ip/ipxfrm.c

   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, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 /*
  21  * based on ip.c, 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 <sys/types.h>
  32 #include <sys/socket.h>
  33 #include <time.h>
  34 #include <netdb.h>
  35 #include <linux/netlink.h>
  36 #include <linux/rtnetlink.h>
  37 #include <linux/xfrm.h>
  38
  39 #include "utils.h"
  40 #include "xfrm.h"
  41
  42 #define STRBUF_SIZE     (128)
  43 #define STRBUF_CAT(buf, str) \
  44         do { \
  45                 int rest = sizeof(buf) - 1 - strlen(buf); \
  46                 if (rest > 0) { \
  47                         int len = strlen(str); \
  48                         if (len > rest) \
  49                                 len = rest; \
  50                         strncat(buf, str, len); \
  51                         buf[sizeof(buf) - 1] = '\0'; \
  52                 } \
  53         } while(0);
  54
  55 struct xfrm_filter filter;
  56
  57 static void usage(void) __attribute__((noreturn));
  58
  59 static void usage(void)
  60 {
  61         fprintf(stderr,
  62                 "Usage: ip xfrm XFRM_OBJECT { COMMAND | help }\n"
  63                 "where  XFRM_OBJECT := { state | policy | monitor }\n");
  64         exit(-1);
  65 }
  66
  67 /* This is based on utils.c(inet_addr_match) */
  68 int xfrm_addr_match(xfrm_address_t *x1, xfrm_address_t *x2, int bits)
  69 {
  70         __u32 *a1 = (__u32 *)x1;
  71         __u32 *a2 = (__u32 *)x2;
  72         int words = bits >> 0x05;
  73
  74         bits &= 0x1f;
  75
  76         if (words)
  77                 if (memcmp(a1, a2, words << 2))
  78                         return -1;
  79
  80         if (bits) {
  81                 __u32 w1, w2;
  82                 __u32 mask;
  83
  84                 w1 = a1[words];
  85                 w2 = a2[words];
  86
  87                 mask = htonl((0xffffffff) << (0x20 - bits));
  88
  89                 if ((w1 ^ w2) & mask)
  90                         return 1;
  91         }
  92
  93         return 0;
  94 }
  95
  96 int xfrm_xfrmproto_is_ipsec(__u8 proto)
  97 {
  98         return (proto ==  IPPROTO_ESP ||
  99                 proto ==  IPPROTO_AH  ||
 100                 proto ==  IPPROTO_COMP);
 101 }
 102
 103 int xfrm_xfrmproto_is_ro(__u8 proto)
 104 {
 105         return (proto ==  IPPROTO_ROUTING ||
 106                 proto ==  IPPROTO_DSTOPTS);
 107 }
 108
 109 struct typeent {
 110         const char *t_name;
 111         int t_type;
 112 };
 113
 114 static const struct typeent xfrmproto_types[]= {
 115         { "esp", IPPROTO_ESP }, { "ah", IPPROTO_AH }, { "comp", IPPROTO_COMP },
 116         { "route2", IPPROTO_ROUTING }, { "hao", IPPROTO_DSTOPTS },
 117         { "ipsec-any", IPSEC_PROTO_ANY },
 118         { NULL, -1 }
 119 };
 120
 121 int xfrm_xfrmproto_getbyname(char *name)
 122 {
 123         int i;
 124
 125         for (i = 0; ; i++) {
 126                 const struct typeent *t = &xfrmproto_types[i];
 127                 if (!t->t_name || t->t_type == -1)
 128                         break;
 129
 130                 if (strcmp(t->t_name, name) == 0)
 131                         return t->t_type;
 132         }
 133
 134         return -1;
 135 }
 136
 137 const char *strxf_xfrmproto(__u8 proto)
 138 {
 139         static char str[16];
 140         int i;
 141
 142         for (i = 0; ; i++) {
 143                 const struct typeent *t = &xfrmproto_types[i];
 144                 if (!t->t_name || t->t_type == -1)
 145                         break;
 146
 147                 if (t->t_type == proto)
 148                         return t->t_name;
 149         }
 150
 151         sprintf(str, "%u", proto);
 152         return str;
 153 }
 154
 155 static const struct typeent algo_types[]= {
 156         { "enc", XFRMA_ALG_CRYPT }, { "auth", XFRMA_ALG_AUTH },
 157         { "comp", XFRMA_ALG_COMP }, { "aead", XFRMA_ALG_AEAD },
 158         { NULL, -1 }
 159 };
 160
 161 int xfrm_algotype_getbyname(char *name)
 162 {
 163         int i;
 164
 165         for (i = 0; ; i++) {
 166                 const struct typeent *t = &algo_types[i];
 167                 if (!t->t_name || t->t_type == -1)
 168                         break;
 169
 170                 if (strcmp(t->t_name, name) == 0)
 171                         return t->t_type;
 172         }
 173
 174         return -1;
 175 }
 176
 177 const char *strxf_algotype(int type)
 178 {
 179         static char str[32];
 180         int i;
 181
 182         for (i = 0; ; i++) {
 183                 const struct typeent *t = &algo_types[i];
 184                 if (!t->t_name || t->t_type == -1)
 185                         break;
 186
 187                 if (t->t_type == type)
 188                         return t->t_name;
 189         }
 190
 191         sprintf(str, "%d", type);
 192         return str;
 193 }
 194
 195 const char *strxf_mask8(__u8 mask)
 196 {
 197         static char str[16];
 198         const int sn = sizeof(mask) * 8 - 1;
 199         __u8 b;
 200         int i = 0;
 201
 202         for (b = (1 << sn); b > 0; b >>= 1)
 203                 str[i++] = ((b & mask) ? '1' : '0');
 204         str[i] = '\0';
 205
 206         return str;
 207 }
 208
 209 const char *strxf_mask32(__u32 mask)
 210 {
 211         static char str[16];
 212
 213         sprintf(str, "%.8x", mask);
 214
 215         return str;
 216 }
 217
 218 const char *strxf_share(__u8 share)
 219 {
 220         static char str[32];
 221
 222         switch (share) {
 223         case XFRM_SHARE_ANY:
 224                 strcpy(str, "any");
 225                 break;
 226         case XFRM_SHARE_SESSION:
 227                 strcpy(str, "session");
 228                 break;
 229         case XFRM_SHARE_USER:
 230                 strcpy(str, "user");
 231                 break;
 232         case XFRM_SHARE_UNIQUE:
 233                 strcpy(str, "unique");
 234                 break;
 235         default:
 236                 sprintf(str, "%u", share);
