mcs/class/System.Web/System.Web/HttpContext.cs

   1 //
   2 // System.Web.HttpContext
   3 //
   4 // Authors:
   5 //      Patrik Torstensson (Patrik.Torstensson@labs2.com)
   6 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //
   8 // (c) 2003, 2004 Novell, Inc. (http://www.novell.com)
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33 using System.Collections;
  34 using System.Configuration;
  35 using System.Security.Principal;
  36 using System.Web.Caching;
  37 using System.Web.Configuration;
  38 using System.Web.Util;
  39 using System.Web.SessionState;
  40 using System.Threading;
  41 using System.Runtime.Remoting.Messaging;
  42
  43 namespace System.Web
  44 {
  45         public sealed class HttpContext : IServiceProvider
  46         {
  47                 private ArrayList _arrExceptions;
  48
  49                 private HttpResponse    _oResponse;
  50                 private HttpRequest _oRequest;
  51                 private HttpServerUtility _Server;
  52                 private HttpApplication _oApplication;
  53                 private HttpSessionState _oSession;
  54                 private HttpWorkerRequest _oWorkerRequest;
  55                 private TraceContext _oTrace;
  56                 private IHttpHandler _Handler;
  57                 private IHttpAsyncHandler _AsyncHandler;
  58
  59                 private bool _skipauth;
  60                 private Hashtable               _oItems;
  61                 private DateTime                _oTimestamp;
  62                 int timeoutPossible;
  63                 long timeoutBegin;
  64                 object configTimeout;
  65                 string errorPage;
  66                 IPrincipal user;
  67
  68                 public HttpContext (HttpRequest Request, HttpResponse Response)
  69                 {
  70                         Context = this;
  71
  72                         _arrExceptions = null;
  73                         _oItems = null;
  74                         _oTimestamp = DateTime.Now;
  75                         _oRequest = Request;
  76                         _oResponse = Response;
  77                         _oTrace = new TraceContext (this);
  78                 }
  79
  80                 public HttpContext (HttpWorkerRequest WorkerRequest)
  81                 {
  82                         Context = this;
  83
  84                         _arrExceptions = null;
  85                         _oItems = null;
  86                         _oTimestamp = DateTime.Now;
  87                         _oRequest = new HttpRequest (WorkerRequest, this);
  88                         _oResponse = new HttpResponse (WorkerRequest, this);
  89                         _oWorkerRequest = WorkerRequest;
  90                         _oTrace = new TraceContext (this);
  91                 }
  92
  93                 internal HttpWorkerRequest WorkerRequest
  94                 {
  95                         get {
  96                                 return _oWorkerRequest;
  97                         }
  98                 }
  99
 100                 internal static HttpContext Context
 101                 {
 102                         get {
 103                                 return (HttpContext) CallContext.GetData ("Context");
 104                         }
 105
 106                         set {
 107                                 CallContext.SetData ("Context", value);
 108                         }
 109                 }
 110
 111                 public Exception [] AllErrors
 112                 {
 113                         get {
 114                                 if (_arrExceptions == null || _arrExceptions.Count == 0)
 115                                         return null;
 116
 117                                 return (Exception []) _arrExceptions.ToArray (typeof (Exception));
 118                         }
 119                 }
 120
 121                 public HttpApplicationState Application
 122                 {
 123                         get {
 124                                 return HttpApplicationFactory.ApplicationState;
 125                         }
 126                 }
 127
 128                 public HttpApplication ApplicationInstance
 129                 {
 130                         get {
 131                                 return _oApplication;
 132                         }
 133                         set {
 134                                 _oApplication = value;
 135                         }
 136                 }
 137
 138                 public Cache Cache
 139                 {
 140                         get {
 141                                 return HttpRuntime.Cache;
 142                         }
 143                 }
 144
 145                 public static HttpContext Current {
 146                         get { return Context; }
 147 #if NET_1_1
 148                         set { Context = value; }
 149 #endif
 150                 }
 151
 152                 public Exception Error
 153                 {
 154                         get {
 155                                 if (_arrExceptions == null || _arrExceptions.Count == 0)
 156                                         return null;
