mcs/class/System/System.Net/HttpWebResponse.cs

   1 //
   2 // System.Net.HttpWebResponse
   3 //
   4 // Authors:
   5 //      Lawrence Pit (loz@cable.a2000.nl)
   6 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //      Daniel Nauck    (dna(at)mono-project(dot)de)
   8 //
   9 // (c) 2002 Lawrence Pit
  10 // (c) 2003 Ximian, Inc. (http://www.ximian.com)
  11 // (c) 2008 Daniel Nauck
  12 //
  13
  14 //
  15 // Permission is hereby granted, free of charge, to any person obtaining
  16 // a copy of this software and associated documentation files (the
  17 // "Software"), to deal in the Software without restriction, including
  18 // without limitation the rights to use, copy, modify, merge, publish,
  19 // distribute, sublicense, and/or sell copies of the Software, and to
  20 // permit persons to whom the Software is furnished to do so, subject to
  21 // the following conditions:
  22 //
  23 // The above copyright notice and this permission notice shall be
  24 // included in all copies or substantial portions of the Software.
  25 //
  26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33 //
  34
  35 using System;
  36 using System.Collections;
  37 using System.Globalization;
  38 using System.IO;
  39 using System.IO.Compression;
  40 using System.Net.Sockets;
  41 using System.Runtime.Serialization;
  42 using System.Text;
  43
  44 namespace System.Net
  45 {
  46         [Serializable]
  47         public class HttpWebResponse : WebResponse, ISerializable, IDisposable {
  48                 Uri uri;
  49                 WebHeaderCollection webHeaders;
  50                 CookieCollection cookieCollection;
  51                 string method;
  52                 Version version;
  53                 HttpStatusCode statusCode;
  54                 string statusDescription;
  55                 long contentLength;
  56                 string contentType;
  57                 CookieContainer cookie_container;
  58
  59                 bool disposed;
  60                 Stream stream;
  61
  62                 // Constructors
  63
  64                 internal HttpWebResponse (Uri uri, string method, WebConnectionData data, CookieContainer container)
  65                 {
  66                         this.uri = uri;
  67                         this.method = method;
  68                         webHeaders = data.Headers;
  69                         version = data.Version;
  70                         statusCode = (HttpStatusCode) data.StatusCode;
  71                         statusDescription = data.StatusDescription;
  72                         stream = data.stream;
  73                         contentLength = -1;
  74
  75                         try {
  76                                 string cl = webHeaders ["Content-Length"];
  77                                 if (String.IsNullOrEmpty (cl) || !Int64.TryParse (cl, out contentLength))
  78                                         contentLength = -1;
  79                         } catch (Exception) {
  80                                 contentLength = -1;
  81                         }
  82
  83                         if (container != null) {
  84                                 this.cookie_container = container;
  85                                 FillCookies ();
  86                         }
  87
  88                         string content_encoding = webHeaders ["Content-Encoding"];
  89                         if (content_encoding == "gzip" && (data.request.AutomaticDecompression & DecompressionMethods.GZip) != 0)
  90                                 stream = new GZipStream (stream, CompressionMode.Decompress);
  91                         else if (content_encoding == "deflate" && (data.request.AutomaticDecompression & DecompressionMethods.Deflate) != 0)
  92                                 stream = new DeflateStream (stream, CompressionMode.Decompress);
  93                 }
  94
  95                 [Obsolete ("Serialization is obsoleted for this type", false)]
  96                 protected HttpWebResponse (SerializationInfo serializationInfo, StreamingContext streamingContext)
  97                 {
  98                         SerializationInfo info = serializationInfo;
  99
 100                         uri = (Uri) info.GetValue ("uri", typeof (Uri));
 101                         contentLength = info.GetInt64 ("contentLength");
 102                         contentType = info.GetString ("contentType");
 103                         method = info.GetString ("method");
 104                         statusDescription = info.GetString ("statusDescription");
 105                         cookieCollection = (CookieCollection) info.GetValue ("cookieCollection", typeof (CookieCollection));
 106                         version = (Version) info.GetValue ("version", typeof (Version));
 107                         statusCode = (HttpStatusCode) info.GetValue ("statusCode", typeof (HttpStatusCode));
 108                 }
 109
 110                 // Properties
 111
 112                 public string CharacterSet {
 113                         // Content-Type   = "Content-Type" ":" media-type
 114                         // media-type     = type "/" subtype *( ";" parameter )
 115                         // parameter      = attribute "=" value
 116                         // 3.7.1. default is ISO-8859-1
