private IDataAdapter ConnectUdp(IpProxyToken token, Logger logger, PropertyBag properties)
{
IDataAdapter adapter = null;
try
{
UdpClient client = new UdpClient(IsTokenIpV6(token) ? AddressFamily.InterNetworkV6 : AddressFamily.InterNetwork);
if (token.Hostname == null)
{
client.Connect(token.Address, token.Port);
}
else
{
client.Connect(token.Hostname, token.Port);
}
NetUtils.PopulateBagFromSocket(client.Client, properties);
adapter = new UdpClientDataAdapter(client, IpProxyClient.GetDescription(token));
}
catch (SocketException ex)
{
logger.LogException(ex);
token.Status = NetStatusCodes.ConnectFailure;
}
catch (IOException ex)
{
logger.LogException(ex);
token.Status = NetStatusCodes.ConnectFailure;
}
return(adapter);
}
/// <summary>
/// Connect the client
/// </summary>
/// <param name="token">The proxy token</param>
/// <param name="logger">The proxy logger instance</param>
/// <param name="meta">The proxy meta data</param>
/// <param name="globalMeta">The proxy global meta data</param>
/// <param name="properties">The proxy property bag</param>
/// <returns>The connected adapter</returns>
public override IDataAdapter Connect(ProxyToken token, Logger logger, MetaDictionary meta, MetaDictionary globalMeta, PropertyBag properties)
{
IDataAdapter ret = null;
for (int i = 0; i < _clients.Length; ++i)
{
ret = _clients[i].Connect(token, logger, meta, globalMeta, properties);
if (ret != null)
{
break;
}
}
if ((ret == null) && (token.Status == NetStatusCodes.Success))
{
ret = new IpProxyClient().Connect(token, logger, meta, globalMeta, properties);
}
return(ret);
}
/// <summary>
/// Connect to the required service with the token
/// </summary>
/// <param name="token">The token recevied from proxy</param>
/// <param name="globalMeta">The global meta</param>
/// <param name="logger">The logger</param>
/// <param name="meta">The meta</param>
/// <param name="properties">Property bag to add any information to</param>
/// <param name="credmgr">Credentials manager</param>
/// <returns>The connected data adapter</returns>
public override IDataAdapter Connect(ProxyToken token, Logger logger, MetaDictionary meta, MetaDictionary globalMeta, PropertyBag properties, CredentialsManagerService credmgr)
{
IDataAdapter ret = null;
token.Status = NetStatusCodes.ConnectFailure;
if ((token is IpProxyToken) && ((IpProxyToken)token).ClientType == IpProxyToken.IpClientType.Tcp)
{
TcpClient client = new TcpClient();
try
{
client.Connect(_hostname, _port);
if (token is FullHttpProxyToken)
{
bool binary = false;
if ((token.Layers != null) && (token.Layers.Length > 0))
{
foreach (INetworkLayer layer in token.Layers)
{
// Find a binding layer
if (layer.Binding == NetworkLayerBinding.Client ||
layer.Binding == NetworkLayerBinding.ClientAndServer ||
layer.Binding == NetworkLayerBinding.Default)
{
if (!(layer is HttpNetworkLayer))
{
binary = true;
}
break;
}
}
}
if (!binary)
{
ret = new FullHttpProxyDataAdapter(client, (FullHttpProxyToken)token, IpProxyClient.GetDescription((IpProxyToken)token), logger);
NetUtils.PopulateBagFromSocket(client.Client, properties);
token.Status = NetStatusCodes.Success;
}
else
{
ConnectWithIpProxyToken(client.GetStream(), (IpProxyToken)token, logger);
if (token.Status == NetStatusCodes.Success)
{
NetUtils.PopulateBagFromSocket(client.Client, properties);
ret = new TcpClientDataAdapter(client, IpProxyClient.GetDescription((IpProxyToken)token));
}
}
}
else
{
if (token is HttpProxyToken)
{
ConnectWithHttpProxyToken(client.GetStream(), (HttpProxyToken)token, logger);
}
else
{
ConnectWithIpProxyToken(client.GetStream(), (IpProxyToken)token, logger);
}
if (token.Status == NetStatusCodes.Success)
{
NetUtils.PopulateBagFromSocket(client.Client, properties);
ret = new TcpClientDataAdapter(client, IpProxyClient.GetDescription((IpProxyToken)token));
}
}
}
catch (SocketException ex)
{
logger.LogException(ex);
