route.c revision 171465
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#if 0 35#ifndef lint 36static char sccsid[] = "From: @(#)route.c 8.6 (Berkeley) 4/28/95"; 37#endif /* not lint */ 38#endif 39 40#include <sys/cdefs.h> 41__FBSDID("$FreeBSD: head/usr.bin/netstat/route.c 171465 2007-07-16 17:15:55Z jhb $"); 42 43#include <sys/param.h> 44#include <sys/protosw.h> 45#include <sys/socket.h> 46#include <sys/socketvar.h> 47#include <sys/time.h> 48 49#include <net/ethernet.h> 50#include <net/if.h> 51#include <net/if_var.h> 52#include <net/if_dl.h> 53#include <net/if_types.h> 54#include <net/radix.h> 55#include <net/route.h> 56 57#include <netinet/in.h> 58#include <netipx/ipx.h> 59#include <netatalk/at.h> 60#include <netgraph/ng_socket.h> 61 62#include <sys/sysctl.h> 63 64#include <arpa/inet.h> 65#include <libutil.h> 66#include <netdb.h> 67#include <stdint.h> 68#include <stdio.h> 69#include <stdlib.h> 70#include <string.h> 71#include <sysexits.h> 72#include <unistd.h> 73#include <err.h> 74#include "netstat.h" 75 76#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 77 78/* 79 * Definitions for showing gateway flags. 80 */ 81struct bits { 82 u_long b_mask; 83 char b_val; 84} bits[] = { 85 { RTF_UP, 'U' }, 86 { RTF_GATEWAY, 'G' }, 87 { RTF_HOST, 'H' }, 88 { RTF_REJECT, 'R' }, 89 { RTF_DYNAMIC, 'D' }, 90 { RTF_MODIFIED, 'M' }, 91 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 92 { RTF_CLONING, 'C' }, 93 { RTF_XRESOLVE, 'X' }, 94 { RTF_LLINFO, 'L' }, 95 { RTF_STATIC, 'S' }, 96 { RTF_PROTO1, '1' }, 97 { RTF_PROTO2, '2' }, 98 { RTF_WASCLONED,'W' }, 99 { RTF_PRCLONING,'c' }, 100 { RTF_PROTO3, '3' }, 101 { RTF_BLACKHOLE,'B' }, 102 { RTF_BROADCAST,'b' }, 103 { 0 , 0 } 104}; 105 106typedef union { 107 long dummy; /* Helps align structure. */ 108 struct sockaddr u_sa; 109 u_short u_data[128]; 110} sa_u; 111 112static sa_u pt_u; 113 114int do_rtent = 0; 115struct rtentry rtentry; 116struct radix_node rnode; 117struct radix_mask rmask; 118struct radix_node_head *rt_tables[AF_MAX+1]; 119 120int NewTree = 0; 121 122struct timespec uptime; 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 void domask (char *, u_long, u_long); 139 140/* 141 * Print routing tables. 142 */ 143void 144routepr(u_long rtree) 145{ 146 struct radix_node_head *rnh, head; 147 int i; 148 149 /* 150 * Since kernel & userland use different timebase 151 * (time_uptime vs time_second) and we are reading kernel memory 152 * directly we should do rt_rmx.rmx_expire --> expire_time conversion. 153 */ 154 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 155 err(EX_OSERR, "clock_gettime() failed"); 156 157 printf("Routing tables\n"); 158 159 if (Aflag == 0 && NewTree) 160 ntreestuff(); 161 else { 162 if (rtree == 0) { 163 printf("rt_tables: symbol not in namelist\n"); 164 return; 165 } 166 167 kget(rtree, rt_tables); 168 for (i = 0; i <= AF_MAX; i++) { 169 if ((rnh = rt_tables[i]) == 0) 170 continue; 171 kget(rnh, head); 172 if (i == AF_UNSPEC) { 173 if (Aflag && af == 0) { 174 printf("Netmasks:\n"); 175 p_tree(head.rnh_treetop); 176 } 177 } else if (af == AF_UNSPEC || af == i) { 178 size_cols(i, head.rnh_treetop); 179 pr_family(i); 180 do_rtent = 1; 181 pr_rthdr(i); 182 p_tree(head.rnh_treetop); 183 } 184 } 185 } 186} 187 188/* 189 * Print address family header before a section of the routing table. 