1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "pbap_client.c" 39 40 #include "btstack_config.h" 41 42 #include <stdint.h> 43 #include <string.h> 44 45 #include "hci_cmd.h" 46 #include "btstack_run_loop.h" 47 #include "btstack_debug.h" 48 #include "hci.h" 49 #include "btstack_memory.h" 50 #include "hci_dump.h" 51 #include "l2cap.h" 52 #include "bluetooth_sdp.h" 53 #include "classic/sdp_client_rfcomm.h" 54 #include "btstack_event.h" 55 #include "md5.h" 56 #include "yxml.h" 57 58 #include "classic/obex.h" 59 #include "classic/obex_iterator.h" 60 #include "classic/goep_client.h" 61 #include "classic/pbap_client.h" 62 63 // 796135f0-f0c5-11d8-0966- 0800200c9a66 64 static const uint8_t pbap_uuid[] = { 0x79, 0x61, 0x35, 0xf0, 0xf0, 0xc5, 0x11, 0xd8, 0x09, 0x66, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66}; 65 66 const char * pbap_phonebook_type = "x-bt/phonebook"; 67 const char * pbap_vcard_listing_type = "x-bt/vcard-listing"; 68 const char * pbap_vcard_entry_type = "x-bt/vcard"; 69 70 const char * pbap_vcard_listing_name = "pb"; 71 72 static uint32_t pbap_supported_features = \ 73 PBAP_SUPPORTED_FEATURES_DOWNLOAD | 74 PBAP_SUPPORTED_FEATURES_BROWSING | 75 PBAP_SUPPORTED_FEATURES_DATABASE_IDENTIFIER | 76 PBAP_SUPPORTED_FEATURES_FOLDER_VERSION_COUNTERS | 77 PBAP_SUPPORTED_FEATURES_VCARD_SELECTING | 78 PBAP_SUPPORTED_FEATURES_ENHANCED_MISSED_CALLS | 79 PBAP_SUPPORTED_FEATURES_DEFAULT_CONTACT_IMAGE_FORMAT | 80 PBAP_SUPPORTED_FEATURES_X_BT_UCI_VCARD_PROPERTY | 81 PBAP_SUPPORTED_FEATURES_X_BT_UID_VCARD_PROPERTY | 82 PBAP_SUPPORTED_FEATURES_CONTACT_REFERENCING; 83 84 typedef enum { 85 PBAP_INIT = 0, 86 PBAP_W4_GOEP_CONNECTION, 87 PBAP_W2_SEND_CONNECT_REQUEST, 88 PBAP_W4_CONNECT_RESPONSE, 89 PBAP_W4_USER_AUTHENTICATION, 90 PBAP_W2_SEND_AUTHENTICATED_CONNECT, 91 PBAP_CONNECT_RESPONSE_RECEIVED, 92 PBAP_CONNECTED, 93 // 94 PBAP_W2_SEND_DISCONNECT_REQUEST, 95 PBAP_W4_DISCONNECT_RESPONSE, 96 // 97 PBAP_W2_PULL_PHONEBOOK, 98 PBAP_W4_PHONEBOOK, 99 PBAP_W2_SET_PATH_ROOT, 100 PBAP_W4_SET_PATH_ROOT_COMPLETE, 101 PBAP_W2_SET_PATH_ELEMENT, 102 PBAP_W4_SET_PATH_ELEMENT_COMPLETE, 103 PBAP_W2_GET_PHONEBOOK_SIZE, 104 PBAP_W4_GET_PHONEBOOK_SIZE_COMPLETE, 105 // - pull vacard liast 106 PBAP_W2_GET_CARD_LIST, 107 PBAP_W4_GET_CARD_LIST_COMPLETE, 108 // - pull vcard entry 109 PBAP_W2_GET_CARD_ENTRY, 110 PBAP_W4_GET_CARD_ENTRY_COMPLETE 111 112 } pbap_state_t; 113 114 typedef enum { 115 SRM_DISABLED, 116 SRM_W4_CONFIRM, 117 SRM_ENABLED_BUT_WAITING, 118 SRM_ENABLED 119 } srm_state_t; 120 121 typedef struct pbap_client { 122 pbap_state_t state; 123 uint16_t cid; 124 bd_addr_t bd_addr; 125 hci_con_handle_t con_handle; 126 uint8_t incoming; 127 uint16_t goep_cid; 128 btstack_packet_handler_t client_handler; 129 int request_number; 130 srm_state_t srm_state; 131 const char * current_folder; 132 const char * phone_number; 133 const char * phonebook_path; 134 const char * vcard_name; 135 uint16_t set_path_offset; 136 /* vcard selector / operator */ 137 uint32_t vcard_selector; 138 uint8_t vcard_selector_operator; 139 uint8_t vcard_selector_supported; 140 /* abort */ 141 uint8_t abort_operation; 142 /* authentication */ 143 uint8_t authentication_options; 144 uint16_t authentication_nonce[16]; 145 const char * authentication_password; 146 /* xml parser */ 147 yxml_t xml_parser; 148 uint8_t xml_buffer[50]; 149 /* flow control mode */ 150 uint8_t flow_control_enabled; 151 uint8_t flow_next_triggered; 152 } pbap_client_t; 153 154 static pbap_client_t _pbap_client; 155 static pbap_client_t * pbap_client = &_pbap_client; 156 157 static void pbap_client_emit_connected_event(pbap_client_t * context, uint8_t status){ 158 uint8_t event[15]; 159 int pos = 0; 160 event[pos++] = HCI_EVENT_PBAP_META; 161 pos++; // skip len 162 event[pos++] = PBAP_SUBEVENT_CONNECTION_OPENED; 163 little_endian_store_16(event,pos,context->cid); 164 pos+=2; 165 event[pos++] = status; 166 (void)memcpy(&event[pos], context->bd_addr, 6); 167 pos += 6; 168 little_endian_store_16(event,pos,context->con_handle); 169 pos += 2; 170 event[pos++] = context->incoming; 171 event[1] = pos - 2; 172 if (pos != sizeof(event)) log_error("goep_client_emit_connected_event size %u", pos); 173 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 174 } 175 176 static void pbap_client_emit_connection_closed_event(pbap_client_t * context){ 177 uint8_t event[5]; 178 int pos = 0; 179 event[pos++] = HCI_EVENT_PBAP_META; 180 pos++; // skip len 181 event[pos++] = PBAP_SUBEVENT_CONNECTION_CLOSED; 182 