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Revert "TODO epan/dissectors/asn1/kerberos/packet-kerberos-template.c new GSS flags"
[wireshark-sm.git] / epan / dissectors / packet-goose.c
blob7e7b6524e3ea44fe8a67abd6919de68d113c26d5
1 /* Do not modify this file. Changes will be overwritten. */
2 /* Generated automatically by the ASN.1 to Wireshark dissector compiler */
3 /* packet-goose.c */
4 /* asn2wrs.py -b -q -L -p goose -c ./goose.cnf -s ./packet-goose-template -D . -O ../.. goose.asn */
5
6 /* packet-goose.c
7 * Routines for IEC 61850 GOOSE packet dissection
8 * Martin Lutz 2008
9 *
10 * Routines for IEC 61850 R-GOOSE packet dissection
11 * Dordije Manojlovic 2020
12 *
13 * Wireshark - Network traffic analyzer
14 * By Gerald Combs <gerald@wireshark.org>
15 * Copyright 1998 Gerald Combs
16 *
17 * SPDX-License-Identifier: GPL-2.0-or-later
18 */
19
20 #include "config.h"
21
22 #include <epan/packet.h>
23 #include <epan/asn1.h>
24 #include <epan/proto_data.h>
25 #include <epan/etypes.h>
26 #include <epan/expert.h>
27 #include <wsutil/array.h>
28
29 #include "packet-ber.h"
30 #include "packet-acse.h"
31
32 #define GOOSE_PNAME "GOOSE"
33 #define GOOSE_PSNAME "GOOSE"
34 #define GOOSE_PFNAME "goose"
35
36 #define R_GOOSE_PNAME "R-GOOSE"
37 #define R_GOOSE_PSNAME "R-GOOSE"
38 #define R_GOOSE_PFNAME "r-goose"
39
40 void proto_register_goose(void);
41 void proto_reg_handoff_goose(void);
42
43 /* Initialize the protocol and registered fields */
44 static int proto_goose;
45 static int proto_r_goose;
46
47 static int hf_goose_session_header;
48 static int hf_goose_spdu_id;
49 static int hf_goose_session_hdr_length;
50 static int hf_goose_hdr_length;
51 static int hf_goose_content_id;
52 static int hf_goose_spdu_lenth;
53 static int hf_goose_spdu_num;
54 static int hf_goose_version;
55 static int hf_goose_security_info;
56 static int hf_goose_current_key_t;
57 static int hf_goose_next_key_t;
58 static int hf_goose_key_id;
59 static int hf_goose_init_vec_length;
60 static int hf_goose_init_vec;
61 static int hf_goose_session_user_info;
62 static int hf_goose_payload;
63 static int hf_goose_payload_length;
64 static int hf_goose_apdu_tag;
65 static int hf_goose_apdu_simulation;
66 static int hf_goose_apdu_appid;
67 static int hf_goose_apdu_length;
68 static int hf_goose_padding_tag;
69 static int hf_goose_padding_length;
70 static int hf_goose_padding;
71 static int hf_goose_hmac;
72 static int hf_goose_appid;
73 static int hf_goose_length;
74 static int hf_goose_reserve1;
75 static int hf_goose_reserve1_s_bit;
76 static int hf_goose_reserve2;
77 static int hf_goose_float_value;
78
79
80 /* Bit fields in the Reserved fields */
81 #define F_RESERVE1_S_BIT 0x8000
82
83 /* GOOSE stored data for expert info verifications */
84 typedef struct _goose_chk_data{
85 bool s_bit;
86 }goose_chk_data_t;
87 #define GOOSE_CHK_DATA_LEN (sizeof(goose_chk_data_t))
88
89 static expert_field ei_goose_mal_utctime;
90 static expert_field ei_goose_zero_pdu;
91 static expert_field ei_goose_invalid_sim;
92 static expert_field ei_goose_bogus_length;
93
94 #define SINGLE_FLOAT_EXP_BITS 8
95 #define FLOAT_ENC_LENGTH 5
96
97 static int hf_goose_gseMngtPdu; /* GSEMngtPdu */
98 static int hf_goose_goosePdu; /* IECGoosePdu */
99 static int hf_goose_stateID; /* INTEGER */
100 static int hf_goose_requestResp; /* RequestResponse */
101 static int hf_goose_requests; /* GSEMngtRequests */
102 static int hf_goose_responses; /* GSEMngtResponses */
103 static int hf_goose_getGoReference; /* GetReferenceRequestPdu */
104 static int hf_goose_getGOOSEElementNumber; /* GetElementRequestPdu */
105 static int hf_goose_getGsReference; /* GetReferenceRequestPdu */
106 static int hf_goose_getGSSEDataOffset; /* GetElementRequestPdu */
107 static int hf_goose_gseMngtNotSupported; /* NULL */
108 static int hf_goose_gseMngtResponses_GetGOReference; /* GSEMngtResponsePdu */
109 static int hf_goose_gseMngtResponses_GetGOOSEElementNumber; /* GSEMngtResponsePdu */
110 static int hf_goose_gseMngtResponses_GetGSReference; /* GSEMngtResponsePdu */
111 static int hf_goose_gseMngtResponses_GetGSSEDataOffset; /* GSEMngtResponsePdu */
112 static int hf_goose_ident; /* VisibleString */
113 static int hf_goose_getReferenceRequest_offset; /* T_getReferenceRequest_offset */
114 static int hf_goose_getReferenceRequest_offset_item; /* INTEGER */
115 static int hf_goose_references; /* T_references */
116 static int hf_goose_references_item; /* VisibleString */
117 static int hf_goose_confRev; /* INTEGER */
118 static int hf_goose_posNeg; /* PositiveNegative */
119 static int hf_goose_responsePositive; /* T_responsePositive */
120 static int hf_goose_datSet; /* VisibleString */
121 static int hf_goose_result; /* SEQUENCE_OF_RequestResults */
122 static int hf_goose_result_item; /* RequestResults */
123 static int hf_goose_responseNegative; /* GlbErrors */
124 static int hf_goose_offset; /* INTEGER */
125 static int hf_goose_reference; /* IA5String */
126 static int hf_goose_error; /* ErrorReason */
127 static int hf_goose_gocbRef; /* VisibleString */
128 static int hf_goose_timeAllowedtoLive; /* INTEGER */
129 static int hf_goose_goID; /* VisibleString */
130 static int hf_goose_t; /* UtcTime */
131 static int hf_goose_stNum; /* INTEGER */
132 static int hf_goose_sqNum; /* INTEGER */
133 static int hf_goose_simulation; /* T_simulation */
134 static int hf_goose_ndsCom; /* BOOLEAN */
135 static int hf_goose_numDatSetEntries; /* INTEGER */
136 static int hf_goose_allData; /* SEQUENCE_OF_Data */
137 static int hf_goose_allData_item; /* Data */
138 static int hf_goose_array; /* SEQUENCE_OF_Data */
139 static int hf_goose_array_item; /* Data */
140 static int hf_goose_structure; /* SEQUENCE_OF_Data */
141 static int hf_goose_structure_item; /* Data */
142 static int hf_goose_boolean; /* BOOLEAN */
143 static int hf_goose_bit_string; /* BIT_STRING */
144 static int hf_goose_integer; /* INTEGER */
145 static int hf_goose_unsigned; /* INTEGER */
146 static int hf_goose_floating_point; /* FloatingPoint */
147 static int hf_goose_real; /* REAL */
148 static int hf_goose_octet_string; /* OCTET_STRING */
149 static int hf_goose_visible_string; /* VisibleString */
150 static int hf_goose_binary_time; /* TimeOfDay */
151 static int hf_goose_bcd; /* INTEGER */
152 static int hf_goose_booleanArray; /* BIT_STRING */
153 static int hf_goose_objId; /* OBJECT_IDENTIFIER */
154 static int hf_goose_mMSString; /* MMSString */
155 static int hf_goose_utc_time; /* UtcTime */
156
157 /* Initialize the subtree pointers */
158 static int ett_r_goose;
159 static int ett_session_header;
160 static int ett_security_info;
161 static int ett_session_user_info;
162 static int ett_payload;
163 static int ett_padding;
164 static int ett_goose;
165 static int ett_reserve1;
166 static int ett_expert_inf_sim;
167
168 static int ett_goose_GOOSEpdu;
169 static int ett_goose_GSEMngtPdu;
170 static int ett_goose_RequestResponse;
171 static int ett_goose_GSEMngtRequests;
172 static int ett_goose_GSEMngtResponses;
173 static int ett_goose_GetReferenceRequestPdu;
174 static int ett_goose_T_getReferenceRequest_offset;
