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/socket.h> 40 #include <sys/time.h> 41 42 #include <net/ethernet.h> 43 #include <net/if.h> 44 #include <net/if_var.h> 45 #include <net/if_dl.h> 46 #include <net/if_types.h> 47 #include <net/route.h> 48 49 #include <netinet/in.h> 50 #include <netipx/ipx.h> 51 #include <netatalk/at.h> 52 #include <netgraph/socket/ng_socket.h> 53 54 #ifdef NS 55 #include <netns/ns.h> 56 #endif 57 58 #include <netproto/mpls/mpls.h> 59 60 #include <sys/sysctl.h> 61 62 #include <arpa/inet.h> 63 #include <libutil.h> 64 #include <netdb.h> 65 #include <stdio.h> 66 #include <stdlib.h> 67 #include <string.h> 68 #include <unistd.h> 69 #include <err.h> 70 #include <time.h> 71 #include <kinfo.h> 72 #include "netstat.h" 73 74 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 75 76 77 /* alignment constraint for routing socket */ 78 #define ROUNDUP(a) \ 79 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 80 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 81 82 /* 83 * Definitions for showing gateway flags. 84 */ 85 struct bits { 86 u_long b_mask; 87 char b_val; 88 } bits[] = { 89 { RTF_UP, 'U' }, 90 { RTF_GATEWAY, 'G' }, 91 { RTF_HOST, 'H' }, 92 { RTF_REJECT, 'R' }, 93 { RTF_DYNAMIC, 'D' }, 94 { RTF_MODIFIED, 'M' }, 95 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 96 { RTF_CLONING, 'C' }, 97 { RTF_XRESOLVE, 'X' }, 98 { RTF_LLINFO, 'L' }, 99 { RTF_STATIC, 'S' }, 100 { RTF_PROTO1, '1' }, 101 { RTF_PROTO2, '2' }, 102 { RTF_WASCLONED,'W' }, 103 { RTF_PRCLONING,'c' }, 104 { RTF_PROTO3, '3' }, 105 { RTF_BLACKHOLE,'B' }, 106 { RTF_BROADCAST,'b' }, 107 { RTF_MPLSOPS, 'm' }, 108 { 0, 0 } 109 }; 110 111 typedef union { 112 long dummy; /* Helps align structure. */ 113 struct sockaddr u_sa; 114 u_short u_data[128]; 115 } sa_u; 116 117 static sa_u pt_u; 118 119 int do_rtent = 0; 120 struct rtentry rtentry; 121 struct radix_node rnode; 122 struct radix_mask rmask; 123 struct radix_node_head *rt_tables[AF_MAX+1]; 124 125 int NewTree = 0; 126 127 static struct sockaddr *kgetsa (struct sockaddr *); 128 static void size_cols (int ef, struct radix_node *rn); 129 static void size_cols_tree (struct radix_node *rn); 130 static void size_cols_rtentry (struct rtentry *rt); 131 static void p_tree (struct radix_node *); 132 static void p_rtnode (void); 133 static void ntreestuff (void); 134 static void np_rtentry (struct rt_msghdr *); 135 static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 136 static const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, 137 int flags); 138 static void p_flags (int, const char *); 139 static const char *fmt_flags(int f); 140 static void p_rtentry (struct rtentry *); 141 static u_long forgemask (u_long); 142 static void domask (char *, u_long, u_long); 143 static const char *labelops(struct rtentry *); 144 145 /* 146 * Print routing tables. 