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c7699875 1/* $USAGI: $ */
2
3/*
4 * Copyright (C)2004 USAGI/WIDE Project
ae665a52 5 *
c7699875 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.
ae665a52 10 *
c7699875 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.
ae665a52 15 *
c7699875 16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20/*
21 * based on iproute.c
22 */
23/*
24 * Authors:
25 * Masahide NAKAMURA @USAGI
26 */
27
28#include <stdio.h>
29#include <stdlib.h>
30#include <string.h>
31#include <netdb.h>
32#include <linux/netlink.h>
33#include <linux/xfrm.h>
34#include "utils.h"
35#include "xfrm.h"
36#include "ip_common.h"
37
9bec1a43
SH		 38//#define NLMSG_DELETEALL_BUF_SIZE (4096-512)
39#define NLMSG_DELETEALL_BUF_SIZE 8192
c7699875 40
41/*
42 * Receiving buffer defines:
43 * nlmsg
44 * data = struct xfrm_userpolicy_info
45 * rtattr
46 * data = struct xfrm_user_tmpl[]
47 */
48#define NLMSG_BUF_SIZE 4096
49#define RTA_BUF_SIZE 2048
50#define XFRM_TMPLS_BUF_SIZE 1024
e4f054f0 51#define CTX_BUF_SIZE 256
c7699875 52
53static void usage(void) __attribute__((noreturn));
54
55static void usage(void)
56{
e4f054f0 57 fprintf(stderr, "Usage: ip xfrm policy { add | update } dir DIR SELECTOR [ ctx SEC_CTX ][ index INDEX ] [ ptype PTYPE ]\n");
ee675e87 58 fprintf(stderr, " [ action ACTION ] [ priority PRIORITY ] [ flag FLAG-LIST ] [ LIMIT-LIST ] [ TMPL-LIST ] [mark MARK [mask MASK]]\n");
e4f054f0 59 fprintf(stderr, "Usage: ip xfrm policy { delete | get } dir DIR [ SELECTOR | index INDEX ] [ ctx SEC_CTX ][ ptype PTYPE ] [mark MARK [mask MASK]]\n");
9bec1a43 60 fprintf(stderr, "Usage: ip xfrm policy { deleteall | list } [ dir DIR ] [ SELECTOR ]\n");
c1fa2253 61 fprintf(stderr, " [ index INDEX ] [ action ACTION ] [ priority PRIORITY ] [ flag FLAG-LIST ]\n");
972938e9 62 fprintf(stderr, "Usage: ip xfrm policy flush [ ptype PTYPE ]\n");
f90c4f4e 63 fprintf(stderr, "Usage: ip xfrm count\n");
972938e9 64 fprintf(stderr, "PTYPE := [ main | sub ](default=main)\n");
c7699875 65 fprintf(stderr, "DIR := [ in | out | fwd ]\n");
66
7809c616 67 fprintf(stderr, "SELECTOR := src ADDR[/PLEN] dst ADDR[/PLEN] [ UPSPEC ] [ dev DEV ]\n");
c7699875 68
c70b36d2 69 fprintf(stderr, "UPSPEC := proto PROTO [ [ sport PORT ] [ dport PORT ] |\n");
4a9608e6
TT		 70 fprintf(stderr, " [ type NUMBER ] [ code NUMBER ] |\n");
71 fprintf(stderr, " [ key { DOTTED_QUAD | NUMBER } ] ]\n");
c7699875 72
73 //fprintf(stderr, "DEV - device name(default=none)\n");
74
75 fprintf(stderr, "ACTION := [ allow | block ](default=allow)\n");
76
77 //fprintf(stderr, "PRIORITY - priority value(default=0)\n");
78
c1fa2253
MN		 79 fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
80 fprintf(stderr, "FLAG := [ localok ]\n");
81
c7699875 82 fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] | [ limit LIMIT ]\n");
83 fprintf(stderr, "LIMIT := [ [time-soft|time-hard|time-use-soft|time-use-hard] SECONDS ] |\n");
84 fprintf(stderr, " [ [byte-soft|byte-hard] SIZE ] | [ [packet-soft|packet-hard] NUMBER ]\n");
85
ad273962 86 fprintf(stderr, "TMPL-LIST := [ TMPL-LIST ] | [ tmpl TMPL ]\n");
c7699875 87 fprintf(stderr, "TMPL := ID [ mode MODE ] [ reqid REQID ] [ level LEVEL ]\n");
88 fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM_PROTO ] [ spi SPI ]\n");
89
ad273962 90 fprintf(stderr, "XFRM_PROTO := [ ");
29aa4dd7 91 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ESP));
92 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_AH));
7ea4f5d3
MN		 93 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_COMP));
94 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ROUTING));
95 fprintf(stderr, "%s ", strxf_xfrmproto(IPPROTO_DSTOPTS));
96 fprintf(stderr, "]\n");
c7699875 97
34e099e2 98 fprintf(stderr, "MODE := [ transport | tunnel | beet ](default=transport)\n");
