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 70 const char * pbap_vcard_listing_type = "x-bt/vcard-listing"; 71 const char * pbap_vcard_listing_name = "pb"; 72 73 // default 74 static uint32_t pbap_supported_features = 0x0000; 75 76 typedef enum { 77 PBAP_INIT = 0, 78 PBAP_W4_GOEP_CONNECTION, 79 PBAP_W2_SEND_CONNECT_REQUEST, 80 PBAP_W4_CONNECT_RESPONSE, 81 PBAP_W4_USER_AUTHENTICATION, 82 PBAP_W2_SEND_AUTHENTICATED_CONNECT, 83 PBAP_CONNECT_RESPONSE_RECEIVED, 84 PBAP_CONNECTED, 85 // 86 PBAP_W2_SEND_DISCONNECT_REQUEST, 87 PBAP_W4_DISCONNECT_RESPONSE, 88 // 89 PBAP_W2_PULL_PHONEBOOK, 90 PBAP_W4_PHONEBOOK, 91 PBAP_W2_SET_PATH_ROOT, 92 PBAP_W4_SET_PATH_ROOT_COMPLETE, 93 PBAP_W2_SET_PATH_ELEMENT, 94 PBAP_W4_SET_PATH_ELEMENT_COMPLETE, 95 PBAP_W2_GET_PHONEBOOK_SIZE, 96 PBAP_W4_GET_PHONEBOOK_SIZE_COMPLETE, 97 // 98 PBAP_W2_GET_CARD_LIST, 99 PBAP_W4_GET_CARD_LIST_COMPLETE, 100 101 } pbap_state_t; 102 103 typedef enum { 104 SRM_DISABLED, 105 SRM_W4_CONFIRM, 106 SRM_ENABLED_BUT_WAITING, 107 SRM_ENABLED 108 } srm_state_t; 109 110 typedef struct pbap_client { 111 pbap_state_t state; 112 uint16_t cid; 113 bd_addr_t bd_addr; 114 hci_con_handle_t con_handle; 115 uint8_t incoming; 116 uint16_t goep_cid; 117 btstack_packet_handler_t client_handler; 118 int request_number; 119 srm_state_t srm_state; 120 int single_response_mode_parameter; 121 const char * current_folder; 122 const char * phone_number; 123 const char * phonebook_path; 124 uint16_t set_path_offset; 125 /* authentication */ 126 uint8_t authentication_options; 127 uint16_t authentication_nonce[16]; 128 const char * authentication_password; 129 /* xml parser */ 130 yxml_t xml_parser; 131 uint8_t xml_buffer[50]; 132 /* flow control mode */ 133 uint8_t flow_control_enabled; 134 uint8_t flow_next_triggered; 135 } pbap_client_t; 136 137 static pbap_client_t _pbap_client; 138 static pbap_client_t * pbap_client = &_pbap_client; 139 140 static void pbap_client_emit_connected_event(pbap_client_t * context, uint8_t status){ 141 uint8_t event[15]; 142 int pos = 0; 143 event[pos++] = HCI_EVENT_PBAP_META; 144 pos++; // skip len 145 event[pos++] = PBAP_SUBEVENT_CONNECTION_OPENED; 146 little_endian_store_16(event,pos,context->cid); 147 pos+=2; 148 event[pos++] = status; 149 memcpy(&event[pos], context->bd_addr, 6); 150 pos += 6; 151 little_endian_store_16(event,pos,context->con_handle); 152 pos += 2; 153 event[pos++] = context->incoming; 154 event[1] = pos - 2; 155 if (pos != sizeof(event)) log_error("goep_client_emit_connected_event size %u", pos); 156 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 157 } 158 159 static void pbap_client_emit_connection_closed_event(pbap_client_t * context){ 160 uint8_t event[5]; 161 int pos = 0; 162 event[pos++] = HCI_EVENT_PBAP_META; 163 pos++; // skip len 164 event[pos++] = PBAP_SUBEVENT_CONNECTION_CLOSED; 165 little_endian_store_16(event,pos,context->cid); 166 pos+=2; 167 event[1] = pos - 2; 168 if (pos != sizeof(event)) log_error("pbap_client_emit_connection_closed_event size %u", pos); 169 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 170 } 171 172 static void pbap_client_emit_operation_complete_event(pbap_client_t * context, uint8_t status){ 173 uint8_t event[6]; 174 int pos = 0; 175 event[pos++] = HCI_EVENT_PBAP_META; 176 pos++; // skip len 177 event[pos++] = PBAP_SUBEVENT_OPERATION_COMPLETED; 