79 lines
2.8 KiB
C++
79 lines
2.8 KiB
C++
/*
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* Copyright (c) 2015 Cryptonomex, Inc., and contributors.
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*
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* The MIT License
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#pragma once
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#include <fc/network/tcp_socket.hpp>
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#include <fc/crypto/aes.hpp>
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#include <fc/crypto/elliptic.hpp>
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namespace graphene { namespace net {
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/**
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* Uses ECDH to negotiate a aes key for communicating
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* with other nodes on the network.
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*/
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class stcp_socket : public virtual fc::iostream
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{
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public:
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stcp_socket();
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~stcp_socket();
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fc::tcp_socket& get_socket() { return _sock; }
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void accept();
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void connect_to( const fc::ip::endpoint& remote_endpoint );
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void bind( const fc::ip::endpoint& local_endpoint );
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virtual size_t readsome( char* buffer, size_t max );
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virtual size_t readsome( const std::shared_ptr<char>& buf, size_t len, size_t offset );
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virtual bool eof()const;
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virtual size_t writesome( const char* buffer, size_t len );
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virtual size_t writesome( const std::shared_ptr<const char>& buf, size_t len, size_t offset );
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virtual void flush();
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virtual void close();
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using istream::get;
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void get( char& c ) { read( &c, 1 ); }
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fc::sha512 get_shared_secret() const { return _shared_secret; }
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private:
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void do_key_exchange();
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fc::sha512 _shared_secret;
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fc::ecc::private_key _priv_key;
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fc::array<char,8> _buf;
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//uint32_t _buf_len;
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fc::tcp_socket _sock;
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fc::aes_encoder _send_aes;
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fc::aes_decoder _recv_aes;
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std::shared_ptr<char> _read_buffer;
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std::shared_ptr<char> _write_buffer;
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#ifndef NDEBUG
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bool _read_buffer_in_use;
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bool _write_buffer_in_use;
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#endif
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};
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typedef std::shared_ptr<stcp_socket> stcp_socket_ptr;
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} } // graphene::net
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