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 #define _KERNEL_STRUCTURES 34 #include <sys/kinfo.h> 35 #include <sys/param.h> 36 #include <sys/socket.h> 37 #include <sys/time.h> 38 39 #include <net/ethernet.h> 40 #include <net/if.h> 41 #include <net/if_var.h> /* for struct ifnet */ 42 #include <net/if_dl.h> 43 #include <net/if_types.h> 44 #include <net/route.h> 45 46 #include <netinet/in.h> 47 #include <netgraph/socket/ng_socket.h> 48 49 #include <netproto/mpls/mpls.h> 50 51 #include <sys/sysctl.h> 52 53 #include <arpa/inet.h> 54 #include <libutil.h> 55 #include <netdb.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include <unistd.h> 60 #include <err.h> 61 #include <time.h> 62 #include <kinfo.h> 63 #include "netstat.h" 64 65 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 66 #define constSA(x) ((const struct sockaddr *)(x)) 67 68 /* 69 * Definitions for showing gateway flags. 70 */ 71 struct bits { 72 u_long b_mask; 73 char b_val; 74 } bits[] = { 75 { RTF_UP, 'U' }, 76 { RTF_GATEWAY, 'G' }, 77 { RTF_HOST, 'H' }, 78 { RTF_REJECT, 'R' }, 79 { RTF_DYNAMIC, 'D' }, 80 { RTF_MODIFIED, 'M' }, 81 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 82 { RTF_CLONING, 'C' }, 83 { RTF_XRESOLVE, 'X' }, 84 { RTF_LLINFO, 'L' }, 85 { RTF_STATIC, 'S' }, 86 { RTF_PROTO1, '1' }, 87 { RTF_PROTO2, '2' }, 88 { RTF_WASCLONED,'W' }, 89 { RTF_PRCLONING,'c' }, 90 { RTF_PROTO3, '3' }, 91 { RTF_BLACKHOLE,'B' }, 92 { RTF_BROADCAST,'b' }, 93 { RTF_MPLSOPS, 'm' }, 94 { 0, 0 } 95 }; 96 97 typedef union { 98 long dummy; /* Helps align structure. */ 99 struct sockaddr u_sa; 100 u_short u_data[128]; 101 } sa_u; 102 103 static sa_u pt_u; 104 105 int do_rtent = 0; 106 struct rtentry rtentry; 107 struct radix_node rnode; 108 struct radix_mask rmask; 109 struct radix_node_head *rt_tables[AF_MAX+1]; 110 111 int NewTree = 0; 112 113 static struct sockaddr *kgetsa (const struct sockaddr *); 114 static void size_cols (int ef, struct radix_node *rn); 115 static void size_cols_tree (struct radix_node *rn); 116 static void size_cols_rtentry (struct rtentry *rt); 117 static void p_tree (struct radix_node *); 118 static void p_rtnode (void); 119 static void ntreestuff (void); 120 static void np_rtentry (struct rt_msghdr *); 121 static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 122 static const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, 123 int flags); 124 static void p_flags (int, const char *); 125 static const char *fmt_flags(int f); 126 static void p_rtentry (struct rtentry *); 127 static u_long forgemask (u_long); 128 static void domask (char *, u_long, u_long); 129 static const char *labelops(struct rtentry *); 130 131 /* 132 * Print routing tables. 133 */ 134 void 135 routepr(u_long rtree) 136 { 137 struct radix_node_head *rnh, head; 138 int i; 139 140 printf("Routing tables\n"); 141 142 if (Aflag == 0 && NewTree) { 143 ntreestuff(); 144 } else { 145 if (rtree == 0) { 146 printf("rt_tables: symbol not in namelist\n"); 147 return; 148 } 149 if (cpuflag >= 0) { 150 /* 151 * Severe hack. 152 */ 153 rtree += cpuflag * (AF_MAX + 1) * sizeof(void *); 154 } 155 if (kget(rtree, rt_tables) != 0) 156 return; 157 for (i = 0; i <= AF_MAX; i++) { 158 if ((rnh = rt_tables[i]) == NULL) 159 continue; 160 if (kget(rnh, head) != 0) 161 continue; 162 if (i == AF_UNSPEC) { 163 if (Aflag && af == 0) { 164 printf("Netmasks:\n"); 165 p_tree(head.rnh_treetop); 166 } 167 } else if (af == AF_UNSPEC || af == i) { 168 size_cols(i, head.rnh_treetop); 169 pr_family(i); 170 do_rtent = 1; 171 pr_rthdr(i); 172 p_tree(head.rnh_treetop); 173 } 174 } 175 } 176 } 177 178 /* 179 * Print address family header before a section of the routing table. 