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 BLUEKITCHEN 24 * GMBH 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__ "goep_client.c" 39 40 #include "btstack_config.h" 41 42 #include <stdint.h> 43 #include <string.h> 44 45 #include "btstack_debug.h" 46 #include "hci_dump.h" 47 #include "bluetooth_sdp.h" 48 #include "btstack_event.h" 49 #include "classic/goep_client.h" 50 #include "classic/obex_message_builder.h" 51 #include "classic/obex.h" 52 #include "classic/obex_iterator.h" 53 #include "classic/rfcomm.h" 54 #include "classic/sdp_client.h" 55 #include "classic/sdp_util.h" 56 #include "l2cap.h" 57 58 //------------------------------------------------------------------------------------------------------------ 59 // goep_client.c 60 // 61 62 #ifdef ENABLE_GOEP_L2CAP 63 #ifndef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 64 #error "ENABLE_GOEP_L2CAP requires ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE. Please enable ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE or disable ENABLE_GOEP_L2CAP" 65 #endif 66 #endif 67 68 static uint16_t goep_client_cid; 69 static btstack_linked_list_t goep_clients; 70 71 static goep_client_t * goep_client_sdp_active; 72 static uint8_t goep_client_sdp_query_attribute_value[30]; 73 static const unsigned int goep_client_sdp_query_attribute_value_buffer_size = sizeof(goep_client_sdp_query_attribute_value); 74 static uint8_t goep_packet_buffer[150]; 75 76 // singleton instance 77 static goep_client_t goep_client_singleton; 78 79 #ifdef ENABLE_GOEP_L2CAP 80 // singleton instance 81 static uint8_t goep_client_singleton_ertm_buffer[1000]; 82 static l2cap_ertm_config_t goep_client_singleton_ertm_config = { 83 1, // ertm mandatory 84 2, // max transmit, some tests require > 1 85 2000, 86 12000, 87 512, // l2cap ertm mtu 88 2, 89 2, 90 1, // 16-bit FCS 91 }; 92 #endif 93 94 static inline void goep_client_emit_connected_event(goep_client_t * goep_client, uint8_t status){ 95 uint8_t event[15]; 96 int pos = 0; 97 event[pos++] = HCI_EVENT_GOEP_META; 98 pos++; // skip len 99 event[pos++] = GOEP_SUBEVENT_CONNECTION_OPENED; 100 little_endian_store_16(event, pos, goep_client->cid); 101 pos+=2; 102 event[pos++] = status; 103 (void)memcpy(&event[pos], goep_client->bd_addr, 6); 104 pos += 6; 105 little_endian_store_16(event, pos, goep_client->con_handle); 106 pos += 2; 107 event[pos++] = goep_client->incoming; 108 event[1] = pos - 2; 109 if (pos != sizeof(event)) log_error("goep_client_emit_connected_event size %u", pos); 110 goep_client->client_handler(HCI_EVENT_PACKET, goep_client->cid, &event[0], pos); 111 } 112 113 static inline void goep_client_emit_connection_closed_event(goep_client_t * goep_client){ 114 uint8_t event[5]; 115 int pos = 0; 116 event[pos++] = HCI_EVENT_GOEP_META; 117 pos++; // skip len 118 event[pos++] = GOEP_SUBEVENT_CONNECTION_CLOSED; 119 little_endian_store_16(event, pos, goep_client->cid); 120 pos+=2; 121 event[1] = pos - 2; 122 if (pos != sizeof(event)) log_error("goep_client_emit_connection_closed_event size %u", pos); 123 goep_client->client_handler(HCI_EVENT_PACKET, goep_client->cid, &event[0], pos); 124 } 125 126 static inline void goep_client_emit_can_send_now_event(goep_client_t * goep_client){ 127 uint8_t event[5]; 128 int pos = 0; 129 event[pos++] = HCI_EVENT_GOEP_META; 130 pos++; // skip len 131 event[pos++] = GOEP_SUBEVENT_CAN_SEND_NOW; 132 little_endian_store_16(event, pos, goep_client->cid); 133 pos+=2; 134 event[1] = pos - 2; 135 if (pos != sizeof(event)) log_error("goep_client_emit_can_send_now_event size %u", pos); 136 goep_client->client_handler(HCI_EVENT_PACKET, goep_client->cid, &event[0], pos); 137 } 138 139 static void goep_client_handle_connection_opened(goep_client_t * goep_client, uint8_t status, uint16_t mtu){ 140 if (status) { 141 goep_client->state = GOEP_CLIENT_INIT; 142 btstack_linked_list_remove(&goep_clients, (btstack_linked_item_t *) goep_client); 143 log_info("goep_client: open failed, status %u", status); 144 } else { 145 goep_client->bearer_mtu = mtu; 146 goep_client->state = GOEP_CLIENT_CONNECTED; 147 log_info("goep_client: connection opened. cid %u, max frame size %u", goep_client->bearer_cid, goep_client->bearer_mtu); 148 } 149 