forked from skynetservices/skydns
/
server_test.go
497 lines (457 loc) · 16.3 KB
/
server_test.go
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// Copyright (c) 2014 The SkyDNS Authors. All rights reserved.
// Use of this source code is governed by The MIT License (MIT) that can be
// found in the LICENSE file.
package main
// etcd needs to be running on http://127.0.0.1:4001
import (
"encoding/json"
"strconv"
"strings"
"sync"
"testing"
"time"
"github.com/coreos/go-etcd/etcd"
"github.com/coreos/go-log/log"
"github.com/miekg/dns"
)
// Keep global port counter that increments with 10 for each
// new call to newTestServer. The dns server is started on port 'Port'.
var Port = 9400
var StrPort = "9400" // string equivalent of Port
func addService(t *testing.T, s *server, k string, ttl uint64, m *Service) {
b, err := json.Marshal(m)
if err != nil {
t.Fatal(err)
}
path, _ := Path(k)
_, err = s.client.Create(path, string(b), ttl)
if err != nil {
// TODO(miek): allow for existing keys...
t.Fatal(err)
}
}
func delService(t *testing.T, s *server, k string) {
path, _ := Path(k)
_, err := s.client.Delete(path, false)
if err != nil {
t.Fatal(err)
}
}
func newTestServer(t *testing.T) *server {
Port += 10
StrPort = strconv.Itoa(Port)
s := new(server)
client := etcd.NewClient([]string{"http://127.0.0.1:4001"})
client.SyncCluster()
s.group = new(sync.WaitGroup)
s.client = client
s.config = new(Config)
s.config.DnsAddr = "127.0.0.1:" + StrPort
s.config.Nameservers = []string{"8.8.4.4:53"}
s.config.Domain = "skydns.test."
s.config.Hostmaster = "hostmaster.skydns.test."
s.config.DomainLabels = 2
s.config.Priority = 10
s.config.Ttl = 3600
s.config.log = log.New("skydns", false, log.NullSink())
go s.Run()
return s
}
func newTestServerDNSSEC(t *testing.T) *server {
var err error
s := newTestServer(t)
s.config.PubKey = newDNSKEY("skydns.test. IN DNSKEY 256 3 5 AwEAAaXfO+DOBMJsQ5H4TfiabwSpqE4cGL0Qlvh5hrQumrjr9eNSdIOjIHJJKCe56qBU5mH+iBlXP29SVf6UiiMjIrAPDVhClLeWFe0PC+XlWseAyRgiLHdQ8r95+AfkhO5aZgnCwYf9FGGSaT0+CRYN+PyDbXBTLK5FN+j5b6bb7z+d")
s.config.KeyTag = s.config.PubKey.KeyTag()
s.config.PrivKey, err = s.config.PubKey.ReadPrivateKey(strings.NewReader(`Private-key-format: v1.3
Algorithm: 5 (RSASHA1)
Modulus: pd874M4EwmxDkfhN+JpvBKmoThwYvRCW+HmGtC6auOv141J0g6MgckkoJ7nqoFTmYf6IGVc/b1JV/pSKIyMisA8NWEKUt5YV7Q8L5eVax4DJGCIsd1Dyv3n4B+SE7lpmCcLBh/0UYZJpPT4JFg34/INtcFMsrkU36PlvptvvP50=
PublicExponent: AQAB
PrivateExponent: C6e08GXphbPPx6j36ZkIZf552gs1XcuVoB4B7hU8P/Qske2QTFOhCwbC8I+qwdtVWNtmuskbpvnVGw9a6X8lh7Z09RIgzO/pI1qau7kyZcuObDOjPw42exmjqISFPIlS1wKA8tw+yVzvZ19vwRk1q6Rne+C1romaUOTkpA6UXsE=
Prime1: 2mgJ0yr+9vz85abrWBWnB8Gfa1jOw/ccEg8ZToM9GLWI34Qoa0D8Dxm8VJjr1tixXY5zHoWEqRXciTtY3omQDQ==
Prime2: wmxLpp9rTzU4OREEVwF43b/TxSUBlUq6W83n2XP8YrCm1nS480w4HCUuXfON1ncGYHUuq+v4rF+6UVI3PZT50Q==
Exponent1: wkdTngUcIiau67YMmSFBoFOq9Lldy9HvpVzK/R0e5vDsnS8ZKTb4QJJ7BaG2ADpno7pISvkoJaRttaEWD3a8rQ==
Exponent2: YrC8OglEXIGkV3tm2494vf9ozPL6+cBkFsPPg9dXbvVCyyuW0pGHDeplvfUqs4nZp87z8PsoUL+LAUqdldnwcQ==
Coefficient: mMFr4+rDY5V24HZU3Oa5NEb55iQ56ZNa182GnNhWqX7UqWjcUUGjnkCy40BqeFAQ7lp52xKHvP5Zon56mwuQRw==