180 */ 181 void 182 pr_family(int af1) 183 { 184 const char *afname; 185 186 switch (af1) { 187 case AF_INET: 188 afname = "Internet"; 189 break; 190 #ifdef INET6 191 case AF_INET6: 192 afname = "Internet6"; 193 break; 194 #endif /*INET6*/ 195 case AF_CCITT: 196 afname = "X.25"; 197 break; 198 case AF_NETGRAPH: 199 afname = "Netgraph"; 200 break; 201 case AF_MPLS: 202 afname = "MPLS"; 203 break; 204 default: 205 afname = NULL; 206 break; 207 } 208 if (afname) 209 printf("\n%s:\n", afname); 210 else 211 printf("\nProtocol Family %d:\n", af1); 212 } 213 214 /* column widths; each followed by one space */ 215 #ifndef INET6 216 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 217 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 218 #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 219 #else 220 #define WID_DST_DEFAULT(af) \ 221 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 222 #define WID_GW_DEFAULT(af) \ 223 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 224 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 :6)) 225 #endif /*INET6*/ 226 227 static int wid_dst; 228 static int wid_gw; 229 static int wid_flags; 230 static int wid_refs; 231 static int wid_use; 232 static int wid_mtu; 233 static int wid_if; 234 static int wid_expire; 235 static int wid_mplslops; 236 static int wid_msl; 237 static int wid_iwmax; 238 static int wid_iw; 239 240 static void 241 size_cols(int ef, struct radix_node *rn) 242 { 243 wid_dst = WID_DST_DEFAULT(ef); 244 wid_gw = WID_GW_DEFAULT(ef); 245 wid_flags = 6; 246 wid_refs = 6; 247 wid_use = 8; 248 wid_mtu = 6; 249 wid_if = WID_IF_DEFAULT(ef); 250 wid_expire = 6; 251 wid_mplslops = 7; 252 wid_msl = 7; 253 wid_iwmax = 5; 254 wid_iw = 2; 255 256 if (Wflag) 257 size_cols_tree(rn); 258 } 259 260 static void 261 size_cols_tree(struct radix_node *rn) 262 { 263 again: 264 if (kget(rn, rnode) != 0) 265 return; 266 if (!(rnode.rn_flags & RNF_ACTIVE)) 267 return; 268 if (rnode.rn_bit < 0) { 269 if ((rnode.rn_flags & RNF_ROOT) == 0) { 270 if (kget(rn, rtentry) != 0) 271 return; 272 size_cols_rtentry(&rtentry); 273 } 274 if ((rn = rnode.rn_dupedkey)) 275 goto again; 276 } else { 277 rn = rnode.rn_right; 278 size_cols_tree(rnode.rn_left); 279 size_cols_tree(rn); 280 } 281 } 282 283 static void 284 size_cols_rtentry(struct rtentry *rt) 285 { 286 static struct ifnet ifnet, *lastif; 287 struct rtentry parent; 288 static char buffer[100]; 289 const char *bp; 290 struct sockaddr *sa; 291 sa_u addr, mask; 292 int len; 293 294 /* 295 * Don't print protocol-cloned routes unless -a. 296 */ 297 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 298 if (kget(rt->rt_parent, parent) != 0) 299 return; 300 if (parent.rt_flags & RTF_PRCLONING) 301 return; 302 } 303 304 bzero(&addr, sizeof(addr)); 305 if ((sa = kgetsa(rt_key(rt)))) 306 bcopy(sa, &addr, sa->sa_len); 307 bzero(&mask, sizeof(mask)); 308 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 309 bcopy(sa, &mask, sa->sa_len); 310 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 311 