Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Security / AccessControl / Win32.cs / 1305376 / Win32.cs
using Microsoft.Win32; using Microsoft.Win32.SafeHandles; using System; using System.Collections; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; #if FEATURE_CORRUPTING_EXCEPTIONS using System.Runtime.ExceptionServices; #endif // FEATURE_CORRUPTING_EXCEPTIONS using System.Runtime.Versioning; using System.Security; using System.Security.Permissions; using System.Security.Principal; using System.Diagnostics.Contracts; namespace System.Security.AccessControl { internal static class Win32 { internal const System.Int32 TRUE = 1; // // Wrapper around advapi32.ConvertSecurityDescriptorToStringSecurityDescriptorW // [System.Security.SecurityCritical] // auto-generated [SecurityPermission( SecurityAction.Assert, UnmanagedCode=true )] internal static int ConvertSdToSddl( byte[] binaryForm, int requestedRevision, SecurityInfos si, out string resultSddl ) { int errorCode; IntPtr ByteArray; uint ByteArraySize = 0; if ( TRUE != Win32Native.ConvertSdToStringSd( binaryForm, ( uint )requestedRevision, ( uint )si, out ByteArray, ref ByteArraySize )) { errorCode = Marshal.GetLastWin32Error(); goto Error; } // // Extract data from the returned pointer // resultSddl = Marshal.PtrToStringUni( ByteArray ); // // Now is a good time to get rid of the returned pointer // Win32Native.LocalFree( ByteArray ); return 0; Error: resultSddl = null; if ( errorCode == Win32Native.ERROR_NOT_ENOUGH_MEMORY ) { throw new OutOfMemoryException(); } return errorCode; } // // Wrapper around advapi32.GetSecurityInfo // [System.Security.SecurityCritical] // auto-generated #if FEATURE_CORRUPTING_EXCEPTIONS [HandleProcessCorruptedStateExceptions] // #endif // FEATURE_CORRUPTING_EXCEPTIONS internal static int GetSecurityInfo( ResourceType resourceType, string name, SafeHandle handle, AccessControlSections accessControlSections, out RawSecurityDescriptor resultSd ) { resultSd = null; // // Demand unmanaged code permission // The integrator layer is free to assert this permission // and, in turn, demand another permission of its caller // new SecurityPermission( SecurityPermissionFlag.UnmanagedCode ).Demand(); int errorCode; IntPtr SidOwner, SidGroup, Dacl, Sacl, ByteArray; SecurityInfos SecurityInfos = 0; Privilege privilege = null; if (( accessControlSections & AccessControlSections.Owner ) != 0 ) { SecurityInfos |= SecurityInfos.Owner; } if (( accessControlSections & AccessControlSections.Group ) != 0 ) { SecurityInfos |= SecurityInfos.Group; } if (( accessControlSections & AccessControlSections.Access ) != 0 ) { SecurityInfos |= SecurityInfos.DiscretionaryAcl; } if (( accessControlSections & AccessControlSections.Audit ) != 0 ) { SecurityInfos |= SecurityInfos.SystemAcl; privilege = new Privilege( Privilege.Security ); } // Ensure that the finally block will execute RuntimeHelpers.PrepareConstrainedRegions(); try { if ( privilege != null ) { try { privilege.Enable(); } catch (PrivilegeNotHeldException) { // we will ignore this exception and press on just in case this is a remote resource } } if ( name != null ) { errorCode = ( int )Win32Native.GetSecurityInfoByName( name, ( uint )resourceType, ( uint )SecurityInfos, out SidOwner, out SidGroup, out Dacl, out Sacl, out ByteArray ); } else if (handle != null) { if (handle.IsInvalid) { throw new ArgumentException( Environment.GetResourceString( "Argument_InvalidSafeHandle" ), "handle" ); } else { errorCode = ( int )Win32Native.GetSecurityInfoByHandle( handle, ( uint )resourceType, ( uint )SecurityInfos, out SidOwner, out SidGroup, out