-
Notifications
You must be signed in to change notification settings - Fork 0
/
accounts.go
1383 lines (1201 loc) · 40.7 KB
/
accounts.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) 2016-2017 Daniel Oaks <daniel@danieloaks.net>
// released under the MIT license
package irc
import (
"encoding/json"
"fmt"
"net/smtp"
"strconv"
"strings"
"sync"
"sync/atomic"
"time"
"unicode"
"github.com/oragono/oragono/irc/caps"
"github.com/oragono/oragono/irc/passwd"
"github.com/oragono/oragono/irc/utils"
"github.com/tidwall/buntdb"
)
const (
keyAccountExists = "account.exists %s"
keyAccountVerified = "account.verified %s"
keyAccountCallback = "account.callback %s"
keyAccountVerificationCode = "account.verificationcode %s"
keyAccountName = "account.name %s" // stores the 'preferred name' of the account, not casemapped
keyAccountRegTime = "account.registered.time %s"
keyAccountCredentials = "account.credentials %s"
keyAccountAdditionalNicks = "account.additionalnicks %s"
keyAccountSettings = "account.settings %s"
keyAccountVHost = "account.vhost %s"
keyCertToAccount = "account.creds.certfp %s"
keyAccountChannels = "account.channels %s"
keyVHostQueueAcctToId = "vhostQueue %s"
vhostRequestIdx = "vhostQueue"
)
// everything about accounts is persistent; therefore, the database is the authoritative
// source of truth for all account information. anything on the heap is just a cache
type AccountManager struct {
// XXX these are up here so they can be aligned to a 64-bit boundary, please forgive me
// autoincrementing ID for vhost requests:
vhostRequestID uint64
vhostRequestPendingCount uint64
sync.RWMutex // tier 2
serialCacheUpdateMutex sync.Mutex // tier 3
vHostUpdateMutex sync.Mutex // tier 3
server *Server
// track clients logged in to accounts
accountToClients map[string][]*Client
nickToAccount map[string]string
skeletonToAccount map[string]string
accountToMethod map[string]NickEnforcementMethod
}
func (am *AccountManager) Initialize(server *Server) {
am.accountToClients = make(map[string][]*Client)
am.nickToAccount = make(map[string]string)
am.skeletonToAccount = make(map[string]string)
am.accountToMethod = make(map[string]NickEnforcementMethod)
am.server = server
am.buildNickToAccountIndex()
am.initVHostRequestQueue()
}
func (am *AccountManager) buildNickToAccountIndex() {
if !am.server.AccountConfig().NickReservation.Enabled {
return
}
nickToAccount := make(map[string]string)
skeletonToAccount := make(map[string]string)
accountToMethod := make(map[string]NickEnforcementMethod)
existsPrefix := fmt.Sprintf(keyAccountExists, "")
am.serialCacheUpdateMutex.Lock()
defer am.serialCacheUpdateMutex.Unlock()
err := am.server.store.View(func(tx *buntdb.Tx) error {
err := tx.AscendGreaterOrEqual("", existsPrefix, func(key, value string) bool {
if !strings.HasPrefix(key, existsPrefix) {
return false
}
account := strings.TrimPrefix(key, existsPrefix)
if _, err := tx.Get(fmt.Sprintf(keyAccountVerified, account)); err == nil {
nickToAccount[account] = account
accountName, err := tx.Get(fmt.Sprintf(keyAccountName, account))
if err != nil {
am.server.logger.Error("internal", "missing account name for", account)
} else {
skeleton, _ := Skeleton(accountName)
skeletonToAccount[skeleton] = account
}
}
if rawNicks, err := tx.Get(fmt.Sprintf(keyAccountAdditionalNicks, account)); err == nil {
additionalNicks := unmarshalReservedNicks(rawNicks)
for _, nick := range additionalNicks {
cfnick, _ := CasefoldName(nick)
nickToAccount[cfnick] = account
skeleton, _ := Skeleton(nick)
skeletonToAccount[skeleton] = account
}
}
if rawPrefs, err := tx.Get(fmt.Sprintf(keyAccountSettings, account)); err == nil {
var prefs AccountSettings
err := json.Unmarshal([]byte(rawPrefs), &prefs)
if err == nil && prefs.NickEnforcement != NickEnforcementOptional {
accountToMethod[account] = prefs.NickEnforcement
} else if err != nil {
am.server.logger.Error("internal", "corrupt account creds", account)
