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More use of %zu to print sizeof values.
[tcpdump] / print-decnet.c
1 /*
2 * Copyright (c) 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
22 /* \summary: DECnet printer */
23
24 #ifdef HAVE_CONFIG_H
25 #include <config.h>
26 #endif
27
28 #include "netdissect-stdinc.h"
29
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33
34 #ifdef HAVE_DNET_HTOA
35 #ifdef HAVE_NETDNET_DN_H
36 #include <netdnet/dn.h>
37 #endif
38 #ifndef HAVE_STRUCT_DN_NADDR
39 #define DN_MAXADDL 20 /* max size of DECnet address */
40 struct dn_naddr {
41 unsigned short a_len; /* length of address */
42 unsigned char a_addr[DN_MAXADDL]; /* address as bytes */
43 };
44 #endif /* HAVE_STRUCT_DN_NADDR */
45 #ifdef HAVE_NETDNET_DNETDB_H
46 #include <netdnet/dnetdb.h>
47 #endif
48 #ifndef NETDNET_DNETDB_H_DECLARES_DNET_HTOA
49 extern char *dnet_htoa(struct dn_naddr *);
50 #endif
51 #endif
52
53 #include "netdissect.h"
54 #include "extract.h"
55 #include "addrtoname.h"
56
57
58 #ifndef _WIN32
59 typedef nd_uint8_t byte; /* single byte field */
60 #else
61 /*
62 * the keyword 'byte' generates conflicts in Windows
63 */
64 typedef nd_uint8_t Byte; /* single byte field */
65 #define byte Byte
66 #endif /* _WIN32 */
67 typedef nd_uint16_t word; /* 2 byte field */
68 typedef nd_uint32_t longword; /* 4 bytes field */
69
70 /*
71 * Definitions for DECNET Phase IV protocol headers
72 */
73 typedef union {
74 nd_byte dne_addr[6]; /* full ethernet address */
75 struct {
76 nd_byte dne_hiord[4]; /* DECnet HIORD prefix */
77 nd_byte dne_nodeaddr[2]; /* DECnet node address */
78 } dne_remote;
79 } etheraddr; /* Ethernet address */
80
81 #define HIORD 0x000400aa /* high 32-bits of address (swapped) */
82
83 #define AREAMASK 0176000 /* mask for area field */
84 #define AREASHIFT 10 /* bit-offset for area field */
85 #define NODEMASK 01777 /* mask for node address field */
86
87 /*
88 * Define long and short header formats.
89 */
90 struct shorthdr
91 {
92 byte sh_flags; /* route flags */
93 word sh_dst; /* destination node address */
94 word sh_src; /* source node address */
95 byte sh_visits; /* visit count */
96 };
97
98 struct longhdr
99 {
100 byte lg_flags; /* route flags */
101 byte lg_darea; /* destination area (reserved) */
102 byte lg_dsarea; /* destination subarea (reserved) */
103 etheraddr lg_dst; /* destination id */
104 byte lg_sarea; /* source area (reserved) */
105 byte lg_ssarea; /* source subarea (reserved) */
106 etheraddr lg_src; /* source id */
107 byte lg_nextl2; /* next level 2 router (reserved) */
108 byte lg_visits; /* visit count */
109 byte lg_service; /* service class (reserved) */
110 byte lg_pt; /* protocol type (reserved) */
111 };
112
113 union routehdr
114 {
115 struct shorthdr rh_short; /* short route header */
116 struct longhdr rh_long; /* long route header */
117 };
118
119 /*
120 * Define the values of various fields in the protocol messages.
121 *
122 * 1. Data packet formats.
123 */
124 #define RMF_MASK 7 /* mask for message type */
125 #define RMF_SHORT 2 /* short message format */
126 #define RMF_LONG 6 /* long message format */
127 #ifndef RMF_RQR
128 #define RMF_RQR 010 /* request return to sender */
129 #define RMF_RTS 020 /* returning to sender */
130 #define RMF_IE 040 /* intra-ethernet packet */
131 #endif /* RMR_RQR */
132 #define RMF_FVER 0100 /* future version flag */
133 #define RMF_PAD 0200 /* pad field */
134 #define RMF_PADMASK 0177 /* pad field mask */
135
136 #define VIS_MASK 077 /* visit field mask */
137
138 /*
139 * 2. Control packet formats.
140 */
141 #define RMF_CTLMASK 017 /* mask for message type */
142 #define RMF_CTLMSG 01 /* control message indicator */
143 #define RMF_INIT 01 /* initialization message */
144 #define RMF_VER 03 /* verification message */
145 #define RMF_TEST 05 /* hello and test message */
146 #define RMF_L1ROUT 07 /* level 1 routing message */
147 #define RMF_L2ROUT 011 /* level 2 routing message */
148 #define RMF_RHELLO 013 /* router hello message */
149 #define RMF_EHELLO 015 /* endnode hello message */
150
151 #define TI_L2ROUT 01 /* level 2 router */
152 #define TI_L1ROUT 02 /* level 1 router */
153 #define TI_ENDNODE 03 /* endnode */
154 #define TI_VERIF 04 /* verification required */
155 #define TI_BLOCK 010 /* blocking requested */
156
157 #define VE_VERS 2 /* version number (2) */
158 #define VE_ECO 0 /* ECO number */
159 #define VE_UECO 0 /* user ECO number (0) */
160
161 #define P3_VERS 1 /* phase III version number (1) */
162 #define P3_ECO 3 /* ECO number (3) */
163 #define P3_UECO 0 /* user ECO number (0) */
164
165 #define II_L2ROUT 01 /* level 2 router */
166 #define II_L1ROUT 02 /* level 1 router */
167 #define II_ENDNODE 03 /* endnode */
168 #define II_VERIF 04 /* verification required */
169 #define II_NOMCAST 040 /* no multicast traffic accepted */
170 #define II_BLOCK 0100 /* blocking requested */
171 #define II_TYPEMASK 03 /* mask for node type */
172
173 #define TESTDATA 0252 /* test data bytes */
174 #define TESTLEN 1 /* length of transmitted test data */
175
176 /*
177 * Define control message formats.