token.Status = NetStatusCodes.ConnectFailure;
}
catch (IOException ex)
{
logger.LogException(ex);
token.Status = NetStatusCodes.ConnectFailure;
}
finally
{
if (ret == null)
{
client.Close();
}
}
}
else
{
throw new ArgumentException(CANAPE.Net.Properties.Resources.HttpProxyClient_InvalidProxyToken);
}
return(ret);
}
/// <summary>
/// Connect the client
/// </summary>
/// <param name="token">The proxy token</param>
/// <param name="logger">The proxy logger instance</param>
/// <param name="meta">The proxy meta data</param>
/// <param name="globalMeta">The proxy global meta data</param>
/// <param name="properties">The proxy property bag</param>
/// <param name="credmgr">Credentials manager</param>
/// <returns>The connected adapter</returns>
public override IDataAdapter Connect(ProxyToken token, Logger logger, MetaDictionary meta, MetaDictionary globalMeta, PropertyBag properties, CredentialsManagerService credmgr)
{
IDataAdapter ret = null;
for (int i = 0; i < _clients.Length; ++i)
{
ret = _clients[i].Connect(token, logger, meta, globalMeta, properties, credmgr);
if (ret != null)
{
break;
}
}
if ((ret == null) && (token.Status == NetStatusCodes.Success))
{
ret = new IpProxyClient().Connect(token, logger, meta, globalMeta, properties, credmgr);
}
return ret;
}
/// <summary>
/// Connection to the socks server
/// </summary>
/// <param name="token">The proxy token</param>
/// <param name="logger">Logger</param>
/// <param name="globalMeta">Global meta</param>
/// <param name="meta">Meta</param>
/// <param name="properties">Property bag to populate</param>
/// <returns>A connected data adapter, or null if not available</returns>
/// <exception cref="SocketException">Throw if cannot connect</exception>
/// <exception cref="ArgumentException">Throw if invalid operation occurs</exception>
/// <exception cref="EndOfStreamException">Throw if stream ends before reading all data</exception>
public override IDataAdapter Connect(ProxyToken token, Logger logger, MetaDictionary meta, MetaDictionary globalMeta, PropertyBag properties)
{
IDataAdapter ret = null;
if (token is IpProxyToken)
{
IpProxyToken iptoken = token as IpProxyToken;
TcpClient client = new TcpClient();
try
{
client.ConnectAsync(_hostname, _port).Wait();
if (_version == SupportedVersion.Version4)
{
if (_sendHostName && !String.IsNullOrWhiteSpace(iptoken.Hostname))
{
ConnectVersion4a(client.GetStream(), iptoken, logger);
}
else
{
ConnectVersion4(client.GetStream(), iptoken, logger);
}
}
else
{
ConnectVersion5(client.GetStream(), iptoken, logger);
}
if (iptoken.Status == NetStatusCodes.Success)
{
NetUtils.PopulateBagFromSocket(client.Client, properties);
ret = new TcpClientDataAdapter(client, IpProxyClient.GetDescription((IpProxyToken)token));
}
}
catch (SocketException ex)
{
logger.LogException(ex);
token.Status = NetStatusCodes.ConnectFailure;
}
catch (IOException ex)
{
logger.LogException(ex);
token.Status = NetStatusCodes.ConnectFailure;
}
finally
{
if (ret == null)
{
client.Dispose();
}
}
}
else
{
throw new ArgumentException(CANAPE.Net.Properties.Resources.SocksProxyClient_InvalidProxyToken3);
}
return(ret);
}
/// <summary>
/// Create the network service from this document
/// </summary>
/// <param name="logger">The logger for the service</param>
/// <returns>The new network service</returns>
public override ProxyNetworkService Create(Logger logger)
{
ProxyNetworkService ret = null;
if (logger == null)
{
logger = Logger.GetSystemLogger();
}
if ((_port <= 0) || (_port > 65535))
{
throw new NetServiceException("Must provide a valid port");
}
else
{
try
{
ProxyServer server = new FixedProxyServer(logger, _destination, _port, _udp ? IpProxyToken.IpClientType.Udp : IpProxyToken.IpClientType.Tcp,
_ipv6, _layers);
ProxyClient client = null;
if (_clientFactory != null)
{
client = _clientFactory.Create(logger);
}
else
{
