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crypto.go
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crypto.go
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/*
* Copyright contributors to the Hyperledger Fabric Operator project
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 config
import (
"fmt"
"strings"
"github.com/pkg/errors"
"github.com/IBM-Blockchain/fabric-operator/pkg/util"
)
//go:generate counterfeiter -o mocks/crypto.go -fake-name Crypto . Crypto
type Crypto interface {
GetCrypto() (*Response, error)
PingCA() error
Validate() error
}
// TODO: Next refactor should move this outside of config package into cryptogen package
// along with the Response struct, which is required to avoid cyclical dependencies
func GenerateCrypto(generator Crypto) (*Response, error) {
if err := generator.PingCA(); err != nil {
return nil, errors.Wrap(err, "ca is not reachable")
}
if err := generator.Validate(); err != nil {
return nil, errors.Wrap(err, "invalid crypto")
}
return generator.GetCrypto()
}
type Cryptos struct {
Enrollment Crypto
TLS Crypto
ClientAuth Crypto
}
func (c *Cryptos) GenerateCryptoResponse() (*CryptoResponse, error) {
response := &CryptoResponse{}
if c.Enrollment != nil {
resp, err := GenerateCrypto(c.Enrollment)
if err != nil {
return nil, err
}
response.Enrollment = resp
}
if c.TLS != nil {
resp, err := GenerateCrypto(c.TLS)
if err != nil {
return nil, err
}
response.TLS = resp
}
if c.ClientAuth != nil {
resp, err := GenerateCrypto(c.ClientAuth)
if err != nil {
return nil, err
}
response.ClientAuth = resp
}
return response, nil
}
type CryptoResponse struct {
Enrollment *Response
TLS *Response
ClientAuth *Response
}
func (c *CryptoResponse) VerifyCertOU(crType string) error {
if c.Enrollment != nil {
err := c.Enrollment.VerifyCertOU(crType)
if err != nil {
return errors.Wrapf(err, "invalid OU for %s identity", crType)
}
}
return nil
}
type Response struct {
CACerts [][]byte
IntermediateCerts [][]byte
AdminCerts [][]byte
SignCert []byte
Keystore []byte
}
func (r *Response) VerifyCertOU(crType string) error {
if r.SignCert == nil || len(r.SignCert) == 0 {
return nil
}
crType = strings.ToLower(crType)
err := verifyCertOU(r.SignCert, crType)
if err != nil {
return errors.Wrap(err, "invalid OU for signcert")
}
if r.AdminCerts == nil {
return nil
}
return nil
}
func verifyCertOU(pemBytes []byte, ou string) error {
cert, err := util.GetCertificateFromPEMBytes(pemBytes)
if err != nil {
return err
}
if cert.Subject.OrganizationalUnit == nil {
return errors.New("OU not defined")
}
if !util.FindStringInArray(ou, cert.Subject.OrganizationalUnit) {
return errors.New(fmt.Sprintf("cert does not have right OU, expecting '%s'", ou))
}
return nil
}