epan/dissectors/packet-gsm_bssmap_le.c

   1 /* packet-gsm_bssmap_le.c
   2  * Routines for GSM Lb Interface BSSMAP dissection
   3  *
   4  * Copyright 2008, Johnny Mitrevski <mitrevj@hotmail.com>
   5  *
   6  * 3GPP TS 49.031 version v7.4.0 (2009-09)
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 #include "config.h"
  28
  29 #include <glib.h>
  30
  31 #include <epan/packet.h>
  32 #include <epan/tap.h>
  33 #include <epan/wmem/wmem.h>
  34
  35 #include "packet-bssap.h"
  36 #include "packet-sccp.h"
  37 #include "packet-gsm_a_common.h"
  38 #include "packet-e212.h"
  39
  40 void proto_register_gsm_bssmap_le(void);
  41 void proto_reg_handoff_gsm_bssmap_le(void);
  42
  43 /* PROTOTYPES/FORWARDS */
  44
  45 /* Message Type definitions */
  46 #define BSSMAP_LE_PERFORM_LOCATION_REQUEST              43
  47 #define BSSMAP_LE_PERFORM_LOCATION_RESPONSE             45
  48 #define BSSMAP_LE_PERFORM_LOCATION_ABORT                46
  49 #define BSSMAP_LE_PERFORM_LOCATION_INFORMATION          47
  50 #define BSSMAP_LE_CONNECTION_ORIENTED_INFORMATION       42
  51 #define BSSMAP_LE_CONNECTIONLESS_INFORMATION            58
  52 #define BSSMAP_LE_RESET                                 48
  53 #define BSSMAP_LE_RESET_ACKNOWLEDGE                     49
  54
  55 static const value_string gsm_bssmap_le_msg_strings[] = {
  56         { 0, "Reserved" },
  57         { 1, "Reserved" },
  58         { 2, "Reserved" },
  59         { 3, "Reserved" },
  60         { 4, "Reserved" },
  61         { BSSMAP_LE_PERFORM_LOCATION_REQUEST, "Perform Location Request" },
  62         { BSSMAP_LE_PERFORM_LOCATION_RESPONSE, "Perform Location Response" },
  63         { BSSMAP_LE_PERFORM_LOCATION_ABORT, "Perform Location Abort" },
  64         { BSSMAP_LE_PERFORM_LOCATION_INFORMATION, "Perform Location Information" },
  65         { BSSMAP_LE_CONNECTION_ORIENTED_INFORMATION, "Connection Oriented Information" },
  66         { BSSMAP_LE_CONNECTIONLESS_INFORMATION, "Connectionless Information" },
  67         { BSSMAP_LE_RESET, "Reset" },
  68         { BSSMAP_LE_RESET_ACKNOWLEDGE, "Reset Acknowledge" },
  69         { 0, NULL }    /*Null terminated list. Make sure we add this to our value/string structures. */
  70 };
  71
  72 /* Information Element definitions */
  73 #define BSSMAP_LE_LCS_QOS                                    62
  74 #define BSSMAP_LE_LCS_PRIORITY                               67
  75 #define BSSMAP_LE_LOCATION_TYPE                              68
  76 #define BSSMAP_LE_GANSS_LOCATION_TYPE                        130
  77 #define BSSMAP_LE_GEOGRAPHIC_LOCATION                        69
  78 #define BSSMAP_LE_POSITIONING_DATA                           70
  79 #define BSSMAP_LE_GANSS_POSITIONING_DATA                     131
  80 #define BSSMAP_LE_VELOCITY_DATA                              85
  81 #define BSSMAP_LE_LCS_CAUSE                                  71
  82 #define BSSMAP_LE_LCS_CLIENT_TYPE                            72
  83 #define BSSMAP_LE_APDU                                       73
  84 #define BSSMAP_LE_NETWORK_ELEMENT_IDENTITY                   74
  85 #define BSSMAP_LE_REQUESTED_GPS_ASSISTANCE_DATA              75
  86 #define BSSMAP_LE_REQUESTED_GANSS_ASSISTANCE_DATA            65
  87 #define BSSMAP_LE_DECIPHERING_KEYS                           76
  88 #define BSSMAP_LE_RETURN_ERROR_REQUEST                       77
  89 #define BSSMAP_LE_RETURN_ERROR_CAUSE                         78
  90 #define BSSMAP_LE_SEGMENTATION                               79
  91 #define BSSMAP_LE_CLASSMARK_INFORMATION_TYPE_3               19
  92 #define BSSMAP_LE_CAUSE                                      4
  93 #define BSSMAP_LE_CELL_IDENTIFIER                            5
  94 #define BSSMAP_LE_CHOSEN_CHANNEL                             33
  95 #define BSSMAP_LE_IMSI                                       0
  96 #define BSSMAP_LE_RESERVED_NOTE1                             1
  97 #define BSSMAP_LE_RESERVED_NOTE2                             2
  98 #define BSSMAP_LE_RESERVED_NOTE3                             3
  99 #define BSSMAP_LE_LCS_CAPABILITY                             80
 100 #define BSSMAP_LE_PACKET_MEASUREMENT_REPORT                  81
 101 #define BSSMAP_LE_CELL_IDENTITY_LIST                         82
 102 #define BSSMAP_LE_IMEI                                       128
 103
 104 static const value_string gsm_bssmap_le_elem_strings[] = {
 105         { DE_BMAPLE_LCSQOS, "LCS QoS" },
 106         { DE_BMAPLE_LCS_PRIO, "LCS Priority" },
 107         { DE_BMAPLE_LOC_TYPE, "Location Type" },
 108         { DE_BMAPLE_GANSS_LOC_TYPE, "GANSS Location Type" },
 109         { DE_BMAPLE_GEO_LOC, "Geographic Location" },
 110         { DE_BMAPLE_POS_DATA, "Positioning Data" },
 111         { DE_BMAPLE_GANSS_POS_DATA, "GANSS Positioning Data" },
 112         { DE_BMAPLE_VELOC_DATA, "Velocity Data" },
 113         { DE_BMAPLE_LCS_CAUSE, "LCS Cause" },
 114         { DE_BMAPLE_LCS_CLIENT_TYPE, "LCS Client Type" },
 115         { DE_BMAPLE_APDU, "APDU" },
 116         { DE_BMAPLE_NETWORK_ELEM_ID, "Network Element Identity" },
 117         { DE_BMAPLE_REQ_GPS_ASSIST_D, "Requested GPS Assistance Data" },
 118         { DE_BMAPLE_REQ_GNSS_ASSIST_D, "Requested GANSS Assistance Data" },
 119         { DE_BMAPLE_DECIPH_KEYS, "Deciphering Keys" },
 120         { DE_BMAPLE_RETURN_ERROR_REQ, "Return Error Request" },
 121         { DE_BMAPLE_RETURN_ERROR_CAUSE, "Return Error Cause" },
 122         { DE_BMAPLE_SEGMENTATION, "Segmentation" },
 123         { DE_BMAPLE_CLASSMARK_TYPE_3, "Classmark Information Type 3" },
 124         { DE_BMAPLE_CAUSE, "Cause" },
 125         { DE_BMAPLE_CELL_IDENTIFIER, "Cell Identifier" },
 126         { DE_BMAPLE_CHOSEN_CHANNEL, "Chosen Channel" },
 127         { DE_BMAPLE_IMSI, "IMSI" },
 128         { DE_BMAPLE_RES1, "Reserved" },
 129         { DE_BMAPLE_RES2, "Reserved" },
 130         { DE_BMAPLE_RES3, "Reserved" },
 131         { DE_BMAPLE_LCS_CAPABILITY, "LCS Capability" },
 132         { DE_BMAPLE_PACKET_MEAS_REP, "Packet Measurement Report" },
