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 25#ifdef HAVE_CONFIG_H 26#include <config.h> 27#endif 28 29#ifdef HAVE_CASPER 30#include <libcasper.h> 31#include <casper/cap_dns.h> 32#endif /* HAVE_CASPER */ 33 34#include "netdissect-stdinc.h" 35 36#ifdef USE_ETHER_NTOHOST 37 #if defined(NET_ETHERNET_H_DECLARES_ETHER_NTOHOST) 38 /* 39 * OK, just include <net/ethernet.h>. 40 */ 41 #include <net/ethernet.h> 42 #elif defined(NETINET_ETHER_H_DECLARES_ETHER_NTOHOST) 43 /* 44 * OK, just include <netinet/ether.h> 45 */ 46 #include <netinet/ether.h> 47 #elif defined(SYS_ETHERNET_H_DECLARES_ETHER_NTOHOST) 48 /* 49 * OK, just include <sys/ethernet.h> 50 */ 51 #include <sys/ethernet.h> 52 #elif defined(ARPA_INET_H_DECLARES_ETHER_NTOHOST) 53 /* 54 * OK, just include <arpa/inet.h> 55 */ 56 #include <arpa/inet.h> 57 #elif defined(NETINET_IF_ETHER_H_DECLARES_ETHER_NTOHOST) 58 /* 59 * OK, include <netinet/if_ether.h>, after all the other stuff we 60 * need to include or define for its benefit. 61 */ 62 #define NEED_NETINET_IF_ETHER_H 63 #else 64 /* 65 * We'll have to declare it ourselves. 66 * If <netinet/if_ether.h> defines struct ether_addr, include 67 * it. Otherwise, define it ourselves. 68 */ 69 #ifdef HAVE_STRUCT_ETHER_ADDR 70 #define NEED_NETINET_IF_ETHER_H 71 #else /* HAVE_STRUCT_ETHER_ADDR */ 72 struct ether_addr { 73 /* Beware FreeBSD calls this "octet". */ 74 unsigned char ether_addr_octet[MAC_ADDR_LEN]; 75 }; 76 #endif /* HAVE_STRUCT_ETHER_ADDR */ 77 #endif /* what declares ether_ntohost() */ 78 79 #ifdef NEED_NETINET_IF_ETHER_H 80 /* 81 * Include diag-control.h before <net/if.h>, which too defines a macro 82 * named ND_UNREACHABLE. 83 */ 84 #include "diag-control.h" 85 #include <net/if.h> /* Needed on some platforms */ 86 #include <netinet/in.h> /* Needed on some platforms */ 87 #include <netinet/if_ether.h> 88 #endif /* NEED_NETINET_IF_ETHER_H */ 89 90 #ifndef HAVE_DECL_ETHER_NTOHOST 91 /* 92 * No header declares it, so declare it ourselves. 93 */ 94 extern int ether_ntohost(char *, const struct ether_addr *); 95 #endif /* !defined(HAVE_DECL_ETHER_NTOHOST) */ 96#endif /* USE_ETHER_NTOHOST */ 97 98#include <pcap.h> 99#include <pcap-namedb.h> 100#ifndef HAVE_GETSERVENT 101#include <getservent.h> 102#endif 103#include <signal.h> 104#include <stdio.h> 105#include <string.h> 106#include <stdlib.h> 107 108#include "netdissect.h" 109#include "addrtoname.h" 110#include "addrtostr.h" 111#include "ethertype.h" 112#include "llc.h" 113#include "extract.h" 114#include "oui.h" 115 116/* 117 * hash tables for whatever-to-name translations 118 * 119 * ndo_error() called on strdup(3) failure with S_ERR_ND_MEM_ALLOC status 120 */ 121 122#define HASHNAMESIZE 4096 123 124struct hnamemem { 125 uint32_t addr; 126 const char *name; 127 struct hnamemem *nxt; 128}; 129 130static struct hnamemem hnametable[HASHNAMESIZE]; 131static struct hnamemem tporttable[HASHNAMESIZE]; 132static struct hnamemem uporttable[HASHNAMESIZE]; 133static struct hnamemem eprototable[HASHNAMESIZE]; 134static struct hnamemem dnaddrtable[HASHNAMESIZE]; 135static struct hnamemem ipxsaptable[HASHNAMESIZE]; 136 137#ifdef _WIN32 138/* 139 * fake gethostbyaddr for Win2k/XP 140 * gethostbyaddr() returns incorrect value when AF_INET6 is passed 141 * to 3rd argument. 142 * 143 * h_name in struct hostent is only valid. 144 */ 145static struct hostent * 146win32_gethostbyaddr(const char *addr, int len, int type) 147{ 148 static struct hostent host; 149 static char hostbuf[NI_MAXHOST]; 150 char hname[NI_MAXHOST]; 151 struct sockaddr_in6 addr6; 152 153 host.h_name = hostbuf; 154 switch (type) { 155 case AF_INET: 156 return gethostbyaddr(addr, len, type); 157 break; 158 case AF_INET6: 159 memset(&addr6, 0, sizeof(addr6)); 160 addr6.sin6_family = AF_INET6; 161 memcpy(&addr6.sin6_addr, addr, len); 162 if (getnameinfo((struct sockaddr *)&addr6, sizeof(addr6), 163 hname, sizeof(hname), NULL, 0, 0)) { 164 return NULL; 165 } else { 166 strlcpy(host.h_name, hname, NI_MAXHOST); 167 return &host; 168 } 169 break; 170 default: 171 return NULL; 172 } 173} 174#define gethostbyaddr win32_gethostbyaddr 175#endif /* _WIN32 */ 176 177struct h6namemem { 178 nd_ipv6 addr; 179 char *name; 180 struct h6namemem *nxt; 181}; 182 183static struct h6namemem h6nametable[HASHNAMESIZE]; 184 185struct enamemem { 186 u_short e_addr0; 187 u_short e_addr1; 188 u_short e_addr2; 189 const char *e_name; 190 u_char *e_nsap; /* used only for nsaptable[] */ 191 struct enamemem *e_nxt; 192}; 193 194static struct enamemem enametable[HASHNAMESIZE]; 195static struct enamemem nsaptable[HASHNAMESIZE]; 196 197struct bsnamemem { 198 u_short bs_addr0; 199 u_short bs_addr1; 200 u_short bs_addr2; 201 const char *bs_name; 202 u_char *bs_bytes; 203 unsigned int bs_nbytes; 204 struct bsnamemem *bs_nxt; 205}; 206 207static struct bsnamemem bytestringtable[HASHNAMESIZE]; 208 209struct protoidmem { 210 uint32_t p_oui; 211 u_short p_proto; 212 const char *p_name; 213 struct protoidmem *p_nxt; 214}; 215 216static struct protoidmem protoidtable[HASHNAMESIZE]; 217 218/* 219 * A faster replacement for inet_ntoa(). 