1 /* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)route.c 8.6 (Berkeley) 4/28/95 30 * $FreeBSD: src/usr.bin/netstat/route.c,v 1.41.2.14 2002/07/17 02:22:22 kbyanc Exp $ 31 */ 32 33 #include <sys/kinfo.h> 34 #include <sys/param.h> 35 #include <sys/socket.h> 36 #include <sys/time.h> 37 38 #include <net/ethernet.h> 39 #include <net/if.h> 40 #include <net/if_var.h> 41 #include <net/if_dl.h> 42 #include <net/if_types.h> 43 #include <net/route.h> 44 45 #include <netinet/in.h> 46 #include <netgraph/socket/ng_socket.h> 47 48 #include <netproto/mpls/mpls.h> 49 50 #include <sys/sysctl.h> 51 52 #include <arpa/inet.h> 53 #include <libutil.h> 54 #include <netdb.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <unistd.h> 59 #include <err.h> 60 #include <time.h> 61 #include <kinfo.h> 62 #include "netstat.h" 63 64 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 65 66 /* 67 * Definitions for showing gateway flags. 68 */ 69 struct bits { 70 u_long b_mask; 71 char b_val; 72 } 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_XRESOLVE, 'X' }, 82 { RTF_LLINFO, 'L' }, 83 { RTF_STATIC, 'S' }, 84 { RTF_PROTO1, '1' }, 85 { RTF_PROTO2, '2' }, 86 { RTF_WASCLONED,'W' }, 87 { RTF_PRCLONING,'c' }, 88 { RTF_PROTO3, '3' }, 89 { RTF_BLACKHOLE,'B' }, 90 { RTF_BROADCAST,'b' }, 91 { RTF_MPLSOPS, 'm' }, 92 { 0, 0 } 93 }; 94 95 typedef union { 96 long dummy; /* Helps align structure. */ 97 struct sockaddr u_sa; 98 u_short u_data[128]; 99 } sa_u; 100 101 static sa_u pt_u; 102 103 int do_rtent = 0; 104 struct rtentry rtentry; 105 struct radix_node rnode; 106 struct radix_mask rmask; 107 struct radix_node_head *rt_tables[AF_MAX+1]; 108 109 int NewTree = 0; 110 111 static struct sockaddr *kgetsa (struct sockaddr *); 112 static void size_cols (int ef, struct radix_node *rn); 113 static void size_cols_tree (struct radix_node *rn); 114 static void size_cols_rtentry (struct rtentry *rt); 115 static void p_tree (struct radix_node *); 116 static void p_rtnode (void); 117 static void ntreestuff (void); 118 static void np_rtentry (struct rt_msghdr *); 119 static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 120 static const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, 121 int flags); 122 static void p_flags (int, const char *); 123 static const char *fmt_flags(int f); 124 static void p_rtentry (struct rtentry *); 125 static u_long forgemask (u_long); 126 static void domask (char *, u_long, u_long); 127 static const char *labelops(struct rtentry *); 128 129 /* 130 * Print routing tables. 131 */ 132 void 133 routepr(u_long rtree) 134 { 135 struct radix_node_head *rnh, head; 136 int i; 137 138 printf("Routing tables\n"); 139 140 if (Aflag == 0 && NewTree) { 141 ntreestuff(); 142 } else { 143 if (rtree == 0) { 144 printf("rt_tables: symbol not in namelist\n"); 145 return; 146 } 147 if (cpuflag >= 0) { 148 /* 149 * Severe hack. 150 */ 151 rtree += cpuflag * (AF_MAX + 1) * sizeof(void *); 152 } 153 if (kget(rtree, rt_tables) != 0) 154 return; 155 for (i = 0; i <= AF_MAX; i++) { 156 if ((rnh = rt_tables[i]) == NULL) 157 continue; 158 if (kget(rnh, head) != 0) 159 continue; 160 if (i == AF_UNSPEC) { 161 if (Aflag && af == 0) { 162 printf("Netmasks:\n"); 163 p_tree(head.rnh_treetop); 164 } 165 } else if (af == AF_UNSPEC || af == i) { 166 size_cols(i, head.rnh_treetop); 167 pr_family(i); 168 do_rtent = 1; 169 pr_rthdr(i); 170 p_tree(head.rnh_treetop); 171 } 172 } 173 } 174 } 175 176 /* 177 * Print address family header before a section of the routing table. 