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_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_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_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_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 pinfo->private_data = &fake_acl_data; 290 pld_tvb = tvb_new_subset(tvb, offset, len, len); 291 call_dissector(btl2cap_handle, pld_tvb, pinfo, dm1_tree); 292 } else { 293 /* start of fragment */ 294 proto_tree_add_item(dm1_tree, hf_btbredr_pldbody, tvb, offset, len, ENC_NA); 295 } 296 } else { 297 proto_tree_add_item(dm1_tree, hf_btbredr_pldbody, tvb, offset, len, ENC_NA); 298 } 299 offset += len; 300 301 proto_tree_add_item(dm1_tree, hf_btbredr_crc, tvb, offset, 2, ENC_LITTLE_ENDIAN); 302 offset += 2; 303 } 304 305 /* dissect a packet */ 306 static int 307 dissect_btbredr(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) 308 { 309 proto_item *btbredr_item, *meta_item, *pkthdr_item; 310 proto_tree *btbredr_tree, *meta_tree, *pkthdr_tree; 311 int offset; 312 /* Avoid error: 'type' may be used uninitialized in this function */ 313 guint8 type = 0xff; 314 const gchar *info; 315 316 /* sanity check: length */ 317 if (tvb_length(tvb) > 0 && tvb_length(tvb) < 9) 318 /* bad length: look for a different dissector */ 319 return 0; 320 321 /* maybe should verify HEC */ 322 323 /* make entries in protocol column and info column on summary display */ 324 col_set_str(pinfo->cinfo, COL_PROTOCOL, "Bluetooth"); 325 326 if (tvb_length(tvb) == 0) { 327 info = "ID"; 328 } else { 329 type = (tvb_get_guint8(tvb, 16) >> 3) & 0x0f; 330 info = val_to_str(type, packet_types, "Unknown type: 0x%x"); 331 } 332 333 col_clear(pinfo->cinfo, COL_INFO); 334 col_add_str(pinfo->cinfo, COL_INFO, info); 335 336 /* see if we are being asked for details */ 337 if (tree) { 338 339 /* create display subtree for the protocol */ 340 offset = 0; 341 btbredr_item = proto_tree_add_item(tree, proto_btbredr, tvb, offset, -1, ENC_NA); 342 btbredr_tree = proto_item_add_subtree(btbredr_item, ett_btbredr); 343 344 /* ID packets have no header, no payload */ 345 if (tvb_length(tvb) == 0) 346 return 1; 347 348 /* meta data */ 349 meta_item = proto_tree_add_item(btbredr_tree, hf_btbredr_meta, tvb, offset, 3, ENC_NA); 350 meta_tree = proto_item_add_subtree(meta_item, ett_btbredr_meta); 351 352 proto_tree_add_item(meta_tree, hf_btbredr_channel, tvb, offset, 1, ENC_NA); 353 offset += 1; 354 proto_tree_add_item(meta_tree, hf_btbredr_signal, tvb, offset, 1, ENC_NA); 355 offset += 1; 356 proto_tree_add_item(meta_tree, hf_btbredr_noise, tvb, offset, 1, ENC_NA); 357 offset += 1; 358 proto_tree_add_item(meta_tree, hf_btbredr_ac_offenses, tvb, offset, 1, ENC_NA); 359 offset += 1; 360 361 proto_tree_add_item(meta_tree, hf_btbredr_mod, tvb, offset, 1, ENC_NA); 362 proto_tree_add_item(meta_tree, hf_btbredr_transport, tvb, offset, 1, ENC_NA); 363 offset += 1; 364 365 proto_tree_add_item(meta_tree, hf_btbredr_corrected_header, tvb, offset, 