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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
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 *
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 /* http://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 *
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 *
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
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
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) ( ((len)+ForCES_ALNL-1) & ~(ForCES_ALNL-1) )
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
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
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 *
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
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
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 *
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
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
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_with_offset(ndo, ib, tdp, rlen, 0);
714 ND_PRINT("\n%s]\n", ib + 1);
715 }
716 return 0;
717
718 trunc:
719 nd_print_trunc(ndo);
720 return -1;
721 }
722
723 static int
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 ND_TCHECK_SIZE(ilv);
745 invilv = ilv_valid(ndo, ilv, rlen);
746 if (invilv) {
747 ND_PRINT("%s[", ib + 1);
748 hex_print_with_offset(ndo, ib, tdp, rlen, 0);
749 ND_PRINT("\n%s]\n", ib + 1);
750 return -1;
751 }
752 if (ndo->ndo_vflag >= 3) {
753 u_int ilvl = GET_BE_U_4(ilv->length);
754 ND_PRINT("\n%s ILV: type %x length %u\n", ib + 1,
755 GET_BE_U_4(ilv->type), ilvl);
756 hex_print_with_offset(ndo, "\t\t[", tdp, ilvl-ILV_HDRL, 0);
757 }
758
759 ilv = GO_NXT_ILV(ilv, rlen);
760 }
761
762 return 0;
763
764 trunc:
765 nd_print_trunc(ndo);
766 return -1;
767 }
768
769 static int
770 sdatatlv_print(netdissect_options *ndo,
771 const u_char * pptr, u_int len,
772 uint16_t op_msk, int indent)
773 {
774 const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
775 u_int rlen;
776 const u_char *tdp = (const u_char *) TLV_DATA(tlv);
777 uint16_t type;
778
779 /*
780 * pdatacnt_print() has ensured that len (the TLV length)
781 * >= TLV_HDRL.
782 */
783 rlen = len - TLV_HDRL;
784 ND_TCHECK_SIZE(tlv);
785 type = GET_BE_U_2(tlv->type);
786 if (type != F_TLV_SPAD) {
787 ND_PRINT("Error: expecting SPARSEDATA!\n");
788 return -1;
789 }
790
791 return sdatailv_print(ndo, tdp, rlen, op_msk, indent);
792
793 trunc:
794 nd_print_trunc(ndo);
795 return -1;
796 }
797
798 static int
799 pkeyitlv_print(netdissect_options *ndo,
800 const u_char * pptr, u_int len,
801 uint16_t op_msk, int indent)
802 {
803 const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
804 const u_char *tdp = (const u_char *) TLV_DATA(tlv);
805 const u_char *dp = tdp + 4;
806 const struct forces_tlv *kdtlv = (const struct forces_tlv *)dp;
807 uint32_t id;
808 char *ib = indent_pr(indent, 0);
809 uint16_t type, tll;
810 u_int invtlv;
811
812 ND_TCHECK_1(tdp);
813 id = GET_BE_U_4(tdp);
814 ND_PRINT("%sKeyinfo: Key 0x%x\n", ib, id);
815 ND_TCHECK_SIZE(kdtlv);
816 type = GET_BE_U_2(kdtlv->type);
817 tll = GET_BE_U_2(kdtlv->length);
818 invtlv = tlv_valid(tll, len);
819
820 if (invtlv) {
821 ND_PRINT("%s TLV type 0x%x len %u\n",
822 tok2str(ForCES_TLV_err, NULL, invtlv), type,
823 tll);
824 return -1;
825 }
826 /*
827 * At this point, tlv_valid() has ensured that the TLV
828 * length is large enough but not too large (it doesn't
829 * go past the end of the containing TLV).
