route.c revision 160789
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 160789 2006-07-28 16:16:40Z yar $"); 42 43#include <sys/param.h> 44#include <sys/protosw.h> 45#include <sys/socket.h> 46#include <sys/time.h> 47 48#include <net/ethernet.h> 49#include <net/if.h> 50#include <net/if_var.h> 51#include <net/if_dl.h> 52#include <net/if_types.h> 53#include <net/radix.h> 54#include <net/route.h> 55 56#include <netinet/in.h> 57#include <netipx/ipx.h> 58#include <netatalk/at.h> 59#include <netgraph/ng_socket.h> 60 61#include <sys/sysctl.h> 62 63#include <arpa/inet.h> 64#include <libutil.h> 65#include <netdb.h> 66#include <stdint.h> 67#include <stdio.h> 68#include <stdlib.h> 69#include <string.h> 70#include <sysexits.h> 71#include <unistd.h> 72#include <err.h> 73#include "netstat.h" 74 75#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 76 77/* 78 * Definitions for showing gateway flags. 79 */ 80struct bits { 81 u_long b_mask; 82 char b_val; 83} bits[] = { 84 { RTF_UP, 'U' }, 85 { RTF_GATEWAY, 'G' }, 86 { RTF_HOST, 'H' }, 87 { RTF_REJECT, 'R' }, 88 { RTF_DYNAMIC, 'D' }, 89 { RTF_MODIFIED, 'M' }, 90 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 91 { RTF_CLONING, 'C' }, 92 { RTF_XRESOLVE, 'X' }, 93 { RTF_LLINFO, 'L' }, 94 { RTF_STATIC, 'S' }, 95 { RTF_PROTO1, '1' }, 96 { RTF_PROTO2, '2' }, 97 { RTF_WASCLONED,'W' }, 98 { RTF_PRCLONING,'c' }, 99 { RTF_PROTO3, '3' }, 100 { RTF_BLACKHOLE,'B' }, 101 { RTF_BROADCAST,'b' }, 102 { 0 , 0 } 103}; 104 105typedef union { 106 long dummy; /* Helps align structure. */ 107 struct sockaddr u_sa; 108 u_short u_data[128]; 109} sa_u; 110 111static sa_u pt_u; 112 113int do_rtent = 0; 114struct rtentry rtentry; 115struct radix_node rnode; 116struct radix_mask rmask; 117struct radix_node_head *rt_tables[AF_MAX+1]; 118 119int NewTree = 0; 120 121struct timespec uptime; 122 123static struct sockaddr *kgetsa (struct sockaddr *); 124static void size_cols (int ef, struct radix_node *rn); 125static void size_cols_tree (struct radix_node *rn); 126static void size_cols_rtentry (struct rtentry *rt); 127static void p_tree (struct radix_node *); 128static void p_rtnode (void); 129static void ntreestuff (void); 130static void np_rtentry (struct rt_msghdr *); 131static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 132static const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, 133 int flags); 134static void p_flags (int, const char *); 135static const char *fmt_flags(int f); 136static void p_rtentry (struct rtentry *); 137static u_long forgemask (u_long); 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 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 645 break; 646 } 647 648 case AF_LINK: 649 { 650 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 651 652 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 653 sdl->sdl_slen == 0) { 654 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 655 cp = workbuf; 656 } else 657 switch (sdl->sdl_type) { 658 659 case IFT_ETHER: 660 case IFT_L2VLAN: 661 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 662 cp = ether_ntoa((struct ether_addr *) 663 (sdl->sdl_data + sdl->sdl_nlen)); 664 break; 665 } 666 /* FALLTHROUGH */ 667 default: 668 cp = link_ntoa(sdl); 669 break; 670 } 671 break; 672 } 673 674 default: 675 { 676 u_char *s = (u_char *)sa->sa_data, *slim; 677 char *cq, *cqlim; 678 679 cq = workbuf; 680 slim = sa->sa_len + (u_char *) sa; 681 cqlim = cq + sizeof(workbuf) - 6; 682 cq += sprintf(cq, "(%d)", sa->sa_family); 683 while (s < slim && cq < cqlim) { 684 cq += sprintf(cq, " %02x", *s++); 685 if (s < slim) 686 cq += sprintf(cq, "%02x", *s++); 687 } 688 cp = workbuf; 689 } 690 } 691 692 return (cp); 693} 694 695static void 696p_flags(int f, const char *format) 697{ 698 printf(format, fmt_flags(f)); 699} 700 701static const char * 702fmt_flags(int f) 703{ 704 static char name[33]; 705 char *flags; 706 struct bits *p = bits; 707 708 for (flags = name; p->b_mask; p++) 709 if (p->b_mask & f) 710 *flags++ = p->b_val; 711 *flags = '\0'; 712 return (name); 713} 714 715static void 716p_rtentry(struct rtentry *rt) 717{ 718 static struct ifnet ifnet, *lastif; 719 struct rtentry parent; 720 static char buffer[128]; 721 static char prettyname[128]; 722 struct sockaddr *sa; 723 sa_u addr, mask; 724 725 /* 726 * Don't print protocol-cloned routes unless -a. 727 */ 728 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 729 kget(rt->rt_parent, parent); 730 if (parent.rt_flags & RTF_PRCLONING) 731 return; 732 } 733 734 bzero(&addr, sizeof(addr)); 735 if ((sa = kgetsa(rt_key(rt)))) 736 bcopy(sa, &addr, sa->sa_len); 737 bzero(&mask, sizeof(mask)); 738 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 739 bcopy(sa, &mask, sa->sa_len); 740 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 741 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 742 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 743 p_flags(rt->rt_flags, buffer); 744 if (addr.u_sa.sa_family == AF_INET || Wflag) { 745 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 746 wid_use, rt->rt_use); 747 if (Wflag) { 748 if (rt->rt_rmx.rmx_mtu != 0) 749 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 750 else 751 printf("%*s ", wid_mtu, ""); 752 } 753 } 754 if (rt->rt_ifp) { 755 if (rt->rt_ifp != lastif) { 756 kget(rt->rt_ifp, ifnet); 757 lastif = rt->rt_ifp; 758 strlcpy(prettyname, ifnet.if_xname, sizeof(prettyname)); 759 } 760 printf("%*.*s", wid_if, wid_if, prettyname); 761 if (rt->rt_rmx.rmx_expire) { 762 time_t expire_time; 763 764 if ((expire_time = 765 rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0) 766 printf(" %*d", wid_expire, (int)expire_time); 767 } 768 if (rt->rt_nodes[0].rn_dupedkey) 769 printf(" =>"); 770 } 771 putchar('\n'); 772} 773 774char * 775routename(u_long in) 776{ 777 char *cp; 778 static char line[MAXHOSTNAMELEN]; 779 struct hostent *hp; 780 781 cp = 0; 782 if (!numeric_addr) { 783 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 784 AF_INET); 785 if (hp) { 786 cp = hp->h_name; 787 trimdomain(cp, strlen(cp)); 788 } 789 } 790 if (cp) { 791 strncpy(line, cp, sizeof(line) - 1); 792 line[sizeof(line) - 1] = '\0'; 793 } else { 794#define C(x) ((x) & 0xff) 795 in = ntohl(in); 796 sprintf(line, "%lu.%lu.%lu.%lu", 797 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 798 } 799 return (line); 800} 801 802static u_long 803forgemask(u_long a) 804{ 805 u_long m; 806 807 if (IN_CLASSA(a)) 808 m = IN_CLASSA_NET; 809 else if (IN_CLASSB(a)) 810 m = IN_CLASSB_NET; 811 else 812 m = IN_CLASSC_NET; 813 return (m); 814} 815 816static void 817domask(char *dst, u_long addr, u_long mask) 818{ 819 int b, i; 820 821 if (!mask || (forgemask(addr) == mask)) { 822 *dst = '\0'; 823 return; 824 } 825 i = 0; 826 for (b = 0; b < 32; b++) 827 if (mask & (1 << b)) { 828 int bb; 829 830 i = b; 831 for (bb = b+1; bb < 32; bb++) 832 if (!