Upgrade to tcpdump-4.0.0.
[dragonfly.git] / contrib / tcpdump / addrtoname.c
CommitLineData
c8cf0f94
PA
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#ifndef lint
25static const char rcsid[] _U_ =
ea7b4bf5 26 "@(#) $Header: /tcpdump/master/tcpdump/addrtoname.c,v 1.119 2007-08-08 14:06:34 hannes Exp $ (LBL)";
c8cf0f94
PA
27#endif
28
29#ifdef HAVE_CONFIG_H
30#include "config.h"
31#endif
32
33#include <tcpdump-stdinc.h>
34
35#ifdef USE_ETHER_NTOHOST
36#ifdef HAVE_NETINET_IF_ETHER_H
37struct mbuf; /* Squelch compiler warnings on some platforms for */
38struct rtentry; /* declarations in <net/if.h> */
39#include <net/if.h> /* for "struct ifnet" in "struct arpcom" on Solaris */
40#include <netinet/if_ether.h>
41#endif /* HAVE_NETINET_IF_ETHER_H */
42#ifdef NETINET_ETHER_H_DECLARES_ETHER_NTOHOST
43#include <netinet/ether.h>
44#endif /* NETINET_ETHER_H_DECLARES_ETHER_NTOHOST */
45
46#if !defined(HAVE_DECL_ETHER_NTOHOST) || !HAVE_DECL_ETHER_NTOHOST
47#ifndef HAVE_STRUCT_ETHER_ADDR
48struct ether_addr {
49 unsigned char ether_addr_octet[6];
50};
51#endif
52extern int ether_ntohost(char *, const struct ether_addr *);
53#endif
54
55#endif /* USE_ETHER_NTOHOST */
56
57#include <pcap.h>
58#include <pcap-namedb.h>
59#include <signal.h>
60#include <stdio.h>
61#include <string.h>
62#include <stdlib.h>
63
64#include "interface.h"
65#include "addrtoname.h"
66#include "llc.h"
67#include "setsignal.h"
68#include "extract.h"
69#include "oui.h"
70
71#ifndef ETHER_ADDR_LEN
825e8fa1 72#define ETHER_ADDR_LEN 6
c8cf0f94
PA
73#endif
74
75/*
76 * hash tables for whatever-to-name translations
77 *
78 * XXX there has to be error checks against strdup(3) failure
79 */
80
81#define HASHNAMESIZE 4096
c8cf0f94
PA
82
83struct hnamemem {
84 u_int32_t addr;
85 const char *name;
86 struct hnamemem *nxt;
87};
88
89struct hnamemem hnametable[HASHNAMESIZE];
90struct hnamemem tporttable[HASHNAMESIZE];
91struct hnamemem uporttable[HASHNAMESIZE];
92struct hnamemem eprototable[HASHNAMESIZE];
93struct hnamemem dnaddrtable[HASHNAMESIZE];
94struct hnamemem ipxsaptable[HASHNAMESIZE];
95
96#if defined(INET6) && defined(WIN32)
97/*
98 * fake gethostbyaddr for Win2k/XP
99 * gethostbyaddr() returns incorrect value when AF_INET6 is passed
100 * to 3rd argument.
101 *
102 * h_name in struct hostent is only valid.
103 */
104static struct hostent *
105win32_gethostbyaddr(const char *addr, int len, int type)
106{
107 static struct hostent host;
108 static char hostbuf[NI_MAXHOST];
109 char hname[NI_MAXHOST];
110 struct sockaddr_in6 addr6;
111
112 host.h_name = hostbuf;
113 switch (type) {
114 case AF_INET:
115 return gethostbyaddr(addr, len, type);
116 break;
117 case AF_INET6:
118 memset(&addr6, 0, sizeof(addr6));
119 addr6.sin6_family = AF_INET6;
120 memcpy(&addr6.sin6_addr, addr, len);
121 if (getnameinfo((struct sockaddr *)&addr6, sizeof(addr6),
122 hname, sizeof(hname), NULL, 0, 0)) {
123 return NULL;
124 } else {
125 strcpy(host.h_name, hname);
126 return &host;
127 }
128 break;
129 default:
130 return NULL;
131 }
132}
133#define gethostbyaddr win32_gethostbyaddr
134#endif /* INET6 & WIN32 */
135
136#ifdef INET6
137struct h6namemem {
138 struct in6_addr addr;
139 char *name;
140 struct h6namemem *nxt;
141};
142
143struct h6namemem h6nametable[HASHNAMESIZE];
144#endif /* INET6 */
145
146struct enamemem {
147 u_short e_addr0;
148 u_short e_addr1;
149 u_short e_addr2;
150 const char *e_name;
151 u_char *e_nsap; /* used only for nsaptable[] */
152#define e_bs e_nsap /* for bytestringtable */
153 struct enamemem *e_nxt;
154};
155
156struct enamemem enametable[HASHNAMESIZE];
157struct enamemem nsaptable[HASHNAMESIZE];
158struct enamemem bytestringtable[HASHNAMESIZE];
159
160struct protoidmem {
161 u_int32_t p_oui;
162 u_short p_proto;
163 const char *p_name;
164 struct protoidmem *p_nxt;
165};
166
167struct protoidmem protoidtable[HASHNAMESIZE];
168
169/*
170 * A faster replacement for inet_ntoa().
