1 /* $OpenBSD: print-decnet.c,v 1.19 2021/12/01 18:28:45 deraadt Exp $ */
2
3 /*
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that: (1) source code distributions
9 * retain the above copyright notice and this paragraph in its entirety, (2)
10 * distributions including binary code include the above copyright notice and
11 * this paragraph in its entirety in the documentation or other materials
12 * provided with the distribution, and (3) all advertising materials mentioning
13 * features or use of this software display the following acknowledgement:
14 * ``This product includes software developed by the University of California,
15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
16 * the University nor the names of its contributors may be used to endorse
17 * or promote products derived from this software without specific prior
18 * written permission.
19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22 */
23
24 #include <sys/time.h>
25 #include <sys/socket.h>
26
27 #include <net/if.h>
28
29 #ifdef HAVE_LIBDNET
30 #include <netdnet/dnetdb.h>
31 #endif
32
33 #include <ctype.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <unistd.h>
38
39 #include "decnet.h"
40 #include "extract.h"
41 #include "interface.h"
42 #include "addrtoname.h"
43
44 /* Forwards */
45 static int print_decnet_ctlmsg(const union routehdr *, u_int, u_int);
46 static void print_t_info(int);
47 static int print_l1_routes(const char *, u_int);
48 static int print_l2_routes(const char *, u_int);
49 static void print_i_info(int);
50 static int print_elist(const char *, u_int);
51 static int print_nsp(const u_char *, u_int);
52 static void print_reason(int);
53 #ifdef PRINT_NSPDATA
54 static void pdata(u_char *, int);
55 #endif
56
57 #ifdef HAVE_LIBDNET
58 extern char *dnet_htoa(struct dn_naddr *);
59 #endif
60
61 void
decnet_print(const u_char * ap,u_int length,u_int caplen)62 decnet_print(const u_char *ap, u_int length, u_int caplen)
63 {
64 static union routehdr rhcopy;
65 union routehdr *rhp = &rhcopy;
66 int mflags;
67 int dst, src, hops;
68 u_int rhlen, nsplen, pktlen;
69 const u_char *nspp;
70
71 if (length < sizeof(struct shorthdr)) {
72 printf("[|decnet]");
73 return;
74 }
75
76 TCHECK2(*ap, sizeof(short));
77 pktlen = EXTRACT_LE_16BITS(ap);
78 if (pktlen < sizeof(struct shorthdr)) {
79 printf("[|decnet]");
80 return;
81 }
82 if (pktlen > length) {
83 printf("[|decnet]");
84 return;
85 }
86 length = pktlen;
87
88 rhlen = min(length, caplen);
89 rhlen = min(rhlen, sizeof(*rhp));
90 memcpy((char *)rhp, (char *)&(ap[sizeof(short)]), rhlen);
91
92 TCHECK(rhp->rh_short.sh_flags);
93 mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
94
95 if (mflags & RMF_PAD) {
96 /* pad bytes of some sort in front of message */
97 u_int padlen = mflags & RMF_PADMASK;
98 if (vflag)
99 printf("[pad:%d] ", padlen);
100 if (length < padlen + 2) {
101 printf("[|decnet]");
102 return;
103 }
104 TCHECK2(ap[sizeof(short)], padlen);
105 ap += padlen;
106 length -= padlen;
107 caplen -= padlen;
108 rhlen = min(length, caplen);
109 rhlen = min(rhlen, sizeof(*rhp));
