Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Shared / MS / Win32 / SafeNativeMethodsCLR.cs / 1305600 / SafeNativeMethodsCLR.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace MS.Win32 { using System.Runtime.InteropServices; using System.Runtime.InteropServices.ComTypes; using System; using System.Security; using System.Security.Permissions; using System.Collections; using System.IO; using System.Text; using System.ComponentModel; // The SecurityHelper class differs between assemblies and could not actually be // shared, so it is duplicated across namespaces to prevent name collision. #if WINDOWS_BASE using MS.Internal.WindowsBase; #elif PRESENTATION_CORE using MS.Internal.PresentationCore; #elif PRESENTATIONFRAMEWORK using MS.Internal.PresentationFramework; #elif DRT using MS.Internal.Drt; #else #error Attempt to use a class (duplicated across multiple namespaces) from an unknown assembly. #endif using IComDataObject = System.Runtime.InteropServices.ComTypes.IDataObject; ////// Critical - This entire class is critical as it has SuppressUnmanagedCodeSecurity. /// TreatAsSafe - These Native methods have been reviewed as safe to call. /// internal static partial class SafeNativeMethods { ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical, SecurityTreatAsSafe] public static int GetMessagePos() { return SafeNativeMethodsPrivate.GetMessagePos(); } ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] public static IntPtr GetKeyboardLayout(int dwLayout) { return SafeNativeMethodsPrivate.GetKeyboardLayout(dwLayout); } ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] public static IntPtr ActivateKeyboardLayout(HandleRef hkl, int uFlags) { return SafeNativeMethodsPrivate.ActivateKeyboardLayout(hkl, uFlags); } #if BASE_NATIVEMETHODS ////// Critical - access unmanaged code via SetLastError() and IntGetKeyboardLayoutList(). /// TreatAsSafe - no returns from SetLastError(). Calling IntGetKeyboardLayoutList() is safe. /// [SecurityCritical,SecurityTreatAsSafe] public static int GetKeyboardLayoutList(int size, [Out, MarshalAs(UnmanagedType.LPArray)] IntPtr[] hkls) { UnsafeNativeMethods.SetLastError(0); int result = SafeNativeMethodsPrivate.GetKeyboardLayoutList(size, hkls); if(result == 0) { int win32Err = Marshal.GetLastWin32Error(); if (win32Err != 0) { throw new Win32Exception(win32Err); } } return result; } #endif ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] internal static void GetMonitorInfo(HandleRef hmonitor, [In, Out]NativeMethods.MONITORINFOEX info) { if (SafeNativeMethodsPrivate.IntGetMonitorInfo(hmonitor, info) == false) { throw new Win32Exception(); } } ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] public static IntPtr MonitorFromPoint(NativeMethods.POINTSTRUCT pt, int flags) { return SafeNativeMethodsPrivate.MonitorFromPoint(pt,flags); } ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] public static IntPtr MonitorFromRect(ref NativeMethods.RECT rect, int flags) { return SafeNativeMethodsPrivate.MonitorFromRect(ref rect,flags); } ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] public static IntPtr MonitorFromWindow(HandleRef handle, int flags) { return SafeNativeMethodsPrivate.MonitorFromWindow(handle, flags); } #if BASE_NATIVEMETHODS ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] public static NativeMethods.CursorHandle LoadCursor(HandleRef hInst, IntPtr iconId) { NativeMethods.CursorHandle cursorHandle = SafeNativeMethodsPrivate.LoadCursor(hInst, iconId); if(cursorHandle == null || cursorHandle.IsInvalid) { throw new Win32Exception(); } return cursorHandle; } #endif ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] public static IntPtr GetCursor() { return SafeNativeMethodsPrivate.GetCursor(); } ////// Critical: This code elevates to unmanaged code permission /// TreatAsSafe: Hiding cursor is ok /// [SecurityCritical, SecurityTreatAsSafe] public static int ShowCursor(bool show) { return SafeNativeMethodsPrivate.ShowCursor(show); } ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical, SecurityTreatAsSafe] internal static bool