len = strlen(bp); 312 wid_dst = MAX(len, wid_dst); 313 314 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 315 len = strlen(bp); 316 wid_gw = MAX(len, wid_gw); 317 318 bp = fmt_flags(rt->rt_flags); 319 len = strlen(bp); 320 wid_flags = MAX(len, wid_flags); 321 322 if (addr.u_sa.sa_family == AF_INET || Wflag) { 323 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); 324 wid_refs = MAX(len, wid_refs); 325 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 326 wid_use = MAX(len, wid_use); 327 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 328 len = snprintf(buffer, sizeof(buffer), 329 "%lu", rt->rt_rmx.rmx_mtu); 330 wid_mtu = MAX(len, wid_mtu); 331 } 332 } 333 if (rt->rt_ifp) { 334 if (rt->rt_ifp != lastif) { 335 if (kget(rt->rt_ifp, ifnet) == 0) 336 len = strlen(ifnet.if_xname); 337 else 338 len = strlen("---"); 339 lastif = rt->rt_ifp; 340 wid_if = MAX(len, wid_if); 341 } 342 if (rt->rt_rmx.rmx_expire) { 343 struct timespec sp; 344 int expire_time; 345 346 clock_gettime(CLOCK_MONOTONIC, &sp); 347 348 expire_time = (int)(rt->rt_rmx.rmx_expire - sp.tv_sec); 349 350 if (expire_time > 0) { 351 snprintf(buffer, sizeof(buffer), "%d", 352 (int)expire_time); 353 wid_expire = MAX(len, wid_expire); 354 } 355 } 356 } 357 if (Wflag) { 358 if (rt->rt_shim[0] != NULL) { 359 len = strlen(labelops(rt)); 360 wid_mplslops = MAX(len, wid_mplslops); 361 } 362 363 if (rt->rt_rmx.rmx_msl) { 364 len = snprintf(buffer, sizeof(buffer), 365 "%lu", rt->rt_rmx.rmx_msl); 366 wid_msl = MAX(len, wid_msl); 367 } 368 if (rt->rt_rmx.rmx_iwmaxsegs) { 369 len = snprintf(buffer, sizeof(buffer), 370 "%lu", rt->rt_rmx.rmx_iwmaxsegs); 371 wid_iwmax = MAX(len, wid_iwmax); 372 } 373 if (rt->rt_rmx.rmx_iwcapsegs) { 374 len = snprintf(buffer, sizeof(buffer), 375 "%lu", rt->rt_rmx.rmx_iwcapsegs); 376 wid_iw = MAX(len, wid_iw); 377 } 378 } 379 } 380 381 382 /* 383 * Print header for routing table columns. 384 */ 385 void 386 pr_rthdr(int af1) 387 { 388 389 if (Aflag) 390 printf("%-8.8s ","Address"); 391 if (af1 == AF_INET || Wflag) { 392 if (Wflag) { 393 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s " 394 "%*s %-*s%*s %*s %*s\n", 395 wid_dst, wid_dst, "Destination", 396 wid_gw, wid_gw, "Gateway", 397 wid_flags, wid_flags, "Flags", 398 wid_refs, wid_refs, "Refs", 399 wid_use, wid_use, "Use", 400 wid_mtu, wid_mtu, "Mtu", 401 wid_if, wid_if, "Netif", 402 wid_expire, "Expire", 403 wid_mplslops, "Labelops", 404 wid_msl, "Msl", 405 wid_iwmax, "IWmax", 406 wid_iw, "IW"); 407 } else { 408 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 409 wid_dst, wid_dst, "Destination", 410 wid_gw, wid_gw, "Gateway", 411 wid_flags, wid_flags, "Flags", 412 wid_refs, wid_refs, "Refs", 413 wid_use, wid_use, "Use", 414 wid_if, wid_if, "Netif", 415 wid_expire, "Expire"); 416 } 417 } else { 418 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 419 wid_dst, wid_dst, "Destination", 420 wid_gw, wid_gw, "Gateway", 421 wid_flags, wid_flags, "Flags", 422 wid_if, wid_if, "Netif", 423 wid_expire, "Expire"); 424 } 425 } 426 427 static struct sockaddr * 428 kgetsa(const struct sockaddr *dst) 429 { 430 431 if (kget(dst, pt_u.u_sa) != 0) 432 return (NULL); 433 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 434 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 435 return (&pt_u.u_sa); 436 } 437 438 static void 439 p_tree(struct radix_node *rn) 440 { 441 442 again: 443 if (kget(rn, rnode) != 0) 444 return; 445 if (!