1 /* packet-v5ua.c
2 *
3 * Extension of all V5.2-User Adaptation Layer dissection elements
4 * References:
5 * RFC 3807
6 * RFC 4233
7 * RFC 5133
8 *
9 * Copyright 2009
10 *
11 * ISKRATEL d.o.o. | 4S d.o.o.
12 * http://www.iskratel.si/ | http://www.4es.si/
13 * <info@iskratel.si> | <projects@4es.si>
14 * Vladimir Smrekar <vladimir.smrekar@gmail.com>
15 *
16 * Routines for V5.2-User Adaptation Layer dissection
17 *
18 * Extension of ISDN Q.921-User Adaptation Layer dissection
19 * Copyright 2002, Michael Tuexen <Michael.Tuexen[AT]siemens.com>
20 *
21 * Christoph Neusch <christoph.neusch@nortelnetworks.com>
22 *
23 * Wireshark - Network traffic analyzer
24 * By Gerald Combs <gerald@wireshark.org>
25 * Copyright 1998 Gerald Combs
26 *
27 * SPDX-License-Identifier: GPL-2.0-or-later
28 */
29
30 #include "config.h"
31
32 #include <epan/packet.h>
33 #include <epan/sctpppids.h> /* include V5UA payload protocol ID */
34
35 #include <wsutil/str_util.h>
36
37 void proto_register_v5ua(void);
38 void proto_reg_handoff_v5ua(void);
39
40 static int paddingl = 0;
41 static int dlci_efa = -1;
42
43 /* Initialize the protocol and registered fields */
44 static int proto_v5ua = -1;
45
46 static dissector_handle_t q931_handle;
47 static dissector_handle_t v52_handle;
48
49 /* round up parameter length to multiple of four */
50 #define ADD_PADDING(x) ((((x) + 3) >> 2) << 2)
51
52 /* common msg-header */
53 static int hf_version = -1;
54 static int hf_reserved = -1;
55 static int hf_msg_class = -1;
56 static int hf_msg_type = -1;
57 /* static int hf_msg_type_id = -1; */
58 static int hf_msg_length = -1;
59 /* V5UA message header */
60 static int hf_link_id = -1;
61 static int hf_chnl_id = -1;
62 static int hf_adaptation_layer_id = -1;
63 static int hf_text_if_id = -1;
64 static int hf_scn_protocol_id = -1;
65 static int hf_info_string = -1;
66 static int hf_asp_identifier = -1;
67 static int hf_dlci_zero_bit = -1;
68 static int hf_dlci_spare_bit = -1;
69 static int hf_dlci_sapi = -1;
70 static int hf_dlci_one_bit = -1;
71 static int hf_dlci_tei = -1;
72 static int hf_efa = -1;
73 /* static int hf_spare_efa = -1; */
74 /* variable length parameter (msg) */
75 static int hf_parameter_tag = -1;
76 static int hf_parameter_tag_draft = -1;
77 static int hf_parameter_length = -1;
78 static int hf_parameter_value = -1;
79 static int hf_parameter_padding = -1;
80
81 /* parameter fields */
82 static int hf_link_status = -1;
83 static int hf_sa_bit_id = -1;
84 static int hf_sa_bit_value = -1;
85 static int hf_diagnostic_info = -1;
86 static int hf_if_range_start = -1;
87 static int hf_if_range_end = -1;
88 static int hf_heartbeat_data = -1;
89 static int hf_traffic_mode_type = -1;
90 static int hf_error_code = -1;
91 static int hf_draft_error_code = -1;
92 static int hf_status_type = -1;
93 static int hf_status_id = -1;
94 static int hf_error_reason = -1;
95 static int hf_asp_reason = -1;
96 static int hf_tei_status = -1;
97 static int hf_tei_draft_status = -1;
98 static int hf_release_reason = -1;
99
100 /* Initialize the subtree pointers */
101 static gint ett_v5ua = -1;
102 static gint ett_v5ua_common_header= -1;
103 static gint ett_v5ua_parameter = -1;
104 static gint ett_v5ua_layer3 = -1;
105
106 #define RFC 0x1
107 #define DRAFT 0x2
108 /* Version of IUA */
109 static int iua_version = RFC;
110 /* Variables necessary for dissection of draft messages */
111 static int msg_class = -1;
112 static int msg_type = -1;
113 static int msg_length = -1;
114 static int messageclassCopy = -1;
115 static int sa_bit_id = -1;
116 static int link_status_operational = -1;
117
118 /* Code to actually dissect the packets */
119
120 /* define the parameters for the Tags: Tag-Type,Tag-Length,Tag-Value (Payload) */
121 #define PARAMETER_TAG_OFFSET 0
122 #define PARAMETER_TAG_LENGTH 2
123 #define PARAMETER_LENGTH_OFFSET (PARAMETER_TAG_OFFSET + PARAMETER_TAG_LENGTH)
124 #define PARAMETER_LENGTH_LENGTH 2
125 #define PARAMETER_VALUE_OFFSET (PARAMETER_LENGTH_OFFSET + PARAMETER_LENGTH_LENGTH)
126 #define PARAMETER_HEADER_OFFSET PARAMETER_TAG_OFFSET
127 #define PARAMETER_HEADER_LENGTH (PARAMETER_TAG_LENGTH + PARAMETER_LENGTH_LENGTH)
128
129
130 /*----------------------V5UA Interface Identifier (int) (Draft,RFC)------------*/
131
132 /* define parameter for the format of the integer formatted Interface Identifier */
133 #define INT_IF_ID_LINK_OFFSET PARAMETER_VALUE_OFFSET
134 #define INT_IF_ID_LINK_LENGTH 4
135 #define INT_IF_ID_CHNL_OFFSET INT_IF_ID_LINK_OFFSET
136 #define INT_IF_ID_CHNL_LENGTH 1
137 #define INT_INTERFACE_ID_LENGTH 4
138
139 static int linkIdentifier = -1;
140
141 static void
dissect_int_interface_identifier_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)142 dissect_int_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
143 {
144 guint32 identifier;
145 guint16 number_of_ids, id_number;
146 gint offset;
147
148 number_of_ids= (tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH) / INT_INTERFACE_ID_LENGTH;
149
150 offset = INT_IF_ID_LINK_OFFSET;
151 proto_item_append_text(parameter_item, "(");
152 for (id_number = 0; id_number < number_of_ids; id_number++) {
153 proto_tree_add_item(parameter_tree, hf_link_id, parameter_tvb, offset, INT_IF_ID_LINK_LENGTH, ENC_BIG_ENDIAN);
154 identifier = tvb_get_ntohl(parameter_tvb,offset)>>5;
155 if (id_number < 1) {
156 proto_item_append_text(parameter_item, "L:%d",identifier);
157 } else {
158 proto_item_append_text(parameter_item, " | L:%d",identifier);
159 }
160 linkIdentifier = identifier;
161
162 proto_tree_add_item(parameter_tree, hf_chnl_id, parameter_tvb, offset+3, INT_IF_ID_CHNL_LENGTH, ENC_BIG_ENDIAN);
163 identifier = tvb_get_guint8(parameter_tvb,offset+3)&0x1f;
164 proto_item_append_text(parameter_item, " C:%d", identifier);
165 offset += INT_INTERFACE_ID_LENGTH;
166 }
167 proto_item_append_text(parameter_item, ")");
168 }
169 /*----------------------V5UA Interface Identifier (int) (Draft,RFC)------------*/
170
171 /*----------------------Text Interface Identifier (RFC)------------------------*/
172
173 #define TEXT_IF_ID_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
174 #define TEXT_IF_ID_VALUE_OFFSET PARAMETER_VALUE_OFFSET
175 #define TEXT_IF_ID_HEADER_LENGTH PARAMETER_HEADER_LENGTH
176
177 static void
dissect_text_interface_identifier_parameter(packet_info * pinfo,tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)178 dissect_text_interface_identifier_parameter(packet_info *pinfo, tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
179 {
180 guint16 if_id_length;
181 const guint8* str;
182
183 if_id_length = tvb_get_ntohs(parameter_tvb, TEXT_IF_ID_LENGTH_OFFSET) - TEXT_IF_ID_HEADER_LENGTH;
184
185 proto_tree_add_item_ret_string(parameter_tree, hf_text_if_id, parameter_tvb, TEXT_IF_ID_VALUE_OFFSET, if_id_length, ENC_ASCII|ENC_NA, pinfo->pool, &str);
186 proto_item_append_text(parameter_item, " (0x%.*s)", if_id_length, str);
187 }
188 /*----------------------Text Interface Identifier (RFC)------------------------*/
189
190 /*----------------------DLCI & Envelope Function Address------------------------*/
191
192
193 /* interpretation of EFA-values */
194 static const value_string efa_values[] = {
195 { 8175, "ISDN Protocol" },
196 { 8176, "PSTN Protocol" },
197 { 8177, "CONTROL Protocol" },
198 { 8178, "BCC Protocol" },
199 { 8179, "PROT Protocol" },
200 { 8180, "Link Control Protocol" },
201 { 8191, "VALUE RESERVED" },
202 { 0, NULL } };
203
204 #define DLCI_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
205 #define DLCI_SAPI_OFFSET PARAMETER_VALUE_OFFSET
206 #define DLCI_HEADER_LENGTH PARAMETER_HEADER_LENGTH
207
208 #define DLCI_SAPI_LENGTH 1
209 #define DLCI_TEI_LENGTH 1
210 #define EFA_LENGTH 2
211
212 static void
dissect_dlci_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item,packet_info * pinfo)213 dissect_dlci_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item, packet_info *pinfo)
214 {
215 guint16 efa = 0, offset = 0;
216
217 guint8 sapi = -1;
218 guint8 tei = -1;
219
220
221 if (iua_version == RFC) offset = DLCI_SAPI_OFFSET;
222 else if(iua_version == DRAFT) offset = DLCI_HEADER_LENGTH + tvb_get_ntohs(parameter_tvb, DLCI_LENGTH_OFFSET);
223
224 proto_tree_add_item(parameter_tree, hf_dlci_zero_bit, parameter_tvb, offset, DLCI_SAPI_LENGTH, ENC_BIG_ENDIAN);
225 proto_tree_add_item(parameter_tree, hf_dlci_spare_bit, parameter_tvb, offset, DLCI_SAPI_LENGTH, ENC_BIG_ENDIAN);
226 proto_tree_add_item(parameter_tree, hf_dlci_sapi, parameter_tvb, offset, DLCI_SAPI_LENGTH, ENC_BIG_ENDIAN);
227
228 offset += DLCI_SAPI_LENGTH;
229 proto_tree_add_item(parameter_tree, hf_dlci_one_bit, parameter_tvb, offset, DLCI_TEI_LENGTH, ENC_BIG_ENDIAN);
230 proto_tree_add_item(parameter_tree, hf_dlci_tei, parameter_tvb, offset, DLCI_TEI_LENGTH, ENC_BIG_ENDIAN);
231
232 sapi = tvb_get_ntohs(parameter_tvb, offset-DLCI_TEI_LENGTH-DLCI_SAPI_LENGTH)>>2;
233 tei = tvb_get_ntohs(parameter_tvb, offset-DLCI_TEI_LENGTH)>>1;
234
235 offset += DLCI_TEI_LENGTH;
236 efa = tvb_get_ntohs(parameter_tvb, offset);
237 dlci_efa = tvb_get_ntohs(parameter_tvb, offset);
238
239 if (dlci_efa >= 0 && dlci_efa <= 8175) { col_append_fstr(pinfo->cinfo, COL_INFO, " | ISDN: %u", dlci_efa); }
240 else if (dlci_efa == 8176) { col_append_str(pinfo->cinfo, COL_INFO, " | PSTN"); }
241 else if (dlci_efa == 8177) { col_append_str(pinfo->cinfo, COL_INFO, " | Ctrl"); }
242 else if (dlci_efa == 8178) { col_append_str(pinfo->cinfo, COL_INFO, " | BCC"); }
243 else if (dlci_efa == 8179) { col_append_str(pinfo->cinfo, COL_INFO, " | ProtProt"); }
244 else if (dlci_efa == 8180) { col_append_str(pinfo->cinfo, COL_INFO, " | LinkCtrl"); }
245
246 if(efa <= 8175) {
247 proto_tree_add_uint_format_value(parameter_tree, hf_efa, parameter_tvb, offset, EFA_LENGTH, efa,
248 "ISDN (%u)", efa);
249 proto_item_append_text(parameter_item, " (SAPI:%u TEI:%u EFA:ISDN (%u))",sapi,tei,efa);
250 }
251 else if (efa > 8175 && efa <= 8180){
