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]) == NULL) 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 == NULL) 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)) == NULL) { 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 case IFT_CARP: 674 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 675 cp = ether_ntoa((struct ether_addr *) 676 (sdl->sdl_data + sdl->sdl_nlen)); 677 break; 678 } 679 /* FALLTHROUGH */ 680 default: 681 cp = link_ntoa(sdl); 682 break; 683 } 684 break; 685 } 686 687 case AF_MPLS: 688 { 689 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; 690 691 (void) sprintf(workbuf, "%d", ntohl(smpls->smpls_label)); 692 break; 693 } 694 695 default: 696 { 697 u_char *s = (u_char *)sa->sa_data, *slim; 698 char *cq, *cqlim; 699 700 cq = workbuf; 701 slim = sa->sa_len + (u_char *) sa; 702 cqlim = cq + sizeof(workbuf) - 6; 703 cq += sprintf(cq, "(%d)", sa->sa_family); 704 while (s < slim && cq < cqlim) { 705 cq += sprintf(cq, " %02x", *s++); 706 if (s < slim) 707 cq += sprintf(cq, "%02x", *s++); 708 } 709 cp = workbuf; 710 } 711 } 712 713 return (cp); 714 } 715 716 static void 717 p_flags(int f, const char *format) 718 { 719 printf(format, fmt_flags(f)); 720 } 721 722 static const char * 723 fmt_flags(int f) 724 { 725 static char name[33]; 726 char *flags; 727 struct bits *p = bits; 728 729 for (flags = name; p->b_mask; p++) 730 if (p->b_mask & f) 731 *flags++ = p->b_val; 732 *flags = '\0'; 733 return (name); 734 } 735 736 static void 737 p_rtentry(struct rtentry *rt) 738 { 739 static struct ifnet ifnet, *lastif; 740 struct rtentry parent; 741 static char buffer[128]; 742 static char prettyname[128]; 743 struct sockaddr *sa; 744 sa_u addr, mask; 745 746 /* 747 * Don't print protocol-cloned routes unless -a. 748 */ 749 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 750 kget(rt->rt_parent, parent); 751 if (parent.rt_flags & RTF_PRCLONING) 752 return; 753 } 754 755 bzero(&addr, sizeof(addr)); 756 if ((sa = kgetsa(rt_key(rt)))) 757 bcopy(sa, &addr, sa->sa_len); 758 bzero(&mask, sizeof(mask)); 759 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 760 bcopy(sa, &mask, sa->sa_len); 761 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 762 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 763 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 764 p_flags(rt->rt_flags, buffer); 765 if (addr.u_sa.sa_family == AF_INET || Wflag) { 766 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 767 wid_use, rt->rt_use); 768 if (Wflag) { 769 if (rt->rt_rmx.rmx_mtu != 0) 770 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 771 else 772 printf("%*s ", wid_mtu, ""); 773 } 774 } 775 if (rt->rt_ifp) { 776 if (rt->rt_ifp != lastif) { 777 kget(rt->rt_ifp, ifnet); 778 lastif = rt->rt_ifp; 779 strlcpy(prettyname, ifnet.if_xname, sizeof(prettyname)); 780 } 781 printf("%*.*s", wid_if, wid_if, prettyname); 782 if (rt->rt_rmx.rmx_expire) { 783 time_t expire_time; 784 785 if ((expire_time = 786 rt->rt_rmx.rmx_expire - time(NULL)) > 0) 787 printf(" %*d", wid_expire, (int)expire_time); 788 else 789 printf("%*s ", wid_expire, ""); 790 } else { 791 printf("%*s ", wid_expire, ""); 792 } 793 if (rt->rt_nodes[0].rn_dupedkey) 794 printf(" =>"); 795 } 796 if (Wflag) { 797 if (rt->rt_shim[0] != NULL) 798 printf(" %-*s", wid_mplslops, labelops(rt)); 799 else 800 printf(" %-*s", wid_mplslops, ""); 801 if (rt->rt_rmx.rmx_msl != 0) 802 printf(" %*lu", wid_msl, rt->rt_rmx.rmx_msl); 803 else 804 printf(" %*s", wid_msl, ""); 805 } 806 putchar('\n'); 807 } 808 809 char * 810 routename(u_long in) 811 { 812 char *cp; 813 static char line[MAXHOSTNAMELEN]; 814 struct hostent *hp; 815 816 cp = NULL; 817 if (!numeric_addr) { 818 hp = gethostbyaddr(&in, sizeof (struct in_addr), AF_INET); 819 if (hp) { 820 cp = hp->h_name; 821 trimdomain(cp, strlen(cp)); 822 } 823 } 824 if (cp) { 825 strncpy(line, cp, sizeof(line) - 1); 826 line[sizeof(line) - 1] = '\0'; 827 } else { 828 #define C(x) ((x) & 0xff) 829 in = ntohl(in); 830 sprintf(line, "%lu.%lu.%lu.