route.c revision 111923
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 111923 2003-03-05 19:20:29Z peter $"; 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/ethernet.h> 48#include <net/if.h> 49#include <net/if_var.h> 50#include <net/if_dl.h> 51#include <net/if_types.h> 52#include <net/route.h> 53 54#include <netinet/in.h> 55#include <netipx/ipx.h> 56#include <netatalk/at.h> 57#include <netgraph/ng_socket.h> 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 */ 83struct 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 , 0 } 106}; 107 108typedef union { 109 long dummy; /* Helps align structure. */ 110 struct sockaddr u_sa; 111 u_short u_data[128]; 112} sa_u; 113 114static sa_u pt_u; 115 116int do_rtent = 0; 117struct rtentry rtentry; 118struct radix_node rnode; 119struct radix_mask rmask; 120struct radix_node_head *rt_tables[AF_MAX+1]; 121 122int NewTree = 0; 123 124static struct sockaddr *kgetsa (struct sockaddr *); 125static void size_cols (int ef, struct radix_node *rn); 126static void size_cols_tree (struct radix_node *rn); 127static void size_cols_rtentry (struct rtentry *rt); 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 const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, 134 int flags); 135static void p_flags (int, const char *); 136static const char *fmt_flags(int f); 137static void p_rtentry (struct rtentry *); 138static u_long forgemask (u_long); 139static void domask (char *, u_long, u_long); 140 141/* 142 * Print routing tables. 143 */ 144void 145routepr(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 */ 184void 185pr_family(int af1) 186{ 187 const char *afname; 188 189 switch (af1) { 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 case AF_ISO: 202 afname = "ISO"; 203 break; 204 case AF_APPLETALK: 205 afname = "AppleTalk"; 206 break; 207 case AF_CCITT: 208 afname = "X.25"; 209 break; 210 case AF_NETGRAPH: 211 afname = "Netgraph"; 212 break; 213 default: 214 afname = NULL; 215 break; 216 } 217 if (afname) 218 printf("\n%s:\n", afname); 219 else 220 printf("\nProtocol Family %d:\n", af1); 221} 222 223/* column widths; each followed by one space */ 224#ifndef INET6 225#define WID_DST_DEFAULT(af) 18 /* width of destination column */ 226#define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 227#define WID_IF_DEFAULT(af) 6 /* width of netif column */ 228#else 229#define WID_DST_DEFAULT(af) \ 230 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 231#define WID_GW_DEFAULT(af) \ 232 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 233#define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : 6) 234#endif /*INET6*/ 235 236static int wid_dst; 237static int wid_gw; 238static int wid_flags; 239static int wid_refs; 240static int wid_use; 241static int wid_mtu; 242static int wid_if; 243static int wid_expire; 244 245static void 246size_cols(int ef, struct radix_node *rn) 247{ 248 wid_dst = WID_DST_DEFAULT(ef); 249 wid_gw = WID_GW_DEFAULT(ef); 250 wid_flags = 6; 251 wid_refs = 6; 252 wid_use = 8; 253 wid_mtu = 6; 254 wid_if = WID_IF_DEFAULT(ef); 255 wid_expire = 6; 256 257 if (Wflag) 258 size_cols_tree(rn); 259} 260 261static void 262size_cols_tree(struct radix_node *rn) 263{ 264again: 265 kget(rn, rnode); 266 if (rnode.rn_bit < 0) { 267 if ((rnode.rn_flags & RNF_ROOT) == 0) { 268 kget(rn, rtentry); 269 size_cols_rtentry(&rtentry); 270 } 271 if ((rn = rnode.rn_dupedkey)) 272 goto again; 273 } else { 274 rn = rnode.rn_right; 275 size_cols_tree(rnode.rn_left); 276 size_cols_tree(rn); 277 } 278} 279 280static void 281size_cols_rtentry(struct rtentry *rt) 282{ 283 static struct ifnet ifnet, *lastif; 284 struct rtentry parent; 285 static char buffer[100]; 286 const char *bp; 287 struct sockaddr *sa; 288 sa_u addr, mask; 289 int len; 290 291 /* 292 * Don't print protocol-cloned routes unless -a. 293 */ 294 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 295 kget(rt->rt_parent, parent); 296 if (parent.rt_flags & RTF_PRCLONING) 297 return; 298 } 299 300 bzero(&addr, sizeof(addr)); 301 if ((sa = kgetsa(rt_key(rt)))) 302 bcopy(sa, &addr, sa->sa_len); 303 bzero(&mask, sizeof(mask)); 304 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 305 bcopy(sa, &mask, sa->sa_len); 306 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 307 len = strlen(bp); 308 wid_dst = MAX(len, wid_dst); 309 310 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 311 len = strlen(bp); 312 wid_gw = MAX(len, wid_gw); 313 314 bp = fmt_flags(rt->rt_flags); 315 len = strlen(bp); 316 wid_flags = MAX(len, wid_flags); 317 318 if (addr.u_sa.sa_family == AF_INET || Wflag) { 319 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); 320 wid_refs = MAX(len, wid_refs); 321 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 322 wid_use = MAX(len, wid_use); 323 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 324 len = snprintf(buffer, sizeof(buffer), 325 "%lu", rt->rt_rmx.rmx_mtu); 326 wid_mtu = MAX(len, wid_mtu); 327 } 328 } 329 if (rt->rt_ifp) { 330 if (rt->rt_ifp != lastif) { 331 len = snprintf(buffer, sizeof(buffer), "%d", 332 ifnet.if_unit); 333 kget(rt->rt_ifp, ifnet); 334 kread((u_long)ifnet.if_name, buffer, sizeof(buffer)); 335 lastif = rt->rt_ifp; 336 len += strlen(buffer); 337 wid_if = MAX(len, wid_if); 338 } 339 if (rt->rt_rmx.rmx_expire) { 340 time_t expire_time; 341 342 if ((expire_time = 343 rt->rt_rmx.rmx_expire - time(NULL)) > 0) { 344 len = snprintf(buffer, sizeof(buffer), "%d", 345 (int)expire_time); 346 wid_expire = MAX(len, wid_expire); 347 } 348 } 349 } 350} 351 352 353/* 354 * Print header for routing table columns. 355 */ 356void 357pr_rthdr(int af1) 358{ 359 360 if (Aflag) 361 printf("%-8.8s ","Address"); 362 if (af1 == AF_INET || Wflag) { 363 if (Wflag) { 364 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s %*s\n", 365 wid_dst, wid_dst, "Destination", 366 wid_gw, wid_gw, "Gateway", 367 wid_flags, wid_flags, "Flags", 368 wid_refs, wid_refs, "Refs", 369 wid_use, wid_use, "Use", 370 wid_mtu, wid_mtu, "Mtu", 371 wid_if, wid_if, "Netif", 372 wid_expire, "Expire"); 373 } else { 374 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 375 wid_dst, wid_dst, "Destination", 376 wid_gw, wid_gw, "Gateway", 377 wid_flags, wid_flags, "Flags", 378 wid_refs, wid_refs, "Refs", 379 wid_use, wid_use, "Use", 380 wid_if, wid_if, "Netif", 381 wid_expire, "Expire"); 382 } 383 } else { 384 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 385 wid_dst, wid_dst, "Destination", 386 wid_gw, wid_gw, "Gateway", 387 wid_flags, wid_flags, "Flags", 388 wid_if, wid_if, "Netif", 389 wid_expire, "Expire"); 390 } 391} 392 393static struct sockaddr * 394kgetsa(struct sockaddr *dst) 395{ 396 397 kget(dst, pt_u.u_sa); 398 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 399 