-
Notifications
You must be signed in to change notification settings - Fork 21
/
Copy pathconfig.go
1408 lines (1258 loc) · 55.5 KB
/
config.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 (c) 2013-2017 The btcsuite developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package main
import (
"bufio"
"encoding/hex"
"errors"
"fmt"
"io"
"net"
"os"
"path/filepath"
"runtime"
"sort"
"strconv"
"strings"
"time"
"github.com/btcsuite/go-socks/socks"
flags "github.com/jessevdk/go-flags"
"github.com/utreexo/utreexod/blockchain"
"github.com/utreexo/utreexod/btcutil"
"github.com/utreexo/utreexod/chaincfg"
"github.com/utreexo/utreexod/chaincfg/chainhash"
"github.com/utreexo/utreexod/connmgr"
"github.com/utreexo/utreexod/database"
_ "github.com/utreexo/utreexod/database/ffldb"
"github.com/utreexo/utreexod/mempool"
"github.com/utreexo/utreexod/peer"
)
const (
defaultConfigFilename = "utreexod.conf"
defaultDataDirname = "data"
defaultLogLevel = "info"
defaultLogDirname = "logs"
defaultLogFilename = "utreexod.log"
defaultMaxPeers = 125
defaultBanDuration = time.Hour * 24
defaultBanThreshold = 300
defaultConnectTimeout = time.Second * 30
defaultMaxRPCClients = 10
defaultMaxRPCWebsockets = 25
defaultMaxRPCConcurrentReqs = 20
defaultDbType = "ffldb"
defaultElectrumServerPort = "50001"
defaultTLSElectrumServerPort = "50002"
defaultFreeTxRelayLimit = 15.0
defaultTrickleInterval = peer.DefaultTrickleInterval
defaultBlockMinSize = 0
defaultBlockMaxSize = 750000
defaultBlockMinWeight = 0
defaultBlockMaxWeight = 3000000
blockMaxSizeMin = 1000
blockMaxSizeMax = blockchain.MaxBlockBaseSize - 1000
blockMaxWeightMin = 4000
blockMaxWeightMax = blockchain.MaxBlockWeight - 4000
defaultGenerate = false
defaultMaxOrphanTransactions = 100
defaultMaxOrphanTxSize = 100000
defaultSigCacheMaxSize = 100000
defaultUtxoCacheMaxSizeMiB = 250
defaultCookieFileName = ".cookie"
sampleConfigFilename = "sample-utreexod.conf"
defaultTxIndex = false
defaultTTLIndex = false
defaultAddrIndex = false
pruneMinSize = 550
)
var (
defaultHomeDir = btcutil.AppDataDir("utreexod", false)
defaultConfigFile = filepath.Join(defaultHomeDir, defaultConfigFilename)
defaultDataDir = filepath.Join(defaultHomeDir, defaultDataDirname)
knownDbTypes = database.SupportedDrivers()
defaultRPCKeyFile = filepath.Join(defaultHomeDir, "rpc.key")
defaultRPCCertFile = filepath.Join(defaultHomeDir, "rpc.cert")
defaultLogDir = filepath.Join(defaultHomeDir, defaultLogDirname)
)
// runServiceCommand is only set to a real function on Windows. It is used
// to parse and execute service commands specified via the -s flag.
var runServiceCommand func(string) error
// minUint32 is a helper function to return the minimum of two uint32s.
// This avoids a math import and the need to cast to floats.
func minUint32(a, b uint32) uint32 {
if a < b {
return a
}
return b
}
// config defines the configuration options for btcd.
//
// See loadConfig for details on the configuration load process.
type config struct {
// General application behavior.
ShowVersion bool `short:"V" long:"version" description:"Display version information and exit"`
DataDir string `short:"b" long:"datadir" description:"Directory to store data"`
LogDir string `long:"logdir" description:"Directory to log output."`
ConfigFile string `short:"C" long:"configfile" description:"Path to configuration file"`
DebugLevel string `short:"d" long:"debuglevel" description:"Logging level for all subsystems {trace, debug, info, warn, error, critical} -- You may also specify <subsystem>=<level>,<subsystem2>=<level>,... to set the log level for individual subsystems -- Use show to list available subsystems"`
DbType string `long:"dbtype" description:"Database backend to use for the Block Chain"`
SigCacheMaxSize uint `long:"sigcachemaxsize" description:"The maximum number of entries in the signature verification cache"`
UtxoCacheMaxSizeMiB uint `long:"utxocachemaxsize" description:"The maximum size in MiB of the UTXO cache"`
NoUtreexo bool `long:"noutreexo" description:"Disable utreexo compact state during block validation"`
NoWinService bool `long:"nowinservice" description:"Do not start as a background service on Windows -- NOTE: This flag only works on the command line, not in the config file"`
Prune uint64 `long:"prune" description:"Prune already validated blocks from the database. Must specify a target size in MiB (minimum value of 550, default of 550. Set to 0 to disable pruning.)"`
// Profiling options.
