protected string Connect(int port)
{
try
{
m_bufferReceive = "";
m_failedReason = "";
IPAddress ipAddress = IPAddress.Loopback;
IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);
Socket socket = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
connectDone.Reset();
socket.BeginConnect(remoteEP, new AsyncCallback(ConnectCallback), socket);
connectDone.WaitOne();
if (m_socket == null) // Connect failed
{
return("No socket");
}
/*
#if DEBUG
#else
* if(Platform.Instance.CheckElevatedSocketAllowed(socket.RemoteEndPoint as IPEndPoint, socket.LocalEndPoint as IPEndPoint) == false)
* {
* return false;
* }
#endif
*/
StateObject state = new StateObject();
state.Socket = socket;
// Begin receiving the data from the remote device.
socket.BeginReceive(state.Buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state);
m_sessionKey = RandomGenerator.GetHash();
DoCommandSync("session-key", "key", m_sessionKey, "version", Constants.ElevatedVersionExpected);
if (m_failedReason != "")
{
return(m_failedReason);
}
m_started = true;
}
catch (Exception ex)
{
return(ex.Message);
}
return("Ok");
}
public virtual string FileTempName(string partialName)
{
for (int l = 0; ; l++)
{
string path = DirectoryTemp() + DirSep + partialName;
if (l > 0)
{
path += "-" + RandomGenerator.GetHash().Substring(0, 6);
}
if (FileExists(path) == false)
{
return(path);
}
}
}
public virtual void OnLoad(XmlElement xmlStorage)
{
if (xmlStorage != null)
{
Storage.AppendChild(Storage.ImportNode(xmlStorage, true));
}
else
{
Storage.AppendChild(Storage.CreateElement(Code));
}
if (ID == "")
{
ID = RandomGenerator.GetHash();
}
}
public virtual void Start()
{
m_sessionKey = RandomGenerator.GetHash();
string result = DoCommandSync("session-key", "key", m_sessionKey);
if (result != "Version:" + Constants.VersionElevated.ToString())
{
throw new Exception("Unexpected elevated version mismatch, '" + result + "' vs '" + "Version:" + Constants.VersionElevated + "'");
}
m_started = true;
if (m_failedReason != "")
{
throw new Exception(m_failedReason);
}
}
public ConnectionActive BuildConnectionActive(bool preview)
{
// If preview, no physical additional files are created.
ConnectionActive connectionActive = new ConnectionActive();
Storage s = Engine.Instance.Storage;
connectionActive.OpenVpnProfileStartup = new OvpnBuilder();
OvpnBuilder ovpn = connectionActive.OpenVpnProfileStartup;
ovpn.AppendDirective("setenv", "IV_GUI_VER " + Constants.Name + Constants.VersionDesc, "Client level");
if (s.GetBool("openvpn.skip_defaults") == false)
{
ovpn.AppendDirectives(Engine.Instance.Storage.Get("openvpn.directives"), "Client level");
string directivesPath = Engine.Instance.Storage.Get("openvpn.directives.path");
if (directivesPath.Trim() != "")
{
try
{
if (Platform.Instance.FileExists(directivesPath))
{
string text = Platform.Instance.FileContentsReadText(directivesPath);
ovpn.AppendDirectives(text, "Client level");
}
else
{
Engine.Instance.Logs.Log(LogType.Warning, LanguageManager.GetText("FileNotFound", directivesPath));
}
}
catch (Exception ex)
{
Engine.Instance.Logs.Log(LogType.Warning, LanguageManager.GetText("FileErrorRead", directivesPath, ex.Message));
}
}
Provider.OnBuildOvpnDefaults(ovpn);
ovpn.AppendDirectives(OvpnDirectives, "Server level");
if (Path != "")
{
if (Platform.Instance.FileExists(Path))
{
string text = Platform.Instance.FileContentsReadText(Path);
ovpn.AppendDirectives(text, "Config file");
string dirPath = Platform.Instance.FileGetDirectoryPath(Path);
ovpn.NormalizeRelativePath(dirPath);
}
}
}
if (s.Get("openvpn.dev_node") != "")
{
ovpn.AppendDirective("dev-node", s.Get("openvpn.dev_node"), "");
}
if (s.Get("network.entry.iface") != "")
{
ovpn.AppendDirective("local", s.Get("network.entry.iface"), "");
ovpn.RemoveDirective("nobind");
}
else
{
ovpn.RemoveDirective("local");
ovpn.AppendDirective("nobind", "", "");
}
int rcvbuf = s.GetInt("openvpn.rcvbuf");
if (rcvbuf == -2)
{
rcvbuf = Platform.Instance.GetRecommendedRcvBufDirective();
}
if (rcvbuf == -2)
{
rcvbuf = -1;
}
if (rcvbuf != -1)
{
ovpn.AppendDirective("rcvbuf", rcvbuf.ToString(), "");
