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Code Issues Releases Activity

Return error for sector headers

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This commit is contained in:
Romein van Buren
2025-06-13 12:19:40 +02:00
parent 2748bd9427
commit 7daac38a79
2 changed files with 5 additions and 0 deletions
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1
fmp/fmp_const.go
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@ -11,6 +11,7 @@ var (
ErrBadHeader = FmpError("bad header") ErrBadHeader = FmpError("bad header")
ErrUnsupportedCharset = FmpError("unsupported character set") ErrUnsupportedCharset = FmpError("unsupported character set")
ErrBadSectorCount = FmpError("bad sector count") ErrBadSectorCount = FmpError("bad sector count")
ErrBadSectorHeader = FmpError("bad sector header")
) )
const ( const (

4
fmp/fmp_file.go
View File

@ -147,6 +147,10 @@ func (ctx *FmpFile) readSector() (*FmpSector, error) {
NextID: parseVarUint64(buf[8 : 8+4]), NextID: parseVarUint64(buf[8 : 8+4]),
} }
if ctx.currentSectorID == 0 && sector.PrevID > 0 {
return nil, ErrBadSectorHeader
}
payload := make([]byte, sectorPayloadSize) payload := make([]byte, sectorPayloadSize)
n, err = ctx.stream.Read(payload) n, err = ctx.stream.Read(payload)