Dacl, out Sacl, out ByteArray ); } } else { // both are null, shouldn't happen throw new SystemException(); } if ( errorCode == Win32Native.ERROR_SUCCESS && IntPtr.Zero.Equals(ByteArray) ) { // // This means that the object doesn't have a security descriptor. And thus we throw // a specific exception for the caller to catch and handle properly. // throw new InvalidOperationException(Environment.GetResourceString( "InvalidOperation_NoSecurityDescriptor" )); } else if (errorCode == Win32Native.ERROR_NOT_ALL_ASSIGNED || errorCode == Win32Native.ERROR_PRIVILEGE_NOT_HELD) { throw new PrivilegeNotHeldException( Privilege.Security ); } else if ( errorCode == Win32Native.ERROR_ACCESS_DENIED || errorCode == Win32Native.ERROR_CANT_OPEN_ANONYMOUS ) { throw new UnauthorizedAccessException(); } if ( errorCode != Win32Native.ERROR_SUCCESS ) { goto Error; } } catch { // protection against exception filter-based luring attacks if ( privilege != null ) { privilege.Revert(); } throw; } finally { if ( privilege != null ) { privilege.Revert(); } } // // Extract data from the returned pointer // uint Length = Win32Native.GetSecurityDescriptorLength( ByteArray ); byte[] BinaryForm = new byte[Length]; Marshal.Copy( ByteArray, BinaryForm, 0, ( int )Length ); Win32Native.LocalFree( ByteArray ); resultSd = new RawSecurityDescriptor( BinaryForm, 0 ); return Win32Native.ERROR_SUCCESS; Error: if ( errorCode == Win32Native.ERROR_NOT_ENOUGH_MEMORY ) { throw new OutOfMemoryException(); } return errorCode; } // // Wrapper around advapi32.SetNamedSecurityInfoW and advapi32.SetSecurityInfo // [System.Security.SecuritySafeCritical] // auto-generated [ResourceExposure(ResourceScope.Machine)] [ResourceConsumption(ResourceScope.Machine)] #if FEATURE_CORRUPTING_EXCEPTIONS [HandleProcessCorruptedStateExceptions] // #endif // FEATURE_CORRUPTING_EXCEPTIONS internal static int SetSecurityInfo( ResourceType type, string name, SafeHandle handle, SecurityInfos securityInformation, SecurityIdentifier owner, SecurityIdentifier group, GenericAcl sacl, GenericAcl dacl ) { int errorCode; int Length; byte[] OwnerBinary = null, GroupBinary = null, SaclBinary = null, DaclBinary = null; Privilege securityPrivilege = null; // // Demand unmanaged code permission // The integrator layer is free to assert this permission // and, in turn, demand another permission of its caller // new SecurityPermission( SecurityPermissionFlag.UnmanagedCode ).Demand(); if ( owner != null ) { Length = owner.BinaryLength; OwnerBinary = new byte[Length]; owner.GetBinaryForm( OwnerBinary, 0 ); } if ( group != null ) { Length = group.BinaryLength; GroupBinary = new byte[Length]; group.GetBinaryForm( GroupBinary, 0 ); } if ( dacl != null ) { Length = dacl.BinaryLength; DaclBinary = new byte[Length]; dacl.GetBinaryForm( DaclBinary, 0 ); } if ( sacl != null ) { Length = sacl.BinaryLength; SaclBinary = new byte[Length]; sacl.GetBinaryForm( SaclBinary, 0 ); } if ( ( securityInformation & SecurityInfos.SystemAcl ) != 0 ) { // // Enable security privilege if trying to set a SACL. // Note: even setting it by handle needs this privilege enabled! // securityPrivilege = new Privilege( Privilege.Security ); } // Ensure that the finally block will execute RuntimeHelpers.PrepareConstrainedRegions(); try { if ( securityPrivilege != null ) { try { securityPrivilege.Enable(); } catch (PrivilegeNotHeldException) { // we will ignore this exception and press on just in case this is a remote resource } } if ( name != null ) { errorCode = ( int )Win32Native.SetSecurityInfoByName( name, ( uint )type, ( uint )securityInformation, OwnerBinary, GroupBinary, DaclBinary, SaclBinary ); } else if (handle != null) { if (handle.IsInvalid) { throw new ArgumentException( Environment.GetResourceString( "Argument_InvalidSafeHandle" ), "handle" ); } else { errorCode = ( int )Win32Native.SetSecurityInfoByHandle( handle, ( uint )type, ( uint )securityInformation, OwnerBinary, GroupBinary, DaclBinary, SaclBinary ); } } else { // both are null, shouldn't happen Contract.Assert( false, "Internal error: both name and handle are null" ); throw new InvalidProgramException(); } if (errorCode == Win32Native.ERROR_NOT_ALL_ASSIGNED || errorCode == Win32Native.ERROR_PRIVILEGE_NOT_HELD) { throw new PrivilegeNotHeldException( Privilege.Security ); } else if ( errorCode == Win32Native.ERROR_ACCESS_DENIED || errorCode == Win32Native.ERROR_CANT_OPEN_ANONYMOUS ) { throw new UnauthorizedAccessException(); } else if ( errorCode != Win32Native.ERROR_SUCCESS ) { goto Error; } } catch { // protection against exception filter-based luring attacks if ( securityPrivilege != null ) { securityPrivilege.Revert(); } throw; } finally { if ( securityPrivilege != null ) { securityPrivilege.Revert(); } } return 0; Error: if ( errorCode == Win32Native.ERROR_NOT_ENOUGH_MEMORY ) { throw new OutOfMemoryException(); } return errorCode; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SingleStorage.cs
- DbConnectionPoolIdentity.cs
- AncestorChangedEventArgs.cs
- _SSPIWrapper.cs
- FrameworkRichTextComposition.cs
- InfiniteIntConverter.cs
- HttpDebugHandler.cs
- ContentControl.cs
- storepermissionattribute.cs
- RSAProtectedConfigurationProvider.cs
- securestring.cs
- HtmlInputImage.cs
- GeneralTransformGroup.cs
- DbXmlEnabledProviderManifest.cs
- ImageCodecInfoPrivate.cs
- Point4D.cs
- ReaderContextStackData.cs
- GridViewColumnHeader.cs
- ElapsedEventArgs.cs
- ItemsChangedEventArgs.cs
- Variable.cs
- AmbientProperties.cs
- RadioButtonRenderer.cs
- ImageKeyConverter.cs
- DataContractAttribute.cs
- MsmqIntegrationSecurity.cs
- WsdlInspector.cs
- XsltContext.cs
- ConfigurationFileMap.cs
- InlineObject.cs
- DisplayInformation.cs
- DataSourceControlBuilder.cs
- LineGeometry.cs
- RSAPKCS1KeyExchangeFormatter.cs
- MatrixTransform.cs
- Compress.cs
- wgx_sdk_version.cs
- RadialGradientBrush.cs
- DoubleStorage.cs
- PackageRelationshipSelector.cs
- WeakHashtable.cs
- Int64AnimationUsingKeyFrames.cs
- DropShadowEffect.cs
- DataMemberConverter.cs
- CommandManager.cs
- SecureStringHasher.cs
- RoutedUICommand.cs
- SQLInt64Storage.cs
- MultiBindingExpression.cs
- ValueType.cs
- PixelShader.cs
- ProfileGroupSettings.cs
- IODescriptionAttribute.cs
- TextTreeText.cs
- SerializerDescriptor.cs
- bidPrivateBase.cs
- ExpressionPrefixAttribute.cs
- ClusterRegistryConfigurationProvider.cs
- documentsequencetextpointer.cs
- CachedFontFamily.cs
- WpfSharedBamlSchemaContext.cs
- ColorAnimation.cs
- TypeUtil.cs
- Hash.cs
- AssemblyUtil.cs
- PerfCounterSection.cs
- HighContrastHelper.cs
- Operand.cs
- TimeBoundedCache.cs
- MessageQueueEnumerator.cs
- _CacheStreams.cs
- CodeTypeMemberCollection.cs
- TextEditorTables.cs
- BitmapEffectDrawingContextState.cs
- XmlBinaryReader.cs
- TypeContext.cs
- CodeExpressionStatement.cs
- ExpressionBinding.cs
- XmlObjectSerializer.cs
- ItemCollection.cs
- ItemMap.cs
- CopyCodeAction.cs
- RtType.cs
- JsonReader.cs
- TreeViewImageIndexConverter.cs
- EventWaitHandle.cs
- StringFormat.cs
- SkinIDTypeConverter.cs
- Journal.cs
- SystemColors.cs
- SelectionProcessor.cs
- ProvidersHelper.cs
- Registry.cs
- ComponentEditorPage.cs
- BufferModesCollection.cs
- ProcessThread.cs
- PropertyBuilder.cs
- DataColumnSelectionConverter.cs
- XmlILIndex.cs
- ScriptServiceAttribute.cs