1 /* $NetBSD: rtutil.c,v 1.6 2015/03/23 18:33:17 roy Exp $ */ 2 /* $OpenBSD: show.c,v 1.1 2006/05/27 19:16:37 claudio 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/param.h> 34 #include <sys/protosw.h> 35 #include <sys/socket.h> 36 #include <sys/mbuf.h> 37 #include <sys/sysctl.h> 38 39 #include <net/if.h> 40 #include <net/if_dl.h> 41 #include <net/if_types.h> 42 #include <net/pfvar.h> 43 #include <net/pfkeyv2.h> 44 #include <net/route.h> 45 #include <netinet/in.h> 46 #include <netinet/if_ether.h> 47 #include <netatalk/at.h> 48 #include <netmpls/mpls.h> 49 #include <arpa/inet.h> 50 51 #include <err.h> 52 #include <errno.h> 53 #include <netdb.h> 54 #include <stdio.h> 55 #include <stddef.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <unistd.h> 59 60 #include "prog_ops.h" 61 #include "rtutil.h" 62 63 64 #define PLEN (LONG_BIT / 4 + 2) 65 #define PFKEYV2_CHUNK sizeof(u_int64_t) 66 static char *link_print(const struct sockaddr *); 67 68 /* 69 * Definitions for showing gateway flags. 70 */ 71 struct bits { 72 int b_mask; 73 char b_val; 74 }; 75 static const struct bits bits[] = { 76 { RTF_UP, 'U' }, 77 { RTF_GATEWAY, 'G' }, 78 { RTF_HOST, 'H' }, 79 { RTF_REJECT, 'R' }, 80 { RTF_BLACKHOLE, 'B' }, 81 { RTF_DYNAMIC, 'D' }, 82 { RTF_MODIFIED, 'M' }, 83 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 84 { RTF_MASK, 'm' }, /* Mask Present -- for routing messages only */ 85 { RTF_CLONING, 'C' }, 86 { RTF_XRESOLVE, 'X' }, 87 { RTF_LLINFO, 'L' }, 88 { RTF_STATIC, 'S' }, 89 { RTF_PROTO1, '1' }, 90 { RTF_PROTO2, '2' }, 91 /* { RTF_PROTO3, '3' }, */ 92 { RTF_CLONED, 'c' }, 93 /* { RTF_JUMBO, 'J' }, */ 94 { RTF_ANNOUNCE, 'p' }, 95 { RTF_LOCAL, 'l'}, 96 { RTF_BROADCAST, 'b'}, 97 { 0, 0 } 98 }; 99 100 #ifndef SMALL 101 static void p_tag(const struct sockaddr *sa); 102 #endif 103 static void p_rtentry(struct rt_msghdr *, int, int); 104 105 /* 106 * Print routing tables. 107 */ 108 void 109 p_rttables(int paf, int flags, int pflags, int interesting) 110 { 111 struct rt_msghdr *rtm; 112 char *buf = NULL, *next, *lim = NULL; 113 size_t needed; 114 int mib[6]; 115 struct sockaddr *sa; 116 117 mib[0] = CTL_NET; 118 mib[1] = PF_ROUTE; 119 mib[2] = 0; 120 mib[3] = paf; 121 mib[4] = NET_RT_DUMP; 122 mib[5] = 0; 123 if (prog_sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 124 err(1, "route-sysctl-estimate"); 125 if (needed > 0) { 126 if ((buf = malloc(needed)) == 0) 127 err(1, NULL); 128 if (prog_sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 129 err(1, "sysctl of routing table"); 130 lim = buf + needed; 131 } 132 133 printf("Routing tables\n"); 134 135 if (buf) { 136 for (next = buf; next < lim; next += rtm->rtm_msglen) { 137 rtm = (struct rt_msghdr *)next; 138 sa = (struct sockaddr *)(rtm + 1); 139 if ((rtm->rtm_flags & pflags) != pflags) 140 continue; 141 if (paf != AF_UNSPEC && sa->sa_family != paf) 142 continue; 143 p_rtentry(rtm, flags, interesting); 144 } 145 free(buf); 146 buf = NULL; 147 } 148 149 if (paf != 0 && paf != PF_KEY) 150 return; 151 152 #if 0 /* XXX-elad */ 153 mib[0] = CTL_NET; 154 mib[1] = PF_KEY; 155 mib[2] = PF_KEY_V2; 156 mib[3] = NET_KEY_SPD_DUMP; 157 mib[4] = mib[5] = 