147 */ 148 void 149 routepr(u_long rtree) 150 { 151 struct radix_node_head *rnh, head; 152 int i; 153 154 printf("Routing tables\n"); 155 156 if (Aflag == 0 && NewTree) { 157 ntreestuff(); 158 } else { 159 if (rtree == 0) { 160 printf("rt_tables: symbol not in namelist\n"); 161 return; 162 } 163 if (cpuflag >= 0) { 164 /* 165 * Severe hack. 166 */ 167 rtree += cpuflag * (AF_MAX + 1) * sizeof(void *); 168 } 169 kget(rtree, rt_tables); 170 for (i = 0; i <= AF_MAX; i++) { 171 if ((rnh = rt_tables[i]) == 0) 172 continue; 173 kget(rnh, head); 174 if (i == AF_UNSPEC) { 175 if (Aflag && af == 0) { 176 printf("Netmasks:\n"); 177 p_tree(head.rnh_treetop); 178 } 179 } else if (af == AF_UNSPEC || af == i) { 180 size_cols(i, head.rnh_treetop); 181 pr_family(i); 182 do_rtent = 1; 183 pr_rthdr(i); 184 p_tree(head.rnh_treetop); 185 } 186 } 187 } 188 } 189 190 /* 191 * Print address family header before a section of the routing table. 192 */ 193 void 194 pr_family(int af1) 195 { 196 const char *afname; 197 198 switch (af1) { 199 case AF_INET: 200 afname = "Internet"; 201 break; 202 #ifdef INET6 203 case AF_INET6: 204 afname = "Internet6"; 205 break; 206 #endif /*INET6*/ 207 case AF_IPX: 208 afname = "IPX"; 209 break; 210 #ifdef NS 211 case AF_NS: 212 afname = "XNS"; 213 break; 214 #endif 215 case AF_ISO: 216 afname = "ISO"; 217 break; 218 case AF_APPLETALK: 219 afname = "AppleTalk"; 220 break; 221 case AF_CCITT: 222 afname = "X.25"; 223 break; 224 case AF_NETGRAPH: 225 afname = "Netgraph"; 226 break; 227 case AF_MPLS: 228 afname = "MPLS"; 229 break; 230 default: 231 afname = NULL; 232 break; 233 } 234 if (afname) 235 printf("\n%s:\n", afname); 236 else 237 printf("\nProtocol Family %d:\n", af1); 238 } 239 240 /* column widths; each followed by one space */ 241 #ifndef INET6 242 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 243 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 244 #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 245 #else 246 #define WID_DST_DEFAULT(af) \ 247 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 248 #define WID_GW_DEFAULT(af) \ 249 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 250 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 :6)) 251 #endif /*INET6*/ 252 253 static int wid_dst; 254 static int wid_gw; 255 static int wid_flags; 256 static int wid_refs; 257 static int wid_use; 258 static int wid_mtu; 259 static int wid_if; 260 static int wid_expire; 261 static int wid_mplslops; 262 263 static void 264 size_cols(int ef, struct radix_node *rn) 265 { 266 wid_dst = WID_DST_DEFAULT(ef); 267 wid_gw = WID_GW_DEFAULT(ef); 268 wid_flags = 6; 269 wid_refs = 6; 270 wid_use = 8; 271 wid_mtu = 6; 272 wid_if = WID_IF_DEFAULT(ef); 273 wid_expire = 6; 274 wid_mplslops = 7; 275 276 if (Wflag) 277 size_cols_tree(rn); 278 } 279 280 static void 281 size_cols_tree(struct radix_node *rn) 282 { 283 again: 284 kget(rn, rnode); 285 if (rnode.rn_bit < 0) { 286 if ((rnode.rn_flags & RNF_ROOT) == 0) { 287 kget(rn, rtentry); 288 size_cols_rtentry(&rtentry); 289 } 290 if ((rn = rnode.rn_dupedkey)) 291 goto again; 292 } else { 293 rn = rnode.rn_right; 294 size_cols_tree(rnode.rn_left); 295 size_cols_tree(rn); 296 } 297 } 298 299 static void 300 size_cols_rtentry(struct rtentry *rt) 301 { 302 static struct ifnet ifnet, *lastif; 303 struct rtentry parent; 304 static char buffer[100]; 305 const char *bp; 306 struct sockaddr *sa; 307 sa_u addr, mask; 308 int len; 309 310 /* 311 * Don't print protocol-cloned routes unless -a. 312 */ 313 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 314 