`), "stdin")
if err != nil {
t.Fatal(err)
}
return s
}
func TestDNSExpire(t *testing.T) {
s := newTestServerDNSSEC(t)
defer s.Stop()
serv := services[0]
addService(t, s, serv.key, 1, &Service{Host: serv.Host, Port: serv.Port})
// defer delService(t, s, serv.key) // It will delete itself...magically
c := new(dns.Client)
tc := dnsTestCases[0]
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
if tc.dnssec == true {
m.SetEdns0(4096, true)
}
resp, _, err := c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatalf("failing: %s: %s\n", m.String(), err.Error())
}
if resp.Rcode != dns.RcodeSuccess {
t.Logf("%v\n", resp)
t.Fail()
}
// Sleep to let it expire.
time.Sleep(2 * time.Second)
resp, _, err = c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Errorf("failing: %s\n", err.Error())
}
if resp.Rcode != dns.RcodeNameError {
t.Logf("%v\n", resp)
t.Fail()
}
}
func TestDNSForward(t *testing.T) {
s := newTestServer(t)
defer s.Stop()
c := new(dns.Client)
m := new(dns.Msg)
m.SetQuestion("www.example.com.", dns.TypeA)
resp, _, err := c.Exchange(m, "localhost:"+StrPort)
if err != nil {
t.Fatal(err)
}
if len(resp.Answer) == 0 || resp.Rcode != dns.RcodeSuccess {
t.Fatal("Answer expected to have A records or rcode not equal to RcodeSuccess")
}
// TCP
c.Net = "tcp"
resp, _, err = c.Exchange(m, "localhost:"+StrPort)
if err != nil {
t.Fatal(err)
}
if len(resp.Answer) == 0 || resp.Rcode != dns.RcodeSuccess {
t.Fatal("Answer expected to have A records or rcode not equal to RcodeSuccess")
}
}
func TestDNSTtlRRset(t *testing.T) {
s := newTestServerDNSSEC(t)
defer s.Stop()
ttl := uint32(60)
for _, serv := range services {
m := &Service{Host: serv.Host, Port: serv.Port}
addService(t, s, serv.key, uint64(ttl), m)
defer delService(t, s, serv.key)
ttl += 60
}
c := new(dns.Client)
tc := dnsTestCases[7]
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
if tc.dnssec == true {
m.SetEdns0(4096, true)
}
resp, _, err := c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatalf("failing: %s: %s\n", m.String(), err.Error())
}
t.Logf("%s\n", resp)
ttl = 60
for i, a := range resp.Answer {
if a.Header().Ttl != ttl {
t.Errorf("Answer %d should have a Header TTL of %d, but has %d", i, ttl, a.Header().Ttl)
}
}
}
func TestDNS(t *testing.T) {
s := newTestServerDNSSEC(t)
defer s.Stop()
for _, serv := range services {
m := &Service{Host: serv.Host, Port: serv.Port}
addService(t, s, serv.key, 0, m)
defer delService(t, s, serv.key)
}
c := new(dns.Client)
for _, tc := range dnsTestCases {
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
if tc.dnssec == true {
m.SetEdns0(4096, true)
}
resp, _, err := c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatalf("failing: %s: %s\n", m.String(), err.Error())
}
t.Logf("%s\n", resp)
if len(resp.Answer) != len(tc.Answer) {
t.Fatalf("response for %q contained %d results, %d expected", tc.Qname, len(resp.Answer), len(tc.Answer))
}
for i, a := range resp.Answer {
if a.Header().Name != tc.Answer[i].Header().Name {
t.Errorf("answer %d should have a Header Name of %q, but has %q", i, tc.Answer[i].Header().Name, a.Header().Name)
}
if a.Header().Ttl != tc.Answer[i].Header().Ttl {
