mirror of https://github.com/caddyserver/caddy.git
104 lines
2.8 KiB
Go
104 lines
2.8 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy 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 caddypki
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto"
|
|
"crypto/x509"
|
|
"encoding/pem"
|
|
"fmt"
|
|
"os"
|
|
|
|
"github.com/caddyserver/certmagic"
|
|
)
|
|
|
|
func pemDecodeSingleCert(pemDER []byte) (*x509.Certificate, error) {
|
|
pemBlock, remaining := pem.Decode(pemDER)
|
|
if pemBlock == nil {
|
|
return nil, fmt.Errorf("no PEM block found")
|
|
}
|
|
if len(remaining) > 0 {
|
|
return nil, fmt.Errorf("input contained more than a single PEM block")
|
|
}
|
|
if pemBlock.Type != "CERTIFICATE" {
|
|
return nil, fmt.Errorf("expected PEM block type to be CERTIFICATE, but got '%s'", pemBlock.Type)
|
|
}
|
|
return x509.ParseCertificate(pemBlock.Bytes)
|
|
}
|
|
|
|
func pemEncodeCert(der []byte) ([]byte, error) {
|
|
return pemEncode("CERTIFICATE", der)
|
|
}
|
|
|
|
func pemEncode(blockType string, b []byte) ([]byte, error) {
|
|
var buf bytes.Buffer
|
|
err := pem.Encode(&buf, &pem.Block{Type: blockType, Bytes: b})
|
|
return buf.Bytes(), err
|
|
}
|
|
|
|
func trusted(cert *x509.Certificate) bool {
|
|
chains, err := cert.Verify(x509.VerifyOptions{})
|
|
return len(chains) > 0 && err == nil
|
|
}
|
|
|
|
// KeyPair represents a public-private key pair, where the
|
|
// public key is also called a certificate.
|
|
type KeyPair struct {
|
|
// The certificate. By default, this should be the path to
|
|
// a PEM file unless format is something else.
|
|
Certificate string `json:"certificate,omitempty"`
|
|
|
|
// The private key. By default, this should be the path to
|
|
// a PEM file unless format is something else.
|
|
PrivateKey string `json:"private_key,omitempty"`
|
|
|
|
// The format in which the certificate and private
|
|
// key are provided. Default: pem_file
|
|
Format string `json:"format,omitempty"`
|
|
}
|
|
|
|
// Load loads the certificate and key.
|
|
func (kp KeyPair) Load() (*x509.Certificate, crypto.Signer, error) {
|
|
switch kp.Format {
|
|
case "", "pem_file":
|
|
certData, err := os.ReadFile(kp.Certificate)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
cert, err := pemDecodeSingleCert(certData)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
var key crypto.Signer
|
|
if kp.PrivateKey != "" {
|
|
keyData, err := os.ReadFile(kp.PrivateKey)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
key, err = certmagic.PEMDecodePrivateKey(keyData)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
}
|
|
|
|
return cert, key, nil
|
|
|
|
default:
|
|
return nil, nil, fmt.Errorf("unsupported format: %s", kp.Format)
|
|
}
|
|
}
|