kget(rt->rt_parent, parent); 315 if (parent.rt_flags & RTF_PRCLONING) 316 return; 317 } 318 319 bzero(&addr, sizeof(addr)); 320 if ((sa = kgetsa(rt_key(rt)))) 321 bcopy(sa, &addr, sa->sa_len); 322 bzero(&mask, sizeof(mask)); 323 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 324 bcopy(sa, &mask, sa->sa_len); 325 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 326 len = strlen(bp); 327 wid_dst = MAX(len, wid_dst); 328 329 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 330 len = strlen(bp); 331 wid_gw = MAX(len, wid_gw); 332 333 bp = fmt_flags(rt->rt_flags); 334 len = strlen(bp); 335 wid_flags = MAX(len, wid_flags); 336 337 if (addr.u_sa.sa_family == AF_INET || Wflag) { 338 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); 339 wid_refs = MAX(len, wid_refs); 340 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 341 wid_use = MAX(len, wid_use); 342 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 343 len = snprintf(buffer, sizeof(buffer), 344 "%lu", rt->rt_rmx.rmx_mtu); 345 wid_mtu = MAX(len, wid_mtu); 346 } 347 } 348 if (rt->rt_ifp) { 349 if (rt->rt_ifp != lastif) { 350 kget(rt->rt_ifp, ifnet); 351 lastif = rt->rt_ifp; 352 len = strlen(ifnet.if_xname); 353 wid_if = MAX(len, wid_if); 354 } 355 if (rt->rt_rmx.rmx_expire) { 356 time_t expire_time; 357 358 if ((expire_time = 359 rt->rt_rmx.rmx_expire - time(NULL)) > 0) { 360 snprintf(buffer, sizeof(buffer), "%d", 361 (int)expire_time); 362 wid_expire = MAX(len, wid_expire); 363 } 364 } 365 } 366 if (rt->rt_shim[0] != NULL) 367 len = strlen(labelops(rt)); 368 wid_mplslops = MAX(len, wid_mplslops); 369 } 370 371 372 /* 373 * Print header for routing table columns. 374 */ 375 void 376 pr_rthdr(int af1) 377 { 378 379 if (Aflag) 380 printf("%-8.8s ","Address"); 381 if (af1 == AF_INET || Wflag) { 382 if (Wflag) { 383 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s %*s %-*s\n", 384 wid_dst, wid_dst, "Destination", 385 wid_gw, wid_gw, "Gateway", 386 wid_flags, wid_flags, "Flags", 387 wid_refs, wid_refs, "Refs", 388 wid_use, wid_use, "Use", 389 wid_mtu, wid_mtu, "Mtu", 390 wid_if, wid_if, "Netif", 391 wid_expire, "Expire", 392 wid_mplslops, "Labelops"); 393 } else { 394 printf("%-*.*s %-*.*s %-*.*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_if, wid_if, "Netif", 401 wid_expire, "Expire"); 402 } 403 } else { 404 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 405 wid_dst, wid_dst, "Destination", 406 wid_gw, wid_gw, "Gateway", 407 wid_flags, wid_flags, "Flags", 408 wid_if, wid_if, "Netif", 409 wid_expire, "Expire"); 410 } 411 } 412 413 static struct sockaddr * 414 kgetsa(struct sockaddr *dst) 415 { 416 417 kget(dst, pt_u.u_sa); 418 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 419 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 420 return (&pt_u.u_sa); 421 } 422 423 static void 424 p_tree(struct radix_node *rn) 425 { 426 427 again: 428 kget(rn, rnode); 429 if (rnode.rn_bit < 0) { 430 if (Aflag) 431 printf("%-8.8lx ", (u_long)rn); 432 if (rnode.rn_flags & RNF_ROOT) { 433 if (Aflag) 434 printf("(root node)%s", 435 rnode.rn_dupedkey ? " =>\n" : "\n"); 436 } else if (do_rtent) { 437 kget(rn, rtentry); 438 p_rtentry(&rtentry); 439 if (Aflag) 440 p_rtnode(); 441 } else { 442 