xref: /dragonfly/contrib/tcpdump/print-forces.c (revision ed775ee7)
1 /*
2  * Redistribution and use in source and binary forms, with or without
3  * modification, are permitted provided that: (1) source code
4  * distributions retain the above copyright notice and this paragraph
5  * in its entirety, and (2) distributions including binary code include
6  * the above copyright notice and this paragraph in its entirety in
7  * the documentation or other materials provided with the distribution.
8  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
9  * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
10  * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
11  * FOR A PARTICULAR PURPOSE.
12  *
13  * Copyright (c) 2009 Mojatatu Networks, Inc
14  *
15  */
16 
17 /* \summary: Forwarding and Control Element Separation (ForCES) Protocol printer */
18 
19 /* specification: RFC 5810 */
20 
21 #ifdef HAVE_CONFIG_H
22 #include <config.h>
23 #endif
24 
25 #include "netdissect-stdinc.h"
26 
27 #include "netdissect.h"
28 #include "extract.h"
29 
30 
31 #define	ForCES_VERS	1
32 #define	ForCES_HDRL	24
33 #define	ForCES_ALNL	4U
34 #define TLV_HDRL	4
35 #define ILV_HDRL	8
36 
37 #define TOM_RSVD 	0x0
38 #define TOM_ASSNSETUP 	0x1
39 #define TOM_ASSNTEARD 	0x2
40 #define TOM_CONFIG 	0x3
41 #define TOM_QUERY 	0x4
42 #define TOM_EVENTNOT 	0x5
43 #define TOM_PKTREDIR 	0x6
44 #define TOM_HEARTBT 	0x0F
45 #define TOM_ASSNSETREP 	0x11
46 #define TOM_CONFIGREP 	0x13
47 #define TOM_QUERYREP 	0x14
48 
49 /*
50  * tom_h Flags: resv1(8b):maxtlvs(4b):resv2(2b):mintlv(2b)
51 */
52 #define ZERO_TTLV	0x01
53 #define ZERO_MORE_TTLV	0x02
54 #define ONE_MORE_TTLV	0x04
55 #define ZERO_TLV	0x00
56 #define ONE_TLV		0x10
57 #define TWO_TLV		0x20
58 #define MAX_TLV		0xF0
59 
60 #define TTLV_T1		(ONE_MORE_TTLV|ONE_TLV)
61 #define TTLV_T2		(ONE_MORE_TTLV|MAX_TLV)
62 
63 struct tom_h {
64 	uint32_t v;
65 	uint16_t flags;
66 	uint16_t op_msk;
67 	const char *s;
68 	int (*print) (netdissect_options *ndo, const u_char * pptr, u_int len,
69 		      uint16_t op_msk, int indent);
70 };
71 
72 enum {
73 	TOM_RSV_I,
74 	TOM_ASS_I,
75 	TOM_AST_I,
76 	TOM_CFG_I,
77 	TOM_QRY_I,
78 	TOM_EVN_I,
79 	TOM_RED_I,
80 	TOM_HBT_I,
81 	TOM_ASR_I,
82 	TOM_CNR_I,
83 	TOM_QRR_I,
84 	_TOM_RSV_MAX
85 };
86 #define TOM_MAX_IND (_TOM_RSV_MAX - 1)
87 
88 static int
tom_valid(uint8_t tom)89 tom_valid(uint8_t tom)
90 {
91 	if (tom > 0) {
92 		if (tom >= 0x7 && tom <= 0xe)
93 			return 0;
94 		if (tom == 0x10)
95 			return 0;
96 		if (tom > 0x14)
97 			return 0;
98 		return 1;
99 	} else
100 		return 0;
101 }
102 
103 static const char *
ForCES_node(uint32_t node)104 ForCES_node(uint32_t node)
105 {
106 	if (node <= 0x3FFFFFFF)
107 		return "FE";
108 	if (node >= 0x40000000 && node <= 0x7FFFFFFF)
109 		return "CE";
110 	if (node >= 0xC0000000 && node <= 0xFFFFFFEF)
111 		return "AllMulticast";
112 	if (node == 0xFFFFFFFD)
113 		return "AllCEsBroadcast";
114 	if (node == 0xFFFFFFFE)
115 		return "AllFEsBroadcast";
116 	if (node == 0xFFFFFFFF)
117 		return "AllBroadcast";
118 
119 	return "ForCESreserved";
120 
121 }
122 
123 static const struct tok ForCES_ACKs[] = {
124 	{0x0, "NoACK"},
125 	{0x1, "SuccessACK"},
126 	{0x2, "FailureACK"},
127 	{0x3, "AlwaysACK"},
128 	{0, NULL}
129 };
130 
131 static const struct tok ForCES_EMs[] = {
132 	{0x0, "EMReserved"},
133 	{0x1, "execute-all-or-none"},
134 	{0x2, "execute-until-failure"},
135 	{0x3, "continue-execute-on-failure"},
136 	{0, NULL}
137 };
138 
139 static const struct tok ForCES_ATs[] = {
140 	{0x0, "Standalone"},
141 	{0x1, "2PCtransaction"},
142 	{0, NULL}
143 };
144 
145 static const struct tok ForCES_TPs[] = {
146 	{0x0, "StartofTransaction"},
147 	{0x1, "MiddleofTransaction"},
148 	{0x2, "EndofTransaction"},
149 	{0x3, "abort"},
150 	{0, NULL}
151 };
152 
153 /*
154  * Structure of forces header, naked of TLVs.
155  */
156 struct forcesh {
157 	nd_uint8_t fm_vrsvd;	/* version and reserved */
158 #define ForCES_V(forcesh)	(GET_U_1((forcesh)->fm_vrsvd) >> 4)
159 	nd_uint8_t fm_tom;	/* type of message */
160 	nd_uint16_t fm_len;	/* total length * 4 bytes */
161 #define ForCES_BLN(forcesh)	((uint32_t)(GET_BE_U_2((forcesh)->fm_len) << 2))
162 	nd_uint32_t fm_sid;	/* Source ID */
163 #define ForCES_SID(forcesh)	GET_BE_U_4((forcesh)->fm_sid)
164 	nd_uint32_t fm_did;	/* Destination ID */
165 #define ForCES_DID(forcesh)	GET_BE_U_4((forcesh)->fm_did)
166 	nd_uint8_t fm_cor[8];	/* correlator */
167 	nd_uint32_t fm_flags;	/* flags */
168 #define ForCES_ACK(forcesh)	((GET_BE_U_4((forcesh)->fm_flags)&0xC0000000) >> 30)
169 #define ForCES_PRI(forcesh)	((GET_BE_U_4((forcesh)->fm_flags)&0x38000000) >> 27)
170 #define ForCES_RS1(forcesh)	((GET_BE_U_4((forcesh)->fm_flags)&0x07000000) >> 24)
171 #define ForCES_EM(forcesh)	((GET_BE_U_4((forcesh)->fm_flags)&0x00C00000) >> 22)
172 #define ForCES_AT(forcesh)	((GET_BE_U_4((forcesh)->fm_flags)&0x00200000) >> 21)
173 #define ForCES_TP(forcesh)	((GET_BE_U_4((forcesh)->fm_flags)&0x00180000) >> 19)
174 #define ForCES_RS2(forcesh)	((GET_BE_U_4((forcesh)->fm_flags)&0x0007FFFF) >> 0)
175 };
176 
177 #define ForCES_HLN_VALID(fhl,tlen) ((tlen) >= ForCES_HDRL && \
178 				   (fhl) >= ForCES_HDRL && \
179 				   (fhl) == (tlen))
180 
181 #define F_LFB_RSVD 0x0
182 #define F_LFB_FEO 0x1
183 #define F_LFB_FEPO 0x2
184 static const struct tok ForCES_LFBs[] = {
185 	{F_LFB_RSVD, "Invalid TLV"},
186 	{F_LFB_FEO, "FEObj LFB"},
187 	{F_LFB_FEPO, "FEProtoObj LFB"},
188 	{0, NULL}
189 };
190 
191 /* this is defined in RFC5810 section A.2 */
192 /*   https://www.iana.org/assignments/forces/forces.xhtml#oper-tlv-types */
193 enum {
194 	F_OP_RSV        = 0,
195 	F_OP_SET        = 1,
196 	F_OP_SETPROP    = 2,
197 	F_OP_SETRESP    = 3,
198 	F_OP_SETPRESP   = 4,
199 	F_OP_DEL        = 5,
200 	F_OP_DELRESP    = 6,
201 	F_OP_GET        = 7,
202 	F_OP_GETPROP    = 8,
203 	F_OP_GETRESP    = 9,
204 	F_OP_GETPRESP   = 10,
205 	F_OP_REPORT     = 11,
206 	F_OP_COMMIT     = 12,
207 	F_OP_RCOMMIT    = 13,
208 	F_OP_RTRCOMP    = 14,
209 	_F_OP_MAX
210 };
211 #define F_OP_MAX	(_F_OP_MAX - 1)
212 
213 enum {
214 	B_OP_SET = 1 << (F_OP_SET - 1),
215 	B_OP_SETPROP = 1 << (F_OP_SETPROP - 1),
216 	B_OP_SETRESP = 1 << (F_OP_SETRESP - 1),
217 	B_OP_SETPRESP = 1 << (F_OP_SETPRESP - 1),
218 	B_OP_DEL = 1 << (F_OP_DEL - 1),
219 	B_OP_DELRESP = 1 << (F_OP_DELRESP - 1),
220 	B_OP_GET = 1 << (F_OP_GET - 1),
