route.c revision 74262
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 34#ifndef lint 35#if 0 36static char sccsid[] = "From: @(#)route.c 8.6 (Berkeley) 4/28/95"; 37#endif 38static const char rcsid[] = 39 "$FreeBSD: head/usr.bin/netstat/route.c 74262 2001-03-14 20:51:26Z brian $"; 40#endif /* not lint */ 41 42#include <sys/param.h> 43#include <sys/protosw.h> 44#include <sys/socket.h> 45#include <sys/time.h> 46 47#include <net/if.h> 48#include <net/if_var.h> 49#include <net/if_dl.h> 50#include <net/if_types.h> 51#include <net/route.h> 52 53#include <netinet/in.h> 54#include <netipx/ipx.h> 55#include <netatalk/at.h> 56#include <netgraph/ng_socket.h> 57 58#ifdef NS 59#include <netns/ns.h> 60#endif 61 62#include <sys/sysctl.h> 63 64#include <arpa/inet.h> 65#include <libutil.h> 66#include <netdb.h> 67#include <stdio.h> 68#include <stdlib.h> 69#include <string.h> 70#include <unistd.h> 71#include <err.h> 72#include <time.h> 73#include "netstat.h" 74 75#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 76 77 78/* alignment constraint for routing socket */ 79#define ROUNDUP(a) \ 80 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 81#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 82 83/* 84 * Definitions for showing gateway flags. 85 */ 86struct bits { 87 u_long b_mask; 88 char b_val; 89} bits[] = { 90 { RTF_UP, 'U' }, 91 { RTF_GATEWAY, 'G' }, 92 { RTF_HOST, 'H' }, 93 { RTF_REJECT, 'R' }, 94 { RTF_DYNAMIC, 'D' }, 95 { RTF_MODIFIED, 'M' }, 96 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 97 { RTF_CLONING, 'C' }, 98 { RTF_XRESOLVE, 'X' }, 99 { RTF_LLINFO, 'L' }, 100 { RTF_STATIC, 'S' }, 101 { RTF_PROTO1, '1' }, 102 { RTF_PROTO2, '2' }, 103 { RTF_WASCLONED,'W' }, 104 { RTF_PRCLONING,'c' }, 105 { RTF_PROTO3, '3' }, 106 { RTF_BLACKHOLE,'B' }, 107 { RTF_BROADCAST,'b' }, 108 { 0 } 109}; 110 111typedef union { 112 long dummy; /* Helps align structure. */ 113 struct sockaddr u_sa; 114 u_short u_data[128]; 115} sa_u; 116 117static sa_u pt_u; 118 119int do_rtent = 0; 120struct rtentry rtentry; 121struct radix_node rnode; 122struct radix_mask rmask; 123struct radix_node_head *rt_tables[AF_MAX+1]; 124 125int NewTree = 0; 126 127static struct sockaddr *kgetsa __P((struct sockaddr *)); 128static void p_tree __P((struct radix_node *)); 129static void p_rtnode __P((void)); 130static void ntreestuff __P((void)); 131static void np_rtentry __P((struct rt_msghdr *)); 132static void p_sockaddr __P((struct sockaddr *, struct sockaddr *, int, int)); 133static void p_flags __P((int, char *)); 134static void p_rtentry __P((struct rtentry *)); 135static u_long forgemask __P((u_long)); 136static void domask __P((char *, u_long, u_long)); 137 138#ifdef INET6 139char *routename6 __P((struct sockaddr_in6 *)); 140char *netname6 __P((struct sockaddr_in6 *, struct in6_addr *)); 141#endif /*INET6*/ 142 143/* 144 * Print routing tables. 145 */ 146void 147routepr(rtree) 148 u_long rtree; 149{ 150 struct radix_node_head *rnh, head; 151 int i; 152 153 printf("Routing tables\n"); 154 155 if (Aflag == 0 && NewTree) 156 ntreestuff(); 157 else { 158 if (rtree == 0) { 159 printf("rt_tables: symbol not in namelist\n"); 160 return; 161 } 162 163 kget(rtree, rt_tables); 164 for (i = 0; i <= AF_MAX; i++) { 165 if ((rnh = rt_tables[i]) == 0) 166 continue; 167 kget(rnh, head); 168 if (i == AF_UNSPEC) { 169 if (Aflag && af == 0) { 170 printf("Netmasks:\n"); 171 p_tree(head.rnh_treetop); 172 } 173 } else if (af == AF_UNSPEC || af == i) { 174 pr_family(i); 175 do_rtent = 1; 176 pr_rthdr(i); 177 p_tree(head.rnh_treetop); 178 } 179 } 180 } 181} 182 183/* 184 * Print address family header before a section of the routing table. 