(rnode.rn_flags & RNF_ACTIVE)) 446 return; 447 if (rnode.rn_bit < 0) { 448 if (Aflag) 449 printf("%-8.8lx ", (u_long)rn); 450 if (rnode.rn_flags & RNF_ROOT) { 451 if (Aflag) 452 printf("(root node)%s", 453 rnode.rn_dupedkey ? " =>\n" : "\n"); 454 } else if (do_rtent) { 455 if (kget(rn, rtentry) == 0) { 456 p_rtentry(&rtentry); 457 if (Aflag) 458 p_rtnode(); 459 } 460 } else { 461 p_sockaddr(kgetsa(constSA(rnode.rn_key)), NULL, 0, 44); 462 putchar('\n'); 463 } 464 if ((rn = rnode.rn_dupedkey)) 465 goto again; 466 } else { 467 if (Aflag && do_rtent) { 468 printf("%-8.8lx ", (u_long)rn); 469 p_rtnode(); 470 } 471 rn = rnode.rn_right; 472 p_tree(rnode.rn_left); 473 p_tree(rn); 474 } 475 } 476 477 char nbuf[20]; 478 479 static void 480 p_rtnode(void) 481 { 482 struct radix_mask *rm = rnode.rn_mklist; 483 484 if (rnode.rn_bit < 0) { 485 if (rnode.rn_mask) { 486 printf("\t mask "); 487 p_sockaddr(kgetsa(constSA(rnode.rn_mask)), 488 NULL, 0, -1); 489 } else if (rm == NULL) 490 return; 491 } else { 492 sprintf(nbuf, "(%d)", rnode.rn_bit); 493 printf("%6.6s %8.8lx : %8.8lx", nbuf, 494 (u_long)rnode.rn_left, (u_long)rnode.rn_right); 495 } 496 while (rm) { 497 if (kget(rm, rmask) != 0) 498 break; 499 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 500 printf(" mk = %8.8lx {(%d),%s", (u_long)rm, 501 -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 502 if (rmask.rm_flags & RNF_NORMAL) { 503 struct radix_node rnode_aux; 504 printf(" <normal>, "); 505 if (kget(rmask.rm_leaf, rnode_aux) == 0) 506 p_sockaddr(kgetsa(constSA(rnode_aux.rn_mask)), 507 NULL, 0, -1); 508 else 509 p_sockaddr(NULL, NULL, 0, -1); 510 } else { 511 p_sockaddr(kgetsa(constSA(rmask.rm_mask)), 512 NULL, 0, -1); 513 } 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) && mask && 630 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) ==0L) 631 cp = "default" ; 632 else if (flags & RTF_HOST) 633 cp = routename(sin->sin_addr.s_addr); 634 else if (mask) 635 cp = netname(sin->sin_addr.s_addr, 636 ntohl(((struct sockaddr_in *)mask) 637 ->sin_addr.s_addr)); 638 else 639 cp = netname(sin->sin_addr.s_addr, 0L); 640 break; 641 } 642 643 #ifdef INET6 644 case AF_INET6: 645 { 646 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 647 struct in6_addr *in6 = &sa6->sin6_addr; 648 649 /* 650 * XXX: This is a special workaround for KAME kernels. 651 * sin6_scope_id field of SA should be set in the future. 652 */ 653 if (IN6_IS_ADDR_LINKLOCAL(in6) || 654 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 655 /* XXX: override is ok? */ 656 sa6->sin6_scope_id = 657 (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 658 *(u_short *)&in6->s6_addr[2] = 0; 659 } 660 661 if (flags & RTF_HOST) 662 cp = routename6(sa6); 663 else if (mask) 664 cp = netname6(sa6, 665 &((struct sockaddr_in6 *)mask)->sin6_addr); 666 else 667 cp = netname6(sa6, NULL); 668 break; 669 } 670 #endif /*INET6*/ 671 672 case AF_NETGRAPH: 673 { 674 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 675 break; 676 } 677 case AF_LINK: 678 { 679 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 680 681 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 682 sdl->sdl_slen == 0) 683 sprintf(workbuf, "link#%d", sdl->sdl_index); 684 else 685 switch (sdl->sdl_type) { 686 687 case