AdjustWindowRectEx(ref NativeMethods.RECT lpRect, int dwStyle, bool bMenu, int dwExStyle) { bool returnValue = SafeNativeMethodsPrivate.IntAdjustWindowRectEx(ref lpRect, dwStyle, bMenu, dwExStyle); if (returnValue == false) { throw new Win32Exception(); } return returnValue; } ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] internal static void GetClientRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect) { if(!SafeNativeMethodsPrivate.IntGetClientRect(hWnd, ref rect)) { throw new Win32Exception(); } } ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] internal static void GetWindowRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect) { if(!SafeNativeMethodsPrivate.IntGetWindowRect(hWnd, ref rect)) { throw new Win32Exception(); } } ////// Critical: This code elevates to unmanaged code permission /// TreatAsafe: This function is safe to call /// [SecurityCritical,SecurityTreatAsSafe] public static int GetDoubleClickTime() { return SafeNativeMethodsPrivate.GetDoubleClickTime(); } ////// Critical: This code elevates to unmanaged code permission /// TreatAsafe: This function is safe to call /// [SecurityCritical, SecurityTreatAsSafe] public static bool IsWindowEnabled(HandleRef hWnd) { return SafeNativeMethodsPrivate.IsWindowEnabled(hWnd); } ////// Critical: This code elevates to unmanaged code permission /// TreatAsafe: This function is safe to call /// [SecurityCritical, SecurityTreatAsSafe] public static bool IsWindowVisible(HandleRef hWnd) { return SafeNativeMethodsPrivate.IsWindowVisible(hWnd); } ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] internal static bool ReleaseCapture() { bool returnValue = SafeNativeMethodsPrivate.IntReleaseCapture(); if (returnValue == false) { throw new Win32Exception(); } return returnValue; } #if BASE_NATIVEMETHODS ////// Critical: This code calls into unmanaged code which elevates /// TreatAsSafe: This method is ok to give out /// [SecurityCritical,SecurityTreatAsSafe] public static bool TrackMouseEvent(NativeMethods.TRACKMOUSEEVENT tme) { bool retVal = SafeNativeMethodsPrivate.TrackMouseEvent(tme); int win32Err = Marshal.GetLastWin32Error(); // Dance around FxCop if(!retVal && win32Err != 0) { throw new System.ComponentModel.Win32Exception(win32Err); } return retVal; } // Note: this overload has no return value. If we need an overload that // returns the timer ID, then we'll need to add one. ////// Critical: This code elevates to unmanaged code permission /// TreatAsafe: This function is safe to call /// [SecurityCritical,SecurityTreatAsSafe] public static void SetTimer(HandleRef hWnd, int nIDEvent, int uElapse) { if(SafeNativeMethodsPrivate.SetTimer(hWnd, nIDEvent, uElapse, null) == IntPtr.Zero) { throw new Win32Exception(); } } // Note: this returns true or false for success. We still don't have an overload // that returns the timer ID. ////// Critical: This code elevates to unmanaged code permission /// TreatAsafe: This function is safe to call /// [SecurityCritical,SecurityTreatAsSafe] public static bool TrySetTimer(HandleRef hWnd, int nIDEvent, int uElapse) { if(SafeNativeMethodsPrivate.TrySetTimer(hWnd, nIDEvent, uElapse, null) == IntPtr.Zero) { return false; } return true; } #endif ////// Critical: This code elevates to unmanaged code permission /// TreatAsafe: This function is safe to call as in the worst case it destroys the dispatcher timer. /// it destroys a timer /// [SecurityCritical,SecurityTreatAsSafe] public static bool KillTimer(HandleRef hwnd, int idEvent) { return (SafeNativeMethodsPrivate.KillTimer(hwnd,idEvent)); } #if FRAMEWORK_NATIVEMETHODS || CORE_NATIVEMETHODS || BASE_NATIVEMETHODS ////// Critical: This code elevates to unmanaged code permission /// TreatAsafe: This function is safe to call /// [SecurityCritical,SecurityTreatAsSafe] public static int GetTickCount() { return SafeNativeMethodsPrivate.GetTickCount(); } #endif #if BASE_NATIVEMETHODS ////// Critical: This code elevates to unmanaged code permission /// TreatAsafe: It is considered safe to play sounds. /// [SecurityCritical,SecurityTreatAsSafe] public static int