/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 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.
 *
 * SPDX-License-Identifier: curl
 *
 ***************************************************************************/
#include "unitcheck.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

#include "curl_addrinfo.h"
#include "hash.h"
#include "vdns/dnscache.h"

static struct Curl_dnscache hp;
static char *data_key;
static struct Curl_dns_entry *data_node;

static CURLcode t1305_setup(void)
{
  Curl_dnscache_init(&hp, 7);
  return CURLE_OK;
}

static void t1305_stop(void)
{
  if(data_node) {
    Curl_freeaddrinfo(data_node->addr);
    curlx_free(data_node);
  }
  curlx_free(data_key);
  Curl_dnscache_destroy(&hp);
}

static struct Curl_addrinfo *fake_ai(void)
{
  static struct Curl_addrinfo *ai;
  static const char dummy[] = "dummy";
  size_t namelen = sizeof(dummy); /* including the null-terminator */

  ai = curlx_calloc(1,
                    sizeof(struct Curl_addrinfo) + sizeof(struct sockaddr_in) +
                    namelen);
  if(!ai)
    return NULL;

  ai->ai_addr = (void *)((char *)ai + sizeof(struct Curl_addrinfo));
  ai->ai_canonname = (void *)((char *)ai->ai_addr +
                              sizeof(struct sockaddr_in));
  memcpy(ai->ai_canonname, dummy, namelen);

  ai->ai_family = AF_INET;
  ai->ai_addrlen = sizeof(struct sockaddr_in);

  return ai;
}

static CURLcode create_node(void)
{
  data_key = curl_maprintf("%s:%d", "dummy", 0);
  if(!data_key)
    return CURLE_OUT_OF_MEMORY;

  data_node = curlx_calloc(1, sizeof(struct Curl_dns_entry));
  if(!data_node)
    return CURLE_OUT_OF_MEMORY;

  data_node->addr = fake_ai();
  if(!data_node->addr)
    return CURLE_OUT_OF_MEMORY;

  return CURLE_OK;
}

static CURLcode test_unit1305(const char *arg)
{
  UNITTEST_BEGIN(t1305_setup())

  struct Curl_dns_entry *nodep;
  size_t key_len;

  /* Test 1305 exits without adding anything to the hash */
  if(testnum == 1306) {
    CURLcode result = create_node();
    abort_unless(result == CURLE_OK, "data node creation failed");
    key_len = strlen(data_key);

    data_node->refcount = 1; /* hash holds the reference */
    nodep = Curl_hash_add(&hp.entries, data_key, key_len + 1, data_node);
    abort_unless(nodep, "insertion into hash failed");
    /* Freeing is done now by Curl_hash_destroy */
    data_node = NULL;
  }

  UNITTEST_END(t1305_stop())
}