Profile string `long:"profile" description:"Enable HTTP profiling on given port -- NOTE port must be between 1024 and 65536"`
CPUProfile string `long:"cpuprofile" description:"Write CPU profile to the specified file"`
MemoryProfile string `long:"memprofile" description:"Write memory profile to the specified file"`
TraceProfile string `long:"traceprofile" description:"Write trace profile to the specified file"`
// Network options.
TestNet3 bool `long:"testnet" description:"Use the test network"`
RegressionTest bool `long:"regtest" description:"Use the regression test network"`
SimNet bool `long:"simnet" description:"Use the simulation test network"`
SigNet bool `long:"signet" description:"Use the signet test network"`
SigNetChallenge string `long:"signetchallenge" description:"Connect to a custom signet network defined by this challenge instead of using the global default signet test network -- Can be specified multiple times"`
// RPC server options and policy.
DisableTLS bool `long:"notls" description:"Disable TLS for the RPC server -- NOTE: This is only allowed if the RPC server is bound to localhost"`
DisableRPC bool `long:"norpc" description:"Disable built-in RPC server -- NOTE: The RPC server is disabled by default if no rpcuser/rpcpass or rpclimituser/rpclimitpass is specified"`
RPCCert string `long:"rpccert" description:"File containing the certificate file"`
RPCKey string `long:"rpckey" description:"File containing the certificate key"`
RPCLimitPass string `long:"rpclimitpass" default-mask:"-" description:"Password for limited RPC connections"`
RPCLimitUser string `long:"rpclimituser" description:"Username for limited RPC connections"`
RPCListeners []string `long:"rpclisten" description:"Add an interface/port to listen for RPC connections (default port: 8334, testnet: 18334)"`
RPCMaxClients int `long:"rpcmaxclients" description:"Max number of RPC clients for standard connections"`
RPCMaxConcurrentReqs int `long:"rpcmaxconcurrentreqs" description:"Max number of concurrent RPC requests that may be processed concurrently"`
RPCMaxWebsockets int `long:"rpcmaxwebsockets" description:"Max number of RPC websocket connections"`
RPCQuirks bool `long:"rpcquirks" description:"Mirror some JSON-RPC quirks of Bitcoin Core -- NOTE: Discouraged unless interoperability issues need to be worked around"`
RPCPass string `short:"P" long:"rpcpass" default-mask:"-" description:"Password for RPC connections"`
RPCUser string `short:"u" long:"rpcuser" description:"Username for RPC connections"`
// P2P proxy and Tor settings.
Proxy string `long:"proxy" description:"Connect via SOCKS5 proxy (eg. 127.0.0.1:9050)"`
ProxyPass string `long:"proxypass" default-mask:"-" description:"Password for proxy server"`
ProxyUser string `long:"proxyuser" description:"Username for proxy server"`
NoOnion bool `long:"noonion" description:"Disable connecting to tor hidden services"`
OnionProxy string `long:"onion" description:"Connect to tor hidden services via SOCKS5 proxy (eg. 127.0.0.1:9050)"`
OnionProxyPass string `long:"onionpass" default-mask:"-" description:"Password for onion proxy server"`
OnionProxyUser string `long:"onionuser" description:"Username for onion proxy server"`
TorIsolation bool `long:"torisolation" description:"Enable Tor stream isolation by randomizing user credentials for each connection."`
// P2P network options.
AddPeers []string `short:"a" long:"addpeer" description:"Add a peer to connect with at startup"`
ConnectPeers []string `long:"connect" description:"Connect only to the specified peers at startup"`
Listeners []string `long:"listen" description:"Add an interface/port to listen for connections (default all interfaces port: 8333, testnet: 18333)"`
DisableListen bool `long:"nolisten" description:"Disable listening for incoming connections -- NOTE: Listening is automatically disabled if the --connect or --proxy options are used without also specifying listen interfaces via --listen"`
MaxPeers int `long:"maxpeers" description:"Max number of inbound and outbound peers"`
UserAgentComments []string `long:"uacomment" description:"Comment to add to the user agent -- See BIP 14 for more information."`
TrickleInterval time.Duration `long:"trickleinterval" description:"Minimum time between attempts to send new inventory to a connected peer"`
// P2P network discovery options.
DisableDNSSeed bool `long:"nodnsseed" description:"Disable DNS seeding for peers"`
ExternalIPs []string `long:"externalip" description:"Add an ip to the list of local addresses we claim to listen on to peers"`
SigNetSeedNode []string `long:"signetseednode" description:"Specify a seed node for the signet network instead of using the global default signet network seed nodes"`
Upnp bool `long:"upnp" description:"Use UPnP to map our listening port outside of NAT"`
// Banning options.
AgentBlacklist []string `long:"agentblacklist" description:"A comma separated list of user-agent substrings which will cause utreexod to reject any peers whose user-agent contains any of the blacklisted substrings."`
AgentWhitelist []string `long:"agentwhitelist" description:"A comma separated list of user-agent substrings which will cause utreexod to require all peers' user-agents to contain one of the whitelisted substrings. The blacklist is applied before the blacklist, and an empty whitelist will allow all agents that do not fail the blacklist."`
Whitelists []string `long:"whitelist" description:"Add an IP network or IP that will not be banned. (eg. 192.168.1.0/24 or ::1)"`
DisableBanning bool `long:"nobanning" description:"Disable banning of misbehaving peers"`
BanDuration time.Duration `long:"banduration" description:"How long to ban misbehaving peers. Valid time units are {s, m, h}. Minimum 1 second"`
BanThreshold uint32 `long:"banthreshold" description:"Maximum allowed ban score before disconnecting and banning misbehaving peers."`
// Chain related options.
