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 25 static const char rcsid[] _U_ = 26 "@(#) $Header: /tcpdump/master/tcpdump/addrtoname.c,v 1.119 2007-08-08 14:06:34 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 37 struct mbuf; /* Squelch compiler warnings on some platforms for */ 38 struct 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 48 struct ether_addr { 49 unsigned char ether_addr_octet[6]; 50 }; 51 #endif 52 extern 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 #define ETHER_ADDR_LEN 6 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 83 struct hnamemem { 84 u_int32_t addr; 85 const char *name; 86 struct hnamemem *nxt; 87 }; 88 89 struct hnamemem hnametable[HASHNAMESIZE]; 90 struct hnamemem tporttable[HASHNAMESIZE]; 91 struct hnamemem uporttable[HASHNAMESIZE]; 92 struct hnamemem eprototable[HASHNAMESIZE]; 93 struct hnamemem dnaddrtable[HASHNAMESIZE]; 94 struct hnamemem ipxsaptable[HASHNAMESIZE]; 95 96 #if defined(INET6) && defined(WIN32) 97 /* 98 * fake gethostbyaddr for Win2k/XP 99 * gethostbyaddr() returns incorrect value when AF_INET6 is passed 100 * to 3rd argument. 101 * 102 * h_name in struct hostent is only valid. 103 */ 104 static struct hostent * 105 win32_gethostbyaddr(const char *addr, int len, int type) 106 { 107 static struct hostent host; 108 static char hostbuf[NI_MAXHOST]; 109 char hname[NI_MAXHOST]; 110 struct sockaddr_in6 addr6; 111 112 host.h_name = hostbuf; 113 switch (type) { 114 case AF_INET: 115 return gethostbyaddr(addr, len, type); 116 break; 117 case AF_INET6: 118 memset(&addr6, 0, sizeof(addr6)); 119 addr6.sin6_family = AF_INET6; 120 memcpy(&addr6.sin6_addr, addr, len); 121 if (getnameinfo((struct sockaddr *)&addr6, sizeof(addr6), 122 hname, sizeof(hname), NULL, 0, 0)) { 123 return NULL; 124 } else { 125 strcpy(host.h_name, hname); 126 return &host; 127 } 128 break; 129 default: 130 return NULL; 131 } 132 } 133 #define gethostbyaddr win32_gethostbyaddr 134 #endif /* INET6 & WIN32 */ 135 136 #ifdef INET6 137 struct h6namemem { 138 struct in6_addr addr; 139 char *name; 140 struct h6namemem *nxt; 141 }; 142 143 struct h6namemem h6nametable[HASHNAMESIZE]; 144 #endif /* INET6 */ 145 146 struct enamemem { 147 u_short e_addr0; 148 u_short e_addr1; 149 u_short e_addr2; 150 const char *e_name; 151 u_char *e_nsap; /* used only for nsaptable[] */ 152 #define e_bs e_nsap /* for bytestringtable */ 153 struct enamemem *e_nxt; 154 }; 155 156 struct enamemem enametable[HASHNAMESIZE]; 157 struct enamemem nsaptable[HASHNAMESIZE]; 158 struct enamemem bytestringtable[HASHNAMESIZE]; 159 160 struct protoidmem { 161 u_int32_t p_oui; 162 u_short p_proto; 163 const char *p_name; 164 struct protoidmem *p_nxt; 165 }; 166 167 struct protoidmem protoidtable[HASHNAMESIZE]; 168 169 /* 170 * A faster replacement for inet_ntoa(). 171 */ 172 const char * 173 intoa(u_int32_t addr) 174 { 175 register char *cp; 176 register u_int byte; 177 register int n; 178 static char buf[sizeof(".xxx.xxx.xxx.xxx")]; 179 180 NTOHL(addr); 181 cp = buf + sizeof(buf); 182 *--cp = '\0'; 183 184 n = 4; 185 do { 186 byte = addr & 0xff; 187 *--cp = byte % 10 + '0'; 188 byte /= 10; 189 if (byte > 0) { 190 *--cp = byte % 10 + '0'; 191 byte /= 10; 192 if (byte > 0) 193 *--cp = byte + '0'; 194 } 195 *--cp = '.'; 196 addr >>= 8; 197 } while (--n > 0); 198 199 return cp + 1; 200 } 201 202 static u_int32_t f_netmask; 203 static u_int32_t f_localnet; 204 205 /* 206 * Return a name for the IP address pointed to by ap. This address 207 * is assumed to be in network byte order. 