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 struct mbuf;
31 struct rtentry;
32
33 #ifdef HAVE_NETDNET_DNETDB_H
34 #include <netdnet/dnetdb.h>
35 #endif
36
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40
41 #include "extract.h"
42 #include "netdissect.h"
43 #include "addrtoname.h"
44
45 static const char tstr[] = "[|decnet]";
46
47 #ifndef _WIN32
48 typedef uint8_t byte[1]; /* single byte field */
49 #else
50 /*
51 * the keyword 'byte' generates conflicts in Windows
52 */
53 typedef unsigned char Byte[1]; /* single byte field */
54 #define byte Byte
55 #endif /* _WIN32 */
56 typedef uint8_t word[2]; /* 2 byte field */
57 typedef uint8_t longword[4]; /* 4 bytes field */
58
59 /*
60 * Definitions for DECNET Phase IV protocol headers
61 */
62 union etheraddress {
63 uint8_t dne_addr[6]; /* full ethernet address */
64 struct {
65 uint8_t dne_hiord[4]; /* DECnet HIORD prefix */
66 uint8_t dne_nodeaddr[2]; /* DECnet node address */
67 } dne_remote;
68 };
69
70 typedef union etheraddress etheraddr; /* Ethernet address */
71
72 #define HIORD 0x000400aa /* high 32-bits of address (swapped) */
73
74 #define AREAMASK 0176000 /* mask for area field */
75 #define AREASHIFT 10 /* bit-offset for area field */
76 #define NODEMASK 01777 /* mask for node address field */
77
78 #define DN_MAXADDL 20 /* max size of DECnet address */
79 struct dn_naddr {
80 uint16_t a_len; /* length of address */
81 uint8_t a_addr[DN_MAXADDL]; /* address as bytes */
82 };
83
84 /*
85 * Define long and short header formats.
86 */
87 struct shorthdr
88 {
89 byte sh_flags; /* route flags */
90 word sh_dst; /* destination node address */
91 word sh_src; /* source node address */
92 byte sh_visits; /* visit count */
93 };
94
95 struct longhdr
96 {
97 byte lg_flags; /* route flags */
98 byte lg_darea; /* destination area (reserved) */
99 byte lg_dsarea; /* destination subarea (reserved) */
100 etheraddr lg_dst; /* destination id */
101 byte lg_sarea; /* source area (reserved) */
102 byte lg_ssarea; /* source subarea (reserved) */
103 etheraddr lg_src; /* source id */
104 byte lg_nextl2; /* next level 2 router (reserved) */
105 byte lg_visits; /* visit count */
106 byte lg_service; /* service class (reserved) */
107 byte lg_pt; /* protocol type (reserved) */
108 };
109
110 union routehdr
111 {
112 struct shorthdr rh_short; /* short route header */
113 struct longhdr rh_long; /* long route header */
114 };
115
116 /*
117 * Define the values of various fields in the protocol messages.
118 *
119 * 1. Data packet formats.
120 */
121 #define RMF_MASK 7 /* mask for message type */
122 #define RMF_SHORT 2 /* short message format */
123 #define RMF_LONG 6 /* long message format */
124 #ifndef RMF_RQR
125 #define RMF_RQR 010 /* request return to sender */
126 #define RMF_RTS 020 /* returning to sender */
127 #define RMF_IE 040 /* intra-ethernet packet */
128 #endif /* RMR_RQR */
129 #define RMF_FVER 0100 /* future version flag */
130 #define RMF_PAD 0200 /* pad field */
131 #define RMF_PADMASK 0177 /* pad field mask */
132
133 #define VIS_MASK 077 /* visit field mask */
134
135 /*
136 * 2. Control packet formats.
137 */
138 #define RMF_CTLMASK 017 /* mask for message type */
139 #define RMF_CTLMSG 01 /* control message indicator */
140 #define RMF_INIT 01 /* initialization message */
141 #define RMF_VER 03 /* verification message */
142 #define RMF_TEST 05 /* hello and test message */
143 #define RMF_L1ROUT 07 /* level 1 routing message */
144 #define RMF_L2ROUT 011 /* level 2 routing message */
145 #define RMF_RHELLO 013 /* router hello message */
146 #define RMF_EHELLO 015 /* endnode hello message */
147
148 #define TI_L2ROUT 01 /* level 2 router */
149 #define TI_L1ROUT 02 /* level 1 router */
150 #define TI_ENDNODE 03 /* endnode */
151 #define TI_VERIF 04 /* verification required */
152 #define TI_BLOCK 010 /* blocking requested */
153
154 #define VE_VERS 2 /* version number (2) */
155 #define VE_ECO 0 /* ECO number */
156 #define VE_UECO 0 /* user ECO number (0) */
157
158 #define P3_VERS 1 /* phase III version number (1) */
159 #define P3_ECO 3 /* ECO number (3) */
160 #define P3_UECO 0 /* user ECO number (0) */
161
162 #define II_L2ROUT 01 /* level 2 router */
163 #define II_L1ROUT 02 /* level 1 router */
164 #define II_ENDNODE 03 /* endnode */
165 #define II_VERIF 04 /* verification required */
166 #define II_NOMCAST 040 /* no multicast traffic accepted */
167 #define II_BLOCK 0100 /* blocking requested */
168 #define II_TYPEMASK 03 /* mask for node type */
169
170 #define TESTDATA 0252 /* test data bytes */
171 #define TESTLEN 1 /* length of transmitted test data */
172
173 /*
174 * Define control message formats.
