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, see <http://www.gnu.org/licenses>.
  18  */
  19 /*
  20  * based on ip.c, iproute.c
  21  */
  22 /*
  23  * Authors:
  24  *      Masahide NAKAMURA @USAGI
  25  */
  26
  27 #include <alloca.h>
  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
  38 #include "utils.h"
  39 #include "xfrm.h"
  40 #include "ip_common.h"
  41
  42 #define STRBUF_SIZE     (128)
  43
  44 struct xfrm_filter filter;
  45
  46 static void usage(void) __attribute__((noreturn));
  47
  48 static void usage(void)
  49 {
  50         fprintf(stderr,
  51                 "Usage: ip xfrm XFRM-OBJECT { COMMAND | help }\n"
  52                 "where  XFRM-OBJECT := state | policy | monitor\n");
  53         exit(-1);
  54 }
  55
  56 /* This is based on utils.c(inet_addr_match) */
  57 int xfrm_addr_match(xfrm_address_t *x1, xfrm_address_t *x2, int bits)
  58 {
  59         __u32 *a1 = (__u32 *)x1;
  60         __u32 *a2 = (__u32 *)x2;
  61         int words = bits >> 0x05;
  62
  63         bits &= 0x1f;
  64
  65         if (words)
  66                 if (memcmp(a1, a2, words << 2))
  67                         return -1;
  68
  69         if (bits) {
  70                 __u32 w1, w2;
  71                 __u32 mask;
  72
  73                 w1 = a1[words];
  74                 w2 = a2[words];
  75
  76                 mask = htonl((0xffffffff) << (0x20 - bits));
  77
  78                 if ((w1 ^ w2) & mask)
  79                         return 1;
  80         }
  81
  82         return 0;
  83 }
  84
  85 int xfrm_xfrmproto_is_ipsec(__u8 proto)
  86 {
  87         return (proto ==  IPPROTO_ESP ||
  88                 proto ==  IPPROTO_AH  ||
  89                 proto ==  IPPROTO_COMP);
  90 }
  91
  92 int xfrm_xfrmproto_is_ro(__u8 proto)
  93 {
  94         return (proto ==  IPPROTO_ROUTING ||
  95                 proto ==  IPPROTO_DSTOPTS);
  96 }
  97
  98 struct typeent {
  99         const char *t_name;
 100         int t_type;
 101 };
 102
 103 static const struct typeent xfrmproto_types[] = {
 104         { "esp", IPPROTO_ESP }, { "ah", IPPROTO_AH }, { "comp", IPPROTO_COMP },
 105         { "route2", IPPROTO_ROUTING }, { "hao", IPPROTO_DSTOPTS },
 106         { "ipsec-any", IPSEC_PROTO_ANY },
 107         { NULL, -1 }
 108 };
 109
 110 int xfrm_xfrmproto_getbyname(char *name)
 111 {
 112         int i;
 113
 114         for (i = 0; ; i++) {
 115                 const struct typeent *t = &xfrmproto_types[i];
 116
 117                 if (!t->t_name || t->t_type == -1)
 118                         break;
 119
 120                 if (strcmp(t->t_name, name) == 0)
 121                         return t->t_type;
 122         }
 123
 124         return -1;
 125 }
 126
 127 const char *strxf_xfrmproto(__u8 proto)
 128 {
 129         static char str[16];
 130         int i;
 131
 132         for (i = 0; ; i++) {
 133                 const struct typeent *t = &xfrmproto_types[i];
 134
 135                 if (!t->t_name || t->t_type == -1)
 136                         break;
 137
 138                 if (t->t_type == proto)
 139                         return t->t_name;
 140         }
 141
 142         sprintf(str, "%u", proto);
 143         return str;
 144 }
 145
 146 static const struct typeent algo_types[] = {
 147         { "enc", XFRMA_ALG_CRYPT }, { "auth", XFRMA_ALG_AUTH },
 148         { "comp", XFRMA_ALG_COMP }, { "aead", XFRMA_ALG_AEAD },
 149         { "auth-trunc", XFRMA_ALG_AUTH_TRUNC },
 150         { NULL, -1 }
 151 };
 152
 153 int xfrm_algotype_getbyname(char *name)
 154 {
 155         int i;
 156
 157         for (i = 0; ; i++) {
 158                 const struct typeent *t = &algo_types[i];
 159
 160                 if (!t->t_name || t->t_type == -1)
 161                         break;
 162
 163                 if (strcmp(t->t_name, name) == 0)
 164                         return t->t_type;
 165         }
 166
 167         return -1;
 168 }
 169
 170 const char *strxf_algotype(int type)
 171 {
 172         static char str[32];
 173         int i;
 174
 175         for (i = 0; ; i++) {
 176                 const struct typeent *t = &algo_types[i];
 177
 178                 if (!t->t_name || t->t_type == -1)
 179                         break;
 180
 181                 if (t->t_type == type)
 182                         return t->t_name;
 183         }
 184
 185         sprintf(str, "%d", type);
 186         return str;
 187 }
 188
 189 const char *strxf_mask8(__u8 mask)
 190 {
 191         static char str[16];
 192         const int sn = sizeof(mask) * 8 - 1;
 193         __u8 b;
 194         int i = 0;
 195
 196         for (b = (1 << sn); b > 0; b >>= 1)
 197                 str[i++] = ((b & mask) ? '1' : '0');
 198         str[i] = '\0';
 199
 200         return str;
 201 }
 202
 203 const char *strxf_mask32(__u32 mask)
 204 {
 205         static char str[16];
 206
 207         sprintf(str, "%.8x", mask);
 208
 209         return str;
 210 }
 211
 212 const char *strxf_share(__u8 share)
 213 {
 214         static char str[32];
 215
 216         switch (share) {
 217         case XFRM_SHARE_ANY:
 218                 strcpy(str, "any");
 219                 break;
 220         case XFRM_SHARE_SESSION:
 221                 strcpy(str, "session");
 222                 break;
 223         case XFRM_SHARE_USER:
 224                 strcpy(str, "user");
 225                 break;
 226         case XFRM_SHARE_UNIQUE:
 227                 strcpy(str, "unique");
 228                 break;
 229         default:
 230                 sprintf(str, "%u", share);
 231                 break;
 232         }
 233
 234         return str;
 235 }
 236
 237 const char *strxf_proto(__u8 proto)
 238 {
 239         static char buf[32];
 240         struct protoent *pp;
 241         const char *p;
 242
 243         pp = getprotobynumber(proto);
 244         if (pp)
 245                 p = pp->p_name;
 246         else {
 247                 sprintf(buf, "%u", proto);
 248                 p = buf;
 249         }
 250
 251         return p;
 252 }
 253
 254 const char *strxf_ptype(__u8 ptype)
 255 {
 256         static char str[16];
 257
 258         switch (ptype) {
 259         case XFRM_POLICY_TYPE_MAIN:
 260                 strcpy(str, "main");
 261                 break;
 262         case XFRM_POLICY_TYPE_SUB:
 263                 strcpy(str, "sub");
 264                 break;
 265         default:
 266                 sprintf(str, "%u", ptype);
 267                 break;
 268         }
 269
 270         return str;
 271 }
 272
 273 void xfrm_id_info_print(xfrm_address_t *saddr, struct xfrm_id *id,
