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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.Permissions
{
using System;
using System.IO;
using System.Security.Util;
using System.Text;
using System.Threading;
using System.Runtime.Remoting;
using System.Security;
using System.Runtime.Serialization;
using System.Reflection;
using System.Globalization;
using System.Diagnostics.Contracts;
// Keep this enum in sync with tools\ngen\ngen.cpp and inc\mscoree.idl
[Serializable]
[Flags]
[System.Runtime.InteropServices.ComVisible(true)]
public enum HostProtectionResource
{
None = 0x0,
//--------------------------------
Synchronization = 0x1,
SharedState = 0x2,
ExternalProcessMgmt = 0x4,
SelfAffectingProcessMgmt = 0x8,
ExternalThreading = 0x10,
SelfAffectingThreading = 0x20,
SecurityInfrastructure = 0x40,
UI = 0x80,
MayLeakOnAbort = 0x100,
//---------------------------------
All = 0x1ff,
}
[AttributeUsage(AttributeTargets.Method | AttributeTargets.Constructor | AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Assembly | AttributeTargets.Delegate, AllowMultiple = true, Inherited = false )]
[System.Runtime.InteropServices.ComVisible(true)]
[Serializable]
// This needs to be in the asmmeta to enable SecAnnotate to successfully resolve and run the security rules. It gets marked
// as internal by BCLRewriter so we are simply marking it as FriendAccessAllowed so it stays in the asmmeta.
[System.Runtime.CompilerServices.FriendAccessAllowedAttribute]
#pragma warning disable 618
sealed public class HostProtectionAttribute : CodeAccessSecurityAttribute
#pragma warning restore 618
{
private HostProtectionResource m_resources = HostProtectionResource.None;
public HostProtectionAttribute()
#pragma warning disable 618
: base( SecurityAction.LinkDemand )
#pragma warning restore 618
{
}
#pragma warning disable 618
public HostProtectionAttribute( SecurityAction action )
#pragma warning restore 618
: base( action )
{
#pragma warning disable 618
if (action != SecurityAction.LinkDemand)
#pragma warning restore 618
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidFlag"));
Contract.EndContractBlock();
}
public HostProtectionResource Resources {
get { return m_resources; }
set { m_resources = value; }
}
public bool Synchronization {
get { return (m_resources & HostProtectionResource.Synchronization) != 0; }
set { m_resources = (value ? m_resources | HostProtectionResource.Synchronization : m_resources & ~HostProtectionResource.Synchronization); }
}
public bool SharedState {
get { return (m_resources & HostProtectionResource.SharedState) != 0; }
set { m_resources = (value ? m_resources | HostProtectionResource.SharedState : m_resources & ~HostProtectionResource.SharedState); }
}
public bool ExternalProcessMgmt {
get { return (m_resources & HostProtectionResource.ExternalProcessMgmt) != 0; }
set { m_resources = (value ? m_resources | HostProtectionResource.ExternalProcessMgmt : m_resources & ~HostProtectionResource.ExternalProcessMgmt); }
}
public bool SelfAffectingProcessMgmt {
get { return (m_resources & HostProtectionResource.SelfAffectingProcessMgmt) != 0; }
set { m_resources = (value ? m_resources | HostProtectionResource.SelfAffectingProcessMgmt : m_resources & ~HostProtectionResource.SelfAffectingProcessMgmt); }
}
public bool ExternalThreading {
get { return (m_resources & HostProtectionResource.ExternalThreading) != 0; }
set { m_resources = (value ? m_resources | HostProtectionResource.ExternalThreading : m_resources & ~HostProtectionResource.ExternalThreading); }
}
public bool SelfAffectingThreading {
get { return (m_resources & HostProtectionResource.SelfAffectingThreading) != 0; }
set { m_resources = (value ? m_resources | HostProtectionResource.SelfAffectingThreading : m_resources & ~HostProtectionResource.SelfAffectingThreading); }
}
[System.Runtime.InteropServices.ComVisible(true)]
public bool SecurityInfrastructure {
get { return (m_resources & HostProtectionResource.SecurityInfrastructure) != 0; }
set { m_resources = (value ? m_resources | HostProtectionResource.SecurityInfrastructure : m_resources & ~HostProtectionResource.SecurityInfrastructure); }
}
public bool UI {
get { return (m_resources & HostProtectionResource.UI) != 0; }
set { m_resources = (value ? m_resources | HostProtectionResource.UI : m_resources & ~HostProtectionResource.UI); }
}
public bool MayLeakOnAbort {
get { return (m_resources & HostProtectionResource.MayLeakOnAbort) != 0; }
set { m_resources = (value ? m_resources | HostProtectionResource.MayLeakOnAbort : m_resources & ~HostProtectionResource.MayLeakOnAbort); }
}
public override IPermission CreatePermission()
{
if (m_unrestricted)
{
return new HostProtectionPermission( PermissionState.Unrestricted );
}
else
{
return new HostProtectionPermission( m_resources );
}
}
}
[Serializable]
sealed internal class HostProtectionPermission : CodeAccessPermission, IUnrestrictedPermission, IBuiltInPermission
{
//------------------------------------------------------
//
// GLOBALS
//
//------------------------------------------------------
// This value is set by PermissionSet.FilterHostProtectionPermissions. It is only used for
// constructing a HostProtectionException object. Changing it will not affect HostProtection.