175 static int ett_goose_GetElementRequestPdu;
176 static int ett_goose_T_references;
177 static int ett_goose_GSEMngtResponsePdu;
178 static int ett_goose_PositiveNegative;
179 static int ett_goose_T_responsePositive;
180 static int ett_goose_SEQUENCE_OF_RequestResults;
181 static int ett_goose_RequestResults;
182 static int ett_goose_IECGoosePdu;
183 static int ett_goose_SEQUENCE_OF_Data;
184 static int ett_goose_Data;
185
186 /*--- Cyclic dependencies ---*/
187
188 /* Data -> Data/array -> Data */
189 static int dissect_goose_Data(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_);
190
191
192
193
194 static int
195 dissect_goose_INTEGER(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
196 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
197 NULL);
198
199 return offset;
200 }
201
202
203
204 static int
205 dissect_goose_VisibleString(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
206 offset = dissect_ber_restricted_string(implicit_tag, BER_UNI_TAG_VisibleString,
207 actx, tree, tvb, offset, hf_index,
208 NULL);
209
210 return offset;
211 }
212
213
214 static const ber_sequence_t T_getReferenceRequest_offset_sequence_of[1] = {
215 { &hf_goose_getReferenceRequest_offset_item, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_goose_INTEGER },
216 };
217
218 static int
219 dissect_goose_T_getReferenceRequest_offset(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
220 offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
221 T_getReferenceRequest_offset_sequence_of, hf_index, ett_goose_T_getReferenceRequest_offset);
222
223 return offset;
224 }
225
226
227 static const ber_sequence_t GetReferenceRequestPdu_sequence[] = {
228 { &hf_goose_ident , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
229 { &hf_goose_getReferenceRequest_offset, BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_T_getReferenceRequest_offset },
230 { NULL, 0, 0, 0, NULL }
231 };
232
233 static int
234 dissect_goose_GetReferenceRequestPdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
235 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
236 GetReferenceRequestPdu_sequence, hf_index, ett_goose_GetReferenceRequestPdu);
237
238 return offset;
239 }
240
241
242 static const ber_sequence_t T_references_sequence_of[1] = {
243 { &hf_goose_references_item, BER_CLASS_UNI, BER_UNI_TAG_VisibleString, BER_FLAGS_NOOWNTAG, dissect_goose_VisibleString },
244 };
245
246 static int
247 dissect_goose_T_references(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
248 offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
249 T_references_sequence_of, hf_index, ett_goose_T_references);
250
251 return offset;
252 }
253
254
255 static const ber_sequence_t GetElementRequestPdu_sequence[] = {
256 { &hf_goose_ident , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
257 { &hf_goose_references , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_T_references },
258 { NULL, 0, 0, 0, NULL }
259 };
260
261 static int
262 dissect_goose_GetElementRequestPdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
263 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
264 GetElementRequestPdu_sequence, hf_index, ett_goose_GetElementRequestPdu);
265
266 return offset;
267 }
268
269
270 static const value_string goose_GSEMngtRequests_vals[] = {
271 { 1, "getGoReference" },
272 { 2, "getGOOSEElementNumber" },
273 { 3, "getGsReference" },
274 { 4, "getGSSEDataOffset" },
275 { 0, NULL }
276 };
277
278 static const ber_choice_t GSEMngtRequests_choice[] = {
279 { 1, &hf_goose_getGoReference, BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_GetReferenceRequestPdu },
280 { 2, &hf_goose_getGOOSEElementNumber, BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_GetElementRequestPdu },
281 { 3, &hf_goose_getGsReference, BER_CLASS_CON, 3, BER_FLAGS_IMPLTAG, dissect_goose_GetReferenceRequestPdu },
282 { 4, &hf_goose_getGSSEDataOffset, BER_CLASS_CON, 4, BER_FLAGS_IMPLTAG, dissect_goose_GetElementRequestPdu },
283 { 0, NULL, 0, 0, 0, NULL }
284 };
285
286 static int
287 dissect_goose_GSEMngtRequests(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
288 offset = dissect_ber_choice(actx, tree, tvb, offset,
289 GSEMngtRequests_choice, hf_index, ett_goose_GSEMngtRequests,
290 NULL);
291
292 return offset;
293 }
294
295
296
297 static int
298 dissect_goose_NULL(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
299 offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index);
300
301 return offset;
302 }
303
304
305
306 static int
307 dissect_goose_IA5String(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
308 offset = dissect_ber_restricted_string(implicit_tag, BER_UNI_TAG_IA5String,
309 actx, tree, tvb, offset, hf_index,
310 NULL);
311
312 return offset;
313 }
314
315
316 static const value_string goose_ErrorReason_vals[] = {
317 { 0, "other" },
318 { 1, "notFound" },
319 { 0, NULL }
320 };
321
322
323 static int
324 dissect_goose_ErrorReason(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
325 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
326 NULL);
327
328 return offset;
329 }
330
331
332 static const value_string goose_RequestResults_vals[] = {
333 { 0, "offset" },
334 { 1, "reference" },
335 { 2, "error" },
336 { 0, NULL }
337 };
338
339 static const ber_choice_t RequestResults_choice[] = {
340 { 0, &hf_goose_offset , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
341 { 1, &hf_goose_reference , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_IA5String },
342 { 2, &hf_goose_error , BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_ErrorReason },
343 { 0, NULL, 0, 0, 0, NULL }
344 };
345
346 static int
347 dissect_goose_RequestResults(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
348 offset = dissect_ber_choice(actx, tree, tvb, offset,
349 RequestResults_choice, hf_index, ett_goose_RequestResults,
350 NULL);
351
352 return offset;
353 }
354
355
356 static const ber_sequence_t SEQUENCE_OF_RequestResults_sequence_of[1] = {
357 { &hf_goose_result_item , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_goose_RequestResults },
358 };
359
360 static int
361 dissect_goose_SEQUENCE_OF_RequestResults(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
362 offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
363 SEQUENCE_OF_RequestResults_sequence_of, hf_index, ett_goose_SEQUENCE_OF_RequestResults);
364
365 return offset;
366 }
367
368
369 static const ber_sequence_t T_responsePositive_sequence[] = {
370 { &hf_goose_datSet , BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
371 { &hf_goose_result , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_SEQUENCE_OF_RequestResults },
372 { NULL, 0, 0, 0, NULL }
373 };
374
375 static int
376 dissect_goose_T_responsePositive(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
377 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
378 T_responsePositive_sequence, hf_index, ett_goose_T_responsePositive);
379
380 return offset;
381 }
382
383
384 static const value_string goose_GlbErrors_vals[] = {
385 { 0, "other" },
386 { 1, "unknownControlBlock" },
387 { 2, "responseTooLarge" },
388 { 3, "controlBlockConfigurationError" },
389 { 0, NULL }