 133         { DE_BMAPLE_MEAS_CELL_ID, "Cell Identity List" },
 134         { DE_BMAPLE_IMEI, "IMEI" },
 135         { 0, NULL }
 136 };
 137 value_string_ext gsm_bssmap_le_elem_strings_ext = VALUE_STRING_EXT_INIT(gsm_bssmap_le_elem_strings);
 138
 139 static const value_string gsm_apdu_protocol_id_strings[] = {
 140         { 0,    "reserved" },
 141         { 1,    "BSSLAP" },
 142         { 2,    "LLP" },
 143         { 3,    "SMLCPP" },
 144         { 0, NULL },
 145 };
 146
 147 /* Velocity Requested definitions */
 148 static const value_string bssmap_le_velocity_requested_vals[] = {
 149         { 0, "do not report velocity" },
 150         { 1, "report velocity if available" },
 151         { 0, NULL}
 152 };
 153
 154 /* Vertical Coordinate definitions */
 155 static const value_string bssmap_le_vertical_coordinate_indicator_vals[] = {
 156         { 0, "vertical coordinate not requested" },
 157         { 1, "vertical coordinate is requested" },
 158         { 0, NULL}
 159 };
 160
 161 /* Horizontal Accuracy definitions */
 162 static const value_string bssmap_le_horizontal_accuracy_indicator_vals[] = {
 163         { 0, "horizontal accuracy is not specified" },
 164         { 1, "horizontal accuracy is specified" },
 165         { 0, NULL}
 166 };
 167
 168 /* Vertical Accuracy definitions */
 169 static const value_string bssmap_le_vertical_accuracy_indicator_vals[] = {
 170         { 0, "vertical accuracy is not specified" },
 171         { 1, "vertical accuracy is specified" },
 172         { 0, NULL}
 173 };
 174
 175 /* Response Time definitions */
 176 static const value_string bssmap_le_response_time_definitions_vals[] = {
 177         { 0, "Response Time is not specified" },
 178         { 1, "Low Delay" },
 179         { 2, "Delay Tolerant" },
 180         { 3, "reserved" },
 181         { 0, NULL}
 182 };
 183
 184 /* Initialize the protocol and registered fields */
 185 static int proto_bssmap_le = -1;
 186 int hf_gsm_bssmap_le_elem_id = -1;
 187
 188 /* The following hf_* variables are used to hold the Wireshark IDs of
 189 * our header fields; they are filled out when we call
 190 * proto_register_field_array() in proto_register_bssmap_le()
 191 */
 192 static int hf_gsm_bssmap_le_msg_type = -1;
 193 static int hf_gsm_bssmap_le_apdu_protocol_id = -1;
 194 static int hf_gsm_bssmap_le_spare = -1;
 195 static int hf_gsm_bssmap_le_ciphering_key_flag = -1;
 196 static int hf_gsm_bssmap_le_current_deciphering_key_value = -1;
 197 static int hf_gsm_bssmap_le_next_deciphering_key_value = -1;
 198 static int hf_gsm_bssmap_le_acq_ass = -1;
 199 static int hf_gsm_bssmap_le_ref_time = -1;
 200 static int hf_gsm_bssmap_le_ref_loc = -1;
 201 static int hf_gsm_bssmap_le_dgps_corr = -1;
 202 static int hf_gsm_bssmap_le_nav_mod = -1;
 203 static int hf_gsm_bssmap_le_iono_mod = -1;
 204 static int hf_gsm_bssmap_le_utc_mod = -1;
 205 static int hf_gsm_bssmap_le_almanac = -1;
 206 static int hf_gsm_bssmap_le_ephemeris_ext_chk = -1;
 207 static int hf_gsm_bssmap_le_ephemeris_ext = -1;
 208 static int hf_gsm_bssmap_le_real_time_int = -1;
 209 static int hf_gsm_bssmap_le_lcs_cause_value =-1;
 210 static int hf_gsm_bssmap_le_diagnostic_value = -1;
 211 static int hf_gsm_bssmap_le_client_category = -1;
 212 static int hf_gsm_bssmap_le_client_subtype = -1;
 213 static int hf_gsm_bssmap_le_velocity_requested = -1;
 214 static int hf_gsm_bssmap_le_vertical_coordinate_indicator = -1;
 215 static int hf_gsm_bssmap_le_horizontal_accuracy_indicator = -1;
 216 static int hf_gsm_bssmap_le_horizontal_accuracy = -1;
 217 static int hf_gsm_bssmap_le_vertical_accuracy_indicator = -1;
 218 static int hf_gsm_bssmap_le_vertical_accuracy = -1;
 219 static int hf_gsm_bssmap_le_response_time_category = -1;
 220
 221 /* Initialize the subtree pointers */
 222 static gint ett_bssmap_le_msg = -1;
 223
 224 static dissector_handle_t gsm_bsslap_handle = NULL;
 225
 226 static proto_tree *g_tree;
 227
 228 #define NUM_GSM_BSSMAP_LE_ELEM (sizeof(gsm_bssmap_le_elem_strings)/sizeof(value_string))
 229 gint ett_gsm_bssmap_le_elem[NUM_GSM_BSSMAP_LE_ELEM];
 230
 231 /*
 232  * 10.3 APDU
 233  */
 234
 235 static guint16
 236 de_bmaple_apdu(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, guint32 offset, guint len, gchar *add_string _U_, int string_len _U_)
 237 {
 238         guint32 curr_offset;
 239         guint8  apdu_protocol_id;
 240         tvbuff_t *APDU_tvb;
 241
 242         curr_offset = offset;
 243
 244         /* curr_offset + 1 is a hack, the length part here is 2 octets and we are off by one */
 245         proto_tree_add_text(tree, tvb, curr_offset+1, len, "APDU");
 246
 247         /*
 248          * dissect the embedded APDU message
 249          * if someone writes a TS 09.31 dissector
 250          *
 251          * The APDU octets 4 to n are coded in the same way as the
 252          * equivalent octet in the APDU element of 3GPP TS 49.031 BSSAP-LE.
 253          */
 254
 255         apdu_protocol_id = tvb_get_guint8(tvb,curr_offset+1);
 256         proto_tree_add_item(tree, hf_gsm_bssmap_le_apdu_protocol_id, tvb, curr_offset+1, 1, ENC_BIG_ENDIAN);
 257
 258         switch(apdu_protocol_id){
 259         case 1:
 260                 /* BSSLAP
 261                  * the embedded message is as defined in 3GPP TS 08.71(3GPP TS 48.071 version 7.2.0 Release 7)
 262                  */
 263                 APDU_tvb = tvb_new_subset(tvb, curr_offset+2, len-1, len-1);
 264                 if(gsm_bsslap_handle)
 265                         call_dissector(gsm_bsslap_handle, APDU_tvb, pinfo, g_tree);
 266                 break;
 267         case 2:
 268                 /* LLP
 269                  * The embedded message contains a Facility Information Element as defined in 3GPP TS 04.71
 270                  * excluding the Facility IEI and length of Facility IEI octets defined in 3GPP TS 04.71.(3GPP TS 44.071).
 271                  */
 272                 break;
 273         case 3:
 274                 /* SMLCPP
 275                  * The embedded message is as defined in 3GPP TS 08.31(TS 48.031).
