setsecasidx(proto, IPSEC_MODE_ANY, 0, src0 + 1,
5713 1.48 degroote dst0 + 1, &saidx)) != 0)
5714 1.48 degroote return key_senderror(so, m, EINVAL);
5715 1.1 jonathan
5716 1.1 jonathan LIST_FOREACH(sah, &sahtree, chain) {
5717 1.1 jonathan if (sah->state == SADB_SASTATE_DEAD)
5718 1.1 jonathan continue;
5719 1.1 jonathan if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
5720 1.1 jonathan continue;
5721 1.1 jonathan
5722 1.1 jonathan /* Delete all non-LARVAL SAs. */
5723 1.1 jonathan for (stateidx = 0;
5724 1.1 jonathan stateidx < _ARRAYLEN(saorder_state_alive);
5725 1.1 jonathan stateidx++) {
5726 1.1 jonathan state = saorder_state_alive[stateidx];
5727 1.1 jonathan if (state == SADB_SASTATE_LARVAL)
5728 1.1 jonathan continue;
5729 1.1 jonathan for (sav = LIST_FIRST(&sah->savtree[state]);
5730 1.1 jonathan sav != NULL; sav = nextsav) {
5731 1.1 jonathan nextsav = LIST_NEXT(sav, chain);
5732 1.1 jonathan /* sanity check */
5733 1.1 jonathan if (sav->state != state) {
5734 1.1 jonathan ipseclog((LOG_DEBUG, "key_delete_all: "
5735 1.1 jonathan "invalid sav->state "
5736 1.1 jonathan "(queue: %d SA: %d)\n",
5737 1.1 jonathan state, sav->state));
5738 1.1 jonathan continue;
5739 1.1 jonathan }
5740 1.22 perry
5741 1.1 jonathan key_sa_chgstate(sav, SADB_SASTATE_DEAD);
5742 1.1 jonathan KEY_FREESAV(&sav);
5743 1.1 jonathan }
5744 1.1 jonathan }
5745 1.1 jonathan }
5746 1.1 jonathan {
5747 1.1 jonathan struct mbuf *n;
5748 1.1 jonathan struct sadb_msg *newmsg;
5749 1.1 jonathan
5750 1.1 jonathan /* create new sadb_msg to reply. */
5751 1.1 jonathan n = key_gather_mbuf(m, mhp, 1, 3, SADB_EXT_RESERVED,
5752 1.1 jonathan SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST);
5753 1.1 jonathan if (!n)
5754 1.1 jonathan return key_senderror(so, m, ENOBUFS);
5755 1.1 jonathan
5756 1.1 jonathan if (n->m_len < sizeof(struct sadb_msg)) {
5757 1.1 jonathan n = m_pullup(n, sizeof(struct sadb_msg));
5758 1.1 jonathan if (n == NULL)
5759 1.1 jonathan return key_senderror(so, m, ENOBUFS);
5760 1.1 jonathan }
5761 1.1 jonathan newmsg = mtod(n, struct sadb_msg *);
5762 1.1 jonathan newmsg->sadb_msg_errno = 0;
5763 1.1 jonathan newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
5764 1.1 jonathan
5765 1.1 jonathan m_freem(m);
5766 1.1 jonathan return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
5767 1.1 jonathan }
5768 1.1 jonathan }
5769 1.1 jonathan
5770 1.1 jonathan /*
5771 1.1 jonathan * SADB_GET processing
5772 1.1 jonathan * receive
5773 1.1 jonathan * <base, SA(*), address(SD)>
5774 1.1 jonathan * from the ikmpd, and get a SP and a SA to respond,
5775 1.1 jonathan * and send,
5776 1.1 jonathan * <base, SA, (lifetime(HSC),) address(SD), (address(P),) key(AE),
5777 1.1 jonathan * (identity(SD),) (sensitivity)>
5778 1.1 jonathan * to the ikmpd.
5779 1.1 jonathan *
5780 1.1 jonathan * m will always be freed.
5781 1.1 jonathan */
5782 1.1 jonathan static int
5783 1.49 degroote key_get(struct socket *so, struct mbuf *m,
5784 1.49 degroote const struct sadb_msghdr *mhp)
5785 1.1 jonathan {
5786 1.1 jonathan struct sadb_sa *sa0;
5787 1.1 jonathan struct sadb_address *src0, *dst0;
5788 1.1 jonathan struct secasindex saidx;
5789 1.1 jonathan struct secashead *sah;
5790 1.1 jonathan struct secasvar *sav = NULL;
5791 1.1 jonathan u_int16_t proto;
5792 1.48 degroote int error;
5793 1.1 jonathan
5794 1.1 jonathan /* sanity check */
5795 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
5796 1.24 christos panic("key_get: NULL pointer is passed");
5797 1.1 jonathan
5798 1.1 jonathan /* map satype to proto */
5799 1.1 jonathan if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
5800 1.1 jonathan ipseclog((LOG_DEBUG, "key_get: invalid satype is passed.\n"));
5801 1.1 jonathan return key_senderror(so, m, EINVAL);
5802 1.1 jonathan }
5803 1.1 jonathan
5804 1.1 jonathan if (mhp->ext[SADB_EXT_SA] == NULL ||
5805 1.1 jonathan mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
5806 1.1 jonathan mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
5807 1.1 jonathan ipseclog((LOG_DEBUG, "key_get: invalid message is passed.\n"));
5808 1.1 jonathan return key_senderror(so, m, EINVAL);
5809 1.1 jonathan }
5810 1.1 jonathan if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
5811 1.1 jonathan mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
5812 1.1 jonathan mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
5813 1.1 jonathan ipseclog((LOG_DEBUG, "key_get: invalid message is passed.\n"));
5814 1.1 jonathan return key_senderror(so, m, EINVAL);
5815 1.1 jonathan }
5816 1.1 jonathan
5817 1.1 jonathan sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
5818 1.1 jonathan src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
5819 1.1 jonathan dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
5820 1.1 jonathan
5821 1.48 degroote
5822 1.48 degroote if ((error = key_setsecasidx(proto, IPSEC_MODE_ANY, 0, src0 + 1,
5823 1.48 degroote dst0 + 1, &saidx)) != 0)
5824 1.48 degroote return key_senderror(so, m, EINVAL);
5825 1.1 jonathan
5826 1.1 jonathan /* get a SA header */
5827 1.1 jonathan LIST_FOREACH(sah, &sahtree, chain) {
5828 1.1 jonathan if (sah->state == SADB_SASTATE_DEAD)
5829 1.1 jonathan continue;
5830 1.1 jonathan if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
5831 1.1 jonathan continue;
5832 1.1 jonathan
5833 1.1 jonathan /* get a SA with SPI. */
5834 1.1 jonathan sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
5835 1.1 jonathan if (sav)
5836 1.1 jonathan break;
5837 1.1 jonathan }
5838 1.1 jonathan if (sah == NULL) {
5839 1.1 jonathan ipseclog((LOG_DEBUG, "key_get: no SA found.\n"));
5840 1.1 jonathan return key_senderror(so, m, ENOENT);
5841 1.1 jonathan }
5842 1.1 jonathan
5843 1.1 jonathan {
5844 1.1 jonathan struct mbuf *n;
5845 1.1 jonathan u_int8_t satype;
5846 1.1 jonathan
5847 1.1 jonathan /* map proto to satype */
5848 1.1 jonathan if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
5849 1.1 jonathan ipseclog((LOG_DEBUG, "key_get: there was invalid proto in SAD.\n"));
5850 1.1 jonathan return key_senderror(so, m, EINVAL);
5851 1.1 jonathan }
5852 1.1 jonathan
5853 1.1 jonathan /* create new sadb_msg to reply. */
5854 1.1 jonathan n = key_setdumpsa(sav, SADB_GET, satype, mhp->msg->sadb_msg_seq,
5855 1.1 jonathan mhp->msg->sadb_msg_pid);
5856 1.1 jonathan if (!n)
5857 1.1 jonathan return key_senderror(so, m, ENOBUFS);
5858 1.1 jonathan
5859 1.1 jonathan m_freem(m);
5860 1.1 jonathan return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
5861 1.1 jonathan }
5862 1.1 jonathan }
5863 1.1 jonathan
5864 1.1 jonathan /* XXX make it sysctl-configurable? */
5865 1.1 jonathan static void
5866 1.49 degroote key_getcomb_setlifetime(struct sadb_comb *comb)
5867 1.1 jonathan {
5868 1.1 jonathan
5869 1.1 jonathan comb->sadb_comb_soft_allocations = 1;
5870 1.1 jonathan comb->sadb_comb_hard_allocations = 1;
5871 1.1 jonathan comb->sadb_comb_soft_bytes = 0;
5872 1.1 jonathan comb->sadb_comb_hard_bytes = 0;
5873 1.1 jonathan comb->sadb_comb_hard_addtime = 86400; /* 1 day */
5874 1.1 jonathan comb->sadb_comb_soft_addtime = comb->sadb_comb_soft_addtime * 80 / 100;
5875 1.1 jonathan comb->sadb_comb_soft_usetime = 28800; /* 8 hours */
5876 1.1 jonathan comb->sadb_comb_hard_usetime = comb->sadb_comb_hard_usetime * 80 / 100;
5877 1.1 jonathan }
5878 1.1 jonathan
5879 1.1 jonathan /*
5880 1.1 jonathan * XXX reorder combinations by preference
5881 1.1 jonathan * XXX no idea if the user wants ESP authentication or not
5882 1.1 jonathan */
5883 1.1 jonathan static struct mbuf *
5884 1.1 jonathan key_getcomb_esp()
5885 1.1 jonathan {
5886 1.1 jonathan struct sadb_comb *comb;
5887 1.1 jonathan struct enc_xform *algo;
5888 1.1 jonathan struct mbuf *result = NULL, *m, *n;
5889 1.1 jonathan int encmin;
5890 1.1 jonathan int i, off, o;
5891 1.1 jonathan int totlen;
5892 1.1 jonathan const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
5893 1.1 jonathan
5894 1.1 jonathan m = NULL;
5895 1.1 jonathan for (i = 1; i <= SADB_EALG_MAX; i++) {
5896 1.1 jonathan algo = esp_algorithm_lookup(i);
5897 1.1 jonathan if (algo == NULL)
5898 1.1 jonathan continue;
5899 1.1 jonathan
5900 1.1 jonathan /* discard algorithms with key size smaller than system min */
5901 1.1 jonathan if (_BITS(algo->maxkey) < ipsec_esp_keymin)
5902 1.1 jonathan continue;
5903 1.1 jonathan if (_BITS(algo->minkey) < ipsec_esp_keymin)
5904 1.1 jonathan encmin = ipsec_esp_keymin;
5905 1.1 jonathan else
5906 1.1 jonathan encmin = _BITS(algo->minkey);
5907 1.1 jonathan
5908 1.1 jonathan if (ipsec_esp_auth)
5909 1.1 jonathan m = key_getcomb_ah();
5910 1.1 jonathan else {
5911 1.1 jonathan IPSEC_ASSERT(l <= MLEN,
5912 1.1 jonathan ("key_getcomb_esp: l=%u > MLEN=%lu",
5913 1.1 jonathan l, (u_long) MLEN));
5914 1.1 jonathan MGET(m, M_DONTWAIT, MT_DATA);
5915 1.1 jonathan if (m) {
5916 1.1 jonathan M_ALIGN(m, l);
5917 1.1 jonathan m->m_len = l;
5918 1.1 jonathan m->m_next = NULL;
5919 1.49 degroote memset(mtod(m, void *), 0, m->m_len);
5920 1.1 jonathan }
5921 1.1 jonathan }
5922 1.1 jonathan if (!m)
5923 1.1 jonathan goto fail;
5924 1.1 jonathan
5925 1.1 jonathan totlen = 0;
5926 1.1 jonathan for (n = m; n; n = n->m_next)
5927 1.1 jonathan totlen += n->m_len;
5928 1.1 jonathan IPSEC_ASSERT((totlen % l) == 0,
5929 1.1 jonathan ("key_getcomb_esp: totlen=%u, l=%u", totlen, l));
5930 1.1 jonathan
5931 1.1 jonathan for (off = 0; off < totlen; off += l) {
5932 1.1 jonathan n = m_pulldown(m, off, l, &o);
5933 1.1 jonathan if (!n) {
5934 1.1 jonathan /* m is already freed */
5935 1.1 jonathan goto fail;
5936 1.1 jonathan }
5937 1.39 degroote comb = (struct sadb_comb *)(mtod(n, char *) + o);
5938 1.49 degroote memset(comb, 0, sizeof(*comb));
5939 1.1 jonathan key_getcomb_setlifetime(comb);
5940 1.1 jonathan comb->sadb_comb_encrypt = i;
5941 1.1 jonathan comb->sadb_comb_encrypt_minbits = encmin;
5942 1.1 jonathan comb->sadb_comb_encrypt_maxbits = _BITS(algo->maxkey);
5943 1.1 jonathan }
5944 1.1 jonathan
5945 1.1 jonathan if (!result)
5946 1.1 jonathan result = m;
5947 1.1 jonathan else
5948 1.1 jonathan m_cat(result, m);
5949 1.1 jonathan }
5950 1.1 jonathan
5951 1.1 jonathan return result;
5952 1.1 jonathan
5953 1.1 jonathan fail:
5954 1.1 jonathan if (result)
5955 1.1 jonathan m_freem(result);
5956 1.1 jonathan return NULL;
5957 1.1 jonathan }
5958 1.1 jonathan
5959 1.1 jonathan static void
5960 1.49 degroote key_getsizes_ah(const struct auth_hash *ah, int alg,
5961 1.49 degroote u_int16_t* ksmin, u_int16_t* ksmax)
5962 1.1 jonathan {
5963 1.25 christos *ksmin = *ksmax = ah->keysize;
5964 1.1 jonathan if (ah->keysize == 0) {
5965 1.1 jonathan /*
5966 1.1 jonathan * Transform takes arbitrary key size but algorithm
5967 1.1 jonathan * key size is restricted. Enforce this here.
5968 1.1 jonathan */
5969 1.1 jonathan switch (alg) {
5970 1.25 christos case SADB_X_AALG_MD5: *ksmin = *ksmax = 16; break;
5971 1.25 christos case SADB_X_AALG_SHA: *ksmin = *ksmax = 20; break;
5972 1.25 christos case SADB_X_AALG_NULL: *ksmin = 1; *ksmax = 256; break;
5973 1.1 jonathan default:
5974 1.1 jonathan DPRINTF(("key_getsizes_ah: unknown AH algorithm %u\n",
5975 1.1 jonathan alg));
5976 1.1 jonathan break;
5977 1.1 jonathan }
5978 1.1 jonathan }
5979 1.1 jonathan }
5980 1.1 jonathan
5981 1.1 jonathan /*
5982 1.1 jonathan * XXX reorder combinations by preference
5983 1.1 jonathan */
5984 1.1 jonathan static struct mbuf *
5985 1.1 jonathan key_getcomb_ah()
5986 1.1 jonathan {
5987 1.1 jonathan struct sadb_comb *comb;
5988 1.1 jonathan struct auth_hash *algo;
5989 1.1 jonathan struct mbuf *m;
5990 1.1 jonathan u_int16_t minkeysize, maxkeysize;
5991 1.1 jonathan int i;
5992 1.1 jonathan const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
5993 1.1 jonathan
5994 1.1 jonathan m = NULL;
5995 1.1 jonathan for (i = 1; i <= SADB_AALG_MAX; i++) {
5996 1.1 jonathan #if 1
5997 1.1 jonathan /* we prefer HMAC algorithms, not old algorithms */
5998 1.1 jonathan if (i != SADB_AALG_SHA1HMAC && i != SADB_AALG_MD5HMAC)
5999 1.1 jonathan continue;
6000 1.1 jonathan #endif
6001 1.1 jonathan algo = ah_algorithm_lookup(i);
6002 1.1 jonathan if (!algo)
6003 1.1 jonathan continue;
6004 1.1 jonathan key_getsizes_ah(algo, i, &minkeysize, &maxkeysize);
6005 1.1 jonathan /* discard algorithms with key size smaller than system min */
6006 1.1 jonathan if (_BITS(minkeysize) < ipsec_ah_keymin)
6007 1.1 jonathan continue;
6008 1.1 jonathan
6009 1.1 jonathan if (!m) {
6010 1.1 jonathan IPSEC_ASSERT(l <= MLEN,
6011 1.1 jonathan ("key_getcomb_ah: l=%u > MLEN=%lu",
6012 1.1 jonathan l, (u_long) MLEN));
6013 1.1 jonathan MGET(m, M_DONTWAIT, MT_DATA);
6014 1.1 jonathan if (m) {
6015 1.1 jonathan M_ALIGN(m, l);
6016 1.1 jonathan m->m_len = l;
6017 1.1 jonathan m->m_next = NULL;
6018 1.1 jonathan }
6019 1.1 jonathan } else
6020 1.1 jonathan M_PREPEND(m, l, M_DONTWAIT);
6021 1.1 jonathan if (!m)
6022 1.1 jonathan return NULL;
6023 1.1 jonathan
6024 1.1 jonathan comb = mtod(m, struct sadb_comb *);
6025 1.49 degroote memset(comb, 0, sizeof(*comb));
6026 1.1 jonathan key_getcomb_setlifetime(comb);
6027 1.1 jonathan comb->sadb_comb_auth = i;
6028 1.1 jonathan comb->sadb_comb_auth_minbits = _BITS(minkeysize);
6029 1.1 jonathan comb->sadb_comb_auth_maxbits = _BITS(maxkeysize);
6030 1.1 jonathan }
6031 1.1 jonathan
6032 1.1 jonathan return m;
6033 1.1 jonathan }
6034 1.1 jonathan
6035 1.1 jonathan /*
6036 1.1 jonathan * not really an official behavior. discussed in pf_key (at) inner.net in Sep2000.
