59 lines
2.1 KiB
C++
59 lines
2.1 KiB
C++
#include "NakPduDeserializer.h"
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NakPduDeserializer::NakPduDeserializer(const uint8_t *pduBuf, size_t maxSize, NakInfo &info):
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FileDirectiveDeserializer(pduBuf, maxSize), nakInfo(info) {
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}
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ReturnValue_t NakPduDeserializer::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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const uint8_t* buffer = rawPtr + currentIdx;
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size_t remSize = FileDirectiveDeserializer::getWholePduSize() - currentIdx;
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if (remSize < 1) {
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return SerializeIF::STREAM_TOO_SHORT;
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}
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result = nakInfo.getStartOfScope().deSerialize(&buffer, &remSize,
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SerializeIF::Endianness::NETWORK);
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if(result != HasReturnvaluesIF::RETURN_OK) {
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return result;
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}
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result = nakInfo.getEndOfScope().deSerialize(&buffer, &remSize,
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SerializeIF::Endianness::NETWORK);
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if(result != HasReturnvaluesIF::RETURN_OK) {
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return result;
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}
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nakInfo.setSegmentRequestLen(0);
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if(remSize > 0) {
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if(not nakInfo.canHoldSegmentRequests()) {
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return cfdp::NAK_CANT_PARSE_OPTIONS;
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}
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NakInfo::SegmentRequest* segReqs = nullptr;
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size_t maxSegReqs = 0;
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nakInfo.getSegmentRequests(&segReqs, nullptr, &maxSegReqs);
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if(segReqs != nullptr) {
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size_t idx = 0;
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while(remSize > 0) {
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if(idx == maxSegReqs) {
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return cfdp::NAK_CANT_PARSE_OPTIONS;
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}
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result = segReqs[idx].first.deSerialize(&buffer, &remSize,
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SerializeIF::Endianness::NETWORK);
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if(result != HasReturnvaluesIF::RETURN_OK) {
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return result;
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}
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result = segReqs[idx].second.deSerialize(&buffer, &remSize,
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SerializeIF::Endianness::NETWORK);
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if(result != HasReturnvaluesIF::RETURN_OK) {
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return result;
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}
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idx++;
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}
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nakInfo.setSegmentRequestLen(idx);
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}
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}
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return result;
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}
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