t.Errorf("Answer %d should have a Header TTL of %d, but has %d", i, tc.Answer[i].Header().Ttl, a.Header().Ttl)
}
if a.Header().Rrtype != tc.Answer[i].Header().Rrtype {
t.Errorf("answer %d should have a header response type of %d, but has %d", i, tc.Answer[i].Header().Rrtype, a.Header().Rrtype)
}
switch x := a.(type) {
case *dns.SRV:
if x.Priority != tc.Answer[i].(*dns.SRV).Priority {
t.Errorf("answer %d should have a Priority of %d, but has %d", i, tc.Answer[i].(*dns.SRV).Priority, x.Priority)
}
if x.Weight != tc.Answer[i].(*dns.SRV).Weight {
t.Errorf("answer %d should have a Weight of %d, but has %d", i, tc.Answer[i].(*dns.SRV).Weight, x.Weight)
}
if x.Port != tc.Answer[i].(*dns.SRV).Port {
t.Errorf("answer %d should have a Port of %d, but has %d", i, tc.Answer[i].(*dns.SRV).Port, x.Port)
}
if x.Target != tc.Answer[i].(*dns.SRV).Target {
t.Errorf("answer %d should have a Target of %q, but has %q", i, tc.Answer[i].(*dns.SRV).Target, x.Target)
}
case *dns.A:
if x.A.String() != tc.Answer[i].(*dns.A).A.String() {
t.Errorf("answer %d should have a Address of %q, but has %q", i, tc.Answer[i].(*dns.A).A.String(), x.A.String())
}
case *dns.AAAA:
if x.AAAA.String() != tc.Answer[i].(*dns.AAAA).AAAA.String() {
t.Errorf("answer %d should have a Address of %q, but has %q", i, tc.Answer[i].(*dns.AAAA).AAAA.String(), x.AAAA.String())
}
case *dns.DNSKEY:
tt := tc.Answer[i].(*dns.DNSKEY)
if x.Flags != tt.Flags {
t.Errorf("DNSKEY flags should be %q, but is %q", x.Flags, tt.Flags)
}
if x.Protocol != tt.Protocol {
t.Errorf("DNSKEY protocol should be %q, but is %q", x.Protocol, tt.Protocol)
}
if x.Algorithm != tt.Algorithm {
t.Errorf("DNSKEY algorithm should be %q, but is %q", x.Algorithm, tt.Algorithm)
}
case *dns.RRSIG:
tt := tc.Answer[i].(*dns.RRSIG)
if x.TypeCovered != tt.TypeCovered {
t.Errorf("RRSIG type-covered should be %d, but is %d", x.TypeCovered, tt.TypeCovered)
}
if x.Algorithm != tt.Algorithm {
t.Errorf("RRSIG algorithm should be %d, but is %d", x.Algorithm, tt.Algorithm)
}
if x.Labels != tt.Labels {
t.Errorf("RRSIG label should be %d, but is %d", x.Labels, tt.Labels)
}
if x.OrigTtl != tt.OrigTtl {
t.Errorf("RRSIG orig-ttl should be %d, but is %d", x.OrigTtl, tt.OrigTtl)
}
if x.KeyTag != tt.KeyTag {
t.Errorf("RRSIG key-tag should be %d, but is %d", x.KeyTag, tt.KeyTag)
}
if x.SignerName != tt.SignerName {
t.Errorf("RRSIG signer-name should be %q, but is %q", x.SignerName, tt.SignerName)
}
case *dns.SOA:
tt := tc.Answer[i].(*dns.SOA)
if x.Ns != tt.Ns {
t.Errorf("SOA nameserver should be %q, but is %q", x.Ns, tt.Ns)
}
}
for i, n := range resp.Ns {
i = i
switch x := n.(type) {
case *dns.SOA:
tt := tc.Answer[i].(*dns.SOA)
if x.Ns != tt.Ns {
t.Errorf("SOA nameserver should be %q, but is %q", x.Ns, tt.Ns)
}
case *dns.NS:
tt := tc.Answer[i].(*dns.NS)
if x.Ns != tt.Ns {
t.Errorf("NS nameserver should be %q, but is %q", x.Ns, tt.Ns)
}
case *dns.NSEC3:
// TODO(miek)
}
}
for i, e := range resp.Extra {
switch x := e.(type) {
case *dns.A:
if x.A.String() != tc.Extra[i].(*dns.A).A.String() {
t.Errorf("extra %d should have a address of %q, but has %q", i, tc.Extra[i].(*dns.A).A.String(), x.A.String())