220 */ 221const char * 222intoa(uint32_t addr) 223{ 224 char *cp; 225 u_int byte; 226 int n; 227 static char buf[sizeof(".xxx.xxx.xxx.xxx")]; 228 229 addr = ntohl(addr); 230 cp = buf + sizeof(buf); 231 *--cp = '\0'; 232 233 n = 4; 234 do { 235 byte = addr & 0xff; 236 *--cp = (char)(byte % 10) + '0'; 237 byte /= 10; 238 if (byte > 0) { 239 *--cp = (char)(byte % 10) + '0'; 240 byte /= 10; 241 if (byte > 0) 242 *--cp = (char)byte + '0'; 243 } 244 *--cp = '.'; 245 addr >>= 8; 246 } while (--n > 0); 247 248 return cp + 1; 249} 250 251static uint32_t f_netmask; 252static uint32_t f_localnet; 253#ifdef HAVE_CASPER 254cap_channel_t *capdns; 255#endif 256 257/* 258 * Return a name for the IP address pointed to by ap. This address 259 * is assumed to be in network byte order. 260 * 261 * NOTE: ap is *NOT* necessarily part of the packet data, so you 262 * *CANNOT* use the ND_TCHECK_* or ND_TTEST_* macros on it. Furthermore, 263 * even in cases where it *is* part of the packet data, the caller 264 * would still have to check for a null return value, even if it's 265 * just printing the return value with "%s" - not all versions of 266 * printf print "(null)" with "%s" and a null pointer, some of them 267 * don't check for a null pointer and crash in that case. 268 * 269 * The callers of this routine should, before handing this routine 270 * a pointer to packet data, be sure that the data is present in 271 * the packet buffer. They should probably do those checks anyway, 272 * as other data at that layer might not be IP addresses, and it 273 * also needs to check whether they're present in the packet buffer. 274 */ 275const char * 276ipaddr_string(netdissect_options *ndo, const u_char *ap) 277{ 278 struct hostent *hp; 279 uint32_t addr; 280 struct hnamemem *p; 281 282 memcpy(&addr, ap, sizeof(addr)); 283 p = &hnametable[addr & (HASHNAMESIZE-1)]; 284 for (; p->nxt; p = p->nxt) { 285 if (p->addr == addr) 286 return (p->name); 287 } 288 p->addr = addr; 289 p->nxt = newhnamemem(ndo); 290 291 /* 292 * Print names unless: 293 * (1) -n was given. 294 * (2) Address is foreign and -f was given. (If -f was not 295 * given, f_netmask and f_localnet are 0 and the test 296 * evaluates to true) 297 */ 298 if (!ndo->ndo_nflag && 299 (addr & f_netmask) == f_localnet) { 300#ifdef HAVE_CASPER 301 if (capdns != NULL) { 302 hp = cap_gethostbyaddr(capdns, (char *)&addr, 4, 303 AF_INET); 304 } else 305#endif 306 hp = gethostbyaddr((char *)&addr, 4, AF_INET); 307 if (hp) { 308 char *dotp; 309 310 p->name = strdup(hp->h_name); 311 if (p->name == NULL) 312 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 313 "%s: strdup(hp->h_name)", __func__); 314 if (ndo->ndo_Nflag) { 315 /* Remove domain qualifications */ 316 dotp = strchr(p->name, '.'); 317 if (dotp) 318 *dotp = '\0'; 319 } 320 return (p->name); 321 } 322 } 323 p->name = strdup(intoa(addr)); 324 if (p->name == NULL) 325 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 326 "%s: strdup(intoa(addr))", __func__); 327 return (p->name); 328} 329 330/* 331 * Return a name for the IP6 address pointed to by ap. This address 332 * is assumed to be in network byte order. 333 */ 334const char * 335ip6addr_string(netdissect_options *ndo, const u_char *ap) 336{ 337 struct hostent *hp; 338 union { 339 nd_ipv6 addr; 340 struct for_hash_addr { 341 char fill[14]; 342 uint16_t d; 343 } addra; 344 } addr; 345 struct h6namemem *p; 346 const char *cp; 347 char ntop_buf[INET6_ADDRSTRLEN]; 348 349 memcpy(&addr, ap, sizeof(addr)); 350 p = &h6nametable[addr.addra.d & (HASHNAMESIZE-1)]; 351 for (; p->nxt; p = p->nxt) { 352 if (memcmp(&p->addr, &addr, sizeof(addr)) == 0) 353 return (p->name); 354 } 355 memcpy(p->addr, addr.addr, sizeof(nd_ipv6)); 356 p->nxt = newh6namemem(ndo); 357 358 /* 359 * Do not print names if -n was given. 