esp-firewall/SourceCode/arduino/lib/Firewall/Firewall.h

#ifndef FIREWALL_H
#define FIREWALL_H

#include "WebServer.h"
#include "cJSON.h"
#include "esp32-hal-log.h"

typedef struct firewall_rule
{
    int key;
    char source[IP4ADDR_STRLEN_MAX];
    char destination[IP4ADDR_STRLEN_MAX];
    char protocol[4];
    char target[7];
    struct firewall_rule *next;
} firewall_rule_t;

class ESPFirewall
{
    WebServer *firewall_api;
    int amount_of_rules;
    struct firewall_rule *head;

    void setup_routing();
    void custom_message_response(const char *message, int response_code);
    void prepare_firewall_json(cJSON *jsonResponse, firewall_rule_t *link);
    firewall_rule_t *add_rule_to_firewall(const char *source, const char *destination, const char *protocol, const char *target);
    void post_firewall_handler();
    void get_firewall_handler();

public:
    ESPFirewall(int port = 8080);

    void handle_clients();
};

#endif