release/src/router/iproute2/ip/ipxfrm.c

   1 /* $USAGI: $ */
   2
   3 /*
   4  * Copyright (C)2004 USAGI/WIDE Project
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 /*
  21  * based on ip.c, iproute.c
  22  */
  23 /*
  24  * Authors:
  25  *      Masahide NAKAMURA @USAGI
  26  */
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <sys/types.h>
  32 #include <sys/socket.h>
  33 #include <time.h>
  34 #include <netdb.h>
  35 #include <net/if.h>
  36 #include <linux/netlink.h>
  37 #include <linux/rtnetlink.h>
  38 #include <linux/xfrm.h>
  39
  40 #include "utils.h"
  41 #include "xfrm.h"
  42
  43 #define STRBUF_SIZE     (128)
  44 #define STRBUF_CAT(buf, str) \
  45         do { \
  46                 int rest = sizeof(buf) - 1 - strlen(buf); \
  47                 if (rest > 0) { \
  48                         int len = strlen(str); \
  49                         if (len > rest) \
  50                                 len = rest; \
  51                         strncat(buf, str, len); \
  52                         buf[sizeof(buf) - 1] = '\0'; \
  53                 } \
  54         } while(0);
  55
  56 struct xfrm_filter filter;
  57
  58 static void usage(void) __attribute__((noreturn));
  59
  60 static void usage(void)
  61 {
  62         fprintf(stderr,
  63                 "Usage: ip xfrm XFRM_OBJECT { COMMAND | help }\n"
  64                 "where  XFRM_OBJECT := { state | policy | monitor }\n");
  65         exit(-1);
  66 }
  67
  68 /* This is based on utils.c(inet_addr_match) */
  69 int xfrm_addr_match(xfrm_address_t *x1, xfrm_address_t *x2, int bits)
  70 {
  71         __u32 *a1 = (__u32 *)x1;
  72         __u32 *a2 = (__u32 *)x2;
  73         int words = bits >> 0x05;
  74
  75         bits &= 0x1f;
  76
  77         if (words)
  78                 if (memcmp(a1, a2, words << 2))
  79                         return -1;
  80
  81         if (bits) {
  82                 __u32 w1, w2;
  83                 __u32 mask;
  84
  85                 w1 = a1[words];
  86                 w2 = a2[words];
  87
  88                 mask = htonl((0xffffffff) << (0x20 - bits));
  89
  90                 if ((w1 ^ w2) & mask)
  91                         return 1;
  92         }
  93
  94         return 0;
  95 }
  96
  97 struct typeent {
  98         const char *t_name;
  99         int t_type;
 100 };
 101
 102 static const struct typeent xfrmproto_types[]= {
 103         { "esp", IPPROTO_ESP }, { "ah", IPPROTO_AH }, { "comp", IPPROTO_COMP },
 104         { NULL, -1 }
 105 };
 106
 107 int xfrm_xfrmproto_getbyname(char *name)
 108 {
 109         int i;
 110
 111         for (i = 0; ; i++) {
 112                 const struct typeent *t = &xfrmproto_types[i];
 113                 if (!t->t_name || t->t_type == -1)
 114                         break;
 115
 116                 if (strcmp(t->t_name, name) == 0)
 117                         return t->t_type;
 118         }
 119
 120         return -1;
 121 }
 122
 123 const char *strxf_xfrmproto(__u8 proto)
 124 {
 125         int i;
 126
 127         for (i = 0; ; i++) {
 128                 const struct typeent *t = &xfrmproto_types[i];
 129                 if (!t->t_name || t->t_type == -1)
 130                         break;
 131
 132                 if (t->t_type == proto)
 133                         return t->t_name;
 134         }
 135
 136         return NULL;
 137 }
 138
 139 static const struct typeent algo_types[]= {
 140         { "enc", XFRMA_ALG_CRYPT }, { "auth", XFRMA_ALG_AUTH },
 141         { "comp", XFRMA_ALG_COMP }, { NULL, -1 }
 142 };
 143
 144 int xfrm_algotype_getbyname(char *name)
 145 {
 146         int i;
 147
 148         for (i = 0; ; i++) {
 149                 const struct typeent *t = &algo_types[i];
 150                 if (!t->t_name || t->t_type == -1)
 151                         break;
 152
 153                 if (strcmp(t->t_name, name) == 0)
 154                         return t->t_type;
 155         }
 156
 157         return -1;
 158 }
 159
 160 const char *strxf_algotype(int type)
 161 {
 162         int i;
 163
 164         for (i = 0; ; i++) {
 165                 const struct typeent *t = &algo_types[i];
 166                 if (!t->t_name || t->t_type == -1)
 167                         break;
 168
 169                 if (t->t_type == type)
 170                         return t->t_name;
 171         }
 172
 173         return NULL;
 174 }
 175
 176 const char *strxf_mask8(__u8 mask)
 177 {
 178         static char str[16];
 179         const int sn = sizeof(mask) * 8 - 1;
 180         __u8 b;
 181         int i = 0;
 182
 183         for (b = (1 << sn); b > 0; b >>= 1)
 184                 str[i++] = ((b & mask) ? '1' : '0');
 185         str[i] = '\0';
 186
 187         return str;
 188 }
 189
 190 const char *strxf_mask32(__u32 mask)
 191 {
 192         static char str[16];
 193
 194         sprintf(str, "%.8x", mask);
 195
 196         return str;
 197 }
 198
 199 const char *strxf_share(__u8 share)
 200 {
 201         static char str[32];
 202
 203         switch (share) {
 204         case XFRM_SHARE_ANY:
 205                 strcpy(str, "any");
 206                 break;
 207         case XFRM_SHARE_SESSION:
 208                 strcpy(str, "session");