178 */ 179 void 180 pr_family(int af1) 181 { 182 const char *afname; 183 184 switch (af1) { 185 case AF_INET: 186 afname = "Internet"; 187 break; 188 #ifdef INET6 189 case AF_INET6: 190 afname = "Internet6"; 191 break; 192 #endif /*INET6*/ 193 case AF_ISO: 194 afname = "ISO"; 195 break; 196 case AF_CCITT: 197 afname = "X.25"; 198 break; 199 case AF_NETGRAPH: 200 afname = "Netgraph"; 201 break; 202 case AF_MPLS: 203 afname = "MPLS"; 204 break; 205 default: 206 afname = NULL; 207 break; 208 } 209 if (afname) 210 printf("\n%s:\n", afname); 211 else 212 printf("\nProtocol Family %d:\n", af1); 213 } 214 215 /* column widths; each followed by one space */ 216 #ifndef INET6 217 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 218 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 219 #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 220 #else 221 #define WID_DST_DEFAULT(af) \ 222 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 223 #define WID_GW_DEFAULT(af) \ 224 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 225 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 :6)) 226 #endif /*INET6*/ 227 228 static int wid_dst; 229 static int wid_gw; 230 static int wid_flags; 231 static int wid_refs; 232 static int wid_use; 233 static int wid_mtu; 234 static int wid_if; 235 static int wid_expire; 236 static int wid_mplslops; 237 static int wid_msl; 238 static int wid_iwmax; 239 static int wid_iw; 240 241 static void 242 size_cols(int ef, struct radix_node *rn) 243 { 244 wid_dst = WID_DST_DEFAULT(ef); 245 wid_gw = WID_GW_DEFAULT(ef); 246 wid_flags = 6; 247 wid_refs = 6; 248 wid_use = 8; 249 wid_mtu = 6; 250 wid_if = WID_IF_DEFAULT(ef); 251 wid_expire = 6; 252 wid_mplslops = 7; 253 wid_msl = 7; 254 wid_iwmax = 5; 255 wid_iw = 2; 256 257 if (Wflag) 258 size_cols_tree(rn); 259 } 260 261 static void 262 size_cols_tree(struct radix_node *rn) 263 { 264 again: 265 if (kget(rn, rnode) != 0) 266 return; 267 if (!(rnode.rn_flags & RNF_ACTIVE)) 268 return; 269 if (rnode.rn_bit < 0) { 270 if ((rnode.rn_flags & RNF_ROOT) == 0) { 271 if (kget(rn, rtentry) != 0) 272 return; 273 size_cols_rtentry(&rtentry); 274 } 275 if ((rn = rnode.rn_dupedkey)) 276 goto again; 277 } else { 278 rn = rnode.rn_right; 279 size_cols_tree(rnode.rn_left); 280 size_cols_tree(rn); 281 } 282 } 283 284 static void 285 size_cols_rtentry(struct rtentry *rt) 286 { 287 static struct ifnet ifnet, *lastif; 288 struct rtentry parent; 289 static char buffer[100]; 290 const char *bp; 291 struct sockaddr *sa; 292 sa_u addr, mask; 293 int len; 294 295 /* 296 * Don't print protocol-cloned routes unless -a. 297 */ 298 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 299 if (kget(rt->rt_parent, parent) != 0) 300 return; 301 if (parent.rt_flags & RTF_PRCLONING) 302 return; 303 } 304 305 bzero(&addr, sizeof(addr)); 306 if ((sa = kgetsa(rt_key(rt)))) 307 bcopy(sa, &addr, sa->sa_len); 308 bzero(&mask, sizeof(mask)); 309 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 