110 memcpy((char *)rhp, (char *)&(ap[sizeof(short)]), rhlen);
111 mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
112 }
113
114 if (mflags & RMF_FVER) {
115 printf("future-version-decnet");
116 default_print(ap, min(length, caplen));
117 return;
118 }
119
120 /* is it a control message? */
121 if (mflags & RMF_CTLMSG) {
122 if(!print_decnet_ctlmsg(rhp, length, caplen))
123 goto trunc;
124 return;
125 }
126
127 switch (mflags & RMF_MASK) {
128 case RMF_LONG:
129 if (length < sizeof(struct longhdr)) {
130 printf("[|decnet]");
131 return;
132 }
133 TCHECK(rhp->rh_long);
134 dst =
135 EXTRACT_LE_16BITS(rhp->rh_long.lg_dst.dne_remote.dne_nodeaddr);
136 src =
137 EXTRACT_LE_16BITS(rhp->rh_long.lg_src.dne_remote.dne_nodeaddr);
138 hops = EXTRACT_LE_8BITS(rhp->rh_long.lg_visits);
139 nspp = &(ap[sizeof(short) + sizeof(struct longhdr)]);
140 nsplen = length - sizeof(struct longhdr);
141 break;
142 case RMF_SHORT:
143 TCHECK(rhp->rh_short);
144 dst = EXTRACT_LE_16BITS(rhp->rh_short.sh_dst);
145 src = EXTRACT_LE_16BITS(rhp->rh_short.sh_src);
146 hops = (EXTRACT_LE_8BITS(rhp->rh_short.sh_visits) & VIS_MASK)+1;
147 nspp = &(ap[sizeof(short) + sizeof(struct shorthdr)]);
148 nsplen = length - sizeof(struct shorthdr);
149 break;
150 default:
151 printf("unknown message flags under mask");
152 default_print((u_char *)ap, min(length, caplen));
153 return;
154 }
155
156 printf("%s > %s %d ",
157 dnaddr_string(src), dnaddr_string(dst), pktlen);
158 if (vflag) {
159 if (mflags & RMF_RQR)
160 printf("RQR ");
161 if (mflags & RMF_RTS)
162 printf("RTS ");
163 if (mflags & RMF_IE)
164 printf("IE ");
165 printf("%d hops ", hops);
166 }
167
168 if (!print_nsp(nspp, nsplen))
169 goto trunc;
170 return;
171
172 trunc:
173 printf("[|decnet]");
174 return;
175 }
176
177 static int
print_decnet_ctlmsg(const union routehdr * rhp,u_int length,u_int caplen)178 print_decnet_ctlmsg(const union routehdr *rhp, u_int length,
179 u_int caplen)
180 {
181 int mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
182 union controlmsg *cmp = (union controlmsg *)rhp;
183 int src, dst, info, blksize, eco, ueco, hello, other, vers;
184 etheraddr srcea, rtea;
185 int priority;
186 char *rhpx = (char *)rhp;
187 int ret;
188
189 switch (mflags & RMF_CTLMASK) {
190 case RMF_INIT:
191 printf("init ");
192 if (length < sizeof(struct initmsg))
193 goto trunc;
194 TCHECK(cmp->cm_init);
195 src = EXTRACT_LE_16BITS(cmp->cm_init.in_src);
196 info = EXTRACT_LE_8BITS(cmp->cm_init.in_info);
197 blksize = EXTRACT_LE_16BITS(cmp->cm_init.in_blksize);
198 vers = EXTRACT_LE_8BITS(cmp->cm_init.in_vers);
199 eco = EXTRACT_LE_8BITS(cmp->cm_init.in_eco);
200 ueco = EXTRACT_LE_8BITS(cmp->cm_init.in_ueco);
201 hello = EXTRACT_LE_16BITS(cmp->cm_init.in_hello);
202 print_t_info(info);
203 printf("src %sblksize %d vers %d eco %d ueco %d hello %d",
204 dnaddr_string(src), blksize, vers, eco, ueco, hello);
205
206 ret = 1;
207 break;
208 case RMF_VER:
209 printf("verification ");
210 if (length < sizeof(struct verifmsg))
211 goto trunc;
212 TCHECK(cmp->cm_ver);
213 src = EXTRACT_LE_16BITS(cmp->cm_ver.ve_src);
