|
|
|
package rtls
|
|
|
|
|
|
|
|
import (
|
|
|
|
"crypto/tls"
|
|
|
|
"crypto/x509"
|
|
|
|
"fmt"
|
|
|
|
"io/ioutil"
|
|
|
|
)
|
|
|
|
|
|
|
|
// CreateClientConfig creates a new tls.Config for use by a client. The certFile and keyFile
|
|
|
|
// parameters are the paths to the client's certificate and key files, which will be used to
|
|
|
|
// authenticate the client to the server. The caCertFile parameter is the path to the CA
|
|
|
|
// certificate file, which the client will use to verify any certificate presented by the
|
|
|
|
// server . If noverify is true, the client will not verify the server's certificate. If
|
|
|
|
// tls1011 is true, the client will accept TLS 1.0 or 1.1. Otherwise, it will require TLS 1.2
|
|
|
|
// or higher.
|
|
|
|
func CreateClientConfig(certFile, keyFile, caCertFile string, noverify, tls1011 bool) (*tls.Config, error) {
|
|
|
|
var err error
|
|
|
|
|
|
|
|
config := createBaseTLSConfig(noverify, tls1011)
|
|
|
|
config.Certificates = make([]tls.Certificate, 1)
|
|
|
|
config.Certificates[0], err = tls.LoadX509KeyPair(certFile, keyFile)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
if caCertFile != "" {
|
|
|
|
asn1Data, err := ioutil.ReadFile(caCertFile)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
config.RootCAs = x509.NewCertPool()
|
|
|
|
ok := config.RootCAs.AppendCertsFromPEM(asn1Data)
|
|
|
|
if !ok {
|
|
|
|
return nil, fmt.Errorf("failed to load CA certificate(s) for server verification in %q", caCertFile)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return config, nil
|
|
|
|
}
|
|
|
|
|
|
|
|
// CreateServerConfig creates a new tls.Config for use by a server. The certFile and keyFile
|
|
|
|
// parameters are the paths to the server's certificate and key files, which will be used to
|
|
|
|
// authenticate the server to the client. The caCertFile parameter is the path to the CA
|
|
|
|
// certificate file, which the server will use to verify any certificate presented by the
|
|
|
|
// client. If noverify is true, the server will not verify the client's certificate. If
|
|
|
|
// tls1011 is true, the server will accept TLS 1.0 or 1.1. Otherwise, it will require TLS 1.2
|
|
|
|
// or higher.
|
|
|
|
func CreateServerConfig(certFile, keyFile, caCertFile string, noverify, tls1011 bool) (*tls.Config, error) {
|
|
|
|
var err error
|
|
|
|
|
|
|
|
config := createBaseTLSConfig(noverify, tls1011)
|
|
|
|
config.Certificates = make([]tls.Certificate, 1)
|
|
|
|
config.Certificates[0], err = tls.LoadX509KeyPair(certFile, keyFile)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
if caCertFile != "" {
|
|
|
|
asn1Data, err := ioutil.ReadFile(caCertFile)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
config.ClientCAs = x509.NewCertPool()
|
|
|
|
ok := config.ClientCAs.AppendCertsFromPEM(asn1Data)
|
|
|
|
if !ok {
|
|
|
|
return nil, fmt.Errorf("failed to load CA certificate(s) for client verification in %q", caCertFile)
|
|
|
|
}
|
|
|
|
config.ClientAuth = tls.RequireAndVerifyClientCert
|
|
|
|
}
|
|
|
|
return config, nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func createBaseTLSConfig(noverify, tls1011 bool) *tls.Config {
|
|
|
|
var minTLS = uint16(tls.VersionTLS12)
|
|
|
|
if tls1011 {
|
|
|
|
minTLS = tls.VersionTLS10
|
|
|
|
}
|
|
|
|
|
|
|
|
return &tls.Config{
|
|
|
|
InsecureSkipVerify: noverify,
|
|
|
|
NextProtos: []string{"h2", "http/1.1"},
|
|
|
|
MinVersion: minTLS,
|
|
|
|
}
|
|
|
|
}
|