208 * 209 * NOTE: ap is *NOT* necessarily part of the packet data (not even if 210 * this is being called with the "ipaddr_string()" macro), so you 211 * *CANNOT* use the TCHECK{2}/TTEST{2} macros on it. Furthermore, 212 * even in cases where it *is* part of the packet data, the caller 213 * would still have to check for a null return value, even if it's 214 * just printing the return value with "%s" - not all versions of 215 * printf print "(null)" with "%s" and a null pointer, some of them 216 * don't check for a null pointer and crash in that case. 217 * 218 * The callers of this routine should, before handing this routine 219 * a pointer to packet data, be sure that the data is present in 220 * the packet buffer. They should probably do those checks anyway, 221 * as other data at that layer might not be IP addresses, and it 222 * also needs to check whether they're present in the packet buffer. 223 */ 224 const char * 225 getname(const u_char *ap) 226 { 227 register struct hostent *hp; 228 u_int32_t addr; 229 static struct hnamemem *p; /* static for longjmp() */ 230 231 memcpy(&addr, ap, sizeof(addr)); 232 p = &hnametable[addr & (HASHNAMESIZE-1)]; 233 for (; p->nxt; p = p->nxt) { 234 if (p->addr == addr) 235 return (p->name); 236 } 237 p->addr = addr; 238 p->nxt = newhnamemem(); 239 240 /* 241 * Print names unless: 242 * (1) -n was given. 243 * (2) Address is foreign and -f was given. (If -f was not 244 * given, f_netmask and f_localnet are 0 and the test 245 * evaluates to true) 246 */ 247 if (!nflag && 248 (addr & f_netmask) == f_localnet) { 249 hp = gethostbyaddr((char *)&addr, 4, AF_INET); 250 if (hp) { 251 char *dotp; 252 253 p->name = strdup(hp->h_name); 254 if (Nflag) { 255 /* Remove domain qualifications */ 256 dotp = strchr(p->name, '.'); 257 if (dotp) 258 *dotp = '\0'; 259 } 260 return (p->name); 261 } 262 } 263 p->name = strdup(intoa(addr)); 264 return (p->name); 265 } 266 267 #ifdef INET6 268 /* 269 * Return a name for the IP6 address pointed to by ap. This address 270 * is assumed to be in network byte order. 271 */ 272 const char * 273 getname6(const u_char *ap) 274 { 275 register struct hostent *hp; 276 struct in6_addr addr; 277 static struct h6namemem *p; /* static for longjmp() */ 278 register const char *cp; 279 char ntop_buf[INET6_ADDRSTRLEN]; 280 281 memcpy(&addr, ap, sizeof(addr)); 282 p = &h6nametable[*(u_int16_t *)&addr.s6_addr[14] & (HASHNAMESIZE-1)]; 283 for (; p->nxt; p = p->nxt) { 284 if (memcmp(&p->addr, &addr, sizeof(addr)) == 0) 285 return (p->name); 286 } 287 p->addr = addr; 288 p->nxt = newh6namemem(); 289 290 /* 291 * Do not print names if -n was given. 292 */ 293 if (!nflag) { 294 hp = gethostbyaddr((char *)&addr, sizeof(addr), AF_INET6); 295 if (hp) { 296 char *dotp; 297 298 p->name = strdup(hp->h_name); 299 if (Nflag) { 300 /* Remove domain qualifications */ 301 dotp = strchr(p->name, '.'); 302 if (dotp) 303 *dotp = '\0'; 304 } 305 return (p->name); 306 } 307 } 308 cp = inet_ntop(AF_INET6, &addr, ntop_buf, sizeof(ntop_buf)); 309 p->name = strdup(cp); 310 return (p->name); 311 } 312 #endif /* INET6 */ 313 314 static char hex[] = "0123456789abcdef"; 315 316 317 /* Find the hash node that corresponds the ether address 'ep' */ 318 319 static inline struct enamemem * 320 lookup_emem(const u_char *ep) 321 { 322 register u_int i, j, k; 323 struct enamemem *tp; 324 325 k = (ep[0] << 8) | ep[1]; 326 j = (ep[2] << 8) | ep[3]; 327 i = (ep[4] << 8) | ep[5]; 328 329 tp = &enametable[(i ^ j) & (HASHNAMESIZE-1)]; 330 while (tp->e_nxt) 331 if (tp->e_addr0 == i && 332 tp->e_addr1 == j && 333 tp->e_addr2 == k) 334 return tp; 335 else 336 tp = tp->e_nxt; 337 tp->e_addr0 = i; 338 tp->e_addr1 = j; 339 tp->e_addr2 = k; 340 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 341 if (tp->e_nxt == NULL) 342 error("lookup_emem: calloc"); 343 344 return tp; 345 } 346 347 /* 348 * Find the hash node that corresponds to the bytestring 'bs' 349 * with length 'nlen' 350 */ 351 352 static inline struct enamemem * 353 lookup_bytestring(register const u_char *bs, const unsigned int nlen) 354 { 355 struct enamemem *tp; 356 register u_int i, j, k; 357 358 if (nlen >= 6) { 359 k = (bs[0] << 8) | bs[1]; 360 j = (bs[2] << 8) | bs[3]; 361 i = (bs[4] << 8) | bs[5]; 362 } else if (nlen >= 4) { 