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 1.5 2004/01/06 03:17:21 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_mklist)) 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 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 664 cp = ether_ntoa((struct ether_addr *) 665 (sdl->sdl_data + sdl->sdl_nlen)); 666 break; 667 } 668 /* FALLTHROUGH */ 669 default: 670 cp = link_ntoa(sdl); 671 break; 672 } 673 break; 674 } 675 676 default: 677 { 678 register u_char *s = (u_char *)sa->sa_data, *slim; 679 680 slim = sa->sa_len + (u_char *) sa; 681 cplim = cp + sizeof(workbuf) - 6; 682 cp += sprintf(cp, "(%d)", sa->sa_family); 683 while (s < slim && cp < cplim) { 684 cp += sprintf(cp, " %02x", *s++); 685 if (s < slim) 686 cp += sprintf(cp, "%02x", *s++); 687 } 688 cp = workbuf; 689 } 690 } 691 692 return (cp); 693 } 694 695 static void 696 p_flags(int f, char *format) 697 { 698 printf(format, fmt_flags(f)); 699 } 700 701 static const char * 702 fmt_flags(int f) 703 { 704 static char name[33]; 705 char *flags; 706 struct bits *p = bits; 707 708 for (flags = name; p->b_mask; p++) 709 if (p->b_mask & f) 710 *flags++ = p->b_val; 711 *flags = '\0'; 712 return (name); 713 } 714 715 static void 716 p_rtentry(struct rtentry *rt) 717 { 718 static struct ifnet ifnet, *lastif; 719 struct rtentry parent; 720 static char buffer[128]; 721 static char prettyname[128]; 722 struct sockaddr *sa; 723 sa_u addr, mask; 724 725 /* 726 * Don't print protocol-cloned routes unless -a. 727 */ 728 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 729 kget(rt->rt_parent, parent); 730 if (parent.rt_flags & RTF_PRCLONING) 731 return; 732 } 733 734 bzero(&addr, sizeof(addr)); 735 if ((sa = kgetsa(rt_key(rt)))) 736 bcopy(sa, &addr, sa->sa_len); 737 bzero(&mask, sizeof(mask)); 738 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 739 bcopy(sa, &mask, sa->sa_len); 740 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 741 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 742 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 743 p_flags(rt->rt_flags, buffer); 744 if (addr.u_sa.sa_family == AF_INET || Wflag) { 745 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 746 wid_use, rt->rt_use); 747 if (Wflag) { 748 if (rt->rt_rmx.rmx_mtu != 0) 749 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 750 else 751 printf("%*s ", wid_mtu, ""); 752 } 753 } 754 if (rt->rt_ifp) { 755 if (rt->rt_ifp != lastif) { 756 kget(rt->rt_ifp, ifnet); 757 lastif = rt->rt_ifp; 758 strlcpy(prettyname, ifnet.if_xname, sizeof(prettyname)); 759 } 760 printf("%*.*s", wid_if, wid_if, prettyname); 761 if (rt->rt_rmx.rmx_expire) { 762 time_t expire_time; 763 764 if ((expire_time = 765 rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0) 766 printf(" %*d", wid_expire, (int)expire_time); 767 } 768 if (rt->rt_nodes[0].rn_dupedkey) 769 printf(" =>"); 770 } 771 putchar('\n'); 772 } 773 774 char * 775 routename(u_long in) 776 { 777 register char *cp; 778 static char line[MAXHOSTNAMELEN]; 779 struct hostent *hp; 780 781 cp = 0; 782 if (!numeric_addr) { 783 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 784 AF_INET); 785 if (hp) { 786 cp = hp->h_name; 787 trimdomain(cp, strlen(cp)); 788 } 789 } 790 if (cp) { 791 strncpy(line, cp, sizeof(line) - 1); 792 line[sizeof(line) - 1] = '\0'; 793 } else { 794 #define C(x) ((x) & 0xff) 795 in = ntohl(in); 796 sprintf(line, "%lu.%lu.%lu.%lu", 797 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 798 } 799 return (line); 800 } 801 802 static u_long 803 forgemask(u_long a) 804 { 805 u_long m; 806 807 if (IN_CLASSA(a)) 808 m = IN_CLASSA_NET; 809 else if (IN_CLASSB(a)) 810 m = IN_CLASSB_NET; 811 else 812 m = IN_CLASSC_NET; 813 return (m); 814 } 815 816 static void 817 domask(char *dst, u_long addr, u_long mask) 818 { 819 register int b, i; 820 821 if (!mask || (forgemask(addr) == mask)) { 822 *dst = '\0'; 823 return; 824 } 825 i = 0; 826 for (b = 0; b < 32; b++) 827 if (mask & (1 << b)) { 828 register int bb; 829 830 i = b; 831 for (bb = b+1; bb < 32; bb++) 832 if (!(mask & (1 << bb))) { 833 i = -1; /* noncontig */ 834 break; 835 } 836 break; 837 } 838 if (i == -1) 839 sprintf(dst, "&0x%lx", mask); 840 else 841 sprintf(dst, "/%d", 32-i); 842 } 843 844 /* 845 * Return the name of the network whose address is given. 