goep_client_emit_connected_event(goep_client, status); 150 } 151 152 static void goep_client_handle_connection_close(goep_client_t * goep_client){ 153 goep_client->state = GOEP_CLIENT_INIT; 154 btstack_linked_list_remove(&goep_clients, (btstack_linked_item_t *) goep_client); 155 goep_client_emit_connection_closed_event(goep_client); 156 } 157 158 static goep_client_t * goep_client_for_cid(uint16_t cid){ 159 btstack_linked_list_iterator_t it; 160 btstack_linked_list_iterator_init(&it, &goep_clients); 161 while (btstack_linked_list_iterator_has_next(&it)){ 162 goep_client_t * goep_client = (goep_client_t *) btstack_linked_list_iterator_next(&it); 163 if (goep_client->cid == cid){ 164 return goep_client; 165 } 166 } 167 return NULL; 168 } 169 170 static goep_client_t * goep_client_for_bearer_cid(uint16_t bearer_cid){ 171 btstack_linked_list_iterator_t it; 172 btstack_linked_list_iterator_init(&it, &goep_clients); 173 while (btstack_linked_list_iterator_has_next(&it)){ 174 goep_client_t * goep_client = (goep_client_t *) btstack_linked_list_iterator_next(&it); 175 if (goep_client->bearer_cid == bearer_cid){ 176 return goep_client; 177 } 178 } 179 return NULL; 180 } 181 182 static void goep_client_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 183 UNUSED(channel); 184 UNUSED(size); 185 goep_client_t * goep_client; 186 switch (packet_type){ 187 case HCI_EVENT_PACKET: 188 switch (hci_event_packet_get_type(packet)) { 189 #ifdef ENABLE_GOEP_L2CAP 190 case L2CAP_EVENT_CHANNEL_OPENED: 191 goep_client = goep_client_for_bearer_cid(l2cap_event_channel_opened_get_local_cid(packet)); 192 btstack_assert(goep_client != NULL); 193 goep_client_handle_connection_opened(goep_client, l2cap_event_channel_opened_get_status(packet), 194 btstack_min(l2cap_event_channel_opened_get_remote_mtu(packet), l2cap_event_channel_opened_get_local_mtu(packet))); 195 break; 196 case L2CAP_EVENT_CAN_SEND_NOW: 197 goep_client = goep_client_for_bearer_cid(l2cap_event_can_send_now_get_local_cid(packet)); 198 btstack_assert(goep_client != NULL); 199 goep_client_emit_can_send_now_event(goep_client); 200 break; 201 case L2CAP_EVENT_CHANNEL_CLOSED: 202 goep_client = goep_client_for_bearer_cid(l2cap_event_channel_closed_get_local_cid(packet)); 203 btstack_assert(goep_client != NULL); 204 goep_client_handle_connection_close(goep_client); 205 break; 206 #endif 207 case RFCOMM_EVENT_CHANNEL_OPENED: 208 goep_client = goep_client_for_bearer_cid(rfcomm_event_channel_opened_get_rfcomm_cid(packet)); 209 btstack_assert(goep_client != NULL); 210 goep_client_handle_connection_opened(goep_client, rfcomm_event_channel_opened_get_status(packet), rfcomm_event_channel_opened_get_max_frame_size(packet)); 211 return; 212 case RFCOMM_EVENT_CAN_SEND_NOW: 213 goep_client = goep_client_for_bearer_cid(rfcomm_event_can_send_now_get_rfcomm_cid(packet)); 214 btstack_assert(goep_client != NULL); 215 goep_client_emit_can_send_now_event(goep_client); 216 break; 217 case RFCOMM_EVENT_CHANNEL_CLOSED: 218 goep_client = goep_client_for_bearer_cid(rfcomm_event_channel_closed_get_rfcomm_cid(packet)); 219 btstack_assert(goep_client != NULL); 220 goep_client_handle_connection_close(goep_client); 221 break; 222 default: 223 break; 224 } 225 break; 226 case L2CAP_DATA_PACKET: 227 case RFCOMM_DATA_PACKET: 228 goep_client = goep_client_for_bearer_cid(channel); 229 btstack_assert(goep_client != NULL); 230 goep_client->client_handler(GOEP_DATA_PACKET, goep_client->cid, packet, size); 231 break; 232 default: 233 break; 234 } 235 } 236 237 static void goep_client_handle_sdp_query_end_of_record(goep_client_t * goep_client){ 238 if (goep_client->uuid == BLUETOOTH_SERVICE_CLASS_MESSAGE_ACCESS_SERVER){ 239 if (goep_client->mas_info.instance_id == goep_client->map_mas_instance_id){ 240 // Requested MAS Instance found, accept info 241 goep_client->rfcomm_port = goep_client->mas_info.rfcomm_port; 242 goep_client->profile_supported_features = goep_client->mas_info.supported_features; 243 goep_client->map_supported_message_types = goep_client->mas_info.supported_message_types; 244 #ifdef ENABLE_GOEP_L2CAP 245 goep_client->l2cap_psm = goep_client->mas_info.l2cap_psm; 246 log_info("MAS Instance #%u found, rfcomm #%u, l2cap 