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 443 NULL, 0, 44); 444 putchar('\n'); 445 } 446 if ((rn = rnode.rn_dupedkey)) 447 goto again; 448 } else { 449 if (Aflag && do_rtent) { 450 printf("%-8.8lx ", (u_long)rn); 451 p_rtnode(); 452 } 453 rn = rnode.rn_right; 454 p_tree(rnode.rn_left); 455 p_tree(rn); 456 } 457 } 458 459 char nbuf[20]; 460 461 static void 462 p_rtnode(void) 463 { 464 struct radix_mask *rm = rnode.rn_mklist; 465 466 if (rnode.rn_bit < 0) { 467 if (rnode.rn_mask) { 468 printf("\t mask "); 469 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 470 NULL, 0, -1); 471 } else if (rm == 0) 472 return; 473 } else { 474 sprintf(nbuf, "(%d)", rnode.rn_bit); 475 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 476 } 477 while (rm) { 478 kget(rm, rmask); 479 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 480 printf(" mk = %8.8lx {(%d),%s", 481 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 482 if (rmask.rm_flags & RNF_NORMAL) { 483 struct radix_node rnode_aux; 484 printf(" <normal>, "); 485 kget(rmask.rm_leaf, rnode_aux); 486 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 487 NULL, 0, -1); 488 } else 489 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 490 NULL, 0, -1); 491 putchar('}'); 492 if ((rm = rmask.rm_next)) 493 printf(" ->"); 494 } 495 putchar('\n'); 496 } 497 498 static void 499 ntreestuff(void) 500 { 501 size_t needed; 502 int mib[7]; 503 int miblen; 504 char *buf, *next, *lim; 505 struct rt_msghdr *rtm; 506 507 mib[0] = CTL_NET; 508 mib[1] = PF_ROUTE; 509 mib[2] = 0; 510 mib[3] = 0; 511 mib[4] = NET_RT_DUMP; 512 mib[5] = 0; 513 if (cpuflag >= 0) { 514 mib[6] = cpuflag; 515 miblen = 7; 516 } else { 517 miblen = 6; 518 } 519 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0) { 520 err(1, "sysctl: net.route.0.0.dump estimate"); 521 } 522 523 if ((buf = malloc(needed)) == 0) { 524 err(2, "malloc(%lu)", (unsigned long)needed); 525 } 526 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0) { 527 err(1, "sysctl: net.route.0.0.dump"); 528 } 529 lim = buf + needed; 530 for (next = buf; next < lim; next += rtm->rtm_msglen) { 531 rtm = (struct rt_msghdr *)next; 532 np_rtentry(rtm); 533 } 534 } 535 536 static void 537 np_rtentry(struct rt_msghdr *rtm) 538 { 539 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 540 #ifdef notdef 541 static int masks_done, banner_printed; 542 #endif 543 static int old_af; 544 int af1 = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 545 546 #ifdef notdef 547 /* for the moment, netmasks are skipped over */ 548 if (!banner_printed) { 549 printf("Netmasks:\n"); 550 banner_printed = 1; 551 } 552 if (masks_done == 0) { 553 if (rtm->rtm_addrs != RTA_DST ) { 554 masks_done = 1; 555 af1 = sa->sa_family; 556 } 557 } else 558 #endif 559 af1 = sa->sa_family; 560 if (af1 != old_af) { 561 pr_family(af1); 562 old_af = af1; 563 } 564 if (rtm->rtm_addrs == RTA_DST) 565 p_sockaddr(sa, NULL, 0, 36); 566 else { 567 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 568 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 569 p_sockaddr(sa, NULL, 0, 18); 570 } 571 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 572 putchar('\n'); 573 } 574 575 static void 576 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 577 { 578 const char *cp; 579 580 cp = fmt_sockaddr(sa, mask, flags); 581 582 if (width < 0 ) 583 printf("%s ", cp); 584 else { 585 if (numeric_addr) 586 printf("%-*s ", width, cp); 587 else 588 printf("%-*.