190 */ 191void 192pr_family(int af1) 193{ 194 const char *afname; 195 196 switch (af1) { 197 case AF_INET: 198 afname = "Internet"; 199 break; 200#ifdef INET6 201 case AF_INET6: 202 afname = "Internet6"; 203 break; 204#endif /*INET6*/ 205 case AF_IPX: 206 afname = "IPX"; 207 break; 208 case AF_ISO: 209 afname = "ISO"; 210 break; 211 case AF_APPLETALK: 212 afname = "AppleTalk"; 213 break; 214 case AF_CCITT: 215 afname = "X.25"; 216 break; 217 case AF_NETGRAPH: 218 afname = "Netgraph"; 219 break; 220 default: 221 afname = NULL; 222 break; 223 } 224 if (afname) 225 printf("\n%s:\n", afname); 226 else 227 printf("\nProtocol Family %d:\n", af1); 228} 229 230/* column widths; each followed by one space */ 231#ifndef INET6 232#define WID_DST_DEFAULT(af) 18 /* width of destination column */ 233#define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 234#define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 235#else 236#define WID_DST_DEFAULT(af) \ 237 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 238#define WID_GW_DEFAULT(af) \ 239 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 240#define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 : 6)) 241#endif /*INET6*/ 242 243static int wid_dst; 244static int wid_gw; 245static int wid_flags; 246static int wid_refs; 247static int wid_use; 248static int wid_mtu; 249static int wid_if; 250static int wid_expire; 251 252static void 253size_cols(int ef, struct radix_node *rn) 254{ 255 wid_dst = WID_DST_DEFAULT(ef); 256 wid_gw = WID_GW_DEFAULT(ef); 257 wid_flags = 6; 258 wid_refs = 6; 259 wid_use = 8; 260 wid_mtu = 6; 261 wid_if = WID_IF_DEFAULT(ef); 262 wid_expire = 6; 263 264 if (Wflag) 265 size_cols_tree(rn); 266} 267 268static void 269size_cols_tree(struct radix_node *rn) 270{ 271again: 272 kget(rn, rnode); 273 if (rnode.rn_bit < 0) { 274 if ((rnode.rn_flags & RNF_ROOT) == 0) { 275 kget(rn, rtentry); 276 size_cols_rtentry(&rtentry); 277 } 278 if ((rn = rnode.rn_dupedkey)) 279 goto again; 280 } else { 281 rn = rnode.rn_right; 282 size_cols_tree(rnode.rn_left); 283 size_cols_tree(rn); 284 } 285} 286 287static void 288size_cols_rtentry(struct rtentry *rt) 289{ 290 static struct ifnet ifnet, *lastif; 291 struct rtentry parent; 292 static char buffer[100]; 293 const char *bp; 294 struct sockaddr *sa; 295 sa_u addr, mask; 296 int len; 297 298 /* 299 * Don't print protocol-cloned routes unless -a. 300 */ 301 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 302 kget(rt->rt_parent, parent); 303 if (parent.rt_flags & RTF_PRCLONING) 304 return; 305 } 306 307 bzero(&addr, sizeof(addr)); 308 if ((sa = kgetsa(rt_key(rt)))) 309 bcopy(sa, &addr, sa->sa_len); 310 bzero(&mask, sizeof(mask)); 311 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 312 bcopy(sa, &mask, sa->sa_len); 313 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 314 len = strlen(bp); 315 wid_dst = MAX(len, wid_dst); 316 317 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 318 len = strlen(bp); 319 wid_gw = MAX(len, wid_gw); 320 321 bp = fmt_flags(rt->rt_flags); 322 len = strlen(bp); 323 wid_flags = MAX(len, wid_flags); 324 325 if (addr.u_sa.sa_family == AF_INET || Wflag) { 326 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); 327 wid_refs = MAX(len, wid_refs); 328 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 329 wid_use = MAX(len, wid_use); 330 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 331 len = snprintf(buffer, sizeof(buffer), 332 "%lu", rt->rt_rmx.rmx_mtu); 333 wid_mtu = MAX(len, wid_mtu); 334 } 335 } 336 if (rt->rt_ifp) { 337 if (rt->rt_ifp != lastif) { 338 kget(rt->rt_ifp, ifnet); 339 lastif = rt->rt_ifp; 340 len = strlen(ifnet.if_xname); 341 wid_if = MAX(len, wid_if); 342 } 343 if (rt->rt_rmx.rmx_expire) { 344 time_t expire_time; 345 346 if ((expire_time = 347 rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0) { 348 len = snprintf(buffer, sizeof(buffer), "%d", 349 (int)expire_time); 350 wid_expire = MAX(len, wid_expire); 351 } 352 } 353 } 354} 355 356 357/* 358 * Print header for routing table columns. 