/// <summary>
/// 网页快照尺寸，Full Screenshot则设置Size.Empty
/// </summary>
/// <param name="size"></param>
internal static void xSnapshot(WebBrowser browser, Size size, string saveFileDirectory, Guid?fileID = null)
{
browser.ScrollBarsEnabled = false;
browser.Size = new Size(Screen.PrimaryScreen.WorkingArea.Width, 10240);
var arg = (ScriptingContext)browser.ObjectForScripting;
if (fileID == null)
{
fileID = CryptoManaged.MD5Hash(arg.RequestUrl.OriginalString);
}
string savePath = Path.Combine(saveFileDirectory, string.Format("{0}.png", fileID));
try
{
var js = new StringBuilder();
js.AppendFormat("document.body.setAttribute('_CurrentSnapshot', '{0}');", fileID);
js.Append(@" window.addEventListener('load', function () {
window.scrollTo(0, document.documentElement.offsetHeight);
});
");
xInvoke(browser, js.ToString());
browser.Size = size == Size.Empty ? browser.Document.Body.ScrollRectangle.Size : size;
using (var img = new Bitmap(browser.Width, browser.Height))
{
NativeMethods.DrawTo(browser.ActiveXInstance, img, Color.White);
img.Save(savePath, System.Drawing.Imaging.ImageFormat.Png);
App.LogInfo("xSnapshot {0} {1}", browser.Url, savePath);
}
}
catch (Exception ex)
{
App.LogError(ex, "xSnapshot {0} {1}", browser.Url, savePath);
}
}
public void UdpDirectSend(HttpContext context, UdpClient proxyClient, IPEndPoint remoteIpe)
{
context.Server.ScriptTimeout = Timeout;
HttpRequest Request = context.Request;
HttpResponse Response = context.Response;
Response.AppendHeader(HttpResponseHeader.Connection.ToString(), "keep-alive");
var httpFile = Request.Files[AgentDirect];
if (httpFile == null)
{
this.ResponseForbidden(context);
}
Stream inStream = httpFile.InputStream;
#if DEBUG
Guid checksum;
if (!Guid.TryParse(Request.Form[AgentChecksum], out checksum))
{
this.ResponseForbidden(context);
}
var mem = new MemoryStream();
inStream.FixedCopyTo(mem, httpFile.ContentLength);
mem.Position = 0L;
Guid checkKey = CryptoManaged.MD5Hash(mem);
if (checksum != checkKey)
{
this.ResponseForbidden(context);
}
mem.Position = 0L;
inStream = mem;
#endif
bool succeed = false;
int length = (int)inStream.Length;
try
{
var reader = new BinaryReader(inStream);
proxyClient.Send(reader.ReadBytes(length), length, remoteIpe);
succeed = true;
App.LogInfo("UdpDirectSend to {0} {1}bytes.", remoteIpe, length);
}
catch (ObjectDisposedException ex)
{
#if DEBUG
App.LogInfo(string.Format("Predictable objectDisposed exception: {0}", ex.StackTrace));
#endif
}
catch (SocketException ex)
{
TunnelExceptionHandler.Handle(ex, proxyClient.Client, "UdpDirectSend");
}
if (Response.IsClientConnected)
{
Response.Write(Convert.ToByte(succeed));
}
}
private void DirectSend(HttpContext context, TcpClient proxyClient)
{
context.Server.ScriptTimeout = Timeout;
HttpRequest Request = context.Request;
HttpResponse Response = context.Response;
//优化性能
Response.AppendHeader(HttpResponseHeader.Connection.ToString(), "keep-alive");
var httpFile = Request.Files[AgentDirect];
if (httpFile == null)
{
this.ResponseForbidden(context);
}
Stream inStream = httpFile.InputStream;
#if DEBUG
Guid checksum;
if (!Guid.TryParse(Request.Form[AgentChecksum], out checksum))
{
this.ResponseForbidden(context);
}
var mem = new MemoryStream();
inStream.FixedCopyTo(mem, httpFile.ContentLength);
mem.Position = 0L;
Guid checkKey = CryptoManaged.MD5Hash(mem);
if (checksum != checkKey)
{
this.ResponseForbidden(context);
}
mem.Position = 0L;
inStream = mem;
#endif
bool succeed = false;
if (proxyClient.Connected)
{
var proxyStream = proxyClient.GetStream();
int length = (int)inStream.Length;
try
{
inStream.FixedCopyTo(proxyStream, length);
succeed = true;
#if DEBUG
App.LogInfo("DirectSend to {0} {1}bytes.", proxyClient.Client.RemoteEndPoint, length);
#endif
}
catch (IOException ex)
{
TunnelExceptionHandler.Handle(ex, proxyClient.Client, "DirectSend");
}
}
if (Response.IsClientConnected)
{
Response.Write(Convert.ToByte(succeed));
}
}
private void ReverseDirectSend(HttpContext context, ref Guid agentSock)