0x%04x", goep_client->map_mas_instance_id, 247 goep_client->rfcomm_port, goep_client->l2cap_psm); 248 #else 249 log_info("MAS Instance #%u found, rfcomm #%u", goep_client->map_mas_instance_id, 250 goep_client->rfcomm_port); 251 #endif 252 } 253 } 254 } 255 static uint8_t goep_client_start_connect(goep_client_t * goep_client){ 256 #ifdef ENABLE_GOEP_L2CAP 257 if (goep_client->l2cap_psm && (goep_client->ertm_buffer != NULL)){ 258 log_info("Remote GOEP L2CAP PSM: %u", goep_client->l2cap_psm); 259 return l2cap_ertm_create_channel(&goep_client_packet_handler, goep_client->bd_addr, goep_client->l2cap_psm, 260 &goep_client->ertm_config, goep_client->ertm_buffer, 261 goep_client->ertm_buffer_size, &goep_client->bearer_cid); 262 } 263 #endif 264 log_info("Remote GOEP RFCOMM Server Channel: %u", goep_client->rfcomm_port); 265 return rfcomm_create_channel(&goep_client_packet_handler, goep_client->bd_addr, goep_client->rfcomm_port, &goep_client->bearer_cid); 266 } 267 268 static void goep_client_handle_sdp_query_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 269 goep_client_t * goep_client = goep_client_sdp_active; 270 btstack_assert(goep_client != NULL); 271 272 UNUSED(packet_type); 273 UNUSED(channel); 274 UNUSED(size); 275 276 des_iterator_t des_list_it; 277 des_iterator_t prot_it; 278 uint8_t status; 279 uint16_t record_index; 280 bool goep_server_found; 281 282 switch (hci_event_packet_get_type(packet)){ 283 case SDP_EVENT_QUERY_ATTRIBUTE_VALUE: 284 285 // detect new record 286 record_index = sdp_event_query_attribute_byte_get_record_id(packet); 287 if (record_index != goep_client->record_index){ 288 goep_client->record_index = record_index; 289 goep_client_handle_sdp_query_end_of_record(goep_client); 290 memset(&goep_client->mas_info, 0, sizeof(goep_client->mas_info)); 291 } 292 293 // check if relevant attribute 294 switch(sdp_event_query_attribute_byte_get_attribute_id(packet)){ 295 case BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST: 296 case BLUETOOTH_ATTRIBUTE_PBAP_SUPPORTED_FEATURES: 297 case BLUETOOTH_ATTRIBUTE_MAS_INSTANCE_ID: 298 case BLUETOOTH_ATTRIBUTE_SUPPORTED_MESSAGE_TYPES: 299 #ifdef ENABLE_GOEP_L2CAP 300 case BLUETOOTH_ATTRIBUTE_GOEP_L2CAP_PSM: 301 #endif 302 break; 303 default: 304 return; 305 } 306 307 // warn if attribute too large to fit in our buffer 308 if (sdp_event_query_attribute_byte_get_attribute_length(packet) > goep_client_sdp_query_attribute_value_buffer_size) { 309 log_error("SDP attribute value size exceeded for attribute %x: available %d, required %d", sdp_event_query_attribute_byte_get_attribute_id(packet), goep_client_sdp_query_attribute_value_buffer_size, sdp_event_query_attribute_byte_get_attribute_length(packet)); 310 break; 311 } 312 313 // store single byte 314 goep_client_sdp_query_attribute_value[sdp_event_query_attribute_byte_get_data_offset(packet)] = sdp_event_query_attribute_byte_get_data(packet); 315 316 // wait until value fully received 317 if ((uint16_t)(sdp_event_query_attribute_byte_get_data_offset(packet)+1) != sdp_event_query_attribute_byte_get_attribute_length(packet)) break; 318 319 // process attributes 320 switch(sdp_event_query_attribute_byte_get_attribute_id(packet)) { 321 case BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST: 322 for (des_iterator_init(&des_list_it, goep_client_sdp_query_attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 323 uint8_t *des_element; 324 uint8_t *element; 325 uint32_t uuid; 326 327 if (des_iterator_get_type(&des_list_it) != DE_DES) continue; 328 329 des_element = des_iterator_get_element(&des_list_it); 330 des_iterator_init(&prot_it, des_element); 331 332 // first element is UUID 333 element = des_iterator_get_element(&prot_it); 334 if (de_get_element_type(element) != DE_UUID) continue; 335 336 uuid = de_get_uuid32(element); 337 des_iterator_next(&prot_it); 338 if (!des_iterator_has_more(&prot_it)) continue; 339 340 // second element is RFCOMM server channel or L2CAP PSM 341 element = des_iterator_get_element(&prot_it); 342 if (uuid == BLUETOOTH_PROTOCOL_RFCOMM){ 343 if (goep_client->uuid == BLUETOOTH_SERVICE_CLASS_MESSAGE_ACCESS_SERVER) { 344 goep_client->mas_info.rfcomm_port = element[de_get_header_size(element)]; 345 } else { 346 