route.c revision 1.27
1 /* $NetBSD: route.c,v 1.27 1998/05/14 22:48:50 kml Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "from: @(#)route.c 8.3 (Berkeley) 3/9/94"; 40 #else 41 __RCSID("$NetBSD: route.c,v 1.27 1998/05/14 22:48:50 kml Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/protosw.h> 47 #include <sys/socket.h> 48 #include <sys/mbuf.h> 49 50 #include <net/if.h> 51 #include <net/if_dl.h> 52 #include <net/if_types.h> 53 #define _KERNEL 54 #include <net/route.h> 55 #undef _KERNEL 56 #include <netinet/in.h> 57 #include <netatalk/at.h> 58 59 #include <netns/ns.h> 60 61 #include <sys/sysctl.h> 62 63 #include <netdb.h> 64 #include <stdio.h> 65 #include <stdlib.h> 66 #include <string.h> 67 #include <unistd.h> 68 #include "netstat.h" 69 70 #define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 71 72 /* 73 * Definitions for showing gateway flags. 74 */ 75 struct bits { 76 short b_mask; 77 char b_val; 78 } bits[] = { 79 { RTF_UP, 'U' }, 80 { RTF_GATEWAY, 'G' }, 81 { RTF_HOST, 'H' }, 82 { RTF_REJECT, 'R' }, 83 { RTF_DYNAMIC, 'D' }, 84 { RTF_MODIFIED, 'M' }, 85 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 86 { RTF_MASK, 'm' }, /* Mask Present -- for routing messages only */ 87 { RTF_CLONING, 'C' }, 88 { RTF_XRESOLVE, 'X' }, 89 { RTF_LLINFO, 'L' }, 90 { RTF_STATIC, 'S' }, 91 { RTF_PROTO1, '1' }, 92 { RTF_PROTO2, '2' }, 93 { 0 } 94 }; 95 96 static union { 97 struct sockaddr u_sa; 98 u_short u_data[128]; 99 } pt_u; 100 101 int do_rtent = 0; 102 struct rtentry rtentry; 103 struct radix_node rnode; 104 struct radix_mask rmask; 105 106 int NewTree = 0; 107 108 static struct sockaddr *kgetsa __P((struct sockaddr *)); 109 static void p_tree __P((struct radix_node *)); 110 static void p_rtnode __P((void)); 111 static void ntreestuff __P((void)); 112 static void np_rtentry __P((struct rt_msghdr *)); 113 static void p_sockaddr __P((const struct sockaddr *, 114 const struct sockaddr *, int, int)); 115 static void p_flags __P((int, char *)); 116 static void p_rtentry __P((struct rtentry *)); 117 static void ntreestuff __P((void)); 118 static u_long forgemask __P((u_long)); 119 static void domask __P((char *, u_long, u_long)); 120 121 /* 122 * Print routing tables. 123 */ 124 void 125 routepr(rtree) 126 u_long rtree; 127 { 128 struct radix_node_head *rnh, head; 129 int i; 130 131 printf("Routing tables\n"); 132 133 if (Aflag == 0 && NewTree) 134 ntreestuff(); 135 else { 136 if (rtree == 0) { 137 printf("rt_tables: symbol not in namelist\n"); 138 return; 139 } 140 141 kget(rtree, rt_tables); 142 for (i = 0; i <= AF_MAX; i++) { 143 if ((rnh = rt_tables[i]) == 0) 144 continue; 145 kget(rnh, head); 146 if (i == AF_UNSPEC) { 147 if (Aflag && af == 0) { 148 printf("Netmasks:\n"); 149 p_tree(head.rnh_treetop); 150 } 151 } else if (af == AF_UNSPEC || af == i) { 152 pr_family(i); 153 do_rtent = 1; 154 pr_rthdr(); 155 p_tree(head.rnh_treetop); 156 } 157 } 158 } 159 } 160 161 /* 162 * Print address family header before a section of the routing table. 163 */ 164 void 165 pr_family(af) 166 int af; 167 { 168 char *afname; 169 170 switch (af) { 171 case AF_INET: 172 afname = "Internet"; 173 break; 174 case AF_NS: 175 afname = "XNS"; 176 break; 177 case AF_ISO: 178 afname = "ISO"; 179 break; 180 case AF_APPLETALK: 181 afname = "AppleTalk"; 182 break; 183 case AF_CCITT: 184 afname = "X.25"; 185 break; 186 default: 187 afname = NULL; 188 break; 189 } 190 if (afname) 191 printf("\n%s:\n", afname); 192 else 193 printf("\nProtocol Family %d:\n", af); 194 } 195 196 /* column widths; each followed by one space */ 197 #define WID_DST 18 /* width of destination column */ 198 #define WID_GW 18 /* width of gateway column */ 199 200 /* 201 * Print header for routing table columns. 