112 lines
3.1 KiB
Go
112 lines
3.1 KiB
Go
/*
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Copyright 2020 Google LLC
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package util
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import (
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"crypto/tls"
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"crypto/x509"
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"fmt"
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"os"
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"strings"
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"net/http"
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"github.com/GoogleContainerTools/kaniko/pkg/config"
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"github.com/sirupsen/logrus"
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)
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type CertPool interface {
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value() *x509.CertPool
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append(path string) error
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}
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type X509CertPool struct {
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inner x509.CertPool
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}
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func (p *X509CertPool) value() *x509.CertPool {
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return &p.inner
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}
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func (p *X509CertPool) append(path string) error {
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pem, err := os.ReadFile(path)
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if err != nil {
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return err
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}
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p.inner.AppendCertsFromPEM(pem)
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return nil
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}
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var systemCertLoader CertPool
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type KeyPairLoader interface {
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load(string, string) (tls.Certificate, error)
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}
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type X509KeyPairLoader struct {
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}
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func (p *X509KeyPairLoader) load(certFile, keyFile string) (tls.Certificate, error) {
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return tls.LoadX509KeyPair(certFile, keyFile)
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}
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var systemKeyPairLoader KeyPairLoader
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func init() {
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systemCertPool, err := x509.SystemCertPool()
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if err != nil {
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logrus.Warn("Failed to load system cert pool. Loading empty one instead.")
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systemCertPool = x509.NewCertPool()
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}
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systemCertLoader = &X509CertPool{
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inner: *systemCertPool,
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}
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systemKeyPairLoader = &X509KeyPairLoader{}
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}
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func MakeTransport(opts config.RegistryOptions, registryName string) (http.RoundTripper, error) {
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// Create a transport to set our user-agent.
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var tr http.RoundTripper = http.DefaultTransport.(*http.Transport).Clone()
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if opts.SkipTLSVerify || opts.SkipTLSVerifyRegistries.Contains(registryName) {
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tr.(*http.Transport).TLSClientConfig = &tls.Config{
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InsecureSkipVerify: true,
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}
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} else if certificatePath := opts.RegistriesCertificates[registryName]; certificatePath != "" {
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if err := systemCertLoader.append(certificatePath); err != nil {
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return nil, fmt.Errorf("failed to load certificate %s for %s: %w", certificatePath, registryName, err)
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}
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tr.(*http.Transport).TLSClientConfig = &tls.Config{
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RootCAs: systemCertLoader.value(),
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}
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}
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if clientCertificatePath := opts.RegistriesClientCertificates[registryName]; clientCertificatePath != "" {
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certFiles := strings.Split(clientCertificatePath, ",")
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if len(certFiles) != 2 {
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return nil, fmt.Errorf("failed to load client certificate/key '%s=%s', expected format: %s=/path/to/cert,/path/to/key", registryName, clientCertificatePath, registryName)
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}
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cert, err := systemKeyPairLoader.load(certFiles[0], certFiles[1])
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if err != nil {
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return nil, fmt.Errorf("failed to load client certificate/key '%s' for %s: %w", clientCertificatePath, registryName, err)
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}
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tr.(*http.Transport).TLSClientConfig.Certificates = []tls.Certificate{cert}
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}
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return tr, nil
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}
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