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 1.7 2004/12/15 09:27:05 dillon 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 "netstat.h" 71 72 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 73 74 75 /* alignment constraint for routing socket */ 76 #define ROUNDUP(a) \ 77 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 78 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 79 80 /* 81 * Definitions for showing gateway flags. 82 */ 83 struct bits { 84 u_long b_mask; 85 char b_val; 86 } bits[] = { 87 { RTF_UP, 'U' }, 88 { RTF_GATEWAY, 'G' }, 89 { RTF_HOST, 'H' }, 90 { RTF_REJECT, 'R' }, 91 { RTF_DYNAMIC, 'D' }, 92 { RTF_MODIFIED, 'M' }, 93 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 94 { RTF_CLONING, 'C' }, 95 { RTF_XRESOLVE, 'X' }, 96 { RTF_LLINFO, 'L' }, 97 { RTF_STATIC, 'S' }, 98 { RTF_PROTO1, '1' }, 99 { RTF_PROTO2, '2' }, 100 { RTF_WASCLONED,'W' }, 101 { RTF_PRCLONING,'c' }, 102 { RTF_PROTO3, '3' }, 103 { RTF_BLACKHOLE,'B' }, 104 { RTF_BROADCAST,'b' }, 105 { 0 } 106 }; 107 108 typedef union { 109 long dummy; /* Helps align structure. */ 110 struct sockaddr u_sa; 111 u_short u_data[128]; 112 } sa_u; 113 114 static sa_u pt_u; 115 116 int do_rtent = 0; 117 struct rtentry rtentry; 118 struct radix_node rnode; 119 struct radix_mask rmask; 120 struct radix_node_head *rt_tables[AF_MAX+1]; 121 122 int NewTree = 0; 123 124 static struct sockaddr *kgetsa (struct sockaddr *); 125 static void size_cols (int ef, struct radix_node *rn); 126 static void size_cols_tree (struct radix_node *rn); 127 static void size_cols_rtentry (struct rtentry *rt); 128 static void p_tree (struct radix_node *); 129 static void p_rtnode (void); 130 static void ntreestuff (void); 131 static void np_rtentry (struct rt_msghdr *); 132 static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 133 static const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, 134 int flags); 135 static void p_flags (int, char *); 136 static const char *fmt_flags(int f); 137 static void p_rtentry (struct rtentry *); 138 static u_long forgemask (u_long); 139 static void domask (char *, u_long, u_long); 140 141 /* 142 * Print routing tables. 143 */ 144 void 145 routepr(u_long rtree) 146 { 147 struct radix_node_head *rnh, head; 148 int i; 149 150 printf("Routing tables\n"); 151 152 if (Aflag == 0 && NewTree) 153 ntreestuff(); 154 else { 155 if (rtree == 0) { 156 printf("rt_tables: symbol not in namelist\n"); 157 return; 158 } 159 160 kget(rtree, rt_tables); 161 for (i = 0; i <= AF_MAX; i++) { 162 if ((rnh = rt_tables[i]) == 0) 163 continue; 164 kget(rnh, head); 165 if (i == AF_UNSPEC) { 166 if (Aflag && af == 0) { 167 printf("Netmasks:\n"); 168 p_tree(head.rnh_treetop); 169 } 170 } else if (af == AF_UNSPEC || af == i) { 171 size_cols(i, head.rnh_treetop); 172 pr_family(i); 173 do_rtent = 1; 174 pr_rthdr(i); 175 p_tree(head.rnh_treetop); 176 } 177 } 178 } 179 } 180 181 /* 182 * Print address family header before a section of the routing table. 