libnl 3.5.0

sa.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
4 *
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the
16 * distribution.
17 *
18 * Neither the name of Texas Instruments Incorporated nor the names of
19 * its contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 */
35
36 /**
37 * @ingroup xfrmnl
38 * @defgroup sa Security Association
39 * @brief
40 */
41
42 #include <netlink-private/netlink.h>
43 #include <netlink/netlink.h>
44 #include <netlink/cache.h>
45 #include <netlink/object.h>
46 #include <netlink/xfrm/sa.h>
47 #include <netlink/xfrm/selector.h>
48 #include <netlink/xfrm/lifetime.h>
49 #include <time.h>
50
51 #include "netlink-private/utils.h"
52
53 /** @cond SKIP */
54 #define XFRM_SA_ATTR_SEL 0x01
55 #define XFRM_SA_ATTR_DADDR 0x02
56 #define XFRM_SA_ATTR_SPI 0x04
57 #define XFRM_SA_ATTR_PROTO 0x08
58 #define XFRM_SA_ATTR_SADDR 0x10
59 #define XFRM_SA_ATTR_LTIME_CFG 0x20
60 #define XFRM_SA_ATTR_LTIME_CUR 0x40
61 #define XFRM_SA_ATTR_STATS 0x80
62 #define XFRM_SA_ATTR_SEQ 0x100
63 #define XFRM_SA_ATTR_REQID 0x200
64 #define XFRM_SA_ATTR_FAMILY 0x400
65 #define XFRM_SA_ATTR_MODE 0x800
66 #define XFRM_SA_ATTR_REPLAY_WIN 0x1000
67 #define XFRM_SA_ATTR_FLAGS 0x2000
68 #define XFRM_SA_ATTR_ALG_AEAD 0x4000
69 #define XFRM_SA_ATTR_ALG_AUTH 0x8000
70 #define XFRM_SA_ATTR_ALG_CRYPT 0x10000
71 #define XFRM_SA_ATTR_ALG_COMP 0x20000
72 #define XFRM_SA_ATTR_ENCAP 0x40000
73 #define XFRM_SA_ATTR_TFCPAD 0x80000
74 #define XFRM_SA_ATTR_COADDR 0x100000
75 #define XFRM_SA_ATTR_MARK 0x200000
76 #define XFRM_SA_ATTR_SECCTX 0x400000
77 #define XFRM_SA_ATTR_REPLAY_MAXAGE 0x800000
78 #define XFRM_SA_ATTR_REPLAY_MAXDIFF 0x1000000
79 #define XFRM_SA_ATTR_REPLAY_STATE 0x2000000
80 #define XFRM_SA_ATTR_EXPIRE 0x4000000
81
82 static struct nl_cache_ops xfrmnl_sa_ops;
83 static struct nl_object_ops xfrm_sa_obj_ops;
84 /** @endcond */
85
86 static void xfrm_sa_alloc_data(struct nl_object *c)
87 {
88 struct xfrmnl_sa* sa = nl_object_priv (c);
89
90 if ((sa->sel = xfrmnl_sel_alloc ()) == NULL)
91 return;
92
93 if ((sa->lft = xfrmnl_ltime_cfg_alloc ()) == NULL)
94 return;
95 }
96
97 static void xfrm_sa_free_data(struct nl_object *c)
98 {
99 struct xfrmnl_sa* sa = nl_object_priv (c);
100
101 if (sa == NULL)
102 return;
103
104 xfrmnl_sel_put (sa->sel);
105 xfrmnl_ltime_cfg_put (sa->lft);
106 nl_addr_put (sa->id.daddr);
107 nl_addr_put (sa->saddr);
108
109 if (sa->aead)
110 free (sa->aead);
111 if (sa->auth)
112 free (sa->auth);
113 if (sa->crypt)
114 free (sa->crypt);
115 if (sa->comp)
116 free (sa->comp);
117 if (sa->encap) {
118 if (sa->encap->encap_oa)
119 nl_addr_put(sa->encap->encap_oa);
120 free(sa->encap);
121 }
122 if (sa->coaddr)
123 nl_addr_put (sa->coaddr);
124 if (sa->sec_ctx)
125 free (sa->sec_ctx);
126 if (sa->replay_state_esn)
127 free (sa->replay_state_esn);
128 }
129
130 static int xfrm_sa_clone(struct nl_object *_dst, struct nl_object *_src)
131 {
132 struct xfrmnl_sa* dst = nl_object_priv(_dst);
133 struct xfrmnl_sa* src = nl_object_priv(_src);
134 uint32_t len = 0;
135
136 if (src->sel)
137 if ((dst->sel = xfrmnl_sel_clone (src->sel)) == NULL)
138 return -NLE_NOMEM;
139
140 if (src->lft)
141 if ((dst->lft = xfrmnl_ltime_cfg_clone (src->lft)) == NULL)
142 return -NLE_NOMEM;
143
144 if (src->id.daddr)
145 if ((dst->id.daddr = nl_addr_clone (src->id.daddr)) == NULL)
146 return -NLE_NOMEM;
147
148 if (src->saddr)
149 if ((dst->saddr = nl_addr_clone (src->saddr)) == NULL)
150 return -NLE_NOMEM;
151
152 if (src->aead)
153 {
154 len = sizeof (struct xfrmnl_algo_aead) + ((src->aead->alg_key_len + 7) / 8);
155 if ((dst->aead = calloc (1, len)) == NULL)
156 return -NLE_NOMEM;
157 memcpy ((void *)dst->aead, (void *)src->aead, len);
158 }
159
160 if (src->auth)
161 {
162 len = sizeof (struct xfrmnl_algo_auth) + ((src->auth->alg_key_len + 7) / 8);
163 if ((dst->auth = calloc (1, len)) == NULL)
164 return -NLE_NOMEM;
165 memcpy ((void *)dst->auth, (void *)src->auth, len);
166 }
167
168 if (src->crypt)
169 {
170 len = sizeof (struct xfrmnl_algo) + ((src->crypt->alg_key_len + 7) / 8);
171 if ((dst->crypt = calloc (1, len)) == NULL)
172 return -NLE_NOMEM;
173 memcpy ((void *)dst->crypt, (void *)src->crypt, len);
174 }
175
176 if (src->comp)
177 {
178 len = sizeof (struct xfrmnl_algo) + ((src->comp->alg_key_len + 7) / 8);
179 if ((dst->comp = calloc (1, len)) == NULL)
180 return -NLE_NOMEM;
181 memcpy ((void *)dst->comp, (void *)src->comp, len);
182 }
183
184 if (src->encap)
185 {
186 len = sizeof (struct xfrmnl_encap_tmpl);
187 if ((dst->encap = calloc (1, len)) == NULL)
188 return -NLE_NOMEM;
189 memcpy ((void *)dst->encap, (void *)src->encap, len);
190 }
191
192 if (src->coaddr)
193 if ((dst->coaddr = nl_addr_clone (src->coaddr)) == NULL)
194 return -NLE_NOMEM;
195
196 if (src->sec_ctx)
197 {
198 len = sizeof (*src->sec_ctx) + src->sec_ctx->ctx_len;
199 if ((dst->sec_ctx = calloc (1, len)) == NULL)
200 return -NLE_NOMEM;
201 memcpy ((void *)dst->sec_ctx, (void *)src->sec_ctx, len);
202 }
203
204 if (src->replay_state_esn)
205 {
206 len = sizeof (struct xfrmnl_replay_state_esn) + (src->replay_state_esn->bmp_len * sizeof (uint32_t));
207 if ((dst->replay_state_esn = calloc (1, len)) == NULL)
208 return -NLE_NOMEM;
209 memcpy ((void *)dst->replay_state_esn, (void *)src->replay_state_esn, len);
210 }
211
212 return 0;
213 }
214
215 static uint64_t xfrm_sa_compare(struct nl_object *_a, struct nl_object *_b,
216 uint64_t attrs, int flags)
217 {
218 struct xfrmnl_sa* a = (struct xfrmnl_sa *) _a;
219 struct xfrmnl_sa* b = (struct xfrmnl_sa *) _b;
220 uint64_t diff = 0;
221 int found = 0;
222
223 #define XFRM_SA_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, XFRM_SA_ATTR_##ATTR, a, b, EXPR)
224 diff |= XFRM_SA_DIFF(SEL, xfrmnl_sel_cmp(a->sel, b->sel));
225 diff |= XFRM_SA_DIFF(DADDR, nl_addr_cmp(a->id.daddr, b->id.daddr));
226 diff |= XFRM_SA_DIFF(SPI, a->id.spi != b->id.spi);
227 diff |= XFRM_SA_DIFF(PROTO, a->id.proto != b->id.proto);
228 diff |= XFRM_SA_DIFF(SADDR, nl_addr_cmp(a->saddr, b->saddr));
229 diff |= XFRM_SA_DIFF(LTIME_CFG, xfrmnl_ltime_cfg_cmp(a->lft, b->lft));
230 diff |= XFRM_SA_DIFF(REQID, a->reqid != b->reqid);
231 diff |= XFRM_SA_DIFF(FAMILY,a->family != b->family);
232 diff |= XFRM_SA_DIFF(MODE,a->mode != b->mode);
233 diff |= XFRM_SA_DIFF(REPLAY_WIN,a->replay_window != b->replay_window);
234 diff |= XFRM_SA_DIFF(FLAGS,a->flags != b->flags);
235 diff |= XFRM_SA_DIFF(ALG_AEAD,(strcmp(a->aead->alg_name, b->aead->alg_name) ||
236 (a->aead->alg_key_len != b->aead->alg_key_len) ||
237 (a->aead->alg_icv_len != b->aead->alg_icv_len) ||
238 memcmp(a->aead->alg_key, b->aead->alg_key,
239 ((a->aead->alg_key_len + 7)/8))));
240 diff |= XFRM_SA_DIFF(ALG_AUTH,(strcmp(a->auth->alg_name, b->auth->alg_name) ||
241 (a->auth->alg_key_len != b->auth->alg_key_len) ||
242 (a->auth->alg_trunc_len != b->auth->alg_trunc_len) ||
243 memcmp(a->auth->alg_key, b->auth->alg_key,
244 ((a->auth->alg_key_len + 7)/8))));
245 diff |= XFRM_SA_DIFF(ALG_CRYPT,(strcmp(a->crypt->alg_name, b->crypt->alg_name) ||
246 (a->crypt->alg_key_len != b->crypt->alg_key_len) ||
247 memcmp(a->crypt->alg_key, b->crypt->alg_key,
248 ((a->crypt->alg_key_len + 7)/8))));
249 diff |= XFRM_SA_DIFF(ALG_COMP,(strcmp(a->comp->alg_name, b->comp->alg_name) ||
250 (a->comp->alg_key_len != b->comp->alg_key_len) ||
251 memcmp(a->comp->alg_key, b->comp->alg_key,
252 ((a->comp->alg_key_len + 7)/8))));
253 diff |= XFRM_SA_DIFF(ENCAP,((a->encap->encap_type != b->encap->encap_type) ||
254 (a->encap->encap_sport != b->encap->encap_sport) ||
255 (a->encap->encap_dport != b->encap->encap_dport) ||
256 nl_addr_cmp(a->encap->encap_oa, b->encap->encap_oa)));
257 diff |= XFRM_SA_DIFF(TFCPAD,a->tfcpad != b->tfcpad);
258 diff |= XFRM_SA_DIFF(COADDR,nl_addr_cmp(a->coaddr, b->coaddr));
259 diff |= XFRM_SA_DIFF(MARK,(a->mark.m != b->mark.m) ||
260 (a->mark.v != b->mark.v));
261 diff |= XFRM_SA_DIFF(SECCTX,((a->sec_ctx->ctx_doi != b->sec_ctx->ctx_doi) ||
262 (a->sec_ctx->ctx_alg != b->sec_ctx->ctx_alg) ||
263 (a->sec_ctx->ctx_len != b->sec_ctx->ctx_len) ||
264 strcmp(a->sec_ctx->ctx, b->sec_ctx->ctx)));
265 diff |= XFRM_SA_DIFF(REPLAY_MAXAGE,a->replay_maxage != b->replay_maxage);
266 diff |= XFRM_SA_DIFF(REPLAY_MAXDIFF,a->replay_maxdiff != b->replay_maxdiff);
267 diff |= XFRM_SA_DIFF(EXPIRE,a->hard != b->hard);
268
269 /* Compare replay states */
270 found = AVAILABLE_MISMATCH (a, b, XFRM_SA_ATTR_REPLAY_STATE);
271 if (found == 0) // attribute exists in both objects
272 {
273 if (((a->replay_state_esn != NULL) && (b->replay_state_esn == NULL)) ||
274 ((a->replay_state_esn == NULL) && (b->replay_state_esn != NULL)))
275 found |= 1;
276
277 if (found == 0) // same replay type. compare actual values
278 {
279 if (a->replay_state_esn)
280 {
281 if (a->replay_state_esn->bmp_len != b->replay_state_esn->bmp_len)
282 diff |= 1;
283 else
284 {
285 uint32_t len = sizeof (struct xfrmnl_replay_state_esn) +
286 (a->replay_state_esn->bmp_len * sizeof (uint32_t));
287 diff |= memcmp (a->replay_state_esn, b->replay_state_esn, len);
288 }
289 }
290 else
291 {
292 if ((a->replay_state.oseq != b->replay_state.oseq) ||
293 (a->replay_state.seq != b->replay_state.seq) ||
294 (a->replay_state.bitmap != b->replay_state.bitmap))
295 diff |= 1;
296 }
297 }
298 }
299 #undef XFRM_SA_DIFF
300
301 return diff;
302 }
303
304 /**
