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 * @(#)route.c 8.6 (Berkeley) 4/28/95 34 * $FreeBSD: src/usr.bin/netstat/route.c,v 1.41.2.14 2002/07/17 02:22:22 kbyanc Exp $ 35 * $DragonFly: src/usr.bin/netstat/route.c,v 1.4 2003/11/14 09:56:03 hmp Exp $ 36 */ 37 38 #include <sys/param.h> 39 #include <sys/protosw.h> 40 #include <sys/socket.h> 41 #include <sys/time.h> 42 43 #include <net/ethernet.h> 44 #include <net/if.h> 45 #include <net/if_var.h> 46 #include <net/if_dl.h> 47 #include <net/if_types.h> 48 #include <net/route.h> 49 50 #include <netinet/in.h> 51 #include <netipx/ipx.h> 52 #include <netatalk/at.h> 53 #include <netgraph/socket/ng_socket.h> 54 55 #ifdef NS 56 #include <netns/ns.h> 57 #endif 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 */ 83 struct 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 } 106 }; 107 108 typedef union { 109 long dummy; /* Helps align structure. */ 110 struct sockaddr u_sa; 111 u_short u_data[128]; 112 } sa_u; 113 114 static sa_u pt_u; 115 116 int do_rtent = 0; 117 struct rtentry rtentry; 118 struct radix_node rnode; 119 struct radix_mask rmask; 120 struct radix_node_head *rt_tables[AF_MAX+1]; 121 122 int NewTree = 0; 123 124 static struct sockaddr *kgetsa (struct sockaddr *); 125 static void size_cols (int ef, struct radix_node *rn); 126 static void size_cols_tree (struct radix_node *rn); 127 static void size_cols_rtentry (struct rtentry *rt); 128 static void p_tree (struct radix_node *); 129 static void p_rtnode (void); 130 static void ntreestuff (void); 131 static void np_rtentry (struct rt_msghdr *); 132 static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 133 static const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, 134 int flags); 135 static void p_flags (int, char *); 136 static const char *fmt_flags(int f); 137 static void p_rtentry (struct rtentry *); 138 static u_long forgemask (u_long); 139 static void domask (char *, u_long, u_long); 140 141 /* 142 * Print routing tables. 143 */ 144 void 145 routepr(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 */ 184 void 185 pr_family(int af) 186 { 187 char *afname; 188 189 switch (af) { 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 #ifdef NS 202 case AF_NS: 203 afname = "XNS"; 204 break; 205 #endif 206 case AF_ISO: 207 afname = "ISO"; 208 break; 209 case AF_APPLETALK: 210 afname = "AppleTalk"; 211 break; 212 case AF_CCITT: 213 afname = "X.25"; 214 break; 215 case AF_NETGRAPH: 216 afname = "Netgraph"; 217 break; 218 default: 219 afname = NULL; 220 break; 221 } 222 if (afname) 223 printf("\n%s:\n", afname); 224 else 225 printf("\nProtocol Family %d:\n", af); 226 } 227 228 /* column widths; each followed by one space */ 229 #ifndef INET6 230 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 231 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 232 #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ 233 #else 234 #define WID_DST_DEFAULT(af) \ 235 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 236 #define WID_GW_DEFAULT(af) \ 237 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 238 #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 :6)) 239 #endif /*INET6*/ 240 241 static int wid_dst; 242 static int wid_gw; 243 static int wid_flags; 244 static int wid_refs; 245 