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 */ 36 37 #include <sys/kinfo.h> 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 <netgraph/socket/ng_socket.h> 52 53 #include <netproto/mpls/mpls.h> 54 55 #include <sys/sysctl.h> 56 57 #include <arpa/inet.h> 58 #include <libutil.h> 59 #include <netdb.h> 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <unistd.h> 64 #include <err.h> 65 #include <time.h> 66 #include <kinfo.h> 67 #include "netstat.h" 68 69 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 70 71 72 /* alignment constraint for routing socket */ 73 #define ROUNDUP(a) \ 74 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 75 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 76 77 /* 78 * Definitions for showing gateway flags. 79 */ 80 struct bits { 81 u_long b_mask; 82 char b_val; 83 } bits[] = { 84 { RTF_UP, 'U' }, 85 { RTF_GATEWAY, 'G' }, 86 { RTF_HOST, 'H' }, 87 { RTF_REJECT, 'R' }, 88 { RTF_DYNAMIC, 'D' }, 89 { RTF_MODIFIED, 'M' }, 90 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 91 { RTF_CLONING, 'C' }, 92 { RTF_XRESOLVE, 'X' }, 93 { RTF_LLINFO, 'L' }, 94 { RTF_STATIC, 'S' }, 95 { RTF_PROTO1, '1' }, 96 { RTF_PROTO2, '2' }, 97 { RTF_WASCLONED,'W' }, 98 { RTF_PRCLONING,'c' }, 99 { RTF_PROTO3, '3' }, 100 { RTF_BLACKHOLE,'B' }, 101 { RTF_BROADCAST,'b' }, 102 { RTF_MPLSOPS, 'm' }, 103 { 0, 0 } 104 }; 105 106 typedef union { 107 long dummy; /* Helps align structure. */ 108 struct sockaddr u_sa; 109 u_short u_data[128]; 110 } sa_u; 111 112 static sa_u pt_u; 113 114 int do_rtent = 0; 115 struct rtentry rtentry; 116 struct radix_node rnode; 117 struct radix_mask rmask; 118 struct radix_node_head *rt_tables[AF_MAX+1]; 119 120 int NewTree = 0; 121 122 static struct sockaddr *kgetsa (struct sockaddr *); 123 static void size_cols (int ef, struct radix_node *rn); 124 static void size_cols_tree (struct radix_node *rn); 125 static void size_cols_rtentry (struct rtentry *rt); 126 static void p_tree (struct radix_node *); 127 static void p_rtnode (void); 128 static void ntreestuff (void); 129 static void np_rtentry (struct rt_msghdr *); 130 static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 131 static const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, 132 int flags); 133 static void p_flags (int, const char *); 134 static const char *fmt_flags(int f); 135 static void p_rtentry (struct rtentry *); 136 static u_long forgemask (u_long); 137 static void domask (char *, u_long, u_long); 138 static const char *labelops(struct rtentry *); 139 140 /* 141 * Print routing tables. 142 */ 143 void 144 routepr(u_long rtree) 145 { 146 struct radix_node_head *rnh, head; 147 int i; 148 149 printf("Routing tables\n"); 150 151 if (Aflag == 0 && NewTree) { 152 ntreestuff(); 153 } else { 154 if (rtree == 0) { 155 printf("rt_tables: symbol not in namelist\n"); 156 return; 157 } 158 if (cpuflag >= 0) { 159 /* 160 * Severe hack. 161 */ 162 rtree += cpuflag * (AF_MAX + 1) * sizeof(void *); 163 } 164 kget(rtree, rt_tables); 165 for (i = 0; i <= AF_MAX; i++) { 166 if ((rnh = rt_tables[i]) == 0) 167 continue; 168 kget(rnh, head); 169 if (i == AF_UNSPEC) { 170 if (Aflag && af == 0) { 171 printf("Netmasks:\n"); 172 p_tree(head.rnh_treetop); 173 } 174 } else if (af == AF_UNSPEC || af == i) { 175 size_cols(i, head.rnh_treetop); 176 pr_family(i); 177 do_rtent = 1; 178 pr_rthdr(i); 179 p_tree(head.rnh_treetop); 180 } 181 } 182 } 183 } 184 185 /* 186 * Print address family header before a section of the routing table. 