/* $NetBSD: netdb.h,v 1.53 2006/02/17 15:55:01 ginsbach Exp $ */ /* * Copyright (c) 1980, 1983, 1988, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * Portions Copyright (c) 1993 by Digital Equipment Corporation. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies, and that * the name of Digital Equipment Corporation not be used in advertising or * publicity pertaining to distribution of the document or software without * specific, written prior permission. * * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. * - * Portions Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by WIDE Project and * its contributors. * 4. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * --Copyright-- */ /* * @(#)netdb.h 8.1 (Berkeley) 6/2/93 * Id: netdb.h,v 1.12.2.1.4.4 2004/03/16 02:19:19 marka Exp */ #ifndef _NETDB_H_ #define _NETDB_H_ #include #include #include #include #include #include /* * Data types */ #ifndef socklen_t typedef __socklen_t socklen_t; #define socklen_t __socklen_t #endif #ifdef _BSD_SIZE_T_ typedef _BSD_SIZE_T_ size_t; #undef _BSD_SIZE_T_ #endif #if defined(_NETBSD_SOURCE) #ifndef _PATH_HEQUIV #define _PATH_HEQUIV "/etc/hosts.equiv" #endif #ifndef _PATH_HOSTS #define _PATH_HOSTS "/etc/hosts" #endif #ifndef _PATH_NETWORKS #define _PATH_NETWORKS "/etc/networks" #endif #ifndef _PATH_PROTOCOLS #define _PATH_PROTOCOLS "/etc/protocols" #endif #ifndef _PATH_SERVICES #define _PATH_SERVICES "/etc/services" #endif #endif __BEGIN_DECLS extern int h_errno; __END_DECLS /* * Structures returned by network data base library. All addresses are * supplied in host order, and returned in network order (suitable for * use in system calls). */ struct hostent { char *h_name; /* official name of host */ char **h_aliases; /* alias list */ int h_addrtype; /* host address type */ int h_length; /* length of address */ char **h_addr_list; /* list of addresses from name server */ #define h_addr h_addr_list[0] /* address, for backward compatibility */ }; /* * Assumption here is that a network number * fits in an unsigned long -- probably a poor one. */ struct netent { char *n_name; /* official name of net */ char **n_aliases; /* alias list */ int n_addrtype; /* net address type */ #if (defined(__sparc__) && defined(_LP64)) || \ (defined(__sh__) && defined(_LP64) && (_BYTE_ORDER == _BIG_ENDIAN)) int __n_pad0; /* ABI compatibility */ #endif uint32_t n_net; /* network # */ #if defined(__alpha__) || (defined(__i386__) && defined(_LP64)) || \ (defined(__sh__) && defined(_LP64) && (_BYTE_ORDER == _LITTLE_ENDIAN)) int __n_pad0; /* ABI compatibility */ #endif }; struct servent { char *s_name; /* official service name */ char **s_aliases; /* alias list */ int s_port; /* port # */ char *s_proto; /* protocol to use */ }; struct protoent { char *p_name; /* official protocol name */ char **p_aliases; /* alias list */ int p_proto; /* protocol # */ }; /* * Note: ai_addrlen used to be a size_t, per RFC 2553. * In XNS5.2, and subsequently in POSIX-2001 and * draft-ietf-ipngwg-rfc2553bis-02.txt it was changed to a socklen_t. * To accomodate for this while preserving binary compatibility with the * old interface, we prepend or append 32 bits of padding, depending on * the (LP64) architecture's endianness. * * This should be deleted the next time the libc major number is * incremented. */ #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ defined(_NETBSD_SOURCE) struct addrinfo { int ai_flags; /* AI_xxx */ int ai_family; /* PF_xxx */ int ai_socktype; /* SOCK_xxx */ int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ #if defined(__sparc__) && defined(_LP64) int __ai_pad0; /* ABI compatibility */ #endif socklen_t ai_addrlen; /* length of ai_addr */ #if defined(__alpha__) || (defined(__i386__) && defined(_LP64)) int __ai_pad0; /* ABI compatbility */ #endif char *ai_canonname; /* canonical name for hostname */ struct sockaddr *ai_addr; /* binary address */ struct addrinfo *ai_next; /* next structure in linked list */ }; #endif /* * Error return codes from gethostbyname() and gethostbyaddr() * (left in extern int h_errno). */ #if defined(_NETBSD_SOURCE) #define NETDB_INTERNAL -1 /* see errno */ #define NETDB_SUCCESS 0 /* no