252 proto_tree_add_uint_format_value(parameter_tree, hf_efa, parameter_tvb, offset, EFA_LENGTH, efa,
253 "%s (%u)", val_to_str_const(efa, efa_values, "unknown EFA"),tvb_get_ntohs(parameter_tvb, offset));
254 proto_item_append_text(parameter_item, " (SAPI:%u TEI:%u EFA:%s (%u))",sapi,tei,val_to_str_const(efa, efa_values, "unknown EFA-value"),efa);
255 }
256 else {
257 proto_tree_add_uint_format_value(parameter_tree, hf_efa, parameter_tvb, offset, EFA_LENGTH, efa,
258 "RESERVED (%u)", efa);
259 proto_item_append_text(parameter_item, " (SAPI:%u TEI:%u EFA:RESERVED (%u))",sapi,tei,efa);
260 }
261
262
263 }
264 /*----------------------DLCI & Envelope Function Address------------------------*/
265
266 /*----------------------Error Indication (Draft)-------------------------------*/
267
268 /* define Error Code Parameter for Layer Management (MGMT) Messages */
269 #define MGMT_ERROR_INVALID_TEI_DRAFT 0x00
270 #define MGMT_ERROR_INVALID_IFID_DRAFT 0x01
271 #define MGMT_ERROR_UNDEFINIED_MSG_DRAFT 0x02
272 #define MGMT_ERROR_VERSION_ERR_DRAFT 0x03
273 #define MGMT_ERROR_INVALID_STID_DRAFT 0x04
274 #define MGMT_ERROR_INVALID_SCNV_DRAFT 0x05
275 #define MGMT_ERROR_INVALID_ALI_DRAFT 0x06
276
277 static const value_string draft_error_code_values[] = {
278 { MGMT_ERROR_INVALID_TEI_DRAFT, "Invalid TEI" },
279 { MGMT_ERROR_INVALID_IFID_DRAFT, "Invalid interface ID" },
280 { MGMT_ERROR_UNDEFINIED_MSG_DRAFT, "An unexpected message was received" },
281 { MGMT_ERROR_VERSION_ERR_DRAFT, "The IUA layers are of different version" },
282 { MGMT_ERROR_INVALID_STID_DRAFT, "Invalid SCTP stream identifier" },
283 { MGMT_ERROR_INVALID_SCNV_DRAFT, "Invalid SCN version" },
284 { MGMT_ERROR_INVALID_ALI_DRAFT, "Invalid Adaptation Layer Identifier" },
285 { 0, NULL } };
286
287 #define MGMT_ERROR_MSG_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
288 #define MGMT_ERROR_MSG_HEADER_LENGTH PARAMETER_HEADER_LENGTH
289
290 #define MGMT_ERROR_CODE_LENGTH 4
291
292 static void
dissect_draft_error_code_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree)293 dissect_draft_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree)
294 {
295 guint16 offset = MGMT_ERROR_MSG_HEADER_LENGTH + tvb_get_ntohs(parameter_tvb, MGMT_ERROR_MSG_LENGTH_OFFSET) + 4;
296 proto_tree_add_item(parameter_tree, hf_draft_error_code, parameter_tvb, offset, MGMT_ERROR_CODE_LENGTH, ENC_BIG_ENDIAN);
297 offset += MGMT_ERROR_CODE_LENGTH ;
298 if( tvb_reported_length_remaining(parameter_tvb,offset) > 0 )
299 proto_tree_add_item(parameter_tree, hf_info_string, parameter_tvb, offset, msg_length - offset,ENC_ASCII|ENC_NA);
300 }
301 /*----------------------Error Indication (Draft)-------------------------------*/
302
303 /*----------------------Error Indication (RFC)---------------------------------*/
304
305 /* define Error Code Parameter for Layer Management (MGMT) Messages */
306 #define MGMT_ERROR_INVALID_VERSION 0x01
307 #define MGMT_ERROR_INVALID_IF_ID 0x02
308 #define MGMT_ERROR_UNSUPPORTED_MSG_CLASS 0x03
309 #define MGMT_ERROR_UNSUPPORTED_MSG_TYPE 0x04
310 #define MGMT_ERROR_UNSUPPORTED_TRAFFIC_HANDLING_MODE 0x05
311 #define MGMT_ERROR_UNEXPECTED_MSG 0x06
312 #define MGMT_ERROR_PROTOCOL_ERROR 0x07
313 #define MGMT_ERROR_UNSUPPORTED_IF_ID_TYPE 0x08
314 #define MGMT_ERROR_INVALID_STREAM_ID 0x09
315 #define MGMT_ERROR_UNASSIGNED_TEI 0x0a
316 #define MGMT_ERROR_UNRECOGNIZED_SAPI 0x0b
317 #define MGMT_ERROR_INVALID_TEI_SAPI_COMBINATION 0x0c
318
319 static const value_string error_code_values[] = {
320 { MGMT_ERROR_INVALID_VERSION, "Invalid version" },
321 { MGMT_ERROR_INVALID_IF_ID, "Invalid interface identifier" },
322 { MGMT_ERROR_UNSUPPORTED_MSG_CLASS, "Unsupported message class" },
323 { MGMT_ERROR_UNSUPPORTED_MSG_TYPE, "Unsupported message type" },
324 { MGMT_ERROR_UNSUPPORTED_TRAFFIC_HANDLING_MODE, "Unsupported traffic handling mode" },
325 { MGMT_ERROR_UNEXPECTED_MSG, "Unexpected message" },
326 { MGMT_ERROR_PROTOCOL_ERROR, "Protocol error" },
327 { MGMT_ERROR_UNSUPPORTED_IF_ID_TYPE, "Unsupported interface identifier type" },
328 { MGMT_ERROR_INVALID_STREAM_ID, "Invalid stream identifier" },
329 { MGMT_ERROR_UNASSIGNED_TEI, "Unassigned TEI" },
330 { MGMT_ERROR_UNRECOGNIZED_SAPI, "Unrecognized SAPI" },
331 { MGMT_ERROR_INVALID_TEI_SAPI_COMBINATION, "Invalid TEI/SAPI combination" },
332 { 0, NULL } };
333
334 #define MGMT_ERROR_CODE_OFFSET PARAMETER_VALUE_OFFSET
335
336 static void
dissect_error_code_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)337 dissect_error_code_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
338 {
339 proto_tree_add_item(parameter_tree, hf_error_code, parameter_tvb, MGMT_ERROR_CODE_OFFSET, MGMT_ERROR_CODE_LENGTH, ENC_BIG_ENDIAN);
340 proto_item_append_text(parameter_item, " (%s)",
341 val_to_str_const(tvb_get_ntohl(parameter_tvb, MGMT_ERROR_CODE_OFFSET), error_code_values, "Unknown error code"));
342 }
343
344 static void
dissect_diagnostic_information_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)345 dissect_diagnostic_information_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
346 {
347 guint16 diag_info_length;
348
349 diag_info_length = tvb_get_ntohs(parameter_tvb, MGMT_ERROR_MSG_LENGTH_OFFSET) - MGMT_ERROR_MSG_HEADER_LENGTH;
350 proto_tree_add_item(parameter_tree, hf_diagnostic_info, parameter_tvb, PARAMETER_VALUE_OFFSET, diag_info_length, ENC_NA);
351 proto_item_append_text(parameter_item, " (%u byte%s)", diag_info_length, plurality(diag_info_length, "", "s"));
352 }
353 /*----------------------Error Indication (RFC)---------------------------------*/
354
355 /*----------------------Notify (RFC)-------------------------------------------*/
356
357 /* define Status Type parameters for Notify (NTFY) Messages */
358 #define NTFY_STATUS_TYPE_AS_STATE_CHANGE 0x01
359 #define NTFY_STATUS_TYPE_OTHER 0x02
360
361 static const value_string status_type_values[] = {
362 { NTFY_STATUS_TYPE_AS_STATE_CHANGE, "Application server state change" },
363 { NTFY_STATUS_TYPE_OTHER, "Other" },
364 { 0, NULL } };
365
366 /* define Status Identification parameters for NTFY Messages (AS state change)*/
367 #define NTFY_STATUS_IDENT_AS_DOWN 0x01
368 #define NTFY_STATUS_IDENT_AS_INACTIVE 0x02
369 #define NTFY_STATUS_IDENT_AS_ACTIVE 0x03
370 #define NTFY_STATUS_IDENT_AS_PENDING 0x04
371 /* define Status Identification parameters for NTFY Messages (Other)*/
372 #define NTFY_STATUS_INSUFFICIENT_ASP_RES_ACTIVE 0x01
373 #define NTFY_STATUS_ALTERNATE_ASP_ACTIVE 0x02
374
375 static const value_string status_type_id_values[] = {
376 { NTFY_STATUS_TYPE_AS_STATE_CHANGE * 256 * 256 + NTFY_STATUS_IDENT_AS_DOWN, "Application server down" },
377 { NTFY_STATUS_TYPE_AS_STATE_CHANGE * 256 * 256 + NTFY_STATUS_IDENT_AS_INACTIVE, "Application server inactive" },
378 { NTFY_STATUS_TYPE_AS_STATE_CHANGE * 256 * 256 + NTFY_STATUS_IDENT_AS_ACTIVE, "Application server active" },
379 { NTFY_STATUS_TYPE_AS_STATE_CHANGE * 256 * 256 + NTFY_STATUS_IDENT_AS_PENDING, "Application server pending" },
380 { NTFY_STATUS_TYPE_OTHER * 256 * 256 + NTFY_STATUS_INSUFFICIENT_ASP_RES_ACTIVE, "Insufficient ASP resources active in AS" },
381 { NTFY_STATUS_TYPE_OTHER * 256 * 256 + NTFY_STATUS_ALTERNATE_ASP_ACTIVE, "Alternate ASP active" },
382 { 0, NULL } };
383
384 #define NTFY_STATUS_TYPE_OFFSET PARAMETER_VALUE_OFFSET
385 #define NTFY_STATUS_TYPE_LENGTH 2
386 #define NTFY_STATUS_IDENT_OFFSET (NTFY_STATUS_TYPE_OFFSET + NTFY_STATUS_TYPE_LENGTH)
387 #define NTFY_STATUS_IDENT_LENGTH 2
388
389 static void
dissect_status_type_identification_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)390 dissect_status_type_identification_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
391 {
392 guint16 status_type, status_id;
393
394 status_type = tvb_get_ntohs(parameter_tvb, NTFY_STATUS_TYPE_OFFSET);
395 status_id = tvb_get_ntohs(parameter_tvb, NTFY_STATUS_IDENT_OFFSET);
396
397 proto_tree_add_item(parameter_tree, hf_status_type, parameter_tvb, NTFY_STATUS_TYPE_OFFSET, NTFY_STATUS_TYPE_LENGTH, ENC_BIG_ENDIAN);
398 proto_tree_add_uint_format_value(parameter_tree, hf_status_id, parameter_tvb, NTFY_STATUS_IDENT_OFFSET, NTFY_STATUS_IDENT_LENGTH,
399 status_id, "%u (%s)", status_id,
400 val_to_str_const(status_type * 256 * 256 + status_id, status_type_id_values, "unknown"));
401
402 proto_item_append_text(parameter_item, " (%s)",
403 val_to_str_const(status_type * 256 * 256 + status_id, status_type_id_values, "Unknown status information"));
404 }
405 /*----------------------Notify (RFC)-------------------------------------------*/
406
407 /*----------------------TEI Status Indication,Confirm (RFC)--------------------*/
408
409 /* define parameters for TEI Status (Indication,Confirm) Messages */
410 #define TEI_STATUS_ASSIGNED 0x0
411 #define TEI_STATUS_UNASSIGNED 0x1
412
413 static const value_string tei_status_values[] = {
414 { TEI_STATUS_ASSIGNED, "TEI is considered assigned by Q.921" },
415 { TEI_STATUS_UNASSIGNED, "TEI is considered unassigned by Q.921" },
416 { 0, NULL } };
417
418 #define TEI_STATUS_OFFSET PARAMETER_VALUE_OFFSET
419 #define TEI_STATUS_LENGTH 4
420
421 static void
dissect_tei_status_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)422 dissect_tei_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
423 {
424 proto_tree_add_item(parameter_tree, hf_tei_status, parameter_tvb, TEI_STATUS_OFFSET, TEI_STATUS_LENGTH, ENC_BIG_ENDIAN);
425 proto_item_append_text(parameter_item, " (%s)",
426 val_to_str_const(tvb_get_ntohl(parameter_tvb, TEI_STATUS_OFFSET), tei_status_values, "Unknown TEI status"));
427 }
428 /*----------------------TEI Status (RFC)---------------------------------------*/
429
430 /*----------------------TEI Status Indication,Confirm (Draft)------------------*/
431 #define TEI_DRAFT_IN_SERVICE 0x0
432 #define TEI_DRAFT_OUT_OF_SERVICE 0x1
433
434 static const value_string tei_draft_status_values[] = {
435 { TEI_DRAFT_IN_SERVICE, "TEI is in service" },
436 { TEI_DRAFT_OUT_OF_SERVICE,"TEI is out of service" },
