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 log_info("MAS Instance #%u found", goep_client->map_mas_instance_id); 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 #endif 247 } 248 } 249 } 250 static uint8_t goep_client_start_connect(goep_client_t * goep_client){ 251 #ifdef ENABLE_GOEP_L2CAP 252 if (goep_client->l2cap_psm){ 253 log_info("Remote GOEP L2CAP PSM: %u", goep_client->l2cap_psm); 254 return l2cap_ertm_create_channel(&goep_client_packet_handler, goep_client->bd_addr, goep_client->l2cap_psm, 255 &goep_client->ertm_config, goep_client->ertm_buffer, 256 goep_client->ertm_buffer_size, &goep_client->bearer_cid); 257 } 258 #endif 259 log_info("Remote GOEP RFCOMM Server Channel: %u", goep_client->rfcomm_port); 260 return rfcomm_create_channel(&goep_client_packet_handler, goep_client->bd_addr, goep_client->rfcomm_port, &goep_client->bearer_cid); 261 } 262 263 static void goep_client_handle_sdp_query_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 264 goep_client_t * goep_client = goep_client_sdp_active; 265 btstack_assert(goep_client != NULL); 266 267 UNUSED(packet_type); 268 UNUSED(channel); 269 UNUSED(size); 270 271 des_iterator_t des_list_it; 272 des_iterator_t prot_it; 273 uint8_t status; 274 uint16_t record_index; 275 bool goep_server_found; 276 277 switch (hci_event_packet_get_type(packet)){ 278 case SDP_EVENT_QUERY_ATTRIBUTE_VALUE: 279 280 // detect new record 281 record_index = sdp_event_query_attribute_byte_get_record_id(packet); 282 if (record_index != goep_client->record_index){ 283 goep_client->record_index = record_index; 284 goep_client_handle_sdp_query_end_of_record(goep_client); 285 memset(&goep_client->mas_info, 0, sizeof(goep_client->mas_info)); 286 } 287 288 // check if relevant attribute 289 switch(sdp_event_query_attribute_byte_get_attribute_id(packet)){ 290 case BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST: 291 case BLUETOOTH_ATTRIBUTE_PBAP_SUPPORTED_FEATURES: 292 case BLUETOOTH_ATTRIBUTE_MAS_INSTANCE_ID: 293 case BLUETOOTH_ATTRIBUTE_SUPPORTED_MESSAGE_TYPES: 294 #ifdef ENABLE_GOEP_L2CAP 295 case BLUETOOTH_ATTRIBUTE_GOEP_L2CAP_PSM: 296 #endif 297 break; 298 default: 299 return; 300 } 301 302 // warn if attribute too large to fit in our buffer 303 if (sdp_event_query_attribute_byte_get_attribute_length(packet) > goep_client_sdp_query_attribute_value_buffer_size) { 304 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)); 305 break; 306 } 307 308 // store single byte 309 goep_client_sdp_query_attribute_value[sdp_event_query_attribute_byte_get_data_offset(packet)] = sdp_event_query_attribute_byte_get_data(packet); 310 311 // wait until value fully received 312 if ((uint16_t)(sdp_event_query_attribute_byte_get_data_offset(packet)+1) != sdp_event_query_attribute_byte_get_attribute_length(packet)) break; 313 314 // process attributes 315 switch(sdp_event_query_attribute_byte_get_attribute_id(packet)) { 316 case BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST: 317 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)) { 318 uint8_t *des_element; 319 uint8_t *element; 320 uint32_t uuid; 321 322 if (des_iterator_get_type(&des_list_it) != DE_DES) continue; 323 324 des_element = des_iterator_get_element(&des_list_it); 325 des_iterator_init(&prot_it, des_element); 326 327 // first element is UUID 328 element = des_iterator_get_element(&prot_it); 329 if (de_get_element_type(element) != DE_UUID) continue; 330 331 uuid = de_get_uuid32(element); 332 des_iterator_next(&prot_it); 333 if (!des_iterator_has_more(&prot_it)) continue; 334 335 // second element is RFCOMM server channel or L2CAP PSM 336 element = des_iterator_get_element(&prot_it); 337 if (uuid == BLUETOOTH_PROTOCOL_RFCOMM){ 338 if (goep_client->uuid == BLUETOOTH_SERVICE_CLASS_MESSAGE_ACCESS_SERVER) { 339 goep_client->mas_info.rfcomm_port = element[de_get_header_size(element)]; 340 } else { 341 goep_client->rfcomm_port = element[de_get_header_size(element)]; 