/* * SPDX-FileCopyrightText: 2019-2021 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ #include #include #include #include "esp_bt.h" #include #include #include "wifi_provisioning/scheme_ble.h" #include "wifi_provisioning_priv.h" static const char *TAG = "wifi_prov_scheme_ble"; extern const wifi_prov_scheme_t wifi_prov_scheme_ble; static uint8_t *custom_service_uuid; static uint8_t *custom_manufacturer_data; static size_t custom_manufacturer_data_len; static esp_err_t prov_start(protocomm_t *pc, void *config) { if (!pc) { ESP_LOGE(TAG, "Protocomm handle cannot be null"); return ESP_ERR_INVALID_ARG; } if (!config) { ESP_LOGE(TAG, "Cannot start with null configuration"); return ESP_ERR_INVALID_ARG; } protocomm_ble_config_t *ble_config = (protocomm_ble_config_t *) config; #ifdef CONFIG_WIFI_PROV_BLE_BONDING ble_config->ble_bonding = 1; #endif /* Start protocomm as BLE service */ if (protocomm_ble_start(pc, ble_config) != ESP_OK) { ESP_LOGE(TAG, "Failed to start protocomm BLE service"); return ESP_FAIL; } return ESP_OK; } esp_err_t wifi_prov_scheme_ble_set_service_uuid(uint8_t *uuid128) { if (!uuid128) { return ESP_ERR_INVALID_ARG; } custom_service_uuid = uuid128; return ESP_OK; } esp_err_t wifi_prov_scheme_ble_set_mfg_data(uint8_t *mfg_data, ssize_t mfg_data_len) { if (!mfg_data || !mfg_data_len) { return ESP_ERR_INVALID_ARG; } custom_manufacturer_data = (uint8_t *) malloc(mfg_data_len); if (custom_manufacturer_data == NULL) { ESP_LOGE(TAG, "Error allocating memory for mfg_data"); return ESP_ERR_NO_MEM; } custom_manufacturer_data_len = mfg_data_len; memcpy(custom_manufacturer_data, mfg_data, mfg_data_len); return ESP_OK; } static void *new_config(void) { protocomm_ble_config_t *ble_config = calloc(1, sizeof(protocomm_ble_config_t)); if (!ble_config) { ESP_LOGE(TAG, "Error allocating memory for new configuration"); return NULL; } /* The default provisioning service UUID */ const uint8_t service_uuid[16] = { /* LSB <--------------------------------------- * ---------------------------------------> MSB */ 0x07, 0xed, 0x9b, 0x2d, 0x0f, 0x06, 0x7c, 0x87, 0x9b, 0x43, 0x43, 0x6b, 0x4d, 0x24, 0x75, 0x17, }; memcpy(ble_config->service_uuid, service_uuid, sizeof(ble_config->service_uuid)); return ble_config; } static void delete_config(void *config) { if (!config) { ESP_LOGE(TAG, "Cannot delete null configuration"); return; } protocomm_ble_config_t *ble_config = (protocomm_ble_config_t *) config; for (unsigned int i = 0; i < ble_config->nu_lookup_count; i++) { free((void *)ble_config->nu_lookup[i].name); } free(ble_config->nu_lookup); free(ble_config); } static esp_err_t set_config_service(void *config, const char *service_name, const char *service_key) { if (!config) { ESP_LOGE(TAG, "Cannot set null configuration"); return ESP_ERR_INVALID_ARG; } if (!service_name) { ESP_LOGE(TAG, "Service name cannot be NULL"); return ESP_ERR_INVALID_ARG; } protocomm_ble_config_t *ble_config = (protocomm_ble_config_t *) config; strlcpy(ble_config->device_name, service_name, sizeof(ble_config->device_name)); /* If a custom service UUID has been provided, override the default one */ if (custom_service_uuid) { memcpy(ble_config->service_uuid, custom_service_uuid, sizeof(ble_config->service_uuid)); } /* Set manufacturer data if it is provided by app */ if (custom_manufacturer_data) { size_t mfg_data_len = custom_manufacturer_data_len; /* Manufacturer Data Length + 2 Byte header + BLE Device name + 2 Byte * header <= 31 Bytes */ if (mfg_data_len > (MAX_BLE_MANUFACTURER_DATA_LEN - sizeof(ble_config->device_name) - 2)) { ESP_LOGE(TAG, "Manufacturer data length is more than the max allowed size; expect truncated mfg_data "); /* XXX Does it even make any sense to set truncated mfg_data ? The * only reason to not return failure from here is provisioning * should continue as it is with error prints for mfg_data length */ mfg_data_len = MAX_BLE_MANUFACTURER_DATA_LEN - sizeof(ble_config->device_name) - 2; } ble_config->manufacturer_data = custom_manufacturer_data; ble_config->manufacturer_data_len = mfg_data_len; } else { ble_config->manufacturer_data = NULL; ble_config->manufacturer_data_len = 0; } return ESP_OK; } static esp_err_t set_config_endpoint(void *config, const char *endpoint_name, uint16_t uuid) { if (!config) { ESP_LOGE(TAG, "Cannot set null configuration"); return ESP_ERR_INVALID_ARG; } if (!endpoint_name) { ESP_LOGE(TAG, "EP name cannot be null"); return ESP_ERR_INVALID_ARG; } protocomm_ble_config_t *ble_config = (protocomm_ble_config_t *) config; char *copy_ep_name = strdup(endpoint_name); if (!copy_ep_name) { ESP_LOGE(TAG, "Error allocating memory for EP name"); return ESP_ERR_NO_MEM; } protocomm_ble_name_uuid_t *lookup_table = ( realloc(ble_config->nu_lookup, (ble_config->nu_lookup_count + 1) * sizeof(protocomm_ble_name_uuid_t))); if (!lookup_table) { ESP_LOGE(TAG, "Error allocating memory for EP-UUID lookup table"); return ESP_ERR_NO_MEM; } lookup_table[ble_config->nu_lookup_count].name = copy_ep_name; lookup_table[ble_config->nu_lookup_count].uuid = uuid; ble_config->nu_lookup = lookup_table; ble_config->nu_lookup_count += 1; return ESP_OK; } /* Used when both BT and BLE are not needed by application */ void wifi_prov_scheme_ble_event_cb_free_btdm(void *user_data, wifi_prov_cb_event_t event, void *event_data) { esp_err_t err; switch (event) { case WIFI_PROV_INIT: /* Release BT memory, as we need only BLE */ err = esp_bt_mem_release(ESP_BT_MODE_CLASSIC_BT); if (err != ESP_OK) { ESP_LOGE(TAG, "bt_mem_release of classic BT failed %d", err); } else { ESP_LOGI(TAG, "BT memory released"); } break; case WIFI_PROV_DEINIT: /* Release memory used by BLE and Bluedroid host stack */ err = esp_bt_mem_release(ESP_BT_MODE_BTDM); if (err != ESP_OK) { ESP_LOGE(TAG, "bt_mem_release of BTDM failed %d", err); } else { ESP_LOGI(TAG, "BTDM memory released"); } break; default: break; } } /* Used when BT is not needed by application */ void wifi_prov_scheme_ble_event_cb_free_bt(void *user_data, wifi_prov_cb_event_t event, void *event_data) { esp_err_t err; switch (event) { case WIFI_PROV_INIT: /* Release BT memory, as we need only BLE */ err = esp_bt_mem_release(ESP_BT_MODE_CLASSIC_BT); if (err != ESP_OK) { ESP_LOGE(TAG, "bt_mem_release of classic BT failed %d", err); } else { ESP_LOGI(TAG, "BT memory released"); } break; default: break; } } /* Used when BLE is not needed by application */ void wifi_prov_scheme_ble_event_cb_free_ble(void *user_data, wifi_prov_cb_event_t event, void *event_data) { esp_err_t err; switch (event) { case WIFI_PROV_DEINIT: /* Release memory used by BLE stack */ err = esp_bt_mem_release(ESP_BT_MODE_BLE); if (err != ESP_OK) { ESP_LOGE(TAG, "bt_mem_release of BLE failed %d", err); } else { ESP_LOGI(TAG, "BLE memory released"); } break; default: break; } } const wifi_prov_scheme_t wifi_prov_scheme_ble = { .prov_start = prov_start, .prov_stop = protocomm_ble_stop, .new_config = new_config, .delete_config = delete_config, .set_config_service = set_config_service, .set_config_endpoint = set_config_endpoint, .wifi_mode = WIFI_MODE_STA };