1/* 2 * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 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: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 * 21 * Internet, ethernet, port, and protocol string to address 22 * and address to string conversion routines 23 */ 24#ifndef lint 25static const char rcsid[] _U_ = 26 "@(#) $Header: /tcpdump/master/tcpdump/addrtoname.c,v 1.108.2.8 2006/02/27 07:27:16 hannes Exp $ (LBL)"; 27#endif 28 29#ifdef HAVE_CONFIG_H 30#include "config.h" 31#endif 32 33#include <tcpdump-stdinc.h> 34 35#ifdef USE_ETHER_NTOHOST 36#ifdef HAVE_NETINET_IF_ETHER_H 37struct mbuf; /* Squelch compiler warnings on some platforms for */ 38struct rtentry; /* declarations in <net/if.h> */ 39#include <net/if.h> /* for "struct ifnet" in "struct arpcom" on Solaris */ 40#include <netinet/if_ether.h> 41#endif /* HAVE_NETINET_IF_ETHER_H */ 42#ifdef NETINET_ETHER_H_DECLARES_ETHER_NTOHOST 43#include <netinet/ether.h> 44#endif /* NETINET_ETHER_H_DECLARES_ETHER_NTOHOST */ 45 46#if !defined(HAVE_DECL_ETHER_NTOHOST) || !HAVE_DECL_ETHER_NTOHOST 47#ifndef HAVE_STRUCT_ETHER_ADDR 48struct ether_addr { 49 unsigned char ether_addr_octet[6]; 50}; 51#endif 52extern int ether_ntohost(char *, const struct ether_addr *); 53#endif 54 55#endif /* USE_ETHER_NTOHOST */ 56 57#include <pcap.h> 58#include <pcap-namedb.h> 59#include <signal.h> 60#include <stdio.h> 61#include <string.h> 62#include <stdlib.h> 63 64#include "interface.h" 65#include "addrtoname.h" 66#include "llc.h" 67#include "setsignal.h" 68#include "extract.h" 69#include "oui.h" 70 71#ifndef ETHER_ADDR_LEN 72#include "ether.h" 73#endif 74 75/* 76 * hash tables for whatever-to-name translations 77 * 78 * XXX there has to be error checks against strdup(3) failure 79 */ 80 81#define HASHNAMESIZE 4096 82#define BUFSIZE 128 83 84struct hnamemem { 85 u_int32_t addr; 86 const char *name; 87 struct hnamemem *nxt; 88}; 89 90struct hnamemem hnametable[HASHNAMESIZE]; 91struct hnamemem tporttable[HASHNAMESIZE]; 92struct hnamemem uporttable[HASHNAMESIZE]; 93struct hnamemem eprototable[HASHNAMESIZE]; 94struct hnamemem dnaddrtable[HASHNAMESIZE]; 95struct hnamemem ipxsaptable[HASHNAMESIZE]; 96 97#if defined(INET6) && defined(WIN32) 98/* 99 * fake gethostbyaddr for Win2k/XP 100 * gethostbyaddr() returns incorrect value when AF_INET6 is passed 101 * to 3rd argument. 102 * 103 * h_name in struct hostent is only valid. 104 */ 105static struct hostent * 106win32_gethostbyaddr(const char *addr, int len, int type) 107{ 108 static struct hostent host; 109 static char hostbuf[NI_MAXHOST]; 110 char hname[NI_MAXHOST]; 111 struct sockaddr_in6 addr6; 112 113 host.h_name = hostbuf; 114 switch (type) { 115 case AF_INET: 116 return gethostbyaddr(addr, len, type); 117 break; 118 case AF_INET6: 119 memset(&addr6, 0, sizeof(addr6)); 120 addr6.sin6_family = AF_INET6; 121 memcpy(&addr6.sin6_addr, addr, len); 122 if (getnameinfo((struct sockaddr *)&addr6, sizeof(addr6), 123 hname, sizeof(hname), NULL, 0, 0)) { 124 return NULL; 125 } else { 126 strcpy(host.h_name, hname); 127 return &host; 128 } 129 break; 130 default: 131 return NULL; 132 } 133} 134#define gethostbyaddr win32_gethostbyaddr 135#endif /* INET6 & WIN32 */ 136 137#ifdef INET6 138struct h6namemem { 139 struct in6_addr addr; 140 char *name; 141 struct h6namemem *nxt; 142}; 143 144struct h6namemem h6nametable[HASHNAMESIZE]; 145#endif /* INET6 */ 146 147struct enamemem { 148 u_short e_addr0; 149 u_short e_addr1; 150 u_short e_addr2; 151 const char *e_name; 152 u_char *e_nsap; /* used only for nsaptable[] */ 153#define e_bs e_nsap /* for bytestringtable */ 154 struct enamemem *e_nxt; 155}; 156 157struct enamemem enametable[HASHNAMESIZE]; 158struct enamemem nsaptable[HASHNAMESIZE]; 159struct enamemem bytestringtable[HASHNAMESIZE]; 160 161struct protoidmem { 162 u_int32_t p_oui; 163 u_short p_proto; 164 const char *p_name; 165 struct protoidmem *p_nxt; 166}; 167 168struct protoidmem protoidtable[HASHNAMESIZE]; 169 170/* 171 * A faster replacement for inet_ntoa(). 