forked from Consensys/quorum
/
main.go
1274 lines (1188 loc) · 42.6 KB
/
main.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
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// Copyright 2018 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"bufio"
"context"
"crypto/rand"
"crypto/sha256"
"encoding/hex"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"math/big"
"os"
"os/signal"
"path/filepath"
"runtime"
"sort"
"strings"
"syscall"
"time"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/accounts/keystore"
"github.com/ethereum/go-ethereum/accounts/pluggable"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/internal/debug"
"github.com/ethereum/go-ethereum/internal/ethapi"
"github.com/ethereum/go-ethereum/internal/flags"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/plugin"
"github.com/ethereum/go-ethereum/plugin/account"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/rpc"
"github.com/ethereum/go-ethereum/signer/core"
"github.com/ethereum/go-ethereum/signer/fourbyte"
"github.com/ethereum/go-ethereum/signer/rules"
"github.com/ethereum/go-ethereum/signer/storage"
"github.com/mattn/go-colorable"
"github.com/mattn/go-isatty"
"gopkg.in/urfave/cli.v1"
)
const legalWarning = `
WARNING!
Clef is an account management tool. It may, like any software, contain bugs.
Please take care to
- backup your keystore files,
- verify that the keystore(s) can be opened with your password.
Clef is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU General Public License for more details.
`
var (
logLevelFlag = cli.IntFlag{
Name: "loglevel",
Value: 4,
Usage: "log level to emit to the screen",
}
advancedMode = cli.BoolFlag{
Name: "advanced",
Usage: "If enabled, issues warnings instead of rejections for suspicious requests. Default off",
}
acceptFlag = cli.BoolFlag{
Name: "suppress-bootwarn",
Usage: "If set, does not show the warning during boot",
}
keystoreFlag = cli.StringFlag{
Name: "keystore",
Value: filepath.Join(node.DefaultDataDir(), "keystore"),
Usage: "Directory for the keystore",
}
configdirFlag = cli.StringFlag{
Name: "configdir",
Value: DefaultConfigDir(),
Usage: "Directory for Clef configuration",
}
chainIdFlag = cli.Int64Flag{
Name: "chainid",
Value: params.MainnetChainConfig.ChainID.Int64(),
Usage: "Chain id to use for signing (1=mainnet, 3=Ropsten, 4=Rinkeby, 5=Goerli)",
}
rpcPortFlag = cli.IntFlag{
Name: "http.port",
Usage: "HTTP-RPC server listening port",
Value: node.DefaultHTTPPort + 5,
}
signerSecretFlag = cli.StringFlag{
Name: "signersecret",
Usage: "A file containing the (encrypted) master seed to encrypt Clef data, e.g. keystore credentials and ruleset hash",
}
customDBFlag = cli.StringFlag{
Name: "4bytedb-custom",
Usage: "File used for writing new 4byte-identifiers submitted via API",
Value: "./4byte-custom.json",
}
auditLogFlag = cli.StringFlag{
Name: "auditlog",
Usage: "File used to emit audit logs. Set to \"\" to disable",
Value: "audit.log",
}
ruleFlag = cli.StringFlag{
Name: "rules",
Usage: "Path to the rule file to auto-authorize requests with",
}
stdiouiFlag = cli.BoolFlag{
Name: "stdio-ui",
Usage: "Use STDIN/STDOUT as a channel for an external UI. " +
"This means that an STDIN/STDOUT is used for RPC-communication with a e.g. a graphical user " +
"interface, and can be used when Clef is started by an external process.",
}
testFlag = cli.BoolFlag{
Name: "stdio-ui-test",
Usage: "Mechanism to test interface between Clef and UI. Requires 'stdio-ui'.",
}
app = cli.NewApp()
initCommand = cli.Command{
Action: utils.MigrateFlags(initializeSecrets),
Name: "init",
Usage: "Initialize the signer, generate secret storage",
ArgsUsage: "",
Flags: []cli.Flag{
logLevelFlag,
configdirFlag,
},
Description: `
The init command generates a master seed which Clef can use to store credentials and data needed for
the rule-engine to work.`,
}
attestCommand = cli.Command{
Action: utils.MigrateFlags(attestFile),
Name: "attest",
Usage: "Attest that a js-file is to be used",
ArgsUsage: "<sha256sum>",
Flags: []cli.Flag{
logLevelFlag,
configdirFlag,
signerSecretFlag,
},
Description: `
The attest command stores the sha256 of the rule.js-file that you want to use for automatic processing of
incoming requests.
