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// Copyright The Notary Project 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 main
import (
"crypto"
"crypto/tls"
"crypto/x509"
"encoding/json"
"fmt"
"github.com/notaryproject/notation-core-go/signature"
"github.com/notaryproject/notation-go/config"
"github.com/notaryproject/notation-go/dir"
"github.com/notaryproject/notation-go/plugin/proto"
"github.com/notaryproject/notation/test/e2e/plugin/internal/io"
"github.com/spf13/cobra"
)
func describeKeyCommand() *cobra.Command {
return &cobra.Command{
Use: "describe-key",
RunE: func(cmd *cobra.Command, args []string) error {
req := &proto.DescribeKeyRequest{}
if err := io.UnmarshalRequest(req); err != nil {
return &proto.RequestError{Code: proto.ErrorCodeValidation, Err: err}
}
if err := validateDescribeKeyRequest(*req); err != nil {
return &proto.RequestError{Code: proto.ErrorCodeValidation, Err: err}
}
return runDescribeKey(req)
},
}
}
func runDescribeKey(req *proto.DescribeKeyRequest) error {
// load cert chain by keyID
_, certs, err := loadCertChain(req.KeyID)
if err != nil {
return &proto.RequestError{Code: ErrorCodeInvalidCertificate, Err: err}
}
// prepare response
ks, err := signature.ExtractKeySpec(certs[0])
if err != nil {
return &proto.RequestError{Code: ErrorCodeInvalidCertificate, Err: err}
}
keySpec, err := proto.EncodeKeySpec(ks)
if err != nil {
return &proto.RequestError{Code: proto.ErrorCodeGeneric, Err: err}
}
return io.PrintResponse(&proto.DescribeKeyResponse{
KeyID: req.KeyID,
KeySpec: keySpec,
})
}
func loadCertChain(keyID string) (crypto.PrivateKey, []*x509.Certificate, error) {
keyPath, certPath, err := getKeyPairPath(keyID)
if err != nil {
return nil, nil, err
}
certs, err := tls.LoadX509KeyPair(certPath, keyPath)
if err != nil {
return nil, nil, err
}
if len(certs.Certificate) == 0 {
return nil, nil, fmt.Errorf("%q does not contain certificate", certPath)
}
var certChain []*x509.Certificate
for _, cert := range certs.Certificate {
c, err := x509.ParseCertificate(cert)
if err != nil {
return nil, nil, err
}
certChain = append(certChain, c)
}
return certs.PrivateKey, certChain, nil
}
func getKeyPairPath(keyId string) (string, string, error) {
cfg := &config.SigningKeys{}
file, err := dir.ConfigFS().Open("pluginkeys.json")
if err != nil {
return "", "", err
}
defer file.Close()
if err := json.NewDecoder(file).Decode(cfg); err != nil {
return "", "", err
}
var keyPath, certPath string
for _, key := range cfg.Keys {
if key.ID == keyId {
keyPath = key.KeyPath
certPath = key.CertificatePath
break
}
}
if keyPath == "" || certPath == "" {
return "", "", fmt.Errorf("keyPath or certPath did't find for keyId: %s", keyId)
}
return keyPath, certPath, nil
}
func validateDescribeKeyRequest(req proto.DescribeKeyRequest) error {
return validateRequiredField(req, fieldSet("ContractVesion", "KeyId"))
}
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