/
connstring.go
1025 lines (932 loc) · 28.7 KB
/
connstring.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) MongoDB, Inc. 2017-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
package connstring // import "go.mongodb.org/mongo-driver/x/mongo/driver/connstring"
import (
"errors"
"fmt"
"math/rand"
"net"
"net/url"
"strconv"
"strings"
"time"
"go.mongodb.org/mongo-driver/internal"
"go.mongodb.org/mongo-driver/internal/randutil"
"go.mongodb.org/mongo-driver/mongo/writeconcern"
"go.mongodb.org/mongo-driver/x/mongo/driver/dns"
"go.mongodb.org/mongo-driver/x/mongo/driver/wiremessage"
)
// random is a package-global pseudo-random number generator.
var random = randutil.NewLockedRand(rand.NewSource(time.Now().UnixNano()))
// ParseAndValidate parses the provided URI into a ConnString object.
// It check that all values are valid.
func ParseAndValidate(s string) (ConnString, error) {
p := parser{dnsResolver: dns.DefaultResolver}
err := p.parse(s)
if err != nil {
return p.ConnString, internal.WrapErrorf(err, "error parsing uri")
}
err = p.ConnString.Validate()
if err != nil {
return p.ConnString, internal.WrapErrorf(err, "error validating uri")
}
return p.ConnString, nil
}
// Parse parses the provided URI into a ConnString object
// but does not check that all values are valid. Use `ConnString.Validate()`
// to run the validation checks separately.
func Parse(s string) (ConnString, error) {
p := parser{dnsResolver: dns.DefaultResolver}
err := p.parse(s)
if err != nil {
err = internal.WrapErrorf(err, "error parsing uri")
}
return p.ConnString, err
}
// ConnString represents a connection string to mongodb.
type ConnString struct {
Original string
AppName string
AuthMechanism string
AuthMechanismProperties map[string]string
AuthMechanismPropertiesSet bool
AuthSource string
AuthSourceSet bool
Compressors []string
Connect ConnectMode
ConnectSet bool
DirectConnection bool
DirectConnectionSet bool
ConnectTimeout time.Duration
ConnectTimeoutSet bool
Database string
HeartbeatInterval time.Duration
HeartbeatIntervalSet bool
Hosts []string
J bool
JSet bool
LoadBalanced bool
LoadBalancedSet bool
LocalThreshold time.Duration
LocalThresholdSet bool
MaxConnIdleTime time.Duration
MaxConnIdleTimeSet bool
MaxPoolSize uint64
MaxPoolSizeSet bool
MinPoolSize uint64
MinPoolSizeSet bool
MaxConnecting uint64
MaxConnectingSet bool
Password string
PasswordSet bool
ReadConcernLevel string
ReadPreference string
ReadPreferenceTagSets []map[string]string
RetryWrites bool
RetryWritesSet bool
RetryReads bool
RetryReadsSet bool
MaxStaleness time.Duration
MaxStalenessSet bool
ReplicaSet string
Scheme string
ServerSelectionTimeout time.Duration
ServerSelectionTimeoutSet bool
SocketTimeout time.Duration
SocketTimeoutSet bool
SRVMaxHosts int
SRVServiceName string
SSL bool
SSLSet bool
SSLClientCertificateKeyFile string
SSLClientCertificateKeyFileSet bool
SSLClientCertificateKeyPassword func() string
SSLClientCertificateKeyPasswordSet bool
SSLCertificateFile string
SSLCertificateFileSet bool
SSLPrivateKeyFile string
SSLPrivateKeyFileSet bool
SSLInsecure bool
SSLInsecureSet bool
SSLCaFile string
SSLCaFileSet bool
SSLDisableOCSPEndpointCheck bool
SSLDisableOCSPEndpointCheckSet bool
WString string
WNumber int
WNumberSet bool
Username string
UsernameSet bool
ZlibLevel int
ZlibLevelSet bool
ZstdLevel int
ZstdLevelSet bool
WTimeout time.Duration
WTimeoutSet bool
WTimeoutSetFromOption bool
Options map[string][]string
UnknownOptions map[string][]string
}
func (u *ConnString) String() string {
return u.Original
}
// HasAuthParameters returns true if this ConnString has any authentication parameters set and therefore represents
// a request for authentication.
