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cherry-pick: 3142 swap arp and rdns priority

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Merge in DNS/adguard-home from 3142-fix-clients to master

Updates #3142.
Updates #3597.

Squashed commit of the following:

commit 4dcabedbfb1a4e4a0aaba588f708e4625442fce8
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Mar 22 15:13:15 2022 +0300

    all: imp log of changes

commit 481088d05eecac1109daf378e0b4d5f6b2cf099b
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Mar 22 14:36:44 2022 +0300

    all: swap arp and rdns priority
This commit is contained in:
Eugene Burkov 2022-03-22 15:21:03 +03:00 committed by Ainar Garipov
parent c4a13b92d2
commit ba0cf5739b
3 changed files with 8 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
internal/dnsforward/dnsforward.go
View file

@ -314,7 +314,7 @@ func (s *Server) Exchange(ip net.IP) (host string, err error) {
StartTime: time.Now(),
}
resolver := s.internalProxy
var resolver *proxy.Proxy
if s.subnetDetector.IsLocallyServedNetwork(ip) {
if !s.conf.UsePrivateRDNS {
return "", nil
@ -322,6 +322,8 @@ func (s *Server) Exchange(ip net.IP) (host string, err error) {
resolver = s.localResolvers
s.recDetector.add(*req)
} else {
resolver = s.internalProxy
}
if err = resolver.Resolve(ctx); err != nil {

6
internal/home/clients.go
View file

@ -56,8 +56,8 @@ type clientSource uint
// Client sources. The order determines the priority.
const (
ClientSourceWHOIS clientSource = iota
ClientSourceRDNS
ClientSourceARP
ClientSourceRDNS
ClientSourceDHCP
ClientSourceHostsFile
)
@ -721,9 +721,7 @@ func (clients *clientsContainer) AddHost(ip net.IP, host string, src clientSourc
clients.lock.Lock()
defer clients.lock.Unlock()
ok = clients.addHostLocked(ip, host, src)
return ok, nil
return clients.addHostLocked(ip, host, src), nil
}
// addHostLocked adds a new IP-hostname pairing. For internal use only.

8
internal/home/rdns.go
View file

@ -124,14 +124,12 @@ func (r *RDNS) workerLoop() {
log.Debug("rdns: resolving %q: %s", ip, err)
continue
}
if host == "" {
} else if host == "" {
continue
}
// Don't handle any errors since AddHost doesn't return non-nil
// errors for now.
// Don't handle any errors since AddHost doesn't return non-nil errors
// for now.
_, _ = r.clients.AddHost(ip, host, ClientSourceRDNS)
}
}