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cherry-pick: 3157 excessive ptrs

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Merge in DNS/adguard-home from 3157-excessive-ptrs to master

Updates #3157.

Squashed commit of the following:

commit 6803988240dca2f147bb80a5b3f78d7749d2fa14
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 19 14:50:01 2022 +0300

    aghnet: and again

commit 1a7f4d1dbc8fd4d3ae620349917526a75fa71b47
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 19 14:49:20 2022 +0300

    aghnet: docs again

commit d88da1fc7135f3cd03aff10b02d9957c8ffdfd30
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 19 14:47:36 2022 +0300

    aghnet: imp docs

commit c45dbc7800e882c6c4110aab640c32b03046f89a
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 19 14:41:19 2022 +0300

    aghnet: keep alphabetical order

commit b61781785d096ef43f60fb4f1905a4ed3cdf7c68
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 19 13:50:56 2022 +0300

    aghnet: imp code quality

commit 578dbd71ed2f2089c69343d7d4bf8bbc29150ace
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 12 17:02:38 2022 +0300

    aghnet: imp arp container
This commit is contained in:
Eugene Burkov
2022-04-19 15:01:49 +03:00
committed by Ainar Garipov
parent 723279121a
commit c4a13b92d2
39 changed files with 2111 additions and 510 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
internal/aghnet/systemresolvers_others.go
View File

@@ -24,12 +24,15 @@ func defaultHostGen() (host string) {
// systemResolvers is a default implementation of SystemResolvers interface.
type systemResolvers struct {
resolver *net.Resolver
hostGenFunc HostGenFunc
// addrs is the set that contains cached local resolvers' addresses.
addrs *stringutil.Set
// addrsLock protects addrs.
addrsLock sync.RWMutex
// addrs is the set that contains cached local resolvers' addresses.
addrs *stringutil.Set
// resolver is used to fetch the resolvers' addresses.
resolver *net.Resolver
// hostGenFunc generates hosts to resolve.
hostGenFunc HostGenFunc
}
const (
@@ -44,6 +47,7 @@ const (
errUnexpectedHostFormat errors.Error = "unexpected host format"
)
// refresh implements the SystemResolvers interface for *systemResolvers.
func (sr *systemResolvers) refresh() (err error) {
defer func() { err = errors.Annotate(err, "systemResolvers: %w") }()
@@ -56,7 +60,7 @@ func (sr *systemResolvers) refresh() (err error) {
return err
}
func newSystemResolvers(refreshIvl time.Duration, hostGenFunc HostGenFunc) (sr SystemResolvers) {
func newSystemResolvers(hostGenFunc HostGenFunc) (sr SystemResolvers) {
if hostGenFunc == nil {
hostGenFunc = defaultHostGen
}
@@ -76,19 +80,18 @@ func newSystemResolvers(refreshIvl time.Duration, hostGenFunc HostGenFunc) (sr S
func validateDialedHost(host string) (err error) {
defer func() { err = errors.Annotate(err, "parsing %q: %w", host) }()
var ipStr string
parts := strings.Split(host, "%")
switch len(parts) {
case 1:
ipStr = host
// host
case 2:
// Remove the zone and check the IP address part.
ipStr = parts[0]
host = parts[0]
default:
return errUnexpectedHostFormat
}
if net.ParseIP(ipStr) == nil {
if _, err = netutil.ParseIP(host); err != nil {
return errBadAddrPassed
}