static int wid_use; 246 static int wid_mtu; 247 static int wid_if; 248 static int wid_expire; 249 250 static void 251 size_cols(int ef, struct radix_node *rn) 252 { 253 wid_dst = WID_DST_DEFAULT(ef); 254 wid_gw = WID_GW_DEFAULT(ef); 255 wid_flags = 6; 256 wid_refs = 6; 257 wid_use = 8; 258 wid_mtu = 6; 259 wid_if = WID_IF_DEFAULT(ef); 260 wid_expire = 6; 261 262 if (Wflag) 263 size_cols_tree(rn); 264 } 265 266 static void 267 size_cols_tree(struct radix_node *rn) 268 { 269 again: 270 kget(rn, rnode); 271 if (rnode.rn_bit < 0) { 272 if ((rnode.rn_flags & RNF_ROOT) == 0) { 273 kget(rn, rtentry); 274 size_cols_rtentry(&rtentry); 275 } 276 if ((rn = rnode.rn_dupedkey)) 277 goto again; 278 } else { 279 rn = rnode.rn_right; 280 size_cols_tree(rnode.rn_left); 281 size_cols_tree(rn); 282 } 283 } 284 285 static void 286 size_cols_rtentry(struct rtentry *rt) 287 { 288 static struct ifnet ifnet, *lastif; 289 struct rtentry parent; 290 static char buffer[100]; 291 const char *bp; 292 struct sockaddr *sa; 293 sa_u addr, mask; 294 int len; 295 296 /* 297 * Don't print protocol-cloned routes unless -a. 298 */ 299 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 300 kget(rt->rt_parent, parent); 301 if (parent.rt_flags & RTF_PRCLONING) 302 return; 303 } 304 305 bzero(&addr, sizeof(addr)); 306 if ((sa = kgetsa(rt_key(rt)))) 307 bcopy(sa, &addr, sa->sa_len); 308 bzero(&mask, sizeof(mask)); 309 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 310 bcopy(sa, &mask, sa->sa_len); 311 bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); 312 len = strlen(bp); 313 wid_dst = MAX(len, wid_dst); 314 315 bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); 316 len = strlen(bp); 317 wid_gw = MAX(len, wid_gw); 318 319 bp = fmt_flags(rt->rt_flags); 320 len = strlen(bp); 321 wid_flags = MAX(len, wid_flags); 322 323 if (addr.u_sa.sa_family == AF_INET || Wflag) { 324 len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); 325 wid_refs = MAX(len, wid_refs); 326 len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); 327 wid_use = MAX(len, wid_use); 328 if (Wflag && rt->rt_rmx.rmx_mtu != 0) { 329 len = snprintf(buffer, sizeof(buffer), 330 "%lu", rt->rt_rmx.rmx_mtu); 331 wid_mtu = MAX(len, wid_mtu); 332 } 333 } 334 if (rt->rt_ifp) { 335 if (rt->rt_ifp != lastif) { 336 len = snprintf(buffer, sizeof(buffer), "%d", 337 ifnet.if_unit); 338 kget(rt->rt_ifp, ifnet); 339 kread((u_long)ifnet.if_name, buffer, sizeof(buffer)); 340 lastif = rt->rt_ifp; 341 len += strlen(buffer); 342 wid_if = MAX(len, wid_if); 343 } 344 if (rt->rt_rmx.rmx_expire) { 345 time_t expire_time; 346 347 if ((expire_time = 348 rt->rt_rmx.rmx_expire - time(NULL)) > 0) { 349 snprintf(buffer, sizeof(buffer), "%d", 350 (int)expire_time); 351 wid_expire = MAX(len, wid_expire); 352 } 353 } 354 } 355 } 356 357 358 /* 359 * Print header for routing table columns. 