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Rev | Author | Line No. | Line |
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1092 | dev | 1 | using System; |
2 | using System.Collections; |
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3 | using System.Net; |
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4 | using System.Net.Sockets; |
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5 | using System.Threading; |
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6 | using System.Text; |
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7 | using System.Text.RegularExpressions; |
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8 | using System.Xml; |
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9 | |||
10 | // FIXME deny write access to all public properties |
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11 | // FIXME for text/xml get encoding from body if not specified in header |
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12 | // FIXME option to not store parsed data, just raw packets and reparse on demand |
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13 | namespace TCPproxy |
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14 | { |
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15 | public enum LogLevel |
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16 | { |
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17 | Critical, |
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18 | Error, |
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19 | Warning, |
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20 | Important, |
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21 | Info, |
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22 | Debug |
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23 | } |
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24 | |||
25 | public enum SocketState |
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26 | { |
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27 | None, |
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28 | Connecting, |
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29 | Connected, |
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30 | ShutdownSend, |
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31 | ShutdownReceive, |
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32 | Closed |
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33 | } |
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34 | |||
35 | public enum TcpMessageDirection |
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36 | { |
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37 | Local, |
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38 | Remote |
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39 | } |
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40 | |||
41 | public enum HttpVersion |
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42 | { |
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43 | V0_9, |
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44 | V1_0, |
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45 | V1_1 |
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46 | } |
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47 | |||
48 | public enum HttpEncoding |
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49 | { |
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50 | Identify, |
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51 | Gzip, |
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52 | Compress, |
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53 | Deflate, |
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54 | Unknown |
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55 | } |
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56 | |||
57 | public class TcpLogEventArgs : EventArgs |
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58 | { |
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59 | private readonly LogLevel level; |
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60 | private readonly string message; |
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61 | private readonly Exception exception; |
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62 | |||
63 | public LogLevel Level |
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64 | { |
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65 | get { return level; } |
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66 | } |
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67 | |||
68 | public string Message |
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69 | { |
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70 | get { return message; } |
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71 | } |
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72 | |||
73 | public Exception Exception |
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74 | { |
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75 | get { return exception; } |
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76 | } |
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77 | |||
78 | internal TcpLogEventArgs(LogLevel level, string message, Exception exception) |
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79 | { |
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80 | this.level = level; |
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81 | this.message = message; |
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82 | this.exception = exception; |
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83 | } |
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84 | } |
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85 | |||
86 | public class TcpEventArgs : EventArgs |
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87 | { |
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88 | internal TcpEventArgs() |
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89 | { |
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90 | } |
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91 | } |
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92 | |||
93 | public class TcpConnectionEventArgs : EventArgs |
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94 | { |
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95 | private readonly TcpConnection tcp; |
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96 | |||
97 | public TcpConnection Tcp |
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98 | { |
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99 | get { return tcp; } |
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100 | } |
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101 | |||
102 | internal TcpConnectionEventArgs(TcpConnection tcp) |
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103 | { |
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104 | this.tcp = tcp; |
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105 | } |
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106 | } |
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107 | |||
108 | public class TcpHttpEventArgs : EventArgs |
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109 | { |
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110 | private readonly HttpMessage http; |
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111 | |||
112 | public HttpMessage Http |
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113 | { |
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114 | get { return http; } |
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115 | } |
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116 | |||
117 | internal TcpHttpEventArgs(HttpMessage http) |
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118 | { |
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119 | this.http = http; |
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120 | } |
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121 | } |
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122 | |||
123 | public delegate void TcpLogEventHandler(object sender, TcpLogEventArgs e); |
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124 | |||
125 | public delegate void TcpEventHandler(object sender, TcpEventArgs e); |
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126 | |||
127 | public delegate void TcpConnectionEventHandler(object sender, TcpConnectionEventArgs e); |
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128 | |||
129 | public delegate void TcpHttpEventHandler(object sender, TcpHttpEventArgs e); |
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130 | |||
131 | public class TcpListener |
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132 | { |
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133 | private int listenPort = -1; |
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134 | private IPAddress resendHost; |
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135 | private int resendPort = -1; |
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136 | private Socket socket; |
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137 | private int tcpId = 0; |
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138 | private ArrayList tcpConnections = new ArrayList(); |
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139 | |||
140 | public TcpListener(int listenPort, IPAddress resendHost, int resendPort) |
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141 | { |
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142 | this.listenPort = listenPort; |
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143 | this.resendHost = resendHost; |
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144 | this.resendPort = resendPort; |
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145 | } |
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146 | |||
147 | public void StartListening() |
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148 | { |
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149 | socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); |
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150 | socket.Bind(new IPEndPoint(IPAddress.Any, listenPort)); |
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151 | socket.Listen(100); |
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152 | socket.BeginAccept(new AsyncCallback(OnClientConnect), null); |
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153 | SendLog(null, LogLevel.Important, "Listen on " + socket.LocalEndPoint); |
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154 | } |
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155 | |||
156 | public void StopListening() |
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157 | { |
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158 | try |
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159 | { |
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160 | if(socket != null) |
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161 | { |
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162 | SendLog(null, LogLevel.Important, "Stop listening " + socket.LocalEndPoint); |
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163 | socket.Close(); |
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164 | } |
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165 | } |
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166 | catch(ObjectDisposedException) // socket is already closed |
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167 | { |
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168 | } |
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169 | catch(Exception ex) |
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170 | { |
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171 | Console.WriteLine(ex.Message + " (" + ex.GetType().Name + ")\n" + ex.StackTrace); |
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172 | } |
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173 | } |
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174 | |||
175 | public void CancelAll() |
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176 | { |
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177 | ArrayList tcpConnectionsCopy; |
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178 | |||
179 | lock(tcpConnections) |