little_endian_store_16(event,pos,context->cid); 183 pos+=2; 184 event[1] = pos - 2; 185 if (pos != sizeof(event)) log_error("pbap_client_emit_connection_closed_event size %u", pos); 186 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 187 } 188 189 static void pbap_client_emit_operation_complete_event(pbap_client_t * context, uint8_t status){ 190 uint8_t event[6]; 191 int pos = 0; 192 event[pos++] = HCI_EVENT_PBAP_META; 193 pos++; // skip len 194 event[pos++] = PBAP_SUBEVENT_OPERATION_COMPLETED; 195 little_endian_store_16(event,pos,context->cid); 196 pos+=2; 197 event[pos++]= status; 198 event[1] = pos - 2; 199 if (pos != sizeof(event)) log_error("pbap_client_emit_can_send_now_event size %u", pos); 200 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 201 } 202 203 static void pbap_client_emit_phonebook_size_event(pbap_client_t * context, uint8_t status, uint16_t phonebook_size){ 204 uint8_t event[8]; 205 int pos = 0; 206 event[pos++] = HCI_EVENT_PBAP_META; 207 pos++; // skip len 208 event[pos++] = PBAP_SUBEVENT_PHONEBOOK_SIZE; 209 little_endian_store_16(event,pos,context->cid); 210 pos+=2; 211 event[pos++] = status; 212 little_endian_store_16(event,pos, phonebook_size); 213 pos+=2; 214 event[1] = pos - 2; 215 if (pos != sizeof(event)) log_error("pbap_client_emit_phonebook_size_event size %u", pos); 216 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 217 } 218 219 static void pbap_client_emit_authentication_event(pbap_client_t * context, uint8_t options){ 220 // split options 221 uint8_t user_id_required = (options & 1) ? 1 : 0; 222 uint8_t full_access = (options & 2) ? 1 : 0; 223 224 uint8_t event[7]; 225 int pos = 0; 226 event[pos++] = HCI_EVENT_PBAP_META; 227 pos++; // skip len 228 event[pos++] = PBAP_SUBEVENT_AUTHENTICATION_REQUEST; 229 little_endian_store_16(event,pos,context->cid); 230 pos+=2; 231 event[pos++] = user_id_required; 232 event[pos++] = full_access; 233 if (pos != sizeof(event)) log_error("pbap_client_emit_authentication_event size %u", pos); 234 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 235 } 236 237 static void pbap_client_emit_card_result_event(pbap_client_t * context, const char * name, const char * handle){ 238 uint8_t event[5 + PBAP_MAX_NAME_LEN + PBAP_MAX_HANDLE_LEN]; 239 int pos = 0; 240 event[pos++] = HCI_EVENT_PBAP_META; 241 pos++; // skip len 242 event[pos++] = PBAP_SUBEVENT_CARD_RESULT; 243 little_endian_store_16(event,pos,context->cid); 244 pos+=2; 245 int name_len = btstack_min(PBAP_MAX_NAME_LEN, strlen(name)); 246 event[pos++] = name_len; 247 (void)memcpy(&event[pos], name, name_len); 248 pos += name_len; 249 int handle_len = btstack_min(PBAP_MAX_HANDLE_LEN, strlen(handle)); 250 event[pos++] = handle_len; 251 (void)memcpy(&event[pos], handle, handle_len); 252 pos += handle_len; 253 event[1] = pos - 2; 254 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 255 } 256 257 static const uint8_t collon = (uint8_t) ':'; 258 259 static void pbap_handle_can_send_now(void){ 260 uint8_t path_element[20]; 261 uint16_t path_element_start; 262 uint16_t path_element_len; 263 uint8_t application_parameters[PBAP_MAX_PHONE_NUMBER_LEN + 10]; 264 uint8_t challenge_response[36]; 265 int i; 266 uint16_t phone_number_len; 267 268 MD5_CTX md5_ctx; 269 270 if (pbap_client->abort_operation){ 271 pbap_client->abort_operation = 0; 272 pbap_client->state = PBAP_CONNECTED; 273 goep_client_request_create_abort(pbap_client->goep_cid); 274 goep_client_execute(pbap_client->goep_cid); 275 return; 276 } 277 278 switch (pbap_client->state){ 279 case PBAP_W2_SEND_CONNECT_REQUEST: 280 goep_client_request_create_connect(pbap_client->goep_cid, OBEX_VERSION, 0, OBEX_MAX_PACKETLEN_DEFAULT); 281 goep_client_header_add_target(pbap_client->goep_cid, pbap_uuid, 16); 282 // Mandatory if the PSE advertises a PbapSupportedFeatures attribute in its SDP record, else excluded. 