202 */ 203 void 204 pr_rthdr() 205 { 206 207 if (Aflag) 208 printf("%-8.8s ","Address"); 209 printf("%-*.*s %-*.*s %-6.6s %6.6s%8.8s %6.6s %s\n", 210 WID_DST, WID_DST, "Destination", 211 WID_GW, WID_GW, "Gateway", 212 "Flags", "Refs", "Use", "Mtu", "Interface"); 213 } 214 215 static struct sockaddr * 216 kgetsa(dst) 217 struct sockaddr *dst; 218 { 219 220 kget(dst, pt_u.u_sa); 221 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 222 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 223 return (&pt_u.u_sa); 224 } 225 226 static void 227 p_tree(rn) 228 struct radix_node *rn; 229 { 230 231 again: 232 kget(rn, rnode); 233 if (rnode.rn_b < 0) { 234 if (Aflag) 235 printf("%-8.8lx ", (u_long) rn); 236 if (rnode.rn_flags & RNF_ROOT) { 237 if (Aflag) 238 printf("(root node)%s", 239 rnode.rn_dupedkey ? " =>\n" : "\n"); 240 } else if (do_rtent) { 241 kget(rn, rtentry); 242 p_rtentry(&rtentry); 243 if (Aflag) 244 p_rtnode(); 245 } else { 246 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 247 NULL, 0, 44); 248 putchar('\n'); 249 } 250 if ((rn = rnode.rn_dupedkey) != NULL) 251 goto again; 252 } else { 253 if (Aflag && do_rtent) { 254 printf("%-8.8lx ", (u_long) rn); 255 p_rtnode(); 256 } 257 rn = rnode.rn_r; 258 p_tree(rnode.rn_l); 259 p_tree(rn); 260 } 261 } 262 263 char nbuf[20]; 264 265 static void 266 p_rtnode() 267 { 268 struct radix_mask *rm = rnode.rn_mklist; 269 270 if (rnode.rn_b < 0) { 271 if (rnode.rn_mask) { 272 printf("\t mask "); 273 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 274 NULL, 0, -1); 275 } else if (rm == 0) 276 return; 277 } else { 278 sprintf(nbuf, "(%d)", rnode.rn_b); 279 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long) rnode.rn_l, 280 (u_long) rnode.rn_r); 281 } 282 while (rm) { 283 kget(rm, rmask); 284 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 285 printf(" mk = %8.8lx {(%d),%s", (u_long) rm, 286 -1 - rmask.rm_b, rmask.rm_refs ? nbuf : " "); 287 if (rmask.rm_flags & RNF_NORMAL) { 288 struct radix_node rnode_aux; 289 printf(" <normal>, "); 290 kget(rmask.rm_leaf, rnode_aux); 291 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 292 NULL, 0, -1); 293 } else 294 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 295 NULL, 0, -1); 296 putchar('}'); 297 if ((rm = rmask.rm_mklist) != NULL) 298 printf(" ->"); 299 } 300 putchar('\n'); 301 } 302 303 static void 304 ntreestuff() 305 { 306 size_t needed; 307 int mib[6]; 308 char *buf, *next, *lim; 309 struct rt_msghdr *rtm; 310 311 mib[0] = CTL_NET; 312 mib[1] = PF_ROUTE; 313 mib[2] = 0; 314 mib[3] = 0; 315 mib[4] = NET_RT_DUMP; 316 mib[5] = 0; 317 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 318 { perror("route-sysctl-estimate"); exit(1);} 319 if ((buf = malloc(needed)) == 0) 320 { printf("out of space\n"); exit(1);} 321 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 322 { perror("sysctl of routing table"); exit(1);} 323 lim = buf + needed; 324 for (next = buf; next < lim; next += rtm->rtm_msglen) { 325 rtm = (struct rt_msghdr *)next; 326 np_rtentry(rtm); 327 } 328 } 329 330 static void 331 