437 { 0, NULL } };
438
439 #define TEI_STATUS_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
440
441 static void
dissect_draft_tei_status_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)442 dissect_draft_tei_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
443 {
444 gint offset;
445 offset = tvb_get_ntohs(parameter_tvb, TEI_STATUS_LENGTH_OFFSET) + 8;
446 if(tvb_reported_length_remaining(parameter_tvb, offset) > 0 ){
447 proto_tree_add_item(parameter_tree, hf_tei_draft_status, parameter_tvb, offset, TEI_STATUS_LENGTH, ENC_BIG_ENDIAN);
448 proto_item_append_text(parameter_item, " (%s)",
449 val_to_str_const(tvb_get_ntohl(parameter_tvb, offset), tei_draft_status_values, "Unknown TEI Status"));
450 }
451 }
452 /*----------------------TEI Status (Draft)-------------------------------------*/
453
454 /*----------------------ASP Up,Down,Active,Inactive (Draft)--------------------*/
455
456 static void
dissect_asp_msg_parameter(packet_info * pinfo,tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)457 dissect_asp_msg_parameter(packet_info *pinfo, tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
458 {
459 const guint8* str;
460 guint16 adaptation_layer_id_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
461
462 proto_tree_add_item_ret_string(parameter_tree, hf_adaptation_layer_id, parameter_tvb, PARAMETER_VALUE_OFFSET, adaptation_layer_id_length, ENC_ASCII|ENC_NA, pinfo->pool, &str);
463 proto_item_append_text(parameter_item, " (%.*s)", adaptation_layer_id_length, str);
464 }
465
466 static void
dissect_scn_protocol_id_parameter(packet_info * pinfo,tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)467 dissect_scn_protocol_id_parameter(packet_info *pinfo, tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
468 {
469 const guint8* str;
470 guint16 id_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
471 proto_tree_add_item_ret_string(parameter_tree, hf_scn_protocol_id, parameter_tvb, PARAMETER_VALUE_OFFSET, id_length, ENC_ASCII|ENC_NA, pinfo->pool, &str);
472 proto_item_append_text(parameter_item, " (%.*s)", id_length, str);
473 }
474
475 /*----------------------ASP (Draft)--------------------------------------------*/
476
477 /*----------------------ASP Down + Ack (RFC)--------------------------------*/
478 /* define reason parameter for Application Server Process Maintenance (ASPM) Messages */
479 #define ASP_REASON_MGMT 1
480
481 static const value_string asp_reason_values[] = {
482 { ASP_REASON_MGMT, "Management inhibit" },
483 { 0, NULL } };
484
485 #define ASP_REASON_OFFSET PARAMETER_VALUE_OFFSET
486 #define ASP_REASON_LENGTH 4
487
488 static void
dissect_asp_reason_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)489 dissect_asp_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
490 {
491 proto_tree_add_item(parameter_tree, hf_asp_reason, parameter_tvb, ASP_REASON_OFFSET, ASP_REASON_LENGTH, ENC_BIG_ENDIAN);
492 proto_item_append_text(parameter_item, " (%s)", val_to_str_const(tvb_get_ntohl(parameter_tvb, ASP_REASON_OFFSET), asp_reason_values, "Unknown ASP down reason"));
493 }
494
495
496 /*----------------------ASP (RFC)----------------------------------------------*/
497
498 /*----------------------Heartbeat Data + Ack (RFC)-----------------------------*/
499
500 #define HEARTBEAT_MSG_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
501 #define HEARTBEAT_DATA_OFFSET PARAMETER_VALUE_OFFSET
502 #define HEARTBEAT_MSG_HEADER_LENGTH PARAMETER_HEADER_LENGTH
503
504 static void
dissect_heartbeat_data_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)505 dissect_heartbeat_data_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
506 {
507 guint16 heartbeat_data_length;
508
509 heartbeat_data_length = tvb_get_ntohs(parameter_tvb, HEARTBEAT_MSG_LENGTH_OFFSET) - HEARTBEAT_MSG_HEADER_LENGTH;
510 proto_tree_add_item(parameter_tree, hf_heartbeat_data, parameter_tvb, HEARTBEAT_DATA_OFFSET, heartbeat_data_length, ENC_NA);
511 proto_item_append_text(parameter_item, " (%u byte%s)", heartbeat_data_length, plurality(heartbeat_data_length, "", "s"));
512 }
513 /*----------------------Heartbeat Data (RFC)-----------------------------------*/
514
515
516 /*----------------------ASP Active,Inactive + Ack (RFC)------------------------*/
517 #define OVER_RIDE_TRAFFIC_MODE_TYPE 1
518 #define LOAD_SHARE_TRAFFIC_MODE_TYPE 2
519
520 static const value_string traffic_mode_type_values[] = {
521 { OVER_RIDE_TRAFFIC_MODE_TYPE, "Over-ride" },
522 { LOAD_SHARE_TRAFFIC_MODE_TYPE, "Load-share" },
523 { 0, NULL } };
524
525 #define TRAFFIC_MODE_TYPE_LENGTH 4
526 #define TRAFFIC_MODE_TYPE_OFFSET PARAMETER_VALUE_OFFSET
527
528 static void
dissect_traffic_mode_type_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)529 dissect_traffic_mode_type_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
530 {
531 proto_tree_add_item(parameter_tree, hf_traffic_mode_type, parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET, TRAFFIC_MODE_TYPE_LENGTH, ENC_BIG_ENDIAN);
532 proto_item_append_text(parameter_item, " (%s)",
533 val_to_str_const(tvb_get_ntohl(parameter_tvb, TRAFFIC_MODE_TYPE_OFFSET), traffic_mode_type_values, "Unknown traffic mode type"));
534 }
535
536 #define INT_RANGE_START_OFFSET PARAMETER_VALUE_OFFSET
537 #define INT_RANGE_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
538 #define INT_RANGE_HEADER_LENGTH PARAMETER_HEADER_LENGTH
539
540 #define IF_ID_START_OFFSET 0
541 #define IF_ID_START_LENGTH 4
542 #define IF_ID_END_OFFSET (IF_ID_START_OFFSET + IF_ID_START_LENGTH)
543 #define IF_ID_END_LENGTH 4
544 #define IF_ID_INTERVAL_LENGTH (IF_ID_START_LENGTH + IF_ID_END_LENGTH)
545
546
547 static void
dissect_integer_range_interface_identifier_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)548 dissect_integer_range_interface_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
549 {
550 guint16 number_of_ranges, range_number, offset;
551
552 number_of_ranges = (tvb_get_ntohs(parameter_tvb, INT_RANGE_LENGTH_OFFSET) - INT_RANGE_HEADER_LENGTH) / IF_ID_INTERVAL_LENGTH;
553 offset = INT_RANGE_START_OFFSET;
554 for(range_number = 0; range_number < number_of_ranges; range_number++) {
555 proto_tree_add_item(parameter_tree, hf_if_range_start, parameter_tvb, offset + IF_ID_START_OFFSET, IF_ID_START_LENGTH, ENC_BIG_ENDIAN);
556 proto_tree_add_item(parameter_tree, hf_if_range_end, parameter_tvb, offset + IF_ID_END_OFFSET, IF_ID_END_LENGTH, ENC_BIG_ENDIAN);
557 offset += IF_ID_INTERVAL_LENGTH;
558 };
559
560 proto_item_append_text(parameter_item, " (%u range%s)", number_of_ranges, plurality(number_of_ranges, "", "s"));
561 }
562 /*----------------------ASP Active,Inactive (RFC)------------------------------*/
563
564 /*----------------------Data Request,Indication (Draft,RFC)--------------------*/
565
566 #define DISCRIMINATOR_OFFSET 0
567 #define DISCRIMINATOR_LENGTH 1
568 #define ADDRESS_OFFSET 1
569 #define ADDRESS_LENGTH 1
570 #define LOW_ADDRESS_OFFSET 2
571 #define LOW_ADDRESS_LENGTH 1
572
573 #define ALL_ADDRESS_OFFSET 1
574 #define ALL_ADDRESS_LENGTH 2
575
576 #define MSG_TYPE_OFFSET 3
577 #define MSG_TYPE_LENGTH 1
578 #define MSG_HEADER_LENGTH 4
579 #define INFO_ELEMENT_OFFSET 4
580 #define INFO_ELEMENT_LENGTH 1
581
582 static void
dissect_layer3_message(tvbuff_t * layer3_data_tvb,proto_tree * v5ua_tree,proto_item * parameter_item,packet_info * pinfo)583 dissect_layer3_message(tvbuff_t *layer3_data_tvb, proto_tree *v5ua_tree,proto_item *parameter_item, packet_info *pinfo)
584 {
585 guint16 discriminator_offset;
586
587 if(iua_version == DRAFT){
588 discriminator_offset = DISCRIMINATOR_OFFSET;
589 }
590 else{
591 discriminator_offset = DISCRIMINATOR_OFFSET + PARAMETER_HEADER_LENGTH;
592 }
593
594 if (tvb_get_guint8(layer3_data_tvb, discriminator_offset) == 0x48){
595 guint16 protocol_data_length;
596 tvbuff_t *protocol_data_tvb;
597
598 protocol_data_length = tvb_get_ntohs(layer3_data_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
599 protocol_data_tvb = tvb_new_subset_length(layer3_data_tvb, PARAMETER_VALUE_OFFSET, protocol_data_length);
600
601 call_dissector(v52_handle, protocol_data_tvb, pinfo, v5ua_tree);
602
603 proto_item_append_text(parameter_item, " (%u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
604
605 }
606 else{
607 guint16 protocol_data_length;
608 tvbuff_t *protocol_data_tvb;
609
610 protocol_data_length = tvb_get_ntohs(layer3_data_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
611 protocol_data_tvb = tvb_new_subset_length(layer3_data_tvb, PARAMETER_VALUE_OFFSET, protocol_data_length);
612 call_dissector(q931_handle, protocol_data_tvb, pinfo, v5ua_tree);
613
614 proto_item_append_text(parameter_item, " (%u byte%s)", protocol_data_length, plurality(protocol_data_length, "", "s"));
615 }
616 }
617
618 /*----------------------Data Request,Indication (Draft,RFC)------------------------*/
619
620 /*----------------------Establish Request,Confirm,Indication (Draft,RFC)-------*/
621 /*
622 * no additional parameter
623 */
624 /*----------------------Establish Request,Confirm,Indication (Draft,RFC)-------*/
625
626 /*----------------------Release Indication, Request (Draft,RFC)----------------*/
627
628 /* define parameters for Release Request and Indication Messages */
629 #define RELEASE_MGMT 0x0
630 #define RELEASE_PHYS 0x1
631 #define RELEASE_DM 0x2
632 #define RELEASE_OTHER 0x3
633
634 static const value_string release_reason_values[] = {
635 { RELEASE_MGMT, "Management layer generated release" },
636 { RELEASE_PHYS, "Physical layer alarm generated release" },
637 { RELEASE_DM, "Specific to a request" },
638 { RELEASE_OTHER, "Other reason" },
639 { 0, NULL } };
640
641 #define RELEASE_REASON_LENGTH_OFFSET PARAMETER_LENGTH_OFFSET
642 #define RELEASE_REASON_OFFSET PARAMETER_VALUE_OFFSET
643 #define RELEASE_REASON_LENGTH 4
644
645 static void
dissect_release_reason_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)646 dissect_release_reason_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