goep_client->rfcomm_port = element[de_get_header_size(element)]; 347 } 348 } 349 } 350 break; 351 #ifdef ENABLE_GOEP_L2CAP 352 case BLUETOOTH_ATTRIBUTE_GOEP_L2CAP_PSM: 353 if (goep_client->uuid == BLUETOOTH_SERVICE_CLASS_MESSAGE_ACCESS_SERVER){ 354 de_element_get_uint16(goep_client_sdp_query_attribute_value, &goep_client->mas_info.l2cap_psm); 355 } else { 356 de_element_get_uint16(goep_client_sdp_query_attribute_value, &goep_client->l2cap_psm); 357 } 358 break; 359 #endif 360 // BLUETOOTH_ATTRIBUTE_PBAP_SUPPORTED_FEATURES == BLUETOOTH_ATTRIBUTE_MAP_SUPPORTED_FEATURES == 0x0317 361 case BLUETOOTH_ATTRIBUTE_PBAP_SUPPORTED_FEATURES: 362 if (de_get_element_type(goep_client_sdp_query_attribute_value) != DE_UINT) break; 363 if (de_get_size_type(goep_client_sdp_query_attribute_value) != DE_SIZE_32) break; 364 if (goep_client->uuid == BLUETOOTH_SERVICE_CLASS_MESSAGE_ACCESS_SERVER) { 365 goep_client->mas_info.supported_features = big_endian_read_32(goep_client_sdp_query_attribute_value, de_get_header_size(goep_client_sdp_query_attribute_value)); 366 } else { 367 goep_client->profile_supported_features = big_endian_read_32(goep_client_sdp_query_attribute_value, de_get_header_size(goep_client_sdp_query_attribute_value)); 368 } 369 break; 370 371 case BLUETOOTH_ATTRIBUTE_MAS_INSTANCE_ID: 372 if (de_get_element_type(goep_client_sdp_query_attribute_value) != DE_UINT) break; 373 if (de_get_size_type(goep_client_sdp_query_attribute_value) != DE_SIZE_8) break; 374 goep_client->mas_info.instance_id = goep_client_sdp_query_attribute_value[de_get_header_size(goep_client_sdp_query_attribute_value)]; 375 break; 376 377 case BLUETOOTH_ATTRIBUTE_SUPPORTED_MESSAGE_TYPES: 378 if (de_get_element_type(goep_client_sdp_query_attribute_value) != DE_UINT) break; 379 if (de_get_size_type(goep_client_sdp_query_attribute_value) != DE_SIZE_8) break; 380 goep_client->mas_info.supported_message_types = goep_client_sdp_query_attribute_value[de_get_header_size(goep_client_sdp_query_attribute_value)]; 381 break; 382 383 default: 384 break; 385 } 386 break; 387 388 case SDP_EVENT_QUERY_COMPLETE: 389 goep_client_sdp_active = NULL; 390 goep_client_handle_sdp_query_end_of_record(goep_client); 391 status = sdp_event_query_complete_get_status(packet); 392 if (status != ERROR_CODE_SUCCESS){ 393 log_info("GOEP client, SDP query failed 0x%02x", status); 394 goep_client_handle_connection_opened(goep_client, status, 0); 395 break; 396 } 397 goep_server_found = false; 398 if (goep_client->rfcomm_port != 0){ 399 goep_server_found = true; 400 } 401 #ifdef ENABLE_GOEP_L2CAP 402 if (goep_client->l2cap_psm != 0){ 403 goep_server_found = true; 404 } 405 #endif 406 if (goep_server_found == false){ 407 log_info("No GOEP RFCOMM or L2CAP server found"); 408 goep_client_handle_connection_opened(goep_client, SDP_SERVICE_NOT_FOUND, 0); 409 break; 410 } 411 (void) goep_client_start_connect(goep_client); 412 break; 413 414 default: 415 break; 416 } 417 } 418 419 static uint8_t * goep_client_get_outgoing_buffer(goep_client_t * goep_client){ 420 if (goep_client->l2cap_psm){ 421 return goep_packet_buffer; 422 } else { 423 return rfcomm_get_outgoing_buffer(); 424 } 425 } 426 427 static uint16_t goep_client_get_outgoing_buffer_len(goep_client_t * goep_client){ 428 if (goep_client->l2cap_psm){ 429 return sizeof(goep_packet_buffer); 430 } else { 431 return rfcomm_get_max_frame_size(goep_client->bearer_cid); 432 } 433 } 434 435 static void goep_client_packet_init(goep_client_t *goep_client, uint8_t opcode) { 436 if (goep_client->l2cap_psm != 0){ 437 } else { 438 rfcomm_reserve_packet_buffer(); 439 } 440 // store opcode for parsing of response 441 goep_client->obex_opcode = opcode; 442 } 443 444 void goep_client_init(void){ 445 goep_client_singleton.state = GOEP_CLIENT_INIT; 446 } 447 448 void goep_client_deinit(void){ 449 goep_clients = NULL; 450 goep_client_cid = 0; 451 memset(&goep_client_singleton, 0, sizeof(goep_client_t)); 452 memset(goep_client_sdp_query_attribute_value, 0, sizeof(goep_client_sdp_query_attribute_value)); 453 memset(goep_packet_buffer, 0, sizeof(goep_packet_buffer)); 454 } 455 456 static void geop_client_sdp_query_start(void * context){ 457 uint16_t goep_cid = (uint16_t)(uintptr_t) context; 458 