846 * The address is assumed to be that of a net or subnet, not a host. 847 */ 848 char * 849 netname(u_long in, u_long mask) 850 { 851 char *cp = 0; 852 static char line[MAXHOSTNAMELEN]; 853 struct netent *np = 0; 854 u_long dmask; 855 register u_long i; 856 857 #define NSHIFT(m) ( \ 858 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 859 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 860 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 861 0) 862 863 i = ntohl(in); 864 dmask = forgemask(i); 865 if (!numeric_addr && i) { 866 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 867 if (np == NULL && mask == 0) 868 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 869 if (np != NULL) { 870 cp = np->n_name; 871 trimdomain(cp, strlen(cp)); 872 } 873 } 874 #undef NSHIFT 875 if (cp != NULL) { 876 strncpy(line, cp, sizeof(line) - 1); 877 line[sizeof(line) - 1] = '\0'; 878 } else { 879 switch (dmask) { 880 case IN_CLASSA_NET: 881 if ((i & IN_CLASSA_HOST) == 0) { 882 sprintf(line, "%lu", C(i >> 24)); 883 break; 884 } 885 /* FALLTHROUGH */ 886 case IN_CLASSB_NET: 887 if ((i & IN_CLASSB_HOST) == 0) { 888 sprintf(line, "%lu.%lu", 889 C(i >> 24), C(i >> 16)); 890 break; 891 } 892 /* FALLTHROUGH */ 893 case IN_CLASSC_NET: 894 if ((i & IN_CLASSC_HOST) == 0) { 895 sprintf(line, "%lu.%lu.%lu", 896 C(i >> 24), C(i >> 16), C(i >> 8)); 897 break; 898 } 899 /* FALLTHROUGH */ 900 default: 901 sprintf(line, "%lu.%lu.%lu.%lu", 902 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 903 break; 904 } 905 } 906 domask(line + strlen(line), i, mask); 907 return (line); 908 } 909 910 #ifdef INET6 911 char * 912 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 913 { 914 static char line[MAXHOSTNAMELEN]; 915 u_char *p = (u_char *)mask; 916 u_char *lim; 917 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 918 919 if (mask) { 920 for (masklen = 0, lim = p + 16; p < lim; p++) { 921 switch (*p) { 922 case 0xff: 923 masklen += 8; 924 break; 925 case 0xfe: 926 masklen += 7; 927 break; 928 case 0xfc: 929 masklen += 6; 930 break; 931 case 0xf8: 932 masklen += 5; 933 break; 934 case 0xf0: 935 masklen += 4; 936 break; 937 case 0xe0: 938 masklen += 3; 939 break; 940 case 0xc0: 941 masklen += 2; 942 break; 943 case 0x80: 944 masklen += 1; 945 break; 946 case 0x00: 947 break; 948 default: 949 illegal ++; 950 break; 951 } 952 } 953 if (illegal) 954 fprintf(stderr, "illegal prefixlen\n"); 955 } 956 else 957 masklen = 128; 958 959 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 960 return("default"); 961 962 if (numeric_addr) 963 flag |= NI_NUMERICHOST; 964 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 965 NULL, 0, flag); 966 967 if (numeric_addr) 968 sprintf(&line[strlen(line)], "/%d", masklen); 969 970 return line; 971 } 972 973 char * 974 routename6(struct sockaddr_in6 *sa6) 975 { 976 static char line[MAXHOSTNAMELEN]; 977 int flag = NI_WITHSCOPEID; 978 /* use local variable for safety */ 979 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),}; 980 981 sa6_local.sin6_addr = sa6->sin6_addr; 982 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 983 984 if (numeric_addr) 985 flag |= NI_NUMERICHOST; 986 987 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 988 line, sizeof(line), NULL, 0, flag); 989 990 return line; 991 } 992 #endif /*INET6*/ 993 994 /* 995 * Print routing statistics 996 */ 997 void 998 rt_stats(u_long rtsaddr, u_long rttaddr) 999 { 1000 struct rtstat rtstat; 1001 int rttrash; 1002 1003 if (rtsaddr == 0) { 1004 printf("rtstat: symbol not in namelist\n"); 1005 return; 1006 } 1007 if (rttaddr == 0) { 1008 printf("rttrash: symbol not in namelist\n"); 1009 return; 1010 } 1011 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 1012 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 1013 printf("routing:\n"); 1014 1015 #define p(f, m) if (rtstat.f || sflag <= 1) \ 1016 printf(m, rtstat.f, plural(rtstat.f)) 1017 1018 p(rts_badredirect, "\t%u bad routing redirect%s\n"); 1019 p(rts_dynamic, "\t%u dynamically created route%s\n"); 1020 p(rts_newgateway, "\t%u new gateway%s due to redirects\n"); 1021 p(rts_unreach, "\t%u destination%s found unreachable\n"); 1022 p(rts_wildcard, "\t%u use%s of a wildcard route\n"); 1023 #undef p 1024 1025 if (rttrash || sflag <= 1) 1026 printf("\t%u route%s not in table but not freed\n", 1027 rttrash, plural(rttrash)); 1028 } 1029 1030 char * 1031 ipx_print(struct sockaddr *sa) 1032 { 1033 u_short port; 1034 struct servent *sp = 0; 1035 char *net = "", *host = ""; 1036 register char *p; 1037 register u_char *q; 1038 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1039 static char mybuf[50]; 1040 char cport[10], chost[15], cnet[15]; 1041 1042 port = ntohs(work.x_port); 1043 1044 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1045 1046 if (port) { 1047 if (sp) 1048 sprintf(mybuf, "*.