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 static 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 static 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 static 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 static void xfrm_stats_print(struct xfrm_stats *s, FILE *fp,
 341                              const char *prefix)
 342 {
 343         if (prefix)
 344                 fputs(prefix, fp);
 345         fprintf(fp, "stats:%s", _SL_);
 346
 347         if (prefix)
 348                 fputs(prefix, fp);
 349         fprintf(fp, "  replay-window %u replay %u failed %u%s",
 350                 s->replay_window, s->replay, s->integrity_failed, _SL_);
 351 }
 352
 353 static const char *strxf_time(__u64 time)
 354 {
 355         static char str[32];
 356
 357         if (time == 0)
 358                 strcpy(str, "-");
 359         else {
 360                 time_t t;
 361                 struct tm *tp;
 362
 363                 /* XXX: treat time in the same manner of kernel's
 364                  * net/xfrm/xfrm_{user,state}.c
 365                  */
 366                 t = (long)time;
 367                 tp = localtime(&t);
 368
 369                 strftime(str, sizeof(str), "%Y-%m-%d %T", tp);
 370         }
 371
 372         return str;
 373 }
 374
 375 static void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg,
 376                          struct xfrm_lifetime_cur *cur,
 377                          FILE *fp, const char *prefix)
 378 {
 379         if (cfg) {
 380                 if (prefix)
 381                         fputs(prefix, fp);
 382                 fprintf(fp, "lifetime config:%s", _SL_);
 383
 384                 if (prefix)
 385                         fputs(prefix, fp);
 386                 fprintf(fp, "  limit: soft %s(bytes),",
 387                         strxf_limit(cfg->soft_byte_limit));
 388                 fprintf(fp, " hard %s(bytes)%s",
 389                         strxf_limit(cfg->hard_byte_limit), _SL_);
 390
 391                 if (prefix)
 392                         fputs(prefix, fp);
 393                 fprintf(fp, "  limit: soft %s(packets),",
 394                         strxf_limit(cfg->soft_packet_limit));
 395                 fprintf(fp, " hard %s(packets)%s",
 396                         strxf_limit(cfg->hard_packet_limit), _SL_);
 397
 398                 if (prefix)
 399                         fputs(prefix, fp);
 400                 fprintf(fp, "  expire add: soft %llu(sec), hard %llu(sec)%s",
 401                         (unsigned long long) cfg->soft_add_expires_seconds,
 402                         (unsigned long long) cfg->hard_add_expires_seconds,
 403                         _SL_);
 404
 405                 if (prefix)
 406                         fputs(prefix, fp);
 407                 fprintf(fp, "  expire use: soft %llu(sec), hard %llu(sec)%s",
 408                         (unsigned long long) cfg->soft_use_expires_seconds,
 409                         (unsigned long long) cfg->hard_use_expires_seconds,
 410                         _SL_);
 411         }
 412         if (cur) {
 413                 if (prefix)
 414                         fputs(prefix, fp);
 415                 fprintf(fp, "lifetime current:%s", _SL_);
 416
 417                 if (prefix)
 418                         fputs(prefix, fp);
 419                 fprintf(fp, "  %llu(bytes), %llu(packets)%s",
 420                         (unsigned long long) cur->bytes,
 421                         (unsigned long long) cur->packets,
 422                          _SL_);
 423
 424                 if (prefix)
 425                         fputs(prefix, fp);
 426                 fprintf(fp, "  add %s ", strxf_time(cur->add_time));
 427                 fprintf(fp, "use %s%s", strxf_time(cur->use_time), _SL_);
 428         }
 429 }
 430
 431 void xfrm_selector_print(struct xfrm_selector *sel, __u16 family,
 432                          FILE *fp, const char *prefix)
 433 {
 434         __u16 f;
 435
 436         f = sel->family;
 437         if (f == AF_UNSPEC)
 438                 f = family;
 439         if (f == AF_UNSPEC)
 440                 f = preferred_family;
 441
 442         if (prefix)
 443                 fputs(prefix, fp);
 444
 445         fprintf(fp, "src %s/%u ",
 446                 rt_addr_n2a(f, sizeof(sel->saddr), &sel->saddr),
 447                 sel->prefixlen_s);
 448
 449         fprintf(fp, "dst %s/%u ",
 450                 rt_addr_n2a(f, sizeof(sel->daddr), &sel->daddr),
 451                 sel->prefixlen_d);
 452
 453         if (sel->proto)
 454                 fprintf(fp, "proto %s ", strxf_proto(sel->proto));
 455         switch (sel->proto) {
 456         case IPPROTO_TCP:
 457         case IPPROTO_UDP:
 458         case IPPROTO_SCTP:
 459         case IPPROTO_DCCP:
 460         default: /* XXX */
 461                 if (sel->sport_mask)
 462                         fprintf(fp, "sport %u ", ntohs(sel->sport));
 463                 if (sel->dport_mask)
 464                         fprintf(fp, "dport %u ", ntohs(sel->dport));
 465                 break;
 466         case IPPROTO_ICMP:
 467         case IPPROTO_ICMPV6:
 468                 /* type/code is stored at sport/dport in selector */
 469                 if (sel->sport_mask)
 470                         fprintf(fp, "type %u ", ntohs(sel->sport));
 471                 if (sel->dport_mask)
 472                         fprintf(fp, "code %u ", ntohs(sel->dport));
 473                 break;
 474         case IPPROTO_GRE:
 475                 if (sel->sport_mask || sel->dport_mask)
 476                         fprintf(fp, "key %u ",
 477                                 (((__u32)ntohs(sel->sport)) << 16) +
 478                                 ntohs(sel->dport));
 479                 break;
 480         case IPPROTO_MH:
 481                 if (sel->sport_mask)
