1 /* 2 * Copyright (C) 2019 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "mesh_access.c" 39 40 #include <string.h> 41 #include <stdio.h> 42 #include <stdarg.h> 43 44 #include "mesh/mesh_access.h" 45 46 #include "btstack_debug.h" 47 #include "btstack_memory.h" 48 #include "btstack_tlv.h" 49 50 #include "mesh/beacon.h" 51 #include "mesh/mesh_foundation.h" 52 #include "mesh/mesh_iv_index_seq_number.h" 53 #include "mesh/mesh_node.h" 54 #include "mesh/mesh_proxy.h" 55 #include "mesh/mesh_upper_transport.h" 56 #include "mesh/mesh.h" 57 58 #define MEST_TRANSACTION_TIMEOUT_MS 6000 59 60 static void mesh_access_message_process_handler(mesh_pdu_t * pdu); 61 static void mesh_access_upper_transport_handler(mesh_transport_callback_type_t callback_type, mesh_transport_status_t status, mesh_pdu_t * pdu); 62 static const mesh_operation_t * mesh_model_lookup_operation_by_opcode(mesh_model_t * model, uint32_t opcode); 63 64 // receive 65 static uint16_t mesh_access_received_pdu_refcount; 66 67 // acknowledged messages 68 static btstack_linked_list_t mesh_access_acknowledged_messages; 69 static btstack_timer_source_t mesh_access_acknowledged_timer; 70 static int mesh_access_acknowledged_timer_active; 71 72 // Transitions 73 static uint8_t mesh_transaction_id_counter = 0; 74 75 void mesh_access_init(void){ 76 // register with upper transport 77 mesh_upper_transport_register_access_message_handler(&mesh_access_upper_transport_handler); 78 } 79 80 void mesh_access_emit_state_update_bool(btstack_packet_handler_t event_handler, uint8_t element_index, uint32_t model_identifier, 81 model_state_id_t state_identifier, model_state_update_reason_t reason, uint8_t value){ 82 if (event_handler == NULL) return; 83 uint8_t event[14] = {HCI_EVENT_MESH_META, 12, MESH_SUBEVENT_STATE_UPDATE_BOOL}; 84 int pos = 3; 85 event[pos++] = element_index; 86 little_endian_store_32(event, pos, model_identifier); 87 pos += 4; 88 little_endian_store_32(event, pos, (uint32_t)state_identifier); 89 pos += 4; 90 event[pos++] = (uint8_t)reason; 91 event[pos++] = value; 92 (*event_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 93 } 94 95 void mesh_access_emit_state_update_int16(btstack_packet_handler_t event_handler, uint8_t element_index, uint32_t model_identifier, 96 model_state_id_t state_identifier, model_state_update_reason_t reason, int16_t value){ 97 if (event_handler == NULL) return; 98 uint8_t event[15] = {HCI_EVENT_MESH_META, 13, MESH_SUBEVENT_STATE_UPDATE_BOOL}; 99 int pos = 3; 100 event[pos++] = element_index; 101 little_endian_store_32(event, pos, model_identifier); 102 pos += 4; 103 little_endian_store_32(event, pos, (uint32_t)state_identifier); 104 pos += 4; 105 event[pos++] = (uint8_t)reason; 106 little_endian_store_16(event, pos, (uint16_t) value); 107 pos += 2; 108 (*event_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 109 } 110 111 uint8_t mesh_access_acknowledged_message_retransmissions(void){ 112 return 3; 113 } 114 115 uint32_t mesh_access_acknowledged_message_timeout_ms(void){ 116 return 30000; 117 } 118 119 #define MESH_ACCESS_OPCODE_INVALID 0xFFFFFFFFu 120 #define MESH_ACCESS_OPCODE_NOT_SET 0xFFFFFFFEu 121 122 void mesh_access_send_unacknowledged_pdu(mesh_pdu_t * pdu){ 123 ((mesh_upper_transport_pdu_t *) pdu)->ack_opcode = MESH_ACCESS_OPCODE_INVALID; 124 mesh_upper_transport_send_access_pdu(pdu); 125 } 126 127 void mesh_access_send_acknowledged_pdu(mesh_pdu_t * pdu, uint8_t retransmissions, uint32_t ack_opcode){ 128 ((mesh_upper_transport_pdu_t *) pdu)->retransmit_count = retransmissions; 129 ((mesh_upper_transport_pdu_t *) pdu)->ack_opcode = ack_opcode; 130 131 mesh_upper_transport_send_access_pdu(pdu); 132 } 133 134 #define MESH_SUBEVENT_MESSAGE_NOT_ACKNOWLEDGED 0x30 135 136 static void mesh_access_acknowledged_run(btstack_timer_source_t * ts){ 137 UNUSED(ts); 138 139 uint32_t now = btstack_run_loop_get_time_ms(); 140 141 // handle timeouts 142 btstack_linked_list_iterator_t ack_it; 143 btstack_linked_list_iterator_init(&ack_it, &mesh_access_acknowledged_messages); 144 while (btstack_linked_list_iterator_has_next(&ack_it)){ 145 mesh_pdu_t * pdu = (mesh_pdu_t *) btstack_linked_list_iterator_next(&ack_it); 146 uint32_t retransmit_timeout_ms = ((mesh_upper_transport_pdu_t *) pdu)->retransmit_timeout_ms; 147 if (btstack_time_delta(now, retransmit_timeout_ms) >= 0) { 148 // remove from list 149 btstack_linked_list_remove(&mesh_access_acknowledged_messages, (btstack_linked_item_t*) pdu); 150 // retransmit or report failure 151 uint8_t retransmit_count = ((mesh_upper_transport_pdu_t *) pdu)->retransmit_count; 152 if (retransmit_count){ 153 ((mesh_upper_transport_pdu_t *) pdu)->retransmit_count = retransmit_count - 1; 154 mesh_upper_transport_send_access_pdu(pdu); 155 } else { 156 // find correct model and emit error 157 uint16_t src = mesh_pdu_src(pdu); 158 uint16_t dst = mesh_pdu_dst(pdu); 159 mesh_element_t * element = mesh_node_element_for_unicast_address(src); 160 if (element){ 161 // find 162 mesh_model_iterator_t model_it; 163 mesh_model_iterator_init(&model_it, element); 164 while (mesh_model_iterator_has_next(&model_it)){ 165 mesh_model_t * model = mesh_model_iterator_next(&model_it); 166 // find opcode in table 167 uint32_t ack_opcode = ((mesh_upper_transport_pdu_t *) pdu)->ack_opcode; 168 const mesh_operation_t * operation = mesh_model_lookup_operation_by_opcode(model, ack_opcode); 169 if (operation == NULL) continue; 170 if (model->model_packet_handler == NULL) continue; 171 // emit event 172 uint8_t event[13]; 173 event[0] = HCI_EVENT_MESH_META; 174 event[1] = sizeof(event) - 