390 };
391
392
393 static int
394 dissect_goose_GlbErrors(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
395 offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index,
396 NULL);
397
398 return offset;
399 }
400
401
402 static const value_string goose_PositiveNegative_vals[] = {
403 { 2, "responsePositive" },
404 { 3, "responseNegative" },
405 { 0, NULL }
406 };
407
408 static const ber_choice_t PositiveNegative_choice[] = {
409 { 2, &hf_goose_responsePositive, BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_T_responsePositive },
410 { 3, &hf_goose_responseNegative, BER_CLASS_CON, 3, BER_FLAGS_IMPLTAG, dissect_goose_GlbErrors },
411 { 0, NULL, 0, 0, 0, NULL }
412 };
413
414 static int
415 dissect_goose_PositiveNegative(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
416 offset = dissect_ber_choice(actx, tree, tvb, offset,
417 PositiveNegative_choice, hf_index, ett_goose_PositiveNegative,
418 NULL);
419
420 return offset;
421 }
422
423
424 static const ber_sequence_t GSEMngtResponsePdu_sequence[] = {
425 { &hf_goose_ident , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
426 { &hf_goose_confRev , BER_CLASS_CON, 1, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
427 { &hf_goose_posNeg , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_goose_PositiveNegative },
428 { NULL, 0, 0, 0, NULL }
429 };
430
431 static int
432 dissect_goose_GSEMngtResponsePdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
433 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
434 GSEMngtResponsePdu_sequence, hf_index, ett_goose_GSEMngtResponsePdu);
435
436 return offset;
437 }
438
439
440 static const value_string goose_GSEMngtResponses_vals[] = {
441 { 0, "gseMngtNotSupported" },
442 { 1, "getGoReference" },
443 { 2, "getGOOSEElementNumber" },
444 { 3, "getGsReference" },
445 { 4, "getGSSEDataOffset" },
446 { 0, NULL }
447 };
448
449 static const ber_choice_t GSEMngtResponses_choice[] = {
450 { 0, &hf_goose_gseMngtNotSupported, BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_NULL },
451 { 1, &hf_goose_gseMngtResponses_GetGOReference, BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtResponsePdu },
452 { 2, &hf_goose_gseMngtResponses_GetGOOSEElementNumber, BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtResponsePdu },
453 { 3, &hf_goose_gseMngtResponses_GetGSReference, BER_CLASS_CON, 3, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtResponsePdu },
454 { 4, &hf_goose_gseMngtResponses_GetGSSEDataOffset, BER_CLASS_CON, 4, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtResponsePdu },
455 { 0, NULL, 0, 0, 0, NULL }
456 };
457
458 static int
459 dissect_goose_GSEMngtResponses(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
460 offset = dissect_ber_choice(actx, tree, tvb, offset,
461 GSEMngtResponses_choice, hf_index, ett_goose_GSEMngtResponses,
462 NULL);
463
464 return offset;
465 }
466
467
468 static const value_string goose_RequestResponse_vals[] = {
469 { 1, "requests" },
470 { 2, "responses" },
471 { 0, NULL }
472 };
473
474 static const ber_choice_t RequestResponse_choice[] = {
475 { 1, &hf_goose_requests , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtRequests },
476 { 2, &hf_goose_responses , BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtResponses },
477 { 0, NULL, 0, 0, 0, NULL }
478 };
479
480 static int
481 dissect_goose_RequestResponse(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
482 offset = dissect_ber_choice(actx, tree, tvb, offset,
483 RequestResponse_choice, hf_index, ett_goose_RequestResponse,
484 NULL);
485
486 return offset;
487 }
488
489
490 static const ber_sequence_t GSEMngtPdu_sequence[] = {
491 { &hf_goose_stateID , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
492 { &hf_goose_requestResp , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_goose_RequestResponse },
493 { NULL, 0, 0, 0, NULL }
494 };
495
496 static int
497 dissect_goose_GSEMngtPdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
498 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
499 GSEMngtPdu_sequence, hf_index, ett_goose_GSEMngtPdu);
500
501 return offset;
502 }
503
504
505
506 static int
507 dissect_goose_UtcTime(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
508
509 uint32_t len;
510 uint32_t seconds;
511 uint32_t fraction;
512 uint32_t nanoseconds;
513 nstime_t ts;
514 char * ptime;
515
516 len = tvb_reported_length_remaining(tvb, offset);
517
518 if(len != 8)
519 {
520 proto_tree_add_expert(tree, actx->pinfo, &ei_goose_mal_utctime, tvb, offset, len);
521 if(hf_index > 0)
522 {
523 proto_tree_add_string(tree, hf_index, tvb, offset, len, "????");
524 }
525 return offset;
526 }
527
528 seconds = tvb_get_ntohl(tvb, offset);
529 fraction = tvb_get_ntoh24(tvb, offset+4) * 0x100; /* Only 3 bytes are recommended */
530 nanoseconds = (uint32_t)( ((uint64_t)fraction * UINT64_C(1000000000)) / UINT64_C(0x100000000) ) ;
531
532 ts.secs = seconds;
533 ts.nsecs = nanoseconds;
534
535 ptime = abs_time_to_str(actx->pinfo->pool, &ts, ABSOLUTE_TIME_UTC, true);
536
537 if(hf_index > 0)
538 {
539 proto_tree_add_string(tree, hf_index, tvb, offset, len, ptime);
540 }
541
542
543 return offset;
544 }
545
546
547
548 static int
549 dissect_goose_T_simulation(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
550 bool value;
551 uint32_t len = tvb_reported_length_remaining(tvb, offset);
552 int origin_offset = offset;
553 offset = dissect_ber_boolean(implicit_tag, actx, tree, tvb, offset, hf_index, &value);
554
555 if((actx->private_data) && (actx->created_item)){
556 goose_chk_data_t *data_chk = (goose_chk_data_t *)actx->private_data;
557 proto_tree *expert_inf_tree = NULL;
558 /* S bit set and Simulation attribute clear: reject as invalid GOOSE */
559 if((data_chk->s_bit == true) && (value == false)){
560 /* It really looks better showed as a new subtree */
561 expert_inf_tree = proto_item_add_subtree(actx->created_item, ett_expert_inf_sim);
562 proto_tree_add_expert(expert_inf_tree, actx->pinfo, &ei_goose_invalid_sim, tvb, origin_offset, len);
563 }
564 }
565
566 return offset;
567 }
568
569
570
571 static int
572 dissect_goose_BOOLEAN(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
573 offset = dissect_ber_boolean(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
574
575 return offset;
576 }
577
578
579 static const ber_sequence_t SEQUENCE_OF_Data_sequence_of[1] = {
580 { &hf_goose_allData_item , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_goose_Data },
581 };
582
583 static int
584 dissect_goose_SEQUENCE_OF_Data(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
585 offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset,
586 SEQUENCE_OF_Data_sequence_of, hf_index, ett_goose_SEQUENCE_OF_Data);
587
588 return offset;
589 }
590
591
592
593 static int
594 dissect_goose_BIT_STRING(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
595 offset = dissect_ber_bitstring(implicit_tag, actx, tree, tvb, offset,
596 NULL, 0, hf_index, -1,
597 NULL);
598
599 return offset;
600 }
601
602
603
604 static int
605 dissect_goose_FloatingPoint(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
606
607 int len = tvb_reported_length_remaining(tvb, offset);