221 	B_OP_GETPROP = 1 << (F_OP_GETPROP - 1),
222 	B_OP_GETRESP = 1 << (F_OP_GETRESP - 1),
223 	B_OP_GETPRESP = 1 << (F_OP_GETPRESP - 1),
224 	B_OP_REPORT = 1 << (F_OP_REPORT - 1),
225 	B_OP_COMMIT = 1 << (F_OP_COMMIT - 1),
226 	B_OP_RCOMMIT = 1 << (F_OP_RCOMMIT - 1),
227 	B_OP_RTRCOMP = 1 << (F_OP_RTRCOMP - 1)
228 };
229 
230 struct optlv_h {
231 	uint16_t flags;
232 	uint16_t op_msk;
233 	const char *s;
234 	int (*print) (netdissect_options *ndo, const u_char * pptr, u_int len,
235 		      uint16_t op_msk, int indent);
236 };
237 
238 static int genoptlv_print(netdissect_options *, const u_char * pptr, u_int len,
239 			 uint16_t op_msk, int indent);
240 static int recpdoptlv_print(netdissect_options *, const u_char * pptr, u_int len,
241 			    uint16_t op_msk, int indent);
242 static int invoptlv_print(netdissect_options *, const u_char * pptr, u_int len,
243 			  uint16_t op_msk, int indent);
244 
245 #define OP_MIN_SIZ 8
246 struct pathdata_h {
247 	nd_uint16_t pflags;
248 	nd_uint16_t pIDcnt;
249 };
250 
251 #define	B_FULLD		0x1
252 #define	B_SPARD 	0x2
253 #define B_RESTV		0x4
254 #define B_KEYIN		0x8
255 #define B_APPND		0x10
256 #define B_TRNG		0x20
257 
258 static const struct optlv_h OPTLV_msg[F_OP_MAX + 1] = {
259 	/* F_OP_RSV */ {ZERO_TTLV, 0, "Invalid OPTLV", invoptlv_print},
260 	/* F_OP_SET */ {TTLV_T2, B_FULLD | B_SPARD, " Set", recpdoptlv_print},
261 	/* F_OP_SETPROP */
262 	    {TTLV_T2, B_FULLD | B_SPARD, " SetProp", recpdoptlv_print},
263 	/* F_OP_SETRESP */ {TTLV_T2, B_RESTV, " SetResp", recpdoptlv_print},
264 	/* F_OP_SETPRESP */ {TTLV_T2, B_RESTV, " SetPropResp", recpdoptlv_print},
265 	/* F_OP_DEL */ {ZERO_TTLV, 0, " Del", recpdoptlv_print},
266 	/* F_OP_DELRESP */ {TTLV_T2, B_RESTV, " DelResp", recpdoptlv_print},
267 	/* F_OP_GET */ {ZERO_TTLV, 0, " Get", recpdoptlv_print},
268 	/* F_OP_GETPROP */ {ZERO_TTLV, 0, " GetProp", recpdoptlv_print},
269 	/* F_OP_GETRESP */
270 	    {TTLV_T2, B_FULLD | B_SPARD | B_RESTV, " GetResp", recpdoptlv_print},
271 	/* F_OP_GETPRESP */
272 	    {TTLV_T2, B_FULLD | B_RESTV, " GetPropResp", recpdoptlv_print},
273 	/* F_OP_REPORT */
274 	    {TTLV_T2, B_FULLD | B_SPARD, " Report", recpdoptlv_print},
275 	/* F_OP_COMMIT */ {ZERO_TTLV, 0, " Commit", NULL},
276 	/* F_OP_RCOMMIT */ {TTLV_T1, B_RESTV, " RCommit", genoptlv_print},
277 	/* F_OP_RTRCOMP */ {ZERO_TTLV, 0, " RTRCOMP", NULL},
278 };
279 
280 static const struct optlv_h *
get_forces_optlv_h(uint16_t opt)281 get_forces_optlv_h(uint16_t opt)
282 {
283 	if (opt > F_OP_MAX || opt == F_OP_RSV)
284 		return &OPTLV_msg[F_OP_RSV];
285 
286 	return &OPTLV_msg[opt];
287 }
288 
289 #define IND_SIZE 256
290 #define IND_CHR ' '
291 #define IND_PREF '\n'
292 #define IND_SUF 0x0
293 static char ind_buf[IND_SIZE];
294 
295 static char *
indent_pr(int indent,int nlpref)296 indent_pr(int indent, int nlpref)
297 {
298 	int i = 0;
299 	char *r = ind_buf;
300 
301 	if (indent > (IND_SIZE - 1))
302 		indent = IND_SIZE - 1;
303 
304 	if (nlpref) {
305 		r[i] = IND_PREF;
306 		i++;
307 		indent--;
308 	}
309 
310 	while (--indent >= 0)
311 		r[i++] = IND_CHR;
312 
313 	r[i] = IND_SUF;
314 	return r;
315 }
316 
317 static int
op_valid(uint16_t op,uint16_t mask)318 op_valid(uint16_t op, uint16_t mask)
319 {
320 	if (op == 0)
321 		return 0;
322 	if (op <= F_OP_MAX)
323 		return (1 << (op - 1)) & mask; /* works only for 0x0001 through 0x0010 */
324 	/* I guess we should allow vendor operations? */
325 	if (op >= 0x8000)
326 		return 1;
327 	return 0;
328 }
329 
330 #define F_TLV_RSVD	0x0000
331 #define F_TLV_REDR	0x0001
332 #define F_TLV_ASRS	0x0010
333 #define F_TLV_ASRT	0x0011
334 #define F_TLV_LFBS	0x1000
335 #define F_TLV_PDAT	0x0110
336 #define F_TLV_KEYI	0x0111
337 #define F_TLV_FULD	0x0112
338 #define F_TLV_SPAD	0x0113
339 #define F_TLV_REST	0x0114
340 #define F_TLV_METD	0x0115
341 #define F_TLV_REDD	0x0116
342 #define F_TLV_TRNG	0x0117
343 
344 
345 #define F_TLV_VNST	0x8000
346 
347 static const struct tok ForCES_TLV[] = {
348 	{F_TLV_RSVD, "Invalid TLV"},
349 	{F_TLV_REDR, "REDIRECT TLV"},
350 	{F_TLV_ASRS, "ASResult TLV"},
351 	{F_TLV_ASRT, "ASTreason TLV"},
352 	{F_TLV_LFBS, "LFBselect TLV"},
353 	{F_TLV_PDAT, "PATH-DATA TLV"},
354 	{F_TLV_KEYI, "KEYINFO TLV"},
355 	{F_TLV_FULD, "FULLDATA TLV"},
356 	{F_TLV_SPAD, "SPARSEDATA TLV"},
357 	{F_TLV_REST, "RESULT TLV"},
358 	{F_TLV_METD, "METADATA TLV"},
359 	{F_TLV_REDD, "REDIRECTDATA TLV"},
360 	{0, NULL}
361 };
362 
363 #define TLV_HLN	4
364 static int
ttlv_valid(uint16_t ttlv)365 ttlv_valid(uint16_t ttlv)
366 {
367 	if (ttlv > 0) {
368 		if (ttlv == 1 || ttlv == 0x1000)
369 			return 1;
370 		if (ttlv >= 0x10 && ttlv <= 0x11)
371 			return 1;
372 		if (ttlv >= 0x110 && ttlv <= 0x116)
373 			return 1;
374 		if (ttlv >= 0x8000)
375 			return 0;	/* XXX: */
376 	}
377 
378 	return 0;
379 }
380 
381 struct forces_ilv {
382 	nd_uint32_t type;
383 	nd_uint32_t length;
384 };
385 
386 struct forces_tlv {
387 	nd_uint16_t type;
388 	nd_uint16_t length;
389 };
390 
391 #define F_ALN_LEN(len) roundup2(len, ForCES_ALNL)
392 #define	GET_TOP_TLV(fhdr) ((const struct forces_tlv *)((fhdr) + sizeof (struct forcesh)))
393 #define TLV_SET_LEN(len)  (F_ALN_LEN(TLV_HDRL) + (len))
394 #define TLV_DATA(tlvp)   ((const void*)(((const char*)(tlvp)) + TLV_SET_LEN(0)))
395 #define GO_NXT_TLV(tlv,rlen) ((rlen) -= F_ALN_LEN(GET_BE_U_2((tlv)->length)), \
396 		              (const struct forces_tlv*)(((const char*)(tlv)) \
397 				      + F_ALN_LEN(GET_BE_U_2((tlv)->length))))
398 #define ILV_SET_LEN(len)  (F_ALN_LEN(ILV_HDRL) + (len))
399 #define ILV_DATA(ilvp)   ((const void*)(((const char*)(ilvp)) + ILV_SET_LEN(0)))
400 #define GO_NXT_ILV(ilv,rlen) ((rlen) -= F_ALN_LEN(GET_BE_U_4((ilv)->length)), \
401 		              (const struct forces_ilv *)(((const char*)(ilv)) \
402 				      + F_ALN_LEN(GET_BE_U_4((ilv)->length))))
403 #define INVALID_RLEN 1
404 #define INVALID_STLN 2
405 #define INVALID_LTLN 3
406 #define INVALID_ALEN 4
407 
408 static const struct tok ForCES_TLV_err[] = {
409 	{INVALID_RLEN, "Invalid total length"},
410 	{INVALID_STLN, "xLV too short"},
411 	{INVALID_LTLN, "xLV too long"},
412 	{INVALID_ALEN, "data padding missing"},
413 	{0, NULL}
414 };
415 
416 static u_int
tlv_valid(u_int tlvl,u_int rlen)417 tlv_valid(u_int tlvl, u_int rlen)
418 {
419 	if (rlen < TLV_HDRL)
420 		return INVALID_RLEN;
421 	if (tlvl < TLV_HDRL)