}
}
return true
})
return err
})
if err != nil {
am.server.logger.Error("internal", "couldn't read reserved nicks", err.Error())
} else {
am.Lock()
am.nickToAccount = nickToAccount
am.skeletonToAccount = skeletonToAccount
am.accountToMethod = accountToMethod
am.Unlock()
}
}
func (am *AccountManager) initVHostRequestQueue() {
if !am.server.AccountConfig().VHosts.Enabled {
return
}
am.vHostUpdateMutex.Lock()
defer am.vHostUpdateMutex.Unlock()
// the db maps the account name to the autoincrementing integer ID of its request
// create an numerically ordered index on ID, so we can list the oldest requests
// finally, collect the integer id of the newest request and the total request count
var total uint64
var lastIDStr string
err := am.server.store.Update(func(tx *buntdb.Tx) error {
err := tx.CreateIndex(vhostRequestIdx, fmt.Sprintf(keyVHostQueueAcctToId, "*"), buntdb.IndexInt)
if err != nil {
return err
}
return tx.Descend(vhostRequestIdx, func(key, value string) bool {
if lastIDStr == "" {
lastIDStr = value
}
total++
return true
})
})
if err != nil {
am.server.logger.Error("internal", "could not create vhost queue index", err.Error())
}
lastID, _ := strconv.ParseUint(lastIDStr, 10, 64)
am.server.logger.Debug("services", fmt.Sprintf("vhost queue length is %d, autoincrementing id is %d", total, lastID))
atomic.StoreUint64(&am.vhostRequestID, lastID)
atomic.StoreUint64(&am.vhostRequestPendingCount, total)
}
func (am *AccountManager) NickToAccount(nick string) string {
cfnick, err := CasefoldName(nick)
if err != nil {
return ""
}
am.RLock()
defer am.RUnlock()
return am.nickToAccount[cfnick]
}
// given an account, combine stored enforcement method with the config settings
// to compute the actual enforcement method
func configuredEnforcementMethod(config *Config, storedMethod NickEnforcementMethod) (result NickEnforcementMethod) {
if !config.Accounts.NickReservation.Enabled {
return NickEnforcementNone
}
result = storedMethod
// if they don't have a custom setting, or customization is disabled, use the default
if result == NickEnforcementOptional || !config.Accounts.NickReservation.AllowCustomEnforcement {
result = config.Accounts.NickReservation.Method
}
if result == NickEnforcementOptional {
// enforcement was explicitly enabled neither in the config or by the user
result = NickEnforcementNone
}
return
}
// Given a nick, looks up the account that owns it and the method (none/timeout/strict)
// used to enforce ownership.
func (am *AccountManager) EnforcementStatus(cfnick, skeleton string) (account string, method NickEnforcementMethod) {
config := am.server.Config()
if !config.Accounts.NickReservation.Enabled {
return "", NickEnforcementNone
}
am.RLock()
defer am.RUnlock()
finalEnforcementMethod := func(account_ string) (result NickEnforcementMethod) {
storedMethod := am.accountToMethod[account_]
return configuredEnforcementMethod(config, storedMethod)
}
nickAccount := am.nickToAccount[cfnick]
skelAccount := am.skeletonToAccount[skeleton]
if nickAccount == "" && skelAccount == "" {
return "", NickEnforcementNone
} else if nickAccount != "" && (skelAccount == nickAccount || skelAccount == "") {
return nickAccount, finalEnforcementMethod(nickAccount)
} else if skelAccount != "" && nickAccount == "" {
return skelAccount, finalEnforcementMethod(skelAccount)
} else {
// nickAccount != skelAccount and both are nonempty:
// two people have competing claims on (this casefolding of) this nick!
nickMethod := finalEnforcementMethod(nickAccount)
skelMethod := finalEnforcementMethod(skelAccount)
switch {
case skelMethod == NickEnforcementNone:
return nickAccount, nickMethod
case nickMethod == NickEnforcementNone:
return skelAccount, skelMethod
default:
// nobody can use this nick
return "!", NickEnforcementStrict
}
}
}
// Sets a custom enforcement method for an account and stores it in the database.
