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
|
package storage
import (
"encoding/json"
"errors"
"fmt"
"regexp"
"strings"
"github.com/schollz/jsonstore"
)
// Filestore is a concrete implementation of the TPMStore interface that
// keeps an in-memory map of AKs and TPM Keys. The current state of the
// in-memory storage can be persisted to a file.
type Filestore struct {
store *jsonstore.JSONStore
filepath string
}
// NewFilestore creates a new instance of a Filestore
//
// TODO: provide options for filepath (with default),
// gzip, persistence en-/disabled, ... ?
func NewFilestore(filepath string) *Filestore {
return &Filestore{
store: new(jsonstore.JSONStore),
filepath: filepath,
}
}
func (s *Filestore) AddKey(k *Key) error {
kk := keyForKey(k.Name)
if err := s.store.Get(kk, nil); err != nil {
nsk := &jsonstore.NoSuchKeyError{}
if errors.As(err, nsk) {
return s.store.Set(kk, k)
}
return err
}
return ErrExists
}
func (s *Filestore) AddAK(ak *AK) error {
akKey := keyForAK(ak.Name)
if err := s.store.Get(akKey, nil); err != nil {
nsk := &jsonstore.NoSuchKeyError{}
if errors.As(err, nsk) {
return s.store.Set(akKey, ak)
}
return err
}
return ErrExists
}
func (s *Filestore) GetKey(name string) (*Key, error) {
key := &Key{}
if err := s.store.Get(keyForKey(name), key); err != nil {
nsk := &jsonstore.NoSuchKeyError{}
if errors.As(err, nsk) {
return nil, ErrNotFound
}
return nil, err
}
return key, nil
}
func (s *Filestore) GetAK(name string) (*AK, error) {
ak := &AK{}
if err := s.store.Get(keyForAK(name), ak); err != nil {
nsk := &jsonstore.NoSuchKeyError{}
if errors.As(err, nsk) {
return nil, ErrNotFound
}
return nil, err
}
return ak, nil
}
func (s *Filestore) UpdateKey(k *Key) error {
kk := keyForKey(k.Name)
if err := s.store.Get(kk, nil); err != nil {
nsk := &jsonstore.NoSuchKeyError{}
if errors.As(err, nsk) {
return ErrNotFound
}
return err
}
return s.store.Set(kk, k)
}
func (s *Filestore) UpdateAK(ak *AK) error {
akKey := keyForAK(ak.Name)
if err := s.store.Get(akKey, nil); err != nil {
nsk := &jsonstore.NoSuchKeyError{}
if errors.As(err, nsk) {
return ErrNotFound
}
return err
}
return s.store.Set(akKey, ak)
}
func (s *Filestore) DeleteKey(name string) error {
kk := keyForKey(name)
if err := s.store.Get(kk, nil); err != nil {
nsk := &jsonstore.NoSuchKeyError{}
if errors.As(err, nsk) {
return ErrNotFound
}
return err
}
s.store.Delete(kk)
return nil
}
func (s *Filestore) DeleteAK(name string) error {
ka := keyForAK(name)
if err := s.store.Get(ka, nil); err != nil {
nsk := &jsonstore.NoSuchKeyError{}
if errors.As(err, nsk) {
return ErrNotFound
}
return err
}
s.store.Delete(ka)
return nil
}
func (s *Filestore) ListKeys() ([]*Key, error) {
keys := s.store.GetAll(regexp.MustCompile(keyPrefix))
var result = make([]*Key, 0, len(keys))
for _, v := range keys {
key := &Key{}
err := json.Unmarshal(v, key)
if err != nil {
return nil, fmt.Errorf("failed unmarshaling key: %w", err)
}
result = append(result, key)
}
return result, nil
}
func (s *Filestore) ListAKs() ([]*AK, error) {
aks := s.store.GetAll(regexp.MustCompile(akPrefix))
var result = make([]*AK, 0, len(aks))
for _, v := range aks {
ak := &AK{}
err := json.Unmarshal(v, ak)
if err != nil {
return nil, fmt.Errorf("failed unmarshaling AK: %w", err)
}
result = append(result, ak)
}
return result, nil
}
func (s *Filestore) ListKeyNames() []string {
keys := s.store.Keys()
var result = make([]string, 0, len(keys))
for _, k := range keys {
if strings.HasPrefix(k, keyPrefix) {
result = append(result, strings.TrimPrefix(k, keyPrefix))
}
}
return result
}
func (s *Filestore) ListAKNames() []string {
keys := s.store.Keys()
var result = make([]string, 0, len(keys))
for _, k := range keys {
if strings.HasPrefix(k, akPrefix) {
result = append(result, strings.TrimPrefix(k, akPrefix))
}
}
return result
}
func (s *Filestore) Persist() error {
return jsonstore.Save(s.store, s.filepath)
}
func (s *Filestore) Load() error {
store, err := jsonstore.Open(s.filepath)
if err != nil { // TODO: handle different types of errors related to file system?
store = new(jsonstore.JSONStore)
}
s.store = store
return nil
}
var _ TPMStore = (*Filestore)(nil)
|
