112 lines
3.6 KiB
C
112 lines
3.6 KiB
C
/****************************************************************************
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* libs/libc/netdb/lib_netdb.c
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*
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* Copyright (C) 2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 <netdb.h>
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#include "netdb/lib_netdb.h"
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#ifdef CONFIG_LIBC_NETDB
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/****************************************************************************
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* Public Data
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****************************************************************************/
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struct hostent g_hostent;
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char g_hostbuffer[CONFIG_NETDB_BUFSIZE];
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/* When the <netdb.h> header is included, h_errno shall be available as a
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* modifiable lvalue of type int. It is unspecified whether h_errno is a
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* macro or an identifier declared with external linkage.
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*/
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int h_errno;
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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bool convert_hostent(const FAR struct hostent_s *in,
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int type, FAR struct hostent *out)
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{
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int i;
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int j;
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/* Initialize the output of hostent */
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out->h_name = in->h_name;
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out->h_aliases = in->h_aliases;
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if (type != AF_UNSPEC)
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{
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out->h_addrtype = type;
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if (type == AF_INET)
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{
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out->h_length = sizeof(struct in_addr);
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}
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else
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{
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out->h_length = sizeof(struct in6_addr);
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}
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}
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else
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{
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type = in->h_addrtypes[0];
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out->h_addrtype = in->h_addrtypes[0];
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out->h_length = in->h_lengths[0];
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}
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out->h_addr_list = in->h_addr_list;
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/* Remove different type from list */
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for (i = j = 0; in->h_addr_list[i]; i++)
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{
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if (type == in->h_addrtypes[i])
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{
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in->h_addr_list[j++] = in->h_addr_list[i];
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}
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}
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in->h_addr_list[j] = NULL;
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return j != 0;
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}
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#endif /* CONFIG_LIBC_NETDB */
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