route.c revision 160130
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 160130 2006-07-06 11:59:27Z oleg $"); 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 <stdio.h> 67#include <stdlib.h> 68#include <string.h> 69#include <sysexits.h> 70#include <unistd.h> 71#include <err.h> 72#include "netstat.h" 73 74#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 75 76/* 77 * Definitions for showing gateway flags. 78 */ 79struct bits { 80 u_long b_mask; 81 char b_val; 82} bits[] = { 83 { RTF_UP, 'U' }, 84 { RTF_GATEWAY, 'G' }, 85 { RTF_HOST, 'H' }, 86 { RTF_REJECT, 'R' }, 87 { RTF_DYNAMIC, 'D' }, 88 { RTF_MODIFIED, 'M' }, 89 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 90 { RTF_CLONING, 'C' }, 91 { RTF_XRESOLVE, 'X' }, 92 { RTF_LLINFO, 'L' }, 93 { RTF_STATIC, 'S' }, 94 { RTF_PROTO1, '1' }, 95 { RTF_PROTO2, '2' }, 96 { RTF_WASCLONED,'W' }, 97 { RTF_PRCLONING,'c' }, 98 { RTF_PROTO3, '3' }, 99 { RTF_BLACKHOLE,'B' }, 100 { RTF_BROADCAST,'b' }, 101 { 0 , 0 } 102}; 103 104typedef union { 105 long dummy; /* Helps align structure. */ 106 struct sockaddr u_sa; 107 u_short u_data[128]; 108} sa_u; 109 110static sa_u pt_u; 111 112int do_rtent = 0; 113struct rtentry rtentry; 114struct radix_node rnode; 115struct radix_mask rmask; 116struct radix_node_head *rt_tables[AF_MAX+1]; 117 118int NewTree = 0; 119 120struct timespec uptime; 121 122static struct sockaddr *kgetsa (struct sockaddr *); 123static void size_cols (int ef, struct radix_node *rn); 124static void size_cols_tree (struct radix_node *rn); 125static void size_cols_rtentry (struct rtentry *rt); 126static void p_tree (struct radix_node *); 127static void p_rtnode (void); 128static void ntreestuff (void); 129static void np_rtentry (struct rt_msghdr *); 130static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 131static const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, 132 int flags); 133static void p_flags (int, const char *); 134static const char *fmt_flags(int f); 135static void p_rtentry (struct rtentry *); 136static u_long forgemask (u_long); 137static void domask (char *, u_long, u_long); 138 139/* 140 * Print routing tables. 141 */ 142void 143routepr(u_long rtree) 144{ 145 struct radix_node_head *rnh, head; 146 int i; 147 148 /* 149 * Since kernel & userland use different timebase 150 * (time_uptime vs time_second) and we are reading kernel memory 151 * directly we should do rt_rmx.rmx_expire --> expire_time conversion. 152 */ 153 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 154 err(EX_OSERR, "clock_gettime() failed"); 155 156 printf("Routing tables\n"); 157 158 if (Aflag == 0 && NewTree) 159 ntreestuff(); 160 else { 161 if (rtree == 0) { 162 printf("rt_tables: symbol not in namelist\n"); 163 return; 164 } 165 166 kget(rtree, rt_tables); 167 for (i = 0; i <= AF_MAX; i++) { 168 if ((rnh = rt_tables[i]) == 0) 169 continue; 170 kget(rnh, head); 171 if (i == AF_UNSPEC) { 172 if (Aflag && af == 0) { 173 printf("Netmasks:\n"); 174 p_tree(head.rnh_treetop); 175 } 176 } else if (af == AF_UNSPEC || af == i) { 177 size_cols(i, head.rnh_treetop); 178 pr_family(i); 179 do_rtent = 1; 180 pr_rthdr(i); 181 p_tree(head.rnh_treetop); 182 } 183 } 184 } 185} 186 187/* 188 * Print address family header before a section of the routing table. 