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