route.c revision 78314
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 78314 2001-06-15 23:35:13Z 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 (struct sockaddr *); 128static void p_tree (struct radix_node *); 129static void p_rtnode (void); 130static void ntreestuff (void); 131static void np_rtentry (struct rt_msghdr *); 132static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 133static void p_flags (int, char *); 134static void p_rtentry (struct rtentry *); 135static u_long forgemask (u_long); 136static void domask (char *, u_long, u_long); 137 138#ifdef INET6 139char *routename6 (struct sockaddr_in6 *); 140char *netname6 (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 %6.6s %*.*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 %*.*s %6s\n", 260 WID_DST(af), WID_DST(af), "Destination", 261 WID_GW(af), WID_GW(af), "Gateway", 262 "Flags", "Refs", "Use", 263 WID_IF(af), WID_IF(af), "Netif", "Expire"); 264 else 265 printf("%-*.*s %-*.*s %-6.6s %8.8s %6s\n", 266 WID_DST(af), WID_DST(af), "Destination", 267 WID_GW(af), WID_GW(af), "Gateway", 268 "Flags", "Netif", "Expire"); 269} 270 271static struct sockaddr * 272kgetsa(struct sockaddr *dst) 273{ 274 275 kget(dst, pt_u.u_sa); 276 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 277 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 278 return (&pt_u.u_sa); 279} 280 281static void 282p_tree(struct radix_node *rn) 283{ 284 285again: 286 kget(rn, rnode); 287 if (rnode.rn_bit < 0) { 288 if (Aflag) 289 printf("%-8.8lx ", (u_long)rn); 290 if (rnode.rn_flags & RNF_ROOT) { 291 if (Aflag) 292 printf("(root node)%s", 293 rnode.rn_dupedkey ? " =>\n" : "\n"); 294 } else if (do_rtent) { 295 kget(rn, rtentry); 296 p_rtentry(&rtentry); 297 if (Aflag) 298 p_rtnode(); 299 } else { 300 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 301 NULL, 0, 44); 302 putchar('\n'); 303 } 304 if ((rn = rnode.rn_dupedkey)) 305 goto again; 306 } else { 307 if (Aflag && do_rtent) { 308 printf("%-8.8lx ", (u_long)rn); 309 p_rtnode(); 310 } 311 rn = rnode.rn_right; 312 p_tree(rnode.rn_left); 313 p_tree(rn); 314 } 315} 316 317char nbuf[20]; 318 319static void 320p_rtnode(void) 321{ 322 struct radix_mask *rm = rnode.rn_mklist; 323 324 if (rnode.rn_bit < 0) { 325 if (rnode.rn_mask) { 326 printf("\t mask "); 327 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 328 NULL, 0, -1); 329 } else if (rm == 0) 330 return; 331 } else { 332 sprintf(nbuf, "(%d)", rnode.rn_bit); 333 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 334 } 335 while (rm) { 336 kget(rm, rmask); 337 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 338 printf(" mk = %8.8lx {(%d),%s", 339 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 340 if (rmask.rm_flags & RNF_NORMAL) { 341 struct radix_node rnode_aux; 342 printf(" <normal>, "); 343 kget(rmask.rm_leaf, rnode_aux); 344 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 345 NULL, 0, -1); 346 } else 347 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 348 NULL, 0, -1); 349 putchar('}'); 350 if ((rm = rmask.rm_mklist)) 351 printf(" ->"); 352 } 353 putchar('\n'); 354} 355 356static void 357ntreestuff(void) 358{ 359 size_t needed; 360 int mib[6]; 361 char *buf, *next, *lim; 362 register struct rt_msghdr *rtm; 363 364 mib[0] = CTL_NET; 365 mib[1] = PF_ROUTE; 366 mib[2] = 0; 367 mib[3] = 0; 368 mib[4] = NET_RT_DUMP; 369 mib[5] = 0; 370 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 371 err(1, "sysctl: net.route.0.0.dump estimate"); 372 } 373 374 if ((buf = malloc(needed)) == 0) { 375 err(2, "malloc(%lu)", (unsigned long)needed); 376 } 377 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 378 err(1, "sysctl: net.route.0.0.dump"); 379 } 380 lim = buf + needed; 381 for (next = buf; next < lim; next += rtm->rtm_msglen) { 382 rtm = (struct rt_msghdr *)next; 383 np_rtentry(rtm); 384 } 385} 386 387static void 388np_rtentry(struct rt_msghdr *rtm) 389{ 390 register struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 391#ifdef notdef 392 static int masks_done, banner_printed; 393#endif 394 static int old_af; 395 int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 396 397#ifdef notdef 398 /* for the moment, netmasks are skipped over */ 399 if (!banner_printed) { 400 printf("Netmasks:\n"); 401 banner_printed = 1; 402 } 403 if (masks_done == 0) { 404 if (rtm->rtm_addrs != RTA_DST ) { 405 masks_done = 1; 406 af = sa->sa_family; 407 } 408 } else 409#endif 410 af = sa->sa_family; 411 if (af != old_af) { 412 pr_family(af); 413 old_af = af; 414 } 415 if (rtm->rtm_addrs == RTA_DST) 416 p_sockaddr(sa, NULL, 0, 36); 417 else { 418 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 419 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 420 p_sockaddr(sa, NULL, 0, 18); 421 } 422 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 423 putchar('\n'); 424} 425 426static void 427p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 428{ 429 char workbuf[128], *cplim; 430 register char *cp = workbuf; 431 432 switch(sa->sa_family) { 433 case AF_INET: 434 { 435 register struct sockaddr_in *sin = (struct sockaddr_in *)sa; 436 437 if ((sin->sin_addr.s_addr == INADDR_ANY) && 438 mask && 439 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 440 ==0L) 441 cp = "default" ; 442 else if (flags & RTF_HOST) 443 cp = routename(sin->sin_addr.s_addr); 444 else if (mask) 445 cp = netname(sin->sin_addr.s_addr, 446 ntohl(((struct sockaddr_in *)mask) 447 ->sin_addr.s_addr)); 448 else 449 cp = netname(sin->sin_addr.s_addr, 0L); 450 break; 451 } 452 453#ifdef INET6 454 case AF_INET6: 455 { 456 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 457 struct in6_addr *in6 = &sa6->sin6_addr; 458 459 /* 460 * XXX: This is a special workaround for KAME kernels. 461 * sin6_scope_id field of SA should be set in the future. 462 */ 463 if (IN6_IS_ADDR_LINKLOCAL(in6) || 464 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 465 /* XXX: override is ok? */ 466 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 467 *(u_short *)&in6->s6_addr[2] = 0; 468 } 469 470 if (flags & RTF_HOST) 471 cp = routename6(sa6); 472 else if (mask) 473 cp = netname6(sa6, 474 &((struct sockaddr_in6 *)mask)->sin6_addr); 475 else { 476 cp = netname6(sa6, NULL); 477 } 478 break; 479 } 480#endif /*INET6*/ 481 482 case AF_IPX: 483 { 484 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 485 if (ipx_nullnet(satoipx_addr(work))) 486 cp = "default"; 487 else 488 cp = ipx_print(sa); 489 break; 490 } 491 case AF_APPLETALK: 492 { 493 if (!(flags & RTF_HOST) && mask) 494 cp = atalk_print2(sa,mask,9); 495 else 496 cp = atalk_print(sa,11); 497 break; 498 } 499 case AF_NETGRAPH: 500 { 501 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 502 break; 503 } 504#ifdef NS 505 case AF_NS: 506 cp = ns_print(sa); 507 break; 508#endif 509 510 case AF_LINK: 511 { 512 register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 513 514 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 515 sdl->sdl_slen == 0) 516 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 517 else 518 switch (sdl->sdl_type) { 519 520 case IFT_ETHER: 521 { 522 register int i; 523 register u_char *lla = (u_char *)sdl->sdl_data + 524 sdl->sdl_nlen; 525 526 cplim = ""; 527 for (i = 0; i < sdl->sdl_alen; i++, lla++) { 528 cp += sprintf(cp, "%s%x", cplim, *lla); 529 cplim = ":"; 530 } 531 cp = workbuf; 532 break; 533 } 534 535 default: 536 cp = link_ntoa(sdl); 537 break; 538 } 539 break; 540 } 541 542 default: 543 { 544 register u_char *s = (u_char *)sa->sa_data, *slim; 545 546 slim = sa->sa_len + (u_char *) sa; 547 cplim = cp + sizeof(workbuf) - 6; 548 cp += sprintf(cp, "(%d)", sa->sa_family); 549 while (s < slim && cp < cplim) { 550 cp += sprintf(cp, " %02x", *s++); 551 if (s < slim) 552 cp += sprintf(cp, "%02x", *s++); 553 } 554 cp = workbuf; 555 } 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 567static void 568p_flags(int f, 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(struct rtentry *rt) 582{ 583 static struct ifnet ifnet, *lastif; 584 struct rtentry parent; 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_flags & RTF_WASCLONED && !aflag) { 594 kget(rt->rt_parent, parent); 595 if (parent.rt_flags & RTF_PRCLONING) 596 return; 597 } 598 599 bzero(&addr, sizeof(addr)); 600 if ((sa = kgetsa(rt_key(rt)))) 601 bcopy(sa, &addr, sa->sa_len); 602 bzero(&mask, sizeof(mask)); 603 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 604 bcopy(sa, &mask, sa->sa_len); 605 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, 606 WID_DST(addr.u_sa.sa_family)); 607 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, 608 WID_GW(addr.u_sa.sa_family)); 609 p_flags(rt->rt_flags, "%-6.6s "); 610 if (addr.u_sa.sa_family == AF_INET || lflag) { 611 printf("%6ld %8ld ", rt->rt_refcnt, rt->rt_use); 612 if (lflag) { 613 if (rt->rt_rmx.rmx_mtu != 0) 614 printf("%6lu ", rt->rt_rmx.rmx_mtu); 615 else 616 printf("%6s ", ""); 617 } 618 } 619 if (rt->rt_ifp) { 620 if (rt->rt_ifp != lastif) { 621 kget(rt->rt_ifp, ifnet); 622 kread((u_long)ifnet.if_name, name, 16); 623 lastif = rt->rt_ifp; 624 snprintf(prettyname, sizeof prettyname, 625 "%s%d", name, ifnet.if_unit); 626 } 627 printf("%*.*s", WID_IF(addr.u_sa.sa_family), 628 WID_IF(addr.u_sa.sa_family), prettyname); 629 if (rt->rt_rmx.rmx_expire) { 630 time_t expire_time; 631 632 if ((expire_time = 633 rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0) 634 printf(" %6d%s", (int)expire_time, 635 rt->rt_nodes[0].rn_dupedkey ? " =>" : ""); 636 else 637 goto ifandkey; 638 } else if (rt->rt_nodes[0].rn_dupedkey) { 639ifandkey:; 640 printf(" =>"); 641 } 642 643 } 644 putchar('\n'); 645} 646 647char * 648routename(u_long in) 649{ 650 register char *cp; 651 static char line[MAXHOSTNAMELEN]; 652 struct hostent *hp; 653 654 cp = 0; 655 if (!numeric_addr) { 656 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 657 AF_INET); 658 if (hp) { 659 cp = hp->h_name; 660 trimdomain(cp, strlen(cp)); 661 } 662 } 663 if (cp) { 664 strncpy(line, cp, sizeof(line) - 1); 665 line[sizeof(line) - 1] = '\0'; 666 } else { 667#define C(x) ((x) & 0xff) 668 in = ntohl(in); 669 sprintf(line, "%lu.%lu.%lu.%lu", 670 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 671 } 672 return (line); 673} 674 675static u_long 676forgemask(u_long a) 677{ 678 u_long m; 679 680 if (IN_CLASSA(a)) 681 m = IN_CLASSA_NET; 682 else if (IN_CLASSB(a)) 683 m = IN_CLASSB_NET; 684 else 685 m = IN_CLASSC_NET; 686 return (m); 687} 688 689static void 690domask(char *dst, u_long addr, u_long mask) 691{ 692 register int b, i; 693 694 if (!mask || (forgemask(addr) == mask)) { 695 *dst = '\0'; 696 return; 697 } 698 i = 0; 699 for (b = 0; b < 32; b++) 700 if (mask & (1 << b)) { 701 register int bb; 702 703 i = b; 704 for (bb = b+1; bb < 32; bb++) 705 if (!(mask & (1 << bb))) { 706 i = -1; /* noncontig */ 707 break; 708 } 709 break; 710 } 711 if (i == -1) 712 sprintf(dst, "&0x%lx", mask); 713 else 714 sprintf(dst, "/%d", 32-i); 715} 716 717/* 718 * Return the name of the network whose address is given. 719 * The address is assumed to be that of a net or subnet, not a host. 720 */ 721char * 722netname(u_long in, u_long mask) 723{ 724 char *cp = 0; 725 static char line[MAXHOSTNAMELEN]; 726 struct netent *np = 0; 727 u_long net, omask, dmask; 728 register u_long i; 729 730 i = ntohl(in); 731 dmask = forgemask(i); 732 omask = mask; 733 if (!numeric_addr && i) { 734 net = i & dmask; 735 if (!