mirror of https://github.com/knative/pkg.git
93 lines
2.6 KiB
Go
93 lines
2.6 KiB
Go
/*
|
|
Copyright 2018 The Knative 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 webhook
|
|
|
|
import (
|
|
"crypto/x509"
|
|
"encoding/pem"
|
|
"fmt"
|
|
"testing"
|
|
|
|
"github.com/google/go-cmp/cmp"
|
|
|
|
. "knative.dev/pkg/logging/testing"
|
|
)
|
|
|
|
func TestCreateCerts(t *testing.T) {
|
|
sKey, serverCertPEM, caCertBytes, err := CreateCerts(TestContextWithLogger(t), "got-the-hook", "knative-webhook")
|
|
if err != nil {
|
|
t.Fatalf("Failed to create certs %v", err)
|
|
}
|
|
|
|
// Test server private key
|
|
p, _ := pem.Decode(sKey)
|
|
if p.Type != "RSA PRIVATE KEY" {
|
|
t.Fatal("Expected the key to be RSA Private key type")
|
|
}
|
|
key, err := x509.ParsePKCS1PrivateKey(p.Bytes)
|
|
if err != nil {
|
|
t.Fatalf("Failed to parse private key %v", err)
|
|
}
|
|
if err := key.Validate(); err != nil {
|
|
t.Fatalf("Failed to validate private key")
|
|
}
|
|
|
|
// Test Server Cert
|
|
sCert, err := validCertificate(serverCertPEM, t)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Test CA Cert
|
|
caParsedCert, err := validCertificate(caCertBytes, t)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Verify domain names
|
|
expectedDNSNames := []string{
|
|
"got-the-hook",
|
|
"got-the-hook.knative-webhook",
|
|
"got-the-hook.knative-webhook.svc",
|
|
"got-the-hook.knative-webhook.svc.cluster.local",
|
|
}
|
|
if diff := cmp.Diff(caParsedCert.DNSNames, expectedDNSNames); diff != "" {
|
|
t.Fatalf("Unexpected CA Cert DNS Name (-want +got) : %v", diff)
|
|
}
|
|
|
|
// Verify Server Cert is Signed by CA Cert
|
|
if err = sCert.CheckSignatureFrom(caParsedCert); err != nil {
|
|
t.Fatal("Failed to verify that the signature on server certificate is from parent CA cert", err)
|
|
}
|
|
}
|
|
|
|
func validCertificate(cert []byte, t *testing.T) (*x509.Certificate, error) {
|
|
t.Helper()
|
|
caCert, _ := pem.Decode(cert)
|
|
if caCert.Type != "CERTIFICATE" {
|
|
return nil, fmt.Errorf("Expected %s but got %s", "CERTIFICATE", caCert.Type)
|
|
}
|
|
parsedCert, err := x509.ParseCertificate(caCert.Bytes)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("Failed to parse cert %v", err)
|
|
}
|
|
if parsedCert.SignatureAlgorithm != x509.SHA256WithRSA {
|
|
return nil, fmt.Errorf("Failed to match signature. Expect %s but got %s", x509.SHA256WithRSA, parsedCert.SignatureAlgorithm)
|
|
}
|
|
return parsedCert, nil
|
|
}
|