csr_test.go

Documentation: k8s.io/client-go/util/cert

     1  /*
     2  Copyright 2016 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package cert
    18  
    19  import (
    20  	"crypto/x509"
    21  	"crypto/x509/pkix"
    22  	"encoding/pem"
    23  	"net"
    24  	"os"
    25  	"testing"
    26  
    27  	"k8s.io/client-go/util/keyutil"
    28  	netutils "k8s.io/utils/net"
    29  )
    30  
    31  func TestMakeCSR(t *testing.T) {
    32  	keyFile := "testdata/dontUseThisKey.pem"
    33  	subject := &pkix.Name{
    34  		CommonName: "kube-worker",
    35  	}
    36  	dnsSANs := []string{"localhost"}
    37  	ipSANs := []net.IP{netutils.ParseIPSloppy("127.0.0.1")}
    38  
    39  	keyData, err := os.ReadFile(keyFile)
    40  	if err != nil {
    41  		t.Fatal(err)
    42  	}
    43  	key, err := keyutil.ParsePrivateKeyPEM(keyData)
    44  	if err != nil {
    45  		t.Fatal(err)
    46  	}
    47  	csrPEM, err := MakeCSR(key, subject, dnsSANs, ipSANs)
    48  	if err != nil {
    49  		t.Error(err)
    50  	}
    51  	csrBlock, rest := pem.Decode(csrPEM)
    52  	if csrBlock == nil {
    53  		t.Fatal("Unable to decode MakeCSR result.")
    54  	}
    55  	if len(rest) != 0 {
    56  		t.Error("Found more than one PEM encoded block in the result.")
    57  	}
    58  	if csrBlock.Type != CertificateRequestBlockType {
    59  		t.Errorf("Found block type %q, wanted 'CERTIFICATE REQUEST'", csrBlock.Type)
    60  	}
    61  	csr, err := x509.ParseCertificateRequest(csrBlock.Bytes)
    62  	if err != nil {
    63  		t.Errorf("Found %v parsing MakeCSR result as a CertificateRequest.", err)
    64  	}
    65  	if csr.Subject.CommonName != subject.CommonName {
    66  		t.Errorf("Wanted %v, got %v", subject, csr.Subject)
    67  	}
    68  	if len(csr.DNSNames) != 1 {
    69  		t.Errorf("Wanted 1 DNS name in the result, got %d", len(csr.DNSNames))
    70  	} else if csr.DNSNames[0] != dnsSANs[0] {
    71  		t.Errorf("Wanted %v, got %v", dnsSANs[0], csr.DNSNames[0])
    72  	}
    73  	if len(csr.IPAddresses) != 1 {
    74  		t.Errorf("Wanted 1 IP address in the result, got %d", len(csr.IPAddresses))
    75  	} else if csr.IPAddresses[0].String() != ipSANs[0].String() {
    76  		t.Errorf("Wanted %v, got %v", ipSANs[0], csr.IPAddresses[0])
    77  	}
    78  }
    79
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