172 */ 173const char * 174intoa(u_int32_t addr) 175{ 176 register char *cp; 177 register u_int byte; 178 register int n; 179 static char buf[sizeof(".xxx.xxx.xxx.xxx")]; 180 181 NTOHL(addr); 182 cp = buf + sizeof(buf); 183 *--cp = '\0'; 184 185 n = 4; 186 do { 187 byte = addr & 0xff; 188 *--cp = byte % 10 + '0'; 189 byte /= 10; 190 if (byte > 0) { 191 *--cp = byte % 10 + '0'; 192 byte /= 10; 193 if (byte > 0) 194 *--cp = byte + '0'; 195 } 196 *--cp = '.'; 197 addr >>= 8; 198 } while (--n > 0); 199 200 return cp + 1; 201} 202 203static u_int32_t f_netmask; 204static u_int32_t f_localnet; 205 206/* 207 * Return a name for the IP address pointed to by ap. This address 208 * is assumed to be in network byte order. 209 * 210 * NOTE: ap is *NOT* necessarily part of the packet data (not even if 211 * this is being called with the "ipaddr_string()" macro), so you 212 * *CANNOT* use the TCHECK{2}/TTEST{2} macros on it. Furthermore, 213 * even in cases where it *is* part of the packet data, the caller 214 * would still have to check for a null return value, even if it's 215 * just printing the return value with "%s" - not all versions of 216 * printf print "(null)" with "%s" and a null pointer, some of them 217 * don't check for a null pointer and crash in that case. 218 * 219 * The callers of this routine should, before handing this routine 220 * a pointer to packet data, be sure that the data is present in 221 * the packet buffer. They should probably do those checks anyway, 222 * as other data at that layer might not be IP addresses, and it 223 * also needs to check whether they're present in the packet buffer. 224 */ 225const char * 226getname(const u_char *ap) 227{ 228 register struct hostent *hp; 229 u_int32_t addr; 230 static struct hnamemem *p; /* static for longjmp() */ 231 232 memcpy(&addr, ap, sizeof(addr)); 233 p = &hnametable[addr & (HASHNAMESIZE-1)]; 234 for (; p->nxt; p = p->nxt) { 235 if (p->addr == addr) 236 return (p->name); 237 } 238 p->addr = addr; 239 p->nxt = newhnamemem(); 240 241 /* 242 * Print names unless: 243 * (1) -n was given. 244 * (2) Address is foreign and -f was given. (If -f was not 245 * given, f_netmask and f_localnet are 0 and the test 246 * evaluates to true) 247 */ 248 if (!nflag && 249 (addr & f_netmask) == f_localnet) { 250 hp = gethostbyaddr((char *)&addr, 4, AF_INET); 251 if (hp) { 252 char *dotp; 253 254 p->name = strdup(hp->h_name); 255 if (Nflag) { 256 /* Remove domain qualifications */ 257 dotp = strchr(p->name, '.'); 258 if (dotp) 259 *dotp = '\0'; 260 } 261 return (p->name); 262 } 263 } 264 p->name = strdup(intoa(addr)); 265 return (p->name); 266} 267 268#ifdef INET6 269/* 270 * Return a name for the IP6 address pointed to by ap. This address 271 * is assumed to be in network byte order. 272 */ 273const char * 274getname6(const u_char *ap) 275{ 276 register struct hostent *hp; 277 struct in6_addr addr; 278 static struct h6namemem *p; /* static for longjmp() */ 279 register const char *cp; 280 char ntop_buf[INET6_ADDRSTRLEN]; 281 282 memcpy(&addr, ap, sizeof(addr)); 283 p = &h6nametable[*(u_int16_t *)&addr.s6_addr[14] & (HASHNAMESIZE-1)]; 284 for (; p->nxt; p = p->nxt) { 285 if (memcmp(&p->addr, &addr, sizeof(addr)) == 0) 286 return (p->name); 287 } 288 p->addr = addr; 289 p->nxt = newh6namemem(); 290 291 /* 292 * Do not print names if -n was given. 293 */ 294 if (!nflag) { 295 hp = gethostbyaddr((char *)&addr, sizeof(addr), AF_INET6); 296 if (hp) { 297 char *dotp; 298 299 p->name = strdup(hp->h_name); 300 if (Nflag) { 301 /* Remove domain qualifications */ 302 dotp = strchr(p->name, '.'); 303 if (dotp) 304 *dotp = '\0'; 305 } 306 return (p->name); 307 } 308 } 309 cp = inet_ntop(AF_INET6, &addr, ntop_buf, sizeof(ntop_buf)); 310 p->name = strdup(cp); 311 return (p->name); 312} 313#endif /* INET6 */ 314 315static char hex[] = "0123456789abcdef"; 316 317 318/* Find the hash node that corresponds the ether address 'ep' */ 319 320static inline struct enamemem * 321lookup_emem(const u_char *ep) 322{ 323 register u_int i, j, k; 