422 		return INVALID_STLN;
423 	if (tlvl > rlen)
424 		return INVALID_LTLN;
425 	if (rlen < F_ALN_LEN(tlvl))
426 		return INVALID_ALEN;
427 
428 	return 0;
429 }
430 
431 static int
ilv_valid(netdissect_options * ndo,const struct forces_ilv * ilv,u_int rlen)432 ilv_valid(netdissect_options *ndo, const struct forces_ilv *ilv, u_int rlen)
433 {
434 	if (rlen < ILV_HDRL)
435 		return INVALID_RLEN;
436 	if (GET_BE_U_4(ilv->length) < ILV_HDRL)
437 		return INVALID_STLN;
438 	if (GET_BE_U_4(ilv->length) > rlen)
439 		return INVALID_LTLN;
440 	if (rlen < F_ALN_LEN(GET_BE_U_4(ilv->length)))
441 		return INVALID_ALEN;
442 
443 	return 0;
444 }
445 
446 static int lfbselect_print(netdissect_options *, const u_char * pptr, u_int len,
447 			   uint16_t op_msk, int indent);
448 static int redirect_print(netdissect_options *, const u_char * pptr, u_int len,
449 			  uint16_t op_msk, int indent);
450 static int asrtlv_print(netdissect_options *, const u_char * pptr, u_int len,
451 			uint16_t op_msk, int indent);
452 static int asttlv_print(netdissect_options *, const u_char * pptr, u_int len,
453 			uint16_t op_msk, int indent);
454 
455 struct forces_lfbsh {
456 	nd_uint32_t class;
457 	nd_uint32_t instance;
458 };
459 
460 #define ASSNS_OPS (B_OP_REPORT)
461 #define CFG_OPS	(B_OP_SET|B_OP_SETPROP|B_OP_DEL|B_OP_COMMIT|B_OP_RTRCOMP)
462 #define CFG_ROPS (B_OP_SETRESP|B_OP_SETPRESP|B_OP_DELRESP|B_OP_RCOMMIT)
463 #define CFG_QY (B_OP_GET|B_OP_GETPROP)
464 #define CFG_QYR (B_OP_GETRESP|B_OP_GETPRESP)
465 #define CFG_EVN (B_OP_REPORT)
466 
467 static const struct tom_h ForCES_msg[TOM_MAX_IND + 1] = {
468 	/* TOM_RSV_I */ {TOM_RSVD, ZERO_TTLV, 0, "Invalid message", NULL},
469 	/* TOM_ASS_I */ {TOM_ASSNSETUP, ZERO_MORE_TTLV | TWO_TLV, ASSNS_OPS,
470 		       "Association Setup", lfbselect_print},
471 	/* TOM_AST_I */
472 	    {TOM_ASSNTEARD, TTLV_T1, 0, "Association TearDown", asttlv_print},
473 	/* TOM_CFG_I */ {TOM_CONFIG, TTLV_T2, CFG_OPS, "Config", lfbselect_print},
474 	/* TOM_QRY_I */ {TOM_QUERY, TTLV_T2, CFG_QY, "Query", lfbselect_print},
475 	/* TOM_EVN_I */ {TOM_EVENTNOT, TTLV_T1, CFG_EVN, "Event Notification",
476 		       lfbselect_print},
477 	/* TOM_RED_I */
478 	    {TOM_PKTREDIR, TTLV_T2, 0, "Packet Redirect", redirect_print},
479 	/* TOM_HBT_I */ {TOM_HEARTBT, ZERO_TTLV, 0, "HeartBeat", NULL},
480 	/* TOM_ASR_I */
481 	    {TOM_ASSNSETREP, TTLV_T1, 0, "Association Response", asrtlv_print},
482 	/* TOM_CNR_I */ {TOM_CONFIGREP, TTLV_T2, CFG_ROPS, "Config Response",
483 		       lfbselect_print},
484 	/* TOM_QRR_I */
485 	    {TOM_QUERYREP, TTLV_T2, CFG_QYR, "Query Response", lfbselect_print},
486 };
487 
488 static const struct tom_h *
get_forces_tom(uint8_t tom)489 get_forces_tom(uint8_t tom)
490 {
491 	int i;
492 	for (i = TOM_RSV_I; i <= TOM_MAX_IND; i++) {
493 		const struct tom_h *th = &ForCES_msg[i];
494 		if (th->v == tom)
495 			return th;
496 	}
497 	return &ForCES_msg[TOM_RSV_I];
498 }
499 
500 struct pdata_ops {
501 	uint32_t v;
502 	uint16_t flags;
503 	uint16_t op_msk;
504 	const char *s;
505 	int (*print) (netdissect_options *, const u_char * pptr, u_int len,
506 		      uint16_t op_msk, int indent);
507 };
508 
509 enum {
510 	PD_RSV_I,
511 	PD_SEL_I,
512 	PD_FDT_I,
513 	PD_SDT_I,
514 	PD_RES_I,
515 	PD_PDT_I,
516 	_PD_RSV_MAX
517 };
518 #define PD_MAX_IND (_TOM_RSV_MAX - 1)
519 
520 static int
pd_valid(uint16_t pd)521 pd_valid(uint16_t pd)
522 {
523 	if (pd >= F_TLV_PDAT && pd <= F_TLV_REST)
524 		return 1;
525 	return 0;
526 }
527 
528 static void
chk_op_type(netdissect_options * ndo,uint16_t type,uint16_t msk,uint16_t omsk)529 chk_op_type(netdissect_options *ndo,
530             uint16_t type, uint16_t msk, uint16_t omsk)
531 {
532 	if (type != F_TLV_PDAT) {
533 		if (msk & B_KEYIN) {
534 			if (type != F_TLV_KEYI) {
535 				ND_PRINT("Based on flags expected KEYINFO TLV!\n");
536 			}
537 		} else {
538 			if (!(msk & omsk)) {
539 				ND_PRINT("Illegal DATA encoding for type 0x%x programmed %x got %x\n",
540 				          type, omsk, msk);
541 			}
542 		}
543 	}
544 
545 }
546 
547 #define F_SELKEY 1
548 #define F_SELTABRANGE 2
549 #define F_TABAPPEND 4
550 
551 struct res_val {
552 	nd_uint8_t result;
553 	nd_uint8_t resv1;
554 	nd_uint16_t resv2;
555 };
556 
557 static int prestlv_print(netdissect_options *, const u_char * pptr, u_int len,
558 			 uint16_t op_msk, int indent);
559 static int pkeyitlv_print(netdissect_options *, const u_char * pptr, u_int len,
560 			  uint16_t op_msk, int indent);
561 static int fdatatlv_print(netdissect_options *, const u_char * pptr, u_int len,
562 			  uint16_t op_msk, int indent);
563 static int sdatatlv_print(netdissect_options *, const u_char * pptr, u_int len,
564 			  uint16_t op_msk, int indent);
565 
566 static const struct pdata_ops ForCES_pdata[PD_MAX_IND + 1] = {
567 	/* PD_RSV_I */ {0, 0, 0, "Invalid message", NULL},
568 	/* PD_SEL_I */ {F_TLV_KEYI, 0, 0, "KEYINFO TLV", pkeyitlv_print},
569 	/* PD_FDT_I */ {F_TLV_FULD, 0, B_FULLD, "FULLDATA TLV", fdatatlv_print},
570 	/* PD_SDT_I */ {F_TLV_SPAD, 0, B_SPARD, "SPARSEDATA TLV", sdatatlv_print},
571 	/* PD_RES_I */ {F_TLV_REST, 0, B_RESTV, "RESULT TLV", prestlv_print},
572 	/* PD_PDT_I */
573 	    {F_TLV_PDAT, 0, 0, "Inner PATH-DATA TLV", recpdoptlv_print},
574 };
575 
576 static const struct pdata_ops *
get_forces_pd(uint16_t pd)577 get_forces_pd(uint16_t pd)
578 {
579 	int i;
580 	for (i = PD_RSV_I + 1; i <= PD_MAX_IND; i++) {
581 		const struct pdata_ops *pdo = &ForCES_pdata[i];
582 		if (pdo->v == pd)
583 			return pdo;
584 	}
585 	return &ForCES_pdata[TOM_RSV_I];
586 }
587 
588 enum {
589 	E_SUCCESS,
590 	E_INVALID_HEADER,
591 	E_LENGTH_MISMATCH,
592 	E_VERSION_MISMATCH,
593 	E_INVALID_DESTINATION_PID,
594 	E_LFB_UNKNOWN,
595 	E_LFB_NOT_FOUND,
596 	E_LFB_INSTANCE_ID_NOT_FOUND,
597 	E_INVALID_PATH,
598 	E_COMPONENT_DOES_NOT_EXIST,
599 	E_EXISTS,
600 	E_NOT_FOUND,
601 	E_READ_ONLY,
602 	E_INVALID_ARRAY_CREATION,
603 	E_VALUE_OUT_OF_RANGE,
604 	E_CONTENTS_TOO_LONG,
605 	E_INVALID_PARAMETERS,
606 	E_INVALID_MESSAGE_TYPE,
607 	E_INVALID_FLAGS,
608 	E_INVALID_TLV,
609 	E_EVENT_ERROR,
610 	E_NOT_SUPPORTED,
611 	E_MEMORY_ERROR,
612 	E_INTERNAL_ERROR,
613 	/* 0x18-0xFE are reserved .. */
614 	E_UNSPECIFIED_ERROR = 0XFF
615 };
616 
617 static const struct tok ForCES_errs[] = {
618 	{E_SUCCESS, "SUCCESS"},
619 	{E_INVALID_HEADER, "INVALID HEADER"},