187 */ 188 void 189 pr_family(int af1) 190 { 191 const char *afname; 192 193 switch (af1) { 194 case AF_INET: 195 afname = "Internet"; 196 break; 197 #ifdef INET6 198 case AF_INET6: 199 afname = "Internet6"; 200 break; 201 #endif /*INET6*/ 202 case AF_IPX: 203 afname = "IPX"; 204 break; 205 case AF_ISO: 206 afname = "ISO"; 207 break; 208 case AF_CCITT: 209 afname = "X.25"; 210 break; 211 case AF_NETGRAPH: 212 afname = "Netgraph"; 213 break; 214 case AF_MPLS: 215 afname = "MPLS"; 216 break; 217 default: 218 afname = NULL; 219 break; 220 } 221 if (afname) 222 printf("\n%s:\n", afname); 223 else 224 printf("\nProtocol Family %d:\n", af1); 225 } 226 227 /* column widths; each followed by one space */ 228 #ifndef INET6 229 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 230 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 231 #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 232 #else 233 #define WID_DST_DEFAULT(af) \ 234 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 235 #define WID_GW_DEFAULT(af) \ 236 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 237 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 :6)) 238 #endif /*INET6*/ 239 240 static int wid_dst; 241 static int wid_gw; 242 static int wid_flags; 243 static int wid_refs; 244 static int wid_use; 245 static int wid_mtu; 246 static int wid_if; 247 static int wid_expire; 248 static int wid_mplslops; 249 static int wid_msl; 250 251 static void 252 size_cols(int ef, struct radix_node *rn) 253 { 254 wid_dst = WID_DST_DEFAULT(ef); 255 wid_gw = WID_GW_DEFAULT(ef); 256 wid_flags = 6; 257 wid_refs = 6; 258 wid_use = 8; 259 wid_mtu = 6; 260 wid_if = WID_IF_DEFAULT(ef); 261 wid_expire = 6; 262 wid_mplslops = 7; 263 wid_msl = 7; 264 265 if (Wflag) 266 size_cols_tree(rn); 267 } 268 269 static void 270 size_cols_tree(struct radix_node *rn) 271 { 272 again: 273 kget(rn, rnode); 274 if (rnode.rn_bit < 0) { 275 if ((rnode.rn_flags & RNF_ROOT) == 0) { 276 kget(rn, rtentry); 277 size_cols_rtentry(&rtentry); 278 } 279 if ((rn = rnode.rn_dupedkey)) 280 goto again; 281 } else { 282 rn = rnode.rn_right; 283 size_cols_tree(rnode.rn_left); 284 size_cols_tree(rn); 285 } 286 } 287 288 static void 289 size_cols_rtentry(struct rtentry *rt) 290 { 291 static struct ifnet ifnet, *lastif; 292 struct rtentry parent; 293 static char buffer[100]; 294 const char *bp; 295 struct sockaddr *sa; 296 sa_u addr, mask; 297 int len; 298 299 /* 300 * Don't print protocol-cloned routes unless -a. 301 */ 302 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 303 kget(rt->rt_parent, parent); 304 if (parent.rt_flags & RTF_PRCLONING) 305 return; 306 } 307 308 bzero(&addr, sizeof(addr)); 309 if ((sa = kgetsa(rt_key(rt)))) 310 bcopy(sa, &addr, sa->sa_len); 311 bzero(&mask, sizeof(mask)); 312 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 313 bcopy(sa, &mask, sa->sa_len); 314 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 315 len = strlen(bp); 316 wid_dst = MAX(len, wid_dst); 317 318 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 319 len = strlen(bp); 320 wid_gw = MAX(len, wid_gw); 321 322 bp = fmt_flags(rt->rt_flags); 323 len = strlen(bp); 324 wid_flags = MAX(len, wid_flags); 325 326 if (addr.u_sa.sa_family == AF_INET || Wflag) { 327 