214 other = EXTRACT_LE_8BITS(cmp->cm_ver.ve_fcnval);
215 printf("src %s fcnval %o", dnaddr_string(src), other);
216 ret = 1;
217 break;
218 case RMF_TEST:
219 printf("test ");
220 if (length < sizeof(struct testmsg))
221 goto trunc;
222 TCHECK(cmp->cm_test);
223 src = EXTRACT_LE_16BITS(cmp->cm_test.te_src);
224 other = EXTRACT_LE_8BITS(cmp->cm_test.te_data);
225 printf("src %s data %o", dnaddr_string(src), other);
226 ret = 1;
227 break;
228 case RMF_L1ROUT:
229 printf("lev-1-routing ");
230 if (length < sizeof(struct l1rout))
231 goto trunc;
232 TCHECK(cmp->cm_l1rou);
233 src = EXTRACT_LE_16BITS(cmp->cm_l1rou.r1_src);
234 printf("src %s ", dnaddr_string(src));
235 ret = print_l1_routes(&(rhpx[sizeof(struct l1rout)]),
236 length - sizeof(struct l1rout));
237 break;
238 case RMF_L2ROUT:
239 printf("lev-2-routing ");
240 if (length < sizeof(struct l2rout))
241 goto trunc;
242 TCHECK(cmp->cm_l2rout);
243 src = EXTRACT_LE_16BITS(cmp->cm_l2rout.r2_src);
244 printf("src %s ", dnaddr_string(src));
245 ret = print_l2_routes(&(rhpx[sizeof(struct l2rout)]),
246 length - sizeof(struct l2rout));
247 break;
248 case RMF_RHELLO:
249 printf("router-hello ");
250 if (length < sizeof(struct rhellomsg))
251 goto trunc;
252 TCHECK(cmp->cm_rhello);
253 vers = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_vers);
254 eco = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_eco);
255 ueco = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_ueco);
256 memcpy((char *)&srcea, (char *)&(cmp->cm_rhello.rh_src),
257 sizeof(srcea));
258 src = EXTRACT_LE_16BITS(srcea.dne_remote.dne_nodeaddr);
259 info = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_info);
260 blksize = EXTRACT_LE_16BITS(cmp->cm_rhello.rh_blksize);
261 priority = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_priority);
262 hello = EXTRACT_LE_16BITS(cmp->cm_rhello.rh_hello);
263 print_i_info(info);
264 printf("vers %d eco %d ueco %d src %s blksize %d pri %d hello %d",
265 vers, eco, ueco, dnaddr_string(src), blksize, priority, hello);
266 ret = print_elist(&(rhpx[sizeof(struct rhellomsg)]),
267 length - sizeof(struct rhellomsg));
268 break;
269 case RMF_EHELLO:
270 printf("endnode-hello ");
271 if (length < sizeof(struct ehellomsg))
272 goto trunc;
273 TCHECK(cmp->cm_ehello);
274 vers = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_vers);
275 eco = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_eco);
276 ueco = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_ueco);
277 memcpy((char *)&srcea, (char *)&(cmp->cm_ehello.eh_src),
278 sizeof(srcea));
279 src = EXTRACT_LE_16BITS(srcea.dne_remote.dne_nodeaddr);
280 info = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_info);
281 blksize = EXTRACT_LE_16BITS(cmp->cm_ehello.eh_blksize);
282 /*seed*/
283 memcpy((char *)&rtea, (char *)&(cmp->cm_ehello.eh_router),
284 sizeof(rtea));
285 dst = EXTRACT_LE_16BITS(rtea.dne_remote.dne_nodeaddr);
286 hello = EXTRACT_LE_16BITS(cmp->cm_ehello.eh_hello);
287 other = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_data);
288 print_i_info(info);
289 printf(
