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CHANGES: Add changes backported to 4.99
[tcpdump] / print-forces.c
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 #include <config.h>
22
23 #include "netdissect-stdinc.h"
24
25 #include "netdissect.h"
26 #include "extract.h"
27
28
29 #define ForCES_VERS 1
30 #define ForCES_HDRL 24
31 #define ForCES_ALNL 4U
32 #define TLV_HDRL 4
33 #define ILV_HDRL 8
34
35 #define TOM_RSVD 0x0
36 #define TOM_ASSNSETUP 0x1
37 #define TOM_ASSNTEARD 0x2
38 #define TOM_CONFIG 0x3
39 #define TOM_QUERY 0x4
40 #define TOM_EVENTNOT 0x5
41 #define TOM_PKTREDIR 0x6
42 #define TOM_HEARTBT 0x0F
43 #define TOM_ASSNSETREP 0x11
44 #define TOM_CONFIGREP 0x13
45 #define TOM_QUERYREP 0x14
46
47 /*
48 * tom_h Flags: resv1(8b):maxtlvs(4b):resv2(2b):mintlv(2b)
49 */
50 #define ZERO_TTLV 0x01
51 #define ZERO_MORE_TTLV 0x02
52 #define ONE_MORE_TTLV 0x04
53 #define ZERO_TLV 0x00
54 #define ONE_TLV 0x10
55 #define TWO_TLV 0x20
56 #define MAX_TLV 0xF0
57
58 #define TTLV_T1 (ONE_MORE_TTLV|ONE_TLV)
59 #define TTLV_T2 (ONE_MORE_TTLV|MAX_TLV)
60
61 struct tom_h {
62 uint32_t v;
63 uint16_t flags;
64 uint16_t op_msk;
65 const char *s;
66 int (*print) (netdissect_options *ndo, const u_char * pptr, u_int len,
67 uint16_t op_msk, int indent);
68 };
69
70 enum {
71 TOM_RSV_I,
72 TOM_ASS_I,
73 TOM_AST_I,
74 TOM_CFG_I,
75 TOM_QRY_I,
76 TOM_EVN_I,
77 TOM_RED_I,
78 TOM_HBT_I,
79 TOM_ASR_I,
80 TOM_CNR_I,
81 TOM_QRR_I,
82 _TOM_RSV_MAX
83 };
84 #define TOM_MAX_IND (_TOM_RSV_MAX - 1)
85
86 static int
87 tom_valid(uint8_t tom)
88 {
89 if (tom > 0) {
90 if (tom >= 0x7 && tom <= 0xe)
91 return 0;
92 if (tom == 0x10)
93 return 0;
94 if (tom > 0x14)
95 return 0;
96 return 1;
97 } else
98 return 0;
99 }
100
101 static const char *
102 ForCES_node(uint32_t node)
103 {
104 if (node <= 0x3FFFFFFF)
105 return "FE";
106 if (node >= 0x40000000 && node <= 0x7FFFFFFF)
107 return "CE";
108 if (node >= 0xC0000000 && node <= 0xFFFFFFEF)
109 return "AllMulticast";
110 if (node == 0xFFFFFFFD)
111 return "AllCEsBroadcast";
112 if (node == 0xFFFFFFFE)
113 return "AllFEsBroadcast";
114 if (node == 0xFFFFFFFF)
115 return "AllBroadcast";
116
117 return "ForCESreserved";
118
119 }
120
121 static const struct tok ForCES_ACKs[] = {
122 {0x0, "NoACK"},
123 {0x1, "SuccessACK"},
124 {0x2, "FailureACK"},
125 {0x3, "AlwaysACK"},
126 {0, NULL}
127 };
128
129 static const struct tok ForCES_EMs[] = {
130 {0x0, "EMReserved"},
131 {0x1, "execute-all-or-none"},
132 {0x2, "execute-until-failure"},
133 {0x3, "continue-execute-on-failure"},
134 {0, NULL}
135 };
136
137 static const struct tok ForCES_ATs[] = {
138 {0x0, "Standalone"},
139 {0x1, "2PCtransaction"},
140 {0, NULL}
141 };
142
143 static const struct tok ForCES_TPs[] = {
144 {0x0, "StartofTransaction"},
145 {0x1, "MiddleofTransaction"},
146 {0x2, "EndofTransaction"},
147 {0x3, "abort"},
148 {0, NULL}
149 };
150
151 /*
152 * Structure of forces header, naked of TLVs.
153 */
154 struct forcesh {
155 nd_uint8_t fm_vrsvd; /* version and reserved */
156 #define ForCES_V(forcesh) (GET_U_1((forcesh)->fm_vrsvd) >> 4)
157 nd_uint8_t fm_tom; /* type of message */
158 nd_uint16_t fm_len; /* total length * 4 bytes */
159 #define ForCES_BLN(forcesh) ((uint32_t)(GET_BE_U_2((forcesh)->fm_len) << 2))
160 nd_uint32_t fm_sid; /* Source ID */
161 #define ForCES_SID(forcesh) GET_BE_U_4((forcesh)->fm_sid)
162 nd_uint32_t fm_did; /* Destination ID */
163 #define ForCES_DID(forcesh) GET_BE_U_4((forcesh)->fm_did)
164 nd_uint8_t fm_cor[8]; /* correlator */
165 nd_uint32_t fm_flags; /* flags */
166 #define ForCES_ACK(forcesh) ((GET_BE_U_4((forcesh)->fm_flags)&0xC0000000) >> 30)
167 #define ForCES_PRI(forcesh) ((GET_BE_U_4((forcesh)->fm_flags)&0x38000000) >> 27)
168 #define ForCES_RS1(forcesh) ((GET_BE_U_4((forcesh)->fm_flags)&0x07000000) >> 24)
169 #define ForCES_EM(forcesh) ((GET_BE_U_4((forcesh)->fm_flags)&0x00C00000) >> 22)
170 #define ForCES_AT(forcesh) ((GET_BE_U_4((forcesh)->fm_flags)&0x00200000) >> 21)
171 #define ForCES_TP(forcesh) ((GET_BE_U_4((forcesh)->fm_flags)&0x00180000) >> 19)
172 #define ForCES_RS2(forcesh) ((GET_BE_U_4((forcesh)->fm_flags)&0x0007FFFF) >> 0)
173 };
174
175 #define ForCES_HLN_VALID(fhl,tlen) ((tlen) >= ForCES_HDRL && \
176 (fhl) >= ForCES_HDRL && \
177 (fhl) == (tlen))
178
179 #define F_LFB_RSVD 0x0
180 #define F_LFB_FEO 0x1
181 #define F_LFB_FEPO 0x2
182 static const struct tok ForCES_LFBs[] = {
183 {F_LFB_RSVD, "Invalid TLV"},
184 {F_LFB_FEO, "FEObj LFB"},
185 {F_LFB_FEPO, "FEProtoObj LFB"},
186 {0, NULL}
187 };
188
189 /* this is defined in RFC5810 section A.2 */
190 /* https://www.iana.org/assignments/forces/forces.xhtml#oper-tlv-types */
191 enum {
192 F_OP_RSV = 0,
193 F_OP_SET = 1,
194 F_OP_SETPROP = 2,
195 F_OP_SETRESP = 3,
196 F_OP_SETPRESP = 4,
197 F_OP_DEL = 5,
198 F_OP_DELRESP = 6,
199 F_OP_GET = 7,
200 F_OP_GETPROP = 8,
201 F_OP_GETRESP = 9,
202 F_OP_GETPRESP = 10,
203 F_OP_REPORT = 11,
204 F_OP_COMMIT = 12,
205 F_OP_RCOMMIT = 13,
206 F_OP_RTRCOMP = 14,
207 _F_OP_MAX
208 };
209 #define F_OP_MAX (_F_OP_MAX - 1)
210
211 enum {
212 B_OP_SET = 1 << (F_OP_SET - 1),
213 B_OP_SETPROP = 1 << (F_OP_SETPROP - 1),
214 B_OP_SETRESP = 1 << (F_OP_SETRESP - 1),
215 B_OP_SETPRESP = 1 << (F_OP_SETPRESP - 1),
216 B_OP_DEL = 1 << (F_OP_DEL - 1),
217 B_OP_DELRESP = 1 << (F_OP_DELRESP - 1),
218 B_OP_GET = 1 << (F_OP_GET - 1),
219 B_OP_GETPROP = 1 << (F_OP_GETPROP - 1),
220 B_OP_GETRESP = 1 << (F_OP_GETRESP - 1),
221 B_OP_GETPRESP = 1 << (F_OP_GETPRESP - 1),
222 B_OP_REPORT = 1 << (F_OP_REPORT - 1),
223 B_OP_COMMIT = 1 << (F_OP_COMMIT - 1),
224 B_OP_RCOMMIT = 1 << (F_OP_RCOMMIT - 1),
225 B_OP_RTRCOMP = 1 << (F_OP_RTRCOMP - 1)
226 };
227
228 struct optlv_h {
229 uint16_t flags;
