RFC5780

Makefile

@@ -35,3 +35,8 @@ tag:
 	git tag -a "${TAG}" -m "${TAG}"
 	git push origin "${TAG}"
 
+.PHONY: windows
+windows:
+	GOOS=windows GOARCH=amd64 go fmt ./...
+	GOOS=windows GOARCH=amd64 go vet ./...
+	GOOS=windows GOARCH=amd64 go build

internal/cmd/info.go

@@ -124,8 +124,18 @@ func printAttributes(opts InfoOpts, attr []internal.Attribute) {
 			headerPrinted = true
 		}
 
-		humanName := internal.AttributeTypeString(a.Type)
 		value := string(a.Value)
+		// checks for old RFC5780 but still implemented (for example in coturn)
+		if a.Type == internal.AttrResponseOrigin || a.Type == internal.AttrOtherAddress {
+			tmpIP, tmpPort, err := internal.ParseMappedAdress(a.Value)
+			if err != nil {
+				opts.Log.Errorf("could not parse mapped address: %02x %v", a.Value, err)
+				continue
+			}
+			value = fmt.Sprintf("%s:%d", tmpIP.String(), tmpPort)
+		}
+
+		humanName := internal.AttributeTypeString(a.Type)
 		if humanName == "" {
 			if helper.IsPrintable(value) {
 				opts.Log.Warnf("\tNon Standard Attribute %d returned with value %s", uint16(a.Type), value)

internal/helpers_turn.go

@@ -72,6 +72,24 @@ func xorAddr(ip netip.Addr, port uint16, transactionID []byte) ([]byte, error) {
 	return buf, nil
 }
 
+func ParseMappedAdress(input []byte) (*netip.Addr, uint16, error) {
+	if len(input) < 5 {
+		return nil, 0, fmt.Errorf("invalid buffer length %d, need to be > 4", len(input))
+	}
+	family := input[0:2] // 0x0001 = ipv4, 0x0002 = ipv6
+	if !bytes.Equal(family, []byte{00, 01}) && !bytes.Equal(family, []byte{00, 02}) {
+		return nil, 0, fmt.Errorf("invalid family %02x", family)
+	}
+	portRaw := input[2:4]
+	payload := input[4:]
+	portInt := binary.BigEndian.Uint16(portRaw)
+	ip, ok := netip.AddrFromSlice(payload)
+	if !ok {
+		return nil, 0, fmt.Errorf("invalid IP %02x", payload)
+	}
+	return &ip, portInt, nil
+}
+
 func ConvertXORAddr(input []byte, transactionID string) (string, uint16, error) {
 	if len(input) < 5 {
 		return "", 0, fmt.Errorf("invalid buffer length %d, need to be > 4", len(input))

internal/types_stun.go

@@ -265,6 +265,13 @@ const (
 	AttrAlternateServer AttributeType = 0x8023
 	// AttrFingerprint https://tools.ietf.org/html/rfc5389#section-15.5
 	AttrFingerprint AttributeType = 0x8028
+
+	// old RFC5780 https://www.rfc-editor.org/rfc/rfc5780#section-7
+	AttrChangeRequest  AttributeType = 0x0003
+	AttrPadding        AttributeType = 0x0026
+	AttrResponsePort   AttributeType = 0x0027
+	AttrResponseOrigin AttributeType = 0x802b
+	AttrOtherAddress   AttributeType = 0x802c
 )
 
 var attrNames = map[AttributeType]string{
@@ -280,6 +287,11 @@ var attrNames = map[AttributeType]string{
 	AttrSoftware:               "SOFTWARE",
 	AttrAlternateServer:        "ALTERNATE-SERVER",
 	AttrFingerprint:            "FINGERPRINT",
+	AttrChangeRequest:          "CHANGE-REQUEST",
+	AttrPadding:                "PADDING",
+	AttrResponsePort:           "RESPONSE-PORT",
+	AttrResponseOrigin:         "RESPONSE-ORIGIN",
+	AttrOtherAddress:           "OTHER-ADDRESS",
 }
 
 /*