1 /* $OpenBSD: show.c,v 1.119 2021/01/30 22:00:06 danj Exp $ */ 2 /* $NetBSD: show.c,v 1.1 1996/11/15 18:01:41 gwr Exp $ */ 3 4 /* 5 * Copyright (c) 1983, 1988, 1993 6 * The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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/socket.h> 34 #include <sys/sysctl.h> 35 36 #include <net/if.h> 37 #include <net/if_dl.h> 38 #include <net/if_types.h> 39 #include <net/route.h> 40 #include <net/rtable.h> 41 #include <netinet/in.h> 42 #include <netinet/if_ether.h> 43 #include <netmpls/mpls.h> 44 #include <arpa/inet.h> 45 46 #include <err.h> 47 #include <errno.h> 48 #include <netdb.h> 49 #include <stdio.h> 50 #include <stddef.h> 51 #include <stdlib.h> 52 #include <string.h> 53 #include <unistd.h> 54 #include <limits.h> 55 56 #include "show.h" 57 58 char *any_ntoa(const struct sockaddr *); 59 char *link_print(struct sockaddr *); 60 char *label_print(struct sockaddr *); 61 62 #define ROUNDUP(a) \ 63 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 64 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 65 66 /* 67 * Definitions for showing gateway flags. 68 */ 69 struct bits { 70 int b_mask; 71 char b_val; 72 }; 73 static const struct bits bits[] = { 74 { RTF_UP, 'U' }, 75 { RTF_GATEWAY, 'G' }, 76 { RTF_HOST, 'H' }, 77 { RTF_REJECT, 'R' }, 78 { RTF_DYNAMIC, 'D' }, 79 { RTF_MODIFIED, 'M' }, 80 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 81 { RTF_CLONING, 'C' }, 82 { RTF_MULTICAST,'m' }, 83 { RTF_LLINFO, 'L' }, 84 { RTF_STATIC, 'S' }, 85 { RTF_BLACKHOLE,'B' }, 86 { RTF_PROTO3, '3' }, 87 { RTF_PROTO2, '2' }, 88 { RTF_PROTO1, '1' }, 89 { RTF_CLONED, 'c' }, 90 { RTF_CACHED, 'h' }, 91 { RTF_MPATH, 'P' }, 92 { RTF_MPLS, 'T' }, 93 { RTF_LOCAL, 'l' }, 94 { RTF_BFD, 'F' }, 95 { RTF_BROADCAST,'b' }, 96 { RTF_CONNECTED,'n' }, 97 { 0 } 98 }; 99 100 int WID_DST(int); 101 void pr_rthdr(int); 102 void p_rtentry(struct rt_msghdr *); 103 void pr_family(int); 104 void p_sockaddr_mpls(struct sockaddr *, struct sockaddr *, int, int); 105 void p_flags(int, char *); 106 char *routename4(in_addr_t); 107 char *routename6(struct sockaddr_in6 *); 108 char *netname4(in_addr_t, struct sockaddr_in *); 109 char *netname6(struct sockaddr_in6 *, struct sockaddr_in6 *); 110 111 size_t 112 get_sysctl(const int *mib, u_int mcnt, char **buf) 113 { 114 size_t needed; 115 116 while (1) { 117 if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1) 118 err(1, "sysctl-estimate"); 119 if (needed == 0) 120 break; 121 if ((*buf = realloc(*buf, needed)) == NULL) 122 err(1, NULL); 123 if (sysctl(mib, mcnt, *buf, &needed, NULL, 0) == -1) { 124 if (errno == ENOMEM) 125 continue; 126 err(1, "sysctl"); 127 } 128 break; 129 } 130 131 return needed; 132 } 133 134 /* 135 * Print preferred source address 136 */ 137 void 138 printsource(int af, u_int tableid) 139 { 140 struct sockaddr *sa; 141 char *buf = NULL, *next, *lim = NULL; 142 size_t needed; 143 int mib[7], mcnt, size; 144 145 mib[0] = CTL_NET; 146 mib[1] = PF_ROUTE; 147 mib[2] = 0; 148 mib[3] = af; 149 mib[4] = NET_RT_SOURCE; 150 mib[5] = tableid; 151 mcnt = 6; 152 153 needed = get_sysctl(mib, mcnt, &buf); 154 lim = buf + needed; 155 156 if (pledge("stdio", NULL) == -1) 157 err(1, "pledge"); 158 159 printf("Preferred source address set for rdomain %d\n", tableid); 160 161 if (buf) { 162 for (next = buf; next < lim; next += size) { 163 sa = (struct sockaddr *)next; 164 switch (sa->sa_family) { 165 case AF_INET: 166 size = sizeof(struct sockaddr_in); 167 printf("IPv4: "); 168 break; 169 case AF_INET6: 170 size = sizeof(struct sockaddr_in6); 171 printf("IPv6: "); 172 break; 173 } 174 p_sockaddr(sa, NULL, RTF_HOST, WID_DST(sa->sa_family)); 175 printf("\n"); 176 } 177 } 178 free(buf); 179 180 exit(0); 181 } 182 /* 183 * Print routing tables. 