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Pull request:* all: fix all staticcheck simplification and unused warnings

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Merge in DNS/adguard-home from 2270-fix-s-u-warnings to master

Squashed commit of the following:

commit 03e0f78bd471057007c2d4042ee26eda2bbc9b29
Merge: 50dc3ef5c 7e16fda57
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Fri Nov 6 11:54:09 2020 +0300

    Merge branch 'master' into 2270-fix-s-u-warnings

commit 50dc3ef5c44a5fdc941794c26784b0c44d7b5aa0
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Thu Nov 5 19:48:54 2020 +0300

    * all: improve code quality

commit d6d804f759ce3e47154a389b427550e72c4b9090
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Thu Nov 5 18:03:35 2020 +0300

    * all: fix all staticcheck simplification and unused warnings

    Closes #2270.
This commit is contained in:
Eugene Burkov
2020-11-06 12:15:08 +03:00
parent 7e16fda57b
commit 3e1f922252
24 changed files with 159 additions and 210 deletions
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34
internal/util/auto_hosts.go
View File

@@ -59,7 +59,7 @@ func (a *AutoHosts) Init(hostsFn string) {
a.hostsFn = hostsFn
}
if IsOpenWrt() {
if IsOpenWRT() {
a.hostsDirs = append(a.hostsDirs, "/tmp/hosts") // OpenWRT: "/tmp/hosts/dhcp.cfg01411c"
}
@@ -106,8 +106,8 @@ func (a *AutoHosts) Close() {
}
}
// Process - get the list of IP addresses for the hostname
// Return nil if not found
// Process returns the list of IP addresses for the hostname or nil if nothing
// found.
func (a *AutoHosts) Process(host string, qtype uint16) []net.IP {
if qtype == dns.TypePTR {
return nil
@@ -115,11 +115,12 @@ func (a *AutoHosts) Process(host string, qtype uint16) []net.IP {
var ipsCopy []net.IP
a.lock.Lock()
ips, _ := a.table[host]
if len(ips) != 0 {
if ips, ok := a.table[host]; ok {
ipsCopy = make([]net.IP, len(ips))
copy(ipsCopy, ips)
}
a.lock.Unlock()
log.Debug("AutoHosts: answer: %s -> %v", host, ipsCopy)
@@ -256,18 +257,16 @@ func (a *AutoHosts) load(table map[string][]net.IP, tableRev map[string]string,
func (a *AutoHosts) watcherLoop() {
for {
select {
case event, ok := <-a.watcher.Events:
if !ok {
return
}
// skip duplicate events
repeat := true
for repeat {
select {
case _ = <-a.watcher.Events:
// skip this event
case <-a.watcher.Events:
// Skip this duplicating event
default:
repeat = false
}
@@ -292,18 +291,15 @@ func (a *AutoHosts) watcherLoop() {
}
}
// updateLoop - read static hosts from system files
// updateLoop reads static hosts from system files.
func (a *AutoHosts) updateLoop() {
for {
select {
case ok := <-a.updateChan:
if !ok {
log.Debug("Finished AutoHosts update loop")
return
}
a.updateHosts()
for ok := range a.updateChan {
if !ok {
log.Debug("Finished AutoHosts update loop")
return
}
a.updateHosts()
}
}