Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / addrtoname.c
CommitLineData
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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_ =
825e8fa1 26 "@(#) $Header: /tcpdump/master/tcpdump/addrtoname.c,v 1.108.2.9 2007/09/14 00:26:18 guy Exp $ (LBL)";
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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
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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
82#define BUFSIZE 128
83
84struct hnamemem {
85 u_int32_t addr;
86 const char *name;
87 struct hnamemem *nxt;
88};
89
90struct hnamemem hnametable[HASHNAMESIZE];
91struct hnamemem tporttable[HASHNAMESIZE];
92struct hnamemem uporttable[HASHNAMESIZE];
93struct hnamemem eprototable[HASHNAMESIZE];
94struct hnamemem dnaddrtable[HASHNAMESIZE];
95struct hnamemem ipxsaptable[HASHNAMESIZE];
96
97#if defined(INET6) && defined(WIN32)
98/*
99 * fake gethostbyaddr for Win2k/XP
100 * gethostbyaddr() returns incorrect value when AF_INET6 is passed
101 * to 3rd argument.
102 *
103 * h_name in struct hostent is only valid.
104 */
105static struct hostent *
106win32_gethostbyaddr(const char *addr, int len, int type)
107{
108 static struct hostent host;
109 static char hostbuf[NI_MAXHOST];
110 char hname[NI_MAXHOST];
111 struct sockaddr_in6 addr6;
112
113 host.h_name = hostbuf;
114 switch (type) {
115 case AF_INET:
116 return gethostbyaddr(addr, len, type);
117 break;
118 case AF_INET6:
119 memset(&addr6, 0, sizeof(addr6));
120 addr6.sin6_family = AF_INET6;
121 memcpy(&addr6.sin6_addr, addr, len);
122 if (getnameinfo((struct sockaddr *)&addr6, sizeof(addr6),
123 hname, sizeof(hname), NULL, 0, 0)) {
124 return NULL;
125 } else {
126 strcpy(host.h_name, hname);
127 return &host;
128 }
129 break;
130 default:
131 return NULL;
132 }
133}
134#define gethostbyaddr win32_gethostbyaddr
135#endif /* INET6 & WIN32 */
136
137#ifdef INET6
138struct h6namemem {
139 struct in6_addr addr;
140 char *name;
141 struct h6namemem *nxt;
142};
143
144struct h6namemem h6nametable[HASHNAMESIZE];
145#endif /* INET6 */
146
147struct enamemem {
148 u_short e_addr0;
149 u_short e_addr1;
150 u_short e_addr2;
151 const char *e_name;
152 u_char *e_nsap; /* used only for nsaptable[] */
153#define e_bs e_nsap /* for bytestringtable */
154 struct enamemem *e_nxt;
155};
156
157struct enamemem enametable[HASHNAMESIZE];
158struct enamemem nsaptable[HASHNAMESIZE];
159struct enamemem bytestringtable[HASHNAMESIZE];
160
161struct protoidmem {
162 u_int32_t p_oui;
163 u_short p_proto;
164 const char *p_name;
165 struct protoidmem *p_nxt;
166};
167
168struct protoidmem protoidtable[HASHNAMESIZE];
169
170/*
171 * A faster replacement for inet_ntoa().
172 */
173const char *
174intoa(u_int32_t addr)
175{
176 register char *cp;
177 register u_int byte;
178 register int n;
179 static char buf[sizeof(".xxx.xxx.xxx.xxx")];
180
181 NTOHL(addr);
182 cp = buf + sizeof(buf);
183 *--cp = '\0';
184
185 n = 4;
186 do {
187 byte = addr & 0xff;
188 *--cp = byte % 10 + '0';
189 byte /= 10;
190 if (byte > 0) {
191 *--cp = byte % 10 + '0';
192 byte /= 10;
193 if (byte > 0)
194 *--cp = byte + '0';
195 }
196 *--cp = '.';
197 addr >>= 8;
198 } while (--n > 0);
199
200 return cp + 1;
201}
202
203static u_int32_t f_netmask;
204static u_int32_t f_localnet;
205
206/*
207 * Return a name for the IP address pointed to by ap. This address
208 * is assumed to be in network byte order.
209 *
210 * NOTE: ap is *NOT* necessarily part of the packet data (not even if
211 * this is being called with the "ipaddr_string()" macro), so you
212 * *CANNOT* use the TCHECK{2}/TTEST{2} macros on it. Furthermore,
213 * even in cases where it *is* part of the packet data, the caller
214 * would still have to check for a null return value, even if it's
215 * just printing the return value with "%s" - not all versions of
216 * printf print "(null)" with "%s" and a null pointer, some of them
217 * don't check for a null pointer and crash in that case.
218 *
219 * The callers of this routine should, before handing this routine
220 * a pointer to packet data, be sure that the data is present in
221 * the packet buffer. They should probably do those checks anyway,
222 * as other data at that layer might not be IP addresses, and it
223 * also needs to check whether they're present in the packet buffer.