183 */ 184 void 185 pr_family(int af) 186 { 187 char *afname; 188 189 switch (af) { 190 case AF_INET: 191 afname = "Internet"; 192 break; 193 #ifdef INET6 194 case AF_INET6: 195 afname = "Internet6"; 196 break; 197 #endif /*INET6*/ 198 case AF_IPX: 199 afname = "IPX"; 200 break; 201 #ifdef NS 202 case AF_NS: 203 afname = "XNS"; 204 break; 205 #endif 206 case AF_ISO: 207 afname = "ISO"; 208 break; 209 case AF_APPLETALK: 210 afname = "AppleTalk"; 211 break; 212 case AF_CCITT: 213 afname = "X.25"; 214 break; 215 case AF_NETGRAPH: 216 afname = "Netgraph"; 217 break; 218 default: 219 afname = NULL; 220 break; 221 } 222 if (afname) 223 printf("\n%s:\n", afname); 224 else 225 printf("\nProtocol Family %d:\n", af); 226 } 227 228 /* column widths; each followed by one space */ 229 #ifndef INET6 230 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 231 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 232 #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 233 #else 234 #define WID_DST_DEFAULT(af) \ 235 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 236 #define WID_GW_DEFAULT(af) \ 237 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 238 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 :6)) 239 #endif /*INET6*/ 240 241 static int wid_dst; 242 static int wid_gw; 243 static int wid_flags; 244 static int wid_refs; 245 static int wid_use; 246 static int wid_mtu; 247 static int wid_if; 248 static int wid_expire; 249 250 static void 251 size_cols(int ef, struct radix_node *rn) 252 { 253 wid_dst = WID_DST_DEFAULT(ef); 254 wid_gw = WID_GW_DEFAULT(ef); 255 wid_flags = 6; 256 wid_refs = 6; 257 wid_use = 8; 258 wid_mtu = 6; 259 wid_if = WID_IF_DEFAULT(ef); 260 wid_expire = 6; 261 262 if (Wflag) 263 size_cols_tree(rn); 264 } 265 266 static void 267 size_cols_tree(struct radix_node *rn) 268 { 269 again: 270 kget(rn, rnode); 271 if (rnode.rn_bit < 0) { 272 if ((rnode.rn_flags & RNF_ROOT) == 0) { 273 kget(rn, rtentry); 274 size_cols_rtentry(&rtentry); 275 } 276 if ((rn = rnode.rn_dupedkey)) 277 goto again; 278 } else { 279 rn = rnode.rn_right; 280 size_cols_tree(rnode.rn_left); 281 size_cols_tree(rn); 282 } 283 } 284 285 static void 286 size_cols_rtentry(struct rtentry *rt) 287 { 288 static struct ifnet ifnet, *lastif; 289 struct rtentry parent; 290 static char buffer[100]; 291 const char *bp; 292 struct sockaddr *sa; 293 sa_u addr, mask; 294 int len; 295 296 /* 297 * Don't print protocol-cloned routes unless -a. 298 */ 299 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 300 kget(rt->rt_parent, parent); 301 if (parent.rt_flags & RTF_PRCLONING) 302 return; 303 } 304 305 bzero(&addr, sizeof(addr)); 306 if ((sa = kgetsa(rt_key(rt)))) 307 bcopy(sa, &addr, sa->sa_len); 308 bzero(&mask, sizeof(mask)); 309 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 310 bcopy(sa, &mask, sa->sa_len); 311 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 312 len = strlen(bp); 313 wid_dst = MAX(len, wid_dst); 314 315 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 316 len = strlen(bp); 317 wid_gw = MAX(len, wid_gw); 318 319 bp = fmt_flags(rt->rt_flags); 320 len = strlen(bp); 321 wid_flags = MAX(len, wid_flags); 322 323 if (addr.u_sa.sa_family == AF_INET || Wflag) { 324 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); 325 wid_refs = MAX(len, wid_refs); 326 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 327 wid_use = MAX(len, wid_use); 328 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 329 len = snprintf(buffer, sizeof(buffer), 330 "%lu", rt->rt_rmx.rmx_mtu); 331 wid_mtu = MAX(len, wid_mtu); 332 } 333 } 334 if (rt->rt_ifp) { 335 if (rt->rt_ifp != lastif) { 336 kget(rt->rt_ifp, ifnet); 337 lastif = rt->rt_ifp; 338 len = strlen(ifnet.if_xname); 339 wid_if = MAX(len, wid_if); 340 } 341 if (rt->rt_rmx.rmx_expire) { 342 time_t expire_time; 343 344 if ((expire_time = 345 rt->rt_rmx.rmx_expire - time(NULL)) > 0) { 346 snprintf(buffer, sizeof(buffer), "%d", 347 (int)expire_time); 348 wid_expire = MAX(len, wid_expire); 349 } 350 } 351 } 352 } 353 354 355 /* 356 * Print header for routing table columns. 