0; 158 159 if (prog_sysctl(mib, 4, NULL, &needed, NULL, 0) == -1) { 160 if (errno == ENOPROTOOPT) 161 return; 162 err(1, "spd-sysctl-estimate"); 163 } 164 if (needed > 0) { 165 if ((buf = malloc(needed)) == 0) 166 err(1, NULL); 167 if (prog_sysctl(mib, 4, buf, &needed, NULL, 0) == -1) 168 err(1,"sysctl of spd"); 169 lim = buf + needed; 170 } 171 172 if (buf) { 173 printf("\nEncap:\n"); 174 175 for (next = buf; next < lim; next += msg->sadb_msg_len * 176 PFKEYV2_CHUNK) { 177 msg = (struct sadb_msg *)next; 178 if (msg->sadb_msg_len == 0) 179 break; 180 p_pfkentry(msg); 181 } 182 free(buf); 183 buf = NULL; 184 } 185 #endif /* 0 */ 186 } 187 188 /* 189 * column widths; each followed by one space 190 * width of destination/gateway column 191 * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4 = 34 192 * strlen("aaaa:bbbb:cccc:dddd:eeee:ffff:gggg:hhhh") == 39 193 */ 194 #ifndef INET6 195 #define WID_DST(af) 18 /* width of destination column */ 196 #define WID_GW(af) 18 /* width of gateway column */ 197 #else 198 #define WID_DST(af) ((af) == AF_INET6 ? ((flags & RT_NFLAG) ? 39 : 18) : 18) 199 #define WID_GW(af) ((af) == AF_INET6 ? ((flags & RT_NFLAG) ? 30 : 18) : 18) 200 #endif 201 202 /* 203 * Print header for routing table columns. 204 */ 205 void 206 p_rthdr(int paf, int flags) 207 { 208 #ifndef SMALL 209 if (flags & RT_AFLAG) 210 printf("%-*.*s ", PLEN, PLEN, "Address"); 211 if (paf == PF_KEY) { 212 printf("%-18s %-5s %-18s %-5s %-5s %-22s\n", 213 "Source", "Port", "Destination", 214 "Port", "Proto", "SA(Address/Proto/Type/Direction)"); 215 return; 216 } 217 if (flags & RT_TFLAG) { 218 printf("%-*.*s %-*.*s %-6.6s %6.6s %8.8s %6.6s %7.7s" 219 " %s\n", WID_DST(paf), WID_DST(paf), "Destination", 220 WID_GW(paf), WID_GW(paf), "Gateway", 221 "Flags", "Refs", "Use", "Mtu", "Tag", "Interface"); 222 return; 223 } 224 #endif 225 #ifndef SMALL 226 printf("%-*.*s %-*.*s %-6.6s %6.6s %8.8s %6.6s %s\n", 227 WID_DST(paf), WID_DST(paf), "Destination", 228 WID_GW(paf), WID_GW(paf), "Gateway", 229 "Flags", "Refs", "Use", "Mtu", "Interface"); 230 #else 231 printf("%-*.*s %-*.*s %-6.6s\n", 232 WID_DST(paf), WID_DST(paf), "Destination", 233 WID_GW(paf), WID_GW(paf), "Gateway", 234 "Flags"); 235 #endif 236 } 237 238 static void 239 get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info) 240 { 241 int i; 242 243 for (i = 0; i < RTAX_MAX; i++) { 244 if (addrs & (1 << i)) { 245 rti_info[i] = sa; 246 sa = (struct sockaddr *)((char *)(sa) + 247 RT_ROUNDUP(sa->sa_len)); 248 } else 249 rti_info[i] = NULL; 250 } 251 } 252 253 /* 254 * Print a routing table entry. 255 */ 256 static void 257 p_rtentry(struct rt_msghdr *rtm, int flags, int interesting) 258 { 259 static int old_af = -1; 260 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 261 struct sockaddr *mask, *rti_info[RTAX_MAX]; 262 #ifndef SMALL 263 char ifbuf[IF_NAMESIZE]; 264 #endif 265 266 if ((flags & RT_LFLAG) && (rtm->rtm_flags & RTF_LLINFO)) 267 return; 268 269 if (old_af != sa->sa_family) { 270 old_af = sa->sa_family; 271 p_family(sa->sa_family); 272 p_rthdr(sa->sa_family, flags); 273 } 274 get_rtaddrs(rtm->rtm_addrs, sa, rti_info); 275 276 mask = rti_info[RTAX_NETMASK]; 277 if ((sa = rti_info[RTAX_DST]) == NULL) 278 return; 279 280 p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family), flags); 281 p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST, 282 WID_GW(sa->sa_family), flags); 283 p_flags(rtm->rtm_flags & interesting); 284 #if 0 /* XXX-elad */ 285 printf("%6d %8"PRId64" ", (int)rtm->rtm_rmx.rmx_refcnt, 286 rtm->rtm_rmx.rmx_pksent); 287 #else 288 printf("%6s %8s ", "-", "-"); 289 #endif 290 #ifndef SMALL 291 if (rtm->rtm_rmx.rmx_mtu) 292 printf("%6"PRId64, rtm->rtm_rmx.rmx_mtu); 293 else 294 printf("%6s", "-"); 295 putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' '); 296 if (flags & RT_TFLAG) 297 p_tag(rti_info[RTAX_TAG]); 298 printf(" %.16s", if_indextoname(rtm->rtm_index, ifbuf)); 299 putchar('\n'); 300 if (flags & RT_VFLAG) 301 p_rtrmx(&rtm->rtm_rmx); 302 #endif 303 } 304 305 /* 306 * Print address family header before a section of the routing table. 307 */ 308 void 309 p_family(int paf) 310 { 311 const char *afname; 312 313 switch (paf) { 314 case AF_INET: 315 afname = "Internet"; 316 break; 317 #ifdef INET6 318 case AF_INET6: 319 afname = "Internet6"; 320 break; 321 #endif 322 case PF_KEY: 323 afname = "Encap"; 324 break; 325 case AF_APPLETALK: 326 afname = "AppleTalk"; 327 break; 328 #ifndef SMALL 329 case AF_MPLS: 330 afname = "MPLS"; 331 break; 332 #endif 333 default: 334 afname = NULL; 335 break; 336 } 337 if (afname) 338 printf("\n%s:\n", afname); 339 else 340 printf("\nProtocol Family %d:\n", paf); 341 } 342 343 void 344 p_sockaddr(const struct sockaddr *sa, const struct sockaddr *mask, int rflags, 345 int width, int flags) 346 { 347 char *cp; 348 349 switch (sa->sa_family) { 350 #ifdef INET6 351 case AF_INET6: 352 { 353 struct sockaddr_in6 sa6 = *(const struct sockaddr_in6 *)sa; 354 355 inet6_getscopeid(&sa6, INET6_IS_ADDR_LINKLOCAL| 356 INET6_IS_ADDR_MC_LINKLOCAL); 357 if (rflags & RTF_HOST) 358 cp = routename((const struct sockaddr *)&sa6, flags); 359 else 360 cp = netname((const struct sockaddr *)&sa6, mask, flags); 361 break; 362 } 363 #endif 364 default: 365 if ((rflags & RTF_HOST) || mask == NULL) 366 cp = routename(sa, flags); 367 else 368 cp = netname(sa, mask, flags); 369 break; 370 } 371 if (width < 0) 372 printf("%s", cp); 373 else { 374 if (flags & RT_NFLAG) 375 printf("%-*s ", width, cp); 376 else 377 printf("%-*.*s ", width, width, cp); 378 } 379 } 380 381 void 382 p_flags(int f) 383 { 384 char name[33], *flags; 385 const struct bits *p = bits; 386 387 for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++) 388 if (p->b_mask & f) 389 *flags++ = p->b_val; 390 *flags = '\0'; 391 printf("%-6.6s ", name); 392 } 393 394 #ifndef SMALL 395 void 396 p_rtrmx(const struct rt_metrics *rmx) 397 { 398 printf("\texpire %10"PRId64"%c recvpipe %10"PRIu64"%c " 399 "sendpipe %10"PRIu64"%c\n", 400 (int64_t)rmx->rmx_expire, 401 (rmx->rmx_locks & RTV_EXPIRE) ? 'L' : ' ', rmx->rmx_recvpipe, 402 (rmx->rmx_locks & RTV_RPIPE) ? 'L' : ' ', rmx->rmx_sendpipe, 403 (rmx->rmx_locks & RTV_SPIPE) ? 'L' : ' '); 404 printf("\tssthresh %10"PRIu64"%c rtt %10"PRIu64"%c " 405 "rttvar %10"PRIu64"%c\n", rmx->rmx_ssthresh, 406 (rmx->rmx_locks & RTV_SSTHRESH) ? 