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1 /* $USAGI: $ */
2
3 /*
4 * Copyright (C)2004 USAGI/WIDE Project
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses>.
18 */
19 /*
20 * based on iproute.c
21 */
22 /*
23 * Authors:
24 * Masahide NAKAMURA @USAGI
25 */
26
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <netdb.h>
31 #include "utils.h"
32 #include "xfrm.h"
33 #include "ip_common.h"
34
35 /* #define NLMSG_DELETEALL_BUF_SIZE (4096-512) */
36 #define NLMSG_DELETEALL_BUF_SIZE 8192
37
38 /*
39 * Receiving buffer defines:
40 * nlmsg
41 * data = struct xfrm_usersa_info
42 * rtattr
43 * rtattr
44 * ... (max count of rtattr is XFRM_MAX+1
45 *
46 * each rtattr data = struct xfrm_algo(dynamic size) or xfrm_address_t
47 */
48 #define NLMSG_BUF_SIZE 4096
49 #define RTA_BUF_SIZE 2048
50 #define XFRM_ALGO_KEY_BUF_SIZE 512
51 #define CTX_BUF_SIZE 256
52
53 static void usage(void) __attribute__((noreturn));
54
55 static void usage(void)
56 {
57 fprintf(stderr, "Usage: ip xfrm state { add | update } ID [ ALGO-LIST ] [ mode MODE ]\n");
58 fprintf(stderr, " [ mark MARK [ mask MASK ] ] [ reqid REQID ] [ seq SEQ ]\n");
59 fprintf(stderr, " [ replay-window SIZE ] [ replay-seq SEQ ] [ replay-oseq SEQ ]\n");
60 fprintf(stderr, " [ replay-seq-hi SEQ ] [ replay-oseq-hi SEQ ]\n");
61 fprintf(stderr, " [ flag FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ] [ encap ENCAP ]\n");
62 fprintf(stderr, " [ coa ADDR[/PLEN] ] [ ctx CTX ] [ extra-flag EXTRA-FLAG-LIST ]\n");
63 fprintf(stderr, "Usage: ip xfrm state allocspi ID [ mode MODE ] [ mark MARK [ mask MASK ] ]\n");
64 fprintf(stderr, " [ reqid REQID ] [ seq SEQ ] [ min SPI max SPI ]\n");
65 fprintf(stderr, "Usage: ip xfrm state { delete | get } ID [ mark MARK [ mask MASK ] ]\n");
66 fprintf(stderr, "Usage: ip xfrm state { deleteall | list } [ ID ] [ mode MODE ] [ reqid REQID ]\n");
67 fprintf(stderr, " [ flag FLAG-LIST ]\n");
68 fprintf(stderr, "Usage: ip xfrm state flush [ proto XFRM-PROTO ]\n");
69 fprintf(stderr, "Usage: ip xfrm state count\n");
70 fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM-PROTO ] [ spi SPI ]\n");
71 fprintf(stderr, "XFRM-PROTO := ");
72 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ESP));
73 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_AH));
74 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_COMP));
75 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ROUTING));
76 fprintf(stderr, "%s\n", strxf_xfrmproto(IPPROTO_DSTOPTS));
77 fprintf(stderr, "ALGO-LIST := [ ALGO-LIST ] ALGO\n");
78 fprintf(stderr, "ALGO := { ");
79 fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_CRYPT));
80 fprintf(stderr, "%s", strxf_algotype(XFRMA_ALG_AUTH));
81 fprintf(stderr, " } ALGO-NAME ALGO-KEYMAT |\n");
82 fprintf(stderr, " %s", strxf_algotype(XFRMA_ALG_AUTH_TRUNC));
83 fprintf(stderr, " ALGO-NAME ALGO-KEYMAT ALGO-TRUNC-LEN |\n");
84 fprintf(stderr, " %s", strxf_algotype(XFRMA_ALG_AEAD));
85 fprintf(stderr, " ALGO-NAME ALGO-KEYMAT ALGO-ICV-LEN |\n");
86 fprintf(stderr, " %s", strxf_algotype(XFRMA_ALG_COMP));
87 fprintf(stderr, " ALGO-NAME\n");
88 fprintf(stderr, "MODE := transport | tunnel | beet | ro | in_trigger\n");
89 fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
90 fprintf(stderr, "FLAG := noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec | align4 | esn\n");
91 fprintf(stderr, "EXTRA-FLAG-LIST := [ EXTRA-FLAG-LIST ] EXTRA-FLAG\n");
92 fprintf(stderr, "EXTRA-FLAG := dont-encap-dscp\n");
93 fprintf(stderr, "SELECTOR := [ src ADDR[/PLEN] ] [ dst ADDR[/PLEN] ] [ dev DEV ] [ UPSPEC ]\n");
94 fprintf(stderr, "UPSPEC := proto { { ");
95 fprintf(stderr, "%s | ", strxf_proto(IPPROTO_TCP));
96 fprintf(stderr, "%s | ", strxf_proto(IPPROTO_UDP));
97 fprintf(stderr, "%s | ", strxf_proto(IPPROTO_SCTP));
98 fprintf(stderr, "%s", strxf_proto(IPPROTO_DCCP));
99 fprintf(stderr, " } [ sport PORT ] [ dport PORT ] |\n");
100 fprintf(stderr, " { ");
101 fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMP));
102 fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMPV6));
103 fprintf(stderr, "%s", strxf_proto(IPPROTO_MH));
104 fprintf(stderr, " } [ type NUMBER ] [ code NUMBER ] |\n");
105 fprintf(stderr, " %s", strxf_proto(IPPROTO_GRE));
106 fprintf(stderr, " [ key { DOTTED-QUAD | NUMBER } ] | PROTO }\n");
107 fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] limit LIMIT\n");
108 fprintf(stderr, "LIMIT := { time-soft | time-hard | time-use-soft | time-use-hard } SECONDS |\n");
109 fprintf(stderr, " { byte-soft | byte-hard } SIZE | { packet-soft | packet-hard } COUNT\n");
110 fprintf(stderr, "ENCAP := { espinudp | espinudp-nonike } SPORT DPORT OADDR\n");
111
112 exit(-1);
113 }
114
115 static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
116 char *name, char *key, char *buf, int max)
117 {
118 int len;
119 int slen = strlen(key);
120
121 #if 0
122 /* XXX: verifying both name and key is required! */
123 fprintf(stderr, "warning: ALGO-NAME/ALGO-KEYMAT values will be sent to the kernel promiscuously! (verifying them isn't implemented yet)\n");
124 #endif
125
126 strncpy(alg->alg_name, name, sizeof(alg->alg_name));
127
128 if (slen > 2 && strncmp(key, "0x", 2) == 0) {
129 /* split two chars "0x" from the top */
130 char *p = key + 2;
131 int plen = slen - 2;
132 int i;
133 int j;
134
135 /* Converting hexadecimal numbered string into real key;
136 * Convert each two chars into one char(value). If number
137 * of the length is odd, add zero on the top for rounding.