 209                 break;
 210         case XFRM_SHARE_USER:
 211                 strcpy(str, "user");
 212                 break;
 213         case XFRM_SHARE_UNIQUE:
 214                 strcpy(str, "unique");
 215                 break;
 216         default:
 217                 sprintf(str, "%u", share);
 218                 break;
 219         }
 220
 221         return str;
 222 }
 223
 224 const char *strxf_proto(__u8 proto)
 225 {
 226         static char buf[32];
 227         struct protoent *pp;
 228         const char *p;
 229
 230         pp = getprotobynumber(proto);
 231         if (pp)
 232                 p = pp->p_name;
 233         else {
 234                 sprintf(buf, "%u", proto);
 235                 p = buf;
 236         }
 237
 238         return p;
 239 }
 240
 241 void xfrm_id_info_print(xfrm_address_t *saddr, struct xfrm_id *id,
 242                         __u8 mode, __u32 reqid, __u16 family, int force_spi,
 243                         FILE *fp, const char *prefix, const char *title)
 244 {
 245         char abuf[256];
 246
 247         if (title)
 248                 fprintf(fp, title);
 249
 250         memset(abuf, '\0', sizeof(abuf));
 251         fprintf(fp, "src %s ", rt_addr_n2a(family, sizeof(*saddr),
 252                                            saddr, abuf, sizeof(abuf)));
 253         memset(abuf, '\0', sizeof(abuf));
 254         fprintf(fp, "dst %s", rt_addr_n2a(family, sizeof(id->daddr),
 255                                           &id->daddr, abuf, sizeof(abuf)));
 256         fprintf(fp, "%s", _SL_);
 257
 258         if (prefix)
 259                 fprintf(fp, prefix);
 260         fprintf(fp, "\t");
 261
 262         fprintf(fp, "proto %s ", strxf_xfrmproto(id->proto));
 263
 264         if (show_stats > 0 || force_spi || id->spi) {
 265                 __u32 spi = ntohl(id->spi);
 266                 fprintf(fp, "spi 0x%08x", spi);
 267                 if (show_stats > 0)
 268                         fprintf(fp, "(%u)", spi);
 269                 fprintf(fp, " ");
 270         }
 271
 272         fprintf(fp, "reqid %u", reqid);
 273         if (show_stats > 0)
 274                 fprintf(fp, "(0x%08x)", reqid);
 275         fprintf(fp, " ");
 276
 277         fprintf(fp, "mode ");
 278         switch (mode) {
 279         case 0:
 280                 fprintf(fp, "transport");
 281                 break;
 282         case 1:
 283                 fprintf(fp, "tunnel");
 284                 break;
 285         default:
 286                 fprintf(fp, "%u", mode);
 287                 break;
 288         }
 289         fprintf(fp, "%s", _SL_);
 290 }
 291
 292 static const char *strxf_limit(__u64 limit)
 293 {
 294         static char str[32];
 295         if (limit == XFRM_INF)
 296                 strcpy(str, "(INF)");
 297         else
 298                 sprintf(str, "%llu", (unsigned long long) limit);
 299
 300         return str;
 301 }
 302
 303 void xfrm_stats_print(struct xfrm_stats *s, FILE *fp, const char *prefix)
 304 {
 305         if (prefix)
 306                 fprintf(fp, prefix);
 307         fprintf(fp, "stats:");
 308         fprintf(fp, "%s", _SL_);
 309
 310         if (prefix)
 311                 fprintf(fp, prefix);
 312         fprintf(fp, "  ");
 313         fprintf(fp, "replay-window %u ", s->replay_window);
 314         fprintf(fp, "replay %u ", s->replay);
 315         fprintf(fp, "failed %u", s->integrity_failed);
 316         fprintf(fp, "%s", _SL_);
 317 }
 318
 319 static const char *strxf_time(__u64 time)
 320 {
 321         static char str[32];
 322
 323         if (time == 0)
 324                 strcpy(str, "-");
 325         else {
 326                 time_t t;
 327                 struct tm *tp;
 328
 329                 /* XXX: treat time in the same manner of kernel's
 330                  * net/xfrm/xfrm_{user,state}.c
 331                  */
 332                 t = (long)time;
 333                 tp = localtime(&t);
 334
 335                 strftime(str, sizeof(str), "%Y-%m-%d %T", tp);
 336         }
 337
 338         return str;
 339 }
 340
 341 void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg,
 342                          struct xfrm_lifetime_cur *cur,
 343                          FILE *fp, const char *prefix)
 344 {
 345         if (cfg) {
 346                 if (prefix)
 347                         fprintf(fp, prefix);
 348                 fprintf(fp, "lifetime config:");
 349                 fprintf(fp, "%s", _SL_);
 350
 351                 if (prefix)
 352                         fprintf(fp, prefix);
 353                 fprintf(fp, "  ");
 354                 fprintf(fp, "limit: ");
 355                 fprintf(fp, "soft ");
 356                 fprintf(fp, strxf_limit(cfg->soft_byte_limit));
 357                 fprintf(fp, "(bytes), hard ");
 358                 fprintf(fp, strxf_limit(cfg->hard_byte_limit));
 359                 fprintf(fp, "(bytes)");
 360                 fprintf(fp, "%s", _SL_);
 361
 362                 if (prefix)
 363                         fprintf(fp, prefix);
 364                 fprintf(fp, "  ");
 365                 fprintf(fp, "limit: ");
 366                 fprintf(fp, "soft ");
 367                 fprintf(fp, strxf_limit(cfg->soft_packet_limit));
