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Merge pull request #58 from miekg/dnssec-serving-nsec

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Get positive dnssec stuff going
This commit is contained in:
Miek Gieben
2016-03-30 20:52:09 +01:00
parent 4a313d67ff 3591e2a6aa
commit 24394f0d4d
15 changed files with 580 additions and 105 deletions
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11
middleware/canonical.go
View File

@@ -8,17 +8,20 @@ import (
// Less returns <0 when a is less than b, 0 when they are equal and
// >0 when a is larger than b.
// The function order names in DNSSEC canonical order.
// The function orders names in DNSSEC canonical order: RFC 4034s section-6.1
//
// See http://bert-hubert.blogspot.co.uk/2015/10/how-to-do-fast-canonical-ordering-of.html
// for a blog article on how we do this. And https://tools.ietf.org/html/rfc4034#section-6.1 .
// for a blog article on this implementation:
func Less(a, b string) int {
i := 1
aj := len(a)
bj := len(b)
for {
ai, _ := dns.PrevLabel(a, i)
bi, _ := dns.PrevLabel(b, i)
ai, oka := dns.PrevLabel(a, i)
bi, okb := dns.PrevLabel(b, i)
if oka && okb {
return 0
}
// sadly this []byte will allocate...
ab := []byte(a[ai:aj])
toLowerAndDDD(ab)

3
middleware/etcd/cname_test.go
View File

@@ -21,8 +21,7 @@ func TestCnameLookup(t *testing.T) {
defer delete(t, etc, serv.Key)
}
for _, tc := range dnsTestCasesCname {
m := new(dns.Msg)
m.SetQuestion(dns.Fqdn(tc.Qname), tc.Qtype)
m := tc.Msg()
rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
_, err := etc.ServeDNS(ctx, rec, m)

3
middleware/etcd/group_test.go
View File

@@ -23,8 +23,7 @@ func TestGroupLookup(t *testing.T) {
defer delete(t, etc, serv.Key)
}
for _, tc := range dnsTestCasesGroup {
m := new(dns.Msg)
m.SetQuestion(dns.Fqdn(tc.Qname), tc.Qtype)
m := tc.Msg()
rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
_, err := etc.ServeDNS(ctx, rec, m)

3
middleware/etcd/multi_test.go
View File

@@ -26,8 +26,7 @@ func TestMultiLookup(t *testing.T) {
defer delete(t, etcMulti, serv.Key)
}
for _, tc := range dnsTestCasesMulti {
m := new(dns.Msg)
m.SetQuestion(dns.Fqdn(tc.Qname), tc.Qtype)
m := tc.Msg()
rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
_, err := etcMulti.ServeDNS(ctx, rec, m)

3
middleware/etcd/other_test.go
View File

@@ -25,8 +25,7 @@ func TestOtherLookup(t *testing.T) {
defer delete(t, etc, serv.Key)
}
for _, tc := range dnsTestCasesOther {
m := new(dns.Msg)
m.SetQuestion(dns.Fqdn(tc.Qname), tc.Qtype)
m := tc.Msg()
rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
_, err := etc.ServeDNS(ctx, rec, m)

3
middleware/etcd/setup_test.go
View File

@@ -65,8 +65,7 @@ func TestLookup(t *testing.T) {
defer delete(t, etc, serv.Key)
}
for _, tc := range dnsTestCases {
m := new(dns.Msg)
m.SetQuestion(dns.Fqdn(tc.Qname), tc.Qtype)
m := tc.Msg()
rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
_, err := etc.ServeDNS(ctx, rec, m)

64
middleware/file/closest.go Normal file
View File

@@ -0,0 +1,64 @@
package file
import "github.com/miekg/dns"
// ClosestEncloser returns the closest encloser for rr.
func (z *Zone) ClosestEncloser(rr dns.RR) string {
// tree/tree.go does not store a parent *Node pointer, so we can't
// just follow up the tree. TODO(miek): fix.
offset, end := dns.NextLabel(rr.Header().Name, 0)
for !end {
elem := z.Tree.Get(rr)
if elem != nil {
return elem.Name()
}
rr.Header().Name = rr.Header().Name[offset:]
offset, end = dns.NextLabel(rr.Header().Name, offset)
}
return z.SOA.Header().Name
}
// nameErrorProof finds the closest encloser and return an NSEC that proofs
// the wildcard does not exist and an NSEC that proofs the name does no exist.
func (z *Zone) nameErrorProof(rr dns.RR) []dns.RR {
elem := z.Tree.Prev(rr)
if elem == nil {
return nil
}
nsec := z.lookupNSEC(elem, true)
nsecIndex := 0
for i := 0; i < len(nsec); i++ {
if nsec[i].Header().Rrtype == dns.TypeNSEC {
nsecIndex = i
break
}
}
ce := z.ClosestEncloser(rr)
wildcard := "*." + ce
rr.Header().Name = wildcard
elem = z.Tree.Prev(rr)
if elem == nil {
// Root?
return nil
}
nsec1 := z.lookupNSEC(elem, true)
nsec1Index := 0
for i := 0; i < len(nsec1); i++ {
if nsec1[i].Header().Rrtype == dns.TypeNSEC {
nsec1Index = i
break
}
}
// Check for duplicate NSEC.
if nsec[nsecIndex].Header().Name == nsec1[nsec1Index].Header().Name &&
nsec[nsecIndex].(*dns.NSEC).NextDomain == nsec1[nsec1Index].(*dns.NSEC).NextDomain {
return nsec
}
return append(nsec, nsec1...)
}