2; 175 event[2] = element->element_index; 176 little_endian_store_32(event, 3, model->model_identifier); 177 little_endian_store_32(event, 7, ack_opcode); 178 little_endian_store_16(event, 11, dst); 179 (*model->model_packet_handler)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 180 } 181 } 182 183 // free 184 mesh_upper_transport_pdu_free(pdu); 185 } 186 } 187 } 188 189 if (mesh_access_acknowledged_timer_active) return; 190 191 // find earliest timeout and set timer 192 btstack_linked_list_iterator_init(&ack_it, &mesh_access_acknowledged_messages); 193 int32_t next_timeout_ms = 0; 194 while (btstack_linked_list_iterator_has_next(&ack_it)){ 195 mesh_pdu_t * pdu = (mesh_pdu_t *) btstack_linked_list_iterator_next(&ack_it); 196 uint32_t retransmit_timeout_ms = ((mesh_upper_transport_pdu_t *) pdu)->retransmit_timeout_ms; 197 int32_t timeout_delta_ms = btstack_time_delta(retransmit_timeout_ms, now); 198 if (next_timeout_ms == 0 || timeout_delta_ms < next_timeout_ms){ 199 next_timeout_ms = timeout_delta_ms; 200 } 201 } 202 203 // set timer 204 if (next_timeout_ms == 0) return; 205 206 btstack_run_loop_set_timer(&mesh_access_acknowledged_timer, next_timeout_ms); 207 btstack_run_loop_set_timer_handler(&mesh_access_acknowledged_timer, mesh_access_acknowledged_run); 208 btstack_run_loop_add_timer(&mesh_access_acknowledged_timer); 209 mesh_access_acknowledged_timer_active = 1; 210 } 211 212 static void mesh_access_acknowledged_received(uint16_t rx_src, uint32_t opcode){ 213 // check if received src matches our dest 214 // free acknowledged messages if we were waiting for this message 215 216 btstack_linked_list_iterator_t ack_it; 217 btstack_linked_list_iterator_init(&ack_it, &mesh_access_acknowledged_messages); 218 while (btstack_linked_list_iterator_has_next(&ack_it)){ 219 mesh_pdu_t * tx_pdu = (mesh_pdu_t *) btstack_linked_list_iterator_next(&ack_it); 220 uint16_t tx_dest = mesh_pdu_dst(tx_pdu); 221 if (tx_dest != rx_src) continue; 222 if (((mesh_upper_transport_pdu_t *) tx_pdu)->ack_opcode != opcode) continue; 223 // got expected response from dest, remove from outgoing messages 224 mesh_upper_transport_pdu_free(tx_pdu); 225 return; 226 } 227 } 228 229 static void mesh_access_upper_transport_handler(mesh_transport_callback_type_t callback_type, mesh_transport_status_t status, mesh_pdu_t * pdu){ 230 UNUSED(status); 231 switch (callback_type){ 232 case MESH_TRANSPORT_PDU_RECEIVED: 233 mesh_access_message_process_handler(pdu); 234 break; 235 case MESH_TRANSPORT_PDU_SENT: 236 // unacknowledged -> free 237 { 238 if (((mesh_upper_transport_pdu_t *) pdu)->ack_opcode == MESH_ACCESS_OPCODE_INVALID){ 239 mesh_upper_transport_pdu_free(pdu); 240 break; 241 } 242 } 243 // setup timeout 244 uint32_t retransmitTimeoutMs = 245 btstack_run_loop_get_time_ms() + mesh_access_acknowledged_message_timeout_ms(); 246 ((mesh_upper_transport_pdu_t *) pdu)->retransmit_timeout_ms = retransmitTimeoutMs; 247 // add to mesh_access_acknowledged_messages 248 btstack_linked_list_add(&mesh_access_acknowledged_messages, (btstack_linked_item_t *) pdu); 249 // update timer 250 mesh_access_acknowledged_run(NULL); 251 break; 252 default: 253 break; 254 } 255 } 256 257 // Mesh Model Transitions 258 259 uint32_t mesh_access_time_gdtt2ms(uint8_t time_gdtt){ 260 uint8_t num_steps = mesh_access_transitions_num_steps_from_gdtt(time_gdtt); 261 if (num_steps > 0x3E) return 0; 262 263 return mesh_access_transitions_step_ms_from_gdtt(time_gdtt) * num_steps; 264 } 265 266 uint8_t mesh_access_transitions_num_steps_from_gdtt(uint8_t time_gdtt){ 267 return time_gdtt & 0x3fu; 268 } 269 270 uint32_t mesh_access_transitions_step_ms_from_gdtt(uint8_t time_gdtt){ 271 mesh_default_transition_step_resolution_t step_resolution = (mesh_default_transition_step_resolution_t) (time_gdtt >> 6); 272 switch (step_resolution){ 273 case MESH_DEFAULT_TRANSITION_STEP_RESOLUTION_100ms: 274 return 100; 275 case MESH_DEFAULT_TRANSITION_STEP_RESOLUTION_1s: 276 return 1000; 277 case MESH_DEFAULT_TRANSITION_STEP_RESOLUTION_10s: 278 return 10000; 279 case MESH_DEFAULT_TRANSITION_STEP_RESOLUTION_10min: 280 return 600000; 281 default: 282 return 0; 283 } 284 } 285 286 uint8_t mesh_access_transactions_get_next_transaction_id(void){ 287 mesh_transaction_id_counter++; 288 if (mesh_transaction_id_counter == 0){ 289 mesh_transaction_id_counter = 1; 290 } 291 return mesh_transaction_id_counter; 292 } 293 294 static int mesh_access_transitions_transaction_is_expired(mesh_transition_t * transition){ 295 return (btstack_run_loop_get_time_ms() - transition->transaction_timestamp_ms) > MEST_TRANSACTION_TIMEOUT_MS; 296 } 297 298 mesh_transaction_status_t mesh_access_transitions_transaction_status(mesh_transition_t * transition, uint8_t transaction_identifier, uint16_t src_address, uint16_t dst_address){ 299 if (transition->src_address != src_address || transition->dst_address != dst_address) return MESH_TRANSACTION_STATUS_DIFFERENT_DST_OR_SRC; 300 301 if (transition->transaction_identifier == transaction_identifier && !mesh_access_transitions_transaction_is_expired(transition)){ 302 return MESH_TRANSACTION_STATUS_RETRANSMISSION; 303 } 304 return MESH_TRANSACTION_STATUS_NEW; 305 } 306 307 void mesh_access_transitions_init_transaction(mesh_transition_t * transition, uint8_t transaction_identifier, uint16_t src_address, uint16_t dst_address){ 308 transition->transaction_timestamp_ms = btstack_run_loop_get_time_ms(); 309 transition->transaction_identifier = transaction_identifier; 310 transition->src_address = src_address; 311 transition->dst_address = dst_address; 