/
twoway.go
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/
twoway.go
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/*
* Tencent is pleased to support the open source community by making TKEStack
* available.
*
* Copyright (C) 2012-2019 Tencent. 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
*
* https://opensource.org/licenses/Apache-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 OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package transport
import (
"crypto/tls"
"crypto/x509"
"io/ioutil"
"net/http"
"tkestack.io/tke/pkg/util/log"
)
// NewTwoWayTLSTransport create a two-way SSL HTTP transport object by given
// certificate file and client certificate and private key file.
func NewTwoWayTLSTransport(caFile string, clientCertFile string, clientKeyFile string) (*http.Transport, error) {
var cert *x509.CertPool
if caFile == "" {
cert = nil
} else {
cert = x509.NewCertPool()
ca, err := ioutil.ReadFile(caFile)
if err != nil {
log.Error("Failed to read the CA certificate file", log.String("file", caFile), log.Err(err))
return nil, err
}
cert.AppendCertsFromPEM(ca)
}
clientCert, err := tls.LoadX509KeyPair(clientCertFile, clientKeyFile)
if err != nil {
log.Error("Failed to load X509 client certificate", log.String("certFile", clientCertFile), log.String("keyFile", clientKeyFile), log.Err(err))
return nil, err
}
return twoWayTransport(cert, &clientCert), nil
}
func twoWayTransport(cert *x509.CertPool, clientCert *tls.Certificate) *http.Transport {
tlsConfig := &tls.Config{}
if cert != nil {
tlsConfig.RootCAs = cert
}
if clientCert != nil {
tlsConfig.Certificates = []tls.Certificate{*clientCert}
}
return Transport(tlsConfig)
}