/*
 * Copyright 2023, Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef _NETDB_H_
#define _NETDB_H_

#include <stdint.h>
#include <netinet/in.h>


#ifdef __cplusplus
extern "C" {
#endif


struct hostent {
        char* h_name;
        char** h_aliases;
        int h_addrtype;
        int h_length;
        char** h_addr_list;
#define h_addr  h_addr_list[0]
};

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

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

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

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


#if defined(_DEFAULT_SOURCE)
extern int * __h_errno(void);
#define h_errno (*__h_errno())

void herror(const char *);
const char *hstrerror(int);

#define NETDB_INTERNAL  -1
#define NETDB_SUCCESS   0
#define HOST_NOT_FOUND  1
#define TRY_AGAIN               2
#define NO_RECOVERY             3
#define NO_DATA                 4
#define NO_ADDRESS              NO_DATA
#endif


/* getaddrinfo, getnameinfo */
#define AI_PASSIVE              0x00000001
#define AI_CANONNAME    0x00000002
#define AI_NUMERICHOST  0x00000004
#define AI_NUMERICSERV  0x00000008

#define AI_ALL                  0x00000100
#define AI_V4MAPPED_CFG 0x00000200
#define AI_ADDRCONFIG   0x00000400
#define AI_V4MAPPED             0x00000800

#define AI_MASK \
        (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | AI_ADDRCONFIG | AI_ALL \
                | AI_V4MAPPED)

/* getnameinfo */
#if defined(_DEFAULT_SOURCE)
#define NI_MAXHOST              1025
#define NI_MAXSERV              32

#define SCOPE_DELIMITER '%'
#endif

#define NI_NOFQDN               0x00000001
#define NI_NUMERICHOST  0x00000002
#define NI_NAMEREQD             0x00000004
#define NI_NUMERICSERV  0x00000008
#define NI_DGRAM                0x00000010
#define NI_NUMERICSCOPE 0x00000040


/* getaddrinfo */
#define EAI_ADDRFAMILY  1
#define EAI_AGAIN               2
#define EAI_BADFLAGS    3
#define EAI_FAIL                4
#define EAI_FAMILY              5
#define EAI_MEMORY              6
#define EAI_NODATA              7
#define EAI_NONAME              8
#define EAI_SERVICE             9
#define EAI_SOCKTYPE    10
#define EAI_SYSTEM              11
#define EAI_BADHINTS    12
#define EAI_PROTOCOL    13
#define EAI_OVERFLOW    14
#define EAI_MAX                 15


void sethostent(int);
void endhostent(void);
struct hostent* gethostent(void);

void setnetent(int);
void endnetent(void);
struct netent* getnetbyaddr(uint32_t, int);
struct netent* getnetbyname(const char *);
struct netent* getnetent(void);

void setprotoent(int);
void endprotoent(void);
struct protoent* getprotoent(void);
struct protoent* getprotobyname(const char *);
struct protoent* getprotobynumber(int);

void setservent(int);
void endservent(void);
struct servent* getservent(void);
struct servent* getservbyname(const char *, const char *);
struct servent* getservbyport(int, const char *);

struct hostent* gethostbyaddr(const void *address, socklen_t length, int type);
struct hostent* gethostbyname(const char *name);
struct hostent* gethostbyname2(const char *name, int type);

int getaddrinfo(const char *, const char *, const struct addrinfo *,
        struct addrinfo **);
int getnameinfo(const struct sockaddr *, socklen_t, char *, socklen_t,
        char *, socklen_t, int);
void freeaddrinfo(struct addrinfo *);

const char* gai_strerror(int);


#ifdef __cplusplus
}
#endif

#endif /* _NETDB_H_ */