lib/libipsec/pfkey_dump.c

   1 /*      $FreeBSD: src/lib/libipsec/pfkey_dump.c,v 1.1.2.4 2003/04/27 00:03:36 sumikawa Exp $    */
   2 /*      $KAME: pfkey_dump.c,v 1.28 2001/06/27 10:46:51 sakane Exp $     */
   3
   4 /*
   5  * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the project nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include <sys/types.h>
  34 #include <sys/param.h>
  35 #include <sys/socket.h>
  36 #include <netinet6/ipsec.h>
  37 #include <net/pfkeyv2.h>
  38 #include <netkey/key_var.h>
  39 #include <netkey/key_debug.h>
  40
  41 #include <netinet/in.h>
  42 #include <arpa/inet.h>
  43
  44 #include <stdlib.h>
  45 #include <unistd.h>
  46 #include <stdio.h>
  47 #include <string.h>
  48 #include <time.h>
  49 #include <netdb.h>
  50
  51 #include "ipsec_strerror.h"
  52 #include "libpfkey.h"
  53
  54 /* cope with old kame headers - ugly */
  55 #ifndef SADB_X_AALG_MD5
  56 #define SADB_X_AALG_MD5         SADB_AALG_MD5
  57 #endif
  58 #ifndef SADB_X_AALG_SHA
  59 #define SADB_X_AALG_SHA         SADB_AALG_SHA
  60 #endif
  61 #ifndef SADB_X_AALG_NULL
  62 #define SADB_X_AALG_NULL        SADB_AALG_NULL
  63 #endif
  64
  65 #ifndef SADB_X_EALG_BLOWFISHCBC
  66 #define SADB_X_EALG_BLOWFISHCBC SADB_EALG_BLOWFISHCBC
  67 #endif
  68 #ifndef SADB_X_EALG_CAST128CBC
  69 #define SADB_X_EALG_CAST128CBC  SADB_EALG_CAST128CBC
  70 #endif
  71 #ifndef SADB_X_EALG_RC5CBC
  72 #ifdef SADB_EALG_RC5CBC
  73 #define SADB_X_EALG_RC5CBC      SADB_EALG_RC5CBC
  74 #endif
  75 #endif
  76
  77 #define GETMSGSTR(str, num) \
  78 do { \
  79         if (sizeof((str)[0]) == 0 \
  80          || num >= sizeof(str)/sizeof((str)[0])) \
  81                 printf("%d ", (num)); \
  82         else if (strlen((str)[(num)]) == 0) \
  83                 printf("%d ", (num)); \
  84         else \
  85                 printf("%s ", (str)[(num)]); \
  86 } while (0)
  87
  88 #define GETMSGV2S(v2s, num) \
  89 do { \
  90         struct val2str *p;  \
  91         for (p = (v2s); p && p->str; p++) { \
  92                 if (p->val == (num)) \
  93                         break; \
  94         } \
  95         if (p && p->str) \
  96                 printf("%s ", p->str); \
  97         else \
  98                 printf("%d ", (num)); \
  99 } while (0)
 100
 101 static char *str_ipaddr (struct sockaddr *);
 102 static char *str_prefport (u_int, u_int, u_int);
 103 static char *str_time (time_t);
 104 static void str_lifetime_byte (struct sadb_lifetime *, char *);
 105
 106 struct val2str {
 107         int val;
 108         const char *str;
 109 };
 110
 111 /*
 112  * Must to be re-written about following strings.
