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 1.13 2024/09/02 16:15:29 christos Exp $"); 27 #endif 28 29 #include <config.h> 30 31 #ifdef HAVE_CASPER 32 #include <libcasper.h> 33 #include <casper/cap_dns.h> 34 #endif /* HAVE_CASPER */ 35 36 #include "netdissect-stdinc.h" 37 38 #ifdef USE_ETHER_NTOHOST 39 #if defined(NET_ETHERNET_H_DECLARES_ETHER_NTOHOST) 40 /* 41 * OK, just include <net/ethernet.h>. 42 */ 43 #include <net/ethernet.h> 44 #elif defined(NETINET_ETHER_H_DECLARES_ETHER_NTOHOST) 45 /* 46 * OK, just include <netinet/ether.h> 47 */ 48 #include <netinet/ether.h> 49 #elif defined(SYS_ETHERNET_H_DECLARES_ETHER_NTOHOST) 50 /* 51 * OK, just include <sys/ethernet.h> 52 */ 53 #include <sys/ethernet.h> 54 #elif defined(ARPA_INET_H_DECLARES_ETHER_NTOHOST) 55 /* 56 * OK, just include <arpa/inet.h> 57 */ 58 #include <arpa/inet.h> 59 #elif defined(NETINET_IF_ETHER_H_DECLARES_ETHER_NTOHOST) 60 /* 61 * OK, include <netinet/if_ether.h>, after all the other stuff we 62 * need to include or define for its benefit. 63 */ 64 #define NEED_NETINET_IF_ETHER_H 65 #else 66 /* 67 * We'll have to declare it ourselves. 68 * If <netinet/if_ether.h> defines struct ether_addr, include 69 * it. Otherwise, define it ourselves. 70 */ 71 #ifdef HAVE_STRUCT_ETHER_ADDR 72 #define NEED_NETINET_IF_ETHER_H 73 #else /* HAVE_STRUCT_ETHER_ADDR */ 74 struct ether_addr { 75 /* Beware FreeBSD calls this "octet". */ 76 unsigned char ether_addr_octet[MAC_ADDR_LEN]; 77 }; 78 #endif /* HAVE_STRUCT_ETHER_ADDR */ 79 #endif /* what declares ether_ntohost() */ 80 81 #ifdef NEED_NETINET_IF_ETHER_H 82 /* 83 * Include diag-control.h before <net/if.h>, which too defines a macro 84 * named ND_UNREACHABLE. 85 */ 86 #include "diag-control.h" 87 #include <net/if.h> /* Needed on some platforms */ 88 #include <netinet/in.h> /* Needed on some platforms */ 89 #include <netinet/if_ether.h> 90 #endif /* NEED_NETINET_IF_ETHER_H */ 91 92 #ifndef HAVE_DECL_ETHER_NTOHOST 93 /* 94 * No header declares it, so declare it ourselves. 95 */ 96 extern int ether_ntohost(char *, const struct ether_addr *); 97 #endif /* !defined(HAVE_DECL_ETHER_NTOHOST) */ 98 #endif /* USE_ETHER_NTOHOST */ 99 100 #include <pcap.h> 101 #include <pcap-namedb.h> 102 #ifndef HAVE_GETSERVENT 103 #include <getservent.h> 104 #endif 105 #include <signal.h> 106 #include <stdio.h> 107 #include <string.h> 108 #include <stdlib.h> 109 110 #include "netdissect.h" 111 #include "addrtoname.h" 112 #include "addrtostr.h" 113 #include "ethertype.h" 114 #include "llc.h" 115 #include "extract.h" 116 #include "oui.h" 117 118 /* 119 * hash tables for whatever-to-name translations 120 * 121 * ndo_error() called on strdup(3) failure with S_ERR_ND_MEM_ALLOC status 122 */ 123 124 #define HASHNAMESIZE 4096 125 126 struct hnamemem { 127 uint32_t addr; 128 const char *name; 129 struct hnamemem *nxt; 130 }; 131 132 static struct hnamemem hnametable[HASHNAMESIZE]; 133 static struct hnamemem tporttable[HASHNAMESIZE]; 134 static struct hnamemem uporttable[HASHNAMESIZE]; 135 static struct hnamemem eprototable[HASHNAMESIZE]; 136 static struct hnamemem dnaddrtable[HASHNAMESIZE]; 137 static struct hnamemem ipxsaptable[HASHNAMESIZE]; 138 139 #ifdef _WIN32 140 /* 141 * fake gethostbyaddr for Win2k/XP 142 * gethostbyaddr() returns incorrect value when AF_INET6 is passed 143 * to 3rd argument. 144 * 145 * h_name in struct hostent is only valid. 146 */ 147 static struct hostent * 148 win32_gethostbyaddr(const char *addr, int len, int type) 149 { 150 static struct hostent host; 151 static char hostbuf[NI_MAXHOST]; 152 char hname[NI_MAXHOST]; 153 struct sockaddr_in6 addr6; 154 155 host.h_name = hostbuf; 156 switch (type) { 157 case AF_INET: 158 return gethostbyaddr(addr, len, type); 159 break; 160 case AF_INET6: 161 memset(&addr6, 0, sizeof(addr6)); 162 addr6.sin6_family = AF_INET6; 163 memcpy(&addr6.sin6_addr, addr, len); 164 if (getnameinfo((struct sockaddr *)&addr6, sizeof(addr6), 165 hname, sizeof(hname), NULL, 0, 0)) { 166 return NULL; 167 } else { 168 strlcpy(host.h_name, hname, NI_MAXHOST); 169 return &host; 170 } 171 break; 172 default: 173 return NULL; 174 } 175 } 176 #define gethostbyaddr win32_gethostbyaddr 177 #endif /* _WIN32 */ 178 179 struct h6namemem { 180 nd_ipv6 addr; 181 char *name; 182 struct h6namemem *nxt; 183 }; 184 185 static struct h6namemem h6nametable[HASHNAMESIZE]; 186 187 struct enamemem { 188 u_short e_addr0; 189 u_short e_addr1; 190 u_short e_addr2; 191 const char *e_name; 192 u_char *e_nsap; /* used only for nsaptable[] */ 193 struct enamemem *e_nxt; 194 }; 195 196 static struct enamemem enametable[HASHNAMESIZE]; 197 static struct enamemem nsaptable[HASHNAMESIZE]; 198 199 struct bsnamemem { 200 u_short bs_addr0; 201 u_short bs_addr1; 202 u_short bs_addr2; 203 const char *bs_name; 204 u_char *bs_bytes; 205 unsigned int bs_nbytes; 206 struct bsnamemem *bs_nxt; 207 }; 208 209 static struct bsnamemem bytestringtable[HASHNAMESIZE]; 210 211 struct protoidmem { 212 uint32_t p_oui; 213 u_short p_proto; 214 const char *p_name; 215 struct protoidmem *p_nxt; 216 }; 217 218 static struct protoidmem protoidtable[HASHNAMESIZE]; 219 220 /* 221 * A faster replacement for inet_ntoa(). 