76 lines
3.1 KiB
C++
76 lines
3.1 KiB
C++
/*
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* Copyright (c) 2015 Cryptonomex, Inc., and contributors.
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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 permitted provided that the following conditions are met:
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*
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* 1. Any modified source or binaries are used only with the BitShares network.
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*
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* 2. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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*
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* 3. 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.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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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 p2p {
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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::p2p
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