178 */
179 struct initmsgIII /* phase III initialization message */
180 {
181 byte inIII_flags; /* route flags */
182 word inIII_src; /* source node address */
183 byte inIII_info; /* routing layer information */
184 word inIII_blksize; /* maximum data link block size */
185 byte inIII_vers; /* version number */
186 byte inIII_eco; /* ECO number */
187 byte inIII_ueco; /* user ECO number */
188 byte inIII_rsvd; /* reserved image field */
189 };
190
191 struct initmsg /* initialization message */
192 {
193 byte in_flags; /* route flags */
194 word in_src; /* source node address */
195 byte in_info; /* routing layer information */
196 word in_blksize; /* maximum data link block size */
197 byte in_vers; /* version number */
198 byte in_eco; /* ECO number */
199 byte in_ueco; /* user ECO number */
200 word in_hello; /* hello timer */
201 byte in_rsvd; /* reserved image field */
202 };
203
204 struct verifmsg /* verification message */
205 {
206 byte ve_flags; /* route flags */
207 word ve_src; /* source node address */
208 byte ve_fcnval; /* function value image field */
209 };
210
211 struct testmsg /* hello and test message */
212 {
213 byte te_flags; /* route flags */
214 word te_src; /* source node address */
215 byte te_data; /* test data image field */
216 };
217
218 struct l1rout /* level 1 routing message */
219 {
220 byte r1_flags; /* route flags */
221 word r1_src; /* source node address */
222 byte r1_rsvd; /* reserved field */
223 };
224
225 struct l2rout /* level 2 routing message */
226 {
227 byte r2_flags; /* route flags */
228 word r2_src; /* source node address */
229 byte r2_rsvd; /* reserved field */
230 };
231
232 struct rhellomsg /* router hello message */
233 {
234 byte rh_flags; /* route flags */
235 byte rh_vers; /* version number */
236 byte rh_eco; /* ECO number */
237 byte rh_ueco; /* user ECO number */
238 etheraddr rh_src; /* source id */
239 byte rh_info; /* routing layer information */
240 word rh_blksize; /* maximum data link block size */
241 byte rh_priority; /* router's priority */
242 byte rh_area; /* reserved */
243 word rh_hello; /* hello timer */
244 byte rh_mpd; /* reserved */
245 };
246
247 struct ehellomsg /* endnode hello message */
248 {
249 byte eh_flags; /* route flags */
250 byte eh_vers; /* version number */
251 byte eh_eco; /* ECO number */
252 byte eh_ueco; /* user ECO number */
253 etheraddr eh_src; /* source id */
254 byte eh_info; /* routing layer information */
255 word eh_blksize; /* maximum data link block size */
256 byte eh_area; /* area (reserved) */
257 byte eh_seed[8]; /* verification seed */
258 etheraddr eh_router; /* designated router */
259 word eh_hello; /* hello timer */
260 byte eh_mpd; /* (reserved) */
261 byte eh_data; /* test data image field */
262 };
263
264 union controlmsg
265 {
266 struct initmsg cm_init; /* initialization message */
267 struct verifmsg cm_ver; /* verification message */
268 struct testmsg cm_test; /* hello and test message */
269 struct l1rout cm_l1rou; /* level 1 routing message */
270 struct l2rout cm_l2rout; /* level 2 routing message */
271 struct rhellomsg cm_rhello; /* router hello message */
272 struct ehellomsg cm_ehello; /* endnode hello message */
273 };
274
275 /* Macros for decoding routing-info fields */
276 #define RI_COST(x) ((x)&0777)
277 #define RI_HOPS(x) (((x)>>10)&037)
278
279 /*
280 * NSP protocol fields and values.
281 */
282
283 #define NSP_TYPEMASK 014 /* mask to isolate type code */
284 #define NSP_SUBMASK 0160 /* mask to isolate subtype code */
285 #define NSP_SUBSHFT 4 /* shift to move subtype code */
286
287 #define MFT_DATA 0 /* data message */
288 #define MFT_ACK 04 /* acknowledgement message */
289 #define MFT_CTL 010 /* control message */
290
291 #define MFS_ILS 020 /* data or I/LS indicator */
292 #define MFS_BOM 040 /* beginning of message (data) */
293 #define MFS_MOM 0 /* middle of message (data) */
294 #define MFS_EOM 0100 /* end of message (data) */
295 #define MFS_INT 040 /* interrupt message */
296
297 #define MFS_DACK 0 /* data acknowledgement */
298 #define MFS_IACK 020 /* I/LS acknowledgement */
299 #define MFS_CACK 040 /* connect acknowledgement */
300
301 #define MFS_NOP 0 /* no operation */
302 #define MFS_CI 020 /* connect initiate */
303 #define MFS_CC 040 /* connect confirm */
304 #define MFS_DI 060 /* disconnect initiate */
305 #define MFS_DC 0100 /* disconnect confirm */
306 #define MFS_RCI 0140 /* retransmitted connect initiate */
307
308 #define SGQ_ACK 0100000 /* ack */
309 #define SGQ_NAK 0110000 /* negative ack */
310 #define SGQ_OACK 0120000 /* other channel ack */
311 #define SGQ_ONAK 0130000 /* other channel negative ack */
312 #define SGQ_MASK 07777 /* mask to isolate seq # */
313 #define SGQ_OTHER 020000 /* other channel qualifier */
