// Handles the whole task of making sure the NICs are still
// set to the correct settings once they have been initially set
public static bool EnsureNICsState(IP_CHOICES Choice)
{
try
{
// Handles first run and all that
SaveCurNICSettings();
List<NetworkInterface> ResetNICs = TestNICs(Choice);
// Reset the offenders
foreach (NetworkInterface NIC in ResetNICs)
{
switch (Choice)
{
case IP_CHOICES.DEFAULT:
SetDNSDefault(NIC);
break;
case IP_CHOICES.LOCALHOST:
SetDNSProxy(NIC);
break;
case IP_CHOICES.OPENDNS:
SetDNSOpenDNS(NIC);
break;
}
}
}
catch (Exception Ex)
{
string sMsg = Ex.Message;
return false;
}
return true;
}
static void SetNICs(IP_CHOICES Choice)
{
NetworkInterface[] NICs = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface NIC in NICs)
{
// Only full NICs we care about
if (!IsReceiveOnly(NIC))
{
IPInterfaceProperties IPProps = NIC.GetIPProperties();
IPAddressCollection ipCollDNS = IPProps.DnsAddresses;
foreach (IPAddress Addr in ipCollDNS)
{
switch (Choice)
{
case IP_CHOICES.DEFAULT:
SetDNSDefault(NIC);
break;
case IP_CHOICES.LOCALHOST:
SetDNSProxy(NIC);
break;
case IP_CHOICES.OPENDNS:
SetDNSOpenDNS(NIC);
break;
case IP_CHOICES.FORCE_AUTO:
ForceDNSDefault(NIC);
break;
}
}
}
}
}
// Tests all NICs for current DNS settings, and returns a list not matching
// the input state
static List <NetworkInterface> TestNICs(IP_CHOICES Choice)
{
List <NetworkInterface> ResetNICs = new List <NetworkInterface>();
NetworkInterface[] NICs = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface NIC in NICs)
{
// Only full NICs we care about
if (!IsReceiveOnly(NIC))
{
IPInterfaceProperties IPProps = NIC.GetIPProperties();
IPAddressCollection ipCollDNS = IPProps.DnsAddresses;
if (NIC.OperationalStatus != OperationalStatus.Up)
{
continue;
}
foreach (IPAddress Addr in ipCollDNS)
{
if (Addr.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
{
continue;
}
switch (Choice)
{
case IP_CHOICES.DEFAULT:
if (Addr.ToString() != "")
{
ResetNICs.Add(NIC);
}
break;
case IP_CHOICES.LOCALHOST:
if (Addr.ToString() != "127.0.0.1")
{
ResetNICs.Add(NIC);
}
break;
case IP_CHOICES.OPENDNS:
if ((Addr.ToString() != "208.67.220.220") && (Addr.ToString() != "208.67.222.222"))
{
ResetNICs.Add(NIC);
}
break;
}
}
}
}
return(ResetNICs);
}
// Sets every NIC possible to point to the DNS server of our choice
public static bool SetDNSServer(IP_CHOICES Choice)
{
try
{
SetNICs(Choice);
}
catch (Exception Ex)
{
string sMsg = Ex.Message;
return(false);
}
return(true);
}
// Sets every NIC possible to point to the DNS server of our choice
public static bool SetDNSServer(IP_CHOICES Choice)
{
try
{
SetNICs(Choice);
}
catch (Exception Ex)
{
string sMsg = Ex.Message;
return false;
}
return true;
}
// Handles the whole task of making sure the NICs are still
// set to the correct settings once they have been initially set
public static bool EnsureNICsState(IP_CHOICES Choice)
{
try
{
// Handles first run and all that
SaveCurNICSettings();
List <NetworkInterface> ResetNICs = TestNICs(Choice);
// Reset the offenders
foreach (NetworkInterface NIC in ResetNICs)
{
switch (Choice)
{
case IP_CHOICES.DEFAULT:
SetDNSDefault(NIC);
break;
case IP_CHOICES.LOCALHOST:
SetDNSProxy(NIC);
break;
case IP_CHOICES.OPENDNS:
SetDNSOpenDNS(NIC);
break;
}
}
}
catch (Exception Ex)
{
string sMsg = Ex.Message;
return(false);
}
return(true);
}
// Tests all NICs for current DNS settings, and returns a list not matching
// the input state
static List<NetworkInterface> TestNICs(IP_CHOICES Choice)
{
List<NetworkInterface> ResetNICs = new List<NetworkInterface>();
NetworkInterface[] NICs = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface NIC in NICs)
{
// Only full NICs we care about
if (!IsReceiveOnly(NIC))
{
IPInterfaceProperties IPProps = NIC.GetIPProperties();
IPAddressCollection ipCollDNS = IPProps.DnsAddresses;
if (NIC.OperationalStatus != OperationalStatus.Up)
continue;
foreach (IPAddress Addr in ipCollDNS)
{
if (Addr.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
continue;
switch (Choice)
{
case IP_CHOICES.DEFAULT:
if (Addr.ToString() != "")
{
ResetNICs.Add(NIC);
}
break;
case IP_CHOICES.LOCALHOST:
if (Addr.ToString() != "127.0.0.1")
{
ResetNICs.Add(NIC);
}
break;
case IP_CHOICES.OPENDNS:
if ((Addr.ToString() != "208.67.220.220") && (Addr.ToString() != "208.67.222.222"))
{
ResetNICs.Add(NIC);
}
break;
}
}
}
}
return ResetNICs;
}
static void SetNICs(IP_CHOICES Choice)
{
NetworkInterface[] NICs = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface NIC in NICs)
{
// Only full NICs we care about
if (!IsReceiveOnly(NIC))
{
IPInterfaceProperties IPProps = NIC.GetIPProperties();
IPAddressCollection ipCollDNS = IPProps.DnsAddresses;
foreach (IPAddress Addr in ipCollDNS)
{
switch (Choice)
{
case IP_CHOICES.DEFAULT:
SetDNSDefault(NIC);
break;
case IP_CHOICES.LOCALHOST:
SetDNSProxy(NIC);
break;
case IP_CHOICES.OPENDNS:
SetDNSOpenDNS(NIC);
break;
case IP_CHOICES.FORCE_AUTO:
ForceDNSDefault(NIC);
break;
}
}
}
}
}
