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// Copyright (c) 2014-2015, The Monero Project
// 
// 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.
// 
// 3. Neither the name of the copyright holder nor the names of its contributors may be
//    used to endorse or promote products derived from this software without specific
//    prior written permission.
// 
// 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.

#include <iostream>
#include <vector>

#include "gtest/gtest.h"

#include "common/dns_utils.h"

TEST(DNSResolver, IPv4Success)
{
  tools::DNSResolver resolver;

  bool avail, valid;

  auto ips = resolver.get_ipv4("example.com", avail, valid);

  ASSERT_EQ(1, ips.size());

  //ASSERT_STREQ("93.184.216.119", ips[0].c_str());

  ips = tools::DNSResolver::instance().get_ipv4("example.com", avail, valid);

  ASSERT_EQ(1, ips.size());

  //ASSERT_STREQ("93.184.216.119", ips[0].c_str());
}

TEST(DNSResolver, IPv4Failure)
{
  // guaranteed by IANA/ICANN/RFC to be invalid
  tools::DNSResolver resolver;

  bool avail, valid;

  auto ips = resolver.get_ipv4("example.invalid", avail, valid);

  ASSERT_EQ(0, ips.size());

  ips = tools::DNSResolver::instance().get_ipv4("example.invalid", avail, valid);

  ASSERT_EQ(0, ips.size());
}

TEST(DNSResolver, DNSSECSuccess)
{
  tools::DNSResolver resolver;

  bool avail, valid;

  auto ips = resolver.get_ipv4("example.com", avail, valid);

  ASSERT_EQ(1, ips.size());

  //ASSERT_STREQ("93.184.216.119", ips[0].c_str());

  ASSERT_TRUE(avail);
  ASSERT_TRUE(valid);
}

TEST(DNSResolver, DNSSECFailure)
{
  tools::DNSResolver resolver;

  bool avail, valid;

  auto ips = resolver.get_ipv4("dnssec-failed.org", avail, valid);

  ASSERT_EQ(1, ips.size());

  //ASSERT_STREQ("93.184.216.119", ips[0].c_str());

  ASSERT_TRUE(avail);
  ASSERT_FALSE(valid);
}

// It would be great to include an IPv6 test and assume it'll pass, but not every ISP / resolver plays nicely with IPv6;)
/*TEST(DNSResolver, IPv6Success)
{
  tools::DNSResolver resolver;

  bool avail, valid;

  auto ips = resolver.get_ipv6("example.com", avail, valid);

  ASSERT_EQ(1, ips.size());

  ASSERT_STREQ("2606:2800:220:6d:26bf:1447:1097:aa7", ips[0].c_str());

  ips = tools::DNSResolver::instance().get_ipv6("example.com", avail, valid);

  ASSERT_EQ(1, ips.size());

  ASSERT_STREQ("2606:2800:220:6d:26bf:1447:1097:aa7", ips[0].c_str());
}*/

TEST(DNSResolver, IPv6Failure)
{
  // guaranteed by IANA/ICANN/RFC to be invalid
  tools::DNSResolver resolver;

  bool avail, valid;

  auto ips = resolver.get_ipv6("example.invalid", avail, valid);

  ASSERT_EQ(0, ips.size());

  ips = tools::DNSResolver::instance().get_ipv6("example.invalid", avail, valid);

  ASSERT_EQ(0, ips.size());
}

TEST(DNSResolver, GetTXTRecord)
{
  bool avail, valid;

  std::vector<std::string> records = tools::DNSResolver::instance().get_txt_record("donate.getmonero.org", avail, valid);

  EXPECT_NE(0, records.size());

  for (auto& rec : records)
  {
    std::cout << "TXT record for donate.getmonero.org: " << rec << std::endl;
  }
}