230 uint16_t op_msk;
231 const char *s;
232 int (*print) (netdissect_options *ndo, const u_char * pptr, u_int len,
233 uint16_t op_msk, int indent);
234 };
235
236 static int genoptlv_print(netdissect_options *, const u_char * pptr, u_int len,
237 uint16_t op_msk, int indent);
238 static int recpdoptlv_print(netdissect_options *, const u_char * pptr, u_int len,
239 uint16_t op_msk, int indent);
240 static int invoptlv_print(netdissect_options *, const u_char * pptr, u_int len,
241 uint16_t op_msk, int indent);
242
243 #define OP_MIN_SIZ 8
244 struct pathdata_h {
245 nd_uint16_t pflags;
246 nd_uint16_t pIDcnt;
247 };
248
249 #define B_FULLD 0x1
250 #define B_SPARD 0x2
251 #define B_RESTV 0x4
252 #define B_KEYIN 0x8
253 #define B_APPND 0x10
254 #define B_TRNG 0x20
255
256 static const struct optlv_h OPTLV_msg[F_OP_MAX + 1] = {
257 /* F_OP_RSV */ {ZERO_TTLV, 0, "Invalid OPTLV", invoptlv_print},
258 /* F_OP_SET */ {TTLV_T2, B_FULLD | B_SPARD, " Set", recpdoptlv_print},
259 /* F_OP_SETPROP */
260 {TTLV_T2, B_FULLD | B_SPARD, " SetProp", recpdoptlv_print},
261 /* F_OP_SETRESP */ {TTLV_T2, B_RESTV, " SetResp", recpdoptlv_print},
262 /* F_OP_SETPRESP */ {TTLV_T2, B_RESTV, " SetPropResp", recpdoptlv_print},
263 /* F_OP_DEL */ {ZERO_TTLV, 0, " Del", recpdoptlv_print},
264 /* F_OP_DELRESP */ {TTLV_T2, B_RESTV, " DelResp", recpdoptlv_print},
265 /* F_OP_GET */ {ZERO_TTLV, 0, " Get", recpdoptlv_print},
266 /* F_OP_GETPROP */ {ZERO_TTLV, 0, " GetProp", recpdoptlv_print},
267 /* F_OP_GETRESP */
268 {TTLV_T2, B_FULLD | B_SPARD | B_RESTV, " GetResp", recpdoptlv_print},
269 /* F_OP_GETPRESP */
270 {TTLV_T2, B_FULLD | B_RESTV, " GetPropResp", recpdoptlv_print},
271 /* F_OP_REPORT */
272 {TTLV_T2, B_FULLD | B_SPARD, " Report", recpdoptlv_print},
273 /* F_OP_COMMIT */ {ZERO_TTLV, 0, " Commit", NULL},
274 /* F_OP_RCOMMIT */ {TTLV_T1, B_RESTV, " RCommit", genoptlv_print},
275 /* F_OP_RTRCOMP */ {ZERO_TTLV, 0, " RTRCOMP", NULL},
276 };
277
278 static const struct optlv_h *
279 get_forces_optlv_h(uint16_t opt)
280 {
281 if (opt > F_OP_MAX || opt == F_OP_RSV)
282 return &OPTLV_msg[F_OP_RSV];
283
284 return &OPTLV_msg[opt];
285 }
286
287 #define IND_SIZE 256
288 #define IND_CHR ' '
289 #define IND_PREF '\n'
290 #define IND_SUF 0x0
291 static char ind_buf[IND_SIZE];
292
293 static char *
294 indent_pr(int indent, int nlpref)
295 {
296 int i = 0;
297 char *r = ind_buf;
298
299 if (indent > (IND_SIZE - 1))
300 indent = IND_SIZE - 1;
301
302 if (nlpref) {
303 r[i] = IND_PREF;
304 i++;
305 indent--;
306 }
307
308 while (--indent >= 0)
309 r[i++] = IND_CHR;
310
311 r[i] = IND_SUF;
312 return r;
313 }
314
315 static int
316 op_valid(uint16_t op, uint16_t mask)
317 {
318 if (op == 0)
319 return 0;
320 if (op <= F_OP_MAX)
321 return (1 << (op - 1)) & mask; /* works only for 0x0001 through 0x0010 */
322 /* I guess we should allow vendor operations? */
323 if (op >= 0x8000)
324 return 1;
325 return 0;
326 }
327
328 #define F_TLV_RSVD 0x0000
329 #define F_TLV_REDR 0x0001
330 #define F_TLV_ASRS 0x0010
331 #define F_TLV_ASRT 0x0011
332 #define F_TLV_LFBS 0x1000
333 #define F_TLV_PDAT 0x0110
334 #define F_TLV_KEYI 0x0111
335 #define F_TLV_FULD 0x0112
336 #define F_TLV_SPAD 0x0113
337 #define F_TLV_REST 0x0114
338 #define F_TLV_METD 0x0115
339 #define F_TLV_REDD 0x0116
340 #define F_TLV_TRNG 0x0117
341
342
343 #define F_TLV_VNST 0x8000
344
345 static const struct tok ForCES_TLV[] = {
346 {F_TLV_RSVD, "Invalid TLV"},
347 {F_TLV_REDR, "REDIRECT TLV"},
348 {F_TLV_ASRS, "ASResult TLV"},
349 {F_TLV_ASRT, "ASTreason TLV"},
350 {F_TLV_LFBS, "LFBselect TLV"},
351 {F_TLV_PDAT, "PATH-DATA TLV"},
352 {F_TLV_KEYI, "KEYINFO TLV"},
353 {F_TLV_FULD, "FULLDATA TLV"},
354 {F_TLV_SPAD, "SPARSEDATA TLV"},
355 {F_TLV_REST, "RESULT TLV"},
356 {F_TLV_METD, "METADATA TLV"},
357 {F_TLV_REDD, "REDIRECTDATA TLV"},
358 {0, NULL}
359 };
360
361 #define TLV_HLN 4
362 static int
363 ttlv_valid(uint16_t ttlv)
364 {
365 if (ttlv > 0) {
366 if (ttlv == 1 || ttlv == 0x1000)
367 return 1;
368 if (ttlv >= 0x10 && ttlv <= 0x11)
369 return 1;
370 if (ttlv >= 0x110 && ttlv <= 0x116)
371 return 1;
372 if (ttlv >= 0x8000)
373 return 0; /* XXX: */
374 }
375
376 return 0;
377 }
378
379 struct forces_ilv {
380 nd_uint32_t type;
381 nd_uint32_t length;
382 };
383
384 struct forces_tlv {
385 nd_uint16_t type;
386 nd_uint16_t length;
387 };
388
389 #define F_ALN_LEN(len) roundup2(len, ForCES_ALNL)
390 #define GET_TOP_TLV(fhdr) ((const struct forces_tlv *)((fhdr) + sizeof (struct forcesh)))
391 #define TLV_SET_LEN(len) (F_ALN_LEN(TLV_HDRL) + (len))
392 #define TLV_DATA(tlvp) ((const void*)(((const char*)(tlvp)) + TLV_SET_LEN(0)))
393 #define GO_NXT_TLV(tlv,rlen) ((rlen) -= F_ALN_LEN(GET_BE_U_2((tlv)->length)), \
394 (const struct forces_tlv*)(((const char*)(tlv)) \
395 + F_ALN_LEN(GET_BE_U_2((tlv)->length))))
396 #define ILV_SET_LEN(len) (F_ALN_LEN(ILV_HDRL) + (len))
397 #define ILV_DATA(ilvp) ((const void*)(((const char*)(ilvp)) + ILV_SET_LEN(0)))
398 #define GO_NXT_ILV(ilv,rlen) ((rlen) -= F_ALN_LEN(GET_BE_U_4((ilv)->length)), \
399 (const struct forces_ilv *)(((const char*)(ilv)) \
400 + F_ALN_LEN(GET_BE_U_4((ilv)->length))))
401 #define INVALID_RLEN 1
402 #define INVALID_STLN 2
403 #define INVALID_LTLN 3
404 #define INVALID_ALEN 4
405
406 static const struct tok ForCES_TLV_err[] = {
407 {INVALID_RLEN, "Invalid total length"},
408 {INVALID_STLN, "xLV too short"},
409 {INVALID_LTLN, "xLV too long"},
410 {INVALID_ALEN, "data padding missing"},
411 {0, NULL}
412 };
413
414 static u_int
415 tlv_valid(u_int tlvl, u_int rlen)
416 {
417 if (rlen < TLV_HDRL)
418 return INVALID_RLEN;
419 if (tlvl < TLV_HDRL)
420 return INVALID_STLN;
421 if (tlvl > rlen)
422 return INVALID_LTLN;