 237                 break;
 238         }
 239
 240         return str;
 241 }
 242
 243 const char *strxf_proto(__u8 proto)
 244 {
 245         static char buf[32];
 246         struct protoent *pp;
 247         const char *p;
 248
 249         pp = getprotobynumber(proto);
 250         if (pp)
 251                 p = pp->p_name;
 252         else {
 253                 sprintf(buf, "%u", proto);
 254                 p = buf;
 255         }
 256
 257         return p;
 258 }
 259
 260 const char *strxf_ptype(__u8 ptype)
 261 {
 262         static char str[16];
 263
 264         switch (ptype) {
 265         case XFRM_POLICY_TYPE_MAIN:
 266                 strcpy(str, "main");
 267                 break;
 268         case XFRM_POLICY_TYPE_SUB:
 269                 strcpy(str, "sub");
 270                 break;
 271         default:
 272                 sprintf(str, "%u", ptype);
 273                 break;
 274         }
 275
 276         return str;
 277 }
 278
 279 void xfrm_id_info_print(xfrm_address_t *saddr, struct xfrm_id *id,
 280                         __u8 mode, __u32 reqid, __u16 family, int force_spi,
 281                         FILE *fp, const char *prefix, const char *title)
 282 {
 283         char abuf[256];
 284
 285         if (title)
 286                 fputs(title, fp);
 287
 288         memset(abuf, '\0', sizeof(abuf));
 289         fprintf(fp, "src %s ", rt_addr_n2a(family, sizeof(*saddr),
 290                                            saddr, abuf, sizeof(abuf)));
 291         memset(abuf, '\0', sizeof(abuf));
 292         fprintf(fp, "dst %s", rt_addr_n2a(family, sizeof(id->daddr),
 293                                           &id->daddr, abuf, sizeof(abuf)));
 294         fprintf(fp, "%s", _SL_);
 295
 296         if (prefix)
 297                 fputs(prefix, fp);
 298         fprintf(fp, "\t");
 299
 300         fprintf(fp, "proto %s ", strxf_xfrmproto(id->proto));
 301
 302         if (show_stats > 0 || force_spi || id->spi) {
 303                 __u32 spi = ntohl(id->spi);
 304                 fprintf(fp, "spi 0x%08x", spi);
 305                 if (show_stats > 0)
 306                         fprintf(fp, "(%u)", spi);
 307                 fprintf(fp, " ");
 308         }
 309
 310         fprintf(fp, "reqid %u", reqid);
 311         if (show_stats > 0)
 312                 fprintf(fp, "(0x%08x)", reqid);
 313         fprintf(fp, " ");
 314
 315         fprintf(fp, "mode ");
 316         switch (mode) {
 317         case XFRM_MODE_TRANSPORT:
 318                 fprintf(fp, "transport");
 319                 break;
 320         case XFRM_MODE_TUNNEL:
 321                 fprintf(fp, "tunnel");
 322                 break;
 323         case XFRM_MODE_ROUTEOPTIMIZATION:
 324                 fprintf(fp, "ro");
 325                 break;
 326         case XFRM_MODE_IN_TRIGGER:
 327                 fprintf(fp, "in_trigger");
 328                 break;
 329         case XFRM_MODE_BEET:
 330                 fprintf(fp, "beet");
 331                 break;
 332         default:
 333                 fprintf(fp, "%u", mode);
 334                 break;
 335         }
 336         fprintf(fp, "%s", _SL_);
 337 }
 338
 339 static const char *strxf_limit(__u64 limit)
 340 {
 341         static char str[32];
 342         if (limit == XFRM_INF)
 343                 strcpy(str, "(INF)");
 344         else
 345                 sprintf(str, "%llu", (unsigned long long) limit);
 346
 347         return str;
 348 }
 349
 350 void xfrm_stats_print(struct xfrm_stats *s, FILE *fp, const char *prefix)
 351 {
 352         if (prefix)
 353                 fputs(prefix, fp);
 354         fprintf(fp, "stats:%s", _SL_);
 355
 356         if (prefix)
 357                 fputs(prefix, fp);
 358         fprintf(fp, "  replay-window %u replay %u failed %u%s",
 359                 s->replay_window, s->replay, s->integrity_failed, _SL_);
 360 }
 361
 362 static const char *strxf_time(__u64 time)
 363 {
 364         static char str[32];
 365
 366         if (time == 0)
 367                 strcpy(str, "-");
 368         else {
 369                 time_t t;
 370                 struct tm *tp;
 371
 372                 /* XXX: treat time in the same manner of kernel's
 373                  * net/xfrm/xfrm_{user,state}.c
 374                  */
 375                 t = (long)time;
 376                 tp = localtime(&t);
 377
 378                 strftime(str, sizeof(str), "%Y-%m-%d %T", tp);
 379         }
 380
 381         return str;
 382 }
 383
 384 void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg,
 385                          struct xfrm_lifetime_cur *cur,
 386                          FILE *fp, const char *prefix)
 387 {
 388         if (cfg) {
 389                 if (prefix)
 390                         fputs(prefix, fp);
 391                 fprintf(fp, "lifetime config:%s",_SL_);
 392
 393                 if (prefix)
 394                         fputs(prefix, fp);
 395                 fprintf(fp, "  limit: soft %s(bytes),",
 396                         strxf_limit(cfg->soft_byte_limit));
 397                 fprintf(fp, " hard %s(bytes)%s",
 398                         strxf_limit(cfg->hard_byte_limit), _SL_);
 399
 400                 if (prefix)
 401                         fputs(prefix, fp);
 402                 fprintf(fp, "  limit: soft %s(packets),",
 403                         strxf_limit(cfg->soft_packet_limit));
 404                 fprintf(fp, " hard %s(packets)%s",
 405                         strxf_limit(cfg->hard_packet_limit), _SL_);
 406
 407                 if (prefix)
 408                         fputs(prefix, fp);
 409                 fprintf(fp, "  expire add: soft %llu(sec), hard %llu(sec)%s",
 410                         (unsigned long long) cfg->soft_add_expires_seconds,
 411                         (unsigned long long) cfg->hard_add_expires_seconds,
 412                         _SL_);
 413
 414                 if (prefix)
 415                         fputs(prefix, fp);