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); 328 wid_refs = MAX(len, wid_refs); 329 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 330 wid_use = MAX(len, wid_use); 331 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 332 len = snprintf(buffer, sizeof(buffer), 333 "%lu", rt->rt_rmx.rmx_mtu); 334 wid_mtu = MAX(len, wid_mtu); 335 } 336 } 337 if (rt->rt_ifp) { 338 if (rt->rt_ifp != lastif) { 339 kget(rt->rt_ifp, ifnet); 340 lastif = rt->rt_ifp; 341 len = strlen(ifnet.if_xname); 342 wid_if = MAX(len, wid_if); 343 } 344 if (rt->rt_rmx.rmx_expire) { 345 time_t expire_time; 346 347 if ((expire_time = 348 rt->rt_rmx.rmx_expire - time(NULL)) > 0) { 349 snprintf(buffer, sizeof(buffer), "%d", 350 (int)expire_time); 351 wid_expire = MAX(len, wid_expire); 352 } 353 } 354 } 355 if (Wflag) { 356 if (rt->rt_shim[0] != NULL) { 357 len = strlen(labelops(rt)); 358 wid_mplslops = MAX(len, wid_mplslops); 359 } 360 361 if (rt->rt_rmx.rmx_msl) { 362 len = snprintf(buffer, sizeof(buffer), 363 "%lu", rt->rt_rmx.rmx_msl); 364 wid_msl = MAX(len, wid_msl); 365 } 366 } 367 } 368 369 370 /* 371 * Print header for routing table columns. 372 */ 373 void 374 pr_rthdr(int af1) 375 { 376 377 if (Aflag) 378 printf("%-8.8s ","Address"); 379 if (af1 == AF_INET || Wflag) { 380 if (Wflag) { 381 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s %*s %-*s %*s\n", 382 wid_dst, wid_dst, "Destination", 383 wid_gw, wid_gw, "Gateway", 384 wid_flags, wid_flags, "Flags", 385 wid_refs, wid_refs, "Refs", 386 wid_use, wid_use, "Use", 387 wid_mtu, wid_mtu, "Mtu", 388 wid_if, wid_if, "Netif", 389 wid_expire, "Expire", 390 wid_mplslops, "Labelops", 391 wid_msl, "Msl"); 392 } else { 393 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 394 wid_dst, wid_dst, "Destination", 395 wid_gw, wid_gw, "Gateway", 396 wid_flags, wid_flags, "Flags", 397 wid_refs, wid_refs, "Refs", 398 wid_use, wid_use, "Use", 399 wid_if, wid_if, "Netif", 400 wid_expire, "Expire"); 401 } 402 } else { 403 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 404 wid_dst, wid_dst, "Destination", 405 wid_gw, wid_gw, "Gateway", 406 wid_flags, wid_flags, "Flags", 407 wid_if, wid_if, "Netif", 408 wid_expire, "Expire"); 409 } 410 } 411 412 static struct sockaddr * 413 kgetsa(struct sockaddr *dst) 414 { 415 416 kget(dst, pt_u.u_sa); 417 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 418 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 419 return (&pt_u.u_sa); 420 } 421 422 static void 423 p_tree(struct radix_node *rn) 424 { 425 426 again: 427 kget(rn, rnode); 428 if (rnode.rn_bit < 0) { 429 if (Aflag) 430 printf("%-8.8lx ", (u_long)rn); 431 if (rnode.rn_flags & RNF_ROOT) { 432 if (Aflag) 433 printf("(root node)%s", 434 rnode.rn_dupedkey ? " =>\n" : "\n"); 435 } else if (do_rtent) { 436 kget(rn, rtentry); 437 p_rtentry(&rtentry); 438 if (Aflag) 439 p_rtnode(); 440 } else { 441 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 442 NULL, 0, 44); 443 putchar('\n'); 444 } 445 if ((rn = rnode.rn_dupedkey)) 446 goto again; 447 } else { 448 if (Aflag && do_rtent) { 449 printf("%-8.8lx ", (u_long)rn); 450 p_rtnode(); 451 } 452 rn = rnode.rn_right; 453 p_tree(rnode.rn_left); 454 p_tree(rn); 455 } 456 } 457 458 char nbuf[20]; 459 460 static void 461 p_rtnode(void) 462 { 463 struct radix_mask *rm = rnode.rn_mklist; 464 465 if (rnode.rn_bit < 0) { 466 if (rnode.rn_mask) { 467 