608
609 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
610 NULL);
611
612 if ((len == FLOAT_ENC_LENGTH) && (tvb_get_uint8(tvb,0) == SINGLE_FLOAT_EXP_BITS) ){
613 /* IEEE 754 single precision floating point */
614 proto_item_set_hidden(actx->created_item);
615 proto_tree_add_item(tree, hf_goose_float_value, tvb, 1, (FLOAT_ENC_LENGTH-1), ENC_BIG_ENDIAN);
616 }
617
618
619 return offset;
620 }
621
622
623
624 static int
625 dissect_goose_REAL(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
626 offset = dissect_ber_real(implicit_tag, actx, tree, tvb, offset, hf_index,
627 NULL);
628
629 return offset;
630 }
631
632
633
634 static int
635 dissect_goose_OCTET_STRING(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
636 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
637 NULL);
638
639 return offset;
640 }
641
642
643
644 static int
645 dissect_goose_TimeOfDay(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
646 offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index,
647 NULL);
648
649 return offset;
650 }
651
652
653
654 static int
655 dissect_goose_OBJECT_IDENTIFIER(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
656 offset = dissect_ber_object_identifier(implicit_tag, actx, tree, tvb, offset, hf_index, NULL);
657
658 return offset;
659 }
660
661
662
663 static int
664 dissect_goose_MMSString(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
665 offset = dissect_ber_restricted_string(implicit_tag, BER_UNI_TAG_UTF8String,
666 actx, tree, tvb, offset, hf_index,
667 NULL);
668
669 return offset;
670 }
671
672
673 static const value_string goose_Data_vals[] = {
674 { 1, "array" },
675 { 2, "structure" },
676 { 3, "boolean" },
677 { 4, "bit-string" },
678 { 5, "integer" },
679 { 6, "unsigned" },
680 { 7, "floating-point" },
681 { 8, "real" },
682 { 9, "octet-string" },
683 { 10, "visible-string" },
684 { 12, "binary-time" },
685 { 13, "bcd" },
686 { 14, "booleanArray" },
687 { 15, "objId" },
688 { 16, "mMSString" },
689 { 17, "utc-time" },
690 { 0, NULL }
691 };
692
693 static const ber_choice_t Data_choice[] = {
694 { 1, &hf_goose_array , BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_SEQUENCE_OF_Data },
695 { 2, &hf_goose_structure , BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_SEQUENCE_OF_Data },
696 { 3, &hf_goose_boolean , BER_CLASS_CON, 3, BER_FLAGS_IMPLTAG, dissect_goose_BOOLEAN },
697 { 4, &hf_goose_bit_string , BER_CLASS_CON, 4, BER_FLAGS_IMPLTAG, dissect_goose_BIT_STRING },
698 { 5, &hf_goose_integer , BER_CLASS_CON, 5, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
699 { 6, &hf_goose_unsigned , BER_CLASS_CON, 6, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
700 { 7, &hf_goose_floating_point, BER_CLASS_CON, 7, BER_FLAGS_IMPLTAG, dissect_goose_FloatingPoint },
701 { 8, &hf_goose_real , BER_CLASS_CON, 8, BER_FLAGS_IMPLTAG, dissect_goose_REAL },
702 { 9, &hf_goose_octet_string , BER_CLASS_CON, 9, BER_FLAGS_IMPLTAG, dissect_goose_OCTET_STRING },
703 { 10, &hf_goose_visible_string, BER_CLASS_CON, 10, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
704 { 12, &hf_goose_binary_time , BER_CLASS_CON, 12, BER_FLAGS_IMPLTAG, dissect_goose_TimeOfDay },
705 { 13, &hf_goose_bcd , BER_CLASS_CON, 13, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
706 { 14, &hf_goose_booleanArray , BER_CLASS_CON, 14, BER_FLAGS_IMPLTAG, dissect_goose_BIT_STRING },
707 { 15, &hf_goose_objId , BER_CLASS_CON, 15, BER_FLAGS_IMPLTAG, dissect_goose_OBJECT_IDENTIFIER },
708 { 16, &hf_goose_mMSString , BER_CLASS_CON, 16, BER_FLAGS_IMPLTAG, dissect_goose_MMSString },
709 { 17, &hf_goose_utc_time , BER_CLASS_CON, 17, BER_FLAGS_IMPLTAG, dissect_goose_UtcTime },
710 { 0, NULL, 0, 0, 0, NULL }
711 };
712
713 static int
714 dissect_goose_Data(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
715 // Data -> Data/array -> Data
716 actx->pinfo->dissection_depth += 2;
717 increment_dissection_depth(actx->pinfo);
718 offset = dissect_ber_choice(actx, tree, tvb, offset,
719 Data_choice, hf_index, ett_goose_Data,
720 NULL);
721
722 actx->pinfo->dissection_depth -= 2;
723 decrement_dissection_depth(actx->pinfo);
724 return offset;
725 }
726
727
728 static const ber_sequence_t IECGoosePdu_sequence[] = {
729 { &hf_goose_gocbRef , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
730 { &hf_goose_timeAllowedtoLive, BER_CLASS_CON, 1, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
731 { &hf_goose_datSet , BER_CLASS_CON, 2, BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
732 { &hf_goose_goID , BER_CLASS_CON, 3, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_goose_VisibleString },
733 { &hf_goose_t , BER_CLASS_CON, 4, BER_FLAGS_IMPLTAG, dissect_goose_UtcTime },
734 { &hf_goose_stNum , BER_CLASS_CON, 5, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
735 { &hf_goose_sqNum , BER_CLASS_CON, 6, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
736 { &hf_goose_simulation , BER_CLASS_CON, 7, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_goose_T_simulation },
737 { &hf_goose_confRev , BER_CLASS_CON, 8, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
738 { &hf_goose_ndsCom , BER_CLASS_CON, 9, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_goose_BOOLEAN },
739 { &hf_goose_numDatSetEntries, BER_CLASS_CON, 10, BER_FLAGS_IMPLTAG, dissect_goose_INTEGER },
740 { &hf_goose_allData , BER_CLASS_CON, 11, BER_FLAGS_IMPLTAG, dissect_goose_SEQUENCE_OF_Data },
741 { NULL, 0, 0, 0, NULL }
742 };
743
744 static int
745 dissect_goose_IECGoosePdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
746 offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,
747 IECGoosePdu_sequence, hf_index, ett_goose_IECGoosePdu);
748
749 return offset;
750 }
751
752
753 static const ber_choice_t GOOSEpdu_choice[] = {
754 { 0, &hf_goose_gseMngtPdu , BER_CLASS_APP, 0, BER_FLAGS_IMPLTAG, dissect_goose_GSEMngtPdu },
755 { 1, &hf_goose_goosePdu , BER_CLASS_APP, 1, BER_FLAGS_IMPLTAG, dissect_goose_IECGoosePdu },
756 { 0, NULL, 0, 0, 0, NULL }
757 };
758
759 static int
760 dissect_goose_GOOSEpdu(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {
761 offset = dissect_ber_choice(actx, tree, tvb, offset,
762 GOOSEpdu_choice, hf_index, ett_goose_GOOSEpdu,
763 NULL);
764
765 return offset;
766 }
767
768
769 static dissector_handle_t goose_handle;
770
771
772 #define OSI_SPDU_TUNNELED 0xA0 /* Tunneled */
773 #define OSI_SPDU_GOOSE 0xA1 /* GOOSE */
774 #define OSI_SPDU_SV 0xA2 /* Sample Value */
775 #define OSI_SPDU_MNGT 0xA3 /* Management */
776
777 static const value_string ositp_spdu_id[] = {
778 { OSI_SPDU_TUNNELED, "Tunneled" },
779 { OSI_SPDU_GOOSE, "GOOSE" },
780 { OSI_SPDU_SV, "Sample value" },
781 { OSI_SPDU_MNGT, "Management" },
782 { 0, NULL }
783 };
784
785 #define OSI_PDU_GOOSE 0x81
786 #define OSI_PDU_SV 0x82
787 #define OSI_PDU_TUNNELED 0x83
788 #define OSI_PDU_MNGT 0x84
789
790 static const value_string ositp_pdu_id[] = {
791 { OSI_PDU_GOOSE, "GOOSE" },
792 { OSI_PDU_SV, "SV" },
793 { OSI_PDU_TUNNELED, "Tunnel" },
794 { OSI_PDU_MNGT, "MNGT" },
795 { 0, NULL }
796 };
797
798 #define APDU_HEADER_SIZE 6
799
800 /*
801 * Dissect GOOSE PDUs inside a PPDU.
