ipsec-tools/setkey/setkey.c

   1 /*      $KAME: setkey.c,v 1.36 2003/09/24 23:52:51 itojun Exp $ */
   2
   3 /*
   4  * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #ifdef HAVE_CONFIG_H
  33 #include "config.h"
  34 #endif
  35
  36 #include <sys/types.h>
  37 #include <sys/param.h>
  38 #include <sys/socket.h>
  39 #include <sys/time.h>
  40 #include <sys/stat.h>
  41 #include <sys/sysctl.h>
  42 #include <err.h>
  43 #include <netinet/in.h>
  44 #include <net/pfkeyv2.h>
  45 #ifdef HAVE_NETINET6_IPSEC
  46 #  include <netinet6/ipsec.h>
  47 #else
  48 #  include <netinet/ipsec.h>
  49 #endif
  50
  51 #include <stdio.h>
  52 #include <stdlib.h>
  53 #include <limits.h>
  54 #include <string.h>
  55 #include <ctype.h>
  56 #include <unistd.h>
  57 #include <errno.h>
  58 #include <netdb.h>
  59 #include <fcntl.h>
  60 #include <dirent.h>
  61 #include <time.h>
  62
  63 #ifdef HAVE_READLINE
  64 #include <readline/readline.h>
  65 #include <readline/history.h>
  66 #endif
  67
  68 #include "config.h"
  69 #include "var.h"
  70 #include "libpfkey.h"
  71 //#include "package_version.h"
  72 #define extern /* so that variables in extern.h are not extern... */
  73 #include "extern.h"
  74
  75 void usage (/*int*/);
  76 int main (int, char **);
  77 int get_supported (void);
  78 void sendkeyshort (u_int);
  79 void promisc (void);
  80 int postproc (struct sadb_msg *, int);
  81 int verifypriority (struct sadb_msg *m);
  82 int fileproc (const char *);
  83 const char *numstr (int);
  84 void shortdump_hdr (void);
  85 void shortdump (struct sadb_msg *);
  86 static void printdate (void);
  87 static int32_t gmt2local (time_t);
  88 void stdin_loop (void);
  89
  90 #define MODE_SCRIPT     1
  91 #define MODE_CMDDUMP    2
  92 #define MODE_CMDFLUSH   3
  93 #define MODE_PROMISC    4
  94 #define MODE_STDIN      5
  95
  96 int so;
  97
  98 int f_forever = 0;
  99 int f_all = 0;
 100 int f_verbose = 0;
 101 int f_mode = 0;
 102 int f_cmddump = 0;
 103 int f_policy = 0;
 104 int f_hexdump = 0;
 105 int f_tflag = 0;
 106 int f_notreally = 0;
 107 int f_withports = 0;
 108 #ifdef HAVE_POLICY_FWD
 109 int f_rfcmode = 1;
 110 #define RK_OPTS "rk"
 111 #else
 112 int f_rkwarn = 0;
 113 #define RK_OPTS ""
 114 static void rkwarn(void);
 115 static void
 116 rkwarn(void)
 117 {
 118         if (!f_rkwarn) {
 119                 f_rkwarn = 1;
 120                 printf("warning: -r and -k options are not supported in this environment\n");
 121         }
 122 }
 123
 124 #endif
 125 static time_t thiszone;
 126
 127 void
 128 usage(/*int only_version*/)
 129 {
 130         //printf("setkey @(#) %s (%s)\n", TOP_PACKAGE_STRING, TOP_PACKAGE_URL);
 131         //if (! only_version) {
 132                 printf("usage: setkey [-v" RK_OPTS "] file ...\n");
 133                 printf("       setkey [-nv" RK_OPTS "] -c\n");
 134                 printf("       setkey [-nv" RK_OPTS "] -f filename\n");
 135                 printf("       setkey [-Palpv" RK_OPTS "] -D\n");
 136                 printf("       setkey [-Pv] -F\n");
 137                 printf("       setkey [-H] -x\n");
 138                 printf("       setkey [-V] [-h]\n");
 139         //}
 140         exit(1);
 141 }
 142
 143 int
 144 main(argc, argv)
 145         int argc;
 146         char **argv;
 147 {
 148         FILE *fp = stdin;
 149         int c;
 150
 151         if (argc == 1) {
 152                 usage();
 153                 /* NOTREACHED */
 154         }
 155
 156         thiszone = gmt2local(0);
 157
 158         while ((c = getopt(argc, argv, "acdf:HlnvxDFPphVrk?")) != -1) {
 159                 switch (c) {
 160                 case 'c':
 161                         f_mode = MODE_STDIN;
 162 #ifdef HAVE_READLINE
