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 int done; 268 269 MD5_CTX md5_ctx; 270 271 if (pbap_client->abort_operation){ 272 pbap_client->abort_operation = 0; 273 pbap_client->state = PBAP_CONNECTED; 274 goep_client_request_create_abort(pbap_client->goep_cid); 275 goep_client_execute(pbap_client->goep_cid); 276 return; 277 } 278 279 switch (pbap_client->state){ 280 case PBAP_W2_SEND_CONNECT_REQUEST: 281 goep_client_request_create_connect(pbap_client->goep_cid, OBEX_VERSION, 0, OBEX_MAX_PACKETLEN_DEFAULT); 282 goep_client_header_add_target(pbap_client->goep_cid, pbap_uuid, 16); 283 // Mandatory if the PSE advertises a PbapSupportedFeatures attribute in its SDP record, else excluded. 284 if (goep_client_get_pbap_supported_features(pbap_client->goep_cid) != PBAP_FEATURES_NOT_PRESENT){ 285 application_parameters[0] = PBAP_APPLICATION_PARAMETER_PBAP_SUPPORTED_FEATURES; 286 application_parameters[1] = 4; 287 big_endian_store_32(application_parameters, 2, pbap_supported_features); 288 goep_client_header_add_application_parameters(pbap_client->goep_cid, &application_parameters[0], 6); 289 } 290 pbap_client->state = PBAP_W4_CONNECT_RESPONSE; 291 goep_client_execute(pbap_client->goep_cid); 292 break; 293 case PBAP_W2_SEND_AUTHENTICATED_CONNECT: 294 goep_client_request_create_connect(pbap_client->goep_cid, OBEX_VERSION, 0, OBEX_MAX_PACKETLEN_DEFAULT); 295 goep_client_header_add_target(pbap_client->goep_cid, pbap_uuid, 16); 296 // setup authentication challenge response 297 i = 0; 298 challenge_response[i++] = 0; // Tag Digest 299 challenge_response[i++] = 16; // Len 300 // calculate md5 301 MD5_Init(&md5_ctx); 302 MD5_Update(&md5_ctx, pbap_client->authentication_nonce, 16); 303 MD5_Update(&md5_ctx, &collon, 1); 304 MD5_Update(&md5_ctx, pbap_client->authentication_password, strlen(pbap_client->authentication_password)); 305 MD5_Final(&challenge_response[i], &md5_ctx); 306 i += 16; 307 challenge_response[i++] = 2; // Tag Nonce 308 challenge_response[i++] = 16; // Len 309 (void)memcpy(&challenge_response[i], 310 pbap_client->authentication_nonce, 16); 311 i += 16; 312 goep_client_header_add_challenge_response(pbap_client->goep_cid, challenge_response, i); 313 pbap_client->state = PBAP_W4_CONNECT_RESPONSE; 314 goep_client_execute(pbap_client->goep_cid); 315 break; 316 case PBAP_W2_SEND_DISCONNECT_REQUEST: 317 goep_client_request_create_disconnect(pbap_client->goep_cid); 318 pbap_client->state = PBAP_W4_DISCONNECT_RESPONSE; 319 goep_client_execute(pbap_client->goep_cid); 320 return; 321 case PBAP_W2_PULL_PHONEBOOK: 322 case PBAP_W2_GET_PHONEBOOK_SIZE: 323 goep_client_request_create_get(pbap_client->goep_cid); 324 if (pbap_client->request_number == 0){ 325 if (!pbap_client->flow_control_enabled){ 326 goep_client_header_add_srm_enable(pbap_client->goep_cid); 327 pbap_client->srm_state = SRM_W4_CONFIRM; 328 } 329 goep_client_header_add_name(pbap_client->goep_cid, pbap_client->phonebook_path); 330 goep_client_header_add_type(pbap_client->goep_cid, pbap_phonebook_type); 331 i = 0; 332 if (pbap_client->vcard_selector_supported){ 333 // vCard Selector 334 if (pbap_client->vcard_selector){ 335 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_VCARD_SELECTOR; 336 application_parameters[i++] = 8; 337 memset(&application_parameters[i], 0, 4); 338 i += 4; 339 big_endian_store_32(application_parameters, i, pbap_client->vcard_selector); 340 i += 4; 341 } 342 // vCard Selector Operator 343 if (pbap_client->vcard_selector_operator != PBAP_VCARD_SELECTOR_OPERATOR_OR){ 344 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_VCARD_SELECTOR_OPERATOR; 345 application_parameters[i++] = 1; 346 application_parameters[i++] = pbap_client->vcard_selector_operator; 347 } 348 } 349 if (pbap_client->state == PBAP_W2_GET_PHONEBOOK_SIZE){ 350 // Regular TLV wih 1-byte len 351 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_MAX_LIST_COUNT; 352 application_parameters[i++] = 2; 353 big_endian_store_16(application_parameters, 2, 0); 354 i += 2; 355 } 356 if (i){ 357 goep_client_header_add_application_parameters(pbap_client->goep_cid, application_parameters, i); 358 } 359 } 360 if (pbap_client->state == PBAP_W2_GET_PHONEBOOK_SIZE){ 361 // state 362 pbap_client->state = PBAP_W4_GET_PHONEBOOK_SIZE_COMPLETE; 363 } else { 364 // state 365 pbap_client->state = PBAP_W4_PHONEBOOK; 366 } 367 // send packet 368 pbap_client->request_number++; 369 goep_client_execute(pbap_client->goep_cid); 370 break; 371 case PBAP_W2_GET_CARD_LIST: 372 goep_client_request_create_get(pbap_client->goep_cid); 373 if (pbap_client->request_number == 0){ 374 if (!pbap_client->flow_control_enabled){ 375 goep_client_header_add_srm_enable(pbap_client->goep_cid); 376 pbap_client->srm_state = SRM_W4_CONFIRM; 377 } 378 goep_client_header_add_name(pbap_client->goep_cid, pbap_client->phonebook_path); 379 goep_client_header_add_type(pbap_client->goep_cid, pbap_vcard_listing_type); 380 i = 0; 381 if (pbap_client->vcard_selector_supported){ 382 // vCard Selector 383 if (pbap_client->vcard_selector){ 384 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_VCARD_SELECTOR; 385 application_parameters[i++] = 8; 386 memset(&application_parameters[i], 0, 4); 387 i += 4; 388 big_endian_store_32(application_parameters, i, pbap_client->vcard_selector); 389 i += 4; 390 } 391 // vCard Selector Operator 392 if (pbap_client->vcard_selector_operator != PBAP_VCARD_SELECTOR_OPERATOR_OR){ 393 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_VCARD_SELECTOR_OPERATOR; 394 application_parameters[i++] = 1; 395 application_parameters[i++] = pbap_client->vcard_selector_operator; 396 } 397 } 398 if (pbap_client->phone_number){ 399 // Search by phpone number 400 phone_number_len = btstack_min(PBAP_MAX_PHONE_NUMBER_LEN, strlen(pbap_client->phone_number)); 401 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_SEARCH_VALUE; 402 application_parameters[i++] = phone_number_len; 403 (void)memcpy(&application_parameters[i], 404 pbap_client->phone_number, phone_number_len); 405 i += phone_number_len; 406 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_SEARCH_PROPERTY; 407 application_parameters[i++] = 1; 408 application_parameters[i++] = 0x01; // Number 409 } 410 if (i){ 411 goep_client_header_add_application_parameters(pbap_client->goep_cid, &application_parameters[0], i); 412 } 413 } 414 // send packet 415 pbap_client->state = PBAP_W4_GET_CARD_LIST_COMPLETE; 416 pbap_client->request_number++; 417 goep_client_execute(pbap_client->goep_cid); 418 break; 419 case PBAP_W2_GET_CARD_ENTRY: 420 goep_client_request_create_get(pbap_client->goep_cid); 421 if (pbap_client->request_number == 0){ 422 if (!pbap_client->flow_control_enabled){ 423 goep_client_header_add_srm_enable(pbap_client->goep_cid); 424 pbap_client->srm_state = SRM_W4_CONFIRM; 425 } 426 goep_client_header_add_name(pbap_client->goep_cid, pbap_client->vcard_name); 427 goep_client_header_add_type(pbap_client->goep_cid, pbap_vcard_entry_type); 