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/* $OpenBSD: netdb.h,v 1.33 2015/01/18 20:29:31 deraadt Exp $ */
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/*
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* ++Copyright++ 1980, 1983, 1988, 1993
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* -
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* Copyright (c) 1980, 1983, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be 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 REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* -
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* Portions Copyright (c) 1993 by Digital Equipment Corporation.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies, and that
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* the name of Digital Equipment Corporation not be used in advertising or
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* publicity pertaining to distribution of the document or software without
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* specific, written prior permission.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
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* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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* -
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* --Copyright--
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*/
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/*
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* Copyright (c) 1995, 1996, 1997, 1998, 1999 Craig Metz. All rights reserved.
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any contributors
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* may be 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 REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* @(#)netdb.h 8.1 (Berkeley) 6/2/93
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* $From: netdb.h,v 8.7 1996/05/09 05:59:09 vixie Exp $
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*/
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#ifndef _NETDB_H_
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#define _NETDB_H_
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#include <netinet/in.h>
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#ifndef _SOCKLEN_T_DEFINED_
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#define _SOCKLEN_T_DEFINED_
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typedef __socklen_t socklen_t; /* length type for network syscalls */
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#endif
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#define _PATH_HEQUIV "/etc/hosts.equiv"
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#define _PATH_HOSTS "/etc/hosts"
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#define _PATH_NETWORKS "/etc/networks"
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#define _PATH_PROTOCOLS "/etc/protocols"
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#define _PATH_SERVICES "/etc/services"
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/*
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* Structures returned by network data base library. All addresses are
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* supplied in host order, and returned in network order (suitable for
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* use in system calls).
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*/
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struct hostent {
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char *h_name; /* official name of host */
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char **h_aliases; /* alias list */
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int h_addrtype; /* host address type */
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int h_length; /* length of address */
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char **h_addr_list; /* list of addresses from name server */
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#define h_addr h_addr_list[0] /* address, for backward compatibility */
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};
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/*
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* Assumption here is that a network number
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* fits in an in_addr_t -- probably a poor one.
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*/
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struct netent {
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char *n_name; /* official name of net */
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char **n_aliases; /* alias list */
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int n_addrtype; /* net address type */
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in_addr_t n_net; /* network # */
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};
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struct servent {
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char *s_name; /* official service name */
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char **s_aliases; /* alias list */
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int s_port; /* port # */
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char *s_proto; /* protocol to use */
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};
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struct protoent {
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char *p_name; /* official protocol name */
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char **p_aliases; /* alias list */
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int p_proto; /* protocol # */
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};
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#if __BSD_VISIBLE || __POSIX_VISIBLE < 200809
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extern int h_errno;
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/*
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* Error return codes from gethostbyname() and gethostbyaddr()
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* (left in extern int h_errno).
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*/
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#define NETDB_INTERNAL -1 /* see errno */
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#define NETDB_SUCCESS 0 /* no problem */
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#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
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#define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */
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#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
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#define NO_DATA 4 /* Valid name, no data record of requested type */
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#define NO_ADDRESS NO_DATA /* no address */
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#endif /* __BSD_VISIBLE || __POSIX_VISIBLE < 200809 */
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/* Values for getaddrinfo() and getnameinfo() */
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#define AI_PASSIVE 1 /* socket address is intended for bind() */
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#define AI_CANONNAME 2 /* request for canonical name */
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#define AI_NUMERICHOST 4 /* don't ever try hostname lookup */
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#define AI_EXT 8 /* enable non-portable extensions */
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#define AI_NUMERICSERV 16 /* don't ever try servname lookup */
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#define AI_FQDN 32 /* return the FQDN that was resolved */
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#define AI_ADDRCONFIG 64 /* return configured address families only */
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/* valid flags for addrinfo */
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#define AI_MASK \
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(AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | AI_FQDN | \
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AI_ADDRCONFIG)
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#define NI_NUMERICHOST 1 /* return the host address, not the name */
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#define NI_NUMERICSERV 2 /* return the service address, not the name */
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#define NI_NOFQDN 4 /* return a short name if in the local domain */
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#define NI_NAMEREQD 8 /* fail if either host or service name is unknown */
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#define NI_DGRAM 16 /* look up datagram service instead of stream */
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/* #define NI_NUMERICSCOPE 32 return the scope number, not the name */
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#if __BSD_VISIBLE
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#define NI_MAXHOST 256 /* max host name from getnameinfo (MAXHOSTNAMELEN) */
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#define NI_MAXSERV 32 /* max serv. name length returned by getnameinfo */
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/*
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* Scope delimit character (KAME hack)
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*/
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#define SCOPE_DELIMITER '%'
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#endif
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#define EAI_BADFLAGS -1 /* invalid value for ai_flags */
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#define EAI_NONAME -2 /* name or service is not known */
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#define EAI_AGAIN -3 /* temporary failure in name resolution */
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#define EAI_FAIL -4 /* non-recoverable failure in name resolution */
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#define EAI_NODATA -5 /* no address associated with name */
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#define EAI_FAMILY -6 /* ai_family not supported */
