Major plugin refactor and cleanup.

Switched to POCO library for unified platform/library interface.
Deprecated the external module API. It was creating more problems than solving.
Removed most built-in libraries in favor of system libraries for easier maintenance.
Cleaned and secured code with help from static analyzers.

vendor/POCO/Net/samples/ifconfig/src/ifconfig.cpp

@@ -0,0 +1,138 @@
+//
+// ifconfig.cpp
+//
+// This sample demonstrates the (display only) ifconfig-like capabilities
+// of the NetworkInterface class (on platforms where it is supported).
+//
+// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/Net/NetworkInterface.h"
+#include <iostream>
+
+
+#ifdef POCO_NET_HAS_INTERFACE
+
+
+#include "Poco/Path.h"
+#include "Poco/Exception.h"
+#include "Poco/Net/IPAddress.h"
+#include <memory>
+
+
+using Poco::Path;
+using Poco::Exception;
+using Poco::Net::IPAddress;
+using Poco::Net::NetworkInterface;
+
+
+int main(int argc, char** argv)
+{
+	try
+	{
+		const NetworkInterface::Map map = NetworkInterface::map();
+		for ( NetworkInterface::Map::const_iterator it = map.begin();
+		it != map.end(); ++it)
+		{
+			const NetworkInterface& intf = it->second;
+			std::string sep("");
+			std::cout << intf.name() << " [" << intf.index() << "]: ";
+			std::cout << "<";
+			if (intf.isUp())
+			{
+				std::cout << sep << "UP";
+				sep = ",";
+			}
+
+			if (intf.isRunning())
+			{
+				std::cout << sep << "RUNNING";
+				sep = ",";
+			}
+
+			if (intf.isLoopback())
+			{
+				std::cout << sep << "LOOPBACK";
+				sep = ",";
+			}
+
+			if (intf.isPointToPoint())
+			{
+				std::cout << sep << "P2P";
+				sep = ",";
+			}
+
+			if (intf.supportsIPv4())
+			{
+				std::cout << sep << "IPv4";
+				sep = ",";
+			}
+
+			if (intf.supportsIPv6())
+			{
+				std::cout << sep << "IPv6";
+				sep = ",";
+			}
+
+			if (intf.supportsBroadcast())
+			{
+				std::cout << sep << "BCAST";
+				sep = ",";
+			}
+
+			if (intf.supportsMulticast())
+			{
+				std::cout << sep << "MCAST";
+				sep = ",";
+			}
+
+			if (!intf.isLoopback())
+			{
+				std::cout << sep << std::dec << intf.mtu();
+				sep = ",";
+			}
+
+			std::cout << ">" << std::endl;
+
+			const NetworkInterface::AddressList& ipList = intf.addressList();
+
+			NetworkInterface::AddressList::const_iterator ipIt = ipList.begin();
+			NetworkInterface::AddressList::const_iterator ipEnd = ipList.end();
+			for (; ipIt != ipEnd; ++ipIt)
+			{
+				std::cout << "  " << ipIt->get<NetworkInterface::IP_ADDRESS>().toString();
+				IPAddress addr;
+				addr = ipIt->get<NetworkInterface::SUBNET_MASK>();
+				if (!addr.isWildcard()) std::cout << '/' << addr.toString() << " (" << addr.prefixLength() << ')';
+				addr = ipIt->get<NetworkInterface::BROADCAST_ADDRESS>();
+				if (!addr.isWildcard()) std::cout << (intf.isPointToPoint() ? "  dest  " : "  bcast  ") << addr.toString();
+				std::cout << std::endl;
+			}
+			std::cout << std::endl;
+		}
+	}
+	catch (Exception& exc)
+	{
+		std::cerr << exc.displayText() << std::endl;
+		return 1;
+	}
+
+	return 0;
+}
+
+
+#else // POCO_NET_HAS_INTERFACE
+
+
+int main(int argc, char** argv)
+{
+	std::cout << "NetworkInterface not supported on this platform." << std::endl;
+	return 0;
+}
+
+
+#endif // POCO_NET_HAS_INTERFACE