171 */
172const char *
173intoa(u_int32_t addr)
174{
175 register char *cp;
176 register u_int byte;
177 register int n;
178 static char buf[sizeof(".xxx.xxx.xxx.xxx")];
179
180 NTOHL(addr);
181 cp = buf + sizeof(buf);
182 *--cp = '\0';
183
184 n = 4;
185 do {
186 byte = addr & 0xff;
187 *--cp = byte % 10 + '0';
188 byte /= 10;
189 if (byte > 0) {
190 *--cp = byte % 10 + '0';
191 byte /= 10;
192 if (byte > 0)
193 *--cp = byte + '0';
194 }
195 *--cp = '.';
196 addr >>= 8;
197 } while (--n > 0);
198
199 return cp + 1;
200}
201
202static u_int32_t f_netmask;
203static u_int32_t f_localnet;
204
205/*
206 * Return a name for the IP address pointed to by ap. This address
207 * is assumed to be in network byte order.
208 *
209 * NOTE: ap is *NOT* necessarily part of the packet data (not even if
210 * this is being called with the "ipaddr_string()" macro), so you
211 * *CANNOT* use the TCHECK{2}/TTEST{2} macros on it. Furthermore,
212 * even in cases where it *is* part of the packet data, the caller
213 * would still have to check for a null return value, even if it's
214 * just printing the return value with "%s" - not all versions of
215 * printf print "(null)" with "%s" and a null pointer, some of them
216 * don't check for a null pointer and crash in that case.
217 *
218 * The callers of this routine should, before handing this routine
219 * a pointer to packet data, be sure that the data is present in
220 * the packet buffer. They should probably do those checks anyway,
221 * as other data at that layer might not be IP addresses, and it
222 * also needs to check whether they're present in the packet buffer.
223 */
224const char *
225getname(const u_char *ap)
226{
227 register struct hostent *hp;
228 u_int32_t addr;
229 static struct hnamemem *p; /* static for longjmp() */
230
231 memcpy(&addr, ap, sizeof(addr));
232 p = &hnametable[addr & (HASHNAMESIZE-1)];
233 for (; p->nxt; p = p->nxt) {
234 if (p->addr == addr)
235 return (p->name);
236 }
237 p->addr = addr;
238 p->nxt = newhnamemem();
239
240 /*
241 * Print names unless:
242 * (1) -n was given.
243 * (2) Address is foreign and -f was given. (If -f was not
244 * given, f_netmask and f_localnet are 0 and the test
245 * evaluates to true)
246 */
247 if (!nflag &&
248 (addr & f_netmask) == f_localnet) {
249 hp = gethostbyaddr((char *)&addr, 4, AF_INET);
250 if (hp) {
251 char *dotp;
252
253 p->name = strdup(hp->h_name);
254 if (Nflag) {
255 /* Remove domain qualifications */
256 dotp = strchr(p->name, '.');
257 if (dotp)
258 *dotp = '\0';
259 }
260 return (p->name);
261 }
262 }
263 p->name = strdup(intoa(addr));
264 return (p->name);
265}
266
267#ifdef INET6
268/*
269 * Return a name for the IP6 address pointed to by ap. This address
270 * is assumed to be in network byte order.
271 */
272const char *
273getname6(const u_char *ap)
274{
275 register struct hostent *hp;
276 struct in6_addr addr;
277 static struct h6namemem *p; /* static for longjmp() */
278 register const char *cp;
279 char ntop_buf[INET6_ADDRSTRLEN];
280
281 memcpy(&addr, ap, sizeof(addr));
282 p = &h6nametable[*(u_int16_t *)&addr.s6_addr[14] & (HASHNAMESIZE-1)];
283 for (; p->nxt; p = p->nxt) {
284 if (memcmp(&p->addr, &addr, sizeof(addr)) == 0)
285 return (p->name);
286 }
287 p->addr = addr;
288 p->nxt = newh6namemem();
289
290 /*
291 * Do not print names if -n was given.
292 */
293 if (!nflag) {
294 hp = gethostbyaddr((char *)&addr, sizeof(addr), AF_INET6);
295 if (hp) {
296 char *dotp;
297
298 p->name = strdup(hp->h_name);
299 if (Nflag) {
300 /* Remove domain qualifications */
301 dotp = strchr(p->name, '.');
302 if (dotp)
303 *dotp = '\0';
304 }
305 return (p->name);
306 }
307 }
308 cp = inet_ntop(AF_INET6, &addr, ntop_buf, sizeof(ntop_buf));
309 p->name = strdup(cp);
310 return (p->name);
311}
312#endif /* INET6 */
313
314static char hex[] = "0123456789abcdef";
315
316
317/* Find the hash node that corresponds the ether address 'ep' */
318
319static inline struct enamemem *
320lookup_emem(const u_char *ep)
321{
322 register u_int i, j, k;