 368                 fprintf(fp, "(packets), hard ");
 369                 fprintf(fp, strxf_limit(cfg->hard_packet_limit));
 370                 fprintf(fp, "(packets)");
 371                 fprintf(fp, "%s", _SL_);
 372
 373                 if (prefix)
 374                         fprintf(fp, prefix);
 375                 fprintf(fp, "  ");
 376                 fprintf(fp, "expire add: ");
 377                 fprintf(fp, "soft ");
 378                 fprintf(fp, "%llu", (unsigned long long) cfg->soft_add_expires_seconds);
 379                 fprintf(fp, "(sec), hard ");
 380                 fprintf(fp, "%llu", (unsigned long long) cfg->hard_add_expires_seconds);
 381                 fprintf(fp, "(sec)");
 382                 fprintf(fp, "%s", _SL_);
 383
 384                 if (prefix)
 385                         fprintf(fp, prefix);
 386                 fprintf(fp, "  ");
 387                 fprintf(fp, "expire use: ");
 388                 fprintf(fp, "soft ");
 389                 fprintf(fp, "%llu", (unsigned long long) cfg->soft_use_expires_seconds);
 390                 fprintf(fp, "(sec), hard ");
 391                 fprintf(fp, "%llu", (unsigned long long) cfg->hard_use_expires_seconds);
 392                 fprintf(fp, "(sec)");
 393                 fprintf(fp, "%s", _SL_);
 394         }
 395         if (cur) {
 396                 if (prefix)
 397                         fprintf(fp, prefix);
 398                 fprintf(fp, "lifetime current:");
 399                 fprintf(fp, "%s", _SL_);
 400
 401                 if (prefix)
 402                         fprintf(fp, prefix);
 403                 fprintf(fp, "  ");
 404                 fprintf(fp, "%llu(bytes), ", (unsigned long long) cur->bytes);
 405                 fprintf(fp, "%llu(packets)", (unsigned long long) cur->packets);
 406                 fprintf(fp, "%s", _SL_);
 407
 408                 if (prefix)
 409                         fprintf(fp, prefix);
 410                 fprintf(fp, "  ");
 411                 fprintf(fp, "add %s ", strxf_time(cur->add_time));
 412                 fprintf(fp, "use %s", strxf_time(cur->use_time));
 413                 fprintf(fp, "%s", _SL_);
 414         }
 415 }
 416
 417 void xfrm_selector_print(struct xfrm_selector *sel, __u16 family,
 418                          FILE *fp, const char *prefix)
 419 {
 420         char abuf[256];
 421         __u16 f;
 422
 423         f = sel->family;
 424         if (f == AF_UNSPEC)
 425                 f = family;
 426         if (f == AF_UNSPEC)
 427                 f = preferred_family;
 428
 429         if (prefix)
 430                 fprintf(fp, prefix);
 431
 432         memset(abuf, '\0', sizeof(abuf));
 433         fprintf(fp, "src %s/%u ", rt_addr_n2a(f, sizeof(sel->saddr),
 434                                               &sel->saddr, abuf, sizeof(abuf)),
 435                 sel->prefixlen_s);
 436
 437         memset(abuf, '\0', sizeof(abuf));
 438         fprintf(fp, "dst %s/%u ", rt_addr_n2a(f, sizeof(sel->daddr),
 439                                               &sel->daddr, abuf, sizeof(abuf)),
 440                 sel->prefixlen_d);
 441
 442         if (sel->proto)
 443                 fprintf(fp, "proto %s ", strxf_proto(sel->proto));
 444         switch (sel->proto) {
 445         case IPPROTO_TCP:
 446         case IPPROTO_UDP:
 447         case IPPROTO_SCTP:
 448         case IPPROTO_DCCP:
 449         default: /* XXX */
 450                 if (sel->sport_mask)
 451                         fprintf(fp, "sport %u ", ntohs(sel->sport));
 452                 if (sel->dport_mask)
 453                         fprintf(fp, "dport %u ", ntohs(sel->dport));
 454                 break;
 455         case IPPROTO_ICMP:
 456         case IPPROTO_ICMPV6:
 457                 /* type/code is stored at sport/dport in selector */
 458                 if (sel->sport_mask)
 459                         fprintf(fp, "type %u ", ntohs(sel->sport));
 460                 if (sel->dport_mask)
 461                         fprintf(fp, "code %u ", ntohs(sel->dport));
 462                 break;
 463         }
 464
 465         if (sel->ifindex > 0) {
 466                 char buf[IFNAMSIZ];
 467
 468                 memset(buf, '\0', sizeof(buf));
 469                 if_indextoname(sel->ifindex, buf);
 470                 fprintf(fp, "dev %s ", buf);
 471         }
 472
 473         if (show_stats > 0)
 474                 fprintf(fp, "uid %u", sel->user);
 475
 476         fprintf(fp, "%s", _SL_);
 477 }
 478
 479 static void xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
 480                             FILE *fp, const char *prefix)
 481 {
 482         int keylen;
 483         int i;
 484
 485         if (prefix)
 486                 fprintf(fp, prefix);
 487
 488         fprintf(fp, "%s ", strxf_algotype(type));
 489
 490         if (len < sizeof(*algo)) {
 491                 fprintf(fp, "(ERROR truncated)");
 492                 goto fin;
 493         }
 494         len -= sizeof(*algo);
 495
 496         fprintf(fp, "%s ", algo->alg_name);
 497
 498         keylen = algo->alg_key_len / 8;
 499         if (len < keylen) {
 500                 fprintf(fp, "(ERROR truncated)");
 501                 goto fin;