363 k = (bs[0] << 8) | bs[1]; 364 j = (bs[2] << 8) | bs[3]; 365 i = 0; 366 } else 367 i = j = k = 0; 368 369 tp = &bytestringtable[(i ^ j) & (HASHNAMESIZE-1)]; 370 while (tp->e_nxt) 371 if (tp->e_addr0 == i && 372 tp->e_addr1 == j && 373 tp->e_addr2 == k && 374 memcmp((const char *)bs, (const char *)(tp->e_bs), nlen) == 0) 375 return tp; 376 else 377 tp = tp->e_nxt; 378 379 tp->e_addr0 = i; 380 tp->e_addr1 = j; 381 tp->e_addr2 = k; 382 383 tp->e_bs = (u_char *) calloc(1, nlen + 1); 384 memcpy(tp->e_bs, bs, nlen); 385 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 386 if (tp->e_nxt == NULL) 387 error("lookup_bytestring: calloc"); 388 389 return tp; 390 } 391 392 /* Find the hash node that corresponds the NSAP 'nsap' */ 393 394 static inline struct enamemem * 395 lookup_nsap(register const u_char *nsap) 396 { 397 register u_int i, j, k; 398 unsigned int nlen = *nsap; 399 struct enamemem *tp; 400 const u_char *ensap = nsap + nlen - 6; 401 402 if (nlen > 6) { 403 k = (ensap[0] << 8) | ensap[1]; 404 j = (ensap[2] << 8) | ensap[3]; 405 i = (ensap[4] << 8) | ensap[5]; 406 } 407 else 408 i = j = k = 0; 409 410 tp = &nsaptable[(i ^ j) & (HASHNAMESIZE-1)]; 411 while (tp->e_nxt) 412 if (tp->e_addr0 == i && 413 tp->e_addr1 == j && 414 tp->e_addr2 == k && 415 tp->e_nsap[0] == nlen && 416 memcmp((const char *)&(nsap[1]), 417 (char *)&(tp->e_nsap[1]), nlen) == 0) 418 return tp; 419 else 420 tp = tp->e_nxt; 421 tp->e_addr0 = i; 422 tp->e_addr1 = j; 423 tp->e_addr2 = k; 424 tp->e_nsap = (u_char *)malloc(nlen + 1); 425 if (tp->e_nsap == NULL) 426 error("lookup_nsap: malloc"); 427 memcpy((char *)tp->e_nsap, (const char *)nsap, nlen + 1); 428 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 429 if (tp->e_nxt == NULL) 430 error("lookup_nsap: calloc"); 431 432 return tp; 433 } 434 435 /* Find the hash node that corresponds the protoid 'pi'. */ 436 437 static inline struct protoidmem * 438 lookup_protoid(const u_char *pi) 439 { 440 register u_int i, j; 441 struct protoidmem *tp; 442 443 /* 5 octets won't be aligned */ 444 i = (((pi[0] << 8) + pi[1]) << 8) + pi[2]; 445 j = (pi[3] << 8) + pi[4]; 446 /* XXX should be endian-insensitive, but do big-endian testing XXX */ 447 448 tp = &protoidtable[(i ^ j) & (HASHNAMESIZE-1)]; 449 while (tp->p_nxt) 450 if (tp->p_oui == i && tp->p_proto == j) 451 return tp; 452 else 453 tp = tp->p_nxt; 454 tp->p_oui = i; 455 tp->p_proto = j; 456 tp->p_nxt = (struct protoidmem *)calloc(1, sizeof(*tp)); 457 if (tp->p_nxt == NULL) 458 error("lookup_protoid: calloc"); 459 460 return tp; 461 } 462 463 const char * 464 etheraddr_string(register const u_char *ep) 465 { 466 register int i; 467 register char *cp; 468 register struct enamemem *tp; 469 int oui; 470 char buf[BUFSIZE]; 471 472 tp = lookup_emem(ep); 473 if (tp->e_name) 474 return (tp->e_name); 475 #ifdef USE_ETHER_NTOHOST 476 if (!nflag) { 477 char buf2[BUFSIZE]; 478 479 /* 480 * We don't cast it to "const struct ether_addr *" 481 * because some systems fail to declare the second 482 * argument as a "const" pointer, even though they 483 * don't modify what it points to. 484 */ 485 if (ether_ntohost(buf2, (struct ether_addr *)ep) == 0) { 486 tp->e_name = strdup(buf2); 487 return (tp->e_name); 488 } 489 } 490 #endif 491 cp = buf; 492 oui = EXTRACT_24BITS(ep); 493 *cp++ = hex[*ep >> 4 ]; 494 *cp++ = hex[*ep++ & 0xf]; 495 for (i = 5; --i >= 0;) { 496 *cp++ = ':'; 497 *cp++ = hex[*ep >> 4 ]; 498 *cp++ = hex[*ep++ & 0xf]; 499 } 500 501 if (!nflag) { 502 snprintf(cp, BUFSIZE - (2 + 5*3), " (oui %s)", 503 tok2str(oui_values, "Unknown", oui)); 504 } else 505 *cp = '\0'; 506 tp->e_name = strdup(buf); 507 return (tp->e_name); 508 } 509 510 const char * 511 linkaddr_string(const u_char *ep, const unsigned int type, const unsigned int len) 512 { 513 register u_int i; 514 register char *cp; 515 register struct enamemem *tp; 516 517 if (type == LINKADDR_ETHER && len == ETHER_ADDR_LEN) { 