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/**
* @file
* NETDB API (sockets)
*/
/*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Simon Goldschmidt
*
*/
#ifndef LWIP_HDR_NETDB_H
#define LWIP_HDR_NETDB_H
#include "lwip/opt.h"
#if LWIP_DNS && LWIP_SOCKET
#include "lwip/arch.h"
#include "lwip/inet.h"
#include "lwip/sockets.h"
#ifdef __cplusplus
extern "C" {
#endif
/* some rarely used options */
#ifndef LWIP_DNS_API_DECLARE_H_ERRNO
#define LWIP_DNS_API_DECLARE_H_ERRNO 1
#endif
#ifndef LWIP_DNS_API_DEFINE_ERRORS
#define LWIP_DNS_API_DEFINE_ERRORS 1
#endif
#ifndef LWIP_DNS_API_DEFINE_FLAGS
#define LWIP_DNS_API_DEFINE_FLAGS 1
#endif
#ifndef LWIP_DNS_API_DECLARE_STRUCTS
#define LWIP_DNS_API_DECLARE_STRUCTS 1
#endif
#if LWIP_DNS_API_DEFINE_ERRORS
/** Errors used by the DNS API functions, h_errno can be one of them */
#define EAI_NONAME 200
#define EAI_SERVICE 201
#define EAI_FAIL 202
#define EAI_MEMORY 203
#define EAI_FAMILY 204
#define HOST_NOT_FOUND 210
#define NO_DATA 211
#define NO_RECOVERY 212
#define TRY_AGAIN 213
#endif /* LWIP_DNS_API_DEFINE_ERRORS */
#if LWIP_DNS_API_DEFINE_FLAGS
/* input flags for struct addrinfo */
#define AI_PASSIVE 0x01
#define AI_CANONNAME 0x02
#define AI_NUMERICHOST 0x04
#define AI_NUMERICSERV 0x08
#define AI_V4MAPPED 0x10
#define AI_ALL 0x20
#define AI_ADDRCONFIG 0x40
#endif /* LWIP_DNS_API_DEFINE_FLAGS */
#if LWIP_DNS_API_DECLARE_STRUCTS
struct hostent {
char *h_name; /* Official name of the host. */
char **h_aliases; /* A pointer to an array of pointers to alternative host names,
terminated by a null pointer. */
int h_addrtype; /* Address type. */
int h_length; /* The length, in bytes, of the address. */
char **h_addr_list; /* A pointer to an array of pointers to network addresses (in
network byte order) for the host, terminated by a null pointer. */
#define h_addr h_addr_list[0] /* for backward compatibility */
};
struct addrinfo {
int ai_flags; /* Input flags. */
int ai_family; /* Address family of socket. */
int ai_socktype; /* Socket type. */
int ai_protocol; /* Protocol of socket. */
socklen_t ai_addrlen; /* Length of socket address. */
struct sockaddr *ai_addr; /* Socket address of socket. */
char *ai_canonname; /* Canonical name of service location. */
struct addrinfo *ai_next; /* Pointer to next in list. */
};
#endif /* LWIP_DNS_API_DECLARE_STRUCTS */
#define NETDB_ELEM_SIZE (sizeof(struct addrinfo) + sizeof(struct sockaddr_storage) + DNS_MAX_NAME_LENGTH + 1)
#if LWIP_DNS_API_DECLARE_H_ERRNO
/* application accessible error code set by the DNS API functions */
extern int h_errno;
#endif /* LWIP_DNS_API_DECLARE_H_ERRNO*/
struct hostent *lwip_gethostbyname(const char *name);
int lwip_gethostbyname_r(const char *name, struct hostent *ret, char *buf,
size_t buflen, struct hostent **result, int *h_errnop);
void lwip_freeaddrinfo(struct addrinfo *ai);
int lwip_getaddrinfo(const char *nodename,
const char *servname,
const struct addrinfo *hints,
struct addrinfo **res);
#if LWIP_COMPAT_SOCKETS
/** @ingroup netdbapi */
#define gethostbyname(name) lwip_gethostbyname(name)
/** @ingroup netdbapi */
#define gethostbyname_r(name, ret, buf, buflen, result, h_errnop) \
lwip_gethostbyname_r(name, ret, buf, buflen, result, h_errnop)
/** @ingroup netdbapi */
#define freeaddrinfo(addrinfo) lwip_freeaddrinfo(addrinfo)
/** @ingroup netdbapi */
#define getaddrinfo(nodname, servname, hints, res) \
lwip_getaddrinfo(nodname, servname, hints, res)
#endif /* LWIP_COMPAT_SOCKETS */
#ifdef __cplusplus
}
#endif
#endif /* LWIP_DNS && LWIP_SOCKET */
#endif /* LWIP_HDR_NETDB_H */
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