/
certificate.go
60 lines (46 loc) · 1.68 KB
/
certificate.go
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/*
Copyright 2019 Red Hat, Inc.
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 certificaterequest
import (
"crypto/x509"
"encoding/pem"
"fmt"
certmanv1alpha1 "github.com/openshift/certman-operator/pkg/apis/certman/v1alpha1"
corev1 "k8s.io/api/core/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// GetCertificate returns a certificate to the caller after retrieving the certificates secret.
func GetCertificate(kubeClient client.Client, cr *certmanv1alpha1.CertificateRequest) (*x509.Certificate, error) {
crtSecret, err := GetSecret(kubeClient, cr.Spec.CertificateSecret.Name, cr.Namespace)
if err != nil {
return nil, err
}
data := crtSecret.Data[corev1.TLSCertKey]
if data == nil {
return nil, fmt.Errorf("certificate data was not found in secret %v", cr.Spec.CertificateSecret.Name)
}
certificate, err := ParseCertificateData(data)
if err != nil {
return nil, err
}
return certificate, nil
}
// ParseCertificateData returns a decoded x509 certificate to the caller.
func ParseCertificateData(data []byte) (*x509.Certificate, error) {
keyBlock, _ := pem.Decode(data)
certificate, err := x509.ParseCertificate(keyBlock.Bytes)
if err != nil {
return nil, err
}
return certificate, nil
}