private static void SetNetworkDns(DnsProvider dnsProvider)
{
if (!Program.IsAdmin)
{
Program.RunAsAdmin("--network-dns-item " + dnsProvider.Name);
return;
}
try
{
foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
{
if (nic.OperationalStatus != OperationalStatus.Up)
{
continue;
}
IPInterfaceProperties properties = nic.GetIPProperties();
if ((properties.DnsAddresses.Count > 0) && !properties.DnsAddresses[0].IsIPv6SiteLocal)
{
SetNameServer(nic, dnsProvider.Addresses);
}
}
MessageBox.Show("The network DNS servers were set to " + dnsProvider.Name + " successfully.", dnsProvider.Name + " Configured - " + Resources.ServiceName, MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show("Error occured while setting " + dnsProvider.Name + " as network DNS server. " + ex.Message, "Error - " + Resources.ServiceName, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void NetworkDnsMenuSubItem_Click(object sender, EventArgs e)
{
ToolStripMenuItem item = sender as ToolStripMenuItem;
DnsProvider dnsProvider = item.Tag as DnsProvider;
SetNetworkDns(dnsProvider);
}
private void NetworkDnsMenuSubItem_Click(object sender, EventArgs e)
{
ToolStripMenuItem item = sender as ToolStripMenuItem;
DnsProvider dnsProvider = item.Tag as DnsProvider;
try
{
foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
{
if (nic.OperationalStatus != OperationalStatus.Up)
{
continue;
}
IPInterfaceProperties properties = nic.GetIPProperties();
if ((properties.DnsAddresses.Count > 0) && !properties.DnsAddresses[0].IsIPv6SiteLocal)
{
SetNameServer(nic, dnsProvider.Addresses);
}
}
MessageBox.Show("The network DNS servers were set to " + dnsProvider.Name + " successfully.", dnsProvider.Name + " Configured - " + Resources.ServiceName, MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show("Error occured while setting " + dnsProvider.Name + " as network DNS server. " + ex.Message, "Error - " + Resources.ServiceName, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void btnRestoreDefaults_Click(object sender, EventArgs e)
{
_dnsProviders.Clear();
_dnsProviders.AddRange(DnsProvider.GetDefaultProviders());
RefreshDnsProvidersList();
ClearForm();
}
private void btnAddUpdate_Click(object sender, EventArgs e)
{
if (string.IsNullOrWhiteSpace(txtDnsProviderName.Text))
{
MessageBox.Show("Please enter a valid DNS Provider name.", "Missing DNS Provider!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
List <IPAddress> addresses = new List <IPAddress>();
foreach (string item in txtIpv4Addresses.Text.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
{
if (IPAddress.TryParse(item.Trim(), out IPAddress address) && (address.AddressFamily == AddressFamily.InterNetwork))
{
addresses.Add(address);
}
else
{
MessageBox.Show("Please enter a valid IPv4 address.", "Invalid IPv4 Address!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
}
foreach (string item in txtIpv6Addresses.Text.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
{
if (IPAddress.TryParse(item.Trim(), out IPAddress address) && (address.AddressFamily == AddressFamily.InterNetworkV6))
{
addresses.Add(address);
}
else
{
MessageBox.Show("Please enter a valid IPv6 address.", "Invalid IPv6 Address!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
}
if (addresses.Count == 0)
{
MessageBox.Show("Please enter at least one valid DNS provider IP address.", "Missing DNS Provider IP Address!", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
if ((btnAddUpdate.Text != "Add") && (listView1.SelectedItems.Count > 0))
{
ListViewItem selectedItem = listView1.SelectedItems[0];
DnsProvider dnsProvider = selectedItem.Tag as DnsProvider;
dnsProvider.Name = txtDnsProviderName.Text.Trim();
dnsProvider.Addresses = addresses;
}
else
{
_dnsProviders.Add(new DnsProvider(txtDnsProviderName.Text.Trim(), addresses));
}
RefreshDnsProvidersList();
ClearForm();
}
private void btnDelete_Click(object sender, EventArgs e)
{
if (listView1.SelectedItems.Count > 0)
{
ListViewItem selectedItem = listView1.SelectedItems[0];
DnsProvider dnsProvider = selectedItem.Tag as DnsProvider;
_dnsProviders.Remove(dnsProvider);
listView1.Items.Remove(selectedItem);
}
RefreshDnsProvidersList();
ClearForm();
}
private void LoadConfig()
{
try
{
using (FileStream fS = new FileStream(_configFile, FileMode.Open, FileAccess.Read))
{
BinaryReader bR = new BinaryReader(fS);
if (Encoding.ASCII.GetString(bR.ReadBytes(2)) != "DT")
{
throw new InvalidDataException("Invalid DNS Server System Tray App config file format.");
}
switch (bR.ReadByte())
{
case 1:
int count = bR.ReadInt32();
_dnsProviders.Clear();
for (int i = 0; i < count; i++)
{
_dnsProviders.Add(new DnsProvider(bR));
}
_dnsProviders.Sort();
break;
default:
throw new NotSupportedException("DNS Server System Tray App config file format is not supported.");
}
}
}
catch (FileNotFoundException)
{
_dnsProviders.Clear();
_dnsProviders.AddRange(DnsProvider.GetDefaultProviders());
_dnsProviders.Sort();
}
catch (Exception ex)
{
MessageBox.Show("Error occured while loading config file. " + ex.Message, "Error - " + Resources.ServiceName, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}