mcs/class/System.ServiceModel/System.ServiceModel.Channels/SvcHttpHandlerFactory.cs

   1 //
   2 // SvcHttpHandlerFactory.cs
   3 //
   4 // Author:
   5 //      Ankit Jain  <jankit@novell.com>
   6 //
   7 // Copyright (C) 2006 Novell, Inc.  http://www.novell.com
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using System.Collections;
  31 using System.Collections.Generic;
  32 using System.Collections.Specialized;
  33 using System.IO;
  34 using System.Reflection;
  35 using System.ServiceModel;
  36 using System.Web;
  37 using System.Web.Caching;
  38
  39 namespace System.ServiceModel.Channels {
  40
  41         internal class SvcHttpHandlerFactory : IHttpHandlerFactory
  42         {
  43                 static Dictionary<string, SvcHttpHandler> handlers = new Dictionary<string, SvcHttpHandler> ();
  44                 string privateBinPath;
  45                 Type service_type, factory_type;
  46
  47                 public SvcHttpHandlerFactory ()
  48                 {
  49                         ServiceHostingEnvironment.InAspNet = true;
  50                 }
  51
  52                 public IHttpHandler GetHandler (HttpContext context, string requestType, string url, string pathTranslated)
  53                 {
  54                         if (handlers.ContainsKey (url))
  55                                 return handlers [url];
  56
  57                         LoadTypeFromSvc (pathTranslated, url, context);
  58                         if (service_type == null)
  59                                 throw new Exception (String.Format (
  60                                         "Could not find service for url : '{0}'", url));
  61
  62                         SvcHttpHandler handler = new SvcHttpHandler (service_type, factory_type, url);
  63                         handlers [url] = handler;
  64
  65                         return handler;
  66                 }
  67
  68                 [MonoTODO]
  69                 public void ReleaseHandler (IHttpHandler handler)
  70                 {
  71                         return;
  72                 }
  73
  74                 internal static SvcHttpHandler GetHandler (string path)
  75                 {
  76                         return handlers [path];
  77                 }
  78
  79                 void LoadTypeFromSvc (string path, string url, HttpContext context)
  80                 {
  81                         if (CachingCompiler.GetTypeFromCache (path) != null)
  82                                 return;
  83
  84                         ServiceHostParser parser = new ServiceHostParser (path, url, context);
  85
  86                         parser.Parse ();
  87                         if (parser.Program == null) {
  88                                 //FIXME: Not caching, as parser.TypeName could be
  89                                 //just typename or fully qualified name
  90                                 service_type = GetTypeFromBin (parser.TypeName);
  91                                 /*CachingCompiler.InsertType (
  92                                         service_type, service_type.Assembly.Location, url,
  93                                         new CacheItemRemovedCallback (RemovedCallback));*/
  94                         } else {
  95                                 service_type = CachingCompiler.CompileAndGetType (
  96                                         parser, url,
  97                                         new CacheItemRemovedCallback (RemovedCallback));
  98                         }
  99
 100                         if (parser.Factory != null) {
 101                                 factory_type = GetTypeFromBin (parser.Factory);
 102                                 /*CachingCompiler.InsertType (
 103                                         factory_type, factory_type.Assembly.Location, url,
 104                                         new CacheItemRemovedCallback (RemovedCallback));*/
 105                         }
 106                 }
 107
 108                 string PrivateBinPath {
 109                         get {
 110                                 if (privateBinPath != null)
 111                                         return privateBinPath;
 112
 113                                 AppDomainSetup setup = AppDomain.CurrentDomain.SetupInformation;
 114                                 privateBinPath = setup.PrivateBinPath;
 115
 116                                 if (!Path.IsPathRooted (privateBinPath)) {
 117                                         string appbase = setup.ApplicationBase;
 118                                         if (appbase.StartsWith ("file://")) {
 119                                                 appbase = appbase.Substring (7);
 120                                                 if (Path.DirectorySeparatorChar != '/')
 121                                                         appbase = appbase.Replace ('/', Path.DirectorySeparatorChar);
 122                                         }
 123                                         privateBinPath = Path.Combine (appbase, privateBinPath);
 124                                 }
 125
 126                                 return privateBinPath;
 127                         }
 128                 }
 129
 130                 //FIXME: Service="TypeName,TypeNamespace" not handled
 131                 Type GetTypeFromBin (string typeName)
 132                 {
 133                         if (!Directory.Exists (PrivateBinPath))
 134                                 throw new HttpException (String.Format ("Type {0} not found.", typeName));
 135
 136                         string [] binDlls = Directory.GetFiles (PrivateBinPath, "*.dll");
 137                         Type result = null;
 138                         foreach (string dll in binDlls) {
 139                                 Assembly assembly = Assembly.LoadFrom (dll);
 140                                 Type type = assembly.GetType (typeName, false);
 141                                 if (type != null) {
 142                                         if (result != null)
 143                                                 throw new HttpException (String.Format ("Type {0} is not unique.", typeName));
 144
 145                                         result = type;
 146                                 }
 147                         }
 148
 149                         if (result == null)
 150                                 throw new HttpException (String.Format ("Type {0} not found.", typeName));
 151
 152                         return result;
 153                 }
 154
 155                 public static void RemovedCallback (string key, object value, CacheItemRemovedReason reason)
 156                 {
 157                         if (key.StartsWith (CachingCompiler.cacheTypePrefix)) {
 158                                 string path = key.Remove (0, CachingCompiler.cacheTypePrefix.Length);
 159
 160                                 SvcHttpHandler handler;
 161                                 if (!handlers.TryGetValue (path, out handler))
 162                                         return;
 163                                 handler.Close ();
 164
 165                                 handlers.Remove (path);
 166                         }
 167                 }
 168         }
 169 }