312 } 313 314 static void mesh_server_transition_timeout(btstack_timer_source_t * ts){ 315 mesh_transition_t * base_transition = (mesh_transition_t*) btstack_run_loop_get_timer_context(ts); 316 switch (base_transition->state){ 317 case MESH_TRANSITION_STATE_DELAYED: 318 base_transition->state = MESH_TRANSITION_STATE_ACTIVE; 319 (*base_transition->transition_callback)(base_transition, MODEL_STATE_UPDATE_REASON_TRANSITION_START); 320 if (base_transition->num_steps > 0){ 321 btstack_run_loop_set_timer(&base_transition->timer, base_transition->step_duration_ms); 322 btstack_run_loop_add_timer(&base_transition->timer); 323 return; 324 } 325 base_transition->state = MESH_TRANSITION_STATE_IDLE; 326 (*base_transition->transition_callback)(base_transition, MODEL_STATE_UPDATE_REASON_TRANSITION_END); 327 break; 328 case MESH_TRANSITION_STATE_ACTIVE: 329 if (base_transition->num_steps < MESH_TRANSITION_NUM_STEPS_INFINITE){ 330 base_transition->num_steps--; 331 } 332 (*base_transition->transition_callback)(base_transition, MODEL_STATE_UPDATE_REASON_TRANSITION_ACTIVE); 333 if (base_transition->num_steps > 0){ 334 btstack_run_loop_set_timer(&base_transition->timer, base_transition->step_duration_ms); 335 btstack_run_loop_add_timer(&base_transition->timer); 336 return; 337 } 338 base_transition->state = MESH_TRANSITION_STATE_IDLE; 339 (*base_transition->transition_callback)(base_transition, MODEL_STATE_UPDATE_REASON_TRANSITION_END); 340 break; 341 default: 342 break; 343 } 344 } 345 346 void mesh_access_transition_setup(mesh_model_t *mesh_model, mesh_transition_t * base_transition, uint8_t transition_time_gdtt, uint8_t delay_time_gdtt, void (*transition_callback)(mesh_transition_t * base_transition, model_state_update_reason_t event)){ 347 348 base_transition->mesh_model = mesh_model; 349 base_transition->num_steps = mesh_access_transitions_num_steps_from_gdtt(transition_time_gdtt); 350 base_transition->step_resolution = (mesh_default_transition_step_resolution_t) (transition_time_gdtt >> 6); 351 base_transition->step_duration_ms = mesh_access_transitions_step_ms_from_gdtt(transition_time_gdtt); 352 base_transition->transition_callback = transition_callback; 353 354 btstack_run_loop_set_timer_context(&base_transition->timer, base_transition); 355 btstack_run_loop_set_timer_handler(&base_transition->timer, &mesh_server_transition_timeout); 356 357 // delayed 358 if (delay_time_gdtt > 0){ 359 base_transition->state = MESH_TRANSITION_STATE_DELAYED; 360 btstack_run_loop_set_timer(&base_transition->timer, delay_time_gdtt * 5); 361 btstack_run_loop_add_timer(&base_transition->timer); 362 return; 363 } 364 365 // started 366 if (base_transition->num_steps > 0){ 367 base_transition->state = MESH_TRANSITION_STATE_ACTIVE; 368 btstack_run_loop_set_timer(&base_transition->timer, base_transition->step_duration_ms); 369 btstack_run_loop_add_timer(&base_transition->timer); 370 return; 371 } 372 373 // instanteneous update 374 base_transition->state = MESH_TRANSITION_STATE_IDLE; 375 (*transition_callback)(base_transition, MODEL_STATE_UPDATE_REASON_SET); 376 return; 377 } 378 379 void mesh_access_transitions_abort_transaction(mesh_transition_t * base_transition){ 380 btstack_run_loop_add_timer(&base_transition->timer); 381 } 382 383 static uint16_t mesh_access_src(mesh_access_pdu_t * access_pdu){ 384 return access_pdu->src; 385 } 386 387 // Transport PDU Getter 388 uint16_t mesh_transport_nid(mesh_transport_pdu_t * transport_pdu){ 389 return transport_pdu->network_header[0] & 0x7f; 390 } 391 uint16_t mesh_transport_ctl(mesh_transport_pdu_t * transport_pdu){ 392 return transport_pdu->network_header[1] >> 7; 393 } 394 uint16_t mesh_transport_ttl(mesh_transport_pdu_t * transport_pdu){ 395 return transport_pdu->network_header[1] & 0x7f; 396 } 397 uint32_t mesh_transport_seq(mesh_transport_pdu_t * transport_pdu){ 398 return big_endian_read_24(transport_pdu->network_header, 2); 399 } 400 uint16_t mesh_transport_src(mesh_transport_pdu_t * transport_pdu){ 401 return big_endian_read_16(transport_pdu->network_header, 5); 402 } 403 uint16_t mesh_transport_dst(mesh_transport_pdu_t * transport_pdu){ 404 return big_endian_read_16(transport_pdu->network_header, 7); 405 } 406 uint8_t mesh_transport_control_opcode(mesh_transport_pdu_t * transport_pdu){ 407 return transport_pdu->akf_aid_control & 0x7f; 408 } 409 void mesh_transport_set_nid_ivi(mesh_transport_pdu_t * transport_pdu, uint8_t nid_ivi){ 410 transport_pdu->network_header[0] = nid_ivi; 411 } 412 void mesh_transport_set_ctl_ttl(mesh_transport_pdu_t * transport_pdu, uint8_t ctl_ttl){ 413 transport_pdu->network_header[1] = ctl_ttl; 414 } 415 void mesh_transport_set_seq(mesh_transport_pdu_t * transport_pdu, uint32_t seq){ 416 big_endian_store_24(transport_pdu->network_header, 2, seq); 417 } 418 void mesh_transport_set_src(mesh_transport_pdu_t * transport_pdu, uint16_t src){ 419 big_endian_store_16(transport_pdu->network_header, 5, src); 420 } 421 void mesh_transport_set_dest(mesh_transport_pdu_t * transport_pdu, uint16_t dest){ 422 big_endian_store_16(transport_pdu->network_header, 7, dest); 423 } 424 425 uint16_t mesh_pdu_ctl(mesh_pdu_t * pdu){ 426 switch (pdu->pdu_type){ 427 case MESH_PDU_TYPE_TRANSPORT: 428 return mesh_transport_ctl((mesh_transport_pdu_t*) pdu); 429 case MESH_PDU_TYPE_NETWORK: 430 return mesh_network_control((mesh_network_pdu_t *) pdu); 431 default: 432 btstack_assert(false); 433 return 0; 434 } 435 } 436 437 uint16_t mesh_pdu_ttl(mesh_pdu_t * pdu){ 438 switch (pdu->pdu_type){ 439 case MESH_PDU_TYPE_TRANSPORT: 440 return mesh_transport_ttl((mesh_transport_pdu_t*) pdu); 