-
Notifications
You must be signed in to change notification settings - Fork 1.8k
/
config.go
696 lines (584 loc) · 21.4 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
package home
import (
"bytes"
"fmt"
"net/netip"
"os"
"path/filepath"
"sync"
"github.com/AdguardTeam/AdGuardHome/internal/aghalg"
"github.com/AdguardTeam/AdGuardHome/internal/aghtls"
"github.com/AdguardTeam/AdGuardHome/internal/configmigrate"
"github.com/AdguardTeam/AdGuardHome/internal/dhcpd"
"github.com/AdguardTeam/AdGuardHome/internal/dnsforward"
"github.com/AdguardTeam/AdGuardHome/internal/filtering"
"github.com/AdguardTeam/AdGuardHome/internal/querylog"
"github.com/AdguardTeam/AdGuardHome/internal/schedule"
"github.com/AdguardTeam/AdGuardHome/internal/stats"
"github.com/AdguardTeam/dnsproxy/fastip"
"github.com/AdguardTeam/golibs/errors"
"github.com/AdguardTeam/golibs/log"
"github.com/AdguardTeam/golibs/netutil"
"github.com/AdguardTeam/golibs/timeutil"
"github.com/google/renameio/v2/maybe"
yaml "gopkg.in/yaml.v3"
)
// dataDir is the name of a directory under the working one to store some
// persistent data.
const dataDir = "data"
// logSettings are the logging settings part of the configuration file.
type logSettings struct {
// File is the path to the log file. If empty, logs are written to stdout.
// If "syslog", logs are written to syslog.
File string `yaml:"file"`
// MaxBackups is the maximum number of old log files to retain.
//
// NOTE: MaxAge may still cause them to get deleted.
MaxBackups int `yaml:"max_backups"`
// MaxSize is the maximum size of the log file before it gets rotated, in
// megabytes. The default value is 100 MB.
MaxSize int `yaml:"max_size"`
// MaxAge is the maximum duration for retaining old log files, in days.
MaxAge int `yaml:"max_age"`
// Compress determines, if the rotated log files should be compressed using
// gzip.
Compress bool `yaml:"compress"`
// LocalTime determines, if the time used for formatting the timestamps in
// is the computer's local time.
LocalTime bool `yaml:"local_time"`
// Verbose determines, if verbose (aka debug) logging is enabled.
Verbose bool `yaml:"verbose"`
}
// osConfig contains OS-related configuration.
type osConfig struct {
// Group is the name of the group which AdGuard Home must switch to on
// startup. Empty string means no switching.
Group string `yaml:"group"`
// User is the name of the user which AdGuard Home must switch to on
// startup. Empty string means no switching.
User string `yaml:"user"`
// RlimitNoFile is the maximum number of opened fd's per process. Zero
// means use the default value.
RlimitNoFile uint64 `yaml:"rlimit_nofile"`
}
type clientsConfig struct {
// Sources defines the set of sources to fetch the runtime clients from.
Sources *clientSourcesConfig `yaml:"runtime_sources"`
// Persistent are the configured clients.
Persistent []*clientObject `yaml:"persistent"`
}
// clientSourceConfig is used to configure where the runtime clients will be
// obtained from.
type clientSourcesConfig struct {
WHOIS bool `yaml:"whois"`
ARP bool `yaml:"arp"`
RDNS bool `yaml:"rdns"`
DHCP bool `yaml:"dhcp"`
HostsFile bool `yaml:"hosts"`
}
// configuration is loaded from YAML.
//
// Field ordering is important, YAML fields better not to be reordered, if it's
// not absolutely necessary.
type configuration struct {
// Raw file data to avoid re-reading of configuration file
// It's reset after config is parsed
fileData []byte
// HTTPConfig is the block with http conf.
HTTPConfig httpConfig `yaml:"http"`
// Users are the clients capable for accessing the web interface.
Users []webUser `yaml:"users"`
// AuthAttempts is the maximum number of failed login attempts a user
// can do before being blocked.
AuthAttempts uint `yaml:"auth_attempts"`
// AuthBlockMin is the duration, in minutes, of the block of new login
// attempts after AuthAttempts unsuccessful login attempts.