 416                 fprintf(fp, "  expire use: soft %llu(sec), hard %llu(sec)%s",
 417                         (unsigned long long) cfg->soft_use_expires_seconds,
 418                         (unsigned long long) cfg->hard_use_expires_seconds,
 419                         _SL_);
 420         }
 421         if (cur) {
 422                 if (prefix)
 423                         fputs(prefix, fp);
 424                 fprintf(fp, "lifetime current:%s", _SL_);
 425
 426                 if (prefix)
 427                         fputs(prefix, fp);
 428                 fprintf(fp, "  %llu(bytes), %llu(packets)%s",
 429                         (unsigned long long) cur->bytes,
 430                         (unsigned long long) cur->packets,
 431                          _SL_);
 432
 433                 if (prefix)
 434                         fputs(prefix, fp);
 435                 fprintf(fp, "  add %s ", strxf_time(cur->add_time));
 436                 fprintf(fp, "use %s%s", strxf_time(cur->use_time), _SL_);
 437         }
 438 }
 439
 440 void xfrm_selector_print(struct xfrm_selector *sel, __u16 family,
 441                          FILE *fp, const char *prefix)
 442 {
 443         char abuf[256];
 444         __u16 f;
 445
 446         f = sel->family;
 447         if (f == AF_UNSPEC)
 448                 f = family;
 449         if (f == AF_UNSPEC)
 450                 f = preferred_family;
 451
 452         if (prefix)
 453                 fputs(prefix, fp);
 454
 455         memset(abuf, '\0', sizeof(abuf));
 456         fprintf(fp, "src %s/%u ", rt_addr_n2a(f, sizeof(sel->saddr),
 457                                               &sel->saddr, abuf, sizeof(abuf)),
 458                 sel->prefixlen_s);
 459
 460         memset(abuf, '\0', sizeof(abuf));
 461         fprintf(fp, "dst %s/%u ", rt_addr_n2a(f, sizeof(sel->daddr),
 462                                               &sel->daddr, abuf, sizeof(abuf)),
 463                 sel->prefixlen_d);
 464
 465         if (sel->proto)
 466                 fprintf(fp, "proto %s ", strxf_proto(sel->proto));
 467         switch (sel->proto) {
 468         case IPPROTO_TCP:
 469         case IPPROTO_UDP:
 470         case IPPROTO_SCTP:
 471         case IPPROTO_DCCP:
 472         default: /* XXX */
 473                 if (sel->sport_mask)
 474                         fprintf(fp, "sport %u ", ntohs(sel->sport));
 475                 if (sel->dport_mask)
 476                         fprintf(fp, "dport %u ", ntohs(sel->dport));
 477                 break;
 478         case IPPROTO_ICMP:
 479         case IPPROTO_ICMPV6:
 480                 /* type/code is stored at sport/dport in selector */
 481                 if (sel->sport_mask)
 482                         fprintf(fp, "type %u ", ntohs(sel->sport));
 483                 if (sel->dport_mask)
 484                         fprintf(fp, "code %u ", ntohs(sel->dport));
 485                 break;
 486         case IPPROTO_MH:
 487                 if (sel->sport_mask)
 488                         fprintf(fp, "type %u ", ntohs(sel->sport));
 489                 if (sel->dport_mask) {
 490                         if (show_stats > 0)
 491                                 fprintf(fp, "(dport) 0x%.4x ", sel->dport);
 492                 }
 493                 break;
 494         }
 495
 496         if (sel->ifindex > 0)
 497                 fprintf(fp, "dev %s ", ll_index_to_name(sel->ifindex));
 498
 499         if (show_stats > 0)
 500                 fprintf(fp, "uid %u", sel->user);
 501
 502         fprintf(fp, "%s", _SL_);
 503 }
 504
 505 static void __xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
 506                               FILE *fp, const char *prefix, int newline)
 507 {
 508         int keylen;
 509         int i;
 510
 511         if (prefix)
 512                 fputs(prefix, fp);
 513
 514         fprintf(fp, "%s ", strxf_algotype(type));
 515
 516         if (len < sizeof(*algo)) {
 517                 fprintf(fp, "(ERROR truncated)");
 518                 goto fin;
 519         }
 520         len -= sizeof(*algo);
 521
 522         fprintf(fp, "%s ", algo->alg_name);
 523
 524         keylen = algo->alg_key_len / 8;
 525         if (len < keylen) {
 526                 fprintf(fp, "(ERROR truncated)");
 527                 goto fin;
 528         }
 529
 530         fprintf(fp, "0x");
 531         for (i = 0; i < keylen; i ++)
 532                 fprintf(fp, "%.2x", (unsigned char)algo->alg_key[i]);
 533
 534         if (show_stats > 0)
 535                 fprintf(fp, " (%d bits)", algo->alg_key_len);
 536
 537  fin:
 538         if (newline)
 539                 fprintf(fp, "%s", _SL_);
 540 }
 541
 542 static inline void xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
 543                                    FILE *fp, const char *prefix)
 544 {
 545         return __xfrm_algo_print(algo, type, len, fp, prefix, 1);
 546 }
 547
 548 static void xfrm_aead_print(struct xfrm_algo_aead *algo, int len,
 549                             FILE *fp, const char *prefix)
 550 {
 551         struct {
 552                 struct xfrm_algo algo;
 553                 char key[algo->alg_key_len / 8];
 554         } base;
 555
 556         memcpy(base.algo.alg_name, algo->alg_name, sizeof(base.algo.alg_name));
 557         base.algo.alg_key_len = algo->alg_key_len;
 558         memcpy(base.algo.alg_key, algo->alg_key, algo->alg_key_len / 8);
 559
 560         __xfrm_algo_print(&base.algo, XFRMA_ALG_AEAD, len, fp, prefix, 0);
 561
 562         fprintf(fp, " %d", algo->alg_icv_len);
 563
 564         fprintf(fp, "%s", _SL_);
 565 }
 566
 567 static void xfrm_tmpl_print(struct xfrm_user_tmpl *tmpls, int len,
 568                             __u16 family, FILE *fp, const char *prefix)
 569 {
 570         int ntmpls = len / sizeof(struct xfrm_user_tmpl);
 571         int i;
 572
 573         if (ntmpls <= 0) {
 574                 if (prefix)
 575                         fputs(prefix, fp);
 576                 fprintf(fp, "(ERROR \"tmpl\" truncated)");