138 */
139
140 /* calculate length of the converted values(real key) */
141 len = (plen + 1) / 2;
142 if (len > max)
143 invarg("ALGO-KEYMAT value makes buffer overflow\n", key);
144
145 for (i = -(plen % 2), j = 0; j < len; i += 2, j++) {
146 char vbuf[3];
147 __u8 val;
148
149 vbuf[0] = i >= 0 ? p[i] : '0';
150 vbuf[1] = p[i + 1];
151 vbuf[2] = '\0';
152
153 if (get_u8(&val, vbuf, 16))
154 invarg("ALGO-KEYMAT value is invalid", key);
155
156 buf[j] = val;
157 }
158 } else {
159 len = slen;
160 if (len > 0) {
161 if (len > max)
162 invarg("ALGO-KEYMAT value makes buffer overflow\n", key);
163
164 memcpy(buf, key, len);
165 }
166 }
167
168 alg->alg_key_len = len * 8;
169
170 return 0;
171 }
172
173 static int xfrm_seq_parse(__u32 *seq, int *argcp, char ***argvp)
174 {
175 int argc = *argcp;
176 char **argv = *argvp;
177
178 if (get_be32(seq, *argv, 0))
179 invarg("SEQ value is invalid", *argv);
180
181 *argcp = argc;
182 *argvp = argv;
183
184 return 0;
185 }
186
187 static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp)
188 {
189 int argc = *argcp;
190 char **argv = *argvp;
191 int len = strlen(*argv);
192
193 if (len > 2 && strncmp(*argv, "0x", 2) == 0) {
194 __u8 val = 0;
195
196 if (get_u8(&val, *argv, 16))
197 invarg("FLAG value is invalid", *argv);
198 *flags = val;
199 } else {
200 while (1) {
201 if (strcmp(*argv, "noecn") == 0)
202 *flags |= XFRM_STATE_NOECN;
203 else if (strcmp(*argv, "decap-dscp") == 0)
204 *flags |= XFRM_STATE_DECAP_DSCP;
205 else if (strcmp(*argv, "nopmtudisc") == 0)
206 *flags |= XFRM_STATE_NOPMTUDISC;
207 else if (strcmp(*argv, "wildrecv") == 0)
208 *flags |= XFRM_STATE_WILDRECV;
209 else if (strcmp(*argv, "icmp") == 0)
210 *flags |= XFRM_STATE_ICMP;
211 else if (strcmp(*argv, "af-unspec") == 0)
212 *flags |= XFRM_STATE_AF_UNSPEC;
213 else if (strcmp(*argv, "align4") == 0)
214 *flags |= XFRM_STATE_ALIGN4;
215 else if (strcmp(*argv, "esn") == 0)
216 *flags |= XFRM_STATE_ESN;
217 else {
218 PREV_ARG(); /* back track */
219 break;
220 }
221
222 if (!NEXT_ARG_OK())
223 break;
224 NEXT_ARG();
225 }
226 }
227
228 *argcp = argc;
229 *argvp = argv;
230
231 return 0;
232 }
233
234 static int xfrm_state_extra_flag_parse(__u32 *extra_flags, int *argcp, char ***argvp)
235 {
236 int argc = *argcp;
237 char **argv = *argvp;
238 int len = strlen(*argv);
239
240 if (len > 2 && strncmp(*argv, "0x", 2) == 0) {
241 __u32 val = 0;
242
243 if (get_u32(&val, *argv, 16))
244 invarg("\"EXTRA-FLAG\" is invalid", *argv);
245 *extra_flags = val;
246 } else {
247 while (1) {
248 if (strcmp(*argv, "dont-encap-dscp") == 0)
249 *extra_flags |= XFRM_SA_XFLAG_DONT_ENCAP_DSCP;
250 else {
251 PREV_ARG(); /* back track */
252 break;
253 }
254
255 if (!NEXT_ARG_OK())
256 break;
257 NEXT_ARG();
258 }
259 }
260
261 *argcp = argc;
262 *argvp = argv;
263
264 return 0;
265 }
266
267 static int xfrm_state_modify(int cmd, unsigned int flags, int argc, char **argv)
268 {
269 struct rtnl_handle rth;
270 struct {
271 struct nlmsghdr n;
272 struct xfrm_usersa_info xsinfo;
273 char buf[RTA_BUF_SIZE];
274 } req = {
275 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsinfo)),
276 .n.nlmsg_flags = NLM_F_REQUEST | flags,
277 .n.nlmsg_type = cmd,
278 .xsinfo.family = preferred_family,
279 .xsinfo.lft.soft_byte_limit = XFRM_INF,
280 .xsinfo.lft.hard_byte_limit = XFRM_INF,
281 .xsinfo.lft.soft_packet_limit = XFRM_INF,
282 .xsinfo.lft.hard_packet_limit = XFRM_INF,
283 };
284 struct xfrm_replay_state replay = {};
285 struct xfrm_replay_state_esn replay_esn = {};
286 __u32 replay_window = 0;
287 __u32 seq = 0, oseq = 0, seq_hi = 0, oseq_hi = 0;
288 char *idp = NULL;
289 char *aeadop = NULL;
290 char *ealgop = NULL;
291 char *aalgop = NULL;
292 char *calgop = NULL;
293 char *coap = NULL;
294 char *sctxp = NULL;
295 __u32 extra_flags = 0;
296 struct xfrm_mark mark = {0, 0};
297 struct {
298 struct xfrm_user_sec_ctx sctx;
299 char str[CTX_BUF_SIZE];
300 } ctx = {};
301
302 while (argc > 0) {
303 if (strcmp(*argv, "mode") == 0) {
304 NEXT_ARG();
305 xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv);
306 } else if (strcmp(*argv, "mark") == 0) {
307 xfrm_parse_mark(&mark, &argc, &argv);
308 } else if (strcmp(*argv, "reqid") == 0) {
309 NEXT_ARG();
310 xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv);
311 } else if (strcmp(*argv, "seq") == 0) {
312 NEXT_ARG();
313 xfrm_seq_parse(&req.xsinfo.seq, &argc, &argv);
314 } else if (strcmp(*argv, "replay-window") == 0) {
