1 /* packet-btbredr.c 2 * Routines for Bluetooth baseband dissection 3 * Copyright 2014, Dominic Spill <[email protected]> 4 * Copyright 2009, Michael Ossmann <[email protected]> 5 * 6 * Wireshark - Network traffic analyzer 7 * By Gerald Combs <[email protected]> 8 * Copyright 1998 Gerald Combs 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License 12 * as published by the Free Software Foundation; either version 2 13 * of the License, or (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 23 */ 24 25 #ifdef HAVE_CONFIG_H 26 #include "config.h" 27 #else 28 #include <wireshark/config.h> 29 #endif 30 31 #include <epan/packet.h> 32 #include <epan/prefs.h> 33 34 #include <stdio.h> 35 36 /* function prototypes */ 37 void proto_reg_handoff_btbredr(void); 38 39 /* initialize the protocol and registered fields */ 40 static int proto_btbredr = -1; 41 static int hf_btbredr_meta = -1; 42 static int hf_btbredr_channel = -1; 43 static int hf_btbredr_signal = -1; 44 static int hf_btbredr_noise = -1; 45 static int hf_btbredr_ac_offenses = -1; 46 static int hf_btbredr_mod = -1; 47 static int hf_btbredr_transport = -1; 48 static int hf_btbredr_corrected_header = -1; 49 static int hf_btbredr_corrected_payload = -1; 50 static int hf_btbredr_lap = -1; 51 static int hf_btbredr_ref_lap = -1; 52 static int hf_btbredr_ref_uap = -1; 53 static int hf_btbredr_pkthdr = -1; 54 static int hf_btbredr_ltaddr = -1; 55 static int hf_btbredr_type = -1; 56 static int hf_btbredr_flags = -1; 57 static int hf_btbredr_flow = -1; 58 static int hf_btbredr_arqn = -1; 59 static int hf_btbredr_seqn = -1; 60 static int hf_btbredr_hec = -1; 61 static int hf_btbredr_payload = -1; 62 static int hf_btbredr_pldhdr = -1; 63 static int hf_btbredr_llid = -1; 64 static int hf_btbredr_pldflow = -1; 65 static int hf_btbredr_length = -1; 66 static int hf_btbredr_pldbody = -1; 67 static int hf_btbredr_crc = -1; 68 static int hf_btbredr_fhs_parity = -1; 69 static int hf_btbredr_fhs_lap = -1; 70 static int hf_btbredr_fhs_eir = -1; 71 static int hf_btbredr_fhs_sr = -1; 72 static int hf_btbredr_fhs_uap = -1; 73 static int hf_btbredr_fhs_nap = -1; 74 static int hf_btbredr_fhs_class = -1; 75 static int hf_btbredr_fhs_ltaddr = -1; 76 static int hf_btbredr_fhs_clk = -1; 77 static int hf_btbredr_fhs_psmode = -1; 78 79 /* field values */ 80 static const true_false_string direction = { 81 "Slave to Master", 82 "Master to Slave" 83 }; 84 85 static const true_false_string clock_bits = { 86 "27", 87 "6" 88 }; 89 90 static const true_false_string valid_flags = { 91 "Invalid", 92 "Valid" 93 }; 94 95 static const value_string modulation[] = { 96 { 0x0, "Basic Rate (GFSK)" }, 97 { 0x1, "Enhanced Data Rate (PI/2-DQPSK)" }, 98 { 0x2, "Enhanced Data Rate (8DPSK)" } 99 }; 100 101 static const value_string transports[] = { 102 { 0x0, "unknown" }, 103 { 0x1, "SCO" }, 104 { 0x2, "eSCO" }, 105 { 0x3, "ACL" }, 106 { 0x4, "CSB" } 107 }; 108 109 static const