175 */
176 struct initmsgIII /* phase III initialization message */
177 {
178 byte inIII_flags; /* route flags */
179 word inIII_src; /* source node address */
180 byte inIII_info; /* routing layer information */
181 word inIII_blksize; /* maximum data link block size */
182 byte inIII_vers; /* version number */
183 byte inIII_eco; /* ECO number */
184 byte inIII_ueco; /* user ECO number */
185 byte inIII_rsvd; /* reserved image field */
186 };
187
188 struct initmsg /* initialization message */
189 {
190 byte in_flags; /* route flags */
191 word in_src; /* source node address */
192 byte in_info; /* routing layer information */
193 word in_blksize; /* maximum data link block size */
194 byte in_vers; /* version number */
195 byte in_eco; /* ECO number */
196 byte in_ueco; /* user ECO number */
197 word in_hello; /* hello timer */
198 byte in_rsvd; /* reserved image field */
199 };
200
201 struct verifmsg /* verification message */
202 {
203 byte ve_flags; /* route flags */
204 word ve_src; /* source node address */
205 byte ve_fcnval; /* function value image field */
206 };
207
208 struct testmsg /* hello and test message */
209 {
210 byte te_flags; /* route flags */
211 word te_src; /* source node address */
212 byte te_data; /* test data image field */
213 };
214
215 struct l1rout /* level 1 routing message */
216 {
217 byte r1_flags; /* route flags */
218 word r1_src; /* source node address */
219 byte r1_rsvd; /* reserved field */
220 };
221
222 struct l2rout /* level 2 routing message */
223 {
224 byte r2_flags; /* route flags */
225 word r2_src; /* source node address */
226 byte r2_rsvd; /* reserved field */
227 };
228
229 struct rhellomsg /* router hello message */
230 {
231 byte rh_flags; /* route flags */
232 byte rh_vers; /* version number */
233 byte rh_eco; /* ECO number */
234 byte rh_ueco; /* user ECO number */
235 etheraddr rh_src; /* source id */
236 byte rh_info; /* routing layer information */
237 word rh_blksize; /* maximum data link block size */
238 byte rh_priority; /* router's priority */
239 byte rh_area; /* reserved */
240 word rh_hello; /* hello timer */
241 byte rh_mpd; /* reserved */
242 };
243
244 struct ehellomsg /* endnode hello message */
245 {
246 byte eh_flags; /* route flags */
247 byte eh_vers; /* version number */
248 byte eh_eco; /* ECO number */
249 byte eh_ueco; /* user ECO number */
250 etheraddr eh_src; /* source id */
251 byte eh_info; /* routing layer information */
252 word eh_blksize; /* maximum data link block size */
253 byte eh_area; /* area (reserved) */
254 byte eh_seed[8]; /* verification seed */
255 etheraddr eh_router; /* designated router */
256 word eh_hello; /* hello timer */
257 byte eh_mpd; /* (reserved) */
258 byte eh_data; /* test data image field */
259 };
260
261 union controlmsg
262 {
263 struct initmsg cm_init; /* initialization message */
264 struct verifmsg cm_ver; /* verification message */
265 struct testmsg cm_test; /* hello and test message */
266 struct l1rout cm_l1rou; /* level 1 routing message */
267 struct l2rout cm_l2rout; /* level 2 routing message */
268 struct rhellomsg cm_rhello; /* router hello message */
269 struct ehellomsg cm_ehello; /* endnode hello message */
270 };
271
272 /* Macros for decoding routing-info fields */
273 #define RI_COST(x) ((x)&0777)
274 #define RI_HOPS(x) (((x)>>10)&037)
275
276 /*
277 * NSP protocol fields and values.
278 */
279
280 #define NSP_TYPEMASK 014 /* mask to isolate type code */
281 #define NSP_SUBMASK 0160 /* mask to isolate subtype code */
282 #define NSP_SUBSHFT 4 /* shift to move subtype code */
283
284 #define MFT_DATA 0 /* data message */
285 #define MFT_ACK 04 /* acknowledgement message */
286 #define MFT_CTL 010 /* control message */
287
288 #define MFS_ILS 020 /* data or I/LS indicator */
289 #define MFS_BOM 040 /* beginning of message (data) */
290 #define MFS_MOM 0 /* middle of message (data) */
291 #define MFS_EOM 0100 /* end of message (data) */
292 #define MFS_INT 040 /* interrupt message */
293
294 #define MFS_DACK 0 /* data acknowledgement */
295 #define MFS_IACK 020 /* I/LS acknowledgement */
296 #define MFS_CACK 040 /* connect acknowledgement */
297
298 #define MFS_NOP 0 /* no operation */
299 #define MFS_CI 020 /* connect initiate */
300 #define MFS_CC 040 /* connect confirm */
301 #define MFS_DI 060 /* disconnect initiate */
302 #define MFS_DC 0100 /* disconnect confirm */
303 #define MFS_RCI 0140 /* retransmitted connect initiate */
304
305 #define SGQ_ACK 0100000 /* ack */
306 #define SGQ_NAK 0110000 /* negative ack */
307 #define SGQ_OACK 0120000 /* other channel ack */
308 #define SGQ_ONAK 0130000 /* other channel negative ack */
309 #define SGQ_MASK 07777 /* mask to isolate seq # */
310 #define SGQ_OTHER 020000 /* other channel qualifier */
311 #define SGQ_DELAY 010000 /* ack delay flag */
312
313 #define SGQ_EOM 0100000 /* pseudo flag for end-of-message */
314
315 #define LSM_MASK 03 /* mask for modifier field */
316 #define LSM_NOCHANGE 0 /* no change */
317 #define LSM_DONOTSEND 1 /* do not send data */
