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// Copyright (c) 2020, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "net/resolve.h"
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#include <boost/utility/string_ref.hpp>
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#include "common/dns_utils.h"
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#include "common/expect.h"
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#include "net/error.h"
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namespace net
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{
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namespace dnssec
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{
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expect<service_response> resolve_hostname(const std::string& addr, const std::string& tlsa_port)
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{
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// use basic (blocking) unbound for now, possibly refactor later
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tools::DNSResolver& resolver = tools::DNSResolver::instance();
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bool dnssec_available = false;
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bool dnssec_valid = false;
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std::vector<std::string> ip_records = resolver.get_ipv4(addr, dnssec_available, dnssec_valid);
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if (dnssec_available && !dnssec_valid)
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return {net::error::bogus_dnssec};
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if (ip_records.empty())
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{
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ip_records = resolver.get_ipv6(addr, dnssec_available, dnssec_valid);
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if (dnssec_available && !dnssec_valid)
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return {net::error::bogus_dnssec};
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if (ip_records.empty())
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return {net::error::dns_query_failure};
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}
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std::vector<std::string> tlsa{};
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if (dnssec_available && !tlsa_port.empty())
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{
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tlsa = resolver.get_tlsa_tcp_record(addr, tlsa_port, dnssec_available, dnssec_valid);
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if (!dnssec_valid)
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return {net::error::bogus_dnssec};
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}
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return {{std::move(ip_records), std::move(tlsa)}};
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}
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} // dnssec
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} // net
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@ -0,0 +1,47 @@
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// Copyright (c) 2020, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <string>
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#include <vector>
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template<typename> class expect;
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namespace net
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{
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namespace dnssec
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{
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struct service_response
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{
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std::vector<std::string> ip; //!< IPv4/6 records in dotted or semicolon notation
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std::vector<std::string> tlsa; //!< DANE/TLSA records
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};
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//! \return IP + (optionally) DANE/TLSA records, failing if DNSSEC signature is "bogus"
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expect<service_response> resolve_hostname(const std::string& addr, const std::string& tlsa_port = {});
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} // dnssec
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} // net
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