 276                  */
 277                 break;
 278         default:
 279                 break;
 280         }
 281
 282         curr_offset += len;
 283
 284         EXTRANEOUS_DATA_CHECK(len, curr_offset - offset);
 285
 286         return(curr_offset - offset);
 287 }
 288 /*
 289  * 10.4 Cause
 290  * coded as the value part of the Cause IE defined in 3GPP TS 48.008
 291  */
 292 /*
 293  * 10.5 Cell Identifier
 294  * coded as the value part of the Cell Identifier IE defined in 3GPP TS 48.008
 295  */
 296 /*
 297  * 10.6 Chosen Channel
 298  * coded as the value part of the Chosen Channel IE defined in 3GPP TS 48.008
 299  */
 300 /*
 301  * 10.7 Classmark Information Type 3
 302  * coded as the value part of the Classmark Information Type 3 IE defined in 3GPP TS 48.008
 303  */
 304 /*
 305  * 10.8 Deciphering Keys
 306  */
 307 static guint16
 308 de_bmaple_decihp_keys(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len, gchar *add_string _U_, int string_len _U_)
 309 {
 310         gint bit_offset;
 311
 312         /* Spare bits */
 313         bit_offset = (offset<<3);
 314         proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_spare, tvb, bit_offset, 7, ENC_BIG_ENDIAN);
 315         bit_offset += 7;
 316
 317         /* Extract the Ciphering Key Flag and add to protocol tree */
 318         proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_ciphering_key_flag, tvb, bit_offset, 1, ENC_BIG_ENDIAN);
 319         bit_offset++;
 320         /*offset++;*/
 321
 322         /* Extract the Current Deciphering Key Value and add to protocol tree */
 323         proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_current_deciphering_key_value, tvb, bit_offset, 56, ENC_NA);
 324         bit_offset += 56;
 325         /*offset += 7;*/
 326
 327         /* Extract the Next Deciphering Key Value and add to protocol tree */
 328         proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_next_deciphering_key_value, tvb, bit_offset, 56, ENC_NA);
 329         /*offset += 7;*/
 330
 331         return(len);
 332 }
 333 /*
 334  * 10.9 Geographic Location
 335  * contains an octet sequence identical to that for Geographical Information
 336  * defined in 3GPP TS 23.032..
 337  */
 338 /*
 339  * 10.10 Requested GPS Assistance Data
 340  */
 341 static guint16
 342 de_bmaple_req_gps_ass_data(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len, gchar *add_string _U_, int string_len _U_)
 343 {
 344         guint32 curr_offset;
 345
 346         curr_offset = offset;
 347
 348         /* Octet 3 H G F E D C B A */
 349         /* bit H Acquisition Assistance */
 350         proto_tree_add_item(tree, hf_gsm_bssmap_le_acq_ass, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 351         /* bit G Reference Time */
 352         proto_tree_add_item(tree, hf_gsm_bssmap_le_ref_time, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 353         /* bit F Reference Location */
 354         proto_tree_add_item(tree, hf_gsm_bssmap_le_ref_loc, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 355         /* bit E DGPS Corrections */
 356         proto_tree_add_item(tree, hf_gsm_bssmap_le_dgps_corr, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 357         /* bit D Navigation Model */
 358         proto_tree_add_item(tree, hf_gsm_bssmap_le_nav_mod, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 359         /* bit C Ionospheric Model */
 360         proto_tree_add_item(tree, hf_gsm_bssmap_le_iono_mod, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 361         /* bit B UTC Model */
 362         proto_tree_add_item(tree, hf_gsm_bssmap_le_utc_mod, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 363         /* bit A Almanac */
 364         proto_tree_add_item(tree, hf_gsm_bssmap_le_almanac, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 365         curr_offset++;
 366
 367         /* Octet 4 P O N M L K J I
 368          * bits L through P are Spare bits
 369          */
 370         /* bit K Ephemeris Extension Check */
 371         proto_tree_add_item(tree, hf_gsm_bssmap_le_ephemeris_ext_chk, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 372         /* bit J Ephemeris Extension */
 373         proto_tree_add_item(tree, hf_gsm_bssmap_le_ephemeris_ext, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 374         /* bit I Real-Time Integrity */
 375         proto_tree_add_item(tree, hf_gsm_bssmap_le_real_time_int, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 376         curr_offset++;
 377
 378         /* Octet 5 to Octet 8+2n Satellite related data */
 379         proto_tree_add_text(tree, tvb, curr_offset, len-2, "Satellite related data Not decoded yet");
 380         return(len);
 381 }
 382 /*
 383  * 10.11 IMSI
 384  * coded as the value part of the Mobile Identity IE defined in 3GPP TS 24.008 (NOTE 1)
 385  * NOTE 1: The Type of identity field in the Mobile Identity IE shall
 386  * be ignored by the receiver
 387  */
 388 /*
 389  * 10.12 (void)
 390  */
 391 /*
 392  * 10.13 LCS Cause
 393  */
 394 static const value_string bssmap_le_lcs_cause_values[] = {
 395         { 0, "Unspecified" },
 396         { 1, "System Failure" },
 397         { 2, "Protocol Error" },
 398         { 3, "Data missing in position request" },
 399         { 4, "Unexpected data value in position request" },
 400         { 5, "Position method failure" },
 401         { 6, "Target MS Unreachable" },
 402         { 7, "Location request aborted" },
 403         { 8, "Facility not supported" },
 404         { 9, "Inter-BSC Handover Ongoing" },
 405         { 10, "Intra-BSC Handover Complete" },
 406         { 11, "Congestion" },
 407         { 12, "Inter NSE cell change" },
 408         { 13, "Routing Area Update" },
 409         { 14, "PTMSI reallocation" },
 410         { 15, "Suspension of GPRS services" },
 411         { 0, NULL}
 412 };
 413
 414 static const value_string bssmap_le_position_method_failure_diagnostic_vals[] = {
 415         { 0, "Congestion" },
 416         { 1, "insufficientResources" },
 417         { 2, "insufficientMeasurementData" },
 418         { 3, "inconsistentMeasurementData" },
 419         { 4, "locationProcedureNotCompleted" },
 420         { 5, "locationProcedureNotSupportedByTargetMS" },
 421         { 6, "qoSNotAttainable" },
 422         { 7, "positionMethodNotAvailableInNetwork" },
 423         { 8, "positionMethodNotAvailableInLocaitonArea" },
 424         { 0, NULL}
 425 };
 426 static guint16
 427 de_bmaple_cause(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len, gchar *add_string _U_, int string_len _U_)
 428 {
 429         guint32 curr_offset;
 430
 431         curr_offset = offset;
 432
 433         /* cause value  */
 434         proto_tree_add_item(tree, hf_gsm_bssmap_le_lcs_cause_value, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 435         curr_offset++;
 436
 437         if (len == 2)
 438         {
 439                 /* Diagnostic value (note) */
 440                 proto_tree_add_item(tree, hf_gsm_bssmap_le_diagnostic_value, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
 441                 curr_offset++;
 442         }
 443
 444         return(curr_offset - offset);
 445 }
 446 /*
 447  * 10.14 LCS Client Type
 448  */
 449 /* Client Category definitions */