318 #define LSM_SEND 2 /* send data */
319
320 #define LSI_MASK 014 /* mask for interpretation field */
321 #define LSI_DATA 0 /* data segment or message count */
322 #define LSI_INTR 4 /* interrupt request count */
323 #define LSI_INTM 0377 /* funny marker for int. message */
324
325 #define COS_MASK 014 /* mask for flow control field */
326 #define COS_NONE 0 /* no flow control */
327 #define COS_SEGMENT 04 /* segment flow control */
328 #define COS_MESSAGE 010 /* message flow control */
329 #define COS_DEFAULT 1 /* default value for field */
330
331 #define COI_MASK 3 /* mask for version field */
332 #define COI_32 0 /* version 3.2 */
333 #define COI_31 1 /* version 3.1 */
334 #define COI_40 2 /* version 4.0 */
335 #define COI_41 3 /* version 4.1 */
336
337 #define MNU_MASK 140 /* mask for session control version */
338 #define MNU_10 000 /* session V1.0 */
339 #define MNU_20 040 /* session V2.0 */
340 #define MNU_ACCESS 1 /* access control present */
341 #define MNU_USRDATA 2 /* user data field present */
342 #define MNU_INVKPROXY 4 /* invoke proxy field present */
343 #define MNU_UICPROXY 8 /* use uic-based proxy */
344
345 #define DC_NORESOURCES 1 /* no resource reason code */
346 #define DC_NOLINK 41 /* no link terminate reason code */
347 #define DC_COMPLETE 42 /* disconnect complete reason code */
348
349 #define DI_NOERROR 0 /* user disconnect */
350 #define DI_SHUT 3 /* node is shutting down */
351 #define DI_NOUSER 4 /* destination end user does not exist */
352 #define DI_INVDEST 5 /* invalid end user destination */
353 #define DI_REMRESRC 6 /* insufficient remote resources */
354 #define DI_TPA 8 /* third party abort */
355 #define DI_PROTOCOL 7 /* protocol error discovered */
356 #define DI_ABORT 9 /* user abort */
357 #define DI_LOCALRESRC 32 /* insufficient local resources */
358 #define DI_REMUSERRESRC 33 /* insufficient remote user resources */
359 #define DI_BADACCESS 34 /* bad access control information */
360 #define DI_BADACCNT 36 /* bad ACCOUNT information */
361 #define DI_CONNECTABORT 38 /* connect request cancelled */
362 #define DI_TIMEDOUT 38 /* remote node or user crashed */
363 #define DI_UNREACHABLE 39 /* local timers expired due to ... */
364 #define DI_BADIMAGE 43 /* bad image data in connect */
365 #define DI_SERVMISMATCH 54 /* cryptographic service mismatch */
366
367 #define UC_OBJREJECT 0 /* object rejected connect */
368 #define UC_USERDISCONNECT 0 /* user disconnect */
369 #define UC_RESOURCES 1 /* insufficient resources (local or remote) */
370 #define UC_NOSUCHNODE 2 /* unrecognized node name */
371 #define UC_REMOTESHUT 3 /* remote node shutting down */
372 #define UC_NOSUCHOBJ 4 /* unrecognized object */
373 #define UC_INVOBJFORMAT 5 /* invalid object name format */
374 #define UC_OBJTOOBUSY 6 /* object too busy */
375 #define UC_NETWORKABORT 8 /* network abort */
376 #define UC_USERABORT 9 /* user abort */
377 #define UC_INVNODEFORMAT 10 /* invalid node name format */
378 #define UC_LOCALSHUT 11 /* local node shutting down */
379 #define UC_ACCESSREJECT 34 /* invalid access control information */
380 #define UC_NORESPONSE 38 /* no response from object */
381 #define UC_UNREACHABLE 39 /* node unreachable */
382
383 /*
384 * NSP message formats.
385 */
386 struct nsphdr /* general nsp header */
387 {
388 byte nh_flags; /* message flags */
389 word nh_dst; /* destination link address */
390 word nh_src; /* source link address */
391 };
392
393 struct seghdr /* data segment header */
394 {
395 byte sh_flags; /* message flags */
396 word sh_dst; /* destination link address */
397 word sh_src; /* source link address */
398 word sh_seq[3]; /* sequence numbers */
399 };
400
401 struct minseghdr /* minimum data segment header */
402 {
403 byte ms_flags; /* message flags */
404 word ms_dst; /* destination link address */
405 word ms_src; /* source link address */
406 word ms_seq; /* sequence number */
407 };
408
409 struct lsmsg /* link service message (after hdr) */
410 {
411 byte ls_lsflags; /* link service flags */
412 byte ls_fcval; /* flow control value */
413 };
414
415 struct ackmsg /* acknowledgement message */
416 {
417 byte ak_flags; /* message flags */
418 word ak_dst; /* destination link address */
419 word ak_src; /* source link address */
420 word ak_acknum[2]; /* acknowledgement numbers */
421 };
422
423 struct minackmsg /* minimum acknowledgement message */
424 {
425 byte mk_flags; /* message flags */
426 word mk_dst; /* destination link address */
427 word mk_src; /* source link address */
428 word mk_acknum; /* acknowledgement number */
429 };
430
431 struct ciackmsg /* connect acknowledgement message */
432 {
433 byte ck_flags; /* message flags */
434 word ck_dst; /* destination link address */
435 };
436
437 struct cimsg /* connect initiate message */
438 {
439 byte ci_flags; /* message flags */
440 word ci_dst; /* destination link address (0) */
441 word ci_src; /* source link address */
442 byte ci_services; /* requested services */
443 byte ci_info; /* information */
444 word ci_segsize; /* maximum segment size */
445 };
446