}
int sndbuf = s.GetInt("openvpn.sndbuf");
if (sndbuf == -2)
{
sndbuf = Platform.Instance.GetRecommendedSndBufDirective();
}
if (sndbuf == -2)
{
sndbuf = -1;
}
if (sndbuf != -1)
{
ovpn.AppendDirective("sndbuf", sndbuf.ToString(), "");
}
string proxyDirectiveName = "";
string proxyDirectiveArgs = "";
string proxyMode = s.GetLower("proxy.mode");
string proxyWhen = s.GetLower("proxy.when");
if ((proxyWhen == "none") || (proxyWhen == "web"))
{
proxyMode = "none";
}
if (proxyMode == "tor")
{
proxyDirectiveName = "socks-proxy";
}
else if (proxyMode == "http")
{
proxyDirectiveName = "http-proxy";
}
else if (proxyMode == "socks")
{
proxyDirectiveName = "socks-proxy";
}
if (proxyDirectiveName != "")
{
proxyDirectiveArgs += s.Get("proxy.host") + " " + s.Get("proxy.port");
if ((s.GetLower("proxy.mode") != "none") && (s.GetLower("proxy.mode") != "tor"))
{
if (s.Get("proxy.auth") != "None")
{
string fileNameAuthOvpn = "";
if (preview)
{
fileNameAuthOvpn = "dummy.ppw";
}
else
{
connectionActive.ProxyAuthFile = new TemporaryFile("ppw");
fileNameAuthOvpn = connectionActive.ProxyAuthFile.Path;
string fileNameData = s.Get("proxy.login") + "\n" + s.Get("proxy.password") + "\n";
Platform.Instance.FileContentsWriteText(connectionActive.ProxyAuthFile.Path, fileNameData, Encoding.Default); // TOFIX: Check if OpenVPN expect UTF-8
Platform.Instance.FileEnsurePermission(connectionActive.ProxyAuthFile.Path, "600");
}
proxyDirectiveArgs += " " + ovpn.EncodePath(fileNameAuthOvpn) + " " + s.Get("proxy.auth").ToLowerInvariant(); // 2.6 Auth Fix
}
}
ovpn.AppendDirective(proxyDirectiveName, proxyDirectiveArgs, "");
}
if (Constants.FeatureIPv6ControlOptions)
{
if (s.GetLower("network.ipv4.mode") == "in")
{
connectionActive.TunnelIPv4 = true;
}
else if (s.GetLower("network.ipv4.mode") == "in-out")
{
if (SupportIPv4)
{
connectionActive.TunnelIPv4 = true;
}
else
{
connectionActive.TunnelIPv4 = false;
}
}
else if (s.GetLower("network.ipv4.mode") == "in-block")
{
if (SupportIPv4)
{
connectionActive.TunnelIPv4 = true;
}
else
{
connectionActive.TunnelIPv4 = false; // Out, but doesn't matter, will be blocked.
}
}
else if (s.GetLower("network.ipv4.mode") == "out")
{
connectionActive.TunnelIPv4 = false;
}
else if (s.GetLower("network.ipv4.mode") == "block")
{
connectionActive.TunnelIPv4 = false; // Out, but doesn't matter, will be blocked.
}
if (Engine.Instance.GetNetworkIPv6Mode() == "in")
{
connectionActive.TunnelIPv6 = true;
}
else if (Engine.Instance.GetNetworkIPv6Mode() == "in-out")
{
if (SupportIPv6)
{
connectionActive.TunnelIPv6 = true;
}
else
{
connectionActive.TunnelIPv6 = false;
}
}
else if (Engine.Instance.GetNetworkIPv6Mode() == "in-block")
{
if (SupportIPv6)
{
connectionActive.TunnelIPv6 = true;
}
else
{
connectionActive.TunnelIPv6 = false;
}
}
else if (Engine.Instance.GetNetworkIPv6Mode() == "out")
{
connectionActive.TunnelIPv6 = false;
}
else if (Engine.Instance.GetNetworkIPv6Mode() == "block")
{
connectionActive.TunnelIPv6 = false;
}
if (Software.GetTool("openvpn").VersionAboveOrEqual("2.4"))
{
ovpn.RemoveDirective("redirect-gateway"); // Remove if exists
ovpn.AppendDirective("pull-filter", "ignore \"redirect-gateway\"", "Forced at client side");
if (connectionActive.TunnelIPv6 == false)
{
ovpn.AppendDirective("pull-filter", "ignore \"dhcp-option DNS6\"", "Client side");
ovpn.AppendDirective("pull-filter", "ignore \"tun-ipv6\"", "Client side");
ovpn.AppendDirective("pull-filter", "ignore \"ifconfig-ipv6\"", "Client side");
}
if ((connectionActive.TunnelIPv4 == false) && (connectionActive.TunnelIPv6 == false))
{
// no redirect-gateway
}
else if ((connectionActive.TunnelIPv4 == true) && (connectionActive.TunnelIPv6 == false))
{
ovpn.AppendDirective("redirect-gateway", "def1 bypass-dhcp", "");
}
else if ((connectionActive.TunnelIPv4 == false) && (connectionActive.TunnelIPv6 == true))
{
ovpn.AppendDirective("redirect-gateway", "ipv6 !ipv4 def1 bypass-dhcp", "");
}
else
{
ovpn.AppendDirective("redirect-gateway", "ipv6 def1 bypass-dhcp", "");
}
}
else
{
// OpenVPN <2.4, IPv6 not supported, IPv4 required.