428 i = 0; 429 if (i){ 430 // TODO: support property selector 431 // TODO: support format 432 goep_client_header_add_application_parameters(pbap_client->goep_cid, &application_parameters[0], i); 433 } 434 pbap_client->state = PBAP_W4_GET_CARD_ENTRY_COMPLETE; 435 } 436 // send packet 437 pbap_client->request_number++; 438 goep_client_execute(pbap_client->goep_cid); 439 break; 440 case PBAP_W2_SET_PATH_ROOT: 441 goep_client_request_create_set_path(pbap_client->goep_cid, 1 << 1); // Don’t create directory 442 goep_client_header_add_name(pbap_client->goep_cid, ""); 443 // state 444 pbap_client->state = PBAP_W4_SET_PATH_ROOT_COMPLETE; 445 // send packet 446 goep_client_execute(pbap_client->goep_cid); 447 break; 448 case PBAP_W2_SET_PATH_ELEMENT: 449 // find '/' or '\0' 450 path_element_start = pbap_client->set_path_offset; 451 while ((pbap_client->current_folder[pbap_client->set_path_offset] != '\0') && 452 (pbap_client->current_folder[pbap_client->set_path_offset] != '/')){ 453 pbap_client->set_path_offset++; 454 } 455 path_element_len = pbap_client->set_path_offset-path_element_start; 456 (void)memcpy(path_element, 457 &pbap_client->current_folder[path_element_start], 458 path_element_len); 459 path_element[path_element_len] = 0; 460 461 // skip / 462 if (pbap_client->current_folder[pbap_client->set_path_offset] == '/'){ 463 pbap_client->set_path_offset++; 464 } 465 466 // done? 467 done = pbap_client->current_folder[pbap_client->set_path_offset] == '\0'; 468 469 // status 470 log_info("Path element '%s', done %u", path_element, done); 471 472 goep_client_request_create_set_path(pbap_client->goep_cid, 1 << 1); // Don’t create directory 473 goep_client_header_add_name(pbap_client->goep_cid, (const char *) path_element); // next element 474 // state 475 pbap_client->state = PBAP_W4_SET_PATH_ELEMENT_COMPLETE; 476 // send packet 477 goep_client_execute(pbap_client->goep_cid); 478 break; 479 default: 480 break; 481 } 482 } 483 484 static void pbap_parse_authentication_challenge(pbap_client_t * context, const uint8_t * challenge_data, uint16_t challenge_len){ 485 // printf("Challenge: "); 486 // printf_hexdump(challenge_data, challenge_len); 487 int i; 488 // uint8_t charset_code = 0; 489 for (i=0 ; i<challenge_len ; ){ 490 int tag = challenge_data[i]; 491 int len = challenge_data[i + 1]; 492 i += 2; 493 switch (tag) { 494 case 0: 495 if (len != 0x10) { 496 log_error("Invalid OBEX digest len %u", len); 497 return; 498 } 499 (void)memcpy(context->authentication_nonce, 500 &challenge_data[i], 16); 501 // printf("Nonce: "); 502 // printf_hexdump(context->authentication_nonce, 16); 503 break; 504 case 1: 505 context->authentication_options = challenge_data[i]; 506 // printf("Options %u\n", context->authentication_options); 507 break; 508 case 2: 509 // TODO: handle charset 510 // charset_code = challenge_data[i]; 511 break; 512 } 513 i += len; 514 } 515 } 516 517 static void pbap_process_srm_headers(pbap_client_t * context, uint8_t *packet, uint16_t size){ 518 519 if (packet[0] != OBEX_RESP_CONTINUE) return; 520 521 // get SRM and SRMP Headers 522 int srm_value = OBEX_SRM_DISABLE; 523 int srmp_value = OBEX_SRMP_NEXT; 524 obex_iterator_t it; 525 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)){ 526 uint8_t hi = obex_iterator_get_hi(&it); 527 uint16_t data_len = obex_iterator_get_data_len(&it); 528 const uint8_t * data = obex_iterator_get_data(&it); 529 switch (hi){ 530 case