IFT_ETHER: 688 case IFT_L2VLAN: 689 case IFT_CARP: 690 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 691 cp = ether_ntoa((struct ether_addr *) 692 (sdl->sdl_data + sdl->sdl_nlen)); 693 break; 694 } 695 /* FALLTHROUGH */ 696 default: 697 cp = link_ntoa(sdl); 698 break; 699 } 700 break; 701 } 702 703 case AF_MPLS: 704 { 705 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; 706 707 (void) sprintf(workbuf, "%d", ntohl(smpls->smpls_label)); 708 break; 709 } 710 711 default: 712 { 713 u_char *s = (u_char *)sa->sa_data, *slim; 714 char *cq, *cqlim; 715 716 cq = workbuf; 717 slim = sa->sa_len + (u_char *) sa; 718 cqlim = cq + sizeof(workbuf) - 6; 719 cq += sprintf(cq, "(%d)", sa->sa_family); 720 while (s < slim && cq < cqlim) { 721 cq += sprintf(cq, " %02x", *s++); 722 if (s < slim) 723 cq += sprintf(cq, "%02x", *s++); 724 } 725 cp = workbuf; 726 } 727 } 728 729 return (cp); 730 } 731 732 static void 733 p_flags(int f, const char *format) 734 { 735 printf(format, fmt_flags(f)); 736 } 737 738 static const char * 739 fmt_flags(int f) 740 { 741 static char name[33]; 742 char *flags; 743 struct bits *p = bits; 744 745 for (flags = name; p->b_mask; p++) 746 if (p->b_mask & f) 747 *flags++ = p->b_val; 748 *flags = '\0'; 749 return (name); 750 } 751 752 static void 753 p_rtentry(struct rtentry *rt) 754 { 755 static struct ifnet ifnet, *lastif; 756 struct rtentry parent; 757 static char buffer[128]; 758 static char prettyname[128]; 759 struct sockaddr *sa; 760 sa_u addr, mask; 761 762 /* 763 * Don't print protocol-cloned routes unless -a or -A. 764 */ 765 if (rt->rt_flags & RTF_WASCLONED && !(aflag || Aflag)) { 766 if (kget(rt->rt_parent, parent) != 0) 767 return; 768 if (parent.rt_flags & RTF_PRCLONING) 769 return; 770 } 771 772 bzero(&addr, sizeof(addr)); 773 if ((sa = kgetsa(rt_key(rt)))) 774 bcopy(sa, &addr, sa->sa_len); 775 bzero(&mask, sizeof(mask)); 776 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 777 bcopy(sa, &mask, sa->sa_len); 778 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 779 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 780 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 781 p_flags(rt->rt_flags, buffer); 782 if (addr.u_sa.sa_family == AF_INET || Wflag) { 783 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 784 wid_use, rt->rt_use); 785 if (Wflag) { 786 if (rt->rt_rmx.rmx_mtu != 0) 787 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 788 else 789 printf("%*s ", wid_mtu, ""); 790 } 791 } 792 if (rt->rt_ifp) { 793 if (rt->rt_ifp != lastif) { 794 if (kget(rt->rt_ifp, ifnet) == 0) 795 strlcpy(prettyname, ifnet.if_xname, 796 sizeof(prettyname)); 797 else 798 strlcpy(prettyname, "---", sizeof(prettyname)); 799 lastif = rt->rt_ifp; 800 } 801 printf("%*.*s", wid_if, wid_if, prettyname); 802 if (rt->rt_rmx.rmx_expire) { 803 struct timespec sp; 804 int expire_time; 805 806 clock_gettime(CLOCK_MONOTONIC, &sp); 807 808 expire_time = (int)(rt->rt_rmx.rmx_expire - sp.tv_sec); 809 if (expire_time > 0) 810 printf(" %*d", wid_expire, (int)expire_time); 811 else 812 printf("%*s ", wid_expire, ""); 813 } else { 814 printf("%*s ", wid_expire, ""); 815 } 816 if (rt->rt_nodes[0].rn_dupedkey) 817 printf(" =>"); 818 } 819 if (Wflag) { 820 if (rt->rt_shim[0] != NULL) 821 printf(" %-*s", wid_mplslops, labelops(rt)); 822 else 823 printf(" %-*s", wid_mplslops, ""); 