Windows routing table interface (untested).

osnet/WindowsEthernetTap.cpp

@@ -25,8 +25,6 @@
  * LLC. Start here: http://www.zerotier.com/
  */
 
-#include "../Constants.hpp"
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
@@ -42,9 +40,10 @@
 #include <nldef.h>
 #include <netioapi.h>
 
-#include "../EthernetTap.hpp"
+#include "../node/Constants.hpp"
-#include "../Utils.hpp"
+#include "../node/EthernetTap.hpp"
-#include "../Mutex.hpp"
+#include "../node/Utils.hpp"
+#include "../node/Mutex.hpp"
 #include "WindowsEthernetTap.hpp"
 
 #include "..\windows\TapDriver\tap-windows.h"

osnet/WindowsRoutingTable.cpp

@@ -0,0 +1,176 @@
+/*
+ * ZeroTier One - Global Peer to Peer Ethernet
+ * Copyright (C) 2011-2014  ZeroTier Networks LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <WinSock2.h>
+#include <Windows.h>
+#include <netioapi.h>
+#include <IPHlpApi.h>
+
+#include <vector>
+
+#include "../node/Constants.hpp"
+#include "WindowsRoutingTable.hpp"
+
+namespace ZeroTier {
+
+static void _copyInetAddressToSockaddrInet(const InetAddress &a,SOCKADDR_INET &sinet)
+{
+	memset(&sinet,0,sizeof(sinet));
+	if (a.isV4()) {
+		sinet.Ipv4.sin_addr.S_un.S_addr = *((const uint32_t *)a.rawIpData());
+		sinet.Ipv4.sin_family = AF_INET;
+		sinet.Ipv4.sin_port = htons(a.port());
+	} else if (a.isV6()) {
+		memcpy(sinet.Ipv6.sin6_addr.u.Byte,a.rawIpData(),16);
+		sinet.Ipv6.sin6_family = AF_INET6;
+		sinet.Ipv6.sin6_port = htons(a.port());
+	}
+}
+
+WindowsRoutingTable::WindowsRoutingTable()
+{
+}
+
+WindowsRoutingTable::~WindowsRoutingTable()
+{
+}
+
+std::vector<RoutingTable::Entry> WindowsRoutingTable::get(bool includeLinkLocal,bool includeLoopback) const
+{
+	std::vector<RoutingTable::Entry> entries;
+	PMIB_IPFORWARD_TABLE2 rtbl = NULL;
+
+	if (GetIpForwardTable2(AF_UNSPEC,&rtbl) != NO_ERROR)
+		return entries;
+	if (!rtbl)
+		return entries;
+
+	for(ULONG r=0;r<rtbl->NumEntries;++r) {
+		RoutingTable::Entry e;
+		switch(rtbl->Table[r].DestinationPrefix.Prefix.si_family) {
+			case AF_INET:
+				e.destination.set(&(rtbl->Table[r].DestinationPrefix.Prefix.Ipv4.sin_addr.S_un.S_addr),4,rtbl->Table[r].DestinationPrefix.PrefixLength);
+				break;
+			case AF_INET6:
+				e.destination.set(rtbl->Table[r].DestinationPrefix.Prefix.Ipv6.sin6_addr.u.Byte,16,rtbl->Table[r].DestinationPrefix.PrefixLength);
+				break;
+		}
+		switch(rtbl->Table[r].NextHop.si_family) {
+			case AF_INET:
+				e.gateway.set(&(rtbl->Table[r].NextHop.Ipv4.sin_addr.S_un.S_addr),4,0);
+				break;
+			case AF_INET6:
+				e.gateway.set(rtbl->Table[r].NextHop.Ipv6.sin6_addr.u.Byte,16,0);
+				break;
+		}
+		e.deviceIndex = (int)rtbl->Table[r].InterfaceIndex;
+		e.metric = (int)rtbl->Table[r].Metric;
+		ConvertInterfaceLuidToNameA(&(rtbl->Table[r].InterfaceLuid),e.device,sizeof(e.device));
+		if ((e.destination)&&((includeLinkLocal)||(!e.destination.isLinkLocal()))&&((includeLoopback)||((!e.destination.isLoopback())&&(!e.gateway.isLoopback()))))
+			entries.push_back(e);
+	}
+
+	FreeMibTable(rtbl);
+	std::sort(entries.begin(),entries.end());
+	return entries;
+}
+
+RoutingTable::Entry WindowsRoutingTable::set(const InetAddress &destination,const InetAddress &gateway,const char *device,int metric)
+{
+	NET_LUID luid;
+	luid.Value = 0;
+	if (ConvertInterfaceNameToLuidA(device,&luid) != NO_ERROR)
+		return RoutingTable::Entry();
+
+	bool needCreate = true;
+	PMIB_IPFORWARD_TABLE2 rtbl = NULL;
+	if (GetIpForwardTable2(AF_UNSPEC,&rtbl) != NO_ERROR)
+		return RoutingTable::Entry();
+	if (!rtbl)
+		return RoutingTable::Entry();
+	for(ULONG r=0;r<rtbl->NumEntries;++r) {
+		if (rtbl->Table[r].InterfaceLuid.Value == luid.Value) {
+			InetAddress rdest;
+			switch(rtbl->Table[r].DestinationPrefix.Prefix.si_family) {
+				case AF_INET:
+					rdest.set(&(rtbl->Table[r].DestinationPrefix.Prefix.Ipv4.sin_addr.S_un.S_addr),4,rtbl->Table[r].DestinationPrefix.PrefixLength);
+					break;
+				case AF_INET6:
+					rdest.set(rtbl->Table[r].DestinationPrefix.Prefix.Ipv6.sin6_addr.u.Byte,16,rtbl->Table[r].DestinationPrefix.PrefixLength);
+					break;
+			}
+			if (rdest == destination) {
+				if (metric >= 0) {
+					_copyInetAddressToSockaddrInet(gateway,rtbl->Table[r].NextHop);
+					rtbl->Table[r].Metric = metric;
+					SetIpForwardEntry2(&(rtbl->Table[r]));
+					needCreate = false;
+				} else {
+					DeleteIpForwardEntry2(&(rtbl->Table[r]));
+					FreeMibTable(rtbl);
+					return RoutingTable::Entry();
+				}
+			}
+		}
+	}
+	FreeMibTable(rtbl);
+
+	if ((metric >= 0)&&(needCreate)) {
+		MIB_IPFORWARD_ROW2 nr;
+		InitializeIpForwardEntry(&nr);
+		nr.InterfaceLuid.Value = luid.Value;
+		_copyInetAddressToSockaddrInet(destination,nr.DestinationPrefix.Prefix);
+		nr.DestinationPrefix.PrefixLength = destination.netmaskBits();
+		_copyInetAddressToSockaddrInet(gateway,nr.NextHop);
+		nr.Metric = metric;
+		nr.Protocol = MIB_IPPROTO_NETMGMT;
+		CreateIpForwardEntry2(&nr);
+	}
+
+	std::vector<RoutingTable::Entry> rtab(get(true,true));
+	std::vector<RoutingTable::Entry>::iterator bestEntry(rtab.end());
+	for(std::vector<RoutingTable::Entry>::iterator e(rtab.begin());e!=rtab.end();++e) {
+		if ((e->destination == destination)&&(e->gateway.ipsEqual(gateway))) {
+			if ((device)&&(device[0])) {
+				if (!strcmp(device,e->device)) {
+					if (metric == e->metric)
+						bestEntry = e;
+				}
+			}
+			if (bestEntry == rtab.end())
+				bestEntry = e;
+		}
+	}
+	if (bestEntry != rtab.end())
+		return *bestEntry;
+	return RoutingTable::Entry();
+}
+
+} // namespace ZeroTier

