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                               bool nokeys)
 502 {
 503         int keylen;
 504         int i;
 505
 506         if (prefix)
 507                 fputs(prefix, fp);
 508
 509         fprintf(fp, "%s ", strxf_algotype(type));
 510
 511         if (len < sizeof(*algo)) {
 512                 fprintf(fp, "(ERROR truncated)");
 513                 goto fin;
 514         }
 515         len -= sizeof(*algo);
 516
 517         fprintf(fp, "%s ", algo->alg_name);
 518
 519         keylen = algo->alg_key_len / 8;
 520         if (len < keylen) {
 521                 fprintf(fp, "(ERROR truncated)");
 522                 goto fin;
 523         }
 524
 525         if (nokeys)
 526                 fprintf(fp, "<<Keys hidden>>");
 527         else if (keylen > 0) {
 528                 fprintf(fp, "0x");
 529                 for (i = 0; i < keylen; i++)
 530                         fprintf(fp, "%.2x", (unsigned char)algo->alg_key[i]);
 531
 532                 if (show_stats > 0)
 533                         fprintf(fp, " (%d bits)", algo->alg_key_len);
 534         }
 535
 536  fin:
 537         if (newline)
 538                 fprintf(fp, "%s", _SL_);
 539 }
 540
 541 static inline void xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
 542                                    FILE *fp, const char *prefix, bool nokeys)
 543 {
 544         return __xfrm_algo_print(algo, type, len, fp, prefix, 1, nokeys);
 545 }
 546
 547 static void xfrm_aead_print(struct xfrm_algo_aead *algo, int len,
 548                             FILE *fp, const char *prefix, bool nokeys)
 549 {
 550         struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8);
 551
 552         memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name));
 553         base_algo->alg_key_len = algo->alg_key_len;
 554         memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8);
 555
 556         __xfrm_algo_print(base_algo, XFRMA_ALG_AEAD, len, fp, prefix, 0,
 557                           nokeys);
 558
 559         fprintf(fp, " %d", algo->alg_icv_len);
 560
 561         fprintf(fp, "%s", _SL_);
 562 }
 563
 564 static void xfrm_auth_trunc_print(struct xfrm_algo_auth *algo, int len,
 565                                   FILE *fp, const char *prefix, bool nokeys)
 566 {
 567         struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8);
 568
 569         memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name));
 570         base_algo->alg_key_len = algo->alg_key_len;
 571         memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8);
 572
 573         __xfrm_algo_print(base_algo, XFRMA_ALG_AUTH_TRUNC, len, fp, prefix, 0,
 574                           nokeys);
 575
 576         fprintf(fp, " %d", algo->alg_trunc_len);
 577
 578         fprintf(fp, "%s", _SL_);
 579 }
 580
 581 static void xfrm_tmpl_print(struct xfrm_user_tmpl *tmpls, int len,
 582                             FILE *fp, const char *prefix)
 583 {
 584         int ntmpls = len / sizeof(struct xfrm_user_tmpl);
 585         int i;
 586
 587         if (ntmpls <= 0) {
 588                 if (prefix)
 589                         fputs(prefix, fp);
 590                 fprintf(fp, "(ERROR \"tmpl\" truncated)");
 591                 fprintf(fp, "%s", _SL_);
 592                 return;
 593         }
 594
 595         for (i = 0; i < ntmpls; i++) {
 596                 struct xfrm_user_tmpl *tmpl = &tmpls[i];
 597
 598                 if (prefix)
 599                         fputs(prefix, fp);
 600
 601                 xfrm_id_info_print(&tmpl->saddr, &tmpl->id, tmpl->mode,
 602                                    tmpl->reqid, tmpl->family, 0, fp, prefix, "tmpl ");
 603
 604                 if (show_stats > 0 || tmpl->optional) {
 605                         if (prefix)
 606                                 fputs(prefix, fp);
 607                         fprintf(fp, "\t");
 608                         switch (tmpl->optional) {
 609                         case 0:
 610                                 if (show_stats > 0)
 611                                         fprintf(fp, "level required ");
 612                                 break;
 613                         case 1:
 614                                 fprintf(fp, "level use ");
 615                                 break;
 616                         default:
 617                                 fprintf(fp, "level %u ", tmpl->optional);
 618                                 break;
 619                         }
 620
 621                         if (show_stats > 0)
 622                                 fprintf(fp, "share %s ", strxf_share(tmpl->share));
 623
 624                         fprintf(fp, "%s", _SL_);
 625                 }
 626
 627                 if (show_stats > 0) {
 628                         if (prefix)
 629                                 fputs(prefix, fp);
 630                         fprintf(fp, "\t");
 631                         fprintf(fp, "%s-mask %s ",
 632                                 strxf_algotype(XFRMA_ALG_CRYPT),
 633                                 strxf_mask32(tmpl->ealgos));