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180 | { |
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181 | tcpConnectionsCopy = new ArrayList(tcpConnections); |
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182 | } |
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183 | |||
184 | foreach(TcpConnection tcp in tcpConnectionsCopy) |
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185 | { |
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186 | tcp.Cancel(); |
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187 | } |
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188 | } |
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189 | |||
190 | protected virtual void OnClientConnect(IAsyncResult asyn) |
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191 | { |
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192 | try |
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193 | { |
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194 | Socket worker = socket.EndAccept(asyn); |
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195 | socket.BeginAccept(new AsyncCallback(OnClientConnect), null); // wait for next client |
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196 | |||
197 | TcpConnection tcp = new TcpConnection(string.Format("{0:0000}", tcpId++)); |
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198 | tcp.Close += new TcpEventHandler(TcpConnectionClosed); |
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199 | OnNewTcp(new TcpConnectionEventArgs(tcp)); |
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200 | |||
201 | lock(tcpConnections) |
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202 | { |
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203 | tcpConnections.Add(tcp); |
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204 | } |
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205 | |||
206 | tcp.Continue(resendHost, resendPort, worker); |
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207 | } |
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208 | catch(ObjectDisposedException) {} // socket is closed |
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209 | catch(Exception ex) |
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210 | { |
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211 | Console.WriteLine(ex.Message + " (" + ex.GetType().Name + ")\n" + ex.StackTrace); |
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212 | } |
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213 | } |
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214 | |||
215 | protected virtual void TcpConnectionClosed(object sender, TcpEventArgs e) |
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216 | { |
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217 | lock(tcpConnections) |
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218 | { |
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219 | tcpConnections.Remove((TcpConnection)sender); |
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220 | } |
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221 | } |
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222 | |||
223 | public event TcpConnectionEventHandler NewTcp; |
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224 | |||
225 | protected virtual void OnNewTcp(TcpConnectionEventArgs e) |
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226 | { |
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227 | if(NewTcp != null) |
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228 | { |
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229 | NewTcp(this, e); |
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230 | } |
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231 | } |
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232 | |||
233 | public event TcpLogEventHandler Log; |
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234 | |||
235 | protected virtual void OnLog(TcpLogEventArgs e) |
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236 | { |
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237 | if(Log != null) |
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238 | { |
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239 | Log(this, e); |
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240 | } |
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241 | } |
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242 | |||
243 | protected virtual void SendLog(TcpConnection tcp, LogLevel level, string message) |
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244 | { |
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245 | TcpLogEventArgs e = new TcpLogEventArgs(level, message, null); |
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246 | OnLog(e); |
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247 | } |
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248 | |||
249 | protected virtual void SendLog(TcpConnection tcp, LogLevel level, Exception ex) |
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250 | { |
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251 | TcpLogEventArgs e = new TcpLogEventArgs(level, null, ex); |
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252 | OnLog(e); |
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253 | } |
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254 | } |
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255 | |||
256 | public class TcpConnection |
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257 | { |
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258 | private string id; |
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259 | private DateTime startTimestamp = DateTime.MinValue; |
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260 | private DateTime localEndTimestamp = DateTime.MinValue; |
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261 | private DateTime remoteEndTimestamp = DateTime.MinValue; |
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262 | private IPEndPoint localPoint; |
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263 | private IPEndPoint remotePoint; |
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264 | private LinkedList messages = new LinkedList(); |
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265 | private SocketState localState = SocketState.None; |
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266 | private SocketState remoteState = SocketState.None; |
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267 | private SocketWorker worker; |
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268 | private LinkedList https = new LinkedList(); |
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269 | private HttpParser httpParser; |
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270 | |||
271 | public string Id |
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272 | { |
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273 | get { return id; } |
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274 | } |
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275 | |||
276 | public DateTime StartTimestamp |
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277 | { |
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278 | get { return startTimestamp; } |
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279 | } |
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280 | |||
281 | public DateTime LocalEndTimestamp |
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282 | { |
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283 | get { return localEndTimestamp; } |
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284 | } |
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285 | |||
286 | public DateTime RemoteEndTimestamp |
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287 | { |
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288 | get { return remoteEndTimestamp; } |
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289 | } |
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290 | |||
291 | public IPEndPoint LocalPoint |
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292 | { |
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293 | get { return localPoint; } |
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294 | } |
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295 | |||
296 | public IPEndPoint RemotePoint |
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297 | { |
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298 | get { return remotePoint; } |
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299 | } |
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300 | |||
301 | public LinkedList Messages |
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302 | { |
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303 | get { return messages; } // FIXME return read-only object |
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304 | } |
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305 | |||
306 | public SocketState LocalState |
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307 | { |
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308 | get { return localState; } |
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309 | } |
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310 | |||
311 | public SocketState RemoteState |
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312 | { |
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313 | get { return remoteState; } |
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314 | } |
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315 | |||
316 | private int CountBytes(TcpMessageDirection direction) |
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317 | { |
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318 | int count = 0; |
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319 | |||
320 | foreach(TcpMessage message in messages) |
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321 | { |
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322 | if(message.Direction == direction) |
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323 | count += message.Length; |
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324 | } |
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325 | return count; |
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326 | } |
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327 | |||
328 | public int SentBytes |
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329 | { |
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330 | get { return CountBytes(TcpMessageDirection.Local); } |
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331 | } |
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332 | |||
333 | public int ReceivedBytes |
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334 | { |
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335 | get { return CountBytes(TcpMessageDirection.Remote); } |
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336 | } |
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337 | |||
338 | internal TcpConnection(string id) |
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339 | { |
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340 | this.id = id; |
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341 | this.httpParser = HttpParser.Parse(this); |
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342 | } |
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343 | |||
344 | internal void Continue(IPAddress resendHost, int resendPort, Socket localSocket) |
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345 | { |
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346 | SendLog(LogLevel.Important, "Client connected from " + ((IPEndPoint)localSocket.RemoteEndPoint).ToString()); |
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347 | SetLocalState(SocketState.Connected); |
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348 | this.worker = new SocketWorker(resendHost, resendPort, localSocket, this); |
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349 | } |
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350 | |||
351 | public void Cancel() |
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352 | { |
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353 | worker.Cancel(); |
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354 | } |
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355 | |||
356 | protected TcpMessage Append(TcpMessageDirection direction, byte[] newBytes) |
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357 | { |
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358 | return Append(direction, newBytes, newBytes.Length); |
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359 | } |
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360 | |||
361 | protected TcpMessage Append(TcpMessageDirection direction, byte[] newBytes, int length) |
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362 | { |
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363 | if(newBytes == null) return null; |
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364 | |||
365 | TcpMessage message; |
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366 | |||
367 | lock(this) |
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368 | { |
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369 | message = new TcpMessage(); |
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370 | message.Direction = direction; |
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371 | messages.Add(message); |
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372 | message.Append(newBytes, length); |
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373 | } |
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374 | |||
375 | httpParser.NewMessageArived(); |
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376 | OnUpdate(new TcpEventArgs()); |
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377 | |||
378 | return message; |
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379 | } |
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380 | |||
381 | internal void AddHttpMessage(HttpMessage http) |
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382 | { |
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383 | lock(this) |
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384 | { |
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385 | https.Add(http); |
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386 | TcpHttpEventArgs e = new TcpHttpEventArgs(http); |
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387 | OnNewHttp(e); |
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388 | } |
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389 | } |
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390 | |||
391 | |||
392 | public override string ToString() // FIXME delete the method |
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393 | { |
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394 | return id + " " + startTimestamp.ToString("HH:mm:ss.ffff"); |
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395 | } |
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396 | |||
397 | |||
398 | protected void SetLocalPoint(IPEndPoint localPoint) |
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399 | { |
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400 | this.localPoint = localPoint; |
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401 | OnUpdate(new TcpEventArgs()); |
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402 | } |
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403 | |||
404 | protected void SetRemotePoint(IPEndPoint remotePoint) |
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405 | { |
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406 | this.remotePoint = remotePoint; |
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407 | OnUpdate(new TcpEventArgs()); |
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408 | } |
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409 | |||
410 | protected void SetLocalState(SocketState localState) |
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411 | { |
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412 | if(this.localState == SocketState.None && localState == SocketState.Connecting) |
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413 | { |
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414 | startTimestamp = DateTime.Now; |
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415 | } |
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416 | else if(this.localState == SocketState.None && localState == SocketState.Connected) |
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417 | { |
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418 | startTimestamp = DateTime.Now; |
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419 | } |
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420 | else if(this.localState == SocketState.None && localState == SocketState.Closed) |
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421 | { |
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422 | } |
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423 | else if(this.localState == SocketState.Connecting && localState == SocketState.Connected) |
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424 | { |
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425 | } |
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426 | else if(this.localState == SocketState.Connecting && localState == SocketState.Closed) |
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427 | { |
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428 | if(localEndTimestamp == DateTime.MinValue) localEndTimestamp = DateTime.Now; |
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429 | } |
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430 | else if(this.localState == SocketState.Connected && localState == SocketState.ShutdownSend) |
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431 | { |
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432 | } |
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433 | else if(this.localState == SocketState.Connected && localState == SocketState.ShutdownReceive) |
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434 | { |
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435 | if(localEndTimestamp == DateTime.MinValue) localEndTimestamp = DateTime.Now; |
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436 | } |
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437 | else if(this.localState == SocketState.Connected && localState == SocketState.Closed) |
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438 | { |
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439 | if(localEndTimestamp == DateTime.MinValue) localEndTimestamp = DateTime.Now; |
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440 | } |
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441 | else if(this.localState == SocketState.ShutdownSend && localState == SocketState.Closed) |
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442 | { |
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443 | if(localEndTimestamp == DateTime.MinValue) localEndTimestamp = DateTime.Now; |
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444 | } |
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445 | else if(this.localState == SocketState.ShutdownSend && localState == SocketState.ShutdownReceive) |
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446 | { |
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447 | if(localEndTimestamp == DateTime.MinValue) localEndTimestamp = DateTime.Now; |
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448 | } |
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449 | else if(this.localState == SocketState.ShutdownReceive && localState == SocketState.ShutdownSend) |
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450 | { |
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451 | } |
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452 | else if(this.localState == SocketState.ShutdownReceive && localState == SocketState.Closed) |
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453 | { |
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454 | if(localEndTimestamp == DateTime.MinValue) localEndTimestamp = DateTime.Now; |
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455 | } |
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456 | else if(this.localState == SocketState.Closed && localState == SocketState.Closed) |
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457 | { |
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458 | if(localEndTimestamp == DateTime.MinValue) localEndTimestamp = DateTime.Now; |
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459 | } |
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460 | else |
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461 | { |
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462 | throw new Exception("Wrong local socket state change: from " + this.localState + " to " + localState); |
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463 | } |
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464 | this.localState = localState; |
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465 | if(this.localState == SocketState.Closed) httpParser.NewMessageArived(); |
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466 | OnUpdate(new TcpEventArgs()); |
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467 | } |
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468 | |||
469 | protected void SetRemoteState(SocketState remoteState) |
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470 | { |
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471 | if(this.remoteState == SocketState.None && remoteState == SocketState.Connecting) |
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472 | { |
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473 | } |
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474 | else if(this.remoteState == SocketState.None && remoteState == SocketState.Connected) |
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475 | { |
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476 | } |
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477 | else if(this.remoteState == SocketState.None && remoteState == SocketState.Closed) |
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478 | { |
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479 | } |
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480 | else if(this.remoteState == SocketState.Connecting && remoteState == SocketState.Connected) |
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481 | { |
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482 | } |
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483 | else if(this.remoteState == SocketState.Connecting && remoteState == SocketState.Closed) |
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484 | { |
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485 | if(remoteEndTimestamp == DateTime.MinValue) remoteEndTimestamp = DateTime.Now; |
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486 | } |
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487 | else if(this.remoteState == SocketState.Connected && remoteState == SocketState.ShutdownSend) |
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488 | { |
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489 | } |
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490 | else if(this.remoteState == SocketState.Connected && remoteState == SocketState.ShutdownReceive) |
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491 | { |
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492 | if(remoteEndTimestamp == DateTime.MinValue) remoteEndTimestamp = DateTime.Now; |
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493 | } |
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494 | else if(this.remoteState == SocketState.Connected && remoteState == SocketState.Closed) |
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495 | { |
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496 | if(remoteEndTimestamp == DateTime.MinValue) remoteEndTimestamp = DateTime.Now; |
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497 | } |
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498 | else if(this.remoteState == SocketState.ShutdownSend && remoteState == SocketState.Closed) |
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499 | { |
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500 | if(remoteEndTimestamp == DateTime.MinValue) remoteEndTimestamp = DateTime.Now; |
