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/* Copyright (C) 1997-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _ARPA_INET_H
#define _ARPA_INET_H 1
#include <features.h>
#include <netinet/in.h> /* To define `struct in_addr'. */
/* Type for length arguments in socket calls. */
#ifndef __socklen_t_defined
typedef __socklen_t socklen_t;
# define __socklen_t_defined
#endif
__BEGIN_DECLS
/* Convert Internet host address from numbers-and-dots notation in CP
into binary data in network byte order. */
extern in_addr_t inet_addr (const char *__cp) __THROW;
/* Return the local host address part of the Internet address in IN. */
extern in_addr_t inet_lnaof (struct in_addr __in) __THROW;
/* Make Internet host address in network byte order by combining the
network number NET with the local address HOST. */
extern struct in_addr inet_makeaddr (in_addr_t __net, in_addr_t __host)
__THROW;
/* Return network number part of the Internet address IN. */
extern in_addr_t inet_netof (struct in_addr __in) __THROW;
/* Extract the network number in network byte order from the address
in numbers-and-dots natation starting at CP. */
extern in_addr_t inet_network (const char *__cp) __THROW;
/* Convert Internet number in IN to ASCII representation. The return value
is a pointer to an internal array containing the string. */
extern char *inet_ntoa (struct in_addr __in) __THROW;
/* Convert from presentation format of an Internet number in buffer
starting at CP to the binary network format and store result for
interface type AF in buffer starting at BUF. */
extern int inet_pton (int __af, const char *__restrict __cp,
void *__restrict __buf) __THROW;
/* Convert a Internet address in binary network format for interface
type AF in buffer starting at CP to presentation form and place
result in buffer of length LEN astarting at BUF. */
extern const char *inet_ntop (int __af, const void *__restrict __cp,
char *__restrict __buf, socklen_t __len)
__THROW;
/* The following functions are not part of XNS 5.2. */
#ifdef __USE_MISC
/* Convert Internet host address from numbers-and-dots notation in CP
into binary data and store the result in the structure INP. */
extern int inet_aton (const char *__cp, struct in_addr *__inp) __THROW;
/* Format a network number NET into presentation format and place result
in buffer starting at BUF with length of LEN bytes. */
extern char *inet_neta (in_addr_t __net, char *__buf, size_t __len) __THROW
__attribute_deprecated_msg__ ("Use inet_ntop instead");
/* Convert network number for interface type AF in buffer starting at
CP to presentation format. The result will specifiy BITS bits of
the number. */
extern char *inet_net_ntop (int __af, const void *__cp, int __bits,
char *__buf, size_t __len) __THROW;
/* Convert network number for interface type AF from presentation in
buffer starting at CP to network format and store result int
buffer starting at BUF of size LEN. */
extern int inet_net_pton (int __af, const char *__cp,
void *__buf, size_t __len) __THROW;
/* Convert ASCII representation in hexadecimal form of the Internet
address to binary form and place result in buffer of length LEN
starting at BUF. */
extern unsigned int inet_nsap_addr (const char *__cp,
unsigned char *__buf, int __len) __THROW;
/* Convert internet address in binary form in LEN bytes starting at CP
a presentation form and place result in BUF. */
extern char *inet_nsap_ntoa (int __len, const unsigned char *__cp,
char *__buf) __THROW;
#endif
__END_DECLS
#endif /* arpa/inet.h */
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