OBEX_HEADER_SINGLE_RESPONSE_MODE: 531 if (data_len != 1) break; 532 srm_value = *data; 533 break; 534 case OBEX_HEADER_SINGLE_RESPONSE_MODE_PARAMETER: 535 if (data_len != 1) break; 536 srmp_value = *data; 537 break; 538 default: 539 break; 540 } 541 } 542 543 // Update SRM state based on SRM haders 544 switch (context->srm_state){ 545 case SRM_W4_CONFIRM: 546 switch (srm_value){ 547 case OBEX_SRM_ENABLE: 548 switch (srmp_value){ 549 case OBEX_SRMP_WAIT: 550 context->srm_state = SRM_ENABLED_BUT_WAITING; 551 break; 552 default: 553 context->srm_state = SRM_ENABLED; 554 break; 555 } 556 break; 557 default: 558 context->srm_state = SRM_DISABLED; 559 break; 560 } 561 break; 562 case SRM_ENABLED_BUT_WAITING: 563 switch (srmp_value){ 564 case OBEX_SRMP_WAIT: 565 context->srm_state = SRM_ENABLED_BUT_WAITING; 566 break; 567 default: 568 context->srm_state = SRM_ENABLED; 569 break; 570 } 571 break; 572 default: 573 break; 574 } 575 log_info("SRM state %u", context->srm_state); 576 } 577 578 static void pbap_client_process_vcard_listing(uint8_t *packet, uint16_t size){ 579 obex_iterator_t it; 580 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)){ 581 uint8_t hi = obex_iterator_get_hi(&it); 582 if ((hi == OBEX_HEADER_END_OF_BODY) || 583 (hi == OBEX_HEADER_BODY)){ 584 uint16_t data_len = obex_iterator_get_data_len(&it); 585 const uint8_t * data = obex_iterator_get_data(&it); 586 // now try parsing it 587 yxml_init(&pbap_client->xml_parser, pbap_client->xml_buffer, sizeof(pbap_client->xml_buffer)); 588 int card_found = 0; 589 int name_found = 0; 590 int handle_found = 0; 591 char name[PBAP_MAX_NAME_LEN]; 592 char handle[PBAP_MAX_HANDLE_LEN]; 593 while (data_len--){ 594 yxml_ret_t r = yxml_parse(&pbap_client->xml_parser, *data++); 595 switch (r){ 596 case YXML_ELEMSTART: 597 card_found = strcmp("card", pbap_client->xml_parser.elem) == 0; 598 break; 599 case YXML_ELEMEND: 600 if (card_found){ 601 pbap_client_emit_card_result_event(pbap_client, name, handle); 602 } 603 card_found = 0; 604 break; 605 case YXML_ATTRSTART: 606 if (!card_found) break; 607 if (strcmp("name", pbap_client->xml_parser.attr) == 0){ 608 name_found = 1; 609 name[0] = 0; 610 break; 611 } 612 if (strcmp("handle", pbap_client->xml_parser.attr) == 0){ 613 handle_found = 1; 614 handle[0] = 0; 615 break; 616 } 617 break; 618 case YXML_ATTRVAL: 619 if (name_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 if ((strlen(name) + 4 + 1) >= sizeof(name)) break; 622 strcat(name, pbap_client->xml_parser.data); 623 break; 624 } 625 if (handle_found) { 626 // "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." 627 if ((strlen(handle) + 4 + 1) >= sizeof(handle)) break; 628 strcat(handle, pbap_client->xml_parser.data); 629 break; 630 } 631 break; 632 case YXML_ATTREND: 633 name_found = 0; 634 handle_found = 0; 635 break; 636 default: 637 break; 638 } 639 } 640 } 641 } 642 } 643 static void pbap_packet_handler_hci(uint8_t *packet, uint16_t size){ 644 UNUSED(size); 645 uint8_t status; 646 switch (hci_event_packet_get_type(packet)) { 647 case HCI_EVENT_GOEP_META: 648 switch (hci_event_goep_meta_get_subevent_code(packet)){ 649 case GOEP_SUBEVENT_CONNECTION_OPENED: 650 status = goep_subevent_connection_opened_get_status(packet); 651 pbap_client->con_handle = goep_subevent_connection_opened_get_con_handle(packet); 652 pbap_client->incoming = goep_subevent_connection_opened_get_incoming(packet); 653 goep_subevent_connection_opened_get_bd_addr(packet, pbap_client->bd_addr); 