184 */ 185 void 186 p_rttables(int af, u_int tableid, char prio) 187 { 188 struct rt_msghdr *rtm; 189 char *buf = NULL, *next, *lim = NULL; 190 size_t needed; 191 int mib[7], mcnt; 192 193 mib[0] = CTL_NET; 194 mib[1] = PF_ROUTE; 195 mib[2] = 0; 196 mib[3] = af; 197 mib[4] = NET_RT_DUMP; 198 mib[5] = prio; 199 mib[6] = tableid; 200 mcnt = 7; 201 202 needed = get_sysctl(mib, mcnt, &buf); 203 lim = buf + needed; 204 205 if (pledge("stdio dns", NULL) == -1) 206 err(1, "pledge"); 207 208 printf("Routing tables\n"); 209 210 if (buf) { 211 for (next = buf; next < lim; next += rtm->rtm_msglen) { 212 rtm = (struct rt_msghdr *)next; 213 if (rtm->rtm_version != RTM_VERSION) 214 continue; 215 p_rtentry(rtm); 216 } 217 } 218 free(buf); 219 } 220 221 /* 222 * column widths; each followed by one space 223 * width of destination/gateway column 224 * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4 225 */ 226 #define WID_GW(af) ((af) == AF_INET6 ? 30 : 18) 227 228 int 229 WID_DST(int af) 230 { 231 232 switch (af) { 233 case AF_MPLS: 234 return 9; 235 case AF_INET6: 236 return 34; 237 default: 238 return 18; 239 } 240 } 241 242 /* 243 * Print header for routing table columns. 244 */ 245 void 246 pr_rthdr(int af) 247 { 248 switch (af) { 249 case PF_KEY: 250 printf("%-18s %-5s %-18s %-5s %-5s %-22s\n", 251 "Source", "Port", "Destination", 252 "Port", "Proto", "SA(Address/Proto/Type/Direction)"); 253 break; 254 case PF_MPLS: 255 printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n", 256 "In label", "Out label", "Op", "Gateway", 257 "Flags", "Refs", "Use", "Mtu", "Prio", "Interface"); 258 break; 259 default: 260 printf("%-*.*s %-*.*s %-6.6s %5.5s %8.8s %5.5s %4.4s %s", 261 WID_DST(af), WID_DST(af), "Destination", 262 WID_GW(af), WID_GW(af), "Gateway", 263 "Flags", "Refs", "Use", "Mtu", "Prio", "Iface"); 264 if (verbose) 265 printf(" %s", "Label"); 266 putchar('\n'); 267 break; 268 } 269 } 270 271 void 272 get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info) 273 { 274 int i; 275 276 for (i = 0; i < RTAX_MAX; i++) { 277 if (addrs & (1 << i)) { 278 rti_info[i] = sa; 279 sa = (struct sockaddr *)((char *)(sa) + 280 ROUNDUP(sa->sa_len)); 281 } else 282 rti_info[i] = NULL; 283 } 284 } 285 286 /* 287 * Print a routing table entry. 288 */ 289 void 290 p_rtentry(struct rt_msghdr *rtm) 291 { 292 static int old_af = -1; 293 struct sockaddr *sa = (struct sockaddr *)((char *)rtm + rtm->rtm_hdrlen); 294 struct sockaddr *mask, *rti_info[RTAX_MAX]; 295 char ifbuf[IF_NAMESIZE]; 296 char *label; 297 298 if (sa->sa_family == AF_KEY) 299 return; 300 301 get_rtaddrs(rtm->rtm_addrs, sa, rti_info); 302 303 if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) { 304 return; 305 } 306 307 if (strlen(so_label.rtlabel.sr_label)) { 308 if (!rti_info[RTAX_LABEL]) 309 return; 310 label = ((struct sockaddr_rtlabel *)rti_info[RTAX_LABEL])-> 311 sr_label; 312 if (strcmp(label, so_label.rtlabel.sr_label)) 313 return; 314 } 315 316 if (old_af != sa->sa_family) { 317 old_af = sa->sa_family; 318 pr_family(sa->sa_family); 319 pr_rthdr(sa->sa_family); 320 } 321 322 mask = rti_info[RTAX_NETMASK]; 323 if ((sa = rti_info[RTAX_DST]) == NULL) 324 return; 325 326 p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family)); 327 p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls, 328 WID_DST(sa->sa_family)); 329 330 p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST, 331 WID_GW(sa->sa_family)); 332 333 p_flags(rtm->rtm_flags, "%-6.6s "); 334 printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt, 335 rtm->rtm_rmx.rmx_pksent); 336 if (rtm->rtm_rmx.rmx_mtu) 337 printf("%5u ", rtm->rtm_rmx.rmx_mtu); 338 else 339 printf("%5s ", "-"); 340 putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' '); 341 printf(" %2d %-5.16s", rtm->rtm_priority, 342 if_indextoname(rtm->rtm_index, ifbuf)); 343 if (verbose && rti_info[RTAX_LABEL]) 344 printf(" %s", routename(rti_info[RTAX_LABEL])); 345 putchar('\n'); 346 } 347 348 /* 349 * Print address family header before a section of the routing table. 