518 return etheraddr_string(ep); 519 } 520 521 if (type == LINKADDR_FRELAY) { 522 return q922_string(ep); 523 } 524 525 tp = lookup_bytestring(ep, len); 526 if (tp->e_name) 527 return (tp->e_name); 528 529 tp->e_name = cp = (char *)malloc(len*3); 530 if (tp->e_name == NULL) 531 error("linkaddr_string: malloc"); 532 *cp++ = hex[*ep >> 4]; 533 *cp++ = hex[*ep++ & 0xf]; 534 for (i = len-1; i > 0 ; --i) { 535 *cp++ = ':'; 536 *cp++ = hex[*ep >> 4]; 537 *cp++ = hex[*ep++ & 0xf]; 538 } 539 *cp = '\0'; 540 return (tp->e_name); 541 } 542 543 const char * 544 etherproto_string(u_short port) 545 { 546 register char *cp; 547 register struct hnamemem *tp; 548 register u_int32_t i = port; 549 char buf[sizeof("0000")]; 550 551 for (tp = &eprototable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 552 if (tp->addr == i) 553 return (tp->name); 554 555 tp->addr = i; 556 tp->nxt = newhnamemem(); 557 558 cp = buf; 559 NTOHS(port); 560 *cp++ = hex[port >> 12 & 0xf]; 561 *cp++ = hex[port >> 8 & 0xf]; 562 *cp++ = hex[port >> 4 & 0xf]; 563 *cp++ = hex[port & 0xf]; 564 *cp++ = '\0'; 565 tp->name = strdup(buf); 566 return (tp->name); 567 } 568 569 const char * 570 protoid_string(register const u_char *pi) 571 { 572 register u_int i, j; 573 register char *cp; 574 register struct protoidmem *tp; 575 char buf[sizeof("00:00:00:00:00")]; 576 577 tp = lookup_protoid(pi); 578 if (tp->p_name) 579 return tp->p_name; 580 581 cp = buf; 582 if ((j = *pi >> 4) != 0) 583 *cp++ = hex[j]; 584 *cp++ = hex[*pi++ & 0xf]; 585 for (i = 4; (int)--i >= 0;) { 586 *cp++ = ':'; 587 if ((j = *pi >> 4) != 0) 588 *cp++ = hex[j]; 589 *cp++ = hex[*pi++ & 0xf]; 590 } 591 *cp = '\0'; 592 tp->p_name = strdup(buf); 593 return (tp->p_name); 594 } 595 596 #define ISONSAP_MAX_LENGTH 20 597 const char * 598 isonsap_string(const u_char *nsap, register u_int nsap_length) 599 { 600 register u_int nsap_idx; 601 register char *cp; 602 register struct enamemem *tp; 603 604 if (nsap_length < 1 || nsap_length > ISONSAP_MAX_LENGTH) 605 return ("isonsap_string: illegal length"); 606 607 tp = lookup_nsap(nsap); 608 if (tp->e_name) 609 return tp->e_name; 610 611 tp->e_name = cp = (char *)malloc(sizeof("xx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xx")); 612 if (cp == NULL) 613 error("isonsap_string: malloc"); 614 615 for (nsap_idx = 0; nsap_idx < nsap_length; nsap_idx++) { 616 *cp++ = hex[*nsap >> 4]; 617 *cp++ = hex[*nsap++ & 0xf]; 618 if (((nsap_idx & 1) == 0) && 619 (nsap_idx + 1 < nsap_length)) { 620 *cp++ = '.'; 621 } 622 } 623 *cp = '\0'; 624 return (tp->e_name); 625 } 626 627 const char * 628 tcpport_string(u_short port) 629 { 630 register struct hnamemem *tp; 631 register u_int32_t i = port; 632 char buf[sizeof("00000")]; 633 634 for (tp = &tporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 635 if (tp->addr == i) 636 return (tp->name); 637 638 tp->addr = i; 639 tp->nxt = newhnamemem(); 640 641 (void)snprintf(buf, sizeof(buf), "%u", i); 642 tp->name = strdup(buf); 643 return (tp->name); 644 } 645 646 const char * 647 udpport_string(register u_short port) 648 { 649 register struct hnamemem *tp; 650 register u_int32_t i = port; 651 char buf[sizeof("00000")]; 652 653 for (tp = &uporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 654 if (tp->addr == i) 655 return (tp->name); 656 657 tp->addr = i; 658 tp->nxt = newhnamemem(); 659 660 (void)snprintf(buf, sizeof(buf), "%u", i); 661 tp->name = strdup(buf); 662 return (tp->name); 663 } 664 665 const char * 666 ipxsap_string(u_short port) 667 { 668 register char *cp; 669 register struct hnamemem *tp; 670 register u_int32_t i = port; 671 char buf[sizeof("0000")]; 672 673 for (tp = &ipxsaptable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 674 if (tp->addr == i) 675 return (tp->name); 676 677 tp->addr = i; 678 tp->nxt = newhnamemem(); 679 680 cp = buf; 681 NTOHS(port); 682 *cp++ = hex[port >> 12 & 0xf]; 683 *cp++ = hex[port >> 