283 if (goep_client_get_pbap_supported_features(pbap_client->goep_cid) != PBAP_FEATURES_NOT_PRESENT){ 284 application_parameters[0] = PBAP_APPLICATION_PARAMETER_PBAP_SUPPORTED_FEATURES; 285 application_parameters[1] = 4; 286 big_endian_store_32(application_parameters, 2, pbap_supported_features); 287 goep_client_header_add_application_parameters(pbap_client->goep_cid, &application_parameters[0], 6); 288 } 289 pbap_client->state = PBAP_W4_CONNECT_RESPONSE; 290 goep_client_execute(pbap_client->goep_cid); 291 break; 292 case PBAP_W2_SEND_AUTHENTICATED_CONNECT: 293 goep_client_request_create_connect(pbap_client->goep_cid, OBEX_VERSION, 0, OBEX_MAX_PACKETLEN_DEFAULT); 294 goep_client_header_add_target(pbap_client->goep_cid, pbap_uuid, 16); 295 // setup authentication challenge response 296 i = 0; 297 challenge_response[i++] = 0; // Tag Digest 298 challenge_response[i++] = 16; // Len 299 // calculate md5 300 MD5_Init(&md5_ctx); 301 MD5_Update(&md5_ctx, pbap_client->authentication_nonce, 16); 302 MD5_Update(&md5_ctx, &collon, 1); 303 MD5_Update(&md5_ctx, pbap_client->authentication_password, strlen(pbap_client->authentication_password)); 304 MD5_Final(&challenge_response[i], &md5_ctx); 305 i += 16; 306 challenge_response[i++] = 2; // Tag Nonce 307 challenge_response[i++] = 16; // Len 308 (void)memcpy(&challenge_response[i], 309 pbap_client->authentication_nonce, 16); 310 i += 16; 311 goep_client_header_add_challenge_response(pbap_client->goep_cid, challenge_response, i); 312 pbap_client->state = PBAP_W4_CONNECT_RESPONSE; 313 goep_client_execute(pbap_client->goep_cid); 314 break; 315 case PBAP_W2_SEND_DISCONNECT_REQUEST: 316 goep_client_request_create_disconnect(pbap_client->goep_cid); 317 pbap_client->state = PBAP_W4_DISCONNECT_RESPONSE; 318 goep_client_execute(pbap_client->goep_cid); 319 return; 320 case PBAP_W2_PULL_PHONEBOOK: 321 case PBAP_W2_GET_PHONEBOOK_SIZE: 322 goep_client_request_create_get(pbap_client->goep_cid); 323 if (pbap_client->request_number == 0){ 324 if (!pbap_client->flow_control_enabled){ 325 goep_client_header_add_srm_enable(pbap_client->goep_cid); 326 pbap_client->srm_state = SRM_W4_CONFIRM; 327 } 328 goep_client_header_add_name(pbap_client->goep_cid, pbap_client->phonebook_path); 329 goep_client_header_add_type(pbap_client->goep_cid, pbap_phonebook_type); 330 i = 0; 331 if (pbap_client->vcard_selector_supported){ 332 // vCard Selector 333 if (pbap_client->vcard_selector){ 334 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_VCARD_SELECTOR; 335 application_parameters[i++] = 8; 336 memset(&application_parameters[i], 0, 4); 337 i += 4; 338 big_endian_store_32(application_parameters, i, pbap_client->vcard_selector); 339 i += 4; 340 } 341 // vCard Selector Operator 342 if (pbap_client->vcard_selector_operator != PBAP_VCARD_SELECTOR_OPERATOR_OR){ 343 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_VCARD_SELECTOR_OPERATOR; 344 application_parameters[i++] = 1; 345 application_parameters[i++] = pbap_client->vcard_selector_operator; 346 } 347 } 348 if (pbap_client->state == PBAP_W2_GET_PHONEBOOK_SIZE){ 349 // Regular TLV wih 1-byte len 350 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_MAX_LIST_COUNT; 351 application_parameters[i++] = 2; 352 big_endian_store_16(application_parameters, 2, 0); 353 i += 2; 354 } 355 if (i){ 356 goep_client_header_add_application_parameters(pbap_client->goep_cid, application_parameters, i); 357 } 358 } 359 if (pbap_client->state == PBAP_W2_GET_PHONEBOOK_SIZE){ 360 // state 361 pbap_client->state = PBAP_W4_GET_PHONEBOOK_SIZE_COMPLETE; 362 } else { 363 // state 364 pbap_client->state = PBAP_W4_PHONEBOOK; 365 } 366 // send packet 367 pbap_client->request_number++; 368 goep_client_execute(pbap_client->goep_cid); 369 break; 370 case PBAP_W2_GET_CARD_LIST: 371 goep_client_request_create_get(pbap_client->goep_cid); 372 if (pbap_client->request_number == 0){ 373 if (!pbap_client->flow_control_enabled){ 374 goep_client_header_add_srm_enable(pbap_client->goep_cid); 375 pbap_client->srm_state = SRM_W4_CONFIRM; 376 } 377 goep_client_header_add_name(pbap_client->goep_cid, pbap_client->phonebook_path); 378 goep_client_header_add_type(pbap_client->goep_cid, pbap_vcard_listing_type); 379 i = 0; 380 if (pbap_client->vcard_selector_supported){ 381 // vCard Selector 382 if (pbap_client->vcard_selector){ 383 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_VCARD_SELECTOR; 384 application_parameters[i++] = 8; 385 memset(&application_parameters[i], 0, 4); 386 i += 4; 387 big_endian_store_32(application_parameters, i, pbap_client->vcard_selector); 388 i += 4; 389 } 390 // vCard Selector Operator 391 if (pbap_client->vcard_selector_operator != PBAP_VCARD_SELECTOR_OPERATOR_OR){ 392 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_VCARD_SELECTOR_OPERATOR; 393 application_parameters[i++] = 1; 394 application_parameters[i++] = pbap_client->vcard_selector_operator; 395 } 396 } 397 if (pbap_client->phone_number){ 398 // Search by phpone number 399 phone_number_len = btstack_min(PBAP_MAX_PHONE_NUMBER_LEN, strlen(pbap_client->phone_number)); 400 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_SEARCH_VALUE; 401 application_parameters[i++] = phone_number_len; 