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 1.9 2005/05/01 04:05:35 hmp 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 <sys/sysctl.h> 60 61 #include <arpa/inet.h> 62 #include <libutil.h> 63 #include <netdb.h> 64 #include <stdio.h> 65 #include <stdlib.h> 66 #include <string.h> 67 #include <unistd.h> 68 #include <err.h> 69 #include <time.h> 70 #include <kinfo.h> 71 #include "netstat.h" 72 73 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 74 75 76 /* alignment constraint for routing socket */ 77 #define ROUNDUP(a) \ 78 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 79 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 80 81 /* 82 * Definitions for showing gateway flags. 83 */ 84 struct bits { 85 u_long b_mask; 86 char b_val; 87 } bits[] = { 88 { RTF_UP, 'U' }, 89 { RTF_GATEWAY, 'G' }, 90 { RTF_HOST, 'H' }, 91 { RTF_REJECT, 'R' }, 92 { RTF_DYNAMIC, 'D' }, 93 { RTF_MODIFIED, 'M' }, 94 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 95 { RTF_CLONING, 'C' }, 96 { RTF_XRESOLVE, 'X' }, 97 { RTF_LLINFO, 'L' }, 98 { RTF_STATIC, 'S' }, 99 { RTF_PROTO1, '1' }, 100 { RTF_PROTO2, '2' }, 101 { RTF_WASCLONED,'W' }, 102 { RTF_PRCLONING,'c' }, 103 { RTF_PROTO3, '3' }, 104 { RTF_BLACKHOLE,'B' }, 105 { RTF_BROADCAST,'b' }, 106 { 0 } 107 }; 108 109 typedef union { 110 long dummy; /* Helps align structure. */ 111 struct sockaddr u_sa; 112 u_short u_data[128]; 113 } sa_u; 114 115 static sa_u pt_u; 116 117 int do_rtent = 0; 118 struct rtentry rtentry; 119 struct radix_node rnode; 120 struct radix_mask rmask; 121 struct radix_node_head *rt_tables[AF_MAX+1]; 122 123 int NewTree = 0; 124 125 static struct sockaddr *kgetsa (struct sockaddr *); 126 static void size_cols (int ef, struct radix_node *rn); 127 static void size_cols_tree (struct radix_node *rn); 128 static void size_cols_rtentry (struct rtentry *rt); 129 static void p_tree (struct radix_node *); 130 static void p_rtnode (void); 131 static void ntreestuff (void); 132 static void np_rtentry (struct rt_msghdr *); 133 static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 134 static const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, 135 int flags); 136 static void p_flags (int, char *); 137 static const char *fmt_flags(int f); 138 static void p_rtentry (struct rtentry *); 139 static u_long forgemask (u_long); 140 static void domask (char *, u_long, u_long); 141 142 /* 143 * Print routing tables. 144 */ 145 void 146 routepr(u_long rtree) 147 { 148 struct radix_node_head *rnh, head; 149 int i; 150 151 printf("Routing tables\n"); 152 153 if (Aflag == 0 && NewTree) 154 ntreestuff(); 155 else { 156 if (rtree == 0) { 157 printf("rt_tables: symbol not in namelist\n"); 158 return; 159 } 160 161 kget(rtree, rt_tables); 162 for (i = 0; i <= AF_MAX; i++) { 163 if ((rnh = rt_tables[i]) == 0) 164 continue; 165 kget(rnh, head); 166 if (i == AF_UNSPEC) { 167 if (Aflag && af == 0) { 168 printf("Netmasks:\n"); 169 p_tree(head.rnh_treetop); 170 } 171 } else if (af == AF_UNSPEC || af == i) { 172 size_cols(i, head.rnh_treetop); 173 pr_family(i); 174 do_rtent = 1; 175 pr_rthdr(i); 176 p_tree(head.rnh_treetop); 177 } 178 } 179 } 180 } 181 182 /* 183 * Print address family header before a section of the routing table. 