AuthBlockMin uint `yaml:"block_auth_min"`
// ProxyURL is the address of proxy server for the internal HTTP client.
ProxyURL string `yaml:"http_proxy"`
// Language is a two-letter ISO 639-1 language code.
Language string `yaml:"language"`
// Theme is a UI theme for current user.
Theme Theme `yaml:"theme"`
// TODO(a.garipov): Make DNS and the fields below pointers and validate
// and/or reset on explicit nulling.
DNS dnsConfig `yaml:"dns"`
TLS tlsConfigSettings `yaml:"tls"`
QueryLog queryLogConfig `yaml:"querylog"`
Stats statsConfig `yaml:"statistics"`
// Filters reflects the filters from [filtering.Config]. It's cloned to the
// config used in the filtering module at the startup. Afterwards it's
// cloned from the filtering module back here.
//
// TODO(e.burkov): Move all the filtering configuration fields into the
// only configuration subsection covering the changes with a single
// migration. Also keep the blocked services in mind.
Filters []filtering.FilterYAML `yaml:"filters"`
WhitelistFilters []filtering.FilterYAML `yaml:"whitelist_filters"`
UserRules []string `yaml:"user_rules"`
DHCP *dhcpd.ServerConfig `yaml:"dhcp"`
Filtering *filtering.Config `yaml:"filtering"`
// Clients contains the YAML representations of the persistent clients.
// This field is only used for reading and writing persistent client data.
// Keep this field sorted to ensure consistent ordering.
Clients *clientsConfig `yaml:"clients"`
// Log is a block with log configuration settings.
Log logSettings `yaml:"log"`
OSConfig *osConfig `yaml:"os"`
sync.RWMutex `yaml:"-"`
// SchemaVersion is the version of the configuration schema. See
// [configmigrate.LastSchemaVersion].
SchemaVersion uint `yaml:"schema_version"`
}
// httpConfig is a block with HTTP configuration params.
//
// Field ordering is important, YAML fields better not to be reordered, if it's
// not absolutely necessary.
type httpConfig struct {
// Pprof defines the profiling HTTP handler.
Pprof *httpPprofConfig `yaml:"pprof"`
// Address is the address to serve the web UI on.
Address netip.AddrPort
// SessionTTL for a web session.
// An active session is automatically refreshed once a day.
SessionTTL timeutil.Duration `yaml:"session_ttl"`
}
// httpPprofConfig is the block with pprof HTTP configuration.
type httpPprofConfig struct {
// Port for the profiling handler.
Port uint16 `yaml:"port"`
// Enabled defines if the profiling handler is enabled.
Enabled bool `yaml:"enabled"`
}
// dnsConfig is a block with DNS configuration params.
//
// Field ordering is important, YAML fields better not to be reordered, if it's
// not absolutely necessary.
type dnsConfig struct {
BindHosts []netip.Addr `yaml:"bind_hosts"`
Port uint16 `yaml:"port"`
// AnonymizeClientIP defines if clients' IP addresses should be anonymized
// in query log and statistics.
AnonymizeClientIP bool `yaml:"anonymize_client_ip"`
// Config is the embed configuration with DNS params.
//
// TODO(a.garipov): Remove embed.
dnsforward.Config `yaml:",inline"`
// UpstreamTimeout is the timeout for querying upstream servers.
UpstreamTimeout timeutil.Duration `yaml:"upstream_timeout"`
// PrivateNets is the set of IP networks for which the private reverse DNS
// resolver should be used.
PrivateNets []netutil.Prefix `yaml:"private_networks"`
// UsePrivateRDNS defines if the PTR requests for unknown addresses from
// locally-served networks should be resolved via private PTR resolvers.
UsePrivateRDNS bool `yaml:"use_private_ptr_resolvers"`
// LocalPTRResolvers is the slice of addresses to be used as upstreams
// for PTR queries for locally-served networks.
LocalPTRResolvers []string `yaml:"local_ptr_upstreams"`
// UseDNS64 defines if DNS64 should be used for incoming requests.