Whenever you make an edit to the rule file, you need to use attestation to tell
Clef that the file is 'safe' to execute.`,
}
setCredentialCommand = cli.Command{
Action: utils.MigrateFlags(setCredential),
Name: "setpw",
Usage: "Store a credential for a keystore file",
ArgsUsage: "<address>",
Flags: []cli.Flag{
logLevelFlag,
configdirFlag,
signerSecretFlag,
},
Description: `
The setpw command stores a password for a given address (keyfile).
`}
delCredentialCommand = cli.Command{
Action: utils.MigrateFlags(removeCredential),
Name: "delpw",
Usage: "Remove a credential for a keystore file",
ArgsUsage: "<address>",
Flags: []cli.Flag{
logLevelFlag,
configdirFlag,
signerSecretFlag,
},
Description: `
The delpw command removes a password for a given address (keyfile).
`}
newAccountCommand = cli.Command{
Action: utils.MigrateFlags(newAccount),
Name: "newaccount",
Usage: "Create a new account",
ArgsUsage: "",
Flags: []cli.Flag{
logLevelFlag,
keystoreFlag,
utils.LightKDFFlag,
acceptFlag,
},
Description: `
The newaccount command creates a new keystore-backed account. It is a convenience-method
which can be used in lieu of an external UI.`,
}
gendocCommand = cli.Command{
Action: GenDoc,
Name: "gendoc",
Usage: "Generate documentation about json-rpc format",
Description: `
The gendoc generates example structures of the json-rpc communication types.
`}
)
// <Quorum>
var supportedPlugins = []plugin.PluginInterfaceName{plugin.AccountPluginInterfaceName}
// </Quorum>
// AppHelpFlagGroups is the application flags, grouped by functionality.
var AppHelpFlagGroups = []flags.FlagGroup{
{
Name: "FLAGS",
Flags: []cli.Flag{
logLevelFlag,
keystoreFlag,
configdirFlag,
chainIdFlag,
utils.LightKDFFlag,
utils.NoUSBFlag,
utils.SmartCardDaemonPathFlag,
utils.HTTPListenAddrFlag,
utils.HTTPVirtualHostsFlag,
utils.IPCDisabledFlag,
utils.IPCPathFlag,
utils.HTTPEnabledFlag,
rpcPortFlag,
signerSecretFlag,
customDBFlag,
auditLogFlag,
ruleFlag,
stdiouiFlag,
testFlag,
advancedMode,
acceptFlag,
// Quorum
utils.PluginSettingsFlag,
utils.PluginLocalVerifyFlag,
utils.PluginPublicKeyFlag,
utils.PluginSkipVerifyFlag,
},
},
}
func init() {
app.Name = "Clef"
app.Usage = "Manage Ethereum account operations"
app.Flags = []cli.Flag{
logLevelFlag,
keystoreFlag,
configdirFlag,
chainIdFlag,
utils.LightKDFFlag,
utils.NoUSBFlag,
utils.SmartCardDaemonPathFlag,
utils.HTTPListenAddrFlag,
utils.HTTPVirtualHostsFlag,
utils.IPCDisabledFlag,
utils.IPCPathFlag,
utils.HTTPEnabledFlag,
rpcPortFlag,
signerSecretFlag,
customDBFlag,
auditLogFlag,
ruleFlag,
stdiouiFlag,
testFlag,
advancedMode,
acceptFlag,
// Quorum
utils.PluginSettingsFlag,
utils.PluginLocalVerifyFlag,
utils.PluginPublicKeyFlag,
utils.PluginSkipVerifyFlag,
}
app.Action = signer
app.Commands = []cli.Command{initCommand,
attestCommand,
setCredentialCommand,
delCredentialCommand,
newAccountCommand,
gendocCommand}
cli.CommandHelpTemplate = flags.CommandHelpTemplate
// Override the default app help template
cli.AppHelpTemplate = flags.ClefAppHelpTemplate
// Override the default app help printer, but only for the global app help
originalHelpPrinter := cli.HelpPrinter
cli.HelpPrinter = func(w io.Writer, tmpl string, data interface{}) {
if tmpl == flags.ClefAppHelpTemplate {
// Render out custom usage screen
originalHelpPrinter(w, tmpl, flags.HelpData{App: data, FlagGroups: AppHelpFlagGroups})
