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

   1 //
   2 // System.Security.Policy.ApplicationDirectoryMembershipCondition\r
   3 //\r
   4 // Authors:\r
   5 //      Nick Drochak (ndrochak@gol.com)\r
   6 //      Jackson Harper (Jackson@LatitudeGeo.com)\r
   7 //      Sebastien Pouliot  <sebastien@ximian.com>
   8 //\r
   9 // (C) 2002 Nick Drochak, All rights reserved.\r
  10 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.Collections;
  33 using System.Globalization;
  34 using System.IO;
  35 using System.Reflection;
  36
  37 using Mono.Security;
  38 \r
  39 namespace System.Security.Policy {\r
  40 \r
  41         [Serializable]\r
  42         public sealed class ApplicationDirectoryMembershipCondition : IConstantMembershipCondition, IMembershipCondition {\r
  43
  44                 private readonly int version = 1;
  45
  46                 public ApplicationDirectoryMembershipCondition ()
  47                 {
  48                 }
  49
  50                 // Methods\r
  51                 public bool Check (Evidence evidence)\r
  52                 {\r
  53                         if (evidence == null)\r
  54                                 return false;\r
  55
  56                         string codebase = Assembly.GetCallingAssembly ().CodeBase;
  57                         Uri local = new Uri (codebase);
  58                         Url ucode = new Url (codebase);
  59
  60                         // *both* ApplicationDirectory and Url must be in *Host* evidences
  61                         bool adir = false;
  62                         bool url = false;
  63                         IEnumerator e = evidence.GetHostEnumerator ();
  64                         while (e.MoveNext ()) {
  65                                 object o = e.Current;
  66 \r
  67                                 if (!adir && (o is ApplicationDirectory)) {\r
  68                                         ApplicationDirectory ad = (o as ApplicationDirectory);
  69                                         string s = ad.Directory;
  70                                         adir = (String.Compare (s, 0, local.ToString (), 0, s.Length, true, CultureInfo.InvariantCulture) == 0);
  71                                 }
  72                                 else if (!url && (o is Url)) {
  73                                         url = ucode.Equals (o);
  74                                 }
  75
  76                                 // got both ?
  77                                 if (adir && url)
  78                                         return true;\r
  79                         }\r
  80                         return false;\r
  81                 }\r
  82 \r
  83                 public IMembershipCondition Copy () \r
  84                 { \r
  85                         return new ApplicationDirectoryMembershipCondition ();\r
  86                 }\r
  87                 \r
  88                 public override bool Equals (object o) \r
  89                 { \r
  90                         return (o is ApplicationDirectoryMembershipCondition); \r
  91                 }\r
  92                 \r
  93                 public void FromXml (SecurityElement e)\r
  94                 {\r
  95                         FromXml (e, null);\r
  96                 }\r
  97                 \r
  98                 public void FromXml (SecurityElement e, PolicyLevel level)\r
  99                 {\r
 100                         MembershipConditionHelper.CheckSecurityElement (e, "e", version, version);
 101                 }\r
 102                 \r
 103                 // All instances of ApplicationDirectoryMembershipCondition are equal so they should\r
 104                 // have the same hashcode\r
 105                 public override int GetHashCode () \r
 106                 { \r
 107                         return typeof (ApplicationDirectoryMembershipCondition).GetHashCode ();\r
 108                 }\r
 109                 \r
 110                 public override string ToString () \r
 111                 { \r
 112                         return "ApplicationDirectory";\r
 113                 }\r
 114                 \r
 115                 public SecurityElement ToXml () \r
 116                 { \r
 117                         return ToXml (null);\r
 118                 }\r
 119                 \r
 120                 public SecurityElement ToXml (PolicyLevel level) \r
 121                 {\r
 122                         SecurityElement se = MembershipConditionHelper.Element (typeof (ApplicationDirectoryMembershipCondition), version);
 123                         // nothing to add
 124                         return se;
 125                 }
 126         }\r
 127 }\r