 502         }
 503
 504         fprintf(fp, "0x");
 505         for (i = 0; i < keylen; i ++)
 506                 fprintf(fp, "%.2x", (unsigned char)algo->alg_key[i]);
 507
 508         if (show_stats > 0)
 509                 fprintf(fp, " (%d bits)", algo->alg_key_len);
 510
 511  fin:
 512         fprintf(fp, "%s", _SL_);
 513 }
 514
 515 static void xfrm_tmpl_print(struct xfrm_user_tmpl *tmpls, int len,
 516                             __u16 family, FILE *fp, const char *prefix)
 517 {
 518         int ntmpls = len / sizeof(struct xfrm_user_tmpl);
 519         int i;
 520
 521         if (ntmpls <= 0) {
 522                 if (prefix)
 523                         fprintf(fp, prefix);
 524                 fprintf(fp, "(ERROR \"tmpl\" truncated)");
 525                 fprintf(fp, "%s", _SL_);
 526                 return;
 527         }
 528
 529         for (i = 0; i < ntmpls; i++) {
 530                 struct xfrm_user_tmpl *tmpl = &tmpls[i];
 531
 532                 if (prefix)
 533                         fprintf(fp, prefix);
 534
 535                 xfrm_id_info_print(&tmpl->saddr, &tmpl->id, tmpl->mode,
 536                                    tmpl->reqid, family, 0, fp, prefix, "tmpl ");
 537
 538                 if (show_stats > 0 || tmpl->optional) {
 539                         if (prefix)
 540                                 fprintf(fp, prefix);
 541                         fprintf(fp, "\t");
 542                         switch (tmpl->optional) {
 543                         case 0:
 544                                 if (show_stats > 0)
 545                                         fprintf(fp, "level required ");
 546                                 break;
 547                         case 1:
 548                                 fprintf(fp, "level use ");
 549                                 break;
 550                         default:
 551                                 fprintf(fp, "level %u ", tmpl->optional);
 552                                 break;
 553                         }
 554
 555                         if (show_stats > 0)
 556                                 fprintf(fp, "share %s ", strxf_share(tmpl->share));
 557
 558                         fprintf(fp, "%s", _SL_);
 559                 }
 560
 561                 if (show_stats > 0) {
 562                         if (prefix)
 563                                 fprintf(fp, prefix);
 564                         fprintf(fp, "\t");
 565                         fprintf(fp, "%s-mask %s ",
 566                                 strxf_algotype(XFRMA_ALG_CRYPT),
 567                                 strxf_mask32(tmpl->ealgos));
 568                         fprintf(fp, "%s-mask %s ",
 569                                 strxf_algotype(XFRMA_ALG_AUTH),
 570                                 strxf_mask32(tmpl->aalgos));
 571                         fprintf(fp, "%s-mask %s",
 572                                 strxf_algotype(XFRMA_ALG_COMP),
 573                                 strxf_mask32(tmpl->calgos));
 574
 575                         fprintf(fp, "%s", _SL_);
 576                 }
 577         }
 578 }
 579
 580 void xfrm_xfrma_print(struct rtattr *tb[], __u16 family,
 581                       FILE *fp, const char *prefix)
 582 {
 583         if (tb[XFRMA_ALG_AUTH]) {
 584                 struct rtattr *rta = tb[XFRMA_ALG_AUTH];
 585                 xfrm_algo_print((struct xfrm_algo *) RTA_DATA(rta),
 586                                 XFRMA_ALG_AUTH, RTA_PAYLOAD(rta), fp, prefix);
 587         }
 588
 589         if (tb[XFRMA_ALG_CRYPT]) {
 590                 struct rtattr *rta = tb[XFRMA_ALG_CRYPT];
 591                 xfrm_algo_print((struct xfrm_algo *) RTA_DATA(rta),
 592                                 XFRMA_ALG_CRYPT, RTA_PAYLOAD(rta), fp, prefix);
 593         }
 594
 595         if (tb[XFRMA_ALG_COMP]) {
 596                 struct rtattr *rta = tb[XFRMA_ALG_COMP];
 597                 xfrm_algo_print((struct xfrm_algo *) RTA_DATA(rta),
 598                                 XFRMA_ALG_COMP, RTA_PAYLOAD(rta), fp, prefix);
 599         }
 600
 601         if (tb[XFRMA_ENCAP]) {
 602                 struct xfrm_encap_tmpl *e;
 603                 char abuf[256];
 604
 605                 if (prefix)
 606                         fprintf(fp, prefix);
 607                 fprintf(fp, "encap ");
 608
 609                 if (RTA_PAYLOAD(tb[XFRMA_ENCAP]) < sizeof(*e)) {
 610                         fprintf(fp, "(ERROR truncated)");
 611                         fprintf(fp, "%s", _SL_);
 612                         return;
 613                 }
 614                 e = (struct xfrm_encap_tmpl *) RTA_DATA(tb[XFRMA_ENCAP]);
 615
 616                 fprintf(fp, "type ");
 617                 switch (e->encap_type) {
 618                 case 1:
 619                         fprintf(fp, "espinudp-nonike ");
 620                         break;
 621                 case 2:
 622                         fprintf(fp, "espinudp ");
 623                         break;
 624                 default:
 625                         fprintf(fp, "%u ", e->encap_type);
 626                         break;
 627                 }
 628                 fprintf(fp, "sport %u ", ntohs(e->encap_sport));