6037 1.1 jonathan * XXX reorder combinations by preference
6038 1.1 jonathan */
6039 1.1 jonathan static struct mbuf *
6040 1.1 jonathan key_getcomb_ipcomp()
6041 1.1 jonathan {
6042 1.1 jonathan struct sadb_comb *comb;
6043 1.1 jonathan struct comp_algo *algo;
6044 1.1 jonathan struct mbuf *m;
6045 1.1 jonathan int i;
6046 1.1 jonathan const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
6047 1.1 jonathan
6048 1.1 jonathan m = NULL;
6049 1.1 jonathan for (i = 1; i <= SADB_X_CALG_MAX; i++) {
6050 1.1 jonathan algo = ipcomp_algorithm_lookup(i);
6051 1.1 jonathan if (!algo)
6052 1.1 jonathan continue;
6053 1.1 jonathan
6054 1.1 jonathan if (!m) {
6055 1.1 jonathan IPSEC_ASSERT(l <= MLEN,
6056 1.1 jonathan ("key_getcomb_ipcomp: l=%u > MLEN=%lu",
6057 1.1 jonathan l, (u_long) MLEN));
6058 1.1 jonathan MGET(m, M_DONTWAIT, MT_DATA);
6059 1.1 jonathan if (m) {
6060 1.1 jonathan M_ALIGN(m, l);
6061 1.1 jonathan m->m_len = l;
6062 1.1 jonathan m->m_next = NULL;
6063 1.1 jonathan }
6064 1.1 jonathan } else
6065 1.1 jonathan M_PREPEND(m, l, M_DONTWAIT);
6066 1.1 jonathan if (!m)
6067 1.1 jonathan return NULL;
6068 1.1 jonathan
6069 1.1 jonathan comb = mtod(m, struct sadb_comb *);
6070 1.49 degroote memset(comb, 0, sizeof(*comb));
6071 1.1 jonathan key_getcomb_setlifetime(comb);
6072 1.1 jonathan comb->sadb_comb_encrypt = i;
6073 1.1 jonathan /* what should we set into sadb_comb_*_{min,max}bits? */
6074 1.1 jonathan }
6075 1.1 jonathan
6076 1.1 jonathan return m;
6077 1.1 jonathan }
6078 1.1 jonathan
6079 1.1 jonathan /*
6080 1.1 jonathan * XXX no way to pass mode (transport/tunnel) to userland
6081 1.1 jonathan * XXX replay checking?
6082 1.1 jonathan * XXX sysctl interface to ipsec_{ah,esp}_keymin
6083 1.1 jonathan */
6084 1.1 jonathan static struct mbuf *
6085 1.49 degroote key_getprop(const struct secasindex *saidx)
6086 1.1 jonathan {
6087 1.1 jonathan struct sadb_prop *prop;
6088 1.1 jonathan struct mbuf *m, *n;
6089 1.1 jonathan const int l = PFKEY_ALIGN8(sizeof(struct sadb_prop));
6090 1.1 jonathan int totlen;
6091 1.1 jonathan
6092 1.1 jonathan switch (saidx->proto) {
6093 1.1 jonathan case IPPROTO_ESP:
6094 1.1 jonathan m = key_getcomb_esp();
6095 1.1 jonathan break;
6096 1.1 jonathan case IPPROTO_AH:
6097 1.1 jonathan m = key_getcomb_ah();
6098 1.1 jonathan break;
6099 1.1 jonathan case IPPROTO_IPCOMP:
6100 1.1 jonathan m = key_getcomb_ipcomp();
6101 1.1 jonathan break;
6102 1.1 jonathan default:
6103 1.1 jonathan return NULL;
6104 1.1 jonathan }
6105 1.1 jonathan
6106 1.1 jonathan if (!m)
6107 1.1 jonathan return NULL;
6108 1.1 jonathan M_PREPEND(m, l, M_DONTWAIT);
6109 1.1 jonathan if (!m)
6110 1.1 jonathan return NULL;
6111 1.1 jonathan
6112 1.1 jonathan totlen = 0;
6113 1.1 jonathan for (n = m; n; n = n->m_next)
6114 1.1 jonathan totlen += n->m_len;
6115 1.1 jonathan
6116 1.1 jonathan prop = mtod(m, struct sadb_prop *);
6117 1.49 degroote memset(prop, 0, sizeof(*prop));
6118 1.1 jonathan prop->sadb_prop_len = PFKEY_UNIT64(totlen);
6119 1.1 jonathan prop->sadb_prop_exttype = SADB_EXT_PROPOSAL;
6120 1.1 jonathan prop->sadb_prop_replay = 32; /* XXX */
6121 1.1 jonathan
6122 1.1 jonathan return m;
6123 1.1 jonathan }
6124 1.1 jonathan
6125 1.1 jonathan /*
6126 1.1 jonathan * SADB_ACQUIRE processing called by key_checkrequest() and key_acquire2().
6127 1.1 jonathan * send
6128 1.1 jonathan * <base, SA, address(SD), (address(P)), x_policy,
6129 1.1 jonathan * (identity(SD),) (sensitivity,) proposal>
6130 1.1 jonathan * to KMD, and expect to receive
6131 1.7 wiz * <base> with SADB_ACQUIRE if error occurred,
6132 1.1 jonathan * or
6133 1.1 jonathan * <base, src address, dst address, (SPI range)> with SADB_GETSPI
6134 1.1 jonathan * from KMD by PF_KEY.
6135 1.1 jonathan *
6136 1.1 jonathan * XXX x_policy is outside of RFC2367 (KAME extension).
6137 1.1 jonathan * XXX sensitivity is not supported.
6138 1.1 jonathan * XXX for ipcomp, RFC2367 does not define how to fill in proposal.
6139 1.1 jonathan * see comment for key_getcomb_ipcomp().
6140 1.1 jonathan *
6141 1.1 jonathan * OUT:
6142 1.1 jonathan * 0 : succeed
6143 1.1 jonathan * others: error number
6144 1.1 jonathan */
6145 1.1 jonathan static int
6146 1.1 jonathan key_acquire(const struct secasindex *saidx, struct secpolicy *sp)
6147 1.1 jonathan {
6148 1.1 jonathan struct mbuf *result = NULL, *m;
6149 1.1 jonathan #ifndef IPSEC_NONBLOCK_ACQUIRE
6150 1.1 jonathan struct secacq *newacq;
6151 1.1 jonathan #endif
6152 1.1 jonathan u_int8_t satype;
6153 1.1 jonathan int error = -1;
6154 1.1 jonathan u_int32_t seq;
6155 1.1 jonathan
6156 1.1 jonathan /* sanity check */
6157 1.1 jonathan IPSEC_ASSERT(saidx != NULL, ("key_acquire: null saidx"));
6158 1.1 jonathan satype = key_proto2satype(saidx->proto);
6159 1.1 jonathan IPSEC_ASSERT(satype != 0,
6160 1.1 jonathan ("key_acquire: null satype, protocol %u", saidx->proto));
6161 1.1 jonathan
6162 1.1 jonathan #ifndef IPSEC_NONBLOCK_ACQUIRE
6163 1.1 jonathan /*
6164 1.1 jonathan * We never do anything about acquirng SA. There is anather
6165 1.1 jonathan * solution that kernel blocks to send SADB_ACQUIRE message until
6166 1.1 jonathan * getting something message from IKEd. In later case, to be
6167 1.1 jonathan * managed with ACQUIRING list.
6168 1.1 jonathan */
6169 1.1 jonathan /* Get an entry to check whether sending message or not. */
6170 1.1 jonathan if ((newacq = key_getacq(saidx)) != NULL) {
6171 1.1 jonathan if (key_blockacq_count < newacq->count) {
6172 1.1 jonathan /* reset counter and do send message. */
6173 1.1 jonathan newacq->count = 0;
6174 1.1 jonathan } else {
6175 1.1 jonathan /* increment counter and do nothing. */
6176 1.1 jonathan newacq->count++;
6177 1.1 jonathan return 0;
6178 1.1 jonathan }
6179 1.1 jonathan } else {
6180 1.1 jonathan /* make new entry for blocking to send SADB_ACQUIRE. */
6181 1.1 jonathan if ((newacq = key_newacq(saidx)) == NULL)
6182 1.1 jonathan return ENOBUFS;
6183 1.1 jonathan
6184 1.1 jonathan /* add to acqtree */
6185 1.1 jonathan LIST_INSERT_HEAD(&acqtree, newacq, chain);
6186 1.1 jonathan }
6187 1.1 jonathan #endif
6188 1.1 jonathan
6189 1.1 jonathan
6190 1.1 jonathan #ifndef IPSEC_NONBLOCK_ACQUIRE
6191 1.1 jonathan seq = newacq->seq;
6192 1.1 jonathan #else
6193 1.1 jonathan seq = (acq_seq = (acq_seq == ~0 ? 1 : ++acq_seq));
6194 1.1 jonathan #endif
6195 1.1 jonathan m = key_setsadbmsg(SADB_ACQUIRE, 0, satype, seq, 0, 0);
6196 1.1 jonathan if (!m) {
6197 1.1 jonathan error = ENOBUFS;
6198 1.1 jonathan goto fail;
6199 1.1 jonathan }
6200 1.1 jonathan result = m;
6201 1.1 jonathan
6202 1.1 jonathan /* set sadb_address for saidx's. */
6203 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
6204 1.1 jonathan &saidx->src.sa, FULLMASK, IPSEC_ULPROTO_ANY);
6205 1.1 jonathan if (!m) {
6206 1.1 jonathan error = ENOBUFS;
6207 1.1 jonathan goto fail;
6208 1.1 jonathan }
6209 1.1 jonathan m_cat(result, m);
6210 1.1 jonathan
6211 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
6212 1.1 jonathan &saidx->dst.sa, FULLMASK, IPSEC_ULPROTO_ANY);
6213 1.1 jonathan if (!m) {
6214 1.1 jonathan error = ENOBUFS;
6215 1.1 jonathan goto fail;
6216 1.1 jonathan }
6217 1.1 jonathan m_cat(result, m);
6218 1.1 jonathan
6219 1.1 jonathan /* XXX proxy address (optional) */
6220 1.1 jonathan
6221 1.1 jonathan /* set sadb_x_policy */
6222 1.1 jonathan if (sp) {
6223 1.1 jonathan m = key_setsadbxpolicy(sp->policy, sp->spidx.dir, sp->id);
6224 1.1 jonathan if (!m) {
6225 1.1 jonathan error = ENOBUFS;
6226 1.1 jonathan goto fail;
6227 1.1 jonathan }
6228 1.1 jonathan m_cat(result, m);
6229 1.1 jonathan }
6230 1.1 jonathan
6231 1.1 jonathan /* XXX identity (optional) */
6232 1.1 jonathan #if 0
6233 1.1 jonathan if (idexttype && fqdn) {
6234 1.1 jonathan /* create identity extension (FQDN) */
6235 1.1 jonathan struct sadb_ident *id;
6236 1.1 jonathan int fqdnlen;
6237 1.1 jonathan
6238 1.1 jonathan fqdnlen = strlen(fqdn) + 1; /* +1 for terminating-NUL */
6239 1.1 jonathan id = (struct sadb_ident *)p;
6240 1.49 degroote memset(id, 0, sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
6241 1.1 jonathan id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
6242 1.1 jonathan id->sadb_ident_exttype = idexttype;
6243 1.1 jonathan id->sadb_ident_type = SADB_IDENTTYPE_FQDN;
6244 1.49 degroote memcpy(id + 1, fqdn, fqdnlen);
6245 1.1 jonathan p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(fqdnlen);
6246 1.1 jonathan }
6247 1.1 jonathan
6248 1.1 jonathan if (idexttype) {
6249 1.1 jonathan /* create identity extension (USERFQDN) */
6250 1.1 jonathan struct sadb_ident *id;
6251 1.1 jonathan int userfqdnlen;
6252 1.1 jonathan
6253 1.1 jonathan if (userfqdn) {
6254 1.1 jonathan /* +1 for terminating-NUL */
6255 1.1 jonathan userfqdnlen = strlen(userfqdn) + 1;
6256 1.1 jonathan } else
6257 1.1 jonathan userfqdnlen = 0;
6258 1.1 jonathan id = (struct sadb_ident *)p;
6259 1.49 degroote memset(id, 0, sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
6260 1.1 jonathan id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
6261 1.1 jonathan id->sadb_ident_exttype = idexttype;
6262 1.1 jonathan id->sadb_ident_type = SADB_IDENTTYPE_USERFQDN;
6263 1.1 jonathan /* XXX is it correct? */
6264 1.28 ad if (curlwp)
6265 1.28 ad id->sadb_ident_id = kauth_cred_getuid(curlwp->l_cred);
6266 1.1 jonathan if (userfqdn && userfqdnlen)
6267 1.49 degroote memcpy(id + 1, userfqdn, userfqdnlen);
6268 1.1 jonathan p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(userfqdnlen);
6269 1.1 jonathan }
6270 1.1 jonathan #endif
6271 1.1 jonathan
6272 1.1 jonathan /* XXX sensitivity (optional) */
6273 1.1 jonathan
6274 1.1 jonathan /* create proposal/combination extension */
6275 1.1 jonathan m = key_getprop(saidx);
6276 1.1 jonathan #if 0
6277 1.1 jonathan /*
6278 1.1 jonathan * spec conformant: always attach proposal/combination extension,
6279 1.1 jonathan * the problem is that we have no way to attach it for ipcomp,
6280 1.1 jonathan * due to the way sadb_comb is declared in RFC2367.
6281 1.1 jonathan */
6282 1.1 jonathan if (!m) {
6283 1.1 jonathan error = ENOBUFS;
6284 1.1 jonathan goto fail;
6285 1.1 jonathan }
6286 1.1 jonathan m_cat(result, m);
6287 1.1 jonathan #else
6288 1.1 jonathan /*
6289 1.1 jonathan * outside of spec; make proposal/combination extension optional.
