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 log_info("goep_client: open failed, status %u", status); 143 } else { 144 goep_client->bearer_mtu = mtu; 145 goep_client->state = GOEP_CLIENT_CONNECTED; 146 log_info("goep_client: connection opened. cid %u, max frame size %u", goep_client->bearer_cid, goep_client->bearer_mtu); 147 } 148 goep_client_emit_connected_event(goep_client, status); 149 } 150 151 static void goep_client_handle_connection_close(goep_client_t * goep_client){ 152 goep_client->state = GOEP_CLIENT_INIT; 153 btstack_linked_list_remove(&goep_clients, (btstack_linked_item_t *) goep_client); 154 goep_client_emit_connection_closed_event(goep_client); 155 } 156 157 static goep_client_t * goep_client_for_cid(uint16_t cid){ 158 btstack_linked_list_iterator_t it; 159 btstack_linked_list_iterator_init(&it, &goep_clients); 160 while (btstack_linked_list_iterator_has_next(&it)){ 161 goep_client_t * goep_client = (goep_client_t *) btstack_linked_list_iterator_next(&it); 162 if (goep_client->cid == cid){ 163 return goep_client; 164 } 165 } 166 return NULL; 167 } 168 169 static goep_client_t * goep_client_for_bearer_cid(uint16_t bearer_cid){ 170 btstack_linked_list_iterator_t it; 171 btstack_linked_list_iterator_init(&it, &goep_clients); 172 while (btstack_linked_list_iterator_has_next(&it)){ 173 goep_client_t * goep_client = (goep_client_t *) btstack_linked_list_iterator_next(&it); 174 if (goep_client->bearer_cid == bearer_cid){ 175 return goep_client; 176 } 177 } 178 return NULL; 179 } 180 181 static void goep_client_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 182 UNUSED(channel); 183 UNUSED(size); 184 goep_client_t * goep_client; 185 switch (packet_type){ 186 case HCI_EVENT_PACKET: 187 switch (hci_event_packet_get_type(packet)) { 188 #ifdef ENABLE_GOEP_L2CAP 189 case L2CAP_EVENT_CHANNEL_OPENED: 190 goep_client = goep_client_for_bearer_cid(l2cap_event_channel_opened_get_local_cid(packet)); 191 btstack_assert(goep_client != NULL); 192 goep_client_handle_connection_opened(goep_client, l2cap_event_channel_opened_get_status(packet), 193 btstack_min(l2cap_event_channel_opened_get_remote_mtu(packet), l2cap_event_channel_opened_get_local_mtu(packet))); 194 break; 195 case L2CAP_EVENT_CAN_SEND_NOW: 196 goep_client = goep_client_for_bearer_cid(l2cap_event_can_send_now_get_local_cid(packet)); 197 btstack_assert(goep_client != NULL); 198 goep_client_emit_can_send_now_event(goep_client); 199 break; 200 case L2CAP_EVENT_CHANNEL_CLOSED: 201 goep_client = goep_client_for_bearer_cid(l2cap_event_channel_closed_get_local_cid(packet)); 202 btstack_assert(goep_client != NULL); 203 goep_client_handle_connection_close(goep_client); 204 break; 205 #endif 206 case RFCOMM_EVENT_CHANNEL_OPENED: 207 goep_client = goep_client_for_bearer_cid(rfcomm_event_channel_opened_get_rfcomm_cid(packet)); 208 btstack_assert(goep_client != NULL); 209 goep_client_handle_connection_opened(goep_client, rfcomm_event_channel_opened_get_status(packet), rfcomm_event_channel_opened_get_max_frame_size(packet)); 210 return; 211 case RFCOMM_EVENT_CAN_SEND_NOW: 212 goep_client = goep_client_for_bearer_cid(rfcomm_event_can_send_now_get_rfcomm_cid(packet)); 213 btstack_assert(goep_client != NULL); 214 goep_client_emit_can_send_now_event(goep_client); 215 break; 216 case RFCOMM_EVENT_CHANNEL_CLOSED: 217 goep_client = goep_client_for_bearer_cid(rfcomm_event_channel_closed_get_rfcomm_cid(packet)); 218 btstack_assert(goep_client != NULL); 219 goep_client_handle_connection_close(goep_client); 220 break; 221 default: 222 break; 223 } 224 break; 225 case L2CAP_DATA_PACKET: 226 case RFCOMM_DATA_PACKET: 227 goep_client = goep_client_for_bearer_cid(channel); 228 btstack_assert(goep_client != NULL); 229 goep_client->client_handler(GOEP_DATA_PACKET, goep_client->cid, packet, size); 230 break; 231 default: 232 break; 233 } 234 } 235 236 static void goep_client_handle_sdp_query_end_of_record(goep_client_t * goep_client){ 237 if (goep_client->uuid == BLUETOOTH_SERVICE_CLASS_MESSAGE_ACCESS_SERVER){ 238 if (goep_client->mas_info.instance_id == goep_client->map_mas_instance_id){ 239 // Requested MAS Instance found, accept info 240 