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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,
58 "Usage: ip xfrm state { add | update } ID [ ALGO-LIST ] [ mode MODE ]\n"
59 " [ mark MARK [ mask MASK ] ] [ reqid REQID ] [ seq SEQ ]\n"
60 " [ replay-window SIZE ] [ replay-seq SEQ ] [ replay-oseq SEQ ]\n"
61 " [ replay-seq-hi SEQ ] [ replay-oseq-hi SEQ ]\n"
62 " [ flag FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ] [ encap ENCAP ]\n"
63 " [ coa ADDR[/PLEN] ] [ ctx CTX ] [ extra-flag EXTRA-FLAG-LIST ]\n"
64 " [ offload [dev DEV] dir DIR ]\n"
65 " [ output-mark OUTPUT-MARK [ mask MASK ] ]\n"
66 " [ if_id IF_ID ]\n"
67 "Usage: ip xfrm state allocspi ID [ mode MODE ] [ mark MARK [ mask MASK ] ]\n"
68 " [ reqid REQID ] [ seq SEQ ] [ min SPI max SPI ]\n"
69 "Usage: ip xfrm state { delete | get } ID [ mark MARK [ mask MASK ] ]\n"
70 "Usage: ip xfrm state deleteall [ ID ] [ mode MODE ] [ reqid REQID ]\n"
71 " [ flag FLAG-LIST ]\n"
72 "Usage: ip xfrm state list [ nokeys ] [ ID ] [ mode MODE ] [ reqid REQID ]\n"
73 " [ flag FLAG-LIST ]\n"
74 "Usage: ip xfrm state flush [ proto XFRM-PROTO ]\n"
75 "Usage: ip xfrm state count\n"
76 "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM-PROTO ] [ spi SPI ]\n"
77 "XFRM-PROTO := ");
78 fprintf(stderr,
79 "%s | %s | %s | %s | %s\n",
80 strxf_xfrmproto(IPPROTO_ESP),
81 strxf_xfrmproto(IPPROTO_AH),
82 strxf_xfrmproto(IPPROTO_COMP),
83 strxf_xfrmproto(IPPROTO_ROUTING),
84 strxf_xfrmproto(IPPROTO_DSTOPTS));
85 fprintf(stderr,
86 "ALGO-LIST := [ ALGO-LIST ] ALGO\n"
87 "ALGO := { ");
88 fprintf(stderr,
89 "%s | %s",
90 strxf_algotype(XFRMA_ALG_CRYPT),
91 strxf_algotype(XFRMA_ALG_AUTH));
92 fprintf(stderr,
93 " } ALGO-NAME ALGO-KEYMAT |\n"
94 " %s", strxf_algotype(XFRMA_ALG_AUTH_TRUNC));
95 fprintf(stderr,
96 " ALGO-NAME ALGO-KEYMAT ALGO-TRUNC-LEN |\n"
97 " %s", strxf_algotype(XFRMA_ALG_AEAD));
98 fprintf(stderr,
99 " ALGO-NAME ALGO-KEYMAT ALGO-ICV-LEN |\n"
100 " %s", strxf_algotype(XFRMA_ALG_COMP));
101 fprintf(stderr,
102 " ALGO-NAME\n"
103 "MODE := transport | tunnel | beet | ro | in_trigger\n"
104 "FLAG-LIST := [ FLAG-LIST ] FLAG\n"
105 "FLAG := noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec | align4 | esn\n"
106 "EXTRA-FLAG-LIST := [ EXTRA-FLAG-LIST ] EXTRA-FLAG\n"
107 "EXTRA-FLAG := dont-encap-dscp | oseq-may-wrap\n"
108 "SELECTOR := [ src ADDR[/PLEN] ] [ dst ADDR[/PLEN] ] [ dev DEV ] [ UPSPEC ]\n"
109 "UPSPEC := proto { { tcp | udp | sctp | dccp } [ sport PORT ] [ dport PORT ] |\n"
110 " { icmp | ipv6-icmp | mobility-header } [ type NUMBER ] [ code NUMBER ] |\n"
111 " gre [ key { DOTTED-QUAD | NUMBER } ] | PROTO }\n"
112 "LIMIT-LIST := [ LIMIT-LIST ] limit LIMIT\n"
113 "LIMIT := { time-soft | time-hard | time-use-soft | time-use-hard } SECONDS |\n"
114 " { byte-soft | byte-hard } SIZE | { packet-soft | packet-hard } COUNT\n"
115 "ENCAP := { espinudp | espinudp-nonike | espintcp } SPORT DPORT OADDR\n"
116 "DIR := in | out\n");
117
118 exit(-1);
119 }
120
121 static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
122 char *name, char *key, char *buf, int max)
123 {
124 int len;
125 int slen = strlen(key);
126
127 #if 0
128 /* XXX: verifying both name and key is required! */
129 fprintf(stderr, "warning: ALGO-NAME/ALGO-KEYMAT values will be sent to the kernel promiscuously! (verifying them isn't implemented yet)\n");
130 #endif
131
132 strlcpy(alg->alg_name, name, sizeof(alg->alg_name));
133
134 if (slen > 2 && strncmp(key, "0x", 2) == 0) {
135 /* split two chars "0x" from the top */
136 char *p = key + 2;
137 int plen = slen - 2;
138 int i;
139 int j;
140
141 /* Converting hexadecimal numbered string into real key;
142 * Convert each two chars into one char(value). If number
143 * of the length is odd, add zero on the top for rounding.
