Enable logs reporting

esp32_device/main/main.c

@@ -171,6 +171,7 @@ void app_main(void)
 
     // Main loop
     ESP_LOGI(TAG, "Starting main loop");
+    secure_api_report_log_message(Info, "Starting program main loop");
 
     size_t fails = 0;
     while (true)

esp32_device/main/secure_api.c

@@ -196,6 +196,77 @@ char *secure_api_get_dev_certificate()
     return res;
 }
 
+void secure_api_report_log_message(enum LogMessageSeverity severity, const char *msg)
+{
+    // Prepare signed payload
+    cJSON *obj = cJSON_CreateObject();
+    if (!obj)
+    {
+        ESP_LOGE(TAG, "Failed allocate memory to store JSON object!");
+        return;
+    }
+
+    char *severity_s;
+    switch (severity)
+    {
+    case Info:
+        severity_s = "Info";
+        break;
+    case Warn:
+        severity_s = "Warn";
+        break;
+    case Error:
+        severity_s = "Error";
+        break;
+    default:
+        severity_s = "Debug";
+        break;
+    }
+
+    cJSON_AddStringToObject(obj, "severity", severity_s);
+    cJSON_AddStringToObject(obj, "message", msg);
+    char *payload = jwt_gen(obj);
+    cJSON_Delete(obj);
+
+    if (!payload)
+    {
+        ESP_LOGE(TAG, "Failed to build log report request!");
+        return;
+    }
+
+    // Prepare request body
+    cJSON *json_body = cJSON_CreateObject();
+    if (!json_body)
+    {
+        ESP_LOGE(TAG, "Failed to allocated memory to store log report request body!");
+        free(payload);
+        return;
+    }
+    cJSON_AddStringToObject(json_body, "payload", payload);
+    free(payload);
+
+    char *body = cJSON_PrintUnformatted(json_body);
+    cJSON_Delete(json_body);
+
+    if (!body)
+    {
+        ESP_LOGE(TAG, "Failed to allocated memory to store encoded log report request body!");
+        return;
+    }
+
+    // Send request
+    char *res = process_secure_request("/devices_api/logging/record", body);
+
+    free(body);
+
+    if (!res)
+    {
+        ESP_LOGE(TAG, "Log reporting failed!");
+    }
+
+    free(res);
+}
+
 sync_response *secure_api_sync_device()
 {
     cJSON *obj = cJSON_CreateObject();

esp32_device/main/secure_api.h

@@ -29,6 +29,17 @@ extern "C"
         DevEnrollValidated = 3,
     };
 
+    /**
+     * Log message severity
+     */
+    enum LogMessageSeverity
+    {
+        Debug = 0,
+        Info,
+        Warn,
+        Error
+    };
+
     /**
      * Get current device enrollment status
      */
@@ -45,6 +56,11 @@ extern "C"
      */
     char *secure_api_get_dev_certificate();
 
+    /**
+     * Report log message to backend
+     */
+    void secure_api_report_log_message(enum LogMessageSeverity severity, const char *msg);
+
     /**
      * Synchronise device with central backend
      *