lib/curl_addrinfo.h

#ifndef HEADER_CURL_ADDRINFO_H
#define HEADER_CURL_ADDRINFO_H
/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at https://curl.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ***************************************************************************/

#include "curl_setup.h"

#ifdef HAVE_NETINET_IN_H
#  include <netinet/in.h>
#endif
#ifdef HAVE_NETDB_H
#  include <netdb.h>
#endif
#ifdef HAVE_ARPA_INET_H
#  include <arpa/inet.h>
#endif

#ifdef __VMS
#  include <in.h>
#  include <inet.h>
#  include <stdlib.h>
#endif

/*
 * Curl_addrinfo is our internal struct definition that we use to allow
 * consistent internal handling of this data. We use this even when the
 * system provides an addrinfo structure definition. And we use this for
 * all sorts of IPv4 and IPV6 builds.
 */

struct Curl_addrinfo {
  int                   ai_flags;
  int                   ai_family;
  int                   ai_socktype;
  int                   ai_protocol;
  curl_socklen_t        ai_addrlen;   /* Follow rfc3493 struct addrinfo */
  char                 *ai_canonname;
  struct sockaddr      *ai_addr;
  struct Curl_addrinfo *ai_next;
};

void
Curl_freeaddrinfo(struct Curl_addrinfo *cahead);

#ifdef HAVE_GETADDRINFO
int
Curl_getaddrinfo_ex(const char *nodename,
                    const char *servname,
                    const struct addrinfo *hints,
                    struct Curl_addrinfo **result);
#endif

struct Curl_addrinfo *
Curl_he2ai(const struct hostent *he, int port);

struct Curl_addrinfo *
Curl_ip2addr(int af, const void *inaddr, const char *hostname, int port);

struct Curl_addrinfo *Curl_str2addr(char *dotted, int port);

#ifdef USE_UNIX_SOCKETS
struct Curl_addrinfo *Curl_unix2addr(const char *path, bool *longpath,
                                     bool abstract);
#endif

#if defined(CURLDEBUG) && defined(HAVE_GETADDRINFO) && \
    defined(HAVE_FREEADDRINFO)
void
curl_dbg_freeaddrinfo(struct addrinfo *freethis, int line, const char *source);
#endif

#if defined(CURLDEBUG) && defined(HAVE_GETADDRINFO)
int
curl_dbg_getaddrinfo(const char *hostname, const char *service,
                     const struct addrinfo *hints, struct addrinfo **result,
                     int line, const char *source);
#endif

#ifdef HAVE_GETADDRINFO
#ifdef USE_RESOLVE_ON_IPS
void Curl_addrinfo_set_port(struct Curl_addrinfo *addrinfo, int port);
#else
#define Curl_addrinfo_set_port(x,y)
#endif
#endif

#endif /* HEADER_CURL_ADDRINFO_H */