315 NEXT_ARG();
316 if (get_u32(&replay_window, *argv, 0))
317 invarg("value after \"replay-window\" is invalid", *argv);
318 } else if (strcmp(*argv, "replay-seq") == 0) {
319 NEXT_ARG();
320 if (get_u32(&seq, *argv, 0))
321 invarg("value after \"replay-seq\" is invalid", *argv);
322 } else if (strcmp(*argv, "replay-seq-hi") == 0) {
323 NEXT_ARG();
324 if (get_u32(&seq_hi, *argv, 0))
325 invarg("value after \"replay-seq-hi\" is invalid", *argv);
326 } else if (strcmp(*argv, "replay-oseq") == 0) {
327 NEXT_ARG();
328 if (get_u32(&oseq, *argv, 0))
329 invarg("value after \"replay-oseq\" is invalid", *argv);
330 } else if (strcmp(*argv, "replay-oseq-hi") == 0) {
331 NEXT_ARG();
332 if (get_u32(&oseq_hi, *argv, 0))
333 invarg("value after \"replay-oseq-hi\" is invalid", *argv);
334 } else if (strcmp(*argv, "flag") == 0) {
335 NEXT_ARG();
336 xfrm_state_flag_parse(&req.xsinfo.flags, &argc, &argv);
337 } else if (strcmp(*argv, "extra-flag") == 0) {
338 NEXT_ARG();
339 xfrm_state_extra_flag_parse(&extra_flags, &argc, &argv);
340 } else if (strcmp(*argv, "sel") == 0) {
341 NEXT_ARG();
342 preferred_family = AF_UNSPEC;
343 xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv);
344 preferred_family = req.xsinfo.sel.family;
345 } else if (strcmp(*argv, "limit") == 0) {
346 NEXT_ARG();
347 xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv);
348 } else if (strcmp(*argv, "encap") == 0) {
349 struct xfrm_encap_tmpl encap;
350 inet_prefix oa;
351 NEXT_ARG();
352 xfrm_encap_type_parse(&encap.encap_type, &argc, &argv);
353 NEXT_ARG();
354 if (get_be16(&encap.encap_sport, *argv, 0))
355 invarg("SPORT value after \"encap\" is invalid", *argv);
356 NEXT_ARG();
357 if (get_be16(&encap.encap_dport, *argv, 0))
358 invarg("DPORT value after \"encap\" is invalid", *argv);
359 NEXT_ARG();
360 get_addr(&oa, *argv, AF_UNSPEC);
361 memcpy(&encap.encap_oa, &oa.data, sizeof(encap.encap_oa));
362 addattr_l(&req.n, sizeof(req.buf), XFRMA_ENCAP,
363 (void *)&encap, sizeof(encap));
364 } else if (strcmp(*argv, "coa") == 0) {
365 inet_prefix coa;
366 xfrm_address_t xcoa = {};
367
368 if (coap)
369 duparg("coa", *argv);
370 coap = *argv;
371
372 NEXT_ARG();
373
374 get_prefix(&coa, *argv, preferred_family);
375 if (coa.family == AF_UNSPEC)
376 invarg("value after \"coa\" has an unrecognized address family", *argv);
377 if (coa.bytelen > sizeof(xcoa))
378 invarg("value after \"coa\" is too large", *argv);
379
380 memcpy(&xcoa, &coa.data, coa.bytelen);
381
382 addattr_l(&req.n, sizeof(req.buf), XFRMA_COADDR,
383 (void *)&xcoa, sizeof(xcoa));
384 } else if (strcmp(*argv, "ctx") == 0) {
385 char *context;
386
387 if (sctxp)
388 duparg("ctx", *argv);
389 sctxp = *argv;
390
391 NEXT_ARG();
392 context = *argv;
393
394 xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
395 addattr_l(&req.n, sizeof(req.buf), XFRMA_SEC_CTX,
396 (void *)&ctx, ctx.sctx.len);
397 } else {
398 /* try to assume ALGO */
399 int type = xfrm_algotype_getbyname(*argv);
400
401 switch (type) {
402 case XFRMA_ALG_AEAD:
403 case XFRMA_ALG_CRYPT:
404 case XFRMA_ALG_AUTH:
405 case XFRMA_ALG_AUTH_TRUNC:
406 case XFRMA_ALG_COMP:
407 {
408 /* ALGO */
409 struct {
410 union {
411 struct xfrm_algo alg;
412 struct xfrm_algo_aead aead;
413 struct xfrm_algo_auth auth;
414 } u;
415 char buf[XFRM_ALGO_KEY_BUF_SIZE];
416 } alg = {};
417 int len;
418 __u32 icvlen, trunclen;
419 char *name;
420 char *key = "";
421 char *buf;
422
423 switch (type) {
424 case XFRMA_ALG_AEAD:
425 if (ealgop || aalgop || aeadop)
426 duparg("ALGO-TYPE", *argv);
427 aeadop = *argv;
428 break;
429 case XFRMA_ALG_CRYPT:
430 if (ealgop || aeadop)
431 duparg("ALGO-TYPE", *argv);
432 ealgop = *argv;
433 break;
434 case XFRMA_ALG_AUTH:
435 case XFRMA_ALG_AUTH_TRUNC:
436 if (aalgop || aeadop)
437 duparg("ALGO-TYPE", *argv);
438 aalgop = *argv;
439 break;
440 case XFRMA_ALG_COMP:
441 if (calgop)
442 duparg("ALGO-TYPE", *argv);
443 calgop = *argv;
444 break;
445 default:
446 /* not reached */
447 invarg("ALGO-TYPE value is invalid\n", *argv);
448 }
449
450 if (!NEXT_ARG_OK())
451 missarg("ALGO-NAME");
452 NEXT_ARG();
453 name = *argv;
454
455 switch (type) {
456 case XFRMA_ALG_AEAD:
457 case XFRMA_ALG_CRYPT:
458 case XFRMA_ALG_AUTH:
459 case XFRMA_ALG_AUTH_TRUNC:
460 if (!NEXT_ARG_OK())
461 missarg("ALGO-KEYMAT");
462 NEXT_ARG();
463 key = *argv;
464 break;
465 }
466
467 buf = alg.u.alg.alg_key;
468 len = sizeof(alg.u.alg);
469
470 switch (type) {
