1 #ifndef _getaddrinfo_h
2 #define _getaddrinfo_h
3 /*
4 * This file is part of libESMTP, a library for submission of RFC 2822
5 * formatted electronic mail messages using the SMTP protocol described
6 * in RFC 2821.
7 * Modified by Jeremy T. Bouse for use in Nagios plugins
8 *
9 * Copyright (C) 2001,2002 Brian Stafford <brian@stafford.uklinux.net>
10 *
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 */
26 /* Structure and prototypes aken from RFC 2553 */
28 struct addrinfo
29 {
30 int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
31 int ai_family; /* PF_xxx */
32 int ai_socktype; /* SOCK_xxx */
33 int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
34 size_t ai_addrlen; /* length of ai_addr */
35 char *ai_canonname; /* canonical name for nodename */
36 struct sockaddr *ai_addr; /* binary address */
37 struct addrinfo *ai_next; /* next structure in linked list */
38 };
40 /* Supposed to be defined in <netdb.h> */
41 #define AI_PASSIVE 1 /* Socket address is intended for `bind'. */
42 #define AI_CANONNAME 2 /* Request for canonical name. */
43 #define AI_NUMERICHOST 4 /* Don't use name resolution. */
45 /* Supposed to be defined in <netdb.h> */
46 #define EAI_ADDRFAMILY 1 /* address family for nodename not supported */
47 #define EAI_AGAIN 2 /* temporary failure in name resolution */
48 #define EAI_BADFLAGS 3 /* invalid value for ai_flags */
49 #define EAI_FAIL 4 /* non-recoverable failure in name resolution */
50 #define EAI_FAMILY 5 /* ai_family not supported */
51 #define EAI_MEMORY 6 /* memory allocation failure */
52 #define EAI_NODATA 7 /* no address associated with nodename */
53 #define EAI_NONAME 8 /* nodename nor servname provided, or not known */
54 #define EAI_SERVICE 9 /* servname not supported for ai_socktype */
55 #define EAI_SOCKTYPE 10 /* ai_socktype not supported */
56 #define EAI_SYSTEM 11 /* system error returned in errno */
58 /* RFC 2553 / Posix resolver */
59 int getaddrinfo (const char *nodename, const char *servname,
60 const struct addrinfo *hints, struct addrinfo **res);
62 /* Free addrinfo structure and associated storage */
63 void freeaddrinfo (struct addrinfo *ai);
65 /* Convert error return from getaddrinfo() to string */
66 const char *gai_strerror (int code);
68 #endif