c7699875 99 //fprintf(stderr, "REQID - number(default=0)\n");
100 fprintf(stderr, "LEVEL := [ required | use ](default=required)\n");
101
102 exit(-1);
103}
104
105static int xfrm_policy_dir_parse(__u8 *dir, int *argcp, char ***argvp)
106{
107 int argc = *argcp;
108 char **argv = *argvp;
109
110 if (strcmp(*argv, "in") == 0)
111 *dir = XFRM_POLICY_IN;
112 else if (strcmp(*argv, "out") == 0)
113 *dir = XFRM_POLICY_OUT;
114 else if (strcmp(*argv, "fwd") == 0)
115 *dir = XFRM_POLICY_FWD;
116 else
117 invarg("\"DIR\" is invalid", *argv);
118
119 *argcp = argc;
120 *argvp = argv;
121
122 return 0;
123}
124
972938e9
MN		 125static int xfrm_policy_ptype_parse(__u8 *ptype, int *argcp, char ***argvp)
126{
127 int argc = *argcp;
128 char **argv = *argvp;
129
130 if (strcmp(*argv, "main") == 0)
131 *ptype = XFRM_POLICY_TYPE_MAIN;
132 else if (strcmp(*argv, "sub") == 0)
133 *ptype = XFRM_POLICY_TYPE_SUB;
134 else
135 invarg("\"PTYPE\" is invalid", *argv);
136
137 *argcp = argc;
138 *argvp = argv;
139
140 return 0;
141}
142
c1fa2253
MN		 143static int xfrm_policy_flag_parse(__u8 *flags, int *argcp, char ***argvp)
144{
145 int argc = *argcp;
146 char **argv = *argvp;
147 int len = strlen(*argv);
148
149 if (len > 2 && strncmp(*argv, "0x", 2) == 0) {
150 __u8 val = 0;
151
152 if (get_u8(&val, *argv, 16))
153 invarg("\"FLAG\" is invalid", *argv);
154 *flags = val;
155 } else {
156 while (1) {
157 if (strcmp(*argv, "localok") == 0)
158 *flags |= XFRM_POLICY_LOCALOK;
159 else {
160 PREV_ARG(); /* back track */
161 break;
162 }
163
164 if (!NEXT_ARG_OK())
165 break;
166 NEXT_ARG();
167 }
168 }
169
170 *argcp = argc;
171 *argvp = argv;
172
173 return 0;
174}
175
c7699875 176static int xfrm_tmpl_parse(struct xfrm_user_tmpl *tmpl,
177 int *argcp, char ***argvp)
178{
179 int argc = *argcp;
180 char **argv = *argvp;
181 char *idp = NULL;
182
183 while (1) {
184 if (strcmp(*argv, "mode") == 0) {
185 NEXT_ARG();
186 xfrm_mode_parse(&tmpl->mode, &argc, &argv);
187 } else if (strcmp(*argv, "reqid") == 0) {
188 NEXT_ARG();
189 xfrm_reqid_parse(&tmpl->reqid, &argc, &argv);
190 } else if (strcmp(*argv, "level") == 0) {
191 NEXT_ARG();
192
193 if (strcmp(*argv, "required") == 0)
194 tmpl->optional = 0;
195 else if (strcmp(*argv, "use") == 0)
196 tmpl->optional = 1;
197 else
7809c616 198 invarg("\"LEVEL\" is invalid\n", *argv);
c7699875 199
200 } else {
201 if (idp) {
202 PREV_ARG(); /* back track */
203 break;
204 }
205 idp = *argv;
e6e0b60f 206 preferred_family = AF_UNSPEC;
c7699875 207 xfrm_id_parse(&tmpl->saddr, &tmpl->id, &tmpl->family,
7809c616 208 0, &argc, &argv);
e6e0b60f 209 preferred_family = tmpl->family;
c7699875 210 }
211
212 if (!NEXT_ARG_OK())
213 break;
214
215 NEXT_ARG();
216 }
217 if (argc == *argcp)
218 missarg("TMPL");
219
220 *argcp = argc;
221 *argvp = argv;
222
223 return 0;
224}
225
e4f054f0
JL		 226int xfrm_sctx_parse(char *ctxstr, char *s,
227 struct xfrm_user_sec_ctx *sctx)
228{
229 int slen;
230
231 slen = strlen(s) + 1;
232
233 sctx->exttype = XFRMA_SEC_CTX;
234 sctx->ctx_doi = 1;
235 sctx->ctx_alg = 1;
236 sctx->ctx_len = slen;
237 sctx->len = sizeof(struct xfrm_user_sec_ctx) + slen;
238 memcpy(ctxstr, s, slen);
239
240 return 0;
241}
242
c7699875 243static int xfrm_policy_modify(int cmd, unsigned flags, int argc, char **argv)
244{
245 struct rtnl_handle rth;
246 struct {
247 struct nlmsghdr n;
248 struct xfrm_userpolicy_info xpinfo;
249 char buf[RTA_BUF_SIZE];
250 } req;
251 char *dirp = NULL;
7809c616 252 char *selp = NULL;
972938e9 253 char *ptypep = NULL;
e4f054f0 254 char *sctxp = NULL;
972938e9 255 struct xfrm_userpolicy_type upt;
c7699875 256 char tmpls_buf[XFRM_TMPLS_BUF_SIZE];
257 int tmpls_len = 0;
ee675e87 258 struct xfrm_mark mark = {0, 0};
e4f054f0
JL		 259 struct {
260 struct xfrm_user_sec_ctx sctx;
261 char str[CTX_BUF_SIZE];
262 } ctx;
c7699875 263