357 */ 358 void 359 pr_rthdr(int af) 360 { 361 362 if (Aflag) 363 printf("%-8.8s ","Address"); 364 if (af == AF_INET || Wflag) { 365 if (Wflag) { 366 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s %*s\n", 367 wid_dst, wid_dst, "Destination", 368 wid_gw, wid_gw, "Gateway", 369 wid_flags, wid_flags, "Flags", 370 wid_refs, wid_refs, "Refs", 371 wid_use, wid_use, "Use", 372 wid_mtu, wid_mtu, "Mtu", 373 wid_if, wid_if, "Netif", 374 wid_expire, "Expire"); 375 } else { 376 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 377 wid_dst, wid_dst, "Destination", 378 wid_gw, wid_gw, "Gateway", 379 wid_flags, wid_flags, "Flags", 380 wid_refs, wid_refs, "Refs", 381 wid_use, wid_use, "Use", 382 wid_if, wid_if, "Netif", 383 wid_expire, "Expire"); 384 } 385 } else { 386 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 387 wid_dst, wid_dst, "Destination", 388 wid_gw, wid_gw, "Gateway", 389 wid_flags, wid_flags, "Flags", 390 wid_if, wid_if, "Netif", 391 wid_expire, "Expire"); 392 } 393 } 394 395 static struct sockaddr * 396 kgetsa(struct sockaddr *dst) 397 { 398 399 kget(dst, pt_u.u_sa); 400 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 401 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 402 return (&pt_u.u_sa); 403 } 404 405 static void 406 p_tree(struct radix_node *rn) 407 { 408 409 again: 410 kget(rn, rnode); 411 if (rnode.rn_bit < 0) { 412 if (Aflag) 413 printf("%-8.8lx ", (u_long)rn); 414 if (rnode.rn_flags & RNF_ROOT) { 415 if (Aflag) 416 printf("(root node)%s", 417 rnode.rn_dupedkey ? " =>\n" : "\n"); 418 } else if (do_rtent) { 419 kget(rn, rtentry); 420 p_rtentry(&rtentry); 421 if (Aflag) 422 p_rtnode(); 423 } else { 424 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 425 NULL, 0, 44); 426 putchar('\n'); 427 } 428 if ((rn = rnode.rn_dupedkey)) 429 goto again; 430 } else { 431 if (Aflag && do_rtent) { 432 printf("%-8.8lx ", (u_long)rn); 433 p_rtnode(); 434 } 435 rn = rnode.rn_right; 436 p_tree(rnode.rn_left); 437 p_tree(rn); 438 } 439 } 440 441 char nbuf[20]; 442 443 static void 444 p_rtnode(void) 445 { 446 struct radix_mask *rm = rnode.rn_mklist; 447 448 if (rnode.rn_bit < 0) { 449 if (rnode.rn_mask) { 450 printf("\t mask "); 451 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 452 NULL, 0, -1); 453 } else if (rm == 0) 454 return; 455 } else { 456 sprintf(nbuf, "(%d)", rnode.rn_bit); 457 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 458 } 459 while (rm) { 460 kget(rm, rmask); 461 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 462 printf(" mk = %8.8lx {(%d),%s", 463 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 464 if (rmask.rm_flags & RNF_NORMAL) { 465 struct radix_node rnode_aux; 466 printf(" <normal>, "); 467 kget(rmask.rm_leaf, rnode_aux); 468 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 469 NULL, 0, -1); 470 } else 471 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 472 NULL, 0, -1); 473 putchar('}'); 474 if ((rm = rmask.rm_next)) 475 printf(" ->"); 476 } 477 putchar('\n'); 478 } 479 480 static void 481 ntreestuff(void) 482 { 483 size_t needed; 