85 lines
2.4 KiB
Go
85 lines
2.4 KiB
Go
package dns
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import (
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"bytes"
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"testing"
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)
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func TestDynamicUpdateParsing(t *testing.T) {
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prefix := "example.com. IN "
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for _, typ := range TypeToString {
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if typ == "CAA" || typ == "OPT" || typ == "AXFR" || typ == "IXFR" || typ == "ANY" || typ == "TKEY" ||
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typ == "TSIG" || typ == "ISDN" || typ == "UNSPEC" || typ == "NULL" || typ == "ATMA" {
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continue
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}
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r, err := NewRR(prefix + typ)
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if err != nil {
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t.Errorf("failure to parse: %s %s: %v", prefix, typ, err)
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} else {
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t.Logf("parsed: %s", r.String())
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}
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}
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}
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func TestDynamicUpdateUnpack(t *testing.T) {
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// From https://github.com/miekg/dns/issues/150#issuecomment-62296803
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// It should be an update message for the zone "example.",
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// deleting the A RRset "example." and then adding an A record at "example.".
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// class ANY, TYPE A
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buf := []byte{171, 68, 40, 0, 0, 1, 0, 0, 0, 2, 0, 0, 7, 101, 120, 97, 109, 112, 108, 101, 0, 0, 6, 0, 1, 192, 12, 0, 1, 0, 255, 0, 0, 0, 0, 0, 0, 192, 12, 0, 1, 0, 1, 0, 0, 0, 0, 0, 4, 127, 0, 0, 1}
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msg := new(Msg)
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err := msg.Unpack(buf)
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if err != nil {
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t.Error("failed to unpack: %v\n%s", err, msg.String())
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}
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}
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func TestDynamicUpdateZeroRdataUnpack(t *testing.T) {
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m := new(Msg)
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rr := &RR_Header{Name: ".", Rrtype: 0, Class: 1, Ttl: ^uint32(0), Rdlength: 0}
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m.Answer = []RR{rr, rr, rr, rr, rr}
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m.Ns = m.Answer
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for n, s := range TypeToString {
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rr.Rrtype = n
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bytes, err := m.Pack()
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if err != nil {
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t.Errorf("failed to pack %s: %v", s, err)
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continue
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}
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if err := new(Msg).Unpack(bytes); err != nil {
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t.Errorf("failed to unpack %s: %v", s, err)
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}
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}
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}
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func TestRemoveRRset(t *testing.T) {
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// Should add a zero data RR in Class ANY with a TTL of 0
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// for each set mentioned in the RRs provided to it.
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rr, err := NewRR(". 100 IN A 127.0.0.1")
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if err != nil {
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t.Fatalf("Error constructing RR: %v", err)
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}
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m := new(Msg)
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m.Ns = []RR{&RR_Header{Name: ".", Rrtype: TypeA, Class: ClassANY, Ttl: 0, Rdlength: 0}}
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expectstr := m.String()
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expect, err := m.Pack()
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if err != nil {
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t.Fatalf("Error packing expected msg: %v", err)
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}
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m.Ns = nil
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m.RemoveRRset([]RR{rr})
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actual, err := m.Pack()
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if err != nil {
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t.Fatalf("Error packing actual msg: %v", err)
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}
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if !bytes.Equal(actual, expect) {
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tmp := new(Msg)
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if err := tmp.Unpack(actual); err != nil {
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t.Fatalf("Error unpacking actual msg: %v", err)
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}
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t.Errorf("Expected msg:\n%s", expectstr)
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t.Errorf("Actual msg:\n%v", tmp)
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}
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}
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