 482                         fprintf(fp, "type %u ", ntohs(sel->sport));
 483                 if (sel->dport_mask) {
 484                         if (show_stats > 0)
 485                                 fprintf(fp, "(dport) 0x%.4x ", sel->dport);
 486                 }
 487                 break;
 488         }
 489
 490         if (sel->ifindex > 0)
 491                 fprintf(fp, "dev %s ", ll_index_to_name(sel->ifindex));
 492
 493         if (show_stats > 0)
 494                 fprintf(fp, "uid %u", sel->user);
 495
 496         fprintf(fp, "%s", _SL_);
 497 }
 498
 499 static void __xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
 500                               FILE *fp, const char *prefix, int newline)
 501 {
 502         int keylen;
 503         int i;
 504
 505         if (prefix)
 506                 fputs(prefix, fp);
 507
 508         fprintf(fp, "%s ", strxf_algotype(type));
 509
 510         if (len < sizeof(*algo)) {
 511                 fprintf(fp, "(ERROR truncated)");
 512                 goto fin;
 513         }
 514         len -= sizeof(*algo);
 515
 516         fprintf(fp, "%s ", algo->alg_name);
 517
 518         keylen = algo->alg_key_len / 8;
 519         if (len < keylen) {
 520                 fprintf(fp, "(ERROR truncated)");
 521                 goto fin;
 522         }
 523
 524         if (keylen > 0) {
 525                 fprintf(fp, "0x");
 526                 for (i = 0; i < keylen; i++)
 527                         fprintf(fp, "%.2x", (unsigned char)algo->alg_key[i]);
 528
 529                 if (show_stats > 0)
 530                         fprintf(fp, " (%d bits)", algo->alg_key_len);
 531         }
 532
 533  fin:
 534         if (newline)
 535                 fprintf(fp, "%s", _SL_);
 536 }
 537
 538 static inline void xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
 539                                    FILE *fp, const char *prefix)
 540 {
 541         return __xfrm_algo_print(algo, type, len, fp, prefix, 1);
 542 }
 543
 544 static void xfrm_aead_print(struct xfrm_algo_aead *algo, int len,
 545                             FILE *fp, const char *prefix)
 546 {
 547         struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8);
 548
 549         memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name));
 550         base_algo->alg_key_len = algo->alg_key_len;
 551         memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8);
 552
 553         __xfrm_algo_print(base_algo, XFRMA_ALG_AEAD, len, fp, prefix, 0);
 554
 555         fprintf(fp, " %d", algo->alg_icv_len);
 556
 557         fprintf(fp, "%s", _SL_);
 558 }
 559
 560 static void xfrm_auth_trunc_print(struct xfrm_algo_auth *algo, int len,
 561                                   FILE *fp, const char *prefix)
 562 {
 563         struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8);
 564
 565         memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name));
 566         base_algo->alg_key_len = algo->alg_key_len;
 567         memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8);
 568
 569         __xfrm_algo_print(base_algo, XFRMA_ALG_AUTH_TRUNC, len, fp, prefix, 0);
 570
 571         fprintf(fp, " %d", algo->alg_trunc_len);
 572
 573         fprintf(fp, "%s", _SL_);
 574 }
 575
 576 static void xfrm_tmpl_print(struct xfrm_user_tmpl *tmpls, int len,
 577                             FILE *fp, const char *prefix)
 578 {
 579         int ntmpls = len / sizeof(struct xfrm_user_tmpl);
 580         int i;
 581
 582         if (ntmpls <= 0) {
 583                 if (prefix)
 584                         fputs(prefix, fp);
 585                 fprintf(fp, "(ERROR \"tmpl\" truncated)");
 586                 fprintf(fp, "%s", _SL_);
 587                 return;
 588         }
 589
 590         for (i = 0; i < ntmpls; i++) {
 591                 struct xfrm_user_tmpl *tmpl = &tmpls[i];
 592
 593                 if (prefix)
 594                         fputs(prefix, fp);
 595
 596                 xfrm_id_info_print(&tmpl->saddr, &tmpl->id, tmpl->mode,
 597                                    tmpl->reqid, tmpl->family, 0, fp, prefix, "tmpl ");
 598
 599                 if (show_stats > 0 || tmpl->optional) {
 600                         if (prefix)
 601                                 fputs(prefix, fp);
 602                         fprintf(fp, "\t");
 603                         switch (tmpl->optional) {
 604                         case 0:
 605                                 if (show_stats > 0)
 606                                         fprintf(fp, "level required ");
 607                                 break;
 608                         case 1:
 609                                 fprintf(fp, "level use ");
 610                                 break;
 611                         default:
 612                                 fprintf(fp, "level %u ", tmpl->optional);
 613                                 break;
 614                         }
 615
 616                         if (show_stats > 0)
 617                                 fprintf(fp, "share %s ", strxf_share(tmpl->share));
 618
 619                         fprintf(fp, "%s", _SL_);
 620                 }
 621
 622                 if (show_stats > 0) {
 623                         if (prefix)
 624                                 fputs(prefix, fp);
 625                         fprintf(fp, "\t");
 626                         fprintf(fp, "%s-mask %s ",
 627                                 strxf_algotype(XFRMA_ALG_CRYPT),
 628                                 strxf_mask32(tmpl->ealgos));
 629                         fprintf(fp, "%s-mask %s ",
 630                                 strxf_algotype(XFRMA_ALG_AUTH),
 631                                 strxf_mask32(tmpl->aalgos));
 632                         fprintf(fp, "%s-mask %s",
 633                                 strxf_algotype(XFRMA_ALG_COMP),
 634                                 strxf_mask32(tmpl->calgos));
