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/*
* ============LICENSE_START=======================================================
* oom-certservice-k8s-external-provider
* ================================================================================
* Copyright (C) 2020 Nokia. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package csr
import (
"crypto/rand"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
x509utils "onap.org/oom-certservice/k8s-external-provider/src/x509"
)
func FilterFieldsFromCSR(csrBytes []byte, privateKeyBytes []byte) ([]byte, error) {
csr, err := x509utils.DecodeCSR(csrBytes)
if err != nil {
return nil, err
}
key, err := x509utils.DecodePrivateKey(privateKeyBytes)
if err != nil {
return nil, err
}
filteredSubject := filterFieldsFromSubject(csr.Subject)
filteredCsr, err := x509.CreateCertificateRequest(rand.Reader, &x509.CertificateRequest{
Subject: filteredSubject,
DNSNames: csr.DNSNames,
}, key)
if err != nil {
return nil, err
}
csrBytes = pem.EncodeToMemory(&pem.Block{Type: x509utils.PemCsrType, Bytes: filteredCsr})
return csrBytes, nil
}
func filterFieldsFromSubject(subject pkix.Name) pkix.Name {
subject.StreetAddress = []string{}
subject.SerialNumber = ""
subject.PostalCode = []string{}
return subject
}
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