310 bcopy(sa, &mask, sa->sa_len); 311 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 312 len = strlen(bp); 313 wid_dst = MAX(len, wid_dst); 314 315 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 316 len = strlen(bp); 317 wid_gw = MAX(len, wid_gw); 318 319 bp = fmt_flags(rt->rt_flags); 320 len = strlen(bp); 321 wid_flags = MAX(len, wid_flags); 322 323 if (addr.u_sa.sa_family == AF_INET || Wflag) { 324 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); 325 wid_refs = MAX(len, wid_refs); 326 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 327 wid_use = MAX(len, wid_use); 328 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 329 len = snprintf(buffer, sizeof(buffer), 330 "%lu", rt->rt_rmx.rmx_mtu); 331 wid_mtu = MAX(len, wid_mtu); 332 } 333 } 334 if (rt->rt_ifp) { 335 if (rt->rt_ifp != lastif) { 336 if (kget(rt->rt_ifp, ifnet) == 0) 337 len = strlen(ifnet.if_xname); 338 else 339 len = strlen("---"); 340 lastif = rt->rt_ifp; 341 wid_if = MAX(len, wid_if); 342 } 343 if (rt->rt_rmx.rmx_expire) { 344 struct timespec sp; 345 int expire_time; 346 347 clock_gettime(CLOCK_MONOTONIC, &sp); 348 349 expire_time = (int)(rt->rt_rmx.rmx_expire - sp.tv_sec); 350 351 if (expire_time > 0) { 352 snprintf(buffer, sizeof(buffer), "%d", 353 (int)expire_time); 354 wid_expire = MAX(len, wid_expire); 355 } 356 } 357 } 358 if (Wflag) { 359 if (rt->rt_shim[0] != NULL) { 360 len = strlen(labelops(rt)); 361 wid_mplslops = MAX(len, wid_mplslops); 362 } 363 364 if (rt->rt_rmx.rmx_msl) { 365 len = snprintf(buffer, sizeof(buffer), 366 "%lu", rt->rt_rmx.rmx_msl); 367 wid_msl = MAX(len, wid_msl); 368 } 369 if (rt->rt_rmx.rmx_iwmaxsegs) { 370 len = snprintf(buffer, sizeof(buffer), 371 "%lu", rt->rt_rmx.rmx_iwmaxsegs); 372 wid_iwmax = MAX(len, wid_iwmax); 373 } 374 if (rt->rt_rmx.rmx_iwcapsegs) { 375 len = snprintf(buffer, sizeof(buffer), 376 "%lu", rt->rt_rmx.rmx_iwcapsegs); 377 wid_iw = MAX(len, wid_iw); 378 } 379 } 380 } 381 382 383 /* 384 * Print header for routing table columns. 385 */ 386 void 387 pr_rthdr(int af1) 388 { 389 390 if (Aflag) 391 printf("%-8.8s ","Address"); 392 if (af1 == AF_INET || Wflag) { 393 if (Wflag) { 394 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s " 395 "%*s %-*s%*s %*s %*s\n", 396 wid_dst, wid_dst, "Destination", 397 wid_gw, wid_gw, "Gateway", 398 wid_flags, wid_flags, "Flags", 399 wid_refs, wid_refs, "Refs", 400 wid_use, wid_use, "Use", 401 wid_mtu, wid_mtu, "Mtu", 402 wid_if, wid_if, "Netif", 403 wid_expire, "Expire", 404 wid_mplslops, "Labelops", 405 wid_msl, "Msl", 406 wid_iwmax, "IWmax", 407 wid_iw, "IW"); 408 } else { 409 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 410 wid_dst, wid_dst, "Destination", 411 wid_gw, wid_gw, "Gateway", 412 wid_flags, wid_flags, "Flags", 413 wid_refs, wid_refs, "Refs", 414 wid_use, wid_use, "Use", 415 wid_if, wid_if, "Netif", 416 wid_expire, "Expire"); 417 } 418 } else { 419 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 420 wid_dst, wid_dst, "Destination", 421 wid_gw, wid_gw, "Gateway", 422 wid_flags, wid_flags, "Flags", 423 wid_if, wid_if, "Netif", 424 wid_expire, "Expire"); 425 } 426 } 427 428 static struct sockaddr * 429 kgetsa(struct sockaddr *dst) 430 { 431 432 if (kget(dst, pt_u.u_sa) != 0) 433 return (NULL); 434 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 435 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 436 return (&pt_u.u_sa); 437 } 438 439 static void 440 p_tree(struct radix_node *rn) 441 { 442 443 again: 444 if (kget(rn, rnode) != 0) 445 return; 446 if (!