37
middleware/file/closest_test.go Normal file
View File

@@ -0,0 +1,37 @@
package file
import (
"strings"
"testing"
"github.com/miekg/dns"
)
func TestClosestEncloser(t *testing.T) {
z, err := Parse(strings.NewReader(dbMiekNL), testzone, "stdin")
if err != nil {
t.Fatalf("expect no error when reading zone, got %q", err)
}
tests := []struct {
in, out string
}{
{"miek.nl.", "miek.nl."},
{"www.miek.nl.", "www.miek.nl."},
{"blaat.miek.nl.", "miek.nl."},
{"blaat.www.miek.nl.", "www.miek.nl."},
{"www.blaat.miek.nl.", "miek.nl."},
{"blaat.a.miek.nl.", "a.miek.nl."},
}
mk, _ := dns.TypeToRR[dns.TypeA]
rr := mk()
for _, tc := range tests {
rr.Header().Name = tc.in
ce := z.ClosestEncloser(rr)
if ce != tc.out {
t.Errorf("expected ce to be %s for %s, got %s", tc.out, tc.in, ce)
}
}
}

56
middleware/file/dnssec_test.go
View File

@@ -14,55 +14,90 @@ import (
var dnssecTestCases = []coretest.Case{
{
Qname: "miek.nl.", Qtype: dns.TypeSOA,
Qname: "miek.nl.", Qtype: dns.TypeSOA, Do: true,
Answer: []dns.RR{
// because we sort, this look fishy, but it is OK.
coretest.RRSIG("miek.nl. 1800 IN RRSIG SOA 8 2 1800 20160426031301 20160327031301 12051 miek.nl. FIrzy07acBbtyQczy1dc="),
coretest.SOA("miek.nl. 1800 IN SOA linode.atoom.net. miek.miek.nl. 1282630057 14400 3600 604800 14400"),
},
},
{
Qname: "miek.nl.", Qtype: dns.TypeAAAA,
Qname: "miek.nl.", Qtype: dns.TypeAAAA, Do: true,
Answer: []dns.RR{
coretest.AAAA("miek.nl. 1800 IN AAAA 2a01:7e00::f03c:91ff:fef1:6735"),
coretest.RRSIG("miek.nl. 1800 IN RRSIG AAAA 8 2 1800 20160426031301 20160327031301 12051 miek.nl. SsRT="),
},
},
{
Qname: "miek.nl.", Qtype: dns.TypeMX,
Qname: "miek.nl.", Qtype: dns.TypeMX, Do: true,
Answer: []dns.RR{
coretest.MX("miek.nl. 1800 IN MX 1 aspmx.l.google.com."),
coretest.MX("miek.nl. 1800 IN MX 10 aspmx2.googlemail.com."),
coretest.MX("miek.nl. 1800 IN MX 10 aspmx3.googlemail.com."),
coretest.MX("miek.nl. 1800 IN MX 5 alt1.aspmx.l.google.com."),
coretest.MX("miek.nl. 1800 IN MX 5 alt2.aspmx.l.google.com."),
coretest.RRSIG("miek.nl. 1800 IN RRSIG MX 8 2 1800 20160426031301 20160327031301 12051 miek.nl. kLqG+iOr="),
},
},
{
Qname: "www.miek.nl.", Qtype: dns.TypeA,
Qname: "www.miek.nl.", Qtype: dns.TypeA, Do: true,
Answer: []dns.RR{
coretest.CNAME("www.miek.nl. 1800 IN CNAME a.miek.nl."),
},
Extra: []dns.RR{
coretest.A("a.miek.nl. 1800 IN A 139.162.196.78"),
coretest.AAAA("a.miek.nl. 1800 IN AAAA 2a01:7e00::f03c:91ff:fef1:6735"),
coretest.RRSIG("a.miek.nl. 1800 IN RRSIG A 8 3 1800 20160426031301 20160327031301 12051 miek.nl. lxLotCjWZ3kihTxk="),
},
},
{
Qname: "a.miek.nl.", Qtype: dns.TypeSRV,
// NoData
Qname: "a.miek.nl.", Qtype: dns.TypeSRV, Do: true,
Ns: []dns.RR{
coretest.NSEC("a.miek.nl. 14400 IN NSEC archive.miek.nl. A AAAA RRSIG NSEC"),
coretest.RRSIG("a.miek.nl. 14400 IN RRSIG NSEC 8 3 14400 20160426031301 20160327031301 12051 miek.nl. GqnF6cutipmSHEao="),
coretest.RRSIG("miek.nl. 1800 IN RRSIG SOA 8 2 1800 20160426031301 20160327031301 12051 miek.nl. FIrzy07acBbtyQczy1dc="),
coretest.SOA("miek.nl. 1800 IN SOA linode.atoom.net. miek.miek.nl. 1282630057 14400 3600 604800 14400"),
},
},
{
Qname: "b.miek.nl.", Qtype: dns.TypeA,
Qname: "b.miek.nl.", Qtype: dns.TypeA, Do: true,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
coretest.NSEC("archive.miek.nl. 14400 IN NSEC go.dns.miek.nl. CNAME RRSIG NSEC"),
coretest.RRSIG("archive.miek.nl. 14400 IN RRSIG NSEC 8 3 14400 20160426031301 20160327031301 12051 miek.nl. jEpx8lcp4do5fWXg="),
coretest.NSEC("miek.nl. 14400 IN NSEC a.miek.nl. A NS SOA MX AAAA RRSIG NSEC DNSKEY"),
coretest.RRSIG("miek.nl. 14400 IN RRSIG NSEC 8 2 14400 20160426031301 20160327031301 12051 miek.nl. mFfc3r/9PSC1H6oSpdC"),
coretest.RRSIG("miek.nl. 1800 IN RRSIG SOA 8 2 1800 20160426031301 20160327031301 12051 miek.nl. FIrzy07acBbtyQczy1dc="),
coretest.SOA("miek.nl. 1800 IN SOA linode.atoom.net. miek.miek.nl. 1282630057 14400 3600 604800 14400"),
},
},
{
Qname: "b.blaat.miek.nl.", Qtype: dns.TypeA, Do: true,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
coretest.NSEC("archive.miek.nl. 14400 IN NSEC go.dns.miek.nl. CNAME RRSIG NSEC"),
coretest.RRSIG("archive.miek.nl. 14400 IN RRSIG NSEC 8 3 14400 20160426031301 20160327031301 12051 miek.nl. jEpx8lcp4do5fWXg="),
coretest.NSEC("miek.nl. 14400 IN NSEC a.miek.nl. A NS SOA MX AAAA RRSIG NSEC DNSKEY"),
coretest.RRSIG("miek.nl. 14400 IN RRSIG NSEC 8 2 14400 20160426031301 20160327031301 12051 miek.nl. mFfc3r/9PSC1H6oSpdC"),
coretest.RRSIG("miek.nl. 1800 IN RRSIG SOA 8 2 1800 20160426031301 20160327031301 12051 miek.nl. FIrzy07acBbtyQczy1dc="),
coretest.SOA("miek.nl. 1800 IN SOA linode.atoom.net. miek.miek.nl. 1282630057 14400 3600 604800 14400"),
},
},
{
Qname: "b.a.miek.nl.", Qtype: dns.TypeA, Do: true,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
// dedupped NSEC, because 1 nsec tells all
coretest.NSEC("a.miek.nl. 14400 IN NSEC archive.miek.nl. A AAAA RRSIG NSEC"),
coretest.RRSIG("a.miek.nl. 14400 IN RRSIG NSEC 8 3 14400 20160426031301 20160327031301 12051 miek.nl. GqnF6cut/RRGPQ1QGQE1ipmSHEao="),
coretest.RRSIG("miek.nl. 1800 IN RRSIG SOA 8 2 1800 20160426031301 20160327031301 12051 miek.nl. FIrzy07acBbtyQczy1dc="),
coretest.SOA("miek.nl. 1800 IN SOA linode.atoom.net. miek.miek.nl. 1282630057 14400 3600 604800 14400"),
},
},
}
// TODO(miek): enable
func testLookupDNSSEC(t *testing.T) {
func TestLookupDNSSEC(t *testing.T) {
zone, err := Parse(strings.NewReader(dbMiekNL_signed), testzone, "stdin")
if err != nil {
t.Fatalf("expect no error when reading zone, got %q", err)
@@ -72,8 +107,7 @@ func testLookupDNSSEC(t *testing.T) {
ctx := context.TODO()
for _, tc := range dnssecTestCases {
m := new(dns.Msg)
m.SetQuestion(dns.Fqdn(tc.Qname), tc.Qtype)
m := tc.Msg()
rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
_, err := fm.ServeDNS(ctx, rec, m)

