/
storage.go
340 lines (308 loc) · 7.93 KB
/
storage.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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
// Copyright 2019 HAProxy Technologies
//
// 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 storage
import (
"crypto"
"crypto/ecdsa"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"fmt"
"io"
"io/fs"
"os"
"path/filepath"
"strings"
"github.com/google/renameio"
conf "github.com/haproxytech/client-native/v6/configuration"
"github.com/haproxytech/client-native/v6/misc"
)
type FileType string
const (
GeneralType FileType = "general"
MapsType FileType = "maps"
SSLType FileType = "certs"
SpoeType FileType = "spoe"
SpoeTransactionsType FileType = "spoe-transactions"
BackupsType FileType = "backups"
TransactionsType FileType = "transactions"
)
type Storage interface {
GetAll() ([]string, error)
Get(name string) (string, int64, error)
GetContents(name string) (string, error)
GetRawContents(name string) (io.ReadCloser, error)
GetCertificatesInfo(name string) (*CertificatesInfo, error)
Delete(name string) error
Replace(name string, config string) (string, error)
Create(name string, contents io.ReadCloser) (string, int64, error)
}
type storage struct {
dirname string
fileType FileType
}
func New(dirname string, fileType FileType) (Storage, error) {
dirname, err := misc.CheckOrCreateWritableDirectory(dirname)
if err != nil {
return nil, err
}
switch fileType { //nolint:exhaustive
case MapsType, SSLType, GeneralType, BackupsType:
return &storage{
dirname: dirname,
fileType: fileType,
}, nil
default:
return nil, fmt.Errorf("fileType is not valid %s", fileType)
}
}
func (s *storage) GetAll() ([]string, error) {
fis, err := readDir(s.dirname)
if err != nil {
return nil, err
}
files := []string{}
for _, fi := range fis {
file := filepath.Join(s.dirname, fi.Name())
switch s.fileType { //nolint:exhaustive
case SSLType:
noErrors := true
raw, err := readFile(file)
if err != nil {
noErrors = noErrors && false
}
err = s.validatePEM([]byte(raw))
if err != nil {
noErrors = noErrors && false
}
if noErrors {
files = append(files, file)
}
case MapsType, GeneralType:
files = append(files, file)
}
}
return files, nil
}
// Get returns the full path of a file and checks if it exists.
func (s *storage) Get(name string) (string, int64, error) {
f, size, err := getFile(s.dirname, name)
if err != nil {
return "", -1, err
}
if f == "" {
return "", -1, conf.NewConfError(conf.ErrObjectDoesNotExist, fmt.Sprintf("file %s doesn't exist in dir: %s", name, s.dirname))
}
return f, size, nil
}
func (s *storage) GetContents(name string) (string, error) {
f, _, err := getFile(s.dirname, name)
if err != nil {
return "", err
}
return readFile(f)
}
func (s *storage) GetRawContents(name string) (io.ReadCloser, error) {
fname, _, err := getFile(s.dirname, name)
if err != nil {
return nil, err
}
return os.Open(fname)
}
func (s *storage) GetCertificatesInfo(name string) (*CertificatesInfo, error) {
f := name
var err error
if !strings.HasPrefix(name, s.dirname) {
f, _, err = s.Get(name)
if err != nil {
return nil, err
}
}
raw, err := os.ReadFile(f)
if err != nil {
return nil, err
}
return ParseCertificatesInfo(raw)
}
func (s *storage) Delete(name string) error {
f, _, err := s.Get(name)
if err != nil {
return err
}
return s.remove(f)
}
func (s storage) Replace(name string, config string) (string, error) {
f, _, err := getFile(s.dirname, name)
if err != nil {
return "", err
}
switch s.fileType { //nolint:exhaustive
case SSLType:
err = s.validatePEM([]byte(config))
if err != nil {
return "", err
}
case MapsType:
}
err = renameio.WriteFile(f, []byte(config), 0o644)
if err != nil {
