addr.h

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/*
 * Copyright (C) 2015 Martine Lenders <mlenders@inf.fu-berlin.de>
 *
 * 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 <stdbool.h>
#include <stdint.h>
#include <stddef.h>
 
#include "byteorder.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define IPV4_ADDR_MAX_STR_LEN       (sizeof("255.255.255.255"))
 
#define IPV4_ADDR_INIT(a, b, c, d) { .u8 = {a, b, c, d} }
 
#define IPV4_ADDR_LOOPBACK          IPV4_ADDR_INIT(127, 0, 0, 1)
 
typedef union {
    uint8_t u8[4];          
    network_uint32_t u32;   
} ipv4_addr_t;
 
static inline bool ipv4_addr_equal(const ipv4_addr_t *a, const ipv4_addr_t *b)
{
    return (a->u32.u32 == b->u32.u32);
}
 
static inline bool ipv4_addr_is_multicast(const ipv4_addr_t *addr)
{
    return (addr->u8[0] >= 0xE0 && addr->u8[0] <= 0xEF);
}
 
char *ipv4_addr_to_str(char *result, const ipv4_addr_t *addr, uint8_t result_len);
 
ipv4_addr_t *ipv4_addr_from_str(ipv4_addr_t *result, const char *addr);
 
ipv4_addr_t *ipv4_addr_from_buf(ipv4_addr_t *result, const char *addr,
                                size_t addr_len);
 
void ipv4_addr_print(const ipv4_addr_t *addr);
 
#ifdef __cplusplus
}
#endif