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 #include <linux/udp.h>
  38
  39 #include "utils.h"
  40 #include "xfrm.h"
  41 #include "ip_common.h"
  42
  43 #define STRBUF_SIZE     (128)
  44
  45 struct xfrm_filter filter;
  46
  47 static void usage(void) __attribute__((noreturn));
  48
  49 static void usage(void)
  50 {
  51         fprintf(stderr,
  52                 "Usage: ip xfrm XFRM-OBJECT { COMMAND | help }\n"
  53                 "where  XFRM-OBJECT := state | policy | monitor\n");
  54         exit(-1);
  55 }
  56
  57 /* This is based on utils.c(inet_addr_match) */
  58 int xfrm_addr_match(xfrm_address_t *x1, xfrm_address_t *x2, int bits)
  59 {
  60         __u32 *a1 = (__u32 *)x1;
  61         __u32 *a2 = (__u32 *)x2;
  62         int words = bits >> 0x05;
  63
  64         bits &= 0x1f;
  65
  66         if (words)
  67                 if (memcmp(a1, a2, words << 2))
  68                         return -1;
  69
  70         if (bits) {
  71                 __u32 w1, w2;
  72                 __u32 mask;
  73
  74                 w1 = a1[words];
  75                 w2 = a2[words];
  76
  77                 mask = htonl((0xffffffff) << (0x20 - bits));
  78
  79                 if ((w1 ^ w2) & mask)
  80                         return 1;
  81         }
  82
  83         return 0;
  84 }
  85
  86 int xfrm_xfrmproto_is_ipsec(__u8 proto)
  87 {
  88         return (proto ==  IPPROTO_ESP ||
  89                 proto ==  IPPROTO_AH  ||
  90                 proto ==  IPPROTO_COMP);
  91 }
  92
  93 int xfrm_xfrmproto_is_ro(__u8 proto)
  94 {
  95         return (proto ==  IPPROTO_ROUTING ||
  96                 proto ==  IPPROTO_DSTOPTS);
  97 }
  98
  99 struct typeent {
 100         const char *t_name;
 101         int t_type;
 102 };
 103
 104 static const struct typeent xfrmproto_types[] = {
 105         { "esp", IPPROTO_ESP }, { "ah", IPPROTO_AH }, { "comp", IPPROTO_COMP },
 106         { "route2", IPPROTO_ROUTING }, { "hao", IPPROTO_DSTOPTS },
 107         { "ipsec-any", IPSEC_PROTO_ANY },
 108         { NULL, -1 }
 109 };
 110
 111 int xfrm_xfrmproto_getbyname(char *name)
 112 {
 113         int i;
 114
 115         for (i = 0; ; i++) {
 116                 const struct typeent *t = &xfrmproto_types[i];
 117
 118                 if (!t->t_name || t->t_type == -1)
 119                         break;
 120
 121                 if (strcmp(t->t_name, name) == 0)
 122                         return t->t_type;
 123         }
 124
 125         return -1;
 126 }
 127
 128 const char *strxf_xfrmproto(__u8 proto)
 129 {
 130         static char str[16];
 131         int i;
 132
 133         for (i = 0; ; i++) {
 134                 const struct typeent *t = &xfrmproto_types[i];
 135
 136                 if (!t->t_name || t->t_type == -1)
 137                         break;
 138
 139                 if (t->t_type == proto)
 140                         return t->t_name;
 141         }
 142
 143         sprintf(str, "%u", proto);
 144         return str;
 145 }
 146
 147 static const struct typeent algo_types[] = {
 148         { "enc", XFRMA_ALG_CRYPT }, { "auth", XFRMA_ALG_AUTH },
 149         { "comp", XFRMA_ALG_COMP }, { "aead", XFRMA_ALG_AEAD },
 150         { "auth-trunc", XFRMA_ALG_AUTH_TRUNC },
 151         { NULL, -1 }
 152 };
 153
 154 int xfrm_algotype_getbyname(char *name)
 155 {
 156         int i;
 157
 158         for (i = 0; ; i++) {
 159                 const struct typeent *t = &algo_types[i];
 160
 161                 if (!t->t_name || t->t_type == -1)
 162                         break;
 163
 164                 if (strcmp(t->t_name, name) == 0)
 165                         return t->t_type;
 166         }
 167
 168         return -1;
 169 }
 170
 171 const char *strxf_algotype(int type)
 172 {
 173         static char str[32];
 174         int i;
 175
 176         for (i = 0; ; i++) {
 177                 const struct typeent *t = &algo_types[i];
 178
 179                 if (!t->t_name || t->t_type == -1)
 180                         break;
 181
 182                 if (t->t_type == type)
 183                         return t->t_name;
 184         }
 185
 186         sprintf(str, "%d", type);
 187         return str;
 188 }
 189
 190 static const char *strxf_mask8(__u8 mask)
 191 {
 192         static char str[16];
 193         const int sn = sizeof(mask) * 8 - 1;
 194         __u8 b;
 195         int i = 0;
 196
 197         for (b = (1 << sn); b > 0; b >>= 1)
 198                 str[i++] = ((b & mask) ? '1' : '0');
 199         str[i] = '\0';
 200
 201         return str;
 202 }
 203
 204 const char *strxf_mask32(__u32 mask)
 205 {
 206         static char str[16];
 207
 208         sprintf(str, "%.8x", mask);
 209
 210         return str;
 211 }
 212
 213 static const char *strxf_share(__u8 share)
 214 {
 215         static char str[32];
 216
 217         switch (share) {
 218         case XFRM_SHARE_ANY:
 219                 strcpy(str, "any");
 220                 break;
 221         case XFRM_SHARE_SESSION:
 222                 strcpy(str, "session");
 223                 break;
 224         case XFRM_SHARE_USER:
 225                 strcpy(str, "user");
 226                 break;
 227         case XFRM_SHARE_UNIQUE:
 228                 strcpy(str, "unique");
 229                 break;
 230         default:
 231                 sprintf(str, "%u", share);
 232                 break;
 233         }
 234
 235         return str;
 236 }
 237
 238 const char *strxf_proto(__u8 proto)
 239 {
 240         static char buf[32];
 241         struct protoent *pp;
 242         const char *p;
 243
 244         pp = getprotobynumber(proto);
 245         if (pp)
 246                 p = pp->p_name;
 247         else {
 248                 sprintf(buf, "%u", proto);
 249                 p = buf;
 250         }
 251
 252         return p;
 253 }
 254
 255 const char *strxf_ptype(__u8 ptype)
 256 {
 257         static char str[16];
 258
 259         switch (ptype) {
 260         case XFRM_POLICY_TYPE_MAIN:
 261                 strcpy(str, "main");
 262                 break;
 263         case XFRM_POLICY_TYPE_SUB:
 264                 strcpy(str, "sub");
 265                 break;
 266         default:
 267                 sprintf(str, "%u", ptype);
 268                 break;
 269         }
 270
 271         return str;
 272 }
 273
 274 static void xfrm_id_info_print(xfrm_address_t *saddr, struct xfrm_id *id,
 275                         __u8 mode, __u32 reqid, __u16 family, int force_spi,
 276                         FILE *fp, const char *prefix, const char *title)
 277 {
 278         if (title)
 279                 fputs(title, fp);
 280
 281         fprintf(fp, "src %s ", rt_addr_n2a(family, sizeof(*saddr), saddr));
 282         fprintf(fp, "dst %s", rt_addr_n2a(family, sizeof(id->daddr), &id->daddr));