%lu", 831 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 832 } 833 return (line); 834 } 835 836 static u_long 837 forgemask(u_long a) 838 { 839 u_long m; 840 841 if (IN_CLASSA(a)) 842 m = IN_CLASSA_NET; 843 else if (IN_CLASSB(a)) 844 m = IN_CLASSB_NET; 845 else 846 m = IN_CLASSC_NET; 847 return (m); 848 } 849 850 static void 851 domask(char *dst, u_long addr, u_long mask) 852 { 853 int b, i; 854 855 if (!mask || (forgemask(addr) == mask)) { 856 *dst = '\0'; 857 return; 858 } 859 i = 0; 860 for (b = 0; b < 32; b++) 861 if (mask & (1 << b)) { 862 int bb; 863 864 i = b; 865 for (bb = b+1; bb < 32; bb++) 866 if (!(mask & (1 << bb))) { 867 i = -1; /* noncontig */ 868 break; 869 } 870 break; 871 } 872 if (i == -1) 873 sprintf(dst, "&0x%lx", mask); 874 else 875 sprintf(dst, "/%d", 32-i); 876 } 877 878 /* 879 * Return the name of the network whose address is given. 880 * The address is assumed to be that of a net or subnet, not a host. 881 */ 882 char * 883 netname(u_long in, u_long mask) 884 { 885 char *cp = NULL; 886 static char line[MAXHOSTNAMELEN]; 887 struct netent *np = NULL; 888 u_long dmask; 889 u_long i; 890 891 #define NSHIFT(m) ( \ 892 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 893 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 894 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 895 0) 896 897 i = ntohl(in); 898 dmask = forgemask(i); 899 if (!numeric_addr && i) { 900 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 901 if (np == NULL && mask == 0) 902 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 903 if (np != NULL) { 904 cp = np->n_name; 905 trimdomain(cp, strlen(cp)); 906 } 907 } 908 #undef NSHIFT 909 if (cp != NULL) { 910 strncpy(line, cp, sizeof(line) - 1); 911 line[sizeof(line) - 1] = '\0'; 912 } else { 913 if (mask <= IN_CLASSA_NET && 914 (i & IN_CLASSA_HOST) == 0) { 915 sprintf(line, "%lu", C(i >> 24)); 916 } else if (mask <= IN_CLASSB_NET && 917 (i & IN_CLASSB_HOST) == 0) { 918 sprintf(line, "%lu.%lu", 919 C(i >> 24), C(i >> 16)); 920 } else if (mask <= IN_CLASSC_NET && 921 (i & IN_CLASSC_HOST) == 0) { 922 sprintf(line, "%lu.%lu.%lu", 923 C(i >> 24), C(i >> 16), C(i >> 8)); 924 } else { 925 sprintf(line, "%lu.%lu.%lu.%lu", 926 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 927 } 928 } 929 domask(line + strlen(line), i, mask); 930 return (line); 931 } 932 933 #ifdef INET6 934 const char * 935 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 936 { 937 static char line[MAXHOSTNAMELEN]; 938 u_char *p = (u_char *)mask; 939 u_char *lim; 940 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 941 942 if (mask) { 943 for (masklen = 0, lim = p + 16; p < lim; p++) { 944 switch (*p) { 945 case 0xff: 946 masklen += 8; 947 break; 948 case 0xfe: 949 masklen += 7; 950 break; 951 case 0xfc: 952 masklen += 6; 953 break; 954 case 0xf8: 955 masklen += 5; 956 break; 957 case 0xf0: 958 masklen += 4; 959 break; 960 case 0xe0: 961 masklen += 3; 962 break; 963 case 0xc0: 964 masklen += 2; 965 break; 966 case 0x80: 967 masklen += 1; 968 break; 969 case 0x00: 970 break; 971 default: 972 illegal ++; 973 break; 974 } 975 } 976 if (illegal) 977 fprintf(stderr, "illegal prefixlen\n"); 978 } 979 else 980 masklen = 128; 981 982 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 983 return("default"); 984 985 if (numeric_addr) 986 flag |= NI_NUMERICHOST; 987 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 988 NULL, 0, flag); 989 990 if (numeric_addr) 991 sprintf(&line[strlen(line)], "/%d", masklen); 992 993 return line; 994 } 995 996 char * 997 routename6(struct sockaddr_in6 *sa6) 998 { 999 static char line[MAXHOSTNAMELEN]; 1000 int flag = NI_WITHSCOPEID; 1001 /* use local variable for safety */ 1002 struct sockaddr_in6 sa6_local; 1003 1004 sa6_local.sin6_family = AF_INET6; 1005 sa6_local.sin6_len = sizeof(sa6_local); 1006 sa6_local.sin6_addr = sa6->sin6_addr; 1007 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 1008 1009 if (numeric_addr) 1010 flag |= NI_NUMERICHOST; 1011 1012 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 