402 (void)memcpy(&application_parameters[i], 403 pbap_client->phone_number, phone_number_len); 404 i += phone_number_len; 405 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_SEARCH_PROPERTY; 406 application_parameters[i++] = 1; 407 application_parameters[i++] = 0x01; // Number 408 } 409 if (i){ 410 goep_client_header_add_application_parameters(pbap_client->goep_cid, &application_parameters[0], i); 411 } 412 } 413 // send packet 414 pbap_client->state = PBAP_W4_GET_CARD_LIST_COMPLETE; 415 pbap_client->request_number++; 416 goep_client_execute(pbap_client->goep_cid); 417 break; 418 case PBAP_W2_GET_CARD_ENTRY: 419 goep_client_request_create_get(pbap_client->goep_cid); 420 if (pbap_client->request_number == 0){ 421 if (!pbap_client->flow_control_enabled){ 422 goep_client_header_add_srm_enable(pbap_client->goep_cid); 423 pbap_client->srm_state = SRM_W4_CONFIRM; 424 } 425 goep_client_header_add_name(pbap_client->goep_cid, pbap_client->vcard_name); 426 goep_client_header_add_type(pbap_client->goep_cid, pbap_vcard_entry_type); 427 i = 0; 428 if (i){ 429 // TODO: support property selector 430 // TODO: support format 431 goep_client_header_add_application_parameters(pbap_client->goep_cid, &application_parameters[0], i); 432 } 433 pbap_client->state = PBAP_W4_GET_CARD_ENTRY_COMPLETE; 434 } 435 // send packet 436 pbap_client->request_number++; 437 goep_client_execute(pbap_client->goep_cid); 438 break; 439 case PBAP_W2_SET_PATH_ROOT: 440 goep_client_request_create_set_path(pbap_client->goep_cid, 1 << 1); // Don’t create directory 441 goep_client_header_add_name(pbap_client->goep_cid, ""); 442 // state 443 pbap_client->state = PBAP_W4_SET_PATH_ROOT_COMPLETE; 444 // send packet 445 goep_client_execute(pbap_client->goep_cid); 446 break; 447 case PBAP_W2_SET_PATH_ELEMENT: 448 // find '/' or '\0' 449 path_element_start = pbap_client->set_path_offset; 450 while ((pbap_client->current_folder[pbap_client->set_path_offset] != '\0') && 451 (pbap_client->current_folder[pbap_client->set_path_offset] != '/')){ 452 pbap_client->set_path_offset++; 453 } 454 path_element_len = pbap_client->set_path_offset-path_element_start; 455 (void)memcpy(path_element, 456 &pbap_client->current_folder[path_element_start], 457 path_element_len); 458 path_element[path_element_len] = 0; 459 460 // skip / 461 if (pbap_client->current_folder[pbap_client->set_path_offset] == '/'){ 462 pbap_client->set_path_offset++; 463 } 464 465 // status 466 log_info("Path element '%s'", path_element); 467 468 goep_client_request_create_set_path(pbap_client->goep_cid, 1 << 1); // Don’t create directory 469 goep_client_header_add_name(pbap_client->goep_cid, (const char *) path_element); // next element 470 // state 471 pbap_client->state = PBAP_W4_SET_PATH_ELEMENT_COMPLETE; 472 // send packet 473 goep_client_execute(pbap_client->goep_cid); 474 break; 475 default: 476 break; 477 } 478 } 479 480 static void pbap_parse_authentication_challenge(pbap_client_t * context, const uint8_t * challenge_data, uint16_t challenge_len){ 481 int i; 482 483 for (i=0 ; i<challenge_len ; ){ 484 int tag = challenge_data[i]; 485 int len = challenge_data[i + 1]; 486 i += 2; 487 switch (tag) { 488 case 0: 489 if (len != 0x10) { 490 log_error("Invalid OBEX digest len %u", len); 491 return; 492 } 493 (void)memcpy(context->authentication_nonce, &challenge_data[i], 16); 494 break; 495 case 1: 496 context->authentication_options = challenge_data[i]; 497 break; 498 case 2: 499 // TODO: handle charset 500 // charset_code = challenge_data[i]; 501 break; 502 default: 503 break; 504 } 505 i += len; 506 } 507 } 508 509 static void pbap_process_srm_headers(pbap_client_t * context, uint8_t *packet, uint16_t size){ 510 511 if (packet[0] != OBEX_RESP_CONTINUE) return; 512 513 // get SRM and SRMP Headers 514 int srm_value = OBEX_SRM_DISABLE; 515 int srmp_value = OBEX_SRMP_NEXT; 516 obex_iterator_t it; 517 for (obex_iterator_init_with_response_packet(&it, goep_client_get_request_opcode(context->goep_cid), packet, size); obex_iterator_has_more(&it) ; obex_iterator_next(&it)){ 518 uint8_t hi = obex_iterator_get_hi(&it); 519 uint16_t data_len = obex_iterator_get_data_len(&it); 520 const uint8_t * data = obex_iterator_get_data(&it); 521 switch (hi){ 522 case OBEX_HEADER_SINGLE_RESPONSE_MODE: 523 if (data_len != 1) break; 524 srm_value = *data; 525 break; 526 case OBEX_HEADER_SINGLE_RESPONSE_MODE_PARAMETER: 527 if (data_len != 1) break; 528 srmp_value = *data; 529 break; 530 default: 531 break; 532 } 533 } 534 535 // Update SRM state based on SRM haders 536 switch (context->srm_state){ 537 case SRM_W4_CONFIRM: 538 switch (srm_value){ 539 case OBEX_SRM_ENABLE: 540 switch (srmp_value){ 541 case OBEX_SRMP_WAIT: 542 context->srm_state = SRM_ENABLED_BUT_WAITING; 543 break; 544 default: 545 context->srm_state = SRM_ENABLED; 546 break; 547 } 548 break; 549 default: 550 context->srm_state = SRM_DISABLED; 551 break; 552 } 553 break; 554 case SRM_ENABLED_BUT_WAITING: 555 switch (srmp_value){ 556 case OBEX_SRMP_WAIT: 557 context->srm_state = SRM_ENABLED_BUT_WAITING; 558 break; 559 default: 560 context->srm_state = SRM_ENABLED; 561 break; 562 } 563 break; 564 default: 565 break; 566 } 567 log_info("SRM state %u", context->srm_state); 568 } 569 570 static void pbap_client_process_vcard_listing(uint8_t *packet, uint16_t size){ 571 obex_iterator_t it; 572 for (obex_iterator_init_with_response_packet(&it, goep_client_get_request_opcode(pbap_client->goep_cid), packet, size); obex_iterator_has_more(&it) ; obex_iterator_next(&it)){ 573 uint8_t hi = obex_iterator_get_hi(&it); 574 if ((hi == OBEX_HEADER_END_OF_BODY) || 575 (hi == OBEX_HEADER_BODY)){ 576 uint16_t data_len = obex_iterator_get_data_len(&it); 577 const uint8_t * data = obex_iterator_get_data(&it); 578 // now try parsing it 579 yxml_init(&pbap_client->xml_parser, pbap_client->xml_buffer, sizeof(pbap_client->xml_buffer)); 580 int card_found = 0; 581 int name_found = 0; 582 int handle_found = 0; 583 char name[PBAP_MAX_NAME_LEN]; 584 char handle[PBAP_MAX_HANDLE_LEN]; 585 uint16_t char_len; 586 while (data_len--){ 587 yxml_ret_t r = yxml_parse(&pbap_client->xml_parser, *data++); 588 switch (r){ 589 case YXML_ELEMSTART: 590 card_found = strcmp("card", pbap_client->xml_parser.elem) == 0; 591 break; 592 case YXML_ELEMEND: 593 if (card_found){ 594 pbap_client_emit_card_result_event(pbap_client, name, handle); 595 } 596 card_found = 0; 597 break; 598 case YXML_ATTRSTART: 599 if (!card_found) break; 600 if (strcmp("name", pbap_client->xml_parser.attr) == 0){ 601 name_found = 1; 602 name[0] = 0; 603 break; 604 } 605 if (strcmp("handle", pbap_client->xml_parser.attr) == 0){ 606 handle_found = 1; 607 handle[0] = 0; 608 break; 609 } 610 break; 611 case YXML_ATTRVAL: 612 if (name_found) { 613 // "In UTF-8, characters from the U+0000..U+10FFFF range (the UTF-16 accessible range) are encoded using sequences of 1 to 4 octets." 614 char_len = strlen(pbap_client->xml_parser.data); 615 if ((strlen(name) + char_len + 1) >= sizeof(name)) break; 616 strcat(name, pbap_client->xml_parser.data); 617 break; 618 } 619 if (handle_found) { 620 // "In UTF-8, characters from the U+0000..U+10FFFF range (the UTF-16 accessible range) are encoded using sequences of 1 to 4 octets." 621 char_len = strlen(pbap_client->xml_parser.data); 622 if ((strlen(handle) + char_len + 1) >= sizeof(handle)) break; 623 strcat(handle, pbap_client->xml_parser.data); 624 break; 625 } 626 break; 627 case YXML_ATTREND: 628 name_found = 0; 629 handle_found = 0; 630 break; 631 default: 632 break; 633 } 634 } 635 } 636 } 637 } 638 static void pbap_packet_handler_hci(uint8_t *packet, uint16_t size){ 639 UNUSED(size); 640 uint8_t status; 641 switch (hci_event_packet_get_type(packet)) { 642 case HCI_EVENT_GOEP_META: 643 switch (hci_event_goep_meta_get_subevent_code(packet)){ 644 case GOEP_SUBEVENT_CONNECTION_OPENED: 645 status = goep_subevent_connection_opened_get_status(packet); 646 pbap_client->con_handle = goep_subevent_connection_opened_get_con_handle(packet); 647 pbap_client->incoming = goep_subevent_connection_opened_get_incoming(packet); 648 goep_subevent_connection_opened_get_bd_addr(packet, pbap_client->bd_addr); 649 if (status){ 650 log_info("pbap: connection failed %u", status); 651 pbap_client->state = PBAP_INIT; 652 pbap_client_emit_connected_event(pbap_client, status); 653 } else { 654 log_info("pbap: connection established"); 655 pbap_client->goep_cid = goep_subevent_connection_opened_get_goep_cid(packet); 656 pbap_client->state = PBAP_W2_SEND_CONNECT_REQUEST; 657 goep_client_request_can_send_now(pbap_client->goep_cid); 658 } 659 break; 660 case GOEP_SUBEVENT_CONNECTION_CLOSED: 661 if (pbap_client->state != PBAP_CONNECTED){ 662 pbap_client_emit_operation_complete_event(pbap_client, OBEX_DISCONNECTED); 663 } 664 pbap_client->state = PBAP_INIT; 665 pbap_client_emit_connection_closed_event(pbap_client); 666 break; 667 case GOEP_SUBEVENT_CAN_SEND_NOW: 668 pbap_handle_can_send_now(); 669 break; 670 default: 671 break; 672 } 673 break; 674 default: 675 