830 */
831 tll = GET_BE_U_2(kdtlv->length);
832 dp = (const u_char *) TLV_DATA(kdtlv);
833 return fdatatlv_print(ndo, dp, tll, op_msk, indent);
834
835 trunc:
836 nd_print_trunc(ndo);
837 return -1;
838 }
839
840 #define PTH_DESC_SIZE 12
841
842 static int
843 pdatacnt_print(netdissect_options *ndo,
844 const u_char * pptr, u_int len,
845 uint16_t IDcnt, uint16_t op_msk, int indent)
846 {
847 u_int i;
848 uint32_t id;
849 char *ib = indent_pr(indent, 0);
850
851 if ((op_msk & B_APPND) && ndo->ndo_vflag >= 3) {
852 ND_PRINT("%sTABLE APPEND\n", ib);
853 }
854 for (i = 0; i < IDcnt; i++) {
855 ND_TCHECK_4(pptr);
856 if (len < 4)
857 goto trunc;
858 id = GET_BE_U_4(pptr);
859 if (ndo->ndo_vflag >= 3)
860 ND_PRINT("%sID#%02u: %u\n", ib, i + 1, id);
861 len -= 4;
862 pptr += 4;
863 }
864
865 if ((op_msk & B_TRNG) || (op_msk & B_KEYIN)) {
866 if (op_msk & B_TRNG) {
867 uint32_t starti, endi;
868
869 if (len < PTH_DESC_SIZE) {
870 ND_PRINT("pathlength %u with key/range too short %u\n",
871 len, PTH_DESC_SIZE);
872 return -1;
873 }
874
875 pptr += sizeof(struct forces_tlv);
876 len -= sizeof(struct forces_tlv);
877
878 starti = GET_BE_U_4(pptr);
879 pptr += 4;
880 len -= 4;
881
882 endi = GET_BE_U_4(pptr);
883 pptr += 4;
884 len -= 4;
885
886 if (ndo->ndo_vflag >= 3)
887 ND_PRINT("%sTable range: [%u,%u]\n", ib, starti, endi);
888 }
889
890 if (op_msk & B_KEYIN) {
891 const struct forces_tlv *keytlv;
892 uint16_t tll;
893
894 if (len < PTH_DESC_SIZE) {
895 ND_PRINT("pathlength %u with key/range too short %u\n",
896 len, PTH_DESC_SIZE);
897 return -1;
898 }
899
900 /* skip keyid */
901 pptr += 4;
902 len -= 4;
903 keytlv = (const struct forces_tlv *)pptr;
904 /* skip header */
905 pptr += sizeof(struct forces_tlv);
906 len -= sizeof(struct forces_tlv);
907 /* skip key content */
908 tll = GET_BE_U_2(keytlv->length);
909 if (tll < TLV_HDRL) {
910 ND_PRINT("key content length %u < %u\n",
911 tll, TLV_HDRL);
912 return -1;
913 }
914 tll -= TLV_HDRL;
915 if (len < tll) {
916 ND_PRINT("key content too short\n");
917 return -1;
918 }
919 pptr += tll;
920 len -= tll;
921 }
922
923 }
924
925 if (len) {
926 const struct forces_tlv *pdtlv = (const struct forces_tlv *)pptr;
927 uint16_t type;
928 uint16_t tlvl, tll;
929 u_int pad = 0;
930 u_int aln;
931 u_int invtlv;
932
933 ND_TCHECK_SIZE(pdtlv);
934 type = GET_BE_U_2(pdtlv->type);
935 tlvl = GET_BE_U_2(pdtlv->length);
936 invtlv = tlv_valid(tlvl, len);
937 if (invtlv) {
938 ND_PRINT("%s Outstanding bytes %u for TLV type 0x%x TLV len %u\n",
939 tok2str(ForCES_TLV_err, NULL, invtlv), len, type,
940 tlvl);
941 goto pd_err;
942 }
943 /*
944 * At this point, tlv_valid() has ensured that the TLV
945 * length is large enough but not too large (it doesn't
946 * go past the end of the containing TLV).
947 */
948 tll = tlvl - TLV_HDRL;
949 aln = F_ALN_LEN(tlvl);
950 if (aln > tlvl) {
951 if (aln > len) {
952 ND_PRINT("Invalid padded pathdata TLV type 0x%x len %u missing %u pad bytes\n",
953 type, tlvl, aln - len);
954 } else {
955 pad = aln - tlvl;
956 }
957 }
958 if (pd_valid(type)) {
959 const struct pdata_ops *ops = get_forces_pd(type);
960
961 if (ndo->ndo_vflag >= 3 && ops->v != F_TLV_PDAT) {
962 if (pad)
963 ND_PRINT("%s %s (Length %u DataLen %u pad %u Bytes)\n",
964 ib, ops->s, tlvl, tll, pad);
965 else
966 ND_PRINT("%s %s (Length %u DataLen %u Bytes)\n",
967 ib, ops->s, tlvl, tll);
968 }
969
970 chk_op_type(ndo, type, op_msk, ops->op_msk);
971
972 if (ops->print(ndo, (const u_char *)pdtlv,
973 tll + pad + TLV_HDRL, op_msk,
974 indent + 2) == -1)
975 return -1;
976 len -= (TLV_HDRL + pad + tll);
977 } else {
978 ND_PRINT("Invalid path data content type 0x%x len %u\n",
979 type, tlvl);
980 pd_err:
981 if (tlvl) {
982 hex_print_with_offset(ndo, "Bad Data val\n\t [",
983 pptr, len, 0);
984 ND_PRINT("]\n");
985
986 return -1;
987 }
988 }
989 }
990 return len;
991