np_rtentry(rtm) 332 struct rt_msghdr *rtm; 333 { 334 struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 335 #ifdef notdef 336 static int masks_done, banner_printed; 337 #endif 338 static int old_af; 339 int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 340 341 #ifdef notdef 342 /* for the moment, netmasks are skipped over */ 343 if (!banner_printed) { 344 printf("Netmasks:\n"); 345 banner_printed = 1; 346 } 347 if (masks_done == 0) { 348 if (rtm->rtm_addrs != RTA_DST ) { 349 masks_done = 1; 350 af = sa->sa_family; 351 } 352 } else 353 #endif 354 af = sa->sa_family; 355 if (af != old_af) { 356 pr_family(af); 357 old_af = af; 358 } 359 if (rtm->rtm_addrs == RTA_DST) 360 p_sockaddr(sa, NULL, 0, 36); 361 else { 362 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 363 if (sa->sa_len == 0) 364 sa->sa_len = sizeof(long); 365 sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 366 p_sockaddr(sa, NULL, 0, 18); 367 } 368 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 369 putchar('\n'); 370 } 371 372 static void 373 p_sockaddr(sa, mask, flags, width) 374 const struct sockaddr *sa, *mask; 375 int flags, width; 376 { 377 char workbuf[128], *cplim; 378 char *cp = workbuf; 379 380 switch(sa->sa_family) { 381 case AF_INET: 382 { 383 struct sockaddr_in *sin = (struct sockaddr_in *)sa; 384 385 if (sin->sin_addr.s_addr == INADDR_ANY) 386 cp = "default"; 387 else if (flags & RTF_HOST) 388 cp = routename(sin->sin_addr.s_addr); 389 else if (mask) 390 cp = netname(sin->sin_addr.s_addr, 391 ((struct sockaddr_in *)mask)->sin_addr.s_addr); 392 else 393 cp = netname(sin->sin_addr.s_addr, INADDR_ANY); 394 break; 395 } 396 397 case AF_APPLETALK: 398 case 0: 399 { 400 if (!(flags & RTF_HOST) && mask) 401 cp = atalk_print2(sa,mask,11); 402 else 403 cp = atalk_print(sa,11); 404 break; 405 } 406 case AF_NS: 407 cp = ns_print((struct sockaddr *)sa); 408 break; 409 410 case AF_LINK: 411 { 412 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 413 414 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 415 sdl->sdl_slen == 0) 416 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 417 else switch (sdl->sdl_type) { 418 case IFT_FDDI: 419 case IFT_ETHER: 420 { 421 int i; 422 u_char *lla = (u_char *)sdl->sdl_data + 423 sdl->sdl_nlen; 424 425 cplim = ""; 426 for (i = 0; i < sdl->sdl_alen; i++, lla++) { 427 cp += sprintf(cp, "%s%02x", cplim, *lla); 428 cplim = ":"; 429 } 430 cp = workbuf; 431 break; 432 } 433 default: 434 cp = link_ntoa(sdl); 435 break; 436 } 437 break; 438 } 439 440 default: 441 { 442 u_char *s = (u_char *)sa->sa_data, *slim; 443 444 slim = sa->sa_len + (u_char *) sa; 445 cplim = cp + sizeof(workbuf) - 6; 446 cp += sprintf(cp, "(%d)", sa->sa_family); 447 while (s < slim && cp < cplim) { 448 cp += sprintf(cp, " %02x", *s++); 449 if (s < slim) 450 cp += sprintf(cp, "%02x", *s++); 451 } 452 cp = workbuf; 453 } 454 } 455 if (width < 0 ) 456 printf("%s ", cp); 457 else { 458 if (nflag) 459 printf("%-*s ", width, cp); 460 else 461 printf("%-*.*s ", width, width, cp); 462 } 463 } 464 465 static void 466 p_flags(f, format) 467 int f; 468 char *format; 469 { 470 char name[33], *flags; 471 struct bits *p = bits; 472 473 for (flags = name; p->b_mask; p++) 474 if (p->b_mask & f) 475 *flags++ = p->b_val; 476 *flags = '\0'; 477 printf(format, name); 478 } 479 480 static void 481 p_rtentry(rt) 482 struct rtentry *rt; 483 { 484 static struct ifnet ifnet, *lastif; 485 struct sockaddr *sa, addr, mask; 486 487 if (!