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CFDP bugfix

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Robin Müller 2023-05-25 15:11:56 +02:00
parent 4518fec65c
commit 9fe8579377
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GPG Key ID: 11D4952C8CCEF814
7 changed files with 18 additions and 15 deletions
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3
CHANGELOG.md
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@ -10,6 +10,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
## Fixes
- Important bugfix in CFDP PDU header format: The entity length field and the transaction sequence
number fields stored the actual length of the field instead of the length minus 1 like specified
in the CFDP standard.
- PUS Health Service: Size check for set health command.
Perform operation completion for announce health command.
https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/746

4
src/fsfw/cfdp/pdu/HeaderCreator.cpp
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@ -24,8 +24,8 @@ ReturnValue_t HeaderCreator::serialize(uint8_t **buffer, size_t *size, size_t ma
*buffer += 1;
**buffer = pduDataFieldLen & 0x00ff;
*buffer += 1;
**buffer = segmentationCtrl << 7 | pduConf.sourceId.getWidth() << 4 | segmentMetadataFlag << 3 |
pduConf.seqNum.getWidth();
**buffer = segmentationCtrl << 7 | ((pduConf.sourceId.getWidth() - 1) << 4) |
segmentMetadataFlag << 3 | (pduConf.seqNum.getWidth() - 1);
*buffer += 1;
*size += 4;
ReturnValue_t result = pduConf.sourceId.serialize(buffer, size, maxSize, streamEndianness);

4
src/fsfw/cfdp/pdu/HeaderReader.cpp
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@ -78,11 +78,11 @@ cfdp::SegmentationControl PduHeaderReader::getSegmentationControl() const {
}
cfdp::WidthInBytes PduHeaderReader::getLenEntityIds() const {
return static_cast<cfdp::WidthInBytes>((pointers.fixedHeader->fourthByte >> 4) & 0x07);
return static_cast<cfdp::WidthInBytes>(((pointers.fixedHeader->fourthByte >> 4) & 0b111) + 1);
}
cfdp::WidthInBytes PduHeaderReader::getLenSeqNum() const {
return static_cast<cfdp::WidthInBytes>(pointers.fixedHeader->fourthByte & 0x07);
return static_cast<cfdp::WidthInBytes>((pointers.fixedHeader->fourthByte & 0b111) + 1);
}
cfdp::SegmentMetadataFlag PduHeaderReader::getSegmentMetadataFlag() const {

10
unittests/cfdp/pdu/testCfdpHeader.cpp
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@ -97,7 +97,7 @@ TEST_CASE("CFDP Header", "[cfdp]") {
REQUIRE(creator.serialize(&serTarget, &serSize, serBuf.size(),
SerializeIF::Endianness::BIG) == returnvalue::OK);
CHECK(serBuf[0] == 0x3f);
CHECK(serBuf[3] == 0x99);
CHECK(serBuf[3] == 0x88);
REQUIRE(creator.getCrcFlag() == true);
REQUIRE(creator.getDirection() == cfdp::Direction::TOWARDS_SENDER);
REQUIRE(creator.getLargeFileFlag() == true);
@ -127,7 +127,7 @@ TEST_CASE("CFDP Header", "[cfdp]") {
REQUIRE(creator.getTransmissionMode() == cfdp::TransmissionMode::UNACKNOWLEDGED);
REQUIRE(creator.getSegmentationControl() == true);
// Last three bits are 2 now (length of seq number) and bit 1 to bit 3 is 4 (len entity IDs)
REQUIRE(serBuf[3] == 0b11001010);
REQUIRE(serBuf[3] == 0b10111001);
uint32_t entityId = 0;
size_t deSerSize = 0;
SerializeAdapter::deSerialize(&entityId, serBuf.data() + 4, &deSerSize,
@ -175,7 +175,7 @@ TEST_CASE("CFDP Header", "[cfdp]") {
REQUIRE(serBuf[1] == 0);
REQUIRE(serBuf[2] == 0);
// Entity and Transaction Sequence number are 1 byte large
REQUIRE(serBuf[3] == 0b00010001);
REQUIRE(serBuf[3] == 0b00000000);
// Source ID
REQUIRE(serBuf[4] == 0);
// Transaction Seq Number
@ -220,7 +220,7 @@ TEST_CASE("CFDP Header", "[cfdp]") {
REQUIRE(serBuf[1] == 0);
REQUIRE(serBuf[2] == 0);
// Entity and Transaction Sequence number are 1 byte large
REQUIRE(serBuf[3] == 0b00010001);
REQUIRE(serBuf[3] == 0b00000000);
REQUIRE(serSize == 7);
// Deser call not strictly necessary
auto reader = PduHeaderReader(serBuf.data(), serBuf.size());
@ -270,7 +270,7 @@ TEST_CASE("CFDP Header", "[cfdp]") {
REQUIRE(reader.parseData() == returnvalue::OK);
// Everything except version bit flipped to one now
REQUIRE(serBuf[0] == 0x3f);
REQUIRE(serBuf[3] == 0b11001010);
REQUIRE(serBuf[3] == 0b10111001);
REQUIRE(reader.getWholePduSize() == 14);
REQUIRE(reader.getCrcFlag() == true);

2
unittests/cfdp/pdu/testFileData.cpp
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@ -68,7 +68,7 @@ TEST_CASE("File Data PDU", "[cfdp][pdu]") {
// Bits 1 to 3 length of enitity IDs is 2
// Bit 4: Segment metadata flag is set
// Bit 5 to seven: length of transaction seq num is 2
REQUIRE(fileDataBuffer[3] == 0b10101010);
REQUIRE(fileDataBuffer[3] == 0b10011001);
REQUIRE((fileDataBuffer[10] >> 6) &
0b11 == cfdp::RecordContinuationState::CONTAINS_START_AND_END);
// Segment metadata length

2
unittests/cfdp/pdu/testFileDirective.cpp
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@ -30,7 +30,7 @@ TEST_CASE("CFDP File Directive", "[cfdp][pdu]") {
REQUIRE(serBuf[1] == 0);
REQUIRE(serBuf[2] == 5);
// Entity and Transaction Sequence number are 1 byte large
REQUIRE(serBuf[3] == 0b00010001);
REQUIRE(serBuf[3] == 0b00000000);
// Source ID
REQUIRE(serBuf[4] == 0);
// Transaction Seq Number

4
unittests/cfdp/testCfdp.cpp
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@ -33,8 +33,8 @@ TEST_CASE("CFDP Base", "[cfdp]") {
// PDU data field length is 5 (4 + Directive code octet)
REQUIRE(serBuf[1] == 0);
REQUIRE(serBuf[2] == 5);
// Entity and Transaction Sequence number are 1 byte large
REQUIRE(serBuf[3] == 0b00010001);
// Entity and Transaction Sequence number are 1 byte large, value minus one is stored
REQUIRE(serBuf[3] == 0b00000000);
// Source ID
REQUIRE(serBuf[4] == 0);
// Transaction Seq Number