185 */ 186void 187pr_family(af) 188 int af; 189{ 190 char *afname; 191 192 switch (af) { 193 case AF_INET: 194 afname = "Internet"; 195 break; 196#ifdef INET6 197 case AF_INET6: 198 afname = "Internet6"; 199 break; 200#endif /*INET6*/ 201 case AF_IPX: 202 afname = "IPX"; 203 break; 204#ifdef NS 205 case AF_NS: 206 afname = "XNS"; 207 break; 208#endif 209 case AF_ISO: 210 afname = "ISO"; 211 break; 212 case AF_APPLETALK: 213 afname = "AppleTalk"; 214 break; 215 case AF_CCITT: 216 afname = "X.25"; 217 break; 218 case AF_NETGRAPH: 219 afname = "Netgraph"; 220 break; 221 default: 222 afname = NULL; 223 break; 224 } 225 if (afname) 226 printf("\n%s:\n", afname); 227 else 228 printf("\nProtocol Family %d:\n", af); 229} 230 231/* column widths; each followed by one space */ 232#ifndef INET6 233#define WID_DST(af) 18 /* width of destination column */ 234#define WID_GW(af) 18 /* width of gateway column */ 235#else 236#define WID_DST(af) \ 237 ((af) == AF_INET6 ? (lflag ? 39 : (nflag ? 33: 18)) : 18) 238#define WID_GW(af) \ 239 ((af) == AF_INET6 ? (lflag ? 31 : (nflag ? 29 : 18)) : 18) 240#endif /*INET6*/ 241 242/* 243 * Print header for routing table columns. 244 */ 245void 246pr_rthdr(af) 247 int af; 248{ 249 250 if (Aflag) 251 printf("%-8.8s ","Address"); 252 if (af == AF_INET || lflag) 253 printf("%-*.*s %-*.*s %-6.6s %6.6s%8.8s %8.8s %6s\n", 254 WID_DST(af), WID_DST(af), "Destination", 255 WID_GW(af), WID_GW(af), "Gateway", 256 "Flags", "Refs", "Use", "Netif", "Expire"); 257 else 258 printf("%-*.*s %-*.*s %-6.6s %8.8s %6s\n", 259 WID_DST(af), WID_DST(af), "Destination", 260 WID_GW(af), WID_GW(af), "Gateway", 261 "Flags", "Netif", "Expire"); 262} 263 264static struct sockaddr * 265kgetsa(dst) 266 register struct sockaddr *dst; 267{ 268 269 kget(dst, pt_u.u_sa); 270 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 271 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 272 return (&pt_u.u_sa); 273} 274 275static void 276p_tree(rn) 277 struct radix_node *rn; 278{ 279 280again: 281 kget(rn, rnode); 282 if (rnode.rn_bit < 0) { 283 if (Aflag) 284 printf("%-8.8lx ", (u_long)rn); 285 if (rnode.rn_flags & RNF_ROOT) { 286 if (Aflag) 287 printf("(root node)%s", 288 rnode.rn_dupedkey ? " =>\n" : "\n"); 289 } else if (do_rtent) { 290 kget(rn, rtentry); 291 p_rtentry(&rtentry); 292 if (Aflag) 293 p_rtnode(); 294 } else { 295 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 296 NULL, 0, 44); 297 putchar('\n'); 298 } 299 if ((rn = rnode.rn_dupedkey)) 300 goto again; 301 } else { 302 if (Aflag && do_rtent) { 303 printf("%-8.8lx ", (u_long)rn); 304 p_rtnode(); 305 } 306 rn = rnode.rn_right; 307 p_tree(rnode.rn_left); 308 p_tree(rn); 309 } 310} 311 312char nbuf[20]; 313 314static void 315p_rtnode() 316{ 317 struct radix_mask *rm = rnode.rn_mklist; 318 319 if (rnode.rn_bit < 0) { 320 if (rnode.rn_mask) { 321 printf("\t mask "); 322 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 323 NULL, 