178 little_endian_store_16(event,pos,context->cid); 179 pos+=2; 180 event[pos++]= status; 181 event[1] = pos - 2; 182 if (pos != sizeof(event)) log_error("pbap_client_emit_can_send_now_event size %u", pos); 183 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 184 } 185 186 static void pbap_client_emit_phonebook_size_event(pbap_client_t * context, uint8_t status, uint16_t phonebook_size){ 187 uint8_t event[8]; 188 int pos = 0; 189 event[pos++] = HCI_EVENT_PBAP_META; 190 pos++; // skip len 191 event[pos++] = PBAP_SUBEVENT_PHONEBOOK_SIZE; 192 little_endian_store_16(event,pos,context->cid); 193 pos+=2; 194 event[pos++] = status; 195 little_endian_store_16(event,pos, phonebook_size); 196 pos+=2; 197 event[1] = pos - 2; 198 if (pos != sizeof(event)) log_error("pbap_client_emit_phonebook_size_event size %u", pos); 199 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 200 } 201 202 static void pbap_client_emit_authentication_event(pbap_client_t * context, uint8_t options){ 203 // split options 204 uint8_t user_id_required = options & 1 ? 1 : 0; 205 uint8_t full_access = options & 2 ? 1 : 0; 206 207 uint8_t event[7]; 208 int pos = 0; 209 event[pos++] = HCI_EVENT_PBAP_META; 210 pos++; // skip len 211 event[pos++] = PBAP_SUBEVENT_AUTHENTICATION_REQUEST; 212 little_endian_store_16(event,pos,context->cid); 213 pos+=2; 214 event[pos++] = user_id_required; 215 event[pos++] = full_access; 216 if (pos != sizeof(event)) log_error("pbap_client_emit_authentication_event size %u", pos); 217 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 218 } 219 220 static void pbap_client_emit_card_result_event(pbap_client_t * context, const char * name, const char * handle){ 221 uint8_t event[5 + PBAP_MAX_NAME_LEN + PBAP_MAX_HANDLE_LEN]; 222 int pos = 0; 223 event[pos++] = HCI_EVENT_PBAP_META; 224 pos++; // skip len 225 event[pos++] = PBAP_SUBEVENT_CARD_RESULT; 226 little_endian_store_16(event,pos,context->cid); 227 pos+=2; 228 int name_len = btstack_min(PBAP_MAX_NAME_LEN, strlen(name)); 229 event[pos++] = name_len; 230 memcpy(&event[pos], name, name_len); 231 pos += name_len; 232 int handle_len = btstack_min(PBAP_MAX_HANDLE_LEN, strlen(handle)); 233 event[pos++] = handle_len; 234 memcpy(&event[pos], handle, handle_len); 235 pos += handle_len; 236 event[1] = pos - 2; 237 context->client_handler(HCI_EVENT_PACKET, context->cid, &event[0], pos); 238 } 239 240 static const uint8_t collon = (uint8_t) ':'; 241 242 static void pbap_handle_can_send_now(void){ 243 uint8_t path_element[20]; 244 uint16_t path_element_start; 245 uint16_t path_element_len; 246 uint8_t application_parameters[PBAP_MAX_PHONE_NUMBER_LEN + 10]; 247 uint8_t challenge_response[36]; 248 int i; 249 uint16_t phone_number_len; 250 251 MD5_CTX md5_ctx; 252 253 switch (pbap_client->state){ 254 case PBAP_W2_SEND_CONNECT_REQUEST: 255 goep_client_create_connect_request(pbap_client->goep_cid, OBEX_VERSION, 0, OBEX_MAX_PACKETLEN_DEFAULT); 256 goep_client_add_header_target(pbap_client->goep_cid, 16, pbap_uuid); 257 // Mandatory if the PSE advertises a PbapSupportedFeatures attribute in its SDP record, else excluded. 