471 case XFRMA_ALG_AEAD:
472 if (!NEXT_ARG_OK())
473 missarg("ALGO-ICV-LEN");
474 NEXT_ARG();
475 if (get_u32(&icvlen, *argv, 0))
476 invarg("ALGO-ICV-LEN value is invalid",
477 *argv);
478 alg.u.aead.alg_icv_len = icvlen;
479
480 buf = alg.u.aead.alg_key;
481 len = sizeof(alg.u.aead);
482 break;
483 case XFRMA_ALG_AUTH_TRUNC:
484 if (!NEXT_ARG_OK())
485 missarg("ALGO-TRUNC-LEN");
486 NEXT_ARG();
487 if (get_u32(&trunclen, *argv, 0))
488 invarg("ALGO-TRUNC-LEN value is invalid",
489 *argv);
490 alg.u.auth.alg_trunc_len = trunclen;
491
492 buf = alg.u.auth.alg_key;
493 len = sizeof(alg.u.auth);
494 break;
495 }
496
497 xfrm_algo_parse((void *)&alg, type, name, key,
498 buf, sizeof(alg.buf));
499 len += alg.u.alg.alg_key_len;
500
501 addattr_l(&req.n, sizeof(req.buf), type,
502 (void *)&alg, len);
503 break;
504 }
505 default:
506 /* try to assume ID */
507 if (idp)
508 invarg("unknown", *argv);
509 idp = *argv;
510
511 /* ID */
512 xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id,
513 &req.xsinfo.family, 0, &argc, &argv);
514 if (preferred_family == AF_UNSPEC)
515 preferred_family = req.xsinfo.family;
516 }
517 }
518 argc--; argv++;
519 }
520
521 if (req.xsinfo.flags & XFRM_STATE_ESN &&
522 replay_window == 0) {
523 fprintf(stderr, "Error: esn flag set without replay-window.\n");
524 exit(-1);
525 }
526
527 if (replay_window > XFRMA_REPLAY_ESN_MAX) {
528 fprintf(stderr,
529 "Error: replay-window (%u) > XFRMA_REPLAY_ESN_MAX (%u).\n",
530 replay_window, XFRMA_REPLAY_ESN_MAX);
531 exit(-1);
532 }
533
534 if (req.xsinfo.flags & XFRM_STATE_ESN ||
535 replay_window > (sizeof(replay.bitmap) * 8)) {
536 replay_esn.seq = seq;
537 replay_esn.oseq = oseq;
538 replay_esn.seq_hi = seq_hi;
539 replay_esn.oseq_hi = oseq_hi;
540 replay_esn.replay_window = replay_window;
541 replay_esn.bmp_len = (replay_window + sizeof(__u32) * 8 - 1) /
542 (sizeof(__u32) * 8);
543 addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_ESN_VAL,
544 &replay_esn, sizeof(replay_esn));
545 } else {
546 if (seq || oseq) {
547 replay.seq = seq;
548 replay.oseq = oseq;
549 addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_VAL,
550 &replay, sizeof(replay));
551 }
552 req.xsinfo.replay_window = replay_window;
553 }
554
555 if (extra_flags)
556 addattr32(&req.n, sizeof(req.buf), XFRMA_SA_EXTRA_FLAGS,
557 extra_flags);
558
559 if (!idp) {
560 fprintf(stderr, "Not enough information: ID is required\n");
561 exit(1);
562 }
563
564 if (mark.m) {
565 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
566 (void *)&mark, sizeof(mark));
567 if (r < 0) {
568 fprintf(stderr, "XFRMA_MARK failed\n");
569 exit(1);
570 }
571 }
572
573 if (xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
574 switch (req.xsinfo.mode) {
575 case XFRM_MODE_TRANSPORT:
576 case XFRM_MODE_TUNNEL:
577 break;
578 case XFRM_MODE_BEET:
579 if (req.xsinfo.id.proto == IPPROTO_ESP)
580 break;
581 default:
582 fprintf(stderr, "MODE value is invalid with XFRM-PROTO value \"%s\"\n",
583 strxf_xfrmproto(req.xsinfo.id.proto));
584 exit(1);
585 }
586
587 switch (req.xsinfo.id.proto) {
588 case IPPROTO_ESP:
589 if (calgop) {
590 fprintf(stderr, "ALGO-TYPE value \"%s\" is invalid with XFRM-PROTO value \"%s\"\n",
591 strxf_algotype(XFRMA_ALG_COMP),
592 strxf_xfrmproto(req.xsinfo.id.proto));
593 exit(1);
594 }
595 if (!ealgop && !aeadop) {
596 fprintf(stderr, "ALGO-TYPE value \"%s\" or \"%s\" is required with XFRM-PROTO value \"%s\"\n",
597 strxf_algotype(XFRMA_ALG_CRYPT),
598 strxf_algotype(XFRMA_ALG_AEAD),
599 strxf_xfrmproto(req.xsinfo.id.proto));
600 exit(1);
601 }
602 break;
603 case IPPROTO_AH:
604 if (ealgop || aeadop || calgop) {
605 fprintf(stderr, "ALGO-TYPE values \"%s\", \"%s\", and \"%s\" are invalid with XFRM-PROTO value \"%s\"\n",
606 strxf_algotype(XFRMA_ALG_CRYPT),
607 strxf_algotype(XFRMA_ALG_AEAD),
608 strxf_algotype(XFRMA_ALG_COMP),
609 strxf_xfrmproto(req.xsinfo.id.proto));
610 exit(1);
611 }
612 if (!aalgop) {
613 fprintf(stderr, "ALGO-TYPE value \"%s\" or \"%s\" is required with XFRM-PROTO value \"%s\"\n",
614 strxf_algotype(XFRMA_ALG_AUTH),
615 strxf_algotype(XFRMA_ALG_AUTH_TRUNC),
616 strxf_xfrmproto(req.xsinfo.id.proto));
617 exit(1);
618 }
619 break;
620 case IPPROTO_COMP:
621 if (ealgop || aalgop || aeadop) {
622 fprintf(stderr, "ALGO-TYPE values \"%s\", \"%s\", \"%s\", and \"%s\" are invalid with XFRM-PROTO value \"%s\"\n",
623 strxf_algotype(XFRMA_ALG_CRYPT),
624 strxf_algotype(XFRMA_ALG_AUTH),
