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-rw-r--r--src/mscorlib/src/System/Security/CodeAccessPermission.cs229
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diff --git a/src/mscorlib/src/System/Security/CodeAccessPermission.cs b/src/mscorlib/src/System/Security/CodeAccessPermission.cs
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--- a/src/mscorlib/src/System/Security/CodeAccessPermission.cs
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-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-// See the LICENSE file in the project root for more information.
-
-namespace System.Security
-{
- using System.IO;
- using System.Threading;
- using System.Security;
- using System.Security.Util;
- using System.Security.Permissions;
- using System.Runtime.CompilerServices;
- using System.Collections;
- using System.Text;
- using System;
- using System.Diagnostics;
- using System.Diagnostics.Contracts;
- using IUnrestrictedPermission = System.Security.Permissions.IUnrestrictedPermission;
-
- [Serializable]
- [System.Runtime.InteropServices.ComVisible(true)]
- abstract public class CodeAccessPermission
- : IPermission, ISecurityEncodable, IStackWalk
- {
- // Static methods for manipulation of stack
- [MethodImplAttribute(MethodImplOptions.NoInlining)] // Methods containing StackCrawlMark local var has to be marked non-inlineable
- public static void RevertAssert()
- {
- StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
- SecurityRuntime.RevertAssert(ref stackMark);
- }
-
- [MethodImplAttribute(MethodImplOptions.NoInlining)] // Methods containing StackCrawlMark local var has to be marked non-inlineable
- [Obsolete("Deny is obsolete and will be removed in a future release of the .NET Framework. See http://go.microsoft.com/fwlink/?LinkID=155570 for more information.")]
- public static void RevertDeny()
- {
- StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
- SecurityRuntime.RevertDeny(ref stackMark);
- }
-
- [MethodImplAttribute(MethodImplOptions.NoInlining)] // Methods containing StackCrawlMark local var has to be marked non-inlineable
- public static void RevertPermitOnly()
- {
- StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
- SecurityRuntime.RevertPermitOnly(ref stackMark);
- }
-
- [MethodImplAttribute(MethodImplOptions.NoInlining)] // Methods containing StackCrawlMark local var has to be marked non-inlineable
- public static void RevertAll()
- {
- StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
- SecurityRuntime.RevertAll(ref stackMark);
- }
-
- //
- // Standard implementation of IPermission methods for
- // code-access permissions.
- //
-
- // Mark this method as requiring a security object on the caller's frame
- // so the caller won't be inlined (which would mess up stack crawling).
- [DynamicSecurityMethodAttribute()]
- [MethodImplAttribute(MethodImplOptions.NoInlining)] // Methods containing StackCrawlMark local var has to be marked non-inlineable
- public void Demand()
- {
- if (!this.CheckDemand( null ))
- {
- StackCrawlMark stackMark = StackCrawlMark.LookForMyCallersCaller;
- CodeAccessSecurityEngine.Check(this, ref stackMark);
- }
- }
-
- [DynamicSecurityMethodAttribute()]
- [MethodImplAttribute(MethodImplOptions.NoInlining)] // Methods containing StackCrawlMark local var has to be marked non-inlineable
- internal static void Demand(PermissionType permissionType)
- {
- // The intent of the method is to be an internal mscorlib helper that Demands a specific permissiontype
- // without having to create objects.
- // The security annotation fxcop rule that flags all methods with a Demand() has logic
- // which checks for methods named Demand in types that implement IPermission or IStackWalk.
- Debug.Assert(new StackFrame().GetMethod().Name.Equals("Demand"), "This method needs to be named Demand");
-
- StackCrawlMark stackMark = StackCrawlMark.LookForMyCallersCaller;
- CodeAccessSecurityEngine.SpecialDemand(permissionType, ref stackMark);
- }
-
- // Metadata for this method should be flaged with REQ_SQ so that
- // EE can allocate space on the stack frame for FrameSecurityDescriptor
-
- [DynamicSecurityMethodAttribute()]
- [MethodImplAttribute(MethodImplOptions.NoInlining)] // Methods containing StackCrawlMark local var has to be marked non-inlineable
- public void Assert()
- {
- StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
- CodeAccessSecurityEngine.Assert(this, ref stackMark);
- }
-
-
- [DynamicSecurityMethodAttribute()]
- [MethodImplAttribute(MethodImplOptions.NoInlining)] // Methods containing StackCrawlMark local var has to be marked non-inlineable
- static internal void Assert(bool allPossible)
- {
- // The intent of the method is to be an internal mscorlib helper that easily asserts for all possible permissions
- // without having to new a PermissionSet.