359 */ 360void 361pr_rthdr(int af1) 362{ 363 364 if (Aflag) 365 printf("%-8.8s ","Address"); 366 if (af1 == AF_INET || Wflag) { 367 if (Wflag) { 368 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s %*s\n", 369 wid_dst, wid_dst, "Destination", 370 wid_gw, wid_gw, "Gateway", 371 wid_flags, wid_flags, "Flags", 372 wid_refs, wid_refs, "Refs", 373 wid_use, wid_use, "Use", 374 wid_mtu, wid_mtu, "Mtu", 375 wid_if, wid_if, "Netif", 376 wid_expire, "Expire"); 377 } else { 378 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 379 wid_dst, wid_dst, "Destination", 380 wid_gw, wid_gw, "Gateway", 381 wid_flags, wid_flags, "Flags", 382 wid_refs, wid_refs, "Refs", 383 wid_use, wid_use, "Use", 384 wid_if, wid_if, "Netif", 385 wid_expire, "Expire"); 386 } 387 } else { 388 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 389 wid_dst, wid_dst, "Destination", 390 wid_gw, wid_gw, "Gateway", 391 wid_flags, wid_flags, "Flags", 392 wid_if, wid_if, "Netif", 393 wid_expire, "Expire"); 394 } 395} 396 397static struct sockaddr * 398kgetsa(struct sockaddr *dst) 399{ 400 401 kget(dst, pt_u.u_sa); 402 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 403 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 404 return (&pt_u.u_sa); 405} 406 407static void 408p_tree(struct radix_node *rn) 409{ 410 411again: 412 kget(rn, rnode); 413 if (rnode.rn_bit < 0) { 414 if (Aflag) 415 printf("%-8.8lx ", (u_long)rn); 416 if (rnode.rn_flags & RNF_ROOT) { 417 if (Aflag) 418 printf("(root node)%s", 419 rnode.rn_dupedkey ? " =>\n" : "\n"); 420 } else if (do_rtent) { 421 kget(rn, rtentry); 422 p_rtentry(&rtentry); 423 if (Aflag) 424 p_rtnode(); 425 } else { 426 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 427 NULL, 0, 44); 428 putchar('\n'); 429 } 430 if ((rn = rnode.rn_dupedkey)) 431 goto again; 432 } else { 433 if (Aflag && do_rtent) { 434 printf("%-8.8lx ", (u_long)rn); 435 p_rtnode(); 436 } 437 rn = rnode.rn_right; 438 p_tree(rnode.rn_left); 439 p_tree(rn); 440 } 441} 442 443char nbuf[20]; 444 445static void 446p_rtnode(void) 447{ 448 struct radix_mask *rm = rnode.rn_mklist; 449 450 if (rnode.rn_bit < 0) { 451 if (rnode.rn_mask) { 452 printf("\t mask "); 453 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 454 NULL, 0, -1); 455 } else if (rm == 0) 456 return; 457 } else { 458 sprintf(nbuf, "(%d)", rnode.rn_bit); 459 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 460 } 461 while (rm) { 462 kget(rm, rmask); 463 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 464 printf(" mk = %8.8lx {(%d),%s", 465 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 466 if (rmask.rm_flags & RNF_NORMAL) { 467 struct radix_node rnode_aux; 468 printf(" <normal>, "); 469 kget(rmask.rm_leaf, rnode_aux); 470 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 471 NULL, 0, -1); 472 } else 473 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 474 NULL, 0, -1); 475 putchar('}'); 476 if ((rm = rmask.rm_mklist)) 477 printf(" ->"); 478 } 479 putchar('\n'); 480} 481 482static void 483ntreestuff(void) 484{ 485 size_t needed; 486 int mib[6]; 487 char *buf, *next, *lim; 488 struct rt_msghdr *rtm; 489 490 