Mercurial > hg > ucis.core
annotate Net/HTTP.cs @ 54:ba4e2cb031e0
Added general purpose tar archive reader class
| author | Ivo Smits <Ivo@UCIS.nl> |
|---|---|
| date | Wed, 02 Oct 2013 21:17:30 +0200 |
| parents | 8df7f4dc5615 |
| children | 50d4aed66c67 |
| rev | line source |
|---|---|
| 0 | 1 ???using System; |
| 2 using System.Collections.Generic; | |
| 3 using System.IO; | |
| 3 | 4 using System.Net; |
| 10 | 5 using System.Net.Security; |
| 3 | 6 using System.Net.Sockets; |
| 10 | 7 using System.Security.Cryptography.X509Certificates; |
| 0 | 8 using System.Text; |
| 6 | 9 using UCIS.Net; |
| 3 | 10 using UCIS.Util; |
| 11 using HTTPHeader = System.Collections.Generic.KeyValuePair<string, string>; | |
| 0 | 12 |
| 13 namespace UCIS.Net.HTTP { | |
| 3 | 14 public class HTTPServer : TCPServer.IModule, IDisposable { |
| 15 public IHTTPContentProvider ContentProvider { get; set; } | |
| 16 public Boolean ServeFlashPolicyFile { get; set; } | |
| 10 | 17 public X509Certificate SSLCertificate { get; set; } |
| 3 | 18 private Socket Listener = null; |
| 0 | 19 |
| 3 | 20 public HTTPServer() { } |
| 0 | 21 |
| 3 | 22 public void Listen(int port) { |
| 23 Listen(new IPEndPoint(IPAddress.Any, port)); | |
| 0 | 24 } |
| 25 | |
| 3 | 26 public void Listen(EndPoint localep) { |
| 27 if (Listener != null) throw new InvalidOperationException("A listener exists"); | |
| 28 Listener = new Socket(localep.AddressFamily, SocketType.Stream, ProtocolType.Tcp); | |
| 29 Listener.Bind(localep); | |
| 30 Listener.Listen(5); | |
| 31 Listener.BeginAccept(AcceptCallback, null); | |
| 0 | 32 } |
| 33 | |
| 3 | 34 private void AcceptCallback(IAsyncResult ar) { |
| 35 try { | |
| 36 Socket socket = Listener.EndAccept(ar); | |
| 10 | 37 if (SSLCertificate != null) { |
| 38 SslStream ssl = new SslStream(new NetworkStream(socket, true)); | |
| 39 ssl.BeginAuthenticateAsServer(SSLCertificate, SslAuthenticationCallback, new Object[] { socket, ssl }); | |
| 40 } else { | |
| 41 new HTTPContext(this, socket); | |
| 42 } | |
| 3 | 43 } catch (Exception) { } |
| 44 try { | |
| 45 Listener.BeginAccept(AcceptCallback, null); | |
| 46 } catch (Exception) { } | |
| 0 | 47 } |
| 48 | |
| 10 | 49 private void SslAuthenticationCallback(IAsyncResult ar) { |
| 50 Object[] args = (Object[])ar.AsyncState; | |
| 51 Socket socket = (Socket)args[0]; | |
| 52 SslStream ssl = (SslStream)args[1]; | |
| 53 try { | |
| 54 ssl.EndAuthenticateAsServer(ar); | |
| 55 new HTTPContext(this, ssl, socket); | |
| 56 } catch (Exception) { } | |
| 57 } | |
| 58 | |
| 3 | 59 public void Dispose() { |
| 60 if (Listener != null) Listener.Close(); | |
| 0 | 61 } |
| 62 | |
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HTTP Server: enable KeepAlive option on TCP sockets
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63 public void HandleClient(Socket client) { |
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64 new HTTPContext(this, client); |
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HTTP Server: enable KeepAlive option on TCP sockets
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65 } |
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HTTP Server: enable KeepAlive option on TCP sockets
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66 |
| 3 | 67 bool TCPServer.IModule.Accept(TCPStream stream) { |
| 68 new HTTPContext(this, stream); | |
| 69 return false; | |
| 0 | 70 } |
| 71 } | |
| 72 | |
| 73 public class HTTPContext { | |
| 3 | 74 public HTTPServer Server { get; private set; } |
| 75 public EndPoint LocalEndPoint { get; private set; } | |
| 76 public EndPoint RemoteEndPoint { get; private set; } | |
| 77 | |
| 78 public String RequestMethod { get; private set; } | |
| 79 public String RequestPath { get; private set; } | |