184 */ 185 void 186 pr_family(int af) 187 { 188 char *afname; 189 190 switch (af) { 191 case AF_INET: 192 afname = "Internet"; 193 break; 194 #ifdef INET6 195 case AF_INET6: 196 afname = "Internet6"; 197 break; 198 #endif /*INET6*/ 199 case AF_IPX: 200 afname = "IPX"; 201 break; 202 #ifdef NS 203 case AF_NS: 204 afname = "XNS"; 205 break; 206 #endif 207 case AF_ISO: 208 afname = "ISO"; 209 break; 210 case AF_APPLETALK: 211 afname = "AppleTalk"; 212 break; 213 case AF_CCITT: 214 afname = "X.25"; 215 break; 216 case AF_NETGRAPH: 217 afname = "Netgraph"; 218 break; 219 default: 220 afname = NULL; 221 break; 222 } 223 if (afname) 224 printf("\n%s:\n", afname); 225 else 226 printf("\nProtocol Family %d:\n", af); 227 } 228 229 /* column widths; each followed by one space */ 230 #ifndef INET6 231 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 232 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 233 #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 234 #else 235 #define WID_DST_DEFAULT(af) \ 236 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 237 #define WID_GW_DEFAULT(af) \ 238 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 239 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 :6)) 240 #endif /*INET6*/ 241 242 static int wid_dst; 243 static int wid_gw; 244 static int wid_flags; 245 static int wid_refs; 246 static int wid_use; 247 static int wid_mtu; 248 static int wid_if; 249 static int wid_expire; 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; 262 263 if (Wflag) 264 size_cols_tree(rn); 265 } 266 267 static void 268 size_cols_tree(struct radix_node *rn) 269 { 270 again: 271 kget(rn, rnode); 272 if (rnode.rn_bit < 0) { 273 if ((rnode.rn_flags & RNF_ROOT) == 0) { 274 kget(rn, rtentry); 275 size_cols_rtentry(&rtentry); 276 } 277 if ((rn = rnode.rn_dupedkey)) 278 goto again; 279 } else { 280 rn = rnode.rn_right; 281 size_cols_tree(rnode.rn_left); 282 size_cols_tree(rn); 283 } 284 } 285 286 static void 287 size_cols_rtentry(struct rtentry *rt) 288 { 289 static struct ifnet ifnet, *lastif; 290 struct rtentry parent; 291 static char buffer[100]; 292 const char *bp; 293 struct sockaddr *sa; 294 sa_u addr, mask; 295 int len; 296 297 /* 298 * Don't print protocol-cloned routes unless -a. 299 */ 300 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 301 kget(rt->rt_parent, parent); 302 if (parent.rt_flags & RTF_PRCLONING) 303 return; 304 } 305 306 bzero(&addr, sizeof(addr)); 307 if ((sa = kgetsa(rt_key(rt)))) 308 bcopy(sa, &addr, sa->sa_len); 309 bzero(&mask, sizeof(mask)); 310 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 311 bcopy(sa, &mask, sa->sa_len); 312 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 313 len = strlen(bp); 314 wid_dst = MAX(len, wid_dst); 315 316 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 317 len = strlen(bp); 318 wid_gw = MAX(len, wid_gw); 319 320 bp = fmt_flags(rt->rt_flags); 321 len = strlen(bp); 322 wid_flags = MAX(len, wid_flags); 323 324 if (addr.u_sa.sa_family == AF_INET || Wflag) { 325 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); 326 wid_refs = MAX(len, wid_refs); 327 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 328 wid_use = MAX(len, wid_use); 329 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 330 len = snprintf(buffer, sizeof(buffer), 331 "%lu", rt->rt_rmx.rmx_mtu); 332 wid_mtu = MAX(len, wid_mtu); 333 } 334 } 335 if (rt->rt_ifp) { 336 if (rt->rt_ifp != lastif) { 337 kget(rt->rt_ifp, ifnet); 338 lastif = rt->rt_ifp; 339 len = strlen(ifnet.if_xname); 340 wid_if = MAX(len, wid_if); 341 } 342 if (rt->rt_rmx.rmx_expire) { 343 time_t expire_time; 344 345 if ((expire_time = 346 rt->rt_rmx.rmx_expire - time(NULL)) > 0) { 347 snprintf(buffer, sizeof(buffer), "%d", 348 (int)expire_time); 349 wid_expire = MAX(len, wid_expire); 350 } 351 } 352 } 353 } 354 355 356 /* 357 * Print header for routing table columns. 