(sa = kgetsa(rt_key(rt)))) 488 memset(&addr, 0, sizeof addr); 489 else 490 addr = *sa; 491 if (!rt_mask(rt) || !(sa = kgetsa(rt_mask(rt)))) 492 memset(&mask, 0, sizeof mask); 493 else 494 mask = *sa; 495 p_sockaddr(&addr, &mask, rt->rt_flags, WID_DST); 496 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, WID_GW); 497 p_flags(rt->rt_flags, "%-6.6s "); 498 printf("%6d %8lu ", rt->rt_refcnt, rt->rt_use); 499 if (rt->rt_rmx.rmx_mtu) 500 printf("%6lu", rt->rt_rmx.rmx_mtu); 501 else 502 printf("%6s", "-"); 503 putchar((rt->rt_rmx.rmx_locks & RTV_MTU) ? 'L' : ' '); 504 if (rt->rt_ifp) { 505 if (rt->rt_ifp != lastif) { 506 kget(rt->rt_ifp, ifnet); 507 lastif = rt->rt_ifp; 508 } 509 printf(" %.16s%s", ifnet.if_xname, 510 rt->rt_nodes[0].rn_dupedkey ? " =>" : ""); 511 } 512 putchar('\n'); 513 } 514 515 char * 516 routename(in) 517 u_int32_t in; 518 { 519 char *cp; 520 static char line[MAXHOSTNAMELEN + 1]; 521 struct hostent *hp; 522 static char domain[MAXHOSTNAMELEN + 1]; 523 static int first = 1; 524 525 if (first) { 526 first = 0; 527 if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 528 (cp = strchr(domain, '.'))) 529 (void) strcpy(domain, cp + 1); 530 else 531 domain[0] = 0; 532 } 533 cp = 0; 534 if (!nflag) { 535 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 536 AF_INET); 537 if (hp) { 538 if ((cp = strchr(hp->h_name, '.')) && 539 !strcmp(cp + 1, domain)) 540 *cp = 0; 541 cp = hp->h_name; 542 } 543 } 544 if (cp) 545 strncpy(line, cp, sizeof(line) - 1); 546 else { 547 #define C(x) ((x) & 0xff) 548 in = ntohl(in); 549 sprintf(line, "%u.%u.%u.%u", 550 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 551 } 552 return (line); 553 } 554 555 static u_long 556 forgemask(a) 557 u_long a; 558 { 559 u_long m; 560 561 if (IN_CLASSA(a)) 562 m = IN_CLASSA_NET; 563 else if (IN_CLASSB(a)) 564 m = IN_CLASSB_NET; 565 else 566 m = IN_CLASSC_NET; 567 return (m); 568 } 569 570 static void 571 domask(dst, addr, mask) 572 char *dst; 573 u_long addr, mask; 574 { 575 int b, i; 576 577 if (!mask || (forgemask(addr) == mask)) { 578 *dst = '\0'; 579 return; 580 } 581 i = 0; 582 for (b = 0; b < 32; b++) 583 if (mask & (1 << b)) { 584 int bb; 585 586 i = b; 587 for (bb = b+1; bb < 32; bb++) 588 if (!(mask & (1 << bb))) { 589 i = -1; /* noncontig */ 590 break; 591 } 592 break; 593 } 594 if (i == -1) 595 sprintf(dst, "&0x%lx", mask); 596 else 597 sprintf(dst, "/%d", 32-i); 598 } 599 600 /* 601 * Return the name of the network whose address is given. 602 * The address is assumed to be that of a net or subnet, not a host. 603 */ 604 char * 605 netname(in, mask) 606 u_int32_t in, mask; 607 { 608 char *cp = 0; 609 static char line[MAXHOSTNAMELEN + 4]; 610 struct netent *np = 0; 611 u_int32_t net, omask; 612 u_int32_t i; 613 int subnetshift; 614 615 i = ntohl(in); 616 omask = mask = ntohl(mask); 617 if (!nflag && i != INADDR_ANY) { 618 if (mask == INADDR_ANY) { 619 switch (mask = forgemask(i)) { 620 case IN_CLASSA_NET: 621 subnetshift = 8; 622 break; 623 case IN_CLASSB_NET: 624 subnetshift = 8; 625 break; 626 case IN_CLASSC_NET: 627 subnetshift = 4; 628 break; 629 default: 630 abort(); 631 } 632 /* 633 * If there are more bits than the standard mask 634 * would suggest, subnets must be in use. 635 * Guess at the subnet mask, assuming reasonable 636 * width subnet fields. 