 577                 fprintf(fp, "%s", _SL_);
 578                 return;
 579         }
 580
 581         for (i = 0; i < ntmpls; i++) {
 582                 struct xfrm_user_tmpl *tmpl = &tmpls[i];
 583
 584                 if (prefix)
 585                         fputs(prefix, fp);
 586
 587                 xfrm_id_info_print(&tmpl->saddr, &tmpl->id, tmpl->mode,
 588                                    tmpl->reqid, tmpl->family, 0, fp, prefix, "tmpl ");
 589
 590                 if (show_stats > 0 || tmpl->optional) {
 591                         if (prefix)
 592                                 fputs(prefix, fp);
 593                         fprintf(fp, "\t");
 594                         switch (tmpl->optional) {
 595                         case 0:
 596                                 if (show_stats > 0)
 597                                         fprintf(fp, "level required ");
 598                                 break;
 599                         case 1:
 600                                 fprintf(fp, "level use ");
 601                                 break;
 602                         default:
 603                                 fprintf(fp, "level %u ", tmpl->optional);
 604                                 break;
 605                         }
 606
 607                         if (show_stats > 0)
 608                                 fprintf(fp, "share %s ", strxf_share(tmpl->share));
 609
 610                         fprintf(fp, "%s", _SL_);
 611                 }
 612
 613                 if (show_stats > 0) {
 614                         if (prefix)
 615                                 fputs(prefix, fp);
 616                         fprintf(fp, "\t");
 617                         fprintf(fp, "%s-mask %s ",
 618                                 strxf_algotype(XFRMA_ALG_CRYPT),
 619                                 strxf_mask32(tmpl->ealgos));
 620                         fprintf(fp, "%s-mask %s ",
 621                                 strxf_algotype(XFRMA_ALG_AUTH),
 622                                 strxf_mask32(tmpl->aalgos));
 623                         fprintf(fp, "%s-mask %s",
 624                                 strxf_algotype(XFRMA_ALG_COMP),
 625                                 strxf_mask32(tmpl->calgos));
 626
 627                         fprintf(fp, "%s", _SL_);
 628                 }
 629         }
 630 }
 631
 632 int xfrm_parse_mark(struct xfrm_mark *mark, int *argcp, char ***argvp)
 633 {
 634         int argc = *argcp;
 635         char **argv = *argvp;
 636
 637         NEXT_ARG();
 638         if (get_u32(&mark->v, *argv, 0)) {
 639                 invarg("Illegal \"mark\" value\n", *argv);
 640         }
 641         if (argc > 1)
 642                 NEXT_ARG();
 643         else { /* last entry on parse line */
 644                 mark->m = 0xffffffff;
 645                 goto done;
 646         }
 647
 648         if (strcmp(*argv, "mask") == 0) {
 649                 NEXT_ARG();
 650                 if (get_u32(&mark->m, *argv, 0)) {
 651                         invarg("Illegal \"mark\" mask\n", *argv);
 652                 }
 653         } else {
 654                 mark->m = 0xffffffff;
 655                 PREV_ARG();
 656         }
 657
 658 done:
 659         *argcp = argc;
 660         *argvp = argv;
 661
 662         return 0;
 663 }
 664
 665 void xfrm_xfrma_print(struct rtattr *tb[], __u16 family,
 666                       FILE *fp, const char *prefix)
 667 {
 668         if (tb[XFRMA_MARK]) {
 669                 struct rtattr *rta = tb[XFRMA_MARK];
 670                 struct xfrm_mark *m = (struct xfrm_mark *) RTA_DATA(rta);
 671                 fprintf(fp, "\tmark %d/0x%x\n", m->v, m->m);
 672         }
 673
 674         if (tb[XFRMA_ALG_AUTH]) {
 675                 struct rtattr *rta = tb[XFRMA_ALG_AUTH];
 676                 xfrm_algo_print((struct xfrm_algo *) RTA_DATA(rta),
 677                                 XFRMA_ALG_AUTH, RTA_PAYLOAD(rta), fp, prefix);
 678         }
 679
 680         if (tb[XFRMA_ALG_AEAD]) {
 681                 struct rtattr *rta = tb[XFRMA_ALG_AEAD];
 682                 xfrm_aead_print((struct xfrm_algo_aead *)RTA_DATA(rta),
 683                                 RTA_PAYLOAD(rta), fp, prefix);
 684         }
 685
 686         if (tb[XFRMA_ALG_CRYPT]) {
 687                 struct rtattr *rta = tb[XFRMA_ALG_CRYPT];
 688                 xfrm_algo_print((struct xfrm_algo *) RTA_DATA(rta),
 689                                 XFRMA_ALG_CRYPT, RTA_PAYLOAD(rta), fp, prefix);
 690         }
 691
 692         if (tb[XFRMA_ALG_COMP]) {
 693                 struct rtattr *rta = tb[XFRMA_ALG_COMP];
 694                 xfrm_algo_print((struct xfrm_algo *) RTA_DATA(rta),
 695                                 XFRMA_ALG_COMP, RTA_PAYLOAD(rta), fp, prefix);
 696         }
 697
 698         if (tb[XFRMA_ENCAP]) {
 699                 struct xfrm_encap_tmpl *e;
 700                 char abuf[256];
 701
 702                 if (prefix)
 703                         fputs(prefix, fp);
 704                 fprintf(fp, "encap ");
 705
 706                 if (RTA_PAYLOAD(tb[XFRMA_ENCAP]) < sizeof(*e)) {
 707                         fprintf(fp, "(ERROR truncated)");
 708                         fprintf(fp, "%s", _SL_);
 709                         return;
 710                 }
 711                 e = (struct xfrm_encap_tmpl *) RTA_DATA(tb[XFRMA_ENCAP]);
 712
 713                 fprintf(fp, "type ");
 714                 switch (e->encap_type) {
 715                 case 1:
 716                         fprintf(fp, "espinudp-nonike ");
 717                         break;
 718                 case 2:
 719                         fprintf(fp, "espinudp ");
 720                         break;
 721                 default:
 722                         fprintf(fp, "%u ", e->encap_type);
 723                         break;
 724                 }
 725                 fprintf(fp, "sport %u ", ntohs(e->encap_sport));
 726                 fprintf(fp, "dport %u ", ntohs(e->encap_dport));
 727