358 */ 359 void 360 pr_rthdr(int af) 361 { 362 363 if (Aflag) 364 printf("%-8.8s ","Address"); 365 if (af == AF_INET || Wflag) { 366 if (Wflag) { 367 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s %*s\n", 368 wid_dst, wid_dst, "Destination", 369 wid_gw, wid_gw, "Gateway", 370 wid_flags, wid_flags, "Flags", 371 wid_refs, wid_refs, "Refs", 372 wid_use, wid_use, "Use", 373 wid_mtu, wid_mtu, "Mtu", 374 wid_if, wid_if, "Netif", 375 wid_expire, "Expire"); 376 } else { 377 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 378 wid_dst, wid_dst, "Destination", 379 wid_gw, wid_gw, "Gateway", 380 wid_flags, wid_flags, "Flags", 381 wid_refs, wid_refs, "Refs", 382 wid_use, wid_use, "Use", 383 wid_if, wid_if, "Netif", 384 wid_expire, "Expire"); 385 } 386 } else { 387 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 388 wid_dst, wid_dst, "Destination", 389 wid_gw, wid_gw, "Gateway", 390 wid_flags, wid_flags, "Flags", 391 wid_if, wid_if, "Netif", 392 wid_expire, "Expire"); 393 } 394 } 395 396 static struct sockaddr * 397 kgetsa(struct sockaddr *dst) 398 { 399 400 kget(dst, pt_u.u_sa); 401 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 402 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 403 return (&pt_u.u_sa); 404 } 405 406 static void 407 p_tree(struct radix_node *rn) 408 { 409 410 again: 411 kget(rn, rnode); 412 if (rnode.rn_bit < 0) { 413 if (Aflag) 414 printf("%-8.8lx ", (u_long)rn); 415 if (rnode.rn_flags & RNF_ROOT) { 416 if (Aflag) 417 printf("(root node)%s", 418 rnode.rn_dupedkey ? " =>\n" : "\n"); 419 } else if (do_rtent) { 420 kget(rn, rtentry); 421 p_rtentry(&rtentry); 422 if (Aflag) 423 p_rtnode(); 424 } else { 425 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 426 NULL, 0, 44); 427 putchar('\n'); 428 } 429 if ((rn = rnode.rn_dupedkey)) 430 goto again; 431 } else { 432 if (Aflag && do_rtent) { 433 printf("%-8.8lx ", (u_long)rn); 434 p_rtnode(); 435 } 436 rn = rnode.rn_right; 437 p_tree(rnode.rn_left); 438 p_tree(rn); 439 } 440 } 441 442 char nbuf[20]; 443 444 static void 445 p_rtnode(void) 446 { 447 struct radix_mask *rm = rnode.rn_mklist; 448 449 if (rnode.rn_bit < 0) { 450 if (rnode.rn_mask) { 451 printf("\t mask "); 452 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 453 NULL, 0, -1); 454 } else if (rm == 0) 455 return; 456 } else { 457 sprintf(nbuf, "(%d)", rnode.rn_bit); 458 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 459 } 460 while (rm) { 461 kget(rm, rmask); 462 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 463 printf(" mk = %8.8lx {(%d),%s", 464 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 465 if (rmask.rm_flags & RNF_NORMAL) { 466 struct radix_node rnode_aux; 467 printf(" <normal>, "); 468 kget(rmask.rm_leaf, rnode_aux); 469 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 470 NULL, 0, -1); 471 } else 472 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 473 NULL, 0, -1); 474 putchar('}'); 