447 struct ccmsg /* connect confirm message */
448 {
449 byte cc_flags; /* message flags */
450 word cc_dst; /* destination link address */
451 word cc_src; /* source link address */
452 byte cc_services; /* requested services */
453 byte cc_info; /* information */
454 word cc_segsize; /* maximum segment size */
455 byte cc_optlen; /* optional data length */
456 };
457
458 struct cnmsg /* generic connect message */
459 {
460 byte cn_flags; /* message flags */
461 word cn_dst; /* destination link address */
462 word cn_src; /* source link address */
463 byte cn_services; /* requested services */
464 byte cn_info; /* information */
465 word cn_segsize; /* maximum segment size */
466 };
467
468 struct dimsg /* disconnect initiate message */
469 {
470 byte di_flags; /* message flags */
471 word di_dst; /* destination link address */
472 word di_src; /* source link address */
473 word di_reason; /* reason code */
474 byte di_optlen; /* optional data length */
475 };
476
477 struct dcmsg /* disconnect confirm message */
478 {
479 byte dc_flags; /* message flags */
480 word dc_dst; /* destination link address */
481 word dc_src; /* source link address */
482 word dc_reason; /* reason code */
483 };
484
485 /* Forwards */
486 static int print_decnet_ctlmsg(netdissect_options *, const union routehdr *, u_int, u_int);
487 static void print_t_info(netdissect_options *, int);
488 static int print_l1_routes(netdissect_options *, const char *, u_int);
489 static int print_l2_routes(netdissect_options *, const char *, u_int);
490 static void print_i_info(netdissect_options *, int);
491 static int print_elist(const char *, u_int);
492 static int print_nsp(netdissect_options *, const u_char *, u_int);
493 static void print_reason(netdissect_options *, int);
494
495 #ifndef HAVE_NETDNET_DNETDB_H_DNET_HTOA
496 extern char *dnet_htoa(struct dn_naddr *);
497 #endif
498
499 void
decnet_print(netdissect_options * ndo,register const u_char * ap,register u_int length,register u_int caplen)500 decnet_print(netdissect_options *ndo,
501 register const u_char *ap, register u_int length,
502 register u_int caplen)
503 {
504 register const union routehdr *rhp;
505 register int mflags;
506 int dst, src, hops;
507 u_int nsplen, pktlen;
508 const u_char *nspp;
509
510 if (length < sizeof(struct shorthdr)) {
511 ND_PRINT((ndo, "%s", tstr));
512 return;
513 }
514
515 ND_TCHECK2(*ap, sizeof(short));
516 pktlen = EXTRACT_LE_16BITS(ap);
517 if (pktlen < sizeof(struct shorthdr)) {
518 ND_PRINT((ndo, "%s", tstr));
519 return;
520 }
521 if (pktlen > length) {
522 ND_PRINT((ndo, "%s", tstr));
523 return;
524 }
525 length = pktlen;
526
527 rhp = (const union routehdr *)&(ap[sizeof(short)]);
528 ND_TCHECK(rhp->rh_short.sh_flags);
529 mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
530
531 if (mflags & RMF_PAD) {
532 /* pad bytes of some sort in front of message */
533 u_int padlen = mflags & RMF_PADMASK;
534 if (ndo->ndo_vflag)
535 ND_PRINT((ndo, "[pad:%d] ", padlen));
536 if (length < padlen + 2) {
537 ND_PRINT((ndo, "%s", tstr));
538 return;
539 }
540 ND_TCHECK2(ap[sizeof(short)], padlen);
541 ap += padlen;
542 length -= padlen;
543 caplen -= padlen;
544 rhp = (const union routehdr *)&(ap[sizeof(short)]);
545 ND_TCHECK(rhp->rh_short.sh_flags);
546 mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
547 }
548
549 if (mflags & RMF_FVER) {
550 ND_PRINT((ndo, "future-version-decnet"));
551 ND_DEFAULTPRINT(ap, min(length, caplen));
552 return;
553 }
554
555 /* is it a control message? */
556 if (mflags & RMF_CTLMSG) {
557 if (!print_decnet_ctlmsg(ndo, rhp, length, caplen))
558 goto trunc;
559 return;
560 }
561
562 switch (mflags & RMF_MASK) {
563 case RMF_LONG:
564 if (length < sizeof(struct longhdr)) {
565 ND_PRINT((ndo, "%s", tstr));
566 return;
567 }
568 ND_TCHECK(rhp->rh_long);
569 dst =
570 EXTRACT_LE_16BITS(rhp->rh_long.lg_dst.dne_remote.dne_nodeaddr);
571 src =
572 EXTRACT_LE_16BITS(rhp->rh_long.lg_src.dne_remote.dne_nodeaddr);
573 hops = EXTRACT_LE_8BITS(rhp->rh_long.lg_visits);
574 nspp = &(ap[sizeof(short) + sizeof(struct longhdr)]);
575 nsplen = length - sizeof(struct longhdr);
576 break;
577 case RMF_SHORT:
578 ND_TCHECK(rhp->rh_short);
579 dst = EXTRACT_LE_16BITS(rhp->rh_short.sh_dst);
580 src = EXTRACT_LE_16BITS(rhp->rh_short.sh_src);
581 hops = (EXTRACT_LE_8BITS(rhp->rh_short.sh_visits) & VIS_MASK)+1;
582 nspp = &(ap[sizeof(short) + sizeof(struct shorthdr)]);
583 nsplen = length - sizeof(struct shorthdr);
584 break;
585 default:
586 ND_PRINT((ndo, "unknown message flags under mask"));
587 ND_DEFAULTPRINT((const u_char *)ap, min(length, caplen));
588 return;
589 }
590
591 ND_PRINT((ndo, "%s > %s %d ",
592 dnaddr_string(ndo, src), dnaddr_string(ndo, dst), pktlen));
593 if (ndo->ndo_vflag) {
594 if (mflags & RMF_RQR)
595 ND_PRINT((ndo, "RQR "));
596 if (mflags & RMF_RTS)
597 ND_PRINT((ndo, "RTS "));
598 if (mflags & RMF_IE)
599 ND_PRINT((ndo, "IE "));
600 ND_PRINT((ndo, "%d hops ", hops));
601 }
602
603 if (!print_nsp(ndo, nspp, nsplen))
604 goto trunc;
605 return;
606
607 trunc:
608 ND_PRINT((ndo, "%s", tstr));
609 return;
610 }
611
612 static int
print_decnet_ctlmsg(netdissect_options * ndo,register const union routehdr * rhp,u_int length,u_int caplen)613 print_decnet_ctlmsg(netdissect_options *ndo,
614 register const union routehdr *rhp, u_int length,
615 u_int caplen)
616 {
617 /* Our caller has already checked for mflags */
618 int mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
619 register const union controlmsg *cmp = (const union controlmsg *)rhp;
620 int src, dst, info, blksize, eco, ueco, hello, other, vers;
621 etheraddr srcea, rtea;
622 int priority;
623 const char *rhpx = (const char *)rhp;
624 int ret;
625
626 switch (mflags & RMF_CTLMASK) {
627 case RMF_INIT:
628 ND_PRINT((ndo, "init "));
629 if (length < sizeof(struct initmsg))
630 goto trunc;
631 ND_TCHECK(cmp->cm_init);
632 src = EXTRACT_LE_16BITS(cmp->cm_init.in_src);
633 info = EXTRACT_LE_8BITS(cmp->cm_init.in_info);
634 blksize = EXTRACT_LE_16BITS(cmp->cm_init.in_blksize);
635 vers = EXTRACT_LE_8BITS(cmp->cm_init.in_vers);
636 eco = EXTRACT_LE_8BITS(cmp->cm_init.in_eco);
637 ueco = EXTRACT_LE_8BITS(cmp->cm_init.in_ueco);
638 hello = EXTRACT_LE_16BITS(cmp->cm_init.in_hello);
639 print_t_info(ndo, info);
640 ND_PRINT((ndo,
641 "src %sblksize %d vers %d eco %d ueco %d hello %d",
642 dnaddr_string(ndo, src), blksize, vers, eco, ueco,
643 hello));
644 ret = 1;
645 break;
646 case RMF_VER:
647 ND_PRINT((ndo, "verification "));
648 if (length < sizeof(struct verifmsg))
649 goto trunc;
650 ND_TCHECK(cmp->cm_ver);
651 src = EXTRACT_LE_16BITS(cmp->cm_ver.ve_src);
652 other = EXTRACT_LE_8BITS(cmp->cm_ver.ve_fcnval);
653 ND_PRINT((ndo, "src %s fcnval %o", dnaddr_string(ndo, src), other));
654 ret = 1;
655 break;
656 case RMF_TEST:
657 ND_PRINT((ndo, "test "));
658 if (length < sizeof(struct testmsg))
659 goto trunc;
660 ND_TCHECK(cmp->cm_test);
661 src = EXTRACT_LE_16BITS(cmp->cm_test.te_src);
662 other = EXTRACT_LE_8BITS(cmp->cm_test.te_data);
663 ND_PRINT((ndo, "src %s data %o", dnaddr_string(ndo, src), other));
664 ret = 1;
665 break;
666 case RMF_L1ROUT:
667 ND_PRINT((ndo, "lev-1-routing "));
668 if (length < sizeof(struct l1rout))
669 goto trunc;
670 ND_TCHECK(cmp->cm_l1rou);
671 src = EXTRACT_LE_16BITS(cmp->cm_l1rou.r1_src);
672 ND_PRINT((ndo, "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((ndo, "lev-2-routing "));
678 if (length < sizeof(struct l2rout))
679 goto trunc;
680 ND_TCHECK(cmp->cm_l2rout);
681 src = EXTRACT_LE_16BITS(cmp->cm_l2rout.r2_src);
682 ND_PRINT((ndo, "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((ndo, "router-hello "));
688 if (length < sizeof(struct rhellomsg))
689 goto trunc;
690 ND_TCHECK(cmp->cm_rhello);
691 vers = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_vers);
692 eco = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_eco);
693 ueco = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_ueco);
694 memcpy((char *)&srcea, (const char *)&(cmp->cm_rhello.rh_src),
695 sizeof(srcea));
696 src = EXTRACT_LE_16BITS(srcea.dne_remote.dne_nodeaddr);
697 info = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_info);
698 blksize = EXTRACT_LE_16BITS(cmp->cm_rhello.rh_blksize);
699 priority = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_priority);
700 hello = EXTRACT_LE_16BITS(cmp->cm_rhello.rh_hello);
701 print_i_info(ndo, info);
702 ND_PRINT((ndo,
703 "vers %d eco %d ueco %d src %s blksize %d pri %d hello %d",
704 vers, eco, ueco, dnaddr_string(ndo, src),
705 blksize, priority, hello));
706 ret = print_elist(&(rhpx[sizeof(struct rhellomsg)]),
707 length - sizeof(struct rhellomsg));
708 break;
709 case RMF_EHELLO:
710 ND_PRINT((ndo, "endnode-hello "));
711 if (length < sizeof(struct ehellomsg))
712 goto trunc;
713 ND_TCHECK(cmp->cm_ehello);
714 vers = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_vers);
715 eco = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_eco);
716 ueco = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_ueco);
717 memcpy((char *)&srcea, (const char *)&(cmp->cm_ehello.eh_src),
718 sizeof(srcea));
719 src = EXTRACT_LE_16BITS(srcea.dne_remote.dne_nodeaddr);
720 info = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_info);
721 blksize = EXTRACT_LE_16BITS(cmp->cm_ehello.eh_blksize);
722 /*seed*/
723 memcpy((char *)&rtea, (const char *)&(cmp->cm_ehello.eh_router),
724 sizeof(rtea));
725 dst = EXTRACT_LE_16BITS(rtea.dne_remote.dne_nodeaddr);
726 hello = EXTRACT_LE_16BITS(cmp->cm_ehello.eh_hello);
727 other = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_data);
728 print_i_info(ndo, info);
729 ND_PRINT((ndo,
730 "vers %d eco %d ueco %d src %s blksize %d rtr %s hello %d data %o",
731 vers, eco, ueco, dnaddr_string(ndo, src),
732 blksize, dnaddr_string(ndo, dst), hello, other));
733 ret = 1;
734 break;
735
736 default:
737 ND_PRINT((ndo, "unknown control message"));
738 ND_DEFAULTPRINT((const u_char *)rhp, min(length, caplen));
739 ret = 1;
740 break;
741 }
742 return (ret);
743
744 trunc:
745 return (0);
746 }
747
748 static void
print_t_info(netdissect_options * ndo,int info)749 print_t_info(netdissect_options *ndo,