625 strxf_algotype(XFRMA_ALG_AUTH_TRUNC),
626 strxf_algotype(XFRMA_ALG_AEAD),
627 strxf_xfrmproto(req.xsinfo.id.proto));
628 exit(1);
629 }
630 if (!calgop) {
631 fprintf(stderr, "ALGO-TYPE value \"%s\" is required with XFRM-PROTO value \"%s\"\n",
632 strxf_algotype(XFRMA_ALG_COMP),
633 strxf_xfrmproto(req.xsinfo.id.proto));
634 exit(1);
635 }
636 break;
637 }
638 } else {
639 if (ealgop || aalgop || aeadop || calgop) {
640 fprintf(stderr, "ALGO is invalid with XFRM-PROTO value \"%s\"\n",
641 strxf_xfrmproto(req.xsinfo.id.proto));
642 exit(1);
643 }
644 }
645
646 if (xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
647 switch (req.xsinfo.mode) {
648 case XFRM_MODE_ROUTEOPTIMIZATION:
649 case XFRM_MODE_IN_TRIGGER:
650 break;
651 case 0:
652 fprintf(stderr, "\"mode\" is required with XFRM-PROTO value \"%s\"\n",
653 strxf_xfrmproto(req.xsinfo.id.proto));
654 exit(1);
655 default:
656 fprintf(stderr, "MODE value is invalid with XFRM-PROTO value \"%s\"\n",
657 strxf_xfrmproto(req.xsinfo.id.proto));
658 exit(1);
659 }
660
661 if (!coap) {
662 fprintf(stderr, "\"coa\" is required with XFRM-PROTO value \"%s\"\n",
663 strxf_xfrmproto(req.xsinfo.id.proto));
664 exit(1);
665 }
666 } else {
667 if (coap) {
668 fprintf(stderr, "\"coa\" is invalid with XFRM-PROTO value \"%s\"\n",
669 strxf_xfrmproto(req.xsinfo.id.proto));
670 exit(1);
671 }
672 }
673
674 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
675 exit(1);
676
677 if (req.xsinfo.family == AF_UNSPEC)
678 req.xsinfo.family = AF_INET;
679
680 if (rtnl_talk(&rth, &req.n, NULL, 0) < 0)
681 exit(2);
682
683 rtnl_close(&rth);
684
685 return 0;
686 }
687
688 static int xfrm_state_allocspi(int argc, char **argv)
689 {
690 struct rtnl_handle rth;
691 struct {
692 struct nlmsghdr n;
693 struct xfrm_userspi_info xspi;
694 char buf[RTA_BUF_SIZE];
695 } req = {
696 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xspi)),
697 .n.nlmsg_flags = NLM_F_REQUEST,
698 .n.nlmsg_type = XFRM_MSG_ALLOCSPI,
699 .xspi.info.family = preferred_family,
700 #if 0
701 .xspi.lft.soft_byte_limit = XFRM_INF,
702 .xspi.lft.hard_byte_limit = XFRM_INF,
703 .xspi.lft.soft_packet_limit = XFRM_INF,
704 .xspi.lft.hard_packet_limit = XFRM_INF,
705 #endif
706 };
707 char *idp = NULL;
708 char *minp = NULL;
709 char *maxp = NULL;
710 struct xfrm_mark mark = {0, 0};
711 char res_buf[NLMSG_BUF_SIZE] = {};
712 struct nlmsghdr *res_n = (struct nlmsghdr *)res_buf;
713
714 while (argc > 0) {
715 if (strcmp(*argv, "mode") == 0) {
716 NEXT_ARG();
717 xfrm_mode_parse(&req.xspi.info.mode, &argc, &argv);
718 } else if (strcmp(*argv, "mark") == 0) {
719 xfrm_parse_mark(&mark, &argc, &argv);
720 } else if (strcmp(*argv, "reqid") == 0) {
721 NEXT_ARG();
722 xfrm_reqid_parse(&req.xspi.info.reqid, &argc, &argv);
723 } else if (strcmp(*argv, "seq") == 0) {
724 NEXT_ARG();
725 xfrm_seq_parse(&req.xspi.info.seq, &argc, &argv);
726 } else if (strcmp(*argv, "min") == 0) {
727 if (minp)
728 duparg("min", *argv);
729 minp = *argv;
730
731 NEXT_ARG();
732
733 if (get_u32(&req.xspi.min, *argv, 0))
734 invarg("value after \"min\" is invalid", *argv);
735 } else if (strcmp(*argv, "max") == 0) {
736 if (maxp)
737 duparg("max", *argv);
738 maxp = *argv;
739
740 NEXT_ARG();
741
742 if (get_u32(&req.xspi.max, *argv, 0))
743 invarg("value after \"max\" is invalid", *argv);
744 } else {
745 /* try to assume ID */
746 if (idp)
747 invarg("unknown", *argv);
748 idp = *argv;
749
750 /* ID */
751 xfrm_id_parse(&req.xspi.info.saddr, &req.xspi.info.id,
752 &req.xspi.info.family, 0, &argc, &argv);
753 if (req.xspi.info.id.spi) {
754 fprintf(stderr, "\"spi\" is invalid\n");
755 exit(1);
756 }
757 if (preferred_family == AF_UNSPEC)
758 preferred_family = req.xspi.info.family;
759 }
760 argc--; argv++;
761 }
762
763 if (!idp) {
764 fprintf(stderr, "Not enough information: ID is required\n");
765 exit(1);
766 }
767
768 if (minp) {
769 if (!maxp) {
770 fprintf(stderr, "\"max\" is missing\n");
771 exit(1);
772 }
773 if (req.xspi.min > req.xspi.max) {
774 fprintf(stderr, "value after \"min\" is larger than value after \"max\"\n");
775 exit(1);
776 }
777 } else {
778 if (maxp) {
779 fprintf(stderr, "\"min\" is missing\n");
780 exit(1);
781 }
782
783 /* XXX: Default value defined in PF_KEY;
784 * See kernel's net/key/af_key.c(pfkey_getspi).
785 */
786 req.xspi.min = 0x100;
787 req.xspi.max = 0x0fffffff;
788
789 /* XXX: IPCOMP spi is 16-bits;
790 * See kernel's net/xfrm/xfrm_user(verify_userspi_info).