224 */
225const char *
226getname(const u_char *ap)
227{
228 register struct hostent *hp;
229 u_int32_t addr;
230 static struct hnamemem *p; /* static for longjmp() */
231
232 memcpy(&addr, ap, sizeof(addr));
233 p = &hnametable[addr & (HASHNAMESIZE-1)];
234 for (; p->nxt; p = p->nxt) {
235 if (p->addr == addr)
236 return (p->name);
237 }
238 p->addr = addr;
239 p->nxt = newhnamemem();
240
241 /*
242 * Print names unless:
243 * (1) -n was given.
244 * (2) Address is foreign and -f was given. (If -f was not
245 * given, f_netmask and f_localnet are 0 and the test
246 * evaluates to true)
247 */
248 if (!nflag &&
249 (addr & f_netmask) == f_localnet) {
250 hp = gethostbyaddr((char *)&addr, 4, AF_INET);
251 if (hp) {
252 char *dotp;
253
254 p->name = strdup(hp->h_name);
255 if (Nflag) {
256 /* Remove domain qualifications */
257 dotp = strchr(p->name, '.');
258 if (dotp)
259 *dotp = '\0';
260 }
261 return (p->name);
262 }
263 }
264 p->name = strdup(intoa(addr));
265 return (p->name);
266}
267
268#ifdef INET6
269/*
270 * Return a name for the IP6 address pointed to by ap. This address
271 * is assumed to be in network byte order.
272 */
273const char *
274getname6(const u_char *ap)
275{
276 register struct hostent *hp;
277 struct in6_addr addr;
278 static struct h6namemem *p; /* static for longjmp() */
279 register const char *cp;
280 char ntop_buf[INET6_ADDRSTRLEN];
281
282 memcpy(&addr, ap, sizeof(addr));
283 p = &h6nametable[*(u_int16_t *)&addr.s6_addr[14] & (HASHNAMESIZE-1)];
284 for (; p->nxt; p = p->nxt) {
285 if (memcmp(&p->addr, &addr, sizeof(addr)) == 0)
286 return (p->name);
287 }
288 p->addr = addr;
289 p->nxt = newh6namemem();
290
291 /*
292 * Do not print names if -n was given.
293 */
294 if (!nflag) {
295 hp = gethostbyaddr((char *)&addr, sizeof(addr), AF_INET6);
296 if (hp) {
297 char *dotp;
298
299 p->name = strdup(hp->h_name);
300 if (Nflag) {
301 /* Remove domain qualifications */
302 dotp = strchr(p->name, '.');
303 if (dotp)
304 *dotp = '\0';
305 }
306 return (p->name);
307 }
308 }
309 cp = inet_ntop(AF_INET6, &addr, ntop_buf, sizeof(ntop_buf));
310 p->name = strdup(cp);
311 return (p->name);
312}
313#endif /* INET6 */
314
315static char hex[] = "0123456789abcdef";
316
317
318/* Find the hash node that corresponds the ether address 'ep' */
319
320static inline struct enamemem *
321lookup_emem(const u_char *ep)
322{
323 register u_int i, j, k;
324 struct enamemem *tp;
325
326 k = (ep[0] << 8) | ep[1];
327 j = (ep[2] << 8) | ep[3];
328 i = (ep[4] << 8) | ep[5];
329
330 tp = &enametable[(i ^ j) & (HASHNAMESIZE-1)];
331 while (tp->e_nxt)
332 if (tp->e_addr0 == i &&
333 tp->e_addr1 == j &&
334 tp->e_addr2 == k)
335 return tp;
336 else
337 tp = tp->e_nxt;
338 tp->e_addr0 = i;
339 tp->e_addr1 = j;
340 tp->e_addr2 = k;
341 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp));
342 if (tp->e_nxt == NULL)
343 error("lookup_emem: calloc");
344
345 return tp;
346}
347
348/*
349 * Find the hash node that corresponds to the bytestring 'bs'
350 * with length 'nlen'
351 */
352
353static inline struct enamemem *
354lookup_bytestring(register const u_char *bs, const unsigned int nlen)
355{
356 struct enamemem *tp;
357 register u_int i, j, k;
358
359 if (nlen >= 6) {
360 k = (bs[0] << 8) | bs[1];
361 j = (bs[2] << 8) | bs[3];
362 i = (bs[4] << 8) | bs[5];
363 } else if (nlen >= 4) {
364 k = (bs[0] << 8) | bs[1];
365 j = (bs[2] << 8) | bs[3];
366 i = 0;
367 } else
368 i = j = k = 0;
369
370 tp = &bytestringtable[(i ^ j) & (HASHNAMESIZE-1)];
371 while (tp->e_nxt)
372 if (tp->e_addr0 == i &&
373 tp->e_addr1 == j &&
374 tp->e_addr2 == k &&
375 memcmp((const char *)bs, (const char *)(tp->e_bs), nlen) == 0)
376 return tp;
377 else
378 tp = tp->e_nxt;
379
380 tp->e_addr0 = i;
381 tp->e_addr1 = j;
382 tp->e_addr2 = k;
383
384 tp->e_bs = (u_char *) calloc(1, nlen + 1);
385 memcpy(tp->e_bs, bs, nlen);
386 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp));
387 if (tp->e_nxt == NULL)
