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140 lines
5 KiB
C++
140 lines
5 KiB
C++
// Copyright (c) 2019, 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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#pragma once
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#include <boost/utility/string_ref.hpp>
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#include <cstdint>
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#include <string>
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#include "common/expect.h"
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#include "net/enums.h"
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#include "net/error.h"
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namespace epee
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{
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namespace serialization
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{
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class portable_storage;
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struct section;
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}
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}
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namespace net
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{
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//! b32 i2p address; internal format not condensed/decoded.
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class i2p_address
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{
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std::uint16_t port_;
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char host_[61]; // null-terminated
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//! Keep in private, `host.size()` has no runtime check
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i2p_address(boost::string_ref host, std::uint16_t port) noexcept;
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public:
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//! \return Size of internal buffer for host.
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static constexpr std::size_t buffer_size() noexcept { return sizeof(host_); }
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//! \return `<unknown tor host>`.
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static const char* unknown_str() noexcept;
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//! An object with `port() == 0` and `host_str() == unknown_str()`.
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i2p_address() noexcept;
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//! \return A default constructed `i2p_address` object.
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static i2p_address unknown() noexcept { return i2p_address{}; }
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/*!
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Parse `address` in b32 i2p format (i.e. x.b32.i2p:80)
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with `default_port` being used if port is not specified in
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`address`.
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*/
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static expect<i2p_address> make(boost::string_ref address, std::uint16_t default_port = 0);
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//! Load from epee p2p format, and \return false if not valid tor address
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bool _load(epee::serialization::portable_storage& src, epee::serialization::section* hparent);
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//! Store in epee p2p format
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bool store(epee::serialization::portable_storage& dest, epee::serialization::section* hparent) const;
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// Moves and copies are currently identical
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i2p_address(const i2p_address& rhs) noexcept;
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~i2p_address() = default;
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i2p_address& operator=(const i2p_address& rhs) noexcept;
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//! \return True if default constructed or via `unknown()`.
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bool is_unknown() const noexcept;
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bool equal(const i2p_address& rhs) const noexcept;
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bool less(const i2p_address& rhs) const noexcept;
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//! \return True if i2p addresses are identical.
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bool is_same_host(const i2p_address& rhs) const noexcept;
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//! \return `x.b32.i2p` or `x.b32.i2p:z` if `port() != 0`.
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std::string str() const;
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//! \return Null-terminated `x.b32.i2p` value or `unknown_str()`.
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const char* host_str() const noexcept { return host_; }
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//! \return Port value or `0` if unspecified.
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std::uint16_t port() const noexcept { return port_; }
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static constexpr bool is_loopback() noexcept { return false; }
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static constexpr bool is_local() noexcept { return false; }
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static constexpr epee::net_utils::address_type get_type_id() noexcept
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{
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return epee::net_utils::address_type::i2p;
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}
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static constexpr epee::net_utils::zone get_zone() noexcept
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{
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return epee::net_utils::zone::i2p;
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}
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//! \return `!is_unknown()`.
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bool is_blockable() const noexcept { return !is_unknown(); }
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};
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inline bool operator==(const i2p_address& lhs, const i2p_address& rhs) noexcept
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{
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return lhs.equal(rhs);
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}
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inline bool operator!=(const i2p_address& lhs, const i2p_address& rhs) noexcept
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{
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return !lhs.equal(rhs);
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}
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inline bool operator<(const i2p_address& lhs, const i2p_address& rhs) noexcept
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{
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return lhs.less(rhs);
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}
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} // net
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