647 {
648 gint offset = RELEASE_REASON_OFFSET;
649 if(iua_version == DRAFT) offset = tvb_get_ntohs(parameter_tvb, RELEASE_REASON_LENGTH_OFFSET)+8;
650 proto_tree_add_item(parameter_tree, hf_release_reason, parameter_tvb, offset, RELEASE_REASON_LENGTH, ENC_BIG_ENDIAN);
651 if(iua_version != DRAFT)
652 proto_item_append_text(parameter_item, " (%s)",
653 val_to_str_const(tvb_get_ntohl(parameter_tvb, offset), release_reason_values, "Unknown release reason"));
654 }
655 /*----------------------Release Indication,Request (Draft,RFC)-----------------*/
656
657 /*----------------------Link Status Start,Stop Report (Draft,RFC)--------------*/
658 /*
659 * No additional Parameter
660 */
661 /*----------------------Link Status Start,Stop Report (Draft,RFC)--------------*/
662
663 /*----------------------Link Status Indication (Draft,RFC)---------------------*/
664
665 /* define parameters for Link Status Indication */
666 #define LINK_STATUS_OPERTIONAL 0x0
667 #define LINK_STATUS_NON_OPERTIONAL 0x1
668
669 static const value_string link_status_values[] = {
670 { LINK_STATUS_OPERTIONAL, "Link operational" },
671 { LINK_STATUS_NON_OPERTIONAL, "Link not operational" },
672 { 0, NULL } };
673
674 #define LINK_STATUS_OFFSET PARAMETER_VALUE_OFFSET
675 #define LINK_STATUS_LENGTH 4
676
677 static void
dissect_link_status_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)678 dissect_link_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
679 {
680 proto_tree_add_item(parameter_tree, hf_link_status, parameter_tvb, LINK_STATUS_OFFSET, LINK_STATUS_LENGTH, ENC_BIG_ENDIAN);
681 proto_item_append_text(parameter_item, " (%s)",
682 val_to_str_const(tvb_get_ntohl(parameter_tvb, LINK_STATUS_OFFSET),link_status_values, "Unknown Link status"));
683
684 link_status_operational = tvb_get_ntohl(parameter_tvb, LINK_STATUS_OFFSET);
685 }
686 /*----------------------Link Status Indication (Draft,RFC)---------------------*/
687
688 /*----------------------Sa-Bit (Draft,RFC)-------------------------------------*/
689
690 /* define parameter for sa-bit message */
691 #define SA_BIT_ID_ZERO 0x0
692 #define SA_BIT_ID_ONE 0x1
693 #define SA_BIT_VALUE_SA7 0x7
694
695 static const value_string sa_bit_values[] = {
696 { SA_BIT_ID_ZERO, "set value ZERO" },
697 { SA_BIT_ID_ONE, "set value ONE" },
698 { SA_BIT_VALUE_SA7, "Addresses the Sa7 Bit" },
699 { 0, NULL } };
700
701 #define SA_BIT_ID_OFFSET PARAMETER_VALUE_OFFSET
702 #define SA_BIT_ID_LENGTH 2
703 #define SA_BIT_VALUE_OFFSET (SA_BIT_ID_OFFSET + SA_BIT_ID_LENGTH)
704 #define SA_BIT_VALUE_LENGTH 2
705
706 static void
dissect_sa_bit_status_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)707 dissect_sa_bit_status_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
708 {
709 proto_tree_add_item(parameter_tree, hf_sa_bit_id, parameter_tvb, SA_BIT_ID_OFFSET, SA_BIT_ID_LENGTH, ENC_BIG_ENDIAN);
710 proto_tree_add_item(parameter_tree, hf_sa_bit_value, parameter_tvb, SA_BIT_VALUE_OFFSET, SA_BIT_VALUE_LENGTH, ENC_BIG_ENDIAN);
711 proto_item_append_text(parameter_item, " (%s %s)",
712 val_to_str_const(tvb_get_ntohs(parameter_tvb, SA_BIT_ID_OFFSET), sa_bit_values, "unknown"),
713 val_to_str_const(tvb_get_ntohs(parameter_tvb, SA_BIT_VALUE_OFFSET), sa_bit_values, "unknown Bit"));
714
715 sa_bit_id = tvb_get_ntohs(parameter_tvb, SA_BIT_VALUE_OFFSET);
716 }
717 /*----------------------Sa-Bit (Draft,RFC)-------------------------------------*/
718
719 /*----------------------Error Indication (RFC)---------------------------------*/
720
721 #define ERROR_REASON_OVERLOAD 0x1
722
723 static const value_string error_reason_values[] = {
724 { ERROR_REASON_OVERLOAD, "C-Channel is in overload state" },
725 { 0, NULL } };
726
727 #define ERROR_REASON_LENGTH 4
728 #define ERROR_REASON_OFFSET PARAMETER_VALUE_OFFSET
729
730 static void
dissect_error_indication_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)731 dissect_error_indication_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
732 {
733 proto_tree_add_item(parameter_tree, hf_error_reason, parameter_tvb, ERROR_REASON_OFFSET, ERROR_REASON_LENGTH, ENC_BIG_ENDIAN);
734 proto_item_append_text(parameter_item, " (%s)",
735 val_to_str_const(tvb_get_ntohl(parameter_tvb, ERROR_REASON_OFFSET), error_reason_values, "unknown"));
736 }
737 /*----------------------Error Indication (RFC)---------------------------------*/
738
739 /*--------------------------ASP identifier-------------------------------------*/
740 #define ASP_IDENTIFIER_LENGTH 4
741 #define ASP_IDENTIFIER_OFFSET PARAMETER_VALUE_OFFSET
742
743 static void
dissect_asp_identifier_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)744 dissect_asp_identifier_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
745 {
746 proto_tree_add_item(parameter_tree, hf_asp_identifier, parameter_tvb, ASP_IDENTIFIER_OFFSET, ASP_IDENTIFIER_LENGTH, ENC_BIG_ENDIAN);
747 proto_item_append_text(parameter_item, " (%d) ",tvb_get_ntohl(parameter_tvb,ASP_IDENTIFIER_OFFSET));
748 }
749 /*--------------------------ASP identifier-------------------------------------*/
750
751 #define INFO_STRING_OFFSET PARAMETER_VALUE_OFFSET
752
753 static void
dissect_info_string_parameter(packet_info * pinfo,tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)754 dissect_info_string_parameter(packet_info *pinfo, tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
755 {
756 guint16 info_string_length;
757 const guint8* str;
758
759 info_string_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
760 if(iua_version == DRAFT) info_string_length += 4;
761 if(info_string_length > 4){
762 info_string_length -= PARAMETER_HEADER_LENGTH;
763 proto_tree_add_item_ret_string(parameter_tree, hf_info_string, parameter_tvb, INFO_STRING_OFFSET, info_string_length, ENC_ASCII|ENC_NA, pinfo->pool, &str);
764 proto_item_append_text(parameter_item, " (%.*s)", info_string_length, str);
765 }
766 }
767
768
769 static void
dissect_unknown_parameter(tvbuff_t * parameter_tvb,proto_tree * parameter_tree,proto_item * parameter_item)770 dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
771 {
772
773 guint16 parameter_value_length;
774
775 parameter_value_length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) - PARAMETER_HEADER_LENGTH;
776 if (parameter_value_length > 0)
777 proto_tree_add_item(parameter_tree, hf_parameter_value, parameter_tvb, PARAMETER_VALUE_OFFSET, parameter_value_length, ENC_NA);
778
779 proto_item_append_text(parameter_item, " with tag %u and %u byte%s value",
780 tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET), parameter_value_length, plurality(parameter_value_length, "", "s"));
781 }
782
783 #define Reserved_TAG 0x00
784 #define INT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x01
785 #define ASP_MSG_PARAMETER_TAG 0x02
786 #define TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x03
787 #define INFO_PARAMETER_TAG 0x04
788 #define DLCI_PARAMETER_TAG 0x81
789 #define DIAGNOSTIC_INFORMATION_PARAMETER_TAG 0x07
790 #define INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG 0x08
791 #define HEARTBEAT_DATA_PARAMETER_TAG 0x09
792 #define ASP_DOWN_REASON_PARAMETER_TAG 0x0a
793 #define TRAFFIC_MODE_TYPE_PARAMETER_TAG 0x0b
794 #define ERROR_CODE_PARAMETER_TAG 0x0c
795 #define STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG 0x0d
796 #define PROTOCOL_DATA_PARAMETER_TAG 0x0e
797 #define RELEASE_REASON_PARAMETER_TAG 0x0f
798 #define TEI_STATUS_PARAMETER_TAG 0x10
799 #define ASP_IDENTIFIER_PARAMETER_TAG 0x11
800 #define NOT_USED_IN_IUA_PARAMETER_TAG 0x12
801 #define LINK_STATUS_PARAMETER_TAG 0x82
802 #define SA_BIT_STATUS_PARAMETER_TAG 0x83
803 #define ERROR_INDICATION_PARAMETER_TAG 0x84
804
805 static const value_string parameter_tag_values[] = {
806 { Reserved_TAG, "Reserved" },
807 { INT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Interface Identifier (integer)" },
808 { TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Interface Identifier (text)" },
809 { INFO_PARAMETER_TAG, "Info string" },
810 { DLCI_PARAMETER_TAG, "DLCI" },
811 { DIAGNOSTIC_INFORMATION_PARAMETER_TAG, "Diagnostic information" },
812 { INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG, "Interface Identifier Range" },
813 { HEARTBEAT_DATA_PARAMETER_TAG, "Hearbeat data" },
814 { ASP_DOWN_REASON_PARAMETER_TAG, "ASP DOWN Reason" },
815 { TRAFFIC_MODE_TYPE_PARAMETER_TAG, "Traffic mode type" },
816 { ERROR_CODE_PARAMETER_TAG, "Error code" },
817 { STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG, "Status type/identification" },
818 { PROTOCOL_DATA_PARAMETER_TAG, "Protocol Data" },
819 { RELEASE_REASON_PARAMETER_TAG, "Release Reason" },
820 { TEI_STATUS_PARAMETER_TAG, "TEI status" },
821 { ASP_IDENTIFIER_PARAMETER_TAG, "ASP Identifier" },
822 { NOT_USED_IN_IUA_PARAMETER_TAG, "Not used in IUA" },
823 { LINK_STATUS_PARAMETER_TAG, "Link status" },
824 { SA_BIT_STATUS_PARAMETER_TAG, "SA-Bit status" },
825 { ERROR_INDICATION_PARAMETER_TAG, "Error reason" },
826 { 0, NULL } };
827
828 static const value_string parameter_tag_draft_values[] = {
829 { INT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "V5UA Interface Identifier (int)" },
830 { ASP_MSG_PARAMETER_TAG, "ASP Adaption Layer ID" },
831 { TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG, "SCN Protocol Identifier" },
832 { INFO_PARAMETER_TAG, "Info" },
833 { PROTOCOL_DATA_PARAMETER_TAG, "Protocol Data" },
834 { LINK_STATUS_PARAMETER_TAG, "Link status" },
835 { SA_BIT_STATUS_PARAMETER_TAG, "SA-Bit status" },
836 { ERROR_INDICATION_PARAMETER_TAG, "Error reason" },
837 { 0, NULL } };
838
839 static void
dissect_parameter(tvbuff_t * parameter_tvb,packet_info * pinfo,proto_tree * v5ua_tree)840 dissect_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *v5ua_tree)
841 {
842 guint16 tag, length, padding_length;
843 proto_item *parameter_item;
844 proto_tree *parameter_tree;
845
846 /* extract tag and length from the parameter */