8 & 0xf]; 684 *cp++ = hex[port >> 4 & 0xf]; 685 *cp++ = hex[port & 0xf]; 686 *cp++ = '\0'; 687 tp->name = strdup(buf); 688 return (tp->name); 689 } 690 691 static void 692 init_servarray(void) 693 { 694 struct servent *sv; 695 register struct hnamemem *table; 696 register int i; 697 char buf[sizeof("0000000000")]; 698 699 while ((sv = getservent()) != NULL) { 700 int port = ntohs(sv->s_port); 701 i = port & (HASHNAMESIZE-1); 702 if (strcmp(sv->s_proto, "tcp") == 0) 703 table = &tporttable[i]; 704 else if (strcmp(sv->s_proto, "udp") == 0) 705 table = &uporttable[i]; 706 else 707 continue; 708 709 while (table->name) 710 table = table->nxt; 711 if (nflag) { 712 (void)snprintf(buf, sizeof(buf), "%d", port); 713 table->name = strdup(buf); 714 } else 715 table->name = strdup(sv->s_name); 716 table->addr = port; 717 table->nxt = newhnamemem(); 718 } 719 endservent(); 720 } 721 722 /* in libpcap.a (nametoaddr.c) */ 723 #if defined(WIN32) && !defined(USE_STATIC_LIBPCAP) 724 __declspec(dllimport) 725 #else 726 extern 727 #endif 728 const struct eproto { 729 const char *s; 730 u_short p; 731 } eproto_db[]; 732 733 static void 734 init_eprotoarray(void) 735 { 736 register int i; 737 register struct hnamemem *table; 738 739 for (i = 0; eproto_db[i].s; i++) { 740 int j = htons(eproto_db[i].p) & (HASHNAMESIZE-1); 741 table = &eprototable[j]; 742 while (table->name) 743 table = table->nxt; 744 table->name = eproto_db[i].s; 745 table->addr = htons(eproto_db[i].p); 746 table->nxt = newhnamemem(); 747 } 748 } 749 750 static struct protoidlist { 751 const u_char protoid[5]; 752 const char *name; 753 } protoidlist[] = { 754 {{ 0x00, 0x00, 0x0c, 0x01, 0x07 }, "CiscoMLS" }, 755 {{ 0x00, 0x00, 0x0c, 0x20, 0x00 }, "CiscoCDP" }, 756 {{ 0x00, 0x00, 0x0c, 0x20, 0x01 }, "CiscoCGMP" }, 757 {{ 0x00, 0x00, 0x0c, 0x20, 0x03 }, "CiscoVTP" }, 758 {{ 0x00, 0xe0, 0x2b, 0x00, 0xbb }, "ExtremeEDP" }, 759 {{ 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } 760 }; 761 762 /* 763 * SNAP proto IDs with org code 0:0:0 are actually encapsulated Ethernet 764 * types. 765 */ 766 static void 767 init_protoidarray(void) 768 { 769 register int i; 770 register struct protoidmem *tp; 771 struct protoidlist *pl; 772 u_char protoid[5]; 773 774 protoid[0] = 0; 775 protoid[1] = 0; 776 protoid[2] = 0; 777 for (i = 0; eproto_db[i].s; i++) { 778 u_short etype = htons(eproto_db[i].p); 779 780 memcpy((char *)&protoid[3], (char *)&etype, 2); 781 tp = lookup_protoid(protoid); 782 tp->p_name = strdup(eproto_db[i].s); 783 } 784 /* Hardwire some SNAP proto ID names */ 785 for (pl = protoidlist; pl->name != NULL; ++pl) { 786 tp = lookup_protoid(pl->protoid); 787 /* Don't override existing name */ 788 if (tp->p_name != NULL) 789 continue; 790 791 tp->p_name = pl->name; 792 } 793 } 794 795 static struct etherlist { 796 const u_char addr[6]; 797 const char *name; 798 } etherlist[] = { 799 {{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, "Broadcast" }, 800 {{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } 801 }; 802 803 /* 804 * Initialize the ethers hash table. We take two different approaches 805 * depending on whether or not the system provides the ethers name 806 * service. If it does, we just wire in a few names at startup, 807 * and etheraddr_string() fills in the table on demand. If it doesn't, 808 * then we suck in the entire /etc/ethers file at startup. The idea 809 * is that parsing the local file will be fast, but spinning through 810 * all the ethers entries via NIS & next_etherent might be very slow. 811 * 812 * XXX pcap_next_etherent doesn't belong in the pcap interface, but 813 * since the pcap module already does name-to-address translation, 814 * it's already does most of the work for the ethernet address-to-name 815 * translation, so we just pcap_next_etherent as a convenience. 