324 struct enamemem *tp; 325 326 k = (ep[0] << 8) | ep[1]; 327 j = (ep[2] << 8) | ep[3]; 328 i = (ep[4] << 8) | ep[5]; 329 330 tp = &enametable[(i ^ j) & (HASHNAMESIZE-1)]; 331 while (tp->e_nxt) 332 if (tp->e_addr0 == i && 333 tp->e_addr1 == j && 334 tp->e_addr2 == k) 335 return tp; 336 else 337 tp = tp->e_nxt; 338 tp->e_addr0 = i; 339 tp->e_addr1 = j; 340 tp->e_addr2 = k; 341 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 342 if (tp->e_nxt == NULL) 343 error("lookup_emem: calloc"); 344 345 return tp; 346} 347 348/* 349 * Find the hash node that corresponds to the bytestring 'bs' 350 * with length 'nlen' 351 */ 352 353static inline struct enamemem * 354lookup_bytestring(register const u_char *bs, const unsigned int nlen) 355{ 356 struct enamemem *tp; 357 register u_int i, j, k; 358 359 if (nlen >= 6) { 360 k = (bs[0] << 8) | bs[1]; 361 j = (bs[2] << 8) | bs[3]; 362 i = (bs[4] << 8) | bs[5]; 363 } else if (nlen >= 4) { 364 k = (bs[0] << 8) | bs[1]; 365 j = (bs[2] << 8) | bs[3]; 366 i = 0; 367 } else 368 i = j = k = 0; 369 370 tp = &bytestringtable[(i ^ j) & (HASHNAMESIZE-1)]; 371 while (tp->e_nxt) 372 if (tp->e_addr0 == i && 373 tp->e_addr1 == j && 374 tp->e_addr2 == k && 375 memcmp((const char *)bs, (const char *)(tp->e_bs), nlen) == 0) 376 return tp; 377 else 378 tp = tp->e_nxt; 379 380 tp->e_addr0 = i; 381 tp->e_addr1 = j; 382 tp->e_addr2 = k; 383 384 tp->e_bs = (u_char *) calloc(1, nlen + 1); 385 memcpy(tp->e_bs, bs, nlen); 386 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 387 if (tp->e_nxt == NULL) 388 error("lookup_bytestring: calloc"); 389 390 return tp; 391} 392 393/* Find the hash node that corresponds the NSAP 'nsap' */ 394 395static inline struct enamemem * 396lookup_nsap(register const u_char *nsap) 397{ 398 register u_int i, j, k; 399 unsigned int nlen = *nsap; 400 struct enamemem *tp; 401 const u_char *ensap = nsap + nlen - 6; 402 403 if (nlen > 6) { 404 k = (ensap[0] << 8) | ensap[1]; 405 j = (ensap[2] << 8) | ensap[3]; 406 i = (ensap[4] << 8) | ensap[5]; 407 } 408 else 409 i = j = k = 0; 410 411 tp = &nsaptable[(i ^ j) & (HASHNAMESIZE-1)]; 412 while (tp->e_nxt) 413 if (tp->e_addr0 == i && 414 tp->e_addr1 == j && 415 tp->e_addr2 == k && 416 tp->e_nsap[0] == nlen && 417 memcmp((const char *)&(nsap[1]), 418 (char *)&(tp->e_nsap[1]), nlen) == 0) 419 return tp; 420 else 421 tp = tp->e_nxt; 422 tp->e_addr0 = i; 423 tp->e_addr1 = j; 424 tp->e_addr2 = k; 425 tp->e_nsap = (u_char *)malloc(nlen + 1); 426 if (tp->e_nsap == NULL) 427 error("lookup_nsap: malloc"); 428 memcpy((char *)tp->e_nsap, (const char *)nsap, nlen + 1); 429 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 430 if (tp->e_nxt == NULL) 431 error("lookup_nsap: calloc"); 432 433 return tp; 434} 435 436/* Find the hash node that corresponds the protoid 'pi'. */ 437 438static inline struct protoidmem * 439lookup_protoid(const u_char *pi) 440{ 441 register u_int i, j; 442 struct protoidmem *tp; 443 444 /* 5 octets won't be aligned */ 445 i = (((pi[0] << 8) + pi[1]) << 8) + pi[2]; 446 j = (pi[3] << 8) + pi[4]; 447 /* XXX should be endian-insensitive, but do big-endian testing XXX */ 448 449 tp = &protoidtable[(i ^ j) & (HASHNAMESIZE-1)]; 450 while (tp->p_nxt) 451 if (tp->p_oui == i && tp->p_proto == j) 452 return tp; 453 else 454 tp = tp->p_nxt; 455 tp->p_oui = i; 456 tp->p_proto = j; 457 tp->p_nxt = (struct protoidmem *)calloc(1, sizeof(*tp)); 458 if (tp->p_nxt == NULL) 459 error("lookup_protoid: calloc"); 460 461 return tp; 462} 463 464const char * 465etheraddr_string(register const u_char *ep) 466{ 467 register int i; 468 register char *cp; 469 register struct enamemem *tp; 470 int oui; 471 char buf[BUFSIZE]; 472 473 tp = lookup_emem(ep); 474 if (tp->e_name) 475 return (tp->e_name); 476#ifdef USE_ETHER_NTOHOST 477 if (!nflag) { 478 char buf2[BUFSIZE]; 479 480 /* 481 * We don't cast it to "const struct ether_addr *" 482 * because some systems fail to declare the second 483 * argument as a "const" pointer, even though they 484 * don't modify what it points to. 485 */ 486 