750 int info)
751 {
752 int ntype = info & 3;
753 switch (ntype) {
754 case 0: ND_PRINT((ndo, "reserved-ntype? ")); break;
755 case TI_L2ROUT: ND_PRINT((ndo, "l2rout ")); break;
756 case TI_L1ROUT: ND_PRINT((ndo, "l1rout ")); break;
757 case TI_ENDNODE: ND_PRINT((ndo, "endnode ")); break;
758 }
759 if (info & TI_VERIF)
760 ND_PRINT((ndo, "verif "));
761 if (info & TI_BLOCK)
762 ND_PRINT((ndo, "blo "));
763 }
764
765 static int
print_l1_routes(netdissect_options * ndo,const char * rp,u_int len)766 print_l1_routes(netdissect_options *ndo,
767 const char *rp, u_int len)
768 {
769 int count;
770 int id;
771 int info;
772
773 /* The last short is a checksum */
774 while (len > (3 * sizeof(short))) {
775 ND_TCHECK2(*rp, 3 * sizeof(short));
776 count = EXTRACT_LE_16BITS(rp);
777 if (count > 1024)
778 return (1); /* seems to be bogus from here on */
779 rp += sizeof(short);
780 len -= sizeof(short);
781 id = EXTRACT_LE_16BITS(rp);
782 rp += sizeof(short);
783 len -= sizeof(short);
784 info = EXTRACT_LE_16BITS(rp);
785 rp += sizeof(short);
786 len -= sizeof(short);
787 ND_PRINT((ndo, "{ids %d-%d cost %d hops %d} ", id, id + count,
788 RI_COST(info), RI_HOPS(info)));
789 }
790 return (1);
791
792 trunc:
793 return (0);
794 }
795
796 static int
print_l2_routes(netdissect_options * ndo,const char * rp,u_int len)797 print_l2_routes(netdissect_options *ndo,
798 const char *rp, u_int len)
799 {
800 int count;
801 int area;
802 int info;
803
804 /* The last short is a checksum */
805 while (len > (3 * sizeof(short))) {
806 ND_TCHECK2(*rp, 3 * sizeof(short));
807 count = EXTRACT_LE_16BITS(rp);
808 if (count > 1024)
809 return (1); /* seems to be bogus from here on */
810 rp += sizeof(short);
811 len -= sizeof(short);
812 area = EXTRACT_LE_16BITS(rp);
813 rp += sizeof(short);
814 len -= sizeof(short);
815 info = EXTRACT_LE_16BITS(rp);
816 rp += sizeof(short);
817 len -= sizeof(short);
818 ND_PRINT((ndo, "{areas %d-%d cost %d hops %d} ", area, area + count,
819 RI_COST(info), RI_HOPS(info)));
820 }
821 return (1);
822
823 trunc:
824 return (0);
825 }
826
827 static void
print_i_info(netdissect_options * ndo,int info)828 print_i_info(netdissect_options *ndo,
829 int info)
830 {
831 int ntype = info & II_TYPEMASK;
832 switch (ntype) {
833 case 0: ND_PRINT((ndo, "reserved-ntype? ")); break;
834 case II_L2ROUT: ND_PRINT((ndo, "l2rout ")); break;
835 case II_L1ROUT: ND_PRINT((ndo, "l1rout ")); break;
836 case II_ENDNODE: ND_PRINT((ndo, "endnode ")); break;
837 }
838 if (info & II_VERIF)
839 ND_PRINT((ndo, "verif "));
840 if (info & II_NOMCAST)
841 ND_PRINT((ndo, "nomcast "));
842 if (info & II_BLOCK)
843 ND_PRINT((ndo, "blo "));
844 }
845
846 static int
print_elist(const char * elp _U_,u_int len _U_)847 print_elist(const char *elp _U_, u_int len _U_)
848 {
849 /* Not enough examples available for me to debug this */
850 return (1);
851 }
852
853 static int
print_nsp(netdissect_options * ndo,const u_char * nspp,u_int nsplen)854 print_nsp(netdissect_options *ndo,
855 const u_char *nspp, u_int nsplen)
856 {
857 const struct nsphdr *nsphp = (const struct nsphdr *)nspp;
858 int dst, src, flags;
859
860 if (nsplen < sizeof(struct nsphdr))
861 goto trunc;
862 ND_TCHECK(*nsphp);
863 flags = EXTRACT_LE_8BITS(nsphp->nh_flags);
864 dst = EXTRACT_LE_16BITS(nsphp->nh_dst);
865 src = EXTRACT_LE_16BITS(nsphp->nh_src);
866
867 switch (flags & NSP_TYPEMASK) {
868 case MFT_DATA:
869 switch (flags & NSP_SUBMASK) {
870 case MFS_BOM:
871 case MFS_MOM:
872 case MFS_EOM:
873 case MFS_BOM+MFS_EOM:
874 ND_PRINT((ndo, "data %d>%d ", src, dst));
875 {
876 const struct seghdr *shp = (const struct seghdr *)nspp;
877 int ack;
878 u_int data_off = sizeof(struct minseghdr);
879
880 if (nsplen < data_off)
881 goto trunc;
882 ND_TCHECK(shp->sh_seq[0]);
883 ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
884 if (ack & SGQ_ACK) { /* acknum field */
885 if ((ack & SGQ_NAK) == SGQ_NAK)
886 ND_PRINT((ndo, "nak %d ", ack & SGQ_MASK));
887 else
888 ND_PRINT((ndo, "ack %d ", ack & SGQ_MASK));
889 data_off += sizeof(short);
890 if (nsplen < data_off)
891 goto trunc;
892 ND_TCHECK(shp->sh_seq[1]);
893 ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
894 if (ack & SGQ_OACK) { /* ackoth field */
895 if ((ack & SGQ_ONAK) == SGQ_ONAK)
896 ND_PRINT((ndo, "onak %d ", ack & SGQ_MASK));
897 else
898 ND_PRINT((ndo, "oack %d ", ack & SGQ_MASK));
899 data_off += sizeof(short);
900 if (nsplen < data_off)
901 goto trunc;
902 ND_TCHECK(shp->sh_seq[2]);
903 ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
904 }
905 }
906 ND_PRINT((ndo, "seg %d ", ack & SGQ_MASK));
907 }
908 break;
909 case MFS_ILS+MFS_INT:
910 ND_PRINT((ndo, "intr "));
911 {
912 const struct seghdr *shp = (const struct seghdr *)nspp;
913 int ack;
914 u_int data_off = sizeof(struct minseghdr);
915
916 if (nsplen < data_off)
917 goto trunc;
918 ND_TCHECK(shp->sh_seq[0]);
919 ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
920 if (ack & SGQ_ACK) { /* acknum field */
921 if ((ack & SGQ_NAK) == SGQ_NAK)