*s ", width, width, cp); 589 } 590 } 591 592 static const char * 593 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 594 { 595 static char workbuf[128]; 596 const char *cp = workbuf; 597 598 switch(sa->sa_family) { 599 case AF_INET: 600 { 601 struct sockaddr_in *sin = (struct sockaddr_in *)sa; 602 603 if ((sin->sin_addr.s_addr == INADDR_ANY) && 604 mask && 605 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 606 ==0L) 607 cp = "default" ; 608 else if (flags & RTF_HOST) 609 cp = routename(sin->sin_addr.s_addr); 610 else if (mask) 611 cp = netname(sin->sin_addr.s_addr, 612 ntohl(((struct sockaddr_in *)mask) 613 ->sin_addr.s_addr)); 614 else 615 cp = netname(sin->sin_addr.s_addr, 0L); 616 break; 617 } 618 619 #ifdef INET6 620 case AF_INET6: 621 { 622 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 623 struct in6_addr *in6 = &sa6->sin6_addr; 624 625 /* 626 * XXX: This is a special workaround for KAME kernels. 627 * sin6_scope_id field of SA should be set in the future. 628 */ 629 if (IN6_IS_ADDR_LINKLOCAL(in6) || 630 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 631 /* XXX: override is ok? */ 632 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 633 *(u_short *)&in6->s6_addr[2] = 0; 634 } 635 636 if (flags & RTF_HOST) 637 cp = routename6(sa6); 638 else if (mask) 639 cp = netname6(sa6, 640 &((struct sockaddr_in6 *)mask)->sin6_addr); 641 else { 642 cp = netname6(sa6, NULL); 643 } 644 break; 645 } 646 #endif /*INET6*/ 647 648 case AF_IPX: 649 { 650 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 651 if (ipx_nullnet(satoipx_addr(work))) 652 cp = "default"; 653 else 654 cp = ipx_print(sa); 655 break; 656 } 657 case AF_APPLETALK: 658 { 659 if (!(flags & RTF_HOST) && mask) 660 cp = atalk_print2(sa,mask,9); 661 else 662 cp = atalk_print(sa,11); 663 break; 664 } 665 case AF_NETGRAPH: 666 { 667 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 668 break; 669 } 670 #ifdef NS 671 case AF_NS: 672 cp = ns_print(sa); 673 break; 674 #endif 675 676 case AF_LINK: 677 { 678 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 679 680 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 681 sdl->sdl_slen == 0) 682 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 683 else 684 switch (sdl->sdl_type) { 685 686 case IFT_ETHER: 687 case IFT_L2VLAN: 688 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 689 cp = ether_ntoa((struct ether_addr *) 690 (sdl->sdl_data + sdl->sdl_nlen)); 691 break; 692 } 693 /* FALLTHROUGH */ 694 default: 695 cp = link_ntoa(sdl); 696 break; 697 } 698 break; 699 } 700 701 case AF_MPLS: 702 { 703 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; 704 705 (void) sprintf(workbuf, "%d", ntohl(smpls->smpls_label)); 706 break; 707 } 708 709 default: 710 { 711 u_char *s = (u_char *)sa->sa_data, *slim; 712 char *cq, *cqlim; 713 714 cq = workbuf; 715 slim = sa->sa_len + (u_char *) sa; 716 cqlim = cq + sizeof(workbuf) - 6; 717 cq += sprintf(cq, "(%d)", sa->sa_family); 718 