475 if ((rm = rmask.rm_next)) 476 printf(" ->"); 477 } 478 putchar('\n'); 479 } 480 481 static void 482 ntreestuff(void) 483 { 484 size_t needed; 485 int mib[6]; 486 char *buf, *next, *lim; 487 register struct rt_msghdr *rtm; 488 489 mib[0] = CTL_NET; 490 mib[1] = PF_ROUTE; 491 mib[2] = 0; 492 mib[3] = 0; 493 mib[4] = NET_RT_DUMP; 494 mib[5] = 0; 495 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 496 err(1, "sysctl: net.route.0.0.dump estimate"); 497 } 498 499 if ((buf = malloc(needed)) == 0) { 500 err(2, "malloc(%lu)", (unsigned long)needed); 501 } 502 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 503 err(1, "sysctl: net.route.0.0.dump"); 504 } 505 lim = buf + needed; 506 for (next = buf; next < lim; next += rtm->rtm_msglen) { 507 rtm = (struct rt_msghdr *)next; 508 np_rtentry(rtm); 509 } 510 } 511 512 static void 513 np_rtentry(struct rt_msghdr *rtm) 514 { 515 register struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 516 #ifdef notdef 517 static int masks_done, banner_printed; 518 #endif 519 static int old_af; 520 int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 521 522 #ifdef notdef 523 /* for the moment, netmasks are skipped over */ 524 if (!banner_printed) { 525 printf("Netmasks:\n"); 526 banner_printed = 1; 527 } 528 if (masks_done == 0) { 529 if (rtm->rtm_addrs != RTA_DST ) { 530 masks_done = 1; 531 af = sa->sa_family; 532 } 533 } else 534 #endif 535 af = sa->sa_family; 536 if (af != old_af) { 537 pr_family(af); 538 old_af = af; 539 } 540 if (rtm->rtm_addrs == RTA_DST) 541 p_sockaddr(sa, NULL, 0, 36); 542 else { 543 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 544 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 545 p_sockaddr(sa, NULL, 0, 18); 546 } 547 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 548 putchar('\n'); 549 } 550 551 static void 552 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 553 { 554 const char *cp; 555 556 cp = fmt_sockaddr(sa, mask, flags); 557 558 if (width < 0 ) 559 printf("%s ", cp); 560 else { 561 if (numeric_addr) 562 printf("%-*s ", width, cp); 563 else 564 printf("%-*.*s ", width, width, cp); 565 } 566 } 567 568 static const char * 569 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 570 { 571 static char workbuf[128]; 572 char *cplim; 573 char *cp = workbuf; 574 575 switch(sa->sa_family) { 576 case AF_INET: 577 { 578 register struct sockaddr_in *sin = (struct sockaddr_in *)sa; 579 580 if ((sin->sin_addr.s_addr == INADDR_ANY) && 581 mask && 582 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 583 ==0L) 584 cp = "default" ; 585 else if (flags & RTF_HOST) 586 cp = routename(sin->sin_addr.s_addr); 587 else if (mask) 588 cp = netname(sin->sin_addr.s_addr, 589 ntohl(((struct sockaddr_in *)mask) 590 ->sin_addr.s_addr)); 591 else 592 cp = netname(sin->sin_addr.s_addr, 0L); 593 break; 594 } 595 596 #ifdef INET6 597 case AF_INET6: 598 { 599 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 600 struct in6_addr *in6 = &sa6->sin6_addr; 601 602 /* 603 * XXX: This is a special workaround for KAME kernels. 604 * sin6_scope_id field of SA should be set in the future. 