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Handle multiple ELAM events (#309)

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Brandon Weeks 2023-03-08 13:32:50 -08:00 committed by GitHub
parent 68deb4ce55
commit 0ccbb50494
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1 changed files with 6 additions and 1 deletions
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7
attest/win_events.go
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@ -678,7 +678,7 @@ func (w *WinEvents) parseUTF16(header microsoftEventHeader, r io.Reader) (string
return strings.TrimSuffix(string(utf16.Decode(data)), "\x00"), nil return strings.TrimSuffix(string(utf16.Decode(data)), "\x00"), nil
} }
func (w *WinEvents) readELAMAggregation(rdr *bytes.Reader, header microsoftEventHeader) error { func (w *WinEvents) readELAMAggregation(rdr io.Reader, header microsoftEventHeader) error {
var ( var (
r = &io.LimitedReader{R: rdr, N: int64(header.Size)} r = &io.LimitedReader{R: rdr, N: int64(header.Size)}
driverName string driverName string
@ -698,6 +698,11 @@ func (w *WinEvents) readELAMAggregation(rdr *bytes.Reader, header microsoftEvent
var err error var err error
switch h.Type { switch h.Type {
case elamAggregation:
w.readELAMAggregation(r, h)
if r.N == 0 {
return nil
}
case elamKeyname: case elamKeyname:
if driverName != "" { if driverName != "" {
return errors.New("duplicate driver name in ELAM aggregation event") return errors.New("duplicate driver name in ELAM aggregation event")