144 */
145
146 /* calculate length of the converted values(real key) */
147 len = (plen + 1) / 2;
148 if (len > max)
149 invarg("ALGO-KEYMAT value makes buffer overflow\n", key);
150
151 for (i = -(plen % 2), j = 0; j < len; i += 2, j++) {
152 char vbuf[3];
153 __u8 val;
154
155 vbuf[0] = i >= 0 ? p[i] : '0';
156 vbuf[1] = p[i + 1];
157 vbuf[2] = '\0';
158
159 if (get_u8(&val, vbuf, 16))
160 invarg("ALGO-KEYMAT value is invalid", key);
161
162 buf[j] = val;
163 }
164 } else {
165 len = slen;
166 if (len > 0) {
167 if (len > max)
168 invarg("ALGO-KEYMAT value makes buffer overflow\n", key);
169
170 memcpy(buf, key, len);
171 }
172 }
173
174 alg->alg_key_len = len * 8;
175
176 return 0;
177 }
178
179 static int xfrm_seq_parse(__u32 *seq, int *argcp, char ***argvp)
180 {
181 int argc = *argcp;
182 char **argv = *argvp;
183
184 if (get_be32(seq, *argv, 0))
185 invarg("SEQ value is invalid", *argv);
186
187 *argcp = argc;
188 *argvp = argv;
189
190 return 0;
191 }
192
193 static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp)
194 {
195 int argc = *argcp;
196 char **argv = *argvp;
197 int len = strlen(*argv);
198
199 if (len > 2 && strncmp(*argv, "0x", 2) == 0) {
200 __u8 val = 0;
201
202 if (get_u8(&val, *argv, 16))
203 invarg("FLAG value is invalid", *argv);
204 *flags = val;
205 } else {
206 while (1) {
207 if (strcmp(*argv, "noecn") == 0)
208 *flags |= XFRM_STATE_NOECN;
209 else if (strcmp(*argv, "decap-dscp") == 0)
210 *flags |= XFRM_STATE_DECAP_DSCP;
211 else if (strcmp(*argv, "nopmtudisc") == 0)
212 *flags |= XFRM_STATE_NOPMTUDISC;
213 else if (strcmp(*argv, "wildrecv") == 0)
214 *flags |= XFRM_STATE_WILDRECV;
215 else if (strcmp(*argv, "icmp") == 0)
216 *flags |= XFRM_STATE_ICMP;
217 else if (strcmp(*argv, "af-unspec") == 0)
218 *flags |= XFRM_STATE_AF_UNSPEC;
219 else if (strcmp(*argv, "align4") == 0)
220 *flags |= XFRM_STATE_ALIGN4;
221 else if (strcmp(*argv, "esn") == 0)
222 *flags |= XFRM_STATE_ESN;
223 else {
224 PREV_ARG(); /* back track */
225 break;
226 }
227
228 if (!NEXT_ARG_OK())
229 break;
230 NEXT_ARG();
231 }
232 }
233
234 *argcp = argc;
235 *argvp = argv;
236
237 return 0;
238 }
239
240 static int xfrm_state_extra_flag_parse(__u32 *extra_flags, int *argcp, char ***argvp)
241 {
242 int argc = *argcp;
243 char **argv = *argvp;
244 int len = strlen(*argv);
245
246 if (len > 2 && strncmp(*argv, "0x", 2) == 0) {
247 __u32 val = 0;
248
249 if (get_u32(&val, *argv, 16))
250 invarg("\"EXTRA-FLAG\" is invalid", *argv);
251 *extra_flags = val;
252 } else {
253 while (1) {
254 if (strcmp(*argv, "dont-encap-dscp") == 0)
255 *extra_flags |= XFRM_SA_XFLAG_DONT_ENCAP_DSCP;
256 else if (strcmp(*argv, "oseq-may-wrap") == 0)
257 *extra_flags |= XFRM_SA_XFLAG_OSEQ_MAY_WRAP;
258 else {
259 PREV_ARG(); /* back track */
260 break;
261 }
262
263 if (!NEXT_ARG_OK())
264 break;
265 NEXT_ARG();
266 }
267 }
268
269 *argcp = argc;
270 *argvp = argv;
271
272 return 0;
273 }
274
275 static int xfrm_offload_dir_parse(__u8 *dir, int *argcp, char ***argvp)
276 {
277 int argc = *argcp;
278 char **argv = *argvp;
279
280 if (strcmp(*argv, "in") == 0)
281 *dir = XFRM_OFFLOAD_INBOUND;
282 else if (strcmp(*argv, "out") == 0)
283 *dir = 0;
284 else
285 invarg("DIR value is invalid", *argv);
286
287 *argcp = argc;
288 *argvp = argv;
289
290 return 0;
291 }
292
293 static int xfrm_state_modify(int cmd, unsigned int flags, int argc, char **argv)
294 {
295 struct rtnl_handle rth;
296 struct {
297 struct nlmsghdr n;
298 struct xfrm_usersa_info xsinfo;
299 char buf[RTA_BUF_SIZE];
300 } req = {
301 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsinfo)),
302 .n.nlmsg_flags = NLM_F_REQUEST | flags,
303 .n.nlmsg_type = cmd,
304 .xsinfo.family = preferred_family,
305 .xsinfo.lft.soft_byte_limit = XFRM_INF,
306 .xsinfo.lft.hard_byte_limit = XFRM_INF,
307 .xsinfo.lft.soft_packet_limit = XFRM_INF,
308 .xsinfo.lft.hard_packet_limit = XFRM_INF,
309 };
310 struct xfrm_replay_state replay = {};
311 struct xfrm_replay_state_esn replay_esn = {};
312 struct xfrm_user_offload xuo = {};
313 unsigned int ifindex = 0;
314 __u8 dir = 0;
315 bool is_offload = false;
316 __u32 replay_window = 0;
317 __u32 seq = 0, oseq = 0, seq_hi = 0, oseq_hi = 0;
318 char *idp = NULL;
319 char *aeadop = NULL;
320 char *ealgop = NULL;
321 char *aalgop = NULL;
322 char *calgop = NULL;
323 char *coap = NULL;
324 char *sctxp = NULL;
325 __u32 extra_flags = 0;
326 struct xfrm_mark mark = {0, 0};
327 struct {
328 struct xfrm_user_sec_ctx sctx;
329 char str[CTX_BUF_SIZE];
330 } ctx = {};
331 struct xfrm_mark output_mark = {0, 0};
332 bool is_if_id_set = false;
333 __u32 if_id = 0;
334
335 while (argc > 0) {
336 if (strcmp(*argv, "mode") == 0) {
337 NEXT_ARG();
338 xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv);
339 } else if (strcmp(*argv, "mark") == 0) {
340 xfrm_parse_mark(&mark, &argc, &argv);
341 } else if (strcmp(*argv, "reqid") == 0) {
342 NEXT_ARG();
343 xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv);