290 "vers %d eco %d ueco %d src %s blksize %d rtr %s hello %d data %o",
291 vers, eco, ueco, dnaddr_string(src),
292 blksize, dnaddr_string(dst), hello, other);
293 ret = 1;
294 break;
295
296 default:
297 printf("unknown control message");
298 default_print((u_char *)rhp, min(length, caplen));
299 ret = 1;
300 break;
301 }
302 return (ret);
303
304 trunc:
305 return (0);
306 }
307
308 static void
print_t_info(int info)309 print_t_info(int info)
310 {
311 int ntype = info & 3;
312 switch (ntype) {
313 case 0: printf("reserved-ntype? "); break;
314 case TI_L2ROUT: printf("l2rout "); break;
315 case TI_L1ROUT: printf("l1rout "); break;
316 case TI_ENDNODE: printf("endnode "); break;
317 }
318 if (info & TI_VERIF)
319 printf("verif ");
320 if (info & TI_BLOCK)
321 printf("blo ");
322 }
323
324 static int
print_l1_routes(const char * rp,u_int len)325 print_l1_routes(const char *rp, u_int len)
326 {
327 int count;
328 int id;
329 int info;
330
331 /* The last short is a checksum */
332 while (len > (3 * sizeof(short))) {
333 TCHECK2(*rp, 3 * sizeof(short));
334 count = EXTRACT_LE_16BITS(rp);
335 if (count > 1024)
336 return (1); /* seems to be bogus from here on */
337 rp += sizeof(short);
338 len -= sizeof(short);
339 id = EXTRACT_LE_16BITS(rp);
340 rp += sizeof(short);
341 len -= sizeof(short);
342 info = EXTRACT_LE_16BITS(rp);
343 rp += sizeof(short);
344 len -= sizeof(short);
345 printf("{ids %d-%d cost %d hops %d} ", id, id + count,
346 RI_COST(info), RI_HOPS(info));
347 }
348 return (1);
349
350 trunc:
351 return (0);
352 }
353
354 static int
print_l2_routes(const char * rp,u_int len)355 print_l2_routes(const char *rp, u_int len)
356 {
357 int count;
358 int area;
359 int info;
360
361 /* The last short is a checksum */
362 while (len > (3 * sizeof(short))) {
363 TCHECK2(*rp, 3 * sizeof(short));
364 count = EXTRACT_LE_16BITS(rp);
365 if (count > 1024)
366 return (1); /* seems to be bogus from here on */
367 rp += sizeof(short);
368 len -= sizeof(short);
369 area = EXTRACT_LE_16BITS(rp);
370 rp += sizeof(short);
371 len -= sizeof(short);
372 info = EXTRACT_LE_16BITS(rp);
373 rp += sizeof(short);
374 len -= sizeof(short);
375 printf("{areas %d-%d cost %d hops %d} ", area, area + count,
376 RI_COST(info), RI_HOPS(info));
377 }
378 return (1);
379
380 trunc:
381 return (0);
382 }
383
384 static void
print_i_info(int info)385 print_i_info(int info)
386 {
387 int ntype = info & II_TYPEMASK;
388 switch (ntype) {
389 case 0: printf("reserved-ntype? "); break;
390 case II_L2ROUT: printf("l2rout "); break;
391 case II_L1ROUT: printf("l1rout "); break;
392 case II_ENDNODE: printf("endnode "); break;
393 }
394 if (info & II_VERIF)
395 printf("verif ");
396 if (info & II_NOMCAST)
397 printf("nomcast ");
398 if (info & II_BLOCK)
399 printf("blo ");
400 }
401
402 static int
print_elist(const char * elp,u_int len)403 print_elist(const char *elp, u_int len)
404 {
405 /* Not enough examples available for me to debug this */
406 return (1);
407 }
408
409 static int
print_nsp(const u_char * nspp,u_int nsplen)410 print_nsp(const u_char *nspp, u_int nsplen)
411 {