20
middleware/file/file.go
View File

@@ -39,7 +39,7 @@ func (f File) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
return xfr.ServeDNS(ctx, w, r)
}
rrs, extra, result := z.Lookup(qname, state.QType(), state.Do())
answer, ns, extra, result := z.Lookup(qname, state.QType(), state.Do())
m := new(dns.Msg)
m.SetReply(r)
@@ -47,18 +47,17 @@ func (f File) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
switch result {
case Success:
// case?
m.Answer = rrs
m.Answer = answer
m.Ns = ns
m.Extra = extra
// Ns section
case NameError:
m.Ns = ns
m.Rcode = dns.RcodeNameError
fallthrough
case NoData:
// case?
m.Ns = rrs
default:
// TODO
m.Ns = ns
case ServerFailure:
return dns.RcodeServerFailure, nil
}
m, _ = state.Scrub(m)
w.WriteMsg(m)
@@ -78,6 +77,11 @@ func Parse(f io.Reader, origin, fileName string) (*Zone, error) {
z.SOA = x.RR.(*dns.SOA)
continue
}
if x.RR.Header().Rrtype == dns.TypeRRSIG {
if x, ok := x.RR.(*dns.RRSIG); ok && x.TypeCovered == dns.TypeSOA {
z.SIG = append(z.SIG, x)
}
}
z.Insert(x.RR)
}
return z, nil