323 struct enamemem *tp;
324
325 k = (ep[0] << 8) | ep[1];
326 j = (ep[2] << 8) | ep[3];
327 i = (ep[4] << 8) | ep[5];
328
329 tp = &enametable[(i ^ j) & (HASHNAMESIZE-1)];
330 while (tp->e_nxt)
331 if (tp->e_addr0 == i &&
332 tp->e_addr1 == j &&
333 tp->e_addr2 == k)
334 return tp;
335 else
336 tp = tp->e_nxt;
337 tp->e_addr0 = i;
338 tp->e_addr1 = j;
339 tp->e_addr2 = k;
340 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp));
341 if (tp->e_nxt == NULL)
342 error("lookup_emem: calloc");
343
344 return tp;
345}
346
347/*
348 * Find the hash node that corresponds to the bytestring 'bs'
349 * with length 'nlen'
350 */
351
352static inline struct enamemem *
353lookup_bytestring(register const u_char *bs, const unsigned int nlen)
354{
355 struct enamemem *tp;
356 register u_int i, j, k;
357
358 if (nlen >= 6) {
359 k = (bs[0] << 8) | bs[1];
360 j = (bs[2] << 8) | bs[3];
361 i = (bs[4] << 8) | bs[5];
362 } else if (nlen >= 4) {
363 k = (bs[0] << 8) | bs[1];
364 j = (bs[2] << 8) | bs[3];
365 i = 0;
366 } else
367 i = j = k = 0;
368
369 tp = &bytestringtable[(i ^ j) & (HASHNAMESIZE-1)];
370 while (tp->e_nxt)
371 if (tp->e_addr0 == i &&
372 tp->e_addr1 == j &&
373 tp->e_addr2 == k &&
374 memcmp((const char *)bs, (const char *)(tp->e_bs), nlen) == 0)
375 return tp;
376 else
377 tp = tp->e_nxt;
378
379 tp->e_addr0 = i;
380 tp->e_addr1 = j;
381 tp->e_addr2 = k;
382
383 tp->e_bs = (u_char *) calloc(1, nlen + 1);
384 memcpy(tp->e_bs, bs, nlen);
385 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp));
386 if (tp->e_nxt == NULL)
387 error("lookup_bytestring: calloc");
388
389 return tp;
390}
391
392/* Find the hash node that corresponds the NSAP 'nsap' */
393
394static inline struct enamemem *
395lookup_nsap(register const u_char *nsap)
396{
397 register u_int i, j, k;
398 unsigned int nlen = *nsap;
399 struct enamemem *tp;
400 const u_char *ensap = nsap + nlen - 6;
401
402 if (nlen > 6) {
403 k = (ensap[0] << 8) | ensap[1];
404 j = (ensap[2] << 8) | ensap[3];
405 i = (ensap[4] << 8) | ensap[5];
406 }
407 else
408 i = j = k = 0;
409
410 tp = &nsaptable[(i ^ j) & (HASHNAMESIZE-1)];
411 while (tp->e_nxt)
412 if (tp->e_addr0 == i &&
413 tp->e_addr1 == j &&
414 tp->e_addr2 == k &&
415 tp->e_nsap[0] == nlen &&
416 memcmp((const char *)&(nsap[1]),
417 (char *)&(tp->e_nsap[1]), nlen) == 0)
418 return tp;
419 else
420 tp = tp->e_nxt;
421 tp->e_addr0 = i;
422 tp->e_addr1 = j;
423 tp->e_addr2 = k;
424 tp->e_nsap = (u_char *)malloc(nlen + 1);
425 if (tp->e_nsap == NULL)
426 error("lookup_nsap: malloc");
427 memcpy((char *)tp->e_nsap, (const char *)nsap, nlen + 1);
428 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp));
429 if (tp->e_nxt == NULL)
430 error("lookup_nsap: calloc");
431
432 return tp;
433}
434
435/* Find the hash node that corresponds the protoid 'pi'. */
436
437static inline struct protoidmem *
438lookup_protoid(const u_char *pi)
439{
440 register u_int i, j;
441 struct protoidmem *tp;
442
443 /* 5 octets won't be aligned */
444 i = (((pi[0] << 8) + pi[1]) << 8) + pi[2];
445 j = (pi[3] << 8) + pi[4];
446 /* XXX should be endian-insensitive, but do big-endian testing XXX */
447
448 tp = &protoidtable[(i ^ j) & (HASHNAMESIZE-1)];
449 while (tp->p_nxt)
450 if (tp->p_oui == i && tp->p_proto == j)
451 return tp;
452 else
453 tp = tp->p_nxt;
454 tp->p_oui = i;
455 tp->p_proto = j;
456 tp->p_nxt = (struct protoidmem *)calloc(1, sizeof(*tp));
457 if (tp->p_nxt == NULL)
458 error("lookup_protoid: calloc");
459
460 return tp;
461}
462
463const char *
464etheraddr_string(register const u_char *ep)
465{
466 register int i;
467 register char *cp;
468 register struct enamemem *tp;
469 int oui;
470 char buf[BUFSIZE];
471
472 tp = lookup_emem(ep);
473 if (tp->e_name)
474 return (tp->e_name);
475#ifdef USE_ETHER_NTOHOST
476 if (!nflag) {
477 char buf2[BUFSIZE];
478
479 /*
480 * We don't cast it to "const struct ether_addr *"
481 * because some systems fail to declare the second
482 * argument as a "const" pointer, even though they
483 * don't modify what it points to.
484 */
485 if (ether_ntohost(buf2, (struct ether_addr *)ep) == 0) {
486 tp->e_name = strdup(buf2);
487 return (tp->e_name);
488 }
489 }
490#endif
491 cp = buf;
492 oui = EXTRACT_24BITS(ep);
493 *cp++ = hex[*ep >> 4 ];
494 *cp++ = hex[*ep++ & 0xf];
495 for (i = 5; --i >= 0;) {
496 *cp++ = ':';
497 *cp++ = hex[*ep >> 4 ];
498 *cp++ = hex[*ep++ & 0xf];
499 }
500
501 if (!nflag) {
502 snprintf(cp, BUFSIZE - (2 + 5*3), " (oui %s)",
503 tok2str(oui_values, "Unknown", oui));
504 } else
505 *cp = '\0';
506 tp->e_name = strdup(buf);
507 return (tp->e_name);
508}
509
510const char *
ea7b4bf5 511linkaddr_string(const u_char *ep, const unsigned int type, const unsigned int len)
c8cf0f94
PA
512{
513 register u_int i;
514 register char *cp;
515 register struct enamemem *tp;
516
ea7b4bf5
PA
517 if (type == LINKADDR_ETHER && len == ETHER_ADDR_LEN) {
518 return etheraddr_string(ep);
519 }
520
521 if (type == LINKADDR_FRELAY) {
522 return q922_string(ep);
523 }
c8cf0f94
PA
524
525 tp = lookup_bytestring(ep, len);
526 if (tp->e_name)
527 return (tp->e_name);
528
529 tp->e_name = cp = (char *)malloc(len*3);
530 if (tp->e_name == NULL)
531 error("linkaddr_string: malloc");
532 *cp++ = hex[*ep >> 4];
533 *cp++ = hex[*ep++ & 0xf];
534 for (i = len-1; i > 0 ; --i) {
535 *cp++ = ':';
536 *cp++ = hex[*ep >> 4];
537 *cp++ = hex[*ep++ & 0xf];
538 }
539 *cp = '\0';
540 return (tp->e_name);
541}
542
543const char *
544etherproto_string(u_short port)
545{
546 register char *cp;
547 register struct hnamemem *tp;
548 register u_int32_t i = port;
549 char buf[sizeof("0000")];
550
551 for (tp = &eprototable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
552 if (tp->addr == i)
553 return (tp->name);
554
555 tp->addr = i;
556 tp->nxt = newhnamemem();
557
558 cp = buf;
559 NTOHS(port);
560 *cp++ = hex[port >> 12 & 0xf];
561 *cp++ = hex[port >> 8 & 0xf];
562 *cp++ = hex[port >> 4 & 0xf];
563 *cp++ = hex[port & 0xf];
564 *cp++ = '\0';
565 tp->name = strdup(buf);
566 return (tp->name);
567}
568
569const char *
570protoid_string(register const u_char *pi)
571{
572 register u_int i, j;
573 register char *cp;
574 register struct protoidmem *tp;
575 char buf[sizeof("00:00:00:00:00")];
576
577 tp = lookup_protoid(pi);
578 if (tp->p_name)
579 return tp->p_name;
580
581 cp = buf;
582 if ((j = *pi >> 4) != 0)
583 *cp++ = hex[j];
584 *cp++ = hex[*pi++ & 0xf];
585 for (i = 4; (int)--i >= 0;) {
586 *cp++ = ':';
587 if ((j = *pi >> 4) != 0)
588 *cp++ = hex[j];
589 *cp++ = hex[*pi++ & 0xf];
590 }
591 *cp = '\0';
592 tp->p_name = strdup(buf);
593 return (tp->p_name);
594}
595
596#define ISONSAP_MAX_LENGTH 20
597const char *
598isonsap_string(const u_char *nsap, register u_int nsap_length)
599{
600 register u_int nsap_idx;
601 register char *cp;
602 register struct enamemem *tp;
603
604 if (nsap_length < 1 || nsap_length > ISONSAP_MAX_LENGTH)
605 return ("isonsap_string: illegal length");
606
607 tp = lookup_nsap(nsap);
608 if (tp->e_name)
609 return tp->e_name;
610
611 tp->e_name = cp = (char *)malloc(sizeof("xx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xx"));
612 if (cp == NULL)
613 error("isonsap_string: malloc");
614
615 for (nsap_idx = 0; nsap_idx < nsap_length; nsap_idx++) {
616 *cp++ = hex[*nsap >> 4];
617 *cp++ = hex[*nsap++ & 0xf];
618 if (((nsap_idx & 1) == 0) &&
619 (nsap_idx + 1 < nsap_length)) {
620 *cp++ = '.';
621 }
622 }
623 *cp = '\0';
624 return (tp->e_name);
625}
626
627const char *
628tcpport_string(u_short port)
629{
630 register struct hnamemem *tp;
631 register u_int32_t i = port;
632 char buf[sizeof("00000")];
633
634 for (tp = &tporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
635 if (tp->addr == i)
636 return (tp->name);
637
638 tp->addr = i;
639 tp->nxt = newhnamemem();
640
641 (void)snprintf(buf, sizeof(buf), "%u", i);
642 tp->name = strdup(buf);
643 return (tp->name);
644}
645
646const char *
647udpport_string(register u_short port)
648{
649 register struct hnamemem *tp;
650 register u_int32_t i = port;
651 char buf[sizeof("00000")];
652
653 for (tp = &uporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
654 if (tp->addr == i)
655 return (tp->name);
656
657 tp->addr = i;
658 tp->nxt = newhnamemem();
659
660 (void)snprintf(buf, sizeof(buf), "%u", i);
661 tp->name = strdup(buf);
662 return (tp->name);
663}
664
665const char *
666ipxsap_string(u_short port)
667{
668 register char *cp;
669 register struct hnamemem *tp;
670 register u_int32_t i = port;
671 char buf[sizeof("0000")];
672
673 for (tp = &ipxsaptable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
674 if (tp->addr == i)
675 return (tp->name);
676
677 tp->addr = i;
678 tp->nxt = newhnamemem();
679
680 cp = buf;
681 NTOHS(port);
682 *cp++ = hex[port >> 12 & 0xf];
683 *cp++ = hex[port >> 8 & 0xf];
684 *cp++ = hex[port >> 4 & 0xf];
685 *cp++ = hex[port & 0xf];
686 *cp++ = '\0';
687 tp->name = strdup(buf);
688 return (tp->name);
689}
690
691static void
692init_servarray(void)
693{
694 struct servent *sv;
695 register struct hnamemem *table;
696 register int i;
697 char buf[sizeof("0000000000")];
698
699 while ((sv = getservent()) != NULL) {
700 int port = ntohs(sv->s_port);
701 i = port & (HASHNAMESIZE-1);
702 if (strcmp(sv->s_proto, "tcp") == 0)
703 table = &tporttable[i];
704 else if (strcmp(sv->s_proto, "udp") == 0)
705 table = &uporttable[i];
706 else
707 continue;
708
709 while (table->name)
710 table = table->nxt;
711 if (nflag) {
712 (void)snprintf(buf, sizeof(buf), "%d", port);
713 table->name = strdup(buf);
714 } else
715 table->name = strdup(sv->s_name);
716 table->addr = port;
717 table->nxt = newhnamemem();
718 }
719 endservent();
720}
721
722/* in libpcap.a (nametoaddr.c) */
723#if defined(WIN32) && !defined(USE_STATIC_LIBPCAP)
724__declspec(dllimport)
725#else
726extern
727#endif
728const struct eproto {
729 const char *s;
730 u_short p;
731} eproto_db[];
732
733static void
734init_eprotoarray(void)
735{
736 register int i;
737 register struct hnamemem *table;
738
739 for (i = 0; eproto_db[i].s; i++) {
740 int j = htons(eproto_db[i].p) & (HASHNAMESIZE-1);
741 table = &eprototable[j];
742 while (table->name)
743 table = table->nxt;
744 table->name = eproto_db[i].s;
745 table->addr = htons(eproto_db[i].p);
746 table->nxt = newhnamemem();
747 }
748}
749
750static struct protoidlist {
751 const u_char protoid[5];
752 const char *name;
753} protoidlist[] = {
754 {{ 0x00, 0x00, 0x0c, 0x01, 0x07 }, "CiscoMLS" },
755 {{ 0x00, 0x00, 0x0c, 0x20, 0x00 }, "CiscoCDP" },
756 {{ 0x00, 0x00, 0x0c, 0x20, 0x01 }, "CiscoCGMP" },
757 {{ 0x00, 0x00, 0x0c, 0x20, 0x03 }, "CiscoVTP" },
758 {{ 0x00, 0xe0, 0x2b, 0x00, 0xbb }, "ExtremeEDP" },
759 {{ 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL }
760};
761
762/*
763 * SNAP proto IDs with org code 0:0:0 are actually encapsulated Ethernet
764 * types.
765 */
766static void
767init_protoidarray(void)
768{
769 register int i;
770 register struct protoidmem *tp;
771 struct protoidlist *pl;
772 u_char protoid[5];
773
774 protoid[0] = 0;
775 protoid[1] = 0;
776 protoid[2] = 0;
777 for (i = 0; eproto_db[i].s; i++) {
778 u_short etype = htons(eproto_db[i].p);
779
780 memcpy((char *)&protoid[3], (char *)&etype, 2);
781 tp = lookup_protoid(protoid);
782 tp->p_name = strdup(eproto_db[i].s);
783 }
784 /* Hardwire some SNAP proto ID names */
785 for (pl = protoidlist; pl->name != NULL; ++pl) {
786 tp = lookup_protoid(pl->protoid);
787 /* Don't override existing name */
788 if (tp->p_name != NULL)
789 continue;
790
791 tp->p_name = pl->name;
792 }
793}
794
795static struct etherlist {
796 const u_char addr[6];
797 const char *name;
798} etherlist[] = {
799 {{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, "Broadcast" },
800 {{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL }
801};
802
803/*
804 * Initialize the ethers hash table. We take two different approaches
805 * depending on whether or not the system provides the ethers name
806 * service. If it does, we just wire in a few names at startup,
807 * and etheraddr_string() fills in the table on demand. If it doesn't,
808 * then we suck in the entire /etc/ethers file at startup. The idea
809 * is that parsing the local file will be fast, but spinning through
810 * all the ethers entries via NIS & next_etherent might be very slow.
811 *
812 * XXX pcap_next_etherent doesn't belong in the pcap interface, but
813 * since the pcap module already does name-to-address translation,
814 * it's already does most of the work for the ethernet address-to-name
815 * translation, so we just pcap_next_etherent as a convenience.
816 */
817static void
818init_etherarray(void)
819{
820 register struct etherlist *el;
821 register struct enamemem *tp;
822#ifdef USE_ETHER_NTOHOST
823 char name[256];
824#else
825 register struct pcap_etherent *ep;
826 register FILE *fp;
827
828 /* Suck in entire ethers file */
829 fp = fopen(PCAP_ETHERS_FILE, "r");
830 if (fp != NULL) {
831 while ((ep = pcap_next_etherent(fp)) != NULL) {
832 tp = lookup_emem(ep->addr);
833 tp->e_name = strdup(ep->name);
834 }
835 (void)fclose(fp);
836 }
837#endif
838
839 /* Hardwire some ethernet names */
840 for (el = etherlist; el->name != NULL; ++el) {
841 tp = lookup_emem(el->addr);
842 /* Don't override existing name */
843 if (tp->e_name != NULL)
844 continue;
845
846#ifdef USE_ETHER_NTOHOST
847 /*
848 * Use YP/NIS version of name if available.
849 *
850 * We don't cast it to "const struct ether_addr *"
851 * because some systems don't modify the Ethernet
852 * address but fail to declare the second argument
853 * as a "const" pointer.
854 */
855 if (ether_ntohost(name, (struct ether_addr *)el->addr) == 0) {
856 tp->e_name = strdup(name);
857 continue;
858 }
859#endif
860 tp->e_name = el->name;
861 }
862}
863
864static struct tok ipxsap_db[] = {
865 { 0x0000, "Unknown" },
866 { 0x0001, "User" },
867 { 0x0002, "User Group" },
868 { 0x0003, "PrintQueue" },
869 { 0x0004, "FileServer" },
870 { 0x0005, "JobServer" },
871 { 0x0006, "Gateway" },
872 { 0x0007, "PrintServer" },
873 { 0x0008, "ArchiveQueue" },
874 { 0x0009, "ArchiveServer" },
875 { 0x000a, "JobQueue" },
876 { 0x000b, "Administration" },
877 { 0x000F, "Novell TI-RPC" },
878 { 0x0017, "Diagnostics" },
879 { 0x0020, "NetBIOS" },
880 { 0x0021, "NAS SNA Gateway" },
881 { 0x0023, "NACS AsyncGateway" },
882 { 0x0024, "RemoteBridge/RoutingService" },
883 { 0x0026, "BridgeServer" },
884 { 0x0027, "TCP/IP Gateway" },
885 { 0x0028, "Point-to-point X.25 BridgeServer" },
886 { 0x0029, "3270 Gateway" },
887 { 0x002a, "CHI Corp" },
888 { 0x002c, "PC Chalkboard" },
889 { 0x002d, "TimeSynchServer" },
890 { 0x002e, "ARCserve5.0/PalindromeBackup" },
891 { 0x0045, "DI3270 Gateway" },
892 { 0x0047, "AdvertisingPrintServer" },
893 { 0x004a, "NetBlazerModems" },
894 { 0x004b, "BtrieveVAP" },
895 { 0x004c, "NetwareSQL" },
896 { 0x004d, "XtreeNetwork" },
897 { 0x0050, "BtrieveVAP4.11" },
898 { 0x0052, "QuickLink" },
899 { 0x0053, "PrintQueueUser" },
900 { 0x0058, "Multipoint X.25 Router" },
901 { 0x0060, "STLB/NLM" },
902 { 0x0064, "ARCserve" },
903 { 0x0066, "ARCserve3.0" },
904 { 0x0072, "WAN CopyUtility" },
905 { 0x007a, "TES-NetwareVMS" },
906 { 0x0092, "WATCOM Debugger/EmeraldTapeBackupServer" },
907 { 0x0095, "DDA OBGYN" },
908 { 0x0098, "NetwareAccessServer" },
909 { 0x009a, "Netware for VMS II/NamedPipeServer" },
910 { 0x009b, "NetwareAccessServer" },
911 { 0x009e, "PortableNetwareServer/SunLinkNVT" },
912 { 0x00a1, "PowerchuteAPC UPS" },
913 { 0x00aa, "LAWserve" },
914 { 0x00ac, "CompaqIDA StatusMonitor" },
915 { 0x0100, "PIPE STAIL" },
916 { 0x0102, "LAN ProtectBindery" },
917 { 0x0103, "OracleDataBaseServer" },
918 { 0x0107, "Netware386/RSPX RemoteConsole" },
919 { 0x010f, "NovellSNA Gateway" },
920 { 0x0111, "TestServer" },
921 { 0x0112, "HP PrintServer" },
922 { 0x0114, "CSA MUX" },
923 { 0x0115, "CSA LCA" },
924 { 0x0116, "CSA CM" },
925 { 0x0117, "CSA SMA" },
926 { 0x0118, "CSA DBA" },
927 { 0x0119, "CSA NMA" },
928 { 0x011a, "CSA SSA" },
929 { 0x011b, "CSA STATUS" },
930 { 0x011e, "CSA APPC" },
931 { 0x0126, "SNA TEST SSA Profile" },
932 { 0x012a, "CSA TRACE" },
933 { 0x012b, "NetwareSAA" },
934 { 0x012e, "IKARUS VirusScan" },
935 { 0x0130, "CommunicationsExecutive" },
936 { 0x0133, "NNS DomainServer/NetwareNamingServicesDomain" },
937 { 0x0135, "NetwareNamingServicesProfile" },
938 { 0x0137, "Netware386 PrintQueue/NNS PrintQueue" },
939 { 0x0141, "LAN SpoolServer" },
940 { 0x0152, "IRMALAN Gateway" },
941 { 0x0154, "NamedPipeServer" },
942 { 0x0166, "NetWareManagement" },
943 { 0x0168, "Intel PICKIT CommServer/Intel CAS TalkServer" },
944 { 0x0173, "Compaq" },
945 { 0x0174, "Compaq SNMP Agent" },
946 { 0x0175, "Compaq" },
947 { 0x0180, "XTreeServer/XTreeTools" },
948 { 0x018A, "NASI ServicesBroadcastServer" },
949 { 0x01b0, "GARP Gateway" },
950 { 0x01b1, "Binfview" },
951 { 0x01bf, "IntelLanDeskManager" },
952 { 0x01ca, "AXTEC" },
953 { 0x01cb, "ShivaNetModem/E" },
954 { 0x01cc, "ShivaLanRover/E" },
955 { 0x01cd, "ShivaLanRover/T" },
956 { 0x01ce, "ShivaUniversal" },
957 { 0x01d8, "CastelleFAXPressServer" },
958 { 0x01da, "CastelleLANPressPrintServer" },
959 { 0x01dc, "CastelleFAX/Xerox7033 FaxServer/ExcelLanFax" },
960 { 0x01f0, "LEGATO" },
961 { 0x01f5, "LEGATO" },
962 { 0x0233, "NMS Agent/NetwareManagementAgent" },
963 { 0x0237, "NMS IPX Discovery/LANternReadWriteChannel" },
964 { 0x0238, "NMS IP Discovery/LANternTrapAlarmChannel" },
965 { 0x023a, "LANtern" },
966 { 0x023c, "MAVERICK" },
967 { 0x023f, "NovellSMDR" },
968 { 0x024e, "NetwareConnect" },
969 { 0x024f, "NASI ServerBroadcast Cisco" },
970 { 0x026a, "NMS ServiceConsole" },
971 { 0x026b, "TimeSynchronizationServer Netware 4.x" },
972 { 0x0278, "DirectoryServer Netware 4.x" },
973 { 0x027b, "NetwareManagementAgent" },
974 { 0x0280, "Novell File and Printer Sharing Service for PC" },
975 { 0x0304, "NovellSAA Gateway" },
976 { 0x0308, "COM/VERMED" },
977 { 0x030a, "GalacticommWorldgroupServer" },
978 { 0x030c, "IntelNetport2/HP JetDirect/HP Quicksilver" },
979 { 0x0320, "AttachmateGateway" },
980 { 0x0327, "MicrosoftDiagnostiocs" },
981 { 0x0328, "WATCOM SQL Server" },
982 { 0x0335, "MultiTechSystems MultisynchCommServer" },
983 { 0x0343, "Xylogics RemoteAccessServer/LANModem" },
984 { 0x0355, "ArcadaBackupExec" },
985 { 0x0358, "MSLCD1" },
986 { 0x0361, "NETINELO" },
987 { 0x037e, "Powerchute UPS Monitoring" },
988 { 0x037f, "ViruSafeNotify" },
989 { 0x0386, "HP Bridge" },
990 { 0x0387, "HP Hub" },
991 { 0x0394, "NetWare SAA Gateway" },
992 { 0x039b, "LotusNotes" },
993 { 0x03b7, "CertusAntiVirus" },
994 { 0x03c4, "ARCserve4.0" },
995 { 0x03c7, "LANspool3.5" },
996 { 0x03d7, "LexmarkPrinterServer" },
997 { 0x03d8, "LexmarkXLE PrinterServer" },
998 { 0x03dd, "BanyanENS NetwareClient" },
999 { 0x03de, "GuptaSequelBaseServer/NetWareSQL" },
1000 { 0x03e1, "UnivelUnixware" },
1001 { 0x03e4, "UnivelUnixware" },
1002 { 0x03fc, "IntelNetport" },
1003 { 0x03fd, "PrintServerQueue" },
1004 { 0x040A, "ipnServer" },
1005 { 0x040D, "LVERRMAN" },
1006 { 0x040E, "LVLIC" },
1007 { 0x0414, "NET Silicon (DPI)/Kyocera" },
1008 { 0x0429, "SiteLockVirus" },
1009 { 0x0432, "UFHELPR???" },
1010 { 0x0433, "Synoptics281xAdvancedSNMPAgent" },
1011 { 0x0444, "MicrosoftNT SNA Server" },
1012 { 0x0448, "Oracle" },
1013 { 0x044c, "ARCserve5.01" },
1014 { 0x0457, "CanonGP55" },
1015 { 0x045a, "QMS Printers" },
1016 { 0x045b, "DellSCSI Array" },
1017 { 0x0491, "NetBlazerModems" },
1018 { 0x04ac, "OnTimeScheduler" },
1019 { 0x04b0, "CD-Net" },
1020 { 0x0513, "EmulexNQA" },
1021 { 0x0520, "SiteLockChecks" },
1022 { 0x0529, "SiteLockChecks" },
1023 { 0x052d, "CitrixOS2 AppServer" },
1024 { 0x0535, "Tektronix" },
1025 { 0x0536, "Milan" },
1026 { 0x055d, "Attachmate SNA gateway" },
1027 { 0x056b, "IBM8235 ModemServer" },
1028 { 0x056c, "ShivaLanRover/E PLUS" },
1029 { 0x056d, "ShivaLanRover/T PLUS" },
1030 { 0x0580, "McAfeeNetShield" },
1031 { 0x05B8, "NLM to workstation communication (Revelation Software)" },
1032 { 0x05BA, "CompatibleSystemsRouters" },
1033 { 0x05BE, "CheyenneHierarchicalStorageManager" },
1034 { 0x0606, "JCWatermarkImaging" },
1035 { 0x060c, "AXISNetworkPrinter" },
1036 { 0x0610, "AdaptecSCSIManagement" },
1037 { 0x0621, "IBM AntiVirus" },
1038 { 0x0640, "Windows95 RemoteRegistryService" },
1039 { 0x064e, "MicrosoftIIS" },
1040 { 0x067b, "Microsoft Win95/98 File and Print Sharing for NetWare" },
1041 { 0x067c, "Microsoft Win95/98 File and Print Sharing for NetWare" },
1042 { 0x076C, "Xerox" },
1043 { 0x079b, "ShivaLanRover/E 115" },
1044 { 0x079c, "ShivaLanRover/T 115" },
1045 { 0x07B4, "CubixWorldDesk" },
1046 { 0x07c2, "Quarterdeck IWare Connect V2.x NLM" },
1047 { 0x07c1, "Quarterdeck IWare Connect V3.x NLM" },
