ObjectSecurityT.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Security / AccessControl / ObjectSecurityT.cs / 1305376 / ObjectSecurityT.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  ObjectSecurity 
**
** Purpose: Generic Managed ACL wrapper 
**
** Date:  February 7, 2007
**
===========================================================*/ 

using System; 
using System.Runtime.InteropServices; 
using System.Security.AccessControl;
using System.Security.Permissions; 
using System.Security.Principal;
using Microsoft.Win32.SafeHandles;

namespace System.Security.AccessControl { 
    public class AccessRule : AccessRule where T : struct {
 
        #region Constructors 
        //
        // Constructors for creating access rules for file objects 
        //

        public AccessRule(
            IdentityReference identity, 
            T rights,
            AccessControlType type) 
            : this( 
                identity,
                (int)(object)rights, 
                false,
                InheritanceFlags.None,
                PropagationFlags.None,
                type) { } 

        public AccessRule( 
            String identity, 
            T rights,
            AccessControlType type) 
            : this(
                new NTAccount(identity),
                (int)(object)rights,
                false, 
                InheritanceFlags.None,
                PropagationFlags.None, 
                type) { } 

        // 
        // Constructor for creating access rules for folder objects
        //

        public AccessRule( 
            IdentityReference identity,
            T rights, 
            InheritanceFlags inheritanceFlags, 
            PropagationFlags propagationFlags,
            AccessControlType type) 
            : this(
                identity,
                (int)(object)rights,
                false, 
                inheritanceFlags,
                propagationFlags, 
                type) { } 

        public AccessRule( 
            String identity,
            T rights,
            InheritanceFlags inheritanceFlags,
            PropagationFlags propagationFlags, 
            AccessControlType type)
            : this( 
                new NTAccount(identity), 
                (int)(object)rights,
                false, 
                inheritanceFlags,
                propagationFlags,
                type) { }
 
        //
        // Internal constructor to be called by public constructors 
        // and the access rule factory methods of ObjectSecurity 
        //
 
        internal AccessRule(
            IdentityReference identity,
            int accessMask,
            bool isInherited, 
            InheritanceFlags inheritanceFlags,
            PropagationFlags propagationFlags, 
            AccessControlType type) 
            : base(
                identity, 
                accessMask,
                isInherited,
                inheritanceFlags,
                propagationFlags, 
                type) { }
 
        #endregion 

        #region Public properties 

        public T Rights {
            get { return (T)(object)base.AccessMask; }
        } 

        #endregion 
    } 

 
    public class AuditRule : AuditRule where T : struct {
        #region Constructors

        public AuditRule( 
            IdentityReference identity,
            T rights, 
            AuditFlags flags) 
            : this(
                identity, 
                rights,
                InheritanceFlags.None,
                PropagationFlags.None,
                flags) { 
        }
 
        public AuditRule( 
            IdentityReference identity,
            T rights, 
            InheritanceFlags inheritanceFlags,
            PropagationFlags propagationFlags,
            AuditFlags flags)
            : this( 
                identity,
                (int)(object)rights, 
                false, 
                inheritanceFlags,
                propagationFlags, 
                flags) {
        }

        public AuditRule( 
            String identity,
            T rights, 
            AuditFlags flags) 
            : this(
                new NTAccount(identity), 
                rights,
                InheritanceFlags.None,
                PropagationFlags.None,
                flags) { 
        }
 
        public AuditRule( 
            String identity,
            T rights, 
            InheritanceFlags inheritanceFlags,
            PropagationFlags propagationFlags,
            AuditFlags flags)
            : this( 
                new NTAccount(identity),
                (int)(object)rights, 
                false, 
                inheritanceFlags,
                propagationFlags, 
                flags) {
        }

        internal AuditRule( 
            IdentityReference identity,
            int accessMask, 
            bool isInherited, 
            InheritanceFlags inheritanceFlags,
            PropagationFlags propagationFlags, 
            AuditFlags flags)
            : base(
                identity,
                accessMask, 
                isInherited,
                inheritanceFlags, 
                propagationFlags, 
                flags) {
        } 

        #endregion

        #region Public properties 

        public T Rights { 
            get { return (T)(object)base.AccessMask; } 
        }
 
        #endregion
    }

 
    public abstract class ObjectSecurity : NativeObjectSecurity where T : struct {
        #region Constructors 
 
        [System.Security.SecuritySafeCritical]  // auto-generated
        protected ObjectSecurity(bool isContainer, ResourceType resourceType) 
            : base(isContainer, resourceType, null, null) { }

        [System.Security.SecuritySafeCritical]  // auto-generated
        protected ObjectSecurity(bool isContainer, ResourceType resourceType, string name, AccessControlSections includeSections) 
            : base(isContainer, resourceType, name, includeSections, null, null) { }
 
        [System.Security.SecuritySafeCritical]  // auto-generated 
        protected ObjectSecurity(bool isContainer, ResourceType resourceType, string name, AccessControlSections includeSections, ExceptionFromErrorCode exceptionFromErrorCode, object exceptionContext)
            : base(isContainer, resourceType, name, includeSections, exceptionFromErrorCode, exceptionContext) { } 

