1 /* $OpenBSD: show.c,v 1.115 2020/09/15 20:28:27 pamela 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 <netinet/in.h> 41 #include <netinet/if_ether.h> 42 #include <netmpls/mpls.h> 43 #include <arpa/inet.h> 44 45 #include <err.h> 46 #include <errno.h> 47 #include <netdb.h> 48 #include <stdio.h> 49 #include <stddef.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 #include <limits.h> 54 55 #include "show.h" 56 57 char *any_ntoa(const struct sockaddr *); 58 char *link_print(struct sockaddr *); 59 char *label_print(struct sockaddr *); 60 61 #define ROUNDUP(a) \ 62 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 63 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 64 65 /* 66 * Definitions for showing gateway flags. 67 */ 68 struct bits { 69 int b_mask; 70 char b_val; 71 }; 72 static const struct bits bits[] = { 73 { RTF_UP, 'U' }, 74 { RTF_GATEWAY, 'G' }, 75 { RTF_HOST, 'H' }, 76 { RTF_REJECT, 'R' }, 77 { RTF_DYNAMIC, 'D' }, 78 { RTF_MODIFIED, 'M' }, 79 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 80 { RTF_CLONING, 'C' }, 81 { RTF_MULTICAST,'m' }, 82 { RTF_LLINFO, 'L' }, 83 { RTF_STATIC, 'S' }, 84 { RTF_BLACKHOLE,'B' }, 85 { RTF_PROTO3, '3' }, 86 { RTF_PROTO2, '2' }, 87 { RTF_PROTO1, '1' }, 88 { RTF_CLONED, 'c' }, 89 { RTF_CACHED, 'h' }, 90 { RTF_MPATH, 'P' }, 91 { RTF_MPLS, 'T' }, 92 { RTF_LOCAL, 'l' }, 93 { RTF_BFD, 'F' }, 94 { RTF_BROADCAST,'b' }, 95 { RTF_CONNECTED,'n' }, 96 { 0 } 97 }; 98 99 int WID_DST(int); 100 void pr_rthdr(int); 101 void p_rtentry(struct rt_msghdr *); 102 void pr_family(int); 103 void p_sockaddr_mpls(struct sockaddr *, struct sockaddr *, int, int); 104 void p_flags(int, char *); 105 char *routename4(in_addr_t); 106 char *routename6(struct sockaddr_in6 *); 107 char *netname4(in_addr_t, struct sockaddr_in *); 108 char *netname6(struct sockaddr_in6 *, struct sockaddr_in6 *); 109 110 size_t 111 get_sysctl(const int *mib, u_int mcnt, char **buf) 112 { 113 size_t needed; 114 115 while (1) { 116 if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1) 117 err(1, "sysctl-estimate"); 118 if (needed == 0) 119 break; 120 if ((*buf = realloc(*buf, needed)) == NULL) 121 err(1, NULL); 122 if (sysctl(mib, mcnt, *buf, &needed, NULL, 0) == -1) { 123 if (errno == ENOMEM) 124 continue; 125 err(1, "sysctl"); 126 } 127 break; 128 } 129 130 return needed; 131 } 132 133 /* 134 * Print routing tables. 135 */ 136 void 137 p_rttables(int af, u_int tableid, char prio) 138 { 139 struct rt_msghdr *rtm; 140 char *buf = NULL, *next, *lim = NULL; 141 size_t needed; 142 int mib[7], mcnt; 143 144 mib[0] = CTL_NET; 145 mib[1] = PF_ROUTE; 146 mib[2] = 0; 147 mib[3] = af; 148 mib[4] = NET_RT_DUMP; 149 mib[5] = prio; 150 mib[6] = tableid; 151 mcnt = 7; 152 153 needed = get_sysctl(mib, mcnt, &buf); 154 lim = buf + needed; 155 156 if (pledge("stdio dns", NULL) == -1) 157 err(1, "pledge"); 158 159 printf("Routing tables\n"); 160 161 if (buf) { 162 for (next = buf; next < lim; next += rtm->rtm_msglen) { 163 rtm = (struct rt_msghdr *)next; 164 if (rtm->rtm_version != RTM_VERSION) 165 continue; 166 p_rtentry(rtm); 167 } 168 } 169 free(buf); 170 } 171 172 /* 173 * column widths; each followed by one space 174 * width of destination/gateway column 175 * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4 176 */ 177 #define WID_GW(af) ((af) == AF_INET6 ? 