forked from amdonov/lite-idp
/
tls.go
50 lines (46 loc) · 1.47 KB
/
tls.go
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// Copyright © 2017 Aaron Donovan <amdonov@gmail.com>
//
// 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 idp
import (
"crypto/tls"
"crypto/x509"
"io/ioutil"
"github.com/spf13/viper"
)
// ConfigureTLS not requiring users to present client certificates.
func ConfigureTLS() (*tls.Config, error) {
cert, err := tls.LoadX509KeyPair(viper.GetString("tls-certificate"), viper.GetString("tls-private-key"))
ca := viper.GetString("tls-ca")
if err != nil {
return nil, err
}
tlsConfig := &tls.Config{
Certificates: []tls.Certificate{cert},
//Some but not all operations will require a client cert
ClientAuth: tls.VerifyClientCertIfGiven,
MinVersion: tls.VersionTLS12,
}
if ca != "" {
caCert, err := ioutil.ReadFile(ca)
if err != nil {
return nil, err
}
caCertPool := x509.NewCertPool()
caCertPool.AppendCertsFromPEM(caCert)
tlsConfig.RootCAs = caCertPool
tlsConfig.ClientCAs = caCertPool
}
tlsConfig.BuildNameToCertificate()
return tlsConfig, nil
}