AddCheckpoints []string `long:"addcheckpoint" description:"Add a custom checkpoint. Format: '<height>:<hash>'"`
DisableCheckpoints bool `long:"nocheckpoints" description:"Disable built-in checkpoints. Don't do this unless you know what you're doing."`
NoAssumeUtreexo bool `long:"noassumeutreexo" description:"Disable starting from the assume utreexo point and start the initial block download from the genesis block"`
// Relay and mempool policy.
BlocksOnly bool `long:"blocksonly" description:"Do not accept transactions from remote peers."`
MaxOrphanTxs int `long:"maxorphantx" description:"Max number of orphan transactions to keep in memory"`
MinRelayTxFee float64 `long:"minrelaytxfee" description:"The minimum transaction fee in BTC/kB to be considered a non-zero fee."`
NoRelayPriority bool `long:"norelaypriority" description:"Do not require free or low-fee transactions to have high priority for relaying"`
RelayNonStd bool `long:"relaynonstd" description:"Relay non-standard transactions regardless of the default settings for the active network."`
RejectNonStd bool `long:"rejectnonstd" description:"Reject non-standard transactions regardless of the default settings for the active network."`
RejectReplacement bool `long:"rejectreplacement" description:"Reject transactions that attempt to replace existing transactions within the mempool through the Replace-By-Fee (RBF) signaling policy."`
FreeTxRelayLimit float64 `long:"limitfreerelay" description:"Limit relay of transactions with no transaction fee to the given amount in thousands of bytes per minute"`
// Mining options and policy.
Generate bool `long:"generate" description:"Generate (mine) bitcoins using the CPU"`
MiningAddrs []string `long:"miningaddr" description:"Add the specified payment address to the list of addresses to use for generated blocks -- At least one address is required if the generate option is set"`
BlockMaxSize uint32 `long:"blockmaxsize" description:"Maximum block size in bytes to be used when creating a block"`
BlockMinSize uint32 `long:"blockminsize" description:"Mininum block size in bytes to be used when creating a block"`
BlockMaxWeight uint32 `long:"blockmaxweight" description:"Maximum block weight to be used when creating a block"`
BlockMinWeight uint32 `long:"blockminweight" description:"Mininum block weight to be used when creating a block"`
BlockPrioritySize uint32 `long:"blockprioritysize" description:"Size in bytes for high-priority/low-fee transactions when creating a block"`
// Indexing options.
AddrIndex bool `long:"addrindex" description:"Maintain a full address-based transaction index which makes the searchrawtransactions RPC available"`
TxIndex bool `long:"txindex" description:"Maintain a full hash-based transaction index which makes all transactions available via the getrawtransaction RPC"`
TTLIndex bool `long:"ttlindex" description:"Maintain a full time to live index for all stxos available via the getttl RPC"`
UtreexoProofIndex bool `long:"utreexoproofindex" description:"Maintain a utreexo proof for all blocks"`
FlatUtreexoProofIndex bool `long:"flatutreexoproofindex" description:"Maintain a utreexo proof for all blocks in flat files"`
UtreexoProofIndexMaxMemory int64 `long:"utreexoproofindexmaxmemory" description:"The maxmimum memory in mebibytes (MiB) that the utreexo proof indexes will use up. Default of 500MiB. Minimum of 250MiB"`
CFilters bool `long:"cfilters" description:"Enable committed filtering (CF) support"`
NoPeerBloomFilters bool `long:"nopeerbloomfilters" description:"Disable bloom filtering support"`
DropAddrIndex bool `long:"dropaddrindex" description:"Deletes the address-based transaction index from the database on start up and then exits."`
DropCfIndex bool `long:"dropcfindex" description:"Deletes the index used for committed filtering (CF) support from the database on start up and then exits."`
DropTxIndex bool `long:"droptxindex" description:"Deletes the hash-based transaction index from the database on start up and then exits."`
DropTTLIndex bool `long:"dropttlindex" description:"Deletes the time to live index from the database on start up and then exits."`
DropUtreexoProofIndex bool `long:"droputreexoproofindex" description:"Deletes the utreexo proof index from the database on start up and then exits."`
DropFlatUtreexoProofIndex bool `long:"dropflatutreexoproofindex" description:"Deletes the flat utreexo proof index from the database on start up and then exits."`
// Wallet options.