314 #define SGQ_DELAY 010000 /* ack delay flag */
315
316 #define SGQ_EOM 0100000 /* pseudo flag for end-of-message */
317
318 #define LSM_MASK 03 /* mask for modifier field */
319 #define LSM_NOCHANGE 0 /* no change */
320 #define LSM_DONOTSEND 1 /* do not send data */
321 #define LSM_SEND 2 /* send data */
322
323 #define LSI_MASK 014 /* mask for interpretation field */
324 #define LSI_DATA 0 /* data segment or message count */
325 #define LSI_INTR 4 /* interrupt request count */
326 #define LSI_INTM 0377 /* funny marker for int. message */
327
328 #define COS_MASK 014 /* mask for flow control field */
329 #define COS_NONE 0 /* no flow control */
330 #define COS_SEGMENT 04 /* segment flow control */
331 #define COS_MESSAGE 010 /* message flow control */
332 #define COS_DEFAULT 1 /* default value for field */
333
334 #define COI_MASK 3 /* mask for version field */
335 #define COI_32 0 /* version 3.2 */
336 #define COI_31 1 /* version 3.1 */
337 #define COI_40 2 /* version 4.0 */
338 #define COI_41 3 /* version 4.1 */
339
340 #define MNU_MASK 140 /* mask for session control version */
341 #define MNU_10 000 /* session V1.0 */
342 #define MNU_20 040 /* session V2.0 */
343 #define MNU_ACCESS 1 /* access control present */
344 #define MNU_USRDATA 2 /* user data field present */
345 #define MNU_INVKPROXY 4 /* invoke proxy field present */
346 #define MNU_UICPROXY 8 /* use uic-based proxy */
347
348 #define DC_NORESOURCES 1 /* no resource reason code */
349 #define DC_NOLINK 41 /* no link terminate reason code */
350 #define DC_COMPLETE 42 /* disconnect complete reason code */
351
352 #define DI_NOERROR 0 /* user disconnect */
353 #define DI_SHUT 3 /* node is shutting down */
354 #define DI_NOUSER 4 /* destination end user does not exist */
355 #define DI_INVDEST 5 /* invalid end user destination */
356 #define DI_REMRESRC 6 /* insufficient remote resources */
357 #define DI_TPA 8 /* third party abort */
358 #define DI_PROTOCOL 7 /* protocol error discovered */
359 #define DI_ABORT 9 /* user abort */
360 #define DI_LOCALRESRC 32 /* insufficient local resources */
361 #define DI_REMUSERRESRC 33 /* insufficient remote user resources */
362 #define DI_BADACCESS 34 /* bad access control information */
363 #define DI_BADACCNT 36 /* bad ACCOUNT information */
364 #define DI_CONNECTABORT 38 /* connect request cancelled */
365 #define DI_TIMEDOUT 38 /* remote node or user crashed */
366 #define DI_UNREACHABLE 39 /* local timers expired due to ... */
367 #define DI_BADIMAGE 43 /* bad image data in connect */
368 #define DI_SERVMISMATCH 54 /* cryptographic service mismatch */
369
370 #define UC_OBJREJECT 0 /* object rejected connect */
371 #define UC_USERDISCONNECT 0 /* user disconnect */
372 #define UC_RESOURCES 1 /* insufficient resources (local or remote) */
373 #define UC_NOSUCHNODE 2 /* unrecognized node name */
374 #define UC_REMOTESHUT 3 /* remote node shutting down */
375 #define UC_NOSUCHOBJ 4 /* unrecognized object */
376 #define UC_INVOBJFORMAT 5 /* invalid object name format */
377 #define UC_OBJTOOBUSY 6 /* object too busy */
378 #define UC_NETWORKABORT 8 /* network abort */
379 #define UC_USERABORT 9 /* user abort */
380 #define UC_INVNODEFORMAT 10 /* invalid node name format */
381 #define UC_LOCALSHUT 11 /* local node shutting down */
382 #define UC_ACCESSREJECT 34 /* invalid access control information */
383 #define UC_NORESPONSE 38 /* no response from object */
384 #define UC_UNREACHABLE 39 /* node unreachable */
385
386 /*
387 * NSP message formats.
388 */
389 struct nsphdr /* general nsp header */
390 {
391 byte nh_flags; /* message flags */
392 word nh_dst; /* destination link address */
393 word nh_src; /* source link address */
394 };
395
396 struct seghdr /* data segment header */
397 {
398 byte sh_flags; /* message flags */
399 word sh_dst; /* destination link address */
400 word sh_src; /* source link address */
401 word sh_seq[3]; /* sequence numbers */
402 };
403
404 struct minseghdr /* minimum data segment header */
405 {
406 byte ms_flags; /* message flags */
407 word ms_dst; /* destination link address */
408 word ms_src; /* source link address */
409 word ms_seq; /* sequence number */
410 };
411
412 struct lsmsg /* link service message (after hdr) */
413 {
414 byte ls_lsflags; /* link service flags */
415 byte ls_fcval; /* flow control value */
416 };
417
418 struct ackmsg /* acknowledgement message */
419 {
420 byte ak_flags; /* message flags */
421 word ak_dst; /* destination link address */
422 word ak_src; /* source link address */
423 word ak_acknum[2]; /* acknowledgement numbers */
424 };
425
426 struct minackmsg /* minimum acknowledgement message */
427 {
428 byte mk_flags; /* message flags */
429 word mk_dst; /* destination link address */
