| // Copyright Istio 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 util |
| |
| import ( |
| "crypto/x509" |
| "encoding/pem" |
| "errors" |
| "fmt" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pilot/pkg/keycertbundle" |
| ) |
| |
| type ConfigError struct { |
| err error |
| reason string |
| } |
| |
| func (e ConfigError) Error() string { |
| return e.err.Error() |
| } |
| |
| func (e ConfigError) Reason() string { |
| return e.reason |
| } |
| |
| func LoadCABundle(caBundleWatcher *keycertbundle.Watcher) ([]byte, error) { |
| caBundle := caBundleWatcher.GetCABundle() |
| if err := VerifyCABundle(caBundle); err != nil { |
| return nil, &ConfigError{err, "could not verify caBundle"} |
| } |
| |
| return caBundle, nil |
| } |
| |
| func VerifyCABundle(caBundle []byte) error { |
| block, _ := pem.Decode(caBundle) |
| if block == nil { |
| return errors.New("could not decode pem") |
| } |
| if block.Type != "CERTIFICATE" { |
| return fmt.Errorf("cert contains wrong pem type: %q", block.Type) |
| } |
| if _, err := x509.ParseCertificate(block.Bytes); err != nil { |
| return fmt.Errorf("cert contains invalid x509 certificate: %v", err) |
| } |
| return nil |
| } |