goep_client->rfcomm_port = goep_client->mas_info.rfcomm_port; 241 goep_client->profile_supported_features = goep_client->mas_info.supported_features; 242 goep_client->map_supported_message_types = goep_client->mas_info.supported_message_types; 243 #ifdef ENABLE_GOEP_L2CAP 244 goep_client->l2cap_psm = goep_client->mas_info.l2cap_psm; 245 log_info("MAS Instance #%u found, rfcomm #%u, l2cap 0x%04x", goep_client->map_mas_instance_id, 246 goep_client->rfcomm_port, goep_client->l2cap_psm); 247 #else 248 log_info("MAS Instance #%u found, rfcomm #%u", goep_client->map_mas_instance_id, 249 goep_client->rfcomm_port); 250 #endif 251 } 252 } 253 } 254 static uint8_t goep_client_start_connect(goep_client_t * goep_client){ 255 #ifdef ENABLE_GOEP_L2CAP 256 if (goep_client->l2cap_psm && (goep_client->ertm_buffer != NULL)){ 257 log_info("Remote GOEP L2CAP PSM: %u", goep_client->l2cap_psm); 258 return l2cap_ertm_create_channel(&goep_client_packet_handler, goep_client->bd_addr, goep_client->l2cap_psm, 259 &goep_client->ertm_config, goep_client->ertm_buffer, 260 goep_client->ertm_buffer_size, &goep_client->bearer_cid); 261 } 262 #endif 263 log_info("Remote GOEP RFCOMM Server Channel: %u", goep_client->rfcomm_port); 264 return rfcomm_create_channel(&goep_client_packet_handler, goep_client->bd_addr, goep_client->rfcomm_port, &goep_client->bearer_cid); 265 } 266 267 static void goep_client_handle_sdp_query_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 268 goep_client_t * goep_client = goep_client_sdp_active; 269 btstack_assert(goep_client != NULL); 270 271 UNUSED(packet_type); 272 UNUSED(channel); 273 UNUSED(size); 274 275 des_iterator_t des_list_it; 276 des_iterator_t prot_it; 277 uint8_t status; 278 uint16_t record_index; 279 bool goep_server_found; 280 281 switch (hci_event_packet_get_type(packet)){ 282 case SDP_EVENT_QUERY_ATTRIBUTE_VALUE: 283 284 // detect new record 285 record_index = sdp_event_query_attribute_byte_get_record_id(packet); 286 if (record_index != goep_client->record_index){ 287 goep_client->record_index = record_index; 288 goep_client_handle_sdp_query_end_of_record(goep_client); 289 memset(&goep_client->mas_info, 0, sizeof(goep_client->mas_info)); 290 } 291 292 // check if relevant attribute 293 switch(sdp_event_query_attribute_byte_get_attribute_id(packet)){ 294 case BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST: 295 case BLUETOOTH_ATTRIBUTE_PBAP_SUPPORTED_FEATURES: 296 case BLUETOOTH_ATTRIBUTE_MAS_INSTANCE_ID: 297 case BLUETOOTH_ATTRIBUTE_SUPPORTED_MESSAGE_TYPES: 298 #ifdef ENABLE_GOEP_L2CAP 299 case BLUETOOTH_ATTRIBUTE_GOEP_L2CAP_PSM: 300 #endif 301 break; 302 default: 303 return; 304 } 305 306 // warn if attribute too large to fit in our buffer 307 if (sdp_event_query_attribute_byte_get_attribute_length(packet) > goep_client_sdp_query_attribute_value_buffer_size) { 308 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)); 309 break; 310 } 311 312 // store single byte 313 goep_client_sdp_query_attribute_value[sdp_event_query_attribute_byte_get_data_offset(packet)] = sdp_event_query_attribute_byte_get_data(packet); 314 315 // wait until value fully received 316 if ((uint16_t)(sdp_event_query_attribute_byte_get_data_offset(packet)+1) != sdp_event_query_attribute_byte_get_attribute_length(packet)) break; 317 318 // process attributes 319 switch(sdp_event_query_attribute_byte_get_attribute_id(packet)) { 320 case BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST: 321 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)) { 322 uint8_t *des_element; 323 uint8_t *element; 324 uint32_t uuid; 325 326 if (des_iterator_get_type(&des_list_it) != DE_DES) continue; 327 328 des_element = des_iterator_get_element(&des_list_it); 329 des_iterator_init(&prot_it, des_element); 330 331 // first element is UUID 332 element = des_iterator_get_element(&prot_it); 333 if (de_get_element_type(element) != DE_UUID) continue; 334 335 uuid = de_get_uuid32(element); 336 des_iterator_next(&prot_it); 337 if (!des_iterator_has_more(&prot_it)) continue; 338 339 // second element is RFCOMM server channel or L2CAP PSM 340 element = des_iterator_get_element(&prot_it); 341 if (uuid == BLUETOOTH_PROTOCOL_RFCOMM){ 