791 */
792 if (req.xspi.info.id.proto == IPPROTO_COMP)
793 req.xspi.max = 0xffff;
794 }
795
796 if (mark.m & mark.v) {
797 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
798 (void *)&mark, sizeof(mark));
799 if (r < 0) {
800 fprintf(stderr, "XFRMA_MARK failed\n");
801 exit(1);
802 }
803 }
804
805 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
806 exit(1);
807
808 if (req.xspi.info.family == AF_UNSPEC)
809 req.xspi.info.family = AF_INET;
810
811
812 if (rtnl_talk(&rth, &req.n, res_n, sizeof(res_buf)) < 0)
813 exit(2);
814
815 if (xfrm_state_print(NULL, res_n, (void *)stdout) < 0) {
816 fprintf(stderr, "An error :-)\n");
817 exit(1);
818 }
819
820 rtnl_close(&rth);
821
822 return 0;
823 }
824
825 static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo)
826 {
827 if (!filter.use)
828 return 1;
829
830 if (filter.id_src_mask)
831 if (xfrm_addr_match(&xsinfo->saddr, &filter.xsinfo.saddr,
832 filter.id_src_mask))
833 return 0;
834 if (filter.id_dst_mask)
835 if (xfrm_addr_match(&xsinfo->id.daddr, &filter.xsinfo.id.daddr,
836 filter.id_dst_mask))
837 return 0;
838 if ((xsinfo->id.proto^filter.xsinfo.id.proto)&filter.id_proto_mask)
839 return 0;
840 if ((xsinfo->id.spi^filter.xsinfo.id.spi)&filter.id_spi_mask)
841 return 0;
842 if ((xsinfo->mode^filter.xsinfo.mode)&filter.mode_mask)
843 return 0;
844 if ((xsinfo->reqid^filter.xsinfo.reqid)&filter.reqid_mask)
845 return 0;
846 if (filter.state_flags_mask)
847 if ((xsinfo->flags & filter.xsinfo.flags) == 0)
848 return 0;
849
850 return 1;
851 }
852
853 int xfrm_state_print(const struct sockaddr_nl *who, struct nlmsghdr *n,
854 void *arg)
855 {
856 FILE *fp = (FILE *)arg;
857 struct rtattr *tb[XFRMA_MAX+1];
858 struct rtattr *rta;
859 struct xfrm_usersa_info *xsinfo = NULL;
860 struct xfrm_user_expire *xexp = NULL;
861 struct xfrm_usersa_id *xsid = NULL;
862 int len = n->nlmsg_len;
863
864 if (n->nlmsg_type != XFRM_MSG_NEWSA &&
865 n->nlmsg_type != XFRM_MSG_DELSA &&
866 n->nlmsg_type != XFRM_MSG_UPDSA &&
867 n->nlmsg_type != XFRM_MSG_EXPIRE) {
868 fprintf(stderr, "Not a state: %08x %08x %08x\n",
869 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
870 return 0;
871 }
872
873 if (n->nlmsg_type == XFRM_MSG_DELSA) {
874 /* Dont blame me for this .. Herbert made me do it */
875 xsid = NLMSG_DATA(n);
876 len -= NLMSG_SPACE(sizeof(*xsid));
877 } else if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
878 xexp = NLMSG_DATA(n);
879 xsinfo = &xexp->state;
880 len -= NLMSG_SPACE(sizeof(*xexp));
881 } else {
882 xexp = NULL;
883 xsinfo = NLMSG_DATA(n);
884 len -= NLMSG_SPACE(sizeof(*xsinfo));
885 }
886
887 if (len < 0) {
888 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
889 return -1;
890 }
891
892 if (xsinfo && !xfrm_state_filter_match(xsinfo))
893 return 0;
894
895 if (n->nlmsg_type == XFRM_MSG_DELSA)
896 fprintf(fp, "Deleted ");
897 else if (n->nlmsg_type == XFRM_MSG_UPDSA)
898 fprintf(fp, "Updated ");
899 else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
900 fprintf(fp, "Expired ");
901
902 if (n->nlmsg_type == XFRM_MSG_DELSA)
903 rta = XFRMSID_RTA(xsid);
904 else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
905 rta = XFRMEXP_RTA(xexp);
906 else
907 rta = XFRMS_RTA(xsinfo);
908
909 parse_rtattr(tb, XFRMA_MAX, rta, len);
910
911 if (n->nlmsg_type == XFRM_MSG_DELSA) {
912 /* xfrm_policy_id_print(); */
913
914 if (!tb[XFRMA_SA]) {
915 fprintf(stderr, "Buggy XFRM_MSG_DELSA: no XFRMA_SA\n");
916 return -1;
917 }
918 if (RTA_PAYLOAD(tb[XFRMA_SA]) < sizeof(*xsinfo)) {
919 fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n");
920 return -1;
921 }
922 xsinfo = RTA_DATA(tb[XFRMA_SA]);
923 }
924
925 xfrm_state_info_print(xsinfo, tb, fp, NULL, NULL);
926
927 if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
928 fprintf(fp, "\t");
929 fprintf(fp, "hard %u", xexp->hard);
930 fprintf(fp, "%s", _SL_);
931 }
932
933 if (oneline)
934 fprintf(fp, "\n");
935 fflush(fp);
936
937 return 0;
938 }
939
940 static int xfrm_state_get_or_delete(int argc, char **argv, int delete)
941 {
942 struct rtnl_handle rth;
943 struct {
944 struct nlmsghdr n;
945 struct xfrm_usersa_id xsid;
946 char buf[RTA_BUF_SIZE];
947 } req = {
948 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsid)),
949 .n.nlmsg_flags = NLM_F_REQUEST,
950 .n.nlmsg_type = delete ? XFRM_MSG_DELSA : XFRM_MSG_GETSA,
951 .xsid.family = preferred_family,
952 };
953 struct xfrm_id id;
954 char *idp = NULL;
955 struct xfrm_mark mark = {0, 0};
956
957 while (argc > 0) {
958 xfrm_address_t saddr;
959
960 if (strcmp(*argv, "mark") == 0) {
961 xfrm_parse_mark(&mark, &argc, &argv);
962 } else {
963 if (idp)
964 invarg("unknown", *argv);
965 idp = *argv;
966
967 /* ID */
968 memset(&id, 0, sizeof(id));
969 memset(&saddr, 0, sizeof(saddr));
970 xfrm_id_parse(&saddr, &id, &req.xsid.family, 0,
971 &argc, &argv);
972
973 memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr));
974 req.xsid.spi = id.spi;
975 req.xsid.proto = id.proto;
976
977 addattr_l(&req.n, sizeof(req.buf), XFRMA_SRCADDR,
978 (void *)&saddr, sizeof(saddr));
979 }
980
981 argc--; argv++;
982 }
983
984 if (mark.m & mark.v) {
985 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
986 (void *)&mark, sizeof(mark));
987 if (r < 0) {
988 fprintf(stderr, "XFRMA_MARK failed\n");
989 exit(1);
990 }
991 }
992
993 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
994 exit(1);
995
996 if (req.xsid.family == AF_UNSPEC)
997 req.xsid.family = AF_INET;
998
999 if (delete) {
1000 if (rtnl_talk(&rth, &req.n, NULL, 0) < 0)
1001 exit(2);
1002 } else {
1003 char buf[NLMSG_BUF_SIZE] = {};
1004 struct nlmsghdr *res_n = (struct nlmsghdr *)buf;
1005
1006 if (rtnl_talk(&rth, &req.n, res_n, sizeof(req)) < 0)
1007 exit(2);
1008
1009 if (xfrm_state_print(NULL, res_n, (void *)stdout) < 0) {
1010 fprintf(stderr, "An error :-)\n");
1011 exit(1);
1012 }
1013 }
1014
1015 rtnl_close(&rth);
1016
1017 return 0;
1018 }
1019
1020 /*
1021 * With an existing state of nlmsg, make new nlmsg for deleting the state
1022 * and store it to buffer.