func (am *AccountManager) SetEnforcementStatus(account string, method NickEnforcementMethod) (finalSettings AccountSettings, err error) {
config := am.server.Config()
if !(config.Accounts.NickReservation.Enabled && config.Accounts.NickReservation.AllowCustomEnforcement) {
err = errFeatureDisabled
return
}
setter := func(in AccountSettings) (out AccountSettings, err error) {
out = in
out.NickEnforcement = method
return out, nil
}
_, err = am.ModifyAccountSettings(account, setter)
if err != nil {
return
}
// this update of the data plane is racey, but it's probably fine
am.Lock()
defer am.Unlock()
if method == NickEnforcementOptional {
delete(am.accountToMethod, account)
} else {
am.accountToMethod[account] = method
}
return
}
func (am *AccountManager) AccountToClients(account string) (result []*Client) {
cfaccount, err := CasefoldName(account)
if err != nil {
return
}
am.RLock()
defer am.RUnlock()
return am.accountToClients[cfaccount]
}
func (am *AccountManager) Register(client *Client, account string, callbackNamespace string, callbackValue string, passphrase string, certfp string) error {
casefoldedAccount, err := CasefoldName(account)
skeleton, skerr := Skeleton(account)
if err != nil || skerr != nil || account == "" || account == "*" {
return errAccountCreation
}
if restrictedCasefoldedNicks[casefoldedAccount] || restrictedSkeletons[skeleton] {
return errAccountAlreadyRegistered
}
config := am.server.AccountConfig()
// final "is registration allowed" check, probably redundant:
if !(config.Registration.Enabled || callbackNamespace == "admin") {
return errFeatureDisabled
}
// if nick reservation is enabled, you can only register your current nickname
// as an account; this prevents "land-grab" situations where someone else
// registers your nick out from under you and then NS GHOSTs you
// n.b. client is nil during a SAREGISTER:
if config.NickReservation.Enabled && client != nil && client.NickCasefolded() != casefoldedAccount {
return errAccountMustHoldNick
}
// can't register a guest nickname
renamePrefix := strings.ToLower(config.NickReservation.RenamePrefix)
if renamePrefix != "" && strings.HasPrefix(casefoldedAccount, renamePrefix) {
return errAccountAlreadyRegistered
}
accountKey := fmt.Sprintf(keyAccountExists, casefoldedAccount)
accountNameKey := fmt.Sprintf(keyAccountName, casefoldedAccount)
callbackKey := fmt.Sprintf(keyAccountCallback, casefoldedAccount)
registeredTimeKey := fmt.Sprintf(keyAccountRegTime, casefoldedAccount)
credentialsKey := fmt.Sprintf(keyAccountCredentials, casefoldedAccount)
verificationCodeKey := fmt.Sprintf(keyAccountVerificationCode, casefoldedAccount)
certFPKey := fmt.Sprintf(keyCertToAccount, certfp)
credStr, err := am.serializeCredentials(passphrase, certfp)
if err != nil {
return err
}
registeredTimeStr := strconv.FormatInt(time.Now().Unix(), 10)
callbackSpec := fmt.Sprintf("%s:%s", callbackNamespace, callbackValue)
var setOptions *buntdb.SetOptions
ttl := config.Registration.VerifyTimeout
if ttl != 0 {
setOptions = &buntdb.SetOptions{Expires: true, TTL: ttl}
}
err = func() error {
am.serialCacheUpdateMutex.Lock()
defer am.serialCacheUpdateMutex.Unlock()
// can't register an account with the same name as a registered nick
if am.NickToAccount(casefoldedAccount) != "" {
return errAccountAlreadyRegistered
}
return am.server.store.Update(func(tx *buntdb.Tx) error {
_, err := am.loadRawAccount(tx, casefoldedAccount)
if err != errAccountDoesNotExist {
return errAccountAlreadyRegistered
}
if certfp != "" {
// make sure certfp doesn't already exist because that'd be silly
_, err := tx.Get(certFPKey)
if err != buntdb.ErrNotFound {
return errCertfpAlreadyExists
}
}
tx.Set(accountKey, "1", setOptions)
tx.Set(accountNameKey, account, setOptions)
tx.Set(registeredTimeKey, registeredTimeStr, setOptions)
tx.Set(credentialsKey, credStr, setOptions)
tx.Set(callbackKey, callbackSpec, setOptions)
if certfp != "" {
tx.Set(certFPKey, casefoldedAccount, setOptions)
}
return nil
})
}()