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501 | } |
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502 | else if(this.remoteState == SocketState.ShutdownSend && remoteState == SocketState.ShutdownReceive) |
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503 | { |
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504 | if(remoteEndTimestamp == DateTime.MinValue) remoteEndTimestamp = DateTime.Now; |
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505 | } |
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506 | else if(this.remoteState == SocketState.ShutdownReceive && remoteState == SocketState.ShutdownSend) |
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507 | { |
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508 | } |
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509 | else if(this.remoteState == SocketState.ShutdownReceive && remoteState == SocketState.Closed) |
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510 | { |
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511 | if(remoteEndTimestamp == DateTime.MinValue) remoteEndTimestamp = DateTime.Now; |
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512 | } |
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513 | else if(this.remoteState == SocketState.Closed && remoteState == SocketState.Closed) |
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514 | { |
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515 | if(remoteEndTimestamp == DateTime.MinValue) remoteEndTimestamp = DateTime.Now; |
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516 | } |
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517 | else |
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518 | { |
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519 | throw new Exception("Wrong remote socket state change: from " + this.remoteState + " to " + remoteState); |
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520 | } |
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521 | this.remoteState = remoteState; |
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522 | if(this.remoteState == SocketState.Closed) httpParser.NewMessageArived(); |
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523 | OnUpdate(new TcpEventArgs()); |
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524 | } |
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525 | |||
526 | public event TcpEventHandler Update; |
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527 | |||
528 | protected virtual void OnUpdate(TcpEventArgs e) |
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529 | { |
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530 | if(Update != null) |
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531 | { |
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532 | Update(this, e); |
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533 | } |
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534 | } |
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535 | |||
536 | public event TcpHttpEventHandler NewHttp; |
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537 | |||
538 | protected virtual void OnNewHttp(TcpHttpEventArgs e) |
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539 | { |
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540 | if(NewHttp != null) |
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541 | { |
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542 | NewHttp(this, e); |
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543 | } |
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544 | } |
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545 | |||
546 | public event TcpEventHandler Close; |
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547 | |||
548 | protected virtual void OnClose(TcpEventArgs e) |
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549 | { |
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550 | if(Close != null) |
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551 | { |
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552 | Close(this, e); |
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553 | } |
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554 | } |
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555 | |||
556 | public event TcpLogEventHandler Log; |
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557 | |||
558 | protected virtual void OnLog(TcpLogEventArgs e) |
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559 | { |
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560 | if(Log != null) |
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561 | { |
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562 | Log(this, e); |
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563 | } |
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564 | } |
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565 | |||
566 | protected virtual void SendLog(LogLevel level, string message) |
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567 | { |
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568 | TcpLogEventArgs e = new TcpLogEventArgs(level, message, null); |
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569 | OnLog(e); |
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570 | } |
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571 | |||
572 | protected virtual void SendLog(LogLevel level, Exception ex) |
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573 | { |
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574 | TcpLogEventArgs e = new TcpLogEventArgs(level, null, ex); |
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575 | OnLog(e); |
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576 | } |
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577 | |||
578 | protected class SocketWorker |
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579 | { |
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580 | private enum SendCommandType |
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581 | { |
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582 | Send, |
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583 | Shutdown, |
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584 | Reset |
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585 | } |
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586 | |||
587 | private class SendCommand |
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588 | { |
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589 | public byte[] buffer = null; |
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590 | public int length = 0; |
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591 | public SendCommandType cmdType = SendCommandType.Send; |
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592 | } |
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593 | |||
594 | private static int BUF_SIZE = 2048; |
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595 | |||
596 | private TcpConnection tcp; |
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597 | private Socket localSocket; |
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598 | private Socket remoteSocket; |
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599 | private byte[] localDataBuffer; |
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600 | private byte[] remoteDataBuffer; |
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601 | private AsyncCallback receiveLocalMethod; |
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602 | private AsyncCallback receiveRemoteMethod; |
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603 | private Queue localSendQueue = new Queue(); |
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604 | private Queue remoteSendQueue = new Queue(); |
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605 | private AutoResetEvent localSendEvent = new AutoResetEvent(false); |
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606 | private AutoResetEvent remoteSendEvent = new AutoResetEvent(false); |
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607 | private bool localSocketSendShutdown = false; |
||
608 | private bool localSocketReceiveShutdown = false; |
||
609 | private bool remoteSocketSendShutdown = false; |
||
610 | private bool remoteSocketReceiveShutdown = false; |
||
611 | private ManualResetEvent remoteSocketEvent = new ManualResetEvent(false); |
||
612 | private Thread localSendThread; |
||
613 | private Thread remoteSendThread; |
||
614 | |||
615 | public SocketWorker(IPAddress resendHost, int resendPort, Socket localSocket, TcpConnection tcp) |
||
616 | { |
||
617 | try |
||
618 | { |
||
619 | tcp.SendLog(LogLevel.Debug, string.Format("Local socket: {0}:{1} <-> {2}:{3}", |
||
620 | ((IPEndPoint)localSocket.LocalEndPoint).Address, |
||
621 | ((IPEndPoint)localSocket.LocalEndPoint).Port, |
||
622 | ((IPEndPoint)localSocket.RemoteEndPoint).Address, |
||
623 | ((IPEndPoint)localSocket.RemoteEndPoint).Port)); |
||
624 | |||
625 | this.localSocket = localSocket; |
||
626 | this.tcp = tcp; |
||
627 | receiveLocalMethod = new AsyncCallback(OnLocalReceived); |
||
628 | receiveRemoteMethod = new AsyncCallback(OnRemoteReceived); |
||
629 | |||
630 | tcp.SetLocalPoint((IPEndPoint)localSocket.RemoteEndPoint); |
||
631 | this.localSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.NoDelay, 1); |
||
632 | |||
633 | localSendThread = new Thread(new ThreadStart(LocalSendProc)); |
||
634 | localSendThread.Name = "SocketWorker.LocalSendProc"; |
||
635 | localSendThread.Start(); |
||
636 | |||
637 | ContinueLocalReceive(); |
||
638 | |||
639 | if(resendHost == null) |
||
640 | { |
||
641 | remoteSocket = null; |
||
642 | } |
||
643 | else |
||
644 | { |
||
645 | tcp.SetRemoteState(SocketState.Connecting); |
||
646 | |||
647 | IPEndPoint point = new IPEndPoint(resendHost, resendPort); |
||
648 | remoteSocket = new Socket(point.AddressFamily, SocketType.Stream, ProtocolType.Tcp); |
||
649 | remoteSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.NoDelay, 1); |
||
650 | remoteSocket.Connect(point); |
||
651 | tcp.SetRemoteState(SocketState.Connected); |
||
652 | tcp.SetRemotePoint((IPEndPoint)remoteSocket.RemoteEndPoint); |
||
653 | |||
654 | remoteSendThread = new Thread(new ThreadStart(RemoteSendProc)); |
||
655 | remoteSendThread.Name = "SocketWorker.RemoteSendProc"; |
||
656 | remoteSendThread.Start(); |
||
657 | |||
658 | ContinueRemoteReceive(); |
||
659 | remoteSocketEvent.Set(); // remote socket ready to send data |
||
660 | tcp.SendLog(LogLevel.Info, "Connected to server " + tcp.RemotePoint.ToString()); |
||
661 | |||
662 | tcp.SendLog(LogLevel.Debug, string.Format("Remote socket: {0}:{1} <-> {2}:{3}", |
||
663 | ((IPEndPoint)remoteSocket.LocalEndPoint).Address, |
||
664 | ((IPEndPoint)remoteSocket.LocalEndPoint).Port, |
||
665 | ((IPEndPoint)remoteSocket.RemoteEndPoint).Address, |
||
666 | ((IPEndPoint)remoteSocket.RemoteEndPoint).Port)); |
||
667 | } |
||
668 | } |
||
669 | catch(Exception ex) |
||
670 | { |
||
671 | tcp.SendLog(LogLevel.Warning, ex); |
||
672 | Cancel(); |
||
673 | } |
||
674 | } |
||
675 | |||
676 | private void ContinueLocalReceive() |
||
677 | { |
||
678 | try |
||
679 | { |
||
680 | localDataBuffer = new byte[BUF_SIZE]; |
||
681 | localSocket.BeginReceive(localDataBuffer, 0, BUF_SIZE, SocketFlags.None, receiveLocalMethod, this); |
||
682 | } |
||
683 | catch(ObjectDisposedException ex) // the socket is closed |
||
684 | { |
||
685 | tcp.SendLog(LogLevel.Info, ex); |
||
686 | Cancel(); |
||
687 | } |
||
688 | catch(Exception ex) |
||
689 | { |
||
690 | tcp.SendLog(LogLevel.Warning, ex); |
||
691 | Cancel(); |
||
692 | } |
||
693 | } |
||
694 | |||
695 | private void ContinueRemoteReceive() |
||
696 | { |
||
697 | try |
||
698 | { |
||
699 | remoteDataBuffer = new byte[BUF_SIZE]; |
||
700 | remoteSocket.BeginReceive(remoteDataBuffer, 0, BUF_SIZE, SocketFlags.None, receiveRemoteMethod, this); |
||
701 | } |
||
702 | catch(ObjectDisposedException ex) // the socket is closed |
||
703 | { |
||
704 | tcp.SendLog(LogLevel.Info, ex); |
||
705 | Cancel(); |
||
706 | } |
||
707 | catch(Exception ex) |
||
708 | { |
||
709 | tcp.SendLog(LogLevel.Warning, ex); |
||
710 | Cancel(); |
||
711 | } |
||
712 | } |
||
713 | |||
714 | private void CheckLocalSocket() |
||
715 | { |
||
716 | lock(localSocket) |
||
717 | { |
||
718 | try |
||
719 | { |
||
720 | if(localSocketReceiveShutdown && localSocketSendShutdown) |