} else if tmpl == flags.CommandHelpTemplate {
// Iterate over all command specific flags and categorize them
categorized := make(map[string][]cli.Flag)
for _, flag := range data.(cli.Command).Flags {
if _, ok := categorized[flag.String()]; !ok {
categorized[flags.FlagCategory(flag, AppHelpFlagGroups)] = append(categorized[flags.FlagCategory(flag, AppHelpFlagGroups)], flag)
}
}
// sort to get a stable ordering
sorted := make([]flags.FlagGroup, 0, len(categorized))
for cat, flgs := range categorized {
sorted = append(sorted, flags.FlagGroup{Name: cat, Flags: flgs})
}
sort.Sort(flags.ByCategory(sorted))
// add sorted array to data and render with default printer
originalHelpPrinter(w, tmpl, map[string]interface{}{
"cmd": data,
"categorizedFlags": sorted,
})
} else {
originalHelpPrinter(w, tmpl, data)
}
}
}
func main() {
if err := app.Run(os.Args); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
func initializeSecrets(c *cli.Context) error {
// Get past the legal message
if err := initialize(c); err != nil {
return err
}
// Ensure the master key does not yet exist, we're not willing to overwrite
configDir := c.GlobalString(configdirFlag.Name)
if err := os.Mkdir(configDir, 0700); err != nil && !os.IsExist(err) {
return err
}
location := filepath.Join(configDir, "masterseed.json")
if _, err := os.Stat(location); err == nil {
return fmt.Errorf("master key %v already exists, will not overwrite", location)
}
// Key file does not exist yet, generate a new one and encrypt it
masterSeed := make([]byte, 256)
num, err := io.ReadFull(rand.Reader, masterSeed)
if err != nil {
return err
}
if num != len(masterSeed) {
return fmt.Errorf("failed to read enough random")
}
n, p := keystore.StandardScryptN, keystore.StandardScryptP
if c.GlobalBool(utils.LightKDFFlag.Name) {
n, p = keystore.LightScryptN, keystore.LightScryptP
}
text := "The master seed of clef will be locked with a password.\nPlease specify a password. Do not forget this password!"
var password string
for {
password = utils.GetPassPhrase(text, true)
if err := core.ValidatePasswordFormat(password); err != nil {
fmt.Printf("invalid password: %v\n", err)
} else {
fmt.Println()
break
}
}
cipherSeed, err := encryptSeed(masterSeed, []byte(password), n, p)
if err != nil {
return fmt.Errorf("failed to encrypt master seed: %v", err)
}
// Double check the master key path to ensure nothing wrote there in between
if err = os.Mkdir(configDir, 0700); err != nil && !os.IsExist(err) {
return err
}
if _, err := os.Stat(location); err == nil {
return fmt.Errorf("master key %v already exists, will not overwrite", location)
}
// Write the file and print the usual warning message
if err = ioutil.WriteFile(location, cipherSeed, 0400); err != nil {
return err
}
fmt.Printf("A master seed has been generated into %s\n", location)
fmt.Printf(`
This is required to be able to store credentials, such as:
* Passwords for keystores (used by rule engine)
* Storage for JavaScript auto-signing rules
* Hash of JavaScript rule-file
You should treat 'masterseed.json' with utmost secrecy and make a backup of it!
* The password is necessary but not enough, you need to back up the master seed too!
* The master seed does not contain your accounts, those need to be backed up separately!
`)
return nil
}
func attestFile(ctx *cli.Context) error {
if len(ctx.Args()) < 1 {
utils.Fatalf("This command requires an argument.")