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 459 if (context != NULL){ 460 goep_client_sdp_active = goep_client; 461 sdp_client_query_uuid16(&goep_client_handle_sdp_query_event, goep_client->bd_addr, 462 goep_client->uuid); 463 } 464 } 465 466 uint8_t 467 goep_client_connect(goep_client_t *goep_client, l2cap_ertm_config_t *l2cap_ertm_config, uint8_t *l2cap_ertm_buffer, 468 uint16_t l2cap_ertm_buffer_size, btstack_packet_handler_t handler, bd_addr_t addr, uint16_t uuid, 469 uint8_t instance_id, uint16_t *out_cid) { 470 btstack_assert(goep_client != NULL); 471 472 // get new goep cid, skip 0x0000 473 goep_client_cid++; 474 if (goep_client_cid == 0) { 475 goep_client_cid = 1; 476 } 477 478 // add to list 479 memset(goep_client, 0, sizeof(goep_client_t)); 480 goep_client->state = GOEP_CLIENT_W4_SDP; 481 goep_client->cid = goep_client_cid; 482 goep_client->client_handler = handler; 483 goep_client->uuid = uuid; 484 goep_client->map_mas_instance_id = instance_id; 485 goep_client->profile_supported_features = PROFILE_FEATURES_NOT_PRESENT; 486 (void)memcpy(goep_client->bd_addr, addr, 6); 487 goep_client->sdp_query_request.callback = geop_client_sdp_query_start; 488 goep_client->sdp_query_request.context = (void *)(uintptr_t) goep_client->cid; 489 goep_client->obex_connection_id = OBEX_CONNECTION_ID_INVALID; 490 #ifdef ENABLE_GOEP_L2CAP 491 if (l2cap_ertm_config != NULL){ 492 memcpy(&goep_client->ertm_config, l2cap_ertm_config, sizeof(l2cap_ertm_config_t)); 493 } 494 goep_client->ertm_buffer_size = l2cap_ertm_buffer_size; 495 goep_client->ertm_buffer = l2cap_ertm_buffer; 496 #endif 497 btstack_linked_list_add(&goep_clients, (btstack_linked_item_t *) goep_client); 498 499 // request sdp query 500 sdp_client_register_query_callback(&goep_client->sdp_query_request); 501 502 *out_cid = goep_client->cid; 503 return ERROR_CODE_SUCCESS; 504 } 505 506 #ifdef ENABLE_GOEP_L2CAP 507 uint8_t goep_client_connect_l2cap(goep_client_t *goep_client, l2cap_ertm_config_t *l2cap_ertm_config, uint8_t *l2cap_ertm_buffer, 508 uint16_t l2cap_ertm_buffer_size, btstack_packet_handler_t handler, bd_addr_t addr, uint16_t l2cap_psm, 509 uint16_t *out_cid){ 510 btstack_assert(goep_client != NULL); 511 btstack_assert(l2cap_ertm_config != NULL); 512 btstack_assert(l2cap_ertm_buffer != NULL); 513 514 // get new goep cid, skip 0x0000 515 goep_client_cid++; 516 if (goep_client_cid == 0) { 517 goep_client_cid = 1; 518 } 519 520 // add to list 521 memset(goep_client, 0, sizeof(goep_client_t)); 522 goep_client->state = GOEP_CLIENT_W4_SDP; 523 goep_client->cid = goep_client_cid; 524 goep_client->client_handler = handler; 525 goep_client->profile_supported_features = PROFILE_FEATURES_NOT_PRESENT; 526 (void)memcpy(goep_client->bd_addr, addr, 6); 527 goep_client->obex_connection_id = OBEX_CONNECTION_ID_INVALID; 528 memcpy(&goep_client->ertm_config, l2cap_ertm_config, sizeof(l2cap_ertm_config_t)); 529 goep_client->ertm_buffer_size = l2cap_ertm_buffer_size; 530 goep_client->ertm_buffer = l2cap_ertm_buffer; 531 btstack_linked_list_add_tail(&goep_clients, (btstack_linked_item_t *) goep_client); 532 533 goep_client->l2cap_psm = l2cap_psm; 534 535 *out_cid = goep_client->cid; 536 537 return goep_client_start_connect(goep_client); 538 } 539 #endif 540 541 uint8_t goep_client_create_connection(btstack_packet_handler_t handler, bd_addr_t addr, uint16_t uuid, uint16_t * out_cid){ 542 goep_client_t * goep_client = &goep_client_singleton; 543 if (goep_client->state != GOEP_CLIENT_INIT) { 544 return BTSTACK_MEMORY_ALLOC_FAILED; 545 } 546 #ifdef ENABLE_GOEP_L2CAP 547 return goep_client_connect(goep_client, &goep_client_singleton_ertm_config, goep_client_singleton_ertm_buffer, 548 sizeof(goep_client_singleton_ertm_buffer), handler, addr, uuid, 0, out_cid); 549 #else 550 return goep_client_connect(goep_client,NULL, NULL, 0, handler, addr, uuid, 0, out_cid); 551 #endif 552 } 553 554 uint32_t goep_client_get_pbap_supported_features(uint16_t goep_cid){ 555 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 556 if (goep_client == NULL){ 557 return PBAP_FEATURES_NOT_PRESENT; 558 } 559 return goep_client->profile_supported_features; 560 } 561 562 uint32_t goep_client_get_map_supported_features(uint16_t