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 400 return (&pt_u.u_sa); 401} 402 403static void 404p_tree(struct radix_node *rn) 405{ 406 407again: 408 kget(rn, rnode); 409 if (rnode.rn_bit < 0) { 410 if (Aflag) 411 printf("%-8.8lx ", (u_long)rn); 412 if (rnode.rn_flags & RNF_ROOT) { 413 if (Aflag) 414 printf("(root node)%s", 415 rnode.rn_dupedkey ? " =>\n" : "\n"); 416 } else if (do_rtent) { 417 kget(rn, rtentry); 418 p_rtentry(&rtentry); 419 if (Aflag) 420 p_rtnode(); 421 } else { 422 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 423 NULL, 0, 44); 424 putchar('\n'); 425 } 426 if ((rn = rnode.rn_dupedkey)) 427 goto again; 428 } else { 429 if (Aflag && do_rtent) { 430 printf("%-8.8lx ", (u_long)rn); 431 p_rtnode(); 432 } 433 rn = rnode.rn_right; 434 p_tree(rnode.rn_left); 435 p_tree(rn); 436 } 437} 438 439char nbuf[20]; 440 441static void 442p_rtnode(void) 443{ 444 struct radix_mask *rm = rnode.rn_mklist; 445 446 if (rnode.rn_bit < 0) { 447 if (rnode.rn_mask) { 448 printf("\t mask "); 449 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 450 NULL, 0, -1); 451 } else if (rm == 0) 452 return; 453 } else { 454 sprintf(nbuf, "(%d)", rnode.rn_bit); 455 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 456 } 457 while (rm) { 458 kget(rm, rmask); 459 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 460 printf(" mk = %8.8lx {(%d),%s", 461 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 462 if (rmask.rm_flags & RNF_NORMAL) { 463 struct radix_node rnode_aux; 464 printf(" <normal>, "); 465 kget(rmask.rm_leaf, rnode_aux); 466 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 467 NULL, 0, -1); 468 } else 469 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 470 NULL, 0, -1); 471 putchar('}'); 472 if ((rm = rmask.rm_mklist)) 473 printf(" ->"); 474 } 475 putchar('\n'); 476} 477 478static void 479ntreestuff(void) 480{ 481 size_t needed; 482 int mib[6]; 483 char *buf, *next, *lim; 484 struct rt_msghdr *rtm; 485 486 mib[0] = CTL_NET; 487 mib[1] = PF_ROUTE; 488 mib[2] = 0; 489 mib[3] = 0; 490 mib[4] = NET_RT_DUMP; 491 mib[5] = 0; 492 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 493 err(1, "sysctl: net.route.0.0.dump estimate"); 494 } 495 496 if ((buf = malloc(needed)) == 0) { 497 err(2, "malloc(%lu)", (unsigned long)needed); 498 } 499 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 500 err(1, "sysctl: net.route.0.0.dump"); 501 } 502 lim = buf + needed; 503 for (next = buf; next < lim; next += rtm->rtm_msglen) { 504 rtm = (struct rt_msghdr *)next; 505 np_rtentry(rtm); 506 } 507} 508 509static void 510np_rtentry(struct rt_msghdr *rtm) 511{ 512 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 513#ifdef notdef 514 static int masks_done, banner_printed; 515#endif 516 static int old_af; 517 int af1 = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 518 519#ifdef notdef 520 /* for the moment, netmasks are skipped over */ 521 if (!banner_printed) { 522 printf("Netmasks:\n"); 523 banner_printed = 1; 524 } 525 if (masks_done == 0) { 526 if (rtm->rtm_addrs != RTA_DST ) { 527 masks_done = 1; 528 af1 = sa->sa_family; 529 } 530 } else 531#endif 532 af1 = sa->sa_family; 533 if (af1 != old_af) { 534 pr_family(af1); 535 old_af = af1; 536 } 537 if (rtm->rtm_addrs == RTA_DST) 538 p_sockaddr(sa, NULL, 0, 36); 539 else { 540 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 541 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 542 p_sockaddr(sa, NULL, 0, 18); 543 } 544 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 545 putchar('\n'); 546} 547 548static void 549p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 550{ 551 const char *cp; 552 553 cp = fmt_sockaddr(sa, mask, flags); 554 555 if (width < 0 ) 556 printf("%s ", cp); 557 else { 558 if (numeric_addr) 559 printf("%-*s ", width, cp); 560 else 561 printf("%-*.