kubernetes serving_test 源码
kubernetes serving_test 代码
文件路径：/staging/src/k8s.io/apiserver/pkg/server/options/serving_test.go
/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package options
import (
"bytes"
cryptorand "crypto/rand"
"crypto/rsa"
"crypto/tls"
"crypto/x509"
"crypto/x509/pkix"
"encoding/base64"
"encoding/pem"
"fmt"
"io/ioutil"
"math/big"
"net"
"os"
"path/filepath"
"reflect"
"strconv"
"strings"
"testing"
"time"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apimachinery/pkg/version"
"k8s.io/apiserver/pkg/server"
"k8s.io/client-go/discovery"
restclient "k8s.io/client-go/rest"
cliflag "k8s.io/component-base/cli/flag"
netutils "k8s.io/utils/net"
)
func setUp(t *testing.T) server.Config {
scheme := runtime.NewScheme()
codecs := serializer.NewCodecFactory(scheme)
config := server.NewConfig(codecs)
return *config
}
type TestCertSpec struct {
host string
names, ips []string // in certificate
}
type NamedTestCertSpec struct {
TestCertSpec
explicitNames []string // as --tls-sni-cert-key explicit names
}
func TestServerRunWithSNI(t *testing.T) {
tests := map[string]struct {
Cert TestCertSpec
SNICerts []NamedTestCertSpec
ExpectedCertIndex int
// passed in the client hello info, "localhost" if unset
ServerName string
// optional ip or hostname to pass to NewLoopbackClientConfig
LoopbackClientBindAddressOverride string
}{
"only one cert": {
Cert: TestCertSpec{
host: "localhost",
ips: []string{"127.0.0.1"},
},
ExpectedCertIndex: -1,
},
"cert with multiple alternate names": {
Cert: TestCertSpec{
host: "localhost",
names: []string{"test.com"},
ips: []string{"127.0.0.1"},
},
ExpectedCertIndex: -1,
ServerName: "test.com",
},
"one SNI and the default cert with the same name": {
Cert: TestCertSpec{
host: "localhost",
ips: []string{"127.0.0.1"},
},
SNICerts: []NamedTestCertSpec{
{
TestCertSpec: TestCertSpec{
host: "localhost",
},
},
},
ExpectedCertIndex: 0,
},
"matching SNI cert": {
Cert: TestCertSpec{
host: "localhost",
ips: []string{"127.0.0.1"},
},
SNICerts: []NamedTestCertSpec{
{
TestCertSpec: TestCertSpec{
host: "test.com",
},
},
},
ExpectedCertIndex: 0,
ServerName: "test.com",
},
"matching IP in SNI cert and the server cert": {
// IPs must not be passed via SNI. Hence, the ServerName in the
// HELLO packet is empty and the server should select the non-SNI cert.
Cert: TestCertSpec{
host: "localhost",
ips: []string{"10.0.0.1", "127.0.0.1"},
},
SNICerts: []NamedTestCertSpec{
{
TestCertSpec: TestCertSpec{
host: "test.com",
ips: []string{"10.0.0.1"},
},
},
},
ExpectedCertIndex: -1,
ServerName: "10.0.0.1",
},
"wildcards": {
Cert: TestCertSpec{
host: "localhost",
ips: []string{"127.0.0.1"},
},
SNICerts: []NamedTestCertSpec{
{
TestCertSpec: TestCertSpec{
host: "test.com",
names: []string{"*.test.com"},
},
},
},
ExpectedCertIndex: 0,
ServerName: "www.test.com",
},
"loopback: LoopbackClientServerNameOverride not on any cert": {
Cert: TestCertSpec{
host: "test.com",
},
SNICerts: []NamedTestCertSpec{
{
TestCertSpec: TestCertSpec{
host: "localhost",
},
},
},
ExpectedCertIndex: 0,
},
"loopback: LoopbackClientServerNameOverride on server cert": {
Cert: TestCertSpec{
host: server.LoopbackClientServerNameOverride,
},
SNICerts: []NamedTestCertSpec{
{
TestCertSpec: TestCertSpec{
host: "localhost",
},
},
},
ExpectedCertIndex: 0,
},
"loopback: LoopbackClientServerNameOverride on SNI cert": {
Cert: TestCertSpec{
host: "localhost",
},
SNICerts: []NamedTestCertSpec{
{
TestCertSpec: TestCertSpec{
host: server.LoopbackClientServerNameOverride,
},
},
},
ExpectedCertIndex: -1,
},
"loopback: bind to 0.0.0.0 => loopback uses localhost": {
Cert: TestCertSpec{
host: "localhost",
},
ExpectedCertIndex: -1,
LoopbackClientBindAddressOverride: "0.0.0.0",
},
}
specToName := func(spec TestCertSpec) string {
name := spec.host + "_" + strings.Join(spec.names, ",") + "_" + strings.Join(spec.ips, ",")
return strings.Replace(name, "*", "star", -1)
}
for title := range tests {
test := tests[title]
t.Run(title, func(t *testing.T) {
t.Parallel()
// create server cert
certDir := "testdata/" + specToName(test.Cert)
