[VOL-3678] First implementation of the BBSim-sadis-server
Change-Id: I5077a8f861f4cc6af9759f31a4a415042c05eba3
diff --git a/vendor/k8s.io/client-go/util/cert/pem.go b/vendor/k8s.io/client-go/util/cert/pem.go
new file mode 100644
index 0000000..c775123
--- /dev/null
+++ b/vendor/k8s.io/client-go/util/cert/pem.go
@@ -0,0 +1,73 @@
+/*
+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
+}