412 const struct nsphdr *nsphp = (struct nsphdr *)nspp;
413 int dst, src, flags;
414
415 if (nsplen < sizeof(struct nsphdr))
416 goto trunc;
417 TCHECK(*nsphp);
418 flags = EXTRACT_LE_8BITS(nsphp->nh_flags);
419 dst = EXTRACT_LE_16BITS(nsphp->nh_dst);
420 src = EXTRACT_LE_16BITS(nsphp->nh_src);
421
422 switch (flags & NSP_TYPEMASK) {
423 case MFT_DATA:
424 switch (flags & NSP_SUBMASK) {
425 case MFS_BOM:
426 case MFS_MOM:
427 case MFS_EOM:
428 case MFS_BOM+MFS_EOM:
429 printf("data %d>%d ", src, dst);
430 {
431 struct seghdr *shp = (struct seghdr *)nspp;
432 int ack;
433 #ifdef PRINT_NSPDATA
434 u_char *dp;
435 #endif
436 u_int data_off = sizeof(struct minseghdr);
437
438 if (nsplen < data_off)
439 goto trunc;
440 TCHECK(shp->sh_seq[0]);
441 ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
442 if (ack & SGQ_ACK) { /* acknum field */
443 if ((ack & SGQ_NAK) == SGQ_NAK)
444 printf("nak %d ", ack & SGQ_MASK);
445 else
446 printf("ack %d ", ack & SGQ_MASK);
447 data_off += sizeof(short);
448 if (nsplen < data_off)
449 goto trunc;
450 TCHECK(shp->sh_seq[1]);
451 ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
452 if (ack & SGQ_OACK) { /* ackoth field */
453 if ((ack & SGQ_ONAK) == SGQ_ONAK)
454 printf("onak %d ", ack & SGQ_MASK);
455 else
456 printf("oack %d ", ack & SGQ_MASK);
457 data_off += sizeof(short);
458 if (nsplen < data_off)
459 goto trunc;
460 TCHECK(shp->sh_seq[2]);
461 ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
462 }
463 }
464 printf("seg %d ", ack & SGQ_MASK);
465 #ifdef PRINT_NSPDATA
466 if (nsplen > data_off) {
467 dp = &(nspp[data_off]);
468 TCHECK2(*dp, nsplen - data_off);
469 pdata(dp, nsplen - data_off);
470 }
471 #endif
472 }
473 break;
474 case MFS_ILS+MFS_INT:
475 printf("intr ");
476 {
477 struct seghdr *shp = (struct seghdr *)nspp;
478 int ack;
479 #ifdef PRINT_NSPDATA
480 u_char *dp;
481 #endif
482 u_int data_off = sizeof(struct minseghdr);
483
484 if (nsplen < data_off)
485 goto trunc;
486 TCHECK(shp->sh_seq[0]);
487 ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
488 if (ack & SGQ_ACK) { /* acknum field */
489 if ((ack & SGQ_NAK) == SGQ_NAK)
490 printf("nak %d ", ack & SGQ_MASK);
491 else
492 printf("ack %d ", ack & SGQ_MASK);
493 data_off += sizeof(short);
494 if (nsplen < data_off)
495 goto trunc;
496 TCHECK(shp->sh_seq[1]);
497 ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
498 if (ack & SGQ_OACK) { /* ackdat field */
499 if ((ack & SGQ_ONAK) == SGQ_ONAK)
500 printf("nakdat %d ", ack & SGQ_MASK);
501 else
502 printf("ackdat %d ", ack & SGQ_MASK);
503 data_off += sizeof(short);
504 if (nsplen < data_off)
505 goto trunc;
506 TCHECK(shp->sh_seq[2]);
507 ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
508 }
509 }
510 printf("seg %d ", ack & SGQ_MASK);
511 #ifdef PRINT_NSPDATA
512 if (nsplen > data_off) {
513 dp = &(nspp[data_off]);
514 TCHECK2(*dp, nsplen - data_off);
515 pdata(dp, nsplen - data_off);
516 }
517 #endif
518 }
519 break;
520 case MFS_ILS:
521 printf("link-service %d>%d ", src, dst);
522 {
523 struct seghdr *shp = (struct seghdr *)nspp;
524 struct lsmsg *lsmp =