824 if (rt->rt_rmx.rmx_msl != 0) 825 printf(" %*lu", wid_msl, rt->rt_rmx.rmx_msl); 826 else 827 printf("%*s ", wid_msl, ""); 828 if (rt->rt_rmx.rmx_iwmaxsegs != 0) 829 printf(" %*lu", wid_iwmax, rt->rt_rmx.rmx_iwmaxsegs); 830 else 831 printf("%*s ", wid_iwmax, ""); 832 if (rt->rt_rmx.rmx_iwcapsegs != 0) 833 printf(" %*lu", wid_iw, rt->rt_rmx.rmx_iwcapsegs); 834 else 835 printf("%*s ", wid_iw, ""); 836 } 837 putchar('\n'); 838 } 839 840 char * 841 routename(u_long in) 842 { 843 char *cp; 844 static char line[MAXHOSTNAMELEN]; 845 struct hostent *hp; 846 847 cp = NULL; 848 if (!numeric_addr) { 849 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET); 850 if (hp) { 851 cp = hp->h_name; 852 trimdomain(cp, strlen(cp)); 853 } 854 } 855 if (cp) { 856 strncpy(line, cp, sizeof(line) - 1); 857 line[sizeof(line) - 1] = '\0'; 858 } else { 859 #define C(x) ((x) & 0xff) 860 in = ntohl(in); 861 sprintf(line, "%lu.%lu.%lu.%lu", 862 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 863 } 864 return (line); 865 } 866 867 static u_long 868 forgemask(u_long a) 869 { 870 u_long m; 871 872 if (IN_CLASSA(a)) 873 m = IN_CLASSA_NET; 874 else if (IN_CLASSB(a)) 875 m = IN_CLASSB_NET; 876 else 877 m = IN_CLASSC_NET; 878 return (m); 879 } 880 881 static void 882 domask(char *dst, u_long addr, u_long mask) 883 { 884 int b, bb, i; 885 886 if (!mask || (forgemask(addr) == mask)) { 887 *dst = '\0'; 888 return; 889 } 890 i = 0; 891 for (b = 0; b < 32; b++) 892 if (mask & (1 << b)) { 893 i = b; 894 for (bb = b+1; bb < 32; bb++) 895 if (!(mask & (1 << bb))) { 896 i = -1; /* noncontig */ 897 break; 898 } 899 break; 900 } 901 if (i == -1) 902 sprintf(dst, "&0x%lx", mask); 903 else 904 sprintf(dst, "/%d", 32-i); 905 } 906 907 /* 908 * Return the name of the network whose address is given. 909 * The address is assumed to be that of a net or subnet, not a host. 910 */ 911 char * 912 netname(u_long in, u_long mask) 913 { 914 char *cp = NULL; 915 static char line[MAXHOSTNAMELEN]; 916 struct netent *np = NULL; 917 u_long dmask; 918 u_long i; 919 920 #define NSHIFT(m) ( \ 921 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 922 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 923 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 924 0) 925 926 i = ntohl(in); 927 dmask = forgemask(i); 928 if (!numeric_addr && i) { 929 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 930 if (np == NULL && mask == 0) 931 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 932 if (np != NULL) { 933 cp = np->n_name; 934 trimdomain(cp, strlen(cp)); 935 } 936 } 937 #undef NSHIFT 938 if (cp != NULL) { 939 strncpy(line, cp, sizeof(line) - 1); 940 line[sizeof(line) - 1] = '\0'; 941 } else { 942 if (mask <= IN_CLASSA_NET && 943 (i & IN_CLASSA_HOST) == 0) { 944 sprintf(line, "%lu", C(i >> 24)); 945 } else if (mask <= IN_CLASSB_NET && 946 (i & IN_CLASSB_HOST) == 0) { 947 sprintf(line, "%lu.%lu", 948 C(i >> 24), C(i >> 16)); 949 } else if (mask <= IN_CLASSC_NET && 950 (i & IN_CLASSC_HOST) == 0) { 951 sprintf(line, "%lu.%lu.%lu", 952 C(i >> 24), C(i >> 16), C(i >> 8)); 953 } else { 954 sprintf(line, "%lu.%lu.%lu.