360 */ 361 void 362 pr_rthdr(int af) 363 { 364 365 if (Aflag) 366 printf("%-8.8s ","Address"); 367 if (af == AF_INET || Wflag) { 368 if (Wflag) { 369 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s %*s\n", 370 wid_dst, wid_dst, "Destination", 371 wid_gw, wid_gw, "Gateway", 372 wid_flags, wid_flags, "Flags", 373 wid_refs, wid_refs, "Refs", 374 wid_use, wid_use, "Use", 375 wid_mtu, wid_mtu, "Mtu", 376 wid_if, wid_if, "Netif", 377 wid_expire, "Expire"); 378 } else { 379 printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", 380 wid_dst, wid_dst, "Destination", 381 wid_gw, wid_gw, "Gateway", 382 wid_flags, wid_flags, "Flags", 383 wid_refs, wid_refs, "Refs", 384 wid_use, wid_use, "Use", 385 wid_if, wid_if, "Netif", 386 wid_expire, "Expire"); 387 } 388 } else { 389 printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", 390 wid_dst, wid_dst, "Destination", 391 wid_gw, wid_gw, "Gateway", 392 wid_flags, wid_flags, "Flags", 393 wid_if, wid_if, "Netif", 394 wid_expire, "Expire"); 395 } 396 } 397 398 static struct sockaddr * 399 kgetsa(struct sockaddr *dst) 400 { 401 402 kget(dst, pt_u.u_sa); 403 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 404 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 405 return (&pt_u.u_sa); 406 } 407 408 static void 409 p_tree(struct radix_node *rn) 410 { 411 412 again: 413 kget(rn, rnode); 414 if (rnode.rn_bit < 0) { 415 if (Aflag) 416 printf("%-8.8lx ", (u_long)rn); 417 if (rnode.rn_flags & RNF_ROOT) { 418 if (Aflag) 419 printf("(root node)%s", 420 rnode.rn_dupedkey ? " =>\n" : "\n"); 421 } else if (do_rtent) { 422 kget(rn, rtentry); 423 p_rtentry(&rtentry); 424 if (Aflag) 425 p_rtnode(); 426 } else { 427 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 428 NULL, 0, 44); 429 putchar('\n'); 430 } 431 if ((rn = rnode.rn_dupedkey)) 432 goto again; 433 } else { 434 if (Aflag && do_rtent) { 435 printf("%-8.8lx ", (u_long)rn); 436 p_rtnode(); 437 } 438 rn = rnode.rn_right; 439 p_tree(rnode.rn_left); 440 p_tree(rn); 441 } 442 } 443 444 char nbuf[20]; 445 446 static void 447 p_rtnode(void) 448 { 449 struct radix_mask *rm = rnode.rn_mklist; 450 451 if (rnode.rn_bit < 0) { 452 if (rnode.rn_mask) { 453 printf("\t mask "); 454 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 455 NULL, 0, -1); 456 } else if (rm == 0) 457 return; 458 } else { 459 sprintf(nbuf, "(%d)", rnode.rn_bit); 460 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 461 } 462 while (rm) { 463 kget(rm, rmask); 464 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 465 printf(" mk = %8.8lx {(%d),%s", 466 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 467 if (rmask.rm_flags & RNF_NORMAL) { 468 struct radix_node rnode_aux; 469 printf(" <normal>, "); 470 kget(rmask.rm_leaf, rnode_aux); 471 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 472 NULL, 0, -1); 473 } else 474 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 475 NULL, 0, -1); 476 putchar('}'); 477 if ((rm = rmask.rm_mklist)) 478 printf(" ->"); 479 } 480 putchar('\n'); 481 } 482 483 static void 484 ntreestuff(void) 485 { 486 size_t needed; 487 int mib[6]; 488 char *buf, *next, *lim; 489 register struct rt_msghdr *rtm; 490 491 mib[0] = CTL_NET; 492 mib[1] = PF_ROUTE; 493 mib[2] = 0; 494 mib[3] = 0; 495 mib[4] = NET_RT_DUMP; 496 mib[5] = 0; 497 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 498 err(1, "sysctl: net.route.0.0.dump estimate"); 499 } 500 501 if ((buf = malloc(needed)) == 0) { 502 err(2, "malloc(%lu)", (unsigned long)needed); 503 } 504 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 505 err(1, "sysctl: net.route.0.0.dump"); 506 } 507 lim = buf + needed; 508 for (next = buf; next < lim; next += rtm->rtm_msglen) { 