189 */ 190void 191pr_family(int af1) 192{ 193 const char *afname; 194 195 switch (af1) { 196 case AF_INET: 197 afname = "Internet"; 198 break; 199#ifdef INET6 200 case AF_INET6: 201 afname = "Internet6"; 202 break; 203#endif /*INET6*/ 204 case AF_IPX: 205 afname = "IPX"; 206 break; 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", af1); 227} 228 229/* column widths; each followed by one space */ 230#ifndef INET6 231#define WID_DST_DEFAULT(af) 18 /* width of destination column */ 232#define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 233#define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 234#else 235#define WID_DST_DEFAULT(af) \ 236 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 237#define WID_GW_DEFAULT(af) \ 238 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 239#define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 : 6)) 240#endif /*INET6*/ 241 242static int wid_dst; 243static int wid_gw; 244static int wid_flags; 245static int wid_refs; 246static int wid_use; 247static int wid_mtu; 248static int wid_if; 249static int wid_expire; 250 251static void 252size_cols(int ef, struct radix_node *rn) 253{ 254 wid_dst = WID_DST_DEFAULT(ef); 255 wid_gw = WID_GW_DEFAULT(ef); 256 wid_flags = 6; 257 wid_refs = 6; 258 wid_use = 8; 259 wid_mtu = 6; 260 wid_if = WID_IF_DEFAULT(ef); 261 wid_expire = 6; 262 263 if (Wflag) 264 size_cols_tree(rn); 265} 266 267static void 268size_cols_tree(struct radix_node *rn) 269{ 270again: 271 kget(rn, rnode); 272 if (rnode.rn_bit < 0) { 273 if ((rnode.rn_flags & RNF_ROOT) == 0) { 274 kget(rn, rtentry); 275 size_cols_rtentry(&rtentry); 276 } 277 if ((rn = rnode.rn_dupedkey)) 278 goto again; 279 } else { 280 rn = rnode.rn_right; 281 size_cols_tree(rnode.rn_left); 282 size_cols_tree(rn); 283 } 284} 285 286static void 287size_cols_rtentry(struct rtentry *rt) 288{ 289 static struct ifnet ifnet, *lastif; 290 struct rtentry parent; 291 static char buffer[100]; 292 const char *bp; 293 struct sockaddr *sa; 294 sa_u addr, mask; 295 int len; 296 297 /* 298 * Don't print protocol-cloned routes unless -a. 299 */ 300 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 301 kget(rt->rt_parent, parent); 302 if (parent.rt_flags & RTF_PRCLONING) 303 return; 304 } 305 306 bzero(&addr, sizeof(addr)); 307 if ((sa = kgetsa(rt_key(rt)))) 308 bcopy(sa, &addr, sa->sa_len); 309 bzero(&mask, sizeof(mask)); 310 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 311 bcopy(sa, &mask, sa->sa_len); 312 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 313 len = strlen(bp); 314 wid_dst = MAX(len, wid_dst); 315 316 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 317 len = strlen(bp); 318 wid_gw = MAX(len, wid_gw); 319 320 bp = fmt_flags(rt->rt_flags); 321 len = strlen(bp); 322 wid_flags = MAX(len, wid_flags); 323 324 if (addr.u_sa.sa_family == AF_INET || Wflag) { 325 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); 326 wid_refs = MAX(len, wid_refs); 327 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 328 wid_use = MAX(len, wid_use); 329 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 330 len = snprintf(buffer, sizeof(buffer), 331 "%lu", rt->rt_rmx.rmx_mtu); 332 wid_mtu = MAX(len, wid_mtu); 333 } 334 } 335 if (rt->rt_ifp) { 336 if (rt->rt_ifp != lastif) { 337 kget(rt->rt_ifp, ifnet); 338 lastif = rt->rt_ifp; 339 len = strlen(ifnet.if_xname); 340 wid_if = MAX(len, wid_if); 341 } 342 if (rt->rt_rmx.rmx_expire) { 343 time_t expire_time; 344 345 if ((expire_time = 346 rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0) { 347 len = snprintf(buffer, sizeof(buffer), "%d", 348 (int)expire_time); 349 wid_expire = MAX(len, wid_expire); 350 } 351 } 352 } 353} 354 355 356/* 357 * Print header for routing table columns. 