992 trunc:
993 nd_print_trunc(ndo);
994 return -1;
995 }
996
997 static int
998 pdata_print(netdissect_options *ndo,
999 const u_char * pptr, u_int len,
1000 uint16_t op_msk, int indent)
1001 {
1002 const struct pathdata_h *pdh = (const struct pathdata_h *)pptr;
1003 char *ib = indent_pr(indent, 0);
1004 u_int minsize = 0;
1005 int more_pd = 0;
1006 uint16_t idcnt = 0;
1007
1008 ND_TCHECK_SIZE(pdh);
1009 if (len < sizeof(struct pathdata_h))
1010 goto trunc;
1011 if (ndo->ndo_vflag >= 3) {
1012 ND_PRINT("\n%sPathdata: Flags 0x%x ID count %u\n",
1013 ib, GET_BE_U_2(pdh->pflags),
1014 GET_BE_U_2(pdh->pIDcnt));
1015 }
1016
1017 if (GET_BE_U_2(pdh->pflags) & F_SELKEY) {
1018 op_msk |= B_KEYIN;
1019 }
1020
1021 /* Table GET Range operation */
1022 if (GET_BE_U_2(pdh->pflags) & F_SELTABRANGE) {
1023 op_msk |= B_TRNG;
1024 }
1025 /* Table SET append operation */
1026 if (GET_BE_U_2(pdh->pflags) & F_TABAPPEND) {
1027 op_msk |= B_APPND;
1028 }
1029
1030 pptr += sizeof(struct pathdata_h);
1031 len -= sizeof(struct pathdata_h);
1032 idcnt = GET_BE_U_2(pdh->pIDcnt);
1033 minsize = idcnt * 4;
1034 if (len < minsize) {
1035 ND_PRINT("\t\t\ttruncated IDs expected %uB got %uB\n", minsize,
1036 len);
1037 hex_print_with_offset(ndo, "\t\t\tID Data[", pptr, len, 0);
1038 ND_PRINT("]\n");
1039 return -1;
1040 }
1041
1042 if ((op_msk & B_TRNG) && (op_msk & B_KEYIN)) {
1043 ND_PRINT("\t\t\tIllegal to have both Table ranges and keys\n");
1044 return -1;
1045 }
1046
1047 more_pd = pdatacnt_print(ndo, pptr, len, idcnt, op_msk, indent);
1048 if (more_pd > 0) {
1049 int consumed = len - more_pd;
1050 pptr += consumed;
1051 len = more_pd;
1052 /* XXX: Argh, recurse some more */
1053 return recpdoptlv_print(ndo, pptr, len, op_msk, indent+1);
1054 } else
1055 return 0;
1056
1057 trunc:
1058 nd_print_trunc(ndo);
1059 return -1;
1060 }
1061
1062 static int
1063 genoptlv_print(netdissect_options *ndo,
1064 const u_char * pptr, u_int len,
1065 uint16_t op_msk, int indent)
1066 {
1067 const struct forces_tlv *pdtlv = (const struct forces_tlv *)pptr;
1068 uint16_t type;
1069 u_int tlvl;
1070 u_int invtlv;
1071 char *ib = indent_pr(indent, 0);
1072
1073 ND_TCHECK_SIZE(pdtlv);
1074 type = GET_BE_U_2(pdtlv->type);
1075 tlvl = GET_BE_U_2(pdtlv->length);
1076 invtlv = tlv_valid(tlvl, len);
1077 ND_PRINT("genoptlvprint - %s TLV type 0x%x len %u\n",
1078 tok2str(ForCES_TLV, NULL, type), type, tlvl);
1079 if (!invtlv) {
1080 /*
1081 * At this point, tlv_valid() has ensured that the TLV
1082 * length is large enough but not too large (it doesn't
1083 * go past the end of the containing TLV).
1084 */
1085 const u_char *dp = (const u_char *) TLV_DATA(pdtlv);
1086
1087 if (!ttlv_valid(type)) {
1088 ND_PRINT("%s TLV type 0x%x len %u\n",
1089 tok2str(ForCES_TLV_err, NULL, invtlv), type,
1090 tlvl);
1091 return -1;
1092 }
1093 if (ndo->ndo_vflag >= 3)
1094 ND_PRINT("%s%s, length %u (data length %u Bytes)",
1095 ib, tok2str(ForCES_TLV, NULL, type),
1096 tlvl, tlvl - TLV_HDRL);
1097
1098 return pdata_print(ndo, dp, tlvl - TLV_HDRL, op_msk, indent + 1);
1099 } else {
1100 ND_PRINT("\t\t\tInvalid ForCES TLV type=%x", type);
1101 return -1;
1102 }
1103
1104 trunc:
1105 nd_print_trunc(ndo);
1106 return -1;
1107 }
1108
1109 static int
1110 recpdoptlv_print(netdissect_options *ndo,
1111 const u_char * pptr, u_int len,
1112 uint16_t op_msk, int indent)
1113 {
1114 const struct forces_tlv *pdtlv = (const struct forces_tlv *)pptr;
1115
1116 while (len != 0) {
1117 uint16_t type, tlvl;
1118 u_int invtlv;
1119 char *ib;
1120 const u_char *dp;
1121
1122 ND_TCHECK_SIZE(pdtlv);
1123 tlvl = GET_BE_U_2(pdtlv->length);
1124 invtlv = tlv_valid(tlvl, len);
1125 if (invtlv) {
1126 break;
1127 }
1128
1129 /*
1130 * At this point, tlv_valid() has ensured that the TLV
1131 * length is large enough but not too large (it doesn't
1132 * go past the end of the containing TLV).