}
if err := initialize(ctx); err != nil {
return err
}
stretchedKey, err := readMasterKey(ctx, nil)
if err != nil {
utils.Fatalf(err.Error())
}
configDir := ctx.GlobalString(configdirFlag.Name)
vaultLocation := filepath.Join(configDir, common.Bytes2Hex(crypto.Keccak256([]byte("vault"), stretchedKey)[:10]))
confKey := crypto.Keccak256([]byte("config"), stretchedKey)
// Initialize the encrypted storages
configStorage := storage.NewAESEncryptedStorage(filepath.Join(vaultLocation, "config.json"), confKey)
val := ctx.Args().First()
configStorage.Put("ruleset_sha256", val)
log.Info("Ruleset attestation updated", "sha256", val)
return nil
}
func setCredential(ctx *cli.Context) error {
if len(ctx.Args()) < 1 {
utils.Fatalf("This command requires an address to be passed as an argument")
}
if err := initialize(ctx); err != nil {
return err
}
addr := ctx.Args().First()
if !common.IsHexAddress(addr) {
utils.Fatalf("Invalid address specified: %s", addr)
}
address := common.HexToAddress(addr)
password := utils.GetPassPhrase("Please enter a password to store for this address:", true)
fmt.Println()
stretchedKey, err := readMasterKey(ctx, nil)
if err != nil {
utils.Fatalf(err.Error())
}
configDir := ctx.GlobalString(configdirFlag.Name)
vaultLocation := filepath.Join(configDir, common.Bytes2Hex(crypto.Keccak256([]byte("vault"), stretchedKey)[:10]))
pwkey := crypto.Keccak256([]byte("credentials"), stretchedKey)
pwStorage := storage.NewAESEncryptedStorage(filepath.Join(vaultLocation, "credentials.json"), pwkey)
pwStorage.Put(address.Hex(), password)
log.Info("Credential store updated", "set", address)
return nil
}
func removeCredential(ctx *cli.Context) error {
if len(ctx.Args()) < 1 {
utils.Fatalf("This command requires an address to be passed as an argument")
}
if err := initialize(ctx); err != nil {
return err
}
addr := ctx.Args().First()
if !common.IsHexAddress(addr) {
utils.Fatalf("Invalid address specified: %s", addr)
}
address := common.HexToAddress(addr)
stretchedKey, err := readMasterKey(ctx, nil)
if err != nil {
utils.Fatalf(err.Error())
}
configDir := ctx.GlobalString(configdirFlag.Name)
vaultLocation := filepath.Join(configDir, common.Bytes2Hex(crypto.Keccak256([]byte("vault"), stretchedKey)[:10]))
pwkey := crypto.Keccak256([]byte("credentials"), stretchedKey)
pwStorage := storage.NewAESEncryptedStorage(filepath.Join(vaultLocation, "credentials.json"), pwkey)
pwStorage.Del(address.Hex())
log.Info("Credential store updated", "unset", address)
return nil
}
func newAccount(c *cli.Context) error {
if err := initialize(c); err != nil {
return err
}
// The newaccount is meant for users using the CLI, since 'real' external
// UIs can use the UI-api instead. So we'll just use the native CLI UI here.
var (
ui = core.NewCommandlineUI()
pwStorage storage.Storage = &storage.NoStorage{}
ksLoc = c.GlobalString(keystoreFlag.Name)
lightKdf = c.GlobalBool(utils.LightKDFFlag.Name)
)
log.Info("Starting clef", "keystore", ksLoc, "light-kdf", lightKdf)
am, _, err := startClefAccountManagerWithPlugins(c, ksLoc, true, lightKdf, "")
if err != nil {
return err
}
// This gives is us access to the external API
apiImpl := core.NewSignerAPI(am, 0, true, ui, nil, false, pwStorage)
// This gives us access to the internal API
internalApi := core.NewUIServerAPI(apiImpl)
addr, err := internalApi.New(context.Background())
if err == nil {
fmt.Printf("Generated account %v\n", addr.String())
}
return err
}
func initialize(c *cli.Context) error {
// Set up the logger to print everything
logOutput := os.Stdout
if c.GlobalBool(stdiouiFlag.Name) {
logOutput = os.Stderr
// If using the stdioui, we can't do the 'confirm'-flow
if !c.GlobalBool(acceptFlag.Name) {
fmt.Fprint(logOutput, legalWarning)
}
} else if !c.GlobalBool(acceptFlag.Name) {
if !confirm(legalWarning) {
return fmt.Errorf("aborted by user")
}
fmt.Println()
}
usecolor := (isatty.IsTerminal(os.Stderr.Fd()) || isatty.IsCygwinTerminal(os.Stderr.Fd())) && os.Getenv("TERM") != "dumb"
output := io.Writer(logOutput)
if usecolor {
output = colorable.NewColorable(logOutput)
}
log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(c.Int(logLevelFlag.Name)), log.StreamHandler(output, log.TerminalFormat(usecolor))))
return nil
}
// ipcEndpoint resolves an IPC endpoint based on a configured value, taking into
// account the set data folders as well as the designated platform we're currently
// running on.