816 */ 817 static void 818 init_etherarray(void) 819 { 820 register struct etherlist *el; 821 register struct enamemem *tp; 822 #ifdef USE_ETHER_NTOHOST 823 char name[256]; 824 #else 825 register struct pcap_etherent *ep; 826 register FILE *fp; 827 828 /* Suck in entire ethers file */ 829 fp = fopen(PCAP_ETHERS_FILE, "r"); 830 if (fp != NULL) { 831 while ((ep = pcap_next_etherent(fp)) != NULL) { 832 tp = lookup_emem(ep->addr); 833 tp->e_name = strdup(ep->name); 834 } 835 (void)fclose(fp); 836 } 837 #endif 838 839 /* Hardwire some ethernet names */ 840 for (el = etherlist; el->name != NULL; ++el) { 841 tp = lookup_emem(el->addr); 842 /* Don't override existing name */ 843 if (tp->e_name != NULL) 844 continue; 845 846 #ifdef USE_ETHER_NTOHOST 847 /* 848 * Use YP/NIS version of name if available. 849 * 850 * We don't cast it to "const struct ether_addr *" 851 * because some systems don't modify the Ethernet 852 * address but fail to declare the second argument 853 * as a "const" pointer. 854 */ 855 if (ether_ntohost(name, (struct ether_addr *)el->addr) == 0) { 856 tp->e_name = strdup(name); 857 continue; 858 } 859 #endif 860 tp->e_name = el->name; 861 } 862 } 863 864 static struct tok ipxsap_db[] = { 865 { 0x0000, "Unknown" }, 866 { 0x0001, "User" }, 867 { 0x0002, "User Group" }, 868 { 0x0003, "PrintQueue" }, 869 { 0x0004, "FileServer" }, 870 { 0x0005, "JobServer" }, 871 { 0x0006, "Gateway" }, 872 { 0x0007, "PrintServer" }, 873 { 0x0008, "ArchiveQueue" }, 874 { 0x0009, "ArchiveServer" }, 875 { 0x000a, "JobQueue" }, 876 { 0x000b, "Administration" }, 877 { 0x000F, "Novell TI-RPC" }, 878 { 0x0017, "Diagnostics" }, 879 { 0x0020, "NetBIOS" }, 880 { 0x0021, "NAS SNA Gateway" }, 881 { 0x0023, "NACS AsyncGateway" }, 882 { 0x0024, "RemoteBridge/RoutingService" }, 883 { 0x0026, "BridgeServer" }, 884 { 0x0027, "TCP/IP Gateway" }, 885 { 0x0028, "Point-to-point X.25 BridgeServer" }, 886 { 0x0029, "3270 Gateway" }, 887 { 0x002a, "CHI Corp" }, 888 { 0x002c, "PC Chalkboard" }, 889 { 0x002d, "TimeSynchServer" }, 890 { 0x002e, "ARCserve5.0/PalindromeBackup" }, 891 { 0x0045, "DI3270 Gateway" }, 892 { 0x0047, "AdvertisingPrintServer" }, 893 { 0x004a, "NetBlazerModems" }, 894 { 0x004b, "BtrieveVAP" }, 895 { 0x004c, "NetwareSQL" }, 896 { 0x004d, "XtreeNetwork" }, 897 { 0x0050, "BtrieveVAP4.11" }, 898 { 0x0052, "QuickLink" }, 899 { 0x0053, "PrintQueueUser" }, 900 { 0x0058, "Multipoint X.25 Router" }, 901 { 0x0060, "STLB/NLM" }, 902 { 0x0064, "ARCserve" }, 903 { 0x0066, "ARCserve3.0" }, 904 { 0x0072, "WAN CopyUtility" }, 905 { 0x007a, "TES-NetwareVMS" }, 906 { 0x0092, "WATCOM Debugger/EmeraldTapeBackupServer" }, 907 { 0x0095, "DDA OBGYN" }, 908 { 0x0098, "NetwareAccessServer" }, 909 { 0x009a, "Netware for VMS II/NamedPipeServer" }, 910 { 0x009b, "NetwareAccessServer" }, 911 { 0x009e, "PortableNetwareServer/SunLinkNVT" }, 912 { 0x00a1, "PowerchuteAPC UPS" }, 913 { 0x00aa, "LAWserve" }, 914 { 0x00ac, "CompaqIDA StatusMonitor" }, 915 { 0x0100, "PIPE STAIL" }, 916 { 0x0102, "LAN ProtectBindery" }, 917 { 0x0103, "OracleDataBaseServer" }, 918 { 0x0107, "Netware386/RSPX RemoteConsole" }, 919 { 0x010f, "NovellSNA Gateway" }, 920 { 0x0111, "TestServer" }, 921 { 0x0112, "HP PrintServer" }, 922 { 0x0114, "CSA MUX" }, 923 { 0x0115, "CSA LCA" }, 924 { 0x0116, "CSA CM" }, 925 { 0x0117, "CSA SMA" }, 926 { 0x0118, "CSA DBA" }, 927 { 0x0119, "CSA NMA" }, 928 { 0x011a, "CSA SSA" }, 929 { 0x011b, "CSA STATUS" }, 930 { 0x011e, "CSA APPC" }, 931 { 0x0126, "SNA TEST SSA Profile" }, 932 { 0x012a, "CSA TRACE" }, 933 { 0x012b, "NetwareSAA" }, 934 { 0x012e, "IKARUS VirusScan" }, 935 { 0x0130, "CommunicationsExecutive" }, 936 { 0x0133, "NNS DomainServer/NetwareNamingServicesDomain" }, 937 { 0x0135, "NetwareNamingServicesProfile" }, 938 { 0x0137, "Netware386 PrintQueue/NNS PrintQueue" }, 939 { 0x0141, "LAN SpoolServer" }, 940 { 0x0152, "IRMALAN Gateway" }, 941 { 0x0154, "NamedPipeServer" }, 942 { 0x0166, "NetWareManagement" }, 943 { 0x0168, "Intel PICKIT CommServer/Intel CAS