UseDNS64 bool `yaml:"use_dns64"`
// DNS64Prefixes is the list of NAT64 prefixes to be used for DNS64.
DNS64Prefixes []netip.Prefix `yaml:"dns64_prefixes"`
// ServeHTTP3 defines if HTTP/3 is allowed for incoming requests.
//
// TODO(a.garipov): Add to the UI when HTTP/3 support is no longer
// experimental.
ServeHTTP3 bool `yaml:"serve_http3"`
// UseHTTP3Upstreams defines if HTTP/3 is allowed for DNS-over-HTTPS
// upstreams.
//
// TODO(a.garipov): Add to the UI when HTTP/3 support is no longer
// experimental.
UseHTTP3Upstreams bool `yaml:"use_http3_upstreams"`
// ServePlainDNS defines if plain DNS is allowed for incoming requests.
ServePlainDNS bool `yaml:"serve_plain_dns"`
}
type tlsConfigSettings struct {
Enabled bool `yaml:"enabled" json:"enabled"` // Enabled is the encryption (DoT/DoH/HTTPS) status
ServerName string `yaml:"server_name" json:"server_name,omitempty"` // ServerName is the hostname of your HTTPS/TLS server
ForceHTTPS bool `yaml:"force_https" json:"force_https"` // ForceHTTPS: if true, forces HTTP->HTTPS redirect
PortHTTPS uint16 `yaml:"port_https" json:"port_https,omitempty"` // HTTPS port. If 0, HTTPS will be disabled
PortDNSOverTLS uint16 `yaml:"port_dns_over_tls" json:"port_dns_over_tls,omitempty"` // DNS-over-TLS port. If 0, DoT will be disabled
PortDNSOverQUIC uint16 `yaml:"port_dns_over_quic" json:"port_dns_over_quic,omitempty"` // DNS-over-QUIC port. If 0, DoQ will be disabled
// PortDNSCrypt is the port for DNSCrypt requests. If it's zero,
// DNSCrypt is disabled.
PortDNSCrypt uint16 `yaml:"port_dnscrypt" json:"port_dnscrypt"`
// DNSCryptConfigFile is the path to the DNSCrypt config file. Must be
// set if PortDNSCrypt is not zero.
//
// See https://github.com/AdguardTeam/dnsproxy and
// https://github.com/ameshkov/dnscrypt.
DNSCryptConfigFile string `yaml:"dnscrypt_config_file" json:"dnscrypt_config_file"`
// Allow DoH queries via unencrypted HTTP (e.g. for reverse proxying)
AllowUnencryptedDoH bool `yaml:"allow_unencrypted_doh" json:"allow_unencrypted_doh"`
dnsforward.TLSConfig `yaml:",inline" json:",inline"`
}
type queryLogConfig struct {
// Ignored is the list of host names, which should not be written to log.
// "." is considered to be the root domain.
Ignored []string `yaml:"ignored"`
// Interval is the interval for query log's files rotation.
Interval timeutil.Duration `yaml:"interval"`
// MemSize is the number of entries kept in memory before they are flushed
// to disk.
MemSize uint `yaml:"size_memory"`
// Enabled defines if the query log is enabled.
Enabled bool `yaml:"enabled"`
// FileEnabled defines, if the query log is written to the file.
FileEnabled bool `yaml:"file_enabled"`
}
type statsConfig struct {
// Ignored is the list of host names, which should not be counted.
Ignored []string `yaml:"ignored"`
// Interval is the retention interval for statistics.
Interval timeutil.Duration `yaml:"interval"`
// Enabled defines if the statistics are enabled.
Enabled bool `yaml:"enabled"`
}
// Default block host constants.
const (
defaultSafeBrowsingBlockHost = "standard-block.dns.adguard.com"
defaultParentalBlockHost = "family-block.dns.adguard.com"
)
// config is the global configuration structure.
