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/param.h> 39 #include <sys/protosw.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 } 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, 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 af) 196 { 197 char *afname; 198 199 switch (af) { 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", af); 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, i; 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 af) 378 { 379 380 if (Aflag) 381 printf("%-8.8s ","Address"); 382 if (af == 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 af = 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 af = sa->sa_family; 557 } 558 } else 559 #endif 560 af = sa->sa_family; 561 if (af != old_af) { 562 pr_family(af); 563 old_af = af; 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 char *cplim; 598 char *cp = workbuf; 599 600 switch(sa->sa_family) { 601 case AF_INET: 602 { 603 struct sockaddr_in *sin = (struct sockaddr_in *)sa; 604 605 if ((sin->sin_addr.s_addr == INADDR_ANY) && 606 mask && 607 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 608 ==0L) 609 cp = "default" ; 610 else if (flags & RTF_HOST) 611 cp = routename(sin->sin_addr.s_addr); 612 else if (mask) 613 cp = netname(sin->sin_addr.s_addr, 614 ntohl(((struct sockaddr_in *)mask) 615 ->sin_addr.s_addr)); 616 else 617 cp = netname(sin->sin_addr.s_addr, 0L); 618 break; 619 } 620 621 #ifdef INET6 622 case AF_INET6: 623 { 624 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 625 struct in6_addr *in6 = &sa6->sin6_addr; 626 627 /* 628 * XXX: This is a special workaround for KAME kernels. 629 * sin6_scope_id field of SA should be set in the future. 630 */ 631 if (IN6_IS_ADDR_LINKLOCAL(in6) || 632 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 633 /* XXX: override is ok? */ 634 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 635 *(u_short *)&in6->s6_addr[2] = 0; 636 } 637 638 if (flags & RTF_HOST) 639 cp = routename6(sa6); 640 else if (mask) 641 cp = netname6(sa6, 642 &((struct sockaddr_in6 *)mask)->sin6_addr); 643 else { 644 cp = netname6(sa6, NULL); 645 } 646 break; 647 } 648 #endif /*INET6*/ 649 650 case AF_IPX: 651 { 652 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 653 if (ipx_nullnet(satoipx_addr(work))) 654 cp = "default"; 655 else 656 cp = ipx_print(sa); 657 break; 658 } 659 case AF_APPLETALK: 660 { 661 if (!(flags & RTF_HOST) && mask) 662 cp = atalk_print2(sa,mask,9); 663 else 664 cp = atalk_print(sa,11); 665 break; 666 } 667 case AF_NETGRAPH: 668 { 669 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 670 break; 671 } 672 #ifdef NS 673 case AF_NS: 674 cp = ns_print(sa); 675 break; 676 #endif 677 678 case AF_LINK: 679 { 680 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 681 682 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 683 sdl->sdl_slen == 0) 684 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 685 else 686 switch (sdl->sdl_type) { 687 688 case IFT_ETHER: 689 case IFT_L2VLAN: 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; 714 715 slim = sa->sa_len + (u_char *) sa; 716 cplim = cp + sizeof(workbuf) - 6; 717 cp += sprintf(cp, "(%d)", sa->sa_family); 718 while (s < slim && cp < cplim) { 719 cp += sprintf(cp, " %02x", *s++); 720 if (s < slim) 721 cp += sprintf(cp, "%02x", *s++); 722 } 723 cp = workbuf; 724 } 725 } 726 727 return (cp); 728 } 729 730 static void 731 p_flags(int f, char *format) 732 { 733 printf(format, fmt_flags(f)); 734 } 735 736 static const char * 737 fmt_flags(int f) 738 { 739 static char name[33]; 740 char *flags; 741 struct bits *p = bits; 742 743 for (flags = name; p->b_mask; p++) 744 if (p->b_mask & f) 745 *flags++ = p->b_val; 746 *flags = '\0'; 747 return (name); 748 } 749 750 static void 751 p_rtentry(struct rtentry *rt) 752 { 753 static struct ifnet ifnet, *lastif; 754 struct rtentry parent; 755 static char buffer[128]; 756 static char prettyname[128]; 757 struct sockaddr *sa; 758 