 634                         fprintf(fp, "%s-mask %s ",
 635                                 strxf_algotype(XFRMA_ALG_AUTH),
 636                                 strxf_mask32(tmpl->aalgos));
 637                         fprintf(fp, "%s-mask %s",
 638                                 strxf_algotype(XFRMA_ALG_COMP),
 639                                 strxf_mask32(tmpl->calgos));
 640
 641                         fprintf(fp, "%s", _SL_);
 642                 }
 643         }
 644 }
 645
 646 static void xfrm_output_mark_print(struct rtattr *tb[], FILE *fp)
 647 {
 648         __u32 output_mark = rta_getattr_u32(tb[XFRMA_OUTPUT_MARK]);
 649
 650         fprintf(fp, "output-mark 0x%x", output_mark);
 651 }
 652
 653 int xfrm_parse_mark(struct xfrm_mark *mark, int *argcp, char ***argvp)
 654 {
 655         int argc = *argcp;
 656         char **argv = *argvp;
 657
 658         NEXT_ARG();
 659         if (get_u32(&mark->v, *argv, 0)) {
 660                 invarg("MARK value is invalid\n", *argv);
 661         }
 662         if (argc > 1)
 663                 NEXT_ARG();
 664         else { /* last entry on parse line */
 665                 mark->m = 0xffffffff;
 666                 goto done;
 667         }
 668
 669         if (strcmp(*argv, "mask") == 0) {
 670                 NEXT_ARG();
 671                 if (get_u32(&mark->m, *argv, 0)) {
 672                         invarg("MASK value is invalid\n", *argv);
 673                 }
 674         } else {
 675                 mark->m = 0xffffffff;
 676                 PREV_ARG();
 677         }
 678
 679 done:
 680         *argcp = argc;
 681         *argvp = argv;
 682
 683         return 0;
 684 }
 685
 686 void xfrm_xfrma_print(struct rtattr *tb[], __u16 family,
 687                       FILE *fp, const char *prefix, bool nokeys)
 688 {
 689         if (tb[XFRMA_MARK]) {
 690                 struct rtattr *rta = tb[XFRMA_MARK];
 691                 struct xfrm_mark *m = RTA_DATA(rta);
 692
 693                 fprintf(fp, "\tmark %#x/%#x ", m->v, m->m);
 694
 695                 if (tb[XFRMA_OUTPUT_MARK])
 696                         xfrm_output_mark_print(tb, fp);
 697                 fprintf(fp, "%s", _SL_);
 698         } else if (tb[XFRMA_OUTPUT_MARK]) {
 699                 fprintf(fp, "\t");
 700
 701                 xfrm_output_mark_print(tb, fp);
 702                 fprintf(fp, "%s", _SL_);
 703         }
 704
 705         if (tb[XFRMA_ALG_AUTH] && !tb[XFRMA_ALG_AUTH_TRUNC]) {
 706                 struct rtattr *rta = tb[XFRMA_ALG_AUTH];
 707
 708                 xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_AUTH, RTA_PAYLOAD(rta),
 709                                 fp, prefix, nokeys);
 710         }
 711
 712         if (tb[XFRMA_ALG_AUTH_TRUNC]) {
 713                 struct rtattr *rta = tb[XFRMA_ALG_AUTH_TRUNC];
 714
 715                 xfrm_auth_trunc_print(RTA_DATA(rta), RTA_PAYLOAD(rta), fp,
 716                                       prefix, nokeys);
 717         }
 718
 719         if (tb[XFRMA_ALG_AEAD]) {
 720                 struct rtattr *rta = tb[XFRMA_ALG_AEAD];
 721
 722                 xfrm_aead_print(RTA_DATA(rta), RTA_PAYLOAD(rta), fp, prefix,
 723                                 nokeys);
 724         }
 725
 726         if (tb[XFRMA_ALG_CRYPT]) {
 727                 struct rtattr *rta = tb[XFRMA_ALG_CRYPT];
 728
 729                 xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_CRYPT,
 730                                 RTA_PAYLOAD(rta), fp, prefix, nokeys);
 731         }
 732
 733         if (tb[XFRMA_ALG_COMP]) {
 734                 struct rtattr *rta = tb[XFRMA_ALG_COMP];
 735
 736                 xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_COMP, RTA_PAYLOAD(rta),
 737                                 fp, prefix, nokeys);
 738         }
 739
 740         if (tb[XFRMA_ENCAP]) {
 741                 struct xfrm_encap_tmpl *e;
 742
 743                 if (prefix)
 744                         fputs(prefix, fp);
 745                 fprintf(fp, "encap ");
 746
 747                 if (RTA_PAYLOAD(tb[XFRMA_ENCAP]) < sizeof(*e)) {
 748                         fprintf(fp, "(ERROR truncated)");
 749                         fprintf(fp, "%s", _SL_);
 750                         return;
 751                 }
 752                 e = RTA_DATA(tb[XFRMA_ENCAP]);
 753
 754                 fprintf(fp, "type ");
 755                 switch (e->encap_type) {
 756                 case 1:
 757                         fprintf(fp, "espinudp-nonike ");
 758                         break;
 759                 case 2:
 760                         fprintf(fp, "espinudp ");
 761                         break;
 762                 default:
 763                         fprintf(fp, "%u ", e->encap_type);
 764                         break;
 765                 }
 766                 fprintf(fp, "sport %u ", ntohs(e->encap_sport));
 767                 fprintf(fp, "dport %u ", ntohs(e->encap_dport));
 768
 769                 fprintf(fp, "addr %s",
 770                         rt_addr_n2a(family, sizeof(e->encap_oa), &e->encap_oa));
 771                 fprintf(fp, "%s", _SL_);