func ipcEndpoint(ipcPath, datadir string) string {
// On windows we can only use plain top-level pipes
if runtime.GOOS == "windows" {
if strings.HasPrefix(ipcPath, `\\.\pipe\`) {
return ipcPath
}
return `\\.\pipe\` + ipcPath
}
// Resolve names into the data directory full paths otherwise
if filepath.Base(ipcPath) == ipcPath {
if datadir == "" {
return filepath.Join(os.TempDir(), ipcPath)
}
return filepath.Join(datadir, ipcPath)
}
return ipcPath
}
func signer(c *cli.Context) error {
// If we have some unrecognized command, bail out
if args := c.Args(); len(args) > 0 {
return fmt.Errorf("invalid command: %q", args[0])
}
if err := initialize(c); err != nil {
return err
}
var (
ui core.UIClientAPI
)
if c.GlobalBool(stdiouiFlag.Name) {
log.Info("Using stdin/stdout as UI-channel")
ui = core.NewStdIOUI()
} else {
log.Info("Using CLI as UI-channel")
ui = core.NewCommandlineUI()
}
// 4bytedb data
fourByteLocal := c.GlobalString(customDBFlag.Name)
db, err := fourbyte.NewWithFile(fourByteLocal)
if err != nil {
utils.Fatalf(err.Error())
}
embeds, locals := db.Size()
log.Info("Loaded 4byte database", "embeds", embeds, "locals", locals, "local", fourByteLocal)
var (
api core.ExternalAPI
pwStorage storage.Storage = &storage.NoStorage{}
)
configDir := c.GlobalString(configdirFlag.Name)
if stretchedKey, err := readMasterKey(c, ui); err != nil {
log.Warn("Failed to open master, rules disabled", "err", err)
} else {
vaultLocation := filepath.Join(configDir, common.Bytes2Hex(crypto.Keccak256([]byte("vault"), stretchedKey)[:10]))
// Generate domain specific keys
pwkey := crypto.Keccak256([]byte("credentials"), stretchedKey)
jskey := crypto.Keccak256([]byte("jsstorage"), stretchedKey)
confkey := crypto.Keccak256([]byte("config"), stretchedKey)
// Initialize the encrypted storages
pwStorage = storage.NewAESEncryptedStorage(filepath.Join(vaultLocation, "credentials.json"), pwkey)
jsStorage := storage.NewAESEncryptedStorage(filepath.Join(vaultLocation, "jsstorage.json"), jskey)
configStorage := storage.NewAESEncryptedStorage(filepath.Join(vaultLocation, "config.json"), confkey)
// Do we have a rule-file?
if ruleFile := c.GlobalString(ruleFlag.Name); ruleFile != "" {
ruleJS, err := ioutil.ReadFile(ruleFile)
if err != nil {
log.Warn("Could not load rules, disabling", "file", ruleFile, "err", err)
} else {
shasum := sha256.Sum256(ruleJS)
foundShaSum := hex.EncodeToString(shasum[:])
storedShasum, _ := configStorage.Get("ruleset_sha256")
if storedShasum != foundShaSum {
log.Warn("Rule hash not attested, disabling", "hash", foundShaSum, "attested", storedShasum)
} else {
// Initialize rules
ruleEngine, err := rules.NewRuleEvaluator(ui, jsStorage)
if err != nil {
utils.Fatalf(err.Error())
}
ruleEngine.Init(string(ruleJS))
ui = ruleEngine
log.Info("Rule engine configured", "file", c.String(ruleFlag.Name))
}
}
}
}
var (
chainId = c.GlobalInt64(chainIdFlag.Name)
ksLoc = c.GlobalString(keystoreFlag.Name)
lightKdf = c.GlobalBool(utils.LightKDFFlag.Name)
advanced = c.GlobalBool(advancedMode.Name)
nousb = c.GlobalBool(utils.NoUSBFlag.Name)
scpath = c.GlobalString(utils.SmartCardDaemonPathFlag.Name)
)
log.Info("Starting signer", "chainid", chainId, "keystore", ksLoc,
"light-kdf", lightKdf, "advanced", advanced)
am, pm, err := startClefAccountManagerWithPlugins(c, ksLoc, nousb, lightKdf, scpath)
if err != nil {
return err
}
apiImpl := core.NewSignerAPI(am, chainId, nousb, ui, db, advanced, pwStorage)
// Establish the bidirectional communication, by creating a new UI backend and registering
// it with the UI.
