/* | |
* 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 | |
* | |
*/ | |
#include "lwip/opt.h" | |
#if LWIP_DNS && LWIP_SOCKET | |
#include "lwip/sockets.h" | |
/* 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_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 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_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 */ | |
#if LWIP_DNS_API_DECLARE_H_ERRNO | |
/* application accessable 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 | |
#define gethostbyname(name) lwip_gethostbyname(name) | |
#define gethostbyname_r(name, ret, buf, buflen, result, h_errnop) \ | |
lwip_gethostbyname_r(name, ret, buf, buflen, result, h_errnop) | |
#define freeaddrinfo(addrinfo) lwip_freeaddrinfo(a) | |
#define getaddrinfo(nodname, servname, hints, res) \ | |
lwip_getaddrinfo(nodname, servname, hints, res) | |
#endif /* LWIP_COMPAT_SOCKETS */ | |
#endif /* LWIP_DNS && LWIP_SOCKET */ |