 163                         /* disable filename completion */
 164                         rl_bind_key('\t', rl_insert);
 165 #endif
 166                         break;
 167                 case 'f':
 168                         f_mode = MODE_SCRIPT;
 169                         if ((fp = fopen(optarg, "r")) == NULL) {
 170                                 err(1, "fopen");
 171                                 /*NOTREACHED*/
 172                         }
 173                         break;
 174                 case 'D':
 175                         f_mode = MODE_CMDDUMP;
 176                         break;
 177                 case 'F':
 178                         f_mode = MODE_CMDFLUSH;
 179                         break;
 180                 case 'a':
 181                         f_all = 1;
 182                         break;
 183                 case 'l':
 184                         f_forever = 1;
 185                         break;
 186                 case 'n':
 187                         f_notreally = 1;
 188                         break;
 189 #ifdef __NetBSD__
 190                 case 'h':
 191 #endif
 192                 case 'H':
 193                         f_hexdump = 1;
 194                         break;
 195                 case 'x':
 196                         f_mode = MODE_PROMISC;
 197                         f_tflag++;
 198                         break;
 199                 case 'P':
 200                         f_policy = 1;
 201                         break;
 202                 case 'p':
 203                         f_withports = 1;
 204                         break;
 205                 case 'v':
 206                         f_verbose = 1;
 207                         break;
 208                 case 'r':
 209 #ifdef HAVE_POLICY_FWD
 210                         f_rfcmode = 1;
 211 #else
 212                         rkwarn();
 213 #endif
 214                         break;
 215                 case 'k':
 216 #ifdef HAVE_POLICY_FWD
 217                         f_rfcmode = 0;
 218 #else
 219                         rkwarn();
 220 #endif
 221                         break;
 222                 case 'V':
 223                         usage();
 224                         break;
 225                         /*NOTREACHED*/
 226 #ifndef __NetBSD__
 227                 case 'h':
 228 #endif
 229                 case '?':
 230                 default:
 231                         usage();
 232                         /*NOTREACHED*/
 233                 }
 234         }
 235
 236         argc -= optind;
 237         argv += optind;
 238
 239         if (argc > 0) {
 240                 while (argc--)
 241                         if (fileproc(*argv++) < 0) {
 242                                 err(1, "%s", argv[-1]);
 243                                 /*NOTREACHED*/
 244                         }
 245                 exit(0);
 246         }
 247
 248         so = pfkey_open();
 249         if (so < 0) {
 250                 perror("pfkey_open");
 251                 exit(1);
 252         }
 253
 254         switch (f_mode) {
 255         case MODE_CMDDUMP:
 256                 sendkeyshort(f_policy ? SADB_X_SPDDUMP : SADB_DUMP);
 257                 break;
 258         case MODE_CMDFLUSH:
 259                 sendkeyshort(f_policy ? SADB_X_SPDFLUSH: SADB_FLUSH);
 260                 break;
 261         case MODE_SCRIPT:
 262                 if (get_supported() < 0) {
 263                         errx(1, "%s", ipsec_strerror());
 264                         /*NOTREACHED*/
 265                 }
 266                 if (parse(&fp))
 267                         exit (1);
 268                 break;
 269         case MODE_STDIN:
 270                 if (get_supported() < 0) {