mib[0] = CTL_NET; 491 mib[1] = PF_ROUTE; 492 mib[2] = 0; 493 mib[3] = 0; 494 mib[4] = NET_RT_DUMP; 495 mib[5] = 0; 496 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 497 err(1, "sysctl: net.route.0.0.dump estimate"); 498 } 499 500 if ((buf = malloc(needed)) == 0) { 501 errx(2, "malloc(%lu)", (unsigned long)needed); 502 } 503 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 504 err(1, "sysctl: net.route.0.0.dump"); 505 } 506 lim = buf + needed; 507 for (next = buf; next < lim; next += rtm->rtm_msglen) { 508 rtm = (struct rt_msghdr *)next; 509 np_rtentry(rtm); 510 } 511} 512 513static void 514np_rtentry(struct rt_msghdr *rtm) 515{ 516 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 517#ifdef notdef 518 static int masks_done, banner_printed; 519#endif 520 static int old_af; 521 int af1 = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 522 523#ifdef notdef 524 /* for the moment, netmasks are skipped over */ 525 if (!banner_printed) { 526 printf("Netmasks:\n"); 527 banner_printed = 1; 528 } 529 if (masks_done == 0) { 530 if (rtm->rtm_addrs != RTA_DST ) { 531 masks_done = 1; 532 af1 = sa->sa_family; 533 } 534 } else 535#endif 536 af1 = sa->sa_family; 537 if (af1 != old_af) { 538 pr_family(af1); 539 old_af = af1; 540 } 541 if (rtm->rtm_addrs == RTA_DST) 542 p_sockaddr(sa, NULL, 0, 36); 543 else { 544 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 545 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa); 546 p_sockaddr(sa, NULL, 0, 18); 547 } 548 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 549 putchar('\n'); 550} 551 552static void 553p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 554{ 555 const char *cp; 556 557 cp = fmt_sockaddr(sa, mask, flags); 558 559 if (width < 0 ) 560 printf("%s ", cp); 561 else { 562 if (numeric_addr) 563 printf("%-*s ", width, cp); 564 else 565 printf("%-*.*s ", width, width, cp); 566 } 567} 568 569static const char * 570fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 571{ 572 static char workbuf[128]; 573 const char *cp; 574 575 switch(sa->sa_family) { 576 case AF_INET: 577 { 578 struct sockaddr_in *sockin = (struct sockaddr_in *)sa; 579 580 if ((sockin->sin_addr.s_addr == INADDR_ANY) && 581 mask && 582 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 583 ==0L) 584 cp = "default" ; 585 else if (flags & RTF_HOST) 586 cp = routename(sockin->sin_addr.s_addr); 587 else if (mask) 588 cp = netname(sockin->sin_addr.s_addr, 589 ntohl(((struct sockaddr_in *)mask) 590 ->sin_addr.s_addr)); 591 else 592 cp = netname(sockin->sin_addr.s_addr, 0L); 593 break; 594 } 595 596#ifdef INET6 597 case AF_INET6: 598 { 599 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 600 struct in6_addr *in6 = &sa6->sin6_addr; 601 602 /* 603 * XXX: This is a special workaround for KAME kernels. 604 * sin6_scope_id field of SA should be set in the future. 605 */ 606 if (IN6_IS_ADDR_LINKLOCAL(in6) || 607 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 608 /* XXX: override is ok? */ 609 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 610 *(u_short *)&in6->s6_addr[2] = 0; 611 } 612 613 if (flags & RTF_HOST) 614 cp = routename6(sa6); 615 else if (mask) 616 cp = netname6(sa6, 617 &((struct sockaddr_in6 *)mask)->sin6_addr); 618 else { 619 cp = netname6(sa6, NULL); 620 } 621 break; 622 } 623#endif /*INET6*/ 624 625 case AF_IPX: 626 { 627 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 628 if (ipx_nullnet(satoipx_addr(work))) 629 cp = "default"; 630 else 631 cp = ipx_print(sa); 632 break; 633 } 634 case AF_APPLETALK: 635 { 636 if (!