Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Security / CodeAccessPermission.cs / 1305376 / CodeAccessPermission.cs
// ==++==
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// ==--==
// [....]
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]
[SecurityPermissionAttribute( SecurityAction.InheritanceDemand, ControlEvidence = true, ControlPolicy = true )]
[System.Runtime.InteropServices.ComVisible(true)]
abstract public class CodeAccessPermission
: IPermission, ISecurityEncodable, IStackWalk
{
// Static methods for manipulation of stack
[System.Security.SecuritySafeCritical] // auto-generated
[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);
}
[System.Security.SecuritySafeCritical] // auto-generated
[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[Obsolete("Deny is obsolete and will be removed in a future release of the .NET Framework.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);
}
[System.Security.SecuritySafeCritical] // auto-generated
[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);
}
[System.Security.SecuritySafeCritical] // auto-generated
[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).
[System.Security.SecuritySafeCritical] // auto-generated
[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);
}
}
[System.Security.SecuritySafeCritical] // auto-generated
[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.
Contract.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
[System.Security.SecuritySafeCritical] // auto-generated
[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);
}
[System.Security.SecuritySafeCritical] // auto-generated
[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.
Contract.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
[System.Security.SecuritySafeCritical] // auto-generated
[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
[System.Security.SecuritySafeCritical] // auto-generated
[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" ));
}
#if FEATURE_CAS_POLICY
static internal SecurityElement CreatePermissionElement( IPermission perm, String permname )
{
SecurityElement root = new SecurityElement( "IPermission" );
XMLUtil.AddClassAttribute( root, perm.GetType(), permname );
// If you hit this assert then most likely you are trying to change the name of this class.
// This is ok as long as you change the hard coded string above and change the assert below.
Contract.Assert( perm.GetType().FullName.Equals( permname ), "Incorrect class name passed in! Was: " + permname + " Should be " + perm.GetType().FullName);
root.AddAttribute( "version", "1" );
return root;
}
static internal void ValidateElement( SecurityElement elem, IPermission perm )
{
if (elem == null)
throw new ArgumentNullException( "elem" );
Contract.EndContractBlock();
if (!XMLUtil.IsPermissionElement( perm, elem ))
throw new ArgumentException( Environment.GetResourceString( "Argument_NotAPermissionElement"));
String version = elem.Attribute( "version" );
if (version != null && !version.Equals( "1" ))
throw new ArgumentException( Environment.GetResourceString( "Argument_InvalidXMLBadVersion") );
}
abstract public SecurityElement ToXml();
abstract public void FromXml( SecurityElement elem );
//
// Unimplemented interface methods
// (as a reminder only)
//
public override String ToString()
{
return ToXml().ToString();
}
#endif // FEATURE_CAS_POLICY
//
// 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)
{
Contract.Assert( grant == null || grant.GetType().Equals( this.GetType() ), "CheckDemand not defined for permissions of different type" );
return IsSubsetOf( grant );
}
internal bool CheckPermitOnly(CodeAccessPermission permitted)
{
Contract.Assert( permitted == null || permitted.GetType().Equals( this.GetType() ), "CheckPermitOnly not defined for permissions of different type" );
return IsSubsetOf( permitted );
}
internal bool CheckDeny(CodeAccessPermission denied)
{
Contract.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)
{
Contract.Assert( asserted == null || asserted.GetType().Equals( this.GetType() ), "CheckPermitOnly not defined for permissions of different type" );
return IsSubsetOf( asserted );
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// ==++==
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// ==--==
// [....]
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]
[SecurityPermissionAttribute( SecurityAction.InheritanceDemand, ControlEvidence = true, ControlPolicy = true )]
[System.Runtime.InteropServices.ComVisible(true)]
abstract public class CodeAccessPermission
: IPermission, ISecurityEncodable, IStackWalk
{
// Static methods for manipulation of stack
[System.Security.SecuritySafeCritical] // auto-generated
[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);
}
[System.Security.SecuritySafeCritical] // auto-generated
[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);
}
[System.Security.SecuritySafeCritical] // auto-generated
[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);
}
[System.Security.SecuritySafeCritical] // auto-generated
[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).
[System.Security.SecuritySafeCritical] // auto-generated
[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);
}
}
[System.Security.SecuritySafeCritical] // auto-generated
[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.
Contract.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
[System.Security.SecuritySafeCritical] // auto-generated
[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);
}
[System.Security.SecuritySafeCritical] // auto-generated
[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.
Contract.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
[System.Security.SecuritySafeCritical] // auto-generated
[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
[System.Security.SecuritySafeCritical] // auto-generated
[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" ));
}
#if FEATURE_CAS_POLICY
static internal SecurityElement CreatePermissionElement( IPermission perm, String permname )
{
SecurityElement root = new SecurityElement( "IPermission" );
XMLUtil.AddClassAttribute( root, perm.GetType(), permname );
// If you hit this assert then most likely you are trying to change the name of this class.
// This is ok as long as you change the hard coded string above and change the assert below.
Contract.Assert( perm.GetType().FullName.Equals( permname ), "Incorrect class name passed in! Was: " + permname + " Should be " + perm.GetType().FullName);
root.AddAttribute( "version", "1" );
return root;
}
static internal void ValidateElement( SecurityElement elem, IPermission perm )
{
if (elem == null)
throw new ArgumentNullException( "elem" );
Contract.EndContractBlock();
if (!XMLUtil.IsPermissionElement( perm, elem ))
throw new ArgumentException( Environment.GetResourceString( "Argument_NotAPermissionElement"));
String version = elem.Attribute( "version" );
if (version != null && !version.Equals( "1" ))
throw new ArgumentException( Environment.GetResourceString( "Argument_InvalidXMLBadVersion") );
}
abstract public SecurityElement ToXml();
abstract public void FromXml( SecurityElement elem );
//
// Unimplemented interface methods
// (as a reminder only)
//
public override String ToString()
{
return ToXml().ToString();
}
#endif // FEATURE_CAS_POLICY
//
// 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)
{
Contract.Assert( grant == null || grant.GetType().Equals( this.GetType() ), "CheckDemand not defined for permissions of different type" );
return IsSubsetOf( grant );
}
internal bool CheckPermitOnly(CodeAccessPermission permitted)
{
Contract.Assert( permitted == null || permitted.GetType().Equals( this.GetType() ), "CheckPermitOnly not defined for permissions of different type" );
return IsSubsetOf( permitted );
}
internal bool CheckDeny(CodeAccessPermission denied)
{
Contract.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)
{
Contract.Assert( asserted == null || asserted.GetType().Equals( this.GetType() ), "CheckPermitOnly not defined for permissions of different type" );
return IsSubsetOf( asserted );
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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