func (u *ConnString) HasAuthParameters() bool {
// Check all auth parameters except for AuthSource because an auth source without other credentials is semantically
// valid and must not be interpreted as a request for authentication.
return u.AuthMechanism != "" || u.AuthMechanismProperties != nil || u.UsernameSet || u.PasswordSet
}
// Validate checks that the Auth and SSL parameters are valid values.
func (u *ConnString) Validate() error {
p := parser{
dnsResolver: dns.DefaultResolver,
ConnString: *u,
}
return p.validate()
}
// ConnectMode informs the driver on how to connect
// to the server.
type ConnectMode uint8
var _ fmt.Stringer = ConnectMode(0)
// ConnectMode constants.
const (
AutoConnect ConnectMode = iota
SingleConnect
)
// String implements the fmt.Stringer interface.
func (c ConnectMode) String() string {
switch c {
case AutoConnect:
return "automatic"
case SingleConnect:
return "direct"
default:
return "unknown"
}
}
// Scheme constants
const (
SchemeMongoDB = "mongodb"
SchemeMongoDBSRV = "mongodb+srv"
)
type parser struct {
ConnString
dnsResolver *dns.Resolver
tlsssl *bool // used to determine if tls and ssl options are both specified and set differently.
}
func (p *parser) parse(original string) error {
p.Original = original
uri := original
var err error
if strings.HasPrefix(uri, SchemeMongoDBSRV+"://") {
p.Scheme = SchemeMongoDBSRV
// remove the scheme
uri = uri[len(SchemeMongoDBSRV)+3:]
} else if strings.HasPrefix(uri, SchemeMongoDB+"://") {
p.Scheme = SchemeMongoDB
// remove the scheme
uri = uri[len(SchemeMongoDB)+3:]
} else {
return fmt.Errorf("scheme must be \"mongodb\" or \"mongodb+srv\"")
}
if idx := strings.Index(uri, "@"); idx != -1 {
userInfo := uri[:idx]
uri = uri[idx+1:]
username := userInfo
var password string
if idx := strings.Index(userInfo, ":"); idx != -1 {
username = userInfo[:idx]
password = userInfo[idx+1:]
p.PasswordSet = true
}
// Validate and process the username.
if strings.Contains(username, "/") {
return fmt.Errorf("unescaped slash in username")
}
p.Username, err = url.QueryUnescape(username)
if err != nil {
return internal.WrapErrorf(err, "invalid username")
}
p.UsernameSet = true
// Validate and process the password.
if strings.Contains(password, ":") {
return fmt.Errorf("unescaped colon in password")
}
if strings.Contains(password, "/") {
return fmt.Errorf("unescaped slash in password")
}
p.Password, err = url.QueryUnescape(password)
if err != nil {
return internal.WrapErrorf(err, "invalid password")
}
}
// fetch the hosts field
hosts := uri
if idx := strings.IndexAny(uri, "/?@"); idx != -1 {
if uri[idx] == '@' {
return fmt.Errorf("unescaped @ sign in user info")
}
if uri[idx] == '?' {
return fmt.Errorf("must have a / before the query ?")
}
hosts = uri[:idx]
}
parsedHosts := strings.Split(hosts, ",")
uri = uri[len(hosts):]
extractedDatabase, err := extractDatabaseFromURI(uri)
if err != nil {
return err
}
uri = extractedDatabase.uri
p.Database = extractedDatabase.db
// grab connection arguments from URI
connectionArgsFromQueryString, err := extractQueryArgsFromURI(uri)
if err != nil {
return err
}
// grab connection arguments from TXT record and enable SSL if "mongodb+srv://"
var connectionArgsFromTXT []string
if p.Scheme == SchemeMongoDBSRV {
connectionArgsFromTXT, err = p.dnsResolver.GetConnectionArgsFromTXT(hosts)
if err != nil {
return err
}
// SSL is enabled by default for SRV, but can be manually disabled with "ssl=false".
