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Fix DNS sniffer

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世界 2025-03-31 20:44:46 +08:00
parent 47fc3ebda4
commit f4c29840c3
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GPG key ID: CD109927C34A63C4
2 changed files with 23 additions and 4 deletions
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4
common/sniff/dns.go
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@ -11,7 +11,6 @@ import (
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing/common"
"github.com/sagernet/sing/common/buf"
M "github.com/sagernet/sing/common/metadata"
"github.com/sagernet/sing/common/task"
mDNS "github.com/miekg/dns"
@ -47,9 +46,6 @@ func DomainNameQuery(ctx context.Context, metadata *adapter.InboundContext, pack
if err != nil {
return err
}
if len(msg.Question) == 0 || msg.Question[0].Qclass != mDNS.ClassINET || !M.IsDomainName(msg.Question[0].Name) {
return os.ErrInvalid
}
metadata.Protocol = C.ProtocolDNS
return nil
}

23
common/sniff/dns_test.go Normal file
View file

@ -0,0 +1,23 @@
package sniff_test
import (
"context"
"encoding/hex"
"testing"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/common/sniff"
C "github.com/sagernet/sing-box/constant"
"github.com/stretchr/testify/require"
)
func TestSniffDNS(t *testing.T) {
t.Parallel()
query, err := hex.DecodeString("740701000001000000000000012a06676f6f676c6503636f6d0000010001")
require.NoError(t, err)
var metadata adapter.InboundContext
err = sniff.DomainNameQuery(context.TODO(), &metadata, query)
require.NoError(t, err)
require.Equal(t, C.ProtocolDNS, metadata.Protocol)
}