Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/k8s.io/client-go/util/cert/cert.go b/vendor/k8s.io/client-go/util/cert/cert.go
new file mode 100644
index 0000000..9fd097a
--- /dev/null
+++ b/vendor/k8s.io/client-go/util/cert/cert.go
@@ -0,0 +1,206 @@
+/*
+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"
+ cryptorand "crypto/rand"
+ "crypto/rsa"
+ "crypto/x509"
+ "crypto/x509/pkix"
+ "encoding/pem"
+ "fmt"
+ "io/ioutil"
+ "math/big"
+ "net"
+ "path"
+ "strings"
+ "time"
+
+ "k8s.io/client-go/util/keyutil"
+)
+
+const duration365d = time.Hour * 24 * 365
+
+// Config contains the basic fields required for creating a certificate
+type Config struct {
+ CommonName string
+ Organization []string
+ AltNames AltNames
+ Usages []x509.ExtKeyUsage
+}
+
+// AltNames contains the domain names and IP addresses that will be added
+// to the API Server's x509 certificate SubAltNames field. The values will
+// be passed directly to the x509.Certificate object.
+type AltNames struct {
+ DNSNames []string
+ IPs []net.IP
+}
+
+// NewSelfSignedCACert creates a CA certificate
+func NewSelfSignedCACert(cfg Config, key crypto.Signer) (*x509.Certificate, error) {
+ now := time.Now()
+ tmpl := x509.Certificate{
+ SerialNumber: new(big.Int).SetInt64(0),
+ Subject: pkix.Name{
+ CommonName: cfg.CommonName,
+ Organization: cfg.Organization,
+ },
+ NotBefore: now.UTC(),
+ NotAfter: now.Add(duration365d * 10).UTC(),
+ KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
+ BasicConstraintsValid: true,
+ IsCA: true,
+ }
+
+ certDERBytes, err := x509.CreateCertificate(cryptorand.Reader, &tmpl, &tmpl, key.Public(), key)
+ if err != nil {
+ return nil, err
+ }
+ return x509.ParseCertificate(certDERBytes)
+}
+
+// GenerateSelfSignedCertKey creates a self-signed certificate and key for the given host.
+// Host may be an IP or a DNS name
+// You may also specify additional subject alt names (either ip or dns names) for the certificate.
+func GenerateSelfSignedCertKey(host string, alternateIPs []net.IP, alternateDNS []string) ([]byte, []byte, error) {
+ return GenerateSelfSignedCertKeyWithFixtures(host, alternateIPs, alternateDNS, "")
+}
+
+// GenerateSelfSignedCertKeyWithFixtures creates a self-signed certificate and key for the given host.
+// Host may be an IP or a DNS name. You may also specify additional subject alt names (either ip or dns names)
+// for the certificate.
+//
+// If fixtureDirectory is non-empty, it is a directory path which can contain pre-generated certs. The format is:
+// <host>_<ip>-<ip>_<alternateDNS>-<alternateDNS>.crt
+// <host>_<ip>-<ip>_<alternateDNS>-<alternateDNS>.key
+// Certs/keys not existing in that directory are created.
