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#include <sys/cdefs.h> 25#ifndef lint 26__RCSID("$NetBSD: addrtoname.c,v 1.12 2023/08/17 20:19:39 christos Exp $"); 27#endif 28 29#ifdef HAVE_CONFIG_H 30#include <config.h> 31#endif 32 33#ifdef HAVE_CASPER 34#include <libcasper.h> 35#include <casper/cap_dns.h> 36#endif /* HAVE_CASPER */ 37 38#include "netdissect-stdinc.h" 39 40#ifdef USE_ETHER_NTOHOST 41 #if defined(NET_ETHERNET_H_DECLARES_ETHER_NTOHOST) 42 /* 43 * OK, just include <net/ethernet.h>. 44 */ 45 #include <net/ethernet.h> 46 #elif defined(NETINET_ETHER_H_DECLARES_ETHER_NTOHOST) 47 /* 48 * OK, just include <netinet/ether.h> 49 */ 50 #include <netinet/ether.h> 51 #elif defined(SYS_ETHERNET_H_DECLARES_ETHER_NTOHOST) 52 /* 53 * OK, just include <sys/ethernet.h> 54 */ 55 #include <sys/ethernet.h> 56 #elif defined(ARPA_INET_H_DECLARES_ETHER_NTOHOST) 57 /* 58 * OK, just include <arpa/inet.h> 59 */ 60 #include <arpa/inet.h> 61 #elif defined(NETINET_IF_ETHER_H_DECLARES_ETHER_NTOHOST) 62 /* 63 * OK, include <netinet/if_ether.h>, after all the other stuff we 64 * need to include or define for its benefit. 65 */ 66 #define NEED_NETINET_IF_ETHER_H 67 #else 68 /* 69 * We'll have to declare it ourselves. 70 * If <netinet/if_ether.h> defines struct ether_addr, include 71 * it. Otherwise, define it ourselves. 72 */ 73 #ifdef HAVE_STRUCT_ETHER_ADDR 74 #define NEED_NETINET_IF_ETHER_H 75 #else /* HAVE_STRUCT_ETHER_ADDR */ 76 struct ether_addr { 77 /* Beware FreeBSD calls this "octet". */ 78 unsigned char ether_addr_octet[MAC_ADDR_LEN]; 79 }; 80 #endif /* HAVE_STRUCT_ETHER_ADDR */ 81 #endif /* what declares ether_ntohost() */ 82 83 #ifdef NEED_NETINET_IF_ETHER_H 84 /* 85 * Include diag-control.h before <net/if.h>, which too defines a macro 86 * named ND_UNREACHABLE. 87 */ 88 #include "diag-control.h" 89 #include <net/if.h> /* Needed on some platforms */ 90 #include <netinet/in.h> /* Needed on some platforms */ 91 #include <netinet/if_ether.h> 92 #endif /* NEED_NETINET_IF_ETHER_H */ 93 94 #ifndef HAVE_DECL_ETHER_NTOHOST 95 /* 96 * No header declares it, so declare it ourselves. 97 */ 98 extern int ether_ntohost(char *, const struct ether_addr *); 99 #endif /* !defined(HAVE_DECL_ETHER_NTOHOST) */ 100#endif /* USE_ETHER_NTOHOST */ 101 102#include <pcap.h> 103#include <pcap-namedb.h> 104#ifndef HAVE_GETSERVENT 105#include <getservent.h> 106#endif 107#include <signal.h> 108#include <stdio.h> 109#include <string.h> 110#include <stdlib.h> 111 112#include "netdissect.h" 113#include "addrtoname.h" 114#include "addrtostr.h" 115#include "ethertype.h" 116#include "llc.h" 117#include "extract.h" 118#include "oui.h" 119 120/* 121 * hash tables for whatever-to-name translations 122 * 123 * ndo_error() called on strdup(3) failure with S_ERR_ND_MEM_ALLOC status 124 */ 125 126#define HASHNAMESIZE 4096 127 128struct hnamemem { 129 uint32_t addr; 130 const char *name; 131 struct hnamemem *nxt; 132}; 133 134static struct hnamemem hnametable[HASHNAMESIZE]; 135static struct hnamemem tporttable[HASHNAMESIZE]; 136static struct hnamemem uporttable[HASHNAMESIZE]; 137static struct hnamemem eprototable[HASHNAMESIZE]; 138static struct hnamemem dnaddrtable[HASHNAMESIZE]; 139static struct hnamemem ipxsaptable[HASHNAMESIZE]; 140 141#ifdef _WIN32 142/* 143 * fake gethostbyaddr for Win2k/XP 144 * gethostbyaddr() returns incorrect value when AF_INET6 is passed 145 * to 3rd argument. 146 * 147 * h_name in struct hostent is only valid. 148 */ 149static struct hostent * 150win32_gethostbyaddr(const char *addr, int len, int type) 151{ 152 static struct hostent host; 153 static char hostbuf[NI_MAXHOST]; 154 char hname[NI_MAXHOST]; 155 struct sockaddr_in6 addr6; 156 157 host.h_name = hostbuf; 158 switch (type) { 159 case AF_INET: 160 return gethostbyaddr(addr, len, type); 161 break; 162 case AF_INET6: 163 memset(&addr6, 0, sizeof(addr6)); 164 addr6.sin6_family = AF_INET6; 165 memcpy(&addr6.sin6_addr, addr, len); 166 if (getnameinfo((struct sockaddr *)&addr6, sizeof(addr6), 167 hname, sizeof(hname), NULL, 0, 0)) { 168 return NULL; 169 } else { 170 strlcpy(host.h_name, hname, NI_MAXHOST); 171 return &host; 172 } 173 break; 174 default: 175 return NULL; 176 } 177} 178#define gethostbyaddr win32_gethostbyaddr 179#endif /* _WIN32 */ 180 181struct h6namemem { 182 nd_ipv6 addr; 183 char *name; 184 struct h6namemem *nxt; 185}; 186 187static struct h6namemem h6nametable[HASHNAMESIZE]; 188 189struct enamemem { 190 u_short e_addr0; 191 u_short e_addr1; 192 u_short e_addr2; 193 const char *e_name; 194 u_char *e_nsap; /* used only for nsaptable[] */ 195 struct enamemem *e_nxt; 196}; 197 198static struct enamemem enametable[HASHNAMESIZE]; 199static struct enamemem nsaptable[HASHNAMESIZE]; 200 201struct bsnamemem { 202 u_short bs_addr0; 203 u_short bs_addr1; 204 u_short bs_addr2; 205 const char *bs_name; 206 u_char *bs_bytes; 207 unsigned int bs_nbytes; 208 struct bsnamemem *bs_nxt; 209}; 210 211static struct bsnamemem bytestringtable[HASHNAMESIZE]; 212 213struct protoidmem { 214 uint32_t p_oui; 215 u_short p_proto; 216 const char *p_name; 217 struct protoidmem *p_nxt; 218}; 219 220static struct protoidmem protoidtable[HASHNAMESIZE]; 221 222/* 223 * A faster replacement for inet_ntoa(). 