222 */ 223 const char * 224 intoa(uint32_t addr) 225 { 226 char *cp; 227 u_int byte; 228 int n; 229 static char buf[sizeof(".xxx.xxx.xxx.xxx")]; 230 231 addr = ntohl(addr); 232 cp = buf + sizeof(buf); 233 *--cp = '\0'; 234 235 n = 4; 236 do { 237 byte = addr & 0xff; 238 *--cp = (char)(byte % 10) + '0'; 239 byte /= 10; 240 if (byte > 0) { 241 *--cp = (char)(byte % 10) + '0'; 242 byte /= 10; 243 if (byte > 0) 244 *--cp = (char)byte + '0'; 245 } 246 *--cp = '.'; 247 addr >>= 8; 248 } while (--n > 0); 249 250 return cp + 1; 251 } 252 253 static uint32_t f_netmask; 254 static uint32_t f_localnet; 255 #ifdef HAVE_CASPER 256 cap_channel_t *capdns; 257 #endif 258 259 /* 260 * Return a name for the IP address pointed to by ap. This address 261 * is assumed to be in network byte order. 262 * 263 * NOTE: ap is *NOT* necessarily part of the packet data, so you 264 * *CANNOT* use the ND_TCHECK_* or ND_TTEST_* macros on it. Furthermore, 265 * even in cases where it *is* part of the packet data, the caller 266 * would still have to check for a null return value, even if it's 267 * just printing the return value with "%s" - not all versions of 268 * printf print "(null)" with "%s" and a null pointer, some of them 269 * don't check for a null pointer and crash in that case. 270 * 271 * The callers of this routine should, before handing this routine 272 * a pointer to packet data, be sure that the data is present in 273 * the packet buffer. They should probably do those checks anyway, 274 * as other data at that layer might not be IP addresses, and it 275 * also needs to check whether they're present in the packet buffer. 276 */ 277 const char * 278 ipaddr_string(netdissect_options *ndo, const u_char *ap) 279 { 280 struct hostent *hp; 281 uint32_t addr; 282 struct hnamemem *p; 283 284 memcpy(&addr, ap, sizeof(addr)); 285 p = &hnametable[addr & (HASHNAMESIZE-1)]; 286 for (; p->nxt; p = p->nxt) { 287 if (p->addr == addr) 288 return (p->name); 289 } 290 p->addr = addr; 291 p->nxt = newhnamemem(ndo); 292 293 /* 294 * Print names unless: 295 * (1) -n was given. 296 * (2) Address is foreign and -f was given. (If -f was not 297 * given, f_netmask and f_localnet are 0 and the test 298 * evaluates to true) 299 */ 300 if (!ndo->ndo_nflag && 301 (addr & f_netmask) == f_localnet) { 302 #ifdef HAVE_CASPER 303 if (capdns != NULL) { 304 hp = cap_gethostbyaddr(capdns, (char *)&addr, 4, 305 AF_INET); 306 } else 307 #endif 308 hp = gethostbyaddr((char *)&addr, 4, AF_INET); 309 if (hp) { 310 char *dotp; 311 312 p->name = strdup(hp->h_name); 313 if (p->name == NULL) 314 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 315 "%s: strdup(hp->h_name)", __func__); 316 if (ndo->ndo_Nflag) { 317 /* Remove domain qualifications */ 318 dotp = strchr(p->name, '.'); 319 if (dotp) 320 *dotp = '\0'; 321 } 322 return (p->name); 323 } 324 } 325 p->name = strdup(intoa(addr)); 326 if (p->name == NULL) 327 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 328 "%s: strdup(intoa(addr))", __func__); 329 return (p->name); 330 } 331 332 /* 333 * Return a name for the IP6 address pointed to by ap. This address 334 * is assumed to be in network byte order. 335 */ 336 const char * 337 ip6addr_string(netdissect_options *ndo, const u_char *ap) 338 { 339 struct hostent *hp; 340 union { 341 nd_ipv6 addr; 342 struct for_hash_addr { 343 char fill[14]; 344 uint16_t d; 345 } addra; 346 } addr; 347 struct h6namemem *p; 348 const char *cp; 349 char ntop_buf[INET6_ADDRSTRLEN]; 350 351 memcpy(&addr, ap, sizeof(addr)); 352 p = &h6nametable[addr.addra.d & (HASHNAMESIZE-1)]; 353 for (; p->nxt; p = p->nxt) { 354 if (memcmp(&p->addr, &addr, sizeof(addr)) == 0) 355 return (p->name); 356 } 357 memcpy(p->addr, addr.addr, sizeof(nd_ipv6)); 358 p->nxt = newh6namemem(ndo); 359 360 /* 361 * Do not print names if -n was given. 