 772         }
 773
 774         if (tb[XFRMA_TMPL]) {
 775                 struct rtattr *rta = tb[XFRMA_TMPL];
 776
 777                 xfrm_tmpl_print(RTA_DATA(rta),
 778                                 RTA_PAYLOAD(rta), fp, prefix);
 779         }
 780
 781         if (tb[XFRMA_COADDR]) {
 782                 const xfrm_address_t *coa;
 783
 784                 if (prefix)
 785                         fputs(prefix, fp);
 786                 fprintf(fp, "coa ");
 787
 788                 coa = RTA_DATA(tb[XFRMA_COADDR]);
 789                 if (RTA_PAYLOAD(tb[XFRMA_COADDR]) < sizeof(*coa)) {
 790                         fprintf(fp, "(ERROR truncated)");
 791                         fprintf(fp, "%s", _SL_);
 792                         return;
 793                 }
 794
 795                 fprintf(fp, "%s",
 796                         rt_addr_n2a(family, sizeof(*coa), coa));
 797                 fprintf(fp, "%s", _SL_);
 798         }
 799
 800         if (tb[XFRMA_LASTUSED]) {
 801                 __u64 lastused;
 802
 803                 if (prefix)
 804                         fputs(prefix, fp);
 805                 fprintf(fp, "lastused ");
 806
 807                 if (RTA_PAYLOAD(tb[XFRMA_LASTUSED]) < sizeof(lastused)) {
 808                         fprintf(fp, "(ERROR truncated)");
 809                         fprintf(fp, "%s", _SL_);
 810                         return;
 811                 }
 812
 813                 lastused = rta_getattr_u64(tb[XFRMA_LASTUSED]);
 814
 815                 fprintf(fp, "%s", strxf_time(lastused));
 816                 fprintf(fp, "%s", _SL_);
 817         }
 818
 819         if (tb[XFRMA_REPLAY_VAL]) {
 820                 struct xfrm_replay_state *replay;
 821
 822                 if (prefix)
 823                         fputs(prefix, fp);
 824                 fprintf(fp, "anti-replay context: ");
 825
 826                 if (RTA_PAYLOAD(tb[XFRMA_REPLAY_VAL]) < sizeof(*replay)) {
 827                         fprintf(fp, "(ERROR truncated)");
 828                         fprintf(fp, "%s", _SL_);
 829                         return;
 830                 }
 831
 832                 replay = RTA_DATA(tb[XFRMA_REPLAY_VAL]);
 833                 fprintf(fp, "seq 0x%x, oseq 0x%x, bitmap 0x%08x",
 834                         replay->seq, replay->oseq, replay->bitmap);
 835                 fprintf(fp, "%s", _SL_);
 836         }
 837
 838         if (tb[XFRMA_REPLAY_ESN_VAL]) {
 839                 struct xfrm_replay_state_esn *replay;
 840                 unsigned int i, j;
 841
 842                 if (prefix)
 843                         fputs(prefix, fp);
 844                 fprintf(fp, "anti-replay esn context:");
 845
 846                 if (RTA_PAYLOAD(tb[XFRMA_REPLAY_ESN_VAL]) < sizeof(*replay)) {
 847                         fprintf(fp, "(ERROR truncated)");
 848                         fprintf(fp, "%s", _SL_);
 849                         return;
 850                 }
 851                 fprintf(fp, "%s", _SL_);
 852
 853                 replay = RTA_DATA(tb[XFRMA_REPLAY_ESN_VAL]);
 854                 if (prefix)
 855                         fputs(prefix, fp);
 856                 fprintf(fp, " seq-hi 0x%x, seq 0x%x, oseq-hi 0x%0x, oseq 0x%0x",
 857                         replay->seq_hi, replay->seq, replay->oseq_hi,
 858                         replay->oseq);
 859                 fprintf(fp, "%s", _SL_);
 860                 if (prefix)
 861                         fputs(prefix, fp);
 862                 fprintf(fp, " replay_window %u, bitmap-length %u",
 863                         replay->replay_window, replay->bmp_len);
 864                 for (i = replay->bmp_len, j = 0; i; i--) {
 865                         if (j++ % 8 == 0) {
 866                                 fprintf(fp, "%s", _SL_);
 867                                 if (prefix)
 868                                         fputs(prefix, fp);
 869                                 fprintf(fp, " ");
 870                         }
 871                         fprintf(fp, "%08x ", replay->bmp[i - 1]);
 872                 }
 873                 fprintf(fp, "%s", _SL_);
 874         }
 875         if (tb[XFRMA_OFFLOAD_DEV]) {
 876                 struct xfrm_user_offload *xuo;
 877
 878                 if (prefix)
 879                         fputs(prefix, fp);
 880                 fprintf(fp, "crypto offload parameters: ");
 881
 882                 if (RTA_PAYLOAD(tb[XFRMA_OFFLOAD_DEV]) < sizeof(*xuo)) {
 883                         fprintf(fp, "(ERROR truncated)");
 884                         fprintf(fp, "%s", _SL_);
 885                         return;
 886                 }
 887
 888                 xuo = (struct xfrm_user_offload *)
 889                         RTA_DATA(tb[XFRMA_OFFLOAD_DEV]);
 890                 fprintf(fp, "dev %s dir %s", ll_index_to_name(xuo->ifindex),
 891                         (xuo->flags & XFRM_OFFLOAD_INBOUND) ? "in" : "out");
 892                 fprintf(fp, "%s", _SL_);
 893         }
 894 }
 895
 896 static int xfrm_selector_iszero(struct xfrm_selector *s)
 897 {