 271                         errx(1, "%s", ipsec_strerror());
 272                         /*NOTREACHED*/
 273                 }
 274                 stdin_loop();
 275                 break;
 276         case MODE_PROMISC:
 277                 promisc();
 278                 /*NOTREACHED*/
 279         default:
 280                 usage();
 281                 /*NOTREACHED*/
 282         }
 283
 284         exit(0);
 285 }
 286
 287 int
 288 get_supported()
 289 {
 290
 291         if (pfkey_send_register(so, SADB_SATYPE_UNSPEC) < 0)
 292                 return -1;
 293
 294         if (pfkey_recv_register(so) < 0)
 295                 return -1;
 296
 297         return (0);
 298 }
 299
 300 void
 301 stdin_loop()
 302 {
 303         char line[1024], *semicolon, *comment;
 304         size_t linelen = 0;
 305
 306         memset (line, 0, sizeof(line));
 307
 308         parse_init();
 309         while (1) {
 310 #ifdef HAVE_READLINE
 311                 char *rbuf;
 312                 rbuf = readline ("");
 313                 if (! rbuf)
 314                         break;
 315 #else
 316                 char rbuf[1024];
 317                 rbuf[0] = '\0';
 318                 if (fgets(rbuf, sizeof(rbuf), stdin) == NULL)
 319                         break;
 320                 if (rbuf[strlen(rbuf)-1] == '\n')
 321                         rbuf[strlen(rbuf)-1] = '\0';
 322 #endif
 323                 comment = strchr(rbuf, '#');
 324                 if (comment)
 325                         *comment = '\0';
 326
 327                 if (!rbuf[0])
 328                         continue;
 329
 330                 linelen += snprintf (&line[linelen], sizeof(line) - linelen,
 331                                      "%s%s", linelen > 0 ? " " : "", rbuf);
 332
 333                 semicolon = strchr(line, ';');
 334                 while (semicolon) {
 335                         char saved_char = *++semicolon;
 336                         *semicolon = '\0';
 337 #ifdef HAVE_READLINE
 338                         add_history (line);
 339 #endif
 340
 341 #ifdef HAVE_PFKEY_POLICY_PRIORITY
 342                         last_msg_type = -1;  /* invalid message type */
 343 #endif
 344
 345                         parse_string (line);
 346                         if (exit_now)
 347                                 return;
 348                         if (saved_char) {
 349                                 *semicolon = saved_char;
 350                                 linelen = strlen (semicolon);
 351                                 memmove (line, semicolon, linelen + 1);
 352                                 semicolon = strchr(line, ';');
 353                         }
 354                         else {
 355                                 semicolon = NULL;
 356                                 linelen = 0;
 357                         }
 358                 }
 359         }
 360 }
 361
 362 void
 363 sendkeyshort(type)
 364         u_int type;
 365 {
 366         struct sadb_msg msg;
 367
 368         msg.sadb_msg_version = PF_KEY_V2;
 369         msg.sadb_msg_type = type;
 370         msg.sadb_msg_errno = 0;
 371         msg.sadb_msg_satype = SADB_SATYPE_UNSPEC;
 372         msg.sadb_msg_len = PFKEY_UNIT64(sizeof(msg));
 373         msg.sadb_msg_reserved = 0;
 374         msg.sadb_msg_seq = 0;
 375         msg.sadb_msg_pid = getpid();
 376
 377         sendkeymsg((char *)&msg, sizeof(msg));
 378
 379         return;
 380 }
 381
 382 void
 383 promisc()
 384 {
 385         struct sadb_msg msg;
 386     union {                             // Wcast-align fix - force alignment
 387         u_int64_t force_align;
 388         u_char rbuf[1024 * 32]; /* XXX: Enough ? Should I do MSG_PEEK ? */
 389     } u_buf;
 390         ssize_t l;
 391