441 case MESH_PDU_TYPE_NETWORK: 442 return mesh_network_ttl((mesh_network_pdu_t *) pdu); 443 default: 444 btstack_assert(false); 445 return 0; 446 } 447 } 448 449 uint16_t mesh_pdu_src(mesh_pdu_t * pdu){ 450 switch (pdu->pdu_type){ 451 case MESH_PDU_TYPE_ACCESS: 452 return mesh_access_src((mesh_access_pdu_t *) pdu); 453 case MESH_PDU_TYPE_TRANSPORT: 454 return mesh_transport_src((mesh_transport_pdu_t*) pdu); 455 case MESH_PDU_TYPE_NETWORK: 456 return mesh_network_src((mesh_network_pdu_t *) pdu); 457 default: 458 btstack_assert(false); 459 return MESH_ADDRESS_UNSASSIGNED; 460 } 461 } 462 463 uint16_t mesh_pdu_dst(mesh_pdu_t * pdu){ 464 switch (pdu->pdu_type){ 465 case MESH_PDU_TYPE_ACCESS: { 466 return ((mesh_access_pdu_t *) pdu)->dst; 467 } 468 case MESH_PDU_TYPE_TRANSPORT: 469 return mesh_transport_dst((mesh_transport_pdu_t*) pdu); 470 case MESH_PDU_TYPE_NETWORK: 471 return mesh_network_dst((mesh_network_pdu_t *) pdu); 472 default: 473 btstack_assert(false); 474 return MESH_ADDRESS_UNSASSIGNED; 475 } 476 } 477 478 uint16_t mesh_pdu_netkey_index(mesh_pdu_t * pdu){ 479 switch (pdu->pdu_type){ 480 case MESH_PDU_TYPE_ACCESS: 481 return ((mesh_access_pdu_t*) pdu)->netkey_index; 482 case MESH_PDU_TYPE_TRANSPORT: 483 return ((mesh_transport_pdu_t*) pdu)->netkey_index; 484 case MESH_PDU_TYPE_NETWORK: 485 return ((mesh_network_pdu_t *) pdu)->netkey_index; 486 default: 487 btstack_assert(false); 488 return 0; 489 } 490 } 491 492 uint16_t mesh_pdu_appkey_index(mesh_pdu_t * pdu){ 493 switch (pdu->pdu_type){ 494 case MESH_PDU_TYPE_ACCESS: 495 return ((mesh_access_pdu_t*) pdu)->appkey_index; 496 case MESH_PDU_TYPE_TRANSPORT: 497 return ((mesh_transport_pdu_t*) pdu)->appkey_index; 498 default: 499 btstack_assert(false); 500 return 0; 501 } 502 } 503 504 uint16_t mesh_pdu_len(mesh_pdu_t * pdu){ 505 switch (pdu->pdu_type){ 506 case MESH_PDU_TYPE_ACCESS: 507 return ((mesh_access_pdu_t*) pdu)->len; 508 case MESH_PDU_TYPE_TRANSPORT: 509 return ((mesh_transport_pdu_t*) pdu)->len; 510 case MESH_PDU_TYPE_NETWORK: 511 return ((mesh_network_pdu_t *) pdu)->len - 10; 512 default: 513 btstack_assert(false); 514 return 0; 515 } 516 } 517 518 uint8_t * mesh_pdu_data(mesh_pdu_t * pdu){ 519 switch (pdu->pdu_type){ 520 case MESH_PDU_TYPE_ACCESS: 521 return ((mesh_access_pdu_t*) pdu)->data; 522 case MESH_PDU_TYPE_TRANSPORT: 523 return ((mesh_transport_pdu_t*) pdu)->data; 524 case MESH_PDU_TYPE_NETWORK: 525 return &((mesh_network_pdu_t *) pdu)->data[10]; 526 default: 527 btstack_assert(false); 528 return NULL; 529 } 530 } 531 532 uint8_t mesh_pdu_control_opcode(mesh_pdu_t * pdu){ 533 switch (pdu->pdu_type){ 534 case MESH_PDU_TYPE_TRANSPORT: 535 return mesh_transport_control_opcode((mesh_transport_pdu_t*) pdu); 536 case MESH_PDU_TYPE_NETWORK: 537 return mesh_network_control_opcode((mesh_network_pdu_t *) pdu); 538 default: 539 btstack_assert(false); 540 return 0xff; 541 } 542 } 543 544 // message parser 545 546 static int mesh_access_get_opcode(uint8_t * buffer, uint16_t buffer_size, uint32_t * opcode, uint16_t * opcode_size){ 547 switch (buffer[0] >> 6){ 548 case 0: 549 case 1: 550 if (buffer[0] == 0x7f) return 0; 551 *opcode = buffer[0]; 552 *opcode_size = 1; 553 return 1; 554 case 2: 555 if (buffer_size < 2) return 0; 556 *opcode = big_endian_read_16(buffer, 0); 557 *opcode_size = 2; 558 return 1; 559 case 3: 560 if (buffer_size < 3) return 0; 561 *opcode = (buffer[0] << 16) | little_endian_read_16(buffer, 1); 562 *opcode_size = 3; 563 return 1; 564 default: 565 return 0; 566 } 567 } 568 569 int mesh_access_pdu_get_opcode(mesh_pdu_t * pdu, uint32_t * opcode, uint16_t * opcode_size){ 570 btstack_assert(pdu->pdu_type == MESH_PDU_TYPE_ACCESS); 571 return mesh_access_get_opcode(((mesh_access_pdu_t *) pdu)->data, ((mesh_access_pdu_t *) pdu)->len, opcode, 572 opcode_size); 573 } 574 575 void mesh_access_parser_skip(mesh_access_parser_state_t * state, uint16_t bytes_to_skip){ 576 state->data += bytes_to_skip; 577 state->len -= bytes_to_skip; 578 } 579 580 int mesh_access_parser_init(mesh_access_parser_state_t * state, mesh_pdu_t * pdu){ 581 btstack_assert(pdu->pdu_type == MESH_PDU_TYPE_ACCESS); 582 state->data = mesh_pdu_data(pdu); 583 state->len = mesh_pdu_len(pdu); 584 585 uint16_t opcode_size = 0; 586 int ok = mesh_access_get_opcode(state->data, state->len, &state->opcode, &opcode_size); 587 if (ok){ 588 mesh_access_parser_skip(state, opcode_size); 589 } 590 return ok; 591 } 592 593 uint16_t mesh_access_parser_available(mesh_access_parser_state_t * state){ 594 return state->len; 595 } 596 597 uint8_t mesh_access_parser_get_u8(mesh_access_parser_state_t * state){ 598 uint8_t value = *state->data; 599 mesh_access_parser_skip(state, 1); 600 return value; 601 } 602 603 uint16_t mesh_access_parser_get_u16(mesh_access_parser_state_t * state){ 604 uint16_t value = little_endian_read_16(state->data, 0); 605 mesh_access_parser_skip(state, 2); 606 return value; 607 } 608 609 uint32_t mesh_access_parser_get_u24(mesh_access_parser_state_t * state){ 610 uint32_t value = little_endian_read_24(state->data, 0); 611 mesh_access_parser_skip(state, 3); 612 return value; 613 } 614 615 uint32_t mesh_access_parser_get_u32(mesh_access_parser_state_t * state){ 616 uint32_t value = little_endian_read_32(state->data, 0); 617 mesh_access_parser_skip(state, 4); 618 return value; 619 } 620 621 void mesh_access_parser_get_u128(mesh_access_parser_state_t * state, uint8_t * dest){ 622 reverse_128( state->data, dest); 623 mesh_access_parser_skip(state, 16); 624 } 625 626 void mesh_access_parser_get_label_uuid(mesh_access_parser_state_t * state, uint8_t * dest){ 627 (void)memcpy(dest, state->data, 16); 628 mesh_access_parser_skip(state, 16); 629 } 630 631 void mesh_access_parser_get_key(mesh_access_parser_state_t * state, uint8_t * dest){ 632 (void)memcpy(dest, state->data, 16); 633 mesh_access_parser_skip(state, 16); 634 } 635 636 uint32_t mesh_access_parser_get_model_identifier(mesh_access_parser_state_t * parser){ 637 uint16_t vendor_id = BLUETOOTH_COMPANY_ID_BLUETOOTH_SIG_INC; 638 if (mesh_access_parser_available(parser) == 4){ 639 vendor_id = mesh_access_parser_get_u16(parser); 640 } 641 uint16_t model_id = mesh_access_parser_get_u16(parser); 642 return mesh_model_get_model_identifier(vendor_id, model_id); 643 } 644 645 uint32_t mesh_access_parser_get_sig_model_identifier(mesh_access_parser_state_t * parser){ 646 uint16_t model_id = mesh_access_parser_get_u16(parser); 647 return mesh_model_get_model_identifier(BLUETOOTH_COMPANY_ID_BLUETOOTH_SIG_INC, model_id); 648 } 649 650 uint32_t mesh_access_parser_get_vendor_model_identifier(mesh_access_parser_state_t * parser){ 651 uint16_t vendor_id = mesh_access_parser_get_u16(parser); 652 uint16_t model_id = mesh_access_parser_get_u16(parser); 653 return mesh_model_get_model_identifier(vendor_id, model_id); 654 } 655 656 // Mesh Access Message Builder 657 658 // message builder 659 660 static int mesh_access_setup_opcode(uint8_t * buffer, uint32_t opcode){ 661 if (opcode < 0x100){ 662 buffer[0] = opcode; 663 return 1; 664 } 665 if (opcode < 0x10000){ 666 big_endian_store_16(buffer, 0, opcode); 667 return 2; 668 } 669 buffer[0] = opcode >> 16; 670 little_endian_store_16(buffer, 1, opcode & 0xffff); 671 return 3; 672 } 673 674 mesh_transport_pdu_t * mesh_access_transport_init(uint32_t opcode){ 675 mesh_transport_pdu_t * pdu = mesh_transport_pdu_get(); 676 if (!pdu) return NULL; 677 678 pdu->len = mesh_access_setup_opcode(pdu->data, opcode); 679 pdu->ack_opcode = MESH_ACCESS_OPCODE_NOT_SET; 680 return pdu; 681 } 682 683 void mesh_access_transport_add_uint8(mesh_transport_pdu_t * pdu, uint8_t value){ 684 pdu->data[pdu->len++] = value; 685 } 686 687 void mesh_access_transport_add_uint16(mesh_transport_pdu_t * pdu, uint16_t value){ 688 little_endian_store_16(pdu->data, pdu->len, value); 689 pdu->len += 2; 690 } 691 692 void mesh_access_transport_add_uint24(mesh_transport_pdu_t * pdu, uint32_t value){ 693 little_endian_store_24(pdu->data, pdu->len, value); 694 pdu->len += 3; 695 } 696 697 void mesh_access_transport_add_uint32(mesh_transport_pdu_t * pdu, uint32_t value){ 698 little_endian_store_32(pdu->data, pdu->len, value); 699 pdu->len += 4; 700 } 701 702 void mesh_access_transport_add_label_uuid(mesh_transport_pdu_t * pdu, uint8_t * value){ 703 (void)memcpy(value, pdu->data, 16); 704 pdu->len += 16; 705 } 706 707 void mesh_access_transport_add_model_identifier(mesh_transport_pdu_t * pdu, uint32_t model_identifier){ 708 if (!mesh_model_is_bluetooth_sig(model_identifier)){ 709 mesh_access_transport_add_uint16( pdu, mesh_model_get_vendor_id(model_identifier) ); 710 } 711 mesh_access_transport_add_uint16( pdu, mesh_model_get_model_id(model_identifier) ); 712 } 713 714 // mesh_message_t builder 715 mesh_segmented_pdu_t * mesh_access_message_init(uint32_t opcode, bool segmented, uint8_t num_segments){ 716 btstack_assert(num_segments > 0); 717 btstack_assert(segmented || (num_segments == 1)); 718 719 mesh_segmented_pdu_t * pdu = mesh_message_pdu_get(); 720 if (!pdu) return NULL; 721 722 // TODO: handle segmented messages 723 btstack_assert(segmented == false); 724 725 // use mesh_network_t as before 726 mesh_network_pdu_t * segment = mesh_network_pdu_get(); 727 if (segment == NULL){ 728 mesh_message_pdu_free(pdu); 729 return NULL; 730 } 731 btstack_linked_list_add(&pdu->segments, (btstack_linked_item_t *) segment); 732 733 pdu->len = mesh_access_setup_opcode(&segment->data[10], opcode) + 10; 734 pdu->ack_opcode = MESH_ACCESS_OPCODE_NOT_SET; 735 return pdu; 736 } 737 738 void mesh_access_message_add_uint8(mesh_segmented_pdu_t * pdu, uint8_t value){ 739 // TODO: handle segmented messages 740 mesh_network_pdu_t * segment = (mesh_network_pdu_t *) btstack_linked_list_get_first_item(&pdu->segments); 741 segment->data[pdu->len++] = value; 742 } 743 744 void mesh_access_message_add_uint16(mesh_segmented_pdu_t * pdu, uint16_t value){ 745 // TODO: handle segmented messages 746 mesh_network_pdu_t * segment = (mesh_network_pdu_t *) btstack_linked_list_get_first_item(&pdu->segments); 747 little_endian_store_16(segment->data, pdu->len, value); 748 pdu->len += 2; 749 } 750 751 void mesh_access_message_add_uint24(mesh_segmented_pdu_t * pdu, uint16_t value){ 752 // TODO: handle segmented messages 753 mesh_network_pdu_t * segment = (mesh_network_pdu_t *) btstack_linked_list_get_first_item(&pdu->segments); 754 little_endian_store_24(segment->data, pdu->len, value); 755 pdu->len += 3; 756 } 757 758 void mesh_access_message_add_uint32(mesh_segmented_pdu_t * pdu, uint16_t value){ 759 // TODO: handle segmented messages 760 mesh_network_pdu_t * segment = (mesh_network_pdu_t *) btstack_linked_list_get_first_item(&pdu->segments); 761 little_endian_store_32(segment->data, pdu->len, value); 762 pdu->len += 4; 763 } 764 765 void mesh_access_message_add_model_identifier(mesh_segmented_pdu_t * pdu, uint32_t model_identifier){ 766 if (mesh_model_is_bluetooth_sig(model_identifier)){ 767 mesh_access_message_add_uint16( pdu, mesh_model_get_model_id(model_identifier) ); 768 } else { 769 mesh_access_message_add_uint32( pdu, model_identifier ); 770 } 771 } 772 773 // access message template 