 113  */
 114 static char *str_satype[] = {
 115         "unspec",
 116         "unknown",
 117         "ah",
 118         "esp",
 119         "unknown",
 120         "rsvp",
 121         "ospfv2",
 122         "ripv2",
 123         "mip",
 124         "ipcomp",
 125         "policy",
 126         "tcp",
 127 };
 128
 129 static char *str_mode[] = {
 130         "any",
 131         "transport",
 132         "tunnel",
 133 };
 134
 135 static char *str_upper[] = {
 136 /*0*/   "ip", "icmp", "igmp", "ggp", "ip4",
 137         "", "tcp", "", "egp", "",
 138 /*10*/  "", "", "", "", "",
 139         "", "", "udp", "", "",
 140 /*20*/  "", "", "idp", "", "",
 141         "", "", "", "", "tp",
 142 /*30*/  "", "", "", "", "",
 143         "", "", "", "", "",
 144 /*40*/  "", "ip6", "", "rt6", "frag6",
 145         "", "rsvp", "gre", "", "",
 146 /*50*/  "esp", "ah", "", "", "",
 147         "", "", "", "icmp6", "none",
 148 /*60*/  "dst6",
 149 };
 150
 151 static char *str_state[] = {
 152         "larval",
 153         "mature",
 154         "dying",
 155         "dead",
 156 };
 157
 158 static struct val2str str_alg_auth[] = {
 159         { SADB_AALG_NONE, "none", },
 160         { SADB_AALG_MD5HMAC, "hmac-md5", },
 161         { SADB_AALG_SHA1HMAC, "hmac-sha1", },
 162         { SADB_X_AALG_MD5, "md5", },
 163         { SADB_X_AALG_SHA, "sha", },
 164         { SADB_X_AALG_NULL, "null", },
 165         { SADB_X_AALG_TCP_MD5, "tcp-md5", },
 166 #ifdef SADB_X_AALG_SHA2_256
 167         { SADB_X_AALG_SHA2_256, "hmac-sha2-256", },
 168 #endif
 169 #ifdef SADB_X_AALG_SHA2_384
 170         { SADB_X_AALG_SHA2_384, "hmac-sha2-384", },
 171 #endif
 172 #ifdef SADB_X_AALG_SHA2_512
 173         { SADB_X_AALG_SHA2_512, "hmac-sha2-512", },
 174 #endif
 175         { -1, NULL, },
 176 };
 177
 178 static struct val2str str_alg_enc[] = {
 179         { SADB_EALG_NONE, "none", },
 180         { SADB_EALG_DESCBC, "des-cbc", },
 181         { SADB_EALG_3DESCBC, "3des-cbc", },
 182         { SADB_EALG_NULL, "null", },
 183 #ifdef SADB_X_EALG_RC5CBC
 184         { SADB_X_EALG_RC5CBC, "rc5-cbc", },
 185 #endif
 186         { SADB_X_EALG_CAST128CBC, "cast128-cbc", },
 187         { SADB_X_EALG_BLOWFISHCBC, "blowfish-cbc", },
 188 #ifdef SADB_X_EALG_RIJNDAELCBC
 189         { SADB_X_EALG_RIJNDAELCBC, "rijndael-cbc", },
 190 #endif
 191 #ifdef SADB_X_EALG_TWOFISHCBC
 192         { SADB_X_EALG_TWOFISHCBC, "twofish-cbc", },
 193 #endif
 194         { -1, NULL, },
 195 };
 196
 197 static struct val2str str_alg_comp[] = {
 198         { SADB_X_CALG_NONE, "none", },
 199         { SADB_X_CALG_OUI, "oui", },
 200         { SADB_X_CALG_DEFLATE, "deflate", },
 201         { SADB_X_CALG_LZS, "lzs", },
 202         { -1, NULL, },
 203 };
 204
 205 /*
 206  * dump SADB_MSG formated.  For debugging, you should use kdebug_sadb().
 207  */
 208 void
 209 pfkey_sadump(struct sadb_msg *m)
 210 {
 211         caddr_t mhp[SADB_EXT_MAX + 1];
 212         struct sadb_sa *m_sa;
 213         struct sadb_x_sa2 *m_sa2;
 214         struct sadb_lifetime *m_lftc, *m_lfth, *m_lfts;
 215         struct sadb_address *m_saddr, *m_daddr;
 216         struct sadb_key *m_auth, *m_enc;
 217
 218         /* check pfkey message. */
 219         if (pfkey_align(m, mhp)) {
 220                 printf("%s\n", ipsec_strerror());
 221                 return;
 222         }
 223         if (pfkey_check(mhp)) {
 224                 printf("%s\n", ipsec_strerror());
 225                 return;
 226         }
 227
 228         m_sa = (struct sadb_sa *)mhp[SADB_EXT_SA];
 229         m_sa2 = (struct sadb_x_sa2 *)mhp[SADB_X_EXT_SA2];
 230         m_lftc = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_CURRENT];
 231         m_lfth = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_HARD];
 232         m_lfts = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_SOFT];
 233         m_saddr = (struct sadb_address *)mhp[SADB_EXT_ADDRESS_SRC];
 234         m_daddr = (struct sadb_address *)mhp[SADB_EXT_ADDRESS_DST];