264 memset(&req, 0, sizeof(req));
972938e9 265 memset(&upt, 0, sizeof(upt));
c7699875 266 memset(&tmpls_buf, 0, sizeof(tmpls_buf));
e4f054f0 267 memset(&ctx, 0, sizeof(ctx));
c7699875 268
269 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xpinfo));
270 req.n.nlmsg_flags = NLM_F_REQUEST|flags;
271 req.n.nlmsg_type = cmd;
272 req.xpinfo.sel.family = preferred_family;
273
274 req.xpinfo.lft.soft_byte_limit = XFRM_INF;
275 req.xpinfo.lft.hard_byte_limit = XFRM_INF;
276 req.xpinfo.lft.soft_packet_limit = XFRM_INF;
277 req.xpinfo.lft.hard_packet_limit = XFRM_INF;
278
279 while (argc > 0) {
280 if (strcmp(*argv, "dir") == 0) {
281 if (dirp)
282 duparg("dir", *argv);
283 dirp = *argv;
284
285 NEXT_ARG();
286 xfrm_policy_dir_parse(&req.xpinfo.dir, &argc, &argv);
e4f054f0
JL		 287 } else if (strcmp(*argv, "ctx") == 0) {
288 char *context;
289
290 if (sctxp)
291 duparg("ctx", *argv);
292 sctxp = *argv;
293 NEXT_ARG();
294 context = *argv;
295 xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
ee675e87
JHS		 296 } else if (strcmp(*argv, "mark") == 0) {
297 xfrm_parse_mark(&mark, &argc, &argv);
c7699875 298 } else if (strcmp(*argv, "index") == 0) {
299 NEXT_ARG();
300 if (get_u32(&req.xpinfo.index, *argv, 0))
301 invarg("\"INDEX\" is invalid", *argv);
972938e9
MN		 302 } else if (strcmp(*argv, "ptype") == 0) {
303 if (ptypep)
304 duparg("ptype", *argv);
305 ptypep = *argv;
306
307 NEXT_ARG();
308 xfrm_policy_ptype_parse(&upt.type, &argc, &argv);
c7699875 309 } else if (strcmp(*argv, "action") == 0) {
310 NEXT_ARG();
311 if (strcmp(*argv, "allow") == 0)
312 req.xpinfo.action = XFRM_POLICY_ALLOW;
313 else if (strcmp(*argv, "block") == 0)
314 req.xpinfo.action = XFRM_POLICY_BLOCK;
315 else
316 invarg("\"action\" value is invalid\n", *argv);
c7699875 317 } else if (strcmp(*argv, "priority") == 0) {
318 NEXT_ARG();
319 if (get_u32(&req.xpinfo.priority, *argv, 0))
320 invarg("\"PRIORITY\" is invalid", *argv);
c1fa2253
MN		 321 } else if (strcmp(*argv, "flag") == 0) {
322 NEXT_ARG();
323 xfrm_policy_flag_parse(&req.xpinfo.flags, &argc,
324 &argv);
c7699875 325 } else if (strcmp(*argv, "limit") == 0) {
326 NEXT_ARG();
327 xfrm_lifetime_cfg_parse(&req.xpinfo.lft, &argc, &argv);
328 } else if (strcmp(*argv, "tmpl") == 0) {
329 struct xfrm_user_tmpl *tmpl;
330
331 if (tmpls_len + sizeof(*tmpl) > sizeof(tmpls_buf)) {
332 fprintf(stderr, "Too many tmpls: buffer overflow\n");
333 exit(1);
334 }
335 tmpl = (struct xfrm_user_tmpl *)((char *)tmpls_buf + tmpls_len);
336
337 tmpl->family = preferred_family;
338 tmpl->aalgos = (~(__u32)0);
339 tmpl->ealgos = (~(__u32)0);
340 tmpl->calgos = (~(__u32)0);
341
342 NEXT_ARG();
343 xfrm_tmpl_parse(tmpl, &argc, &argv);
344
345 tmpls_len += sizeof(*tmpl);
7809c616 346 } else {
347 if (selp)
348 duparg("unknown", *argv);
349 selp = *argv;
350
351 xfrm_selector_parse(&req.xpinfo.sel, &argc, &argv);
352 if (preferred_family == AF_UNSPEC)
353 preferred_family = req.xpinfo.sel.family;
354 }
c7699875 355
356 argc--; argv++;
357 }
358
359 if (!dirp) {
360 fprintf(stderr, "Not enough information: \"DIR\" is required.\n");
361 exit(1);
362 }
363
972938e9
MN		 364 if (ptypep) {
365 addattr_l(&req.n, sizeof(req), XFRMA_POLICY_TYPE,
366 (void *)&upt, sizeof(upt));
367 }
368
c7699875 369 if (tmpls_len > 0) {
370 addattr_l(&req.n, sizeof(req), XFRMA_TMPL,
371 (void *)tmpls_buf, tmpls_len);
372 }
373
ee675e87
JHS		 374 if (mark.m & mark.v) {
375 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
376 (void *)&mark, sizeof(mark));
377 if (r < 0) {
378 fprintf(stderr, "%s: XFRMA_MARK failed\n",__func__);
379 exit(1);
380 }
381 }
382
e4f054f0
JL		 383 if (sctxp) {
384 addattr_l(&req.n, sizeof(req), XFRMA_SEC_CTX,
385 (void *)&ctx, ctx.sctx.len);
386 }
ee675e87 387
c7699875 388 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
389 exit(1);