 392         msg.sadb_msg_version = PF_KEY_V2;
 393         msg.sadb_msg_type = SADB_X_PROMISC;
 394         msg.sadb_msg_errno = 0;
 395         msg.sadb_msg_satype = 1;
 396         msg.sadb_msg_len = PFKEY_UNIT64(sizeof(msg));
 397         msg.sadb_msg_reserved = 0;
 398         msg.sadb_msg_seq = 0;
 399         msg.sadb_msg_pid = getpid();
 400
 401         if ((l = send(so, &msg, sizeof(msg), 0)) < 0) {
 402                 err(1, "send");
 403                 /*NOTREACHED*/
 404         }
 405
 406         while (1) {
 407                 struct sadb_msg *base;
 408
 409                 if ((l = recv(so, u_buf.rbuf, sizeof(*base), MSG_PEEK)) < 0) {
 410                         err(1, "recv");
 411                         /*NOTREACHED*/
 412                 }
 413
 414                 if (l != sizeof(*base))
 415                         continue;
 416
 417                 base = (struct sadb_msg *)&u_buf;
 418                 if ((l = recv(so, u_buf.rbuf, PFKEY_UNUNIT64(base->sadb_msg_len),
 419                                 0)) < 0) {
 420                         err(1, "recv");
 421                         /*NOTREACHED*/
 422                 }
 423                 printdate();
 424                 if (f_hexdump) {
 425                         int i;
 426                         for (i = 0; i < l; i++) {
 427                                 if (i % 16 == 0)
 428                                         printf("%08x: ", i);
 429                                 printf("%02x ", u_buf.rbuf[i] & 0xff);
 430                                 if (i % 16 == 15)
 431                                         printf("\n");
 432                         }
 433                         if (l % 16)
 434                                 printf("\n");
 435                 }
 436                 /* adjust base pointer for promisc mode */
 437                 if (base->sadb_msg_type == SADB_X_PROMISC) {
 438                         if ((ssize_t)sizeof(*base) < l)
 439                                 base++;
 440                         else
 441                                 base = NULL;
 442                 }
 443                 if (base) {
 444                         kdebug_sadb(base);
 445                         printf("\n");
 446                         fflush(stdout);
 447                 }
 448         }
 449 }
 450
 451 int
 452 sendkeymsg(buf, len)
 453         char *buf;
 454         size_t len;
 455 {
 456     union {                             // Wcast-align fix - force alignment
 457         u_int64_t force_align;
 458         u_char rbuf[1024 * 32]; /* XXX: Enough ? Should I do MSG_PEEK ? */
 459     } u_buf;
 460         ssize_t l;
 461         struct sadb_msg *msg;
 462
 463         if (f_notreally) {
 464                 goto end;
 465         }
 466
 467     {
 468         struct timeval tv;
 469         tv.tv_sec = 1;
 470         tv.tv_usec = 0;
 471         if (setsockopt(so, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) < 0) {
 472                 perror("setsockopt");
 473                 goto end;
 474         }
 475     }
 476
 477         if (f_forever)
 478                 shortdump_hdr();
 479 again:
 480         if (f_verbose) {
 481                 kdebug_sadb(ALIGNED_CAST(struct sadb_msg *)buf);    // Wcast-align fix - aligned message buffer
 482                 printf("\n");
 483         }
 484         if (f_hexdump) {
 485                 int i;
 486                 for (i = 0; i < len; i++) {
 487                         if (i % 16 == 0)
 488                                 printf("%08x: ", i);
 489                         printf("%02x ", buf[i] & 0xff);
 490                         if (i % 16 == 15)
 491                                 printf("\n");
 492                 }