305 * @name XFRM SA Attribute Translations
306 * @{
307 */
308 static const struct trans_tbl sa_attrs[] = {
309 __ADD(XFRM_SA_ATTR_SEL, selector),
310 __ADD(XFRM_SA_ATTR_DADDR, daddr),
311 __ADD(XFRM_SA_ATTR_SPI, spi),
312 __ADD(XFRM_SA_ATTR_PROTO, proto),
313 __ADD(XFRM_SA_ATTR_SADDR, saddr),
314 __ADD(XFRM_SA_ATTR_LTIME_CFG, lifetime_cfg),
315 __ADD(XFRM_SA_ATTR_LTIME_CUR, lifetime_cur),
316 __ADD(XFRM_SA_ATTR_STATS, stats),
317 __ADD(XFRM_SA_ATTR_SEQ, seqnum),
318 __ADD(XFRM_SA_ATTR_REQID, reqid),
319 __ADD(XFRM_SA_ATTR_FAMILY, family),
320 __ADD(XFRM_SA_ATTR_MODE, mode),
321 __ADD(XFRM_SA_ATTR_REPLAY_WIN, replay_window),
322 __ADD(XFRM_SA_ATTR_FLAGS, flags),
323 __ADD(XFRM_SA_ATTR_ALG_AEAD, alg_aead),
324 __ADD(XFRM_SA_ATTR_ALG_AUTH, alg_auth),
325 __ADD(XFRM_SA_ATTR_ALG_CRYPT, alg_crypto),
326 __ADD(XFRM_SA_ATTR_ALG_COMP, alg_comp),
327 __ADD(XFRM_SA_ATTR_ENCAP, encap),
328 __ADD(XFRM_SA_ATTR_TFCPAD, tfcpad),
329 __ADD(XFRM_SA_ATTR_COADDR, coaddr),
330 __ADD(XFRM_SA_ATTR_MARK, mark),
331 __ADD(XFRM_SA_ATTR_SECCTX, sec_ctx),
332 __ADD(XFRM_SA_ATTR_REPLAY_MAXAGE, replay_maxage),
333 __ADD(XFRM_SA_ATTR_REPLAY_MAXDIFF, replay_maxdiff),
334 __ADD(XFRM_SA_ATTR_REPLAY_STATE, replay_state),
335 __ADD(XFRM_SA_ATTR_EXPIRE, expire),
336 };
337
338 static char* xfrm_sa_attrs2str(int attrs, char *buf, size_t len)
339 {
340 return __flags2str (attrs, buf, len, sa_attrs, ARRAY_SIZE(sa_attrs));
341 }
342 /** @} */
343
344 /**
345 * @name XFRM SA Flags Translations
346 * @{
347 */
348 static const struct trans_tbl sa_flags[] = {
349 __ADD(XFRM_STATE_NOECN, no ecn),
350 __ADD(XFRM_STATE_DECAP_DSCP, decap dscp),
351 __ADD(XFRM_STATE_NOPMTUDISC, no pmtu discovery),
352 __ADD(XFRM_STATE_WILDRECV, wild receive),
353 __ADD(XFRM_STATE_ICMP, icmp),
354 __ADD(XFRM_STATE_AF_UNSPEC, unspecified),
355 __ADD(XFRM_STATE_ALIGN4, align4),
356 __ADD(XFRM_STATE_ESN, esn),
357 };
358
359 char* xfrmnl_sa_flags2str(int flags, char *buf, size_t len)
360 {
361 return __flags2str (flags, buf, len, sa_flags, ARRAY_SIZE(sa_flags));
362 }
363
364 int xfrmnl_sa_str2flag(const char *name)
365 {
366 return __str2flags (name, sa_flags, ARRAY_SIZE(sa_flags));
367 }
368 /** @} */
369
370 /**
371 * @name XFRM SA Mode Translations
372 * @{
373 */
374 static const struct trans_tbl sa_modes[] = {
375 __ADD(XFRM_MODE_TRANSPORT, transport),
376 __ADD(XFRM_MODE_TUNNEL, tunnel),
377 __ADD(XFRM_MODE_ROUTEOPTIMIZATION, route optimization),
378 __ADD(XFRM_MODE_IN_TRIGGER, in trigger),
379 __ADD(XFRM_MODE_BEET, beet),
380 };
381
382 char* xfrmnl_sa_mode2str(int mode, char *buf, size_t len)
383 {
384 return __type2str (mode, buf, len, sa_modes, ARRAY_SIZE(sa_modes));
385 }
386
387 int xfrmnl_sa_str2mode(const char *name)
388 {
389 return __str2type (name, sa_modes, ARRAY_SIZE(sa_modes));
390 }
391 /** @} */
392
393
394 static void xfrm_sa_dump_line(struct nl_object *a, struct nl_dump_params *p)
395 {
396 char dst[INET6_ADDRSTRLEN+5], src[INET6_ADDRSTRLEN+5];
397 struct xfrmnl_sa* sa = (struct xfrmnl_sa *) a;
398 char flags[128], mode[128];
399 time_t add_time, use_time;
400 struct tm *add_time_tm, *use_time_tm;
401
402 nl_dump_line(p, "src %s dst %s family: %s\n", nl_addr2str(sa->saddr, src, sizeof(src)),
403 nl_addr2str(sa->id.daddr, dst, sizeof(dst)),
404 nl_af2str (sa->family, flags, sizeof (flags)));
405
406 nl_dump_line(p, "\tproto %s spi 0x%x reqid %u\n",
407 nl_ip_proto2str (sa->id.proto, flags, sizeof(flags)),
408 sa->id.spi, sa->reqid);
409
410 xfrmnl_sa_flags2str(sa->flags, flags, sizeof (flags));
411 xfrmnl_sa_mode2str(sa->mode, mode, sizeof (mode));
412 nl_dump_line(p, "\tmode: %s flags: %s (0x%x) seq: %u replay window: %u\n",
413 mode, flags, sa->flags, sa->seq, sa->replay_window);
414
415 nl_dump_line(p, "\tlifetime configuration: \n");
416 if (sa->lft->soft_byte_limit == XFRM_INF)
417 sprintf (flags, "INF");
418 else
419 sprintf (flags, "%" PRIu64, sa->lft->soft_byte_limit);
420 if (sa->lft->soft_packet_limit == XFRM_INF)
421 sprintf (mode, "INF");
422 else
423 sprintf (mode, "%" PRIu64, sa->lft->soft_packet_limit);
424 nl_dump_line(p, "\t\tsoft limit: %s (bytes), %s (packets)\n", flags, mode);
425 if (sa->lft->hard_byte_limit == XFRM_INF)
426 sprintf (flags, "INF");
427 else
428 sprintf (flags, "%" PRIu64, sa->lft->hard_byte_limit);
429 if (sa->lft->hard_packet_limit == XFRM_INF)
430 sprintf (mode, "INF");
431 else
432 sprintf (mode, "%" PRIu64, sa->lft->hard_packet_limit);
433 nl_dump_line(p, "\t\thard limit: %s (bytes), %s (packets)\n", flags, mode);
434 nl_dump_line(p, "\t\tsoft add_time: %llu (seconds), soft use_time: %llu (seconds) \n",
435 sa->lft->soft_add_expires_seconds, sa->lft->soft_use_expires_seconds);
436 nl_dump_line(p, "\t\thard add_time: %llu (seconds), hard use_time: %llu (seconds) \n",
437 sa->lft->hard_add_expires_seconds, sa->lft->hard_use_expires_seconds);
438
439 nl_dump_line(p, "\tlifetime current: \n");
440 nl_dump_line(p, "\t\t%llu bytes, %llu packets\n", sa->curlft.bytes, sa->curlft.packets);
441 if (sa->curlft.add_time != 0)
442 {
443 add_time = sa->curlft.add_time;
444 add_time_tm = gmtime (&add_time);
445 strftime (flags, 128, "%Y-%m-%d %H-%M-%S", add_time_tm);
446 }
447 else
448 {
449 sprintf (flags, "%s", "-");
450 }
451
452 if (sa->curlft.use_time != 0)
453 {
454 use_time = sa->curlft.use_time;
455 use_time_tm = gmtime (&use_time);
456 strftime (mode, 128, "%Y-%m-%d %H-%M-%S", use_time_tm);
457 }
458 else
459 {
460 sprintf (mode, "%s", "-");
461 }
462 nl_dump_line(p, "\t\tadd_time: %s, use_time: %s\n", flags, mode);
463
464 if (sa->aead)
465 {
466 nl_dump_line(p, "\tAEAD Algo: \n");
467 nl_dump_line(p, "\t\tName: %s Key len(bits): %u ICV Len(bits): %u\n",
468 sa->aead->alg_name, sa->aead->alg_key_len, sa->aead->alg_icv_len);
469 }
470
471 if (sa->auth)
472 {
473 nl_dump_line(p, "\tAuth Algo: \n");
474 nl_dump_line(p, "\t\tName: %s Key len(bits): %u Trunc len(bits): %u\n",
475 sa->auth->alg_name, sa->auth->alg_key_len, sa->auth->alg_trunc_len);
476 }
477
478 if (sa->crypt)
479 {
480 nl_dump_line(p, "\tEncryption Algo: \n");
481 nl_dump_line(p, "\t\tName: %s Key len(bits): %u\n",
482 sa->crypt->alg_name, sa->crypt->alg_key_len);
483 }
484
485 if (sa->comp)
486 {
487 nl_dump_line(p, "\tCompression Algo: \n");
488 nl_dump_line(p, "\t\tName: %s Key len(bits): %u\n",
489 sa->comp->alg_name, sa->comp->alg_key_len);
490 }
491
492 if (sa->encap)
493 {
494 nl_dump_line(p, "\tEncapsulation template: \n");
495 nl_dump_line(p, "\t\tType: %d Src port: %d Dst port: %d Encap addr: %s\n",
496 sa->encap->encap_type, sa->encap->encap_sport, sa->encap->encap_dport,
497 nl_addr2str (sa->encap->encap_oa, dst, sizeof (dst)));
498 }
499
500 if (sa->ce_mask & XFRM_SA_ATTR_TFCPAD)
501 nl_dump_line(p, "\tTFC Pad: %u\n", sa->tfcpad);
502
503 if (sa->ce_mask & XFRM_SA_ATTR_COADDR)
504 nl_dump_line(p, "\tCO Address: %s\n", nl_addr2str (sa->coaddr, dst, sizeof (dst)));
505
506 if (sa->ce_mask & XFRM_SA_ATTR_MARK)
507 nl_dump_line(p, "\tMark mask: 0x%x Mark value: 0x%x\n", sa->mark.m, sa->mark.v);
508
509 if (sa->ce_mask & XFRM_SA_ATTR_SECCTX)
510 nl_dump_line(p, "\tDOI: %d Algo: %d Len: %u ctx: %s\n", sa->sec_ctx->ctx_doi,
511 sa->sec_ctx->ctx_alg, sa->sec_ctx->ctx_len, sa->sec_ctx->ctx);
512
513 nl_dump_line(p, "\treplay info: \n");
514 nl_dump_line(p, "\t\tmax age %u max diff %u \n", sa->replay_maxage, sa->replay_maxdiff);
515
516 if (sa->ce_mask & XFRM_SA_ATTR_REPLAY_STATE)
517 {
518 nl_dump_line(p, "\treplay state info: \n");
519 if (sa->replay_state_esn)
520 {
521 nl_dump_line(p, "\t\toseq %u seq %u oseq_hi %u seq_hi %u replay window: %u \n",
522 sa->replay_state_esn->oseq, sa->replay_state_esn->seq,
523 sa->replay_state_esn->oseq_hi, sa->replay_state_esn->seq_hi,
524 sa->replay_state_esn->replay_window);
525 }
526 else
527 {
528 nl_dump_line(p, "\t\toseq %u seq %u bitmap: %u \n", sa->replay_state.oseq,
529 sa->replay_state.seq, sa->replay_state.bitmap);
530 }
531 }
532
533 nl_dump_line(p, "\tselector info: \n");
534 xfrmnl_sel_dump (sa->sel, p);
535
536 nl_dump_line(p, "\tHard: %d\n", sa->hard);
537
538 nl_dump(p, "\n");
539 }
540
541 static void xfrm_sa_dump_stats(struct nl_object *a, struct nl_dump_params *p)
542 {
543 struct xfrmnl_sa* sa = (struct xfrmnl_sa*)a;
544
545 nl_dump_line(p, "\tstats: \n");
546 nl_dump_line(p, "\t\treplay window: %u replay: %u integrity failed: %u \n",
547 sa->stats.replay_window, sa->stats.replay, sa->stats.integrity_failed);
548
549 return;
550 }
551
552 static void xfrm_sa_dump_details(struct nl_object *a, struct nl_dump_params *p)
553 {
554 xfrm_sa_dump_line(a, p);
555 xfrm_sa_dump_stats (a, p);
556 }
557
558 /**
559 * @name XFRM SA Object Allocation/Freeage
560 * @{
561 */
562
563 struct xfrmnl_sa* xfrmnl_sa_alloc(void)
564 {
565 return (struct xfrmnl_sa*) nl_object_alloc(&xfrm_sa_obj_ops);
566 }
567
568 void xfrmnl_sa_put(struct xfrmnl_sa* sa)
569 {
570 nl_object_put((struct nl_object *) sa);
571 }
572
573 /** @} */
574
575 /**
576 * @name SA Cache Managament
577 * @{
578 */
579
580 /**
581 * Build a SA cache including all SAs currently configured in the kernel.
582 * @arg sock Netlink socket.
583 * @arg result Pointer to store resulting cache.
584 *
585 * Allocates a new SA cache, initializes it properly and updates it
586 * to include all SAs currently configured in the kernel.
587 *
588 * @return 0 on success or a negative error code.