WatchOnlyWallet bool `long:"watchonlywallet" description:"Enable the watch only wallet with utreexo proofs. Must have --noutreexo disabled"`
RegisterAddressToWatchOnlyWallet []string `long:"registeraddresstowatchonlywallet" description:"Registers addresses to be watched to the watch only wallet. Must have --watchonlywallet enabled"`
RegisterExtendedPubKeysToWatchOnlyWallet []string `long:"registerextendedpubkeystowatchonlywallet" description:"Registers extended pubkeys to be watched to the watch only wallet. Must have --watchonlywallet enabled."`
RegisterExtendedPubKeysWithAddrTypeToWatchOnlyWallet []string `long:"registerextendedpubkeyswithaddresstypetowatchonlywallet" description:"Registers extended pubkeys to be watched to the watch only wallet and let's the user override the hd type of the extended public key. Must have --watchonlywallet enabled. Format: '<extendedpubkey>:<address type>. Supported address types: '{p2pkh, p2wpkh, p2sh}'"`
NoBdkWallet bool `long:"nobdkwallet" description:"Disable the BDK wallet."`
// Electrum server options.
ElectrumListeners []string `long:"electrumlisteners" description:"Interface/port for the electrum server to listen to. (default 50001). Electrum server is only enabled when --watchonlywallet is enabled"`
TLSElectrumListeners []string `long:"tlselectrumlisteners" description:"Interface/port for the electrum server to listen to with tls. (default 50002). TLS electrum server is only enabled when --watchonlywallet is enabled"`
DisableElectrum bool `long:"disableelectrum" description:"Disable the electrum server while the --watchonlywallet flag is on"`
// Cooked options ready for use.
lookup func(string) ([]net.IP, error)
oniondial func(string, string, time.Duration) (net.Conn, error)
dial func(string, string, time.Duration) (net.Conn, error)
addCheckpoints []chaincfg.Checkpoint
miningAddrs []btcutil.Address
minRelayTxFee btcutil.Amount
whitelists []*net.IPNet
extendedPubkeys map[string]string
}
// serviceOptions defines the configuration options for the daemon as a service on
// Windows.
type serviceOptions struct {
ServiceCommand string `short:"s" long:"service" description:"Service command {install, remove, start, stop}"`
}
// cleanAndExpandPath expands environment variables and leading ~ in the
// passed path, cleans the result, and returns it.
func cleanAndExpandPath(path string) string {
// Expand initial ~ to OS specific home directory.
if strings.HasPrefix(path, "~") {
homeDir := filepath.Dir(defaultHomeDir)
path = strings.Replace(path, "~", homeDir, 1)
}
// NOTE: The os.ExpandEnv doesn't work with Windows-style %VARIABLE%,
// but they variables can still be expanded via POSIX-style $VARIABLE.
return filepath.Clean(os.ExpandEnv(path))
}
// validLogLevel returns whether or not logLevel is a valid debug log level.
func validLogLevel(logLevel string) bool {
switch logLevel {
case "trace":
fallthrough
case "debug":
fallthrough
case "info":
fallthrough
case "warn":
fallthrough
case "error":
fallthrough
case "critical":
return true
}
return false
}
// supportedSubsystems returns a sorted slice of the supported subsystems for
// logging purposes.
func supportedSubsystems() []string {
// Convert the subsystemLoggers map keys to a slice.
subsystems := make([]string, 0, len(subsystemLoggers))
for subsysID := range subsystemLoggers {
subsystems = append(subsystems, subsysID)
}
// Sort the subsystems for stable display.
sort.Strings(subsystems)
return subsystems
}
// parseAndSetDebugLevels attempts to parse the specified debug level and set
// the levels accordingly. An appropriate error is returned if anything is
// invalid.
func parseAndSetDebugLevels(debugLevel string) error {
// When the specified string doesn't have any delimters, treat it as
// the log level for all subsystems.
if !strings.Contains(debugLevel, ",") && !strings.Contains(debugLevel, "=") {
// Validate debug log level.
if !validLogLevel(debugLevel) {
str := "The specified debug level [%v] is invalid"
return fmt.Errorf(str, debugLevel)
}
// Change the logging level for all subsystems.
setLogLevels(debugLevel)
return nil
}
// Split the specified string into subsystem/level pairs while detecting
// issues and update the log levels accordingly.
for _, logLevelPair := range strings.Split(debugLevel, ",") {
if !strings.Contains(logLevelPair, "=") {
str := "The specified debug level contains an invalid " +
"subsystem/level pair [%v]"
return fmt.Errorf(str, logLevelPair)
}
// Extract the specified subsystem and log level.
fields := strings.Split(logLevelPair, "=")
subsysID, logLevel := fields[0], fields[1]
// Validate subsystem.
if _, exists := subsystemLoggers[subsysID]; !exists {
str := "The specified subsystem [%v] is invalid -- " +
"supported subsytems %v"
return fmt.Errorf(str, subsysID, supportedSubsystems())
}
// Validate log level.
if !validLogLevel(logLevel) {
str := "The specified debug level [%v] is invalid"
return fmt.Errorf(str, logLevel)
}
setLogLevel(subsysID, logLevel)
}
return nil
}
// validDbType returns whether or not dbType is a supported database type.
func validDbType(dbType string) bool {
for _, knownType := range knownDbTypes {
if dbType == knownType {
return true
}
}
return false
}
// removeDuplicateAddresses returns a new slice with all duplicate entries in
// addrs removed.