620 	{E_LENGTH_MISMATCH, "LENGTH MISMATCH"},
621 	{E_VERSION_MISMATCH, "VERSION MISMATCH"},
622 	{E_INVALID_DESTINATION_PID, "INVALID DESTINATION PID"},
623 	{E_LFB_UNKNOWN, "LFB UNKNOWN"},
624 	{E_LFB_NOT_FOUND, "LFB NOT FOUND"},
625 	{E_LFB_INSTANCE_ID_NOT_FOUND, "LFB INSTANCE ID NOT FOUND"},
626 	{E_INVALID_PATH, "INVALID PATH"},
627 	{E_COMPONENT_DOES_NOT_EXIST, "COMPONENT DOES NOT EXIST"},
628 	{E_EXISTS, "EXISTS ALREADY"},
629 	{E_NOT_FOUND, "NOT FOUND"},
630 	{E_READ_ONLY, "READ ONLY"},
631 	{E_INVALID_ARRAY_CREATION, "INVALID ARRAY CREATION"},
632 	{E_VALUE_OUT_OF_RANGE, "VALUE OUT OF RANGE"},
633 	{E_CONTENTS_TOO_LONG, "CONTENTS TOO LONG"},
634 	{E_INVALID_PARAMETERS, "INVALID PARAMETERS"},
635 	{E_INVALID_MESSAGE_TYPE, "INVALID MESSAGE TYPE"},
636 	{E_INVALID_FLAGS, "INVALID FLAGS"},
637 	{E_INVALID_TLV, "INVALID TLV"},
638 	{E_EVENT_ERROR, "EVENT ERROR"},
639 	{E_NOT_SUPPORTED, "NOT SUPPORTED"},
640 	{E_MEMORY_ERROR, "MEMORY ERROR"},
641 	{E_INTERNAL_ERROR, "INTERNAL ERROR"},
642 	{E_UNSPECIFIED_ERROR, "UNSPECIFIED ERROR"},
643 	{0, NULL}
644 };
645 
646 #define RESLEN	4
647 
648 static int
prestlv_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk _U_,int indent)649 prestlv_print(netdissect_options *ndo,
650               const u_char * pptr, u_int len,
651               uint16_t op_msk _U_, int indent)
652 {
653 	const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
654 	const u_char *tdp = (const u_char *) TLV_DATA(tlv);
655 	const struct res_val *r = (const struct res_val *)tdp;
656 	u_int dlen;
657 	uint8_t result;
658 
659 	/*
660 	 * pdatacnt_print() has ensured that len (the TLV length)
661 	 * >= TLV_HDRL.
662 	 */
663 	dlen = len - TLV_HDRL;
664 	if (dlen != RESLEN) {
665 		ND_PRINT("illegal RESULT-TLV: %u bytes!\n", dlen);
666 		return -1;
667 	}
668 
669 	ND_TCHECK_SIZE(r);
670 	result = GET_U_1(r->result);
671 	if (result >= 0x18 && result <= 0xFE) {
672 		ND_PRINT("illegal reserved result code: 0x%x!\n", result);
673 		return -1;
674 	}
675 
676 	if (ndo->ndo_vflag >= 3) {
677 		char *ib = indent_pr(indent, 0);
678 		ND_PRINT("%s  Result: %s (code 0x%x)\n", ib,
679 		       tok2str(ForCES_errs, NULL, result), result);
680 	}
681 	return 0;
682 
683 trunc:
684 	nd_print_trunc(ndo);
685 	return -1;
686 }
687 
688 static int
fdatatlv_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk _U_,int indent)689 fdatatlv_print(netdissect_options *ndo,
690                const u_char * pptr, u_int len,
691                uint16_t op_msk _U_, int indent)
692 {
693 	const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
694 	u_int rlen;
695 	const u_char *tdp = (const u_char *) TLV_DATA(tlv);
696 	uint16_t type;
697 
698 	/*
699 	 * pdatacnt_print() or pkeyitlv_print() has ensured that len
700 	 * (the TLV length) >= TLV_HDRL.
701 	 */
702 	rlen = len - TLV_HDRL;
703 	ND_TCHECK_SIZE(tlv);
704 	type = GET_BE_U_2(tlv->type);
705 	if (type != F_TLV_FULD) {
706 		ND_PRINT("Error: expecting FULLDATA!\n");
707 		return -1;
708 	}
709 
710 	if (ndo->ndo_vflag >= 3) {
711 		char *ib = indent_pr(indent + 2, 1);
712 		ND_PRINT("%s[", ib + 1);
713 		hex_print(ndo, ib, tdp, rlen);
714 		ND_PRINT("\n%s]", ib + 1);
715 	}
716 	return 0;
717 
718 trunc:
719 	nd_print_trunc(ndo);
720 	return -1;
721 }
722 
723 static int
sdatailv_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk _U_,int indent)724 sdatailv_print(netdissect_options *ndo,
725                const u_char * pptr, u_int len,
726                uint16_t op_msk _U_, int indent)
727 {
728 	u_int rlen;
729 	const struct forces_ilv *ilv = (const struct forces_ilv *)pptr;
730 	int invilv;
731 
732 	if (len < ILV_HDRL) {
733 		ND_PRINT("Error: BAD SPARSEDATA-TLV!\n");
734 		return -1;
735 	}
736 	rlen = len;
737 	indent += 1;
738 	while (rlen != 0) {
739 #if 0
740 		ND_PRINT("Jamal - outstanding length <%u>\n", rlen);
741 #endif
742 		char *ib = indent_pr(indent, 1);
743 		const u_char *tdp = (const u_char *) ILV_DATA(ilv);
744 		invilv = ilv_valid(ndo, ilv, rlen);
745 		if (invilv) {
746 			ND_PRINT("Error: %s, rlen %u\n",
747 			         tok2str(ForCES_TLV_err, NULL, invilv), rlen);
748 			return -1;
749 		}
750 		if (ndo->ndo_vflag >= 3) {
751 			u_int ilvl = GET_BE_U_4(ilv->length);
752 			ND_PRINT("\n%s ILV: type %x length %u\n", ib + 1,
753 				  GET_BE_U_4(ilv->type), ilvl);
754 			hex_print(ndo, "\t\t[", tdp, ilvl-ILV_HDRL);
755 		}
756 
757 		ilv = GO_NXT_ILV(ilv, rlen);
758 	}
759 
760 	return 0;
761 }
762 
763 static int
sdatatlv_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk,int indent)764 sdatatlv_print(netdissect_options *ndo,
765                const u_char * pptr, u_int len,
766                uint16_t op_msk, int indent)
767 {
768 	const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
769 	u_int rlen;
770 	const u_char *tdp = (const u_char *) TLV_DATA(tlv);
771 	uint16_t type;
772 
773 	/*
774 	 * pdatacnt_print() has ensured that len (the TLV length)
775 	 * >= TLV_HDRL.
776 	 */
777 	rlen = len - TLV_HDRL;
778 	ND_TCHECK_SIZE(tlv);
779 	type = GET_BE_U_2(tlv->type);
780 	if (type != F_TLV_SPAD) {
781 		ND_PRINT("Error: expecting SPARSEDATA!\n");
782 		return -1;
783 	}
784 
785 	return sdatailv_print(ndo, tdp, rlen, op_msk, indent);
786 
787 trunc:
788 	nd_print_trunc(ndo);
789 	return -1;
790 }
791 
792 static int
pkeyitlv_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk,int indent)793 pkeyitlv_print(netdissect_options *ndo,
794                const u_char * pptr, u_int len,
795                uint16_t op_msk, int indent)
796 {
797 	const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
798 	const u_char *tdp = (const u_char *) TLV_DATA(tlv);
799 	const u_char *dp = tdp + 4;
800 	const struct forces_tlv *kdtlv = (const struct forces_tlv *)dp;
801 	uint32_t id;
802 	char *ib = indent_pr(indent, 0);
803 	uint16_t type, tll;
804 	u_int invtlv;
805 
806 	id = GET_BE_U_4(tdp);
807 	ND_PRINT("%sKeyinfo: Key 0x%x\n", ib, id);
808 	type = GET_BE_U_2(kdtlv->type);
809 	tll = GET_BE_U_2(kdtlv->length);
810 	invtlv = tlv_valid(tll, len);
811 
812 	if (invtlv) {
813 		ND_PRINT("%s TLV type 0x%x len %u\n",
814 		       tok2str(ForCES_TLV_err, NULL, invtlv), type,
815 		       tll);
816 		return -1;
817 	}
818 	/*
819 	 * At this point, tlv_valid() has ensured that the TLV
820 	 * length is large enough but not too large (it doesn't
821 	 * go past the end of the containing TLV).