break; 676 } 677 } 678 679 static void pbap_packet_handler_goep(uint8_t *packet, uint16_t size){ 680 obex_iterator_t it; 681 int wait_for_user = 0; 682 683 // TODO: handle chunked data 684 switch (pbap_client->state){ 685 case PBAP_W4_CONNECT_RESPONSE: 686 switch (packet[0]){ 687 case OBEX_RESP_SUCCESS: 688 for (obex_iterator_init_with_response_packet(&it, goep_client_get_request_opcode(pbap_client->goep_cid), packet, size); obex_iterator_has_more(&it) ; obex_iterator_next(&it)){ 689 uint8_t hi = obex_iterator_get_hi(&it); 690 if (hi == OBEX_HEADER_CONNECTION_ID){ 691 goep_client_set_connection_id(pbap_client->goep_cid, obex_iterator_get_data_32(&it)); 692 } 693 } 694 pbap_client->state = PBAP_CONNECTED; 695 pbap_client->vcard_selector_supported = pbap_supported_features & goep_client_get_pbap_supported_features(pbap_client->goep_cid) & PBAP_SUPPORTED_FEATURES_VCARD_SELECTING; 696 pbap_client_emit_connected_event(pbap_client, 0); 697 break; 698 case OBEX_RESP_UNAUTHORIZED: 699 for (obex_iterator_init_with_response_packet(&it, goep_client_get_request_opcode(pbap_client->goep_cid), packet, size); obex_iterator_has_more(&it) ; obex_iterator_next(&it)){ 700 uint8_t hi = obex_iterator_get_hi(&it); 701 if (hi == OBEX_HEADER_AUTHENTICATION_CHALLENGE){ 702 pbap_parse_authentication_challenge(pbap_client, obex_iterator_get_data(&it), obex_iterator_get_data_len(&it)); 703 } 704 } 705 pbap_client->state = PBAP_W4_USER_AUTHENTICATION; 706 pbap_client_emit_authentication_event(pbap_client, pbap_client->authentication_options); 707 break; 708 default: 709 log_info("pbap: obex connect failed, result 0x%02x", packet[0]); 710 pbap_client->state = PBAP_INIT; 711 pbap_client_emit_connected_event(pbap_client, OBEX_CONNECT_FAILED); 712 break; 713 } 714 break; 715 case PBAP_W4_DISCONNECT_RESPONSE: 716 goep_client_disconnect(pbap_client->goep_cid); 717 break; 718 case PBAP_W4_SET_PATH_ROOT_COMPLETE: 719 case PBAP_W4_SET_PATH_ELEMENT_COMPLETE: 720 if (packet[0] == OBEX_RESP_SUCCESS){ 721 // more path? 722 if (pbap_client->current_folder[pbap_client->set_path_offset]){ 723 pbap_client->state = PBAP_W2_SET_PATH_ELEMENT; 724 goep_client_request_can_send_now(pbap_client->goep_cid); 725 } else { 726 pbap_client->current_folder = NULL; 727 pbap_client->state = PBAP_CONNECTED; 728 pbap_client_emit_operation_complete_event(pbap_client, 0); 729 } 730 } else if (packet[0] == OBEX_RESP_NOT_FOUND){ 731 pbap_client->state = PBAP_CONNECTED; 732 pbap_client_emit_operation_complete_event(pbap_client, OBEX_NOT_FOUND); 733 } else { 734 pbap_client->state = PBAP_CONNECTED; 735 pbap_client_emit_operation_complete_event(pbap_client, OBEX_UNKNOWN_ERROR); 736 } 737 break; 738 case PBAP_W4_PHONEBOOK: 739 pbap_client->flow_next_triggered = 0; 740 wait_for_user = 0; 741 for (obex_iterator_init_with_response_packet(&it, goep_client_get_request_opcode(pbap_client->goep_cid), packet, size); obex_iterator_has_more(&it) ; obex_iterator_next(&it)){ 742 uint8_t hi = obex_iterator_get_hi(&it); 743 uint16_t data_len = obex_iterator_get_data_len(&it); 744 const uint8_t * data = obex_iterator_get_data(&it); 745 switch (hi){ 746 case OBEX_HEADER_BODY: 747 case OBEX_HEADER_END_OF_BODY: 748 pbap_client->client_handler(PBAP_DATA_PACKET, pbap_client->cid, (uint8_t *) data, data_len); 749 wait_for_user++; 750 if (wait_for_user > 1){ 751 log_error("wait_for_user %u", wait_for_user); 752 } 753 break; 754 default: 755 break; 756 } 757 } 758 switch(packet[0]){ 759 case OBEX_RESP_CONTINUE: 760 pbap_process_srm_headers(pbap_client, packet, size); 761 if (pbap_client->srm_state == SRM_ENABLED) break; 762 pbap_client->state = PBAP_W2_PULL_PHONEBOOK; 763 if (!pbap_client->flow_control_enabled || !wait_for_user || pbap_client->flow_next_triggered) { 764 goep_client_request_can_send_now(pbap_client->goep_cid); 765 } 766 break; 767 case OBEX_RESP_SUCCESS: 768 pbap_client->state = PBAP_CONNECTED; 769 pbap_client_emit_operation_complete_event(pbap_client, 0); 770 break; 771 default: 772 log_info("unexpected response 0x%02x", packet[0]); 773 pbap_client->state = PBAP_CONNECTED; 774 pbap_client_emit_operation_complete_event(pbap_client, OBEX_UNKNOWN_ERROR); 775 break; 776 } 777 break; 778 case PBAP_W4_GET_PHONEBOOK_SIZE_COMPLETE: 779 pbap_client->state = PBAP_CONNECTED; 780 if (packet[0] == OBEX_RESP_SUCCESS){ 781 int have_size = 0; 782 uint16_t phonebook_size; 783 for (obex_iterator_init_with_response_packet(&it, goep_client_get_request_opcode(pbap_client->goep_cid), packet, size); obex_iterator_has_more(&it) ; obex_iterator_next(&it)){ 