github.com/mysteriumnetwork/node@v0.0.0-20240516044423-365054f76801/services/wireguard/connection/dns/dns_windows.go (about)

     1  /*
     2   * Copyright (C) 2020 The "MysteriumNetwork/node" Authors.
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License as published by
     6   * the Free Software Foundation, either version 3 of the License, or
     7   * (at your option) any later version.
     8   *
     9   * This program is distributed in the hope that it will be useful,
    10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12   * GNU General Public License for more details.
    13   *
    14   * You should have received a copy of the GNU General Public License
    15   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    16   */
    17  
    18  package dns
    19  
    20  import (
    21  	"fmt"
    22  	"os/exec"
    23  )
    24  
    25  func setDNS(cfg Config) error {
    26  	cmd := fmt.Sprintf("netsh interface ipv4 set dnsservers name=%s source=static address=%s validate=no", cfg.IfaceName, cfg.DNS[0])
    27  	out, err := exec.Command("powershell", "-Command", cmd).CombinedOutput()
    28  	if err != nil {
    29  		return fmt.Errorf("could not configure DNS, %s:%v", string(out), err)
    30  	}
    31  	return nil
    32  }
    33  
    34  func cleanDNS(cfg Config) error {
    35  	cmd := fmt.Sprintf("netsh interface ipv4 set dnsservers name=%s source=static address=none validate=no register=both", cfg.IfaceName)
    36  	out, err := exec.Command("powershell", "-Command", cmd).CombinedOutput()
    37  	if err != nil {
    38  		return fmt.Errorf("could not clean DNS, %s:%w", string(out), err)
    39  	}
    40  	return nil
    41  }