nuttx/include/arpa/inet.h

/****************************************************************************
 * include/arpa/inet.h
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 ****************************************************************************/

#ifndef __INCLUDE_ARPA_INET_H
#define __INCLUDE_ARPA_INET_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <sys/types.h>
#include <stdint.h>
#include <netinet/in.h>

/****************************************************************************
 * Public Type Definitions
 ****************************************************************************/

/* This macro to convert a 16/32-bit constant values quantity from host byte
 * order to network byte order.  The 16-bit version of this macro is required
 * for uIP:
 *
 *   Author Adam Dunkels <adam@dunkels.com>
 *   Copyright (c) 2001-2003, Adam Dunkels.
 *   All rights reserved.
 */

#ifdef CONFIG_ENDIAN_BIG
# define HTONS(ns) (ns)
# define HTONL(nl) (nl)
#else
# define HTONS(ns) \
  (unsigned short) \
    (((((unsigned short)(ns)) & 0x00ff) << 8) | \
     ((((unsigned short)(ns)) >> 8) & 0x00ff))
# define HTONL(nl) \
  (unsigned long) \
    (((((unsigned long)(nl)) & 0x000000ffUL) << 24) | \
     ((((unsigned long)(nl)) & 0x0000ff00UL) <<  8) | \
     ((((unsigned long)(nl)) & 0x00ff0000UL) >>  8) | \
     ((((unsigned long)(nl)) & 0xff000000UL) >> 24))
#endif

#define NTOHS(hs) HTONS(hs)
#define NTOHL(hl) HTONL(hl)

/****************************************************************************
 * Public Function Prototypes
 ****************************************************************************/

#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif

/* Functions to convert between host and network byte ordering.
 *
 * REVISIT:  Since network order is defined as big-endian, the following
 * functions are equivalent to functions declared in endian.h:
 *
 *   htonl   htobe32
 *   htons   htobe16
 *   ntohl   be32toh
 *   ntohs   be16toh
 */

uint32_t    ntohl(uint32_t nl);
uint16_t    ntohs(uint16_t ns);
uint32_t    htonl(uint32_t hl);
uint16_t    htons(uint16_t hs);

/* Functions to manipulate address representations */

int         inet_aton(FAR const char *cp, FAR struct in_addr *inp);
in_addr_t   inet_addr(FAR const char *cp);
in_addr_t   inet_network(FAR const char *cp);

FAR char   *inet_ntoa(struct in_addr in);
in_addr_t   inet_lnaof(struct in_addr in);
in_addr_t   inet_netof(struct in_addr in);

struct in_addr inet_makeaddr(in_addr_t net, in_addr_t host);

int         inet_pton(int af, FAR const char *src, FAR void *dst);
const char *inet_ntop(int af, FAR const void *src, FAR char *dst,
                      socklen_t size);

#undef EXTERN
#ifdef __cplusplus
}
#endif

#endif /* __INCLUDE_ARPA_INET_H */