802 */
803 static int
804 dissect_goose(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree,
805 void* data _U_)
806 {
807 uint32_t offset = 0;
808 uint32_t old_offset;
809 uint32_t length;
810 uint32_t reserve1_val;
811 proto_item *item = NULL;
812 proto_item *tree_item = NULL;
813 proto_tree *tree = NULL;
814 goose_chk_data_t *data_chk = NULL;
815 asn1_ctx_t asn1_ctx;
816 asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);
817
818 static int * const reserve1_flags[] = {
819 &hf_goose_reserve1_s_bit,
820 NULL
821 };
822
823 asn1_ctx.private_data = wmem_alloc(pinfo->pool, GOOSE_CHK_DATA_LEN);
824 data_chk = (goose_chk_data_t *)asn1_ctx.private_data;
825
826 col_set_str(pinfo->cinfo, COL_PROTOCOL, GOOSE_PNAME);
827 col_clear(pinfo->cinfo, COL_INFO);
828
829 tree_item = proto_tree_add_item(parent_tree, proto_goose, tvb, 0, -1, ENC_NA);
830 tree = proto_item_add_subtree(tree_item, ett_goose);
831 add_ber_encoded_label(tvb, pinfo, parent_tree);
832
833
834 /* APPID */
835 proto_tree_add_item(tree, hf_goose_appid, tvb, offset, 2, ENC_BIG_ENDIAN);
836
837 /* Length */
838 item = proto_tree_add_item_ret_uint(tree, hf_goose_length, tvb, offset + 2, 2,
839 ENC_BIG_ENDIAN, &length);
840 if (length < 8) {
841 expert_add_info(pinfo, item, &ei_goose_bogus_length);
842 }
843 set_actual_length(tvb, length);
844 proto_item_set_len(tree_item, length);
845
846 /* Reserved 1 */
847 reserve1_val = tvb_get_uint16(tvb, offset + 4, ENC_BIG_ENDIAN);
848 proto_tree_add_bitmask_value(tree, tvb, offset + 4, hf_goose_reserve1, ett_reserve1,
849 reserve1_flags, reserve1_val);
850
851 /* Store the header sim value for later expert info checks */
852 if(data_chk){
853 if(reserve1_val & F_RESERVE1_S_BIT){
854 data_chk->s_bit = true;
855 }else{
856 data_chk->s_bit = false;
857 }
858 }
859
860
861 /* Reserved 2 */
862 proto_tree_add_item(tree, hf_goose_reserve2, tvb, offset + 6, 2,
863 ENC_BIG_ENDIAN);
864
865 offset = 8;
866 while (offset < length){
867 old_offset = offset;
868 offset = dissect_goose_GOOSEpdu(false, tvb, offset, &asn1_ctx , tree, -1);
869 if (offset == old_offset) {
870 proto_tree_add_expert(tree, pinfo, &ei_goose_zero_pdu, tvb, offset, -1);
871 break;
872 }
873 }
874
875 return tvb_captured_length(tvb);
876 }
877
878 /*
879 * Dissect RGOOSE PDUs inside ISO 8602/X.234 CLTP ConnecteionLess
880 * Transport Protocol.
881 */
882 static int
883 dissect_rgoose(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree,
884 void* data _U_)
885 {
886 unsigned offset = 0, old_offset = 0;
887 uint32_t init_v_length, payload_tag, padding_length, length;
888 uint32_t payload_length, apdu_offset = 0, apdu_length, apdu_simulation;
889 proto_item *item = NULL;
890 proto_tree *tree = NULL, *r_goose_tree = NULL, *sess_user_info_tree = NULL;
891 goose_chk_data_t *data_chk = NULL;
892 asn1_ctx_t asn1_ctx;
893 asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);
894
895 asn1_ctx.private_data = wmem_alloc(pinfo->pool, GOOSE_CHK_DATA_LEN);
896 data_chk = (goose_chk_data_t *)asn1_ctx.private_data;
897
898 col_set_str(pinfo->cinfo, COL_PROTOCOL, R_GOOSE_PNAME);
899 col_clear(pinfo->cinfo, COL_INFO);
900
901 item = proto_tree_add_item(parent_tree, proto_r_goose, tvb, 0, -1, ENC_NA);
902 r_goose_tree = proto_item_add_subtree(item, ett_r_goose);
903
904 /* Session header subtree */
905 item = proto_tree_add_item(r_goose_tree, hf_goose_session_header, tvb, 0,
906 -1, ENC_NA);
907 tree = proto_item_add_subtree(item, ett_session_header);
908
909 /* SPDU ID */
910 proto_tree_add_item(tree, hf_goose_spdu_id, tvb, offset++, 1,
911 ENC_BIG_ENDIAN);
912 /* Session header length */
913 proto_tree_add_item_ret_uint(tree, hf_goose_session_hdr_length, tvb, offset++, 1,
914 ENC_BIG_ENDIAN, &length);
915 proto_item_set_len(item, length + 2);
916
917 /* Header content indicator */
918 proto_tree_add_item(tree, hf_goose_content_id, tvb, offset++, 1,
919 ENC_BIG_ENDIAN);
920 /* Length */
921 proto_tree_add_item(tree, hf_goose_hdr_length, tvb, offset++, 1,
922 ENC_BIG_ENDIAN);
923 /* SPDU length */
924 proto_tree_add_item(tree, hf_goose_spdu_lenth, tvb, offset, 4,
925 ENC_BIG_ENDIAN);
926 offset += 4;
927 /* SPDU number */
928 proto_tree_add_item(tree, hf_goose_spdu_num, tvb, offset, 4,
929 ENC_BIG_ENDIAN);
930 offset += 4;
931 /* Version */
932 proto_tree_add_item(tree, hf_goose_version, tvb, offset, 2, ENC_BIG_ENDIAN);
933 offset += 2;
934
935 /* Security information subtree */
936 item = proto_tree_add_item(tree, hf_goose_security_info, tvb, offset, -1,
937 ENC_NA);
938 tree = proto_item_add_subtree(item, ett_security_info);
939 /* Time of current key */
940 proto_tree_add_item(tree, hf_goose_current_key_t, tvb, offset, 4,
941 ENC_BIG_ENDIAN);
942 offset += 4;
943 /* Time of next key */
944 proto_tree_add_item(tree, hf_goose_next_key_t, tvb, offset, 2,
945 ENC_BIG_ENDIAN);
946 offset += 2;
947 /* Key ID */
948 proto_tree_add_item(tree, hf_goose_key_id, tvb, offset, 4, ENC_BIG_ENDIAN);
949 offset += 4;
950 /* Initialization vector length */
951 proto_tree_add_item_ret_uint(tree, hf_goose_init_vec_length, tvb, offset++, 1,
952 ENC_BIG_ENDIAN, &init_v_length);
953 proto_item_set_len(item, init_v_length + 11);
954
955 if (init_v_length > 0) {
956 /* Initialization vector bytes */
957 proto_tree_add_item(tree, hf_goose_init_vec, tvb, offset, init_v_length,
958 ENC_NA);
959 }
960 offset += init_v_length;
961
962 /* Session user information subtree */
963 item = proto_tree_add_item(r_goose_tree, hf_goose_session_user_info, tvb,
964 offset, -1, ENC_NA);
965 sess_user_info_tree = proto_item_add_subtree(item, ett_payload);
966
967 /* Payload subtree */
968 item = proto_tree_add_item(sess_user_info_tree, hf_goose_payload, tvb,
969 offset, -1, ENC_NA);
970 tree = proto_item_add_subtree(item, ett_payload);
971 /* Payload length */
972 proto_tree_add_item_ret_uint(tree, hf_goose_payload_length, tvb, offset, 4,
973 ENC_BIG_ENDIAN, &payload_length);
974 offset += 4;
975
976 while (apdu_offset < payload_length){
977 /* APDU tag */
978 proto_tree_add_item_ret_uint(tree, hf_goose_apdu_tag, tvb, offset++, 1,