224 */ 225const char * 226intoa(uint32_t addr) 227{ 228 char *cp; 229 u_int byte; 230 int n; 231 static char buf[sizeof(".xxx.xxx.xxx.xxx")]; 232 233 addr = ntohl(addr); 234 cp = buf + sizeof(buf); 235 *--cp = '\0'; 236 237 n = 4; 238 do { 239 byte = addr & 0xff; 240 *--cp = (char)(byte % 10) + '0'; 241 byte /= 10; 242 if (byte > 0) { 243 *--cp = (char)(byte % 10) + '0'; 244 byte /= 10; 245 if (byte > 0) 246 *--cp = (char)byte + '0'; 247 } 248 *--cp = '.'; 249 addr >>= 8; 250 } while (--n > 0); 251 252 return cp + 1; 253} 254 255static uint32_t f_netmask; 256static uint32_t f_localnet; 257#ifdef HAVE_CASPER 258cap_channel_t *capdns; 259#endif 260 261/* 262 * Return a name for the IP address pointed to by ap. This address 263 * is assumed to be in network byte order. 264 * 265 * NOTE: ap is *NOT* necessarily part of the packet data, so you 266 * *CANNOT* use the ND_TCHECK_* or ND_TTEST_* macros on it. Furthermore, 267 * even in cases where it *is* part of the packet data, the caller 268 * would still have to check for a null return value, even if it's 269 * just printing the return value with "%s" - not all versions of 270 * printf print "(null)" with "%s" and a null pointer, some of them 271 * don't check for a null pointer and crash in that case. 272 * 273 * The callers of this routine should, before handing this routine 274 * a pointer to packet data, be sure that the data is present in 275 * the packet buffer. They should probably do those checks anyway, 276 * as other data at that layer might not be IP addresses, and it 277 * also needs to check whether they're present in the packet buffer. 278 */ 279const char * 280ipaddr_string(netdissect_options *ndo, const u_char *ap) 281{ 282 struct hostent *hp; 283 uint32_t addr; 284 struct hnamemem *p; 285 286 memcpy(&addr, ap, sizeof(addr)); 287 p = &hnametable[addr & (HASHNAMESIZE-1)]; 288 for (; p->nxt; p = p->nxt) { 289 if (p->addr == addr) 290 return (p->name); 291 } 292 p->addr = addr; 293 p->nxt = newhnamemem(ndo); 294 295 /* 296 * Print names unless: 297 * (1) -n was given. 298 * (2) Address is foreign and -f was given. (If -f was not 299 * given, f_netmask and f_localnet are 0 and the test 300 * evaluates to true) 301 */ 302 if (!ndo->ndo_nflag && 303 (addr & f_netmask) == f_localnet) { 304#ifdef HAVE_CASPER 305 if (capdns != NULL) { 306 hp = cap_gethostbyaddr(capdns, (char *)&addr, 4, 307 AF_INET); 308 } else 309#endif 310 hp = gethostbyaddr((char *)&addr, 4, AF_INET); 311 if (hp) { 312 char *dotp; 313 314 p->name = strdup(hp->h_name); 315 if (p->name == NULL) 316 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 317 "%s: strdup(hp->h_name)", __func__); 318 if (ndo->ndo_Nflag) { 319 /* Remove domain qualifications */ 320 dotp = strchr(p->name, '.'); 321 if (dotp) 322 *dotp = '\0'; 323 } 324 return (p->name); 325 } 326 } 327 p->name = strdup(intoa(addr)); 328 if (p->name == NULL) 329 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 330 "%s: strdup(intoa(addr))", __func__); 331 return (p->name); 332} 333 334/* 335 * Return a name for the IP6 address pointed to by ap. This address 336 * is assumed to be in network byte order. 337 */ 338const char * 339ip6addr_string(netdissect_options *ndo, const u_char *ap) 340{ 341 struct hostent *hp; 342 union { 343 nd_ipv6 addr; 344 struct for_hash_addr { 345 char fill[14]; 346 uint16_t d; 347 } addra; 348 } addr; 349 struct h6namemem *p; 350 const char *cp; 351 char ntop_buf[INET6_ADDRSTRLEN]; 352 353 memcpy(&addr, ap, sizeof(addr)); 354 p = &h6nametable[addr.addra.d & (HASHNAMESIZE-1)]; 355 for (; p->nxt; p = p->nxt) { 356 if (memcmp(&p->addr, &addr, sizeof(addr)) == 0) 357 return (p->name); 358 } 359 memcpy(p->addr, addr.addr, sizeof(nd_ipv6)); 360 p->nxt = newh6namemem(ndo); 361 362 /* 363 * Do not print names if -n was given. 