serverCertBundleFile := filepath.Join(certDir, "cert")
serverKeyFile := filepath.Join(certDir, "key")
err := getOrCreateTestCertFiles(serverCertBundleFile, serverKeyFile, test.Cert)
if err != nil {
t.Fatalf("failed to create server cert: %v", err)
}
ca, err := caCertFromBundle(serverCertBundleFile)
if err != nil {
t.Fatalf("failed to extract ca cert from server cert bundle: %v", err)
}
caCerts := []*x509.Certificate{ca}
// create SNI certs
var namedCertKeys []cliflag.NamedCertKey
serverSig, err := certFileSignature(serverCertBundleFile, serverKeyFile)
if err != nil {
t.Fatalf("failed to get server cert signature: %v", err)
}
signatures := map[string]int{
serverSig: -1,
}
for j, c := range test.SNICerts {
sniDir := filepath.Join(certDir, specToName(c.TestCertSpec))
certBundleFile := filepath.Join(sniDir, "cert")
keyFile := filepath.Join(sniDir, "key")
err := getOrCreateTestCertFiles(certBundleFile, keyFile, c.TestCertSpec)
if err != nil {
t.Fatalf("failed to create SNI cert %d: %v", j, err)
}
namedCertKeys = append(namedCertKeys, cliflag.NamedCertKey{
KeyFile: keyFile,
CertFile: certBundleFile,
Names: c.explicitNames,
})
ca, err := caCertFromBundle(certBundleFile)
if err != nil {
t.Fatalf("failed to extract ca cert from SNI cert %d: %v", j, err)
}
caCerts = append(caCerts, ca)
// store index in namedCertKeys with the signature as the key
sig, err := certFileSignature(certBundleFile, keyFile)
if err != nil {
t.Fatalf("failed get SNI cert %d signature: %v", j, err)
}
signatures[sig] = j
}
stopCh := make(chan struct{})
defer close(stopCh)
// launch server
config := setUp(t)
v := fakeVersion()
config.Version = &v
config.EnableIndex = true
secureOptions := (&SecureServingOptions{
BindAddress: netutils.ParseIPSloppy("127.0.0.1"),
BindPort: 6443,
ServerCert: GeneratableKeyCert{
CertKey: CertKey{
CertFile: serverCertBundleFile,
KeyFile: serverKeyFile,
},
},
SNICertKeys: namedCertKeys,
}).WithLoopback()
// use a random free port
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("failed to listen on 127.0.0.1:0")
}
secureOptions.Listener = ln
// get port
secureOptions.BindPort = ln.Addr().(*net.TCPAddr).Port
config.LoopbackClientConfig = &restclient.Config{}
if err := secureOptions.ApplyTo(&config.SecureServing, &config.LoopbackClientConfig); err != nil {
t.Fatalf("failed applying the SecureServingOptions: %v", err)
}
s, err := config.Complete(nil).New("test", server.NewEmptyDelegate())
if err != nil {
t.Fatalf("failed creating the server: %v", err)
}
// add poststart hook to know when the server is up.
startedCh := make(chan struct{})
s.AddPostStartHookOrDie("test-notifier", func(context server.PostStartHookContext) error {
close(startedCh)
return nil
})
preparedServer := s.PrepareRun()
preparedServerErrors := make(chan error)
go func() {
if err := preparedServer.Run(stopCh); err != nil {
preparedServerErrors <- err
}
}()
// load ca certificates into a pool
roots := x509.NewCertPool()
for _, caCert := range caCerts {
roots.AddCert(caCert)
}
<-startedCh
// try to dial
addr := fmt.Sprintf("localhost:%d", secureOptions.BindPort)
t.Logf("Dialing %s as %q", addr, test.ServerName)
conn, err := tls.Dial("tcp", addr, &tls.Config{
RootCAs: roots,
ServerName: test.ServerName, // used for SNI in the client HELLO packet
})
if err != nil {
t.Fatalf("failed to connect: %v", err)
}
defer conn.Close()
// check returned server certificate
sig := x509CertSignature(conn.ConnectionState().PeerCertificates[0])
gotCertIndex, found := signatures[sig]
if !found {
t.Errorf("unknown signature returned from server: %s", sig)
}
if gotCertIndex != test.ExpectedCertIndex {
t.Errorf("expected cert index %d, got cert index %d", test.ExpectedCertIndex, gotCertIndex)
}
// check that the loopback client can connect
host := "127.0.0.1"
if len(test.LoopbackClientBindAddressOverride) != 0 {
host = test.LoopbackClientBindAddressOverride
}
s.LoopbackClientConfig.Host = net.JoinHostPort(host, strconv.Itoa(secureOptions.BindPort))
client, err := discovery.NewDiscoveryClientForConfig(s.LoopbackClientConfig)
if err != nil {
t.Fatalf("failed to create loopback client: %v", err)