(rnode.rn_flags & RNF_ACTIVE)) 447 return; 448 if (rnode.rn_bit < 0) { 449 if (Aflag) 450 printf("%-8.8lx ", (u_long)rn); 451 if (rnode.rn_flags & RNF_ROOT) { 452 if (Aflag) 453 printf("(root node)%s", 454 rnode.rn_dupedkey ? " =>\n" : "\n"); 455 } else if (do_rtent) { 456 if (kget(rn, rtentry) == 0) { 457 p_rtentry(&rtentry); 458 if (Aflag) 459 p_rtnode(); 460 } 461 } else { 462 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 463 NULL, 0, 44); 464 putchar('\n'); 465 } 466 if ((rn = rnode.rn_dupedkey)) 467 goto again; 468 } else { 469 if (Aflag && do_rtent) { 470 printf("%-8.8lx ", (u_long)rn); 471 p_rtnode(); 472 } 473 rn = rnode.rn_right; 474 p_tree(rnode.rn_left); 475 p_tree(rn); 476 } 477 } 478 479 char nbuf[20]; 480 481 static void 482 p_rtnode(void) 483 { 484 struct radix_mask *rm = rnode.rn_mklist; 485 486 if (rnode.rn_bit < 0) { 487 if (rnode.rn_mask) { 488 printf("\t mask "); 489 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 490 NULL, 0, -1); 491 } else if (rm == NULL) 492 return; 493 } else { 494 sprintf(nbuf, "(%d)", rnode.rn_bit); 495 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 496 } 497 while (rm) { 498 if (kget(rm, rmask) != 0) 499 break; 500 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 501 printf(" mk = %8.8lx {(%d),%s", 502 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 503 if (rmask.rm_flags & RNF_NORMAL) { 504 struct radix_node rnode_aux; 505 printf(" <normal>, "); 506 if (kget(rmask.rm_leaf, rnode_aux) == 0) 507 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 508 NULL, 0, -1); 509 else 510 p_sockaddr(NULL, NULL, 0, -1); 511 } else 512 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 513 NULL, 0, -1); 514 putchar('}'); 515 if ((rm = rmask.rm_next)) 516 printf(" ->"); 517 } 518 putchar('\n'); 519 } 520 521 static void 522 ntreestuff(void) 523 { 524 size_t needed; 525 int mib[7]; 526 int miblen; 527 char *buf, *next, *lim; 528 struct rt_msghdr *rtm; 529 530 mib[0] = CTL_NET; 531 mib[1] = PF_ROUTE; 532 mib[2] = 0; 533 mib[3] = 0; 534 mib[4] = NET_RT_DUMP; 535 mib[5] = 0; 536 if (cpuflag >= 0) { 537 mib[6] = cpuflag; 538 miblen = 7; 539 } else { 540 miblen = 6; 541 } 542 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0) { 543 err(1, "sysctl: net.route.0.0.dump estimate"); 544 } 545 546 if ((buf = malloc(needed)) == NULL) { 547 err(2, "malloc(%lu)", (unsigned long)needed); 548 } 549 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0) { 550 err(1, "sysctl: net.route.0.0.dump"); 551 } 552 lim = buf + needed; 553 for (next = buf; next < lim; next += rtm->rtm_msglen) { 554 rtm = (struct rt_msghdr *)next; 555 np_rtentry(rtm); 556 } 557 } 558 559 static void 560 np_rtentry(struct rt_msghdr *rtm) 561 { 562 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 563 #ifdef notdef 564 static int masks_done, banner_printed; 565 #endif 566 static int old_af; 567 int af1 = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 568 569 #ifdef notdef 570 /* for the moment, netmasks are skipped over */ 571 if (!banner_printed) { 572 printf("Netmasks:\n"); 573 banner_printed = 1; 574 } 575 if (masks_done == 0) { 576 if (rtm->rtm_addrs != RTA_DST ) { 577 masks_done = 1; 578 af1 = sa->sa_family; 579 } 580 } else 581 #endif 582 af1 = sa->sa_family; 583 if (af1 != old_af) { 584 pr_family(af1); 585 old_af = af1; 586 } 587 if (rtm->rtm_addrs == RTA_DST) 588 p_sockaddr(sa, NULL, 0, 36); 589 else { 590 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 591 sa = (struct sockaddr *)(RT_ROUNDUP(sa->sa_len) + (char *)sa); 592 p_sockaddr(sa, NULL, 0, 18); 593 } 594 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 595 putchar('\n'); 596 } 597 598 static void 599 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 600 { 601 const char *cp; 602 603 cp = fmt_sockaddr(sa, mask, flags); 604 605 if (width < 0 ) 606 printf("%s ", cp); 607 else { 608 if (numeric_addr) 609 printf("%-*s ", width, cp); 610 else 611 printf("%-*.*s ", width, width, cp); 612 } 613 } 614 615 static const char * 616 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 617 { 618 static char workbuf[128]; 619 const char *cp = workbuf; 620 621 if (sa == NULL) 622 return ("null"); 623 624 switch(sa->sa_family) { 625 case AF_INET: 626 { 627 struct sockaddr_in *sin = (struct sockaddr_in *)sa; 628 629 if ((sin->sin_addr.s_addr == INADDR_ANY) && 630 mask && 631 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 632 ==0L) 633 cp = "default" ; 634 else if (flags & RTF_HOST) 635 cp = routename(sin->sin_addr.s_addr); 636 else if (mask) 637 cp = netname(sin->sin_addr.s_addr, 638 ntohl(((struct sockaddr_in *)mask) 639 ->sin_addr.s_addr)); 640 else 641 cp = netname(sin->sin_addr.s_addr, 0L); 642 break; 643 } 644 645 #ifdef INET6 646 case AF_INET6: 647 { 648 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 649 struct in6_addr *in6 = &sa6->sin6_addr; 650 651 /* 652 * XXX: This is a special workaround for KAME kernels. 653 * sin6_scope_id field of SA should be set in the future. 654 */ 655 if (IN6_IS_ADDR_LINKLOCAL(in6) || 656 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 657 /* XXX: override is ok? */ 658 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 659 *(u_short *)&in6->s6_addr[2] = 0; 660 } 661 662 if (flags & RTF_HOST) 663 cp = routename6(sa6); 664 else if (mask) 665 cp = netname6(sa6, 666 &((struct sockaddr_in6 *)mask)->sin6_addr); 667 else { 668 cp = netname6(sa6, NULL); 669 } 670 break; 671 } 672 #endif /*INET6*/ 673 674 case AF_NETGRAPH: 675 { 676 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 677 break; 678 } 679 case AF_LINK: 680 { 681 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 682 683 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 684 sdl->sdl_slen == 0) 685 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 686 else 687 switch (sdl->sdl_type) { 688 689 case IFT_ETHER: 690 case IFT_L2VLAN: 691 case IFT_CARP: 692 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 693 cp = ether_ntoa((struct ether_addr *) 694 (sdl->sdl_data + sdl->sdl_nlen)); 695 break; 696 } 697 /* FALLTHROUGH */ 698 default: 699 cp = link_ntoa(sdl); 700 break; 701 } 702 break; 703 } 704 705 case AF_MPLS: 706 { 707 