30 : 18) 178 179 int 180 WID_DST(int af) 181 { 182 183 switch (af) { 184 case AF_MPLS: 185 return 9; 186 case AF_INET6: 187 return 34; 188 default: 189 return 18; 190 } 191 } 192 193 /* 194 * Print header for routing table columns. 195 */ 196 void 197 pr_rthdr(int af) 198 { 199 switch (af) { 200 case PF_KEY: 201 printf("%-18s %-5s %-18s %-5s %-5s %-22s\n", 202 "Source", "Port", "Destination", 203 "Port", "Proto", "SA(Address/Proto/Type/Direction)"); 204 break; 205 case PF_MPLS: 206 printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n", 207 "In label", "Out label", "Op", "Gateway", 208 "Flags", "Refs", "Use", "Mtu", "Prio", "Interface"); 209 break; 210 default: 211 printf("%-*.*s %-*.*s %-6.6s %5.5s %8.8s %5.5s %4.4s %s", 212 WID_DST(af), WID_DST(af), "Destination", 213 WID_GW(af), WID_GW(af), "Gateway", 214 "Flags", "Refs", "Use", "Mtu", "Prio", "Iface"); 215 if (verbose) 216 printf(" %s", "Label"); 217 putchar('\n'); 218 break; 219 } 220 } 221 222 void 223 get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info) 224 { 225 int i; 226 227 for (i = 0; i < RTAX_MAX; i++) { 228 if (addrs & (1 << i)) { 229 rti_info[i] = sa; 230 sa = (struct sockaddr *)((char *)(sa) + 231 ROUNDUP(sa->sa_len)); 232 } else 233 rti_info[i] = NULL; 234 } 235 } 236 237 /* 238 * Print a routing table entry. 239 */ 240 void 241 p_rtentry(struct rt_msghdr *rtm) 242 { 243 static int old_af = -1; 244 struct sockaddr *sa = (struct sockaddr *)((char *)rtm + rtm->rtm_hdrlen); 245 struct sockaddr *mask, *rti_info[RTAX_MAX]; 246 char ifbuf[IF_NAMESIZE]; 247 char *label; 248 249 if (sa->sa_family == AF_KEY) 250 return; 251 252 get_rtaddrs(rtm->rtm_addrs, sa, rti_info); 253 254 if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) { 255 return; 256 } 257 258 if (strlen(so_label.rtlabel.sr_label)) { 259 if (!rti_info[RTAX_LABEL]) 260 return; 261 label = ((struct sockaddr_rtlabel *)rti_info[RTAX_LABEL])-> 262 sr_label; 263 if (strcmp(label, so_label.rtlabel.sr_label)) 264 return; 265 } 266 267 if (old_af != sa->sa_family) { 268 old_af = sa->sa_family; 269 pr_family(sa->sa_family); 270 pr_rthdr(sa->sa_family); 271 } 272 273 mask = rti_info[RTAX_NETMASK]; 274 if ((sa = rti_info[RTAX_DST]) == NULL) 275 return; 276 277 p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family)); 278 p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls, 279 WID_DST(sa->sa_family)); 280 281 p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST, 282 WID_GW(sa->sa_family)); 283 284 p_flags(rtm->rtm_flags, "%-6.6s "); 285 printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt, 286 rtm->rtm_rmx.rmx_pksent); 287 if (rtm->rtm_rmx.rmx_mtu) 288 printf("%5u ", rtm->rtm_rmx.rmx_mtu); 289 else 290 printf("%5s ", "-"); 291 putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' '); 292 printf(" %2d %-5.16s", rtm->rtm_priority, 293 if_indextoname(rtm->rtm_index, ifbuf)); 294 if (verbose && rti_info[RTAX_LABEL]) 295 printf(" %s", routename(rti_info[RTAX_LABEL])); 296 putchar('\n'); 297 } 298 299 /* 300 * Print address family header before a section of the routing table. 