344 } else if (strcmp(*argv, "seq") == 0) {
345 NEXT_ARG();
346 xfrm_seq_parse(&req.xsinfo.seq, &argc, &argv);
347 } else if (strcmp(*argv, "replay-window") == 0) {
348 NEXT_ARG();
349 if (get_u32(&replay_window, *argv, 0))
350 invarg("value after \"replay-window\" is invalid", *argv);
351 } else if (strcmp(*argv, "replay-seq") == 0) {
352 NEXT_ARG();
353 if (get_u32(&seq, *argv, 0))
354 invarg("value after \"replay-seq\" is invalid", *argv);
355 } else if (strcmp(*argv, "replay-seq-hi") == 0) {
356 NEXT_ARG();
357 if (get_u32(&seq_hi, *argv, 0))
358 invarg("value after \"replay-seq-hi\" is invalid", *argv);
359 } else if (strcmp(*argv, "replay-oseq") == 0) {
360 NEXT_ARG();
361 if (get_u32(&oseq, *argv, 0))
362 invarg("value after \"replay-oseq\" is invalid", *argv);
363 } else if (strcmp(*argv, "replay-oseq-hi") == 0) {
364 NEXT_ARG();
365 if (get_u32(&oseq_hi, *argv, 0))
366 invarg("value after \"replay-oseq-hi\" is invalid", *argv);
367 } else if (strcmp(*argv, "flag") == 0) {
368 NEXT_ARG();
369 xfrm_state_flag_parse(&req.xsinfo.flags, &argc, &argv);
370 } else if (strcmp(*argv, "extra-flag") == 0) {
371 NEXT_ARG();
372 xfrm_state_extra_flag_parse(&extra_flags, &argc, &argv);
373 } else if (strcmp(*argv, "sel") == 0) {
374 NEXT_ARG();
375 preferred_family = AF_UNSPEC;
376 xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv);
377 preferred_family = req.xsinfo.sel.family;
378 } else if (strcmp(*argv, "limit") == 0) {
379 NEXT_ARG();
380 xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv);
381 } else if (strcmp(*argv, "encap") == 0) {
382 struct xfrm_encap_tmpl encap;
383 inet_prefix oa;
384 NEXT_ARG();
385 xfrm_encap_type_parse(&encap.encap_type, &argc, &argv);
386 NEXT_ARG();
387 if (get_be16(&encap.encap_sport, *argv, 0))
388 invarg("SPORT value after \"encap\" is invalid", *argv);
389 NEXT_ARG();
390 if (get_be16(&encap.encap_dport, *argv, 0))
391 invarg("DPORT value after \"encap\" is invalid", *argv);
392 NEXT_ARG();
393 get_addr(&oa, *argv, AF_UNSPEC);
394 memcpy(&encap.encap_oa, &oa.data, sizeof(encap.encap_oa));
395 addattr_l(&req.n, sizeof(req.buf), XFRMA_ENCAP,
396 (void *)&encap, sizeof(encap));
397 } else if (strcmp(*argv, "coa") == 0) {
398 inet_prefix coa;
399 xfrm_address_t xcoa = {};
400
401 if (coap)
402 duparg("coa", *argv);
403 coap = *argv;
404
405 NEXT_ARG();
406
407 get_prefix(&coa, *argv, preferred_family);
408 if (coa.family == AF_UNSPEC)
409 invarg("value after \"coa\" has an unrecognized address family", *argv);
410 if (coa.bytelen > sizeof(xcoa))
411 invarg("value after \"coa\" is too large", *argv);
412
413 memcpy(&xcoa, &coa.data, coa.bytelen);
414
415 addattr_l(&req.n, sizeof(req.buf), XFRMA_COADDR,
416 (void *)&xcoa, sizeof(xcoa));
417 } else if (strcmp(*argv, "ctx") == 0) {
418 char *context;
419
420 if (sctxp)
421 duparg("ctx", *argv);
422 sctxp = *argv;
423
424 NEXT_ARG();
425 context = *argv;
426
427 xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
428 addattr_l(&req.n, sizeof(req.buf), XFRMA_SEC_CTX,
429 (void *)&ctx, ctx.sctx.len);
430 } else if (strcmp(*argv, "offload") == 0) {
431 is_offload = true;
432 NEXT_ARG();
433 if (strcmp(*argv, "dev") == 0) {
434 NEXT_ARG();
435 ifindex = ll_name_to_index(*argv);
436 if (!ifindex) {
437 invarg("value after \"offload dev\" is invalid", *argv);
438 is_offload = false;
439 }
440 NEXT_ARG();
441 }
442 if (strcmp(*argv, "dir") == 0) {
443 NEXT_ARG();
444 xfrm_offload_dir_parse(&dir, &argc, &argv);
445 } else {
446 invarg("value after \"offload dir\" is invalid", *argv);
447 is_offload = false;
448 }
449 } else if (strcmp(*argv, "output-mark") == 0) {
450 NEXT_ARG();
451 if (get_u32(&output_mark.v, *argv, 0))
452 invarg("value after \"output-mark\" is invalid", *argv);
453 if (argc > 1) {
454 NEXT_ARG();
455 if (strcmp(*argv, "mask") == 0) {
456 NEXT_ARG();
457 if (get_u32(&output_mark.m, *argv, 0))
458 invarg("mask value is invalid\n", *argv);
459 } else {
460 PREV_ARG();
461 }
462 }
463 } else if (strcmp(*argv, "if_id") == 0) {
464 NEXT_ARG();
465 if (get_u32(&if_id, *argv, 0))
466 invarg("value after \"if_id\" is invalid", *argv);
467 is_if_id_set = true;
468 } else {
469 /* try to assume ALGO */
470 int type = xfrm_algotype_getbyname(*argv);
471
472 switch (type) {
473 case XFRMA_ALG_AEAD:
474 case XFRMA_ALG_CRYPT:
475 case XFRMA_ALG_AUTH:
476 case XFRMA_ALG_AUTH_TRUNC:
477 case XFRMA_ALG_COMP:
478 {
479 /* ALGO */
480 struct {
481 union {
482 struct xfrm_algo alg;
483 struct xfrm_algo_aead aead;
484 struct xfrm_algo_auth auth;
485 } u;
486 char buf[XFRM_ALGO_KEY_BUF_SIZE];
487 } alg = {};
488 int len;
489 __u32 icvlen, trunclen;
490 char *name;
491 char *key = "";
492 char *buf;
493
494 switch (type) {
495 case XFRMA_ALG_AEAD:
496 if (ealgop || aalgop || aeadop)
497 duparg("ALGO-TYPE", *argv);
498 aeadop = *argv;
499 break;
500 case XFRMA_ALG_CRYPT:
501 if (ealgop || aeadop)
502 duparg("ALGO-TYPE", *argv);
503 ealgop = *argv;
504 break;
505 case XFRMA_ALG_AUTH:
506 case XFRMA_ALG_AUTH_TRUNC:
