mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-10 08:20:23 +00:00
74 lines
2.1 KiB
Go
74 lines
2.1 KiB
Go
/*
|
|
Copyright 2014 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 cert
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/x509"
|
|
"encoding/pem"
|
|
"errors"
|
|
)
|
|
|
|
const (
|
|
// CertificateBlockType is a possible value for pem.Block.Type.
|
|
CertificateBlockType = "CERTIFICATE"
|
|
// CertificateRequestBlockType is a possible value for pem.Block.Type.
|
|
CertificateRequestBlockType = "CERTIFICATE REQUEST"
|
|
)
|
|
|
|
// ParseCertsPEM returns the x509.Certificates contained in the given PEM-encoded byte array
|
|
// Returns an error if a certificate could not be parsed, or if the data does not contain any certificates
|
|
func ParseCertsPEM(pemCerts []byte) ([]*x509.Certificate, error) {
|
|
ok := false
|
|
certs := []*x509.Certificate{}
|
|
for len(pemCerts) > 0 {
|
|
var block *pem.Block
|
|
block, pemCerts = pem.Decode(pemCerts)
|
|
if block == nil {
|
|
break
|
|
}
|
|
// Only use PEM "CERTIFICATE" blocks without extra headers
|
|
if block.Type != CertificateBlockType || len(block.Headers) != 0 {
|
|
continue
|
|
}
|
|
|
|
cert, err := x509.ParseCertificate(block.Bytes)
|
|
if err != nil {
|
|
return certs, err
|
|
}
|
|
|
|
certs = append(certs, cert)
|
|
ok = true
|
|
}
|
|
|
|
if !ok {
|
|
return certs, errors.New("data does not contain any valid RSA or ECDSA certificates")
|
|
}
|
|
return certs, nil
|
|
}
|
|
|
|
// EncodeCertificates returns the PEM-encoded byte array that represents by the specified certs.
|
|
func EncodeCertificates(certs ...*x509.Certificate) ([]byte, error) {
|
|
b := bytes.Buffer{}
|
|
for _, cert := range certs {
|
|
if err := pem.Encode(&b, &pem.Block{Type: CertificateBlockType, Bytes: cert.Raw}); err != nil {
|
|
return []byte{}, err
|
|
}
|
|
}
|
|
return b.Bytes(), nil
|
|
}
|