 450 static const value_string bssmap_le_client_category[] = {
 451         { 0, "Value Added Client" },
 452         { 2, "PLMN Operator" },
 453         { 3, "Emergency Services"},
 454         { 4, "Lawful Intercept Services"},
 455         { 0, NULL}
 456 };
 457
 458 /* Client Subtype definitions */
 459 static const value_string bssmap_le_client_subtype[] = {
 460         { 0, "unspecified" },
 461         { 1, "broadcast service" },
 462         { 2, "O&M" },
 463         { 3, "anonymous statistics" },
 464         { 4, "Target MS service support" },
 465         { 0, NULL}
 466 };
 467
 468 static guint16
 469 de_bmaple_client(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
 470 {
 471         guint32 curr_offset;
 472         guint8 bitCount;
 473
 474         bitCount = offset<<3;
 475         curr_offset = offset;
 476
 477         /* Extract the client category and add to protocol tree */
 478         proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_client_category, tvb, bitCount, 4, ENC_BIG_ENDIAN);
 479         bitCount = bitCount + 4;
 480
 481         /* Extract the client subtype and add to protocol tree */
 482         proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_client_subtype, tvb, bitCount, 4, ENC_BIG_ENDIAN);
 483         /*bitCount = bitCount + 4;*/
 484         curr_offset++;
 485
 486         return(curr_offset - offset);
 487 }
 488 /*
 489  * 10.15 LCS Priority
 490  * coded as the LCS-Priority octet in 3GPP TS 29.002
 491  */
 492 /*
 493  * 10.16 LCS QoS
 494  */
 495 static guint16
 496 de_bmaple_lcs_qos(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len, gchar *add_string _U_, int string_len _U_)
 497 {
 498         guint64 verticalCoordIndicator, velocityRequested, horizontalAccuracyIndicator, verticalAccuracyIndicator;
 499         guint16 bitCount;
 500
 501         bitCount = offset << 3;
 502
 503         proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_spare, tvb, bitCount, 6, ENC_BIG_ENDIAN);
 504         bitCount = bitCount + 6;
 505
 506         /* Extract Velocity requested element */
 507         proto_tree_add_bits_ret_val(tree, hf_gsm_bssmap_le_velocity_requested, tvb, bitCount, 1, &velocityRequested, ENC_BIG_ENDIAN);
 508         bitCount++;
 509
 510         /* Extract vertical coordinator element */
 511         proto_tree_add_bits_ret_val(tree, hf_gsm_bssmap_le_vertical_coordinate_indicator, tvb, bitCount, 1, &verticalCoordIndicator, ENC_BIG_ENDIAN);
 512         bitCount++;
 513
 514         /* Extract horizontal accuracy element */
 515         proto_tree_add_bits_ret_val(tree, hf_gsm_bssmap_le_horizontal_accuracy_indicator, tvb, bitCount, 1, &horizontalAccuracyIndicator, ENC_BIG_ENDIAN);
 516         bitCount++;
 517
 518         if(horizontalAccuracyIndicator == 1)
 519         {
 520                 proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_horizontal_accuracy, tvb, bitCount, 7, ENC_BIG_ENDIAN);
 521                 bitCount = bitCount + 7;
 522         }
 523         else
 524         {
 525                 proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_spare, tvb, bitCount, 7, ENC_BIG_ENDIAN);
 526                 bitCount = bitCount + 7;
 527         }
 528
 529         /* Extract vertical accuracy element */
 530         proto_tree_add_bits_ret_val(tree, hf_gsm_bssmap_le_vertical_accuracy_indicator, tvb, bitCount, 1, &verticalAccuracyIndicator, ENC_BIG_ENDIAN);
 531         bitCount++;
 532
 533         if(verticalAccuracyIndicator == 1)
 534         {
 535                 proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_vertical_accuracy, tvb, bitCount, 7, ENC_BIG_ENDIAN);
 536                 bitCount = bitCount + 7;
 537         }
 538         else
 539         {
 540                 proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_spare, tvb, bitCount, 7, ENC_BIG_ENDIAN);
 541                 bitCount = bitCount + 7;
 542         }
 543
 544         proto_tree_add_bits_item(tree, hf_gsm_bssmap_le_response_time_category, tvb, bitCount, 2, ENC_BIG_ENDIAN);
 545         /*bitCount = bitCount + 2;*/
 546
 547         return(len);
 548 }
 549 /*
 550  * 10.17 (void)
 551  */
 552 /*
 553  * 10.18 Location Type
 554  */
 555 /*
 556  * 10.19 Network Element Identity
 557  */
 558 /*
 559  * 10.20 Positioning Data
 560  */
 561 static guint16
 562 de_bmaple_pos_dta(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, guint32 offset, guint len, gchar *add_string _U_, int string_len _U_)
 563 {
 564         tvbuff_t *data_tvb;
 565         guint32 curr_offset;
 566
 567         curr_offset = offset;
 568
 569         data_tvb = tvb_new_subset(tvb, curr_offset, len, len);
 570         dissect_geographical_description(data_tvb, pinfo, tree);
 571
 572         return(len);
 573 }
 574 /*
 575  * 10.21 Return Error Request
 576  */
 577 /*
 578  * 10.22 Return Error Cause
 579  */
 580 /*
 581  * 10.23 (void)
 582  */
 583 /*
 584  * 10.24 Segmentation
 585  */
 586 /*
 587  * 10.25 (void)
 588  */
 589 /*
 590  * 10.26 LCS Capability
 591  * coded as the value part of the LCS Capability
 592  * information element in 3GPP TS 48.018, not including
 593  * 3GPP TS 48.018 IEI and length indicator
 594  */
 595 /* Dissector for the LCS Capability element */
 596 static guint16
 597 be_lcs_capability(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len, gchar *add_string _U_, int string_len _U_)
 598 {
 599         /* Extract the LCS Capability element and add to protocol tree */
 600         proto_tree_add_text(tree, tvb, offset, len, "Not decoded yet");
 601         return len;
 602 }
 603
 604 /*
 605  * 10.27 Packet Measurement Report
 606  * coded as the Packet Measurement Report
 607  * message or the Packet Enhanced Measurement Report message
 608  * starting with the 6-bit MESSAGE_TYPE (see clause 11 in
 609  * 3GPP TS 44.060) and ending with the Non-distribution contents
 610  * (i.e. the RLC/MAC padding bits are not included). The end of the
 611  * message is padded with 0-bits to the nearest octet boundary.
 612  */
 613 /* Dissector for the Packet Measurement Report element */
 614 static guint16
 615 be_packet_meas_rep(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len, gchar *add_string _U_, int string_len _U_)
 616 {
 617         /* Extract the Packet Measurement Report element and add to protocol tree */
 618         proto_tree_add_text(tree, tvb, offset, len, "Not decoded yet");
 619
 620         return len;
 621 }
 622
 623 /*
 624  * 10.28 Cell Identity List
 625  * coded as the value part of the Cell Identity List IE
 626  * defined in 3GPP TS 48.071.
 627  */
 628 /* Dissector for the Measured Cell Identity List element */
 629 static guint16
 630 be_measured_cell_identity(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len, gchar *add_string _U_, int string_len _U_)
 631 {
 632         /* Extract the Measured Cell Identity List element and add to protocol tree */
 633         proto_tree_add_text(tree, tvb, offset, len, "Not decoded yet");
 634
 635         return len;
 636 }
 637
 638 /*
 639  * 10.29 IMEI
 640  * IMEI coded as the value part of the Mobile Identity IE defined in
 641  * 3GPP TS 24.008 (NOTE 1)
 642  * NOTE 1: The Type of identity field in the Mobile Identity IE shall
 643  * be ignored by the receiver.