1048 { 0x0810, "ELAN License Server Demo" },
1049 { 0x0824, "ShivaLanRoverAccessSwitch/E" },
1050 { 0x086a, "ISSC Collector" },
1051 { 0x087f, "ISSC DAS AgentAIX" },
1052 { 0x0880, "Intel Netport PRO" },
1053 { 0x0881, "Intel Netport PRO" },
1054 { 0x0b29, "SiteLock" },
1055 { 0x0c29, "SiteLockApplications" },
1056 { 0x0c2c, "LicensingServer" },
1057 { 0x2101, "PerformanceTechnologyInstantInternet" },
1058 { 0x2380, "LAI SiteLock" },
1059 { 0x238c, "MeetingMaker" },
1060 { 0x4808, "SiteLockServer/SiteLockMetering" },
1061 { 0x5555, "SiteLockUser" },
1062 { 0x6312, "Tapeware" },
1063 { 0x6f00, "RabbitGateway" },
1064 { 0x7703, "MODEM" },
1065 { 0x8002, "NetPortPrinters" },
1066 { 0x8008, "WordPerfectNetworkVersion" },
1067 { 0x85BE, "Cisco EIGRP" },
1068 { 0x8888, "WordPerfectNetworkVersion/QuickNetworkManagement" },
1069 { 0x9000, "McAfeeNetShield" },
1070 { 0x9604, "CSA-NT_MON" },
1071 { 0xb6a8, "OceanIsleReachoutRemoteControl" },
1072 { 0xf11f, "SiteLockMetering" },
1073 { 0xf1ff, "SiteLock" },
1074 { 0xf503, "Microsoft SQL Server" },
1075 { 0xF905, "IBM TimeAndPlace" },
1076 { 0xfbfb, "TopCallIII FaxServer" },
1077 { 0xffff, "AnyService/Wildcard" },
1078 { 0, (char *)0 }
1079};
1080
1081static void
1082init_ipxsaparray(void)
1083{
1084 register int i;
1085 register struct hnamemem *table;
1086
1087 for (i = 0; ipxsap_db[i].s != NULL; i++) {
1088 int j = htons(ipxsap_db[i].v) & (HASHNAMESIZE-1);
1089 table = &ipxsaptable[j];
1090 while (table->name)
1091 table = table->nxt;
1092 table->name = ipxsap_db[i].s;
1093 table->addr = htons(ipxsap_db[i].v);
1094 table->nxt = newhnamemem();
1095 }
1096}
1097
1098/*
1099 * Initialize the address to name translation machinery. We map all
1100 * non-local IP addresses to numeric addresses if fflag is true (i.e.,
1101 * to prevent blocking on the nameserver). localnet is the IP address
1102 * of the local network. mask is its subnet mask.
1103 */
1104void
1105init_addrtoname(u_int32_t localnet, u_int32_t mask)
1106{
1107 if (fflag) {
1108 f_localnet = localnet;
1109 f_netmask = mask;
1110 }
1111 if (nflag)
1112 /*
1113 * Simplest way to suppress names.
1114 */
1115 return;
1116
1117 init_etherarray();
1118 init_servarray();
1119 init_eprotoarray();
1120 init_protoidarray();
1121 init_ipxsaparray();
1122}
1123
1124const char *
1125dnaddr_string(u_short dnaddr)
1126{
1127 register struct hnamemem *tp;
1128
1129 for (tp = &dnaddrtable[dnaddr & (HASHNAMESIZE-1)]; tp->nxt != 0;
1130 tp = tp->nxt)
1131 if (tp->addr == dnaddr)
1132 return (tp->name);
1133
1134 tp->addr = dnaddr;
1135 tp->nxt = newhnamemem();
1136 if (nflag)
1137 tp->name = dnnum_string(dnaddr);
1138 else
1139 tp->name = dnname_string(dnaddr);
1140
1141 return(tp->name);
1142}
1143
1144/* Return a zero'ed hnamemem struct and cuts down on calloc() overhead */
1145struct hnamemem *
1146newhnamemem(void)
1147{
1148 register struct hnamemem *p;
1149 static struct hnamemem *ptr = NULL;
1150 static u_int num = 0;
1151
1152 if (num <= 0) {
1153 num = 64;
1154 ptr = (struct hnamemem *)calloc(num, sizeof (*ptr));
1155 if (ptr == NULL)
1156 error("newhnamemem: calloc");
1157 }
1158 --num;
1159 p = ptr++;
1160 return (p);
1161}
1162
1163#ifdef INET6
1164/* Return a zero'ed h6namemem struct and cuts down on calloc() overhead */
1165struct h6namemem *
1166newh6namemem(void)
1167{
1168 register struct h6namemem *p;
1169 static struct h6namemem *ptr = NULL;
1170 static u_int num = 0;
1171
1172 if (num <= 0) {
1173 num = 64;
1174 ptr = (struct h6namemem *)calloc(num, sizeof (*ptr));
1175 if (ptr == NULL)
1176 error("newh6namemem: calloc");
1177 }
1178 --num;
1179 p = ptr++;
1180 return (p);
1181}
1182#endif /* INET6 */