350 */ 351 void 352 pr_family(int af) 353 { 354 char *afname; 355 356 switch (af) { 357 case AF_INET: 358 afname = "Internet"; 359 break; 360 case AF_INET6: 361 afname = "Internet6"; 362 break; 363 case PF_KEY: 364 afname = "Encap"; 365 break; 366 case AF_MPLS: 367 afname = "MPLS"; 368 break; 369 default: 370 afname = NULL; 371 break; 372 } 373 if (afname) 374 printf("\n%s:\n", afname); 375 else 376 printf("\nProtocol Family %d:\n", af); 377 } 378 379 void 380 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 381 { 382 char *cp; 383 384 switch (sa->sa_family) { 385 case AF_INET6: 386 { 387 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 388 #ifdef __KAME__ 389 struct in6_addr *in6 = &sa6->sin6_addr; 390 391 /* 392 * XXX: This is a special workaround for KAME kernels. 393 * sin6_scope_id field of SA should be set in the future. 394 */ 395 if ((IN6_IS_ADDR_LINKLOCAL(in6) || 396 IN6_IS_ADDR_MC_LINKLOCAL(in6) || 397 IN6_IS_ADDR_MC_INTFACELOCAL(in6)) && 398 sa6->sin6_scope_id == 0) { 399 /* XXX: override is ok? */ 400 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *) 401 &in6->s6_addr[2]); 402 *(u_short *)&in6->s6_addr[2] = 0; 403 } 404 #endif 405 if (flags & RTF_HOST) 406 cp = routename((struct sockaddr *)sa6); 407 else 408 cp = netname((struct sockaddr *)sa6, mask); 409 break; 410 } 411 case AF_MPLS: 412 return; 413 default: 414 if ((flags & RTF_HOST) || mask == NULL) 415 cp = routename(sa); 416 else 417 cp = netname(sa, mask); 418 break; 419 } 420 if (width < 0) 421 printf("%s", cp); 422 else { 423 if (nflag) 424 printf("%-*s ", width, cp); 425 else 426 printf("%-*.*s ", width, width, cp); 427 } 428 } 429 430 static char line[HOST_NAME_MAX+1]; 431 static char domain[HOST_NAME_MAX+1]; 432 433 void 434 p_sockaddr_mpls(struct sockaddr *in, struct sockaddr *out, int flags, int width) 435 { 436 if (in->sa_family != AF_MPLS) 437 return; 438 439 if (flags & MPLS_OP_POP || flags == MPLS_OP_LOCAL) { 440 printf("%-*s ", width, label_print(in)); 441 printf("%-*s ", width, label_print(NULL)); 442 } else { 443 printf("%-*s ", width, label_print(in)); 444 printf("%-*s ", width, label_print(out)); 445 } 446 447 printf("%-6s ", mpls_op(flags)); 448 } 449 450 void 451 p_flags(int f, char *format) 452 { 453 char name[33], *flags; 454 const struct bits *p = bits; 455 456 for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++) 457 if (p->b_mask & f) 458 *flags++ = p->b_val; 459 *flags = '\0'; 460 printf(format, name); 461 } 462 463 char * 464 routename(struct sockaddr *sa) 465 { 466 char *cp = NULL; 467 static int first = 1; 468 469 if (first) { 470 first = 0; 471 if (gethostname(domain, sizeof(domain)) == 0 && 472 (cp = strchr(domain, '.'))) 