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; 708 709 (void) sprintf(workbuf, "%d", ntohl(smpls->smpls_label)); 710 break; 711 } 712 713 default: 714 { 715 u_char *s = (u_char *)sa->sa_data, *slim; 716 char *cq, *cqlim; 717 718 cq = workbuf; 719 slim = sa->sa_len + (u_char *) sa; 720 cqlim = cq + sizeof(workbuf) - 6; 721 cq += sprintf(cq, "(%d)", sa->sa_family); 722 while (s < slim && cq < cqlim) { 723 cq += sprintf(cq, " %02x", *s++); 724 if (s < slim) 725 cq += sprintf(cq, "%02x", *s++); 726 } 727 cp = workbuf; 728 } 729 } 730 731 return (cp); 732 } 733 734 static void 735 p_flags(int f, const char *format) 736 { 737 printf(format, fmt_flags(f)); 738 } 739 740 static const char * 741 fmt_flags(int f) 742 { 743 static char name[33]; 744 char *flags; 745 struct bits *p = bits; 746 747 for (flags = name; p->b_mask; p++) 748 if (p->b_mask & f) 749 *flags++ = p->b_val; 750 *flags = '\0'; 751 return (name); 752 } 753 754 static void 755 p_rtentry(struct rtentry *rt) 756 { 757 static struct ifnet ifnet, *lastif; 758 struct rtentry parent; 759 static char buffer[128]; 760 static char prettyname[128]; 761 struct sockaddr *sa; 762 sa_u addr, mask; 763 764 /* 765 * Don't print protocol-cloned routes unless -a or -A. 766 */ 767 if (rt->rt_flags & RTF_WASCLONED && !(aflag || Aflag)) { 768 if (kget(rt->rt_parent, parent) != 0) 769 return; 770 if (parent.rt_flags & RTF_PRCLONING) 771 return; 772 } 773 774 bzero(&addr, sizeof(addr)); 775 if ((sa = kgetsa(rt_key(rt)))) 776 bcopy(sa, &addr, sa->sa_len); 777 bzero(&mask, sizeof(mask)); 778 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 779 bcopy(sa, &mask, sa->sa_len); 780 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 781 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 782 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 783 p_flags(rt->rt_flags, buffer); 784 if (addr.u_sa.sa_family == AF_INET || Wflag) { 785 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 786 wid_use, rt->rt_use); 787 if (Wflag) { 788 if (rt->rt_rmx.rmx_mtu != 0) 789 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 790 else 791 printf("%*s ", wid_mtu, ""); 792 } 793 } 794 if (rt->rt_ifp) { 795 if (rt->rt_ifp != lastif) { 796 if (kget(rt->rt_ifp, ifnet) == 0) 797 strlcpy(prettyname, ifnet.if_xname, 798 sizeof(prettyname)); 799 else 800 strlcpy(prettyname, "---", sizeof(prettyname)); 801 lastif = rt->rt_ifp; 802 } 803 printf("%*.*s", wid_if, wid_if, prettyname); 804 if (rt->rt_rmx.rmx_expire) { 805 struct timespec sp; 806 int expire_time; 807 808 clock_gettime(CLOCK_MONOTONIC, &sp); 809 810 expire_time = (int)(rt->rt_rmx.rmx_expire - sp.tv_sec); 811 if (expire_time > 0) 812 printf(" %*d", wid_expire, (int)expire_time); 813 else 814 printf("%*s ", wid_expire, ""); 815 } else { 816 printf("%*s ", wid_expire, ""); 817 } 818 if (rt->rt_nodes[0].rn_dupedkey) 819 printf(" =>"); 820 } 821 if (Wflag) { 822 if (rt->rt_shim[0] != NULL) 823 printf(" %-*s", wid_mplslops, labelops(rt)); 824 else 825 printf(" %-*s", wid_mplslops, ""); 826 if (rt->rt_rmx.rmx_msl != 0) 827 printf(" %*lu", wid_msl, rt->rt_rmx.rmx_msl); 828 else 829 printf("%*s ", wid_msl, ""); 830 if (rt->rt_rmx.rmx_iwmaxsegs != 0) 831 printf(" %*lu", wid_iwmax, rt->rt_rmx.rmx_iwmaxsegs); 832 else 833 printf("%*s ", wid_iwmax, ""); 834 if (rt->rt_rmx.rmx_iwcapsegs != 0) 835 printf(" %*lu", wid_iw, rt->rt_rmx.rmx_iwcapsegs); 836 else 837 printf("%*s ", wid_iw, ""); 838 } 839 putchar('\n'); 840 } 841 842 char * 843 routename(u_long in) 844 { 845 char *cp; 846 static char line[MAXHOSTNAMELEN]; 847 struct hostent *hp; 848 849 cp = NULL; 850 if (!numeric_addr) { 851 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET); 852 if (hp) { 853 cp = hp->h_name; 854 trimdomain(cp, strlen(cp)); 855 } 856 } 857 if (cp) { 858 strncpy(line, cp, sizeof(line) - 1); 859 line[sizeof(line) - 1] = '\0'; 860 } else { 861 #define C(x) ((x) & 0xff) 862 in = ntohl(in); 863 sprintf(line, "%lu.%lu.%lu.%lu", 864 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 865 } 866 return (line); 867 } 868 869 static u_long 870 forgemask(u_long a) 871 { 872 u_long m; 873 874 if (IN_CLASSA(a)) 875 m = IN_CLASSA_NET; 876 else if (IN_CLASSB(a)) 877 m = IN_CLASSB_NET; 878 else 879 m = IN_CLASSC_NET; 880 return (m); 881 } 882 883 static void 884 domask(char *dst, u_long addr, u_long mask) 885 { 886 int b, i; 887 888 if (!mask || (forgemask(addr) == mask)) { 889 *dst = '\0'; 890 return; 891 } 892 i = 0; 893 for (b = 0; b < 32; b++) 894 if (mask & (1 << b)) { 895 int bb; 896 897 i = b; 898 for (bb = b+1; bb < 32; bb++) 899 if (!(mask & (1 << bb))) { 900 i = -1; /* noncontig */ 901 break; 902 } 903 break; 904 } 905 if (i == -1) 906 sprintf(dst, "&0x%lx", mask); 907 else 908 sprintf(dst, "/%d", 32-i); 909 } 910 911 /* 912 * Return the name of the network whose address is given. 913 * The address is assumed to be that of a net or subnet, not a host. 914 */ 915 char * 916 netname(u_long in, u_long mask) 917 { 918 char *cp = NULL; 919 static char line[MAXHOSTNAMELEN]; 920 struct netent *np = NULL; 921 u_long dmask; 922 u_long i; 923 924 #define NSHIFT(m) ( \ 925 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 926 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 927 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 928 0) 929 930 i = ntohl(in); 931 dmask = forgemask(i); 932 if (!numeric_addr && i) { 933 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 934 if (np == NULL && mask == 0) 935 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 936 if (np != NULL) { 937 cp = np->n_name; 938 trimdomain(cp, strlen(cp)); 939 } 940 } 941 #undef NSHIFT 942 if (cp != NULL) { 943 strncpy(line, cp, sizeof(line) - 1); 944 line[sizeof(line) - 1] = '\0'; 945 } else { 946 if (mask <= IN_CLASSA_NET && 947 (i & IN_CLASSA_HOST) == 0) { 948 sprintf(line, "%lu", C(i >> 24)); 949 } else if (mask <= IN_CLASSB_NET && 950 (i & IN_CLASSB_HOST) == 0) { 951 sprintf(line, "%lu.%lu", 952 C(i >> 24), C(i >> 16)); 953 } else if (mask <= IN_CLASSC_NET && 954 (i & IN_CLASSC_HOST) == 0) { 955 sprintf(line, "%lu.%lu.%lu", 956 C(i >> 24), C(i >> 16), C(i >> 8)); 957 } else { 958 sprintf(line, "%lu.%lu.%lu.