route.c revision 78245
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 78245 2001-06-15 01:53:05Z assar $"; 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(u_long rtree) 148{ 149 struct radix_node_head *rnh, head; 150 int i; 151 152 printf("Routing tables\n"); 153 154 if (Aflag == 0 && NewTree) 155 ntreestuff(); 156 else { 157 if (rtree == 0) { 158 printf("rt_tables: symbol not in namelist\n"); 159 return; 160 } 161 162 kget(rtree, rt_tables); 163 for (i = 0; i <= AF_MAX; i++) { 164 if ((rnh = rt_tables[i]) == 0) 165 continue; 166 kget(rnh, head); 167 if (i == AF_UNSPEC) { 168 if (Aflag && af == 0) { 169 printf("Netmasks:\n"); 170 p_tree(head.rnh_treetop); 171 } 172 } else if (af == AF_UNSPEC || af == i) { 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 */ 185void 186pr_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(af) 18 /* width of destination column */ 232#define WID_GW(af) 18 /* width of gateway column */ 233#define WID_IF(af) 6 /* width of netif column */ 234#else 235#define WID_DST(af) \ 236 ((af) == AF_INET6 ? (lflag ? 39 : (numeric_addr ? 33: 18)) : 18) 237#define WID_GW(af) \ 238 ((af) == AF_INET6 ? (lflag ? 31 : (numeric_addr ? 29 : 18)) : 18) 239#define WID_IF(af) ((af) == AF_INET6 ? 8 : 6) 240#endif /*INET6*/ 241 242/* 243 * Print header for routing table columns. 244 */ 245void 246pr_rthdr(int af) 247{ 248 249 if (Aflag) 250 printf("%-8.8s ","Address"); 251 if (af == AF_INET || lflag) 252 if (lflag) 253 printf("%-*.*s %-*.*s %-6.6s %6.6s%8.8s %5.5s %*.*s %6s\n", 254 WID_DST(af), WID_DST(af), "Destination", 255 WID_GW(af), WID_GW(af), "Gateway", 256 "Flags", "Refs", "Use", "Mtu", 257 WID_IF(af), WID_IF(af), "Netif", "Expire"); 258 else 259 printf("%-*.*s %-*.*s %-6.6s %6.6s%8.8s %8.8s %6s\n", 260 WID_DST(af), WID_DST(af), "Destination", 261 WID_GW(af), WID_GW(af), "Gateway", 262 "Flags", "Refs", "Use", "Netif", "Expire"); 263 else 264 printf("%-*.*s %-*.*s %-6.6s %8.8s %6s\n", 265 WID_DST(af), WID_DST(af), "Destination", 266 WID_GW(af), WID_GW(af), "Gateway", 267 "Flags", "Netif", "Expire"); 268} 269 270static struct sockaddr * 271kgetsa(struct sockaddr *dst) 272{ 273 274 kget(dst, pt_u.u_sa); 275 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 276 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 277 return (&pt_u.u_sa); 278} 279 280static void 281p_tree(struct radix_node *rn) 282{ 283 284again: 285 kget(rn, rnode); 286 if (rnode.rn_bit < 0) { 287 if (Aflag) 288 printf("%-8.8lx ", (u_long)rn); 289 if (rnode.rn_flags & RNF_ROOT) { 290 if (Aflag) 291 printf("(root node)%s", 292 rnode.rn_dupedkey ? " =>\n" : "\n"); 293 } else if (do_rtent) { 294 kget(rn, rtentry); 295 p_rtentry(&rtentry); 296 if (Aflag) 297 p_rtnode(); 298 } else { 299 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 300 NULL, 0, 44); 301 putchar('\n'); 302 } 303 if ((rn = rnode.rn_dupedkey)) 304 goto again; 305 } else { 306 if (Aflag && do_rtent) { 307 printf("%-8.8lx ", (u_long)rn); 308 p_rtnode(); 309 } 310 rn = rnode.rn_right; 311 p_tree(rnode.rn_left); 312 p_tree(rn); 313 } 314} 315 316char nbuf[20]; 317 318static void 319p_rtnode(void) 320{ 321 struct radix_mask *rm = rnode.rn_mklist; 322 323 if (rnode.rn_bit < 0) { 324 if (rnode.rn_mask) { 325 printf("\t mask "); 326 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 327 NULL, 0, -1); 328 } else if (rm == 0) 329 return; 330 } else { 331 sprintf(nbuf, "(%d)", rnode.rn_bit); 332 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 333 } 334 while (rm) { 335 kget(rm, rmask); 336 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 337 printf(" mk = %8.8lx {(%d),%s", 338 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 339 if (rmask.rm_flags & RNF_NORMAL) { 340 struct radix_node rnode_aux; 341 printf(" <normal>, "); 342 kget(rmask.rm_leaf, rnode_aux); 343 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 344 NULL, 0, -1); 345 } else 346 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 347 NULL, 0, -1); 348 putchar('}'); 349 if ((rm = rmask.rm_mklist)) 350 printf(" ->"); 351 } 352 putchar('\n'); 353} 354 355static void 356ntreestuff(void) 357{ 358 size_t needed; 359 int mib[6]; 360 char *buf, *next, *lim; 361 register struct rt_msghdr *rtm; 362 363 mib[0] = CTL_NET; 364 mib[1] = PF_ROUTE; 365 mib[2] = 0; 366 mib[3] = 0; 367 mib[4] = NET_RT_DUMP; 368 mib[5] = 0; 369 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 370 err(1, "sysctl: net.route.0.0.dump estimate"); 371 } 372 373 if ((buf = malloc(needed)) == 0) { 374 err(2, "malloc(%lu)", (unsigned long)needed); 375 } 376 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 377 err(1, "sysctl: net.route.0.0.dump"); 378 } 379 lim = buf + needed; 380 for (next = buf; next < lim; next += rtm->rtm_msglen) { 381 rtm = (struct rt_msghdr *)next; 382 np_rtentry(rtm); 383 } 384} 385 386static void 387np_rtentry(struct rt_msghdr *rtm) 388{ 389 register struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 390#ifdef notdef 391 static int masks_done, banner_printed; 392#endif 393 static int old_af; 394 int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 395 396#ifdef notdef 397 /* for the moment, netmasks are skipped over */ 398 if (!banner_printed) { 399 printf("Netmasks:\n"); 400 banner_printed = 1; 401 } 402 if (masks_done == 0) { 403 if (rtm->rtm_addrs != RTA_DST ) { 404 masks_done = 1; 405 af = sa->sa_family; 406 } 407 } else 408#endif 409 af = sa->sa_family; 410 if (af != old_af) { 411 pr_family(af); 412 old_af = af; 413 } 414 if (rtm->rtm_addrs == RTA_DST) 415 p_sockaddr(sa, NULL, 0, 36); 416 else { 417 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 418 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 419 p_sockaddr(sa, NULL, 0, 18); 420 } 421 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 422 putchar('\n'); 423} 424 425static void 426p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 427{ 428 char workbuf[128], *cplim; 429 register char *cp = workbuf; 430 431 switch(sa->sa_family) { 432 case AF_INET: 433 { 434 register struct sockaddr_in *sin = (struct sockaddr_in *)sa; 435 436 if ((sin->sin_addr.s_addr == INADDR_ANY) && 437 mask && 438 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 439 ==0L) 440 cp = "default" ; 441 else if (flags & RTF_HOST) 442 cp = routename(sin->sin_addr.s_addr); 443 else if (mask) 444 cp = netname(sin->sin_addr.s_addr, 445 ntohl(((struct sockaddr_in *)mask) 446 ->sin_addr.s_addr)); 447 else 448 cp = netname(sin->sin_addr.s_addr, 0L); 449 break; 450 } 451 452#ifdef INET6 453 case AF_INET6: 454 { 455 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 456 struct in6_addr *in6 = &sa6->sin6_addr; 457 458 /* 459 * XXX: This is a special workaround for KAME kernels. 460 * sin6_scope_id field of SA should be set in the future. 