osnet/WindowsRoutingTable.hpp

@@ -0,0 +1,49 @@
+/*
+ * ZeroTier One - Global Peer to Peer Ethernet
+ * Copyright (C) 2011-2014  ZeroTier Networks LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#ifndef ZT_WINDOWSROUTINGTABLE_HPP
+#define ZT_WINDOWSROUTINGTABLE_HPP
+
+#include "../node/RoutingTable.hpp"
+
+namespace ZeroTier {
+
+/**
+ * Interface to Microsoft Windows (Vista or newer) routing table
+ */
+class WindowsRoutingTable : public RoutingTable
+{
+public:
+	WindowsRoutingTable();
+	virtual ~WindowsRoutingTable();
+	virtual std::vector<RoutingTable::Entry> get(bool includeLinkLocal = false,bool includeLoopback = false) const;
+	virtual RoutingTable::Entry set(const InetAddress &destination,const InetAddress &gateway,const char *device,int metric);
+};
+
+} // namespace ZeroTier
+
+#endif

windows/ZeroTierOne/ZeroTierOne.vcxproj

@@ -52,6 +52,9 @@
     <ClCompile Include="..\..\node\Topology.cpp" />
     <ClCompile Include="..\..\node\UdpSocket.cpp" />
     <ClCompile Include="..\..\node\Utils.cpp" />
+    <ClCompile Include="..\..\osnet\WindowsEthernetTap.cpp" />
+    <ClCompile Include="..\..\osnet\WindowsEthernetTapFactory.cpp" />
+    <ClCompile Include="..\..\osnet\WindowsRoutingTable.cpp" />
     <ClCompile Include="ServiceBase.cpp" />
     <ClCompile Include="ServiceInstaller.cpp" />
     <ClCompile Include="ZeroTierOneService.cpp" />
@@ -109,6 +112,9 @@
     <ClInclude Include="..\..\node\Topology.hpp" />
     <ClInclude Include="..\..\node\UdpSocket.hpp" />
     <ClInclude Include="..\..\node\Utils.hpp" />
+    <ClInclude Include="..\..\osnet\WindowsEthernetTap.hpp" />
+    <ClInclude Include="..\..\osnet\WindowsEthernetTapFactory.hpp" />
+    <ClInclude Include="..\..\osnet\WindowsRoutingTable.hpp" />
     <ClInclude Include="..\..\version.h" />
     <ClInclude Include="resource.h" />
     <ClInclude Include="ServiceBase.h" />

windows/ZeroTierOne/ZeroTierOne.vcxproj.filters

@@ -123,6 +123,15 @@
     <ClCompile Include="..\..\node\RoutingTable.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\osnet\WindowsEthernetTap.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\osnet\WindowsEthernetTapFactory.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\osnet\WindowsRoutingTable.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\ext\lz4\lz4.h">
@@ -296,6 +305,15 @@
     <ClInclude Include="..\..\node\RoutingTable.hpp">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\osnet\WindowsEthernetTap.hpp">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\osnet\WindowsEthernetTapFactory.hpp">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\osnet\WindowsRoutingTable.hpp">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="ZeroTierOne.rc">