654 if (status){ 655 log_info("pbap: connection failed %u", status); 656 pbap_client->state = PBAP_INIT; 657 pbap_client_emit_connected_event(pbap_client, status); 658 } else { 659 log_info("pbap: connection established"); 660 pbap_client->goep_cid = goep_subevent_connection_opened_get_goep_cid(packet); 661 pbap_client->state = PBAP_W2_SEND_CONNECT_REQUEST; 662 goep_client_request_can_send_now(pbap_client->goep_cid); 663 } 664 break; 665 case GOEP_SUBEVENT_CONNECTION_CLOSED: 666 if (pbap_client->state != PBAP_CONNECTED){ 667 pbap_client_emit_operation_complete_event(pbap_client, OBEX_DISCONNECTED); 668 } 669 pbap_client->state = PBAP_INIT; 670 pbap_client_emit_connection_closed_event(pbap_client); 671 break; 672 case GOEP_SUBEVENT_CAN_SEND_NOW: 673 pbap_handle_can_send_now(); 674 break; 675 } 676 break; 677 default: 678 break; 679 } 680 } 681 682 static void pbap_packet_handler_goep(uint8_t *packet, uint16_t size){ 683 obex_iterator_t it; 684 int wait_for_user = 0; 685 686 // TODO: handle chunked data 687 // obex_dump_packet(goep_client_get_request_opcode(pbap_client->goep_cid), packet, size); 688 switch (pbap_client->state){ 689 case PBAP_W4_CONNECT_RESPONSE: 690 switch (packet[0]){ 691 case OBEX_RESP_SUCCESS: 692 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)){ 693 uint8_t hi = obex_iterator_get_hi(&it); 694 if (hi == OBEX_HEADER_CONNECTION_ID){ 695 goep_client_set_connection_id(pbap_client->goep_cid, obex_iterator_get_data_32(&it)); 696 } 697 } 698 pbap_client->state = PBAP_CONNECTED; 699 pbap_client->vcard_selector_supported = pbap_supported_features & goep_client_get_pbap_supported_features(pbap_client->goep_cid) & PBAP_SUPPORTED_FEATURES_VCARD_SELECTING; 700 pbap_client_emit_connected_event(pbap_client, 0); 701 break; 702 case OBEX_RESP_UNAUTHORIZED: 703 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)){ 704 uint8_t hi = obex_iterator_get_hi(&it); 705 if (hi == OBEX_HEADER_AUTHENTICATION_CHALLENGE){ 706 pbap_parse_authentication_challenge(pbap_client, obex_iterator_get_data(&it), obex_iterator_get_data_len(&it)); 707 } 708 } 709 pbap_client->state = PBAP_W4_USER_AUTHENTICATION; 710 pbap_client_emit_authentication_event(pbap_client, pbap_client->authentication_options); 711 break; 712 default: 713 log_info("pbap: obex connect failed, result 0x%02x", packet[0]); 714 pbap_client->state = PBAP_INIT; 715 pbap_client_emit_connected_event(pbap_client, OBEX_CONNECT_FAILED); 716 break; 717 } 718 break; 719 case PBAP_W4_DISCONNECT_RESPONSE: 720 goep_client_disconnect(pbap_client->goep_cid); 721 break; 722 case PBAP_W4_SET_PATH_ROOT_COMPLETE: 723 case PBAP_W4_SET_PATH_ELEMENT_COMPLETE: 724 if (packet[0] == OBEX_RESP_SUCCESS){ 725 // more path? 726 if (pbap_client->current_folder[pbap_client->set_path_offset]){ 727 pbap_client->state = PBAP_W2_SET_PATH_ELEMENT; 728 goep_client_request_can_send_now(pbap_client->goep_cid); 729 } else { 730 pbap_client->current_folder = NULL; 731 pbap_client->state = PBAP_CONNECTED; 732 pbap_client_emit_operation_complete_event(pbap_client, 0); 733 } 734 } else if (packet[0] == OBEX_RESP_NOT_FOUND){ 735 pbap_client->state = PBAP_CONNECTED; 736 pbap_client_emit_operation_complete_event(pbap_client, OBEX_NOT_FOUND); 737 } else { 738 pbap_client->state = PBAP_CONNECTED; 739 pbap_client_emit_operation_complete_event(pbap_client, OBEX_UNKNOWN_ERROR); 740 } 741 break; 742 case PBAP_W4_PHONEBOOK: 743 pbap_client->flow_next_triggered = 0; 744 wait_for_user = 0; 745 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)){ 746 uint8_t hi = obex_iterator_get_hi(&it); 747 uint16_t data_len = obex_iterator_get_data_len(&it); 748 const uint8_t * data = obex_iterator_get_data(&it); 749 switch (hi){ 750 case OBEX_HEADER_BODY: 751 case OBEX_HEADER_END_OF_BODY: 752 pbap_client->client_handler(PBAP_DATA_PACKET, pbap_client->cid, (uint8_t *) data, data_len); 753 wait_for_user++; 754 if (wait_for_user > 1){ 755 log_error("wait_for_user %u", wait_for_user); 756 } 757 break; 758 default: 759 break; 760 } 761 } 762 switch(packet[0]){ 763 case OBEX_RESP_CONTINUE: 764 pbap_process_srm_headers(pbap_client, packet, size); 765 if (pbap_client->srm_state == SRM_ENABLED) break; 766 pbap_client->state = PBAP_W2_PULL_PHONEBOOK; 767 if (!pbap_client->flow_control_enabled || !wait_for_user || pbap_client->flow_next_triggered) { 768 goep_client_request_can_send_now(pbap_client->goep_cid); 769 } 770 break; 771 case OBEX_RESP_SUCCESS: 772 pbap_client->state = PBAP_CONNECTED; 773 pbap_client_emit_operation_complete_event(pbap_client, 0); 774 break; 775 default: 776 log_info("unexpected response 0x%02x", packet[0]); 777 pbap_client->state = PBAP_CONNECTED; 778 pbap_client_emit_operation_complete_event(pbap_client, OBEX_UNKNOWN_ERROR); 779 break; 780 } 781 break; 782 case PBAP_W4_GET_PHONEBOOK_SIZE_COMPLETE: 783 pbap_client->state = PBAP_CONNECTED; 784 if (packet[0] == OBEX_RESP_SUCCESS){ 785 int have_size = 0; 786 uint16_t phonebook_size; 787 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)){ 788 uint8_t hi = obex_iterator_get_hi(&it); 789 if (hi == OBEX_HEADER_APPLICATION_PARAMETERS){ 790 uint16_t data_len = obex_iterator_get_data_len(&it); 791 const uint8_t * data = obex_iterator_get_data(&it); 792 // iterate over application headers (TLV with 1 bytes len) 793 unsigned int i = 0; 794 while (i<data_len){ 795 uint8_t tag = data[i++]; 796 uint8_t len = data[i++]; 797 if ((tag == PBAP_APPLICATION_PARAMETER_PHONEBOOK_SIZE) && (len == 2)){ 798 have_size = 1; 799 phonebook_size = big_endian_read_16(data, i); 800 } 801 i+=len; 802 } 803 } 804 } 805 if (have_size){ 806 pbap_client_emit_phonebook_size_event(pbap_client, 0, phonebook_size); 807 break; 808 } 809 } 810 pbap_client_emit_phonebook_size_event(pbap_client, OBEX_UNKNOWN_ERROR, 0); 811 break; 812 case PBAP_W4_GET_CARD_LIST_COMPLETE: 813 switch (packet[0]){ 814 case OBEX_RESP_CONTINUE: 815 // process data 816 pbap_client_process_vcard_listing(packet, size); 817 // handle continue 818 pbap_process_srm_headers(pbap_client, packet, size); 819 if (pbap_client->srm_state == SRM_ENABLED) break; 820 pbap_client->state = PBAP_W2_GET_CARD_LIST; 821 if (!pbap_client->flow_control_enabled || !wait_for_user || pbap_client->flow_next_triggered) { 822 goep_client_request_can_send_now(pbap_client->goep_cid); 823 } 824 break; 825 case OBEX_RESP_SUCCESS: 826 // process data 827 pbap_client_process_vcard_listing(packet, size); 828 // done 829 pbap_client->state = PBAP_CONNECTED; 830 pbap_client_emit_operation_complete_event(pbap_client, 0); 831 break; 832 case OBEX_RESP_NOT_ACCEPTABLE: 833 pbap_client->state = PBAP_CONNECTED; 834 pbap_client_emit_operation_complete_event(pbap_client, OBEX_NOT_ACCEPTABLE); 835 break; 836 default: 837 log_info("unexpected response 0x%02x", packet[0]); 838 pbap_client->state = PBAP_CONNECTED; 839 pbap_client_emit_operation_complete_event(pbap_client, OBEX_UNKNOWN_ERROR); 840 break; 841 } 842 break; 843 case