847 tag = tvb_get_ntohs(parameter_tvb, PARAMETER_TAG_OFFSET);
848 length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
849 /* on IUA-Draft messages the message length not including the message header */
850 if((iua_version==DRAFT)&&(tag<=0x4)){
851 /* at V5UA Header, length of header and length of DLCI+EFA must be added */
852 if(tag==0x1) length += 8;
853 /* at ASP message tags only length of header must be added */
854 else if(tag<=0x4) length += PARAMETER_HEADER_LENGTH;
855 /* for following message-tags are no length information available. Only in common msg header */
856 if((msg_class==0 || msg_class==1 || msg_class==9) && msg_type<=10)
857 length = msg_length;
858 }
859 padding_length = tvb_reported_length(parameter_tvb) - length;
860 paddingl = padding_length;
861
862 /* create proto_tree stuff */
863 switch(iua_version){
864 case RFC:
865 parameter_tree = proto_tree_add_subtree(v5ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, -1, ett_v5ua_parameter, ¶meter_item,
866 val_to_str_const(tag, parameter_tag_values, "Unknown parameter"));
867 /* add tag to the v5ua tree */
868 proto_tree_add_item(parameter_tree, hf_parameter_tag, parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH, ENC_BIG_ENDIAN);
869 break;
870 case DRAFT:
871 default:
872 parameter_tree = proto_tree_add_subtree(v5ua_tree, parameter_tvb, PARAMETER_HEADER_OFFSET, -1, ett_v5ua_parameter, ¶meter_item,
873 val_to_str_const(tag, parameter_tag_draft_values, "Unknown parameter"));
874
875 /* add tag to the v5ua tree */
876 proto_tree_add_item(parameter_tree, hf_parameter_tag_draft, parameter_tvb, PARAMETER_TAG_OFFSET, PARAMETER_TAG_LENGTH, ENC_BIG_ENDIAN);
877 break;
878 };
879
880 /* add length to the v5ua tree */
881 proto_tree_add_item(parameter_tree, hf_parameter_length, parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH, ENC_BIG_ENDIAN);
882
883 switch(tag) {
884 case INT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
885 if(iua_version == RFC) dissect_int_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
886 if(iua_version == DRAFT){
887 dissect_int_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
888 dissect_dlci_parameter(parameter_tvb, parameter_tree, parameter_item, pinfo);
889
890 /* for the following parameters no tag- and length-informations available. Parameters must be dissect with info from common msg header */
891 if(msg_class==0 && msg_type==0) dissect_draft_error_code_parameter(parameter_tvb, parameter_tree);
892 if(msg_class==1) dissect_draft_tei_status_parameter(parameter_tvb, parameter_tree, parameter_item);
893 if(msg_class==9){
894 if(msg_type==1||msg_type==2||msg_type==3||msg_type==4){
895 guint16 length_2, offset;
896 tvbuff_t *layer3_data_tvb;
897 offset = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET) + 8;
898 length_2 = msg_length - offset;
899 if(length_2 > 0){
900 if(tvb_get_guint8(parameter_tvb, offset) == 0x48){
901 layer3_data_tvb = tvb_new_subset_length(parameter_tvb, offset, length_2);
902 dissect_layer3_message(layer3_data_tvb, v5ua_tree, parameter_item, pinfo);
903 }
904 }
905 }
906 else if(msg_type==8||msg_type==10) dissect_release_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
907 }
908 }
909 break;
910 case ASP_MSG_PARAMETER_TAG:
911 dissect_asp_msg_parameter(pinfo, parameter_tvb, parameter_tree, parameter_item);
912 break;
913 case TEXT_INTERFACE_IDENTIFIER_PARAMETER_TAG:
914 if(iua_version == RFC)
915 dissect_text_interface_identifier_parameter(pinfo, parameter_tvb, parameter_tree, parameter_item);
916 if(iua_version == DRAFT)
917 dissect_scn_protocol_id_parameter(pinfo, parameter_tvb, parameter_tree, parameter_item);
918 break;
919 case INFO_PARAMETER_TAG:
920 dissect_info_string_parameter(pinfo, parameter_tvb, parameter_tree, parameter_item);
921 break;
922 case DLCI_PARAMETER_TAG:
923 dissect_dlci_parameter(parameter_tvb, parameter_tree, parameter_item, pinfo);
924 break;
925 case DIAGNOSTIC_INFORMATION_PARAMETER_TAG:
926 dissect_diagnostic_information_parameter(parameter_tvb, parameter_tree, parameter_item);
927 break;
928 case INTEGER_RANGE_INTERFACE_IDENTIFIER_PARAMETER_TAG:
929 dissect_integer_range_interface_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
930 break;
931 case HEARTBEAT_DATA_PARAMETER_TAG:
932 dissect_heartbeat_data_parameter(parameter_tvb, parameter_tree, parameter_item);
933 break;
934 case ASP_DOWN_REASON_PARAMETER_TAG:
935 dissect_asp_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
936 break;
937 case TRAFFIC_MODE_TYPE_PARAMETER_TAG:
938 dissect_traffic_mode_type_parameter(parameter_tvb, parameter_tree, parameter_item);
939 break;
940 case ERROR_CODE_PARAMETER_TAG:
941 dissect_error_code_parameter(parameter_tvb, parameter_tree, parameter_item);
942 break;
943 case STATUS_TYPE_INDENTIFICATION_PARAMETER_TAG:
944 dissect_status_type_identification_parameter(parameter_tvb, parameter_tree, parameter_item);
945 break;
946 case PROTOCOL_DATA_PARAMETER_TAG:
947 dissect_layer3_message(parameter_tvb, v5ua_tree, parameter_item, pinfo);
948 break;
949 case RELEASE_REASON_PARAMETER_TAG:
950 dissect_release_reason_parameter(parameter_tvb, parameter_tree, parameter_item);
951 break;
952 case TEI_STATUS_PARAMETER_TAG:
953 dissect_tei_status_parameter(parameter_tvb, parameter_tree, parameter_item);
954 break;
955 case ASP_IDENTIFIER_PARAMETER_TAG:
956 dissect_asp_identifier_parameter(parameter_tvb, parameter_tree, parameter_item);
957 break;
958 case LINK_STATUS_PARAMETER_TAG:
959 dissect_link_status_parameter(parameter_tvb, parameter_tree, parameter_item);
960 break;
961 case SA_BIT_STATUS_PARAMETER_TAG:
962 dissect_sa_bit_status_parameter(parameter_tvb, parameter_tree, parameter_item);
963 break;
964 case ERROR_INDICATION_PARAMETER_TAG:
965 dissect_error_indication_parameter( parameter_tvb, parameter_tree, parameter_item);
966 break;
967 default:
968 dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
969 break;
970 };
971
972 if (padding_length > 0){
973 proto_tree_add_item(parameter_tree, hf_parameter_padding, parameter_tvb, PARAMETER_HEADER_OFFSET + length, padding_length, ENC_NA);
974 }
975 }
976 /* dissect the V5UA-Parameters into subsets which are separated by Tag-Length-Header and call up the dissector for the subsets */
977 static void
dissect_parameters(tvbuff_t * parameters_tvb,packet_info * pinfo,proto_tree * tree _U_,proto_tree * v5ua_tree)978 dissect_parameters(tvbuff_t *parameters_tvb, packet_info *pinfo, proto_tree *tree _U_, proto_tree *v5ua_tree)
979 {
980 gint tag, offset, length, total_length, remaining_length;
981 tvbuff_t *parameter_tvb;
982
983
984 offset = 0;
985 while((remaining_length = tvb_reported_length_remaining(parameters_tvb, offset))) {
986 tag = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_TAG_OFFSET);
987 length = tvb_get_ntohs(parameters_tvb, offset + PARAMETER_LENGTH_OFFSET);
988 if(iua_version==DRAFT){
989 if(tag==0x1) length += 8; /* V5UA Header */
990 else if(tag<=0x4) length += PARAMETER_HEADER_LENGTH; /* ASP MSGs */
991
992 /* add the parameters which are not separated by tag-length-header to the V5UA header */
993 if((msg_class==0 || msg_class==1 || msg_class==9)&&msg_type<=10)
994 length = msg_length;
995 }
996 total_length = ADD_PADDING(length);
997 if (remaining_length >= length)
998 total_length = MIN(total_length, remaining_length);
999 /* create a tvb for the parameter including the padding bytes */
1000 parameter_tvb = tvb_new_subset_length(parameters_tvb, offset, total_length);
1001 dissect_parameter(parameter_tvb, pinfo, v5ua_tree);
1002 /* get rid of the handled parameter */
1003 offset += total_length;
1004 }
1005 }
1006
1007
1008 /* define the common header fields of V5UA MSG */
1009 #define COMMON_HEADER_VERSION_LENGTH 1
1010 #define COMMON_HEADER_RESERVED_LENGTH 1
1011 #define COMMON_HEADER_MSG_CLASS_LENGTH 1
1012 #define COMMON_HEADER_MSG_TYPE_LENGTH 1
1013 #define COMMON_HEADER_MSG_LENGTH_LENGTH 4
1014 #define COMMON_HEADER_LENGTH (COMMON_HEADER_VERSION_LENGTH + COMMON_HEADER_RESERVED_LENGTH +\
1015 COMMON_HEADER_MSG_CLASS_LENGTH + COMMON_HEADER_MSG_TYPE_LENGTH +\
1016 COMMON_HEADER_MSG_LENGTH_LENGTH)
1017
1018 /* define the offsets of common header */
1019 #define COMMON_HEADER_OFFSET 0
1020 #define COMMON_HEADER_VERSION_OFFSET COMMON_HEADER_OFFSET
1021 #define COMMON_HEADER_RESERVED_OFFSET (COMMON_HEADER_VERSION_OFFSET + COMMON_HEADER_VERSION_LENGTH)
1022 #define COMMON_HEADER_MSG_CLASS_OFFSET (COMMON_HEADER_RESERVED_OFFSET + COMMON_HEADER_RESERVED_LENGTH)
1023 #define COMMON_HEADER_MSG_TYPE_OFFSET (COMMON_HEADER_MSG_CLASS_OFFSET + COMMON_HEADER_MSG_CLASS_LENGTH)
1024 #define COMMON_HEADER_MSG_LENGTH_OFFSET (COMMON_HEADER_MSG_TYPE_OFFSET + COMMON_HEADER_MSG_TYPE_LENGTH)
1025 #define COMMON_HEADER_PARAMETERS_OFFSET (COMMON_HEADER_OFFSET + COMMON_HEADER_LENGTH)
1026
1027 /* version of V5UA protocol */
1028 #define V5UA_PROTOCOL_VERSION_RELEASE_1 1
1029
1030 static const value_string v5ua_protocol_version_values[] = {
1031 { V5UA_PROTOCOL_VERSION_RELEASE_1, "Release 1.0" },
1032 { 0, NULL } };
1033
1034 /* define V5UA MSGs */
1035 #define MSG_CLASS_MGMT_MSG 0
1036 #define MSG_CLASS_MGMT_MSG_DRAFT 1
1037 #define MSG_CLASS_ASPSM_MSG 3
1038 #define MSG_CLASS_ASPTM_MSG 4
1039 #define MSG_CLASS_V5PTM_MSG_DRAFT 9
1040 #define MSG_CLASS_V5PTM_MSG 14
1041
1042 static const value_string msg_class_values[] = {
1043 { MSG_CLASS_MGMT_MSG, "Management Messages" },
1044 { MSG_CLASS_MGMT_MSG_DRAFT,"Management Messages"},
1045 { MSG_CLASS_ASPSM_MSG, "ASP State Maintenance Message" },
1046 { MSG_CLASS_ASPTM_MSG, "ASP Traffic Maintenance Message" },
1047 { MSG_CLASS_V5PTM_MSG_DRAFT, "V5 Boundary Primitives Transport Message" },
1048 { MSG_CLASS_V5PTM_MSG, "V5 Boundary Primitives Transport Message" },
1049 { 0, NULL } };
1050
1051 /* message types for MGMT messages */
1052 #define MGMT_MSG_TYPE_ERR 0
1053 #define MGMT_MSG_TYPE_NTFY 1
1054 #define MGMT_MSG_TYPE_TEI_STATUS_REQ 2
1055 #define MGMT_MSG_TYPE_TEI_STATUS_CON 3
