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	This fixes a crash when we resolve (or try to) an external CNAME when no proxy is set. Add test as well.
		
			
				
	
	
		
			88 lines
		
	
	
		
			2.0 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			88 lines
		
	
	
		
			2.0 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
| package test
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| 
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| import (
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| 	"io/ioutil"
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| 	"log"
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| 	"sort"
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| 	"testing"
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| 
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| 	"github.com/coredns/coredns/middleware/proxy"
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| 	mtest "github.com/coredns/coredns/middleware/test"
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| 	"github.com/coredns/coredns/request"
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| 
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| 	"github.com/miekg/dns"
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| )
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| 
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| // Using miek.nl here because this is the easiest zone to get access to and it's masters
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| // run both NSD and BIND9, making checks like "what should we actually return" super easy.
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| var dsTestCases = []mtest.Case{
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| 	{
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| 		Qname: "_udp.miek.nl.", Qtype: dns.TypeDS,
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| 		Rcode: dns.RcodeNameError,
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| 		Ns: []dns.RR{
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| 			mtest.SOA("miek.nl.	1800	IN	SOA	linode.atoom.net. miek.miek.nl. 1282630057 14400 3600 604800 14400"),
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| 		},
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| 	},
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| 	{
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| 		Qname: "miek.nl.", Qtype: dns.TypeDS,
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| 		Ns: []dns.RR{
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| 			mtest.SOA("miek.nl.	1800	IN	SOA	linode.atoom.net. miek.miek.nl. 1282630057 14400 3600 604800 14400"),
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| 		},
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| 	},
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| }
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| 
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| func TestLookupDS(t *testing.T) {
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| 	t.Parallel()
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| 	name, rm, err := TempFile(".", miekNL)
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| 	if err != nil {
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| 		t.Fatalf("failed to create zone: %s", err)
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| 	}
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| 	defer rm()
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| 
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| 	corefile := `miek.nl:0 {
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|        file ` + name + `
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| }
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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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| 
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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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| 
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| 	log.SetOutput(ioutil.Discard)
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| 
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| 	p := proxy.NewLookup([]string{udp})
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| 	state := request.Request{W: &mtest.ResponseWriter{}, Req: new(dns.Msg)}
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| 
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| 	for _, tc := range dsTestCases {
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| 		resp, err := p.Lookup(state, tc.Qname, tc.Qtype)
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| 		if err != nil || resp == nil {
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| 			t.Fatalf("Expected to receive reply, but didn't for %s %d", tc.Qname, tc.Qtype)
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| 		}
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| 
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| 		sort.Sort(mtest.RRSet(resp.Answer))
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| 		sort.Sort(mtest.RRSet(resp.Ns))
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| 		sort.Sort(mtest.RRSet(resp.Extra))
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| 
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| 		if !mtest.Header(t, tc, resp) {
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| 			t.Logf("%v\n", resp)
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| 			continue
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| 		}
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| 		if !mtest.Section(t, tc, mtest.Answer, resp.Answer) {
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| 			t.Logf("%v\n", resp)
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| 		}
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| 		if !mtest.Section(t, tc, mtest.Ns, resp.Ns) {
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| 			t.Logf("%v\n", resp)
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| 		}
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| 		if !mtest.Section(t, tc, mtest.Extra, resp.Extra) {
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| 			t.Logf("%v\n", resp)
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| 		}
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| 	}
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| }
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