73 lines
2.7 KiB
C
73 lines
2.7 KiB
C
/****************************************************************************
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* libs/libc/net/lib_inetntoa.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#if defined(CONFIG_NET_IPv4) || defined(CONFIG_LIBC_IPv4_ADDRCONV)
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: inet_ntoa_r
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*
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* Description:
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* The inet_ntoa_r() function converts the Internet host address given in
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* network byte order to a string in standard numbers-and-dots notation.
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*
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****************************************************************************/
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FAR char *inet_ntoa_r(struct in_addr in, FAR char *buf, size_t bufflen)
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{
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FAR unsigned char *ptr = (FAR unsigned char *)&in.s_addr;
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snprintf(buf, bufflen, "%u.%u.%u.%u",
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ptr[0], ptr[1], ptr[2], ptr[3]);
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return buf;
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}
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/****************************************************************************
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* Name: inet_ntoa
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*
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* Description:
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* The inet_ntoa() function converts the Internet host address given in
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* network byte order to a string in standard numbers-and-dots notation.
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* The string is returned in a statically allocated buffer, which
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* subsequent calls will overwrite.
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*
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****************************************************************************/
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FAR char *inet_ntoa(struct in_addr in)
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{
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static char buffer[INET_ADDRSTRLEN];
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return inet_ntoa_r(in, buffer, sizeof(buffer));
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}
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#endif /* CONFIG_NET_IPv4 || CONFIG_LIBC_IPv4_ADDRCONV */
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