sa_u addr, mask; 759 760 /* 761 * Don't print protocol-cloned routes unless -a. 762 */ 763 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 764 kget(rt->rt_parent, parent); 765 if (parent.rt_flags & RTF_PRCLONING) 766 return; 767 } 768 769 bzero(&addr, sizeof(addr)); 770 if ((sa = kgetsa(rt_key(rt)))) 771 bcopy(sa, &addr, sa->sa_len); 772 bzero(&mask, sizeof(mask)); 773 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 774 bcopy(sa, &mask, sa->sa_len); 775 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 776 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 777 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 778 p_flags(rt->rt_flags, buffer); 779 if (addr.u_sa.sa_family == AF_INET || Wflag) { 780 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 781 wid_use, rt->rt_use); 782 if (Wflag) { 783 if (rt->rt_rmx.rmx_mtu != 0) 784 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 785 else 786 printf("%*s ", wid_mtu, ""); 787 } 788 } 789 if (rt->rt_ifp) { 790 if (rt->rt_ifp != lastif) { 791 kget(rt->rt_ifp, ifnet); 792 lastif = rt->rt_ifp; 793 strlcpy(prettyname, ifnet.if_xname, sizeof(prettyname)); 794 } 795 printf("%*.*s", wid_if, wid_if, prettyname); 796 if (rt->rt_rmx.rmx_expire) { 797 time_t expire_time; 798 799 if ((expire_time = 800 rt->rt_rmx.rmx_expire - time(NULL)) > 0) 801 printf(" %*d", wid_expire, (int)expire_time); 802 } else { 803 printf("%*s ", wid_expire, ""); 804 } 805 if (rt->rt_nodes[0].rn_dupedkey) 806 printf(" =>"); 807 } 808 if (Wflag) { 809 if (rt->rt_shim[0] != NULL) 810 printf(" %-*s", wid_mplslops, labelops(rt)); 811 } 812 putchar('\n'); 813 } 814 815 char * 816 routename(u_long in) 817 { 818 char *cp; 819 static char line[MAXHOSTNAMELEN]; 820 struct hostent *hp; 821 822 cp = 0; 823 if (!numeric_addr) { 824 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET); 825 if (hp) { 826 cp = hp->h_name; 827 trimdomain(cp, strlen(cp)); 828 } 829 } 830 if (cp) { 831 strncpy(line, cp, sizeof(line) - 1); 832 line[sizeof(line) - 1] = '\0'; 833 } else { 834 #define C(x) ((x) & 0xff) 835 in = ntohl(in); 836 sprintf(line, "%lu.%lu.%lu.%lu", 837 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 838 } 839 return (line); 840 } 841 842 static u_long 843 forgemask(u_long a) 844 { 845 u_long m; 846 847 if (IN_CLASSA(a)) 848 m = IN_CLASSA_NET; 849 else if (IN_CLASSB(a)) 850 m = IN_CLASSB_NET; 851 else 852 m = IN_CLASSC_NET; 853 return (m); 854 } 855 856 static void 857 domask(char *dst, u_long addr, u_long mask) 858 { 859 int b, i; 860 861 if (!mask || (forgemask(addr) == mask)) { 862 *dst = '\0'; 863 return; 864 } 865 i = 0; 866 for (b = 0; b < 32; b++) 867 if (mask & (1 << b)) { 868 int bb; 869 870 i = b; 871 for (bb = b+1; bb < 32; bb++) 872 if (!(mask & (1 << bb))) { 873 i = -1; /* noncontig */ 874 break; 875 } 876 break; 877 } 878 if (i == -1) 879 sprintf(dst, "&0x%lx", mask); 880 else 881 sprintf(dst, "/%d", 32-i); 882 } 883 884 /* 885 * Return the name of the network whose address is given. 886 * The address is assumed to be that of a net or subnet, not a host. 887 */ 888 char * 889 netname(u_long in, u_long mask) 890 { 891 char *cp = 0; 892 static char line[MAXHOSTNAMELEN]; 893 struct netent *np = 0; 894 u_long dmask; 895 u_long i; 896 897 #define NSHIFT(m) ( \ 898 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 899 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 900 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 901 0) 902 903 i = ntohl(in); 904 dmask = forgemask(i); 905 if (!numeric_addr && i) { 906 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 907 if (np == NULL && mask == 0) 908 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 909 if (np != NULL) { 910 cp = np->n_name; 911 trimdomain(cp, strlen(cp)); 912 } 913 } 914 #undef NSHIFT 915 if (cp != NULL) { 916 strncpy(line, cp, sizeof(line) - 1); 917 line[sizeof(line) - 1] = '\0'; 918 } else { 919 if (mask <= IN_CLASSA_NET && 920 (i & IN_CLASSA_HOST) == 0) { 921 sprintf(line, "%lu", C(i >> 24)); 922 } else if (mask <= IN_CLASSB_NET && 923 (i & IN_CLASSB_HOST) == 0) { 924 sprintf(line, "%lu.