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Pull request 2114: 6480 upd proxy

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Updates #6480.

Squashed commit of the following:

commit 03d73fe8f6637b88d11cb331a71c78a0bc79ac7e
Merge: b6f9bd5af 1511fabee
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Dec 25 14:50:08 2023 +0300

    Merge branch 'master' into 6480-upd-proxy

commit b6f9bd5af43c55ec37133fae42f80adc58092f39
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Dec 19 19:31:14 2023 +0300

    dnsforward: imp code, docs

commit db0356cd4c4f4183604ce29b01e05f655519646a
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Dec 19 17:21:53 2023 +0300

    all: log changes

commit 0cbb0e8a6b525088f1f739b777229547fdd1dccb
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Dec 19 16:26:34 2023 +0300

    all: upd proxy
This commit is contained in:
Eugene Burkov 2023-12-25 18:23:10 +03:00
parent 1511fabeec
commit ad147ac7b6
7 changed files with 45 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
CHANGELOG.md
View File

@ -58,6 +58,7 @@ NOTE: Add new changes BELOW THIS COMMENT.
### Fixed
- Load balancing algorithm stuck on a single server ([#6480]).
- Statistics for 7 days displayed as 168 hours on the dashboard.
- Pre-filling the Edit static lease window with data ([#6534]).
- Names defined in the `/etc/hosts` for a single address family wrongly
@ -66,6 +67,7 @@ NOTE: Add new changes BELOW THIS COMMENT.
work on iOS ([#6352]).
[#6352]: https://github.com/AdguardTeam/AdGuardHome/issues/6352
[#6480]: https://github.com/AdguardTeam/AdGuardHome/issues/6480
[#6534]: https://github.com/AdguardTeam/AdGuardHome/issues/6534
[#6541]: https://github.com/AdguardTeam/AdGuardHome/issues/6541
[#6545]: https://github.com/AdguardTeam/AdGuardHome/issues/6545

6
go.mod
View File

@ -3,8 +3,8 @@ module github.com/AdguardTeam/AdGuardHome
go 1.20
require (
github.com/AdguardTeam/dnsproxy v0.60.1
github.com/AdguardTeam/golibs v0.18.0
github.com/AdguardTeam/dnsproxy v0.61.0
github.com/AdguardTeam/golibs v0.18.1
github.com/AdguardTeam/urlfilter v0.17.3
github.com/NYTimes/gziphandler v1.1.1
github.com/ameshkov/dnscrypt/v2 v2.2.7
@ -64,4 +64,6 @@ require (
golang.org/x/sync v0.5.0 // indirect
golang.org/x/text v0.14.0 // indirect
golang.org/x/tools v0.16.0 // indirect
gonum.org/v1/gonum v0.14.0 // indirect
)

10
go.sum
View File

@ -1,7 +1,7 @@
github.com/AdguardTeam/dnsproxy v0.60.1 h1:YveGe7UZLaAiePkaV3orkc0IIfPX9vi/qQDIFdeO//A=
github.com/AdguardTeam/dnsproxy v0.60.1/go.mod h1:B7FvvTFQZBfey1cJXQo732EyCLX6xj4JqrciCawATzg=
github.com/AdguardTeam/golibs v0.18.0 h1:ckS2YK7t2Ub6UkXl0fnreVaM15Zb07Hh1gmFqttjpWg=
github.com/AdguardTeam/golibs v0.18.0/go.mod h1:DKhCIXHcUYtBhU8ibTLKh1paUL96n5zhQBlx763sj+U=
github.com/AdguardTeam/dnsproxy v0.61.0 h1:A5tmOpPw9c1kw5L4RKrOPzscRZuzpLaikwXLDsibQnY=
github.com/AdguardTeam/dnsproxy v0.61.0/go.mod h1:IdmXdkpc+m+S2EajJkVZDZm//yQ4mQm2FCOugQpc/N8=
github.com/AdguardTeam/golibs v0.18.1 h1:6u0fvrIj2qjUsRdbIGJ9AR0g5QRSWdKIo/DYl3tp5aM=
github.com/AdguardTeam/golibs v0.18.1/go.mod h1:DKhCIXHcUYtBhU8ibTLKh1paUL96n5zhQBlx763sj+U=
github.com/AdguardTeam/urlfilter v0.17.3 h1:fg/ObbnO0Cv6aw0tW6N/ETDMhhNvmcUUOZ7HlmKC3rw=
github.com/AdguardTeam/urlfilter v0.17.3/go.mod h1:Jru7jFfeH2CoDf150uDs+rRYcZBzHHBz05r9REyDKyE=
github.com/NYTimes/gziphandler v1.1.1 h1:ZUDjpQae29j0ryrS0u/B8HZfJBtBQHjqw2rQ2cqUQ3I=
@ -164,6 +164,8 @@ golang.org/x/tools v0.16.0 h1:GO788SKMRunPIBCXiQyo2AaexLstOrVhuAL5YwsckQM=
golang.org/x/tools v0.16.0/go.mod h1:kYVVN6I1mBNoB1OX+noeBjbRk4IUEPa7JJ+TJMEooJ0=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gonum.org/v1/gonum v0.14.0 h1:2NiG67LD1tEH0D7kM+ps2V+fXmsAnpUeec7n8tcr4S0=
gonum.org/v1/gonum v0.14.0/go.mod h1:AoWeoz0becf9QMWtE8iWXNXc27fK4fNeHNf/oMejGfU=
google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=