822 	 */
823 	tll = GET_BE_U_2(kdtlv->length);
824 	dp = (const u_char *) TLV_DATA(kdtlv);
825 	return fdatatlv_print(ndo, dp, tll, op_msk, indent);
826 }
827 
828 #define PTH_DESC_SIZE 12
829 
830 static int
pdatacnt_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t IDcnt,uint16_t op_msk,int indent)831 pdatacnt_print(netdissect_options *ndo,
832                const u_char * pptr, u_int len,
833                uint16_t IDcnt, uint16_t op_msk, int indent)
834 {
835 	u_int i;
836 	uint32_t id;
837 	char *ib = indent_pr(indent, 0);
838 
839 	if ((op_msk & B_APPND) && ndo->ndo_vflag >= 3) {
840 		ND_PRINT("%sTABLE APPEND\n", ib);
841 	}
842 	for (i = 0; i < IDcnt; i++) {
843 		ND_TCHECK_4(pptr);
844 		if (len < 4)
845 			goto trunc;
846 		id = GET_BE_U_4(pptr);
847 		if (ndo->ndo_vflag >= 3)
848 			ND_PRINT("%sID#%02u: %u\n", ib, i + 1, id);
849 		len -= 4;
850 		pptr += 4;
851 	}
852 
853 	if ((op_msk & B_TRNG) || (op_msk & B_KEYIN)) {
854 		if (op_msk & B_TRNG) {
855 			uint32_t starti, endi;
856 
857 			if (len < PTH_DESC_SIZE) {
858 				ND_PRINT("pathlength %u with key/range too short %u\n",
859 				       len, PTH_DESC_SIZE);
860 				return -1;
861 			}
862 
863 			pptr += sizeof(struct forces_tlv);
864 			len -= sizeof(struct forces_tlv);
865 
866 			starti = GET_BE_U_4(pptr);
867 			pptr += 4;
868 			len -= 4;
869 
870 			endi = GET_BE_U_4(pptr);
871 			pptr += 4;
872 			len -= 4;
873 
874 			if (ndo->ndo_vflag >= 3)
875 				ND_PRINT("%sTable range: [%u,%u]\n", ib, starti, endi);
876 		}
877 
878 		if (op_msk & B_KEYIN) {
879 			const struct forces_tlv *keytlv;
880 			uint16_t tll;
881 
882 			if (len < PTH_DESC_SIZE) {
883 				ND_PRINT("pathlength %u with key/range too short %u\n",
884 				       len, PTH_DESC_SIZE);
885 				return -1;
886 			}
887 
888 			/* skip keyid */
889 			pptr += 4;
890 			len -= 4;
891 			keytlv = (const struct forces_tlv *)pptr;
892 			/* skip header */
893 			pptr += sizeof(struct forces_tlv);
894 			len -= sizeof(struct forces_tlv);
895 			/* skip key content */
896 			tll = GET_BE_U_2(keytlv->length);
897 			if (tll < TLV_HDRL) {
898 				ND_PRINT("key content length %u < %u\n",
899 					tll, TLV_HDRL);
900 				return -1;
901 			}
902 			tll -= TLV_HDRL;
903 			if (len < tll) {
904 				ND_PRINT("key content too short\n");
905 				return -1;
906 			}
907 			pptr += tll;
908 			len -= tll;
909 		}
910 
911 	}
912 
913 	if (len) {
914 		const struct forces_tlv *pdtlv = (const struct forces_tlv *)pptr;
915 		uint16_t type;
916 		uint16_t tlvl, tll;
917 		u_int pad = 0;
918 		u_int aln;
919 		u_int invtlv;
920 
921 		type = GET_BE_U_2(pdtlv->type);
922 		tlvl = GET_BE_U_2(pdtlv->length);
923 		invtlv = tlv_valid(tlvl, len);
924 		if (invtlv) {
925 			ND_PRINT("%s Outstanding bytes %u for TLV type 0x%x TLV len %u\n",
926 			          tok2str(ForCES_TLV_err, NULL, invtlv), len, type,
927 			          tlvl);
928 			goto pd_err;
929 		}
930 		/*
931 		 * At this point, tlv_valid() has ensured that the TLV
932 		 * length is large enough but not too large (it doesn't
933 		 * go past the end of the containing TLV).
934 		 */
935 		tll = tlvl - TLV_HDRL;
936 		aln = F_ALN_LEN(tlvl);
937 		if (aln > tlvl) {
938 			if (aln > len) {
939 				ND_PRINT("Invalid padded pathdata TLV type 0x%x len %u missing %u pad bytes\n",
940 				          type, tlvl, aln - len);
941 			} else {
942 				pad = aln - tlvl;
943 			}
944 		}
945 		if (pd_valid(type)) {
946 			const struct pdata_ops *ops = get_forces_pd(type);
947 
948 			if (ndo->ndo_vflag >= 3 && ops->v != F_TLV_PDAT) {
949 				if (pad)
950 					ND_PRINT("%s  %s (Length %u DataLen %u pad %u Bytes)\n",
951 					          ib, ops->s, tlvl, tll, pad);
952 				else
953 					ND_PRINT("%s  %s (Length %u DataLen %u Bytes)\n",
954 					          ib, ops->s, tlvl, tll);
955 			}
956 
957 			chk_op_type(ndo, type, op_msk, ops->op_msk);
958 
959 			if (ops->print(ndo, (const u_char *)pdtlv,
960 					tll + pad + TLV_HDRL, op_msk,
961 					indent + 2) == -1)
962 				return -1;
963 			len -= (TLV_HDRL + pad + tll);
964 		} else {
965 			ND_PRINT("Invalid path data content type 0x%x len %u\n",
966 			       type, tlvl);
967 pd_err:
968 			if (tlvl) {
969                                 hex_print(ndo, "Bad Data val\n\t  [",
970 					  pptr, len);
971 				ND_PRINT("]\n");
972 
973 				return -1;
974 			}
975 		}
976 	}
977 	return len;
978 
979 trunc:
980 	nd_print_trunc(ndo);
981 	return -1;
982 }
983 
984 static int
pdata_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk,int indent)985 pdata_print(netdissect_options *ndo,
986             const u_char * pptr, u_int len,
987             uint16_t op_msk, int indent)
988 {
989 	const struct pathdata_h *pdh = (const struct pathdata_h *)pptr;
990 	char *ib = indent_pr(indent, 0);
991 	u_int minsize = 0;
992 	int more_pd = 0;
993 	uint16_t idcnt = 0;
994 
995 	ND_TCHECK_SIZE(pdh);
996 	if (len < sizeof(struct pathdata_h))
997 		goto trunc;
998 	if (ndo->ndo_vflag >= 3) {
999 		ND_PRINT("\n%sPathdata: Flags 0x%x ID count %u\n",
1000 		       ib, GET_BE_U_2(pdh->pflags),
1001 		       GET_BE_U_2(pdh->pIDcnt));
1002 	}
1003 
1004 	if (GET_BE_U_2(pdh->pflags) & F_SELKEY) {
1005 		op_msk |= B_KEYIN;
1006 	}
1007 
1008 	/* Table GET Range operation */
1009 	if (GET_BE_U_2(pdh->pflags) & F_SELTABRANGE) {
1010 		op_msk |= B_TRNG;
1011 	}
1012 	/* Table SET append operation */
1013 	if (GET_BE_U_2(pdh->pflags) & F_TABAPPEND) {
1014 		op_msk |= B_APPND;
1015 	}
1016 
1017 	pptr += sizeof(struct pathdata_h);
1018 	len -= sizeof(struct pathdata_h);
1019 	idcnt = GET_BE_U_2(pdh->pIDcnt);
1020 	minsize = idcnt * 4;
1021 	if (len < minsize) {
1022 		ND_PRINT("\t\t\ttruncated IDs expected %uB got %uB\n", minsize,
1023 		       len);
1024 		hex_print(ndo, "\t\t\tID Data[", pptr, len);
1025 		ND_PRINT("]\n");
1026 		return -1;
1027 	}
1028 
1029 	if ((op_msk & B_TRNG) && (op_msk & B_KEYIN)) {
1030 		ND_PRINT("\t\t\tIllegal to have both Table ranges and keys\n");
1031 		return -1;
1032 	}
1033 
1034 	more_pd = pdatacnt_print(ndo, pptr, len, idcnt, op_msk, indent);
1035 	if (more_pd > 0) {
1036 		int consumed = len - more_pd;
1037 		pptr += consumed;
1038 		len = more_pd;
1039 		/* XXX: Argh, recurse some more */
1040 		return recpdoptlv_print(ndo, pptr, len, op_msk, indent+1);
1041 	} else
1042 		return 0;
1043 
1044 trunc:
1045 	nd_print_trunc(ndo);
1046 	return -1;
1047 }
1048 
1049 static int
genoptlv_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk,int indent)1050 genoptlv_print(netdissect_options *ndo,
1051                const u_char * pptr, u_int len,
1052                uint16_t op_msk, int indent)
1053 {
1054 	const struct forces_tlv *pdtlv = (const struct forces_tlv *)pptr;
1055 	uint16_t type;
1056 	u_int tlvl;
1057 	u_int invtlv;
1058 	char *ib = indent_pr(indent, 0);
1059 
1060 	type = GET_BE_U_2(pdtlv->type);
1061 	tlvl = GET_BE_U_2(pdtlv->length);
1062 	invtlv = tlv_valid(tlvl, len);
1063 	ND_PRINT("genoptlvprint - %s TLV type 0x%x len %u\n",
1064 	       tok2str(ForCES_TLV, NULL, type), type, tlvl);
1065 	if (!invtlv) {
1066 		/*
1067 		 * At this point, tlv_valid() has ensured that the TLV
1068 		 * length is large enough but not too large (it doesn't
1069 		 * go past the end of the containing TLV).