| 80 public String RequestQuery { get; private set; } | |
| 81 public int HTTPVersion { get; set; } | |
| 82 | |
| 83 public Socket Socket { get; private set; } | |
| 84 public Boolean SuppressStandardHeaders { get; set; } | |
| 6 | 85 public TCPStream TCPStream { get; private set; } |
| 3 | 86 |
| 87 private StreamWriter Writer; | |
| 6 | 88 private PrebufferingStream Reader; |
| 3 | 89 private List<HTTPHeader> RequestHeaders; |
| 90 private HTTPConnectionState State = HTTPConnectionState.Starting; | |
| 91 | |
| 10 | 92 |
| 3 | 93 private enum HTTPConnectionState { |
| 94 Starting = 0, | |
| 95 ReceivingRequest = 1, | |
| 96 ProcessingRequest = 2, | |
| 97 SendingHeaders = 3, | |
| 98 SendingContent = 4, | |
| 99 Closed = 5, | |
| 100 } | |
| 101 | |
| 10 | 102 public HTTPContext(HTTPServer server, TCPStream stream) : this(server, stream, stream.Socket) { } |
| 103 public HTTPContext(HTTPServer server, Socket socket) : this(server, null, socket) { } | |
| 104 public HTTPContext(HTTPServer server, Stream stream, Socket socket) { | |
| 3 | 105 this.Server = server; |
| 10 | 106 this.Socket = socket; |
| 107 if (socket != null) { | |
| 108 this.LocalEndPoint = socket.LocalEndPoint; | |
| 109 this.RemoteEndPoint = socket.RemoteEndPoint; | |
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110 if (socket.ProtocolType == ProtocolType.Tcp) socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true); |
| 10 | 111 if (stream == null) stream = new NetworkStream(socket, true); |
| 112 } | |
| 6 | 113 Init(stream); |
| 3 | 114 } |
| 115 | |
| 6 | 116 private void Init(Stream Stream) { |
| 3 | 117 Writer = new StreamWriter(Stream, Encoding.ASCII); |
| 118 Writer.NewLine = "\r\n"; | |
| 119 Writer.AutoFlush = true; | |
| 6 | 120 Reader = new PrebufferingStream(Stream); |
| 121 Reader.BeginPrebuffering(PrebufferCallback, null); | |
| 3 | 122 } |
| 123 | |
| 124 private String ReadLine() { | |
| 125 StringBuilder s = new StringBuilder(); | |
| 126 while (true) { | |
| 6 | 127 int b = Reader.ReadByte(); |
| 3 | 128 if (b == -1) { |
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129 if (s.Length == 0) return null; |
| 3 | 130 break; |
| 131 } else if (b == 13) { | |
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132 } else if (b == 10 || b == 0) { |
| 3 | 133 break; |
| 134 } else { | |
| 135 s.Append((Char)b); | |
| 136 } | |
| 137 } | |
| 138 return s.ToString(); | |
| 139 } | |
| 140 | |
| 6 | 141 private void PrebufferCallback(IAsyncResult ar) { |
| 3 | 142 State = HTTPConnectionState.ReceivingRequest; |
| 143 try { | |
| 6 | 144 Reader.EndPrebuffering(ar); |
| 3 | 145 String line = ReadLine(); |
| 146 if (line == null) { | |
| 147 Close(); | |
| 148 return; | |
| 149 } | |
| 150 if (Server.ServeFlashPolicyFile && line[0] == '<') { //<policy-file-request/> | |
| 151 Writer.WriteLine("<cross-domain-policy><allow-access-from domain=\"*\" to-ports=\"*\" /></cross-domain-policy>"); | |
| 6 | 152 Reader.WriteByte(0); |
| 3 | 153 Close(); |
| 154 return; | |
| 155 } | |
| 156 String[] request = line.Split(' '); | |
| 157 if (request.Length != 3) goto SendError400AndClose; | |
| 158 RequestMethod = request[0]; | |
| 159 String RequestAddress = request[1]; | |
| 160 switch (request[2]) { | |
| 161 case "HTTP/1.0": HTTPVersion = 10; break; | |
| 162 case "HTTP/1.1": HTTPVersion = 11; break; | |
| 163 default: goto SendError400AndClose; | |
| 164 } | |
| 165 request = RequestAddress.Split(new Char[] { '?' }); | |
| 166 RequestPath = Uri.UnescapeDataString(request[0]); | |
| 167 RequestQuery = request.Length > 1 ? request[1] : null; | |
| 168 RequestHeaders = new List<HTTPHeader>(); | |
| 169 while (true) { | |
| 170 line = ReadLine(); | |
| 171 if (line == null) goto SendError400AndClose; | |
| 172 if (line.Length == 0) break; | |