430 word mk_src; /* source link address */
431 word mk_acknum; /* acknowledgement number */
432 };
433
434 struct ciackmsg /* connect acknowledgement message */
435 {
436 byte ck_flags; /* message flags */
437 word ck_dst; /* destination link address */
438 };
439
440 struct cimsg /* connect initiate message */
441 {
442 byte ci_flags; /* message flags */
443 word ci_dst; /* destination link address (0) */
444 word ci_src; /* source link address */
445 byte ci_services; /* requested services */
446 byte ci_info; /* information */
447 word ci_segsize; /* maximum segment size */
448 };
449
450 struct ccmsg /* connect confirm message */
451 {
452 byte cc_flags; /* message flags */
453 word cc_dst; /* destination link address */
454 word cc_src; /* source link address */
455 byte cc_services; /* requested services */
456 byte cc_info; /* information */
457 word cc_segsize; /* maximum segment size */
458 byte cc_optlen; /* optional data length */
459 };
460
461 struct cnmsg /* generic connect message */
462 {
463 byte cn_flags; /* message flags */
464 word cn_dst; /* destination link address */
465 word cn_src; /* source link address */
466 byte cn_services; /* requested services */
467 byte cn_info; /* information */
468 word cn_segsize; /* maximum segment size */
469 };
470
471 struct dimsg /* disconnect initiate message */
472 {
473 byte di_flags; /* message flags */
474 word di_dst; /* destination link address */
475 word di_src; /* source link address */
476 word di_reason; /* reason code */
477 byte di_optlen; /* optional data length */
478 };
479
480 struct dcmsg /* disconnect confirm message */
481 {
482 byte dc_flags; /* message flags */
483 word dc_dst; /* destination link address */
484 word dc_src; /* source link address */
485 word dc_reason; /* reason code */
486 };
487
488 /* Forwards */
489 static int print_decnet_ctlmsg(netdissect_options *, const union routehdr *, u_int, u_int);
490 static void print_t_info(netdissect_options *, u_int);
491 static int print_l1_routes(netdissect_options *, const u_char *, u_int);
492 static int print_l2_routes(netdissect_options *, const u_char *, u_int);
493 static void print_i_info(netdissect_options *, u_int);
494 static int print_elist(const u_char *, u_int);
495 static int print_nsp(netdissect_options *, const u_char *, u_int);
496 static void print_reason(netdissect_options *, u_int);
497
498 void
499 decnet_print(netdissect_options *ndo,
500 const u_char *ap, u_int length,
501 u_int caplen)
502 {
503 const union routehdr *rhp;
504 u_int mflags;
505 uint16_t dst, src;
506 u_int hops;
507 u_int nsplen, pktlen;
508 const u_char *nspp;
509
510 ndo->ndo_protocol = "decnet";
511 if (length < sizeof(struct shorthdr)) {
512 nd_print_trunc(ndo);
513 return;
514 }
515
516 ND_TCHECK_LEN(ap, sizeof(short));
517 pktlen = GET_LE_U_2(ap);
518 if (pktlen < sizeof(struct shorthdr)) {
519 nd_print_trunc(ndo);
520 return;
521 }
522 if (pktlen > length) {
523 nd_print_trunc(ndo);
524 return;
525 }
526 length = pktlen;
527
528 rhp = (const union routehdr *)(ap + sizeof(short));
529 ND_TCHECK_1(rhp->rh_short.sh_flags);
530 mflags = GET_U_1(rhp->rh_short.sh_flags);
531
532 if (mflags & RMF_PAD) {
533 /* pad bytes of some sort in front of message */
534 u_int padlen = mflags & RMF_PADMASK;
535 if (ndo->ndo_vflag)
536 ND_PRINT("[pad:%u] ", padlen);
537 if (length < padlen + 2) {
538 nd_print_trunc(ndo);
539 return;
540 }
541 ND_TCHECK_LEN(ap + sizeof(short), padlen);
542 ap += padlen;
543 length -= padlen;
544 caplen -= padlen;
545 rhp = (const union routehdr *)(ap + sizeof(short));
546 ND_TCHECK_1(rhp->rh_short.sh_flags);
547 mflags = GET_U_1(rhp->rh_short.sh_flags);
548 }
549
550 if (mflags & RMF_FVER) {
551 ND_PRINT("future-version-decnet");
552 ND_DEFAULTPRINT(ap, min(length, caplen));
553 return;
554 }
555
556 /* is it a control message? */
557 if (mflags & RMF_CTLMSG) {
558 if (!print_decnet_ctlmsg(ndo, rhp, length, caplen))
559 goto trunc;
560 return;
561 }
562
563 switch (mflags & RMF_MASK) {
564 case RMF_LONG:
565 if (length < sizeof(struct longhdr)) {
566 nd_print_trunc(ndo);
567 return;
568 }
569 ND_TCHECK_SIZE(&rhp->rh_long);
570 dst =
571 GET_LE_U_2(rhp->rh_long.lg_dst.dne_remote.dne_nodeaddr);
572 src =
573 GET_LE_U_2(rhp->rh_long.lg_src.dne_remote.dne_nodeaddr);
574 hops = GET_U_1(rhp->rh_long.lg_visits);
575 nspp = ap + sizeof(short) + sizeof(struct longhdr);
576 nsplen = length - sizeof(struct longhdr);
577 break;
578 case RMF_SHORT:
579 ND_TCHECK_SIZE(&rhp->rh_short);
580 dst = GET_LE_U_2(rhp->rh_short.sh_dst);
581 src = GET_LE_U_2(rhp->rh_short.sh_src);
582 hops = (GET_U_1(rhp->rh_short.sh_visits) & VIS_MASK)+1;
583 nspp = ap + sizeof(short) + sizeof(struct shorthdr);
584 nsplen = length - sizeof(struct shorthdr);