509 rtm = (struct rt_msghdr *)next; 510 np_rtentry(rtm); 511 } 512 } 513 514 static void 515 np_rtentry(struct rt_msghdr *rtm) 516 { 517 register struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 518 #ifdef notdef 519 static int masks_done, banner_printed; 520 #endif 521 static int old_af; 522 int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 523 524 #ifdef notdef 525 /* for the moment, netmasks are skipped over */ 526 if (!banner_printed) { 527 printf("Netmasks:\n"); 528 banner_printed = 1; 529 } 530 if (masks_done == 0) { 531 if (rtm->rtm_addrs != RTA_DST ) { 532 masks_done = 1; 533 af = sa->sa_family; 534 } 535 } else 536 #endif 537 af = sa->sa_family; 538 if (af != old_af) { 539 pr_family(af); 540 old_af = af; 541 } 542 if (rtm->rtm_addrs == RTA_DST) 543 p_sockaddr(sa, NULL, 0, 36); 544 else { 545 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 546 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 547 p_sockaddr(sa, NULL, 0, 18); 548 } 549 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 550 putchar('\n'); 551 } 552 553 static void 554 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 555 { 556 const char *cp; 557 558 cp = fmt_sockaddr(sa, mask, flags); 559 560 if (width < 0 ) 561 printf("%s ", cp); 562 else { 563 if (numeric_addr) 564 printf("%-*s ", width, cp); 565 else 566 printf("%-*.*s ", width, width, cp); 567 } 568 } 569 570 static const char * 571 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 572 { 573 static char workbuf[128]; 574 char *cplim; 575 char *cp = workbuf; 576 577 switch(sa->sa_family) { 578 case AF_INET: 579 { 580 register struct sockaddr_in *sin = (struct sockaddr_in *)sa; 581 582 if ((sin->sin_addr.s_addr == INADDR_ANY) && 583 mask && 584 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 585 ==0L) 586 cp = "default" ; 587 else if (flags & RTF_HOST) 588 cp = routename(sin->sin_addr.s_addr); 589 else if (mask) 590 cp = netname(sin->sin_addr.s_addr, 591 ntohl(((struct sockaddr_in *)mask) 592 ->sin_addr.s_addr)); 593 else 594 cp = netname(sin->sin_addr.s_addr, 0L); 595 break; 596 } 597 598 #ifdef INET6 599 case AF_INET6: 600 { 601 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 602 struct in6_addr *in6 = &sa6->sin6_addr; 603 604 /* 605 * XXX: This is a special workaround for KAME kernels. 606 * sin6_scope_id field of SA should be set in the future. 607 */ 608 if (IN6_IS_ADDR_LINKLOCAL(in6) || 609 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 610 /* XXX: override is ok? */ 611 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 612 *(u_short *)&in6->s6_addr[2] = 0; 613 } 614 615 if (flags & RTF_HOST) 616 cp = routename6(sa6); 617 else if (mask) 618 cp = netname6(sa6, 619 &((struct sockaddr_in6 *)mask)->sin6_addr); 620 else { 621 cp = netname6(sa6, NULL); 622 } 623 break; 624 } 625 #endif /*INET6*/ 626 627 case AF_IPX: 628 { 629 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 630 if (ipx_nullnet(satoipx_addr(work))) 631 cp = "default"; 632 else 633 cp = ipx_print(sa); 634 break; 635 } 636 case AF_APPLETALK: 637 { 638 if (!