%s", sp->s_name); 1049 else 1050 sprintf(mybuf, "*.%x", port); 1051 } else 1052 sprintf(mybuf, "*.*"); 1053 1054 return (mybuf); 1055 } 1056 1057 if (ipx_wildnet(work)) 1058 net = "any"; 1059 else if (ipx_nullnet(work)) 1060 net = "*"; 1061 else { 1062 q = work.x_net.c_net; 1063 sprintf(cnet, "%02x%02x%02x%02x", 1064 q[0], q[1], q[2], q[3]); 1065 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1066 continue; 1067 net = p; 1068 } 1069 1070 if (ipx_wildhost(work)) 1071 host = "any"; 1072 else if (ipx_nullhost(work)) 1073 host = "*"; 1074 else { 1075 q = work.x_host.c_host; 1076 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1077 q[0], q[1], q[2], q[3], q[4], q[5]); 1078 for (p = chost; *p == '0' && p < chost + 12; p++) 1079 continue; 1080 host = p; 1081 } 1082 1083 if (port) { 1084 if (strcmp(host, "*") == 0) 1085 host = ""; 1086 if (sp) 1087 snprintf(cport, sizeof(cport), 1088 "%s%s", *host ? "." : "", sp->s_name); 1089 else 1090 snprintf(cport, sizeof(cport), 1091 "%s%x", *host ? "." : "", port); 1092 } else 1093 *cport = 0; 1094 1095 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1096 return(mybuf); 1097 } 1098 1099 char * 1100 ipx_phost(struct sockaddr *sa) 1101 { 1102 register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1103 struct sockaddr_ipx work; 1104 static union ipx_net ipx_zeronet; 1105 char *p; 1106 struct ipx_addr in; 1107 1108 work = *sipx; 1109 in = work.sipx_addr; 1110 1111 work.sipx_addr.x_port = 0; 1112 work.sipx_addr.x_net = ipx_zeronet; 1113 p = ipx_print((struct sockaddr *)&work); 1114 if (strncmp("*.", p, 2) == 0) p += 2; 1115 1116 return(p); 1117 } 1118 1119 #ifdef NS 1120 short ns_nullh[] = {0,0,0}; 1121 short ns_bh[] = {-1,-1,-1}; 1122 1123 char * 1124 ns_print(struct sockaddr *sa) 1125 { 1126 register struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 1127 struct ns_addr work; 1128 union { union ns_net net_e; u_long long_e; } net; 1129 u_short port; 1130 static char mybuf[50], cport[10], chost[25]; 1131 char *host = ""; 1132 register char *p; register u_char *q; 1133 1134 work = sns->sns_addr; 1135 port = ntohs(work.x_port); 1136 work.x_port = 0; 1137 net.net_e = work.x_net; 1138 if (ns_nullhost(work) && net.long_e == 0) { 1139 if (port ) { 1140 sprintf(mybuf, "*.%xH", port); 1141 upHex(mybuf); 1142 } else 1143 sprintf(mybuf, "*.*"); 1144 return (mybuf); 1145 } 1146 1147 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) { 1148 host = "any"; 1149 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 1150 host = "*"; 1151 } else { 1152 q = work.x_host.c_host; 1153 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 1154 q[0], q[1], q[2], q[3], q[4], q[5]); 1155 for (p = chost; *p == '0' && p < chost + 12; p++) 1156 continue; 1157 host = p; 1158 } 1159 if (port) 1160 sprintf(cport, ".%xH", htons(port)); 1161 else 1162 *cport = 0; 1163 1164 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport); 1165 upHex(mybuf); 1166 return(mybuf); 1167 } 1168 1169 char * 1170 ns_phost(struct sockaddr *sa) 1171 { 1172 register struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 1173 struct sockaddr_ns work; 1174 static union ns_net ns_zeronet; 1175 char *p; 1176 1177 work = *sns; 1178 work.sns_addr.x_port = 0; 1179 work.sns_addr.x_net = ns_zeronet; 1180 1181 p = ns_print((struct sockaddr *)&work); 1182 if (strncmp("0H.", p, 3) == 0) 1183 p += 3; 1184 return(p); 1185 } 1186 #endif 1187 1188 void 1189 upHex(char *p0) 1190 { 1191 register char *p = p0; 1192 1193 for (; *p; p++) 1194 switch (*p) { 1195 1196 case 'a': 1197 case 'b': 1198 case 'c': 1199 case 'd': 1200 case 'e': 1201 case 'f': 1202 *p += ('A' - 'a'); 1203 break; 1204 } 1205 } 1206