507 if (aalgop || aeadop)
508 duparg("ALGO-TYPE", *argv);
509 aalgop = *argv;
510 break;
511 case XFRMA_ALG_COMP:
512 if (calgop)
513 duparg("ALGO-TYPE", *argv);
514 calgop = *argv;
515 break;
516 default:
517 /* not reached */
518 invarg("ALGO-TYPE value is invalid\n", *argv);
519 }
520
521 if (!NEXT_ARG_OK())
522 missarg("ALGO-NAME");
523 NEXT_ARG();
524 name = *argv;
525
526 switch (type) {
527 case XFRMA_ALG_AEAD:
528 case XFRMA_ALG_CRYPT:
529 case XFRMA_ALG_AUTH:
530 case XFRMA_ALG_AUTH_TRUNC:
531 if (!NEXT_ARG_OK())
532 missarg("ALGO-KEYMAT");
533 NEXT_ARG();
534 key = *argv;
535 break;
536 }
537
538 buf = alg.u.alg.alg_key;
539 len = sizeof(alg.u.alg);
540
541 switch (type) {
542 case XFRMA_ALG_AEAD:
543 if (!NEXT_ARG_OK())
544 missarg("ALGO-ICV-LEN");
545 NEXT_ARG();
546 if (get_u32(&icvlen, *argv, 0))
547 invarg("ALGO-ICV-LEN value is invalid",
548 *argv);
549 alg.u.aead.alg_icv_len = icvlen;
550
551 buf = alg.u.aead.alg_key;
552 len = sizeof(alg.u.aead);
553 break;
554 case XFRMA_ALG_AUTH_TRUNC:
555 if (!NEXT_ARG_OK())
556 missarg("ALGO-TRUNC-LEN");
557 NEXT_ARG();
558 if (get_u32(&trunclen, *argv, 0))
559 invarg("ALGO-TRUNC-LEN value is invalid",
560 *argv);
561 alg.u.auth.alg_trunc_len = trunclen;
562
563 buf = alg.u.auth.alg_key;
564 len = sizeof(alg.u.auth);
565 break;
566 }
567
568 xfrm_algo_parse((void *)&alg, type, name, key,
569 buf, sizeof(alg.buf));
570 len += alg.u.alg.alg_key_len / 8;
571
572 addattr_l(&req.n, sizeof(req.buf), type,
573 (void *)&alg, len);
574 break;
575 }
576 default:
577 /* try to assume ID */
578 if (idp)
579 invarg("unknown", *argv);
580 idp = *argv;
581
582 /* ID */
583 xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id,
584 &req.xsinfo.family, 0, &argc, &argv);
585 if (preferred_family == AF_UNSPEC)
586 preferred_family = req.xsinfo.family;
587 }
588 }
589 argc--; argv++;
590 }
591
592 if (req.xsinfo.flags & XFRM_STATE_ESN &&
593 replay_window == 0) {
594 fprintf(stderr, "Error: esn flag set without replay-window.\n");
595 exit(-1);
596 }
597
598 if (replay_window > XFRMA_REPLAY_ESN_MAX) {
599 fprintf(stderr,
600 "Error: replay-window (%u) > XFRMA_REPLAY_ESN_MAX (%u).\n",
601 replay_window, XFRMA_REPLAY_ESN_MAX);
602 exit(-1);
603 }
604
605 if (is_offload) {
606 xuo.ifindex = ifindex;
607 xuo.flags = dir;
608 addattr_l(&req.n, sizeof(req.buf), XFRMA_OFFLOAD_DEV, &xuo,
609 sizeof(xuo));
610 }
611 if (req.xsinfo.flags & XFRM_STATE_ESN ||
612 replay_window > (sizeof(replay.bitmap) * 8)) {
613 replay_esn.seq = seq;
614 replay_esn.oseq = oseq;
615 replay_esn.seq_hi = seq_hi;
616 replay_esn.oseq_hi = oseq_hi;
617 replay_esn.replay_window = replay_window;
618 replay_esn.bmp_len = (replay_window + sizeof(__u32) * 8 - 1) /
619 (sizeof(__u32) * 8);
620 addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_ESN_VAL,
621 &replay_esn, sizeof(replay_esn));
622 } else {
623 if (seq || oseq) {
624 replay.seq = seq;
625 replay.oseq = oseq;
626 addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_VAL,
627 &replay, sizeof(replay));
628 }
629 req.xsinfo.replay_window = replay_window;
630 }
631
632 if (extra_flags)
633 addattr32(&req.n, sizeof(req.buf), XFRMA_SA_EXTRA_FLAGS,
634 extra_flags);
635
636 if (!idp) {
637 fprintf(stderr, "Not enough information: ID is required\n");
638 exit(1);
639 }
640
641 if (mark.m) {
642 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
643 (void *)&mark, sizeof(mark));
644 if (r < 0) {
645 fprintf(stderr, "XFRMA_MARK failed\n");
646 exit(1);
647 }
648 }
649
650 if (is_if_id_set)
651 addattr32(&req.n, sizeof(req.buf), XFRMA_IF_ID, if_id);
652
653 if (xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
654 switch (req.xsinfo.mode) {
655 case XFRM_MODE_TRANSPORT:
656 case XFRM_MODE_TUNNEL:
657 break;
658 case XFRM_MODE_BEET:
659 if (req.xsinfo.id.proto == IPPROTO_ESP)
660 break;
661 default:
662 fprintf(stderr, "MODE value is invalid with XFRM-PROTO value \"%s\"\n",
663 strxf_xfrmproto(req.xsinfo.id.proto));
664 exit(1);
665 }
666
667 switch (req.xsinfo.id.proto) {
668 case IPPROTO_ESP:
669 if (calgop) {
670 fprintf(stderr, "ALGO-TYPE value \"%s\" is invalid with XFRM-PROTO value \"%s\"\n",
671 strxf_algotype(XFRMA_ALG_COMP),
672 strxf_xfrmproto(req.xsinfo.id.proto));
673 exit(1);
674 }
675 if (!ealgop && !aeadop) {
676 fprintf(stderr, "ALGO-TYPE value \"%s\" or \"%s\" is required with XFRM-PROTO value \"%s\"\n",
677 strxf_algotype(XFRMA_ALG_CRYPT),
678 strxf_algotype(XFRMA_ALG_AEAD),
679 strxf_xfrmproto(req.xsinfo.id.proto));
680 exit(1);
681 }
682 break;
683 case IPPROTO_AH:
684 if (ealgop || aeadop || calgop) {
685 fprintf(stderr, "ALGO-TYPE values \"%s\", \"%s\", and \"%s\" are invalid with XFRM-PROTO value \"%s\"\n",
686 strxf_algotype(XFRMA_ALG_CRYPT),
687 strxf_algotype(XFRMA_ALG_AEAD),
688 strxf_algotype(XFRMA_ALG_COMP),
689 strxf_xfrmproto(req.xsinfo.id.proto));
690 exit(1);
691 }
692 if (!aalgop) {
693 fprintf(stderr, "ALGO-TYPE value \"%s\" or \"%s\" is required with XFRM-PROTO value \"%s\"\n",
