xref: /btstack/src/mesh/mesh_configuration_server.c (revision c824d78c0a34df89b57d535abafcc7dacf30bb06)
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 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
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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
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32  *
33  * Please inquire about commercial licensing options at
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36  */
37 
38 #define BTSTACK_FILE__ "mesh_configuration_server.c"
39 
40 #include <inttypes.h>
41 #include <string.h>
42 #include <stdio.h>
43 
44 #include "mesh/mesh_configuration_server.h"
45 
46 #include "bluetooth_company_id.h"
47 #include "btstack_debug.h"
48 #include "btstack_memory.h"
49 #include "btstack_tlv.h"
50 #include "btstack_util.h"
51 
52 #include "mesh/beacon.h"
53 #include "mesh/gatt_bearer.h"
54 #include "mesh/mesh.h"
55 #include "mesh/mesh_access.h"
56 #include "mesh/mesh_crypto.h"
57 #include "mesh/mesh_foundation.h"
58 #include "mesh/mesh_iv_index_seq_number.h"
59 #include "mesh/mesh_keys.h"
60 #include "mesh/mesh_network.h"
61 #include "mesh/mesh_node.h"
62 #include "mesh/mesh_proxy.h"
63 #include "mesh/mesh_upper_transport.h"
64 #include "mesh/mesh_virtual_addresses.h"
65 
66 #define MESH_HEARTBEAT_FEATURES_SUPPORTED_MASK 0x000f
67 
68 // current access pdu
69 static mesh_pdu_t * access_pdu_in_process;
70 
71 // data from current pdu
72 static uint16_t                     configuration_server_element_address;
73 static uint32_t                     configuration_server_model_identifier;
74 static mesh_model_t               * configuration_server_target_model;
75 static mesh_publication_model_t     configuration_server_publication_model;
76 
77 // cmac for virtual address hash and netkey derive
78 static btstack_crypto_aes128_cmac_t configuration_server_cmac_request;
79 
80 // used to setup virtual addresses
81 static uint8_t                      configuration_server_label_uuid[16];
82 static uint16_t                     configuration_server_hash;
83 
84 // heartbeat publication and subscription state for all Configuration Server models - there is only one
85 // static mesh_heartbeat_subscription_t mesh_heartbeat_subscription;
86 
87 // for PTS testing
88 static int config_netkey_list_max = 0;
89 
90 // TLV
91 
92 static int mesh_model_is_configuration_server(uint32_t model_identifier){
93     return mesh_model_is_bluetooth_sig(model_identifier) && (mesh_model_get_model_id(model_identifier) == MESH_SIG_MODEL_ID_CONFIGURATION_SERVER);
94 }
95 
96 // Configuration Model Subscriptions (helper)
97 
98 // Model to Appkey List
99 
100 static uint8_t mesh_model_add_subscription(mesh_model_t * mesh_model, uint16_t address){
101     uint16_t i;
102     for (i=0;i<MAX_NR_MESH_SUBSCRIPTION_PER_MODEL;i++){
103         if (mesh_model->subscriptions[i] == address) return MESH_FOUNDATION_STATUS_SUCCESS;
104     }
105     for (i=0;i<MAX_NR_MESH_SUBSCRIPTION_PER_MODEL;i++){
106         if (mesh_model->subscriptions[i] == MESH_ADDRESS_UNSASSIGNED) {
107             mesh_model->subscriptions[i] = address;
108             return MESH_FOUNDATION_STATUS_SUCCESS;
109         }
110     }
111     return MESH_FOUNDATION_STATUS_INSUFFICIENT_RESOURCES;
112 }
113 
114 static void mesh_model_delete_subscription(mesh_model_t * mesh_model, uint16_t address){
115     uint16_t i;
116     for (i=0;i<MAX_NR_MESH_SUBSCRIPTION_PER_MODEL;i++){
117         if (mesh_model->subscriptions[i] == address) {
118             mesh_model->subscriptions[i] = MESH_ADDRESS_UNSASSIGNED;
119         }
120     }
121 }
122 
123 static void mesh_model_delete_all_subscriptions(mesh_model_t * mesh_model){
124     uint16_t i;
125     for (i=0;i<MAX_NR_MESH_SUBSCRIPTION_PER_MODEL;i++){
126         mesh_model->subscriptions[i] = MESH_ADDRESS_UNSASSIGNED;
127     }
128 }
129 
130 static void mesh_subcription_decrease_virtual_address_ref_count(mesh_model_t *mesh_model){
131     // decrease ref counts for current virtual subscriptions
132     uint16_t i;
133     for (i = 0; i<MAX_NR_MESH_SUBSCRIPTION_PER_MODEL ; i++){
134         uint16_t src = mesh_model->subscriptions[i];
135         if (mesh_network_address_virtual(src)){
136             mesh_virtual_address_t * virtual_address = mesh_virtual_address_for_pseudo_dst(src);
137             mesh_virtual_address_decrease_refcount(virtual_address);
138         }
139     }
140 }
141 static void mesh_configuration_server_stop_publishing_using_appkey(mesh_model_t * mesh_model, uint16_t appkey_index){
142     // stop publishing if this AppKey was used
143     if (mesh_model->publication_model != NULL){
144         mesh_publication_model_t * publication_model = mesh_model->publication_model;
145         if (publication_model->appkey_index == appkey_index){
146             publication_model->address = MESH_ADDRESS_UNSASSIGNED;
147             publication_model->appkey_index = 0;
148             publication_model->period = 0;
149             publication_model->ttl = 0;
150             publication_model->retransmit = 0;
151 
152             mesh_model_store_publication(mesh_model);
153         }
154     }
155 }
156 
157 // AppKeys Helper
158 static void mesh_configuration_server_delete_appkey(mesh_transport_key_t * transport_key){
159     uint16_t appkey_index = transport_key->appkey_index;
160 
161     // iterate over elements and models
162     mesh_element_iterator_t element_it;
163     mesh_element_iterator_init(&element_it);
164     while (mesh_element_iterator_has_next(&element_it)){
165         mesh_element_t * element = mesh_element_iterator_next(&element_it);
166         mesh_model_iterator_t model_it;
167         mesh_model_iterator_init(&model_it, element);
168         while (mesh_model_iterator_has_next(&model_it)){
169             mesh_model_t * mesh_model = mesh_model_iterator_next(&model_it);
170 
171             // remove from Model to AppKey List
172             mesh_model_unbind_appkey(mesh_model, appkey_index);
173 
174             // stop publishing if this appkey is used
175             mesh_configuration_server_stop_publishing_using_appkey(mesh_model, appkey_index);
176         }
177     }
178 
179     mesh_access_appkey_finalize(transport_key);
180 }
181 
182 // Foundatiopn Message
183 
184 const mesh_access_message_t mesh_foundation_config_beacon_status = {
185         MESH_FOUNDATION_OPERATION_BEACON_STATUS, "1"
186 };
187 const mesh_access_message_t mesh_foundation_config_default_ttl_status = {
188         MESH_FOUNDATION_OPERATION_DEFAULT_TTL_STATUS, "1"
189 };
190 const mesh_access_message_t mesh_foundation_config_friend_status = {
191         MESH_FOUNDATION_OPERATION_FRIEND_STATUS, "1"
192 };
193 const mesh_access_message_t mesh_foundation_config_gatt_proxy_status = {
194         MESH_FOUNDATION_OPERATION_GATT_PROXY_STATUS, "1"
195 };
196 const mesh_access_message_t mesh_foundation_config_relay_status = {
197         MESH_FOUNDATION_OPERATION_RELAY_STATUS, "11"
198 };
199 const mesh_access_message_t mesh_foundation_config_model_publication_status = {
200         MESH_FOUNDATION_OPERATION_MODEL_PUBLICATION_STATUS, "1222111m"
201 };
202 const mesh_access_message_t mesh_foundation_config_model_subscription_status = {
203         MESH_FOUNDATION_OPERATION_MODEL_SUBSCRIPTION_STATUS, "122m"
204 };
205 const mesh_access_message_t mesh_foundation_config_netkey_status = {
206         MESH_FOUNDATION_OPERATION_NETKEY_STATUS, "12"
207 };
208 const mesh_access_message_t mesh_foundation_config_appkey_status = {
209         MESH_FOUNDATION_OPERATION_APPKEY_STATUS, "13"
210 };
211 const mesh_access_message_t mesh_foundation_config_model_app_status = {
212         MESH_FOUNDATION_OPERATION_MODEL_APP_STATUS, "122m"
213 };
214 const mesh_access_message_t mesh_foundation_node_reset_status = {
215         MESH_FOUNDATION_OPERATION_NODE_RESET_STATUS, ""
216 };
217 const mesh_access_message_t mesh_foundation_config_heartbeat_publication_status = {
218         MESH_FOUNDATION_OPERATION_HEARTBEAT_PUBLICATION_STATUS, "1211122"
219 };
220 const mesh_access_message_t mesh_foundation_config_network_transmit_status = {
221         MESH_FOUNDATION_OPERATION_NETWORK_TRANSMIT_STATUS, "1"
222 };
223 const mesh_access_message_t mesh_foundation_node_identity_status = {
224         MESH_FOUNDATION_OPERATION_NODE_IDENTITY_STATUS, "121"
225 };
226 const mesh_access_message_t mesh_key_refresh_phase_status = {
227         MESH_FOUNDATION_OPERATION_KEY_REFRESH_PHASE_STATUS, "121"
228 };
229 const mesh_access_message_t mesh_foundation_low_power_node_poll_timeout_status = {
230         MESH_FOUNDATION_OPERATION_LOW_POWER_NODE_POLL_TIMEOUT_STATUS, "23"
231 };
232 const mesh_access_message_t mesh_foundation_config_heartbeat_subscription_status = {
233         MESH_FOUNDATION_OPERATION_HEARTBEAT_SUBSCRIPTION_STATUS, "1221111"
234 };
235 
236 static void config_server_send_message(uint16_t netkey_index, uint16_t dest, mesh_pdu_t *pdu){
237     // Configuration Server is on primary element and can only use DeviceKey
238     uint16_t appkey_index = MESH_DEVICE_KEY_INDEX;
239     uint16_t src          = mesh_node_get_primary_element_address();
240     uint8_t  ttl          = mesh_foundation_default_ttl_get();
241     mesh_upper_transport_setup_access_pdu_header(pdu, netkey_index, appkey_index, ttl, src, dest, 0);
242     mesh_access_send_unacknowledged_pdu(pdu);
243 }
244 
245 static void config_composition_data_status(uint16_t netkey_index, uint16_t dest){
246 
247     printf("Received Config Composition Data Get -> send Config Composition Data Status\n");
248 
249     mesh_upper_transport_builder_t builder;
250     mesh_access_message_init(&builder, MESH_FOUNDATION_OPERATION_COMPOSITION_DATA_STATUS);
251 
252     // page 0
253     mesh_access_message_add_uint8(&builder, 0);
254 
255     // CID
256     mesh_access_message_add_uint16(&builder, mesh_node_get_company_id());
257     // PID
258     mesh_access_message_add_uint16(&builder, mesh_node_get_product_id());
259     // VID
260     mesh_access_message_add_uint16(&builder, mesh_node_get_product_version_id());
261     // CRPL - number of protection list entries
262     mesh_access_message_add_uint16(&builder, 1);
263     // Features - Relay, Proxy, Friend, Lower Power, ...
