| /* |
| * 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_NETDB_H__ |
| #define __LWIP_NETDB_H__ |
| |
| #include "lwip/opt.h" |
| |
| #if LWIP_DNS && LWIP_SOCKET |
| |
| #include <stddef.h> /* for size_t */ |
| |
| #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_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(addrinfo) |
| #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_NETDB_H__ */ |