589 */
590 int xfrmnl_sa_alloc_cache(struct nl_sock *sock, struct nl_cache **result)
591 {
592 return nl_cache_alloc_and_fill(&xfrmnl_sa_ops, sock, result);
593 }
594
595 /**
596 * Look up a SA by destination address, SPI, protocol
597 * @arg cache SA cache
598 * @arg daddr destination address of the SA
599 * @arg spi SPI
600 * @arg proto protocol
601 * @return sa handle or NULL if no match was found.
602 */
603 struct xfrmnl_sa* xfrmnl_sa_get(struct nl_cache* cache, struct nl_addr* daddr,
604 unsigned int spi, unsigned int proto)
605 {
606 struct xfrmnl_sa *sa;
607
608 //nl_list_for_each_entry(sa, &cache->c_items, ce_list) {
609 for (sa = (struct xfrmnl_sa*)nl_cache_get_first (cache);
610 sa != NULL;
611 sa = (struct xfrmnl_sa*)nl_cache_get_next ((struct nl_object*)sa))
612 {
613 if (sa->id.proto == proto &&
614 sa->id.spi == spi &&
615 !nl_addr_cmp(sa->id.daddr, daddr))
616 {
617 nl_object_get((struct nl_object *) sa);
618 return sa;
619 }
620
621 }
622
623 return NULL;
624 }
625
626
627 /** @} */
628
629
630 static struct nla_policy xfrm_sa_policy[XFRMA_MAX+1] = {
631 [XFRMA_SA] = { .minlen = sizeof(struct xfrm_usersa_info)},
632 [XFRMA_ALG_AUTH_TRUNC] = { .minlen = sizeof(struct xfrm_algo_auth)},
633 [XFRMA_ALG_AEAD] = { .minlen = sizeof(struct xfrm_algo_aead) },
634 [XFRMA_ALG_AUTH] = { .minlen = sizeof(struct xfrm_algo) },
635 [XFRMA_ALG_CRYPT] = { .minlen = sizeof(struct xfrm_algo) },
636 [XFRMA_ALG_COMP] = { .minlen = sizeof(struct xfrm_algo) },
637 [XFRMA_ENCAP] = { .minlen = sizeof(struct xfrm_encap_tmpl) },
638 [XFRMA_TMPL] = { .minlen = sizeof(struct xfrm_user_tmpl) },
639 [XFRMA_SEC_CTX] = { .minlen = sizeof(struct xfrm_sec_ctx) },
640 [XFRMA_LTIME_VAL] = { .minlen = sizeof(struct xfrm_lifetime_cur) },
641 [XFRMA_REPLAY_VAL] = { .minlen = sizeof(struct xfrm_replay_state) },
642 [XFRMA_REPLAY_THRESH] = { .type = NLA_U32 },
643 [XFRMA_ETIMER_THRESH] = { .type = NLA_U32 },
644 [XFRMA_SRCADDR] = { .minlen = sizeof(xfrm_address_t) },
645 [XFRMA_COADDR] = { .minlen = sizeof(xfrm_address_t) },
646 [XFRMA_MARK] = { .minlen = sizeof(struct xfrm_mark) },
647 [XFRMA_TFCPAD] = { .type = NLA_U32 },
648 [XFRMA_REPLAY_ESN_VAL] = { .minlen = sizeof(struct xfrm_replay_state_esn) },
649 };
650
651 static int xfrm_sa_request_update(struct nl_cache *c, struct nl_sock *h)
652 {
653 struct xfrm_id sa_id;
654
655 memset (&sa_id, 0, sizeof (sa_id));
656 return nl_send_simple (h, XFRM_MSG_GETSA, NLM_F_DUMP,
657 &sa_id, sizeof (sa_id));
658 }
659
660 int xfrmnl_sa_parse(struct nlmsghdr *n, struct xfrmnl_sa **result)
661 {
662 struct xfrmnl_sa* sa;
663 struct nlattr *tb[XFRMA_MAX + 1];
664 struct xfrm_usersa_info* sa_info;
665 struct xfrm_user_expire* ue;
666 int len, err;
667 struct nl_addr* addr;
668
669 sa = xfrmnl_sa_alloc();
670 if (!sa) {
671 err = -NLE_NOMEM;
672 goto errout;
673 }
674
675 sa->ce_msgtype = n->nlmsg_type;
676 if (n->nlmsg_type == XFRM_MSG_EXPIRE)
677 {
678 ue = nlmsg_data(n);
679 sa_info = &ue->state;
680 sa->hard = ue->hard;
681 sa->ce_mask |= XFRM_SA_ATTR_EXPIRE;
682 }
683 else if (n->nlmsg_type == XFRM_MSG_DELSA)
684 {
685 sa_info = (struct xfrm_usersa_info*)((char *)nlmsg_data(n) + sizeof (struct xfrm_usersa_id) + NLA_HDRLEN);
686 }
687 else
688 {
689 sa_info = nlmsg_data(n);
690 }
691
692 err = nlmsg_parse(n, sizeof(struct xfrm_usersa_info), tb, XFRMA_MAX, xfrm_sa_policy);
693 if (err < 0)
694 goto errout;
695
696 if (sa_info->sel.family == AF_INET)
697 addr = nl_addr_build (sa_info->sel.family, &sa_info->sel.daddr.a4, sizeof (sa_info->sel.daddr.a4));
698 else
699 addr = nl_addr_build (sa_info->sel.family, &sa_info->sel.daddr.a6, sizeof (sa_info->sel.daddr.a6));
700 nl_addr_set_prefixlen (addr, sa_info->sel.prefixlen_d);
701 xfrmnl_sel_set_daddr (sa->sel, addr);
702 xfrmnl_sel_set_prefixlen_d (sa->sel, sa_info->sel.prefixlen_d);
703
704 if (sa_info->sel.family == AF_INET)
705 addr = nl_addr_build (sa_info->sel.family, &sa_info->sel.saddr.a4, sizeof (sa_info->sel.saddr.a4));
706 else
707 addr = nl_addr_build (sa_info->sel.family, &sa_info->sel.saddr.a6, sizeof (sa_info->sel.saddr.a6));
708 nl_addr_set_prefixlen (addr, sa_info->sel.prefixlen_s);
709 xfrmnl_sel_set_saddr (sa->sel, addr);
710 xfrmnl_sel_set_prefixlen_s (sa->sel, sa_info->sel.prefixlen_s);
711
712 xfrmnl_sel_set_dport (sa->sel, ntohs(sa_info->sel.dport));
713 xfrmnl_sel_set_dportmask (sa->sel, ntohs(sa_info->sel.dport_mask));
714 xfrmnl_sel_set_sport (sa->sel, ntohs(sa_info->sel.sport));
715 xfrmnl_sel_set_sportmask (sa->sel, ntohs(sa_info->sel.sport_mask));
716 xfrmnl_sel_set_family (sa->sel, sa_info->sel.family);
717 xfrmnl_sel_set_proto (sa->sel, sa_info->sel.proto);
718 xfrmnl_sel_set_ifindex (sa->sel, sa_info->sel.ifindex);
719 xfrmnl_sel_set_userid (sa->sel, sa_info->sel.user);
720 sa->ce_mask |= XFRM_SA_ATTR_SEL;
721
722 if (sa_info->family == AF_INET)
723 sa->id.daddr = nl_addr_build (sa_info->family, &sa_info->id.daddr.a4, sizeof (sa_info->id.daddr.a4));
724 else
725 sa->id.daddr = nl_addr_build (sa_info->family, &sa_info->id.daddr.a6, sizeof (sa_info->id.daddr.a6));
726 sa->id.spi = ntohl(sa_info->id.spi);
727 sa->id.proto = sa_info->id.proto;
728 sa->ce_mask |= (XFRM_SA_ATTR_DADDR | XFRM_SA_ATTR_SPI | XFRM_SA_ATTR_PROTO);
729
730 if (sa_info->family == AF_INET)
731 sa->saddr = nl_addr_build (sa_info->family, &sa_info->saddr.a4, sizeof (sa_info->saddr.a4));
732 else
733 sa->saddr = nl_addr_build (sa_info->family, &sa_info->saddr.a6, sizeof (sa_info->saddr.a6));
734 sa->ce_mask |= XFRM_SA_ATTR_SADDR;
735
736 sa->lft->soft_byte_limit = sa_info->lft.soft_byte_limit;
737 sa->lft->hard_byte_limit = sa_info->lft.hard_byte_limit;
738 sa->lft->soft_packet_limit = sa_info->lft.soft_packet_limit;
739 sa->lft->hard_packet_limit = sa_info->lft.hard_packet_limit;
740 sa->lft->soft_add_expires_seconds = sa_info->lft.soft_add_expires_seconds;
741 sa->lft->hard_add_expires_seconds = sa_info->lft.hard_add_expires_seconds;
742 sa->lft->soft_use_expires_seconds = sa_info->lft.soft_use_expires_seconds;
743 sa->lft->hard_use_expires_seconds = sa_info->lft.hard_use_expires_seconds;
744 sa->ce_mask |= XFRM_SA_ATTR_LTIME_CFG;
745
746 sa->curlft.bytes = sa_info->curlft.bytes;
747 sa->curlft.packets = sa_info->curlft.packets;
748 sa->curlft.add_time = sa_info->curlft.add_time;
749 sa->curlft.use_time = sa_info->curlft.use_time;
750 sa->ce_mask |= XFRM_SA_ATTR_LTIME_CUR;
751
752 sa->stats.replay_window = sa_info->stats.replay_window;
753 sa->stats.replay = sa_info->stats.replay;
754 sa->stats.integrity_failed = sa_info->stats.integrity_failed;
755 sa->ce_mask |= XFRM_SA_ATTR_STATS;
756
757 sa->seq = sa_info->seq;
758 sa->reqid = sa_info->reqid;
759 sa->family = sa_info->family;
760 sa->mode = sa_info->mode;
761 sa->replay_window = sa_info->replay_window;
762 sa->flags = sa_info->flags;
763 sa->ce_mask |= (XFRM_SA_ATTR_SEQ | XFRM_SA_ATTR_REQID |
764 XFRM_SA_ATTR_FAMILY | XFRM_SA_ATTR_MODE |
765 XFRM_SA_ATTR_REPLAY_WIN | XFRM_SA_ATTR_FLAGS);
766
767 if (tb[XFRMA_ALG_AEAD]) {
768 struct xfrm_algo_aead* aead = nla_data(tb[XFRMA_ALG_AEAD]);
769 len = sizeof (struct xfrmnl_algo_aead) + ((aead->alg_key_len + 7) / 8);
770 if ((sa->aead = calloc (1, len)) == NULL)
771 {
772 err = -NLE_NOMEM;
773 goto errout;
774 }
775 memcpy ((void *)sa->aead, (void *)aead, len);
776 sa->ce_mask |= XFRM_SA_ATTR_ALG_AEAD;
777 }
778
779 if (tb[XFRMA_ALG_AUTH_TRUNC]) {
780 struct xfrm_algo_auth* auth = nla_data(tb[XFRMA_ALG_AUTH_TRUNC]);
781 len = sizeof (struct xfrmnl_algo_auth) + ((auth->alg_key_len + 7) / 8);
782 if ((sa->auth = calloc (1, len)) == NULL)
783 {
784 err = -NLE_NOMEM;
785 goto errout;
786 }
787 memcpy ((void *)sa->auth, (void *)auth, len);
788 sa->ce_mask |= XFRM_SA_ATTR_ALG_AUTH;
789 }
790
791 if (tb[XFRMA_ALG_AUTH] && !sa->auth) {
792 struct xfrm_algo* auth = nla_data(tb[XFRMA_ALG_AUTH]);
793 len = sizeof (struct xfrmnl_algo_auth) + ((auth->alg_key_len + 7) / 8);
794 if ((sa->auth = calloc (1, len)) == NULL)
795 {
796 err = -NLE_NOMEM;
797 goto errout;
798 }
799 strcpy(sa->auth->alg_name, auth->alg_name);
800 memcpy(sa->auth->alg_key, auth->alg_key, (auth->alg_key_len + 7) / 8);
801 sa->auth->alg_key_len = auth->alg_key_len;
802 sa->ce_mask |= XFRM_SA_ATTR_ALG_AUTH;
803 }
804
805 if (tb[XFRMA_ALG_CRYPT]) {
806 struct xfrm_algo* crypt = nla_data(tb[XFRMA_ALG_CRYPT]);
807 len = sizeof (struct xfrmnl_algo) + ((crypt->alg_key_len + 7) / 8);
808 if ((sa->crypt = calloc (1, len)) == NULL)
809 {
810 err = -NLE_NOMEM;
811 goto errout;
812 }
813 memcpy ((void *)sa->crypt, (void *)crypt, len);
814 sa->ce_mask |= XFRM_SA_ATTR_ALG_CRYPT;
815 }
816
817 if (tb[XFRMA_ALG_COMP]) {
818 struct xfrm_algo* comp = nla_data(tb[XFRMA_ALG_COMP]);
819 len = sizeof (struct xfrmnl_algo) + ((comp->alg_key_len + 7) / 8);
820 if ((sa->comp = calloc (1, len)) == NULL)
821 {
822 err = -NLE_NOMEM;
823 goto errout;
824 }
825 memcpy ((void *)sa->comp, (void *)comp, len);
826 sa->ce_mask |= XFRM_SA_ATTR_ALG_COMP;
827 }
828
829 if (tb[XFRMA_ENCAP]) {
830 struct xfrm_encap_tmpl* encap = nla_data(tb[XFRMA_ENCAP]);
831 len = sizeof (struct xfrmnl_encap_tmpl);
832 if ((sa->encap = calloc (1, len)) == NULL)
833 {
834 err = -NLE_NOMEM;
835 goto errout;
836 }
837 sa->encap->encap_type = encap->encap_type;
838 sa->encap->encap_sport = ntohs(encap->encap_sport);
839 sa->encap->encap_dport = ntohs(encap->encap_dport);
840 if (sa_info->family == AF_INET)
841 sa->encap->encap_oa = nl_addr_build (sa_info->family, &encap->encap_oa.a4, sizeof (encap->encap_oa.a4));
842 else
843 sa->encap->encap_oa = nl_addr_build (sa_info->family, &encap->encap_oa.a6, sizeof (encap->encap_oa.a6));