 898         struct xfrm_selector s0 = {};
 899
 900         return (memcmp(&s0, s, sizeof(s0)) == 0);
 901 }
 902
 903 void xfrm_state_info_print(struct xfrm_usersa_info *xsinfo,
 904                             struct rtattr *tb[], FILE *fp, const char *prefix,
 905                             const char *title, bool nokeys)
 906 {
 907         char buf[STRBUF_SIZE] = {};
 908         int force_spi = xfrm_xfrmproto_is_ipsec(xsinfo->id.proto);
 909
 910         xfrm_id_info_print(&xsinfo->saddr, &xsinfo->id, xsinfo->mode,
 911                            xsinfo->reqid, xsinfo->family, force_spi, fp,
 912                            prefix, title);
 913
 914         if (prefix)
 915                 strlcat(buf, prefix, sizeof(buf));
 916         strlcat(buf, "\t", sizeof(buf));
 917
 918         fputs(buf, fp);
 919         fprintf(fp, "replay-window %u ", xsinfo->replay_window);
 920         if (show_stats > 0)
 921                 fprintf(fp, "seq 0x%08u ", xsinfo->seq);
 922         if (show_stats > 0 || xsinfo->flags) {
 923                 __u8 flags = xsinfo->flags;
 924
 925                 fprintf(fp, "flag ");
 926                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOECN, "noecn");
 927                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_DECAP_DSCP, "decap-dscp");
 928                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOPMTUDISC, "nopmtudisc");
 929                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_WILDRECV, "wildrecv");
 930                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ICMP, "icmp");
 931                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_AF_UNSPEC, "af-unspec");
 932                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ALIGN4, "align4");
 933                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ESN, "esn");
 934                 if (flags)
 935                         fprintf(fp, "%x", flags);
 936         }
 937         if (show_stats > 0 && tb[XFRMA_SA_EXTRA_FLAGS]) {
 938                 __u32 extra_flags = rta_getattr_u32(tb[XFRMA_SA_EXTRA_FLAGS]);
 939
 940                 fprintf(fp, "extra_flag ");
 941                 XFRM_FLAG_PRINT(fp, extra_flags,
 942                                 XFRM_SA_XFLAG_DONT_ENCAP_DSCP,
 943                                 "dont-encap-dscp");
 944                 if (extra_flags)
 945                         fprintf(fp, "%x", extra_flags);
 946         }
 947         if (show_stats > 0)
 948                 fprintf(fp, " (0x%s)", strxf_mask8(xsinfo->flags));
 949         fprintf(fp, "%s", _SL_);
 950
 951         xfrm_xfrma_print(tb, xsinfo->family, fp, buf, nokeys);
 952
 953         if (!xfrm_selector_iszero(&xsinfo->sel)) {
 954                 char sbuf[STRBUF_SIZE];
 955
 956                 memcpy(sbuf, buf, sizeof(sbuf));
 957                 strlcat(sbuf, "sel ", sizeof(sbuf));
 958
 959                 xfrm_selector_print(&xsinfo->sel, xsinfo->family, fp, sbuf);
 960         }
 961
 962         if (show_stats > 0) {
 963                 xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, buf);
 964                 xfrm_stats_print(&xsinfo->stats, fp, buf);
 965         }
 966
 967         if (tb[XFRMA_SEC_CTX]) {
 968                 struct xfrm_user_sec_ctx *sctx;
 969
 970                 fprintf(fp, "\tsecurity context ");
 971
 972                 if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
 973                         fprintf(fp, "(ERROR truncated)");
 974
 975                 sctx = RTA_DATA(tb[XFRMA_SEC_CTX]);
 976
 977                 fprintf(fp, "%s %s", (char *)(sctx + 1), _SL_);
 978         }
 979
 980 }
 981
 982 void xfrm_policy_info_print(struct xfrm_userpolicy_info *xpinfo,
 983                             struct rtattr *tb[], FILE *fp, const char *prefix,
 984                             const char *title)
 985 {
 986         char buf[STRBUF_SIZE] = {};
 987
 988         xfrm_selector_print(&xpinfo->sel, preferred_family, fp, title);
 989
 990         if (tb[XFRMA_SEC_CTX]) {
 991                 struct xfrm_user_sec_ctx *sctx;
 992
 993                 fprintf(fp, "\tsecurity context ");
 994
 995                 if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
 996                         fprintf(fp, "(ERROR truncated)");
 997
 998                 sctx = RTA_DATA(tb[XFRMA_SEC_CTX]);
 999
1000                 fprintf(fp, "%s ", (char *)(sctx + 1));
1001                 fprintf(fp, "%s", _SL_);
1002         }
1003
1004         if (prefix)
1005                 strlcat(buf, prefix, sizeof(buf));
1006         strlcat(buf, "\t", sizeof(buf));
1007
1008         fputs(buf, fp);
1009         if (xpinfo->dir >= XFRM_POLICY_MAX) {
1010                 xpinfo->dir -= XFRM_POLICY_MAX;
1011                 fprintf(fp, "socket ");
1012         } else
1013                 fprintf(fp, "dir ");
1014
1015         switch (xpinfo->dir) {
1016         case XFRM_POLICY_IN:
1017                 fprintf(fp, "in");
1018                 break;
1019         case XFRM_POLICY_OUT:
1020                 fprintf(fp, "out");
1021                 break;