p.SSL = true
p.SSLSet = true
}
// add connection arguments from URI and TXT records to connstring
connectionArgPairs := append(connectionArgsFromTXT, connectionArgsFromQueryString...)
for _, pair := range connectionArgPairs {
err := p.addOption(pair)
if err != nil {
return err
}
}
// do SRV lookup if "mongodb+srv://"
if p.Scheme == SchemeMongoDBSRV {
parsedHosts, err = p.dnsResolver.ParseHosts(hosts, p.SRVServiceName, true)
if err != nil {
return err
}
// If p.SRVMaxHosts is non-zero and is less than the number of hosts, randomly
// select SRVMaxHosts hosts from parsedHosts.
if p.SRVMaxHosts > 0 && p.SRVMaxHosts < len(parsedHosts) {
random.Shuffle(len(parsedHosts), func(i, j int) {
parsedHosts[i], parsedHosts[j] = parsedHosts[j], parsedHosts[i]
})
parsedHosts = parsedHosts[:p.SRVMaxHosts]
}
}
for _, host := range parsedHosts {
err = p.addHost(host)
if err != nil {
return internal.WrapErrorf(err, "invalid host \"%s\"", host)
}
}
if len(p.Hosts) == 0 {
return fmt.Errorf("must have at least 1 host")
}
err = p.setDefaultAuthParams(extractedDatabase.db)
if err != nil {
return err
}
// If WTimeout was set from manual options passed in, set WTImeoutSet to true.
if p.WTimeoutSetFromOption {
p.WTimeoutSet = true
}
return nil
}
func (p *parser) validate() error {
var err error
err = p.validateAuth()
if err != nil {
return err
}
if err = p.validateSSL(); err != nil {
return err
}
// Check for invalid write concern (i.e. w=0 and j=true)
if p.WNumberSet && p.WNumber == 0 && p.JSet && p.J {
return writeconcern.ErrInconsistent
}
// Check for invalid use of direct connections.
if (p.ConnectSet && p.Connect == SingleConnect) || (p.DirectConnectionSet && p.DirectConnection) {
if len(p.Hosts) > 1 {
return errors.New("a direct connection cannot be made if multiple hosts are specified")
}
if p.Scheme == SchemeMongoDBSRV {
return errors.New("a direct connection cannot be made if an SRV URI is used")
}
if p.LoadBalancedSet && p.LoadBalanced {
return internal.ErrLoadBalancedWithDirectConnection
}
}
// Validation for load-balanced mode.
if p.LoadBalancedSet && p.LoadBalanced {
if len(p.Hosts) > 1 {
return internal.ErrLoadBalancedWithMultipleHosts
}
if p.ReplicaSet != "" {
return internal.ErrLoadBalancedWithReplicaSet
}
}
// Check for invalid use of SRVMaxHosts.
if p.SRVMaxHosts > 0 {
if p.ReplicaSet != "" {
return internal.ErrSRVMaxHostsWithReplicaSet
}
if p.LoadBalanced {
return internal.ErrSRVMaxHostsWithLoadBalanced
}
}
return nil
}
func (p *parser) setDefaultAuthParams(dbName string) error {
// We do this check here rather than in validateAuth because this function is called as part of parsing and sets
// the value of AuthSource if authentication is enabled.