844 sa->ce_mask |= XFRM_SA_ATTR_ENCAP;
845 }
846
847 if (tb[XFRMA_TFCPAD]) {
848 sa->tfcpad = *(uint32_t*)nla_data(tb[XFRMA_TFCPAD]);
849 sa->ce_mask |= XFRM_SA_ATTR_TFCPAD;
850 }
851
852 if (tb[XFRMA_COADDR]) {
853 if (sa_info->family == AF_INET)
854 {
855 sa->coaddr = nl_addr_build(sa_info->family, nla_data(tb[XFRMA_COADDR]),
856 sizeof (uint32_t));
857 }
858 else
859 {
860 sa->coaddr = nl_addr_build(sa_info->family, nla_data(tb[XFRMA_COADDR]),
861 sizeof (uint32_t) * 4);
862 }
863 sa->ce_mask |= XFRM_SA_ATTR_COADDR;
864 }
865
866 if (tb[XFRMA_MARK]) {
867 struct xfrm_mark* m = nla_data(tb[XFRMA_MARK]);
868 sa->mark.m = m->m;
869 sa->mark.v = m->v;
870 sa->ce_mask |= XFRM_SA_ATTR_MARK;
871 }
872
873 if (tb[XFRMA_SEC_CTX]) {
874 struct xfrm_user_sec_ctx* sec_ctx = nla_data(tb[XFRMA_SEC_CTX]);
875 len = sizeof (struct xfrmnl_user_sec_ctx) + sec_ctx->ctx_len;
876 if ((sa->sec_ctx = calloc (1, len)) == NULL)
877 {
878 err = -NLE_NOMEM;
879 goto errout;
880 }
881 memcpy (sa->sec_ctx, sec_ctx, len);
882 sa->ce_mask |= XFRM_SA_ATTR_SECCTX;
883 }
884
885 if (tb[XFRMA_ETIMER_THRESH]) {
886 sa->replay_maxage = *(uint32_t*)nla_data(tb[XFRMA_ETIMER_THRESH]);
887 sa->ce_mask |= XFRM_SA_ATTR_REPLAY_MAXAGE;
888 }
889
890 if (tb[XFRMA_REPLAY_THRESH]) {
891 sa->replay_maxdiff = *(uint32_t*)nla_data(tb[XFRMA_REPLAY_THRESH]);
892 sa->ce_mask |= XFRM_SA_ATTR_REPLAY_MAXDIFF;
893 }
894
895 if (tb[XFRMA_REPLAY_ESN_VAL]) {
896 struct xfrm_replay_state_esn* esn = nla_data (tb[XFRMA_REPLAY_ESN_VAL]);
897 len = sizeof (struct xfrmnl_replay_state_esn) + (sizeof (uint32_t) * esn->bmp_len);
898 if ((sa->replay_state_esn = calloc (1, len)) == NULL)
899 {
900 err = -NLE_NOMEM;
901 goto errout;
902 }
903 memcpy ((void *)sa->replay_state_esn, (void *)esn, len);
904 sa->ce_mask |= XFRM_SA_ATTR_REPLAY_STATE;
905 }
906 else if (tb[XFRMA_REPLAY_VAL])
907 {
908 struct xfrm_replay_state* replay_state = nla_data (tb[XFRMA_REPLAY_VAL]);
909 sa->replay_state.oseq = replay_state->oseq;
910 sa->replay_state.seq = replay_state->seq;
911 sa->replay_state.bitmap = replay_state->bitmap;
912 sa->ce_mask |= XFRM_SA_ATTR_REPLAY_STATE;
913 sa->replay_state_esn = NULL;
914 }
915
916 *result = sa;
917 return 0;
918
919 errout:
920 xfrmnl_sa_put(sa);
921 return err;
922 }
923
924 static int xfrm_sa_update_cache (struct nl_cache *cache, struct nl_object *obj,
925 change_func_t change_cb, change_func_v2_t change_cb_v2,
926 void *data)
927 {
928 struct nl_object* old_sa;
929 struct xfrmnl_sa* sa = (struct xfrmnl_sa*)obj;
930
931 if (nl_object_get_msgtype (obj) == XFRM_MSG_EXPIRE)
932 {
933 /* On hard expiry, the SA gets deleted too from the kernel state without any
934 * further delete event. On Expire message, we are only updating the cache with
935 * the SA object's new state. In absence of the explicit delete event, the cache will
936 * be out of sync with the kernel state. To get around this, expiry messages cache
937 * operations are handled here (installed with NL_ACT_UNSPEC action) instead of
938 * in Libnl Cache module. */
939
940 /* Do we already have this object in the cache? */
941 old_sa = nl_cache_search(cache, obj);
942 if (old_sa)
943 {
944 /* Found corresponding SA object in cache. Delete it */
945 nl_cache_remove (old_sa);
946 }
947
948 /* Handle the expiry event now */
949 if (sa->hard == 0)
950 {
951 /* Soft expiry event: Save the new object to the
952 * cache and notify application of the expiry event. */
953 nl_cache_move (cache, obj);
954
955 if (old_sa == NULL)
956 {
957 /* Application CB present, no previous instance of SA object present.
958 * Notify application CB as a NEW event */
959 if (change_cb_v2)
960 change_cb_v2(cache, NULL, obj, 0, NL_ACT_NEW, data);
961 else if (change_cb)
962 change_cb(cache, obj, NL_ACT_NEW, data);
963 }
964 else if (old_sa)
965 {
966 uint64_t diff = 0;
967 if (change_cb || change_cb_v2)
968 diff = nl_object_diff64(old_sa, obj);
969
970 /* Application CB present, a previous instance of SA object present.
971 * Notify application CB as a CHANGE1 event */
972 if (diff) {
973 if (change_cb_v2) {
974 change_cb_v2(cache, old_sa, obj, diff, NL_ACT_CHANGE, data);
975 } else if (change_cb)
976 change_cb(cache, obj, NL_ACT_CHANGE, data);
977 }
978 nl_object_put (old_sa);
979 }
980 }
981 else
982 {
983 /* Hard expiry event: Delete the object from the
984 * cache and notify application of the expiry event. */
985 if (change_cb_v2)
986 change_cb_v2(cache, obj, NULL, 0, NL_ACT_DEL, data);
987 else if (change_cb)
988 change_cb (cache, obj, NL_ACT_DEL, data);
989 nl_object_put (old_sa);
990 }
991
992 /* Done handling expire message */
993 return 0;
994 }
995 else
996 {
997 /* All other messages other than Expire, let the standard Libnl cache
998 * module handle it. */
999 if (change_cb_v2)
1000 return nl_cache_include_v2(cache, obj, change_cb_v2, data);
1001 else
1002 return nl_cache_include (cache, obj, change_cb, data);
1003 }
1004 }
1005
1006 static int xfrm_sa_msg_parser(struct nl_cache_ops *ops, struct sockaddr_nl *who,
1007 struct nlmsghdr *n, struct nl_parser_param *pp)
1008 {
1009 struct xfrmnl_sa* sa;
1010 int err;
1011
1012 if ((err = xfrmnl_sa_parse(n, &sa)) < 0)
1013 return err;
1014
1015 err = pp->pp_cb((struct nl_object *) sa, pp);
1016
1017 xfrmnl_sa_put(sa);
1018 return err;
1019 }
1020
1021 /**
1022 * @name XFRM SA Get
1023 * @{
1024 */
1025
1026 int xfrmnl_sa_build_get_request(struct nl_addr* daddr, unsigned int spi, unsigned int protocol, unsigned int mark_v, unsigned int mark_m, struct nl_msg **result)
1027 {
1028 struct nl_msg *msg;
1029 struct xfrm_usersa_id sa_id;
1030 struct xfrm_mark mark;
1031
1032 if (!daddr || !spi)
1033 {
1034 fprintf(stderr, "APPLICATION BUG: %s:%d:%s: A valid destination address, spi must be specified\n",
1035 __FILE__, __LINE__, __func__);
1036 assert(0);
1037 return -NLE_MISSING_ATTR;
1038 }
1039
1040 memset(&sa_id, 0, sizeof(sa_id));
1041 memcpy (&sa_id.daddr, nl_addr_get_binary_addr (daddr), sizeof (uint8_t) * nl_addr_get_len (daddr));
1042 sa_id.family = nl_addr_get_family (daddr);
1043 sa_id.spi = htonl(spi);
1044 sa_id.proto = protocol;
1045
1046 if (!(msg = nlmsg_alloc_simple(XFRM_MSG_GETSA, 0)))
1047 return -NLE_NOMEM;
1048
1049 if (nlmsg_append(msg, &sa_id, sizeof(sa_id), NLMSG_ALIGNTO) < 0)
1050 goto nla_put_failure;
1051
1052 if ((mark_m & mark_v) != 0)
1053 {
1054 memset(&mark, 0, sizeof(struct xfrm_mark));
1055 mark.m = mark_m;
1056 mark.v = mark_v;
1057
1058 NLA_PUT (msg, XFRMA_MARK, sizeof (struct xfrm_mark), &mark);
1059 }
1060
1061 *result = msg;
1062 return 0;
1063
1064 nla_put_failure:
1065 nlmsg_free(msg);
1066 return -NLE_MSGSIZE;
1067 }
1068
1069 int xfrmnl_sa_get_kernel(struct nl_sock* sock, struct nl_addr* daddr, unsigned int spi, unsigned int protocol, unsigned int mark_v, unsigned int mark_m, struct xfrmnl_sa** result)
1070 {
1071 struct nl_msg *msg = NULL;
1072 struct nl_object *obj;
1073 int err;
1074
1075 if ((err = xfrmnl_sa_build_get_request(daddr, spi, protocol, mark_m, mark_v, &msg)) < 0)
1076 return err;
1077
1078 err = nl_send_auto(sock, msg);
1079 nlmsg_free(msg);
1080 if (err < 0)
1081 return err;
1082
1083 if ((err = nl_pickup(sock, &xfrm_sa_msg_parser, &obj)) < 0)
1084 return err;
1085
1086 /* We have used xfrm_sa_msg_parser(), object is definitely a xfrm sa */
1087 *result = (struct xfrmnl_sa *) obj;
1088
1089 /* If an object has been returned, we also need to wait for the ACK */
1090 if (err == 0 && obj)
1091 nl_wait_for_ack(sock);
1092
1093 return 0;
1094 }
1095
1096 /** @} */
1097
1098 static int build_xfrm_sa_message(struct xfrmnl_sa *tmpl, int cmd, int flags, struct nl_msg **result)
1099 {
1100 struct nl_msg* msg;
1101 struct xfrm_usersa_info sa_info;
1102 uint32_t len;
1103 struct nl_addr* addr;
1104
1105 if (!(tmpl->ce_mask & XFRM_SA_ATTR_DADDR) ||
1106 !(tmpl->ce_mask & XFRM_SA_ATTR_SPI) ||
1107 !(tmpl->ce_mask & XFRM_SA_ATTR_PROTO))
1108 return -NLE_MISSING_ATTR;
1109
1110 memset ((void*)&sa_info, 0, sizeof (sa_info));
1111 if (tmpl->ce_mask & XFRM_SA_ATTR_SEL)
1112 {
1113 addr = xfrmnl_sel_get_daddr (tmpl->sel);
1114 memcpy ((void*)&sa_info.sel.daddr, (void*)nl_addr_get_binary_addr (addr), sizeof (uint8_t) * nl_addr_get_len (addr));
1115 addr = xfrmnl_sel_get_saddr (tmpl->sel);
1116 memcpy ((void*)&sa_info.sel.saddr, (void*)nl_addr_get_binary_addr (addr), sizeof (uint8_t) * nl_addr_get_len (addr));
1117 sa_info.sel.dport = htons (xfrmnl_sel_get_dport (tmpl->sel));
1118 sa_info.sel.dport_mask = htons (xfrmnl_sel_get_dportmask (tmpl->sel));
1119 sa_info.sel.sport = htons (xfrmnl_sel_get_sport (tmpl->sel));
1120 sa_info.sel.sport_mask = htons (xfrmnl_sel_get_sportmask (tmpl->sel));
1121 sa_info.sel.family = xfrmnl_sel_get_family (tmpl->sel);
1122 sa_info.sel.prefixlen_d = xfrmnl_sel_get_prefixlen_d (tmpl->sel);
1123 sa_info.sel.prefixlen_s = xfrmnl_sel_get_prefixlen_s (tmpl->sel);
1124 sa_info.sel.proto = xfrmnl_sel_get_proto (tmpl->sel);
1125 sa_info.sel.ifindex = xfrmnl_sel_get_ifindex (tmpl->sel);
1126 sa_info.sel.user = xfrmnl_sel_get_userid (tmpl->sel);
1127 }
1128
1129 memcpy (&sa_info.id.daddr, nl_addr_get_binary_addr (tmpl->id.daddr), sizeof (uint8_t) * nl_addr_get_len (tmpl->id.daddr));
1130 sa_info.id.spi = htonl(tmpl->id.spi);
1131 sa_info.id.proto = tmpl->id.proto;
1132
1133 if (tmpl->ce_mask & XFRM_SA_ATTR_SADDR)
1134 memcpy (&sa_info.saddr, nl_addr_get_binary_addr (tmpl->saddr), sizeof (uint8_t) * nl_addr_get_len (tmpl->saddr));
1135
1136 if (tmpl->ce_mask & XFRM_SA_ATTR_LTIME_CFG)
1137 {
1138 sa_info.lft.soft_byte_limit = xfrmnl_ltime_cfg_get_soft_bytelimit (tmpl->lft);