525 (struct lsmsg *)&(nspp[sizeof(struct seghdr)]);
526 int ack;
527 int lsflags, fcval;
528
529 if (nsplen < sizeof(struct seghdr) + sizeof(struct lsmsg))
530 goto trunc;
531 TCHECK(shp->sh_seq[0]);
532 ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
533 if (ack & SGQ_ACK) { /* acknum field */
534 if ((ack & SGQ_NAK) == SGQ_NAK)
535 printf("nak %d ", ack & SGQ_MASK);
536 else
537 printf("ack %d ", ack & SGQ_MASK);
538 TCHECK(shp->sh_seq[1]);
539 ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
540 if (ack & SGQ_OACK) { /* ackdat field */
541 if ((ack & SGQ_ONAK) == SGQ_ONAK)
542 printf("nakdat %d ", ack & SGQ_MASK);
543 else
544 printf("ackdat %d ", ack & SGQ_MASK);
545 TCHECK(shp->sh_seq[2]);
546 ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
547 }
548 }
549 printf("seg %d ", ack & SGQ_MASK);
550 TCHECK(*lsmp);
551 lsflags = EXTRACT_LE_8BITS(lsmp->ls_lsflags);
552 fcval = EXTRACT_LE_8BITS(lsmp->ls_fcval);
553 switch (lsflags & LSI_MASK) {
554 case LSI_DATA:
555 printf("dat seg count %d ", fcval);
556 switch (lsflags & LSM_MASK) {
557 case LSM_NOCHANGE:
558 break;
559 case LSM_DONOTSEND:
560 printf("donotsend-data ");
561 break;
562 case LSM_SEND:
563 printf("send-data ");
564 break;
565 default:
566 printf("reserved-fcmod? %x", lsflags);
567 break;
568 }
569 break;
570 case LSI_INTR:
571 printf("intr req count %d ", fcval);
572 break;
573 default:
574 printf("reserved-fcval-int? %x", lsflags);
575 break;
576 }
577 }
578 break;
579 default:
580 printf("reserved-subtype? %x %d > %d", flags, src, dst);
581 break;
582 }
583 break;
584 case MFT_ACK:
585 switch (flags & NSP_SUBMASK) {
586 case MFS_DACK:
587 printf("data-ack %d>%d ", src, dst);
588 {
589 struct ackmsg *amp = (struct ackmsg *)nspp;
590 int ack;
591
592 if (nsplen < sizeof(struct ackmsg))
593 goto trunc;
594 TCHECK(*amp);
595 ack = EXTRACT_LE_16BITS(amp->ak_acknum[0]);
596 if (ack & SGQ_ACK) { /* acknum field */
597 if ((ack & SGQ_NAK) == SGQ_NAK)
598 printf("nak %d ", ack & SGQ_MASK);
599 else
600 printf("ack %d ", ack & SGQ_MASK);
601 ack = EXTRACT_LE_16BITS(amp->ak_acknum[1]);
602 if (ack & SGQ_OACK) { /* ackoth field */
603 if ((ack & SGQ_ONAK) == SGQ_ONAK)
604 printf("onak %d ", ack & SGQ_MASK);
605 else
606 printf("oack %d ", ack & SGQ_MASK);
607 }
608 }
609 }
610 break;
611 case MFS_IACK:
612 printf("ils-ack %d>%d ", src, dst);
613 {
614 struct ackmsg *amp = (struct ackmsg *)nspp;
615 int ack;
616
617 if (nsplen < sizeof(struct ackmsg))
618 goto trunc;
619 TCHECK(*amp);
620 ack = EXTRACT_LE_16BITS(amp->ak_acknum[0]);
621 if (ack & SGQ_ACK) { /* acknum field */
622 if ((ack & SGQ_NAK) == SGQ_NAK)
623 printf("nak %d ", ack & SGQ_MASK);
624 else
625 printf("ack %d ", ack & SGQ_MASK);
626 TCHECK(amp->ak_acknum[1]);
627 ack = EXTRACT_LE_16BITS(amp->ak_acknum[1]);
628 if (ack & SGQ_OACK) { /* ackdat field */
629 if ((ack & SGQ_ONAK) == SGQ_ONAK)
630 printf("nakdat %d ", ack & SGQ_MASK);
631 else
632 printf("ackdat %d ", ack & SGQ_MASK);
633 }
634 }
635 }
636 break;
637 case MFS_CACK:
638 printf("conn-ack %d", dst);
639 break;
640 default:
641 printf("reserved-acktype? %x %d > %d", flags, src, dst);
642 break;
643 }
644 break;
645 case MFT_CTL:
646 switch (flags & NSP_SUBMASK) {
647 case MFS_CI:
648 case MFS_RCI:
649 if ((flags & NSP_SUBMASK) == MFS_CI)
650 printf("conn-initiate ");
651 else
652 printf("retrans-conn-initiate ");
653 printf("%d>%d ", src, dst);
654 {
655 struct cimsg *cimp = (struct cimsg *)nspp;
656 int services, info, segsize;
657 #ifdef PRINT_NSPDATA
658 u_char *dp;
659 #endif
660
661 if (nsplen < sizeof(struct cimsg))
662 goto trunc;
663 TCHECK(*cimp);
664 services = EXTRACT_LE_8BITS(cimp->ci_services);
665 info = EXTRACT_LE_8BITS(cimp->ci_info);
666 segsize = EXTRACT_LE_16BITS(cimp->ci_segsize);
667
668 switch (services & COS_MASK) {
669 case COS_NONE:
670 break;
671 case COS_SEGMENT:
672 printf("seg ");
673 break;
674 case COS_MESSAGE:
675 printf("msg ");
676 break;
677 case COS_CRYPTSER:
678 printf("crypt ");
679 break;
680 }
681 switch (info & COI_MASK) {
682 case COI_32:
683 printf("ver 3.2 ");
684 break;
685 case COI_31:
686 printf("ver 3.1 ");
687 break;
688 case COI_40:
689 printf("ver 4.0 ");
690 break;
691 case COI_41:
692 printf("ver 4.1 ");
693 break;
694 }
695 printf("segsize %d ", segsize);
696 #ifdef PRINT_NSPDATA
697 if (nsplen > sizeof(struct cimsg)) {
698 dp = &(nspp[sizeof(struct cimsg)]);
699 TCHECK2(*dp, nsplen - sizeof(struct cimsg));
700 pdata(dp, nsplen - sizeof(struct cimsg));
701 }
702 #endif
703 }
704 break;
705 case MFS_CC:
706 printf("conn-confirm %d>%d ", src, dst);
707 {
708 struct ccmsg *ccmp = (struct ccmsg *)nspp;
709 int services, info;
710 u_int segsize, optlen;
711 #ifdef PRINT_NSPDATA
712 u_char *dp;
713 #endif
714
715 if (nsplen < sizeof(struct ccmsg))
716 goto trunc;
717 TCHECK(*ccmp);
718 services = EXTRACT_LE_8BITS(ccmp->cc_services);
719 info = EXTRACT_LE_8BITS(ccmp->cc_info);
720 segsize = EXTRACT_LE_16BITS(ccmp->cc_segsize);
721 optlen = EXTRACT_LE_8BITS(ccmp->cc_optlen);
722
723 switch (services & COS_MASK) {
724 case COS_NONE:
725 break;
726 case COS_SEGMENT:
727 printf("seg ");
728 break;
729 case COS_MESSAGE:
730 printf("msg ");
731 break;
732 case COS_CRYPTSER:
733 printf("crypt ");
734 break;
735 }
736 switch (info & COI_MASK) {
737 case COI_32:
738 printf("ver 3.2 ");
739 break;
740 case COI_31:
741 printf("ver 3.1 ");
742 break;
743 case COI_40:
744 printf("ver 4.0 ");
745 break;
746 case COI_41:
747 printf("ver 4.1 ");
748 break;
749 }
750 printf("segsize %d ", segsize);
751 if (optlen) {
752 printf("optlen %d ", optlen);
753 #ifdef PRINT_NSPDATA
754 if (optlen > nsplen - sizeof(struct ccmsg))
755 goto trunc;
756 dp = &(nspp[sizeof(struct ccmsg)]);
757 TCHECK2(*dp, optlen);
758 pdata(dp, optlen);
759 #endif
760 }
761 }
762 break;
763 case MFS_DI:
764 printf("disconn-initiate %d>%d ", src, dst);
765 {
766 struct dimsg *dimp = (struct dimsg *)nspp;
767 int reason;
768 u_int optlen;
769 #ifdef PRINT_NSPDATA
770 u_char *dp;
771 #endif
772
773 if (nsplen < sizeof(struct dimsg))
774 goto trunc;
775 TCHECK(*dimp);
776 reason = EXTRACT_LE_16BITS(dimp->di_reason);
777 optlen = EXTRACT_LE_8BITS(dimp->di_optlen);
778
