SolarEnergy/esp32_device/main/main.c

#include <stdio.h>
#include "esp_system.h"
#include "esp_log.h"

#include "dev_name.h"
#include "storage.h"
#include "system.h"
#include "crypto.h"
#include "unsecure_api.h"
#include "secure_api.h"
#include "ethernet.h"
#include "constants.h"

static const char *TAG = "main";

void app_main(void)
{
    esp_log_level_set("*", ESP_LOG_VERBOSE);

    ESP_LOGI(TAG, "SolarEnergy WT32-ETH01 device");

    // Initialize storage
    if (storage_init() == false)
    {
        ESP_LOGE(TAG, "Failed to init storage!\n");
        reboot();
    }

    // Give a name to the device
    if (dev_generate_name())
    {
        ESP_LOGI(TAG, "Generated a new device name\n");
    }

    char *name = dev_name();
    ESP_LOGI(TAG, "Dev name: %s\n", name);
    free(name);

    // Generate private key, if needed
    if (crypto_gen_priv_key())
    {
        ESP_LOGI(TAG, "Generated device private key!\n");
    }
    ESP_LOGI(TAG, "Device private key:\n");
    crypto_print_priv_key();

    // Show current private key
    char *csr = crypto_get_csr();
    ESP_LOGI(TAG, "Current CSR:\n%s\n", csr);
    free(csr);

    // Initialize network stack
    ESP_LOGI(TAG, "Initialize network\n");
    ethernet_init();
    ethernet_wait_for_network();

    // Get if secure origin endpoint is known
    ESP_LOGI(TAG, "Check secure origin\n");
    if (storage_get_secure_origin(NULL) == 0)
    {
        char *sec_ori = unsecure_api_get_secure_origin();
        if (!sec_ori)
        {
            ESP_LOGE(TAG, "Failed to fetch secure origin!");
            reboot();
        }
        storage_set_secure_origin(sec_ori);
        free(sec_ori);
    }

    // Print secure origin endpoint for debugging purposes
    ESP_LOGI(TAG, "Get secure origin\n");
    char *sec_ori = calloc(SEC_ORIG_LEN, 1);
    assert(storage_get_secure_origin(sec_ori) > 0);
    ESP_LOGI(TAG, "Current secure origin: %s", sec_ori);
    free(sec_ori);

    // Check if root CA is available locally
    ESP_LOGI(TAG, "Check root CA");
    if (storage_get_root_ca(NULL) == 0)
    {
        char *root_ca = unsecure_api_get_root_ca();
        if (!root_ca)
        {
            ESP_LOGE(TAG, "Failed to fetch root CA!");
            reboot();
        }
        storage_set_root_ca(root_ca);
        free(root_ca);
    }

    // Print root CA for debugging purposes
    ESP_LOGI(TAG, "Get root CA");
    char *root_ca = calloc(ROOT_CA_MAX_BYTES, 1);
    assert(storage_get_root_ca(root_ca) > 0);
    ESP_LOGI(TAG, "Current root CA:\n%s", root_ca);
    free(root_ca);

    // Check current device enrollment status
    ESP_LOGI(TAG, "Check enrollment status");
    int status = secure_api_get_device_enrollment_status();
    printf("Current enrollment status: %d\n", status);

    system_sleep(120);

    reboot();
}