%lu", 925 C(i >> 24), C(i >> 16)); 926 } else if (mask <= IN_CLASSC_NET && 927 (i & IN_CLASSC_HOST) == 0) { 928 sprintf(line, "%lu.%lu.%lu", 929 C(i >> 24), C(i >> 16), C(i >> 8)); 930 } else { 931 sprintf(line, "%lu.%lu.%lu.%lu", 932 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 933 } 934 } 935 domask(line + strlen(line), i, mask); 936 return (line); 937 } 938 939 #ifdef INET6 940 char * 941 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 942 { 943 static char line[MAXHOSTNAMELEN]; 944 u_char *p = (u_char *)mask; 945 u_char *lim; 946 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 947 948 if (mask) { 949 for (masklen = 0, lim = p + 16; p < lim; p++) { 950 switch (*p) { 951 case 0xff: 952 masklen += 8; 953 break; 954 case 0xfe: 955 masklen += 7; 956 break; 957 case 0xfc: 958 masklen += 6; 959 break; 960 case 0xf8: 961 masklen += 5; 962 break; 963 case 0xf0: 964 masklen += 4; 965 break; 966 case 0xe0: 967 masklen += 3; 968 break; 969 case 0xc0: 970 masklen += 2; 971 break; 972 case 0x80: 973 masklen += 1; 974 break; 975 case 0x00: 976 break; 977 default: 978 illegal ++; 979 break; 980 } 981 } 982 if (illegal) 983 fprintf(stderr, "illegal prefixlen\n"); 984 } 985 else 986 masklen = 128; 987 988 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 989 return("default"); 990 991 if (numeric_addr) 992 flag |= NI_NUMERICHOST; 993 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 994 NULL, 0, flag); 995 996 if (numeric_addr) 997 sprintf(&line[strlen(line)], "/%d", masklen); 998 999 return line; 1000 } 1001 1002 char * 1003 routename6(struct sockaddr_in6 *sa6) 1004 { 1005 static char line[MAXHOSTNAMELEN]; 1006 int flag = NI_WITHSCOPEID; 1007 /* use local variable for safety */ 1008 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),}; 1009 1010 sa6_local.sin6_addr = sa6->sin6_addr; 1011 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 1012 1013 if (numeric_addr) 1014 flag |= NI_NUMERICHOST; 1015 1016 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 1017 line, sizeof(line), NULL, 0, flag); 1018 1019 return line; 1020 } 1021 #endif /*INET6*/ 1022 1023 /* 1024 * Print routing statistics 1025 */ 1026 void 1027 rt_stats(void) 1028 { 1029 struct rtstatistics rts; 1030 int error = 0; 1031 1032 error = kinfo_get_net_rtstatistics(&rts); 1033 if (error) { 1034 printf("routing: could not retrieve statistics\n"); 1035 return; 1036 } 1037 printf("routing:\n"); 1038 1039 #define p(f, m) if (rts.f || sflag <= 1) \ 1040 printf(m, rts.f, plural(rts.f)) 1041 1042 p(rts_badredirect, "\t%lu bad routing redirect%s\n"); 1043 p(rts_dynamic, "\t%lu dynamically created route%s\n"); 1044 p(rts_newgateway, "\t%lu new gateway%s due to redirects\n"); 1045 p(rts_unreach, "\t%lu destination%s found unreachable\n"); 1046 p(rts_wildcard, "\t%lu use%s of a wildcard route\n"); 1047 #undef p 1048 } 1049 1050 char * 1051 ipx_print(struct sockaddr *sa) 1052 { 1053 u_short port; 1054 struct servent *sp = 0; 1055 char *net = "", *host = ""; 1056 char *p; 1057 u_char *q; 1058 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1059 static char mybuf[50]; 1060 char cport[10], chost[15], cnet[15]; 1061 1062 port = ntohs(work.x_port); 1063 1064 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1065 1066 if (port) { 1067 if (sp) 1068 sprintf(mybuf, "*.%s", sp->s_name); 1069 else 1070 sprintf(mybuf, "*.%x", port); 1071 } else 1072 sprintf(mybuf, "*.