 274                         __u8 mode, __u32 reqid, __u16 family, int force_spi,
 275                         FILE *fp, const char *prefix, const char *title)
 276 {
 277         if (title)
 278                 fputs(title, fp);
 279
 280         fprintf(fp, "src %s ", rt_addr_n2a(family, sizeof(*saddr), saddr));
 281         fprintf(fp, "dst %s", rt_addr_n2a(family, sizeof(id->daddr), &id->daddr));
 282         fprintf(fp, "%s", _SL_);
 283
 284         if (prefix)
 285                 fputs(prefix, fp);
 286         fprintf(fp, "\t");
 287
 288         fprintf(fp, "proto %s ", strxf_xfrmproto(id->proto));
 289
 290         if (show_stats > 0 || force_spi || id->spi) {
 291                 __u32 spi = ntohl(id->spi);
 292
 293                 fprintf(fp, "spi 0x%08x", spi);
 294                 if (show_stats > 0)
 295                         fprintf(fp, "(%u)", spi);
 296                 fprintf(fp, " ");
 297         }
 298
 299         fprintf(fp, "reqid %u", reqid);
 300         if (show_stats > 0)
 301                 fprintf(fp, "(0x%08x)", reqid);
 302         fprintf(fp, " ");
 303
 304         fprintf(fp, "mode ");
 305         switch (mode) {
 306         case XFRM_MODE_TRANSPORT:
 307                 fprintf(fp, "transport");
 308                 break;
 309         case XFRM_MODE_TUNNEL:
 310                 fprintf(fp, "tunnel");
 311                 break;
 312         case XFRM_MODE_ROUTEOPTIMIZATION:
 313                 fprintf(fp, "ro");
 314                 break;
 315         case XFRM_MODE_IN_TRIGGER:
 316                 fprintf(fp, "in_trigger");
 317                 break;
 318         case XFRM_MODE_BEET:
 319                 fprintf(fp, "beet");
 320                 break;
 321         default:
 322                 fprintf(fp, "%u", mode);
 323                 break;
 324         }
 325         fprintf(fp, "%s", _SL_);
 326 }
 327
 328 static const char *strxf_limit(__u64 limit)
 329 {
 330         static char str[32];
 331
 332         if (limit == XFRM_INF)
 333                 strcpy(str, "(INF)");
 334         else
 335                 sprintf(str, "%llu", (unsigned long long) limit);
 336
 337         return str;
 338 }
 339
 340 void xfrm_stats_print(struct xfrm_stats *s, FILE *fp, const char *prefix)
 341 {
 342         if (prefix)
 343                 fputs(prefix, fp);
 344         fprintf(fp, "stats:%s", _SL_);
 345
 346         if (prefix)
 347                 fputs(prefix, fp);
 348         fprintf(fp, "  replay-window %u replay %u failed %u%s",
 349                 s->replay_window, s->replay, s->integrity_failed, _SL_);
 350 }
 351
 352 static const char *strxf_time(__u64 time)
 353 {
 354         static char str[32];
 355
 356         if (time == 0)
 357                 strcpy(str, "-");
 358         else {
 359                 time_t t;
 360                 struct tm *tp;
 361
 362                 /* XXX: treat time in the same manner of kernel's
 363                  * net/xfrm/xfrm_{user,state}.c
 364                  */
 365                 t = (long)time;
 366                 tp = localtime(&t);
 367
 368                 strftime(str, sizeof(str), "%Y-%m-%d %T", tp);
 369         }
 370
 371         return str;
 372 }
 373
 374 void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg,
 375                          struct xfrm_lifetime_cur *cur,
 376                          FILE *fp, const char *prefix)
 377 {
 378         if (cfg) {
 379                 if (prefix)
 380                         fputs(prefix, fp);
 381                 fprintf(fp, "lifetime config:%s", _SL_);
 382
 383                 if (prefix)
 384                         fputs(prefix, fp);
 385                 fprintf(fp, "  limit: soft %s(bytes),",
 386                         strxf_limit(cfg->soft_byte_limit));
 387                 fprintf(fp, " hard %s(bytes)%s",
 388                         strxf_limit(cfg->hard_byte_limit), _SL_);
 389
 390                 if (prefix)
 391                         fputs(prefix, fp);
 392                 fprintf(fp, "  limit: soft %s(packets),",
 393                         strxf_limit(cfg->soft_packet_limit));
 394                 fprintf(fp, " hard %s(packets)%s",
 395                         strxf_limit(cfg->hard_packet_limit), _SL_);
 396
 397                 if (prefix)
 398                         fputs(prefix, fp);
 399                 fprintf(fp, "  expire add: soft %llu(sec), hard %llu(sec)%s",
 400                         (unsigned long long) cfg->soft_add_expires_seconds,
 401                         (unsigned long long) cfg->hard_add_expires_seconds,
 402                         _SL_);
 403
 404                 if (prefix)
 405                         fputs(prefix, fp);
 406                 fprintf(fp, "  expire use: soft %llu(sec), hard %llu(sec)%s",
 407                         (unsigned long long) cfg->soft_use_expires_seconds,
 408                         (unsigned long long) cfg->hard_use_expires_seconds,
 409                         _SL_);
 410         }
 411         if (cur) {
 412                 if (prefix)
 413                         fputs(prefix, fp);
 414                 fprintf(fp, "lifetime current:%s", _SL_);
 415
 416                 if (prefix)
 417                         fputs(prefix, fp);
 418                 fprintf(fp, "  %llu(bytes), %llu(packets)%s",
 419                         (unsigned long long) cur->bytes,
 420                         (unsigned long long) cur->packets,
 421                          _SL_);
 422
 423                 if (prefix)
 424                         fputs(prefix, fp);
 425                 fprintf(fp, "  add %s ", strxf_time(cur->add_time));
 426                 fprintf(fp, "use %s%s", strxf_time(cur->use_time), _SL_);
 427         }
 428 }
 429
 430 void xfrm_selector_print(struct xfrm_selector *sel, __u16 family,
 431                          FILE *fp, const char *prefix)
 432 {
 433         __u16 f;
 434
 435         f = sel->family;
 436         if (f == AF_UNSPEC)
 437                 f = family;
 438         if (f == AF_UNSPEC)
 439                 f = preferred_family;
 440
 441         if (prefix)
 442                 fputs(prefix, fp);
 443
 444         fprintf(fp, "src %s/%u ",
 445                 rt_addr_n2a(f, sizeof(sel->saddr), &sel->saddr),
 446                 sel->prefixlen_s);
 447
 448         fprintf(fp, "dst %s/%u ",
 449                 rt_addr_n2a(f, sizeof(sel->daddr), &sel->daddr),
 450                 sel->prefixlen_d);
 451
 452         if (sel->proto)
 453                 fprintf(fp, "proto %s ", strxf_proto(sel->proto));
 454         switch (sel->proto) {
 455         case IPPROTO_TCP:
 456         case IPPROTO_UDP:
 457         case IPPROTO_SCTP:
 458         case IPPROTO_DCCP:
 459         default: /* XXX */
 460                 if (sel->sport_mask)
 461                         fprintf(fp, "sport %u ", ntohs(sel->sport));
 462                 if (sel->dport_mask)
 463                         fprintf(fp, "dport %u ", ntohs(sel->dport));
 464                 break;
 465         case IPPROTO_ICMP:
 466         case IPPROTO_ICMPV6:
 467                 /* type/code is stored at sport/dport in selector */
 468                 if (sel->sport_mask)
 469                         fprintf(fp, "type %u ", ntohs(sel->sport));
 470                 if (sel->dport_mask)
 471                         fprintf(fp, "code %u ", ntohs(sel->dport));
 472                 break;
 473         case IPPROTO_GRE:
 474                 if (sel->sport_mask || sel->dport_mask)
 475                         fprintf(fp, "key %u ",
 476                                 (((__u32)ntohs(sel->sport)) << 16) +
 477                                 ntohs(sel->dport));
 478                 break;
 479         case IPPROTO_MH:
 480                 if (sel->sport_mask)
 481                         fprintf(fp, "type %u ", ntohs(sel->sport));
 482                 if (sel->dport_mask) {
 483                         if (show_stats > 0)
 484                                 fprintf(fp, "(dport) 0x%.4x ", sel->dport);
 485                 }
 486                 break;
 487         }
 488
 489         if (sel->ifindex > 0)
 490                 fprintf(fp, "dev %s ", ll_index_to_name(sel->ifindex));
 491
 492         if (show_stats > 0)
 493                 fprintf(fp, "uid %u", sel->user);
 494
 495         fprintf(fp, "%s", _SL_);
 496 }
 497
 498 static void __xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
 499                               FILE *fp, const char *prefix, int newline)
 500 {
 501         int keylen;
 502         int i;
 503
 504         if (prefix)
 505                 fputs(prefix, fp);
 506
 507         fprintf(fp, "%s ", strxf_algotype(type));
 508
 509         if (len < sizeof(*algo)) {
 510                 fprintf(fp, "(ERROR truncated)");
 511                 goto fin;
 512         }
 513         len -= sizeof(*algo);
 514
 515         fprintf(fp, "%s ", algo->alg_name);
 516
 517         keylen = algo->alg_key_len / 8;
 518         if (len < keylen) {
 519                 fprintf(fp, "(ERROR truncated)");
 520                 goto fin;
 521         }
 522
 523         if (keylen > 0) {
 524                 fprintf(fp, "0x");
 525                 for (i = 0; i < keylen; i++)
 526                         fprintf(fp, "%.2x", (unsigned char)algo->alg_key[i]);
 527
 528                 if (show_stats > 0)
 529                         fprintf(fp, " (%d bits)", algo->alg_key_len);
 530         }
 531
 532  fin:
 533         if (newline)
 534                 fprintf(fp, "%s", _SL_);
 535 }
 536
 537 static inline void xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
 538                                    FILE *fp, const char *prefix)
 539 {
 540         return __xfrm_algo_print(algo, type, len, fp, prefix, 1);
 541 }
 542
 543 static void xfrm_aead_print(struct xfrm_algo_aead *algo, int len,
 544                             FILE *fp, const char *prefix)
 545 {
 546         struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8);
 547
 548         memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name));
 549         base_algo->alg_key_len = algo->alg_key_len;
 550         memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8);
 551
 552         __xfrm_algo_print(base_algo, XFRMA_ALG_AEAD, len, fp, prefix, 0);
 553
 554         fprintf(fp, " %d", algo->alg_icv_len);
 555
 556         fprintf(fp, "%s", _SL_);
 557 }
 558
 559 static void xfrm_auth_trunc_print(struct xfrm_algo_auth *algo, int len,
 560                                   FILE *fp, const char *prefix)
 561 {
 562         struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8);
 563
 564         memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name));
 565         base_algo->alg_key_len = algo->alg_key_len;
 566         memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8);
 567
 568         __xfrm_algo_print(base_algo, XFRMA_ALG_AUTH_TRUNC, len, fp, prefix, 0);
 569
 570         fprintf(fp, " %d", algo->alg_trunc_len);
 571
 572         fprintf(fp, "%s", _SL_);
 573 }
 574
 575 static void xfrm_tmpl_print(struct xfrm_user_tmpl *tmpls, int len,
 576                             FILE *fp, const char *prefix)
 577 {
 578         int ntmpls = len / sizeof(struct xfrm_user_tmpl);
 579         int i;
 580
 581         if (ntmpls <= 0) {
 582                 if (prefix)
 583                         fputs(prefix, fp);
 584                 fprintf(fp, "(ERROR \"tmpl\" truncated)");
 585                 fprintf(fp, "%s", _SL_);
 586                 return;
 587         }
 588
 589         for (i = 0; i < ntmpls; i++) {
 590                 struct xfrm_user_tmpl *tmpl = &tmpls[i];
 591
 592                 if (prefix)
 593                         fputs(prefix, fp);
 594
 595                 xfrm_id_info_print(&tmpl->saddr, &tmpl->id, tmpl->mode,
 596                                    tmpl->reqid, tmpl->family, 0, fp, prefix, "tmpl ");
 597
 598                 if (show_stats > 0 || tmpl->optional) {
 599                         if (prefix)
 600                                 fputs(prefix, fp);
 601                         fprintf(fp, "\t");
 602                         switch (tmpl->optional) {
 603                         case 0:
 604                                 if (show_stats > 0)
 605                                         fprintf(fp, "level required ");
 606                                 break;
 607                         case 1:
 608                                 fprintf(fp, "level use ");
 609                                 break;
 610                         default:
 611                                 fprintf(fp, "level %u ", tmpl->optional);
 612                                 break;
 613                         }
 614
 615                         if (show_stats > 0)
 616                                 fprintf(fp, "share %s ", strxf_share(tmpl->share));
 617
 618                         fprintf(fp, "%s", _SL_);
 619                 }
 620
 621                 if (show_stats > 0) {
 622                         if (prefix)
 623                                 fputs(prefix, fp);
 624                         fprintf(fp, "\t");
 625                         fprintf(fp, "%s-mask %s ",
 626                                 strxf_algotype(XFRMA_ALG_CRYPT),
 627                                 strxf_mask32(tmpl->ealgos));