||
721 | { |
||
722 | if(localSocket.Connected) localSocket.Close(); |
||
723 | tcp.SetLocalState(SocketState.Closed); |
||
724 | } |
||
725 | } |
||
726 | catch(Exception ex) // in any case we want to close the socket |
||
727 | { |
||
728 | tcp.SendLog(LogLevel.Warning, ex); |
||
729 | } |
||
730 | } |
||
731 | } |
||
732 | |||
733 | private void CheckRemoteSocket() |
||
734 | { |
||
735 | lock(remoteSocket) |
||
736 | { |
||
737 | try |
||
738 | { |
||
739 | if(remoteSocketReceiveShutdown && remoteSocketSendShutdown) |
||
740 | { |
||
741 | if(remoteSocket.Connected) remoteSocket.Close(); |
||
742 | tcp.SetRemoteState(SocketState.Closed); |
||
743 | } |
||
744 | } |
||
745 | catch(Exception ex) // in any case we want to close the socket |
||
746 | { |
||
747 | tcp.SendLog(LogLevel.Warning, ex); |
||
748 | } |
||
749 | } |
||
750 | } |
||
751 | |||
752 | private void OnLocalReceived(IAsyncResult asyn) |
||
753 | { |
||
754 | try |
||
755 | { |
||
756 | int bytesReceived = 0; |
||
757 | bool reset = false; |
||
758 | |||
759 | try |
||
760 | { |
||
761 | bytesReceived = localSocket.EndReceive(asyn); |
||
762 | } |
||
763 | catch(ObjectDisposedException) |
||
764 | { |
||
765 | reset = true; |
||
766 | } |
||
767 | catch(SocketException ex) |
||
768 | { |
||
769 | if(ex.ErrorCode == 10054) |
||
770 | reset = true; |
||
771 | else |
||
772 | throw ex; |
||
773 | } |
||
774 | |||
775 | if(reset) |
||
776 | { |
||
777 | tcp.SendLog(LogLevel.Info, "Got reset from local end"); |
||
778 | |||
779 | lock(localSocket) |
||
780 | { |
||
781 | if(localSocket.Connected) localSocket.Close(); |
||
782 | tcp.SetLocalState(SocketState.Closed); |
||
783 | } |
||
784 | |||
785 | SendCommand cmd = new SendCommand(); |
||
786 | cmd.cmdType = SendCommandType.Reset; |
||
787 | lock(localSendQueue) |
||
788 | { |
||
789 | localSendQueue.Enqueue(cmd); |
||
790 | localSendEvent.Set(); |
||
791 | } |
||
792 | } |
||
793 | else if(bytesReceived <= 0) |
||
794 | { |
||
795 | tcp.SendLog(LogLevel.Info, "Got showdown from local end"); |
||
796 | |||
797 | localSocket.Shutdown(SocketShutdown.Receive); |
||
798 | tcp.SetLocalState(SocketState.ShutdownReceive); |
||
799 | localSocketReceiveShutdown = true; |
||
800 | CheckLocalSocket(); |
||
801 | |||
802 | SendCommand cmd = new SendCommand(); |
||
803 | cmd.cmdType = SendCommandType.Shutdown; |
||
804 | lock(localSendQueue) |
||
805 | { |
||
806 | localSendQueue.Enqueue(cmd); |
||
807 | localSendEvent.Set(); |
||
808 | } |
||
809 | } |
||
810 | else |
||
811 | { |
||
812 | tcp.SendLog(LogLevel.Debug, string.Format("Local received {0} bytes", bytesReceived)); |
||
813 | |||
814 | SendCommand cmd = new SendCommand(); |
||
815 | cmd.buffer = localDataBuffer; |
||
816 | cmd.length = bytesReceived; |
||
817 | lock(localSendQueue) |
||
818 | { |
||
819 | localSendQueue.Enqueue(cmd); |
||
820 | localSendEvent.Set(); |
||
821 | } |
||
822 | ContinueLocalReceive(); |
||
823 | } |
||
824 | } |
||
825 | catch(Exception ex) |
||
826 | { |
||
827 | tcp.SendLog(LogLevel.Warning, ex); |
||
828 | Cancel(); |
||
829 | } |
||
830 | } |
||
831 | |||
832 | private void LocalSendProc() |
||
833 | { |
||
834 | try |
||
835 | { |
||
836 | while(true) |
||
837 | { |
||
838 | SendCommand cmd; |
||
839 | |||
840 | if(localSendQueue.Count == 0) |
||
841 | { |
||
842 | localSendEvent.WaitOne(); |
||
843 | } |
||
844 | |||
845 | lock(localSendQueue) |
||
846 | { |
||
847 | localSendEvent.Reset(); |
||
848 | cmd = (SendCommand)localSendQueue.Dequeue(); |
||
849 | } |
||
850 | |||
851 | if(cmd.cmdType == SendCommandType.Reset) // reset marker |
||
852 | { |
||
853 | if(remoteSocket == null || !remoteSocket.Connected) remoteSocketEvent.WaitOne(); |
||
854 | tcp.SendLog(LogLevel.Debug, string.Format("Send reset to remote end")); |
||
855 | lock(remoteSocket) |
||
856 | { |
||
857 | if(!remoteSocket.Connected) remoteSocket.Close(); |
||
858 | tcp.SetRemoteState(SocketState.Closed); |
||
859 | } |
||
860 | |||
861 | break; // no more send allowed |
||
862 | } |
||
863 | else if(cmd.cmdType == SendCommandType.Shutdown) // shutdown marker |
||
864 | { |
||
865 | if(remoteSocket == null || !remoteSocket.Connected) remoteSocketEvent.WaitOne(); |
||
866 | tcp.SendLog(LogLevel.Debug, string.Format("Send shutdown to remote end")); |
||
867 | remoteSocket.Shutdown(SocketShutdown.Send); |
||
868 | tcp.SetRemoteState(SocketState.ShutdownSend); |
||
869 | remoteSocketSendShutdown = true; |
||
870 | CheckRemoteSocket(); |
||
871 | |||
872 | break; // no more send allowed |
||
873 | } |
||
874 | else |
||
875 | { |
||
876 | // store received bytes |
||
877 | tcp.Append(TcpMessageDirection.Local, cmd.buffer, cmd.length); |
||
878 | |||
879 | // forward it |
||
880 | if(remoteSocket == null || !remoteSocket.Connected) remoteSocketEvent.WaitOne(); |
||
881 | tcp.SendLog(LogLevel.Debug, string.Format("Send {0} bytes to remote end", cmd.length)); |
||
882 | remoteSocket.Send(cmd.buffer, cmd.length, SocketFlags.None); |
||
883 | } |
||
884 | } |
||
885 | } |
||
886 | catch(ThreadAbortException) |
||
887 | { |
||
888 | } |
||
889 | catch(Exception ex) |
||
890 | { |
||
891 | tcp.SendLog(LogLevel.Warning, ex); |
||
892 | Cancel(); |
||
893 | } |
||
894 | } |
||
895 | |||
896 | private void OnRemoteReceived(IAsyncResult asyn) |
||
897 | { |
||
898 | try |
||
899 | { |
||
900 | int bytesReceived = 0; |
||
901 | bool reset = false; |
||
902 | |||
903 | try |
||
904 | { |
||
905 | bytesReceived = remoteSocket.EndReceive(asyn); |
||
906 | } |
||
907 | catch(ObjectDisposedException) |
||
908 | { |
||
909 | reset = true; |
||
910 | } |
||
911 | catch(SocketException ex) |
||
912 | { |
||
913 | if(ex.ErrorCode == 10054) |
||
914 | reset = true; |
||
915 | else |
||
916 | throw ex; |
||
917 | } |
||
918 | |||
919 | if(reset) |
||
920 | { |
||
921 | tcp.SendLog(LogLevel.Info, "Got reset from remote end"); |
||
922 | |||
923 | lock(remoteSocket) |
||
924 | { |
||
925 | if(remoteSocket.Connected) remoteSocket.Close(); |
||
926 | tcp.SetRemoteState(SocketState.Closed); |
||
927 | } |
||
928 | |||
929 | SendCommand cmd = new SendCommand(); |
||
930 | cmd.cmdType = SendCommandType.Reset; |
||
931 | lock(remoteSendQueue) |
||
932 | { |
||
933 | remoteSendQueue.Enqueue(cmd); |
||
934 | remoteSendEvent.Set(); |
||
935 | } |
||
936 | } |
||
937 | else if(bytesReceived <= 0) |
||
938 | { |
||
939 | tcp.SendLog(LogLevel.Info, "Got showdown from remote end"); |
||
940 | |||
941 | remoteSocket.Shutdown(SocketShutdown.Receive); |
||
942 | tcp.SetRemoteState(SocketState.ShutdownReceive); |
||
943 | remoteSocketReceiveShutdown = true; |
||
944 | CheckRemoteSocket(); |
||
945 | |||
946 | SendCommand cmd = new SendCommand(); |
||
947 | cmd.cmdType = SendCommandType.Shutdown; |
||
948 | lock(remoteSendQueue) |
||
949 | { |
||
950 | remoteSendQueue.Enqueue(cmd); |
||
951 | remoteSendEvent.Set(); |
||
952 | } |
||
953 | } |
||
954 | else |
||
955 | { |
||
956 | tcp.SendLog(LogLevel.Debug, string.Format("Remote received {0} bytes", bytesReceived)); |
||
957 | |||
958 | SendCommand cmd = new SendCommand(); |
||
959 | cmd.buffer = remoteDataBuffer; |
||
960 | cmd.length = bytesReceived; |
||
961 | lock(remoteSendQueue) |
||
962 | { |
||
963 | remoteSendQueue.Enqueue(cmd); |
||
964 | remoteSendEvent.Set(); |
||
965 | } |
||
966 | ContinueRemoteReceive(); |
||
967 | } |
||
968 | } |
||
969 | catch(Exception ex) |
||
970 | { |
||
971 | tcp.SendLog(LogLevel.Warning, ex); |
||
972 | Cancel(); |
||
973 | } |
||
974 | } |
||
975 | |||
976 | private void RemoteSendProc() |
||
977 | { |
||
978 | try |
||
979 | { |
||
980 | while(true) |
||
981 | { |
||
982 | SendCommand cmd; |
||
983 | |||
984 | if(remoteSendQueue.Count == 0) |
||
985 | { |
||
986 | remoteSendEvent.WaitOne(); |
||
987 | } |
||
988 | |||
989 | lock(remoteSendQueue) |
||
990 | { |
||
991 | remoteSendEvent.Reset(); |
||
992 | cmd = (SendCommand)remoteSendQueue.Dequeue(); |
||
993 | } |
||
994 | |||
995 | if(cmd.cmdType == SendCommandType.Reset) // reset marker |
||
996 | { |
||
997 | tcp.SendLog(LogLevel.Debug, string.Format("Send reset to local end")); |
||
998 | lock(localSocket) |
||
999 | { |
||
1000 | if(localSocket.Connected) localSocket.Close(); |
||
1001 | tcp.SetLocalState(SocketState.Closed); |
||
1002 | } |
||
1003 | |||
1004 | break; // no more send allowed |
||
1005 | } |
||
1006 | else if(cmd.cmdType == SendCommandType.Shutdown) // shutdown marker |
||
1007 | { |
||
1008 | tcp.SendLog(LogLevel.Debug, string.Format("Send shutdown to local end")); |
||
1009 | localSocket.Shutdown(SocketShutdown.Send); |
||
1010 | tcp.SetLocalState(SocketState.ShutdownSend); |
||
1011 | localSocketSendShutdown = true; |
||
1012 | CheckLocalSocket(); |
||
1013 | |||
1014 | break; // no more send allowed |
||
1015 | } |
||
1016 | else |
||
1017 | { |
||
1018 | // store received bytes |
||
1019 | tcp.Append(TcpMessageDirection.Remote, cmd.buffer, cmd.length); |
||
1020 | |||
1021 | // forward it |
||
1022 | tcp.SendLog(LogLevel.Debug, string.Format("Send {0} bytes to local end", cmd.length)); |
||
1023 | localSocket.Send(cmd.buffer, cmd.length, SocketFlags.None); |
||
1024 | } |
||
1025 | } |
||
1026 | } |
||
1027 | catch(ThreadAbortException) |
||
1028 | { |
||
1029 | } |
||
1030 | catch(Exception ex) |
||
1031 | { |
||
1032 | tcp.SendLog(LogLevel.Warning, ex); |
||
1033 | Cancel(); |
||
1034 | } |
||
1035 | } |
||
1036 | |||
1037 | public void Cancel() |
||
1038 | { |
||
1039 | tcp.SendLog(LogLevel.Important, "Connection canceled"); |
||
1040 | |||
1041 | try |
||
1042 | { |
||
1043 | if(localSendThread != null && localSendThread.IsAlive) localSendThread.Abort(); |
||
1044 | if(remoteSendThread != null && remoteSendThread.IsAlive) remoteSendThread.Abort(); |
||
1045 | |||
1046 | // close sockets |
||
1047 | try |
||
1048 | { |
||
1049 | if(localSocket != null) |
||
1050 | { |
||
1051 | lock(localSocket) |
||
1052 | { |
||
1053 | if(localSocket.Connected) localSocket.Close(); |
||
1054 | } |
||
1055 | } |
||
1056 | } |
||
1057 | catch(Exception ex) // in any case we want to close the socket |
||
1058 | { |
||
1059 | tcp.SendLog(LogLevel.Warning, ex); |
||
1060 | } |
||
1061 | tcp.SetLocalState(SocketState.Closed); |
||
1062 | |||
1063 | try |
||
1064 | { |
||
1065 | if(remoteSocket != null) |
||
1066 | { |
||
1067 | lock(remoteSocket) |
||
1068 | { |
||
1069 | if(remoteSocket.Connected) remoteSocket.Close(); |
||
1070 | } |
||
1071 | } |
||
1072 | } |
||
1073 | catch(Exception ex) // in any case we want to close the socket |
||
1074 | { |
||
1075 | tcp.SendLog(LogLevel.Warning, ex); |
||
1076 | } |
||
1077 | tcp.SetRemoteState(SocketState.Closed); |
||
1078 | |||
1079 | // return |
||
1080 | tcp.OnClose(new TcpEventArgs()); |
||
1081 | } |
||
1082 | catch(Exception ex) |
||
1083 | { |
||
1084 | tcp.SendLog(LogLevel.Warning, ex); |
||
1085 | } |
||
1086 | } |
||
1087 | } |
||
1088 | } |
||
1089 | |||
1090 | internal class HttpParser |
||
1091 | { |
||
1092 | private enum HttpCharType |
||
1093 | { |
||
1094 | None, |
||
1095 | Control, |
||
1096 | Digit, |
||
1097 | UpAlpha, |
||
1098 | LoAlpha, |
||
1099 | NonChar, |
||
1100 | Separator, |
||
1101 | CrLf, |
||
1102 | } |
||
1103 | |||
1104 | private static HttpCharType[] charTypes = null; |
||
1105 | private static bool[] tokenChars = null; |
||
1106 | private static char[] charValues = { |
||
1107 | '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', |
||
1108 | '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', |
||
1109 | ' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/', |
||
1110 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', |
||
1111 | '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', |
||
1112 | 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', |
||
1113 | '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', |
||
1114 | 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', '\0' |
||
1115 | }; |
||
1116 | |||
1117 | private static void InitTables() |
||
1118 | { |
||
1119 | if(charTypes != null) return; |
||
1120 | |||
1121 | // main table |
||
1122 | charTypes = new HttpCharType[256]; |
||
1123 | |||
1124 | for(int i = 0; i < charTypes.Length; i++) charTypes[i] = HttpCharType.None; |
||
1125 | |||
1126 | for(int i = 0; i <= 31; i++) charTypes[i] = HttpCharType.Control; |
||
1127 | charTypes[127] = HttpCharType.Control; // <del> |
||
1128 | |||
1129 | for(int i = 48; i <= 57; i++) charTypes[i] = HttpCharType.Digit; |
||
1130 | |||
1131 | for(int i = 65; i <= 90; i++) charTypes[i] = HttpCharType.UpAlpha; |
||
