47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
#include "TcPacketCheck.h"
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#include "../globalfunctions/CRC.h"
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#include "../tmtcpacket/pus/tc/TcPacketBase.h"
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#include "../tmtcpacket/pus/tc/TcPacketStoredBase.h"
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#include "../serviceinterface/ServiceInterface.h"
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#include "../storagemanager/StorageManagerIF.h"
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#include "../tmtcservices/VerificationCodes.h"
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TcPacketCheck::TcPacketCheck(uint16_t setApid): apid(setApid) {
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}
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ReturnValue_t TcPacketCheck::checkPacket(TcPacketStoredBase* currentPacket) {
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TcPacketBase* tcPacketBase = currentPacket->getPacketBase();
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if(tcPacketBase == nullptr) {
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return RETURN_FAILED;
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}
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uint16_t calculated_crc = CRC::crc16ccitt(tcPacketBase->getWholeData(),
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tcPacketBase->getFullSize());
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if (calculated_crc != 0) {
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return INCORRECT_CHECKSUM;
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}
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bool condition = (not tcPacketBase->hasSecondaryHeader()) or
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(tcPacketBase->getPacketVersionNumber() != CCSDS_VERSION_NUMBER) or
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(not tcPacketBase->isTelecommand());
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if (condition) {
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return INCORRECT_PRIMARY_HEADER;
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}
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if (tcPacketBase->getAPID() != this->apid)
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return ILLEGAL_APID;
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if (not currentPacket->isSizeCorrect()) {
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return INCOMPLETE_PACKET;
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}
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condition = (tcPacketBase->getSecondaryHeaderFlag() != CCSDS_SECONDARY_HEADER_FLAG) ||
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(tcPacketBase->getPusVersionNumber() != PUS_VERSION_NUMBER);
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if (condition) {
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return INCORRECT_SECONDARY_HEADER;
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}
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return RETURN_OK;
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}
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uint16_t TcPacketCheck::getApid() const {
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return apid;
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}
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