Add rrset check function

TODO

@@ -2,6 +2,9 @@ Todo:
 * NSEC3 - need base32 for Nsec3
 * Cleanup the code
 * Tsig testing
+* Private key file parsing, exponent 65536 does not work
+
+Longer term:
 * Parsing from strings, going with goyacc and own lexer
 
 Issues:
@@ -17,4 +20,5 @@ Issues:
     - printing??
 * query-time, server in string ouput of resolver.Msg
    - resolver.Msg when doing resolver querying, extend msg...?
+   - also for the server?
 * Fix remaining records: LOC, NAPTR, ..., ...

dns.go

@@ -59,6 +59,19 @@ func (r RRset) Len() int           { return len(r) }
 func (r RRset) Less(i, j int) bool { return r[i].Header().Name < r[j].Header().Name }
 func (r RRset) Swap(i, j int)      { r[i], r[j] = r[j], r[i] }
 
+// Check if the RRset is 2181 compliant
+func (r RRset) Ok() bool {
+	ttl := r[0].Header().Ttl
+	name := r[0].Header().Name
+	class := r[0].Header().Class
+	for _, rr := range r[1:] {
+		if rr.Header().Ttl != ttl { return false }
+		if rr.Header().Name != name { return false }
+		if rr.Header().Class != class { return false }
+	}
+	return true
+}
+
 // DNS resource records.
 // There are many types of messages,
 // but they all share the same header.
@@ -93,8 +106,7 @@ func (h *RR_Header) String() string {
 	return s
 }
 
-// Return number of labels in a domain name
-// Make it fqdn?
+// Return the number of labels in a domain name
 func LabelCount(a string) (c uint8) {
 	for _, v := range a {
 		if v == '.' {

dnssec.go

@@ -395,6 +395,7 @@ func (s *RR_RRSIG) Verify(k *RR_DNSKEY, rrset RRset) bool {
 	return err == nil
 }
 
+// Beter name for this function
 // Using RFC1982 calculate if a signature period is valid
 func (s *RR_RRSIG) PeriodOK() bool {
 	utc := time.UTC().Seconds()

string.go

@@ -71,11 +71,3 @@ func SecondsToString(val uint32) (str string) {
         }
         return
 }
-
-// Read a string and convert it to the correct
-// Resource Record.
-func SetString(s string) RR {
-
-        k := new(RR_DNSKEY)
-        return k
-}