 283         fprintf(fp, "%s", _SL_);
 284
 285         if (prefix)
 286                 fputs(prefix, fp);
 287         fprintf(fp, "\t");
 288
 289         fprintf(fp, "proto %s ", strxf_xfrmproto(id->proto));
 290
 291         if (show_stats > 0 || force_spi || id->spi) {
 292                 __u32 spi = ntohl(id->spi);
 293
 294                 fprintf(fp, "spi 0x%08x", spi);
 295                 if (show_stats > 0)
 296                         fprintf(fp, "(%u)", spi);
 297                 fprintf(fp, " ");
 298         }
 299
 300         fprintf(fp, "reqid %u", reqid);
 301         if (show_stats > 0)
 302                 fprintf(fp, "(0x%08x)", reqid);
 303         fprintf(fp, " ");
 304
 305         fprintf(fp, "mode ");
 306         switch (mode) {
 307         case XFRM_MODE_TRANSPORT:
 308                 fprintf(fp, "transport");
 309                 break;
 310         case XFRM_MODE_TUNNEL:
 311                 fprintf(fp, "tunnel");
 312                 break;
 313         case XFRM_MODE_ROUTEOPTIMIZATION:
 314                 fprintf(fp, "ro");
 315                 break;
 316         case XFRM_MODE_IN_TRIGGER:
 317                 fprintf(fp, "in_trigger");
 318                 break;
 319         case XFRM_MODE_BEET:
 320                 fprintf(fp, "beet");
 321                 break;
 322         default:
 323                 fprintf(fp, "%u", mode);
 324                 break;
 325         }
 326         fprintf(fp, "%s", _SL_);
 327 }
 328
 329 static const char *strxf_limit(__u64 limit)
 330 {
 331         static char str[32];
 332
 333         if (limit == XFRM_INF)
 334                 strcpy(str, "(INF)");
 335         else
 336                 sprintf(str, "%llu", (unsigned long long) limit);
 337
 338         return str;
 339 }
 340
 341 static void xfrm_stats_print(struct xfrm_stats *s, FILE *fp,
 342                              const char *prefix)
 343 {
 344         if (prefix)
 345                 fputs(prefix, fp);
 346         fprintf(fp, "stats:%s", _SL_);
 347
 348         if (prefix)
 349                 fputs(prefix, fp);
 350         fprintf(fp, "  replay-window %u replay %u failed %u%s",
 351                 s->replay_window, s->replay, s->integrity_failed, _SL_);
 352 }
 353
 354 static const char *strxf_time(__u64 time)
 355 {
 356         static char str[32];
 357
 358         if (time == 0)
 359                 strcpy(str, "-");
 360         else {
 361                 time_t t;
 362                 struct tm *tp;
 363
 364                 /* XXX: treat time in the same manner of kernel's
 365                  * net/xfrm/xfrm_{user,state}.c
 366                  */
 367                 t = (long)time;
 368                 tp = localtime(&t);
 369
 370                 strftime(str, sizeof(str), "%Y-%m-%d %T", tp);
 371         }
 372
 373         return str;
 374 }
 375
 376 static void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg,
 377                          struct xfrm_lifetime_cur *cur,
 378                          FILE *fp, const char *prefix)
 379 {
 380         if (cfg) {
 381                 if (prefix)
 382                         fputs(prefix, fp);
 383                 fprintf(fp, "lifetime config:%s", _SL_);
 384
 385                 if (prefix)
 386                         fputs(prefix, fp);
 387                 fprintf(fp, "  limit: soft %s(bytes),",
 388                         strxf_limit(cfg->soft_byte_limit));
 389                 fprintf(fp, " hard %s(bytes)%s",
 390                         strxf_limit(cfg->hard_byte_limit), _SL_);
 391
 392                 if (prefix)
 393                         fputs(prefix, fp);
 394                 fprintf(fp, "  limit: soft %s(packets),",
 395                         strxf_limit(cfg->soft_packet_limit));
 396                 fprintf(fp, " hard %s(packets)%s",
 397                         strxf_limit(cfg->hard_packet_limit), _SL_);
 398
 399                 if (prefix)
 400                         fputs(prefix, fp);
 401                 fprintf(fp, "  expire add: soft %llu(sec), hard %llu(sec)%s",
 402                         (unsigned long long) cfg->soft_add_expires_seconds,
 403                         (unsigned long long) cfg->hard_add_expires_seconds,
 404                         _SL_);
 405
 406                 if (prefix)
 407                         fputs(prefix, fp);
 408                 fprintf(fp, "  expire use: soft %llu(sec), hard %llu(sec)%s",
 409                         (unsigned long long) cfg->soft_use_expires_seconds,
 410                         (unsigned long long) cfg->hard_use_expires_seconds,
 411                         _SL_);
 412         }
 413         if (cur) {
 414                 if (prefix)
 415                         fputs(prefix, fp);
 416                 fprintf(fp, "lifetime current:%s", _SL_);
 417
 418                 if (prefix)
 419                         fputs(prefix, fp);
 420                 fprintf(fp, "  %llu(bytes), %llu(packets)%s",
 421                         (unsigned long long) cur->bytes,
 422                         (unsigned long long) cur->packets,
 423                          _SL_);
 424
 425                 if (prefix)
 426                         fputs(prefix, fp);
 427                 fprintf(fp, "  add %s ", strxf_time(cur->add_time));
 428                 fprintf(fp, "use %s%s", strxf_time(cur->use_time), _SL_);
 429         }
 430 }
 431
 432 void xfrm_selector_print(struct xfrm_selector *sel, __u16 family,
 433                          FILE *fp, const char *prefix)
 434 {
 435         __u16 f;
 436
 437         f = sel->family;
 438         if (f == AF_UNSPEC)
 439                 f = family;
 440         if (f == AF_UNSPEC)
 441                 f = preferred_family;
 442
 443         if (prefix)
 444                 fputs(prefix, fp);
 445
 446         fprintf(fp, "src %s/%u ",
 447                 rt_addr_n2a(f, sizeof(sel->saddr), &sel->saddr),
 448                 sel->prefixlen_s);
 449
 450         fprintf(fp, "dst %s/%u ",
 451                 rt_addr_n2a(f, sizeof(sel->daddr), &sel->daddr),
 452                 sel->prefixlen_d);
 453
 454         if (sel->proto)
 455                 fprintf(fp, "proto %s ", strxf_proto(sel->proto));
 456         switch (sel->proto) {
 457         case IPPROTO_TCP:
 458         case IPPROTO_UDP:
 459         case IPPROTO_SCTP:
 460         case IPPROTO_DCCP:
 461         default: /* XXX */
 462                 if (sel->sport_mask)
 463                         fprintf(fp, "sport %u ", ntohs(sel->sport));
 464                 if (sel->dport_mask)
 465                         fprintf(fp, "dport %u ", ntohs(sel->dport));
 466                 break;
 467         case IPPROTO_ICMP:
 468         case IPPROTO_ICMPV6:
 469                 /* type/code is stored at sport/dport in selector */