342 } 343 } 344 } 345 break; 346 #ifdef ENABLE_GOEP_L2CAP 347 case BLUETOOTH_ATTRIBUTE_GOEP_L2CAP_PSM: 348 if (goep_client->uuid == BLUETOOTH_SERVICE_CLASS_MESSAGE_ACCESS_SERVER){ 349 de_element_get_uint16(goep_client_sdp_query_attribute_value, &goep_client->mas_info.l2cap_psm); 350 } else { 351 de_element_get_uint16(goep_client_sdp_query_attribute_value, &goep_client->l2cap_psm); 352 } 353 break; 354 #endif 355 // BLUETOOTH_ATTRIBUTE_PBAP_SUPPORTED_FEATURES == BLUETOOTH_ATTRIBUTE_MAP_SUPPORTED_FEATURES == 0x0317 356 case BLUETOOTH_ATTRIBUTE_PBAP_SUPPORTED_FEATURES: 357 if (de_get_element_type(goep_client_sdp_query_attribute_value) != DE_UINT) break; 358 if (de_get_size_type(goep_client_sdp_query_attribute_value) != DE_SIZE_32) break; 359 if (goep_client->uuid == BLUETOOTH_SERVICE_CLASS_MESSAGE_ACCESS_SERVER) { 360 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)); 361 } else { 362 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)); 363 } 364 break; 365 366 case BLUETOOTH_ATTRIBUTE_MAS_INSTANCE_ID: 367 if (de_get_element_type(goep_client_sdp_query_attribute_value) != DE_UINT) break; 368 if (de_get_size_type(goep_client_sdp_query_attribute_value) != DE_SIZE_8) break; 369 goep_client->mas_info.instance_id = goep_client_sdp_query_attribute_value[de_get_header_size(goep_client_sdp_query_attribute_value)]; 370 break; 371 372 case BLUETOOTH_ATTRIBUTE_SUPPORTED_MESSAGE_TYPES: 373 if (de_get_element_type(goep_client_sdp_query_attribute_value) != DE_UINT) break; 374 if (de_get_size_type(goep_client_sdp_query_attribute_value) != DE_SIZE_8) break; 375 goep_client->mas_info.supported_message_types = goep_client_sdp_query_attribute_value[de_get_header_size(goep_client_sdp_query_attribute_value)]; 376 break; 377 378 default: 379 break; 380 } 381 break; 382 383 case SDP_EVENT_QUERY_COMPLETE: 384 goep_client_sdp_active = NULL; 385 goep_client_handle_sdp_query_end_of_record(goep_client); 386 status = sdp_event_query_complete_get_status(packet); 387 if (status != ERROR_CODE_SUCCESS){ 388 log_info("GOEP client, SDP query failed 0x%02x", status); 389 goep_client->state = GOEP_CLIENT_INIT; 390 goep_client_emit_connected_event(goep_client, status); 391 break; 392 } 393 goep_server_found = false; 394 if (goep_client->rfcomm_port != 0){ 395 goep_server_found = true; 396 } 397 #ifdef ENABLE_GOEP_L2CAP 398 if (goep_client->l2cap_psm != 0){ 399 goep_server_found = true; 400 } 401 #endif 402 if (goep_server_found == false){ 403 log_info("No GOEP RFCOMM or L2CAP server found"); 404 goep_client->state = GOEP_CLIENT_INIT; 405 goep_client_emit_connected_event(goep_client, SDP_SERVICE_NOT_FOUND); 406 break; 407 } 408 (void) goep_client_start_connect(goep_client); 409 break; 410 411 default: 412 break; 413 } 414 } 415 416 static uint8_t * goep_client_get_outgoing_buffer(goep_client_t * goep_client){ 417 if (goep_client->l2cap_psm){ 418 return goep_packet_buffer; 419 } else { 420 return rfcomm_get_outgoing_buffer(); 421 } 422 } 423 424 static uint16_t goep_client_get_outgoing_buffer_len(goep_client_t * goep_client){ 425 if (goep_client->l2cap_psm){ 426 return sizeof(goep_packet_buffer); 427 } else { 428 return rfcomm_get_max_frame_size(goep_client->bearer_cid); 429 } 430 } 431 432 static void goep_client_packet_init(goep_client_t *goep_client, uint8_t opcode) { 433 if (goep_client->l2cap_psm != 0){ 434 } else { 435 rfcomm_reserve_packet_buffer(); 436 } 437 // store opcode for parsing of response 438 goep_client->obex_opcode = opcode; 439 } 440 441 void goep_client_init(void){ 442 goep_client_singleton.state = GOEP_CLIENT_INIT; 443 } 444 445 void goep_client_deinit(void){ 446 goep_clients = NULL; 447 goep_client_cid = 0; 448 memset(&goep_client_singleton, 0, sizeof(goep_client_t)); 449 memset(goep_client_sdp_query_attribute_value, 0, sizeof(goep_client_sdp_query_attribute_value)); 450 memset(goep_packet_buffer, 0, sizeof(goep_packet_buffer)); 451 } 452 453 static void geop_client_sdp_query_start(void * context){ 454 uint16_t goep_cid = (uint16_t)(uintptr_t) context; 455 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 456 if (context != NULL){ 457 goep_client_sdp_active = goep_client; 458 sdp_client_query_uuid16(&goep_client_handle_sdp_query_event, goep_client->bd_addr, 459 goep_client->uuid); 460 } 461 } 462 463 uint8_t 464 goep_client_connect(goep_client_t *goep_client, l2cap_ertm_config_t *l2cap_ertm_config, uint8_t *l2cap_ertm_buffer, 465 uint16_t l2cap_ertm_buffer_size, btstack_packet_handler_t handler, bd_addr_t addr, uint16_t uuid, 466 uint8_t instance_id, uint16_t *out_cid) { 467 // get new goep cid, skip 0x0000 468 goep_client_cid++; 469 if (goep_client_cid == 0) { 470 goep_client_cid = 1; 471 } 472 473 // add to list 474 memset(goep_client, 0, sizeof(goep_client_t)); 475 goep_client->state = GOEP_CLIENT_W4_SDP; 476 goep_client->cid = goep_client_cid; 477 goep_client->client_handler = handler; 478 goep_client->uuid = uuid; 479 goep_client->map_mas_instance_id = instance_id; 480 goep_client->profile_supported_features = PROFILE_FEATURES_NOT_PRESENT; 481 (void)memcpy(goep_client->bd_addr, addr, 6); 482 goep_client->sdp_query_request.callback = geop_client_sdp_query_start; 483 goep_client->sdp_query_request.context = (void *)(uintptr_t) goep_client->cid; 484 goep_client->obex_connection_id = OBEX_CONNECTION_ID_INVALID; 485 #ifdef ENABLE_GOEP_L2CAP 486 memcpy(&goep_client->ertm_config, l2cap_ertm_config, sizeof(l2cap_ertm_config_t)); 487 goep_client->ertm_buffer_size = l2cap_ertm_buffer_size; 488 goep_client->ertm_buffer = l2cap_ertm_buffer; 489 #endif 490 btstack_linked_list_add(&goep_clients, (btstack_linked_item_t *) goep_client); 491 492 // request sdp query 493 sdp_client_register_query_callback(&goep_client->sdp_query_request); 494 495 *out_cid = goep_client->cid; 496 return ERROR_CODE_SUCCESS; 497 } 498 499 #ifdef ENABLE_GOEP_L2CAP 500 uint8_t goep_client_connect_l2cap(goep_client_t *goep_client, l2cap_ertm_config_t *l2cap_ertm_config, uint8_t *l2cap_ertm_buffer, 501 uint16_t l2cap_ertm_buffer_size, btstack_packet_handler_t handler, bd_addr_t addr, uint16_t l2cap_psm, 502 uint16_t *out_cid){ 503 // get new goep cid, skip 0x0000 504 goep_client_cid++; 505 if (goep_client_cid == 0) { 506 goep_client_cid = 1; 507 } 508 509 // add to list 510 memset(goep_client, 0, sizeof(goep_client_t)); 511 goep_client->state = GOEP_CLIENT_W4_SDP; 512 goep_client->cid = goep_client_cid; 513 goep_client->client_handler = handler; 514 goep_client->profile_supported_features = PROFILE_FEATURES_NOT_PRESENT; 515 (void)memcpy(goep_client->bd_addr, addr, 6); 516 goep_client->obex_connection_id = OBEX_CONNECTION_ID_INVALID; 517 memcpy(&goep_client->ertm_config, l2cap_ertm_config, sizeof(l2cap_ertm_config_t)); 518 goep_client->ertm_buffer_size = l2cap_ertm_buffer_size; 519 goep_client->ertm_buffer = l2cap_ertm_buffer; 520 btstack_linked_list_add(&goep_clients, (btstack_linked_item_t *) goep_client); 521 522 goep_client->l2cap_psm = l2cap_psm; 523 524 *out_cid = goep_client->cid; 525 526 return goep_client_start_connect(goep_client); 527 } 528 #endif 529 530 uint8_t goep_client_create_connection(btstack_packet_handler_t handler, bd_addr_t addr, uint16_t uuid, uint16_t * out_cid){ 531 goep_client_t * goep_client = &goep_client_singleton; 532 if (goep_client->state != GOEP_CLIENT_INIT) { 533 return BTSTACK_MEMORY_ALLOC_FAILED; 534 } 535 #ifdef ENABLE_GOEP_L2CAP 536 return goep_client_connect(goep_client, &goep_client_singleton_ertm_config, goep_client_singleton_ertm_buffer, 537 sizeof(goep_client_singleton_ertm_buffer), handler, addr, uuid, 0, out_cid); 538 #else 539 return goep_client_connect(goep_client,NULL, NULL, 0, handler, addr, uuid, 0, out_cid); 540 #endif 541 } 542 543 uint32_t goep_client_get_pbap_supported_features(uint16_t goep_cid){ 544 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 545 if (goep_client == NULL){ 546 return PBAP_FEATURES_NOT_PRESENT; 