MessageBeep(int uType) { return SafeNativeMethodsPrivate.MessageBeep(uType); } #endif ////// Critical: This code elevates to unmanaged code permission /// TreatAsafe: This function is safe to call /// [SecurityCritical,SecurityTreatAsSafe] public static bool IsWindowUnicode(HandleRef hWnd) { return (SafeNativeMethodsPrivate.IsWindowUnicode(hWnd)); } #if BASE_NATIVEMETHODS ////// Critical: This code elevates to unmanaged code permission /// TreatAsSafe: Setting Cursor is ok /// [SecurityCritical,SecurityTreatAsSafe] public static IntPtr SetCursor(HandleRef hcursor) { return SafeNativeMethodsPrivate.SetCursor(hcursor); } ////// Critical: This code elevates to unmanaged code permission /// TreatAsSafe: Setting Cursor is ok /// [SecurityCritical,SecurityTreatAsSafe] public static IntPtr SetCursor(SafeHandle hcursor) { return SafeNativeMethodsPrivate.SetCursor(hcursor); } #endif // not used by compiler - don't include. ////// Critical: This code elevates to unmanaged code permission /// TreatAsSafe: Screen to Clien is ok to give out /// [SecurityCritical, SecurityTreatAsSafe] public static void ScreenToClient(HandleRef hWnd, [In, Out] NativeMethods.POINT pt) { if(SafeNativeMethodsPrivate.IntScreenToClient(hWnd, pt) == 0) { throw new Win32Exception(); } } ////// Critical: This code elevates to unmanaged code permission /// TreatAsSafe: Process Id is ok to give out /// [SecurityCritical, SecurityTreatAsSafe] public static int GetCurrentProcessId() { return SafeNativeMethodsPrivate.GetCurrentProcessId(); } ////// Critical: This code elevates to unmanaged code permission /// TreatAsSafe: Thread ID is ok to give out /// [SecurityCritical, SecurityTreatAsSafe] public static int GetCurrentThreadId() { return SafeNativeMethodsPrivate.GetCurrentThreadId(); } ////// This will return a valid handle only if a window on the current thread has capture /// else it will return NULL. (Refer to Platform SDK) /// Critical: This code elevates to unmanaged code permission /// TreatAsSafe: Getting mouse capture is ok /// [SecurityCritical, SecurityTreatAsSafe] public static IntPtr GetCapture() { return SafeNativeMethodsPrivate.GetCapture(); } #if BASE_NATIVEMETHODS ////// This function cannot be used to capture mouse input for another process. /// Critical: This code elevates to unmanaged code permission /// TreatAsSafe: Setting Capture is ok /// [SecurityCritical, SecurityTreatAsSafe] public static IntPtr SetCapture(HandleRef hwnd) { return SafeNativeMethodsPrivate.SetCapture(hwnd); } ////// This can be guessed anyways and does not relay any risky information /// Critical: This code elevates to unmanaged code permission /// TreatAsSafe: Getting virtual key mapping is ok /// [SecurityCritical, SecurityTreatAsSafe] internal static int MapVirtualKey(int nVirtKey, int nMapType) { return SafeNativeMethodsPrivate.MapVirtualKey(nVirtKey,nMapType); } #endif [SuppressUnmanagedCodeSecurity,SecurityCritical(SecurityCriticalScope.Everything)] private partial class SafeNativeMethodsPrivate { [DllImport(ExternDll.Kernel32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)] public static extern int GetCurrentProcessId(); [DllImport(ExternDll.Kernel32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)] public static extern int GetCurrentThreadId(); [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)] public static extern IntPtr GetCapture(); [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)] public static extern bool IsWindowVisible(HandleRef hWnd); [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)] public static extern int GetMessagePos(); [DllImport(ExternDll.User32, EntryPoint = "ReleaseCapture", ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)] public static extern bool IntReleaseCapture(); [DllImport(ExternDll.User32, EntryPoint = "GetWindowRect", ExactSpelling = true, CharSet = CharSet.Auto, SetLastError = true)] public static extern bool IntGetWindowRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect); [DllImport(ExternDll.User32, EntryPoint = "GetClientRect", ExactSpelling = true, CharSet = CharSet.Auto, SetLastError = true)] public static extern bool IntGetClientRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect); [DllImport(ExternDll.User32, EntryPoint = "AdjustWindowRectEx", ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)] public static extern bool IntAdjustWindowRectEx(ref NativeMethods.RECT lpRect, int dwStyle, bool bMenu, int dwExStyle); [DllImport(ExternDll.User32, ExactSpelling=true)] public static extern IntPtr MonitorFromRect(ref NativeMethods.RECT rect, int flags); [DllImport(ExternDll.User32, ExactSpelling = true)] public static extern IntPtr MonitorFromPoint(NativeMethods.POINTSTRUCT pt, int flags); [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=CharSet.Auto)] public static extern IntPtr ActivateKeyboardLayout(HandleRef hkl, int uFlags); [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=CharSet.Auto)] public static extern IntPtr GetKeyboardLayout(int dwLayout); [DllImport(ExternDll.User32, SetLastError = true, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)] public static extern IntPtr SetTimer(HandleRef hWnd, int nIDEvent, int uElapse, NativeMethods.TimerProc lpTimerFunc); [DllImport(ExternDll.User32, EntryPoint="SetTimer", CharSet = System.Runtime.InteropServices.CharSet.Auto)] public static extern IntPtr TrySetTimer(HandleRef hWnd, int nIDEvent, int uElapse, NativeMethods.TimerProc lpTimerFunc); [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)] public static extern bool KillTimer(HandleRef hwnd, int idEvent); [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)] public static extern bool IsWindowUnicode(HandleRef hWnd); [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=CharSet.Auto)] public static extern int GetDoubleClickTime(); [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)] public static extern bool IsWindowEnabled(HandleRef hWnd); [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)] public static extern IntPtr GetCursor(); [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)] public static extern int ShowCursor(bool show); [DllImport(ExternDll.User32, EntryPoint = "GetMonitorInfo", CharSet = CharSet.Auto, SetLastError = true)] public static extern bool IntGetMonitorInfo(HandleRef hmonitor, [In, Out]NativeMethods.MONITORINFOEX info); [DllImport(ExternDll.User32, SetLastError = true, ExactSpelling = true)] public static extern IntPtr MonitorFromWindow(HandleRef handle, int flags); #if BASE_NATIVEMETHODS [DllImport(ExternDll.User32, CharSet = CharSet.Auto)] internal static extern int MapVirtualKey(int nVirtKey, int nMapType); [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)] public static extern IntPtr SetCapture(HandleRef hwnd); [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)] public static extern IntPtr SetCursor(HandleRef hcursor); [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)] public static extern IntPtr SetCursor(SafeHandle hcursor); [DllImport(ExternDll.User32, SetLastError = true, ExactSpelling=true, CharSet=CharSet.Auto)] public static extern int GetKeyboardLayoutList(int size, [Out, MarshalAs(UnmanagedType.LPArray)] IntPtr[] hkls); [DllImport(ExternDll.User32, ExactSpelling=true, SetLastError=true)] public static extern bool TrackMouseEvent(NativeMethods.TRACKMOUSEEVENT tme); [DllImport(ExternDll.User32, CharSet=System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)] public static extern NativeMethods.CursorHandle LoadCursor(HandleRef hInst, IntPtr iconId); #endif #if BASE_NATIVEMETHODS || CORE_NATIVEMETHODS || FRAMEWORK_NATIVEMETHODS [DllImport(ExternDll.Kernel32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)] public static extern int GetTickCount(); #endif [DllImport(ExternDll.User32, EntryPoint="ScreenToClient", SetLastError=true, ExactSpelling=true, CharSet=CharSet.Auto)] public static extern int IntScreenToClient(HandleRef hWnd, [In, Out] NativeMethods.POINT pt); #if BASE_NATIVEMETHODS [DllImport(ExternDll.User32)] public static extern int MessageBeep(int uType); #endif } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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