'L' : ' ', 407 rmx->rmx_rtt, (rmx->rmx_locks & RTV_RTT) ? 'L' : ' ', 408 rmx->rmx_rttvar, (rmx->rmx_locks & RTV_RTTVAR) ? 'L' : ' '); 409 printf("\thopcount %10"PRIu64"%c\n", 410 rmx->rmx_hopcount, (rmx->rmx_locks & RTV_HOPCOUNT) ? 'L' : ' '); 411 } 412 413 static void 414 p_tag(const struct sockaddr *sa) 415 { 416 char *line; 417 418 if (sa == NULL || sa->sa_family != AF_MPLS) { 419 printf("%7s", "-"); 420 return; 421 } 422 line = mpls_ntoa(sa); 423 if (strlen(line) < 7) 424 printf("%7s", line); 425 else 426 printf("%s", line); 427 } 428 #endif 429 430 static char line[MAXHOSTNAMELEN]; 431 static char domain[MAXHOSTNAMELEN]; 432 433 char * 434 routename(const struct sockaddr *sa, int flags) 435 { 436 char *cp = NULL; 437 static int first = 1; 438 439 if (first) { 440 first = 0; 441 if (gethostname(domain, sizeof(domain)) == 0 && 442 (cp = strchr(domain, '.'))) 443 (void)strlcpy(domain, cp + 1, sizeof(domain)); 444 else 445 domain[0] = '\0'; 446 cp = NULL; 447 } 448 449 if (sa->sa_len == 0) { 450 (void)strlcpy(line, "default", sizeof(line)); 451 return (line); 452 } 453 454 switch (sa->sa_family) { 455 case AF_INET: 456 return routename4( 457 ((const struct sockaddr_in *)sa)->sin_addr.s_addr, 458 flags); 459 #ifdef INET6 460 case AF_INET6: 461 { 462 struct sockaddr_in6 sin6; 463 464 memset(&sin6, 0, sizeof(sin6)); 465 memcpy(&sin6, sa, sa->sa_len); 466 sin6.sin6_len = sizeof(struct sockaddr_in6); 467 sin6.sin6_family = AF_INET6; 468 if (sa->sa_len == sizeof(struct sockaddr_in6)) 469 inet6_getscopeid(&sin6, INET6_IS_ADDR_LINKLOCAL| 470 INET6_IS_ADDR_MC_LINKLOCAL); 471 return routename6(&sin6, flags); 472 } 473 #endif 474 case AF_LINK: 475 return link_print(sa); 476 477 #ifndef SMALL 478 case AF_MPLS: 479 return mpls_ntoa(sa); 480 481 case AF_APPLETALK: 482 (void)snprintf(line, sizeof(line), "atalk %d.%d", 483 ((const struct sockaddr_at *)sa)->sat_addr.s_net, 484 ((const struct sockaddr_at *)sa)->sat_addr.s_node); 485 break; 486 #endif 487 488 #if 0 /* XXX-elad */ 489 case AF_UNSPEC: 490 if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) { 491 static char name[RTLABEL_LEN]; 492 struct sockaddr_rtlabel *sr; 493 494 sr = (struct sockaddr_rtlabel *)sa; 495 strlcpy(name, sr->sr_label, sizeof(name)); 496 return (name); 497 } 498 /* FALLTHROUGH */ 499 #endif 500 default: 501 (void)snprintf(line, sizeof(line), "(%d) %s", 502 sa->sa_family, any_ntoa(sa)); 503 break; 504 } 505 return (line); 506 } 507 508 char * 509 routename4(in_addr_t in, int flags) 510 { 511 const char *cp = NULL; 512 struct in_addr ina; 513 struct hostent *hp; 514 515 if (in == INADDR_ANY) 516 cp = "default"; 517 if (!cp && (flags & RT_NFLAG) == 0) { 518 if ((hp = gethostbyaddr((char *)&in, 519 sizeof(in), AF_INET)) != NULL) { 520 char *p; 521 if ((p = strchr(hp->h_name, '.')) && 522 !strcmp(p + 1, domain)) 523 *p = '\0'; 524 cp = hp->h_name; 525 } 526 } 527 ina.s_addr = in; 528 strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line)); 529 530 return (line); 531 } 532 533 #ifdef INET6 534 char * 535 routename6(const struct sockaddr_in6 *sin6, int flags) 536 { 537 int niflags = 0; 538 539 if ((flags & RT_NFLAG)) 540 niflags |= NI_NUMERICHOST; 541 else 542 niflags |= NI_NOFQDN; 543 544 if (getnameinfo((const struct sockaddr *)sin6, sin6->sin6_len, 545 line, sizeof(line), NULL, 0, niflags) != 0) 546 strncpy(line, "invalid", sizeof(line)); 547 548 return (line); 549 } 550 #endif 551 552 /* 553 * Return the name of the network whose address is given. 