/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
│                                                                              │
│ Permission to use, copy, modify, and/or distribute this software for         │
│ any purpose with or without fee is hereby granted, provided that the         │
│ above copyright notice and this permission notice appear in all copies.      │
│                                                                              │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
│ PERFORMANCE OF THIS SOFTWARE.                                                │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/dns/dns.h"
#include "libc/macros.h"
#include "libc/mem/mem.h"
#include "libc/sock/sock.h"
#include "libc/sysv/consts/af.h"

#define SIZE    ROUNDUP(sizeof(struct addrinfo), sizeof(void *))
#define ADDRLEN sizeof(struct sockaddr_in)

struct addrinfo *newaddrinfo(uint16_t port) {
  struct addrinfo *ai;
  if ((ai = calloc(1, SIZE + ADDRLEN + DNS_NAME_MAX + 1))) {
    ai->ai_family = AF_INET;
    ai->ai_addrlen = ADDRLEN;
    ai->ai_addr4 = (struct sockaddr_in *)((char *)ai + SIZE);
    ai->ai_addr4->sin_family = AF_INET;
    ai->ai_addr4->sin_port = htons(port);
    ai->ai_canonname = (char *)ai + SIZE + ADDRLEN;
  }
  return ai;
}