461 */ 462 if (IN6_IS_ADDR_LINKLOCAL(in6) || 463 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 464 /* XXX: override is ok? */ 465 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 466 *(u_short *)&in6->s6_addr[2] = 0; 467 } 468 469 if (flags & RTF_HOST) 470 cp = routename6(sa6); 471 else if (mask) 472 cp = netname6(sa6, 473 &((struct sockaddr_in6 *)mask)->sin6_addr); 474 else { 475 cp = netname6(sa6, NULL); 476 } 477 break; 478 } 479#endif /*INET6*/ 480 481 case AF_IPX: 482 { 483 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 484 if (ipx_nullnet(satoipx_addr(work))) 485 cp = "default"; 486 else 487 cp = ipx_print(sa); 488 break; 489 } 490 case AF_APPLETALK: 491 { 492 if (!(flags & RTF_HOST) && mask) 493 cp = atalk_print2(sa,mask,9); 494 else 495 cp = atalk_print(sa,11); 496 break; 497 } 498 case AF_NETGRAPH: 499 { 500 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 501 break; 502 } 503#ifdef NS 504 case AF_NS: 505 cp = ns_print(sa); 506 break; 507#endif 508 509 case AF_LINK: 510 { 511 register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 512 513 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 514 sdl->sdl_slen == 0) 515 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 516 else 517 switch (sdl->sdl_type) { 518 519 case IFT_ETHER: 520 { 521 register int i; 522 register u_char *lla = (u_char *)sdl->sdl_data + 523 sdl->sdl_nlen; 524 525 cplim = ""; 526 for (i = 0; i < sdl->sdl_alen; i++, lla++) { 527 cp += sprintf(cp, "%s%x", cplim, *lla); 528 cplim = ":"; 529 } 530 cp = workbuf; 531 break; 532 } 533 534 default: 535 cp = link_ntoa(sdl); 536 break; 537 } 538 break; 539 } 540 541 default: 542 { 543 register u_char *s = (u_char *)sa->sa_data, *slim; 544 545 slim = sa->sa_len + (u_char *) sa; 546 cplim = cp + sizeof(workbuf) - 6; 547 cp += sprintf(cp, "(%d)", sa->sa_family); 548 while (s < slim && cp < cplim) { 549 cp += sprintf(cp, " %02x", *s++); 550 if (s < slim) 551 cp += sprintf(cp, "%02x", *s++); 552 } 553 cp = workbuf; 554 } 555 } 556 if (width < 0 ) 557 printf("%s ", cp); 558 else { 559 if (numeric_addr) 560 printf("%-*s ", width, cp); 561 else 562 printf("%-*.*s ", width, width, cp); 563 } 564} 565 566static void 567p_flags(int f, char *format) 568{ 569 char name[33], *flags; 570 register struct bits *p = bits; 571 572 for (flags = name; p->b_mask; p++) 573 if (p->b_mask & f) 574 *flags++ = p->b_val; 575 *flags = '\0'; 576 printf(format, name); 577} 578 579static void 580p_rtentry(struct rtentry *rt) 581{ 582 static struct ifnet ifnet, *lastif; 583 struct rtentry parent; 584 static char name[16]; 585 static char prettyname[9]; 586 struct sockaddr *sa; 587 sa_u addr, mask; 588 589 /* 590 * Don't print protocol-cloned routes unless -a. 591 */ 592 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 593 kget(rt->rt_parent, parent); 594 if (parent.rt_flags & RTF_PRCLONING) 595 return; 596 } 597 598 bzero(&addr, sizeof(addr)); 599 if ((sa = kgetsa(rt_key(rt)))) 600 bcopy(sa, &addr, sa->sa_len); 601 bzero(&mask, sizeof(mask)); 602 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 603 bcopy(sa, &mask, sa->sa_len); 604 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, 605 WID_DST(addr.u_sa.sa_family)); 606 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, 607 WID_GW(addr.u_sa.sa_family)); 608 p_flags(rt->rt_flags, "%-6.6s "); 609 if (addr.u_sa.sa_family == AF_INET || lflag) { 610 printf("%6ld %8ld", rt->rt_refcnt, rt->rt_use); 611 if (lflag) { 612 if (rt->rt_rmx.rmx_mtu != 0) 613 printf("%6lu ", rt->rt_rmx.rmx_mtu); 614 else 615 printf("%6s ", ""); 616 } 617 } 618 if (rt->rt_ifp) { 619 if (rt->rt_ifp != lastif) { 620 kget(rt->rt_ifp, ifnet); 621 kread((u_long)ifnet.if_name, name, 16); 622 lastif = rt->rt_ifp; 623 snprintf(prettyname, sizeof prettyname, 624 "%s%d", name, ifnet.if_unit); 625 } 626 printf("%8.8s", prettyname); 627 if (rt->rt_rmx.rmx_expire) { 628 time_t expire_time; 629 630 if ((expire_time = 631 rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0) 632 printf(" %6d%s", (int)expire_time, 633 rt->rt_nodes[0].rn_dupedkey ? " =>" : ""); 634 else 635 goto ifandkey; 636 } else if (rt->rt_nodes[0].rn_dupedkey) { 637ifandkey:; 638 printf(" =>"); 639 } 640 641 } 642 putchar('\n'); 643} 644 645char * 646routename(u_long in) 647{ 648 register char *cp; 649 static char line[MAXHOSTNAMELEN]; 650 struct hostent *hp; 651 652 cp = 0; 653 if (!numeric_addr) { 654 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 655 AF_INET); 656 if (hp) { 657 cp = hp->h_name; 658 trimdomain(cp, strlen(cp)); 659 } 660 } 661 if (cp) { 662 strncpy(line, cp, sizeof(line) - 1); 663 line[sizeof(line) - 1] = '\0'; 664 } else { 665#define C(x) ((x) & 0xff) 666 in = ntohl(in); 667 sprintf(line, "%lu.%lu.%lu.%lu", 668 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 669 } 670 return (line); 671} 672 673static u_long 674forgemask(u_long a) 675{ 676 u_long m; 677 678 if (IN_CLASSA(a)) 679 m = IN_CLASSA_NET; 680 else if (IN_CLASSB(a)) 681 m = IN_CLASSB_NET; 682 else 683 m = IN_CLASSC_NET; 684 return (m); 685} 686 687static void 688domask(char *dst, u_long addr, u_long mask) 689{ 690 register int b, i; 691 692 if (!mask || (forgemask(addr) == mask)) { 693 *dst = '\0'; 694 return; 695 } 696 i = 0; 697 for (b = 0; b < 32; b++) 698 if (mask & (1 << b)) { 699 register int bb; 700 701 i = b; 702 for (bb = b+1; bb < 32; bb++) 703 if (!(mask & (1 << bb))) { 704 i = -1; /* noncontig */ 705 break; 706 } 707 break; 708 } 709 if (i == -1) 710 sprintf(dst, "&0x%lx", mask); 711 else 712 sprintf(dst, "/%d", 32-i); 713} 714 715/* 716 * Return the name of the network whose address is given. 717 * The address is assumed to be that of a net or subnet, not a host. 718 */ 719char * 720netname(u_long in, u_long mask) 721{ 722 char *cp = 0; 723 static char line[MAXHOSTNAMELEN]; 724 struct netent *np = 0; 725 u_long net, omask, dmask; 726 register u_long i; 727 728 i = ntohl(in); 729 dmask = forgemask(i); 730 omask = mask; 731 if (!numeric_addr && i) { 732 net = i & dmask; 733 if (!(np = getnetbyaddr(i, AF_INET)) && net != i) 734 np = getnetbyaddr(net, AF_INET); 735 if (np) { 736 cp = np->n_name; 737 trimdomain(cp, strlen(cp)); 738 } 739 } 740 if (cp) 741 strncpy(line, cp, sizeof(line) - 1); 742 else { 743 switch (dmask) { 744 case IN_CLASSA_NET: 745 if ((i & IN_CLASSA_HOST) == 0) { 746 sprintf(line, "%lu", C(i >> 24)); 747 break; 748 } 749 /* FALLTHROUGH */ 750 case IN_CLASSB_NET: 751 if ((i & IN_CLASSB_HOST) == 0) { 752 sprintf(line, "%lu.%lu", 753 C(i >> 24), C(i >> 16)); 754 break; 755 } 756 /* FALLTHROUGH */ 757 case IN_CLASSC_NET: 758 if ((i & IN_CLASSC_HOST) == 0) { 759 sprintf(line, "%lu.%lu.%lu", 760 C(i >> 24), C(i >> 16), C(i >> 8)); 761 break; 762 } 763 /* FALLTHROUGH */ 764 default: 765 sprintf(line, "%lu.