diff options
Diffstat (limited to 'middleware/file/dname_test.go')
| -rw-r--r-- | middleware/file/dname_test.go | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/middleware/file/dname_test.go b/middleware/file/dname_test.go new file mode 100644 index 000000000..e26a1c29a --- /dev/null +++ b/middleware/file/dname_test.go @@ -0,0 +1,159 @@ +package file + +import ( + "sort" + "strings" + "testing" + + "github.com/coredns/coredns/middleware/pkg/dnsrecorder" + "github.com/coredns/coredns/middleware/test" + + "github.com/miekg/dns" + "golang.org/x/net/context" +) + +// RFC 6672, Section 2.2. Assuming QTYPE != DNAME. +var dnameSubstitutionTestCases = []struct { + qname string + owner string + target string + expected string +}{ + {"com.", "example.com.", "example.net.", ""}, + {"example.com.", "example.com.", "example.net.", ""}, + {"a.example.com.", "example.com.", "example.net.", "a.example.net."}, + {"a.b.example.com.", "example.com.", "example.net.", "a.b.example.net."}, + {"ab.example.com.", "b.example.com.", "example.net.", ""}, + {"foo.example.com.", "example.com.", "example.net.", "foo.example.net."}, + {"a.x.example.com.", "x.example.com.", "example.net.", "a.example.net."}, + {"a.example.com.", "example.com.", "y.example.net.", "a.y.example.net."}, + {"cyc.example.com.", "example.com.", "example.com.", "cyc.example.com."}, + {"cyc.example.com.", "example.com.", "c.example.com.", "cyc.c.example.com."}, + {"shortloop.x.x.", "x.", ".", "shortloop.x."}, + {"shortloop.x.", "x.", ".", "shortloop."}, +} + +func TestDNAMESubstitution(t *testing.T) { + for i, tc := range dnameSubstitutionTestCases { + result := substituteDNAME(tc.qname, tc.owner, tc.target) + if result != tc.expected { + if result == "" { + result = "<no match>" + } + + t.Errorf("Case %d: Expected %s -> %s, got %v", i, tc.qname, tc.expected, result) + return + } + } +} + +var dnameTestCases = []test.Case{ + { + Qname: "dname.miek.nl.", Qtype: dns.TypeDNAME, + Answer: []dns.RR{ + test.DNAME("dname.miek.nl. 1800 IN DNAME test.miek.nl."), + }, + Ns: miekAuth, + }, + { + Qname: "dname.miek.nl.", Qtype: dns.TypeA, + Answer: []dns.RR{ + test.A("dname.miek.nl. 1800 IN A 127.0.0.1"), + }, + Ns: miekAuth, + }, + { + Qname: "dname.miek.nl.", Qtype: dns.TypeMX, + Answer: []dns.RR{}, + Ns: []dns.RR{ + test.SOA("miek.nl. 1800 IN SOA linode.atoom.net. miek.miek.nl. 1282630057 14400 3600 604800 14400"), + }, + }, + { + Qname: "a.dname.miek.nl.", Qtype: dns.TypeA, + Answer: []dns.RR{ + test.CNAME("a.dname.miek.nl. 1800 IN CNAME a.test.miek.nl."), + test.A("a.test.miek.nl. 1800 IN A 139.162.196.78"), + test.DNAME("dname.miek.nl. 1800 IN DNAME test.miek.nl."), + }, + Ns: miekAuth, + }, + { + Qname: "www.dname.miek.nl.", Qtype: dns.TypeA, + Answer: []dns.RR{ + test.A("a.test.miek.nl. 1800 IN A 139.162.196.78"), + test.DNAME("dname.miek.nl. 1800 IN DNAME test.miek.nl."), + test.CNAME("www.dname.miek.nl. 1800 IN CNAME www.test.miek.nl."), + test.CNAME("www.test.miek.nl. 1800 IN CNAME a.test.miek.nl."), + }, + Ns: miekAuth, + }, +} + +func TestLookupDNAME(t *testing.T) { + zone, err := Parse(strings.NewReader(dbMiekNLDNAME), testzone, "stdin") + if err != nil { + t.Fatalf("Expect no error when reading zone, got %q", err) + } + + fm := File{Next: test.ErrorHandler(), Zones: Zones{Z: map[string]*Zone{testzone: zone}, Names: []string{testzone}}} + ctx := context.TODO() + + for _, tc := range dnameTestCases { + m := tc.Msg() + + rec := dnsrecorder.New(&test.ResponseWriter{}) + _, err := fm.ServeDNS(ctx, rec, m) + if err != nil { + t.Errorf("Expected no error, got %v\n", err) + return + } + + resp := rec.Msg + sort.Sort(test.RRSet(resp.Answer)) + sort.Sort(test.RRSet(resp.Ns)) + sort.Sort(test.RRSet(resp.Extra)) + + if !test.Header(t, tc, resp) { + t.Logf("%v\n", resp) + continue + } + if !test.Section(t, tc, test.Answer, resp.Answer) { + t.Logf("%v\n", resp) + } + if !test.Section(t, tc, test.Ns, resp.Ns) { + t.Logf("%v\n", resp) + } + if !test.Section(t, tc, test.Extra, resp.Extra) { + t.Logf("%v\n", resp) + } + } +} + +const dbMiekNLDNAME = ` +$TTL 30M +$ORIGIN miek.nl. +@ IN SOA linode.atoom.net. miek.miek.nl. ( + 1282630057 ; Serial + 4H ; Refresh + 1H ; Retry + 7D ; Expire + 4H ) ; Negative Cache TTL + IN NS linode.atoom.net. + IN NS ns-ext.nlnetlabs.nl. + IN NS omval.tednet.nl. + IN NS ext.ns.whyscream.net. + +test IN MX 1 aspmx.l.google.com. + IN MX 5 alt1.aspmx.l.google.com. + IN MX 5 alt2.aspmx.l.google.com. + IN MX 10 aspmx2.googlemail.com. + IN MX 10 aspmx3.googlemail.com. +a.test IN A 139.162.196.78 + IN AAAA 2a01:7e00::f03c:91ff:fef1:6735 +www.test IN CNAME a.test + +dname IN DNAME test +dname IN A 127.0.0.1 +a.dname IN A 127.0.0.1 +` |