 628                         fprintf(fp, "%s-mask %s ",
 629                                 strxf_algotype(XFRMA_ALG_AUTH),
 630                                 strxf_mask32(tmpl->aalgos));
 631                         fprintf(fp, "%s-mask %s",
 632                                 strxf_algotype(XFRMA_ALG_COMP),
 633                                 strxf_mask32(tmpl->calgos));
 634
 635                         fprintf(fp, "%s", _SL_);
 636                 }
 637         }
 638 }
 639
 640 static void xfrm_output_mark_print(struct rtattr *tb[], FILE *fp)
 641 {
 642         __u32 output_mark = rta_getattr_u32(tb[XFRMA_OUTPUT_MARK]);
 643
 644         fprintf(fp, "output-mark 0x%x", output_mark);
 645 }
 646
 647 int xfrm_parse_mark(struct xfrm_mark *mark, int *argcp, char ***argvp)
 648 {
 649         int argc = *argcp;
 650         char **argv = *argvp;
 651
 652         NEXT_ARG();
 653         if (get_u32(&mark->v, *argv, 0)) {
 654                 invarg("MARK value is invalid\n", *argv);
 655         }
 656         if (argc > 1)
 657                 NEXT_ARG();
 658         else { /* last entry on parse line */
 659                 mark->m = 0xffffffff;
 660                 goto done;
 661         }
 662
 663         if (strcmp(*argv, "mask") == 0) {
 664                 NEXT_ARG();
 665                 if (get_u32(&mark->m, *argv, 0)) {
 666                         invarg("MASK value is invalid\n", *argv);
 667                 }
 668         } else {
 669                 mark->m = 0xffffffff;
 670                 PREV_ARG();
 671         }
 672
 673 done:
 674         *argcp = argc;
 675         *argvp = argv;
 676
 677         return 0;
 678 }
 679
 680 void xfrm_xfrma_print(struct rtattr *tb[], __u16 family,
 681                       FILE *fp, const char *prefix)
 682 {
 683         if (tb[XFRMA_MARK]) {
 684                 struct rtattr *rta = tb[XFRMA_MARK];
 685                 struct xfrm_mark *m = RTA_DATA(rta);
 686
 687                 fprintf(fp, "\tmark %#x/%#x ", m->v, m->m);
 688
 689                 if (tb[XFRMA_OUTPUT_MARK])
 690                         xfrm_output_mark_print(tb, fp);
 691                 fprintf(fp, "%s", _SL_);
 692         } else if (tb[XFRMA_OUTPUT_MARK]) {
 693                 fprintf(fp, "\t");
 694
 695                 xfrm_output_mark_print(tb, fp);
 696                 fprintf(fp, "%s", _SL_);
 697         }
 698
 699         if (tb[XFRMA_ALG_AUTH] && !tb[XFRMA_ALG_AUTH_TRUNC]) {
 700                 struct rtattr *rta = tb[XFRMA_ALG_AUTH];
 701
 702                 xfrm_algo_print(RTA_DATA(rta),
 703                                 XFRMA_ALG_AUTH, RTA_PAYLOAD(rta), fp, prefix);
 704         }
 705
 706         if (tb[XFRMA_ALG_AUTH_TRUNC]) {
 707                 struct rtattr *rta = tb[XFRMA_ALG_AUTH_TRUNC];
 708
 709                 xfrm_auth_trunc_print(RTA_DATA(rta),
 710                                       RTA_PAYLOAD(rta), fp, prefix);
 711         }
 712
 713         if (tb[XFRMA_ALG_AEAD]) {
 714                 struct rtattr *rta = tb[XFRMA_ALG_AEAD];
 715
 716                 xfrm_aead_print(RTA_DATA(rta),
 717                                 RTA_PAYLOAD(rta), fp, prefix);
 718         }
 719
 720         if (tb[XFRMA_ALG_CRYPT]) {
 721                 struct rtattr *rta = tb[XFRMA_ALG_CRYPT];
 722
 723                 xfrm_algo_print(RTA_DATA(rta),
 724                                 XFRMA_ALG_CRYPT, RTA_PAYLOAD(rta), fp, prefix);
 725         }
 726
 727         if (tb[XFRMA_ALG_COMP]) {
 728                 struct rtattr *rta = tb[XFRMA_ALG_COMP];
 729
 730                 xfrm_algo_print(RTA_DATA(rta),
 731                                 XFRMA_ALG_COMP, RTA_PAYLOAD(rta), fp, prefix);
 732         }
 733
 734         if (tb[XFRMA_ENCAP]) {
 735                 struct xfrm_encap_tmpl *e;
 736
 737                 if (prefix)
 738                         fputs(prefix, fp);
 739                 fprintf(fp, "encap ");
 740
 741                 if (RTA_PAYLOAD(tb[XFRMA_ENCAP]) < sizeof(*e)) {
 742                         fprintf(fp, "(ERROR truncated)");
 743                         fprintf(fp, "%s", _SL_);
 744                         return;
 745                 }
 746                 e = RTA_DATA(tb[XFRMA_ENCAP]);
 747
 748                 fprintf(fp, "type ");
 749                 switch (e->encap_type) {
 750                 case 1:
 751                         fprintf(fp, "espinudp-nonike ");
 752                         break;
 753                 case 2:
 754                         fprintf(fp, "espinudp ");
 755                         break;
 756                 default:
 757                         fprintf(fp, "%u ", e->encap_type);
 758                         break;
 759                 }
 760                 fprintf(fp, "sport %u ", ntohs(e->encap_sport));
 761                 fprintf(fp, "dport %u ", ntohs(e->encap_dport));
 762
 763                 fprintf(fp, "addr %s",
 764                         rt_addr_n2a(family, sizeof(e->encap_oa), &e->encap_oa));
 765                 fprintf(fp, "%s", _SL_);
 766         }
 767
 768         if (tb[XFRMA_TMPL]) {
 769                 struct rtattr *rta = tb[XFRMA_TMPL];
 770
 771                 xfrm_tmpl_print(RTA_DATA(rta),
 772                                 RTA_PAYLOAD(rta), fp, prefix);
 773         }
 774
 775         if (tb[XFRMA_COADDR]) {
 776                 const xfrm_address_t *coa;
 777
 778                 if (prefix)
 779                         fputs(prefix, fp);
 780                 fprintf(fp, "coa ");
 781
 782                 coa = RTA_DATA(tb[XFRMA_COADDR]);
 783                 if (RTA_PAYLOAD(tb[XFRMA_COADDR]) < sizeof(*coa)) {
 784                         fprintf(fp, "(ERROR truncated)");
 785                         fprintf(fp, "%s", _SL_);
 786                         return;
 787                 }
 788
 789                 fprintf(fp, "%s",
 790                         rt_addr_n2a(family, sizeof(*coa), coa));
 791                 fprintf(fp, "%s", _SL_);
 792         }
 793
 794         if (tb[XFRMA_LASTUSED]) {
 795                 __u64 lastused;
 796
 797                 if (prefix)
 798                         fputs(prefix, fp);
 799                 fprintf(fp, "lastused ");
 800
 801                 if (RTA_PAYLOAD(tb[XFRMA_LASTUSED]) < sizeof(lastused)) {
 802                         fprintf(fp, "(ERROR truncated)");
 803                         fprintf(fp, "%s", _SL_);
 804                         return;
 805                 }
 806
 807                 lastused = rta_getattr_u64(tb[XFRMA_LASTUSED]);
 808
 809                 fprintf(fp, "%s", strxf_time(lastused));
 810                 fprintf(fp, "%s", _SL_);