784 uint8_t hi = obex_iterator_get_hi(&it); 785 if (hi == OBEX_HEADER_APPLICATION_PARAMETERS){ 786 uint16_t data_len = obex_iterator_get_data_len(&it); 787 const uint8_t * data = obex_iterator_get_data(&it); 788 // iterate over application headers (TLV with 1 bytes len) 789 unsigned int i = 0; 790 while (i<data_len){ 791 uint8_t tag = data[i++]; 792 uint8_t len = data[i++]; 793 if ((tag == PBAP_APPLICATION_PARAMETER_PHONEBOOK_SIZE) && (len == 2)){ 794 have_size = 1; 795 phonebook_size = big_endian_read_16(data, i); 796 } 797 i+=len; 798 } 799 } 800 } 801 if (have_size){ 802 pbap_client_emit_phonebook_size_event(pbap_client, 0, phonebook_size); 803 break; 804 } 805 } 806 pbap_client_emit_phonebook_size_event(pbap_client, OBEX_UNKNOWN_ERROR, 0); 807 break; 808 case PBAP_W4_GET_CARD_LIST_COMPLETE: 809 switch (packet[0]){ 810 case OBEX_RESP_CONTINUE: 811 // process data 812 pbap_client_process_vcard_listing(packet, size); 813 // handle continue 814 pbap_process_srm_headers(pbap_client, packet, size); 815 if (pbap_client->srm_state == SRM_ENABLED) break; 816 pbap_client->state = PBAP_W2_GET_CARD_LIST; 817 if (!pbap_client->flow_control_enabled || !wait_for_user || pbap_client->flow_next_triggered) { 818 goep_client_request_can_send_now(pbap_client->goep_cid); 819 } 820 break; 821 case OBEX_RESP_SUCCESS: 822 // process data 823 pbap_client_process_vcard_listing(packet, size); 824 // done 825 pbap_client->state = PBAP_CONNECTED; 826 pbap_client_emit_operation_complete_event(pbap_client, 0); 827 break; 828 case OBEX_RESP_NOT_ACCEPTABLE: 829 pbap_client->state = PBAP_CONNECTED; 830 pbap_client_emit_operation_complete_event(pbap_client, OBEX_NOT_ACCEPTABLE); 831 break; 832 default: 833 log_info("unexpected response 0x%02x", packet[0]); 834 pbap_client->state = PBAP_CONNECTED; 835 pbap_client_emit_operation_complete_event(pbap_client, OBEX_UNKNOWN_ERROR); 836 break; 837 } 838 break; 839 case PBAP_W4_GET_CARD_ENTRY_COMPLETE: 840 switch (packet[0]){ 841 case OBEX_RESP_CONTINUE: 842 pbap_process_srm_headers(pbap_client, packet, size); 843 if (pbap_client->srm_state == SRM_ENABLED) break; 844 pbap_client->state = PBAP_W2_GET_CARD_ENTRY; 845 if (!pbap_client->flow_control_enabled || !wait_for_user || pbap_client->flow_next_triggered) { 846 goep_client_request_can_send_now(pbap_client->goep_cid); 847 } 848 break; 849 case OBEX_RESP_SUCCESS: 850 for (obex_iterator_init_with_response_packet(&it, goep_client_get_request_opcode(pbap_client->goep_cid), packet, size); obex_iterator_has_more(&it) ; obex_iterator_next(&it)){ 851 uint8_t hi = obex_iterator_get_hi(&it); 852 if ((hi == OBEX_HEADER_END_OF_BODY) || 853 (hi == OBEX_HEADER_BODY)){ 854 // uint16_t data_len = obex_iterator_get_data_len(&it); 855 // const uint8_t * data = obex_iterator_get_data(&it); 856 // now try parsing it 857 } 858 } 859 pbap_client->state = PBAP_CONNECTED; 860 pbap_client_emit_operation_complete_event(pbap_client, 0); 861 break; 862 case OBEX_RESP_NOT_ACCEPTABLE: 863 pbap_client->state = PBAP_CONNECTED; 864 pbap_client_emit_operation_complete_event(pbap_client, OBEX_NOT_ACCEPTABLE); 865 break; 866 default: 867 log_info("unexpected response 0x%02x", packet[0]); 868 pbap_client->state = PBAP_CONNECTED; 869 pbap_client_emit_operation_complete_event(pbap_client, OBEX_UNKNOWN_ERROR); 870 break; 871 } 872 break; 873 default: 874 break; 875 } 876 } 877 878 static void pbap_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 879 UNUSED(channel); // ok: there is no channel 880 UNUSED(size); // ok: handling own geop events 881 882 switch (packet_type){ 883 case HCI_EVENT_PACKET: 884 pbap_packet_handler_hci(packet, size); 885 break; 886 case GOEP_DATA_PACKET: 887 pbap_packet_handler_goep(packet, size); 888 break; 889 default: 890 break; 891 } 892 } 893 894 void pbap_client_init(void){ 895 memset(pbap_client, 0, sizeof(pbap_client_t)); 896 pbap_client->state = PBAP_INIT; 897 pbap_client->cid = 1; 898 } 899 900 void pbap_client_deinit(void){ 901 } 902 903 uint8_t pbap_connect(btstack_packet_handler_t handler, bd_addr_t addr, uint16_t * out_cid){ 904 if (pbap_client->state != PBAP_INIT) return BTSTACK_MEMORY_ALLOC_FAILED; 905 906 pbap_client->state = PBAP_W4_GOEP_CONNECTION; 907 pbap_client->client_handler = handler; 908 pbap_client->vcard_selector = 0; 909 pbap_client->vcard_selector_operator = PBAP_VCARD_SELECTOR_OPERATOR_OR; 910 911 uint8_t err = goep_client_create_connection(&pbap_packet_handler, addr, BLUETOOTH_SERVICE_CLASS_PHONEBOOK_ACCESS_PSE, &pbap_client->goep_cid); 