264     uint16_t features = 0;
265 #ifdef ENABLE_MESH_RELAY
266     features |= 1;
267 #endif
268 #ifdef ENABLE_MESH_PROXY_SERVER
269     features |= 2;
270 #endif
271     mesh_access_message_add_uint16(&builder, features);
272 
273     mesh_element_iterator_t element_it;
274     mesh_element_iterator_init(&element_it);
275     while (mesh_element_iterator_has_next(&element_it)){
276         mesh_element_t * element = mesh_element_iterator_next(&element_it);
277 
278         // Loc
279         mesh_access_message_add_uint16(&builder, element->loc);
280         // NumS
281         mesh_access_message_add_uint8(&builder, element->models_count_sig);
282         // NumV
283         mesh_access_message_add_uint8(&builder, element->models_count_vendor);
284 
285         mesh_model_iterator_t model_it;
286 
287         // SIG Models
288         mesh_model_iterator_init(&model_it, element);
289         while (mesh_model_iterator_has_next(&model_it)){
290             mesh_model_t * model = mesh_model_iterator_next(&model_it);
291             if (!mesh_model_is_bluetooth_sig(model->model_identifier)) continue;
292             mesh_access_message_add_model_identifier(&builder, model->model_identifier);
293         }
294         // Vendor Models
295         mesh_model_iterator_init(&model_it, element);
296         while (mesh_model_iterator_has_next(&model_it)){
297             mesh_model_t * model = mesh_model_iterator_next(&model_it);
298             if (mesh_model_is_bluetooth_sig(model->model_identifier)) continue;
299             mesh_access_message_add_model_identifier(&builder, model->model_identifier);
300         }
301     }
302 
303     mesh_upper_transport_pdu_t * upper_pdu = mesh_access_message_finalize(&builder);
304 
305     // send as segmented access pdu
306     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) upper_pdu);
307 }
308 
309 static void config_composition_data_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
310     UNUSED(mesh_model);
311     config_composition_data_status(mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
312 
313     mesh_access_message_processed(pdu);
314 }
315 
316 static void config_model_beacon_status(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest){
317     UNUSED(mesh_model);
318     // setup message
319     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(&mesh_foundation_config_beacon_status,
320                                                                                mesh_foundation_beacon_get());
321     if (!transport_pdu) return;
322 
323     // send as segmented access pdu
324     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
325 }
326 
327 static void config_beacon_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
328     config_model_beacon_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
329 
330     mesh_access_message_processed(pdu);
331 }
332 
333 static void config_beacon_set_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
334     mesh_access_parser_state_t parser;
335     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
336 
337     uint8_t beacon_enabled = mesh_access_parser_get_uint8(&parser);
338 
339     // beacon valid
340     if (beacon_enabled < MESH_FOUNDATION_STATE_NOT_SUPPORTED) {
341         // set and store new value
342         mesh_foundation_beacon_set(beacon_enabled);
343         mesh_foundation_state_store();
344 
345         // send status
346         config_model_beacon_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
347     }
348 
349     mesh_access_message_processed(pdu);
350 }
351 
352 static void config_model_default_ttl_status(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest){
353     UNUSED(mesh_model);
354     // setup message
355     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(
356             &mesh_foundation_config_default_ttl_status, mesh_foundation_default_ttl_get());
357     if (!transport_pdu) return;
358 
359     // send as segmented access pdu
360     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
361 }
362 
363 static void config_default_ttl_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
364     config_model_default_ttl_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
365 
366     mesh_access_message_processed(pdu);
367 }
368 
369 static void config_default_ttl_set_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
370     mesh_access_parser_state_t parser;
371     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
372 
373     uint8_t new_ttl = mesh_access_parser_get_uint8(&parser);
374 
375     // validate (0x01 and > 0x7f are prohibited)
376     if (new_ttl <= 0x7f && new_ttl != 0x01) {
377 
378         // set and store
379         mesh_foundation_default_ttl_set(new_ttl);
380         mesh_foundation_state_store();
381 
382         // send status
383         config_model_default_ttl_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
384     }
385 
386     mesh_access_message_processed(pdu);
387 }
388 
389 static void config_friend_status(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest){
390     UNUSED(mesh_model);
391 
392     // setup message
393     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(
394             &mesh_foundation_config_friend_status, mesh_foundation_friend_get());
395     if (!transport_pdu) return;
396 
397     // send as segmented access pdu
398     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
399 }
400 
401 static void config_friend_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
402     config_friend_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
403 
404     mesh_access_message_processed(pdu);
405 }
406 
407 static void config_friend_set_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
408     mesh_access_parser_state_t parser;
409     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
410 
411     uint8_t new_friend_state = mesh_access_parser_get_uint8(&parser);
412 
413     // validate
414     if (new_friend_state < MESH_FOUNDATION_STATE_NOT_SUPPORTED) {
415 
416         // set and store
417         if (mesh_foundation_friend_get() != MESH_FOUNDATION_STATE_NOT_SUPPORTED){
418             mesh_foundation_friend_set(new_friend_state);
419             mesh_foundation_state_store();
420         }
421 
422         // send status
423         config_friend_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
424     }
425 
426     mesh_access_message_processed(pdu);
427 }
428 
429 static void config_model_gatt_proxy_status(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest){
430     UNUSED(mesh_model);
431     // setup message
432     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(&mesh_foundation_config_gatt_proxy_status, mesh_foundation_gatt_proxy_get());
433     if (!transport_pdu) return;
434 
435     // send as segmented access pdu
436     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
437 }
438 
439 static void config_gatt_proxy_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
440     config_model_gatt_proxy_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
441 
442     mesh_access_message_processed(pdu);
443 }
444 
445 static void config_gatt_proxy_set_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
446     mesh_access_parser_state_t parser;
447     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
448 
449     uint8_t enabled = mesh_access_parser_get_uint8(&parser);
450 
451     // validate
452     if (enabled <  MESH_FOUNDATION_STATE_NOT_SUPPORTED) {
453         // set and store
454         mesh_foundation_gatt_proxy_set(enabled);
455         mesh_foundation_state_store();
456 
457         // send status
458         config_model_gatt_proxy_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
459     }
460 
461     mesh_access_message_processed(pdu);
462 
463     // trigger heartbeat emit on change
464     mesh_configuration_server_feature_changed();
465 }
466 
467 static void config_model_relay_status(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest){
468     UNUSED(mesh_model);
469 
470     // setup message
471     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(&mesh_foundation_config_relay_status,
472                                                                                mesh_foundation_relay_get(),
473                                                                                mesh_foundation_relay_retransmit_get());
474     if (!transport_pdu) return;
475 
476     // send as segmented access pdu
477     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
478 }
479 
480 static void config_relay_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
481     config_model_relay_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
482 
483     mesh_access_message_processed(pdu);
484 }
485 
486 static void config_relay_set_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
487 
488     mesh_access_parser_state_t parser;
489     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
490 
491     // check if valid
492     uint8_t relay            = mesh_access_parser_get_uint8(&parser);
493     uint8_t relay_retransmit = mesh_access_parser_get_uint8(&parser);
494 
495     // check if valid
496     if (relay <= 1) {
497         // only update if supported
498         if (mesh_foundation_relay_get() != MESH_FOUNDATION_STATE_NOT_SUPPORTED){
499             mesh_foundation_relay_set(relay);
500             mesh_foundation_relay_retransmit_set(relay_retransmit);
501             mesh_foundation_state_store();
502         }
503 
504         // send status
505         config_model_relay_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
506     }
507 
508     mesh_access_message_processed(pdu);
509 
510     // trigger heartbeat emit on change
511     mesh_configuration_server_feature_changed();
512 }
513 
514 static void config_model_network_transmit_status(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest){
515     UNUSED(mesh_model);
516 
517     // setup message
518     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(
519             &mesh_foundation_config_network_transmit_status, mesh_foundation_network_transmit_get());
520     if (!transport_pdu) return;
521 
522     // send as segmented access pdu
523     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
524 }
525 
526 static void config_model_network_transmit_get_handler(mesh_model_t * mesh_model, mesh_pdu_t * pdu){
527     config_model_network_transmit_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
528 
529     mesh_access_message_processed(pdu);
530 }
531 
532 static void config_model_network_transmit_set_handler(mesh_model_t * mesh_model, mesh_pdu_t * pdu){
533     mesh_access_parser_state_t parser;
534     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
535 
536     uint8_t new_ttl = mesh_access_parser_get_uint8(&parser);
537 
538     // store
539     mesh_foundation_network_transmit_set(new_ttl);
540     mesh_foundation_state_store();
541 
542     //
543     config_model_network_transmit_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
544 
545     mesh_access_message_processed(pdu);
546 }
547 
548 // NetKey List
549 
550 void config_nekey_list_set_max(uint16_t max){
551     config_netkey_list_max = max;
552 }
553 
554 static void config_netkey_status(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest, uint8_t status, uint16_t new_netkey_index){
555     UNUSED(mesh_model);
556 
557     // setup message
558     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(
559             &mesh_foundation_config_netkey_status, status, new_netkey_index);
560     if (!transport_pdu) return;
561 
562     // send as segmented access pdu
563     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
564 }
565 
566 static void config_netkey_list(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest) {
567     UNUSED(mesh_model);
568 
569     mesh_upper_transport_builder_t builder;
570     mesh_access_message_init(&builder, MESH_FOUNDATION_OPERATION_NETKEY_LIST);
571 
572     // add list of netkey indexes
573     mesh_network_key_iterator_t it;
574     mesh_network_key_iterator_init(&it);
575     while (mesh_network_key_iterator_has_more(&it)){
576         mesh_network_key_t * network_key = mesh_network_key_iterator_get_next(&it);
577         mesh_access_message_add_uint16(&builder, network_key->netkey_index);
578     }
579 
580     mesh_upper_transport_pdu_t * upper_pdu = mesh_access_message_finalize(&builder);
581 
582     // send as segmented access pdu
583     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) upper_pdu);
584 }
585 
586 static void config_netkey_add_derived(void * arg){
587     mesh_subnet_t * subnet = (mesh_subnet_t *) arg;
588 
589     // store network key
590     mesh_store_network_key(subnet->old_key);
591 
592     // add key to NetKey List
593     mesh_network_key_add(subnet->old_key);
594 
595     // add subnet
596     mesh_subnet_add(subnet);
597 
598 #ifdef ENABLE_MESH_PROXY_SERVER
599     mesh_proxy_start_advertising_with_network_id();
600 #endif
601 
602     config_netkey_status(mesh_node_get_configuration_server(), mesh_pdu_netkey_index(access_pdu_in_process), mesh_pdu_src(access_pdu_in_process), MESH_FOUNDATION_STATUS_SUCCESS, subnet->netkey_index);
603     mesh_access_message_processed(access_pdu_in_process);
604 }
605 
606 static void config_netkey_add_handler(mesh_model_t * mesh_model, mesh_pdu_t * pdu){
607     mesh_access_parser_state_t parser;
608     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
609 
610     // get params
611     uint8_t new_netkey[16];
612     uint16_t new_netkey_index = mesh_access_parser_get_uint16(&parser);
613     mesh_access_parser_get_key(&parser, new_netkey);
614 
615     uint8_t status;
616 
617     const mesh_subnet_t * existing_subnet = mesh_subnet_get_by_netkey_index(new_netkey_index);
618     if (existing_subnet == NULL){
619 
620         // check limit for pts
621         uint16_t internal_index = mesh_network_key_get_free_index();
622         if (internal_index == MESH_KEYS_INVALID_INDEX || (config_netkey_list_max && mesh_network_key_list_count() >= config_netkey_list_max)){
623             status = MESH_FOUNDATION_STATUS_INSUFFICIENT_RESOURCES;
624         } else {
625 
626             // allocate new key and subnet
627             mesh_network_key_t * new_network_key = btstack_memory_mesh_network_key_get();
628             mesh_subnet_t * new_subnet = btstack_memory_mesh_subnet_get();
629 
630             if (new_network_key == NULL || new_subnet == NULL){
631                 if (new_network_key != NULL){
632                     btstack_memory_mesh_network_key_free(new_network_key);
633                 }
634                 if (new_subnet != NULL){
635                     btstack_memory_mesh_subnet_free(new_subnet);
636                 }
637                 status = MESH_FOUNDATION_STATUS_INSUFFICIENT_RESOURCES;
638 
639             } else {
640 
641                 // setup key
642                 new_network_key->internal_index = internal_index;
643                 new_network_key->netkey_index   = new_netkey_index;
644                 (void)memcpy(new_network_key->net_key, new_netkey, 16);
645 
646                 // setup subnet
647                 new_subnet->old_key = new_network_key;
648                 new_subnet->netkey_index = new_netkey_index;
649                 new_subnet->key_refresh = MESH_KEY_REFRESH_NOT_ACTIVE;
650 
651                 // derive other keys
652                 access_pdu_in_process = pdu;
653                 mesh_network_key_derive(&configuration_server_cmac_request, new_network_key, config_netkey_add_derived, new_subnet);
654                 return;
655             }
656         }
657 
658     } else {
659         // network key for netkey index already exists
660         if (memcmp(existing_subnet->old_key->net_key, new_netkey, 16) == 0){
661             // same netkey
662             status = MESH_FOUNDATION_STATUS_SUCCESS;
663         } else {
664             // different netkey
665             status = MESH_FOUNDATION_STATUS_KEY_INDEX_ALREADY_STORED;
666         }
667     }
668 
669     // report status
670     config_netkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, new_netkey_index);
671     mesh_access_message_processed(pdu);
672 }
673 
674 static void config_netkey_update_derived(void * arg){
675     mesh_subnet_t * subnet = (mesh_subnet_t *) arg;
676 
677     // store network key
678     mesh_store_network_key(subnet->new_key);
679 
680     // add key to NetKey List
681     mesh_network_key_add(subnet->new_key);
682 
683     // update subnet - Key Refresh Phase 1
684     subnet->key_refresh = MESH_KEY_REFRESH_FIRST_PHASE;
685 
686     // report status
687     config_netkey_status(mesh_node_get_configuration_server(), mesh_pdu_netkey_index(access_pdu_in_process), mesh_pdu_src(access_pdu_in_process), MESH_FOUNDATION_STATUS_SUCCESS, subnet->netkey_index);
688     mesh_access_message_processed(access_pdu_in_process);
689 }
690 
691 static void config_netkey_update_handler(mesh_model_t * mesh_model, mesh_pdu_t * pdu) {
692     mesh_access_parser_state_t parser;
693     mesh_access_parser_init(&parser, (mesh_pdu_t *) pdu);
694 
695     // get params
696     uint8_t new_netkey[16];
697     uint16_t netkey_index = mesh_access_parser_get_uint16(&parser);
698     mesh_access_parser_get_key(&parser, new_netkey);
699 
700     // get existing subnet
701     mesh_subnet_t * subnet = mesh_subnet_get_by_netkey_index(netkey_index);
702     if (subnet == NULL){
703         config_netkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), MESH_FOUNDATION_STATUS_INVALID_NETKEY_INDEX, netkey_index);
704         mesh_access_message_processed(access_pdu_in_process);
705         return;
706     }
707 
708     // get index for new key
709     uint16_t internal_index = mesh_network_key_get_free_index();
710     if (internal_index == MESH_KEYS_INVALID_INDEX){
711         config_netkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), MESH_FOUNDATION_STATUS_INSUFFICIENT_RESOURCES, netkey_index);
712         mesh_access_message_processed(access_pdu_in_process);
713         return;
714     }
715 
716     // get new key
717     mesh_network_key_t * new_network_key = btstack_memory_mesh_network_key_get();
718     if (new_network_key == NULL){
719         config_netkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), MESH_FOUNDATION_STATUS_INSUFFICIENT_RESOURCES, netkey_index);
720         mesh_access_message_processed(access_pdu_in_process);
721         return;
722     }
723 
724     // setup new key
725     new_network_key->internal_index = internal_index;
726     new_network_key->netkey_index   = netkey_index;
727     new_network_key->version        = (uint8_t)(subnet->old_key->version + 1);
728     (void)memcpy(new_network_key->net_key, new_netkey, 16);
729 
730     // store in subnet (not active yet)
731     subnet->new_key = new_network_key;
732 
733     // derive other keys
734     access_pdu_in_process = pdu;
735     mesh_network_key_derive(&configuration_server_cmac_request, new_network_key, config_netkey_update_derived, subnet);
736 }
737 
738 static void config_netkey_delete_handler(mesh_model_t * mesh_model, mesh_pdu_t * pdu) {
739     mesh_access_parser_state_t parser;
740     mesh_access_parser_init(&parser, (mesh_pdu_t *) pdu);
741 
742     // get params
743     uint16_t netkey_index_to_remove = mesh_access_parser_get_uint16(&parser);
744 
745     // get message netkey
746     uint16_t netkey_index_pdu = mesh_pdu_netkey_index(pdu);
747 
748     // remove subnet
749     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
750     mesh_subnet_t * subnet = mesh_subnet_get_by_netkey_index(netkey_index_to_remove);
751     if (subnet != NULL){
752         // A NetKey shall not be deleted from the NetKey List using a message secured with this NetKey.
