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// Copyright (c) 2014, 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 <vector>
#include <string>
namespace tools
{
/**
* @brief Provides high-level access to DNS resolution
*
* This class is designed to provide a high-level abstraction to DNS resolution
* functionality, including access to TXT records and such. It will also
* handle DNSSEC validation of the results.
*/
class DNSResolver
{
public:
/**
* @brief Constructs and sets the URI to be resolved
*
* @param uri the URI to be resolved
*/
DNSResolver(const std::string& uri);
/**
* @brief gets ipv4 addresses from DNS query
*
* returns a vector of all IPv4 "A" records for given URI.
* If no "A" records found, returns an empty vector.
*
* @return vector of strings containing ipv4 addresses
*/
std::vector<std::string> get_ipv4();
/**
* @brief gets ipv6 addresses from DNS query
*
* returns a vector of all IPv6 "A" records for given URI.
* If no "A" records found, returns an empty vector.
*
* @return vector of strings containing ipv6 addresses
*/
std::vector<std::string> get_ipv6();
/**
* @brief gets a monero address from the TXT record of the DNS query response
*
* returns a monero address string from the TXT record associated with URI
* if no TXT record present, or no valid monero address in TXT,
* returns an empty string.
*
* @return
*/
std::string get_payment_address();
}; // class DNSResolver
} // namespace tools
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