1023 */
1024 static int xfrm_state_keep(const struct sockaddr_nl *who,
1025 struct nlmsghdr *n,
1026 void *arg)
1027 {
1028 struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
1029 struct rtnl_handle *rth = xb->rth;
1030 struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
1031 int len = n->nlmsg_len;
1032 struct nlmsghdr *new_n;
1033 struct xfrm_usersa_id *xsid;
1034
1035 if (n->nlmsg_type != XFRM_MSG_NEWSA) {
1036 fprintf(stderr, "Not a state: %08x %08x %08x\n",
1037 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
1038 return 0;
1039 }
1040
1041 len -= NLMSG_LENGTH(sizeof(*xsinfo));
1042 if (len < 0) {
1043 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
1044 return -1;
1045 }
1046
1047 if (!xfrm_state_filter_match(xsinfo))
1048 return 0;
1049
1050 if (xb->offset > xb->size) {
1051 fprintf(stderr, "State buffer overflow\n");
1052 return -1;
1053 }
1054
1055 new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
1056 new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xsid));
1057 new_n->nlmsg_flags = NLM_F_REQUEST;
1058 new_n->nlmsg_type = XFRM_MSG_DELSA;
1059 new_n->nlmsg_seq = ++rth->seq;
1060
1061 xsid = NLMSG_DATA(new_n);
1062 xsid->family = xsinfo->family;
1063 memcpy(&xsid->daddr, &xsinfo->id.daddr, sizeof(xsid->daddr));
1064 xsid->spi = xsinfo->id.spi;
1065 xsid->proto = xsinfo->id.proto;
1066
1067 addattr_l(new_n, xb->size, XFRMA_SRCADDR, &xsinfo->saddr,
1068 sizeof(xsid->daddr));
1069
1070 xb->offset += new_n->nlmsg_len;
1071 xb->nlmsg_count++;
1072
1073 return 0;
1074 }
1075
1076 static int xfrm_state_list_or_deleteall(int argc, char **argv, int deleteall)
1077 {
1078 char *idp = NULL;
1079 struct rtnl_handle rth;
1080
1081 if (argc > 0)
1082 filter.use = 1;
1083 filter.xsinfo.family = preferred_family;
1084
1085 while (argc > 0) {
1086 if (strcmp(*argv, "mode") == 0) {
1087 NEXT_ARG();
1088 xfrm_mode_parse(&filter.xsinfo.mode, &argc, &argv);
1089
1090 filter.mode_mask = XFRM_FILTER_MASK_FULL;
1091
1092 } else if (strcmp(*argv, "reqid") == 0) {
1093 NEXT_ARG();
1094 xfrm_reqid_parse(&filter.xsinfo.reqid, &argc, &argv);
1095
1096 filter.reqid_mask = XFRM_FILTER_MASK_FULL;
1097
1098 } else if (strcmp(*argv, "flag") == 0) {
1099 NEXT_ARG();
1100 xfrm_state_flag_parse(&filter.xsinfo.flags, &argc, &argv);
1101
1102 filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
1103
1104 } else {
1105 if (idp)
1106 invarg("unknown", *argv);
1107 idp = *argv;
1108
1109 /* ID */
1110 xfrm_id_parse(&filter.xsinfo.saddr, &filter.xsinfo.id,
1111 &filter.xsinfo.family, 1, &argc, &argv);
1112 if (preferred_family == AF_UNSPEC)
1113 preferred_family = filter.xsinfo.family;
1114 }
1115 argc--; argv++;
1116 }
1117
1118 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1119 exit(1);
1120
1121 if (deleteall) {
1122 struct xfrm_buffer xb;
1123 char buf[NLMSG_DELETEALL_BUF_SIZE];
1124 int i;
1125
1126 xb.buf = buf;
1127 xb.size = sizeof(buf);
1128 xb.rth = &rth;
1129
1130 for (i = 0; ; i++) {
1131 struct {
1132 struct nlmsghdr n;
1133 char buf[NLMSG_BUF_SIZE];
1134 } req = {
1135 .n.nlmsg_len = NLMSG_HDRLEN,
1136 .n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
1137 .n.nlmsg_type = XFRM_MSG_GETSA,
1138 .n.nlmsg_seq = rth.dump = ++rth.seq,
1139 };
1140
1141 xb.offset = 0;
1142 xb.nlmsg_count = 0;
1143
1144 if (show_stats > 1)
1145 fprintf(stderr, "Delete-all round = %d\n", i);
1146
1147 if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) {
1148 perror("Cannot send dump request");
1149 exit(1);
1150 }
1151
1152 if (rtnl_dump_filter(&rth, xfrm_state_keep, &xb) < 0) {
1153 fprintf(stderr, "Delete-all terminated\n");
1154 exit(1);
1155 }
1156 if (xb.nlmsg_count == 0) {
1157 if (show_stats > 1)
1158 fprintf(stderr, "Delete-all completed\n");
1159 break;
1160 }
1161
1162 if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) {
1163 perror("Failed to send delete-all request\n");
1164 exit(1);
1165 }
1166 if (show_stats > 1)
1167 fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count);
1168
1169 xb.offset = 0;
1170 xb.nlmsg_count = 0;
1171 }
1172
1173 } else {
1174 struct xfrm_address_filter addrfilter = {
1175 .saddr = filter.xsinfo.saddr,
1176 .daddr = filter.xsinfo.id.daddr,
1177 .family = filter.xsinfo.family,
1178 .splen = filter.id_src_mask,
1179 .dplen = filter.id_dst_mask,
1180 };
1181 struct {
1182 struct nlmsghdr n;
1183 char buf[NLMSG_BUF_SIZE];
1184 } req = {
1185 .n.nlmsg_len = NLMSG_HDRLEN,
1186 .n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
1187 .n.nlmsg_type = XFRM_MSG_GETSA,
1188 .n.nlmsg_seq = rth.dump = ++rth.seq,
1189 };
1190
1191 if (filter.xsinfo.id.proto)
1192 addattr8(&req.n, sizeof(req), XFRMA_PROTO,