694 strxf_algotype(XFRMA_ALG_AUTH),
695 strxf_algotype(XFRMA_ALG_AUTH_TRUNC),
696 strxf_xfrmproto(req.xsinfo.id.proto));
697 exit(1);
698 }
699 break;
700 case IPPROTO_COMP:
701 if (ealgop || aalgop || aeadop) {
702 fprintf(stderr, "ALGO-TYPE values \"%s\", \"%s\", \"%s\", and \"%s\" are invalid with XFRM-PROTO value \"%s\"\n",
703 strxf_algotype(XFRMA_ALG_CRYPT),
704 strxf_algotype(XFRMA_ALG_AUTH),
705 strxf_algotype(XFRMA_ALG_AUTH_TRUNC),
706 strxf_algotype(XFRMA_ALG_AEAD),
707 strxf_xfrmproto(req.xsinfo.id.proto));
708 exit(1);
709 }
710 if (!calgop) {
711 fprintf(stderr, "ALGO-TYPE value \"%s\" is required with XFRM-PROTO value \"%s\"\n",
712 strxf_algotype(XFRMA_ALG_COMP),
713 strxf_xfrmproto(req.xsinfo.id.proto));
714 exit(1);
715 }
716 break;
717 }
718 } else {
719 if (ealgop || aalgop || aeadop || calgop) {
720 fprintf(stderr, "ALGO is invalid with XFRM-PROTO value \"%s\"\n",
721 strxf_xfrmproto(req.xsinfo.id.proto));
722 exit(1);
723 }
724 }
725
726 if (xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
727 switch (req.xsinfo.mode) {
728 case XFRM_MODE_ROUTEOPTIMIZATION:
729 case XFRM_MODE_IN_TRIGGER:
730 break;
731 case 0:
732 fprintf(stderr, "\"mode\" is required with XFRM-PROTO value \"%s\"\n",
733 strxf_xfrmproto(req.xsinfo.id.proto));
734 exit(1);
735 default:
736 fprintf(stderr, "MODE value is invalid with XFRM-PROTO value \"%s\"\n",
737 strxf_xfrmproto(req.xsinfo.id.proto));
738 exit(1);
739 }
740
741 if (!coap) {
742 fprintf(stderr, "\"coa\" is required with XFRM-PROTO value \"%s\"\n",
743 strxf_xfrmproto(req.xsinfo.id.proto));
744 exit(1);
745 }
746 } else {
747 if (coap) {
748 fprintf(stderr, "\"coa\" is invalid with XFRM-PROTO value \"%s\"\n",
749 strxf_xfrmproto(req.xsinfo.id.proto));
750 exit(1);
751 }
752 }
753
754 if (output_mark.v)
755 addattr32(&req.n, sizeof(req.buf), XFRMA_OUTPUT_MARK, output_mark.v);
756
757 if (output_mark.m)
758 addattr32(&req.n, sizeof(req.buf), XFRMA_SET_MARK_MASK, output_mark.m);
759
760 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
761 exit(1);
762
763 if (req.xsinfo.family == AF_UNSPEC)
764 req.xsinfo.family = AF_INET;
765
766 if (rtnl_talk(&rth, &req.n, NULL) < 0)
767 exit(2);
768
769 rtnl_close(&rth);
770
771 return 0;
772 }
773
774 static int xfrm_state_allocspi(int argc, char **argv)
775 {
776 struct rtnl_handle rth;
777 struct {
778 struct nlmsghdr n;
779 struct xfrm_userspi_info xspi;
780 char buf[RTA_BUF_SIZE];
781 } req = {
782 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xspi)),
783 .n.nlmsg_flags = NLM_F_REQUEST,
784 .n.nlmsg_type = XFRM_MSG_ALLOCSPI,
785 .xspi.info.family = preferred_family,
786 #if 0
787 .xspi.lft.soft_byte_limit = XFRM_INF,
788 .xspi.lft.hard_byte_limit = XFRM_INF,
789 .xspi.lft.soft_packet_limit = XFRM_INF,
790 .xspi.lft.hard_packet_limit = XFRM_INF,
791 #endif
792 };
793 char *idp = NULL;
794 char *minp = NULL;
795 char *maxp = NULL;
796 struct xfrm_mark mark = {0, 0};
797 struct nlmsghdr *answer;
798
799 while (argc > 0) {
800 if (strcmp(*argv, "mode") == 0) {
801 NEXT_ARG();
802 xfrm_mode_parse(&req.xspi.info.mode, &argc, &argv);
803 } else if (strcmp(*argv, "mark") == 0) {
804 xfrm_parse_mark(&mark, &argc, &argv);
805 } else if (strcmp(*argv, "reqid") == 0) {
806 NEXT_ARG();
807 xfrm_reqid_parse(&req.xspi.info.reqid, &argc, &argv);
808 } else if (strcmp(*argv, "seq") == 0) {
809 NEXT_ARG();
810 xfrm_seq_parse(&req.xspi.info.seq, &argc, &argv);
811 } else if (strcmp(*argv, "min") == 0) {
812 if (minp)
813 duparg("min", *argv);
814 minp = *argv;
815
816 NEXT_ARG();
817
818 if (get_u32(&req.xspi.min, *argv, 0))
819 invarg("value after \"min\" is invalid", *argv);
820 } else if (strcmp(*argv, "max") == 0) {
821 if (maxp)
822 duparg("max", *argv);
823 maxp = *argv;
824
825 NEXT_ARG();
826
827 if (get_u32(&req.xspi.max, *argv, 0))
828 invarg("value after \"max\" is invalid", *argv);
829 } else {
830 /* try to assume ID */
831 if (idp)
832 invarg("unknown", *argv);
833 idp = *argv;
834
835 /* ID */
836 xfrm_id_parse(&req.xspi.info.saddr, &req.xspi.info.id,
837 &req.xspi.info.family, 0, &argc, &argv);
838 if (req.xspi.info.id.spi) {
839 fprintf(stderr, "\"spi\" is invalid\n");
840 exit(1);
841 }
842 if (preferred_family == AF_UNSPEC)
843 preferred_family = req.xspi.info.family;
844 }
845 argc--; argv++;
846 }
847
848 if (!idp) {
849 fprintf(stderr, "Not enough information: ID is required\n");
850 exit(1);
851 }
852
853 if (minp) {
854 if (!maxp) {
855 fprintf(stderr, "\"max\" is missing\n");
856 exit(1);
857 }
858 if (req.xspi.min > req.xspi.max) {
859 fprintf(stderr, "value after \"min\" is larger than value after \"max\"\n");
860 exit(1);
861 }
862 } else {
863 if (maxp) {
864 fprintf(stderr, "\"min\" is missing\n");
865 exit(1);
866 }
867
868 /* XXX: Default value defined in PF_KEY;
869 * See kernel's net/key/af_key.c(pfkey_getspi).
870 */
871 req.xspi.min = 0x100;
872 req.xspi.max = 0x0fffffff;
873
874 /* XXX: IPCOMP spi is 16-bits;
875 * See kernel's net/xfrm/xfrm_user(verify_userspi_info).
