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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)route.c 8.6 (Berkeley) 4/28/95 34 * $FreeBSD: src/usr.bin/netstat/route.c,v 1.41.2.14 2002/07/17 02:22:22 kbyanc Exp $ 35 * $DragonFly: src/usr.bin/netstat/route.c,v 1.13 2008/07/07 22:02:10 nant Exp $ 36 */ 37 38 #include <sys/kinfo.h> 39 #include <sys/param.h> 40 #include <sys/socket.h> 41 #include <sys/time.h> 42 43 #include <net/ethernet.h> 44 #include <net/if.h> 45 #include <net/if_var.h> 46 #include <net/if_dl.h> 47 #include <net/if_types.h> 48 #include <net/route.h> 49 50 #include <netinet/in.h> 51 #include <netipx/ipx.h> 52 #include <netatalk/at.h> 53 #include <netgraph/socket/ng_socket.h> 54 55 #ifdef NS 56 #include <netns/ns.h> 57 #endif 58 59 #include <netproto/mpls/mpls.h> 60 61 #include <sys/sysctl.h> 62 63 #include <arpa/inet.h> 64 #include <libutil.h> 65 #include <netdb.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <unistd.h> 70 #include <err.h> 71 #include <time.h> 72 #include <kinfo.h> 73 #include "netstat.h" 74 75 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 76 77 78 /* alignment constraint for routing socket */ 79 #define ROUNDUP(a) \ 80 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 81 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 82 83 /* 84 * Definitions for showing gateway flags. 85 */ 86 struct bits { 87 u_long b_mask; 88 char b_val; 89 } bits[] = { 90 { RTF_UP, 'U' }, 91 { RTF_GATEWAY, 'G' }, 92 { RTF_HOST, 'H' }, 93 { RTF_REJECT, 'R' }, 94 { RTF_DYNAMIC, 'D' }, 95 { RTF_MODIFIED, 'M' }, 96 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 97 { RTF_CLONING, 'C' }, 98 { RTF_XRESOLVE, 'X' }, 99 { RTF_LLINFO, 'L' }, 100 { RTF_STATIC, 'S' }, 101 { RTF_PROTO1, '1' }, 102 { RTF_PROTO2, '2' }, 103 { RTF_WASCLONED,'W' }, 104 { RTF_PRCLONING,'c' }, 105 { RTF_PROTO3, '3' }, 106 { RTF_BLACKHOLE,'B' }, 107 { RTF_BROADCAST,'b' }, 108 { RTF_MPLSOPS, 'm' }, 109 { 0, 0 } 110 }; 111 112 typedef union { 113 long dummy; /* Helps align structure. */ 114 struct sockaddr u_sa; 115 u_short u_data[128]; 116 } sa_u; 117 118 static sa_u pt_u; 119 120 int do_rtent = 0; 121 struct rtentry rtentry; 122 struct radix_node rnode; 123 struct radix_mask rmask; 124 struct radix_node_head *rt_tables[AF_MAX+1]; 125 126 int NewTree = 0; 127 128 static struct sockaddr *kgetsa (struct sockaddr *); 129 static void size_cols (int ef, struct radix_node *rn); 130 static void size_cols_tree (struct radix_node *rn); 131 static void size_cols_rtentry (struct rtentry *rt); 132 static void p_tree (struct radix_node *); 133 static void p_rtnode (void); 134 static void ntreestuff (void); 135 static void np_rtentry (struct rt_msghdr *); 136 static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 137 static const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, 138 int flags); 139 static void p_flags (int, const char *); 140 static const char *fmt_flags(int f); 141 static void p_rtentry (struct rtentry *); 142 static u_long forgemask (u_long); 143 static void domask (char *, u_long, u_long); 144 static const char *labelops(struct rtentry *); 145 146 /* 147 * Print routing tables. 