 470                 if (sel->sport_mask)
 471                         fprintf(fp, "type %u ", ntohs(sel->sport));
 472                 if (sel->dport_mask)
 473                         fprintf(fp, "code %u ", ntohs(sel->dport));
 474                 break;
 475         case IPPROTO_GRE:
 476                 if (sel->sport_mask || sel->dport_mask)
 477                         fprintf(fp, "key %u ",
 478                                 (((__u32)ntohs(sel->sport)) << 16) +
 479                                 ntohs(sel->dport));
 480                 break;
 481         case IPPROTO_MH:
 482                 if (sel->sport_mask)
 483                         fprintf(fp, "type %u ", ntohs(sel->sport));
 484                 if (sel->dport_mask) {
 485                         if (show_stats > 0)
 486                                 fprintf(fp, "(dport) 0x%.4x ", sel->dport);
 487                 }
 488                 break;
 489         }
 490
 491         if (sel->ifindex > 0)
 492                 fprintf(fp, "dev %s ", ll_index_to_name(sel->ifindex));
 493
 494         if (show_stats > 0)
 495                 fprintf(fp, "uid %u", sel->user);
 496
 497         fprintf(fp, "%s", _SL_);
 498 }
 499
 500 static void __xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
 501                               FILE *fp, const char *prefix, int newline,
 502                               bool nokeys)
 503 {
 504         int keylen;
 505         int i;
 506
 507         if (prefix)
 508                 fputs(prefix, fp);
 509
 510         fprintf(fp, "%s ", strxf_algotype(type));
 511
 512         if (len < sizeof(*algo)) {
 513                 fprintf(fp, "(ERROR truncated)");
 514                 goto fin;
 515         }
 516         len -= sizeof(*algo);
 517
 518         fprintf(fp, "%s ", algo->alg_name);
 519
 520         keylen = algo->alg_key_len / 8;
 521         if (len < keylen) {
 522                 fprintf(fp, "(ERROR truncated)");
 523                 goto fin;
 524         }
 525
 526         if (nokeys)
 527                 fprintf(fp, "<<Keys hidden>>");
 528         else if (keylen > 0) {
 529                 fprintf(fp, "0x");
 530                 for (i = 0; i < keylen; i++)
 531                         fprintf(fp, "%.2x", (unsigned char)algo->alg_key[i]);
 532
 533                 if (show_stats > 0)
 534                         fprintf(fp, " (%d bits)", algo->alg_key_len);
 535         }
 536
 537  fin:
 538         if (newline)
 539                 fprintf(fp, "%s", _SL_);
 540 }
 541
 542 static inline void xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
 543                                    FILE *fp, const char *prefix, bool nokeys)
 544 {
 545         return __xfrm_algo_print(algo, type, len, fp, prefix, 1, nokeys);
 546 }
 547
 548 static void xfrm_aead_print(struct xfrm_algo_aead *algo, int len,
 549                             FILE *fp, const char *prefix, bool nokeys)
 550 {
 551         struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8);
 552
 553         memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name));
 554         base_algo->alg_key_len = algo->alg_key_len;
 555         memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8);
 556
 557         __xfrm_algo_print(base_algo, XFRMA_ALG_AEAD, len, fp, prefix, 0,
 558                           nokeys);
 559
 560         fprintf(fp, " %d", algo->alg_icv_len);
 561
 562         fprintf(fp, "%s", _SL_);
 563 }
 564
 565 static void xfrm_auth_trunc_print(struct xfrm_algo_auth *algo, int len,
 566                                   FILE *fp, const char *prefix, bool nokeys)
 567 {
 568         struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8);
 569
 570         memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name));
 571         base_algo->alg_key_len = algo->alg_key_len;
 572         memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8);
 573
 574         __xfrm_algo_print(base_algo, XFRMA_ALG_AUTH_TRUNC, len, fp, prefix, 0,
 575                           nokeys);
 576
 577         fprintf(fp, " %d", algo->alg_trunc_len);
 578
 579         fprintf(fp, "%s", _SL_);
 580 }
 581
 582 static void xfrm_tmpl_print(struct xfrm_user_tmpl *tmpls, int len,
 583                             FILE *fp, const char *prefix)
 584 {
 585         int ntmpls = len / sizeof(struct xfrm_user_tmpl);
 586         int i;
 587
 588         if (ntmpls <= 0) {
 589                 if (prefix)
 590                         fputs(prefix, fp);
 591                 fprintf(fp, "(ERROR \"tmpl\" truncated)");
 592                 fprintf(fp, "%s", _SL_);
 593                 return;
 594         }
 595
 596         for (i = 0; i < ntmpls; i++) {
 597                 struct xfrm_user_tmpl *tmpl = &tmpls[i];
 598
 599                 if (prefix)
 600                         fputs(prefix, fp);
 601
 602                 xfrm_id_info_print(&tmpl->saddr, &tmpl->id, tmpl->mode,
 603                                    tmpl->reqid, tmpl->family, 0, fp, prefix, "tmpl ");
 604
 605                 if (show_stats > 0 || tmpl->optional) {
 606                         if (prefix)
 607                                 fputs(prefix, fp);
 608                         fprintf(fp, "\t");
 609                         switch (tmpl->optional) {
 610                         case 0:
 611                                 if (show_stats > 0)
 612                                         fprintf(fp, "level required ");
 613                                 break;
 614                         case 1:
 615                                 fprintf(fp, "level use ");
 616                                 break;
 617                         default:
 618                                 fprintf(fp, "level %u ", tmpl->optional);
 619                                 break;
 620                         }
 621
 622                         if (show_stats > 0)
 623                                 fprintf(fp, "share %s ", strxf_share(tmpl->share));
 624
 625                         fprintf(fp, "%s", _SL_);
 626                 }
 627
 628                 if (show_stats > 0) {
 629                         if (prefix)
 630                                 fputs(prefix, fp);
 631                         fprintf(fp, "\t");
 632                         fprintf(fp, "%s-mask %s ",
 633                                 strxf_algotype(XFRMA_ALG_CRYPT),
 634                                 strxf_mask32(tmpl->ealgos));
 635                         fprintf(fp, "%s-mask %s ",
 636                                 strxf_algotype(XFRMA_ALG_AUTH),
 637                                 strxf_mask32(tmpl->aalgos));
 638                         fprintf(fp, "%s-mask %s",
 639                                 strxf_algotype(XFRMA_ALG_COMP),