if (ether_ntohost(buf2, (struct ether_addr *)ep) == 0) { 487 tp->e_name = strdup(buf2); 488 return (tp->e_name); 489 } 490 } 491#endif 492 cp = buf; 493 oui = EXTRACT_24BITS(ep); 494 *cp++ = hex[*ep >> 4 ]; 495 *cp++ = hex[*ep++ & 0xf]; 496 for (i = 5; --i >= 0;) { 497 *cp++ = ':'; 498 *cp++ = hex[*ep >> 4 ]; 499 *cp++ = hex[*ep++ & 0xf]; 500 } 501 502 if (!nflag) { 503 snprintf(cp, BUFSIZE - (2 + 5*3), " (oui %s)", 504 tok2str(oui_values, "Unknown", oui)); 505 } else 506 *cp = '\0'; 507 tp->e_name = strdup(buf); 508 return (tp->e_name); 509} 510 511const char * 512linkaddr_string(const u_char *ep, const unsigned int len) 513{ 514 register u_int i; 515 register char *cp; 516 register struct enamemem *tp; 517 518 if (len == 6) /* XXX not totally correct... */ 519 return etheraddr_string(ep); 520 521 tp = lookup_bytestring(ep, len); 522 if (tp->e_name) 523 return (tp->e_name); 524 525 tp->e_name = cp = (char *)malloc(len*3); 526 if (tp->e_name == NULL) 527 error("linkaddr_string: malloc"); 528 *cp++ = hex[*ep >> 4]; 529 *cp++ = hex[*ep++ & 0xf]; 530 for (i = len-1; i > 0 ; --i) { 531 *cp++ = ':'; 532 *cp++ = hex[*ep >> 4]; 533 *cp++ = hex[*ep++ & 0xf]; 534 } 535 *cp = '\0'; 536 return (tp->e_name); 537} 538 539const char * 540etherproto_string(u_short port) 541{ 542 register char *cp; 543 register struct hnamemem *tp; 544 register u_int32_t i = port; 545 char buf[sizeof("0000")]; 546 547 for (tp = &eprototable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 548 if (tp->addr == i) 549 return (tp->name); 550 551 tp->addr = i; 552 tp->nxt = newhnamemem(); 553 554 cp = buf; 555 NTOHS(port); 556 *cp++ = hex[port >> 12 & 0xf]; 557 *cp++ = hex[port >> 8 & 0xf]; 558 *cp++ = hex[port >> 4 & 0xf]; 559 *cp++ = hex[port & 0xf]; 560 *cp++ = '\0'; 561 tp->name = strdup(buf); 562 return (tp->name); 563} 564 565const char * 566protoid_string(register const u_char *pi) 567{ 568 register u_int i, j; 569 register char *cp; 570 register struct protoidmem *tp; 571 char buf[sizeof("00:00:00:00:00")]; 572 573 tp = lookup_protoid(pi); 574 if (tp->p_name) 575 return tp->p_name; 576 577 cp = buf; 578 if ((j = *pi >> 4) != 0) 579 *cp++ = hex[j]; 580 *cp++ = hex[*pi++ & 0xf]; 581 for (i = 4; (int)--i >= 0;) { 582 *cp++ = ':'; 583 if ((j = *pi >> 4) != 0) 584 *cp++ = hex[j]; 585 *cp++ = hex[*pi++ & 0xf]; 586 } 587 *cp = '\0'; 588 tp->p_name = strdup(buf); 589 return (tp->p_name); 590} 591 592#define ISONSAP_MAX_LENGTH 20 593const char * 594isonsap_string(const u_char *nsap, register u_int nsap_length) 595{ 596 register u_int nsap_idx; 597 register char *cp; 598 register struct enamemem *tp; 599 600 if (nsap_length < 1 || nsap_length > ISONSAP_MAX_LENGTH) 601 return ("isonsap_string: illegal length"); 602 603 tp = lookup_nsap(nsap); 604 if (tp->e_name) 605 return tp->e_name; 606 607 tp->e_name = cp = (char *)malloc(sizeof("xx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xx")); 608 if (cp == NULL) 609 error("isonsap_string: malloc"); 610 611 for (nsap_idx = 0; nsap_idx < nsap_length; nsap_idx++) { 612 *cp++ = hex[*nsap >> 4]; 613 *cp++ = hex[*nsap++ & 0xf]; 614 if (((nsap_idx & 1) == 0) && 615 (nsap_idx + 1 < nsap_length)) { 616 *cp++ = '.'; 617 } 618 } 619 *cp = '\0'; 620 return (tp->e_name); 621} 622 623const char * 624tcpport_string(u_short port) 625{ 626 register struct hnamemem *tp; 627 register u_int32_t i = port; 628 char buf[sizeof("00000")]; 629 630 for (tp = &tporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 631 if (tp->addr == i) 632 return (tp->name); 633 634 tp->addr = i; 635 tp->nxt = newhnamemem(); 636 637 (void)snprintf(buf, sizeof(buf), "%u", i); 638 tp->name = strdup(buf); 639 return (tp->name); 640} 641 642const char * 643udpport_string(register u_short port) 644{ 645 register struct hnamemem *tp; 646 register u_int32_t i = port; 647 char buf[sizeof("00000")]; 648 649 for (tp = &uporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 650 if (tp->addr == i) 651 return (tp->name); 652 653 tp->addr = i; 654 tp->nxt = newhnamemem(); 655 656 (void)snprintf(buf, sizeof(buf), "%u", i); 657 tp->name = strdup(buf); 658 return (tp->name); 659} 660 661const char * 662ipxsap_string(u_short port) 663{ 664 register char *cp; 665 register struct hnamemem *tp; 666 register u_int32_t i = port; 667 char buf[sizeof("0000")]; 668 669 for (tp = &ipxsaptable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 670 if (tp->addr == i) 671 return (tp->name); 672 673 tp->addr = i; 674 tp->nxt = newhnamemem(); 675 676 cp = buf; 677 NTOHS(port); 678 *cp++ = hex[port >> 12 & 0xf]; 679 *cp++ = hex[port >> 8 & 0xf]; 680 *cp++ = hex[port >> 4 & 0xf]; 681 *cp++ = hex[port & 0xf]; 682 *cp++ = '\0'; 683 tp->name = strdup(buf); 684 return (tp->name); 685} 686 687static void 688init_servarray(void) 689{ 690 struct servent *sv; 691 register struct hnamemem *table; 692 register int i; 693 char buf[sizeof("0000000000")]; 694 695 while ((sv = getservent()) != NULL) { 696 int port = ntohs(sv->s_port); 697 i = port & (HASHNAMESIZE-1); 698 if (strcmp(sv->s_proto, "tcp") == 0) 699 table = &tporttable[i]; 700 else if (strcmp(sv->s_proto, "udp") == 0) 701 table = &uporttable[i]; 702 else 703 continue; 704 705 while (table->name) 706 table = table->nxt; 707 if (nflag) { 708 (void)snprintf(buf, sizeof(buf), "%d", port); 709 table->name = strdup(buf); 710 } else 711 table->name = strdup(sv->s_name); 712 table->addr = port; 713 table->nxt = newhnamemem(); 714 } 715 endservent(); 716} 717 718/* in libpcap.a (nametoaddr.c) */ 719#if defined(WIN32) && !defined(USE_STATIC_LIBPCAP) 720__declspec(dllimport) 721#else 722extern 723#endif 724const struct eproto { 725 const char *s; 726 u_short p; 727} eproto_db[]; 728 729static void 730init_eprotoarray(void) 731{ 732 register int i; 733 register struct hnamemem *table; 734 735 for (i = 0; eproto_db[i].s; i++) { 736 int j = htons(eproto_db[i].p) & (HASHNAMESIZE-1); 737 table = &eprototable[j]; 738 while (table->name) 739 table = table->nxt; 740 table->name = eproto_db[i].s; 741 table->addr = htons(eproto_db[i].p); 742 table->nxt = newhnamemem(); 743 } 744} 745 746static struct protoidlist { 747 const u_char protoid[5]; 748 const char *name; 749} protoidlist[] = { 750 {{ 0x00, 0x00, 0x0c, 0x01, 0x07 }, "CiscoMLS" }, 751 {{ 0x00, 0x00, 0x0c, 0x20, 0x00 }, "CiscoCDP" }, 752 {{ 0x00, 0x00, 0x0c, 0x20, 0x01 }, "CiscoCGMP" }, 753 {{ 0x00, 0x00, 0x0c, 0x20, 0x03 }, "CiscoVTP" }, 754 {{ 0x00, 0xe0, 0x2b, 0x00, 0xbb }, "ExtremeEDP" }, 755 {{ 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } 756}; 757 758/* 759 * SNAP proto IDs with org code 0:0:0 are actually encapsulated Ethernet 760 * types. 761 */ 762static void 763init_protoidarray(void) 764{ 765 register int i; 766 register struct protoidmem *tp; 767 struct protoidlist *pl; 768 u_char protoid[5]; 769 770 protoid[0] = 0; 771 protoid[1] = 0; 772 protoid[2] = 0; 773 for (i = 0; eproto_db[i].s; i++) { 774 u_short etype = htons(eproto_db[i].p); 775 776 memcpy((char *)&protoid[3], (char *)&etype, 2); 777 tp = lookup_protoid(protoid); 778 tp->p_name = strdup(eproto_db[i].s); 779 } 780 /* Hardwire some SNAP proto ID names */ 781 for (pl = protoidlist; pl->name != NULL; ++pl) { 782 tp = lookup_protoid(pl->protoid); 783 /* Don't override existing name */ 784 if (tp->p_name != NULL) 785 continue; 786 787 tp->p_name = pl->name; 788 } 789} 790 791static struct etherlist { 792 const u_char addr[6]; 793 const char *name; 794} etherlist[] = { 795 {{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, "Broadcast" }, 796 {{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } 797}; 798 799/* 800 * Initialize the ethers hash table. We take two different approaches 801 * depending on whether or not the system provides the ethers name 802 * service. If it does, we just wire in a few names at startup, 803 * and etheraddr_string() fills in the table on demand. If it doesn't, 804 * then we suck in the entire /etc/ethers file at startup. The idea 805 * is that parsing the local file will be fast, but spinning through 806 * all the ethers entries via NIS & next_etherent might be very slow. 807 * 808 * XXX pcap_next_etherent doesn't belong in the pcap interface, but 809 * since the pcap module already does name-to-address translation, 810 * it's already does most of the work for the ethernet address-to-name 811 * translation, so we just pcap_next_etherent as a convenience. 