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minio/cmd/certs.go

138 lines
3.3 KiB

/*
* Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
*
* 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 cmd
import (
"crypto/x509"
"encoding/pem"
"io/ioutil"
"os"
"path/filepath"
"github.com/pkg/errors"
)
// createCertsPath create certs path.
func createCertsPath() error {
certsPath, err := getCertsPath()
if err != nil {
return err
}
return os.MkdirAll(certsPath, 0700)
}
// getCertsPath get certs path.
func getCertsPath() (string, error) {
var certsPath string
configDir, err := getConfigPath()
if err != nil {
return "", err
}
certsPath = filepath.Join(configDir, globalMinioCertsDir)
return certsPath, nil
}
// mustGetCertsPath must get certs path.
func mustGetCertsPath() string {
certsPath, err := getCertsPath()
fatalIf(err, "Failed to get certificate path.")
return certsPath
}
// mustGetCertFile must get cert file.
func mustGetCertFile() string {
return filepath.Join(mustGetCertsPath(), globalMinioCertFile)
}
// mustGetKeyFile must get key file.
func mustGetKeyFile() string {
return filepath.Join(mustGetCertsPath(), globalMinioKeyFile)
}
// isCertFileExists verifies if cert file exists, returns true if
// found, false otherwise.
func isCertFileExists() bool {
st, e := os.Stat(filepath.Join(mustGetCertsPath(), globalMinioCertFile))
// If file exists and is regular return true.
if e == nil && st.Mode().IsRegular() {
return true
}
return false
}
// isKeyFileExists verifies if key file exists, returns true if found,
// false otherwise.
func isKeyFileExists() bool {
st, e := os.Stat(filepath.Join(mustGetCertsPath(), globalMinioKeyFile))
// If file exists and is regular return true.
if e == nil && st.Mode().IsRegular() {
return true
}
return false
}
// isSSL - returns true with both cert and key exists.
func isSSL() bool {
if isCertFileExists() && isKeyFileExists() {
return true
}
return false
}
func readCertificateChain() ([]*x509.Certificate, error) {
certPath := filepath.Join(mustGetCertsPath(), globalMinioCertFile)
file, err := os.Open(certPath)
if err != nil {
return nil, errors.Wrapf(err, "Could not open certificate for reading")
}
defer file.Close()
bytes, err2 := ioutil.ReadAll(file)
if err2 != nil {
return nil, errors.Wrapf(err2, "Could not read certificate contents")
}
return parseCertificateChain(bytes)
}
// Parses certificate chain
func parseCertificateChain(bytes []byte) ([]*x509.Certificate, error) {
var certs []*x509.Certificate
var block *pem.Block
current := bytes
for len(current) > 0 {
block, current = pem.Decode(current)
if block == nil {
return nil, errors.New("Could not PEM block")
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, errors.Wrapf(err, "Could not parse certficiate")
}
certs = append(certs, cert)
}
return certs, nil
}