 640                                 strxf_mask32(tmpl->calgos));
 641
 642                         fprintf(fp, "%s", _SL_);
 643                 }
 644         }
 645 }
 646
 647 static void xfrm_output_mark_print(struct rtattr *tb[], FILE *fp)
 648 {
 649         __u32 output_mark = rta_getattr_u32(tb[XFRMA_OUTPUT_MARK]);
 650
 651         fprintf(fp, "output-mark 0x%x", output_mark);
 652 }
 653
 654 int xfrm_parse_mark(struct xfrm_mark *mark, int *argcp, char ***argvp)
 655 {
 656         int argc = *argcp;
 657         char **argv = *argvp;
 658
 659         NEXT_ARG();
 660         if (get_u32(&mark->v, *argv, 0)) {
 661                 invarg("MARK value is invalid\n", *argv);
 662         }
 663         if (argc > 1)
 664                 NEXT_ARG();
 665         else { /* last entry on parse line */
 666                 mark->m = 0xffffffff;
 667                 goto done;
 668         }
 669
 670         if (strcmp(*argv, "mask") == 0) {
 671                 NEXT_ARG();
 672                 if (get_u32(&mark->m, *argv, 0)) {
 673                         invarg("MASK value is invalid\n", *argv);
 674                 }
 675         } else {
 676                 mark->m = 0xffffffff;
 677                 PREV_ARG();
 678         }
 679
 680 done:
 681         *argcp = argc;
 682         *argvp = argv;
 683
 684         return 0;
 685 }
 686
 687 void xfrm_xfrma_print(struct rtattr *tb[], __u16 family,
 688                       FILE *fp, const char *prefix, bool nokeys)
 689 {
 690         if (tb[XFRMA_MARK]) {
 691                 struct rtattr *rta = tb[XFRMA_MARK];
 692                 struct xfrm_mark *m = RTA_DATA(rta);
 693
 694                 fprintf(fp, "\tmark %#x/%#x ", m->v, m->m);
 695
 696                 if (tb[XFRMA_OUTPUT_MARK])
 697                         xfrm_output_mark_print(tb, fp);
 698                 fprintf(fp, "%s", _SL_);
 699         } else if (tb[XFRMA_OUTPUT_MARK]) {
 700                 fprintf(fp, "\t");
 701
 702                 xfrm_output_mark_print(tb, fp);
 703                 fprintf(fp, "%s", _SL_);
 704         }
 705
 706         if (tb[XFRMA_ALG_AUTH] && !tb[XFRMA_ALG_AUTH_TRUNC]) {
 707                 struct rtattr *rta = tb[XFRMA_ALG_AUTH];
 708
 709                 xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_AUTH, RTA_PAYLOAD(rta),
 710                                 fp, prefix, nokeys);
 711         }
 712
 713         if (tb[XFRMA_ALG_AUTH_TRUNC]) {
 714                 struct rtattr *rta = tb[XFRMA_ALG_AUTH_TRUNC];
 715
 716                 xfrm_auth_trunc_print(RTA_DATA(rta), RTA_PAYLOAD(rta), fp,
 717                                       prefix, nokeys);
 718         }
 719
 720         if (tb[XFRMA_ALG_AEAD]) {
 721                 struct rtattr *rta = tb[XFRMA_ALG_AEAD];
 722
 723                 xfrm_aead_print(RTA_DATA(rta), RTA_PAYLOAD(rta), fp, prefix,
 724                                 nokeys);
 725         }
 726
 727         if (tb[XFRMA_ALG_CRYPT]) {
 728                 struct rtattr *rta = tb[XFRMA_ALG_CRYPT];
 729
 730                 xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_CRYPT,
 731                                 RTA_PAYLOAD(rta), fp, prefix, nokeys);
 732         }
 733
 734         if (tb[XFRMA_ALG_COMP]) {
 735                 struct rtattr *rta = tb[XFRMA_ALG_COMP];
 736
 737                 xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_COMP, RTA_PAYLOAD(rta),
 738                                 fp, prefix, nokeys);
 739         }
 740
 741         if (tb[XFRMA_ENCAP]) {
 742                 struct xfrm_encap_tmpl *e;
 743
 744                 if (prefix)
 745                         fputs(prefix, fp);
 746                 fprintf(fp, "encap ");
 747
 748                 if (RTA_PAYLOAD(tb[XFRMA_ENCAP]) < sizeof(*e)) {
 749                         fprintf(fp, "(ERROR truncated)");
 750                         fprintf(fp, "%s", _SL_);
 751                         return;
 752                 }
 753                 e = RTA_DATA(tb[XFRMA_ENCAP]);
 754
 755                 fprintf(fp, "type ");
 756                 switch (e->encap_type) {
 757                 case UDP_ENCAP_ESPINUDP_NON_IKE:
 758                         fprintf(fp, "espinudp-nonike ");
 759                         break;
 760                 case UDP_ENCAP_ESPINUDP:
 761                         fprintf(fp, "espinudp ");
 762                         break;
 763                 case TCP_ENCAP_ESPINTCP:
 764                         fprintf(fp, "espintcp ");
 765                         break;
 766                 default:
 767                         fprintf(fp, "%u ", e->encap_type);
 768                         break;
 769                 }
 770                 fprintf(fp, "sport %u ", ntohs(e->encap_sport));
 771                 fprintf(fp, "dport %u ", ntohs(e->encap_dport));
 772
 773                 fprintf(fp, "addr %s",
 774                         rt_addr_n2a(family, sizeof(e->encap_oa), &e->encap_oa));
 775                 fprintf(fp, "%s", _SL_);
 776         }
 777
 778         if (tb[XFRMA_TMPL]) {
 779                 struct rtattr *rta = tb[XFRMA_TMPL];
 780
 781                 xfrm_tmpl_print(RTA_DATA(rta),
 782                                 RTA_PAYLOAD(rta), fp, prefix);
 783         }
 784
 785         if (tb[XFRMA_COADDR]) {
 786                 const xfrm_address_t *coa;
 787
 788                 if (prefix)
 789                         fputs(prefix, fp);
 790                 fprintf(fp, "coa ");
 791
 792                 coa = RTA_DATA(tb[XFRMA_COADDR]);
 793                 if (RTA_PAYLOAD(tb[XFRMA_COADDR]) < sizeof(*coa)) {
 794                         fprintf(fp, "(ERROR truncated)");
 795                         fprintf(fp, "%s", _SL_);
 796                         return;
 797                 }
 798
 799                 fprintf(fp, "%s",
 800                         rt_addr_n2a(family, sizeof(*coa), coa));
 801                 fprintf(fp, "%s", _SL_);
 802         }
 803
 804         if (tb[XFRMA_LASTUSED]) {
 805                 __u64 lastused;
 806
 807                 if (prefix)
 808                         fputs(prefix, fp);
 809                 fprintf(fp, "lastused ");
 810
 811                 if (RTA_PAYLOAD(tb[XFRMA_LASTUSED]) < sizeof(lastused)) {
 812                         fprintf(fp, "(ERROR truncated)");
 813                         fprintf(fp, "%s", _SL_);
 814                         return;
 815                 }
 816
 817                 lastused = rta_getattr_u64(tb[XFRMA_LASTUSED]);
 818
 819                 fprintf(fp, "%s", strxf_time(lastused));
 820                 fprintf(fp, "%s", _SL_);
 821         }
 822
 823         if (tb[XFRMA_REPLAY_VAL]) {
 824                 struct xfrm_replay_state *replay;
 825
 826                 if (prefix)
 827                         fputs(prefix, fp);
 828                 fprintf(fp, "anti-replay context: ");
 829
 830                 if (RTA_PAYLOAD(tb[XFRMA_REPLAY_VAL]) < sizeof(*replay)) {
 831                         fprintf(fp, "(ERROR truncated)");
 832                         fprintf(fp, "%s", _SL_);
 833                         return;
 834                 }
 835
 836                 replay = RTA_DATA(tb[XFRMA_REPLAY_VAL]);
 837                 fprintf(fp, "seq 0x%x, oseq 0x%x, bitmap 0x%08x",
 838                         replay->seq, replay->oseq, replay->bitmap);
 839                 fprintf(fp, "%s", _SL_);
 840         }
 841
 842         if (tb[XFRMA_REPLAY_ESN_VAL]) {
 843                 struct xfrm_replay_state_esn *replay;
 844                 unsigned int i, j;
 845
 846                 if (prefix)
 847                         fputs(prefix, fp);
 848                 fprintf(fp, "anti-replay esn context:");
 849
 850                 if (RTA_PAYLOAD(tb[XFRMA_REPLAY_ESN_VAL]) < sizeof(*replay)) {
 851                         fprintf(fp, "(ERROR truncated)");
 852                         fprintf(fp, "%s", _SL_);
 853                         return;
 854                 }
 855                 fprintf(fp, "%s", _SL_);
 856
 857                 replay = RTA_DATA(tb[XFRMA_REPLAY_ESN_VAL]);
 858                 if (prefix)
 859                         fputs(prefix, fp);
 860                 fprintf(fp, " seq-hi 0x%x, seq 0x%x, oseq-hi 0x%0x, oseq 0x%0x",
 861                         replay->seq_hi, replay->seq, replay->oseq_hi,
 862                         replay->oseq);
 863                 fprintf(fp, "%s", _SL_);
 864                 if (prefix)
 865                         fputs(prefix, fp);
 866                 fprintf(fp, " replay_window %u, bitmap-length %u",
 867                         replay->replay_window, replay->bmp_len);
 868                 for (i = replay->bmp_len, j = 0; i; i--) {
 869                         if (j++ % 8 == 0) {
 870                                 fprintf(fp, "%s", _SL_);
 871                                 if (prefix)
 872                                         fputs(prefix, fp);
 873                                 fprintf(fp, " ");
 874                         }
 875                         fprintf(fp, "%08x ", replay->bmp[i - 1]);
 876                 }
 877                 fprintf(fp, "%s", _SL_);
 878         }
 879         if (tb[XFRMA_OFFLOAD_DEV]) {
 880                 struct xfrm_user_offload *xuo;
 881
 882                 if (prefix)
 883                         fputs(prefix, fp);
 884                 fprintf(fp, "crypto offload parameters: ");
 885
 886                 if (RTA_PAYLOAD(tb[XFRMA_OFFLOAD_DEV]) < sizeof(*xuo)) {
 887                         fprintf(fp, "(ERROR truncated)");
 888                         fprintf(fp, "%s", _SL_);
 889                         return;
 890                 }
 891
 892                 xuo = (struct xfrm_user_offload *)
 893                         RTA_DATA(tb[XFRMA_OFFLOAD_DEV]);
 894                 fprintf(fp, "dev %s dir %s", ll_index_to_name(xuo->ifindex),
 895                         (xuo->flags & XFRM_OFFLOAD_INBOUND) ? "in" : "out");
 896                 fprintf(fp, "%s", _SL_);
 897         }
 898         if (tb[XFRMA_IF_ID]) {
 899                 __u32 if_id = rta_getattr_u32(tb[XFRMA_IF_ID]);
 900
 901                 if (prefix)
 902                         fputs(prefix, fp);
 903                 fprintf(fp, "if_id %#x", if_id);
 904                 fprintf(fp, "%s", _SL_);
 905         }
 906 }
 907
 908 static int xfrm_selector_iszero(struct xfrm_selector *s)
 909 {
 910         struct xfrm_selector s0 = {};
 911
 912         return (memcmp(&s0, s, sizeof(s0)) == 0);
 913 }
 914
 915 void xfrm_state_info_print(struct xfrm_usersa_info *xsinfo,
 916                             struct rtattr *tb[], FILE *fp, const char *prefix,
 917                             const char *title, bool nokeys)
 918 {
 919         char buf[STRBUF_SIZE] = {};
 920         int force_spi = xfrm_xfrmproto_is_ipsec(xsinfo->id.proto);
 921
 922         xfrm_id_info_print(&xsinfo->saddr, &xsinfo->id, xsinfo->mode,
 923                            xsinfo->reqid, xsinfo->family, force_spi, fp,
 924                            prefix, title);
 925
 926         if (prefix)
 927                 strlcat(buf, prefix, sizeof(buf));
 928         strlcat(buf, "\t", sizeof(buf));
 929
 930         fputs(buf, fp);
 931         fprintf(fp, "replay-window %u ", xsinfo->replay_window);
 932         if (show_stats > 0)
 933                 fprintf(fp, "seq 0x%08u ", xsinfo->seq);
 934         if (show_stats > 0 || xsinfo->flags) {
 935                 __u8 flags = xsinfo->flags;
 936
 937                 fprintf(fp, "flag ");
 938                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOECN, "noecn");
 939                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_DECAP_DSCP, "decap-dscp");
 940                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOPMTUDISC, "nopmtudisc");
 941                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_WILDRECV, "wildrecv");
 942                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ICMP, "icmp");
 943                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_AF_UNSPEC, "af-unspec");
 944                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ALIGN4, "align4");
 945                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ESN, "esn");
 946                 if (flags)
 947                         fprintf(fp, "%x", flags);
 948         }
 949         if (show_stats > 0 && tb[XFRMA_SA_EXTRA_FLAGS]) {
 950                 __u32 extra_flags = rta_getattr_u32(tb[XFRMA_SA_EXTRA_FLAGS]);
 951
 952                 fprintf(fp, "extra_flag ");
 953                 XFRM_FLAG_PRINT(fp, extra_flags,
 954                                 XFRM_SA_XFLAG_DONT_ENCAP_DSCP,
 955                                 "dont-encap-dscp");
 956                 XFRM_FLAG_PRINT(fp, extra_flags,
 957                                 XFRM_SA_XFLAG_OSEQ_MAY_WRAP,
 958                                 "oseq-may-wrap");
 959                 if (extra_flags)
 960                         fprintf(fp, "%x", extra_flags);
 961         }
 962         if (show_stats > 0)
 963                 fprintf(fp, " (0x%s)", strxf_mask8(xsinfo->flags));
 964         fprintf(fp, "%s", _SL_);
 965
 966         xfrm_xfrma_print(tb, xsinfo->family, fp, buf, nokeys);
 967
 968         if (!xfrm_selector_iszero(&xsinfo->sel)) {
 969                 char sbuf[STRBUF_SIZE];
 970
 971                 memcpy(sbuf, buf, sizeof(sbuf));
 972                 strlcat(sbuf, "sel ", sizeof(sbuf));
 973
 974                 xfrm_selector_print(&xsinfo->sel, xsinfo->family, fp, sbuf);
 975         }
 976
 977         if (show_stats > 0) {