605 */ 606 if (IN6_IS_ADDR_LINKLOCAL(in6) || 607 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 608 /* XXX: override is ok? */ 609 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 610 *(u_short *)&in6->s6_addr[2] = 0; 611 } 612 613 if (flags & RTF_HOST) 614 cp = routename6(sa6); 615 else if (mask) 616 cp = netname6(sa6, 617 &((struct sockaddr_in6 *)mask)->sin6_addr); 618 else { 619 cp = netname6(sa6, NULL); 620 } 621 break; 622 } 623 #endif /*INET6*/ 624 625 case AF_IPX: 626 { 627 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 628 if (ipx_nullnet(satoipx_addr(work))) 629 cp = "default"; 630 else 631 cp = ipx_print(sa); 632 break; 633 } 634 case AF_APPLETALK: 635 { 636 if (!(flags & RTF_HOST) && mask) 637 cp = atalk_print2(sa,mask,9); 638 else 639 cp = atalk_print(sa,11); 640 break; 641 } 642 case AF_NETGRAPH: 643 { 644 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 645 break; 646 } 647 #ifdef NS 648 case AF_NS: 649 cp = ns_print(sa); 650 break; 651 #endif 652 653 case AF_LINK: 654 { 655 register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 656 657 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 658 sdl->sdl_slen == 0) 659 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 660 else 661 switch (sdl->sdl_type) { 662 663 case IFT_ETHER: 664 case IFT_L2VLAN: 665 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 666 cp = ether_ntoa((struct ether_addr *) 667 (sdl->sdl_data + sdl->sdl_nlen)); 668 break; 669 } 670 /* FALLTHROUGH */ 671 default: 672 cp = link_ntoa(sdl); 673 break; 674 } 675 break; 676 } 677 678 default: 679 { 680 register u_char *s = (u_char *)sa->sa_data, *slim; 681 682 slim = sa->sa_len + (u_char *) sa; 683 cplim = cp + sizeof(workbuf) - 6; 684 cp += sprintf(cp, "(%d)", sa->sa_family); 685 while (s < slim && cp < cplim) { 686 cp += sprintf(cp, " %02x", *s++); 687 if (s < slim) 688 cp += sprintf(cp, "%02x", *s++); 689 } 690 cp = workbuf; 691 } 692 } 693 694 return (cp); 695 } 696 697 static void 698 p_flags(int f, char *format) 699 { 700 printf(format, fmt_flags(f)); 701 } 702 703 static const char * 704 fmt_flags(int f) 705 { 706 static char name[33]; 707 char *flags; 708 struct bits *p = bits; 709 710 for (flags = name; p->b_mask; p++) 711 if (p->b_mask & f) 712 *flags++ = p->b_val; 713 *flags = '\0'; 714 return (name); 715 } 716 717 static void 718 p_rtentry(struct rtentry *rt) 719 { 720 static struct ifnet ifnet, *lastif; 721 struct rtentry parent; 722 static char buffer[128]; 723 static char prettyname[128]; 724 struct sockaddr *sa; 725 sa_u addr, mask; 726 727 /* 728 * Don't print protocol-cloned routes unless -a. 729 */ 730 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 731 kget(rt->rt_parent, parent); 732 if (parent.rt_flags & RTF_PRCLONING) 733 return; 734 } 735 736 bzero(&addr, sizeof(addr)); 737 if ((sa = kgetsa(rt_key(rt)))) 738 bcopy(sa, &addr, sa->sa_len); 739 bzero(&mask, sizeof(mask)); 740 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 741 bcopy(sa, &mask, sa->sa_len); 742 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 743 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 744 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 745 p_flags(rt->rt_flags, buffer); 746 if (addr.u_sa.sa_family == AF_INET || Wflag) { 747 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 748 wid_use, rt->rt_use); 749 if (Wflag) { 750 if (rt->rt_rmx.rmx_mtu != 0) 751 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 752 else 753 printf("%*s ", wid_mtu, ""); 754 } 755 } 756 if (rt->rt_ifp) { 757 if (rt->rt_ifp != lastif) { 758 kget(rt->rt_ifp, ifnet); 759 lastif = rt->rt_ifp; 760 strlcpy(prettyname, ifnet.if_xname, sizeof(prettyname)); 761 } 762 printf("%*.