364 */ 365 if (!ndo->ndo_nflag) { 366#ifdef HAVE_CASPER 367 if (capdns != NULL) { 368 hp = cap_gethostbyaddr(capdns, (char *)&addr, 369 sizeof(addr), AF_INET6); 370 } else 371#endif 372 hp = gethostbyaddr((char *)&addr, sizeof(addr), 373 AF_INET6); 374 if (hp) { 375 char *dotp; 376 377 p->name = strdup(hp->h_name); 378 if (p->name == NULL) 379 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 380 "%s: strdup(hp->h_name)", __func__); 381 if (ndo->ndo_Nflag) { 382 /* Remove domain qualifications */ 383 dotp = strchr(p->name, '.'); 384 if (dotp) 385 *dotp = '\0'; 386 } 387 return (p->name); 388 } 389 } 390 cp = addrtostr6(ap, ntop_buf, sizeof(ntop_buf)); 391 p->name = strdup(cp); 392 if (p->name == NULL) 393 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 394 "%s: strdup(cp)", __func__); 395 return (p->name); 396} 397 398static const char hex[16] = { 399 '0', '1', '2', '3', '4', '5', '6', '7', 400 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' 401}; 402 403/* 404 * Convert an octet to two hex digits. 405 * 406 * Coverity appears either: 407 * 408 * not to believe the C standard when it asserts that a uint8_t is 409 * exactly 8 bits in size; 410 * 411 * not to believe that an unsigned type of exactly 8 bits has a value 412 * in the range of 0 to 255; 413 * 414 * not to believe that, for a range of unsigned values, if you shift 415 * one of those values right by 4 bits, the maximum result value is 416 * the maximum value shifted right by 4 bits, with no stray 1's shifted 417 * in; 418 * 419 * not to believe that 255 >> 4 is 15; 420 * 421 * so it gets upset that we're taking a "tainted" unsigned value, shifting 422 * it right 4 bits, and using it as an index into a 16-element array. 423 * 424 * So we do a stupid pointless masking of the result of the shift with 425 * 0xf, to hammer the point home to Coverity. 426 */ 427static inline char * 428octet_to_hex(char *cp, uint8_t octet) 429{ 430 *cp++ = hex[(octet >> 4) & 0xf]; 431 *cp++ = hex[(octet >> 0) & 0xf]; 432 return (cp); 433} 434 435/* Find the hash node that corresponds the ether address 'ep' */ 436 437static struct enamemem * 438lookup_emem(netdissect_options *ndo, const u_char *ep) 439{ 440 u_int i, j, k; 441 struct enamemem *tp; 442 443 k = (ep[0] << 8) | ep[1]; 444 j = (ep[2] << 8) | ep[3]; 445 i = (ep[4] << 8) | ep[5]; 446 447 tp = &enametable[(i ^ j) & (HASHNAMESIZE-1)]; 448 while (tp->e_nxt) 449 if (tp->e_addr0 == i && 450 tp->e_addr1 == j && 451 tp->e_addr2 == k) 452 return tp; 453 else 454 tp = tp->e_nxt; 455 tp->e_addr0 = (u_short)i; 456 tp->e_addr1 = (u_short)j; 457 tp->e_addr2 = (u_short)k; 458 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 459 if (tp->e_nxt == NULL) 460 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); 461 462 return tp; 463} 464 465/* 466 * Find the hash node that corresponds to the bytestring 'bs' 467 * with length 'nlen' 468 */ 469 470static struct bsnamemem * 471lookup_bytestring(netdissect_options *ndo, const u_char *bs, 472 const unsigned int nlen) 473{ 474 struct bsnamemem *tp; 475 u_int i, j, k; 476 477 if (nlen >= 6) { 478 k = (bs[0] << 8) | bs[1]; 479 j = (bs[2] << 8) | bs[3]; 480 i = (bs[4] << 8) | bs[5]; 481 } else if (nlen >= 4) { 482 k = (bs[0] << 8) | bs[1]; 483 j = (bs[2] << 8) | bs[3]; 484 i = 0; 485 } else 486 i = j = k = 0; 487 488 tp = &bytestringtable[(i ^ j) & (HASHNAMESIZE-1)]; 489 while (tp->bs_nxt) 490 if (nlen == tp->bs_nbytes && 491 tp->bs_addr0 == i && 492 tp->bs_addr1 == j && 493 tp->bs_addr2 == k && 494 memcmp((const char *)bs, (const char *)(tp->bs_bytes), nlen) == 0) 495 return tp; 496 else 497 tp = tp->bs_nxt; 498 499 tp->bs_addr0 = (u_short)i; 500 tp->bs_addr1 = (u_short)j; 501 tp->bs_addr2 = (u_short)k; 502 503 tp->bs_bytes = (u_char *) calloc(1, nlen); 504 if (tp->bs_bytes == NULL) 505 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 506 "%s: calloc", __func__); 507 508 memcpy(tp->bs_bytes, bs, nlen); 509 tp->bs_nbytes = nlen; 510 tp->bs_nxt = (struct bsnamemem *)calloc(1, sizeof(*tp)); 511 if (tp->bs_nxt == NULL) 512 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 513 "%s: calloc", __func__); 514 515 return tp; 516} 517 518/* Find the hash node that corresponds the NSAP 'nsap' */ 519 520static struct enamemem * 521lookup_nsap(netdissect_options *ndo, const u_char *nsap, 522 u_int nsap_length) 523{ 524 u_int i, j, k; 525 struct enamemem *tp; 526 const u_char *ensap; 527 528 if (nsap_length > 6) { 529 ensap = nsap + nsap_length - 6; 530 k = (ensap[0] << 8) | ensap[1]; 531 j = (ensap[2] << 8) | ensap[3]; 532 i = (ensap[4] << 8) | ensap[5]; 533 } 534 else 535 i = j = k = 0; 536 537 tp = &nsaptable[(i ^ j) & (HASHNAMESIZE-1)]; 538 while (tp->e_nxt) 539 if (nsap_length == tp->e_nsap[0] && 540 tp->e_addr0 == i && 541 tp->e_addr1 == j && 542 tp->e_addr2 == k && 543 memcmp((const char *)nsap, 544 (char *)&(tp->e_nsap[1]), nsap_length) == 0) 545 return tp; 546 else 547 tp = tp->e_nxt; 548 tp->e_addr0 = (u_short)i; 549 tp->e_addr1 = (u_short)j; 550 tp->e_addr2 = (u_short)k; 551 tp->e_nsap = (u_char *)malloc(nsap_length + 1); 