 644  */
 645 /*
 646  * 10.30 Velocity Data
 647  * contains an octet sequence identical to that for Description of
 648  * Velocity defined in 3GPP TS 23.032.
 649  */
 650 /*
 651  * 10.31 Requested GANSS Assistance Data
 652  */
 653 /*
 654  * 10.32 GANSS Positioning Data
 655  */
 656 /*
 657  * 10.33 GANSS Location Type
 658  */
 659
 660
 661 #define NUM_GSM_BSSMAP_LE_MSG (sizeof(gsm_bssmap_le_msg_strings)/sizeof(value_string))
 662 static gint ett_gsm_bssmap_le_msg[NUM_GSM_BSSMAP_LE_MSG];
 663
 664 /*
 665 This enum is defined in packet-gsm_a_common.h to
 666 make it possible to use element dissecton from this dissector
 667 in other dissectors.
 668
 669 It is shown here as a comment for easier reference.
 670
 671 Note this enum must be of the same size as the element decoding list below
 672
 673 typedef enum
 674 {
 675         DE_BMAPLE_LCSQOS,                       / 10.16 LCS QoS /
 676         DE_BMAPLE_LCS_PRIO,                     / LCS Priority /
 677         DE_BMAPLE_LOC_TYPE,                     / 10.18 Location Type /
 678         DE_BMAPLE_GANSS_LOC_TYPE,       / GANSS Location Type /
 679         DE_BMAPLE_GEO_LOC,                      / 10.9 Geographic Location /
 680         DE_BMAPLE_POS_DATA,                     / 10.20 Positioning Data /
 681         DE_BMAPLE_GANSS_POS_DATA,       / GANSS Positioning Data /
 682         DE_BMAPLE_VELOC_DATA,           / Velocity Data /
 683         DE_BMAPLE_LCS_CAUSE,            / 10.13 LCS Cause /
 684         DE_BMAPLE_LCS_CLIENT_TYPE,      / LCS Client Type /
 685         DE_BMAPLE_APDU,                         / 10.3 APDU /
 686         DE_BMAPLE_NETWORK_ELEM_ID,      / Network Element Identity /
 687         DE_BMAPLE_REQ_GPS_ASSIST_D, / 10.10 Requested GPS Assistance Data /
 688         DE_BMAPLE_REQ_GNSS_ASSIST_D,/ Requested GANSS Assistance Data /
 689         DE_BMAPLE_DECIPH_KEYS,          / 10.8 Deciphering Keys /
 690         DE_BMAPLE_RETURN_ERROR_REQ,     / Return Error Request /
 691         DE_BMAPLE_RETURN_ERROR_CAUSE,   / Return Error Cause /
 692         DE_BMAPLE_SEGMENTATION,         / Segmentation /
 693         DE_BMAPLE_CLASSMARK_TYPE_3,     / 10.7 Classmark Information Type 3 /
 694         DE_BMAPLE_CAUSE,                        / 10.4 Cause /
 695         DE_BMAPLE_CELL_IDENTIFIER,      / 10.5 Cell Identifier /
 696         DE_BMAPLE_CHOSEN_CHANNEL,       / 10.6 Chosen Channel /
 697         DE_BMAPLE_IMSI,                         / 10.11 IMSI /
 698         DE_BMAPLE_RES1,                         / Reserved /
 699         DE_BMAPLE_RES2,                         / Reserved /
 700         DE_BMAPLE_RES3,                         / Reserved /
 701         DE_BMAPLE_LCS_CAPABILITY,       / LCS Capability /
 702         DE_BMAPLE_PACKET_MEAS_REP,      / Packet Measurement Report /
 703         DE_BMAPLE_MEAS_CELL_ID,         / Measured Cell Identity /
 704         DE_BMAPLE_IMEI,                         / IMEI /
 705         BMAPLE_NONE                                     / NONE /
 706 }
 707 bssmap_le_elem_idx_t;
 708 */
 709
 710
 711 guint16 (*bssmap_le_elem_fcn[])(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len, gchar *add_string, int string_len) = {
 712         /* NOTE: The null types below are defined elsewhere. i.e in packet-gsm_a_bssmap.c */
 713         de_bmaple_lcs_qos,                              /* 10.16 LCS QoS */
 714         NULL,                                                   /* LCS Priority */
 715         NULL,                                                   /* 10.18 Location Type */
 716         be_ganss_loc_type,                              /* GANSS Location Type */
 717         NULL,                                                   /* 10.9 Geographic Location */
 718         de_bmaple_pos_dta,                              /* 10.20 Positioning Data */
 719         be_ganss_pos_dta,                               /* GANSS Positioning Data */
 720         NULL,                                                   /* Velocity Data */
 721         de_bmaple_cause,                                /* 10.13 LCS Cause */
 722         de_bmaple_client,                               /* LCS Client Type */
 723         de_bmaple_apdu,                                 /* APDU */
 724         NULL,                                                   /* Network Element Identity */
 725         de_bmaple_req_gps_ass_data,             /* 10.10 Requested GPS Assistance Data */
 726         be_ganss_ass_dta,                               /* Requested GANSS Assistance Data */
 727         de_bmaple_decihp_keys,                  /* 10.8 Deciphering Keys */
 728         NULL,                                                   /* Return Error Request */
 729         NULL,                                                   /* Return Error Cause */
 730         NULL,                                                   /* Segmentation */
 731         NULL,                                                   /* 10.7 Classmark Information Type 3 */
 732         NULL,                                                   /* Cause */
 733         NULL,                                                   /* Cell Identifier */
 734         NULL,                                                   /* 10.6 Chosen Channel */
 735         de_mid,                                                 /* 10.11 IMSI */
 736         NULL,                                                   /* Reserved */
 737         NULL,                                                   /* Reserved */
 738         NULL,                                                   /* Reserved */
 739         be_lcs_capability,                              /* LCS Capability */
 740         be_packet_meas_rep,                             /* Packet Measurement Report */
 741         be_measured_cell_identity,              /* Measured Cell Identity List */
 742         de_mid,                                                 /* IMEI (use same dissector as IMSI) */
 743
 744         NULL,   /* NONE */
 745
 746 };
 747
 748 /*
 749  * 9.1 PERFORM LOCATION REQUEST
 750  */
 751 static void
 752 bssmap_le_perf_loc_request(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len)
 753 {
 754         guint32 curr_offset;
 755         guint32 consumed;
 756         guint   curr_len;
 757
 758         curr_offset = offset;
 759         curr_len = len;
 760
 761         /* Location Type 9.1.1 M 3-n */
 762         ELEM_MAND_TLV(BSSMAP_LE_LOCATION_TYPE, GSM_A_PDU_TYPE_BSSMAP, BE_LOC_TYPE, NULL)
 763         /* Cell Identifier 9.1.2 O 5-10 */
 764         ELEM_MAND_TLV(BSSMAP_LE_CELL_IDENTIFIER, GSM_A_PDU_TYPE_BSSMAP, BE_CELL_ID, NULL);
 765         /* Classmark Information Type 3 9.1.3 O 3-14 */