while (s < slim && cq < cqlim) { 719 cq += sprintf(cq, " %02x", *s++); 720 if (s < slim) 721 cq += sprintf(cq, "%02x", *s++); 722 } 723 cp = workbuf; 724 } 725 } 726 727 return (cp); 728 } 729 730 static void 731 p_flags(int f, const 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 const 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; 1009 1010 sa6_local.sin6_family = AF_INET6; 1011 sa6_local.sin6_len = sizeof(sa6_local); 1012 sa6_local.sin6_addr = sa6->sin6_addr; 1013 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 1014 1015 if (numeric_addr) 1016 flag |= NI_NUMERICHOST; 1017 1018 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 1019 line, sizeof(line), NULL, 0, flag); 1020 1021 return line; 1022 } 1023 #endif /*INET6*/ 1024 1025 /* 1026 * Print routing statistics 1027 */ 1028 void 1029 rt_stats(void) 1030 { 1031 struct rtstatistics rts; 1032 int error = 0; 1033 1034 error = kinfo_get_net_rtstatistics(&rts); 1035 if (error) { 1036 printf("routing: could not retrieve statistics\n"); 1037 return; 1038 } 1039 printf("routing:\n"); 1040 1041 #define p(f, m) if (rts.f || sflag <= 1) \ 1042 printf(m, rts.f, plural(rts.f)) 1043 1044 p(rts_badredirect, "\t%lu bad routing redirect%s\n"); 1045 p(rts_dynamic, "\t%lu dynamically created route%s\n"); 1046 p(rts_newgateway, "\t%lu new gateway%s due to redirects\n"); 1047 p(rts_unreach, "\t%lu destination%s found unreachable\n"); 1048 p(rts_wildcard, "\t%lu use%s of a wildcard route\n"); 1049 #undef p 1050 } 1051 1052 char * 1053 ipx_print(struct sockaddr *sa) 1054 { 1055 u_short port; 1056 struct servent *sp = 0; 1057 const char *net = "", *host = ""; 1058 char *p; 1059 u_char *q; 1060 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1061 static char mybuf[50]; 1062 char cport[10], chost[15], cnet[15]; 1063 1064 port = ntohs(work.x_port); 1065 1066 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1067 1068 if (port) { 1069 if (sp) 1070 sprintf(mybuf, "*.%s", sp->s_name); 1071 else 1072 sprintf(mybuf, "*.%x", port); 1073 } else 1074 sprintf(mybuf, "*.*"); 1075 1076 return (mybuf); 1077 } 1078 1079 if (ipx_wildnet(work)) 1080 net = "any"; 1081 else if (ipx_nullnet(work)) 1082 net = "*"; 1083 else { 1084 q = work.x_net.c_net; 1085 sprintf(cnet, "%02x%02x%02x%02x", 1086 q[0], q[1], q[2], q[3]); 1087 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1088 continue; 1089 net = p; 1090 } 1091 1092 if (ipx_wildhost(work)) 1093 host = "any"; 1094 else if (ipx_nullhost(work)) 1095 host = "*"; 1096 else { 1097 q = work.x_host.c_host; 1098 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1099 q[0], q[1], q[2], q[3], q[4], q[5]); 1100 for (p = chost; *p == '0' && p < chost + 12; p++) 1101 continue; 1102 host = p; 1103 } 1104 1105 if (port) { 1106 if (strcmp(host, "*") == 0) 1107 host = ""; 1108 if (sp) 1109 snprintf(cport, sizeof(cport), 1110 "%s%s", *host ? "." : "", sp->s_name); 1111 else 1112 snprintf(cport, sizeof(cport), 1113 "%s%x", *host ? "." : "", port); 1114 } else 1115 *cport = 0; 1116 1117 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1118 return(mybuf); 1119 } 1120 1121 char * 1122 ipx_phost(struct sockaddr *sa) 1123 { 1124 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1125 