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Copy pathcerts.go
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115 lines (95 loc) · 2.88 KB
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/*
* Minio Cloud Storage, (C) 2015, 2016, 2017 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/tls"
"crypto/x509"
"encoding/pem"
"fmt"
"io/ioutil"
"path/filepath"
)
func parsePublicCertFile(certFile string) (x509Certs []*x509.Certificate, err error) {
// Read certificate file.
var data []byte
if data, err = ioutil.ReadFile(certFile); err != nil {
return nil, err
}
// Parse all certs in the chain.
current := data
for len(current) > 0 {
var pemBlock *pem.Block
if pemBlock, current = pem.Decode(current); pemBlock == nil {
return nil, fmt.Errorf("Could not read PEM block from file %s", certFile)
}
var x509Cert *x509.Certificate
if x509Cert, err = x509.ParseCertificate(pemBlock.Bytes); err != nil {
return nil, err
}
x509Certs = append(x509Certs, x509Cert)
}
if len(x509Certs) == 0 {
return nil, fmt.Errorf("Empty public certificate file %s", certFile)
}
return x509Certs, nil
}
func getRootCAs(certsCAsDir string) (*x509.CertPool, error) {
// Get all CA file names.
var caFiles []string
fis, err := ioutil.ReadDir(certsCAsDir)
if err != nil {
return nil, err
}
for _, fi := range fis {
caFiles = append(caFiles, filepath.Join(certsCAsDir, fi.Name()))
}
if len(caFiles) == 0 {
return nil, nil
}
rootCAs, err := x509.SystemCertPool()
if err != nil {
// In some systems like Windows, system cert pool is not supported.
// Hence we create a new cert pool.
rootCAs = x509.NewCertPool()
}
// Load custom root CAs for client requests
for _, caFile := range caFiles {
caCert, err := ioutil.ReadFile(caFile)
if err != nil {
return nil, err
}
rootCAs.AppendCertsFromPEM(caCert)
}
return rootCAs, nil
}
func getSSLConfig() (x509Certs []*x509.Certificate, rootCAs *x509.CertPool, tlsCert *tls.Certificate, secureConn bool, err error) {
if !(isFile(getPublicCertFile()) && isFile(getPrivateKeyFile())) {
return nil, nil, nil, false, nil
}
if x509Certs, err = parsePublicCertFile(getPublicCertFile()); err != nil {
return nil, nil, nil, false, err
}
var cert tls.Certificate
if cert, err = tls.LoadX509KeyPair(getPublicCertFile(), getPrivateKeyFile()); err != nil {
return nil, nil, nil, false, err
}
tlsCert = &cert
if rootCAs, err = getRootCAs(getCADir()); err != nil {
return nil, nil, nil, false, err
}
secureConn = true
return x509Certs, rootCAs, tlsCert, secureConn, nil
}