979 ENC_BIG_ENDIAN, &payload_tag);
980 /* Simulation flag */
981 proto_tree_add_item_ret_uint(tree, hf_goose_apdu_simulation, tvb, offset++,
982 1, ENC_BIG_ENDIAN, &apdu_simulation);
983 /* APPID */
984 proto_tree_add_item(tree, hf_goose_apdu_appid, tvb, offset, 2,
985 ENC_BIG_ENDIAN);
986 offset += 2;
987
988 if (payload_tag != OSI_PDU_GOOSE) {
989 return tvb_captured_length(tvb);
990 }
991
992 /* Store the header sim value for later expert info checks */
993 if(data_chk){
994 if(apdu_simulation){
995 data_chk->s_bit = true;
996 }else{
997 data_chk->s_bit = false;
998 }
999 }
1000
1001 /* APDU length */
1002 proto_tree_add_item_ret_uint(tree, hf_goose_apdu_length, tvb, offset, 2,
1003 ENC_BIG_ENDIAN, &apdu_length);
1004
1005 apdu_offset += (APDU_HEADER_SIZE + apdu_length);
1006 offset += 2;
1007
1008 old_offset = offset;
1009 offset = dissect_goose_GOOSEpdu(false, tvb, offset, &asn1_ctx , tree, -1);
1010 if (offset == old_offset) {
1011 proto_tree_add_expert(tree, pinfo, &ei_goose_zero_pdu, tvb, offset, -1);
1012 break;
1013 }
1014 }
1015
1016 /* Check do we have padding bytes */
1017 if ((tvb_captured_length(tvb) > offset) &&
1018 (tvb_get_uint8(tvb, offset) == 0xAF)) {
1019 /* Padding subtree */
1020 item = proto_tree_add_item(sess_user_info_tree, hf_goose_padding, tvb,
1021 offset, -1, ENC_NA);
1022 tree = proto_item_add_subtree(item, ett_padding);
1023
1024 /* Padding tag */
1025 proto_tree_add_item(tree, hf_goose_padding_tag, tvb, offset++, 1,
1026 ENC_NA);
1027 /* Padding length */
1028 proto_tree_add_item_ret_uint(tree, hf_goose_padding_length, tvb, offset++, 1,
1029 ENC_BIG_ENDIAN, &padding_length);
1030 proto_item_set_len(item, padding_length + 1);
1031
1032 /* Padding bytes */
1033 proto_tree_add_item(tree, hf_goose_padding, tvb, offset, padding_length,
1034 ENC_NA);
1035 offset += padding_length;
1036 }
1037
1038 /* Check do we have HMAC bytes */
1039 if (tvb_captured_length(tvb) > offset) {
1040 /* HMAC bytes */
1041 proto_tree_add_item(sess_user_info_tree, hf_goose_hmac, tvb, offset,
1042 tvb_captured_length(tvb) - offset, ENC_NA);
1043 }
1044
1045 return tvb_captured_length(tvb);
1046 }
1047
1048 static bool
1049 dissect_rgoose_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree,
1050 void *data)
1051 {
1052 uint8_t spdu;
1053
1054 /* Check do we have at least min size of Session header bytes */
1055 if (tvb_captured_length(tvb) < 27) {
1056 return false;
1057 }
1058
1059 /* Is it R-GOOSE? */
1060 spdu = tvb_get_uint8(tvb, 0);
1061 if (spdu != OSI_SPDU_GOOSE) {
1062 return false;
1063 }
1064
1065 dissect_rgoose(tvb, pinfo, parent_tree, data);
1066 return true;
1067 }
1068
1069 /*--- proto_register_goose -------------------------------------------*/
1070 void proto_register_goose(void) {
1071
1072 /* List of fields */
1073 static hf_register_info hf[] =
1074 {
1075 { &hf_goose_session_header,
1076 { "Session header", "rgoose.session_hdr",
1077 FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
1078
1079 { &hf_goose_spdu_id,
1080 { "Session identifier", "rgoose.spdu_id",
1081 FT_UINT8, BASE_HEX_DEC, VALS(ositp_spdu_id), 0x0, NULL, HFILL }},
1082
1083 { &hf_goose_session_hdr_length,
1084 { "Session header length", "rgoose.session_hdr_len",
1085 FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
1086
1087 { &hf_goose_content_id,
1088 { "Common session header identifier", "rgoose.common_session_id",
1089 FT_UINT8, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1090
1091 { &hf_goose_hdr_length,
1092 { "Header length", "rgoose.hdr_len",
1093 FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
1094
1095 { &hf_goose_spdu_lenth,
1096 { "SPDU length", "rgoose.spdu_len",
1097 FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
1098
1099 { &hf_goose_spdu_num,
1100 { "SPDU number", "rgoose.spdu_num",
1101 FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
1102
1103 { &hf_goose_version,
1104 { "Version", "rgoose.version",
1105 FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1106
1107 { &hf_goose_security_info,
1108 { "Security information", "rgoose.sec_info",
1109 FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
1110
1111 { &hf_goose_current_key_t,
1112 { "Time of current key", "rgoose.curr_key_t",
1113 FT_UINT32, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1114
1115 { &hf_goose_next_key_t,
1116 { "Time of next key", "rgoose.next_key_t",
1117 FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1118
1119 { &hf_goose_key_id,
1120 { "Key ID", "rgoose.key_id",
1121 FT_UINT32, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1122
1123 { &hf_goose_init_vec_length,
1124 { "Initialization vector length", "rgoose.init_v_len",
1125 FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
1126
1127 { &hf_goose_init_vec,
1128 { "Initialization vector", "rgoose.init_v",
1129 FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
1130
1131 { &hf_goose_session_user_info,
1132 { "Session user information", "rgoose.session_user_info",
1133 FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
1134
1135 { &hf_goose_payload,
1136 { "Payload", "rgoose.payload",
1137 FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
1138
1139 { &hf_goose_payload_length,
1140 { "Payload length", "rgoose.payload_len",
1141 FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
1142
1143 { &hf_goose_apdu_tag,
1144 { "Payload type tag", "rgoose.pdu_tag",
1145 FT_UINT8, BASE_HEX_DEC, VALS(ositp_pdu_id), 0x0, NULL, HFILL }},
1146
1147 { &hf_goose_apdu_simulation,
1148 { "Simulation flag", "rgoose.simulation",
1149 FT_UINT8, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1150
1151 { &hf_goose_apdu_appid,
1152 { "APPID", "rgoose.appid",
1153 FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1154
1155 { &hf_goose_apdu_length,
1156 { "APDU length", "rgoose.apdu_len",
1157 FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1158
1159 { &hf_goose_padding_tag,
1160 { "Padding", "rgoose.padding_tag",
1161 FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
1162
1163 { &hf_goose_padding_length,