922 ND_PRINT((ndo, "nak %d ", ack & SGQ_MASK));
923 else
924 ND_PRINT((ndo, "ack %d ", ack & SGQ_MASK));
925 data_off += sizeof(short);
926 if (nsplen < data_off)
927 goto trunc;
928 ND_TCHECK(shp->sh_seq[1]);
929 ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
930 if (ack & SGQ_OACK) { /* ackdat field */
931 if ((ack & SGQ_ONAK) == SGQ_ONAK)
932 ND_PRINT((ndo, "nakdat %d ", ack & SGQ_MASK));
933 else
934 ND_PRINT((ndo, "ackdat %d ", ack & SGQ_MASK));
935 data_off += sizeof(short);
936 if (nsplen < data_off)
937 goto trunc;
938 ND_TCHECK(shp->sh_seq[2]);
939 ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
940 }
941 }
942 ND_PRINT((ndo, "seg %d ", ack & SGQ_MASK));
943 }
944 break;
945 case MFS_ILS:
946 ND_PRINT((ndo, "link-service %d>%d ", src, dst));
947 {
948 const struct seghdr *shp = (const struct seghdr *)nspp;
949 const struct lsmsg *lsmp =
950 (const struct lsmsg *)&(nspp[sizeof(struct seghdr)]);
951 int ack;
952 int lsflags, fcval;
953
954 if (nsplen < sizeof(struct seghdr) + sizeof(struct lsmsg))
955 goto trunc;
956 ND_TCHECK(shp->sh_seq[0]);
957 ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
958 if (ack & SGQ_ACK) { /* acknum field */
959 if ((ack & SGQ_NAK) == SGQ_NAK)
960 ND_PRINT((ndo, "nak %d ", ack & SGQ_MASK));
961 else
962 ND_PRINT((ndo, "ack %d ", ack & SGQ_MASK));
963 ND_TCHECK(shp->sh_seq[1]);
964 ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
965 if (ack & SGQ_OACK) { /* ackdat field */
966 if ((ack & SGQ_ONAK) == SGQ_ONAK)
967 ND_PRINT((ndo, "nakdat %d ", ack & SGQ_MASK));
968 else
969 ND_PRINT((ndo, "ackdat %d ", ack & SGQ_MASK));
970 ND_TCHECK(shp->sh_seq[2]);
971 ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
972 }
973 }
974 ND_PRINT((ndo, "seg %d ", ack & SGQ_MASK));
975 ND_TCHECK(*lsmp);
976 lsflags = EXTRACT_LE_8BITS(lsmp->ls_lsflags);
977 fcval = EXTRACT_LE_8BITS(lsmp->ls_fcval);
978 switch (lsflags & LSI_MASK) {
979 case LSI_DATA:
980 ND_PRINT((ndo, "dat seg count %d ", fcval));
981 switch (lsflags & LSM_MASK) {
982 case LSM_NOCHANGE:
983 break;
984 case LSM_DONOTSEND:
985 ND_PRINT((ndo, "donotsend-data "));
986 break;
987 case LSM_SEND:
988 ND_PRINT((ndo, "send-data "));
989 break;
990 default:
991 ND_PRINT((ndo, "reserved-fcmod? %x", lsflags));
992 break;
993 }
994 break;
995 case LSI_INTR:
996 ND_PRINT((ndo, "intr req count %d ", fcval));
997 break;
998 default:
999 ND_PRINT((ndo, "reserved-fcval-int? %x", lsflags));
1000 break;
1001 }
1002 }
1003 break;
1004 default:
1005 ND_PRINT((ndo, "reserved-subtype? %x %d > %d", flags, src, dst));
1006 break;
1007 }
1008 break;
1009 case MFT_ACK:
1010 switch (flags & NSP_SUBMASK) {
1011 case MFS_DACK:
1012 ND_PRINT((ndo, "data-ack %d>%d ", src, dst));
1013 {
1014 const struct ackmsg *amp = (const struct ackmsg *)nspp;
1015 int ack;
1016
1017 if (nsplen < sizeof(struct ackmsg))
1018 goto trunc;
1019 ND_TCHECK(*amp);
1020 ack = EXTRACT_LE_16BITS(amp->ak_acknum[0]);
1021 if (ack & SGQ_ACK) { /* acknum field */
1022 if ((ack & SGQ_NAK) == SGQ_NAK)
1023 ND_PRINT((ndo, "nak %d ", ack & SGQ_MASK));
1024 else
1025 ND_PRINT((ndo, "ack %d ", ack & SGQ_MASK));
1026 ack = EXTRACT_LE_16BITS(amp->ak_acknum[1]);
1027 if (ack & SGQ_OACK) { /* ackoth field */
1028 if ((ack & SGQ_ONAK) == SGQ_ONAK)
1029 ND_PRINT((ndo, "onak %d ", ack & SGQ_MASK));
1030 else
1031 ND_PRINT((ndo, "oack %d ", ack & SGQ_MASK));
1032 }
1033 }
1034 }
1035 break;
1036 case MFS_IACK:
1037 ND_PRINT((ndo, "ils-ack %d>%d ", src, dst));
1038 {
1039 const struct ackmsg *amp = (const struct ackmsg *)nspp;
1040 int ack;
1041
1042 if (nsplen < sizeof(struct ackmsg))
1043 goto trunc;
1044 ND_TCHECK(*amp);
1045 ack = EXTRACT_LE_16BITS(amp->ak_acknum[0]);
1046 if (ack & SGQ_ACK) { /* acknum field */
1047 if ((ack & SGQ_NAK) == SGQ_NAK)
1048 ND_PRINT((ndo, "nak %d ", ack & SGQ_MASK));
1049 else
1050 ND_PRINT((ndo, "ack %d ", ack & SGQ_MASK));
1051 ND_TCHECK(amp->ak_acknum[1]);
1052 ack = EXTRACT_LE_16BITS(amp->ak_acknum[1]);
1053 if (ack & SGQ_OACK) { /* ackdat field */
1054 if ((ack & SGQ_ONAK) == SGQ_ONAK)
1055 ND_PRINT((ndo, "nakdat %d ", ack & SGQ_MASK));
1056 else
1057 ND_PRINT((ndo, "ackdat %d ", ack & SGQ_MASK));
1058 }
1059 }
1060 }
1061 break;
1062 case MFS_CACK:
1063 ND_PRINT((ndo, "conn-ack %d", dst));
1064 break;
1065 default:
1066 ND_PRINT((ndo, "reserved-acktype? %x %d > %d", flags, src, dst));
1067 break;
1068 }
1069 break;
1070 case MFT_CTL:
1071 switch (flags & NSP_SUBMASK) {
1072 case MFS_CI:
1073 case MFS_RCI:
1074 if ((flags & NSP_SUBMASK) == MFS_CI)
1075 ND_PRINT((ndo, "conn-initiate "));
1076 else
1077 ND_PRINT((ndo, "retrans-conn-initiate "));
1078 ND_PRINT((ndo, "%d>%d ", src, dst));
1079 {
1080 const struct cimsg *cimp = (const struct cimsg *)nspp;
1081 int services, info, segsize;
1082
1083 if (nsplen < sizeof(struct cimsg))
1084 goto trunc;
1085 ND_TCHECK(*cimp);
1086 services = EXTRACT_LE_8BITS(cimp->ci_services);
1087 info = EXTRACT_LE_8BITS(cimp->ci_info);
1088 segsize = EXTRACT_LE_16BITS(cimp->ci_segsize);
1089
1090 switch (services & COS_MASK) {
1091 case COS_NONE:
1092 break;
1093 case COS_SEGMENT:
