mirror of
https://github.com/uroni/urbackup_backend.git
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91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
/*************************************************************************
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* UrBackup - Client/Server backup system
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* Copyright (C) 2011-2016 Martin Raiber
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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**************************************************************************/
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#include "tcpstack.h"
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#include <memory.h>
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#include "../socket_header.h"
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#include "../stringtools.h"
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const unsigned int max_packet_size = 1 * 1024 * 1024;
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void CTCPStack::AddData(char* buf, size_t datasize)
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{
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if(datasize>0)
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{
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size_t osize=buffer.size();
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buffer.resize(osize+datasize);
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memcpy(&buffer[osize], buf, datasize);
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}
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}
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size_t CTCPStack::Send(SOCKET p, char* buf, size_t msglen)
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{
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char* buffer=new char[msglen+sizeof(MAX_PACKETSIZE)];
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MAX_PACKETSIZE len=(MAX_PACKETSIZE)msglen;
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memcpy(buffer, &len, sizeof(MAX_PACKETSIZE) );
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memcpy(&buffer[sizeof(MAX_PACKETSIZE)], buf, msglen);
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int rc=send(p, buffer, (int)msglen+sizeof(MAX_PACKETSIZE), 0);
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delete[] buffer;
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return (size_t)rc;
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}
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size_t CTCPStack::Send(SOCKET p, const std::string &msg)
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{
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return Send(p, (char*)msg.c_str(), msg.size());
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}
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char* CTCPStack::getPacket(size_t* packetsize)
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{
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if (buffer.size() >= sizeof(MAX_PACKETSIZE))
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{
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MAX_PACKETSIZE len;
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memcpy(&len, &buffer[0], sizeof(MAX_PACKETSIZE));
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len = little_endian(len);
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if (len<max_packet_size && buffer.size() >= (size_t)len + sizeof(MAX_PACKETSIZE))
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{
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char* buf = new char[len + 1];
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if (len>0)
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{
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memcpy(buf, &buffer[sizeof(MAX_PACKETSIZE)], len);
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}
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(*packetsize) = len;
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buffer.erase(buffer.begin(), buffer.begin() + len + sizeof(MAX_PACKETSIZE));
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buf[len] = 0;
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return buf;
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}
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}
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*packetsize = 0;
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return nullptr;
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}
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void CTCPStack::reset(void)
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{
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buffer.clear();
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}
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