484 int mib[6]; 485 char *buf, *next, *lim; 486 register struct rt_msghdr *rtm; 487 488 mib[0] = CTL_NET; 489 mib[1] = PF_ROUTE; 490 mib[2] = 0; 491 mib[3] = 0; 492 mib[4] = NET_RT_DUMP; 493 mib[5] = 0; 494 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 495 err(1, "sysctl: net.route.0.0.dump estimate"); 496 } 497 498 if ((buf = malloc(needed)) == 0) { 499 err(2, "malloc(%lu)", (unsigned long)needed); 500 } 501 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 502 err(1, "sysctl: net.route.0.0.dump"); 503 } 504 lim = buf + needed; 505 for (next = buf; next < lim; next += rtm->rtm_msglen) { 506 rtm = (struct rt_msghdr *)next; 507 np_rtentry(rtm); 508 } 509 } 510 511 static void 512 np_rtentry(struct rt_msghdr *rtm) 513 { 514 register struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 515 #ifdef notdef 516 static int masks_done, banner_printed; 517 #endif 518 static int old_af; 519 int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 520 521 #ifdef notdef 522 /* for the moment, netmasks are skipped over */ 523 if (!banner_printed) { 524 printf("Netmasks:\n"); 525 banner_printed = 1; 526 } 527 if (masks_done == 0) { 528 if (rtm->rtm_addrs != RTA_DST ) { 529 masks_done = 1; 530 af = sa->sa_family; 531 } 532 } else 533 #endif 534 af = sa->sa_family; 535 if (af != old_af) { 536 pr_family(af); 537 old_af = af; 538 } 539 if (rtm->rtm_addrs == RTA_DST) 540 p_sockaddr(sa, NULL, 0, 36); 541 else { 542 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 543 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 544 p_sockaddr(sa, NULL, 0, 18); 545 } 546 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 547 putchar('\n'); 548 } 549 550 static void 551 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 552 { 553 const char *cp; 554 555 cp = fmt_sockaddr(sa, mask, flags); 556 557 if (width < 0 ) 558 printf("%s ", cp); 559 else { 560 if (numeric_addr) 561 printf("%-*s ", width, cp); 562 else 563 printf("%-*.*s ", width, width, cp); 564 } 565 } 566 567 static const char * 568 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 569 { 570 static char workbuf[128]; 571 char *cplim; 572 char *cp = workbuf; 573 574 switch(sa->sa_family) { 575 case AF_INET: 576 { 577 register struct sockaddr_in *sin = (struct sockaddr_in *)sa; 578 579 if ((sin->sin_addr.s_addr == INADDR_ANY) && 580 mask && 581 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 582 ==0L) 583 cp = "default" ; 584 else if (flags & RTF_HOST) 585 cp = routename(sin->sin_addr.s_addr); 586 else if (mask) 587 cp = netname(sin->sin_addr.s_addr, 588 ntohl(((struct sockaddr_in *)mask) 589 ->sin_addr.s_addr)); 590 else 591 cp = netname(sin->sin_addr.s_addr, 0L); 592 break; 593 } 594 595 #ifdef INET6 596 case AF_INET6: 597 { 598 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 599 struct in6_addr *in6 = &sa6->sin6_addr; 600 601 /* 602 * XXX: This is a special workaround for KAME kernels. 603 * sin6_scope_id field of SA should be set in the future. 604 */ 605 if (IN6_IS_ADDR_LINKLOCAL(in6) || 606 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 607 /* XXX: override is ok? */ 608 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 609 *(u_short *)&in6->s6_addr[2] = 0; 610 } 611 612 if (flags & RTF_HOST) 613 cp = routename6(sa6); 614 else if (mask) 615 cp = netname6(sa6, 616 &((struct sockaddr_in6 *)mask)->sin6_addr); 617 else { 618 cp = netname6(sa6, NULL); 619 } 620 break; 621 } 622 #endif /*INET6*/ 623 624 case AF_IPX: 625 { 626 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 627 if (ipx_nullnet(satoipx_addr(work))) 628 cp = "default"; 629 else 630 cp = ipx_print(sa); 631 break; 632 } 633 case AF_APPLETALK: 634 { 635 if (!