Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Base / System / Windows / Interop / MSG.cs / 1 / MSG.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
using System;
using System.Runtime.InteropServices;
using System.Diagnostics.CodeAnalysis;
using System.Security;
using MS.Internal.WindowsBase;
namespace System.Windows.Interop
{
///
/// This class is the managed version of the Win32 MSG datatype.
///
///
/// For Avalon/WinForms interop to work, WinForms needs to be able to modify MSG structs as they are
/// processed, so they are passed by ref (it's also a perf gain)
///
/// - but in the Partial Trust scenario, this would be a security vulnerability; allowing partially trusted code
/// to intercept and arbitrarily change MSG contents could potentially create a spoofing opportunity.
///
/// - so rather than try to secure all posible current and future extensibility points against untrusted code
/// getting write access to a MSG struct during message processing, we decided the simpler, more performant, and
/// more secure, both now and going forward, solution was to secure write access to the MSG struct directly
/// at the source.
///
/// - get access is unrestricted and should in-line nicely for zero perf cost
///
/// - set access is restricted via a call to SecurityHelper.DemandUnrestrictedUIPermission, which is optimized
/// to a no-op in the Full Trust scenario, and will throw a security exception in the Partial Trust scenario
///
/// - NOTE: This breaks Avalon/WinForms interop in the Partial Trust scenario, but that's not a supported
/// scenario anyway.
///
[SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly")]
[SuppressMessage("Microsoft.Naming", "CA1705:LongAcronymsShouldBePascalCased")]
[SuppressMessage("Microsoft.Performance", "CA1815:OverrideEqualsAndOperatorEqualsOnValueTypes")]
[StructLayout(LayoutKind.Sequential)]
[Serializable]
public struct MSG
{
///
/// Critical: Setting critical data
///
[SecurityCritical]
[FriendAccessAllowed] // Built into Base, used by Core or Framework.
internal MSG(IntPtr hwnd, int message, IntPtr wParam, IntPtr lParam, int time, int pt_x, int pt_y)
{
_hwnd = hwnd;
_message = message;
_wParam = wParam;
_lParam = lParam;
_time = time;
_pt_x = pt_x;
_pt_y = pt_y;
}
//
// Public Properties:
//
///
/// The handle of the window to which the message was sent.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
[SuppressMessage("Microsoft.Design", "CA1051:DoNotDeclareVisibleInstanceFields")]
[SuppressMessage("Microsoft.Security", "CA2111:PointersShouldNotBeVisible")]
[SuppressMessage("Microsoft.Reliability", "CA2006:UseSafeHandleToEncapsulateNativeResources")]
public IntPtr hwnd
{
[SecurityCritical]
get
{
return _hwnd;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_hwnd = value;
}
}
///
/// The Value of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
public int message
{
[SecurityCritical]
get
{
return _message;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_message = value;
}
}
///
/// The wParam of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
[SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly")]
[SuppressMessage("Microsoft.Security", "CA2111:PointersShouldNotBeVisible")]
[SuppressMessage("Microsoft.Reliability", "CA2006:UseSafeHandleToEncapsulateNativeResources")]
public IntPtr wParam
{
[SecurityCritical]
get
{
return _wParam;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_wParam = value;
}
}
///
/// The lParam of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
[SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly")]
[SuppressMessage("Microsoft.Security", "CA2111:PointersShouldNotBeVisible")]
[SuppressMessage("Microsoft.Reliability", "CA2006:UseSafeHandleToEncapsulateNativeResources")]
public IntPtr lParam
{
[SecurityCritical]
get
{
return _lParam;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_lParam = value;
}
}
///
/// The time the window message was sent.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
public int time
{
[SecurityCritical]
get
{
return _time;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_time = value;
}
}
// In the original Win32, pt was a by-Value POINT structure
///
/// The X coordinate of the message POINT struct.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
[SuppressMessage("Microsoft.Naming", "CA1706:ShortAcronymsShouldBeUpperCased")]
[SuppressMessage("Microsoft.Naming", "CA1707:IdentifiersShouldNotContainUnderscores")]
public int pt_x
{
[SecurityCritical]
get
{
return _pt_x;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_pt_x = value;
}
}
///
/// The Y coordinate of the message POINT struct.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
[SuppressMessage("Microsoft.Naming", "CA1706:ShortAcronymsShouldBeUpperCased")]
[SuppressMessage("Microsoft.Naming", "CA1707:IdentifiersShouldNotContainUnderscores")]
public int pt_y
{
[SecurityCritical]
get
{
return _pt_y;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_pt_y = value;
}
}
//
// Internal data:
// - do not alter the number, order or size of ANY of this members!