812 */ 813static void 814init_etherarray(void) 815{ 816 register struct etherlist *el; 817 register struct enamemem *tp; 818#ifdef USE_ETHER_NTOHOST 819 char name[256]; 820#else 821 register struct pcap_etherent *ep; 822 register FILE *fp; 823 824 /* Suck in entire ethers file */ 825 fp = fopen(PCAP_ETHERS_FILE, "r"); 826 if (fp != NULL) { 827 while ((ep = pcap_next_etherent(fp)) != NULL) { 828 tp = lookup_emem(ep->addr); 829 tp->e_name = strdup(ep->name); 830 } 831 (void)fclose(fp); 832 } 833#endif 834 835 /* Hardwire some ethernet names */ 836 for (el = etherlist; el->name != NULL; ++el) { 837 tp = lookup_emem(el->addr); 838 /* Don't override existing name */ 839 if (tp->e_name != NULL) 840 continue; 841 842#ifdef USE_ETHER_NTOHOST 843 /* 844 * Use YP/NIS version of name if available. 845 * 846 * We don't cast it to "const struct ether_addr *" 847 * because some systems don't modify the Ethernet 848 * address but fail to declare the second argument 849 * as a "const" pointer. 850 */ 851 if (ether_ntohost(name, (struct ether_addr *)el->addr) == 0) { 852 tp->e_name = strdup(name); 853 continue; 854 } 855#endif 856 tp->e_name = el->name; 857 } 858} 859 860static struct tok ipxsap_db[] = { 861 { 0x0000, "Unknown" }, 862 { 0x0001, "User" }, 863 { 0x0002, "User Group" }, 864 { 0x0003, "PrintQueue" }, 865 { 0x0004, "FileServer" }, 866 { 0x0005, "JobServer" }, 867 { 0x0006, "Gateway" }, 868 { 0x0007, "PrintServer" }, 869 { 0x0008, "ArchiveQueue" }, 870 { 0x0009, "ArchiveServer" }, 871 { 0x000a, "JobQueue" }, 872 { 0x000b, "Administration" }, 873 { 0x000F, "Novell TI-RPC" }, 874 { 0x0017, "Diagnostics" }, 875 { 0x0020, "NetBIOS" }, 876 { 0x0021, "NAS SNA Gateway" }, 877 { 0x0023, "NACS AsyncGateway" }, 878 { 0x0024, "RemoteBridge/RoutingService" }, 879 { 0x0026, "BridgeServer" }, 880 { 0x0027, "TCP/IP Gateway" }, 881 { 0x0028, "Point-to-point X.25 BridgeServer" }, 882 { 0x0029, "3270 Gateway" }, 883 { 0x002a, "CHI Corp" }, 884 { 0x002c, "PC Chalkboard" }, 885 { 0x002d, "TimeSynchServer" }, 886 { 0x002e, "ARCserve5.0/PalindromeBackup" }, 887 { 0x0045, "DI3270 Gateway" }, 888 { 0x0047, "AdvertisingPrintServer" }, 889 { 0x004a, "NetBlazerModems" }, 890 { 0x004b, "BtrieveVAP" }, 891 { 0x004c, "NetwareSQL" }, 892 { 0x004d, "XtreeNetwork" }, 893 { 0x0050, "BtrieveVAP4.11" }, 894 { 0x0052, "QuickLink" }, 895 { 0x0053, "PrintQueueUser" }, 896 { 0x0058, "Multipoint X.25 Router" }, 897 { 0x0060, "STLB/NLM" }, 898 { 0x0064, "ARCserve" }, 899 { 0x0066, "ARCserve3.0" }, 900 { 0x0072, "WAN CopyUtility" }, 901 { 0x007a, "TES-NetwareVMS" }, 902 { 0x0092, "WATCOM Debugger/EmeraldTapeBackupServer" }, 903 { 0x0095, "DDA OBGYN" }, 904 { 0x0098, "NetwareAccessServer" }, 905 { 0x009a, "Netware for VMS II/NamedPipeServer" }, 906 { 0x009b, "NetwareAccessServer" }, 907 { 0x009e, "PortableNetwareServer/SunLinkNVT" }, 908 { 0x00a1, "PowerchuteAPC UPS" }, 909 { 0x00aa, "LAWserve" }, 910 { 0x00ac, "CompaqIDA StatusMonitor" }, 911 { 0x0100, "PIPE STAIL" }, 912 { 0x0102, "LAN ProtectBindery" }, 913 { 0x0103, "OracleDataBaseServer" }, 914 { 0x0107, "Netware386/RSPX RemoteConsole" }, 915 { 0x010f, "NovellSNA Gateway" }, 916 { 0x0111, "TestServer" }, 917 { 0x0112, "HP PrintServer" }, 918 { 0x0114, "CSA MUX" }, 919 { 0x0115, "CSA LCA" }, 920 { 0x0116, "CSA CM" }, 921 { 0x0117, "CSA SMA" }, 922 { 0x0118, "CSA DBA" }, 923 { 0x0119, "CSA NMA" }, 924 { 0x011a, "CSA SSA" }, 925 { 0x011b, "CSA STATUS" }, 926 { 0x011e, "CSA APPC" }, 927 { 0x0126, "SNA TEST SSA Profile" }, 928 { 0x012a, "CSA TRACE" }, 929 { 0x012b, "NetwareSAA" }, 930 { 0x012e, "IKARUS VirusScan" }, 931 { 0x0130, "CommunicationsExecutive" }, 932 { 0x0133, "NNS DomainServer/NetwareNamingServicesDomain" }, 933 { 0x0135, "NetwareNamingServicesProfile" }, 