(flags & RTF_HOST) && mask) 639 cp = atalk_print2(sa,mask,9); 640 else 641 cp = atalk_print(sa,11); 642 break; 643 } 644 case AF_NETGRAPH: 645 { 646 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 647 break; 648 } 649 #ifdef NS 650 case AF_NS: 651 cp = ns_print(sa); 652 break; 653 #endif 654 655 case AF_LINK: 656 { 657 register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 658 659 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 660 sdl->sdl_slen == 0) 661 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 662 else 663 switch (sdl->sdl_type) { 664 665 case IFT_ETHER: 666 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 667 cp = ether_ntoa((struct ether_addr *) 668 (sdl->sdl_data + sdl->sdl_nlen)); 669 break; 670 } 671 /* FALLTHROUGH */ 672 default: 673 cp = link_ntoa(sdl); 674 break; 675 } 676 break; 677 } 678 679 default: 680 { 681 register u_char *s = (u_char *)sa->sa_data, *slim; 682 683 slim = sa->sa_len + (u_char *) sa; 684 cplim = cp + sizeof(workbuf) - 6; 685 cp += sprintf(cp, "(%d)", sa->sa_family); 686 while (s < slim && cp < cplim) { 687 cp += sprintf(cp, " %02x", *s++); 688 if (s < slim) 689 cp += sprintf(cp, "%02x", *s++); 690 } 691 cp = workbuf; 692 } 693 } 694 695 return (cp); 696 } 697 698 static void 699 p_flags(int f, char *format) 700 { 701 printf(format, fmt_flags(f)); 702 } 703 704 static const char * 705 fmt_flags(int f) 706 { 707 static char name[33]; 708 char *flags; 709 struct bits *p = bits; 710 711 for (flags = name; p->b_mask; p++) 712 if (p->b_mask & f) 713 *flags++ = p->b_val; 714 *flags = '\0'; 715 return (name); 716 } 717 718 static void 719 p_rtentry(struct rtentry *rt) 720 { 721 static struct ifnet ifnet, *lastif; 722 struct rtentry parent; 723 static char buffer[128]; 724 static char prettyname[128]; 725 struct sockaddr *sa; 726 sa_u addr, mask; 727 728 /* 729 * Don't print protocol-cloned routes unless -a. 730 */ 731 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 732 kget(rt->rt_parent, parent); 733 if (parent.rt_flags & RTF_PRCLONING) 734 return; 735 } 736 737 bzero(&addr, sizeof(addr)); 738 if ((sa = kgetsa(rt_key(rt)))) 739 bcopy(sa, &addr, sa->sa_len); 740 bzero(&mask, sizeof(mask)); 741 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 742 bcopy(sa, &mask, sa->sa_len); 743 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, wid_dst); 744 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); 745 snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); 746 p_flags(rt->rt_flags, buffer); 747 if (addr.u_sa.sa_family == AF_INET || Wflag) { 748 printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, 749 wid_use, rt->rt_use); 750 if (Wflag) { 751 if (rt->rt_rmx.rmx_mtu != 0) 752 printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); 753 else 754 printf("%*s ", wid_mtu, ""); 755 } 756 } 757 if (rt->rt_ifp) { 758 if (rt->rt_ifp != lastif) { 759 kget(rt->rt_ifp, ifnet); 760 kread((u_long)ifnet.if_name, buffer, sizeof(buffer)); 761 lastif = rt->rt_ifp; 762 snprintf(prettyname, sizeof(prettyname), 763 "%s%d", buffer, ifnet.if_unit); 764 } 765 printf("%*.