423 if (rlen < F_ALN_LEN(tlvl))
424 return INVALID_ALEN;
425
426 return 0;
427 }
428
429 static int
430 ilv_valid(netdissect_options *ndo, const struct forces_ilv *ilv, u_int rlen)
431 {
432 if (rlen < ILV_HDRL)
433 return INVALID_RLEN;
434 if (GET_BE_U_4(ilv->length) < ILV_HDRL)
435 return INVALID_STLN;
436 if (GET_BE_U_4(ilv->length) > rlen)
437 return INVALID_LTLN;
438 if (rlen < F_ALN_LEN(GET_BE_U_4(ilv->length)))
439 return INVALID_ALEN;
440
441 return 0;
442 }
443
444 static int lfbselect_print(netdissect_options *, const u_char * pptr, u_int len,
445 uint16_t op_msk, int indent);
446 static int redirect_print(netdissect_options *, const u_char * pptr, u_int len,
447 uint16_t op_msk, int indent);
448 static int asrtlv_print(netdissect_options *, const u_char * pptr, u_int len,
449 uint16_t op_msk, int indent);
450 static int asttlv_print(netdissect_options *, const u_char * pptr, u_int len,
451 uint16_t op_msk, int indent);
452
453 struct forces_lfbsh {
454 nd_uint32_t class;
455 nd_uint32_t instance;
456 };
457
458 #define ASSNS_OPS (B_OP_REPORT)
459 #define CFG_OPS (B_OP_SET|B_OP_SETPROP|B_OP_DEL|B_OP_COMMIT|B_OP_RTRCOMP)
460 #define CFG_ROPS (B_OP_SETRESP|B_OP_SETPRESP|B_OP_DELRESP|B_OP_RCOMMIT)
461 #define CFG_QY (B_OP_GET|B_OP_GETPROP)
462 #define CFG_QYR (B_OP_GETRESP|B_OP_GETPRESP)
463 #define CFG_EVN (B_OP_REPORT)
464
465 static const struct tom_h ForCES_msg[TOM_MAX_IND + 1] = {
466 /* TOM_RSV_I */ {TOM_RSVD, ZERO_TTLV, 0, "Invalid message", NULL},
467 /* TOM_ASS_I */ {TOM_ASSNSETUP, ZERO_MORE_TTLV | TWO_TLV, ASSNS_OPS,
468 "Association Setup", lfbselect_print},
469 /* TOM_AST_I */
470 {TOM_ASSNTEARD, TTLV_T1, 0, "Association TearDown", asttlv_print},
471 /* TOM_CFG_I */ {TOM_CONFIG, TTLV_T2, CFG_OPS, "Config", lfbselect_print},
472 /* TOM_QRY_I */ {TOM_QUERY, TTLV_T2, CFG_QY, "Query", lfbselect_print},
473 /* TOM_EVN_I */ {TOM_EVENTNOT, TTLV_T1, CFG_EVN, "Event Notification",
474 lfbselect_print},
475 /* TOM_RED_I */
476 {TOM_PKTREDIR, TTLV_T2, 0, "Packet Redirect", redirect_print},
477 /* TOM_HBT_I */ {TOM_HEARTBT, ZERO_TTLV, 0, "HeartBeat", NULL},
478 /* TOM_ASR_I */
479 {TOM_ASSNSETREP, TTLV_T1, 0, "Association Response", asrtlv_print},
480 /* TOM_CNR_I */ {TOM_CONFIGREP, TTLV_T2, CFG_ROPS, "Config Response",
481 lfbselect_print},
482 /* TOM_QRR_I */
483 {TOM_QUERYREP, TTLV_T2, CFG_QYR, "Query Response", lfbselect_print},
484 };
485
486 static const struct tom_h *
487 get_forces_tom(uint8_t tom)
488 {
489 int i;
490 for (i = TOM_RSV_I; i <= TOM_MAX_IND; i++) {
491 const struct tom_h *th = &ForCES_msg[i];
492 if (th->v == tom)
493 return th;
494 }
495 return &ForCES_msg[TOM_RSV_I];
496 }
497
498 struct pdata_ops {
499 uint32_t v;
500 uint16_t flags;
501 uint16_t op_msk;
502 const char *s;
503 int (*print) (netdissect_options *, const u_char * pptr, u_int len,
504 uint16_t op_msk, int indent);
505 };
506
507 enum {
508 PD_RSV_I,
509 PD_SEL_I,
510 PD_FDT_I,
511 PD_SDT_I,
512 PD_RES_I,
513 PD_PDT_I,
514 _PD_RSV_MAX
515 };
516 #define PD_MAX_IND (_TOM_RSV_MAX - 1)
517
518 static int
519 pd_valid(uint16_t pd)
520 {
521 if (pd >= F_TLV_PDAT && pd <= F_TLV_REST)
522 return 1;
523 return 0;
524 }
525
526 static void
527 chk_op_type(netdissect_options *ndo,
528 uint16_t type, uint16_t msk, uint16_t omsk)
529 {
530 if (type != F_TLV_PDAT) {
531 if (msk & B_KEYIN) {
532 if (type != F_TLV_KEYI) {
533 ND_PRINT("Based on flags expected KEYINFO TLV!\n");
534 }
535 } else {
536 if (!(msk & omsk)) {
537 ND_PRINT("Illegal DATA encoding for type 0x%x programmed %x got %x\n",
538 type, omsk, msk);
539 }
540 }
541 }
542
543 }
544
545 #define F_SELKEY 1
546 #define F_SELTABRANGE 2
547 #define F_TABAPPEND 4
548
549 struct res_val {
550 nd_uint8_t result;
551 nd_uint8_t resv1;
552 nd_uint16_t resv2;
553 };
554
555 static int prestlv_print(netdissect_options *, const u_char * pptr, u_int len,
556 uint16_t op_msk, int indent);
557 static int pkeyitlv_print(netdissect_options *, const u_char * pptr, u_int len,
558 uint16_t op_msk, int indent);
559 static int fdatatlv_print(netdissect_options *, const u_char * pptr, u_int len,
560 uint16_t op_msk, int indent);
561 static int sdatatlv_print(netdissect_options *, const u_char * pptr, u_int len,
562 uint16_t op_msk, int indent);
563
564 static const struct pdata_ops ForCES_pdata[PD_MAX_IND + 1] = {
565 /* PD_RSV_I */ {0, 0, 0, "Invalid message", NULL},
566 /* PD_SEL_I */ {F_TLV_KEYI, 0, 0, "KEYINFO TLV", pkeyitlv_print},
567 /* PD_FDT_I */ {F_TLV_FULD, 0, B_FULLD, "FULLDATA TLV", fdatatlv_print},
568 /* PD_SDT_I */ {F_TLV_SPAD, 0, B_SPARD, "SPARSEDATA TLV", sdatatlv_print},
569 /* PD_RES_I */ {F_TLV_REST, 0, B_RESTV, "RESULT TLV", prestlv_print},
570 /* PD_PDT_I */
571 {F_TLV_PDAT, 0, 0, "Inner PATH-DATA TLV", recpdoptlv_print},
572 };
573
574 static const struct pdata_ops *
575 get_forces_pd(uint16_t pd)
576 {
577 int i;
578 for (i = PD_RSV_I + 1; i <= PD_MAX_IND; i++) {
579 const struct pdata_ops *pdo = &ForCES_pdata[i];
580 if (pdo->v == pd)
581 return pdo;
582 }
583 return &ForCES_pdata[TOM_RSV_I];
584 }
585
586 enum {
587 E_SUCCESS,
588 E_INVALID_HEADER,
589 E_LENGTH_MISMATCH,
590 E_VERSION_MISMATCH,
591 E_INVALID_DESTINATION_PID,
592 E_LFB_UNKNOWN,
593 E_LFB_NOT_FOUND,
594 E_LFB_INSTANCE_ID_NOT_FOUND,
595 E_INVALID_PATH,
596 E_COMPONENT_DOES_NOT_EXIST,
597 E_EXISTS,
598 E_NOT_FOUND,
599 E_READ_ONLY,
600 E_INVALID_ARRAY_CREATION,
601 E_VALUE_OUT_OF_RANGE,
602 E_CONTENTS_TOO_LONG,
603 E_INVALID_PARAMETERS,
604 E_INVALID_MESSAGE_TYPE,
605 E_INVALID_FLAGS,
606 E_INVALID_TLV,
607 E_EVENT_ERROR,
608 E_NOT_SUPPORTED,
609 E_MEMORY_ERROR,
610 E_INTERNAL_ERROR,
611 /* 0x18-0xFE are reserved .. */
612 E_UNSPECIFIED_ERROR = 0XFF
613 };
614
615 static const struct tok ForCES_errs[] = {