0, -1); 324 } else if (rm == 0) 325 return; 326 } else { 327 sprintf(nbuf, "(%d)", rnode.rn_bit); 328 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 329 } 330 while (rm) { 331 kget(rm, rmask); 332 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 333 printf(" mk = %8.8lx {(%d),%s", 334 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 335 if (rmask.rm_flags & RNF_NORMAL) { 336 struct radix_node rnode_aux; 337 printf(" <normal>, "); 338 kget(rmask.rm_leaf, rnode_aux); 339 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 340 NULL, 0, -1); 341 } else 342 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 343 NULL, 0, -1); 344 putchar('}'); 345 if ((rm = rmask.rm_mklist)) 346 printf(" ->"); 347 } 348 putchar('\n'); 349} 350 351static void 352ntreestuff() 353{ 354 size_t needed; 355 int mib[6]; 356 char *buf, *next, *lim; 357 register struct rt_msghdr *rtm; 358 359 mib[0] = CTL_NET; 360 mib[1] = PF_ROUTE; 361 mib[2] = 0; 362 mib[3] = 0; 363 mib[4] = NET_RT_DUMP; 364 mib[5] = 0; 365 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 366 err(1, "sysctl: net.route.0.0.dump estimate"); 367 } 368 369 if ((buf = malloc(needed)) == 0) { 370 err(2, "malloc(%lu)", (unsigned long)needed); 371 } 372 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 373 err(1, "sysctl: net.route.0.0.dump"); 374 } 375 lim = buf + needed; 376 for (next = buf; next < lim; next += rtm->rtm_msglen) { 377 rtm = (struct rt_msghdr *)next; 378 np_rtentry(rtm); 379 } 380} 381 382static void 383np_rtentry(rtm) 384 register struct rt_msghdr *rtm; 385{ 386 register struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 387#ifdef notdef 388 static int masks_done, banner_printed; 389#endif 390 static int old_af; 391 int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 392 393#ifdef notdef 394 /* for the moment, netmasks are skipped over */ 395 if (!banner_printed) { 396 printf("Netmasks:\n"); 397 banner_printed = 1; 398 } 399 if (masks_done == 0) { 400 if (rtm->rtm_addrs != RTA_DST ) { 401 masks_done = 1; 402 af = sa->sa_family; 403 } 404 } else 405#endif 406 af = sa->sa_family; 407 if (af != old_af) { 408 pr_family(af); 409 old_af = af; 410 } 411 if (rtm->rtm_addrs == RTA_DST) 412 p_sockaddr(sa, NULL, 0, 36); 413 else { 414 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 415 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 416 p_sockaddr(sa, NULL, 0, 18); 417 } 418 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 419 putchar('\n'); 420} 421 422static void 423p_sockaddr(sa, mask, flags, width) 424 struct sockaddr *sa, *mask; 425 int flags, width; 426{ 427 char workbuf[128], *cplim; 428 register char *cp = workbuf; 429 430 switch(sa->sa_family) { 431 case AF_INET: 432 { 433 register struct sockaddr_in *sin = (struct sockaddr_in *)sa; 434 435 if ((sin->sin_addr.s_addr == INADDR_ANY) && 436 mask && 437 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 438 ==0L) 439 cp = "default" ; 440 else if (flags & RTF_HOST) 441 cp = routename(sin->sin_addr.s_addr); 442 else if (mask) 443 cp = netname(sin->sin_addr.s_addr, 444 ntohl(((struct sockaddr_in *)mask) 445 ->sin_addr.s_addr)); 446 else 447 cp = netname(sin->sin_addr.s_addr, 0L); 448 break; 449 } 450 451#ifdef INET6 452 case AF_INET6: 453 { 454 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 455 struct in6_addr *in6 = &sa6->sin6_addr; 456 457 /* 458 * XXX: This is a special workaround for KAME kernels. 