912 *out_cid = pbap_client->cid; 913 if (err) return err; 914 return 0; 915 } 916 917 uint8_t pbap_disconnect(uint16_t pbap_cid){ 918 UNUSED(pbap_cid); 919 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 920 pbap_client->state = PBAP_W2_SEND_DISCONNECT_REQUEST; 921 goep_client_request_can_send_now(pbap_client->goep_cid); 922 return 0; 923 } 924 925 uint8_t pbap_get_phonebook_size(uint16_t pbap_cid, const char * path){ 926 UNUSED(pbap_cid); 927 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 928 pbap_client->state = PBAP_W2_GET_PHONEBOOK_SIZE; 929 pbap_client->phonebook_path = path; 930 pbap_client->request_number = 0; 931 goep_client_request_can_send_now(pbap_client->goep_cid); 932 return 0; 933 } 934 935 uint8_t pbap_pull_phonebook(uint16_t pbap_cid, const char * path){ 936 UNUSED(pbap_cid); 937 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 938 pbap_client->state = PBAP_W2_PULL_PHONEBOOK; 939 pbap_client->phonebook_path = path; 940 pbap_client->request_number = 0; 941 goep_client_request_can_send_now(pbap_client->goep_cid); 942 return 0; 943 } 944 945 uint8_t pbap_set_phonebook(uint16_t pbap_cid, const char * path){ 946 UNUSED(pbap_cid); 947 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 948 pbap_client->state = PBAP_W2_SET_PATH_ROOT; 949 pbap_client->current_folder = path; 950 pbap_client->set_path_offset = 0; 951 goep_client_request_can_send_now(pbap_client->goep_cid); 952 return 0; 953 } 954 955 uint8_t pbap_authentication_password(uint16_t pbap_cid, const char * password){ 956 UNUSED(pbap_cid); 957 if (pbap_client->state != PBAP_W4_USER_AUTHENTICATION) return BTSTACK_BUSY; 958 pbap_client->state = PBAP_W2_SEND_AUTHENTICATED_CONNECT; 959 pbap_client->authentication_password = password; 960 goep_client_request_can_send_now(pbap_client->goep_cid); 961 return 0; 962 } 963 964 uint8_t pbap_pull_vcard_listing(uint16_t pbap_cid, const char * path){ 965 UNUSED(pbap_cid); 966 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 967 pbap_client->state = PBAP_W2_GET_CARD_LIST; 968 pbap_client->phonebook_path = path; 969 pbap_client->phone_number = NULL; 970 pbap_client->request_number = 0; 971 goep_client_request_can_send_now(pbap_client->goep_cid); 972 return 0; 973 } 974 975 uint8_t pbap_pull_vcard_entry(uint16_t pbap_cid, const char * path){ 976 UNUSED(pbap_cid); 977 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 978 pbap_client->state = PBAP_W2_GET_CARD_ENTRY; 979 // pbap_client->phonebook_path = NULL; 980 // pbap_client->phone_number = NULL; 981 pbap_client->vcard_name = path; 982 pbap_client->request_number = 0; 983 goep_client_request_can_send_now(pbap_client->goep_cid); 984 return 0; 985 } 986 987 uint8_t pbap_lookup_by_number(uint16_t pbap_cid, const char * phone_number){ 988 UNUSED(pbap_cid); 989 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 990 pbap_client->state = PBAP_W2_GET_CARD_LIST; 991 pbap_client->phonebook_path = pbap_vcard_listing_name; 992 pbap_client->phone_number = phone_number; 993 pbap_client->request_number = 0; 994 goep_client_request_can_send_now(pbap_client->goep_cid); 995 return 0; 996 } 997 998 uint8_t pbap_abort(uint16_t pbap_cid){ 999 UNUSED(pbap_cid); 1000 log_info("abort current operation, state 0x%02x", pbap_client->state); 1001 pbap_client->abort_operation = 1; 1002 goep_client_request_can_send_now(pbap_client->goep_cid); 1003 return 0; 1004 } 1005 1006 uint8_t pbap_next_packet(uint16_t pbap_cid){ 1007 // log_info("pbap_next_packet, state %x", pbap_client->state); 1008 UNUSED(pbap_cid); 1009 if (!pbap_client->flow_control_enabled) return 0; 1010 switch (pbap_client->state){ 1011 case PBAP_W2_PULL_PHONEBOOK: 1012 goep_client_request_can_send_now(pbap_client->goep_cid); 1013 break; 1014 case PBAP_W4_PHONEBOOK: 1015 pbap_client->flow_next_triggered = 1; 1016 break; 1017 default: 1018 break; 1019 } 1020 return 0; 1021 } 1022 1023 uint8_t pbap_set_flow_control_mode(uint16_t pbap_cid, int enable){ 1024 UNUSED(pbap_cid); 1025 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 1026 pbap_client->flow_control_enabled = enable; 1027 return 0; 1028 } 1029 1030 uint8_t pbap_set_vcard_selector(uint16_t pbap_cid, uint32_t vcard_selector){ 1031 UNUSED(pbap_cid); 1032 pbap_client->vcard_selector = vcard_selector; 1033 return 0; 1034 } 1035 1036 uint8_t pbap_set_vcard_selector_operator(uint16_t pbap_cid, int vcard_selector_operator){ 1037 UNUSED(pbap_cid); 1038 pbap_client->vcard_selector_operator = vcard_selector_operator; 1039 return 0; 1040 } 1041