358 */ 359void 360pr_rthdr(int af1) 361{ 362 363 if (Aflag) 364 printf("%-8.8s ","Address"); 365 if (af1 == AF_INET || Wflag) { 366 if (Wflag) { 367 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s %*s\n", 368 wid_dst, wid_dst, "Destination", 369 wid_gw, wid_gw, "Gateway", 370 wid_flags, wid_flags, "Flags", 371 wid_refs, wid_refs, "Refs", 372 wid_use, wid_use, "Use", 373 wid_mtu, wid_mtu, "Mtu", 374 wid_if, wid_if, "Netif", 375 wid_expire, "Expire"); 376 } else { 377 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 378 wid_dst, wid_dst, "Destination", 379 wid_gw, wid_gw, "Gateway", 380 wid_flags, wid_flags, "Flags", 381 wid_refs, wid_refs, "Refs", 382 wid_use, wid_use, "Use", 383 wid_if, wid_if, "Netif", 384 wid_expire, "Expire"); 385 } 386 } else { 387 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 388 wid_dst, wid_dst, "Destination", 389 wid_gw, wid_gw, "Gateway", 390 wid_flags, wid_flags, "Flags", 391 wid_if, wid_if, "Netif", 392 wid_expire, "Expire"); 393 } 394} 395 396static struct sockaddr * 397kgetsa(struct sockaddr *dst) 398{ 399 400 kget(dst, pt_u.u_sa); 401 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 402 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 403 return (&pt_u.u_sa); 404} 405 406static void 407p_tree(struct radix_node *rn) 408{ 409 410again: 411 kget(rn, rnode); 412 if (rnode.rn_bit < 0) { 413 if (Aflag) 414 printf("%-8.8lx ", (u_long)rn); 415 if (rnode.rn_flags & RNF_ROOT) { 416 if (Aflag) 417 printf("(root node)%s", 418 rnode.rn_dupedkey ? " =>\n" : "\n"); 419 } else if (do_rtent) { 420 kget(rn, rtentry); 421 p_rtentry(&rtentry); 422 if (Aflag) 423 p_rtnode(); 424 } else { 425 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 426 NULL, 0, 44); 427 putchar('\n'); 428 } 429 if ((rn = rnode.rn_dupedkey)) 430 goto again; 431 } else { 432 if (Aflag && do_rtent) { 433 printf("%-8.8lx ", (u_long)rn); 434 p_rtnode(); 435 } 436 rn = rnode.rn_right; 437 p_tree(rnode.rn_left); 438 p_tree(rn); 439 } 440} 441 442char nbuf[20]; 443 444static void 445p_rtnode(void) 446{ 447 struct radix_mask *rm = rnode.rn_mklist; 448 449 if (rnode.rn_bit < 0) { 450 if (rnode.rn_mask) { 451 printf("\t mask "); 452 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 453 NULL, 0, -1); 454 } else if (rm == 0) 455 return; 456 } else { 457 sprintf(nbuf, "(%d)", rnode.rn_bit); 458 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 459 } 460 while (rm) { 461 kget(rm, rmask); 462 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 463 printf(" mk = %8.8lx {(%d),%s", 464 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 465 if (rmask.rm_flags & RNF_NORMAL) { 466 struct radix_node rnode_aux; 467 printf(" <normal>, "); 468 kget(rmask.rm_leaf, rnode_aux); 469 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 470 NULL, 0, -1); 471 } else 472 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 473 NULL, 0, -1); 474 putchar('}'); 475 if ((rm = rmask.rm_mklist)) 476 printf(" ->"); 477 } 478 putchar('\n'); 479} 480 481static void 482ntreestuff(void) 483{ 484 size_t needed; 485 int mib[6]; 486 char *buf, *next, *lim; 487 struct rt_msghdr *rtm; 488 489 mib[0] = CTL_NET; 490 mib[1] = PF_ROUTE; 491 mib[2] = 0; 492 mib[3] = 0; 493 mib[4] = NET_RT_DUMP; 494 mib[5] = 0; 495 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 496 err(1, "sysctl: net.route.0.0.dump estimate"); 497 } 498 499 if ((buf = malloc(needed)) == 0) { 500 errx(2, "malloc(%lu)", (unsigned long)needed); 501 } 502 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 503 err(1, "sysctl: net.route.0.0.dump"); 504 } 505 lim = buf + needed; 506 for (next = buf; next < lim; next += rtm->rtm_msglen) { 507 rtm = (struct rt_msghdr *)next; 