*"); 1073 1074 return (mybuf); 1075 } 1076 1077 if (ipx_wildnet(work)) 1078 net = "any"; 1079 else if (ipx_nullnet(work)) 1080 net = "*"; 1081 else { 1082 q = work.x_net.c_net; 1083 sprintf(cnet, "%02x%02x%02x%02x", 1084 q[0], q[1], q[2], q[3]); 1085 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1086 continue; 1087 net = p; 1088 } 1089 1090 if (ipx_wildhost(work)) 1091 host = "any"; 1092 else if (ipx_nullhost(work)) 1093 host = "*"; 1094 else { 1095 q = work.x_host.c_host; 1096 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1097 q[0], q[1], q[2], q[3], q[4], q[5]); 1098 for (p = chost; *p == '0' && p < chost + 12; p++) 1099 continue; 1100 host = p; 1101 } 1102 1103 if (port) { 1104 if (strcmp(host, "*") == 0) 1105 host = ""; 1106 if (sp) 1107 snprintf(cport, sizeof(cport), 1108 "%s%s", *host ? "." : "", sp->s_name); 1109 else 1110 snprintf(cport, sizeof(cport), 1111 "%s%x", *host ? "." : "", port); 1112 } else 1113 *cport = 0; 1114 1115 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1116 return(mybuf); 1117 } 1118 1119 char * 1120 ipx_phost(struct sockaddr *sa) 1121 { 1122 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1123 struct sockaddr_ipx work; 1124 static union ipx_net ipx_zeronet; 1125 char *p; 1126 struct ipx_addr in; 1127 1128 work = *sipx; 1129 in = work.sipx_addr; 1130 1131 work.sipx_addr.x_port = 0; 1132 work.sipx_addr.x_net = ipx_zeronet; 1133 p = ipx_print((struct sockaddr *)&work); 1134 if (strncmp("*.", p, 2) == 0) p += 2; 1135 1136 return(p); 1137 } 1138 1139 #ifdef NS 1140 short ns_nullh[] = {0,0,0}; 1141 short ns_bh[] = {-1,-1,-1}; 1142 1143 char * 1144 ns_print(struct sockaddr *sa) 1145 { 1146 struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 1147 struct ns_addr work; 1148 union { union ns_net net_e; u_long long_e; } net; 1149 u_short port; 1150 static char mybuf[50], cport[10], chost[25]; 1151 char *host = ""; 1152 char *p; u_char *q; 1153 1154 work = sns->sns_addr; 1155 port = ntohs(work.x_port); 1156 work.x_port = 0; 1157 net.net_e = work.x_net; 1158 if (ns_nullhost(work) && net.long_e == 0) { 1159 if (port ) { 1160 sprintf(mybuf, "*.%xH", port); 1161 upHex(mybuf); 1162 } else 1163 sprintf(mybuf, "*.*"); 1164 return (mybuf); 1165 } 1166 1167 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) { 1168 host = "any"; 1169 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 1170 host = "*"; 1171 } else { 1172 q = work.x_host.c_host; 1173 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 1174 q[0], q[1], q[2], q[3], q[4], q[5]); 1175 for (p = chost; *p == '0' && p < chost + 12; p++) 1176 continue; 1177 host = p; 1178 } 1179 if (port) 1180 sprintf(cport, ".%xH", htons(port)); 1181 else 1182 *cport = 0; 1183 1184 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport); 1185 upHex(mybuf); 1186 return(mybuf); 1187 } 1188 1189 char * 1190 ns_phost(struct sockaddr *sa) 1191 { 1192 struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 1193 struct sockaddr_ns work; 1194 static union ns_net ns_zeronet; 1195 char *p; 1196 1197 work = *sns; 1198 work.sns_addr.x_port = 0; 1199 work.sns_addr.x_net = ns_zeronet; 1200 1201 p = ns_print((struct sockaddr *)&work); 1202 if (strncmp("0H.", p, 3) == 0) 1203 p += 3; 1204 return(p); 1205 } 1206 #endif 1207 1208 void 1209 upHex(char *p0) 1210 { 1211 char *p = p0; 1212 1213 for (; *p; p++) 1214 switch (*p) { 1215 1216 case 'a': 1217 case 'b': 1218 case 'c': 1219 case 'd': 1220 case 'e': 1221 case 'f': 1222 *p += ('A' - 'a'); 1223 break; 1224 } 1225 } 1226 1227 static const char * 1228 labelops(struct rtentry *rt) 1229 { 1230 char *lops[] = { "push", "pop", "swap", "pop all" }; 1231 static char buffer[100]; 1232 char *cp = buffer; 1233 struct sockaddr_mpls *smpls; 1234 int i; 1235 1236 for (i=0; i<MPLS_MAXLOPS; ++i) { 1237 1238 if (rt->rt_shim[i] == NULL) 1239 break; 1240 if (i>0) { 1241 cp += snprintf(cp, 1242 sizeof(buffer) - (cp - buffer), 1243 ", "); 1244 } 1245 smpls = (struct sockaddr_mpls *)kgetsa(rt->rt_shim[i]); 1246 if (smpls->smpls_op != MPLSLOP_POP && 1247 smpls->smpls_op != MPLSLOP_POPALL){ 1248 cp += snprintf(cp, 1249 sizeof(buffer) - (cp - buffer), 1250 "%s %d", 1251 lops[smpls->smpls_op - 1], 1252 ntohl(smpls->smpls_label)); 1253 } else { 1254 cp += snprintf(cp, 1255 sizeof(buffer) - (cp - buffer), 1256 "%s", 1257 lops[smpls->smpls_op - 1]); 1258 } 1259 } 1260 1261 return (buffer); 1262 } 1263