(flags & RTF_HOST) && mask) 637 cp = atalk_print2(sa,mask,9); 638 else 639 cp = atalk_print(sa,11); 640 break; 641 } 642 case AF_NETGRAPH: 643 { 644 strlcpy(workbuf, ((struct sockaddr_ng *)sa)->sg_data, 645 sizeof(workbuf)); 646 cp = workbuf; 647 break; 648 } 649 650 case AF_LINK: 651 { 652 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 653 654 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 655 sdl->sdl_slen == 0) { 656 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 657 cp = workbuf; 658 } else 659 switch (sdl->sdl_type) { 660 661 case IFT_ETHER: 662 case IFT_L2VLAN: 663 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 664 cp = ether_ntoa((struct ether_addr *) 665 (sdl->sdl_data + sdl->sdl_nlen)); 666 break; 667 } 668 /* FALLTHROUGH */ 669 default: 670 cp = link_ntoa(sdl); 671 break; 672 } 673 break; 674 } 675 676 default: 677 { 678 u_char *s = (u_char *)sa->sa_data, *slim; 679 char *cq, *cqlim; 680 681 cq = workbuf; 682 slim = sa->sa_len + (u_char *) sa; 683 cqlim = cq + sizeof(workbuf) - 6; 684 cq += sprintf(cq, "(%d)", sa->sa_family); 685 while (s < slim && cq < cqlim) { 686 cq += sprintf(cq, " %02x", *s++); 687 if (s < slim) 688 cq += sprintf(cq, "%02x", *s++); 689 } 690 cp = workbuf; 691 } 692 } 693 694 return (cp); 695} 696 697static void 698p_flags(int f, const char *format) 699{ 700 printf(format, fmt_flags(f)); 701} 702 703static const char * 704fmt_flags(int f) 705{ 706 static char name[33]; 707 char *flags; 708 struct bits *p = bits; 709 710 for (flags = name; p->b_mask; p++) 711 if (p->b_mask & f) 712 *flags++ = p->b_val; 713 *flags = '\0'; 714 return (name); 715} 716 717static void 718p_rtentry(struct rtentry *rt) 719{ 720 static struct ifnet ifnet, *lastif; 721 struct rtentry parent; 722 static char buffer[128]; 723 static char prettyname[128]; 724 struct sockaddr *sa; 725 sa_u addr, mask; 726 727 /* 728 * Don't print protocol-cloned routes unless -a. 729 */ 730 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 731 kget(rt->rt_parent, parent); 732 if (parent.rt_flags & RTF_PRCLONING) 733 return; 734 } 735 736 bzero(&addr, sizeof(addr)); 737 if ((sa = kgetsa(rt_key(rt)))) 738 bcopy(sa, &addr, sa->sa_len); 739 bzero(&mask, sizeof(mask)); 740 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 741 bcopy(sa, &mask, sa->sa_len); 742 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 743 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 744 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 745 p_flags(rt->rt_flags, buffer); 746 if (addr.u_sa.sa_family == AF_INET || Wflag) { 747 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 748 wid_use, rt->rt_use); 749 if (Wflag) { 750 if (rt->rt_rmx.rmx_mtu != 0) 751 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 752 else 753 printf("%*s ", wid_mtu, ""); 754 } 755 } 756 if (rt->rt_ifp) { 757 if (rt->rt_ifp != lastif) { 758 kget(rt->rt_ifp, ifnet); 759 lastif = rt->rt_ifp; 760 strlcpy(prettyname, ifnet.if_xname, sizeof(prettyname)); 761 } 762 printf("%*.*s", wid_if, wid_if, prettyname); 763 if (rt->rt_rmx.rmx_expire) { 764 time_t expire_time; 765 766 if ((expire_time = 767 rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0) 768 printf(" %*d", wid_expire, (int)expire_time); 769 } 770 if (rt->rt_nodes[0].rn_dupedkey) 771 printf(" =>"); 772 } 773 putchar('\n'); 774} 775 776char * 777routename(u_long in) 778{ 779 char *cp; 780 static char line[MAXHOSTNAMELEN]; 781 struct hostent *hp; 782 783 cp = 0; 784 if (!numeric_addr) { 785 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 786 AF_INET); 787 if (hp) { 788 cp = hp->h_name; 789 trimdomain(cp, strlen(cp)); 790 } 791 } 792 if (cp) { 793 strncpy(line, cp, sizeof(line) - 1); 794 line[sizeof(line) - 1] = '\0'; 795 } else { 796#define C(x) ((x) & 0xff) 797 in = ntohl(in); 798 sprintf(line, "%lu.