637 */ 638 while (i &~ mask) 639 mask = (long)mask >> subnetshift; 640 } 641 net = i & mask; 642 while ((mask & 1) == 0) 643 mask >>= 1, net >>= 1; 644 np = getnetbyaddr(net, AF_INET); 645 if (np) 646 cp = np->n_name; 647 } 648 if (cp) 649 strncpy(line, cp, sizeof(line) - 1); 650 else if ((i & 0xffffff) == 0) 651 sprintf(line, "%u", C(i >> 24)); 652 else if ((i & 0xffff) == 0) 653 sprintf(line, "%u.%u", C(i >> 24) , C(i >> 16)); 654 else if ((i & 0xff) == 0) 655 sprintf(line, "%u.%u.%u", C(i >> 24), C(i >> 16), C(i >> 8)); 656 else 657 sprintf(line, "%u.%u.%u.%u", C(i >> 24), 658 C(i >> 16), C(i >> 8), C(i)); 659 domask(line+strlen(line), i, omask); 660 return (line); 661 } 662 663 /* 664 * Print routing statistics 665 */ 666 void 667 rt_stats(off) 668 u_long off; 669 { 670 struct rtstat rtstat; 671 672 if (off == 0) { 673 printf("rtstat: symbol not in namelist\n"); 674 return; 675 } 676 kread(off, (char *)&rtstat, sizeof (rtstat)); 677 printf("routing:\n"); 678 printf("\t%u bad routing redirect%s\n", 679 rtstat.rts_badredirect, plural(rtstat.rts_badredirect)); 680 printf("\t%u dynamically created route%s\n", 681 rtstat.rts_dynamic, plural(rtstat.rts_dynamic)); 682 printf("\t%u new gateway%s due to redirects\n", 683 rtstat.rts_newgateway, plural(rtstat.rts_newgateway)); 684 printf("\t%u destination%s found unreachable\n", 685 rtstat.rts_unreach, plural(rtstat.rts_unreach)); 686 printf("\t%u use%s of a wildcard route\n", 687 rtstat.rts_wildcard, plural(rtstat.rts_wildcard)); 688 } 689 short ns_nullh[] = {0,0,0}; 690 short ns_bh[] = {-1,-1,-1}; 691 692 char * 693 ns_print(sa) 694 struct sockaddr *sa; 695 { 696 struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 697 struct ns_addr work; 698 union { union ns_net net_e; u_long long_e; } net; 699 u_short port; 700 static char mybuf[50], cport[10], chost[25]; 701 char *host = ""; 702 char *p; 703 u_char *q; 704 705 work = sns->sns_addr; 706 port = ntohs(work.x_port); 707 work.x_port = 0; 708 net.net_e = work.x_net; 709 if (ns_nullhost(work) && net.long_e == 0) { 710 if (port ) { 711 sprintf(mybuf, "*.%xH", port); 712 upHex(mybuf); 713 } else 714 sprintf(mybuf, "*.*"); 715 return (mybuf); 716 } 717 718 if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) { 719 host = "any"; 720 } else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 721 host = "*"; 722 } else { 723 q = work.x_host.c_host; 724 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 725 q[0], q[1], q[2], q[3], q[4], q[5]); 726 for (p = chost; *p == '0' && p < chost + 12; p++) 727 continue; 728 host = p; 729 } 730 if (port) 731 sprintf(cport, ".%xH", htons(port)); 732 else 733 *cport = 0; 734 735 sprintf(mybuf, "%xH.%s%s", (int)ntohl(net.long_e), host, cport); 736 upHex(mybuf); 737 return(mybuf); 738 } 739 740 char * 741 ns_phost(sa) 742 struct sockaddr *sa; 743 { 744 struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 745 struct sockaddr_ns work; 746 static union ns_net ns_zeronet; 747 char *p; 748 749 work = *sns; 750 work.sns_addr.x_port = 0; 751 work.sns_addr.x_net = ns_zeronet; 752 753 p = ns_print((struct sockaddr *)&work); 754 if (strncmp("0H.", p, 3) == 0) p += 3; 755 return(p); 756 } 757 758 void 759 upHex(p0) 760 char *p0; 761 { 762 char *p = p0; 763 for (; *p; p++) switch (*p) { 764 765 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': 766 *p += ('A' - 'a'); 767 } 768 } 769
Indexes created Tue Sep 23 14:10:03 GMT 2025