ef315ef3e2
* Add edns0 code rewrite * check arg count * change `new`; set EDNS0 if request doesn't have it set * change set to replace_or_append * change to append_or_replace * return error in new * update documents * fixt UT * return error * go fmt * Rework for more general EDNS0 use Also changed how rules are created and validated. Implements EDNS0 NSID in addition to local. * go fmt * README updates, NSID tests and fixes * gofmt -s -w * Fix tests for rewrite syntax change * Add tests, fix error message * Review nits * Missed on nit * More tests, integration test, fix edns0 parse issue * Fix README, use RewriteIgnored * go fmt
94 lines
2.2 KiB
Go
94 lines
2.2 KiB
Go
package test
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import (
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"bytes"
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"io/ioutil"
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"log"
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"testing"
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"github.com/miekg/dns"
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)
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func TestRewrite(t *testing.T) {
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t.Parallel()
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corefile := `.:0 {
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rewrite type MX a
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rewrite edns0 local set 0xffee hello-world
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erratic . {
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drop 0
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}
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}`
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i, err := CoreDNSServer(corefile)
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if err != nil {
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t.Fatalf("Could not get CoreDNS serving instance: %s", err)
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}
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udp, _ := CoreDNSServerPorts(i, 0)
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if udp == "" {
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t.Fatalf("Could not get UDP listening port")
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}
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defer i.Stop()
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log.SetOutput(ioutil.Discard)
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testMX(t, udp)
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testEdns0(t, udp)
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}
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func testMX(t *testing.T, server string) {
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m := new(dns.Msg)
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m.SetQuestion("example.com.", dns.TypeMX)
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r, err := dns.Exchange(m, server)
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if err != nil {
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t.Fatalf("Expected to receive reply, but didn't: %s", err)
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}
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// expect answer section with A record in it
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if len(r.Answer) == 0 {
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t.Error("Expected to at least one RR in the answer section, got none")
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}
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if r.Answer[0].Header().Rrtype != dns.TypeA {
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t.Errorf("Expected RR to A, got: %d", r.Answer[0].Header().Rrtype)
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}
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if r.Answer[0].(*dns.A).A.String() != "192.0.2.53" {
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t.Errorf("Expected 192.0.2.53, got: %s", r.Answer[0].(*dns.A).A.String())
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}
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}
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func testEdns0(t *testing.T, server string) {
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m := new(dns.Msg)
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m.SetQuestion("example.com.", dns.TypeA)
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r, err := dns.Exchange(m, server)
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if err != nil {
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t.Fatalf("Expected to receive reply, but didn't: %s", err)
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}
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// expect answer section with A record in it
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if len(r.Answer) == 0 {
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t.Error("Expected to at least one RR in the answer section, got none")
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}
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if r.Answer[0].Header().Rrtype != dns.TypeA {
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t.Errorf("Expected RR to A, got: %d", r.Answer[0].Header().Rrtype)
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}
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if r.Answer[0].(*dns.A).A.String() != "192.0.2.53" {
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t.Errorf("Expected 192.0.2.53, got: %s", r.Answer[0].(*dns.A).A.String())
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}
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o := r.IsEdns0()
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if o == nil || len(o.Option) == 0 {
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t.Error("Expected EDNS0 options but got none")
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} else {
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if e, ok := o.Option[0].(*dns.EDNS0_LOCAL); ok {
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if e.Code != 0xffee {
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t.Errorf("Expected EDNS_LOCAL code 0xffee but got %x", e.Code)
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}
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if !bytes.Equal(e.Data, []byte("hello-world")) {
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t.Errorf("Expected EDNS_LOCAL data 'hello-world' but got %q", e.Data)
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}
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} else {
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t.Errorf("Expected EDNS0_LOCAL but got %v", o.Option[0])
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}
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}
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}
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