//
// TODO(a.garipov, e.burkov): This global is awful and must be removed.
var config = &configuration{
AuthAttempts: 5,
AuthBlockMin: 15,
HTTPConfig: httpConfig{
Address: netip.AddrPortFrom(netip.IPv4Unspecified(), 3000),
SessionTTL: timeutil.Duration{Duration: 30 * timeutil.Day},
Pprof: &httpPprofConfig{
Enabled: false,
Port: 6060,
},
},
DNS: dnsConfig{
BindHosts: []netip.Addr{netip.IPv4Unspecified()},
Port: defaultPortDNS,
Config: dnsforward.Config{
Ratelimit: 20,
RatelimitSubnetLenIPv4: 24,
RatelimitSubnetLenIPv6: 56,
RefuseAny: true,
UpstreamMode: dnsforward.UpstreamModeLoadBalance,
HandleDDR: true,
FastestTimeout: timeutil.Duration{
Duration: fastip.DefaultPingWaitTimeout,
},
TrustedProxies: []netutil.Prefix{{
Prefix: netip.MustParsePrefix("127.0.0.0/8"),
}, {
Prefix: netip.MustParsePrefix("::1/128"),
}},
CacheSize: 4 * 1024 * 1024,
EDNSClientSubnet: &dnsforward.EDNSClientSubnet{
CustomIP: netip.Addr{},
Enabled: false,
UseCustom: false,
},
// set default maximum concurrent queries to 300
// we introduced a default limit due to this:
// https://github.com/AdguardTeam/AdGuardHome/issues/2015#issuecomment-674041912
// was later increased to 300 due to https://github.com/AdguardTeam/AdGuardHome/issues/2257
MaxGoroutines: 300,
},
UpstreamTimeout: timeutil.Duration{Duration: dnsforward.DefaultTimeout},
UsePrivateRDNS: true,
ServePlainDNS: true,
},
TLS: tlsConfigSettings{
PortHTTPS: defaultPortHTTPS,
PortDNSOverTLS: defaultPortTLS, // needs to be passed through to dnsproxy
PortDNSOverQUIC: defaultPortQUIC,
},
QueryLog: queryLogConfig{
Enabled: true,
FileEnabled: true,
Interval: timeutil.Duration{Duration: 90 * timeutil.Day},
MemSize: 1000,
Ignored: []string{},
},
Stats: statsConfig{
Enabled: true,
Interval: timeutil.Duration{Duration: 1 * timeutil.Day},
Ignored: []string{},
},
// NOTE: Keep these parameters in sync with the one put into
// client/src/helpers/filters/filters.js by scripts/vetted-filters.
//
// TODO(a.garipov): Think of a way to make scripts/vetted-filters update
// these as well if necessary.
Filters: []filtering.FilterYAML{{
Filter: filtering.Filter{ID: 1},
Enabled: true,
URL: "https://adguardteam.github.io/HostlistsRegistry/assets/filter_1.txt",
Name: "AdGuard DNS filter",
}, {
Filter: filtering.Filter{ID: 2},
Enabled: false,
URL: "https://adguardteam.github.io/HostlistsRegistry/assets/filter_2.txt",
Name: "AdAway Default Blocklist",
}},
Filtering: &filtering.Config{
ProtectionEnabled: true,
BlockingMode: filtering.BlockingModeDefault,
BlockedResponseTTL: 10, // in seconds
FilteringEnabled: true,
FiltersUpdateIntervalHours: 24,
ParentalEnabled: false,
SafeBrowsingEnabled: false,
SafeBrowsingCacheSize: 1 * 1024 * 1024,
SafeSearchCacheSize: 1 * 1024 * 1024,
ParentalCacheSize: 1 * 1024 * 1024,
CacheTime: 30,
SafeSearchConf: filtering.SafeSearchConfig{
Enabled: false,
Bing: true,
DuckDuckGo: true,
Google: true,
Pixabay: true,
Yandex: true,
YouTube: true,
},
BlockedServices: &filtering.BlockedServices{
Schedule: schedule.EmptyWeekly(),
IDs: []string{},
},
ParentalBlockHost: defaultParentalBlockHost,
SafeBrowsingBlockHost: defaultSafeBrowsingBlockHost,
},
DHCP: &dhcpd.ServerConfig{
LocalDomainName: "lan",
Conf4: dhcpd.V4ServerConf{
LeaseDuration: dhcpd.DefaultDHCPLeaseTTL,
ICMPTimeout: dhcpd.DefaultDHCPTimeoutICMP,
},
Conf6: dhcpd.V6ServerConf{
LeaseDuration: dhcpd.DefaultDHCPLeaseTTL,
},
},
Clients: &clientsConfig{