552 if (tp->e_nsap == NULL) 553 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: malloc", __func__); 554 tp->e_nsap[0] = (u_char)nsap_length; /* guaranteed < ISONSAP_MAX_LENGTH */ 555 memcpy((char *)&tp->e_nsap[1], (const char *)nsap, nsap_length); 556 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 557 if (tp->e_nxt == NULL) 558 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); 559 560 return tp; 561} 562 563/* Find the hash node that corresponds the protoid 'pi'. */ 564 565static struct protoidmem * 566lookup_protoid(netdissect_options *ndo, const u_char *pi) 567{ 568 u_int i, j; 569 struct protoidmem *tp; 570 571 /* 5 octets won't be aligned */ 572 i = (((pi[0] << 8) + pi[1]) << 8) + pi[2]; 573 j = (pi[3] << 8) + pi[4]; 574 /* XXX should be endian-insensitive, but do big-endian testing XXX */ 575 576 tp = &protoidtable[(i ^ j) & (HASHNAMESIZE-1)]; 577 while (tp->p_nxt) 578 if (tp->p_oui == i && tp->p_proto == j) 579 return tp; 580 else 581 tp = tp->p_nxt; 582 tp->p_oui = i; 583 tp->p_proto = (u_short)j; 584 tp->p_nxt = (struct protoidmem *)calloc(1, sizeof(*tp)); 585 if (tp->p_nxt == NULL) 586 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); 587 588 return tp; 589} 590 591const char * 592etheraddr_string(netdissect_options *ndo, const uint8_t *ep) 593{ 594 int i; 595 char *cp; 596 struct enamemem *tp; 597 int oui; 598 char buf[BUFSIZE]; 599 600 tp = lookup_emem(ndo, ep); 601 if (tp->e_name) 602 return (tp->e_name); 603#ifdef USE_ETHER_NTOHOST 604 if (!ndo->ndo_nflag) { 605 char buf2[BUFSIZE]; 606 /* 607 * This is a non-const copy of ep for ether_ntohost(), which 608 * has its second argument non-const in OpenBSD. Also saves a 609 * type cast. 610 */ 611 struct ether_addr ea; 612 613 memcpy (&ea, ep, MAC_ADDR_LEN); 614 if (ether_ntohost(buf2, &ea) == 0) { 615 tp->e_name = strdup(buf2); 616 if (tp->e_name == NULL) 617 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 618 "%s: strdup(buf2)", __func__); 619 return (tp->e_name); 620 } 621 } 622#endif 623 cp = buf; 624 oui = EXTRACT_BE_U_3(ep); 625 cp = octet_to_hex(cp, *ep++); 626 for (i = 5; --i >= 0;) { 627 *cp++ = ':'; 628 cp = octet_to_hex(cp, *ep++); 629 } 630 631 if (!ndo->ndo_nflag) { 632 snprintf(cp, BUFSIZE - (2 + 5*3), " (oui %s)", 633 tok2str(oui_values, "Unknown", oui)); 634 } else 635 *cp = '\0'; 636 tp->e_name = strdup(buf); 637 if (tp->e_name == NULL) 638 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 639 "%s: strdup(buf)", __func__); 640 return (tp->e_name); 641} 642 643const char * 644le64addr_string(netdissect_options *ndo, const uint8_t *ep) 645{ 646 const unsigned int len = 8; 647 u_int i; 648 char *cp; 649 struct bsnamemem *tp; 650 char buf[BUFSIZE]; 651 652 tp = lookup_bytestring(ndo, ep, len); 653 if (tp->bs_name) 654 return (tp->bs_name); 655 656 cp = buf; 657 for (i = len; i > 0 ; --i) { 658 cp = octet_to_hex(cp, *(ep + i - 1)); 659 *cp++ = ':'; 660 } 661 cp --; 662 663 *cp = '\0'; 664 665 tp->bs_name = strdup(buf); 666 if (tp->bs_name == NULL) 667 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 668 "%s: strdup(buf)", __func__); 669 670 return (tp->bs_name); 671} 672 673const char * 674linkaddr_string(netdissect_options *ndo, const uint8_t *ep, 675 const unsigned int type, const unsigned int len) 676{ 677 u_int i; 678 char *cp; 679 struct bsnamemem *tp; 680 681 if (len == 0) 682 return ("<empty>"); 683 684 if (type == LINKADDR_ETHER && len == MAC_ADDR_LEN) 685 return (etheraddr_string(ndo, ep)); 686 687 if (type == LINKADDR_FRELAY) 688 return (q922_string(ndo, ep, len)); 689 690 tp = lookup_bytestring(ndo, ep, len); 691 if (tp->bs_name) 692 return (tp->bs_name); 693 694 tp->bs_name = cp = (char *)malloc(len*3); 695 if (tp->bs_name == NULL) 696 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 697 "%s: malloc", __func__); 698 cp = octet_to_hex(cp, *ep++); 699 for (i = len-1; i > 0 ; --i) { 700 *cp++ = ':'; 701 cp = octet_to_hex(cp, *ep++); 702 } 703 *cp = '\0'; 704 return (tp->bs_name); 705} 706 707#define ISONSAP_MAX_LENGTH 20 708const char * 709isonsap_string(netdissect_options *ndo, const uint8_t *nsap, 710 u_int nsap_length) 711{ 712 u_int nsap_idx; 713 char *cp; 714 struct enamemem *tp; 715 716 if (nsap_length < 1 || nsap_length > ISONSAP_MAX_LENGTH) 717 return ("isonsap_string: illegal length"); 718 719 tp = lookup_nsap(ndo, nsap, nsap_length); 720 if (tp->e_name) 721 return tp->e_name; 722 723 tp->e_name = cp = (char *)malloc(sizeof("xx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xx")); 724 if (cp == NULL) 725 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 726 "%s: malloc", __func__); 727 728 for (nsap_idx = 0; nsap_idx < nsap_length; nsap_idx++) { 729 cp = octet_to_hex(cp, *nsap++); 730 if (((nsap_idx & 1) == 0) && 731 (nsap_idx + 1 < nsap_length)) { 732 *cp++ = '.'; 733 } 734 } 735 *cp = '\0'; 736 return (tp->e_name); 737} 738 739const char * 740tcpport_string(netdissect_options *ndo, u_short port) 741{ 742 struct hnamemem *tp; 743 uint32_t i = port; 744 char buf[sizeof("00000")]; 745 746 for (tp = &tporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 747 if (tp->addr == i) 748 return (tp->name); 749 750 tp->addr = i; 751 tp->nxt = newhnamemem(ndo); 752 753 (void)snprintf(buf, sizeof(buf), "%u", i); 754 tp->name = strdup(buf); 755 if (tp->name == NULL) 756 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 757 "%s: strdup(buf)", __func__); 758 return (tp->name); 759} 760 761const char * 762udpport_string(netdissect_options *ndo, u_short port) 763{ 764 struct hnamemem *tp; 765 uint32_t i = port; 766 char buf[sizeof("00000")]; 767 768 for (tp = &uporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 769 if (tp->addr == i) 770 return (tp->name); 771 772 tp->addr = i; 773 tp->nxt = newhnamemem(ndo); 774 775 (void)snprintf(buf, sizeof(buf), "%u", i); 776 tp->name = strdup(buf); 777 if (tp->name == NULL) 778 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 779 "%s: strdup(buf)", __func__); 780 return (tp->name); 781} 782 783const char * 784ipxsap_string(netdissect_options *ndo, u_short port) 785{ 786 char *cp; 787 struct hnamemem *tp; 788 uint32_t i = port; 789 char buf[sizeof("0000")]; 790 791 for (tp = &ipxsaptable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 792 if (tp->addr == i) 793 return (tp->name); 794 795 tp->addr = i; 796 tp->nxt = newhnamemem(ndo); 797 798 cp = buf; 799 port = ntohs(port); 800 *cp++ = hex[port >> 12 & 0xf]; 801 *cp++ = hex[port >> 8 & 0xf]; 802 *cp++ = hex[port >> 4 & 0xf]; 803 *cp++ = hex[port & 0xf]; 804 *cp++ = '\0'; 805 tp->name = strdup(buf); 806 if (tp->name == NULL) 807 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 808 "%s: strdup(buf)", __func__); 809 return (tp->name); 810} 811 812static void 813init_servarray(netdissect_options *ndo) 814{ 815 struct servent *sv; 816 struct hnamemem *table; 817 int i; 818 char buf[sizeof("0000000000")]; 819 820 while ((sv = getservent()) != NULL) { 821 int port = ntohs(sv->s_port); 822 i = port & (HASHNAMESIZE-1); 823 if (strcmp(sv->s_proto, "tcp") == 0) 824 table = &tporttable[i]; 825 else if (strcmp(sv->s_proto, "udp") == 0) 826 table = &uporttable[i]; 827 else 828 continue; 829 830 while (table->name) 831 table = table->nxt; 832 if (ndo->ndo_nflag) { 833 (void)snprintf(buf, sizeof(buf), "%d", port); 834 table->name = strdup(buf); 835 } else 836 table->name = strdup(sv->s_name); 837 if (table->name == NULL) 838 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 839 "%s: strdup", __func__); 840 841 table->addr = port; 842 table->nxt = newhnamemem(ndo); 843 } 844 endservent(); 845} 846 847static const struct eproto { 848 const char *s; 849 u_short p; 850} eproto_db[] = { 851 { "aarp", ETHERTYPE_AARP }, 852 { "arp", ETHERTYPE_ARP }, 853 { "atalk", ETHERTYPE_ATALK }, 854 { "decnet", ETHERTYPE_DN }, 855 { "ip", ETHERTYPE_IP }, 856 { "ip6", ETHERTYPE_IPV6 }, 857 { "lat", ETHERTYPE_LAT }, 858 { "loopback", ETHERTYPE_LOOPBACK }, 859 { "mopdl", ETHERTYPE_MOPDL }, 860 { "moprc", ETHERTYPE_MOPRC }, 861 { "rarp", ETHERTYPE_REVARP }, 862 { "sca", ETHERTYPE_SCA }, 863 { (char *)0, 0 } 864}; 865 866static void 867init_eprotoarray(netdissect_options *ndo) 868{ 869 int i; 870 struct hnamemem *table; 871 872 for (i = 0; eproto_db[i].s; i++) { 873 int j = htons(eproto_db[i].p) & (HASHNAMESIZE-1); 874 table = &eprototable[j]; 875 while (table->name) 876 table = table->nxt; 877 table->name = eproto_db[i].s; 878 table->addr = htons(eproto_db[i].p); 879 table->nxt = newhnamemem(ndo); 880 } 881} 882 883static const struct protoidlist { 884 const u_char protoid[5]; 885 const char *name; 886} protoidlist[] = { 887 {{ 0x00, 0x00, 0x0c, 0x01, 0x07 }, "CiscoMLS" }, 888 {{ 0x00, 0x00, 0x0c, 0x20, 0x00 }, "CiscoCDP" }, 889 {{ 0x00, 0x00, 0x0c, 0x20, 0x01 }, "CiscoCGMP" }, 890 {{ 0x00, 0x00, 0x0c, 0x20, 0x03 }, "CiscoVTP" }, 891 {{ 0x00, 0xe0, 0x2b, 0x00, 0xbb }, "ExtremeEDP" }, 892 {{ 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } 893}; 894 895/* 896 * SNAP proto IDs with org code 0:0:0 are actually encapsulated Ethernet 897 * types. 