753         // Also prevents deleting the last network key
754         if (netkey_index_to_remove != netkey_index_pdu){
755 
756             // remove all appkeys for this netkey
757             mesh_transport_key_iterator_t it;
758             mesh_transport_key_iterator_init(&it, netkey_index_to_remove);
759             while (mesh_transport_key_iterator_has_more(&it)){
760                 mesh_transport_key_t * transport_key = mesh_transport_key_iterator_get_next(&it);
761                 mesh_configuration_server_delete_appkey(transport_key);
762             }
763 
764             // delete old/current key
765             mesh_access_netkey_finalize(subnet->old_key);
766             subnet->old_key = NULL;
767 
768             // delete new key
769             if (subnet->new_key != NULL){
770                 mesh_access_netkey_finalize(subnet->new_key);
771                 subnet->new_key = NULL;
772             }
773 
774             // remove subnet
775             mesh_subnet_remove(subnet);
776             btstack_memory_mesh_subnet_free(subnet);
777 
778         } else {
779             status = MESH_FOUNDATION_STATUS_CANNOT_REMOVE;
780         }
781     }
782     config_netkey_status(mesh_model, netkey_index_pdu, mesh_pdu_src(pdu), status, netkey_index_to_remove);
783     mesh_access_message_processed(pdu);
784 }
785 
786 static void config_netkey_get_handler(mesh_model_t * mesh_model, mesh_pdu_t * pdu){
787     config_netkey_list(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
788     mesh_access_message_processed(pdu);
789 }
790 
791 // AppKey List
792 
793 static void config_appkey_status(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest, uint32_t netkey_and_appkey_index, uint8_t status){
794     UNUSED(mesh_model);
795 
796     // setup message
797     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(&mesh_foundation_config_appkey_status,
798                                                                                status, netkey_and_appkey_index);
799     if (!transport_pdu) return;
800 
801     // send as segmented access pdu
802     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
803 }
804 
805 static void config_appkey_list(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest, uint32_t netkey_index_of_list){
806     UNUSED(mesh_model);
807 
808     mesh_upper_transport_builder_t builder;
809     mesh_access_message_init(&builder, MESH_FOUNDATION_OPERATION_APPKEY_LIST);
810 
811     // check netkey_index is valid
812     mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index_of_list);
813     uint8_t status;
814     if (network_key == NULL){
815         status = MESH_FOUNDATION_STATUS_INVALID_NETKEY_INDEX;
816     } else {
817         status = MESH_FOUNDATION_STATUS_SUCCESS;
818     }
819     mesh_access_message_add_uint8(&builder, status);
820     mesh_access_message_add_uint16(&builder, netkey_index_of_list);
821 
822     // add list of appkey indexes
823     mesh_transport_key_iterator_t it;
824     mesh_transport_key_iterator_init(&it, netkey_index_of_list);
825     while (mesh_transport_key_iterator_has_more(&it)){
826         mesh_transport_key_t * transport_key = mesh_transport_key_iterator_get_next(&it);
827         if (transport_key->old_key == 1) continue;
828         mesh_access_message_add_uint16(&builder, transport_key->appkey_index);
829     }
830 
831     mesh_upper_transport_pdu_t * upper_pdu = mesh_access_message_finalize(&builder);
832 
833     // send as segmented access pdu
834     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) upper_pdu);
835 }
836 
837 static void config_appkey_add_or_update_aid(void *arg){
838     mesh_transport_key_t * transport_key = (mesh_transport_key_t *) arg;
839 
840     printf("Config Appkey Add/Update: NetKey Index 0x%04x, AppKey Index 0x%04x, AID %02x: ", transport_key->netkey_index, transport_key->appkey_index, transport_key->aid);
841     printf_hexdump(transport_key->key, 16);
842 
843     // store in TLV
844     mesh_store_app_key(transport_key);
845 
846     // add app key
847     mesh_transport_key_add(transport_key);
848 
849     uint32_t netkey_and_appkey_index = (((uint32_t)transport_key->appkey_index) << 12) | transport_key->netkey_index;
850     config_appkey_status(mesh_node_get_configuration_server(),  mesh_pdu_netkey_index(access_pdu_in_process), mesh_pdu_src(access_pdu_in_process), netkey_and_appkey_index, MESH_FOUNDATION_STATUS_SUCCESS);
851 
852     mesh_access_message_processed(access_pdu_in_process);
853 }
854 
855 static void config_appkey_add_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
856 
857     mesh_access_parser_state_t parser;
858     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
859 
860     // netkey and appkey index
861     uint32_t netkey_and_appkey_index = mesh_access_parser_get_uint24(&parser);
862     uint16_t netkey_index = netkey_and_appkey_index & 0xfff;
863     uint16_t appkey_index = netkey_and_appkey_index >> 12;
864 
865     // actual key
866     uint8_t  appkey[16];
867     mesh_access_parser_get_key(&parser, appkey);
868 
869     // check netkey_index is valid
870     mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index);
871     if (network_key == NULL){
872         config_appkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), netkey_and_appkey_index, MESH_FOUNDATION_STATUS_INVALID_NETKEY_INDEX);
873         mesh_access_message_processed(pdu);
874         return;
875     }
876 
877     // check if appkey already exists
878     mesh_transport_key_t * transport_key = mesh_transport_key_get(appkey_index);
879     if (transport_key){
880         uint8_t status;
881         if (transport_key->netkey_index != netkey_index){
882             // already stored but with different netkey
883             status = MESH_FOUNDATION_STATUS_INVALID_NETKEY_INDEX;
884         } else if (memcmp(transport_key->key, appkey, 16) == 0){
885             // key identical
886             status = MESH_FOUNDATION_STATUS_SUCCESS;
887         } else {
888             // key differs
889             status = MESH_FOUNDATION_STATUS_KEY_INDEX_ALREADY_STORED;
890         }
891         config_appkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), netkey_and_appkey_index, status);
892         mesh_access_message_processed(pdu);
893         return;
894     }
895 
896     // create app key (first get free slot in transport key table)
897     mesh_transport_key_t * app_key = NULL;
898     uint16_t internal_index = mesh_transport_key_get_free_index();
899     if (internal_index > 0){
900         app_key = btstack_memory_mesh_transport_key_get();
901     }
902     if (app_key == NULL) {
903         config_appkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), netkey_and_appkey_index, MESH_FOUNDATION_STATUS_INSUFFICIENT_RESOURCES);
904         mesh_access_message_processed(pdu);
905         return;
906     }
907 
908     // store data
909     app_key->internal_index = internal_index;
910     app_key->akf = 1;
911     app_key->appkey_index = appkey_index;
912     app_key->netkey_index = netkey_index;
913     app_key->version = 0;
914     app_key->old_key = 0;
915 
916     (void)memcpy(app_key->key, appkey, 16);
917 
918     // calculate AID
919     access_pdu_in_process = pdu;
920     mesh_transport_key_calc_aid(&configuration_server_cmac_request, app_key, config_appkey_add_or_update_aid, app_key);
921 }
922 
923 static void config_appkey_update_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
924 
925     mesh_access_parser_state_t parser;
926     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
927 
928     // netkey and appkey index
929     uint32_t netkey_and_appkey_index = mesh_access_parser_get_uint24(&parser);
930     uint16_t netkey_index = netkey_and_appkey_index & 0xfff;
931     uint16_t appkey_index = netkey_and_appkey_index >> 12;
932 
933     // actual key
934     uint8_t  appkey[16];
935     mesh_access_parser_get_key(&parser, appkey);
936 
937 
938 // for PTS testing
939     // check netkey_index is valid
940     mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index);
941     if (network_key == NULL){
942         config_appkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), netkey_and_appkey_index, MESH_FOUNDATION_STATUS_INVALID_NETKEY_INDEX);
943         mesh_access_message_processed(pdu);
944         return;
945     }
946 
947     // check if appkey already exists
948     mesh_transport_key_t * existing_app_key = mesh_transport_key_get(appkey_index);
949     if (!existing_app_key) {
950         config_appkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), netkey_and_appkey_index, MESH_FOUNDATION_STATUS_INVALID_APPKEY_INDEX);
951         mesh_access_message_processed(pdu);
952         return;
953     }
954 
955     if (existing_app_key->netkey_index != netkey_index){
956         // already stored but with different netkey
957         config_appkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), netkey_and_appkey_index, MESH_FOUNDATION_STATUS_INVALID_BINDING);
958         mesh_access_message_processed(pdu);
959         return;
960     }
961 
962     if (memcmp(existing_app_key->key, appkey, 16) == 0){
963         // key identical
964         config_appkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), netkey_and_appkey_index, MESH_FOUNDATION_STATUS_SUCCESS);
965         mesh_access_message_processed(pdu);
966         return;
967     }
968 
969     // create app key
970     mesh_transport_key_t * new_app_key = NULL;
971     uint16_t internal_index = mesh_transport_key_get_free_index();
972     if (internal_index > 0){
973         new_app_key = btstack_memory_mesh_transport_key_get();
974     }
975     if (new_app_key == NULL) {
976         config_appkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), netkey_and_appkey_index, MESH_FOUNDATION_STATUS_INSUFFICIENT_RESOURCES);
977         mesh_access_message_processed(pdu);
978         return;
979     }
980 
981     // store data
982     new_app_key->internal_index = internal_index;
983     new_app_key->appkey_index = appkey_index;
984     new_app_key->netkey_index = netkey_index;
985     new_app_key->key_refresh  = 1;
986     new_app_key->version = (uint8_t)(existing_app_key->version + 1);
987     (void)memcpy(new_app_key->key, appkey, 16);
988 
989     // mark old key
990     existing_app_key->old_key = 1;
991 
992     // calculate AID
993     access_pdu_in_process = pdu;
994     mesh_transport_key_calc_aid(&configuration_server_cmac_request, new_app_key, config_appkey_add_or_update_aid, new_app_key);
995 }
996 
997 static void config_appkey_delete_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
998     mesh_access_parser_state_t parser;
999     mesh_access_parser_init(&parser, (mesh_pdu_t *) pdu);
1000 
1001     // netkey and appkey index
1002     uint32_t netkey_and_appkey_index = mesh_access_parser_get_uint24(&parser);
1003     uint16_t netkey_index = netkey_and_appkey_index & 0xfff;
1004     uint16_t appkey_index = netkey_and_appkey_index >> 12;
1005 
1006     // check netkey_index is valid
1007     mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index);
1008     if (network_key == NULL){
1009         config_appkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), netkey_and_appkey_index, MESH_FOUNDATION_STATUS_INVALID_NETKEY_INDEX);
1010         mesh_access_message_processed(pdu);
1011         return;
1012     }
1013 
1014     // check if appkey already exists
1015     mesh_transport_key_t * transport_key = mesh_transport_key_get(appkey_index);
1016     if (transport_key){
1017         mesh_configuration_server_delete_appkey(transport_key);
1018     }
1019 
1020     config_appkey_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), netkey_and_appkey_index, MESH_FOUNDATION_STATUS_SUCCESS);
1021     mesh_access_message_processed(pdu);
1022 }
1023 
1024 static void config_appkey_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
1025     mesh_access_parser_state_t parser;
1026     mesh_access_parser_init(&parser, (mesh_pdu_t *) pdu);
1027     uint16_t netkey_index = mesh_access_parser_get_uint16(&parser);
1028 
1029     config_appkey_list(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), netkey_index);
1030     mesh_access_message_processed(pdu);
1031 }
1032 
1033 // Configuration Model Subscriptions (messages)
1034 
1035 static void config_model_subscription_list(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest, uint8_t status, uint16_t element_address, uint32_t model_identifier, mesh_model_t * target_model){
1036     UNUSED(mesh_model);
1037 
1038     uint16_t opcode;
1039     if (mesh_model_is_bluetooth_sig(model_identifier)){
1040         opcode = MESH_FOUNDATION_OPERATION_SIG_MODEL_SUBSCRIPTION_LIST;
1041     } else {
1042         opcode = MESH_FOUNDATION_OPERATION_VENDOR_MODEL_SUBSCRIPTION_LIST;
1043     }
1044 
1045     mesh_upper_transport_builder_t builder;
1046     mesh_access_message_init(&builder, opcode);
1047 
1048     // setup segmented message
1049     mesh_access_message_add_uint8(&builder, status);
1050     mesh_access_message_add_uint16(&builder, element_address);
1051     mesh_access_message_add_model_identifier(&builder, model_identifier);
1052 
1053     if (target_model != NULL){
1054         uint16_t i;
1055         for (i = 0; i < MAX_NR_MESH_SUBSCRIPTION_PER_MODEL; i++){
1056             uint16_t address = target_model->subscriptions[i];