 493                 if (len % 16)
 494                         printf("\n");
 495         }
 496
 497         if ((l = send(so, buf, len, 0)) < 0) {
 498                 perror("send");
 499                 goto end;
 500         }
 501
 502         msg = (struct sadb_msg *)&u_buf;
 503         do {
 504                 if ((l = recv(so, u_buf.rbuf, sizeof(u_buf.rbuf), 0)) < 0) {
 505                         perror("recv");
 506                         goto end;
 507                 }
 508
 509                 if (PFKEY_UNUNIT64(msg->sadb_msg_len) != l) {
 510                         warnx("invalid keymsg length");
 511                         break;
 512                 }
 513
 514                 if (f_verbose) {
 515                         kdebug_sadb((struct sadb_msg *)&u_buf);
 516                         printf("\n");
 517                 }
 518                 if (postproc(msg, l) < 0)
 519                         break;
 520         } while (msg->sadb_msg_errno || msg->sadb_msg_seq);
 521
 522         if (f_forever) {
 523                 fflush(stdout);
 524                 sleep(1);
 525                 goto again;
 526         }
 527
 528 end:
 529         return (0);
 530 }
 531
 532 int
 533 postproc(msg, len)
 534         struct sadb_msg *msg;
 535         int len;
 536 {
 537 #ifdef HAVE_PFKEY_POLICY_PRIORITY
 538         static int priority_support_check = 0;
 539 #endif
 540
 541         if (msg->sadb_msg_errno != 0) {
 542                 char inf[80];
 543                 const char *errmsg = NULL;
 544
 545                 if (f_mode == MODE_SCRIPT)
 546                         snprintf(inf, sizeof(inf), "The result of line %d: ", lineno);
 547                 else
 548                         inf[0] = '\0';
 549
 550                 switch (msg->sadb_msg_errno) {
 551                 case ENOENT:
 552                         switch (msg->sadb_msg_type) {
 553                         case SADB_DELETE:
 554                         case SADB_GET:
 555                         case SADB_X_SPDDELETE:
 556                                 errmsg = "No entry";
 557                                 break;
 558                         case SADB_DUMP:
 559                                 errmsg = "No SAD entries";
 560                                 break;
 561                         case SADB_X_SPDDUMP:
 562                                 errmsg = "No SPD entries";
 563                                 break;
 564                         }
 565                         break;
 566                 default:
 567                         errmsg = strerror(msg->sadb_msg_errno);
 568                 }
 569                 printf("%s%s.\n", inf, errmsg);
 570                 return (-1);
 571         }
 572
 573         switch (msg->sadb_msg_type) {
 574         case SADB_GET:
 575                 if (f_withports)
 576                         pfkey_sadump_withports(msg);
 577                 else
 578                         pfkey_sadump(msg);
 579                 break;
 580
 581         case SADB_DUMP:
 582                 /* filter out DEAD SAs */
 583                 if (!f_all) {
 584                         caddr_t mhp[SADB_EXT_MAX + 1];
 585                         struct sadb_sa *sa;
 586                         pfkey_align(msg, mhp);
 587                         pfkey_check(mhp);
 588                         if ((sa = ALIGNED_CAST(struct sadb_sa *)mhp[SADB_EXT_SA]) != NULL) {     // Wcast-align (void*) - buffer of pointers to aligned structs in malloc'd buffer
 589                                 if (sa->sadb_sa_state == SADB_SASTATE_DEAD)
 590                                         break;
 591                         }
 592                 }
 593                 if (f_forever) {