 635
 636                         fprintf(fp, "%s", _SL_);
 637                 }
 638         }
 639 }
 640
 641 static void xfrm_output_mark_print(struct rtattr *tb[], FILE *fp)
 642 {
 643         __u32 output_mark = rta_getattr_u32(tb[XFRMA_OUTPUT_MARK]);
 644
 645         fprintf(fp, "output-mark 0x%x", output_mark);
 646 }
 647
 648 int xfrm_parse_mark(struct xfrm_mark *mark, int *argcp, char ***argvp)
 649 {
 650         int argc = *argcp;
 651         char **argv = *argvp;
 652
 653         NEXT_ARG();
 654         if (get_u32(&mark->v, *argv, 0)) {
 655                 invarg("MARK value is invalid\n", *argv);
 656         }
 657         if (argc > 1)
 658                 NEXT_ARG();
 659         else { /* last entry on parse line */
 660                 mark->m = 0xffffffff;
 661                 goto done;
 662         }
 663
 664         if (strcmp(*argv, "mask") == 0) {
 665                 NEXT_ARG();
 666                 if (get_u32(&mark->m, *argv, 0)) {
 667                         invarg("MASK value is invalid\n", *argv);
 668                 }
 669         } else {
 670                 mark->m = 0xffffffff;
 671                 PREV_ARG();
 672         }
 673
 674 done:
 675         *argcp = argc;
 676         *argvp = argv;
 677
 678         return 0;
 679 }
 680
 681 void xfrm_xfrma_print(struct rtattr *tb[], __u16 family,
 682                       FILE *fp, const char *prefix)
 683 {
 684         if (tb[XFRMA_MARK]) {
 685                 struct rtattr *rta = tb[XFRMA_MARK];
 686                 struct xfrm_mark *m = RTA_DATA(rta);
 687
 688                 fprintf(fp, "\tmark %#x/%#x ", m->v, m->m);
 689
 690                 if (tb[XFRMA_OUTPUT_MARK])
 691                         xfrm_output_mark_print(tb, fp);
 692                 fprintf(fp, "%s", _SL_);
 693         } else if (tb[XFRMA_OUTPUT_MARK]) {
 694                 fprintf(fp, "\t");
 695
 696                 xfrm_output_mark_print(tb, fp);
 697                 fprintf(fp, "%s", _SL_);
 698         }
 699
 700         if (tb[XFRMA_ALG_AUTH] && !tb[XFRMA_ALG_AUTH_TRUNC]) {
 701                 struct rtattr *rta = tb[XFRMA_ALG_AUTH];
 702
 703                 xfrm_algo_print(RTA_DATA(rta),
 704                                 XFRMA_ALG_AUTH, RTA_PAYLOAD(rta), fp, prefix);
 705         }
 706
 707         if (tb[XFRMA_ALG_AUTH_TRUNC]) {
 708                 struct rtattr *rta = tb[XFRMA_ALG_AUTH_TRUNC];
 709
 710                 xfrm_auth_trunc_print(RTA_DATA(rta),
 711                                       RTA_PAYLOAD(rta), fp, prefix);
 712         }
 713
 714         if (tb[XFRMA_ALG_AEAD]) {
 715                 struct rtattr *rta = tb[XFRMA_ALG_AEAD];
 716
 717                 xfrm_aead_print(RTA_DATA(rta),
 718                                 RTA_PAYLOAD(rta), fp, prefix);
 719         }
 720
 721         if (tb[XFRMA_ALG_CRYPT]) {
 722                 struct rtattr *rta = tb[XFRMA_ALG_CRYPT];
 723
 724                 xfrm_algo_print(RTA_DATA(rta),
 725                                 XFRMA_ALG_CRYPT, RTA_PAYLOAD(rta), fp, prefix);
 726         }
 727
 728         if (tb[XFRMA_ALG_COMP]) {
 729                 struct rtattr *rta = tb[XFRMA_ALG_COMP];
 730
 731                 xfrm_algo_print(RTA_DATA(rta),
 732                                 XFRMA_ALG_COMP, RTA_PAYLOAD(rta), fp, prefix);
 733         }
 734
 735         if (tb[XFRMA_ENCAP]) {
 736                 struct xfrm_encap_tmpl *e;
 737
 738                 if (prefix)
 739                         fputs(prefix, fp);
 740                 fprintf(fp, "encap ");
 741
 742                 if (RTA_PAYLOAD(tb[XFRMA_ENCAP]) < sizeof(*e)) {
 743                         fprintf(fp, "(ERROR truncated)");
 744                         fprintf(fp, "%s", _SL_);
 745                         return;
 746                 }
 747                 e = RTA_DATA(tb[XFRMA_ENCAP]);
 748
 749                 fprintf(fp, "type ");
 750                 switch (e->encap_type) {
 751                 case 1:
 752                         fprintf(fp, "espinudp-nonike ");
 753                         break;
 754                 case 2:
 755                         fprintf(fp, "espinudp ");
 756                         break;
 757                 default:
 758                         fprintf(fp, "%u ", e->encap_type);
 759                         break;
 760                 }
 761                 fprintf(fp, "sport %u ", ntohs(e->encap_sport));
 762                 fprintf(fp, "dport %u ", ntohs(e->encap_dport));
 763
 764                 fprintf(fp, "addr %s",
 765                         rt_addr_n2a(family, sizeof(e->encap_oa), &e->encap_oa));
 766                 fprintf(fp, "%s", _SL_);
 767         }
 768
 769         if (tb[XFRMA_TMPL]) {
 770                 struct rtattr *rta = tb[XFRMA_TMPL];
 771
 772                 xfrm_tmpl_print(RTA_DATA(rta),
 773                                 RTA_PAYLOAD(rta), fp, prefix);
 774         }
 775
 776         if (tb[XFRMA_COADDR]) {
 777                 const xfrm_address_t *coa;
 778
 779                 if (prefix)
 780                         fputs(prefix, fp);
 781                 fprintf(fp, "coa ");
 782
 783                 coa = RTA_DATA(tb[XFRMA_COADDR]);
 784                 if (RTA_PAYLOAD(tb[XFRMA_COADDR]) < sizeof(*coa)) {
 785                         fprintf(fp, "(ERROR truncated)");
 786                         fprintf(fp, "%s", _SL_);
 787                         return;
 788                 }
 789
 790                 fprintf(fp, "%s",
 791                         rt_addr_n2a(family, sizeof(*coa), coa));
 792                 fprintf(fp, "%s", _SL_);
 793         }
 794
 795         if (tb[XFRMA_LASTUSED]) {
 796                 __u64 lastused;
 797
 798                 if (prefix)
 799                         fputs(prefix, fp);
 800                 fprintf(fp, "lastused ");
 801
 802                 if (RTA_PAYLOAD(tb[XFRMA_LASTUSED]) < sizeof(lastused)) {