119
middleware/file/lookup.go
View File

@@ -1,6 +1,10 @@
package file
import "github.com/miekg/dns"
import (
"github.com/miekg/coredns/middleware/file/tree"
"github.com/miekg/dns"
)
// Result is the result of a Lookup
type Result int
@@ -8,19 +12,17 @@ type Result int
const (
Success Result = iota
NameError
NoData // aint no offical NoData return code.
NoData
ServerFailure
)
// Lookup looks up qname and qtype in the zone, when do is true DNSSEC are included as well.
// Two sets of records are returned, one for the answer and one for the additional section.
func (z *Zone) Lookup(qname string, qtype uint16, do bool) ([]dns.RR, []dns.RR, Result) {
// TODO(miek): implement DNSSEC
// Three sets of records are returned, one for the answer, one for authority and one for the additional section.
func (z *Zone) Lookup(qname string, qtype uint16, do bool) ([]dns.RR, []dns.RR, []dns.RR, Result) {
var rr dns.RR
mk, known := dns.TypeToRR[qtype]
if !known {
return nil, nil, NameError
// Uhm...?
// rr = new(RFC3597)
return nil, nil, nil, ServerFailure
} else {
rr = mk()
}
@@ -28,41 +30,106 @@ func (z *Zone) Lookup(qname string, qtype uint16, do bool) ([]dns.RR, []dns.RR,
return z.lookupSOA(do)
}
// Misuse rr to be a question.
rr.Header().Rrtype = qtype
rr.Header().Name = qname
elem := z.Tree.Get(rr)
if elem == nil {
return []dns.RR{z.SOA}, nil, NameError
if elem == nil {
return z.nameError(elem, rr, do)
}
}
rrs := elem.Types(dns.TypeCNAME)
if len(rrs) > 0 { // should only ever be 1 actually; TODO(miek) check for this?
// lookup target from the cname
rr.Header().Name = rrs[0].(*dns.CNAME).Target
elem := z.Tree.Get(rr)
if elem == nil {
return rrs, nil, Success
}
return rrs, elem.All(), Success
return z.lookupCNAME(rrs, rr, do)
}
rrs = elem.Types(qtype)
if len(rrs) == 0 {
return []dns.RR{z.SOA}, nil, NoData
}
// Need to check sub-type on RRSIG records to only include the correctly
// typed ones.
return rrs, nil, Success
return z.noData(elem, do)
}
func (z *Zone) lookupSOA(do bool) ([]dns.RR, []dns.RR, Result) {
return []dns.RR{z.SOA}, nil, Success
if do {
sigs := elem.Types(dns.TypeRRSIG)
sigs = signatureForSubType(sigs, qtype)
if len(sigs) > 0 {
rrs = append(rrs, sigs...)
}
}
return rrs, nil, nil, Success
}
func (z *Zone) noData(elem *tree.Elem, do bool) ([]dns.RR, []dns.RR, []dns.RR, Result) {
soa, _, _, _ := z.lookupSOA(do)
nsec := z.lookupNSEC(elem, do)
return nil, append(soa, nsec...), nil, Success
}
func (z *Zone) nameError(elem *tree.Elem, rr dns.RR, do bool) ([]dns.RR, []dns.RR, []dns.RR, Result) {
ret := []dns.RR{z.SOA}
if do {
ret = append(ret, z.SIG...)
ret = append(ret, z.nameErrorProof(rr)...)
}
return nil, ret, nil, NameError
}
func (z *Zone) lookupSOA(do bool) ([]dns.RR, []dns.RR, []dns.RR, Result) {
if do {
ret := append([]dns.RR{z.SOA}, z.SIG...)
return ret, nil, nil, Success
}
return []dns.RR{z.SOA}, nil, nil, Success
}
// lookupNSEC looks up nsec and sigs.
func (z *Zone) lookupNSEC(elem *tree.Elem, do bool) []dns.RR {
if !do {
return nil
}
nsec := elem.Types(dns.TypeNSEC)
if do {
sigs := elem.Types(dns.TypeRRSIG)
sigs = signatureForSubType(sigs, dns.TypeNSEC)
if len(sigs) > 0 {
nsec = append(nsec, sigs...)
}
}
return nsec
}
func (z *Zone) lookupCNAME(rrs []dns.RR, rr dns.RR, do bool) ([]dns.RR, []dns.RR, []dns.RR, Result) {
elem := z.Tree.Get(rr)
if elem == nil {
return rrs, nil, nil, Success
}
extra := cnameForType(elem.All(), rr.Header().Rrtype)
if do {
sigs := elem.Types(dns.TypeRRSIG)
sigs = signatureForSubType(sigs, rr.Header().Rrtype)
if len(sigs) > 0 {
extra = append(extra, sigs...)
}
}
return rrs, nil, extra, Success
}
func cnameForType(targets []dns.RR, origQtype uint16) []dns.RR {
ret := []dns.RR{}
for _, target := range targets {
if target.Header().Rrtype == origQtype {
ret = append(ret, target)
}
}
return ret
}
// signatureForSubType range through the signature and return the correct
// ones for the subtype.
func (z *Zone) signatureForSubType(rrs []dns.RR, subtype uint16, do bool) []dns.RR {
if !do {
return nil
}
func signatureForSubType(rrs []dns.RR, subtype uint16) []dns.RR {
sigs := []dns.RR{}
for _, sig := range rrs {
if s, ok := sig.(*dns.RRSIG); ok {

9
middleware/file/lookup_test.go
View File

@@ -43,7 +43,6 @@ var dnsTestCases = []coretest.Case{
Extra: []dns.RR{
coretest.A("a.miek.nl. 1800 IN A 139.162.196.78"),
coretest.AAAA("a.miek.nl. 1800 IN AAAA 2a01:7e00::f03c:91ff:fef1:6735"),
},
},
{
@@ -61,7 +60,10 @@ var dnsTestCases = []coretest.Case{
},
}
const testzone = "miek.nl."
const (
testzone = "miek.nl."
testzone1 = "dnssex.nl."
)
func TestLookup(t *testing.T) {
zone, err := Parse(strings.NewReader(dbMiekNL), testzone, "stdin")
@@ -73,8 +75,7 @@ func TestLookup(t *testing.T) {
ctx := context.TODO()
for _, tc := range dnsTestCases {
m := new(dns.Msg)
m.SetQuestion(dns.Fqdn(tc.Qname), tc.Qtype)
m := tc.Msg()
rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
_, err := fm.ServeDNS(ctx, rec, m)