554 * The address is assumed to be that of a net or subnet, not a host. 555 */ 556 char * 557 netname4(const struct sockaddr_in* sa4, const struct sockaddr_in *mask, int flags) 558 { 559 const char *cp = NULL; 560 struct netent *np = NULL; 561 int mbits; 562 in_addr_t in = sa4->sin_addr.s_addr; 563 564 if (mask) { 565 in_addr_t m = mask->sin_addr.s_addr ; 566 m = ntohl(m); 567 mbits = m ? 33 - ffs(m) : 0; 568 } else 569 mbits = 0; 570 571 in = ntohl(in); 572 if (in == INADDR_ANY && !mbits) 573 cp = "default"; 574 else if (!(flags & RT_NFLAG) && in != INADDR_ANY) { 575 if ((np = getnetbyaddr(in, AF_INET)) != NULL) 576 cp = np->n_name; 577 } 578 if (cp) 579 strlcpy(line, cp, sizeof(line)); 580 #define C(x) ((x) & 0xff) 581 else if (mbits < 9) 582 snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits); 583 else if (mbits < 17) 584 snprintf(line, sizeof(line), "%u.%u/%d", 585 C(in >> 24) , C(in >> 16), mbits); 586 else if (mbits < 25) 587 snprintf(line, sizeof(line), "%u.%u.%u/%d", 588 C(in >> 24), C(in >> 16), C(in >> 8), mbits); 589 else 590 snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24), 591 C(in >> 16), C(in >> 8), C(in), mbits); 592 #undef C 593 return line; 594 } 595 596 #ifdef INET6 597 char * 598 netname6(const struct sockaddr_in6 *sa6, const struct sockaddr_in6 *mask, int flags) 599 { 600 struct sockaddr_in6 sin6; 601 const u_char *p; 602 int masklen, final = 0, illegal = 0; 603 int i, lim, flag, error; 604 char hbuf[NI_MAXHOST]; 605 606 sin6 = *sa6; 607 608 flag = 0; 609 masklen = 0; 610 if (mask) { 611 lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr); 612 if (lim < 0) 613 lim = 0; 614 else if (lim > (int)sizeof(struct in6_addr)) 615 lim = sizeof(struct in6_addr); 616 for (p = (const u_char *)&mask->sin6_addr, i = 0; i < lim; p++) { 617 if (final && *p) { 618 illegal++; 619 sin6.sin6_addr.s6_addr[i++] = 0x00; 620 continue; 621 } 622 623 switch (*p & 0xff) { 624 case 0xff: 625 masklen += 8; 626 break; 627 case 0xfe: 628 masklen += 7; 629 final++; 630 break; 631 case 0xfc: 632 masklen += 6; 633 final++; 634 break; 635 case 0xf8: 636 masklen += 5; 637 final++; 638 break; 639 case 0xf0: 640 masklen += 4; 641 final++; 642 break; 643 case 0xe0: 644 masklen += 3; 645 final++; 646 break; 647 case 0xc0: 648 masklen += 2; 649 final++; 650 break; 651 case 0x80: 652 masklen += 1; 653 final++; 654 break; 655 case 0x00: 656 final++; 657 break; 658 default: 659 final++; 660 illegal++; 661 break; 662 } 663 664 if (!illegal) 665 sin6.sin6_addr.s6_addr[i++] &= *p; 666 else 667 sin6.sin6_addr.s6_addr[i++] = 0x00; 668 } 669 while (i < (int)sizeof(struct in6_addr)) 670 sin6.sin6_addr.s6_addr[i++] = 0x00; 671 } else 672 masklen = 128; 673 674 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) { 675 