| 173 request = line.Split(new String[] { ": " }, 2, StringSplitOptions.None); | |
| 174 if (request.Length != 2) goto SendError400AndClose; | |
| 175 RequestHeaders.Add(new HTTPHeader(request[0], request[1])); | |
| 176 } | |
| 177 IHTTPContentProvider content = Server.ContentProvider; | |
| 178 if (content == null) goto SendError500AndClose; | |
| 179 State = HTTPConnectionState.ProcessingRequest; | |
| 180 content.ServeRequest(this); | |
| 181 } catch (Exception ex) { | |
| 182 Console.Error.WriteLine(ex); | |
| 183 switch (State) { | |
| 184 case HTTPConnectionState.ProcessingRequest: goto SendError500AndClose; | |
| 185 default: | |
| 186 Close(); | |
| 187 break; | |
| 188 } | |
| 189 } | |
| 190 return; | |
| 191 | |
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192 SendError400AndClose: |
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193 State = HTTPConnectionState.ProcessingRequest; |
| 3 | 194 SendErrorAndClose(400); |
| 195 return; | |
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196 SendError500AndClose: |
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197 State = HTTPConnectionState.ProcessingRequest; |
| 3 | 198 SendErrorAndClose(500); |
| 199 return; | |
| 200 } | |
| 201 | |
| 202 public String GetRequestHeader(String name) { | |
| 203 if (State != HTTPConnectionState.ProcessingRequest && State != HTTPConnectionState.SendingHeaders && State != HTTPConnectionState.SendingContent) throw new InvalidOperationException(); | |
| 204 foreach (HTTPHeader h in RequestHeaders) { | |
| 205 if (name.Equals(h.Key, StringComparison.OrdinalIgnoreCase)) return h.Value; | |
| 206 } | |
| 207 return null; | |
| 208 } | |
| 209 public String[] GetRequestHeaders(String name) { | |
| 210 if (State != HTTPConnectionState.ProcessingRequest && State != HTTPConnectionState.SendingHeaders && State != HTTPConnectionState.SendingContent) throw new InvalidOperationException(); | |
| 211 String[] items = new String[0]; | |
| 212 foreach (HTTPHeader h in RequestHeaders) { | |
| 213 if (name.Equals(h.Key, StringComparison.OrdinalIgnoreCase)) ArrayUtil.Add(ref items, h.Value); | |
| 214 } | |
| 215 return items; | |
| 216 } | |
| 217 | |
| 218 public void SendErrorAndClose(int state) { | |
| 219 try { | |
| 220 SendStatus(state); | |
| 221 GetResponseStream(); | |
| 222 } catch (Exception ex) { | |
| 223 Console.Error.WriteLine(ex); | |
| 224 } | |
| 225 Close(); | |
| 226 } | |
| 227 | |
| 228 public void SendStatus(int code) { | |
| 229 String message; | |
| 230 switch (code) { | |
| 231 case 101: message = "Switching Protocols"; break; | |
| 232 case 200: message = "OK"; break; | |
| 233 case 400: message = "Bad Request"; break; | |
| 234 case 404: message = "Not Found"; break; | |
| 235 case 500: message = "Internal Server Error"; break; | |
| 236 default: message = "Unknown Status"; break; | |
| 237 } | |
| 238 SendStatus(code, message); | |
| 239 } | |
| 240 public void SendStatus(int code, String message) { | |
| 241 if (State != HTTPConnectionState.ProcessingRequest) throw new InvalidOperationException(); | |
| 242 StringBuilder sb = new StringBuilder(); | |
| 243 sb.Append("HTTP/"); | |
| 244 switch (HTTPVersion) { | |
| 245 case 10: sb.Append("1.0"); break; | |
| 246 case 11: sb.Append("1.1"); break; | |
| 247 default: throw new ArgumentException("The HTTP version is not supported", "HTTPVersion"); | |
| 248 } | |
| 249 sb.Append(" "); | |
| 250 sb.Append(code); | |
| 251 sb.Append(" "); | |
| 252 sb.Append(message); | |
| 253 Writer.WriteLine(sb.ToString()); | |
| 254 State = HTTPConnectionState.SendingHeaders; | |
| 255 if (!SuppressStandardHeaders) { | |
| 256 SendHeader("Expires", "Expires: Sun, 1 Jan 2000 00:00:00 GMT"); | |
| 257 SendHeader("Cache-Control", "no-store, no-cache, must-revalidate"); | |
