-
Notifications
You must be signed in to change notification settings - Fork 14
/
mod.go
317 lines (270 loc) · 7.81 KB
/
mod.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
// Package controller implements a controller for minogrpc.
//
// The controller can be used in a CLI to inject a dependency for Mino. It will
// start the overlay on the start command, and make sure resources are cleaned
// when the CLI daemon is stopping.
//
// Documentation Last Review: 07.10.2020
package controller
import (
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/tls"
"crypto/x509"
"encoding/pem"
"io"
"net"
"net/url"
"path/filepath"
"time"
"go.dedis.ch/dela"
"go.dedis.ch/dela/cli"
"go.dedis.ch/dela/cli/node"
"go.dedis.ch/dela/core/store/kv"
"go.dedis.ch/dela/crypto/loader"
"go.dedis.ch/dela/mino"
"go.dedis.ch/dela/mino/minogrpc"
"go.dedis.ch/dela/mino/minogrpc/certs"
"go.dedis.ch/dela/mino/minogrpc/session"
"go.dedis.ch/dela/mino/router"
"go.dedis.ch/dela/mino/router/tree"
"golang.org/x/xerrors"
)
const certKeyName = "cert.key"
// MiniController is an initializer with the minimum set of commands.
//
// - implements node.Initializer
type miniController struct {
random io.Reader
curve elliptic.Curve
}
// NewController returns a new initializer to start an instance of Minogrpc.
func NewController() node.Initializer {
return miniController{
random: rand.Reader,
curve: elliptic.P521(),
}
}
// SetCommands implements node.Initializer. It populates the builder with
// the commands to control Minogrpc.
func (m miniController) SetCommands(builder node.Builder) {
builder.SetStartFlags(
cli.StringFlag{
Name: "listen",
Usage: "set the address to listen on",
Value: "tcp://0.0.0.0:2000",
},
cli.StringFlag{
Name: "public",
Usage: "sets the public node address. By default it uses the same as --listen",
Value: "",
Required: false,
},
cli.StringFlag{
Name: "routing",
Usage: "sets the kind of routing: 'flat' or 'tree'",
Value: "flat",
Required: false,
},
cli.StringFlag{
Name: "certKey",
Usage: "provides the certificate private key path - requires that --certChain is given, too",
Required: false,
},
cli.StringFlag{
Name: "certChain",
Usage: "provides the chain certificate file path - requires that --certKey is given, too",
Required: false,
},
cli.BoolFlag{
Name: "noTLS",
Usage: "dont't serve TLS on the grpc endpoint",
Required: false,
Value: false,
},
)
cmd := builder.SetCommand("minogrpc")
cmd.SetDescription("Network overlay administration")
sub := cmd.SetSubCommand("certificates")
sub.SetDescription("list the certificates of the server")
sub.SetAction(builder.MakeAction(certAction{}))
rm := sub.SetSubCommand("rm")
rm.SetDescription("remove a certificate")
rm.SetFlags(cli.StringFlag{
Name: "address",
Usage: "address associated to the certificate(s), in base64",
Required: true,
})
rm.SetAction(builder.MakeAction(removeAction{}))
sub = cmd.SetSubCommand("token")
sub.SetDescription("generate a token to share to others to join the network")
sub.SetFlags(
cli.DurationFlag{
Name: "expiration",
Usage: "amount of time before expiration",
Value: 24 * time.Hour,
},
)
sub.SetAction(builder.MakeAction(tokenAction{}))
sub = cmd.SetSubCommand("join")
sub.SetDescription("join a network of participants")
sub.SetFlags(
cli.StringFlag{
Name: "token",
Usage: "secret token generated by the node to join",
Required: true,
},
cli.StringFlag{
Name: "address",
Usage: "address of the node to join",
Required: true,
},
cli.StringFlag{
Name: "cert-hash",
Usage: "certificate hash of the distant server",
Required: false,
},
)
sub.SetAction(builder.MakeAction(joinAction{}))
}
// OnStart implements node.Initializer. It starts the minogrpc instance and
// injects it in the dependency resolver.