- // The security annotation fxcop rule that flags all methods with an Assert() has logic
- // which checks for methods named Assert in types that implement IPermission or IStackWalk.
- Debug.Assert(new StackFrame().GetMethod().Name.Equals("Assert"), "This method needs to be named Assert");
-
- StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
- SecurityRuntime.AssertAllPossible(ref stackMark);
- }
-
- // Metadata for this method should be flaged with REQ_SQ so that
- // EE can allocate space on the stack frame for FrameSecurityDescriptor
-
- [DynamicSecurityMethodAttribute()]
- [MethodImplAttribute(MethodImplOptions.NoInlining)] // Methods containing StackCrawlMark local var has to be marked non-inlineable
- [Obsolete("Deny is obsolete and will be removed in a future release of the .NET Framework. See http://go.microsoft.com/fwlink/?LinkID=155570 for more information.")]
- public void Deny()
- {
- StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
- CodeAccessSecurityEngine.Deny(this, ref stackMark);
- }
-
- // Metadata for this method should be flaged with REQ_SQ so that
- // EE can allocate space on the stack frame for FrameSecurityDescriptor
-
- [DynamicSecurityMethodAttribute()]
- [MethodImplAttribute(MethodImplOptions.NoInlining)] // Methods containing StackCrawlMark local var has to be marked non-inlineable
- public void PermitOnly()
- {
- StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
- CodeAccessSecurityEngine.PermitOnly(this, ref stackMark);
- }
-
- // IPermission interfaces
-
- // We provide a default implementation of Union here.
- // Any permission that doesn't provide its own representation
- // of Union will get this one and trigger CompoundPermission
- // We can take care of simple cases here...
-
- public virtual IPermission Union(IPermission other) {
- // The other guy could be null
- if (other == null) return(this.Copy());
-
- // otherwise we don't support it.
- throw new NotSupportedException(Environment.GetResourceString( "NotSupported_SecurityPermissionUnion" ));
- }
-
- //
- // HELPERS FOR IMPLEMENTING ABSTRACT METHODS
- //
-
- //
- // Protected helper
- //
-
- internal bool VerifyType(IPermission perm)
- {
- // if perm is null, then obviously not of the same type
- if ((perm == null) || (perm.GetType() != this.GetType())) {
- return(false);
- } else {
- return(true);
- }
- }
-
- // The IPermission Interface
- public abstract IPermission Copy();
- public abstract IPermission Intersect(IPermission target);
- public abstract bool IsSubsetOf(IPermission target);
-
- [System.Runtime.InteropServices.ComVisible(false)]
- public override bool Equals(Object obj)
- {
- IPermission perm = obj as IPermission;
- if(obj != null && perm == null)
- return false;
- try {
- if(!this.IsSubsetOf(perm))
- return false;
- if(perm != null && !perm.IsSubsetOf(this))
- return false;
- }
- catch (ArgumentException)
- {
- // Any argument exception implies inequality
- // Note that we require a try/catch block here because we have to deal with
- // custom permissions that may throw exceptions indiscriminately.
- return false;
- }
- return true;
- }
-
- [System.Runtime.InteropServices.ComVisible(false)]
- public override int GetHashCode()
- {
- // This implementation is only to silence a compiler warning.
- return base.GetHashCode();
- }
-
-
- internal bool CheckDemand(CodeAccessPermission grant)
- {
- Debug.Assert( grant == null || grant.GetType().Equals( this.GetType() ), "CheckDemand not defined for permissions of different type" );
- return IsSubsetOf( grant );
- }
-
- internal bool CheckPermitOnly(CodeAccessPermission permitted)
- {
- Debug.Assert( permitted == null || permitted.GetType().Equals( this.GetType() ), "CheckPermitOnly not defined for permissions of different type" );
- return IsSubsetOf( permitted );
- }
-
- internal bool CheckDeny(CodeAccessPermission denied)
- {
- Debug.Assert( denied == null || denied.GetType().Equals( this.GetType() ), "CheckDeny not defined for permissions of different type" );
- IPermission intersectPerm = Intersect(denied);
- return (intersectPerm == null || intersectPerm.IsSubsetOf(null));
- }
-
- internal bool CheckAssert(CodeAccessPermission asserted)
- {
- Debug.Assert( asserted == null || asserted.GetType().Equals( this.GetType() ), "CheckPermitOnly not defined for permissions of different type" );
- return IsSubsetOf( asserted );
- }
- }
-}