585 break;
586 default:
587 ND_PRINT("unknown message flags under mask");
588 ND_DEFAULTPRINT((const u_char *)ap, min(length, caplen));
589 return;
590 }
591
592 ND_PRINT("%s > %s %u ",
593 dnaddr_string(ndo, src), dnaddr_string(ndo, dst), pktlen);
594 if (ndo->ndo_vflag) {
595 if (mflags & RMF_RQR)
596 ND_PRINT("RQR ");
597 if (mflags & RMF_RTS)
598 ND_PRINT("RTS ");
599 if (mflags & RMF_IE)
600 ND_PRINT("IE ");
601 ND_PRINT("%u hops ", hops);
602 }
603
604 if (!print_nsp(ndo, nspp, nsplen))
605 goto trunc;
606 return;
607
608 trunc:
609 nd_print_trunc(ndo);
610 return;
611 }
612
613 static int
614 print_decnet_ctlmsg(netdissect_options *ndo,
615 const union routehdr *rhp, u_int length,
616 u_int caplen)
617 {
618 /* Our caller has already checked for mflags */
619 u_int mflags = GET_U_1(rhp->rh_short.sh_flags);
620 const union controlmsg *cmp = (const union controlmsg *)rhp;
621 uint16_t src, dst;
622 u_int info, blksize, eco, ueco, hello, other, vers;
623 u_int priority;
624 const u_char *rhpx = (const u_char *)rhp;
625 int ret;
626
627 switch (mflags & RMF_CTLMASK) {
628 case RMF_INIT:
629 ND_PRINT("init ");
630 if (length < sizeof(struct initmsg))
631 goto trunc;
632 ND_TCHECK_SIZE(&cmp->cm_init);
633 src = GET_LE_U_2(cmp->cm_init.in_src);
634 info = GET_U_1(cmp->cm_init.in_info);
635 blksize = GET_LE_U_2(cmp->cm_init.in_blksize);
636 vers = GET_U_1(cmp->cm_init.in_vers);
637 eco = GET_U_1(cmp->cm_init.in_eco);
638 ueco = GET_U_1(cmp->cm_init.in_ueco);
639 hello = GET_LE_U_2(cmp->cm_init.in_hello);
640 print_t_info(ndo, info);
641 ND_PRINT("src %sblksize %u vers %u eco %u ueco %u hello %u",
642 dnaddr_string(ndo, src), blksize, vers, eco, ueco,
643 hello);
644 ret = 1;
645 break;
646 case RMF_VER:
647 ND_PRINT("verification ");
648 if (length < sizeof(struct verifmsg))
649 goto trunc;
650 ND_TCHECK_SIZE(&cmp->cm_ver);
651 src = GET_LE_U_2(cmp->cm_ver.ve_src);
652 other = GET_U_1(cmp->cm_ver.ve_fcnval);
653 ND_PRINT("src %s fcnval %o", dnaddr_string(ndo, src), other);
654 ret = 1;
655 break;
656 case RMF_TEST:
657 ND_PRINT("test ");
658 if (length < sizeof(struct testmsg))
659 goto trunc;
660 ND_TCHECK_SIZE(&cmp->cm_test);
661 src = GET_LE_U_2(cmp->cm_test.te_src);
662 other = GET_U_1(cmp->cm_test.te_data);
663 ND_PRINT("src %s data %o", dnaddr_string(ndo, src), other);
664 ret = 1;
665 break;
666 case RMF_L1ROUT:
667 ND_PRINT("lev-1-routing ");
668 if (length < sizeof(struct l1rout))
669 goto trunc;
670 ND_TCHECK_SIZE(&cmp->cm_l1rou);
671 src = GET_LE_U_2(cmp->cm_l1rou.r1_src);
672 ND_PRINT("src %s ", dnaddr_string(ndo, src));
673 ret = print_l1_routes(ndo, &(rhpx[sizeof(struct l1rout)]),
674 length - sizeof(struct l1rout));
675 break;
676 case RMF_L2ROUT:
677 ND_PRINT("lev-2-routing ");
678 if (length < sizeof(struct l2rout))
679 goto trunc;
680 ND_TCHECK_SIZE(&cmp->cm_l2rout);
681 src = GET_LE_U_2(cmp->cm_l2rout.r2_src);
682 ND_PRINT("src %s ", dnaddr_string(ndo, src));
683 ret = print_l2_routes(ndo, &(rhpx[sizeof(struct l2rout)]),
684 length - sizeof(struct l2rout));
685 break;
686 case RMF_RHELLO:
687 ND_PRINT("router-hello ");
688 if (length < sizeof(struct rhellomsg))
689 goto trunc;
690 ND_TCHECK_SIZE(&cmp->cm_rhello);
691 vers = GET_U_1(cmp->cm_rhello.rh_vers);
692 eco = GET_U_1(cmp->cm_rhello.rh_eco);
693 ueco = GET_U_1(cmp->cm_rhello.rh_ueco);
694 src =
695 GET_LE_U_2(cmp->cm_rhello.rh_src.dne_remote.dne_nodeaddr);
696 info = GET_U_1(cmp->cm_rhello.rh_info);
697 blksize = GET_LE_U_2(cmp->cm_rhello.rh_blksize);
698 priority = GET_U_1(cmp->cm_rhello.rh_priority);
699 hello = GET_LE_U_2(cmp->cm_rhello.rh_hello);
700 print_i_info(ndo, info);
701 ND_PRINT("vers %u eco %u ueco %u src %s blksize %u pri %u hello %u",
702 vers, eco, ueco, dnaddr_string(ndo, src),
703 blksize, priority, hello);
704 ret = print_elist(&(rhpx[sizeof(struct rhellomsg)]),
705 length - sizeof(struct rhellomsg));
706 break;
707 case RMF_EHELLO:
708 ND_PRINT("endnode-hello ");
709 if (length < sizeof(struct ehellomsg))
710 goto trunc;
711 ND_TCHECK_SIZE(&cmp->cm_ehello);
712 vers = GET_U_1(cmp->cm_ehello.eh_vers);
713 eco = GET_U_1(cmp->cm_ehello.eh_eco);
714 ueco = GET_U_1(cmp->cm_ehello.eh_ueco);
715 src =
716 GET_LE_U_2(cmp->cm_ehello.eh_src.dne_remote.dne_nodeaddr);
717 info = GET_U_1(cmp->cm_ehello.eh_info);
718 blksize = GET_LE_U_2(cmp->cm_ehello.eh_blksize);
719 /*seed*/
720 dst =
721 GET_LE_U_2(cmp->cm_ehello.eh_router.dne_remote.dne_nodeaddr);
722 hello = GET_LE_U_2(cmp->cm_ehello.eh_hello);
723 other = GET_U_1(cmp->cm_ehello.eh_data);
724 print_i_info(ndo, info);
725 ND_PRINT("vers %u eco %u ueco %u src %s blksize %u rtr %s hello %u data %o",
726 vers, eco, ueco, dnaddr_string(ndo, src),
727 blksize, dnaddr_string(ndo, dst), hello, other);
728 ret = 1;
729 break;
730