547 } 548 return goep_client->profile_supported_features; 549 } 550 551 uint32_t goep_client_get_map_supported_features(uint16_t goep_cid){ 552 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 553 if (goep_client == NULL){ 554 return PROFILE_FEATURES_NOT_PRESENT; 555 } 556 return goep_client->profile_supported_features; 557 } 558 559 uint8_t goep_client_get_map_mas_instance_id(uint16_t goep_cid){ 560 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 561 if (goep_client == NULL){ 562 return 0; 563 } 564 return goep_client->map_mas_instance_id; 565 } 566 567 uint8_t goep_client_get_map_supported_message_types(uint16_t goep_cid){ 568 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 569 if (goep_client == NULL){ 570 return 0; 571 } 572 return goep_client->map_supported_message_types; 573 } 574 575 576 bool goep_client_version_20_or_higher(uint16_t goep_cid){ 577 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 578 if (goep_client == NULL){ 579 return false; 580 } 581 return goep_client->l2cap_psm != 0; 582 } 583 584 void goep_client_request_can_send_now(uint16_t goep_cid){ 585 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 586 if (goep_client == NULL){ 587 return; 588 } 589 if (goep_client->l2cap_psm){ 590 l2cap_request_can_send_now_event(goep_client->bearer_cid); 591 } else { 592 rfcomm_request_can_send_now_event(goep_client->bearer_cid); 593 } 594 } 595 596 uint8_t goep_client_disconnect(uint16_t goep_cid){ 597 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 598 if (goep_client == NULL){ 599 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 600 } 601 if (goep_client->l2cap_psm){ 602 l2cap_disconnect(goep_client->bearer_cid); 603 } else { 604 rfcomm_disconnect(goep_client->bearer_cid); 605 } 606 return ERROR_CODE_SUCCESS; 607 } 608 609 void goep_client_set_connection_id(uint16_t goep_cid, uint32_t connection_id){ 610 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 611 if (goep_client == NULL){ 612 return; 613 } 614 goep_client->obex_connection_id = connection_id; 615 } 616 617 uint8_t goep_client_get_request_opcode(uint16_t goep_cid){ 618 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 619 if (goep_client == NULL){ 620 return 0; 621 } 622 return goep_client->obex_opcode; 623 } 624 625 void goep_client_request_create_connect(uint16_t goep_cid, uint8_t obex_version_number, uint8_t flags, uint16_t maximum_obex_packet_length){ 626 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 627 if (goep_client == NULL){ 628 return; 629 } 630 goep_client_packet_init(goep_client, OBEX_OPCODE_CONNECT); 631 // workaround: limit OBEX packet len to L2CAP/RFCOMM MTU to avoid handling of fragemented packets 632 maximum_obex_packet_length = btstack_min(maximum_obex_packet_length, goep_client->bearer_mtu); 633 634 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 635 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 636 obex_message_builder_request_create_connect(buffer, buffer_len, obex_version_number, flags, maximum_obex_packet_length); 637 } 638 639 void goep_client_request_create_get(uint16_t goep_cid){ 640 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 641 if (goep_client == NULL){ 642 return; 643 } 644 goep_client_packet_init(goep_client, OBEX_OPCODE_GET | OBEX_OPCODE_FINAL_BIT_MASK); 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_get(buffer, buffer_len, goep_client->obex_connection_id); 648 } 649 650 void goep_client_request_create_put(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_PUT | 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_put(buffer, buffer_len, goep_client->obex_connection_id); 659 } 660 661 void goep_client_request_create_set_path(uint16_t goep_cid, uint8_t flags){ 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_SETPATH); 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_set_path(buffer, buffer_len, flags, goep_client->obex_connection_id); 670 } 671 672 void