616 {E_SUCCESS, "SUCCESS"},
617 {E_INVALID_HEADER, "INVALID HEADER"},
618 {E_LENGTH_MISMATCH, "LENGTH MISMATCH"},
619 {E_VERSION_MISMATCH, "VERSION MISMATCH"},
620 {E_INVALID_DESTINATION_PID, "INVALID DESTINATION PID"},
621 {E_LFB_UNKNOWN, "LFB UNKNOWN"},
622 {E_LFB_NOT_FOUND, "LFB NOT FOUND"},
623 {E_LFB_INSTANCE_ID_NOT_FOUND, "LFB INSTANCE ID NOT FOUND"},
624 {E_INVALID_PATH, "INVALID PATH"},
625 {E_COMPONENT_DOES_NOT_EXIST, "COMPONENT DOES NOT EXIST"},
626 {E_EXISTS, "EXISTS ALREADY"},
627 {E_NOT_FOUND, "NOT FOUND"},
628 {E_READ_ONLY, "READ ONLY"},
629 {E_INVALID_ARRAY_CREATION, "INVALID ARRAY CREATION"},
630 {E_VALUE_OUT_OF_RANGE, "VALUE OUT OF RANGE"},
631 {E_CONTENTS_TOO_LONG, "CONTENTS TOO LONG"},
632 {E_INVALID_PARAMETERS, "INVALID PARAMETERS"},
633 {E_INVALID_MESSAGE_TYPE, "INVALID MESSAGE TYPE"},
634 {E_INVALID_FLAGS, "INVALID FLAGS"},
635 {E_INVALID_TLV, "INVALID TLV"},
636 {E_EVENT_ERROR, "EVENT ERROR"},
637 {E_NOT_SUPPORTED, "NOT SUPPORTED"},
638 {E_MEMORY_ERROR, "MEMORY ERROR"},
639 {E_INTERNAL_ERROR, "INTERNAL ERROR"},
640 {E_UNSPECIFIED_ERROR, "UNSPECIFIED ERROR"},
641 {0, NULL}
642 };
643
644 #define RESLEN 4
645
646 static int
647 prestlv_print(netdissect_options *ndo,
648 const u_char * pptr, u_int len,
649 uint16_t op_msk _U_, int indent)
650 {
651 const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
652 const u_char *tdp = (const u_char *) TLV_DATA(tlv);
653 const struct res_val *r = (const struct res_val *)tdp;
654 u_int dlen;
655 uint8_t result;
656
657 /*
658 * pdatacnt_print() has ensured that len (the TLV length)
659 * >= TLV_HDRL.
660 */
661 dlen = len - TLV_HDRL;
662 if (dlen != RESLEN) {
663 ND_PRINT("illegal RESULT-TLV: %u bytes!\n", dlen);
664 return -1;
665 }
666
667 ND_TCHECK_SIZE(r);
668 result = GET_U_1(r->result);
669 if (result >= 0x18 && result <= 0xFE) {
670 ND_PRINT("illegal reserved result code: 0x%x!\n", result);
671 return -1;
672 }
673
674 if (ndo->ndo_vflag >= 3) {
675 char *ib = indent_pr(indent, 0);
676 ND_PRINT("%s Result: %s (code 0x%x)\n", ib,
677 tok2str(ForCES_errs, NULL, result), result);
678 }
679 return 0;
680
681 trunc:
682 nd_print_trunc(ndo);
683 return -1;
684 }
685
686 static int
687 fdatatlv_print(netdissect_options *ndo,
688 const u_char * pptr, u_int len,
689 uint16_t op_msk _U_, int indent)
690 {
691 const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
692 u_int rlen;
693 const u_char *tdp = (const u_char *) TLV_DATA(tlv);
694 uint16_t type;
695
696 /*
697 * pdatacnt_print() or pkeyitlv_print() has ensured that len
698 * (the TLV length) >= TLV_HDRL.
699 */
700 rlen = len - TLV_HDRL;
701 ND_TCHECK_SIZE(tlv);
702 type = GET_BE_U_2(tlv->type);
703 if (type != F_TLV_FULD) {
704 ND_PRINT("Error: expecting FULLDATA!\n");
705 return -1;
706 }
707
708 if (ndo->ndo_vflag >= 3) {
709 char *ib = indent_pr(indent + 2, 1);
710 ND_PRINT("%s[", ib + 1);
711 hex_print(ndo, ib, tdp, rlen);
712 ND_PRINT("\n%s]", ib + 1);
713 }
714 return 0;
715
716 trunc:
717 nd_print_trunc(ndo);
718 return -1;
719 }
720
721 static int
722 sdatailv_print(netdissect_options *ndo,
723 const u_char * pptr, u_int len,
724 uint16_t op_msk _U_, int indent)
725 {
726 u_int rlen;
727 const struct forces_ilv *ilv = (const struct forces_ilv *)pptr;
728 int invilv;
729
730 if (len < ILV_HDRL) {
731 ND_PRINT("Error: BAD SPARSEDATA-TLV!\n");
732 return -1;
733 }
734 rlen = len;
735 indent += 1;
736 while (rlen != 0) {
737 #if 0
738 ND_PRINT("Jamal - outstanding length <%u>\n", rlen);
739 #endif
740 char *ib = indent_pr(indent, 1);
741 const u_char *tdp = (const u_char *) ILV_DATA(ilv);
742 invilv = ilv_valid(ndo, ilv, rlen);
743 if (invilv) {
744 ND_PRINT("Error: %s, rlen %u\n",
745 tok2str(ForCES_TLV_err, NULL, invilv), rlen);
746 return -1;
747 }
748 if (ndo->ndo_vflag >= 3) {
749 u_int ilvl = GET_BE_U_4(ilv->length);
750 ND_PRINT("\n%s ILV: type %x length %u\n", ib + 1,
751 GET_BE_U_4(ilv->type), ilvl);
752 hex_print(ndo, "\t\t[", tdp, ilvl-ILV_HDRL);
753 }
754
755 ilv = GO_NXT_ILV(ilv, rlen);
756 }
757
758 return 0;
759 }
760
761 static int
762 sdatatlv_print(netdissect_options *ndo,
763 const u_char * pptr, u_int len,
764 uint16_t op_msk, int indent)
765 {
766 const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
767 u_int rlen;
768 const u_char *tdp = (const u_char *) TLV_DATA(tlv);
769 uint16_t type;
770
771 /*
772 * pdatacnt_print() has ensured that len (the TLV length)
773 * >= TLV_HDRL.
774 */
775 rlen = len - TLV_HDRL;
776 ND_TCHECK_SIZE(tlv);
777 type = GET_BE_U_2(tlv->type);
778 if (type != F_TLV_SPAD) {
779 ND_PRINT("Error: expecting SPARSEDATA!\n");
780 return -1;
781 }
782
783 return sdatailv_print(ndo, tdp, rlen, op_msk, indent);
784
785 trunc:
786 nd_print_trunc(ndo);
787 return -1;
788 }
789
790 static int
791 pkeyitlv_print(netdissect_options *ndo,
792 const u_char * pptr, u_int len,
793 uint16_t op_msk, int indent)
794 {
795 const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
796 const u_char *tdp = (const u_char *) TLV_DATA(tlv);
797 const u_char *dp = tdp + 4;
798 const struct forces_tlv *kdtlv = (const struct forces_tlv *)dp;
799 uint32_t id;
800 char *ib = indent_pr(indent, 0);
801 uint16_t type, tll;
802 u_int invtlv;
803
804 id = GET_BE_U_4(tdp);
805 ND_PRINT("%sKeyinfo: Key 0x%x\n", ib, id);
806 type = GET_BE_U_2(kdtlv->type);
807 tll = GET_BE_U_2(kdtlv->length);
808 invtlv = tlv_valid(tll, len);
809
810 if (invtlv) {
811 ND_PRINT("%s TLV type 0x%x len %u\n",
812 tok2str(ForCES_TLV_err, NULL, invtlv), type,
813 tll);
814 return -1;
815 }
816 /*
817 * At this point, tlv_valid() has ensured that the TLV
818 * length is large enough but not too large (it doesn't
819 * go past the end of the containing TLV).
