Fix tsig -- needs testing

TODO

@@ -10,11 +10,12 @@ Short term:
 
 Issues:
 * Separation between dnssec and dns is arbitrary, why is tsig.go of package dns?
+* escaped dots in domain names: \.
+* quoted quotes in txt records
 * Better sized buffers
 * Check the network order, it works now, but this is on Intel
 * Make the testsuite work with public DNS servers
 * shortened ipv6 addresses are not parsed correctly (maybe net issue)
-* quoted quotes in txt records
 * Convenience functions?
     - for new(RR*)
     - nsupdate

dnssec.go

@@ -1,5 +1,3 @@
-// Package dnssec implements all client side DNSSEC function, like
-// validation, keytag and DS calculation. 
 package dns
 
 import (
@@ -81,7 +79,6 @@ func (k *RR_DNSKEY) ToDS(h int) *RR_DS {
 	if !ok {
 		return nil
 	}
-
 	owner, ok1 := WireDomainName(k.Hdr.Name)
 	if !ok1 {
 		return nil
@@ -113,6 +110,11 @@ func (k *RR_DNSKEY) ToDS(h int) *RR_DS {
 	return ds
 }
 
+// Generate the key material and return the private key part. Only
+// the key's algorithm field needs to be known
+func (k *RR_DNSKEY) Generate() *RR_DS {
+
+}
 
 // Validate an rrset with the signature and key. This is the
 // cryptographic test, the validity period most be check separately.

tsig.go

@@ -6,7 +6,9 @@ package dns
 import (
 	"crypto/hmac"
 	"strconv"
+	"strings"
 	"io"
+	"encoding/hex"
 )
 
 // Need to lookup the actual codes
@@ -17,7 +19,7 @@ const (
 
 type RR_TSIG struct {
 	Hdr        RR_Header
-	Algorithm  string   "domain-name"
+	Algorithm  string "domain-name"
 	TimeSigned uint64
 	Fudge      uint16
 	MACSize    uint16
@@ -33,12 +35,12 @@ func (rr *RR_TSIG) Header() *RR_Header {
 }
 
 func (rr *RR_TSIG) String() string {
-	// It has no presentation format
+	// It has no official presentation format
 	return rr.Hdr.String() +
 		" " + rr.Algorithm +
-		" " + "<timesigned>" +
+		" " + tsigTimeToDate(rr.TimeSigned) +
 		" " + strconv.Itoa(int(rr.Fudge)) +
-		" " + "<MAC>" +
+		" " + strings.ToUpper(hex.EncodeToString([]byte(rr.MAC))) +
 		" " + strconv.Itoa(int(rr.OrigId)) +
 		" " + strconv.Itoa(int(rr.Error)) +
 		" " + rr.OtherData
@@ -53,7 +55,7 @@ type tsig_generation_fmt struct {
 	Class uint16
 	Ttl   uint32
 	// Rdata of the TSIG
-	Algorithm  string   "domain-name"
+	Algorithm  string "domain-name"
 	TimeSigned uint64
 	Fudge      uint16
 	// MACSize, MAC and OrigId excluded

tsig_test.go

@@ -3,6 +3,7 @@ package dns
 import (
 	"testing"
         "fmt"
+	"time"
 )
 
 func TestTsig(t *testing.T) {
@@ -11,6 +12,8 @@ func TestTsig(t *testing.T) {
 	tsig.Hdr.Rrtype = TypeTSIG
 	tsig.Hdr.Class = ClassANY
 	tsig.Hdr.Ttl = 0
+	tsig.Fudge = 300
+	tsig.TimeSigned = uint64(time.Seconds())
 
         out := new(Msg)
         out.MsgHdr.RecursionDesired = true

types.go

@@ -538,8 +538,9 @@ func timeToDate(t uint32) string {
 // Translate the TSIG time signed into a date. There is no
 // need for RFC1982 calculations as this date is 48 bits
 func tsigTimeToDate(t uint64) string {
-	// only use the lower 48 bits
-	return "TODO"
+	// only use the lower 48 bits, TODO(mg), check for 48 bit size
+	ti := time.SecondsToUTC(int64(t))
+	return ti.Format("20060102030405")
 }
 
 // Map of constructors for each RR wire type.