}
case *dns.AAAA:
if x.AAAA.String() != tc.Extra[i].(*dns.AAAA).AAAA.String() {
t.Errorf("extra %d should have a address of %q, but has %q", i, tc.Extra[i].(*dns.AAAA).AAAA.String(), x.AAAA.String())
}
}
}
}
}
}
type dnsTestCase struct {
Qname string
Qtype uint16
dnssec bool
Answer []dns.RR
Ns []dns.RR
Extra []dns.RR
}
var services = []*Service{
{Host: "server1", Port: 8080, key: "100.server1.development.region1.skydns.test."},
{Host: "server2", Port: 80, key: "101.server2.production.region1.skydns.test."},
{Host: "server3", key: "103.server4.development.region2.skydns.test."},
{Host: "10.0.0.1", key: "104.server1.development.region1.skydns.test."},
{Host: "2001::8:8:8:8", key: "105.server3.production.region2.skydns.test."},
}
var dnsTestCases = []dnsTestCase{
// Full Name Test
{
Qname: "100.server1.development.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("100.server1.development.region1.skydns.test. 3600 SRV 10 100 8080 server1.")},
},
// SOA Record Test
{
Qname: "skydns.test.", Qtype: dns.TypeSOA,
Answer: []dns.RR{newSOA("skydns.test. 3600 SOA ns1.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// NS Record Test
{
Qname: "skydns.test.", Qtype: dns.TypeNS,
Answer: []dns.RR{newNS("skydns.test. 3600 NS ns1.dns.skydns.test.")},
},
// A Record For NS Record Test
{
Qname: "ns1.dns.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{newA("ns1.dns.skydns.test. 3600 A 127.0.0.1")},
},
// A Record Test
{
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// A Record Test with SRV
{
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("104.server1.development.region1.skydns.test. 3600 SRV 10 100 0 104.server1.development.region1.skydns.test.")},
Extra: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// AAAAA Record Test
{
Qname: "105.server3.production.region2.skydns.test.", Qtype: dns.TypeAAAA,
Answer: []dns.RR{newAAAA("105.server3.production.region2.skydns.test. 3600 AAAA 2001::8:8:8:8")},
},
// Subdomain Test
{
Qname: "region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("region1.skydns.test. 3600 SRV 10 33 8080 server1."),
newSRV("region1.skydns.test. 3600 SRV 10 33 0 104.server1.development.region1.skydns.test."),
newSRV("region1.skydns.test. 3600 SRV 10 33 80 server2")},
Extra: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// Wildcard Test
{
Qname: "*.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("*.region1.skydns.test. 3600 SRV 10 33 8080 server1."),
newSRV("*.region1.skydns.test. 3600 SRV 10 33 0 104.server1.development.region1.skydns.test."),
newSRV("*.region1.skydns.test. 3600 SRV 10 33 80 server2")},
Extra: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// Wildcard Test
{
Qname: "production.*.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("production.*.skydns.test. 3600 IN SRV 10 50 80 server2."),
newSRV("production.*.skydns.test. 3600 IN SRV 10 50 0 105.server3.production.region2.skydns.test.")},
Extra: []dns.RR{newAAAA("105.server3.production.region2.skydns.test. 3600 IN AAAA 2001::8:8:8:8")},
},
// NXDOMAIN Test
{
Qname: "doesnotexist.skydns.test.", Qtype: dns.TypeA,