388 error("lookup_bytestring: calloc");
389
390 return tp;
391}
392
393/* Find the hash node that corresponds the NSAP 'nsap' */
394
395static inline struct enamemem *
396lookup_nsap(register const u_char *nsap)
397{
398 register u_int i, j, k;
399 unsigned int nlen = *nsap;
400 struct enamemem *tp;
401 const u_char *ensap = nsap + nlen - 6;
402
403 if (nlen > 6) {
404 k = (ensap[0] << 8) | ensap[1];
405 j = (ensap[2] << 8) | ensap[3];
406 i = (ensap[4] << 8) | ensap[5];
407 }
408 else
409 i = j = k = 0;
410
411 tp = &nsaptable[(i ^ j) & (HASHNAMESIZE-1)];
412 while (tp->e_nxt)
413 if (tp->e_addr0 == i &&
414 tp->e_addr1 == j &&
415 tp->e_addr2 == k &&
416 tp->e_nsap[0] == nlen &&
417 memcmp((const char *)&(nsap[1]),
418 (char *)&(tp->e_nsap[1]), nlen) == 0)
419 return tp;
420 else
421 tp = tp->e_nxt;
422 tp->e_addr0 = i;
423 tp->e_addr1 = j;
424 tp->e_addr2 = k;
425 tp->e_nsap = (u_char *)malloc(nlen + 1);
426 if (tp->e_nsap == NULL)
427 error("lookup_nsap: malloc");
428 memcpy((char *)tp->e_nsap, (const char *)nsap, nlen + 1);
429 tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp));
430 if (tp->e_nxt == NULL)
431 error("lookup_nsap: calloc");
432
433 return tp;
434}
435
436/* Find the hash node that corresponds the protoid 'pi'. */
437
438static inline struct protoidmem *
439lookup_protoid(const u_char *pi)
440{
441 register u_int i, j;
442 struct protoidmem *tp;
443
444 /* 5 octets won't be aligned */
445 i = (((pi[0] << 8) + pi[1]) << 8) + pi[2];
446 j = (pi[3] << 8) + pi[4];
447 /* XXX should be endian-insensitive, but do big-endian testing XXX */
448
449 tp = &protoidtable[(i ^ j) & (HASHNAMESIZE-1)];
450 while (tp->p_nxt)
451 if (tp->p_oui == i && tp->p_proto == j)
452 return tp;
453 else
454 tp = tp->p_nxt;
455 tp->p_oui = i;
456 tp->p_proto = j;
457 tp->p_nxt = (struct protoidmem *)calloc(1, sizeof(*tp));
458 if (tp->p_nxt == NULL)
459 error("lookup_protoid: calloc");
460
461 return tp;
462}
463
464const char *
465etheraddr_string(register const u_char *ep)
466{
467 register int i;
468 register char *cp;
469 register struct enamemem *tp;
470 int oui;
471 char buf[BUFSIZE];
472
473 tp = lookup_emem(ep);
474 if (tp->e_name)
475 return (tp->e_name);
476#ifdef USE_ETHER_NTOHOST
477 if (!nflag) {
478 char buf2[BUFSIZE];
479
480 /*
481 * We don't cast it to "const struct ether_addr *"
482 * because some systems fail to declare the second
483 * argument as a "const" pointer, even though they
484 * don't modify what it points to.
485 */
486 if (ether_ntohost(buf2, (struct ether_addr *)ep) == 0) {
487 tp->e_name = strdup(buf2);
488 return (tp->e_name);
489 }
490 }
491#endif
492 cp = buf;
493 oui = EXTRACT_24BITS(ep);
494 *cp++ = hex[*ep >> 4 ];
495 *cp++ = hex[*ep++ & 0xf];
496 for (i = 5; --i >= 0;) {
497 *cp++ = ':';
498 *cp++ = hex[*ep >> 4 ];
499 *cp++ = hex[*ep++ & 0xf];
500 }
501
502 if (!nflag) {
503 snprintf(cp, BUFSIZE - (2 + 5*3), " (oui %s)",
504 tok2str(oui_values, "Unknown", oui));
505 } else
506 *cp = '\0';
507 tp->e_name = strdup(buf);
508 return (tp->e_name);
509}
510
511const char *
512linkaddr_string(const u_char *ep, const unsigned int len)
513{
514 register u_int i;
515 register char *cp;
516 register struct enamemem *tp;
517
825e8fa1 518 if (len == ETHER_ADDR_LEN) /* XXX not totally correct... */
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519 return etheraddr_string(ep);
520
521 tp = lookup_bytestring(ep, len);
522 if (tp->e_name)
523 return (tp->e_name);
524
525 tp->e_name = cp = (char *)malloc(len*3);
526 if (tp->e_name == NULL)
527 error("linkaddr_string: malloc");
528 *cp++ = hex[*ep >> 4];
529 *cp++ = hex[*ep++ & 0xf];
530 for (i = len-1; i > 0 ; --i) {
531 *cp++ = ':';
532 *cp++ = hex[*ep >> 4];
533 *cp++ = hex[*ep++ & 0xf];
534 }
535 *cp = '\0';
536 return (tp->e_name);
537}
538
539const char *
540etherproto_string(u_short port)
541{
542 register char *cp;
543 register struct hnamemem *tp;
544 register u_int32_t i = port;
545 char buf[sizeof("0000")];
546