898 */ 899static void 900init_protoidarray(netdissect_options *ndo) 901{ 902 int i; 903 struct protoidmem *tp; 904 const struct protoidlist *pl; 905 u_char protoid[5]; 906 907 protoid[0] = 0; 908 protoid[1] = 0; 909 protoid[2] = 0; 910 for (i = 0; eproto_db[i].s; i++) { 911 u_short etype = htons(eproto_db[i].p); 912 913 memcpy((char *)&protoid[3], (char *)&etype, 2); 914 tp = lookup_protoid(ndo, protoid); 915 tp->p_name = strdup(eproto_db[i].s); 916 if (tp->p_name == NULL) 917 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 918 "%s: strdup(eproto_db[i].s)", __func__); 919 } 920 /* Hardwire some SNAP proto ID names */ 921 for (pl = protoidlist; pl->name != NULL; ++pl) { 922 tp = lookup_protoid(ndo, pl->protoid); 923 /* Don't override existing name */ 924 if (tp->p_name != NULL) 925 continue; 926 927 tp->p_name = pl->name; 928 } 929} 930 931static const struct etherlist { 932 const nd_mac_addr addr; 933 const char *name; 934} etherlist[] = { 935 {{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, "Broadcast" }, 936 {{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } 937}; 938 939/* 940 * Initialize the ethers hash table. We take two different approaches 941 * depending on whether or not the system provides the ethers name 942 * service. If it does, we just wire in a few names at startup, 943 * and etheraddr_string() fills in the table on demand. If it doesn't, 944 * then we suck in the entire /etc/ethers file at startup. The idea 945 * is that parsing the local file will be fast, but spinning through 946 * all the ethers entries via NIS & next_etherent might be very slow. 947 * 948 * XXX pcap_next_etherent doesn't belong in the pcap interface, but 949 * since the pcap module already does name-to-address translation, 950 * it's already does most of the work for the ethernet address-to-name 951 * translation, so we just pcap_next_etherent as a convenience. 952 */ 953static void 954init_etherarray(netdissect_options *ndo) 955{ 956 const struct etherlist *el; 957 struct enamemem *tp; 958#ifdef USE_ETHER_NTOHOST 959 char name[256]; 960#else 961 struct pcap_etherent *ep; 962 FILE *fp; 963 964 /* Suck in entire ethers file */ 965 fp = fopen(PCAP_ETHERS_FILE, "r"); 966 if (fp != NULL) { 967 while ((ep = pcap_next_etherent(fp)) != NULL) { 968 tp = lookup_emem(ndo, ep->addr); 969 tp->e_name = strdup(ep->name); 970 if (tp->e_name == NULL) 971 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 972 "%s: strdup(ep->addr)", __func__); 973 } 974 (void)fclose(fp); 975 } 976#endif 977 978 /* Hardwire some ethernet names */ 979 for (el = etherlist; el->name != NULL; ++el) { 980 tp = lookup_emem(ndo, el->addr); 981 /* Don't override existing name */ 982 if (tp->e_name != NULL) 983 continue; 984 985#ifdef USE_ETHER_NTOHOST 986 /* 987 * Use YP/NIS version of name if available. 988 */ 989 /* Same workaround as in etheraddr_string(). */ 990 struct ether_addr ea; 991 memcpy (&ea, el->addr, MAC_ADDR_LEN); 992 if (ether_ntohost(name, &ea) == 0) { 993 tp->e_name = strdup(name); 994 if (tp->e_name == NULL) 995 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 996 "%s: strdup(name)", __func__); 997 continue; 998 } 999#endif 1000 tp->e_name = el->name; 1001 } 1002} 1003 1004static const struct ipxsap_ent { 1005 uint16_t v; 1006 const char *s; 1007} ipxsap_db[] = { 1008 { 0x0000, "Unknown" }, 1009 { 0x0001, "User" }, 1010 { 0x0002, "User Group" }, 1011 { 0x0003, "PrintQueue" }, 1012 { 0x0004, "FileServer" }, 1013 { 0x0005, "JobServer" }, 1014 { 0x0006, "Gateway" }, 1015 { 0x0007, "PrintServer" }, 1016 { 0x0008, "ArchiveQueue" }, 1017 { 0x0009, "ArchiveServer" }, 1018 { 0x000a, "JobQueue" }, 1019 { 0x000b, "Administration" }, 1020 { 0x000F, "Novell TI-RPC" }, 1021 { 0x0017, "Diagnostics" }, 1022 { 0x0020, "NetBIOS" }, 1023 { 0x0021, "NAS SNA Gateway" }, 1024 { 0x0023, "NACS AsyncGateway" }, 1025 { 0x0024, "RemoteBridge/RoutingService" }, 1026 { 0x0026, "BridgeServer" }, 1027 { 0x0027, "TCP/IP Gateway" }, 1028 { 0x0028, "Point-to-point X.25 BridgeServer" }, 1029 { 0x0029, "3270 Gateway" }, 1030 { 0x002a, "CHI Corp" }, 1031 { 0x002c, "PC Chalkboard" }, 1032 { 0x002d, "TimeSynchServer" }, 1033 { 0x002e, "ARCserve5.0/PalindromeBackup" }, 1034 { 0x0045, "DI3270 Gateway" }, 1035 { 0x0047, "AdvertisingPrintServer" }, 1036 { 0x004a, "NetBlazerModems" }, 1037 { 0x004b, "BtrieveVAP" }, 1038 { 0x004c, "NetwareSQL" }, 1039 { 0x004d, "XtreeNetwork" }, 1040 { 0x0050, "BtrieveVAP4.11" }, 1041 { 0x0052, "QuickLink" }, 1042 { 0x0053, "PrintQueueUser" }, 1043 { 0x0058, "Multipoint X.25 Router" }, 1044 { 0x0060, "STLB/NLM" }, 1045 { 0x0064, "ARCserve" }, 1046 { 0x0066, "ARCserve3.0" }, 1047 { 0x0072, "WAN CopyUtility" }, 1048 { 0x007a, "TES-NetwareVMS" }, 1049 { 0x0092, "WATCOM Debugger/EmeraldTapeBackupServer" }, 1050 { 0x0095, "DDA OBGYN" }, 1051 { 0x0098, "NetwareAccessServer" }, 1052 { 0x009a, "Netware for VMS II/NamedPipeServer" }, 1053 { 0x009b, "NetwareAccessServer" }, 1054 { 0x009e, "PortableNetwareServer/SunLinkNVT" }, 1055 { 0x00a1, "PowerchuteAPC UPS" }, 1056 { 0x00aa, "LAWserve" }, 