 594                         /* TODO: f_withports */
 595                         shortdump(msg);
 596                 } else {
 597                         if (f_withports)
 598                                 pfkey_sadump_withports(msg);
 599                         else
 600                                 pfkey_sadump(msg);
 601                 }
 602                 msg = ALIGNED_CAST(struct sadb_msg *)((caddr_t)msg +
 603                                      PFKEY_UNUNIT64(msg->sadb_msg_len));           // Wcast-align fix (void*) - aligned msg buffer passed into function
 604                 if (f_verbose) {
 605                         kdebug_sadb((struct sadb_msg *)msg);
 606                         printf("\n");
 607                 }
 608                 break;
 609
 610         case SADB_X_SPDGET:
 611                 if (f_withports)
 612                         pfkey_spdump_withports(msg);
 613                 else
 614                         pfkey_spdump(msg);
 615                 break;
 616
 617         case SADB_X_SPDDUMP:
 618                 if (f_withports)
 619                         pfkey_spdump_withports(msg);
 620                 else
 621                         pfkey_spdump(msg);
 622                 if (msg->sadb_msg_seq == 0) break;
 623                 msg = ALIGNED_CAST(struct sadb_msg *)((caddr_t)msg +          // Wcast-align fix (void*) - aligned msg buffer passed into function
 624                                      PFKEY_UNUNIT64(msg->sadb_msg_len));
 625                 if (f_verbose) {
 626                         kdebug_sadb((struct sadb_msg *)msg);
 627                         printf("\n");
 628                 }
 629                 break;
 630 #ifdef HAVE_PFKEY_POLICY_PRIORITY
 631         case SADB_X_SPDADD:
 632                 if (last_msg_type == SADB_X_SPDADD && last_priority != 0 &&
 633                     msg->sadb_msg_pid == getpid() && !priority_support_check) {
 634                         priority_support_check = 1;
 635                         if (!verifypriority(msg))
 636                                 printf ("WARNING: Kernel does not support policy priorities\n");
 637                 }
 638                 break;
 639 #endif
 640         }
 641
 642         return (0);
 643 }
 644
 645 #ifdef HAVE_PFKEY_POLICY_PRIORITY
 646 int
 647 verifypriority(m)
 648         struct sadb_msg *m;
 649 {
 650         caddr_t mhp[SADB_EXT_MAX + 1];
 651         struct sadb_x_policy *xpl;
 652
 653         /* check pfkey message. */
 654         if (pfkey_align(m, mhp)) {
 655                 printf("(%s\n", ipsec_strerror());
 656                 return 0;
 657         }
 658         if (pfkey_check(mhp)) {
 659                 printf("%s\n", ipsec_strerror());
 660                 return 0;
 661         }
 662
 663         xpl = (struct sadb_x_policy *) mhp[SADB_X_EXT_POLICY];
 664
 665         if (xpl == NULL) {
 666                 printf("no X_POLICY extension.\n");
 667                 return 0;
 668         }
 669
 670         /* now make sure they match */
 671         if (last_priority != xpl->sadb_x_policy_priority)
 672                 return 0;
 673
 674         return 1;
 675 }
 676 #endif
 677
 678 int
 679 fileproc(filename)
 680         const char *filename;
 681 {
 682         int fd;
 683         ssize_t len, l;
 684         u_char *p, *ep;
 685         struct sadb_msg *msg;
 686         u_char rbuf[1024 * 32]; /* XXX: Enough ? Should I do MSG_PEEK ? */
 687
 688         fd = open(filename, O_RDONLY);
 689         if (fd < 0)
 690                 return -1;
 691
 692         l = 0;
 693         while (1) {
 694                 len = read(fd, rbuf + l, sizeof(rbuf) - l);
 695                 if (len < 0) {
 696                         close(fd);