// - they must agree EXACTLY with the native Win32 MSG structure
///
/// The handle of the window to which the message was sent.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private IntPtr _hwnd;
///
/// The Value of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private int _message;
///
/// The wParam of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private IntPtr _wParam;
///
/// The lParam of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private IntPtr _lParam;
///
/// The time the window message was sent.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private int _time;
///
/// The X coordinate of the message POINT struct.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private int _pt_x;
///
/// The Y coordinate of the message POINT struct.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private int _pt_y;
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
using System;
using System.Runtime.InteropServices;
using System.Diagnostics.CodeAnalysis;
using System.Security;
using MS.Internal.WindowsBase;
namespace System.Windows.Interop
{
///
/// This class is the managed version of the Win32 MSG datatype.
///
///
/// For Avalon/WinForms interop to work, WinForms needs to be able to modify MSG structs as they are
/// processed, so they are passed by ref (it's also a perf gain)
///
/// - but in the Partial Trust scenario, this would be a security vulnerability; allowing partially trusted code
/// to intercept and arbitrarily change MSG contents could potentially create a spoofing opportunity.
///
/// - so rather than try to secure all posible current and future extensibility points against untrusted code
/// getting write access to a MSG struct during message processing, we decided the simpler, more performant, and
/// more secure, both now and going forward, solution was to secure write access to the MSG struct directly
/// at the source.
///
/// - get access is unrestricted and should in-line nicely for zero perf cost
///
/// - set access is restricted via a call to SecurityHelper.DemandUnrestrictedUIPermission, which is optimized
/// to a no-op in the Full Trust scenario, and will throw a security exception in the Partial Trust scenario
///
/// - NOTE: This breaks Avalon/WinForms interop in the Partial Trust scenario, but that's not a supported
/// scenario anyway.
///
[SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly")]
[SuppressMessage("Microsoft.Naming", "CA1705:LongAcronymsShouldBePascalCased")]
[SuppressMessage("Microsoft.Performance", "CA1815:OverrideEqualsAndOperatorEqualsOnValueTypes")]
[StructLayout(LayoutKind.Sequential)]
[Serializable]
public struct MSG
{
///
/// Critical: Setting critical data
///
[SecurityCritical]
[FriendAccessAllowed] // Built into Base, used by Core or Framework.
internal MSG(IntPtr hwnd, int message, IntPtr wParam, IntPtr lParam, int time, int pt_x, int pt_y)
{
_hwnd = hwnd;
_message = message;
_wParam = wParam;
_lParam = lParam;
_time = time;
_pt_x = pt_x;
_pt_y = pt_y;
}
//
// Public Properties:
//
///
/// The handle of the window to which the message was sent.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
[SuppressMessage("Microsoft.Design", "CA1051:DoNotDeclareVisibleInstanceFields")]
[SuppressMessage("Microsoft.Security", "CA2111:PointersShouldNotBeVisible")]
[SuppressMessage("Microsoft.Reliability", "CA2006:UseSafeHandleToEncapsulateNativeResources")]
public IntPtr hwnd
{
[SecurityCritical]
get
{
return _hwnd;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_hwnd = value;
}
}
///
/// The Value of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
public int message
{
[SecurityCritical]
get
{
return _message;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_message = value;
}
}
///
/// The wParam of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
[SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly")]
[SuppressMessage("Microsoft.Security", "CA2111:PointersShouldNotBeVisible")]
[SuppressMessage("Microsoft.Reliability", "CA2006:UseSafeHandleToEncapsulateNativeResources")]
public IntPtr wParam
{
[SecurityCritical]
get
{
return _wParam;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_wParam = value;
}
}
///
/// The lParam of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
[SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly")]
[SuppressMessage("Microsoft.Security", "CA2111:PointersShouldNotBeVisible")]
[SuppressMessage("Microsoft.Reliability", "CA2006:UseSafeHandleToEncapsulateNativeResources")]
public IntPtr lParam
{
[SecurityCritical]
get
{
return _lParam;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_lParam = value;
}
}
///
/// The time the window message was sent.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
public int time
{
[SecurityCritical]
get
{
return _time;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_time = value;
}
}
// In the original Win32, pt was a by-Value POINT structure
///
/// The X coordinate of the message POINT struct.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
[SuppressMessage("Microsoft.Naming", "CA1706:ShortAcronymsShouldBeUpperCased")]
[SuppressMessage("Microsoft.Naming", "CA1707:IdentifiersShouldNotContainUnderscores")]
public int pt_x
{
[SecurityCritical]
get
{
return _pt_x;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_pt_x = value;
}
}
///
/// The Y coordinate of the message POINT struct.