goep_client_request_create_abort(uint16_t goep_cid){ 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_ABORT); 678 679 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_abort(buffer, buffer_len, goep_client->obex_connection_id); 682 } 683 684 void goep_client_request_create_disconnect(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_DISCONNECT); 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_disconnect(buffer, buffer_len, goep_client->obex_connection_id); 693 } 694 695 void goep_client_header_add_byte(uint16_t goep_cid, uint8_t header_type, uint8_t value){ 696 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 697 if (goep_client == NULL){ 698 return; 699 } 700 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 701 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 702 obex_message_builder_header_add_byte(buffer, buffer_len, header_type, value); 703 } 704 705 void goep_client_header_add_word(uint16_t goep_cid, uint8_t header_type, uint32_t value){ 706 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 707 if (goep_client == NULL){ 708 return; 709 } 710 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 711 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 712 obex_message_builder_header_add_word(buffer, buffer_len, header_type, value); 713 } 714 715 void goep_client_header_add_variable(uint16_t goep_cid, uint8_t header_type, const uint8_t * header_data, uint16_t header_data_length){ 716 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 717 if (goep_client == NULL){ 718 return; 719 } 720 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 721 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 722 obex_message_builder_header_add_variable(buffer, buffer_len, header_type, header_data, header_data_length); 723 } 724 725 void goep_client_header_add_srm_enable(uint16_t goep_cid){ 726 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 727 if (goep_client == NULL){ 728 return; 729 } 730 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 731 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 732 obex_message_builder_header_add_srm_enable(buffer, buffer_len); 733 } 734 735 void goep_client_header_add_target(uint16_t goep_cid, const uint8_t * target, uint16_t length){ 736 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 737 if (goep_client == NULL){ 738 return; 739 } 740 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 741 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 742 obex_message_builder_header_add_target(buffer, buffer_len, target, length); 743 } 744 745 void goep_client_header_add_application_parameters(uint16_t goep_cid, const uint8_t * data, uint16_t length){ 746 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 747 if (goep_client == NULL){ 748 return; 749 } 750 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 751 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 752 obex_message_builder_header_add_application_parameters(buffer, buffer_len, data, length); 753 } 754 755 void goep_client_header_add_challenge_response(uint16_t goep_cid, const uint8_t * data, uint16_t length){ 756 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 757 if (goep_client == NULL){ 758 return; 759 } 760 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 761 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 762 obex_message_builder_header_add_challenge_response(buffer, buffer_len, data, length); 763 } 764 765 void goep_client_body_add_static(uint16_t goep_cid, const uint8_t * data, uint32_t length){ 766 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 767 if (goep_client == NULL){ 768 return; 769 } 770 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 771 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 772 obex_message_builder_body_add_static(buffer, buffer_len, data, length); 773 } 774 775 uint16_t goep_client_body_get_outgoing_buffer_len(uint16_t goep_cid) { 776 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 