 978                 xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, buf);
 979                 xfrm_stats_print(&xsinfo->stats, fp, buf);
 980         }
 981
 982         if (tb[XFRMA_SEC_CTX]) {
 983                 struct xfrm_user_sec_ctx *sctx;
 984
 985                 fprintf(fp, "\tsecurity context ");
 986
 987                 if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
 988                         fprintf(fp, "(ERROR truncated)");
 989
 990                 sctx = RTA_DATA(tb[XFRMA_SEC_CTX]);
 991
 992                 fprintf(fp, "%s %s", (char *)(sctx + 1), _SL_);
 993         }
 994
 995 }
 996
 997 void xfrm_policy_info_print(struct xfrm_userpolicy_info *xpinfo,
 998                             struct rtattr *tb[], FILE *fp, const char *prefix,
 999                             const char *title)
1000 {
1001         char buf[STRBUF_SIZE] = {};
1002
1003         xfrm_selector_print(&xpinfo->sel, preferred_family, fp, title);
1004
1005         if (tb[XFRMA_SEC_CTX]) {
1006                 struct xfrm_user_sec_ctx *sctx;
1007
1008                 fprintf(fp, "\tsecurity context ");
1009
1010                 if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
1011                         fprintf(fp, "(ERROR truncated)");
1012
1013                 sctx = RTA_DATA(tb[XFRMA_SEC_CTX]);
1014
1015                 fprintf(fp, "%s ", (char *)(sctx + 1));
1016                 fprintf(fp, "%s", _SL_);
1017         }
1018
1019         if (prefix)
1020                 strlcat(buf, prefix, sizeof(buf));
1021         strlcat(buf, "\t", sizeof(buf));
1022
1023         fputs(buf, fp);
1024         if (xpinfo->dir >= XFRM_POLICY_MAX) {
1025                 xpinfo->dir -= XFRM_POLICY_MAX;
1026                 fprintf(fp, "socket ");
1027         } else
1028                 fprintf(fp, "dir ");
1029
1030         switch (xpinfo->dir) {
1031         case XFRM_POLICY_IN:
1032                 fprintf(fp, "in");
1033                 break;
1034         case XFRM_POLICY_OUT:
1035                 fprintf(fp, "out");
1036                 break;
1037         case XFRM_POLICY_FWD:
1038                 fprintf(fp, "fwd");
1039                 break;
1040         default:
1041                 fprintf(fp, "%u", xpinfo->dir);
1042                 break;
1043         }
1044         fprintf(fp, " ");
1045
1046         switch (xpinfo->action) {
1047         case XFRM_POLICY_ALLOW:
1048                 if (show_stats > 0)
1049                         fprintf(fp, "action allow ");
1050                 break;
1051         case XFRM_POLICY_BLOCK:
1052                 fprintf(fp, "action block ");
1053                 break;
1054         default:
1055                 fprintf(fp, "action %u ", xpinfo->action);
1056                 break;
1057         }
1058
1059         if (show_stats)
1060                 fprintf(fp, "index %u ", xpinfo->index);
1061         fprintf(fp, "priority %u ", xpinfo->priority);
1062
1063         if (tb[XFRMA_POLICY_TYPE]) {
1064                 struct xfrm_userpolicy_type *upt;
1065
1066                 fprintf(fp, "ptype ");
1067
1068                 if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt))
1069                         fprintf(fp, "(ERROR truncated)");
1070
1071                 upt = RTA_DATA(tb[XFRMA_POLICY_TYPE]);
1072                 fprintf(fp, "%s ", strxf_ptype(upt->type));
1073         }
1074
1075         if (show_stats > 0)
1076                 fprintf(fp, "share %s ", strxf_share(xpinfo->share));
1077
1078         if (show_stats > 0 || xpinfo->flags) {
1079                 __u8 flags = xpinfo->flags;
1080
1081                 fprintf(fp, "flag ");
1082                 XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_LOCALOK, "localok");
1083                 XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_ICMP, "icmp");
1084                 if (flags)
1085                         fprintf(fp, "%x", flags);
1086         }
1087         if (show_stats > 0)
1088                 fprintf(fp, " (0x%s)", strxf_mask8(xpinfo->flags));
1089         fprintf(fp, "%s", _SL_);
1090
1091         if (show_stats > 0)
1092                 xfrm_lifetime_print(&xpinfo->lft, &xpinfo->curlft, fp, buf);
1093
1094         xfrm_xfrma_print(tb, xpinfo->sel.family, fp, buf, false);
1095 }
1096
1097 int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
1098                   int loose, int *argcp, char ***argvp)
1099 {
1100         int argc = *argcp;
1101         char **argv = *argvp;
1102         inet_prefix dst = {};
1103         inet_prefix src = {};
1104
1105         while (1) {
1106                 if (strcmp(*argv, "src") == 0) {
1107                         NEXT_ARG();
1108
1109                         get_prefix(&src, *argv, preferred_family);
1110                         if (src.family == AF_UNSPEC)
1111                                 invarg("value after \"src\" has an unrecognized address family", *argv);
1112                         if (family)
1113                                 *family = src.family;
1114
1115                         memcpy(saddr, &src.data, sizeof(*saddr));
1116
1117                         filter.id_src_mask = src.bitlen;
1118
1119                 } else if (strcmp(*argv, "dst") == 0) {
1120                         NEXT_ARG();
1121
1122                         get_prefix(&dst, *argv, preferred_family);
1123                         if (dst.family == AF_UNSPEC)
1124                                 invarg("value after \"dst\" has an unrecognized address family", *argv);
1125                         if (family)
1126                                 *family = dst.family;
1127
1128                         memcpy(&id->daddr, &dst.data, sizeof(id->daddr));
1129
1130                         filter.id_dst_mask = dst.bitlen;
1131
1132                 } else if (strcmp(*argv, "proto") == 0) {
1133                         int ret;
1134
1135                         NEXT_ARG();
1136
1137                         ret = xfrm_xfrmproto_getbyname(*argv);
1138                         if (ret < 0)
1139                                 invarg("XFRM-PROTO value is invalid", *argv);
1140
1141                         id->proto = (__u8)ret;
1142
1143                         filter.id_proto_mask = XFRM_FILTER_MASK_FULL;
1144
1145                 } else if (strcmp(*argv, "spi") == 0) {
1146                         NEXT_ARG();
1147                         if (get_be32(&id->spi, *argv, 0))
1148                                 invarg("SPI value is invalid", *argv);
1149
1150                         filter.id_spi_mask = XFRM_FILTER_MASK_FULL;
1151
1152                 } else {
1153                         PREV_ARG(); /* back track */
1154                         break;
1155                 }
1156
1157                 if (!NEXT_ARG_OK())
1158                         break;
1159                 NEXT_ARG();