if p.AuthSourceSet && p.AuthSource == "" {
return errors.New("authSource must be non-empty when supplied in a URI")
}
switch strings.ToLower(p.AuthMechanism) {
case "plain":
if p.AuthSource == "" {
p.AuthSource = dbName
if p.AuthSource == "" {
p.AuthSource = "$external"
}
}
case "gssapi":
if p.AuthMechanismProperties == nil {
p.AuthMechanismProperties = map[string]string{
"SERVICE_NAME": "mongodb",
}
} else if v, ok := p.AuthMechanismProperties["SERVICE_NAME"]; !ok || v == "" {
p.AuthMechanismProperties["SERVICE_NAME"] = "mongodb"
}
fallthrough
case "mongodb-aws", "mongodb-x509":
if p.AuthSource == "" {
p.AuthSource = "$external"
} else if p.AuthSource != "$external" {
return fmt.Errorf("auth source must be $external")
}
case "mongodb-cr":
fallthrough
case "scram-sha-1":
fallthrough
case "scram-sha-256":
if p.AuthSource == "" {
p.AuthSource = dbName
if p.AuthSource == "" {
p.AuthSource = "admin"
}
}
case "":
// Only set auth source if there is a request for authentication via non-empty credentials.
if p.AuthSource == "" && (p.AuthMechanismProperties != nil || p.Username != "" || p.PasswordSet) {
p.AuthSource = dbName
if p.AuthSource == "" {
p.AuthSource = "admin"
}
}
default:
return fmt.Errorf("invalid auth mechanism")
}
return nil
}
func (p *parser) validateAuth() error {
switch strings.ToLower(p.AuthMechanism) {
case "mongodb-cr":
if p.Username == "" {
return fmt.Errorf("username required for MONGO-CR")
}
if p.Password == "" {
return fmt.Errorf("password required for MONGO-CR")
}
if p.AuthMechanismProperties != nil {
return fmt.Errorf("MONGO-CR cannot have mechanism properties")
}
case "mongodb-x509":
if p.Password != "" {
return fmt.Errorf("password cannot be specified for MONGO-X509")
}
if p.AuthMechanismProperties != nil {
return fmt.Errorf("MONGO-X509 cannot have mechanism properties")
}
case "mongodb-aws":
if p.Username != "" && p.Password == "" {
return fmt.Errorf("username without password is invalid for MONGODB-AWS")
}
if p.Username == "" && p.Password != "" {
return fmt.Errorf("password without username is invalid for MONGODB-AWS")
}
var token bool
for k := range p.AuthMechanismProperties {
if k != "AWS_SESSION_TOKEN" {
return fmt.Errorf("invalid auth property for MONGODB-AWS")
}
token = true
}
if token && p.Username == "" && p.Password == "" {
return fmt.Errorf("token without username and password is invalid for MONGODB-AWS")
}
case "gssapi":
if p.Username == "" {
return fmt.Errorf("username required for GSSAPI")
}
for k := range p.AuthMechanismProperties {
if k != "SERVICE_NAME" && k != "CANONICALIZE_HOST_NAME" && k != "SERVICE_REALM" {
return fmt.Errorf("invalid auth property for GSSAPI")
}
}
case "plain":
if p.Username == "" {
return fmt.Errorf("username required for PLAIN")
}
if p.Password == "" {
return fmt.Errorf("password required for PLAIN")
}
if p.AuthMechanismProperties != nil {
return fmt.Errorf("PLAIN cannot have mechanism properties")
}
case "scram-sha-1":
if p.Username == "" {
return fmt.Errorf("username required for SCRAM-SHA-1")
}
if p.Password == "" {
return fmt.Errorf("password required for SCRAM-SHA-1")
}
if p.AuthMechanismProperties != nil {
return fmt.Errorf("SCRAM-SHA-1 cannot have mechanism properties")
}
case "scram-sha-256":
if p.Username == "" {
return fmt.Errorf("username required for SCRAM-SHA-256")
}
if p.Password == "" {
return fmt.Errorf("password required for SCRAM-SHA-256")
}
if p.AuthMechanismProperties != nil {
return fmt.Errorf("SCRAM-SHA-256 cannot have mechanism properties")
}
case "":
if p.UsernameSet && p.Username == "" {
return fmt.Errorf("username required if URI contains user info")
}
default:
return fmt.Errorf("invalid auth mechanism")