 803                         fprintf(fp, "(ERROR truncated)");
 804                         fprintf(fp, "%s", _SL_);
 805                         return;
 806                 }
 807
 808                 lastused = rta_getattr_u64(tb[XFRMA_LASTUSED]);
 809
 810                 fprintf(fp, "%s", strxf_time(lastused));
 811                 fprintf(fp, "%s", _SL_);
 812         }
 813
 814         if (tb[XFRMA_REPLAY_VAL]) {
 815                 struct xfrm_replay_state *replay;
 816
 817                 if (prefix)
 818                         fputs(prefix, fp);
 819                 fprintf(fp, "anti-replay context: ");
 820
 821                 if (RTA_PAYLOAD(tb[XFRMA_REPLAY_VAL]) < sizeof(*replay)) {
 822                         fprintf(fp, "(ERROR truncated)");
 823                         fprintf(fp, "%s", _SL_);
 824                         return;
 825                 }
 826
 827                 replay = RTA_DATA(tb[XFRMA_REPLAY_VAL]);
 828                 fprintf(fp, "seq 0x%x, oseq 0x%x, bitmap 0x%08x",
 829                         replay->seq, replay->oseq, replay->bitmap);
 830                 fprintf(fp, "%s", _SL_);
 831         }
 832
 833         if (tb[XFRMA_REPLAY_ESN_VAL]) {
 834                 struct xfrm_replay_state_esn *replay;
 835                 unsigned int i, j;
 836
 837                 if (prefix)
 838                         fputs(prefix, fp);
 839                 fprintf(fp, "anti-replay esn context:");
 840
 841                 if (RTA_PAYLOAD(tb[XFRMA_REPLAY_ESN_VAL]) < sizeof(*replay)) {
 842                         fprintf(fp, "(ERROR truncated)");
 843                         fprintf(fp, "%s", _SL_);
 844                         return;
 845                 }
 846                 fprintf(fp, "%s", _SL_);
 847
 848                 replay = RTA_DATA(tb[XFRMA_REPLAY_ESN_VAL]);
 849                 if (prefix)
 850                         fputs(prefix, fp);
 851                 fprintf(fp, " seq-hi 0x%x, seq 0x%x, oseq-hi 0x%0x, oseq 0x%0x",
 852                         replay->seq_hi, replay->seq, replay->oseq_hi,
 853                         replay->oseq);
 854                 fprintf(fp, "%s", _SL_);
 855                 if (prefix)
 856                         fputs(prefix, fp);
 857                 fprintf(fp, " replay_window %u, bitmap-length %u",
 858                         replay->replay_window, replay->bmp_len);
 859                 for (i = replay->bmp_len, j = 0; i; i--) {
 860                         if (j++ % 8 == 0) {
 861                                 fprintf(fp, "%s", _SL_);
 862                                 if (prefix)
 863                                         fputs(prefix, fp);
 864                                 fprintf(fp, " ");
 865                         }
 866                         fprintf(fp, "%08x ", replay->bmp[i - 1]);
 867                 }
 868                 fprintf(fp, "%s", _SL_);
 869         }
 870         if (tb[XFRMA_OFFLOAD_DEV]) {
 871                 struct xfrm_user_offload *xuo;
 872
 873                 if (prefix)
 874                         fputs(prefix, fp);
 875                 fprintf(fp, "crypto offload parameters: ");
 876
 877                 if (RTA_PAYLOAD(tb[XFRMA_OFFLOAD_DEV]) < sizeof(*xuo)) {
 878                         fprintf(fp, "(ERROR truncated)");
 879                         fprintf(fp, "%s", _SL_);
 880                         return;
 881                 }
 882
 883                 xuo = (struct xfrm_user_offload *)
 884                         RTA_DATA(tb[XFRMA_OFFLOAD_DEV]);
 885                 fprintf(fp, "dev %s dir %s", ll_index_to_name(xuo->ifindex),
 886                         (xuo->flags & XFRM_OFFLOAD_INBOUND) ? "in" : "out");
 887                 fprintf(fp, "%s", _SL_);
 888         }
 889 }
 890
 891 static int xfrm_selector_iszero(struct xfrm_selector *s)
 892 {
 893         struct xfrm_selector s0 = {};
 894
 895         return (memcmp(&s0, s, sizeof(s0)) == 0);
 896 }
 897
 898 void xfrm_state_info_print(struct xfrm_usersa_info *xsinfo,
 899                             struct rtattr *tb[], FILE *fp, const char *prefix,
 900                             const char *title)
 901 {
 902         char buf[STRBUF_SIZE] = {};
 903         int force_spi = xfrm_xfrmproto_is_ipsec(xsinfo->id.proto);
 904
 905         xfrm_id_info_print(&xsinfo->saddr, &xsinfo->id, xsinfo->mode,
 906                            xsinfo->reqid, xsinfo->family, force_spi, fp,
 907                            prefix, title);
 908
 909         if (prefix)
 910                 strlcat(buf, prefix, sizeof(buf));
 911         strlcat(buf, "\t", sizeof(buf));
 912
 913         fputs(buf, fp);
 914         fprintf(fp, "replay-window %u ", xsinfo->replay_window);
 915         if (show_stats > 0)
 916                 fprintf(fp, "seq 0x%08u ", xsinfo->seq);
 917         if (show_stats > 0 || xsinfo->flags) {
 918                 __u8 flags = xsinfo->flags;
 919
 920                 fprintf(fp, "flag ");
 921                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOECN, "noecn");
 922                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_DECAP_DSCP, "decap-dscp");
 923                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOPMTUDISC, "nopmtudisc");
 924                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_WILDRECV, "wildrecv");
 925                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ICMP, "icmp");
 926                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_AF_UNSPEC, "af-unspec");
 927                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ALIGN4, "align4");
 928                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ESN, "esn");
 929                 if (flags)
 930                         fprintf(fp, "%x", flags);
 931         }
 932         if (show_stats > 0 && tb[XFRMA_SA_EXTRA_FLAGS]) {
 933                 __u32 extra_flags = rta_getattr_u32(tb[XFRMA_SA_EXTRA_FLAGS]);
 934
 935                 fprintf(fp, "extra_flag ");
 936                 XFRM_FLAG_PRINT(fp, extra_flags,
 937                                 XFRM_SA_XFLAG_DONT_ENCAP_DSCP,
 938                                 "dont-encap-dscp");
 939                 if (extra_flags)
 940                         fprintf(fp, "%x", extra_flags);
 941         }
 942         if (show_stats > 0)
 943                 fprintf(fp, " (0x%s)", strxf_mask8(xsinfo->flags));
 944         fprintf(fp, "%s", _SL_);
 945
 946         xfrm_xfrma_print(tb, xsinfo->family, fp, buf);
 947
 948         if (!xfrm_selector_iszero(&xsinfo->sel)) {
 949                 char sbuf[STRBUF_SIZE];
 950
 951                 memcpy(sbuf, buf, sizeof(sbuf));
 952                 strlcat(sbuf, "sel ", sizeof(sbuf));
 953
 954                 xfrm_selector_print(&xsinfo->sel, xsinfo->family, fp, sbuf);
 955         }
 956
 957         if (show_stats > 0) {
 958                 xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, buf);
 959                 xfrm_stats_print(&xsinfo->stats, fp, buf);
 960         }
 961
 962         if (tb[XFRMA_SEC_CTX]) {
 963                 struct xfrm_user_sec_ctx *sctx;
 964
 965                 fprintf(fp, "\tsecurity context ");
 966
 967                 if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
 968                         fprintf(fp, "(ERROR truncated)");
 969
 970                 sctx = RTA_DATA(tb[XFRMA_SEC_CTX]);
 971
 972                 fprintf(fp, "%s %s", (char *)(sctx + 1), _SL_);
 973         }
 974
 975 }
 976
 977 void xfrm_policy_info_print(struct xfrm_userpolicy_info *xpinfo,
 978                             struct rtattr *tb[], FILE *fp, const char *prefix,
 979                             const char *title)
 980 {
 981         char buf[STRBUF_SIZE] = {};
 982
 983         xfrm_selector_print(&xpinfo->sel, preferred_family, fp, title);
 984
 985         if (tb[XFRMA_SEC_CTX]) {
 986                 struct xfrm_user_sec_ctx *sctx;
 987
 988                 fprintf(fp, "\tsecurity context ");
 989
 990                 if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
 991                         fprintf(fp, "(ERROR truncated)");
 992
 993                 sctx = RTA_DATA(tb[XFRMA_SEC_CTX]);
 994
 995                 fprintf(fp, "%s ", (char *)(sctx + 1));
 996                 fprintf(fp, "%s", _SL_);
 997         }
 998
 999         if (prefix)
1000                 strlcat(buf, prefix, sizeof(buf));
1001         strlcat(buf, "\t", sizeof(buf));
1002
1003         fputs(buf, fp);
1004         if (xpinfo->dir >= XFRM_POLICY_MAX) {
1005                 xpinfo->dir -= XFRM_POLICY_MAX;
1006                 fprintf(fp, "socket ");
1007         } else
1008                 fprintf(fp, "dir ");
1009
1010         switch (xpinfo->dir) {
1011         case XFRM_POLICY_IN:
1012                 fprintf(fp, "in");
1013                 break;
1014         case XFRM_POLICY_OUT:
1015                 fprintf(fp, "out");
1016                 break;
1017         case XFRM_POLICY_FWD:
1018                 fprintf(fp, "fwd");
1019                 break;
1020         default:
1021                 fprintf(fp, "%u", xpinfo->dir);
1022                 break;
1023         }
1024         fprintf(fp, " ");
1025
1026         switch (xpinfo->action) {
1027         case XFRM_POLICY_ALLOW:
1028                 if (show_stats > 0)
1029                         fprintf(fp, "action allow ");
1030                 break;
1031         case XFRM_POLICY_BLOCK:
1032                 fprintf(fp, "action block ");
1033                 break;
1034         default:
1035                 fprintf(fp, "action %u ", xpinfo->action);
1036                 break;
1037         }
1038
1039         if (show_stats)
1040                 fprintf(fp, "index %u ", xpinfo->index);
1041         fprintf(fp, "priority %u ", xpinfo->priority);
1042
1043         if (tb[XFRMA_POLICY_TYPE]) {
1044                 struct xfrm_userpolicy_type *upt;
1045
1046                 fprintf(fp, "ptype ");
1047
1048                 if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt))
1049                         fprintf(fp, "(ERROR truncated)");
1050
1051                 upt = RTA_DATA(tb[XFRMA_POLICY_TYPE]);
1052                 fprintf(fp, "%s ", strxf_ptype(upt->type));
1053         }
1054
1055         if (show_stats > 0)
1056                 fprintf(fp, "share %s ", strxf_share(xpinfo->share));
1057
1058         if (show_stats > 0 || xpinfo->flags) {
1059                 __u8 flags = xpinfo->flags;
1060
1061                 fprintf(fp, "flag ");
1062                 XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_LOCALOK, "localok");
1063                 XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_ICMP, "icmp");
1064                 if (flags)
1065                         fprintf(fp, "%x", flags);
1066         }
1067         if (show_stats > 0)
1068                 fprintf(fp, " (0x%s)", strxf_mask8(xpinfo->flags));
1069         fprintf(fp, "%s", _SL_);
1070
1071         if (show_stats > 0)
1072                 xfrm_lifetime_print(&xpinfo->lft, &xpinfo->curlft, fp, buf);
1073
1074         xfrm_xfrma_print(tb, xpinfo->sel.family, fp, buf);
1075 }
1076
1077 int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
1078                   int loose, int *argcp, char ***argvp)
1079 {
1080         int argc = *argcp;
1081         char **argv = *argvp;
1082         inet_prefix dst = {};
1083         inet_prefix src = {};
1084
1085         while (1) {
1086                 if (strcmp(*argv, "src") == 0) {
1087                         NEXT_ARG();
1088
1089                         get_prefix(&src, *argv, preferred_family);
1090                         if (src.family == AF_UNSPEC)
1091                                 invarg("value after \"src\" has an unrecognized address family", *argv);
