39 lines
1.5 KiB
C++
39 lines
1.5 KiB
C++
#include "AckPduDeserializer.h"
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AckPduDeserializer::AckPduDeserializer(const uint8_t *pduBuf, size_t maxSize, AckInfo& info):
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FileDirectiveDeserializer(pduBuf, maxSize), info(info) {
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}
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ReturnValue_t AckPduDeserializer::parseData() {
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ReturnValue_t result = FileDirectiveDeserializer::parseData();
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if(result != HasReturnvaluesIF::RETURN_OK) {
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return result;
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}
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size_t currentIdx = FileDirectiveDeserializer::getHeaderSize();
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if (currentIdx + 2 > this->maxSize) {
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return SerializeIF::BUFFER_TOO_SHORT;
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}
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if(not checkAndSetCodes(rawPtr[currentIdx], rawPtr[currentIdx + 1])) {
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return cfdp::INVALID_ACK_DIRECTIVE_FIELDS;
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}
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return HasReturnvaluesIF::RETURN_OK;
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}
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bool AckPduDeserializer::checkAndSetCodes(uint8_t firstByte, uint8_t secondByte) {
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uint8_t ackedDirective = static_cast<cfdp::FileDirectives>(firstByte >> 4);
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if(ackedDirective != cfdp::FileDirectives::EOF_DIRECTIVE and
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ackedDirective != cfdp::FileDirectives::FINISH) {
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return false;
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}
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this->info.setAckedDirective(static_cast<cfdp::FileDirectives>(ackedDirective));
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uint8_t directiveSubtypeCode = firstByte & 0x0f;
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if(directiveSubtypeCode != 0b0000 and directiveSubtypeCode != 0b0001) {
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return false;
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}
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this->info.setDirectiveSubtypeCode(directiveSubtypeCode);
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this->info.setAckedConditionCode(static_cast<cfdp::ConditionCode>(secondByte >> 4));
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this->info.setTransactionStatus(static_cast<cfdp::AckTransactionStatus>(secondByte & 0x0f));
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return true;
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}
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