goep_cid){ 563 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 564 if (goep_client == NULL){ 565 return PROFILE_FEATURES_NOT_PRESENT; 566 } 567 return goep_client->profile_supported_features; 568 } 569 570 uint8_t goep_client_get_map_mas_instance_id(uint16_t goep_cid){ 571 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 572 if (goep_client == NULL){ 573 return 0; 574 } 575 return goep_client->map_mas_instance_id; 576 } 577 578 uint8_t goep_client_get_map_supported_message_types(uint16_t goep_cid){ 579 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 580 if (goep_client == NULL){ 581 return 0; 582 } 583 return goep_client->map_supported_message_types; 584 } 585 586 587 bool goep_client_version_20_or_higher(uint16_t goep_cid){ 588 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 589 if (goep_client == NULL){ 590 return false; 591 } 592 return goep_client->l2cap_psm != 0; 593 } 594 595 void goep_client_request_can_send_now(uint16_t goep_cid){ 596 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 597 if (goep_client == NULL){ 598 return; 599 } 600 if (goep_client->l2cap_psm){ 601 l2cap_request_can_send_now_event(goep_client->bearer_cid); 602 } else { 603 rfcomm_request_can_send_now_event(goep_client->bearer_cid); 604 } 605 } 606 607 uint8_t goep_client_disconnect(uint16_t goep_cid){ 608 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 609 if (goep_client == NULL){ 610 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 611 } 612 if (goep_client->l2cap_psm){ 613 l2cap_disconnect(goep_client->bearer_cid); 614 } else { 615 rfcomm_disconnect(goep_client->bearer_cid); 616 } 617 return ERROR_CODE_SUCCESS; 618 } 619 620 void goep_client_set_connection_id(uint16_t goep_cid, uint32_t connection_id){ 621 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 622 if (goep_client == NULL){ 623 return; 624 } 625 goep_client->obex_connection_id = connection_id; 626 } 627 628 uint8_t goep_client_get_request_opcode(uint16_t goep_cid){ 629 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 630 if (goep_client == NULL){ 631 return 0; 632 } 633 return goep_client->obex_opcode; 634 } 635 636 void goep_client_request_create_connect(uint16_t goep_cid, uint8_t obex_version_number, uint8_t flags, uint16_t maximum_obex_packet_length){ 637 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 638 if (goep_client == NULL){ 639 return; 640 } 641 goep_client_packet_init(goep_client, OBEX_OPCODE_CONNECT); 642 // workaround: limit OBEX packet len to L2CAP/RFCOMM MTU to avoid handling of fragemented packets 643 maximum_obex_packet_length = btstack_min(maximum_obex_packet_length, goep_client->bearer_mtu); 644 645 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 646 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 647 obex_message_builder_request_create_connect(buffer, buffer_len, obex_version_number, flags, maximum_obex_packet_length); 648 } 649 650 void goep_client_request_create_get(uint16_t goep_cid){ 651 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 652 if (goep_client == NULL){ 653 return; 654 } 655 goep_client_packet_init(goep_client, OBEX_OPCODE_GET | OBEX_OPCODE_FINAL_BIT_MASK); 656 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 657 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 658 obex_message_builder_request_create_get(buffer, buffer_len, goep_client->obex_connection_id); 659 } 660 661 void goep_client_request_create_put(uint16_t goep_cid){ 662 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 663 if (goep_client == NULL){ 664 return; 665 } 666 goep_client_packet_init(goep_client, OBEX_OPCODE_PUT | OBEX_OPCODE_FINAL_BIT_MASK); 667 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 668 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 669 obex_message_builder_request_create_put(buffer, buffer_len, goep_client->obex_connection_id); 670 } 671 672 void goep_client_request_create_set_path(uint16_t goep_cid, uint8_t flags){ 673 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 674 if (goep_client == NULL){ 675 return; 676 } 677 goep_client_packet_init(goep_client, OBEX_OPCODE_SETPATH); 678 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 679 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 