 697                         return -1;
 698                 } else if (len == 0)
 699                         break;
 700                 l += len;
 701         }
 702
 703         if (l < sizeof(struct sadb_msg)) {
 704                 close(fd);
 705                 errno = EINVAL;
 706                 return -1;
 707         }
 708         close(fd);
 709
 710         p = rbuf;
 711         ep = rbuf + l;
 712
 713         while (p < ep) {
 714                 msg = ALIGNED_CAST(struct sadb_msg *)p;
 715                 len = PFKEY_UNUNIT64(msg->sadb_msg_len);
 716                 postproc(msg, len);
 717                 p += len;
 718         }
 719
 720         return (0);
 721 }
 722
 723
 724 /*------------------------------------------------------------*/
 725 static const char *satype[] = {
 726         NULL, NULL, "ah", "esp"
 727 };
 728 static const char *sastate[] = {
 729         "L", "M", "D", "d"
 730 };
 731 static const char *ipproto[] = {
 732 /*0*/   "ip", "icmp", "igmp", "ggp", "ip4",
 733         NULL, "tcp", NULL, "egp", NULL,
 734 /*10*/  NULL, NULL, NULL, NULL, NULL,
 735         NULL, NULL, "udp", NULL, NULL,
 736 /*20*/  NULL, NULL, "idp", NULL, NULL,
 737         NULL, NULL, NULL, NULL, "tp",
 738 /*30*/  NULL, NULL, NULL, NULL, NULL,
 739         NULL, NULL, NULL, NULL, NULL,
 740 /*40*/  NULL, "ip6", NULL, "rt6", "frag6",
 741         NULL, "rsvp", "gre", NULL, NULL,
 742 /*50*/  "esp", "ah", NULL, NULL, NULL,
 743         NULL, NULL, NULL, "icmp6", "none",
 744 /*60*/  "dst6",
 745 };
 746
 747 #define STR_OR_ID(x, tab) \
 748         (((x) < sizeof(tab)/sizeof(tab[0]) && tab[(x)]) ? tab[(x)] : numstr(x))
 749
 750 const char *
 751 numstr(x)
 752         int x;
 753 {
 754         static char buf[20];
 755         snprintf(buf, sizeof(buf), "#%d", x);
 756         return buf;
 757 }
 758
 759 void
 760 shortdump_hdr()
 761 {
 762         printf("%-4s %-3s %-1s %-8s %-7s %s -> %s\n",
 763                 "time", "p", "s", "spi", "ltime", "src", "dst");
 764 }
 765
 766 void
 767 shortdump(msg)
 768         struct sadb_msg *msg;
 769 {
 770         caddr_t mhp[SADB_EXT_MAX + 1];
 771         char buf[NI_MAXHOST], pbuf[NI_MAXSERV];
 772         struct sadb_sa *sa;
 773         struct sadb_address *saddr;
 774         struct sadb_lifetime *lts, *lth, *ltc;
 775         struct sockaddr *s;
 776         u_int t;
 777         time_t cur = time(0);
 778
 779         pfkey_align(msg, mhp);
 780         pfkey_check(mhp);
 781
 782         printf("%02lu%02lu", (u_long)(cur % 3600) / 60, (u_long)(cur % 60));
 783
 784         printf(" %-3s", STR_OR_ID(msg->sadb_msg_satype, satype));
 785
 786         if ((sa = ALIGNED_CAST(struct sadb_sa *)mhp[SADB_EXT_SA]) != NULL) {
 787                 printf(" %-1s", STR_OR_ID(sa->sadb_sa_state, sastate));
 788                 printf(" %08x", (u_int32_t)ntohl(sa->sadb_sa_spi));
 789         } else
 790                 printf("%-1s %-8s", "?", "?");
 791
 792         lts = ALIGNED_CAST(struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_SOFT];
 793         lth = ALIGNED_CAST(struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_HARD];
 794         ltc = ALIGNED_CAST(struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_CURRENT];
 795         if (lts && lth && ltc) {
 796                 if (ltc->sadb_lifetime_addtime == 0)
 797                         t = (u_long)0;
 798                 else
 799                         t = (u_long)(cur - ltc->sadb_lifetime_addtime);
 800                 if (t >= 1000)
 801                         strlcpy(buf, " big/", sizeof(buf));
 802                 else
 803                         snprintf(buf, sizeof(buf), " %3lu/", (u_long)t);
 804                 printf("%s", buf);
 805
 806                 t = (u_long)lth->sadb_lifetime_addtime;