Ns: []dns.RR{newSOA("skydns.test. 3600 SOA ns1.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// NODATA Test
{
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeTXT,
Ns: []dns.RR{newSOA("skydns.test. 3600 SOA ns1.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// DNSSEC
// DNSKEY Test
{
dnssec: true,
Qname: "skydns.test.", Qtype: dns.TypeDNSKEY,
Answer: []dns.RR{newDNSKEY("skydns.test. 3600 DNSKEY 256 3 5 deadbeaf"),
newRRSIG("skydns.test. 3600 RRSIG DNSKEY 5 2 3600 0 0 51945 skydns.test. deadbeaf")},
},
// Signed Response Test
{
dnssec: true,
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("104.server1.development.region1.skydns.test. 3600 SRV 10 100 0 104.server1.development.region1.skydns.test."),
newRRSIG("104.server1.development.region1.skydns.test. 3600 RRSIG SRV 5 6 3600 0 0 51945 skydns.test. deadbeaf")},
Extra: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1"),
newRRSIG("104.server1.developmen.region1.skydns.test. 3600 RRSIG A 5 6 3600 0 0 51945 skydns.test. deadbeaf")},
},
// NXDOMAIN Test
// NODATA Test
// Wildcard Test
}
func newA(rr string) *dns.A { r, _ := dns.NewRR(rr); return r.(*dns.A) }
func newAAAA(rr string) *dns.AAAA { r, _ := dns.NewRR(rr); return r.(*dns.AAAA) }
func newSRV(rr string) *dns.SRV { r, _ := dns.NewRR(rr); return r.(*dns.SRV) }
func newSOA(rr string) *dns.SOA { r, _ := dns.NewRR(rr); return r.(*dns.SOA) }
func newNS(rr string) *dns.NS { r, _ := dns.NewRR(rr); return r.(*dns.NS) }
func newDNSKEY(rr string) *dns.DNSKEY { r, _ := dns.NewRR(rr); return r.(*dns.DNSKEY) }
func newRRSIG(rr string) *dns.RRSIG { r, _ := dns.NewRR(rr); return r.(*dns.RRSIG) }
func newNNSEC3(rr string) *dns.NSEC3 { r, _ := dns.NewRR(rr); return r.(*dns.NSEC3) }
func BenchmarkDNSSingle(b *testing.B) {
b.StopTimer()
t := new(testing.T)
s := newTestServerDNSSEC(t)
defer s.Stop()
serv := services[0]
addService(t, s, serv.key, 0, &Service{Host: serv.Host, Port: serv.Port})
defer delService(t, s, serv.key)
c := new(dns.Client)
tc := dnsTestCases[0]
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
b.StartTimer()
for i := 0; i < b.N; i++ {
c.Exchange(m, "127.0.0.1:"+StrPort)
}
}
func BenchmarkDNSWildcard(b *testing.B) {
b.StopTimer()
t := new(testing.T)
s := newTestServerDNSSEC(t)
defer s.Stop()
for _, serv := range services {
m := &Service{Host: serv.Host, Port: serv.Port}
addService(t, s, serv.key, 0, m)
defer delService(t, s, serv.key)
}
c := new(dns.Client)
tc := dnsTestCases[8] // Wildcard Test
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
b.StartTimer()
for i := 0; i < b.N; i++ {
c.Exchange(m, "127.0.0.1:"+StrPort)
}
}
func BenchmarkDNSSECSingle(b *testing.B) {
b.StopTimer()
t := new(testing.T)
s := newTestServerDNSSEC(t)
defer s.Stop()
serv := services[0]
addService(t, s, serv.key, 0, &Service{Host: serv.Host, Port: serv.Port})
defer delService(t, s, serv.key)
c := new(dns.Client)
tc := dnsTestCases[0]
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
m.SetEdns0(4096, true)
b.StartTimer()
for i := 0; i < b.N; i++ {
c.Exchange(m, "127.0.0.1:"+StrPort)
}
}
// BenchmarkDNSSECError(b *testing.B) {}