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package main
import (
"crypto/tls"
"crypto/x509"
"io/ioutil"
"log"
)
func createTLSConfig(pemFile, pemCertFile, pemPrivateKeyFile string, insecureSkipVerify bool) *tls.Config {
tlsConfig := tls.Config{}
if insecureSkipVerify {
// pem settings are irrelevant if we're skipping verification anyway
tlsConfig.InsecureSkipVerify = true
}
if len(pemFile) > 0 {
rootCerts, err := loadCertificatesFrom(pemFile)
if err != nil {
log.Fatalf("Couldn't load root certificate from %s. Got %s.", pemFile, err)
return nil
}
tlsConfig.RootCAs = rootCerts
}
if len(pemCertFile) > 0 && len(pemPrivateKeyFile) > 0 {
clientPrivateKey, err := loadPrivateKeyFrom(pemCertFile, pemPrivateKeyFile)
if err != nil {
log.Fatalf("Couldn't setup client authentication. Got %s.", err)
return nil
}
tlsConfig.Certificates = []tls.Certificate{*clientPrivateKey}
}
return &tlsConfig
}
func loadCertificatesFrom(pemFile string) (*x509.CertPool, error) {
caCert, err := ioutil.ReadFile(pemFile)
if err != nil {
return nil, err
}
certificates := x509.NewCertPool()
certificates.AppendCertsFromPEM(caCert)
return certificates, nil
}
func loadPrivateKeyFrom(pemCertFile, pemPrivateKeyFile string) (*tls.Certificate, error) {
privateKey, err := tls.LoadX509KeyPair(pemCertFile, pemPrivateKeyFile)
if err != nil {
return nil, err
}
return &privateKey, nil
}
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