820 */
821 tll = GET_BE_U_2(kdtlv->length);
822 dp = (const u_char *) TLV_DATA(kdtlv);
823 return fdatatlv_print(ndo, dp, tll, op_msk, indent);
824 }
825
826 #define PTH_DESC_SIZE 12
827
828 static int
829 pdatacnt_print(netdissect_options *ndo,
830 const u_char * pptr, u_int len,
831 uint16_t IDcnt, uint16_t op_msk, int indent)
832 {
833 u_int i;
834 uint32_t id;
835 char *ib = indent_pr(indent, 0);
836
837 if ((op_msk & B_APPND) && ndo->ndo_vflag >= 3) {
838 ND_PRINT("%sTABLE APPEND\n", ib);
839 }
840 for (i = 0; i < IDcnt; i++) {
841 ND_TCHECK_4(pptr);
842 if (len < 4)
843 goto trunc;
844 id = GET_BE_U_4(pptr);
845 if (ndo->ndo_vflag >= 3)
846 ND_PRINT("%sID#%02u: %u\n", ib, i + 1, id);
847 len -= 4;
848 pptr += 4;
849 }
850
851 if ((op_msk & B_TRNG) || (op_msk & B_KEYIN)) {
852 if (op_msk & B_TRNG) {
853 uint32_t starti, endi;
854
855 if (len < PTH_DESC_SIZE) {
856 ND_PRINT("pathlength %u with key/range too short %u\n",
857 len, PTH_DESC_SIZE);
858 return -1;
859 }
860
861 pptr += sizeof(struct forces_tlv);
862 len -= sizeof(struct forces_tlv);
863
864 starti = GET_BE_U_4(pptr);
865 pptr += 4;
866 len -= 4;
867
868 endi = GET_BE_U_4(pptr);
869 pptr += 4;
870 len -= 4;
871
872 if (ndo->ndo_vflag >= 3)
873 ND_PRINT("%sTable range: [%u,%u]\n", ib, starti, endi);
874 }
875
876 if (op_msk & B_KEYIN) {
877 const struct forces_tlv *keytlv;
878 uint16_t tll;
879
880 if (len < PTH_DESC_SIZE) {
881 ND_PRINT("pathlength %u with key/range too short %u\n",
882 len, PTH_DESC_SIZE);
883 return -1;
884 }
885
886 /* skip keyid */
887 pptr += 4;
888 len -= 4;
889 keytlv = (const struct forces_tlv *)pptr;
890 /* skip header */
891 pptr += sizeof(struct forces_tlv);
892 len -= sizeof(struct forces_tlv);
893 /* skip key content */
894 tll = GET_BE_U_2(keytlv->length);
895 if (tll < TLV_HDRL) {
896 ND_PRINT("key content length %u < %u\n",
897 tll, TLV_HDRL);
898 return -1;
899 }
900 tll -= TLV_HDRL;
901 if (len < tll) {
902 ND_PRINT("key content too short\n");
903 return -1;
904 }
905 pptr += tll;
906 len -= tll;
907 }
908
909 }
910
911 if (len) {
912 const struct forces_tlv *pdtlv = (const struct forces_tlv *)pptr;
913 uint16_t type;
914 uint16_t tlvl, tll;
915 u_int pad = 0;
916 u_int aln;
917 u_int invtlv;
918
919 type = GET_BE_U_2(pdtlv->type);
920 tlvl = GET_BE_U_2(pdtlv->length);
921 invtlv = tlv_valid(tlvl, len);
922 if (invtlv) {
923 ND_PRINT("%s Outstanding bytes %u for TLV type 0x%x TLV len %u\n",
924 tok2str(ForCES_TLV_err, NULL, invtlv), len, type,
925 tlvl);
926 goto pd_err;
927 }
928 /*
929 * At this point, tlv_valid() has ensured that the TLV
930 * length is large enough but not too large (it doesn't
931 * go past the end of the containing TLV).
932 */
933 tll = tlvl - TLV_HDRL;
934 aln = F_ALN_LEN(tlvl);
935 if (aln > tlvl) {
936 if (aln > len) {
937 ND_PRINT("Invalid padded pathdata TLV type 0x%x len %u missing %u pad bytes\n",
938 type, tlvl, aln - len);
939 } else {
940 pad = aln - tlvl;
941 }
942 }
943 if (pd_valid(type)) {
944 const struct pdata_ops *ops = get_forces_pd(type);
945
946 if (ndo->ndo_vflag >= 3 && ops->v != F_TLV_PDAT) {
947 if (pad)
948 ND_PRINT("%s %s (Length %u DataLen %u pad %u Bytes)\n",
949 ib, ops->s, tlvl, tll, pad);
950 else
951 ND_PRINT("%s %s (Length %u DataLen %u Bytes)\n",
952 ib, ops->s, tlvl, tll);
953 }
954
955 chk_op_type(ndo, type, op_msk, ops->op_msk);
956
957 if (ops->print(ndo, (const u_char *)pdtlv,
958 tll + pad + TLV_HDRL, op_msk,
959 indent + 2) == -1)
960 return -1;
961 len -= (TLV_HDRL + pad + tll);
962 } else {
963 ND_PRINT("Invalid path data content type 0x%x len %u\n",
964 type, tlvl);
965 pd_err:
966 if (tlvl) {
967 hex_print(ndo, "Bad Data val\n\t [",
968 pptr, len);
969 ND_PRINT("]\n");
970
971 return -1;
972 }
973 }
974 }
975 return len;
976
977 trunc:
978 nd_print_trunc(ndo);
979 return -1;
980 }
981
982 static int
983 pdata_print(netdissect_options *ndo,
984 const u_char * pptr, u_int len,
985 uint16_t op_msk, int indent)
986 {
987 const struct pathdata_h *pdh = (const struct pathdata_h *)pptr;
988 char *ib = indent_pr(indent, 0);
989 u_int minsize = 0;
990 int more_pd = 0;
991 uint16_t idcnt = 0;
992
993 ND_TCHECK_SIZE(pdh);
994 if (len < sizeof(struct pathdata_h))
995 goto trunc;
996 if (ndo->ndo_vflag >= 3) {
997 ND_PRINT("\n%sPathdata: Flags 0x%x ID count %u\n",
998 ib, GET_BE_U_2(pdh->pflags),
999 GET_BE_U_2(pdh->pIDcnt));
1000 }
1001
1002 if (GET_BE_U_2(pdh->pflags) & F_SELKEY) {
1003 op_msk |= B_KEYIN;
1004 }
1005
1006 /* Table GET Range operation */
1007 if (GET_BE_U_2(pdh->pflags) & F_SELTABRANGE) {
1008 op_msk |= B_TRNG;
1009 }
1010 /* Table SET append operation */
1011 if (GET_BE_U_2(pdh->pflags) & F_TABAPPEND) {
1012 op_msk |= B_APPND;
1013 }
1014
1015 pptr += sizeof(struct pathdata_h);
1016 len -= sizeof(struct pathdata_h);
1017 idcnt = GET_BE_U_2(pdh->pIDcnt);
1018 minsize = idcnt * 4;
1019 if (len < minsize) {
1020 ND_PRINT("\t\t\ttruncated IDs expected %uB got %uB\n", minsize,
1021 len);
1022 hex_print(ndo, "\t\t\tID Data[", pptr, len);
1023 ND_PRINT("]\n");
1024 return -1;
1025 }
1026
1027 if ((op_msk & B_TRNG) && (op_msk & B_KEYIN)) {
1028 ND_PRINT("\t\t\tIllegal to have both Table ranges and keys\n");
1029 return -1;
1030 }
1031
1032 more_pd = pdatacnt_print(ndo, pptr, len, idcnt, op_msk, indent);
1033 if (more_pd > 0) {
1034 int consumed = len - more_pd;
1035 pptr += consumed;
1036 len = more_pd;
1037 /* XXX: Argh, recurse some more */
1038 return recpdoptlv_print(ndo, pptr, len, op_msk, indent+1);
1039 } else
1040 return 0;
1041
1042 trunc:
1043 nd_print_trunc(ndo);
1044 return -1;
1045 }
1046
1047 static int
1048 genoptlv_print(netdissect_options *ndo,
1049 const u_char * pptr, u_int len,
1050 uint16_t op_msk, int indent)
1051 {
1052 const struct forces_tlv *pdtlv = (const struct forces_tlv *)pptr;
1053 uint16_t type;
1054 u_int tlvl;
1055 u_int invtlv;
1056 char *ib = indent_pr(indent, 0);
1057
1058 type = GET_BE_U_2(pdtlv->type);
1059 tlvl = GET_BE_U_2(pdtlv->length);
1060 invtlv = tlv_valid(tlvl, len);
1061 ND_PRINT("genoptlvprint - %s TLV type 0x%x len %u\n",
1062 tok2str(ForCES_TLV, NULL, type), type, tlvl);
1063 if (!invtlv) {
1064 /*
1065 * At this point, tlv_valid() has ensured that the TLV
1066 * length is large enough but not too large (it doesn't
1067 * go past the end of the containing TLV).