internal static volatile HostProtectionResource protectedResources = HostProtectionResource.None;
//------------------------------------------------------
//
// MEMBERS
//
//------------------------------------------------------
private HostProtectionResource m_resources;
//------------------------------------------------------
//
// CONSTRUCTORS
//
//------------------------------------------------------
public HostProtectionPermission(PermissionState state)
{
if (state == PermissionState.Unrestricted)
Resources = HostProtectionResource.All;
else if (state == PermissionState.None)
Resources = HostProtectionResource.None;
else
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidPermissionState"));
}
public HostProtectionPermission(HostProtectionResource resources)
{
Resources = resources;
}
//------------------------------------------------------
//
// IPermission interface implementation
//
//------------------------------------------------------
public bool IsUnrestricted()
{
return Resources == HostProtectionResource.All;
}
//------------------------------------------------------
//
// Properties
//
//------------------------------------------------------
public HostProtectionResource Resources
{
set
{
if(value < HostProtectionResource.None || value > HostProtectionResource.All)
throw new ArgumentException(Environment.GetResourceString("Arg_EnumIllegalVal", (int)value));
Contract.EndContractBlock();
m_resources = value;
}
get
{
return m_resources;
}
}
//------------------------------------------------------
//
// IPermission interface implementation
//
//------------------------------------------------------
public override bool IsSubsetOf(IPermission target)
{
if (target == null)
return m_resources == HostProtectionResource.None;
if(this.GetType() != target.GetType())
throw new ArgumentException( Environment.GetResourceString("Argument_WrongType", this.GetType().FullName) );
return ((uint)this.m_resources & (uint)((HostProtectionPermission)target).m_resources) == (uint)this.m_resources;
}
public override IPermission Union(IPermission target)
{
if (target == null)
return(this.Copy());
if(this.GetType() != target.GetType())
throw new ArgumentException( Environment.GetResourceString("Argument_WrongType", this.GetType().FullName) );
HostProtectionResource newResources = (HostProtectionResource)((uint)this.m_resources | (uint)((HostProtectionPermission)target).m_resources);
return new HostProtectionPermission(newResources);
}
public override IPermission Intersect(IPermission target)
{
if (target == null)
return null;
if(this.GetType() != target.GetType())
throw new ArgumentException( Environment.GetResourceString("Argument_WrongType", this.GetType().FullName) );
HostProtectionResource newResources = (HostProtectionResource)((uint)this.m_resources & (uint)((HostProtectionPermission)target).m_resources);
if(newResources == HostProtectionResource.None)
return null;
return new HostProtectionPermission(newResources);
}
public override IPermission Copy()
{
return new HostProtectionPermission(m_resources);
}
//------------------------------------------------------
//
// OBJECT OVERRIDES
//
//------------------------------------------------------
/// <internalonly/>
int IBuiltInPermission.GetTokenIndex()
{
return HostProtectionPermission.GetTokenIndex();
}
internal static int GetTokenIndex()
{
return BuiltInPermissionIndex.HostProtectionPermissionIndex;
}
}
}
|