148 */ 149 void 150 routepr(u_long rtree) 151 { 152 struct radix_node_head *rnh, head; 153 int i; 154 155 printf("Routing tables\n"); 156 157 if (Aflag == 0 && NewTree) { 158 ntreestuff(); 159 } else { 160 if (rtree == 0) { 161 printf("rt_tables: symbol not in namelist\n"); 162 return; 163 } 164 if (cpuflag >= 0) { 165 /* 166 * Severe hack. 167 */ 168 rtree += cpuflag * (AF_MAX + 1) * sizeof(void *); 169 } 170 kget(rtree, rt_tables); 171 for (i = 0; i <= AF_MAX; i++) { 172 if ((rnh = rt_tables[i]) == 0) 173 continue; 174 kget(rnh, head); 175 if (i == AF_UNSPEC) { 176 if (Aflag && af == 0) { 177 printf("Netmasks:\n"); 178 p_tree(head.rnh_treetop); 179 } 180 } else if (af == AF_UNSPEC || af == i) { 181 size_cols(i, head.rnh_treetop); 182 pr_family(i); 183 do_rtent = 1; 184 pr_rthdr(i); 185 p_tree(head.rnh_treetop); 186 } 187 } 188 } 189 } 190 191 /* 192 * Print address family header before a section of the routing table. 193 */ 194 void 195 pr_family(int af1) 196 { 197 const char *afname; 198 199 switch (af1) { 200 case AF_INET: 201 afname = "Internet"; 202 break; 203 #ifdef INET6 204 case AF_INET6: 205 afname = "Internet6"; 206 break; 207 #endif /*INET6*/ 208 case AF_IPX: 209 afname = "IPX"; 210 break; 211 #ifdef NS 212 case AF_NS: 213 afname = "XNS"; 214 break; 215 #endif 216 case AF_ISO: 217 afname = "ISO"; 218 break; 219 case AF_APPLETALK: 220 afname = "AppleTalk"; 221 break; 222 case AF_CCITT: 223 afname = "X.25"; 224 break; 225 case AF_NETGRAPH: 226 afname = "Netgraph"; 227 break; 228 case AF_MPLS: 229 afname = "MPLS"; 230 break; 231 default: 232 afname = NULL; 233 break; 234 } 235 if (afname) 236 printf("\n%s:\n", afname); 237 else 238 printf("\nProtocol Family %d:\n", af1); 239 } 240 241 /* column widths; each followed by one space */ 242 #ifndef INET6 243 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 244 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 245 #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 246 #else 247 #define WID_DST_DEFAULT(af) \ 248 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 249 #define WID_GW_DEFAULT(af) \ 250 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 251 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 :6)) 252 #endif /*INET6*/ 253 254 static int wid_dst; 255 static int wid_gw; 256 static int wid_flags; 257 static int wid_refs; 258 static int wid_use; 259 static int wid_mtu; 260 static int wid_if; 261 static int wid_expire; 262 static int wid_mplslops; 263 264 static void 265 size_cols(int ef, struct radix_node *rn) 266 { 267 wid_dst = WID_DST_DEFAULT(ef); 268 wid_gw = WID_GW_DEFAULT(ef); 269 wid_flags = 6; 270 wid_refs = 6; 271 wid_use = 8; 272 wid_mtu = 6; 273 wid_if = WID_IF_DEFAULT(ef); 274 wid_expire = 6; 275 wid_mplslops = 7; 276 277 if (Wflag) 278 size_cols_tree(rn); 279 } 280 281 static void 282 size_cols_tree(struct radix_node *rn) 283 { 284 again: 285 kget(rn, rnode); 286 if (rnode.rn_bit < 0) { 287 if ((rnode.rn_flags & RNF_ROOT) == 0) { 288 kget(rn, rtentry); 289 size_cols_rtentry(&rtentry); 290 } 291 if ((rn = rnode.rn_dupedkey)) 292 goto again; 293 } else { 294 rn = rnode.rn_right; 295 size_cols_tree(rnode.rn_left); 296 size_cols_tree(rn); 297 } 298 } 299 300 static void 301 size_cols_rtentry(struct rtentry *rt) 302 { 303 static struct ifnet ifnet, *lastif; 304 struct rtentry parent; 305 static char buffer[100]; 306 const char *bp; 307 struct sockaddr *sa; 308 sa_u addr, mask; 309 int len; 310 311 /* 312 * Don't print protocol-cloned routes unless -a. 313 */ 314 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 315 kget(rt->rt_parent, parent); 316 if (parent.rt_flags & RTF_PRCLONING) 317 return; 318 } 319 320 bzero(&addr, sizeof(addr)); 321 if ((sa = kgetsa(rt_key(rt)))) 322 bcopy(sa, &addr, sa->sa_len); 323 bzero(&mask, sizeof(mask)); 324 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 325 bcopy(sa, &mask, sa->sa_len); 326 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 327 len = strlen(bp); 328 wid_dst = MAX(len, wid_dst); 329 330 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 331 len = strlen(bp); 332 