1057             if (address == MESH_ADDRESS_UNSASSIGNED) continue;
1058             if (mesh_network_address_virtual(address)) {
1059                 mesh_virtual_address_t * virtual_address = mesh_virtual_address_for_pseudo_dst(address);
1060                 if (virtual_address == NULL) continue;
1061                 address = virtual_address->hash;
1062             }
1063             mesh_access_message_add_uint16(&builder, address);
1064         }
1065     }
1066 
1067     mesh_upper_transport_pdu_t * upper_pdu = mesh_access_message_finalize(&builder);
1068 
1069     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) upper_pdu);
1070 }
1071 
1072 static void config_model_subscription_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
1073     mesh_access_parser_state_t parser;
1074     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1075 
1076     uint16_t element_address  = mesh_access_parser_get_uint16(&parser);
1077     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1078 
1079     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1080     mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(element_address, model_identifier, &status);
1081 
1082     config_model_subscription_list(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, element_address, model_identifier, target_model);
1083     mesh_access_message_processed(pdu);
1084 }
1085 
1086 static void config_model_subscription_status(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest, uint8_t status, uint16_t element_address, uint16_t address, uint32_t model_identifier){
1087     UNUSED(mesh_model);
1088 
1089     // setup message
1090     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(&mesh_foundation_config_model_subscription_status,
1091                                                                                 status, element_address, address, model_identifier);
1092     if (!transport_pdu) return;
1093     // send as segmented access pdu
1094     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
1095 }
1096 
1097 static void config_model_subscription_add_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
1098     mesh_access_parser_state_t parser;
1099     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1100 
1101     uint16_t element_address  = mesh_access_parser_get_uint16(&parser);
1102     uint16_t address          = mesh_access_parser_get_uint16(&parser);
1103     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1104 
1105     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1106     mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(element_address, model_identifier, &status);
1107 
1108     if (target_model != NULL){
1109         if (mesh_network_address_group(address) && !mesh_network_address_all_nodes(address)){
1110             status = mesh_model_add_subscription(target_model, address);
1111             if (status == MESH_FOUNDATION_STATUS_SUCCESS){
1112                 mesh_model_store_subscriptions(target_model);
1113             }
1114         } else {
1115             status = MESH_FOUNDATION_STATUS_INVALID_ADDRESS;
1116         }
1117     }
1118 
1119     config_model_subscription_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, element_address, address, model_identifier);
1120     mesh_access_message_processed(pdu);
1121 }
1122 
1123 static void config_model_subscription_virtual_address_add_hash(void *arg){
1124     mesh_model_t * target_model = (mesh_model_t*) arg;
1125     mesh_model_t * mesh_model = mesh_node_get_configuration_server();
1126 
1127     // add if not exists
1128     mesh_virtual_address_t * virtual_address = mesh_virtual_address_for_label_uuid(configuration_server_label_uuid);
1129     if (virtual_address == NULL){
1130         virtual_address = mesh_virtual_address_register(configuration_server_label_uuid, configuration_server_hash);
1131     }
1132 
1133     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1134     uint16_t hash_dst   = MESH_ADDRESS_UNSASSIGNED;
1135     if (virtual_address == NULL){
1136         status = MESH_FOUNDATION_STATUS_INSUFFICIENT_RESOURCES;
1137     } else {
1138         if (!mesh_model_contains_subscription(target_model,  virtual_address->pseudo_dst)){
1139             status = mesh_model_add_subscription(target_model,  virtual_address->pseudo_dst);
1140             if (status == MESH_FOUNDATION_STATUS_SUCCESS){
1141                 hash_dst = virtual_address->hash;
1142                 mesh_virtual_address_increase_refcount(virtual_address);
1143                 mesh_model_store_subscriptions(target_model);
1144             }
1145         }
1146     }
1147 
1148     config_model_subscription_status(mesh_model, mesh_pdu_netkey_index(access_pdu_in_process), mesh_pdu_src(access_pdu_in_process), status, configuration_server_element_address, hash_dst, target_model->model_identifier);
1149     mesh_access_message_processed(access_pdu_in_process);
1150     return;
1151 }
1152 
1153 static void config_model_subscription_virtual_address_add_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
1154     mesh_access_parser_state_t parser;
1155     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1156 
1157     // ElementAddress - Address of the element - should be us
1158     configuration_server_element_address = mesh_access_parser_get_uint16(&parser);
1159 
1160     // store label uuid
1161     mesh_access_parser_get_label_uuid(&parser, configuration_server_label_uuid);
1162 
1163     // Model Identifier
1164     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1165 
1166     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1167     mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(configuration_server_element_address, model_identifier, &status);
1168 
1169     if (target_model == NULL){
1170         config_model_subscription_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, configuration_server_element_address, MESH_ADDRESS_UNSASSIGNED, model_identifier);
1171         mesh_access_message_processed(pdu);
1172         return;
1173     }
1174 
1175     access_pdu_in_process = pdu;
1176     mesh_virtual_address(&configuration_server_cmac_request, configuration_server_label_uuid, &configuration_server_hash, &config_model_subscription_virtual_address_add_hash, target_model);
1177 }
1178 
1179 static void config_model_subscription_overwrite_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
1180     mesh_access_parser_state_t parser;
1181     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1182 
1183     uint16_t element_address  = mesh_access_parser_get_uint16(&parser);
1184     uint16_t address          = mesh_access_parser_get_uint16(&parser);
1185     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1186 
1187     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1188     mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(element_address, model_identifier, &status);
1189 
1190     if (target_model != NULL){
1191         if (mesh_network_address_group(address) && !mesh_network_address_all_nodes(address)){
1192             mesh_subcription_decrease_virtual_address_ref_count(target_model);
1193             mesh_model_delete_all_subscriptions(target_model);
1194             mesh_model_add_subscription(target_model, address);
1195             mesh_model_store_subscriptions(target_model);
1196         } else {
1197             status = MESH_FOUNDATION_STATUS_INVALID_ADDRESS;
1198         }
1199     }
1200 
1201     config_model_subscription_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, element_address, address, model_identifier);
1202     mesh_access_message_processed(pdu);
1203 }
1204 
1205 static void config_model_subscription_virtual_address_overwrite_hash(void *arg){
1206     mesh_model_t * target_model = (mesh_model_t*) arg;
1207     mesh_model_t * mesh_model = mesh_node_get_configuration_server();
1208 
1209     // add if not exists
1210     mesh_virtual_address_t * virtual_address = mesh_virtual_address_for_label_uuid(configuration_server_label_uuid);
1211     if (virtual_address == NULL){
1212         virtual_address = mesh_virtual_address_register(configuration_server_label_uuid, configuration_server_hash);
1213     }
1214 
1215     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1216     uint16_t address = MESH_ADDRESS_UNSASSIGNED;;
1217     if (virtual_address == NULL){
1218         status = MESH_FOUNDATION_STATUS_INSUFFICIENT_RESOURCES;
1219     } else {
1220         address = configuration_server_hash;
1221 
1222         // increase refcount first to avoid flash delete + add in a row
1223         mesh_virtual_address_increase_refcount(virtual_address);
1224 
1225         // decrease ref counts for virtual addresses in subscription
1226         mesh_subcription_decrease_virtual_address_ref_count(target_model);
1227 
1228         // clear subscriptions
1229         mesh_model_delete_all_subscriptions(target_model);
1230 
1231         // add new subscription (successfull if MAX_NR_MESH_SUBSCRIPTION_PER_MODEL > 0)
1232         mesh_model_add_subscription(target_model, virtual_address->pseudo_dst);
1233 
1234         mesh_model_store_subscriptions(target_model);
1235     }
1236 
1237     config_model_subscription_status(mesh_model, mesh_pdu_netkey_index(access_pdu_in_process), mesh_pdu_src(access_pdu_in_process), status, configuration_server_element_address, address, target_model->model_identifier);
1238     mesh_access_message_processed(access_pdu_in_process);
1239     return;
1240 }
1241 
1242 static void config_model_subscription_virtual_address_overwrite_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
1243     mesh_access_parser_state_t parser;
1244     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1245 
1246     // ElementAddress - Address of the element - should be us
1247     configuration_server_element_address = mesh_access_parser_get_uint16(&parser);
1248 
1249     // store label uuid
1250     mesh_access_parser_get_label_uuid(&parser, configuration_server_label_uuid);
1251 
1252     // Model Identifier
1253     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1254 
1255     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1256     mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(configuration_server_element_address, model_identifier, &status);
1257 
1258     if (target_model == NULL){
1259         config_model_subscription_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, configuration_server_element_address, MESH_ADDRESS_UNSASSIGNED, model_identifier);
1260         mesh_access_message_processed(pdu);
1261         return;
1262     }
1263     access_pdu_in_process = pdu;
1264     mesh_virtual_address(&configuration_server_cmac_request, configuration_server_label_uuid, &configuration_server_hash, &config_model_subscription_virtual_address_overwrite_hash, target_model);
1265 }
1266 
1267 static void config_model_subscription_delete_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
1268     mesh_access_parser_state_t parser;
1269     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1270 
1271     uint16_t element_address  = mesh_access_parser_get_uint16(&parser);
1272     uint16_t address          = mesh_access_parser_get_uint16(&parser);
1273     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1274 
1275     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1276     mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(element_address, model_identifier, &status);
1277 
1278     if (target_model != NULL){
1279         if (mesh_network_address_group(address) && !mesh_network_address_all_nodes(address)){
1280             mesh_model_delete_subscription(target_model, address);
1281             mesh_model_store_subscriptions(target_model);
1282         } else {
1283             status = MESH_FOUNDATION_STATUS_INVALID_ADDRESS;
1284         }
1285     }
1286 
1287     config_model_subscription_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, element_address, address, model_identifier);
1288     mesh_access_message_processed(pdu);
1289 }
1290 
1291 static void config_model_subscription_virtual_address_delete_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
1292     mesh_access_parser_state_t parser;
1293     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1294 
1295     uint16_t element_address  = mesh_access_parser_get_uint16(&parser);
1296     mesh_access_parser_get_label_uuid(&parser, configuration_server_label_uuid);
1297     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1298 
1299     mesh_virtual_address_t * virtual_address = mesh_virtual_address_for_label_uuid(configuration_server_label_uuid);
1300     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1301     mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(element_address, model_identifier, &status);
1302     uint16_t address = MESH_ADDRESS_UNSASSIGNED;
1303 
1304     if ((target_model != NULL) && (virtual_address != NULL) && mesh_model_contains_subscription(target_model, virtual_address->pseudo_dst)){
1305         address = virtual_address->hash;
1306         mesh_model_delete_subscription(target_model, virtual_address->pseudo_dst);
1307         mesh_model_store_subscriptions(target_model);
1308         mesh_virtual_address_decrease_refcount(virtual_address);
1309      }
1310 
1311     config_model_subscription_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, element_address,address, model_identifier);