1094 ND_PRINT((ndo, "seg "));
1095 break;
1096 case COS_MESSAGE:
1097 ND_PRINT((ndo, "msg "));
1098 break;
1099 }
1100 switch (info & COI_MASK) {
1101 case COI_32:
1102 ND_PRINT((ndo, "ver 3.2 "));
1103 break;
1104 case COI_31:
1105 ND_PRINT((ndo, "ver 3.1 "));
1106 break;
1107 case COI_40:
1108 ND_PRINT((ndo, "ver 4.0 "));
1109 break;
1110 case COI_41:
1111 ND_PRINT((ndo, "ver 4.1 "));
1112 break;
1113 }
1114 ND_PRINT((ndo, "segsize %d ", segsize));
1115 }
1116 break;
1117 case MFS_CC:
1118 ND_PRINT((ndo, "conn-confirm %d>%d ", src, dst));
1119 {
1120 const struct ccmsg *ccmp = (const struct ccmsg *)nspp;
1121 int services, info;
1122 u_int segsize, optlen;
1123
1124 if (nsplen < sizeof(struct ccmsg))
1125 goto trunc;
1126 ND_TCHECK(*ccmp);
1127 services = EXTRACT_LE_8BITS(ccmp->cc_services);
1128 info = EXTRACT_LE_8BITS(ccmp->cc_info);
1129 segsize = EXTRACT_LE_16BITS(ccmp->cc_segsize);
1130 optlen = EXTRACT_LE_8BITS(ccmp->cc_optlen);
1131
1132 switch (services & COS_MASK) {
1133 case COS_NONE:
1134 break;
1135 case COS_SEGMENT:
1136 ND_PRINT((ndo, "seg "));
1137 break;
1138 case COS_MESSAGE:
1139 ND_PRINT((ndo, "msg "));
1140 break;
1141 }
1142 switch (info & COI_MASK) {
1143 case COI_32:
1144 ND_PRINT((ndo, "ver 3.2 "));
1145 break;
1146 case COI_31:
1147 ND_PRINT((ndo, "ver 3.1 "));
1148 break;
1149 case COI_40:
1150 ND_PRINT((ndo, "ver 4.0 "));
1151 break;
1152 case COI_41:
1153 ND_PRINT((ndo, "ver 4.1 "));
1154 break;
1155 }
1156 ND_PRINT((ndo, "segsize %d ", segsize));
1157 if (optlen) {
1158 ND_PRINT((ndo, "optlen %d ", optlen));
1159 }
1160 }
1161 break;
1162 case MFS_DI:
1163 ND_PRINT((ndo, "disconn-initiate %d>%d ", src, dst));
1164 {
1165 const struct dimsg *dimp = (const struct dimsg *)nspp;
1166 int reason;
1167 u_int optlen;
1168
1169 if (nsplen < sizeof(struct dimsg))
1170 goto trunc;
1171 ND_TCHECK(*dimp);
1172 reason = EXTRACT_LE_16BITS(dimp->di_reason);
1173 optlen = EXTRACT_LE_8BITS(dimp->di_optlen);
1174
1175 print_reason(ndo, reason);
1176 if (optlen) {
1177 ND_PRINT((ndo, "optlen %d ", optlen));
1178 }
1179 }
1180 break;
1181 case MFS_DC:
1182 ND_PRINT((ndo, "disconn-confirm %d>%d ", src, dst));
1183 {
1184 const struct dcmsg *dcmp = (const struct dcmsg *)nspp;
1185 int reason;
1186
1187 ND_TCHECK(*dcmp);
1188 reason = EXTRACT_LE_16BITS(dcmp->dc_reason);
1189
1190 print_reason(ndo, reason);
1191 }
1192 break;
1193 default:
1194 ND_PRINT((ndo, "reserved-ctltype? %x %d > %d", flags, src, dst));
1195 break;
1196 }
1197 break;
1198 default:
1199 ND_PRINT((ndo, "reserved-type? %x %d > %d", flags, src, dst));
1200 break;
1201 }
1202 return (1);
1203
1204 trunc:
1205 return (0);
1206 }
1207
1208 static const struct tok reason2str[] = {
1209 { UC_OBJREJECT, "object rejected connect" },
1210 { UC_RESOURCES, "insufficient resources" },
1211 { UC_NOSUCHNODE, "unrecognized node name" },
1212 { DI_SHUT, "node is shutting down" },
1213 { UC_NOSUCHOBJ, "unrecognized object" },
1214 { UC_INVOBJFORMAT, "invalid object name format" },
1215 { UC_OBJTOOBUSY, "object too busy" },
1216 { DI_PROTOCOL, "protocol error discovered" },
1217 { DI_TPA, "third party abort" },
1218 { UC_USERABORT, "user abort" },
1219 { UC_INVNODEFORMAT, "invalid node name format" },
1220 { UC_LOCALSHUT, "local node shutting down" },
1221 { DI_LOCALRESRC, "insufficient local resources" },
1222 { DI_REMUSERRESRC, "insufficient remote user resources" },
1223 { UC_ACCESSREJECT, "invalid access control information" },
1224 { DI_BADACCNT, "bad ACCOUNT information" },
1225 { UC_NORESPONSE, "no response from object" },
1226 { UC_UNREACHABLE, "node unreachable" },
1227 { DC_NOLINK, "no link terminate" },
1228 { DC_COMPLETE, "disconnect complete" },
1229 { DI_BADIMAGE, "bad image data in connect" },
1230 { DI_SERVMISMATCH, "cryptographic service mismatch" },
1231 { 0, NULL }
1232 };
1233
1234 static void
print_reason(netdissect_options * ndo,register int reason)1235 print_reason(netdissect_options *ndo,
1236 register int reason)
1237 {
1238 ND_PRINT((ndo, "%s ", tok2str(reason2str, "reason-%d", reason)));
1239 }
1240
1241 const char *
dnnum_string(netdissect_options * ndo,u_short dnaddr)1242 dnnum_string(netdissect_options *ndo, u_short dnaddr)
1243 {
1244 char *str;
1245 size_t siz;
1246 int area = (u_short)(dnaddr & AREAMASK) >> AREASHIFT;
1247 int node = dnaddr & NODEMASK;
1248
1249 str = (char *)malloc(siz = sizeof("00.0000"));
1250 if (str == NULL)
1251 (*ndo->ndo_error)(ndo, "dnnum_string: malloc");
1252 snprintf(str, siz, "%d.%d", area, node);
1253 return(str);
1254 }
1255
1256 const char *
dnname_string(netdissect_options * ndo,u_short dnaddr)1257 dnname_string(netdissect_options *ndo, u_short dnaddr)
1258 {
1259 #ifdef HAVE_DNET_HTOA
1260 struct dn_naddr dna;
1261 char *dnname;
1262
1263 dna.a_len = sizeof(short);
1264 memcpy((char *)dna.a_addr, (char *)&dnaddr, sizeof(short));
1265 dnname = dnet_htoa(&dna);
1266 if(dnname != NULL)
1267 return (strdup(dnname));
1268 else
1269 return(dnnum_string(ndo, dnaddr));
1270 #else
1271 return(dnnum_string(ndo, dnaddr)); /* punt */
1272 #endif
1273 }
1274