*s ", width, width, cp); 562 } 563} 564 565static const char * 566fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 567{ 568 static char workbuf[128]; 569 const char *cp; 570 571 switch(sa->sa_family) { 572 case AF_INET: 573 { 574 struct sockaddr_in *sin = (struct sockaddr_in *)sa; 575 576 if ((sin->sin_addr.s_addr == INADDR_ANY) && 577 mask && 578 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 579 ==0L) 580 cp = "default" ; 581 else if (flags & RTF_HOST) 582 cp = routename(sin->sin_addr.s_addr); 583 else if (mask) 584 cp = netname(sin->sin_addr.s_addr, 585 ntohl(((struct sockaddr_in *)mask) 586 ->sin_addr.s_addr)); 587 else 588 cp = netname(sin->sin_addr.s_addr, 0L); 589 break; 590 } 591 592#ifdef INET6 593 case AF_INET6: 594 { 595 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 596 struct in6_addr *in6 = &sa6->sin6_addr; 597 598 /* 599 * XXX: This is a special workaround for KAME kernels. 600 * sin6_scope_id field of SA should be set in the future. 601 */ 602 if (IN6_IS_ADDR_LINKLOCAL(in6) || 603 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 604 /* XXX: override is ok? */ 605 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 606 *(u_short *)&in6->s6_addr[2] = 0; 607 } 608 609 if (flags & RTF_HOST) 610 cp = routename6(sa6); 611 else if (mask) 612 cp = netname6(sa6, 613 &((struct sockaddr_in6 *)mask)->sin6_addr); 614 else { 615 cp = netname6(sa6, NULL); 616 } 617 break; 618 } 619#endif /*INET6*/ 620 621 case AF_IPX: 622 { 623 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 624 if (ipx_nullnet(satoipx_addr(work))) 625 cp = "default"; 626 else 627 cp = ipx_print(sa); 628 break; 629 } 630 case AF_APPLETALK: 631 { 632 if (!(flags & RTF_HOST) && mask) 633 cp = atalk_print2(sa,mask,9); 634 else 635 cp = atalk_print(sa,11); 636 break; 637 } 638 case AF_NETGRAPH: 639 { 640 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 641 break; 642 } 643 644 case AF_LINK: 645 { 646 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 647 648 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 649 sdl->sdl_slen == 0) { 650 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 651 cp = workbuf; 652 } else 653 switch (sdl->sdl_type) { 654 655 case IFT_ETHER: 656 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 657 cp = ether_ntoa((struct ether_addr *) 658 (sdl->sdl_data + sdl->sdl_nlen)); 659 break; 660 } 661 /* FALLTHROUGH */ 662 default: 663 cp = link_ntoa(sdl); 664 break; 665 } 666 break; 667 } 668 669 default: 670 { 671 u_char *s = (u_char *)sa->sa_data, *slim; 672 char *cq, *cqlim; 673 674 cq = workbuf; 675 slim = sa->sa_len + (u_char *) sa; 676 cqlim = cq + sizeof(workbuf) - 6; 677 cq += sprintf(cq, "(%d)", sa->sa_family); 678 while (s < slim && cq < cqlim) { 679 cq += sprintf(cq, " %02x", *s++); 680 if (s < slim) 681 cq += sprintf(cq, "%02x", *s++); 682 } 683 cp = workbuf; 684 } 685 } 686 687 return (cp); 688} 689 690static void 691p_flags(int