mcs/class/System.Configuration/System.Configuration/SectionInfo.cs

   1 //
   2 // System.Configuration.SectionInfo.cs
   3 //
   4 // Authors:
   5 //      Lluis Sanchez (lluis@novell.com)
   6 //
   7 // Permission is hereby granted, free of charge, to any person obtaining
   8 // a copy of this software and associated documentation files (the
   9 // "Software"), to deal in the Software without restriction, including
  10 // without limitation the rights to use, copy, modify, merge, publish,
  11 // distribute, sublicense, and/or sell copies of the Software, and to
  12 // permit persons to whom the Software is furnished to do so, subject to
  13 // the following conditions:
  14 //
  15 // The above copyright notice and this permission notice shall be
  16 // included in all copies or substantial portions of the Software.
  17 //
  18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  21 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  22 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25 //
  26 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  27 //
  28 #if NET_2_0
  29 using System;
  30 using System.Collections;
  31 using System.Collections.Specialized;
  32 using System.Xml;
  33 using System.Text;
  34 using System.IO;
  35
  36 namespace System.Configuration
  37 {
  38         internal class SectionInfo: ConfigInfo
  39         {
  40                 bool allowLocation = true;
  41                 bool? requirePermission = true;
  42                 ConfigurationAllowDefinition allowDefinition = ConfigurationAllowDefinition.Everywhere;
  43                 ConfigurationAllowExeDefinition allowExeDefinition = ConfigurationAllowExeDefinition.MachineToApplication;
  44
  45                 public SectionInfo ()
  46                 {
  47                 }
  48
  49                 public SectionInfo (string sectionName, SectionInformation info)
  50                 {
  51                         Name = sectionName;
  52                         TypeName = info.Type;
  53                         this.allowLocation = info.AllowLocation;
  54                         this.allowDefinition = info.AllowDefinition;
  55                         this.allowExeDefinition = info.AllowExeDefinition;
  56                         this.requirePermission = info.RequirePermission;
  57                 }
  58
  59                 public override object CreateInstance ()
  60                 {
  61                         object ob = base.CreateInstance ();
  62                         ConfigurationSection sec = ob as ConfigurationSection;
  63                         if (sec != null) {
  64                                 sec.SectionInformation.AllowLocation = allowLocation;
  65                                 sec.SectionInformation.AllowDefinition = allowDefinition;
  66                                 sec.SectionInformation.AllowExeDefinition = allowExeDefinition;
  67                                 if (requirePermission != null)
  68                                         sec.SectionInformation.RequirePermission = requirePermission.Value;
  69                                 sec.SectionInformation.SetName (Name);
  70                         }
  71                         return ob;
  72                 }
  73
  74                 public override bool HasDataContent (Configuration config)
  75                 {
  76                         return config.GetSectionInstance (this, false) != null || config.GetSectionXml (this) != null;
  77                 }
  78
  79                 public override bool HasConfigContent (Configuration cfg)
  80                 {
  81                         return StreamName == cfg.FileName;
  82                 }
  83
  84                 public override void ReadConfig (Configuration cfg, string streamName, XmlTextReader reader)
  85                 {
  86                         StreamName = streamName;
  87                         ConfigHost = cfg.ConfigHost;
  88
  89                         while (reader.MoveToNextAttribute ()) {
  90                                 switch (reader.Name)
  91                                 {
  92                                         case "allowLocation":
  93                                                 string allowLoc = reader.Value;
  94                                                 allowLocation = (allowLoc == "true");
  95                                                 if (!allowLocation && allowLoc != "false")
  96                                                         ThrowException ("Invalid attribute value", reader);
  97                                                 break;
  98
  99                                         case "allowDefinition":
 100                                                 string allowDef = reader.Value;
 101                                                 try {
 102                                                         allowDefinition = (ConfigurationAllowDefinition) Enum.Parse (
 103                                                                            typeof (ConfigurationAllowDefinition), allowDef);
 104                                                 } catch {
 105                                                         ThrowException ("Invalid attribute value", reader);
 106                                                 }
 107                                                 break;
 108
 109                                         case "allowExeDefinition":
 110                                                 string allowExeDef = reader.Value;
 111                                                 try {
 112                                                         allowExeDefinition = (ConfigurationAllowExeDefinition) Enum.Parse (
 113                                                                            typeof (ConfigurationAllowExeDefinition), allowExeDef);
 114                                                 } catch {
 115                                                         ThrowException ("Invalid attribute value", reader);
 116                                                 }
 117                                                 break;
 118
 119                                         case "type":
 120                                                 TypeName = reader.Value;
