mcs/class/System/System.Net.Configuration/DefaultProxyHandler.cs

   1 //
   2 // System.Net.Configuration.DefaultProxyHandler
   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 #endif
  36
  37 namespace System.Net.Configuration
  38 {
  39         class DefaultProxyHandler : IConfigurationSectionHandler
  40         {
  41 #if (XML_DEP)
  42                 public virtual object Create (object parent, object configContext, XmlNode section)
  43                 {
  44                         IWebProxy result = parent as IWebProxy;
  45
  46                         if (section.Attributes != null && section.Attributes.Count != 0)
  47                                 HandlersUtil.ThrowException ("Unrecognized attribute", section);
  48
  49                         XmlNodeList nodes = section.ChildNodes;
  50                         foreach (XmlNode child in nodes) {
  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 == "proxy") {
  60                                         string deflt = HandlersUtil.ExtractAttributeValue ("usesystemdefault", child, true);
  61                                         string bypass = HandlersUtil.ExtractAttributeValue ("bypassonlocal", child, true);
  62                                         string address = HandlersUtil.ExtractAttributeValue ("proxyaddress", child, true);
  63                                         if (child.Attributes != null && child.Attributes.Count != 0) {
  64                                                 HandlersUtil.ThrowException ("Unrecognized attribute", child);
  65                                         }
  66
  67                                         result = new WebProxy ();
  68                                         bool bp = (bypass != null && String.Compare (bypass, "true", true) == 0);
  69                                         if (bp == false) {
  70                                                 if (bypass != null && String.Compare (bypass, "false", true) != 0)
  71                                                         HandlersUtil.ThrowException ("Invalid boolean value", child);
  72                                         }
  73
  74                                         if (!(result is WebProxy))
  75                                                 continue;
  76
  77                                         ((WebProxy) result).BypassProxyOnLocal = bp;
  78                                         if (address == null)
  79                                                 continue;
  80
  81                                         try {
  82                                                 ((WebProxy) result).Address = new Uri (address);
  83                                         } catch (Exception) {
  84                                                 HandlersUtil.ThrowException ("invalid uri", child);
  85                                         }
  86                                         continue;
  87                                 }
  88
  89                                 if (name == "bypasslist") {
  90                                         if (!(result is WebProxy))
  91                                                 continue;
  92
  93                                         FillByPassList (child, (WebProxy) result);
  94                                         continue;
  95                                 }
  96
  97                                 if (name == "module") {
  98                                         HandlersUtil.ThrowException ("WARNING: module not implemented yet", child);
  99                                 }
 100
 101                                 HandlersUtil.ThrowException ("Unexpected element", child);
 102                         }
 103
 104                         return result;
 105                 }
 106
 107                 static void FillByPassList (XmlNode node, WebProxy proxy)
 108                 {
 109                         ArrayList bypass = new ArrayList (proxy.BypassArrayList);
 110                         if (node.Attributes != null && node.Attributes.Count != 0)
 111                                 HandlersUtil.ThrowException ("Unrecognized attribute", node);
 112
 113                         XmlNodeList nodes = node.ChildNodes;
 114                         foreach (XmlNode child in nodes) {
 115                                 XmlNodeType ntype = child.NodeType;
 116                                 if (ntype == XmlNodeType.Whitespace || ntype == XmlNodeType.Comment)
 117                                         continue;
 118
 119                                 if (ntype != XmlNodeType.Element)
 120                                         HandlersUtil.ThrowException ("Only elements allowed", child);
 121
 122                                 string name = child.Name;
 123                                 if (name == "add") {
 124                                         string address = HandlersUtil.ExtractAttributeValue ("address", child);
 125                                         if (!bypass.Contains (address)) {
 126                                                 bypass.Add (address);
 127                                         }
 128                                         continue;
 129                                 }
 130
 131                                 if (name == "remove") {
 132                                         string address = HandlersUtil.ExtractAttributeValue ("address", child);
 133                                         bypass.Remove (address);
 134                                         continue;
 135                                 }
 136
 137                                 if (name == "clear") {
 138                                         if (node.Attributes != null && node.Attributes.Count != 0)
 139                                                 HandlersUtil.ThrowException ("Unrecognized attribute", node);
 140
 141                                         bypass.Clear ();
 142                                         continue;
 143                                 }
 144
 145                                 HandlersUtil.ThrowException ("Unexpected element", child);
 146                         }
 147
 148                         proxy.BypassList = (string []) bypass.ToArray (typeof (string));
 149                 }
 150 #endif
 151         }
 152 }
 153