(mask & (1 << bb))) { 833 i = -1; /* noncontig */ 834 break; 835 } 836 break; 837 } 838 if (i == -1) 839 sprintf(dst, "&0x%lx", mask); 840 else 841 sprintf(dst, "/%d", 32-i); 842} 843 844/* 845 * Return the name of the network whose address is given. 846 * The address is assumed to be that of a net or subnet, not a host. 847 */ 848char * 849netname(u_long in, u_long mask) 850{ 851 char *cp = 0; 852 static char line[MAXHOSTNAMELEN]; 853 struct netent *np = 0; 854 u_long dmask; 855 u_long i; 856 857#define NSHIFT(m) ( \ 858 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 859 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 860 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 861 0) 862 863 i = ntohl(in); 864 dmask = forgemask(i); 865 if (!numeric_addr && i) { 866 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 867 if (np == NULL && mask == 0) 868 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 869 if (np != NULL) { 870 cp = np->n_name; 871 trimdomain(cp, strlen(cp)); 872 } 873 } 874#undef NSHIFT 875 if (cp != NULL) { 876 strncpy(line, cp, sizeof(line) - 1); 877 line[sizeof(line) - 1] = '\0'; 878 } else { 879 switch (dmask) { 880 case IN_CLASSA_NET: 881 if ((i & IN_CLASSA_HOST) == 0) { 882 sprintf(line, "%lu", C(i >> 24)); 883 break; 884 } 885 /* FALLTHROUGH */ 886 case IN_CLASSB_NET: 887 if ((i & IN_CLASSB_HOST) == 0) { 888 sprintf(line, "%lu.%lu", 889 C(i >> 24), C(i >> 16)); 890 break; 891 } 892 /* FALLTHROUGH */ 893 case IN_CLASSC_NET: 894 if ((i & IN_CLASSC_HOST) == 0) { 895 sprintf(line, "%lu.%lu.%lu", 896 C(i >> 24), C(i >> 16), C(i >> 8)); 897 break; 898 } 899 /* FALLTHROUGH */ 900 default: 901 sprintf(line, "%lu.%lu.%lu.%lu", 902 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 903 break; 904 } 905 } 906 domask(line + strlen(line), i, mask); 907 return (line); 908} 909 910#ifdef INET6 911const char * 912netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 913{ 914 static char line[MAXHOSTNAMELEN]; 915 u_char *p = (u_char *)mask; 916 u_char *lim; 917 int masklen, illegal = 0, flag = 0; 918 919 if (mask) { 920 for (masklen = 0, lim = p + 16; p < lim; p++) { 921 switch (*p) { 922 case 0xff: 923 masklen += 8; 924 break; 925 case 0xfe: 926 masklen += 7; 927 break; 928 case 0xfc: 929 masklen += 6; 930 break; 931 case 0xf8: 932 masklen += 5; 933 break; 934 case 0xf0: 935 masklen += 4; 936 break; 937 case 0xe0: 938 masklen += 3; 939 break; 940 case 0xc0: 941 masklen += 2; 942 break; 943 case 0x80: 944 masklen += 1; 945 break; 946 case 0x00: 947 break; 948 default: 949 illegal ++; 950 break; 951 } 952 } 953 if (illegal) 954 fprintf(stderr, "illegal prefixlen\n"); 955 } 956 else 957 masklen = 128; 958 959 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 960 return("default"); 961 962 if (numeric_addr) 963 flag |= NI_NUMERICHOST; 964 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 965 NULL, 0, flag); 966 967 if (numeric_addr) 968 sprintf(&line[strlen(line)], "/%d", masklen); 969 970 return line; 971} 972 973char * 974routename6(struct sockaddr_in6 *sa6) 975{ 976 static char line[MAXHOSTNAMELEN]; 977 int flag = 0; 978 /* use local variable for safety */ 979 struct sockaddr_in6 sa6_local; 980 981 sa6_local.sin6_family = AF_INET6; 982 sa6_local.sin6_len = sizeof(sa6_local); 983 sa6_local.sin6_addr = sa6->sin6_addr; 984 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 985 986 if (numeric_addr) 987 flag |= NI_NUMERICHOST; 988 989 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 990 