774 mesh_segmented_pdu_t * mesh_access_setup_message(bool segmented, const mesh_access_message_t *message_template, ...){ 775 btstack_assert(segmented == false); 776 777 // TODO: handle segmented messages 778 mesh_segmented_pdu_t * message_pdu = mesh_access_message_init(message_template->opcode, segmented, 1); 779 if (!message_pdu) return NULL; 780 781 va_list argptr; 782 va_start(argptr, message_template); 783 784 // add params 785 const char * format = message_template->format; 786 uint16_t word; 787 uint32_t longword; 788 while (*format){ 789 switch (*format){ 790 case '1': 791 word = va_arg(argptr, int); // minimal va_arg is int: 2 bytes on 8+16 bit CPUs 792 mesh_access_message_add_uint8( message_pdu, word); 793 break; 794 case '2': 795 word = va_arg(argptr, int); // minimal va_arg is int: 2 bytes on 8+16 bit CPUs 796 mesh_access_message_add_uint16( message_pdu, word); 797 break; 798 case '3': 799 longword = va_arg(argptr, uint32_t); 800 mesh_access_message_add_uint24( message_pdu, longword); 801 break; 802 case '4': 803 longword = va_arg(argptr, uint32_t); 804 mesh_access_message_add_uint32( message_pdu, longword); 805 mesh_access_message_add_uint32( message_pdu, longword); 806 break; 807 case 'm': 808 longword = va_arg(argptr, uint32_t); 809 mesh_access_message_add_model_identifier( message_pdu, longword); 810 break; 811 default: 812 log_error("Unsupported mesh message format specifier '%c", *format); 813 break; 814 } 815 format++; 816 } 817 818 va_end(argptr); 819 820 return message_pdu; 821 } 822 823 mesh_transport_pdu_t * mesh_access_setup_segmented_message(const mesh_access_message_t *message_template, ...){ 824 mesh_transport_pdu_t * transport_pdu = mesh_access_transport_init(message_template->opcode); 825 if (!transport_pdu) return NULL; 826 827 va_list argptr; 828 va_start(argptr, message_template); 829 830 // add params 831 const char * format = message_template->format; 832 uint16_t word; 833 uint32_t longword; 834 uint8_t * ptr; 835 while (*format){ 836 switch (*format++){ 837 case '1': 838 word = va_arg(argptr, int); // minimal va_arg is int: 2 bytes on 8+16 bit CPUs 839 mesh_access_transport_add_uint8( transport_pdu, word); 840 break; 841 case '2': 842 word = va_arg(argptr, int); // minimal va_arg is int: 2 bytes on 8+16 bit CPUs 843 mesh_access_transport_add_uint16( transport_pdu, word); 844 break; 845 case '3': 846 longword = va_arg(argptr, uint32_t); 847 mesh_access_transport_add_uint24( transport_pdu, longword); 848 break; 849 case '4': 850 longword = va_arg(argptr, uint32_t); 851 mesh_access_transport_add_uint32( transport_pdu, longword); 852 break; 853 case 'P': // 16 byte, eg LabelUUID, in network endianess 854 ptr = va_arg(argptr, uint8_t *); 855 mesh_access_transport_add_label_uuid( transport_pdu, ptr); 856 break; 857 case 'm': 858 longword = va_arg(argptr, uint32_t); 859 mesh_access_transport_add_model_identifier( transport_pdu, longword); 860 break; 861 default: 862 break; 863 } 864 } 865 866 va_end(argptr); 867 868 return transport_pdu; 869 } 870 871 872 static const mesh_operation_t * mesh_model_lookup_operation_by_opcode(mesh_model_t * model, uint32_t opcode){ 873 // find opcode in table 874 const mesh_operation_t * operation = model->operations; 875 if (operation == NULL) return NULL; 876 for ( ; operation->handler != NULL ; operation++){ 877 if (operation->opcode != opcode) continue; 878 return operation; 879 } 880 return NULL; 881 } 882 883 static const mesh_operation_t * mesh_model_lookup_operation(mesh_model_t * model, mesh_pdu_t * pdu){ 884 885 uint32_t opcode = 0; 886 uint16_t opcode_size = 0; 887 int ok = mesh_access_pdu_get_opcode( pdu, &opcode, &opcode_size); 888 if (!ok) return NULL; 889 890 uint16_t len = mesh_pdu_len(pdu); 891 892 // find opcode in table 893 const mesh_operation_t * operation = model->operations; 894 if (operation == NULL) return NULL; 895 for ( ; operation->handler != NULL ; operation++){ 896 if (operation->opcode != opcode) continue; 897 if ((opcode_size + operation->minimum_length) > len) continue; 898 return operation; 899 } 900 return NULL; 901 } 902 903 static int mesh_access_validate_appkey_index(mesh_model_t * model, uint16_t appkey_index){ 904 // DeviceKey is valid for all models 905 if (appkey_index == MESH_DEVICE_KEY_INDEX) return 1; 906 // check if AppKey that is bound to this particular model 907 return mesh_model_contains_appkey(model, appkey_index); 908 } 909 910 // decrease use count and report as free if done 911 void mesh_access_message_processed(mesh_pdu_t * pdu){ 912 if (mesh_access_received_pdu_refcount > 0){ 913 mesh_access_received_pdu_refcount--; 914 } 915 if (mesh_access_received_pdu_refcount == 0){ 916 mesh_upper_transport_message_processed_by_higher_layer(pdu); 917 } 918 } 919 920 static void mesh_access_message_process_handler(mesh_pdu_t * pdu){ 921 922 // init use count 923 mesh_access_received_pdu_refcount = 1; 924 925 // get opcode and size 926 uint32_t opcode = 0; 927 uint16_t opcode_size = 0; 928 929 int ok = mesh_access_pdu_get_opcode( pdu, &opcode, &opcode_size); 930 if (!ok) { 931 mesh_access_message_processed(pdu); 932 return; 933 } 934 935 uint16_t len = mesh_pdu_len(pdu); 936 printf("MESH Access Message, Opcode = %x: ", opcode); 937 printf_hexdump(mesh_pdu_data(pdu), len); 938 939 uint16_t src = mesh_pdu_src(pdu); 940 uint16_t dst = mesh_pdu_dst(pdu); 941 uint16_t appkey_index = mesh_pdu_appkey_index(pdu); 942 if (mesh_network_address_unicast(dst)){ 943 // loookup element by unicast address 944 mesh_element_t * element = mesh_node_element_for_unicast_address(dst); 945 