1139 sa_info.lft.hard_byte_limit = xfrmnl_ltime_cfg_get_hard_bytelimit (tmpl->lft);
1140 sa_info.lft.soft_packet_limit = xfrmnl_ltime_cfg_get_soft_packetlimit (tmpl->lft);
1141 sa_info.lft.hard_packet_limit = xfrmnl_ltime_cfg_get_hard_packetlimit (tmpl->lft);
1142 sa_info.lft.soft_add_expires_seconds = xfrmnl_ltime_cfg_get_soft_addexpires (tmpl->lft);
1143 sa_info.lft.hard_add_expires_seconds = xfrmnl_ltime_cfg_get_hard_addexpires (tmpl->lft);
1144 sa_info.lft.soft_use_expires_seconds = xfrmnl_ltime_cfg_get_soft_useexpires (tmpl->lft);
1145 sa_info.lft.hard_use_expires_seconds = xfrmnl_ltime_cfg_get_hard_useexpires (tmpl->lft);
1146 }
1147
1148 //Skip current lifetime: cur lifetime can be updated only via AE
1149 //Skip stats: stats cant be updated
1150 //Skip seq: seq cant be updated
1151
1152 if (tmpl->ce_mask & XFRM_SA_ATTR_REQID)
1153 sa_info.reqid = tmpl->reqid;
1154
1155 if (tmpl->ce_mask & XFRM_SA_ATTR_FAMILY)
1156 sa_info.family = tmpl->family;
1157
1158 if (tmpl->ce_mask & XFRM_SA_ATTR_MODE)
1159 sa_info.mode = tmpl->mode;
1160
1161 if (tmpl->ce_mask & XFRM_SA_ATTR_REPLAY_WIN)
1162 sa_info.replay_window = tmpl->replay_window;
1163
1164 if (tmpl->ce_mask & XFRM_SA_ATTR_FLAGS)
1165 sa_info.flags = tmpl->flags;
1166
1167 msg = nlmsg_alloc_simple(cmd, flags);
1168 if (!msg)
1169 return -NLE_NOMEM;
1170
1171 if (nlmsg_append(msg, &sa_info, sizeof(sa_info), NLMSG_ALIGNTO) < 0)
1172 goto nla_put_failure;
1173
1174 if (tmpl->ce_mask & XFRM_SA_ATTR_ALG_AEAD) {
1175 len = sizeof (struct xfrm_algo_aead) + ((tmpl->aead->alg_key_len + 7) / 8);
1176 NLA_PUT (msg, XFRMA_ALG_AEAD, len, tmpl->aead);
1177 }
1178
1179 if (tmpl->ce_mask & XFRM_SA_ATTR_ALG_AUTH) {
1180 /* kernel prefers XFRMA_ALG_AUTH_TRUNC over XFRMA_ALG_AUTH, so only
1181 * one of the attributes needs to be present */
1182 if (tmpl->auth->alg_trunc_len) {
1183 len = sizeof (struct xfrm_algo_auth) + ((tmpl->auth->alg_key_len + 7) / 8);
1184 NLA_PUT (msg, XFRMA_ALG_AUTH_TRUNC, len, tmpl->auth);
1185 } else {
1186 struct xfrm_algo *auth;
1187
1188 len = sizeof (struct xfrm_algo) + ((tmpl->auth->alg_key_len + 7) / 8);
1189 auth = malloc(len);
1190 if (!auth) {
1191 nlmsg_free(msg);
1192 return -NLE_NOMEM;
1193 }
1194
1195 strncpy(auth->alg_name, tmpl->auth->alg_name, sizeof(auth->alg_name));
1196 auth->alg_name[sizeof(auth->alg_name) - 1] = '\0';
1197 auth->alg_key_len = tmpl->auth->alg_key_len;
1198 memcpy(auth->alg_key, tmpl->auth->alg_key, (tmpl->auth->alg_key_len + 7) / 8);
1199 if (nla_put(msg, XFRMA_ALG_AUTH, len, auth) < 0) {
1200 free(auth);
1201 goto nla_put_failure;
1202 }
1203 free(auth);
1204 }
1205 }
1206
1207 if (tmpl->ce_mask & XFRM_SA_ATTR_ALG_CRYPT) {
1208 len = sizeof (struct xfrm_algo) + ((tmpl->crypt->alg_key_len + 7) / 8);
1209 NLA_PUT (msg, XFRMA_ALG_CRYPT, len, tmpl->crypt);
1210 }
1211
1212 if (tmpl->ce_mask & XFRM_SA_ATTR_ALG_COMP) {
1213 len = sizeof (struct xfrm_algo) + ((tmpl->comp->alg_key_len + 7) / 8);
1214 NLA_PUT (msg, XFRMA_ALG_COMP, len, tmpl->comp);
1215 }
1216
1217 if (tmpl->ce_mask & XFRM_SA_ATTR_ENCAP) {
1218 struct xfrm_encap_tmpl* encap_tmpl;
1219 struct nlattr* encap_attr;
1220
1221 len = sizeof (struct xfrm_encap_tmpl);
1222 encap_attr = nla_reserve(msg, XFRMA_ENCAP, len);
1223 if (!encap_attr)
1224 goto nla_put_failure;
1225 encap_tmpl = nla_data (encap_attr);
1226 encap_tmpl->encap_type = tmpl->encap->encap_type;
1227 encap_tmpl->encap_sport = htons (tmpl->encap->encap_sport);
1228 encap_tmpl->encap_dport = htons (tmpl->encap->encap_dport);
1229 memcpy (&encap_tmpl->encap_oa, nl_addr_get_binary_addr (tmpl->encap->encap_oa), sizeof (uint8_t) * nl_addr_get_len (tmpl->encap->encap_oa));
1230 }
1231
1232 if (tmpl->ce_mask & XFRM_SA_ATTR_TFCPAD) {
1233 NLA_PUT_U32 (msg, XFRMA_TFCPAD, tmpl->tfcpad);
1234 }
1235
1236 if (tmpl->ce_mask & XFRM_SA_ATTR_COADDR) {
1237 NLA_PUT (msg, XFRMA_COADDR, sizeof (xfrm_address_t), tmpl->coaddr);
1238 }
1239
1240 if (tmpl->ce_mask & XFRM_SA_ATTR_MARK) {
1241 NLA_PUT (msg, XFRMA_MARK, sizeof (struct xfrm_mark), &tmpl->mark);
1242 }
1243
1244 if (tmpl->ce_mask & XFRM_SA_ATTR_SECCTX) {
1245 len = sizeof (struct xfrm_sec_ctx) + tmpl->sec_ctx->ctx_len;
1246 NLA_PUT (msg, XFRMA_SEC_CTX, len, tmpl->sec_ctx);
1247 }
1248
1249 if (tmpl->ce_mask & XFRM_SA_ATTR_REPLAY_MAXAGE) {
1250 NLA_PUT_U32 (msg, XFRMA_ETIMER_THRESH, tmpl->replay_maxage);
1251 }
1252
1253 if (tmpl->ce_mask & XFRM_SA_ATTR_REPLAY_MAXDIFF) {
1254 NLA_PUT_U32 (msg, XFRMA_REPLAY_THRESH, tmpl->replay_maxdiff);
1255 }
1256
1257 if (tmpl->ce_mask & XFRM_SA_ATTR_REPLAY_STATE) {
1258 if (tmpl->replay_state_esn) {
1259 len = sizeof (struct xfrm_replay_state_esn) + (sizeof (uint32_t) * tmpl->replay_state_esn->bmp_len);
1260 NLA_PUT (msg, XFRMA_REPLAY_ESN_VAL, len, tmpl->replay_state_esn);
1261 }
1262 else {
1263 NLA_PUT (msg, XFRMA_REPLAY_VAL, sizeof (struct xfrm_replay_state), &tmpl->replay_state);
1264 }
1265 }
1266
1267 *result = msg;
1268 return 0;
1269
1270 nla_put_failure:
1271 nlmsg_free(msg);
1272 return -NLE_MSGSIZE;
1273 }
1274
1275 /**
1276 * @name XFRM SA Add
1277 * @{
1278 */
1279
1280 int xfrmnl_sa_build_add_request(struct xfrmnl_sa* tmpl, int flags, struct nl_msg **result)
1281 {
1282 return build_xfrm_sa_message (tmpl, XFRM_MSG_NEWSA, flags, result);
1283 }
1284
1285 int xfrmnl_sa_add(struct nl_sock* sk, struct xfrmnl_sa* tmpl, int flags)
1286 {
1287 int err;
1288 struct nl_msg *msg;
1289
1290 if ((err = xfrmnl_sa_build_add_request(tmpl, flags, &msg)) < 0)
1291 return err;
1292
1293 err = nl_send_auto_complete(sk, msg);
1294 nlmsg_free(msg);
1295 if (err < 0)
1296 return err;
1297
1298 return nl_wait_for_ack(sk);
1299 }
1300
1301 /**
1302 * @name XFRM SA Update
1303 * @{
1304 */
1305
1306 int xfrmnl_sa_build_update_request(struct xfrmnl_sa* tmpl, int flags, struct nl_msg **result)
1307 {
1308 return build_xfrm_sa_message (tmpl, XFRM_MSG_UPDSA, flags, result);
1309 }
1310
1311 int xfrmnl_sa_update(struct nl_sock* sk, struct xfrmnl_sa* tmpl, int flags)
1312 {
1313 int err;
1314 struct nl_msg *msg;
1315
1316 if ((err = xfrmnl_sa_build_update_request(tmpl, flags, &msg)) < 0)
1317 return err;
1318
1319 err = nl_send_auto_complete(sk, msg);
1320 nlmsg_free(msg);
1321 if (err < 0)
1322 return err;
1323
1324 return nl_wait_for_ack(sk);
1325 }
1326
1327 /** @} */
1328
1329 static int build_xfrm_sa_delete_message(struct xfrmnl_sa *tmpl, int cmd, int flags, struct nl_msg **result)
1330 {
1331 struct nl_msg* msg;
1332 struct xfrm_usersa_id sa_id;
1333
1334 if (!(tmpl->ce_mask & XFRM_SA_ATTR_DADDR) ||
1335 !(tmpl->ce_mask & XFRM_SA_ATTR_SPI) ||
1336 !(tmpl->ce_mask & XFRM_SA_ATTR_PROTO))
1337 return -NLE_MISSING_ATTR;
1338
1339 memcpy (&sa_id.daddr, nl_addr_get_binary_addr (tmpl->id.daddr),
1340 sizeof (uint8_t) * nl_addr_get_len (tmpl->id.daddr));
1341 sa_id.family = nl_addr_get_family (tmpl->id.daddr);
1342 sa_id.spi = htonl(tmpl->id.spi);
1343 sa_id.proto = tmpl->id.proto;
1344
1345 msg = nlmsg_alloc_simple(cmd, flags);
1346 if (!msg)
1347 return -NLE_NOMEM;
1348
1349 if (nlmsg_append(msg, &sa_id, sizeof(sa_id), NLMSG_ALIGNTO) < 0)
1350 goto nla_put_failure;
1351
1352 if (tmpl->ce_mask & XFRM_SA_ATTR_MARK) {
1353 NLA_PUT (msg, XFRMA_MARK, sizeof (struct xfrm_mark), &tmpl->mark);
1354 }
1355
1356 *result = msg;
1357 return 0;
1358
1359 nla_put_failure:
1360 nlmsg_free(msg);
1361 return -NLE_MSGSIZE;
1362 }
1363
1364 /**
1365 * @name XFRM SA Delete
1366 * @{
1367 */
1368
1369 int xfrmnl_sa_build_delete_request(struct xfrmnl_sa* tmpl, int flags, struct nl_msg **result)
1370 {
1371 return build_xfrm_sa_delete_message (tmpl, XFRM_MSG_DELSA, flags, result);
1372 }
1373
1374 int xfrmnl_sa_delete(struct nl_sock* sk, struct xfrmnl_sa* tmpl, int flags)
1375 {
1376 int err;
1377 struct nl_msg *msg;
1378
1379 if ((err = xfrmnl_sa_build_delete_request(tmpl, flags, &msg)) < 0)
1380 return err;
1381
1382 err = nl_send_auto_complete(sk, msg);
1383 nlmsg_free(msg);
1384 if (err < 0)
1385 return err;
1386
1387 return nl_wait_for_ack(sk);
1388 }
1389
1390 /** @} */
1391
1392
1393 /**
1394 * @name Attributes
1395 * @{
1396 */
1397
1398 struct xfrmnl_sel* xfrmnl_sa_get_sel (struct xfrmnl_sa* sa)
1399 {
1400 if (sa->ce_mask & XFRM_SA_ATTR_SEL)
1401 return sa->sel;
1402 else
1403 return NULL;
1404 }
1405
1406 int xfrmnl_sa_set_sel (struct xfrmnl_sa* sa, struct xfrmnl_sel* sel)
1407 {
1408 /* Release any previously held selector object from the SA */
1409 if (sa->sel)
1410 xfrmnl_sel_put (sa->sel);
1411
1412 /* Increment ref count on new selector and save it in the SA */
1413 xfrmnl_sel_get (sel);
1414 sa->sel = sel;
1415 sa->ce_mask |= XFRM_SA_ATTR_SEL;
1416
1417 return 0;
1418 }
1419
1420 static inline int __assign_addr(struct xfrmnl_sa* sa, struct nl_addr **pos,
1421 struct nl_addr *new, int flag, int nocheck)
1422 {
1423 if (!nocheck)
1424 {
1425 if (sa->ce_mask & XFRM_SA_ATTR_FAMILY)
1426 {
1427 if (nl_addr_get_family (new) != sa->family)
1428 return -NLE_AF_MISMATCH;
1429 }
1430 }
1431
1432 if (*pos)
1433 nl_addr_put(*pos);
1434
1435 nl_addr_get(new);
1436 *pos = new;
1437
1438 sa->ce_mask |= flag;
1439
1440 return 0;
1441 }
1442
1443
1444 struct nl_addr* xfrmnl_sa_get_daddr (struct xfrmnl_sa* sa)
1445 {
1446 if (sa->ce_mask & XFRM_SA_ATTR_DADDR)
1447 return sa->id.daddr;
1448 else
1449 return NULL;
1450 }
1451
1452 int xfrmnl_sa_set_daddr (struct xfrmnl_sa* sa, struct nl_addr* addr)
1453 {
1454 return __assign_addr(sa, &sa->id.daddr, addr, XFRM_SA_ATTR_DADDR, 0);
1455 }
1456
1457 int xfrmnl_sa_get_spi (struct xfrmnl_sa* sa)
1458 {
1459 if (sa->ce_mask & XFRM_SA_ATTR_SPI)
1460 return sa->id.spi;
1461 else
1462 return -1;
1463 }