*s", wid_if, wid_if, prettyname); 766 if (rt->rt_rmx.rmx_expire) { 767 time_t expire_time; 768 769 if ((expire_time = 770 rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0) 771 printf(" %*d", wid_expire, (int)expire_time); 772 } 773 if (rt->rt_nodes[0].rn_dupedkey) 774 printf(" =>"); 775 } 776 putchar('\n'); 777 } 778 779 char * 780 routename(u_long in) 781 { 782 register char *cp; 783 static char line[MAXHOSTNAMELEN]; 784 struct hostent *hp; 785 786 cp = 0; 787 if (!numeric_addr) { 788 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 789 AF_INET); 790 if (hp) { 791 cp = hp->h_name; 792 trimdomain(cp, strlen(cp)); 793 } 794 } 795 if (cp) { 796 strncpy(line, cp, sizeof(line) - 1); 797 line[sizeof(line) - 1] = '\0'; 798 } else { 799 #define C(x) ((x) & 0xff) 800 in = ntohl(in); 801 sprintf(line, "%lu.%lu.%lu.%lu", 802 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 803 } 804 return (line); 805 } 806 807 static u_long 808 forgemask(u_long a) 809 { 810 u_long m; 811 812 if (IN_CLASSA(a)) 813 m = IN_CLASSA_NET; 814 else if (IN_CLASSB(a)) 815 m = IN_CLASSB_NET; 816 else 817 m = IN_CLASSC_NET; 818 return (m); 819 } 820 821 static void 822 domask(char *dst, u_long addr, u_long mask) 823 { 824 register int b, i; 825 826 if (!mask || (forgemask(addr) == mask)) { 827 *dst = '\0'; 828 return; 829 } 830 i = 0; 831 for (b = 0; b < 32; b++) 832 if (mask & (1 << b)) { 833 register int bb; 834 835 i = b; 836 for (bb = b+1; bb < 32; bb++) 837 if (!(mask & (1 << bb))) { 838 i = -1; /* noncontig */ 839 break; 840 } 841 break; 842 } 843 if (i == -1) 844 sprintf(dst, "&0x%lx", mask); 845 else 846 sprintf(dst, "/%d", 32-i); 847 } 848 849 /* 850 * Return the name of the network whose address is given. 851 * The address is assumed to be that of a net or subnet, not a host. 852 */ 853 char * 854 netname(u_long in, u_long mask) 855 { 856 char *cp = 0; 857 static char line[MAXHOSTNAMELEN]; 858 struct netent *np = 0; 859 u_long dmask; 860 register u_long i; 861 862 #define NSHIFT(m) ( \ 863 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 864 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 865 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 866 0) 867 868 i = ntohl(in); 869 dmask = forgemask(i); 870 if (!numeric_addr && i) { 871 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 872 if (np == NULL && mask == 0) 873 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 874 if (np != NULL) { 875 cp = np->n_name; 876 trimdomain(cp, strlen(cp)); 877 } 878 } 879 #undef NSHIFT 880 if (cp != NULL) { 881 strncpy(line, cp, sizeof(line) - 1); 882 line[sizeof(line) - 1] = '\0'; 883 } else { 884 switch (dmask) { 885 case IN_CLASSA_NET: 886 if ((i & IN_CLASSA_HOST) == 0) { 887 sprintf(line, "%lu", C(i >> 24)); 888 break; 889 } 890 /* FALLTHROUGH */ 891 case IN_CLASSB_NET: 892 if ((i & IN_CLASSB_HOST) == 0) { 893 sprintf(line, "%lu.%lu", 894 C(i >> 24), C(i >> 16)); 895 break; 896 } 897 /* FALLTHROUGH */ 898 case IN_CLASSC_NET: 899 if ((i & IN_CLASSC_HOST) == 0) { 900 sprintf(line, "%lu.%lu.%lu", 901 C(i >> 24), C(i >> 16), C(i >> 8)); 902 break; 903 } 904 /* FALLTHROUGH */ 905 default: 906 sprintf(line, "%lu.%lu.%lu.%lu", 907 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 908 break; 909 } 910 } 911 domask(line + strlen(line), i, mask); 912 return (line); 913 } 914 915 #ifdef INET6 916 char * 917 netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 918 { 919 static char line[MAXHOSTNAMELEN]; 920 u_char *p = (u_char *)mask; 921 u_char *lim; 922 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 923 924 if (mask) { 925 for (masklen = 0, lim = p + 16; p < lim; p++) { 926 switch (*p) { 927 case 0xff: 