/****************************************************************************
* include/netdb.h
*
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Reference: http://pubs.opengroup.org/onlinepubs/009695399/basedefs/netdb.h.html
*
* 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. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*
****************************************************************************/
#ifndef __INCLUDE_NETDB_H
#define __INCLUDE_NETDB_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
/* Inclusion of the <netdb.h> header may also make visible all symbols from
* <netinet/in.h>, <sys/socket.h>, and <inttypes.h>.
*/
#include <inttypes.h>
#include <netinet/in.h>
#include <sys/socket.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* The <netdb.h> header shall define the IPPORT_RESERVED macro with the
* value of the highest reserved Internet port number.
*/
#define IPPORT_RESERVED 0xffff /* No reserved port numbers */
/* The <netdb.h> header shall define the following macros that evaluate to
* bitwise-distinct integer constants for use in the flags field of the
* addrinfo structure:
*
* AI_PASSIVE - Socket address is intended for bind().
* AI_CANONNAME - Request for canonical name.
* AI_NUMERICHOST - Return numeric host address as name.
* AI_NUMERICSERV - Inhibit service name resolution.
* AI_V4MAPPED - If no IPv6 addresses are found, query for IPv4
* addresses and return them to the caller as IPv4-mapped
* IPv6 addresses.
* AI_ALL - Query for both IPv4 and IPv6 addresses.
* AI_ADDRCONFIG - Query for IPv4 addresses only when an IPv4 address is
* configured; query for IPv6 addresses only when an IPv6
* address is configured.
*/
#define AI_PASSIVE (1 << 0)
#define AI_CANONNAME (1 << 1)
#define AI_NUMERICHOST (1 << 2)
#define AI_NUMERICSERV (1 << 3)
#define AI_V4MAPPED (1 << 4)
#define AI_ALL (1 << 5)
#define AI_ADDRCONFIG (1 << 6)
/* The <netdb.h> header shall define the following macros that evaluate to
* bitwise-distinct integer constants for use in the flags argument to
* getnameinfo():
*
* NI_NOFQDN - Only the nodename portion of the FQDN is returned for
* local hosts.
* NI_NUMERICHOST - The numeric form of the node's address is returned
* instead of its name.
* NI_NAMEREQD - Return an error if the node's name cannot be located
* in the database.
* NI_NUMERICSERV - The numeric form of the service address is returned
* instead of its name.
* NI_NUMERICSCOPE - For IPv6 addresses, the numeric form of the scope
* identifier is returned instead of its name.
* NI_DGRAM - Indicates that the service is a datagram service
* (SOCK_DGRAM).
*/
#define NI_NOFQDN (1 << 0)
#define NI_NUMERICHOST (1 << 1)
#define NI_NAMEREQD (1 << 2)
#define NI_NUMERICSERV (1 << 3)
#define NI_NUMERICSCOPE (1 << 4)
#define NI_DGRAM (1 << 5)
/* The <netdb.h> header shall define the following macros for use as error
* values for gethostbyaddr() and gethostbyname()
*/
#define HOST_NOT_FOUND 1
#define NO_DATA 2
#define NO_RECOVERY 3
#define TRY_AGAIN 4
/* Address Information Errors. The <netdb.h> header shall define the
* following macros for use as error values for getaddrinfo() and
* getnameinfo():
*
* EAI_AGAIN - The name could not be resolved at this time. Future
* attempts may succeed.
* EAI_BADFLAGS - The flags had an invalid value.EAI_FAILA non-
* recoverable error occurred.
* EAI_FAMILY - The address family was not recognized or the address
* length was invalid for the specified family.
* EAI_MEMORY - There was a memory allocation failure.
* EAI_NONAME - The name does not resolve for the supplied
* parameters. NI_NAMEREQD is set and the host's name
* cannot be located, or both nodename and servname were
* null.
* EAI_SERVICE - The service passed was not recognized for the
* specified socket type.
* EAI_SOCKTYPE - The intended socket type was not recognized.
* EAI_SYSTEM - A system error occurred. The error code can be found
* in errno.
* EAI_OVERFLOW - An argument buffer overflowed.
*/
#define EAI_AGAIN 1
#define EAI_BADFLAGS 2
#define EAI_FAMILY 3
#define EAI_MEMORY 4
#define EAI_NONAME 5
#define EAI_SERVICE 6
#define EAI_SOCKTYPE 7
#define EAI_SYSTEM 8
#define EAI_OVERFLOW 9
/****************************************************************************
* Public Types
****************************************************************************/
struct hostent
{
FAR char *h_name; /* Official name of the host. */
FAR 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. */
FAR 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. */
};
struct netent
{
FAR char *n_name; /* Official, fully-qualified (including the domain)
* name of the host. */
FAR char **n_aliases; /* A pointer to an array of pointers to alternative
* network names, terminated by a null pointer. */
int n_addrtype; /* The address type of the network. */
uint32_t n_net; /* The network number, in host byte order. */
};
struct protoent
{
FAR char *p_name; /* Official name of the protocol. */
FAR char **p_aliases; /* A pointer to an array of pointers to
* alternative protocol names, terminated by a
* null pointer. */
int p_proto; /* The protocol number. */
};
struct servent
{
FAR char *s_name; /* Official name of the service. */
FAR char **s_aliases; /* A pointer to an array of pointers to
* alternative service names, terminated by a
* null pointer. */
int s_port; /* The port number at which the service resides,
* in network byte order. */
FAR char *s_proto; /* The name of the protocol to use when
* contacting the service. */
};
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. */
FAR struct sockaddr *ai_addr; /* Socket address of socket. */
FAR char *ai_canonname; /* Canonical name of service location. */
sFAR truct addrinfo *ai_next; /* Pointer to next in list. */
};
/****************************************************************************
* Public Data
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/* When the <netdb.h> header is included, h_errno shall be available as a
* modifiable lvalue of type int. It is unspecified whether h_errno is a
* macro or an identifier declared with external linkage.
*/
/* To be provided */
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#if 0 /* None of these are yet supported */
void endhostent(void);
void endnetent(void);
void endprotoent(void);
void endservent(void);
void freeaddrinfo(FAR struct addrinfo *);
const char *gai_strerror(int);
int getaddrinfo(FAR const char *restrict,
FAR const char *restrict,
FAR const struct addrinfo *restrict,
FAR struct addrinfo **restrict);
struct hostent *gethostbyaddr(FAR const void *, socklen_t, int);
struct hostent *gethostbyname(FAR const char *);
struct hostent *gethostent(void);
int getnameinfo(FAR const struct sockaddr *restrict, socklen_t,
FAR char *restrict, socklen_t, FAR char *restrict,
socklen_t, int);
struct netent *getnetbyaddr(uint32_t, int);
struct netent *getnetbyname(FAR const char *);
struct netent *getnetent(void);
struct protoent *getprotobyname(FAR const char *);
struct protoent *getprotobynumber(int);
struct protoent *getprotoent(void);
struct servent *getservbyname(FAR const char *, FAR const char *);
struct servent *getservbyport(int, FAR const char *);
struct servent *getservent(void);
void sethostent(int);
void setnetent(int);
void setprotoent(int);
void setservent(int);
#endif /* None of these are yet supported */
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __INCLUDE_NETDB_H */