PBAP_W4_GET_CARD_ENTRY_COMPLETE: 844 switch (packet[0]){ 845 case OBEX_RESP_CONTINUE: 846 pbap_process_srm_headers(pbap_client, packet, size); 847 if (pbap_client->srm_state == SRM_ENABLED) break; 848 pbap_client->state = PBAP_W2_GET_CARD_ENTRY; 849 if (!pbap_client->flow_control_enabled || !wait_for_user || pbap_client->flow_next_triggered) { 850 goep_client_request_can_send_now(pbap_client->goep_cid); 851 } 852 break; 853 case OBEX_RESP_SUCCESS: 854 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)){ 855 uint8_t hi = obex_iterator_get_hi(&it); 856 if ((hi == OBEX_HEADER_END_OF_BODY) || 857 (hi == OBEX_HEADER_BODY)){ 858 // uint16_t data_len = obex_iterator_get_data_len(&it); 859 // const uint8_t * data = obex_iterator_get_data(&it); 860 // now try parsing it 861 } 862 } 863 pbap_client->state = PBAP_CONNECTED; 864 pbap_client_emit_operation_complete_event(pbap_client, 0); 865 break; 866 case OBEX_RESP_NOT_ACCEPTABLE: 867 pbap_client->state = PBAP_CONNECTED; 868 pbap_client_emit_operation_complete_event(pbap_client, OBEX_NOT_ACCEPTABLE); 869 break; 870 default: 871 log_info("unexpected response 0x%02x", packet[0]); 872 pbap_client->state = PBAP_CONNECTED; 873 pbap_client_emit_operation_complete_event(pbap_client, OBEX_UNKNOWN_ERROR); 874 break; 875 } 876 break; 877 default: 878 break; 879 } 880 } 881 882 static void pbap_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 883 UNUSED(channel); // ok: there is no channel 884 UNUSED(size); // ok: handling own geop events 885 886 switch (packet_type){ 887 case HCI_EVENT_PACKET: 888 pbap_packet_handler_hci(packet, size); 889 break; 890 case GOEP_DATA_PACKET: 891 pbap_packet_handler_goep(packet, size); 892 break; 893 default: 894 break; 895 } 896 } 897 898 void pbap_client_init(void){ 899 memset(pbap_client, 0, sizeof(pbap_client_t)); 900 pbap_client->state = PBAP_INIT; 901 pbap_client->cid = 1; 902 } 903 904 uint8_t pbap_connect(btstack_packet_handler_t handler, bd_addr_t addr, uint16_t * out_cid){ 905 if (pbap_client->state != PBAP_INIT) return BTSTACK_MEMORY_ALLOC_FAILED; 906 907 pbap_client->state = PBAP_W4_GOEP_CONNECTION; 908 pbap_client->client_handler = handler; 909 pbap_client->vcard_selector = 0; 910 pbap_client->vcard_selector_operator = PBAP_VCARD_SELECTOR_OPERATOR_OR; 911 912 uint8_t err = goep_client_create_connection(&pbap_packet_handler, addr, BLUETOOTH_SERVICE_CLASS_PHONEBOOK_ACCESS_PSE, &pbap_client->goep_cid); 913 *out_cid = pbap_client->cid; 914 if (err) return err; 915 return 0; 916 } 917 918 uint8_t pbap_disconnect(uint16_t pbap_cid){ 919 UNUSED(pbap_cid); 920 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 921 pbap_client->state = PBAP_W2_SEND_DISCONNECT_REQUEST; 922 goep_client_request_can_send_now(pbap_client->goep_cid); 923 return 0; 924 } 925 926 uint8_t pbap_get_phonebook_size(uint16_t pbap_cid, const char * path){ 927 UNUSED(pbap_cid); 928 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 929 pbap_client->state = PBAP_W2_GET_PHONEBOOK_SIZE; 930 pbap_client->phonebook_path = path; 931 pbap_client->request_number = 0; 932 goep_client_request_can_send_now(pbap_client->goep_cid); 933 return 0; 934 } 935 936 uint8_t pbap_pull_phonebook(uint16_t pbap_cid, const char * path){ 937 UNUSED(pbap_cid); 938 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 939 pbap_client->state = PBAP_W2_PULL_PHONEBOOK; 940 pbap_client->phonebook_path = path; 941 pbap_client->request_number = 0; 942 goep_client_request_can_send_now(pbap_client->goep_cid); 