*s", wid_if, wid_if, prettyname); 763 if (rt->rt_rmx.rmx_expire) { 764 time_t expire_time; 765 766 if ((expire_time = 767 rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0) 768 printf(" %*d", wid_expire, (int)expire_time); 769 } 770 if (rt->rt_nodes[0].rn_dupedkey) 771 printf(" =>"); 772 } 773 putchar('\n'); 774 } 775 776 char * 777 routename(u_long in) 778 { 779 register char *cp; 780 static char line[MAXHOSTNAMELEN]; 781 struct hostent *hp; 782 783 cp = 0; 784 if (!numeric_addr) { 785 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 786 AF_INET); 787 if (hp) { 788 cp = hp->h_name; 789 trimdomain(cp, strlen(cp)); 790 } 791 } 792 if (cp) { 793 strncpy(line, cp, sizeof(line) - 1); 794 line[sizeof(line) - 1] = '\0'; 795 } else { 796 #define C(x) ((x) & 0xff) 797 in = ntohl(in); 798 sprintf(line, "%lu.%lu.%lu.%lu", 799 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 800 } 801 return (line); 802 } 803 804 static u_long 805 forgemask(u_long a) 806 { 807 u_long m; 808 809 if (IN_CLASSA(a)) 810 m = IN_CLASSA_NET; 811 else if (IN_CLASSB(a)) 812 m = IN_CLASSB_NET; 813 else 814 m = IN_CLASSC_NET; 815 return (m); 816 } 817 818 static void 819 domask(char *dst, u_long addr, u_long mask) 820 { 821 register int b, i; 822 823 if (!mask || (forgemask(addr) == mask)) { 824 *dst = '\0'; 825 return; 826 } 827 i = 0; 828 for (b = 0; b < 32; b++) 829 if (mask & (1 << b)) { 830 register int bb; 831 832 i = b; 833 for (bb = b+1; bb < 32; bb++) 834 if (!(mask & (1 << bb))) { 835 i = -1; /* noncontig */ 836 break; 837 } 838 break; 839 } 840 if (i == -1) 841 sprintf(dst, "&0x%lx", mask); 842 else 843 sprintf(dst, "/%d", 32-i); 844 } 845 846 /* 847 * Return the name of the network whose address is given. 848 * The address is assumed to be that of a net or subnet, not a host. 849 */ 850 char * 851 netname(u_long in, u_long mask) 852 { 853 char *cp = 0; 854 static char line[MAXHOSTNAMELEN]; 855 struct netent *np = 0; 856 u_long dmask; 857 register u_long i; 858 859 #define NSHIFT(m) ( \ 860 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 861 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 862 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 863 0) 864 865 i = ntohl(in); 866 dmask = forgemask(i); 867 if (!numeric_addr && i) { 868 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 869 if (np == NULL && mask == 0) 870 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 871 if (np != NULL) { 872 cp = np->n_name; 873 trimdomain(cp, strlen(cp)); 874 } 875 } 876 #undef NSHIFT 877 if (cp != NULL) { 878 strncpy(line, cp, sizeof(line) - 1); 879 line[sizeof(line) - 1] = '\0'; 880 } else { 881 switch (dmask) { 882 case IN_CLASSA_NET: 883 if ((i & IN_CLASSA_HOST) == 0) { 884 sprintf(line, "%lu", C(i >> 24)); 885 break; 886 } 887 /* FALLTHROUGH */ 888 case IN_CLASSB_NET: 889 if ((i & IN_CLASSB_HOST) == 0) { 890 sprintf(line, "%lu.%lu", 891 C(i >> 24), C(i >> 16)); 892 break; 893 } 894 /* FALLTHROUGH */ 895 case IN_CLASSC_NET: 896 if ((i & IN_CLASSC_HOST) == 0) { 897 sprintf(line, "%lu.%lu.%lu", 898 C(i >> 24), C(i >> 16), C(i >> 8)); 899 break; 900 } 901 /* FALLTHROUGH */ 902 default: 903 sprintf(line, "%lu.%lu.%lu.