(flags & RTF_HOST) && mask) 636 cp = atalk_print2(sa,mask,9); 637 else 638 cp = atalk_print(sa,11); 639 break; 640 } 641 case AF_NETGRAPH: 642 { 643 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 644 break; 645 } 646 #ifdef NS 647 case AF_NS: 648 cp = ns_print(sa); 649 break; 650 #endif 651 652 case AF_LINK: 653 { 654 register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 655 656 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 657 sdl->sdl_slen == 0) 658 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 659 else 660 switch (sdl->sdl_type) { 661 662 case IFT_ETHER: 663 case IFT_L2VLAN: 664 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 665 cp = ether_ntoa((struct ether_addr *) 666 (sdl->sdl_data + sdl->sdl_nlen)); 667 break; 668 } 669 /* FALLTHROUGH */ 670 default: 671 cp = link_ntoa(sdl); 672 break; 673 } 674 break; 675 } 676 677 default: 678 { 679 register u_char *s = (u_char *)sa->sa_data, *slim; 680 681 slim = sa->sa_len + (u_char *) sa; 682 cplim = cp + sizeof(workbuf) - 6; 683 cp += sprintf(cp, "(%d)", sa->sa_family); 684 while (s < slim && cp < cplim) { 685 cp += sprintf(cp, " %02x", *s++); 686 if (s < slim) 687 cp += sprintf(cp, "%02x", *s++); 688 } 689 cp = workbuf; 690 } 691 } 692 693 return (cp); 694 } 695 696 static void 697 p_flags(int f, char *format) 698 { 699 printf(format, fmt_flags(f)); 700 } 701 702 static const char * 703 fmt_flags(int f) 704 { 705 static char name[33]; 706 char *flags; 707 struct bits *p = bits; 708 709 for (flags = name; p->b_mask; p++) 710 if (p->b_mask & f) 711 *flags++ = p->b_val; 712 *flags = '\0'; 713 return (name); 714 } 715 716 static void 717 p_rtentry(struct rtentry *rt) 718 { 719 static struct ifnet ifnet, *lastif; 720 struct rtentry parent; 721 static char buffer[128]; 722 static char prettyname[128]; 723 struct sockaddr *sa; 724 sa_u addr, mask; 725 726 /* 727 * Don't print protocol-cloned routes unless -a. 728 */ 729 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 730 kget(rt->rt_parent, parent); 731 if (parent.rt_flags & RTF_PRCLONING) 732 return; 733 } 734 735 bzero(&addr, sizeof(addr)); 736 if ((sa = kgetsa(rt_key(rt)))) 737 bcopy(sa, &addr, sa->sa_len); 738 bzero(&mask, sizeof(mask)); 739 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 740 bcopy(sa, &mask, sa->sa_len); 741 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 742 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 743 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 744 p_flags(rt->rt_flags, buffer); 745 if (addr.u_sa.sa_family == AF_INET || Wflag) { 746 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 747 wid_use, rt->rt_use); 748 if (Wflag) { 749 if (rt->rt_rmx.rmx_mtu != 0) 750 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 751 else 752 printf("%*s ", wid_mtu, ""); 753 } 754 } 755 if (rt->rt_ifp) { 756 if (rt->rt_ifp != lastif) { 757 kget(rt->rt_ifp, ifnet); 758 lastif = rt->rt_ifp; 759 strlcpy(prettyname, ifnet.if_xname, sizeof(prettyname)); 760 } 761 printf("%*.