}
return nil
}
func (p *parser) validateSSL() error {
if !p.SSL {
return nil
}
if p.SSLClientCertificateKeyFileSet {
if p.SSLCertificateFileSet || p.SSLPrivateKeyFileSet {
return errors.New("the sslClientCertificateKeyFile/tlsCertificateKeyFile URI option cannot be provided " +
"along with tlsCertificateFile or tlsPrivateKeyFile")
}
return nil
}
if p.SSLCertificateFileSet && !p.SSLPrivateKeyFileSet {
return errors.New("the tlsPrivateKeyFile URI option must be provided if the tlsCertificateFile option is specified")
}
if p.SSLPrivateKeyFileSet && !p.SSLCertificateFileSet {
return errors.New("the tlsCertificateFile URI option must be provided if the tlsPrivateKeyFile option is specified")
}
if p.SSLInsecureSet && p.SSLDisableOCSPEndpointCheckSet {
return errors.New("the sslInsecure/tlsInsecure URI option cannot be provided along with " +
"tlsDisableOCSPEndpointCheck ")
}
return nil
}
func (p *parser) addHost(host string) error {
if host == "" {
return nil
}
host, err := url.QueryUnescape(host)
if err != nil {
return internal.WrapErrorf(err, "invalid host \"%s\"", host)
}
_, port, err := net.SplitHostPort(host)
// this is unfortunate that SplitHostPort actually requires
// a port to exist.
if err != nil {
if addrError, ok := err.(*net.AddrError); !ok || addrError.Err != "missing port in address" {
return err
}
}
if port != "" {
d, err := strconv.Atoi(port)
if err != nil {
return internal.WrapErrorf(err, "port must be an integer")
}
if d <= 0 || d >= 65536 {
return fmt.Errorf("port must be in the range [1, 65535]")
}
}
p.Hosts = append(p.Hosts, host)
return nil
}
func (p *parser) addOption(pair string) error {
kv := strings.SplitN(pair, "=", 2)
if len(kv) != 2 || kv[0] == "" {
return fmt.Errorf("invalid option")
}
key, err := url.QueryUnescape(kv[0])
if err != nil {
return internal.WrapErrorf(err, "invalid option key \"%s\"", kv[0])
}
value, err := url.QueryUnescape(kv[1])
if err != nil {
return internal.WrapErrorf(err, "invalid option value \"%s\"", kv[1])
}
lowerKey := strings.ToLower(key)
switch lowerKey {
case "appname":
p.AppName = value
case "authmechanism":
p.AuthMechanism = value
case "authmechanismproperties":
p.AuthMechanismProperties = make(map[string]string)
pairs := strings.Split(value, ",")
for _, pair := range pairs {
kv := strings.SplitN(pair, ":", 2)
if len(kv) != 2 || kv[0] == "" {
return fmt.Errorf("invalid authMechanism property")
}
p.AuthMechanismProperties[kv[0]] = kv[1]
}
p.AuthMechanismPropertiesSet = true
case "authsource":
p.AuthSource = value
p.AuthSourceSet = true
case "compressors":
compressors := strings.Split(value, ",")
if len(compressors) < 1 {
return fmt.Errorf("must have at least 1 compressor")
}
p.Compressors = compressors
case "connect":
switch strings.ToLower(value) {
case "automatic":
case "direct":
p.Connect = SingleConnect
default:
return fmt.Errorf("invalid 'connect' value: %s", value)
}
if p.DirectConnectionSet {
expectedValue := p.Connect == SingleConnect // directConnection should be true if connect=direct
if p.DirectConnection != expectedValue {
return fmt.Errorf("options connect=%s and directConnection=%v conflict", value, p.DirectConnection)
}
}
p.ConnectSet = true
case "directconnection":
switch strings.ToLower(value) {
case "true":
p.DirectConnection = true
case "false":
default:
return fmt.Errorf("invalid 'directConnection' value: %s", value)
}
if p.ConnectSet {
expectedValue := AutoConnect
if p.DirectConnection {
expectedValue = SingleConnect
}
if p.Connect != expectedValue {
return fmt.Errorf("options connect=%s and directConnection=%s conflict", p.Connect, value)
}
}
p.DirectConnectionSet = true