1133 */
1134 ib = indent_pr(indent, 0);
1135 type = GET_BE_U_2(pdtlv->type);
1136 dp = (const u_char *) TLV_DATA(pdtlv);
1137
1138 if (ndo->ndo_vflag >= 3)
1139 ND_PRINT("%s%s, length %u (data encapsulated %u Bytes)",
1140 ib, tok2str(ForCES_TLV, NULL, type),
1141 tlvl,
1142 tlvl - TLV_HDRL);
1143
1144 if (pdata_print(ndo, dp, tlvl - TLV_HDRL, op_msk, indent + 1) == -1)
1145 return -1;
1146 pdtlv = GO_NXT_TLV(pdtlv, len);
1147 }
1148
1149 if (len) {
1150 ND_PRINT("\n\t\tMessy PATHDATA TLV header, type (0x%x)\n\t\texcess of %u Bytes ",
1151 GET_BE_U_2(pdtlv->type),
1152 len - GET_BE_U_2(pdtlv->length));
1153 return -1;
1154 }
1155
1156 return 0;
1157
1158 trunc:
1159 nd_print_trunc(ndo);
1160 return -1;
1161 }
1162
1163 static int
1164 invoptlv_print(netdissect_options *ndo,
1165 const u_char * pptr, u_int len,
1166 uint16_t op_msk _U_, int indent)
1167 {
1168 char *ib = indent_pr(indent, 1);
1169
1170 if (ndo->ndo_vflag >= 3) {
1171 ND_PRINT("%sData[", ib + 1);
1172 hex_print_with_offset(ndo, ib, pptr, len, 0);
1173 ND_PRINT("%s]\n", ib);
1174 }
1175 return -1;
1176 }
1177
1178 static int
1179 otlv_print(netdissect_options *ndo,
1180 const struct forces_tlv *otlv, uint16_t op_msk _U_, int indent)
1181 {
1182 int rc = 0;
1183 const u_char *dp = (const u_char *) TLV_DATA(otlv);
1184 uint16_t type;
1185 u_int tll;
1186 char *ib = indent_pr(indent, 0);
1187 const struct optlv_h *ops;
1188
1189 /*
1190 * lfbselect_print() has ensured that GET_BE_U_2(otlv->length)
1191 * >= TLV_HDRL.
1192 */
1193 ND_TCHECK_SIZE(otlv);
1194 type = GET_BE_U_2(otlv->type);
1195 tll = GET_BE_U_2(otlv->length) - TLV_HDRL;
1196 ops = get_forces_optlv_h(type);
1197 if (ndo->ndo_vflag >= 3) {
1198 ND_PRINT("%sOper TLV %s(0x%x) length %u\n", ib, ops->s, type,
1199 GET_BE_U_2(otlv->length));
1200 }
1201 /* rest of ops must at least have 12B {pathinfo} */
1202 if (tll < OP_MIN_SIZ) {
1203 ND_PRINT("\t\tOper TLV %s(0x%x) length %u\n", ops->s, type,
1204 GET_BE_U_2(otlv->length));
1205 ND_PRINT("\t\tTruncated data size %u minimum required %u\n", tll,
1206 OP_MIN_SIZ);
1207 return invoptlv_print(ndo, dp, tll, ops->op_msk, indent);
1208
1209 }
1210
1211 /* XXX - do anything with ops->flags? */
1212 if(ops->print) {
1213 rc = ops->print(ndo, dp, tll, ops->op_msk, indent + 1);
1214 }
1215 return rc;
1216
1217 trunc:
1218 nd_print_trunc(ndo);
1219 return -1;
1220 }
1221
1222 #define ASTDLN 4
1223 #define ASTMCD 255
1224 static int
1225 asttlv_print(netdissect_options *ndo,
1226 const u_char * pptr, u_int len,
1227 uint16_t op_msk _U_, int indent)
1228 {
1229 uint32_t rescode;
1230 u_int dlen;
1231 char *ib = indent_pr(indent, 0);
1232
1233 /*
1234 * forces_type_print() has ensured that len (the TLV length)
1235 * >= TLV_HDRL.