6290 1.1 jonathan */
6291 1.1 jonathan if (m)
6292 1.1 jonathan m_cat(result, m);
6293 1.1 jonathan #endif
6294 1.1 jonathan
6295 1.1 jonathan if ((result->m_flags & M_PKTHDR) == 0) {
6296 1.1 jonathan error = EINVAL;
6297 1.1 jonathan goto fail;
6298 1.1 jonathan }
6299 1.1 jonathan
6300 1.1 jonathan if (result->m_len < sizeof(struct sadb_msg)) {
6301 1.1 jonathan result = m_pullup(result, sizeof(struct sadb_msg));
6302 1.1 jonathan if (result == NULL) {
6303 1.1 jonathan error = ENOBUFS;
6304 1.1 jonathan goto fail;
6305 1.1 jonathan }
6306 1.1 jonathan }
6307 1.1 jonathan
6308 1.1 jonathan result->m_pkthdr.len = 0;
6309 1.1 jonathan for (m = result; m; m = m->m_next)
6310 1.1 jonathan result->m_pkthdr.len += m->m_len;
6311 1.1 jonathan
6312 1.1 jonathan mtod(result, struct sadb_msg *)->sadb_msg_len =
6313 1.1 jonathan PFKEY_UNIT64(result->m_pkthdr.len);
6314 1.1 jonathan
6315 1.1 jonathan return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
6316 1.1 jonathan
6317 1.1 jonathan fail:
6318 1.1 jonathan if (result)
6319 1.1 jonathan m_freem(result);
6320 1.1 jonathan return error;
6321 1.1 jonathan }
6322 1.1 jonathan
6323 1.1 jonathan #ifndef IPSEC_NONBLOCK_ACQUIRE
6324 1.1 jonathan static struct secacq *
6325 1.1 jonathan key_newacq(const struct secasindex *saidx)
6326 1.1 jonathan {
6327 1.1 jonathan struct secacq *newacq;
6328 1.1 jonathan
6329 1.1 jonathan /* get new entry */
6330 1.1 jonathan KMALLOC(newacq, struct secacq *, sizeof(struct secacq));
6331 1.1 jonathan if (newacq == NULL) {
6332 1.1 jonathan ipseclog((LOG_DEBUG, "key_newacq: No more memory.\n"));
6333 1.1 jonathan return NULL;
6334 1.1 jonathan }
6335 1.49 degroote memset(newacq, 0, sizeof(*newacq));
6336 1.1 jonathan
6337 1.1 jonathan /* copy secindex */
6338 1.49 degroote memcpy(&newacq->saidx, saidx, sizeof(newacq->saidx));
6339 1.1 jonathan newacq->seq = (acq_seq == ~0 ? 1 : ++acq_seq);
6340 1.1 jonathan newacq->created = time_second;
6341 1.1 jonathan newacq->count = 0;
6342 1.1 jonathan
6343 1.1 jonathan return newacq;
6344 1.1 jonathan }
6345 1.1 jonathan
6346 1.1 jonathan static struct secacq *
6347 1.1 jonathan key_getacq(const struct secasindex *saidx)
6348 1.1 jonathan {
6349 1.1 jonathan struct secacq *acq;
6350 1.1 jonathan
6351 1.1 jonathan LIST_FOREACH(acq, &acqtree, chain) {
6352 1.1 jonathan if (key_cmpsaidx(saidx, &acq->saidx, CMP_EXACTLY))
6353 1.1 jonathan return acq;
6354 1.1 jonathan }
6355 1.1 jonathan
6356 1.1 jonathan return NULL;
6357 1.1 jonathan }
6358 1.1 jonathan
6359 1.1 jonathan static struct secacq *
6360 1.49 degroote key_getacqbyseq(u_int32_t seq)
6361 1.1 jonathan {
6362 1.1 jonathan struct secacq *acq;
6363 1.1 jonathan
6364 1.1 jonathan LIST_FOREACH(acq, &acqtree, chain) {
6365 1.1 jonathan if (acq->seq == seq)
6366 1.1 jonathan return acq;
6367 1.1 jonathan }
6368 1.1 jonathan
6369 1.1 jonathan return NULL;
6370 1.1 jonathan }
6371 1.1 jonathan #endif
6372 1.1 jonathan
6373 1.1 jonathan static struct secspacq *
6374 1.49 degroote key_newspacq(struct secpolicyindex *spidx)
6375 1.1 jonathan {
6376 1.1 jonathan struct secspacq *acq;
6377 1.1 jonathan
6378 1.1 jonathan /* get new entry */
6379 1.1 jonathan KMALLOC(acq, struct secspacq *, sizeof(struct secspacq));
6380 1.1 jonathan if (acq == NULL) {
6381 1.1 jonathan ipseclog((LOG_DEBUG, "key_newspacq: No more memory.\n"));
6382 1.1 jonathan return NULL;
6383 1.1 jonathan }
6384 1.49 degroote memset(acq, 0, sizeof(*acq));
6385 1.1 jonathan
6386 1.1 jonathan /* copy secindex */
6387 1.49 degroote memcpy(&acq->spidx, spidx, sizeof(acq->spidx));
6388 1.1 jonathan acq->created = time_second;
6389 1.1 jonathan acq->count = 0;
6390 1.1 jonathan
6391 1.1 jonathan return acq;
6392 1.1 jonathan }
6393 1.1 jonathan
6394 1.1 jonathan static struct secspacq *
6395 1.49 degroote key_getspacq(struct secpolicyindex *spidx)
6396 1.1 jonathan {
6397 1.1 jonathan struct secspacq *acq;
6398 1.1 jonathan
6399 1.1 jonathan LIST_FOREACH(acq, &spacqtree, chain) {
6400 1.1 jonathan if (key_cmpspidx_exactly(spidx, &acq->spidx))
6401 1.1 jonathan return acq;
6402 1.1 jonathan }
6403 1.1 jonathan
6404 1.1 jonathan return NULL;
6405 1.1 jonathan }
6406 1.1 jonathan
6407 1.1 jonathan /*
6408 1.1 jonathan * SADB_ACQUIRE processing,
6409 1.1 jonathan * in first situation, is receiving
6410 1.1 jonathan * <base>
6411 1.1 jonathan * from the ikmpd, and clear sequence of its secasvar entry.
6412 1.1 jonathan *
6413 1.1 jonathan * In second situation, is receiving
6414 1.1 jonathan * <base, address(SD), (address(P),) (identity(SD),) (sensitivity,) proposal>
6415 1.1 jonathan * from a user land process, and return
6416 1.1 jonathan * <base, address(SD), (address(P),) (identity(SD),) (sensitivity,) proposal>
6417 1.1 jonathan * to the socket.
6418 1.1 jonathan *
6419 1.1 jonathan * m will always be freed.
6420 1.1 jonathan */
6421 1.1 jonathan static int
6422 1.49 degroote key_acquire2(struct socket *so, struct mbuf *m,
6423 1.49 degroote const struct sadb_msghdr *mhp)
6424 1.1 jonathan {
6425 1.1 jonathan const struct sadb_address *src0, *dst0;
6426 1.1 jonathan struct secasindex saidx;
6427 1.1 jonathan struct secashead *sah;
6428 1.1 jonathan u_int16_t proto;
6429 1.1 jonathan int error;
6430 1.1 jonathan
6431 1.1 jonathan /* sanity check */
6432 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
6433 1.24 christos panic("key_acquire2: NULL pointer is passed");
6434 1.1 jonathan
6435 1.1 jonathan /*
6436 1.1 jonathan * Error message from KMd.
6437 1.7 wiz * We assume that if error was occurred in IKEd, the length of PFKEY
6438 1.1 jonathan * message is equal to the size of sadb_msg structure.
6439 1.7 wiz * We do not raise error even if error occurred in this function.
6440 1.1 jonathan */
6441 1.1 jonathan if (mhp->msg->sadb_msg_len == PFKEY_UNIT64(sizeof(struct sadb_msg))) {
6442 1.1 jonathan #ifndef IPSEC_NONBLOCK_ACQUIRE
6443 1.1 jonathan struct secacq *acq;
6444 1.1 jonathan
6445 1.1 jonathan /* check sequence number */
6446 1.1 jonathan if (mhp->msg->sadb_msg_seq == 0) {
6447 1.1 jonathan ipseclog((LOG_DEBUG, "key_acquire2: must specify sequence number.\n"));
6448 1.1 jonathan m_freem(m);
6449 1.1 jonathan return 0;
6450 1.1 jonathan }
6451 1.1 jonathan
6452 1.1 jonathan if ((acq = key_getacqbyseq(mhp->msg->sadb_msg_seq)) == NULL) {
6453 1.1 jonathan /*
6454 1.1 jonathan * the specified larval SA is already gone, or we got
6455 1.1 jonathan * a bogus sequence number. we can silently ignore it.
6456 1.1 jonathan */
6457 1.1 jonathan m_freem(m);
6458 1.1 jonathan return 0;
6459 1.1 jonathan }
6460 1.1 jonathan
6461 1.1 jonathan /* reset acq counter in order to deletion by timehander. */
6462 1.1 jonathan acq->created = time_second;
6463 1.1 jonathan acq->count = 0;
6464 1.1 jonathan #endif
6465 1.1 jonathan m_freem(m);
6466 1.1 jonathan return 0;
6467 1.1 jonathan }
6468 1.1 jonathan
6469 1.1 jonathan /*
6470 1.1 jonathan * This message is from user land.
6471 1.1 jonathan */
6472 1.1 jonathan
6473 1.1 jonathan /* map satype to proto */
6474 1.1 jonathan if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
6475 1.1 jonathan ipseclog((LOG_DEBUG, "key_acquire2: invalid satype is passed.\n"));
6476 1.1 jonathan return key_senderror(so, m, EINVAL);
6477 1.1 jonathan }
6478 1.1 jonathan
6479 1.1 jonathan if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
6480 1.1 jonathan mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
6481 1.1 jonathan mhp->ext[SADB_EXT_PROPOSAL] == NULL) {
6482 1.1 jonathan /* error */
6483 1.1 jonathan ipseclog((LOG_DEBUG, "key_acquire2: invalid message is passed.\n"));
6484 1.1 jonathan return key_senderror(so, m, EINVAL);
6485 1.1 jonathan }
6486 1.1 jonathan if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
6487 1.1 jonathan mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
6488 1.1 jonathan mhp->extlen[SADB_EXT_PROPOSAL] < sizeof(struct sadb_prop)) {
6489 1.1 jonathan /* error */
6490 1.1 jonathan ipseclog((LOG_DEBUG, "key_acquire2: invalid message is passed.\n"));
6491 1.1 jonathan return key_senderror(so, m, EINVAL);
6492 1.1 jonathan }
6493 1.1 jonathan
6494 1.1 jonathan src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
6495 1.1 jonathan dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
6496 1.1 jonathan
6497 1.48 degroote if ((error = key_setsecasidx(proto, IPSEC_MODE_ANY, 0, src0 + 1,
6498 1.48 degroote dst0 + 1, &saidx)) != 0)
6499 1.48 degroote return key_senderror(so, m, EINVAL);
6500 1.1 jonathan
6501 1.1 jonathan /* get a SA index */
6502 1.1 jonathan LIST_FOREACH(sah, &sahtree, chain) {
6503 1.1 jonathan if (sah->state == SADB_SASTATE_DEAD)
6504 1.1 jonathan continue;
6505 1.1 jonathan if (key_cmpsaidx(&sah->saidx, &saidx, CMP_MODE_REQID))
6506 1.1 jonathan break;
6507 1.1 jonathan }
6508 1.1 jonathan if (sah != NULL) {
6509 1.1 jonathan ipseclog((LOG_DEBUG, "key_acquire2: a SA exists already.\n"));
6510 1.1 jonathan return key_senderror(so, m, EEXIST);
6511 1.1 jonathan }
6512 1.1 jonathan
6513 1.1 jonathan error = key_acquire(&saidx, NULL);
6514 1.1 jonathan if (error != 0) {
6515 1.1 jonathan ipseclog((LOG_DEBUG, "key_acquire2: error %d returned "
6516 1.1 jonathan "from key_acquire.\n", mhp->msg->sadb_msg_errno));
6517 1.1 jonathan return key_senderror(so, m, error);
6518 1.1 jonathan }
6519 1.1 jonathan
6520 1.1 jonathan return key_sendup_mbuf(so, m, KEY_SENDUP_REGISTERED);
6521 1.1 jonathan }
6522 1.1 jonathan
6523 1.1 jonathan /*
6524 1.1 jonathan * SADB_REGISTER processing.
6525 1.1 jonathan * If SATYPE_UNSPEC has been passed as satype, only return sabd_supported.
6526 1.1 jonathan * receive
6527 1.1 jonathan * <base>
6528 1.1 jonathan * from the ikmpd, and register a socket to send PF_KEY messages,
6529 1.1 jonathan * and send
6530 1.1 jonathan * <base, supported>
6531 1.1 jonathan * to KMD by PF_KEY.
6532 1.1 jonathan * If socket is detached, must free from regnode.
6533 1.1 jonathan *
6534 1.1 jonathan * m will always be freed.
6535 1.1 jonathan */
6536 1.1 jonathan static int
6537 1.49 degroote key_register(struct socket *so, struct mbuf *m,
6538 1.49 degroote const struct sadb_msghdr *mhp)
6539 1.1 jonathan {
6540 1.1 jonathan struct secreg *reg, *newreg = 0;
6541 1.1 jonathan
6542 1.1 jonathan /* sanity check */
6543 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
6544 1.24 christos panic("key_register: NULL pointer is passed");
6545 1.1 jonathan
6546 1.1 jonathan /* check for invalid register message */
6547 1.1 jonathan if (mhp->msg->sadb_msg_satype >= sizeof(regtree)/sizeof(regtree[0]))
6548 1.1 jonathan return key_senderror(so, m, EINVAL);
6549 1.1 jonathan
6550 1.1 jonathan /* When SATYPE_UNSPEC is specified, only return sabd_supported. */
6551 1.1 jonathan if (mhp->msg->sadb_msg_satype == SADB_SATYPE_UNSPEC)
6552 1.1 jonathan goto setmsg;
6553 1.1 jonathan
6554 1.1 jonathan /* check whether existing or not */
6555 1.1 jonathan LIST_FOREACH(reg, ®tree[mhp->msg->sadb_msg_satype], chain) {
6556 1.1 jonathan if (reg->so == so) {
6557 1.1 jonathan ipseclog((LOG_DEBUG, "key_register: socket exists already.\n"));
6558 1.1 jonathan return key_senderror(so, m, EEXIST);
6559 1.1 jonathan }
6560 1.1 jonathan }
6561 1.1 jonathan
6562 1.1 jonathan /* create regnode */
6563 1.1 jonathan KMALLOC(newreg, struct secreg *, sizeof(*newreg));
6564 1.1 jonathan if (newreg == NULL) {
6565 1.1 jonathan ipseclog((LOG_DEBUG, "key_register: No more memory.\n"));
6566 1.1 jonathan return key_senderror(so, m, ENOBUFS);
6567 1.1 jonathan }
6568 1.49 degroote memset(newreg, 0, sizeof(*newreg));
6569 1.1 jonathan
6570 1.1 jonathan newreg->so = so;
6571 1.1 jonathan ((struct keycb *)sotorawcb(so))->kp_registered++;
6572 1.1 jonathan
6573 1.1 jonathan /* add regnode to regtree. */
6574 1.1 jonathan LIST_INSERT_HEAD(®tree[mhp->msg->sadb_msg_satype], newreg, chain);
6575 1.1 jonathan
6576 1.1 jonathan setmsg:
6577 1.1 jonathan {
6578 1.1 jonathan struct mbuf *n;
6579 1.1 jonathan struct sadb_msg *newmsg;
6580 1.1 jonathan struct sadb_supported *sup;
6581 1.1 jonathan u_int len, alen, elen;
6582 1.1 jonathan int off;
6583 1.1 jonathan int i;
6584 1.1 jonathan struct sadb_alg *alg;
6585 1.1 jonathan
6586 1.1 jonathan /* create new sadb_msg to reply. */
6587 1.1 jonathan alen = 0;
6588 1.1 jonathan for (i = 1; i <= SADB_AALG_MAX; i++) {
6589 1.1 jonathan if (ah_algorithm_lookup(i))
6590 1.1 jonathan alen += sizeof(struct sadb_alg);
6591 1.1 jonathan }
6592 1.1 jonathan if (alen)
6593 1.1 jonathan alen += sizeof(struct sadb_supported);
6594 1.1 jonathan elen = 0;
6595 1.1 jonathan for (i = 1; i <= SADB_EALG_MAX; i++) {
6596 1.1 jonathan if (esp_algorithm_lookup(i))
6597 1.1 jonathan elen += sizeof(struct sadb_alg);
6598 1.1 jonathan }
6599 1.1 jonathan if (elen)
6600 1.1 jonathan elen += sizeof(struct sadb_supported);
6601 1.1 jonathan
6602 1.1 jonathan len = sizeof(struct sadb_msg) + alen + elen;
6603 1.1 jonathan
6604 1.1 jonathan if (len > MCLBYTES)
6605 1.1 jonathan return key_senderror(so, m, ENOBUFS);
6606 1.1 jonathan
6607 1.1 jonathan MGETHDR(n, M_DONTWAIT, MT_DATA);
6608 1.1 jonathan if (len > MHLEN) {
6609 1.1 jonathan MCLGET(n, M_DONTWAIT);
6610 1.1 jonathan if ((n->m_flags & M_EXT) == 0) {
6611 1.1 jonathan m_freem(n);
6612 1.1 jonathan n = NULL;
6613 1.1 jonathan }
6614 1.1 jonathan }
6615 1.1 jonathan if (!n)
6616 1.1 jonathan return key_senderror(so, m, ENOBUFS);
6617 1.1 jonathan
6618 1.1 jonathan n->m_pkthdr.len = n->m_len = len;
6619 1.1 jonathan n->m_next = NULL;
6620 1.1 jonathan off = 0;
6621 1.1 jonathan
6622 1.39 degroote m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, char *) + off);
6623 1.1 jonathan newmsg = mtod(n, struct sadb_msg *);
6624 1.1 jonathan newmsg->sadb_msg_errno = 0;
6625 1.1 jonathan newmsg->sadb_msg_len = PFKEY_UNIT64(len);
6626 1.1 jonathan off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
6627 1.1 jonathan
6628 1.1 jonathan /* for authentication algorithm */
6629 1.1 jonathan if (alen) {
6630 1.39 degroote sup = (struct sadb_supported *)(mtod(n, char *) + off);
6631 1.1 jonathan sup->sadb_supported_len = PFKEY_UNIT64(alen);
6632 1.1 jonathan sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_AUTH;
6633 1.1 jonathan off += PFKEY_ALIGN8(sizeof(*sup));
6634 1.1 jonathan
6635 1.1 jonathan for (i = 1; i <= SADB_AALG_MAX; i++) {
6636 1.1 jonathan struct auth_hash *aalgo;
6637 1.1 jonathan u_int16_t minkeysize, maxkeysize;
6638 1.1 jonathan
6639 1.1 jonathan aalgo = ah_algorithm_lookup(i);
6640 1.1 jonathan if (!aalgo)
6641 1.1 jonathan continue;
6642 1.39 degroote alg = (struct sadb_alg *)(mtod(n, char *) + off);
6643 1.1 jonathan alg->sadb_alg_id = i;
6644 1.1 jonathan alg->sadb_alg_ivlen = 0;
6645 1.1 jonathan key_getsizes_ah(aalgo, i, &minkeysize, &maxkeysize);
6646 1.1 jonathan alg->sadb_alg_minbits = _BITS(minkeysize);
6647 1.1 jonathan alg->sadb_alg_maxbits = _BITS(maxkeysize);
6648 1.1 jonathan off += PFKEY_ALIGN8(sizeof(*alg));
6649 1.1 jonathan }
6650 1.1 jonathan }
6651 1.1 jonathan
6652 1.1 jonathan /* for encryption algorithm */
6653 1.1 jonathan if (elen) {
6654 1.39 degroote sup = (struct sadb_supported *)(mtod(n, char *) + off);
6655 1.1 jonathan sup->sadb_supported_len = PFKEY_UNIT64(elen);
6656 1.1 jonathan sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_ENCRYPT;
6657 1.1 jonathan off += PFKEY_ALIGN8(sizeof(*sup));
6658 1.1 jonathan
6659 1.1 jonathan for (i = 1; i <= SADB_EALG_MAX; i++) {
6660 1.1 jonathan struct enc_xform *ealgo;
6661 1.1 jonathan
6662 1.1 jonathan ealgo = esp_algorithm_lookup(i);
6663 1.1 jonathan if (!ealgo)
6664 1.1 jonathan continue;
6665 1.39 degroote alg = (struct sadb_alg *)(mtod(n, char *) + off);
6666 1.1 jonathan alg->sadb_alg_id = i;
6667 1.1 jonathan alg->sadb_alg_ivlen = ealgo->blocksize;
6668 1.1 jonathan alg->sadb_alg_minbits = _BITS(ealgo->minkey);
6669 1.1 jonathan alg->sadb_alg_maxbits = _BITS(ealgo->maxkey);
6670 1.1 jonathan off += PFKEY_ALIGN8(sizeof(struct sadb_alg));
6671 1.1 jonathan }
6672 1.1 jonathan }
6673 1.1 jonathan
6674 1.24 christos #ifdef DIAGNOSTIC
6675 1.1 jonathan if (off != len)
6676 1.1 jonathan panic("length assumption failed in key_register");
6677 1.1 jonathan #endif
6678 1.1 jonathan
6679 1.1 jonathan m_freem(m);
6680 1.1 jonathan return key_sendup_mbuf(so, n, KEY_SENDUP_REGISTERED);
6681 1.1 jonathan }
6682 1.1 jonathan }
6683 1.1 jonathan
6684 1.1 jonathan /*
6685 1.1 jonathan * free secreg entry registered.
