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