Add ssl certificate verification

controllers/nginx-third-party/nginx/ssl.go

@@ -0,0 +1,72 @@
+/*
+Copyright 2015 The Kubernetes Authors 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.
+*/
+
+package nginx
+
+import (
+	"crypto/x509"
+	"encoding/pem"
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	"github.com/golang/glog"
+)
+
+// AddOrUpdateCertAndKey creates a .pem file wth the cert and the key with the specified name
+func (nginx *NginxManager) AddOrUpdateCertAndKey(name string, cert string, key string) string {
+	pemFileName := sslDirectory + "/" + name + ".pem"
+
+	pem, err := os.Create(pemFileName)
+	if err != nil {
+		glog.Fatalf("Couldn't create pem file %v: %v", pemFileName, err)
+	}
+	defer pem.Close()
+
+	_, err = pem.WriteString(fmt.Sprintf("%v\n%v", key, cert))
+	if err != nil {
+		glog.Fatalf("Couldn't write to pem file %v: %v", pemFileName, err)
+	}
+
+	return pemFileName
+}
+
+// CheckSSLCertificate checks if the certificate and key file are valid
+// returning the result of the validation and the list of hostnames
+// contained in the common name/s
+func (nginx *NginxManager) CheckSSLCertificate(secretName string) ([]string, error) {
+	pemFileName := sslDirectory + "/" + secretName + ".pem"
+	pemCerts, err := ioutil.ReadFile(pemFileName)
+	if err != nil {
+		return []string{}, err
+	}
+
+	var block *pem.Block
+	block, pemCerts = pem.Decode(pemCerts)
+
+	cert, err := x509.ParseCertificate(block.Bytes)
+	if err != nil {
+		return []string{}, err
+	}
+
+	cn := []string{cert.Subject.CommonName}
+	if len(cert.DNSNames) > 0 {
+		cn = append(cn, cert.DNSNames...)
+	}
+
+	glog.V(2).Infof("DNS %v %v\n", cn, len(cn))
+	return cn, nil
+}