1464
1465 int xfrmnl_sa_set_spi (struct xfrmnl_sa* sa, unsigned int spi)
1466 {
1467 sa->id.spi = spi;
1468 sa->ce_mask |= XFRM_SA_ATTR_SPI;
1469
1470 return 0;
1471 }
1472
1473 int xfrmnl_sa_get_proto (struct xfrmnl_sa* sa)
1474 {
1475 if (sa->ce_mask & XFRM_SA_ATTR_PROTO)
1476 return sa->id.proto;
1477 else
1478 return -1;
1479 }
1480
1481 int xfrmnl_sa_set_proto (struct xfrmnl_sa* sa, unsigned int protocol)
1482 {
1483 sa->id.proto = protocol;
1484 sa->ce_mask |= XFRM_SA_ATTR_PROTO;
1485
1486 return 0;
1487 }
1488
1489 struct nl_addr* xfrmnl_sa_get_saddr (struct xfrmnl_sa* sa)
1490 {
1491 if (sa->ce_mask & XFRM_SA_ATTR_SADDR)
1492 return sa->saddr;
1493 else
1494 return NULL;
1495 }
1496
1497 int xfrmnl_sa_set_saddr (struct xfrmnl_sa* sa, struct nl_addr* addr)
1498 {
1499 return __assign_addr(sa, &sa->saddr, addr, XFRM_SA_ATTR_SADDR, 1);
1500 }
1501
1502 struct xfrmnl_ltime_cfg* xfrmnl_sa_get_lifetime_cfg (struct xfrmnl_sa* sa)
1503 {
1504 if (sa->ce_mask & XFRM_SA_ATTR_LTIME_CFG)
1505 return sa->lft;
1506 else
1507 return NULL;
1508 }
1509
1510 int xfrmnl_sa_set_lifetime_cfg (struct xfrmnl_sa* sa, struct xfrmnl_ltime_cfg* ltime)
1511 {
1512 /* Release any previously held lifetime cfg object from the SA */
1513 if (sa->lft)
1514 xfrmnl_ltime_cfg_put (sa->lft);
1515
1516 /* Increment ref count on new lifetime object and save it in the SA */
1517 xfrmnl_ltime_cfg_get (ltime);
1518 sa->lft = ltime;
1519 sa->ce_mask |= XFRM_SA_ATTR_LTIME_CFG;
1520
1521 return 0;
1522 }
1523
1524 int xfrmnl_sa_get_curlifetime (struct xfrmnl_sa* sa, unsigned long long int* curr_bytes,
1525 unsigned long long int* curr_packets, unsigned long long int* curr_add_time, unsigned long long int* curr_use_time)
1526 {
1527 if (sa == NULL || curr_bytes == NULL || curr_packets == NULL || curr_add_time == NULL || curr_use_time == NULL)
1528 return -1;
1529
1530 if (sa->ce_mask & XFRM_SA_ATTR_LTIME_CUR)
1531 {
1532 *curr_bytes = sa->curlft.bytes;
1533 *curr_packets = sa->curlft.packets;
1534 *curr_add_time = sa->curlft.add_time;
1535 *curr_use_time = sa->curlft.use_time;
1536 }
1537 else
1538 return -1;
1539
1540 return 0;
1541 }
1542
1543 int xfrmnl_sa_get_stats (struct xfrmnl_sa* sa, unsigned long long int* replay_window,
1544 unsigned long long int* replay, unsigned long long int* integrity_failed)
1545 {
1546 if (sa == NULL || replay_window == NULL || replay == NULL || integrity_failed == NULL)
1547 return -1;
1548
1549 if (sa->ce_mask & XFRM_SA_ATTR_STATS)
1550 {
1551 *replay_window = sa->stats.replay_window;
1552 *replay = sa->stats.replay;
1553 *integrity_failed = sa->stats.integrity_failed;
1554 }
1555 else
1556 return -1;
1557
1558 return 0;
1559 }
1560
1561 int xfrmnl_sa_get_seq (struct xfrmnl_sa* sa)
1562 {
1563 if (sa->ce_mask & XFRM_SA_ATTR_SEQ)
1564 return sa->seq;
1565 else
1566 return -1;
1567 }
1568
1569 int xfrmnl_sa_get_reqid (struct xfrmnl_sa* sa)
1570 {
1571 if (sa->ce_mask & XFRM_SA_ATTR_REQID)
1572 return sa->reqid;
1573 else
1574 return -1;
1575 }
1576
1577 int xfrmnl_sa_set_reqid (struct xfrmnl_sa* sa, unsigned int reqid)
1578 {
1579 sa->reqid = reqid;
1580 sa->ce_mask |= XFRM_SA_ATTR_REQID;
1581
1582 return 0;
1583 }
1584
1585 int xfrmnl_sa_get_family (struct xfrmnl_sa* sa)
1586 {
1587 if (sa->ce_mask & XFRM_SA_ATTR_FAMILY)
1588 return sa->family;
1589 else
1590 return -1;
1591 }
1592
1593 int xfrmnl_sa_set_family (struct xfrmnl_sa* sa, unsigned int family)
1594 {
1595 sa->family = family;
1596 sa->ce_mask |= XFRM_SA_ATTR_FAMILY;
1597
1598 return 0;
1599 }
1600
1601 int xfrmnl_sa_get_mode (struct xfrmnl_sa* sa)
1602 {
1603 if (sa->ce_mask & XFRM_SA_ATTR_MODE)
1604 return sa->mode;
1605 else
1606 return -1;
1607 }
1608
1609 int xfrmnl_sa_set_mode (struct xfrmnl_sa* sa, unsigned int mode)
1610 {
1611 sa->mode = mode;
1612 sa->ce_mask |= XFRM_SA_ATTR_MODE;
1613
1614 return 0;
1615 }
1616
1617 int xfrmnl_sa_get_replay_window (struct xfrmnl_sa* sa)
1618 {
1619 if (sa->ce_mask & XFRM_SA_ATTR_REPLAY_WIN)
1620 return sa->replay_window;
1621 else
1622 return -1;
1623 }
1624
1625 int xfrmnl_sa_set_replay_window (struct xfrmnl_sa* sa, unsigned int replay_window)
1626 {
1627 sa->replay_window = replay_window;
1628 sa->ce_mask |= XFRM_SA_ATTR_REPLAY_WIN;
1629
1630 return 0;
1631 }
1632
1633 int xfrmnl_sa_get_flags (struct xfrmnl_sa* sa)
1634 {
1635 if (sa->ce_mask & XFRM_SA_ATTR_FLAGS)
1636 return sa->flags;
1637 else
1638 return -1;
1639 }
1640
1641 int xfrmnl_sa_set_flags (struct xfrmnl_sa* sa, unsigned int flags)
1642 {
1643 sa->flags = flags;
1644 sa->ce_mask |= XFRM_SA_ATTR_FLAGS;
1645
1646 return 0;
1647 }
1648
1649 /**
1650 * Get the aead-params
1651 * @arg sa the xfrmnl_sa object
1652 * @arg alg_name an optional output buffer for the algorithm name. Must be at least 64 bytes.
1653 * @arg key_len an optional output value for the key length in bits.
1654 * @arg icv_len an optional output value for the alt-icv-len.
1655 * @arg key an optional buffer large enough for the key. It must contain at least
1656 * ((@key_len + 7) / 8) bytes.
1657 *
1658 * Warning: you must ensure that @key is large enough. If you don't know the key_len before-hand,
1659 * call xfrmnl_sa_get_aead_params() without @key argument to query only the required buffer size.
1660 * This modified API is available in all versions of libnl3 that support the capability
1661 * @def NL_CAPABILITY_XFRM_SA_KEY_SIZE (@see nl_has_capability for further information).
1662 *
1663 * @return 0 on success or a negative error code.
1664 */
1665 int xfrmnl_sa_get_aead_params (struct xfrmnl_sa* sa, char* alg_name, unsigned int* key_len, unsigned int* icv_len, char* key)
1666 {
1667 if (sa->ce_mask & XFRM_SA_ATTR_ALG_AEAD)
1668 {
1669 if (alg_name)
1670 strcpy (alg_name, sa->aead->alg_name);
1671 if (key_len)
1672 *key_len = sa->aead->alg_key_len;
1673 if (icv_len)
1674 *icv_len = sa->aead->alg_icv_len;
1675 if (key)
1676 memcpy (key, sa->aead->alg_key, ((sa->aead->alg_key_len + 7)/8));
1677 }
1678 else
1679 return -1;
1680
1681 return 0;
1682 }
1683
1684 int xfrmnl_sa_set_aead_params (struct xfrmnl_sa* sa, const char* alg_name, unsigned int key_len, unsigned int icv_len, const char* key)
1685 {
1686 _nl_auto_free struct xfrmnl_algo_aead *b = NULL;
1687 size_t keysize = sizeof (uint8_t) * ((key_len + 7)/8);
1688 uint32_t newlen = sizeof (struct xfrmnl_algo_aead) + keysize;
1689
1690 /* Free up the old key and allocate memory to hold new key */
1691 if (strlen (alg_name) >= sizeof (sa->aead->alg_name))
1692 return -1;
1693 if (!(b = calloc (1, newlen)))
1694 return -1;
1695
1696 strcpy (b->alg_name, alg_name);
1697 b->alg_key_len = key_len;
1698 b->alg_icv_len = icv_len;
1699 memcpy (b->alg_key, key, keysize);
1700
1701 free (sa->aead);
1702 sa->aead = _nl_steal_pointer (&b);
1703 sa->ce_mask |= XFRM_SA_ATTR_ALG_AEAD;
1704 return 0;
1705 }
1706
1707 /**
1708 * Get the auth-params
1709 * @arg sa the xfrmnl_sa object
1710 * @arg alg_name an optional output buffer for the algorithm name. Must be at least 64 bytes.
1711 * @arg key_len an optional output value for the key length in bits.
1712 * @arg trunc_len an optional output value for the alg-trunc-len.
1713 * @arg key an optional buffer large enough for the key. It must contain at least
1714 * ((@key_len + 7) / 8) bytes.
1715 *
1716 * Warning: you must ensure that @key is large enough. If you don't know the key_len before-hand,
1717 * call xfrmnl_sa_get_auth_params() without @key argument to query only the required buffer size.
1718 * This modified API is available in all versions of libnl3 that support the capability
1719 * @def NL_CAPABILITY_XFRM_SA_KEY_SIZE (@see nl_has_capability for further information).
1720 *
1721 * @return 0 on success or a negative error code.
1722 */
1723 int xfrmnl_sa_get_auth_params (struct xfrmnl_sa* sa, char* alg_name, unsigned int* key_len, unsigned int* trunc_len, char* key)
1724 {
1725 if (sa->ce_mask & XFRM_SA_ATTR_ALG_AUTH)
1726 {
1727 if (alg_name)
1728 strcpy (alg_name, sa->auth->alg_name);
1729 if (key_len)
1730 *key_len = sa->auth->alg_key_len;
1731 if (trunc_len)
1732 *trunc_len = sa->auth->alg_trunc_len;
1733 if (key)
1734 memcpy (key, sa->auth->alg_key, (sa->auth->alg_key_len + 7)/8);
1735 }
1736 else
1737 return -1;
1738
1739 return 0;
1740 }
1741
1742 int xfrmnl_sa_set_auth_params (struct xfrmnl_sa* sa, const char* alg_name, unsigned int key_len, unsigned int trunc_len, const char* key)
1743 {
1744 _nl_auto_free struct xfrmnl_algo_auth *b = NULL;
1745 size_t keysize = sizeof (uint8_t) * ((key_len + 7)/8);
1746 uint32_t newlen = sizeof (struct xfrmnl_algo_auth) + keysize;
1747
1748 if (strlen (alg_name) >= sizeof (sa->auth->alg_name))
1749 return -1;
1750 if (!(b = calloc (1, newlen)))
1751 return -1;
1752
1753 strcpy (b->alg_name, alg_name);
1754 b->alg_key_len = key_len;
1755 b->alg_trunc_len = trunc_len;
1756 memcpy (b->alg_key, key, keysize);
1757
1758 free (sa->auth);
1759 sa->auth = _nl_steal_pointer (&b);
1760 sa->ce_mask |= XFRM_SA_ATTR_ALG_AUTH;
1761 return 0;
1762 }
1763
1764 /**
1765 * Get the crypto-params
1766 * @arg sa the xfrmnl_sa object
1767 * @arg alg_name an optional output buffer for the algorithm name. Must be at least 64 bytes.
1768 * @arg key_len an optional output value for the key length in bits.
1769 * @arg key an optional buffer large enough for the key. It must contain at least
1770 * ((@key_len + 7) / 8) bytes.
1771 *
1772 * Warning: you must ensure that @key is large enough. If you don't know the key_len before-hand,
1773 * call xfrmnl_sa_get_crypto_params() without @key argument to query only the required buffer size.