(np = getnetbyaddr(i, AF_INET)) && net != i) 736 np = getnetbyaddr(net, AF_INET); 737 if (np) { 738 cp = np->n_name; 739 trimdomain(cp, strlen(cp)); 740 } 741 } 742 if (cp) 743 strncpy(line, cp, sizeof(line) - 1); 744 else { 745 switch (dmask) { 746 case IN_CLASSA_NET: 747 if ((i & IN_CLASSA_HOST) == 0) { 748 sprintf(line, "%lu", C(i >> 24)); 749 break; 750 } 751 /* FALLTHROUGH */ 752 case IN_CLASSB_NET: 753 if ((i & IN_CLASSB_HOST) == 0) { 754 sprintf(line, "%lu.%lu", 755 C(i >> 24), C(i >> 16)); 756 break; 757 } 758 /* FALLTHROUGH */ 759 case IN_CLASSC_NET: 760 if ((i & IN_CLASSC_HOST) == 0) { 761 sprintf(line, "%lu.%lu.%lu", 762 C(i >> 24), C(i >> 16), C(i >> 8)); 763 break; 764 } 765 /* FALLTHROUGH */ 766 default: 767 sprintf(line, "%lu.%lu.%lu.%lu", 768 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 769 break; 770 } 771 } 772 domask(line+strlen(line), i, omask); 773 return (line); 774} 775 776#ifdef INET6 777char * 778netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 779{ 780 static char line[MAXHOSTNAMELEN]; 781 u_char *p = (u_char *)mask; 782 u_char *lim; 783 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 784 785 if (mask) { 786 for (masklen = 0, lim = p + 16; p < lim; p++) { 787 switch (*p) { 788 case 0xff: 789 masklen += 8; 790 break; 791 case 0xfe: 792 masklen += 7; 793 break; 794 case 0xfc: 795 masklen += 6; 796 break; 797 case 0xf8: 798 masklen += 5; 799 break; 800 case 0xf0: 801 masklen += 4; 802 break; 803 case 0xe0: 804 masklen += 3; 805 break; 806 case 0xc0: 807 masklen += 2; 808 break; 809 case 0x80: 810 masklen += 1; 811 break; 812 case 0x00: 813 break; 814 default: 815 illegal ++; 816 break; 817 } 818 } 819 if (illegal) 820 fprintf(stderr, "illegal prefixlen\n"); 821 } 822 else 823 masklen = 128; 824 825 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 826 return("default"); 827 828 if (numeric_addr) 829 flag |= NI_NUMERICHOST; 830 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 831 NULL, 0, flag); 832 833 if (numeric_addr) 834 sprintf(&line[strlen(line)], "/%d", masklen); 835 836 return line; 837} 838 839char * 840routename6(struct sockaddr_in6 *sa6) 841{ 842 static char line[MAXHOSTNAMELEN]; 843 int flag = NI_WITHSCOPEID; 844 /* use local variable for safety */ 845 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),}; 846 847 sa6_local.sin6_addr = sa6->sin6_addr; 848 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 849 850 if (numeric_addr) 851 flag |= NI_NUMERICHOST; 852 853 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 854 line, sizeof(line), NULL, 0, flag); 855 856 return line; 857} 858#endif /*INET6*/ 859 860/* 861 * Print routing statistics 862 */ 863void 864rt_stats(u_long off) 865{ 866 struct rtstat rtstat; 867 868 if (off == 0) { 869 printf("rtstat: symbol not in namelist\n"); 870 return; 871 } 872 kread(off, (char *)&rtstat, sizeof (rtstat)); 873 printf("routing:\n"); 874 printf("\t%u bad routing redirect%s\n", 875 rtstat.rts_badredirect, plural(rtstat.rts_badredirect)); 876 printf("\t%u dynamically created route%s\n", 877 rtstat.rts_dynamic, plural(rtstat.rts_dynamic)); 878 printf("\t%u new gateway%s due to redirects\n", 879 rtstat.rts_newgateway, plural(rtstat.rts_newgateway)); 880 printf("\t%u destination%s found unreachable\n", 881 rtstat.rts_unreach, plural(rtstat.rts_unreach)); 882 printf("\t%u use%s of a wildcard route\n", 883 rtstat.rts_wildcard, plural(rtstat.rts_wildcard)); 884} 885 886char * 887ipx_print(struct sockaddr *sa) 888{ 889 u_short port; 890 struct servent *sp = 0; 891 char *net = "", *host = ""; 892 register char *p; 893 register u_char *q; 894 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 895 static char mybuf[50]; 896 char cport[10], chost[15], cnet[15]; 897 898 port = ntohs(work.x_port); 899 900 if (ipx_nullnet(work) && ipx_nullhost(work)) { 901 902 if (port) { 903 if (sp) 904 sprintf(mybuf, "*.