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 using System;
  13 using System.Globalization;
  14
  15 namespace System.Security.Policy {
  16
  17         [Serializable]
  18         public sealed class UrlMembershipCondition
  19                 : IMembershipCondition, ISecurityEncodable, ISecurityPolicyEncodable, IConstantMembershipCondition
  20         {
  21                 string url;
  22
  23                 public UrlMembershipCondition (string url)
  24                 {
  25                         this.url = System.Security.Policy.Url.Prepare (url);
  26                 }
  27
  28                 public string Url {
  29                         get { return url; }
  30                         set { url = System.Security.Policy.Url.Prepare (value); }
  31                 }
  32
  33                 public bool Check (Evidence evidence)
  34                 {
  35                         if (evidence == null)
  36                                 return false;
  37
  38                         foreach (object o in evidence) {
  39                                 Url u = (o as Url);
  40                                 if (u != null) {
  41                                         // note: there shouldn't be more than one Url evidence
  42                                         if (System.Security.Policy.Url.Compare (url, u.Value))
  43                                                 return true;
  44                                 }
  45                         }
  46                         return false;
  47                 }
  48
  49                 public IMembershipCondition Copy ()
  50                 {
  51                         return new UrlMembershipCondition (url);
  52                 }
  53
  54                 public override bool Equals (Object o)
  55                 {
  56                         if (o is UrlMembershipCondition) {
  57                                 return System.Security.Policy.Url.Compare (url, ((UrlMembershipCondition) o).Url);
  58                         }
  59                         return false;
  60                 }
  61
  62                 public void FromXml (SecurityElement element)
  63                 {
  64                         FromXml (element, null);
  65                 }
  66
  67                 public void FromXml (SecurityElement element, PolicyLevel level)
  68                 {
  69                         if (element == null)
  70                                 throw new ArgumentNullException ("element");
  71
  72                         if (element.Tag != "IMembershipCondition")
  73                                 throw new ArgumentException (
  74                                         Locale.GetText ("Invalid tag - expected IMembershipCondition"));
  75
  76                         if (element.Attribute ("class") != GetType ().AssemblyQualifiedName)
  77                                 throw new ArgumentException (
  78                                         Locale.GetText ("Invalid class attribute"));
  79
  80                         if (element.Attribute ("version") != "1")
  81                                 throw new ArgumentException (
  82                                         Locale.GetText ("Invalid version"));
  83
  84                         url = element.Attribute ("Url");
  85                 }
  86
  87                 public override int GetHashCode ()
  88                 {
  89                         return url.GetHashCode ();
  90                 }
  91
  92                 public override string ToString ()
  93                 {
  94                         return "Url - " + url;
  95                 }
  96
  97                 public SecurityElement ToXml ()
  98                 {
  99                         return ToXml (null);
 100                 }
 101
 102                 public SecurityElement ToXml (PolicyLevel level)
 103                 {
 104                         SecurityElement element = new SecurityElement ("IMembershipCondition");
 105                         element.AddAttribute ("class", this.GetType ().AssemblyQualifiedName);
 106                         element.AddAttribute ("version", "1");
 107                         element.AddAttribute ("Url", url);
 108                         return element;
 109                 }
 110         }
 111 }