1068 */
1069 const u_char *dp = (const u_char *) TLV_DATA(pdtlv);
1070
1071 if (!ttlv_valid(type)) {
1072 ND_PRINT("%s TLV type 0x%x len %u\n",
1073 tok2str(ForCES_TLV_err, NULL, invtlv), type,
1074 tlvl);
1075 return -1;
1076 }
1077 if (ndo->ndo_vflag >= 3)
1078 ND_PRINT("%s%s, length %u (data length %u Bytes)",
1079 ib, tok2str(ForCES_TLV, NULL, type),
1080 tlvl, tlvl - TLV_HDRL);
1081
1082 return pdata_print(ndo, dp, tlvl - TLV_HDRL, op_msk, indent + 1);
1083 } else {
1084 ND_PRINT("\t\t\tInvalid ForCES TLV type=%x", type);
1085 return -1;
1086 }
1087 }
1088
1089 static int
1090 recpdoptlv_print(netdissect_options *ndo,
1091 const u_char * pptr, u_int len,
1092 uint16_t op_msk, int indent)
1093 {
1094 const struct forces_tlv *pdtlv = (const struct forces_tlv *)pptr;
1095
1096 while (len != 0) {
1097 uint16_t type, tlvl;
1098 u_int invtlv;
1099 char *ib;
1100 const u_char *dp;
1101
1102 tlvl = GET_BE_U_2(pdtlv->length);
1103 invtlv = tlv_valid(tlvl, len);
1104 if (invtlv) {
1105 break;
1106 }
1107
1108 /*
1109 * At this point, tlv_valid() has ensured that the TLV
1110 * length is large enough but not too large (it doesn't
1111 * go past the end of the containing TLV).
1112 */
1113 ib = indent_pr(indent, 0);
1114 type = GET_BE_U_2(pdtlv->type);
1115 dp = (const u_char *) TLV_DATA(pdtlv);
1116
1117 if (ndo->ndo_vflag >= 3)
1118 ND_PRINT("%s%s, length %u (data encapsulated %u Bytes)",
1119 ib, tok2str(ForCES_TLV, NULL, type),
1120 tlvl,
1121 tlvl - TLV_HDRL);
1122
1123 if (pdata_print(ndo, dp, tlvl - TLV_HDRL, op_msk, indent + 1) == -1)
1124 return -1;
1125 pdtlv = GO_NXT_TLV(pdtlv, len);
1126 }
1127
1128 if (len) {
1129 ND_PRINT("\n\t\tMessy PATHDATA TLV header, type (0x%x)\n\t\texcess of %u Bytes ",
1130 GET_BE_U_2(pdtlv->type),
1131 len - GET_BE_U_2(pdtlv->length));
1132 return -1;
1133 }
1134
1135 return 0;
1136 }
1137
1138 static int
1139 invoptlv_print(netdissect_options *ndo,
1140 const u_char * pptr, u_int len,
1141 uint16_t op_msk _U_, int indent)
1142 {
1143 char *ib = indent_pr(indent, 1);
1144
1145 if (ndo->ndo_vflag >= 3) {
1146 ND_PRINT("%sData[", ib + 1);
1147 hex_print(ndo, ib, pptr, len);
1148 ND_PRINT("%s]\n", ib);
1149 }
1150 return -1;
1151 }
1152
1153 static int
1154 otlv_print(netdissect_options *ndo,
1155 const struct forces_tlv *otlv, uint16_t op_msk _U_, int indent)
1156 {
1157 int rc = 0;
1158 const u_char *dp = (const u_char *) TLV_DATA(otlv);
1159 uint16_t type;
1160 u_int tll;
1161 char *ib = indent_pr(indent, 0);
1162 const struct optlv_h *ops;
1163
1164 /*
1165 * lfbselect_print() has ensured that GET_BE_U_2(otlv->length)
1166 * >= TLV_HDRL.
1167 */
1168 type = GET_BE_U_2(otlv->type);
1169 tll = GET_BE_U_2(otlv->length) - TLV_HDRL;
1170 ops = get_forces_optlv_h(type);
1171 if (ndo->ndo_vflag >= 3) {
1172 ND_PRINT("%sOper TLV %s(0x%x) length %u\n", ib, ops->s, type,
1173 GET_BE_U_2(otlv->length));
1174 }
1175 /* rest of ops must at least have 12B {pathinfo} */
1176 if (tll < OP_MIN_SIZ) {
1177 ND_PRINT("\t\tOper TLV %s(0x%x) length %u\n", ops->s, type,
1178 GET_BE_U_2(otlv->length));
1179 ND_PRINT("\t\tTruncated data size %u minimum required %u\n", tll,
1180 OP_MIN_SIZ);
1181 return invoptlv_print(ndo, dp, tll, ops->op_msk, indent);
1182
1183 }
1184
1185 /* XXX - do anything with ops->flags? */
1186 if(ops->print) {
1187 rc = ops->print(ndo, dp, tll, ops->op_msk, indent + 1);
1188 }
1189 return rc;
1190 }
1191
1192 #define ASTDLN 4
1193 #define ASTMCD 255
1194 static int
1195 asttlv_print(netdissect_options *ndo,
1196 const u_char * pptr, u_int len,
1197 uint16_t op_msk _U_, int indent)
1198 {
1199 uint32_t rescode;
1200 u_int dlen;
1201 char *ib = indent_pr(indent, 0);
1202
1203 /*
1204 * forces_type_print() has ensured that len (the TLV length)
1205 * >= TLV_HDRL.
1206 */
1207 dlen = len - TLV_HDRL;
1208 if (dlen != ASTDLN) {
1209 ND_PRINT("illegal ASTresult-TLV: %u bytes!\n", dlen);
1210 return -1;
1211 }
1212 rescode = GET_BE_U_4(pptr);
1213 if (rescode > ASTMCD) {
1214 ND_PRINT("illegal ASTresult result code: %u!\n", rescode);
1215 return -1;
1216 }
1217
1218 if (ndo->ndo_vflag >= 3) {
1219 ND_PRINT("Teardown reason:\n%s", ib);
1220 switch (rescode) {
1221 case 0:
1222 ND_PRINT("Normal Teardown");
1223 break;
1224 case 1:
1225 ND_PRINT("Loss of Heartbeats");
1226 break;
1227 case 2:
1228 ND_PRINT("Out of bandwidth");
1229 break;
1230 case 3:
1231 ND_PRINT("Out of Memory");
1232 break;
1233 case 4:
1234 ND_PRINT("Application Crash");
1235 break;
1236 default:
1237 ND_PRINT("Unknown Teardown reason");
1238 break;
1239 }
1240 ND_PRINT("(%x)\n%s", rescode, ib);
1241 }
1242 return 0;
1243 }
1244
1245 #define ASRDLN 4
1246 #define ASRMCD 3
1247 static int
1248 asrtlv_print(netdissect_options *ndo,
1249 const u_char * pptr, u_int len,
1250 uint16_t op_msk _U_, int indent)
1251 {
1252 uint32_t rescode;
1253 u_int dlen;
1254 char *ib = indent_pr(indent, 0);
1255
1256 /*
1257 * forces_type_print() has ensured that len (the TLV length)
1258 * >= TLV_HDRL.