258 if (goep_client_get_pbap_supported_features(pbap_client->goep_cid) != PBAP_FEATURES_NOT_PRESENT){ 259 application_parameters[0] = PBAP_APPLICATION_PARAMETER_PBAP_SUPPORTED_FEATURES; 260 application_parameters[1] = 4; 261 big_endian_store_32(application_parameters, 2, pbap_supported_features); 262 goep_client_add_header_application_parameters(pbap_client->goep_cid, 6, &application_parameters[0]); 263 } 264 pbap_client->state = PBAP_W4_CONNECT_RESPONSE; 265 goep_client_execute(pbap_client->goep_cid); 266 break; 267 case PBAP_W2_SEND_AUTHENTICATED_CONNECT: 268 goep_client_create_connect_request(pbap_client->goep_cid, OBEX_VERSION, 0, OBEX_MAX_PACKETLEN_DEFAULT); 269 goep_client_add_header_target(pbap_client->goep_cid, 16, pbap_uuid); 270 // setup authentication challenge response 271 i = 0; 272 challenge_response[i++] = 0; // Tag Digest 273 challenge_response[i++] = 16; // Len 274 // calculate md5 275 MD5_Init(&md5_ctx); 276 MD5_Update(&md5_ctx, pbap_client->authentication_nonce, 16); 277 MD5_Update(&md5_ctx, &collon, 1); 278 MD5_Update(&md5_ctx, pbap_client->authentication_password, strlen(pbap_client->authentication_password)); 279 MD5_Final(&challenge_response[i], &md5_ctx); 280 i += 16; 281 challenge_response[i++] = 2; // Tag Nonce 282 challenge_response[i++] = 16; // Len 283 memcpy(&challenge_response[i], pbap_client->authentication_nonce, 16); 284 i += 16; 285 goep_client_add_header_challenge_response(pbap_client->goep_cid, i, challenge_response); 286 pbap_client->state = PBAP_W4_CONNECT_RESPONSE; 287 goep_client_execute(pbap_client->goep_cid); 288 break; 289 case PBAP_W2_SEND_DISCONNECT_REQUEST: 290 goep_client_create_disconnect_request(pbap_client->goep_cid); 291 pbap_client->state = PBAP_W4_DISCONNECT_RESPONSE; 292 goep_client_execute(pbap_client->goep_cid); 293 return; 294 case PBAP_W2_PULL_PHONEBOOK: 295 case PBAP_W2_GET_PHONEBOOK_SIZE: 296 goep_client_create_get_request(pbap_client->goep_cid); 297 if (pbap_client->request_number == 0){ 298 if (!pbap_client->flow_control_enabled){ 299 goep_client_add_header_srm_enable(pbap_client->goep_cid); 300 pbap_client->srm_state = SRM_W4_CONFIRM; 301 } 302 goep_client_add_header_type(pbap_client->goep_cid, pbap_phonebook_type); 303 goep_client_add_header_name(pbap_client->goep_cid, pbap_client->phonebook_path); 304 if (pbap_client->state == PBAP_W2_GET_PHONEBOOK_SIZE){ 305 // Regular TLV wih 1-byte len 306 application_parameters[0] = PBAP_APPLICATION_PARAMETER_MAX_LIST_COUNT; 307 application_parameters[1] = 2; 308 big_endian_store_16(application_parameters, 2, 0); 309 goep_client_add_header_application_parameters(pbap_client->goep_cid, 4, &application_parameters[0]); 310 } else { 311 // 312 } 313 } 314 if (pbap_client->state == PBAP_W2_GET_PHONEBOOK_SIZE){ 315 // state 316 pbap_client->state = PBAP_W4_GET_PHONEBOOK_SIZE_COMPLETE; 317 } else { 318 // state 319 pbap_client->state = PBAP_W4_PHONEBOOK; 320 } 321 // send packet 322 pbap_client->request_number++; 323 goep_client_execute(pbap_client->goep_cid); 324 break; 325 case PBAP_W2_GET_CARD_LIST: 326 goep_client_create_get_request(pbap_client->goep_cid); 327 if (pbap_client->request_number == 0){ 328 if (!pbap_client->flow_control_enabled){ 329 goep_client_add_header_srm_enable(pbap_client->goep_cid); 330 pbap_client->srm_state = SRM_W4_CONFIRM; 331 } 332 goep_client_add_header_type(pbap_client->goep_cid, pbap_vcard_listing_type); 333 goep_client_add_header_name(pbap_client->goep_cid, pbap_vcard_listing_name); 334 // Regular TLV wih 1-byte len 335 i = 0; 336 phone_number_len = btstack_min(PBAP_MAX_PHONE_NUMBER_LEN, strlen(pbap_client->phone_number)); 337 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_SEARCH_VALUE; 338 application_parameters[i++] = phone_number_len; 339 memcpy(&application_parameters[i], pbap_client->phone_number, phone_number_len); 340 i += phone_number_len; 341 application_parameters[i++] = PBAP_APPLICATION_PARAMETER_SEARCH_PROPERTY; 342 application_parameters[i++] = 1; 343 application_parameters[i++] = 0x01; // Number 344 goep_client_add_header_application_parameters(pbap_client->goep_cid, i, &application_parameters[0]); 345 pbap_client->state = PBAP_W4_GET_CARD_LIST_COMPLETE; 346 } 347 // send packet 348 goep_client_execute(pbap_client->goep_cid); 349 break; 350 case PBAP_W2_SET_PATH_ROOT: 351 goep_client_create_set_path_request(pbap_client->goep_cid, 1 << 1); // Don’t create directory 352 // On Android 4.2 Cyanogenmod, using "" as path fails 353 // goep_client_add_header_name(pbap_client->goep_cid, ""); // empty == / 354 // state 355 pbap_client->state = PBAP_W4_SET_PATH_ROOT_COMPLETE; 356 // send packet 357 goep_client_execute(pbap_client->goep_cid); 358 break; 359 case PBAP_W2_SET_PATH_ELEMENT: 360 // find '/' or '\0' 361 path_element_start = pbap_client->set_path_offset; 362 while (pbap_client->current_folder[pbap_client->set_path_offset] != '\0' && 363 pbap_client->current_folder[pbap_client->set_path_offset] != '/'){ 364 pbap_client->set_path_offset++; 365 } 366 // skip / 367 if (pbap_client->current_folder[pbap_client->set_path_offset] == '/'){ 368 pbap_client->set_path_offset++; 369 } 370 path_element_len = pbap_client->set_path_offset-path_element_start; 371 memcpy(path_element, &pbap_client->current_folder[path_element_start], path_element_len); 372 path_element[path_element_len] = 0; 373 374 // detect end of path (after setting path_element) 375 if (pbap_client->current_folder[pbap_client->set_path_offset] == '\0'){ 376 pbap_client->current_folder = NULL; 377 } 378 379 log_info("Path element '%s', done %u", path_element, pbap_client->current_folder == NULL); 380 381 goep_client_create_set_path_request(pbap_client->goep_cid, 1 << 1); // Don’t create directory 382 goep_client_add_header_name(pbap_client->goep_cid, (const char *) path_element); // next element 383 // state 384 pbap_client->state = PBAP_W4_SET_PATH_ELEMENT_COMPLETE; 385 // send packet 386 goep_client_execute(pbap_client->goep_cid); 387 break; 388 default: 389 break; 390 } 391 } 392 393 static void pbap_parse_authentication_challenge(pbap_client_t * context, const uint8_t * challenge_data, uint16_t challenge_len){ 394 // printf("Challenge: "); 395 // printf_hexdump(challenge_data, challenge_len); 396 int i; 397 // uint8_t charset_code = 0; 398 for (i=0 ; i<challenge_len ; ){ 399 int tag = challenge_data[i]; 400 int len = challenge_data[i + 1]; 401 i += 2; 402 switch (tag) { 403 case 0: 404 if (len != 0x10) { 405 log_error("Invalid OBEX digest len %u", len); 406 return; 407 } 408 memcpy(context->authentication_nonce, &challenge_data[i], 16); 409 // printf("Nonce: "); 410 // printf_hexdump(context->authentication_nonce, 16); 411 break; 412 case 1: 413 context->authentication_options = challenge_data[i]; 414 // printf("Options %u\n", context->authentication_options); 415 break; 416 case 2: 417 // TODO: handle charset 418 // charset_code = challenge_data[i]; 419 break; 