 157
 158                                 return (Exception) _arrExceptions [0];
 159                         }
 160                 }
 161
 162                 public IHttpHandler Handler
 163                 {
 164                         get {
 165                                 return _Handler;
 166                         }
 167
 168                         set {
 169                                 _Handler = value;
 170                         }
 171                 }
 172
 173                 internal IHttpAsyncHandler AsyncHandler
 174                 {
 175                         get {
 176                                 return _AsyncHandler;
 177                         }
 178
 179                         set {
 180                                 _AsyncHandler = value;
 181                         }
 182                 }
 183
 184                 public bool IsCustomErrorEnabled {
 185                         get {
 186                                 CustomErrorsConfig cfg;
 187                                 try {
 188                                         cfg = (CustomErrorsConfig) GetConfig ("system.web/customErrors");
 189                                 } catch (Exception) {
 190                                         return false;
 191                                 }
 192
 193                                 if (cfg == null)
 194                                         return false;
 195
 196                                 CustomErrorMode mode = cfg.Mode;
 197                                 if (mode == CustomErrorMode.On)
 198                                         return true;
 199
 200                                 return (mode == CustomErrorMode.RemoteOnly &&
 201                                         _oRequest.ServerVariables ["LOCAL_ADDR"] == _oRequest.UserHostAddress);
 202                         }
 203                 }
 204
 205                 public bool IsDebuggingEnabled
 206                 {
 207                         get {
 208                                 return CompilationConfiguration.GetInstance (this).Debug;
 209                         }
 210                 }
 211
 212                 public IDictionary Items
 213                 {
 214                         get {
 215                                 if (_oItems == null)
 216                                         _oItems = new Hashtable ();
 217
 218                                 return _oItems;
 219                         }
 220                 }
 221
 222                 public HttpRequest Request
 223                 {
 224                         get {
 225                                 return _oRequest;
 226                         }
 227                 }
 228
 229                 public HttpResponse Response
 230                 {
 231                         get {
 232                                 return _oResponse;
 233                         }
 234                 }
 235
 236                 public HttpServerUtility Server
 237                 {
 238                         get {
 239                                 if (null == _Server)
 240                                         _Server = new HttpServerUtility (this);
 241
 242                                 return _Server;
 243                         }
 244                 }
 245
 246                 public HttpSessionState Session
 247                 {
 248                         get {
 249                                 return (HttpSessionState) _oSession;
 250                         }
 251                 }
 252
 253                 public bool SkipAuthorization
 254                 {
 255                         get {
 256                                 return _skipauth;
 257                         }
 258
 259                         set {
 260                                 _skipauth = value;
 261                         }
 262                 }
 263
 264                 public DateTime Timestamp
 265                 {
 266                         get {
 267                                 return _oTimestamp;
 268                         }
 269                 }
 270
 271                 public TraceContext Trace
 272                 {
 273                         get {
 274                                 return _oTrace;
 275                         }
 276                 }
 277
 278                 public IPrincipal User {
 279                         get { return user; }
 280                         set { user = value; }
 281                 }
 282
 283                 internal bool TimeoutPossible {
 284                         get { return (Interlocked.CompareExchange (ref timeoutPossible, 1, 1) == 1); }
 285                 }
 286
 287                 internal void BeginTimeoutPossible ()
 288                 {
 289                         timeoutPossible = 1;
 290                         timeoutBegin = DateTime.UtcNow.Ticks;
 291                 }
 292
 293                 internal void EndTimeoutPossible ()
 294                 {
 295                         Interlocked.CompareExchange (ref timeoutPossible, 0, 1);
 296                 }
 297
 298                 internal void TryWaitForTimeout ()