342 if (goep_client->uuid == BLUETOOTH_SERVICE_CLASS_MESSAGE_ACCESS_SERVER) { 343 goep_client->mas_info.rfcomm_port = element[de_get_header_size(element)]; 344 } else { 345 goep_client->rfcomm_port = element[de_get_header_size(element)]; 346 } 347 } 348 } 349 break; 350 #ifdef ENABLE_GOEP_L2CAP 351 case BLUETOOTH_ATTRIBUTE_GOEP_L2CAP_PSM: 352 if (goep_client->uuid == BLUETOOTH_SERVICE_CLASS_MESSAGE_ACCESS_SERVER){ 353 de_element_get_uint16(goep_client_sdp_query_attribute_value, &goep_client->mas_info.l2cap_psm); 354 } else { 355 de_element_get_uint16(goep_client_sdp_query_attribute_value, &goep_client->l2cap_psm); 356 } 357 break; 358 #endif 359 // BLUETOOTH_ATTRIBUTE_PBAP_SUPPORTED_FEATURES == BLUETOOTH_ATTRIBUTE_MAP_SUPPORTED_FEATURES == 0x0317 360 case BLUETOOTH_ATTRIBUTE_PBAP_SUPPORTED_FEATURES: 361 if (de_get_element_type(goep_client_sdp_query_attribute_value) != DE_UINT) break; 362 if (de_get_size_type(goep_client_sdp_query_attribute_value) != DE_SIZE_32) break; 363 if (goep_client->uuid == BLUETOOTH_SERVICE_CLASS_MESSAGE_ACCESS_SERVER) { 364 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)); 365 } else { 366 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)); 367 } 368 break; 369 370 case BLUETOOTH_ATTRIBUTE_MAS_INSTANCE_ID: 371 if (de_get_element_type(goep_client_sdp_query_attribute_value) != DE_UINT) break; 372 if (de_get_size_type(goep_client_sdp_query_attribute_value) != DE_SIZE_8) break; 373 goep_client->mas_info.instance_id = goep_client_sdp_query_attribute_value[de_get_header_size(goep_client_sdp_query_attribute_value)]; 374 break; 375 376 case BLUETOOTH_ATTRIBUTE_SUPPORTED_MESSAGE_TYPES: 377 if (de_get_element_type(goep_client_sdp_query_attribute_value) != DE_UINT) break; 378 if (de_get_size_type(goep_client_sdp_query_attribute_value) != DE_SIZE_8) break; 379 goep_client->mas_info.supported_message_types = goep_client_sdp_query_attribute_value[de_get_header_size(goep_client_sdp_query_attribute_value)]; 380 break; 381 382 default: 383 break; 384 } 385 break; 386 387 case SDP_EVENT_QUERY_COMPLETE: 388 goep_client_sdp_active = NULL; 389 goep_client_handle_sdp_query_end_of_record(goep_client); 390 status = sdp_event_query_complete_get_status(packet); 391 if (status != ERROR_CODE_SUCCESS){ 392 log_info("GOEP client, SDP query failed 0x%02x", status); 393 goep_client->state = GOEP_CLIENT_INIT; 394 goep_client_emit_connected_event(goep_client, status); 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->state = GOEP_CLIENT_INIT; 409 goep_client_emit_connected_event(goep_client, SDP_SERVICE_NOT_FOUND); 410 break; 411 } 412 (void) goep_client_start_connect(goep_client); 413 break; 414 415 default: 416 break; 417 } 418 } 419 420 static uint8_t * goep_client_get_outgoing_buffer(goep_client_t * goep_client){ 421 if (goep_client->l2cap_psm){ 422 return goep_packet_buffer; 423 } else { 424 return rfcomm_get_outgoing_buffer(); 425 } 426 } 427 428 static uint16_t goep_client_get_outgoing_buffer_len(goep_client_t * goep_client){ 429 if (goep_client->l2cap_psm){ 430 return sizeof(goep_packet_buffer); 431 } else { 432 return rfcomm_get_max_frame_size(goep_client->bearer_cid); 433 } 434 } 435 436 static void goep_client_packet_init(goep_client_t *goep_client, uint8_t opcode) { 437 if (goep_client->l2cap_psm != 0){ 438 } else { 439 rfcomm_reserve_packet_buffer(); 440 } 441 // store opcode for parsing of response 442 goep_client->obex_opcode = opcode; 443 } 444 445 void goep_client_init(void){ 446 goep_client_singleton.state = GOEP_CLIENT_INIT; 447 } 448 449 void goep_client_deinit(void){ 450 goep_clients = NULL; 451 goep_client_cid = 0; 452 memset(&goep_client_singleton, 0, sizeof(goep_client_t)); 453 memset(goep_client_sdp_query_attribute_value, 0, sizeof(goep_client_sdp_query_attribute_value)); 454 memset(goep_packet_buffer, 0, sizeof(goep_packet_buffer)); 455 } 456 457 static void geop_client_sdp_query_start(void * context){ 458 uint16_t goep_cid = (uint16_t)(uintptr_t) context; 459 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 460 if (context != NULL){ 461 goep_client_sdp_active = goep_client; 462 sdp_client_query_uuid16(&goep_client_handle_sdp_query_event, goep_client->bd_addr, 