 629                 fprintf(fp, "dport %u ", ntohs(e->encap_dport));
 630
 631                 memset(abuf, '\0', sizeof(abuf));
 632                 fprintf(fp, "addr %s",
 633                         rt_addr_n2a(family, sizeof(e->encap_oa),
 634                                     &e->encap_oa, abuf, sizeof(abuf)));
 635                 fprintf(fp, "%s", _SL_);
 636         }
 637
 638         if (tb[XFRMA_TMPL]) {
 639                 struct rtattr *rta = tb[XFRMA_TMPL];
 640                 xfrm_tmpl_print((struct xfrm_user_tmpl *) RTA_DATA(rta),
 641                                 RTA_PAYLOAD(rta), family, fp, prefix);
 642         }
 643 }
 644
 645 static int xfrm_selector_iszero(struct xfrm_selector *s)
 646 {
 647         struct xfrm_selector s0;
 648
 649         memset(&s0, 0, sizeof(s0));
 650
 651         return (memcmp(&s0, s, sizeof(s0)) == 0);
 652 }
 653
 654 void xfrm_state_info_print(struct xfrm_usersa_info *xsinfo,
 655                             struct rtattr *tb[], FILE *fp, const char *prefix,
 656                             const char *title)
 657 {
 658         char buf[STRBUF_SIZE];
 659
 660         memset(buf, '\0', sizeof(buf));
 661
 662         xfrm_id_info_print(&xsinfo->saddr, &xsinfo->id, xsinfo->mode,
 663                            xsinfo->reqid, xsinfo->family, 1, fp, prefix,
 664                            title);
 665
 666         if (prefix)
 667                 STRBUF_CAT(buf, prefix);
 668         STRBUF_CAT(buf, "\t");
 669
 670         fprintf(fp, buf);
 671         fprintf(fp, "replay-window %u ", xsinfo->replay_window);
 672         if (show_stats > 0)
 673                 fprintf(fp, "seq 0x%08u ", xsinfo->seq);
 674         if (show_stats > 0 || xsinfo->flags) {
 675                 __u8 flags = xsinfo->flags;
 676
 677                 fprintf(fp, "flag ");
 678                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOECN, "noecn");
 679                 XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_DECAP_DSCP, "decap-dscp");
 680                 if (flags)
 681                         fprintf(fp, "%x", flags);
 682                 if (show_stats > 0)
 683                         fprintf(fp, " (0x%s)", strxf_mask8(flags));
 684         }
 685         fprintf(fp, "%s", _SL_);
 686
 687         xfrm_xfrma_print(tb, xsinfo->family, fp, buf);
 688
 689         if (!xfrm_selector_iszero(&xsinfo->sel)) {
 690                 char sbuf[STRBUF_SIZE];
 691
 692                 memcpy(sbuf, buf, sizeof(sbuf));
 693                 STRBUF_CAT(sbuf, "sel ");
 694
 695                 xfrm_selector_print(&xsinfo->sel, xsinfo->family, fp, sbuf);
 696         }
 697
 698         if (show_stats > 0) {
 699                 xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, buf);
 700                 xfrm_stats_print(&xsinfo->stats, fp, buf);
 701         }
 702 }
 703
 704 void xfrm_policy_info_print(struct xfrm_userpolicy_info *xpinfo,
 705                             struct rtattr *tb[], FILE *fp, const char *prefix,
 706                             const char *title)
 707 {
 708         char buf[STRBUF_SIZE];
 709
 710         memset(buf, '\0', sizeof(buf));
 711
 712         xfrm_selector_print(&xpinfo->sel, preferred_family, fp, title);
 713
 714         if (prefix)
 715                 STRBUF_CAT(buf, prefix);
 716         STRBUF_CAT(buf, "\t");
 717
 718         fprintf(fp, buf);
 719         fprintf(fp, "dir ");
 720         switch (xpinfo->dir) {
 721         case XFRM_POLICY_IN:
 722                 fprintf(fp, "in");
 723                 break;
 724         case XFRM_POLICY_OUT:
 725                 fprintf(fp, "out");
 726                 break;
 727         case XFRM_POLICY_FWD:
 728                 fprintf(fp, "fwd");
 729                 break;
 730         default:
 731                 fprintf(fp, "%u", xpinfo->dir);
 732                 break;
 733         }
 734         fprintf(fp, " ");
 735
 736         switch (xpinfo->action) {
 737         case XFRM_POLICY_ALLOW:
 738                 if (show_stats > 0)
 739                         fprintf(fp, "action allow ");
 740                 break;
 741         case XFRM_POLICY_BLOCK:
 742                 fprintf(fp, "action block ");
 743                 break;
 744         default:
 745                 fprintf(fp, "action %u ", xpinfo->action);
 746                 break;
 747         }
 748
 749         if (show_stats)
 750                 fprintf(fp, "index %u ", xpinfo->index);
 751         fprintf(fp, "priority %u ", xpinfo->priority);
 752         if (show_stats > 0) {
 753                 fprintf(fp, "share %s ", strxf_share(xpinfo->share));
 754                 fprintf(fp, "flag 0x%s", strxf_mask8(xpinfo->flags));
 755         }
 756         fprintf(fp, "%s", _SL_);
 757
 758         if (show_stats > 0)
 759                 xfrm_lifetime_print(&xpinfo->lft, &xpinfo->curlft, fp, buf);
 760
 761         xfrm_xfrma_print(tb, xpinfo->sel.family, fp, buf);
 762 }
 763
 764 int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
 765                   int loose, int *argcp, char ***argvp)
 766 {
 767         int argc = *argcp;
 768         char **argv = *argvp;
 769         inet_prefix dst;
 770         inet_prefix src;
 771
 772         memset(&dst, 0, sizeof(dst));