934 { 0x0137, "Netware386 PrintQueue/NNS PrintQueue" }, 935 { 0x0141, "LAN SpoolServer" }, 936 { 0x0152, "IRMALAN Gateway" }, 937 { 0x0154, "NamedPipeServer" }, 938 { 0x0166, "NetWareManagement" }, 939 { 0x0168, "Intel PICKIT CommServer/Intel CAS TalkServer" }, 940 { 0x0173, "Compaq" }, 941 { 0x0174, "Compaq SNMP Agent" }, 942 { 0x0175, "Compaq" }, 943 { 0x0180, "XTreeServer/XTreeTools" }, 944 { 0x018A, "NASI ServicesBroadcastServer" }, 945 { 0x01b0, "GARP Gateway" }, 946 { 0x01b1, "Binfview" }, 947 { 0x01bf, "IntelLanDeskManager" }, 948 { 0x01ca, "AXTEC" }, 949 { 0x01cb, "ShivaNetModem/E" }, 950 { 0x01cc, "ShivaLanRover/E" }, 951 { 0x01cd, "ShivaLanRover/T" }, 952 { 0x01ce, "ShivaUniversal" }, 953 { 0x01d8, "CastelleFAXPressServer" }, 954 { 0x01da, "CastelleLANPressPrintServer" }, 955 { 0x01dc, "CastelleFAX/Xerox7033 FaxServer/ExcelLanFax" }, 956 { 0x01f0, "LEGATO" }, 957 { 0x01f5, "LEGATO" }, 958 { 0x0233, "NMS Agent/NetwareManagementAgent" }, 959 { 0x0237, "NMS IPX Discovery/LANternReadWriteChannel" }, 960 { 0x0238, "NMS IP Discovery/LANternTrapAlarmChannel" }, 961 { 0x023a, "LANtern" }, 962 { 0x023c, "MAVERICK" }, 963 { 0x023f, "NovellSMDR" }, 964 { 0x024e, "NetwareConnect" }, 965 { 0x024f, "NASI ServerBroadcast Cisco" }, 966 { 0x026a, "NMS ServiceConsole" }, 967 { 0x026b, "TimeSynchronizationServer Netware 4.x" }, 968 { 0x0278, "DirectoryServer Netware 4.x" }, 969 { 0x027b, "NetwareManagementAgent" }, 970 { 0x0280, "Novell File and Printer Sharing Service for PC" }, 971 { 0x0304, "NovellSAA Gateway" }, 972 { 0x0308, "COM/VERMED" }, 973 { 0x030a, "GalacticommWorldgroupServer" }, 974 { 0x030c, "IntelNetport2/HP JetDirect/HP Quicksilver" }, 975 { 0x0320, "AttachmateGateway" }, 976 { 0x0327, "MicrosoftDiagnostiocs" }, 977 { 0x0328, "WATCOM SQL Server" }, 978 { 0x0335, "MultiTechSystems MultisynchCommServer" }, 979 { 0x0343, "Xylogics RemoteAccessServer/LANModem" }, 980 { 0x0355, "ArcadaBackupExec" }, 981 { 0x0358, "MSLCD1" }, 982 { 0x0361, "NETINELO" }, 983 { 0x037e, "Powerchute UPS Monitoring" }, 984 { 0x037f, "ViruSafeNotify" }, 985 { 0x0386, "HP Bridge" }, 986 { 0x0387, "HP Hub" }, 987 { 0x0394, "NetWare SAA Gateway" }, 988 { 0x039b, "LotusNotes" }, 989 { 0x03b7, "CertusAntiVirus" }, 990 { 0x03c4, "ARCserve4.0" }, 991 { 0x03c7, "LANspool3.5" }, 992 { 0x03d7, "LexmarkPrinterServer" }, 993 { 0x03d8, "LexmarkXLE PrinterServer" }, 994 { 0x03dd, "BanyanENS NetwareClient" }, 995 { 0x03de, "GuptaSequelBaseServer/NetWareSQL" }, 996 { 0x03e1, "UnivelUnixware" }, 997 { 0x03e4, "UnivelUnixware" }, 998 { 0x03fc, "IntelNetport" }, 999 { 0x03fd, "PrintServerQueue" }, 1000 { 0x040A, "ipnServer" }, 1001 { 0x040D, "LVERRMAN" }, 1002 { 0x040E, "LVLIC" }, 1003 { 0x0414, "NET Silicon (DPI)/Kyocera" }, 1004 { 0x0429, "SiteLockVirus" }, 1005 { 0x0432, "UFHELPR???" }, 1006 { 0x0433, "Synoptics281xAdvancedSNMPAgent" }, 1007 { 0x0444, "MicrosoftNT SNA Server" }, 1008 { 0x0448, "Oracle" }, 1009 { 0x044c, "ARCserve5.01" }, 1010 { 0x0457, "CanonGP55" }, 1011 { 0x045a, "QMS Printers" }, 1012 { 0x045b, "DellSCSI Array" }, 1013 { 0x0491, "NetBlazerModems" }, 1014 { 0x04ac, "OnTimeScheduler" }, 1015 { 0x04b0, "CD-Net" }, 1016 { 0x0513, "EmulexNQA" }, 1017 { 0x0520, "SiteLockChecks" }, 1018 { 0x0529, "SiteLockChecks" }, 1019 { 0x052d, "CitrixOS2 AppServer" }, 1020 { 0x0535, "Tektronix" }, 1021 { 0x0536, "Milan" }, 1022 { 0x055d, "Attachmate SNA gateway" }, 1023 { 0x056b, "IBM8235 ModemServer" }, 1024 { 0x056c, "ShivaLanRover/E PLUS" }, 1025 { 0x056d, "ShivaLanRover/T PLUS" }, 1026 { 0x0580, "McAfeeNetShield" }, 1027 { 0x05B8, "NLM to workstation communication (Revelation Software)" }, 1028 { 0x05BA, "CompatibleSystemsRouters" }, 1029 { 0x05BE, "CheyenneHierarchicalStorageManager" }, 1030 { 0x0606, "JCWatermarkImaging" }, 1031 { 0x060c, "AXISNetworkPrinter" }, 1032 { 0x0610, "AdaptecSCSIManagement" }, 1033 { 0x0621, "IBM AntiVirus" }, 1034 { 0x0640, "Windows95 RemoteRegistryService" }, 1035 { 0x064e, "MicrosoftIIS" }, 1036 { 0x067b, "Microsoft Win95/98 File and