value_string packet_types[] = { 110 /* generic names for unknown logical transport */ 111 { 0x0, "NULL" }, 112 { 0x1, "POLL" }, 113 { 0x2, "FHS" }, 114 { 0x3, "DM1" }, 115 { 0x4, "DH1/2-DH1" }, 116 { 0x5, "HV1" }, 117 { 0x6, "HV2/2-EV3" }, 118 { 0x7, "HV3/EV3/3-EV3" }, 119 { 0x8, "DV/3-DH1" }, 120 { 0x9, "AUX1" }, 121 { 0xa, "DM3/2-DH3" }, 122 { 0xb, "DH3/3-DH3" }, 123 { 0xc, "EV4/2-EV5" }, 124 { 0xd, "EV5/3-EV5" }, 125 { 0xe, "DM5/2-DH5" }, 126 { 0xf, "DH5/3-DH5" }, 127 { 0, NULL } 128 }; 129 130 static const value_string sr_modes[] = { 131 { 0x0, "R0" }, 132 { 0x1, "R1" }, 133 { 0x2, "R2" }, 134 { 0x3, "Reserved" }, 135 { 0, NULL } 136 }; 137 138 static const range_string ps_modes[] = { 139 { 0x0, 0x0, "Mandatory scan mode" }, 140 { 0x1, 0x7, "Reserved" }, 141 { 0, 0, NULL } 142 }; 143 144 static const value_string llid_codes[] = { 145 { 0x0, "undefined" }, 146 { 0x1, "Continuation fragment of an L2CAP message (ACL-U)" }, 147 { 0x2, "Start of an L2CAP message or no fragmentation (ACL-U)" }, 148 { 0x3, "LMP message (ACL-C)" }, 149 { 0, NULL } 150 }; 151 152 /* initialize the subtree pointers */ 153 static gint ett_btbredr = -1; 154 static gint ett_btbredr_meta = -1; 155 static gint ett_btbredr_pkthdr = -1; 156 static gint ett_btbredr_flags = -1; 157 static gint ett_btbredr_payload = -1; 158 static gint ett_btbredr_pldhdr = -1; 159 160 /* subdissectors */ 161 static dissector_handle_t btlmp_handle = NULL; 162 static dissector_handle_t btl2cap_handle = NULL; 163 164 /* packet header flags */ 165 static const int *flag_fields[] = { 166 &hf_btbredr_flow, 167 &hf_btbredr_arqn, 168 &hf_btbredr_seqn, 169 NULL 170 }; 171 172 /* one byte payload header */ 173 int 174 dissect_payload_header1(proto_tree *tree, tvbuff_t *tvb, int offset) 175 { 176 proto_item *hdr_item; 177 proto_tree *hdr_tree; 178 179 DISSECTOR_ASSERT(tvb_reported_length_remaining(tvb, offset) >= 1); 180 181 hdr_item = proto_tree_add_item(tree, hf_btbredr_pldhdr, tvb, offset, 1, ENC_NA); 182 hdr_tree = proto_item_add_subtree(hdr_item, ett_btbredr_pldhdr); 183 184 proto_tree_add_item(hdr_tree, hf_btbredr_llid, tvb, offset, 1, ENC_NA); 185 proto_tree_add_item(hdr_tree, hf_btbredr_pldflow, tvb, offset, 1, ENC_NA); 186 proto_tree_add_item(hdr_tree, hf_btbredr_length, tvb, offset, 1, ENC_NA); 187 188 /* payload length */ 189 return tvb_get_guint8(tvb, offset) >> 3; 190 } 191 192 void 193 dissect_fhs(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset) 194 { 195 proto_item *fhs_item, *psmode_item; 196 proto_tree *fhs_tree; 197 const gchar *description; 198 guint8 psmode; 199 200 if(tvb_reported_length_remaining(tvb, offset) != 20) { 201 col_add_str(pinfo->cinfo, COL_INFO, "Encrypted or malformed payload data"); 202 return; 203 } 204 205 fhs_item = proto_tree_add_item(tree, hf_btbredr_payload, tvb, offset, -1, ENC_NA); 206 fhs_tree = proto_item_add_subtree(fhs_item, ett_btbredr_payload); 207 208 /* Use proto_tree_add_bits_item() to