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

   1 //
   2 // SiteMembershipCondition.cs: Site MembershipCondition
   3 //
   4 // Author:
   5 //      Sebastien Pouliot (spouliot@motus.com)
   6 //
   7 // (C) 2004 Motus Technologies Inc. (http://www.motus.com)
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Collections;
  35 using System.Globalization;
  36 using System.Security;
  37
  38 namespace System.Security.Policy {
  39
  40         [Serializable]
  41         public sealed class SiteMembershipCondition : IMembershipCondition, IConstantMembershipCondition {
  42
  43                 private string _site;
  44
  45                 // constructors
  46
  47                 public SiteMembershipCondition (string site)
  48                 {
  49                         Site = site;
  50                 }
  51
  52                 // properties
  53
  54                 public string Site {
  55                         get { return _site; }
  56                         set {
  57                                 if (value == null)
  58                                         throw new ArgumentNullException ("site");
  59                                 if (!System.Security.Policy.Site.IsValid (value))
  60                                         throw new ArgumentException ("invalid site");
  61                                 _site = value;
  62                         }
  63                 }
  64
  65                 // methods
  66
  67                 public bool Check (Evidence evidence)
  68                 {
  69                         if (evidence == null)
  70                                 return false;
  71
  72                         IEnumerator e = evidence.GetHostEnumerator ();
  73                         while (e.MoveNext ()) {
  74                                 if (e.Current is Site) {
  75                                         string[] s1 = _site.Split ('.');
  76                                         string[] s2 = (e.Current as Site).origin_site.Split ('.');
  77                                         for (int i = s1.Length - 1, j = s2.Length - 1; i>=0; i--, j--) {
  78                                                 if (i == 0) {
  79                                                         // special * case
  80                                                         return (String.Compare (s1 [0], "*", true, CultureInfo.InvariantCulture) == 0);
  81                                                 }
  82                                                 if (String.Compare (s1 [i], s2 [j], true, CultureInfo.InvariantCulture) != 0)
  83                                                         return false;
  84                                         }
  85                                         return true;
  86                                 }
  87                         }
  88                         return false;
  89                 }
  90
  91                 public IMembershipCondition Copy ()
  92                 {
  93                         return new SiteMembershipCondition (_site);
  94                 }
  95
  96                 public override bool Equals (object o)
  97                 {
  98                         if (o == null)
  99                                 return false;
 100                         if (o is SiteMembershipCondition) {
 101                                 Site s = new Site ((o as SiteMembershipCondition)._site);
 102                                 return s.Equals (new Site (_site));
 103                         }
 104                         return false;
 105                 }
 106
 107                 public void FromXml (SecurityElement e)
 108                 {
 109                         FromXml (e, null);
 110                 }
 111
 112                 public void FromXml (SecurityElement e, PolicyLevel level)
 113                 {
 114                         if (e == null)
 115                                 throw new ArgumentNullException ("e");
 116                         if (e.Tag != "IMembershipCondition")
 117                                 throw new ArgumentException (Locale.GetText ("Invalid XML - not a IMembershipCondition tag."));
 118                         if (e.Attribute ("class") != GetType ().AssemblyQualifiedName)
 119                                 throw new ArgumentException (Locale.GetText ("Invalid class."));
 120                         if (e.Attribute ("version") != "1")
 121                                 throw new ArgumentException (Locale.GetText ("Invalid version."));
 122
 123                         _site = e.Attribute ("Site");
 124                 }
 125
 126                 public override int GetHashCode ()
 127                 {
 128                         return _site.GetHashCode ();
 129                 }
 130
 131                 public override string ToString ()
 132                 {
 133                         return "Site - " + _site;
 134                 }
 135
 136                 public SecurityElement ToXml ()
 137                 {
 138                         return ToXml (null);
 139                 }
 140
 141                 public SecurityElement ToXml (PolicyLevel level)
 142                 {
 143                         SecurityElement element = new SecurityElement ("IMembershipCondition");
 144                         element.AddAttribute ("class", this.GetType ().AssemblyQualifiedName);
 145                         element.AddAttribute ("version", "1");
 146                         element.AddAttribute ("Site", _site);
 147                         return element;
 148                 }
 149         }
 150 }