mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-14 02:10:21 +00:00
114 lines
3.5 KiB
Go
114 lines
3.5 KiB
Go
/*
|
|
Copyright 2014 The Kubernetes 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 cert
|
|
|
|
import (
|
|
"crypto/x509"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
)
|
|
|
|
// CanReadCertAndKey returns true if the certificate and key files already exists,
|
|
// otherwise returns false. If lost one of cert and key, returns error.
|
|
func CanReadCertAndKey(certPath, keyPath string) (bool, error) {
|
|
certReadable := canReadFile(certPath)
|
|
keyReadable := canReadFile(keyPath)
|
|
|
|
if certReadable == false && keyReadable == false {
|
|
return false, nil
|
|
}
|
|
|
|
if certReadable == false {
|
|
return false, fmt.Errorf("error reading %s, certificate and key must be supplied as a pair", certPath)
|
|
}
|
|
|
|
if keyReadable == false {
|
|
return false, fmt.Errorf("error reading %s, certificate and key must be supplied as a pair", keyPath)
|
|
}
|
|
|
|
return true, nil
|
|
}
|
|
|
|
// If the file represented by path exists and
|
|
// readable, returns true otherwise returns false.
|
|
func canReadFile(path string) bool {
|
|
f, err := os.Open(path)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
|
|
defer f.Close()
|
|
|
|
return true
|
|
}
|
|
|
|
// WriteCert writes the pem-encoded certificate data to certPath.
|
|
// The certificate file will be created with file mode 0644.
|
|
// If the certificate file already exists, it will be overwritten.
|
|
// The parent directory of the certPath will be created as needed with file mode 0755.
|
|
func WriteCert(certPath string, data []byte) error {
|
|
if err := os.MkdirAll(filepath.Dir(certPath), os.FileMode(0755)); err != nil {
|
|
return err
|
|
}
|
|
return ioutil.WriteFile(certPath, data, os.FileMode(0644))
|
|
}
|
|
|
|
// NewPool returns an x509.CertPool containing the certificates in the given PEM-encoded file.
|
|
// Returns an error if the file could not be read, a certificate could not be parsed, or if the file does not contain any certificates
|
|
func NewPool(filename string) (*x509.CertPool, error) {
|
|
pemBlock, err := ioutil.ReadFile(filename)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
pool, err := NewPoolFromBytes(pemBlock)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error creating pool from %s: %s", filename, err)
|
|
}
|
|
return pool, nil
|
|
}
|
|
|
|
// NewPoolFromBytes returns an x509.CertPool containing the certificates in the given PEM-encoded bytes.
|
|
// Returns an error if the file could not be read, a certificate could not be parsed, or if the file does not contain any certificates
|
|
func NewPoolFromBytes(pemBlock []byte) (*x509.CertPool, error) {
|
|
certs, err := ParseCertsPEM(pemBlock)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
pool := x509.NewCertPool()
|
|
for _, cert := range certs {
|
|
pool.AddCert(cert)
|
|
}
|
|
return pool, nil
|
|
}
|
|
|
|
// CertsFromFile returns the x509.Certificates contained in the given PEM-encoded file.
|
|
// Returns an error if the file could not be read, a certificate could not be parsed, or if the file does not contain any certificates
|
|
func CertsFromFile(file string) ([]*x509.Certificate, error) {
|
|
pemBlock, err := ioutil.ReadFile(file)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
certs, err := ParseCertsPEM(pemBlock)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error reading %s: %s", file, err)
|
|
}
|
|
return certs, nil
|
|
}
|