459 * sin6_scope_id field of SA should be set in the future. 460 */ 461 if (IN6_IS_ADDR_LINKLOCAL(in6) || 462 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 463 /* XXX: override is ok? */ 464 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 465 *(u_short *)&in6->s6_addr[2] = 0; 466 } 467 468 if (flags & RTF_HOST) 469 cp = routename6(sa6); 470 else if (mask) 471 cp = netname6(sa6, 472 &((struct sockaddr_in6 *)mask)->sin6_addr); 473 else { 474 cp = netname6(sa6, NULL); 475 } 476 break; 477 } 478#endif /*INET6*/ 479 480 case AF_IPX: 481 { 482 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 483 if (ipx_nullnet(satoipx_addr(work))) 484 cp = "default"; 485 else 486 cp = ipx_print(sa); 487 break; 488 } 489 case AF_APPLETALK: 490 { 491 if (!(flags & RTF_HOST) && mask) 492 cp = atalk_print2(sa,mask,9); 493 else 494 cp = atalk_print(sa,11); 495 break; 496 } 497 case AF_NETGRAPH: 498 { 499 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 500 break; 501 } 502#ifdef NS 503 case AF_NS: 504 cp = ns_print(sa); 505 break; 506#endif 507 508 case AF_LINK: 509 { 510 register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 511 512 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 513 sdl->sdl_slen == 0) 514 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 515 else 516 switch (sdl->sdl_type) { 517 518 case IFT_ETHER: 519 { 520 register int i; 521 register u_char *lla = (u_char *)sdl->sdl_data + 522 sdl->sdl_nlen; 523 524 cplim = ""; 525 for (i = 0; i < sdl->sdl_alen; i++, lla++) { 526 cp += sprintf(cp, "%s%x", cplim, *lla); 527 cplim = ":"; 528 } 529 cp = workbuf; 530 break; 531 } 532 533 default: 534 cp = link_ntoa(sdl); 535 break; 536 } 537 break; 538 } 539 540 default: 541 { 542 register u_char *s = (u_char *)sa->sa_data, *slim; 543 544 slim = sa->sa_len + (u_char *) sa; 545 cplim = cp + sizeof(workbuf) - 6; 546 cp += sprintf(cp, "(%d)", sa->sa_family); 547 while (s < slim && cp < cplim) { 548 cp += sprintf(cp, " %02x", *s++); 549 if (s < slim) 550 cp += sprintf(cp, "%02x", *s++); 551 } 552 cp = workbuf; 553 } 554 } 555 if (width < 0 ) 556 printf("%s ", cp); 557 else { 558 if (nflag) 559 printf("%-*s ", width, cp); 560 else 561 printf("%-*.*s ", width, width, cp); 562 } 563} 564 565static void 566p_flags(f, format) 567 register int f; 568 char *format; 569{ 570 char name[33], *flags; 571 register struct bits *p = bits; 572 573 for (flags = name; p->b_mask; p++) 574 if (p->b_mask & f) 575 *flags++ = p->b_val; 576 *flags = '\0'; 577 printf(format, name); 578} 579 580static void 581p_rtentry(rt) 582 register struct rtentry *rt; 583{ 584 static struct ifnet ifnet, *lastif; 585 static char name[16]; 586 static char prettyname[9]; 587 struct sockaddr *sa; 588 sa_u addr, mask; 589 590 /* 591 * Don't print protocol-cloned routes unless -a. 592 */ 593 if (rt->rt_parent && !aflag) 594 return; 595 596 bzero(&addr, sizeof(addr)); 597 if ((sa = kgetsa(rt_key(rt)))) 598 bcopy(sa, &addr, sa->sa_len); 599 bzero(&mask, sizeof(mask)); 600 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 601 bcopy(sa, &mask, sa->sa_len); 602 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, 603 WID_DST(addr.u_sa.sa_family)); 