%lu.%lu.%lu", 799 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 800 } 801 return (line); 802} 803 804#define NSHIFT(m) ( \ 805 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 806 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 807 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 808 0) 809 810static void 811domask(char *dst, u_long addr, u_long mask) 812{ 813 int b, i; 814 815 if (mask == 0 || (!numeric_addr && NSHIFT(mask) != 0)) { 816 *dst = '\0'; 817 return; 818 } 819 i = 0; 820 for (b = 0; b < 32; b++) 821 if (mask & (1 << b)) { 822 int bb; 823 824 i = b; 825 for (bb = b+1; bb < 32; bb++) 826 if (!(mask & (1 << bb))) { 827 i = -1; /* noncontig */ 828 break; 829 } 830 break; 831 } 832 if (i == -1) 833 sprintf(dst, "&0x%lx", mask); 834 else 835 sprintf(dst, "/%d", 32-i); 836} 837 838/* 839 * Return the name of the network whose address is given. 840 * The address is assumed to be that of a net or subnet, not a host. 841 */ 842char * 843netname(u_long in, u_long mask) 844{ 845 char *cp = 0; 846 static char line[MAXHOSTNAMELEN]; 847 struct netent *np = 0; 848 u_long i; 849 850 i = ntohl(in); 851 if (!numeric_addr && i) { 852 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 853 if (np != NULL) { 854 cp = np->n_name; 855 trimdomain(cp, strlen(cp)); 856 } 857 } 858 if (cp != NULL) { 859 strncpy(line, cp, sizeof(line) - 1); 860 line[sizeof(line) - 1] = '\0'; 861 } else { 862 inet_ntop(AF_INET, (char *)&in, line, sizeof(line) - 1); 863 } 864 domask(line + strlen(line), i, mask); 865 return (line); 866} 867 868#undef NSHIFT 869 870#ifdef INET6 871const char * 872netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 873{ 874 static char line[MAXHOSTNAMELEN]; 875 u_char *p = (u_char *)mask; 876 u_char *lim; 877 int masklen, illegal = 0, flag = 0; 878 879 if (mask) { 880 for (masklen = 0, lim = p + 16; p < lim; p++) { 881 switch (*p) { 882 case 0xff: 883 masklen += 8; 884 break; 885 case 0xfe: 886 masklen += 7; 887 break; 888 case 0xfc: 889 masklen += 6; 890 break; 891 case 0xf8: 892 masklen += 5; 893 break; 894 case 0xf0: 895 masklen += 4; 896 break; 897 case 0xe0: 898 masklen += 3; 899 break; 900 case 0xc0: 901 masklen += 2; 902 break; 903 case 0x80: 904 masklen += 1; 905 break; 906 case 0x00: 907 break; 908 default: 909 illegal ++; 910 break; 911 } 912 } 913 if (illegal) 914 fprintf(stderr, "illegal prefixlen\n"); 915 } 916 else 917 masklen = 128; 918 919 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 920 return("default"); 921 922 if (numeric_addr) 923 flag |= NI_NUMERICHOST; 924 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 925 NULL, 0, flag); 926 927 if (numeric_addr) 928 sprintf(&line[strlen(line)], "/%d", masklen); 929 930 return line; 931} 932 933char * 934routename6(struct sockaddr_in6 *sa6) 935{ 936 static char line[MAXHOSTNAMELEN]; 937 int flag = 0; 938 /* use local variable for safety */ 939 struct sockaddr_in6 sa6_local; 940 941 sa6_local.sin6_family = AF_INET6; 942 sa6_local.sin6_len = sizeof(sa6_local); 943 sa6_local.sin6_addr = sa6->sin6_addr; 944 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 945 946 if (numeric_addr) 