TalkServer" }, 944 { 0x0173, "Compaq" }, 945 { 0x0174, "Compaq SNMP Agent" }, 946 { 0x0175, "Compaq" }, 947 { 0x0180, "XTreeServer/XTreeTools" }, 948 { 0x018A, "NASI ServicesBroadcastServer" }, 949 { 0x01b0, "GARP Gateway" }, 950 { 0x01b1, "Binfview" }, 951 { 0x01bf, "IntelLanDeskManager" }, 952 { 0x01ca, "AXTEC" }, 953 { 0x01cb, "ShivaNetModem/E" }, 954 { 0x01cc, "ShivaLanRover/E" }, 955 { 0x01cd, "ShivaLanRover/T" }, 956 { 0x01ce, "ShivaUniversal" }, 957 { 0x01d8, "CastelleFAXPressServer" }, 958 { 0x01da, "CastelleLANPressPrintServer" }, 959 { 0x01dc, "CastelleFAX/Xerox7033 FaxServer/ExcelLanFax" }, 960 { 0x01f0, "LEGATO" }, 961 { 0x01f5, "LEGATO" }, 962 { 0x0233, "NMS Agent/NetwareManagementAgent" }, 963 { 0x0237, "NMS IPX Discovery/LANternReadWriteChannel" }, 964 { 0x0238, "NMS IP Discovery/LANternTrapAlarmChannel" }, 965 { 0x023a, "LANtern" }, 966 { 0x023c, "MAVERICK" }, 967 { 0x023f, "NovellSMDR" }, 968 { 0x024e, "NetwareConnect" }, 969 { 0x024f, "NASI ServerBroadcast Cisco" }, 970 { 0x026a, "NMS ServiceConsole" }, 971 { 0x026b, "TimeSynchronizationServer Netware 4.x" }, 972 { 0x0278, "DirectoryServer Netware 4.x" }, 973 { 0x027b, "NetwareManagementAgent" }, 974 { 0x0280, "Novell File and Printer Sharing Service for PC" }, 975 { 0x0304, "NovellSAA Gateway" }, 976 { 0x0308, "COM/VERMED" }, 977 { 0x030a, "GalacticommWorldgroupServer" }, 978 { 0x030c, "IntelNetport2/HP JetDirect/HP Quicksilver" }, 979 { 0x0320, "AttachmateGateway" }, 980 { 0x0327, "MicrosoftDiagnostiocs" }, 981 { 0x0328, "WATCOM SQL Server" }, 982 { 0x0335, "MultiTechSystems MultisynchCommServer" }, 983 { 0x0343, "Xylogics RemoteAccessServer/LANModem" }, 984 { 0x0355, "ArcadaBackupExec" }, 985 { 0x0358, "MSLCD1" }, 986 { 0x0361, "NETINELO" }, 987 { 0x037e, "Powerchute UPS Monitoring" }, 988 { 0x037f, "ViruSafeNotify" }, 989 { 0x0386, "HP Bridge" }, 990 { 0x0387, "HP Hub" }, 991 { 0x0394, "NetWare SAA Gateway" }, 992 { 0x039b, "LotusNotes" }, 993 { 0x03b7, "CertusAntiVirus" }, 994 { 0x03c4, "ARCserve4.0" }, 995 { 0x03c7, "LANspool3.5" }, 996 { 0x03d7, "LexmarkPrinterServer" }, 997 { 0x03d8, "LexmarkXLE PrinterServer" }, 998 { 0x03dd, "BanyanENS NetwareClient" }, 999 { 0x03de, "GuptaSequelBaseServer/NetWareSQL" }, 1000 { 0x03e1, "UnivelUnixware" }, 1001 { 0x03e4, "UnivelUnixware" }, 1002 { 0x03fc, "IntelNetport" }, 1003 { 0x03fd, "PrintServerQueue" }, 1004 { 0x040A, "ipnServer" }, 1005 { 0x040D, "LVERRMAN" }, 1006 { 0x040E, "LVLIC" }, 1007 { 0x0414, "NET Silicon (DPI)/Kyocera" }, 1008 { 0x0429, "SiteLockVirus" }, 1009 { 0x0432, "UFHELPR???" }, 1010 { 0x0433, "Synoptics281xAdvancedSNMPAgent" }, 1011 { 0x0444, "MicrosoftNT SNA Server" }, 1012 { 0x0448, "Oracle" }, 1013 { 0x044c, "ARCserve5.01" }, 1014 { 0x0457, "CanonGP55" }, 1015 { 0x045a, "QMS Printers" }, 1016 { 0x045b, "DellSCSI Array" }, 1017 { 0x0491, "NetBlazerModems" }, 1018 { 0x04ac, "OnTimeScheduler" }, 1019 { 0x04b0, "CD-Net" }, 1020 { 0x0513, "EmulexNQA" }, 1021 { 0x0520, "SiteLockChecks" }, 1022 { 0x0529, "SiteLockChecks" }, 1023 { 0x052d, "CitrixOS2 AppServer" }, 1024 { 0x0535, "Tektronix" }, 1025 { 0x0536, "Milan" }, 1026 { 0x055d, "Attachmate SNA gateway" }, 1027 { 0x056b, "IBM8235 ModemServer" }, 1028 { 0x056c, "ShivaLanRover/E PLUS" }, 1029 { 0x056d, "ShivaLanRover/T PLUS" }, 1030 { 0x0580, "McAfeeNetShield" }, 1031 { 0x05B8, "NLM to workstation communication (Revelation Software)" }, 1032 { 0x05BA, "CompatibleSystemsRouters" }, 1033 { 0x05BE, "CheyenneHierarchicalStorageManager" }, 1034 { 0x0606, "JCWatermarkImaging" }, 1035 { 0x060c, "AXISNetworkPrinter" }, 1036 { 0x0610, "AdaptecSCSIManagement" }, 1037 { 0x0621, "IBM AntiVirus" }, 1038 { 0x0640, "Windows95 RemoteRegistryService" }, 1039 { 0x064e, "MicrosoftIIS" }, 1040 { 0x067b, "Microsoft Win95/98 File and Print Sharing for NetWare" }, 1041 { 0x067c, "Microsoft Win95/98 File and Print Sharing for NetWare" }, 1042 { 0x076C, "Xerox" }, 1043 { 