connectionActive.TunnelIPv4 = true;
connectionActive.TunnelIPv6 = false;
if (connectionActive.TunnelIPv4)
{
ovpn.AppendDirective("redirect-gateway", "def1 bypass-dhcp", "");
}
else
{
ovpn.AppendDirective("route-nopull", "", "For Routes Out");
// 2.9, this is used by Linux resolv-conf DNS method. Need because route-nopull also filter pushed dhcp-option.
// Incorrect with other provider, but the right-approach (pull-filter based) require OpenVPN <2.4.
ovpn.AppendDirective("dhcp-option", "DNS " + Constants.DnsVpn, "");
}
}
}
else
{
string routesDefault = s.Get("routes.default");
connectionActive.TunnelIPv4 = (routesDefault == "in");
connectionActive.TunnelIPv6 = (routesDefault == "in");
if (routesDefault == "out")
{
if (Software.GetTool("openvpn").VersionAboveOrEqual("2.4"))
{
ovpn.RemoveDirective("redirect-gateway"); // Remove if exists
ovpn.AppendDirective("pull-filter", "ignore \"redirect-gateway\"", "For Routes Out");
}
else // Compatibility <2.4
{
ovpn.AppendDirective("route-nopull", "", "For Routes Out");
// For DNS
// < 2.9. route directive useless, and DNS are forced manually in every supported platform. // TOCLEAN
/*
* ovpn += "dhcp-option DNS " + Constants.DnsVpn + "\n"; // Manually because route-nopull skip it
* ovpn += "route 10.4.0.1 255.255.255.255 vpn_gateway # AirDNS\n";
* ovpn += "route 10.5.0.1 255.255.255.255 vpn_gateway # AirDNS\n";
* ovpn += "route 10.6.0.1 255.255.255.255 vpn_gateway # AirDNS\n";
* ovpn += "route 10.7.0.1 255.255.255.255 vpn_gateway # AirDNS\n";
* ovpn += "route 10.8.0.1 255.255.255.255 vpn_gateway # AirDNS\n";
* ovpn += "route 10.9.0.1 255.255.255.255 vpn_gateway # AirDNS\n";
* ovpn += "route 10.30.0.1 255.255.255.255 vpn_gateway # AirDNS\n";
* ovpn += "route 10.50.0.1 255.255.255.255 vpn_gateway # AirDNS\n";
*/
// 2.9, this is used by Linux resolv-conf DNS method. Need because route-nopull also filter pushed dhcp-option.
// Incorrect with other provider, but the right-approach (pull-filter based) require OpenVPN <2.4.