printf("\t mask "); 468 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 469 NULL, 0, -1); 470 } else if (rm == 0) 471 return; 472 } else { 473 sprintf(nbuf, "(%d)", rnode.rn_bit); 474 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 475 } 476 while (rm) { 477 kget(rm, rmask); 478 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 479 printf(" mk = %8.8lx {(%d),%s", 480 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 481 if (rmask.rm_flags & RNF_NORMAL) { 482 struct radix_node rnode_aux; 483 printf(" <normal>, "); 484 kget(rmask.rm_leaf, rnode_aux); 485 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 486 NULL, 0, -1); 487 } else 488 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 489 NULL, 0, -1); 490 putchar('}'); 491 if ((rm = rmask.rm_next)) 492 printf(" ->"); 493 } 494 putchar('\n'); 495 } 496 497 static void 498 ntreestuff(void) 499 { 500 size_t needed; 501 int mib[7]; 502 int miblen; 503 char *buf, *next, *lim; 504 struct rt_msghdr *rtm; 505 506 mib[0] = CTL_NET; 507 mib[1] = PF_ROUTE; 508 mib[2] = 0; 509 mib[3] = 0; 510 mib[4] = NET_RT_DUMP; 511 mib[5] = 0; 512 if (cpuflag >= 0) { 513 mib[6] = cpuflag; 514 miblen = 7; 515 } else { 516 miblen = 6; 517 } 518 if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0) { 519 err(1, "sysctl: net.route.0.0.dump estimate"); 520 } 521 522 if ((buf = malloc(needed)) == 0) { 523 err(2, "malloc(%lu)", (unsigned long)needed); 524 } 525 if (sysctl(mib, miblen, buf, &needed, NULL, 0) < 0) { 526 err(1, "sysctl: net.route.0.0.dump"); 527 } 528 lim = buf + needed; 529 for (next = buf; next < lim; next += rtm->rtm_msglen) { 530 rtm = (struct rt_msghdr *)next; 531 np_rtentry(rtm); 532 } 533 } 534 535 static void 536 np_rtentry(struct rt_msghdr *rtm) 537 { 538 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 539 #ifdef notdef 540 static int masks_done, banner_printed; 541 #endif 542 static int old_af; 543 int af1 = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 544 545 #ifdef notdef 546 /* for the moment, netmasks are skipped over */ 547 if (!banner_printed) { 548 printf("Netmasks:\n"); 549 banner_printed = 1; 550 } 551 if (masks_done == 0) { 552 if (rtm->rtm_addrs != RTA_DST ) { 553 masks_done = 1; 554 af1 = sa->sa_family; 555 } 556 } else 557 #endif 558 af1 = sa->sa_family; 559 if (af1 != old_af) { 560 pr_family(af1); 561 old_af = af1; 562 } 563 if (rtm->rtm_addrs == RTA_DST) 564 p_sockaddr(sa, NULL, 0, 36); 565 else { 566 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 567 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 568 p_sockaddr(sa, NULL, 0, 18); 569 } 570 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 571 putchar('\n'); 572 } 573 574 static void 575 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 576 { 577 const char *cp; 578 579 cp = fmt_sockaddr(sa, mask, flags); 580 581 if (width < 0 ) 582 printf("%s ", cp); 583 else { 584 if (numeric_addr) 585 printf("%-*s ", width, cp); 586 else 587 printf("%-*.