 299                 {
 300                         while (Interlocked.CompareExchange (ref timeoutPossible, 1, 1) == 1) {
 301                                 Thread.Sleep (500);
 302                         }
 303                 }
 304
 305                 internal bool CheckIfTimeout (DateTime dt)
 306                 {
 307                         TimeSpan ts = new TimeSpan (dt.Ticks - timeoutBegin);
 308                         return (ts > ConfigTimeout);
 309                 }
 310
 311                 internal TimeSpan ConfigTimeout {
 312                         get {
 313                                 if (configTimeout == null) {
 314                                         HttpRuntimeConfig config = (HttpRuntimeConfig)
 315                                                                 GetConfig ("system.web/httpRuntime");
 316                                         configTimeout = new TimeSpan (0, 0, config.ExecutionTimeout);
 317                                 }
 318
 319                                 return (TimeSpan) configTimeout;
 320                         }
 321                         set {
 322                                 configTimeout = value;
 323                         }
 324                 }
 325
 326                 internal string ErrorPage {
 327                         get { return errorPage; }
 328                         set { errorPage = value; }
 329                 }
 330
 331                 internal void SetSession (HttpSessionState session)
 332                 {
 333                         _oSession = session;
 334                 }
 335
 336                 public void AddError (Exception errorInfo)
 337                 {
 338                         if (_arrExceptions == null)
 339                                 _arrExceptions = new ArrayList ();
 340
 341                         _arrExceptions.Add (errorInfo);
 342                 }
 343
 344                 public void ClearError ()
 345                 {
 346                         _arrExceptions = null;
 347                 }
 348
 349                 public object GetConfig (string name)
 350                 {
 351                         return WebConfigurationSettings.GetConfig (name, this);
 352                 }
 353
 354                 public static object GetAppConfig (string name)
 355                 {
 356                         return WebConfigurationSettings.GetConfig (name);
 357                 }
 358
 359                 object IServiceProvider.GetService (Type service)
 360                 {
 361                         if (service == typeof (HttpWorkerRequest))
 362                                 return _oWorkerRequest;
 363
 364                         if (service == typeof (HttpRequest))
 365                                 return Request;
 366
 367                         if (service == typeof (HttpResponse))
 368                                 return Response;
 369
 370                         if (service == typeof (HttpApplication))
 371                                 return ApplicationInstance;
 372
 373                         if (service == typeof (HttpApplicationState))
 374                                 return Application;
 375
 376                         if (service == typeof (HttpSessionState))
 377                                 return Session;
 378
 379                         if (service == typeof (HttpServerUtility))
 380                                 return Server;
 381
 382                         return null;
 383                 }
 384
 385                 public void RewritePath (string path)
 386                 {
 387                         //LAMESPEC: they say that they throw a ArgumentNullException, however,
 388                         // i get a NullReferenceException...
 389                         if (path == null)
 390                                 throw new ArgumentNullException ("path");
 391
 392                         string query;
 393                         int qmark = path.IndexOf ('?');
 394                         if (qmark == -1 || qmark + 1 >= path.Length) {
 395                                 query = null;
 396                         } else {
 397                                 query = path.Substring (qmark + 1);
 398                                 path = path.Substring (0, qmark);
 399                         }
 400
 401                         path = UrlUtils.Combine (Request.BaseVirtualDir, path);
 402                         if (!path.StartsWith (HttpRuntime.AppDomainAppVirtualPath))
 403                                 throw new HttpException (404, "The virtual path '" + path +
 404                                                          "' maps to another application.");
 405
 406                         Request.SetCurrentExePath (path);
 407                         Request.QueryStringRaw = query;
 408                 }
 409
 410 #if NET_1_1
 411                 public void RewritePath (string filePath, string pathInfo, string queryString)
 412                 {
 413                         RewritePath (filePath + "?" + queryString);
 414                         Request.SetPathInfo (pathInfo);
 415                 }
 416 #endif
 417         }
 418 }
 419