0x079b, "ShivaLanRover/E 115" }, 1044 { 0x079c, "ShivaLanRover/T 115" }, 1045 { 0x07B4, "CubixWorldDesk" }, 1046 { 0x07c2, "Quarterdeck IWare Connect V2.x NLM" }, 1047 { 0x07c1, "Quarterdeck IWare Connect V3.x NLM" }, 1048 { 0x0810, "ELAN License Server Demo" }, 1049 { 0x0824, "ShivaLanRoverAccessSwitch/E" }, 1050 { 0x086a, "ISSC Collector" }, 1051 { 0x087f, "ISSC DAS AgentAIX" }, 1052 { 0x0880, "Intel Netport PRO" }, 1053 { 0x0881, "Intel Netport PRO" }, 1054 { 0x0b29, "SiteLock" }, 1055 { 0x0c29, "SiteLockApplications" }, 1056 { 0x0c2c, "LicensingServer" }, 1057 { 0x2101, "PerformanceTechnologyInstantInternet" }, 1058 { 0x2380, "LAI SiteLock" }, 1059 { 0x238c, "MeetingMaker" }, 1060 { 0x4808, "SiteLockServer/SiteLockMetering" }, 1061 { 0x5555, "SiteLockUser" }, 1062 { 0x6312, "Tapeware" }, 1063 { 0x6f00, "RabbitGateway" }, 1064 { 0x7703, "MODEM" }, 1065 { 0x8002, "NetPortPrinters" }, 1066 { 0x8008, "WordPerfectNetworkVersion" }, 1067 { 0x85BE, "Cisco EIGRP" }, 1068 { 0x8888, "WordPerfectNetworkVersion/QuickNetworkManagement" }, 1069 { 0x9000, "McAfeeNetShield" }, 1070 { 0x9604, "CSA-NT_MON" }, 1071 { 0xb6a8, "OceanIsleReachoutRemoteControl" }, 1072 { 0xf11f, "SiteLockMetering" }, 1073 { 0xf1ff, "SiteLock" }, 1074 { 0xf503, "Microsoft SQL Server" }, 1075 { 0xF905, "IBM TimeAndPlace" }, 1076 { 0xfbfb, "TopCallIII FaxServer" }, 1077 { 0xffff, "AnyService/Wildcard" }, 1078 { 0, (char *)0 } 1079 }; 1080 1081 static void 1082 init_ipxsaparray(void) 1083 { 1084 register int i; 1085 register struct hnamemem *table; 1086 1087 for (i = 0; ipxsap_db[i].s != NULL; i++) { 1088 int j = htons(ipxsap_db[i].v) & (HASHNAMESIZE-1); 1089 table = &ipxsaptable[j]; 1090 while (table->name) 1091 table = table->nxt; 1092 table->name = ipxsap_db[i].s; 1093 table->addr = htons(ipxsap_db[i].v); 1094 table->nxt = newhnamemem(); 1095 } 1096 } 1097 1098 /* 1099 * Initialize the address to name translation machinery. We map all 1100 * non-local IP addresses to numeric addresses if fflag is true (i.e., 1101 * to prevent blocking on the nameserver). localnet is the IP address 1102 * of the local network. mask is its subnet mask. 1103 */ 1104 void 1105 init_addrtoname(u_int32_t localnet, u_int32_t mask) 1106 { 1107 if (fflag) { 1108 f_localnet = localnet; 1109 f_netmask = mask; 1110 } 1111 if (nflag) 1112 /* 1113 * Simplest way to suppress names. 1114 */ 1115 return; 1116 1117 init_etherarray(); 1118 init_servarray(); 1119 init_eprotoarray(); 1120 init_protoidarray(); 1121 init_ipxsaparray(); 1122 } 1123 1124 const char * 1125 dnaddr_string(u_short dnaddr) 1126 { 1127 register struct hnamemem *tp; 1128 1129 for (tp = &dnaddrtable[dnaddr & (HASHNAMESIZE-1)]; tp->nxt != 0; 1130 tp = tp->nxt) 1131 if (tp->addr == dnaddr) 1132 return (tp->name); 1133 1134 tp->addr = dnaddr; 1135 tp->nxt = newhnamemem(); 1136 if (nflag) 1137 tp->name = dnnum_string(dnaddr); 1138 else 1139 tp->name = dnname_string(dnaddr); 1140 1141 return(tp->name); 1142 } 1143 1144 /* Return a zero'ed hnamemem struct and cuts down on calloc() overhead */ 1145 struct hnamemem * 1146 newhnamemem(void) 1147 { 1148 register struct hnamemem *p; 1149 static struct hnamemem *ptr = NULL; 1150 static u_int num = 0; 1151 1152 if (num <= 0) { 1153 num = 64; 1154 ptr = (struct hnamemem *)calloc(num, sizeof (*ptr)); 1155 if (ptr == NULL) 1156 error("newhnamemem: calloc"); 1157 } 1158 --num; 1159 p = ptr++; 1160 return (p); 1161 } 1162 1163 #ifdef INET6 1164 /* Return a zero'ed h6namemem struct and cuts down on calloc() overhead */ 1165 struct h6namemem * 1166 newh6namemem(void) 1167 { 1168 register struct h6namemem *p; 1169 static struct h6namemem *ptr = NULL; 1170 static u_int num = 0; 1171 1172 if (num <= 0) { 1173 num = 64; 1174 ptr = (struct h6namemem *)calloc(num, sizeof (*ptr)); 1175 if (ptr == NULL) 1176 error("newh6namemem: calloc"); 1177 } 1178 --num; 1179 p = ptr++; 1180 return (p); 1181 } 1182 #endif /* INET6 */ 1183