360 */ 361 if (!ndo->ndo_nflag) { 362#ifdef HAVE_CASPER 363 if (capdns != NULL) { 364 hp = cap_gethostbyaddr(capdns, (char *)&addr, 365 sizeof(addr), AF_INET6); 366 } else 367#endif 368 hp = gethostbyaddr((char *)&addr, sizeof(addr), 369 AF_INET6); 370 if (hp) { 371 char *dotp; 372 373 p->name = strdup(hp->h_name); 374 if (p->name == NULL) 375 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 376 "%s: strdup(hp->h_name)", __func__); 377 if (ndo->ndo_Nflag) { 378 /* Remove domain qualifications */ 379 dotp = strchr(p->name, '.'); 380 if (dotp) 381 *dotp = '\0'; 382 } 383 return (p->name); 384 } 385 } 386 cp = addrtostr6(ap, ntop_buf, sizeof(ntop_buf)); 387 p->name = strdup(cp); 388 if (p->name == NULL) 389 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 390 "%s: strdup(cp)", __func__); 391 return (p->name); 392} 393 394static const char hex[16] = { 395 '0', '1', '2', '3', '4', '5', '6', '7', 396 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' 397}; 398 399/* 400 * Convert an octet to two hex digits. 401 * 402 * Coverity appears either: 403 * 404 * not to believe the C standard when it asserts that a uint8_t is 405 * exactly 8 bits in size; 406 * 407 * not to believe that an unsigned type of exactly 8 bits has a value 408 * in the range of 0 to 255; 409 * 410 * not to believe that, for a range of unsigned values, if you shift 411 * one of those values right by 4 bits, the maximum result value is 412 * the maximum value shifted right by 4 bits, with no stray 1's shifted 413 * in; 414 * 415 * not to believe that 255 >> 4 is 15; 416 * 417 * so it gets upset that we're taking a "tainted" unsigned value, shifting 418 * it right 4 bits, and using it as an index into a 16-element array. 419 * 420 * So we do a stupid pointless masking of the result of the shift with 421 * 0xf, to hammer the point home to Coverity. 422 */ 423static inline char * 424octet_to_hex(char *cp, uint8_t octet) 425{ 426 *cp++ = hex[(octet >> 4) & 0xf]; 427 *cp++ = hex[(octet >> 0) & 0xf]; 428 return (cp); 429} 430 431/* Find the hash node that corresponds the ether address 'ep' */ 432 433static struct enamemem * 434lookup_emem(netdissect_options *ndo, const u_char *ep) 435{ 436 u_int i, j, k; 437 struct enamemem *tp; 438 439 k = (ep[0] << 8) | ep[1]; 440 j = (ep[2] << 8) | ep[3]; 441 i = (ep[4] << 8) | ep[5]; 442 443 tp = &enametable[(i ^ j) & (HASHNAMESIZE-1)]; 444 while (tp->e_nxt) 445 if (tp->e_addr0 == i && 446 tp->e_addr1 == j && 447 tp->e_addr2 == k) 448 return tp; 449 else 450 tp = tp->e_nxt; 451 tp->e_addr0 = (u_short)i; 452 tp->e_addr1 = (u_short)j; 453 tp->e_addr2 = (u_short)k; 454 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 455 if (tp->e_nxt == NULL) 456 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); 457 458 return tp; 459} 460 461/* 462 * Find the hash node that corresponds to the bytestring 'bs' 463 * with length 'nlen' 464 */ 465 466static struct bsnamemem * 467lookup_bytestring(netdissect_options *ndo, const u_char *bs, 468 const unsigned int nlen) 469{ 470 struct bsnamemem *tp; 471 u_int i, j, k; 472 473 if (nlen >= 6) { 474 k = (bs[0] << 8) | bs[1]; 475 j = (bs[2] << 8) | bs[3]; 476 i = (bs[4] << 8) | bs[5]; 477 } else if (nlen >= 4) { 478 k = (bs[0] << 8) | bs[1]; 479 j = (bs[2] << 8) | bs[3]; 480 i = 0; 481 } else 482 i = j = k = 0; 483 484 tp = &bytestringtable[(i ^ j) & (HASHNAMESIZE-1)]; 485 while (tp->bs_nxt) 486 if (nlen == tp->bs_nbytes && 487 tp->bs_addr0 == i && 488 tp->bs_addr1 == j && 489 tp->bs_addr2 == k && 490 memcmp((const char *)bs, (const char *)(tp->bs_bytes), nlen) == 0) 491 return tp; 492 else 493 tp = tp->bs_nxt; 494 495 tp->bs_addr0 = (u_short)i; 496 tp->bs_addr1 = (u_short)j; 497 tp->bs_addr2 = (u_short)k; 498 499 tp->bs_bytes = (u_char *) calloc(1, nlen); 500 if (tp->bs_bytes == NULL) 501 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 502 "%s: calloc", __func__); 503 504 memcpy(tp->bs_bytes, bs, nlen); 505 tp->bs_nbytes = nlen; 506 tp->bs_nxt = (struct bsnamemem *)calloc(1, sizeof(*tp)); 507 if (tp->bs_nxt == NULL) 508 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 509 "%s: calloc", __func__); 510 511 return tp; 512} 513 514/* Find the hash node that corresponds the NSAP 'nsap' */ 515 516static struct enamemem * 517lookup_nsap(netdissect_options *ndo, const u_char *nsap, 518 u_int nsap_length) 519{ 520 u_int i, j, k; 521 struct enamemem *tp; 522 const u_char *ensap; 523 524 if (nsap_length > 6) { 525 ensap = nsap + nsap_length - 6; 526 k = (ensap[0] << 8) | ensap[1]; 527 j = (ensap[2] << 8) | ensap[3]; 528 i = (ensap[4] << 8) | ensap[5]; 529 } 530 else 531 i = j = k = 0; 532 533 tp = &nsaptable[(i ^ j) & (HASHNAMESIZE-1)]; 534 while (tp->e_nxt) 535 if (nsap_length == tp->e_nsap[0] && 536 tp->e_addr0 == i && 537 tp->e_addr1 == j && 538 tp->e_addr2 == k && 539 memcmp((const char *)nsap, 540 (char *)&(tp->e_nsap[1]), nsap_length) == 0) 541 return tp; 542 else 543 tp = tp->e_nxt; 544 tp->e_addr0 = (u_short)i; 545 tp->e_addr1 = (u_short)j; 546 tp->e_addr2 = (u_short)k; 547 tp->e_nsap = (u_char *)malloc(nsap_length + 1); 548 if (tp->e_nsap == NULL) 549 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: malloc", __func__); 550 tp->e_nsap[0] = (u_char)nsap_length; /* guaranteed < ISONSAP_MAX_LENGTH */ 551 memcpy((char *)&tp->e_nsap[1], (const char *)nsap, nsap_length); 552 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 553 if (tp->e_nxt == NULL) 554 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); 555 556 return tp; 557} 558 559/* Find the hash node that corresponds the protoid 'pi'. */ 560 561static struct protoidmem * 562lookup_protoid(netdissect_options *ndo, const u_char *pi) 563{ 564 u_int i, j; 565 struct protoidmem *tp; 566 567 /* 5 octets won't be aligned */ 568 i = (((pi[0] << 8) + pi[1]) << 8) + pi[2]; 569 j = (pi[3] << 8) + pi[4]; 570 /* XXX should be endian-insensitive, but do big-endian testing XXX */ 571 572 tp = &protoidtable[(i ^ j) & (HASHNAMESIZE-1)]; 573 while (tp->p_nxt) 574 if (tp->p_oui == i && tp->p_proto == j) 575 return tp; 576 else 577 tp = tp->p_nxt; 578 tp->p_oui = i; 579 tp->p_proto = (u_short)j; 580 tp->p_nxt = (struct protoidmem *)calloc(1, sizeof(*tp)); 581 if (tp->p_nxt == NULL) 582 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); 583 584 return tp; 585} 586 587const char * 588etheraddr_string(netdissect_options *ndo, const uint8_t *ep) 589{ 590 int i; 591 char *cp; 592 struct enamemem *tp; 593 int oui; 594 char buf[BUFSIZE]; 595 596 tp = lookup_emem(ndo, ep); 597 if (tp->e_name) 598 return (tp->e_name); 599#ifdef USE_ETHER_NTOHOST 600 if (!ndo->ndo_nflag) { 601 char buf2[BUFSIZE]; 602 /* 603 * This is a non-const copy of ep for ether_ntohost(), which 604 * has its second argument non-const in OpenBSD. Also saves a 605 * type cast. 606 */ 607 struct ether_addr ea; 608 609 memcpy (&ea, ep, MAC_ADDR_LEN); 610 if (ether_ntohost(buf2, &ea) == 0) { 611 tp->e_name = strdup(buf2); 612 if (tp->e_name == NULL) 613 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 614 "%s: strdup(buf2)", __func__); 615 return (tp->e_name); 616 } 617 } 618#endif 619 cp = buf; 620 oui = EXTRACT_BE_U_3(ep); 621 cp = octet_to_hex(cp, *ep++); 622 for (i = 5; --i >= 0;) { 623 *cp++ = ':'; 624 cp = octet_to_hex(cp, *ep++); 625 } 626 627 if (!ndo->ndo_nflag) { 628 snprintf(cp, BUFSIZE - (2 + 5*3), " (oui %s)", 629 tok2str(oui_values, "Unknown", oui)); 630 } else 631 *cp = '\0'; 632 tp->e_name = strdup(buf); 633 if (tp->e_name == NULL) 634 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 635 "%s: strdup(buf)", __func__); 636 return (tp->e_name); 637} 638 639const char * 640le64addr_string(netdissect_options *ndo, const uint8_t *ep) 641{ 642 const unsigned int len = 8; 643 u_int i; 644 char *cp; 645 struct bsnamemem *tp; 646 char buf[BUFSIZE]; 647 648 tp = lookup_bytestring(ndo, ep, len); 649 if (tp->bs_name) 650 return (tp->bs_name); 651 652 cp = buf; 653 for (i = len; i > 0 ; --i) { 654 cp = octet_to_hex(cp, *(ep + i - 1)); 655 *cp++ = ':'; 656 } 657 cp --; 658 659 *cp = '\0'; 660 661 tp->bs_name = strdup(buf); 662 if (tp->bs_name == NULL) 663 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 664 "%s: strdup(buf)", __func__); 665 666 return (tp->bs_name); 667} 668 669const char * 670linkaddr_string(netdissect_options *ndo, const uint8_t *ep, 671 const unsigned int type, const unsigned int len) 672{ 673 u_int i; 674 char *cp; 675 struct bsnamemem *tp; 676 677 if (len == 0) 678 return ("<empty>"); 679 680 if (type == LINKADDR_ETHER && len == MAC_ADDR_LEN) 681 return (etheraddr_string(ndo, ep)); 682 683 if (type == LINKADDR_FRELAY) 684 return (q922_string(ndo, ep, len)); 685 686 tp = lookup_bytestring(ndo, ep, len); 687 if (tp->bs_name) 688 return (tp->bs_name); 689 690 tp->bs_name = cp = (char *)malloc(len*3); 691 if (tp->bs_name == NULL) 692 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 693 "%s: malloc", __func__); 694 cp = octet_to_hex(cp, *ep++); 695 for (i = len-1; i > 0 ; --i) { 696 *cp++ = ':'; 697 cp = octet_to_hex(cp, *ep++); 698 } 699 *cp = '\0'; 700 return (tp->bs_name); 701} 702 703#define ISONSAP_MAX_LENGTH 20 704const char * 705isonsap_string(netdissect_options *ndo, const uint8_t *nsap, 706 u_int nsap_length) 707{ 708 u_int nsap_idx; 709 char *cp; 710 struct enamemem *tp; 711 712 if (nsap_length < 1 || nsap_length > ISONSAP_MAX_LENGTH) 713 return ("isonsap_string: illegal length"); 714 715 tp = lookup_nsap(ndo, nsap, nsap_length); 716 if (tp->e_name) 717 return tp->e_name; 718 719 tp->e_name = cp = (char *)malloc(sizeof("xx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xx")); 720 if (cp == NULL) 721 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 722 "%s: malloc", __func__); 723 724 for (nsap_idx = 0; nsap_idx < nsap_length; nsap_idx++) { 725 cp = octet_to_hex(cp, *nsap++); 726 if (((nsap_idx & 1) == 0) && 727 (nsap_idx + 1 < nsap_length)) { 728 *cp++ = '.'; 729 } 730 } 731 *cp = '\0'; 732 return (tp->e_name); 733} 734 735const char * 736tcpport_string(netdissect_options *ndo, u_short port) 737{ 738 struct hnamemem *tp; 739 uint32_t i = port; 740 char buf[sizeof("00000")]; 741 742 for (tp = &tporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 743 if (tp->addr == i) 744 return (tp->name); 745 746 tp->addr = i; 747 tp->nxt = newhnamemem(ndo); 748 749 (void)snprintf(buf, sizeof(buf), "%u", i); 750 tp->name = strdup(buf); 751 if (tp->name == NULL) 752 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 753 "%s: strdup(buf)", __func__); 754 return (tp->name); 755} 756 757const char * 758udpport_string(netdissect_options *ndo, u_short port) 759{ 760 struct hnamemem *tp; 761 uint32_t i = port; 762 char buf[sizeof("00000")]; 763 764 for (tp = &uporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 765 if (tp->addr == i) 766 return (tp->name); 767 768 tp->addr = i; 769 tp->nxt = newhnamemem(ndo); 770 771 (void)snprintf(buf, sizeof(buf), "%u", i); 772 tp->name = strdup(buf); 773 if (tp->name == NULL) 774 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 775 "%s: strdup(buf)", __func__); 776 return (tp->name); 777} 778 779const char * 780ipxsap_string(netdissect_options *ndo, u_short port) 781{ 782 char *cp; 783 struct hnamemem *tp; 784 uint32_t i = port; 785 char buf[sizeof("0000")]; 786 787 for (tp = &ipxsaptable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 788 if (tp->addr == i) 789 return (tp->name); 790 791 tp->addr = i; 792 tp->nxt = newhnamemem(ndo); 793 794 cp = buf; 795 port = ntohs(port); 796 *cp++ = hex[port >> 12 & 0xf]; 797 *cp++ = hex[port >> 8 & 0xf]; 798 *cp++ = hex[port >> 4 & 0xf]; 799 *cp++ = hex[port & 0xf]; 800 *cp++ = '\0'; 801 tp->name = strdup(buf); 802 if (tp->name == NULL) 803 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 804 "%s: strdup(buf)", __func__); 805 return (tp->name); 806} 807 808static void 809init_servarray(netdissect_options *ndo) 810{ 811 struct servent *sv; 812 struct hnamemem *table; 813 int i; 814 char buf[sizeof("0000000000")]; 815 816 while ((sv = getservent()) != NULL) { 817 int port = ntohs(sv->s_port); 818 i = port & (HASHNAMESIZE-1); 819 if (strcmp(sv->s_proto, "tcp") == 0) 820 table = &tporttable[i]; 821 else if (strcmp(sv->s_proto, "udp") == 0) 822 table = &uporttable[i]; 823 else 824 continue; 825 826 while (table->name) 827 table = table->nxt; 828 if (ndo->ndo_nflag) { 829 (void)snprintf(buf, sizeof(buf), "%d", port); 830 table->name = strdup(buf); 831 } else 832 table->name = strdup(sv->s_name); 833 if (table->name == NULL) 834 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 835 "%s: strdup", __func__); 836 837 table->addr = port; 838 table->nxt = newhnamemem(ndo); 839 } 840 endservent(); 841} 842 843static const struct eproto { 844 const char *s; 845 u_short p; 846} eproto_db[] = { 847 { "aarp", ETHERTYPE_AARP }, 848 { "arp", ETHERTYPE_ARP }, 849 { "atalk", ETHERTYPE_ATALK }, 850 { "decnet", ETHERTYPE_DN }, 851 { "ip", ETHERTYPE_IP }, 852 { "ip6", ETHERTYPE_IPV6 }, 853 { "lat", ETHERTYPE_LAT }, 854 { "loopback", ETHERTYPE_LOOPBACK }, 855 { "mopdl", ETHERTYPE_MOPDL }, 856 { "moprc", ETHERTYPE_MOPRC }, 857 { "rarp", ETHERTYPE_REVARP }, 858 { "sca", ETHERTYPE_SCA }, 859 { (char *)0, 0 } 860}; 861 862static void 863init_eprotoarray(netdissect_options *ndo) 864{ 865 int i; 866 struct hnamemem *table; 867 868 for (i = 0; eproto_db[i].s; i++) { 869 int j = htons(eproto_db[i].p) & (HASHNAMESIZE-1); 870 table = &eprototable[j]; 871 while (table->name) 872 table = table->nxt; 873 table->name = eproto_db[i].s; 874 table->addr = htons(eproto_db[i].p); 875 table->nxt = newhnamemem(ndo); 876 } 877} 878 879static const struct protoidlist { 880 const u_char protoid[5]; 881 const char *name; 882} protoidlist[] = { 883 {{ 0x00, 0x00, 0x0c, 0x01, 0x07 }, "CiscoMLS" }, 884 {{ 0x00, 0x00, 0x0c, 0x20, 0x00 }, "CiscoCDP" }, 885 {{ 0x00, 0x00, 0x0c, 0x20, 0x01 }, "CiscoCGMP" }, 886 {{ 0x00, 0x00, 0x0c, 0x20, 0x03 }, "CiscoVTP" }, 887 {{ 0x00, 0xe0, 0x2b, 0x00, 0xbb }, "ExtremeEDP" }, 888 {{ 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } 889}; 890 891/* 892 * SNAP proto IDs with org code 0:0:0 are actually encapsulated Ethernet 893 * types. 