508 np_rtentry(rtm); 509 } 510} 511 512static void 513np_rtentry(struct rt_msghdr *rtm) 514{ 515 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 516#ifdef notdef 517 static int masks_done, banner_printed; 518#endif 519 static int old_af; 520 int af1 = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 521 522#ifdef notdef 523 /* for the moment, netmasks are skipped over */ 524 if (!banner_printed) { 525 printf("Netmasks:\n"); 526 banner_printed = 1; 527 } 528 if (masks_done == 0) { 529 if (rtm->rtm_addrs != RTA_DST ) { 530 masks_done = 1; 531 af1 = sa->sa_family; 532 } 533 } else 534#endif 535 af1 = sa->sa_family; 536 if (af1 != old_af) { 537 pr_family(af1); 538 old_af = af1; 539 } 540 if (rtm->rtm_addrs == RTA_DST) 541 p_sockaddr(sa, NULL, 0, 36); 542 else { 543 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 544 sa = (struct sockaddr *)(SA_SIZE(sa) + (char *)sa); 545 p_sockaddr(sa, NULL, 0, 18); 546 } 547 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 548 putchar('\n'); 549} 550 551static void 552p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 553{ 554 const char *cp; 555 556 cp = fmt_sockaddr(sa, mask, flags); 557 558 if (width < 0 ) 559 printf("%s ", cp); 560 else { 561 if (numeric_addr) 562 printf("%-*s ", width, cp); 563 else 564 printf("%-*.*s ", width, width, cp); 565 } 566} 567 568static const char * 569fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 570{ 571 static char workbuf[128]; 572 const char *cp; 573 574 switch(sa->sa_family) { 575 case AF_INET: 576 { 577 struct sockaddr_in *sockin = (struct sockaddr_in *)sa; 578 579 if ((sockin->sin_addr.s_addr == INADDR_ANY) && 580 mask && 581 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 582 ==0L) 583 cp = "default" ; 584 else if (flags & RTF_HOST) 585 cp = routename(sockin->sin_addr.s_addr); 586 else if (mask) 587 cp = netname(sockin->sin_addr.s_addr, 588 ntohl(((struct sockaddr_in *)mask) 589 ->sin_addr.s_addr)); 590 else 591 cp = netname(sockin->sin_addr.s_addr, 0L); 592 break; 593 } 594 595#ifdef INET6 596 case AF_INET6: 597 { 598 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 599 struct in6_addr *in6 = &sa6->sin6_addr; 600 601 /* 602 * XXX: This is a special workaround for KAME kernels. 603 * sin6_scope_id field of SA should be set in the future. 604 */ 605 if (IN6_IS_ADDR_LINKLOCAL(in6) || 606 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 607 /* XXX: override is ok? */ 608 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 609 *(u_short *)&in6->s6_addr[2] = 0; 610 } 611 612 if (flags & RTF_HOST) 613 cp = routename6(sa6); 614 else if (mask) 615 cp = netname6(sa6, 616 &((struct sockaddr_in6 *)mask)->sin6_addr); 617 else { 618 cp = netname6(sa6, NULL); 619 } 620 break; 621 } 622#endif /*INET6*/ 623 624 case AF_IPX: 625 { 626 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 627 if (ipx_nullnet(satoipx_addr(work))) 628 cp = "default"; 629 else 630 cp = ipx_print(sa); 631 break; 632 } 633 case AF_APPLETALK: 634 { 635 if (!(flags & RTF_HOST) && mask) 636 cp = atalk_print2(sa,mask,9); 637 else 638 cp = atalk_print(sa,11); 639 break; 640 } 641 case AF_NETGRAPH: 642 { 643 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 644 break; 645 } 646 647 case AF_LINK: 648 { 649 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 650 651 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 652 sdl->sdl_slen == 0) { 653 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 654 cp = workbuf; 655 } else 656 switch (sdl->sdl_type) { 657 658 case IFT_ETHER: 659 case IFT_L2VLAN: 660 