1, ENC_NA); 366 offset += 1; 367 proto_tree_add_item(meta_tree, hf_btbredr_corrected_payload, tvb, offset, 2, ENC_LITTLE_ENDIAN); 368 offset += 2; 369 370 proto_tree_add_item(meta_tree, hf_btbredr_lap, tvb, offset, 4, ENC_LITTLE_ENDIAN); 371 offset += 4; 372 proto_tree_add_item(meta_tree, hf_btbredr_ref_lap, tvb, offset, 3, ENC_LITTLE_ENDIAN); 373 offset += 3; 374 proto_tree_add_item(meta_tree, hf_btbredr_ref_uap, tvb, offset, 1, ENC_NA); 375 offset += 1; 376 377 378 /* packet header */ 379 pkthdr_item = proto_tree_add_item(btbredr_tree, hf_btbredr_pkthdr, tvb, offset, 3, ENC_NA); 380 pkthdr_tree = proto_item_add_subtree(pkthdr_item, ett_btbredr_pkthdr); 381 382 proto_tree_add_item(pkthdr_tree, hf_btbredr_ltaddr, tvb, offset, 1, ENC_NA); 383 proto_tree_add_item(pkthdr_tree, hf_btbredr_type, tvb, offset, 1, ENC_NA); 384 offset += 1; 385 proto_tree_add_bitmask(pkthdr_tree, tvb, offset, hf_btbredr_flags, 386 ett_btbredr_flags, flag_fields, ENC_NA); 387 offset += 1; 388 proto_tree_add_item(pkthdr_tree, hf_btbredr_hec, tvb, offset, 1, ENC_NA); 389 offset += 2; 390 391 /* payload */ 392 switch (type) { 393 case 0x0: /* NULL */ 394 case 0x1: /* POLL */ 395 break; 396 case 0x2: /* FHS */ 397 dissect_fhs(btbredr_tree, tvb, pinfo, offset); 398 break; 399 case 0x3: /* DM1 */ 400 dissect_dm1(btbredr_tree, tvb, pinfo, offset); 401 break; 402 case 0x4: /* DH1/2-DH1 */ 403 dissect_dm1(btbredr_tree, tvb, pinfo, offset); 404 break; 405 case 0x5: /* HV1 */ 406 case 0x6: /* HV2/2-EV3 */ 407 case 0x7: /* HV3/EV3/3-EV3 */ 408 case 0x8: /* DV/3-DH1 */ 409 case 0x9: /* AUX1 */ 410 case 0xa: /* DM3/2-DH3 */ 411 case 0xb: /* DH3/3-DH3 */ 412 case 0xc: /* EV4/2-EV5 */ 413 case 0xd: /* EV5/3-EV5 */ 414 case 0xe: /* DM5/2-DH5 */ 415 case 0xf: /* DH5/3-DH5 */ 416 proto_tree_add_item(btbredr_tree, hf_btbredr_payload, tvb, offset, -1, ENC_NA); 417 break; 418 default: 419 break; 420 } 421 } 422 423 /* Return the amount of data this dissector was able to dissect */ 424 return tvb_length(tvb); 425 } 426 427 /* register the protocol with Wireshark */ 428 void 429 proto_register_btbredr(void) 430 { 431 /* list of fields */ 432 static hf_register_info hf[] = { 433 { &hf_btbredr_meta, 434 { "Meta Data", "btbredr.meta", 435 FT_NONE, BASE_NONE, NULL, 0x0, 436 "Meta Data About the Packet", HFILL } 437 }, 438 { &hf_btbredr_channel, 439 { "Channel", "btbredr.channel", 440 FT_UINT8, BASE_DEC, NULL, 0x0, 441 "Channel (0-78)", HFILL } 442 }, 443 { &hf_btbredr_signal, 444 { "Signal", "btbredr.signal", 445 FT_UINT8, BASE_DEC, NULL, 0x0, 446 "Signal Power", HFILL } 447 }, 448 { &hf_btbredr_noise, 449 { "Noise", "btbredr.noise", 450 FT_UINT8, BASE_DEC, NULL, 0x0, 451 "Noise Power", HFILL } 452 }, 453 { &hf_btbredr_ac_offenses, 454 { "AC Offenses", "btbredr.ac_offenses", 455 FT_UINT8, BASE_DEC, NULL, 0x0, 456 "Access Code Offenses", HFILL } 457 }, 458 { &hf_btbredr_mod, 459 { "Transport Rate", "btbredr.mod", 460 FT_UINT8, BASE_HEX, VALS(&modulation), 0x02, 461 "Transport Data Rate", HFILL } 462 }, 463 { &hf_btbredr_transport, 464 { "Transport", "btbredr.transport", 465 FT_UINT8, BASE_HEX, VALS(&transports), 0x70, 466 "Logical Transport", HFILL } 467 }, 468 { &hf_btbredr_corrected_header, 469 { "Corrected Header", "btbredr.corrected_header", 470 FT_UINT8, BASE_DEC, NULL, 0x0, 471 "Corrected Header Bits", HFILL } 472 }, 473 { &hf_btbredr_corrected_payload, 474 { "Corrected Payload", "btbredr.corrected_payload", 475 FT_UINT16, BASE_DEC, NULL, 0x0, 476 "Corrected Payload Bits", HFILL } 477 }, 478 { &hf_btbredr_lap, 479 { "LAP", "btbredr.lap", 480 FT_UINT32, BASE_HEX, NULL, 0x0, 481 "Lower Address Part", HFILL } 482 }, 483 { &hf_btbredr_ref_lap, 484 { "Ref. LAP", "btbredr.ref_lap", 485 FT_UINT32, BASE_HEX, NULL, 0x0, 486 "Reference LAP", HFILL } 487 }, 488 { &hf_btbredr_ref_uap, 489 { "Ref. UAP", "btbredr.ref_uap", 490 FT_UINT8, BASE_HEX, NULL, 0x0, 491 "Reference UAP", HFILL } 492 }, 493 { &hf_btbredr_pkthdr, 494 { "Packet Header", "btbredr.pkthdr", 495 FT_NONE, BASE_NONE, NULL, 0x0, 496 "Bluetooth Baseband Packet Header", HFILL } 497 }, 498 { &hf_btbredr_ltaddr, 499 { "LT_ADDR", "btbredr.lt_addr", 500 FT_UINT8, BASE_HEX, NULL, 0x07, 501 "Logical Transport Address", HFILL } 502 }, 503 { &hf_btbredr_type, 504 { "TYPE", "btbredr.type", 505 FT_UINT8, BASE_HEX, VALS(packet_types), 0x78, 506 "Packet Type", HFILL } 507 }, 508 { &hf_btbredr_flags, 509 { "Flags", "btbredr.flags", 510 FT_UINT8, BASE_HEX, NULL, 0x0, 511 "Packet Header Flags", HFILL } 512 }, 513 { &hf_btbredr_flow, 514 { "FLOW", "btbredr.flow", 515 FT_BOOLEAN, 8, NULL, 0x01, 516 "Flow control indication", HFILL } 517 }, 518 { &hf_btbredr_arqn, 519 { "ARQN", "btbredr.arqn", 520 FT_BOOLEAN, 8, NULL, 0x02, 521 "Acknowledgment indication", HFILL } 522 }, 523 { &hf_btbredr_seqn, 524 { "SEQN", "btbredr.seqn", 525 FT_BOOLEAN, 8, NULL, 0x04, 526 "Sequence number", HFILL } 527 }, 528 { &hf_btbredr_hec, 529 { "HEC", "btbredr.lt_addr", 530 FT_UINT8, BASE_HEX, NULL, 0x0, 531 "Header Error Check", HFILL } 532 }, 533 { &hf_btbredr_payload, 534 { "Payload", "btbredr.payload", 535 FT_NONE, BASE_NONE, NULL, 0x0, 536 NULL, HFILL } 537 }, 538 { &hf_btbredr_llid, 539 { "LLID", "btbredr.llid", 540 FT_UINT8, BASE_HEX, VALS(llid_codes), 0x03, 541 "Logical Link ID", HFILL } 542 }, 543 { &hf_btbredr_pldflow, 544 { "Flow", "btbredr.flow", 545 FT_BOOLEAN, 8, NULL, 0x04, 546 "Payload Flow indication", HFILL } 547 }, 548 { &hf_btbredr_length, 549 { "Length", "btbredr.length", 550 FT_UINT8, BASE_DEC, NULL, 0xf8, 551 "Payload Length", HFILL } 552 }, 553 { &hf_btbredr_pldhdr, 554 { "Payload Header", "btbredr.pldhdr", 555 FT_NONE, BASE_NONE, NULL, 0x0, 556 NULL, HFILL } 557 }, 558 { &hf_btbredr_pldbody, 559 { "Payload Body", "btbredr.pldbody", 560 FT_BYTES, BASE_NONE, NULL, 0x0, 561 NULL, HFILL } 562 }, 563 { &hf_btbredr_crc, 564 { "CRC", "btbredr.crc", 565 FT_UINT16, BASE_HEX, NULL, 0x0, 566 "Payload CRC", HFILL } 567 }, 568 { &hf_btbredr_fhs_parity, 569 { "Parity", "btbredr.parity", 570 /* FIXME this doesn't work because bitmasks can only be 32 bits */ 571 FT_UINT64, BASE_HEX, NULL, /*0x00000003ffffffffULL,*/ 0x0, 572 "LAP parity", HFILL } 573 }, 574 { &hf_btbredr_fhs_lap, 575 { "LAP", "btbredr.lap", 576 FT_UINT24, BASE_HEX, NULL, 0x03fffffc, 577 "Lower Address Part", HFILL } 578 }, 579 { &hf_btbredr_fhs_eir, 580 { "EIR", "btbredr.eir", 581 FT_BOOLEAN, 8, NULL, 0x04, 582 "Extended Inquiry Response packet may follow", HFILL } 583 }, 584 { &hf_btbredr_fhs_sr, 585 { "SR", "btbredr.sr", 586 FT_UINT8, BASE_HEX, VALS(sr_modes), 0x30, 587 "Scan Repetition", HFILL } 588 }, 589 { &hf_btbredr_fhs_uap, 590 { "UAP", "btbredr.uap", 591 FT_UINT8, BASE_HEX, NULL, 0x0, 592 "Upper Address Part", HFILL } 593 }, 594 { &hf_btbredr_fhs_nap, 595 { "NAP", "btbredr.nap", 596 FT_UINT16, BASE_HEX, NULL, 0x0, 597 "Non-Significant Address Part", HFILL } 598 }, 599 { &hf_btbredr_fhs_class, /* FIXME break out further */ 600 { "Class of Device", "btbredr.class", 601 FT_UINT24, BASE_HEX, NULL, 0x0, 602 NULL, HFILL } 603 }, 604 { &hf_btbredr_fhs_ltaddr, 605 { "LT_ADDR", "btbredr.lt_addr", 606 FT_UINT8, BASE_HEX, NULL, 0x07, 607 "Logical Transport Address", HFILL } 608 }, 609 { &hf_btbredr_fhs_clk, 610 { "CLK", "btbredr.clk", 611 FT_UINT32, BASE_HEX, NULL, 0x1ffffff8, 612 "Clock bits 2 through 27", HFILL } 613 }, 614 { &hf_btbredr_fhs_psmode, 615 { "Page Scan Mode", "btbredr.psmode", 616 FT_UINT8, BASE_HEX, NULL, 0xe0, 617 NULL, HFILL } 618 }, 619 }; 620 621 /* protocol subtree arrays */ 622 static gint *ett[] = { 623 &ett_btbredr, 624 &ett_btbredr_meta, 625 &ett_btbredr_pkthdr, 626 &ett_btbredr_flags, 627 &ett_btbredr_payload, 628 &ett_btbredr_pldhdr, 629 }; 630 631 /* register the protocol name and description */ 632 proto_btbredr = proto_register_protocol( 633 "Bluetooth Baseband", /* full name */ 634 "BT Baseband", /* short name */ 635 "btbredr" /* abbreviation (e.g. for filters) */ 636 ); 637 638 /* register the header fields and subtrees used */ 639 proto_register_field_array(proto_btbredr, hf, array_length(hf)); 640 proto_register_subtree_array(ett, array_length(ett)); 641 } 642 643 /* Remove this once recent Wireshark/TCPdump releases are more common */ 644 #ifndef WTAP_ENCAP_BLUETOOTH_BREDR_BB 645 #define WTAP_ENCAP_BLUETOOTH_BREDR_BB 161 646 #endif 647 648 void 649 proto_reg_handoff_btbredr(void) 650 { 651 dissector_handle_t btbredr_handle; 652 btbredr_handle = new_create_dissector_handle(dissect_btbredr, 653 proto_btbredr); 654 dissector_add_uint("wtap_encap", 655 WTAP_ENCAP_BLUETOOTH_BREDR_BB, 656 btbredr_handle); 657 658 btlmp_handle = find_dissector("btlmp"); 659 btl2cap_handle = find_dissector("btl2cap"); 660 } 661 662 /* 663 * Editor modelines - http://www.wireshark.org/tools/modelines.html 664 * 665 * Local variables: 666 * c-basic-offset: 4 667 * tab-width: 8 668 * indent-tabs-mode: nil 669 * End: 670 * 671 * vi: set shiftwidth=4 tabstop=8 expandtab: 672 * :indentSize=4:tabSize=8:noTabs=true: 673 */ 674