client = new IpProxyClient();
}
ret = new ProxyNetworkService(
_packets,
CreateListener(logger), _netGraph == null ? BuildDefaultProxyFactory() : _netGraph.Factory, logger, _globalMeta, _history,
_credentials, server, client, null, Timeout.Infinite, false);
ret.DefaultBinding = NetworkLayerBinding.Client;
}
catch (SocketException ex)
{
throw new NetServiceException("Error creating network service", ex);
}
catch (IOException ex)
{
throw new NetServiceException("Error creating network service", ex);
}
return ret;
}
}
/// <summary>
/// Method to create a proxy client
/// </summary>
/// <param name="logger">The logger to use</param>
/// <returns>The new proxy client</returns>
public override ProxyClient Create(Utils.Logger logger)
{
ProxyClient ret = new IpProxyClient();
try
{
RegistryKey settings = Registry.CurrentUser.OpenSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings");
int enabled = (int)settings.GetValue("ProxyEnable", 0);
if (enabled != 0)
{
string autoConfigUrl = settings.GetValue("AutoConfigURL") as string;
if (autoConfigUrl != null)
{
Uri autoConfigUri = new Uri(autoConfigUrl, UriKind.Absolute);
if ((_scriptFactory == null) || (!_scriptFactory.ScriptUri.Equals(autoConfigUri)))
{
using (WebClient client = new WebClient())
{
client.Proxy = null;
string scriptData = client.DownloadString(autoConfigUrl);
logger.LogVerbose("Received auto config script from {0}", autoConfigUrl);
logger.LogVerbose(scriptData);
_scriptFactory = new ScriptProxyClientFactory();
_scriptFactory.ScriptUri = autoConfigUri;
_scriptFactory.Script = scriptData;
}
}
ret = _scriptFactory.Create(logger);
}
else
{
string proxyServer = settings.GetValue("ProxyServer") as string;
if (proxyServer != null)
{
string[] servers = proxyServer.ToLower().Split(new[] { ' ', ';' }, StringSplitOptions.RemoveEmptyEntries);
string currServer = null;
bool socks = false;
// Take socks in preference, otherwise accept HTTP or default
foreach (string server in servers)
{
if (server.Contains('='))
{
if (server.StartsWith("socks="))
{
currServer = server.Substring(6).Trim();
logger.LogVerbose("Found system SOCKS server {0}", currServer);
socks = true;
break;
}
else if (server.StartsWith("http="))
{
currServer = server.Substring(5).Trim();
logger.LogVerbose("Found system HTTP proxy {0}", currServer);
}
}
else
{
currServer = server.Trim();
logger.LogVerbose("Found default HTTP proxy {0}", currServer);
}
}
if (currServer != null)
{
string host = null;
int port = 0;
if (currServer.Contains("/"))
{
if (Uri.IsWellFormedUriString(currServer, UriKind.Absolute))
{
Uri uri = new Uri(currServer);
host = uri.Host;
port = uri.Port;
}
}
else
{
string[] values = currServer.Split(':');
if (values.Length == 2)
{
host = values[0].Trim();
int.TryParse(values[1].Trim(), out port);
}
}
if (String.IsNullOrWhiteSpace(host) || (port <= 0) || (port > 65535))
{
logger.LogError("Invalid system proxy string {0}", currServer);
}
else
{
if (socks)
{
ret = new SocksProxyClient(host, port, false, SocksProxyClient.SupportedVersion.Version4, false);
}
else
{
ret = new HttpProxyClient(host, port, false);
}
}
}
}
}
}
}
catch (SecurityException)
{
}
catch (UnauthorizedAccessException)
{
}
catch (WebException ex)
{
logger.LogException(ex);
}
return ret;
}
/// <summary>
/// Method to create a network service
/// </summary>
/// <param name="logger">The logger to use</param>
/// <returns>The network service</returns>
/// <exception cref="NetServiceException">Thrown in configuration invalid</exception>
public override ProxyNetworkService Create(Logger logger)
{
ProxyNetworkService ret = null;
if (logger == null)
{
logger = Logger.GetSystemLogger();
}
if ((_port < 0) || (_port > 65535))
{
throw new NetServiceException(Properties.Resources.GenericProxyDocument_MustSpecifyAValidPort);
}
else
{
try
{
List<ProxyFilter> filters = new List<ProxyFilter>();
foreach (ProxyFilterFactory item in _filters)
