1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
// Copyright (c) 2022, Sylabs Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.
package cli
import (
"bytes"
"crypto/x509"
"encoding/pem"
"errors"
"os"
)
var errFailedToDecodePEM = errors.New("failed to decode PEM")
// loadCertificate returns the certificate read from path.
func loadCertificate(path string) (*x509.Certificate, error) {
b, err := os.ReadFile(path)
if err != nil {
return nil, err
}
p, _ := pem.Decode(b)
if p == nil {
return nil, errFailedToDecodePEM
}
return x509.ParseCertificate(p.Bytes)
}
// loadCertificatePool returns the pool of certificates read from path.
func loadCertificatePool(path string) (*x509.CertPool, error) {
b, err := os.ReadFile(path)
if err != nil {
return nil, err
}
pool := x509.NewCertPool()
for rest := bytes.TrimSpace(b); len(rest) > 0; {
var p *pem.Block
if p, rest = pem.Decode(rest); p == nil {
return nil, errFailedToDecodePEM
}
c, err := x509.ParseCertificate(p.Bytes)
if err != nil {
return nil, err
}
pool.AddCert(c)
}
return pool, nil
}
|