func removeDuplicateAddresses(addrs []string) []string {
result := make([]string, 0, len(addrs))
seen := map[string]struct{}{}
for _, val := range addrs {
if _, ok := seen[val]; !ok {
result = append(result, val)
seen[val] = struct{}{}
}
}
return result
}
// normalizeAddress returns addr with the passed default port appended if
// there is not already a port specified.
func normalizeAddress(addr, defaultPort string) string {
_, _, err := net.SplitHostPort(addr)
if err != nil {
return net.JoinHostPort(addr, defaultPort)
}
return addr
}
// normalizeAddresses returns a new slice with all the passed peer addresses
// normalized with the given default port, and all duplicates removed.
func normalizeAddresses(addrs []string, defaultPort string) []string {
for i, addr := range addrs {
addrs[i] = normalizeAddress(addr, defaultPort)
}
return removeDuplicateAddresses(addrs)
}
// newCheckpointFromStr parses checkpoints in the '<height>:<hash>' format.
func newCheckpointFromStr(checkpoint string) (chaincfg.Checkpoint, error) {
parts := strings.Split(checkpoint, ":")
if len(parts) != 2 {
return chaincfg.Checkpoint{}, fmt.Errorf("unable to parse "+
"checkpoint %q -- use the syntax <height>:<hash>",
checkpoint)
}
height, err := strconv.ParseInt(parts[0], 10, 32)
if err != nil {
return chaincfg.Checkpoint{}, fmt.Errorf("unable to parse "+
"checkpoint %q due to malformed height", checkpoint)
}
if len(parts[1]) == 0 {
return chaincfg.Checkpoint{}, fmt.Errorf("unable to parse "+
"checkpoint %q due to missing hash", checkpoint)
}
hash, err := chainhash.NewHashFromStr(parts[1])
if err != nil {
return chaincfg.Checkpoint{}, fmt.Errorf("unable to parse "+
"checkpoint %q due to malformed hash", checkpoint)
}
return chaincfg.Checkpoint{
Height: int32(height),
Hash: hash,
}, nil
}
// parseCheckpoints checks the checkpoint strings for valid syntax
// ('<height>:<hash>') and parses them to chaincfg.Checkpoint instances.
func parseCheckpoints(checkpointStrings []string) ([]chaincfg.Checkpoint, error) {
if len(checkpointStrings) == 0 {
return nil, nil
}
checkpoints := make([]chaincfg.Checkpoint, len(checkpointStrings))
for i, cpString := range checkpointStrings {
checkpoint, err := newCheckpointFromStr(cpString)
if err != nil {
return nil, err
}
checkpoints[i] = checkpoint
}
return checkpoints, nil
}
// filesExists reports whether the named file or directory exists.
func fileExists(name string) bool {
if _, err := os.Stat(name); err != nil {
if os.IsNotExist(err) {
return false
}
}
return true
}
// newConfigParser returns a new command line flags parser.
func newConfigParser(cfg *config, so *serviceOptions, options flags.Options) *flags.Parser {
parser := flags.NewParser(cfg, options)
if runtime.GOOS == "windows" {
parser.AddGroup("Service Options", "Service Options", so)
}
return parser
}
// loadConfig initializes and parses the config using a config file and command
// line options.
//
// The configuration proceeds as follows:
// 1. Start with a default config with sane settings
// 2. Pre-parse the command line to check for an alternative config file
// 3. Load configuration file overwriting defaults with any specified options
// 4. Parse CLI options and overwrite/add any specified options
//
// The above results in btcd functioning properly without any config settings
// while still allowing the user to override settings with config files and
// command line options. Command line options always take precedence.
func loadConfig() (*config, []string, error) {
// Default config.
cfg := config{
ConfigFile: defaultConfigFile,
DebugLevel: defaultLogLevel,
MaxPeers: defaultMaxPeers,
BanDuration: defaultBanDuration,
BanThreshold: defaultBanThreshold,
RPCMaxClients: defaultMaxRPCClients,
RPCMaxWebsockets: defaultMaxRPCWebsockets,
RPCMaxConcurrentReqs: defaultMaxRPCConcurrentReqs,
DataDir: defaultDataDir,
LogDir: defaultLogDir,
DbType: defaultDbType,
RPCKey: defaultRPCKeyFile,
RPCCert: defaultRPCCertFile,
MinRelayTxFee: mempool.DefaultMinRelayTxFee.ToBTC(),
FreeTxRelayLimit: defaultFreeTxRelayLimit,
TrickleInterval: defaultTrickleInterval,
BlockMinSize: defaultBlockMinSize,
BlockMaxSize: defaultBlockMaxSize,
BlockMinWeight: defaultBlockMinWeight,
BlockMaxWeight: defaultBlockMaxWeight,
BlockPrioritySize: mempool.DefaultBlockPrioritySize,
MaxOrphanTxs: defaultMaxOrphanTransactions,
SigCacheMaxSize: defaultSigCacheMaxSize,
UtxoCacheMaxSizeMiB: defaultUtxoCacheMaxSizeMiB,
UtreexoProofIndexMaxMemory: defaultUtxoCacheMaxSizeMiB * 2,
Generate: defaultGenerate,
TxIndex: defaultTxIndex,
TTLIndex: defaultTTLIndex,
AddrIndex: defaultAddrIndex,
Prune: pruneMinSize,
}
// Service options which are only added on Windows.