+func GenerateSelfSignedCertKeyWithFixtures(host string, alternateIPs []net.IP, alternateDNS []string, fixtureDirectory string) ([]byte, []byte, error) {
+ validFrom := time.Now().Add(-time.Hour) // valid an hour earlier to avoid flakes due to clock skew
+ maxAge := time.Hour * 24 * 365 // one year self-signed certs
+
+ baseName := fmt.Sprintf("%s_%s_%s", host, strings.Join(ipsToStrings(alternateIPs), "-"), strings.Join(alternateDNS, "-"))
+ certFixturePath := path.Join(fixtureDirectory, baseName+".crt")
+ keyFixturePath := path.Join(fixtureDirectory, baseName+".key")
+ if len(fixtureDirectory) > 0 {
+ cert, err := ioutil.ReadFile(certFixturePath)
+ if err == nil {
+ key, err := ioutil.ReadFile(keyFixturePath)
+ if err == nil {
+ return cert, key, nil
+ }
+ return nil, nil, fmt.Errorf("cert %s can be read, but key %s cannot: %v", certFixturePath, keyFixturePath, err)
+ }
+ maxAge = 100 * time.Hour * 24 * 365 // 100 years fixtures
+ }
+
+ caKey, err := rsa.GenerateKey(cryptorand.Reader, 2048)
+ if err != nil {
+ return nil, nil, err
+ }
+
+ caTemplate := x509.Certificate{
+ SerialNumber: big.NewInt(1),
+ Subject: pkix.Name{
+ CommonName: fmt.Sprintf("%s-ca@%d", host, time.Now().Unix()),
+ },
+ NotBefore: validFrom,
+ NotAfter: validFrom.Add(maxAge),
+
+ KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
+ BasicConstraintsValid: true,
+ IsCA: true,
+ }
+
+ caDERBytes, err := x509.CreateCertificate(cryptorand.Reader, &caTemplate, &caTemplate, &caKey.PublicKey, caKey)
+ if err != nil {
+ return nil, nil, err
+ }
+
+ caCertificate, err := x509.ParseCertificate(caDERBytes)
+ if err != nil {
+ return nil, nil, err
+ }
+
+ priv, err := rsa.GenerateKey(cryptorand.Reader, 2048)
+ if err != nil {
+ return nil, nil, err
+ }
+
+ template := x509.Certificate{
+ SerialNumber: big.NewInt(2),
+ Subject: pkix.Name{
+ CommonName: fmt.Sprintf("%s@%d", host, time.Now().Unix()),
+ },
+ NotBefore: validFrom,
+ NotAfter: validFrom.Add(maxAge),
+
+ KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
+ ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
+ BasicConstraintsValid: true,
+ }
+
+ if ip := net.ParseIP(host); ip != nil {
+ template.IPAddresses = append(template.IPAddresses, ip)
+ } else {
+ template.DNSNames = append(template.DNSNames, host)
+ }
+
+ template.IPAddresses = append(template.IPAddresses, alternateIPs...)
+ template.DNSNames = append(template.DNSNames, alternateDNS...)
+
+ derBytes, err := x509.CreateCertificate(cryptorand.Reader, &template, caCertificate, &priv.PublicKey, caKey)
+ if err != nil {
+ return nil, nil, err
+ }
+
+ // Generate cert, followed by ca
+ certBuffer := bytes.Buffer{}
+ if err := pem.Encode(&certBuffer, &pem.Block{Type: CertificateBlockType, Bytes: derBytes}); err != nil {
+ return nil, nil, err
+ }
+ if err := pem.Encode(&certBuffer, &pem.Block{Type: CertificateBlockType, Bytes: caDERBytes}); err != nil {
+ return nil, nil, err
+ }
+
+ // Generate key
+ keyBuffer := bytes.Buffer{}
+ if err := pem.Encode(&keyBuffer, &pem.Block{Type: keyutil.RSAPrivateKeyBlockType, Bytes: x509.MarshalPKCS1PrivateKey(priv)}); err != nil {
+ return nil, nil, err
+ }
+
+ if len(fixtureDirectory) > 0 {
+ if err := ioutil.WriteFile(certFixturePath, certBuffer.Bytes(), 0644); err != nil {
+ return nil, nil, fmt.Errorf("failed to write cert fixture to %s: %v", certFixturePath, err)
+ }
+ if err := ioutil.WriteFile(keyFixturePath, keyBuffer.Bytes(), 0644); err != nil {
+ return nil, nil, fmt.Errorf("failed to write key fixture to %s: %v", certFixturePath, err)
+ }
+ }
+
+ return certBuffer.Bytes(), keyBuffer.Bytes(), nil
+}
+
+func ipsToStrings(ips []net.IP) []string {
+ ss := make([]string, 0, len(ips))
+ for _, ip := range ips {
+ ss = append(ss, ip.String())
+ }
+ return ss
+}