 235         m_auth = (struct sadb_key *)mhp[SADB_EXT_KEY_AUTH];
 236         m_enc = (struct sadb_key *)mhp[SADB_EXT_KEY_ENCRYPT];
 237
 238         /* source address */
 239         if (m_saddr == NULL) {
 240                 printf("no ADDRESS_SRC extension.\n");
 241                 return;
 242         }
 243         printf("%s ", str_ipaddr((struct sockaddr *)(m_saddr + 1)));
 244
 245         /* destination address */
 246         if (m_daddr == NULL) {
 247                 printf("no ADDRESS_DST extension.\n");
 248                 return;
 249         }
 250         printf("%s ", str_ipaddr((struct sockaddr *)(m_daddr + 1)));
 251
 252         /* SA type */
 253         if (m_sa == NULL) {
 254                 printf("no SA extension.\n");
 255                 return;
 256         }
 257         if (m_sa2 == NULL) {
 258                 printf("no SA2 extension.\n");
 259                 return;
 260         }
 261         printf("\n\t");
 262
 263         GETMSGSTR(str_satype, m->sadb_msg_satype);
 264
 265         printf("mode=");
 266         GETMSGSTR(str_mode, m_sa2->sadb_x_sa2_mode);
 267
 268         printf("spi=%u(0x%08x) reqid=%u(0x%08x)\n",
 269                 (u_int32_t)ntohl(m_sa->sadb_sa_spi),
 270                 (u_int32_t)ntohl(m_sa->sadb_sa_spi),
 271                 (u_int32_t)m_sa2->sadb_x_sa2_reqid,
 272                 (u_int32_t)m_sa2->sadb_x_sa2_reqid);
 273
 274         /* encryption key */
 275         if (m->sadb_msg_satype == SADB_X_SATYPE_IPCOMP) {
 276                 printf("\tC: ");
 277                 GETMSGV2S(str_alg_comp, m_sa->sadb_sa_encrypt);
 278         } else if (m->sadb_msg_satype == SADB_SATYPE_ESP) {
 279                 if (m_enc != NULL) {
 280                         printf("\tE: ");
 281                         GETMSGV2S(str_alg_enc, m_sa->sadb_sa_encrypt);
 282                         ipsec_hexdump((caddr_t)m_enc + sizeof(*m_enc),
 283                                       m_enc->sadb_key_bits / 8);
 284                         printf("\n");
 285                 }
 286         }
 287
 288         /* authentication key */
 289         if (m_auth != NULL) {
 290                 printf("\tA: ");
 291                 GETMSGV2S(str_alg_auth, m_sa->sadb_sa_auth);
 292                 ipsec_hexdump((caddr_t)m_auth + sizeof(*m_auth),
 293                               m_auth->sadb_key_bits / 8);
 294                 printf("\n");
 295         }
 296
 297         /* replay windoe size & flags */
 298         printf("\tseq=0x%08x replay=%u flags=0x%08x ",
 299                 m_sa2->sadb_x_sa2_sequence,
 300                 m_sa->sadb_sa_replay,
 301                 m_sa->sadb_sa_flags);
 302
 303         /* state */
 304         printf("state=");
 305         GETMSGSTR(str_state, m_sa->sadb_sa_state);
 306         printf("\n");
 307
 308         /* lifetime */
 309         if (m_lftc != NULL) {
 310                 time_t tmp_time = time(0);
 311
 312                 printf("\tcreated: %s",
 313                         str_time(m_lftc->sadb_lifetime_addtime));
 314                 printf("\tcurrent: %s\n", str_time(tmp_time));
 315                 printf("\tdiff: %lu(s)",
 316                         (u_long)(m_lftc->sadb_lifetime_addtime == 0 ?
 317                         0 : (tmp_time - m_lftc->sadb_lifetime_addtime)));
 318
 319                 printf("\thard: %lu(s)",
 320                         (u_long)(m_lfth == NULL ?
 321                         0 : m_lfth->sadb_lifetime_addtime));
 322                 printf("\tsoft: %lu(s)\n",
 323                         (u_long)(m_lfts == NULL ?
 324                         0 : m_lfts->sadb_lifetime_addtime));
 325
 326                 printf("\tlast: %s",
 327                         str_time(m_lftc->sadb_lifetime_usetime));
 328                 printf("\thard: %lu(s)",
 329                         (u_long)(m_lfth == NULL ?
 330                         0 : m_lfth->sadb_lifetime_usetime));
 331                 printf("\tsoft: %lu(s)\n",
 332                         (u_long)(m_lfts == NULL ?