get around 32bit limit on bitmasks */ 209 proto_tree_add_bits_item(fhs_tree, hf_btbredr_fhs_parity, tvb, offset*8, 34, ENC_LITTLE_ENDIAN); 210 /* proto_tree_add_item(fhs_tree, hf_btbredr_fhs_parity, tvb, offset, 5, ENC_LITTLE_ENDIAN); */ 211 offset += 4; 212 213 proto_tree_add_item(fhs_tree, hf_btbredr_fhs_lap, tvb, offset, 4, ENC_LITTLE_ENDIAN); 214 offset += 3; 215 216 proto_tree_add_item(fhs_tree, hf_btbredr_fhs_eir, tvb, offset, 1, ENC_NA); 217 /* skipping 1 undefined bit */ 218 proto_tree_add_item(fhs_tree, hf_btbredr_fhs_sr, tvb, offset, 1, ENC_NA); 219 /* skipping 2 reserved bits */ 220 offset += 1; 221 222 proto_tree_add_item(fhs_tree, hf_btbredr_fhs_uap, tvb, offset, 1, ENC_NA); 223 offset += 1; 224 225 proto_tree_add_item(fhs_tree, hf_btbredr_fhs_nap, tvb, offset, 2, ENC_LITTLE_ENDIAN); 226 offset += 2; 227 228 proto_tree_add_item(fhs_tree, hf_btbredr_fhs_class, tvb, offset, 3, ENC_LITTLE_ENDIAN); 229 offset += 3; 230 231 proto_tree_add_item(fhs_tree, hf_btbredr_fhs_ltaddr, tvb, offset, 1, ENC_NA); 232 proto_tree_add_item(fhs_tree, hf_btbredr_fhs_clk, tvb, offset, 4, ENC_LITTLE_ENDIAN); 233 offset += 3; 234 235 psmode = tvb_get_guint8(tvb, offset); 236 description = try_rval_to_str(psmode, ps_modes); 237 psmode_item = proto_tree_add_item(fhs_tree, hf_btbredr_fhs_psmode, tvb, offset, 1, ENC_NA); 238 if (description) 239 proto_item_append_text(psmode_item, " (%s)", description); 240 offset += 1; 241 242 proto_tree_add_item(fhs_tree, hf_btbredr_crc, tvb, offset, 2, ENC_LITTLE_ENDIAN); 243 offset += 2; 244 } 245 246 void 247 dissect_dm1(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset) 248 { 249 int len; /* payload length indicated by payload header */ 250 int llid; /* logical link id */ 251 int l2len; /* length indicated by l2cap header */ 252 proto_item *dm1_item; 253 proto_tree *dm1_tree; 254 tvbuff_t *pld_tvb; 255 256 /* 257 * FIXME 258 * I'm probably doing a terrible, terrible thing here, but it gets my 259 * initial test cases working. 260 */ 261 guint16 fake_acl_data; 262 263 if(tvb_reported_length_remaining(tvb, offset) < 3) { 264 col_add_str(pinfo->cinfo, COL_INFO, "Encrypted or malformed payload data"); 265 return; 266 } 267 268 dm1_item = proto_tree_add_item(tree, hf_btbredr_payload, tvb, offset, -1, ENC_NA); 269 dm1_tree = proto_item_add_subtree(dm1_item, ett_btbredr_payload); 270 271 len = dissect_payload_header1(dm1_tree, tvb, offset); 272 llid = tvb_get_guint8(tvb, offset) & 0x3; 273 offset += 1; 274 275 if(tvb_reported_length_remaining(tvb, offset) < len + 2) { 276 col_add_str(pinfo->cinfo, COL_INFO, "Encrypted or malformed payload data"); 277 return; 278 } 279 280 if (llid == 3 && btlmp_handle) { 281 /* LMP */ 282 pld_tvb = tvb_new_subset(tvb, offset, len, len); 283 call_dissector(btlmp_handle, pld_tvb, pinfo, dm1_tree); 284 } else if (llid == 2 && btl2cap_handle) { 285 /* unfragmented L2CAP or start of fragment */ 286 l2len = tvb_get_letohs(tvb, offset); 