%lu", 904 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 905 break; 906 } 907 } 908 domask(line + strlen(line), i, mask); 909 return (line); 910 } 911 912 #ifdef INET6 913 char * 914 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 915 { 916 static char line[MAXHOSTNAMELEN]; 917 u_char *p = (u_char *)mask; 918 u_char *lim; 919 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 920 921 if (mask) { 922 for (masklen = 0, lim = p + 16; p < lim; p++) { 923 switch (*p) { 924 case 0xff: 925 masklen += 8; 926 break; 927 case 0xfe: 928 masklen += 7; 929 break; 930 case 0xfc: 931 masklen += 6; 932 break; 933 case 0xf8: 934 masklen += 5; 935 break; 936 case 0xf0: 937 masklen += 4; 938 break; 939 case 0xe0: 940 masklen += 3; 941 break; 942 case 0xc0: 943 masklen += 2; 944 break; 945 case 0x80: 946 masklen += 1; 947 break; 948 case 0x00: 949 break; 950 default: 951 illegal ++; 952 break; 953 } 954 } 955 if (illegal) 956 fprintf(stderr, "illegal prefixlen\n"); 957 } 958 else 959 masklen = 128; 960 961 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 962 return("default"); 963 964 if (numeric_addr) 965 flag |= NI_NUMERICHOST; 966 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 967 NULL, 0, flag); 968 969 if (numeric_addr) 970 sprintf(&line[strlen(line)], "/%d", masklen); 971 972 return line; 973 } 974 975 char * 976 routename6(struct sockaddr_in6 *sa6) 977 { 978 static char line[MAXHOSTNAMELEN]; 979 int flag = NI_WITHSCOPEID; 980 /* use local variable for safety */ 981 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),}; 982 983 sa6_local.sin6_addr = sa6->sin6_addr; 984 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 985 986 if (numeric_addr) 987 flag |= NI_NUMERICHOST; 988 989 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 990 line, sizeof(line), NULL, 0, flag); 991 992 return line; 993 } 994 #endif /*INET6*/ 995 996 /* 997 * Print routing statistics 998 */ 999 void 1000 rt_stats(void) 1001 { 1002 struct rtstatistics rts; 1003 int error = 0; 1004 1005 error = kinfo_get_net_rtstatistics(&rts); 1006 if (error) { 1007 printf("routing: could not retrieve statistics\n"); 1008 return; 1009 } 1010 printf("routing:\n"); 1011 1012 #define p(f, m) if (rts.f || sflag <= 1) \ 1013 printf(m, rts.f, plural(rts.f)) 1014 1015 p(rts_badredirect, "\t%lu bad routing redirect%s\n"); 1016 p(rts_dynamic, "\t%lu dynamically created route%s\n"); 1017 p(rts_newgateway, "\t%lu new gateway%s due to redirects\n"); 1018 p(rts_unreach, "\t%lu destination%s found unreachable\n"); 1019 p(rts_wildcard, "\t%lu use%s of a wildcard route\n"); 1020 #undef p 1021 } 1022 1023 char * 1024 ipx_print(struct sockaddr *sa) 1025 { 1026 u_short port; 1027 struct servent *sp = 0; 1028 char *net = "", *host = ""; 1029 register char *p; 1030 register u_char *q; 1031 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1032 static char mybuf[50]; 1033 char cport[10], chost[15], cnet[15]; 1034 1035 port = ntohs(work.x_port); 1036 1037 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1038 1039 if (port) { 1040 if (sp) 1041 sprintf(mybuf, "*.%s", sp->s_name); 1042 else 1043 sprintf(mybuf, "*.%x", port); 1044 } else 1045 sprintf(mybuf, "*.