1160         }
1161
1162         if (src.family && dst.family && (src.family != dst.family))
1163                 invarg("the same address family is required between values after \"src\" and \"dst\"", *argv);
1164
1165         if (id->spi && id->proto) {
1166                 if (xfrm_xfrmproto_is_ro(id->proto)) {
1167                         fprintf(stderr, "\"spi\" is invalid with XFRM-PROTO value \"%s\"\n",
1168                                 strxf_xfrmproto(id->proto));
1169                         exit(1);
1170                 } else if (id->proto == IPPROTO_COMP && ntohl(id->spi) >= 0x10000) {
1171                         fprintf(stderr, "SPI value is too large with XFRM-PROTO value \"%s\"\n",
1172                                 strxf_xfrmproto(id->proto));
1173                         exit(1);
1174                 }
1175         }
1176
1177         if (loose == 0 && id->proto == 0)
1178                 missarg("XFRM-PROTO");
1179         if (argc == *argcp)
1180                 missarg("ID");
1181
1182         *argcp = argc;
1183         *argvp = argv;
1184
1185         return 0;
1186 }
1187
1188 int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp)
1189 {
1190         int argc = *argcp;
1191         char **argv = *argvp;
1192
1193         if (matches(*argv, "transport") == 0)
1194                 *mode = XFRM_MODE_TRANSPORT;
1195         else if (matches(*argv, "tunnel") == 0)
1196                 *mode = XFRM_MODE_TUNNEL;
1197         else if (matches(*argv, "ro") == 0)
1198                 *mode = XFRM_MODE_ROUTEOPTIMIZATION;
1199         else if (matches(*argv, "in_trigger") == 0)
1200                 *mode = XFRM_MODE_IN_TRIGGER;
1201         else if (matches(*argv, "beet") == 0)
1202                 *mode = XFRM_MODE_BEET;
1203         else
1204                 invarg("MODE value is invalid", *argv);
1205
1206         *argcp = argc;
1207         *argvp = argv;
1208
1209         return 0;
1210 }
1211
1212 int xfrm_encap_type_parse(__u16 *type, int *argcp, char ***argvp)
1213 {
1214         int argc = *argcp;
1215         char **argv = *argvp;
1216
1217         if (strcmp(*argv, "espinudp-nonike") == 0)
1218                 *type = UDP_ENCAP_ESPINUDP_NON_IKE;
1219         else if (strcmp(*argv, "espinudp") == 0)
1220                 *type = UDP_ENCAP_ESPINUDP;
1221         else if (strcmp(*argv, "espintcp") == 0)
1222                 *type = TCP_ENCAP_ESPINTCP;
1223         else
1224                 invarg("ENCAP-TYPE value is invalid", *argv);
1225
1226         *argcp = argc;
1227         *argvp = argv;
1228
1229         return 0;
1230 }
1231
1232 /* NOTE: reqid is used by host-byte order */
1233 int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp)
1234 {
1235         int argc = *argcp;
1236         char **argv = *argvp;
1237
1238         if (get_u32(reqid, *argv, 0))
1239                 invarg("REQID value is invalid", *argv);
1240
1241         *argcp = argc;
1242         *argvp = argv;
1243
1244         return 0;
1245 }
1246
1247 static int xfrm_selector_upspec_parse(struct xfrm_selector *sel,
1248                                       int *argcp, char ***argvp)
1249 {
1250         int argc = *argcp;
1251         char **argv = *argvp;
1252         char *sportp = NULL;
1253         char *dportp = NULL;
1254         char *typep = NULL;
1255         char *codep = NULL;
1256         char *grekey = NULL;
1257
1258         while (1) {
1259                 if (strcmp(*argv, "proto") == 0) {
1260                         __u8 upspec;
1261
1262                         NEXT_ARG();
1263
1264                         if (strcmp(*argv, "any") == 0)
1265                                 upspec = 0;
1266                         else {
1267                                 struct protoent *pp;
1268
1269                                 pp = getprotobyname(*argv);
1270                                 if (pp)
1271                                         upspec = pp->p_proto;
1272                                 else {
1273                                         if (get_u8(&upspec, *argv, 0))
1274                                                 invarg("PROTO value is invalid", *argv);
1275                                 }
1276                         }
1277                         sel->proto = upspec;
1278
1279                         filter.upspec_proto_mask = XFRM_FILTER_MASK_FULL;
1280
1281                 } else if (strcmp(*argv, "sport") == 0) {
1282                         sportp = *argv;
1283
1284                         NEXT_ARG();
1285
1286                         if (get_be16(&sel->sport, *argv, 0))
1287                                 invarg("value after \"sport\" is invalid", *argv);
1288                         if (sel->sport)
1289                                 sel->sport_mask = ~((__u16)0);
1290
1291                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
1292
1293                 } else if (strcmp(*argv, "dport") == 0) {
1294                         dportp = *argv;
1295
1296                         NEXT_ARG();
1297
1298                         if (get_be16(&sel->dport, *argv, 0))
1299                                 invarg("value after \"dport\" is invalid", *argv);
1300                         if (sel->dport)
1301                                 sel->dport_mask = ~((__u16)0);
1302
1303                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1304
1305                 } else if (strcmp(*argv, "type") == 0) {
1306                         typep = *argv;
1307
1308                         NEXT_ARG();
1309
1310                         if (get_u16(&sel->sport, *argv, 0) ||
1311                             (sel->sport & ~((__u16)0xff)))
1312                                 invarg("value after \"type\" is invalid", *argv);
1313                         sel->sport = htons(sel->sport);
1314                         sel->sport_mask = ~((__u16)0);
1315
1316                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
1317
1318
1319                 } else if (strcmp(*argv, "code") == 0) {
1320                         codep = *argv;
1321
1322                         NEXT_ARG();
1323
1324                         if (get_u16(&sel->dport, *argv, 0) ||
1325                             (sel->dport & ~((__u16)0xff)))
1326                                 invarg("value after \"code\" is invalid", *argv);
1327                         sel->dport = htons(sel->dport);
1328                         sel->dport_mask = ~((__u16)0);
1329
1330                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1331
1332                 } else if (strcmp(*argv, "key") == 0) {
1333                         unsigned int uval;
1334
1335                         grekey = *argv;
1336
1337                         NEXT_ARG();
1338
1339                         if (strchr(*argv, '.'))