if (element != NULL){ 946 // iterate over models, look for operation 947 mesh_model_iterator_t model_it; 948 mesh_model_iterator_init(&model_it, element); 949 while (mesh_model_iterator_has_next(&model_it)){ 950 mesh_model_t * model = mesh_model_iterator_next(&model_it); 951 // find opcode in table 952 const mesh_operation_t * operation = mesh_model_lookup_operation(model, pdu); 953 if (operation == NULL) continue; 954 if (mesh_access_validate_appkey_index(model, appkey_index) == 0) continue; 955 mesh_access_acknowledged_received(src, opcode); 956 mesh_access_received_pdu_refcount++; 957 operation->handler(model, pdu); 958 } 959 } 960 } 961 else if (mesh_network_address_group(dst)){ 962 963 // handle fixed group address 964 if (dst >= 0xff00){ 965 int deliver_to_primary_element = 1; 966 switch (dst){ 967 case MESH_ADDRESS_ALL_PROXIES: 968 if (mesh_foundation_gatt_proxy_get() == 1){ 969 deliver_to_primary_element = 1; 970 } 971 break; 972 case MESH_ADDRESS_ALL_FRIENDS: 973 // TODO: not implemented 974 break; 975 case MESH_ADDRESS_ALL_RELAYS: 976 if (mesh_foundation_relay_get() == 1){ 977 deliver_to_primary_element = 1; 978 } 979 break; 980 case MESH_ADDRESS_ALL_NODES: 981 deliver_to_primary_element = 1; 982 break; 983 default: 984 break; 985 } 986 if (deliver_to_primary_element){ 987 mesh_model_iterator_t model_it; 988 mesh_model_iterator_init(&model_it, mesh_node_get_primary_element()); 989 while (mesh_model_iterator_has_next(&model_it)){ 990 mesh_model_t * model = mesh_model_iterator_next(&model_it); 991 // find opcode in table 992 const mesh_operation_t * operation = mesh_model_lookup_operation(model, pdu); 993 if (operation == NULL) continue; 994 if (mesh_access_validate_appkey_index(model, appkey_index) == 0) continue; 995 mesh_access_acknowledged_received(src, opcode); 996 mesh_access_received_pdu_refcount++; 997 operation->handler(model, pdu); 998 } 999 } 1000 } 1001 else { 1002 // iterate over all elements / models, check subscription list 1003 mesh_element_iterator_t it; 1004 mesh_element_iterator_init(&it); 1005 while (mesh_element_iterator_has_next(&it)){ 1006 mesh_element_t * element = (mesh_element_t *) mesh_element_iterator_next(&it); 1007 mesh_model_iterator_t model_it; 1008 mesh_model_iterator_init(&model_it, element); 1009 while (mesh_model_iterator_has_next(&model_it)){ 1010 mesh_model_t * model = mesh_model_iterator_next(&model_it); 1011 if (mesh_model_contains_subscription(model, dst)){ 1012 // find opcode in table 1013 const mesh_operation_t * operation = mesh_model_lookup_operation(model, pdu); 1014 if (operation == NULL) continue; 1015 if (mesh_access_validate_appkey_index(model, appkey_index) == 0) continue; 1016 mesh_access_acknowledged_received(src, opcode); 1017 mesh_access_received_pdu_refcount++; 1018 operation->handler(model, pdu); 1019 } 1020 } 1021 } 1022 } 1023 } 1024 1025 // we're done 1026 mesh_access_message_processed(pdu); 1027 } 1028 1029 // Mesh Model Publication 1030 static btstack_timer_source_t mesh_access_publication_timer; 1031 1032 static uint32_t mesh_model_publication_retransmit_count(uint8_t retransmit){ 1033 return retransmit & 0x07u; 1034 } 1035 1036 static uint32_t mesh_model_publication_retransmission_period_ms(uint8_t retransmit){ 1037 return ((uint32_t)((retransmit >> 3) + 1)) * 50; 1038 } 1039 1040 static void mesh_model_publication_setup_publication(mesh_publication_model_t * publication_model, uint32_t now){ 1041 1042 // set retransmit counter 1043 publication_model->retransmit_count = mesh_model_publication_retransmit_count(publication_model->retransmit); 1044 1045 // schedule next publication or retransmission 1046 uint32_t publication_period_ms = mesh_access_time_gdtt2ms(publication_model->period) >> publication_model->period_divisor; 1047 1048 // set next publication 1049 if (publication_period_ms != 0){ 1050 publication_model->next_publication_ms = now + publication_period_ms; 1051 publication_model->state = MESH_MODEL_PUBLICATION_STATE_W4_PUBLICATION_MS; 1052 } else { 1053 publication_model->state = MESH_MODEL_PUBLICATION_STATE_IDLE; 1054 } 1055 } 1056 1057 // assumes retransmit_count is valid 1058 static void mesh_model_publication_setup_retransmission(mesh_publication_model_t * publication_model, uint32_t now){ 1059 uint32_t publication_period_ms = mesh_access_time_gdtt2ms(publication_model->period) >> publication_model->period_divisor; 1060 1061 // retransmission done 1062 if (publication_model->retransmit_count == 0) { 1063 // wait for next main event if periodic and retransmission complete 1064 if (publication_period_ms != 0){ 1065 publication_model->state = MESH_MODEL_PUBLICATION_STATE_W4_PUBLICATION_MS; 1066 } else { 1067 publication_model->state = MESH_MODEL_PUBLICATION_STATE_IDLE; 1068 } 1069 return; 1070 } 1071 1072 // calc next retransmit time 1073 uint32_t retransmission_period_ms = mesh_model_publication_retransmission_period_ms(publication_model->retransmit) >> publication_model->period_divisor; 1074 uint32_t retransmission_ms = now + retransmission_period_ms; 1075 1076 // check next publication timeout is before next retransmission 1077 if (publication_period_ms != 0){ 1078 if (btstack_time_delta(retransmission_ms, publication_model->next_publication_ms) > 0) return; 1079 } 1080 1081 // schedule next retransmission 1082 publication_model->next_retransmit_ms = retransmission_ms; 1083 publication_model->state = MESH_MODEL_PUBLICATION_STATE_W4_RETRANSMIT_MS; 1084 } 1085 1086 static void mesh_model_publication_publish_now_model(mesh_model_t * mesh_model){ 1087 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1088 