*s", wid_if, wid_if, prettyname); 762 if (rt->rt_rmx.rmx_expire) { 763 time_t expire_time; 764 765 if ((expire_time = 766 rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0) 767 printf(" %*d", wid_expire, (int)expire_time); 768 } 769 if (rt->rt_nodes[0].rn_dupedkey) 770 printf(" =>"); 771 } 772 putchar('\n'); 773 } 774 775 char * 776 routename(u_long in) 777 { 778 register char *cp; 779 static char line[MAXHOSTNAMELEN]; 780 struct hostent *hp; 781 782 cp = 0; 783 if (!numeric_addr) { 784 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 785 AF_INET); 786 if (hp) { 787 cp = hp->h_name; 788 trimdomain(cp, strlen(cp)); 789 } 790 } 791 if (cp) { 792 strncpy(line, cp, sizeof(line) - 1); 793 line[sizeof(line) - 1] = '\0'; 794 } else { 795 #define C(x) ((x) & 0xff) 796 in = ntohl(in); 797 sprintf(line, "%lu.%lu.%lu.%lu", 798 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 799 } 800 return (line); 801 } 802 803 static u_long 804 forgemask(u_long a) 805 { 806 u_long m; 807 808 if (IN_CLASSA(a)) 809 m = IN_CLASSA_NET; 810 else if (IN_CLASSB(a)) 811 m = IN_CLASSB_NET; 812 else 813 m = IN_CLASSC_NET; 814 return (m); 815 } 816 817 static void 818 domask(char *dst, u_long addr, u_long mask) 819 { 820 register int b, i; 821 822 if (!mask || (forgemask(addr) == mask)) { 823 *dst = '\0'; 824 return; 825 } 826 i = 0; 827 for (b = 0; b < 32; b++) 828 if (mask & (1 << b)) { 829 register int bb; 830 831 i = b; 832 for (bb = b+1; bb < 32; bb++) 833 if (!(mask & (1 << bb))) { 834 i = -1; /* noncontig */ 835 break; 836 } 837 break; 838 } 839 if (i == -1) 840 sprintf(dst, "&0x%lx", mask); 841 else 842 sprintf(dst, "/%d", 32-i); 843 } 844 845 /* 846 * Return the name of the network whose address is given. 847 * The address is assumed to be that of a net or subnet, not a host. 848 */ 849 char * 850 netname(u_long in, u_long mask) 851 { 852 char *cp = 0; 853 static char line[MAXHOSTNAMELEN]; 854 struct netent *np = 0; 855 u_long dmask; 856 register u_long i; 857 858 #define NSHIFT(m) ( \ 859 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 860 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 861 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 862 0) 863 864 i = ntohl(in); 865 dmask = forgemask(i); 866 if (!numeric_addr && i) { 867 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 868 if (np == NULL && mask == 0) 869 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 870 if (np != NULL) { 871 cp = np->n_name; 872 trimdomain(cp, strlen(cp)); 873 } 874 } 875 #undef NSHIFT 876 if (cp != NULL) { 877 strncpy(line, cp, sizeof(line) - 1); 878 line[sizeof(line) - 1] = '\0'; 879 } else { 880 switch (dmask) { 881 case IN_CLASSA_NET: 882 if ((i & IN_CLASSA_HOST) == 0) { 883 sprintf(line, "%lu", C(i >> 24)); 884 break; 885 } 886 /* FALLTHROUGH */ 887 case IN_CLASSB_NET: 888 if ((i & IN_CLASSB_HOST) == 0) { 889 sprintf(line, "%lu.%lu", 890 C(i >> 24), C(i >> 16)); 891 break; 892 } 893 /* FALLTHROUGH */ 894 case IN_CLASSC_NET: 895 if ((i & IN_CLASSC_HOST) == 0) { 896 sprintf(line, "%lu.%lu.%lu", 897 C(i >> 24), C(i >> 16), C(i >> 8)); 898 break; 899 } 900 /* FALLTHROUGH */ 901 default: 902 sprintf(line, "%lu.%lu.%lu.