line, sizeof(line), NULL, 0, flag); 991 992 return line; 993} 994#endif /*INET6*/ 995 996/* 997 * Print routing statistics 998 */ 999void 1000rt_stats(u_long rtsaddr, u_long rttaddr) 1001{ 1002 struct rtstat rtstat; 1003 int rttrash; 1004 1005 if (rtsaddr == 0) { 1006 printf("rtstat: symbol not in namelist\n"); 1007 return; 1008 } 1009 if (rttaddr == 0) { 1010 printf("rttrash: symbol not in namelist\n"); 1011 return; 1012 } 1013 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 1014 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 1015 printf("routing:\n"); 1016 1017#define p(f, m) if (rtstat.f || sflag <= 1) \ 1018 printf(m, rtstat.f, plural(rtstat.f)) 1019 1020 p(rts_badredirect, "\t%u bad routing redirect%s\n"); 1021 p(rts_dynamic, "\t%u dynamically created route%s\n"); 1022 p(rts_newgateway, "\t%u new gateway%s due to redirects\n"); 1023 p(rts_unreach, "\t%u destination%s found unreachable\n"); 1024 p(rts_wildcard, "\t%u use%s of a wildcard route\n"); 1025#undef p 1026 1027 if (rttrash || sflag <= 1) 1028 printf("\t%u route%s not in table but not freed\n", 1029 rttrash, plural(rttrash)); 1030} 1031 1032char * 1033ipx_print(struct sockaddr *sa) 1034{ 1035 u_short port; 1036 struct servent *sp = 0; 1037 const char *net = "", *host = ""; 1038 char *p; 1039 u_char *q; 1040 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1041 static char mybuf[50]; 1042 char cport[10], chost[15], cnet[15]; 1043 1044 port = ntohs(work.x_port); 1045 1046 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1047 1048 if (port) { 1049 if (sp) 1050 sprintf(mybuf, "*.%s", sp->s_name); 1051 else 1052 sprintf(mybuf, "*.%x", port); 1053 } else 1054 sprintf(mybuf, "*.*"); 1055 1056 return (mybuf); 1057 } 1058 1059 if (ipx_wildnet(work)) 1060 net = "any"; 1061 else if (ipx_nullnet(work)) 1062 net = "*"; 1063 else { 1064 q = work.x_net.c_net; 1065 sprintf(cnet, "%02x%02x%02x%02x", 1066 q[0], q[1], q[2], q[3]); 1067 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1068 continue; 1069 net = p; 1070 } 1071 1072 if (ipx_wildhost(work)) 1073 host = "any"; 1074 else if (ipx_nullhost(work)) 1075 host = "*"; 1076 else { 1077 q = work.x_host.c_host; 1078 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1079 q[0], q[1], q[2], q[3], q[4], q[5]); 1080 for (p = chost; *p == '0' && p < chost + 12; p++) 1081 continue; 1082 host = p; 1083 } 1084 1085 if (port) { 1086 if (strcmp(host, "*") == 0) 1087 host = ""; 1088 if (sp) 1089 snprintf(cport, sizeof(cport), 1090 "%s%s", *host ? "." : "", sp->s_name); 1091 else 1092 snprintf(cport, sizeof(cport), 1093 "%s%x", *host ? "." : "", port); 1094 } else 1095 *cport = 0; 1096 1097 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1098 return(mybuf); 1099} 1100 1101char * 1102ipx_phost(struct sockaddr *sa) 1103{ 1104 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1105 struct sockaddr_ipx work; 1106 static union ipx_net ipx_zeronet; 1107 char *p; 1108 struct ipx_addr in; 1109 1110 work = *sipx; 1111 in = work.sipx_addr; 1112 1113 work.sipx_addr.x_port = 0; 1114 work.sipx_addr.x_net = ipx_zeronet; 1115 p = ipx_print((struct sockaddr *)&work); 1116 if (strncmp("*.", p, 2) == 0) p += 2; 1117 1118 return(p); 1119} 1120 1121void 1122upHex(char *p0) 1123{ 1124 char *p = p0; 1125 1126 for (; *p; p++) 1127 switch (*p) { 1128 1129 case 'a': 1130 case 'b': 1131 case 'c': 1132 case 'd': 1133 case 'e': 1134 case 'f': 1135 *p += ('A' - 'a'); 1136 break; 1137 } 1138} 1139