esp-firewall/SourceCode/arduino/lib/Firewall/esp32Storage.cpp

#include "esp32Storage.hpp"

namespace firewall
{
    Storage::Storage()
    {
        store_settings_value("amount_of_rules", 21);
        log_i("Amount: %i", retrieve_settings_value("amount_of_rules"));

        firewall_rule_t *rule_ptr = (firewall_rule_t *)malloc(sizeof(firewall_rule_t));
        rule_ptr->key = 0;
        strcpy(rule_ptr->source, "192.168.0.12");
        strcpy(rule_ptr->destination, "192.168.0.12");
        rule_ptr->protocol = FW_TCP;
        rule_ptr->target = FW_DROP;
        store_firewall_rule(rule_ptr);
        free(rule_ptr);
        rule_ptr = retrieve_firewall_rule(0);
        log_i("%s, %s, %i, %i",
              rule_ptr->source,
              rule_ptr->destination,
              rule_ptr->protocol,
              rule_ptr->target);
        free(rule_ptr);
        rule_ptr = retrieve_firewall_rule(1);
        log_i("%s, %s, %i, %i",
              rule_ptr->source,
              rule_ptr->destination,
              rule_ptr->protocol,
              rule_ptr->target);
        free(rule_ptr);
    }

    Storage::~Storage()
    {
    }

    uint8_t Storage::retrieve_settings_value(const char *key)
    {
        uint8_t amount_of_rules;

        this->memory.begin("settings", true);
        amount_of_rules = memory.getUChar(key, 0);
        this->memory.end();

        return amount_of_rules;
    }

    void Storage::store_settings_value(const char *key, const uint8_t new_amount)
    {
        this->memory.begin("settings", false);
        this->memory.putUChar(key, new_amount);
        this->memory.end();
    }

    firewall_rule_t *Storage::retrieve_firewall_rule(const uint8_t key)
    {
        firewall_rule_t *rule_ptr = (firewall_rule_t *)malloc(sizeof(firewall_rule_t));
        rule_ptr->key = key;

        char rulename[9]; // fwRule99\n
        sprintf(rulename, "fwRule%i", key);

        this->memory.begin(rulename, true);
        strcpy(rule_ptr->source, this->memory.getString("source", "0.0.0.0").c_str());
        strcpy(rule_ptr->destination, this->memory.getString("destination", "0.0.0.0").c_str());
        rule_ptr->protocol = static_cast<firewall_protocol_t>(this->memory.getUChar("protocol", FW_ALL));
        rule_ptr->target = static_cast<firewall_target_t>(this->memory.getUChar("target", FW_REJECT));
        this->memory.end();

        return rule_ptr;
    }

    void Storage::store_firewall_rule(firewall_rule_t *rule_ptr)
    {
        char rulename[9]; // fwRule99\n
        sprintf(rulename, "fwRule%i", rule_ptr->key);

        this->memory.begin(rulename, false);
        this->memory.putString("source", rule_ptr->source);
        this->memory.putString("destination", rule_ptr->destination);
        this->memory.putUChar("protocol", rule_ptr->protocol);
        this->memory.putUChar("target", rule_ptr->target);
        this->memory.end();
    }

    httpsserver::SSLCert *Storage::retrieve_certificate()
    {
        this->memory.begin("certificate", true);
        uint16_t cert_data_length = this->memory.getBytesLength("cert_data");
        unsigned char cert_data[cert_data_length];
        this->memory.getBytes("cert_data", cert_data, cert_data_length);

        uint16_t pk_data_length = this->memory.getBytesLength("pk_data");
        unsigned char pk_data[pk_data_length];
        this->memory.getBytes("pk_data", pk_data, pk_data_length);

        uint16_t pk_length = this->memory.getUInt("pk_length", 0);

        uint16_t cert_length = this->memory.getUInt("pk_length", 0);
        this->memory.end();

        return new httpsserver::SSLCert(cert_data, cert_length, pk_data, pk_length);
    }

    void Storage::store_certificate(httpsserver::SSLCert *certificate)
    {
        unsigned char *pk_data = certificate->getPKData();
        unsigned char *cert_data = certificate->getCertData();
        uint16_t pk_length = certificate->getPKLength();
        uint16_t cert_length = certificate->getCertLength();

        this->memory.begin("certificate", false);
        this->memory.putBytes("pk_data", pk_data, pk_length);
        this->memory.putBytes("cert_data", cert_data, cert_length);
        this->memory.putUInt("pk_length", pk_length);
        this->memory.putUInt("pk_length", cert_length);
        this->memory.end();
    }
}