if err != nil {
return err
}
code, err := am.dispatchCallback(client, casefoldedAccount, callbackNamespace, callbackValue)
if err != nil {
am.Unregister(casefoldedAccount)
return errCallbackFailed
} else {
return am.server.store.Update(func(tx *buntdb.Tx) error {
_, _, err = tx.Set(verificationCodeKey, code, setOptions)
return err
})
}
}
// validatePassphrase checks whether a passphrase is allowed by our rules
func validatePassphrase(passphrase string) error {
// sanity check the length
if len(passphrase) == 0 || len(passphrase) > 600 {
return errAccountBadPassphrase
}
// we use * as a placeholder in some places, if it's gotten this far then fail
if passphrase == "*" {
return errAccountBadPassphrase
}
// for now, just enforce that spaces are not allowed
for _, r := range passphrase {
if unicode.IsSpace(r) {
return errAccountBadPassphrase
}
}
return nil
}
// helper to assemble the serialized JSON for an account's credentials
func (am *AccountManager) serializeCredentials(passphrase string, certfp string) (result string, err error) {
var creds AccountCredentials
creds.Version = 1
// we need at least one of passphrase and certfp:
if passphrase == "" && certfp == "" {
return "", errAccountBadPassphrase
}
// but if we have one, it's fine if the other is missing, it just means no
// credential of that type will be accepted.
creds.Certificate = certfp
if passphrase != "" {
if validatePassphrase(passphrase) != nil {
return "", errAccountBadPassphrase
}
bcryptCost := int(am.server.Config().Accounts.Registration.BcryptCost)
creds.PassphraseHash, err = passwd.GenerateFromPassword([]byte(passphrase), bcryptCost)
if err != nil {
am.server.logger.Error("internal", "could not hash password", err.Error())
return "", errAccountCreation
}
}
credText, err := json.Marshal(creds)
if err != nil {
am.server.logger.Error("internal", "could not marshal credentials", err.Error())
return "", errAccountCreation
}
return string(credText), nil
}
// changes the password for an account
func (am *AccountManager) setPassword(account string, password string) (err error) {
casefoldedAccount, err := CasefoldName(account)
if err != nil {
return err
}
act, err := am.LoadAccount(casefoldedAccount)
if err != nil {
return err
}
credStr, err := am.serializeCredentials(password, act.Credentials.Certificate)
if err != nil {
return err
}
credentialsKey := fmt.Sprintf(keyAccountCredentials, casefoldedAccount)
return am.server.store.Update(func(tx *buntdb.Tx) error {
_, _, err := tx.Set(credentialsKey, credStr, nil)
return err
})
}
func (am *AccountManager) dispatchCallback(client *Client, casefoldedAccount string, callbackNamespace string, callbackValue string) (string, error) {
if callbackNamespace == "*" || callbackNamespace == "none" || callbackNamespace == "admin" {
return "", nil
} else if callbackNamespace == "mailto" {
return am.dispatchMailtoCallback(client, casefoldedAccount, callbackValue)
} else {
return "", fmt.Errorf("Callback not implemented: %s", callbackNamespace)
}
}
func (am *AccountManager) dispatchMailtoCallback(client *Client, casefoldedAccount string, callbackValue string) (code string, err error) {
config := am.server.AccountConfig().Registration.Callbacks.Mailto
code = utils.GenerateSecretToken()
subject := config.VerifyMessageSubject
if subject == "" {
subject = fmt.Sprintf(client.t("Verify your account on %s"), am.server.name)
}
messageStrings := []string{
fmt.Sprintf("From: %s\r\n", config.Sender),
fmt.Sprintf("To: %s\r\n", callbackValue),
fmt.Sprintf("Subject: %s\r\n", subject),
"\r\n", // end headers, begin message body
fmt.Sprintf(client.t("Account: %s"), casefoldedAccount) + "\r\n",
fmt.Sprintf(client.t("Verification code: %s"), code) + "\r\n",
"\r\n",
client.t("To verify your account, issue one of these commands:") + "\r\n",
fmt.Sprintf("/MSG NickServ VERIFY %s %s", casefoldedAccount, code) + "\r\n",
}
var message []byte
for i := 0; i < len(messageStrings); i++ {
message = append(message, []byte(messageStrings[i])...)