ui.RegisterUIServer(core.NewUIServerAPI(apiImpl))
api = apiImpl
// Audit logging
if logfile := c.GlobalString(auditLogFlag.Name); logfile != "" {
api, err = core.NewAuditLogger(logfile, api)
if err != nil {
utils.Fatalf(err.Error())
}
log.Info("Audit logs configured", "file", logfile)
}
// register signer API with server
var (
extapiURL = "n/a"
ipcapiURL = "n/a"
)
rpcAPI := []rpc.API{
{
Namespace: "account",
Public: true,
Service: api,
Version: "1.0"},
}
// <Quorum>
if pm != nil {
rpcAPI = addPluginAPIs(pm, rpcAPI, ui)
}
// </Quorum>
if c.GlobalBool(utils.HTTPEnabledFlag.Name) {
vhosts := utils.SplitAndTrim(c.GlobalString(utils.HTTPVirtualHostsFlag.Name))
cors := utils.SplitAndTrim(c.GlobalString(utils.HTTPCORSDomainFlag.Name))
srv := rpc.NewServer()
err := node.RegisterApisFromWhitelist(rpcAPI, []string{"account", "plugin@account"}, srv, true)
if err != nil {
utils.Fatalf("Could not register API: %w", err)
}
handler := node.NewHTTPHandlerStack(srv, cors, vhosts)
// set port
port := c.Int(rpcPortFlag.Name)
// start http server
httpEndpoint := fmt.Sprintf("%s:%d", c.GlobalString(utils.HTTPListenAddrFlag.Name), port)
httpServer, addr, _, err := node.StartHTTPEndpoint(httpEndpoint, rpc.DefaultHTTPTimeouts, handler, nil)
if err != nil {
utils.Fatalf("Could not start RPC api: %v", err)
}
extapiURL = fmt.Sprintf("http://%v/", addr)
log.Info("HTTP endpoint opened", "url", extapiURL)
defer func() {
// Don't bother imposing a timeout here.
httpServer.Shutdown(context.Background())
log.Info("HTTP endpoint closed", "url", extapiURL)
}()
}
if !c.GlobalBool(utils.IPCDisabledFlag.Name) {
givenPath := c.GlobalString(utils.IPCPathFlag.Name)
ipcapiURL = ipcEndpoint(filepath.Join(givenPath, "clef.ipc"), configDir)
listener, _, err := rpc.StartIPCEndpoint(ipcapiURL, rpcAPI)
if err != nil {
utils.Fatalf("Could not start IPC api: %v", err)
}
log.Info("IPC endpoint opened", "url", ipcapiURL)
defer func() {
listener.Close()
log.Info("IPC endpoint closed", "url", ipcapiURL)
}()
}
if c.GlobalBool(testFlag.Name) {
log.Info("Performing UI test")
go testExternalUI(apiImpl)
}
ui.OnSignerStartup(core.StartupInfo{
Info: map[string]interface{}{
"intapi_version": core.InternalAPIVersion,
"extapi_version": core.ExternalAPIVersion,
"extapi_http": extapiURL,
"extapi_ipc": ipcapiURL,
},
})
abortChan := make(chan os.Signal, 1)
signal.Notify(abortChan, os.Interrupt)
sig := <-abortChan
log.Info("Exiting...", "signal", sig)
return nil
}
// <Quorum/>
// startPluginManager gets plugin config and starts a new PluginManager
func startPluginManager(c *cli.Context) (*plugin.PluginManager, *plugin.Settings, error) {
nodeConf := new(node.Config)
if err := utils.SetPlugins(c, nodeConf); err != nil {
return nil, nil, err
}
pluginConf := nodeConf.Plugins
if err := pluginConf.CheckSettingsAreSupported(supportedPlugins); err != nil {
return nil, nil, err
}
pm, err := plugin.NewPluginManager("clef", pluginConf, c.Bool(utils.PluginSkipVerifyFlag.Name), c.Bool(utils.PluginLocalVerifyFlag.Name), c.String(utils.PluginPublicKeyFlag.Name))
if err != nil {
return nil, nil, err
}
if err := pm.Start(); err != nil {
return nil, nil, err
}
return pm, pluginConf, nil
}
// addPluginAPIs adds the exposed plugin APIs to Clef's API.