wid_gw = MAX(len, wid_gw); 333 334 bp = fmt_flags(rt->rt_flags); 335 len = strlen(bp); 336 wid_flags = MAX(len, wid_flags); 337 338 if (addr.u_sa.sa_family == AF_INET || Wflag) { 339 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); 340 wid_refs = MAX(len, wid_refs); 341 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 342 wid_use = MAX(len, wid_use); 343 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 344 len = snprintf(buffer, sizeof(buffer), 345 "%lu", rt->rt_rmx.rmx_mtu); 346 wid_mtu = MAX(len, wid_mtu); 347 } 348 } 349 if (rt->rt_ifp) { 350 if (rt->rt_ifp != lastif) { 351 kget(rt->rt_ifp, ifnet); 352 lastif = rt->rt_ifp; 353 len = strlen(ifnet.if_xname); 354 wid_if = MAX(len, wid_if); 355 } 356 if (rt->rt_rmx.rmx_expire) { 357 time_t expire_time; 358 359 if ((expire_time = 360 rt->rt_rmx.rmx_expire - time(NULL)) > 0) { 361 snprintf(buffer, sizeof(buffer), "%d", 362 (int)expire_time); 363 wid_expire = MAX(len, wid_expire); 364 } 365 } 366 } 367 if (rt->rt_shim[0] != NULL) 368 len = strlen(labelops(rt)); 369 wid_mplslops = MAX(len, wid_mplslops); 370 } 371 372 373 /* 374 * Print header for routing table columns. 375 */ 376 void 377 pr_rthdr(int af1) 378 { 379 380 if (Aflag) 381 printf("%-8.8s ","Address"); 382 if (af1 == AF_INET || Wflag) { 383 if (Wflag) { 384 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s %*s %-*s\n", 385 wid_dst, wid_dst, "Destination", 386 wid_gw, wid_gw, "Gateway", 387 wid_flags, wid_flags, "Flags", 388 wid_refs, wid_refs, "Refs", 389 wid_use, wid_use, "Use", 390 wid_mtu, wid_mtu, "Mtu", 391 wid_if, wid_if, "Netif", 392 wid_expire, "Expire", 393 wid_mplslops, "Labelops"); 394 } else { 395 printf("%-*.*s %-*.*s %-*.*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_if, wid_if, "Netif", 402 wid_expire, "Expire"); 403 } 404 } else { 405 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 406 wid_dst, wid_dst, "Destination", 407 wid_gw, wid_gw, "Gateway", 408 wid_flags, wid_flags, "Flags", 409 wid_if, wid_if, "Netif", 410 wid_expire, "Expire"); 411 } 412 } 413 414 static struct sockaddr * 415 kgetsa(struct sockaddr *dst) 416 { 417 418 kget(dst, pt_u.u_sa); 419 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 420 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 421 return (&pt_u.u_sa); 422 } 423 424 static void 425 p_tree(struct radix_node *rn) 426 { 427 428 again: 429 kget(rn, rnode); 430 if (rnode.rn_bit < 0) { 431 if (Aflag) 432 printf("%-8.8lx ", (u_long)rn); 433 if (rnode.rn_flags & RNF_ROOT) { 434 if (Aflag) 435 printf("(root node)%s", 436 rnode.rn_dupedkey ? " =>\n" : "\n"); 437 } else if (do_rtent) { 438 kget(rn, rtentry); 439 p_rtentry(&rtentry); 440 if (Aflag) 441 p_rtnode(); 442 } else { 443 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 444 NULL, 0, 44); 445 putchar('\n'); 446 } 447 if ((rn = rnode.rn_dupedkey)) 448 goto again; 449 } else { 450 if (Aflag && do_rtent) { 451 printf("%-8.8lx ", (u_long)rn); 452 p_rtnode(); 453 } 454 rn = rnode.rn_right; 455 p_tree(rnode.rn_left); 456 p_tree(rn); 457 } 458 } 459 460 char nbuf[20]; 461 462 static void 463 p_rtnode(void) 464 { 465 struct radix_mask *rm = rnode.rn_mklist; 466 467 if (rnode.rn_bit < 0) { 468 if (rnode.rn_mask) { 469 printf("\t mask "); 470 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 471 NULL, 0, -1); 472 } else if (rm == 0) 473 return; 474 } else { 475 sprintf(nbuf, "(%d)", rnode.rn_bit); 476 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 477 } 478 while (rm) { 479 kget(rm, rmask); 480 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 481 printf(" mk = %8.8lx {(%d),%s", 482 