1312     mesh_access_message_processed(pdu);
1313 }
1314 
1315 static void config_model_subscription_delete_all_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
1316     mesh_access_parser_state_t parser;
1317     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1318 
1319     uint16_t element_address  = mesh_access_parser_get_uint16(&parser);
1320     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1321 
1322     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1323     mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(element_address, model_identifier, &status);
1324 
1325     if (target_model != NULL){
1326         mesh_subcription_decrease_virtual_address_ref_count(target_model);
1327         mesh_model_delete_all_subscriptions(target_model);
1328         mesh_model_store_subscriptions(target_model);
1329     }
1330 
1331     config_model_subscription_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, element_address, MESH_ADDRESS_UNSASSIGNED, model_identifier);
1332     mesh_access_message_processed(pdu);
1333 }
1334 
1335 // Configuration Model to AppKey List
1336 
1337 static void config_model_app_status(mesh_model_t * mesh_model, uint16_t netkey_index, uint16_t dest, uint8_t status, uint16_t element_address, uint16_t appkey_index, uint32_t model_identifier){
1338     UNUSED(mesh_model);
1339 
1340     // setup message
1341     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(&mesh_foundation_config_model_app_status,
1342                                                             status, element_address, appkey_index, model_identifier);
1343     if (!transport_pdu) return;
1344 
1345     // send as segmented access pdu
1346     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
1347 }
1348 
1349 static void config_model_app_list(mesh_model_t * config_server_model, uint16_t netkey_index, uint16_t dest, uint8_t status, uint16_t element_address, uint32_t model_identifier, mesh_model_t * mesh_model){
1350     UNUSED(config_server_model);
1351 
1352     uint16_t opcode;
1353     if (mesh_model_is_bluetooth_sig(model_identifier)){
1354         opcode = MESH_FOUNDATION_OPERATION_SIG_MODEL_APP_LIST;
1355     } else {
1356         opcode = MESH_FOUNDATION_OPERATION_VENDOR_MODEL_APP_LIST;
1357     }
1358 
1359     mesh_upper_transport_builder_t builder;
1360     mesh_access_message_init(&builder, opcode);
1361 
1362     mesh_access_message_add_uint8(&builder, status);
1363     mesh_access_message_add_uint16(&builder, element_address);
1364     if (mesh_model_is_bluetooth_sig(model_identifier)) {
1365         mesh_access_message_add_uint16(&builder, mesh_model_get_model_id(model_identifier));
1366     } else {
1367         mesh_access_message_add_uint32(&builder, model_identifier);
1368     }
1369 
1370     // add list of appkey indexes
1371     if (mesh_model){
1372         uint16_t i;
1373         for (i=0;i<MAX_NR_MESH_APPKEYS_PER_MODEL;i++){
1374             uint16_t appkey_index = mesh_model->appkey_indices[i];
1375             if (appkey_index == MESH_APPKEY_INVALID) continue;
1376             mesh_access_message_add_uint16(&builder, appkey_index);
1377         }
1378     }
1379 
1380     mesh_upper_transport_pdu_t * upper_pdu = mesh_access_message_finalize(&builder);
1381 
1382     // send as segmented access pdu
1383     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) upper_pdu);
1384 }
1385 
1386 static void config_model_app_bind_handler(mesh_model_t *config_server_model, mesh_pdu_t * pdu) {
1387     mesh_access_parser_state_t parser;
1388     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1389 
1390     uint16_t element_address = mesh_access_parser_get_uint16(&parser);
1391     uint16_t appkey_index    = mesh_access_parser_get_uint16(&parser);
1392     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1393 
1394     uint8_t status;
1395     do {
1396         // validate address and look up model
1397         mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(element_address, model_identifier, &status);
1398         if (target_model == NULL) break;
1399 
1400         // validate app key exists
1401         mesh_transport_key_t * app_key = mesh_transport_key_get(appkey_index);
1402         if (!app_key){
1403             status = MESH_FOUNDATION_STATUS_INVALID_APPKEY_INDEX;
1404             break;
1405         }
1406 
1407         // Configuration Server only allows device keys
1408         if (mesh_model_is_configuration_server(model_identifier)){
1409             status = MESH_FOUNDATION_STATUS_CANNOT_BIND;
1410             break;
1411         }
1412         status = mesh_model_bind_appkey(target_model, appkey_index);
1413 
1414     } while (0);
1415 
1416     config_model_app_status(config_server_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, element_address, appkey_index, model_identifier);
1417     mesh_access_message_processed(pdu);
1418 }
1419 
1420 static void config_model_app_unbind_handler(mesh_model_t *config_server_model, mesh_pdu_t * pdu) {
1421     mesh_access_parser_state_t parser;
1422     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1423 
1424     uint16_t element_address = mesh_access_parser_get_uint16(&parser);
1425     uint16_t appkey_index    = mesh_access_parser_get_uint16(&parser);
1426     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1427 
1428     uint8_t status;
1429     do {
1430         // validate address and look up model
1431         mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(element_address, model_identifier, &status);
1432         if (target_model == NULL) break;
1433 
1434         // validate app key exists
1435         mesh_transport_key_t * app_key = mesh_transport_key_get(appkey_index);
1436         if (!app_key){
1437             status = MESH_FOUNDATION_STATUS_INVALID_APPKEY_INDEX;
1438             break;
1439         }
1440 
1441         // stop publishing
1442         mesh_configuration_server_stop_publishing_using_appkey(target_model, appkey_index);
1443 
1444         // unbind appkey
1445         mesh_model_unbind_appkey(target_model, appkey_index);
1446 
1447         status = MESH_FOUNDATION_STATUS_SUCCESS;
1448     } while (0);
1449 
1450     config_model_app_status(config_server_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, element_address, appkey_index, model_identifier);
1451     mesh_access_message_processed(pdu);
1452 }
1453 
1454 static void config_model_app_get_handler(mesh_model_t *config_server_model, mesh_pdu_t * pdu){
1455     mesh_access_parser_state_t parser;
1456     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1457 
1458     uint16_t element_address = mesh_access_parser_get_uint16(&parser);
1459     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1460 
1461     uint8_t status;
1462     mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(element_address, model_identifier, &status);
1463     config_model_app_list(config_server_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, element_address, model_identifier, target_model);
1464     mesh_access_message_processed(pdu);
1465 }
1466 
1467 // Model Publication
1468 static void config_model_publication_changed(mesh_model_t *mesh_model, mesh_publication_model_t * new_publication_model){
1469 
1470     // stop publication
1471     mesh_model_publication_stop(mesh_model);
1472 
1473     if (new_publication_model->address == MESH_ADDRESS_UNSASSIGNED) {
1474         // "When the PublishAddress is set to the unassigned address, the values of the AppKeyIndex, CredentialFlag, PublishTTL, PublishPeriod, PublishRetransmitCount, and PublishRetransmitIntervalSteps fields shall be set to 0x00.
1475         mesh_model->publication_model->address = MESH_ADDRESS_UNSASSIGNED;
1476         mesh_model->publication_model->appkey_index = 0;
1477         mesh_model->publication_model->friendship_credential_flag = 0;
1478         mesh_model->publication_model->period = 0;
1479         mesh_model->publication_model->ttl = 0;
1480         mesh_model->publication_model->retransmit = 0;
1481     } else {
1482         // update model publication state
1483         mesh_model->publication_model->address = new_publication_model->address;
1484         mesh_model->publication_model->appkey_index = new_publication_model->appkey_index;
1485         mesh_model->publication_model->friendship_credential_flag = new_publication_model->friendship_credential_flag;
1486         mesh_model->publication_model->period = new_publication_model->period;
1487         mesh_model->publication_model->ttl = new_publication_model->ttl;
1488         mesh_model->publication_model->retransmit = new_publication_model->retransmit;
1489     }
1490 
1491     // store
1492     mesh_model_store_publication(mesh_model);
1493 
1494     // start publication if address is set (nothing happens if period = 0 and retransmit = 0)
1495     if (new_publication_model->address == MESH_ADDRESS_UNSASSIGNED) return;
1496 
1497     // start to publish
1498     mesh_model_publication_start(mesh_model);
1499 }
1500 
1501 
1502 static void
1503 config_model_publication_status(mesh_model_t *mesh_model, uint16_t netkey_index, uint16_t dest, uint8_t status,
1504                                     uint16_t element_address, uint32_t model_identifier, mesh_publication_model_t *publication_model) {
1505     UNUSED(mesh_model);
1506 
1507     // setup message
1508     uint16_t app_key_index_and_credential_flag = 0;
1509     uint16_t publish_address = 0;
1510     uint8_t ttl = 0;
1511     uint8_t period = 0;
1512     uint8_t retransmit = 0;
1513     if (status == MESH_FOUNDATION_STATUS_SUCCESS){
1514         app_key_index_and_credential_flag = (publication_model->friendship_credential_flag << 12) | publication_model->appkey_index;
1515         ttl = publication_model->ttl;
1516         period = publication_model->period;
1517         retransmit = publication_model->retransmit;
1518 
1519         publish_address = publication_model->address;
1520         if (mesh_network_address_virtual(publish_address)){
1521             mesh_virtual_address_t * virtual_address = mesh_virtual_address_for_pseudo_dst(publish_address);
1522             if (virtual_address){
1523                 publish_address = virtual_address->hash;
1524             }
1525         }
1526     }
1527 
1528     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(
1529             &mesh_foundation_config_model_publication_status, status, element_address, publish_address,
1530             app_key_index_and_credential_flag, ttl, period, retransmit, model_identifier);
1531     if (!transport_pdu) return;
1532 
1533     // send as segmented access pdu
1534     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
1535 }
1536 
1537 static void
1538 config_model_publication_set_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
1539 
1540     // set defaults
1541     memset(&configuration_server_publication_model, 0, sizeof(mesh_publication_model_t));
1542 
1543     mesh_access_parser_state_t parser;
1544     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1545 
1546     // ElementAddress
1547     uint16_t element_address = mesh_access_parser_get_uint16(&parser);
1548 
1549     // PublishAddress, 16 bit
1550     configuration_server_publication_model.address = mesh_access_parser_get_uint16(&parser);
1551 
1552     // AppKeyIndex (12), CredentialFlag (1), RFU (3)
1553     uint16_t temp = mesh_access_parser_get_uint16(&parser);
1554     configuration_server_publication_model.appkey_index = temp & 0x0fff;
1555     configuration_server_publication_model.friendship_credential_flag = (temp >> 12) & 1;
1556 
1557     // TTL
1558     configuration_server_publication_model.ttl        = mesh_access_parser_get_uint8(&parser);
1559 
1560     // Period
1561     configuration_server_publication_model.period     = mesh_access_parser_get_uint8(&parser);
1562 
1563     // Retransmit
1564     configuration_server_publication_model.retransmit = mesh_access_parser_get_uint8(&parser);
1565 
1566     // Model Identifier
1567     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1568 
1569     // Get Model for Element + Model Identifier
1570     uint8_t status;
1571     mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(element_address, model_identifier, &status);
1572 
1573     // Check if publicatation model struct provided
1574     if (status == MESH_FOUNDATION_STATUS_SUCCESS) {
1575         if (target_model->publication_model == NULL){
1576             status = MESH_FOUNDATION_STATUS_CANNOT_SET;
1577         }
1578     }
1579 
1580     // Check AppKey
1581     if (status == MESH_FOUNDATION_STATUS_SUCCESS){
1582         // check if appkey already exists
1583         mesh_transport_key_t * app_key = mesh_transport_key_get(configuration_server_publication_model.appkey_index);
1584         if (app_key == NULL) {
1585             status = MESH_FOUNDATION_STATUS_INVALID_APPKEY_INDEX;
1586         }
1587     }
1588 
1589     // Accept set
1590     if (status == MESH_FOUNDATION_STATUS_SUCCESS){
1591         // decrease ref count if old virtual address
1592         if (mesh_network_address_virtual(configuration_server_publication_model.address)) {
1593             mesh_virtual_address_t * current_virtual_address = mesh_virtual_address_for_pseudo_dst(configuration_server_publication_model.address);