6686 1.1 jonathan * XXX: I want to do free a socket marked done SADB_RESIGER to socket.
6687 1.1 jonathan */
6688 1.1 jonathan void
6689 1.49 degroote key_freereg(struct socket *so)
6690 1.1 jonathan {
6691 1.1 jonathan struct secreg *reg;
6692 1.1 jonathan int i;
6693 1.1 jonathan
6694 1.1 jonathan /* sanity check */
6695 1.1 jonathan if (so == NULL)
6696 1.24 christos panic("key_freereg: NULL pointer is passed");
6697 1.1 jonathan
6698 1.1 jonathan /*
6699 1.1 jonathan * check whether existing or not.
6700 1.1 jonathan * check all type of SA, because there is a potential that
6701 1.1 jonathan * one socket is registered to multiple type of SA.
6702 1.1 jonathan */
6703 1.1 jonathan for (i = 0; i <= SADB_SATYPE_MAX; i++) {
6704 1.1 jonathan LIST_FOREACH(reg, ®tree[i], chain) {
6705 1.1 jonathan if (reg->so == so
6706 1.1 jonathan && __LIST_CHAINED(reg)) {
6707 1.1 jonathan LIST_REMOVE(reg, chain);
6708 1.1 jonathan KFREE(reg);
6709 1.1 jonathan break;
6710 1.1 jonathan }
6711 1.1 jonathan }
6712 1.1 jonathan }
6713 1.22 perry
6714 1.1 jonathan return;
6715 1.1 jonathan }
6716 1.1 jonathan
6717 1.1 jonathan /*
6718 1.1 jonathan * SADB_EXPIRE processing
6719 1.1 jonathan * send
6720 1.1 jonathan * <base, SA, SA2, lifetime(C and one of HS), address(SD)>
6721 1.1 jonathan * to KMD by PF_KEY.
6722 1.1 jonathan * NOTE: We send only soft lifetime extension.
6723 1.1 jonathan *
6724 1.1 jonathan * OUT: 0 : succeed
6725 1.1 jonathan * others : error number
6726 1.1 jonathan */
6727 1.1 jonathan static int
6728 1.49 degroote key_expire(struct secasvar *sav)
6729 1.1 jonathan {
6730 1.1 jonathan int s;
6731 1.1 jonathan int satype;
6732 1.1 jonathan struct mbuf *result = NULL, *m;
6733 1.1 jonathan int len;
6734 1.1 jonathan int error = -1;
6735 1.1 jonathan struct sadb_lifetime *lt;
6736 1.1 jonathan
6737 1.1 jonathan /* XXX: Why do we lock ? */
6738 1.1 jonathan s = splsoftnet(); /*called from softclock()*/
6739 1.1 jonathan
6740 1.1 jonathan /* sanity check */
6741 1.1 jonathan if (sav == NULL)
6742 1.24 christos panic("key_expire: NULL pointer is passed");
6743 1.1 jonathan if (sav->sah == NULL)
6744 1.24 christos panic("key_expire: Why was SA index in SA NULL");
6745 1.1 jonathan if ((satype = key_proto2satype(sav->sah->saidx.proto)) == 0)
6746 1.24 christos panic("key_expire: invalid proto is passed");
6747 1.1 jonathan
6748 1.1 jonathan /* set msg header */
6749 1.1 jonathan m = key_setsadbmsg(SADB_EXPIRE, 0, satype, sav->seq, 0, sav->refcnt);
6750 1.1 jonathan if (!m) {
6751 1.1 jonathan error = ENOBUFS;
6752 1.1 jonathan goto fail;
6753 1.1 jonathan }
6754 1.1 jonathan result = m;
6755 1.1 jonathan
6756 1.1 jonathan /* create SA extension */
6757 1.1 jonathan m = key_setsadbsa(sav);
6758 1.1 jonathan if (!m) {
6759 1.1 jonathan error = ENOBUFS;
6760 1.1 jonathan goto fail;
6761 1.1 jonathan }
6762 1.1 jonathan m_cat(result, m);
6763 1.1 jonathan
6764 1.1 jonathan /* create SA extension */
6765 1.1 jonathan m = key_setsadbxsa2(sav->sah->saidx.mode,
6766 1.1 jonathan sav->replay ? sav->replay->count : 0,
6767 1.1 jonathan sav->sah->saidx.reqid);
6768 1.1 jonathan if (!m) {
6769 1.1 jonathan error = ENOBUFS;
6770 1.1 jonathan goto fail;
6771 1.1 jonathan }
6772 1.1 jonathan m_cat(result, m);
6773 1.1 jonathan
6774 1.1 jonathan /* create lifetime extension (current and soft) */
6775 1.1 jonathan len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
6776 1.1 jonathan m = key_alloc_mbuf(len);
6777 1.1 jonathan if (!m || m->m_next) { /*XXX*/
6778 1.1 jonathan if (m)
6779 1.1 jonathan m_freem(m);
6780 1.1 jonathan error = ENOBUFS;
6781 1.1 jonathan goto fail;
6782 1.1 jonathan }
6783 1.49 degroote memset(mtod(m, void *), 0, len);
6784 1.1 jonathan lt = mtod(m, struct sadb_lifetime *);
6785 1.1 jonathan lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
6786 1.1 jonathan lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
6787 1.1 jonathan lt->sadb_lifetime_allocations = sav->lft_c->sadb_lifetime_allocations;
6788 1.1 jonathan lt->sadb_lifetime_bytes = sav->lft_c->sadb_lifetime_bytes;
6789 1.1 jonathan lt->sadb_lifetime_addtime = sav->lft_c->sadb_lifetime_addtime;
6790 1.1 jonathan lt->sadb_lifetime_usetime = sav->lft_c->sadb_lifetime_usetime;
6791 1.39 degroote lt = (struct sadb_lifetime *)(mtod(m, char *) + len / 2);
6792 1.49 degroote memcpy(lt, sav->lft_s, sizeof(*lt));
6793 1.1 jonathan m_cat(result, m);
6794 1.1 jonathan
6795 1.1 jonathan /* set sadb_address for source */
6796 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
6797 1.1 jonathan &sav->sah->saidx.src.sa,
6798 1.1 jonathan FULLMASK, IPSEC_ULPROTO_ANY);
6799 1.1 jonathan if (!m) {
6800 1.1 jonathan error = ENOBUFS;
6801 1.1 jonathan goto fail;
6802 1.1 jonathan }
6803 1.1 jonathan m_cat(result, m);
6804 1.1 jonathan
6805 1.1 jonathan /* set sadb_address for destination */
6806 1.1 jonathan m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
6807 1.1 jonathan &sav->sah->saidx.dst.sa,
6808 1.1 jonathan FULLMASK, IPSEC_ULPROTO_ANY);
6809 1.1 jonathan if (!m) {
6810 1.1 jonathan error = ENOBUFS;
6811 1.1 jonathan goto fail;
6812 1.1 jonathan }
6813 1.1 jonathan m_cat(result, m);
6814 1.1 jonathan
6815 1.1 jonathan if ((result->m_flags & M_PKTHDR) == 0) {
6816 1.1 jonathan error = EINVAL;
6817 1.1 jonathan goto fail;
6818 1.1 jonathan }
6819 1.1 jonathan
6820 1.1 jonathan if (result->m_len < sizeof(struct sadb_msg)) {
6821 1.1 jonathan result = m_pullup(result, sizeof(struct sadb_msg));
6822 1.1 jonathan if (result == NULL) {
6823 1.1 jonathan error = ENOBUFS;
6824 1.1 jonathan goto fail;
6825 1.1 jonathan }
6826 1.1 jonathan }
6827 1.1 jonathan
6828 1.1 jonathan result->m_pkthdr.len = 0;
6829 1.1 jonathan for (m = result; m; m = m->m_next)
6830 1.1 jonathan result->m_pkthdr.len += m->m_len;
6831 1.1 jonathan
6832 1.1 jonathan mtod(result, struct sadb_msg *)->sadb_msg_len =
6833 1.1 jonathan PFKEY_UNIT64(result->m_pkthdr.len);
6834 1.1 jonathan
6835 1.1 jonathan splx(s);
6836 1.1 jonathan return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
6837 1.1 jonathan
6838 1.1 jonathan fail:
6839 1.1 jonathan if (result)
6840 1.1 jonathan m_freem(result);
6841 1.1 jonathan splx(s);
6842 1.1 jonathan return error;
6843 1.1 jonathan }
6844 1.1 jonathan
6845 1.1 jonathan /*
6846 1.1 jonathan * SADB_FLUSH processing
6847 1.1 jonathan * receive
6848 1.1 jonathan * <base>
6849 1.1 jonathan * from the ikmpd, and free all entries in secastree.
6850 1.1 jonathan * and send,
6851 1.1 jonathan * <base>
6852 1.1 jonathan * to the ikmpd.
6853 1.1 jonathan * NOTE: to do is only marking SADB_SASTATE_DEAD.
6854 1.1 jonathan *
6855 1.1 jonathan * m will always be freed.
6856 1.1 jonathan */
6857 1.1 jonathan static int
6858 1.49 degroote key_flush(struct socket *so, struct mbuf *m,
6859 1.49 degroote const struct sadb_msghdr *mhp)
6860 1.1 jonathan {
6861 1.1 jonathan struct sadb_msg *newmsg;
6862 1.1 jonathan struct secashead *sah, *nextsah;
6863 1.1 jonathan struct secasvar *sav, *nextsav;
6864 1.1 jonathan u_int16_t proto;
6865 1.1 jonathan u_int8_t state;
6866 1.1 jonathan u_int stateidx;
6867 1.1 jonathan
6868 1.1 jonathan /* sanity check */
6869 1.1 jonathan if (so == NULL || mhp == NULL || mhp->msg == NULL)
6870 1.24 christos panic("key_flush: NULL pointer is passed");
6871 1.1 jonathan
6872 1.1 jonathan /* map satype to proto */
6873 1.1 jonathan if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
6874 1.1 jonathan ipseclog((LOG_DEBUG, "key_flush: invalid satype is passed.\n"));
6875 1.1 jonathan return key_senderror(so, m, EINVAL);
6876 1.1 jonathan }
6877 1.1 jonathan
6878 1.1 jonathan /* no SATYPE specified, i.e. flushing all SA. */
6879 1.1 jonathan for (sah = LIST_FIRST(&sahtree);
6880 1.1 jonathan sah != NULL;
6881 1.1 jonathan sah = nextsah) {
6882 1.1 jonathan nextsah = LIST_NEXT(sah, chain);
6883 1.1 jonathan
6884 1.1 jonathan if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC
6885 1.1 jonathan && proto != sah->saidx.proto)
6886 1.1 jonathan continue;
6887 1.1 jonathan
6888 1.1 jonathan for (stateidx = 0;
6889 1.1 jonathan stateidx < _ARRAYLEN(saorder_state_alive);
6890 1.1 jonathan stateidx++) {
6891 1.1 jonathan state = saorder_state_any[stateidx];
6892 1.1 jonathan for (sav = LIST_FIRST(&sah->savtree[state]);
6893 1.1 jonathan sav != NULL;
6894 1.1 jonathan sav = nextsav) {
6895 1.1 jonathan
6896 1.1 jonathan nextsav = LIST_NEXT(sav, chain);
6897 1.1 jonathan
6898 1.1 jonathan key_sa_chgstate(sav, SADB_SASTATE_DEAD);
6899 1.1 jonathan KEY_FREESAV(&sav);
6900 1.1 jonathan }
6901 1.1 jonathan }
6902 1.1 jonathan
6903 1.1 jonathan sah->state = SADB_SASTATE_DEAD;
6904 1.1 jonathan }
6905 1.1 jonathan
6906 1.1 jonathan if (m->m_len < sizeof(struct sadb_msg) ||
6907 1.1 jonathan sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
6908 1.1 jonathan ipseclog((LOG_DEBUG, "key_flush: No more memory.\n"));
6909 1.1 jonathan return key_senderror(so, m, ENOBUFS);
6910 1.1 jonathan }
6911 1.1 jonathan
6912 1.1 jonathan if (m->m_next)
6913 1.1 jonathan m_freem(m->m_next);
6914 1.1 jonathan m->m_next = NULL;
6915 1.1 jonathan m->m_pkthdr.len = m->m_len = sizeof(struct sadb_msg);
6916 1.1 jonathan newmsg = mtod(m, struct sadb_msg *);
6917 1.1 jonathan newmsg->sadb_msg_errno = 0;
6918 1.1 jonathan newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
6919 1.1 jonathan
6920 1.1 jonathan return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
6921 1.1 jonathan }
6922 1.1 jonathan
6923 1.19 jonathan
6924 1.19 jonathan static struct mbuf *
6925 1.20 jonathan key_setdump_chain(u_int8_t req_satype, int *errorp, int *lenp, pid_t pid)
6926 1.1 jonathan {
6927 1.1 jonathan struct secashead *sah;
6928 1.1 jonathan struct secasvar *sav;
6929 1.1 jonathan u_int16_t proto;
6930 1.1 jonathan u_int stateidx;
6931 1.1 jonathan u_int8_t satype;
6932 1.1 jonathan u_int8_t state;
6933 1.1 jonathan int cnt;
6934 1.19 jonathan struct mbuf *m, *n, *prev;
6935 1.19 jonathan int totlen;
6936 1.1 jonathan
6937 1.19 jonathan *lenp = 0;
6938 1.1 jonathan
6939 1.1 jonathan /* map satype to proto */
6940 1.19 jonathan if ((proto = key_satype2proto(req_satype)) == 0) {
6941 1.19 jonathan *errorp = EINVAL;
6942 1.19 jonathan return (NULL);
6943 1.1 jonathan }
6944 1.1 jonathan
6945 1.19 jonathan /* count sav entries to be sent to userland. */
6946 1.1 jonathan cnt = 0;
6947 1.1 jonathan LIST_FOREACH(sah, &sahtree, chain) {
6948 1.19 jonathan if (req_satype != SADB_SATYPE_UNSPEC &&
6949 1.19 jonathan proto != sah->saidx.proto)
6950 1.1 jonathan continue;
6951 1.1 jonathan
6952 1.1 jonathan for (stateidx = 0;
6953 1.1 jonathan stateidx < _ARRAYLEN(saorder_state_any);
6954 1.1 jonathan stateidx++) {
6955 1.1 jonathan state = saorder_state_any[stateidx];
6956 1.1 jonathan LIST_FOREACH(sav, &sah->savtree[state], chain) {
6957 1.1 jonathan cnt++;
6958 1.1 jonathan }
6959 1.1 jonathan }
6960 1.1 jonathan }
6961 1.1 jonathan
6962 1.19 jonathan if (cnt == 0) {
6963 1.19 jonathan *errorp = ENOENT;
6964 1.19 jonathan return (NULL);
6965 1.19 jonathan }
6966 1.1 jonathan
6967 1.1 jonathan /* send this to the userland, one at a time. */
6968 1.19 jonathan m = NULL;
6969 1.19 jonathan prev = m;
6970 1.1 jonathan LIST_FOREACH(sah, &sahtree, chain) {
6971 1.19 jonathan if (req_satype != SADB_SATYPE_UNSPEC &&
6972 1.19 jonathan proto != sah->saidx.proto)
6973 1.1 jonathan continue;
6974 1.1 jonathan
6975 1.1 jonathan /* map proto to satype */
6976 1.1 jonathan if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
6977 1.19 jonathan m_freem(m);
6978 1.19 jonathan *errorp = EINVAL;
6979 1.19 jonathan return (NULL);
6980 1.1 jonathan }
6981 1.1 jonathan
6982 1.1 jonathan for (stateidx = 0;
6983 1.1 jonathan stateidx < _ARRAYLEN(saorder_state_any);
6984 1.1 jonathan stateidx++) {
6985 1.1 jonathan state = saorder_state_any[stateidx];
6986 1.1 jonathan LIST_FOREACH(sav, &sah->savtree[state], chain) {
6987 1.1 jonathan n = key_setdumpsa(sav, SADB_DUMP, satype,
6988 1.20 jonathan --cnt, pid);
6989 1.19 jonathan if (!n) {
6990 1.19 jonathan m_freem(m);
6991 1.19 jonathan *errorp = ENOBUFS;
6992 1.19 jonathan return (NULL);
6993 1.19 jonathan }
6994 1.1 jonathan
6995 1.19 jonathan totlen += n->m_pkthdr.len;
6996 1.19 jonathan if (!m)
6997 1.19 jonathan m = n;
6998 1.19 jonathan else
6999 1.19 jonathan prev->m_nextpkt = n;
7000 1.19 jonathan prev = n;
7001 1.1 jonathan }
7002 1.1 jonathan }
7003 1.1 jonathan }
7004 1.1 jonathan
7005 1.19 jonathan if (!m) {
7006 1.19 jonathan *errorp = EINVAL;
7007 1.19 jonathan return (NULL);
7008 1.19 jonathan }
7009 1.19 jonathan
7010 1.19 jonathan if ((m->m_flags & M_PKTHDR) != 0) {
7011 1.19 jonathan m->m_pkthdr.len = 0;
7012 1.19 jonathan for (n = m; n; n = n->m_next)
7013 1.19 jonathan m->m_pkthdr.len += n->m_len;
7014 1.19 jonathan }
7015 1.19 jonathan
7016 1.19 jonathan *errorp = 0;
7017 1.19 jonathan return (m);
7018 1.19 jonathan }
7019 1.19 jonathan
7020 1.19 jonathan /*
7021 1.19 jonathan * SADB_DUMP processing
7022 1.19 jonathan * dump all entries including status of DEAD in SAD.
