Fuzz RTCM3 frame validation - #580
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Summary
Adds a fuzz target for the
rtcmpackage'sParseFrameentry point, which validates RTCM3 frame framing (preamble, 10-bit payload length) and CRC-24Q.ParseFrameis the core validator invoked by bothScannerandMixedScanner, the incremental scannerscmd/ntripperuses to ingest untrusted GNSS correction data from a socket.The
rtcmpackage is the one network-facing binary parser without fuzz coverage; this matches the repo's existing OSS-Fuzz targets (ntp/protocolFuzzBytesToPacket,ptp/protocolFuzzDecodePacket,ntp/chronyFuzzDecodePacket,ntp/controlFuzzNormalizeData,leaphashFuzzCompute,leapsectzFuzzParse,fbclock/daemonFuzzPrepareExpression).Verification
go test ./rtcm/passes (all existing tests)go vet ./rtcm/cleango test -fuzz FuzzParseFrame -fuzztime=5s— 460k execs across 24 workers, 0 crashesType
tests