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 483 if (rmask.rm_flags & RNF_NORMAL) { 484 struct radix_node rnode_aux; 485 printf(" <normal>, "); 486 kget(rmask.rm_leaf, rnode_aux); 487 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 488 NULL, 0, -1); 489 } else 490 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 491 NULL, 0, -1); 492 putchar('}'); 493 if ((rm = rmask.rm_next)) 494 printf(" ->"); 495 } 496 putchar('\n'); 497 } 498 499 static void 500 ntreestuff(void) 501 { 502 size_t needed; 503 int mib[7]; 504 int miblen; 505 char *buf, *next, *lim; 506 struct rt_msghdr *rtm; 507 508 mib[0] = CTL_NET; 509 mib[1] = PF_ROUTE; 510 mib[2] = 0; 511 mib[3] = 0; 512 mib[4] = NET_RT_DUMP; 513 mib[5] = 0; 514 if (cpuflag >= 0) { 515 mib[6] = cpuflag; 516 miblen = 7; 517 } else { 518 miblen = 6; 519 } 520 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0) { 521 err(1, "sysctl: net.route.0.0.dump estimate"); 522 } 523 524 if ((buf = malloc(needed)) == 0) { 525 err(2, "malloc(%lu)", (unsigned long)needed); 526 } 527 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0) { 528 err(1, "sysctl: net.route.0.0.dump"); 529 } 530 lim = buf + needed; 531 for (next = buf; next < lim; next += rtm->rtm_msglen) { 532 rtm = (struct rt_msghdr *)next; 533 np_rtentry(rtm); 534 } 535 } 536 537 static void 538 np_rtentry(struct rt_msghdr *rtm) 539 { 540 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 541 #ifdef notdef 542 static int masks_done, banner_printed; 543 #endif 544 static int old_af; 545 int af1 = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 546 547 #ifdef notdef 548 /* for the moment, netmasks are skipped over */ 549 if (!banner_printed) { 550 printf("Netmasks:\n"); 551 banner_printed = 1; 552 } 553 if (masks_done == 0) { 554 if (rtm->rtm_addrs != RTA_DST ) { 555 masks_done = 1; 556 af1 = sa->sa_family; 557 } 558 } else 559 #endif 560 af1 = sa->sa_family; 561 if (af1 != old_af) { 562 pr_family(af1); 563 old_af = af1; 564 } 565 if (rtm->rtm_addrs == RTA_DST) 566 p_sockaddr(sa, NULL, 0, 36); 567 else { 568 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 569 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 570 p_sockaddr(sa, NULL, 0, 18); 571 } 572 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 573 putchar('\n'); 574 } 575 576 static void 577 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 578 { 579 const char *cp; 580 581 cp = fmt_sockaddr(sa, mask, flags); 582 583 if (width < 0 ) 584 printf("%s ", cp); 585 else { 586 if (numeric_addr) 587 printf("%-*s ", width, cp); 588 else 589 printf("%-*.*s ", width, width, cp); 590 } 591 } 592 593 static const char * 594 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 595 { 596 static char workbuf[128]; 597 const char *cp = workbuf; 598 599 switch(sa->sa_family) { 600 case AF_INET: 601 { 602 struct sockaddr_in *sin = (struct sockaddr_in *)sa; 603 604 if ((sin->sin_addr.s_addr == INADDR_ANY) && 605 mask && 606 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 607 ==0L) 608 cp = "default" ; 609 else if (flags & RTF_HOST) 610 cp = routename(sin->sin_addr.s_addr); 611 else if (mask) 612 cp = netname(sin->sin_addr.s_addr, 613 ntohl(((struct sockaddr_in *)mask) 614 ->sin_addr.s_addr)); 615 else 616 cp = netname(sin->sin_addr.s_addr, 0L); 617 break; 618 } 619 620 #ifdef INET6 621 case AF_INET6: 622 { 623 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 624 struct in6_addr *in6 = &sa6->sin6_addr; 625 626 /* 627 * XXX: This is a special workaround for KAME kernels. 628 * sin6_scope_id field of SA should be set in the future. 