/*******************************************************************************

    Copyright(C) Jonas 'Sortie' Termansen 2013.

    This file is part of the Sortix C Library.

    The Sortix C Library is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or (at your
    option) any later version.

    The Sortix C Library is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
    License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.

    netdb.h
    Definitions for network database operations.

*******************************************************************************/

#ifndef _NETDB_H
#define _NETDB_H 1

#include <features.h>
#include <inttypes.h>

__BEGIN_DECLS

@include(in_port_t.h)
@include(in_addr_t.h)
@include(socklen_t.h)

struct hostent
{
	char* h_name;
	char** h_aliases;
	char** h_addr_list;
	int h_addrtype;
	int h_length;
};

struct netent
{
	char* n_name;
	char** n_aliases;
	int n_addrtype;
	uint32_t n_net;
};

struct protoent
{
	char* p_name;
	char** p_aliases;
	int p_proto;
};

struct servent
{
	char* s_name;
	char** s_aliases;
	char* s_proto;
	int s_port;
};

struct addrinfo
{
	int ai_flags;
	int ai_family;
	int ai_socktype;
	int ai_protocol;
	socklen_t ai_addrlen;
	struct sockaddr* ai_addr;
	char* ai_canonname;
	struct addrinfo* ai_next;
};

/* TODO: Figure out how this relates to Sortix. */
#define IPPORT_RESERVED 1024

#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)

#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)

#define EAI_AGAIN 1
#define EAI_BADFLAGS 2
#define EAI_FAIL 3
#define EAI_FAMILY 4
#define EAI_MEMORY 5
#define EAI_NONAME 6
#define EAI_SERVICE 7
#define EAI_SOCKTYPE 8
#define EAI_SYSTEM 9
#define EAI_OVERFLOW 10

/* These are not standardized, but are provided on other platforms and existing
   sofware uses them, so let's just provide ourselves. */
#define NI_MAXHOST 1025
#define NI_MAXSERV 32

void endhostent(void);
void endnetent(void);
void endprotoent(void);
void endservent(void);
void freeaddrinfo(struct addrinfo*);
const char* gai_strerror(int);
int getaddrinfo(const char* __restrict, const char* __restrict,
                const struct addrinfo* __restrict, struct addrinfo** __restrict);
struct hostent* gethostent(void);
int getnameinfo(const struct sockaddr* __restrict, socklen_t, char* __restrict,
                socklen_t, char* __restrict, socklen_t, int);
struct netent* getnetbyaddr(uint32_t, int);
struct netent* getnetbyname(const char*);
struct netent* getnetent(void);
struct protoent* getprotobyname(const char*);
struct protoent* getprotobynumber(int);
struct protoent* getprotoent(void);
struct servent* getservbyname(const char*, const char*);
struct servent* getservbyport(int, const char*);
struct servent* getservent(void);
void sethostent(int);
void setnetent(int);
void setprotoent(int);
void setservent(int);

__END_DECLS

#endif