98
middleware/file/tree/tree.go
View File

@@ -13,12 +13,11 @@
// Heavily modified by Miek Gieben for use in DNS zones.
package tree
// TODO(miek): locking? lockfree
// TODO(miek): locking? lockfree would be nice. Will probably go for fine grained locking on the name level.
// TODO(miek): fix docs
import (
"strings"
"github.com/miekg/coredns/middleware"
"github.com/miekg/dns"
)
@@ -47,7 +46,7 @@ func newElem(rr dns.RR) *Elem {
return &e
}
// Types returns the types from with type qtype from e.
// Types returns the RRs with type qtype from e.
func (e *Elem) Types(qtype uint16) []dns.RR {
if rrs, ok := e.m[qtype]; ok {
// TODO(miek): length should never be zero here.
@@ -56,6 +55,7 @@ func (e *Elem) Types(qtype uint16) []dns.RR {
return nil
}
// All returns all RRs from e, regardless of type.
func (e *Elem) All() []dns.RR {
list := []dns.RR{}
for _, rrs := range e.m {
@@ -64,6 +64,15 @@ func (e *Elem) All() []dns.RR {
return list
}
// Return the domain name for this element.
func (e *Elem) Name() string {
for _, rrs := range e.m {
return rrs[0].Header().Name
}
return ""
}
// Insert inserts rr into e. If rr is equal to existing rrs this is a noop.
func (e *Elem) Insert(rr dns.RR) {
t := rr.Header().Rrtype
if e.m == nil {
@@ -110,26 +119,14 @@ func (e *Elem) Delete(rr dns.RR) (empty bool) {
return
}
// TODO(miek): need case ignore compare that is more efficient.
func Less(a *Elem, rr dns.RR) int {
aname := ""
for _, ar := range a.m {
aname = strings.ToLower(ar[0].Header().Name)
break
}
rname := strings.ToLower(rr.Header().Name)
if aname == rname {
return 0
}
if aname < rname {
return -1
}
return 1
return middleware.Less(rr.Header().Name, a.Name())
}
// Assuming the same type and name this will check if the rdata is equal as well.
func equalRdata(a, b dns.RR) bool {
switch x := a.(type) {
// TODO(miek): more types, i.e. all types.
case *dns.A:
return x.A.Equal(b.(*dns.A).A)
case *dns.AAAA:
@@ -259,8 +256,7 @@ func (t *Tree) Len() int {
return t.Count
}
// Get returns the first match of q in the Tree. If insertion without
// replacement is used, this is probably not what you want.
// Get returns the first match of rr in the Tree.
func (t *Tree) Get(rr dns.RR) *Elem {
if t.Root == nil {
return nil
@@ -287,11 +283,8 @@ func (n *Node) search(rr dns.RR) *Node {
return n
}
// Insert inserts the Comparable e into the Tree at the first match found
// with e or when a nil node is reached. Insertion without replacement can
// specified by ensuring that e.Compare() never returns 0. If insert without
// replacement is performed, a distinct query Comparable must be used that
// can return 0 with a Compare() call.
// Insert inserts rr into the Tree at the first match found
// with e or when a nil node is reached.
func (t *Tree) Insert(rr dns.RR) {
var d int
t.Root, d = t.Root.insert(rr)
@@ -340,8 +333,7 @@ func (n *Node) insert(rr dns.RR) (root *Node, d int) {
return
}
// DeleteMin deletes the node with the minimum value in the tree. If insertion without
// replacement has been used, the left-most minimum will be deleted.
// DeleteMin deletes the node with the minimum value in the tree.
func (t *Tree) DeleteMin() {
if t.Root == nil {
return
@@ -369,8 +361,7 @@ func (n *Node) deleteMin() (root *Node, d int) {
return
}
// DeleteMax deletes the node with the maximum value in the tree. If insertion without
// replacement has been used, the right-most maximum will be deleted.
// DeleteMax deletes the node with the maximum value in the tree.
func (t *Tree) DeleteMax() {
if t.Root == nil {
return
@@ -401,7 +392,7 @@ func (n *Node) deleteMax() (root *Node, d int) {
return
}
// Delete removes rr from the tree, is the node turns empty, that node is return with DeleteNode.
// Delete removes rr from the tree, is the node turns empty, that node is deleted with DeleteNode.
func (t *Tree) Delete(rr dns.RR) {
if t.Root == nil {
return
@@ -420,9 +411,7 @@ func (t *Tree) Delete(rr dns.RR) {
}
}
// DeleteNode deletes the node that matches e according to Compare(). Note that Compare must
// identify the target node uniquely and in cases where non-unique keys are used,
// attributes used to break ties must be used to determine tree ordering during insertion.
// DeleteNode deletes the node that matches rr according to Less().
func (t *Tree) DeleteNode(rr dns.RR) {
if t.Root == nil {
return
@@ -469,8 +458,7 @@ func (n *Node) delete(rr dns.RR) (root *Node, d int) {
return
}
// Return the minimum value stored in the tree. This will be the left-most minimum value if
// insertion without replacement has been used.
// Min returns the minimum value stored in the tree.
func (t *Tree) Min() *Elem {
if t.Root == nil {
return nil
@@ -484,8 +472,7 @@ func (n *Node) min() *Node {
return n
}
// Return the maximum value stored in the tree. This will be the right-most maximum value if
// insertion without replacement has been used.
// Max returns the maximum value stored in the tree.
func (t *Tree) Max() *Elem {
if t.Root == nil {
return nil
@@ -499,8 +486,8 @@ func (n *Node) max() *Node {
return n
}
// Floor returns the greatest value equal to or less than the query q according to q.Compare().
func (t *Tree) Floor(rr dns.RR) *Elem {
// Prev returns the greatest value equal to or less than the rr according to Less().
func (t *Tree) Prev(rr dns.RR) *Elem {
if t.Root == nil {
return nil
}
@@ -528,10 +515,8 @@ func (n *Node) floor(rr dns.RR) *Node {
return n
}
// TODO(successor, predecessor)
// Ceil returns the smallest value equal to or greater than the query q according to q.Compare().
func (t *Tree) Ceil(rr dns.RR) *Elem {
// Next returns the smallest value equal to or greater than the rr according to Less().
func (t *Tree) Next(rr dns.RR) *Elem {
if t.Root == nil {
return nil
}
@@ -559,6 +544,33 @@ func (n *Node) ceil(rr dns.RR) *Node {
return n
}
// Do performs fn on all values stored in the tree. A boolean is returned indicating whether the
// Do traversal was interrupted by an Operation returning true. If fn alters stored values' sort
// relationships, future tree operation behaviors are undefined.
func (t *Tree) Do(fn func(e *Elem) bool) bool {
if t.Root == nil {
return false
}
return t.Root.do(fn)
}
func (n *Node) do(fn func(e *Elem) bool) (done bool) {
if n.Left != nil {
done = n.Left.do(fn)
if done {
return
}
}
done = fn(n.Elem)
if done {
return
}
if n.Right != nil {
done = n.Right.do(fn)
}
return
}
/*
Copyright ©2012 The bíogo Authors. All rights reserved.