894 */ 895static void 896init_protoidarray(netdissect_options *ndo) 897{ 898 int i; 899 struct protoidmem *tp; 900 const struct protoidlist *pl; 901 u_char protoid[5]; 902 903 protoid[0] = 0; 904 protoid[1] = 0; 905 protoid[2] = 0; 906 for (i = 0; eproto_db[i].s; i++) { 907 u_short etype = htons(eproto_db[i].p); 908 909 memcpy((char *)&protoid[3], (char *)&etype, 2); 910 tp = lookup_protoid(ndo, protoid); 911 tp->p_name = strdup(eproto_db[i].s); 912 if (tp->p_name == NULL) 913 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 914 "%s: strdup(eproto_db[i].s)", __func__); 915 } 916 /* Hardwire some SNAP proto ID names */ 917 for (pl = protoidlist; pl->name != NULL; ++pl) { 918 tp = lookup_protoid(ndo, pl->protoid); 919 /* Don't override existing name */ 920 if (tp->p_name != NULL) 921 continue; 922 923 tp->p_name = pl->name; 924 } 925} 926 927static const struct etherlist { 928 const nd_mac_addr addr; 929 const char *name; 930} etherlist[] = { 931 {{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, "Broadcast" }, 932 {{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } 933}; 934 935/* 936 * Initialize the ethers hash table. We take two different approaches 937 * depending on whether or not the system provides the ethers name 938 * service. If it does, we just wire in a few names at startup, 939 * and etheraddr_string() fills in the table on demand. If it doesn't, 940 * then we suck in the entire /etc/ethers file at startup. The idea 941 * is that parsing the local file will be fast, but spinning through 942 * all the ethers entries via NIS & next_etherent might be very slow. 943 * 944 * XXX pcap_next_etherent doesn't belong in the pcap interface, but 945 * since the pcap module already does name-to-address translation, 946 * it's already does most of the work for the ethernet address-to-name 947 * translation, so we just pcap_next_etherent as a convenience. 948 */ 949static void 950init_etherarray(netdissect_options *ndo) 951{ 952 const struct etherlist *el; 953 struct enamemem *tp; 954#ifdef USE_ETHER_NTOHOST 955 char name[256]; 956#else 957 struct pcap_etherent *ep; 958 FILE *fp; 959 960 /* Suck in entire ethers file */ 961 fp = fopen(PCAP_ETHERS_FILE, "r"); 962 if (fp != NULL) { 963 while ((ep = pcap_next_etherent(fp)) != NULL) { 964 tp = lookup_emem(ndo, ep->addr); 965 tp->e_name = strdup(ep->name); 966 if (tp->e_name == NULL) 967 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 968 "%s: strdup(ep->addr)", __func__); 969 } 970 (void)fclose(fp); 971 } 972#endif 973 974 /* Hardwire some ethernet names */ 975 for (el = etherlist; el->name != NULL; ++el) { 976 tp = lookup_emem(ndo, el->addr); 977 /* Don't override existing name */ 978 if (tp->e_name != NULL) 979 continue; 980 981#ifdef USE_ETHER_NTOHOST 982 /* 983 * Use YP/NIS version of name if available. 984 */ 985 /* Same workaround as in etheraddr_string(). */ 986 struct ether_addr ea; 987 memcpy (&ea, el->addr, MAC_ADDR_LEN); 988 if (ether_ntohost(name, &ea) == 0) { 989 tp->e_name = strdup(name); 990 if (tp->e_name == NULL) 991 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 992 "%s: strdup(name)", __func__); 993 continue; 994 } 995#endif 996 tp->e_name = el->name; 997 } 998} 999 1000static const struct ipxsap_ent { 1001 uint16_t v; 1002 const char *s; 1003} ipxsap_db[] = { 1004 { 0x0000, "Unknown" }, 1005 { 0x0001, "User" }, 1006 { 0x0002, "User Group" }, 1007 { 0x0003, "PrintQueue" }, 1008 { 0x0004, "FileServer" }, 1009 { 0x0005, "JobServer" }, 1010 { 0x0006, "Gateway" }, 1011 { 0x0007, "PrintServer" }, 1012 { 0x0008, "ArchiveQueue" }, 1013 { 0x0009, "ArchiveServer" }, 1014 { 0x000a, "JobQueue" }, 1015 { 0x000b, "Administration" }, 1016 { 0x000F, "Novell TI-RPC" }, 1017 { 0x0017, "Diagnostics" }, 1018 { 0x0020, "NetBIOS" }, 1019 { 0x0021, "NAS SNA Gateway" }, 1020 { 0x0023, "NACS AsyncGateway" }, 1021 { 0x0024, "RemoteBridge/RoutingService" }, 1022 { 0x0026, "BridgeServer" }, 1023 { 0x0027, "TCP/IP Gateway" }, 1024 { 0x0028, "Point-to-point X.25 BridgeServer" }, 1025 { 0x0029, "3270 Gateway" }, 1026 { 0x002a, "CHI Corp" }, 1027 { 0x002c, "PC Chalkboard" }, 1028 { 0x002d, "TimeSynchServer" }, 1029 { 0x002e, "ARCserve5.0/PalindromeBackup" }, 1030 { 0x0045, "DI3270 Gateway" }, 1031 { 0x0047, "AdvertisingPrintServer" }, 1032 { 0x004a, "NetBlazerModems" }, 1033 { 0x004b, "BtrieveVAP" }, 1034 { 0x004c, "NetwareSQL" }, 1035 { 0x004d, "XtreeNetwork" }, 1036 { 0x0050, "BtrieveVAP4.11" }, 1037 { 0x0052, "QuickLink" }, 1038 { 0x0053, "PrintQueueUser" }, 1039 { 0x0058, "Multipoint X.25 Router" }, 1040 { 0x0060, "STLB/NLM" }, 1041 { 0x0064, "ARCserve" }, 1042 { 0x0066, "ARCserve3.0" }, 1043 { 0x0072, "WAN CopyUtility" }, 1044 { 0x007a, "TES-NetwareVMS" }, 1045 { 0x0092, "WATCOM Debugger/EmeraldTapeBackupServer" }, 1046 { 0x0095, "DDA OBGYN" }, 1047 { 0x0098, "NetwareAccessServer" }, 1048 { 0x009a, "Netware for VMS II/NamedPipeServer" }, 1049 { 0x009b, "NetwareAccessServer" }, 1050 { 0x009e, "PortableNetwareServer/SunLinkNVT" }, 1051 { 0x00a1, "PowerchuteAPC UPS" }, 1052 { 0x00aa, "LAWserve" }, 1053 { 0x00ac, "CompaqIDA