1057 { 0x00ac, "CompaqIDA StatusMonitor" }, 1058 { 0x0100, "PIPE STAIL" }, 1059 { 0x0102, "LAN ProtectBindery" }, 1060 { 0x0103, "OracleDataBaseServer" }, 1061 { 0x0107, "Netware386/RSPX RemoteConsole" }, 1062 { 0x010f, "NovellSNA Gateway" }, 1063 { 0x0111, "TestServer" }, 1064 { 0x0112, "HP PrintServer" }, 1065 { 0x0114, "CSA MUX" }, 1066 { 0x0115, "CSA LCA" }, 1067 { 0x0116, "CSA CM" }, 1068 { 0x0117, "CSA SMA" }, 1069 { 0x0118, "CSA DBA" }, 1070 { 0x0119, "CSA NMA" }, 1071 { 0x011a, "CSA SSA" }, 1072 { 0x011b, "CSA STATUS" }, 1073 { 0x011e, "CSA APPC" }, 1074 { 0x0126, "SNA TEST SSA Profile" }, 1075 { 0x012a, "CSA TRACE" }, 1076 { 0x012b, "NetwareSAA" }, 1077 { 0x012e, "IKARUS VirusScan" }, 1078 { 0x0130, "CommunicationsExecutive" }, 1079 { 0x0133, "NNS DomainServer/NetwareNamingServicesDomain" }, 1080 { 0x0135, "NetwareNamingServicesProfile" }, 1081 { 0x0137, "Netware386 PrintQueue/NNS PrintQueue" }, 1082 { 0x0141, "LAN SpoolServer" }, 1083 { 0x0152, "IRMALAN Gateway" }, 1084 { 0x0154, "NamedPipeServer" }, 1085 { 0x0166, "NetWareManagement" }, 1086 { 0x0168, "Intel PICKIT CommServer/Intel CAS TalkServer" }, 1087 { 0x0173, "Compaq" }, 1088 { 0x0174, "Compaq SNMP Agent" }, 1089 { 0x0175, "Compaq" }, 1090 { 0x0180, "XTreeServer/XTreeTools" }, 1091 { 0x018A, "NASI ServicesBroadcastServer" }, 1092 { 0x01b0, "GARP Gateway" }, 1093 { 0x01b1, "Binfview" }, 1094 { 0x01bf, "IntelLanDeskManager" }, 1095 { 0x01ca, "AXTEC" }, 1096 { 0x01cb, "ShivaNetModem/E" }, 1097 { 0x01cc, "ShivaLanRover/E" }, 1098 { 0x01cd, "ShivaLanRover/T" }, 1099 { 0x01ce, "ShivaUniversal" }, 1100 { 0x01d8, "CastelleFAXPressServer" }, 1101 { 0x01da, "CastelleLANPressPrintServer" }, 1102 { 0x01dc, "CastelleFAX/Xerox7033 FaxServer/ExcelLanFax" }, 1103 { 0x01f0, "LEGATO" }, 1104 { 0x01f5, "LEGATO" }, 1105 { 0x0233, "NMS Agent/NetwareManagementAgent" }, 1106 { 0x0237, "NMS IPX Discovery/LANternReadWriteChannel" }, 1107 { 0x0238, "NMS IP Discovery/LANternTrapAlarmChannel" }, 1108 { 0x023a, "LANtern" }, 1109 { 0x023c, "MAVERICK" }, 1110 { 0x023f, "NovellSMDR" }, 1111 { 0x024e, "NetwareConnect" }, 1112 { 0x024f, "NASI ServerBroadcast Cisco" }, 1113 { 0x026a, "NMS ServiceConsole" }, 1114 { 0x026b, "TimeSynchronizationServer Netware 4.x" }, 1115 { 0x0278, "DirectoryServer Netware 4.x" }, 1116 { 0x027b, "NetwareManagementAgent" }, 1117 { 0x0280, "Novell File and Printer Sharing Service for PC" }, 1118 { 0x0304, "NovellSAA Gateway" }, 1119 { 0x0308, "COM/VERMED" }, 1120 { 0x030a, "GalacticommWorldgroupServer" }, 1121 { 0x030c, "IntelNetport2/HP JetDirect/HP Quicksilver" }, 1122 { 0x0320, "AttachmateGateway" }, 1123 { 0x0327, "MicrosoftDiagnostiocs" }, 1124 { 0x0328, "WATCOM SQL Server" }, 1125 { 0x0335, "MultiTechSystems MultisynchCommServer" }, 1126 { 0x0343, "Xylogics RemoteAccessServer/LANModem" }, 1127 { 0x0355, "ArcadaBackupExec" }, 1128 { 0x0358, "MSLCD1" }, 1129 { 0x0361, "NETINELO" }, 1130 { 0x037e, "Powerchute UPS Monitoring" }, 1131 { 0x037f, "ViruSafeNotify" }, 1132 { 0x0386, "HP Bridge" }, 1133 { 0x0387, "HP Hub" }, 1134 { 0x0394, "NetWare SAA Gateway" }, 1135 { 0x039b, "LotusNotes" }, 1136 { 0x03b7, "CertusAntiVirus" }, 1137 { 0x03c4, "ARCserve4.0" }, 1138 { 0x03c7, "LANspool3.5" }, 1139 { 0x03d7, "LexmarkPrinterServer" }, 1140 { 0x03d8, "LexmarkXLE PrinterServer" }, 1141 { 0x03dd, "BanyanENS NetwareClient" }, 1142 { 0x03de, "GuptaSequelBaseServer/NetWareSQL" }, 1143 { 0x03e1, "UnivelUnixware" }, 1144 { 0x03e4, "UnivelUnixware" }, 1145 { 0x03fc, "IntelNetport" }, 1146 { 0x03fd, "PrintServerQueue" }, 1147 { 0x040A, "ipnServer" }, 1148 { 0x040D, "LVERRMAN" }, 1149 { 0x040E, "LVLIC" }, 1150 { 0x0414, "NET Silicon (DPI)/Kyocera" }, 1151 { 0x0429, "SiteLockVirus" }, 1152 { 0x0432, "UFHELPR???" }, 1153 { 0x0433, "Synoptics281xAdvancedSNMPAgent" }, 1154 { 0x0444, "MicrosoftNT SNA Server" }, 1155 { 0x0448, "Oracle" }, 1156 { 0x044c, "ARCserve5.01" }, 1157 { 0x0457, "CanonGP55" }, 1158 { 0x045a, "QMS Printers" }, 1159 { 0x045b, "DellSCSI Array" }, 1160 { 0x0491, "NetBlazerModems" }, 1161 { 0x04ac, "OnTimeScheduler" }, 1162 { 0x04b0, "CD-Net" }, 1163 { 0x0513, "EmulexNQA" }, 1164 { 0x0520, "SiteLockChecks" }, 1165 { 0x0529, "SiteLockChecks" }, 1166 { 0x052d, "CitrixOS2 AppServer" }, 1167 { 0x0535, "Tektronix" }, 1168 { 0x0536, "Milan" }, 1169 { 0x055d, "Attachmate SNA gateway" }, 1170 { 0x056b, "IBM8235 ModemServer" }, 1171 { 0x056c, "ShivaLanRover/E PLUS" }, 1172 { 0x056d, "ShivaLanRover/T PLUS" }, 1173 { 0x0580, "McAfeeNetShield" }, 1174 { 0x05B8, "NLM to workstation communication (Revelation Software)" }, 1175 { 0x05BA, "CompatibleSystemsRouters" }, 1176 { 0x05BE, "CheyenneHierarchicalStorageManager" }, 1177 { 0x0606, "JCWatermarkImaging" }, 1178 { 