1070 		 */
1071 		const u_char *dp = (const u_char *) TLV_DATA(pdtlv);
1072 
1073 		if (!ttlv_valid(type)) {
1074 			ND_PRINT("%s TLV type 0x%x len %u\n",
1075 			       tok2str(ForCES_TLV_err, NULL, invtlv), type,
1076 			       tlvl);
1077 			return -1;
1078 		}
1079 		if (ndo->ndo_vflag >= 3)
1080 			ND_PRINT("%s%s, length %u (data length %u Bytes)",
1081 			       ib, tok2str(ForCES_TLV, NULL, type),
1082 			       tlvl, tlvl - TLV_HDRL);
1083 
1084 		return pdata_print(ndo, dp, tlvl - TLV_HDRL, op_msk, indent + 1);
1085 	} else {
1086 		ND_PRINT("\t\t\tInvalid ForCES TLV type=%x", type);
1087 		return -1;
1088 	}
1089 }
1090 
1091 static int
recpdoptlv_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk,int indent)1092 recpdoptlv_print(netdissect_options *ndo,
1093                  const u_char * pptr, u_int len,
1094                  uint16_t op_msk, int indent)
1095 {
1096 	const struct forces_tlv *pdtlv = (const struct forces_tlv *)pptr;
1097 
1098 	while (len != 0) {
1099 		uint16_t type, tlvl;
1100 		u_int invtlv;
1101 		char *ib;
1102 		const u_char *dp;
1103 
1104 		tlvl = GET_BE_U_2(pdtlv->length);
1105 		invtlv = tlv_valid(tlvl, len);
1106 		if (invtlv) {
1107 			break;
1108 		}
1109 
1110 		/*
1111 		 * At this point, tlv_valid() has ensured that the TLV
1112 		 * length is large enough but not too large (it doesn't
1113 		 * go past the end of the containing TLV).
1114 		 */
1115 		ib = indent_pr(indent, 0);
1116 		type = GET_BE_U_2(pdtlv->type);
1117 		dp = (const u_char *) TLV_DATA(pdtlv);
1118 
1119 		if (ndo->ndo_vflag >= 3)
1120 			ND_PRINT("%s%s, length %u (data encapsulated %u Bytes)",
1121 			          ib, tok2str(ForCES_TLV, NULL, type),
1122 			          tlvl,
1123 			          tlvl - TLV_HDRL);
1124 
1125 		if (pdata_print(ndo, dp, tlvl - TLV_HDRL, op_msk, indent + 1) == -1)
1126 			return -1;
1127 		pdtlv = GO_NXT_TLV(pdtlv, len);
1128 	}
1129 
1130 	if (len) {
1131 		ND_PRINT("\n\t\tMessy PATHDATA TLV header, type (0x%x)\n\t\texcess of %u Bytes ",
1132 		          GET_BE_U_2(pdtlv->type),
1133 		          len - GET_BE_U_2(pdtlv->length));
1134 		return -1;
1135 	}
1136 
1137 	return 0;
1138 }
1139 
1140 static int
invoptlv_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk _U_,int indent)1141 invoptlv_print(netdissect_options *ndo,
1142                const u_char * pptr, u_int len,
1143                uint16_t op_msk _U_, int indent)
1144 {
1145 	char *ib = indent_pr(indent, 1);
1146 
1147 	if (ndo->ndo_vflag >= 3) {
1148 		ND_PRINT("%sData[", ib + 1);
1149 		hex_print(ndo, ib, pptr, len);
1150 		ND_PRINT("%s]\n", ib);
1151 	}
1152 	return -1;
1153 }
1154 
1155 static int
otlv_print(netdissect_options * ndo,const struct forces_tlv * otlv,uint16_t op_msk _U_,int indent)1156 otlv_print(netdissect_options *ndo,
1157            const struct forces_tlv *otlv, uint16_t op_msk _U_, int indent)
1158 {
1159 	int rc = 0;
1160 	const u_char *dp = (const u_char *) TLV_DATA(otlv);
1161 	uint16_t type;
1162 	u_int tll;
1163 	char *ib = indent_pr(indent, 0);
1164 	const struct optlv_h *ops;
1165 
1166 	/*
1167 	 * lfbselect_print() has ensured that GET_BE_U_2(otlv->length)
1168 	 * >= TLV_HDRL.
1169 	 */
1170 	type = GET_BE_U_2(otlv->type);
1171 	tll = GET_BE_U_2(otlv->length) - TLV_HDRL;
1172 	ops = get_forces_optlv_h(type);
1173 	if (ndo->ndo_vflag >= 3) {
1174 		ND_PRINT("%sOper TLV %s(0x%x) length %u\n", ib, ops->s, type,
1175 		       GET_BE_U_2(otlv->length));
1176 	}
1177 	/* rest of ops must at least have 12B {pathinfo} */
1178 	if (tll < OP_MIN_SIZ) {
1179 		ND_PRINT("\t\tOper TLV %s(0x%x) length %u\n", ops->s, type,
1180 		       GET_BE_U_2(otlv->length));
1181 		ND_PRINT("\t\tTruncated data size %u minimum required %u\n", tll,
1182 		       OP_MIN_SIZ);
1183 		return invoptlv_print(ndo, dp, tll, ops->op_msk, indent);
1184 
1185 	}
1186 
1187 	/* XXX - do anything with ops->flags? */
1188         if(ops->print) {
1189                 rc = ops->print(ndo, dp, tll, ops->op_msk, indent + 1);
1190         }
1191 	return rc;
1192 }
1193 
1194 #define ASTDLN	4
1195 #define ASTMCD	255
1196 static int
asttlv_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk _U_,int indent)1197 asttlv_print(netdissect_options *ndo,
1198              const u_char * pptr, u_int len,
1199              uint16_t op_msk _U_, int indent)
1200 {
1201 	uint32_t rescode;
1202 	u_int dlen;
1203 	char *ib = indent_pr(indent, 0);
1204 
1205 	/*
1206 	 * forces_type_print() has ensured that len (the TLV length)
1207 	 * >= TLV_HDRL.
1208 	 */
1209 	dlen = len - TLV_HDRL;
1210 	if (dlen != ASTDLN) {
1211 		ND_PRINT("illegal ASTresult-TLV: %u bytes!\n", dlen);
1212 		return -1;
1213 	}
1214 	rescode = GET_BE_U_4(pptr);
1215 	if (rescode > ASTMCD) {
1216 		ND_PRINT("illegal ASTresult result code: %u!\n", rescode);
1217 		return -1;
1218 	}
1219 
1220 	if (ndo->ndo_vflag >= 3) {
1221 		ND_PRINT("Teardown reason:\n%s", ib);
1222 		switch (rescode) {
1223 		case 0:
1224 			ND_PRINT("Normal Teardown");
1225 			break;
1226 		case 1:
1227 			ND_PRINT("Loss of Heartbeats");
1228 			break;
1229 		case 2:
1230 			ND_PRINT("Out of bandwidth");
1231 			break;
1232 		case 3:
1233 			ND_PRINT("Out of Memory");
1234 			break;
1235 		case 4:
1236 			ND_PRINT("Application Crash");
1237 			break;
1238 		default:
1239 			ND_PRINT("Unknown Teardown reason");
1240 			break;
1241 		}
1242 		ND_PRINT("(%x)\n%s", rescode, ib);
1243 	}
1244 	return 0;
1245 }
1246 
1247 #define ASRDLN	4
1248 #define ASRMCD	3
1249 static int
asrtlv_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk _U_,int indent)1250 asrtlv_print(netdissect_options *ndo,
1251              const u_char * pptr, u_int len,
1252              uint16_t op_msk _U_, int indent)
1253 {
1254 	uint32_t rescode;
1255 	u_int dlen;
1256 	char *ib = indent_pr(indent, 0);
1257 
1258 	/*
1259 	 * forces_type_print() has ensured that len (the TLV length)
1260 	 * >= TLV_HDRL.
