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| Original file line number | Diff line number | Diff line change |
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@@ -34,6 +34,7 @@ namespace net | |
| { | ||
| enum class error : int; | ||
| class tor_address; | ||
| class i2p_address; | ||
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| namespace socks | ||
| { | ||
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| @@ -0,0 +1,200 @@ | ||
| // Copyright (c) 2019, 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. | ||
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| #include "i2p_address.h" | ||
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| #include <algorithm> | ||
| #include <boost/spirit/include/karma_generate.hpp> | ||
| #include <boost/spirit/include/karma_uint.hpp> | ||
| #include <cassert> | ||
| #include <cstring> | ||
| #include <limits> | ||
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| #include "net/error.h" | ||
| #include "serialization/keyvalue_serialization.h" | ||
| #include "storages/portable_storage.h" | ||
| #include "string_tools.h" | ||
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| namespace net | ||
| { | ||
| namespace | ||
| { | ||
| // !TODO only b32 addresses right now | ||
| constexpr const char tld[] = u8".b32.i2p"; | ||
| constexpr const char unknown_host[] = "<unknown i2p host>"; | ||
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| constexpr const unsigned b32_length = 52; | ||
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| constexpr const char base32_alphabet[] = | ||
| u8"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz234567"; | ||
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| expect<void> host_check(boost::string_ref host) noexcept | ||
| { | ||
| if (!host.ends_with(tld)) | ||
| return {net::error::expected_tld}; | ||
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| host.remove_suffix(sizeof(tld) - 1); | ||
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| if (host.size() != b32_length) | ||
| return {net::error::invalid_i2p_address}; | ||
| if (host.find_first_not_of(base32_alphabet) != boost::string_ref::npos) | ||
| return {net::error::invalid_i2p_address}; | ||
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| return success(); | ||
| } | ||
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| struct i2p_serialized | ||
| { | ||
| std::string host; | ||
| std::uint16_t port; | ||
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| BEGIN_KV_SERIALIZE_MAP() | ||
| KV_SERIALIZE(host) | ||
| KV_SERIALIZE(port) | ||
| END_KV_SERIALIZE_MAP() | ||
| }; | ||
| } | ||
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| i2p_address::i2p_address(const boost::string_ref host, const std::uint16_t port) noexcept | ||
| : port_(port) | ||
| { | ||
| // this is a private constructor, throw if moved to public | ||
| assert(host.size() < sizeof(host_)); | ||
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| const std::size_t length = std::min(sizeof(host_) - 1, host.size()); | ||
| std::memcpy(host_, host.data(), length); | ||
| std::memset(host_ + length, 0, sizeof(host_) - length); | ||
| } | ||
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| const char* i2p_address::unknown_str() noexcept | ||
| { | ||
| return unknown_host; | ||
| } | ||
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| i2p_address::i2p_address() noexcept | ||
| : port_(0) | ||
| { | ||
| static_assert(sizeof(unknown_host) <= sizeof(host_), "bad buffer size"); | ||
| std::memcpy(host_, unknown_host, sizeof(unknown_host)); | ||
| std::memset(host_ + sizeof(unknown_host), 0, sizeof(host_) - sizeof(unknown_host)); | ||
| } | ||
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| expect<i2p_address> i2p_address::make(const boost::string_ref address, const std::uint16_t default_port) | ||
| { | ||
| boost::string_ref host = address.substr(0, address.rfind(':')); | ||
| const boost::string_ref port = | ||
| address.substr(host.size() + (host.size() == address.size() ? 0 : 1)); | ||
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| MONERO_CHECK(host_check(host)); | ||
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| std::uint16_t porti = default_port; | ||
| if (!port.empty() && !epee::string_tools::get_xtype_from_string(porti, std::string{port})) | ||
| return {net::error::invalid_port}; | ||
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| static_assert(b32_length + sizeof(tld) == sizeof(i2p_address::host_), "bad internal host size"); | ||
| return i2p_address{host, porti}; | ||
| } | ||
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| bool i2p_address::_load(epee::serialization::portable_storage& src, epee::serialization::section* hparent) | ||
| { | ||
| i2p_serialized in{}; | ||
| if (in._load(src, hparent) && in.host.size() < sizeof(host_) && (in.host == unknown_host || !host_check(in.host).has_error())) | ||
| { | ||
| std::memcpy(host_, in.host.data(), in.host.size()); | ||
| std::memset(host_ + in.host.size(), 0, sizeof(host_) - in.host.size()); | ||
| port_ = in.port; | ||
| return true; | ||
| } | ||
| static_assert(sizeof(unknown_host) <= sizeof(host_), "bad buffer size"); | ||
| std::memcpy(host_, unknown_host, sizeof(unknown_host)); // include null terminator | ||
| port_ = 0; | ||
| return false; | ||
| } | ||
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| bool i2p_address::store(epee::serialization::portable_storage& dest, epee::serialization::section* hparent) const | ||
| { | ||
| const i2p_serialized out{std::string{host_}, port_}; | ||
| return out.store(dest, hparent); | ||
| } | ||
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| i2p_address::i2p_address(const i2p_address& rhs) noexcept | ||
| : port_(rhs.port_) | ||
| { | ||
| std::memcpy(host_, rhs.host_, sizeof(host_)); | ||
| } | ||
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| i2p_address& i2p_address::operator=(const i2p_address& rhs) noexcept | ||
| { | ||
| if (this != std::addressof(rhs)) | ||
| { | ||
| port_ = rhs.port_; | ||
| std::memcpy(host_, rhs.host_, sizeof(host_)); | ||
| } | ||
| return *this; | ||
| } | ||
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| bool i2p_address::is_unknown() const noexcept | ||
| { | ||
| static_assert(1 <= sizeof(host_), "host size too small"); | ||
| return host_[0] == '<'; // character is not allowed otherwise | ||
| } | ||
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| bool i2p_address::equal(const i2p_address& rhs) const noexcept | ||
| { | ||
| return port_ == rhs.port_ && is_same_host(rhs); | ||
| } | ||
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| bool i2p_address::less(const i2p_address& rhs) const noexcept | ||
| { | ||
| return std::strcmp(host_str(), rhs.host_str()) < 0 || port() < rhs.port(); | ||
| } | ||
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| bool i2p_address::is_same_host(const i2p_address& rhs) const noexcept | ||
| { | ||
| return std::strcmp(host_str(), rhs.host_str()) == 0; | ||
| } | ||
|
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| std::string i2p_address::str() const | ||
| { | ||
| const std::size_t host_length = std::strlen(host_str()); | ||
| const std::size_t port_length = | ||
| port_ == 0 ? 0 : std::numeric_limits<std::uint16_t>::digits10 + 2; | ||
|
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| std::string out{}; | ||
| out.reserve(host_length + port_length); | ||
| out.assign(host_str(), host_length); | ||
|
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| if (port_ != 0) | ||
| { | ||
| out.push_back(':'); | ||
| namespace karma = boost::spirit::karma; | ||
| karma::generate(std::back_inserter(out), karma::ushort_, port()); | ||
| } | ||
| return out; | ||
| } | ||
| } |
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