Use proper section names when producing dig-like output for UPDATEs (#…

…1479)

msg.go

@@ -896,31 +896,50 @@ func (dns *Msg) String() string {
 		return "<nil> MsgHdr"
 	}
 	s := dns.MsgHdr.String() + " "
-	s += "QUERY: " + strconv.Itoa(len(dns.Question)) + ", "
-	s += "ANSWER: " + strconv.Itoa(len(dns.Answer)) + ", "
-	s += "AUTHORITY: " + strconv.Itoa(len(dns.Ns)) + ", "
-	s += "ADDITIONAL: " + strconv.Itoa(len(dns.Extra)) + "\n"
+	if dns.MsgHdr.Opcode == OpcodeUpdate {
+		s += "ZONE: " + strconv.Itoa(len(dns.Question)) + ", "
+		s += "PREREQ: " + strconv.Itoa(len(dns.Answer)) + ", "
+		s += "UPDATE: " + strconv.Itoa(len(dns.Ns)) + ", "
+		s += "ADDITIONAL: " + strconv.Itoa(len(dns.Extra)) + "\n"
+	} else {
+		s += "QUERY: " + strconv.Itoa(len(dns.Question)) + ", "
+		s += "ANSWER: " + strconv.Itoa(len(dns.Answer)) + ", "
+		s += "AUTHORITY: " + strconv.Itoa(len(dns.Ns)) + ", "
+		s += "ADDITIONAL: " + strconv.Itoa(len(dns.Extra)) + "\n"
+	}
 	opt := dns.IsEdns0()
 	if opt != nil {
 		// OPT PSEUDOSECTION
 		s += opt.String() + "\n"
 	}
 	if len(dns.Question) > 0 {
-		s += "\n;; QUESTION SECTION:\n"
+		if dns.MsgHdr.Opcode == OpcodeUpdate {
+			s += "\n;; ZONE SECTION:\n"
+		} else {
+			s += "\n;; QUESTION SECTION:\n"
+		}
 		for _, r := range dns.Question {
 			s += r.String() + "\n"
 		}
 	}
 	if len(dns.Answer) > 0 {
-		s += "\n;; ANSWER SECTION:\n"
+		if dns.MsgHdr.Opcode == OpcodeUpdate {
+			s += "\n;; PREREQUISITE SECTION:\n"
+		} else {
+			s += "\n;; ANSWER SECTION:\n"
+		}
 		for _, r := range dns.Answer {
 			if r != nil {
 				s += r.String() + "\n"
 			}
 		}
 	}
 	if len(dns.Ns) > 0 {
-		s += "\n;; AUTHORITY SECTION:\n"
+		if dns.MsgHdr.Opcode == OpcodeUpdate {
+			s += "\n;; UPDATE SECTION:\n"
+		} else {
+			s += "\n;; AUTHORITY SECTION:\n"
+		}
 		for _, r := range dns.Ns {
 			if r != nil {
 				s += r.String() + "\n"

update_test.go

@@ -126,19 +126,19 @@ func TestPreReqAndRemovals(t *testing.T) {
 	// end and the Example function trim these, thus they never match.
 	// TODO(miek): don't print these tabs and make this into an Example function.
 	expect := `;; opcode: UPDATE, status: NOERROR, id: 1234
-;; flags:; QUERY: 1, ANSWER: 5, AUTHORITY: 4, ADDITIONAL: 0
+;; flags:; ZONE: 1, PREREQ: 5, UPDATE: 4, ADDITIONAL: 0
 
-;; QUESTION SECTION:
+;; ZONE SECTION:
 ;example.org.	IN	 SOA
 
-;; ANSWER SECTION:
+;; PREREQUISITE SECTION:
 name_used.	0	CLASS255	ANY	
 name_not_used.	0	NONE	ANY	
 rrset_used1.	0	CLASS255	A	
 rrset_used2.	0	IN	A	127.0.0.1
 rrset_not_used.	0	NONE	A	
 
-;; AUTHORITY SECTION:
+;; UPDATE SECTION:
 remove1.	0	CLASS255	ANY	
 remove2.	0	CLASS255	A	
 remove3.	0	NONE	A	127.0.0.1