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 661 cp = ether_ntoa((struct ether_addr *) 662 (sdl->sdl_data + sdl->sdl_nlen)); 663 break; 664 } 665 /* FALLTHROUGH */ 666 default: 667 cp = link_ntoa(sdl); 668 break; 669 } 670 break; 671 } 672 673 default: 674 { 675 u_char *s = (u_char *)sa->sa_data, *slim; 676 char *cq, *cqlim; 677 678 cq = workbuf; 679 slim = sa->sa_len + (u_char *) sa; 680 cqlim = cq + sizeof(workbuf) - 6; 681 cq += sprintf(cq, "(%d)", sa->sa_family); 682 while (s < slim && cq < cqlim) { 683 cq += sprintf(cq, " %02x", *s++); 684 if (s < slim) 685 cq += sprintf(cq, "%02x", *s++); 686 } 687 cp = workbuf; 688 } 689 } 690 691 return (cp); 692} 693 694static void 695p_flags(int f, const char *format) 696{ 697 printf(format, fmt_flags(f)); 698} 699 700static const char * 701fmt_flags(int f) 702{ 703 static char name[33]; 704 char *flags; 705 struct bits *p = bits; 706 707 for (flags = name; p->b_mask; p++) 708 if (p->b_mask & f) 709 *flags++ = p->b_val; 710 *flags = '\0'; 711 return (name); 712} 713 714static void 715p_rtentry(struct rtentry *rt) 716{ 717 static struct ifnet ifnet, *lastif; 718 struct rtentry parent; 719 static char buffer[128]; 720 static char prettyname[128]; 721 struct sockaddr *sa; 722 sa_u addr, mask; 723 724 /* 725 * Don't print protocol-cloned routes unless -a. 726 */ 727 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 728 kget(rt->rt_parent, parent); 729 if (parent.rt_flags & RTF_PRCLONING) 730 return; 731 } 732 733 bzero(&addr, sizeof(addr)); 734 if ((sa = kgetsa(rt_key(rt)))) 735 bcopy(sa, &addr, sa->sa_len); 736 bzero(&mask, sizeof(mask)); 737 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 738 bcopy(sa, &mask, sa->sa_len); 739 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 740 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 741 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 742 p_flags(rt->rt_flags, buffer); 743 if (addr.u_sa.sa_family == AF_INET || Wflag) { 744 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 745 wid_use, rt->rt_use); 746 if (Wflag) { 747 if (rt->rt_rmx.rmx_mtu != 0) 748 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 749 else 750 printf("%*s ", wid_mtu, ""); 751 } 752 } 753 if (rt->rt_ifp) { 754 if (rt->rt_ifp != lastif) { 755 kget(rt->rt_ifp, ifnet); 756 lastif = rt->rt_ifp; 757 strlcpy(prettyname, ifnet.if_xname, sizeof(prettyname)); 758 } 759 printf("%*.*s", wid_if, wid_if, prettyname); 760 if (rt->rt_rmx.rmx_expire) { 761 time_t expire_time; 762 763 if ((expire_time = 764 rt->rt_rmx.rmx_expire - uptime.tv_sec) > 0) 765 printf(" %*d", wid_expire, (int)expire_time); 766 } 767 if (rt->rt_nodes[0].rn_dupedkey) 768 printf(" =>"); 769 } 770 putchar('\n'); 771} 772 773char * 774routename(u_long in) 775{ 776 char *cp; 777 static char line[MAXHOSTNAMELEN]; 778 struct hostent *hp; 779 780 cp = 0; 781 if (!numeric_addr) { 782 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 783 AF_INET); 784 if (hp) { 785 cp = hp->h_name; 786 trimdomain(cp, strlen(cp)); 787 } 788 } 789 if (cp) { 790 strncpy(line, cp, sizeof(line) - 1); 791 line[sizeof(line) - 1] = '\0'; 792 } else { 793#define C(x) ((x) & 0xff) 794 in = ntohl(in); 795 sprintf(line, "%lu.%lu.%lu.%lu", 796 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 797 } 798 return (line); 799} 800 801static u_long 802forgemask(u_long a) 803{ 804 u_long m; 805 806 if (IN_CLASSA(a)) 807 m = IN_CLASSA_NET; 808 else if (IN_CLASSB(a)) 809 m = IN_CLASSB_NET; 810 else 811 m = IN_CLASSC_NET; 812 return (m); 813} 814 815static void 816domask(char *dst, u_long addr, u_long mask) 817{ 818 int b, i; 819 820 if (!mask || (forgemask(addr) == mask)) { 821 *dst = '\0'; 822 return; 823 } 824 i = 0; 825 for (b = 0; b < 32; b++) 826 if (mask & (1 << b)) { 827 int bb; 828 829 i = b; 830 for (bb = b+1; bb < 32; bb++) 831 if (!