*s ", width, width, cp); 588 } 589 } 590 591 static const char * 592 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 593 { 594 static char workbuf[128]; 595 const char *cp = workbuf; 596 597 switch(sa->sa_family) { 598 case AF_INET: 599 { 600 struct sockaddr_in *sin = (struct sockaddr_in *)sa; 601 602 if ((sin->sin_addr.s_addr == INADDR_ANY) && 603 mask && 604 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 605 ==0L) 606 cp = "default" ; 607 else if (flags & RTF_HOST) 608 cp = routename(sin->sin_addr.s_addr); 609 else if (mask) 610 cp = netname(sin->sin_addr.s_addr, 611 ntohl(((struct sockaddr_in *)mask) 612 ->sin_addr.s_addr)); 613 else 614 cp = netname(sin->sin_addr.s_addr, 0L); 615 break; 616 } 617 618 #ifdef INET6 619 case AF_INET6: 620 { 621 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 622 struct in6_addr *in6 = &sa6->sin6_addr; 623 624 /* 625 * XXX: This is a special workaround for KAME kernels. 626 * sin6_scope_id field of SA should be set in the future. 627 */ 628 if (IN6_IS_ADDR_LINKLOCAL(in6) || 629 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 630 /* XXX: override is ok? */ 631 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 632 *(u_short *)&in6->s6_addr[2] = 0; 633 } 634 635 if (flags & RTF_HOST) 636 cp = routename6(sa6); 637 else if (mask) 638 cp = netname6(sa6, 639 &((struct sockaddr_in6 *)mask)->sin6_addr); 640 else { 641 cp = netname6(sa6, NULL); 642 } 643 break; 644 } 645 #endif /*INET6*/ 646 647 case AF_IPX: 648 { 649 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 650 if (ipx_nullnet(satoipx_addr(work))) 651 cp = "default"; 652 else 653 cp = ipx_print(sa); 654 break; 655 } 656 case AF_NETGRAPH: 657 { 658 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 659 break; 660 } 661 case AF_LINK: 662 { 663 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 664 665 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 666 sdl->sdl_slen == 0) 667 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 668 else 669 switch (sdl->sdl_type) { 670 671 case IFT_ETHER: 672 case IFT_L2VLAN: 673 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 674 cp = ether_ntoa((struct ether_addr *) 675 (sdl->sdl_data + sdl->sdl_nlen)); 676 break; 677 } 678 /* FALLTHROUGH */ 679 default: 680 cp = link_ntoa(sdl); 681 break; 682 } 683 break; 684 } 685 686 case AF_MPLS: 687 { 688 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; 689 690 (void) sprintf(workbuf, "%d", ntohl(smpls->smpls_label)); 691 break; 692 } 693 694 default: 695 { 696 u_char *s = (u_char *)sa->sa_data, *slim; 697 char *cq, *cqlim; 698 699 cq = workbuf; 700 slim = sa->sa_len + (u_char *) sa; 701 cqlim = cq + sizeof(workbuf) - 6; 702 cq += sprintf(cq, "(%d)", sa->sa_family); 703 while (s < slim && cq < cqlim) { 704 cq += sprintf(cq, " %02x", *s++); 705 if (s < slim) 706 cq += sprintf(cq, "%02x", *s++); 707 } 708 cp = workbuf; 709 } 710 } 711 712 return (cp); 713 } 714 715 static void 716 p_flags(int f, const char *format) 717 { 718 printf(format, fmt_flags(f)); 719 } 720 721 static const char * 722 fmt_flags(int f) 723 { 724 static char name[33]; 725 char *flags; 726 struct bits *p = bits; 727 728 for (flags = name; p->b_mask; p++) 729 if (p->b_mask & f) 730 *flags++ = p->b_val; 731 *flags = '\0'; 732 return (name); 733 } 734 735 static void 736 p_rtentry(struct rtentry *rt) 737 { 738 static struct ifnet ifnet, *lastif; 739 struct rtentry parent; 740 static char buffer[128]; 741 static char prettyname[128]; 742 struct sockaddr *sa; 743 sa_u addr, mask; 744 745 /* 746 * Don't print protocol-cloned routes unless -a. 747 */ 748 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 749 kget(rt->rt_parent, parent); 750 if (parent.rt_flags & RTF_PRCLONING) 751 return; 752 } 753 754 bzero(&addr, sizeof(addr)); 755 if ((sa = kgetsa(rt_key(rt)))) 756 bcopy(sa, &addr, sa->sa_len); 757 bzero(&mask, sizeof(mask)); 758 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 759 bcopy(sa, &mask, sa->sa_len); 760 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 761 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 762 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 763 p_flags(rt->rt_flags, buffer); 764 if (addr.u_sa.sa_family == AF_INET || Wflag) { 765 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 766 wid_use, rt->rt_use); 767 if (Wflag) { 768 if (rt->rt_rmx.rmx_mtu != 0) 769 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 770 else 771 printf("%*s ", wid_mtu, ""); 772 } 773 } 774 if (rt->rt_ifp) { 775 if (rt->rt_ifp != lastif) { 776 kget(rt->rt_ifp, ifnet); 777 lastif = rt->rt_ifp; 778 strlcpy(prettyname, ifnet.if_xname, sizeof(prettyname)); 779 } 780 printf("%*.*s", wid_if, wid_if, prettyname); 781 if (rt->rt_rmx.rmx_expire) { 782 time_t expire_time; 783 784 if ((expire_time = 785 rt->rt_rmx.rmx_expire - time(NULL)) > 0) 786 printf(" %*d", wid_expire, (int)expire_time); 787 else 788 printf("%*s ", wid_expire, ""); 789 } else { 790 printf("%*s ", wid_expire, ""); 791 } 792 if (rt->rt_nodes[0].rn_dupedkey) 793 printf(" =>"); 794 } 795 if (Wflag) { 796 if (rt->rt_shim[0] != NULL) 797 printf(" %-*s", wid_mplslops, labelops(rt)); 798 else 799 printf(" %-*s", wid_mplslops, ""); 800 if (rt->rt_rmx.rmx_msl != 0) 801 printf(" %*lu", wid_msl, rt->rt_rmx.rmx_msl); 802 else 803 printf(" %*s", wid_msl, ""); 804 } 805 putchar('\n'); 806 } 807 808 char * 809 routename(u_long in) 810 { 811 char *cp; 812 static char line[MAXHOSTNAMELEN]; 813 struct hostent *hp; 814 815 cp = 0; 816 if (!numeric_addr) { 817 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET); 818 if (hp) { 819 cp = hp->h_name; 820 trimdomain(cp, strlen(cp)); 821 } 822 } 823 if (cp) { 824 strncpy(line, cp, sizeof(line) - 1); 825 line[sizeof(line) - 1] = '\0'; 826 } else { 827 #define C(x) ((x) & 0xff) 828 in = ntohl(in); 829 sprintf(line, "%lu.%lu.%lu.%lu", 830 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 831 } 832 return (line); 833 } 834 835 static u_long 836 forgemask(u_long a) 837 { 838 u_long m; 839 840 if (IN_CLASSA(a)) 841 m = IN_CLASSA_NET; 842 else if (IN_CLASSB(a)) 843 m = IN_CLASSB_NET; 844 else 845 m = IN_CLASSC_NET; 846 return (m); 847 } 848 849 static void 850 domask(char *dst, u_long addr, u_long mask) 851 { 852 int b, i; 853 854 if (!mask || (forgemask(addr) == mask)) { 855 *dst = '\0'; 856 return; 857 } 858 i = 0; 859 for (b = 0; b < 32; b++) 860 if (mask & (1 << b)) { 861 int bb; 862 863 i = b; 864 for (bb = b+1; bb < 32; bb++) 865 if (!(mask & (1 << bb))) { 866 i = -1; /* noncontig */ 867 break; 868 } 869 break; 870 } 871 if (i == -1) 872 sprintf(dst, "&0x%lx", mask); 873 else 874 sprintf(dst, "/%d", 32-i); 875 } 876 877 /* 878 * Return the name of the network whose address is given. 