287 if (l2len + 4 == len) { 288 /* unfragmented */ 289 pld_tvb = tvb_new_subset(tvb, offset, len, len); 290 call_dissector_with_data(btl2cap_handle, pld_tvb, pinfo, dm1_tree, &fake_acl_data); 291 } else { 292 /* start of fragment */ 293 proto_tree_add_item(dm1_tree, hf_btbredr_pldbody, tvb, offset, len, ENC_NA); 294 } 295 } else { 296 proto_tree_add_item(dm1_tree, hf_btbredr_pldbody, tvb, offset, len, ENC_NA); 297 } 298 offset += len; 299 300 proto_tree_add_item(dm1_tree, hf_btbredr_crc, tvb, offset, 2, ENC_LITTLE_ENDIAN); 301 offset += 2; 302 } 303 304 /* dissect a packet */ 305 static int 306 dissect_btbredr(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) 307 { 308 proto_item *btbredr_item, *meta_item, *pkthdr_item; 309 proto_tree *btbredr_tree, *meta_tree, *pkthdr_tree; 310 int offset; 311 /* Avoid error: 'type' may be used uninitialized in this function */ 312 guint8 type = 0xff; 313 const gchar *info; 314 315 /* sanity check: length */ 316 if (tvb_reported_length(tvb) > 0 && tvb_reported_length(tvb) < 9) 317 /* bad length: look for a different dissector */ 318 return 0; 319 320 /* maybe should verify HEC */ 321 322 /* make entries in protocol column and info column on summary display */ 323 col_set_str(pinfo->cinfo, COL_PROTOCOL, "Bluetooth"); 324 325 if (tvb_reported_length(tvb) == 0) { 326 info = "ID"; 327 } else { 328 type = (tvb_get_guint8(tvb, 16) >> 3) & 0x0f; 329 info = val_to_str(type, packet_types, "Unknown type: 0x%x"); 330 } 331 332 col_clear(pinfo->cinfo, COL_INFO); 333 col_add_str(pinfo->cinfo, COL_INFO, info); 334 335 /* see if we are being asked for details */ 336 if (tree) { 337 338 /* create display subtree for the protocol */ 339 offset = 0; 340 btbredr_item = proto_tree_add_item(tree, proto_btbredr, tvb, offset, -1, ENC_NA); 341 btbredr_tree = proto_item_add_subtree(btbredr_item, ett_btbredr); 342 343 /* ID packets have no header, no payload */ 344 if (tvb_reported_length(tvb) == 0) 345 return 1; 346 347 /* meta data */ 348 meta_item = proto_tree_add_item(btbredr_tree, hf_btbredr_meta, tvb, offset, 3, ENC_NA); 349 meta_tree = proto_item_add_subtree(meta_item, ett_btbredr_meta); 350 351 proto_tree_add_item(meta_tree, hf_btbredr_channel, tvb, offset, 1, ENC_NA); 352 offset += 1; 353 proto_tree_add_item(meta_tree, hf_btbredr_signal, tvb, offset, 1, ENC_NA); 354 offset += 1; 355 proto_tree_add_item(meta_tree, hf_btbredr_noise, tvb, offset, 1, ENC_NA); 356 offset += 1; 357 proto_tree_add_item(meta_tree, hf_btbredr_ac_offenses, tvb, offset, 1, ENC_NA); 358 offset += 1; 359 360 proto_tree_add_item(meta_tree, hf_btbredr_mod, tvb, offset, 1, ENC_NA); 361 proto_tree_add_item(meta_tree, hf_btbredr_transport, tvb, offset, 1, ENC_NA); 362 offset += 1; 363 364 proto_tree_add_item(meta_tree, hf_btbredr_corrected_header, tvb, offset, 1, ENC_NA); 365 offset += 1; 366 proto_tree_add_item(meta_tree, hf_btbredr_corrected_payload, tvb, offset, 2, ENC_LITTLE_ENDIAN); 367 offset += 2; 368 369 proto_tree_add_item(meta_tree, hf_btbredr_lap, tvb, offset, 4, ENC_LITTLE_ENDIAN); 370 offset += 4; 371 proto_tree_add_item(meta_tree, hf_btbredr_ref_lap, tvb, offset, 3, ENC_LITTLE_ENDIAN); 372 offset += 3; 373 proto_tree_add_item(meta_tree, hf_btbredr_ref_uap, tvb, offset, 1, ENC_NA); 374 offset += 1; 375 376 377 /* packet header */ 378 pkthdr_item = proto_tree_add_item(btbredr_tree, hf_btbredr_pkthdr, tvb, offset, 3, ENC_NA); 379 pkthdr_tree = proto_item_add_subtree(pkthdr_item, ett_btbredr_pkthdr); 380 381 proto_tree_add_item(pkthdr_tree, hf_btbredr_ltaddr, tvb, offset, 1, ENC_NA); 382 proto_tree_add_item(pkthdr_tree, hf_btbredr_type, tvb, offset, 1, ENC_NA); 383 offset += 1; 384 proto_tree_add_bitmask(pkthdr_tree, tvb, offset, hf_btbredr_flags, 385 ett_btbredr_flags, flag_fields, ENC_NA); 386 offset += 1; 387 proto_tree_add_item(pkthdr_tree, hf_btbredr_hec, tvb, offset, 1, ENC_NA); 388 offset += 2; 389 390 /* payload */ 391 switch (type) { 392 case 0x0: /* NULL */ 393 case 0x1: /* POLL */ 394 break; 395 case 0x2: /* FHS */ 396 dissect_fhs(btbredr_tree, tvb, pinfo, offset); 397 break; 398 case 0x3: /* DM1 */ 399 dissect_dm1(btbredr_tree, tvb, pinfo, offset); 400 break; 401 case 0x4: /* DH1/2-DH1 */ 402 dissect_dm1(btbredr_tree, tvb, pinfo, offset); 403 break; 404 case 0x5: /* HV1 */ 405 case 0x6: /* HV2/2-EV3 */ 406 case 0x7: /* HV3/EV3/3-EV3 */ 407 case 0x8: /* DV/3-DH1 */ 408 case 0x9: /* AUX1 */ 409 case 0xa: /* DM3/2-DH3 */ 410 case 0xb: /* DH3/3-DH3 */ 411 case 0xc: /* EV4/2-EV5 */ 412 case 0xd: /* EV5/3-EV5 */ 413 case 0xe: /* DM5/2-DH5 */ 414 case 0xf: /* DH5/3-DH5 */ 415 proto_tree_add_item(btbredr_tree, hf_btbredr_payload, tvb, offset, -1, ENC_NA); 416 break; 417 default: 418 break; 419 } 420 } 421 422 /* Return the amount of data this dissector was able to dissect */ 423 return tvb_reported_length(tvb); 424 } 425 426 /* register the protocol with Wireshark */ 427 void 428 proto_register_btbredr(void) 429 { 430 /* list of fields */ 431 static hf_register_info hf[] = { 432 { &hf_btbredr_meta, 433 { "Meta Data", "btbredr.meta", 434 FT_NONE, BASE_NONE, NULL, 0x0, 435 "Meta Data About the Packet", HFILL } 436 }, 437 { &hf_btbredr_channel, 438 { "Channel", "btbredr.channel", 439 FT_UINT8, BASE_DEC, NULL, 0x0, 440 "Channel (0-78)", HFILL } 441 }, 442 { &hf_btbredr_signal, 443 { "Signal", "btbredr.signal", 444 FT_INT8, BASE_DEC, NULL, 0x0, 445 "Signal Power", HFILL } 446 }, 447 { &hf_btbredr_noise, 448 { "Noise", "btbredr.noise", 449 FT_INT8, BASE_DEC, NULL, 0x0, 450 "Noise Power", HFILL } 451 }, 452 { &hf_btbredr_ac_offenses, 453 { "AC Offenses", "btbredr.ac_offenses", 454 FT_UINT8, BASE_DEC, NULL, 0x0, 455 "Access Code Offenses", HFILL } 456 }, 457 { &hf_btbredr_mod, 458 { "Transport Rate", "btbredr.mod", 459 FT_UINT8, BASE_HEX, VALS(&modulation), 0x02, 460 "Transport Data Rate", HFILL } 461 }, 462 { &hf_btbredr_transport, 463 { "Transport", "btbredr.transport", 