222
middleware/file/wildcard_test.go Normal file
View File

@@ -0,0 +1,222 @@
package file
import (
"sort"
"strings"
"testing"
"github.com/miekg/coredns/middleware"
coretest "github.com/miekg/coredns/middleware/testing"
"github.com/miekg/dns"
"golang.org/x/net/context"
)
var dnssecWildcardTestCases = []coretest.Case{
{
Qname: "blaat.dnssex.nl.", Qtype: dns.TypeTXT, Do: true,
Answer: []dns.RR{},
},
}
func testLookupDNSSECWildcard(t *testing.T) {
zone, err := Parse(strings.NewReader(dbMiekNL_signed), testzone1, "stdin")
if err != nil {
t.Fatalf("expect no error when reading zone, got %q", err)
}
fm := File{Next: coretest.ErrorHandler(), Zones: Zones{Z: map[string]*Zone{testzone1: zone}, Names: []string{testzone1}}}
ctx := context.TODO()
for _, tc := range dnssecWildcardTestCases {
m := tc.Msg()
rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
_, err := fm.ServeDNS(ctx, rec, m)
if err != nil {
t.Errorf("expected no error, got %v\n", err)
return
}
resp := rec.Msg()
sort.Sort(coretest.RRSet(resp.Answer))
sort.Sort(coretest.RRSet(resp.Ns))
sort.Sort(coretest.RRSet(resp.Extra))
if resp.Rcode != tc.Rcode {
t.Errorf("rcode is %q, expected %q", dns.RcodeToString[resp.Rcode], dns.RcodeToString[tc.Rcode])
t.Logf("%v\n", resp)
continue
}
if len(resp.Answer) != len(tc.Answer) {
t.Errorf("answer for %q contained %d results, %d expected", tc.Qname, len(resp.Answer), len(tc.Answer))
t.Logf("%v\n", resp)
continue
}
if len(resp.Ns) != len(tc.Ns) {
t.Errorf("authority for %q contained %d results, %d expected", tc.Qname, len(resp.Ns), len(tc.Ns))
t.Logf("%v\n", resp)
continue
}
if len(resp.Extra) != len(tc.Extra) {
t.Errorf("additional for %q contained %d results, %d expected", tc.Qname, len(resp.Extra), len(tc.Extra))
t.Logf("%v\n", resp)
continue
}
if !coretest.CheckSection(t, tc, coretest.Answer, resp.Answer) {
t.Logf("%v\n", resp)
}
if !coretest.CheckSection(t, tc, coretest.Ns, resp.Ns) {
t.Logf("%v\n", resp)
}
if !coretest.CheckSection(t, tc, coretest.Extra, resp.Extra) {
t.Logf("%v\n", resp)
}
}
}
const dbMiekNL_wildcard_signed = `
; File written on Tue Mar 29 21:02:24 2016
; dnssec_signzone version 9.10.3-P4-Ubuntu
dnssex.nl. 1800 IN SOA linode.atoom.net. miek.miek.nl. (
1459281744 ; serial
14400 ; refresh (4 hours)
3600 ; retry (1 hour)
604800 ; expire (1 week)
14400 ; minimum (4 hours)
)
1800 RRSIG SOA 8 2 1800 (
20160428190224 20160329190224 14460 dnssex.nl.
CA/Y3m9hCOiKC/8ieSOv8SeP964BUdG/8MC3
WtKljUosK9Z9bBGrVizDjjqgq++lyH8BZJcT
aabAsERs4xj5PRtcxicwQXZACX5VYjXHQeZm
CyytFU5wq2gcXSmvUH86zZzftx3RGPvn1aOo
TlcvoC3iF8fYUCpROlUS0YR8Cdw= )
1800 NS omval.tednet.nl.
1800 NS linode.atoom.net.
1800 NS ns-ext.nlnetlabs.nl.
1800 RRSIG NS 8 2 1800 (
20160428190224 20160329190224 14460 dnssex.nl.
dLIeEvP86jj5nd3orv9bH7hTvkblF4Na0sbl
k6fJA6ha+FPN1d6Pig3NNEEVQ/+wlOp/JTs2
v07L7roEEUCbBprI8gMSld2gFDwNLW3DAB4M
WD/oayYdAnumekcLzhgvWixTABjWAGRTGQsP
sVDFXsGMf9TGGC9FEomgkCVeNC0= )
1800 A 139.162.196.78
1800 RRSIG A 8 2 1800 (
20160428190224 20160329190224 14460 dnssex.nl.
LKJKLzPiSEDWOLAag2YpfD5EJCuDcEAJu+FZ
Xy+4VyOv9YvRHCTL4vbrevOo5+XymY2RxU1q
j+6leR/Fe7nlreSj2wzAAk2bIYn4m6r7hqeO
aKZsUFfpX8cNcFtGEywfHndCPELbRxFeEziP
utqHFLPNMX5nYCpS28w4oJ5sAnM= )
1800 TXT "Doing It Safe Is Better"
1800 RRSIG TXT 8 2 1800 (
20160428190224 20160329190224 14460 dnssex.nl.
f6S+DUfJK1UYdOb3AHgUXzFTTtu+yLp/Fv7S
Hv0CAGhXAVw+nBbK719igFvBtObS33WKwzxD
1pQNMaJcS6zeevtD+4PKB1KDC4fyJffeEZT6
E30jGR8Y29/xA+Fa4lqDNnj9zP3b8TiABCle
ascY5abkgWCALLocFAzFJQ/27YQ= )
1800 AAAA 2a01:7e00::f03c:91ff:fef1:6735
1800 RRSIG AAAA 8 2 1800 (
20160428190224 20160329190224 14460 dnssex.nl.