1092                         if (family)
1093                                 *family = src.family;
1094
1095                         memcpy(saddr, &src.data, sizeof(*saddr));
1096
1097                         filter.id_src_mask = src.bitlen;
1098
1099                 } else if (strcmp(*argv, "dst") == 0) {
1100                         NEXT_ARG();
1101
1102                         get_prefix(&dst, *argv, preferred_family);
1103                         if (dst.family == AF_UNSPEC)
1104                                 invarg("value after \"dst\" has an unrecognized address family", *argv);
1105                         if (family)
1106                                 *family = dst.family;
1107
1108                         memcpy(&id->daddr, &dst.data, sizeof(id->daddr));
1109
1110                         filter.id_dst_mask = dst.bitlen;
1111
1112                 } else if (strcmp(*argv, "proto") == 0) {
1113                         int ret;
1114
1115                         NEXT_ARG();
1116
1117                         ret = xfrm_xfrmproto_getbyname(*argv);
1118                         if (ret < 0)
1119                                 invarg("XFRM-PROTO value is invalid", *argv);
1120
1121                         id->proto = (__u8)ret;
1122
1123                         filter.id_proto_mask = XFRM_FILTER_MASK_FULL;
1124
1125                 } else if (strcmp(*argv, "spi") == 0) {
1126                         NEXT_ARG();
1127                         if (get_be32(&id->spi, *argv, 0))
1128                                 invarg("SPI value is invalid", *argv);
1129
1130                         filter.id_spi_mask = XFRM_FILTER_MASK_FULL;
1131
1132                 } else {
1133                         PREV_ARG(); /* back track */
1134                         break;
1135                 }
1136
1137                 if (!NEXT_ARG_OK())
1138                         break;
1139                 NEXT_ARG();
1140         }
1141
1142         if (src.family && dst.family && (src.family != dst.family))
1143                 invarg("the same address family is required between values after \"src\" and \"dst\"", *argv);
1144
1145         if (id->spi && id->proto) {
1146                 if (xfrm_xfrmproto_is_ro(id->proto)) {
1147                         fprintf(stderr, "\"spi\" is invalid with XFRM-PROTO value \"%s\"\n",
1148                                 strxf_xfrmproto(id->proto));
1149                         exit(1);
1150                 } else if (id->proto == IPPROTO_COMP && ntohl(id->spi) >= 0x10000) {
1151                         fprintf(stderr, "SPI value is too large with XFRM-PROTO value \"%s\"\n",
1152                                 strxf_xfrmproto(id->proto));
1153                         exit(1);
1154                 }
1155         }
1156
1157         if (loose == 0 && id->proto == 0)
1158                 missarg("XFRM-PROTO");
1159         if (argc == *argcp)
1160                 missarg("ID");
1161
1162         *argcp = argc;
1163         *argvp = argv;
1164
1165         return 0;
1166 }
1167
1168 int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp)
1169 {
1170         int argc = *argcp;
1171         char **argv = *argvp;
1172
1173         if (matches(*argv, "transport") == 0)
1174                 *mode = XFRM_MODE_TRANSPORT;
1175         else if (matches(*argv, "tunnel") == 0)
1176                 *mode = XFRM_MODE_TUNNEL;
1177         else if (matches(*argv, "ro") == 0)
1178                 *mode = XFRM_MODE_ROUTEOPTIMIZATION;
1179         else if (matches(*argv, "in_trigger") == 0)
1180                 *mode = XFRM_MODE_IN_TRIGGER;
1181         else if (matches(*argv, "beet") == 0)
1182                 *mode = XFRM_MODE_BEET;
1183         else
1184                 invarg("MODE value is invalid", *argv);
1185
1186         *argcp = argc;
1187         *argvp = argv;
1188
1189         return 0;
1190 }
1191
1192 int xfrm_encap_type_parse(__u16 *type, int *argcp, char ***argvp)
1193 {
1194         int argc = *argcp;
1195         char **argv = *argvp;
1196
1197         if (strcmp(*argv, "espinudp-nonike") == 0)
1198                 *type = 1;
1199         else if (strcmp(*argv, "espinudp") == 0)
1200                 *type = 2;
1201         else
1202                 invarg("ENCAP-TYPE value is invalid", *argv);
1203
1204         *argcp = argc;
1205         *argvp = argv;
1206
1207         return 0;
1208 }
1209
1210 /* NOTE: reqid is used by host-byte order */
1211 int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp)
1212 {
1213         int argc = *argcp;
1214         char **argv = *argvp;
1215
1216         if (get_u32(reqid, *argv, 0))
1217                 invarg("REQID value is invalid", *argv);
1218
1219         *argcp = argc;
1220         *argvp = argv;
1221
1222         return 0;
1223 }
1224
1225 static int xfrm_selector_upspec_parse(struct xfrm_selector *sel,
1226                                       int *argcp, char ***argvp)
1227 {
1228         int argc = *argcp;
1229         char **argv = *argvp;
1230         char *sportp = NULL;
1231         char *dportp = NULL;
1232         char *typep = NULL;
1233         char *codep = NULL;
1234         char *grekey = NULL;
1235
1236         while (1) {
1237                 if (strcmp(*argv, "proto") == 0) {
1238                         __u8 upspec;
1239
1240                         NEXT_ARG();
1241
1242                         if (strcmp(*argv, "any") == 0)
1243                                 upspec = 0;
1244                         else {
1245                                 struct protoent *pp;
1246
1247                                 pp = getprotobyname(*argv);
1248                                 if (pp)
1249                                         upspec = pp->p_proto;
1250                                 else {
1251                                         if (get_u8(&upspec, *argv, 0))
1252                                                 invarg("PROTO value is invalid", *argv);