%lu", 903 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 904 break; 905 } 906 } 907 domask(line + strlen(line), i, mask); 908 return (line); 909 } 910 911 #ifdef INET6 912 char * 913 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 914 { 915 static char line[MAXHOSTNAMELEN]; 916 u_char *p = (u_char *)mask; 917 u_char *lim; 918 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 919 920 if (mask) { 921 for (masklen = 0, lim = p + 16; p < lim; p++) { 922 switch (*p) { 923 case 0xff: 924 masklen += 8; 925 break; 926 case 0xfe: 927 masklen += 7; 928 break; 929 case 0xfc: 930 masklen += 6; 931 break; 932 case 0xf8: 933 masklen += 5; 934 break; 935 case 0xf0: 936 masklen += 4; 937 break; 938 case 0xe0: 939 masklen += 3; 940 break; 941 case 0xc0: 942 masklen += 2; 943 break; 944 case 0x80: 945 masklen += 1; 946 break; 947 case 0x00: 948 break; 949 default: 950 illegal ++; 951 break; 952 } 953 } 954 if (illegal) 955 fprintf(stderr, "illegal prefixlen\n"); 956 } 957 else 958 masklen = 128; 959 960 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 961 return("default"); 962 963 if (numeric_addr) 964 flag |= NI_NUMERICHOST; 965 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 966 NULL, 0, flag); 967 968 if (numeric_addr) 969 sprintf(&line[strlen(line)], "/%d", masklen); 970 971 return line; 972 } 973 974 char * 975 routename6(struct sockaddr_in6 *sa6) 976 { 977 static char line[MAXHOSTNAMELEN]; 978 int flag = NI_WITHSCOPEID; 979 /* use local variable for safety */ 980 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),}; 981 982 sa6_local.sin6_addr = sa6->sin6_addr; 983 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 984 985 if (numeric_addr) 986 flag |= NI_NUMERICHOST; 987 988 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 989 line, sizeof(line), NULL, 0, flag); 990 991 return line; 992 } 993 #endif /*INET6*/ 994 995 /* 996 * Print routing statistics 997 */ 998 void 999 rt_stats(u_long rtsaddr, u_long rttaddr) 1000 { 1001 struct rtstat rtstat; 1002 int rttrash; 1003 1004 if (rtsaddr == 0) { 1005 printf("rtstat: symbol not in namelist\n"); 1006 return; 1007 } 1008 if (rttaddr == 0) { 1009 printf("rttrash: symbol not in namelist\n"); 1010 return; 1011 } 1012 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 1013 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 1014 printf("routing:\n"); 1015 1016 #define p(f, m) if (rtstat.f || sflag <= 1) \ 1017 printf(m, rtstat.f, plural(rtstat.f)) 1018 1019 p(rts_badredirect, "\t%u bad routing redirect%s\n"); 1020 p(rts_dynamic, "\t%u dynamically created route%s\n"); 1021 p(rts_newgateway, "\t%u new gateway%s due to redirects\n"); 1022 p(rts_unreach, "\t%u destination%s found unreachable\n"); 1023 p(rts_wildcard, "\t%u use%s of a wildcard route\n"); 1024 #undef p 1025 1026 if (rttrash || sflag <= 1) 1027 printf("\t%u route%s not in table but not freed\n", 1028 rttrash, plural(rttrash)); 1029 } 1030 1031 char * 1032 ipx_print(struct sockaddr *sa) 1033 { 1034 u_short port; 1035 struct servent *sp = 0; 1036 char *net = "", *host = ""; 1037 register char *p; 1038 register u_char *q; 1039 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1040 static char mybuf[50]; 1041 char cport[10], chost[15], cnet[15]; 1042 1043 port = ntohs(work.x_port); 1044 1045 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1046 1047 if (port) { 1048 if (sp) 1049 sprintf(mybuf, "*.%s", sp->s_name); 1050 else 1051 sprintf(mybuf, "*.%x", port); 1052 } else 1053 sprintf(mybuf, "*.