1236 */
1237 dlen = len - TLV_HDRL;
1238 if (dlen != ASTDLN) {
1239 ND_PRINT("illegal ASTresult-TLV: %u bytes!\n", dlen);
1240 return -1;
1241 }
1242 ND_TCHECK_4(pptr);
1243 rescode = GET_BE_U_4(pptr);
1244 if (rescode > ASTMCD) {
1245 ND_PRINT("illegal ASTresult result code: %u!\n", rescode);
1246 return -1;
1247 }
1248
1249 if (ndo->ndo_vflag >= 3) {
1250 ND_PRINT("Teardown reason:\n%s", ib);
1251 switch (rescode) {
1252 case 0:
1253 ND_PRINT("Normal Teardown");
1254 break;
1255 case 1:
1256 ND_PRINT("Loss of Heartbeats");
1257 break;
1258 case 2:
1259 ND_PRINT("Out of bandwidth");
1260 break;
1261 case 3:
1262 ND_PRINT("Out of Memory");
1263 break;
1264 case 4:
1265 ND_PRINT("Application Crash");
1266 break;
1267 default:
1268 ND_PRINT("Unknown Teardown reason");
1269 break;
1270 }
1271 ND_PRINT("(%x)\n%s", rescode, ib);
1272 }
1273 return 0;
1274
1275 trunc:
1276 nd_print_trunc(ndo);
1277 return -1;
1278 }
1279
1280 #define ASRDLN 4
1281 #define ASRMCD 3
1282 static int
1283 asrtlv_print(netdissect_options *ndo,
1284 const u_char * pptr, u_int len,
1285 uint16_t op_msk _U_, int indent)
1286 {
1287 uint32_t rescode;
1288 u_int dlen;
1289 char *ib = indent_pr(indent, 0);
1290
1291 /*
1292 * forces_type_print() has ensured that len (the TLV length)
1293 * >= TLV_HDRL.
1294 */
1295 dlen = len - TLV_HDRL;
1296 if (dlen != ASRDLN) { /* id, instance, oper tlv */
1297 ND_PRINT("illegal ASRresult-TLV: %u bytes!\n", dlen);
1298 return -1;
1299 }
1300 ND_TCHECK_4(pptr);
1301 rescode = GET_BE_U_4(pptr);
1302
1303 if (rescode > ASRMCD) {
1304 ND_PRINT("illegal ASRresult result code: %u!\n", rescode);
1305 return -1;
1306 }
1307
1308 if (ndo->ndo_vflag >= 3) {
1309 ND_PRINT("\n%s", ib);
1310 switch (rescode) {
1311 case 0:
1312 ND_PRINT("Success ");
1313 break;
1314 case 1:
1315 ND_PRINT("FE ID invalid ");
1316 break;
1317 case 2:
1318 ND_PRINT("permission denied ");
1319 break;
1320 default:
1321 ND_PRINT("Unknown ");
1322 break;
1323 }
1324 ND_PRINT("(%x)\n%s", rescode, ib);
1325 }
1326 return 0;
1327
1328 trunc:
1329 nd_print_trunc(ndo);
1330 return -1;
1331 }
1332
1333 #if 0
1334 /*
1335 * XXX - not used.
1336 */
1337 static int
1338 gentltlv_print(netdissect_options *ndo,
1339 const u_char * pptr _U_, u_int len,
1340 uint16_t op_msk _U_, int indent _U_)
1341 {
1342 u_int dlen = len - TLV_HDRL;
1343
1344 if (dlen < 4) { /* at least 32 bits must exist */
1345 ND_PRINT("truncated TLV: %u bytes missing! ", 4 - dlen);
1346 return -1;
1347 }
1348 return 0;
1349 }
1350 #endif
1351
1352 #define RD_MIN 8
1353
1354 static int
1355 print_metailv(netdissect_options *ndo,
1356 const u_char * pptr, uint16_t op_msk _U_, int indent)
1357 {
1358 u_int rlen;
1359 char *ib = indent_pr(indent, 0);
1360 /* XXX: check header length */
1361 const struct forces_ilv *ilv = (const struct forces_ilv *)pptr;
1362
1363 /*
1364 * print_metatlv() has ensured that len (what remains in the
1365 * ILV) >= ILV_HDRL.
1366 */
1367 rlen = GET_BE_U_4(ilv->length) - ILV_HDRL;
1368 ND_TCHECK_SIZE(ilv);
1369 ND_PRINT("%sMetaID 0x%x length %u\n", ib, GET_BE_U_4(ilv->type),
1370 GET_BE_U_4(ilv->length));
1371 if (ndo->ndo_vflag >= 3) {
1372 hex_print_with_offset(ndo, "\t\t[", ILV_DATA(ilv), rlen, 0);
1373 ND_PRINT(" ]\n");
1374 }
1375 return 0;
1376
1377 trunc:
1378 nd_print_trunc(ndo);
1379 return -1;
1380 }
1381
1382 static int
1383 print_metatlv(netdissect_options *ndo,
1384 const u_char * pptr, u_int len,
1385 uint16_t op_msk _U_, int indent)
1386 {
1387 u_int dlen;
1388 char *ib = indent_pr(indent, 0);
1389 u_int rlen;
1390 const struct forces_ilv *ilv = (const struct forces_ilv *)pptr;
1391 int invilv;
1392
1393 /*
1394 * redirect_print() has ensured that len (what remains in the
1395 * TLV) >= TLV_HDRL.