ovpn.AppendDirective("dhcp-option", "DNS " + Constants.DnsVpn, "");
}
}
}
// For Checking
foreach (IpAddress ip in IpsExit.IPs)
{
connectionActive.AddRoute(ip, "vpn_gateway", "For Checking Route");
}
string routes = s.Get("routes.custom");
string[] routes2 = routes.Split(';');
foreach (string route in routes2)
{
string[] routeEntries = route.Split(',');
if (routeEntries.Length != 3)
{
continue;
}
string ipCustomRoute = routeEntries[0];
IpAddresses ipsCustomRoute = new IpAddresses(ipCustomRoute);
if (ipsCustomRoute.Count == 0)
{
Engine.Instance.Logs.Log(LogType.Verbose, LanguageManager.GetText("CustomRouteInvalid", ipCustomRoute.ToString()));
}
else
{
string action = routeEntries[1];
string notes = routeEntries[2];
foreach (IpAddress ip in ipsCustomRoute.IPs)
{
bool layerIn = false;
if (ip.IsV4)
{
layerIn = connectionActive.TunnelIPv4;
}
else if (ip.IsV6)
{
layerIn = connectionActive.TunnelIPv6;
}
string gateway = "";
if ((layerIn == false) && (action == "in"))
{
gateway = "vpn_gateway";
}
if ((layerIn == true) && (action == "out"))
{
gateway = "net_gateway";
}
if (gateway != "")
{
connectionActive.AddRoute(ip, gateway, (notes != "") ? notes.Safe() : ipCustomRoute);
}
}
}
}
if (proxyMode == "tor")
{
if (preview == false)
{
TorControl.SendNEWNYM();
}
IpAddresses torNodeIps = TorControl.GetGuardIps((preview == false));
foreach (IpAddress torNodeIp in torNodeIps.IPs)
{
if (((connectionActive.TunnelIPv4) && (torNodeIp.IsV4)) ||
((connectionActive.TunnelIPv6) && (torNodeIp.IsV6)))
{
connectionActive.AddRoute(torNodeIp, "net_gateway", "Tor Guard");
}
}
}
{
string managementPasswordFile = "dummy.ppw";
if (preview == false)
{
connectionActive.ManagementPassword = RandomGenerator.GetHash();
connectionActive.ManagementPasswordFile = new TemporaryFile("ppw");
managementPasswordFile = connectionActive.ManagementPasswordFile.Path;
Platform.Instance.FileContentsWriteText(managementPasswordFile, connectionActive.ManagementPassword, Encoding.ASCII); // UTF8 not recognized by OpenVPN
Platform.Instance.FileEnsurePermission(managementPasswordFile, "600");
}
ovpn.AppendDirective("management", "127.0.0.1 " + Engine.Instance.Storage.Get("openvpn.management_port") + " " + ovpn.EncodePath(managementPasswordFile), "");
}
// Experimental - Allow identification as Public Network in Windows. Advanced Option?
// ovpn.Append("route-metric 512");
// ovpn.Append("route 0.0.0.0 0.0.0.0");
Provider.OnBuildConnectionActive(this, connectionActive);
Provider.OnBuildConnectionActiveAuth(connectionActive);
Platform.Instance.OnBuildOvpn(ovpn);
ovpn.AppendDirectives(Engine.Instance.Storage.Get("openvpn.custom"), "Custom level");
foreach (ConnectionActiveRoute route in connectionActive.Routes)
{
if ((route.Address.IsV6) || (Constants.FeatureAlwaysBypassOpenvpnRoute))
{
}
else
{
// We never find a better method to manage IPv6 route via OpenVPN, at least <2.4.4
ovpn.AppendDirective("route", route.Address.ToOpenVPN() + " " + route.Gateway, route.Notes.Safe());
}
}
ovpn.Normalize();
return(connectionActive);
}
public TemporaryFile(string group, string extension)
{
Group = group;
Path = Storage.DataPath + Platform.Instance.DirSep + RandomGenerator.GetHash() + ".tmp." + extension;
TemporaryFiles.Add(this);
}
public LogEntry()
{
Id = RandomGenerator.GetHash();
}
public TemporaryFile(string group, string extension)
{
Group = group;
Path = Engine.Instance.Storage.GetPathInData(RandomGenerator.GetHash() + ".tmp." + extension);
TemporaryFiles.Add(this);
}
public void Start()
{
m_command = new ElevatedProcess.Command();
if (Platform.Instance.NeedExecuteOutsideAppPath(ExePath))
{
string tempPathToDelete = Utils.GetTempPath() + "/openvpn-" + RandomGenerator.GetHash();
if (Platform.Instance.FileExists(tempPathToDelete))
{
Platform.Instance.FileDelete(tempPathToDelete);
}
System.IO.File.Copy(ExePath, tempPathToDelete);
ExePath = tempPathToDelete;
DeleteAfterStart = true;
}
if (IsHummingbird)
{
m_command.Parameters["command"] = "hummingbird";
m_command.Parameters["gui-version"] = Constants.Name + Constants.VersionDesc;
}
else
{
m_command.Parameters["command"] = "process_openvpn";
}
m_command.Parameters["path"] = ExePath;
m_command.Parameters["config"] = ConfigPath;
m_command.ExceptionEvent += delegate(ElevatedProcess.Command cmd, string message)
{
StdErr.Write("Error: " + message);
};
m_command.ReceiveEvent += delegate(ElevatedProcess.Command cmd, string data)
{
string feedbackType = data.Substring(0, 6);
string feedbackData = data.Substring(7);
if (feedbackType == "stdout")
{
StdOut.Write(feedbackData);
}
else if (feedbackType == "stderr")
{
StdErr.Write(feedbackData);
}
else if (feedbackType == "procid")
{
m_pid = Conversions.ToInt32(feedbackData);
if (DeleteAfterStart)
{
Platform.Instance.FileDelete(ExePath);
}
}
else if (feedbackType == "return")
{
}
};
m_command.CompleteEvent += delegate(ElevatedProcess.Command cmd)
{
StdOut.Stop();
StdErr.Stop();
if (EndEvent != null)
{
EndEvent();
}
};
m_command.DoASync();
}