func (m miniController) OnStart(ctx cli.Flags, inj node.Injector) error {
listenURL, err := url.Parse(ctx.String("listen"))
if err != nil {
return xerrors.Errorf("failed to parse listen URL: %v", err)
}
listen, err := net.ResolveTCPAddr(listenURL.Scheme, listenURL.Host)
if err != nil {
return xerrors.Errorf("failed to resolve tcp address: %v", err)
}
var rter router.Router
switch ctx.String("routing") {
case "flat":
rter = tree.NewRouter(minogrpc.NewAddressFactory(), tree.WithHeight(1))
case "tree":
rter = tree.NewRouter(minogrpc.NewAddressFactory())
default:
return xerrors.Errorf("unknown routing: %s", ctx.String("routing"))
}
var opts []minogrpc.Option
if ctx.Bool("noTLS") {
opts = append(opts, minogrpc.NoTLS())
} else {
opts, err = m.getOptionCert(ctx, inj)
if err != nil {
return xerrors.Errorf("failed to get cert option: %v", err)
}
}
var public *url.URL
if ctx.String("public") != "" {
public, err = url.Parse(ctx.String("public"))
if err != nil {
return xerrors.Errorf("failed to parse public: %v", err)
}
}
o, err := minogrpc.NewMinogrpc(listen, public, rter, opts...)
if err != nil {
return xerrors.Errorf("couldn't make overlay: %v", err)
}
inj.Inject(o)
dela.Logger.Info().Msgf("%v is running", o)
return nil
}
// StoppableMino is an extension of Mino to allow one to stop the instance.
type StoppableMino interface {
mino.Mino
GracefulStop() error
}
// OnStop implements node.Initializer. It stops the network overlay.
func (m miniController) OnStop(inj node.Injector) error {
var o StoppableMino
err := inj.Resolve(&o)
if err != nil {
return xerrors.Errorf("injector: %v", err)
}
err = o.GracefulStop()
if err != nil {
return xerrors.Errorf("while stopping mino: %v", err)
}
return nil
}
func (m miniController) getOptionCert(ctx cli.Flags, inj node.Injector) ([]minogrpc.Option, error) {
var db kv.DB
err := inj.Resolve(&db)
if err != nil {
return nil, xerrors.Errorf("injector: %v", err)
}
certificate := certs.NewDiskStore(db, session.AddressFactory{})
key, err := m.getKey(ctx)
if err != nil {
return nil, xerrors.Errorf("cert private key: %v", err)
}
opts := []minogrpc.Option{
minogrpc.WithCertificateKey(key, key.(interface{ Public() crypto.PublicKey }).Public()),
minogrpc.WithStorage(certificate),
}
certKey := ctx.Path("certKey")
certChain := ctx.Path("certChain")
if certKey == "" {
certKey = filepath.Join(ctx.Path("config"), certKeyName)
}
if certChain != "" {
cert, err := tls.LoadX509KeyPair(certChain, certKey)
if err != nil {
return nil, xerrors.Errorf("failed to load certificate: %v", err)
}
opts = append(opts, minogrpc.WithCert(&cert))
}
return opts, nil
}
func (m miniController) getKey(flags cli.Flags) (crypto.PrivateKey, error) {
loader := loader.NewFileLoader(filepath.Join(flags.Path("config"), certKeyName))
keydata, err := loader.LoadOrCreate(newGenerator(m.random, m.curve))
if err != nil {
return nil, xerrors.Errorf("while loading: %v", err)
}
var key crypto.PrivateKey
block, _ := pem.Decode(keydata)
if block != nil {
keydata = block.Bytes
}
key, err = x509.ParseECPrivateKey(keydata)
if err == nil {
return key, nil
}
key, err = x509.ParsePKCS8PrivateKey(keydata)
if err == nil {
return key, nil
}
return nil, xerrors.Errorf("key parsing failed: %v", err)
}
// generator can generate a private key compatible with the x509 certificate.
//
// - implements loader.Generator
type generator struct {
random io.Reader
curve elliptic.Curve
}
func newGenerator(r io.Reader, c elliptic.Curve) loader.Generator {
return generator{
random: r,
curve: c,
}
}
// Generate implements loader.Generator. It returns the serialized data of a
// private key generated from the an elliptic curve. The data is formatted as a
// PEM block "EC PRIVATE KEY".
func (g generator) Generate() ([]byte, error) {
priv, err := ecdsa.GenerateKey(g.curve, g.random)
if err != nil {
return nil, xerrors.Errorf("ecdsa: %v", err)
}
data, err := x509.MarshalECPrivateKey(priv)
if err != nil {
return nil, xerrors.Errorf("while marshaling: %v", err)
}
return data, nil
}