1056 #define MGMT_MSG_TYPE_TEI_STATUS_IND 4
1057 #define MGMT_MSG_TYPE_TEI_QUERY_REQUEST5 5
1058 #define MGMT_MSG_TYPE_TEI_QUERY_REQUEST 8
1059 /* end */
1060
1061 /* MGMT messages for Nortel draft version*/
1062 #define MGMT_MSG_DRAFT_TYPE_TEI_STATUS_REQ 1
1063 #define MGMT_MSG_DRAFT_TYPE_TEI_STATUS_CON 2
1064 #define MGMT_MSG_DRAFT_TYPE_TEI_STATUS_IND 3
1065 #define MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST5 5
1066 #define MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST 8
1067 /* end */
1068
1069 /* message types for ASPSM messages */
1070 #define ASPSM_MSG_TYPE_Reserved 0
1071 #define ASPSM_MSG_TYPE_UP 1
1072 #define ASPSM_MSG_TYPE_DOWN 2
1073 #define ASPSM_MSG_TYPE_BEAT 3
1074 #define ASPSM_MSG_TYPE_UP_ACK 4
1075 #define ASPSM_MSG_TYPE_DOWN_ACK 5
1076 #define ASPSM_MSG_TYPE_BEAT_ACK 6
1077
1078 /* message types for ASPTM messages */
1079 #define ASPTM_MSG_TYPE_Reserved 0
1080 #define ASPTM_MSG_TYPE_ACTIVE 1
1081 #define ASPTM_MSG_TYPE_INACTIVE 2
1082 #define ASPTM_MSG_TYPE_ACTIVE_ACK 3
1083 #define ASPTM_MSG_TYPE_INACTIVE_ACK 4
1084
1085 /* message types for V5PTM messages */
1086 #define V5PTM_MSG_TYPE_Reserved 0
1087 #define V5PTM_MSG_TYPE_DATA_REQUEST 1
1088 #define V5PTM_MSG_TYPE_DATA_INDICATION 2
1089 #define V5PTM_MSG_TYPE_UNIT_DATA_REQUEST 3
1090 #define V5PTM_MSG_TYPE_UNIT_DATA_INDICATION 4
1091 #define V5PTM_MSG_TYPE_ESTABLISH_REQUEST 5
1092 #define V5PTM_MSG_TYPE_ESTABLISH_CONFIRM 6
1093 #define V5PTM_MSG_TYPE_ESTABLISH_INDICATION 7
1094 #define V5PTM_MSG_TYPE_RELEASE_REQUEST 8
1095 #define V5PTM_MSG_TYPE_RELEASE_CONFIRM 9
1096 #define V5PTM_MSG_TYPE_RELEASE_INDICATION 10
1097 #define V5PTM_MSG_TYPE_LINK_STATUS_START_REPORTING 11
1098 #define V5PTM_MSG_TYPE_LINK_STATUS_STOP_REPORTING 12
1099 #define V5PTM_MSG_TYPE_LINK_STATUS_INDICATION 13
1100 #define V5PTM_MSG_TYPE_SA_BIT_SET_REQUEST 14
1101 #define V5PTM_MSG_TYPE_SA_BIT_SET_CONFIRM 15
1102 #define V5PTM_MSG_TYPE_SA_BIT_STATUS_REQUEST 16
1103 #define V5PTM_MSG_TYPE_SA_BIT_STATUS_INDICATION 17
1104 #define V5PTM_MSG_TYPE_ERROR_INDICATION 18
1105
1106 #define MGMT_MSG_TYPE_TEI_STATUS_REQUEST5 5
1107 #define MGMT_MSG_TYPE_TEI_STATUS_REQUEST 8
1108
1109 static const value_string msg_class_type_values[] = {
1110 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_ERR, "Error" },
1111 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_NTFY, "Notify" },
1112 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_STATUS_REQ, "TEI status request" },
1113 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_STATUS_CON, "TEI status confirmation" },
1114 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_STATUS_IND, "TEI status indication" },
1115 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_QUERY_REQUEST, "TEI query request" },
1116 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_QUERY_REQUEST5, "TEI query request" },
1117
1118 { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_STATUS_REQ, "TEI status request" },
1119 { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_STATUS_CON, "TEI status confirmation" },
1120 { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_STATUS_IND, "TEI status indication" },
1121 { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST, "TEI query request" },
1122 { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST5, "TEI query request" },
1123
1124
1125 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_Reserved, "Reserved" },
1126 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_UP, "ASP up" },
1127 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_DOWN, "ASP down" },
1128 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_BEAT, "Heartbeat" },
1129 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_UP_ACK, "ASP up ack" },
1130 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_DOWN_ACK, "ASP down ack" },
1131 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_BEAT_ACK, "Heartbeat ack" },
1132
1133 { MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_Reserved , "Reserved" },
1134 { MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_ACTIVE , "ASP active" },
1135 { MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_INACTIVE , "ASP inactive" },
1136 { MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_ACTIVE_ACK , "ASP active ack" },
1137 { MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_INACTIVE_ACK , "ASP inactive ack" },
1138
1139 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_Reserved, "Reserved" },
1140 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_DATA_REQUEST, "Data request" },
1141 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_DATA_INDICATION, "Data indication" },
1142 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_UNIT_DATA_REQUEST, "Unit data request" },
1143 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_UNIT_DATA_INDICATION, "Unit data indication" },
1144 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ESTABLISH_REQUEST, "Establish request" },
1145 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ESTABLISH_CONFIRM, "Establish confirmation" },
1146 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ESTABLISH_INDICATION, "Establish indication" },
1147 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_RELEASE_REQUEST, "Release request" },
1148 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_RELEASE_CONFIRM, "Release confirmation" },
1149 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_RELEASE_INDICATION, "Release indication" },
1150 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_LINK_STATUS_START_REPORTING,"Link status start reporting" },
1151 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_LINK_STATUS_STOP_REPORTING, "Link status stop reporting" },
1152 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_LINK_STATUS_INDICATION, "Link status indication" },
1153 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_REQUEST, "Sa-Bit set request" },
1154 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_CONFIRM, "Sa-Bit set confirm" },
1155 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_REQUEST, "Sa-Bit status request" },
1156 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_INDICATION, "Sa-Bit status indication" },
1157 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ERROR_INDICATION, "Error indication" },
1158
1159 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_Reserved, "Reserved" },
1160 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_DATA_REQUEST, "Data request" },
1161 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_DATA_INDICATION, "Data indication" },
1162 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_UNIT_DATA_REQUEST, "Unit data request" },
1163 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_UNIT_DATA_INDICATION, "Unit data indication" },
1164 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_REQUEST, "Establish request" },
1165 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_CONFIRM, "Establish confirmation" },
1166 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_INDICATION, "Establish indication" },
1167 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_REQUEST, "Release request" },
1168 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_CONFIRM, "Release confirmation" },
1169 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_INDICATION, "Release indication" },
1170 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_START_REPORTING,"Link status start reporting" },
1171 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_STOP_REPORTING, "Link status stop reporting" },
1172 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_INDICATION, "Link status indication" },
1173 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_REQUEST, "Sa-Bit set request" },
1174 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_CONFIRM, "Sa-Bit set confirm" },
1175 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_REQUEST, "Sa-Bit status request" },
1176 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_INDICATION, "Sa-Bit status indication" },
1177 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ERROR_INDICATION, "Error indication" },
1178
1179 { 0, NULL } };
1180
1181 static const value_string msg_class_type_values_short[] = {
1182 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_ERR, "Error" },
1183 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_NTFY, "Notify" },
1184 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_STATUS_REQ, "TEI status request" },
1185 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_STATUS_CON, "TEI status confirmation" },
1186 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_STATUS_IND, "TEI status indication" },
1187 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_QUERY_REQUEST, "TEI query request" },
1188 { MSG_CLASS_MGMT_MSG * 256 + MGMT_MSG_TYPE_TEI_QUERY_REQUEST5, "TEI query request" },
1189
1190 { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_STATUS_REQ, "TEI status request" },
1191 { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_STATUS_CON, "TEI status confirmation" },
1192 { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_STATUS_IND, "TEI status indication" },
1193 { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST, "TEI query request" },
1194 { MSG_CLASS_MGMT_MSG_DRAFT * 256 + MGMT_MSG_DRAFT_TYPE_TEI_QUERY_REQUEST5, "TEI query request" },
1195
1196
1197 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_Reserved, "Reserved" },
1198 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_UP, "ASP up" },
1199 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_DOWN, "ASP down" },
1200 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_BEAT, "Heartbeat" },
1201 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_UP_ACK, "ASP up ack" },
1202 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_DOWN_ACK, "ASP down ack" },
1203 { MSG_CLASS_ASPSM_MSG * 256 + ASPSM_MSG_TYPE_BEAT_ACK, "Heartbeat ack" },