473 (void)strlcpy(domain, cp + 1, sizeof(domain)); 474 else 475 domain[0] = '\0'; 476 cp = NULL; 477 } 478 479 if (sa->sa_len == 0) { 480 (void)strlcpy(line, "default", sizeof(line)); 481 return (line); 482 } 483 484 switch (sa->sa_family) { 485 case AF_INET: 486 return 487 (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr)); 488 489 case AF_INET6: 490 { 491 struct sockaddr_in6 sin6; 492 493 memset(&sin6, 0, sizeof(sin6)); 494 memcpy(&sin6, sa, sa->sa_len); 495 sin6.sin6_len = sizeof(struct sockaddr_in6); 496 sin6.sin6_family = AF_INET6; 497 #ifdef __KAME__ 498 if (sa->sa_len == sizeof(struct sockaddr_in6) && 499 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 500 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) || 501 IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) && 502 sin6.sin6_scope_id == 0) { 503 sin6.sin6_scope_id = 504 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 505 sin6.sin6_addr.s6_addr[2] = 0; 506 sin6.sin6_addr.s6_addr[3] = 0; 507 } 508 #endif 509 return (routename6(&sin6)); 510 } 511 512 case AF_LINK: 513 return (link_print(sa)); 514 case AF_MPLS: 515 return (label_print(sa)); 516 case AF_UNSPEC: 517 if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) { 518 static char name[RTLABEL_LEN + 2]; 519 struct sockaddr_rtlabel *sr; 520 521 sr = (struct sockaddr_rtlabel *)sa; 522 snprintf(name, sizeof(name), "\"%s\"", sr->sr_label); 523 return (name); 524 } 525 /* FALLTHROUGH */ 526 default: 527 (void)snprintf(line, sizeof(line), "(%d) %s", 528 sa->sa_family, any_ntoa(sa)); 529 break; 530 } 531 return (line); 532 } 533 534 char * 535 routename4(in_addr_t in) 536 { 537 char *cp = NULL; 538 struct in_addr ina; 539 struct hostent *hp; 540 541 if (!cp && !nflag) { 542 if ((hp = gethostbyaddr((char *)&in, 543 sizeof(in), AF_INET)) != NULL) { 544 if ((cp = strchr(hp->h_name, '.')) && 545 !strcmp(cp + 1, domain)) 546 *cp = '\0'; 547 cp = hp->h_name; 548 } 549 } 550 ina.s_addr = in; 551 strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line)); 552 553 return (line); 554 } 555 556 char * 557 routename6(struct sockaddr_in6 *sin6) 558 { 559 int niflags = 0; 560 561 if (nflag) 562 niflags |= NI_NUMERICHOST; 563 else 564 niflags |= NI_NOFQDN; 565 566 if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len, 567 line, sizeof(line), NULL, 0, niflags) != 0) 568 strncpy(line, "invalid", sizeof(line)); 569 570 return (line); 571 } 572 573 char * 574 netname4(in_addr_t in, struct sockaddr_in *maskp) 575 { 576 char *cp = NULL; 577 struct hostent *hp; 578 in_addr_t mask; 579 int mbits; 580 581 mask = maskp && maskp->sin_len != 0 ? ntohl(maskp->sin_addr.s_addr) : 0; 582 if (!nflag && in != INADDR_ANY) { 583 if ((hp = gethostbyaddr((char *)&in, 584 sizeof(in), AF_INET)) != NULL) 585 cp = hp->h_name; 586 } 587 if (in == INADDR_ANY && mask == INADDR_ANY) 588 cp = "default"; 589 mbits = mask ? 33 - ffs(mask) : 0; 590 in = ntohl(in); 591 if (cp) 592 strlcpy(line, cp, sizeof(line)); 593 #define C(x) ((x) & 0xff) 594 else if (mbits < 9) 595 snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits); 596 else if (mbits < 17) 597 snprintf(line, sizeof(line), "%u.%u/%d", 598 C(in >> 24) , C(in >> 16), mbits); 599 else if (mbits < 25) 600 snprintf(line, sizeof(line), "%u.%u.%u/%d", 601 C(in >> 24), C(in >> 16), C(in >> 8), mbits); 602 else 603 snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24), 604 C(in >> 16), C(in >> 8), C(in), mbits); 605 #undef C 606 return (line); 607 } 608 609 char * 610 netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) 611 { 612 struct sockaddr_in6 sin6; 613 u_char *p; 614 int masklen, final = 0, illegal = 0; 615 int i, lim, flag, error; 616 char hbuf[NI_MAXHOST]; 617 618 sin6 = *sa6; 619 620 flag = 0; 621 masklen = 0; 622 if (mask) { 623 lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr); 624 lim = lim < (int)sizeof(struct in6_addr) ? 