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/* Copyright (C) 1997, 1999, 2000, 2001 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, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

#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;

/* 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 */