 766         ELEM_OPT_TLV(BSSMAP_LE_CLASSMARK_INFORMATION_TYPE_3, GSM_A_PDU_TYPE_BSSMAP, BE_CM_INFO_3, NULL);
 767         /* LCS Client Type 9.1.4 C (note 3) 3-n */
 768         ELEM_OPT_TLV(BSSMAP_LE_LCS_CLIENT_TYPE, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_LCS_CLIENT_TYPE, NULL);
 769         /* Chosen Channel 9.1.5 O 2 */
 770         ELEM_OPT_TV(BSSMAP_LE_CHOSEN_CHANNEL, GSM_A_PDU_TYPE_BSSMAP, BE_CHOSEN_CHAN, NULL);
 771         /* LCS Priority 9.1.6 O 3-n */
 772         ELEM_OPT_TLV(BSSMAP_LE_LCS_PRIORITY, GSM_A_PDU_TYPE_BSSMAP, BE_LCS_PRIO, NULL);
 773         /* LCS QoS 9.1.6a C (note 1) 3-n */
 774         ELEM_OPT_TLV(BSSMAP_LE_LCS_QOS, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_LCSQOS, NULL);
 775         /* GPS Assistance Data 9.1.7 C (note 2) 3-n */
 776         ELEM_OPT_TLV(BSSMAP_LE_REQUESTED_GPS_ASSISTANCE_DATA, GSM_A_PDU_TYPE_BSSMAP, BE_GPS_ASSIST_DATA, NULL);
 777         /* APDU 9.1.8 O 3-n */
 778         ELEM_OPT_TLV(BSSMAP_LE_APDU, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_APDU, NULL);
 779         /* LCS Capability 9.1.9 O */
 780         ELEM_OPT_TLV(BSSMAP_LE_LCS_CAPABILITY, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_LCS_CAPABILITY, NULL);
 781         /* Packet Measurement Report 9.1.10 O*/
 782         ELEM_OPT_TLV(BSSMAP_LE_PACKET_MEASUREMENT_REPORT, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_PACKET_MEAS_REP, NULL);
 783         /* Measured Cell Identity List 9.1.11 O*/
 784         ELEM_OPT_TLV(BSSMAP_LE_CELL_IDENTITY_LIST, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_MEAS_CELL_ID, NULL);
 785         /* IMSI 9.1.12  O (note 4)      5-10 */
 786         ELEM_OPT_TLV(BSSMAP_LE_IMSI, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_IMSI, NULL);
 787         /* IMEI 9.1.13  O (note 4)      10 (use same decode as IMSI) */
 788         ELEM_OPT_TLV(BSSMAP_LE_IMEI, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_IMEI, NULL);
 789         /* GANSS Location Type  9.1.14  C       3 */
 790         ELEM_OPT_TLV(BSSMAP_LE_GANSS_LOCATION_TYPE, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_GANSS_LOC_TYPE, NULL);
 791         /* GANSS Assistance Data        9.1.15  C (note 5)      3-n */
 792         ELEM_OPT_TLV(BSSMAP_LE_REQUESTED_GANSS_ASSISTANCE_DATA, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_REQ_GNSS_ASSIST_D, NULL);
 793
 794         EXTRANEOUS_DATA_CHECK(curr_len, 0);
 795
 796 }
 797
 798 /*
 799  * 9.2 PERFORM LOCATION RESPONSE
 800  */
 801 static void
 802 bssmap_le_perf_loc_resp(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len)
 803 {
 804         guint32 curr_offset;
 805         guint32 consumed;
 806         guint   curr_len;
 807
 808         curr_offset = offset;
 809         curr_len = len;
 810
 811         /* Location Estimate 9.2.1 C (note 1) 3-n */
 812         ELEM_OPT_TLV(BSSMAP_LE_GEOGRAPHIC_LOCATION, BSSAP_PDU_TYPE_BSSMAP, BE_LOC_EST, NULL);
 813         /* Positioning Data 9.2.2 O 3-n */
 814         ELEM_OPT_TLV(BSSMAP_LE_POSITIONING_DATA, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_POS_DATA, NULL);
 815         /* Deciphering Keys 9.2.3 C (note 2) 3-n */
 816         ELEM_OPT_TLV(BSSMAP_LE_DECIPHERING_KEYS, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_DECIPH_KEYS, NULL);
 817         /* LCS Cause 9.2.4 C (note 3) 3-n */
 818         ELEM_OPT_TLV(BSSMAP_LE_LCS_CAUSE, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_LCS_CAUSE, NULL);
 819         /* Velocity Estimate    9.2.5   O       3-n */
 820         ELEM_OPT_TLV(BSSMAP_LE_VELOCITY_DATA, BSSAP_PDU_TYPE_BSSMAP, BE_VEL_EST, NULL);
 821         /* GANSS Positioning Data       9.2.6   O       3-n */
 822         ELEM_OPT_TLV(BSSMAP_LE_GANSS_POSITIONING_DATA, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_GANSS_POS_DATA, NULL);
 823
 824         EXTRANEOUS_DATA_CHECK(curr_len, 0);
 825 }
 826
 827 /*
 828  * 9.8 CONNECTION ORIENTED INFORMATION
 829  */
 830 static void
 831 bssmap_le_connection_oriented(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len)
 832 {
 833         guint32 curr_offset;
 834         guint32 consumed;
 835         guint   curr_len;
 836
 837         curr_offset = offset;
 838         curr_len = len;
 839
 840         /* APDU 9.8.1 M 3-n */
 841         ELEM_MAND_TLV(BSSMAP_LE_APDU, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_APDU, NULL);
 842         /* Segmentation 9.8.2 */
 843         ELEM_OPT_TLV(BSSMAP_LE_SEGMENTATION, BSSAP_PDU_TYPE_BSSMAP, BE_SEG, NULL);
 844
 845         EXTRANEOUS_DATA_CHECK(curr_len, 0);
 846 }
 847
 848 /*
 849  * 9.9  CONNECTIONLESS INFORMATION
 850  *
 851 Network Element Identity (source)       3.2.2.69        Both    M       3-n
 852 Network Element Identity (target)       3.2.2.69        Both    M       3-n
 853 APDU    3.2.2.68        Both    M       3-n
 854 Segmentation    3.2,2,74        Both    C (note 1)      5
 855 Return Error Request    3.2.2.72        Both    C (note 2)      3-n
 856 Return Error Cause      3.2.2.73        Both    C (note 3)      3-n
 857 */
 858
 859 /*
 860  * 9.11 RESET ACKNOWLEDGE
 861  * no data
 862  */
 863
 864 /*
 865  * 9.12 PERFORM LOCATION INFORMATION
 866  */
 867 static void
 868 bssmap_le_perf_loc_info(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len)
 869 {
 870         guint32 curr_offset;
 871         guint32 consumed;
 872         guint   curr_len;
 873
 874         curr_offset = offset;
 875         curr_len = len;
 876
 877         /* Cell Identifier 9.12.1 M */
 878         ELEM_MAND_TLV(BSSMAP_LE_CELL_IDENTIFIER, GSM_A_PDU_TYPE_BSSMAP, BE_CELL_ID, NULL);
 879         /* APDU 9.1.8 O 3-n */
 880         ELEM_OPT_TLV(BSSMAP_LE_APDU, GSM_PDU_TYPE_BSSMAP_LE, DE_BMAPLE_APDU, NULL);
 881
 882         EXTRANEOUS_DATA_CHECK(curr_len, 0);
 883 }
 884
 885 static void (*bssmap_le_msg_fcn[])(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len) = {
 886         NULL,
 887         NULL,
 888         NULL,
 889         NULL,
 890         NULL,
 891         bssmap_le_perf_loc_request,     /* Perform Location Request */
 892         bssmap_le_perf_loc_resp,        /* Perform Location Response */
 893         bssmap_perf_loc_abort,          /* Abort */
 894         bssmap_le_perf_loc_info,        /* Perform Location Information */
 895         bssmap_le_connection_oriented,  /* Connection Oriented Information */
 896         NULL,                                           /* Connectionless Information */
 897         bssmap_reset,                           /* Reset */
 898         NULL,           /* Reset Acknowledge */
 899
 900         NULL,   /* NONE */
 901 };
 902
 903 void
 904 dissect_bssmap_le(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 905 {
 906         static gsm_a_tap_rec_t  tap_rec[4];