*"); 1054 1055 return (mybuf); 1056 } 1057 1058 if (ipx_wildnet(work)) 1059 net = "any"; 1060 else if (ipx_nullnet(work)) 1061 net = "*"; 1062 else { 1063 q = work.x_net.c_net; 1064 sprintf(cnet, "%02x%02x%02x%02x", 1065 q[0], q[1], q[2], q[3]); 1066 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1067 continue; 1068 net = p; 1069 } 1070 1071 if (ipx_wildhost(work)) 1072 host = "any"; 1073 else if (ipx_nullhost(work)) 1074 host = "*"; 1075 else { 1076 q = work.x_host.c_host; 1077 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1078 q[0], q[1], q[2], q[3], q[4], q[5]); 1079 for (p = chost; *p == '0' && p < chost + 12; p++) 1080 continue; 1081 host = p; 1082 } 1083 1084 if (port) { 1085 if (strcmp(host, "*") == 0) 1086 host = ""; 1087 if (sp) 1088 snprintf(cport, sizeof(cport), 1089 "%s%s", *host ? "." : "", sp->s_name); 1090 else 1091 snprintf(cport, sizeof(cport), 1092 "%s%x", *host ? "." : "", port); 1093 } else 1094 *cport = 0; 1095 1096 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1097 return(mybuf); 1098 } 1099 1100 char * 1101 ipx_phost(struct sockaddr *sa) 1102 { 1103 register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1104 struct sockaddr_ipx work; 1105 static union ipx_net ipx_zeronet; 1106 char *p; 1107 struct ipx_addr in; 1108 1109 work = *sipx; 1110 in = work.sipx_addr; 1111 1112 work.sipx_addr.x_port = 0; 1113 work.sipx_addr.x_net = ipx_zeronet; 1114 p = ipx_print((struct sockaddr *)&work); 1115 if (strncmp("*.", p, 2) == 0) p += 2; 1116 1117 return(p); 1118 } 1119 1120 #ifdef NS 1121 short ns_nullh[] = {0,0,0}; 1122 short ns_bh[] = {-1,-1,-1}; 1123 1124 char * 1125 ns_print(struct sockaddr *sa) 1126 { 1127 register struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 1128 struct ns_addr work; 1129 union { union ns_net net_e; u_long long_e; } net; 1130 u_short port; 1131 static char mybuf[50], cport[10], chost[25]; 1132 char *host = ""; 1133 register char *p; register u_char *q; 1134 1135 work = sns->sns_addr; 1136 port = ntohs(work.x_port); 1137 work.x_port = 0; 1138 net.net_e = work.x_net; 1139 if (ns_nullhost(work) && net.long_e == 0) { 1140 if (port ) { 1141 sprintf(mybuf, "*.%xH", port); 1142 upHex(mybuf); 1143 } else 1144 sprintf(mybuf, "*.*"); 1145 return (mybuf); 1146 } 1147 1148 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) { 1149 host = "any"; 1150 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 1151 host = "*"; 1152 } else { 1153 q = work.x_host.c_host; 1154 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 1155 q[0], q[1], q[2], q[3], q[4], q[5]); 1156 for (p = chost; *p == '0' && p < chost + 12; p++) 1157 continue; 1158 host = p; 1159 } 1160 if (port) 1161 sprintf(cport, ".%xH", htons(port)); 1162 else 1163 *cport = 0; 1164 1165 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport); 1166 upHex(mybuf); 1167 return(mybuf); 1168 } 1169 1170 char * 1171 ns_phost(struct sockaddr *sa) 1172 { 1173 register struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 1174 struct sockaddr_ns work; 1175 static union ns_net ns_zeronet; 1176 char *p; 1177 1178 work = *sns; 1179 work.sns_addr.x_port = 0; 1180 work.sns_addr.x_net = ns_zeronet; 1181 1182 p = ns_print((struct sockaddr *)&work); 1183 if (strncmp("0H.", p, 3) == 0) 1184 p += 3; 1185 return(p); 1186 } 1187 #endif 1188 1189 void 1190 upHex(char *p0) 1191 { 1192 register char *p = p0; 1193 1194 for (; *p; p++) 1195 switch (*p) { 1196 1197 case 'a': 1198 case 'b': 1199 case 'c': 1200 case 'd': 1201 case 'e': 1202 case 'f': 1203 *p += ('A' - 'a'); 1204 break; 1205 } 1206 } 1207