779 print_reason(reason);
780 if (optlen) {
781 printf("optlen %d ", optlen);
782 #ifdef PRINT_NSPDATA
783 if (optlen > nsplen - sizeof(struct dimsg))
784 goto trunc;
785 dp = &(nspp[sizeof(struct dimsg)]);
786 TCHECK2(*dp, optlen);
787 pdata(dp, optlen);
788 #endif
789 }
790 }
791 break;
792 case MFS_DC:
793 printf("disconn-confirm %d>%d ", src, dst);
794 {
795 struct dcmsg *dcmp = (struct dcmsg *)nspp;
796 int reason;
797
798 TCHECK(*dcmp);
799 reason = EXTRACT_LE_16BITS(dcmp->dc_reason);
800
801 print_reason(reason);
802 }
803 break;
804 default:
805 printf("reserved-ctltype? %x %d > %d", flags, src, dst);
806 break;
807 }
808 break;
809 default:
810 printf("reserved-type? %x %d > %d", flags, src, dst);
811 break;
812 }
813 return (1);
814
815 trunc:
816 return (0);
817 }
818
819 static struct tok reason2str[] = {
820 { UC_OBJREJECT, "object rejected connect" },
821 { UC_RESOURCES, "insufficient resources" },
822 { UC_NOSUCHNODE, "unrecognized node name" },
823 { DI_SHUT, "node is shutting down" },
824 { UC_NOSUCHOBJ, "unrecognized object" },
825 { UC_INVOBJFORMAT, "invalid object name format" },
826 { UC_OBJTOOBUSY, "object too busy" },
827 { DI_PROTOCOL, "protocol error discovered" },
828 { DI_TPA, "third party abort" },
829 { UC_USERABORT, "user abort" },
830 { UC_INVNODEFORMAT, "invalid node name format" },
831 { UC_LOCALSHUT, "local node shutting down" },
832 { DI_LOCALRESRC, "insufficient local resources" },
833 { DI_REMUSERRESRC, "insufficient remote user resources" },
834 { UC_ACCESSREJECT, "invalid access control information" },
835 { DI_BADACCNT, "bad ACCOUNT information" },
836 { UC_NORESPONSE, "no response from object" },
837 { UC_UNREACHABLE, "node unreachable" },
838 { DC_NOLINK, "no link terminate" },
839 { DC_COMPLETE, "disconnect complete" },
840 { DI_BADIMAGE, "bad image data in connect" },
841 { DI_SERVMISMATCH, "cryptographic service mismatch" },
842 { 0, NULL }
843 };
844
845 static void
print_reason(int reason)846 print_reason(int reason)
847 {
848 printf("%s ", tok2str(reason2str, "reason-%d", reason));
849 }
850
851 char *
dnnum_string(u_short dnaddr)852 dnnum_string(u_short dnaddr)
853 {
854 char *str;
855 int area = (u_short)(dnaddr & AREAMASK) >> AREASHIFT;
856 int node = dnaddr & NODEMASK;
857 int len = sizeof("00.0000");
858
859 str = malloc(len);
860 if (str == NULL)
861 error("dnnum_string: malloc");
862 snprintf(str, len, "%d.%d", area, node);
863 return(str);
864 }
865
866 char *
dnname_string(u_short dnaddr)867 dnname_string(u_short dnaddr)
868 {
869 #ifdef HAVE_LIBDNET
870 struct dn_naddr dna;
871
872 dna.a_len = sizeof(short);
873 memcpy((char *)dna.a_addr, (char *)&dnaddr, sizeof(short));
874 return (savestr(dnet_htoa(&dna)));
875 #else
876 return(dnnum_string(dnaddr)); /* punt */
877 #endif
878 }
879
880 #ifdef PRINT_NSPDATA
881 static void
pdata(u_char * dp,u_int maxlen)882 pdata(u_char *dp, u_int maxlen)
883 {
884 int c;
885 u_int x = maxlen;
886
887 while (x-- > 0) {
888 c = (unsigned char)*dp++;
889 if (isprint(c))
890 putchar(c);
891 else
892 printf("\\%o", c & 0xFF);
893 }
894 }
895 #endif
896