PWcPSawEUBAfCuv0liEOQ8RYe7tfNW4rubIJ
LE+dbrub1DUer3cWrDoCYFtOufvcbkYJQ2CQ
AGjJmAQ5J2aqYDOPMrKa615V0KT3ifbZJcGC
gkIic4U/EXjaQpRoLdDzR9MyVXOmbA6sKYzj
ju1cNkLqM8D7Uunjl4pIr6rdSFo= )
14400 NSEC *.dnssex.nl. A NS SOA TXT AAAA RRSIG NSEC DNSKEY
14400 RRSIG NSEC 8 2 14400 (
20160428190224 20160329190224 14460 dnssex.nl.
oIvM6JZIlNc1aNKGTxv58ApSnDr1nDPPgnD9
9oJZRIn7eb5WnpeDz2H3z5+x6Bhlp5hJJaUp
KJ3Ss6Jg/IDnrmIvKmgq6L6gHj1Y1IiHmmU8
VeZTRzdTsDx/27OsN23roIvsytjveNSEMfIm
iLZ23x5kg1kBdJ9p3xjYHm5lR+8= )
1800 DNSKEY 256 3 8 (
AwEAAazSO6uvLPEVknDA8yxjFe8nnAMU7txp
wb19k55hQ81WV3G4bpBM1NdN6sbYHrkXaTNx
2bQWAkvX6pz0XFx3z/MPhW+vkakIWFYpyQ7R
AT5LIJfToVfiCDiyhhF0zVobKBInO9eoGjd9
BAW3TUt+LmNAO/Ak5D5BX7R3CuA7v9k7
) ; ZSK; alg = RSASHA256; key id = 14460
1800 DNSKEY 257 3 8 (
AwEAAbyeaV9zg0IqdtgYoqK5jJ239anzwG2i
gvH1DxSazLyaoNvEkCIvPgMLW/JWfy7Z1mQp
SMy9DtzL5pzRyQgw7kIeXLbi6jufUFd9pxN+
xnzKLf9mY5AcnGToTrbSL+jnMT67wG+c34+Q
PeVfucHNUePBxsbz2+4xbXiViSQyCQGv
) ; KSK; alg = RSASHA256; key id = 18772
1800 RRSIG DNSKEY 8 2 1800 (
20160428190224 20160329190224 14460 dnssex.nl.
cFSFtJE+DBGNxb52AweFaVHBe5Ue5MDpqNdC
TIneUnEhP2m+vK4zJ/TraK0WdQFpsX63pod8
PZ9y03vHUfewivyonCCBD3DcNdoU9subhN22
tez9Ct8Z5/9E4RAz7orXal4M1VUEhRcXSEH8
SJW20mfVsqJAiKqqNeGB/pAj23I= )
1800 RRSIG DNSKEY 8 2 1800 (
20160428190224 20160329190224 18772 dnssex.nl.
oiiwo/7NYacePqohEp50261elhm6Dieh4j2S
VZGAHU5gqLIQeW9CxKJKtSCkBVgUo4cvO4Rn
2tzArAuclDvBrMXRIoct8u7f96moeFE+x5FI
DYqICiV6k449ljj9o4t/5G7q2CRsEfxZKpTI
A/L0+uDk0RwVVzL45+TnilcsmZs= )
*.dnssex.nl. 1800 IN TXT "Doing It Safe Is Better"
1800 RRSIG TXT 8 2 1800 (
20160428190224 20160329190224 14460 dnssex.nl.
FUZSTyvZfeuuOpCmNzVKOfITRHJ6/ygjmnnb
XGBxVUyQjoLuYXwD5XqZWGw4iKH6QeSDfGCx
4MPqA4qQmW7Wwth7mat9yMfA4+p2sO84bysl
7/BG9+W2G+q1uQiM9bX9V42P2X/XuW5Y/t9Y
8u1sljQ7D8WwS6naH/vbaJxnDBw= )
14400 NSEC a.dnssex.nl. TXT RRSIG NSEC
14400 RRSIG NSEC 8 2 14400 (
20160428190224 20160329190224 14460 dnssex.nl.
os6INm6q2eXknD5z8TpfbK00uxVbQefMvHcR
/RNX/kh0xXvzAaaDOV+Ge/Ko+2dXnKP+J1LY
G9ffXNpdbaQy5ygzH5F041GJst4566GdG/jt
7Z7vLHYxEBTpZfxo+PLsXQXH3VTemZyuWyDf
qJzafXJVH1F0nDrcXmMlR6jlBHA= )
www.dnssex.nl. 1800 IN CNAME a.dnssex.nl.
1800 RRSIG CNAME 8 3 1800 (
20160428190224 20160329190224 14460 dnssex.nl.
Omv42q/uVvdNsWQoSrQ6m6w6U7r7Abga7uF4
25b3gZlse0C+WyMyGFMGUbapQm7azvBpreeo
uKJHjzd+ufoG+Oul6vU9vyoj+ejgHzGLGbJQ
HftfP+UqP5SWvAaipP/LULTWKPuiBcLDLiBI
PGTfsq0DB6R+qCDTV0fNnkgxEBQ= )
14400 NSEC dnssex.nl. CNAME RRSIG NSEC
14400 RRSIG NSEC 8 3 14400 (
20160428190224 20160329190224 14460 dnssex.nl.
TBN3ddfZW+kC84/g3QlNNJMeLZoyCalPQylt
KXXLPGuxfGpl3RYRY8KaHbP+5a8MnHjqjuMB
Lofb7yKMFxpSzMh8E36vnOqry1mvkSakNj9y
9jM8PwDjcpYUwn/ql76MsmNgEV5CLeQ7lyH4
AOrL79yOSQVI3JHJIjKSiz88iSw= )
a.dnssex.nl. 1800 IN A 139.162.196.78
1800 RRSIG A 8 3 1800 (
20160428190224 20160329190224 14460 dnssex.nl.
OXHpFj9nSpKi5yA/ULH7MOpGAWfyJ2yC/2xa
Pw0fqSY4QvcRt+V3adcFA4H9+P1b32GpxEjB
lXmCJID+H4lYkhUR4r4IOZBVtKG2SJEBZXip
pH00UkOIBiXxbGzfX8VL04v2G/YxUgLW57kA
aknaeTOkJsO20Y+8wmR9EtzaRFI= )
1800 AAAA 2a01:7e00::f03c:91ff:fef1:6735
1800 RRSIG AAAA 8 3 1800 (
20160428190224 20160329190224 14460 dnssex.nl.
jrepc/VnRzJypnrG0WDEqaAr3HMjWrPxJNX0
86gbFjZG07QxBmrA1rj0jM9YEWTjjyWb2tT7
lQhzKDYX/0XdOVUeeOM4FoSks80V+pWR8fvj
AZ5HmX69g36tLosMDKNR4lXcrpv89QovG4Hr
/r58fxEKEFJqrLDjMo6aOrg+uKA= )
14400 NSEC www.dnssex.nl. A AAAA RRSIG NSEC
14400 RRSIG NSEC 8 3 14400 (
20160428190224 20160329190224 14460 dnssex.nl.
S+UM62wXRNNFN3QDWK5YFWUbHBXC4aqaqinZ
A2ZDeC+IQgyw7vazPz7cLI5T0YXXks0HTMlr
soEjKnnRZsqSO9EuUavPNE1hh11Jjm0fB+5+
+Uro0EmA5Dhgc0Z2VpbXVQEhNDf/pI1gem15
RffN2tBYNykZn4Has2ySgRaaRYQ= )`