362 */ 363 if (!ndo->ndo_nflag) { 364 #ifdef HAVE_CASPER 365 if (capdns != NULL) { 366 hp = cap_gethostbyaddr(capdns, (char *)&addr, 367 sizeof(addr), AF_INET6); 368 } else 369 #endif 370 hp = gethostbyaddr((char *)&addr, sizeof(addr), 371 AF_INET6); 372 if (hp) { 373 char *dotp; 374 375 p->name = strdup(hp->h_name); 376 if (p->name == NULL) 377 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 378 "%s: strdup(hp->h_name)", __func__); 379 if (ndo->ndo_Nflag) { 380 /* Remove domain qualifications */ 381 dotp = strchr(p->name, '.'); 382 if (dotp) 383 *dotp = '\0'; 384 } 385 return (p->name); 386 } 387 } 388 cp = addrtostr6(ap, ntop_buf, sizeof(ntop_buf)); 389 p->name = strdup(cp); 390 if (p->name == NULL) 391 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 392 "%s: strdup(cp)", __func__); 393 return (p->name); 394 } 395 396 static const char hex[16] = { 397 '0', '1', '2', '3', '4', '5', '6', '7', 398 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' 399 }; 400 401 /* 402 * Convert an octet to two hex digits. 403 * 404 * Coverity appears either: 405 * 406 * not to believe the C standard when it asserts that a uint8_t is 407 * exactly 8 bits in size; 408 * 409 * not to believe that an unsigned type of exactly 8 bits has a value 410 * in the range of 0 to 255; 411 * 412 * not to believe that, for a range of unsigned values, if you shift 413 * one of those values right by 4 bits, the maximum result value is 414 * the maximum value shifted right by 4 bits, with no stray 1's shifted 415 * in; 416 * 417 * not to believe that 255 >> 4 is 15; 418 * 419 * so it gets upset that we're taking a "tainted" unsigned value, shifting 420 * it right 4 bits, and using it as an index into a 16-element array. 421 * 422 * So we do a stupid pointless masking of the result of the shift with 423 * 0xf, to hammer the point home to Coverity. 424 */ 425 static inline char * 426 octet_to_hex(char *cp, uint8_t octet) 427 { 428 *cp++ = hex[(octet >> 4) & 0xf]; 429 *cp++ = hex[(octet >> 0) & 0xf]; 430 return (cp); 431 } 432 433 /* Find the hash node that corresponds the ether address 'ep' */ 434 435 static struct enamemem * 436 lookup_emem(netdissect_options *ndo, const u_char *ep) 437 { 438 u_int i, j, k; 439 struct enamemem *tp; 440 441 k = (ep[0] << 8) | ep[1]; 442 j = (ep[2] << 8) | ep[3]; 443 i = (ep[4] << 8) | ep[5]; 444 445 tp = &enametable[(i ^ j) & (HASHNAMESIZE-1)]; 446 while (tp->e_nxt) 447 if (tp->e_addr0 == i && 448 tp->e_addr1 == j && 449 tp->e_addr2 == k) 450 return tp; 451 else 452 tp = tp->e_nxt; 453 tp->e_addr0 = (u_short)i; 454 tp->e_addr1 = (u_short)j; 455 tp->e_addr2 = (u_short)k; 456 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 457 if (tp->e_nxt == NULL) 458 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); 459 460 return tp; 461 } 462 463 /* 464 * Find the hash node that corresponds to the bytestring 'bs' 465 * with length 'nlen' 466 */ 467 468 static struct bsnamemem * 469 lookup_bytestring(netdissect_options *ndo, const u_char *bs, 470 const unsigned int nlen) 471 { 472 struct bsnamemem *tp; 473 u_int i, j, k; 474 475 if (nlen >= 6) { 476 k = (bs[0] << 8) | bs[1]; 477 j = (bs[2] << 8) | bs[3]; 478 i = (bs[4] << 8) | bs[5]; 479 } else if (nlen >= 4) { 480 k = (bs[0] << 8) | bs[1]; 481 j = (bs[2] << 8) | bs[3]; 482 i = 0; 483 } else 484 i = j = k = 0; 485 486 tp = &bytestringtable[(i ^ j) & (HASHNAMESIZE-1)]; 487 while (tp->bs_nxt) 488 if (nlen == tp->bs_nbytes && 489 tp->bs_addr0 == i && 490 tp->bs_addr1 == j && 491 tp->bs_addr2 == k && 492 memcmp((const char *)bs, (const char *)(tp->bs_bytes), nlen) == 0) 493 return tp; 494 else 495 tp = tp->bs_nxt; 496 497 tp->bs_addr0 = (u_short)i; 498 tp->bs_addr1 = (u_short)j; 499 tp->bs_addr2 = (u_short)k; 500 501 tp->bs_bytes = (u_char *) calloc(1, nlen); 502 if (tp->bs_bytes == NULL) 503 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 504 "%s: calloc", __func__); 505 506 memcpy(tp->bs_bytes, bs, nlen); 507 tp->bs_nbytes = nlen; 508 tp->bs_nxt = (struct bsnamemem *)calloc(1, sizeof(*tp)); 509 if (tp->bs_nxt == NULL) 510 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 511 "%s: calloc", __func__); 512 513 return tp; 514 } 515 516 /* Find the hash node that corresponds the NSAP 'nsap' */ 517 518 static struct enamemem * 519 lookup_nsap(netdissect_options *ndo, const u_char *nsap, 520 u_int nsap_length) 521 { 522 u_int i, j, k; 523 struct enamemem *tp; 524 const u_char *ensap; 525 526 if (nsap_length > 6) { 527 ensap = nsap + nsap_length - 6; 528 k = (ensap[0] << 8) | ensap[1]; 529 j = (ensap[2] << 8) | ensap[3]; 530 i = (ensap[4] << 8) | ensap[5]; 531 } else 532 i = j = k = 0; 533 534 tp = &nsaptable[(i ^ j) & (HASHNAMESIZE-1)]; 535 while (tp->e_nxt) 536 if (nsap_length == tp->e_nsap[0] && 537 tp->e_addr0 == i && 538 tp->e_addr1 == j && 539 tp->e_addr2 == k && 540 memcmp((const char *)nsap, 541 (char *)&(tp->e_nsap[1]), nsap_length) == 0) 542 return tp; 543 else 544 tp = tp->e_nxt; 545 tp->e_addr0 = (u_short)i; 546 tp->e_addr1 = (u_short)j; 547 tp->e_addr2 = (u_short)k; 548 tp->e_nsap = (u_char *)malloc(nsap_length + 1); 549 if (tp->e_nsap == NULL) 550 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: malloc", __func__); 551 tp->e_nsap[0] = (u_char)nsap_length; /* guaranteed < ISONSAP_MAX_LENGTH */ 552 memcpy((char *)&tp->e_nsap[1], (const char *)nsap, nsap_length); 553 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp)); 554 if (tp->e_nxt == NULL) 555 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); 556 557 return tp; 558 } 559 560 /* Find the hash node that corresponds the protoid 'pi'. */ 561 562 static struct protoidmem * 563 lookup_protoid(netdissect_options *ndo, const u_char *pi) 564 { 565 u_int i, j; 566 struct protoidmem *tp; 567 568 /* 5 octets won't be aligned */ 569 i = (((pi[0] << 8) + pi[1]) << 8) + pi[2]; 570 j = (pi[3] << 8) + pi[4]; 571 /* XXX should be endian-insensitive, but do big-endian testing XXX */ 572 573 tp = &protoidtable[(i ^ j) & (HASHNAMESIZE-1)]; 574 while (tp->p_nxt) 575 if (tp->p_oui == i && tp->p_proto == j) 576 return tp; 577 else 578 tp = tp->p_nxt; 579 tp->p_oui = i; 580 tp->p_proto = (u_short)j; 581 tp->p_nxt = (struct protoidmem *)calloc(1, sizeof(*tp)); 582 if (tp->p_nxt == NULL) 583 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "%s: calloc", __func__); 584 585 return tp; 586 } 587 588 const char * 589 etheraddr_string(netdissect_options *ndo, const uint8_t *ep) 590 { 591 int i; 592 char *cp; 593 struct enamemem *tp; 594 int oui; 595 char buf[BUFSIZE]; 596 597 tp = lookup_emem(ndo, ep); 598 if (tp->e_name) 599 return (tp->e_name); 600 #ifdef USE_ETHER_NTOHOST 601 if (!ndo->ndo_nflag) { 602 char buf2[BUFSIZE]; 603 /* 604 * This is a non-const copy of ep for ether_ntohost(), which 605 * has its second argument non-const in OpenBSD. Also saves a 606 * type cast. 607 */ 608 struct ether_addr ea; 609 610 memcpy (&ea, ep, MAC_ADDR_LEN); 611 if (ether_ntohost(buf2, &ea) == 0) { 612 tp->e_name = strdup(buf2); 613 if (tp->e_name == NULL) 614 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 615 "%s: strdup(buf2)", __func__); 616 return (tp->e_name); 617 } 618 } 619 #endif 620 cp = buf; 621 oui = EXTRACT_BE_U_3(ep); 622 cp = octet_to_hex(cp, *ep++); 623 for (i = 5; --i >= 0;) { 624 *cp++ = ':'; 625 cp = octet_to_hex(cp, *ep++); 626 } 627 628 if (!ndo->ndo_nflag) { 629 snprintf(cp, BUFSIZE - (2 + 5*3), " (oui %s)", 630 tok2str(oui_values, "Unknown", oui)); 631 } else 632 *cp = '\0'; 633 tp->e_name = strdup(buf); 634 if (tp->e_name == NULL) 635 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 636 "%s: strdup(buf)", __func__); 637 return (tp->e_name); 638 } 639 640 const char * 641 le64addr_string(netdissect_options *ndo, const uint8_t *ep) 642 { 643 const unsigned int len = 8; 644 u_int i; 645 char *cp; 646 struct bsnamemem *tp; 647 char buf[BUFSIZE]; 648 649 tp = lookup_bytestring(ndo, ep, len); 650 if (tp->bs_name) 651 return (tp->bs_name); 652 653 cp = buf; 654 for (i = len; i > 0 ; --i) { 655 cp = octet_to_hex(cp, *(ep + i - 1)); 656 *cp++ = ':'; 657 } 658 cp --; 659 660 *cp = '\0'; 661 662 tp->bs_name = strdup(buf); 663 if (tp->bs_name == NULL) 664 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 665 "%s: strdup(buf)", __func__); 666 667 return (tp->bs_name); 668 } 669 670 const char * 671 linkaddr_string(netdissect_options *ndo, const uint8_t *ep, 672 const unsigned int type, const unsigned int len) 673 { 674 u_int i; 675 char *cp; 676 struct bsnamemem *tp; 677 678 if (len == 0) 679 return ("<empty>"); 680 681 if (type == LINKADDR_ETHER && len == MAC_ADDR_LEN) 682 return (etheraddr_string(ndo, ep)); 683 684 if (type == LINKADDR_FRELAY) 685 return (q922_string(ndo, ep, len)); 686 687 tp = lookup_bytestring(ndo, ep, len); 688 if (tp->bs_name) 689 return (tp->bs_name); 690 691 tp->bs_name = cp = (char *)malloc(len*3); 692 if (tp->bs_name == NULL) 693 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 694 "%s: malloc", __func__); 695 cp = octet_to_hex(cp, *ep++); 696 for (i = len-1; i > 0 ; --i) { 697 *cp++ = ':'; 698 cp = octet_to_hex(cp, *ep++); 699 } 700 *cp = '\0'; 701 return (tp->bs_name); 702 } 703 704 #define ISONSAP_MAX_LENGTH 20 705 const char * 706 isonsap_string(netdissect_options *ndo, const uint8_t *nsap, 707 u_int nsap_length) 708 { 709 u_int nsap_idx; 710 char *cp; 711 struct enamemem *tp; 712 713 if (nsap_length < 1 || nsap_length > ISONSAP_MAX_LENGTH) 714 return ("isonsap_string: illegal length"); 715 716 tp = lookup_nsap(ndo, nsap, nsap_length); 717 if (tp->e_name) 718 return tp->e_name; 719 720 tp->e_name = cp = (char *)malloc(sizeof("xx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xx")); 721 if (cp == NULL) 722 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 723 "%s: malloc", __func__); 724 725 for (nsap_idx = 0; nsap_idx < nsap_length; nsap_idx++) { 726 cp = octet_to_hex(cp, *nsap++); 727 if (((nsap_idx & 1) == 