moved all stuff to github

contrib/epee/include/net/levin_helper.h

@@ -0,0 +1,137 @@
+// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * 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.
+// * Neither the name of the Andrey N. Sabelnikov 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 OWNER  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.
+// 
+
+
+
+#pragma once
+
+#include "levin_base.h"
+#include "serializeble_struct_helper.h"
+
+namespace epee
+{
+namespace levin
+{
+	template<class t_struct>
+	bool pack_struct_to_levin_message(const t_struct& t, std::string& buff, int command_id)
+	{
+		buff.resize(sizeof(levin::bucket_head));
+		levin::bucket_head& head = *(levin::bucket_head*)(&buff[0]);
+		head.m_signature = LEVIN_SIGNATURE;
+		head.m_cb = 0;
+		head.m_have_to_return_data = true;
+		head.m_command = command_id;
+		head.m_return_code = 1;
+		head.m_reservedA = rand(); //probably some flags in future
+		head.m_reservedB = rand(); //probably some check summ in future
+
+		std::string buff_strg;
+		if(!StorageNamed::save_struct_as_storage_to_buff_t<t_struct, StorageNamed::DefaultStorageType>(t, buff_strg))
+			return false;
+		
+		head.m_cb = buff_strg.size();
+		buff.append(buff_strg);
+		return true;
+	}
+
+	
+	bool pack_data_to_levin_message(const std::string& data, std::string& buff, int command_id)
+	{
+		buff.resize(sizeof(levin::bucket_head));
+		levin::bucket_head& head = *(levin::bucket_head*)(&buff[0]);
+		head.m_signature = LEVIN_SIGNATURE;
+		head.m_cb = 0;
+		head.m_have_to_return_data = true;
+		head.m_command = command_id;
+		head.m_return_code = 1;
+		head.m_reservedA = rand(); //probably some flags in future
+		head.m_reservedB = rand(); //probably some check summ in future
+
+		head.m_cb = data.size();
+		buff.append(data);
+		return true;
+	}
+
+	bool load_levin_data_from_levin_message(std::string& levin_data, const std::string& buff, int& command)
+	{
+		if(buff.size() < sizeof(levin::bucket_head) )
+		{
+			LOG_PRINT_L3("size of buff(" << buff.size() << ") is too small, at load_struct_from_levin_message");
+			return false;
+		}
+
+		levin::bucket_head& head = *(levin::bucket_head*)(&buff[0]);
+		if(head.m_signature != LEVIN_SIGNATURE)
+		{
+			LOG_PRINT_L3("Failed to read signature in levin message, at load_struct_from_levin_message");
+			return false;
+		}
+		if(head.m_cb != buff.size()-sizeof(levin::bucket_head))
+		{
+			LOG_PRINT_L3("sizes missmatch, at load_struct_from_levin_message");
+			return false;
+		}
+
+		//std::string buff_strg;
+		levin_data.assign(&buff[sizeof(levin::bucket_head)], buff.size()-sizeof(levin::bucket_head));
+		command = head.m_command;
+		return true;
+	}
+
+	template<class t_struct>
+	bool load_struct_from_levin_message(t_struct& t, const std::string& buff, int& command)
+	{
+		if(buff.size() < sizeof(levin::bucket_head) )
+		{
+			LOG_ERROR("size of buff(" << buff.size() << ") is too small, at load_struct_from_levin_message");
+			return false;
+		}
+		
+		levin::bucket_head& head = *(levin::bucket_head*)(&buff[0]);
+		if(head.m_signature != LEVIN_SIGNATURE)
+		{
+			LOG_ERROR("Failed to read signature in levin message, at load_struct_from_levin_message");
+			return false;
+		}
+		if(head.m_cb != buff.size()-sizeof(levin::bucket_head))
+		{
+			LOG_ERROR("sizes missmatch, at load_struct_from_levin_message");
+			return false;
+		}
+
+		std::string buff_strg;
+		buff_strg.assign(&buff[sizeof(levin::bucket_head)], buff.size()-sizeof(levin::bucket_head));
+
+		if(!StorageNamed::load_struct_from_storage_buff_t<t_struct, StorageNamed::DefaultStorageType>(t, buff_strg))
+		{
+			LOG_ERROR("Failed to read storage, at load_struct_from_levin_message");
+			return false;
+		}
+		command = head.m_command;
+		return true;
+	}
+}
+}