547 for (tp = &eprototable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
548 if (tp->addr == i)
549 return (tp->name);
550
551 tp->addr = i;
552 tp->nxt = newhnamemem();
553
554 cp = buf;
555 NTOHS(port);
556 *cp++ = hex[port >> 12 & 0xf];
557 *cp++ = hex[port >> 8 & 0xf];
558 *cp++ = hex[port >> 4 & 0xf];
559 *cp++ = hex[port & 0xf];
560 *cp++ = '\0';
561 tp->name = strdup(buf);
562 return (tp->name);
563}
564
565const char *
566protoid_string(register const u_char *pi)
567{
568 register u_int i, j;
569 register char *cp;
570 register struct protoidmem *tp;
571 char buf[sizeof("00:00:00:00:00")];
572
573 tp = lookup_protoid(pi);
574 if (tp->p_name)
575 return tp->p_name;
576
577 cp = buf;
578 if ((j = *pi >> 4) != 0)
579 *cp++ = hex[j];
580 *cp++ = hex[*pi++ & 0xf];
581 for (i = 4; (int)--i >= 0;) {
582 *cp++ = ':';
583 if ((j = *pi >> 4) != 0)
584 *cp++ = hex[j];
585 *cp++ = hex[*pi++ & 0xf];
586 }
587 *cp = '\0';
588 tp->p_name = strdup(buf);
589 return (tp->p_name);
590}
591
592#define ISONSAP_MAX_LENGTH 20
593const char *
594isonsap_string(const u_char *nsap, register u_int nsap_length)
595{
596 register u_int nsap_idx;
597 register char *cp;
598 register struct enamemem *tp;
599
600 if (nsap_length < 1 || nsap_length > ISONSAP_MAX_LENGTH)
601 return ("isonsap_string: illegal length");
602
603 tp = lookup_nsap(nsap);
604 if (tp->e_name)
605 return tp->e_name;
606
607 tp->e_name = cp = (char *)malloc(sizeof("xx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xx"));
608 if (cp == NULL)
609 error("isonsap_string: malloc");
610
611 for (nsap_idx = 0; nsap_idx < nsap_length; nsap_idx++) {
612 *cp++ = hex[*nsap >> 4];
613 *cp++ = hex[*nsap++ & 0xf];
614 if (((nsap_idx & 1) == 0) &&
615 (nsap_idx + 1 < nsap_length)) {
616 *cp++ = '.';
617 }
618 }
619 *cp = '\0';
620 return (tp->e_name);
621}
622
623const char *
624tcpport_string(u_short port)
625{
626 register struct hnamemem *tp;
627 register u_int32_t i = port;
628 char buf[sizeof("00000")];
629
630 for (tp = &tporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
631 if (tp->addr == i)
632 return (tp->name);
633
634 tp->addr = i;
635 tp->nxt = newhnamemem();
636
637 (void)snprintf(buf, sizeof(buf), "%u", i);
638 tp->name = strdup(buf);
639 return (tp->name);
640}
641
642const char *
643udpport_string(register u_short port)
644{
645 register struct hnamemem *tp;
646 register u_int32_t i = port;
647 char buf[sizeof("00000")];
648
649 for (tp = &uporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
650 if (tp->addr == i)
651 return (tp->name);
652
653 tp->addr = i;
654 tp->nxt = newhnamemem();
655
656 (void)snprintf(buf, sizeof(buf), "%u", i);
657 tp->name = strdup(buf);
658 return (tp->name);
659}
660
661const char *
662ipxsap_string(u_short port)
663{
664 register char *cp;
665 register struct hnamemem *tp;
666 register u_int32_t i = port;
667 char buf[sizeof("0000")];
668
669 for (tp = &ipxsaptable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
670 if (tp->addr == i)
671 return (tp->name);
672
673 tp->addr = i;
674 tp->nxt = newhnamemem();
675
676 cp = buf;
677 NTOHS(port);
678 *cp++ = hex[port >> 12 & 0xf];
679 *cp++ = hex[port >> 8 & 0xf];
680 *cp++ = hex[port >> 4 & 0xf];
681 *cp++ = hex[port & 0xf];
682 *cp++ = '\0';
683 tp->name = strdup(buf);
684 return (tp->name);
685}
686
687static void
688init_servarray(void)
689{
690 struct servent *sv;
691 register struct hnamemem *table;
692 register int i;
693 char buf[sizeof("0000000000")];
694
695 while ((sv = getservent()) != NULL) {
696 int port = ntohs(sv->s_port);
697 i = port & (HASHNAMESIZE-1);
698 if (strcmp(sv->s_proto, "tcp") == 0)
699 table = &tporttable[i];
700 else if (strcmp(sv->s_proto, "udp") == 0)
701 table = &uporttable[i];
702 else
703 continue;
704
705 while (table->name)
706 table = table->nxt;
707 if (nflag) {
708 (void)snprintf(buf, sizeof(buf), "%d", port);
709 table->name = strdup(buf);
710 } else
711 table->name = strdup(sv->s_name);
712 table->addr = port;
713 table->nxt = newhnamemem();
714 }
715 endservent();
716}
717
718/* in libpcap.a (nametoaddr.c) */
719#if defined(WIN32) && !defined(USE_STATIC_LIBPCAP)
720__declspec(dllimport)
721#else
722extern
723#endif
724const struct eproto {
725 const char *s;
726 u_short p;
727} eproto_db[];
728
729static void
730init_eprotoarray(void)
731{
732 register int i;
733 register struct hnamemem *table;
734
735 for (i = 0; eproto_db[i].s; i++) {
736 int j = htons(eproto_db[i].p) & (HASHNAMESIZE-1);
737 table = &eprototable[j];
738 while (table->name)
739 table = table->nxt;
740 table->name = eproto_db[i].s;
741 table->addr = htons(eproto_db[i].p);
742 table->nxt = newhnamemem();
743 }
744}
745
746static struct protoidlist {
747 const u_char protoid[5];
748 const char *name;
749} protoidlist[] = {
750 {{ 0x00, 0x00, 0x0c, 0x01, 0x07 }, "CiscoMLS" },
751 {{ 0x00, 0x00, 0x0c, 0x20, 0x00 }, "CiscoCDP" },
752 {{ 0x00, 0x00, 0x0c, 0x20, 0x01 }, "CiscoCGMP" },
753 {{ 0x00, 0x00, 0x0c, 0x20, 0x03 }, "CiscoVTP" },
754 {{ 0x00, 0xe0, 0x2b, 0x00, 0xbb }, "ExtremeEDP" },
755 {{ 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL }
756};
757
758/*
759 * SNAP proto IDs with org code 0:0:0 are actually encapsulated Ethernet
760 * types.
761 */
762static void
763init_protoidarray(void)
764{
765 register int i;
766 register struct protoidmem *tp;
767 struct protoidlist *pl;
768 u_char protoid[5];
769
770 protoid[0] = 0;
771 protoid[1] = 0;
772 protoid[2] = 0;
773 for (i = 0; eproto_db[i].s; i++) {
774 u_short etype = htons(eproto_db[i].p);
775
776 memcpy((char *)&protoid[3], (char *)&etype, 2);
777 tp = lookup_protoid(protoid);
778 tp->p_name = strdup(eproto_db[i].s);
779 }
780 /* Hardwire some SNAP proto ID names */
781 for (pl = protoidlist; pl->name != NULL; ++pl) {
782 tp = lookup_protoid(pl->protoid);
783 /* Don't override existing name */
784 if (tp->p_name != NULL)
785 continue;
786
787 tp->p_name = pl->name;
788 }
789}
790
791static struct etherlist {
792 const u_char addr[6];
793 const char *name;
794} etherlist[] = {
795 {{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, "Broadcast" },
796 {{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL }
797};
798
799/*
800 * Initialize the ethers hash table. We take two different approaches
801 * depending on whether or not the system provides the ethers name
802 * service. If it does, we just wire in a few names at startup,
803 * and etheraddr_string() fills in the table on demand. If it doesn't,
804 * then we suck in the entire /etc/ethers file at startup. The idea
805 * is that parsing the local file will be fast, but spinning through
806 * all the ethers entries via NIS & next_etherent might be very slow.
807 *
808 * XXX pcap_next_etherent doesn't belong in the pcap interface, but
809 * since the pcap module already does name-to-address translation,
810 * it's already does most of the work for the ethernet address-to-name
811 * translation, so we just pcap_next_etherent as a convenience.
812 */
813static void
814init_etherarray(void)
815{
816 register struct etherlist *el;
817 register struct enamemem *tp;
818#ifdef USE_ETHER_NTOHOST
819 char name[256];
820#else
821 register struct pcap_etherent *ep;
822 register FILE *fp;
823
824 /* Suck in entire ethers file */
825 fp = fopen(PCAP_ETHERS_FILE, "r");
826 if (fp != NULL) {
827 while ((ep = pcap_next_etherent(fp)) != NULL) {
828 tp = lookup_emem(ep->addr);
829 tp->e_name = strdup(ep->name);
830 }
831 (void)fclose(fp);
832 }
833#endif
834
835 /* Hardwire some ethernet names */
836 for (el = etherlist; el->name != NULL; ++el) {
837 tp = lookup_emem(el->addr);
838 /* Don't override existing name */
839 if (tp->e_name != NULL)
840 continue;
841
842#ifdef USE_ETHER_NTOHOST
843 /*
844 * Use YP/NIS version of name if available.
845 *
846 * We don't cast it to "const struct ether_addr *"
847 * because some systems don't modify the Ethernet
848 * address but fail to declare the second argument
849 * as a "const" pointer.