| 258 SendHeader("Cache-Control", "post-check=0, pre-check=0"); | |
| 259 SendHeader("Pragma", "no-cache"); | |
| 260 SendHeader("Server", "UCIS Webserver"); | |
| 261 SendHeader("Connection", "Close"); | |
| 262 } | |
| 263 } | |
| 264 public void SendHeader(String name, String value) { | |
| 265 if (State == HTTPConnectionState.ProcessingRequest) SendStatus(200); | |
| 266 if (State != HTTPConnectionState.SendingHeaders) throw new InvalidOperationException(); | |
| 267 Writer.WriteLine(name + ": " + value); | |
| 268 } | |
| 269 public Stream GetResponseStream() { | |
| 270 if (State == HTTPConnectionState.ProcessingRequest) SendStatus(200); | |
| 271 if (State == HTTPConnectionState.SendingHeaders) { | |
| 272 Writer.WriteLine(); | |
| 273 State = HTTPConnectionState.SendingContent; | |
| 274 } | |
| 275 if (State != HTTPConnectionState.SendingContent) throw new InvalidOperationException(); | |
| 6 | 276 return Reader; |
| 3 | 277 } |
| 278 | |
| 279 public void Close() { | |
| 280 if (State == HTTPConnectionState.Closed) return; | |
| 6 | 281 Reader.Close(); |
| 3 | 282 State = HTTPConnectionState.Closed; |
| 283 } | |
| 0 | 284 } |
| 285 | |
| 3 | 286 public interface IHTTPContentProvider { |
| 287 void ServeRequest(HTTPContext context); | |
| 288 } | |
| 12 | 289 public delegate void HTTPContentProviderDelegate(HTTPContext context); |
| 290 public class HTTPContentProviderFunction : IHTTPContentProvider { | |
| 291 public HTTPContentProviderDelegate Handler { get; private set; } | |
| 292 public HTTPContentProviderFunction(HTTPContentProviderDelegate handler) { | |
| 293 this.Handler = handler; | |
| 294 } | |
| 295 public void ServeRequest(HTTPContext context) { | |
| 296 Handler(context); | |
| 297 } | |
| 298 } | |
| 3 | 299 public class HTTPPathSelector : IHTTPContentProvider { |
| 300 private List<KeyValuePair<String, IHTTPContentProvider>> Prefixes; | |
| 301 private StringComparison PrefixComparison; | |
| 302 public HTTPPathSelector() : this(false) { } | |
| 303 public HTTPPathSelector(Boolean caseSensitive) { | |
| 304 Prefixes = new List<KeyValuePair<string, IHTTPContentProvider>>(); | |
| 305 PrefixComparison = caseSensitive ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase; | |
| 306 } | |
| 307 public void AddPrefix(String prefix, IHTTPContentProvider contentProvider) { | |
| 308 Prefixes.Add(new KeyValuePair<string, IHTTPContentProvider>(prefix, contentProvider)); | |
| 309 } | |
| 310 public void DeletePrefix(String prefix) { | |
| 311 Prefixes.RemoveAll(delegate(KeyValuePair<string, IHTTPContentProvider> item) { return prefix.Equals(item.Key, PrefixComparison); }); | |
| 312 } | |
| 313 public void ServeRequest(HTTPContext context) { | |
| 314 KeyValuePair<string, IHTTPContentProvider> c = Prefixes.Find(delegate(KeyValuePair<string, IHTTPContentProvider> item) { return context.RequestPath.StartsWith(item.Key, PrefixComparison); }); | |
| 315 if (c.Value != null) { | |
| 316 c.Value.ServeRequest(context); | |
| 317 } else { | |
| 318 context.SendErrorAndClose(404); | |
| 319 } | |
| 320 } | |
| 321 } | |
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322 public class HTTPStaticContent : IHTTPContentProvider { |
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323 public ArraySegment<Byte> ContentBuffer { get; set; } |
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324 public String ContentType { get; set; } |
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325 public HTTPStaticContent() : this(new ArraySegment<Byte>()) { } |
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326 public HTTPStaticContent(ArraySegment<Byte> content) : this(content, "application/octet-stream") { } |