0x060c, "AXISNetworkPrinter" }, 1179 { 0x0610, "AdaptecSCSIManagement" }, 1180 { 0x0621, "IBM AntiVirus" }, 1181 { 0x0640, "Windows95 RemoteRegistryService" }, 1182 { 0x064e, "MicrosoftIIS" }, 1183 { 0x067b, "Microsoft Win95/98 File and Print Sharing for NetWare" }, 1184 { 0x067c, "Microsoft Win95/98 File and Print Sharing for NetWare" }, 1185 { 0x076C, "Xerox" }, 1186 { 0x079b, "ShivaLanRover/E 115" }, 1187 { 0x079c, "ShivaLanRover/T 115" }, 1188 { 0x07B4, "CubixWorldDesk" }, 1189 { 0x07c2, "Quarterdeck IWare Connect V2.x NLM" }, 1190 { 0x07c1, "Quarterdeck IWare Connect V3.x NLM" }, 1191 { 0x0810, "ELAN License Server Demo" }, 1192 { 0x0824, "ShivaLanRoverAccessSwitch/E" }, 1193 { 0x086a, "ISSC Collector" }, 1194 { 0x087f, "ISSC DAS AgentAIX" }, 1195 { 0x0880, "Intel Netport PRO" }, 1196 { 0x0881, "Intel Netport PRO" }, 1197 { 0x0b29, "SiteLock" }, 1198 { 0x0c29, "SiteLockApplications" }, 1199 { 0x0c2c, "LicensingServer" }, 1200 { 0x2101, "PerformanceTechnologyInstantInternet" }, 1201 { 0x2380, "LAI SiteLock" }, 1202 { 0x238c, "MeetingMaker" }, 1203 { 0x4808, "SiteLockServer/SiteLockMetering" }, 1204 { 0x5555, "SiteLockUser" }, 1205 { 0x6312, "Tapeware" }, 1206 { 0x6f00, "RabbitGateway" }, 1207 { 0x7703, "MODEM" }, 1208 { 0x8002, "NetPortPrinters" }, 1209 { 0x8008, "WordPerfectNetworkVersion" }, 1210 { 0x85BE, "Cisco EIGRP" }, 1211 { 0x8888, "WordPerfectNetworkVersion/QuickNetworkManagement" }, 1212 { 0x9000, "McAfeeNetShield" }, 1213 { 0x9604, "CSA-NT_MON" }, 1214 { 0xb6a8, "OceanIsleReachoutRemoteControl" }, 1215 { 0xf11f, "SiteLockMetering" }, 1216 { 0xf1ff, "SiteLock" }, 1217 { 0xf503, "Microsoft SQL Server" }, 1218 { 0xF905, "IBM TimeAndPlace" }, 1219 { 0xfbfb, "TopCallIII FaxServer" }, 1220 { 0xffff, "AnyService/Wildcard" }, 1221 { 0, (char *)0 } 1222}; 1223 1224static void 1225init_ipxsaparray(netdissect_options *ndo) 1226{ 1227 int i; 1228 struct hnamemem *table; 1229 1230 for (i = 0; ipxsap_db[i].s != NULL; i++) { 1231 u_int j = htons(ipxsap_db[i].v) & (HASHNAMESIZE-1); 1232 table = &ipxsaptable[j]; 1233 while (table->name) 1234 table = table->nxt; 1235 table->name = ipxsap_db[i].s; 1236 table->addr = htons(ipxsap_db[i].v); 1237 table->nxt = newhnamemem(ndo); 1238 } 1239} 1240 1241/* 1242 * Initialize the address to name translation machinery. We map all 1243 * non-local IP addresses to numeric addresses if ndo->ndo_fflag is true 1244 * (i.e., to prevent blocking on the nameserver). localnet is the IP address 1245 * of the local network. mask is its subnet mask. 1246 */ 1247void 1248init_addrtoname(netdissect_options *ndo, uint32_t localnet, uint32_t mask) 1249{ 1250 if (ndo->ndo_fflag) { 1251 f_localnet = localnet; 1252 f_netmask = mask; 1253 } 1254 if (ndo->ndo_nflag) 1255 /* 1256 * Simplest way to suppress names. 1257 */ 1258 return; 1259 1260 init_etherarray(ndo); 1261 init_servarray(ndo); 1262 init_eprotoarray(ndo); 1263 init_protoidarray(ndo); 1264 init_ipxsaparray(ndo); 1265} 1266 1267const char * 1268dnaddr_string(netdissect_options *ndo, u_short dnaddr) 1269{ 1270 struct hnamemem *tp; 1271 1272 for (tp = &dnaddrtable[dnaddr & (HASHNAMESIZE-1)]; tp->nxt != NULL; 1273 tp = tp->nxt) 1274 if (tp->addr == dnaddr) 1275 return (tp->name); 1276 1277 tp->addr = dnaddr; 1278 tp->nxt = newhnamemem(ndo); 1279 tp->name = dnnum_string(ndo, dnaddr); 1280 1281 return(tp->name); 1282} 1283 1284/* Return a zero'ed hnamemem struct and cuts down on calloc() overhead */ 1285struct hnamemem * 1286newhnamemem(netdissect_options *ndo) 1287{ 1288 struct hnamemem *p; 1289 static struct hnamemem *ptr = NULL; 1290 static u_int num = 0; 1291 1292 if (num == 0) { 1293 num = 64; 1294 ptr = (struct hnamemem *)calloc(num, sizeof (*ptr)); 1295 if (ptr == NULL) 1296 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 1297 "%s: calloc", __func__); 1298 } 1299 --num; 1300 p = ptr++; 1301 return (p); 1302} 1303 1304/* Return a zero'ed h6namemem struct and cuts down on calloc() overhead */ 1305struct h6namemem * 1306newh6namemem(netdissect_options *ndo) 1307{ 1308 struct h6namemem *p; 1309 static struct h6namemem *ptr = NULL; 1310 static u_int num = 0; 1311 1312 if (num == 0) { 1313 num = 64; 1314 ptr = (struct h6namemem *)calloc(num, sizeof (*ptr)); 1315 if (ptr == NULL) 1316 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 1317 "%s: calloc", __func__); 1318 } 1319 --num; 1320 p = ptr++; 1321 return (p); 1322} 1323 1324/* Represent TCI part of the 802.1Q 4-octet tag as text. */ 1325const char * 1326ieee8021q_tci_string(const uint16_t tci) 1327{ 1328 static char buf[128]; 1329 snprintf(buf, sizeof(buf), "vlan %u, p %u%s", 1330 tci & 0xfff, 1331 tci >> 13, 1332 (tci & 0x1000) ? ", DEI" : ""); 1333 return buf; 1334} 1335