876 */
877 if (req.xspi.info.id.proto == IPPROTO_COMP)
878 req.xspi.max = 0xffff;
879 }
880
881 if (mark.m & mark.v) {
882 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
883 (void *)&mark, sizeof(mark));
884 if (r < 0) {
885 fprintf(stderr, "XFRMA_MARK failed\n");
886 exit(1);
887 }
888 }
889
890 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
891 exit(1);
892
893 if (req.xspi.info.family == AF_UNSPEC)
894 req.xspi.info.family = AF_INET;
895
896
897 if (rtnl_talk(&rth, &req.n, &answer) < 0)
898 exit(2);
899
900 if (xfrm_state_print(answer, (void *)stdout) < 0) {
901 fprintf(stderr, "An error :-)\n");
902 exit(1);
903 }
904
905 free(answer);
906 rtnl_close(&rth);
907
908 return 0;
909 }
910
911 static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo)
912 {
913 if (!filter.use)
914 return 1;
915
916 if (filter.xsinfo.family != AF_UNSPEC &&
917 filter.xsinfo.family != xsinfo->family)
918 return 0;
919
920 if (filter.id_src_mask)
921 if (xfrm_addr_match(&xsinfo->saddr, &filter.xsinfo.saddr,
922 filter.id_src_mask))
923 return 0;
924 if (filter.id_dst_mask)
925 if (xfrm_addr_match(&xsinfo->id.daddr, &filter.xsinfo.id.daddr,
926 filter.id_dst_mask))
927 return 0;
928 if ((xsinfo->id.proto^filter.xsinfo.id.proto)&filter.id_proto_mask)
929 return 0;
930 if ((xsinfo->id.spi^filter.xsinfo.id.spi)&filter.id_spi_mask)
931 return 0;
932 if ((xsinfo->mode^filter.xsinfo.mode)&filter.mode_mask)
933 return 0;
934 if ((xsinfo->reqid^filter.xsinfo.reqid)&filter.reqid_mask)
935 return 0;
936 if (filter.state_flags_mask)
937 if ((xsinfo->flags & filter.xsinfo.flags) == 0)
938 return 0;
939
940 return 1;
941 }
942
943 static int __do_xfrm_state_print(struct nlmsghdr *n, void *arg, bool nokeys)
944 {
945 FILE *fp = (FILE *)arg;
946 struct rtattr *tb[XFRMA_MAX+1];
947 struct rtattr *rta;
948 struct xfrm_usersa_info *xsinfo = NULL;
949 struct xfrm_user_expire *xexp = NULL;
950 struct xfrm_usersa_id *xsid = NULL;
951 int len = n->nlmsg_len;
952
953 if (n->nlmsg_type != XFRM_MSG_NEWSA &&
954 n->nlmsg_type != XFRM_MSG_DELSA &&
955 n->nlmsg_type != XFRM_MSG_UPDSA &&
956 n->nlmsg_type != XFRM_MSG_EXPIRE) {
957 fprintf(stderr, "Not a state: %08x %08x %08x\n",
958 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
959 return 0;
960 }
961
962 if (n->nlmsg_type == XFRM_MSG_DELSA) {
963 /* Don't blame me for this .. Herbert made me do it */
964 xsid = NLMSG_DATA(n);
965 len -= NLMSG_SPACE(sizeof(*xsid));
966 } else if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
967 xexp = NLMSG_DATA(n);
968 xsinfo = &xexp->state;
969 len -= NLMSG_SPACE(sizeof(*xexp));
970 } else {
971 xexp = NULL;
972 xsinfo = NLMSG_DATA(n);
973 len -= NLMSG_SPACE(sizeof(*xsinfo));
974 }
975
976 if (len < 0) {
977 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
978 return -1;
979 }
980
981 if (xsinfo && !xfrm_state_filter_match(xsinfo))
982 return 0;
983
984 if (n->nlmsg_type == XFRM_MSG_DELSA)
985 fprintf(fp, "Deleted ");
986 else if (n->nlmsg_type == XFRM_MSG_UPDSA)
987 fprintf(fp, "Updated ");
988 else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
989 fprintf(fp, "Expired ");
990
991 if (n->nlmsg_type == XFRM_MSG_DELSA)
992 rta = XFRMSID_RTA(xsid);
993 else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
994 rta = XFRMEXP_RTA(xexp);
995 else
996 rta = XFRMS_RTA(xsinfo);
997
998 parse_rtattr(tb, XFRMA_MAX, rta, len);
999
1000 if (n->nlmsg_type == XFRM_MSG_DELSA) {
1001 /* xfrm_policy_id_print(); */
1002
1003 if (!tb[XFRMA_SA]) {
1004 fprintf(stderr, "Buggy XFRM_MSG_DELSA: no XFRMA_SA\n");
1005 return -1;
1006 }
1007 if (RTA_PAYLOAD(tb[XFRMA_SA]) < sizeof(*xsinfo)) {
1008 fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n");
1009 return -1;
1010 }
1011 xsinfo = RTA_DATA(tb[XFRMA_SA]);
1012 }
1013
1014 xfrm_state_info_print(xsinfo, tb, fp, NULL, NULL, nokeys);
1015
1016 if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
1017 fprintf(fp, "\t");
1018 fprintf(fp, "hard %u", xexp->hard);
1019 fprintf(fp, "%s", _SL_);
1020 }
1021
1022 if (oneline)
1023 fprintf(fp, "\n");
1024 fflush(fp);
1025
1026 return 0;
1027 }
1028
1029 int xfrm_state_print(struct nlmsghdr *n, void *arg)
1030 {
1031 return __do_xfrm_state_print(n, arg, false);
1032 }
1033
1034 int xfrm_state_print_nokeys(struct nlmsghdr *n, void *arg)
1035 {
1036 return __do_xfrm_state_print(n, arg, true);
1037 }
1038
1039 static int xfrm_state_get_or_delete(int argc, char **argv, int delete)
1040 {
1041 struct rtnl_handle rth;
1042 struct {
1043 struct nlmsghdr n;
1044 struct xfrm_usersa_id xsid;
1045 char buf[RTA_BUF_SIZE];
1046 } req = {
1047 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsid)),
1048 .n.nlmsg_flags = NLM_F_REQUEST,
1049 .n.nlmsg_type = delete ? XFRM_MSG_DELSA : XFRM_MSG_GETSA,
1050 .xsid.family = preferred_family,
1051 };
1052 struct xfrm_id id;
1053 char *idp = NULL;
1054 struct xfrm_mark mark = {0, 0};
1055
1056 while (argc > 0) {
1057 xfrm_address_t saddr;
1058
1059 if (strcmp(*argv, "mark") == 0) {
1060 xfrm_parse_mark(&mark, &argc, &argv);
1061 } else {
1062 if (idp)
1063 invarg("unknown", *argv);
1064 idp = *argv;
1065
1066 /* ID */
1067 memset(&id, 0, sizeof(id));
1068 memset(&saddr, 0, sizeof(saddr));
1069 xfrm_id_parse(&saddr, &id, &req.xsid.family, 0,
1070 &argc, &argv);
1071
1072 memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr));
1073 req.xsid.spi = id.spi;
1074 req.xsid.proto = id.proto;
1075
1076 addattr_l(&req.n, sizeof(req.buf), XFRMA_SRCADDR,
1077 (void *)&saddr, sizeof(saddr));
1078 }
1079
1080 argc--; argv++;
1081 }
1082
1083 if (mark.m & mark.v) {
1084 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
1085 (void *)&mark, sizeof(mark));
1086 if (r < 0) {
1087 fprintf(stderr, "XFRMA_MARK failed\n");
1088 exit(1);
1089 }
1090 }
1091
1092 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1093 exit(1);
1094
1095 if (req.xsid.family == AF_UNSPEC)
1096 req.xsid.family = AF_INET;
1097
1098 if (delete) {
1099 if (rtnl_talk(&rth, &req.n, NULL) < 0)
1100 exit(2);
1101 } else {
1102 struct nlmsghdr *answer;
1103
1104 if (rtnl_talk(&rth, &req.n, &answer) < 0)
1105 exit(2);
1106
1107 if (xfrm_state_print(answer, (void *)stdout) < 0) {
1108 fprintf(stderr, "An error :-)\n");
1109 exit(1);
1110 }
1111
1112 free(answer);
1113 }
1114
1115 rtnl_close(&rth);
1116
1117 return 0;
1118 }
1119
1120 /*
1121 * With an existing state of nlmsg, make new nlmsg for deleting the state
1122 * and store it to buffer.