{
filters.Add(item.CreateFilter());
}
ProxyServer server = CreateServer(logger);
ProxyClient client = null;
if (_clientFactory != null)
{
client = _clientFactory.Create(logger);
}
else
{
client = new IpProxyClient();
}
INetworkListener listener = null;
if (NetUtils.OSSupportsIPv4)
{
listener = new TcpNetworkListener(_anyBind, false, _port, logger, false);
}
if (_ipv6Bind && NetUtils.OSSupportsIPv6)
{
INetworkListener ipv6Listener = new TcpNetworkListener(_anyBind, true, _port, logger, false);
if (listener != null)
{
listener = new AggregateNetworkListener(listener, ipv6Listener);
}
else
{
listener = ipv6Listener;
}
}
if (listener == null)
{
throw new NetServiceException(CANAPE.Documents.Properties.Resources.NetServiceDocument_CannotSetupListener);
}
ret = new ProxyNetworkService(
_packets,
listener,
_netGraph == null ? BuildDefaultProxyFactory() : _netGraph.Factory, logger, _globalMeta, _history,
_credentials, server, client, filters.ToArray(), Timeout.Infinite, false);
ret.DefaultBinding = CANAPE.Net.Layers.NetworkLayerBinding.ClientAndServer;
}
catch (SocketException ex)
{
throw new NetServiceException(Properties.Resources.GenericProxyDocument_ErrorCreatingService, ex);
}
catch (IOException ex)
{
throw new NetServiceException(Properties.Resources.GenericProxyDocument_ErrorCreatingService, ex);
}
return ret;
}
}
/// <summary>
/// Method to create the network service
/// </summary>
/// <param name="logger">The logger to use</param>
/// <returns>The network service</returns>
/// <exception cref="NetServiceException">Thrown if invalid configuration</exception>
public override ProxyNetworkService Create(Logger logger)
{
ProxyNetworkService ret = null;
if (logger == null)
{
logger = Logger.GetSystemLogger();
}
if ((_port <= 0) || (_port > 65535))
{
throw new NetServiceException(Properties.Resources.FixedProxyDocument_MustProvideValidPort);
}
else if ((_localPort < 0) || (_localPort > 65535))
{
throw new NetServiceException(Properties.Resources.FixedProxyDocument_MustProvideValidLocalPort);
}
else
{
try
{
ProxyServer server = new FixedProxyServer(logger, _host, _port,
_udp ? IpProxyToken.IpClientType.Udp : IpProxyToken.IpClientType.Tcp,
_ipv6, _layers);
ProxyClient client = null;
if (_clientFactory != null)
{
client = _clientFactory.Create(logger);
}
else
{
client = new IpProxyClient();
}
INetworkListener listener = null;
if (!_udp)
{
if (NetUtils.OSSupportsIPv4)
{
listener = new TcpNetworkListener(_anyBind, false, _localPort, logger, false);
}
if (_ipv6Bind && NetUtils.OSSupportsIPv6)
{
INetworkListener ipv6Listener = new TcpNetworkListener(_anyBind, true, _localPort, logger, false);
if (listener != null)
{
listener = new AggregateNetworkListener(listener, ipv6Listener);
}
else
{
listener = ipv6Listener;
}
}
}
else
{
if (NetUtils.OSSupportsIPv4)
{
listener = new UdpNetworkListener(_anyBind, false, _localPort, _enableBroadcast, logger);
}
if (_ipv6Bind && NetUtils.OSSupportsIPv6)
{
INetworkListener ipv6Listener = new UdpNetworkListener(_anyBind, true, _localPort, _enableBroadcast, logger);
if(listener != null)
{
listener = new AggregateNetworkListener(listener, ipv6Listener);
}
else
{
listener = ipv6Listener;
}
}
}
if (listener == null)
{
throw new NetServiceException(CANAPE.Documents.Properties.Resources.NetServiceDocument_CannotSetupListener);
}
ret = new ProxyNetworkService(_packets,
listener,
_netGraph == null ? BuildDefaultProxyFactory() : _netGraph.Factory, logger, _globalMeta, _history,
_credentials, server, client, null, Timeout.Infinite, false);
ret.DefaultBinding = NetworkLayerBinding.ClientAndServer;
}
catch (SocketException ex)
{
throw new NetServiceException(Properties.Resources.FixedProxyDocument_ErrorCreatingService, ex);
}
catch (IOException ex)
{
throw new NetServiceException(Properties.Resources.FixedProxyDocument_ErrorCreatingService, ex);
}
return ret;
}
}