604 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, 605 WID_GW(addr.u_sa.sa_family)); 606 p_flags(rt->rt_flags, "%-6.6s "); 607 if (addr.u_sa.sa_family == AF_INET || lflag) 608 printf("%6ld %8ld ", rt->rt_refcnt, rt->rt_use); 609 if (rt->rt_ifp) { 610 if (rt->rt_ifp != lastif) { 611 kget(rt->rt_ifp, ifnet); 612 kread((u_long)ifnet.if_name, name, 16); 613 lastif = rt->rt_ifp; 614 snprintf(prettyname, sizeof prettyname, 615 "%s%d", name, ifnet.if_unit); 616 } 617 printf("%8.8s", prettyname); 618 if (rt->rt_rmx.rmx_expire) { 619 time_t expire_time; 620 621 if ((expire_time = 622 rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0) 623 printf(" %6d%s", (int)expire_time, 624 rt->rt_nodes[0].rn_dupedkey ? " =>" : ""); 625 else 626 goto ifandkey; 627 } else if (rt->rt_nodes[0].rn_dupedkey) { 628ifandkey:; 629 printf(" =>"); 630 } 631 632 } 633 putchar('\n'); 634} 635 636char * 637routename(in) 638 u_long in; 639{ 640 register char *cp; 641 static char line[MAXHOSTNAMELEN]; 642 struct hostent *hp; 643 644 cp = 0; 645 if (!nflag) { 646 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 647 AF_INET); 648 if (hp) { 649 cp = hp->h_name; 650 trimdomain(cp, strlen(cp)); 651 } 652 } 653 if (cp) { 654 strncpy(line, cp, sizeof(line) - 1); 655 line[sizeof(line) - 1] = '\0'; 656 } else { 657#define C(x) ((x) & 0xff) 658 in = ntohl(in); 659 sprintf(line, "%lu.%lu.%lu.%lu", 660 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 661 } 662 return (line); 663} 664 665static u_long 666forgemask(a) 667 u_long a; 668{ 669 u_long m; 670 671 if (IN_CLASSA(a)) 672 m = IN_CLASSA_NET; 673 else if (IN_CLASSB(a)) 674 m = IN_CLASSB_NET; 675 else 676 m = IN_CLASSC_NET; 677 return (m); 678} 679 680static void 681domask(dst, addr, mask) 682 char *dst; 683 u_long addr, mask; 684{ 685 register int b, i; 686 687 if (!mask || (forgemask(addr) == mask)) { 688 *dst = '\0'; 689 return; 690 } 691 i = 0; 692 for (b = 0; b < 32; b++) 693 if (mask & (1 << b)) { 694 register int bb; 695 696 i = b; 697 for (bb = b+1; bb < 32; bb++) 698 if (!(mask & (1 << bb))) { 699 i = -1; /* noncontig */ 700 break; 701 } 702 break; 703 } 704 if (i == -1) 705 sprintf(dst, "&0x%lx", mask); 706 else 707 sprintf(dst, "/%d", 32-i); 708} 709 710/* 711 * Return the name of the network whose address is given. 712 * The address is assumed to be that of a net or subnet, not a host. 713 */ 714char * 715netname(in, mask) 716 u_long in, mask; 717{ 718 char *cp = 0; 719 static char line[MAXHOSTNAMELEN]; 720 struct netent *np = 0; 721 u_long net, omask, dmask; 722 register u_long i; 723 724 i = ntohl(in); 725 omask = mask; 726 if (!nflag && i) { 727 dmask = forgemask(i); 728 net = i & dmask; 729 if (!(np = getnetbyaddr(i, AF_INET)) && net != i) 730 np = getnetbyaddr(net, AF_INET); 731 if (np) { 732 cp = np->n_name; 733 trimdomain(cp, strlen(cp)); 734 } 735 } 736 if (cp) 737 strncpy(line, cp, sizeof(line) - 1); 738 else if ((i & 0xffffff) == 0) 739 sprintf(line, "%lu", C(i >> 24)); 740 else if ((i & 0xffff) == 0) 741 sprintf(line, "%lu.%lu", C(i >> 24) , C(i >> 16)); 742 else if ((i & 0xff) == 0) 743 sprintf(line, "%lu.%lu.%lu", C(i >> 24), C(i >> 16), C(i >> 8)); 744 else 745 sprintf(line, "%lu.%lu.%lu.