1261 	 */
1262 	dlen = len - TLV_HDRL;
1263 	if (dlen != ASRDLN) {	/* id, instance, oper tlv */
1264 		ND_PRINT("illegal ASRresult-TLV: %u bytes!\n", dlen);
1265 		return -1;
1266 	}
1267 	rescode = GET_BE_U_4(pptr);
1268 
1269 	if (rescode > ASRMCD) {
1270 		ND_PRINT("illegal ASRresult result code: %u!\n", rescode);
1271 		return -1;
1272 	}
1273 
1274 	if (ndo->ndo_vflag >= 3) {
1275 		ND_PRINT("\n%s", ib);
1276 		switch (rescode) {
1277 		case 0:
1278 			ND_PRINT("Success ");
1279 			break;
1280 		case 1:
1281 			ND_PRINT("FE ID invalid ");
1282 			break;
1283 		case 2:
1284 			ND_PRINT("permission denied ");
1285 			break;
1286 		default:
1287 			ND_PRINT("Unknown ");
1288 			break;
1289 		}
1290 		ND_PRINT("(%x)\n%s", rescode, ib);
1291 	}
1292 	return 0;
1293 }
1294 
1295 #if 0
1296 /*
1297  * XXX - not used.
1298  */
1299 static int
1300 gentltlv_print(netdissect_options *ndo,
1301                const u_char * pptr _U_, u_int len,
1302                uint16_t op_msk _U_, int indent _U_)
1303 {
1304 	u_int dlen = len - TLV_HDRL;
1305 
1306 	if (dlen < 4) {		/* at least 32 bits must exist */
1307 		ND_PRINT("truncated TLV: %u bytes missing! ", 4 - dlen);
1308 		return -1;
1309 	}
1310 	return 0;
1311 }
1312 #endif
1313 
1314 #define RD_MIN 8
1315 
1316 static int
print_metailv(netdissect_options * ndo,const u_char * pptr,uint16_t op_msk _U_,int indent)1317 print_metailv(netdissect_options *ndo,
1318               const u_char * pptr, uint16_t op_msk _U_, int indent)
1319 {
1320 	u_int rlen;
1321 	char *ib = indent_pr(indent, 0);
1322 	/* XXX: check header length */
1323 	const struct forces_ilv *ilv = (const struct forces_ilv *)pptr;
1324 
1325 	/*
1326 	 * print_metatlv() has ensured that len (what remains in the
1327 	 * ILV) >= ILV_HDRL.
1328 	 */
1329 	rlen = GET_BE_U_4(ilv->length) - ILV_HDRL;
1330 	ND_PRINT("%sMetaID 0x%x length %u\n", ib, GET_BE_U_4(ilv->type),
1331 		  GET_BE_U_4(ilv->length));
1332 	if (ndo->ndo_vflag >= 3) {
1333 		hex_print(ndo, "\t\t[", ILV_DATA(ilv), rlen);
1334 		ND_PRINT(" ]\n");
1335 	}
1336 	return 0;
1337 }
1338 
1339 static int
print_metatlv(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk _U_,int indent)1340 print_metatlv(netdissect_options *ndo,
1341               const u_char * pptr, u_int len,
1342               uint16_t op_msk _U_, int indent)
1343 {
1344 	u_int dlen;
1345 	char *ib = indent_pr(indent, 0);
1346 	u_int rlen;
1347 	const struct forces_ilv *ilv = (const struct forces_ilv *)pptr;
1348 	int invilv;
1349 
1350 	/*
1351 	 * redirect_print() has ensured that len (what remains in the
1352 	 * TLV) >= TLV_HDRL.
1353 	 */
1354 	dlen = len - TLV_HDRL;
1355 	rlen = dlen;
1356 	ND_PRINT("\n%s METADATA length %u\n", ib, rlen);
1357 	while (rlen != 0) {
1358 		invilv = ilv_valid(ndo, ilv, rlen);
1359 		if (invilv) {
1360 			break;
1361 		}
1362 
1363 		/*
1364 		 * At this point, ilv_valid() has ensured that the ILV
1365 		 * length is large enough but not too large (it doesn't
1366 		 * go past the end of the containing TLV).
1367 		 */
1368 		print_metailv(ndo, (const u_char *) ilv, 0, indent + 1);
1369 		ilv = GO_NXT_ILV(ilv, rlen);
1370 	}
1371 
1372 	return 0;
1373 }
1374 
1375 
1376 static int
print_reddata(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk _U_,int indent)1377 print_reddata(netdissect_options *ndo,
1378               const u_char * pptr, u_int len,
1379               uint16_t op_msk _U_, int indent)
1380 {
1381 	u_int dlen;
1382 	char *ib = indent_pr(indent, 0);
1383 	u_int rlen;
1384 
1385 	dlen = len - TLV_HDRL;
1386 	rlen = dlen;
1387 	ND_PRINT("\n%s Redirect Data length %u\n", ib, rlen);
1388 
1389 	if (ndo->ndo_vflag >= 3) {
1390 		ND_PRINT("\t\t[");
1391 		hex_print(ndo, "\n\t\t", pptr, rlen);
1392 		ND_PRINT("\n\t\t]");
1393 	}
1394 
1395 	return 0;
1396 }
1397 
1398 static int
redirect_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk _U_,int indent)1399 redirect_print(netdissect_options *ndo,
1400                const u_char * pptr, u_int len,
1401                uint16_t op_msk _U_, int indent)
1402 {
1403 	const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
1404 	u_int dlen;
1405 	u_int rlen;
1406 	u_int invtlv;
1407 
1408 	/*
1409 	 * forces_type_print() has ensured that len (the TLV length)
1410 	 * >= TLV_HDRL.
1411 	 */
1412 	dlen = len - TLV_HDRL;
1413 	if (dlen <= RD_MIN) {
1414 		ND_PRINT("\n\t\ttruncated Redirect TLV: %u bytes missing! ",
1415 		       RD_MIN - dlen);
1416 		return -1;
1417 	}
1418 
1419 	rlen = dlen;
1420 	indent += 1;
1421 	while (rlen != 0) {
1422 		uint16_t type, tlvl;
1423 
1424 		type = GET_BE_U_2(tlv->type);
1425 		tlvl = GET_BE_U_2(tlv->length);
1426 		invtlv = tlv_valid(tlvl, rlen);
1427 		if (invtlv) {
1428 			ND_PRINT("Bad Redirect data\n");
1429 			break;
1430 		}
1431 
1432 		/*
1433 		 * At this point, tlv_valid() has ensured that the TLV
1434 		 * length is large enough but not too large (it doesn't
1435 		 * go past the end of the containing TLV).
1436 		 */
1437 		if (type == F_TLV_METD) {
1438 			print_metatlv(ndo, (const u_char *) TLV_DATA(tlv),
1439 				      tlvl, 0,
1440 				      indent);
1441 		} else if (type == F_TLV_REDD) {
1442 			print_reddata(ndo, (const u_char *) TLV_DATA(tlv),
1443 				      tlvl, 0,
1444 				      indent);
1445 		} else {
1446 			ND_PRINT("Unknown REDIRECT TLV 0x%x len %u\n",
1447 			       type,
1448 			       tlvl);
1449 		}
1450 
1451 		tlv = GO_NXT_TLV(tlv, rlen);
1452 	}
1453 
1454 	if (rlen) {
1455 		ND_PRINT("\n\t\tMessy Redirect TLV header, type (0x%x)\n\t\texcess of %u Bytes ",
1456 		          GET_BE_U_2(tlv->type),
1457 		          rlen - GET_BE_U_2(tlv->length));
1458 		return -1;
1459 	}
1460 
1461 	return 0;
1462 }
1463 
1464 #define OP_OFF 8
1465 #define OP_MIN 12
1466 
1467 static int
lfbselect_print(netdissect_options * ndo,const u_char * pptr,u_int len,uint16_t op_msk,int indent)1468 lfbselect_print(netdissect_options *ndo,
1469                 const u_char * pptr, u_int len,
1470                 uint16_t op_msk, int indent)
1471 {
1472 	const struct forces_lfbsh *lfbs;
1473 	const struct forces_tlv *otlv;
1474 	char *ib = indent_pr(indent, 0);
1475 	u_int dlen;
1476 	u_int rlen;
1477 	u_int invtlv;
1478 
1479 	/*
1480 	 * forces_type_print() has ensured that len (the TLV length)
1481 	 * >= TLV_HDRL.
1482 	 */
1483 	dlen = len - TLV_HDRL;
1484 	if (dlen <= OP_MIN) {	/* id, instance, oper tlv header .. */
1485 		ND_PRINT("\n\t\ttruncated lfb selector: %u bytes missing! ",
1486 		       OP_MIN - dlen);
1487 		return -1;
1488 	}
1489 
1490 	/*
1491 	 * At this point, we know that dlen > OP_MIN; OP_OFF < OP_MIN, so
1492 	 * we also know that it's > OP_OFF.
1493 	 */
1494 	rlen = dlen - OP_OFF;
1495 
1496 	lfbs = (const struct forces_lfbsh *)pptr;
1497 	ND_TCHECK_SIZE(lfbs);
1498 	if (ndo->ndo_vflag >= 3) {
1499 		ND_PRINT("\n%s%s(Classid %x) instance %x\n",
1500 		       ib,
1501 		       tok2str(ForCES_LFBs, NULL, GET_BE_U_4(lfbs->class)),
1502 		       GET_BE_U_4(lfbs->class),
1503 		       GET_BE_U_4(lfbs->instance));
1504 	}
1505 
1506 	otlv = (const struct forces_tlv *)(lfbs + 1);
1507 
1508 	indent += 1;
1509 	while (rlen != 0) {
1510 		uint16_t type, tlvl;
1511 
1512 		type = GET_BE_U_2(otlv->type);
1513 		tlvl = GET_BE_U_2(otlv->length);
1514 		invtlv = tlv_valid(tlvl, rlen);
1515 		if (invtlv)
1516 			break;
1517 
1518 		/*
1519 		 * At this point, tlv_valid() has ensured that the TLV
1520 		 * length is large enough but not too large (it doesn't
1521 		 * go past the end of the containing TLV).