850 */
851 if (ether_ntohost(name, (struct ether_addr *)el->addr) == 0) {
852 tp->e_name = strdup(name);
853 continue;
854 }
855#endif
856 tp->e_name = el->name;
857 }
858}
859
860static struct tok ipxsap_db[] = {
861 { 0x0000, "Unknown" },
862 { 0x0001, "User" },
863 { 0x0002, "User Group" },
864 { 0x0003, "PrintQueue" },
865 { 0x0004, "FileServer" },
866 { 0x0005, "JobServer" },
867 { 0x0006, "Gateway" },
868 { 0x0007, "PrintServer" },
869 { 0x0008, "ArchiveQueue" },
870 { 0x0009, "ArchiveServer" },
871 { 0x000a, "JobQueue" },
872 { 0x000b, "Administration" },
873 { 0x000F, "Novell TI-RPC" },
874 { 0x0017, "Diagnostics" },
875 { 0x0020, "NetBIOS" },
876 { 0x0021, "NAS SNA Gateway" },
877 { 0x0023, "NACS AsyncGateway" },
878 { 0x0024, "RemoteBridge/RoutingService" },
879 { 0x0026, "BridgeServer" },
880 { 0x0027, "TCP/IP Gateway" },
881 { 0x0028, "Point-to-point X.25 BridgeServer" },
882 { 0x0029, "3270 Gateway" },
883 { 0x002a, "CHI Corp" },
884 { 0x002c, "PC Chalkboard" },
885 { 0x002d, "TimeSynchServer" },
886 { 0x002e, "ARCserve5.0/PalindromeBackup" },
887 { 0x0045, "DI3270 Gateway" },
888 { 0x0047, "AdvertisingPrintServer" },
889 { 0x004a, "NetBlazerModems" },
890 { 0x004b, "BtrieveVAP" },
891 { 0x004c, "NetwareSQL" },
892 { 0x004d, "XtreeNetwork" },
893 { 0x0050, "BtrieveVAP4.11" },
894 { 0x0052, "QuickLink" },
895 { 0x0053, "PrintQueueUser" },
896 { 0x0058, "Multipoint X.25 Router" },
897 { 0x0060, "STLB/NLM" },
898 { 0x0064, "ARCserve" },
899 { 0x0066, "ARCserve3.0" },
900 { 0x0072, "WAN CopyUtility" },
901 { 0x007a, "TES-NetwareVMS" },
902 { 0x0092, "WATCOM Debugger/EmeraldTapeBackupServer" },
903 { 0x0095, "DDA OBGYN" },
904 { 0x0098, "NetwareAccessServer" },
905 { 0x009a, "Netware for VMS II/NamedPipeServer" },
906 { 0x009b, "NetwareAccessServer" },
907 { 0x009e, "PortableNetwareServer/SunLinkNVT" },
908 { 0x00a1, "PowerchuteAPC UPS" },
909 { 0x00aa, "LAWserve" },
910 { 0x00ac, "CompaqIDA StatusMonitor" },
911 { 0x0100, "PIPE STAIL" },
912 { 0x0102, "LAN ProtectBindery" },
913 { 0x0103, "OracleDataBaseServer" },
914 { 0x0107, "Netware386/RSPX RemoteConsole" },
915 { 0x010f, "NovellSNA Gateway" },
916 { 0x0111, "TestServer" },
917 { 0x0112, "HP PrintServer" },
918 { 0x0114, "CSA MUX" },
919 { 0x0115, "CSA LCA" },
920 { 0x0116, "CSA CM" },
921 { 0x0117, "CSA SMA" },
922 { 0x0118, "CSA DBA" },
923 { 0x0119, "CSA NMA" },
924 { 0x011a, "CSA SSA" },
925 { 0x011b, "CSA STATUS" },
926 { 0x011e, "CSA APPC" },
927 { 0x0126, "SNA TEST SSA Profile" },
928 { 0x012a, "CSA TRACE" },
929 { 0x012b, "NetwareSAA" },
930 { 0x012e, "IKARUS VirusScan" },
931 { 0x0130, "CommunicationsExecutive" },
932 { 0x0133, "NNS DomainServer/NetwareNamingServicesDomain" },
933 { 0x0135, "NetwareNamingServicesProfile" },
934 { 0x0137, "Netware386 PrintQueue/NNS PrintQueue" },
935 { 0x0141, "LAN SpoolServer" },
936 { 0x0152, "IRMALAN Gateway" },
937 { 0x0154, "NamedPipeServer" },
938 { 0x0166, "NetWareManagement" },
939 { 0x0168, "Intel PICKIT CommServer/Intel CAS TalkServer" },
940 { 0x0173, "Compaq" },
941 { 0x0174, "Compaq SNMP Agent" },
942 { 0x0175, "Compaq" },
943 { 0x0180, "XTreeServer/XTreeTools" },
944 { 0x018A, "NASI ServicesBroadcastServer" },
945 { 0x01b0, "GARP Gateway" },
946 { 0x01b1, "Binfview" },
947 { 0x01bf, "IntelLanDeskManager" },
948 { 0x01ca, "AXTEC" },
949 { 0x01cb, "ShivaNetModem/E" },
950 { 0x01cc, "ShivaLanRover/E" },
951 { 0x01cd, "ShivaLanRover/T" },
952 { 0x01ce, "ShivaUniversal" },
953 { 0x01d8, "CastelleFAXPressServer" },
954 { 0x01da, "CastelleLANPressPrintServer" },
955 { 0x01dc, "CastelleFAX/Xerox7033 FaxServer/ExcelLanFax" },
