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inet.h
/* Copyright (C) 1997-2021 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 #if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function /* Include functions with security checks. */ # include <bits/inet-fortified.h> #endif __END_DECLS #endif /* arpa/inet.h */
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