serviceOpts := serviceOptions{}
// Pre-parse the command line options to see if an alternative config
// file or the version flag was specified. Any errors aside from the
// help message error can be ignored here since they will be caught by
// the final parse below.
preCfg := cfg
preParser := newConfigParser(&preCfg, &serviceOpts, flags.HelpFlag)
_, err := preParser.Parse()
if err != nil {
if e, ok := err.(*flags.Error); ok && e.Type == flags.ErrHelp {
fmt.Fprintln(os.Stderr, err)
return nil, nil, err
}
}
// Show the version and exit if the version flag was specified.
appName := filepath.Base(os.Args[0])
appName = strings.TrimSuffix(appName, filepath.Ext(appName))
usageMessage := fmt.Sprintf("Use %s -h to show usage", appName)
if preCfg.ShowVersion {
fmt.Println(appName, "version", version())
os.Exit(0)
}
// Perform service command and exit if specified. Invalid service
// commands show an appropriate error. Only runs on Windows since
// the runServiceCommand function will be nil when not on Windows.
if serviceOpts.ServiceCommand != "" && runServiceCommand != nil {
err := runServiceCommand(serviceOpts.ServiceCommand)
if err != nil {
fmt.Fprintln(os.Stderr, err)
}
os.Exit(0)
}
// Load additional config from file.
var configFileError error
parser := newConfigParser(&cfg, &serviceOpts, flags.Default)
// Create default config file if it doesn't exist.
if _, err := os.Stat(preCfg.ConfigFile); os.IsNotExist(err) {
err := createDefaultConfigFile(preCfg.ConfigFile)
if err != nil {
fmt.Fprintf(os.Stderr, "Error creating a "+
"default config file: %v\n", err)
}
}
err = flags.NewIniParser(parser).ParseFile(preCfg.ConfigFile)
if err != nil {
if _, ok := err.(*os.PathError); !ok {
fmt.Fprintf(os.Stderr, "Error parsing config "+
"file: %v\n", err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
configFileError = err
}
// Don't add peers from the config file when in regression test mode.
if preCfg.RegressionTest && len(cfg.AddPeers) > 0 {
cfg.AddPeers = nil
}
// Parse command line options again to ensure they take precedence.
remainingArgs, err := parser.Parse()
if err != nil {
if e, ok := err.(*flags.Error); !ok || e.Type != flags.ErrHelp {
fmt.Fprintln(os.Stderr, usageMessage)
}
return nil, nil, err
}
// Create the home directory if it doesn't already exist.
funcName := "loadConfig"
err = os.MkdirAll(defaultHomeDir, 0700)
if err != nil {
// Show a nicer error message if it's because a symlink is
// linked to a directory that does not exist (probably because
// it's not mounted).
if e, ok := err.(*os.PathError); ok && os.IsExist(err) {
if link, lerr := os.Readlink(e.Path); lerr == nil {
str := "is symlink %s -> %s mounted?"
err = fmt.Errorf(str, e.Path, link)
}
}
str := "%s: Failed to create home directory: %v"
err := fmt.Errorf(str, funcName, err)
fmt.Fprintln(os.Stderr, err)
return nil, nil, err
}
// Multiple networks can't be selected simultaneously.
numNets := 0
// Count number of network flags passed; assign active network params
// while we're at it
if cfg.TestNet3 {
numNets++
activeNetParams = &testNet3Params
}
if cfg.RegressionTest {
numNets++
activeNetParams = ®ressionNetParams
}
if cfg.SimNet {
numNets++
// Also disable dns seeding on the simulation test network.
activeNetParams = &simNetParams
cfg.DisableDNSSeed = true
}
if cfg.SigNet {
numNets++
activeNetParams = &sigNetParams
// Let the user overwrite the default signet parameters. The
// challenge defines the actual signet network to join and the
// seed nodes are needed for network discovery.
sigNetChallenge := chaincfg.DefaultSignetChallenge
sigNetSeeds := chaincfg.DefaultSignetDNSSeeds
if cfg.SigNetChallenge != "" {
challenge, err := hex.DecodeString(cfg.SigNetChallenge)
if err != nil {
str := "%s: Invalid signet challenge, hex " +
"decode failed: %v"
err := fmt.Errorf(str, funcName, err)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
sigNetChallenge = challenge
}
if len(cfg.SigNetSeedNode) > 0 {
sigNetSeeds = make(
[]chaincfg.DNSSeed, len(cfg.SigNetSeedNode),
)
for idx, seed := range cfg.SigNetSeedNode {
sigNetSeeds[idx] = chaincfg.DNSSeed{
Host: seed,
HasFiltering: false,
}
}
}
chainParams := chaincfg.CustomSignetParams(
sigNetChallenge, sigNetSeeds,
)
activeNetParams.Params = &chainParams
}
if numNets > 1 {
str := "%s: The testnet, regtest, segnet, signet and simnet " +
"params can't be used together -- choose one of the " +
"five"
err := fmt.Errorf(str, funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// Set the default policy for relaying non-standard transactions
// according to the default of the active network. The set
// configuration value takes precedence over the default value for the
// selected network.
