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/*
* Copyright (c) 2007, Technische Universitaet Berlin
* 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 Technische Universitaet Berlin 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 OR CONTRIBUTORS 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.
*/
/**
* @author Philipp Huppertz <huppertz@tkn.tu-berlin.de>
*/
#include "sfpacket.h"
#include <cstring>
SFPacket::SFPacket(int pType, int pSeqno) {
length = 0;
seqno = pSeqno;
type = pType;
}
// copy constructor
SFPacket::SFPacket(const SFPacket &pPacket) {
length = pPacket.getLength();
type = pPacket.getType();
seqno = pPacket.getSeqno();
setPayload(pPacket.getPayload(), length);
}
SFPacket::~SFPacket()
{
// if (buffer) delete[] buffer;
}
const char* SFPacket::getPayload() const
{
if(((type == SF_PACKET_ACK) || (type == SF_PACKET_NO_ACK))) {
return buffer + 1;
}
else {
return NULL;
}
}
int SFPacket::getLength() const {
return length;
}
int SFPacket::getType() const
{
return type;
}
int SFPacket::getSeqno() const
{
return seqno;
}
bool SFPacket::setPayload(const char* pBuffer, uint8_t pLength)
{
if ((pLength > 0) && (pLength < cMaxPacketLength) && ((type == SF_PACKET_ACK) || (type == SF_PACKET_NO_ACK)))
{
length = pLength;
memcpy(buffer + 1, pBuffer, pLength);
return true;
}
DEBUG("SFPACKET::setPayload : wrong packet length = " << static_cast<int>(pLength) << " or type = " << type)
return false;
}
void SFPacket::setSeqno(int pSeqno)
{
seqno = pSeqno;
}
void SFPacket::setType(int pType)
{
type = pType;
}
int const SFPacket::getMaxPayloadLength()
{
return cMaxPacketLength;
}
/* == operator */
bool SFPacket::operator==(SFPacket const& pPacket)
{
bool retval=false;
if((pPacket.getType() == type) && (pPacket.getLength() == length) && (pPacket.getSeqno() == seqno)) {
if((type == SF_PACKET_ACK) || (type == SF_PACKET_NO_ACK)) {
retval = (memcmp(pPacket.getPayload(), getPayload(), length) == 0);
}
}
return retval;
}
/* return the length that shall be transmitted via TCP */
int SFPacket::getTcpLength() const {
return length + 1;
}
/* return the payload of the TCP packet */
const char* SFPacket::getTcpPayload() {
char l = length;
buffer[0] = l;
return buffer;
}
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