 728                 memset(abuf, '\0', sizeof(abuf));
 729                 fprintf(fp, "addr %s",
 730                         rt_addr_n2a(family, sizeof(e->encap_oa),
 731                                     &e->encap_oa, abuf, sizeof(abuf)));
 732                 fprintf(fp, "%s", _SL_);
 733         }
 734
 735         if (tb[XFRMA_TMPL]) {
 736                 struct rtattr *rta = tb[XFRMA_TMPL];
 737                 xfrm_tmpl_print((struct xfrm_user_tmpl *) RTA_DATA(rta),
 738                                 RTA_PAYLOAD(rta), family, fp, prefix);
 739         }
 740
 741         if (tb[XFRMA_COADDR]) {
 742                 char abuf[256];
 743                 xfrm_address_t *coa;
 744
 745                 if (prefix)
 746                         fputs(prefix, fp);
 747                 fprintf(fp, "coa ");
 748
 749                 coa = (xfrm_address_t *)RTA_DATA(tb[XFRMA_COADDR]);
 750
 751                 if (RTA_PAYLOAD(tb[XFRMA_COADDR]) < sizeof(*coa)) {
 752                         fprintf(fp, "(ERROR truncated)");
 753                         fprintf(fp, "%s", _SL_);
 754                         return;
 755                 }
 756
 757                 memset(abuf, '\0', sizeof(abuf));
 758                 fprintf(fp, "%s",
 759                         rt_addr_n2a(family, sizeof(*coa), coa,
 760                                     abuf, sizeof(abuf)));
 761                 fprintf(fp, "%s", _SL_);
 762         }
 763
 764         if (tb[XFRMA_LASTUSED]) {
 765                 __u64 lastused;
 766
 767                 if (prefix)
 768                         fputs(prefix, fp);
 769                 fprintf(fp, "lastused ");
 770
 771                 if (RTA_PAYLOAD(tb[XFRMA_LASTUSED]) < sizeof(lastused)) {
 772                         fprintf(fp, "(ERROR truncated)");
 773                         fprintf(fp, "%s", _SL_);
 774                         return;
 775                 }
 776
 777                 lastused = *(__u64 *)RTA_DATA(tb[XFRMA_LASTUSED]);
 778
 779                 fprintf(fp, "%s", strxf_time(lastused));
 780                 fprintf(fp, "%s", _SL_);
 781         }
 782
 783 }
 784
 785 static int xfrm_selector_iszero(struct xfrm_selector *s)
 786 {
 787         struct xfrm_selector s0;
 788
 789         memset(&s0, 0, sizeof(s0));
 790
 791         return (memcmp(&s0, s, sizeof(s0)) == 0);
 792 }
 793
 794 void xfrm_state_info_print(struct xfrm_usersa_info *xsinfo,
 795                             struct rtattr *tb[], FILE *fp, const char *prefix,
 796                             const char *title)
 797 {
 798         char buf[STRBUF_SIZE];
 799         int force_spi = xfrm_xfrmproto_is_ipsec(xsinfo->id.proto);
 800
 801         memset(buf, '\0', sizeof(buf));
 802
 803         xfrm_id_info_print(&xsinfo->saddr, &xsinfo->id, xsinfo->mode,
 804                            xsinfo->reqid, xsinfo->family, force_spi, fp,
 805                            prefix, title);
 806
 807         if (prefix)
 808                 STRBUF_CAT(buf, prefix);
 809         STRBUF_CAT(buf, "\t");
 810
 811         fputs(buf, fp);
 812         fprintf(fp, "replay-window %u ", xsinfo->replay_window);
 813         if (show_stats > 0)
 814                 fprintf(fp, "seq 0x%08u ", xsinfo->seq);
 815         if (show_stats > 0 || xsinfo->flags) {
 816                 __u8 flags = xsinfo->flags;
 817
 818                 fprintf(fp, "flag ");
 819                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOECN, "noecn");
 820                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_DECAP_DSCP, "decap-dscp");
 821                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOPMTUDISC, "nopmtudisc");
 822                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_WILDRECV, "wildrecv");
 823                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ICMP, "icmp");
 824                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_AF_UNSPEC, "af-unspec");
 825                 if (flags)
 826                         fprintf(fp, "%x", flags);
 827         }
 828         if (show_stats > 0)
 829                 fprintf(fp, " (0x%s)", strxf_mask8(xsinfo->flags));
 830         fprintf(fp, "%s", _SL_);
 831
 832         xfrm_xfrma_print(tb, xsinfo->family, fp, buf);
 833
 834         if (!xfrm_selector_iszero(&xsinfo->sel)) {
 835                 char sbuf[STRBUF_SIZE];
 836
 837                 memcpy(sbuf, buf, sizeof(sbuf));
 838                 STRBUF_CAT(sbuf, "sel ");
 839
 840                 xfrm_selector_print(&xsinfo->sel, xsinfo->family, fp, sbuf);
 841         }
 842
 843         if (show_stats > 0) {
 844                 xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, buf);
 845                 xfrm_stats_print(&xsinfo->stats, fp, buf);
 846         }
 847 }
 848
 849 void xfrm_policy_info_print(struct xfrm_userpolicy_info *xpinfo,
 850                             struct rtattr *tb[], FILE *fp, const char *prefix,
 851                             const char *title)
 852 {
 853         char buf[STRBUF_SIZE];
 854
 855         memset(buf, '\0', sizeof(buf));
 856
 857         xfrm_selector_print(&xpinfo->sel, preferred_family, fp, title);
 858
 859         if (prefix)
 860                 STRBUF_CAT(buf, prefix);
 861         STRBUF_CAT(buf, "\t");
 862
 863         fputs(buf, fp);
 864         fprintf(fp, "dir ");
 865         switch (xpinfo->dir) {
 866         case XFRM_POLICY_IN:
 867                 fprintf(fp, "in");
 868                 break;
 869         case XFRM_POLICY_OUT:
 870                 fprintf(fp, "out");
 871                 break;
 872         case XFRM_POLICY_FWD:
 873                 fprintf(fp, "fwd");
 874                 break;
 875         default:
 876                 fprintf(fp, "%u", xpinfo->dir);
 877                 break;
 878         }
 879         fprintf(fp, " ");
 880
 881         switch (xpinfo->action) {
 882         case XFRM_POLICY_ALLOW:
 883                 if (show_stats > 0)
 884                         fprintf(fp, "action allow ");
 885                 break;
