class/System/System.Net.Configuration/NetAuthenticationModuleHandler.cs

   1 //
   2 // System.Net.Configuration.NetAuthenticationModuleHandler
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // (C) 2003 Ximian, Inc (http://www.ximian.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System.Collections;
  32 using System.Configuration;
  33 #if (XML_DEP)
  34 using System.Xml;
  35 #else
  36 using XmlNode = System.Object;
  37 #endif
  38
  39 namespace System.Net.Configuration
  40 {
  41         class NetAuthenticationModuleHandler : IConfigurationSectionHandler
  42         {
  43                 public virtual object Create (object parent, object configContext, XmlNode section)
  44                 {
  45 #if (XML_DEP)
  46                         if (section.Attributes != null && section.Attributes.Count != 0)
  47                                 HandlersUtil.ThrowException ("Unrecognized attribute", section);
  48
  49                         XmlNodeList httpHandlers = section.ChildNodes;
  50                         foreach (XmlNode child in httpHandlers) {
  51                                 XmlNodeType ntype = child.NodeType;
  52                                 if (ntype == XmlNodeType.Whitespace || ntype == XmlNodeType.Comment)
  53                                         continue;
  54
  55                                 if (ntype != XmlNodeType.Element)
  56                                         HandlersUtil.ThrowException ("Only elements allowed", child);
  57
  58                                 string name = child.Name;
  59                                 if (name == "clear") {
  60                                         if (child.Attributes != null && child.Attributes.Count != 0)
  61                                                 HandlersUtil.ThrowException ("Unrecognized attribute", child);
  62
  63                                         AuthenticationManager.Clear ();
  64                                         continue;
  65                                 }
  66
  67                                 string type = HandlersUtil.ExtractAttributeValue ("type", child);
  68                                 if (child.Attributes != null && child.Attributes.Count != 0)
  69                                         HandlersUtil.ThrowException ("Unrecognized attribute", child);
  70
  71                                 if (name == "add") {
  72                                         AuthenticationManager.Register (CreateInstance (type, child));
  73                                         continue;
  74                                 }
  75
  76                                 if (name == "remove") {
  77                                         AuthenticationManager.Unregister (CreateInstance (type, child));
  78                                         continue;
  79                                 }
  80
  81                                 HandlersUtil.ThrowException ("Unexpected element", child);
  82                         }
  83
  84                         return AuthenticationManager.RegisteredModules;
  85 #else
  86                         return null;
  87 #endif
  88                 }
  89
  90 #if (XML_DEP)
  91                 static IAuthenticationModule CreateInstance (string typeName, XmlNode node)
  92                 {
  93                         IAuthenticationModule module = null;
  94
  95                         try {
  96                                 Type type = Type.GetType (typeName, true);
  97                                 module = (IAuthenticationModule) Activator.CreateInstance (type);
  98                         } catch (Exception e) {
  99                                 HandlersUtil.ThrowException (e.Message, node);
 100                         }
 101
 102                         return module;
 103                 }
 104 #endif
 105         }
 106 }
 107