mcs/class/corlib/System.Security.Policy/UrlMembershipCondition.cs

   1 //
   2 // System.Security.Policy.UrlMembershipCondition.cs
   3 //
   4 // Authors:
   5 //      Duncan Mak (duncan@ximian.com)
   6 //      Sebastien Pouliot (spouliot@motus.com)
   7 //
   8 // (C) 2003, Ximian Inc.
   9 // (C) 2004 Motus Technologies Inc. (http://www.motus.com)
  10 //
  11
  12 //
  13 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  14 //
  15 // Permission is hereby granted, free of charge, to any person obtaining
  16 // a copy of this software and associated documentation files (the
  17 // "Software"), to deal in the Software without restriction, including
  18 // without limitation the rights to use, copy, modify, merge, publish,
  19 // distribute, sublicense, and/or sell copies of the Software, and to
  20 // permit persons to whom the Software is furnished to do so, subject to
  21 // the following conditions:
  22 //
  23 // The above copyright notice and this permission notice shall be
  24 // included in all copies or substantial portions of the Software.
  25 //
  26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33 //
  34
  35 using System;
  36 using System.Globalization;
  37
  38 namespace System.Security.Policy {
  39
  40         [Serializable]
  41         public sealed class UrlMembershipCondition
  42                 : IMembershipCondition, ISecurityEncodable, ISecurityPolicyEncodable, IConstantMembershipCondition
  43         {
  44                 string url;
  45
  46                 public UrlMembershipCondition (string url)
  47                 {
  48                         this.url = System.Security.Policy.Url.Prepare (url);
  49                 }
  50
  51                 public string Url {
  52                         get { return url; }
  53                         set { url = System.Security.Policy.Url.Prepare (value); }
  54                 }
  55
  56                 public bool Check (Evidence evidence)
  57                 {
  58                         if (evidence == null)
  59                                 return false;
  60
  61                         foreach (object o in evidence) {
  62                                 Url u = (o as Url);
  63                                 if (u != null) {
  64                                         // note: there shouldn't be more than one Url evidence
  65                                         if (System.Security.Policy.Url.Compare (url, u.Value))
  66                                                 return true;
  67                                 }
  68                         }
  69                         return false;
  70                 }
  71
  72                 public IMembershipCondition Copy ()
  73                 {
  74                         return new UrlMembershipCondition (url);
  75                 }
  76
  77                 public override bool Equals (Object o)
  78                 {
  79                         if (o is UrlMembershipCondition) {
  80                                 return System.Security.Policy.Url.Compare (url, ((UrlMembershipCondition) o).Url);
  81                         }
  82                         return false;
  83                 }
  84
  85                 public void FromXml (SecurityElement element)
  86                 {
  87                         FromXml (element, null);
  88                 }
  89
  90                 public void FromXml (SecurityElement element, PolicyLevel level)
  91                 {
  92                         if (element == null)
  93                                 throw new ArgumentNullException ("element");
  94
  95                         if (element.Tag != "IMembershipCondition")
  96                                 throw new ArgumentException (
  97                                         Locale.GetText ("Invalid tag - expected IMembershipCondition"));
  98
  99                         if (element.Attribute ("class") != GetType ().AssemblyQualifiedName)
 100                                 throw new ArgumentException (
 101                                         Locale.GetText ("Invalid class attribute"));
 102
 103                         if (element.Attribute ("version") != "1")
 104                                 throw new ArgumentException (
 105                                         Locale.GetText ("Invalid version"));
 106
 107                         url = element.Attribute ("Url");
 108                 }
 109
 110                 public override int GetHashCode ()
 111                 {
 112                         return url.GetHashCode ();
 113                 }
 114
 115                 public override string ToString ()
 116                 {
 117                         return "Url - " + url;
 118                 }
 119
 120                 public SecurityElement ToXml ()
 121                 {
 122                         return ToXml (null);
 123                 }
 124
 125                 public SecurityElement ToXml (PolicyLevel level)
 126                 {
 127                         SecurityElement element = new SecurityElement ("IMembershipCondition");
 128                         element.AddAttribute ("class", this.GetType ().AssemblyQualifiedName);
 129                         element.AddAttribute ("version", "1");
 130                         element.AddAttribute ("Url", url);
 131                         return element;
 132                 }
 133         }
 134 }