463 goep_client->uuid); 464 } 465 } 466 467 uint8_t 468 goep_client_connect(goep_client_t *goep_client, l2cap_ertm_config_t *l2cap_ertm_config, uint8_t *l2cap_ertm_buffer, 469 uint16_t l2cap_ertm_buffer_size, btstack_packet_handler_t handler, bd_addr_t addr, uint16_t uuid, 470 uint8_t instance_id, uint16_t *out_cid) { 471 btstack_assert(goep_client != NULL); 472 473 // get new goep cid, skip 0x0000 474 goep_client_cid++; 475 if (goep_client_cid == 0) { 476 goep_client_cid = 1; 477 } 478 479 // add to list 480 memset(goep_client, 0, sizeof(goep_client_t)); 481 goep_client->state = GOEP_CLIENT_W4_SDP; 482 goep_client->cid = goep_client_cid; 483 goep_client->client_handler = handler; 484 goep_client->uuid = uuid; 485 goep_client->map_mas_instance_id = instance_id; 486 goep_client->profile_supported_features = PROFILE_FEATURES_NOT_PRESENT; 487 (void)memcpy(goep_client->bd_addr, addr, 6); 488 goep_client->sdp_query_request.callback = geop_client_sdp_query_start; 489 goep_client->sdp_query_request.context = (void *)(uintptr_t) goep_client->cid; 490 goep_client->obex_connection_id = OBEX_CONNECTION_ID_INVALID; 491 #ifdef ENABLE_GOEP_L2CAP 492 if (l2cap_ertm_config != NULL){ 493 memcpy(&goep_client->ertm_config, l2cap_ertm_config, sizeof(l2cap_ertm_config_t)); 494 } 495 goep_client->ertm_buffer_size = l2cap_ertm_buffer_size; 496 goep_client->ertm_buffer = l2cap_ertm_buffer; 497 #endif 498 btstack_linked_list_add(&goep_clients, (btstack_linked_item_t *) goep_client); 499 500 // request sdp query 501 sdp_client_register_query_callback(&goep_client->sdp_query_request); 502 503 *out_cid = goep_client->cid; 504 return ERROR_CODE_SUCCESS; 505 } 506 507 #ifdef ENABLE_GOEP_L2CAP 508 uint8_t goep_client_connect_l2cap(goep_client_t *goep_client, l2cap_ertm_config_t *l2cap_ertm_config, uint8_t *l2cap_ertm_buffer, 509 uint16_t l2cap_ertm_buffer_size, btstack_packet_handler_t handler, bd_addr_t addr, uint16_t l2cap_psm, 510 uint16_t *out_cid){ 511 btstack_assert(goep_client != NULL); 512 btstack_assert(l2cap_ertm_config != NULL); 513 btstack_assert(l2cap_ertm_buffer != NULL); 514 515 // get new goep cid, skip 0x0000 516 goep_client_cid++; 517 if (goep_client_cid == 0) { 518 goep_client_cid = 1; 519 } 520 521 // add to list 522 memset(goep_client, 0, sizeof(goep_client_t)); 523 goep_client->state = GOEP_CLIENT_W4_SDP; 524 goep_client->cid = goep_client_cid; 525 goep_client->client_handler = handler; 526 goep_client->profile_supported_features = PROFILE_FEATURES_NOT_PRESENT; 527 (void)memcpy(goep_client->bd_addr, addr, 6); 528 goep_client->obex_connection_id = OBEX_CONNECTION_ID_INVALID; 529 memcpy(&goep_client->ertm_config, l2cap_ertm_config, sizeof(l2cap_ertm_config_t)); 530 goep_client->ertm_buffer_size = l2cap_ertm_buffer_size; 531 goep_client->ertm_buffer = l2cap_ertm_buffer; 532 btstack_linked_list_add(&goep_clients, (btstack_linked_item_t *) goep_client); 533 534 goep_client->l2cap_psm = l2cap_psm; 535 536 *out_cid = goep_client->cid; 537 538 return goep_client_start_connect(goep_client); 539 } 540 #endif 541 542 uint8_t goep_client_create_connection(btstack_packet_handler_t handler, bd_addr_t addr, uint16_t uuid, uint16_t * out_cid){ 543 goep_client_t * goep_client = &goep_client_singleton; 544 if (goep_client->state != GOEP_CLIENT_INIT) { 545 return BTSTACK_MEMORY_ALLOC_FAILED; 546 } 547 #ifdef ENABLE_GOEP_L2CAP 548 return goep_client_connect(goep_client, &goep_client_singleton_ertm_config, goep_client_singleton_ertm_buffer, 549 sizeof(goep_client_singleton_ertm_buffer), handler, addr, uuid, 0, out_cid); 550 #else 551 return goep_client_connect(goep_client,NULL, NULL, 0, handler, addr, uuid, 0, out_cid); 552 #endif 553 } 554 555 uint32_t goep_client_get_pbap_supported_features(uint16_t goep_cid){ 556 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 557 if (goep_client == NULL){ 558 return PBAP_FEATURES_NOT_PRESENT; 559 } 560 return goep_client->profile_supported_features; 561 } 562 563 uint32_t goep_client_get_map_supported_features(uint16_t goep_cid){ 564 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 565 if (goep_client == NULL){ 566 return PROFILE_FEATURES_NOT_PRESENT; 567 } 