1132 | for(int i = 97; i <= 122; i++) charTypes[i] = HttpCharType.LoAlpha; |
||
1133 | |||
1134 | for(int i = 128; i < charTypes.Length; i++) charTypes[i] = HttpCharType.NonChar; |
||
1135 | |||
1136 | charTypes[ 40] = HttpCharType.Separator; // ( |
||
1137 | charTypes[ 41] = HttpCharType.Separator; // ) |
||
1138 | charTypes[ 60] = HttpCharType.Separator; // < |
||
1139 | charTypes[ 62] = HttpCharType.Separator; // > |
||
1140 | charTypes[ 64] = HttpCharType.Separator; // @ |
||
1141 | charTypes[ 44] = HttpCharType.Separator; // , |
||
1142 | charTypes[ 59] = HttpCharType.Separator; // ; |
||
1143 | charTypes[ 58] = HttpCharType.Separator; // : |
||
1144 | charTypes[ 92] = HttpCharType.Separator; // \ |
||
1145 | charTypes[ 34] = HttpCharType.Separator; // " |
||
1146 | charTypes[ 47] = HttpCharType.Separator; // / |
||
1147 | charTypes[ 91] = HttpCharType.Separator; // [ |
||
1148 | charTypes[ 93] = HttpCharType.Separator; // ] |
||
1149 | charTypes[ 63] = HttpCharType.Separator; // ? |
||
1150 | charTypes[ 61] = HttpCharType.Separator; // = |
||
1151 | charTypes[123] = HttpCharType.Separator; // { |
||
1152 | charTypes[125] = HttpCharType.Separator; // } |
||
1153 | charTypes[ 32] = HttpCharType.Separator; // <space> |
||
1154 | charTypes[ 9] = HttpCharType.Separator; // <tab> |
||
1155 | |||
1156 | charTypes[ 13] = HttpCharType.CrLf; // <CR> |
||
1157 | charTypes[ 10] = HttpCharType.CrLf; // <LF> |
||
1158 | |||
1159 | // token table |
||
1160 | tokenChars = new bool[256]; |
||
1161 | for(int i = 0; i < tokenChars.Length; i++) |
||
1162 | { |
||
1163 | tokenChars[i] = !(charTypes[i] == HttpCharType.NonChar |
||
1164 | || charTypes[i] == HttpCharType.Control || charTypes[i] == HttpCharType.Separator |
||
1165 | || charTypes[i] == HttpCharType.CrLf); |
||
1166 | } |
||
1167 | } |
||
1168 | |||
1169 | private class ParsePosition |
||
1170 | { |
||
1171 | private TcpConnection messages; |
||
1172 | private IEnumerator messagesEnum; |
||
1173 | private TcpMessage tcp = null; |
||
1174 | private int tcpPos; |
||
1175 | private int tcpLen; |
||
1176 | private bool tcpEnd = false; |
||
1177 | private AutoResetEvent newMessageEvent; |
||
1178 | private AutoResetEvent nextMessageEvent; |
||
1179 | |||
1180 | public ParsePosition(TcpConnection messages, AutoResetEvent nextMessageEvent) |
||
1181 | { |
||
1182 | this.messages = messages; |
||
1183 | this.messagesEnum = messages.Messages.GetEnumerator(); |
||
1184 | this.newMessageEvent = new AutoResetEvent(false); |
||
1185 | this.nextMessageEvent = nextMessageEvent; |
||
1186 | } |
||
1187 | |||
1188 | public AutoResetEvent NewMessageEvent |
||
1189 | { |
||
1190 | get { return newMessageEvent; } |
||
1191 | } |
||
1192 | |||
1193 | public bool IsEnd |
||
1194 | { |
||
1195 | get { return tcpEnd; } |
||
1196 | } |
||
1197 | |||
1198 | public TcpMessage CurrentMessage |
||
1199 | { |
||
1200 | get { return tcp; } |
||
1201 | } |
||
1202 | |||
1203 | private bool MoveNext() |
||
1204 | { |
||
1205 | for(bool moved = false; !moved; ) |
||
1206 | { |
||
1207 | lock(messages) |
||
1208 | { |
||
1209 | newMessageEvent.Reset(); |
||
1210 | moved = messagesEnum.MoveNext(); |
||
1211 | } |
||
1212 | |||
1213 | if(moved) break; |
||
1214 | |||
1215 | if(!newMessageEvent.WaitOne()) |
||
1216 | throw new Exception("Cannot get next TCP message"); |
||
1217 | |||
1218 | lock(messages) |
||
1219 | { |
||
1220 | if(messages.LocalState == SocketState.Closed && messages.RemoteState == SocketState.Closed) |
||
1221 | return false; |
||
1222 | |||
1223 | moved = messagesEnum.MoveNext(); |
||
1224 | } |
||
1225 | } |
||
1226 | |||
1227 | return true; |
||
1228 | } |
||
1229 | |||
1230 | private void NextTcp() |
||
1231 | { |
||
1232 | if(tcpEnd) return; |
||
1233 | |||
1234 | TcpMessage newTcp = null; |
||
1235 | |||
1236 | do |
||
1237 | { |
||
1238 | if(!MoveNext()) |
||
1239 | { |
||
1240 | tcpEnd = true; |
||
1241 | break; |
||
1242 | } |
||
1243 | newTcp = (TcpMessage)messagesEnum.Current; |
||
1244 | } |
||
1245 | while(tcp != null && tcp.Direction != newTcp.Direction); |
||
1246 | |||
1247 | if(!tcpEnd) |
||
1248 | { |
||
1249 | tcp = newTcp; |
||
1250 | tcpLen = tcp.Length; |
||
1251 | tcpPos = 0; |
||
1252 | if(nextMessageEvent != null) nextMessageEvent.Set(); |
||
1253 | } |
||
1254 | } |
||
1255 | |||
1256 | public byte CurrentOctet() |
||
1257 | { |
||
1258 | if(tcp == null || tcpPos >= tcpLen) NextTcp(); |
||
1259 | if(tcpEnd) return 0; |
||
1260 | |||
1261 | return tcp.Bytes[tcpPos]; |
||
1262 | } |
||
1263 | |||
1264 | public byte NextOctet() |
||
1265 | { |
||
1266 | tcpPos++; |
||
1267 | |||
1268 | if(tcp == null || tcpPos >= tcpLen) NextTcp(); |
||
1269 | if(tcpEnd) return 0; |
||
1270 | |||
1271 | return tcp.Bytes[tcpPos]; |
||
1272 | } |
||
1273 | |||
1274 | public void SetDirection(TcpMessageDirection direction) |
||
1275 | { |
||
1276 | do |
||
1277 | { |
||
1278 | if(!MoveNext()) |
||
1279 | { |
||
1280 | tcp = null; |
||
1281 | tcpEnd = true; |
||
1282 | break; |
||
1283 | } |
||
1284 | tcp = (TcpMessage)messagesEnum.Current; |
||
1285 | } |
||
1286 | while(tcp.Direction != direction); |
||
1287 | |||
1288 | if(!tcpEnd) |
||
1289 | { |
||
1290 | tcpLen = tcp.Length; |
||
1291 | tcpPos = 0; |
||
1292 | } |
||
1293 | } |
||
1294 | } |
||
1295 | |||
1296 | private TcpConnection messages; |
||
1297 | private AutoResetEvent requestEvent = new AutoResetEvent(false); // new request found |
||
1298 | private AutoResetEvent nextMessageEvent = new AutoResetEvent(false); // request goes to next TCP message |
||
1299 | private LinkedList https = new LinkedList(); |
||
1300 | private ParsePosition requestPos; |
||
1301 | private ParsePosition responsePos; |
||
1302 | private AutoResetEvent newMessageEvent = new AutoResetEvent(false); // new TCP message available |
||
1303 | private Thread runThread; |
||
1304 | |||
1305 | public static HttpParser Parse(TcpConnection messages) |
||
1306 | { |
||
1307 | HttpParser parser = new HttpParser(messages); |
||
1308 | parser.runThread = new Thread(new ThreadStart(parser.Run)); |
||
1309 | parser.RunThread.Name = "HttpParser.Run"; |
||
1310 | parser.runThread.Start(); |
||
1311 | |||
1312 | return parser; |
||
1313 | } |
||
1314 | |||
1315 | public void NewMessageArived() |
||
1316 | { |
||
1317 | requestPos.NewMessageEvent.Set(); |
||
1318 | responsePos.NewMessageEvent.Set(); |
||
1319 | } |
||
1320 | |||
1321 | public Thread RunThread |
||
1322 | { |
||
1323 | get { return runThread; } |
||
1324 | } |
||
1325 | |||
1326 | private HttpParser(TcpConnection messages) |
||
1327 | { |
||
1328 | this.messages = messages; |
||
1329 | InitTables(); |
||
1330 | } |
||
1331 | |||
1332 | /// <summary> |
||
1333 | /// Try to recognize the stored TCP packets as sequence of HTTP messages (request-response) |
||
1334 | /// </summary> |
||
1335 | private void Run() |
||
1336 | { |
||
1337 | Thread responseThread = null; |
||
1338 | |||
1339 | try |
||
1340 | { |
||
1341 | requestPos = new ParsePosition(messages, nextMessageEvent); |
||
1342 | responsePos = new ParsePosition(messages, null); |
||
1343 | |||
1344 | responseThread = new Thread(new ThreadStart(MatchResponses)); |
||
1345 | responseThread.Name = "HttpParser.MatchResponses"; |
||
1346 | responseThread.Start(); |
||
1347 | |||
1348 | // find requests |
||
1349 | while(!requestPos.IsEnd) |
||
1350 | { |
||
1351 | HttpMessage http = new HttpMessage(); |
||
1352 | lock(https) |
||
1353 | { |
||
1354 | https.Add(http); |
||
1355 | requestEvent.Set(); // new request available |
||
1356 | } |
||
1357 | |||
1358 | messages.AddHttpMessage(http); |
||
1359 | SkipEmptyLines(requestPos); |
||
1360 | |||
1361 | ParseRequestLine(requestPos, http); |
||
1362 | http.UpdateHttpMessage(); |
||
1363 | |||
1364 | ParseHeaders(requestPos, http, true); |
||
1365 | SetRequestProperties(http); |
||
1366 | http.UpdateHttpMessage(); |
||
1367 | |||
1368 | bool fullLength = ParseBody(requestPos, http, true); |
||
1369 | if("text" == http.RequestContentType && "xml" == http.RequestContentSubtype) |
||
1370 | { |
||
1371 | http.RequestXml = new XmlMessage(http.RequestText); |
||
1372 | } |
||
1373 | http.UpdateHttpMessage(); |
||
1374 | |||
1375 | if(fullLength) requestPos.NextOctet(); |
||
1376 | http.RequestComplete = true; |
||
1377 | http.UpdateHttpMessage(); |
||
1378 | |||
1379 | SkipEmptyLines(requestPos); |
||
1380 | } |
||
1381 | |||
1382 | responseThread.Join(); |
||
1383 | } |
||
1384 | catch(Exception ex) |
||
1385 | { |
||
1386 | Console.WriteLine(ex.Message + " (" + ex.GetType().Name + ")\n" + ex.StackTrace); |
||
1387 | if(responseThread != null) responseThread.Abort(); |
||
1388 | } |
||
1389 | } |
||
1390 | |||
1391 | private void MatchResponses() |
||
1392 | { |
||
1393 | try |
||
1394 | { |
||
1395 | IEnumerator httpEnum = https.GetEnumerator(); |
||
1396 | |||
1397 | if(!nextMessageEvent.WaitOne()) throw new Exception("Cannot get first message of request"); |
||
1398 | |||
1399 | responsePos.SetDirection(requestPos.CurrentMessage.Direction == TcpMessageDirection.Local |
||
1400 | ? TcpMessageDirection.Remote : TcpMessageDirection.Local); |
||
1401 | |||
1402 | while(!responsePos.IsEnd) |
||
1403 | { |
||
1404 | bool moved; |
||
1405 | |||
1406 | lock(https) |
||
1407 | { |
||
1408 | requestEvent.Reset(); |
||
1409 | moved = httpEnum.MoveNext(); |
||
1410 | } |
||
1411 | |||
1412 | if(!moved) |
||
1413 | { |
||
1414 | if(!requestEvent.WaitOne()) |
||
1415 | throw new Exception("Cannot get next request"); |
||
1416 | |||
1417 | lock(https) |
||
1418 | { |
||
1419 | if(!httpEnum.MoveNext()) |
||
1420 | throw new Exception("Tried to find response by no HTTP message available"); |
||
1421 | } |
||
1422 | } |
||
1423 | |||
1424 | HttpMessage http = (HttpMessage)httpEnum.Current; |
||
1425 | |||
1426 | ParseResponseLine(responsePos, http); |
||
1427 | http.UpdateHttpMessage(); |
||
1428 | |||
1429 | ParseHeaders(responsePos, http, false); |
||
1430 | SetResponseProperties(http); |
||
1431 | http.UpdateHttpMessage(); |
||
1432 | |||
1433 | bool fullLength = ParseBody(responsePos, http, false); |
||
1434 | if("text" == http.ResponseContentType && "xml" == http.ResponseContentSubtype) |
||
1435 | { |
||
1436 | http.ResponseXml = new XmlMessage(http.ResponseText); |
||
1437 | } |
||
1438 | http.UpdateHttpMessage(); |
||
1439 | |||
1440 | if(fullLength) responsePos.NextOctet(); |
||
1441 | http.ResponseComplete = true; |
||
1442 | http.UpdateHttpMessage(); |
||
1443 | } |
||
1444 | } |
||
1445 | catch(Exception ex) |
||
1446 | { |
||
1447 | Console.WriteLine(ex.Message + " (" + ex.GetType().Name + ")\n" + ex.StackTrace); |
||
1448 | } |
||
1449 | } |
||
1450 | |||
1451 | private string GetToken(ParsePosition pos, int limit) |
||
1452 | { |
||
1453 | StringBuilder res = new StringBuilder(100); |
||
1454 | int len = 0; |
||
1455 | |||
1456 | for(byte b = pos.CurrentOctet(); !pos.IsEnd && tokenChars[b]; b = pos.NextOctet()) |
||
1457 | { |
||
1458 | res.Append(charValues[b]); |
||
1459 | if(limit > 0 && limit < ++len) return null; // length limit |
||
1460 | } |
||
1461 | |||
1462 | return res.ToString(); |
||
1463 | } |
||
1464 | |||
1465 | private string GetUntilSpace(ParsePosition pos, int limit) |
||
1466 | { |
||
1467 | StringBuilder res = new StringBuilder(1024); |
||
1468 | int len = 0; |
||
1469 | |||
1470 | for(byte b = pos.CurrentOctet(); !pos.IsEnd && b != 32 && b != 13 && b != 10; b = pos.NextOctet()) |
||
1471 | { // <space> <cr> <lf> |
||
1472 | res.Append(charValues[b]); |
||
1473 | if(limit > 0 && limit < ++len) return null; // length limit |
||
1474 | } |
||
1475 | |||
1476 | return res.ToString(); |
||
1477 | } |
||
1478 | |||
1479 | private string GetUntilEoL(ParsePosition pos, int limit) |
||
1480 | { |
||
1481 | StringBuilder res = new StringBuilder(1024); |
||
1482 | int len = 0; |
||
1483 | |||
1484 | for(byte b = pos.CurrentOctet(); !pos.IsEnd && b != 13; b = pos.NextOctet()) |
||
1485 | { // <cr> |
||
1486 | res.Append(charValues[b]); |
||
1487 | if(limit > 0 && limit < ++len) return null; // length limit |
||
1488 | } |
||
1489 | |||
1490 | return res.ToString(); |
||
1491 | } |
||
1492 | |||
1493 | private void ExpectSpace(ParsePosition pos) |
||
1494 | { |
||
1495 | if(pos.IsEnd || pos.CurrentOctet() != 32) |
||
1496 | throw new HttpParseException("Space expected"); |
||
1497 | |||
1498 | pos.NextOctet(); |
||
1499 | } |
||
1500 | |||
1501 | private void ExpectCRLF(ParsePosition pos) |
||
1502 | { |
||
1503 | if(pos.IsEnd || pos.CurrentOctet() != 13) |
||
1504 | throw new HttpParseException("Carriage return expected"); |