0) && 728 (nsap_idx + 1 < nsap_length)) { 729 *cp++ = '.'; 730 } 731 } 732 *cp = '\0'; 733 return (tp->e_name); 734 } 735 736 const char * 737 tcpport_string(netdissect_options *ndo, u_short port) 738 { 739 struct hnamemem *tp; 740 uint32_t i = port; 741 char buf[sizeof("00000")]; 742 743 for (tp = &tporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 744 if (tp->addr == i) 745 return (tp->name); 746 747 tp->addr = i; 748 tp->nxt = newhnamemem(ndo); 749 750 (void)snprintf(buf, sizeof(buf), "%u", i); 751 tp->name = strdup(buf); 752 if (tp->name == NULL) 753 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 754 "%s: strdup(buf)", __func__); 755 return (tp->name); 756 } 757 758 const char * 759 udpport_string(netdissect_options *ndo, u_short port) 760 { 761 struct hnamemem *tp; 762 uint32_t i = port; 763 char buf[sizeof("00000")]; 764 765 for (tp = &uporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 766 if (tp->addr == i) 767 return (tp->name); 768 769 tp->addr = i; 770 tp->nxt = newhnamemem(ndo); 771 772 (void)snprintf(buf, sizeof(buf), "%u", i); 773 tp->name = strdup(buf); 774 if (tp->name == NULL) 775 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 776 "%s: strdup(buf)", __func__); 777 return (tp->name); 778 } 779 780 const char * 781 ipxsap_string(netdissect_options *ndo, u_short port) 782 { 783 char *cp; 784 struct hnamemem *tp; 785 uint32_t i = port; 786 char buf[sizeof("0000")]; 787 788 for (tp = &ipxsaptable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt) 789 if (tp->addr == i) 790 return (tp->name); 791 792 tp->addr = i; 793 tp->nxt = newhnamemem(ndo); 794 795 cp = buf; 796 port = ntohs(port); 797 *cp++ = hex[port >> 12 & 0xf]; 798 *cp++ = hex[port >> 8 & 0xf]; 799 *cp++ = hex[port >> 4 & 0xf]; 800 *cp++ = hex[port & 0xf]; 801 *cp++ = '\0'; 802 tp->name = strdup(buf); 803 if (tp->name == NULL) 804 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 805 "%s: strdup(buf)", __func__); 806 return (tp->name); 807 } 808 809 static void 810 init_servarray(netdissect_options *ndo) 811 { 812 struct servent *sv; 813 struct hnamemem *table; 814 int i; 815 char buf[sizeof("0000000000")]; 816 817 while ((sv = getservent()) != NULL) { 818 int port = ntohs(sv->s_port); 819 i = port & (HASHNAMESIZE-1); 820 if (strcmp(sv->s_proto, "tcp") == 0) 821 table = &tporttable[i]; 822 else if (strcmp(sv->s_proto, "udp") == 0) 823 table = &uporttable[i]; 824 else 825 continue; 826 827 while (table->name) 828 table = table->nxt; 829 if (ndo->ndo_nflag) { 830 (void)snprintf(buf, sizeof(buf), "%d", port); 831 table->name = strdup(buf); 832 } else 833 table->name = strdup(sv->s_name); 834 if (table->name == NULL) 835 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 836 "%s: strdup", __func__); 837 838 table->addr = port; 839 table->nxt = newhnamemem(ndo); 840 } 841 endservent(); 842 } 843 844 static const struct eproto { 845 const char *s; 846 u_short p; 847 } eproto_db[] = { 848 { "aarp", ETHERTYPE_AARP }, 849 { "arp", ETHERTYPE_ARP }, 850 { "atalk", ETHERTYPE_ATALK }, 851 { "decnet", ETHERTYPE_DN }, 852 { "ip", ETHERTYPE_IP }, 853 { "ip6", ETHERTYPE_IPV6 }, 854 { "lat", ETHERTYPE_LAT }, 855 { "loopback", ETHERTYPE_LOOPBACK }, 856 { "mopdl", ETHERTYPE_MOPDL }, 857 { "moprc", ETHERTYPE_MOPRC }, 858 { "rarp", ETHERTYPE_REVARP }, 859 { "sca", ETHERTYPE_SCA }, 860 { (char *)0, 0 } 861 }; 862 863 static void 864 init_eprotoarray(netdissect_options *ndo) 865 { 866 int i; 867 struct hnamemem *table; 868 869 for (i = 0; eproto_db[i].s; i++) { 870 int j = htons(eproto_db[i].p) & (HASHNAMESIZE-1); 871 table = &eprototable[j]; 872 while (table->name) 873 table = table->nxt; 874 table->name = eproto_db[i].s; 875 table->addr = htons(eproto_db[i].p); 876 table->nxt = newhnamemem(ndo); 877 } 878 } 879 880 static const struct protoidlist { 881 const u_char protoid[5]; 882 const char *name; 883 } protoidlist[] = { 884 {{ 0x00, 0x00, 0x0c, 0x01, 0x07 }, "CiscoMLS" }, 885 {{ 0x00, 0x00, 0x0c, 0x20, 0x00 }, "CiscoCDP" }, 886 {{ 0x00, 0x00, 0x0c, 0x20, 0x01 }, "CiscoCGMP" }, 887 {{ 0x00, 0x00, 0x0c, 0x20, 0x03 }, "CiscoVTP" }, 888 {{ 0x00, 0xe0, 0x2b, 0x00, 0xbb }, "ExtremeEDP" }, 889 {{ 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } 890 }; 891 892 /* 893 * SNAP proto IDs with org code 0:0:0 are actually encapsulated Ethernet 894 * types. 