nymea/libguh/coap/coappdublock.cpp

77 lines
2.9 KiB
C++

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* *
* Copyright (C) 2015 Simon Stuerz <simon.stuerz@guh.guru> *
* *
* This file is part of QtCoap. *
* *
* QtCoap is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, version 3 of the License. *
* *
* QtCoap is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with QtCoap. If not, see <http://www.gnu.org/licenses/>. *
* *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "coappdublock.h"
CoapPduBlock::CoapPduBlock()
{
}
CoapPduBlock::CoapPduBlock(const QByteArray &blockData)
{
if (blockData.size() == 1) {
quint8 block = (quint8)blockData.at(0);
m_blockNumber = (block & 0xf0) >> 4;
m_blockSize = (quint8) pow(2, (block & 0x07) + 4);
m_moreFlag = (bool)((block & 0x8) >> 3);
} else if (blockData.size() == 2) {
quint16 block = (quint16)blockData.toHex().toUInt(0, 16);
m_blockNumber = (int)(block & 0xff0) >> 4;
m_blockSize = (int) pow(2, (block & 0x07) + 4);
m_moreFlag = (bool)((block & 0x08) >> 3);
}
}
QByteArray CoapPduBlock::createBlock(const int &blockNumber, const int &blockSize, const bool &moreFlag)
{
QByteArray blockData;
if (blockNumber < 16) {
quint8 block = (quint8)blockSize;
block |= (quint8)moreFlag << 3;
block |= (quint8)blockNumber << 4;
blockData = QByteArray(1, (char)block);
} else {
quint16 block = (quint16)blockSize;
block |= (quint16)moreFlag << 3;
block |= (quint8)blockNumber << 4;
blockData.resize(2);
blockData.fill(0);
blockData[0] = (quint8)(block >> 8);
blockData[1] = (quint8)(block & 0xff);
}
return blockData;
}
int CoapPduBlock::blockNumber() const
{
return m_blockNumber;
}
int CoapPduBlock::blockSize() const
{
return m_blockSize;
}
bool CoapPduBlock::moreFlag() const
{
return m_moreFlag;
}