fsfw/tcdistribution/TcPacketCheck.cpp

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#include "TcPacketCheck.h"
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#include "../globalfunctions/CRC.h"
#include "../serviceinterface/ServiceInterfaceStream.h"
#include "../storagemanager/StorageManagerIF.h"
#include "../tmtcservices/VerificationCodes.h"
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TcPacketCheck::TcPacketCheck( uint16_t setApid ) : apid(setApid) {
}
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ReturnValue_t TcPacketCheck::checkPacket( TcPacketStored* currentPacket ) {
uint16_t calculated_crc = CRC::crc16ccitt( currentPacket->getWholeData(),
currentPacket->getFullSize() );
if ( calculated_crc != 0 ) {
return INCORRECT_CHECKSUM;
}
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bool condition = (not currentPacket->hasSecondaryHeader()) or
(currentPacket->getPacketVersionNumber() != CCSDS_VERSION_NUMBER) or
(not currentPacket->isTelecommand());
if ( condition ) {
return INCORRECT_PRIMARY_HEADER;
}
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if ( currentPacket->getAPID() != this->apid )
return ILLEGAL_APID;
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if ( not currentPacket->isSizeCorrect() ) {
return INCOMPLETE_PACKET;
}
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condition = (currentPacket->getSecondaryHeaderFlag() != CCSDS_SECONDARY_HEADER_FLAG) ||
(currentPacket->getPusVersionNumber() != PUS_VERSION_NUMBER);
if ( condition ) {
return INCORRECT_SECONDARY_HEADER;
}
return RETURN_OK;
}
uint16_t TcPacketCheck::getApid() const {
return apid;
}