netdb.h

/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 * All rights reserved.
 *
 * 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.
 *
 * 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 HOLDER 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.
 */

#pragma once

#include <sys/cdefs.h>
#include <sys/types.h>

__BEGIN_DECLS

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 hostent* gethostbyname(const char*);
struct hostent* gethostbyaddr(const void* addr, socklen_t len, int type);

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

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

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

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

extern int h_errno;

#define HOST_NOT_FOUND 101
#define NO_DATA 102
#define NO_RECOVERY 103
#define TRY_AGAIN 104

__END_DECLS