||
1505 | if(pos.IsEnd || pos.NextOctet() != 10) |
||
1506 | throw new HttpParseException("Linefeed expected"); |
||
1507 | |||
1508 | pos.NextOctet(); |
||
1509 | } |
||
1510 | |||
1511 | private void SkipEmptyLines(ParsePosition pos) |
||
1512 | { |
||
1513 | while(pos.CurrentOctet() == 13) |
||
1514 | ExpectCRLF(pos); |
||
1515 | } |
||
1516 | |||
1517 | private void ParseRequestLine(ParsePosition pos, HttpMessage http) |
||
1518 | { |
||
1519 | // method |
||
1520 | http.RequestMethod = GetToken(pos, 1024); |
||
1521 | if(http.RequestMethod == null || http.RequestMethod.Length == 0) |
||
1522 | throw new HttpParseException("Request method name expected"); |
||
1523 | ExpectSpace(pos); |
||
1524 | |||
1525 | // URI |
||
1526 | http.RequestUri = GetUntilSpace(pos, 1024); |
||
1527 | if(http.RequestUri == null || http.RequestUri.Length == 0) |
||
1528 | throw new HttpParseException("Request URI expected"); |
||
1529 | |||
1530 | if(pos.IsEnd) |
||
1531 | throw new HttpParseException("Unexpected end of message"); |
||
1532 | |||
1533 | // EoL or version |
||
1534 | byte b = pos.CurrentOctet(); |
||
1535 | if(b == 13) |
||
1536 | { |
||
1537 | if(pos.IsEnd || pos.NextOctet() != 10) |
||
1538 | { |
||
1539 | throw new HttpParseException("Linefeed expected"); |
||
1540 | } |
||
1541 | else |
||
1542 | { |
||
1543 | if(!pos.IsEnd) ExpectCRLF(pos); |
||
1544 | http.RequestVersion = HttpVersion.V0_9; |
||
1545 | return; |
||
1546 | } |
||
1547 | } |
||
1548 | else if(b != 32) |
||
1549 | { |
||
1550 | throw new HttpParseException("HTTP version expected"); |
||
1551 | } |
||
1552 | pos.NextOctet(); |
||
1553 | |||
1554 | // check version |
||
1555 | string versionStr = GetUntilEoL(pos, 20); |
||
1556 | if(pos.IsEnd || versionStr == null || versionStr.Length == 0) |
||
1557 | throw new HttpParseException("HTTP version expected"); |
||
1558 | |||
1559 | if(versionStr == "HTTP/1.0") |
||
1560 | { |
||
1561 | http.RequestVersion = HttpVersion.V1_0; |
||
1562 | } |
||
1563 | else if(versionStr == "HTTP/1.1") |
||
1564 | { |
||
1565 | http.RequestVersion = HttpVersion.V1_1; |
||
1566 | } |
||
1567 | else |
||
1568 | { |
||
1569 | throw new HttpParseException("Unknown HTTP version: " + versionStr); |
||
1570 | } |
||
1571 | |||
1572 | ExpectCRLF(pos); |
||
1573 | } |
||
1574 | |||
1575 | private void ParseHeaders(ParsePosition pos, HttpMessage http, bool request) |
||
1576 | { |
||
1577 | if(pos.IsEnd) return; // end of TCP messages |
||
1578 | |||
1579 | while(true) |
||
1580 | { |
||
1581 | if(pos.IsEnd) |
||
1582 | throw new HttpParseException("Unexpected end of message"); |
||
1583 | |||
1584 | if(pos.CurrentOctet() == 13) |
||
1585 | { |
||
1586 | if(pos.IsEnd || pos.NextOctet() != 10) |
||
1587 | { |
||
1588 | throw new HttpParseException("Linefeed expected"); |
||
1589 | } |
||
1590 | else |
||
1591 | { |
||
1592 | pos.NextOctet(); // end of header, move to body |
||
1593 | return; |
||
1594 | } |
||
1595 | } |
||
1596 | if(pos.IsEnd) return; // end of TCP messages |
||
1597 | |||
1598 | string name = GetToken(pos, 0); |
||
1599 | if(name == null || name.Length == 0) |
||
1600 | throw new HttpParseException("Request header name expected"); |
||
1601 | |||
1602 | if(pos.IsEnd || pos.CurrentOctet() != 58) // : |
||
1603 | throw new HttpParseException("Request header value expected"); |
||
1604 | |||
1605 | pos.NextOctet(); |
||
1606 | string s = TrimHeaderValue(GetUntilEoL(pos, 0)); |
||
1607 | |||
1608 | ExpectCRLF(pos); |
||
1609 | |||
1610 | if(request) |
||
1611 | http.AddRequestHeader(name, s); |
||
1612 | else |
||
1613 | http.AddResponseHeader(name, s); |
||
1614 | } |
||
1615 | } |
||
1616 | |||
1617 | enum HeaderValueState |
||
1618 | { |
||
1619 | Space, |
||
1620 | Token, |
||
1621 | Quoted |
||
1622 | } |
||
1623 | |||
1624 | private string TrimHeaderValue(string s) |
||
1625 | { |
||
1626 | if(s == null) return null; |
||
1627 | |||
1628 | HeaderValueState state = HeaderValueState.Space; |
||
1629 | StringBuilder buf = new StringBuilder(); |
||
1630 | |||
1631 | for(int i = 0, l = s.Length; i < l; i++) |
||
1632 | { |
||
1633 | char c = s[i]; |
||
1634 | switch(state) |
||
1635 | { |
||
1636 | case HeaderValueState.Space: |
||
1637 | if(c != ' ' && c != '\t') |
||
1638 | { |
||
1639 | if(c == '"') |
||
1640 | { |
||
1641 | if(buf.Length > 0) buf.Append(' '); |
||
1642 | buf.Append(c); |
||
1643 | state = HeaderValueState.Quoted; |
||
1644 | } |
||
1645 | else |
||
1646 | { |
||
1647 | if(buf.Length > 0) buf.Append(' '); |
||
1648 | buf.Append(c); |
||
1649 | state = HeaderValueState.Token; |
||
1650 | } |
||
1651 | } |
||
1652 | break; |
||
1653 | |||
1654 | case HeaderValueState.Token: |
||
1655 | if(c == ' ' || c == '\t') |
||
1656 | { |
||
1657 | state = HeaderValueState.Space; |
||
1658 | } |
||
1659 | else if(c == '"') |
||
1660 | { |
||
1661 | buf.Append(c); |
||
1662 | state = HeaderValueState.Quoted; |
||
1663 | } |
||
1664 | else |
||
1665 | { |
||
1666 | buf.Append(c); |
||
1667 | } |
||
1668 | break; |
||
1669 | |||
1670 | case HeaderValueState.Quoted: |
||
1671 | if(c == '"') |
||
1672 | { |
||
1673 | buf.Append(c); |
||
1674 | i++; |
||
1675 | if(i < l) |
||
1676 | { |
||
1677 | c = s[i]; |
||
1678 | if(c == ' ' || c == '\t') |
||
1679 | { |
||
1680 | state = HeaderValueState.Space; |
||
1681 | } |
||
1682 | else if(c == '"') |
||
1683 | { |
||
1684 | buf.Append(c); |
||
1685 | state = HeaderValueState.Quoted; |
||
1686 | } |
||
1687 | else |
||
1688 | { |
||
1689 | buf.Append(c); |
||
1690 | state = HeaderValueState.Token; |
||
1691 | } |
||
1692 | } |
||
1693 | } |
||
1694 | else |
||
1695 | { |
||
1696 | buf.Append(c); |
||
1697 | } |
||
1698 | break; |
||
1699 | } |
||
1700 | } |
||
1701 | |||
1702 | return buf.ToString(); |
||
1703 | } |
||
1704 | |||
1705 | private HttpEncoding ParseEncoding(string encoding) |
||
1706 | { |
||
1707 | if(encoding == null || encoding == "identity") |
||
1708 | return HttpEncoding.Identify; |
||
1709 | else if(encoding == "gzip") |
||
1710 | return HttpEncoding.Gzip; |
||
1711 | else if(encoding == "compress") |
||
1712 | return HttpEncoding.Compress; |
||
1713 | else if(encoding == "deflate") |
||
1714 | return HttpEncoding.Deflate; |
||
1715 | else |
||
1716 | return HttpEncoding.Unknown; |
||
1717 | } |
||
1718 | |||
1719 | private void SetRequestProperties(HttpMessage http) |
||
1720 | { |
||
1721 | // length |
||
1722 | string contentLength = (string)http.RequestHeadersHash["Content-Length"]; |
||
1723 | if(contentLength != null) |
||
1724 | { |
||
1725 | http.RequestLength = int.Parse(contentLength); |
||
1726 | } |
||
1727 | |||
1728 | // encoding |
||
1729 | http.RequestEncoding = ParseEncoding((string)http.RequestHeadersHash["Content-Encoding"]); |
||
1730 | |||
1731 | // type & charset |
||
1732 | string contentType = (string)http.RequestHeadersHash["Content-Type"]; |
||
1733 | if(contentType != null) |
||
1734 | { |
||
1735 | Match match = Regex.Match(contentType, @"^\s*(\S+)/(\S+)\s*($|;\s*(charset=""?(\S+)""?)?)"); |
||
1736 | if(match.Success) |
||
1737 | { |
||
1738 | http.RequestContentType = match.Groups[1].Captures[0].Value; |
||
1739 | http.RequestContentSubtype = match.Groups[2].Captures[0].Value; |
||
1740 | if(match.Groups.Count >= 6) http.RequestCharset = match.Groups[5].Captures[0].Value.Trim('"'); |
||
1741 | } |
||
1742 | } |
||
1743 | |||
1744 | // soap action |
||
1745 | string soapAction = (string)http.RequestHeadersHash["soapaction"]; |
||
1746 | if(soapAction != null) |
||
1747 | { |
||
1748 | http.SoapAction = soapAction.Trim('"'); |
||
1749 | } |
||
1750 | } |
||
1751 | |||
1752 | private bool ParseBody(ParsePosition pos, HttpMessage http, bool request) |
||
1753 | { |
||
1754 | if(request && http.RequestMethod != "POST") return false; |
||
1755 | |||
1756 | // FIXME parse and save on-the-fly, dont wait util end of message |
||
1757 | |||
1758 | byte[] bin = new byte[8*1024]; |
||
1759 | int len = 0; |
||
1760 | int limit = (request ? http.RequestLength : http.ResponseLength); |
||
1761 | HttpEncoding encoding = (request ? http.RequestEncoding : http.ResponseEncoding); |
||
1762 | string contentType = (request ? http.RequestContentType : http.ResponseContentType); |
||
1763 | string contentSubtype = (request ? http.RequestContentSubtype : http.ResponseContentSubtype); |
||
1764 | string charset = (request ? http.RequestCharset : http.ResponseCharset); |
||
1765 | |||
1766 | for(byte b = pos.CurrentOctet(); !pos.IsEnd; b = pos.NextOctet()) |
||
1767 | { |
||
1768 | if(len >= bin.Length) |
||
1769 | { |
||
1770 | byte[] newBin = new byte[bin.Length*2]; |
||
1771 | Array.Copy(bin, newBin, len); |
||
1772 | bin = newBin; |
||
1773 | } |
||
1774 | |||
1775 | bin[len++] = b; |
||
1776 | if(limit > 0 && limit <= len) // full length |
||
1777 | { |
||
1778 | break; |
||
1779 | } |
||
1780 | } |
||
1781 | |||
1782 | string text = null; |
||
1783 | if(encoding == HttpEncoding.Identify && contentType == "text") |
||
1784 | { |
||
1785 | try |
||
1786 | { |
||
1787 | Encoding enc = Encoding.GetEncoding(charset == null ? (contentSubtype == "xml" ? "UTF-8" : "ASCII") : charset); |
||
1788 | text = enc.GetString(bin, 0, len); |
||
1789 | } |
||
1790 | catch(NotSupportedException) |
||
1791 | { |
||
1792 | Console.WriteLine("Unsupported encoding: " + charset); |
||
1793 | } |
||
1794 | } |
||
1795 | |||
1796 | if(request) |
||
1797 | { |
||
1798 | http.RequestLength = len; |
||
1799 | http.RequestBody = bin; |
||
1800 | http.RequestText = text; |
||
1801 | } |
||
1802 | else |
||
1803 | { |
||
1804 | http.ResponseLength = len; |
||
1805 | http.ResponseBody = bin; |
||
1806 | http.ResponseText = text; |
||
1807 | } |
||
1808 | |||
1809 | return (limit > 0 && limit <= len); // full length reached, need to go to next octet |
||
1810 | } |
||
1811 | |||
1812 | private void ParseResponseLine(ParsePosition pos, HttpMessage http) |
||
1813 | { |
||
1814 | // version |
||
1815 | string versionStr = GetUntilSpace(pos, 20); |
||
1816 | if(pos.IsEnd || versionStr == null || versionStr.Length == 0) |
||
1817 | throw new HttpParseException("HTTP version expected"); |
||
1818 | |||
1819 | if(versionStr == "HTTP/1.0") |
||
1820 | { |
||
1821 | http.ResponseVersion = HttpVersion.V1_0; |
||
1822 | } |
||
1823 | else if(versionStr == "HTTP/1.1") |
||
1824 | { |
||
1825 | http.ResponseVersion = HttpVersion.V1_1; |
||
1826 | } |
||
1827 | else |
||
1828 | { |
||
1829 | throw new HttpParseException("Unknown HTTP version: " + versionStr); |
||
1830 | } |
||
1831 | ExpectSpace(pos); |
||
1832 | |||
1833 | // status code |
||
1834 | string code = GetToken(pos, 3); |
||
1835 | if(code == null || code.Length != 3) |
||
1836 | throw new HttpParseException("Status code expected"); |
||
1837 | |||
1838 | try |
||
1839 | { |
||
1840 | int c = int.Parse(code); |
||
1841 | if(c < 100 || c >= 1000) throw new HttpParseException("Status code expected"); |
||
1842 | http.ResponseStatusCode = c; |
||
1843 | } |
||
1844 | catch(FormatException) |
||
1845 | { |
||
1846 | throw new HttpParseException("Status code expected"); |
||
1847 | } |
||
1848 | ExpectSpace(pos); |
||
1849 | |||
1850 | // status message |
||
1851 | http.ResponseStatusMessage = GetUntilEoL(pos, 0); |
||
1852 | |||
1853 | if(pos.IsEnd) |
||
1854 | throw new HttpParseException("Unexpected end of message"); |
||
1855 | |||
1856 | ExpectCRLF(pos); |
||
1857 | } |
||
1858 | |||
1859 | private void SetResponseProperties(HttpMessage http) |
||
1860 | { |
||
1861 | // length |
||
1862 | HttpHeader contentLength = (HttpHeader)http.ResponseHeadersHash["Content-Length"]; |
||
1863 | if(contentLength != null) |
||
1864 | { |
||
1865 | http.ResponseLength = int.Parse(contentLength.Values[0]); |
||
1866 | } |
||
1867 | |||
1868 | // encoding |
||
1869 | HttpHeader contentEncoding = (HttpHeader)http.ResponseHeadersHash["Content-Encoding"]; |
||
1870 | http.ResponseEncoding = ParseEncoding((contentEncoding == null) ? null : contentEncoding.Values[0]); |
||
1871 | |||
1872 | // type & charset |
||
1873 | HttpHeader contentType = (HttpHeader)http.ResponseHeadersHash["Content-Type"]; |
||
1874 | if(contentType != null) |
||
1875 | { |
||
1876 | Match match = Regex.Match(contentType.Values[0], @"^\s*(\S+)/(\S+)\s*($|;\s*(charset=""?(\S+)""?)?)"); |
||
1877 | if(match.Success) |
||
1878 | { |
||
1879 | http.ResponseContentType = match.Groups[1].Captures[0].Value; |
||
1880 | http.ResponseContentSubtype = match.Groups[2].Captures[0].Value; |
||
1881 | if(match.Groups.Count >= 6 && match.Groups[5].Captures.Count > 0) |
||