895 */ 896 static void 897 init_protoidarray(netdissect_options *ndo) 898 { 899 int i; 900 struct protoidmem *tp; 901 const struct protoidlist *pl; 902 u_char protoid[5]; 903 904 protoid[0] = 0; 905 protoid[1] = 0; 906 protoid[2] = 0; 907 for (i = 0; eproto_db[i].s; i++) { 908 u_short etype = htons(eproto_db[i].p); 909 910 memcpy((char *)&protoid[3], (char *)&etype, 2); 911 tp = lookup_protoid(ndo, protoid); 912 tp->p_name = strdup(eproto_db[i].s); 913 if (tp->p_name == NULL) 914 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 915 "%s: strdup(eproto_db[i].s)", __func__); 916 } 917 /* Hardwire some SNAP proto ID names */ 918 for (pl = protoidlist; pl->name != NULL; ++pl) { 919 tp = lookup_protoid(ndo, pl->protoid); 920 /* Don't override existing name */ 921 if (tp->p_name != NULL) 922 continue; 923 924 tp->p_name = pl->name; 925 } 926 } 927 928 static const struct etherlist { 929 const nd_mac_addr addr; 930 const char *name; 931 } etherlist[] = { 932 {{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, "Broadcast" }, 933 {{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL } 934 }; 935 936 /* 937 * Initialize the ethers hash table. We take two different approaches 938 * depending on whether or not the system provides the ethers name 939 * service. If it does, we just wire in a few names at startup, 940 * and etheraddr_string() fills in the table on demand. If it doesn't, 941 * then we suck in the entire /etc/ethers file at startup. The idea 942 * is that parsing the local file will be fast, but spinning through 943 * all the ethers entries via NIS & next_etherent might be very slow. 944 * 945 * XXX pcap_next_etherent doesn't belong in the pcap interface, but 946 * since the pcap module already does name-to-address translation, 947 * it's already does most of the work for the ethernet address-to-name 948 * translation, so we just pcap_next_etherent as a convenience. 949 */ 950 static void 951 init_etherarray(netdissect_options *ndo) 952 { 953 const struct etherlist *el; 954 struct enamemem *tp; 955 #ifdef USE_ETHER_NTOHOST 956 char name[256]; 957 #else 958 struct pcap_etherent *ep; 959 FILE *fp; 960 961 /* Suck in entire ethers file */ 962 fp = fopen(PCAP_ETHERS_FILE, "r"); 963 if (fp != NULL) { 964 while ((ep = pcap_next_etherent(fp)) != NULL) { 965 tp = lookup_emem(ndo, ep->addr); 966 tp->e_name = strdup(ep->name); 967 if (tp->e_name == NULL) 968 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 969 "%s: strdup(ep->addr)", __func__); 970 } 971 (void)fclose(fp); 972 } 973 #endif 974 975 /* Hardwire some ethernet names */ 976 for (el = etherlist; el->name != NULL; ++el) { 977 tp = lookup_emem(ndo, el->addr); 978 /* Don't override existing name */ 979 if (tp->e_name != NULL) 980 continue; 981 982 #ifdef USE_ETHER_NTOHOST 983 /* 984 * Use YP/NIS version of name if available. 985 */ 986 /* Same workaround as in etheraddr_string(). */ 987 struct ether_addr ea; 988 memcpy (&ea, el->addr, MAC_ADDR_LEN); 989 if (ether_ntohost(name, &ea) == 0) { 990 tp->e_name = strdup(name); 991 if (tp->e_name == NULL) 992 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 993 "%s: strdup(name)", __func__); 994 continue; 995 } 996 #endif 997 tp->e_name = el->name; 998 } 999 } 1000 1001 static const struct ipxsap_ent { 1002 uint16_t v; 1003 const char *s; 1004 } ipxsap_db[] = { 1005 { 0x0000, "Unknown" }, 1006 { 0x0001, "User" }, 1007 { 0x0002, "User Group" }, 1008 { 0x0003, "PrintQueue" }, 1009 { 0x0004, "FileServer" }, 1010 { 0x0005, "JobServer" }, 1011 { 0x0006, "Gateway" }, 1012 { 0x0007, "PrintServer" }, 1013 { 0x0008, "ArchiveQueue" }, 1014 { 0x0009, "ArchiveServer" }, 1015 { 0x000a, "JobQueue" }, 1016 { 0x000b, "Administration" }, 1017 { 0x000F, "Novell TI-RPC" }, 1018 { 0x0017, "Diagnostics" }, 1019 { 0x0020, "NetBIOS" }, 1020 { 0x0021, "NAS SNA Gateway" }, 1021 { 0x0023, "NACS AsyncGateway" }, 1022 { 0x0024, "RemoteBridge/RoutingService" }, 1023 { 0x0026, "BridgeServer" }, 1024 { 0x0027, "TCP/IP Gateway" }, 1025 { 0x0028, "Point-to-point X.25 BridgeServer" }, 1026 { 0x0029, "3270 Gateway" }, 1027 { 0x002a, "CHI Corp" }, 1028 { 0x002c, "PC Chalkboard" }, 1029 { 0x002d, "TimeSynchServer" }, 1030 { 0x002e, "ARCserve5.0/PalindromeBackup" }, 1031 { 0x0045, "DI3270 Gateway" }, 1032 { 0x0047, "AdvertisingPrintServer" }, 1033 { 0x004a, "NetBlazerModems" }, 1034 { 0x004b, "BtrieveVAP" }, 1035 { 0x004c, "NetwareSQL" }, 1036 { 0x004d, "XtreeNetwork" }, 1037 { 0x0050, "BtrieveVAP4.11" }, 1038 { 0x0052, "QuickLink" }, 1039 { 0x0053, "PrintQueueUser" }, 1040 { 0x0058, "Multipoint X.25 Router" }, 1041 { 0x0060, "STLB/NLM" }, 1042 { 0x0064, "ARCserve" }, 1043 { 0x0066, "ARCserve3.0" }, 1044 { 0x0072, "WAN CopyUtility" }, 1045 { 0x007a, "TES-NetwareVMS" }, 1046 { 0x0092, "WATCOM Debugger/EmeraldTapeBackupServer" }, 1047 { 0x0095, "DDA OBGYN" }, 1048 { 0x0098, "NetwareAccessServer" }, 1049 { 0x009a, "Netware for VMS II/NamedPipeServer" }, 1050 { 0x009b, "NetwareAccessServer" }, 1051 { 0x009e, "PortableNetwareServer/SunLinkNVT" }, 1052 { 0x00a1, "PowerchuteAPC UPS" }, 1053 { 0x00aa, "LAWserve" }, 1054 { 0x00ac, "CompaqIDA