680 obex_message_builder_request_create_set_path(buffer, buffer_len, flags, goep_client->obex_connection_id); 681 } 682 683 void goep_client_request_create_abort(uint16_t goep_cid){ 684 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 685 if (goep_client == NULL){ 686 return; 687 } 688 goep_client_packet_init(goep_client, OBEX_OPCODE_ABORT); 689 690 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 691 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 692 obex_message_builder_request_create_abort(buffer, buffer_len, goep_client->obex_connection_id); 693 } 694 695 void goep_client_request_create_disconnect(uint16_t goep_cid){ 696 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 697 if (goep_client == NULL){ 698 return; 699 } 700 goep_client_packet_init(goep_client, OBEX_OPCODE_DISCONNECT); 701 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 702 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 703 obex_message_builder_request_create_disconnect(buffer, buffer_len, goep_client->obex_connection_id); 704 } 705 706 void goep_client_header_add_byte(uint16_t goep_cid, uint8_t header_type, uint8_t value){ 707 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 708 if (goep_client == NULL){ 709 return; 710 } 711 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 712 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 713 obex_message_builder_header_add_byte(buffer, buffer_len, header_type, value); 714 } 715 716 void goep_client_header_add_word(uint16_t goep_cid, uint8_t header_type, uint32_t value){ 717 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 718 if (goep_client == NULL){ 719 return; 720 } 721 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 722 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 723 obex_message_builder_header_add_word(buffer, buffer_len, header_type, value); 724 } 725 726 void goep_client_header_add_variable(uint16_t goep_cid, uint8_t header_type, const uint8_t * header_data, uint16_t header_data_length){ 727 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 728 if (goep_client == NULL){ 729 return; 730 } 731 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 732 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 733 obex_message_builder_header_add_variable(buffer, buffer_len, header_type, header_data, header_data_length); 734 } 735 736 void goep_client_header_add_srm_enable(uint16_t goep_cid){ 737 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 738 if (goep_client == NULL){ 739 return; 740 } 741 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 742 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 743 obex_message_builder_header_add_srm_enable(buffer, buffer_len); 744 } 745 746 void goep_client_header_add_target(uint16_t goep_cid, const uint8_t * target, uint16_t length){ 747 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 748 if (goep_client == NULL){ 749 return; 750 } 751 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 752 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 753 obex_message_builder_header_add_target(buffer, buffer_len, target, length); 754 } 755 756 void goep_client_header_add_application_parameters(uint16_t goep_cid, const uint8_t * data, uint16_t length){ 757 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 758 if (goep_client == NULL){ 759 return; 760 } 761 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 762 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 763 obex_message_builder_header_add_application_parameters(buffer, buffer_len, data, length); 764 } 765 766 void goep_client_header_add_challenge_response(uint16_t goep_cid, const uint8_t * data, uint16_t length){ 767 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 768 if (goep_client == NULL){ 769 return; 770 } 771 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 772 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 773 obex_message_builder_header_add_challenge_response(buffer, buffer_len, data, length); 774 } 775 776 void goep_client_body_add_static(uint16_t goep_cid, const uint8_t * data, uint32_t length){ 777 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 778 if (goep_client == NULL){ 779 return; 780 } 781 