1396 */
1397 dlen = len - TLV_HDRL;
1398 rlen = dlen;
1399 ND_PRINT("\n%s METADATA length %u\n", ib, rlen);
1400 while (rlen != 0) {
1401 ND_TCHECK_SIZE(ilv);
1402 invilv = ilv_valid(ndo, ilv, rlen);
1403 if (invilv) {
1404 break;
1405 }
1406
1407 /*
1408 * At this point, ilv_valid() has ensured that the ILV
1409 * length is large enough but not too large (it doesn't
1410 * go past the end of the containing TLV).
1411 */
1412 print_metailv(ndo, (const u_char *) ilv, 0, indent + 1);
1413 ilv = GO_NXT_ILV(ilv, rlen);
1414 }
1415
1416 return 0;
1417
1418 trunc:
1419 nd_print_trunc(ndo);
1420 return -1;
1421 }
1422
1423
1424 static int
1425 print_reddata(netdissect_options *ndo,
1426 const u_char * pptr, u_int len,
1427 uint16_t op_msk _U_, int indent)
1428 {
1429 u_int dlen;
1430 char *ib = indent_pr(indent, 0);
1431 u_int rlen;
1432
1433 dlen = len - TLV_HDRL;
1434 rlen = dlen;
1435 ND_PRINT("\n%s Redirect Data length %u\n", ib, rlen);
1436
1437 if (ndo->ndo_vflag >= 3) {
1438 ND_PRINT("\t\t[");
1439 hex_print_with_offset(ndo, "\n\t\t", pptr, rlen, 0);
1440 ND_PRINT("\n\t\t]");
1441 }
1442
1443 return 0;
1444 }
1445
1446 static int
1447 redirect_print(netdissect_options *ndo,
1448 const u_char * pptr, u_int len,
1449 uint16_t op_msk _U_, int indent)
1450 {
1451 const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
1452 u_int dlen;
1453 u_int rlen;
1454 u_int invtlv;
1455
1456 /*
1457 * forces_type_print() has ensured that len (the TLV length)
1458 * >= TLV_HDRL.
1459 */
1460 dlen = len - TLV_HDRL;
1461 if (dlen <= RD_MIN) {
1462 ND_PRINT("\n\t\ttruncated Redirect TLV: %u bytes missing! ",
1463 RD_MIN - dlen);
1464 return -1;
1465 }
1466
1467 rlen = dlen;
1468 indent += 1;
1469 while (rlen != 0) {
1470 uint16_t type, tlvl;
1471
1472 ND_TCHECK_SIZE(tlv);
1473 type = GET_BE_U_2(tlv->type);
1474 tlvl = GET_BE_U_2(tlv->length);
1475 invtlv = tlv_valid(tlvl, rlen);
1476 if (invtlv) {
1477 ND_PRINT("Bad Redirect data\n");
1478 break;
1479 }
1480
1481 /*
1482 * At this point, tlv_valid() has ensured that the TLV
1483 * length is large enough but not too large (it doesn't
1484 * go past the end of the containing TLV).
1485 */
1486 if (type == F_TLV_METD) {
1487 print_metatlv(ndo, (const u_char *) TLV_DATA(tlv),
1488 tlvl, 0,
1489 indent);
1490 } else if (type == F_TLV_REDD) {
1491 print_reddata(ndo, (const u_char *) TLV_DATA(tlv),
1492 tlvl, 0,
1493 indent);
1494 } else {
1495 ND_PRINT("Unknown REDIRECT TLV 0x%x len %u\n",
1496 type,
1497 tlvl);
1498 }
1499
1500 tlv = GO_NXT_TLV(tlv, rlen);
1501 }
1502
1503 if (rlen) {
1504 ND_PRINT("\n\t\tMessy Redirect TLV header, type (0x%x)\n\t\texcess of %u Bytes ",
1505 GET_BE_U_2(tlv->type),
1506 rlen - GET_BE_U_2(tlv->length));
1507 return -1;
1508 }
1509
1510 return 0;
1511
1512 trunc:
1513 nd_print_trunc(ndo);
1514 return -1;
1515 }
1516
1517 #define OP_OFF 8
1518 #define OP_MIN 12
1519
1520 static int
1521 lfbselect_print(netdissect_options *ndo,
1522 const u_char * pptr, u_int len,
1523 uint16_t op_msk, int indent)
1524 {
1525 const struct forces_lfbsh *lfbs;
1526 const struct forces_tlv *otlv;
1527 char *ib = indent_pr(indent, 0);
1528 u_int dlen;
1529 u_int rlen;
1530 u_int invtlv;
1531
1532 /*
1533 * forces_type_print() has ensured that len (the TLV length)
1534 * >= TLV_HDRL.