relayNonStd := activeNetParams.RelayNonStdTxs
switch {
case cfg.RelayNonStd && cfg.RejectNonStd:
str := "%s: rejectnonstd and relaynonstd cannot be used " +
"together -- choose only one"
err := fmt.Errorf(str, funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
case cfg.RejectNonStd:
relayNonStd = false
case cfg.RelayNonStd:
relayNonStd = true
}
cfg.RelayNonStd = relayNonStd
// Append the network type to the data directory so it is "namespaced"
// per network. In addition to the block database, there are other
// pieces of data that are saved to disk such as address manager state.
// All data is specific to a network, so namespacing the data directory
// means each individual piece of serialized data does not have to
// worry about changing names per network and such.
cfg.DataDir = cleanAndExpandPath(cfg.DataDir)
cfg.DataDir = filepath.Join(cfg.DataDir, netName(activeNetParams))
// Append the network type to the log directory so it is "namespaced"
// per network in the same fashion as the data directory.
cfg.LogDir = cleanAndExpandPath(cfg.LogDir)
cfg.LogDir = filepath.Join(cfg.LogDir, netName(activeNetParams))
// Special show command to list supported subsystems and exit.
if cfg.DebugLevel == "show" {
fmt.Println("Supported subsystems", supportedSubsystems())
os.Exit(0)
}
// Initialize log rotation. After log rotation has been initialized, the
// logger variables may be used.
initLogRotator(filepath.Join(cfg.LogDir, defaultLogFilename))
// Parse, validate, and set debug log level(s).
if err := parseAndSetDebugLevels(cfg.DebugLevel); err != nil {
err := fmt.Errorf("%s: %v", funcName, err.Error())
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// Validate database type.
if !validDbType(cfg.DbType) {
str := "%s: The specified database type [%v] is invalid -- " +
"supported types %v"
err := fmt.Errorf(str, funcName, cfg.DbType, knownDbTypes)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// Validate profile port number
if cfg.Profile != "" {
profilePort, err := strconv.Atoi(cfg.Profile)
if err != nil || profilePort < 1024 || profilePort > 65535 {
str := "%s: The profile port must be between 1024 and 65535"
err := fmt.Errorf(str, funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
}
// Don't allow ban durations that are too short.
if cfg.BanDuration < time.Second {
str := "%s: The banduration option may not be less than 1s -- parsed [%v]"
err := fmt.Errorf(str, funcName, cfg.BanDuration)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// Validate any given whitelisted IP addresses and networks.
if len(cfg.Whitelists) > 0 {
var ip net.IP
cfg.whitelists = make([]*net.IPNet, 0, len(cfg.Whitelists))
for _, addr := range cfg.Whitelists {
_, ipnet, err := net.ParseCIDR(addr)
if err != nil {
ip = net.ParseIP(addr)
if ip == nil {
str := "%s: The whitelist value of '%s' is invalid"
err = fmt.Errorf(str, funcName, addr)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
var bits int
if ip.To4() == nil {
// IPv6
bits = 128
} else {
bits = 32
}
ipnet = &net.IPNet{
IP: ip,
Mask: net.CIDRMask(bits, bits),
}
}
cfg.whitelists = append(cfg.whitelists, ipnet)
}
}
// --addPeer and --connect do not mix.
if len(cfg.AddPeers) > 0 && len(cfg.ConnectPeers) > 0 {
str := "%s: the --addpeer and --connect options can not be " +
"mixed"
err := fmt.Errorf(str, funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// --proxy or --connect without --listen disables listening.
if (cfg.Proxy != "" || len(cfg.ConnectPeers) > 0) &&
len(cfg.Listeners) == 0 {
cfg.DisableListen = true
}
// Connect means no DNS seeding.
if len(cfg.ConnectPeers) > 0 {
cfg.DisableDNSSeed = true
}
// Add the default listener if none were specified. The default
// listener is all addresses on the listen port for the network
// we are to connect to.
if len(cfg.Listeners) == 0 {
cfg.Listeners = []string{
net.JoinHostPort("", activeNetParams.DefaultPort),
}
}
// Check to make sure limited and admin users don't have the same username
if cfg.RPCUser == cfg.RPCLimitUser && cfg.RPCUser != "" {
str := "%s: --rpcuser and --rpclimituser must not specify the " +
"same username"
err := fmt.Errorf(str, funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// Check to make sure limited and admin users don't have the same password
if cfg.RPCPass == cfg.RPCLimitPass && cfg.RPCPass != "" {
str := "%s: --rpcpass and --rpclimitpass must not specify the " +
"same password"
err := fmt.Errorf(str, funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
if cfg.DisableRPC {
btcdLog.Infof("RPC service is disabled")
}
// Default RPC to listen on localhost only.