return "", err
}
return f, nil
}
func (s *storage) Create(name string, readCloser io.ReadCloser) (string, int64, error) {
name = misc.SanitizeFilename(name)
if s.fileType == MapsType {
if !strings.HasSuffix(name, ".map") {
name = fmt.Sprintf("%s.map", name)
}
}
f := filepath.Join(s.dirname, name)
if _, err := os.Stat(f); err == nil {
return "", -1, conf.NewConfError(conf.ErrObjectAlreadyExists, fmt.Sprintf("file %s already exists", f))
}
switch s.fileType { //nolint:exhaustive
case SSLType:
return s.createSSL(f, readCloser)
case MapsType, GeneralType:
return s.createFile(f, readCloser)
}
return f, -1, nil
}
func (s *storage) createSSL(name string, readCloser io.ReadCloser) (string, int64, error) {
b, err := io.ReadAll(readCloser)
if err != nil {
return "", -1, err
}
err = s.validatePEM(b)
if err != nil {
return "", -1, err
}
err = renameio.WriteFile(name, b, 0o644)
if err != nil {
return "", -1, err
}
return name, int64(len(b)), nil
}
func (s *storage) createFile(name string, readCloser io.ReadCloser) (string, int64, error) {
b, err := io.ReadAll(readCloser)
if err != nil {
return "", -1, err
}
err = renameio.WriteFile(name, b, 0o644)
if err != nil {
return "", -1, err
}
return name, int64(len(b)), nil
}
func (s *storage) remove(name string) error {
switch s.fileType { //nolint:exhaustive
case SSLType, MapsType, GeneralType:
return remove(name)
}
return nil
}
func readFile(name string) (string, error) {
b, err := os.ReadFile(name)
if err != nil {
return "", err
}
return string(b), nil
}
func getFile(dirname, name string) (string, int64, error) {
name = misc.SanitizeFilename(name)
if name == "" {
return "", -1, fmt.Errorf("no file name")
}
f := filepath.Join(dirname, name)
finfo, err := os.Stat(f)
if os.IsNotExist(err) {
return "", -1, conf.NewConfError(conf.ErrObjectDoesNotExist, fmt.Sprintf("file %s doesn't exist in dir: %s", name, dirname))
}
return f, finfo.Size(), nil
}
func remove(name string) error {
if name == "" {
return conf.NewConfError(conf.ErrObjectDoesNotExist, fmt.Sprintf("file %s doesn't exist", name))
}
err := os.Remove(name)
if err != nil {
if !os.IsNotExist(err) {
return err
}
}
return nil
}
func readDir(dirname string) ([]os.FileInfo, error) {
entries, err := os.ReadDir(dirname)
if err != nil {
return nil, err
}
infos := make([]fs.FileInfo, 0, len(entries))
for _, entry := range entries {
info, err := entry.Info()
if err != nil {
return nil, err
}
infos = append(infos, info)
}
return infos, nil
}
func (s storage) validatePEM(raw []byte) error {
crtPool := x509.NewCertPool()
ok := crtPool.AppendCertsFromPEM(raw)
if !ok {
return fmt.Errorf("failed to parse certificate")
}
// HAProxy requires private and public key in same pem file
hasCertificate := false
hasPrivateKey := false
for {
block, rest := pem.Decode(raw)
if block == nil {
break
}
if block.Type == "CERTIFICATE" {
hasCertificate = true
} else { // check all other block types for the key, ignoring non-key blocks
_, err := parsePrivateKey(block.Bytes)
if err == nil {
hasPrivateKey = true
}
}
raw = rest
}
if !(hasCertificate && hasPrivateKey) {
return fmt.Errorf("file should contain both certificate and private key")
}
return nil
}
func parsePrivateKey(der []byte) (crypto.PrivateKey, error) {
if key, err := x509.ParsePKCS1PrivateKey(der); err == nil {
return key, nil
}
if key, err := x509.ParsePKCS8PrivateKey(der); err == nil {
switch key := key.(type) {
case *rsa.PrivateKey, *ecdsa.PrivateKey:
return key, nil
default:
return nil, fmt.Errorf("found unknown private key type in PKCS#8 wrapping")
}
}
if key, err := x509.ParseECPrivateKey(der); err == nil {
return key, nil
}
return nil, fmt.Errorf("failed to parse private key")
}