4
internal/dnsforward/config.go
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@ -150,7 +150,7 @@ type Config struct {
// MaxGoroutines is the max number of parallel goroutines for processing
// incoming requests.
MaxGoroutines uint32 `yaml:"max_goroutines"`
MaxGoroutines uint `yaml:"max_goroutines"`
// HandleDDR, if true, handle DDR requests
HandleDDR bool `yaml:"handle_ddr"`
@ -319,7 +319,7 @@ func (s *Server) newProxyConfig() (conf *proxy.Config, err error) {
RequestHandler: s.handleDNSRequest,
HTTPSServerName: aghhttp.UserAgent(),
EnableEDNSClientSubnet: srvConf.EDNSClientSubnet.Enabled,
MaxGoroutines: int(srvConf.MaxGoroutines),
MaxGoroutines: srvConf.MaxGoroutines,
UseDNS64: srvConf.UseDNS64,
DNS64Prefs: srvConf.DNS64Prefixes,
}

36
internal/dnsforward/dnsforward.go
View File

@ -81,6 +81,7 @@ type DHCP interface {
Enabled() (ok bool)
}
// SystemResolvers is an interface for accessing the OS-provided resolvers.
type SystemResolvers interface {
// Addrs returns the list of system resolvers' addresses.
Addrs() (addrs []netip.AddrPort)
@ -469,13 +470,15 @@ func (s *Server) startLocked() error {
return err
}
// setupLocalResolvers initializes the resolvers for local addresses. It
// assumes s.serverLock is locked or the Server not running.
func (s *Server) setupLocalResolvers(boot upstream.Resolver) (err error) {
// prepareLocalResolvers initializes the local upstreams configuration using
// boot as bootstrap. It assumes that s.serverLock is locked or s not running.
func (s *Server) prepareLocalResolvers(
boot upstream.Resolver,
) (uc *proxy.UpstreamConfig, err error) {
set, err := s.conf.ourAddrsSet()
if err != nil {
// Don't wrap the error because it's informative enough as is.
return err
return nil, err
}
resolvers := s.conf.LocalPTRResolvers
@ -492,29 +495,46 @@ func (s *Server) setupLocalResolvers(boot upstream.Resolver) (err error) {
log.Debug("dnsforward: upstreams to resolve ptr for local addresses: %v", resolvers)
uc, err := s.prepareUpstreamConfig(resolvers, nil, &upstream.Options{
uc, err = s.prepareUpstreamConfig(resolvers, nil, &upstream.Options{
Bootstrap: boot,
Timeout: defaultLocalTimeout,
// TODO(e.burkov): Should we verify server's certificates?
PreferIPv6: s.conf.BootstrapPreferIPv6,
})
if err != nil {
return fmt.Errorf("preparing private upstreams: %w", err)
return nil, fmt.Errorf("preparing private upstreams: %w", err)
}
if confNeedsFiltering {
err = filterOutAddrs(uc, set)
if err != nil {
return fmt.Errorf("filtering private upstreams: %w", err)
return nil, fmt.Errorf("filtering private upstreams: %w", err)
}
}
return uc, nil
}
// setupLocalResolvers initializes and sets the resolvers for local addresses.
// It assumes s.serverLock is locked or s not running.
func (s *Server) setupLocalResolvers(boot upstream.Resolver) (err error) {
uc, err := s.prepareLocalResolvers(boot)
if err != nil {
// Don't wrap the error because it's informative enough as is.
return err
}
s.localResolvers = &proxy.Proxy{
Config: proxy.Config{
UpstreamConfig: uc,
},
}
err = s.localResolvers.Init()
if err != nil {
return fmt.Errorf("initializing proxy: %w", err)
}
// TODO(e.burkov): Should we also consider the DNS64 usage?
if s.conf.UsePrivateRDNS &&
// Only set the upstream config if there are any upstreams. It's safe
@ -700,7 +720,7 @@ func (s *Server) prepareInternalProxy() (err error) {
CacheEnabled: true,
CacheSizeBytes: 4096,
UpstreamConfig: srvConf.UpstreamConfig,
MaxGoroutines: int(s.conf.MaxGoroutines),
MaxGoroutines: s.conf.MaxGoroutines,
}
err = setProxyUpstreamMode(conf, srvConf.UpstreamMode, srvConf.FastestTimeout.Duration)

3
internal/dnsforward/dnsforward_test.go
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@ -1547,9 +1547,9 @@ func TestServer_Exchange(t *testing.T) {
},
},
}
srv.conf.UsePrivateRDNS = true
srv.privateNets = netutil.SubnetSetFunc(netutil.IsLocallyServed)
require.NoError(t, srv.internalProxy.Init())
testCases := []struct {
req netip.Addr
@ -1625,6 +1625,7 @@ func TestServer_Exchange(t *testing.T) {
srv.localResolvers = &proxy.Proxy{
Config: pcfg,
}
require.NoError(t, srv.localResolvers.Init())
t.Run(tc.name, func(t *testing.T) {
host, ttl, eerr := srv.Exchange(tc.req)

3
internal/dnsforward/process.go
View File

@ -639,8 +639,7 @@ func (s *Server) processLocalPTR(dctx *dnsContext) (rc resultCode) {
// Generate the server failure if the private upstream configuration
// is empty.
//
// TODO(e.burkov): Get rid of this crutch once the local resolvers
// logic is moved to the dnsproxy completely.
// This is a crutch, see TODO at [Server.localResolvers].
if errors.Is(err, upstream.ErrNoUpstreams) {
pctx.Res = s.genServerFailure(pctx.Req)