Windows Ethernet tap refactoring complete.

1 files changed, 170 insertions, 0 deletions

diff --git a/osnet/WindowsEthernetTapFactory.cpp b/osnet/WindowsEthernetTapFactory.cpp
index e69de29b..6564e186 100644
--- a/osnet/WindowsEthernetTapFactory.cpp
+++ b/osnet/WindowsEthernetTapFactory.cpp
@@ -0,0 +1,170 @@
+/*
+ * 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 "WindowsEthernetTapFactory.hpp"
+#include "WindowsEthernetTap.hpp"
+
+namespace ZeroTier {
+
+WindowsEthernetTapFactory::Env::Env()
+{
+#ifdef _WIN64
+	is64Bit = TRUE;
+	devcon = "\\devcon_x64.exe";
+	tapDriver = "\\tap-windows\\x64\\zttap200.inf";
+#else
+	is64Bit = FALSE;
+	IsWow64Process(GetCurrentProcess(),&is64Bit);
+	devcon = ((is64Bit == TRUE) ? "\\devcon_x64.exe" : "\\devcon_x86.exe");
+	tapDriver = ((is64Bit == TRUE) ? "\\tap-windows\\x64\\zttap200.inf" : "\\tap-windows\\x86\\zttap200.inf");
+#endif
+}
+
+WindowsEthernetTapFactory::WindowsEthernetTapFactory(const char *pathToHelpers) :
+	_pathToHelpers(pathToHelpers)
+{
+}
+
+WindowsEthernetTapFactory::~WindowsEthernetTapFactory()
+{
+	Mutex::Lock _l(_devices_m);
+	for(std::vector<EthernetTap *>::iterator d(_devices.begin());d!=_devices.end();++d)
+		delete *d;
+}
+
+EthernetTap *WindowsEthernetTapFactory::open(
+	const MAC &mac,
+	unsigned int mtu,
+	unsigned int metric,
+	uint64_t nwid,
+	const char *desiredDevice,
+	const char *friendlyName,
+	void (*handler)(void *,const MAC &,const MAC &,unsigned int,const Buffer<4096> &),
+	void *arg)
+{
+	Mutex::Lock _l(_devices_m);
+	EthernetTap *t = new WindowsEthernetTap(_pathToHelpers.c_str(),mac,mtu,metric,nwid,desiredDevice,friendlyName,handler,arg);
+	_devices.push_back(t);
+	return t;
+}
+
+void WindowsEthernetTapFactory::close(EthernetTap *tap,bool destroyPersistentDevices)
+{
+	std::string instanceId(((WindowsEthernetTap *)tap)->instanceId());
+	Mutex::Lock _l(_devices_m);
+
+	for(std::vector<EthernetTap *>::iterator d(_devices.begin());d!=_devices.end();++d) {
+		if (*d == tap) {
+			_devices.erase(d);
+			break;
+		}
+	}
+
+	delete tap;
+
+	if (destroyPersistentDevices)
+		_deletePersistentTapDevice(_pathToHelpers.c_str(),instanceId.c_str());
+}
+
+void WindowsEthernetTapFactory::destroyAllPersistentTapDevices(const char *pathToHelpers)
+{
+	char subkeyName[4096];
+	char subkeyClass[4096];
+	char data[4096];
+
+	std::set<std::string> instanceIdPathsToRemove;
+	{
+		HKEY nwAdapters;
+		if (RegOpenKeyExA(HKEY_LOCAL_MACHINE,"SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}",0,KEY_READ|KEY_WRITE,&nwAdapters) != ERROR_SUCCESS)
+			return;
+
+		for(DWORD subkeyIndex=0;;++subkeyIndex) {
+			DWORD type;
+			DWORD dataLen;
+			DWORD subkeyNameLen = sizeof(subkeyName);
+			DWORD subkeyClassLen = sizeof(subkeyClass);
+			FILETIME lastWriteTime;
+			if (RegEnumKeyExA(nwAdapters,subkeyIndex,subkeyName,&subkeyNameLen,(DWORD *)0,subkeyClass,&subkeyClassLen,&lastWriteTime) == ERROR_SUCCESS) {
+				type = 0;
+				dataLen = sizeof(data);
+				if (RegGetValueA(nwAdapters,subkeyName,"ComponentId",RRF_RT_ANY,&type,(PVOID)data,&dataLen) == ERROR_SUCCESS) {
+					data[dataLen] = '\0';
+					if (!strnicmp(data,"zttap",5)) {
+						std::string instanceIdPath;
+						type = 0;
+						dataLen = sizeof(data);
+						if (RegGetValueA(nwAdapters,subkeyName,"DeviceInstanceID",RRF_RT_ANY,&type,(PVOID)data,&dataLen) == ERROR_SUCCESS)
+							instanceIdPath.assign(data,dataLen);
+						if (instanceIdPath.length() != 0) {
+							instanceIdPathsToRemove.insert(instanceIdPath);
+							/*
+							type = 0;
+							dataLen = sizeof(data);
+							if (RegGetValueA(nwAdapters,subkeyName,"_ZeroTierTapIdentifier",RRF_RT_ANY,&type,(PVOID)data,&dataLen) == ERROR_SUCCESS) {
+								if (dataLen <= 0) {
+									instanceIdPathsToRemove.insert(instanceIdPath);
+								} else {
+									instanceIdPathsToRemove.insert(instanceIdPath);
+								}
+							}
+							*/
+						}
+					}
+				}
+			} else break; // end of list or failure
+		}
+
+		RegCloseKey(nwAdapters);
+	}
+
+	for(std::set<std::string>::iterator iidp(instanceIdPathsToRemove.begin());iidp!=instanceIdPathsToRemove.end();++iidp)
+		_deletePersistentTapDevice(pathToHelpers,iidp->c_str());
+}
+
+void WindowsEthernetTapFactory::_deletePersistentTapDevice(const char *pathToHelpers,const char *instanceId)
+{
+	HANDLE devconLog = CreateFileA((std::string(pathToHelpers) + "\\devcon.log").c_str(),GENERIC_WRITE,FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
+	STARTUPINFOA startupInfo;
+	startupInfo.cb = sizeof(startupInfo);
+	if (devconLog != INVALID_HANDLE_VALUE) {
+		SetFilePointer(devconLog,0,0,FILE_END);
+		startupInfo.hStdOutput = devconLog;
+		startupInfo.hStdError = devconLog;
+	}
+	PROCESS_INFORMATION processInfo;
+	memset(&startupInfo,0,sizeof(STARTUPINFOA));
+	memset(&processInfo,0,sizeof(PROCESS_INFORMATION));
+	if (CreateProcessA(NULL,(LPSTR)(std::string("\"") + pathToHelpers + WINENV.devcon + "\" remove @" + instanceId).c_str(),NULL,NULL,FALSE,0,NULL,NULL,&startupInfo,&processInfo)) {
+		WaitForSingleObject(processInfo.hProcess,INFINITE);
+		CloseHandle(processInfo.hProcess);
+		CloseHandle(processInfo.hThread);
+	}
+	if (devconLog != INVALID_HANDLE_VALUE)
+		CloseHandle(devconLog);
+}
+
+} // namespace ZeroTier