        [System.Security.SecuritySafeCritical]  // auto-generated
        protected ObjectSecurity(bool isContainer, ResourceType resourceType, SafeHandle safeHandle, AccessControlSections includeSections)
            : base(isContainer, resourceType, safeHandle, includeSections, null, null) { } 

        [System.Security.SecuritySafeCritical]  // auto-generated 
        protected ObjectSecurity(bool isContainer, ResourceType resourceType, SafeHandle safeHandle, AccessControlSections includeSections, ExceptionFromErrorCode exceptionFromErrorCode, object exceptionContext) 
            : base(isContainer, resourceType, safeHandle, includeSections, exceptionFromErrorCode, exceptionContext) { }
 
        #endregion
        #region Factories

        public override AccessRule AccessRuleFactory( 
            IdentityReference identityReference,
            int accessMask, 
            bool isInherited, 
            InheritanceFlags inheritanceFlags,
            PropagationFlags propagationFlags, 
            AccessControlType type) {
            return new AccessRule(
                identityReference,
                accessMask, 
                isInherited,
                inheritanceFlags, 
                propagationFlags, 
                type);
        } 

        public override AuditRule AuditRuleFactory(
            IdentityReference identityReference,
            int accessMask, 
            bool isInherited,
            InheritanceFlags inheritanceFlags, 
            PropagationFlags propagationFlags, 
            AuditFlags flags) {
            return new AuditRule( 
                identityReference,
                accessMask,
                isInherited,
                inheritanceFlags, 
                propagationFlags,
                flags); 
        } 

        #endregion 
        #region Private Methods

        private AccessControlSections GetAccessControlSectionsFromChanges() {
            AccessControlSections persistRules = AccessControlSections.None; 
            if (AccessRulesModified) {
                persistRules = AccessControlSections.Access; 
            } 
            if (AuditRulesModified) {
                persistRules |= AccessControlSections.Audit; 
            }
            if (OwnerModified) {
                persistRules |= AccessControlSections.Owner;
            } 
            if (GroupModified) {
                persistRules |= AccessControlSections.Group; 
            } 
            return persistRules;
        } 

        #endregion
        #region Protected Methods
 
        // Use this in your own Persist after you have demanded any appropriate CAS permissions.
        // Note that you will want your version to be internal and use a specialized Safe Handle. 
        //  
        // 
        //  
        [System.Security.SecuritySafeCritical]  // auto-generated
        [SecurityPermission(SecurityAction.Assert, UnmanagedCode = true)]
        protected internal void Persist(SafeHandle handle) {
            WriteLock(); 

            try { 
                AccessControlSections persistRules = GetAccessControlSectionsFromChanges(); 
                base.Persist(handle, persistRules);
                OwnerModified = GroupModified = AuditRulesModified = AccessRulesModified = false; 
            }
            finally {
                WriteUnlock();
            } 
        }
 
        // Use this in your own Persist after you have demanded any appropriate CAS permissions. 
        // Note that you will want your version to be internal.
        [System.Security.SecuritySafeCritical]  // auto-generated 
        [SecurityPermission(SecurityAction.Assert, UnmanagedCode = true)]
        protected internal void Persist(String name) {
            WriteLock();
 
            try {
                AccessControlSections persistRules = GetAccessControlSectionsFromChanges(); 
                base.Persist(name, persistRules); 
                OwnerModified = GroupModified = AuditRulesModified = AccessRulesModified = false;
            } 
            finally {
                WriteUnlock();
            }
        } 

        #endregion 
        #region Public Methods 

        // Override these if you need to do some custom bit remapping to hide any 
        // complexity from the user.
        public virtual void AddAccessRule(AccessRule rule) {
            base.AddAccessRule(rule);
        } 

        public virtual void SetAccessRule(AccessRule rule) { 
            base.SetAccessRule(rule); 
        }
 
        public virtual void ResetAccessRule(AccessRule rule) {
            base.ResetAccessRule(rule);
        }
 
        public virtual bool RemoveAccessRule(AccessRule rule) {
            return base.RemoveAccessRule(rule); 
        } 

        public virtual void RemoveAccessRuleAll(AccessRule rule) { 
            base.RemoveAccessRuleAll(rule);
        }

        public virtual void RemoveAccessRuleSpecific(AccessRule rule) { 
            base.RemoveAccessRuleSpecific(rule);
        } 
 
        public virtual void AddAuditRule(AuditRule rule) {
            base.AddAuditRule(rule); 
        }

        public virtual void SetAuditRule(AuditRule rule) {
            base.SetAuditRule(rule); 
        }
 
        public virtual bool RemoveAuditRule(AuditRule rule) { 
            return base.RemoveAuditRule(rule);
        } 

        public virtual void RemoveAuditRuleAll(AuditRule rule) {
            base.RemoveAuditRuleAll(rule);
        } 

        public virtual void RemoveAuditRuleSpecific(AuditRule rule) { 
            base.RemoveAuditRuleSpecific(rule); 
        }
 
        #endregion
        #region some overrides

        public override Type AccessRightType { 
            get { return typeof(T); }
        } 
 
        public override Type AccessRuleType {
            get { return typeof(AccessRule); } 
        }

        public override Type AuditRuleType {
            get { return typeof(AuditRule); } 
        }
        #endregion 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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