// It alters some of the plugin APIs so that calls to them will require UI approval.
func addPluginAPIs(pm *plugin.PluginManager, rpcAPI []rpc.API, ui core.UIClientAPI) []rpc.API {
// pm.APIs() returns a slice of values hence the following approach that may look clumsy
var (
stdPluginAPIs = pm.APIs()
approvalPluginAPIs = make([]rpc.API, len(stdPluginAPIs))
)
for i, api := range stdPluginAPIs {
switch s := api.Service.(type) {
case account.CreatorService:
api.Service = core.NewApprovalCreatorService(s, ui)
}
approvalPluginAPIs[i] = api
}
return append(rpcAPI, approvalPluginAPIs...)
}
// DefaultConfigDir is the default config directory to use for the vaults and other
// persistence requirements.
func DefaultConfigDir() string {
// Try to place the data folder in the user's home dir
home := utils.HomeDir()
if home != "" {
if runtime.GOOS == "darwin" {
return filepath.Join(home, "Library", "Signer")
} else if runtime.GOOS == "windows" {
appdata := os.Getenv("APPDATA")
if appdata != "" {
return filepath.Join(appdata, "Signer")
}
return filepath.Join(home, "AppData", "Roaming", "Signer")
}
return filepath.Join(home, ".clef")
}
// As we cannot guess a stable location, return empty and handle later
return ""
}
func readMasterKey(ctx *cli.Context, ui core.UIClientAPI) ([]byte, error) {
var (
file string
configDir = ctx.GlobalString(configdirFlag.Name)
)
if ctx.GlobalIsSet(signerSecretFlag.Name) {
file = ctx.GlobalString(signerSecretFlag.Name)
} else {
file = filepath.Join(configDir, "masterseed.json")
}
if err := checkFile(file); err != nil {
return nil, err
}
cipherKey, err := ioutil.ReadFile(file)
if err != nil {
return nil, err
}
var password string
// If ui is not nil, get the password from ui.
if ui != nil {
resp, err := ui.OnInputRequired(core.UserInputRequest{
Title: "Master Password",
Prompt: "Please enter the password to decrypt the master seed",
IsPassword: true})
if err != nil {
return nil, err
}
password = resp.Text
} else {
password = utils.GetPassPhrase("Decrypt master seed of clef", false)
}
masterSeed, err := decryptSeed(cipherKey, password)
if err != nil {
return nil, fmt.Errorf("failed to decrypt the master seed of clef")
}
if len(masterSeed) < 256 {
return nil, fmt.Errorf("master seed of insufficient length, expected >255 bytes, got %d", len(masterSeed))
}
// Create vault location
vaultLocation := filepath.Join(configDir, common.Bytes2Hex(crypto.Keccak256([]byte("vault"), masterSeed)[:10]))
err = os.Mkdir(vaultLocation, 0700)
if err != nil && !os.IsExist(err) {
return nil, err
}
return masterSeed, nil
}
// checkFile is a convenience function to check if a file
// * exists
// * is mode 0400 (unix only)
func checkFile(filename string) error {
info, err := os.Stat(filename)
if err != nil {
return fmt.Errorf("failed stat on %s: %v", filename, err)
}
// Check the unix permission bits
// However, on windows, we cannot use the unix perm-bits, see
// https://github.com/ethereum/go-ethereum/issues/20123
if runtime.GOOS != "windows" && info.Mode().Perm()&0377 != 0 {
return fmt.Errorf("file (%v) has insecure file permissions (%v)", filename, info.Mode().String())
}
return nil
}
// confirm displays a text and asks for user confirmation
func confirm(text string) bool {
fmt.Print(text)
fmt.Printf("\nEnter 'ok' to proceed:\n> ")
text, err := bufio.NewReader(os.Stdin).ReadString('\n')
if err != nil {
log.Crit("Failed to read user input", "err", err)
}
if text := strings.TrimSpace(text); text == "ok" {
return true
}
return false
}
func testExternalUI(api *core.SignerAPI) {
ctx := context.WithValue(context.Background(), "remote", "clef binary")
ctx = context.WithValue(ctx, "scheme", "in-proc")
ctx = context.WithValue(ctx, "local", "main")
errs := make([]string, 0)
a := common.HexToAddress("0xdeadbeef000000000000000000000000deadbeef")
addErr := func(errStr string) {
log.Info("Test error", "err", errStr)
errs = append(errs, errStr)
}
queryUser := func(q string) string {
resp, err := api.UI.OnInputRequired(core.UserInputRequest{
Title: "Testing",
Prompt: q,
})
if err != nil {
addErr(err.Error())