731 default:
732 ND_PRINT("unknown control message");
733 ND_DEFAULTPRINT((const u_char *)rhp, min(length, caplen));
734 ret = 1;
735 break;
736 }
737 return (ret);
738
739 trunc:
740 return (0);
741 }
742
743 static void
744 print_t_info(netdissect_options *ndo,
745 u_int info)
746 {
747 u_int ntype = info & 3;
748 switch (ntype) {
749 case 0: ND_PRINT("reserved-ntype? "); break;
750 case TI_L2ROUT: ND_PRINT("l2rout "); break;
751 case TI_L1ROUT: ND_PRINT("l1rout "); break;
752 case TI_ENDNODE: ND_PRINT("endnode "); break;
753 }
754 if (info & TI_VERIF)
755 ND_PRINT("verif ");
756 if (info & TI_BLOCK)
757 ND_PRINT("blo ");
758 }
759
760 static int
761 print_l1_routes(netdissect_options *ndo,
762 const u_char *rp, u_int len)
763 {
764 u_int count;
765 u_int id;
766 u_int info;
767
768 /* The last short is a checksum */
769 while (len > (3 * sizeof(short))) {
770 ND_TCHECK_LEN(rp, 3 * sizeof(short));
771 count = GET_LE_U_2(rp);
772 if (count > 1024)
773 return (1); /* seems to be bogus from here on */
774 rp += sizeof(short);
775 len -= sizeof(short);
776 id = GET_LE_U_2(rp);
777 rp += sizeof(short);
778 len -= sizeof(short);
779 info = GET_LE_U_2(rp);
780 rp += sizeof(short);
781 len -= sizeof(short);
782 ND_PRINT("{ids %u-%u cost %u hops %u} ", id, id + count,
783 RI_COST(info), RI_HOPS(info));
784 }
785 return (1);
786
787 trunc:
788 return (0);
789 }
790
791 static int
792 print_l2_routes(netdissect_options *ndo,
793 const u_char *rp, u_int len)
794 {
795 u_int count;
796 u_int area;
797 u_int info;
798
799 /* The last short is a checksum */
800 while (len > (3 * sizeof(short))) {
801 ND_TCHECK_LEN(rp, 3 * sizeof(short));
802 count = GET_LE_U_2(rp);
803 if (count > 1024)
804 return (1); /* seems to be bogus from here on */
805 rp += sizeof(short);
806 len -= sizeof(short);
807 area = GET_LE_U_2(rp);
808 rp += sizeof(short);
809 len -= sizeof(short);
810 info = GET_LE_U_2(rp);
811 rp += sizeof(short);
812 len -= sizeof(short);
813 ND_PRINT("{areas %u-%u cost %u hops %u} ", area, area + count,
814 RI_COST(info), RI_HOPS(info));
815 }
816 return (1);
817
818 trunc:
819 return (0);
820 }
821
822 static void
823 print_i_info(netdissect_options *ndo,
824 u_int info)
825 {
826 u_int ntype = info & II_TYPEMASK;
827 switch (ntype) {
828 case 0: ND_PRINT("reserved-ntype? "); break;
829 case II_L2ROUT: ND_PRINT("l2rout "); break;
830 case II_L1ROUT: ND_PRINT("l1rout "); break;
831 case II_ENDNODE: ND_PRINT("endnode "); break;
832 }
833 if (info & II_VERIF)
834 ND_PRINT("verif ");
835 if (info & II_NOMCAST)
836 ND_PRINT("nomcast ");
837 if (info & II_BLOCK)
838 ND_PRINT("blo ");
839 }
840
841 static int
842 print_elist(const u_char *elp _U_, u_int len _U_)
843 {
844 /* Not enough examples available for me to debug this */
845 return (1);
846 }
847
848 static int
849 print_nsp(netdissect_options *ndo,
850 const u_char *nspp, u_int nsplen)
851 {
852 const struct nsphdr *nsphp = (const struct nsphdr *)nspp;
853 u_int dst, src, flags;
854
855 if (nsplen < sizeof(struct nsphdr))
856 goto trunc;
857 ND_TCHECK_SIZE(nsphp);
858 flags = GET_U_1(nsphp->nh_flags);
859 dst = GET_LE_U_2(nsphp->nh_dst);
860 src = GET_LE_U_2(nsphp->nh_src);
861
862 switch (flags & NSP_TYPEMASK) {
863 case MFT_DATA:
864 switch (flags & NSP_SUBMASK) {
865 case MFS_BOM:
866 case MFS_MOM:
867 case MFS_EOM:
868 case MFS_BOM+MFS_EOM:
869 ND_PRINT("data %u>%u ", src, dst);
870 {
871 const struct seghdr *shp = (const struct seghdr *)nspp;
872 u_int ack;
873 u_int data_off = sizeof(struct minseghdr);
874
875 if (nsplen < data_off)
876 goto trunc;
877 ND_TCHECK_2(shp->sh_seq[0]);
878 ack = GET_LE_U_2(shp->sh_seq[0]);
879 if (ack & SGQ_ACK) { /* acknum field */
880 if ((ack & SGQ_NAK) == SGQ_NAK)
881 ND_PRINT("nak %u ", ack & SGQ_MASK);
882 else
883 ND_PRINT("ack %u ", ack & SGQ_MASK);
884 data_off += sizeof(short);
885 if (nsplen < data_off)
886 goto trunc;
887 ND_TCHECK_2(shp->sh_seq[1]);
888 ack = GET_LE_U_2(shp->sh_seq[1]);
889 if (ack & SGQ_OACK) { /* ackoth field */
890 if ((ack & SGQ_ONAK) == SGQ_ONAK)
891 ND_PRINT("onak %u ", ack & SGQ_MASK);
892 else
893 ND_PRINT("oack %u ", ack & SGQ_MASK);
894 data_off += sizeof(short);
895 if (nsplen < data_off)
896 goto trunc;
897 ND_TCHECK_2(shp->sh_seq[2]);
898 ack = GET_LE_U_2(shp->sh_seq[2]);
899 }
900 }
901 ND_PRINT("seg %u ", ack & SGQ_MASK);
902 }
903 break;
904 case MFS_ILS+MFS_INT:
905 ND_PRINT("intr ");
906 {
907 const struct seghdr *shp = (const struct seghdr *)nspp;
908 u_int ack;
909 u_int data_off = sizeof(struct minseghdr);
910
911 if (nsplen < data_off)
912 goto trunc;
913 ND_TCHECK_2(shp->sh_seq[0]);
914 ack = GET_LE_U_2(shp->sh_seq[0]);
915 if (ack & SGQ_ACK) { /* acknum field */
916 if ((ack & SGQ_NAK) == SGQ_NAK)
917 ND_PRINT("nak %u ", ack & SGQ_MASK);