1164 { "Padding length", "rgoose.padding_len",
1165 FT_UINT8, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1166
1167 { &hf_goose_padding,
1168 { "Padding", "rgoose.padding",
1169 FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
1170
1171 { &hf_goose_hmac,
1172 { "HMAC", "rgoose.hmac",
1173 FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
1174
1175 { &hf_goose_appid,
1176 { "APPID", "goose.appid",
1177 FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1178
1179 { &hf_goose_length,
1180 { "Length", "goose.length",
1181 FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
1182
1183 { &hf_goose_reserve1,
1184 { "Reserved 1", "goose.reserve1",
1185 FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1186
1187 { &hf_goose_reserve1_s_bit,
1188 { "Simulated", "goose.reserve1.s_bit",
1189 FT_BOOLEAN, 16, NULL, F_RESERVE1_S_BIT, NULL, HFILL } },
1190
1191 { &hf_goose_reserve2,
1192 { "Reserved 2", "goose.reserve2",
1193 FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
1194
1195 { &hf_goose_float_value,
1196 { "float value", "goose.float_value",
1197 FT_FLOAT, BASE_NONE, NULL, 0x0, NULL, HFILL }},
1198
1199 { &hf_goose_gseMngtPdu,
1200 { "gseMngtPdu", "goose.gseMngtPdu_element",
1201 FT_NONE, BASE_NONE, NULL, 0,
1202 NULL, HFILL }},
1203 { &hf_goose_goosePdu,
1204 { "goosePdu", "goose.goosePdu_element",
1205 FT_NONE, BASE_NONE, NULL, 0,
1206 "IECGoosePdu", HFILL }},
1207 { &hf_goose_stateID,
1208 { "stateID", "goose.stateID",
1209 FT_INT32, BASE_DEC, NULL, 0,
1210 "INTEGER", HFILL }},
1211 { &hf_goose_requestResp,
1212 { "requestResp", "goose.requestResp",
1213 FT_UINT32, BASE_DEC, VALS(goose_RequestResponse_vals), 0,
1214 "RequestResponse", HFILL }},
1215 { &hf_goose_requests,
1216 { "requests", "goose.requests",
1217 FT_UINT32, BASE_DEC, VALS(goose_GSEMngtRequests_vals), 0,
1218 "GSEMngtRequests", HFILL }},
1219 { &hf_goose_responses,
1220 { "responses", "goose.responses",
1221 FT_UINT32, BASE_DEC, VALS(goose_GSEMngtResponses_vals), 0,
1222 "GSEMngtResponses", HFILL }},
1223 { &hf_goose_getGoReference,
1224 { "getGoReference", "goose.getGoReference_element",
1225 FT_NONE, BASE_NONE, NULL, 0,
1226 "GetReferenceRequestPdu", HFILL }},
1227 { &hf_goose_getGOOSEElementNumber,
1228 { "getGOOSEElementNumber", "goose.getGOOSEElementNumber_element",
1229 FT_NONE, BASE_NONE, NULL, 0,
1230 "GetElementRequestPdu", HFILL }},
1231 { &hf_goose_getGsReference,
1232 { "getGsReference", "goose.getGsReference_element",
1233 FT_NONE, BASE_NONE, NULL, 0,
1234 "GetReferenceRequestPdu", HFILL }},
1235 { &hf_goose_getGSSEDataOffset,
1236 { "getGSSEDataOffset", "goose.getGSSEDataOffset_element",
1237 FT_NONE, BASE_NONE, NULL, 0,
1238 "GetElementRequestPdu", HFILL }},
1239 { &hf_goose_gseMngtNotSupported,
1240 { "gseMngtNotSupported", "goose.gseMngtNotSupported_element",
1241 FT_NONE, BASE_NONE, NULL, 0,
1242 NULL, HFILL }},
1243 { &hf_goose_gseMngtResponses_GetGOReference,
1244 { "getGoReference", "goose.gseMngtResponses_GetGOReference_element",
1245 FT_NONE, BASE_NONE, NULL, 0,
1246 "GSEMngtResponsePdu", HFILL }},
1247 { &hf_goose_gseMngtResponses_GetGOOSEElementNumber,
1248 { "getGOOSEElementNumber", "goose.gseMngtResponses_GetGOOSEElementNumber_element",
1249 FT_NONE, BASE_NONE, NULL, 0,
1250 "GSEMngtResponsePdu", HFILL }},
1251 { &hf_goose_gseMngtResponses_GetGSReference,
1252 { "getGsReference", "goose.gseMngtResponses_GetGSReference_element",
1253 FT_NONE, BASE_NONE, NULL, 0,
1254 "GSEMngtResponsePdu", HFILL }},
1255 { &hf_goose_gseMngtResponses_GetGSSEDataOffset,
1256 { "getGSSEDataOffset", "goose.gseMngtResponses_GetGSSEDataOffset_element",
1257 FT_NONE, BASE_NONE, NULL, 0,
1258 "GSEMngtResponsePdu", HFILL }},
1259 { &hf_goose_ident,
1260 { "ident", "goose.ident",
1261 FT_STRING, BASE_NONE, NULL, 0,
1262 "VisibleString", HFILL }},
1263 { &hf_goose_getReferenceRequest_offset,
1264 { "offset", "goose.getReferenceRequest.offset",
1265 FT_UINT32, BASE_DEC, NULL, 0,
1266 "T_getReferenceRequest_offset", HFILL }},
1267 { &hf_goose_getReferenceRequest_offset_item,
1268 { "offset item", "goose.getReferenceRequest_offset_item",
1269 FT_INT32, BASE_DEC, NULL, 0,
1270 "INTEGER", HFILL }},
1271 { &hf_goose_references,
1272 { "references", "goose.references",
1273 FT_UINT32, BASE_DEC, NULL, 0,
1274 NULL, HFILL }},
1275 { &hf_goose_references_item,
1276 { "references item", "goose.references_item",
1277 FT_STRING, BASE_NONE, NULL, 0,
1278 "VisibleString", HFILL }},
1279 { &hf_goose_confRev,
1280 { "confRev", "goose.confRev",
1281 FT_INT32, BASE_DEC, NULL, 0,
1282 "INTEGER", HFILL }},
1283 { &hf_goose_posNeg,
1284 { "posNeg", "goose.posNeg",
1285 FT_UINT32, BASE_DEC, VALS(goose_PositiveNegative_vals), 0,
1286 "PositiveNegative", HFILL }},
1287 { &hf_goose_responsePositive,
1288 { "responsePositive", "goose.responsePositive_element",
1289 FT_NONE, BASE_NONE, NULL, 0,
1290 NULL, HFILL }},
1291 { &hf_goose_datSet,
1292 { "datSet", "goose.datSet",
1293 FT_STRING, BASE_NONE, NULL, 0,
1294 "VisibleString", HFILL }},
1295 { &hf_goose_result,
1296 { "result", "goose.result",
1297 FT_UINT32, BASE_DEC, NULL, 0,
1298 "SEQUENCE_OF_RequestResults", HFILL }},
1299 { &hf_goose_result_item,
1300 { "RequestResults", "goose.RequestResults",
1301 FT_UINT32, BASE_DEC, VALS(goose_RequestResults_vals), 0,
1302 NULL, HFILL }},
1303 { &hf_goose_responseNegative,
1304 { "responseNegative", "goose.responseNegative",
1305 FT_INT32, BASE_DEC, VALS(goose_GlbErrors_vals), 0,
1306 "GlbErrors", HFILL }},
1307 { &hf_goose_offset,
1308 { "offset", "goose.offset",
1309 FT_INT32, BASE_DEC, NULL, 0,
1310 "INTEGER", HFILL }},
1311 { &hf_goose_reference,
1312 { "reference", "goose.reference",
1313 FT_STRING, BASE_NONE, NULL, 0,
1314 "IA5String", HFILL }},
1315 { &hf_goose_error,
1316 { "error", "goose.error",
1317 FT_INT32, BASE_DEC, VALS(goose_ErrorReason_vals), 0,
1318 "ErrorReason", HFILL }},
1319 { &hf_goose_gocbRef,
1320 { "gocbRef", "goose.gocbRef",
1321 FT_STRING, BASE_NONE, NULL, 0,
1322 "VisibleString", HFILL }},
1323 { &hf_goose_timeAllowedtoLive,