1123 */
1124 static int xfrm_state_keep(struct nlmsghdr *n, void *arg)
1125 {
1126 struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
1127 struct rtnl_handle *rth = xb->rth;
1128 struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
1129 int len = n->nlmsg_len;
1130 struct nlmsghdr *new_n;
1131 struct xfrm_usersa_id *xsid;
1132 struct rtattr *tb[XFRMA_MAX+1];
1133
1134 if (n->nlmsg_type != XFRM_MSG_NEWSA) {
1135 fprintf(stderr, "Not a state: %08x %08x %08x\n",
1136 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
1137 return 0;
1138 }
1139
1140 len -= NLMSG_LENGTH(sizeof(*xsinfo));
1141 if (len < 0) {
1142 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
1143 return -1;
1144 }
1145
1146 if (!xfrm_state_filter_match(xsinfo))
1147 return 0;
1148
1149 if (xsinfo->id.proto == IPPROTO_IPIP ||
1150 xsinfo->id.proto == IPPROTO_IPV6)
1151 return 0;
1152
1153 if (xb->offset > xb->size) {
1154 fprintf(stderr, "State buffer overflow\n");
1155 return -1;
1156 }
1157
1158 new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
1159 new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xsid));
1160 new_n->nlmsg_flags = NLM_F_REQUEST;
1161 new_n->nlmsg_type = XFRM_MSG_DELSA;
1162 new_n->nlmsg_seq = ++rth->seq;
1163
1164 xsid = NLMSG_DATA(new_n);
1165 xsid->family = xsinfo->family;
1166 memcpy(&xsid->daddr, &xsinfo->id.daddr, sizeof(xsid->daddr));
1167 xsid->spi = xsinfo->id.spi;
1168 xsid->proto = xsinfo->id.proto;
1169
1170 addattr_l(new_n, xb->size, XFRMA_SRCADDR, &xsinfo->saddr,
1171 sizeof(xsid->daddr));
1172
1173 parse_rtattr(tb, XFRMA_MAX, XFRMS_RTA(xsinfo), len);
1174
1175 if (tb[XFRMA_MARK]) {
1176 int r = addattr_l(new_n, xb->size, XFRMA_MARK,
1177 (void *)RTA_DATA(tb[XFRMA_MARK]), tb[XFRMA_MARK]->rta_len);
1178 if (r < 0) {
1179 fprintf(stderr, "%s: XFRMA_MARK failed\n", __func__);
1180 exit(1);
1181 }
1182 }
1183
1184 xb->offset += new_n->nlmsg_len;
1185 xb->nlmsg_count++;
1186
1187 return 0;
1188 }
1189
1190 static int xfrm_state_list_or_deleteall(int argc, char **argv, int deleteall)
1191 {
1192 char *idp = NULL;
1193 struct rtnl_handle rth;
1194 bool nokeys = false;
1195
1196 if (argc > 0 || preferred_family != AF_UNSPEC)
1197 filter.use = 1;
1198 filter.xsinfo.family = preferred_family;
1199
1200 while (argc > 0) {
1201 if (strcmp(*argv, "nokeys") == 0) {
1202 nokeys = true;
1203 } else if (strcmp(*argv, "mode") == 0) {
1204 NEXT_ARG();
1205 xfrm_mode_parse(&filter.xsinfo.mode, &argc, &argv);
1206
1207 filter.mode_mask = XFRM_FILTER_MASK_FULL;
1208
1209 } else if (strcmp(*argv, "reqid") == 0) {
1210 NEXT_ARG();
1211 xfrm_reqid_parse(&filter.xsinfo.reqid, &argc, &argv);
1212
1213 filter.reqid_mask = XFRM_FILTER_MASK_FULL;
1214
1215 } else if (strcmp(*argv, "flag") == 0) {
1216 NEXT_ARG();
1217 xfrm_state_flag_parse(&filter.xsinfo.flags, &argc, &argv);
1218
1219 filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
1220
1221 } else {
1222 if (idp)
1223 invarg("unknown", *argv);
1224 idp = *argv;
1225
1226 /* ID */
1227 xfrm_id_parse(&filter.xsinfo.saddr, &filter.xsinfo.id,
1228 &filter.xsinfo.family, 1, &argc, &argv);
1229 if (preferred_family == AF_UNSPEC)
1230 preferred_family = filter.xsinfo.family;
1231 }
1232 argc--; argv++;
1233 }
1234
1235 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1236 exit(1);
1237
1238 if (deleteall) {
1239 struct xfrm_buffer xb;
1240 char buf[NLMSG_DELETEALL_BUF_SIZE];
1241 int i;
1242
1243 xb.buf = buf;
1244 xb.size = sizeof(buf);
1245 xb.rth = &rth;
1246
1247 for (i = 0; ; i++) {
1248 struct {
1249 struct nlmsghdr n;
1250 char buf[NLMSG_BUF_SIZE];
1251 } req = {
1252 .n.nlmsg_len = NLMSG_HDRLEN,
1253 .n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
1254 .n.nlmsg_type = XFRM_MSG_GETSA,
1255 .n.nlmsg_seq = rth.dump = ++rth.seq,
1256 };
1257
1258 xb.offset = 0;
1259 xb.nlmsg_count = 0;
1260
1261 if (show_stats > 1)
1262 fprintf(stderr, "Delete-all round = %d\n", i);
1263
1264 if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) {
1265 perror("Cannot send dump request");
1266 exit(1);
1267 }
1268
1269 if (rtnl_dump_filter(&rth, xfrm_state_keep, &xb) < 0) {
1270 fprintf(stderr, "Delete-all terminated\n");
1271 exit(1);
1272 }
1273 if (xb.nlmsg_count == 0) {
1274 if (show_stats > 1)
1275 fprintf(stderr, "Delete-all completed\n");
1276 break;
1277 }
1278
1279 if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) {
1280 perror("Failed to send delete-all request\n");
1281 exit(1);
1282 }
1283 if (show_stats > 1)
1284 fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count);
1285
1286 xb.offset = 0;
1287 xb.nlmsg_count = 0;
1288 }
1289
1290 } else {
1291 struct xfrm_address_filter addrfilter = {
1292 .saddr = filter.xsinfo.saddr,
1293 .daddr = filter.xsinfo.id.daddr,
1294 .family = filter.xsinfo.family,
1295 .splen = filter.id_src_mask,
1296 .dplen = filter.id_dst_mask,
1297 };
1298 struct {
1299 struct nlmsghdr n;
1300 char buf[NLMSG_BUF_SIZE];
1301 } req = {
1302 .n.nlmsg_len = NLMSG_HDRLEN,
1303 .n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
1304 .n.nlmsg_type = XFRM_MSG_GETSA,
1305 .n.nlmsg_seq = rth.dump = ++rth.seq,
1306 };
1307
1308 if (filter.xsinfo.id.proto)
1309 addattr8(&req.n, sizeof(req), XFRMA_PROTO,
1310 filter.xsinfo.id.proto);
1311 addattr_l(&req.n, sizeof(req), XFRMA_ADDRESS_FILTER,
1312 &addrfilter, sizeof(addrfilter));
1313
1314 if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) {
1315 perror("Cannot send dump request");
1316 exit(1);
1317 }
1318
1319 rtnl_filter_t filter = nokeys ?