1193 filter.xsinfo.id.proto);
1194 addattr_l(&req.n, sizeof(req), XFRMA_ADDRESS_FILTER,
1195 &addrfilter, sizeof(addrfilter));
1196
1197 if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) {
1198 perror("Cannot send dump request");
1199 exit(1);
1200 }
1201
1202 if (rtnl_dump_filter(&rth, xfrm_state_print, stdout) < 0) {
1203 fprintf(stderr, "Dump terminated\n");
1204 exit(1);
1205 }
1206 }
1207
1208 rtnl_close(&rth);
1209
1210 exit(0);
1211 }
1212
1213 static int print_sadinfo(struct nlmsghdr *n, void *arg)
1214 {
1215 FILE *fp = (FILE *)arg;
1216 __u32 *f = NLMSG_DATA(n);
1217 struct rtattr *tb[XFRMA_SAD_MAX+1];
1218 struct rtattr *rta;
1219 __u32 *cnt;
1220
1221 int len = n->nlmsg_len;
1222
1223 len -= NLMSG_LENGTH(sizeof(__u32));
1224 if (len < 0) {
1225 fprintf(stderr, "SADinfo: Wrong len %d\n", len);
1226 return -1;
1227 }
1228
1229 rta = XFRMSAPD_RTA(f);
1230 parse_rtattr(tb, XFRMA_SAD_MAX, rta, len);
1231
1232 if (tb[XFRMA_SAD_CNT]) {
1233 fprintf(fp, "\t SAD");
1234 cnt = (__u32 *)RTA_DATA(tb[XFRMA_SAD_CNT]);
1235 fprintf(fp, " count %d", *cnt);
1236 } else {
1237 fprintf(fp, "BAD SAD info returned\n");
1238 return -1;
1239 }
1240
1241 if (show_stats) {
1242 if (tb[XFRMA_SAD_HINFO]) {
1243 struct xfrmu_sadhinfo *si;
1244
1245 if (RTA_PAYLOAD(tb[XFRMA_SAD_HINFO]) < sizeof(*si)) {
1246 fprintf(fp, "BAD SAD length returned\n");
1247 return -1;
1248 }
1249
1250 si = RTA_DATA(tb[XFRMA_SAD_HINFO]);
1251 fprintf(fp, " (buckets ");
1252 fprintf(fp, "count %d", si->sadhcnt);
1253 fprintf(fp, " Max %d", si->sadhmcnt);
1254 fprintf(fp, ")");
1255 }
1256 }
1257 fprintf(fp, "\n");
1258
1259 return 0;
1260 }
1261
1262 static int xfrm_sad_getinfo(int argc, char **argv)
1263 {
1264 struct rtnl_handle rth;
1265 struct {
1266 struct nlmsghdr n;
1267 __u32 flags;
1268 char ans[64];
1269 } req = {
1270 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.flags)),
1271 .n.nlmsg_flags = NLM_F_REQUEST,
1272 .n.nlmsg_type = XFRM_MSG_GETSADINFO,
1273 .flags = 0XFFFFFFFF,
1274 };
1275
1276 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1277 exit(1);
1278
1279 if (rtnl_talk(&rth, &req.n, &req.n, sizeof(req)) < 0)
1280 exit(2);
1281
1282 print_sadinfo(&req.n, (void *)stdout);
1283
1284 rtnl_close(&rth);
1285
1286 return 0;
1287 }
1288
1289 static int xfrm_state_flush(int argc, char **argv)
1290 {
1291 struct rtnl_handle rth;
1292 struct {
1293 struct nlmsghdr n;
1294 struct xfrm_usersa_flush xsf;
1295 } req = {
1296 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsf)),
1297 .n.nlmsg_flags = NLM_F_REQUEST,
1298 .n.nlmsg_type = XFRM_MSG_FLUSHSA,
1299 };
1300 char *protop = NULL;
1301
1302 while (argc > 0) {
1303 if (strcmp(*argv, "proto") == 0) {
1304 int ret;
1305
1306 if (protop)
1307 duparg("proto", *argv);
1308 protop = *argv;
1309
1310 NEXT_ARG();
1311
1312 ret = xfrm_xfrmproto_getbyname(*argv);
1313 if (ret < 0)
1314 invarg("XFRM-PROTO value is invalid", *argv);
1315
1316 req.xsf.proto = (__u8)ret;
1317 } else
1318 invarg("unknown", *argv);
1319
1320 argc--; argv++;
1321 }
1322
1323 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1324 exit(1);
1325
1326 if (show_stats > 1)
1327 fprintf(stderr, "Flush state with XFRM-PROTO value \"%s\"\n",
1328 strxf_xfrmproto(req.xsf.proto));
1329
1330 if (rtnl_talk(&rth, &req.n, NULL, 0) < 0)
1331 exit(2);
1332
1333 rtnl_close(&rth);
1334
1335 return 0;
1336 }
1337
1338 int do_xfrm_state(int argc, char **argv)
1339 {
1340 if (argc < 1)
1341 return xfrm_state_list_or_deleteall(0, NULL, 0);
1342
1343 if (matches(*argv, "add") == 0)
1344 return xfrm_state_modify(XFRM_MSG_NEWSA, 0,
1345 argc-1, argv+1);
1346 if (matches(*argv, "update") == 0)
1347 return xfrm_state_modify(XFRM_MSG_UPDSA, 0,
1348 argc-1, argv+1);
1349 if (matches(*argv, "allocspi") == 0)
1350 return xfrm_state_allocspi(argc-1, argv+1);
1351 if (matches(*argv, "delete") == 0)
1352 return xfrm_state_get_or_delete(argc-1, argv+1, 1);
1353 if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0)
1354 return xfrm_state_list_or_deleteall(argc-1, argv+1, 1);
1355 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1356 || matches(*argv, "lst") == 0)
1357 return xfrm_state_list_or_deleteall(argc-1, argv+1, 0);
1358 if (matches(*argv, "get") == 0)
1359 return xfrm_state_get_or_delete(argc-1, argv+1, 0);
1360 if (matches(*argv, "flush") == 0)
1361 return xfrm_state_flush(argc-1, argv+1);
1362 if (matches(*argv, "count") == 0) {
1363 return xfrm_sad_getinfo(argc, argv);
1364 }
1365 if (matches(*argv, "help") == 0)
1366 usage();
1367 fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv);
1368 exit(-1);
1369 }
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