918 else
919 ND_PRINT("ack %u ", ack & SGQ_MASK);
920 data_off += sizeof(short);
921 if (nsplen < data_off)
922 goto trunc;
923 ND_TCHECK_2(shp->sh_seq[1]);
924 ack = GET_LE_U_2(shp->sh_seq[1]);
925 if (ack & SGQ_OACK) { /* ackdat field */
926 if ((ack & SGQ_ONAK) == SGQ_ONAK)
927 ND_PRINT("nakdat %u ", ack & SGQ_MASK);
928 else
929 ND_PRINT("ackdat %u ", ack & SGQ_MASK);
930 data_off += sizeof(short);
931 if (nsplen < data_off)
932 goto trunc;
933 ND_TCHECK_2(shp->sh_seq[2]);
934 ack = GET_LE_U_2(shp->sh_seq[2]);
935 }
936 }
937 ND_PRINT("seg %u ", ack & SGQ_MASK);
938 }
939 break;
940 case MFS_ILS:
941 ND_PRINT("link-service %u>%u ", src, dst);
942 {
943 const struct seghdr *shp = (const struct seghdr *)nspp;
944 const struct lsmsg *lsmp =
945 (const struct lsmsg *)(nspp + sizeof(struct seghdr));
946 u_int ack;
947 u_int lsflags, fcval;
948
949 if (nsplen < sizeof(struct seghdr) + sizeof(struct lsmsg))
950 goto trunc;
951 ND_TCHECK_2(shp->sh_seq[0]);
952 ack = GET_LE_U_2(shp->sh_seq[0]);
953 if (ack & SGQ_ACK) { /* acknum field */
954 if ((ack & SGQ_NAK) == SGQ_NAK)
955 ND_PRINT("nak %u ", ack & SGQ_MASK);
956 else
957 ND_PRINT("ack %u ", ack & SGQ_MASK);
958 ND_TCHECK_2(shp->sh_seq[1]);
959 ack = GET_LE_U_2(shp->sh_seq[1]);
960 if (ack & SGQ_OACK) { /* ackdat field */
961 if ((ack & SGQ_ONAK) == SGQ_ONAK)
962 ND_PRINT("nakdat %u ", ack & SGQ_MASK);
963 else
964 ND_PRINT("ackdat %u ", ack & SGQ_MASK);
965 ND_TCHECK_2(shp->sh_seq[2]);
966 ack = GET_LE_U_2(shp->sh_seq[2]);
967 }
968 }
969 ND_PRINT("seg %u ", ack & SGQ_MASK);
970 ND_TCHECK_SIZE(lsmp);
971 lsflags = GET_U_1(lsmp->ls_lsflags);
972 fcval = GET_U_1(lsmp->ls_fcval);
973 switch (lsflags & LSI_MASK) {
974 case LSI_DATA:
975 ND_PRINT("dat seg count %u ", fcval);
976 switch (lsflags & LSM_MASK) {
977 case LSM_NOCHANGE:
978 break;
979 case LSM_DONOTSEND:
980 ND_PRINT("donotsend-data ");
981 break;
982 case LSM_SEND:
983 ND_PRINT("send-data ");
984 break;
985 default:
986 ND_PRINT("reserved-fcmod? %x", lsflags);
987 break;
988 }
989 break;
990 case LSI_INTR:
991 ND_PRINT("intr req count %u ", fcval);
992 break;
993 default:
994 ND_PRINT("reserved-fcval-int? %x", lsflags);
995 break;
996 }
997 }
998 break;
999 default:
1000 ND_PRINT("reserved-subtype? %x %u > %u", flags, src, dst);
1001 break;
1002 }
1003 break;
1004 case MFT_ACK:
1005 switch (flags & NSP_SUBMASK) {
1006 case MFS_DACK:
1007 ND_PRINT("data-ack %u>%u ", src, dst);
1008 {
1009 const struct ackmsg *amp = (const struct ackmsg *)nspp;
1010 u_int ack;
1011
1012 if (nsplen < sizeof(struct ackmsg))
1013 goto trunc;
1014 ND_TCHECK_SIZE(amp);
1015 ack = GET_LE_U_2(amp->ak_acknum[0]);
1016 if (ack & SGQ_ACK) { /* acknum field */
1017 if ((ack & SGQ_NAK) == SGQ_NAK)
1018 ND_PRINT("nak %u ", ack & SGQ_MASK);
1019 else
1020 ND_PRINT("ack %u ", ack & SGQ_MASK);
1021 ack = GET_LE_U_2(amp->ak_acknum[1]);
1022 if (ack & SGQ_OACK) { /* ackoth field */
1023 if ((ack & SGQ_ONAK) == SGQ_ONAK)
1024 ND_PRINT("onak %u ", ack & SGQ_MASK);
1025 else
1026 ND_PRINT("oack %u ", ack & SGQ_MASK);
1027 }
1028 }
1029 }
1030 break;
1031 case MFS_IACK:
1032 ND_PRINT("ils-ack %u>%u ", src, dst);
1033 {
1034 const struct ackmsg *amp = (const struct ackmsg *)nspp;
1035 u_int ack;
1036
1037 if (nsplen < sizeof(struct ackmsg))
1038 goto trunc;
1039 ND_TCHECK_SIZE(amp);
1040 ack = GET_LE_U_2(amp->ak_acknum[0]);
1041 if (ack & SGQ_ACK) { /* acknum field */
1042 if ((ack & SGQ_NAK) == SGQ_NAK)
1043 ND_PRINT("nak %u ", ack & SGQ_MASK);
1044 else
1045 ND_PRINT("ack %u ", ack & SGQ_MASK);
1046 ND_TCHECK_2(amp->ak_acknum[1]);
1047 ack = GET_LE_U_2(amp->ak_acknum[1]);
1048 if (ack & SGQ_OACK) { /* ackdat field */
1049 if ((ack & SGQ_ONAK) == SGQ_ONAK)
1050 ND_PRINT("nakdat %u ", ack & SGQ_MASK);
1051 else
1052 ND_PRINT("ackdat %u ", ack & SGQ_MASK);
1053 }
1054 }
1055 }
1056 break;
1057 case MFS_CACK:
1058 ND_PRINT("conn-ack %u", dst);
1059 break;
1060 default:
1061 ND_PRINT("reserved-acktype? %x %u > %u", flags, src, dst);
1062 break;
1063 }
1064 break;
1065 case MFT_CTL:
1066 switch (flags & NSP_SUBMASK) {
1067 case MFS_CI:
1068 case MFS_RCI:
1069 if ((flags & NSP_SUBMASK) == MFS_CI)
1070 ND_PRINT("conn-initiate ");
1071 else
1072 ND_PRINT("retrans-conn-initiate ");
1073 ND_PRINT("%u>%u ", src, dst);
1074 {
1075 const struct cimsg *cimp = (const struct cimsg *)nspp;
1076 u_int services, info, segsize;
1077
1078 if (nsplen < sizeof(struct cimsg))
1079 goto trunc;
1080 ND_TCHECK_SIZE(cimp);
1081 services = GET_U_1(cimp->ci_services);
1082 info = GET_U_1(cimp->ci_info);
1083 segsize = GET_LE_U_2(cimp->ci_segsize);
1084
1085 switch (services & COS_MASK) {
1086 case COS_NONE:
1087 break;
1088 case COS_SEGMENT:
1089 ND_PRINT("seg ");
1090 break;
1091 case COS_MESSAGE:
1092 ND_PRINT("msg ");
1093 break;