StatusMonitor" }, 1054 { 0x0100, "PIPE STAIL" }, 1055 { 0x0102, "LAN ProtectBindery" }, 1056 { 0x0103, "OracleDataBaseServer" }, 1057 { 0x0107, "Netware386/RSPX RemoteConsole" }, 1058 { 0x010f, "NovellSNA Gateway" }, 1059 { 0x0111, "TestServer" }, 1060 { 0x0112, "HP PrintServer" }, 1061 { 0x0114, "CSA MUX" }, 1062 { 0x0115, "CSA LCA" }, 1063 { 0x0116, "CSA CM" }, 1064 { 0x0117, "CSA SMA" }, 1065 { 0x0118, "CSA DBA" }, 1066 { 0x0119, "CSA NMA" }, 1067 { 0x011a, "CSA SSA" }, 1068 { 0x011b, "CSA STATUS" }, 1069 { 0x011e, "CSA APPC" }, 1070 { 0x0126, "SNA TEST SSA Profile" }, 1071 { 0x012a, "CSA TRACE" }, 1072 { 0x012b, "NetwareSAA" }, 1073 { 0x012e, "IKARUS VirusScan" }, 1074 { 0x0130, "CommunicationsExecutive" }, 1075 { 0x0133, "NNS DomainServer/NetwareNamingServicesDomain" }, 1076 { 0x0135, "NetwareNamingServicesProfile" }, 1077 { 0x0137, "Netware386 PrintQueue/NNS PrintQueue" }, 1078 { 0x0141, "LAN SpoolServer" }, 1079 { 0x0152, "IRMALAN Gateway" }, 1080 { 0x0154, "NamedPipeServer" }, 1081 { 0x0166, "NetWareManagement" }, 1082 { 0x0168, "Intel PICKIT CommServer/Intel CAS TalkServer" }, 1083 { 0x0173, "Compaq" }, 1084 { 0x0174, "Compaq SNMP Agent" }, 1085 { 0x0175, "Compaq" }, 1086 { 0x0180, "XTreeServer/XTreeTools" }, 1087 { 0x018A, "NASI ServicesBroadcastServer" }, 1088 { 0x01b0, "GARP Gateway" }, 1089 { 0x01b1, "Binfview" }, 1090 { 0x01bf, "IntelLanDeskManager" }, 1091 { 0x01ca, "AXTEC" }, 1092 { 0x01cb, "ShivaNetModem/E" }, 1093 { 0x01cc, "ShivaLanRover/E" }, 1094 { 0x01cd, "ShivaLanRover/T" }, 1095 { 0x01ce, "ShivaUniversal" }, 1096 { 0x01d8, "CastelleFAXPressServer" }, 1097 { 0x01da, "CastelleLANPressPrintServer" }, 1098 { 0x01dc, "CastelleFAX/Xerox7033 FaxServer/ExcelLanFax" }, 1099 { 0x01f0, "LEGATO" }, 1100 { 0x01f5, "LEGATO" }, 1101 { 0x0233, "NMS Agent/NetwareManagementAgent" }, 1102 { 0x0237, "NMS IPX Discovery/LANternReadWriteChannel" }, 1103 { 0x0238, "NMS IP Discovery/LANternTrapAlarmChannel" }, 1104 { 0x023a, "LANtern" }, 1105 { 0x023c, "MAVERICK" }, 1106 { 0x023f, "NovellSMDR" }, 1107 { 0x024e, "NetwareConnect" }, 1108 { 0x024f, "NASI ServerBroadcast Cisco" }, 1109 { 0x026a, "NMS ServiceConsole" }, 1110 { 0x026b, "TimeSynchronizationServer Netware 4.x" }, 1111 { 0x0278, "DirectoryServer Netware 4.x" }, 1112 { 0x027b, "NetwareManagementAgent" }, 1113 { 0x0280, "Novell File and Printer Sharing Service for PC" }, 1114 { 0x0304, "NovellSAA Gateway" }, 1115 { 0x0308, "COM/VERMED" }, 1116 { 0x030a, "GalacticommWorldgroupServer" }, 1117 { 0x030c, "IntelNetport2/HP JetDirect/HP Quicksilver" }, 1118 { 0x0320, "AttachmateGateway" }, 1119 { 0x0327, "MicrosoftDiagnostiocs" }, 1120 { 0x0328, "WATCOM SQL Server" }, 1121 { 0x0335, "MultiTechSystems MultisynchCommServer" }, 1122 { 0x0343, "Xylogics RemoteAccessServer/LANModem" }, 1123 { 0x0355, "ArcadaBackupExec" }, 1124 { 0x0358, "MSLCD1" }, 1125 { 0x0361, "NETINELO" }, 1126 { 0x037e, "Powerchute UPS Monitoring" }, 1127 { 0x037f, "ViruSafeNotify" }, 1128 { 0x0386, "HP Bridge" }, 1129 { 0x0387, "HP Hub" }, 1130 { 0x0394, "NetWare SAA Gateway" }, 1131 { 0x039b, "LotusNotes" }, 1132 { 0x03b7, "CertusAntiVirus" }, 1133 { 0x03c4, "ARCserve4.0" }, 1134 { 0x03c7, "LANspool3.5" }, 1135 { 0x03d7, "LexmarkPrinterServer" }, 1136 { 0x03d8, "LexmarkXLE PrinterServer" }, 1137 { 0x03dd, "BanyanENS NetwareClient" }, 1138 { 0x03de, "GuptaSequelBaseServer/NetWareSQL" }, 1139 { 0x03e1, "UnivelUnixware" }, 1140 { 0x03e4, "UnivelUnixware" }, 1141 { 0x03fc, "IntelNetport" }, 1142 { 0x03fd, "PrintServerQueue" }, 1143 { 0x040A, "ipnServer" }, 1144 { 0x040D, "LVERRMAN" }, 1145 { 0x040E, "LVLIC" }, 1146 { 0x0414, "NET Silicon (DPI)/Kyocera" }, 1147 { 0x0429, "SiteLockVirus" }, 1148 { 0x0432, "UFHELPR???" }, 1149 { 0x0433, "Synoptics281xAdvancedSNMPAgent" }, 1150 { 0x0444, "MicrosoftNT SNA Server" }, 1151 { 0x0448, "Oracle" }, 1152 { 0x044c, "ARCserve5.01" }, 1153 { 0x0457, "CanonGP55" }, 1154 { 0x045a, "QMS Printers" }, 1155 { 0x045b, "DellSCSI Array" }, 1156 { 0x0491, "NetBlazerModems" }, 1157 { 0x04ac, "OnTimeScheduler" }, 1158 { 0x04b0, "CD-Net" }, 1159 { 0x0513, "EmulexNQA" }, 1160 { 0x0520, "SiteLockChecks" }, 1161 { 0x0529, "SiteLockChecks" }, 1162 { 0x052d, "CitrixOS2 AppServer" }, 1163 { 0x0535, "Tektronix" }, 1164 { 0x0536, "Milan" }, 1165 { 0x055d, "Attachmate SNA gateway" }, 1166 { 0x056b, "IBM8235 ModemServer" }, 1167 { 0x056c, "ShivaLanRover/E PLUS" }, 1168 { 0x056d, "ShivaLanRover/T PLUS" }, 1169 { 0x0580, "McAfeeNetShield" }, 1170 { 0x05B8, "NLM to workstation communication (Revelation Software)" }, 1171 { 0x05BA, "CompatibleSystemsRouters" }, 1172 { 0x05BE, "CheyenneHierarchicalStorageManager" }, 1173 { 0x0606, "JCWatermarkImaging" }, 1174 { 0x060c, "AXISNetworkPrinter" }, 