301 */ 302 void 303 pr_family(int af) 304 { 305 char *afname; 306 307 switch (af) { 308 case AF_INET: 309 afname = "Internet"; 310 break; 311 case AF_INET6: 312 afname = "Internet6"; 313 break; 314 case PF_KEY: 315 afname = "Encap"; 316 break; 317 case AF_MPLS: 318 afname = "MPLS"; 319 break; 320 default: 321 afname = NULL; 322 break; 323 } 324 if (afname) 325 printf("\n%s:\n", afname); 326 else 327 printf("\nProtocol Family %d:\n", af); 328 } 329 330 void 331 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 332 { 333 char *cp; 334 335 switch (sa->sa_family) { 336 case AF_INET6: 337 { 338 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 339 struct in6_addr *in6 = &sa6->sin6_addr; 340 341 /* 342 * XXX: This is a special workaround for KAME kernels. 343 * sin6_scope_id field of SA should be set in the future. 344 */ 345 if (IN6_IS_ADDR_LINKLOCAL(in6) || 346 IN6_IS_ADDR_MC_LINKLOCAL(in6) || 347 IN6_IS_ADDR_MC_INTFACELOCAL(in6)) { 348 /* XXX: override is ok? */ 349 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *) 350 &in6->s6_addr[2]); 351 *(u_short *)&in6->s6_addr[2] = 0; 352 } 353 if (flags & RTF_HOST) 354 cp = routename((struct sockaddr *)sa6); 355 else 356 cp = netname((struct sockaddr *)sa6, mask); 357 break; 358 } 359 case AF_MPLS: 360 return; 361 default: 362 if ((flags & RTF_HOST) || mask == NULL) 363 cp = routename(sa); 364 else 365 cp = netname(sa, mask); 366 break; 367 } 368 if (width < 0) 369 printf("%s", cp); 370 else { 371 if (nflag) 372 printf("%-*s ", width, cp); 373 else 374 printf("%-*.*s ", width, width, cp); 375 } 376 } 377 378 static char line[HOST_NAME_MAX+1]; 379 static char domain[HOST_NAME_MAX+1]; 380 381 void 382 p_sockaddr_mpls(struct sockaddr *in, struct sockaddr *out, int flags, int width) 383 { 384 if (in->sa_family != AF_MPLS) 385 return; 386 387 if (flags & MPLS_OP_POP || flags == MPLS_OP_LOCAL) { 388 printf("%-*s ", width, label_print(in)); 389 printf("%-*s ", width, label_print(NULL)); 390 } else { 391 printf("%-*s ", width, label_print(in)); 392 printf("%-*s ", width, label_print(out)); 393 } 394 395 printf("%-6s ", mpls_op(flags)); 396 } 397 398 void 399 p_flags(int f, char *format) 400 { 401 char name[33], *flags; 402 const struct bits *p = bits; 403 404 for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++) 405 if (p->b_mask & f) 406 *flags++ = p->b_val; 407 *flags = '\0'; 408 printf(format, name); 409 } 410 411 char * 412 routename(struct sockaddr *sa) 413 { 414 char *cp = NULL; 415 static int first = 1; 416 417 if (first) { 418 first = 0; 419 if (gethostname(domain, sizeof(domain)) == 0 && 420 (cp = strchr(domain, '.'))) 421 (void)strlcpy(domain, cp + 1, sizeof(domain)); 422 else 423 domain[0] = '\0'; 424 cp = NULL; 425 } 426 427 if (sa->sa_len == 0) { 428 (void)strlcpy(line, "default", sizeof(line)); 429 return (line); 430 } 431 432 switch (sa->sa_family) { 433 case AF_INET: 434 return 435 (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr)); 436 437 case AF_INET6: 438 { 439 struct sockaddr_in6 sin6; 440 441 memset(&sin6, 0, sizeof(sin6)); 442 memcpy(&sin6, sa, sa->sa_len); 443 sin6.sin6_len = sizeof(struct sockaddr_in6); 444 sin6.sin6_family = AF_INET6; 445 if (sa->sa_len == sizeof(struct sockaddr_in6) && 446 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 447 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) || 448 IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) && 449 sin6.sin6_scope_id == 0) { 450 sin6.sin6_scope_id = 451 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 452 sin6.sin6_addr.s6_addr[2] = 0; 453 sin6.sin6_addr.s6_addr[3] = 0; 454 } 455 return (routename6(&sin6)); 456 } 457 458 case AF_LINK: 459 return (link_print(sa)); 460 case AF_MPLS: 461 return (label_print(sa)); 462 case AF_UNSPEC: 463 if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) { 464 static char name[RTLABEL_LEN + 2]; 465 struct sockaddr_rtlabel *sr; 466 467 sr = (struct sockaddr_rtlabel *)sa; 468 snprintf(name, sizeof(name), "\"%s\"", sr->sr_label); 469 return (name); 470 } 471 /* FALLTHROUGH */ 472 default: 473 (void)snprintf(line, sizeof(line), "(%d) %s", 474 sa->sa_family, any_ntoa(sa)); 475 break; 476 } 477 return (line); 478 } 479 480 char * 481 routename4(in_addr_t in) 482 { 483 char *cp = NULL; 484 struct in_addr ina; 485 struct hostent *hp; 486 487 if (!cp && !nflag) { 488 if ((hp = gethostbyaddr((char *)&in, 489 sizeof(in), AF_INET)) != NULL) { 490 if ((cp = strchr(hp->h_name, '.')) && 491 !strcmp(cp + 1, domain)) 492 *cp = '\0'; 493 cp = hp->h_name; 494 } 495 } 496 ina.s_addr = in; 497 strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line)); 498 499 return (line); 500 } 501 502 char * 503 routename6(struct sockaddr_in6 *sin6) 504 { 505 int niflags = 0; 506 507 if (nflag) 508 niflags |= NI_NUMERICHOST; 509 else 510 niflags |= NI_NOFQDN; 511 512 if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len, 513 line, sizeof(line), NULL, 0, niflags) != 0) 514 strncpy(line, "invalid", sizeof(line)); 515 516 return (line); 517 } 518 519 char * 520 netname4(in_addr_t in, struct sockaddr_in *maskp) 521 { 522 char *cp = NULL; 523 struct hostent *hp; 524 in_addr_t mask; 525 int mbits; 526 527 mask = maskp && maskp->sin_len != 0 ? ntohl(maskp->sin_addr.s_addr) : 0; 528 if (!nflag && in != INADDR_ANY) { 529 if ((hp = gethostbyaddr((char *)&in, 530 sizeof(in), AF_INET)) != NULL) 531 cp = hp->h_name; 532 } 533 if (in == INADDR_ANY && mask == INADDR_ANY) 534 cp = "default"; 535 mbits = mask ? 33 - ffs(mask) : 0; 536 in = ntohl(in); 537 if (cp) 538 strlcpy(line, cp, sizeof(line)); 539 #define C(x) ((x) & 0xff) 540 else if (mbits < 9) 541 snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits); 542 else if (mbits < 17) 543 snprintf(line, sizeof(line), "%u.%u/%d", 544 C(in >> 24) , C(in >> 16), mbits); 545 else if (mbits < 25) 546 snprintf(line, sizeof(line), "%u.%u.%u/%d", 547 C(in >> 24), C(in >> 16), C(in >> 8), mbits); 548 else 549 snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24), 550 C(in >> 16), C(in >> 8), C(in), mbits); 551 #undef C 552 return (line); 553 } 554 555 char * 556 netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) 557 { 558 struct sockaddr_in6 sin6; 559 u_char *p; 560 int masklen, final = 0, illegal = 0; 561 int i, lim, flag, error; 562 char hbuf[NI_MAXHOST]; 563 564 sin6 = *sa6; 565 566 flag = 0; 567 masklen = 0; 568 if (mask) { 569 lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr); 570 lim = lim < (int)sizeof(struct in6_addr) ? 