 117                         get {
 118                                 string contentType = ContentType;
 119                                 if (contentType == null)
 120                                         return "ISO-8859-1";
 121                                 string val = contentType.ToLower ();
 122                                 int pos = val.IndexOf ("charset=", StringComparison.Ordinal);
 123                                 if (pos == -1)
 124                                         return "ISO-8859-1";
 125                                 pos += 8;
 126                                 int pos2 = val.IndexOf (';', pos);
 127                                 return (pos2 == -1)
 128                                      ? contentType.Substring (pos)
 129                                      : contentType.Substring (pos, pos2 - pos);
 130                         }
 131                 }
 132
 133                 public string ContentEncoding {
 134                         get {
 135                                 CheckDisposed ();
 136                                 string h = webHeaders ["Content-Encoding"];
 137                                 return h != null ? h : "";
 138                         }
 139                 }
 140
 141                 public override long ContentLength {
 142                         get {
 143                                 return contentLength;
 144                         }
 145                 }
 146
 147                 public override string ContentType {
 148                         get {
 149                                 CheckDisposed ();
 150
 151                                 if (contentType == null)
 152                                         contentType = webHeaders ["Content-Type"];
 153
 154                                 return contentType;
 155                         }
 156                 }
 157
 158                 virtual
 159                 public CookieCollection Cookies {
 160                         get {
 161                                 CheckDisposed ();
 162                                 if (cookieCollection == null)
 163                                         cookieCollection = new CookieCollection ();
 164                                 return cookieCollection;
 165                         }
 166                         set {
 167                                 CheckDisposed ();
 168                                 cookieCollection = value;
 169                         }
 170                 }
 171
 172                 public override WebHeaderCollection Headers {
 173                         get {
 174                                 return webHeaders;
 175                         }
 176                 }
 177
 178                 static Exception GetMustImplement ()
 179                 {
 180                         return new NotImplementedException ();
 181                 }
 182
 183                 [MonoTODO]
 184                 public override bool IsMutuallyAuthenticated
 185                 {
 186                         get {
 187                                 throw GetMustImplement ();
 188                         }
 189                 }
 190
 191                 public DateTime LastModified {
 192                         get {
 193                                 CheckDisposed ();
 194                                 try {
 195                                         string dtStr = webHeaders ["Last-Modified"];
 196                                         return MonoHttpDate.Parse (dtStr);
 197                                 } catch (Exception) {
 198                                         return DateTime.Now;
 199                                 }
 200                         }
 201                 }
 202
 203                 virtual
 204                 public string Method {
 205                         get {
 206                                 CheckDisposed ();
 207                                 return method;
 208                         }
 209                 }
 210
 211                 public Version ProtocolVersion {
 212                         get {
 213                                 CheckDisposed ();
 214                                 return version;
 215                         }
 216                 }
 217
 218                 public override Uri ResponseUri {
 219                         get {
 220                                 CheckDisposed ();
 221                                 return uri;
 222                         }
 223                 }
 224
 225                 public string Server {
 226                         get {
 227                                 CheckDisposed ();
 228                                 return webHeaders ["Server"] ?? "";
 229                         }
 230                 }
 231
 232                 virtual
 233                 public HttpStatusCode StatusCode {
 234                         get {
 235                                 return statusCode;
 236                         }
 237                 }
 238
 239                 virtual
 240                 public string StatusDescription {
 241                         get {
 242                                 CheckDisposed ();
 243                                 return statusDescription;
 244                         }
 245                 }
 246