629 */ 630 if (IN6_IS_ADDR_LINKLOCAL(in6) || 631 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 632 /* XXX: override is ok? */ 633 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 634 *(u_short *)&in6->s6_addr[2] = 0; 635 } 636 637 if (flags & RTF_HOST) 638 cp = routename6(sa6); 639 else if (mask) 640 cp = netname6(sa6, 641 &((struct sockaddr_in6 *)mask)->sin6_addr); 642 else { 643 cp = netname6(sa6, NULL); 644 } 645 break; 646 } 647 #endif /*INET6*/ 648 649 case AF_IPX: 650 { 651 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 652 if (ipx_nullnet(satoipx_addr(work))) 653 cp = "default"; 654 else 655 cp = ipx_print(sa); 656 break; 657 } 658 case AF_APPLETALK: 659 { 660 if (!(flags & RTF_HOST) && mask) 661 cp = atalk_print2(sa,mask,9); 662 else 663 cp = atalk_print(sa,11); 664 break; 665 } 666 case AF_NETGRAPH: 667 { 668 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 669 break; 670 } 671 #ifdef NS 672 case AF_NS: 673 cp = ns_print(sa); 674 break; 675 #endif 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 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 684 else 685 switch (sdl->sdl_type) { 686 687 case IFT_ETHER: 688 case IFT_L2VLAN: 689 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 690 cp = ether_ntoa((struct ether_addr *) 691 (sdl->sdl_data + sdl->sdl_nlen)); 692 break; 693 } 694 /* FALLTHROUGH */ 695 default: 696 cp = link_ntoa(sdl); 697 break; 698 } 699 break; 700 } 701 702 case AF_MPLS: 703 { 704 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; 705 706 (void) sprintf(workbuf, "%d", ntohl(smpls->smpls_label)); 707 break; 708 } 709 710 default: 711 { 712 u_char *s = (u_char *)sa->sa_data, *slim; 713 char *cq, *cqlim; 714 715 cq = workbuf; 716 slim = sa->sa_len + (u_char *) sa; 717 cqlim = cq + sizeof(workbuf) - 6; 718 cq += sprintf(cq, "(%d)", sa->sa_family); 719 while (s < slim && cq < cqlim) { 720 cq += sprintf(cq, " %02x", *s++); 721 if (s < slim) 722 cq += sprintf(cq, "%02x", *s++); 723 } 724 cp = workbuf; 725 } 726 } 727 728 return (cp); 729 } 730 731 static void 732 p_flags(int f, const char *format) 733 { 734 printf(format, fmt_flags(f)); 735 } 736 737 static const char * 738 fmt_flags(int f) 739 { 740 static char name[33]; 741 char *flags; 742 struct bits *p = bits; 743 744 for (flags = name; p->b_mask; p++) 745 if (p->b_mask & f) 746 *flags++ = p->b_val; 747 *flags = '\0'; 748 return (name); 749 } 750 751 static void 752 p_rtentry(struct rtentry *rt) 753 { 754 static struct ifnet ifnet, *lastif; 755 struct rtentry parent; 756 static char buffer[128]; 757 static char prettyname[128]; 758 struct sockaddr *sa; 759 sa_u addr, mask; 760 761 /* 762 * Don't print protocol-cloned routes unless -a. 763 */ 764 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 765 kget(rt->rt_parent, parent); 766 if (parent.rt_flags & RTF_PRCLONING) 767 return; 768 } 769 770 bzero(&addr, sizeof(addr)); 771 if ((sa = kgetsa(rt_key(rt)))) 772 bcopy(sa, &addr, sa->sa_len); 773 bzero(&mask, sizeof(mask)); 774 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 775 bcopy(sa, &mask, sa->sa_len); 776 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 777 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 778 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 779 p_flags(rt->rt_flags, buffer); 780 if (addr.u_sa.sa_family == AF_INET || Wflag) { 781 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 782 wid_use, rt->rt_use); 783 if (Wflag) { 784 if (rt->rt_rmx.rmx_mtu != 0) 785 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 786 else 787 printf("%*s ", wid_mtu, ""); 788 } 789 } 790 if (rt->rt_ifp) { 791 if (rt->rt_ifp != lastif) { 792 kget(rt->rt_ifp, ifnet); 793 lastif = rt->rt_ifp; 794 strlcpy(prettyname, ifnet.if_xname, sizeof(prettyname)); 795 } 796 printf("%*.