 773         memset(&src, 0, sizeof(src));
 774
 775         while (1) {
 776                 if (strcmp(*argv, "src") == 0) {
 777                         NEXT_ARG();
 778
 779                         get_prefix(&src, *argv, preferred_family);
 780                         if (src.family == AF_UNSPEC)
 781                                 invarg("\"src\" address family is AF_UNSPEC", *argv);
 782                         if (family)
 783                                 *family = src.family;
 784
 785                         memcpy(saddr, &src.data, sizeof(*saddr));
 786
 787                         filter.id_src_mask = src.bitlen;
 788
 789                 } else if (strcmp(*argv, "dst") == 0) {
 790                         NEXT_ARG();
 791
 792                         get_prefix(&dst, *argv, preferred_family);
 793                         if (dst.family == AF_UNSPEC)
 794                                 invarg("\"dst\" address family is AF_UNSPEC", *argv);
 795                         if (family)
 796                                 *family = dst.family;
 797
 798                         memcpy(&id->daddr, &dst.data, sizeof(id->daddr));
 799
 800                         filter.id_dst_mask = dst.bitlen;
 801
 802                 } else if (strcmp(*argv, "proto") == 0) {
 803                         int ret;
 804
 805                         NEXT_ARG();
 806
 807                         ret = xfrm_xfrmproto_getbyname(*argv);
 808                         if (ret < 0)
 809                                 invarg("\"XFRM_PROTO\" is invalid", *argv);
 810
 811                         id->proto = (__u8)ret;
 812
 813                         filter.id_proto_mask = XFRM_FILTER_MASK_FULL;
 814
 815                 } else if (strcmp(*argv, "spi") == 0) {
 816                         __u32 spi;
 817
 818                         NEXT_ARG();
 819                         if (get_u32(&spi, *argv, 0))
 820                                 invarg("\"SPI\" is invalid", *argv);
 821
 822                         spi = htonl(spi);
 823                         id->spi = spi;
 824
 825                         filter.id_spi_mask = XFRM_FILTER_MASK_FULL;
 826
 827                 } else {
 828                         PREV_ARG(); /* back track */
 829                         break;
 830                 }
 831
 832                 if (!NEXT_ARG_OK())
 833                         break;
 834                 NEXT_ARG();
 835         }
 836
 837         if (src.family && dst.family && (src.family != dst.family))
 838                 invarg("the same address family is required between \"src\" and \"dst\"", *argv);
 839
 840         if (loose == 0 && id->proto == 0)
 841                 missarg("XFRM_PROTO");
 842         if (argc == *argcp)
 843                 missarg("ID");
 844
 845         *argcp = argc;
 846         *argvp = argv;
 847
 848         return 0;
 849 }
 850
 851 int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp)
 852 {
 853         int argc = *argcp;
 854         char **argv = *argvp;
 855
 856         if (matches(*argv, "transport") == 0)
 857                 *mode = 0;
 858         else if (matches(*argv, "tunnel") == 0)
 859                 *mode = 1;
 860         else
 861                 invarg("\"MODE\" is invalid", *argv);
 862
 863         *argcp = argc;
 864         *argvp = argv;
 865
 866         return 0;
 867 }
 868
 869 int xfrm_encap_type_parse(__u16 *type, int *argcp, char ***argvp)
 870 {
 871         int argc = *argcp;
 872         char **argv = *argvp;
 873
 874         if (strcmp(*argv, "espinudp-nonike") == 0)
 875                 *type = 1;
 876         else if (strcmp(*argv, "espinudp") == 0)
 877                 *type = 2;
 878         else
 879                 invarg("\"ENCAP-TYPE\" is invalid", *argv);
 880
 881         *argcp = argc;
 882         *argvp = argv;
 883
 884         return 0;
 885 }
 886
 887 /* NOTE: reqid is used by host-byte order */
 888 int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp)
 889 {
 890         int argc = *argcp;
 891         char **argv = *argvp;
 892
 893         if (get_u32(reqid, *argv, 0))
 894                 invarg("\"REQID\" is invalid", *argv);
 895
 896         *argcp = argc;
 897         *argvp = argv;
 898
 899         return 0;
 900 }
 901
 902 static int xfrm_selector_upspec_parse(struct xfrm_selector *sel,
 903                                       int *argcp, char ***argvp)
 904 {
 905         int argc = *argcp;
 906         char **argv = *argvp;
 907         char *sportp = NULL;
 908         char *dportp = NULL;
 909         char *typep = NULL;
 910         char *codep = NULL;
 911
 912         while (1) {
 913                 if (strcmp(*argv, "proto") == 0) {
 914                         __u8 upspec;
 915
 916                         NEXT_ARG();
 917
 918                         if (strcmp(*argv, "any") == 0)
 919                                 upspec = 0;
 920                         else {
 921                                 struct protoent *pp;
 922                                 pp = getprotobyname(*argv);
 923                                 if (pp)
 924                                         upspec = pp->p_proto;
 925                                 else {