390
391 if (req.xpinfo.sel.family == AF_UNSPEC)
392 req.xpinfo.sel.family = AF_INET;
393
394 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
395 exit(2);
396
397 rtnl_close(&rth);
398
399 return 0;
400}
401
972938e9
MN		 402static int xfrm_policy_filter_match(struct xfrm_userpolicy_info *xpinfo,
403 __u8 ptype)
c7699875 404{
405 if (!filter.use)
406 return 1;
407
408 if ((xpinfo->dir^filter.xpinfo.dir)&filter.dir_mask)
409 return 0;
410
972938e9
MN		 411 if ((ptype^filter.ptype)&filter.ptype_mask)
412 return 0;
413
c7699875 414 if (filter.sel_src_mask) {
eaa34ee3 415 if (xfrm_addr_match(&xpinfo->sel.saddr, &filter.xpinfo.sel.saddr,
416 filter.sel_src_mask))
c7699875 417 return 0;
418 }
419
420 if (filter.sel_dst_mask) {
eaa34ee3 421 if (xfrm_addr_match(&xpinfo->sel.daddr, &filter.xpinfo.sel.daddr,
422 filter.sel_dst_mask))
c7699875 423 return 0;
424 }
425
426 if ((xpinfo->sel.ifindex^filter.xpinfo.sel.ifindex)&filter.sel_dev_mask)
427 return 0;
428
429 if ((xpinfo->sel.proto^filter.xpinfo.sel.proto)&filter.upspec_proto_mask)
430 return 0;
431
432 if (filter.upspec_sport_mask) {
433 if ((xpinfo->sel.sport^filter.xpinfo.sel.sport)&filter.upspec_sport_mask)
434 return 0;
435 }
436
437 if (filter.upspec_dport_mask) {
438 if ((xpinfo->sel.dport^filter.xpinfo.sel.dport)&filter.upspec_dport_mask)
439 return 0;
440 }
441
442 if ((xpinfo->index^filter.xpinfo.index)&filter.index_mask)
443 return 0;
444
445 if ((xpinfo->action^filter.xpinfo.action)&filter.action_mask)
446 return 0;
447
448 if ((xpinfo->priority^filter.xpinfo.priority)&filter.priority_mask)
449 return 0;
450
c1fa2253
MN		 451 if (filter.policy_flags_mask)
452 if ((xpinfo->flags & filter.xpinfo.flags) == 0)
453 return 0;
454
c7699875 455 return 1;
456}
457
56e8ad38 458int xfrm_policy_print(const struct sockaddr_nl *who, struct nlmsghdr *n,
459 void *arg)
c7699875 460{
2534613e 461 struct rtattr * tb[XFRMA_MAX+1];
90f93024 462 struct rtattr * rta;
c595c790
SH		 463 struct xfrm_userpolicy_info *xpinfo = NULL;
464 struct xfrm_user_polexpire *xpexp = NULL;
465 struct xfrm_userpolicy_id *xpid = NULL;
972938e9 466 __u8 ptype = XFRM_POLICY_TYPE_MAIN;
c595c790
SH		 467 FILE *fp = (FILE*)arg;
468 int len = n->nlmsg_len;
c7699875 469
470 if (n->nlmsg_type != XFRM_MSG_NEWPOLICY &&
90f93024 471 n->nlmsg_type != XFRM_MSG_DELPOLICY &&
669ae748 472 n->nlmsg_type != XFRM_MSG_UPDPOLICY &&
90f93024 473 n->nlmsg_type != XFRM_MSG_POLEXPIRE) {
c7699875 474 fprintf(stderr, "Not a policy: %08x %08x %08x\n",
475 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
476 return 0;
477 }
478
669ae748
SH		 479 if (n->nlmsg_type == XFRM_MSG_DELPOLICY) {
480 xpid = NLMSG_DATA(n);
af1b6a41 481 len -= NLMSG_SPACE(sizeof(*xpid));
669ae748 482 } else if (n->nlmsg_type == XFRM_MSG_POLEXPIRE) {
90f93024
SH		 483 xpexp = NLMSG_DATA(n);
484 xpinfo = &xpexp->pol;
af1b6a41 485 len -= NLMSG_SPACE(sizeof(*xpexp));
90f93024
SH		 486 } else {
487 xpexp = NULL;
488 xpinfo = NLMSG_DATA(n);
af1b6a41 489 len -= NLMSG_SPACE(sizeof(*xpinfo));
90f93024
SH		 490 }
491
c7699875 492 if (len < 0) {
493 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
494 return -1;
495 }
496
669ae748
SH		 497 if (n->nlmsg_type == XFRM_MSG_DELPOLICY)
498 rta = XFRMPID_RTA(xpid);
499 else if (n->nlmsg_type == XFRM_MSG_POLEXPIRE)
90f93024
SH		 500 rta = XFRMPEXP_RTA(xpexp);
501 else
502 rta = XFRMP_RTA(xpinfo);
503
504 parse_rtattr(tb, XFRMA_MAX, rta, len);
c7699875 505
972938e9
MN		 506 if (tb[XFRMA_POLICY_TYPE]) {
507 struct xfrm_userpolicy_type *upt;
508
509 if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt)) {
510 fprintf(stderr, "too short XFRMA_POLICY_TYPE len\n");
511 return -1;
512 }
513 upt = (struct xfrm_userpolicy_type *)RTA_DATA(tb[XFRMA_POLICY_TYPE]);
514 ptype = upt->type;
515 }
516
517 if (xpinfo && !xfrm_policy_filter_match(xpinfo, ptype))