if !cfg.DisableRPC && len(cfg.RPCListeners) == 0 {
addrs, err := net.LookupHost("localhost")
if err != nil {
return nil, nil, err
}
cfg.RPCListeners = make([]string, 0, len(addrs))
for _, addr := range addrs {
addr = net.JoinHostPort(addr, activeNetParams.rpcPort)
cfg.RPCListeners = append(cfg.RPCListeners, addr)
}
}
if cfg.RPCMaxConcurrentReqs < 0 {
str := "%s: The rpcmaxwebsocketconcurrentrequests option may " +
"not be less than 0 -- parsed [%d]"
err := fmt.Errorf(str, funcName, cfg.RPCMaxConcurrentReqs)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// Validate the the minrelaytxfee.
cfg.minRelayTxFee, err = btcutil.NewAmount(cfg.MinRelayTxFee)
if err != nil {
str := "%s: invalid minrelaytxfee: %v"
err := fmt.Errorf(str, funcName, err)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// Limit the max block size to a sane value.
if cfg.BlockMaxSize < blockMaxSizeMin || cfg.BlockMaxSize >
blockMaxSizeMax {
str := "%s: The blockmaxsize option must be in between %d " +
"and %d -- parsed [%d]"
err := fmt.Errorf(str, funcName, blockMaxSizeMin,
blockMaxSizeMax, cfg.BlockMaxSize)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// Limit the max block weight to a sane value.
if cfg.BlockMaxWeight < blockMaxWeightMin ||
cfg.BlockMaxWeight > blockMaxWeightMax {
str := "%s: The blockmaxweight option must be in between %d " +
"and %d -- parsed [%d]"
err := fmt.Errorf(str, funcName, blockMaxWeightMin,
blockMaxWeightMax, cfg.BlockMaxWeight)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// Limit the max orphan count to a sane vlue.
if cfg.MaxOrphanTxs < 0 {
str := "%s: The maxorphantx option may not be less than 0 " +
"-- parsed [%d]"
err := fmt.Errorf(str, funcName, cfg.MaxOrphanTxs)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// Limit the block priority and minimum block sizes to max block size.
cfg.BlockPrioritySize = minUint32(cfg.BlockPrioritySize, cfg.BlockMaxSize)
cfg.BlockMinSize = minUint32(cfg.BlockMinSize, cfg.BlockMaxSize)
cfg.BlockMinWeight = minUint32(cfg.BlockMinWeight, cfg.BlockMaxWeight)
switch {
// If the max block size isn't set, but the max weight is, then we'll
// set the limit for the max block size to a safe limit so weight takes
// precedence.
case cfg.BlockMaxSize == defaultBlockMaxSize &&
cfg.BlockMaxWeight != defaultBlockMaxWeight:
cfg.BlockMaxSize = blockchain.MaxBlockBaseSize - 1000
// If the max block weight isn't set, but the block size is, then we'll
// scale the set weight accordingly based on the max block size value.
case cfg.BlockMaxSize != defaultBlockMaxSize &&
cfg.BlockMaxWeight == defaultBlockMaxWeight:
cfg.BlockMaxWeight = cfg.BlockMaxSize * blockchain.WitnessScaleFactor
}
// Look for illegal characters in the user agent comments.
for _, uaComment := range cfg.UserAgentComments {
if strings.ContainsAny(uaComment, "/:()") {
err := fmt.Errorf("%s: The following characters must not "+
"appear in user agent comments: '/', ':', '(', ')'",
funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
}
// --txindex and --droptxindex do not mix.
if cfg.TxIndex && cfg.DropTxIndex {
err := fmt.Errorf("%s: the --txindex and --droptxindex "+
"options may not be activated at the same time",
funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// --addrindex and --dropaddrindex do not mix.
if cfg.AddrIndex && cfg.DropAddrIndex {
err := fmt.Errorf("%s: the --addrindex and --dropaddrindex "+
"options may not be activated at the same time",
funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// --addrindex and --droptxindex do not mix.
if cfg.AddrIndex && cfg.DropTxIndex {
err := fmt.Errorf("%s: the --addrindex and --droptxindex "+
"options may not be activated at the same time "+
"because the address index relies on the transaction "+
"index",
funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// --ttlindex and --dropttlindex do not mix.
if cfg.TTLIndex && cfg.DropTTLIndex {
err := fmt.Errorf("%s: the --ttlindex and --dropttlindex "+
"options may not be activated at the same time ",
funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// --utreexoproofindex and --droputreexoproofindex do not mix.
if cfg.UtreexoProofIndex && cfg.DropUtreexoProofIndex {
err := fmt.Errorf("%s: the --utreexoproofindex and --droputreexoproofindex"+
"options may not be activated at the same time ",
funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
// --flatutreexoproofindex and --dropflatutreexoproofindex do not mix.
if cfg.FlatUtreexoProofIndex && cfg.DropFlatUtreexoProofIndex {
err := fmt.Errorf("%s: the --flatutreexoproofindex and --dropflatutreexoproofindex"+
"options may not be activated at the same time ",
funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)
return nil, nil, err
}
if cfg.UtreexoProofIndexMaxMemory < 250 {
err := fmt.Errorf("%s: the --utreexoproofindexmaxmemory "+
"option may not be less than 250",
funcName)
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr, usageMessage)