}
got, err := client.ServerVersion()
if err != nil {
t.Fatalf("failed to connect with loopback client: %v", err)
}
if expected := &v; !reflect.DeepEqual(got, expected) {
t.Errorf("loopback client didn't get correct version info: expected=%v got=%v", expected, got)
}
select {
case err := <-preparedServerErrors:
t.Fatalf("preparedServer failed with error: %v", err)
default:
}
})
}
}
func parseIPList(ips []string) []net.IP {
var netIPs []net.IP
for _, ip := range ips {
netIPs = append(netIPs, netutils.ParseIPSloppy(ip))
}
return netIPs
}
func getOrCreateTestCertFiles(certFileName, keyFileName string, spec TestCertSpec) (err error) {
if _, err := os.Stat(certFileName); err == nil {
if _, err := os.Stat(keyFileName); err == nil {
return nil
}
}
certPem, keyPem, err := generateSelfSignedCertKey(spec.host, parseIPList(spec.ips), spec.names)
if err != nil {
return err
}
os.MkdirAll(filepath.Dir(certFileName), os.FileMode(0755))
err = ioutil.WriteFile(certFileName, certPem, os.FileMode(0755))
if err != nil {
return err
}
os.MkdirAll(filepath.Dir(keyFileName), os.FileMode(0755))
err = ioutil.WriteFile(keyFileName, keyPem, os.FileMode(0755))
if err != nil {
return err
}
return nil
}
func caCertFromBundle(bundlePath string) (*x509.Certificate, error) {
pemData, err := ioutil.ReadFile(bundlePath)
if err != nil {
return nil, err
}
// fetch last block
var block *pem.Block
for {
var nextBlock *pem.Block
nextBlock, pemData = pem.Decode(pemData)
if nextBlock == nil {
if block == nil {
return nil, fmt.Errorf("no certificate found in %q", bundlePath)
}
return x509.ParseCertificate(block.Bytes)
}
block = nextBlock
}
}
func x509CertSignature(cert *x509.Certificate) string {
return base64.StdEncoding.EncodeToString(cert.Signature)
}
func certFileSignature(certFile, keyFile string) (string, error) {
cert, err := tls.LoadX509KeyPair(certFile, keyFile)
if err != nil {
return "", err
}
return certSignature(cert)
}
func certSignature(cert tls.Certificate) (string, error) {
x509Certs, err := x509.ParseCertificates(cert.Certificate[0])
if err != nil {
return "", err
}
return x509CertSignature(x509Certs[0]), nil
}
func fakeVersion() version.Info {
return version.Info{
Major: "42",
Minor: "42",
GitVersion: "42",
GitCommit: "34973274ccef6ab4dfaaf86599792fa9c3fe4689",
GitTreeState: "Dirty",
}
}
// generateSelfSignedCertKey creates a self-signed certificate and key for the given host.
// Host may be an IP or a DNS name
// You may also specify additional subject alt names (either ip or dns names) for the certificate
func generateSelfSignedCertKey(host string, alternateIPs []net.IP, alternateDNS []string) ([]byte, []byte, error) {
priv, err := rsa.GenerateKey(cryptorand.Reader, 2048)
if err != nil {
return nil, nil, err
}
template := x509.Certificate{
SerialNumber: big.NewInt(1),
Subject: pkix.Name{
CommonName: fmt.Sprintf("%s@%d", host, time.Now().Unix()),
},
NotBefore: time.Unix(0, 0),
NotAfter: time.Now().Add(time.Hour * 24 * 365 * 100),
KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
BasicConstraintsValid: true,
IsCA: true,
}
if ip := netutils.ParseIPSloppy(host); ip != nil {
template.IPAddresses = append(template.IPAddresses, ip)
} else {
template.DNSNames = append(template.DNSNames, host)
}
template.IPAddresses = append(template.IPAddresses, alternateIPs...)
template.DNSNames = append(template.DNSNames, alternateDNS...)
derBytes, err := x509.CreateCertificate(cryptorand.Reader, &template, &template, &priv.PublicKey, priv)
if err != nil {
return nil, nil, err
}
// Generate cert
certBuffer := bytes.Buffer{}
if err := pem.Encode(&certBuffer, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes}); err != nil {
return nil, nil, err
}
// Generate key
keyBuffer := bytes.Buffer{}
if err := pem.Encode(&keyBuffer, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(priv)}); err != nil {
return nil, nil, err
}
return certBuffer.Bytes(), keyBuffer.Bytes(), nil
}
相关信息
相关文章
kubernetes api_enablement_test 源码
kubernetes authentication_dynamic_request_header 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony