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