94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
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#include "socks5.hpp"
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#include <boost/asio.hpp>
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#include <iterator>
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#include <stdexcept>
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#include <vector>
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namespace socks5 {
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SocksErrCategory const theSocksErrCategory;
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char const* SocksErrCategory::name() const noexcept
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{
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return "socks5";
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}
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std::string SocksErrCategory::message(int ev) const
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{
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switch (static_cast<SocksErrc>(ev))
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{
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case SocksErrc::Succeeded:
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return "succeeded";
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case SocksErrc::GeneralFailure:
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return "general SOCKS server failure";
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case SocksErrc::NotAllowed:
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return "connection not allowed by ruleset";
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case SocksErrc::NetworkUnreachable:
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return "network unreachable";
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case SocksErrc::HostUnreachable:
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return "host unreachable";
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case SocksErrc::ConnectionRefused:
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return "connection refused";
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case SocksErrc::TtlExpired:
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return "TTL expired";
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case SocksErrc::CommandNotSupported:
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return "command not supported";
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case SocksErrc::AddressNotSupported:
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return "address type not supported";
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case SocksErrc::WrongVersion:
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return "bad server protocol version";
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case SocksErrc::NoAcceptableMethods:
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return "server rejected authentication methods";
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case SocksErrc::AuthenticationFailed:
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return "server rejected authentication";
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case SocksErrc::UnsupportedEndpointAddress:
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return "server sent unknown endpoint address";
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case SocksErrc::DomainTooLong:
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return "domain name too long";
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case SocksErrc::UsernameTooLong:
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return "username too long";
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case SocksErrc::PasswordTooLong:
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return "password too long";
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default:
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return "(unrecognized error)";
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}
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}
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namespace detail {
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auto make_socks_error(SocksErrc const err) -> boost::system::error_code
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{
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return boost::system::error_code{int(err), theSocksErrCategory};
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}
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auto push_host(Host const& host, std::vector<uint8_t>& buffer) -> void
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{
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std::visit(overloaded{[&buffer](std::string_view const hostname) {
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buffer.push_back(uint8_t(AddressType::DomainName));
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push_buffer(buffer, hostname);
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},
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[&buffer](boost::asio::ip::address const& address) {
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if (address.is_v4())
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{
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buffer.push_back(uint8_t(AddressType::IPv4));
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push_buffer(buffer, address.to_v4().to_bytes());
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}
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else if (address.is_v6())
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{
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buffer.push_back(uint8_t(AddressType::IPv6));
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push_buffer(buffer, address.to_v6().to_bytes());
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}
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else
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{
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throw std::logic_error{"unexpected address type"};
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}
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}},
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host);
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}
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} // namespace detail
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} // namespace socks5
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