%lu", 955 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 956 } 957 } 958 domask(line + strlen(line), i, mask); 959 return (line); 960 } 961 962 #ifdef INET6 963 const char * 964 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 965 { 966 static char line[MAXHOSTNAMELEN]; 967 u_char *p = (u_char *)mask; 968 u_char *lim; 969 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 970 971 if (mask) { 972 for (masklen = 0, lim = p + 16; p < lim; p++) { 973 switch (*p) { 974 case 0xff: 975 masklen += 8; 976 break; 977 case 0xfe: 978 masklen += 7; 979 break; 980 case 0xfc: 981 masklen += 6; 982 break; 983 case 0xf8: 984 masklen += 5; 985 break; 986 case 0xf0: 987 masklen += 4; 988 break; 989 case 0xe0: 990 masklen += 3; 991 break; 992 case 0xc0: 993 masklen += 2; 994 break; 995 case 0x80: 996 masklen += 1; 997 break; 998 case 0x00: 999 break; 1000 default: 1001 illegal ++; 1002 break; 1003 } 1004 } 1005 if (illegal) 1006 fprintf(stderr, "illegal prefixlen\n"); 1007 } 1008 else 1009 masklen = 128; 1010 1011 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 1012 return("default"); 1013 1014 if (numeric_addr) 1015 flag |= NI_NUMERICHOST; 1016 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 1017 NULL, 0, flag); 1018 1019 if (numeric_addr) 1020 sprintf(&line[strlen(line)], "/%d", masklen); 1021 1022 return line; 1023 } 1024 1025 char * 1026 routename6(struct sockaddr_in6 *sa6) 1027 { 1028 static char line[MAXHOSTNAMELEN]; 1029 int flag = NI_WITHSCOPEID; 1030 /* use local variable for safety */ 1031 struct sockaddr_in6 sa6_local; 1032 1033 sa6_local.sin6_family = AF_INET6; 1034 sa6_local.sin6_len = sizeof(sa6_local); 1035 sa6_local.sin6_addr = sa6->sin6_addr; 1036 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 1037 1038 if (numeric_addr) 1039 flag |= NI_NUMERICHOST; 1040 1041 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 1042 line, sizeof(line), NULL, 0, flag); 1043 1044 return line; 1045 } 1046 #endif /*INET6*/ 1047 1048 /* 1049 * Print routing statistics 1050 */ 1051 void 1052 rt_stats(void) 1053 { 1054 struct rtstatistics rts; 1055 int error = 0; 1056 1057 error = kinfo_get_net_rtstatistics(&rts); 1058 if (error) { 1059 printf("routing: could not retrieve statistics\n"); 1060 return; 1061 } 1062 printf("routing:\n"); 1063 1064 #define p(f, m) if (rts.f || sflag <= 1) \ 1065 printf(m, rts.f, plural(rts.f)) 1066 1067 p(rts_badredirect, "\t%lu bad routing redirect%s\n"); 1068 p(rts_dynamic, "\t%lu dynamically created route%s\n"); 1069 p(rts_newgateway, "\t%lu new gateway%s due to redirects\n"); 1070 p(rts_unreach, "\t%lu destination%s found unreachable\n"); 1071 p(rts_wildcard, "\t%lu use%s of a wildcard route\n"); 1072 #undef p 1073 } 1074 1075 static const char * 1076 labelops(struct rtentry *rt) 1077 { 1078 const char *lops[] = { "push", "pop", "swap", "pop all" }; 1079 static char buffer[100]; 1080 char *cp = buffer; 1081 struct sockaddr_mpls *smpls; 1082 int i; 1083 1084 for (i=0; i<MPLS_MAXLOPS; ++i) { 1085 1086 if (rt->rt_shim[i] == NULL) 1087 break; 1088 if (i>0) { 1089 cp += snprintf(cp, 1090 sizeof(buffer) - (cp - buffer), 1091 ", "); 1092 } 1093 smpls = (struct sockaddr_mpls *)kgetsa(rt->rt_shim[i]); 1094 if (smpls->smpls_op != MPLSLOP_POP && 1095 smpls->smpls_op != MPLSLOP_POPALL){ 1096 cp += snprintf(cp, 1097 sizeof(buffer) - (cp - buffer), 1098 "%s %d", 1099 lops[smpls->smpls_op - 1], 1100 ntohl(smpls->smpls_label)); 1101 } else { 1102 cp += snprintf(cp, 1103 sizeof(buffer) - (cp - buffer), 1104 "%s", 1105 lops[smpls->smpls_op - 1]); 1106 } 1107 } 1108 1109 return (buffer); 1110 } 1111