*s", wid_if, wid_if, prettyname); 797 if (rt->rt_rmx.rmx_expire) { 798 time_t expire_time; 799 800 if ((expire_time = 801 rt->rt_rmx.rmx_expire - time(NULL)) > 0) 802 printf(" %*d", wid_expire, (int)expire_time); 803 } else { 804 printf("%*s ", wid_expire, ""); 805 } 806 if (rt->rt_nodes[0].rn_dupedkey) 807 printf(" =>"); 808 } 809 if (Wflag) { 810 if (rt->rt_shim[0] != NULL) 811 printf(" %-*s", wid_mplslops, labelops(rt)); 812 } 813 putchar('\n'); 814 } 815 816 char * 817 routename(u_long in) 818 { 819 char *cp; 820 static char line[MAXHOSTNAMELEN]; 821 struct hostent *hp; 822 823 cp = 0; 824 if (!numeric_addr) { 825 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET); 826 if (hp) { 827 cp = hp->h_name; 828 trimdomain(cp, strlen(cp)); 829 } 830 } 831 if (cp) { 832 strncpy(line, cp, sizeof(line) - 1); 833 line[sizeof(line) - 1] = '\0'; 834 } else { 835 #define C(x) ((x) & 0xff) 836 in = ntohl(in); 837 sprintf(line, "%lu.%lu.%lu.%lu", 838 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 839 } 840 return (line); 841 } 842 843 static u_long 844 forgemask(u_long a) 845 { 846 u_long m; 847 848 if (IN_CLASSA(a)) 849 m = IN_CLASSA_NET; 850 else if (IN_CLASSB(a)) 851 m = IN_CLASSB_NET; 852 else 853 m = IN_CLASSC_NET; 854 return (m); 855 } 856 857 static void 858 domask(char *dst, u_long addr, u_long mask) 859 { 860 int b, i; 861 862 if (!mask || (forgemask(addr) == mask)) { 863 *dst = '\0'; 864 return; 865 } 866 i = 0; 867 for (b = 0; b < 32; b++) 868 if (mask & (1 << b)) { 869 int bb; 870 871 i = b; 872 for (bb = b+1; bb < 32; bb++) 873 if (!(mask & (1 << bb))) { 874 i = -1; /* noncontig */ 875 break; 876 } 877 break; 878 } 879 if (i == -1) 880 sprintf(dst, "&0x%lx", mask); 881 else 882 sprintf(dst, "/%d", 32-i); 883 } 884 885 /* 886 * Return the name of the network whose address is given. 887 * The address is assumed to be that of a net or subnet, not a host. 888 */ 889 char * 890 netname(u_long in, u_long mask) 891 { 892 char *cp = 0; 893 static char line[MAXHOSTNAMELEN]; 894 struct netent *np = 0; 895 u_long dmask; 896 u_long i; 897 898 #define NSHIFT(m) ( \ 899 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 900 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 901 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 902 0) 903 904 i = ntohl(in); 905 dmask = forgemask(i); 906 if (!numeric_addr && i) { 907 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 908 if (np == NULL && mask == 0) 909 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 910 if (np != NULL) { 911 cp = np->n_name; 912 trimdomain(cp, strlen(cp)); 913 } 914 } 915 #undef NSHIFT 916 if (cp != NULL) { 917 strncpy(line, cp, sizeof(line) - 1); 918 line[sizeof(line) - 1] = '\0'; 919 } else { 920 if (mask <= IN_CLASSA_NET && 921 (i & IN_CLASSA_HOST) == 0) { 922 sprintf(line, "%lu", C(i >> 24)); 923 } else if (mask <= IN_CLASSB_NET && 924 (i & IN_CLASSB_HOST) == 0) { 925 sprintf(line, "%lu.%lu", 926 C(i >> 24), C(i >> 16)); 927 } else if (mask <= IN_CLASSC_NET && 928 (i & IN_CLASSC_HOST) == 0) { 929 sprintf(line, "%lu.%lu.%lu", 930 C(i >> 24), C(i >> 16), C(i >> 8)); 931 } else { 932 sprintf(line, "%lu.%lu.%lu.