Generate and store local IRK for non-esp32 devices.

Author: h2zero

src/nimble/nimble/host/store/config/src/ble_store_config_conf.c

@@ -79,6 +79,14 @@ static struct conf_handler ble_store_config_conf_handler = {
 #define BLE_STORE_CONFIG_RPA_REC_SET_ENCODE_SZ \
     (MYNEWT_VAL(BLE_STORE_MAX_BONDS) * BLE_STORE_CONFIG_RPA_REC_ENCODE_SZ + 1)
 
+#define BLE_STORE_CONFIG_IRK_ENCODE_SZ     \
+    BASE64_ENCODE_SIZE(sizeof (struct ble_store_value_local_irk))
+
+#define BLE_STORE_CONFIG_IRK_SET_ENCODE_SZ \
+    (MYNEWT_VAL(BLE_STORE_MAX_BONDS) * BLE_STORE_CONFIG_IRK_ENCODE_SZ + 1)
+
+static const uint32_t our_irk  = 0x6b72696f; /* oirk */
+
 static void
 ble_store_config_serialize_arr(const void *arr, int obj_sz, int num_objs,
                                char *out_buf, int buf_sz)
@@ -299,7 +307,7 @@ ble_store_config_persist_eads(void)
 int
 ble_store_config_persist_rpa_recs(void)
 {
-#ifdef ESP_PLATFORM
+#if 0
     char buf[BLE_STORE_CONFIG_RPA_REC_SET_ENCODE_SZ];
     int rc;
     ble_store_config_serialize_arr(ble_store_config_rpa_recs,
@@ -316,11 +324,23 @@ ble_store_config_persist_rpa_recs(void)
     return BLE_HS_ESTORE_FAIL;
 }
 
-#ifndef ESP_PLATFORM
-int ble_store_config_persist_local_irk(void){
-    return BLE_HS_ESTORE_FAIL;
+int
+ble_store_config_persist_local_irk(void) {
+    char buf[BLE_STORE_CONFIG_IRK_SET_ENCODE_SZ];
+    int rc;
+
+    ble_store_config_serialize_arr(ble_store_config_local_irks,
+                                   sizeof *ble_store_config_local_irks,
+                                   ble_store_config_num_local_irks,
+                                   buf, sizeof buf);
+
+    rc = ble_bond_nvs_save_entry(our_irk, buf);
+    if (rc != 0) {
+        return BLE_HS_ESTORE_FAIL;
+    }
+
+    return 0;
 }
-#endif
 
 void
 ble_store_config_conf_init(void)
@@ -375,6 +395,19 @@ ble_store_config_conf_init(void)
         }
     }
 
+    rc = ble_bond_nvs_get_entry(our_irk, &val_addr);
+    if (rc == 0) {
+        rc = ble_store_config_deserialize_arr(
+                (char*)val_addr,
+                ble_store_config_local_irks,
+                sizeof *ble_store_config_local_irks,
+                &ble_store_config_num_local_irks);
+        if (rc != 0) {
+             BLE_HS_LOG(ERROR, "irk restore error rc=%d\n", rc);
+            return;
+        }
+    }
+
  /*   int rc;
 
     rc = conf_register(&ble_store_config_conf_handler);