 926                                         if (get_u8(&upspec, *argv, 0))
 927                                                 invarg("\"PROTO\" is invalid", *argv);
 928                                 }
 929                         }
 930                         sel->proto = upspec;
 931
 932                         filter.upspec_proto_mask = XFRM_FILTER_MASK_FULL;
 933
 934                 } else if (strcmp(*argv, "sport") == 0) {
 935                         sportp = *argv;
 936
 937                         NEXT_ARG();
 938
 939                         if (get_u16(&sel->sport, *argv, 0))
 940                                 invarg("\"PORT\" is invalid", *argv);
 941                         sel->sport = htons(sel->sport);
 942                         if (sel->sport)
 943                                 sel->sport_mask = ~((__u16)0);
 944
 945                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
 946
 947                 } else if (strcmp(*argv, "dport") == 0) {
 948                         dportp = *argv;
 949
 950                         NEXT_ARG();
 951
 952                         if (get_u16(&sel->dport, *argv, 0))
 953                                 invarg("\"PORT\" is invalid", *argv);
 954                         sel->dport = htons(sel->dport);
 955                         if (sel->dport)
 956                                 sel->dport_mask = ~((__u16)0);
 957
 958                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
 959
 960                 } else if (strcmp(*argv, "type") == 0) {
 961                         typep = *argv;
 962
 963                         NEXT_ARG();
 964
 965                         if (get_u16(&sel->sport, *argv, 0) ||
 966                             (sel->sport & ~((__u16)0xff)))
 967                                 invarg("\"type\" value is invalid", *argv);
 968                         sel->sport = htons(sel->sport);
 969                         sel->sport_mask = ~((__u16)0);
 970
 971                         filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
 972
 973
 974                 } else if (strcmp(*argv, "code") == 0) {
 975                         codep = *argv;
 976
 977                         NEXT_ARG();
 978
 979                         if (get_u16(&sel->dport, *argv, 0) ||
 980                             (sel->dport & ~((__u16)0xff)))
 981                                 invarg("\"code\" value is invalid", *argv);
 982                         sel->dport = htons(sel->dport);
 983                         sel->dport_mask = ~((__u16)0);
 984
 985                         filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
 986
 987                 } else {
 988                         PREV_ARG(); /* back track */
 989                         break;
 990                 }
 991
 992                 if (!NEXT_ARG_OK())
 993                         break;
 994                 NEXT_ARG();
 995         }
 996         if (argc == *argcp)
 997                 missarg("UPSPEC");
 998         if (sportp || dportp) {
 999                 switch (sel->proto) {
1000                 case IPPROTO_TCP:
1001                 case IPPROTO_UDP:
1002                 case IPPROTO_SCTP:
1003                 case IPPROTO_DCCP:
1004                         break;
1005                 default:
1006                         fprintf(stderr, "\"sport\" and \"dport\" are invalid with proto=%s\n", strxf_proto(sel->proto));
1007                         exit(1);
1008                 }
1009         }
1010         if (typep || codep) {
1011                 switch (sel->proto) {
1012                 case IPPROTO_ICMP:
1013                 case IPPROTO_ICMPV6:
1014                         break;
1015                 default:
1016                         fprintf(stderr, "\"type\" and \"code\" are invalid with proto=%s\n", strxf_proto(sel->proto));
1017                         exit(1);
1018                 }
1019         }
1020
1021         *argcp = argc;
1022         *argvp = argv;
1023
1024         return 0;
1025 }
1026
1027 int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp)
1028 {
1029         int argc = *argcp;
1030         char **argv = *argvp;
1031         inet_prefix dst;
1032         inet_prefix src;
1033         char *upspecp = NULL;
1034
1035         memset(&dst, 0, sizeof(dst));
1036         memset(&src, 0, sizeof(src));
1037
1038         while (1) {
1039                 if (strcmp(*argv, "src") == 0) {
1040                         NEXT_ARG();
1041
1042                         get_prefix(&src, *argv, preferred_family);
1043                         if (src.family == AF_UNSPEC)
1044                                 invarg("\"src\" address family is AF_UNSPEC", *argv);
1045                         sel->family = src.family;
1046
1047                         memcpy(&sel->saddr, &src.data, sizeof(sel->saddr));
1048                         sel->prefixlen_s = src.bitlen;
1049
1050                         filter.sel_src_mask = src.bitlen;
1051
1052                 } else if (strcmp(*argv, "dst") == 0) {
1053                         NEXT_ARG();
1054
1055                         get_prefix(&dst, *argv, preferred_family);
1056                         if (dst.family == AF_UNSPEC)
1057                                 invarg("\"dst\" address family is AF_UNSPEC", *argv);