Sources: &clientSourcesConfig{
WHOIS: true,
ARP: true,
RDNS: true,
DHCP: true,
HostsFile: true,
},
},
Log: logSettings{
Compress: false,
LocalTime: false,
MaxBackups: 0,
MaxSize: 100,
MaxAge: 3,
},
OSConfig: &osConfig{},
SchemaVersion: configmigrate.LastSchemaVersion,
Theme: ThemeAuto,
}
// getConfigFilename returns path to the current config file
func (c *configuration) getConfigFilename() string {
configFile, err := filepath.EvalSymlinks(Context.configFilename)
if err != nil {
if !errors.Is(err, os.ErrNotExist) {
log.Error("unexpected error while config file path evaluation: %s", err)
}
configFile = Context.configFilename
}
if !filepath.IsAbs(configFile) {
configFile = filepath.Join(Context.workDir, configFile)
}
return configFile
}
// validateBindHosts returns error if any of binding hosts from configuration is
// not a valid IP address.
func validateBindHosts(conf *configuration) (err error) {
if !conf.HTTPConfig.Address.IsValid() {
return errors.Error("http.address is not a valid ip address")
}
for i, addr := range conf.DNS.BindHosts {
if !addr.IsValid() {
return fmt.Errorf("dns.bind_hosts at index %d is not a valid ip address", i)
}
}
return nil
}
// parseConfig loads configuration from the YAML file, upgrading it if
// necessary.
func parseConfig() (err error) {
// Do the upgrade if necessary.
config.fileData, err = readConfigFile()
if err != nil {
return err
}
migrator := configmigrate.New(&configmigrate.Config{
WorkingDir: Context.workDir,
})
var upgraded bool
config.fileData, upgraded, err = migrator.Migrate(
config.fileData,
configmigrate.LastSchemaVersion,
)
if err != nil {
// Don't wrap the error, because it's informative enough as is.
return err
} else if upgraded {
err = maybe.WriteFile(config.getConfigFilename(), config.fileData, 0o644)
if err != nil {
return fmt.Errorf("writing new config: %w", err)
}
}
err = yaml.Unmarshal(config.fileData, &config)
if err != nil {
// Don't wrap the error since it's informative enough as is.
return err
}
err = validateConfig()
if err != nil {
return err
}
if config.DNS.UpstreamTimeout.Duration == 0 {
config.DNS.UpstreamTimeout = timeutil.Duration{Duration: dnsforward.DefaultTimeout}
}
err = setContextTLSCipherIDs()
if err != nil {
return err
}
return nil
}
// validateConfig returns error if the configuration is invalid.
func validateConfig() (err error) {
err = validateBindHosts(config)
if err != nil {
// Don't wrap the error since it's informative enough as is.
return err
}
tcpPorts := aghalg.UniqChecker[tcpPort]{}
addPorts(tcpPorts, tcpPort(config.HTTPConfig.Address.Port()))
udpPorts := aghalg.UniqChecker[udpPort]{}
addPorts(udpPorts, udpPort(config.DNS.Port))
if config.TLS.Enabled {
addPorts(
tcpPorts,
tcpPort(config.TLS.PortHTTPS),
tcpPort(config.TLS.PortDNSOverTLS),
tcpPort(config.TLS.PortDNSCrypt),
)
// TODO(e.burkov): Consider adding a udpPort with the same value when
// we add support for HTTP/3 for web admin interface.
addPorts(udpPorts, udpPort(config.TLS.PortDNSOverQUIC))
}
if err = tcpPorts.Validate(); err != nil {
return fmt.Errorf("validating tcp ports: %w", err)
} else if err = udpPorts.Validate(); err != nil {
return fmt.Errorf("validating udp ports: %w", err)
}
if !filtering.ValidateUpdateIvl(config.Filtering.FiltersUpdateIntervalHours) {
config.Filtering.FiltersUpdateIntervalHours = 24
}
return nil
}
// udpPort is the port number for UDP protocol.