 907         static gsm_a_tap_rec_t  *tap_p;
 908         static guint                    tap_current=0;
 909         guint8  oct;
 910         guint32 offset, saved_offset;
 911         guint32 len;
 912         gint    idx;
 913         proto_item      *bssmap_le_item = NULL;
 914         proto_tree      *bssmap_le_tree = NULL;
 915         const gchar     *str;
 916         sccp_msg_info_t* sccp_msg_p;
 917
 918         sccp_msg_p = pinfo->sccp_info;
 919
 920         if (!(sccp_msg_p && sccp_msg_p->data.co.assoc)) {
 921                 sccp_msg_p = NULL;
 922         }
 923
 924         col_append_str(pinfo->cinfo, COL_INFO, "(BSSMAP LE) ");
 925
 926         /*
 927          * set tap record pointer
 928          */
 929         tap_current++;
 930         if (tap_current >= 4)
 931         {
 932                 tap_current = 0;
 933         }
 934         tap_p = &tap_rec[tap_current];
 935
 936
 937         offset = 0;
 938         saved_offset = offset;
 939
 940         g_tree = tree;
 941
 942         len = tvb_length(tvb);
 943
 944         /*
 945          * add BSSMAP message name
 946          */
 947         oct = tvb_get_guint8(tvb, offset++);
 948
 949         str = try_val_to_str_idx((guint32) oct, gsm_bssmap_le_msg_strings, &idx);
 950
 951         if (sccp_msg_p && !sccp_msg_p->data.co.label) {
 952                 sccp_msg_p->data.co.label = wmem_strdup(wmem_file_scope(),
 953                                                                                                 val_to_str((guint32) oct,
 954                                                                                                 gsm_bssmap_le_msg_strings, "BSSMAP LE(0x%02x)"));
 955         }
 956
 957         /*
 958          * create the protocol tree
 959          */
 960         if (str == NULL)
 961         {
 962                 bssmap_le_item =
 963                 proto_tree_add_protocol_format(tree, proto_bssmap_le, tvb, 0, len,
 964                         "Lb - I/F BSSMAP LE - Unknown BSSMAP Message Type (0x%02x)",
 965                         oct);
 966
 967                 bssmap_le_tree = proto_item_add_subtree(bssmap_le_item, ett_bssmap_le_msg);
 968         }
 969         else
 970         {
 971                 bssmap_le_item =
 972                 proto_tree_add_protocol_format(tree, proto_bssmap_le, tvb, 0, -1,
 973                         "Lb - I/F BSSMAP LE - %s",
 974                         str);
 975
 976                 bssmap_le_tree = proto_item_add_subtree(bssmap_le_item, ett_gsm_bssmap_le_msg[idx]);
 977
 978                 col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", str);
 979
 980                 /*
 981                  * add BSSMAP message name
 982                  */
 983                 proto_tree_add_uint_format(bssmap_le_tree, hf_gsm_bssmap_le_msg_type,
 984                 tvb, saved_offset, 1, oct, "Message Type %s",str);
 985         }
 986
 987         tap_p->pdu_type = BSSAP_PDU_TYPE_BSSMAP;
 988         tap_p->message_type = oct;
 989
 990         tap_queue_packet(gsm_a_tap, pinfo, tap_p);
 991
 992         if (str == NULL) return;
 993
 994         if (offset >= len) return;
 995
 996         /*
 997          * decode elements
 998          */
 999         if (bssmap_le_msg_fcn[idx] == NULL)
1000         {
1001                 proto_tree_add_text(bssmap_le_tree,
1002                         tvb, offset, len - offset,
1003                         "Message Elements");
1004         }
1005         else
1006         {
1007                 (*bssmap_le_msg_fcn[idx])(tvb, bssmap_le_tree, pinfo, offset, len - offset);
1008         }
1009 }
1010
1011 /* Register the protocol with Wireshark */
1012 void
1013 proto_register_gsm_bssmap_le(void)
1014 {
1015         guint           i;
1016         guint           last_offset;
1017
1018         /* Setup list of header fields */
1019         static hf_register_info hf[] = {
1020                 { &hf_gsm_bssmap_le_msg_type,
1021                   { "BSSMAP LE Message Type",   "gsm_bssmap_le.msgtype",
1022                     FT_UINT8, BASE_HEX, VALS(gsm_bssmap_le_msg_strings), 0x0,
1023                     NULL, HFILL }
1024                 },
1025                 { &hf_gsm_bssmap_le_elem_id,
1026                   { "Element ID",       "gsm_bssmap_le.elem_id",
1027                     FT_UINT8, BASE_HEX, NULL, 0,
1028                     NULL, HFILL }
1029                 },
1030                 { &hf_gsm_bssmap_le_apdu_protocol_id,
1031                   { "Protocol ID", "gsm_bssmap_le.apdu_protocol_id",
1032                     FT_UINT8, BASE_DEC, VALS(gsm_apdu_protocol_id_strings), 0x0,
1033                     "APDU embedded protocol id", HFILL }
1034                 },
1035                 { &hf_gsm_bssmap_le_spare,
1036                   { "Spare", "gsm_bssmap_le.spare",
1037                     FT_UINT8, BASE_HEX, NULL, 0x0,
1038                     NULL, HFILL}
1039                 },
1040                 { &hf_gsm_bssmap_le_ciphering_key_flag,
1041                   { "Ciphering Key Flag", "gsm_bssmap_le.decipheringKeys.flag",
1042                     FT_UINT8, BASE_DEC, NULL, 0x0,
1043                     NULL, HFILL}
1044                 },
1045                 { &hf_gsm_bssmap_le_current_deciphering_key_value,
1046                   { "Current Deciphering Key Value", "gsm_bssmap_le.decipheringKeys.current",
1047                     FT_UINT64, BASE_HEX, NULL, 0x0, NULL,
1048                     HFILL}
1049                 },
1050                 { &hf_gsm_bssmap_le_next_deciphering_key_value,
1051                   { "Next Deciphering Key Value", "gsm_bssmap_le.decipheringKeys.next",
1052                     FT_UINT64, BASE_HEX, NULL, 0x0,
1053                     NULL, HFILL}
1054                 },
1055                 { &hf_gsm_bssmap_le_acq_ass,
1056           { "Acquisition Assistance", "gsm_bssmap_le.acq_ass",
1057             FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x80,
1058             NULL, HFILL }
1059                 },
1060                 { &hf_gsm_bssmap_le_ref_time,
1061           { "Reference Time", "gsm_bssmap_le.ref_time",
1062             FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x40,
1063             NULL, HFILL }
1064                 },
1065                 { &hf_gsm_bssmap_le_ref_loc,
1066           { "Reference Location", "gsm_bssmap_le.ref_loc",
1067             FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x20,
1068             NULL, HFILL }
1069                 },
1070                 { &hf_gsm_bssmap_le_dgps_corr,
1071           { "DGPS Corrections", "gsm_bssmap_le.gps_corr",
1072             FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x08,