7023 1.19 jonathan * receive
7024 1.19 jonathan * <base>
7025 1.19 jonathan * from the ikmpd, and dump all secasvar leaves
7026 1.19 jonathan * and send,
7027 1.19 jonathan * <base> .....
7028 1.19 jonathan * to the ikmpd.
7029 1.19 jonathan *
7030 1.19 jonathan * m will always be freed.
7031 1.19 jonathan */
7032 1.19 jonathan static int
7033 1.49 degroote key_dump(struct socket *so, struct mbuf *m0,
7034 1.49 degroote const struct sadb_msghdr *mhp)
7035 1.19 jonathan {
7036 1.19 jonathan u_int16_t proto;
7037 1.19 jonathan u_int8_t satype;
7038 1.19 jonathan struct mbuf *n;
7039 1.19 jonathan int s;
7040 1.19 jonathan int error, len, ok;
7041 1.19 jonathan
7042 1.19 jonathan /* sanity check */
7043 1.19 jonathan if (so == NULL || m0 == NULL || mhp == NULL || mhp->msg == NULL)
7044 1.24 christos panic("key_dump: NULL pointer is passed");
7045 1.19 jonathan
7046 1.19 jonathan /* map satype to proto */
7047 1.19 jonathan satype = mhp->msg->sadb_msg_satype;
7048 1.19 jonathan if ((proto = key_satype2proto(satype)) == 0) {
7049 1.19 jonathan ipseclog((LOG_DEBUG, "key_dump: invalid satype is passed.\n"));
7050 1.19 jonathan return key_senderror(so, m0, EINVAL);
7051 1.19 jonathan }
7052 1.19 jonathan
7053 1.19 jonathan /*
7054 1.19 jonathan * If the requestor has insufficient socket-buffer space
7055 1.19 jonathan * for the entire chain, nobody gets any response to the DUMP.
7056 1.19 jonathan * XXX For now, only the requestor ever gets anything.
7057 1.19 jonathan * Moreover, if the requestor has any space at all, they receive
7058 1.19 jonathan * the entire chain, otherwise the request is refused with ENOBUFS.
7059 1.19 jonathan */
7060 1.19 jonathan if (sbspace(&so->so_rcv) <= 0) {
7061 1.19 jonathan return key_senderror(so, m0, ENOBUFS);
7062 1.19 jonathan }
7063 1.19 jonathan
7064 1.19 jonathan s = splsoftnet();
7065 1.20 jonathan n = key_setdump_chain(satype, &error, &len, mhp->msg->sadb_msg_pid);
7066 1.19 jonathan splx(s);
7067 1.19 jonathan
7068 1.19 jonathan if (n == NULL) {
7069 1.19 jonathan return key_senderror(so, m0, ENOENT);
7070 1.19 jonathan }
7071 1.52 thorpej {
7072 1.52 thorpej uint64_t *ps = PFKEY_STAT_GETREF();
7073 1.52 thorpej ps[PFKEY_STAT_IN_TOTAL]++;
7074 1.52 thorpej ps[PFKEY_STAT_IN_BYTES] += len;
7075 1.52 thorpej PFKEY_STAT_PUTREF();
7076 1.52 thorpej }
7077 1.19 jonathan
7078 1.19 jonathan /*
7079 1.19 jonathan * PF_KEY DUMP responses are no longer broadcast to all PF_KEY sockets.
7080 1.19 jonathan * The requestor receives either the entire chain, or an
7081 1.19 jonathan * error message with ENOBUFS.
7082 1.19 jonathan *
7083 1.19 jonathan * sbappendaddrchain() takes the chain of entries, one
7084 1.19 jonathan * packet-record per SPD entry, prepends the key_src sockaddr
7085 1.19 jonathan * to each packet-record, links the sockaddr mbufs into a new
7086 1.19 jonathan * list of records, then appends the entire resulting
7087 1.19 jonathan * list to the requesting socket.
7088 1.19 jonathan */
7089 1.19 jonathan ok = sbappendaddrchain(&so->so_rcv, (struct sockaddr *)&key_src,
7090 1.19 jonathan n, SB_PRIO_ONESHOT_OVERFLOW);
7091 1.19 jonathan
7092 1.19 jonathan if (!ok) {
7093 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_IN_NOMEM);
7094 1.19 jonathan m_freem(n);
7095 1.19 jonathan return key_senderror(so, m0, ENOBUFS);
7096 1.19 jonathan }
7097 1.19 jonathan
7098 1.19 jonathan m_freem(m0);
7099 1.1 jonathan return 0;
7100 1.1 jonathan }
7101 1.1 jonathan
7102 1.1 jonathan /*
7103 1.1 jonathan * SADB_X_PROMISC processing
7104 1.1 jonathan *
7105 1.1 jonathan * m will always be freed.
7106 1.1 jonathan */
7107 1.1 jonathan static int
7108 1.49 degroote key_promisc(struct socket *so, struct mbuf *m,
7109 1.49 degroote const struct sadb_msghdr *mhp)
7110 1.1 jonathan {
7111 1.1 jonathan int olen;
7112 1.1 jonathan
7113 1.1 jonathan /* sanity check */
7114 1.1 jonathan if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
7115 1.24 christos panic("key_promisc: NULL pointer is passed");
7116 1.1 jonathan
7117 1.1 jonathan olen = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
7118 1.1 jonathan
7119 1.1 jonathan if (olen < sizeof(struct sadb_msg)) {
7120 1.1 jonathan #if 1
7121 1.1 jonathan return key_senderror(so, m, EINVAL);
7122 1.1 jonathan #else
7123 1.1 jonathan m_freem(m);
7124 1.1 jonathan return 0;
7125 1.1 jonathan #endif
7126 1.1 jonathan } else if (olen == sizeof(struct sadb_msg)) {
7127 1.1 jonathan /* enable/disable promisc mode */
7128 1.1 jonathan struct keycb *kp;
7129 1.1 jonathan
7130 1.1 jonathan if ((kp = (struct keycb *)sotorawcb(so)) == NULL)
7131 1.1 jonathan return key_senderror(so, m, EINVAL);
7132 1.1 jonathan mhp->msg->sadb_msg_errno = 0;
7133 1.1 jonathan switch (mhp->msg->sadb_msg_satype) {
7134 1.1 jonathan case 0:
7135 1.1 jonathan case 1:
7136 1.1 jonathan kp->kp_promisc = mhp->msg->sadb_msg_satype;
7137 1.1 jonathan break;
7138 1.1 jonathan default:
7139 1.1 jonathan return key_senderror(so, m, EINVAL);
7140 1.1 jonathan }
7141 1.1 jonathan
7142 1.1 jonathan /* send the original message back to everyone */
7143 1.1 jonathan mhp->msg->sadb_msg_errno = 0;
7144 1.1 jonathan return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
7145 1.1 jonathan } else {
7146 1.1 jonathan /* send packet as is */
7147 1.1 jonathan
7148 1.1 jonathan m_adj(m, PFKEY_ALIGN8(sizeof(struct sadb_msg)));
7149 1.1 jonathan
7150 1.1 jonathan /* TODO: if sadb_msg_seq is specified, send to specific pid */
7151 1.1 jonathan return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
7152 1.1 jonathan }
7153 1.1 jonathan }
7154 1.1 jonathan
7155 1.49 degroote static int (*key_typesw[]) (struct socket *, struct mbuf *,
7156 1.49 degroote const struct sadb_msghdr *) = {
7157 1.1 jonathan NULL, /* SADB_RESERVED */
7158 1.1 jonathan key_getspi, /* SADB_GETSPI */
7159 1.1 jonathan key_update, /* SADB_UPDATE */
7160 1.1 jonathan key_add, /* SADB_ADD */
7161 1.1 jonathan key_delete, /* SADB_DELETE */
7162 1.1 jonathan key_get, /* SADB_GET */
7163 1.1 jonathan key_acquire2, /* SADB_ACQUIRE */
7164 1.1 jonathan key_register, /* SADB_REGISTER */
7165 1.1 jonathan NULL, /* SADB_EXPIRE */
7166 1.1 jonathan key_flush, /* SADB_FLUSH */
7167 1.1 jonathan key_dump, /* SADB_DUMP */
7168 1.1 jonathan key_promisc, /* SADB_X_PROMISC */
7169 1.1 jonathan NULL, /* SADB_X_PCHANGE */
7170 1.1 jonathan key_spdadd, /* SADB_X_SPDUPDATE */
7171 1.1 jonathan key_spdadd, /* SADB_X_SPDADD */
7172 1.1 jonathan key_spddelete, /* SADB_X_SPDDELETE */
7173 1.1 jonathan key_spdget, /* SADB_X_SPDGET */
7174 1.1 jonathan NULL, /* SADB_X_SPDACQUIRE */
7175 1.1 jonathan key_spddump, /* SADB_X_SPDDUMP */
7176 1.1 jonathan key_spdflush, /* SADB_X_SPDFLUSH */
7177 1.1 jonathan key_spdadd, /* SADB_X_SPDSETIDX */
7178 1.1 jonathan NULL, /* SADB_X_SPDEXPIRE */
7179 1.1 jonathan key_spddelete2, /* SADB_X_SPDDELETE2 */
7180 1.48 degroote #ifdef IPSEC_NAT_T
7181 1.48 degroote key_nat_map, /* SADB_X_NAT_T_NEW_MAPPING */
7182 1.48 degroote #endif
7183 1.1 jonathan };
7184 1.1 jonathan
7185 1.1 jonathan /*
7186 1.1 jonathan * parse sadb_msg buffer to process PFKEYv2,
7187 1.1 jonathan * and create a data to response if needed.
7188 1.1 jonathan * I think to be dealed with mbuf directly.
7189 1.1 jonathan * IN:
7190 1.1 jonathan * msgp : pointer to pointer to a received buffer pulluped.
7191 1.1 jonathan * This is rewrited to response.
7192 1.1 jonathan * so : pointer to socket.
7193 1.1 jonathan * OUT:
7194 1.1 jonathan * length for buffer to send to user process.
7195 1.1 jonathan */
7196 1.1 jonathan int
7197 1.49 degroote key_parse(struct mbuf *m, struct socket *so)
7198 1.1 jonathan {
7199 1.1 jonathan struct sadb_msg *msg;
7200 1.1 jonathan struct sadb_msghdr mh;
7201 1.1 jonathan u_int orglen;
7202 1.1 jonathan int error;
7203 1.1 jonathan int target;
7204 1.1 jonathan
7205 1.1 jonathan /* sanity check */
7206 1.1 jonathan if (m == NULL || so == NULL)
7207 1.24 christos panic("key_parse: NULL pointer is passed");
7208 1.1 jonathan
7209 1.1 jonathan #if 0 /*kdebug_sadb assumes msg in linear buffer*/
7210 1.1 jonathan KEYDEBUG(KEYDEBUG_KEY_DUMP,
7211 1.1 jonathan ipseclog((LOG_DEBUG, "key_parse: passed sadb_msg\n"));
7212 1.1 jonathan kdebug_sadb(msg));
7213 1.1 jonathan #endif
7214 1.1 jonathan
7215 1.1 jonathan if (m->m_len < sizeof(struct sadb_msg)) {
7216 1.1 jonathan m = m_pullup(m, sizeof(struct sadb_msg));
7217 1.1 jonathan if (!m)
7218 1.1 jonathan return ENOBUFS;
7219 1.1 jonathan }
7220 1.1 jonathan msg = mtod(m, struct sadb_msg *);
7221 1.1 jonathan orglen = PFKEY_UNUNIT64(msg->sadb_msg_len);
7222 1.1 jonathan target = KEY_SENDUP_ONE;
7223 1.1 jonathan
7224 1.1 jonathan if ((m->m_flags & M_PKTHDR) == 0 ||
7225 1.1 jonathan m->m_pkthdr.len != m->m_pkthdr.len) {
7226 1.1 jonathan ipseclog((LOG_DEBUG, "key_parse: invalid message length.\n"));
7227 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVLEN);
7228 1.1 jonathan error = EINVAL;
7229 1.1 jonathan goto senderror;
7230 1.1 jonathan }
7231 1.1 jonathan
7232 1.1 jonathan if (msg->sadb_msg_version != PF_KEY_V2) {
7233 1.1 jonathan ipseclog((LOG_DEBUG,
7234 1.1 jonathan "key_parse: PF_KEY version %u is mismatched.\n",
7235 1.1 jonathan msg->sadb_msg_version));
7236 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVVER);
7237 1.1 jonathan error = EINVAL;
7238 1.1 jonathan goto senderror;
7239 1.1 jonathan }
7240 1.1 jonathan
7241 1.1 jonathan if (msg->sadb_msg_type > SADB_MAX) {
7242 1.1 jonathan ipseclog((LOG_DEBUG, "key_parse: invalid type %u is passed.\n",
7243 1.1 jonathan msg->sadb_msg_type));
7244 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVMSGTYPE);
7245 1.1 jonathan error = EINVAL;
7246 1.1 jonathan goto senderror;
7247 1.1 jonathan }
7248 1.1 jonathan
7249 1.1 jonathan /* for old-fashioned code - should be nuked */
7250 1.1 jonathan if (m->m_pkthdr.len > MCLBYTES) {
7251 1.1 jonathan m_freem(m);
7252 1.1 jonathan return ENOBUFS;
7253 1.1 jonathan }
7254 1.1 jonathan if (m->m_next) {
7255 1.1 jonathan struct mbuf *n;
7256 1.1 jonathan
7257 1.1 jonathan MGETHDR(n, M_DONTWAIT, MT_DATA);
7258 1.1 jonathan if (n && m->m_pkthdr.len > MHLEN) {
7259 1.1 jonathan MCLGET(n, M_DONTWAIT);
7260 1.1 jonathan if ((n->m_flags & M_EXT) == 0) {
7261 1.1 jonathan m_free(n);
7262 1.1 jonathan n = NULL;
7263 1.1 jonathan }
7264 1.1 jonathan }
7265 1.1 jonathan if (!n) {
7266 1.1 jonathan m_freem(m);
7267 1.1 jonathan return ENOBUFS;
7268 1.1 jonathan }
7269 1.38 christos m_copydata(m, 0, m->m_pkthdr.len, mtod(n, void *));
7270 1.1 jonathan n->m_pkthdr.len = n->m_len = m->m_pkthdr.len;
7271 1.1 jonathan n->m_next = NULL;
7272 1.1 jonathan m_freem(m);
7273 1.1 jonathan m = n;
7274 1.1 jonathan }
7275 1.1 jonathan