}
addr := fmt.Sprintf("%s:%d", config.Server, config.Port)
var auth smtp.Auth
if config.Username != "" && config.Password != "" {
auth = smtp.PlainAuth("", config.Username, config.Password, config.Server)
}
// TODO: this will never send the password in plaintext over a nonlocal link,
// but it might send the email in plaintext, regardless of the value of
// config.TLS.InsecureSkipVerify
err = smtp.SendMail(addr, auth, config.Sender, []string{callbackValue}, message)
if err != nil {
am.server.logger.Error("internal", "Failed to dispatch e-mail", err.Error())
}
return
}
func (am *AccountManager) Verify(client *Client, account string, code string) error {
casefoldedAccount, err := CasefoldName(account)
if err != nil || account == "" || account == "*" {
return errAccountVerificationFailed
}
verifiedKey := fmt.Sprintf(keyAccountVerified, casefoldedAccount)
accountKey := fmt.Sprintf(keyAccountExists, casefoldedAccount)
accountNameKey := fmt.Sprintf(keyAccountName, casefoldedAccount)
registeredTimeKey := fmt.Sprintf(keyAccountRegTime, casefoldedAccount)
verificationCodeKey := fmt.Sprintf(keyAccountVerificationCode, casefoldedAccount)
callbackKey := fmt.Sprintf(keyAccountCallback, casefoldedAccount)
credentialsKey := fmt.Sprintf(keyAccountCredentials, casefoldedAccount)
var raw rawClientAccount
func() {
am.serialCacheUpdateMutex.Lock()
defer am.serialCacheUpdateMutex.Unlock()
err = am.server.store.Update(func(tx *buntdb.Tx) error {
raw, err = am.loadRawAccount(tx, casefoldedAccount)
if err == errAccountDoesNotExist {
return errAccountDoesNotExist
} else if err != nil {
return errAccountVerificationFailed
} else if raw.Verified {
return errAccountAlreadyVerified
}
// actually verify the code
// a stored code of "" means a none callback / no code required
success := false
storedCode, err := tx.Get(verificationCodeKey)
if err == nil {
// this is probably unnecessary
if storedCode == "" || utils.SecretTokensMatch(storedCode, code) {
success = true
}
}
if !success {
return errAccountVerificationInvalidCode
}
// verify the account
tx.Set(verifiedKey, "1", nil)
// don't need the code anymore
tx.Delete(verificationCodeKey)
// re-set all other keys, removing the TTL
tx.Set(accountKey, "1", nil)
tx.Set(accountNameKey, raw.Name, nil)
tx.Set(registeredTimeKey, raw.RegisteredAt, nil)
tx.Set(callbackKey, raw.Callback, nil)
tx.Set(credentialsKey, raw.Credentials, nil)
var creds AccountCredentials
// XXX we shouldn't do (de)serialization inside the txn,
// but this is like 2 usec on my system
json.Unmarshal([]byte(raw.Credentials), &creds)
if creds.Certificate != "" {
certFPKey := fmt.Sprintf(keyCertToAccount, creds.Certificate)
tx.Set(certFPKey, casefoldedAccount, nil)
}
return nil
})
if err == nil {
skeleton, _ := Skeleton(raw.Name)
am.Lock()
am.nickToAccount[casefoldedAccount] = casefoldedAccount
am.skeletonToAccount[skeleton] = casefoldedAccount
am.Unlock()
}
}()
if err != nil {
return err
}
nick := "[server admin]"
if client != nil {
nick = client.Nick()
}
am.server.logger.Info("accounts", "client", nick, "registered account", casefoldedAccount)
raw.Verified = true
clientAccount, err := am.deserializeRawAccount(raw)
if err != nil {
return err
}
if client != nil {
am.Login(client, clientAccount)
}
return nil
}
func marshalReservedNicks(nicks []string) string {
return strings.Join(nicks, ",")
}
func unmarshalReservedNicks(nicks string) (result []string) {
if nicks == "" {
return
}
return strings.Split(nicks, ",")
}
func (am *AccountManager) SetNickReserved(client *Client, nick string, saUnreserve bool, reserve bool) error {