879 * The address is assumed to be that of a net or subnet, not a host. 880 */ 881 char * 882 netname(u_long in, u_long mask) 883 { 884 char *cp = 0; 885 static char line[MAXHOSTNAMELEN]; 886 struct netent *np = 0; 887 u_long dmask; 888 u_long i; 889 890 #define NSHIFT(m) ( \ 891 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 892 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 893 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 894 0) 895 896 i = ntohl(in); 897 dmask = forgemask(i); 898 if (!numeric_addr && i) { 899 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 900 if (np == NULL && mask == 0) 901 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 902 if (np != NULL) { 903 cp = np->n_name; 904 trimdomain(cp, strlen(cp)); 905 } 906 } 907 #undef NSHIFT 908 if (cp != NULL) { 909 strncpy(line, cp, sizeof(line) - 1); 910 line[sizeof(line) - 1] = '\0'; 911 } else { 912 if (mask <= IN_CLASSA_NET && 913 (i & IN_CLASSA_HOST) == 0) { 914 sprintf(line, "%lu", C(i >> 24)); 915 } else if (mask <= IN_CLASSB_NET && 916 (i & IN_CLASSB_HOST) == 0) { 917 sprintf(line, "%lu.%lu", 918 C(i >> 24), C(i >> 16)); 919 } else if (mask <= IN_CLASSC_NET && 920 (i & IN_CLASSC_HOST) == 0) { 921 sprintf(line, "%lu.%lu.%lu", 922 C(i >> 24), C(i >> 16), C(i >> 8)); 923 } else { 924 sprintf(line, "%lu.%lu.%lu.%lu", 925 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 926 } 927 } 928 domask(line + strlen(line), i, mask); 929 return (line); 930 } 931 932 #ifdef INET6 933 const char * 934 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 935 { 936 static char line[MAXHOSTNAMELEN]; 937 u_char *p = (u_char *)mask; 938 u_char *lim; 939 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 940 941 if (mask) { 942 for (masklen = 0, lim = p + 16; p < lim; p++) { 943 switch (*p) { 944 case 0xff: 945 masklen += 8; 946 break; 947 case 0xfe: 948 masklen += 7; 949 break; 950 case 0xfc: 951 masklen += 6; 952 break; 953 case 0xf8: 954 masklen += 5; 955 break; 956 case 0xf0: 957 masklen += 4; 958 break; 959 case 0xe0: 960 masklen += 3; 961 break; 962 case 0xc0: 963 masklen += 2; 964 break; 965 case 0x80: 966 masklen += 1; 967 break; 968 case 0x00: 969 break; 970 default: 971 illegal ++; 972 break; 973 } 974 } 975 if (illegal) 976 fprintf(stderr, "illegal prefixlen\n"); 977 } 978 else 979 masklen = 128; 980 981 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 982 return("default"); 983 984 if (numeric_addr) 985 flag |= NI_NUMERICHOST; 986 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 987 NULL, 0, flag); 988 989 if (numeric_addr) 990 sprintf(&line[strlen(line)], "/%d", masklen); 991 992 return line; 993 } 994 995 char * 996 routename6(struct sockaddr_in6 *sa6) 997 { 998 static char line[MAXHOSTNAMELEN]; 999 int flag = NI_WITHSCOPEID; 1000 /* use local variable for safety */ 1001 struct sockaddr_in6 sa6_local; 1002 1003 sa6_local.sin6_family = AF_INET6; 1004 sa6_local.sin6_len = sizeof(sa6_local); 1005 sa6_local.sin6_addr = sa6->sin6_addr; 1006 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 1007 1008 if (numeric_addr) 1009 flag |= NI_NUMERICHOST; 1010 1011 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 1012 line, sizeof(line), NULL, 0, flag); 1013 1014 return line; 1015 } 1016 #endif /*INET6*/ 1017 1018 /* 1019 * Print routing statistics 1020 */ 1021 void 1022 rt_stats(void) 1023 { 1024 struct rtstatistics rts; 1025 int error = 0; 1026 1027 error = kinfo_get_net_rtstatistics(&rts); 1028 if (error) { 1029 printf("routing: could not retrieve statistics\n"); 1030 return; 1031 } 1032 printf("routing:\n"); 1033 1034 #define p(f, m) if (rts.f || sflag <= 1) \ 1035 printf(m, rts.f, plural(rts.f)) 1036 1037 p(rts_badredirect, "\t%lu bad routing redirect%s\n"); 1038 p(rts_dynamic, "\t%lu dynamically created route%s\n"); 1039 p(rts_newgateway, "\t%lu new gateway%s