568 return goep_client->profile_supported_features; 569 } 570 571 uint8_t goep_client_get_map_mas_instance_id(uint16_t goep_cid){ 572 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 573 if (goep_client == NULL){ 574 return 0; 575 } 576 return goep_client->map_mas_instance_id; 577 } 578 579 uint8_t goep_client_get_map_supported_message_types(uint16_t goep_cid){ 580 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 581 if (goep_client == NULL){ 582 return 0; 583 } 584 return goep_client->map_supported_message_types; 585 } 586 587 588 bool goep_client_version_20_or_higher(uint16_t goep_cid){ 589 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 590 if (goep_client == NULL){ 591 return false; 592 } 593 return goep_client->l2cap_psm != 0; 594 } 595 596 void goep_client_request_can_send_now(uint16_t goep_cid){ 597 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 598 if (goep_client == NULL){ 599 return; 600 } 601 if (goep_client->l2cap_psm){ 602 l2cap_request_can_send_now_event(goep_client->bearer_cid); 603 } else { 604 rfcomm_request_can_send_now_event(goep_client->bearer_cid); 605 } 606 } 607 608 uint8_t goep_client_disconnect(uint16_t goep_cid){ 609 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 610 if (goep_client == NULL){ 611 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 612 } 613 if (goep_client->l2cap_psm){ 614 l2cap_disconnect(goep_client->bearer_cid); 615 } else { 616 rfcomm_disconnect(goep_client->bearer_cid); 617 } 618 return ERROR_CODE_SUCCESS; 619 } 620 621 void goep_client_set_connection_id(uint16_t goep_cid, uint32_t connection_id){ 622 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 623 if (goep_client == NULL){ 624 return; 625 } 626 goep_client->obex_connection_id = connection_id; 627 } 628 629 uint8_t goep_client_get_request_opcode(uint16_t goep_cid){ 630 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 631 if (goep_client == NULL){ 632 return 0; 633 } 634 return goep_client->obex_opcode; 635 } 636 637 void goep_client_request_create_connect(uint16_t goep_cid, uint8_t obex_version_number, uint8_t flags, uint16_t maximum_obex_packet_length){ 638 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 639 if (goep_client == NULL){ 640 return; 641 } 642 goep_client_packet_init(goep_client, OBEX_OPCODE_CONNECT); 643 // workaround: limit OBEX packet len to L2CAP/RFCOMM MTU to avoid handling of fragemented packets 644 maximum_obex_packet_length = btstack_min(maximum_obex_packet_length, goep_client->bearer_mtu); 645 646 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 647 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 648 obex_message_builder_request_create_connect(buffer, buffer_len, obex_version_number, flags, maximum_obex_packet_length); 649 } 650 651 void goep_client_request_create_get(uint16_t goep_cid){ 652 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 653 if (goep_client == NULL){ 654 return; 655 } 656 goep_client_packet_init(goep_client, OBEX_OPCODE_GET | OBEX_OPCODE_FINAL_BIT_MASK); 657 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 658 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 659 obex_message_builder_request_create_get(buffer, buffer_len, goep_client->obex_connection_id); 660 } 661 662 void goep_client_request_create_put(uint16_t goep_cid){ 663 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 664 if (goep_client == NULL){ 665 return; 666 } 667 goep_client_packet_init(goep_client, OBEX_OPCODE_PUT | OBEX_OPCODE_FINAL_BIT_MASK); 668 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 669 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 670 obex_message_builder_request_create_put(buffer, buffer_len, goep_client->obex_connection_id); 671 } 672 673 void goep_client_request_create_set_path(uint16_t goep_cid, uint8_t flags){ 674 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 675 if (goep_client == NULL){ 676 return; 677 } 678 goep_client_packet_init(goep_client, OBEX_OPCODE_SETPATH); 679 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 680 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 681 obex_message_builder_request_create_set_path(buffer, buffer_len, flags, goep_client->obex_connection_id); 