 811         }
 812
 813         if (tb[XFRMA_REPLAY_VAL]) {
 814                 struct xfrm_replay_state *replay;
 815
 816                 if (prefix)
 817                         fputs(prefix, fp);
 818                 fprintf(fp, "anti-replay context: ");
 819
 820                 if (RTA_PAYLOAD(tb[XFRMA_REPLAY_VAL]) < sizeof(*replay)) {
 821                         fprintf(fp, "(ERROR truncated)");
 822                         fprintf(fp, "%s", _SL_);
 823                         return;
 824                 }
 825
 826                 replay = RTA_DATA(tb[XFRMA_REPLAY_VAL]);
 827                 fprintf(fp, "seq 0x%x, oseq 0x%x, bitmap 0x%08x",
 828                         replay->seq, replay->oseq, replay->bitmap);
 829                 fprintf(fp, "%s", _SL_);
 830         }
 831
 832         if (tb[XFRMA_REPLAY_ESN_VAL]) {
 833                 struct xfrm_replay_state_esn *replay;
 834                 unsigned int i, j;
 835
 836                 if (prefix)
 837                         fputs(prefix, fp);
 838                 fprintf(fp, "anti-replay esn context:");
 839
 840                 if (RTA_PAYLOAD(tb[XFRMA_REPLAY_ESN_VAL]) < sizeof(*replay)) {
 841                         fprintf(fp, "(ERROR truncated)");
 842                         fprintf(fp, "%s", _SL_);
 843                         return;
 844                 }
 845                 fprintf(fp, "%s", _SL_);
 846
 847                 replay = RTA_DATA(tb[XFRMA_REPLAY_ESN_VAL]);
 848                 if (prefix)
 849                         fputs(prefix, fp);
 850                 fprintf(fp, " seq-hi 0x%x, seq 0x%x, oseq-hi 0x%0x, oseq 0x%0x",
 851                         replay->seq_hi, replay->seq, replay->oseq_hi,
 852                         replay->oseq);
 853                 fprintf(fp, "%s", _SL_);
 854                 if (prefix)
 855                         fputs(prefix, fp);
 856                 fprintf(fp, " replay_window %u, bitmap-length %u",
 857                         replay->replay_window, replay->bmp_len);
 858                 for (i = replay->bmp_len, j = 0; i; i--) {
 859                         if (j++ % 8 == 0) {
 860                                 fprintf(fp, "%s", _SL_);
 861                                 if (prefix)
 862                                         fputs(prefix, fp);
 863                                 fprintf(fp, " ");
 864                         }
 865                         fprintf(fp, "%08x ", replay->bmp[i - 1]);
 866                 }
 867                 fprintf(fp, "%s", _SL_);
 868         }
 869         if (tb[XFRMA_OFFLOAD_DEV]) {
 870                 struct xfrm_user_offload *xuo;
 871
 872                 if (prefix)
 873                         fputs(prefix, fp);
 874                 fprintf(fp, "crypto offload parameters: ");
 875
 876                 if (RTA_PAYLOAD(tb[XFRMA_OFFLOAD_DEV]) < sizeof(*xuo)) {
 877                         fprintf(fp, "(ERROR truncated)");
 878                         fprintf(fp, "%s", _SL_);
 879                         return;
 880                 }
 881
 882                 xuo = (struct xfrm_user_offload *)
 883                         RTA_DATA(tb[XFRMA_OFFLOAD_DEV]);
 884                 fprintf(fp, "dev %s dir %s", ll_index_to_name(xuo->ifindex),
 885                         (xuo->flags & XFRM_OFFLOAD_INBOUND) ? "in" : "out");
 886                 fprintf(fp, "%s", _SL_);
 887         }
 888 }
 889
 890 static int xfrm_selector_iszero(struct xfrm_selector *s)
 891 {
 892         struct xfrm_selector s0 = {};
 893
 894         return (memcmp(&s0, s, sizeof(s0)) == 0);
 895 }
 896
 897 void xfrm_state_info_print(struct xfrm_usersa_info *xsinfo,
 898                             struct rtattr *tb[], FILE *fp, const char *prefix,
 899                             const char *title)
 900 {
 901         char buf[STRBUF_SIZE] = {};
 902         int force_spi = xfrm_xfrmproto_is_ipsec(xsinfo->id.proto);
 903
 904         xfrm_id_info_print(&xsinfo->saddr, &xsinfo->id, xsinfo->mode,
 905                            xsinfo->reqid, xsinfo->family, force_spi, fp,
 906                            prefix, title);
 907
 908         if (prefix)
 909                 strlcat(buf, prefix, sizeof(buf));
 910         strlcat(buf, "\t", sizeof(buf));
 911
 912         fputs(buf, fp);
 913         fprintf(fp, "replay-window %u ", xsinfo->replay_window);
 914         if (show_stats > 0)
 915                 fprintf(fp, "seq 0x%08u ", xsinfo->seq);
 916         if (show_stats > 0 || xsinfo->flags) {
 917                 __u8 flags = xsinfo->flags;
 918
 919                 fprintf(fp, "flag ");
 920                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOECN, "noecn");
 921                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_DECAP_DSCP, "decap-dscp");
 922                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOPMTUDISC, "nopmtudisc");
 923                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_WILDRECV, "wildrecv");
 924                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ICMP, "icmp");
 925                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_AF_UNSPEC, "af-unspec");
 926                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ALIGN4, "align4");
 927                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ESN, "esn");
 928                 if (flags)
 929                         fprintf(fp, "%x", flags);
 930         }
 931         if (show_stats > 0 && tb[XFRMA_SA_EXTRA_FLAGS]) {
 932                 __u32 extra_flags = rta_getattr_u32(tb[XFRMA_SA_EXTRA_FLAGS]);
 933
 934                 fprintf(fp, "extra_flag ");
 935                 XFRM_FLAG_PRINT(fp, extra_flags,
 936                                 XFRM_SA_XFLAG_DONT_ENCAP_DSCP,
 937                                 "dont-encap-dscp");
 938                 if (extra_flags)
 939                         fprintf(fp, "%x", extra_flags);
 940         }
 941         if (show_stats > 0)
 942                 fprintf(fp, " (0x%s)", strxf_mask8(xsinfo->flags));
 943         fprintf(fp, "%s", _SL_);
 944
 945         xfrm_xfrma_print(tb, xsinfo->family, fp, buf);
 946
 947         if (!xfrm_selector_iszero(&xsinfo->sel)) {
 948                 char sbuf[STRBUF_SIZE];
 949
 950                 memcpy(sbuf, buf, sizeof(sbuf));
 951                 strlcat(sbuf, "sel ", sizeof(sbuf));
 952
 953                 xfrm_selector_print(&xsinfo->sel, xsinfo->family, fp, sbuf);
 954         }
 955
 956         if (show_stats > 0) {
 957                 xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, buf);
 958                 xfrm_stats_print(&xsinfo->stats, fp, buf);
 959         }
 960
 961         if (tb[XFRMA_SEC_CTX]) {
 962                 struct xfrm_user_sec_ctx *sctx;
 963
 964                 fprintf(fp, "\tsecurity context ");
 965
 966                 if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
 967                         fprintf(fp, "(ERROR truncated)");
 968
 969                 sctx = RTA_DATA(tb[XFRMA_SEC_CTX]);
 970
 971                 fprintf(fp, "%s %s", (char *)(sctx + 1), _SL_);
 972         }
 973
 974 }
 975
 976 void xfrm_policy_info_print(struct xfrm_userpolicy_info *xpinfo,
 977                             struct rtattr *tb[], FILE *fp, const char *prefix,
 978                             const char *title)
 979 {
 980         char buf[STRBUF_SIZE] = {};
 981
 982         xfrm_selector_print(&xpinfo->sel, preferred_family, fp, title);
 983
 984         if (tb[XFRMA_SEC_CTX]) {
 985                 struct xfrm_user_sec_ctx *sctx;
 986
 987                 fprintf(fp, "\tsecurity context ");
 988
 989                 if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
 990                         fprintf(fp, "(ERROR truncated)");
 991
 992                 sctx = RTA_DATA(tb[XFRMA_SEC_CTX]);
 993
 994                 fprintf(fp, "%s ", (char *)(sctx + 1));
 995                 fprintf(fp, "%s", _SL_);
 996         }
 997
 998         if (prefix)
 999                 strlcat(buf, prefix, sizeof(buf));
1000         strlcat(buf, "\t", sizeof(buf));
1001
1002         fputs(buf, fp);
1003         if (xpinfo->dir >= XFRM_POLICY_MAX) {
1004                 xpinfo->dir -= XFRM_POLICY_MAX;
1005                 fprintf(fp, "socket ");
1006         } else
1007                 fprintf(fp, "dir ");
1008
1009         switch (xpinfo->dir) {
1010         case XFRM_POLICY_IN:
1011                 fprintf(fp, "in");
1012                 break;
1013         case XFRM_POLICY_OUT:
1014                 fprintf(fp, "out");
1015                 break;
1016         case XFRM_POLICY_FWD:
1017                 fprintf(fp, "fwd");
1018                 break;
1019         default:
1020                 fprintf(fp, "%u", xpinfo->dir);
1021                 break;
1022         }
1023         fprintf(fp, " ");
1024
1025         switch (xpinfo->action) {
1026         case XFRM_POLICY_ALLOW:
1027                 if (show_stats > 0)
1028                         fprintf(fp, "action allow ");
1029                 break;
1030         case XFRM_POLICY_BLOCK:
1031                 fprintf(fp, "action block ");
1032                 break;
1033         default:
1034                 fprintf(fp, "action %u ", xpinfo->action);
1035                 break;
1036         }
1037
1038         if (show_stats)
1039                 fprintf(fp, "index %u ", xpinfo->index);
1040         fprintf(fp, "priority %u ", xpinfo->priority);
1041
1042         if (tb[XFRMA_POLICY_TYPE]) {
1043                 struct xfrm_userpolicy_type *upt;
1044
1045                 fprintf(fp, "ptype ");
1046
1047                 if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt))
1048                         fprintf(fp, "(ERROR truncated)");
1049
1050                 upt = RTA_DATA(tb[XFRMA_POLICY_TYPE]);
1051                 fprintf(fp, "%s ", strxf_ptype(upt->type));
1052         }
1053
1054         if (show_stats > 0)
1055                 fprintf(fp, "share %s ", strxf_share(xpinfo->share));
1056
1057         if (show_stats > 0 || xpinfo->flags) {
1058                 __u8 flags = xpinfo->flags;
1059
1060                 fprintf(fp, "flag ");
1061                 XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_LOCALOK, "localok");
1062                 XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_ICMP, "icmp");
1063                 if (flags)
1064                         fprintf(fp, "%x", flags);
1065         }
1066         if (show_stats > 0)
1067                 fprintf(fp, " (0x%s)", strxf_mask8(xpinfo->flags));
1068         fprintf(fp, "%s", _SL_);
1069
1070         if (show_stats > 0)
1071                 xfrm_lifetime_print(&xpinfo->lft, &xpinfo->curlft, fp, buf);
1072
1073         xfrm_xfrma_print(tb, xpinfo->sel.family, fp, buf);
1074 }
1075
1076 int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
1077                   int loose, int *argcp, char ***argvp)
1078 {
1079         int argc = *argcp;
1080         char **argv = *argvp;
1081         inet_prefix dst = {};
1082         inet_prefix src = {};
1083
1084         while (1) {
1085                 if (strcmp(*argv, "src") == 0) {
1086                         NEXT_ARG();
1087
1088                         get_prefix(&src, *argv, preferred_family);
1089                         if (src.family == AF_UNSPEC)
1090                                 invarg("value after \"src\" has an unrecognized address family", *argv);
1091                         if (family)
1092                                 *family = src.family;
1093
1094                         memcpy(saddr, &src.data, sizeof(*saddr));
1095
1096                         filter.id_src_mask = src.bitlen;
1097
1098                 } else if (strcmp(*argv, "dst") == 0) {
1099                         NEXT_ARG();
1100
1101                         get_prefix(&dst, *argv, preferred_family);
1102                         if (dst.family == AF_UNSPEC)
1103                                 invarg("value after \"dst\" has an unrecognized address family", *argv);
1104                         if (family)
1105                                 *family = dst.family;
1106
1107                         memcpy(&id->daddr, &dst.data, sizeof(id->daddr));
1108
1109                         filter.id_dst_mask = dst.bitlen;
1110
1111                 } else if (strcmp(*argv, "proto") == 0) {
1112                         int ret;
1113
1114                         NEXT_ARG();
1115
1116                         ret = xfrm_xfrmproto_getbyname(*argv);
1117                         if (ret < 0)
1118                                 invarg("XFRM-PROTO value is invalid", *argv);
1119
1120                         id->proto = (__u8)ret;
1121
1122                         filter.id_proto_mask = XFRM_FILTER_MASK_FULL;
1123
1124                 } else if (strcmp(*argv, "spi") == 0) {
1125                         NEXT_ARG();
1126                         if (get_be32(&id->spi, *argv, 0))
1127                                 invarg("SPI value is invalid", *argv);
1128
1129                         filter.id_spi_mask = XFRM_FILTER_MASK_FULL;
1130
1131                 } else {
1132                         PREV_ARG(); /* back track */
1133                         break;
1134                 }
1135
1136                 if (!NEXT_ARG_OK())
1137                         break;
1138                 NEXT_ARG();