956 { 0x01f0, "LEGATO" },
957 { 0x01f5, "LEGATO" },
958 { 0x0233, "NMS Agent/NetwareManagementAgent" },
959 { 0x0237, "NMS IPX Discovery/LANternReadWriteChannel" },
960 { 0x0238, "NMS IP Discovery/LANternTrapAlarmChannel" },
961 { 0x023a, "LANtern" },
962 { 0x023c, "MAVERICK" },
963 { 0x023f, "NovellSMDR" },
964 { 0x024e, "NetwareConnect" },
965 { 0x024f, "NASI ServerBroadcast Cisco" },
966 { 0x026a, "NMS ServiceConsole" },
967 { 0x026b, "TimeSynchronizationServer Netware 4.x" },
968 { 0x0278, "DirectoryServer Netware 4.x" },
969 { 0x027b, "NetwareManagementAgent" },
970 { 0x0280, "Novell File and Printer Sharing Service for PC" },
971 { 0x0304, "NovellSAA Gateway" },
972 { 0x0308, "COM/VERMED" },
973 { 0x030a, "GalacticommWorldgroupServer" },
974 { 0x030c, "IntelNetport2/HP JetDirect/HP Quicksilver" },
975 { 0x0320, "AttachmateGateway" },
976 { 0x0327, "MicrosoftDiagnostiocs" },
977 { 0x0328, "WATCOM SQL Server" },
978 { 0x0335, "MultiTechSystems MultisynchCommServer" },
979 { 0x0343, "Xylogics RemoteAccessServer/LANModem" },
980 { 0x0355, "ArcadaBackupExec" },
981 { 0x0358, "MSLCD1" },
982 { 0x0361, "NETINELO" },
983 { 0x037e, "Powerchute UPS Monitoring" },
984 { 0x037f, "ViruSafeNotify" },
985 { 0x0386, "HP Bridge" },
986 { 0x0387, "HP Hub" },
987 { 0x0394, "NetWare SAA Gateway" },
988 { 0x039b, "LotusNotes" },
989 { 0x03b7, "CertusAntiVirus" },
990 { 0x03c4, "ARCserve4.0" },
991 { 0x03c7, "LANspool3.5" },
992 { 0x03d7, "LexmarkPrinterServer" },
993 { 0x03d8, "LexmarkXLE PrinterServer" },
994 { 0x03dd, "BanyanENS NetwareClient" },
995 { 0x03de, "GuptaSequelBaseServer/NetWareSQL" },
996 { 0x03e1, "UnivelUnixware" },
997 { 0x03e4, "UnivelUnixware" },
998 { 0x03fc, "IntelNetport" },
999 { 0x03fd, "PrintServerQueue" },
1000 { 0x040A, "ipnServer" },
1001 { 0x040D, "LVERRMAN" },
1002 { 0x040E, "LVLIC" },
1003 { 0x0414, "NET Silicon (DPI)/Kyocera" },
1004 { 0x0429, "SiteLockVirus" },
1005 { 0x0432, "UFHELPR???" },
1006 { 0x0433, "Synoptics281xAdvancedSNMPAgent" },
1007 { 0x0444, "MicrosoftNT SNA Server" },
1008 { 0x0448, "Oracle" },
1009 { 0x044c, "ARCserve5.01" },
1010 { 0x0457, "CanonGP55" },
1011 { 0x045a, "QMS Printers" },
1012 { 0x045b, "DellSCSI Array" },
1013 { 0x0491, "NetBlazerModems" },
1014 { 0x04ac, "OnTimeScheduler" },
1015 { 0x04b0, "CD-Net" },
1016 { 0x0513, "EmulexNQA" },
1017 { 0x0520, "SiteLockChecks" },
1018 { 0x0529, "SiteLockChecks" },
1019 { 0x052d, "CitrixOS2 AppServer" },
1020 { 0x0535, "Tektronix" },
1021 { 0x0536, "Milan" },
1022 { 0x055d, "Attachmate SNA gateway" },
1023 { 0x056b, "IBM8235 ModemServer" },
1024 { 0x056c, "ShivaLanRover/E PLUS" },
1025 { 0x056d, "ShivaLanRover/T PLUS" },
1026 { 0x0580, "McAfeeNetShield" },
1027 { 0x05B8, "NLM to workstation communication (Revelation Software)" },
1028 { 0x05BA, "CompatibleSystemsRouters" },
1029 { 0x05BE, "CheyenneHierarchicalStorageManager" },
1030 { 0x0606, "JCWatermarkImaging" },
1031 { 0x060c, "AXISNetworkPrinter" },
1032 { 0x0610, "AdaptecSCSIManagement" },
1033 { 0x0621, "IBM AntiVirus" },
1034 { 0x0640, "Windows95 RemoteRegistryService" },
1035 { 0x064e, "MicrosoftIIS" },
1036 { 0x067b, "Microsoft Win95/98 File and Print Sharing for NetWare" },
1037 { 0x067c, "Microsoft Win95/98 File and Print Sharing for NetWare" },
1038 { 0x076C, "Xerox" },
1039 { 0x079b, "ShivaLanRover/E 115" },
1040 { 0x079c, "ShivaLanRover/T 115" },
1041 { 0x07B4, "CubixWorldDesk" },
1042 { 0x07c2, "Quarterdeck IWare Connect V2.x NLM" },
1043 { 0x07c1, "Quarterdeck IWare Connect V3.x NLM" },
1044 { 0x0810, "ELAN License Server Demo" },
1045 { 0x0824, "ShivaLanRoverAccessSwitch/E" },