problem */ #endif #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ #define TRY_AGAIN 2 /* Non-Authoritative Host not found, or SERVERFAIL */ #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ #define NO_DATA 4 /* Valid name, no data record of requested type */ #if defined(_NETBSD_SOURCE) #define NO_ADDRESS NO_DATA /* no address, look for MX record */ #endif /* * Error return codes from getaddrinfo() */ #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ defined(_NETBSD_SOURCE) #define EAI_ADDRFAMILY 1 /* address family for hostname not supported */ #define EAI_AGAIN 2 /* temporary failure in name resolution */ #define EAI_BADFLAGS 3 /* invalid value for ai_flags */ #define EAI_FAIL 4 /* non-recoverable failure in name resolution */ #define EAI_FAMILY 5 /* ai_family not supported */ #define EAI_MEMORY 6 /* memory allocation failure */ #define EAI_NODATA 7 /* no address associated with hostname */ #define EAI_NONAME 8 /* hostname nor servname provided, or not known */ #define EAI_SERVICE 9 /* servname not supported for ai_socktype */ #define EAI_SOCKTYPE 10 /* ai_socktype not supported */ #define EAI_SYSTEM 11 /* system error returned in errno */ #define EAI_BADHINTS 12 /* invalid value for hints */ #define EAI_PROTOCOL 13 /* resolved protocol is unknown */ #define EAI_OVERFLOW 14 /* argument buffer overflow */ #define EAI_MAX 15 #endif /* _POSIX_C_SOURCE >= 200112 || _XOPEN_SOURCE >= 520 || _NETBSD_SOURCE */ /* * Flag values for getaddrinfo() */ #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ defined(_NETBSD_SOURCE) #define AI_PASSIVE 0x00000001 /* get address to use bind() */ #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ #define AI_NUMERICHOST 0x00000004 /* prevent host name resolution */ #define AI_NUMERICSERV 0x00000008 /* prevent service name resolution */ /* valid flags for addrinfo (not a standard def, apps should not use it) */ #define AI_MASK \ (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV) #endif #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ defined(_NETBSD_SOURCE) /* * Constants for getnameinfo() */ #if defined(_NETBSD_SOURCE) #define NI_MAXHOST 1025 #define NI_MAXSERV 32 #endif /* * Flag values for getnameinfo() */ #define NI_NOFQDN 0x00000001 #define NI_NUMERICHOST 0x00000002 #define NI_NAMEREQD 0x00000004 #define NI_NUMERICSERV 0x00000008 #define NI_DGRAM 0x00000010 #define NI_NUMERICSCOPE 0x00000040 /* * Scope delimit character */ #if defined(_NETBSD_SOURCE) #define SCOPE_DELIMITER '%' #endif #endif /* (_POSIX_C_SOURCE - 0) >= 200112L || ... */ __BEGIN_DECLS void endhostent(void); void endnetent(void); void endprotoent(void); void endservent(void); #if (_XOPEN_SOURCE - 0) >= 520 && (_XOPEN_SOURCE - 0) < 600 || \ defined(_NETBSD_SOURCE) #if 0 /* we do not ship this */ void freehostent(struct hostent *); #endif #endif struct hostent *gethostbyaddr(const char *, socklen_t, int); struct hostent *gethostbyname(const char *); #if defined(_NETBSD_SOURCE) struct hostent *gethostbyname2(const char *, int); #endif struct hostent *gethostent(void); struct netent *getnetbyaddr(uint32_t, int); struct netent *getnetbyname(const char *); struct netent *getnetent(void); struct protoent *getprotobyname(const char *); struct protoent *getprotobynumber(int); struct protoent *getprotoent(void); struct servent *getservbyname(const char *, const char *); struct servent *getservbyport(int, const char *); struct servent *getservent(void); #if defined(_NETBSD_SOURCE) void herror(const char *); const char *hstrerror(int); #endif void sethostent(int); #if defined(_NETBSD_SOURCE) /* void sethostfile(const char *); */ #endif void setnetent(int); void setprotoent(int); #if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 520 || \ defined(_NETBSD_SOURCE) void setservent(int); int getaddrinfo(const char * __restrict, const char * __restrict, const struct addrinfo * __restrict, struct addrinfo ** __restrict); int getnameinfo(const struct sockaddr * __restrict, socklen_t, char * __restrict, socklen_t, char * __restrict, socklen_t, int); void freeaddrinfo(struct addrinfo *); const char *gai_strerror(int); #endif void setservent(int); __END_DECLS #endif /* !_NETDB_H_ */