 886         case XFRM_POLICY_BLOCK:
 887                 fprintf(fp, "action block ");
 888                 break;
 889         default:
 890                 fprintf(fp, "action %u ", xpinfo->action);
 891                 break;
 892         }
 893
 894         if (show_stats)
 895                 fprintf(fp, "index %u ", xpinfo->index);
 896         fprintf(fp, "priority %u ", xpinfo->priority);
 897
 898         if (tb[XFRMA_POLICY_TYPE]) {
 899                 struct xfrm_userpolicy_type *upt;
 900
 901                 fprintf(fp, "ptype ");
 902
 903                 if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt))
 904                         fprintf(fp, "(ERROR truncated)");
 905
 906                 upt = (struct xfrm_userpolicy_type *)RTA_DATA(tb[XFRMA_POLICY_TYPE]);
 907                 fprintf(fp, "%s ", strxf_ptype(upt->type));
 908         }
 909
 910         if (show_stats > 0)
 911                 fprintf(fp, "share %s ", strxf_share(xpinfo->share));
 912
 913         if (show_stats > 0 || xpinfo->flags) {
 914                 __u8 flags = xpinfo->flags;
 915
 916                 fprintf(fp, "flag ");
 917                 XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_LOCALOK, "localok");
 918                 if (flags)
 919                         fprintf(fp, "%x", flags);
 920         }
 921         if (show_stats > 0)
 922                 fprintf(fp, " (0x%s)", strxf_mask8(xpinfo->flags));
 923         fprintf(fp, "%s", _SL_);
 924
 925         if (show_stats > 0)
 926                 xfrm_lifetime_print(&xpinfo->lft, &xpinfo->curlft, fp, buf);
 927
 928         xfrm_xfrma_print(tb, xpinfo->sel.family, fp, buf);
 929 }
 930
 931 int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
 932                   int loose, int *argcp, char ***argvp)
 933 {
 934         int argc = *argcp;
 935         char **argv = *argvp;
 936         inet_prefix dst;
 937         inet_prefix src;
 938
 939         memset(&dst, 0, sizeof(dst));
 940         memset(&src, 0, sizeof(src));
 941
 942         while (1) {
 943                 if (strcmp(*argv, "src") == 0) {
 944                         NEXT_ARG();
 945
 946                         get_prefix(&src, *argv, preferred_family);
 947                         if (src.family == AF_UNSPEC)
 948                                 invarg("\"src\" address family is AF_UNSPEC", *argv);
 949                         if (family)
 950                                 *family = src.family;
 951
 952                         memcpy(saddr, &src.data, sizeof(*saddr));
 953
 954                         filter.id_src_mask = src.bitlen;
 955
 956                 } else if (strcmp(*argv, "dst") == 0) {
 957                         NEXT_ARG();
 958
 959                         get_prefix(&dst, *argv, preferred_family);
 960                         if (dst.family == AF_UNSPEC)
 961                                 invarg("\"dst\" address family is AF_UNSPEC", *argv);
 962                         if (family)
 963                                 *family = dst.family;
 964
 965                         memcpy(&id->daddr, &dst.data, sizeof(id->daddr));
 966
 967                         filter.id_dst_mask = dst.bitlen;
 968
 969                 } else if (strcmp(*argv, "proto") == 0) {
 970                         int ret;
 971
 972                         NEXT_ARG();
 973
 974                         ret = xfrm_xfrmproto_getbyname(*argv);
 975                         if (ret < 0)
 976                                 invarg("\"XFRM_PROTO\" is invalid", *argv);
 977
 978                         id->proto = (__u8)ret;
 979
 980                         filter.id_proto_mask = XFRM_FILTER_MASK_FULL;
 981
 982                 } else if (strcmp(*argv, "spi") == 0) {
 983                         __u32 spi;
 984
 985                         NEXT_ARG();
 986                         if (get_u32(&spi, *argv, 0))
 987                                 invarg("\"SPI\" is invalid", *argv);
 988
 989                         spi = htonl(spi);
 990                         id->spi = spi;
 991
 992                         filter.id_spi_mask = XFRM_FILTER_MASK_FULL;
 993
 994                 } else {
 995                         PREV_ARG(); /* back track */
 996                         break;
 997                 }
 998
 999                 if (!NEXT_ARG_OK())
1000                         break;
1001                 NEXT_ARG();
1002         }
1003
1004         if (src.family && dst.family && (src.family != dst.family))
1005                 invarg("the same address family is required between \"src\" and \"dst\"", *argv);
1006
1007         if (loose == 0 && id->proto == 0)
1008                 missarg("XFRM_PROTO");
1009         if (argc == *argcp)
1010                 missarg("ID");
1011
1012         *argcp = argc;
1013         *argvp = argv;
1014
1015         return 0;
1016 }
1017
1018 int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp)
1019 {
1020         int argc = *argcp;
1021         char **argv = *argvp;
1022
1023         if (matches(*argv, "transport") == 0)
1024                 *mode = XFRM_MODE_TRANSPORT;
1025         else if (matches(*argv, "tunnel") == 0)
1026                 *mode = XFRM_MODE_TUNNEL;
1027         else if (matches(*argv, "ro") == 0)
1028                 *mode = XFRM_MODE_ROUTEOPTIMIZATION;
1029         else if (matches(*argv, "in_trigger") == 0)
1030                 *mode = XFRM_MODE_IN_TRIGGER;
1031         else if (matches(*argv, "beet") == 0)
1032                 *mode = XFRM_MODE_BEET;
1033         else
1034                 invarg("\"MODE\" is invalid", *argv);
1035
1036         *argcp = argc;
1037         *argvp = argv;
1038
1039         return 0;
1040 }
1041
1042 int xfrm_encap_type_parse(__u16 *type, int *argcp, char ***argvp)
1043 {
1044         int argc = *argcp;
1045         char **argv = *argvp;
1046
1047         if (strcmp(*argv, "espinudp-nonike") == 0)
1048                 *type = 1;
1049         else if (strcmp(*argv, "espinudp") == 0)
1050                 *type = 2;
1051         else