1522 		 */
1523 		if (op_valid(type, op_msk)) {
1524 			otlv_print(ndo, otlv, 0, indent);
1525 		} else {
1526 			if (ndo->ndo_vflag < 3)
1527 				ND_PRINT("\n");
1528 			ND_PRINT("\t\tINValid oper-TLV type 0x%x length %u for this ForCES message\n",
1529 			          type, tlvl);
1530 			invoptlv_print(ndo, (const u_char *)otlv, rlen, 0, indent);
1531 		}
1532 		otlv = GO_NXT_TLV(otlv, rlen);
1533 	}
1534 
1535 	if (rlen) {
1536 		ND_PRINT("\n\t\tMessy oper TLV header, type (0x%x)\n\t\texcess of %u Bytes ",
1537 		          GET_BE_U_2(otlv->type),
1538 		          rlen - GET_BE_U_2(otlv->length));
1539 		return -1;
1540 	}
1541 
1542 	return 0;
1543 
1544 trunc:
1545 	nd_print_trunc(ndo);
1546 	return -1;
1547 }
1548 
1549 static int
forces_type_print(netdissect_options * ndo,const u_char * pptr,const struct forcesh * fhdr _U_,u_int mlen,const struct tom_h * tops)1550 forces_type_print(netdissect_options *ndo,
1551                   const u_char * pptr, const struct forcesh *fhdr _U_,
1552                   u_int mlen, const struct tom_h *tops)
1553 {
1554 	const struct forces_tlv *tltlv;
1555 	u_int rlen;
1556 	u_int invtlv;
1557 	int rc = 0;
1558 	u_int ttlv = 0;
1559 
1560 	/*
1561 	 * forces_print() has already checked that mlen >= ForCES_HDRL
1562 	 * by calling ForCES_HLN_VALID().
1563 	 */
1564 	rlen = mlen - ForCES_HDRL;
1565 
1566 	if (rlen > TLV_HLN) {
1567 		if (tops->flags & ZERO_TTLV) {
1568 			ND_PRINT("<0x%x>Illegal Top level TLV!\n", tops->flags);
1569 			return -1;
1570 		}
1571 	} else {
1572 		if (tops->flags & ZERO_MORE_TTLV)
1573 			return 0;
1574 		if (tops->flags & ONE_MORE_TTLV) {
1575 			ND_PRINT("\tTop level TLV Data missing!\n");
1576 			return -1;
1577 		}
1578 	}
1579 
1580 	if (tops->flags & ZERO_TTLV) {
1581 		return 0;
1582 	}
1583 
1584 	ttlv = tops->flags >> 4;
1585 	tltlv = GET_TOP_TLV(pptr);
1586 
1587 	/*XXX: 15 top level tlvs will probably be fine
1588 	   You are nuts if you send more ;-> */
1589 	while (rlen != 0) {
1590 		uint16_t type, tlvl;
1591 
1592 		type = GET_BE_U_2(tltlv->type);
1593 		tlvl = GET_BE_U_2(tltlv->length);
1594 		invtlv = tlv_valid(tlvl, rlen);
1595 		if (invtlv)
1596 			break;
1597 
1598 		/*
1599 		 * At this point, tlv_valid() has ensured that the TLV
1600 		 * length is large enough but not too large (it doesn't
1601 		 * go past the end of the packet).
1602 		 */
1603 		if (!ttlv_valid(type)) {
1604 			ND_PRINT("\n\tInvalid ForCES Top TLV type=0x%x",
1605 			       type);
1606 			return -1;
1607 		}
1608 
1609 		if (ndo->ndo_vflag >= 3)
1610 			ND_PRINT("\t%s, length %u (data length %u Bytes)",
1611 			       tok2str(ForCES_TLV, NULL, type),
1612 			       tlvl,
1613 			       tlvl - TLV_HDRL);
1614 
1615 		rc = tops->print(ndo, (const u_char *) TLV_DATA(tltlv),
1616 				 tlvl,
1617 				 tops->op_msk, 9);
1618 		if (rc < 0) {
1619 			return -1;
1620 		}
1621 		tltlv = GO_NXT_TLV(tltlv, rlen);
1622 		ttlv--;
1623 		if (ttlv <= 0)
1624 			break;
1625 	}
1626 	/*
1627 	 * XXX - if ttlv != 0, does that mean that the packet was too
1628 	 * short, and didn't have *enough* TLVs in it?
1629 	 */
1630 	if (rlen) {
1631 		ND_PRINT("\tMess TopTLV header: min %u, total %u advertised %u ",
1632 		       TLV_HDRL, rlen, GET_BE_U_2(tltlv->length));
1633 		return -1;
1634 	}
1635 
1636 	return 0;
1637 }
1638 
1639 void
forces_print(netdissect_options * ndo,const u_char * pptr,u_int len)1640 forces_print(netdissect_options *ndo,
1641              const u_char * pptr, u_int len)
1642 {
1643 	const struct forcesh *fhdr;
1644 	u_int mlen;
1645 	uint32_t flg_raw;
1646 	uint8_t tom;
1647 	const struct tom_h *tops;
1648 	int rc = 0;
1649 
1650 	ndo->ndo_protocol = "forces";
1651 	fhdr = (const struct forcesh *)pptr;
1652 	ND_TCHECK_SIZE(fhdr);
1653 	tom = GET_U_1(fhdr->fm_tom);
1654 	if (!tom_valid(tom)) {
1655 		ND_PRINT("Invalid ForCES message type %u\n", tom);
1656 		goto error;
1657 	}
1658 
1659 	mlen = ForCES_BLN(fhdr);
1660 
1661 	tops = get_forces_tom(tom);
1662 	if (tops->v == TOM_RSVD) {
1663 		ND_PRINT("\n\tUnknown ForCES message type=0x%x", tom);
1664 		goto error;
1665 	}
1666 
1667 	ND_PRINT("\n\tForCES %s ", tops->s);
1668 	if (!ForCES_HLN_VALID(mlen, len)) {
1669 		ND_PRINT("Illegal ForCES pkt len - min %u, total recvd %u, advertised %u ",
1670 		          ForCES_HDRL, len, ForCES_BLN(fhdr));
1671 		goto error;
1672 	}
1673 
1674 	flg_raw = GET_BE_U_4(pptr + 20);
1675 	if (ndo->ndo_vflag >= 1) {
1676 		ND_PRINT("\n\tForCES Version %u len %uB flags 0x%08x ",
1677 		       ForCES_V(fhdr), mlen, flg_raw);
1678 		ND_PRINT("\n\tSrcID 0x%x(%s) DstID 0x%x(%s) Correlator 0x%" PRIx64,
1679 		       ForCES_SID(fhdr), ForCES_node(ForCES_SID(fhdr)),
1680 		       ForCES_DID(fhdr), ForCES_node(ForCES_DID(fhdr)),
1681 		       GET_BE_U_8(fhdr->fm_cor));
1682 
1683 	}
1684 	if (ndo->ndo_vflag >= 2) {
1685 		ND_PRINT("\n\tForCES flags:\n\t  %s(0x%x), prio=%u, %s(0x%x),\n\t  %s(0x%x), %s(0x%x)\n",
1686 		     tok2str(ForCES_ACKs, "ACKUnknown", ForCES_ACK(fhdr)),
1687 		     ForCES_ACK(fhdr),
1688 		     ForCES_PRI(fhdr),
1689 		     tok2str(ForCES_EMs, "EMUnknown", ForCES_EM(fhdr)),
1690 		     ForCES_EM(fhdr),
1691 		     tok2str(ForCES_ATs, "ATUnknown", ForCES_AT(fhdr)),
1692 		     ForCES_AT(fhdr),
1693 		     tok2str(ForCES_TPs, "TPUnknown", ForCES_TP(fhdr)),
1694 		     ForCES_TP(fhdr));
1695 		ND_PRINT("\t  Extra flags: rsv(b5-7) 0x%x rsv(b13-31) 0x%x\n",
1696 		     ForCES_RS1(fhdr), ForCES_RS2(fhdr));
1697 	}
1698 	rc = forces_type_print(ndo, pptr, fhdr, mlen, tops);
1699 	if (rc < 0) {
1700 error:
1701 		hex_print(ndo, "\n\t[", pptr, len);
1702 		ND_PRINT("\n\t]");
1703 		return;
1704 	}
1705 
1706 	if (ndo->ndo_vflag >= 4) {
1707 		ND_PRINT("\n\t  Raw ForCES message\n\t [");
1708 		hex_print(ndo, "\n\t ", pptr, len);
1709 		ND_PRINT("\n\t ]");
1710 	}
1711 	return;
1712 
1713 trunc:
1714 	nd_print_trunc(ndo);
1715 }
1716