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Pull request: 2846 cover aghnet vol.4

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Merge in DNS/adguard-home from 2846-cover-aghnet-vol.4 to master

Updates .

Squashed commit of the following:

commit 576ef857628a403ce1478c10a4aad23985c09613
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Mar 31 19:38:57 2022 +0300

    aghnet: imp code

commit 5b4b17ff52867aaab2c9d30a0fc7fc2fe31ff4d5
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Mar 31 14:58:34 2022 +0300

    aghnet: imp coverage
This commit is contained in:
Eugene Burkov 2022-03-31 19:56:50 +03:00
parent a79b61aac3
commit c70f941bf8
15 changed files with 266 additions and 207 deletions
internal/home
home.go

37
internal/home/home.go
View file

@ -517,27 +517,15 @@ func StartMods() error {
func checkPermissions() {
log.Info("Checking if AdGuard Home has necessary permissions")
if runtime.GOOS == "windows" {
// On Windows we need to have admin rights to run properly
admin, _ := aghos.HaveAdminRights()
if admin {
return
}
if ok, err := aghnet.CanBindPrivilegedPorts(); !ok || err != nil {
log.Fatal("This is the first launch of AdGuard Home. You must run it as Administrator.")
}
// We should check if AdGuard Home is able to bind to port 53
ok, err := aghnet.CanBindPort(53)
if ok {
log.Info("AdGuard Home can bind to port 53")
return
}
if errors.Is(err, os.ErrPermission) {
msg := `Permission check failed.
err := aghnet.CheckPort("tcp", net.IP{127, 0, 0, 1}, defaultPortDNS)
if err != nil {
if errors.Is(err, os.ErrPermission) {
log.Fatal(`Permission check failed.
AdGuard Home is not allowed to bind to privileged ports (for instance, port 53).
Please note, that this is crucial for a server to be able to use privileged ports.
@ -545,16 +533,17 @@ Please note, that this is crucial for a server to be able to use privileged port
You have two options:
1. Run AdGuard Home with root privileges
2. On Linux you can grant the CAP_NET_BIND_SERVICE capability:
https://github.com/AdguardTeam/AdGuardHome/wiki/Getting-Started#running-without-superuser`
https://github.com/AdguardTeam/AdGuardHome/wiki/Getting-Started#running-without-superuser`)
}
log.Fatal(msg)
log.Info(
"AdGuard failed to bind to port 53: %s\n\n"+
"Please note, that this is crucial for a DNS server to be able to use that port.",
err,
)
}
msg := fmt.Sprintf(`AdGuard failed to bind to port 53 due to %v
Please note, that this is crucial for a DNS server to be able to use that port.`, err)
log.Info(msg)
log.Info("AdGuard Home can bind to port 53")
}
// Write PID to a file