if (publication_model == NULL) return; 1089 if (publication_model->publish_state_fn == NULL) return; 1090 uint16_t dest = publication_model->address; 1091 if (dest == MESH_ADDRESS_UNSASSIGNED) return; 1092 uint16_t appkey_index = publication_model->appkey_index; 1093 mesh_transport_key_t * app_key = mesh_transport_key_get(appkey_index); 1094 if (app_key == NULL) return; 1095 1096 // compose message 1097 mesh_pdu_t * pdu = (*publication_model->publish_state_fn)(mesh_model); 1098 if (pdu == NULL) return; 1099 1100 // handle ttl = default 1101 uint8_t ttl = publication_model->ttl; 1102 if (ttl == 0xff){ 1103 ttl = mesh_foundation_default_ttl_get(); 1104 } 1105 1106 mesh_upper_transport_setup_access_pdu_header(pdu, app_key->netkey_index, appkey_index, ttl, mesh_access_get_element_address(mesh_model), dest, 0); 1107 mesh_access_send_unacknowledged_pdu(pdu); 1108 } 1109 1110 static void mesh_model_publication_run(btstack_timer_source_t * ts){ 1111 1112 uint32_t now = btstack_run_loop_get_time_ms(); 1113 1114 // iterate over elements and models and handle time-based transitions 1115 mesh_element_iterator_t element_it; 1116 mesh_element_iterator_init(&element_it); 1117 while (mesh_element_iterator_has_next(&element_it)){ 1118 mesh_element_t * element = mesh_element_iterator_next(&element_it); 1119 mesh_model_iterator_t model_it; 1120 mesh_model_iterator_init(&model_it, element); 1121 while (mesh_model_iterator_has_next(&model_it)){ 1122 mesh_model_t * mesh_model = mesh_model_iterator_next(&model_it); 1123 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1124 if (publication_model == NULL) continue; 1125 1126 // check if either timer fired 1127 switch (publication_model->state){ 1128 case MESH_MODEL_PUBLICATION_STATE_W4_PUBLICATION_MS: 1129 if (btstack_time_delta(publication_model->next_publication_ms, now) > 0) break; 1130 publication_model->state = MESH_MODEL_PUBLICATION_STATE_PUBLICATION_READY; 1131 break; 1132 case MESH_MODEL_PUBLICATION_STATE_W4_RETRANSMIT_MS: 1133 if (btstack_time_delta(publication_model->next_retransmit_ms, now) > 0) break; 1134 publication_model->state = MESH_MODEL_PUBLICATION_STATE_RETRANSMIT_READY; 1135 break; 1136 default: 1137 break; 1138 } 1139 1140 switch (publication_model->state){ 1141 case MESH_MODEL_PUBLICATION_STATE_PUBLICATION_READY: 1142 // schedule next publication and retransmission 1143 mesh_model_publication_setup_publication(publication_model, now); 1144 mesh_model_publication_setup_retransmission(publication_model, now); 1145 mesh_model_publication_publish_now_model(mesh_model); 1146 break; 1147 case MESH_MODEL_PUBLICATION_STATE_RETRANSMIT_READY: 1148 // schedule next retransmission 1149 publication_model->retransmit_count--; 1150 mesh_model_publication_setup_retransmission(publication_model, now); 1151 mesh_model_publication_publish_now_model(mesh_model); 1152 break; 1153 default: 1154 break; 1155 } 1156 } 1157 } 1158 1159 int32_t next_timeout_ms = 0; 1160 mesh_element_iterator_init(&element_it); 1161 while (mesh_element_iterator_has_next(&element_it)){ 1162 mesh_element_t * element = mesh_element_iterator_next(&element_it); 1163 mesh_model_iterator_t model_it; 1164 mesh_model_iterator_init(&model_it, element); 1165 while (mesh_model_iterator_has_next(&model_it)){ 1166 mesh_model_t * mesh_model = mesh_model_iterator_next(&model_it); 1167 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1168 if (publication_model == NULL) continue; 1169 1170 // schedule next 1171 int32_t timeout_delta_ms; 1172 switch (publication_model->state){ 1173 case MESH_MODEL_PUBLICATION_STATE_W4_PUBLICATION_MS: 1174 timeout_delta_ms = btstack_time_delta(publication_model->next_publication_ms, now); 1175 if (next_timeout_ms == 0 || timeout_delta_ms < next_timeout_ms){ 1176 next_timeout_ms = timeout_delta_ms; 1177 } 1178 break; 1179 case MESH_MODEL_PUBLICATION_STATE_W4_RETRANSMIT_MS: 1180 timeout_delta_ms = btstack_time_delta(publication_model->next_retransmit_ms, now); 1181 if (next_timeout_ms == 0 || timeout_delta_ms < next_timeout_ms){ 1182 next_timeout_ms = timeout_delta_ms; 1183 } 1184 break; 1185 default: 1186 break; 1187 } 1188 } 1189 } 1190 1191 // remove current timer if active 1192 if (ts == NULL){ 1193 btstack_run_loop_remove_timer(&mesh_access_publication_timer); 1194 1195 } 1196 1197 // new timeout? 1198 if (next_timeout_ms == 0) return; 1199 1200 // set timer 1201 btstack_run_loop_set_timer(&mesh_access_publication_timer, next_timeout_ms); 1202 btstack_run_loop_set_timer_handler(&mesh_access_publication_timer, mesh_model_publication_run); 1203 btstack_run_loop_add_timer(&mesh_access_publication_timer); 1204 } 1205 1206 void mesh_model_publication_start(mesh_model_t * mesh_model){ 1207 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1208 if (publication_model == NULL) return; 1209 1210 // publish right away 1211 publication_model->state = MESH_MODEL_PUBLICATION_STATE_PUBLICATION_READY; 1212 mesh_model_publication_run(NULL); 1213 } 1214 1215 void mesh_model_publication_stop(mesh_model_t * mesh_model){ 1216 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1217 if (publication_model == NULL) return; 1218 1219 // reset state 1220 publication_model->state = MESH_MODEL_PUBLICATION_STATE_IDLE; 1221 } 1222 1223 void mesh_access_state_changed(mesh_model_t * mesh_model){ 1224 mesh_publication_model_t * publication_model = mesh_model->publication_model; 1225 if (publication_model == NULL) return; 1226 publication_model->state = MESH_MODEL_PUBLICATION_STATE_PUBLICATION_READY; 1227 mesh_model_publication_run(NULL); 1228 } 1229 1230