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/*
* Copyright (C) 2013-15 Freie Universitรคt Berlin
*
* 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.
*/
/**
* @addtogroup posix_sockets
* @{
*/
/**
* @file
* @brief Definitions for internet operations
* @see <a href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/arpa_inet.h.html">
* The Open Group Base Specifications Issue 7, <arpa/inet.h>
* </a>
*
* @author Martine Lenders <mlenders@inf.fu-berlin.de>
*/
#ifndef ARPA_INET_H
#define ARPA_INET_H
#include <errno.h>
#include <inttypes.h>
#include <stdio.h>
#include "byteorder.h"
#include "net/af.h"
#include "net/ipv4/addr.h"
#include "net/ipv6/addr.h"
#include "sys/bytes.h"
#include "netinet/in.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Size in byte of an IPv4 address
*/
#ifndef INADDRSZ
#define INADDRSZ (sizeof(ipv4_addr_t))
#endif
/**
* @brief Size in byte of an IPv6 address
*/
#ifndef IN6ADDRSZ
#define IN6ADDRSZ (sizeof(ipv6_addr_t))
#endif
/**
* @brief Converts an IP address to its string representation
*
* @pre (af == AF_INET) || (af == AF_INET6)
*
* @param[in] af Address family of @p src. Must be @ref AF_INET or @ref AF_INET6.
* @param[in] src An IP address.
* @param[out] dst The resulting string representation.
* @param[in] size Length of @p result.
*
* @return @p dst, on success
* @return NULL, if @p size was smaller than needed
* @return NULL, if @p src or @p dst was NULL
*/
static inline const char *inet_ntop(int af, const void *restrict src, char *restrict dst,
socklen_t size)
{
switch (af) {
#ifdef MODULE_IPV4_ADDR
case AF_INET:
if (ipv4_addr_to_str(dst, src, (size_t)size) == NULL) {
errno = ENOSPC;
return NULL;
}
break;
#endif
#ifdef MODULE_IPV6_ADDR
case AF_INET6:
if (ipv6_addr_to_str(dst, src, (size_t)size) == NULL) {
errno = ENOSPC;
return NULL;
}
break;
#endif
default:
(void)src;
(void)dst;
(void)size;
errno = EAFNOSUPPORT;
return NULL;
}
return dst;
}
/**
* @brief Converts an IP address string representation to a byte-represented
* IP address
*
* @pre (af == AF_INET) || (af == AF_INET6)
*
* @param[in] af Address family of @p src. Must be @ref AF_INET or @ref AF_INET6.
* @param[in] src An IP address string representation
* @param[out] dst The resulting byte representation
*
* @return 1, on success.
* @return 0, if @p src was malformed or input pointers were NULL.
* @return -1, if @p af is not supported.
*/
static inline int inet_pton(int af, const char *src, void *dst)
{
switch (af) {
#ifdef MODULE_IPV4_ADDR
case AF_INET:
if (ipv4_addr_from_str(dst, src) == NULL) {
return 0;
}
break;
#endif
#ifdef MODULE_IPV6_ADDR
case AF_INET6:
if (ipv6_addr_from_str(dst, src) == NULL) {
return 0;
}
break;
#endif
default:
(void)src;
(void)dst;
errno = EAFNOSUPPORT;
return -1;
}
return 1;
}
#ifdef __cplusplus
}
#endif
/**
* @}
*/
#endif /* ARPA_INET_H */
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