cache.h

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/*
 * Copyright (C) 2022 ML!PA Consulting GmbH
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#include <stdint.h>
 
#include "modules.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#ifndef CONFIG_DNS_CACHE_SIZE
#define CONFIG_DNS_CACHE_SIZE   4
#endif

#ifndef CONFIG_DNS_CACHE_A
#define CONFIG_DNS_CACHE_A      IS_USED(MODULE_IPV4)
#endif

#ifndef CONFIG_DNS_CACHE_AAAA
#define CONFIG_DNS_CACHE_AAAA   IS_USED(MODULE_IPV6)
#endif
 
#if IS_USED(MODULE_DNS_CACHE) || DOXYGEN
int dns_cache_query(const char *domain_name, void *addr_out, int family);

void dns_cache_add(const char *domain_name, const void *addr, int addr_len, uint32_t ttl);
#else
static inline int dns_cache_query(const char *domain_name, void *addr_out, int family)
{
    (void)domain_name;
    (void)addr_out;
    (void)family;
    return 0;
}
 
static inline void dns_cache_add(const char *domain_name, const void *addr,
                                 int addr_len, uint32_t ttl)
{
    (void)domain_name;
    (void)addr;
    (void)addr_len;
    (void)ttl;
}
#endif
 
#ifdef __cplusplus
}
#endif