1022         case XFRM_POLICY_FWD:
1023                 fprintf(fp, "fwd");
1024                 break;
1025         default:
1026                 fprintf(fp, "%u", xpinfo->dir);
1027                 break;
1028         }
1029         fprintf(fp, " ");
1030
1031         switch (xpinfo->action) {
1032         case XFRM_POLICY_ALLOW:
1033                 if (show_stats > 0)
1034                         fprintf(fp, "action allow ");
1035                 break;
1036         case XFRM_POLICY_BLOCK:
1037                 fprintf(fp, "action block ");
1038                 break;
1039         default:
1040                 fprintf(fp, "action %u ", xpinfo->action);
1041                 break;
1042         }
1043
1044         if (show_stats)
1045                 fprintf(fp, "index %u ", xpinfo->index);
1046         fprintf(fp, "priority %u ", xpinfo->priority);
1047
1048         if (tb[XFRMA_POLICY_TYPE]) {
1049                 struct xfrm_userpolicy_type *upt;
1050
1051                 fprintf(fp, "ptype ");
1052
1053                 if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt))
1054                         fprintf(fp, "(ERROR truncated)");
1055
1056                 upt = RTA_DATA(tb[XFRMA_POLICY_TYPE]);
1057                 fprintf(fp, "%s ", strxf_ptype(upt->type));
1058         }
1059
1060         if (show_stats > 0)
1061                 fprintf(fp, "share %s ", strxf_share(xpinfo->share));
1062
1063         if (show_stats > 0 || xpinfo->flags) {
1064                 __u8 flags = xpinfo->flags;
1065
1066                 fprintf(fp, "flag ");
1067                 XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_LOCALOK, "localok");
1068                 XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_ICMP, "icmp");
1069                 if (flags)
1070                         fprintf(fp, "%x", flags);
1071         }
1072         if (show_stats > 0)
1073                 fprintf(fp, " (0x%s)", strxf_mask8(xpinfo->flags));
1074         fprintf(fp, "%s", _SL_);
1075
1076         if (show_stats > 0)
1077                 xfrm_lifetime_print(&xpinfo->lft, &xpinfo->curlft, fp, buf);
1078
1079         xfrm_xfrma_print(tb, xpinfo->sel.family, fp, buf, false);
1080 }
1081
1082 int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
1083                   int loose, int *argcp, char ***argvp)
1084 {
1085         int argc = *argcp;
1086         char **argv = *argvp;
1087         inet_prefix dst = {};
1088         inet_prefix src = {};
1089
1090         while (1) {
1091                 if (strcmp(*argv, "src") == 0) {
1092                         NEXT_ARG();
1093
1094                         get_prefix(&src, *argv, preferred_family);
1095                         if (src.family == AF_UNSPEC)
1096                                 invarg("value after \"src\" has an unrecognized address family", *argv);
1097                         if (family)
1098                                 *family = src.family;
1099
1100                         memcpy(saddr, &src.data, sizeof(*saddr));
1101
1102                         filter.id_src_mask = src.bitlen;
1103
1104                 } else if (strcmp(*argv, "dst") == 0) {
1105                         NEXT_ARG();
1106
1107                         get_prefix(&dst, *argv, preferred_family);
1108                         if (dst.family == AF_UNSPEC)
1109                                 invarg("value after \"dst\" has an unrecognized address family", *argv);
1110                         if (family)
1111                                 *family = dst.family;
1112
1113                         memcpy(&id->daddr, &dst.data, sizeof(id->daddr));
1114
1115                         filter.id_dst_mask = dst.bitlen;
1116
1117                 } else if (strcmp(*argv, "proto") == 0) {
1118                         int ret;
1119
1120                         NEXT_ARG();
1121
1122                         ret = xfrm_xfrmproto_getbyname(*argv);
1123                         if (ret < 0)
1124                                 invarg("XFRM-PROTO value is invalid", *argv);
1125
1126                         id->proto = (__u8)ret;
1127
1128                         filter.id_proto_mask = XFRM_FILTER_MASK_FULL;
1129
1130                 } else if (strcmp(*argv, "spi") == 0) {
1131                         NEXT_ARG();
1132                         if (get_be32(&id->spi, *argv, 0))
1133                                 invarg("SPI value is invalid", *argv);
1134
1135                         filter.id_spi_mask = XFRM_FILTER_MASK_FULL;
1136
1137                 } else {
1138                         PREV_ARG(); /* back track */
1139                         break;
1140                 }
1141
1142                 if (!NEXT_ARG_OK())
1143                         break;
1144                 NEXT_ARG();
1145         }
1146
1147         if (src.family && dst.family && (src.family != dst.family))
1148                 invarg("the same address family is required between values after \"src\" and \"dst\"", *argv);
1149
1150         if (id->spi && id->proto) {
1151                 if (xfrm_xfrmproto_is_ro(id->proto)) {
1152                         fprintf(stderr, "\"spi\" is invalid with XFRM-PROTO value \"%s\"\n",