due to redirects\n"); 1040 p(rts_unreach, "\t%lu destination%s found unreachable\n"); 1041 p(rts_wildcard, "\t%lu use%s of a wildcard route\n"); 1042 #undef p 1043 } 1044 1045 char * 1046 ipx_print(struct sockaddr *sa) 1047 { 1048 u_short port; 1049 struct servent *sp = 0; 1050 const char *net = "", *host = ""; 1051 char *p; 1052 u_char *q; 1053 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1054 static char mybuf[50]; 1055 char cport[10], chost[15], cnet[15]; 1056 1057 port = ntohs(work.x_port); 1058 1059 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1060 1061 if (port) { 1062 if (sp) 1063 sprintf(mybuf, "*.%s", sp->s_name); 1064 else 1065 sprintf(mybuf, "*.%x", port); 1066 } else 1067 sprintf(mybuf, "*.*"); 1068 1069 return (mybuf); 1070 } 1071 1072 if (ipx_wildnet(work)) 1073 net = "any"; 1074 else if (ipx_nullnet(work)) 1075 net = "*"; 1076 else { 1077 q = work.x_net.c_net; 1078 sprintf(cnet, "%02x%02x%02x%02x", 1079 q[0], q[1], q[2], q[3]); 1080 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1081 continue; 1082 net = p; 1083 } 1084 1085 if (ipx_wildhost(work)) 1086 host = "any"; 1087 else if (ipx_nullhost(work)) 1088 host = "*"; 1089 else { 1090 q = work.x_host.c_host; 1091 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1092 q[0], q[1], q[2], q[3], q[4], q[5]); 1093 for (p = chost; *p == '0' && p < chost + 12; p++) 1094 continue; 1095 host = p; 1096 } 1097 1098 if (port) { 1099 if (strcmp(host, "*") == 0) 1100 host = ""; 1101 if (sp) 1102 snprintf(cport, sizeof(cport), 1103 "%s%s", *host ? "." : "", sp->s_name); 1104 else 1105 snprintf(cport, sizeof(cport), 1106 "%s%x", *host ? "." : "", port); 1107 } else 1108 *cport = 0; 1109 1110 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1111 return(mybuf); 1112 } 1113 1114 char * 1115 ipx_phost(struct sockaddr *sa) 1116 { 1117 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1118 struct sockaddr_ipx work; 1119 static union ipx_net ipx_zeronet; 1120 char *p; 1121 struct ipx_addr in; 1122 1123 work = *sipx; 1124 in = work.sipx_addr; 1125 1126 work.sipx_addr.x_port = 0; 1127 work.sipx_addr.x_net = ipx_zeronet; 1128 p = ipx_print((struct sockaddr *)&work); 1129 if (strncmp("*.", p, 2) == 0) p += 2; 1130 1131 return(p); 1132 } 1133 1134 void 1135 upHex(char *p0) 1136 { 1137 char *p = p0; 1138 1139 for (; *p; p++) 1140 switch (*p) { 1141 1142 case 'a': 1143 case 'b': 1144 case 'c': 1145 case 'd': 1146 case 'e': 1147 case 'f': 1148 *p += ('A' - 'a'); 1149 break; 1150 } 1151 } 1152 1153 static const char * 1154 labelops(struct rtentry *rt) 1155 { 1156 const char *lops[] = { "push", "pop", "swap", "pop all" }; 1157 static char buffer[100]; 1158 char *cp = buffer; 1159 struct sockaddr_mpls *smpls; 1160 int i; 1161 1162 for (i=0; i<MPLS_MAXLOPS; ++i) { 1163 1164 if (rt->rt_shim[i] == NULL) 1165 break; 1166 if (i>0) { 1167 cp += snprintf(cp, 1168 sizeof(buffer) - (cp - buffer), 1169 ", "); 1170 } 1171 smpls = (struct sockaddr_mpls *)kgetsa(rt->rt_shim[i]); 1172 if (smpls->smpls_op != MPLSLOP_POP && 1173 smpls->smpls_op != MPLSLOP_POPALL){ 1174 cp += snprintf(cp, 1175 sizeof(buffer) - (cp - buffer), 1176 "%s %d", 1177 lops[smpls->smpls_op - 1], 1178 ntohl(smpls->smpls_label)); 1179 } else { 1180 cp += snprintf(cp, 1181 sizeof(buffer) - (cp - buffer), 1182 "%s", 1183 lops[smpls->smpls_op - 1]); 1184 } 1185 } 1186 1187 return (buffer); 1188 } 1189