forked from TrueCloudLab/distribution
54 lines
1.8 KiB
Go
54 lines
1.8 KiB
Go
// Copyright 2022 Google LLC.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// Package cert contains certificate tools for Google API clients.
|
|
// This package is intended to be used with crypto/tls.Config.GetClientCertificate.
|
|
//
|
|
// The certificates can be used to satisfy Google's Endpoint Validation.
|
|
// See https://cloud.google.com/endpoint-verification/docs/overview
|
|
//
|
|
// This package is not intended for use by end developers. Use the
|
|
// google.golang.org/api/option package to configure API clients.
|
|
package cert
|
|
|
|
import (
|
|
"crypto/tls"
|
|
"errors"
|
|
|
|
"github.com/googleapis/enterprise-certificate-proxy/client"
|
|
)
|
|
|
|
type ecpSource struct {
|
|
key *client.Key
|
|
}
|
|
|
|
// NewEnterpriseCertificateProxySource creates a certificate source
|
|
// using the Enterprise Certificate Proxy client, which delegates
|
|
// certifcate related operations to an OS-specific "signer binary"
|
|
// that communicates with the native keystore (ex. keychain on MacOS).
|
|
//
|
|
// The configFilePath points to a config file containing relevant parameters
|
|
// such as the certificate issuer and the location of the signer binary.
|
|
// If configFilePath is empty, the client will attempt to load the config from
|
|
// a well-known gcloud location.
|
|
func NewEnterpriseCertificateProxySource(configFilePath string) (Source, error) {
|
|
key, err := client.Cred(configFilePath)
|
|
if err != nil {
|
|
if errors.Is(err, client.ErrCredUnavailable) {
|
|
return nil, errSourceUnavailable
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
return (&ecpSource{
|
|
key: key,
|
|
}).getClientCertificate, nil
|
|
}
|
|
|
|
func (s *ecpSource) getClientCertificate(info *tls.CertificateRequestInfo) (*tls.Certificate, error) {
|
|
var cert tls.Certificate
|
|
cert.PrivateKey = s.key
|
|
cert.Certificate = s.key.CertificateChain()
|
|
return &cert, nil
|
|
}
|