1153                                 strxf_xfrmproto(id->proto));
1154                         exit(1);
1155                 } else if (id->proto == IPPROTO_COMP && ntohl(id->spi) >= 0x10000) {
1156                         fprintf(stderr, "SPI value is too large with XFRM-PROTO value \"%s\"\n",
1157                                 strxf_xfrmproto(id->proto));
1158                         exit(1);
1159                 }
1160         }
1161
1162         if (loose == 0 && id->proto == 0)
1163                 missarg("XFRM-PROTO");
1164         if (argc == *argcp)
1165                 missarg("ID");
1166
1167         *argcp = argc;
1168         *argvp = argv;
1169
1170         return 0;
1171 }
1172
1173 int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp)
1174 {
1175         int argc = *argcp;
1176         char **argv = *argvp;
1177
1178         if (matches(*argv, "transport") == 0)
1179                 *mode = XFRM_MODE_TRANSPORT;
1180         else if (matches(*argv, "tunnel") == 0)
1181                 *mode = XFRM_MODE_TUNNEL;
1182         else if (matches(*argv, "ro") == 0)
1183                 *mode = XFRM_MODE_ROUTEOPTIMIZATION;
1184         else if (matches(*argv, "in_trigger") == 0)
1185                 *mode = XFRM_MODE_IN_TRIGGER;
1186         else if (matches(*argv, "beet") == 0)
1187                 *mode = XFRM_MODE_BEET;
1188         else
1189                 invarg("MODE value is invalid", *argv);
1190
1191         *argcp = argc;
1192         *argvp = argv;
1193
1194         return 0;
1195 }
1196
1197 int xfrm_encap_type_parse(__u16 *type, int *argcp, char ***argvp)
1198 {
1199         int argc = *argcp;
1200         char **argv = *argvp;
1201
1202         if (strcmp(*argv, "espinudp-nonike") == 0)
1203                 *type = 1;
1204         else if (strcmp(*argv, "espinudp") == 0)
1205                 *type = 2;
1206         else
1207                 invarg("ENCAP-TYPE value is invalid", *argv);
1208
1209         *argcp = argc;
1210         *argvp = argv;
1211
1212         return 0;
1213 }
1214
1215 /* NOTE: reqid is used by host-byte order */
1216 int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp)
1217 {
1218         int argc = *argcp;
1219         char **argv = *argvp;
1220
1221         if (get_u32(reqid, *argv, 0))
1222                 invarg("REQID value is invalid", *argv);
1223
1224         *argcp = argc;
1225         *argvp = argv;
1226
1227         return 0;
1228 }
1229
1230 static int xfrm_selector_upspec_parse(struct xfrm_selector *sel,
1231                                       int *argcp, char ***argvp)
1232 {
1233         int argc = *argcp;
1234         char **argv = *argvp;
1235         char *sportp = NULL;
1236         char *dportp = NULL;
1237         char *typep = NULL;
1238         char *codep = NULL;
1239         char *grekey = NULL;
1240
1241         while (1) {
1242                 if (strcmp(*argv, "proto") == 0) {
1243                         __u8 upspec;
1244
1245                         NEXT_ARG();
1246
1247                         if (strcmp(*argv, "any") == 0)
1248                                 upspec = 0;
1249                         else {
1250                                 struct protoent *pp;
1251
1252                                 pp = getprotobyname(*argv);
1253                                 if (pp)
1254                                         upspec = pp->p_proto;
1255                                 else {
1256                                         if (get_u8(&upspec, *argv, 0))
1257                                                 invarg("PROTO value is invalid", *argv);
1258                                 }
1259                         }
1260                         sel->proto = upspec;
1261
1262                         filter.upspec_proto_mask = XFRM_FILTER_MASK_FULL;
1263
1264                 } else if (strcmp(*argv, "sport") == 0) {
1265                         sportp = *argv;
1266
1267                         NEXT_ARG();
1268
1269                         if (get_be16(&sel->sport, *argv, 0))
1270                                 invarg("value after \"sport\" is invalid", *argv);
1271                         if (sel->sport)
1272                                 sel->sport_mask = ~((__u16)0);
1273
1274                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
1275
1276                 } else if (strcmp(*argv, "dport") == 0) {
1277                         dportp = *argv;
1278
1279                         NEXT_ARG();
1280
1281                         if (get_be16(&sel->dport, *argv, 0))
1282                                 invarg("value after \"dport\" is invalid", *argv);
1283                         if (sel->dport)
1284                                 sel->dport_mask = ~((__u16)0);
1285
1286                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1287
1288                 } else if (strcmp(*argv, "type") == 0) {
1289                         typep = *argv;
1290
1291                         NEXT_ARG();
1292
1293                         if (get_u16(&sel->sport, *argv, 0) ||
1294                             (sel->sport & ~((__u16)0xff)))