%lu.%lu.%lu", 766 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 767 break; 768 } 769 } 770 domask(line+strlen(line), i, omask); 771 return (line); 772} 773 774#ifdef INET6 775char * 776netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 777{ 778 static char line[MAXHOSTNAMELEN]; 779 u_char *p = (u_char *)mask; 780 u_char *lim; 781 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 782 783 if (mask) { 784 for (masklen = 0, lim = p + 16; p < lim; p++) { 785 switch (*p) { 786 case 0xff: 787 masklen += 8; 788 break; 789 case 0xfe: 790 masklen += 7; 791 break; 792 case 0xfc: 793 masklen += 6; 794 break; 795 case 0xf8: 796 masklen += 5; 797 break; 798 case 0xf0: 799 masklen += 4; 800 break; 801 case 0xe0: 802 masklen += 3; 803 break; 804 case 0xc0: 805 masklen += 2; 806 break; 807 case 0x80: 808 masklen += 1; 809 break; 810 case 0x00: 811 break; 812 default: 813 illegal ++; 814 break; 815 } 816 } 817 if (illegal) 818 fprintf(stderr, "illegal prefixlen\n"); 819 } 820 else 821 masklen = 128; 822 823 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 824 return("default"); 825 826 if (numeric_addr) 827 flag |= NI_NUMERICHOST; 828 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 829 NULL, 0, flag); 830 831 if (numeric_addr) 832 sprintf(&line[strlen(line)], "/%d", masklen); 833 834 return line; 835} 836 837char * 838routename6(struct sockaddr_in6 *sa6) 839{ 840 static char line[MAXHOSTNAMELEN]; 841 int flag = NI_WITHSCOPEID; 842 /* use local variable for safety */ 843 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),}; 844 845 sa6_local.sin6_addr = sa6->sin6_addr; 846 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 847 848 if (numeric_addr) 849 flag |= NI_NUMERICHOST; 850 851 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 852 line, sizeof(line), NULL, 0, flag); 853 854 return line; 855} 856#endif /*INET6*/ 857 858/* 859 * Print routing statistics 860 */ 861void 862rt_stats(u_long off) 863{ 864 struct rtstat rtstat; 865 866 if (off == 0) { 867 printf("rtstat: symbol not in namelist\n"); 868 return; 869 } 870 kread(off, (char *)&rtstat, sizeof (rtstat)); 871 printf("routing:\n"); 872 printf("\t%u bad routing redirect%s\n", 873 rtstat.rts_badredirect, plural(rtstat.rts_badredirect)); 874 printf("\t%u dynamically created route%s\n", 875 rtstat.rts_dynamic, plural(rtstat.rts_dynamic)); 876 printf("\t%u new gateway%s due to redirects\n", 877 rtstat.rts_newgateway, plural(rtstat.rts_newgateway)); 878 printf("\t%u destination%s found unreachable\n", 879 rtstat.rts_unreach, plural(rtstat.rts_unreach)); 880 printf("\t%u use%s of a wildcard route\n", 881 rtstat.rts_wildcard, plural(rtstat.rts_wildcard)); 882} 883 884char * 885ipx_print(struct sockaddr *sa) 886{ 887 u_short port; 888 struct servent *sp = 0; 889 char *net = "", *host = ""; 890 register char *p; 891 register u_char *q; 892 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 893 static char mybuf[50]; 894 char cport[10], chost[15], cnet[15]; 895 896 port = ntohs(work.x_port); 897 898 if (ipx_nullnet(work) && ipx_nullhost(work)) { 899 900 if (port) { 901 if (sp) 902 sprintf(mybuf, "*.%s", sp->s_name); 903 else 904 sprintf(mybuf, "*.%x", port); 905 } else 906 sprintf(mybuf, "*.