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128 lines
4.3 KiB
C++
128 lines
4.3 KiB
C++
// Copyright (c) 2014, 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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//
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// Parts of this file are originally copyright (c) 2006-2013, Andrey N. Sabelnikov
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#ifndef _LEVIN_BASE_H_
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#define _LEVIN_BASE_H_
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#include "net_utils_base.h"
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#define LEVIN_SIGNATURE 0x0101010101012101LL //Bender's nightmare
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namespace epee
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{
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namespace levin
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{
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#pragma pack(push)
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#pragma pack(1)
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struct bucket_head
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{
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uint64_t m_signature;
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uint64_t m_cb;
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bool m_have_to_return_data;
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uint32_t m_command;
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int32_t m_return_code;
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uint32_t m_reservedA; //probably some flags in future
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uint32_t m_reservedB; //probably some check sum in future
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};
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#pragma pack(pop)
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#pragma pack(push)
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#pragma pack(1)
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struct bucket_head2
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{
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uint64_t m_signature;
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uint64_t m_cb;
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bool m_have_to_return_data;
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uint32_t m_command;
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int32_t m_return_code;
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uint32_t m_flags;
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uint32_t m_protocol_version;
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};
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#pragma pack(pop)
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#define LEVIN_DEFAULT_TIMEOUT_PRECONFIGURED 0
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#define LEVIN_DEFAULT_MAX_PACKET_SIZE 100000000 //100MB by default
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#define LEVIN_PACKET_REQUEST 0x00000001
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#define LEVIN_PACKET_RESPONSE 0x00000002
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#define LEVIN_PROTOCOL_VER_0 0
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#define LEVIN_PROTOCOL_VER_1 1
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template<class t_connection_context = net_utils::connection_context_base>
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struct levin_commands_handler
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{
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virtual int invoke(int command, const std::string& in_buff, std::string& buff_out, t_connection_context& context)=0;
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virtual int notify(int command, const std::string& in_buff, t_connection_context& context)=0;
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virtual void callback(t_connection_context& context){};
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virtual void on_connection_new(t_connection_context& context){};
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virtual void on_connection_close(t_connection_context& context){};
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};
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#define LEVIN_OK 0
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#define LEVIN_ERROR_CONNECTION -1
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#define LEVIN_ERROR_CONNECTION_NOT_FOUND -2
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#define LEVIN_ERROR_CONNECTION_DESTROYED -3
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#define LEVIN_ERROR_CONNECTION_TIMEDOUT -4
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#define LEVIN_ERROR_CONNECTION_NO_DUPLEX_PROTOCOL -5
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#define LEVIN_ERROR_CONNECTION_HANDLER_NOT_DEFINED -6
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#define LEVIN_ERROR_FORMAT -7
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#define DESCRIBE_RET_CODE(code) case code: return #code;
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inline
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const char* get_err_descr(int err)
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{
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switch(err)
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{
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DESCRIBE_RET_CODE(LEVIN_OK);
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DESCRIBE_RET_CODE(LEVIN_ERROR_CONNECTION);
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DESCRIBE_RET_CODE(LEVIN_ERROR_CONNECTION_NOT_FOUND);
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DESCRIBE_RET_CODE(LEVIN_ERROR_CONNECTION_DESTROYED);
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DESCRIBE_RET_CODE(LEVIN_ERROR_CONNECTION_TIMEDOUT);
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DESCRIBE_RET_CODE(LEVIN_ERROR_CONNECTION_NO_DUPLEX_PROTOCOL);
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DESCRIBE_RET_CODE(LEVIN_ERROR_CONNECTION_HANDLER_NOT_DEFINED);
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DESCRIBE_RET_CODE(LEVIN_ERROR_FORMAT);
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default:
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return "unknown code";
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}
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}
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}
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}
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#endif //_LEVIN_BASE_H_
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