1324 { "timeAllowedtoLive", "goose.timeAllowedtoLive",
1325 FT_INT32, BASE_DEC, NULL, 0,
1326 "INTEGER", HFILL }},
1327 { &hf_goose_goID,
1328 { "goID", "goose.goID",
1329 FT_STRING, BASE_NONE, NULL, 0,
1330 "VisibleString", HFILL }},
1331 { &hf_goose_t,
1332 { "t", "goose.t",
1333 FT_STRING, BASE_NONE, NULL, 0,
1334 "UtcTime", HFILL }},
1335 { &hf_goose_stNum,
1336 { "stNum", "goose.stNum",
1337 FT_UINT32, BASE_DEC, NULL, 0,
1338 "INTEGER", HFILL }},
1339 { &hf_goose_sqNum,
1340 { "sqNum", "goose.sqNum",
1341 FT_UINT32, BASE_DEC, NULL, 0,
1342 "INTEGER", HFILL }},
1343 { &hf_goose_simulation,
1344 { "simulation", "goose.simulation",
1345 FT_BOOLEAN, BASE_NONE, NULL, 0,
1346 "BOOLEAN", HFILL }},
1347 { &hf_goose_ndsCom,
1348 { "ndsCom", "goose.ndsCom",
1349 FT_BOOLEAN, BASE_NONE, NULL, 0,
1350 "BOOLEAN", HFILL }},
1351 { &hf_goose_numDatSetEntries,
1352 { "numDatSetEntries", "goose.numDatSetEntries",
1353 FT_INT32, BASE_DEC, NULL, 0,
1354 "INTEGER", HFILL }},
1355 { &hf_goose_allData,
1356 { "allData", "goose.allData",
1357 FT_UINT32, BASE_DEC, NULL, 0,
1358 "SEQUENCE_OF_Data", HFILL }},
1359 { &hf_goose_allData_item,
1360 { "Data", "goose.Data",
1361 FT_UINT32, BASE_DEC, VALS(goose_Data_vals), 0,
1362 NULL, HFILL }},
1363 { &hf_goose_array,
1364 { "array", "goose.array",
1365 FT_UINT32, BASE_DEC, NULL, 0,
1366 "SEQUENCE_OF_Data", HFILL }},
1367 { &hf_goose_array_item,
1368 { "Data", "goose.Data",
1369 FT_UINT32, BASE_DEC, VALS(goose_Data_vals), 0,
1370 NULL, HFILL }},
1371 { &hf_goose_structure,
1372 { "structure", "goose.structure",
1373 FT_UINT32, BASE_DEC, NULL, 0,
1374 "SEQUENCE_OF_Data", HFILL }},
1375 { &hf_goose_structure_item,
1376 { "Data", "goose.Data",
1377 FT_UINT32, BASE_DEC, VALS(goose_Data_vals), 0,
1378 NULL, HFILL }},
1379 { &hf_goose_boolean,
1380 { "boolean", "goose.boolean",
1381 FT_BOOLEAN, BASE_NONE, NULL, 0,
1382 NULL, HFILL }},
1383 { &hf_goose_bit_string,
1384 { "bit-string", "goose.bit_string",
1385 FT_BYTES, BASE_NONE, NULL, 0,
1386 NULL, HFILL }},
1387 { &hf_goose_integer,
1388 { "integer", "goose.integer",
1389 FT_INT32, BASE_DEC, NULL, 0,
1390 NULL, HFILL }},
1391 { &hf_goose_unsigned,
1392 { "unsigned", "goose.unsigned",
1393 FT_INT32, BASE_DEC, NULL, 0,
1394 "INTEGER", HFILL }},
1395 { &hf_goose_floating_point,
1396 { "floating-point", "goose.floating_point",
1397 FT_BYTES, BASE_NONE, NULL, 0,
1398 "FloatingPoint", HFILL }},
1399 { &hf_goose_real,
1400 { "real", "goose.real",
1401 FT_DOUBLE, BASE_NONE, NULL, 0,
1402 NULL, HFILL }},
1403 { &hf_goose_octet_string,
1404 { "octet-string", "goose.octet_string",
1405 FT_BYTES, BASE_NONE, NULL, 0,
1406 NULL, HFILL }},
1407 { &hf_goose_visible_string,
1408 { "visible-string", "goose.visible_string",
1409 FT_STRING, BASE_NONE, NULL, 0,
1410 "VisibleString", HFILL }},
1411 { &hf_goose_binary_time,
1412 { "binary-time", "goose.binary_time",
1413 FT_BYTES, BASE_NONE, NULL, 0,
1414 "TimeOfDay", HFILL }},
1415 { &hf_goose_bcd,
1416 { "bcd", "goose.bcd",
1417 FT_INT32, BASE_DEC, NULL, 0,
1418 "INTEGER", HFILL }},
1419 { &hf_goose_booleanArray,
1420 { "booleanArray", "goose.booleanArray",
1421 FT_BYTES, BASE_NONE, NULL, 0,
1422 "BIT_STRING", HFILL }},
1423 { &hf_goose_objId,
1424 { "objId", "goose.objId",
1425 FT_OID, BASE_NONE, NULL, 0,
1426 "OBJECT_IDENTIFIER", HFILL }},
1427 { &hf_goose_mMSString,
1428 { "mMSString", "goose.mMSString",
1429 FT_STRING, BASE_NONE, NULL, 0,
1430 NULL, HFILL }},
1431 { &hf_goose_utc_time,
1432 { "utc-time", "goose.utc_time",
1433 FT_STRING, BASE_NONE, NULL, 0,
1434 "UtcTime", HFILL }},
1435 };
1436
1437 /* List of subtrees */
1438 static int *ett[] = {
1439 &ett_r_goose,
1440 &ett_session_header,
1441 &ett_security_info,
1442 &ett_session_user_info,
1443 &ett_payload,
1444 &ett_padding,
1445 &ett_goose,
1446 &ett_reserve1,
1447 &ett_expert_inf_sim,
1448 &ett_goose_GOOSEpdu,
1449 &ett_goose_GSEMngtPdu,
1450 &ett_goose_RequestResponse,
1451 &ett_goose_GSEMngtRequests,
1452 &ett_goose_GSEMngtResponses,
1453 &ett_goose_GetReferenceRequestPdu,
1454 &ett_goose_T_getReferenceRequest_offset,
1455 &ett_goose_GetElementRequestPdu,
1456 &ett_goose_T_references,
1457 &ett_goose_GSEMngtResponsePdu,
1458 &ett_goose_PositiveNegative,
1459 &ett_goose_T_responsePositive,
1460 &ett_goose_SEQUENCE_OF_RequestResults,
1461 &ett_goose_RequestResults,
1462 &ett_goose_IECGoosePdu,
1463 &ett_goose_SEQUENCE_OF_Data,
1464 &ett_goose_Data,
1465 };
1466
1467 static ei_register_info ei[] = {
1468 { &ei_goose_mal_utctime,
1469 { "goose.malformed.utctime", PI_MALFORMED, PI_WARN,
1470 "BER Error: malformed UTCTime encoding", EXPFILL }},
1471 { &ei_goose_zero_pdu,
1472 { "goose.zero_pdu", PI_PROTOCOL, PI_ERROR,
1473 "Internal error, zero-byte GOOSE PDU", EXPFILL }},
1474 { &ei_goose_invalid_sim,
1475 { "goose.invalid_sim", PI_PROTOCOL, PI_WARN,
1476 "Invalid GOOSE: S bit set and Simulation attribute clear", EXPFILL }},
1477 { &ei_goose_bogus_length,
1478 { "goose.bogus_length", PI_PROTOCOL, PI_ERROR,
1479 "GOOSE length must be at least 8 (includes header)", EXPFILL }},
1480 };
1481
1482 expert_module_t* expert_goose;
1483
1484 /* Register protocol */
1485 proto_goose = proto_register_protocol(GOOSE_PNAME, GOOSE_PSNAME, GOOSE_PFNAME);
1486 proto_r_goose = proto_register_protocol(R_GOOSE_PNAME, R_GOOSE_PSNAME, R_GOOSE_PFNAME);
1487
1488 goose_handle = register_dissector("goose", dissect_goose, proto_goose);
1489
1490 /* Register fields and subtrees */
1491 proto_register_field_array(proto_goose, hf, array_length(hf));
1492 proto_register_subtree_array(ett, array_length(ett));
1493 expert_goose = expert_register_protocol(proto_goose);
1494 expert_register_field_array(expert_goose, ei, array_length(ei));
1495
1496 }
1497
1498 /*--- proto_reg_handoff_goose --- */
1499 void proto_reg_handoff_goose(void) {
1500
1501 dissector_add_uint("ethertype", ETHERTYPE_IEC61850_GOOSE, goose_handle);
1502
1503 heur_dissector_add("cltp", dissect_rgoose_heur,
1504 "R-GOOSE (GOOSE over CLTP)", "rgoose_cltp", proto_goose, HEURISTIC_ENABLE);
1505 }
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