777 if (goep_client == NULL){ 778 return 0; 779 } 780 return goep_client_get_outgoing_buffer_len(goep_client); 781 }; 782 783 void goep_client_body_fillup_static(uint16_t goep_cid, const uint8_t * data, uint32_t length, uint32_t * ret_length){ 784 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 785 if (goep_client == NULL){ 786 return; 787 } 788 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 789 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 790 obex_message_builder_body_fillup_static(buffer, buffer_len, data, length, ret_length); 791 } 792 793 void goep_client_header_add_name(uint16_t goep_cid, const char * name){ 794 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 795 if (goep_client == NULL){ 796 return; 797 } 798 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 799 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 800 obex_message_builder_header_add_name(buffer, buffer_len, name); 801 } 802 803 void goep_client_header_add_name_prefix(uint16_t goep_cid, const char * name, uint16_t name_len){ 804 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 805 if (goep_client == NULL){ 806 return; 807 } 808 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 809 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 810 obex_message_builder_header_add_name_prefix(buffer, buffer_len, name, name_len); 811 } 812 813 void goep_client_header_add_unicode_prefix(uint16_t goep_cid, uint8_t header_id, const char * name, uint16_t name_len){ 814 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 815 if (goep_client == NULL){ 816 return; 817 } 818 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 819 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 820 obex_message_builder_header_add_unicode_prefix(buffer, buffer_len, header_id, name, name_len); 821 } 822 823 void goep_client_header_add_type(uint16_t goep_cid, const char * type){ 824 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 825 if (goep_client == NULL){ 826 return; 827 } 828 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 829 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 830 obex_message_builder_header_add_type(buffer, buffer_len, type); 831 } 832 833 void goep_client_header_add_length(uint16_t goep_cid, uint32_t length){ 834 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 835 if (goep_client == NULL){ 836 return; 837 } 838 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 839 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 840 obex_message_builder_header_add_length(buffer, buffer_len, length); 841 } 842 843 uint16_t goep_client_request_get_max_body_size(uint16_t goep_cid){ 844 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 845 if (goep_client == NULL){ 846 return 0; 847 } 848 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 849 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 850 uint16_t pos = big_endian_read_16(buffer, 1); 851 return buffer_len - pos; 852 } 853 854 int goep_client_execute(uint16_t goep_cid){ 855 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 856 if (goep_client == NULL){ 857 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 858 } 859 return goep_client_execute_with_final_bit (goep_cid, true); 860 } 861 862 int goep_client_execute_with_final_bit(uint16_t goep_cid, bool final){ 863 goep_client_t * goep_client = goep_client_for_cid(goep_cid); 864 if (goep_client == NULL){ 865 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 866 } 867 uint8_t * buffer = goep_client_get_outgoing_buffer(goep_client); 868 uint16_t buffer_len = goep_client_get_outgoing_buffer_len(goep_client); 869 870 obex_message_builder_set_final_bit (buffer, buffer_len, final); 871 872 uint16_t pos = big_endian_read_16(buffer, 1); 873 if (goep_client->l2cap_psm){ 874 return l2cap_send(goep_client->bearer_cid, buffer, pos); 875 } else { 876 return rfcomm_send_prepared(goep_client->bearer_cid, pos); 877 } 878 } 879 880