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#define EAI_SOCKTYPE -7 /* ai_socktype not supported */
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#define EAI_SERVICE -8 /* service not supported for ai_socktype */
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#define EAI_ADDRFAMILY -9 /* address family for name not supported */
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#define EAI_MEMORY -10 /* memory allocation failure */
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#define EAI_SYSTEM -11 /* system error (code indicated in errno) */
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#define EAI_BADHINTS -12 /* invalid value for hints */
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#define EAI_PROTOCOL -13 /* resolved protocol is unknown */
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#define EAI_OVERFLOW -14 /* argument buffer overflow */
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struct addrinfo {
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int ai_flags; /* input flags */
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int ai_family; /* protocol family for socket */
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int ai_socktype; /* socket type */
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int ai_protocol; /* protocol for socket */
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socklen_t ai_addrlen; /* length of socket-address */
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struct sockaddr *ai_addr; /* socket-address for socket */
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char *ai_canonname; /* canonical name for service location (iff req) */
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struct addrinfo *ai_next; /* pointer to next in list */
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};
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#if __BSD_VISIBLE
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/*
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* Flags for getrrsetbyname()
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*/
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#define RRSET_VALIDATED 1
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/*
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* Return codes for getrrsetbyname()
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*/
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#define ERRSET_SUCCESS 0
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#define ERRSET_NOMEMORY 1
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#define ERRSET_FAIL 2
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#define ERRSET_INVAL 3
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#define ERRSET_NONAME 4
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#define ERRSET_NODATA 5
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/*
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* Structures used by getrrsetbyname() and freerrset()
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*/
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struct rdatainfo {
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unsigned int rdi_length; /* length of data */
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unsigned char *rdi_data; /* record data */
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};
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struct rrsetinfo {
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unsigned int rri_flags; /* RRSET_VALIDATED ... */
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unsigned int rri_rdclass; /* class number */
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unsigned int rri_rdtype; /* RR type number */
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unsigned int rri_ttl; /* time to live */
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unsigned int rri_nrdatas; /* size of rdatas array */
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unsigned int rri_nsigs; /* size of sigs array */
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char *rri_name; /* canonical name */
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struct rdatainfo *rri_rdatas; /* individual records */
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struct rdatainfo *rri_sigs; /* individual signatures */
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};
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struct servent_data {
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void *fp;
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char **aliases;
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int maxaliases;
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int stayopen;
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char *line;
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};
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struct protoent_data {
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void *fp;
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char **aliases;
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int maxaliases;
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int stayopen;
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char *line;
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};
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#endif
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__BEGIN_DECLS
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void endhostent(void);
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void endnetent(void);
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void endprotoent(void);
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void endservent(void);
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#if __BSD_VISIBLE || __POSIX_VISIBLE < 200809
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struct hostent *gethostbyaddr(const void *, socklen_t, int);
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struct hostent *gethostbyname(const char *);
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#endif
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#if __BSD_VISIBLE
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struct hostent *gethostbyname2(const char *, int);
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#endif
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struct hostent *gethostent(void);
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struct netent *getnetbyaddr(in_addr_t, int);
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struct netent *getnetbyname(const char *);
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struct netent *getnetent(void);
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struct protoent *getprotobyname(const char *);
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struct protoent *getprotobynumber(int);
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struct protoent *getprotoent(void);
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struct servent *getservbyname(const char *, const char *);
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struct servent *getservbyport(int, const char *);
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struct servent *getservent(void);
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#if __BSD_VISIBLE
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void herror(const char *);
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const char *hstrerror(int);
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#endif
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void sethostent(int);
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/* void sethostfile(const char *); */
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void setnetent(int);
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void setprotoent(int);
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void setservent(int);
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#if __BSD_VISIBLE
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void endprotoent_r(struct protoent_data *);
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void endservent_r(struct servent_data *);
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int getprotobyname_r(const char *, struct protoent *,
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struct protoent_data *);
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int getprotobynumber_r(int, struct protoent *,
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struct protoent_data *);
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int getservbyname_r(const char *, const char *, struct servent *,
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struct servent_data *);
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int getservbyport_r(int, const char *, struct servent *,
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struct servent_data *);
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int getservent_r(struct servent *, struct servent_data *);
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int getprotoent_r(struct protoent *, struct protoent_data *);
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void setprotoent_r(int, struct protoent_data *);
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void setservent_r(int, struct servent_data *);
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#endif
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int getaddrinfo(const char *, const char *,
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const struct addrinfo *, struct addrinfo **);
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void freeaddrinfo(struct addrinfo *);
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int getnameinfo(const struct sockaddr *, socklen_t,
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char *, size_t, char *, size_t, int);
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const char *gai_strerror(int);
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#if __BSD_VISIBLE
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int getrrsetbyname(const char *, unsigned int, unsigned int, unsigned int, struct rrsetinfo **);
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void freerrset(struct rrsetinfo *);
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#endif
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__END_DECLS
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#endif /* !_NETDB_H_ */
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