 333                         0 : m_lfts->sadb_lifetime_usetime));
 334
 335                 str_lifetime_byte(m_lftc, "current");
 336                 str_lifetime_byte(m_lfth, "hard");
 337                 str_lifetime_byte(m_lfts, "soft");
 338                 printf("\n");
 339
 340                 printf("\tallocated: %lu",
 341                         (unsigned long)m_lftc->sadb_lifetime_allocations);
 342                 printf("\thard: %lu",
 343                         (u_long)(m_lfth == NULL ?
 344                         0 : m_lfth->sadb_lifetime_allocations));
 345                 printf("\tsoft: %lu\n",
 346                         (u_long)(m_lfts == NULL ?
 347                         0 : m_lfts->sadb_lifetime_allocations));
 348         }
 349
 350         printf("\tsadb_seq=%lu pid=%lu ",
 351                 (u_long)m->sadb_msg_seq,
 352                 (u_long)m->sadb_msg_pid);
 353
 354         /* XXX DEBUG */
 355         printf("refcnt=%u\n", m->sadb_msg_reserved);
 356
 357         return;
 358 }
 359
 360 void
 361 pfkey_spdump(struct sadb_msg *m)
 362 {
 363         char pbuf[NI_MAXSERV];
 364         caddr_t mhp[SADB_EXT_MAX + 1];
 365         struct sadb_address *m_saddr, *m_daddr;
 366         struct sadb_x_policy *m_xpl;
 367         struct sadb_lifetime *m_lft = NULL;
 368         struct sockaddr *sa;
 369         u_int16_t port;
 370
 371         /* check pfkey message. */
 372         if (pfkey_align(m, mhp)) {
 373                 printf("%s\n", ipsec_strerror());
 374                 return;
 375         }
 376         if (pfkey_check(mhp)) {
 377                 printf("%s\n", ipsec_strerror());
 378                 return;
 379         }
 380
 381         m_saddr = (struct sadb_address *)mhp[SADB_EXT_ADDRESS_SRC];
 382         m_daddr = (struct sadb_address *)mhp[SADB_EXT_ADDRESS_DST];
 383         m_xpl = (struct sadb_x_policy *)mhp[SADB_X_EXT_POLICY];
 384         m_lft = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_HARD];
 385
 386         /* source address */
 387         if (m_saddr == NULL) {
 388                 printf("no ADDRESS_SRC extension.\n");
 389                 return;
 390         }
 391         sa = (struct sockaddr *)(m_saddr + 1);
 392         switch (sa->sa_family) {
 393         case AF_INET:
 394         case AF_INET6:
 395                 if (getnameinfo(sa, sa->sa_len, NULL, 0, pbuf, sizeof(pbuf),
 396                     NI_NUMERICSERV) != 0)
 397                         port = 0;       /*XXX*/
 398                 else
 399                         port = atoi(pbuf);
 400                 printf("%s%s ", str_ipaddr(sa),
 401                         str_prefport(sa->sa_family,
 402                             m_saddr->sadb_address_prefixlen, port));
 403                 break;
 404         default:
 405                 printf("unknown-af ");
 406                 break;
 407         }
 408
 409         /* destination address */
 410         if (m_daddr == NULL) {
 411                 printf("no ADDRESS_DST extension.\n");
 412                 return;
 413         }
 414         sa = (struct sockaddr *)(m_daddr + 1);
 415         switch (sa->sa_family) {
 416         case AF_INET:
 417         case AF_INET6:
 418                 if (getnameinfo(sa, sa->sa_len, NULL, 0, pbuf, sizeof(pbuf),
 419                     NI_NUMERICSERV) != 0)
 420                         port = 0;       /*XXX*/
 421                 else
 422                         port = atoi(pbuf);
 423                 printf("%s%s ", str_ipaddr(sa),
 424                         str_prefport(sa->sa_family,
 425                             m_daddr->sadb_address_prefixlen, port));
 426                 break;
 427         default:
 428                 printf("unknown-af ");
 429                 break;
 430         }
 431
 432         /* upper layer protocol */
 433         if (m_saddr->sadb_address_proto != m_daddr->sadb_address_proto) {
 434                 printf("upper layer protocol mismatched.\n");
 435                 return;
 436         }
 437         if (m_saddr->sadb_address_proto == IPSEC_ULPROTO_ANY)
 438                 printf("any");
 439         else
 440                 GETMSGSTR(str_upper, m_saddr->sadb_address_proto);
 441
 442         /* policy */
 443     {
 444         char *d_xpl;
 445
 446         if (m_xpl == NULL) {
 447                 printf("no X_POLICY extension.\n");
 448                 return;
 449         }
 450         d_xpl = ipsec_dump_policy((char *)m_xpl, "\n\t");
 451
 452         /* dump SPD */
 453         printf("\n\t%s\n", d_xpl);
 454         free(d_xpl);
 455     }
 456
 457         /* lifetime */
 458         if (m_lft) {
 459                 printf("\tlifetime:%lu validtime:%lu\n",
 460                         (u_long)m_lft->sadb_lifetime_addtime,
 461                         (u_long)m_lft->sadb_lifetime_usetime);
 462         }
 463
 464         printf("\tspid=%ld seq=%ld pid=%ld\n",
 465                 (u_long)m_xpl->sadb_x_policy_id,
 466                 (u_long)m->sadb_msg_seq,
 467                 (u_long)m->sadb_msg_pid);
 468
 469         /* XXX TEST */
 470         printf("\trefcnt=%u\n", m->sadb_msg_reserved);
 471
 472         return;
 473 }
 474
 475 /*
 476  * set "ipaddress" to buffer.