StatusMonitor" }, 1055 { 0x0100, "PIPE STAIL" }, 1056 { 0x0102, "LAN ProtectBindery" }, 1057 { 0x0103, "OracleDataBaseServer" }, 1058 { 0x0107, "Netware386/RSPX RemoteConsole" }, 1059 { 0x010f, "NovellSNA Gateway" }, 1060 { 0x0111, "TestServer" }, 1061 { 0x0112, "HP PrintServer" }, 1062 { 0x0114, "CSA MUX" }, 1063 { 0x0115, "CSA LCA" }, 1064 { 0x0116, "CSA CM" }, 1065 { 0x0117, "CSA SMA" }, 1066 { 0x0118, "CSA DBA" }, 1067 { 0x0119, "CSA NMA" }, 1068 { 0x011a, "CSA SSA" }, 1069 { 0x011b, "CSA STATUS" }, 1070 { 0x011e, "CSA APPC" }, 1071 { 0x0126, "SNA TEST SSA Profile" }, 1072 { 0x012a, "CSA TRACE" }, 1073 { 0x012b, "NetwareSAA" }, 1074 { 0x012e, "IKARUS VirusScan" }, 1075 { 0x0130, "CommunicationsExecutive" }, 1076 { 0x0133, "NNS DomainServer/NetwareNamingServicesDomain" }, 1077 { 0x0135, "NetwareNamingServicesProfile" }, 1078 { 0x0137, "Netware386 PrintQueue/NNS PrintQueue" }, 1079 { 0x0141, "LAN SpoolServer" }, 1080 { 0x0152, "IRMALAN Gateway" }, 1081 { 0x0154, "NamedPipeServer" }, 1082 { 0x0166, "NetWareManagement" }, 1083 { 0x0168, "Intel PICKIT CommServer/Intel CAS TalkServer" }, 1084 { 0x0173, "Compaq" }, 1085 { 0x0174, "Compaq SNMP Agent" }, 1086 { 0x0175, "Compaq" }, 1087 { 0x0180, "XTreeServer/XTreeTools" }, 1088 { 0x018A, "NASI ServicesBroadcastServer" }, 1089 { 0x01b0, "GARP Gateway" }, 1090 { 0x01b1, "Binfview" }, 1091 { 0x01bf, "IntelLanDeskManager" }, 1092 { 0x01ca, "AXTEC" }, 1093 { 0x01cb, "ShivaNetModem/E" }, 1094 { 0x01cc, "ShivaLanRover/E" }, 1095 { 0x01cd, "ShivaLanRover/T" }, 1096 { 0x01ce, "ShivaUniversal" }, 1097 { 0x01d8, "CastelleFAXPressServer" }, 1098 { 0x01da, "CastelleLANPressPrintServer" }, 1099 { 0x01dc, "CastelleFAX/Xerox7033 FaxServer/ExcelLanFax" }, 1100 { 0x01f0, "LEGATO" }, 1101 { 0x01f5, "LEGATO" }, 1102 { 0x0233, "NMS Agent/NetwareManagementAgent" }, 1103 { 0x0237, "NMS IPX Discovery/LANternReadWriteChannel" }, 1104 { 0x0238, "NMS IP Discovery/LANternTrapAlarmChannel" }, 1105 { 0x023a, "LANtern" }, 1106 { 0x023c, "MAVERICK" }, 1107 { 0x023f, "NovellSMDR" }, 1108 { 0x024e, "NetwareConnect" }, 1109 { 0x024f, "NASI ServerBroadcast Cisco" }, 1110 { 0x026a, "NMS ServiceConsole" }, 1111 { 0x026b, "TimeSynchronizationServer Netware 4.x" }, 1112 { 0x0278, "DirectoryServer Netware 4.x" }, 1113 { 0x027b, "NetwareManagementAgent" }, 1114 { 0x0280, "Novell File and Printer Sharing Service for PC" }, 1115 { 0x0304, "NovellSAA Gateway" }, 1116 { 0x0308, "COM/VERMED" }, 1117 { 0x030a, "GalacticommWorldgroupServer" }, 1118 { 0x030c, "IntelNetport2/HP JetDirect/HP Quicksilver" }, 1119 { 0x0320, "AttachmateGateway" }, 1120 { 0x0327, "MicrosoftDiagnostics" }, 1121 { 0x0328, "WATCOM SQL Server" }, 1122 { 0x0335, "MultiTechSystems MultisynchCommServer" }, 1123 { 0x0343, "Xylogics RemoteAccessServer/LANModem" }, 1124 { 0x0355, "ArcadaBackupExec" }, 1125 { 0x0358, "MSLCD1" }, 1126 { 0x0361, "NETINELO" }, 1127 { 0x037e, "Powerchute UPS Monitoring" }, 1128 { 0x037f, "ViruSafeNotify" }, 1129 { 0x0386, "HP Bridge" }, 1130 { 0x0387, "HP Hub" }, 1131 { 0x0394, "NetWare SAA Gateway" }, 1132 { 0x039b, "LotusNotes" }, 1133 { 0x03b7, "CertusAntiVirus" }, 1134 { 0x03c4, "ARCserve4.0" }, 1135 { 0x03c7, "LANspool3.5" }, 1136 { 0x03d7, "LexmarkPrinterServer" }, 1137 { 0x03d8, "LexmarkXLE PrinterServer" }, 1138 { 0x03dd, "BanyanENS NetwareClient" }, 1139 { 0x03de, "GuptaSequelBaseServer/NetWareSQL" }, 1140 { 0x03e1, "UnivelUnixware" }, 1141 { 0x03e4, "UnivelUnixware" }, 1142 { 0x03fc, "IntelNetport" }, 1143 { 0x03fd, "PrintServerQueue" }, 1144 { 0x040A, "ipnServer" }, 1145 { 0x040D, "LVERRMAN" }, 1146 { 0x040E, "LVLIC" }, 1147 { 0x0414, "NET Silicon (DPI)/Kyocera" }, 1148 { 0x0429, "SiteLockVirus" }, 1149 { 0x0432, "UFHELPR???" }, 1150 { 0x0433, "Synoptics281xAdvancedSNMPAgent" }, 1151 { 0x0444, "MicrosoftNT SNA Server" }, 1152 { 0x0448, "Oracle" }, 1153 { 0x044c, "ARCserve5.01" }, 1154 { 0x0457, "CanonGP55" }, 1155 { 0x045a, "QMS Printers" }, 1156 { 0x045b, "DellSCSI Array" }, 1157 { 0x0491, "NetBlazerModems" }, 1158 { 0x04ac, "OnTimeScheduler" }, 1159 { 0x04b0, "CD-Net" }, 1160 { 0x0513, "EmulexNQA" }, 1161 { 0x0520, "SiteLockChecks" }, 1162 { 0x0529, "SiteLockChecks" }, 1163 { 0x052d, "CitrixOS2 AppServer" }, 1164 { 0x0535, "Tektronix" }, 1165 { 0x0536, "Milan" }, 1166 { 0x055d, "Attachmate SNA gateway" }, 1167 { 0x056b, "IBM8235 ModemServer" }, 1168 { 0x056c, "ShivaLanRover/E PLUS" }, 1169 { 0x056d, "ShivaLanRover/T PLUS" }, 1170 { 0x0580, "McAfeeNetShield" }, 1171 { 0x05B8, "NLM to workstation communication (Revelation Software)" }, 1172 { 0x05BA, "CompatibleSystemsRouters" }, 1173 { 0x05BE, "CheyenneHierarchicalStorageManager" }, 1174 { 0x0606, "JCWatermarkImaging" }, 1175 { 0x060c, "AXISNetworkPrinter" }, 1176 { 