682 } 683 684 void goep_client_request_create_abort(uint16_t goep_cid){ 685 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 686 if (goep_client == NULL){ 687 return; 688 } 689 goep_client_packet_init(goep_client, OBEX_OPCODE_ABORT); 690 691 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 692 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 693 obex_message_builder_request_create_abort(buffer, buffer_len, goep_client->obex_connection_id); 694 } 695 696 void goep_client_request_create_disconnect(uint16_t goep_cid){ 697 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 698 if (goep_client == NULL){ 699 return; 700 } 701 goep_client_packet_init(goep_client, OBEX_OPCODE_DISCONNECT); 702 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 703 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 704 obex_message_builder_request_create_disconnect(buffer, buffer_len, goep_client->obex_connection_id); 705 } 706 707 void goep_client_header_add_byte(uint16_t goep_cid, uint8_t header_type, uint8_t value){ 708 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 709 if (goep_client == NULL){ 710 return; 711 } 712 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 713 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 714 obex_message_builder_header_add_byte(buffer, buffer_len, header_type, value); 715 } 716 717 void goep_client_header_add_word(uint16_t goep_cid, uint8_t header_type, uint32_t value){ 718 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 719 if (goep_client == NULL){ 720 return; 721 } 722 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 723 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 724 obex_message_builder_header_add_word(buffer, buffer_len, header_type, value); 725 } 726 727 void goep_client_header_add_variable(uint16_t goep_cid, uint8_t header_type, const uint8_t * header_data, uint16_t header_data_length){ 728 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 729 if (goep_client == NULL){ 730 return; 731 } 732 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 733 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 734 obex_message_builder_header_add_variable(buffer, buffer_len, header_type, header_data, header_data_length); 735 } 736 737 void goep_client_header_add_srm_enable(uint16_t goep_cid){ 738 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 739 if (goep_client == NULL){ 740 return; 741 } 742 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 743 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 744 obex_message_builder_header_add_srm_enable(buffer, buffer_len); 745 } 746 747 void goep_client_header_add_target(uint16_t goep_cid, const uint8_t * target, uint16_t length){ 748 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 749 if (goep_client == NULL){ 750 return; 751 } 752 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 753 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 754 obex_message_builder_header_add_target(buffer, buffer_len, target, length); 755 } 756 757 void goep_client_header_add_application_parameters(uint16_t goep_cid, const uint8_t * data, uint16_t length){ 758 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 759 if (goep_client == NULL){ 760 return; 761 } 762 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 763 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 764 obex_message_builder_header_add_application_parameters(buffer, buffer_len, data, length); 765 } 766 767 void goep_client_header_add_challenge_response(uint16_t goep_cid, const uint8_t * data, uint16_t length){ 768 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 769 if (goep_client == NULL){ 770 return; 771 } 772 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 773 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 774 obex_message_builder_header_add_challenge_response(buffer, buffer_len, data, length); 775 } 776 777 void goep_client_body_add_static(uint16_t goep_cid, const uint8_t * data, uint32_t length){ 778 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 779 if (goep_client == NULL){ 780 return; 781 } 782 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 