518 return 0;
519
520 if (n->nlmsg_type == XFRM_MSG_DELPOLICY)
521 fprintf(fp, "Deleted ");
522 else if (n->nlmsg_type == XFRM_MSG_UPDPOLICY)
523 fprintf(fp, "Updated ");
524 else if (n->nlmsg_type == XFRM_MSG_POLEXPIRE)
525 fprintf(fp, "Expired ");
526
c595c790 527 if (n->nlmsg_type == XFRM_MSG_DELPOLICY) {
c595c790 528 //xfrm_policy_id_print();
669ae748
SH		 529 if (!tb[XFRMA_POLICY]) {
530 fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: no XFRMA_POLICY\n");
531 return -1;
c595c790 532 }
669ae748
SH		 533 if (RTA_PAYLOAD(tb[XFRMA_POLICY]) < sizeof(*xpinfo)) {
534 fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n");
535 return -1;
536 }
537 xpinfo = (struct xfrm_userpolicy_info *)RTA_DATA(tb[XFRMA_POLICY]);
538 }
c7699875 539
56e8ad38 540 xfrm_policy_info_print(xpinfo, tb, fp, NULL, NULL);
c7699875 541
90f93024
SH		 542 if (n->nlmsg_type == XFRM_MSG_POLEXPIRE) {
543 fprintf(fp, "\t");
544 fprintf(fp, "hard %u", xpexp->hard);
545 fprintf(fp, "%s", _SL_);
546 }
547
7809c616 548 if (oneline)
549 fprintf(fp, "\n");
669ae748 550 fflush(fp);
7809c616 551
c7699875 552 return 0;
553}
554
555static int xfrm_policy_get_or_delete(int argc, char **argv, int delete,
556 void *res_nlbuf)
557{
558 struct rtnl_handle rth;
559 struct {
560 struct nlmsghdr n;
561 struct xfrm_userpolicy_id xpid;
972938e9 562 char buf[RTA_BUF_SIZE];
c7699875 563 } req;
564 char *dirp = NULL;
565 char *selp = NULL;
566 char *indexp = NULL;
972938e9 567 char *ptypep = NULL;
e4f054f0 568 char *sctxp = NULL;
972938e9 569 struct xfrm_userpolicy_type upt;
ee675e87 570 struct xfrm_mark mark = {0, 0};
e4f054f0
JL		 571 struct {
572 struct xfrm_user_sec_ctx sctx;
573 char str[CTX_BUF_SIZE];
574 } ctx;
575
c7699875 576
577 memset(&req, 0, sizeof(req));
972938e9 578 memset(&upt, 0, sizeof(upt));
e4f054f0 579 memset(&ctx, 0, sizeof(ctx));
c7699875 580
581 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xpid));
582 req.n.nlmsg_flags = NLM_F_REQUEST;
583 req.n.nlmsg_type = delete ? XFRM_MSG_DELPOLICY : XFRM_MSG_GETPOLICY;
584
585 while (argc > 0) {
586 if (strcmp(*argv, "dir") == 0) {
587 if (dirp)
588 duparg("dir", *argv);
589 dirp = *argv;
590
591 NEXT_ARG();
592 xfrm_policy_dir_parse(&req.xpid.dir, &argc, &argv);
593
e4f054f0
JL		 594 } else if (strcmp(*argv, "ctx") == 0) {
595 char *context;
596
597 if (sctxp)
598 duparg("ctx", *argv);
599 sctxp = *argv;
600 NEXT_ARG();
601 context = *argv;
602 xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
ee675e87
JHS		 603 } else if (strcmp(*argv, "mark") == 0) {
604 xfrm_parse_mark(&mark, &argc, &argv);
c7699875 605 } else if (strcmp(*argv, "index") == 0) {
606 if (indexp)
607 duparg("index", *argv);
608 indexp = *argv;
609
610 NEXT_ARG();
611 if (get_u32(&req.xpid.index, *argv, 0))
612 invarg("\"INDEX\" is invalid", *argv);
613
972938e9
MN		 614 } else if (strcmp(*argv, "ptype") == 0) {
615 if (ptypep)
616 duparg("ptype", *argv);
617 ptypep = *argv;
618
619 NEXT_ARG();
620 xfrm_policy_ptype_parse(&upt.type, &argc, &argv);
621
7809c616 622 } else {
623 if (selp)
624 invarg("unknown", *argv);
625 selp = *argv;
626
627 xfrm_selector_parse(&req.xpid.sel, &argc, &argv);
628 if (preferred_family == AF_UNSPEC)
629 preferred_family = req.xpid.sel.family;
630
631 }
c7699875 632
633 argc--; argv++;
634 }
635
636 if (!dirp) {
637 fprintf(stderr, "Not enough information: \"DIR\" is required.\n");
638 exit(1);
639 }
972938e9
MN		 640 if (ptypep) {
641 addattr_l(&req.n, sizeof(req), XFRMA_POLICY_TYPE,
642 (void *)&upt, sizeof(upt));
643 }
c7699875 644 if (!selp && !indexp) {
645 fprintf(stderr, "Not enough information: either \"SELECTOR\" or \"INDEX\" is required.\n");
646 exit(1);
647 }
648 if (selp && indexp)
649 duparg2("SELECTOR", "INDEX");
650
651 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
652 exit(1);
653