%s", sp->s_name); 905 else 906 sprintf(mybuf, "*.%x", port); 907 } else 908 sprintf(mybuf, "*.*"); 909 910 return (mybuf); 911 } 912 913 if (ipx_wildnet(work)) 914 net = "any"; 915 else if (ipx_nullnet(work)) 916 net = "*"; 917 else { 918 q = work.x_net.c_net; 919 sprintf(cnet, "%02x%02x%02x%02x", 920 q[0], q[1], q[2], q[3]); 921 for (p = cnet; *p == '0' && p < cnet + 8; p++) 922 continue; 923 net = p; 924 } 925 926 if (ipx_wildhost(work)) 927 host = "any"; 928 else if (ipx_nullhost(work)) 929 host = "*"; 930 else { 931 q = work.x_host.c_host; 932 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 933 q[0], q[1], q[2], q[3], q[4], q[5]); 934 for (p = chost; *p == '0' && p < chost + 12; p++) 935 continue; 936 host = p; 937 } 938 939 if (port) { 940 if (strcmp(host, "*") == 0) 941 host = ""; 942 if (sp) 943 snprintf(cport, sizeof(cport), 944 "%s%s", *host ? "." : "", sp->s_name); 945 else 946 snprintf(cport, sizeof(cport), 947 "%s%x", *host ? "." : "", port); 948 } else 949 *cport = 0; 950 951 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 952 return(mybuf); 953} 954 955char * 956ipx_phost(struct sockaddr *sa) 957{ 958 register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 959 struct sockaddr_ipx work; 960 static union ipx_net ipx_zeronet; 961 char *p; 962 struct ipx_addr in; 963 964 work = *sipx; 965 in = work.sipx_addr; 966 967 work.sipx_addr.x_port = 0; 968 work.sipx_addr.x_net = ipx_zeronet; 969 p = ipx_print((struct sockaddr *)&work); 970 if (strncmp("*.", p, 2) == 0) p += 2; 971 972 return(p); 973} 974 975#ifdef NS 976short ns_nullh[] = {0,0,0}; 977short ns_bh[] = {-1,-1,-1}; 978 979char * 980ns_print(struct sockaddr *sa) 981{ 982 register struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 983 struct ns_addr work; 984 union { union ns_net net_e; u_long long_e; } net; 985 u_short port; 986 static char mybuf[50], cport[10], chost[25]; 987 char *host = ""; 988 register char *p; register u_char *q; 989 990 work = sns->sns_addr; 991 port = ntohs(work.x_port); 992 work.x_port = 0; 993 net.net_e = work.x_net; 994 if (ns_nullhost(work) && net.long_e == 0) { 995 if (port ) { 996 sprintf(mybuf, "*.%xH", port); 997 upHex(mybuf); 998 } else 999 sprintf(mybuf, "*.*"); 1000 return (mybuf); 1001 } 1002 1003 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) { 1004 host = "any"; 1005 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 1006 host = "*"; 1007 } else { 1008 q = work.x_host.c_host; 1009 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 1010 q[0], q[1], q[2], q[3], q[4], q[5]); 1011 for (p = chost; *p == '0' && p < chost + 12; p++) 1012 continue; 1013 host = p; 1014 } 1015 if (port) 1016 sprintf(cport, ".%xH", htons(port)); 1017 else 1018 *cport = 0; 1019 1020 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport); 1021 upHex(mybuf); 1022 return(mybuf); 1023} 1024 1025char * 1026ns_phost(struct sockaddr *sa) 1027{ 1028 register struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 1029 struct sockaddr_ns work; 1030 static union ns_net ns_zeronet; 1031 char *p; 1032 1033 work = *sns; 1034 work.sns_addr.x_port = 0; 1035 work.sns_addr.x_net = ns_zeronet; 1036 1037 p = ns_print((struct sockaddr *)&work); 1038 if (strncmp("0H.", p, 3) == 0) 1039 p += 3; 1040 return(p); 1041} 1042#endif 1043 1044void 1045upHex(char *p0) 1046{ 1047 register char *p = p0; 1048 1049 for (; *p; p++) 1050 switch (*p) { 1051 1052 case 'a': 1053 case 'b': 1054 case 'c': 1055 case 'd': 1056 case 'e': 1057 case 'f': 1058 *p += ('A' - 'a'); 1059 break; 1060 } 1061} 1062