36
middleware/testing/helpers.go
View File

@@ -27,11 +27,26 @@ type Case struct {
Qname string
Qtype uint16
Rcode int
Do bool
Answer []dns.RR
Ns []dns.RR
Extra []dns.RR
}
func (c Case) Msg() *dns.Msg {
m := new(dns.Msg)
m.SetQuestion(dns.Fqdn(c.Qname), c.Qtype)
if c.Do {
o := new(dns.OPT)
o.Hdr.Name = "."
o.Hdr.Rrtype = dns.TypeOPT
o.SetDo()
o.SetUDPSize(4096)
m.Extra = []dns.RR{o}
}
return m
}
func A(rr string) *dns.A { r, _ := dns.NewRR(rr); return r.(*dns.A) }
func AAAA(rr string) *dns.AAAA { r, _ := dns.NewRR(rr); return r.(*dns.AAAA) }
func CNAME(rr string) *dns.CNAME { r, _ := dns.NewRR(rr); return r.(*dns.CNAME) }
@@ -41,6 +56,8 @@ func NS(rr string) *dns.NS { r, _ := dns.NewRR(rr); return r.(*dns.NS) }
func PTR(rr string) *dns.PTR { r, _ := dns.NewRR(rr); return r.(*dns.PTR) }
func TXT(rr string) *dns.TXT { r, _ := dns.NewRR(rr); return r.(*dns.TXT) }
func MX(rr string) *dns.MX { r, _ := dns.NewRR(rr); return r.(*dns.MX) }
func RRSIG(rr string) *dns.RRSIG { r, _ := dns.NewRR(rr); return r.(*dns.RRSIG) }
func NSEC(rr string) *dns.NSEC { r, _ := dns.NewRR(rr); return r.(*dns.NSEC) }
func CheckSection(t *testing.T, tc Case, sect Section, rr []dns.RR) bool {
section := []dns.RR{}
@@ -86,6 +103,25 @@ func CheckSection(t *testing.T, tc Case, sect Section, rr []dns.RR) bool {
t.Errorf("rr %d should have a Target of %q, but has %q", i, section[i].(*dns.SRV).Target, x.Target)
return false
}
case *dns.RRSIG:
if x.TypeCovered != section[i].(*dns.RRSIG).TypeCovered {
t.Errorf("rr %d should have a TypeCovered of %d, but has %d", i, section[i].(*dns.RRSIG).TypeCovered, x.TypeCovered)
return false
}
if x.Labels != section[i].(*dns.RRSIG).Labels {
t.Errorf("rr %d should have a Labels of %d, but has %d", i, section[i].(*dns.RRSIG).Labels, x.Labels)
return false
}
if x.SignerName != section[i].(*dns.RRSIG).SignerName {
t.Errorf("rr %d should have a SignerName of %d, but has %d", i, section[i].(*dns.RRSIG).SignerName, x.SignerName)
return false
}
case *dns.NSEC:
if x.NextDomain != section[i].(*dns.NSEC).NextDomain {
t.Errorf("rr %d should have a NextDomain of %d, but has %d", i, section[i].(*dns.NSEC).NextDomain, x.NextDomain)
return false
}
// TypeBitMap
case *dns.A:
if x.A.String() != section[i].(*dns.A).A.String() {
t.Errorf("rr %d should have a Address of %q, but has %q", i, section[i].(*dns.A).A.String(), x.A.String())