1594             mesh_virtual_address_decrease_refcount(current_virtual_address);
1595         }
1596 
1597         // restart publication
1598         config_model_publication_changed(target_model, &configuration_server_publication_model);
1599     }
1600 
1601     // send status
1602     config_model_publication_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, element_address, model_identifier, &configuration_server_publication_model);
1603     mesh_access_message_processed(pdu);
1604 }
1605 
1606 static void config_model_publication_virtual_address_set_hash(void *arg){
1607     mesh_model_t *mesh_model = (mesh_model_t*) arg;
1608 
1609     // add if not exist
1610     mesh_virtual_address_t * virtual_address = mesh_virtual_address_for_label_uuid(configuration_server_label_uuid);
1611     if (virtual_address == NULL){
1612         virtual_address = mesh_virtual_address_register(configuration_server_label_uuid, configuration_server_hash);
1613     }
1614 
1615     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1616     if (virtual_address == NULL){
1617         status = MESH_FOUNDATION_STATUS_INSUFFICIENT_RESOURCES;
1618     } else {
1619 
1620         // increase ref count if new virtual address
1621         mesh_virtual_address_increase_refcount(virtual_address);
1622 
1623         // decrease ref count if old virtual address
1624         if (mesh_network_address_virtual(configuration_server_publication_model.address)) {
1625             mesh_virtual_address_t * current_virtual_address = mesh_virtual_address_for_pseudo_dst(configuration_server_publication_model.address);
1626             if (current_virtual_address){
1627                 mesh_virtual_address_decrease_refcount(current_virtual_address);
1628             }
1629         }
1630 
1631         configuration_server_publication_model.address = virtual_address->pseudo_dst;
1632         mesh_virtual_address_increase_refcount(virtual_address);
1633 
1634         // restart publication
1635         config_model_publication_changed(configuration_server_target_model, &configuration_server_publication_model);
1636     }
1637 
1638     // send status
1639     config_model_publication_status(mesh_model, mesh_pdu_netkey_index(access_pdu_in_process), mesh_pdu_src(access_pdu_in_process), status, configuration_server_element_address, configuration_server_model_identifier, &configuration_server_publication_model);
1640 
1641     mesh_access_message_processed(access_pdu_in_process);
1642 }
1643 
1644 static void
1645 config_model_publication_virtual_address_set_handler(mesh_model_t *mesh_model,
1646                                                      mesh_pdu_t * pdu) {
1647 
1648     // set defaults
1649     memset(&configuration_server_publication_model, 0, sizeof(mesh_publication_model_t));
1650 
1651     mesh_access_parser_state_t parser;
1652     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1653 
1654     // ElementAddress - Address of the element
1655     configuration_server_element_address = mesh_access_parser_get_uint16(&parser);
1656 
1657     // store label uuid
1658     mesh_access_parser_get_label_uuid(&parser, configuration_server_label_uuid);
1659 
1660     // AppKeyIndex (12), CredentialFlag (1), RFU (3)
1661     uint16_t temp = mesh_access_parser_get_uint16(&parser);
1662     configuration_server_publication_model.appkey_index = temp & 0x0fff;
1663     configuration_server_publication_model.friendship_credential_flag = (temp >> 12) & 1;
1664     configuration_server_publication_model.ttl        = mesh_access_parser_get_uint8(&parser);
1665     configuration_server_publication_model.period     = mesh_access_parser_get_uint8(&parser);
1666     configuration_server_publication_model.retransmit = mesh_access_parser_get_uint8(&parser);
1667 
1668     // Model Identifier
1669     configuration_server_model_identifier = mesh_access_parser_get_model_identifier(&parser);
1670 
1671     // Get Model for Element + Model Identifier
1672     uint8_t status;
1673     configuration_server_target_model = mesh_access_model_for_address_and_model_identifier(configuration_server_element_address, configuration_server_model_identifier, &status);
1674 
1675      // Check if publicatation model struct provided
1676      if (status == MESH_FOUNDATION_STATUS_SUCCESS) {
1677         if (configuration_server_target_model->publication_model == NULL){
1678             status = MESH_FOUNDATION_STATUS_CANNOT_SET;
1679         }
1680      }
1681 
1682      // Check AppKey
1683      if (status == MESH_FOUNDATION_STATUS_SUCCESS){
1684          // check if appkey already exists
1685          mesh_transport_key_t * app_key = mesh_transport_key_get(configuration_server_publication_model.appkey_index);
1686          if (app_key == NULL) {
1687              status = MESH_FOUNDATION_STATUS_INVALID_APPKEY_INDEX;
1688          }
1689      }
1690 
1691     // on error, no need to calculate virtual address hash
1692     if (status != MESH_FOUNDATION_STATUS_SUCCESS){
1693         config_model_publication_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, configuration_server_element_address, configuration_server_model_identifier, &configuration_server_publication_model);
1694         mesh_access_message_processed(pdu);
1695         return;
1696     }
1697 
1698     access_pdu_in_process = pdu;
1699     mesh_virtual_address(&configuration_server_cmac_request, configuration_server_label_uuid, &configuration_server_hash, &config_model_publication_virtual_address_set_hash, mesh_model);
1700 }
1701 
1702 static void
1703 config_model_publication_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
1704 
1705 
1706     mesh_access_parser_state_t parser;
1707     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1708 
1709     // ElementAddress - Address of the element - should be us
1710     uint16_t element_address = mesh_access_parser_get_uint16(&parser);
1711 
1712     // Model Identifier
1713     uint32_t model_identifier = mesh_access_parser_get_model_identifier(&parser);
1714 
1715     // Get Model for Element + Model Identifier
1716     uint8_t status;
1717     mesh_model_t * target_model = mesh_access_model_for_address_and_model_identifier(element_address, model_identifier, &status);
1718 
1719     mesh_publication_model_t * publication_model;
1720     if (target_model == NULL){
1721         // use defaults
1722         memset(&configuration_server_publication_model, 0, sizeof(mesh_publication_model_t));
1723         publication_model = &configuration_server_publication_model;
1724     } else {
1725         publication_model = target_model->publication_model;
1726     }
1727 
1728     config_model_publication_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, element_address, model_identifier, publication_model);
1729     mesh_access_message_processed(pdu);
1730 }
1731 
1732 // Heartbeat Publication
1733 
1734 static void config_heartbeat_publication_emit(mesh_heartbeat_publication_t * mesh_heartbeat_publication){
1735 
1736     printf("CONFIG_SERVER_HEARTBEAT: Emit (dest %04x, count %u, period %" PRIu32 " ms)\n",
1737         mesh_heartbeat_publication->destination,
1738         mesh_heartbeat_publication->count,
1739         mesh_heartbeat_publication->period_ms);
1740 
1741     // active features
1742     mesh_heartbeat_publication->active_features = mesh_foundation_get_features();
1743 
1744     mesh_network_pdu_t * network_pdu = mesh_network_pdu_get();
1745     if (network_pdu){
1746         uint8_t data[3];
1747         data[0] = mesh_heartbeat_publication->ttl;
1748         big_endian_store_16(data, 1, mesh_heartbeat_publication->active_features);
1749         uint8_t status = mesh_upper_transport_setup_unsegmented_control_pdu(network_pdu, mesh_heartbeat_publication->netkey_index,
1750                 mesh_heartbeat_publication->ttl, mesh_node_get_primary_element_address(), mesh_heartbeat_publication->destination,
1751                 MESH_TRANSPORT_OPCODE_HEARTBEAT, data, sizeof(data));
1752         if (status){
1753             // stop periodic emit on error (netkey got invalid)
1754             mesh_heartbeat_publication->period_ms = 0;
1755             mesh_network_pdu_free(network_pdu);
1756         } else {
1757             mesh_upper_transport_send_control_pdu((mesh_pdu_t *) network_pdu);
1758         }
1759     }
1760 
1761     // forever
1762     if (mesh_heartbeat_publication->count > 0 && mesh_heartbeat_publication->count < 0xffffu) {
1763         mesh_heartbeat_publication->count--;
1764     }
1765 }
1766 void mesh_configuration_server_feature_changed(void){
1767     mesh_model_t * mesh_model = mesh_node_get_configuration_server();
1768     mesh_heartbeat_publication_t * mesh_heartbeat_publication = &((mesh_configuration_server_model_context_t*) mesh_model->model_data)->heartbeat_publication;
1769 
1770     // filter features by observed features for heartbeats
1771     uint16_t current_features  = mesh_foundation_get_features()              & mesh_heartbeat_publication->features;
1772     uint16_t previous_features = mesh_heartbeat_publication->active_features & mesh_heartbeat_publication->features;
1773 
1774     // changes?
1775     if (current_features == previous_features) return;
1776 
1777     config_heartbeat_publication_emit(mesh_heartbeat_publication);
1778 }
1779 
1780 static void config_heartbeat_publication_timeout_handler(btstack_timer_source_t * ts){
1781 
1782     mesh_heartbeat_publication_t * mesh_heartbeat_publication = (mesh_heartbeat_publication_t*) ts;
1783     mesh_heartbeat_publication->timer_active = 0;
1784 
1785     // emit beat
1786     config_heartbeat_publication_emit(mesh_heartbeat_publication);
1787 
1788     // all sent?
1789     if (mesh_heartbeat_publication->count == 0) return;
1790 
1791     // periodic publication?
1792     if (mesh_heartbeat_publication->period_ms == 0) return;
1793 
1794     btstack_run_loop_set_timer(ts, mesh_heartbeat_publication->period_ms);
1795     btstack_run_loop_add_timer(ts);
1796     mesh_heartbeat_publication->timer_active = 1;
1797 }
1798 
1799 static void config_heartbeat_publication_status(mesh_model_t *mesh_model, uint16_t netkey_index, uint16_t dest, uint8_t status, mesh_heartbeat_publication_t * mesh_heartbeat_publication){
1800     UNUSED(mesh_model);
1801 
1802     // setup message
1803     uint8_t count_log = mesh_heartbeat_count_log(mesh_heartbeat_publication->count);
1804     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(
1805             &mesh_foundation_config_heartbeat_publication_status,
1806             status,
1807             mesh_heartbeat_publication->destination,
1808             count_log,
1809             mesh_heartbeat_publication->period_log,
1810             mesh_heartbeat_publication->ttl,
1811             mesh_heartbeat_publication->features,
1812             mesh_heartbeat_publication->netkey_index);
1813     if (!transport_pdu) return;
1814 
1815     printf("MESH config_heartbeat_publication_status count = %u => count_log = %u\n", mesh_heartbeat_publication->count, count_log);
1816 
1817     // send as segmented access pdu
1818     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
1819 }
1820 
1821 static void config_heartbeat_publication_set_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
1822 
1823     mesh_heartbeat_publication_t requested_publication;
1824     memset(&requested_publication, 0, sizeof(requested_publication));
1825 
1826     mesh_access_parser_state_t parser;
1827     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1828 
1829     // Destination address for Heartbeat messages
1830     requested_publication.destination = mesh_access_parser_get_uint16(&parser);
1831     // Number of Heartbeat messages to be sent
1832     requested_publication.count = mesh_heartbeat_pwr2(mesh_access_parser_get_uint8(&parser));
1833     //  Period for sending Heartbeat messages
1834     requested_publication.period_log = mesh_access_parser_get_uint8(&parser);
1835     //  TTL to be used when sending Heartbeat messages
1836     requested_publication.ttl = mesh_access_parser_get_uint8(&parser);
1837     // Bit field indicating features that trigger Heartbeat messages when changed
1838     requested_publication.features = mesh_access_parser_get_uint16(&parser) & MESH_HEARTBEAT_FEATURES_SUPPORTED_MASK;
1839     // NetKey Index
1840     requested_publication.netkey_index = mesh_access_parser_get_uint16(&parser);
1841 
1842     // store period as ms
1843     requested_publication.period_ms = mesh_heartbeat_pwr2(requested_publication.period_log) * 1000;
1844 
1845     // store current features
1846     requested_publication.active_features = mesh_foundation_get_features();
1847 
1848     mesh_heartbeat_publication_t * mesh_heartbeat_publication = &((mesh_configuration_server_model_context_t*) mesh_model->model_data)->heartbeat_publication;
1849 
1850     // validate fields
1851     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1852     mesh_network_key_t * network_key = mesh_network_key_list_get(requested_publication.netkey_index);
1853     if (network_key == NULL){
1854         status = MESH_FOUNDATION_STATUS_INVALID_NETKEY_INDEX;
1855     } else {
1856         printf("MESH config_heartbeat_publication_set, destination %x, count = %x, period = %" PRIu32 " s\n",
1857             requested_publication.destination, requested_publication.count, requested_publication.period_ms);
1858 
1859         // stop timer if active