464 FT_UINT8, BASE_HEX, VALS(&transports), 0x70, 465 "Logical Transport", HFILL } 466 }, 467 { &hf_btbredr_corrected_header, 468 { "Corrected Header", "btbredr.corrected_header", 469 FT_UINT8, BASE_DEC, NULL, 0x0, 470 "Corrected Header Bits", HFILL } 471 }, 472 { &hf_btbredr_corrected_payload, 473 { "Corrected Payload", "btbredr.corrected_payload", 474 FT_UINT16, BASE_DEC, NULL, 0x0, 475 "Corrected Payload Bits", HFILL } 476 }, 477 { &hf_btbredr_lap, 478 { "LAP", "btbredr.lap", 479 FT_UINT32, BASE_HEX, NULL, 0x0, 480 "Lower Address Part", HFILL } 481 }, 482 { &hf_btbredr_ref_lap, 483 { "Ref. LAP", "btbredr.ref_lap", 484 FT_UINT32, BASE_HEX, NULL, 0x0, 485 "Reference LAP", HFILL } 486 }, 487 { &hf_btbredr_ref_uap, 488 { "Ref. UAP", "btbredr.ref_uap", 489 FT_UINT8, BASE_HEX, NULL, 0x0, 490 "Reference UAP", HFILL } 491 }, 492 { &hf_btbredr_pkthdr, 493 { "Packet Header", "btbredr.pkthdr", 494 FT_NONE, BASE_NONE, NULL, 0x0, 495 "Bluetooth Baseband Packet Header", HFILL } 496 }, 497 { &hf_btbredr_ltaddr, 498 { "LT_ADDR", "btbredr.lt_addr", 499 FT_UINT8, BASE_HEX, NULL, 0x07, 500 "Logical Transport Address", HFILL } 501 }, 502 { &hf_btbredr_type, 503 { "TYPE", "btbredr.type", 504 FT_UINT8, BASE_HEX, VALS(packet_types), 0x78, 505 "Packet Type", HFILL } 506 }, 507 { &hf_btbredr_flags, 508 { "Flags", "btbredr.flags", 509 FT_UINT8, BASE_HEX, NULL, 0x0, 510 "Packet Header Flags", HFILL } 511 }, 512 { &hf_btbredr_flow, 513 { "FLOW", "btbredr.flow", 514 FT_BOOLEAN, 8, NULL, 0x01, 515 "Flow control indication", HFILL } 516 }, 517 { &hf_btbredr_arqn, 518 { "ARQN", "btbredr.arqn", 519 FT_BOOLEAN, 8, NULL, 0x02, 520 "Acknowledgment indication", HFILL } 521 }, 522 { &hf_btbredr_seqn, 523 { "SEQN", "btbredr.seqn", 524 FT_BOOLEAN, 8, NULL, 0x04, 525 "Sequence number", HFILL } 526 }, 527 { &hf_btbredr_hec, 528 { "HEC", "btbredr.lt_addr", 529 FT_UINT8, BASE_HEX, NULL, 0x0, 530 "Header Error Check", HFILL } 531 }, 532 { &hf_btbredr_payload, 533 { "Payload", "btbredr.payload", 534 FT_NONE, BASE_NONE, NULL, 0x0, 535 NULL, HFILL } 536 }, 537 { &hf_btbredr_llid, 538 { "LLID", "btbredr.llid", 539 FT_UINT8, BASE_HEX, VALS(llid_codes), 0x03, 540 "Logical Link ID", HFILL } 541 }, 542 { &hf_btbredr_pldflow, 543 { "Flow", "btbredr.flow", 544 FT_BOOLEAN, 8, NULL, 0x04, 545 "Payload Flow indication", HFILL } 546 }, 547 { &hf_btbredr_length, 548 { "Length", "btbredr.length", 549 FT_UINT8, BASE_DEC, NULL, 0xf8, 550 "Payload Length", HFILL } 551 }, 552 { &hf_btbredr_pldhdr, 553 { "Payload Header", "btbredr.pldhdr", 554 FT_NONE, BASE_NONE, NULL, 0x0, 555 NULL, HFILL } 556 }, 557 { &hf_btbredr_pldbody, 558 { "Payload Body", "btbredr.pldbody", 559 FT_BYTES, BASE_NONE, NULL, 0x0, 560 NULL, HFILL } 561 }, 562 { &hf_btbredr_crc, 563 { "CRC", "btbredr.crc", 564 FT_UINT16, BASE_HEX, NULL, 0x0, 565 "Payload CRC", HFILL } 566 }, 567 { &hf_btbredr_fhs_parity, 568 { "Parity", "btbredr.parity", 569 /* FIXME this doesn't work because