1535 */
1536 dlen = len - TLV_HDRL;
1537 if (dlen <= OP_MIN) { /* id, instance, oper tlv header .. */
1538 ND_PRINT("\n\t\ttruncated lfb selector: %u bytes missing! ",
1539 OP_MIN - dlen);
1540 return -1;
1541 }
1542
1543 /*
1544 * At this point, we know that dlen > OP_MIN; OP_OFF < OP_MIN, so
1545 * we also know that it's > OP_OFF.
1546 */
1547 rlen = dlen - OP_OFF;
1548
1549 lfbs = (const struct forces_lfbsh *)pptr;
1550 ND_TCHECK_SIZE(lfbs);
1551 if (ndo->ndo_vflag >= 3) {
1552 ND_PRINT("\n%s%s(Classid %x) instance %x\n",
1553 ib,
1554 tok2str(ForCES_LFBs, NULL, GET_BE_U_4(lfbs->class)),
1555 GET_BE_U_4(lfbs->class),
1556 GET_BE_U_4(lfbs->instance));
1557 }
1558
1559 otlv = (const struct forces_tlv *)(lfbs + 1);
1560
1561 indent += 1;
1562 while (rlen != 0) {
1563 uint16_t type, tlvl;
1564
1565 ND_TCHECK_SIZE(otlv);
1566 type = GET_BE_U_2(otlv->type);
1567 tlvl = GET_BE_U_2(otlv->length);
1568 invtlv = tlv_valid(tlvl, rlen);
1569 if (invtlv)
1570 break;
1571
1572 /*
1573 * At this point, tlv_valid() has ensured that the TLV
1574 * length is large enough but not too large (it doesn't
1575 * go past the end of the containing TLV).
1576 */
1577 if (op_valid(type, op_msk)) {
1578 otlv_print(ndo, otlv, 0, indent);
1579 } else {
1580 if (ndo->ndo_vflag < 3)
1581 ND_PRINT("\n");
1582 ND_PRINT("\t\tINValid oper-TLV type 0x%x length %u for this ForCES message\n",
1583 type, tlvl);
1584 invoptlv_print(ndo, (const u_char *)otlv, rlen, 0, indent);
1585 }
1586 otlv = GO_NXT_TLV(otlv, rlen);
1587 }
1588
1589 if (rlen) {
1590 ND_PRINT("\n\t\tMessy oper TLV header, type (0x%x)\n\t\texcess of %u Bytes ",
1591 GET_BE_U_2(otlv->type),
1592 rlen - GET_BE_U_2(otlv->length));
1593 return -1;
1594 }
1595
1596 return 0;
1597
1598 trunc:
1599 nd_print_trunc(ndo);
1600 return -1;
1601 }
1602
1603 static int
1604 forces_type_print(netdissect_options *ndo,
1605 const u_char * pptr, const struct forcesh *fhdr _U_,
1606 u_int mlen, const struct tom_h *tops)
1607 {
1608 const struct forces_tlv *tltlv;
1609 u_int rlen;
1610 u_int invtlv;
1611 int rc = 0;
1612 u_int ttlv = 0;
1613
1614 /*
1615 * forces_print() has already checked that mlen >= ForCES_HDRL
1616 * by calling ForCES_HLN_VALID().
1617 */
1618 rlen = mlen - ForCES_HDRL;
1619
1620 if (rlen > TLV_HLN) {
1621 if (tops->flags & ZERO_TTLV) {
1622 ND_PRINT("<0x%x>Illegal Top level TLV!\n", tops->flags);
1623 return -1;
1624 }
1625 } else {
1626 if (tops->flags & ZERO_MORE_TTLV)
1627 return 0;
1628 if (tops->flags & ONE_MORE_TTLV) {
1629 ND_PRINT("\tTop level TLV Data missing!\n");
1630 return -1;
1631 }
1632 }
1633
1634 if (tops->flags & ZERO_TTLV) {
1635 return 0;
1636 }
1637
1638 ttlv = tops->flags >> 4;
1639 tltlv = GET_TOP_TLV(pptr);
1640
1641 /*XXX: 15 top level tlvs will probably be fine
1642 You are nuts if you send more ;-> */
1643 while (rlen != 0) {
1644 uint16_t type, tlvl;
1645
1646 ND_TCHECK_SIZE(tltlv);
1647 type = GET_BE_U_2(tltlv->type);
1648 tlvl = GET_BE_U_2(tltlv->length);
1649 invtlv = tlv_valid(tlvl, rlen);
1650 if (invtlv)
1651 break;
1652
1653 /*
1654 * At this point, tlv_valid() has ensured that the TLV
1655 * length is large enough but not too large (it doesn't
1656 * go past the end of the packet).