1860         // note: accept update below using memcpy overwwrite timer_active flag
1861         if (mesh_heartbeat_publication->timer_active){
1862             btstack_run_loop_remove_timer(&mesh_heartbeat_publication->timer);
1863             mesh_heartbeat_publication->timer_active = 0;
1864         }
1865 
1866         // accept update
1867         (void)memcpy(mesh_heartbeat_publication, &requested_publication,
1868                      sizeof(mesh_heartbeat_publication_t));
1869     }
1870 
1871     config_heartbeat_publication_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, mesh_heartbeat_publication);
1872 
1873     mesh_access_message_processed(pdu);
1874 
1875     if (status != MESH_FOUNDATION_STATUS_SUCCESS) return;
1876 
1877     // check if heartbeats should be disabled
1878     if (mesh_heartbeat_publication->destination == MESH_ADDRESS_UNSASSIGNED || mesh_heartbeat_publication->period_log == 0) {
1879         return;
1880     }
1881 
1882     // initial heartbeat after 2000 ms
1883     btstack_run_loop_set_timer_handler(&mesh_heartbeat_publication->timer, config_heartbeat_publication_timeout_handler);
1884     btstack_run_loop_set_timer_context(&mesh_heartbeat_publication->timer, mesh_heartbeat_publication);
1885     btstack_run_loop_set_timer(&mesh_heartbeat_publication->timer, 2000);
1886     btstack_run_loop_add_timer(&mesh_heartbeat_publication->timer);
1887     mesh_heartbeat_publication->timer_active = 1;
1888 }
1889 
1890 static void config_heartbeat_publication_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
1891     mesh_heartbeat_publication_t * mesh_heartbeat_publication = &((mesh_configuration_server_model_context_t*) mesh_model->model_data)->heartbeat_publication;
1892     config_heartbeat_publication_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), MESH_FOUNDATION_STATUS_SUCCESS, mesh_heartbeat_publication);
1893     mesh_access_message_processed(pdu);
1894 }
1895 
1896 // Heartbeat Subscription
1897 
1898 static void config_heartbeat_subscription_status(mesh_model_t *mesh_model, uint16_t netkey_index, uint16_t dest, uint8_t status, mesh_heartbeat_subscription_t * mesh_heartbeat_subscription){
1899     UNUSED(mesh_model);
1900 
1901     // setup message
1902     uint8_t count_log = mesh_heartbeat_count_log(mesh_heartbeat_subscription->count);
1903     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(
1904             &mesh_foundation_config_heartbeat_subscription_status,
1905             status,
1906             mesh_heartbeat_subscription->source,
1907             mesh_heartbeat_subscription->destination,
1908             mesh_heartbeat_subscription->period_log,
1909             count_log,
1910             mesh_heartbeat_subscription->min_hops,
1911             mesh_heartbeat_subscription->max_hops);
1912     if (!transport_pdu) return;
1913     printf("MESH config_heartbeat_subscription_status count = %u => count_log = %u\n", mesh_heartbeat_subscription->count, count_log);
1914 
1915     // send as segmented access pdu
1916     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
1917 }
1918 static int config_heartbeat_subscription_enabled(mesh_heartbeat_subscription_t * mesh_heartbeat_subscription){
1919     return mesh_network_address_unicast(mesh_heartbeat_subscription->source) && mesh_heartbeat_subscription->period_log > 0 &&
1920         (mesh_network_address_unicast(mesh_heartbeat_subscription->destination) || mesh_network_address_group(mesh_heartbeat_subscription->destination));
1921 }
1922 
1923 static void config_heartbeat_subscription_set_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
1924     mesh_access_parser_state_t parser;
1925     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
1926 
1927     mesh_heartbeat_subscription_t requested_subscription;
1928 
1929     // Destination address for Heartbeat messages
1930     requested_subscription.source = mesh_access_parser_get_uint16(&parser);
1931     // Destination address for Heartbeat messages
1932     requested_subscription.destination = mesh_access_parser_get_uint16(&parser);
1933     //  Period for sending Heartbeat messages
1934     requested_subscription.period_log = mesh_access_parser_get_uint8(&parser);
1935 
1936 
1937     // Hearbeat Subscription Soure must be unassigned or a unicast address
1938     int source_address_valid =
1939          (requested_subscription.source == MESH_ADDRESS_UNSASSIGNED)    ||
1940          (mesh_network_address_unicast(requested_subscription.source));
1941 
1942     // Heartbeat Subscription Destination must be unassigned, unicast (== our primary address), or a group address)
1943     int destination_address_valid =
1944          (requested_subscription.destination == MESH_ADDRESS_UNSASSIGNED)  ||
1945          (mesh_network_address_unicast(requested_subscription.destination) && requested_subscription.destination == mesh_node_get_primary_element_address()) ||
1946          (mesh_network_address_group(requested_subscription.destination));
1947 
1948     if (!source_address_valid || !destination_address_valid){
1949         printf("MESH config_heartbeat_subscription_set, source %x or destination %x invalid\n", requested_subscription.source, requested_subscription.destination);
1950         mesh_access_message_processed(pdu);
1951         return;
1952     }
1953 
1954     int subscription_enabled = config_heartbeat_subscription_enabled(&requested_subscription);
1955     printf("MESH config_heartbeat_subscription_set, source %x destination %x, period = %u s => enabled %u \n", requested_subscription.source,
1956             requested_subscription.destination, mesh_heartbeat_pwr2(requested_subscription.period_log), subscription_enabled);
1957 
1958     // ignore messages
1959     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
1960     if (requested_subscription.period_log > 0x11u){
1961         status = MESH_FOUNDATION_STATUS_CANNOT_SET;
1962     } else if ((requested_subscription.destination != MESH_ADDRESS_UNSASSIGNED)  &&
1963                !mesh_network_address_unicast(requested_subscription.destination) &&
1964                !mesh_network_address_group(requested_subscription.destination)){
1965         status = MESH_FOUNDATION_STATUS_INVALID_ADDRESS;
1966     }
1967 
1968     if (status != MESH_FOUNDATION_STATUS_SUCCESS){
1969         config_heartbeat_subscription_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, &requested_subscription);
1970         mesh_access_message_processed(pdu);
1971         return;
1972     }
1973 
1974     mesh_heartbeat_subscription_t * mesh_heartbeat_subscription = &((mesh_configuration_server_model_context_t*) mesh_model->model_data)->heartbeat_subscription;
1975 
1976     if (config_heartbeat_subscription_enabled(&requested_subscription)){
1977         mesh_heartbeat_subscription->source          = requested_subscription.source;
1978         mesh_heartbeat_subscription->destination     = requested_subscription.destination;
1979         mesh_heartbeat_subscription->period_log      = requested_subscription.period_log;
1980         mesh_heartbeat_subscription->count           = 0;
1981         mesh_heartbeat_subscription->min_hops        = 0x7Fu;
1982         mesh_heartbeat_subscription->max_hops        = 0u;
1983         mesh_heartbeat_subscription->period_start_ms = btstack_run_loop_get_time_ms();
1984     } else {
1985 #if 0
1986         // code according to Mesh Spec v1.0.1
1987         // "When an element receives a Config Heartbeat Subscription Set message, it shall ... respond with a Config Heartbeat Subscription Status message, setting ...
1988         //  If the Source or the Destination field is set to the unassigned address, or the PeriodLog field is set to 0x00, [then]
1989         //  - the processing of received Heartbeat messages shall be disabled,
1990         //  - the Heartbeat Subscription Source state shall be set to the unassigned address,
1991         //  - the Heartbeat Subscription Destination state shall be set to the unassigned address,
1992         //  - the Heartbeat Subscription MinHops state shall be unchanged,
1993         //  - the Heartbeat Subscription MaxHops state shall be unchanged,
1994         //  - and the Heartbeat Subscription Count state shall be unchanged."
1995         // If period_log == 0, then set src + dest to unassigned. If src or dest are unsigned, get triggers status mit count_log == 0
1996         mesh_heartbeat_subscription->source          = MESH_ADDRESS_UNSASSIGNED;
1997         mesh_heartbeat_subscription->destination     = MESH_ADDRESS_UNSASSIGNED;
1998 #else
1999         // code to satisfy MESH/NODE/CFG/HBS/BV-02-C from PTS 7.4.1 / Mesh TS 1.0.2
2000         if (requested_subscription.source == MESH_ADDRESS_UNSASSIGNED || requested_subscription.destination == MESH_ADDRESS_UNSASSIGNED){
2001             mesh_heartbeat_subscription->source          = MESH_ADDRESS_UNSASSIGNED;
2002             mesh_heartbeat_subscription->destination     = MESH_ADDRESS_UNSASSIGNED;
2003         }
2004 #endif
2005         mesh_heartbeat_subscription->period_log      = 0u;
2006     }
2007 
2008     config_heartbeat_subscription_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, mesh_heartbeat_subscription);
2009     mesh_access_message_processed(pdu);
2010 }
2011 
2012 static uint32_t config_heartbeat_subscription_get_period_remaining_s(mesh_heartbeat_subscription_t * heartbeat_subscription){
2013     // calculate period_log
2014     int32_t time_since_start_s = btstack_time_delta(btstack_run_loop_get_time_ms(), heartbeat_subscription->period_start_ms) / 1000;
2015     int32_t period_s = mesh_heartbeat_pwr2(heartbeat_subscription->period_log);
2016     uint32_t period_remaining_s = 0;
2017     if (time_since_start_s < period_s){
2018         period_remaining_s = period_s - time_since_start_s;
2019     }
2020     printf("Heartbeat: time since start %" PRId32 " s, period %" PRIu32 " s, period remaining %" PRIu32 " s\n", time_since_start_s, period_s, period_remaining_s);
2021     return period_remaining_s;
2022 }
2023 
2024 static void config_heartbeat_subscription_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu) {
2025     mesh_heartbeat_subscription_t * mesh_heartbeat_subscription = &((mesh_configuration_server_model_context_t*) mesh_model->model_data)->heartbeat_subscription;
2026     mesh_heartbeat_subscription_t subscription;
2027     (void)memcpy(&subscription, mesh_heartbeat_subscription,
2028                  sizeof(subscription));
2029     if (mesh_heartbeat_subscription->source == MESH_ADDRESS_UNSASSIGNED || mesh_heartbeat_subscription->destination == MESH_ADDRESS_UNSASSIGNED){
2030         memset(&subscription, 0, sizeof(subscription));
2031     } else {
2032         // calculate period_log
2033         uint32_t period_remaining_s = config_heartbeat_subscription_get_period_remaining_s(&subscription);
2034         subscription.period_log = mesh_heartbeat_period_log(period_remaining_s);
2035     }
2036     config_heartbeat_subscription_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), MESH_FOUNDATION_STATUS_SUCCESS, &subscription);
2037     mesh_access_message_processed(pdu);
2038 }
2039 
2040 // KeyRefresh Phase
2041 
2042 static void config_key_refresh_phase_status(mesh_model_t *mesh_model, uint16_t netkey_index_dest, uint16_t dest, uint8_t status, uint16_t netkey_index,
2043     mesh_key_refresh_state_t key_refresh_state){
2044     UNUSED(mesh_model);
2045 
2046     // setup message
2047     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(
2048         &mesh_key_refresh_phase_status,
2049         status,
2050         netkey_index,
2051         key_refresh_state);
2052     if (!transport_pdu) return;
2053 
2054     // send as segmented access pdu
2055     config_server_send_message(netkey_index_dest, dest, (mesh_pdu_t *) transport_pdu);
2056 }
2057 
2058 static void config_key_refresh_phase_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
2059     mesh_access_parser_state_t parser;
2060     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
2061     uint16_t netkey_index = mesh_access_parser_get_uint16(&parser);
2062     mesh_subnet_t * subnet = mesh_subnet_get_by_netkey_index(netkey_index);
2063 
2064     uint8_t status = MESH_FOUNDATION_STATUS_INVALID_NETKEY_INDEX;
2065     mesh_key_refresh_state_t key_refresh_state = MESH_KEY_REFRESH_NOT_ACTIVE;
2066 
2067     if (subnet != NULL){
2068         status = MESH_FOUNDATION_STATUS_SUCCESS;
2069         key_refresh_state = subnet->key_refresh;
2070     }
2071 
2072     config_key_refresh_phase_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, netkey_index, key_refresh_state);
2073     mesh_access_message_processed(pdu);
2074 }
2075 
2076 static void config_key_refresh_phase_set_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
2077     mesh_access_parser_state_t parser;
2078     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
2079     uint16_t netkey_index = mesh_access_parser_get_uint16(&parser);
2080     uint8_t  key_refresh_phase_transition = mesh_access_parser_get_uint8(&parser);
2081     mesh_subnet_t * subnet = mesh_subnet_get_by_netkey_index(netkey_index);
2082 
2083     uint8_t status = MESH_FOUNDATION_STATUS_INVALID_NETKEY_INDEX;
2084 
2085     if (subnet != NULL){
2086         status = MESH_FOUNDATION_STATUS_SUCCESS;
2087 
2088         switch (key_refresh_phase_transition){
2089             case 0x02:
2090                 switch (subnet->key_refresh){
2091                     case MESH_KEY_REFRESH_FIRST_PHASE:
2092                     case MESH_KEY_REFRESH_SECOND_PHASE:
2093                         subnet->key_refresh = MESH_KEY_REFRESH_SECOND_PHASE;
2094                         break;
2095                     default:
2096                         break;
2097                 }
2098                 break;
2099             case 0x03:
2100                 switch (subnet->key_refresh){
2101                     case MESH_KEY_REFRESH_FIRST_PHASE:
2102                     case MESH_KEY_REFRESH_SECOND_PHASE:
2103                         // key refresh phase 3 entered
2104                         mesh_access_key_refresh_revoke_keys(subnet);
2105                         subnet->key_refresh = MESH_KEY_REFRESH_NOT_ACTIVE;
2106                         break;
2107                     default:
2108                         break;
2109                 }
2110                 break;
2111             default:
2112                 status = MESH_FOUNDATION_STATUS_CANNOT_SET;
2113                 break;
2114         }
2115     }
2116 
2117     config_key_refresh_phase_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, netkey_index, subnet->key_refresh);
2118     mesh_access_message_processed(pdu);
2119 }
2120 
2121 
2122 static void config_node_reset_status(mesh_model_t *mesh_model, uint16_t netkey_index, uint16_t dest){
2123     UNUSED(mesh_model);
2124 
2125     // setup message
2126     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(&mesh_foundation_node_reset_status);
2127     if (!transport_pdu) return;
2128 
2129     // send as segmented access pdu
2130     config_server_send_message(netkey_index, dest, (mesh_pdu_t *) transport_pdu);
2131 }
2132 
2133 static void config_node_reset_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
2134     mesh_node_reset();
2135     config_node_reset_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu));
2136     mesh_access_message_processed(pdu);
2137 }
2138 
2139 static void low_power_node_poll_timeout_status(mesh_model_t *mesh_model, uint16_t netkey_index_dest, uint16_t dest, uint8_t status){
2140     UNUSED(mesh_model);
2141 
2142     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(
2143         &mesh_foundation_low_power_node_poll_timeout_status,
2144         status,
2145         0,  // The unicast address of the Low Power node
2146         0); // The current value of the PollTimeout timer of the Low Power node
2147     if (!transport_pdu) return;
2148     printf("TODO: send unicast address of the Low Power node and the current value of the PollTimeout timer, instead of 0s\n");
2149     // send as segmented access pdu
2150     config_server_send_message(netkey_index_dest, dest, (mesh_pdu_t *) transport_pdu);
2151 }
2152 
2153 static void config_low_power_node_poll_timeout_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
2154     mesh_access_parser_state_t parser;
2155     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
2156     printf("TODO: implement get the current value of PollTimeout timer of the Low Power node within a Friend node\n");
2157     low_power_node_poll_timeout_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), MESH_FOUNDATION_STATUS_SUCCESS);
2158 
2159     mesh_access_message_processed(pdu);
2160 }
2161 
2162 static void config_node_identity_status(mesh_model_t *mesh_model, uint16_t netkey_index_dest, uint16_t dest, uint8_t status, uint16_t netkey_index,
2163     mesh_node_identity_state_t node_identity_state){
2164     UNUSED(mesh_model);
2165 
2166     // setup message
2167     mesh_upper_transport_pdu_t * transport_pdu = mesh_access_setup_message(
2168         &mesh_foundation_node_identity_status,
2169         status,
2170         netkey_index,
2171         node_identity_state);
2172     if (!transport_pdu) return;
2173 
2174     // send as segmented access pdu
2175     config_server_send_message(netkey_index_dest, dest, (mesh_pdu_t *) transport_pdu);
2176 }
2177 
2178 static void config_node_identity_get_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
2179     mesh_access_parser_state_t parser;
2180     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
2181     uint16_t netkey_index = mesh_access_parser_get_uint16(&parser);
2182 
2183     mesh_node_identity_state_t node_identity_state = MESH_NODE_IDENTITY_STATE_ADVERTISING_NOT_SUPPORTED;
2184     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
2185 #ifdef ENABLE_MESH_PROXY_SERVER
2186     status = mesh_proxy_get_advertising_with_node_id_status(netkey_index, &node_identity_state);
2187 #endif
2188     config_node_identity_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, netkey_index, node_identity_state);
2189 
2190     mesh_access_message_processed(pdu);
2191 }
2192 
2193 static void config_node_identity_set_handler(mesh_model_t *mesh_model, mesh_pdu_t * pdu){
2194     mesh_access_parser_state_t parser;
2195     mesh_access_parser_init(&parser, (mesh_pdu_t*) pdu);
2196     uint16_t netkey_index = mesh_access_parser_get_uint16(&parser);
2197     mesh_node_identity_state_t node_identity_state = (mesh_node_identity_state_t) mesh_access_parser_get_uint8(&parser);
2198 
2199     // ignore invalid state
2200     if (node_identity_state >= MESH_NODE_IDENTITY_STATE_ADVERTISING_NOT_SUPPORTED) {
2201         mesh_access_message_processed(pdu);
2202         return;
2203     }
2204 
2205     uint8_t status = MESH_FOUNDATION_STATUS_SUCCESS;
2206 #ifdef ENABLE_MESH_PROXY_SERVER
2207     status = mesh_proxy_set_advertising_with_node_id(netkey_index, node_identity_state);
2208 #else
2209     mesh_subnet_t * network_key = mesh_subnet_get_by_netkey_index(netkey_index);
2210     if (network_key == NULL){
2211         status = MESH_FOUNDATION_STATUS_INVALID_NETKEY_INDEX;
2212     }
2213 #endif
2214 
2215     config_node_identity_status(mesh_model, mesh_pdu_netkey_index(pdu), mesh_pdu_src(pdu), status, netkey_index, node_identity_state);
2216 
2217     mesh_access_message_processed(pdu);
2218 }
2219 
2220 //
2221 
2222 const static mesh_operation_t mesh_configuration_server_model_operations[] = {
2223     { MESH_FOUNDATION_OPERATION_APPKEY_ADD,                                  19, config_appkey_add_handler },
2224     { MESH_FOUNDATION_OPERATION_APPKEY_DELETE,                                3, config_appkey_delete_handler },
2225     { MESH_FOUNDATION_OPERATION_APPKEY_GET,                                   2, config_appkey_get_handler },
2226     { MESH_FOUNDATION_OPERATION_APPKEY_UPDATE,                               19, config_appkey_update_handler },
2227     { MESH_FOUNDATION_OPERATION_NETKEY_ADD,                                  18, config_netkey_add_handler },
2228     { MESH_FOUNDATION_OPERATION_NETKEY_UPDATE,                               18, config_netkey_update_handler },
2229     { MESH_FOUNDATION_OPERATION_NETKEY_DELETE,                                2, config_netkey_delete_handler },
2230     { MESH_FOUNDATION_OPERATION_NETKEY_GET,                                   0, config_netkey_get_handler },
2231     { MESH_FOUNDATION_OPERATION_COMPOSITION_DATA_GET,                         1, config_composition_data_get_handler },
2232     { MESH_FOUNDATION_OPERATION_BEACON_GET,                                   0, config_beacon_get_handler },
2233     { MESH_FOUNDATION_OPERATION_BEACON_SET,                                   1, config_beacon_set_handler },
2234     { MESH_FOUNDATION_OPERATION_DEFAULT_TTL_GET,                              0, config_default_ttl_get_handler },
2235     { MESH_FOUNDATION_OPERATION_DEFAULT_TTL_SET,                              1, config_default_ttl_set_handler },
2236     { MESH_FOUNDATION_OPERATION_FRIEND_GET,                                   0, config_friend_get_handler },
2237     { MESH_FOUNDATION_OPERATION_FRIEND_SET,                                   1, config_friend_set_handler },
2238     { MESH_FOUNDATION_OPERATION_NETWORK_TRANSMIT_GET,                         0, config_model_network_transmit_get_handler },
2239     { MESH_FOUNDATION_OPERATION_NETWORK_TRANSMIT_SET,                         1, config_model_network_transmit_set_handler },
2240     { MESH_FOUNDATION_OPERATION_GATT_PROXY_GET,                               0, config_gatt_proxy_get_handler },
2241     { MESH_FOUNDATION_OPERATION_GATT_PROXY_SET,                               1, config_gatt_proxy_set_handler },
2242     { MESH_FOUNDATION_OPERATION_RELAY_GET,                                    0, config_relay_get_handler },
2243     { MESH_FOUNDATION_OPERATION_RELAY_SET,                                    1, config_relay_set_handler },
2244     { MESH_FOUNDATION_OPERATION_MODEL_SUBSCRIPTION_ADD,                       6, config_model_subscription_add_handler },
2245     { MESH_FOUNDATION_OPERATION_MODEL_SUBSCRIPTION_VIRTUAL_ADDRESS_ADD,      20, config_model_subscription_virtual_address_add_handler },
2246     { MESH_FOUNDATION_OPERATION_MODEL_SUBSCRIPTION_DELETE,                    6, config_model_subscription_delete_handler },
2247     { MESH_FOUNDATION_OPERATION_MODEL_SUBSCRIPTION_VIRTUAL_ADDRESS_DELETE,   20, config_model_subscription_virtual_address_delete_handler },
2248     { MESH_FOUNDATION_OPERATION_MODEL_SUBSCRIPTION_OVERWRITE,                 6, config_model_subscription_overwrite_handler },
2249     { MESH_FOUNDATION_OPERATION_MODEL_SUBSCRIPTION_VIRTUAL_ADDRESS_OVERWRITE,20, config_model_subscription_virtual_address_overwrite_handler },
2250     { MESH_FOUNDATION_OPERATION_MODEL_SUBSCRIPTION_DELETE_ALL,                4, config_model_subscription_delete_all_handler },
2251     { MESH_FOUNDATION_OPERATION_SIG_MODEL_SUBSCRIPTION_GET,                   4, config_model_subscription_get_handler },
2252     { MESH_FOUNDATION_OPERATION_VENDOR_MODEL_SUBSCRIPTION_GET,                6, config_model_subscription_get_handler },
2253     { MESH_FOUNDATION_OPERATION_SIG_MODEL_APP_GET,                            4, config_model_app_get_handler },
2254     { MESH_FOUNDATION_OPERATION_VENDOR_MODEL_APP_GET,                         6, config_model_app_get_handler },
2255     { MESH_FOUNDATION_OPERATION_MODEL_PUBLICATION_SET,                       11, config_model_publication_set_handler },
2256     { MESH_FOUNDATION_OPERATION_MODEL_PUBLICATION_VIRTUAL_ADDRESS_SET,       25, config_model_publication_virtual_address_set_handler },
2257     { MESH_FOUNDATION_OPERATION_MODEL_PUBLICATION_GET,                        4, config_model_publication_get_handler },
2258     { MESH_FOUNDATION_OPERATION_MODEL_APP_BIND,                               6, config_model_app_bind_handler },
2259     { MESH_FOUNDATION_OPERATION_MODEL_APP_UNBIND,                             6, config_model_app_unbind_handler },
2260     { MESH_FOUNDATION_OPERATION_HEARTBEAT_PUBLICATION_GET,                    0, config_heartbeat_publication_get_handler },
2261     { MESH_FOUNDATION_OPERATION_HEARTBEAT_PUBLICATION_SET,                    9, config_heartbeat_publication_set_handler },
2262     { MESH_FOUNDATION_OPERATION_HEARTBEAT_SUBSCRIPTION_GET,                   0, config_heartbeat_subscription_get_handler},
2263     { MESH_FOUNDATION_OPERATION_HEARTBEAT_SUBSCRIPTION_SET,                   5, config_heartbeat_subscription_set_handler},
2264     { MESH_FOUNDATION_OPERATION_KEY_REFRESH_PHASE_GET,                        2, config_key_refresh_phase_get_handler },
2265     { MESH_FOUNDATION_OPERATION_KEY_REFRESH_PHASE_SET,                        3, config_key_refresh_phase_set_handler },
2266     { MESH_FOUNDATION_OPERATION_NODE_RESET,                                   0, config_node_reset_handler },
2267     { MESH_FOUNDATION_OPERATION_LOW_POWER_NODE_POLL_TIMEOUT_GET,              2, config_low_power_node_poll_timeout_get_handler },
2268     { MESH_FOUNDATION_OPERATION_NODE_IDENTITY_GET,                            2, config_node_identity_get_handler },
2269     { MESH_FOUNDATION_OPERATION_NODE_IDENTITY_SET,                            3, config_node_identity_set_handler },
2270     { 0, 0, NULL }
2271 };
2272 
2273 const mesh_operation_t * mesh_configuration_server_get_operations(void){
2274     return mesh_configuration_server_model_operations;
2275 }
2276 
2277 void mesh_configuration_server_process_heartbeat(mesh_model_t * configuration_server_model, uint16_t src, uint16_t dest, uint8_t hops, uint16_t features){
2278     UNUSED(features);
2279     mesh_heartbeat_subscription_t * mesh_heartbeat_subscription = &((mesh_configuration_server_model_context_t*) configuration_server_model->model_data)->heartbeat_subscription;
2280     if (config_heartbeat_subscription_get_period_remaining_s(mesh_heartbeat_subscription) == 0) return;
2281     if (mesh_heartbeat_subscription->source != src) return;
2282     if (mesh_heartbeat_subscription->destination != dest) return;
2283     // update count
2284     if (mesh_heartbeat_subscription->count != 0xffff){
2285         mesh_heartbeat_subscription->count++;
2286     }
2287     // update min/max hops
2288     mesh_heartbeat_subscription->min_hops = (uint8_t) btstack_min(mesh_heartbeat_subscription->min_hops, hops);
2289     mesh_heartbeat_subscription->max_hops = (uint8_t) btstack_max(mesh_heartbeat_subscription->max_hops, hops);
2290 
2291     printf("HEARTBEAT, count %u, min %u, max %u hops\n", mesh_heartbeat_subscription->count, mesh_heartbeat_subscription->min_hops, mesh_heartbeat_subscription->max_hops);
2292 }
2293