1058                         sel->family = dst.family;
1059
1060                         memcpy(&sel->daddr, &dst.data, sizeof(sel->daddr));
1061                         sel->prefixlen_d = dst.bitlen;
1062
1063                         filter.sel_dst_mask = dst.bitlen;
1064
1065                 } else if (strcmp(*argv, "dev") == 0) {
1066                         int ifindex;
1067
1068                         NEXT_ARG();
1069
1070                         if (strcmp(*argv, "none") == 0)
1071                                 ifindex = 0;
1072                         else {
1073                                 ifindex = if_nametoindex(*argv);
1074                                 if (ifindex <= 0)
1075                                         invarg("\"DEV\" is invalid", *argv);
1076                         }
1077                         sel->ifindex = ifindex;
1078
1079                         filter.sel_dev_mask = XFRM_FILTER_MASK_FULL;
1080
1081                 } else {
1082                         if (upspecp) {
1083                                 PREV_ARG(); /* back track */
1084                                 break;
1085                         } else {
1086                                 upspecp = *argv;
1087                                 xfrm_selector_upspec_parse(sel, &argc, &argv);
1088                         }
1089                 }
1090
1091                 if (!NEXT_ARG_OK())
1092                         break;
1093
1094                 NEXT_ARG();
1095         }
1096
1097         if (src.family && dst.family && (src.family != dst.family))
1098                 invarg("the same address family is required between \"src\" and \"dst\"", *argv);
1099
1100         if (argc == *argcp)
1101                 missarg("SELECTOR");
1102
1103         *argcp = argc;
1104         *argvp = argv;
1105
1106         return 0;
1107 }
1108
1109 int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
1110                             int *argcp, char ***argvp)
1111 {
1112         int argc = *argcp;
1113         char **argv = *argvp;
1114         int ret;
1115
1116         if (strcmp(*argv, "time-soft") == 0) {
1117                 NEXT_ARG();
1118                 ret = get_u64(&lft->soft_add_expires_seconds, *argv, 0);
1119                 if (ret)
1120                         invarg("\"time-soft\" value is invalid", *argv);
1121         } else if (strcmp(*argv, "time-hard") == 0) {
1122                 NEXT_ARG();
1123                 ret = get_u64(&lft->hard_add_expires_seconds, *argv, 0);
1124                 if (ret)
1125                         invarg("\"time-hard\" value is invalid", *argv);
1126         } else if (strcmp(*argv, "time-use-soft") == 0) {
1127                 NEXT_ARG();
1128                 ret = get_u64(&lft->soft_use_expires_seconds, *argv, 0);
1129                 if (ret)
1130                         invarg("\"time-use-soft\" value is invalid", *argv);
1131         } else if (strcmp(*argv, "time-use-hard") == 0) {
1132                 NEXT_ARG();
1133                 ret = get_u64(&lft->hard_use_expires_seconds, *argv, 0);
1134                 if (ret)
1135                         invarg("\"time-use-hard\" value is invalid", *argv);
1136         } else if (strcmp(*argv, "byte-soft") == 0) {
1137                 NEXT_ARG();
1138                 ret = get_u64(&lft->soft_byte_limit, *argv, 0);
1139                 if (ret)
1140                         invarg("\"byte-soft\" value is invalid", *argv);
1141         } else if (strcmp(*argv, "byte-hard") == 0) {
1142                 NEXT_ARG();
1143                 ret = get_u64(&lft->hard_byte_limit, *argv, 0);
1144                 if (ret)
1145                         invarg("\"byte-hard\" value is invalid", *argv);
1146         } else if (strcmp(*argv, "packet-soft") == 0) {
1147                 NEXT_ARG();
1148                 ret = get_u64(&lft->soft_packet_limit, *argv, 0);
1149                 if (ret)
1150                         invarg("\"packet-soft\" value is invalid", *argv);
1151         } else if (strcmp(*argv, "packet-hard") == 0) {
1152                 NEXT_ARG();
1153                 ret = get_u64(&lft->hard_packet_limit, *argv, 0);
1154                 if (ret)
1155                         invarg("\"packet-hard\" value is invalid", *argv);
1156         } else
1157                 invarg("\"LIMIT\" is invalid", *argv);
1158
1159         *argcp = argc;
1160         *argvp = argv;
1161
1162         return 0;
1163 }
1164
1165 int do_xfrm(int argc, char **argv)
1166 {
1167         memset(&filter, 0, sizeof(filter));
1168
1169         if (argc < 1)
1170                 usage();
1171
1172         if (matches(*argv, "state") == 0 ||
1173             matches(*argv, "sa") == 0)
1174                 return do_xfrm_state(argc-1, argv+1);
1175         else if (matches(*argv, "policy") == 0)
1176                 return do_xfrm_policy(argc-1, argv+1);
1177         else if (matches(*argv, "monitor") == 0)
1178                 return do_xfrm_monitor(argc-1, argv+1);
1179         else if (matches(*argv, "help") == 0) {
1180                 usage();
1181                 fprintf(stderr, "xfrm Object \"%s\" is unknown.\n", *argv);
1182                 exit(-1);
1183         }
1184         usage();
1185 }