f, const char *format) 692{ 693 printf(format, fmt_flags(f)); 694} 695 696static const char * 697fmt_flags(int f) 698{ 699 static char name[33]; 700 char *flags; 701 struct bits *p = bits; 702 703 for (flags = name; p->b_mask; p++) 704 if (p->b_mask & f) 705 *flags++ = p->b_val; 706 *flags = '\0'; 707 return (name); 708} 709 710static void 711p_rtentry(struct rtentry *rt) 712{ 713 static struct ifnet ifnet, *lastif; 714 struct rtentry parent; 715 static char buffer[128]; 716 static char prettyname[128]; 717 struct sockaddr *sa; 718 sa_u addr, mask; 719 720 /* 721 * Don't print protocol-cloned routes unless -a. 722 */ 723 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 724 kget(rt->rt_parent, parent); 725 if (parent.rt_flags & RTF_PRCLONING) 726 return; 727 } 728 729 bzero(&addr, sizeof(addr)); 730 if ((sa = kgetsa(rt_key(rt)))) 731 bcopy(sa, &addr, sa->sa_len); 732 bzero(&mask, sizeof(mask)); 733 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 734 bcopy(sa, &mask, sa->sa_len); 735 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 736 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 737 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 738 p_flags(rt->rt_flags, buffer); 739 if (addr.u_sa.sa_family == AF_INET || Wflag) { 740 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 741 wid_use, rt->rt_use); 742 if (Wflag) { 743 if (rt->rt_rmx.rmx_mtu != 0) 744 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 745 else 746 printf("%*s ", wid_mtu, ""); 747 } 748 } 749 if (rt->rt_ifp) { 750 if (rt->rt_ifp != lastif) { 751 kget(rt->rt_ifp, ifnet); 752 kread((u_long)ifnet.if_name, buffer, sizeof(buffer)); 753 lastif = rt->rt_ifp; 754 snprintf(prettyname, sizeof(prettyname), 755 "%s%d", buffer, ifnet.if_unit); 756 } 757 printf("%*.*s", wid_if, wid_if, prettyname); 758 if (rt->rt_rmx.rmx_expire) { 759 time_t expire_time; 760 761 if ((expire_time = 762 rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0) 763 printf(" %*d", wid_expire, (int)expire_time); 764 } 765 if (rt->rt_nodes[0].rn_dupedkey) 766 printf(" =>"); 767 } 768 putchar('\n'); 769} 770 771char * 772routename(u_long in) 773{ 774 char *cp; 775 static char line[MAXHOSTNAMELEN]; 776 struct hostent *hp; 777 778 cp = 0; 779 if (!numeric_addr) { 780 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 781 AF_INET); 782 if (hp) { 783 cp = hp->h_name; 784 trimdomain(cp, strlen(cp)); 785 } 786 } 787 if (cp) { 788 strncpy(line, cp, sizeof(line) - 1); 789 line[sizeof(line) - 1] = '\0'; 790 } else { 791#define C(x) ((x) & 0xff) 792 in = ntohl(in); 793 sprintf(line, "%lu.%lu.%lu.%lu", 794 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 795 } 796 return (line); 797} 798 799static u_long 800forgemask(u_long a) 801{ 802 u_long m; 803 804 if (IN_CLASSA(a)) 805 m = IN_CLASSA_NET; 806 else if (IN_CLASSB(a)) 807 m = IN_CLASSB_NET; 808 else 809 m = IN_CLASSC_NET; 810 return (m); 811} 812 813static void 814domask(char *dst, u_long addr, u_long mask) 815{ 816 int b, i; 817 818 if (!mask || (forgemask(addr) == mask)) { 819 *dst = '\0'; 820 return; 821 } 822 i = 0; 823 for (b = 0; b < 32; b++) 824 if (mask & (1 << b)) { 825 int bb; 826 827 i = b; 828 for (bb = b+1; bb < 32; bb++) 829 if (!(mask & (1 << bb))) { 830 i = -1; /* noncontig */ 831 break; 832 } 833 break; 834 } 835 if (i == -1) 836 sprintf(dst, "&0x%lx", mask); 837 else 838 sprintf(dst, "/%d", 32-i); 839} 840 841/* 842 * Return the name of the network whose address is given. 