 121                                                 break;
 122
 123                                         case "name":
 124                                                 Name = reader.Value;
 125                                                 if (Name == "location")
 126                                                         ThrowException ("location is a reserved section name", reader);
 127                                                 break;
 128
 129                                         case "requirePermission":
 130                                                 string reqPerm = reader.Value;
 131                                                 bool reqPermValue = (reqPerm == "true");
 132                                                 if (!reqPermValue && reqPerm != "false")
 133                                                         ThrowException ("Invalid attribute value", reader);
 134                                                 requirePermission = reqPermValue;
 135                                                 break;
 136
 137                                         default:
 138                                                 ThrowException (String.Format ("Unrecognized attribute: {0}", reader.Name), reader);
 139                                                 break;
 140                                 }
 141                         }
 142
 143                         if (Name == null || TypeName == null)
 144                                 ThrowException ("Required attribute missing", reader);
 145
 146                         reader.MoveToElement();
 147                         reader.Skip ();
 148                 }
 149
 150                 public override void WriteConfig (Configuration cfg, XmlWriter writer, ConfigurationSaveMode mode)
 151                 {
 152                         writer.WriteStartElement ("section");
 153                         writer.WriteAttributeString ("name", Name);
 154                         writer.WriteAttributeString ("type", TypeName);
 155                         if (!allowLocation)
 156                                 writer.WriteAttributeString ("allowLocation", "false");
 157                         if (allowDefinition != ConfigurationAllowDefinition.Everywhere)
 158                                 writer.WriteAttributeString ("allowDefinition", allowDefinition.ToString ());
 159                         if (allowExeDefinition != ConfigurationAllowExeDefinition.MachineToApplication)
 160                                 writer.WriteAttributeString ("allowExeDefinition", allowExeDefinition.ToString ());
 161                         if (requirePermission != null)
 162                                 writer.WriteAttributeString ("requirePermission", requirePermission.Value ? "true" : "false");
 163                         writer.WriteEndElement ();
 164                 }
 165
 166                 public override void ReadData (Configuration config, XmlTextReader reader, bool overrideAllowed)
 167                 {
 168                         if (!config.HasFile && !allowLocation)
 169                                 throw new ConfigurationErrorsException ("The configuration section <" + Name + "> cannot be defined inside a <location> element.", reader);
 170                         if (!config.ConfigHost.IsDefinitionAllowed (config.ConfigPath, allowDefinition, allowExeDefinition)) {
 171                                 object ctx = allowExeDefinition != ConfigurationAllowExeDefinition.MachineToApplication ? (object) allowExeDefinition : (object) allowDefinition;
 172                                 throw new ConfigurationErrorsException ("The section <" + Name + "> can't be defined in this configuration file (the allowed definition context is '" + ctx + "').", reader);
 173                         }
 174                         if (config.GetSectionXml (this) != null)
 175                                 ThrowException ("The section <" + Name + "> is defined more than once in the same configuration file.", reader);
 176                         config.SetSectionXml (this, reader.ReadOuterXml ());
 177                 }
 178
 179                 public override void WriteData (Configuration config, XmlWriter writer, ConfigurationSaveMode mode)
 180                 {
 181                         string xml;
 182
 183                         ConfigurationSection section = config.GetSectionInstance (this, false);
 184                         if (section != null) {
 185                                 ConfigurationSection parentSection = config.Parent != null ? config.Parent.GetSectionInstance (this, false) : null;
 186                                 xml = section.SerializeSection (parentSection, Name, mode);
 187
 188                                 if (section.SectionInformation.IsProtected) {
 189                                         StringBuilder sb = new StringBuilder ();
 190                                         sb.AppendFormat ("<{0} configProtectionProvider=\"{1}\">\n",
 191                                                          Name,
 192                                                          section.SectionInformation.ProtectionProvider.Name);
 193                                         sb.Append (config.ConfigHost.EncryptSection (xml,
 194                                                                                      section.SectionInformation.ProtectionProvider,
 195                                                                                      ProtectedConfiguration.Section));
 196                                         sb.AppendFormat ("</{0}>", Name);
 197                                         xml = sb.ToString ();
 198                                 }
 199                         }
 200                         else {
 201                                 xml = config.GetSectionXml (this);
 202                         }
 203
 204                         if (xml != null) {
 205                                 writer.WriteRaw (xml);
 206 /*                              XmlTextReader tr = new XmlTextReader (new StringReader (xml));
 207                                 writer.WriteNode (tr, true);
 208                                 tr.Close ();*/
 209                         }
 210                 }
 211         }
 212 }
 213
 214 #endif