(mask & (1 << bb))) { 832 i = -1; /* noncontig */ 833 break; 834 } 835 break; 836 } 837 if (i == -1) 838 sprintf(dst, "&0x%lx", mask); 839 else 840 sprintf(dst, "/%d", 32-i); 841} 842 843/* 844 * Return the name of the network whose address is given. 845 * The address is assumed to be that of a net or subnet, not a host. 846 */ 847char * 848netname(u_long in, u_long mask) 849{ 850 char *cp = 0; 851 static char line[MAXHOSTNAMELEN]; 852 struct netent *np = 0; 853 u_long dmask; 854 u_long i; 855 856#define NSHIFT(m) ( \ 857 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 858 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 859 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 860 0) 861 862 i = ntohl(in); 863 dmask = forgemask(i); 864 if (!numeric_addr && i) { 865 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 866 if (np == NULL && mask == 0) 867 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 868 if (np != NULL) { 869 cp = np->n_name; 870 trimdomain(cp, strlen(cp)); 871 } 872 } 873#undef NSHIFT 874 if (cp != NULL) { 875 strncpy(line, cp, sizeof(line) - 1); 876 line[sizeof(line) - 1] = '\0'; 877 } else { 878 switch (dmask) { 879 case IN_CLASSA_NET: 880 if ((i & IN_CLASSA_HOST) == 0) { 881 sprintf(line, "%lu", C(i >> 24)); 882 break; 883 } 884 /* FALLTHROUGH */ 885 case IN_CLASSB_NET: 886 if ((i & IN_CLASSB_HOST) == 0) { 887 sprintf(line, "%lu.%lu", 888 C(i >> 24), C(i >> 16)); 889 break; 890 } 891 /* FALLTHROUGH */ 892 case IN_CLASSC_NET: 893 if ((i & IN_CLASSC_HOST) == 0) { 894 sprintf(line, "%lu.%lu.%lu", 895 C(i >> 24), C(i >> 16), C(i >> 8)); 896 break; 897 } 898 /* FALLTHROUGH */ 899 default: 900 sprintf(line, "%lu.%lu.%lu.%lu", 901 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 902 break; 903 } 904 } 905 domask(line + strlen(line), i, mask); 906 return (line); 907} 908 909#ifdef INET6 910const char * 911netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 912{ 913 static char line[MAXHOSTNAMELEN]; 914 u_char *p = (u_char *)mask; 915 u_char *lim; 916 int masklen, illegal = 0, flag = 0; 917 918 if (mask) { 919 for (masklen = 0, lim = p + 16; p < lim; p++) { 920 switch (*p) { 921 case 0xff: 922 masklen += 8; 923 break; 924 case 0xfe: 925 masklen += 7; 926 break; 927 case 0xfc: 928 masklen += 6; 929 break; 930 case 0xf8: 931 masklen += 5; 932 break; 933 case 0xf0: 934 masklen += 4; 935 break; 936 case 0xe0: 937 masklen += 3; 938 break; 939 case 0xc0: 940 masklen += 2; 941 break; 942 case 0x80: 943 masklen += 1; 944 break; 945 case 0x00: 946 break; 947 default: 948 illegal ++; 949 break; 950 } 951 } 952 if (illegal) 953 fprintf(stderr, "illegal prefixlen\n"); 954 } 955 else 956 masklen = 128; 957 958 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 959 return("default"); 960 961 if (numeric_addr) 962 flag |= NI_NUMERICHOST; 963 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 964 NULL, 0, flag); 965 966 if (numeric_addr) 967 sprintf(&line[strlen(line)], "/%d", masklen); 968 969 return line; 970} 971 972char * 973routename6(struct sockaddr_in6 *sa6) 974{ 975 static char line[MAXHOSTNAMELEN]; 976 int flag = 0; 977 /* use local variable for safety */ 978 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),}; 979 980 sa6_local.sin6_addr = sa6->sin6_addr; 981 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 