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/*
* Replacement implementation of getnameinfo.
*
* This is an implementation of the getnameinfo function for systems that lack
* it, so that code can use getnameinfo always. It provides IPv4 support
* only; for IPv6 support, a native getnameinfo implementation is required.
*
* This file should generally be included by way of portable/socket.h rather
* than directly.
*
* The canonical version of this file is maintained in the rra-c-util package,
* which can be found at <https://www.eyrie.org/~eagle/software/rra-c-util/>.
*
* Written by Russ Allbery <eagle@eyrie.org>
* Copyright 2005, 2007, 2020 Russ Allbery <eagle@eyrie.org>
* Copyright 2008, 2010-2011
* The Board of Trustees of the Leland Stanford Junior University
*
* Copying and distribution of this file, with or without modification, are
* permitted in any medium without royalty provided the copyright notice and
* this notice are preserved. This file is offered as-is, without any
* warranty.
*
* SPDX-License-Identifier: FSFAP
*/
#ifndef PORTABLE_GETNAMEINFO_H
#define PORTABLE_GETNAMEINFO_H 1
#include <config.h>
#include <portable/macros.h>
/* Skip this entire file if a system getaddrinfo was detected. */
#if !HAVE_GETNAMEINFO
/* OpenBSD likes to have sys/types.h included before sys/socket.h. */
/* clang-format off */
# include <sys/types.h>
# include <sys/socket.h>
/* clang-format on */
/* Constants for flags from RFC 3493, combined with binary or. */
# define NI_NOFQDN 0x0001
# define NI_NUMERICHOST 0x0002
# define NI_NAMEREQD 0x0004
# define NI_NUMERICSERV 0x0008
# define NI_DGRAM 0x0010
/*
* Maximum length of hostnames and service names. Our implementation doesn't
* use these values, so they're taken from Linux. They're provided just for
* code that uses them to size buffers.
*/
# ifndef NI_MAXHOST
# define NI_MAXHOST 1025
# endif
# ifndef NI_MAXSERV
# define NI_MAXSERV 32
# endif
BEGIN_DECLS
/* Default to a hidden visibility for all portability functions. */
# pragma GCC visibility push(hidden)
/* Function prototypes. */
int getnameinfo(const struct sockaddr *sa, socklen_t salen, char *node,
socklen_t nodelen, char *service, socklen_t servicelen,
int flags);
/* Undo default visibility change. */
# pragma GCC visibility pop
END_DECLS
#endif /* !HAVE_GETNAMEINFO */
#endif /* !PORTABLE_GETNAMEINFO_H */
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