1259 */
1260 dlen = len - TLV_HDRL;
1261 if (dlen != ASRDLN) { /* id, instance, oper tlv */
1262 ND_PRINT("illegal ASRresult-TLV: %u bytes!\n", dlen);
1263 return -1;
1264 }
1265 rescode = GET_BE_U_4(pptr);
1266
1267 if (rescode > ASRMCD) {
1268 ND_PRINT("illegal ASRresult result code: %u!\n", rescode);
1269 return -1;
1270 }
1271
1272 if (ndo->ndo_vflag >= 3) {
1273 ND_PRINT("\n%s", ib);
1274 switch (rescode) {
1275 case 0:
1276 ND_PRINT("Success ");
1277 break;
1278 case 1:
1279 ND_PRINT("FE ID invalid ");
1280 break;
1281 case 2:
1282 ND_PRINT("permission denied ");
1283 break;
1284 default:
1285 ND_PRINT("Unknown ");
1286 break;
1287 }
1288 ND_PRINT("(%x)\n%s", rescode, ib);
1289 }
1290 return 0;
1291 }
1292
1293 #if 0
1294 /*
1295 * XXX - not used.
1296 */
1297 static int
1298 gentltlv_print(netdissect_options *ndo,
1299 const u_char * pptr _U_, u_int len,
1300 uint16_t op_msk _U_, int indent _U_)
1301 {
1302 u_int dlen = len - TLV_HDRL;
1303
1304 if (dlen < 4) { /* at least 32 bits must exist */
1305 ND_PRINT("truncated TLV: %u bytes missing! ", 4 - dlen);
1306 return -1;
1307 }
1308 return 0;
1309 }
1310 #endif
1311
1312 #define RD_MIN 8
1313
1314 static int
1315 print_metailv(netdissect_options *ndo,
1316 const u_char * pptr, uint16_t op_msk _U_, int indent)
1317 {
1318 u_int rlen;
1319 char *ib = indent_pr(indent, 0);
1320 /* XXX: check header length */
1321 const struct forces_ilv *ilv = (const struct forces_ilv *)pptr;
1322
1323 /*
1324 * print_metatlv() has ensured that len (what remains in the
1325 * ILV) >= ILV_HDRL.
1326 */
1327 rlen = GET_BE_U_4(ilv->length) - ILV_HDRL;
1328 ND_PRINT("%sMetaID 0x%x length %u\n", ib, GET_BE_U_4(ilv->type),
1329 GET_BE_U_4(ilv->length));
1330 if (ndo->ndo_vflag >= 3) {
1331 hex_print(ndo, "\t\t[", ILV_DATA(ilv), rlen);
1332 ND_PRINT(" ]\n");
1333 }
1334 return 0;
1335 }
1336
1337 static int
1338 print_metatlv(netdissect_options *ndo,
1339 const u_char * pptr, u_int len,
1340 uint16_t op_msk _U_, int indent)
1341 {
1342 u_int dlen;
1343 char *ib = indent_pr(indent, 0);
1344 u_int rlen;
1345 const struct forces_ilv *ilv = (const struct forces_ilv *)pptr;
1346 int invilv;
1347
1348 /*
1349 * redirect_print() has ensured that len (what remains in the
1350 * TLV) >= TLV_HDRL.
1351 */
1352 dlen = len - TLV_HDRL;
1353 rlen = dlen;
1354 ND_PRINT("\n%s METADATA length %u\n", ib, rlen);
1355 while (rlen != 0) {
1356 invilv = ilv_valid(ndo, ilv, rlen);
1357 if (invilv) {
1358 break;
1359 }
1360
1361 /*
1362 * At this point, ilv_valid() has ensured that the ILV
1363 * length is large enough but not too large (it doesn't
1364 * go past the end of the containing TLV).
1365 */
1366 print_metailv(ndo, (const u_char *) ilv, 0, indent + 1);
1367 ilv = GO_NXT_ILV(ilv, rlen);
1368 }
1369
1370 return 0;
1371 }
1372
1373
1374 static int
1375 print_reddata(netdissect_options *ndo,
1376 const u_char * pptr, u_int len,
1377 uint16_t op_msk _U_, int indent)
1378 {
1379 u_int dlen;
1380 char *ib = indent_pr(indent, 0);
1381 u_int rlen;
1382
1383 dlen = len - TLV_HDRL;
1384 rlen = dlen;
1385 ND_PRINT("\n%s Redirect Data length %u\n", ib, rlen);
1386
1387 if (ndo->ndo_vflag >= 3) {
1388 ND_PRINT("\t\t[");
1389 hex_print(ndo, "\n\t\t", pptr, rlen);
1390 ND_PRINT("\n\t\t]");
1391 }
1392
1393 return 0;
1394 }
1395
1396 static int
1397 redirect_print(netdissect_options *ndo,
1398 const u_char * pptr, u_int len,
1399 uint16_t op_msk _U_, int indent)
1400 {
1401 const struct forces_tlv *tlv = (const struct forces_tlv *)pptr;
1402 u_int dlen;
1403 u_int rlen;
1404 u_int invtlv;
1405
1406 /*
1407 * forces_type_print() has ensured that len (the TLV length)
1408 * >= TLV_HDRL.
1409 */
1410 dlen = len - TLV_HDRL;
1411 if (dlen <= RD_MIN) {
1412 ND_PRINT("\n\t\ttruncated Redirect TLV: %u bytes missing! ",
1413 RD_MIN - dlen);
1414 return -1;
1415 }
1416
1417 rlen = dlen;
1418 indent += 1;
1419 while (rlen != 0) {
1420 uint16_t type, tlvl;
1421
1422 type = GET_BE_U_2(tlv->type);
1423 tlvl = GET_BE_U_2(tlv->length);
1424 invtlv = tlv_valid(tlvl, rlen);
1425 if (invtlv) {
1426 ND_PRINT("Bad Redirect data\n");
1427 break;
1428 }
1429
1430 /*
1431 * At this point, tlv_valid() has ensured that the TLV
1432 * length is large enough but not too large (it doesn't
1433 * go past the end of the containing TLV).
1434 */
1435 if (type == F_TLV_METD) {
1436 print_metatlv(ndo, (const u_char *) TLV_DATA(tlv),
1437 tlvl, 0,
1438 indent);
1439 } else if (type == F_TLV_REDD) {
1440 print_reddata(ndo, (const u_char *) TLV_DATA(tlv),
1441 tlvl, 0,
1442 indent);
1443 } else {
1444 ND_PRINT("Unknown REDIRECT TLV 0x%x len %u\n",
1445 type,
1446 tlvl);
1447 }
1448
1449 tlv = GO_NXT_TLV(tlv, rlen);
1450 }
1451
1452 if (rlen) {
1453 ND_PRINT("\n\t\tMessy Redirect TLV header, type (0x%x)\n\t\texcess of %u Bytes ",
1454 GET_BE_U_2(tlv->type),
1455 rlen - GET_BE_U_2(tlv->length));
1456 return -1;
1457 }
1458
1459 return 0;
1460 }
1461
1462 #define OP_OFF 8
1463 #define OP_MIN 12
1464
1465 static int
1466 lfbselect_print(netdissect_options *ndo,
1467 const u_char * pptr, u_int len,
1468 uint16_t op_msk, int indent)
1469 {
1470 const struct forces_lfbsh *lfbs;
1471 const struct forces_tlv *otlv;
1472 char *ib = indent_pr(indent, 0);
1473 u_int dlen;
1474 u_int rlen;
1475 u_int invtlv;
1476
1477 /*
1478 * forces_type_print() has ensured that len (the TLV length)
1479 * >= TLV_HDRL.
1480 */
1481 dlen = len - TLV_HDRL;
1482 if (dlen <= OP_MIN) { /* id, instance, oper tlv header .. */
1483 ND_PRINT("\n\t\ttruncated lfb selector: %u bytes missing! ",
1484 OP_MIN - dlen);
1485 return -1;
1486 }
1487
1488 /*
1489 * At this point, we know that dlen > OP_MIN; OP_OFF < OP_MIN, so
1490 * we also know that it's > OP_OFF.
1491 */
1492 rlen = dlen - OP_OFF;
1493
1494 lfbs = (const struct forces_lfbsh *)pptr;
1495 ND_TCHECK_SIZE(lfbs);
1496 if (ndo->ndo_vflag >= 3) {
1497 ND_PRINT("\n%s%s(Classid %x) instance %x\n",
1498 ib,
1499 tok2str(ForCES_LFBs, NULL, GET_BE_U_4(lfbs->class)),
1500 GET_BE_U_4(lfbs->class),
1501 GET_BE_U_4(lfbs->instance));
1502 }
1503
1504 otlv = (const struct forces_tlv *)(lfbs + 1);
1505
1506 indent += 1;
1507 while (rlen != 0) {
1508 uint16_t type, tlvl;
1509
1510 type = GET_BE_U_2(otlv->type);
1511 tlvl = GET_BE_U_2(otlv->length);
1512 invtlv = tlv_valid(tlvl, rlen);
1513 if (invtlv)
1514 break;
1515
1516 /*
1517 * At this point, tlv_valid() has ensured that the TLV
1518 * length is large enough but not too large (it doesn't
1519 * go past the end of the containing TLV).