654 if (req.xpid.sel.family == AF_UNSPEC)
655 req.xpid.sel.family = AF_INET;
656
ee675e87
JHS		 657 if (mark.m & mark.v) {
658 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
659 (void *)&mark, sizeof(mark));
660 if (r < 0) {
661 fprintf(stderr, "%s: XFRMA_MARK failed\n",__func__);
662 exit(1);
663 }
664 }
665
e4f054f0
JL		 666 if (sctxp) {
667 addattr_l(&req.n, sizeof(req), XFRMA_SEC_CTX,
668 (void *)&ctx, ctx.sctx.len);
669 }
670
c7699875 671 if (rtnl_talk(&rth, &req.n, 0, 0, res_nlbuf, NULL, NULL) < 0)
672 exit(2);
673
674 rtnl_close(&rth);
675
676 return 0;
677}
678
679static int xfrm_policy_delete(int argc, char **argv)
680{
681 return xfrm_policy_get_or_delete(argc, argv, 1, NULL);
682}
683
684static int xfrm_policy_get(int argc, char **argv)
685{
686 char buf[NLMSG_BUF_SIZE];
687 struct nlmsghdr *n = (struct nlmsghdr *)buf;
688
689 memset(buf, 0, sizeof(buf));
690
691 xfrm_policy_get_or_delete(argc, argv, 0, n);
692
693 if (xfrm_policy_print(NULL, n, (void*)stdout) < 0) {
694 fprintf(stderr, "An error :-)\n");
695 exit(1);
696 }
697
698 return 0;
699}
700
701/*
702 * With an existing policy of nlmsg, make new nlmsg for deleting the policy
703 * and store it to buffer.
704 */
6dc9f016 705static int xfrm_policy_keep(const struct sockaddr_nl *who,
50772dc5 706 struct nlmsghdr *n,
6dc9f016 707 void *arg)
c7699875 708{
709 struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
710 struct rtnl_handle *rth = xb->rth;
711 struct xfrm_userpolicy_info *xpinfo = NLMSG_DATA(n);
712 int len = n->nlmsg_len;
972938e9
MN		 713 struct rtattr *tb[XFRMA_MAX+1];
714 __u8 ptype = XFRM_POLICY_TYPE_MAIN;
c7699875 715 struct nlmsghdr *new_n;
716 struct xfrm_userpolicy_id *xpid;
717
718 if (n->nlmsg_type != XFRM_MSG_NEWPOLICY) {
719 fprintf(stderr, "Not a policy: %08x %08x %08x\n",
720 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
721 return 0;
722 }
723
724 len -= NLMSG_LENGTH(sizeof(*xpinfo));
725 if (len < 0) {
726 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
727 return -1;
728 }
729
972938e9
MN		 730 parse_rtattr(tb, XFRMA_MAX, XFRMP_RTA(xpinfo), len);
731
732 if (tb[XFRMA_POLICY_TYPE]) {
733 struct xfrm_userpolicy_type *upt;
734
735 if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt)) {
736 fprintf(stderr, "too short XFRMA_POLICY_TYPE len\n");
737 return -1;
738 }
739 upt = (struct xfrm_userpolicy_type *)RTA_DATA(tb[XFRMA_POLICY_TYPE]);
740 ptype = upt->type;
741 }
742
743 if (!xfrm_policy_filter_match(xpinfo, ptype))
c7699875 744 return 0;
745
746 if (xb->offset > xb->size) {
9bec1a43 747 fprintf(stderr, "Policy buffer overflow\n");
c7699875 748 return -1;
749 }
750
751 new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
752 new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xpid));
753 new_n->nlmsg_flags = NLM_F_REQUEST;
754 new_n->nlmsg_type = XFRM_MSG_DELPOLICY;
755 new_n->nlmsg_seq = ++rth->seq;
756
757 xpid = NLMSG_DATA(new_n);
758 memcpy(&xpid->sel, &xpinfo->sel, sizeof(xpid->sel));
759 xpid->dir = xpinfo->dir;
760 xpid->index = xpinfo->index;
761
762 xb->offset += new_n->nlmsg_len;
763 xb->nlmsg_count ++;
764
765 return 0;
766}
767
9bec1a43 768static int xfrm_policy_list_or_deleteall(int argc, char **argv, int deleteall)
c7699875 769{
7809c616 770 char *selp = NULL;
c7699875 771 struct rtnl_handle rth;
772
773 if (argc > 0)
774 filter.use = 1;
775 filter.xpinfo.sel.family = preferred_family;
776
777 while (argc > 0) {
778 if (strcmp(*argv, "dir") == 0) {
779 NEXT_ARG();
780 xfrm_policy_dir_parse(&filter.xpinfo.dir, &argc, &argv);
781
782 filter.dir_mask = XFRM_FILTER_MASK_FULL;
783
c7699875 784 } else if (strcmp(*argv, "index") == 0) {
785 NEXT_ARG();
786 if (get_u32(&filter.xpinfo.index, *argv, 0))
787 invarg("\"INDEX\" is invalid", *argv);
788
789 filter.index_mask = XFRM_FILTER_MASK_FULL;
790
972938e9