982 983 if (numeric_addr) 984 flag |= NI_NUMERICHOST; 985 986 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 987 line, sizeof(line), NULL, 0, flag); 988 989 return line; 990} 991#endif /*INET6*/ 992 993/* 994 * Print routing statistics 995 */ 996void 997rt_stats(u_long rtsaddr, u_long rttaddr) 998{ 999 struct rtstat rtstat; 1000 int rttrash; 1001 1002 if (rtsaddr == 0) { 1003 printf("rtstat: symbol not in namelist\n"); 1004 return; 1005 } 1006 if (rttaddr == 0) { 1007 printf("rttrash: symbol not in namelist\n"); 1008 return; 1009 } 1010 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 1011 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 1012 printf("routing:\n"); 1013 1014#define p(f, m) if (rtstat.f || sflag <= 1) \ 1015 printf(m, rtstat.f, plural(rtstat.f)) 1016 1017 p(rts_badredirect, "\t%u bad routing redirect%s\n"); 1018 p(rts_dynamic, "\t%u dynamically created route%s\n"); 1019 p(rts_newgateway, "\t%u new gateway%s due to redirects\n"); 1020 p(rts_unreach, "\t%u destination%s found unreachable\n"); 1021 p(rts_wildcard, "\t%u use%s of a wildcard route\n"); 1022#undef p 1023 1024 if (rttrash || sflag <= 1) 1025 printf("\t%u route%s not in table but not freed\n", 1026 rttrash, plural(rttrash)); 1027} 1028 1029char * 1030ipx_print(struct sockaddr *sa) 1031{ 1032 u_short port; 1033 struct servent *sp = 0; 1034 const char *net = "", *host = ""; 1035 char *p; 1036 u_char *q; 1037 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1038 static char mybuf[50]; 1039 char cport[10], chost[15], cnet[15]; 1040 1041 port = ntohs(work.x_port); 1042 1043 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1044 1045 if (port) { 1046 if (sp) 1047 sprintf(mybuf, "*.%s", sp->s_name); 1048 else 1049 sprintf(mybuf, "*.%x", port); 1050 } else 1051 sprintf(mybuf, "*.*"); 1052 1053 return (mybuf); 1054 } 1055 1056 if (ipx_wildnet(work)) 1057 net = "any"; 1058 else if (ipx_nullnet(work)) 1059 net = "*"; 1060 else { 1061 q = work.x_net.c_net; 1062 sprintf(cnet, "%02x%02x%02x%02x", 1063 q[0], q[1], q[2], q[3]); 1064 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1065 continue; 1066 net = p; 1067 } 1068 1069 if (ipx_wildhost(work)) 1070 host = "any"; 1071 else if (ipx_nullhost(work)) 1072 host = "*"; 1073 else { 1074 q = work.x_host.c_host; 1075 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1076 q[0], q[1], q[2], q[3], q[4], q[5]); 1077 for (p = chost; *p == '0' && p < chost + 12; p++) 1078 continue; 1079 host = p; 1080 } 1081 1082 if (port) { 1083 if (strcmp(host, "*") == 0) 1084 host = ""; 1085 if (sp) 1086 snprintf(cport, sizeof(cport), 1087 "%s%s", *host ? "." : "", sp->s_name); 1088 else 1089 snprintf(cport, sizeof(cport), 1090 "%s%x", *host ? "." : "", port); 1091 } else 1092 *cport = 0; 1093 1094 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1095 return(mybuf); 1096} 1097 1098char * 1099ipx_phost(struct sockaddr *sa) 1100{ 1101 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1102 struct sockaddr_ipx work; 1103 static union ipx_net ipx_zeronet; 1104 char *p; 1105 struct ipx_addr in; 1106 1107 work = *sipx; 1108 in = work.sipx_addr; 1109 1110 work.sipx_addr.x_port = 0; 1111 work.sipx_addr.x_net = ipx_zeronet; 1112 p = ipx_print((struct sockaddr *)&work); 1113 if (strncmp("*.", p, 2) == 0) p += 2; 1114 1115 return(p); 1116} 1117 1118void 1119upHex(char *p0) 1120{ 1121 char *p = p0; 1122 1123 for (; *p; p++) 1124 switch (*p) { 1125 1126 case 'a': 1127 case 'b': 1128 case 'c': 1129 case 'd': 1130 case 'e': 1131 case 'f': 1132 *p += ('A' - 'a'); 1133 break; 1134 } 1135} 1136