51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
package env
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
|
|
"github.com/qdm12/gluetun/internal/configuration/settings"
|
|
)
|
|
|
|
func (s *Source) readDNS() (dns settings.DNS, err error) {
|
|
dns.ServerAddress, err = s.readDNSServerAddress()
|
|
if err != nil {
|
|
return dns, err
|
|
}
|
|
|
|
dns.KeepNameserver, err = envToBoolPtr("DNS_KEEP_NAMESERVER")
|
|
if err != nil {
|
|
return dns, fmt.Errorf("environment variable DNS_KEEP_NAMESERVER: %w", err)
|
|
}
|
|
|
|
dns.DoT, err = s.readDoT()
|
|
if err != nil {
|
|
return dns, fmt.Errorf("DoT settings: %w", err)
|
|
}
|
|
|
|
return dns, nil
|
|
}
|
|
|
|
func (s *Source) readDNSServerAddress() (address net.IP, err error) {
|
|
key, value := s.getEnvWithRetro("DNS_ADDRESS", "DNS_PLAINTEXT_ADDRESS")
|
|
if value == "" {
|
|
return nil, nil
|
|
}
|
|
|
|
address = net.ParseIP(value)
|
|
if address == nil {
|
|
return nil, fmt.Errorf("environment variable %s: %w: %s", key, ErrIPAddressParse, value)
|
|
}
|
|
|
|
// TODO remove in v4
|
|
if !address.Equal(net.IPv4(127, 0, 0, 1)) { //nolint:gomnd
|
|
s.warner.Warn(key + " is set to " + value +
|
|
" so the DNS over TLS (DoT) server will not be used." +
|
|
" The default value changed to 127.0.0.1 so it uses the internal DoT serves." +
|
|
" If the DoT server fails to start, the IPv4 address of the first plaintext DNS server" +
|
|
" corresponding to the first DoT provider chosen is used.")
|
|
}
|
|
|
|
return address, nil
|
|
}
|