1774 * This modified API is available in all versions of libnl3 that support the capability
1775 * @def NL_CAPABILITY_XFRM_SA_KEY_SIZE (@see nl_has_capability for further information).
1776 *
1777 * @return 0 on success or a negative error code.
1778 */
1779 int xfrmnl_sa_get_crypto_params (struct xfrmnl_sa* sa, char* alg_name, unsigned int* key_len, char* key)
1780 {
1781 if (sa->ce_mask & XFRM_SA_ATTR_ALG_CRYPT)
1782 {
1783 if (alg_name)
1784 strcpy (alg_name, sa->crypt->alg_name);
1785 if (key_len)
1786 *key_len = sa->crypt->alg_key_len;
1787 if (key)
1788 memcpy (key, sa->crypt->alg_key, ((sa->crypt->alg_key_len + 7)/8));
1789 }
1790 else
1791 return -1;
1792
1793 return 0;
1794 }
1795
1796 int xfrmnl_sa_set_crypto_params (struct xfrmnl_sa* sa, const char* alg_name, unsigned int key_len, const char* key)
1797 {
1798 _nl_auto_free struct xfrmnl_algo *b = NULL;
1799 size_t keysize = sizeof (uint8_t) * ((key_len + 7)/8);
1800 uint32_t newlen = sizeof (struct xfrmnl_algo) + keysize;
1801
1802 if (strlen (alg_name) >= sizeof (sa->crypt->alg_name))
1803 return -1;
1804 if (!(b = calloc (1, newlen)))
1805 return -1;
1806
1807 strcpy (b->alg_name, alg_name);
1808 b->alg_key_len = key_len;
1809 memcpy (b->alg_key, key, keysize);
1810
1811 free(sa->crypt);
1812 sa->crypt = _nl_steal_pointer(&b);
1813 sa->ce_mask |= XFRM_SA_ATTR_ALG_CRYPT;
1814 return 0;
1815 }
1816
1817 /**
1818 * Get the comp-params
1819 * @arg sa the xfrmnl_sa object
1820 * @arg alg_name an optional output buffer for the algorithm name. Must be at least 64 bytes.
1821 * @arg key_len an optional output value for the key length in bits.
1822 * @arg key an optional buffer large enough for the key. It must contain at least
1823 * ((@key_len + 7) / 8) bytes.
1824 *
1825 * Warning: you must ensure that @key is large enough. If you don't know the key_len before-hand,
1826 * call xfrmnl_sa_get_comp_params() without @key argument to query only the required buffer size.
1827 * This modified API is available in all versions of libnl3 that support the capability
1828 * @def NL_CAPABILITY_XFRM_SA_KEY_SIZE (@see nl_has_capability for further information).
1829 *
1830 * @return 0 on success or a negative error code.
1831 */
1832 int xfrmnl_sa_get_comp_params (struct xfrmnl_sa* sa, char* alg_name, unsigned int* key_len, char* key)
1833 {
1834 if (sa->ce_mask & XFRM_SA_ATTR_ALG_COMP)
1835 {
1836 if (alg_name)
1837 strcpy (alg_name, sa->comp->alg_name);
1838 if (key_len)
1839 *key_len = sa->comp->alg_key_len;
1840 if (key)
1841 memcpy (key, sa->comp->alg_key, ((sa->comp->alg_key_len + 7)/8));
1842 }
1843 else
1844 return -1;
1845
1846 return 0;
1847 }
1848
1849 int xfrmnl_sa_set_comp_params (struct xfrmnl_sa* sa, const char* alg_name, unsigned int key_len, const char* key)
1850 {
1851 _nl_auto_free struct xfrmnl_algo *b = NULL;
1852 size_t keysize = sizeof (uint8_t) * ((key_len + 7)/8);
1853 uint32_t newlen = sizeof (struct xfrmnl_algo) + keysize;
1854
1855 if (strlen (alg_name) >= sizeof (sa->comp->alg_name))
1856 return -1;
1857 if (!(b = calloc (1, newlen)))
1858 return -1;
1859
1860 strcpy (b->alg_name, alg_name);
1861 b->alg_key_len = key_len;
1862 memcpy (b->alg_key, key, keysize);
1863
1864 free(sa->comp);
1865 sa->comp = _nl_steal_pointer(&b);
1866 sa->ce_mask |= XFRM_SA_ATTR_ALG_COMP;
1867 return 0;
1868 }
1869
1870 int xfrmnl_sa_get_encap_tmpl (struct xfrmnl_sa* sa, unsigned int* encap_type, unsigned int* encap_sport, unsigned int* encap_dport, struct nl_addr** encap_oa)
1871 {
1872 if (sa->ce_mask & XFRM_SA_ATTR_ENCAP)
1873 {
1874 *encap_type = sa->encap->encap_type;
1875 *encap_sport = sa->encap->encap_sport;
1876 *encap_dport = sa->encap->encap_dport;
1877 *encap_oa = nl_addr_clone (sa->encap->encap_oa);
1878 }
1879 else
1880 return -1;
1881
1882 return 0;
1883 }
1884
1885 int xfrmnl_sa_set_encap_tmpl (struct xfrmnl_sa* sa, unsigned int encap_type, unsigned int encap_sport, unsigned int encap_dport, struct nl_addr* encap_oa)
1886 {
1887 if (sa->encap) {
1888 /* Free up the old encap OA */
1889 if (sa->encap->encap_oa)
1890 nl_addr_put(sa->encap->encap_oa);
1891 memset(sa->encap, 0, sizeof (*sa->encap));
1892 } else if ((sa->encap = calloc(1, sizeof(*sa->encap))) == NULL)
1893 return -1;
1894
1895 /* Save the new info */
1896 sa->encap->encap_type = encap_type;
1897 sa->encap->encap_sport = encap_sport;
1898 sa->encap->encap_dport = encap_dport;
1899 nl_addr_get (encap_oa);
1900 sa->encap->encap_oa = encap_oa;
1901
1902 sa->ce_mask |= XFRM_SA_ATTR_ENCAP;
1903
1904 return 0;
1905 }
1906
1907 int xfrmnl_sa_get_tfcpad (struct xfrmnl_sa* sa)
1908 {
1909 if (sa->ce_mask & XFRM_SA_ATTR_TFCPAD)
1910 return sa->tfcpad;
1911 else
1912 return -1;
1913 }
1914
1915 int xfrmnl_sa_set_tfcpad (struct xfrmnl_sa* sa, unsigned int tfcpad)
1916 {
1917 sa->tfcpad = tfcpad;
1918 sa->ce_mask |= XFRM_SA_ATTR_TFCPAD;
1919
1920 return 0;
1921 }
1922
1923 struct nl_addr* xfrmnl_sa_get_coaddr (struct xfrmnl_sa* sa)
1924 {
1925 if (sa->ce_mask & XFRM_SA_ATTR_COADDR)
1926 return sa->coaddr;
1927 else
1928 return NULL;
1929 }
1930
1931 int xfrmnl_sa_set_coaddr (struct xfrmnl_sa* sa, struct nl_addr* coaddr)
1932 {
1933 /* Free up the old coaddr */
1934 if (sa->coaddr)
1935 nl_addr_put (sa->coaddr);
1936
1937 /* Save the new info */
1938 nl_addr_get (coaddr);
1939 sa->coaddr = coaddr;
1940
1941 sa->ce_mask |= XFRM_SA_ATTR_COADDR;
1942
1943 return 0;
1944 }
1945
1946 int xfrmnl_sa_get_mark (struct xfrmnl_sa* sa, unsigned int* mark_mask, unsigned int* mark_value)
1947 {
1948 if (mark_mask == NULL || mark_value == NULL)
1949 return -1;
1950
1951 if (sa->ce_mask & XFRM_SA_ATTR_MARK)
1952 {
1953 *mark_mask = sa->mark.m;
1954 *mark_value = sa->mark.v;
1955
1956 return 0;
1957 }
1958 else
1959 return -1;
1960 }
1961
1962 int xfrmnl_sa_set_mark (struct xfrmnl_sa* sa, unsigned int value, unsigned int mask)
1963 {
1964 sa->mark.v = value;
1965 sa->mark.m = mask;
1966 sa->ce_mask |= XFRM_SA_ATTR_MARK;
1967
1968 return 0;
1969 }
1970
1971 /**
1972 * Get the security context.
1973 *
1974 * @arg sa The xfrmnl_sa object.
1975 * @arg doi An optional output value for the security context domain of interpretation.
1976 * @arg alg An optional output value for the security context algorithm.
1977 * @arg len An optional output value for the security context length, including the
1978 * terminating null byte ('\0').
1979 * @arg sid Unused parameter.
1980 * @arg ctx_str An optional buffer large enough for the security context string. It must
1981 * contain at least @len bytes.
1982 *
1983 * Warning: you must ensure that @ctx_str is large enough. If you don't know the length before-hand,
1984 * call xfrmnl_sa_get_sec_ctx() without @ctx_str argument to query only the required buffer size.
1985 * This modified API is available in all versions of libnl3 that support the capability
1986 * @def NL_CAPABILITY_XFRM_SEC_CTX_LEN (@see nl_has_capability for further information).
1987 *
1988 * @return 0 on success or a negative error code.
1989 */
1990 int xfrmnl_sa_get_sec_ctx (struct xfrmnl_sa* sa, unsigned int* doi, unsigned int* alg,
1991 unsigned int* len, unsigned int* sid, char* ctx_str)
1992 {
1993 if (sa->ce_mask & XFRM_SA_ATTR_SECCTX)
1994 {
1995 if (doi)
1996 *doi = sa->sec_ctx->ctx_doi;
1997 if (alg)
1998 *alg = sa->sec_ctx->ctx_alg;
1999 if (len)
2000 *len = sa->sec_ctx->ctx_len;
2001 if (ctx_str)
2002 memcpy (ctx_str, sa->sec_ctx->ctx, sa->sec_ctx->ctx_len);
2003 }
2004 else
2005 return -1;
2006
2007 return 0;
2008 }
2009
2010 /**
2011 * Set the security context.
2012 *
2013 * @arg sa The xfrmnl_sa object.
2014 * @arg doi Parameter for the security context domain of interpretation.
2015 * @arg alg Parameter for the security context algorithm.
2016 * @arg len Parameter for the length of the security context string containing
2017 * the terminating null byte ('\0').
2018 * @arg sid Unused parameter.
2019 * @arg ctx_str Buffer containing the security context string.
2020 *
2021 * @return 0 on success or a negative error code.