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327 public HTTPStaticContent(String content, String contentType) : this(Encoding.UTF8.GetBytes(content), contentType) { } |
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328 public HTTPStaticContent(String contentType) : this(new ArraySegment<Byte>(), contentType) { } |
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329 public HTTPStaticContent(Byte[] content, String contentType) : this(new ArraySegment<Byte>(content), contentType) { } |
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330 public HTTPStaticContent(ArraySegment<Byte> content, String contentType) { |
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331 this.ContentBuffer = content; |
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332 this.ContentType = contentType; |
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333 } |
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334 public void SetContent(Byte[] bytes) { ContentBuffer = new ArraySegment<byte>(bytes); } |
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335 public void SetContent(Byte[] bytes, int offset, int count) { ContentBuffer = new ArraySegment<byte>(bytes, offset, count); } |
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336 public void SetContent(String content, Encoding encoding) { SetContent(encoding.GetBytes(content)); } |
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337 public void SetContent(String content) { SetContent(content, Encoding.UTF8); } |
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338 public void ServeRequest(HTTPContext context) { |
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339 ArraySegment<Byte> content = ContentBuffer; |
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340 if (content.Array == null) { |
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341 context.SendErrorAndClose(404); |
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342 return; |
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343 } |
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344 String contentType = ContentType; |
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345 context.SendStatus(200); |
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346 if (contentType != null) context.SendHeader("Content-Type", contentType); |
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347 context.SendHeader("Content-Length", content.Count.ToString()); |
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348 Stream response = context.GetResponseStream(); |
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349 response.Write(content.Array, content.Offset, content.Count); |
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350 response.Close(); |
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351 } |
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352 } |
| 3 | 353 public class HTTPFileProvider : IHTTPContentProvider { |
| 354 public String FileName { get; private set; } | |
| 355 public String ContentType { get; private set; } | |
| 356 public HTTPFileProvider(String fileName) : this(fileName, "application/octet-stream") { } | |
| 357 public HTTPFileProvider(String fileName, String contentType) { | |
| 358 this.FileName = fileName; | |
| 359 this.ContentType = contentType; | |
| 360 } | |
| 361 public void ServeRequest(HTTPContext context) { | |
| 362 if (File.Exists(FileName)) { | |
| 363 using (FileStream fs = File.OpenRead(FileName)) { | |
| 364 context.SendStatus(200); | |
| 365 context.SendHeader("Content-Type", ContentType); | |
| 366 context.SendHeader("Content-Length", fs.Length.ToString()); | |
| 367 long left = fs.Length; | |
| 368 Stream response = context.GetResponseStream(); | |
| 369 byte[] buffer = new byte[1024 * 10]; | |
| 370 while (fs.CanRead) { | |
| 371 int len = fs.Read(buffer, 0, buffer.Length); | |