7276 1.1 jonathan /* align the mbuf chain so that extensions are in contiguous region. */
7277 1.1 jonathan error = key_align(m, &mh);
7278 1.1 jonathan if (error)
7279 1.1 jonathan return error;
7280 1.1 jonathan
7281 1.1 jonathan if (m->m_next) { /*XXX*/
7282 1.1 jonathan m_freem(m);
7283 1.1 jonathan return ENOBUFS;
7284 1.1 jonathan }
7285 1.1 jonathan
7286 1.1 jonathan msg = mh.msg;
7287 1.1 jonathan
7288 1.1 jonathan /* check SA type */
7289 1.1 jonathan switch (msg->sadb_msg_satype) {
7290 1.1 jonathan case SADB_SATYPE_UNSPEC:
7291 1.1 jonathan switch (msg->sadb_msg_type) {
7292 1.1 jonathan case SADB_GETSPI:
7293 1.1 jonathan case SADB_UPDATE:
7294 1.1 jonathan case SADB_ADD:
7295 1.1 jonathan case SADB_DELETE:
7296 1.1 jonathan case SADB_GET:
7297 1.1 jonathan case SADB_ACQUIRE:
7298 1.1 jonathan case SADB_EXPIRE:
7299 1.1 jonathan ipseclog((LOG_DEBUG, "key_parse: must specify satype "
7300 1.1 jonathan "when msg type=%u.\n", msg->sadb_msg_type));
7301 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVSATYPE);
7302 1.1 jonathan error = EINVAL;
7303 1.1 jonathan goto senderror;
7304 1.1 jonathan }
7305 1.1 jonathan break;
7306 1.1 jonathan case SADB_SATYPE_AH:
7307 1.1 jonathan case SADB_SATYPE_ESP:
7308 1.1 jonathan case SADB_X_SATYPE_IPCOMP:
7309 1.12 jonathan case SADB_X_SATYPE_TCPSIGNATURE:
7310 1.1 jonathan switch (msg->sadb_msg_type) {
7311 1.1 jonathan case SADB_X_SPDADD:
7312 1.1 jonathan case SADB_X_SPDDELETE:
7313 1.1 jonathan case SADB_X_SPDGET:
7314 1.1 jonathan case SADB_X_SPDDUMP:
7315 1.1 jonathan case SADB_X_SPDFLUSH:
7316 1.1 jonathan case SADB_X_SPDSETIDX:
7317 1.1 jonathan case SADB_X_SPDUPDATE:
7318 1.1 jonathan case SADB_X_SPDDELETE2:
7319 1.1 jonathan ipseclog((LOG_DEBUG, "key_parse: illegal satype=%u\n",
7320 1.1 jonathan msg->sadb_msg_type));
7321 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVSATYPE);
7322 1.1 jonathan error = EINVAL;
7323 1.1 jonathan goto senderror;
7324 1.1 jonathan }
7325 1.1 jonathan break;
7326 1.1 jonathan case SADB_SATYPE_RSVP:
7327 1.1 jonathan case SADB_SATYPE_OSPFV2:
7328 1.1 jonathan case SADB_SATYPE_RIPV2:
7329 1.1 jonathan case SADB_SATYPE_MIP:
7330 1.1 jonathan ipseclog((LOG_DEBUG, "key_parse: type %u isn't supported.\n",
7331 1.1 jonathan msg->sadb_msg_satype));
7332 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVSATYPE);
7333 1.1 jonathan error = EOPNOTSUPP;
7334 1.1 jonathan goto senderror;
7335 1.1 jonathan case 1: /* XXX: What does it do? */
7336 1.1 jonathan if (msg->sadb_msg_type == SADB_X_PROMISC)
7337 1.1 jonathan break;
7338 1.1 jonathan /*FALLTHROUGH*/
7339 1.1 jonathan default:
7340 1.1 jonathan ipseclog((LOG_DEBUG, "key_parse: invalid type %u is passed.\n",
7341 1.1 jonathan msg->sadb_msg_satype));
7342 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVSATYPE);
7343 1.1 jonathan error = EINVAL;
7344 1.1 jonathan goto senderror;
7345 1.1 jonathan }
7346 1.1 jonathan
7347 1.1 jonathan /* check field of upper layer protocol and address family */
7348 1.1 jonathan if (mh.ext[SADB_EXT_ADDRESS_SRC] != NULL
7349 1.1 jonathan && mh.ext[SADB_EXT_ADDRESS_DST] != NULL) {
7350 1.1 jonathan struct sadb_address *src0, *dst0;
7351 1.1 jonathan u_int plen;
7352 1.1 jonathan
7353 1.1 jonathan src0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_SRC]);
7354 1.1 jonathan dst0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_DST]);
7355 1.1 jonathan
7356 1.1 jonathan /* check upper layer protocol */
7357 1.1 jonathan if (src0->sadb_address_proto != dst0->sadb_address_proto) {
7358 1.1 jonathan ipseclog((LOG_DEBUG, "key_parse: upper layer protocol mismatched.\n"));
7359 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVADDR);
7360 1.1 jonathan error = EINVAL;
7361 1.1 jonathan goto senderror;
7362 1.1 jonathan }
7363 1.1 jonathan
7364 1.1 jonathan /* check family */
7365 1.1 jonathan if (PFKEY_ADDR_SADDR(src0)->sa_family !=
7366 1.1 jonathan PFKEY_ADDR_SADDR(dst0)->sa_family) {
7367 1.1 jonathan ipseclog((LOG_DEBUG, "key_parse: address family mismatched.\n"));
7368 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVADDR);
7369 1.1 jonathan error = EINVAL;
7370 1.1 jonathan goto senderror;
7371 1.1 jonathan }
7372 1.1 jonathan if (PFKEY_ADDR_SADDR(src0)->sa_len !=
7373 1.1 jonathan PFKEY_ADDR_SADDR(dst0)->sa_len) {
7374 1.1 jonathan ipseclog((LOG_DEBUG,
7375 1.1 jonathan "key_parse: address struct size mismatched.\n"));
7376 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVADDR);
7377 1.1 jonathan error = EINVAL;
7378 1.1 jonathan goto senderror;
7379 1.1 jonathan }
7380 1.1 jonathan
7381 1.1 jonathan switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
7382 1.1 jonathan case AF_INET:
7383 1.1 jonathan if (PFKEY_ADDR_SADDR(src0)->sa_len !=
7384 1.1 jonathan sizeof(struct sockaddr_in)) {
7385 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVADDR);
7386 1.1 jonathan error = EINVAL;
7387 1.1 jonathan goto senderror;
7388 1.1 jonathan }
7389 1.1 jonathan break;
7390 1.1 jonathan case AF_INET6:
7391 1.1 jonathan if (PFKEY_ADDR_SADDR(src0)->sa_len !=
7392 1.1 jonathan sizeof(struct sockaddr_in6)) {
7393 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVADDR);
7394 1.1 jonathan error = EINVAL;
7395 1.1 jonathan goto senderror;
7396 1.1 jonathan }
7397 1.1 jonathan break;
7398 1.1 jonathan default:
7399 1.1 jonathan ipseclog((LOG_DEBUG,
7400 1.1 jonathan "key_parse: unsupported address family.\n"));
7401 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVADDR);
7402 1.1 jonathan error = EAFNOSUPPORT;
7403 1.1 jonathan goto senderror;
7404 1.1 jonathan }
7405 1.1 jonathan
7406 1.1 jonathan switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
7407 1.1 jonathan case AF_INET:
7408 1.1 jonathan plen = sizeof(struct in_addr) << 3;
7409 1.1 jonathan break;
7410 1.1 jonathan case AF_INET6:
7411 1.1 jonathan plen = sizeof(struct in6_addr) << 3;
7412 1.1 jonathan break;
7413 1.1 jonathan default:
7414 1.1 jonathan plen = 0; /*fool gcc*/
7415 1.1 jonathan break;
7416 1.1 jonathan }
7417 1.1 jonathan
7418 1.1 jonathan /* check max prefix length */
7419 1.1 jonathan if (src0->sadb_address_prefixlen > plen ||
7420 1.1 jonathan dst0->sadb_address_prefixlen > plen) {
7421 1.1 jonathan ipseclog((LOG_DEBUG,
7422 1.1 jonathan "key_parse: illegal prefixlen.\n"));
7423 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVADDR);
7424 1.1 jonathan error = EINVAL;
7425 1.1 jonathan goto senderror;
7426 1.1 jonathan }
7427 1.1 jonathan
7428 1.1 jonathan /*
7429 1.1 jonathan * prefixlen == 0 is valid because there can be a case when
7430 1.1 jonathan * all addresses are matched.
7431 1.1 jonathan */
7432 1.1 jonathan }
7433 1.1 jonathan
7434 1.1 jonathan if (msg->sadb_msg_type >= sizeof(key_typesw)/sizeof(key_typesw[0]) ||
7435 1.1 jonathan key_typesw[msg->sadb_msg_type] == NULL) {
7436 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVMSGTYPE);
7437 1.1 jonathan error = EINVAL;
7438 1.1 jonathan goto senderror;
7439 1.1 jonathan }
7440 1.1 jonathan
7441 1.1 jonathan return (*key_typesw[msg->sadb_msg_type])(so, m, &mh);
7442 1.1 jonathan
7443 1.1 jonathan senderror:
7444 1.1 jonathan msg->sadb_msg_errno = error;
7445 1.1 jonathan return key_sendup_mbuf(so, m, target);
7446 1.1 jonathan }
7447 1.1 jonathan
7448 1.1 jonathan static int
7449 1.49 degroote key_senderror(struct socket *so, struct mbuf *m, int code)
7450 1.1 jonathan {
7451 1.1 jonathan struct sadb_msg *msg;
7452 1.1 jonathan
7453 1.1 jonathan if (m->m_len < sizeof(struct sadb_msg))
7454 1.1 jonathan panic("invalid mbuf passed to key_senderror");
7455 1.1 jonathan
7456 1.1 jonathan msg = mtod(m, struct sadb_msg *);
7457 1.1 jonathan msg->sadb_msg_errno = code;
7458 1.1 jonathan return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
7459 1.1 jonathan }
7460 1.1 jonathan
7461 1.1 jonathan /*
7462 1.1 jonathan * set the pointer to each header into message buffer.
7463 1.1 jonathan * m will be freed on error.
7464 1.1 jonathan * XXX larger-than-MCLBYTES extension?
7465 1.1 jonathan */
7466 1.1 jonathan static int
7467 1.49 degroote key_align(struct mbuf *m, struct sadb_msghdr *mhp)
7468 1.1 jonathan {
7469 1.1 jonathan struct mbuf *n;
7470 1.1 jonathan struct sadb_ext *ext;
7471 1.1 jonathan size_t off, end;
7472 1.1 jonathan int extlen;
7473 1.1 jonathan int toff;
7474 1.1 jonathan
7475 1.1 jonathan /* sanity check */
7476 1.1 jonathan if (m == NULL || mhp == NULL)
7477 1.24 christos panic("key_align: NULL pointer is passed");
7478 1.1 jonathan if (m->m_len < sizeof(struct sadb_msg))
7479 1.1 jonathan panic("invalid mbuf passed to key_align");
7480 1.1 jonathan
7481 1.1 jonathan /* initialize */
7482 1.49 degroote memset(mhp, 0, sizeof(*mhp));
7483 1.1 jonathan
7484 1.1 jonathan mhp->msg = mtod(m, struct sadb_msg *);
7485 1.1 jonathan mhp->ext[0] = (struct sadb_ext *)mhp->msg; /*XXX backward compat */
7486 1.1 jonathan
7487 1.1 jonathan end = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
7488 1.1 jonathan extlen = end; /*just in case extlen is not updated*/
7489 1.1 jonathan for (off = sizeof(struct sadb_msg); off < end; off += extlen) {
7490 1.1 jonathan n = m_pulldown(m, off, sizeof(struct sadb_ext), &toff);
7491 1.1 jonathan if (!n) {
7492 1.1 jonathan /* m is already freed */
7493 1.1 jonathan return ENOBUFS;
7494 1.1 jonathan }
7495 1.39 degroote ext = (struct sadb_ext *)(mtod(n, char *) + toff);
7496 1.1 jonathan
7497 1.1 jonathan /* set pointer */
7498 1.1 jonathan switch (ext->sadb_ext_type) {
7499 1.1 jonathan case SADB_EXT_SA:
7500 1.1 jonathan case SADB_EXT_ADDRESS_SRC:
7501 1.1 jonathan case SADB_EXT_ADDRESS_DST:
7502 1.1 jonathan case SADB_EXT_ADDRESS_PROXY:
7503 1.1 jonathan case SADB_EXT_LIFETIME_CURRENT:
7504 1.1 jonathan case SADB_EXT_LIFETIME_HARD:
7505 1.1 jonathan case SADB_EXT_LIFETIME_SOFT:
7506 1.1 jonathan case SADB_EXT_KEY_AUTH:
7507 1.1 jonathan case SADB_EXT_KEY_ENCRYPT:
7508 1.1 jonathan case SADB_EXT_IDENTITY_SRC:
7509 1.1 jonathan case SADB_EXT_IDENTITY_DST:
7510 1.1 jonathan case SADB_EXT_SENSITIVITY:
7511 1.1 jonathan case SADB_EXT_PROPOSAL:
7512 1.1 jonathan case SADB_EXT_SUPPORTED_AUTH:
7513 1.1 jonathan case SADB_EXT_SUPPORTED_ENCRYPT:
7514 1.1 jonathan case SADB_EXT_SPIRANGE:
7515 1.1 jonathan case SADB_X_EXT_POLICY:
7516 1.1 jonathan case SADB_X_EXT_SA2:
7517 1.48 degroote #ifdef IPSEC_NAT_T
7518 1.48 degroote case SADB_X_EXT_NAT_T_TYPE:
7519 1.48 degroote case SADB_X_EXT_NAT_T_SPORT:
7520 1.48 degroote case SADB_X_EXT_NAT_T_DPORT:
7521 1.48 degroote case SADB_X_EXT_NAT_T_OA:
7522 1.48 degroote case SADB_X_EXT_NAT_T_FRAG:
7523 1.48 degroote #endif
7524 1.1 jonathan /* duplicate check */
7525 1.1 jonathan /*
7526 1.1 jonathan * XXX Are there duplication payloads of either
7527 1.1 jonathan * KEY_AUTH or KEY_ENCRYPT ?