case "connecttimeoutms":
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.ConnectTimeout = time.Duration(n) * time.Millisecond
p.ConnectTimeoutSet = true
case "heartbeatintervalms", "heartbeatfrequencyms":
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.HeartbeatInterval = time.Duration(n) * time.Millisecond
p.HeartbeatIntervalSet = true
case "journal":
switch value {
case "true":
p.J = true
case "false":
p.J = false
default:
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.JSet = true
case "loadbalanced":
switch value {
case "true":
p.LoadBalanced = true
case "false":
p.LoadBalanced = false
default:
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.LoadBalancedSet = true
case "localthresholdms":
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.LocalThreshold = time.Duration(n) * time.Millisecond
p.LocalThresholdSet = true
case "maxidletimems":
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.MaxConnIdleTime = time.Duration(n) * time.Millisecond
p.MaxConnIdleTimeSet = true
case "maxpoolsize":
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.MaxPoolSize = uint64(n)
p.MaxPoolSizeSet = true
case "minpoolsize":
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.MinPoolSize = uint64(n)
p.MinPoolSizeSet = true
case "maxconnecting":
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.MaxConnecting = uint64(n)
p.MaxConnectingSet = true
case "readconcernlevel":
p.ReadConcernLevel = value
case "readpreference":
p.ReadPreference = value
case "readpreferencetags":
if value == "" {
// If "readPreferenceTags=" is supplied, append an empty map to tag sets to
// represent a wild-card.
p.ReadPreferenceTagSets = append(p.ReadPreferenceTagSets, map[string]string{})
break
}
tags := make(map[string]string)
items := strings.Split(value, ",")
for _, item := range items {
parts := strings.Split(item, ":")
if len(parts) != 2 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
tags[parts[0]] = parts[1]
}
p.ReadPreferenceTagSets = append(p.ReadPreferenceTagSets, tags)
case "maxstaleness", "maxstalenessseconds":
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.MaxStaleness = time.Duration(n) * time.Second
p.MaxStalenessSet = true
case "replicaset":
p.ReplicaSet = value
case "retrywrites":
switch value {
case "true":
p.RetryWrites = true
case "false":
p.RetryWrites = false
default:
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.RetryWritesSet = true
case "retryreads":
switch value {
case "true":
p.RetryReads = true
case "false":
p.RetryReads = false
default:
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.RetryReadsSet = true
case "serverselectiontimeoutms":
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.ServerSelectionTimeout = time.Duration(n) * time.Millisecond
p.ServerSelectionTimeoutSet = true
case "sockettimeoutms":
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.SocketTimeout = time.Duration(n) * time.Millisecond
p.SocketTimeoutSet = true
case "srvmaxhosts":
// srvMaxHosts can only be set on URIs with the "mongodb+srv" scheme
if p.Scheme != SchemeMongoDBSRV {
return fmt.Errorf("cannot specify srvMaxHosts on non-SRV URI")
}
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.SRVMaxHosts = n
case "srvservicename":
// srvServiceName can only be set on URIs with the "mongodb+srv" scheme
if p.Scheme != SchemeMongoDBSRV {
return fmt.Errorf("cannot specify srvServiceName on non-SRV URI")
}
// srvServiceName must be between 1 and 62 characters according to
// our specification. Empty service names are not valid, and the service
// name (including prepended underscore) should not exceed the 63 character
// limit for DNS query subdomains.