571 lim : (int)sizeof(struct in6_addr); 572 for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) { 573 if (final && *p) { 574 illegal++; 575 sin6.sin6_addr.s6_addr[i++] = 0x00; 576 continue; 577 } 578 579 switch (*p & 0xff) { 580 case 0xff: 581 masklen += 8; 582 break; 583 case 0xfe: 584 masklen += 7; 585 final++; 586 break; 587 case 0xfc: 588 masklen += 6; 589 final++; 590 break; 591 case 0xf8: 592 masklen += 5; 593 final++; 594 break; 595 case 0xf0: 596 masklen += 4; 597 final++; 598 break; 599 case 0xe0: 600 masklen += 3; 601 final++; 602 break; 603 case 0xc0: 604 masklen += 2; 605 final++; 606 break; 607 case 0x80: 608 masklen += 1; 609 final++; 610 break; 611 case 0x00: 612 final++; 613 break; 614 default: 615 final++; 616 illegal++; 617 break; 618 } 619 620 if (!illegal) 621 sin6.sin6_addr.s6_addr[i++] &= *p; 622 else 623 sin6.sin6_addr.s6_addr[i++] = 0x00; 624 } 625 while (i < (int)sizeof(struct in6_addr)) 626 sin6.sin6_addr.s6_addr[i++] = 0x00; 627 } else 628 masklen = 128; 629 630 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) 631 return ("default"); 632 633 if (illegal) 634 warnx("illegal prefixlen"); 635 636 if (nflag) 637 flag |= NI_NUMERICHOST; 638 error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 639 hbuf, sizeof(hbuf), NULL, 0, flag); 640 if (error) 641 snprintf(hbuf, sizeof(hbuf), "invalid"); 642 643 snprintf(line, sizeof(line), "%s/%d", hbuf, masklen); 644 return (line); 645 } 646 647 /* 648 * Return the name of the network whose address is given. 649 * The address is assumed to be that of a net or subnet, not a host. 650 */ 651 char * 652 netname(struct sockaddr *sa, struct sockaddr *mask) 653 { 654 switch (sa->sa_family) { 655 case AF_INET: 656 return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr, 657 (struct sockaddr_in *)mask); 658 case AF_INET6: 659 return netname6((struct sockaddr_in6 *)sa, 660 (struct sockaddr_in6 *)mask); 661 case AF_LINK: 662 return (link_print(sa)); 663 case AF_MPLS: 664 return (label_print(sa)); 665 default: 666 snprintf(line, sizeof(line), "af %d: %s", 667 sa->sa_family, any_ntoa(sa)); 668 break; 669 } 670 return (line); 671 } 672 673 static const char hexlist[] = "0123456789abcdef"; 674 675 char * 676 any_ntoa(const struct sockaddr *sa) 677 { 678 static char obuf[240]; 679 const char *in = sa->sa_data; 680 char *out = obuf; 681 int len = sa->sa_len - offsetof(struct sockaddr, sa_data); 682 683 *out++ = 'Q'; 684 do { 685 *out++ = hexlist[(*in >> 4) & 15]; 686 *out++ = hexlist[(*in++) & 15]; 687 *out++ = '.'; 688 } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]); 689 out[-1] = '\0'; 690 return (obuf); 691 } 692 693 char * 694 link_print(struct sockaddr *sa) 695 { 696 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 697 u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen; 698 699 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 700 sdl->sdl_slen == 0) { 701 (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index); 702 return (line); 703 } 704 switch (sdl->sdl_type) { 705 case IFT_ETHER: 706 case IFT_CARP: 707 return (ether_ntoa((struct ether_addr *)lla)); 708 default: 709 return (link_ntoa(sdl)); 710 } 711 } 712 713 char * 714 mpls_op(u_int32_t type) 715 { 716 switch (type & (MPLS_OP_PUSH | MPLS_OP_POP | MPLS_OP_SWAP)) { 717 case MPLS_OP_LOCAL: 718 return ("LOCAL"); 719 case MPLS_OP_POP: 720 return ("POP"); 721 case MPLS_OP_SWAP: 722 return ("SWAP"); 723 case MPLS_OP_PUSH: 724 return ("PUSH"); 725 default: 726 return ("?"); 727 } 728 } 729 730 char * 731 label_print(struct sockaddr *sa) 732 { 733 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; 734 735 if (smpls) 736 (void)snprintf(line, sizeof(line), "%u", 737 ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET); 738 else 739 (void)snprintf(line, sizeof(line), "-"); 740 741 return (line); 742 } 743