 477  */
 478 static char *
 479 str_ipaddr(struct sockaddr *sa)
 480 {
 481         static char buf[NI_MAXHOST];
 482 #ifdef NI_WITHSCOPEID
 483         const int niflag = NI_NUMERICHOST | NI_WITHSCOPEID;
 484 #else
 485         const int niflag = NI_NUMERICHOST;
 486 #endif
 487
 488         if (sa == NULL)
 489                 return "";
 490
 491         if (getnameinfo(sa, sa->sa_len, buf, sizeof(buf), NULL, 0, niflag) == 0)
 492                 return buf;
 493         return NULL;
 494 }
 495
 496 /*
 497  * set "/prefix[port number]" to buffer.
 498  */
 499 static char *
 500 str_prefport(u_int family, u_int pref, u_int port)
 501 {
 502         static char buf[128];
 503         char prefbuf[128];
 504         char portbuf[128];
 505         int plen;
 506
 507         switch (family) {
 508         case AF_INET:
 509                 plen = sizeof(struct in_addr) << 3;
 510                 break;
 511         case AF_INET6:
 512                 plen = sizeof(struct in6_addr) << 3;
 513                 break;
 514         default:
 515                 return "?";
 516         }
 517
 518         if (pref == plen)
 519                 prefbuf[0] = '\0';
 520         else
 521                 snprintf(prefbuf, sizeof(prefbuf), "/%u", pref);
 522
 523         if (port == IPSEC_PORT_ANY)
 524                 snprintf(portbuf, sizeof(portbuf), "[%s]", "any");
 525         else
 526                 snprintf(portbuf, sizeof(portbuf), "[%u]", port);
 527
 528         snprintf(buf, sizeof(buf), "%s%s", prefbuf, portbuf);
 529
 530         return buf;
 531 }
 532
 533 /*
 534  * set "Mon Day Time Year" to buffer
 535  */
 536 static char *
 537 str_time(time_t t)
 538 {
 539         static char buf[128];
 540
 541         if (t == 0) {
 542                 int i = 0;
 543                 for (;i < 20;) buf[i++] = ' ';
 544         } else {
 545                 char *t0;
 546                 t0 = ctime(&t);
 547                 memcpy(buf, t0 + 4, 20);
 548         }
 549
 550         buf[20] = '\0';
 551
 552         return(buf);
 553 }
 554
 555 static void
 556 str_lifetime_byte(struct sadb_lifetime *x, char *str)
 557 {
 558         double y;
 559         char *unit;
 560         int w;
 561
 562         if (x == NULL) {
 563                 printf("\t%s: 0(bytes)", str);
 564                 return;
 565         }
 566
 567 #if 0
 568         if ((x->sadb_lifetime_bytes) / 1024 / 1024) {
 569                 y = (x->sadb_lifetime_bytes) * 1.0 / 1024 / 1024;
 570                 unit = "M";
 571                 w = 1;
 572         } else if ((x->sadb_lifetime_bytes) / 1024) {
 573                 y = (x->sadb_lifetime_bytes) * 1.0 / 1024;
 574                 unit = "K";
 575                 w = 1;
 576         } else {
 577                 y = (x->sadb_lifetime_bytes) * 1.0;
 578                 unit = "";
 579                 w = 0;
 580         }
 581 #else
 582         y = (x->sadb_lifetime_bytes) * 1.0;
 583         unit = "";
 584         w = 0;
 585 #endif
 586         printf("\t%s: %.*f(%sbytes)", str, w, y, unit);
 587 }