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Fix QUIC sniffer

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世界 2023-11-16 22:47:20 +08:00
parent 72a81afb76
commit 6a2bfd26d0
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GPG key ID: CD109927C34A63C4
1 changed files with 63 additions and 4 deletions
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67
common/sniff/quic.go
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@ -182,11 +182,52 @@ func QUICClientHello(ctx context.Context, packet []byte) (*adapter.InboundContex
break
}
switch frameType {
case 0x0:
case 0x00: // PADDING
continue
case 0x1:
case 0x01: // PING
continue
case 0x6:
case 0x02, 0x03: // ACK
_, err = qtls.ReadUvarint(decryptedReader) // Largest Acknowledged
if err != nil {
return nil, err
}
_, err = qtls.ReadUvarint(decryptedReader) // ACK Delay
if err != nil {
return nil, err
}
ackRangeCount, err := qtls.ReadUvarint(decryptedReader) // ACK Range Count
if err != nil {
return nil, err
}
_, err = qtls.ReadUvarint(decryptedReader) // First ACK Range
if err != nil {
return nil, err
}
for i := 0; i < int(ackRangeCount); i++ {
_, err = qtls.ReadUvarint(decryptedReader) // Gap
if err != nil {
return nil, err
}
_, err = qtls.ReadUvarint(decryptedReader) // ACK Range Length
if err != nil {
return nil, err
}
}
if frameType == 0x03 {
_, err = qtls.ReadUvarint(decryptedReader) // ECT0 Count
if err != nil {
return nil, err
}
_, err = qtls.ReadUvarint(decryptedReader) // ECT1 Count
if err != nil {
return nil, err
}
_, err = qtls.ReadUvarint(decryptedReader) // ECN-CE Count
if err != nil {
return nil, err
}
}
case 0x06: // CRYPTO
var offset uint64
offset, err = qtls.ReadUvarint(decryptedReader)
if err != nil {
@ -208,8 +249,26 @@ func QUICClientHello(ctx context.Context, packet []byte) (*adapter.InboundContex
if err != nil {
return nil, err
}
case 0x1c: // CONNECTION_CLOSE
_, err = qtls.ReadUvarint(decryptedReader) // Error Code
if err != nil {
return nil, err
}
_, err = qtls.ReadUvarint(decryptedReader) // Frame Type
if err != nil {
return nil, err
}
var length uint64
length, err = qtls.ReadUvarint(decryptedReader) // Reason Phrase Length
if err != nil {
return nil, err
}
_, err = decryptedReader.Seek(int64(length), io.SeekCurrent) // Reason Phrase
if err != nil {
return nil, err
}
default:
// ignore unknown frame type
return nil, os.ErrInvalid
}
}
tlsHdr := make([]byte, 5)