1204
1205 { MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_Reserved , "Reserved" },
1206 { MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_ACTIVE , "ASP active" },
1207 { MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_INACTIVE , "ASP inactive" },
1208 { MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_ACTIVE_ACK , "ASP active ack" },
1209 { MSG_CLASS_ASPTM_MSG * 256 + ASPTM_MSG_TYPE_INACTIVE_ACK , "ASP inactive ack" },
1210
1211 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_Reserved, "Reserved" },
1212 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_DATA_REQUEST, "Data request" },
1213 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_DATA_INDICATION, "Data indication" },
1214 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_UNIT_DATA_REQUEST, "Unit data request" },
1215 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_UNIT_DATA_INDICATION, "Unit data indication" },
1216 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ESTABLISH_REQUEST, "Establish request" },
1217 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ESTABLISH_CONFIRM, "Establish confirmation" },
1218 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ESTABLISH_INDICATION, "Establish indication" },
1219 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_RELEASE_REQUEST, "Release request" },
1220 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_RELEASE_CONFIRM, "Release confirmation" },
1221 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_RELEASE_INDICATION, "Release indication" },
1222 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_LINK_STATUS_START_REPORTING,"Link status start reporting" },
1223 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_LINK_STATUS_STOP_REPORTING, "Link status stop reporting" },
1224 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_LINK_STATUS_INDICATION, "Link status indication" },
1225 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_REQUEST, "Sa-Bit set request" },
1226 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_CONFIRM, "Sa-Bit set confirm" },
1227 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_REQUEST, "Sa-Bit status request" },
1228 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_INDICATION, "Sa-Bit status indication" },
1229 { MSG_CLASS_V5PTM_MSG_DRAFT * 256 + V5PTM_MSG_TYPE_ERROR_INDICATION, "Error indication" },
1230
1231
1232 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_Reserved, "Reserved" },
1233 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_DATA_REQUEST, "Data Req" },
1234 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_DATA_INDICATION, "Data Ind" },
1235 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_UNIT_DATA_REQUEST, "U Data Req" },
1236 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_UNIT_DATA_INDICATION, "U Data Ind" },
1237 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_REQUEST, "Est Req" },
1238 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_CONFIRM, "Est Conf" },
1239 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ESTABLISH_INDICATION, "Est Ind" },
1240 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_REQUEST, "Rel Req" },
1241 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_CONFIRM, "Rel Con" },
1242 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_RELEASE_INDICATION, "Rel Ind" },
1243 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_START_REPORTING,"Link Status Start Rep" },
1244 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_STOP_REPORTING, "Link Status Stop Rep" },
1245 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_LINK_STATUS_INDICATION, "Link Status Ind" },
1246 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_REQUEST, "Sa-Bit Set Req" },
1247 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_SET_CONFIRM, "Sa-Bit set Conf" },
1248 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_REQUEST, "Sa-Bit Status Req" },
1249 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_SA_BIT_STATUS_INDICATION, "Sa-Bit Status Ind" },
1250 { MSG_CLASS_V5PTM_MSG * 256 + V5PTM_MSG_TYPE_ERROR_INDICATION, "Error Ind" },
1251 { 0, NULL } };
1252
1253
1254 static void
dissect_common_header(tvbuff_t * common_header_tvb,packet_info * pinfo,proto_tree * v5ua_tree)1255 dissect_common_header(tvbuff_t *common_header_tvb, packet_info *pinfo, proto_tree *v5ua_tree)
1256 {
1257 proto_item *common_header_item;
1258 proto_tree *common_header_tree;
1259
1260 guint8 message_class, message_type;
1261
1262 message_class = tvb_get_guint8(common_header_tvb, COMMON_HEADER_MSG_CLASS_OFFSET);
1263 message_type = tvb_get_guint8(common_header_tvb, COMMON_HEADER_MSG_TYPE_OFFSET);
1264
1265 /* Add message type into info column */
1266 col_set_str(pinfo->cinfo, COL_INFO, val_to_str_const(message_class * 256 + message_type, msg_class_type_values_short, "UNKNOWN"));
1267
1268
1269 if (v5ua_tree) {
1270
1271 /* create proto_tree stuff */
1272 common_header_tree = proto_tree_add_subtree(v5ua_tree, common_header_tvb, COMMON_HEADER_OFFSET, -1,
1273 ett_v5ua_common_header, &common_header_item, "Common Msg-Header");
1274
1275 /* add the components of the common header to the protocol tree */
1276 proto_tree_add_item(common_header_tree, hf_version, common_header_tvb, COMMON_HEADER_VERSION_OFFSET, COMMON_HEADER_VERSION_LENGTH, ENC_BIG_ENDIAN);
1277 proto_tree_add_item(common_header_tree, hf_reserved, common_header_tvb, COMMON_HEADER_RESERVED_OFFSET, COMMON_HEADER_RESERVED_LENGTH, ENC_BIG_ENDIAN);
1278 proto_tree_add_item(common_header_tree, hf_msg_class, common_header_tvb, COMMON_HEADER_MSG_CLASS_OFFSET, COMMON_HEADER_MSG_CLASS_LENGTH, ENC_BIG_ENDIAN);
1279 proto_tree_add_uint_format_value(common_header_tree, hf_msg_type,
1280 common_header_tvb, COMMON_HEADER_MSG_TYPE_OFFSET, COMMON_HEADER_MSG_TYPE_LENGTH,
1281 message_type, "%s ( %u )",
1282 val_to_str_const(message_class * 256 + message_type, msg_class_type_values, "reserved"), message_type);
1283 proto_tree_add_item(common_header_tree, hf_msg_length, common_header_tvb, COMMON_HEADER_MSG_LENGTH_OFFSET, COMMON_HEADER_MSG_LENGTH_LENGTH, ENC_BIG_ENDIAN);
1284
1285 /* Add message type to the Common Msg-Header line */
1286 proto_item_append_text(common_header_item, " (%s)",val_to_str_const(message_class * 256 + message_type, msg_class_type_values, "Unknown Msg-Type"));
1287 messageclassCopy = message_class;
1288 }
1289
1290 /* the following info are required to dissect IUA-Draft messages.
1291 In the DRAFT-Specification V5UA-Parameters are not separated by Tag-Length-Header (as defined in RFC-Spec) */
1292 if (iua_version == DRAFT){
1293 msg_class = message_class;
1294 msg_type = message_type;
1295 msg_length = tvb_get_ntohl (common_header_tvb, COMMON_HEADER_MSG_LENGTH_OFFSET);
1296 }
1297 }
1298
1299 /* dissect the V5UA-packet in two subsets: Common Msg-Header (used by all msgs) and V5UA-parameter */
1300 static void
dissect_v5ua_message(tvbuff_t * tvb,packet_info * pinfo,proto_tree * tree,proto_tree * v5ua_tree)1301 dissect_v5ua_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *v5ua_tree)
1302 {
1303 tvbuff_t *common_header_tvb, *parameters_tvb;
1304
1305 common_header_tvb = tvb_new_subset_length(tvb, COMMON_HEADER_OFFSET, COMMON_HEADER_LENGTH);
1306 dissect_common_header(common_header_tvb, pinfo, v5ua_tree);
1307
1308 parameters_tvb = tvb_new_subset_remaining(tvb, COMMON_HEADER_LENGTH);
1309 dissect_parameters(parameters_tvb, pinfo, tree, v5ua_tree);
1310 if (dlci_efa >= 0 && dlci_efa <= 8175) {
1311 if ((messageclassCopy == 0) || (messageclassCopy == 3) || (messageclassCopy == 4)) {
1312 messageclassCopy = -1;
1313 }
1314 else {
1315 col_append_str(pinfo->cinfo, COL_INFO, " | ");
1316 col_append_fstr(pinfo->cinfo, COL_INFO, "LinkId: %u", linkIdentifier);
1317 }
1318 }
1319
1320 if (sa_bit_id > -1) {
1321 col_append_str(pinfo->cinfo, COL_INFO, " | ");
1322 col_append_fstr(pinfo->cinfo, COL_INFO, "SA7bit: %u", sa_bit_id);
1323 sa_bit_id = -1;
1324 }
1325
1326 if (link_status_operational > -1) {
1327 if (link_status_operational == 0) {
1328 col_append_str(pinfo->cinfo, COL_INFO, " | operational");
1329 }
1330 else if (link_status_operational == 1) {
1331 col_append_str(pinfo->cinfo, COL_INFO, " | non-operational");
1332 }
1333 link_status_operational = -1;
1334 }
1335
1336 }
1337
1338 static int
dissect_v5ua(tvbuff_t * tvb,packet_info * pinfo,proto_tree * tree,void * data _U_)1339 dissect_v5ua(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
1340 {
1341 gint offset, remaining_length, length, tag, one_bit;
1342
1343
1344 /* Set up structures needed to add the protocol subtree and manage it */
1345 proto_tree *v5ua_tree;
1346 proto_item *ti;
1347
1348 /* Make entries in Protocol column and Info column on summary display */
1349 col_set_str(pinfo->cinfo, COL_PROTOCOL, "V5UA");
1350 /* end */
1351 col_clear(pinfo->cinfo, COL_INFO);
1352
1353 /* create display subtree for the protocol */
1354 ti = proto_tree_add_item(tree, proto_v5ua, tvb, 0, -1, ENC_NA);
1355 v5ua_tree = proto_item_add_subtree(ti, ett_v5ua);
1356
1357 /* detect version of IUA */
1358 iua_version = RFC;
1359 offset = COMMON_HEADER_LENGTH;
1360
1361 remaining_length = tvb_reported_length_remaining(tvb, offset);
1362
1363 while(remaining_length) {
1364 tag = tvb_get_ntohs(tvb, offset);
1365 /*0x01,0x03: Inerface Id (draft&RFC)*/
1366 if(tag==0x1){
1367 length = tvb_get_ntohs(tvb, offset+2);
1368 tag = tvb_get_ntohs(tvb, offset+length);
1369 /* tag 0x5 indicates the DLCI in the V5UA-Header accoriding to RFC spec */
1370 if(tag==0x81){
1371 remaining_length = FALSE;
1372 }
1373 else{
1374 one_bit = tvb_get_guint8(tvb, offset+4+length+1);
1375 /* no indication from DLCI by tag (in the V5UA-Header according DRAFT).
1376 Thus the ONE-Bit within DLCI have to compare */
1377 if((one_bit & 0x01) == 0x01){
1378 iua_version = DRAFT;
1379 remaining_length = FALSE;
1380 }
1381 /* an indication to incorrect bit in DLCI.