{
context.Server.ScriptTimeout = Timeout;
HttpRequest Request = context.Request;
HttpResponse Response = context.Response;
Response.AppendHeader(HttpResponseHeader.Connection.ToString(), "keep-alive");
var httpFile = Request.Files[AgentDirect];
if (httpFile == null)
{
this.ResponseForbidden(context);
}
Stream inStream = httpFile.InputStream;
#if DEBUG
Guid checksum;
if (!Guid.TryParse(Request.Form[AgentChecksum], out checksum))
{
this.ResponseForbidden(context);
}
var mem = new MemoryStream();
inStream.FixedCopyTo(mem, httpFile.ContentLength);
mem.Position = 0L;
Guid checkKey = CryptoManaged.MD5Hash(mem);
if (checksum != checkKey)
{
this.ResponseForbidden(context);
}
mem.Position = 0L;
inStream = mem;
#endif
bool succeed = false;
var dataQueue = OnlineUsers.GetReverseQueue(agentSock, true);
if (dataQueue.Connected)
{
int length = (int)inStream.Length;
if (length > 0)
{
dataQueue.Push(inStream);
}
dataQueue.WaitHandle.Set();
succeed = true;
#if DEBUG
App.LogInfo("ReverseDirectSend to {0} {1}bytes.", dataQueue.RemoteEndPoint, length);
#endif
}
if (Response.IsClientConnected)
{
Response.Write(Convert.ToByte(succeed));
}
}
public Guid Send(string fileName, byte[] fileData)
{
using (var svc = new InfrastructureServiceClient())
{
svc.Invoke(t => t.SaveFile(new SaveFileParameter()
{
AppID = this.AppID,
FileName = fileName,
FileData = fileData
}));
}
return(CryptoManaged.MD5Hash(new MemoryStream(fileData)));
}
private static bool TryGetPath(SaveFileParameter param, out Guid checksum, out string path)
{
checksum = CryptoManaged.MD5Hash(new MemoryStream(param.FileData));
path = string.Format(@"{0}{1}\{2}{3}", InfrastructureRepository.RootPath, param.AppID.ToString("N"), checksum, Path.GetExtension(param.FileName));
var file = new FileInfo(path);
FileStream x = null;
try
{
return(!(file.Exists && CryptoManaged.MD5Hash(x = file.OpenRead()) == checksum));
}
finally
{
if (x != null)
{
x.Close();
}
}
}
public TransferConfig(string filePath, uint chunkLength = 0)
{
Contract.Requires(!string.IsNullOrEmpty(filePath));
var file = new FileInfo(filePath);
if (!file.Exists)
{
throw new FileNotFoundException(string.Empty, filePath);
}
this.FilePath = file.FullName;
this.FileLength = file.Length;
using (var stream = file.OpenRead())
{
this.Checksum = CryptoManaged.MD5Hash(stream);
}
ushort chunkSize = (ushort)(this.FileLength / Math.Max(MinChunkLength, chunkLength));
this.ChunkCount = chunkSize;
this.FileName = file.Name;
}
private string CreateNewUserName(string openID, OAuthKind kind)
{
string userName = kind.ToString() + "_" + CryptoManaged.MD5Hash(openID);
return(userName);
}
private void UdpDirectSend(object state)
{
var controlClient = (TcpClient)state;
if (!controlClient.Connected)
{
return;
}
string destIpe = null;
try
{
var currentState = this.GetUdpClientState(controlClient);
while (controlClient.Connected)
{
try
{
var localIpe = new IPEndPoint(IPAddress.Any, IPEndPoint.MinPort);
byte[] data = currentState.Client.Receive(ref localIpe);
if (!controlClient.Connected)
{
break;
}
if (data.IsNullOrEmpty() || !(data[0] == 0 && data[1] == 0 && data[2] == 0))
{
this.OutWrite("Udp Send Discard {0} {1}bytes.", localIpe, data == null ? -1 : data.Length);
App.LogInfo("Udp Send Discard 非法数据包.");
continue;
}
else if (!currentState.LocalEndPoint.Equals(localIpe))
{
this.OutWrite("Udp Send Discard {0} {1}bytes.", localIpe, data == null ? -1 : data.Length);
App.LogInfo("Udp Send Discard 非法本地端点.");
continue;
}
int offset = 4;
if (data[3] == 3)
{
DnsEndPoint de;
Socks4Request.PackOut(data, ref offset, out de);
currentState.AddRemoteEndPoint(de);
destIpe = string.Format("{0}:{1}", de.Host, de.Port);
}
else
{
IPEndPoint ipe;
Socks4Request.PackOut(data, ref offset, out ipe);
currentState.AddRemoteEndPoint(ipe);
destIpe = ipe.ToString();
}
var tunnel = this.CreateTunnel(TunnelCommand.UdpSend, controlClient);
tunnel.Headers[xHttpHandler.AgentDirect] = destIpe;