1295                                 invarg("value after \"type\" is invalid", *argv);
1296                         sel->sport = htons(sel->sport);
1297                         sel->sport_mask = ~((__u16)0);
1298
1299                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
1300
1301
1302                 } else if (strcmp(*argv, "code") == 0) {
1303                         codep = *argv;
1304
1305                         NEXT_ARG();
1306
1307                         if (get_u16(&sel->dport, *argv, 0) ||
1308                             (sel->dport & ~((__u16)0xff)))
1309                                 invarg("value after \"code\" is invalid", *argv);
1310                         sel->dport = htons(sel->dport);
1311                         sel->dport_mask = ~((__u16)0);
1312
1313                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1314
1315                 } else if (strcmp(*argv, "key") == 0) {
1316                         unsigned int uval;
1317
1318                         grekey = *argv;
1319
1320                         NEXT_ARG();
1321
1322                         if (strchr(*argv, '.'))
1323                                 uval = htonl(get_addr32(*argv));
1324                         else {
1325                                 if (get_unsigned(&uval, *argv, 0) < 0) {
1326                                         fprintf(stderr, "value after \"key\" is invalid\n");
1327                                         exit(-1);
1328                                 }
1329                         }
1330
1331                         sel->sport = htons(uval >> 16);
1332                         sel->dport = htons(uval & 0xffff);
1333                         sel->sport_mask = ~((__u16)0);
1334                         sel->dport_mask = ~((__u16)0);
1335
1336                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1337
1338                 } else {
1339                         PREV_ARG(); /* back track */
1340                         break;
1341                 }
1342
1343                 if (!NEXT_ARG_OK())
1344                         break;
1345                 NEXT_ARG();
1346         }
1347         if (argc == *argcp)
1348                 missarg("UPSPEC");
1349         if (sportp || dportp) {
1350                 switch (sel->proto) {
1351                 case IPPROTO_TCP:
1352                 case IPPROTO_UDP:
1353                 case IPPROTO_SCTP:
1354                 case IPPROTO_DCCP:
1355                 case IPPROTO_IP: /* to allow shared SA for different protocols */
1356                         break;
1357                 default:
1358                         fprintf(stderr, "\"sport\" and \"dport\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1359                         exit(1);
1360                 }
1361         }
1362         if (typep || codep) {
1363                 switch (sel->proto) {
1364                 case IPPROTO_ICMP:
1365                 case IPPROTO_ICMPV6:
1366                 case IPPROTO_MH:
1367                         break;
1368                 default:
1369                         fprintf(stderr, "\"type\" and \"code\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1370                         exit(1);
1371                 }
1372         }
1373         if (grekey) {
1374                 switch (sel->proto) {
1375                 case IPPROTO_GRE:
1376                         break;
1377                 default:
1378                         fprintf(stderr, "\"key\" is invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1379                         exit(1);
1380                 }
1381         }
1382
1383         *argcp = argc;
1384         *argvp = argv;
1385
1386         return 0;
1387 }
1388
1389 int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp)
1390 {
1391         int argc = *argcp;
1392         char **argv = *argvp;
1393         inet_prefix dst = {};
1394         inet_prefix src = {};
1395         char *upspecp = NULL;
1396
1397         while (1) {
1398                 if (strcmp(*argv, "src") == 0) {
1399                         NEXT_ARG();
1400
1401                         get_prefix(&src, *argv, preferred_family);
1402                         if (src.family == AF_UNSPEC)
1403                                 invarg("value after \"src\" has an unrecognized address family", *argv);
1404                         sel->family = src.family;
1405
1406                         memcpy(&sel->saddr, &src.data, sizeof(sel->saddr));
1407                         sel->prefixlen_s = src.bitlen;
1408
1409                         filter.sel_src_mask = src.bitlen;
1410
1411                 } else if (strcmp(*argv, "dst") == 0) {
1412                         NEXT_ARG();
1413
1414                         get_prefix(&dst, *argv, preferred_family);
1415                         if (dst.family == AF_UNSPEC)
1416                                 invarg("value after \"dst\" has an unrecognized address family", *argv);
1417                         sel->family = dst.family;
1418
1419                         memcpy(&sel->daddr, &dst.data, sizeof(sel->daddr));
1420                         sel->prefixlen_d = dst.bitlen;