1013 line, sizeof(line), NULL, 0, flag); 1014 1015 return line; 1016 } 1017 #endif /*INET6*/ 1018 1019 /* 1020 * Print routing statistics 1021 */ 1022 void 1023 rt_stats(void) 1024 { 1025 struct rtstatistics rts; 1026 int error = 0; 1027 1028 error = kinfo_get_net_rtstatistics(&rts); 1029 if (error) { 1030 printf("routing: could not retrieve statistics\n"); 1031 return; 1032 } 1033 printf("routing:\n"); 1034 1035 #define p(f, m) if (rts.f || sflag <= 1) \ 1036 printf(m, rts.f, plural(rts.f)) 1037 1038 p(rts_badredirect, "\t%lu bad routing redirect%s\n"); 1039 p(rts_dynamic, "\t%lu dynamically created route%s\n"); 1040 p(rts_newgateway, "\t%lu new gateway%s due to redirects\n"); 1041 p(rts_unreach, "\t%lu destination%s found unreachable\n"); 1042 p(rts_wildcard, "\t%lu use%s of a wildcard route\n"); 1043 #undef p 1044 } 1045 1046 char * 1047 ipx_print(struct sockaddr *sa) 1048 { 1049 u_short port; 1050 struct servent *sp = NULL; 1051 const char *net = "", *host = ""; 1052 char *p; 1053 u_char *q; 1054 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1055 static char mybuf[50]; 1056 char cport[10], chost[15], cnet[15]; 1057 1058 port = ntohs(work.x_port); 1059 1060 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1061 1062 if (port) { 1063 if (sp) 1064 sprintf(mybuf, "*.%s", sp->s_name); 1065 else 1066 sprintf(mybuf, "*.%x", port); 1067 } else 1068 sprintf(mybuf, "*.*"); 1069 1070 return (mybuf); 1071 } 1072 1073 if (ipx_wildnet(work)) 1074 net = "any"; 1075 else if (ipx_nullnet(work)) 1076 net = "*"; 1077 else { 1078 q = work.x_net.c_net; 1079 sprintf(cnet, "%02x%02x%02x%02x", 1080 q[0], q[1], q[2], q[3]); 1081 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1082 continue; 1083 net = p; 1084 } 1085 1086 if (ipx_wildhost(work)) 1087 host = "any"; 1088 else if (ipx_nullhost(work)) 1089 host = "*"; 1090 else { 1091 q = work.x_host.c_host; 1092 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1093 q[0], q[1], q[2], q[3], q[4], q[5]); 1094 for (p = chost; *p == '0' && p < chost + 12; p++) 1095 continue; 1096 host = p; 1097 } 1098 1099 if (port) { 1100 if (strcmp(host, "*") == 0) 1101 host = ""; 1102 if (sp) 1103 snprintf(cport, sizeof(cport), 1104 "%s%s", *host ? "." : "", sp->s_name); 1105 else 1106 snprintf(cport, sizeof(cport), 1107 "%s%x", *host ? "." : "", port); 1108 } else 1109 *cport = 0; 1110 1111 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1112 return(mybuf); 1113 } 1114 1115 char * 1116 ipx_phost(struct sockaddr *sa) 1117 { 1118 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1119 struct sockaddr_ipx work; 1120 static union ipx_net ipx_zeronet; 1121 char *p; 1122 struct ipx_addr in; 1123 1124 work = *sipx; 1125 in = work.sipx_addr; 1126 1127 work.sipx_addr.x_port = 0; 1128 work.sipx_addr.x_net = ipx_zeronet; 1129 p = ipx_print((struct sockaddr *)&work); 1130 if (strncmp("*.", p, 2) == 0) p += 2; 1131 1132 return(p); 1133 } 1134 1135 void 1136 upHex(char *p0) 1137 { 1138 char *p = p0; 1139 1140 for (; *p; p++) 1141 switch (*p) { 1142 1143 case 'a': 1144 case 'b': 1145 case 'c': 1146 case 'd': 1147 case 'e': 1148 case 'f': 1149 *p += ('A' - 'a'); 1150 break; 1151 } 1152 } 1153 1154 static const char * 1155 labelops(struct rtentry *rt) 1156 { 1157 const char *lops[] = { "push", "pop", "swap", "pop all" }; 1158 static char buffer[100]; 1159 char *cp = buffer; 1160 struct sockaddr_mpls *smpls; 1161 int i; 1162 1163 for (i=0; i<MPLS_MAXLOPS; ++i) { 1164 1165 if (rt->rt_shim[i] == NULL) 1166 break; 1167 if (i>0) { 1168 cp += snprintf(cp, 1169 sizeof(buffer) - (cp - buffer), 1170 ", "); 1171 } 1172 smpls = (struct sockaddr_mpls *)kgetsa(rt->rt_shim[i]); 1173 if (smpls->smpls_op != MPLSLOP_POP && 1174 smpls->smpls_op != MPLSLOP_POPALL){ 1175 cp += snprintf(cp, 1176 sizeof(buffer) - (cp - buffer), 1177 "%s %d", 1178 lops[smpls->smpls_op - 1], 1179 ntohl(smpls->smpls_label)); 1180 } else { 1181 cp += snprintf(cp, 1182 sizeof(buffer) - (cp - buffer), 1183 "%s", 1184 lops[smpls->smpls_op - 1]); 1185 } 1186 } 1187 1188 return (buffer); 1189 } 1190