var outStream = new MemoryStream(data, offset, data.Length - offset);
#if DEBUG
tunnel.Form[xHttpHandler.AgentChecksum] = CryptoManaged.MD5Hash(outStream).ToString();
outStream.Position = 0L;
#endif
tunnel.Files.Add(new HttpFileContent(xHttpHandler.AgentDirect, xHttpHandler.AgentDirect, outStream));
var response = tunnel.GetResponse();
if (response.GetResponseText() != "1")
{
this.OutWrite("Udp {0} Send {1}\t{2}bytes failure.", currentState.LocalEndPoint, destIpe, outStream.Length);
return;
}
this.OutWrite("Udp {0} Send {1}\t{2}bytes.", currentState.LocalEndPoint, destIpe, outStream.Length);
//开始接收数据
currentState.SetOnce();
}
catch (ObjectDisposedException ex)
{
#if DEBUG
App.LogInfo(string.Format("Predictable objectDisposed exception: {0}", ex.StackTrace));
#endif
}
catch (WebException ex)
{
bool isRejected;
if (TunnelExceptionHandler.Handle(ex, string.Format("UdpDirectSend={0}", destIpe), _output, out isRejected))
{
controlClient.Client.Close();
}
if (isRejected)
{
this.OnServerRejected();
}
}
catch (SocketException ex)
{
if (ex.SocketErrorCode == SocketError.Interrupted)
{
#if DEBUG
App.LogInfo(string.Format("Predictable interrupted exception: {0}", ex.Message));
#endif
return;
}
TunnelExceptionHandler.Handle(ex, controlClient.Client, string.Format("UdpDirectSend={0}", destIpe));
}
}
}
catch (Exception ex)
{
TunnelExceptionHandler.Handle(ex, string.Format("UdpDirectSend={0}", destIpe));
}
}
private void DirectSend(object state)
{
var args = (object[])state;
var proxyClient = (TcpClient)args[0];
Guid?localAgentSock = null;
if (args.Length == 2)
{
localAgentSock = (Guid)args[1];
}
if (!proxyClient.Connected)
{
return;
}
string destIpe = null;
try
{
var localIpe = (IPEndPoint)proxyClient.Client.LocalEndPoint;
destIpe = this.GetClientState(proxyClient).ToString();
var proxyStream = proxyClient.GetStream();
var outStream = new MemoryStream();
while (proxyClient.Connected)
{
try
{
proxyStream.Read(xHttpHandler.EmptyBuffer, 0, 0);
int length;
//阻塞解除后做第2道检查，先判断连接状态否则proxyClient.Available会引发ObjectDisposedException
if (!proxyClient.Connected || (length = proxyClient.Available) == 0)
{
//客户端主动关闭
this.OutWrite("{0} Passive disconnect {1}.", localIpe, destIpe);
proxyClient.Close();
break;
}
outStream.Position = 0L;
outStream.SetLength(length);
proxyStream.FixedCopyTo(outStream, length);
outStream.Position = 0L;
var tunnel = this.CreateTunnel(TunnelCommand.Send, proxyClient);
if (localAgentSock != null)
{
tunnel.Headers[xHttpHandler.AgentReverse] = localAgentSock.Value.ToString("N");
}
#if DEBUG
tunnel.Form[xHttpHandler.AgentChecksum] = CryptoManaged.MD5Hash(outStream).ToString();
outStream.Position = 0L;
#endif
tunnel.Files.Add(new HttpFileContent(xHttpHandler.AgentDirect, xHttpHandler.AgentDirect, outStream));
var response = tunnel.GetResponse();
if (response.GetResponseText() != "1")
{
this.OutWrite("{0} Send {1}\t{2}bytes failure.", localIpe, destIpe, length);
continue;
}
this.OutWrite("{0} Send {1}\t{2}bytes.", localIpe, destIpe, length);
}
catch (WebException ex)
{
bool isReject;
if (TunnelExceptionHandler.Handle(ex, string.Format("DirectSend={0}", destIpe), _output, out isReject))
{
proxyClient.Client.Close();
}
if (isReject)
{
this.OnServerRejected();
}
}
catch (IOException ex)
{
var sockEx = ex.InnerException as SocketException;
if (sockEx != null)
{
//由于serverPush关闭后，无法将服务端主动关闭信号转发过来，因此proxyStream.Read()会引发Interrupted的异常；
//也就是说错误的原因在于调用Close()后，线程恰好继续向网络缓冲区中读取数据，所以引发SocketException。
if (sockEx.SocketErrorCode == SocketError.Interrupted)
{
#if DEBUG
App.LogInfo(string.Format("Predictable interrupted exception: {0}", sockEx.Message));
#endif
return;
}
}
TunnelExceptionHandler.Handle(ex, proxyClient.Client, string.Format("DirectSend={0}", destIpe));
}
catch (SocketException ex)
{
TunnelExceptionHandler.Handle(ex, proxyClient.Client, string.Format("DirectSend={0}", destIpe));
}
}
}
catch (Exception ex)
{
TunnelExceptionHandler.Handle(ex, string.Format("DirectSend={0}", destIpe));
}
}
