mcs/class/corlib/System.Security/HostSecurityManager.cs

   1 //
   2 // System.Security.HostSecurityManager class
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 #if NET_2_0
  30
  31 using System.Reflection;
  32 using System.Runtime.Hosting;
  33 using System.Runtime.InteropServices;
  34 using System.Security.Policy;
  35
  36 namespace System.Security {
  37
  38         [Serializable]
  39         [ComVisible (true)]
  40         public class HostSecurityManager {
  41
  42                 public HostSecurityManager ()
  43                 {
  44                 }
  45
  46                 public virtual PolicyLevel DomainPolicy {
  47                         // always return null - may be overriden
  48                         get { return null; }
  49                 }
  50
  51                 public virtual HostSecurityManagerOptions Flags {
  52                         get { return HostSecurityManagerOptions.AllFlags; }
  53                 }
  54
  55                 public virtual ApplicationTrust DetermineApplicationTrust (Evidence applicationEvidence, Evidence activatorEvidence, TrustManagerContext context)
  56                 {
  57                         if (applicationEvidence == null)
  58                                 throw new ArgumentNullException ("applicationEvidence");
  59
  60                         ActivationArguments aa = null;
  61                         foreach (object o in applicationEvidence) {
  62                                 aa = (o as ActivationArguments);
  63                                 if (aa != null)
  64                                         break;
  65                         }
  66
  67                         if (aa == null) {
  68                                 string msg = Locale.GetText ("No {0} found in {1}.");
  69                                 throw new ArgumentException (string.Format (msg, "ActivationArguments", "Evidence"), "applicationEvidence");
  70                         }
  71                         if (aa.ActivationContext == null) {
  72                                 string msg = Locale.GetText ("No {0} found in {1}.");
  73                                 throw new ArgumentException (string.Format (msg, "ActivationContext", "ActivationArguments"), "applicationEvidence");
  74                         }
  75
  76                         // FIXME: this part is still untested
  77                         if (ApplicationSecurityManager.DetermineApplicationTrust (aa.ActivationContext, context)) {
  78                                 if (aa.ApplicationIdentity == null)
  79                                         return new ApplicationTrust ();
  80                                 else
  81                                         return new ApplicationTrust (aa.ApplicationIdentity);
  82                         }
  83                         return null;
  84                 }
  85
  86                 public virtual Evidence ProvideAppDomainEvidence (Evidence inputEvidence)
  87                 {
  88                         // no changes - may be overriden
  89                         return inputEvidence;
  90                 }
  91
  92                 public virtual Evidence ProvideAssemblyEvidence (Assembly loadedAssembly, Evidence inputEvidence)
  93                 {
  94                         // no changes - may be overriden
  95                         return inputEvidence;
  96                 }
  97
  98                 public virtual PermissionSet ResolvePolicy (Evidence evidence)
  99                 {
 100                         if (evidence == null)
 101                                 throw new NullReferenceException ("evidence");
 102                         return SecurityManager.ResolvePolicy (evidence);
 103                 }
 104         }
 105 }
 106
 107 #endif