1340                                 uval = htonl(get_addr32(*argv));
1341                         else {
1342                                 if (get_unsigned(&uval, *argv, 0) < 0) {
1343                                         fprintf(stderr, "value after \"key\" is invalid\n");
1344                                         exit(-1);
1345                                 }
1346                         }
1347
1348                         sel->sport = htons(uval >> 16);
1349                         sel->dport = htons(uval & 0xffff);
1350                         sel->sport_mask = ~((__u16)0);
1351                         sel->dport_mask = ~((__u16)0);
1352
1353                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
1354
1355                 } else {
1356                         PREV_ARG(); /* back track */
1357                         break;
1358                 }
1359
1360                 if (!NEXT_ARG_OK())
1361                         break;
1362                 NEXT_ARG();
1363         }
1364         if (argc == *argcp)
1365                 missarg("UPSPEC");
1366         if (sportp || dportp) {
1367                 switch (sel->proto) {
1368                 case IPPROTO_TCP:
1369                 case IPPROTO_UDP:
1370                 case IPPROTO_SCTP:
1371                 case IPPROTO_DCCP:
1372                 case IPPROTO_IP: /* to allow shared SA for different protocols */
1373                         break;
1374                 default:
1375                         fprintf(stderr, "\"sport\" and \"dport\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1376                         exit(1);
1377                 }
1378         }
1379         if (typep || codep) {
1380                 switch (sel->proto) {
1381                 case IPPROTO_ICMP:
1382                 case IPPROTO_ICMPV6:
1383                 case IPPROTO_MH:
1384                         break;
1385                 default:
1386                         fprintf(stderr, "\"type\" and \"code\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1387                         exit(1);
1388                 }
1389         }
1390         if (grekey) {
1391                 switch (sel->proto) {
1392                 case IPPROTO_GRE:
1393                         break;
1394                 default:
1395                         fprintf(stderr, "\"key\" is invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
1396                         exit(1);
1397                 }
1398         }
1399
1400         *argcp = argc;
1401         *argvp = argv;
1402
1403         return 0;
1404 }
1405
1406 int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp)
1407 {
1408         int argc = *argcp;
1409         char **argv = *argvp;
1410         inet_prefix dst = {};
1411         inet_prefix src = {};
1412         char *upspecp = NULL;
1413
1414         while (1) {
1415                 if (strcmp(*argv, "src") == 0) {
1416                         NEXT_ARG();
1417
1418                         get_prefix(&src, *argv, preferred_family);
1419                         if (src.family == AF_UNSPEC)
1420                                 invarg("value after \"src\" has an unrecognized address family", *argv);
1421                         sel->family = src.family;
1422
1423                         memcpy(&sel->saddr, &src.data, sizeof(sel->saddr));
1424                         sel->prefixlen_s = src.bitlen;
1425
1426                         filter.sel_src_mask = src.bitlen;
1427
1428                 } else if (strcmp(*argv, "dst") == 0) {
1429                         NEXT_ARG();
1430
1431                         get_prefix(&dst, *argv, preferred_family);
1432                         if (dst.family == AF_UNSPEC)
1433                                 invarg("value after \"dst\" has an unrecognized address family", *argv);
1434                         sel->family = dst.family;
1435
1436                         memcpy(&sel->daddr, &dst.data, sizeof(sel->daddr));
1437                         sel->prefixlen_d = dst.bitlen;
1438
1439                         filter.sel_dst_mask = dst.bitlen;
1440
1441                 } else if (strcmp(*argv, "dev") == 0) {
1442                         int ifindex;
1443
1444                         NEXT_ARG();
1445
1446                         if (strcmp(*argv, "none") == 0)
1447                                 ifindex = 0;
1448                         else {
1449                                 ifindex = ll_name_to_index(*argv);
1450                                 if (ifindex <= 0)
1451                                         invarg("DEV value is invalid", *argv);
1452                         }
1453                         sel->ifindex = ifindex;
1454
1455                         filter.sel_dev_mask = XFRM_FILTER_MASK_FULL;
1456
1457                 } else {
1458                         if (upspecp) {
1459                                 PREV_ARG(); /* back track */
1460                                 break;
1461                         } else {
1462                                 upspecp = *argv;
1463                                 xfrm_selector_upspec_parse(sel, &argc, &argv);
1464                         }
1465                 }
1466
1467                 if (!NEXT_ARG_OK())
1468                         break;
1469
1470                 NEXT_ARG();
1471         }
1472
1473         if (src.family && dst.family && (src.family != dst.family))
1474                 invarg("the same address family is required between values after \"src\" and \"dst\"", *argv);
1475
1476         if (argc == *argcp)
1477                 missarg("SELECTOR");
1478
1479         *argcp = argc;
1480         *argvp = argv;
1481
1482         return 0;
1483 }
1484
1485 int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
1486                             int *argcp, char ***argvp)
1487 {
1488         int argc = *argcp;
1489         char **argv = *argvp;
1490         int ret;
1491
1492         if (strcmp(*argv, "time-soft") == 0) {
1493                 NEXT_ARG();
1494                 ret = get_u64(&lft->soft_add_expires_seconds, *argv, 0);
1495                 if (ret)
1496                         invarg("value after \"time-soft\" is invalid", *argv);
1497         } else if (strcmp(*argv, "time-hard") == 0) {
1498                 NEXT_ARG();
1499                 ret = get_u64(&lft->hard_add_expires_seconds, *argv, 0);
1500                 if (ret)
1501                         invarg("value after \"time-hard\" is invalid", *argv);
1502         } else if (strcmp(*argv, "time-use-soft") == 0) {
1503                 NEXT_ARG();
1504                 ret = get_u64(&lft->soft_use_expires_seconds, *argv, 0);
1505                 if (ret)
1506                         invarg("value after \"time-use-soft\" is invalid", *argv);
1507         } else if (strcmp(*argv, "time-use-hard") == 0) {
1508                 NEXT_ARG();
1509                 ret = get_u64(&lft->hard_use_expires_seconds, *argv, 0);
1510                 if (ret)
1511                         invarg("value after \"time-use-hard\" is invalid", *argv);
1512         } else if (strcmp(*argv, "byte-soft") == 0) {
1513                 NEXT_ARG();
1514                 ret = get_u64(&lft->soft_byte_limit, *argv, 0);
1515                 if (ret)
1516                         invarg("value after \"byte-soft\" is invalid", *argv);
1517         } else if (strcmp(*argv, "byte-hard") == 0) {
1518                 NEXT_ARG();
1519                 ret = get_u64(&lft->hard_byte_limit, *argv, 0);
1520                 if (ret)
1521                         invarg("value after \"byte-hard\" is invalid", *argv);
1522         } else if (strcmp(*argv, "packet-soft") == 0) {
1523                 NEXT_ARG();
1524                 ret = get_u64(&lft->soft_packet_limit, *argv, 0);
1525                 if (ret)
1526                         invarg("value after \"packet-soft\" is invalid", *argv);
1527         } else if (strcmp(*argv, "packet-hard") == 0) {
1528                 NEXT_ARG();
1529                 ret = get_u64(&lft->hard_packet_limit, *argv, 0);
1530                 if (ret)
1531                         invarg("value after \"packet-hard\" is invalid", *argv);
1532         } else
1533                 invarg("LIMIT value is invalid", *argv);
1534
1535         *argcp = argc;
1536         *argvp = argv;
1537
1538         return 0;
1539 }
1540
1541 int do_xfrm(int argc, char **argv)
1542 {
1543         memset(&filter, 0, sizeof(filter));
1544
1545         if (argc < 1)
1546                 usage();
1547
1548         if (matches(*argv, "state") == 0 ||
1549             matches(*argv, "sa") == 0)
1550                 return do_xfrm_state(argc-1, argv+1);
1551         else if (matches(*argv, "policy") == 0)
1552                 return do_xfrm_policy(argc-1, argv+1);
1553         else if (matches(*argv, "monitor") == 0)
1554                 return do_xfrm_monitor(argc-1, argv+1);
1555         else if (matches(*argv, "help") == 0) {
1556                 usage();
1557                 fprintf(stderr, "xfrm Object \"%s\" is unknown.\n", *argv);
1558                 exit(-1);
1559         }
1560         usage();
1561 }