1320 xfrm_state_print_nokeys : xfrm_state_print;
1321 if (rtnl_dump_filter(&rth, filter, stdout) < 0) {
1322 fprintf(stderr, "Dump terminated\n");
1323 exit(1);
1324 }
1325 }
1326
1327 rtnl_close(&rth);
1328
1329 exit(0);
1330 }
1331
1332 static int print_sadinfo(struct nlmsghdr *n, void *arg)
1333 {
1334 FILE *fp = (FILE *)arg;
1335 __u32 *f = NLMSG_DATA(n);
1336 struct rtattr *tb[XFRMA_SAD_MAX+1];
1337 struct rtattr *rta;
1338 int len = n->nlmsg_len;
1339
1340 len -= NLMSG_LENGTH(sizeof(__u32));
1341 if (len < 0) {
1342 fprintf(stderr, "SADinfo: Wrong len %d\n", len);
1343 return -1;
1344 }
1345
1346 rta = XFRMSAPD_RTA(f);
1347 parse_rtattr(tb, XFRMA_SAD_MAX, rta, len);
1348
1349 if (tb[XFRMA_SAD_CNT]) {
1350 __u32 cnt;
1351
1352 fprintf(fp, "\t SAD");
1353 cnt = rta_getattr_u32(tb[XFRMA_SAD_CNT]);
1354 fprintf(fp, " count %u", cnt);
1355 } else {
1356 fprintf(fp, "BAD SAD info returned\n");
1357 return -1;
1358 }
1359
1360 if (show_stats) {
1361 if (tb[XFRMA_SAD_HINFO]) {
1362 struct xfrmu_sadhinfo *si;
1363
1364 if (RTA_PAYLOAD(tb[XFRMA_SAD_HINFO]) < sizeof(*si)) {
1365 fprintf(fp, "BAD SAD length returned\n");
1366 return -1;
1367 }
1368
1369 si = RTA_DATA(tb[XFRMA_SAD_HINFO]);
1370 fprintf(fp, " (buckets ");
1371 fprintf(fp, "count %d", si->sadhcnt);
1372 fprintf(fp, " Max %d", si->sadhmcnt);
1373 fprintf(fp, ")");
1374 }
1375 }
1376 fprintf(fp, "\n");
1377
1378 return 0;
1379 }
1380
1381 static int xfrm_sad_getinfo(int argc, char **argv)
1382 {
1383 struct rtnl_handle rth;
1384 struct {
1385 struct nlmsghdr n;
1386 __u32 flags;
1387 } req = {
1388 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.flags)),
1389 .n.nlmsg_flags = NLM_F_REQUEST,
1390 .n.nlmsg_type = XFRM_MSG_GETSADINFO,
1391 .flags = 0XFFFFFFFF,
1392 };
1393 struct nlmsghdr *answer;
1394
1395 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1396 exit(1);
1397
1398 if (rtnl_talk(&rth, &req.n, &answer) < 0)
1399 exit(2);
1400
1401 print_sadinfo(answer, (void *)stdout);
1402
1403 free(answer);
1404 rtnl_close(&rth);
1405
1406 return 0;
1407 }
1408
1409 static int xfrm_state_flush(int argc, char **argv)
1410 {
1411 struct rtnl_handle rth;
1412 struct {
1413 struct nlmsghdr n;
1414 struct xfrm_usersa_flush xsf;
1415 } req = {
1416 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsf)),
1417 .n.nlmsg_flags = NLM_F_REQUEST,
1418 .n.nlmsg_type = XFRM_MSG_FLUSHSA,
1419 };
1420 char *protop = NULL;
1421
1422 while (argc > 0) {
1423 if (strcmp(*argv, "proto") == 0) {
1424 int ret;
1425
1426 if (protop)
1427 duparg("proto", *argv);
1428 protop = *argv;
1429
1430 NEXT_ARG();
1431
1432 ret = xfrm_xfrmproto_getbyname(*argv);
1433 if (ret < 0)
1434 invarg("XFRM-PROTO value is invalid", *argv);
1435
1436 req.xsf.proto = (__u8)ret;
1437 } else
1438 invarg("unknown", *argv);
1439
1440 argc--; argv++;
1441 }
1442
1443 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1444 exit(1);
1445
1446 if (show_stats > 1)
1447 fprintf(stderr, "Flush state with XFRM-PROTO value \"%s\"\n",
1448 strxf_xfrmproto(req.xsf.proto));
1449
1450 if (rtnl_talk(&rth, &req.n, NULL) < 0)
1451 exit(2);
1452
1453 rtnl_close(&rth);
1454
1455 return 0;
1456 }
1457
1458 int do_xfrm_state(int argc, char **argv)
1459 {
1460 if (argc < 1)
1461 return xfrm_state_list_or_deleteall(0, NULL, 0);
1462
1463 if (matches(*argv, "add") == 0)
1464 return xfrm_state_modify(XFRM_MSG_NEWSA, 0,
1465 argc-1, argv+1);
1466 if (matches(*argv, "update") == 0)
1467 return xfrm_state_modify(XFRM_MSG_UPDSA, 0,
1468 argc-1, argv+1);
1469 if (matches(*argv, "allocspi") == 0)
1470 return xfrm_state_allocspi(argc-1, argv+1);
1471 if (matches(*argv, "delete") == 0)
1472 return xfrm_state_get_or_delete(argc-1, argv+1, 1);
1473 if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0)
1474 return xfrm_state_list_or_deleteall(argc-1, argv+1, 1);
1475 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1476 || matches(*argv, "lst") == 0)
1477 return xfrm_state_list_or_deleteall(argc-1, argv+1, 0);
1478 if (matches(*argv, "get") == 0)
1479 return xfrm_state_get_or_delete(argc-1, argv+1, 0);
1480 if (matches(*argv, "flush") == 0)
1481 return xfrm_state_flush(argc-1, argv+1);
1482 if (matches(*argv, "count") == 0) {
1483 return xfrm_sad_getinfo(argc, argv);
1484 }
1485 if (matches(*argv, "help") == 0)
1486 usage();
1487 fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv);
1488 exit(-1);
1489 }
Upstream mirror of iproute2