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/*
* SPDX-FileCopyrightText: 2019-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <string.h>
#include <esp_log.h>
#include <esp_err.h>
#ifdef CONFIG_BT_CONTROLLER_ENABLED
#include "esp_bt.h"
#endif
#include <protocomm.h>
#include <protocomm_ble.h>
#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_ble_addr;
static uint8_t custom_keep_ble_on;
static uint8_t *custom_manufacturer_data;
static size_t custom_manufacturer_data_len;
esp_err_t wifi_prov_mgr_keep_ble_on(uint8_t is_on_after_ble_stop)
{
if (!is_on_after_ble_stop) {
return ESP_ERR_INVALID_ARG;
}
custom_keep_ble_on = is_on_after_ble_stop;
return ESP_OK;
}
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;
ble_config->keep_ble_on = custom_keep_ble_on;
#if defined(CONFIG_WIFI_PROV_BLE_BONDING)
ble_config->ble_bonding = 1;
#endif
#if defined(CONFIG_WIFI_PROV_BLE_SEC_CONN) || defined(CONFIG_BT_BLUEDROID_ENABLED)
ble_config->ble_sm_sc = 1;
#endif
#if defined(CONFIG_WIFI_PROV_BLE_FORCE_ENCRYPTION)
ble_config->ble_link_encryption = 1;
#endif
#if defined(CONFIG_WIFI_PROV_BLE_NOTIFY)
ble_config->ble_notify = 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_random_addr(const uint8_t *addr)
{
if (!addr) {
return ESP_ERR_INVALID_ARG;
}
custom_ble_addr = (uint8_t *) malloc(BLE_ADDR_LEN);
if (custom_ble_addr == NULL) {
ESP_LOGE(TAG, "Error allocating memory for random address");
return ESP_ERR_NO_MEM;
}
memcpy(custom_ble_addr, addr, BLE_ADDR_LEN);
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;
}
if (custom_ble_addr){
ble_config->ble_addr = custom_ble_addr;
} else {
ble_config->ble_addr = NULL;
}
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");
free(copy_ep_name);
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)
{
switch (event) {
case WIFI_PROV_INIT: {
#ifdef CONFIG_BT_CONTROLLER_ENABLED
/* Release BT memory, as we need only BLE */
esp_err_t 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");
}
#endif
break;
}
case WIFI_PROV_DEINIT: {
#ifndef CONFIG_WIFI_PROV_KEEP_BLE_ON_AFTER_PROV
#ifdef CONFIG_BT_CONTROLLER_ENABLED
/* Release memory used by BLE and Bluedroid host stack */
esp_err_t 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");
}
#endif
#endif
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)
{
switch (event) {
case WIFI_PROV_INIT: {
#ifdef CONFIG_BT_CONTROLLER_ENABLED
esp_err_t err;
/* 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");
}
#endif
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)
{
switch (event) {
case WIFI_PROV_DEINIT: {
#ifndef CONFIG_WIFI_PROV_KEEP_BLE_ON_AFTER_PROV
#ifdef CONFIG_BT_CONTROLLER_ENABLED
esp_err_t err;
/* 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");
}
#endif
#endif
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
};
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