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//
// System.Security.AccessControl.CommonObjectSecurity implementation
//
// Authors:
// Dick Porter <dick@ximian.com>
// Atsushi Enomoto <atsushi@ximian.com>
// James Bellinger <jfb@zer7.com>
//
// Copyright (C) 2005-2007 Novell, Inc (http://www.novell.com)
// Copyright (C) 2012 James Bellinger
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections.Generic;
namespace System.Security.AccessControl
{
public abstract class CommonObjectSecurity : ObjectSecurity
{
protected CommonObjectSecurity (bool isContainer)
: base (isContainer, false)
{
}
internal CommonObjectSecurity (CommonSecurityDescriptor securityDescriptor)
: base (securityDescriptor)
{
}
public AuthorizationRuleCollection GetAccessRules (bool includeExplicit, bool includeInherited, Type targetType)
{
return InternalGetAccessRules (includeExplicit, includeInherited, targetType);
}
public AuthorizationRuleCollection GetAuditRules (bool includeExplicit, bool includeInherited, Type targetType)
{
return InternalGetAuditRules (includeExplicit, includeInherited, targetType);
}
protected void AddAccessRule (AccessRule rule)
{
bool modified;
ModifyAccess (AccessControlModification.Add, rule, out modified);
}
protected bool RemoveAccessRule (AccessRule rule)
{
bool modified;
return ModifyAccess (AccessControlModification.Remove, rule, out modified);
}
protected void RemoveAccessRuleAll (AccessRule rule)
{
bool modified;
ModifyAccess (AccessControlModification.RemoveAll, rule, out modified);
}
protected void RemoveAccessRuleSpecific (AccessRule rule)
{
bool modified;
ModifyAccess (AccessControlModification.RemoveSpecific, rule, out modified);
}
protected void ResetAccessRule (AccessRule rule)
{
bool modified;
ModifyAccess (AccessControlModification.Reset, rule, out modified);
}
protected void SetAccessRule (AccessRule rule)
{
bool modified;
ModifyAccess (AccessControlModification.Set, rule, out modified);
}
protected override bool ModifyAccess (AccessControlModification modification, AccessRule rule, out bool modified)
{
if (null == rule)
throw new ArgumentNullException ("rule");
modified = true;
WriteLock ();
try {
switch (modification) {
case AccessControlModification.Add:
descriptor.DiscretionaryAcl.AddAccess (rule.AccessControlType,
SidFromIR (rule.IdentityReference),
rule.AccessMask,
rule.InheritanceFlags,
rule.PropagationFlags);
break;
case AccessControlModification.Set:
descriptor.DiscretionaryAcl.SetAccess (rule.AccessControlType,
SidFromIR (rule.IdentityReference),
rule.AccessMask,
rule.InheritanceFlags,
rule.PropagationFlags);
break;
case AccessControlModification.Reset:
PurgeAccessRules (rule.IdentityReference);
goto case AccessControlModification.Add;
case AccessControlModification.Remove:
modified = descriptor.DiscretionaryAcl.RemoveAccess (rule.AccessControlType,
SidFromIR (rule.IdentityReference),
rule.AccessMask,
rule.InheritanceFlags,
rule.PropagationFlags);
break;
case AccessControlModification.RemoveAll:
PurgeAccessRules (rule.IdentityReference);
break;
case AccessControlModification.RemoveSpecific:
descriptor.DiscretionaryAcl.RemoveAccessSpecific (rule.AccessControlType,
SidFromIR (rule.IdentityReference),
rule.AccessMask,
rule.InheritanceFlags,
rule.PropagationFlags);
break;
default:
throw new ArgumentOutOfRangeException ("modification");
}
if (modified) AccessRulesModified = true;
} finally {
WriteUnlock ();
}
return modified;
}
protected void AddAuditRule (AuditRule rule)
{
bool modified;
ModifyAudit (AccessControlModification.Add, rule, out modified);
}
protected bool RemoveAuditRule (AuditRule rule)
{
bool modified;
return ModifyAudit (AccessControlModification.Remove, rule, out modified);
}
protected void RemoveAuditRuleAll (AuditRule rule)
{
bool modified;
ModifyAudit (AccessControlModification.RemoveAll, rule, out modified);
}
protected void RemoveAuditRuleSpecific (AuditRule rule)
{
bool modified;
ModifyAudit (AccessControlModification.RemoveSpecific, rule, out modified);
}
protected void SetAuditRule (AuditRule rule)
{
bool modified;
ModifyAudit (AccessControlModification.Set, rule, out modified);
}
protected override bool ModifyAudit (AccessControlModification modification, AuditRule rule, out bool modified)
{
if (null == rule)
throw new ArgumentNullException ("rule");
modified = true;
WriteLock ();
try {
switch (modification) {
case AccessControlModification.Add:
if (null == descriptor.SystemAcl)
descriptor.SystemAcl = new SystemAcl (IsContainer, IsDS, 1);
descriptor.SystemAcl.AddAudit (rule.AuditFlags,
SidFromIR (rule.IdentityReference),
rule.AccessMask,
rule.InheritanceFlags,
rule.PropagationFlags);
break;
case AccessControlModification.Set:
if (null == descriptor.SystemAcl)
descriptor.SystemAcl = new SystemAcl (IsContainer, IsDS, 1);
descriptor.SystemAcl.SetAudit (rule.AuditFlags,
SidFromIR (rule.IdentityReference),
rule.AccessMask,
rule.InheritanceFlags,
rule.PropagationFlags);
break;
case AccessControlModification.Reset:
break;
case AccessControlModification.Remove:
if (null == descriptor.SystemAcl)
modified = false;
else
modified = descriptor.SystemAcl.RemoveAudit (rule.AuditFlags,
SidFromIR (rule.IdentityReference),
rule.AccessMask,
rule.InheritanceFlags,
rule.PropagationFlags);
break;
case AccessControlModification.RemoveAll:
PurgeAuditRules (rule.IdentityReference);
break;
case AccessControlModification.RemoveSpecific:
if (null != descriptor.SystemAcl)
descriptor.SystemAcl.RemoveAuditSpecific (rule.AuditFlags,
SidFromIR (rule.IdentityReference),
rule.AccessMask,
rule.InheritanceFlags,
rule.PropagationFlags);
break;
default:
throw new ArgumentOutOfRangeException ("modification");
}
if (modified) AuditRulesModified = true;
} finally {
WriteUnlock ();
}
return modified;
}
}
}
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