783 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 784 obex_message_builder_body_add_static(buffer, buffer_len, data, length); 785 } 786 787 uint16_t goep_client_body_get_outgoing_buffer_len(uint16_t goep_cid) { 788 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 789 if (goep_client == NULL){ 790 return 0; 791 } 792 return goep_client_get_outgoing_buffer_len(goep_client); 793 }; 794 795 void goep_client_body_fillup_static(uint16_t goep_cid, const uint8_t * data, uint32_t length, uint32_t * ret_length){ 796 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 797 if (goep_client == NULL){ 798 return; 799 } 800 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 801 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 802 obex_message_builder_body_fillup_static(buffer, buffer_len, data, length, ret_length); 803 } 804 805 void goep_client_header_add_name(uint16_t goep_cid, const char * name){ 806 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 807 if (goep_client == NULL){ 808 return; 809 } 810 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 811 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 812 obex_message_builder_header_add_name(buffer, buffer_len, name); 813 } 814 815 void goep_client_header_add_name_prefix(uint16_t goep_cid, const char * name, uint16_t name_len){ 816 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 817 if (goep_client == NULL){ 818 return; 819 } 820 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 821 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 822 obex_message_builder_header_add_name_prefix(buffer, buffer_len, name, name_len); 823 } 824 825 void goep_client_header_add_unicode_prefix(uint16_t goep_cid, uint8_t header_id, const char * name, uint16_t name_len){ 826 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 827 if (goep_client == NULL){ 828 return; 829 } 830 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 831 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 832 obex_message_builder_header_add_unicode_prefix(buffer, buffer_len, header_id, name, name_len); 833 } 834 835 void goep_client_header_add_type(uint16_t goep_cid, const char * type){ 836 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 837 if (goep_client == NULL){ 838 return; 839 } 840 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 841 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 842 obex_message_builder_header_add_type(buffer, buffer_len, type); 843 } 844 845 void goep_client_header_add_length(uint16_t goep_cid, uint32_t length){ 846 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 847 if (goep_client == NULL){ 848 return; 849 } 850 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 851 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 852 obex_message_builder_header_add_length(buffer, buffer_len, length); 853 } 854 855 uint16_t goep_client_request_get_max_body_size(uint16_t goep_cid){ 856 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 857 if (goep_client == NULL){ 858 return 0; 859 } 860 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 861 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 862 uint16_t pos = big_endian_read_16(buffer, 1); 863 return buffer_len - pos; 864 } 865 866 int goep_client_execute(uint16_t goep_cid){ 867 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 868 if (goep_client == NULL){ 869 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 870 } 871 return goep_client_execute_with_final_bit (goep_cid, true); 872 } 873 874 int goep_client_execute_with_final_bit(uint16_t goep_cid, bool final){ 875 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 876 if (goep_client == NULL){ 877 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 878 } 879 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 880 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 881 882 obex_message_builder_set_final_bit (buffer, buffer_len, final); 883 884 uint16_t pos = big_endian_read_16(buffer, 1); 885 if (goep_client->l2cap_psm){ 886 return l2cap_send(goep_client->bearer_cid, buffer, pos); 887 } else { 888 return rfcomm_send_prepared(goep_client->bearer_cid, pos); 889 } 890 } 891 892