type udpPort uint16
// tcpPort is the port number for TCP protocol.
type tcpPort uint16
// addPorts is a helper for ports validation that skips zero ports.
func addPorts[T tcpPort | udpPort](uc aghalg.UniqChecker[T], ports ...T) {
for _, p := range ports {
if p != 0 {
uc.Add(p)
}
}
}
// readConfigFile reads configuration file contents.
func readConfigFile() (fileData []byte, err error) {
if len(config.fileData) > 0 {
return config.fileData, nil
}
name := config.getConfigFilename()
log.Debug("reading config file: %s", name)
// Do not wrap the error because it's informative enough as is.
return os.ReadFile(name)
}
// Saves configuration to the YAML file and also saves the user filter contents to a file
func (c *configuration) write() (err error) {
c.Lock()
defer c.Unlock()
if Context.auth != nil {
config.Users = Context.auth.usersList()
}
if Context.tls != nil {
tlsConf := tlsConfigSettings{}
Context.tls.WriteDiskConfig(&tlsConf)
config.TLS = tlsConf
}
if Context.stats != nil {
statsConf := stats.Config{}
Context.stats.WriteDiskConfig(&statsConf)
config.Stats.Interval = timeutil.Duration{Duration: statsConf.Limit}
config.Stats.Enabled = statsConf.Enabled
config.Stats.Ignored = statsConf.Ignored.Values()
}
if Context.queryLog != nil {
dc := querylog.Config{}
Context.queryLog.WriteDiskConfig(&dc)
config.DNS.AnonymizeClientIP = dc.AnonymizeClientIP
config.QueryLog.Enabled = dc.Enabled
config.QueryLog.FileEnabled = dc.FileEnabled
config.QueryLog.Interval = timeutil.Duration{Duration: dc.RotationIvl}
config.QueryLog.MemSize = dc.MemSize
config.QueryLog.Ignored = dc.Ignored.Values()
}
if Context.filters != nil {
Context.filters.WriteDiskConfig(config.Filtering)
config.Filters = config.Filtering.Filters
config.WhitelistFilters = config.Filtering.WhitelistFilters
config.UserRules = config.Filtering.UserRules
}
if s := Context.dnsServer; s != nil {
c := dnsforward.Config{}
s.WriteDiskConfig(&c)
dns := &config.DNS
dns.Config = c
dns.LocalPTRResolvers = s.LocalPTRResolvers()
addrProcConf := s.AddrProcConfig()
config.Clients.Sources.RDNS = addrProcConf.UseRDNS
config.Clients.Sources.WHOIS = addrProcConf.UseWHOIS
dns.UsePrivateRDNS = addrProcConf.UsePrivateRDNS
}
if Context.dhcpServer != nil {
Context.dhcpServer.WriteDiskConfig(config.DHCP)
}
config.Clients.Persistent = Context.clients.forConfig()
configFile := config.getConfigFilename()
log.Debug("writing config file %q", configFile)
buf := &bytes.Buffer{}
enc := yaml.NewEncoder(buf)
enc.SetIndent(2)
err = enc.Encode(config)
if err != nil {
return fmt.Errorf("generating config file: %w", err)
}
err = maybe.WriteFile(configFile, buf.Bytes(), 0o644)
if err != nil {
return fmt.Errorf("writing config file: %w", err)
}
return nil
}
// setContextTLSCipherIDs sets the TLS cipher suite IDs to use.
func setContextTLSCipherIDs() (err error) {
if len(config.TLS.OverrideTLSCiphers) == 0 {
log.Info("tls: using default ciphers")
Context.tlsCipherIDs = aghtls.SaferCipherSuites()
return nil
}
log.Info("tls: overriding ciphers: %s", config.TLS.OverrideTLSCiphers)
Context.tlsCipherIDs, err = aghtls.ParseCiphers(config.TLS.OverrideTLSCiphers)
if err != nil {
return fmt.Errorf("parsing override ciphers: %w", err)
}
return nil
}