1073             NULL, HFILL }
1074                 },
1075                 { &hf_gsm_bssmap_le_nav_mod,
1076           { "Navigation Model", "gsm_bssmap_le.nav_mod",
1077             FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x10,
1078             NULL, HFILL }
1079                 },
1080                 { &hf_gsm_bssmap_le_iono_mod,
1081           { "Ionospheric Model", "gsm_bssmap_le.iono_mod",
1082             FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x04,
1083             NULL, HFILL }
1084                 },
1085                 { &hf_gsm_bssmap_le_utc_mod,
1086           { "UTC Model", "gsm_bssmap_le.utc_mod",
1087             FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x02,
1088             NULL, HFILL }
1089                 },
1090                 { &hf_gsm_bssmap_le_almanac,
1091           { "Almanac", "gsm_bssmap_le.almanac",
1092             FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x01,
1093             NULL, HFILL }
1094                 },
1095                 { &hf_gsm_bssmap_le_ephemeris_ext_chk,
1096           { "Ephemeris Extension Check", "gsm_bssmap_le.ephemeris_ext_chk",
1097             FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x04,
1098             NULL, HFILL }
1099                 },
1100                 { &hf_gsm_bssmap_le_ephemeris_ext,
1101           { "Ephemeris Extension", "gsm_bssmap_le.ephemeris_ext",
1102             FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x02,
1103             NULL, HFILL }
1104                 },
1105                 { &hf_gsm_bssmap_le_real_time_int,
1106           { "Real-Time Integrity", "gsm_bssmap_le.real_time_int",
1107             FT_BOOLEAN, 8, TFS(&tfs_requested_not_requested), 0x01,
1108             NULL, HFILL }
1109                 },
1110                 { &hf_gsm_bssmap_le_lcs_cause_value,
1111                   { "Cause Value", "gsm_bssmap_le.lcsCauseValue",
1112                     FT_UINT8, BASE_HEX, VALS(bssmap_le_lcs_cause_values), 0x0,
1113                     NULL, HFILL}
1114                 },
1115                 { &hf_gsm_bssmap_le_diagnostic_value,
1116                   { "Diagnostic Value", "gsm_bssmap_le.diagnosticValue",
1117                     FT_UINT8, BASE_HEX, VALS(bssmap_le_position_method_failure_diagnostic_vals), 0x0,
1118                     NULL, HFILL}
1119                 },
1120                 { &hf_gsm_bssmap_le_client_category,
1121                   { "Client Category", "gsm_bssmap_le.lcsClientType.clientCategory",
1122                     FT_UINT8, BASE_HEX, VALS(bssmap_le_client_category), 0x0,
1123                     NULL, HFILL}
1124                 },
1125                 { &hf_gsm_bssmap_le_client_subtype,
1126                   { "Client Subtype", "gsm_bssmap_le.lcsClientType.clientSubtype",
1127                     FT_UINT8, BASE_HEX, VALS(bssmap_le_client_subtype), 0x0,
1128                     NULL, HFILL}
1129                 },
1130                 { &hf_gsm_bssmap_le_velocity_requested,
1131                   { "Velocity Requested", "gsm_bssmap_le.lcsQos.velocityRequested",
1132                     FT_UINT8, BASE_HEX, VALS(bssmap_le_velocity_requested_vals), 0x0,
1133                     NULL, HFILL}
1134                 },
1135                 { &hf_gsm_bssmap_le_vertical_coordinate_indicator,
1136                   { "Vertical Coordinate Indicator", "gsm_bssmap_le.lcsQos.verticalCoordinateIndicator",
1137                     FT_UINT8, BASE_HEX, VALS(bssmap_le_vertical_coordinate_indicator_vals), 0x0,
1138                     NULL, HFILL}
1139                 },
1140                 { &hf_gsm_bssmap_le_horizontal_accuracy_indicator,
1141                   { "Horizontal Accuracy Indicator", "gsm_bssmap_le.lcsQos.horizontalAccuracyIndicator",
1142                     FT_UINT8, BASE_HEX, VALS(bssmap_le_horizontal_accuracy_indicator_vals), 0x0,
1143                     NULL, HFILL}
1144                 },
1145                 { &hf_gsm_bssmap_le_horizontal_accuracy,
1146                   { "Horizontal Accuracy", "gsm_bssmap_le.lcsQos.horizontalAccuracy",
1147                     FT_UINT8, BASE_HEX, NULL, 0x0,
1148                     NULL, HFILL}
1149                 },
1150                 { &hf_gsm_bssmap_le_vertical_accuracy,
1151                   { "Vertical Accuracy", "gsm_bssmap_le.lcsQos.verticalAccuracy",
1152                     FT_UINT8, BASE_HEX, NULL, 0x0,
1153                     NULL, HFILL}
1154                 },
1155                 { &hf_gsm_bssmap_le_vertical_accuracy_indicator,
1156                   { "Vertical Accuracy Indicator", "gsm_bssmap_le.lcsQos.verticalAccuracyIndicator",
1157                     FT_UINT8, BASE_HEX, VALS(bssmap_le_vertical_accuracy_indicator_vals), 0x0,
1158                     NULL, HFILL}
1159                 },
1160                 { &hf_gsm_bssmap_le_response_time_category,
1161                   { "Response Time Category", "gsm_bssmap_le.lcsQos.responseTimeCategory",
1162                     FT_UINT8, BASE_HEX, VALS(bssmap_le_response_time_definitions_vals), 0x0,
1163                     NULL, HFILL}
1164                 },
1165
1166         };
1167         /* Setup protocol subtree array */
1168 #define NUM_INDIVIDUAL_ELEMS    1
1169         gint *ett[NUM_INDIVIDUAL_ELEMS + NUM_GSM_BSSMAP_LE_MSG +
1170                   NUM_GSM_BSSMAP_LE_ELEM];
1171
1172         ett[0] = &ett_bssmap_le_msg;
1173
1174         last_offset = NUM_INDIVIDUAL_ELEMS;
1175
1176         for (i=0; i < NUM_GSM_BSSMAP_LE_MSG; i++, last_offset++)
1177         {
1178                 ett_gsm_bssmap_le_msg[i] = -1;
1179                 ett[last_offset] = &ett_gsm_bssmap_le_msg[i];
1180         }
1181
1182         for (i=0; i < NUM_GSM_BSSMAP_LE_ELEM; i++, last_offset++)
1183         {
1184                 ett_gsm_bssmap_le_elem[i] = -1;
1185                 ett[last_offset] = &ett_gsm_bssmap_le_elem[i];
1186         }
1187
1188         /* Register the protocol name and description */
1189
1190         proto_bssmap_le =
1191                 proto_register_protocol("Lb-I/F BSSMAP LE", "GSM BSSMAP LE", "gsm_bssmap_le");
1192
1193         proto_register_field_array(proto_bssmap_le, hf, array_length(hf));
1194
1195         proto_register_subtree_array(ett, array_length(ett));
1196
1197         register_dissector("gsm_bssmap_le", dissect_bssmap_le, proto_bssmap_le);
1198 }
1199
1200 void
1201 proto_reg_handoff_gsm_bssmap_le(void)
1202 {
1203         dissector_handle_t bssmap_le_handle;
1204
1205         bssmap_le_handle = find_dissector("gsm_bssmap_le");
1206
1207         dissector_add_uint("bssap.pdu_type",  BSSAP_PDU_TYPE_BSSMAP, bssmap_le_handle);
1208
1209         gsm_bsslap_handle = find_dissector("gsm_bsslap");
1210 }