943 return 0; 944 } 945 946 uint8_t pbap_set_phonebook(uint16_t pbap_cid, const char * path){ 947 UNUSED(pbap_cid); 948 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 949 pbap_client->state = PBAP_W2_SET_PATH_ROOT; 950 pbap_client->current_folder = path; 951 pbap_client->set_path_offset = 0; 952 goep_client_request_can_send_now(pbap_client->goep_cid); 953 return 0; 954 } 955 956 uint8_t pbap_authentication_password(uint16_t pbap_cid, const char * password){ 957 UNUSED(pbap_cid); 958 if (pbap_client->state != PBAP_W4_USER_AUTHENTICATION) return BTSTACK_BUSY; 959 pbap_client->state = PBAP_W2_SEND_AUTHENTICATED_CONNECT; 960 pbap_client->authentication_password = password; 961 goep_client_request_can_send_now(pbap_client->goep_cid); 962 return 0; 963 } 964 965 uint8_t pbap_pull_vcard_listing(uint16_t pbap_cid, const char * path){ 966 UNUSED(pbap_cid); 967 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 968 pbap_client->state = PBAP_W2_GET_CARD_LIST; 969 pbap_client->phonebook_path = path; 970 pbap_client->phone_number = NULL; 971 pbap_client->request_number = 0; 972 goep_client_request_can_send_now(pbap_client->goep_cid); 973 return 0; 974 } 975 976 uint8_t pbap_pull_vcard_entry(uint16_t pbap_cid, const char * path){ 977 UNUSED(pbap_cid); 978 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 979 pbap_client->state = PBAP_W2_GET_CARD_ENTRY; 980 // pbap_client->phonebook_path = NULL; 981 // pbap_client->phone_number = NULL; 982 pbap_client->vcard_name = path; 983 pbap_client->request_number = 0; 984 goep_client_request_can_send_now(pbap_client->goep_cid); 985 return 0; 986 } 987 988 uint8_t pbap_lookup_by_number(uint16_t pbap_cid, const char * phone_number){ 989 UNUSED(pbap_cid); 990 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 991 pbap_client->state = PBAP_W2_GET_CARD_LIST; 992 pbap_client->phonebook_path = pbap_vcard_listing_name; 993 pbap_client->phone_number = phone_number; 994 pbap_client->request_number = 0; 995 goep_client_request_can_send_now(pbap_client->goep_cid); 996 return 0; 997 } 998 999 uint8_t pbap_abort(uint16_t pbap_cid){ 1000 UNUSED(pbap_cid); 1001 log_info("abort current operation, state 0x%02x", pbap_client->state); 1002 pbap_client->abort_operation = 1; 1003 goep_client_request_can_send_now(pbap_client->goep_cid); 1004 return 0; 1005 } 1006 1007 uint8_t pbap_next_packet(uint16_t pbap_cid){ 1008 // log_info("pbap_next_packet, state %x", pbap_client->state); 1009 UNUSED(pbap_cid); 1010 if (!pbap_client->flow_control_enabled) return 0; 1011 switch (pbap_client->state){ 1012 case PBAP_W2_PULL_PHONEBOOK: 1013 goep_client_request_can_send_now(pbap_client->goep_cid); 1014 break; 1015 case PBAP_W4_PHONEBOOK: 1016 pbap_client->flow_next_triggered = 1; 1017 break; 1018 default: 1019 break; 1020 } 1021 return 0; 1022 } 1023 1024 uint8_t pbap_set_flow_control_mode(uint16_t pbap_cid, int enable){ 1025 UNUSED(pbap_cid); 1026 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 1027 pbap_client->flow_control_enabled = enable; 1028 return 0; 1029 } 1030 1031 uint8_t pbap_set_vcard_selector(uint16_t pbap_cid, uint32_t vcard_selector){ 1032 UNUSED(pbap_cid); 1033 pbap_client->vcard_selector = vcard_selector; 1034 return 0; 1035 } 1036 1037 uint8_t pbap_set_vcard_selector_operator(uint16_t pbap_cid, int vcard_selector_operator){ 1038 UNUSED(pbap_cid); 1039 pbap_client->vcard_selector_operator = vcard_selector_operator; 1040 return 0; 1041 } 1042