}
return resp.Text
}
expectResponse := func(testcase, question, expect string) {
if got := queryUser(question); got != expect {
addErr(fmt.Sprintf("%s: got %v, expected %v", testcase, got, expect))
}
}
expectApprove := func(testcase string, err error) {
if err == nil || err == accounts.ErrUnknownAccount {
return
}
addErr(fmt.Sprintf("%v: expected no error, got %v", testcase, err.Error()))
}
expectDeny := func(testcase string, err error) {
if err == nil || err != core.ErrRequestDenied {
addErr(fmt.Sprintf("%v: expected ErrRequestDenied, got %v", testcase, err))
}
}
var delay = 1 * time.Second
// Test display of info and error
{
api.UI.ShowInfo("If you see this message, enter 'yes' to next question")
time.Sleep(delay)
expectResponse("showinfo", "Did you see the message? [yes/no]", "yes")
api.UI.ShowError("If you see this message, enter 'yes' to the next question")
time.Sleep(delay)
expectResponse("showerror", "Did you see the message? [yes/no]", "yes")
}
{ // Sign data test - clique header
api.UI.ShowInfo("Please approve the next request for signing a clique header")
time.Sleep(delay)
cliqueHeader := types.Header{
ParentHash: common.HexToHash("0000H45H"),
UncleHash: common.HexToHash("0000H45H"),
Coinbase: common.HexToAddress("0000H45H"),
Root: common.HexToHash("0000H00H"),
TxHash: common.HexToHash("0000H45H"),
ReceiptHash: common.HexToHash("0000H45H"),
Difficulty: big.NewInt(1337),
Number: big.NewInt(1337),
GasLimit: 1338,
GasUsed: 1338,
Time: 1338,
Extra: []byte("Extra data Extra data Extra data Extra data Extra data Extra data Extra data Extra data"),
MixDigest: common.HexToHash("0x0000H45H"),
}
cliqueRlp, err := rlp.EncodeToBytes(cliqueHeader)
if err != nil {
utils.Fatalf("Should not error: %v", err)
}
addr, _ := common.NewMixedcaseAddressFromString("0x0011223344556677889900112233445566778899")
_, err = api.SignData(ctx, accounts.MimetypeClique, *addr, hexutil.Encode(cliqueRlp))
expectApprove("signdata - clique header", err)
}
{ // Sign data test - typed data
api.UI.ShowInfo("Please approve the next request for signing EIP-712 typed data")
time.Sleep(delay)
addr, _ := common.NewMixedcaseAddressFromString("0x0011223344556677889900112233445566778899")
data := `{"types":{"EIP712Domain":[{"name":"name","type":"string"},{"name":"version","type":"string"},{"name":"chainId","type":"uint256"},{"name":"verifyingContract","type":"address"}],"Person":[{"name":"name","type":"string"},{"name":"test","type":"uint8"},{"name":"wallet","type":"address"}],"Mail":[{"name":"from","type":"Person"},{"name":"to","type":"Person"},{"name":"contents","type":"string"}]},"primaryType":"Mail","domain":{"name":"Ether Mail","version":"1","chainId":"1","verifyingContract":"0xCCCcccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC"},"message":{"from":{"name":"Cow","test":"3","wallet":"0xcD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826"},"to":{"name":"Bob","wallet":"0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB","test":"2"},"contents":"Hello, Bob!"}}`
//_, err := api.SignData(ctx, accounts.MimetypeTypedData, *addr, hexutil.Encode([]byte(data)))
var typedData core.TypedData
json.Unmarshal([]byte(data), &typedData)
_, err := api.SignTypedData(ctx, *addr, typedData)
expectApprove("sign 712 typed data", err)
}
{ // Sign data test - plain text
api.UI.ShowInfo("Please approve the next request for signing text")
time.Sleep(delay)
addr, _ := common.NewMixedcaseAddressFromString("0x0011223344556677889900112233445566778899")
_, err := api.SignData(ctx, accounts.MimetypeTextPlain, *addr, hexutil.Encode([]byte("hello world")))
expectApprove("signdata - text", err)
}
{ // Sign data test - plain text reject
api.UI.ShowInfo("Please deny the next request for signing text")
time.Sleep(delay)
addr, _ := common.NewMixedcaseAddressFromString("0x0011223344556677889900112233445566778899")
_, err := api.SignData(ctx, accounts.MimetypeTextPlain, *addr, hexutil.Encode([]byte("hello world")))
expectDeny("signdata - text", err)
}
{ // Sign transaction
api.UI.ShowInfo("Please reject next transaction")
time.Sleep(delay)