1139         }
1140
1141         if (src.family && dst.family && (src.family != dst.family))
1142                 invarg("the same address family is required between values after \"src\" and \"dst\"", *argv);
1143
1144         if (id->spi && id->proto) {
1145                 if (xfrm_xfrmproto_is_ro(id->proto)) {
1146                         fprintf(stderr, "\"spi\" is invalid with XFRM-PROTO value \"%s\"\n",
1147                                 strxf_xfrmproto(id->proto));
1148                         exit(1);
1149                 } else if (id->proto == IPPROTO_COMP && ntohl(id->spi) >= 0x10000) {
1150                         fprintf(stderr, "SPI value is too large with XFRM-PROTO value \"%s\"\n",
1151                                 strxf_xfrmproto(id->proto));
1152                         exit(1);
1153                 }
1154         }
1155
1156         if (loose == 0 && id->proto == 0)
1157                 missarg("XFRM-PROTO");
1158         if (argc == *argcp)
1159                 missarg("ID");
1160
1161         *argcp = argc;
1162         *argvp = argv;
1163
1164         return 0;
1165 }
1166
1167 int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp)
1168 {
1169         int argc = *argcp;
1170         char **argv = *argvp;
1171
1172         if (matches(*argv, "transport") == 0)
1173                 *mode = XFRM_MODE_TRANSPORT;
1174         else if (matches(*argv, "tunnel") == 0)
1175                 *mode = XFRM_MODE_TUNNEL;
1176         else if (matches(*argv, "ro") == 0)
1177                 *mode = XFRM_MODE_ROUTEOPTIMIZATION;
1178         else if (matches(*argv, "in_trigger") == 0)
1179                 *mode = XFRM_MODE_IN_TRIGGER;
1180         else if (matches(*argv, "beet") == 0)
1181                 *mode = XFRM_MODE_BEET;
1182         else
1183                 invarg("MODE value is invalid", *argv);
1184
1185         *argcp = argc;
1186         *argvp = argv;
1187
1188         return 0;
1189 }
1190
1191 int xfrm_encap_type_parse(__u16 *type, int *argcp, char ***argvp)
1192 {
1193         int argc = *argcp;
1194         char **argv = *argvp;
1195
1196         if (strcmp(*argv, "espinudp-nonike") == 0)
1197                 *type = 1;
1198         else if (strcmp(*argv, "espinudp") == 0)
1199                 *type = 2;
1200         else
1201                 invarg("ENCAP-TYPE value is invalid", *argv);
1202
1203         *argcp = argc;
1204         *argvp = argv;
1205
1206         return 0;
1207 }
1208
1209 /* NOTE: reqid is used by host-byte order */
1210 int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp)
1211 {
1212         int argc = *argcp;
1213         char **argv = *argvp;
1214
1215         if (get_u32(reqid, *argv, 0))
1216                 invarg("REQID value is invalid", *argv);
1217
1218         *argcp = argc;
1219         *argvp = argv;
1220
1221         return 0;
1222 }
1223
1224 static int xfrm_selector_upspec_parse(struct xfrm_selector *sel,
1225                                       int *argcp, char ***argvp)
1226 {
1227         int argc = *argcp;
1228         char **argv = *argvp;
1229         char *sportp = NULL;
1230         char *dportp = NULL;
1231         char *typep = NULL;
1232         char *codep = NULL;
1233         char *grekey = NULL;
1234
1235         while (1) {
1236                 if (strcmp(*argv, "proto") == 0) {
1237                         __u8 upspec;
1238
1239                         NEXT_ARG();
1240
1241                         if (strcmp(*argv, "any") == 0)
1242                                 upspec = 0;
1243                         else {
1244                                 struct protoent *pp;
1245
1246                                 pp = getprotobyname(*argv);
1247                                 if (pp)
1248                                         upspec = pp->p_proto;
1249                                 else {
1250                                         if (get_u8(&upspec, *argv, 0))
1251                                                 invarg("PROTO value is invalid", *argv);
1252                                 }
1253                         }
1254                         sel->proto = upspec;
1255
1256                         filter.upspec_proto_mask = XFRM_FILTER_MASK_FULL;
1257
1258                 } else if (strcmp(*argv, "sport") == 0) {
1259                         sportp = *argv;
1260
1261                         NEXT_ARG();
1262
1263                         if (get_be16(&sel->sport, *argv, 0))
1264                                 invarg("value after \"sport\" is invalid", *argv);
1265                         if (sel->sport)
1266                                 sel->sport_mask = ~((__u16)0);
1267
1268                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
1269
1270                 } else if (strcmp(*argv, "dport") == 0) {
1271                         dportp = *argv;
1272
1273                         NEXT_ARG();
1274
1275                         if (get_be16(&sel->dport, *argv, 0))
1276                                 invarg("value after \"dport\" is invalid", *argv);
1277                         if (sel->dport)
1278                                 sel->dport_mask = ~((__u16)0);
1279
1280                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1281
1282                 } else if (strcmp(*argv, "type") == 0) {
1283                         typep = *argv;
1284
1285                         NEXT_ARG();
1286
1287                         if (get_u16(&sel->sport, *argv, 0) ||
1288                             (sel->sport & ~((__u16)0xff)))
1289                                 invarg("value after \"type\" is invalid", *argv);
1290                         sel->sport = htons(sel->sport);
1291                         sel->sport_mask = ~((__u16)0);
1292
1293                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
1294
1295
1296                 } else if (strcmp(*argv, "code") == 0) {
1297                         codep = *argv;
1298
1299                         NEXT_ARG();
1300
1301                         if (get_u16(&sel->dport, *argv, 0) ||
1302                             (sel->dport & ~((__u16)0xff)))
1303                                 invarg("value after \"code\" is invalid", *argv);
1304                         sel->dport = htons(sel->dport);
1305                         sel->dport_mask = ~((__u16)0);
1306
1307                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1308
1309                 } else if (strcmp(*argv, "key") == 0) {
1310                         unsigned int uval;
1311
1312                         grekey = *argv;
1313
1314                         NEXT_ARG();
1315
1316                         if (strchr(*argv, '.'))