0x0610, "AdaptecSCSIManagement" }, 1177 { 0x0621, "IBM AntiVirus" }, 1178 { 0x0640, "Windows95 RemoteRegistryService" }, 1179 { 0x064e, "MicrosoftIIS" }, 1180 { 0x067b, "Microsoft Win95/98 File and Print Sharing for NetWare" }, 1181 { 0x067c, "Microsoft Win95/98 File and Print Sharing for NetWare" }, 1182 { 0x076C, "Xerox" }, 1183 { 0x079b, "ShivaLanRover/E 115" }, 1184 { 0x079c, "ShivaLanRover/T 115" }, 1185 { 0x07B4, "CubixWorldDesk" }, 1186 { 0x07c2, "Quarterdeck IWare Connect V2.x NLM" }, 1187 { 0x07c1, "Quarterdeck IWare Connect V3.x NLM" }, 1188 { 0x0810, "ELAN License Server Demo" }, 1189 { 0x0824, "ShivaLanRoverAccessSwitch/E" }, 1190 { 0x086a, "ISSC Collector" }, 1191 { 0x087f, "ISSC DAS AgentAIX" }, 1192 { 0x0880, "Intel Netport PRO" }, 1193 { 0x0881, "Intel Netport PRO" }, 1194 { 0x0b29, "SiteLock" }, 1195 { 0x0c29, "SiteLockApplications" }, 1196 { 0x0c2c, "LicensingServer" }, 1197 { 0x2101, "PerformanceTechnologyInstantInternet" }, 1198 { 0x2380, "LAI SiteLock" }, 1199 { 0x238c, "MeetingMaker" }, 1200 { 0x4808, "SiteLockServer/SiteLockMetering" }, 1201 { 0x5555, "SiteLockUser" }, 1202 { 0x6312, "Tapeware" }, 1203 { 0x6f00, "RabbitGateway" }, 1204 { 0x7703, "MODEM" }, 1205 { 0x8002, "NetPortPrinters" }, 1206 { 0x8008, "WordPerfectNetworkVersion" }, 1207 { 0x85BE, "Cisco EIGRP" }, 1208 { 0x8888, "WordPerfectNetworkVersion/QuickNetworkManagement" }, 1209 { 0x9000, "McAfeeNetShield" }, 1210 { 0x9604, "CSA-NT_MON" }, 1211 { 0xb6a8, "OceanIsleReachoutRemoteControl" }, 1212 { 0xf11f, "SiteLockMetering" }, 1213 { 0xf1ff, "SiteLock" }, 1214 { 0xf503, "Microsoft SQL Server" }, 1215 { 0xF905, "IBM TimeAndPlace" }, 1216 { 0xfbfb, "TopCallIII FaxServer" }, 1217 { 0xffff, "AnyService/Wildcard" }, 1218 { 0, (char *)0 } 1219 }; 1220 1221 static void 1222 init_ipxsaparray(netdissect_options *ndo) 1223 { 1224 int i; 1225 struct hnamemem *table; 1226 1227 for (i = 0; ipxsap_db[i].s != NULL; i++) { 1228 u_int j = htons(ipxsap_db[i].v) & (HASHNAMESIZE-1); 1229 table = &ipxsaptable[j]; 1230 while (table->name) 1231 table = table->nxt; 1232 table->name = ipxsap_db[i].s; 1233 table->addr = htons(ipxsap_db[i].v); 1234 table->nxt = newhnamemem(ndo); 1235 } 1236 } 1237 1238 /* 1239 * Initialize the address to name translation machinery. We map all 1240 * non-local IP addresses to numeric addresses if ndo->ndo_fflag is true 1241 * (i.e., to prevent blocking on the nameserver). localnet is the IP address 1242 * of the local network. mask is its subnet mask. 1243 */ 1244 void 1245 init_addrtoname(netdissect_options *ndo, uint32_t localnet, uint32_t mask) 1246 { 1247 if (ndo->ndo_fflag) { 1248 f_localnet = localnet; 1249 f_netmask = mask; 1250 } 1251 if (ndo->ndo_nflag) 1252 /* 1253 * Simplest way to suppress names. 1254 */ 1255 return; 1256 1257 init_etherarray(ndo); 1258 init_servarray(ndo); 1259 init_eprotoarray(ndo); 1260 init_protoidarray(ndo); 1261 init_ipxsaparray(ndo); 1262 } 1263 1264 const char * 1265 dnaddr_string(netdissect_options *ndo, u_short dnaddr) 1266 { 1267 struct hnamemem *tp; 1268 1269 for (tp = &dnaddrtable[dnaddr & (HASHNAMESIZE-1)]; tp->nxt != NULL; 1270 tp = tp->nxt) 1271 if (tp->addr == dnaddr) 1272 return (tp->name); 1273 1274 tp->addr = dnaddr; 1275 tp->nxt = newhnamemem(ndo); 1276 tp->name = dnnum_string(ndo, dnaddr); 1277 1278 return(tp->name); 1279 } 1280 1281 /* Return a zero'ed hnamemem struct and cuts down on calloc() overhead */ 1282 struct hnamemem * 1283 newhnamemem(netdissect_options *ndo) 1284 { 1285 struct hnamemem *p; 1286 static struct hnamemem *ptr = NULL; 1287 static u_int num = 0; 1288 1289 if (num == 0) { 1290 num = 64; 1291 ptr = (struct hnamemem *)calloc(num, sizeof (*ptr)); 1292 if (ptr == NULL) 1293 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 1294 "%s: calloc", __func__); 1295 } 1296 --num; 1297 p = ptr++; 1298 return (p); 1299 } 1300 1301 /* Return a zero'ed h6namemem struct and cuts down on calloc() overhead */ 1302 struct h6namemem * 1303 newh6namemem(netdissect_options *ndo) 1304 { 1305 struct h6namemem *p; 1306 static struct h6namemem *ptr = NULL; 1307 static u_int num = 0; 1308 1309 if (num == 0) { 1310 num = 64; 1311 ptr = (struct h6namemem *)calloc(num, sizeof (*ptr)); 1312 if (ptr == NULL) 1313 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, 1314 "%s: calloc", __func__); 1315 } 1316 --num; 1317 p = ptr++; 1318 return (p); 1319 } 1320 1321 /* Represent TCI part of the 802.1Q 4-octet tag as text. */ 1322 const char * 1323 ieee8021q_tci_string(const uint16_t tci) 1324 { 1325 static char buf[128]; 1326 snprintf(buf, sizeof(buf), "vlan %u, p %u%s", 1327 tci & 0xfff, 1328 tci >> 13, 1329 (tci & 0x1000) ? ", DEI" : ""); 1330 return buf; 1331 } 1332
Indexes created Tue Feb 24 08:35:24 UTC 2026