2004-08-08 Sebastien Pouliot <sebastien@ximian.com>

[mono.git] / mcs / class / corlib / System.Security.Policy / Evidence.cs

diff --git a/mcs/class/corlib/System.Security.Policy/Evidence.cs b/mcs/class/corlib/System.Security.Policy/Evidence.cs
index 87ab55bde93a6e2b441d2b363e694c55b6c0848f..278b6b4d207b2161900a22effe131d9aea1b1824 100644 (file)
--- a/mcs/class/corlib/System.Security.Policy/Evidence.cs
+++ b/mcs/class/corlib/System.Security.Policy/Evidence.cs
@@ -33,7 +33,9 @@
 
 using System;
 using System.Collections;
+using System.Reflection;
 using System.Security.Permissions;
+using System.Security.Cryptography.X509Certificates;
 
 namespace System.Security.Policy {
 
@@ -236,6 +238,60 @@ namespace System.Security.Policy {
                        }
                }
 #endif
+
+               // this avoid us to build all evidences from the runtime
+               // (i.e. multiple unmanaged->managed calls) and also allows
+               // to delay their creation until (if) needed
+               static internal Evidence GetDefaultHostEvidence (Assembly a) 
+               {
+                       Evidence e = new Evidence ();
+                       string aname = a.CodeBase;
+
+                       // by default all assembly have the Zone, Url and Hash evidences
+                       e.AddHost (Zone.CreateFromUrl (aname));
+                       e.AddHost (new Url (aname));
+                       e.AddHost (new Hash (a));
+
+                       // non local files (e.g. http://) also get a Site evidence
+                       if (!aname.ToUpper ().StartsWith ("FILE://")) {
+                               e.AddHost (Site.CreateFromUrl (aname));
+                       }
+
+                       // strongnamed assemblies gets a StrongName evidence
+                       AssemblyName an = a.GetName ();
+                       byte[] pk = an.GetPublicKey ();
+                       if (pk != null) {
+                               StrongNamePublicKeyBlob blob = new StrongNamePublicKeyBlob (pk);
+                               e.AddHost (new StrongName (blob, an.Name, an.Version));
+                       }
+
+                       // Authenticode(r) signed assemblies get a Publisher evidence
+                       try {
+                               X509Certificate x509 = X509Certificate.CreateFromSignedFile (a.Location);
+                               if (x509.GetHashCode () != 0) {
+                                       e.AddHost (new Publisher (x509));
+                               }
+                       }
+                       catch (ArgumentException) {
+                               // URI are not supported
+                       }
+#if NET_2_0
+                       // assemblies loaded from the GAC also get a Gac evidence (new in Fx 2.0)
+                       if (a.GlobalAssemblyCache) {
+                               e.AddHost (new Gac ());
+                       }
+/*
+                       // the current HostSecurityManager may add/remove some evidence
+                       AppDomainManager dommgr = AppDomain.CurrentDomain.DomainManager;
+                       if (dommgr != null) {
+                               if ((dommgr.HostSecurityManager.Flags & HostSecurityManagerFlags.HostAssemblyEvidence) ==
+                                       HostSecurityManagerFlags.HostAssemblyEvidence) {
+                                       e = dommgr.HostSecurityManager.ProvideAssemblyEvidence (a, e);
+                               }
+                       }*/
+#endif
+                       return e;
+               }
        
                private class EvidenceEnumerator : IEnumerator {