MN		 791 } else if (strcmp(*argv, "ptype") == 0) {
792 NEXT_ARG();
793 xfrm_policy_ptype_parse(&filter.ptype, &argc, &argv);
794
795 filter.ptype_mask = XFRM_FILTER_MASK_FULL;
796
c7699875 797 } else if (strcmp(*argv, "action") == 0) {
798 NEXT_ARG();
799 if (strcmp(*argv, "allow") == 0)
800 filter.xpinfo.action = XFRM_POLICY_ALLOW;
801 else if (strcmp(*argv, "block") == 0)
802 filter.xpinfo.action = XFRM_POLICY_BLOCK;
803 else
7809c616 804 invarg("\"ACTION\" is invalid\n", *argv);
c7699875 805
806 filter.action_mask = XFRM_FILTER_MASK_FULL;
807
808 } else if (strcmp(*argv, "priority") == 0) {
809 NEXT_ARG();
810 if (get_u32(&filter.xpinfo.priority, *argv, 0))
811 invarg("\"PRIORITY\" is invalid", *argv);
812
813 filter.priority_mask = XFRM_FILTER_MASK_FULL;
814
c1fa2253
MN		 815 } else if (strcmp(*argv, "flag") == 0) {
816 NEXT_ARG();
817 xfrm_policy_flag_parse(&filter.xpinfo.flags, &argc,
818 &argv);
819
820 filter.policy_flags_mask = XFRM_FILTER_MASK_FULL;
821
7809c616 822 } else {
823 if (selp)
824 invarg("unknown", *argv);
825 selp = *argv;
826
827 xfrm_selector_parse(&filter.xpinfo.sel, &argc, &argv);
828 if (preferred_family == AF_UNSPEC)
829 preferred_family = filter.xpinfo.sel.family;
830
831 }
c7699875 832
833 argc--; argv++;
834 }
835
836 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
837 exit(1);
838
9bec1a43 839 if (deleteall) {
c7699875 840 struct xfrm_buffer xb;
9bec1a43 841 char buf[NLMSG_DELETEALL_BUF_SIZE];
c7699875 842 int i;
843
844 xb.buf = buf;
845 xb.size = sizeof(buf);
846 xb.rth = &rth;
847
848 for (i = 0; ; i++) {
849 xb.offset = 0;
850 xb.nlmsg_count = 0;
851
852 if (show_stats > 1)
9bec1a43 853 fprintf(stderr, "Delete-all round = %d\n", i);
c7699875 854
855 if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETPOLICY) < 0) {
856 perror("Cannot send dump request");
857 exit(1);
858 }
859
860 if (rtnl_dump_filter(&rth, xfrm_policy_keep, &xb, NULL, NULL) < 0) {
9bec1a43 861 fprintf(stderr, "Delete-all terminated\n");
c7699875 862 exit(1);
863 }
864 if (xb.nlmsg_count == 0) {
865 if (show_stats > 1)
9bec1a43 866 fprintf(stderr, "Delete-all completed\n");
c7699875 867 break;
868 }
869
f31a37f7 870 if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) {
1fb0a998 871 perror("Failed to send delete-all request");
c7699875 872 exit(1);
873 }
874 if (show_stats > 1)
9bec1a43 875 fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count);
c7699875 876
877 xb.offset = 0;
878 xb.nlmsg_count = 0;
879 }
880 } else {
881 if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETPOLICY) < 0) {
882 perror("Cannot send dump request");
883 exit(1);
884 }
885
886 if (rtnl_dump_filter(&rth, xfrm_policy_print, stdout, NULL, NULL) < 0) {
887 fprintf(stderr, "Dump terminated\n");
888 exit(1);
889 }
890 }
891
892 rtnl_close(&rth);
893
894 exit(0);
895}
896
f90c4f4e 897int print_spdinfo( struct nlmsghdr *n, void *arg)
898{
899 FILE *fp = (FILE*)arg;
900 __u32 *f = NLMSG_DATA(n);
901 struct rtattr * tb[XFRMA_SPD_MAX+1];
902 struct rtattr * rta;
f90c4f4e 903
904 int len = n->nlmsg_len;
905
906 len -= NLMSG_LENGTH(sizeof(__u32));
907 if (len < 0) {
908 fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
909 return -1;
910 }
911
912 rta = XFRMSAPD_RTA(f);
913 parse_rtattr(tb, XFRMA_SPD_MAX, rta, len);
914
915 fprintf(fp,"\t SPD");
bdf9e86d
SH		 916 if (tb[XFRMA_SPD_INFO]) {
917 struct xfrmu_spdinfo *si;
918
919 if (RTA_PAYLOAD(tb[XFRMA_SPD_INFO]) < sizeof(*si)) {
f90c4f4e 920 fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
921 return -1;
922 }
bdf9e86d 923 si = RTA_DATA(tb[XFRMA_SPD_INFO]);
f90c4f4e 924 fprintf(fp," IN %d", si->incnt);
925 fprintf(fp," OUT %d", si->outcnt);
926 fprintf(fp," FWD %d", si->fwdcnt);
927
928 if (show_stats) {
929 fprintf(fp," (Sock:");
930 fprintf(fp," IN %d", si->inscnt);
931 fprintf(fp," OUT %d", si->outscnt);