1052                 invarg("\"ENCAP-TYPE\" is invalid", *argv);
1053
1054         *argcp = argc;
1055         *argvp = argv;
1056
1057         return 0;
1058 }
1059
1060 /* NOTE: reqid is used by host-byte order */
1061 int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp)
1062 {
1063         int argc = *argcp;
1064         char **argv = *argvp;
1065
1066         if (get_u32(reqid, *argv, 0))
1067                 invarg("\"REQID\" is invalid", *argv);
1068
1069         *argcp = argc;
1070         *argvp = argv;
1071
1072         return 0;
1073 }
1074
1075 static int xfrm_selector_upspec_parse(struct xfrm_selector *sel,
1076                                       int *argcp, char ***argvp)
1077 {
1078         int argc = *argcp;
1079         char **argv = *argvp;
1080         char *sportp = NULL;
1081         char *dportp = NULL;
1082         char *typep = NULL;
1083         char *codep = NULL;
1084
1085         while (1) {
1086                 if (strcmp(*argv, "proto") == 0) {
1087                         __u8 upspec;
1088
1089                         NEXT_ARG();
1090
1091                         if (strcmp(*argv, "any") == 0)
1092                                 upspec = 0;
1093                         else {
1094                                 struct protoent *pp;
1095                                 pp = getprotobyname(*argv);
1096                                 if (pp)
1097                                         upspec = pp->p_proto;
1098                                 else {
1099                                         if (get_u8(&upspec, *argv, 0))
1100                                                 invarg("\"PROTO\" is invalid", *argv);
1101                                 }
1102                         }
1103                         sel->proto = upspec;
1104
1105                         filter.upspec_proto_mask = XFRM_FILTER_MASK_FULL;
1106
1107                 } else if (strcmp(*argv, "sport") == 0) {
1108                         sportp = *argv;
1109
1110                         NEXT_ARG();
1111
1112                         if (get_u16(&sel->sport, *argv, 0))
1113                                 invarg("\"PORT\" is invalid", *argv);
1114                         sel->sport = htons(sel->sport);
1115                         if (sel->sport)
1116                                 sel->sport_mask = ~((__u16)0);
1117
1118                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
1119
1120                 } else if (strcmp(*argv, "dport") == 0) {
1121                         dportp = *argv;
1122
1123                         NEXT_ARG();
1124
1125                         if (get_u16(&sel->dport, *argv, 0))
1126                                 invarg("\"PORT\" is invalid", *argv);
1127                         sel->dport = htons(sel->dport);
1128                         if (sel->dport)
1129                                 sel->dport_mask = ~((__u16)0);
1130
1131                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1132
1133                 } else if (strcmp(*argv, "type") == 0) {
1134                         typep = *argv;
1135
1136                         NEXT_ARG();
1137
1138                         if (get_u16(&sel->sport, *argv, 0) ||
1139                             (sel->sport & ~((__u16)0xff)))
1140                                 invarg("\"type\" value is invalid", *argv);
1141                         sel->sport = htons(sel->sport);
1142                         sel->sport_mask = ~((__u16)0);
1143
1144                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
1145
1146
1147                 } else if (strcmp(*argv, "code") == 0) {
1148                         codep = *argv;
1149
1150                         NEXT_ARG();
1151
1152                         if (get_u16(&sel->dport, *argv, 0) ||
1153                             (sel->dport & ~((__u16)0xff)))
1154                                 invarg("\"code\" value is invalid", *argv);
1155                         sel->dport = htons(sel->dport);
1156                         sel->dport_mask = ~((__u16)0);
1157
1158                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1159
1160                 } else {
1161                         PREV_ARG(); /* back track */
1162                         break;
1163                 }
1164
1165                 if (!NEXT_ARG_OK())
1166                         break;
1167                 NEXT_ARG();
1168         }
1169         if (argc == *argcp)
1170                 missarg("UPSPEC");
1171         if (sportp || dportp) {
1172                 switch (sel->proto) {
1173                 case IPPROTO_TCP:
1174                 case IPPROTO_UDP:
1175                 case IPPROTO_SCTP:
1176                 case IPPROTO_DCCP:
1177                         break;
1178                 default:
1179                         fprintf(stderr, "\"sport\" and \"dport\" are invalid with proto=%s\n", strxf_proto(sel->proto));
1180                         exit(1);
1181                 }
1182         }
1183         if (typep || codep) {
1184                 switch (sel->proto) {
1185                 case IPPROTO_ICMP:
1186                 case IPPROTO_ICMPV6:
1187                 case IPPROTO_MH:
1188                         break;
1189                 default:
1190                         fprintf(stderr, "\"type\" and \"code\" are invalid with proto=%s\n", strxf_proto(sel->proto));
1191                         exit(1);
1192                 }
1193         }
1194
1195         *argcp = argc;
1196         *argvp = argv;
1197
1198         return 0;
1199 }
1200
1201 int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp)
1202 {
1203         int argc = *argcp;
1204         char **argv = *argvp;
1205         inet_prefix dst;
1206         inet_prefix src;
1207         char *upspecp = NULL;
1208
1209         memset(&dst, 0, sizeof(dst));
1210         memset(&src, 0, sizeof(src));
1211
1212         while (1) {
1213                 if (strcmp(*argv, "src") == 0) {
1214                         NEXT_ARG();
1215