1046 { 0x086a, "ISSC Collector" },
1047 { 0x087f, "ISSC DAS AgentAIX" },
1048 { 0x0880, "Intel Netport PRO" },
1049 { 0x0881, "Intel Netport PRO" },
1050 { 0x0b29, "SiteLock" },
1051 { 0x0c29, "SiteLockApplications" },
1052 { 0x0c2c, "LicensingServer" },
1053 { 0x2101, "PerformanceTechnologyInstantInternet" },
1054 { 0x2380, "LAI SiteLock" },
1055 { 0x238c, "MeetingMaker" },
1056 { 0x4808, "SiteLockServer/SiteLockMetering" },
1057 { 0x5555, "SiteLockUser" },
1058 { 0x6312, "Tapeware" },
1059 { 0x6f00, "RabbitGateway" },
1060 { 0x7703, "MODEM" },
1061 { 0x8002, "NetPortPrinters" },
1062 { 0x8008, "WordPerfectNetworkVersion" },
1063 { 0x85BE, "Cisco EIGRP" },
1064 { 0x8888, "WordPerfectNetworkVersion/QuickNetworkManagement" },
1065 { 0x9000, "McAfeeNetShield" },
1066 { 0x9604, "CSA-NT_MON" },
1067 { 0xb6a8, "OceanIsleReachoutRemoteControl" },
1068 { 0xf11f, "SiteLockMetering" },
1069 { 0xf1ff, "SiteLock" },
1070 { 0xf503, "Microsoft SQL Server" },
1071 { 0xF905, "IBM TimeAndPlace" },
1072 { 0xfbfb, "TopCallIII FaxServer" },
1073 { 0xffff, "AnyService/Wildcard" },
1074 { 0, (char *)0 }
1075};
1076
1077static void
1078init_ipxsaparray(void)
1079{
1080 register int i;
1081 register struct hnamemem *table;
1082
1083 for (i = 0; ipxsap_db[i].s != NULL; i++) {
1084 int j = htons(ipxsap_db[i].v) & (HASHNAMESIZE-1);
1085 table = &ipxsaptable[j];
1086 while (table->name)
1087 table = table->nxt;
1088 table->name = ipxsap_db[i].s;
1089 table->addr = htons(ipxsap_db[i].v);
1090 table->nxt = newhnamemem();
1091 }
1092}
1093
1094/*
1095 * Initialize the address to name translation machinery. We map all
1096 * non-local IP addresses to numeric addresses if fflag is true (i.e.,
1097 * to prevent blocking on the nameserver). localnet is the IP address
1098 * of the local network. mask is its subnet mask.
1099 */
1100void
1101init_addrtoname(u_int32_t localnet, u_int32_t mask)
1102{
1103 if (fflag) {
1104 f_localnet = localnet;
1105 f_netmask = mask;
1106 }
1107 if (nflag)
1108 /*
1109 * Simplest way to suppress names.
1110 */
1111 return;
1112
1113 init_etherarray();
1114 init_servarray();
1115 init_eprotoarray();
1116 init_protoidarray();
1117 init_ipxsaparray();
1118}
1119
1120const char *
1121dnaddr_string(u_short dnaddr)
1122{
1123 register struct hnamemem *tp;
1124
1125 for (tp = &dnaddrtable[dnaddr & (HASHNAMESIZE-1)]; tp->nxt != 0;
1126 tp = tp->nxt)
1127 if (tp->addr == dnaddr)
1128 return (tp->name);
1129
1130 tp->addr = dnaddr;
1131 tp->nxt = newhnamemem();
1132 if (nflag)
1133 tp->name = dnnum_string(dnaddr);
1134 else
1135 tp->name = dnname_string(dnaddr);
1136
1137 return(tp->name);
1138}
1139
1140/* Return a zero'ed hnamemem struct and cuts down on calloc() overhead */
1141struct hnamemem *
1142newhnamemem(void)
1143{
1144 register struct hnamemem *p;
1145 static struct hnamemem *ptr = NULL;
1146 static u_int num = 0;
1147
1148 if (num <= 0) {
1149 num = 64;
1150 ptr = (struct hnamemem *)calloc(num, sizeof (*ptr));
1151 if (ptr == NULL)
1152 error("newhnamemem: calloc");
1153 }
1154 --num;
1155 p = ptr++;
1156 return (p);
1157}
1158
1159#ifdef INET6
1160/* Return a zero'ed h6namemem struct and cuts down on calloc() overhead */
1161struct h6namemem *
1162newh6namemem(void)
1163{
1164 register struct h6namemem *p;
1165 static struct h6namemem *ptr = NULL;
1166 static u_int num = 0;
1167
1168 if (num <= 0) {
1169 num = 64;
1170 ptr = (struct h6namemem *)calloc(num, sizeof (*ptr));
1171 if (ptr == NULL)
1172 error("newh6namemem: calloc");
1173 }
1174 --num;
1175 p = ptr++;
1176 return (p);
1177}
1178#endif /* INET6 */