%lu", 933 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 934 } 935 } 936 domask(line + strlen(line), i, mask); 937 return (line); 938 } 939 940 #ifdef INET6 941 const char * 942 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 943 { 944 static char line[MAXHOSTNAMELEN]; 945 u_char *p = (u_char *)mask; 946 u_char *lim; 947 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 948 949 if (mask) { 950 for (masklen = 0, lim = p + 16; p < lim; p++) { 951 switch (*p) { 952 case 0xff: 953 masklen += 8; 954 break; 955 case 0xfe: 956 masklen += 7; 957 break; 958 case 0xfc: 959 masklen += 6; 960 break; 961 case 0xf8: 962 masklen += 5; 963 break; 964 case 0xf0: 965 masklen += 4; 966 break; 967 case 0xe0: 968 masklen += 3; 969 break; 970 case 0xc0: 971 masklen += 2; 972 break; 973 case 0x80: 974 masklen += 1; 975 break; 976 case 0x00: 977 break; 978 default: 979 illegal ++; 980 break; 981 } 982 } 983 if (illegal) 984 fprintf(stderr, "illegal prefixlen\n"); 985 } 986 else 987 masklen = 128; 988 989 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 990 return("default"); 991 992 if (numeric_addr) 993 flag |= NI_NUMERICHOST; 994 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 995 NULL, 0, flag); 996 997 if (numeric_addr) 998 sprintf(&line[strlen(line)], "/%d", masklen); 999 1000 return line; 1001 } 1002 1003 char * 1004 routename6(struct sockaddr_in6 *sa6) 1005 { 1006 static char line[MAXHOSTNAMELEN]; 1007 int flag = NI_WITHSCOPEID; 1008 /* use local variable for safety */ 1009 struct sockaddr_in6 sa6_local; 1010 1011 sa6_local.sin6_family = AF_INET6; 1012 sa6_local.sin6_len = sizeof(sa6_local); 1013 sa6_local.sin6_addr = sa6->sin6_addr; 1014 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 1015 1016 if (numeric_addr) 1017 flag |= NI_NUMERICHOST; 1018 1019 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 1020 line, sizeof(line), NULL, 0, flag); 1021 1022 return line; 1023 } 1024 #endif /*INET6*/ 1025 1026 /* 1027 * Print routing statistics 1028 */ 1029 void 1030 rt_stats(void) 1031 { 1032 struct rtstatistics rts; 1033 int error = 0; 1034 1035 error = kinfo_get_net_rtstatistics(&rts); 1036 if (error) { 1037 printf("routing: could not retrieve statistics\n"); 1038 return; 1039 } 1040 printf("routing:\n"); 1041 1042 #define p(f, m) if (rts.f || sflag <= 1) \ 1043 printf(m, rts.f, plural(rts.f)) 1044 1045 p(rts_badredirect, "\t%lu bad routing redirect%s\n"); 1046 p(rts_dynamic, "\t%lu dynamically created route%s\n"); 1047 p(rts_newgateway, "\t%lu new gateway%s due to redirects\n"); 1048 p(rts_unreach, "\t%lu destination%s found unreachable\n"); 1049 p(rts_wildcard, "\t%lu use%s of a wildcard route\n"); 1050 #undef p 1051 } 1052 1053 char * 1054 ipx_print(struct sockaddr *sa) 1055 { 1056 u_short port; 1057 struct servent *sp = 0; 1058 const char *net = "", *host = ""; 1059 char *p; 1060 u_char *q; 1061 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1062 static char mybuf[50]; 1063 char cport[10], chost[15], cnet[15]; 1064 1065 port = ntohs(work.x_port); 1066 1067 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1068 1069 if (port) { 1070 if (sp) 1071 sprintf(mybuf, "*.%s", sp->s_name); 1072 else 1073 sprintf(mybuf, "*.%x", port); 1074 } else 1075 sprintf(mybuf, "*.*"); 1076 1077 return (mybuf); 1078 } 1079 1080 if (ipx_wildnet(work)) 1081 net = "any"; 1082 else if (ipx_nullnet(work)) 1083 net = "*"; 1084 else { 1085 q = work.x_net.c_net; 1086 sprintf(cnet, "%02x%02x%02x%02x", 1087 q[0], q[1], q[2], q[3]); 1088 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1089 continue; 1090 net = p; 1091 } 1092 1093 if (ipx_wildhost(work)) 1094 host = "any"; 1095 else if (ipx_nullhost(work)) 1096 host = "*"; 1097 else { 1098 q = work.x_host.c_host; 1099 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1100 q[0], q[1], q[2], q[3], q[4], q[5]); 1101 for (p = chost; *p == '0' && p < chost + 12; p++) 1102 continue; 1103 host = p; 1104 } 1105 1106 if (port) { 1107 if (strcmp(host, "*") == 0) 1108 host = ""; 1109 if (sp) 