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//
// Copyright (c) SAS Institute 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 certloader
import (
"bytes"
"crypto/x509"
"fmt"
"io"
"io/ioutil"
"golang.org/x/crypto/openpgp"
"golang.org/x/crypto/openpgp/armor"
)
type AnyCerts struct {
X509Certs []*x509.Certificate
PGPCerts openpgp.EntityList
}
// Load X509 and/or PGP certificates from the named file paths
func LoadAnyCerts(paths []string) (any AnyCerts, err error) {
for _, path := range paths {
blob, err := ioutil.ReadFile(path)
if err != nil {
return any, err
}
x509certs, err := parseCertificates(blob)
if err == nil {
any.X509Certs = append(any.X509Certs, x509certs.Certificates...)
continue
} else if err != ErrNoCerts {
return any, fmt.Errorf("%s: %w", path, err)
}
pgpcerts, err := parsePGP(blob)
if err == nil {
any.PGPCerts = append(any.PGPCerts, pgpcerts...)
} else {
return any, fmt.Errorf("%s: %w", path, err)
}
}
return any, nil
}
// Parse one or more PGP certificates from the given possibly-armored blob
func parsePGP(blob []byte) (openpgp.EntityList, error) {
reader := io.Reader(bytes.NewReader(blob))
if blob[0] == '-' {
block, err := armor.Decode(reader)
if err != nil {
return nil, err
}
reader = block.Body
}
return openpgp.ReadKeyRing(reader)
}
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