1382 Must be include to decode an incorrect implemented message on Nortels PVG*/
1383 else{
1384 proto_item_append_text(v5ua_tree, " !! DLCI INCORRECT !!");
1385
1386 iua_version = DRAFT;
1387 remaining_length = FALSE;
1388 }
1389 }
1390 }
1391 /*0x02: AL Id (draft) following after common msg header without V5UA header*/
1392 else if(tag==0x02){
1393 iua_version = DRAFT;
1394 remaining_length = FALSE;
1395 }
1396 /*0x03: Text formatted IId SHALL not be supported by draft*/
1397 else if(tag==0x03){
1398 iua_version = RFC;
1399 remaining_length = FALSE;
1400 }
1401 else if(tag==0x11){
1402 remaining_length = FALSE;
1403 }
1404 /*ASP, Notify and Error messages (RFC) only contain common msg header followed by parameter*/
1405 else if(tag==0x04 || tag == 0x0a || tag == 0x0b || tag == 0x0c || tag == 0x0d){
1406 remaining_length = FALSE;
1407 }
1408 else{
1409 offset+=2;
1410 remaining_length = tvb_reported_length_remaining(tvb, offset);
1411 }
1412 /* add a notice for the draft version */
1413 if(iua_version == DRAFT){
1414 col_set_str(pinfo->cinfo, COL_PROTOCOL, "V5UA (draft)");
1415 }
1416 }
1417
1418 /* dissect the message */
1419 dissect_v5ua_message(tvb, pinfo, tree, v5ua_tree);
1420 return tvb_captured_length(tvb);
1421 }
1422
1423
1424 /* Register the protocol with Wireshark */
1425
1426 /* this format is require because a script is used to build the C function
1427 that calls all the protocol registration. */
1428
1429 void
proto_register_v5ua(void)1430 proto_register_v5ua(void)
1431 {
1432
1433 /* Setup list of header fields */
1434 static hf_register_info hf[] = {
1435 { &hf_version,
1436 { "Version", "v5ua.version",
1437 FT_UINT8, BASE_DEC, VALS(v5ua_protocol_version_values), 0x0,
1438 NULL, HFILL } },
1439 { &hf_reserved,
1440 { "Reserved", "v5ua.reserved",
1441 FT_UINT8, BASE_HEX, NULL, 0x0,
1442 NULL, HFILL } },
1443 { &hf_msg_class,
1444 { "Message class", "v5ua.msg_class",
1445 FT_UINT8, BASE_DEC, VALS(msg_class_values), 0x0,
1446 NULL, HFILL } },
1447 { &hf_msg_type,
1448 { "Message Type", "v5ua.msg_type",
1449 FT_UINT8, BASE_DEC, NULL, 0x0,
1450 NULL, HFILL } },
1451 #if 0
1452 { &hf_msg_type_id,
1453 { "Message Type ID", "v5ua.msg_type_id",
1454 FT_UINT8, BASE_DEC, VALS(msg_class_type_values), 0x0,
1455 NULL, HFILL } },
1456 #endif
1457 { &hf_msg_length,
1458 { "Message length", "v5ua.msg_length",
1459 FT_UINT32, BASE_DEC, NULL, 0x0,
1460 NULL, HFILL } },
1461 { &hf_link_id,
1462 { "Link Identifier", "v5ua.link_id",
1463 FT_UINT32, BASE_DEC, NULL, 0xffffffe0,
1464 NULL, HFILL } },
1465 { &hf_chnl_id,
1466 { "Channel Identifier", "v5ua.channel_id",
1467 FT_UINT8, BASE_DEC, NULL, 0x1f,
1468 NULL, HFILL } },
1469
1470 { &hf_adaptation_layer_id,
1471 { "Adaptation Layer ID", "v5ua.adaptation_layer_id",
1472 FT_STRING, BASE_NONE,NULL, 0x0,
1473 NULL, HFILL } },
1474 { &hf_text_if_id,
1475 { "Text interface identifier","v5ua.text_interface_id",
1476 FT_STRING, BASE_NONE,NULL, 0x0,
1477 NULL, HFILL } },
1478 { &hf_scn_protocol_id,
1479 { "SCN Protocol Identifier","v5ua.scn_protocol_id",
1480 FT_STRING, BASE_NONE,NULL, 0x0,
1481 NULL, HFILL } },
1482 { &hf_info_string,
1483 { "Info String", "v5ua.info_string",
1484 FT_STRING, BASE_NONE,NULL, 0x0,
1485 NULL, HFILL } },
1486 { &hf_asp_identifier,
1487 { "ASP Identifier", "v5ua.asp_identifier",
1488 FT_UINT32, BASE_HEX, NULL, 0x0,
1489 NULL, HFILL } },
1490 { &hf_dlci_zero_bit,
1491 { "Zero bit", "v5ua.dlci_zero_bit",
1492 FT_BOOLEAN, 8, NULL, 0x01,
1493 NULL, HFILL } },
1494 { &hf_dlci_spare_bit,
1495 { "Spare bit", "v5ua.dlci_spare_bit",
1496 FT_BOOLEAN, 8, NULL, 0x02,
1497 NULL, HFILL } },
1498 { &hf_dlci_sapi,
1499 { "SAPI", "v5ua.dlci_sapi",
1500 FT_UINT8, BASE_HEX, NULL, 0xfc,
1501 NULL, HFILL } },
1502 { &hf_dlci_one_bit,
1503 { "One bit", "v5ua.dlci_one_bit",
1504 FT_BOOLEAN, 8, NULL, 0x01,
1505 NULL, HFILL } },
1506 { &hf_dlci_tei,
1507 { "TEI", "v5ua.dlci_tei",
1508 FT_UINT8, BASE_HEX, NULL, 0xfe,
1509 NULL, HFILL } },
1510 { &hf_efa,
1511 { "Envelope Function Address","v5ua.efa",
1512 FT_UINT16, BASE_DEC, VALS(efa_values), 0x0,
1513 NULL, HFILL } },
1514 #if 0
1515 { &hf_spare_efa,
1516 { "Envelope Function Address (spare)","v5ua.efa",
1517 FT_UINT16, BASE_DEC, NULL, ~7,
1518 NULL, HFILL } },
1519 #endif
1520 { &hf_asp_reason,
1521 { "Reason", "v5ua.asp_reason",
1522 FT_UINT32, BASE_HEX, VALS(asp_reason_values), 0x0,
1523 NULL, HFILL } },
1524 { &hf_release_reason,
1525 { "Release Reason", "v5ua.release_reason",
1526 FT_UINT32, BASE_HEX, VALS(release_reason_values), 0x0,
1527 NULL, HFILL } },
1528 { &hf_tei_status,
1529 { "TEI status", "v5ua.tei_status",
1530 FT_UINT32, BASE_HEX, VALS(tei_status_values), 0x0,
1531 NULL, HFILL } },
1532 { &hf_tei_draft_status,
1533 { "TEI status", "v5ua.tei_draft_status",
1534 FT_UINT32, BASE_HEX, VALS(tei_draft_status_values), 0x0,
1535 NULL, HFILL } },
1536 { &hf_link_status,
1537 { "Link Status", "v5ua.link_status",
1538 FT_UINT32, BASE_HEX, VALS(link_status_values), 0x0,
1539 NULL, HFILL } },
1540 { &hf_sa_bit_id,
1541 { "BIT ID", "v5ua.sa_bit_id",
1542 FT_UINT16, BASE_HEX, VALS(sa_bit_values), 0x0,
1543 NULL, HFILL } },
1544 { &hf_sa_bit_value,
1545 { "Bit Value", "v5ua.sa_bit_value",
1546 FT_UINT16, BASE_HEX, VALS(sa_bit_values), 0x0,
1547 NULL, HFILL } },
1548 { &hf_parameter_tag,
1549 { "Parameter Tag", "v5ua.parameter_tag",
1550 FT_UINT16, BASE_HEX, VALS(parameter_tag_values), 0x0,
1551 NULL, HFILL } },
1552 { &hf_parameter_tag_draft,
1553 { "Parameter Tag", "v5ua.parameter_tag",
1554 FT_UINT16, BASE_HEX, VALS(parameter_tag_draft_values), 0x0,
1555 NULL, HFILL } },
1556 { &hf_parameter_length,
1557 { "Parameter length", "v5ua.parameter_length",
1558 FT_UINT16, BASE_DEC, NULL, 0x0,
1559 NULL, HFILL } },
1560 { &hf_parameter_value,
1561 { "Parameter value", "v5ua.parameter_value",
1562 FT_BYTES, BASE_NONE,NULL, 0x0,
1563 NULL, HFILL } },
1564 { &hf_parameter_padding,
1565 { "Parameter padding", "v5ua.parameter_padding",
1566 FT_BYTES, BASE_NONE,NULL, 0x0,
1567 NULL, HFILL } },
1568 { &hf_diagnostic_info,
1569 { "Diagnostic Information", "v5ua.diagnostic_info",
1570 FT_BYTES, BASE_NONE,NULL, 0x0,
1571 NULL, HFILL } },
1572 { &hf_if_range_start,
1573 { "Interface range Start", "v5ua.interface_range_start",
1574 FT_UINT32, BASE_HEX, NULL, 0x0,
1575 NULL, HFILL } },
1576 { &hf_if_range_end,
1577 { "Interface range End", "v5ua.interface_range_end",
1578 FT_UINT32, BASE_HEX, NULL, 0x0,
1579 NULL, HFILL } },
1580 { &hf_heartbeat_data,
1581 { "Heartbeat data", "v5ua.heartbeat_data",
1582 FT_BYTES, BASE_NONE,NULL, 0x0,
1583 NULL, HFILL } },
1584 { &hf_traffic_mode_type,
1585 { "Traffic mode type", "v5ua.traffic_mode_type",
1586 FT_UINT32, BASE_HEX, VALS(traffic_mode_type_values), 0x0,
1587 NULL, HFILL } },
1588 { &hf_error_code,
1589 { "Error code", "v5ua.error_code",
1590 FT_UINT32, BASE_HEX, VALS(error_code_values), 0x0,
1591 NULL, HFILL } },
1592 { &hf_draft_error_code,
1593 { "Error code (draft)", "v5ua.draft_error_code",
1594 FT_UINT32, BASE_HEX, VALS(draft_error_code_values), 0x0,
1595 NULL, HFILL } },
1596 { &hf_status_type,
1597 { "Status type", "v5ua.status_type",
1598 FT_UINT16, BASE_DEC, VALS(status_type_values), 0x0,
1599 NULL, HFILL } },
1600 { &hf_status_id,
1601 { "Status identification", "v5ua.status_id",
1602 FT_UINT16, BASE_DEC, NULL, 0x0,
1603 NULL, HFILL } },
1604 { &hf_error_reason,
1605 { "Error Reason", "v5ua.error_reason",
1606 FT_UINT32, BASE_HEX, VALS(error_reason_values), 0x0,
1607 NULL, HFILL } }
1608 };
1609
1610 /* Setup protocol subtree array */
1611 static gint *ett[] = {
1612 &ett_v5ua,
1613 &ett_v5ua_common_header,
1614 &ett_v5ua_parameter,
1615 &ett_v5ua_layer3
1616 };
1617
1618 /* Register the protocol name and description */
1619 proto_v5ua = proto_register_protocol("V5.2-User Adaptation Layer", "V5UA", "v5ua");
1620
1621 /* Required function calls to register the header fields and subtrees used */
1622 proto_register_field_array(proto_v5ua, hf, array_length(hf));
1623 proto_register_subtree_array(ett, array_length(ett));
1624 }
1625
1626
1627 /* In RFC specification the SCTP registered User Port Number Assignment for V5UA is 5675 */
1628 #define SCTP_PORT_V5UA_RFC 5675
1629 #define SCTP_PORT_V5UA_DRAFT 10001
1630
1631 void
proto_reg_handoff_v5ua(void)1632 proto_reg_handoff_v5ua(void)
1633 {
1634 dissector_handle_t v5ua_handle;
1635
1636 v5ua_handle = create_dissector_handle(dissect_v5ua, proto_v5ua);
1637 q931_handle = find_dissector_add_dependency("q931", proto_v5ua);
1638 v52_handle = find_dissector_add_dependency("v52", proto_v5ua);
1639
1640 dissector_add_uint("sctp.port", SCTP_PORT_V5UA_DRAFT, v5ua_handle);
1641 dissector_add_uint("sctp.port", SCTP_PORT_V5UA_RFC, v5ua_handle);
1642 dissector_add_uint("sctp.ppi", V5UA_PAYLOAD_PROTOCOL_ID, v5ua_handle);
1643 }
1644
1645 /*
1646 * Editor modelines - https://www.wireshark.org/tools/modelines.html
1647 *
1648 * Local variables:
1649 * c-basic-offset: 4
1650 * tab-width: 8
1651 * indent-tabs-mode: nil
1652 * End:
1653 *
1654 * vi: set shiftwidth=4 tabstop=8 expandtab:
1655 * :indentSize=4:tabSize=8:noTabs=true:
1656 */
1657