843 * The address is assumed to be that of a net or subnet, not a host. 844 */ 845char * 846netname(u_long in, u_long mask) 847{ 848 char *cp = 0; 849 static char line[MAXHOSTNAMELEN]; 850 struct netent *np = 0; 851 u_long dmask; 852 u_long i; 853 854#define NSHIFT(m) ( \ 855 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 856 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 857 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 858 0) 859 860 i = ntohl(in); 861 dmask = forgemask(i); 862 if (!numeric_addr && i) { 863 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 864 if (np == NULL && mask == 0) 865 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 866 if (np != NULL) { 867 cp = np->n_name; 868 trimdomain(cp, strlen(cp)); 869 } 870 } 871#undef NSHIFT 872 if (cp != NULL) { 873 strncpy(line, cp, sizeof(line) - 1); 874 line[sizeof(line) - 1] = '\0'; 875 } else { 876 switch (dmask) { 877 case IN_CLASSA_NET: 878 if ((i & IN_CLASSA_HOST) == 0) { 879 sprintf(line, "%lu", C(i >> 24)); 880 break; 881 } 882 /* FALLTHROUGH */ 883 case IN_CLASSB_NET: 884 if ((i & IN_CLASSB_HOST) == 0) { 885 sprintf(line, "%lu.%lu", 886 C(i >> 24), C(i >> 16)); 887 break; 888 } 889 /* FALLTHROUGH */ 890 case IN_CLASSC_NET: 891 if ((i & IN_CLASSC_HOST) == 0) { 892 sprintf(line, "%lu.%lu.%lu", 893 C(i >> 24), C(i >> 16), C(i >> 8)); 894 break; 895 } 896 /* FALLTHROUGH */ 897 default: 898 sprintf(line, "%lu.%lu.%lu.%lu", 899 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 900 break; 901 } 902 } 903 domask(line + strlen(line), i, mask); 904 return (line); 905} 906 907#ifdef INET6 908const char * 909netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 910{ 911 static char line[MAXHOSTNAMELEN]; 912 u_char *p = (u_char *)mask; 913 u_char *lim; 914 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 915 916 if (mask) { 917 for (masklen = 0, lim = p + 16; p < lim; p++) { 918 switch (*p) { 919 case 0xff: 920 masklen += 8; 921 break; 922 case 0xfe: 923 masklen += 7; 924 break; 925 case 0xfc: 926 masklen += 6; 927 break; 928 case 0xf8: 929 masklen += 5; 930 break; 931 case 0xf0: 932 masklen += 4; 933 break; 934 case 0xe0: 935 masklen += 3; 936 break; 937 case 0xc0: 938 masklen += 2; 939 break; 940 case 0x80: 941 masklen += 1; 942 break; 943 case 0x00: 944 break; 945 default: 946 illegal ++; 947 break; 948 } 949 } 950 if (illegal) 951 fprintf(stderr, "illegal prefixlen\n"); 952 } 953 else 954 masklen = 128; 955 956 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 957 return("default"); 958 959 if (numeric_addr) 960 flag |= NI_NUMERICHOST; 961 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 962 NULL, 0, flag); 963 964 if (numeric_addr) 965 sprintf(&line[strlen(line)], "/%d", masklen); 966 967 return line; 968} 969 970char * 971routename6(struct sockaddr_in6 *sa6) 972{ 973 static char line[MAXHOSTNAMELEN]; 974 int flag = NI_WITHSCOPEID; 975 /* use local variable for safety */ 976 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),}; 977 978 sa6_local.sin6_addr = sa6->sin6_addr; 979 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 980 981 if (numeric_addr) 982 flag |= NI_NUMERICHOST; 983 984 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 985 line, sizeof(line), NULL, 0, flag); 986 987 return line; 988} 989#endif /*INET6*/ 990 991/* 992 * Print routing statistics 993 */ 994void 995rt_stats(u_long rtsaddr, u_long rttaddr) 996{ 997 struct rtstat rtstat; 998 int rttrash; 999 1000 if (rtsaddr == 0) { 1001 printf("rtstat: symbol not in namelist\n"); 1002 return; 1003 } 1004 if (rttaddr == 0) { 1005 printf("rttrash: symbol not in namelist\n"); 1006 return; 1007 } 1008 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 1009 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 1010 printf("routing:\n"); 1011 1012#define p(f, m) if (rtstat.f || sflag <= 1) \ 1013 printf(m, rtstat.f, plural(rtstat.f)) 1014 1015 p(rts_badredirect, "\t%u bad routing redirect%s\n"); 1016 p(rts_dynamic, "\t%u dynamically created route%s\n"); 1017 p(rts_newgateway, "\t%u new gateway%s due to redirects\n"); 1018 p(rts_unreach, "\t%u destination%s found unreachable\n"); 1019 p(rts_wildcard, "\t%u use%s of a wildcard route\n"); 1020#undef p 1021 1022 if (rttrash || sflag <= 1) 1023 printf("\t%u route%s not in table but not freed\n", 1024 rttrash, plural(rttrash)); 1025} 1026 1027char * 1028ipx_print(struct sockaddr *sa) 1029{ 1030 u_short port; 1031 struct servent *sp = 0; 1032 const char *net = "", *host = ""; 1033 char *p; 1034 u_char *q; 1035 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1036 static char mybuf[50]; 1037 char cport[10], chost[15], cnet[15]; 1038 1039 port = ntohs(work.x_port); 1040 1041 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1042 1043 if (port) { 1044 if (sp) 1045 sprintf(mybuf, "*.%s", sp->s_name); 1046 else 1047 sprintf(mybuf, "*.%x", port); 1048 } else 1049 sprintf(mybuf, "*.*"); 1050 1051 return (mybuf); 1052 } 1053 1054 if (ipx_wildnet(work)) 1055 net = "any"; 1056 else if (ipx_nullnet(work)) 1057 net = "*"; 1058 else { 1059 q = work.x_net.c_net; 1060 sprintf(cnet, "%02x%02x%02x%02x", 1061 q[0], q[1], q[2], q[3]); 1062 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1063 continue; 1064 net = p; 1065 } 1066 1067 if (ipx_wildhost(work)) 1068 host = "any"; 1069 else if (ipx_nullhost(work)) 1070 host = "*"; 1071 else { 1072 q = work.x_host.c_host; 1073 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1074 q[0], q[1], q[2], q[3], q[4], q[5]); 1075 for (p = chost; *p == '0' && p < chost + 12; p++) 1076 continue; 1077 host = p; 1078 } 1079 1080 if (port) { 1081 if (strcmp(host, "*") == 0) 1082 host = ""; 1083 if (sp) 1084 snprintf(cport, sizeof(cport), 1085 "%s%s", *host ? "." : "", sp->s_name); 1086 else 1087 snprintf(cport, sizeof(cport), 1088 "%s%x", *host ? "." : "", port); 1089 } else 1090 *cport = 0; 1091 1092 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1093 return(mybuf); 1094} 1095 1096char * 1097ipx_phost(struct sockaddr *sa) 1098{ 1099 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1100 struct sockaddr_ipx work; 1101 static union ipx_net ipx_zeronet; 1102 char *p; 1103 struct ipx_addr in; 1104 1105 work = *sipx; 1106 in = work.sipx_addr; 1107 1108 work.sipx_addr.x_port = 0; 1109 work.sipx_addr.x_net = ipx_zeronet; 1110 p = ipx_print((struct sockaddr *)&work); 1111 if (strncmp("*.", p, 2) == 0) p += 2; 1112 1113 return(p); 1114} 1115 1116void 1117upHex(char *p0) 1118{ 1119 char *p = p0; 1120 1121 for (; *p; p++) 1122 switch (*p) { 1123 1124 case 'a': 1125 case 'b': 1126 case 'c': 1127 case 'd': 1128 case 'e': 1129 case 'f': 1130 *p += ('A' - 'a'); 1131 break; 1132 } 1133} 1134