internal static int Add(AddConfig !config)
{
DebugStub.Break();
if (config.servers == null)
{
Console.WriteLine("no servers given");
return(-1);
}
DNSContract.Imp dnsConn = ((!)config.dnsRef).Acquire();
if (dnsConn == null)
{
Console.WriteLine("Could not initialize DNS endpoint.");
delete dnsConn;
return(1);
}
dnsConn.RecvReady();
for (int i = 0; i < config.servers.Length; i++)
{
IPv4 resolver;
Console.WriteLine("Resolving {0}", config.servers[i]);
if (IPv4.Parse(config.servers[i], out resolver) == false)
{
Console.WriteLine("Invalid IP address: {0}", config.servers[i]);
}
dnsConn.SendAddNameServer((uint)resolver);
dnsConn.RecvAck();
}
delete dnsConn;
return(0);
}
internal static int Add(AddConfig !config)
{
IPv4 gateway;
RoutingContract.Imp routeConn = ((!)config.routingRef).Acquire();
if (routeConn == null)
{
Console.WriteLine("Could not initialize routing endpoint.");
return(1);
}
routeConn.RecvReady();
if (IPv4.Parse(config.gateway, out gateway) == false)
{
Console.WriteLine("Could not parse gateway address.");
delete routeConn;
return(-1);
}
try {
// NOTE: for some reason the compiler doesn't
// realize that ifaddr will definitely be assigned if
// we survive the if/switch-receive sequence. Work
// around that by initializing.
IPv4 ifaddr = new IPv4(0);
if (config.ifAddress == null)
{
routeConn.SendFindHostRoute((uint)gateway);
switch receive {
case routeConn.Route(RouteEntry r):
ifaddr = new IPv4(r.ifaddr);
break;
case routeConn.NoRouteFound():
Console.WriteLine("No route to gateway.");
delete routeConn;
return(-1);
break;
case routeConn.ChannelClosed():
Console.WriteLine("routeConn channel closed.");
throw new Exception("routeConn channel closed.");
}
}
else if (IPv4.Parse(config.ifAddress, out ifaddr) == false)
{
Console.WriteLine("Could not parse interface address.");
delete routeConn;
return(-1);
}
IPContract.Imp ipConn = ((!)config.ipRef).Acquire();
if (ipConn == null)
{
Console.WriteLine("Could not initialize IP endpoint.");
delete routeConn;
return(-1);
}
try {
bool isLocal;
ipConn.SendIsLocalAddress((uint)ifaddr);
ipConn.RecvIsLocal(out isLocal);
if (!isLocal)
{
Console.WriteLine("Proposed interface address is not bound to an interface.");
delete routeConn;
return(-1);
}
}
finally {
delete ipConn;
ipConn = null;
}
IPv4Network destination;
if (IPv4Network.Parse(config.destination, out destination) == false)
{
Console.WriteLine("Could not parse destination address.");
delete routeConn;
return(-1);
}
NetStack.Contracts.Network nwrk = new NetStack.Contracts.Network();
nwrk.network = (uint)destination.Network;
nwrk.netmask = (uint)destination.NetMask;
routeConn.SendAddRoute(nwrk, (uint)gateway, (uint)ifaddr);
switch receive {
case routeConn.Err():
Console.WriteLine("Route could not be added -- it may already exist.");
break;
case routeConn.OK():
Console.WriteLine("Route added successfully");
break;
case routeConn.ChannelClosed():
throw new Exception("routeConn channel closed");
}
}
catch (Exception e) {
Console.WriteLine("Exception: {0}", e);
}
delete routeConn;
return(0);
}