 247                 public override bool SupportsHeaders {
 248                         get {
 249                                 return true;
 250                         }
 251                 }
 252
 253                 // Methods
 254
 255                 public string GetResponseHeader (string headerName)
 256                 {
 257                         CheckDisposed ();
 258                         string value = webHeaders [headerName];
 259                         return (value != null) ? value : "";
 260                 }
 261
 262                 internal void ReadAll ()
 263                 {
 264                         WebConnectionStream wce = stream as WebConnectionStream;
 265                         if (wce == null)
 266                                 return;
 267
 268                         try {
 269                                 wce.ReadAll ();
 270                         } catch {}
 271                 }
 272
 273                 public override Stream GetResponseStream ()
 274                 {
 275                         CheckDisposed ();
 276                         if (stream == null)
 277                                 return Stream.Null;
 278                         if (string.Equals (method, "HEAD", StringComparison.OrdinalIgnoreCase))  // see par 4.3 & 9.4
 279                                 return Stream.Null;
 280
 281                         return stream;
 282                 }
 283
 284                 void ISerializable.GetObjectData (SerializationInfo serializationInfo,
 285                                                   StreamingContext streamingContext)
 286                 {
 287                         GetObjectData (serializationInfo, streamingContext);
 288                 }
 289
 290                 protected override void GetObjectData (SerializationInfo serializationInfo,
 291                         StreamingContext streamingContext)
 292                 {
 293                         SerializationInfo info = serializationInfo;
 294
 295                         info.AddValue ("uri", uri);
 296                         info.AddValue ("contentLength", contentLength);
 297                         info.AddValue ("contentType", contentType);
 298                         info.AddValue ("method", method);
 299                         info.AddValue ("statusDescription", statusDescription);
 300                         info.AddValue ("cookieCollection", cookieCollection);
 301                         info.AddValue ("version", version);
 302                         info.AddValue ("statusCode", statusCode);
 303                 }
 304
 305                 // Cleaning up stuff
 306
 307                 public override void Close ()
 308                 {
 309                         if (stream != null) {
 310                                 Stream st = stream;
 311                                 stream = null;
 312                                 if (st != null)
 313                                         st.Close ();
 314                         }
 315                 }
 316
 317                 void IDisposable.Dispose ()
 318                 {
 319                         Dispose (true);
 320                 }
 321
 322                 protected override void Dispose (bool disposing)
 323                 {
 324                         this.disposed = true;
 325                         base.Dispose (true);
 326                 }
 327
 328                 private void CheckDisposed ()
 329                 {
 330                         if (disposed)
 331                                 throw new ObjectDisposedException (GetType ().FullName);
 332                 }
 333
 334                 void FillCookies ()
 335                 {
 336                         if (webHeaders == null)
 337                                 return;
 338
 339                         //
 340                         // Don't terminate response reading on bad cookie value
 341                         //
 342                         string value;
 343                         CookieCollection cookies = null;
 344                         try {
 345                                 value = webHeaders.Get ("Set-Cookie");
 346                                 if (value != null)
 347                                         cookies = cookie_container.CookieCutter (uri, HttpKnownHeaderNames.SetCookie, value, false);
 348                         } catch {
 349                         }
 350
 351                         try {
 352                                 value = webHeaders.Get ("Set-Cookie2");
 353                                 if (value != null) {
 354                                         var cookies2 = cookie_container.CookieCutter (uri, HttpKnownHeaderNames.SetCookie2, value, false);
 355
 356                                         if (cookies != null && cookies.Count != 0) {
 357                                                 cookies.Add (cookies2);
 358                                         } else {
 359                                                 cookies = cookies2;
 360                                         }
 361                                 }
 362                         } catch {
 363                         }
 364
 365                         this.cookieCollection = cookies;
 366                 }
 367         }
 368 }
 369