snprintf(line, sizeof(line), "default"); 676 return (line); 677 } 678 679 if (illegal) 680 warnx("illegal prefixlen"); 681 682 if (flags & RT_NFLAG) 683 flag |= NI_NUMERICHOST; 684 error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 685 hbuf, sizeof(hbuf), NULL, 0, flag); 686 if (error) 687 snprintf(hbuf, sizeof(hbuf), "invalid"); 688 689 snprintf(line, sizeof(line), "%s/%d", hbuf, masklen); 690 return (line); 691 } 692 #endif 693 694 /* 695 * Return the name of the network whose address is given. 696 * The address is assumed to be that of a net or subnet, not a host. 697 */ 698 char * 699 netname(const struct sockaddr *sa, const struct sockaddr *mask, int flags) 700 { 701 switch (sa->sa_family) { 702 703 case AF_INET: 704 return netname4((const struct sockaddr_in *)sa, 705 (const struct sockaddr_in *)mask, flags); 706 #ifdef INET6 707 case AF_INET6: 708 return netname6((const struct sockaddr_in6 *)sa, 709 (const struct sockaddr_in6 *)mask, flags); 710 #endif 711 case AF_LINK: 712 return link_print(sa); 713 default: 714 snprintf(line, sizeof(line), "af %d: %s", 715 sa->sa_family, any_ntoa(sa)); 716 break; 717 } 718 return (line); 719 } 720 721 static const char hexlist[] = "0123456789abcdef"; 722 723 char * 724 any_ntoa(const struct sockaddr *sa) 725 { 726 static char obuf[240]; 727 const char *in = sa->sa_data; 728 char *out = obuf; 729 int len = sa->sa_len - offsetof(struct sockaddr, sa_data); 730 731 *out++ = 'Q'; 732 do { 733 *out++ = hexlist[(*in >> 4) & 15]; 734 *out++ = hexlist[(*in++) & 15]; 735 *out++ = '.'; 736 } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]); 737 out[-1] = '\0'; 738 return (obuf); 739 } 740 741 static char * 742 link_print(const struct sockaddr *sa) 743 { 744 const struct sockaddr_dl *sdl = (const struct sockaddr_dl *)sa; 745 const u_char *lla = (const u_char *)sdl->sdl_data + sdl->sdl_nlen; 746 747 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 748 sdl->sdl_slen == 0) { 749 (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index); 750 return (line); 751 } 752 switch (sdl->sdl_type) { 753 case IFT_ETHER: 754 case IFT_CARP: 755 return ether_ntoa((const struct ether_addr *)lla); 756 default: 757 return link_ntoa(sdl); 758 } 759 } 760 761 #ifndef SMALL 762 char * 763 mpls_ntoa(const struct sockaddr *sa) 764 { 765 static char obuf[16]; 766 size_t olen; 767 const union mpls_shim *pms; 768 union mpls_shim ms; 769 int psize = sizeof(struct sockaddr_mpls); 770 771 pms = &((const struct sockaddr_mpls*)sa)->smpls_addr; 772 ms.s_addr = ntohl(pms->s_addr); 773 774 snprintf(obuf, sizeof(obuf), "%u", ms.shim.label); 775 776 while(psize < sa->sa_len) { 777 pms++; 778 ms.s_addr = ntohl(pms->s_addr); 779 olen = strlen(obuf); 780 snprintf(obuf + olen, sizeof(obuf) - olen, ",%u", 781 ms.shim.label); 782 psize+=sizeof(ms); 783 } 784 return obuf; 785 } 786 #endif 787 788 void 789 p_addr(const struct sockaddr *sa, const struct sockaddr *mask, int rflags, int flags) 790 { 791 p_sockaddr(sa, mask, rflags, WID_DST(sa->sa_family), flags); 792 } 793 794 void 795 p_gwaddr(const struct sockaddr *sa, int gwaf, int flags) 796 { 797 p_sockaddr(sa, 0, RTF_HOST, WID_GW(gwaf), flags); 798 } 799