if len(value) < 1 || len(value) > 62 {
return fmt.Errorf("srvServiceName value must be between 1 and 62 characters")
}
p.SRVServiceName = value
case "ssl", "tls":
switch value {
case "true":
p.SSL = true
case "false":
p.SSL = false
default:
return fmt.Errorf("invalid value for %s: %s", key, value)
}
if p.tlsssl != nil && *p.tlsssl != p.SSL {
return errors.New("tls and ssl options, when both specified, must be equivalent")
}
p.tlsssl = new(bool)
*p.tlsssl = p.SSL
p.SSLSet = true
case "sslclientcertificatekeyfile", "tlscertificatekeyfile":
p.SSL = true
p.SSLSet = true
p.SSLClientCertificateKeyFile = value
p.SSLClientCertificateKeyFileSet = true
case "sslclientcertificatekeypassword", "tlscertificatekeyfilepassword":
p.SSLClientCertificateKeyPassword = func() string { return value }
p.SSLClientCertificateKeyPasswordSet = true
case "tlscertificatefile":
p.SSL = true
p.SSLSet = true
p.SSLCertificateFile = value
p.SSLCertificateFileSet = true
case "tlsprivatekeyfile":
p.SSL = true
p.SSLSet = true
p.SSLPrivateKeyFile = value
p.SSLPrivateKeyFileSet = true
case "sslinsecure", "tlsinsecure":
switch value {
case "true":
p.SSLInsecure = true
case "false":
p.SSLInsecure = false
default:
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.SSLInsecureSet = true
case "sslcertificateauthorityfile", "tlscafile":
p.SSL = true
p.SSLSet = true
p.SSLCaFile = value
p.SSLCaFileSet = true
case "tlsdisableocspendpointcheck":
p.SSL = true
p.SSLSet = true
switch value {
case "true":
p.SSLDisableOCSPEndpointCheck = true
case "false":
p.SSLDisableOCSPEndpointCheck = false
default:
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.SSLDisableOCSPEndpointCheckSet = true
case "w":
if w, err := strconv.Atoi(value); err == nil {
if w < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.WNumber = w
p.WNumberSet = true
p.WString = ""
break
}
p.WString = value
p.WNumberSet = false
case "wtimeoutms":
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.WTimeout = time.Duration(n) * time.Millisecond
p.WTimeoutSet = true
case "wtimeout":
// Defer to wtimeoutms, but not to a manually-set option.
if p.WTimeoutSet {
break
}
n, err := strconv.Atoi(value)
if err != nil || n < 0 {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
p.WTimeout = time.Duration(n) * time.Millisecond
case "zlibcompressionlevel":
level, err := strconv.Atoi(value)
if err != nil || (level < -1 || level > 9) {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
if level == -1 {
level = wiremessage.DefaultZlibLevel
}
p.ZlibLevel = level
p.ZlibLevelSet = true
case "zstdcompressionlevel":
const maxZstdLevel = 22 // https://github.com/facebook/zstd/blob/a880ca239b447968493dd2fed3850e766d6305cc/contrib/linux-kernel/lib/zstd/compress.c#L3291
level, err := strconv.Atoi(value)
if err != nil || (level < -1 || level > maxZstdLevel) {
return fmt.Errorf("invalid value for %s: %s", key, value)
}
if level == -1 {
level = wiremessage.DefaultZstdLevel
}
p.ZstdLevel = level
p.ZstdLevelSet = true
default:
if p.UnknownOptions == nil {
p.UnknownOptions = make(map[string][]string)
}
p.UnknownOptions[lowerKey] = append(p.UnknownOptions[lowerKey], value)
}
if p.Options == nil {
p.Options = make(map[string][]string)
}
p.Options[lowerKey] = append(p.Options[lowerKey], value)
return nil
}
func extractQueryArgsFromURI(uri string) ([]string, error) {
if len(uri) == 0 {
return nil, nil
}
if uri[0] != '?' {
return nil, errors.New("must have a ? separator between path and query")
}
uri = uri[1:]
if len(uri) == 0 {
return nil, nil
}
return strings.FieldsFunc(uri, func(r rune) bool { return r == ';' || r == '&' }), nil
}
type extractedDatabase struct {
uri string
db string
}
// extractDatabaseFromURI is a helper function to retrieve information about
// the database from the passed in URI. It accepts as an argument the currently
// parsed URI and returns the remainder of the uri, the database it found,
// and any error it encounters while parsing.
func extractDatabaseFromURI(uri string) (extractedDatabase, error) {
if len(uri) == 0 {
return extractedDatabase{}, nil
}
if uri[0] != '/' {