1520 */
1521 if (op_valid(type, op_msk)) {
1522 otlv_print(ndo, otlv, 0, indent);
1523 } else {
1524 if (ndo->ndo_vflag < 3)
1525 ND_PRINT("\n");
1526 ND_PRINT("\t\tINValid oper-TLV type 0x%x length %u for this ForCES message\n",
1527 type, tlvl);
1528 invoptlv_print(ndo, (const u_char *)otlv, rlen, 0, indent);
1529 }
1530 otlv = GO_NXT_TLV(otlv, rlen);
1531 }
1532
1533 if (rlen) {
1534 ND_PRINT("\n\t\tMessy oper TLV header, type (0x%x)\n\t\texcess of %u Bytes ",
1535 GET_BE_U_2(otlv->type),
1536 rlen - GET_BE_U_2(otlv->length));
1537 return -1;
1538 }
1539
1540 return 0;
1541
1542 trunc:
1543 nd_print_trunc(ndo);
1544 return -1;
1545 }
1546
1547 static int
1548 forces_type_print(netdissect_options *ndo,
1549 const u_char * pptr, const struct forcesh *fhdr _U_,
1550 u_int mlen, const struct tom_h *tops)
1551 {
1552 const struct forces_tlv *tltlv;
1553 u_int rlen;
1554 u_int invtlv;
1555 int rc = 0;
1556 u_int ttlv = 0;
1557
1558 /*
1559 * forces_print() has already checked that mlen >= ForCES_HDRL
1560 * by calling ForCES_HLN_VALID().
1561 */
1562 rlen = mlen - ForCES_HDRL;
1563
1564 if (rlen > TLV_HLN) {
1565 if (tops->flags & ZERO_TTLV) {
1566 ND_PRINT("<0x%x>Illegal Top level TLV!\n", tops->flags);
1567 return -1;
1568 }
1569 } else {
1570 if (tops->flags & ZERO_MORE_TTLV)
1571 return 0;
1572 if (tops->flags & ONE_MORE_TTLV) {
1573 ND_PRINT("\tTop level TLV Data missing!\n");
1574 return -1;
1575 }
1576 }
1577
1578 if (tops->flags & ZERO_TTLV) {
1579 return 0;
1580 }
1581
1582 ttlv = tops->flags >> 4;
1583 tltlv = GET_TOP_TLV(pptr);
1584
1585 /*XXX: 15 top level tlvs will probably be fine
1586 You are nuts if you send more ;-> */
1587 while (rlen != 0) {
1588 uint16_t type, tlvl;
1589
1590 type = GET_BE_U_2(tltlv->type);
1591 tlvl = GET_BE_U_2(tltlv->length);
1592 invtlv = tlv_valid(tlvl, rlen);
1593 if (invtlv)
1594 break;
1595
1596 /*
1597 * At this point, tlv_valid() has ensured that the TLV
1598 * length is large enough but not too large (it doesn't
1599 * go past the end of the packet).
1600 */
1601 if (!ttlv_valid(type)) {
1602 ND_PRINT("\n\tInvalid ForCES Top TLV type=0x%x",
1603 type);
1604 return -1;
1605 }
1606
1607 if (ndo->ndo_vflag >= 3)
1608 ND_PRINT("\t%s, length %u (data length %u Bytes)",
1609 tok2str(ForCES_TLV, NULL, type),
1610 tlvl,
1611 tlvl - TLV_HDRL);
1612
1613 rc = tops->print(ndo, (const u_char *) TLV_DATA(tltlv),
1614 tlvl,
1615 tops->op_msk, 9);
1616 if (rc < 0) {
1617 return -1;
1618 }
1619 tltlv = GO_NXT_TLV(tltlv, rlen);
1620 ttlv--;
1621 if (ttlv <= 0)
1622 break;
1623 }
1624 /*
1625 * XXX - if ttlv != 0, does that mean that the packet was too
1626 * short, and didn't have *enough* TLVs in it?
1627 */
1628 if (rlen) {
1629 ND_PRINT("\tMess TopTLV header: min %u, total %u advertised %u ",
1630 TLV_HDRL, rlen, GET_BE_U_2(tltlv->length));
1631 return -1;
1632 }
1633
1634 return 0;
1635 }
1636
1637 void
1638 forces_print(netdissect_options *ndo,
1639 const u_char * pptr, u_int len)
1640 {
1641 const struct forcesh *fhdr;
1642 u_int mlen;
1643 uint32_t flg_raw;
1644 uint8_t tom;
1645 const struct tom_h *tops;
1646 int rc = 0;
1647
1648 ndo->ndo_protocol = "forces";
1649 fhdr = (const struct forcesh *)pptr;
1650 ND_TCHECK_SIZE(fhdr);
1651 tom = GET_U_1(fhdr->fm_tom);
1652 if (!tom_valid(tom)) {
1653 ND_PRINT("Invalid ForCES message type %u\n", tom);
1654 goto error;
1655 }
1656
1657 mlen = ForCES_BLN(fhdr);
1658
1659 tops = get_forces_tom(tom);
1660 if (tops->v == TOM_RSVD) {
1661 ND_PRINT("\n\tUnknown ForCES message type=0x%x", tom);
1662 goto error;
1663 }
1664
1665 ND_PRINT("\n\tForCES %s ", tops->s);
1666 if (!ForCES_HLN_VALID(mlen, len)) {
1667 ND_PRINT("Illegal ForCES pkt len - min %u, total recvd %u, advertised %u ",
1668 ForCES_HDRL, len, ForCES_BLN(fhdr));
1669 goto error;
1670 }
1671
1672 flg_raw = GET_BE_U_4(pptr + 20);
1673 if (ndo->ndo_vflag >= 1) {
1674 ND_PRINT("\n\tForCES Version %u len %uB flags 0x%08x ",
1675 ForCES_V(fhdr), mlen, flg_raw);
1676 ND_PRINT("\n\tSrcID 0x%x(%s) DstID 0x%x(%s) Correlator 0x%" PRIx64,
1677 ForCES_SID(fhdr), ForCES_node(ForCES_SID(fhdr)),
1678 ForCES_DID(fhdr), ForCES_node(ForCES_DID(fhdr)),
1679 GET_BE_U_8(fhdr->fm_cor));
1680
1681 }
1682 if (ndo->ndo_vflag >= 2) {
1683 ND_PRINT("\n\tForCES flags:\n\t %s(0x%x), prio=%u, %s(0x%x),\n\t %s(0x%x), %s(0x%x)\n",
1684 tok2str(ForCES_ACKs, "ACKUnknown", ForCES_ACK(fhdr)),
1685 ForCES_ACK(fhdr),
1686 ForCES_PRI(fhdr),
1687 tok2str(ForCES_EMs, "EMUnknown", ForCES_EM(fhdr)),
1688 ForCES_EM(fhdr),
1689 tok2str(ForCES_ATs, "ATUnknown", ForCES_AT(fhdr)),
1690 ForCES_AT(fhdr),
1691 tok2str(ForCES_TPs, "TPUnknown", ForCES_TP(fhdr)),
1692 ForCES_TP(fhdr));
1693 ND_PRINT("\t Extra flags: rsv(b5-7) 0x%x rsv(b13-31) 0x%x\n",
1694 ForCES_RS1(fhdr), ForCES_RS2(fhdr));
1695 }
1696 rc = forces_type_print(ndo, pptr, fhdr, mlen, tops);
1697 if (rc < 0) {
1698 error:
1699 hex_print(ndo, "\n\t[", pptr, len);
1700 ND_PRINT("\n\t]");
1701 return;
1702 }
1703
1704 if (ndo->ndo_vflag >= 4) {
1705 ND_PRINT("\n\t Raw ForCES message\n\t [");
1706 hex_print(ndo, "\n\t ", pptr, len);
1707 ND_PRINT("\n\t ]");
1708 }
1709 return;
1710
1711 trunc:
1712 nd_print_trunc(ndo);
1713 }
[mirror] the TCPdump network dissector