///
///
/// Critical: This data can not be modified by Partial Trust code as that may be exploited for spoofing purposes
/// PublicOK: This data is safe for Partial Trust code to read (getter), There is a demand on the setter to block Partial Trust code
///
[SuppressMessage("Microsoft.Naming", "CA1706:ShortAcronymsShouldBeUpperCased")]
[SuppressMessage("Microsoft.Naming", "CA1707:IdentifiersShouldNotContainUnderscores")]
public int pt_y
{
[SecurityCritical]
get
{
return _pt_y;
}
[SecurityCritical]
set
{
SecurityHelper.DemandUnrestrictedUIPermission();
_pt_y = value;
}
}
//
// Internal data:
// - do not alter the number, order or size of ANY of this members!
// - they must agree EXACTLY with the native Win32 MSG structure
///
/// The handle of the window to which the message was sent.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private IntPtr _hwnd;
///
/// The Value of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private int _message;
///
/// The wParam of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private IntPtr _wParam;
///
/// The lParam of the window message.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private IntPtr _lParam;
///
/// The time the window message was sent.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private int _time;
///
/// The X coordinate of the message POINT struct.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private int _pt_x;
///
/// The Y coordinate of the message POINT struct.
///
///
/// Critical: This data can not be modified by Partial Trust code for spoofing purposes
///
[SecurityCritical]
private int _pt_y;
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ClosureBinding.cs
- CompoundFileDeflateTransform.cs
- DBParameter.cs
- StreamUpdate.cs
- OwnerDrawPropertyBag.cs
- Vertex.cs
- CachedBitmap.cs
- DateTime.cs
- ComIntegrationManifestGenerator.cs
- MexNamedPipeBindingCollectionElement.cs
- ListParagraph.cs
- MemberHolder.cs
- XamlToRtfParser.cs
- XMLUtil.cs
- ISCIIEncoding.cs
- VirtualPath.cs
- GCHandleCookieTable.cs
- PipelineModuleStepContainer.cs
- SortDescriptionCollection.cs
- PerformanceCounterLib.cs
- VisualBrush.cs
- RefExpr.cs
- TrackingProvider.cs
- EmptyElement.cs
- XmlSerializer.cs
- _ConnectOverlappedAsyncResult.cs
- BaseConfigurationRecord.cs
- InkCanvasSelection.cs
- DataListItemEventArgs.cs
- CompilationSection.cs
- UserPersonalizationStateInfo.cs
- HwndHostAutomationPeer.cs
- OdbcConnectionPoolProviderInfo.cs
- DictionaryManager.cs
- MessageParameterAttribute.cs
- RegexCapture.cs
- RegexMatchCollection.cs
- FunctionQuery.cs
- DbParameterCollectionHelper.cs
- TextTrailingWordEllipsis.cs
- VirtualPath.cs
- BrowserInteropHelper.cs
- MustUnderstandBehavior.cs
- PixelFormats.cs
- EncodingInfo.cs
- TraceHandler.cs
- GlyphRunDrawing.cs
- fixedPageContentExtractor.cs
- ComNativeDescriptor.cs
- AffineTransform3D.cs
- SkewTransform.cs
- TaskFormBase.cs
- SqlParameter.cs
- CodeDirectiveCollection.cs
- DefaultSection.cs
- CodeMemberField.cs
- CodeAttributeArgument.cs
- ServiceContractListItemList.cs
- CodeCompiler.cs
- PackUriHelper.cs
- TemplateXamlParser.cs
- BitmapEffect.cs
- ObjectPropertyMapping.cs
- WSFederationHttpSecurityMode.cs
- TextTreeRootTextBlock.cs
- Model3D.cs
- Duration.cs
- Figure.cs
- TypeHelper.cs
- QueryCursorEventArgs.cs
- VisualBasicHelper.cs
- SqlXmlStorage.cs
- SchemaMapping.cs
- TransformProviderWrapper.cs
- XmlNodeComparer.cs
- XPathChildIterator.cs
- QilReplaceVisitor.cs
- ClusterRegistryConfigurationProvider.cs
- TreeView.cs
- ReceiveMessageAndVerifySecurityAsyncResultBase.cs
- ButtonBaseAdapter.cs
- TextEndOfSegment.cs
- Facet.cs
- Frame.cs
- LambdaCompiler.Binary.cs
- StrokeCollectionDefaultValueFactory.cs
- ComboBoxAutomationPeer.cs
- listitem.cs
- AlternateViewCollection.cs
- Trace.cs
- InternalDispatchObject.cs
- PingOptions.cs
- AssemblyNameEqualityComparer.cs
- IIS7UserPrincipal.cs
- CompilerError.cs
- ConsoleTraceListener.cs
- DummyDataSource.cs
- DataBindingCollection.cs
- CompiledAction.cs
- ModelUtilities.cs