928 masklen += 8; 929 break; 930 case 0xfe: 931 masklen += 7; 932 break; 933 case 0xfc: 934 masklen += 6; 935 break; 936 case 0xf8: 937 masklen += 5; 938 break; 939 case 0xf0: 940 masklen += 4; 941 break; 942 case 0xe0: 943 masklen += 3; 944 break; 945 case 0xc0: 946 masklen += 2; 947 break; 948 case 0x80: 949 masklen += 1; 950 break; 951 case 0x00: 952 break; 953 default: 954 illegal ++; 955 break; 956 } 957 } 958 if (illegal) 959 fprintf(stderr, "illegal prefixlen\n"); 960 } 961 else 962 masklen = 128; 963 964 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 965 return("default"); 966 967 if (numeric_addr) 968 flag |= NI_NUMERICHOST; 969 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 970 NULL, 0, flag); 971 972 if (numeric_addr) 973 sprintf(&line[strlen(line)], "/%d", masklen); 974 975 return line; 976 } 977 978 char * 979 routename6(struct sockaddr_in6 *sa6) 980 { 981 static char line[MAXHOSTNAMELEN]; 982 int flag = NI_WITHSCOPEID; 983 /* use local variable for safety */ 984 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),}; 985 986 sa6_local.sin6_addr = sa6->sin6_addr; 987 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 988 989 if (numeric_addr) 990 flag |= NI_NUMERICHOST; 991 992 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 993 line, sizeof(line), NULL, 0, flag); 994 995 return line; 996 } 997 #endif /*INET6*/ 998 999 /* 1000 * Print routing statistics 1001 */ 1002 void 1003 rt_stats(u_long rtsaddr, u_long rttaddr) 1004 { 1005 struct rtstat rtstat; 1006 int rttrash; 1007 1008 if (rtsaddr == 0) { 1009 printf("rtstat: symbol not in namelist\n"); 1010 return; 1011 } 1012 if (rttaddr == 0) { 1013 printf("rttrash: symbol not in namelist\n"); 1014 return; 1015 } 1016 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 1017 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 1018 printf("routing:\n"); 1019 1020 #define p(f, m) if (rtstat.f || sflag <= 1) \ 1021 printf(m, rtstat.f, plural(rtstat.f)) 1022 1023 p(rts_badredirect, "\t%u bad routing redirect%s\n"); 1024 p(rts_dynamic, "\t%u dynamically created route%s\n"); 1025 p(rts_newgateway, "\t%u new gateway%s due to redirects\n"); 1026 p(rts_unreach, "\t%u destination%s found unreachable\n"); 1027 p(rts_wildcard, "\t%u use%s of a wildcard route\n"); 1028 #undef p 1029 1030 if (rttrash || sflag <= 1) 1031 printf("\t%u route%s not in table but not freed\n", 1032 rttrash, plural(rttrash)); 1033 } 1034 1035 char * 1036 ipx_print(struct sockaddr *sa) 1037 { 1038 u_short port; 1039 struct servent *sp = 0; 1040 char *net = "", *host = ""; 1041 register char *p; 1042 register u_char *q; 1043 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 1044 static char mybuf[50]; 1045 char cport[10], chost[15], cnet[15]; 1046 1047 port = ntohs(work.x_port); 1048 1049 if (ipx_nullnet(work) && ipx_nullhost(work)) { 1050 1051 if (port) { 1052 if (sp) 1053 sprintf(mybuf, "*.%s", sp->s_name); 1054 else 1055 sprintf(mybuf, "*.%x", port); 1056 } else 1057 sprintf(mybuf, "*.