1253                                 }
1254                         }
1255                         sel->proto = upspec;
1256
1257                         filter.upspec_proto_mask = XFRM_FILTER_MASK_FULL;
1258
1259                 } else if (strcmp(*argv, "sport") == 0) {
1260                         sportp = *argv;
1261
1262                         NEXT_ARG();
1263
1264                         if (get_be16(&sel->sport, *argv, 0))
1265                                 invarg("value after \"sport\" is invalid", *argv);
1266                         if (sel->sport)
1267                                 sel->sport_mask = ~((__u16)0);
1268
1269                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
1270
1271                 } else if (strcmp(*argv, "dport") == 0) {
1272                         dportp = *argv;
1273
1274                         NEXT_ARG();
1275
1276                         if (get_be16(&sel->dport, *argv, 0))
1277                                 invarg("value after \"dport\" is invalid", *argv);
1278                         if (sel->dport)
1279                                 sel->dport_mask = ~((__u16)0);
1280
1281                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1282
1283                 } else if (strcmp(*argv, "type") == 0) {
1284                         typep = *argv;
1285
1286                         NEXT_ARG();
1287
1288                         if (get_u16(&sel->sport, *argv, 0) ||
1289                             (sel->sport & ~((__u16)0xff)))
1290                                 invarg("value after \"type\" is invalid", *argv);
1291                         sel->sport = htons(sel->sport);
1292                         sel->sport_mask = ~((__u16)0);
1293
1294                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
1295
1296
1297                 } else if (strcmp(*argv, "code") == 0) {
1298                         codep = *argv;
1299
1300                         NEXT_ARG();
1301
1302                         if (get_u16(&sel->dport, *argv, 0) ||
1303                             (sel->dport & ~((__u16)0xff)))
1304                                 invarg("value after \"code\" is invalid", *argv);
1305                         sel->dport = htons(sel->dport);
1306                         sel->dport_mask = ~((__u16)0);
1307
1308                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1309
1310                 } else if (strcmp(*argv, "key") == 0) {
1311                         unsigned int uval;
1312
1313                         grekey = *argv;
1314
1315                         NEXT_ARG();
1316
1317                         if (strchr(*argv, '.'))
1318                                 uval = htonl(get_addr32(*argv));
1319                         else {
1320                                 if (get_unsigned(&uval, *argv, 0) < 0) {
1321                                         fprintf(stderr, "value after \"key\" is invalid\n");
1322                                         exit(-1);
1323                                 }
1324                         }
1325
1326                         sel->sport = htons(uval >> 16);
1327                         sel->dport = htons(uval & 0xffff);
1328                         sel->sport_mask = ~((__u16)0);
1329                         sel->dport_mask = ~((__u16)0);
1330
1331                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1332
1333                 } else {
1334                         PREV_ARG(); /* back track */
1335                         break;
1336                 }
1337
1338                 if (!NEXT_ARG_OK())
1339                         break;
1340                 NEXT_ARG();
1341         }
1342         if (argc == *argcp)
1343                 missarg("UPSPEC");
1344         if (sportp || dportp) {
1345                 switch (sel->proto) {
1346                 case IPPROTO_TCP:
1347                 case IPPROTO_UDP:
1348                 case IPPROTO_SCTP:
1349                 case IPPROTO_DCCP:
1350                 case IPPROTO_IP: /* to allow shared SA for different protocols */
1351                         break;
1352                 default:
1353                         fprintf(stderr, "\"sport\" and \"dport\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1354                         exit(1);
1355                 }
1356         }
1357         if (typep || codep) {
1358                 switch (sel->proto) {
1359                 case IPPROTO_ICMP:
1360                 case IPPROTO_ICMPV6:
1361                 case IPPROTO_MH:
1362                         break;
1363                 default:
1364                         fprintf(stderr, "\"type\" and \"code\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1365                         exit(1);
1366                 }
1367         }
1368         if (grekey) {
1369                 switch (sel->proto) {
1370                 case IPPROTO_GRE:
1371                         break;
1372                 default:
1373                         fprintf(stderr, "\"key\" is invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1374                         exit(1);
1375                 }
1376         }
1377
1378         *argcp = argc;
1379         *argvp = argv;
1380
1381         return 0;
1382 }
1383
1384 int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp)
1385 {
1386         int argc = *argcp;
1387         char **argv = *argvp;
1388         inet_prefix dst = {};
1389         inet_prefix src = {};
1390         char *upspecp = NULL;
1391
1392         while (1) {
1393                 if (strcmp(*argv, "src") == 0) {
1394                         NEXT_ARG();
1395
1396                         get_prefix(&src, *argv, preferred_family);
1397                         if (src.family == AF_UNSPEC)
1398                                 invarg("value after \"src\" has an unrecognized address family", *argv);