1657 */
1658 if (!ttlv_valid(type)) {
1659 ND_PRINT("\n\tInvalid ForCES Top TLV type=0x%x",
1660 type);
1661 return -1;
1662 }
1663
1664 if (ndo->ndo_vflag >= 3)
1665 ND_PRINT("\t%s, length %u (data length %u Bytes)",
1666 tok2str(ForCES_TLV, NULL, type),
1667 tlvl,
1668 tlvl - TLV_HDRL);
1669
1670 rc = tops->print(ndo, (const u_char *) TLV_DATA(tltlv),
1671 tlvl,
1672 tops->op_msk, 9);
1673 if (rc < 0) {
1674 return -1;
1675 }
1676 tltlv = GO_NXT_TLV(tltlv, rlen);
1677 ttlv--;
1678 if (ttlv <= 0)
1679 break;
1680 }
1681 /*
1682 * XXX - if ttlv != 0, does that mean that the packet was too
1683 * short, and didn't have *enough* TLVs in it?
1684 */
1685 if (rlen) {
1686 ND_PRINT("\tMess TopTLV header: min %u, total %u advertised %u ",
1687 TLV_HDRL, rlen, GET_BE_U_2(tltlv->length));
1688 return -1;
1689 }
1690
1691 return 0;
1692
1693 trunc:
1694 nd_print_trunc(ndo);
1695 return -1;
1696 }
1697
1698 void
1699 forces_print(netdissect_options *ndo,
1700 const u_char * pptr, u_int len)
1701 {
1702 const struct forcesh *fhdr;
1703 u_int mlen;
1704 uint32_t flg_raw;
1705 uint8_t tom;
1706 const struct tom_h *tops;
1707 int rc = 0;
1708
1709 ndo->ndo_protocol = "forces";
1710 fhdr = (const struct forcesh *)pptr;
1711 ND_TCHECK_SIZE(fhdr);
1712 tom = GET_U_1(fhdr->fm_tom);
1713 if (!tom_valid(tom)) {
1714 ND_PRINT("Invalid ForCES message type %u\n", tom);
1715 goto error;
1716 }
1717
1718 mlen = ForCES_BLN(fhdr);
1719
1720 tops = get_forces_tom(tom);
1721 if (tops->v == TOM_RSVD) {
1722 ND_PRINT("\n\tUnknown ForCES message type=0x%x", tom);
1723 goto error;
1724 }
1725
1726 ND_PRINT("\n\tForCES %s ", tops->s);
1727 if (!ForCES_HLN_VALID(mlen, len)) {
1728 ND_PRINT("Illegal ForCES pkt len - min %u, total recvd %u, advertised %u ",
1729 ForCES_HDRL, len, ForCES_BLN(fhdr));
1730 goto error;
1731 }
1732
1733 ND_TCHECK_4(pptr + 20);
1734 flg_raw = GET_BE_U_4(pptr + 20);
1735 if (ndo->ndo_vflag >= 1) {
1736 ND_PRINT("\n\tForCES Version %u len %uB flags 0x%08x ",
1737 ForCES_V(fhdr), mlen, flg_raw);
1738 ND_PRINT("\n\tSrcID 0x%x(%s) DstID 0x%x(%s) Correlator 0x%" PRIx64,
1739 ForCES_SID(fhdr), ForCES_node(ForCES_SID(fhdr)),
1740 ForCES_DID(fhdr), ForCES_node(ForCES_DID(fhdr)),
1741 GET_BE_U_8(fhdr->fm_cor));
1742
1743 }
1744 if (ndo->ndo_vflag >= 2) {
1745 ND_PRINT("\n\tForCES flags:\n\t %s(0x%x), prio=%u, %s(0x%x),\n\t %s(0x%x), %s(0x%x)\n",
1746 tok2str(ForCES_ACKs, "ACKUnknown", ForCES_ACK(fhdr)),
1747 ForCES_ACK(fhdr),
1748 ForCES_PRI(fhdr),
1749 tok2str(ForCES_EMs, "EMUnknown", ForCES_EM(fhdr)),
1750 ForCES_EM(fhdr),
1751 tok2str(ForCES_ATs, "ATUnknown", ForCES_AT(fhdr)),
1752 ForCES_AT(fhdr),
1753 tok2str(ForCES_TPs, "TPUnknown", ForCES_TP(fhdr)),
1754 ForCES_TP(fhdr));
1755 ND_PRINT("\t Extra flags: rsv(b5-7) 0x%x rsv(b13-31) 0x%x\n",
1756 ForCES_RS1(fhdr), ForCES_RS2(fhdr));
1757 }
1758 rc = forces_type_print(ndo, pptr, fhdr, mlen, tops);
1759 if (rc < 0) {
1760 error:
1761 hex_print_with_offset(ndo, "\n\t[", pptr, len, 0);
1762 ND_PRINT("\n\t]");
1763 return;
1764 }
1765
1766 if (ndo->ndo_vflag >= 4) {
1767 ND_PRINT("\n\t Raw ForCES message\n\t [");
1768 hex_print_with_offset(ndo, "\n\t ", pptr, len, 0);
1769 ND_PRINT("\n\t ]");
1770 }
1771 ND_PRINT("\n");
1772 return;
1773
1774 trunc:
1775 nd_print_trunc(ndo);
1776 }
[mirror] the TCPdump network dissector