cfnick, err := CasefoldName(nick)
skeleton, skerr := Skeleton(nick)
// garbage nick, or garbage options, or disabled
nrconfig := am.server.AccountConfig().NickReservation
if err != nil || skerr != nil || cfnick == "" || (reserve && saUnreserve) || !nrconfig.Enabled {
return errAccountNickReservationFailed
}
// the cache is in sync with the DB while we hold serialCacheUpdateMutex
am.serialCacheUpdateMutex.Lock()
defer am.serialCacheUpdateMutex.Unlock()
// find the affected account, which is usually the client's:
account := client.Account()
if saUnreserve {
// unless this is a sadrop:
account = am.NickToAccount(cfnick)
if account == "" {
// nothing to do
return nil
}
}
if account == "" {
return errAccountNotLoggedIn
}
am.Lock()
accountForNick := am.nickToAccount[cfnick]
var accountForSkeleton string
if reserve {
accountForSkeleton = am.skeletonToAccount[skeleton]
}
am.Unlock()
if reserve && (accountForNick != "" || accountForSkeleton != "") {
return errNicknameReserved
} else if !reserve && !saUnreserve && accountForNick != account {
return errNicknameReserved
} else if !reserve && cfnick == account {
return errAccountCantDropPrimaryNick
}
nicksKey := fmt.Sprintf(keyAccountAdditionalNicks, account)
unverifiedAccountKey := fmt.Sprintf(keyAccountExists, cfnick)
err = am.server.store.Update(func(tx *buntdb.Tx) error {
if reserve {
// unverified accounts don't show up in NickToAccount yet (which is intentional),
// however you shouldn't be able to reserve a nick out from under them
_, err := tx.Get(unverifiedAccountKey)
if err == nil {
return errNicknameReserved
}
}
rawNicks, err := tx.Get(nicksKey)
if err != nil && err != buntdb.ErrNotFound {
return err
}
nicks := unmarshalReservedNicks(rawNicks)
if reserve {
if len(nicks) >= nrconfig.AdditionalNickLimit {
return errAccountTooManyNicks
}
nicks = append(nicks, nick)
} else {
// compute (original reserved nicks) minus cfnick
var newNicks []string
for _, reservedNick := range nicks {
cfreservednick, _ := CasefoldName(reservedNick)
if cfreservednick != cfnick {
newNicks = append(newNicks, reservedNick)
} else {
// found the original, unfolded version of the nick we're dropping;
// recompute the true skeleton from it
skeleton, _ = Skeleton(reservedNick)
}
}
nicks = newNicks
}
marshaledNicks := marshalReservedNicks(nicks)
_, _, err = tx.Set(nicksKey, string(marshaledNicks), nil)
return err
})
if err == errAccountTooManyNicks || err == errNicknameReserved {
return err
} else if err != nil {
return errAccountNickReservationFailed
}
// success
am.Lock()
defer am.Unlock()
if reserve {
am.nickToAccount[cfnick] = account
am.skeletonToAccount[skeleton] = account
} else {
delete(am.nickToAccount, cfnick)
delete(am.skeletonToAccount, skeleton)
}
return nil
}
func (am *AccountManager) checkPassphrase(accountName, passphrase string) (account ClientAccount, err error) {
account, err = am.LoadAccount(accountName)
if err != nil {
return
}
if !account.Verified {
err = errAccountUnverified
return
}
switch account.Credentials.Version {
case 0:
err = handleLegacyPasswordV0(am.server, accountName, account.Credentials, passphrase)
case 1:
if passwd.CompareHashAndPassword(account.Credentials.PassphraseHash, []byte(passphrase)) != nil {
err = errAccountInvalidCredentials
}
default:
err = errAccountInvalidCredentials
}
return
}
func (am *AccountManager) AuthenticateByPassphrase(client *Client, accountName string, passphrase string) error {
account, err := am.checkPassphrase(accountName, passphrase)