625 lim : (int)sizeof(struct in6_addr); 626 for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) { 627 if (final && *p) { 628 illegal++; 629 sin6.sin6_addr.s6_addr[i++] = 0x00; 630 continue; 631 } 632 633 switch (*p & 0xff) { 634 case 0xff: 635 masklen += 8; 636 break; 637 case 0xfe: 638 masklen += 7; 639 final++; 640 break; 641 case 0xfc: 642 masklen += 6; 643 final++; 644 break; 645 case 0xf8: 646 masklen += 5; 647 final++; 648 break; 649 case 0xf0: 650 masklen += 4; 651 final++; 652 break; 653 case 0xe0: 654 masklen += 3; 655 final++; 656 break; 657 case 0xc0: 658 masklen += 2; 659 final++; 660 break; 661 case 0x80: 662 masklen += 1; 663 final++; 664 break; 665 case 0x00: 666 final++; 667 break; 668 default: 669 final++; 670 illegal++; 671 break; 672 } 673 674 if (!illegal) 675 sin6.sin6_addr.s6_addr[i++] &= *p; 676 else 677 sin6.sin6_addr.s6_addr[i++] = 0x00; 678 } 679 while (i < (int)sizeof(struct in6_addr)) 680 sin6.sin6_addr.s6_addr[i++] = 0x00; 681 } else 682 masklen = 128; 683 684 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) 685 return ("default"); 686 687 if (illegal) 688 warnx("illegal prefixlen"); 689 690 if (nflag) 691 flag |= NI_NUMERICHOST; 692 error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 693 hbuf, sizeof(hbuf), NULL, 0, flag); 694 if (error) 695 snprintf(hbuf, sizeof(hbuf), "invalid"); 696 697 snprintf(line, sizeof(line), "%s/%d", hbuf, masklen); 698 return (line); 699 } 700 701 /* 702 * Return the name of the network whose address is given. 703 * The address is assumed to be that of a net or subnet, not a host. 704 */ 705 char * 706 netname(struct sockaddr *sa, struct sockaddr *mask) 707 { 708 switch (sa->sa_family) { 709 case AF_INET: 710 return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr, 711 (struct sockaddr_in *)mask); 712 case AF_INET6: 713 return netname6((struct sockaddr_in6 *)sa, 714 (struct sockaddr_in6 *)mask); 715 case AF_LINK: 716 return (link_print(sa)); 717 case AF_MPLS: 718 return (label_print(sa)); 719 default: 720 snprintf(line, sizeof(line), "af %d: %s", 721 sa->sa_family, any_ntoa(sa)); 722 break; 723 } 724 return (line); 725 } 726 727 static const char hexlist[] = "0123456789abcdef"; 728 729 char * 730 any_ntoa(const struct sockaddr *sa) 731 { 732 static char obuf[240]; 733 const char *in = sa->sa_data; 734 char *out = obuf; 735 int len = sa->sa_len - offsetof(struct sockaddr, sa_data); 736 737 *out++ = 'Q'; 738 do { 739 *out++ = hexlist[(*in >> 4) & 15]; 740 *out++ = hexlist[(*in++) & 15]; 741 *out++ = '.'; 742 } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]); 743 out[-1] = '\0'; 744 return (obuf); 745 } 746 747 char * 748 link_print(struct sockaddr *sa) 749 { 750 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 751 u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen; 752 753 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 754 sdl->sdl_slen == 0) { 755 (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index); 756 return (line); 757 } 758 switch (sdl->sdl_type) { 759 case IFT_ETHER: 760 case IFT_CARP: 761 return (ether_ntoa((struct ether_addr *)lla)); 762 default: 763 return (link_ntoa(sdl)); 764 } 765 } 766 767 char * 768 mpls_op(u_int32_t type) 769 { 770 switch (type & (MPLS_OP_PUSH | MPLS_OP_POP | MPLS_OP_SWAP)) { 771 case MPLS_OP_LOCAL: 772 return ("LOCAL"); 773 case MPLS_OP_POP: 774 return ("POP"); 775 case MPLS_OP_SWAP: 776 return ("SWAP"); 777 case MPLS_OP_PUSH: 778 return ("PUSH"); 779 default: 780 return ("?"); 781 } 782 } 783 784 char * 785 label_print(struct sockaddr *sa) 786 { 787 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; 788 789 if (smpls) 790 (void)snprintf(line, sizeof(line), "%u", 791 ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET); 792 else 793 (void)snprintf(line, sizeof(line), "-"); 794 795 return (line); 796 } 797