%lu", C(i >> 24), 746 C(i >> 16), C(i >> 8), C(i)); 747 domask(line+strlen(line), i, omask); 748 return (line); 749} 750 751#ifdef INET6 752char * 753netname6(sa6, mask) 754 struct sockaddr_in6 *sa6; 755 struct in6_addr *mask; 756{ 757 static char line[MAXHOSTNAMELEN]; 758 u_char *p = (u_char *)mask; 759 u_char *lim; 760 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 761 762 if (mask) { 763 for (masklen = 0, lim = p + 16; p < lim; p++) { 764 switch (*p) { 765 case 0xff: 766 masklen += 8; 767 break; 768 case 0xfe: 769 masklen += 7; 770 break; 771 case 0xfc: 772 masklen += 6; 773 break; 774 case 0xf8: 775 masklen += 5; 776 break; 777 case 0xf0: 778 masklen += 4; 779 break; 780 case 0xe0: 781 masklen += 3; 782 break; 783 case 0xc0: 784 masklen += 2; 785 break; 786 case 0x80: 787 masklen += 1; 788 break; 789 case 0x00: 790 break; 791 default: 792 illegal ++; 793 break; 794 } 795 } 796 if (illegal) 797 fprintf(stderr, "illegal prefixlen\n"); 798 } 799 else 800 masklen = 128; 801 802 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 803 return("default"); 804 805 if (nflag) 806 flag |= NI_NUMERICHOST; 807 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 808 NULL, 0, flag); 809 810 if (nflag) 811 sprintf(&line[strlen(line)], "/%d", masklen); 812 813 return line; 814} 815 816char * 817routename6(sa6) 818 struct sockaddr_in6 *sa6; 819{ 820 static char line[MAXHOSTNAMELEN]; 821 int flag = NI_WITHSCOPEID; 822 /* use local variable for safety */ 823 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),}; 824 825 sa6_local.sin6_addr = sa6->sin6_addr; 826 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 827 828 if (nflag) 829 flag |= NI_NUMERICHOST; 830 831 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 832 line, sizeof(line), NULL, 0, flag); 833 834 return line; 835} 836#endif /*INET6*/ 837 838/* 839 * Print routing statistics 840 */ 841void 842rt_stats(off) 843 u_long off; 844{ 845 struct rtstat rtstat; 846 847 if (off == 0) { 848 printf("rtstat: symbol not in namelist\n"); 849 return; 850 } 851 kread(off, (char *)&rtstat, sizeof (rtstat)); 852 printf("routing:\n"); 853 printf("\t%u bad routing redirect%s\n", 854 rtstat.rts_badredirect, plural(rtstat.rts_badredirect)); 855 printf("\t%u dynamically created route%s\n", 856 rtstat.rts_dynamic, plural(rtstat.rts_dynamic)); 857 printf("\t%u new gateway%s due to redirects\n", 858 rtstat.rts_newgateway, plural(rtstat.rts_newgateway)); 859 printf("\t%u destination%s found unreachable\n", 860 rtstat.rts_unreach, plural(rtstat.rts_unreach)); 861 printf("\t%u use%s of a wildcard route\n", 862 rtstat.rts_wildcard, plural(rtstat.rts_wildcard)); 863} 864 865char * 866ipx_print(sa) 867 register struct sockaddr *sa; 868{ 869 u_short port; 870 struct servent *sp = 0; 871 char *net = "", *host = ""; 872 register char *p; 873 register u_char *q; 874 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 875 static char mybuf[50]; 876 char cport[10], chost[15], cnet[15]; 877 878 port = ntohs(work.x_port); 879 880 if (ipx_nullnet(work) && ipx_nullhost(work)) { 881 882 if (port) { 883 if (sp) 884 sprintf(mybuf, "*.%s", sp->s_name); 885 else 886 sprintf(mybuf, "*.%x", port); 887 } else 888 sprintf(mybuf, "*.