Print Sharing for NetWare" }, 1037 { 0x067c, "Microsoft Win95/98 File and Print Sharing for NetWare" }, 1038 { 0x076C, "Xerox" }, 1039 { 0x079b, "ShivaLanRover/E 115" }, 1040 { 0x079c, "ShivaLanRover/T 115" }, 1041 { 0x07B4, "CubixWorldDesk" }, 1042 { 0x07c2, "Quarterdeck IWare Connect V2.x NLM" }, 1043 { 0x07c1, "Quarterdeck IWare Connect V3.x NLM" }, 1044 { 0x0810, "ELAN License Server Demo" }, 1045 { 0x0824, "ShivaLanRoverAccessSwitch/E" }, 1046 { 0x086a, "ISSC Collector" }, 1047 { 0x087f, "ISSC DAS AgentAIX" }, 1048 { 0x0880, "Intel Netport PRO" }, 1049 { 0x0881, "Intel Netport PRO" }, 1050 { 0x0b29, "SiteLock" }, 1051 { 0x0c29, "SiteLockApplications" }, 1052 { 0x0c2c, "LicensingServer" }, 1053 { 0x2101, "PerformanceTechnologyInstantInternet" }, 1054 { 0x2380, "LAI SiteLock" }, 1055 { 0x238c, "MeetingMaker" }, 1056 { 0x4808, "SiteLockServer/SiteLockMetering" }, 1057 { 0x5555, "SiteLockUser" }, 1058 { 0x6312, "Tapeware" }, 1059 { 0x6f00, "RabbitGateway" }, 1060 { 0x7703, "MODEM" }, 1061 { 0x8002, "NetPortPrinters" }, 1062 { 0x8008, "WordPerfectNetworkVersion" }, 1063 { 0x85BE, "Cisco EIGRP" }, 1064 { 0x8888, "WordPerfectNetworkVersion/QuickNetworkManagement" }, 1065 { 0x9000, "McAfeeNetShield" }, 1066 { 0x9604, "CSA-NT_MON" }, 1067 { 0xb6a8, "OceanIsleReachoutRemoteControl" }, 1068 { 0xf11f, "SiteLockMetering" }, 1069 { 0xf1ff, "SiteLock" }, 1070 { 0xf503, "Microsoft SQL Server" }, 1071 { 0xF905, "IBM TimeAndPlace" }, 1072 { 0xfbfb, "TopCallIII FaxServer" }, 1073 { 0xffff, "AnyService/Wildcard" }, 1074 { 0, (char *)0 } 1075}; 1076 1077static void 1078init_ipxsaparray(void) 1079{ 1080 register int i; 1081 register struct hnamemem *table; 1082 1083 for (i = 0; ipxsap_db[i].s != NULL; i++) { 1084 int j = htons(ipxsap_db[i].v) & (HASHNAMESIZE-1); 1085 table = &ipxsaptable[j]; 1086 while (table->name) 1087 table = table->nxt; 1088 table->name = ipxsap_db[i].s; 1089 table->addr = htons(ipxsap_db[i].v); 1090 table->nxt = newhnamemem(); 1091 } 1092} 1093 1094/* 1095 * Initialize the address to name translation machinery. We map all 1096 * non-local IP addresses to numeric addresses if fflag is true (i.e., 1097 * to prevent blocking on the nameserver). localnet is the IP address 1098 * of the local network. mask is its subnet mask. 1099 */ 1100void 1101init_addrtoname(u_int32_t localnet, u_int32_t mask) 1102{ 1103 if (fflag) { 1104 f_localnet = localnet; 1105 f_netmask = mask; 1106 } 1107 if (nflag) 1108 /* 1109 * Simplest way to suppress names. 1110 */ 1111 return; 1112 1113 init_etherarray(); 1114 init_servarray(); 1115 init_eprotoarray(); 1116 init_protoidarray(); 1117 init_ipxsaparray(); 1118} 1119 1120const char * 1121dnaddr_string(u_short dnaddr) 1122{ 1123 register struct hnamemem *tp; 1124 1125 for (tp = &dnaddrtable[dnaddr & (HASHNAMESIZE-1)]; tp->nxt != 0; 1126 tp = tp->nxt) 1127 if (tp->addr == dnaddr) 1128 return (tp->name); 1129 1130 tp->addr = dnaddr; 1131 tp->nxt = newhnamemem(); 1132 if (nflag) 1133 tp->name = dnnum_string(dnaddr); 1134 else 1135 tp->name = dnname_string(dnaddr); 1136 1137 return(tp->name); 1138} 1139 1140/* Return a zero'ed hnamemem struct and cuts down on calloc() overhead */ 1141struct hnamemem * 1142newhnamemem(void) 1143{ 1144 register struct hnamemem *p; 1145 static struct hnamemem *ptr = NULL; 1146 static u_int num = 0; 1147 1148 if (num <= 0) { 1149 num = 64; 1150 ptr = (struct hnamemem *)calloc(num, sizeof (*ptr)); 1151 if (ptr == NULL) 1152 error("newhnamemem: calloc"); 1153 } 1154 --num; 1155 p = ptr++; 1156 return (p); 1157} 1158 1159#ifdef INET6 1160/* Return a zero'ed h6namemem struct and cuts down on calloc() overhead */ 1161struct h6namemem * 1162newh6namemem(void) 1163{ 1164 register struct h6namemem *p; 1165 static struct h6namemem *ptr = NULL; 1166 static u_int num = 0; 1167 1168 if (num <= 0) { 1169 num = 64; 1170 ptr = (struct h6namemem *)calloc(num, sizeof (*ptr)); 1171 if (ptr == NULL) 1172 error("newh6namemem: calloc"); 1173 } 1174 --num; 1175 p = ptr++; 1176 return (p); 1177} 1178#endif /* INET6 */ 1179