2022 */
2023 int xfrmnl_sa_set_sec_ctx (struct xfrmnl_sa* sa, unsigned int doi, unsigned int alg, unsigned int len,
2024 unsigned int sid, const char* ctx_str)
2025 {
2026 _nl_auto_free struct xfrmnl_user_sec_ctx *b = NULL;
2027
2028 if (!(b = calloc(1, sizeof (struct xfrmnl_user_sec_ctx) + 1 + len)))
2029 return -1;
2030
2031 b->len = sizeof(struct xfrmnl_user_sec_ctx) + len;
2032 b->exttype = XFRMA_SEC_CTX;
2033 b->ctx_alg = alg;
2034 b->ctx_doi = doi;
2035 b->ctx_len = len;
2036 memcpy (b->ctx, ctx_str, len);
2037 b->ctx[len] = '\0';
2038
2039 free(sa->sec_ctx);
2040 sa->sec_ctx = _nl_steal_pointer(&b);
2041 sa->ce_mask |= XFRM_SA_ATTR_SECCTX;
2042 return 0;
2043 }
2044
2045
2046 int xfrmnl_sa_get_replay_maxage (struct xfrmnl_sa* sa)
2047 {
2048 if (sa->ce_mask & XFRM_SA_ATTR_REPLAY_MAXAGE)
2049 return sa->replay_maxage;
2050 else
2051 return -1;
2052 }
2053
2054 int xfrmnl_sa_set_replay_maxage (struct xfrmnl_sa* sa, unsigned int replay_maxage)
2055 {
2056 sa->replay_maxage = replay_maxage;
2057 sa->ce_mask |= XFRM_SA_ATTR_REPLAY_MAXAGE;
2058
2059 return 0;
2060 }
2061
2062 int xfrmnl_sa_get_replay_maxdiff (struct xfrmnl_sa* sa)
2063 {
2064 if (sa->ce_mask & XFRM_SA_ATTR_REPLAY_MAXDIFF)
2065 return sa->replay_maxdiff;
2066 else
2067 return -1;
2068 }
2069
2070 int xfrmnl_sa_set_replay_maxdiff (struct xfrmnl_sa* sa, unsigned int replay_maxdiff)
2071 {
2072 sa->replay_maxdiff = replay_maxdiff;
2073 sa->ce_mask |= XFRM_SA_ATTR_REPLAY_MAXDIFF;
2074
2075 return 0;
2076 }
2077
2078 int xfrmnl_sa_get_replay_state (struct xfrmnl_sa* sa, unsigned int* oseq, unsigned int* seq, unsigned int* bmp)
2079 {
2080 if (sa->ce_mask & XFRM_SA_ATTR_REPLAY_STATE)
2081 {
2082 if (sa->replay_state_esn == NULL)
2083 {
2084 *oseq = sa->replay_state.oseq;
2085 *seq = sa->replay_state.seq;
2086 *bmp = sa->replay_state.bitmap;
2087
2088 return 0;
2089 }
2090 else
2091 {
2092 return -1;
2093 }
2094 }
2095 else
2096 return -1;
2097 }
2098
2099 int xfrmnl_sa_set_replay_state (struct xfrmnl_sa* sa, unsigned int oseq, unsigned int seq, unsigned int bitmap)
2100 {
2101 sa->replay_state.oseq = oseq;
2102 sa->replay_state.seq = seq;
2103 sa->replay_state.bitmap = bitmap;
2104 sa->ce_mask |= XFRM_SA_ATTR_REPLAY_STATE;
2105
2106 return 0;
2107 }
2108
2109 int xfrmnl_sa_get_replay_state_esn (struct xfrmnl_sa* sa, unsigned int* oseq, unsigned int* seq, unsigned int* oseq_hi,
2110 unsigned int* seq_hi, unsigned int* replay_window, unsigned int* bmp_len, unsigned int* bmp)
2111 {
2112 if (sa->ce_mask & XFRM_SA_ATTR_REPLAY_STATE)
2113 {
2114 if (sa->replay_state_esn)
2115 {
2116 *oseq = sa->replay_state_esn->oseq;
2117 *seq = sa->replay_state_esn->seq;
2118 *oseq_hi= sa->replay_state_esn->oseq_hi;
2119 *seq_hi = sa->replay_state_esn->seq_hi;
2120 *replay_window = sa->replay_state_esn->replay_window;
2121 *bmp_len = sa->replay_state_esn->bmp_len; // In number of 32 bit words
2122 memcpy (bmp, sa->replay_state_esn->bmp, sa->replay_state_esn->bmp_len * sizeof (uint32_t));
2123
2124 return 0;
2125 }
2126 else
2127 {
2128 return -1;
2129 }
2130 }
2131 else
2132 return -1;
2133 }
2134
2135 int xfrmnl_sa_set_replay_state_esn (struct xfrmnl_sa* sa, unsigned int oseq, unsigned int seq,
2136 unsigned int oseq_hi, unsigned int seq_hi, unsigned int replay_window,
2137 unsigned int bmp_len, unsigned int* bmp)
2138 {
2139 _nl_auto_free struct xfrmnl_replay_state_esn *b = NULL;
2140
2141 if (!(b = calloc (1, sizeof (struct xfrmnl_replay_state_esn) + (sizeof (uint32_t) * bmp_len))))
2142 return -1;
2143
2144 b->oseq = oseq;
2145 b->seq = seq;
2146 b->oseq_hi = oseq_hi;
2147 b->seq_hi = seq_hi;
2148 b->replay_window = replay_window;
2149 b->bmp_len = bmp_len; // In number of 32 bit words
2150 memcpy (b->bmp, bmp, bmp_len * sizeof (uint32_t));
2151
2152 free(sa->replay_state_esn);
2153 sa->replay_state_esn = _nl_steal_pointer(&b);
2154 sa->ce_mask |= XFRM_SA_ATTR_REPLAY_STATE;
2155 return 0;
2156 }
2157
2158
2159 int xfrmnl_sa_is_hardexpiry_reached (struct xfrmnl_sa* sa)
2160 {
2161 if (sa->ce_mask & XFRM_SA_ATTR_EXPIRE)
2162 return (sa->hard > 0 ? 1: 0);
2163 else
2164 return 0;
2165 }
2166
2167 int xfrmnl_sa_is_expiry_reached (struct xfrmnl_sa* sa)
2168 {
2169 if (sa->ce_mask & XFRM_SA_ATTR_EXPIRE)
2170 return 1;
2171 else
2172 return 0;
2173 }
2174
2175 /** @} */
2176
2177 static struct nl_object_ops xfrm_sa_obj_ops = {
2178 .oo_name = "xfrm/sa",
2179 .oo_size = sizeof(struct xfrmnl_sa),
2180 .oo_constructor = xfrm_sa_alloc_data,
2181 .oo_free_data = xfrm_sa_free_data,
2182 .oo_clone = xfrm_sa_clone,
2183 .oo_dump = {
2184 [NL_DUMP_LINE] = xfrm_sa_dump_line,
2185 [NL_DUMP_DETAILS] = xfrm_sa_dump_details,
2186 [NL_DUMP_STATS] = xfrm_sa_dump_stats,
2187 },
2188 .oo_compare = xfrm_sa_compare,
2189 .oo_attrs2str = xfrm_sa_attrs2str,
2190 .oo_id_attrs = (XFRM_SA_ATTR_DADDR | XFRM_SA_ATTR_SPI | XFRM_SA_ATTR_PROTO),
2191 };
2192
2193 static struct nl_af_group xfrm_sa_groups[] = {
2194 { AF_UNSPEC, XFRMNLGRP_SA },
2195 { AF_UNSPEC, XFRMNLGRP_EXPIRE },
2196 { END_OF_GROUP_LIST },
2197 };
2198
2199 static struct nl_cache_ops xfrmnl_sa_ops = {
2200 .co_name = "xfrm/sa",
2201 .co_hdrsize = sizeof(struct xfrm_usersa_info),
2202 .co_msgtypes = {
2203 { XFRM_MSG_NEWSA, NL_ACT_NEW, "new" },
2204 { XFRM_MSG_DELSA, NL_ACT_DEL, "del" },
2205 { XFRM_MSG_GETSA, NL_ACT_GET, "get" },
2206 { XFRM_MSG_EXPIRE, NL_ACT_UNSPEC, "expire"},
2207 { XFRM_MSG_UPDSA, NL_ACT_NEW, "update"},
2208 END_OF_MSGTYPES_LIST,
2209 },
2210 .co_protocol = NETLINK_XFRM,
2211 .co_groups = xfrm_sa_groups,
2212 .co_request_update = xfrm_sa_request_update,
2213 .co_msg_parser = xfrm_sa_msg_parser,
2214 .co_obj_ops = &xfrm_sa_obj_ops,
2215 .co_include_event = &xfrm_sa_update_cache
2216 };
2217
2218 /**
2219 * @name XFRM SA Cache Managament
2220 * @{
2221 */
2222
2223 static void __attribute__ ((constructor)) xfrm_sa_init(void)
2224 {
2225 nl_cache_mngt_register(&xfrmnl_sa_ops);
2226 }
2227
2228 static void __attribute__ ((destructor)) xfrm_sa_exit(void)
2229 {
2230 nl_cache_mngt_unregister(&xfrmnl_sa_ops);
2231 }
2232
2233 /** @} */
nl_send_auto_complete
int nl_send_auto_complete(struct nl_sock *sk, struct nl_msg *msg)
Definition: nl.c:1248
nl_addr_clone
struct nl_addr * nl_addr_clone(const struct nl_addr *addr)
Clone existing abstract address object.
Definition: addr.c:494
NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:22
nl_addr_set_prefixlen
void nl_addr_set_prefixlen(struct nl_addr *addr, int prefixlen)
Set the prefix length of an abstract address.
Definition: addr.c:966
nlmsg_free
void nlmsg_free(struct nl_msg *msg)
Release a reference from an netlink message.
Definition: msg.c:565
nlmsg_parse
int nlmsg_parse(struct nlmsghdr *nlh, int hdrlen, struct nlattr *tb[], int maxtype, const struct nla_policy *policy)
parse attributes of a netlink message
Definition: msg.c:215
nl_addr_cmp
int nl_addr_cmp(const struct nl_addr *a, const struct nl_addr *b)
Compare abstract addresses.
Definition: addr.c:586
nlmsg_data
void * nlmsg_data(const struct nlmsghdr *nlh)
Return pointer to message payload.
Definition: msg.c:107
nl_object_alloc
struct nl_object * nl_object_alloc(struct nl_object_ops *ops)
Allocate a new object of kind specified by the operations handle.
Definition: object.c:55
nl_cache_mngt_unregister
int nl_cache_mngt_unregister(struct nl_cache_ops *ops)
Unregister a set of cache operations.
Definition: cache_mngt.c:288
nla_policy
Attribute validation policy.
Definition: attr.h:69
nl_object_get
void nl_object_get(struct nl_object *obj)
Acquire a reference on a object.
Definition: object.c:205
nl_addr_build
struct nl_addr * nl_addr_build(int family, const void *buf, size_t size)
Allocate abstract address based on a binary address.
Definition: addr.c:218
nl_pickup
int nl_pickup(struct nl_sock *sk, int(*parser)(struct nl_cache_ops *, struct sockaddr_nl *, struct nlmsghdr *, struct nl_parser_param *), struct nl_object **result)
Pickup netlink answer, parse is and return object.
Definition: nl.c:1179
xfrmnl_ltime_cfg_clone
struct xfrmnl_ltime_cfg * xfrmnl_ltime_cfg_clone(struct xfrmnl_ltime_cfg *ltime)
Clone existing lifetime config object.
Definition: lifetime.c:95
nla_reserve
struct nlattr * nla_reserve(struct nl_msg *msg, int attrtype, int attrlen)
Reserve space for a attribute.
Definition: attr.c:457
nl_addr_get
struct nl_addr * nl_addr_get(struct nl_addr *addr)
Increase the reference counter of an abstract address.
Definition: addr.c:524
NL_DUMP_DETAILS
Dump all attributes but no statistics.
Definition: types.h:23
nl_object_diff64
uint64_t nl_object_diff64(struct nl_object *a, struct nl_object *b)
Compute bitmask representing difference in attribute values.
Definition: object.c:362
nl_cache_mngt_register
int nl_cache_mngt_register(struct nl_cache_ops *ops)
Register a set of cache operations.
Definition: cache_mngt.c:253
nl_cache_search
struct nl_object * nl_cache_search(struct nl_cache *cache, struct nl_object *needle)
Search object in cache.
Definition: cache.c:1114
NLA_PUT
#define NLA_PUT(msg, attrtype, attrlen, data)
Add unspecific attribute to netlink message.
Definition: attr.h:165
nl_object_get_msgtype
int nl_object_get_msgtype(const struct nl_object *obj)
Return the netlink message type the object was derived from.
Definition: object.c:530
nl_cache_remove
void nl_cache_remove(struct nl_object *obj)
Remove object from cache.
Definition: cache.c:552
nla_data
void * nla_data(const struct nlattr *nla)
Return pointer to the payload section.
Definition: attr.c:121
xfrmnl_sel_cmp
int xfrmnl_sel_cmp(struct xfrmnl_sel *a, struct xfrmnl_sel *b)
Compares two selector objects.
Definition: selector.c:162
NLA_PUT_U32
#define NLA_PUT_U32(msg, attrtype, value)
Add 32 bit integer attribute to netlink message.
Definition: attr.h:236
nla_policy::minlen
uint16_t minlen
Minimal length of payload required.
Definition: attr.h:74
nl_send_simple
int nl_send_simple(struct nl_sock *sk, int type, int flags, void *buf, size_t size)
Construct and transmit a Netlink message.
Definition: nl.c:581
nl_cache_get_next
struct nl_object * nl_cache_get_next(struct nl_object *obj)
Return the next element in the cache.
Definition: cache.c:146
nlmsg_append
int nlmsg_append(struct nl_msg *n, void *data, size_t len, int pad)
Append data to tail of a netlink message.
Definition: msg.c:449
nl_wait_for_ack
int nl_wait_for_ack(struct nl_sock *sk)
Wait for ACK.
Definition: nl.c:1113
nl_object_put
void nl_object_put(struct nl_object *obj)
Release a reference from an object.
Definition: object.c:216
nl_cache_move
int nl_cache_move(struct nl_cache *cache, struct nl_object *obj)
Move object from one cache to another.
Definition: cache.c:524
nl_addr_put
void nl_addr_put(struct nl_addr *addr)
Decrease the reference counter of an abstract address.
Definition: addr.c:540
nlmsg_alloc_simple
struct nl_msg * nlmsg_alloc_simple(int nlmsgtype, int flags)
Allocate a new netlink message.
Definition: msg.c:348
xfrmnl_sel_alloc
struct xfrmnl_sel * xfrmnl_sel_alloc()
Allocate new selector object.
Definition: selector.c:78
NLA_U32
32 bit integer
Definition: attr.h:43
xfrmnl_sel_clone
struct xfrmnl_sel * xfrmnl_sel_clone(struct xfrmnl_sel *sel)
Clone existing selector object.
Definition: selector.c:97
xfrmnl_ltime_cfg_alloc
struct xfrmnl_ltime_cfg * xfrmnl_ltime_cfg_alloc()
Allocate new lifetime config object.
Definition: lifetime.c:76
nl_dump_params
Dumping parameters.
Definition: types.h:33
xfrmnl_ltime_cfg_cmp
int xfrmnl_ltime_cfg_cmp(struct xfrmnl_ltime_cfg *a, struct xfrmnl_ltime_cfg *b)
Compares two lifetime config objects.
Definition: lifetime.c:156
nl_dump
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
Definition: utils.c:962
nl_send_auto
int nl_send_auto(struct nl_sock *sk, struct nl_msg *msg)
Finalize and transmit Netlink message.
Definition: nl.c:517
nla_put
int nla_put(struct nl_msg *msg, int attrtype, int datalen, const void *data)
Add a unspecific attribute to netlink message.
Definition: attr.c:501
nl_addr_get_len
unsigned int nl_addr_get_len(const struct nl_addr *addr)
Get length of binary address of abstract address object.
Definition: addr.c:954
NL_DUMP_STATS
Dump all attributes including statistics.
Definition: types.h:24
nl_cache_get_first
struct nl_object * nl_cache_get_first(struct nl_cache *cache)
Return the first element in the cache.
Definition: cache.c:120
nl_addr_get_binary_addr
void * nl_addr_get_binary_addr(const struct nl_addr *addr)
Get binary address of abstract address object.
Definition: addr.c:942
nl_cache_alloc_and_fill
int nl_cache_alloc_and_fill(struct nl_cache_ops *ops, struct nl_sock *sock, struct nl_cache **result)
Allocate new cache and fill it.
Definition: cache.c:234
nl_addr2str
char * nl_addr2str(const struct nl_addr *addr, char *buf, size_t size)
Convert abstract address object to character string.
Definition: addr.c:1000
nl_addr_get_family
int nl_addr_get_family(const struct nl_addr *addr)
Return address family.
Definition: addr.c:894