 807                 if (t >= 1000)
 808                         strlcpy(buf, "big", sizeof(buf));
 809                 else
 810                         snprintf(buf, sizeof(buf), "%-3lu", (u_long)t);
 811                 printf("%s", buf);
 812         } else
 813                 printf(" ??\?/???");    /* backslash to avoid trigraph ??/ */
 814
 815         printf(" ");
 816
 817         if ((saddr = ALIGNED_CAST(struct sadb_address *)mhp[SADB_EXT_ADDRESS_SRC]) != NULL) {
 818                 if (saddr->sadb_address_proto)
 819                         printf("%s ", STR_OR_ID(saddr->sadb_address_proto, ipproto));
 820                 s = (struct sockaddr *)(saddr + 1);
 821                 getnameinfo(s, sysdep_sa_len((struct sockaddr *)s), buf, sizeof(buf),
 822                         pbuf, sizeof(pbuf), NI_NUMERICHOST|NI_NUMERICSERV);
 823                 if (strcmp(pbuf, "0") != 0)
 824                         printf("%s[%s]", buf, pbuf);
 825                 else
 826                         printf("%s", buf);
 827         } else
 828                 printf("?");
 829
 830         printf(" -> ");
 831
 832         if ((saddr = ALIGNED_CAST(struct sadb_address *)mhp[SADB_EXT_ADDRESS_DST]) != NULL) {
 833                 if (saddr->sadb_address_proto)
 834                         printf("%s ", STR_OR_ID(saddr->sadb_address_proto, ipproto));
 835
 836                 s = (struct sockaddr *)(saddr + 1);
 837                 getnameinfo(s, sysdep_sa_len(s), buf, sizeof(buf),
 838                         pbuf, sizeof(pbuf), NI_NUMERICHOST|NI_NUMERICSERV);
 839                 if (strcmp(pbuf, "0") != 0)
 840                         printf("%s[%s]", buf, pbuf);
 841                 else
 842                         printf("%s", buf);
 843         } else
 844                 printf("?");
 845
 846         printf("\n");
 847 }
 848
 849 /* From: tcpdump(1):gmt2local.c and util.c */
 850 /*
 851  * Print the timestamp
 852  */
 853 static void
 854 printdate()
 855 {
 856         struct timeval tp;
 857         int s;
 858
 859         if (gettimeofday(&tp, NULL) == -1) {
 860                 perror("gettimeofday");
 861                 return;
 862         }
 863
 864         if (f_tflag == 1) {
 865                 /* Default */
 866                 s = (tp.tv_sec + thiszone ) % 86400;
 867                 (void)printf("%02d:%02d:%02d.%06u ",
 868                     s / 3600, (s % 3600) / 60, s % 60, (u_int32_t)tp.tv_usec);
 869         } else if (f_tflag > 1) {
 870                 /* Unix timeval style */
 871                 (void)printf("%u.%06u ",
 872                     (u_int32_t)tp.tv_sec, (u_int32_t)tp.tv_usec);
 873         }
 874
 875         printf("\n");
 876 }
 877
 878 /*
 879  * Returns the difference between gmt and local time in seconds.
 880  * Use gmtime() and localtime() to keep things simple.
 881  */
 882 int32_t
 883 gmt2local(time_t t)
 884 {
 885         register int dt, dir;
 886         register struct tm *gmt, *loc;
 887         struct tm sgmt;
 888
 889         if (t == 0)
 890                 t = time(NULL);
 891         gmt = &sgmt;
 892         *gmt = *gmtime(&t);
 893         loc = localtime(&t);
 894         dt = (loc->tm_hour - gmt->tm_hour) * 60 * 60 +
 895             (loc->tm_min - gmt->tm_min) * 60;
 896
 897         /*
 898          * If the year or julian day is different, we span 00:00 GMT
 899          * and must add or subtract a day. Check the year first to
 900          * avoid problems when the julian day wraps.
 901          */
 902         dir = loc->tm_year - gmt->tm_year;
 903         if (dir == 0)
 904                 dir = loc->tm_yday - gmt->tm_yday;
 905         dt += dir * 24 * 60 * 60;
 906
 907         return (dt);
 908 }