This repository has been archived by the owner on Jun 7, 2023. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 26
/
tls_dialer_factory.go
83 lines (68 loc) · 2.22 KB
/
tls_dialer_factory.go
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
/*
Copyright 2021 The Knative 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 reconciler
import (
"crypto/tls"
"crypto/x509"
"fmt"
"net"
v1 "k8s.io/client-go/listers/core/v1"
"knative.dev/control-protocol/pkg/certificates"
)
type TLSDialerFactory interface {
GenerateTLSDialer(baseDialOptions *net.Dialer) (*tls.Dialer, error)
}
type ListerCertificateGetter struct {
secrets v1.SecretLister
name string
namespace string
}
func NewCertificateGetter(secrets v1.SecretLister, namespace string, name string) *ListerCertificateGetter {
return &ListerCertificateGetter{
secrets: secrets,
name: name,
namespace: namespace,
}
}
func (ch *ListerCertificateGetter) GenerateTLSDialer(baseDialOptions *net.Dialer) (*tls.Dialer, error) {
secret, err := ch.secrets.Secrets(ch.namespace).Get(ch.name)
if err != nil {
return nil, err
}
if secret == nil || secret.Data == nil {
return nil, fmt.Errorf("no tls configuration available")
}
caCertBytes := secret.Data[certificates.SecretCaCertKey]
certBytes := secret.Data[certificates.SecretCertKey]
privateKeyBytes := secret.Data[certificates.SecretPKKey]
if caCertBytes == nil || certBytes == nil || privateKeyBytes == nil {
return nil, fmt.Errorf("no tls configuration available")
}
controlPlaneCert, err := tls.X509KeyPair(certBytes, privateKeyBytes)
if err != nil {
return nil, err
}
certPool := x509.NewCertPool()
certPool.AppendCertsFromPEM(caCertBytes)
tlsConfig := &tls.Config{
Certificates: []tls.Certificate{controlPlaneCert},
RootCAs: certPool,
ServerName: certificates.DataPlaneUserName(ch.namespace),
}
// Copy from base dial options
dialOptions := *baseDialOptions
return &tls.Dialer{
NetDialer: &dialOptions,
Config: tlsConfig,
}, nil
}