1882 | http.ResponseCharset = match.Groups[5].Captures[0].Value.Trim('"'); |
||
1883 | } |
||
1884 | } |
||
1885 | } |
||
1886 | } |
||
1887 | |||
1888 | public class HttpHeader |
||
1889 | { |
||
1890 | private string name; |
||
1891 | private string[] headerValues; |
||
1892 | |||
1893 | public string Name |
||
1894 | { |
||
1895 | get { return name; } |
||
1896 | } |
||
1897 | |||
1898 | public string[] Values |
||
1899 | { |
||
1900 | get { return headerValues; } |
||
1901 | } |
||
1902 | |||
1903 | internal HttpHeader() |
||
1904 | { |
||
1905 | } |
||
1906 | |||
1907 | internal HttpHeader(string name, string headerValue) |
||
1908 | { |
||
1909 | this.name = name; |
||
1910 | AddValue(headerValue); |
||
1911 | } |
||
1912 | |||
1913 | internal void AddValue(string value) |
||
1914 | { |
||
1915 | if(headerValues == null) |
||
1916 | { |
||
1917 | headerValues = new string[1]; |
||
1918 | } |
||
1919 | else |
||
1920 | { |
||
1921 | string[] newValues = new string[headerValues.Length + 1]; |
||
1922 | Array.Copy(headerValues, 0, newValues, 0, headerValues.Length); |
||
1923 | headerValues = newValues; |
||
1924 | } |
||
1925 | |||
1926 | headerValues[headerValues.Length-1] = value; |
||
1927 | } |
||
1928 | } |
||
1929 | |||
1930 | public class HttpMessage |
||
1931 | { |
||
1932 | private bool requestComplete = false; |
||
1933 | private HttpVersion requestVersion; |
||
1934 | private string requestMethod; |
||
1935 | private string requestUri; |
||
1936 | private LinkedList requestHeaders = new LinkedList(); |
||
1937 | private Hashtable requestHeadersHash = new Hashtable(); |
||
1938 | private int requestLength = -1; // -1 == unknown |
||
1939 | private HttpEncoding requestEncoding = HttpEncoding.Identify; |
||
1940 | private string requestContentType; |
||
1941 | private string requestContentSubtype; |
||
1942 | private string requestCharset; |
||
1943 | private string soapAction; |
||
1944 | private byte[] requestBody; |
||
1945 | private string requestText; |
||
1946 | private XmlMessage requestXml; |
||
1947 | |||
1948 | private bool responseComplete = false; |
||
1949 | private HttpVersion responseVersion; |
||
1950 | private int responseStatusCode; |
||
1951 | private string responseStatusMessage; |
||
1952 | private LinkedList responseHeaders = new LinkedList(); |
||
1953 | private Hashtable responseHeadersHash = new Hashtable(); |
||
1954 | private int responseLength = -1; // -1 == unknown |
||
1955 | private HttpEncoding responseEncoding = HttpEncoding.Identify; |
||
1956 | private string responseContentType; |
||
1957 | private string responseContentSubtype; |
||
1958 | private string responseCharset; |
||
1959 | private byte[] responseBody; |
||
1960 | private string responseText; |
||
1961 | private XmlMessage responseXml; |
||
1962 | |||
1963 | public bool RequestComplete |
||
1964 | { |
||
1965 | get { return requestComplete; } |
||
1966 | set { requestComplete = value; } |
||
1967 | } |
||
1968 | |||
1969 | public HttpVersion RequestVersion |
||
1970 | { |
||
1971 | get { return requestVersion; } |
||
1972 | set { requestVersion = value; } |
||
1973 | } |
||
1974 | |||
1975 | public string RequestMethod |
||
1976 | { |
||
1977 | get { return requestMethod; } |
||
1978 | set { requestMethod = value; } |
||
1979 | } |
||
1980 | |||
1981 | public string RequestUri |
||
1982 | { |
||
1983 | get { return requestUri; } |
||
1984 | set { requestUri = value; } |
||
1985 | } |
||
1986 | |||
1987 | public LinkedList RequestHeaders |
||
1988 | { |
||
1989 | get { return requestHeaders; } |
||
1990 | } |
||
1991 | |||
1992 | public IDictionary RequestHeadersHash |
||
1993 | { |
||
1994 | get { return requestHeadersHash; } |
||
1995 | } |
||
1996 | |||
1997 | public int RequestLength |
||
1998 | { |
||
1999 | get { return requestLength; } |
||
2000 | set { requestLength = value; } |
||
2001 | } |
||
2002 | |||
2003 | public HttpEncoding RequestEncoding |
||
2004 | { |
||
2005 | get { return requestEncoding; } |
||
2006 | set { requestEncoding = value; } |
||
2007 | } |
||
2008 | |||
2009 | public string RequestContentType |
||
2010 | { |
||
2011 | get { return requestContentType; } |
||
2012 | set { requestContentType = value; } |
||
2013 | } |
||
2014 | |||
2015 | public string RequestContentSubtype |
||
2016 | { |
||
2017 | get { return requestContentSubtype; } |
||
2018 | set { requestContentSubtype = value; } |
||
2019 | } |
||
2020 | |||
2021 | public string RequestCharset |
||
2022 | { |
||
2023 | get { return requestCharset; } |
||
2024 | set { requestCharset = value; } |
||
2025 | } |
||
2026 | |||
2027 | public string SoapAction |
||
2028 | { |
||
2029 | get { return soapAction; } |
||
2030 | set { soapAction = value; } |
||
2031 | } |
||
2032 | |||
2033 | public byte[] RequestBody |
||
2034 | { |
||
2035 | get { return requestBody; } |
||
2036 | set { requestBody = value; } |
||
2037 | } |
||
2038 | |||
2039 | public string RequestText |
||
2040 | { |
||
2041 | get { return requestText; } |
||
2042 | set { requestText = value; } |
||
2043 | } |
||
2044 | |||
2045 | public XmlMessage RequestXml |
||
2046 | { |
||
2047 | get { return requestXml; } |
||
2048 | set { requestXml = value; } |
||
2049 | } |
||
2050 | |||
2051 | public bool ResponseComplete |
||
2052 | { |
||
2053 | get { return responseComplete; } |
||
2054 | set { responseComplete = value; } |
||
2055 | } |
||
2056 | |||
2057 | public HttpVersion ResponseVersion |
||
2058 | { |
||
2059 | get { return responseVersion; } |
||
2060 | set { responseVersion = value; } |
||
2061 | } |
||
2062 | |||
2063 | public int ResponseStatusCode |
||
2064 | { |
||
2065 | get { return responseStatusCode; } |
||
2066 | set { responseStatusCode = value; } |
||
2067 | } |
||
2068 | |||
2069 | public string ResponseStatusMessage |
||
2070 | { |
||
2071 | get { return responseStatusMessage; } |
||
2072 | set { responseStatusMessage = value; } |
||
2073 | } |
||
2074 | |||
2075 | public LinkedList ResponseHeaders |
||
2076 | { |
||
2077 | get { return responseHeaders; } |
||
2078 | } |
||
2079 | |||
2080 | public IDictionary ResponseHeadersHash |
||
2081 | { |
||
2082 | get { return responseHeadersHash; } |
||
2083 | } |
||
2084 | |||
2085 | public int ResponseLength |
||
2086 | { |
||
2087 | get { return responseLength; } |
||
2088 | set { responseLength = value; } |
||
2089 | } |
||
2090 | |||
2091 | public HttpEncoding ResponseEncoding |
||
2092 | { |
||
2093 | get { return responseEncoding; } |
||
2094 | set { responseEncoding = value; } |
||
2095 | } |
||
2096 | |||
2097 | public string ResponseContentType |
||
2098 | { |
||
2099 | get { return responseContentType; } |
||
2100 | set { responseContentType = value; } |
||
2101 | } |
||
2102 | |||
2103 | public string ResponseContentSubtype |
||
2104 | { |
||
2105 | get { return responseContentSubtype; } |
||
2106 | set { responseContentSubtype = value; } |
||
2107 | } |
||
2108 | |||
2109 | public string ResponseCharset |
||
2110 | { |
||
2111 | get { return responseCharset; } |
||
2112 | set { responseCharset = value; } |
||
2113 | } |
||
2114 | |||
2115 | public byte[] ResponseBody |
||
2116 | { |
||
2117 | get { return responseBody; } |
||
2118 | set { responseBody = value; } |
||
2119 | } |
||
2120 | |||
2121 | public string ResponseText |
||
2122 | { |
||
2123 | get { return responseText; } |
||
2124 | set { responseText = value; } |
||
2125 | } |
||
2126 | |||
2127 | public XmlMessage ResponseXml |
||
2128 | { |
||
2129 | get { return responseXml; } |
||
2130 | set { responseXml = value; } |
||
2131 | } |
||
2132 | |||
2133 | public void AddRequestHeader(string name, string headerValue) |
||
2134 | { |
||
2135 | requestHeaders.Add(new HttpHeader(name, headerValue)); |
||
2136 | requestHeadersHash.Add(name, headerValue); |
||
2137 | } |
||
2138 | |||
2139 | public void AddResponseHeader(string name, string headerValue) |
||
2140 | { |
||
2141 | HttpHeader header = (HttpHeader)responseHeadersHash[name]; |
||
2142 | if(header == null) |
||
2143 | { |
||
2144 | header = new HttpHeader(name, headerValue); |
||
2145 | responseHeaders.Add(header); |
||
2146 | responseHeadersHash.Add(name, header); |
||
2147 | } |
||
2148 | else |
||
2149 | { |
||
2150 | header.AddValue(headerValue); |
||
2151 | } |
||
2152 | } |
||
2153 | |||
2154 | public override string ToString() // FIXME delete the method |
||
2155 | { |
||
2156 | return (soapAction != null ? soapAction |
||
2157 | : (requestMethod == null ? "" : requestMethod) + " " + (requestUri == null ? "" : requestUri)); |
||
2158 | } |
||
2159 | |||
2160 | public event TcpEventHandler Update; |
||
2161 | |||
2162 | protected virtual void OnUpdate(TcpEventArgs e) |
||
2163 | { |
||
2164 | if(Update != null) |
||
2165 | { |
||
2166 | Update(this, e); |
||
2167 | } |
||
2168 | } |
||
2169 | |||
2170 | internal void UpdateHttpMessage() |
||
2171 | { |
||
2172 | OnUpdate(new TcpEventArgs()); |
||
2173 | } |
||
2174 | } |
||
2175 | |||
2176 | internal class HttpParseException : Exception |
||
2177 | { |
||
2178 | public HttpParseException() : base() |
||
2179 | { |
||
2180 | } |
||
2181 | |||
2182 | public HttpParseException(string message) : base(message) |
||
2183 | { |
||
2184 | } |
||
2185 | |||
2186 | public HttpParseException(System.Runtime.Serialization.SerializationInfo info, |
||
2187 | System.Runtime.Serialization.StreamingContext context) : base(info, context) |
||
2188 | { |
||
2189 | } |
||
2190 | |||
2191 | public HttpParseException(string message, Exception innerException) : base(message, innerException) |
||
2192 | { |
||
2193 | } |
||
2194 | } |
||
2195 | |||
2196 | public class XmlMessage |
||
2197 | { |
||
2198 | private XmlDocument xml; |
||
2199 | private XmlException parseException; |
||
2200 | |||
2201 | public XmlDocument Xml |
||
2202 | { |
||
2203 | get { return xml; } |
||
2204 | } |
||
2205 | |||
2206 | public XmlException ParseException |
||
2207 | { |
||
2208 | get { return parseException; } |
||
2209 | } |
||
2210 | |||
2211 | internal XmlMessage(string text) |
||
2212 | { |
||
2213 | try |
||
2214 | { |
||
2215 | this.xml = new XmlDocument(); |
||
2216 | this.xml.LoadXml(text); |
||
2217 | } |
||
2218 | catch(XmlException ex) |
||
2219 | { |
||
2220 | parseException = ex; |
||
2221 | } |
||
2222 | } |
||
2223 | } |
||
2224 | |||
2225 | public class TcpMessage |
||
2226 | { |
||
2227 | private TcpMessageDirection direction; |
||
2228 | private byte[] bytes; |
||
2229 | private int length = 0; |
||
2230 | private DateTime timestamp; |
||
2231 | |||
2232 | public TcpMessageDirection Direction |
||
2233 | { |
||
2234 | get { return direction; } |
||
2235 | set { direction = value; } |
||
2236 | } |
||
2237 | |||
2238 | public int Length |
||
2239 | { |
||
2240 | get { return length; } |
||
2241 | } |
||
2242 | |||
2243 | public byte[] Bytes |
||
2244 | { |
||
2245 | get |
||
2246 | { |
||
2247 | return bytes; |
||
2248 | } |
||
2249 | set |
||
2250 | { |
||
2251 | length = 0; |
||
2252 | Append(value); |
||
2253 | } |
||
2254 | } |
||
2255 | |||
2256 | public DateTime Timestamp |
||
2257 | { |
||
2258 | get { return timestamp; } |
||
2259 | } |
||
2260 | |||
2261 | internal TcpMessage() |
||
2262 | { |
||
2263 | this.timestamp = DateTime.Now; |
||
2264 | this.bytes = new byte[1024]; |
||
2265 | } |
||
2266 | |||
2267 | internal TcpMessage(byte[] bytes, int length) |
||
2268 | { |
||
2269 | this.timestamp = DateTime.Now; |
||
2270 | this.bytes = new byte[length]; |
||
2271 | this.length = length; |
||
2272 | Array.Copy(this.bytes, bytes, length); |
||
2273 | } |
||
2274 | |||
2275 | internal TcpMessage Append(byte[] newBytes) |
||
2276 | { |
||
2277 | if(newBytes == null) return this; |
||
2278 | |||
2279 | return Append(newBytes, newBytes.Length); |
||
2280 | } |
||
2281 | |||
2282 | internal TcpMessage Append(byte[] newBytes, int length) |
||
2283 | { |
||
2284 | if(newBytes == null) return this; |
||
2285 | |||
2286 | lock(this) |
||
2287 | { |
||
2288 | // grow array |
||
2289 | if(this.length + length > bytes.Length) |
||
2290 | { |
||
2291 | int newLength = bytes.Length; |
||
2292 | while(this.length + length > newLength) newLength *= 2; |
||
2293 | byte[] newArray = new byte[newLength]; |
||
2294 | |||
2295 | Array.Copy(bytes, newArray, this.length); |
||
2296 | bytes = newArray; |
||
2297 | } |
||
2298 | |||
2299 | // store received bytes |
||
2300 | Array.Copy(newBytes, 0, bytes, this.length, length); |
||
2301 | this.length += length; |
||
2302 | |||
2303 | return this; |
||
2304 | } |
||
2305 | } |
||
2306 | } |
||
2307 | |||
2308 | } |