947 flag |= NI_NUMERICHOST; 948 949 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 950 line, sizeof(line), NULL, 0, flag); 951 952 return line; 953} 954#endif /*INET6*/ 955 956/* 957 * Print routing statistics 958 */ 959void 960rt_stats(u_long rtsaddr, u_long rttaddr) 961{ 962 struct rtstat rtstat; 963 int rttrash; 964 965 if (rtsaddr == 0) { 966 printf("rtstat: symbol not in namelist\n"); 967 return; 968 } 969 if (rttaddr == 0) { 970 printf("rttrash: symbol not in namelist\n"); 971 return; 972 } 973 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 974 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 975 printf("routing:\n"); 976 977#define p(f, m) if (rtstat.f || sflag <= 1) \ 978 printf(m, rtstat.f, plural(rtstat.f)) 979 980 p(rts_badredirect, "\t%u bad routing redirect%s\n"); 981 p(rts_dynamic, "\t%u dynamically created route%s\n"); 982 p(rts_newgateway, "\t%u new gateway%s due to redirects\n"); 983 p(rts_unreach, "\t%u destination%s found unreachable\n"); 984 p(rts_wildcard, "\t%u use%s of a wildcard route\n"); 985#undef p 986 987 if (rttrash || sflag <= 1) 988 printf("\t%u route%s not in table but not freed\n", 989 rttrash, plural(rttrash)); 990} 991 992char * 993ipx_print(struct sockaddr *sa) 994{ 995 u_short port; 996 struct servent *sp = 0; 997 const char *net = "", *host = ""; 998 char *p; 999 u_char *q; 1000 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1001 static char mybuf[50]; 1002 char cport[10], chost[15], cnet[15]; 1003 1004 port = ntohs(work.x_port); 1005 1006 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1007 1008 if (port) { 1009 if (sp) 1010 sprintf(mybuf, "*.%s", sp->s_name); 1011 else 1012 sprintf(mybuf, "*.%x", port); 1013 } else 1014 sprintf(mybuf, "*.*"); 1015 1016 return (mybuf); 1017 } 1018 1019 if (ipx_wildnet(work)) 1020 net = "any"; 1021 else if (ipx_nullnet(work)) 1022 net = "*"; 1023 else { 1024 q = work.x_net.c_net; 1025 sprintf(cnet, "%02x%02x%02x%02x", 1026 q[0], q[1], q[2], q[3]); 1027 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1028 continue; 1029 net = p; 1030 } 1031 1032 if (ipx_wildhost(work)) 1033 host = "any"; 1034 else if (ipx_nullhost(work)) 1035 host = "*"; 1036 else { 1037 q = work.x_host.c_host; 1038 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1039 q[0], q[1], q[2], q[3], q[4], q[5]); 1040 for (p = chost; *p == '0' && p < chost + 12; p++) 1041 continue; 1042 host = p; 1043 } 1044 1045 if (port) { 1046 if (strcmp(host, "*") == 0) 1047 host = ""; 1048 if (sp) 1049 snprintf(cport, sizeof(cport), 1050 "%s%s", *host ? "." : "", sp->s_name); 1051 else 1052 snprintf(cport, sizeof(cport), 1053 "%s%x", *host ? "." : "", port); 1054 } else 1055 *cport = 0; 1056 1057 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1058 return(mybuf); 1059} 1060 1061char * 1062ipx_phost(struct sockaddr *sa) 1063{ 1064 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1065 struct sockaddr_ipx work; 1066 static union ipx_net ipx_zeronet; 1067 char *p; 1068 struct ipx_addr in; 1069 1070 work = *sipx; 1071 in = work.sipx_addr; 1072 1073 work.sipx_addr.x_port = 0; 1074 work.sipx_addr.x_net = ipx_zeronet; 1075 p = ipx_print((struct sockaddr *)&work); 1076 if (strncmp("*.", p, 2) == 0) p += 2; 1077 1078 return(p); 1079} 1080 1081void 1082upHex(char *p0) 1083{ 1084 char *p = p0; 1085 1086 for (; *p; p++) 1087 switch (*p) { 1088 1089 case 'a': 1090 case 'b': 1091 case 'c': 1092 case 'd': 1093 case 'e': 1094 case 'f': 1095 *p += ('A' - 'a'); 1096 break; 1097 } 1098} 1099