/* $NetBSD: netdb.h,v 1.26 2002/05/22 09:42:37 kleink Exp $ */ /* * 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. 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 (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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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. * * @(#)netdb.h 8.1 (Berkeley) 6/2/93 * Id: netdb.h,v 4.9.1.2 1993/05/17 09:59:01 vixie Exp * - * 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. * - * --Copyright-- */ #ifndef _NETDB_H_ #define _NETDB_H_ #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(_XOPEN_SOURCE) #define _PATH_HEQUIV "/etc/hosts.equiv" #define _PATH_HOSTS "/etc/hosts" #define _PATH_NETWORKS "/etc/networks" #define _PATH_PROTOCOLS "/etc/protocols" #define _PATH_SERVICES "/etc/services" #endif extern int h_errno; /* * 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 compatiblity */ }; /* * 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 */ unsigned long n_net; /* network # XXX */ }; 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 !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 struct addrinfo { int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */ int ai_family; /* PF_xxx */ int ai_socktype; /* SOCK_xxx */ int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ #if defined(__sparc64__) int __ai_pad0; #endif socklen_t ai_addrlen; /* length of ai_addr */ #if defined(__alpha__) || (defined(__i386__) && defined(_LP64)) int __ai_pad0; #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(_XOPEN_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(_XOPEN_SOURCE) #define NO_ADDRESS NO_DATA /* no address, look for MX record */ #endif /* * Error return codes from getaddrinfo() */ #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 #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 #define EAI_PROTOCOL 13 #define EAI_MAX 14 #endif /* !_XOPEN_SOURCE || (_XOPEN_SOURCE - 0) >= 520 */ /* * Flag values for getaddrinfo() */ #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 #define AI_PASSIVE 0x00000001 /* get address to use bind() */ #define AI_CANONNAME 0x00000002 /* fill ai_canonname */ #define AI_NUMERICHOST 0x00000004 /* prevent name resolution */ /* valid flags for addrinfo */ #define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST) #endif #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 #define AI_ALL 0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */ #endif #if !defined(_XOPEN_SOURCE) #define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */ #endif #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 #define AI_ADDRCONFIG 0x00000400 /* only if any address is assigned */ #define AI_V4MAPPED 0x00000800 /* accept IPv4-mapped IPv6 address */ #endif #if !defined(_XOPEN_SOURCE) /* special recommended flags for getipnodebyname */ #define AI_DEFAULT (AI_V4MAPPED_CFG | AI_ADDRCONFIG) #endif #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 /* * Constants for getnameinfo() */ #if !defined(_XOPEN_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 #if !defined(_XOPEN_SOURCE) #define NI_WITHSCOPEID 0x00000020 /*KAME extension*/ #endif /* * Scope delimit character */ #if !defined(_XOPEN_SOURCE) #define SCOPE_DELIMITER '%' /*KAME extension*/ #endif #endif /* !_XOPEN_SOURCE || (_XOPEN_SOURCE - 0) >= 520 */ __BEGIN_DECLS void endhostent __P((void)); void endnetent __P((void)); void endprotoent __P((void)); void endservent __P((void)); #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 500 void freehostent __P((struct hostent *)); #endif struct hostent *gethostbyaddr __P((const char *, socklen_t, int)); struct hostent *gethostbyname __P((const char *)); #if !defined(_XOPEN_SOURCE) struct hostent *gethostbyname2 __P((const char *, int)); #endif struct hostent *gethostent __P((void)); #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 #if 0 /* we do not ship these */ struct hostent *getipnodebyaddr __P((const void *, size_t, int, int *)); struct hostent *getipnodebyname __P((const char *, int, int, int *)); #endif #endif struct netent *getnetbyaddr __P((unsigned long, int)); struct netent *getnetbyname __P((const char *)); struct netent *getnetent __P((void)); struct protoent *getprotobyname __P((const char *)); struct protoent *getprotobynumber __P((int)); struct protoent *getprotoent __P((void)); struct servent *getservbyname __P((const char *, const char *)); struct servent *getservbyport __P((int, const char *)); struct servent *getservent __P((void)); #if !defined(_XOPEN_SOURCE) void herror __P((const char *)); const char *hstrerror __P((int)); #endif void sethostent __P((int)); #if !defined(_XOPEN_SOURCE) /* void sethostfile __P((const char *)); */ #endif void setnetent __P((int)); void setprotoent __P((int)); #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 520 int getaddrinfo __P((const char *, const char *, const struct addrinfo *, struct addrinfo **)); int getnameinfo __P((const struct sockaddr *, socklen_t, char *, socklen_t, char *, socklen_t, int)); void freeaddrinfo __P((struct addrinfo *)); char *gai_strerror __P((int)); #endif void setservent __P((int)); __END_DECLS #endif /* !_NETDB_H_ */