esp-firewall/ESPFirewall/lib/Firewall/src/Utils.hpp

#ifndef UTILS_HPP
#define UTILS_HPP

#include "Arduino.h"
#include "WString.h"

namespace firewall
{
    static const uint8_t IPV4ADDRESS_LENGTH = 16;
    static const uint8_t CREDENTIALS_LENGTH = 32;

    typedef enum firewall_targets : uint8_t
    {
        TARGET_REJECT = 0,
        TARGET_DROP = 1,
        TARGET_ACCEPT = 2,
    } firewall_target_t;

    typedef enum firewall_protocols : uint8_t
    {
        PROTOCOL_TCP = 0,
        PROTOCOL_UDP = 1,
        PROTOCOL_ALL = 255,
    } firewall_protocol_t;

    typedef enum ok : uint8_t
    {
        SUCCESS = 0,
        ERROR = 1,
        NO_ACTION = 2,
    } ok_t;

    typedef enum auth : uint8_t
    {
        AUTHENTICATED = 0,
        DENIED = 1,
    } auth_t;

    typedef struct firewall_rules
    {
        uint8_t key;
        char source[IPV4ADDRESS_LENGTH];
        char destination[IPV4ADDRESS_LENGTH];
        firewall_protocol_t protocol;
        firewall_target_t target;
        struct firewall_rules *next;
    } firewall_rule_t;

    typedef struct credentials
    {
        char password[CREDENTIALS_LENGTH];
        char username[CREDENTIALS_LENGTH];
    } credential_t;

    String protocol_to_string(firewall_protocol_t &protocol);
    firewall_protocol_t string_to_protocol(String &protocol);
    String target_to_string(firewall_target_t &target);
    firewall_target_t string_to_target(String &target);
    void endless_loop();
}

#endif