struct sockaddr_ipx work; 1126 static union ipx_net ipx_zeronet; 1127 char *p; 1128 struct ipx_addr in; 1129 1130 work = *sipx; 1131 in = work.sipx_addr; 1132 1133 work.sipx_addr.x_port = 0; 1134 work.sipx_addr.x_net = ipx_zeronet; 1135 p = ipx_print((struct sockaddr *)&work); 1136 if (strncmp("*.", p, 2) == 0) p += 2; 1137 1138 return(p); 1139 } 1140 1141 #ifdef NS 1142 short ns_nullh[] = {0,0,0}; 1143 short ns_bh[] = {-1,-1,-1}; 1144 1145 char * 1146 ns_print(struct sockaddr *sa) 1147 { 1148 struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 1149 struct ns_addr work; 1150 union { union ns_net net_e; u_long long_e; } net; 1151 u_short port; 1152 static char mybuf[50], cport[10], chost[25]; 1153 char *host = ""; 1154 char *p; u_char *q; 1155 1156 work = sns->sns_addr; 1157 port = ntohs(work.x_port); 1158 work.x_port = 0; 1159 net.net_e = work.x_net; 1160 if (ns_nullhost(work) && net.long_e == 0) { 1161 if (port ) { 1162 sprintf(mybuf, "*.%xH", port); 1163 upHex(mybuf); 1164 } else 1165 sprintf(mybuf, "*.*"); 1166 return (mybuf); 1167 } 1168 1169 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) { 1170 host = "any"; 1171 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 1172 host = "*"; 1173 } else { 1174 q = work.x_host.c_host; 1175 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 1176 q[0], q[1], q[2], q[3], q[4], q[5]); 1177 for (p = chost; *p == '0' && p < chost + 12; p++) 1178 continue; 1179 host = p; 1180 } 1181 if (port) 1182 sprintf(cport, ".%xH", htons(port)); 1183 else 1184 *cport = 0; 1185 1186 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport); 1187 upHex(mybuf); 1188 return(mybuf); 1189 } 1190 1191 char * 1192 ns_phost(struct sockaddr *sa) 1193 { 1194 struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 1195 struct sockaddr_ns work; 1196 static union ns_net ns_zeronet; 1197 char *p; 1198 1199 work = *sns; 1200 work.sns_addr.x_port = 0; 1201 work.sns_addr.x_net = ns_zeronet; 1202 1203 p = ns_print((struct sockaddr *)&work); 1204 if (strncmp("0H.", p, 3) == 0) 1205 p += 3; 1206 return(p); 1207 } 1208 #endif 1209 1210 void 1211 upHex(char *p0) 1212 { 1213 char *p = p0; 1214 1215 for (; *p; p++) 1216 switch (*p) { 1217 1218 case 'a': 1219 case 'b': 1220 case 'c': 1221 case 'd': 1222 case 'e': 1223 case 'f': 1224 *p += ('A' - 'a'); 1225 break; 1226 } 1227 } 1228 1229 static const char * 1230 labelops(struct rtentry *rt) 1231 { 1232 const char *lops[] = { "push", "pop", "swap", "pop all" }; 1233 static char buffer[100]; 1234 char *cp = buffer; 1235 struct sockaddr_mpls *smpls; 1236 int i; 1237 1238 for (i=0; i<MPLS_MAXLOPS; ++i) { 1239 1240 if (rt->rt_shim[i] == NULL) 1241 break; 1242 if (i>0) { 1243 cp += snprintf(cp, 1244 sizeof(buffer) - (cp - buffer), 1245 ", "); 1246 } 1247 smpls = (struct sockaddr_mpls *)kgetsa(rt->rt_shim[i]); 1248 if (smpls->smpls_op != MPLSLOP_POP && 1249 smpls->smpls_op != MPLSLOP_POPALL){ 1250 cp += snprintf(cp, 1251 sizeof(buffer) - (cp - buffer), 1252 "%s %d", 1253 lops[smpls->smpls_op - 1], 1254 ntohl(smpls->smpls_label)); 1255 } else { 1256 cp += snprintf(cp, 1257 sizeof(buffer) - (cp - buffer), 1258 "%s", 1259 lops[smpls->smpls_op - 1]); 1260 } 1261 } 1262 1263 return (buffer); 1264 } 1265