1421
1422                         filter.sel_dst_mask = dst.bitlen;
1423
1424                 } else if (strcmp(*argv, "dev") == 0) {
1425                         int ifindex;
1426
1427                         NEXT_ARG();
1428
1429                         if (strcmp(*argv, "none") == 0)
1430                                 ifindex = 0;
1431                         else {
1432                                 ifindex = ll_name_to_index(*argv);
1433                                 if (ifindex <= 0)
1434                                         invarg("DEV value is invalid", *argv);
1435                         }
1436                         sel->ifindex = ifindex;
1437
1438                         filter.sel_dev_mask = XFRM_FILTER_MASK_FULL;
1439
1440                 } else {
1441                         if (upspecp) {
1442                                 PREV_ARG(); /* back track */
1443                                 break;
1444                         } else {
1445                                 upspecp = *argv;
1446                                 xfrm_selector_upspec_parse(sel, &argc, &argv);
1447                         }
1448                 }
1449
1450                 if (!NEXT_ARG_OK())
1451                         break;
1452
1453                 NEXT_ARG();
1454         }
1455
1456         if (src.family && dst.family && (src.family != dst.family))
1457                 invarg("the same address family is required between values after \"src\" and \"dst\"", *argv);
1458
1459         if (argc == *argcp)
1460                 missarg("SELECTOR");
1461
1462         *argcp = argc;
1463         *argvp = argv;
1464
1465         return 0;
1466 }
1467
1468 int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
1469                             int *argcp, char ***argvp)
1470 {
1471         int argc = *argcp;
1472         char **argv = *argvp;
1473         int ret;
1474
1475         if (strcmp(*argv, "time-soft") == 0) {
1476                 NEXT_ARG();
1477                 ret = get_u64(&lft->soft_add_expires_seconds, *argv, 0);
1478                 if (ret)
1479                         invarg("value after \"time-soft\" is invalid", *argv);
1480         } else if (strcmp(*argv, "time-hard") == 0) {
1481                 NEXT_ARG();
1482                 ret = get_u64(&lft->hard_add_expires_seconds, *argv, 0);
1483                 if (ret)
1484                         invarg("value after \"time-hard\" is invalid", *argv);
1485         } else if (strcmp(*argv, "time-use-soft") == 0) {
1486                 NEXT_ARG();
1487                 ret = get_u64(&lft->soft_use_expires_seconds, *argv, 0);
1488                 if (ret)
1489                         invarg("value after \"time-use-soft\" is invalid", *argv);
1490         } else if (strcmp(*argv, "time-use-hard") == 0) {
1491                 NEXT_ARG();
1492                 ret = get_u64(&lft->hard_use_expires_seconds, *argv, 0);
1493                 if (ret)
1494                         invarg("value after \"time-use-hard\" is invalid", *argv);
1495         } else if (strcmp(*argv, "byte-soft") == 0) {
1496                 NEXT_ARG();
1497                 ret = get_u64(&lft->soft_byte_limit, *argv, 0);
1498                 if (ret)
1499                         invarg("value after \"byte-soft\" is invalid", *argv);
1500         } else if (strcmp(*argv, "byte-hard") == 0) {
1501                 NEXT_ARG();
1502                 ret = get_u64(&lft->hard_byte_limit, *argv, 0);
1503                 if (ret)
1504                         invarg("value after \"byte-hard\" is invalid", *argv);
1505         } else if (strcmp(*argv, "packet-soft") == 0) {
1506                 NEXT_ARG();
1507                 ret = get_u64(&lft->soft_packet_limit, *argv, 0);
1508                 if (ret)
1509                         invarg("value after \"packet-soft\" is invalid", *argv);
1510         } else if (strcmp(*argv, "packet-hard") == 0) {
1511                 NEXT_ARG();
1512                 ret = get_u64(&lft->hard_packet_limit, *argv, 0);
1513                 if (ret)
1514                         invarg("value after \"packet-hard\" is invalid", *argv);
1515         } else
1516                 invarg("LIMIT value is invalid", *argv);
1517
1518         *argcp = argc;
1519         *argvp = argv;
1520
1521         return 0;
1522 }
1523
1524 int do_xfrm(int argc, char **argv)
1525 {
1526         memset(&filter, 0, sizeof(filter));
1527
1528         if (argc < 1)
1529                 usage();
1530
1531         if (matches(*argv, "state") == 0 ||
1532             matches(*argv, "sa") == 0)
1533                 return do_xfrm_state(argc-1, argv+1);
1534         else if (matches(*argv, "policy") == 0)
1535                 return do_xfrm_policy(argc-1, argv+1);
1536         else if (matches(*argv, "monitor") == 0)
1537                 return do_xfrm_monitor(argc-1, argv+1);
1538         else if (matches(*argv, "help") == 0) {
1539                 usage();
1540                 fprintf(stderr, "xfrm Object \"%s\" is unknown.\n", *argv);
1541                 exit(-1);
1542         }
1543         usage();
1544 }