if err != nil {
return err
}
am.Login(client, account)
return nil
}
func (am *AccountManager) LoadAccount(accountName string) (result ClientAccount, err error) {
casefoldedAccount, err := CasefoldName(accountName)
if err != nil {
err = errAccountDoesNotExist
return
}
var raw rawClientAccount
am.server.store.View(func(tx *buntdb.Tx) error {
raw, err = am.loadRawAccount(tx, casefoldedAccount)
return nil
})
if err != nil {
return
}
result, err = am.deserializeRawAccount(raw)
return
}
func (am *AccountManager) deserializeRawAccount(raw rawClientAccount) (result ClientAccount, err error) {
result.Name = raw.Name
regTimeInt, _ := strconv.ParseInt(raw.RegisteredAt, 10, 64)
result.RegisteredAt = time.Unix(regTimeInt, 0)
e := json.Unmarshal([]byte(raw.Credentials), &result.Credentials)
if e != nil {
am.server.logger.Error("internal", "could not unmarshal credentials", e.Error())
err = errAccountDoesNotExist
return
}
result.AdditionalNicks = unmarshalReservedNicks(raw.AdditionalNicks)
result.Verified = raw.Verified
if raw.VHost != "" {
e := json.Unmarshal([]byte(raw.VHost), &result.VHost)
if e != nil {
am.server.logger.Warning("internal", "could not unmarshal vhost for account", result.Name, e.Error())
// pretend they have no vhost and move on
}
}
if raw.Settings != "" {
e := json.Unmarshal([]byte(raw.Settings), &result.Settings)
if e != nil {
am.server.logger.Warning("internal", "could not unmarshal settings for account", result.Name, e.Error())
}
}
return
}
func (am *AccountManager) loadRawAccount(tx *buntdb.Tx, casefoldedAccount string) (result rawClientAccount, err error) {
accountKey := fmt.Sprintf(keyAccountExists, casefoldedAccount)
accountNameKey := fmt.Sprintf(keyAccountName, casefoldedAccount)
registeredTimeKey := fmt.Sprintf(keyAccountRegTime, casefoldedAccount)
credentialsKey := fmt.Sprintf(keyAccountCredentials, casefoldedAccount)
verifiedKey := fmt.Sprintf(keyAccountVerified, casefoldedAccount)
callbackKey := fmt.Sprintf(keyAccountCallback, casefoldedAccount)
nicksKey := fmt.Sprintf(keyAccountAdditionalNicks, casefoldedAccount)
vhostKey := fmt.Sprintf(keyAccountVHost, casefoldedAccount)
settingsKey := fmt.Sprintf(keyAccountSettings, casefoldedAccount)
_, e := tx.Get(accountKey)
if e == buntdb.ErrNotFound {
err = errAccountDoesNotExist
return
}
result.Name, _ = tx.Get(accountNameKey)
result.RegisteredAt, _ = tx.Get(registeredTimeKey)
result.Credentials, _ = tx.Get(credentialsKey)
result.Callback, _ = tx.Get(callbackKey)
result.AdditionalNicks, _ = tx.Get(nicksKey)
result.VHost, _ = tx.Get(vhostKey)
result.Settings, _ = tx.Get(settingsKey)
if _, e = tx.Get(verifiedKey); e == nil {
result.Verified = true
}
return
}
func (am *AccountManager) Unregister(account string) error {
config := am.server.Config()
casefoldedAccount, err := CasefoldName(account)
if err != nil {
return errAccountDoesNotExist
}
accountKey := fmt.Sprintf(keyAccountExists, casefoldedAccount)
accountNameKey := fmt.Sprintf(keyAccountName, casefoldedAccount)
registeredTimeKey := fmt.Sprintf(keyAccountRegTime, casefoldedAccount)
credentialsKey := fmt.Sprintf(keyAccountCredentials, casefoldedAccount)
callbackKey := fmt.Sprintf(keyAccountCallback, casefoldedAccount)
verificationCodeKey := fmt.Sprintf(keyAccountVerificationCode, casefoldedAccount)
verifiedKey := fmt.Sprintf(keyAccountVerified, casefoldedAccount)
nicksKey := fmt.Sprintf(keyAccountAdditionalNicks, casefoldedAccount)
settingsKey := fmt.Sprintf(keyAccountSettings, casefoldedAccount)
vhostKey := fmt.Sprintf(keyAccountVHost, casefoldedAccount)