*"); 1058 1059 return (mybuf); 1060 } 1061 1062 if (ipx_wildnet(work)) 1063 net = "any"; 1064 else if (ipx_nullnet(work)) 1065 net = "*"; 1066 else { 1067 q = work.x_net.c_net; 1068 sprintf(cnet, "%02x%02x%02x%02x", 1069 q[0], q[1], q[2], q[3]); 1070 for (p = cnet; *p == '0' && p < cnet + 8; p++) 1071 continue; 1072 net = p; 1073 } 1074 1075 if (ipx_wildhost(work)) 1076 host = "any"; 1077 else if (ipx_nullhost(work)) 1078 host = "*"; 1079 else { 1080 q = work.x_host.c_host; 1081 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 1082 q[0], q[1], q[2], q[3], q[4], q[5]); 1083 for (p = chost; *p == '0' && p < chost + 12; p++) 1084 continue; 1085 host = p; 1086 } 1087 1088 if (port) { 1089 if (strcmp(host, "*") == 0) 1090 host = ""; 1091 if (sp) 1092 snprintf(cport, sizeof(cport), 1093 "%s%s", *host ? "." : "", sp->s_name); 1094 else 1095 snprintf(cport, sizeof(cport), 1096 "%s%x", *host ? "." : "", port); 1097 } else 1098 *cport = 0; 1099 1100 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 1101 return(mybuf); 1102 } 1103 1104 char * 1105 ipx_phost(struct sockaddr *sa) 1106 { 1107 register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 1108 struct sockaddr_ipx work; 1109 static union ipx_net ipx_zeronet; 1110 char *p; 1111 struct ipx_addr in; 1112 1113 work = *sipx; 1114 in = work.sipx_addr; 1115 1116 work.sipx_addr.x_port = 0; 1117 work.sipx_addr.x_net = ipx_zeronet; 1118 p = ipx_print((struct sockaddr *)&work); 1119 if (strncmp("*.", p, 2) == 0) p += 2; 1120 1121 return(p); 1122 } 1123 1124 #ifdef NS 1125 short ns_nullh[] = {0,0,0}; 1126 short ns_bh[] = {-1,-1,-1}; 1127 1128 char * 1129 ns_print(struct sockaddr *sa) 1130 { 1131 register struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 1132 struct ns_addr work; 1133 union { union ns_net net_e; u_long long_e; } net; 1134 u_short port; 1135 static char mybuf[50], cport[10], chost[25]; 1136 char *host = ""; 1137 register char *p; register u_char *q; 1138 1139 work = sns->sns_addr; 1140 port = ntohs(work.x_port); 1141 work.x_port = 0; 1142 net.net_e = work.x_net; 1143 if (ns_nullhost(work) && net.long_e == 0) { 1144 if (port ) { 1145 sprintf(mybuf, "*.%xH", port); 1146 upHex(mybuf); 1147 } else 1148 sprintf(mybuf, "*.*"); 1149 return (mybuf); 1150 } 1151 1152 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) { 1153 host = "any"; 1154 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 1155 host = "*"; 1156 } else { 1157 q = work.x_host.c_host; 1158 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 1159 q[0], q[1], q[2], q[3], q[4], q[5]); 1160 for (p = chost; *p == '0' && p < chost + 12; p++) 1161 continue; 1162 host = p; 1163 } 1164 if (port) 1165 sprintf(cport, ".%xH", htons(port)); 1166 else 1167 *cport = 0; 1168 1169 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport); 1170 upHex(mybuf); 1171 return(mybuf); 1172 } 1173 1174 char * 1175 ns_phost(struct sockaddr *sa) 1176 { 1177 register struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 1178 struct sockaddr_ns work; 1179 static union ns_net ns_zeronet; 1180 char *p; 1181 1182 work = *sns; 1183 work.sns_addr.x_port = 0; 1184 work.sns_addr.x_net = ns_zeronet; 1185 1186 p = ns_print((struct sockaddr *)&work); 1187 if (strncmp("0H.", p, 3) == 0) 1188 p += 3; 1189 return(p); 1190 } 1191 #endif 1192 1193 void 1194 upHex(char *p0) 1195 { 1196 register char *p = p0; 1197 1198 for (; *p; p++) 1199 switch (*p) { 1200 1201 case 'a': 1202 case 'b': 1203 case 'c': 1204 case 'd': 1205 case 'e': 1206 case 'f': 1207 *p += ('A' - 'a'); 1208 break; 1209 } 1210 } 1211