1175 { 0x0610, "AdaptecSCSIManagement" }, 1176 { 0x0621, "IBM AntiVirus" }, 1177 { 0x0640, "Windows95 RemoteRegistryService" }, 1178 { 0x064e, "MicrosoftIIS" }, 1179 { 0x067b, "Microsoft Win95/98 File and Print Sharing for NetWare" }, 1180 { 0x067c, "Microsoft Win95/98 File and Print Sharing for NetWare" }, 1181 { 0x076C, "Xerox" }, 1182 { 0x079b, "ShivaLanRover/E 115" }, 1183 { 0x079c, "ShivaLanRover/T 115" }, 1184 { 0x07B4, "CubixWorldDesk" }, 1185 { 0x07c2, "Quarterdeck IWare Connect V2.x NLM" }, 1186 { 0x07c1, "Quarterdeck IWare Connect V3.x NLM" }, 1187 { 0x0810, "ELAN License Server Demo" }, 1188 { 0x0824, "ShivaLanRoverAccessSwitch/E" }, 1189 { 0x086a, "ISSC Collector" }, 1190 { 0x087f, "ISSC DAS AgentAIX" }, 1191 { 0x0880, "Intel Netport PRO" }, 1192 { 0x0881, "Intel Netport PRO" }, 1193 { 0x0b29, "SiteLock" }, 1194 { 0x0c29, "SiteLockApplications" }, 1195 { 0x0c2c, "LicensingServer" }, 1196 { 0x2101, "PerformanceTechnologyInstantInternet" }, 1197 { 0x2380, "LAI SiteLock" }, 1198 { 0x238c, "MeetingMaker" }, 1199 { 0x4808, "SiteLockServer/SiteLockMetering" }, 1200 { 0x5555, "SiteLockUser" }, 1201 { 0x6312, "Tapeware" }, 1202 { 0x6f00, "RabbitGateway" }, 1203 { 0x7703, "MODEM" }, 1204 { 0x8002, "NetPortPrinters" }, 1205 { 0x8008, "WordPerfectNetworkVersion" }, 1206 { 0x85BE, "Cisco EIGRP" }, 1207 { 0x8888, "WordPerfectNetworkVersion/QuickNetworkManagement" }, 1208 { 0x9000, "McAfeeNetShield" }, 1209 { 0x9604, "CSA-NT_MON" }, 1210 { 0xb6a8, "OceanIsleReachoutRemoteControl" }, 1211 { 0xf11f, "SiteLockMetering" }, 1212 { 0xf1ff, "SiteLock" }, 1213 { 0xf503, "Microsoft SQL Server" }, 1214 { 0xF905, "IBM TimeAndPlace" }, 1215 { 0xfbfb, "TopCallIII FaxServer" }, 1216 { 0xffff, "AnyService/Wildcard" }, 1217 { 0, (char *)0 } 1218}; 1219 1220static void 1221init_ipxsaparray(netdissect_options *ndo) 1222{ 1223 int i; 1224 struct hnamemem *table; 1225 1226 for (i = 0; ipxsap_db[i].s != NULL; i++) { 1227 u_int j = htons(ipxsap_db[i].v) & (HASHNAMESIZE-1); 1228 table = &ipxsaptable[j]; 1229 while (table->name) 1230 table = table->nxt; 1231 table->name = ipxsap_db[i].s; 1232 table->addr = htons(ipxsap_db[i].v); 1233 table->nxt = newhnamemem(ndo); 1234 } 1235} 1236 1237/* 1238 * Initialize the address to name translation machinery. We map all 1239 * non-local IP addresses to numeric addresses if ndo->ndo_fflag is true 1240 * (i.e., to prevent blocking on the nameserver). localnet is the IP address 1241 * of the local network. mask is its subnet mask. 1242 */ 1243void 1244init_addrtoname(netdissect_options *ndo, uint32_t localnet, uint32_t mask) 1245{ 1246 if (ndo->ndo_fflag) { 1247 f_localnet = localnet; 1248 f_netmask = mask; 1249 } 1250 if (ndo->ndo_nflag) 1251 /* 1252 * Simplest way to suppress names. 1253 */ 1254 return; 1255 1256 init_etherarray(ndo); 1257 init_servarray(ndo); 1258 init_eprotoarray(ndo); 1259 init_protoidarray(ndo); 1260 init_ipxsaparray(ndo); 1261} 1262 1263const char * 1264dnaddr_string(netdissect_options *ndo, u_short dnaddr) 1265{ 1266 struct hnamemem *tp; 1267 1268 for (tp = &dnaddrtable[dnaddr & (HASHNAMESIZE-1)]; tp->nxt != NULL; 1269 tp = tp->nxt) 1270 if (tp->addr == dnaddr) 1271 return (tp->name); 1272 1273 tp->addr = dnaddr; 1274 tp->nxt = newhnamemem(ndo); 1275 tp->name = dnnum_string(ndo, dnaddr); 1276 1277 return(tp->name); 1278} 1279 1280/* Return a zero'ed hnamemem struct and cuts down on calloc() overhead */ 1281struct hnamemem * 1282newhnamemem(netdissect_options *ndo) 1283{ 1284 struct hnamemem *p; 1285 static struct hnamemem *ptr = NULL; 1286 static u_int num = 0; 1287 1288 if (num == 0) { 1289 num = 64; 1290 ptr = (struct hnamemem *)calloc(num, sizeof (*ptr)); 1291 if (ptr == NULL) 1292 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 1293 "%s: calloc", __func__); 1294 } 1295 --num; 1296 p = ptr++; 1297 return (p); 1298} 1299 1300/* Return a zero'ed h6namemem struct and cuts down on calloc() overhead */ 1301struct h6namemem * 1302newh6namemem(netdissect_options *ndo) 1303{ 1304 struct h6namemem *p; 1305 static struct h6namemem *ptr = NULL; 1306 static u_int num = 0; 1307 1308 if (num == 0) { 1309 num = 64; 1310 ptr = (struct h6namemem *)calloc(num, sizeof (*ptr)); 1311 if (ptr == NULL) 1312 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 1313 "%s: calloc", __func__); 1314 } 1315 --num; 1316 p = ptr++; 1317 return (p); 1318} 1319 1320/* Represent TCI part of the 802.1Q 4-octet tag as text. */ 1321const char * 1322ieee8021q_tci_string(const uint16_t tci) 1323{ 1324 static char buf[128]; 1325 snprintf(buf, sizeof(buf), "vlan %u, p %u%s", 1326 tci & 0xfff, 1327 tci >> 13, 1328 (tci & 0x1000) ? ", DEI" : ""); 1329 return buf; 1330} 1331