%lu", 959 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 960 } 961 } 962 domask(line + strlen(line), i, mask); 963 return (line); 964 } 965 966 #ifdef INET6 967 const char * 968 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 969 { 970 static char line[MAXHOSTNAMELEN]; 971 u_char *p = (u_char *)mask; 972 u_char *lim; 973 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 974 975 if (mask) { 976 for (masklen = 0, lim = p + 16; p < lim; p++) { 977 switch (*p) { 978 case 0xff: 979 masklen += 8; 980 break; 981 case 0xfe: 982 masklen += 7; 983 break; 984 case 0xfc: 985 masklen += 6; 986 break; 987 case 0xf8: 988 masklen += 5; 989 break; 990 case 0xf0: 991 masklen += 4; 992 break; 993 case 0xe0: 994 masklen += 3; 995 break; 996 case 0xc0: 997 masklen += 2; 998 break; 999 case 0x80: 1000 masklen += 1; 1001 break; 1002 case 0x00: 1003 break; 1004 default: 1005 illegal ++; 1006 break; 1007 } 1008 } 1009 if (illegal) 1010 fprintf(stderr, "illegal prefixlen\n"); 1011 } 1012 else 1013 masklen = 128; 1014 1015 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 1016 return("default"); 1017 1018 if (numeric_addr) 1019 flag |= NI_NUMERICHOST; 1020 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 1021 NULL, 0, flag); 1022 1023 if (numeric_addr) 1024 sprintf(&line[strlen(line)], "/%d", masklen); 1025 1026 return line; 1027 } 1028 1029 char * 1030 routename6(struct sockaddr_in6 *sa6) 1031 { 1032 static char line[MAXHOSTNAMELEN]; 1033 int flag = NI_WITHSCOPEID; 1034 /* use local variable for safety */ 1035 struct sockaddr_in6 sa6_local; 1036 1037 sa6_local.sin6_family = AF_INET6; 1038 sa6_local.sin6_len = sizeof(sa6_local); 1039 sa6_local.sin6_addr = sa6->sin6_addr; 1040 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 1041 1042 if (numeric_addr) 1043 flag |= NI_NUMERICHOST; 1044 1045 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 1046 line, sizeof(line), NULL, 0, flag); 1047 1048 return line; 1049 } 1050 #endif /*INET6*/ 1051 1052 /* 1053 * Print routing statistics 1054 */ 1055 void 1056 rt_stats(void) 1057 { 1058 struct rtstatistics rts; 1059 int error = 0; 1060 1061 error = kinfo_get_net_rtstatistics(&rts); 1062 if (error) { 1063 printf("routing: could not retrieve statistics\n"); 1064 return; 1065 } 1066 printf("routing:\n"); 1067 1068 #define p(f, m) if (rts.f || sflag <= 1) \ 1069 printf(m, rts.f, plural(rts.f)) 1070 1071 p(rts_badredirect, "\t%lu bad routing redirect%s\n"); 1072 p(rts_dynamic, "\t%lu dynamically created route%s\n"); 1073 p(rts_newgateway, "\t%lu new gateway%s due to redirects\n"); 1074 p(rts_unreach, "\t%lu destination%s found unreachable\n"); 1075 p(rts_wildcard, "\t%lu use%s of a wildcard route\n"); 1076 #undef p 1077 } 1078 1079 static const char * 1080 labelops(struct rtentry *rt) 1081 { 1082 const char *lops[] = { "push", "pop", "swap", "pop all" }; 1083 static char buffer[100]; 1084 char *cp = buffer; 1085 struct sockaddr_mpls *smpls; 1086 int i; 1087 1088 for (i=0; i<MPLS_MAXLOPS; ++i) { 1089 1090 if (rt->rt_shim[i] == NULL) 1091 break; 1092 if (i>0) { 1093 cp += snprintf(cp, 1094 sizeof(buffer) - (cp - buffer), 1095 ", "); 1096 } 1097 smpls = (struct sockaddr_mpls *)kgetsa(rt->rt_shim[i]); 1098 if (smpls->smpls_op != MPLSLOP_POP && 1099 smpls->smpls_op != MPLSLOP_POPALL){ 1100 cp += snprintf(cp, 1101 sizeof(buffer) - (cp - buffer), 1102 "%s %d", 1103 lops[smpls->smpls_op - 1], 1104 ntohl(smpls->smpls_label)); 1105 } else { 1106 cp += snprintf(cp, 1107 sizeof(buffer) - (cp - buffer), 1108 "%s", 1109 lops[smpls->smpls_op - 1]); 1110 } 1111 } 1112 1113 return (buffer); 1114 } 1115