mirror of https://github.com/helm/helm
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
2.7 KiB
123 lines
2.7 KiB
/*
|
|
Copyright The Helm Authors.
|
|
|
|
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 tlsutil
|
|
|
|
import (
|
|
"crypto/tls"
|
|
"crypto/x509"
|
|
"fmt"
|
|
"os"
|
|
|
|
"errors"
|
|
)
|
|
|
|
type TLSConfigOptions struct {
|
|
insecureSkipTLSverify bool
|
|
certPEMBlock, keyPEMBlock []byte
|
|
caPEMBlock []byte
|
|
}
|
|
|
|
type TLSConfigOption func(options *TLSConfigOptions) error
|
|
|
|
func WithInsecureSkipVerify(insecureSkipTLSverify bool) TLSConfigOption {
|
|
return func(options *TLSConfigOptions) error {
|
|
options.insecureSkipTLSverify = insecureSkipTLSverify
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
func WithCertKeyPairFiles(certFile, keyFile string) TLSConfigOption {
|
|
return func(options *TLSConfigOptions) error {
|
|
if certFile == "" && keyFile == "" {
|
|
return nil
|
|
}
|
|
|
|
certPEMBlock, err := os.ReadFile(certFile)
|
|
if err != nil {
|
|
return fmt.Errorf("unable to read cert file: %q: %w", certFile, err)
|
|
}
|
|
|
|
keyPEMBlock, err := os.ReadFile(keyFile)
|
|
if err != nil {
|
|
return fmt.Errorf("unable to read key file: %q: %w", keyFile, err)
|
|
}
|
|
|
|
options.certPEMBlock = certPEMBlock
|
|
options.keyPEMBlock = keyPEMBlock
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
func WithCAFile(caFile string) TLSConfigOption {
|
|
return func(options *TLSConfigOptions) error {
|
|
if caFile == "" {
|
|
return nil
|
|
}
|
|
|
|
caPEMBlock, err := os.ReadFile(caFile)
|
|
if err != nil {
|
|
return fmt.Errorf("can't read CA file: %q: %w", caFile, err)
|
|
}
|
|
|
|
options.caPEMBlock = caPEMBlock
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
func NewTLSConfig(options ...TLSConfigOption) (*tls.Config, error) {
|
|
to := TLSConfigOptions{}
|
|
|
|
errs := []error{}
|
|
for _, option := range options {
|
|
err := option(&to)
|
|
if err != nil {
|
|
errs = append(errs, err)
|
|
}
|
|
}
|
|
|
|
if len(errs) > 0 {
|
|
return nil, errors.Join(errs...)
|
|
}
|
|
|
|
config := tls.Config{
|
|
InsecureSkipVerify: to.insecureSkipTLSverify,
|
|
}
|
|
|
|
if len(to.certPEMBlock) > 0 && len(to.keyPEMBlock) > 0 {
|
|
cert, err := tls.X509KeyPair(to.certPEMBlock, to.keyPEMBlock)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("unable to load cert from key pair: %w", err)
|
|
}
|
|
|
|
config.Certificates = []tls.Certificate{cert}
|
|
}
|
|
|
|
if len(to.caPEMBlock) > 0 {
|
|
cp := x509.NewCertPool()
|
|
if !cp.AppendCertsFromPEM(to.caPEMBlock) {
|
|
return nil, fmt.Errorf("failed to append certificates from pem block")
|
|
}
|
|
|
|
config.RootCAs = cp
|
|
}
|
|
|
|
return &config, nil
|
|
}
|