1110 snprintf(cport, sizeof(cport), 1111 "%s%s", *host ? "." : "", sp->s_name); 1112 else 1113 snprintf(cport, sizeof(cport), 1114 "%s%x", *host ? "." : "", port); 1115 } else 1116 *cport = 0; 1117 1118 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1119 return(mybuf); 1120 } 1121 1122 char * 1123 ipx_phost(struct sockaddr *sa) 1124 { 1125 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1126 struct sockaddr_ipx work; 1127 static union ipx_net ipx_zeronet; 1128 char *p; 1129 struct ipx_addr in; 1130 1131 work = *sipx; 1132 in = work.sipx_addr; 1133 1134 work.sipx_addr.x_port = 0; 1135 work.sipx_addr.x_net = ipx_zeronet; 1136 p = ipx_print((struct sockaddr *)&work); 1137 if (strncmp("*.", p, 2) == 0) p += 2; 1138 1139 return(p); 1140 } 1141 1142 #ifdef NS 1143 short ns_nullh[] = {0,0,0}; 1144 short ns_bh[] = {-1,-1,-1}; 1145 1146 char * 1147 ns_print(struct sockaddr *sa) 1148 { 1149 struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 1150 struct ns_addr work; 1151 union { union ns_net net_e; u_long long_e; } net; 1152 u_short port; 1153 static char mybuf[50], cport[10], chost[25]; 1154 char *host = ""; 1155 char *p; u_char *q; 1156 1157 work = sns->sns_addr; 1158 port = ntohs(work.x_port); 1159 work.x_port = 0; 1160 net.net_e = work.x_net; 1161 if (ns_nullhost(work) && net.long_e == 0) { 1162 if (port ) { 1163 sprintf(mybuf, "*.%xH", port); 1164 upHex(mybuf); 1165 } else 1166 sprintf(mybuf, "*.*"); 1167 return (mybuf); 1168 } 1169 1170 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) { 1171 host = "any"; 1172 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 1173 host = "*"; 1174 } else { 1175 q = work.x_host.c_host; 1176 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 1177 q[0], q[1], q[2], q[3], q[4], q[5]); 1178 for (p = chost; *p == '0' && p < chost + 12; p++) 1179 continue; 1180 host = p; 1181 } 1182 if (port) 1183 sprintf(cport, ".%xH", htons(port)); 1184 else 1185 *cport = 0; 1186 1187 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport); 1188 upHex(mybuf); 1189 return(mybuf); 1190 } 1191 1192 char * 1193 ns_phost(struct sockaddr *sa) 1194 { 1195 struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 1196 struct sockaddr_ns work; 1197 static union ns_net ns_zeronet; 1198 char *p; 1199 1200 work = *sns; 1201 work.sns_addr.x_port = 0; 1202 work.sns_addr.x_net = ns_zeronet; 1203 1204 p = ns_print((struct sockaddr *)&work); 1205 if (strncmp("0H.", p, 3) == 0) 1206 p += 3; 1207 return(p); 1208 } 1209 #endif 1210 1211 void 1212 upHex(char *p0) 1213 { 1214 char *p = p0; 1215 1216 for (; *p; p++) 1217 switch (*p) { 1218 1219 case 'a': 1220 case 'b': 1221 case 'c': 1222 case 'd': 1223 case 'e': 1224 case 'f': 1225 *p += ('A' - 'a'); 1226 break; 1227 } 1228 } 1229 1230 static const char * 1231 labelops(struct rtentry *rt) 1232 { 1233 const char *lops[] = { "push", "pop", "swap", "pop all" }; 1234 static char buffer[100]; 1235 char *cp = buffer; 1236 struct sockaddr_mpls *smpls; 1237 int i; 1238 1239 for (i=0; i<MPLS_MAXLOPS; ++i) { 1240 1241 if (rt->rt_shim[i] == NULL) 1242 break; 1243 if (i>0) { 1244 cp += snprintf(cp, 1245 sizeof(buffer) - (cp - buffer), 1246 ", "); 1247 } 1248 smpls = (struct sockaddr_mpls *)kgetsa(rt->rt_shim[i]); 1249 if (smpls->smpls_op != MPLSLOP_POP && 1250 smpls->smpls_op != MPLSLOP_POPALL){ 1251 cp += snprintf(cp, 1252 sizeof(buffer) - (cp - buffer), 1253 "%s %d", 1254 lops[smpls->smpls_op - 1], 1255 ntohl(smpls->smpls_label)); 1256 } else { 1257 cp += snprintf(cp, 1258 sizeof(buffer) - (cp - buffer), 1259 "%s", 1260 lops[smpls->smpls_op - 1]); 1261 } 1262 } 1263 1264 return (buffer); 1265 } 1266