*"); 889 890 return (mybuf); 891 } 892 893 if (ipx_wildnet(work)) 894 net = "any"; 895 else if (ipx_nullnet(work)) 896 net = "*"; 897 else { 898 q = work.x_net.c_net; 899 sprintf(cnet, "%02x%02x%02x%02x", 900 q[0], q[1], q[2], q[3]); 901 for (p = cnet; *p == '0' && p < cnet + 8; p++) 902 continue; 903 net = p; 904 } 905 906 if (ipx_wildhost(work)) 907 host = "any"; 908 else if (ipx_nullhost(work)) 909 host = "*"; 910 else { 911 q = work.x_host.c_host; 912 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 913 q[0], q[1], q[2], q[3], q[4], q[5]); 914 for (p = chost; *p == '0' && p < chost + 12; p++) 915 continue; 916 host = p; 917 } 918 919 if (port) { 920 if (strcmp(host, "*") == 0) 921 host = ""; 922 if (sp) 923 snprintf(cport, sizeof(cport), 924 "%s%s", *host ? "." : "", sp->s_name); 925 else 926 snprintf(cport, sizeof(cport), 927 "%s%x", *host ? "." : "", port); 928 } else 929 *cport = 0; 930 931 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 932 return(mybuf); 933} 934 935char * 936ipx_phost(sa) 937 struct sockaddr *sa; 938{ 939 register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 940 struct sockaddr_ipx work; 941 static union ipx_net ipx_zeronet; 942 char *p; 943 struct ipx_addr in; 944 945 work = *sipx; 946 in = work.sipx_addr; 947 948 work.sipx_addr.x_port = 0; 949 work.sipx_addr.x_net = ipx_zeronet; 950 p = ipx_print((struct sockaddr *)&work); 951 if (strncmp("*.", p, 2) == 0) p += 2; 952 953 return(p); 954} 955 956#ifdef NS 957short ns_nullh[] = {0,0,0}; 958short ns_bh[] = {-1,-1,-1}; 959 960char * 961ns_print(sa) 962 register struct sockaddr *sa; 963{ 964 register struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 965 struct ns_addr work; 966 union { union ns_net net_e; u_long long_e; } net; 967 u_short port; 968 static char mybuf[50], cport[10], chost[25]; 969 char *host = ""; 970 register char *p; register u_char *q; 971 972 work = sns->sns_addr; 973 port = ntohs(work.x_port); 974 work.x_port = 0; 975 net.net_e = work.x_net; 976 if (ns_nullhost(work) && net.long_e == 0) { 977 if (port ) { 978 sprintf(mybuf, "*.%xH", port); 979 upHex(mybuf); 980 } else 981 sprintf(mybuf, "*.*"); 982 return (mybuf); 983 } 984 985 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) { 986 host = "any"; 987 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 988 host = "*"; 989 } else { 990 q = work.x_host.c_host; 991 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 992 q[0], q[1], q[2], q[3], q[4], q[5]); 993 for (p = chost; *p == '0' && p < chost + 12; p++) 994 continue; 995 host = p; 996 } 997 if (port) 998 sprintf(cport, ".%xH", htons(port)); 999 else 1000 *cport = 0; 1001 1002 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport); 1003 upHex(mybuf); 1004 return(mybuf); 1005} 1006 1007char * 1008ns_phost(sa) 1009 struct sockaddr *sa; 1010{ 1011 register struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 1012 struct sockaddr_ns work; 1013 static union ns_net ns_zeronet; 1014 char *p; 1015 1016 work = *sns; 1017 work.sns_addr.x_port = 0; 1018 work.sns_addr.x_net = ns_zeronet; 1019 1020 p = ns_print((struct sockaddr *)&work); 1021 if (strncmp("0H.", p, 3) == 0) 1022 p += 3; 1023 return(p); 1024} 1025#endif 1026 1027void 1028upHex(p0) 1029 char *p0; 1030{ 1031 register char *p = p0; 1032 1033 for (; *p; p++) 1034 switch (*p) { 1035 1036 case 'a': 1037 case 'b': 1038 case 'c': 1039 case 'd': 1040 case 'e': 1041 case 'f': 1042 *p += ('A' - 'a'); 1043 break; 1044 } 1045} 1046