| 372 if (len <= 0) break; | |
| 373 left -= len; | |
| 374 response.Write(buffer, 0, len); | |
| 375 } | |
| 376 response.Close(); | |
| 377 } | |
| 378 } else { | |
| 379 context.SendErrorAndClose(404); | |
| 380 } | |
| 381 } | |
| 0 | 382 } |
| 3 | 383 public class HTTPUnTarchiveProvider : IHTTPContentProvider { |
| 384 public String TarFileName { get; private set; } | |
| 385 public HTTPUnTarchiveProvider(String tarFile) { | |
| 386 this.TarFileName = tarFile; | |
| 387 } | |
| 388 public void ServeRequest(HTTPContext context) { | |
| 389 if (!File.Exists(TarFileName)) { | |
| 390 context.SendErrorAndClose(404); | |
| 391 return; | |
| 392 } | |
| 393 String reqname1 = context.RequestPath; | |
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394 if (reqname1.StartsWith("/")) reqname1 = reqname1.Substring(1); |
| 3 | 395 String reqname2 = reqname1; |
| 396 if (reqname2.Length > 0 && !reqname2.EndsWith("/")) reqname2 += "/"; | |
| 397 reqname2 += "index.htm"; | |
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398 foreach (TarchiveEntry file in new TarchiveReader(TarFileName)) { |
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399 if (!file.IsFile) continue; |
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400 if (!reqname1.Equals(file.Name, StringComparison.OrdinalIgnoreCase) && !reqname2.Equals(file.Name, StringComparison.OrdinalIgnoreCase)) continue; |
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401 context.SendStatus(200); |
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402 context.SendHeader("Content-Length", file.Size.ToString()); |
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403 String ctype = null; |
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404 switch (Path.GetExtension(file.Name).ToLowerInvariant()) { |
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405 case ".txt": ctype = "text/plain"; break; |
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406 case ".htm": |
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407 case ".html": ctype = "text/html"; break; |
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408 case ".css": ctype = "text/css"; break; |
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409 case ".js": ctype = "application/x-javascript"; break; |
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410 case ".png": ctype = "image/png"; break; |
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411 case ".jpg": |
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412 case ".jpeg": ctype = "image/jpeg"; break; |
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413 case ".gif": ctype = "image/gif"; break; |
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414 case ".ico": ctype = "image/x-icon"; break; |
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415 } |
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416 if (ctype != null) context.SendHeader("Content-Type", ctype); |
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417 using (Stream response = context.GetResponseStream(), source = file.GetStream()) { |
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418 byte[] buffer = new byte[Math.Min(source.Length, 1024 * 10)]; |
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419 while (source.CanRead) { |
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420 int len = source.Read(buffer, 0, buffer.Length); |
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421 if (len <= 0) break; |
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422 response.Write(buffer, 0, len); |
| 3 | 423 } |
| 424 } | |
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425 return; |
| 3 | 426 } |
| 427 context.SendErrorAndClose(404); | |
| 428 } | |
| 0 | 429 } |
| 430 } |