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/
preshared.go
105 lines (86 loc) · 2.4 KB
/
preshared.go
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// Copyright 2016 CoreOS, Inc
//
// 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 preshared
import (
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"errors"
"fmt"
"io/ioutil"
"github.com/coreos/go-oidc/key"
"gopkg.in/yaml.v2"
"github.com/eclipse/che-jwtproxy/config"
"github.com/eclipse/che-jwtproxy/jwt/privatekey"
"github.com/eclipse/che-jwtproxy/stop"
)
func init() {
privatekey.Register("preshared", constructor)
}
type Preshared struct {
*key.PrivateKey
}
type Config struct {
KeyID string `yaml:"key_id"`
PrivateKeyPath string `yaml:"private_key_path"`
}
func constructor(registrableComponentConfig config.RegistrableComponentConfig, _ config.SignerParams) (privatekey.PrivateKey, error) {
var cfg Config
bytes, err := yaml.Marshal(registrableComponentConfig.Options)
if err != nil {
return nil, err
}
err = yaml.Unmarshal(bytes, &cfg)
if err != nil {
return nil, err
}
privateKey, err := loadPrivateKey(cfg.PrivateKeyPath)
if err != nil {
return nil, err
}
return &Preshared{
PrivateKey: &key.PrivateKey{
KeyID: cfg.KeyID,
PrivateKey: privateKey,
},
}, nil
}
func (preshared *Preshared) GetPrivateKey() (*key.PrivateKey, error) {
return preshared.PrivateKey, nil
}
func (preshared *Preshared) Stop() <-chan struct{} {
return stop.AlreadyDone
}
func loadPrivateKey(path string) (*rsa.PrivateKey, error) {
privateKeyData, err := ioutil.ReadFile(path)
if err != nil {
return nil, err
}
privateKeyBlock, _ := pem.Decode(privateKeyData)
if privateKeyBlock == nil {
return nil, errors.New("bad private key data")
}
if privateKeyBlock.Type != "RSA PRIVATE KEY" {
return nil, fmt.Errorf("unknown key type : %s", privateKeyBlock.Type)
}
privateKey, err := x509.ParsePKCS1PrivateKey(privateKeyBlock.Bytes)
if err != nil {
return nil, err
}
if err := privateKey.Validate(); err != nil {
return nil, err
}
privateKey.Precompute()
return privateKey, err
}