1216                         get_prefix(&src, *argv, preferred_family);
1217                         if (src.family == AF_UNSPEC)
1218                                 invarg("\"src\" address family is AF_UNSPEC", *argv);
1219                         sel->family = src.family;
1220
1221                         memcpy(&sel->saddr, &src.data, sizeof(sel->saddr));
1222                         sel->prefixlen_s = src.bitlen;
1223
1224                         filter.sel_src_mask = src.bitlen;
1225
1226                 } else if (strcmp(*argv, "dst") == 0) {
1227                         NEXT_ARG();
1228
1229                         get_prefix(&dst, *argv, preferred_family);
1230                         if (dst.family == AF_UNSPEC)
1231                                 invarg("\"dst\" address family is AF_UNSPEC", *argv);
1232                         sel->family = dst.family;
1233
1234                         memcpy(&sel->daddr, &dst.data, sizeof(sel->daddr));
1235                         sel->prefixlen_d = dst.bitlen;
1236
1237                         filter.sel_dst_mask = dst.bitlen;
1238
1239                 } else if (strcmp(*argv, "dev") == 0) {
1240                         int ifindex;
1241
1242                         NEXT_ARG();
1243
1244                         if (strcmp(*argv, "none") == 0)
1245                                 ifindex = 0;
1246                         else {
1247                                 ifindex = ll_name_to_index(*argv);
1248                                 if (ifindex <= 0)
1249                                         invarg("\"DEV\" is invalid", *argv);
1250                         }
1251                         sel->ifindex = ifindex;
1252
1253                         filter.sel_dev_mask = XFRM_FILTER_MASK_FULL;
1254
1255                 } else {
1256                         if (upspecp) {
1257                                 PREV_ARG(); /* back track */
1258                                 break;
1259                         } else {
1260                                 upspecp = *argv;
1261                                 xfrm_selector_upspec_parse(sel, &argc, &argv);
1262                         }
1263                 }
1264
1265                 if (!NEXT_ARG_OK())
1266                         break;
1267
1268                 NEXT_ARG();
1269         }
1270
1271         if (src.family && dst.family && (src.family != dst.family))
1272                 invarg("the same address family is required between \"src\" and \"dst\"", *argv);
1273
1274         if (argc == *argcp)
1275                 missarg("SELECTOR");
1276
1277         *argcp = argc;
1278         *argvp = argv;
1279
1280         return 0;
1281 }
1282
1283 int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
1284                             int *argcp, char ***argvp)
1285 {
1286         int argc = *argcp;
1287         char **argv = *argvp;
1288         int ret;
1289
1290         if (strcmp(*argv, "time-soft") == 0) {
1291                 NEXT_ARG();
1292                 ret = get_u64(&lft->soft_add_expires_seconds, *argv, 0);
1293                 if (ret)
1294                         invarg("\"time-soft\" value is invalid", *argv);
1295         } else if (strcmp(*argv, "time-hard") == 0) {
1296                 NEXT_ARG();
1297                 ret = get_u64(&lft->hard_add_expires_seconds, *argv, 0);
1298                 if (ret)
1299                         invarg("\"time-hard\" value is invalid", *argv);
1300         } else if (strcmp(*argv, "time-use-soft") == 0) {
1301                 NEXT_ARG();
1302                 ret = get_u64(&lft->soft_use_expires_seconds, *argv, 0);
1303                 if (ret)
1304                         invarg("\"time-use-soft\" value is invalid", *argv);
1305         } else if (strcmp(*argv, "time-use-hard") == 0) {
1306                 NEXT_ARG();
1307                 ret = get_u64(&lft->hard_use_expires_seconds, *argv, 0);
1308                 if (ret)
1309                         invarg("\"time-use-hard\" value is invalid", *argv);
1310         } else if (strcmp(*argv, "byte-soft") == 0) {
1311                 NEXT_ARG();
1312                 ret = get_u64(&lft->soft_byte_limit, *argv, 0);
1313                 if (ret)
1314                         invarg("\"byte-soft\" value is invalid", *argv);
1315         } else if (strcmp(*argv, "byte-hard") == 0) {
1316                 NEXT_ARG();
1317                 ret = get_u64(&lft->hard_byte_limit, *argv, 0);
1318                 if (ret)
1319                         invarg("\"byte-hard\" value is invalid", *argv);
1320         } else if (strcmp(*argv, "packet-soft") == 0) {
1321                 NEXT_ARG();
1322                 ret = get_u64(&lft->soft_packet_limit, *argv, 0);
1323                 if (ret)
1324                         invarg("\"packet-soft\" value is invalid", *argv);
1325         } else if (strcmp(*argv, "packet-hard") == 0) {
1326                 NEXT_ARG();
1327                 ret = get_u64(&lft->hard_packet_limit, *argv, 0);
1328                 if (ret)
1329                         invarg("\"packet-hard\" value is invalid", *argv);
1330         } else
1331                 invarg("\"LIMIT\" is invalid", *argv);
1332
1333         *argcp = argc;
1334         *argvp = argv;
1335
1336         return 0;
1337 }
1338
1339 int do_xfrm(int argc, char **argv)
1340 {
1341         memset(&filter, 0, sizeof(filter));
1342
1343         if (argc < 1)
1344                 usage();
1345
1346         if (matches(*argv, "state") == 0 ||
1347             matches(*argv, "sa") == 0)
1348                 return do_xfrm_state(argc-1, argv+1);
1349         else if (matches(*argv, "policy") == 0)
1350                 return do_xfrm_policy(argc-1, argv+1);
1351         else if (matches(*argv, "monitor") == 0)
1352                 return do_xfrm_monitor(argc-1, argv+1);
1353         else if (matches(*argv, "help") == 0) {
1354                 usage();
1355                 fprintf(stderr, "xfrm Object \"%s\" is unknown.\n", *argv);
1356                 exit(-1);
1357         }
1358         usage();
1359 }