932 fprintf(fp," FWD %d", si->fwdscnt);
933 fprintf(fp,")");
934 }
935
936 fprintf(fp,"\n");
937 }
938 if (show_stats > 1) {
bdf9e86d
SH		 939 struct xfrmu_spdhinfo *sh;
940
941 if (tb[XFRMA_SPD_HINFO]) {
942 if (RTA_PAYLOAD(tb[XFRMA_SPD_HINFO]) < sizeof(*sh)) {
f90c4f4e 943 fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
944 return -1;
945 }
bdf9e86d 946 sh = RTA_DATA(tb[XFRMA_SPD_HINFO]);
f90c4f4e 947 fprintf(fp,"\t SPD buckets:");
948 fprintf(fp," count %d", sh->spdhcnt);
949 fprintf(fp," Max %d", sh->spdhmcnt);
950 }
951 }
952 fprintf(fp,"\n");
953
954 return 0;
955}
956
957static int xfrm_spd_getinfo(int argc, char **argv)
958{
959 struct rtnl_handle rth;
960 struct {
961 struct nlmsghdr n;
962 __u32 flags;
963 char ans[128];
964 } req;
965
966 memset(&req, 0, sizeof(req));
967
968 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(__u32));
969 req.n.nlmsg_flags = NLM_F_REQUEST;
970 req.n.nlmsg_type = XFRM_MSG_GETSPDINFO;
971 req.flags = 0XFFFFFFFF;
972
973 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
974 exit(1);
975
976 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0)
977 exit(2);
978
979 print_spdinfo(&req.n, (void*)stdout);
980
981 rtnl_close(&rth);
982
983 return 0;
984}
985
972938e9 986static int xfrm_policy_flush(int argc, char **argv)
bd641cd6 987{
988 struct rtnl_handle rth;
989 struct {
990 struct nlmsghdr n;
972938e9 991 char buf[RTA_BUF_SIZE];
bd641cd6 992 } req;
972938e9
MN		 993 char *ptypep = NULL;
994 struct xfrm_userpolicy_type upt;
bd641cd6 995
996 memset(&req, 0, sizeof(req));
972938e9 997 memset(&upt, 0, sizeof(upt));
bd641cd6 998
999 req.n.nlmsg_len = NLMSG_LENGTH(0); /* nlmsg data is nothing */
1000 req.n.nlmsg_flags = NLM_F_REQUEST;
1001 req.n.nlmsg_type = XFRM_MSG_FLUSHPOLICY;
1002
972938e9
MN		 1003 while (argc > 0) {
1004 if (strcmp(*argv, "ptype") == 0) {
1005 if (ptypep)
1006 duparg("ptype", *argv);
1007 ptypep = *argv;
1008
1009 NEXT_ARG();
1010 xfrm_policy_ptype_parse(&upt.type, &argc, &argv);
972938e9
MN		 1011 } else
1012 invarg("unknown", *argv);
1013
1014 argc--; argv++;
1015 }
1016
1017 if (ptypep) {
1018 addattr_l(&req.n, sizeof(req), XFRMA_POLICY_TYPE,
1019 (void *)&upt, sizeof(upt));
1020 }
1021
bd641cd6 1022 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1023 exit(1);
1024
1025 if (show_stats > 1)
9bec1a43 1026 fprintf(stderr, "Flush policy\n");
bd641cd6 1027
1028 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
1029 exit(2);
1030
1031 rtnl_close(&rth);
1032
1033 return 0;
1034}
1035
c7699875 1036int do_xfrm_policy(int argc, char **argv)
1037{
1038 if (argc < 1)
9bec1a43 1039 return xfrm_policy_list_or_deleteall(0, NULL, 0);
c7699875 1040
1041 if (matches(*argv, "add") == 0)
1042 return xfrm_policy_modify(XFRM_MSG_NEWPOLICY, 0,
1043 argc-1, argv+1);
1044 if (matches(*argv, "update") == 0)
1045 return xfrm_policy_modify(XFRM_MSG_UPDPOLICY, 0,
1046 argc-1, argv+1);
9bec1a43 1047 if (matches(*argv, "delete") == 0)
c7699875 1048 return xfrm_policy_delete(argc-1, argv+1);
9bec1a43
SH		 1049 if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0)
1050 return xfrm_policy_list_or_deleteall(argc-1, argv+1, 1);
c7699875 1051 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1052 || matches(*argv, "lst") == 0)
9bec1a43 1053 return xfrm_policy_list_or_deleteall(argc-1, argv+1, 0);
c7699875 1054 if (matches(*argv, "get") == 0)
1055 return xfrm_policy_get(argc-1, argv+1);
9bec1a43 1056 if (matches(*argv, "flush") == 0)
972938e9 1057 return xfrm_policy_flush(argc-1, argv+1);
f90c4f4e 1058 if (matches(*argv, "count") == 0)
1059 return xfrm_spd_getinfo(argc, argv);
c7699875 1060 if (matches(*argv, "help") == 0)
1061 usage();
1062 fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm policy help\".\n", *argv);
1063 exit(-1);
1064}
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