1317                                 uval = htonl(get_addr32(*argv));
1318                         else {
1319                                 if (get_unsigned(&uval, *argv, 0) < 0) {
1320                                         fprintf(stderr, "value after \"key\" is invalid\n");
1321                                         exit(-1);
1322                                 }
1323                         }
1324
1325                         sel->sport = htons(uval >> 16);
1326                         sel->dport = htons(uval & 0xffff);
1327                         sel->sport_mask = ~((__u16)0);
1328                         sel->dport_mask = ~((__u16)0);
1329
1330                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1331
1332                 } else {
1333                         PREV_ARG(); /* back track */
1334                         break;
1335                 }
1336
1337                 if (!NEXT_ARG_OK())
1338                         break;
1339                 NEXT_ARG();
1340         }
1341         if (argc == *argcp)
1342                 missarg("UPSPEC");
1343         if (sportp || dportp) {
1344                 switch (sel->proto) {
1345                 case IPPROTO_TCP:
1346                 case IPPROTO_UDP:
1347                 case IPPROTO_SCTP:
1348                 case IPPROTO_DCCP:
1349                 case IPPROTO_IP: /* to allow shared SA for different protocols */
1350                         break;
1351                 default:
1352                         fprintf(stderr, "\"sport\" and \"dport\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1353                         exit(1);
1354                 }
1355         }
1356         if (typep || codep) {
1357                 switch (sel->proto) {
1358                 case IPPROTO_ICMP:
1359                 case IPPROTO_ICMPV6:
1360                 case IPPROTO_MH:
1361                         break;
1362                 default:
1363                         fprintf(stderr, "\"type\" and \"code\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1364                         exit(1);
1365                 }
1366         }
1367         if (grekey) {
1368                 switch (sel->proto) {
1369                 case IPPROTO_GRE:
1370                         break;
1371                 default:
1372                         fprintf(stderr, "\"key\" is invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1373                         exit(1);
1374                 }
1375         }
1376
1377         *argcp = argc;
1378         *argvp = argv;
1379
1380         return 0;
1381 }
1382
1383 int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp)
1384 {
1385         int argc = *argcp;
1386         char **argv = *argvp;
1387         inet_prefix dst = {};
1388         inet_prefix src = {};
1389         char *upspecp = NULL;
1390
1391         while (1) {
1392                 if (strcmp(*argv, "src") == 0) {
1393                         NEXT_ARG();
1394
1395                         get_prefix(&src, *argv, preferred_family);
1396                         if (src.family == AF_UNSPEC)
1397                                 invarg("value after \"src\" has an unrecognized address family", *argv);
1398                         sel->family = src.family;
1399
1400                         memcpy(&sel->saddr, &src.data, sizeof(sel->saddr));
1401                         sel->prefixlen_s = src.bitlen;
1402
1403                         filter.sel_src_mask = src.bitlen;
1404
1405                 } else if (strcmp(*argv, "dst") == 0) {
1406                         NEXT_ARG();
1407
1408                         get_prefix(&dst, *argv, preferred_family);
1409                         if (dst.family == AF_UNSPEC)
1410                                 invarg("value after \"dst\" has an unrecognized address family", *argv);
1411                         sel->family = dst.family;
1412
1413                         memcpy(&sel->daddr, &dst.data, sizeof(sel->daddr));
1414                         sel->prefixlen_d = dst.bitlen;
1415
1416                         filter.sel_dst_mask = dst.bitlen;
1417
1418                 } else if (strcmp(*argv, "dev") == 0) {
1419                         int ifindex;
1420
1421                         NEXT_ARG();
1422
1423                         if (strcmp(*argv, "none") == 0)
1424                                 ifindex = 0;
1425                         else {
1426                                 ifindex = ll_name_to_index(*argv);
1427                                 if (ifindex <= 0)
1428                                         invarg("DEV value is invalid", *argv);
1429                         }
1430                         sel->ifindex = ifindex;
1431
1432                         filter.sel_dev_mask = XFRM_FILTER_MASK_FULL;
1433
1434                 } else {
1435                         if (upspecp) {
1436                                 PREV_ARG(); /* back track */
1437                                 break;
1438                         } else {
1439                                 upspecp = *argv;
1440                                 xfrm_selector_upspec_parse(sel, &argc, &argv);
1441                         }
1442                 }
1443
1444                 if (!NEXT_ARG_OK())
1445                         break;
1446
1447                 NEXT_ARG();
1448         }
1449
1450         if (src.family && dst.family && (src.family != dst.family))
1451                 invarg("the same address family is required between values after \"src\" and \"dst\"", *argv);
1452
1453         if (argc == *argcp)
1454                 missarg("SELECTOR");
1455
1456         *argcp = argc;
1457         *argvp = argv;
1458
1459         return 0;
1460 }
1461
1462 int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
1463                             int *argcp, char ***argvp)
1464 {
1465         int argc = *argcp;
1466         char **argv = *argvp;
1467         int ret;
1468
1469         if (strcmp(*argv, "time-soft") == 0) {
1470                 NEXT_ARG();
1471                 ret = get_u64(&lft->soft_add_expires_seconds, *argv, 0);
1472                 if (ret)
1473                         invarg("value after \"time-soft\" is invalid", *argv);
1474         } else if (strcmp(*argv, "time-hard") == 0) {
1475                 NEXT_ARG();
1476                 ret = get_u64(&lft->hard_add_expires_seconds, *argv, 0);
1477                 if (ret)
1478                         invarg("value after \"time-hard\" is invalid", *argv);
1479         } else if (strcmp(*argv, "time-use-soft") == 0) {
1480                 NEXT_ARG();
1481                 ret = get_u64(&lft->soft_use_expires_seconds, *argv, 0);
1482                 if (ret)
1483                         invarg("value after \"time-use-soft\" is invalid", *argv);
1484         } else if (strcmp(*argv, "time-use-hard") == 0) {
1485                 NEXT_ARG();
1486                 ret = get_u64(&lft->hard_use_expires_seconds, *argv, 0);
1487                 if (ret)
1488                         invarg("value after \"time-use-hard\" is invalid", *argv);
1489         } else if (strcmp(*argv, "byte-soft") == 0) {
1490                 NEXT_ARG();
1491                 ret = get_u64(&lft->soft_byte_limit, *argv, 0);
1492                 if (ret)
1493                         invarg("value after \"byte-soft\" is invalid", *argv);
1494         } else if (strcmp(*argv, "byte-hard") == 0) {
1495                 NEXT_ARG();
1496                 ret = get_u64(&lft->hard_byte_limit, *argv, 0);
1497                 if (ret)
1498                         invarg("value after \"byte-hard\" is invalid", *argv);
1499         } else if (strcmp(*argv, "packet-soft") == 0) {
1500                 NEXT_ARG();
1501                 ret = get_u64(&lft->soft_packet_limit, *argv, 0);
1502                 if (ret)
1503                         invarg("value after \"packet-soft\" is invalid", *argv);
1504         } else if (strcmp(*argv, "packet-hard") == 0) {
1505                 NEXT_ARG();
1506                 ret = get_u64(&lft->hard_packet_limit, *argv, 0);
1507                 if (ret)
1508                         invarg("value after \"packet-hard\" is invalid", *argv);
1509         } else
1510                 invarg("LIMIT value is invalid", *argv);
1511
1512         *argcp = argc;
1513         *argvp = argv;
1514
1515         return 0;
1516 }
1517
1518 int do_xfrm(int argc, char **argv)
1519 {
1520         memset(&filter, 0, sizeof(filter));
1521
1522         if (argc < 1)
1523                 usage();
1524
1525         if (matches(*argv, "state") == 0 ||
1526             matches(*argv, "sa") == 0)
1527                 return do_xfrm_state(argc-1, argv+1);
1528         else if (matches(*argv, "policy") == 0)
1529                 return do_xfrm_policy(argc-1, argv+1);
1530         else if (matches(*argv, "monitor") == 0)
1531                 return do_xfrm_monitor(argc-1, argv+1);
1532         else if (matches(*argv, "help") == 0) {
1533                 usage();
1534                 fprintf(stderr, "xfrm Object \"%s\" is unknown.\n", *argv);
1535                 exit(-1);
1536         }
1537         usage();
1538 }