-
-
Notifications
You must be signed in to change notification settings - Fork 738
/
client.go
195 lines (162 loc) · 5.31 KB
/
client.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
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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
/*
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 vault
import (
"context"
"crypto/tls"
"crypto/x509"
"errors"
"fmt"
"net/http"
"github.com/go-logr/logr"
vault "github.com/hashicorp/vault/api"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
typedcorev1 "k8s.io/client-go/kubernetes/typed/core/v1"
kclient "sigs.k8s.io/controller-runtime/pkg/client"
esv1beta1 "github.com/external-secrets/external-secrets/apis/externalsecrets/v1beta1"
esmeta "github.com/external-secrets/external-secrets/apis/meta/v1"
"github.com/external-secrets/external-secrets/pkg/provider/vault/util"
"github.com/external-secrets/external-secrets/pkg/utils/resolvers"
)
var _ esv1beta1.SecretsClient = &client{}
type client struct {
kube kclient.Client
store *esv1beta1.VaultProvider
log logr.Logger
corev1 typedcorev1.CoreV1Interface
client util.Client
auth util.Auth
logical util.Logical
token util.Token
namespace string
storeKind string
}
func (c *client) newConfig(ctx context.Context) (*vault.Config, error) {
cfg := vault.DefaultConfig()
cfg.Address = c.store.Server
if len(c.store.CABundle) != 0 || c.store.CAProvider != nil {
caCertPool := x509.NewCertPool()
if len(c.store.CABundle) > 0 {
ok := caCertPool.AppendCertsFromPEM(c.store.CABundle)
if !ok {
return nil, fmt.Errorf(errVaultCert, errors.New("failed to parse certificates from CertPool"))
}
}
if c.store.CAProvider != nil && c.storeKind == esv1beta1.ClusterSecretStoreKind && c.store.CAProvider.Namespace == nil {
return nil, errors.New(errCANamespace)
}
if c.store.CAProvider != nil {
var cert []byte
var err error
switch c.store.CAProvider.Type {
case esv1beta1.CAProviderTypeSecret:
cert, err = getCertFromSecret(c)
case esv1beta1.CAProviderTypeConfigMap:
cert, err = getCertFromConfigMap(c)
default:
return nil, errors.New(errUnknownCAProvider)
}
if err != nil {
return nil, err
}
ok := caCertPool.AppendCertsFromPEM(cert)
if !ok {
return nil, fmt.Errorf(errVaultCert, errors.New("failed to parse certificates from CertPool"))
}
}
if transport, ok := cfg.HttpClient.Transport.(*http.Transport); ok {
transport.TLSClientConfig.RootCAs = caCertPool
}
}
err := c.configureClientTLS(ctx, cfg)
if err != nil {
return nil, err
}
// If either read-after-write consistency feature is enabled, enable ReadYourWrites
cfg.ReadYourWrites = c.store.ReadYourWrites || c.store.ForwardInconsistent
return cfg, nil
}
func (c *client) configureClientTLS(ctx context.Context, cfg *vault.Config) error {
clientTLS := c.store.ClientTLS
if clientTLS.CertSecretRef != nil && clientTLS.KeySecretRef != nil {
if clientTLS.KeySecretRef.Key == "" {
clientTLS.KeySecretRef.Key = corev1.TLSPrivateKeyKey
}
clientKey, err := resolvers.SecretKeyRef(ctx, c.kube, c.storeKind, c.namespace, clientTLS.KeySecretRef)
if err != nil {
return err
}
if clientTLS.CertSecretRef.Key == "" {
clientTLS.CertSecretRef.Key = corev1.TLSCertKey
}
clientCert, err := resolvers.SecretKeyRef(ctx, c.kube, c.storeKind, c.namespace, clientTLS.CertSecretRef)
if err != nil {
return err
}
cert, err := tls.X509KeyPair([]byte(clientCert), []byte(clientKey))
if err != nil {
return fmt.Errorf(errClientTLSAuth, err)
}
if transport, ok := cfg.HttpClient.Transport.(*http.Transport); ok {
transport.TLSClientConfig.Certificates = []tls.Certificate{cert}
}
}
return nil
}
func getCertFromSecret(v *client) ([]byte, error) {
secretRef := esmeta.SecretKeySelector{
Name: v.store.CAProvider.Name,
Namespace: &v.namespace,
Key: v.store.CAProvider.Key,
}
if v.store.CAProvider.Namespace != nil {
secretRef.Namespace = v.store.CAProvider.Namespace
}
ctx := context.Background()
res, err := resolvers.SecretKeyRef(ctx, v.kube, v.storeKind, v.namespace, &secretRef)
if err != nil {
return nil, fmt.Errorf(errVaultCert, err)
}
return []byte(res), nil
}
func getCertFromConfigMap(v *client) ([]byte, error) {
objKey := types.NamespacedName{
Name: v.store.CAProvider.Name,
Namespace: v.namespace,
}
if v.store.CAProvider.Namespace != nil {
objKey.Namespace = *v.store.CAProvider.Namespace
}
configMapRef := &corev1.ConfigMap{}
ctx := context.Background()
err := v.kube.Get(ctx, objKey, configMapRef)
if err != nil {
return nil, fmt.Errorf(errVaultCert, err)
}
val, ok := configMapRef.Data[v.store.CAProvider.Key]
if !ok {
return nil, fmt.Errorf(errConfigMapFmt, v.store.CAProvider.Key)
}
return []byte(val), nil
}
func (c *client) Close(ctx context.Context) error {
// Revoke the token if we have one set, it wasn't sourced from a TokenSecretRef,
// and token caching isn't enabled
if !enableCache && c.client.Token() != "" && c.store.Auth.TokenSecretRef == nil {
err := revokeTokenIfValid(ctx, c.client)
if err != nil {
return err
}
}
return nil
}