7528 1.1 jonathan */
7529 1.1 jonathan if (mhp->ext[ext->sadb_ext_type] != NULL) {
7530 1.1 jonathan ipseclog((LOG_DEBUG,
7531 1.1 jonathan "key_align: duplicate ext_type %u "
7532 1.1 jonathan "is passed.\n", ext->sadb_ext_type));
7533 1.1 jonathan m_freem(m);
7534 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_DUPEXT);
7535 1.1 jonathan return EINVAL;
7536 1.1 jonathan }
7537 1.1 jonathan break;
7538 1.1 jonathan default:
7539 1.1 jonathan ipseclog((LOG_DEBUG,
7540 1.1 jonathan "key_align: invalid ext_type %u is passed.\n",
7541 1.1 jonathan ext->sadb_ext_type));
7542 1.1 jonathan m_freem(m);
7543 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVEXTTYPE);
7544 1.1 jonathan return EINVAL;
7545 1.1 jonathan }
7546 1.1 jonathan
7547 1.1 jonathan extlen = PFKEY_UNUNIT64(ext->sadb_ext_len);
7548 1.1 jonathan
7549 1.1 jonathan if (key_validate_ext(ext, extlen)) {
7550 1.1 jonathan m_freem(m);
7551 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVLEN);
7552 1.1 jonathan return EINVAL;
7553 1.1 jonathan }
7554 1.1 jonathan
7555 1.1 jonathan n = m_pulldown(m, off, extlen, &toff);
7556 1.1 jonathan if (!n) {
7557 1.1 jonathan /* m is already freed */
7558 1.1 jonathan return ENOBUFS;
7559 1.1 jonathan }
7560 1.39 degroote ext = (struct sadb_ext *)(mtod(n, char *) + toff);
7561 1.1 jonathan
7562 1.1 jonathan mhp->ext[ext->sadb_ext_type] = ext;
7563 1.1 jonathan mhp->extoff[ext->sadb_ext_type] = off;
7564 1.1 jonathan mhp->extlen[ext->sadb_ext_type] = extlen;
7565 1.1 jonathan }
7566 1.1 jonathan
7567 1.1 jonathan if (off != end) {
7568 1.1 jonathan m_freem(m);
7569 1.52 thorpej PFKEY_STATINC(PFKEY_STAT_OUT_INVLEN);
7570 1.1 jonathan return EINVAL;
7571 1.1 jonathan }
7572 1.1 jonathan
7573 1.1 jonathan return 0;
7574 1.1 jonathan }
7575 1.1 jonathan
7576 1.1 jonathan static int
7577 1.49 degroote key_validate_ext(const struct sadb_ext *ext, int len)
7578 1.1 jonathan {
7579 1.1 jonathan const struct sockaddr *sa;
7580 1.1 jonathan enum { NONE, ADDR } checktype = NONE;
7581 1.1 jonathan int baselen = 0;
7582 1.1 jonathan const int sal = offsetof(struct sockaddr, sa_len) + sizeof(sa->sa_len);
7583 1.1 jonathan
7584 1.1 jonathan if (len != PFKEY_UNUNIT64(ext->sadb_ext_len))
7585 1.1 jonathan return EINVAL;
7586 1.1 jonathan
7587 1.1 jonathan /* if it does not match minimum/maximum length, bail */
7588 1.1 jonathan if (ext->sadb_ext_type >= sizeof(minsize) / sizeof(minsize[0]) ||
7589 1.1 jonathan ext->sadb_ext_type >= sizeof(maxsize) / sizeof(maxsize[0]))
7590 1.1 jonathan return EINVAL;
7591 1.1 jonathan if (!minsize[ext->sadb_ext_type] || len < minsize[ext->sadb_ext_type])
7592 1.1 jonathan return EINVAL;
7593 1.1 jonathan if (maxsize[ext->sadb_ext_type] && len > maxsize[ext->sadb_ext_type])
7594 1.1 jonathan return EINVAL;
7595 1.1 jonathan
7596 1.1 jonathan /* more checks based on sadb_ext_type XXX need more */
7597 1.1 jonathan switch (ext->sadb_ext_type) {
7598 1.1 jonathan case SADB_EXT_ADDRESS_SRC:
7599 1.1 jonathan case SADB_EXT_ADDRESS_DST:
7600 1.1 jonathan case SADB_EXT_ADDRESS_PROXY:
7601 1.1 jonathan baselen = PFKEY_ALIGN8(sizeof(struct sadb_address));
7602 1.1 jonathan checktype = ADDR;
7603 1.1 jonathan break;
7604 1.1 jonathan case SADB_EXT_IDENTITY_SRC:
7605 1.1 jonathan case SADB_EXT_IDENTITY_DST:
7606 1.1 jonathan if (((const struct sadb_ident *)ext)->sadb_ident_type ==
7607 1.1 jonathan SADB_X_IDENTTYPE_ADDR) {
7608 1.1 jonathan baselen = PFKEY_ALIGN8(sizeof(struct sadb_ident));
7609 1.1 jonathan checktype = ADDR;
7610 1.1 jonathan } else
7611 1.1 jonathan checktype = NONE;
7612 1.1 jonathan break;
7613 1.1 jonathan default:
7614 1.1 jonathan checktype = NONE;
7615 1.1 jonathan break;
7616 1.1 jonathan }
7617 1.1 jonathan
7618 1.1 jonathan switch (checktype) {
7619 1.1 jonathan case NONE:
7620 1.1 jonathan break;
7621 1.1 jonathan case ADDR:
7622 1.1 jonathan sa = (const struct sockaddr *)(((const u_int8_t*)ext)+baselen);
7623 1.1 jonathan if (len < baselen + sal)
7624 1.1 jonathan return EINVAL;
7625 1.1 jonathan if (baselen + PFKEY_ALIGN8(sa->sa_len) != len)
7626 1.1 jonathan return EINVAL;
7627 1.1 jonathan break;
7628 1.1 jonathan }
7629 1.1 jonathan
7630 1.1 jonathan return 0;
7631 1.1 jonathan }
7632 1.1 jonathan
7633 1.52 thorpej static int
7634 1.52 thorpej key_do_init(void)
7635 1.1 jonathan {
7636 1.1 jonathan int i;
7637 1.1 jonathan
7638 1.52 thorpej pfkeystat_percpu = percpu_alloc(sizeof(uint64_t) * PFKEY_NSTATS);
7639 1.52 thorpej
7640 1.50 ad callout_init(&key_timehandler_ch, 0);
7641 1.1 jonathan
7642 1.1 jonathan for (i = 0; i < IPSEC_DIR_MAX; i++) {
7643 1.1 jonathan LIST_INIT(&sptree[i]);
7644 1.1 jonathan }
7645 1.1 jonathan
7646 1.1 jonathan LIST_INIT(&sahtree);
7647 1.1 jonathan
7648 1.1 jonathan for (i = 0; i <= SADB_SATYPE_MAX; i++) {
7649 1.1 jonathan LIST_INIT(®tree[i]);
7650 1.1 jonathan }
7651 1.1 jonathan
7652 1.1 jonathan #ifndef IPSEC_NONBLOCK_ACQUIRE
7653 1.1 jonathan LIST_INIT(&acqtree);
7654 1.1 jonathan #endif
7655 1.1 jonathan LIST_INIT(&spacqtree);
7656 1.1 jonathan
7657 1.1 jonathan /* system default */
7658 1.1 jonathan ip4_def_policy.policy = IPSEC_POLICY_NONE;
7659 1.1 jonathan ip4_def_policy.refcnt++; /*never reclaim this*/
7660 1.1 jonathan
7661 1.47 degroote #ifdef INET6
7662 1.47 degroote ip6_def_policy.policy = IPSEC_POLICY_NONE;
7663 1.47 degroote ip6_def_policy.refcnt++; /*never reclaim this*/
7664 1.47 degroote #endif
7665 1.47 degroote
7666 1.1 jonathan
7667 1.1 jonathan #ifndef IPSEC_DEBUG2
7668 1.40 degroote callout_reset(&key_timehandler_ch, hz, key_timehandler, NULL);
7669 1.1 jonathan #endif /*IPSEC_DEBUG2*/
7670 1.1 jonathan
7671 1.1 jonathan /* initialize key statistics */
7672 1.1 jonathan keystat.getspi_count = 1;
7673 1.1 jonathan
7674 1.1 jonathan printf("IPsec: Initialized Security Association Processing.\n");
7675 1.1 jonathan
7676 1.52 thorpej return (0);
7677 1.52 thorpej }
7678 1.52 thorpej
7679 1.52 thorpej void
7680 1.52 thorpej key_init(void)
7681 1.52 thorpej {
7682 1.52 thorpej static ONCE_DECL(key_init_once);
7683 1.52 thorpej
7684 1.52 thorpej RUN_ONCE(&key_init_once, key_do_init);
7685 1.1 jonathan }
7686 1.1 jonathan
7687 1.1 jonathan /*
7688 1.1 jonathan * XXX: maybe This function is called after INBOUND IPsec processing.
7689 1.1 jonathan *
7690 1.1 jonathan * Special check for tunnel-mode packets.
7691 1.1 jonathan * We must make some checks for consistency between inner and outer IP header.
7692 1.1 jonathan *
7693 1.1 jonathan * xxx more checks to be provided
7694 1.1 jonathan */
7695 1.1 jonathan int
7696 1.29 christos key_checktunnelsanity(
7697 1.29 christos struct secasvar *sav,
7698 1.30 christos u_int family,
7699 1.38 christos void *src,
7700 1.38 christos void *dst
7701 1.29 christos )
7702 1.1 jonathan {
7703 1.1 jonathan /* sanity check */
7704 1.1 jonathan if (sav->sah == NULL)
7705 1.1 jonathan panic("sav->sah == NULL at key_checktunnelsanity");
7706 1.1 jonathan
7707 1.1 jonathan /* XXX: check inner IP header */
7708 1.1 jonathan
7709 1.1 jonathan return 1;
7710 1.1 jonathan }
7711 1.1 jonathan
7712 1.1 jonathan #if 0
7713 1.1 jonathan #define hostnamelen strlen(hostname)
7714 1.1 jonathan
7715 1.1 jonathan /*
7716 1.1 jonathan * Get FQDN for the host.
7717 1.1 jonathan * If the administrator configured hostname (by hostname(1)) without
7718 1.1 jonathan * domain name, returns nothing.
7719 1.1 jonathan */
7720 1.1 jonathan static const char *
7721 1.1 jonathan key_getfqdn()
7722 1.1 jonathan {
7723 1.1 jonathan int i;
7724 1.1 jonathan int hasdot;
7725 1.1 jonathan static char fqdn[MAXHOSTNAMELEN + 1];
7726 1.1 jonathan
7727 1.1 jonathan if (!hostnamelen)
7728 1.1 jonathan return NULL;
7729 1.1 jonathan
7730 1.1 jonathan /* check if it comes with domain name. */
7731 1.1 jonathan hasdot = 0;
7732 1.1 jonathan for (i = 0; i < hostnamelen; i++) {
7733 1.1 jonathan if (hostname[i] == '.')
7734 1.1 jonathan hasdot++;
7735 1.1 jonathan }
7736 1.1 jonathan if (!hasdot)
7737 1.1 jonathan return NULL;
7738 1.1 jonathan
7739 1.1 jonathan /* NOTE: hostname may not be NUL-terminated. */
7740 1.49 degroote memset(fqdn, 0, sizeof(fqdn));
7741 1.49 degroote memcpy(fqdn, hostname, hostnamelen);
7742 1.1 jonathan fqdn[hostnamelen] = '\0';
7743 1.1 jonathan return fqdn;
7744 1.1 jonathan }
7745 1.1 jonathan
7746 1.1 jonathan /*
7747 1.1 jonathan * get username@FQDN for the host/user.
7748 1.1 jonathan */
7749 1.1 jonathan static const char *
7750 1.1 jonathan key_getuserfqdn()
7751 1.1 jonathan {
7752 1.1 jonathan const char *host;
7753 1.1 jonathan static char userfqdn[MAXHOSTNAMELEN + MAXLOGNAME + 2];
7754 1.1 jonathan struct proc *p = curproc;
7755 1.1 jonathan char *q;
7756 1.1 jonathan
7757 1.1 jonathan if (!p || !p->p_pgrp || !p->p_pgrp->pg_session)
7758 1.1 jonathan return NULL;
7759 1.1 jonathan if (!(host = key_getfqdn()))
7760 1.1 jonathan return NULL;
7761 1.1 jonathan
7762 1.1 jonathan /* NOTE: s_login may not be-NUL terminated. */
7763 1.49 degroote memset(userfqdn, 0, sizeof(userfqdn));
7764 1.49 degroote memcpy(userfqdn, Mp->p_pgrp->pg_session->s_login, AXLOGNAME);
7765 1.1 jonathan userfqdn[MAXLOGNAME] = '\0'; /* safeguard */
7766 1.1 jonathan q = userfqdn + strlen(userfqdn);
7767 1.1 jonathan *q++ = '@';
7768 1.49 degroote memcpy(q, host, strlen(host));
7769 1.1 jonathan q += strlen(host);
7770 1.1 jonathan *q++ = '\0';
7771 1.1 jonathan
7772 1.1 jonathan return userfqdn;
7773 1.1 jonathan }
7774 1.1 jonathan #endif
7775 1.1 jonathan
7776 1.1 jonathan /* record data transfer on SA, and update timestamps */
7777 1.1 jonathan void
7778 1.49 degroote key_sa_recordxfer(struct secasvar *sav, struct mbuf *m)
7779 1.1 jonathan {
7780 1.1 jonathan IPSEC_ASSERT(sav != NULL, ("key_sa_recordxfer: Null secasvar"));
7781 1.1 jonathan IPSEC_ASSERT(m != NULL, ("key_sa_recordxfer: Null mbuf"));
7782 1.1 jonathan if (!sav->lft_c)
7783 1.1 jonathan return;
7784 1.1 jonathan
7785 1.1 jonathan /*
7786 1.1 jonathan * XXX Currently, there is a difference of bytes size
7787 1.1 jonathan * between inbound and outbound processing.
7788 1.1 jonathan */
7789 1.1 jonathan sav->lft_c->sadb_lifetime_bytes += m->m_pkthdr.len;
7790 1.1 jonathan /* to check bytes lifetime is done in key_timehandler(). */
7791 1.1 jonathan
7792 1.1 jonathan /*
7793 1.1 jonathan * We use the number of packets as the unit of
7794 1.1 jonathan * sadb_lifetime_allocations. We increment the variable
7795 1.1 jonathan * whenever {esp,ah}_{in,out}put is called.
7796 1.1 jonathan */
7797 1.1 jonathan sav->lft_c->sadb_lifetime_allocations++;
7798 1.1 jonathan /* XXX check for expires? */
7799 1.1 jonathan
7800 1.1 jonathan /*
7801 1.1 jonathan * NOTE: We record CURRENT sadb_lifetime_usetime by using wall clock,
7802 1.1 jonathan * in seconds. HARD and SOFT lifetime are measured by the time
7803 1.1 jonathan * difference (again in seconds) from sadb_lifetime_usetime.
7804 1.1 jonathan *
7805 1.1 jonathan * usetime
7806 1.1 jonathan * v expire expire
7807 1.1 jonathan * -----+-----+--------+---> t
7808 1.1 jonathan * <--------------> HARD
7809 1.1 jonathan * <-----> SOFT
7810 1.1 jonathan */
7811 1.1 jonathan sav->lft_c->sadb_lifetime_usetime = time_second;
7812 1.1 jonathan /* XXX check for expires? */
7813 1.1 jonathan
7814 1.1 jonathan return;
7815 1.1 jonathan }
7816 1.1 jonathan
7817 1.1 jonathan /* dumb version */
7818 1.1 jonathan void
7819 1.49 degroote key_sa_routechange(struct sockaddr *dst)
7820 1.1 jonathan {
7821 1.1 jonathan struct secashead *sah;
7822 1.1 jonathan struct route *ro;
7823 1.1 jonathan
7824 1.1 jonathan LIST_FOREACH(sah, &sahtree, chain) {
7825 1.1 jonathan ro = &sah->sa_route;
7826 1.36 dyoung if (dst->sa_len == rtcache_getdst(ro)->sa_len &&
7827 1.36 dyoung memcmp(dst, rtcache_getdst(ro), dst->sa_len) == 0)
7828 1.32 joerg rtcache_free(ro);
7829 1.1 jonathan }
7830 1.1 jonathan
7831 1.1 jonathan return;
7832 1.1 jonathan }
7833 1.1 jonathan
7834 1.1 jonathan static void
7835 1.49 degroote key_sa_chgstate(struct secasvar *sav, u_int8_t state)
7836 1.1 jonathan {
7837 1.1 jonathan if (sav == NULL)
7838 1.1 jonathan panic("key_sa_chgstate called with sav == NULL");
7839 1.1 jonathan
7840 1.1 jonathan if (sav->state == state)
7841 1.1 jonathan return;
7842 1.1 jonathan
7843 1.1 jonathan if (__LIST_CHAINED(sav))
7844 1.1 jonathan LIST_REMOVE(sav, chain);
7845 1.1 jonathan
7846 1.1 jonathan sav->state = state;
7847 1.1 jonathan LIST_INSERT_HEAD(&sav->sah->savtree[state], sav, chain);
7848 1.1 jonathan }
7849 1.1 jonathan
7850 1.1 jonathan void
7851 1.49 degroote key_sa_stir_iv(struct secasvar *sav)
7852 1.1 jonathan {
7853 1.1 jonathan
7854 1.1 jonathan if (!sav->iv)
7855 1.1 jonathan panic("key_sa_stir_iv called with sav == NULL");
7856 1.1 jonathan key_randomfill(sav->iv, sav->ivlen);
7857 1.1 jonathan }
7858 1.1 jonathan
7859 1.1 jonathan /* XXX too much? */
7860 1.1 jonathan static struct mbuf *
7861 1.49 degroote key_alloc_mbuf(int l)
7862 1.1 jonathan {
7863 1.1 jonathan struct mbuf *m = NULL, *n;
7864 1.1 jonathan int len, t;
7865 1.1 jonathan
7866 1.1 jonathan len = l;
7867 1.1 jonathan while (len > 0) {
7868 1.1 jonathan MGET(n, M_DONTWAIT, MT_DATA);
7869 1.1 jonathan if (n && len > MLEN)
7870 1.1 jonathan MCLGET(n, M_DONTWAIT);
7871 1.1 jonathan if (!n) {
7872 1.1 jonathan m_freem(m);
7873 1.1 jonathan return NULL;
7874 1.1 jonathan }
7875 1.1 jonathan
7876 1.1 jonathan n->m_next = NULL;
7877 1.1 jonathan n->m_len = 0;
7878 1.1 jonathan n->m_len = M_TRAILINGSPACE(n);
7879 1.1 jonathan /* use the bottom of mbuf, hoping we can prepend afterwards */
7880 1.1 jonathan if (n->m_len > len) {
7881 1.1 jonathan t = (n->m_len - len) & ~(sizeof(long) - 1);
7882 1.1 jonathan n->m_data += t;
7883 1.1 jonathan n->m_len = len;
7884 1.1 jonathan }
7885 1.1 jonathan
7886 1.1 jonathan len -= n->m_len;
7887 1.1 jonathan
7888 1.1 jonathan if (m)
7889 1.1 jonathan m_cat(m, n);
7890 1.1 jonathan else
7891 1.1 jonathan m = n;
7892 1.1 jonathan }
7893 1.1 jonathan
7894 1.1 jonathan return m;
7895 1.1 jonathan }
7896 1.1 jonathan
7897 1.5 scw static struct mbuf *
7898 1.20 jonathan key_setdump(u_int8_t req_satype, int *errorp, uint32_t pid)
7899 1.5 scw {
7900 1.5 scw struct secashead *sah;
7901 1.5 scw struct secasvar *sav;