1399                         sel->family = src.family;
1400
1401                         memcpy(&sel->saddr, &src.data, sizeof(sel->saddr));
1402                         sel->prefixlen_s = src.bitlen;
1403
1404                         filter.sel_src_mask = src.bitlen;
1405
1406                 } else if (strcmp(*argv, "dst") == 0) {
1407                         NEXT_ARG();
1408
1409                         get_prefix(&dst, *argv, preferred_family);
1410                         if (dst.family == AF_UNSPEC)
1411                                 invarg("value after \"dst\" has an unrecognized address family", *argv);
1412                         sel->family = dst.family;
1413
1414                         memcpy(&sel->daddr, &dst.data, sizeof(sel->daddr));
1415                         sel->prefixlen_d = dst.bitlen;
1416
1417                         filter.sel_dst_mask = dst.bitlen;
1418
1419                 } else if (strcmp(*argv, "dev") == 0) {
1420                         int ifindex;
1421
1422                         NEXT_ARG();
1423
1424                         if (strcmp(*argv, "none") == 0)
1425                                 ifindex = 0;
1426                         else {
1427                                 ifindex = ll_name_to_index(*argv);
1428                                 if (ifindex <= 0)
1429                                         invarg("DEV value is invalid", *argv);
1430                         }
1431                         sel->ifindex = ifindex;
1432
1433                         filter.sel_dev_mask = XFRM_FILTER_MASK_FULL;
1434
1435                 } else {
1436                         if (upspecp) {
1437                                 PREV_ARG(); /* back track */
1438                                 break;
1439                         } else {
1440                                 upspecp = *argv;
1441                                 xfrm_selector_upspec_parse(sel, &argc, &argv);
1442                         }
1443                 }
1444
1445                 if (!NEXT_ARG_OK())
1446                         break;
1447
1448                 NEXT_ARG();
1449         }
1450
1451         if (src.family && dst.family && (src.family != dst.family))
1452                 invarg("the same address family is required between values after \"src\" and \"dst\"", *argv);
1453
1454         if (argc == *argcp)
1455                 missarg("SELECTOR");
1456
1457         *argcp = argc;
1458         *argvp = argv;
1459
1460         return 0;
1461 }
1462
1463 int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
1464                             int *argcp, char ***argvp)
1465 {
1466         int argc = *argcp;
1467         char **argv = *argvp;
1468         int ret;
1469
1470         if (strcmp(*argv, "time-soft") == 0) {
1471                 NEXT_ARG();
1472                 ret = get_u64(&lft->soft_add_expires_seconds, *argv, 0);
1473                 if (ret)
1474                         invarg("value after \"time-soft\" is invalid", *argv);
1475         } else if (strcmp(*argv, "time-hard") == 0) {
1476                 NEXT_ARG();
1477                 ret = get_u64(&lft->hard_add_expires_seconds, *argv, 0);
1478                 if (ret)
1479                         invarg("value after \"time-hard\" is invalid", *argv);
1480         } else if (strcmp(*argv, "time-use-soft") == 0) {
1481                 NEXT_ARG();
1482                 ret = get_u64(&lft->soft_use_expires_seconds, *argv, 0);
1483                 if (ret)
1484                         invarg("value after \"time-use-soft\" is invalid", *argv);
1485         } else if (strcmp(*argv, "time-use-hard") == 0) {
1486                 NEXT_ARG();
1487                 ret = get_u64(&lft->hard_use_expires_seconds, *argv, 0);
1488                 if (ret)
1489                         invarg("value after \"time-use-hard\" is invalid", *argv);
1490         } else if (strcmp(*argv, "byte-soft") == 0) {
1491                 NEXT_ARG();
1492                 ret = get_u64(&lft->soft_byte_limit, *argv, 0);
1493                 if (ret)
1494                         invarg("value after \"byte-soft\" is invalid", *argv);
1495         } else if (strcmp(*argv, "byte-hard") == 0) {
1496                 NEXT_ARG();
1497                 ret = get_u64(&lft->hard_byte_limit, *argv, 0);
1498                 if (ret)
1499                         invarg("value after \"byte-hard\" is invalid", *argv);
1500         } else if (strcmp(*argv, "packet-soft") == 0) {
1501                 NEXT_ARG();
1502                 ret = get_u64(&lft->soft_packet_limit, *argv, 0);
1503                 if (ret)
1504                         invarg("value after \"packet-soft\" is invalid", *argv);
1505         } else if (strcmp(*argv, "packet-hard") == 0) {
1506                 NEXT_ARG();
1507                 ret = get_u64(&lft->hard_packet_limit, *argv, 0);
1508                 if (ret)
1509                         invarg("value after \"packet-hard\" is invalid", *argv);
1510         } else
1511                 invarg("LIMIT value is invalid", *argv);
1512
1513         *argcp = argc;
1514         *argvp = argv;
1515
1516         return 0;
1517 }
1518
1519 int do_xfrm(int argc, char **argv)
1520 {
1521         memset(&filter, 0, sizeof(filter));
1522
1523         if (argc < 1)
1524                 usage();
1525
1526         if (matches(*argv, "state") == 0 ||
1527             matches(*argv, "sa") == 0)
1528                 return do_xfrm_state(argc-1, argv+1);
1529         else if (matches(*argv, "policy") == 0)
1530                 return do_xfrm_policy(argc-1, argv+1);
1531         else if (matches(*argv, "monitor") == 0)
1532                 return do_xfrm_monitor(argc-1, argv+1);
1533         else if (matches(*argv, "help") == 0) {
1534                 usage();
1535                 fprintf(stderr, "xfrm Object \"%s\" is unknown.\n", *argv);
1536                 exit(-1);
1537         }
1538         usage();
1539 }