feat: add vendor

vendor/github.com/dnstap/golang-dnstap/YamlFormat.go

@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2013-2014 by Farsight Security, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dnstap
+
+import (
+	"bytes"
+	"fmt"
+	"net"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/miekg/dns"
+)
+
+const yamlTimeFormat = "2006-01-02 15:04:05.999999999"
+
+func yamlConvertMessage(m *Message, s *bytes.Buffer) {
+	s.WriteString(fmt.Sprint("  type: ", m.Type, "\n"))
+
+	if m.QueryTimeSec != nil && m.QueryTimeNsec != nil {
+		t := time.Unix(int64(*m.QueryTimeSec), int64(*m.QueryTimeNsec)).UTC()
+		s.WriteString(fmt.Sprint("  query_time: !!timestamp ", t.Format(yamlTimeFormat), "\n"))
+	}
+
+	if m.ResponseTimeSec != nil && m.ResponseTimeNsec != nil {
+		t := time.Unix(int64(*m.ResponseTimeSec), int64(*m.ResponseTimeNsec)).UTC()
+		s.WriteString(fmt.Sprint("  response_time: !!timestamp ", t.Format(yamlTimeFormat), "\n"))
+	}
+
+	if m.SocketFamily != nil {
+		s.WriteString(fmt.Sprint("  socket_family: ", m.SocketFamily, "\n"))
+	}
+
+	if m.SocketProtocol != nil {
+		s.WriteString(fmt.Sprint("  socket_protocol: ", m.SocketProtocol, "\n"))
+	}
+
+	if m.QueryAddress != nil {
+		s.WriteString(fmt.Sprint("  query_address: ", net.IP(m.QueryAddress), "\n"))
+	}
+
+	if m.ResponseAddress != nil {
+		s.WriteString(fmt.Sprint("  response_address: ", net.IP(m.ResponseAddress), "\n"))
+	}
+
+	if m.QueryPort != nil {
+		s.WriteString(fmt.Sprint("  query_port: ", *m.QueryPort, "\n"))
+	}
+
+	if m.ResponsePort != nil {
+		s.WriteString(fmt.Sprint("  response_port: ", *m.ResponsePort, "\n"))
+	}
+
+	if m.QueryZone != nil {
+		name, _, err := dns.UnpackDomainName(m.QueryZone, 0)
+		if err != nil {
+			fmt.Fprintf(s, "  # query_zone: parse failed: %v\n", err)
+		} else {
+			s.WriteString(fmt.Sprint("  query_zone: ", strconv.Quote(name), "\n"))
+		}
+	}
+
+	if m.QueryMessage != nil {
+		msg := new(dns.Msg)
+		err := msg.Unpack(m.QueryMessage)
+		if err != nil {
+			fmt.Fprintf(s, "  # query_message: parse failed: %v\n", err)
+		} else {
+			s.WriteString("  query_message: |\n")
+			s.WriteString("    " + strings.Replace(strings.TrimSpace(msg.String()), "\n", "\n    ", -1) + "\n")
+		}
+	}
+	if m.ResponseMessage != nil {
+		msg := new(dns.Msg)
+		err := msg.Unpack(m.ResponseMessage)
+		if err != nil {
+			fmt.Fprintf(s, "  # response_message: parse failed: %v\n", err)
+		} else {
+			s.WriteString("  response_message: |\n")
+			s.WriteString("    " + strings.Replace(strings.TrimSpace(msg.String()), "\n", "\n    ", -1) + "\n")
+		}
+	}
+	s.WriteString("---\n")
+}
+
+// YamlFormat renders a dnstap message in YAML format. Any encapsulated DNS
+// messages are rendered as strings in a format similar to 'dig' output.
+func YamlFormat(dt *Dnstap) (out []byte, ok bool) {
+	var s bytes.Buffer
+
+	s.WriteString(fmt.Sprint("type: ", dt.Type, "\n"))
+	if dt.Identity != nil {
+		s.WriteString(fmt.Sprint("identity: ", strconv.Quote(string(dt.Identity)), "\n"))
+	}
+	if dt.Version != nil {
+		s.WriteString(fmt.Sprint("version: ", strconv.Quote(string(dt.Version)), "\n"))
+	}
+	if *dt.Type == Dnstap_MESSAGE {
+		s.WriteString("message:\n")
+		yamlConvertMessage(dt.Message, &s)
+	}
+	return s.Bytes(), true
+}