1094 }
1095 switch (info & COI_MASK) {
1096 case COI_32:
1097 ND_PRINT("ver 3.2 ");
1098 break;
1099 case COI_31:
1100 ND_PRINT("ver 3.1 ");
1101 break;
1102 case COI_40:
1103 ND_PRINT("ver 4.0 ");
1104 break;
1105 case COI_41:
1106 ND_PRINT("ver 4.1 ");
1107 break;
1108 }
1109 ND_PRINT("segsize %u ", segsize);
1110 }
1111 break;
1112 case MFS_CC:
1113 ND_PRINT("conn-confirm %u>%u ", src, dst);
1114 {
1115 const struct ccmsg *ccmp = (const struct ccmsg *)nspp;
1116 u_int services, info;
1117 u_int segsize, optlen;
1118
1119 if (nsplen < sizeof(struct ccmsg))
1120 goto trunc;
1121 ND_TCHECK_SIZE(ccmp);
1122 services = GET_U_1(ccmp->cc_services);
1123 info = GET_U_1(ccmp->cc_info);
1124 segsize = GET_LE_U_2(ccmp->cc_segsize);
1125 optlen = GET_U_1(ccmp->cc_optlen);
1126
1127 switch (services & COS_MASK) {
1128 case COS_NONE:
1129 break;
1130 case COS_SEGMENT:
1131 ND_PRINT("seg ");
1132 break;
1133 case COS_MESSAGE:
1134 ND_PRINT("msg ");
1135 break;
1136 }
1137 switch (info & COI_MASK) {
1138 case COI_32:
1139 ND_PRINT("ver 3.2 ");
1140 break;
1141 case COI_31:
1142 ND_PRINT("ver 3.1 ");
1143 break;
1144 case COI_40:
1145 ND_PRINT("ver 4.0 ");
1146 break;
1147 case COI_41:
1148 ND_PRINT("ver 4.1 ");
1149 break;
1150 }
1151 ND_PRINT("segsize %u ", segsize);
1152 if (optlen) {
1153 ND_PRINT("optlen %u ", optlen);
1154 }
1155 }
1156 break;
1157 case MFS_DI:
1158 ND_PRINT("disconn-initiate %u>%u ", src, dst);
1159 {
1160 const struct dimsg *dimp = (const struct dimsg *)nspp;
1161 u_int reason;
1162 u_int optlen;
1163
1164 if (nsplen < sizeof(struct dimsg))
1165 goto trunc;
1166 ND_TCHECK_SIZE(dimp);
1167 reason = GET_LE_U_2(dimp->di_reason);
1168 optlen = GET_U_1(dimp->di_optlen);
1169
1170 print_reason(ndo, reason);
1171 if (optlen) {
1172 ND_PRINT("optlen %u ", optlen);
1173 }
1174 }
1175 break;
1176 case MFS_DC:
1177 ND_PRINT("disconn-confirm %u>%u ", src, dst);
1178 {
1179 const struct dcmsg *dcmp = (const struct dcmsg *)nspp;
1180 u_int reason;
1181
1182 ND_TCHECK_SIZE(dcmp);
1183 reason = GET_LE_U_2(dcmp->dc_reason);
1184
1185 print_reason(ndo, reason);
1186 }
1187 break;
1188 default:
1189 ND_PRINT("reserved-ctltype? %x %u > %u", flags, src, dst);
1190 break;
1191 }
1192 break;
1193 default:
1194 ND_PRINT("reserved-type? %x %u > %u", flags, src, dst);
1195 break;
1196 }
1197 return (1);
1198
1199 trunc:
1200 return (0);
1201 }
1202
1203 static const struct tok reason2str[] = {
1204 { UC_OBJREJECT, "object rejected connect" },
1205 { UC_RESOURCES, "insufficient resources" },
1206 { UC_NOSUCHNODE, "unrecognized node name" },
1207 { DI_SHUT, "node is shutting down" },
1208 { UC_NOSUCHOBJ, "unrecognized object" },
1209 { UC_INVOBJFORMAT, "invalid object name format" },
1210 { UC_OBJTOOBUSY, "object too busy" },
1211 { DI_PROTOCOL, "protocol error discovered" },
1212 { DI_TPA, "third party abort" },
1213 { UC_USERABORT, "user abort" },
1214 { UC_INVNODEFORMAT, "invalid node name format" },
1215 { UC_LOCALSHUT, "local node shutting down" },
1216 { DI_LOCALRESRC, "insufficient local resources" },
1217 { DI_REMUSERRESRC, "insufficient remote user resources" },
1218 { UC_ACCESSREJECT, "invalid access control information" },
1219 { DI_BADACCNT, "bad ACCOUNT information" },
1220 { UC_NORESPONSE, "no response from object" },
1221 { UC_UNREACHABLE, "node unreachable" },
1222 { DC_NOLINK, "no link terminate" },
1223 { DC_COMPLETE, "disconnect complete" },
1224 { DI_BADIMAGE, "bad image data in connect" },
1225 { DI_SERVMISMATCH, "cryptographic service mismatch" },
1226 { 0, NULL }
1227 };
1228
1229 static void
1230 print_reason(netdissect_options *ndo,
1231 u_int reason)
1232 {
1233 ND_PRINT("%s ", tok2str(reason2str, "reason-%u", reason));
1234 }
1235
1236 const char *
1237 dnnum_string(netdissect_options *ndo, u_short dnaddr)
1238 {
1239 char *str;
1240 size_t siz;
1241 u_int area = (u_short)(dnaddr & AREAMASK) >> AREASHIFT;
1242 u_int node = dnaddr & NODEMASK;
1243
1244 /* malloc() return used by the 'dnaddrtable' hash table: do not free() */
1245 str = (char *)malloc(siz = sizeof("00.0000"));
1246 if (str == NULL)
1247 (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC, "dnnum_string: malloc");
1248 snprintf(str, siz, "%u.%u", area, node);
1249 return(str);
1250 }
1251
1252 const char *
1253 dnname_string(netdissect_options *ndo, u_short dnaddr)
1254 {
1255 #ifdef HAVE_DNET_HTOA
1256 struct dn_naddr dna;
1257 char *dnname;
1258
1259 dna.a_len = sizeof(short);
1260 memcpy((char *)dna.a_addr, (char *)&dnaddr, sizeof(short));
1261 dnname = dnet_htoa(&dna);
1262 if(dnname != NULL)
1263 return (strdup(dnname));
1264 else
1265 return(dnnum_string(ndo, dnaddr));
1266 #else
1267 return(dnnum_string(ndo, dnaddr)); /* punt */
1268 #endif
1269 }
[mirror] the TCPdump network dissector