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 782 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 783 obex_message_builder_body_add_static(buffer, buffer_len, data, length); 784 } 785 786 uint16_t goep_client_body_get_outgoing_buffer_len(uint16_t goep_cid) { 787 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 788 if (goep_client == NULL){ 789 return 0; 790 } 791 return goep_client_get_outgoing_buffer_len(goep_client); 792 }; 793 794 void goep_client_body_fillup_static(uint16_t goep_cid, const uint8_t * data, uint32_t length, uint32_t * ret_length){ 795 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 796 if (goep_client == NULL){ 797 return; 798 } 799 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 800 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 801 obex_message_builder_body_fillup_static(buffer, buffer_len, data, length, ret_length); 802 } 803 804 void goep_client_header_add_name(uint16_t goep_cid, const char * name){ 805 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 806 if (goep_client == NULL){ 807 return; 808 } 809 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 810 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 811 obex_message_builder_header_add_name(buffer, buffer_len, name); 812 } 813 814 void goep_client_header_add_name_prefix(uint16_t goep_cid, const char * name, uint16_t name_len){ 815 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 816 if (goep_client == NULL){ 817 return; 818 } 819 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 820 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 821 obex_message_builder_header_add_name_prefix(buffer, buffer_len, name, name_len); 822 } 823 824 void goep_client_header_add_unicode_prefix(uint16_t goep_cid, uint8_t header_id, const char * name, uint16_t name_len){ 825 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 826 if (goep_client == NULL){ 827 return; 828 } 829 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 830 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 831 obex_message_builder_header_add_unicode_prefix(buffer, buffer_len, header_id, name, name_len); 832 } 833 834 void goep_client_header_add_type(uint16_t goep_cid, const char * type){ 835 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 836 if (goep_client == NULL){ 837 return; 838 } 839 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 840 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 841 obex_message_builder_header_add_type(buffer, buffer_len, type); 842 } 843 844 void goep_client_header_add_length(uint16_t goep_cid, uint32_t length){ 845 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 846 if (goep_client == NULL){ 847 return; 848 } 849 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 850 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 851 obex_message_builder_header_add_length(buffer, buffer_len, length); 852 } 853 854 uint16_t goep_client_request_get_max_body_size(uint16_t goep_cid){ 855 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 856 if (goep_client == NULL){ 857 return 0; 858 } 859 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 860 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 861 uint16_t pos = big_endian_read_16(buffer, 1); 862 return buffer_len - pos; 863 } 864 865 int goep_client_execute(uint16_t goep_cid){ 866 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 867 if (goep_client == NULL){ 868 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 869 } 870 return goep_client_execute_with_final_bit (goep_cid, true); 871 } 872 873 int goep_client_execute_with_final_bit(uint16_t goep_cid, bool final){ 874 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 875 if (goep_client == NULL){ 876 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 877 } 878 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 879 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 880 881 obex_message_builder_set_final_bit (buffer, buffer_len, final); 882 883 uint16_t pos = big_endian_read_16(buffer, 1); 884 if (goep_client->l2cap_psm){ 885 return l2cap_send(goep_client->bearer_cid, buffer, pos); 886 } else { 887 return rfcomm_send_prepared(goep_client->bearer_cid, pos); 888 } 889 } 890 891