bitmasks can only be 32 bits */ 570 FT_UINT64, BASE_HEX, NULL, /*0x00000003ffffffffULL,*/ 0x0, 571 "LAP parity", HFILL } 572 }, 573 { &hf_btbredr_fhs_lap, 574 { "LAP", "btbredr.lap", 575 FT_UINT24, BASE_HEX, NULL, 0x03fffffc, 576 "Lower Address Part", HFILL } 577 }, 578 { &hf_btbredr_fhs_eir, 579 { "EIR", "btbredr.eir", 580 FT_BOOLEAN, 8, NULL, 0x04, 581 "Extended Inquiry Response packet may follow", HFILL } 582 }, 583 { &hf_btbredr_fhs_sr, 584 { "SR", "btbredr.sr", 585 FT_UINT8, BASE_HEX, VALS(sr_modes), 0x30, 586 "Scan Repetition", HFILL } 587 }, 588 { &hf_btbredr_fhs_uap, 589 { "UAP", "btbredr.uap", 590 FT_UINT8, BASE_HEX, NULL, 0x0, 591 "Upper Address Part", HFILL } 592 }, 593 { &hf_btbredr_fhs_nap, 594 { "NAP", "btbredr.nap", 595 FT_UINT16, BASE_HEX, NULL, 0x0, 596 "Non-Significant Address Part", HFILL } 597 }, 598 { &hf_btbredr_fhs_class, /* FIXME break out further */ 599 { "Class of Device", "btbredr.class", 600 FT_UINT24, BASE_HEX, NULL, 0x0, 601 NULL, HFILL } 602 }, 603 { &hf_btbredr_fhs_ltaddr, 604 { "LT_ADDR", "btbredr.lt_addr", 605 FT_UINT8, BASE_HEX, NULL, 0x07, 606 "Logical Transport Address", HFILL } 607 }, 608 { &hf_btbredr_fhs_clk, 609 { "CLK", "btbredr.clk", 610 FT_UINT32, BASE_HEX, NULL, 0x1ffffff8, 611 "Clock bits 2 through 27", HFILL } 612 }, 613 { &hf_btbredr_fhs_psmode, 614 { "Page Scan Mode", "btbredr.psmode", 615 FT_UINT8, BASE_HEX, NULL, 0xe0, 616 NULL, HFILL } 617 }, 618 }; 619 620 /* protocol subtree arrays */ 621 static gint *ett[] = { 622 &ett_btbredr, 623 &ett_btbredr_meta, 624 &ett_btbredr_pkthdr, 625 &ett_btbredr_flags, 626 &ett_btbredr_payload, 627 &ett_btbredr_pldhdr, 628 }; 629 630 /* register the protocol name and description */ 631 proto_btbredr = proto_register_protocol( 632 "Bluetooth BR/EDR Baseband", /* full name */ 633 "BT BR/EDR Baseband", /* short name */ 634 "btbredr" /* abbreviation (e.g. for filters) */ 635 ); 636 637 /* register the header fields and subtrees used */ 638 proto_register_field_array(proto_btbredr, hf, array_length(hf)); 639 proto_register_subtree_array(ett, array_length(ett)); 640 } 641 642 /* Remove this once recent Wireshark/TCPdump releases are more common */ 643 #ifndef WTAP_ENCAP_BLUETOOTH_BREDR_BB 644 #define WTAP_ENCAP_BLUETOOTH_BREDR_BB 161 645 #endif 646 647 void 648 proto_reg_handoff_btbredr(void) 649 { 650 dissector_handle_t btbredr_handle; 651 btbredr_handle = new_create_dissector_handle(dissect_btbredr, 652 proto_btbredr); 653 dissector_add_uint("wtap_encap", 654 WTAP_ENCAP_BLUETOOTH_BREDR_BB, 655 btbredr_handle); 656 657 btlmp_handle = find_dissector("btlmp"); 658 btl2cap_handle = find_dissector("btl2cap"); 659 } 660 661 /* 662 * Editor modelines - http://www.wireshark.org/tools/modelines.html 663 * 664 * Local variables: 665 * c-basic-offset: 4 666 * tab-width: 8 667 * indent-tabs-mode: nil 668 * End: 669 * 670 * vi: set shiftwidth=4 tabstop=8 expandtab: 671 * :indentSize=4:tabSize=8:noTabs=true: 672 */ 673