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/*
* libusual - Utility library for C
*
* Copyright (c) 2010 Marko Kreen, Skype Technologies
*
* Permission to use, copy, modify, and/or 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.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.
*/
/** @file
*
* DNS lookup.
*/
#ifndef _USUAL_NETDB_H_
#define _USUAL_NETDB_H_
#include <usual/signal.h>
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifndef HAVE_GETADDRINFO_A
/** Async execution */
#ifndef GAI_WAIT
#define GAI_WAIT 0
#endif
/** Synchronous execution */
#ifndef GAI_NOWAIT
#define GAI_NOWAIT 1
#endif
/* avoid name conflicts */
#define gaicb usual_gaicb
#define getaddrinfo_a(a,b,c,d) usual_getaddrinfo_a(a,b,c,d)
/**
* Request data for getaddrinfo_a().
*
* Fields correspond to getaddrinfo() parameters.
*/
struct gaicb {
/** node name */
const char *ar_name;
/** service name */
const char *ar_service;
/** hints */
const struct addrinfo *ar_request;
/** result */
struct addrinfo *ar_result;
/* internal state */
int _state;
};
#ifndef EAI_INPROGRESS
#define EAI_INPROGRESS -100
#endif
#ifndef EAI_SYSTEM
#define EAI_SYSTEM -10
#endif
#define gai_error(gcb) ((gcb)->_state)
/**
* Compat: Async DNS lookup.
*/
int getaddrinfo_a(int mode, struct gaicb *list[], int nitems, struct sigevent *sevp);
#endif /* HAVE_GETADDRINFO_A */
#endif /* _USUAL_NETDB_H_ */
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