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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
// 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 caddytls
import (
"crypto/tls"
"fmt"
"strings"
"github.com/caddyserver/certmagic"
"github.com/caddyserver/caddy/v2"
)
func init() {
caddy.RegisterModule(StorageLoader{})
}
// StorageLoader loads certificates and their associated keys
// from the globally configured storage module.
type StorageLoader struct {
// A list of pairs of certificate and key file names along with their
// encoding format so that they can be loaded from storage.
Pairs []CertKeyFilePair `json:"pairs,omitempty"`
// Reference to the globally configured storage module.
storage certmagic.Storage
ctx caddy.Context
}
// CaddyModule returns the Caddy module information.
func (StorageLoader) CaddyModule() caddy.ModuleInfo {
return caddy.ModuleInfo{
ID: "tls.certificates.load_storage",
New: func() caddy.Module { return new(StorageLoader) },
}
}
// Provision loads the storage module for sl.
func (sl *StorageLoader) Provision(ctx caddy.Context) error {
sl.storage = ctx.Storage()
sl.ctx = ctx
repl, ok := ctx.Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
if !ok {
repl = caddy.NewReplacer()
}
for k, pair := range sl.Pairs {
for i, tag := range pair.Tags {
pair.Tags[i] = repl.ReplaceKnown(tag, "")
}
sl.Pairs[k] = CertKeyFilePair{
Certificate: repl.ReplaceKnown(pair.Certificate, ""),
Key: repl.ReplaceKnown(pair.Key, ""),
Format: repl.ReplaceKnown(pair.Format, ""),
Tags: pair.Tags,
}
}
return nil
}
// LoadCertificates returns the certificates to be loaded by sl.
func (sl StorageLoader) LoadCertificates() ([]Certificate, error) {
certs := make([]Certificate, 0, len(sl.Pairs))
for _, pair := range sl.Pairs {
certData, err := sl.storage.Load(sl.ctx, pair.Certificate)
if err != nil {
return nil, err
}
keyData, err := sl.storage.Load(sl.ctx, pair.Key)
if err != nil {
return nil, err
}
var cert tls.Certificate
switch pair.Format {
case "":
fallthrough
case "pem":
// if the start of the key file looks like an encrypted private key,
// reject it with a helpful error message
if strings.Contains(string(keyData[:40]), "ENCRYPTED") {
return nil, fmt.Errorf("encrypted private keys are not supported; please decrypt the key first")
}
cert, err = tls.X509KeyPair(certData, keyData)
default:
return nil, fmt.Errorf("unrecognized certificate/key encoding format: %s", pair.Format)
}
if err != nil {
return nil, err
}
certs = append(certs, Certificate{Certificate: cert, Tags: pair.Tags})
}
return certs, nil
}
// Interface guard
var (
_ CertificateLoader = (*StorageLoader)(nil)
_ caddy.Provisioner = (*StorageLoader)(nil)
)
|