vhostQueueKey := fmt.Sprintf(keyVHostQueueAcctToId, casefoldedAccount)
channelsKey := fmt.Sprintf(keyAccountChannels, casefoldedAccount)
var clients []*Client
var registeredChannels []string
// on our way out, unregister all the account's channels and delete them from the db
defer func() {
for _, channelName := range registeredChannels {
am.server.channels.SetUnregistered(channelName, casefoldedAccount)
}
}()
var credText string
var rawNicks string
am.serialCacheUpdateMutex.Lock()
defer am.serialCacheUpdateMutex.Unlock()
var accountName string
var channelsStr string
am.server.store.Update(func(tx *buntdb.Tx) error {
tx.Delete(accountKey)
accountName, _ = tx.Get(accountNameKey)
tx.Delete(accountNameKey)
tx.Delete(verifiedKey)
tx.Delete(registeredTimeKey)
tx.Delete(callbackKey)
tx.Delete(verificationCodeKey)
tx.Delete(settingsKey)
rawNicks, _ = tx.Get(nicksKey)
tx.Delete(nicksKey)
credText, err = tx.Get(credentialsKey)
tx.Delete(credentialsKey)
tx.Delete(vhostKey)
channelsStr, _ = tx.Get(channelsKey)
tx.Delete(channelsKey)
_, err := tx.Delete(vhostQueueKey)
am.decrementVHostQueueCount(casefoldedAccount, err)
return nil
})
if err == nil {
var creds AccountCredentials
if err = json.Unmarshal([]byte(credText), &creds); err == nil && creds.Certificate != "" {
certFPKey := fmt.Sprintf(keyCertToAccount, creds.Certificate)
am.server.store.Update(func(tx *buntdb.Tx) error {
if account, err := tx.Get(certFPKey); err == nil && account == casefoldedAccount {
tx.Delete(certFPKey)
}
return nil
})
}
}
skeleton, _ := Skeleton(accountName)
additionalNicks := unmarshalReservedNicks(rawNicks)
registeredChannels = unmarshalRegisteredChannels(channelsStr)
am.Lock()
defer am.Unlock()
clients = am.accountToClients[casefoldedAccount]
delete(am.accountToClients, casefoldedAccount)
delete(am.nickToAccount, casefoldedAccount)
delete(am.skeletonToAccount, skeleton)
for _, nick := range additionalNicks {
delete(am.nickToAccount, nick)
additionalSkel, _ := Skeleton(nick)
delete(am.skeletonToAccount, additionalSkel)
}
for _, client := range clients {
if config.Accounts.RequireSasl.Enabled {
client.Quit(client.t("You are no longer authorized to be on this server"), nil)
// destroy acquires a semaphore so we can't call it while holding a lock
go client.destroy(nil)
} else {
am.logoutOfAccount(client)
}
}
if err != nil {
return errAccountDoesNotExist
}
return nil
}
func unmarshalRegisteredChannels(channelsStr string) (result []string) {
if channelsStr != "" {
result = strings.Split(channelsStr, ",")
}
return
}
func (am *AccountManager) ChannelsForAccount(account string) (channels []string) {
cfaccount, err := CasefoldName(account)
if err != nil {
return
}
var channelStr string
key := fmt.Sprintf(keyAccountChannels, cfaccount)
am.server.store.View(func(tx *buntdb.Tx) error {
channelStr, _ = tx.Get(key)
return nil
})
return unmarshalRegisteredChannels(channelStr)
}
func (am *AccountManager) AuthenticateByCertFP(client *Client) error {
if client.certfp == "" {
return errAccountInvalidCredentials
}
var account string
certFPKey := fmt.Sprintf(keyCertToAccount, client.certfp)
err := am.server.store.View(func(tx *buntdb.Tx) error {
account, _ = tx.Get(certFPKey)
if account == "" {
return errAccountInvalidCredentials
}
return nil
})
if err != nil {
return err
}
// ok, we found an account corresponding to their certificate
clientAccount, err := am.LoadAccount(account)
if err != nil {
return err
} else if !clientAccount.Verified {
return errAccountUnverified
}
am.Login(client, clientAccount)