*"); 1046 1047 return (mybuf); 1048 } 1049 1050 if (ipx_wildnet(work)) 1051 net = "any"; 1052 else if (ipx_nullnet(work)) 1053 net = "*"; 1054 else { 1055 q = work.x_net.c_net; 1056 sprintf(cnet, "%02x%02x%02x%02x", 1057 q[0], q[1], q[2], q[3]); 1058 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1059 continue; 1060 net = p; 1061 } 1062 1063 if (ipx_wildhost(work)) 1064 host = "any"; 1065 else if (ipx_nullhost(work)) 1066 host = "*"; 1067 else { 1068 q = work.x_host.c_host; 1069 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1070 q[0], q[1], q[2], q[3], q[4], q[5]); 1071 for (p = chost; *p == '0' && p < chost + 12; p++) 1072 continue; 1073 host = p; 1074 } 1075 1076 if (port) { 1077 if (strcmp(host, "*") == 0) 1078 host = ""; 1079 if (sp) 1080 snprintf(cport, sizeof(cport), 1081 "%s%s", *host ? "." : "", sp->s_name); 1082 else 1083 snprintf(cport, sizeof(cport), 1084 "%s%x", *host ? "." : "", port); 1085 } else 1086 *cport = 0; 1087 1088 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1089 return(mybuf); 1090 } 1091 1092 char * 1093 ipx_phost(struct sockaddr *sa) 1094 { 1095 register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1096 struct sockaddr_ipx work; 1097 static union ipx_net ipx_zeronet; 1098 char *p; 1099 struct ipx_addr in; 1100 1101 work = *sipx; 1102 in = work.sipx_addr; 1103 1104 work.sipx_addr.x_port = 0; 1105 work.sipx_addr.x_net = ipx_zeronet; 1106 p = ipx_print((struct sockaddr *)&work); 1107 if (strncmp("*.", p, 2) == 0) p += 2; 1108 1109 return(p); 1110 } 1111 1112 #ifdef NS 1113 short ns_nullh[] = {0,0,0}; 1114 short ns_bh[] = {-1,-1,-1}; 1115 1116 char * 1117 ns_print(struct sockaddr *sa) 1118 { 1119 register struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 1120 struct ns_addr work; 1121 union { union ns_net net_e; u_long long_e; } net; 1122 u_short port; 1123 static char mybuf[50], cport[10], chost[25]; 1124 char *host = ""; 1125 register char *p; register u_char *q; 1126 1127 work = sns->sns_addr; 1128 port = ntohs(work.x_port); 1129 work.x_port = 0; 1130 net.net_e = work.x_net; 1131 if (ns_nullhost(work) && net.long_e == 0) { 1132 if (port ) { 1133 sprintf(mybuf, "*.%xH", port); 1134 upHex(mybuf); 1135 } else 1136 sprintf(mybuf, "*.*"); 1137 return (mybuf); 1138 } 1139 1140 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) { 1141 host = "any"; 1142 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 1143 host = "*"; 1144 } else { 1145 q = work.x_host.c_host; 1146 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 1147 q[0], q[1], q[2], q[3], q[4], q[5]); 1148 for (p = chost; *p == '0' && p < chost + 12; p++) 1149 continue; 1150 host = p; 1151 } 1152 if (port) 1153 sprintf(cport, ".%xH", htons(port)); 1154 else 1155 *cport = 0; 1156 1157 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport); 1158 upHex(mybuf); 1159 return(mybuf); 1160 } 1161 1162 char * 1163 ns_phost(struct sockaddr *sa) 1164 { 1165 register struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 1166 struct sockaddr_ns work; 1167 static union ns_net ns_zeronet; 1168 char *p; 1169 1170 work = *sns; 1171 work.sns_addr.x_port = 0; 1172 work.sns_addr.x_net = ns_zeronet; 1173 1174 p = ns_print((struct sockaddr *)&work); 1175 if (strncmp("0H.", p, 3) == 0) 1176 p += 3; 1177 return(p); 1178 } 1179 #endif 1180 1181 void 1182 upHex(char *p0) 1183 { 1184 register char *p = p0; 1185 1186 for (; *p; p++) 1187 switch (*p) { 1188 1189 case 'a': 1190 case 'b': 1191 case 'c': 1192 case 'd': 1193 case 'e': 1194 case 'f': 1195 *p += ('A' - 'a'); 1196 break; 1197 } 1198 } 1199