*"); 907 908 return (mybuf); 909 } 910 911 if (ipx_wildnet(work)) 912 net = "any"; 913 else if (ipx_nullnet(work)) 914 net = "*"; 915 else { 916 q = work.x_net.c_net; 917 sprintf(cnet, "%02x%02x%02x%02x", 918 q[0], q[1], q[2], q[3]); 919 for (p = cnet; *p == '0' && p < cnet + 8; p++) 920 continue; 921 net = p; 922 } 923 924 if (ipx_wildhost(work)) 925 host = "any"; 926 else if (ipx_nullhost(work)) 927 host = "*"; 928 else { 929 q = work.x_host.c_host; 930 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 931 q[0], q[1], q[2], q[3], q[4], q[5]); 932 for (p = chost; *p == '0' && p < chost + 12; p++) 933 continue; 934 host = p; 935 } 936 937 if (port) { 938 if (strcmp(host, "*") == 0) 939 host = ""; 940 if (sp) 941 snprintf(cport, sizeof(cport), 942 "%s%s", *host ? "." : "", sp->s_name); 943 else 944 snprintf(cport, sizeof(cport), 945 "%s%x", *host ? "." : "", port); 946 } else 947 *cport = 0; 948 949 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 950 return(mybuf); 951} 952 953char * 954ipx_phost(struct sockaddr *sa) 955{ 956 register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 957 struct sockaddr_ipx work; 958 static union ipx_net ipx_zeronet; 959 char *p; 960 struct ipx_addr in; 961 962 work = *sipx; 963 in = work.sipx_addr; 964 965 work.sipx_addr.x_port = 0; 966 work.sipx_addr.x_net = ipx_zeronet; 967 p = ipx_print((struct sockaddr *)&work); 968 if (strncmp("*.", p, 2) == 0) p += 2; 969 970 return(p); 971} 972 973#ifdef NS 974short ns_nullh[] = {0,0,0}; 975short ns_bh[] = {-1,-1,-1}; 976 977char * 978ns_print(struct sockaddr *sa) 979{ 980 register struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 981 struct ns_addr work; 982 union { union ns_net net_e; u_long long_e; } net; 983 u_short port; 984 static char mybuf[50], cport[10], chost[25]; 985 char *host = ""; 986 register char *p; register u_char *q; 987 988 work = sns->sns_addr; 989 port = ntohs(work.x_port); 990 work.x_port = 0; 991 net.net_e = work.x_net; 992 if (ns_nullhost(work) && net.long_e == 0) { 993 if (port ) { 994 sprintf(mybuf, "*.%xH", port); 995 upHex(mybuf); 996 } else 997 sprintf(mybuf, "*.*"); 998 return (mybuf); 999 } 1000 1001 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) { 1002 host = "any"; 1003 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 1004 host = "*"; 1005 } else { 1006 q = work.x_host.c_host; 1007 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 1008 q[0], q[1], q[2], q[3], q[4], q[5]); 1009 for (p = chost; *p == '0' && p < chost + 12; p++) 1010 continue; 1011 host = p; 1012 } 1013 if (port) 1014 sprintf(cport, ".%xH", htons(port)); 1015 else 1016 *cport = 0; 1017 1018 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport); 1019 upHex(mybuf); 1020 return(mybuf); 1021} 1022 1023char * 1024ns_phost(struct sockaddr *sa) 1025{ 1026 register struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 1027 struct sockaddr_ns work; 1028 static union ns_net ns_zeronet; 1029 char *p; 1030 1031 work = *sns; 1032 work.sns_addr.x_port = 0; 1033 work.sns_addr.x_net = ns_zeronet; 1034 1035 p = ns_print((struct sockaddr *)&work); 1036 if (strncmp("0H.", p, 3) == 0) 1037 p += 3; 1038 return(p); 1039} 1040#endif 1041 1042void 1043upHex(char *p0) 1044{ 1045 register char *p = p0; 1046 1047 for (; *p; p++) 1048 switch (*p) { 1049 1050 case 'a': 1051 case 'b': 1052 case 'c': 1053 case 'd': 1054 case 'e': 1055 case 'f': 1056 *p += ('A' - 'a'); 1057 break; 1058 } 1059} 1060