420 } 421 i += len; 422 } 423 } 424 425 static void pbap_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 426 427 UNUSED(channel); // ok: there is no channel 428 UNUSED(size); // ok: handling own geop events 429 430 obex_iterator_t it; 431 uint8_t status; 432 int srm_value; 433 int srmp_value; 434 int wait_for_user = 0; 435 switch (packet_type){ 436 case HCI_EVENT_PACKET: 437 switch (hci_event_packet_get_type(packet)) { 438 case HCI_EVENT_GOEP_META: 439 switch (hci_event_goep_meta_get_subevent_code(packet)){ 440 case GOEP_SUBEVENT_CONNECTION_OPENED: 441 status = goep_subevent_connection_opened_get_status(packet); 442 pbap_client->con_handle = goep_subevent_connection_opened_get_con_handle(packet); 443 pbap_client->incoming = goep_subevent_connection_opened_get_incoming(packet); 444 goep_subevent_connection_opened_get_bd_addr(packet, pbap_client->bd_addr); 445 if (status){ 446 log_info("pbap: connection failed %u", status); 447 pbap_client->state = PBAP_INIT; 448 pbap_client_emit_connected_event(pbap_client, status); 449 } else { 450 log_info("pbap: connection established"); 451 pbap_client->goep_cid = goep_subevent_connection_opened_get_goep_cid(packet); 452 pbap_client->state = PBAP_W2_SEND_CONNECT_REQUEST; 453 goep_client_request_can_send_now(pbap_client->goep_cid); 454 } 455 break; 456 case GOEP_SUBEVENT_CONNECTION_CLOSED: 457 if (pbap_client->state != PBAP_CONNECTED){ 458 pbap_client_emit_operation_complete_event(pbap_client, OBEX_DISCONNECTED); 459 } 460 pbap_client->state = PBAP_INIT; 461 pbap_client_emit_connection_closed_event(pbap_client); 462 break; 463 case GOEP_SUBEVENT_CAN_SEND_NOW: 464 pbap_handle_can_send_now(); 465 break; 466 } 467 break; 468 default: 469 break; 470 } 471 break; 472 case GOEP_DATA_PACKET: 473 // TODO: handle chunked data 474 obex_dump_packet(goep_client_get_request_opcode(pbap_client->goep_cid), packet, size); 475 switch (pbap_client->state){ 476 case PBAP_W4_CONNECT_RESPONSE: 477 switch (packet[0]){ 478 case OBEX_RESP_SUCCESS: 479 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)){ 480 uint8_t hi = obex_iterator_get_hi(&it); 481 if (hi == OBEX_HEADER_CONNECTION_ID){ 482 goep_client_set_connection_id(pbap_client->goep_cid, obex_iterator_get_data_32(&it)); 483 } 484 } 485 pbap_client->state = PBAP_CONNECTED; 486 pbap_client_emit_connected_event(pbap_client, 0); 487 break; 488 case OBEX_RESP_UNAUTHORIZED: 489 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)){ 490 uint8_t hi = obex_iterator_get_hi(&it); 491 if (hi == OBEX_HEADER_AUTHENTICATION_CHALLENGE){ 492 pbap_parse_authentication_challenge(pbap_client, obex_iterator_get_data(&it), obex_iterator_get_data_len(&it)); 493 } 494 } 495 pbap_client->state = PBAP_W4_USER_AUTHENTICATION; 496 pbap_client_emit_authentication_event(pbap_client, pbap_client->authentication_options); 497 break; 498 default: 499 log_info("pbap: obex connect failed, result 0x%02x", packet[0]); 500 pbap_client->state = PBAP_INIT; 501 pbap_client_emit_connected_event(pbap_client, OBEX_CONNECT_FAILED); 502 break; 503 } 504 break; 505 case PBAP_W4_DISCONNECT_RESPONSE: 506 goep_client_disconnect(pbap_client->goep_cid); 507 break; 508 case PBAP_W4_SET_PATH_ROOT_COMPLETE: 509 case PBAP_W4_SET_PATH_ELEMENT_COMPLETE: 510 log_info("set path root/path element complete, current folder %s, path offset %u", pbap_client->current_folder, pbap_client->set_path_offset); 511 if (packet[0] == OBEX_RESP_SUCCESS){ 512 if (pbap_client->current_folder){ 513 pbap_client->state = PBAP_W2_SET_PATH_ELEMENT; 514 goep_client_request_can_send_now(pbap_client->goep_cid); 515 } else { 516 pbap_client->state = PBAP_CONNECTED; 517 pbap_client_emit_operation_complete_event(pbap_client, 0); 518 } 519 } else if (packet[0] == OBEX_RESP_NOT_FOUND){ 520 pbap_client->state = PBAP_CONNECTED; 521 pbap_client_emit_operation_complete_event(pbap_client, OBEX_NOT_FOUND); 522 } else { 523 pbap_client->state = PBAP_CONNECTED; 524 pbap_client_emit_operation_complete_event(pbap_client, OBEX_UNKNOWN_ERROR); 525 } 526 break; 527 case PBAP_W4_PHONEBOOK: 528 pbap_client->flow_next_triggered = 0; 529 wait_for_user = 0; 530 srm_value = OBEX_SRM_DISABLE; 531 srmp_value = OBEX_SRMP_NEXT; 532 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)){ 533 uint8_t hi = obex_iterator_get_hi(&it); 534 uint16_t data_len = obex_iterator_get_data_len(&it); 535 const uint8_t * data = data = obex_iterator_get_data(&it); 536 switch (hi){ 537 case OBEX_HEADER_BODY: 538 case OBEX_HEADER_END_OF_BODY: 539 pbap_client->client_handler(PBAP_DATA_PACKET, pbap_client->cid, (uint8_t *) data, data_len); 540 wait_for_user++; 541 if (wait_for_user > 1){ 542 log_error("wait_for_user %u", wait_for_user); 543 } 544 break; 545 case OBEX_HEADER_SINGLE_RESPONSE_MODE: 546 if (data_len != 1) break; 547 srm_value = *data; 548 break; 549 case OBEX_HEADER_SINGLE_RESPONSE_MODE_PARAMETER: 550 if (data_len != 1) break; 551 srmp_value = *data; 552 break; 553 default: 554 break; 555 } 556 } 557 switch(packet[0]){ 558 case OBEX_RESP_CONTINUE: 559 switch (pbap_client->srm_state){ 560 case SRM_W4_CONFIRM: 561 switch (srm_value){ 562 case OBEX_SRM_ENABLE: 563 switch (srmp_value){ 564 case OBEX_SRMP_WAIT: 565 pbap_client->srm_state = SRM_ENABLED_BUT_WAITING; 566 break; 567 default: 568 pbap_client->srm_state = SRM_ENABLED; 569 break; 570 } 571 break; 572 default: 573 pbap_client->srm_state = SRM_DISABLED; 574 break; 575 } 576 break; 577 case SRM_ENABLED_BUT_WAITING: 578 switch (srmp_value){ 579 case OBEX_SRMP_WAIT: 580 pbap_client->srm_state = SRM_ENABLED_BUT_WAITING; 581 break; 582 default: 583 pbap_client->srm_state = SRM_ENABLED; 584 break; 585 } 586 break; 587 default: 588 break; 589 } 590 log_info("SRM state %u", pbap_client->srm_state); 591 if (pbap_client->srm_state == SRM_ENABLED) break; 592 pbap_client->state = PBAP_W2_PULL_PHONEBOOK; 593 if (!wait_for_user || pbap_client->flow_next_triggered) { 594 goep_client_request_can_send_now(pbap_client->goep_cid); 595 } 596 break; 597 case OBEX_RESP_SUCCESS: 598 pbap_client->state = PBAP_CONNECTED; 599 pbap_client_emit_operation_complete_event(pbap_client, 0); 600 break; 601 default: 602 log_info("unexpected response 0x%02x", packet[0]); 603 pbap_client->state = PBAP_CONNECTED; 604 pbap_client_emit_operation_complete_event(pbap_client, OBEX_UNKNOWN_ERROR); 605 break; 606 } 607 break; 608 case PBAP_W4_GET_PHONEBOOK_SIZE_COMPLETE: 609 pbap_client->state = PBAP_CONNECTED; 610 if (packet[0] == OBEX_RESP_SUCCESS){ 611 int have_size = 0; 612 uint16_t phonebook_size; 613 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)){ 614 uint8_t hi = obex_iterator_get_hi(&it); 615 if (hi == OBEX_HEADER_APPLICATION_PARAMETERS){ 616 uint16_t data_len = obex_iterator_get_data_len(&it); 617 const uint8_t * data = obex_iterator_get_data(&it); 618 // iterate over application headers (TLV with 1 bytes len) 619 unsigned int i = 0; 620 while (i<data_len){ 621 uint8_t tag = data[i++]; 622 uint8_t len = data[i++]; 623 if (tag == PBAP_APPLICATION_PARAMETER_PHONEBOOK_SIZE && len == 2){ 624 have_size = 1; 625 phonebook_size = big_endian_read_16(data, i); 626 } 627 i+=len; 628 } 629 } 630 } 631 if (have_size){ 632 pbap_client_emit_phonebook_size_event(pbap_client, 0, phonebook_size); 633 break; 634 } 635 } 636 pbap_client_emit_phonebook_size_event(pbap_client, OBEX_UNKNOWN_ERROR, 0); 637 break; 638 case PBAP_W4_GET_CARD_LIST_COMPLETE: 639 switch (packet[0]){ 640 case OBEX_RESP_CONTINUE: 641 pbap_client->state = PBAP_W2_GET_CARD_LIST; 642 goep_client_request_can_send_now(pbap_client->goep_cid); 643 break; 644 case OBEX_RESP_SUCCESS: 645 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)){ 646 uint8_t hi = obex_iterator_get_hi(&it); 647 if (hi == OBEX_HEADER_END_OF_BODY){ 648 uint16_t data_len = obex_iterator_get_data_len(&it); 649 const uint8_t * data = obex_iterator_get_data(&it); 650 // now try parsing it 651 yxml_init(&pbap_client->xml_parser, pbap_client->xml_buffer, sizeof(pbap_client->xml_buffer)); 652 int card_found = 0; 653 int name_found = 0; 654 int handle_found = 0; 655 char name[PBAP_MAX_NAME_LEN]; 656 char handle[PBAP_MAX_HANDLE_LEN]; 657 name[0] = 0; 658 handle[0] = 0; 659 while (data_len--){ 660 yxml_ret_t r = yxml_parse(&pbap_client->xml_parser, *data++); 661 switch (r){ 662 case YXML_ELEMSTART: 663 card_found = strcmp("card", pbap_client->xml_parser.elem) == 0; 664 break; 665 case YXML_ELEMEND: 666 if (card_found){ 667 pbap_client_emit_card_result_event(pbap_client, name, handle); 668 } 669 card_found = 0; 670 break; 671 case YXML_ATTRSTART: 672 if (!card_found) break; 673 if (strcmp("name", pbap_client->xml_parser.attr) == 0){ 674 name_found = 1; 675 break; 676 } 677 if (strcmp("handle", pbap_client->xml_parser.attr) == 0){ 678 handle_found = 1; 679 break; 680 } 681 break; 682 case YXML_ATTRVAL: 683 if (name_found) { 684 // "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." 685 if (strlen(name) + 4 + 1 >= sizeof(name)) break; 686 strcat(name, pbap_client->xml_parser.data); 687 break; 688 } 689 if (handle_found) { 690 // "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." 691 if (strlen(handle) + 4 + 1 >= sizeof(handle)) break; 692 strcat(handle, pbap_client->xml_parser.data); 693 break; 694 } 695 break; 696 case YXML_ATTREND: 697 name_found = 0; 698 handle_found = 0; 699 break; 700 default: 701 break; 702 } 703 } 704 // 705 pbap_client->state = PBAP_CONNECTED; 706 pbap_client_emit_operation_complete_event(pbap_client, 0); 707 } 708 } 709 break; 710 case OBEX_RESP_NOT_ACCEPTABLE: 711 pbap_client->state = PBAP_CONNECTED; 712 pbap_client_emit_operation_complete_event(pbap_client, OBEX_NOT_ACCEPTABLE); 713 break; 714 default: 715 log_info("unexpected response 0x%02x", packet[0]); 716 pbap_client->state = PBAP_CONNECTED; 717 pbap_client_emit_operation_complete_event(pbap_client, OBEX_UNKNOWN_ERROR); 718 break; 719 } 720 break; 721 default: 722 break; 723 } 724 break; 725 default: 726 break; 727 } 728 } 729 730 void pbap_client_init(void){ 731 memset(pbap_client, 0, sizeof(pbap_client_t)); 732 pbap_client->state = PBAP_INIT; 733 pbap_client->cid = 1; 734 } 735 736 uint8_t pbap_connect(btstack_packet_handler_t handler, bd_addr_t addr, uint16_t * out_cid){ 737 if (pbap_client->state != PBAP_INIT) return BTSTACK_MEMORY_ALLOC_FAILED; 738 pbap_client->state = PBAP_W4_GOEP_CONNECTION; 739 pbap_client->client_handler = handler; 740 uint8_t err = goep_client_create_connection(&pbap_packet_handler, addr, BLUETOOTH_SERVICE_CLASS_PHONEBOOK_ACCESS_PSE, &pbap_client->goep_cid); 741 *out_cid = pbap_client->cid; 742 if (err) return err; 743 return 0; 744 } 745 746 uint8_t pbap_disconnect(uint16_t pbap_cid){ 747 UNUSED(pbap_cid); 748 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 749 pbap_client->state = PBAP_W2_SEND_DISCONNECT_REQUEST; 750 goep_client_request_can_send_now(pbap_client->goep_cid); 751 return 0; 752 } 753 754 uint8_t pbap_get_phonebook_size(uint16_t pbap_cid, const char * path){ 755 UNUSED(pbap_cid); 756 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 757 pbap_client->state = PBAP_W2_GET_PHONEBOOK_SIZE; 758 pbap_client->phonebook_path = path; 759 pbap_client->request_number = 0; 760 goep_client_request_can_send_now(pbap_client->goep_cid); 761 return 0; 762 } 763 764 uint8_t pbap_pull_phonebook(uint16_t pbap_cid, const char * path){ 765 UNUSED(pbap_cid); 766 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 767 pbap_client->state = PBAP_W2_PULL_PHONEBOOK; 768 pbap_client->phonebook_path = path; 769 pbap_client->request_number = 0; 770 goep_client_request_can_send_now(pbap_client->goep_cid); 771 return 0; 772 } 773 774 uint8_t pbap_set_phonebook(uint16_t pbap_cid, const char * path){ 775 UNUSED(pbap_cid); 776 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 777 pbap_client->state = PBAP_W2_SET_PATH_ROOT; 778 pbap_client->current_folder = path; 779 pbap_client->set_path_offset = 0; 780 goep_client_request_can_send_now(pbap_client->goep_cid); 781 return 0; 782 } 783 784 uint8_t pbap_authentication_password(uint16_t pbap_cid, const char * password){ 785 UNUSED(pbap_cid); 786 if (pbap_client->state != PBAP_W4_USER_AUTHENTICATION) return BTSTACK_BUSY; 787 pbap_client->state = PBAP_W2_SEND_AUTHENTICATED_CONNECT; 788 pbap_client->authentication_password = password; 789 goep_client_request_can_send_now(pbap_client->goep_cid); 790 return 0; 791 } 792 793 uint8_t pbap_lookup_by_number(uint16_t pbap_cid, const char * phone_number){ 794 UNUSED(pbap_cid); 795 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 796 pbap_client->state = PBAP_W2_GET_CARD_LIST; 797 pbap_client->phone_number = phone_number; 798 goep_client_request_can_send_now(pbap_client->goep_cid); 799 return 0; 800 } 801 802 uint8_t pbap_next_packet(uint16_t pbap_cid){ 803 // log_info("pbap_next_packet, state %x", pbap_client->state); 804 UNUSED(pbap_cid); 805 if (!pbap_client->flow_control_enabled) return 0; 806 switch (pbap_client->state){ 807 case PBAP_W2_PULL_PHONEBOOK: 808 goep_client_request_can_send_now(pbap_client->goep_cid); 809 break; 810 case PBAP_W4_PHONEBOOK: 811 pbap_client->flow_next_triggered = 1; 812 break; 813 default: 814 break; 815 } 816 return 0; 817 } 818 819 uint8_t pbap_set_flow_control_mode(uint16_t pbap_cid, int enable){ 820 UNUSED(pbap_cid); 821 if (pbap_client->state != PBAP_CONNECTED) return BTSTACK_BUSY; 822 pbap_client->flow_control_enabled = enable; 823 return 0; 824 } 825