7902 1.5 scw u_int16_t proto;
7903 1.5 scw u_int stateidx;
7904 1.5 scw u_int8_t satype;
7905 1.5 scw u_int8_t state;
7906 1.5 scw int cnt;
7907 1.5 scw struct mbuf *m, *n;
7908 1.5 scw
7909 1.5 scw /* map satype to proto */
7910 1.5 scw if ((proto = key_satype2proto(req_satype)) == 0) {
7911 1.5 scw *errorp = EINVAL;
7912 1.5 scw return (NULL);
7913 1.5 scw }
7914 1.5 scw
7915 1.5 scw /* count sav entries to be sent to the userland. */
7916 1.5 scw cnt = 0;
7917 1.5 scw LIST_FOREACH(sah, &sahtree, chain) {
7918 1.5 scw if (req_satype != SADB_SATYPE_UNSPEC &&
7919 1.5 scw proto != sah->saidx.proto)
7920 1.5 scw continue;
7921 1.5 scw
7922 1.5 scw for (stateidx = 0;
7923 1.5 scw stateidx < _ARRAYLEN(saorder_state_any);
7924 1.5 scw stateidx++) {
7925 1.5 scw state = saorder_state_any[stateidx];
7926 1.5 scw LIST_FOREACH(sav, &sah->savtree[state], chain) {
7927 1.5 scw cnt++;
7928 1.5 scw }
7929 1.5 scw }
7930 1.5 scw }
7931 1.5 scw
7932 1.5 scw if (cnt == 0) {
7933 1.5 scw *errorp = ENOENT;
7934 1.5 scw return (NULL);
7935 1.5 scw }
7936 1.5 scw
7937 1.5 scw /* send this to the userland, one at a time. */
7938 1.5 scw m = NULL;
7939 1.5 scw LIST_FOREACH(sah, &sahtree, chain) {
7940 1.5 scw if (req_satype != SADB_SATYPE_UNSPEC &&
7941 1.5 scw proto != sah->saidx.proto)
7942 1.5 scw continue;
7943 1.5 scw
7944 1.5 scw /* map proto to satype */
7945 1.5 scw if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
7946 1.5 scw m_freem(m);
7947 1.5 scw *errorp = EINVAL;
7948 1.5 scw return (NULL);
7949 1.5 scw }
7950 1.5 scw
7951 1.5 scw for (stateidx = 0;
7952 1.5 scw stateidx < _ARRAYLEN(saorder_state_any);
7953 1.5 scw stateidx++) {
7954 1.5 scw state = saorder_state_any[stateidx];
7955 1.5 scw LIST_FOREACH(sav, &sah->savtree[state], chain) {
7956 1.5 scw n = key_setdumpsa(sav, SADB_DUMP, satype,
7957 1.20 jonathan --cnt, pid);
7958 1.5 scw if (!n) {
7959 1.5 scw m_freem(m);
7960 1.5 scw *errorp = ENOBUFS;
7961 1.5 scw return (NULL);
7962 1.5 scw }
7963 1.5 scw
7964 1.5 scw if (!m)
7965 1.5 scw m = n;
7966 1.5 scw else
7967 1.5 scw m_cat(m, n);
7968 1.5 scw }
7969 1.5 scw }
7970 1.5 scw }
7971 1.5 scw
7972 1.5 scw if (!m) {
7973 1.5 scw *errorp = EINVAL;
7974 1.5 scw return (NULL);
7975 1.5 scw }
7976 1.5 scw
7977 1.5 scw if ((m->m_flags & M_PKTHDR) != 0) {
7978 1.5 scw m->m_pkthdr.len = 0;
7979 1.5 scw for (n = m; n; n = n->m_next)
7980 1.5 scw m->m_pkthdr.len += n->m_len;
7981 1.5 scw }
7982 1.5 scw
7983 1.5 scw *errorp = 0;
7984 1.5 scw return (m);
7985 1.5 scw }
7986 1.5 scw
7987 1.5 scw static struct mbuf *
7988 1.20 jonathan key_setspddump(int *errorp, pid_t pid)
7989 1.5 scw {
7990 1.5 scw struct secpolicy *sp;
7991 1.5 scw int cnt;
7992 1.5 scw u_int dir;
7993 1.5 scw struct mbuf *m, *n;
7994 1.5 scw
7995 1.5 scw /* search SPD entry and get buffer size. */
7996 1.5 scw cnt = 0;
7997 1.5 scw for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
7998 1.5 scw LIST_FOREACH(sp, &sptree[dir], chain) {
7999 1.5 scw cnt++;
8000 1.5 scw }
8001 1.5 scw }
8002 1.5 scw
8003 1.5 scw if (cnt == 0) {
8004 1.5 scw *errorp = ENOENT;
8005 1.5 scw return (NULL);
8006 1.5 scw }
8007 1.5 scw
8008 1.5 scw m = NULL;
8009 1.5 scw for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
8010 1.5 scw LIST_FOREACH(sp, &sptree[dir], chain) {
8011 1.5 scw --cnt;
8012 1.20 jonathan n = key_setdumpsp(sp, SADB_X_SPDDUMP, cnt, pid);
8013 1.5 scw
8014 1.5 scw if (!n) {
8015 1.5 scw *errorp = ENOBUFS;
8016 1.5 scw m_freem(m);
8017 1.5 scw return (NULL);
8018 1.5 scw }
8019 1.5 scw if (!m)
8020 1.5 scw m = n;
8021 1.5 scw else {
8022 1.5 scw m->m_pkthdr.len += n->m_pkthdr.len;
8023 1.5 scw m_cat(m, n);
8024 1.5 scw }
8025 1.5 scw }
8026 1.5 scw }
8027 1.5 scw
8028 1.5 scw *errorp = 0;
8029 1.5 scw return (m);
8030 1.5 scw }
8031 1.5 scw
8032 1.5 scw static int
8033 1.5 scw sysctl_net_key_dumpsa(SYSCTLFN_ARGS)
8034 1.5 scw {
8035 1.5 scw struct mbuf *m, *n;
8036 1.5 scw int err2 = 0;
8037 1.5 scw char *p, *ep;
8038 1.5 scw size_t len;
8039 1.5 scw int s, error;
8040 1.5 scw
8041 1.5 scw if (newp)
8042 1.5 scw return (EPERM);
8043 1.5 scw if (namelen != 1)
8044 1.5 scw return (EINVAL);
8045 1.5 scw
8046 1.5 scw s = splsoftnet();
8047 1.20 jonathan m = key_setdump(name[0], &error, l->l_proc->p_pid);
8048 1.5 scw splx(s);
8049 1.5 scw if (!m)
8050 1.5 scw return (error);
8051 1.5 scw if (!oldp)
8052 1.5 scw *oldlenp = m->m_pkthdr.len;
8053 1.5 scw else {
8054 1.5 scw p = oldp;
8055 1.5 scw if (*oldlenp < m->m_pkthdr.len) {
8056 1.5 scw err2 = ENOMEM;
8057 1.5 scw ep = p + *oldlenp;
8058 1.5 scw } else {
8059 1.5 scw *oldlenp = m->m_pkthdr.len;
8060 1.5 scw ep = p + m->m_pkthdr.len;
8061 1.5 scw }
8062 1.5 scw for (n = m; n; n = n->m_next) {
8063 1.5 scw len = (ep - p < n->m_len) ?
8064 1.5 scw ep - p : n->m_len;
8065 1.5 scw error = copyout(mtod(n, const void *), p, len);
8066 1.5 scw p += len;
8067 1.5 scw if (error)
8068 1.5 scw break;
8069 1.5 scw }
8070 1.5 scw if (error == 0)
8071 1.5 scw error = err2;
8072 1.5 scw }
8073 1.5 scw m_freem(m);
8074 1.5 scw
8075 1.5 scw return (error);
8076 1.5 scw }
8077 1.5 scw
8078 1.5 scw static int
8079 1.5 scw sysctl_net_key_dumpsp(SYSCTLFN_ARGS)
8080 1.5 scw {
8081 1.5 scw struct mbuf *m, *n;
8082 1.5 scw int err2 = 0;
8083 1.5 scw char *p, *ep;
8084 1.5 scw size_t len;
8085 1.5 scw int s, error;
8086 1.5 scw
8087 1.5 scw if (newp)
8088 1.5 scw return (EPERM);
8089 1.5 scw if (namelen != 0)
8090 1.5 scw return (EINVAL);
8091 1.5 scw
8092 1.5 scw s = splsoftnet();
8093 1.20 jonathan m = key_setspddump(&error, l->l_proc->p_pid);
8094 1.5 scw splx(s);
8095 1.5 scw if (!m)
8096 1.5 scw return (error);
8097 1.5 scw if (!oldp)
8098 1.5 scw *oldlenp = m->m_pkthdr.len;
8099 1.5 scw else {
8100 1.5 scw p = oldp;
8101 1.5 scw if (*oldlenp < m->m_pkthdr.len) {
8102 1.5 scw err2 = ENOMEM;
8103 1.5 scw ep = p + *oldlenp;
8104 1.5 scw } else {
8105 1.5 scw *oldlenp = m->m_pkthdr.len;
8106 1.5 scw ep = p + m->m_pkthdr.len;
8107 1.5 scw }
8108 1.5 scw for (n = m; n; n = n->m_next) {
8109 1.5 scw len = (ep - p < n->m_len) ?
8110 1.5 scw ep - p : n->m_len;
8111 1.5 scw error = copyout(mtod(n, const void *), p, len);
8112 1.5 scw p += len;
8113 1.5 scw if (error)
8114 1.5 scw break;
8115 1.5 scw }
8116 1.5 scw if (error == 0)
8117 1.5 scw error = err2;
8118 1.5 scw }
8119 1.5 scw m_freem(m);
8120 1.5 scw
8121 1.5 scw return (error);
8122 1.5 scw }
8123 1.5 scw
8124 1.15 jonathan /*
8125 1.15 jonathan * Create sysctl tree for native FAST_IPSEC key knobs, originally
8126 1.15 jonathan * under name "net.keyv2" * with MIB number { CTL_NET, PF_KEY_V2. }.
8127 1.15 jonathan * However, sysctl(8) never checked for nodes under { CTL_NET, PF_KEY_V2 };
8128 1.15 jonathan * and in any case the part of our sysctl namespace used for dumping the
8129 1.15 jonathan * SPD and SA database *HAS* to be compatible with the KAME sysctl
8130 1.15 jonathan * namespace, for API reasons.
8131 1.15 jonathan *
8132 1.15 jonathan * Pending a consensus on the right way to fix this, add a level of
8133 1.15 jonathan * indirection in how we number the `native' FAST_IPSEC key nodes;
8134 1.15 jonathan * and (as requested by Andrew Brown) move registration of the
8135 1.15 jonathan * KAME-compatible names to a separate function.
8136 1.15 jonathan */
8137 1.15 jonathan #if 0
8138 1.15 jonathan # define FAST_IPSEC_PFKEY PF_KEY_V2
8139 1.15 jonathan # define FAST_IPSEC_PFKEY_NAME "keyv2"
8140 1.15 jonathan #else
8141 1.15 jonathan # define FAST_IPSEC_PFKEY PF_KEY
8142 1.15 jonathan # define FAST_IPSEC_PFKEY_NAME "key"
8143 1.15 jonathan #endif
8144 1.15 jonathan
8145 1.52 thorpej static int
8146 1.52 thorpej sysctl_net_key_stats(SYSCTLFN_ARGS)
8147 1.52 thorpej {
8148 1.52 thorpej netstat_sysctl_context ctx;
8149 1.52 thorpej uint64_t ps[PFKEY_NSTATS];
8150 1.52 thorpej
8151 1.52 thorpej ctx.ctx_stat = pfkeystat_percpu;
8152 1.52 thorpej ctx.ctx_counters = ps;
8153 1.52 thorpej ctx.ctx_ncounters = PFKEY_NSTATS;
8154 1.52 thorpej return (NETSTAT_SYSCTL(&ctx));
8155 1.52 thorpej }
8156 1.52 thorpej
8157 1.4 atatat SYSCTL_SETUP(sysctl_net_keyv2_setup, "sysctl net.keyv2 subtree setup")
8158 1.4 atatat {
8159 1.4 atatat
8160 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8161 1.11 atatat CTLFLAG_PERMANENT,
8162 1.4 atatat CTLTYPE_NODE, "net", NULL,
8163 1.4 atatat NULL, 0, NULL, 0,
8164 1.4 atatat CTL_NET, CTL_EOL);
8165 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8166 1.11 atatat CTLFLAG_PERMANENT,
8167 1.15 jonathan CTLTYPE_NODE, FAST_IPSEC_PFKEY_NAME, NULL,
8168 1.4 atatat NULL, 0, NULL, 0,
8169 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, CTL_EOL);
8170 1.4 atatat
8171 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8172 1.11 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8173 1.4 atatat CTLTYPE_INT, "debug", NULL,
8174 1.4 atatat NULL, 0, &key_debug_level, 0,
8175 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, KEYCTL_DEBUG_LEVEL, CTL_EOL);
8176 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8177 1.11 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8178 1.4 atatat CTLTYPE_INT, "spi_try", NULL,
8179 1.4 atatat NULL, 0, &key_spi_trycnt, 0,
8180 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, KEYCTL_SPI_TRY, CTL_EOL);
8181 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8182 1.11 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8183 1.4 atatat CTLTYPE_INT, "spi_min_value", NULL,
8184 1.4 atatat NULL, 0, &key_spi_minval, 0,
8185 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, KEYCTL_SPI_MIN_VALUE, CTL_EOL);
8186 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8187 1.11 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8188 1.4 atatat CTLTYPE_INT, "spi_max_value", NULL,
8189 1.4 atatat NULL, 0, &key_spi_maxval, 0,
8190 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, KEYCTL_SPI_MAX_VALUE, CTL_EOL);
8191 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8192 1.11 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8193 1.4 atatat CTLTYPE_INT, "random_int", NULL,
8194 1.4 atatat NULL, 0, &key_int_random, 0,
8195 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, KEYCTL_RANDOM_INT, CTL_EOL);
8196 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8197 1.11 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8198 1.4 atatat CTLTYPE_INT, "larval_lifetime", NULL,
8199 1.4 atatat NULL, 0, &key_larval_lifetime, 0,
8200 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, KEYCTL_LARVAL_LIFETIME, CTL_EOL);
8201 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8202 1.11 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8203 1.4 atatat CTLTYPE_INT, "blockacq_count", NULL,
8204 1.4 atatat NULL, 0, &key_blockacq_count, 0,
8205 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, KEYCTL_BLOCKACQ_COUNT, CTL_EOL);
8206 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8207 1.11 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8208 1.4 atatat CTLTYPE_INT, "blockacq_lifetime", NULL,
8209 1.4 atatat NULL, 0, &key_blockacq_lifetime, 0,
8210 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, KEYCTL_BLOCKACQ_LIFETIME, CTL_EOL);
8211 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8212 1.11 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8213 1.4 atatat CTLTYPE_INT, "esp_keymin", NULL,
8214 1.4 atatat NULL, 0, &ipsec_esp_keymin, 0,
8215 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, KEYCTL_ESP_KEYMIN, CTL_EOL);
8216 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8217 1.11 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8218 1.16 atatat CTLTYPE_INT, "prefered_oldsa", NULL,
8219 1.16 atatat NULL, 0, &key_prefered_oldsa, 0,
8220 1.16 atatat CTL_NET, PF_KEY, KEYCTL_PREFERED_OLDSA, CTL_EOL);
8221 1.16 atatat sysctl_createv(clog, 0, NULL, NULL,
8222 1.16 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8223 1.4 atatat CTLTYPE_INT, "esp_auth", NULL,
8224 1.4 atatat NULL, 0, &ipsec_esp_auth, 0,
8225 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, KEYCTL_ESP_AUTH, CTL_EOL);
8226 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8227 1.11 atatat CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
8228 1.4 atatat CTLTYPE_INT, "ah_keymin", NULL,
8229 1.4 atatat NULL, 0, &ipsec_ah_keymin, 0,
8230 1.15 jonathan CTL_NET, FAST_IPSEC_PFKEY, KEYCTL_AH_KEYMIN, CTL_EOL);
8231 1.52 thorpej sysctl_createv(clog, 0, NULL, NULL,
8232 1.52 thorpej CTLFLAG_PERMANENT,
8233 1.52 thorpej CTLTYPE_STRUCT, "stats",
8234 1.52 thorpej SYSCTL_DESCR("PF_KEY statistics"),
8235 1.52 thorpej sysctl_net_key_stats, 0, NULL, 0,
8236 1.52 thorpej CTL_NET, FAST_IPSEC_PFKEY, CTL_CREATE, CTL_EOL);
8237 1.15 jonathan }
8238 1.15 jonathan
8239 1.15 jonathan /*
8240 1.15 jonathan * Register sysctl names used by setkey(8). For historical reasons,
8241 1.15 jonathan * and to share a single API, these names appear under { CTL_NET, PF_KEY }
8242 1.15 jonathan * for both FAST_IPSEC and KAME IPSEC.
8243 1.15 jonathan */
8244 1.15 jonathan SYSCTL_SETUP(sysctl_net_key_compat_setup, "sysctl net.key subtree setup for FAST_IPSEC")
8245 1.15 jonathan {
8246 1.15 jonathan
8247 1.15 jonathan /* Make sure net.key exists before we register nodes underneath it. */
8248 1.15 jonathan sysctl_createv(clog, 0, NULL, NULL,
8249 1.15 jonathan CTLFLAG_PERMANENT,
8250 1.15 jonathan CTLTYPE_NODE, "net", NULL,
8251 1.15 jonathan NULL, 0, NULL, 0,
8252 1.15 jonathan CTL_NET, CTL_EOL);
8253 1.15 jonathan sysctl_createv(clog, 0, NULL, NULL,
8254 1.15 jonathan CTLFLAG_PERMANENT,
8255 1.15 jonathan CTLTYPE_NODE, "key", NULL,
8256 1.15 jonathan NULL, 0, NULL, 0,
8257 1.15 jonathan CTL_NET, PF_KEY, CTL_EOL);
8258 1.15 jonathan
8259 1.15 jonathan /* Register the net.key.dump{sa,sp} nodes used by setkey(8). */
8260 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8261 1.11 atatat CTLFLAG_PERMANENT,
8262 1.5 scw CTLTYPE_STRUCT, "dumpsa", NULL,
8263 1.5 scw sysctl_net_key_dumpsa, 0, NULL, 0,
8264 1.5 scw CTL_NET, PF_KEY, KEYCTL_DUMPSA, CTL_EOL);
8265 1.11 atatat sysctl_createv(clog, 0, NULL, NULL,
8266 1.11 atatat CTLFLAG_PERMANENT,
8267 1.5 scw CTLTYPE_STRUCT, "dumpsp", NULL,
8268 1.5 scw sysctl_net_key_dumpsp, 0, NULL, 0,
8269 1.5 scw CTL_NET, PF_KEY, KEYCTL_DUMPSP, CTL_EOL);
8270 1.1 jonathan }
8271