100 lines
2 KiB
C++
100 lines
2 KiB
C++
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/*++
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Copyright (c) 2001 Microsoft Corporation
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Module Name:
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QuickTime5.cpp
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Abstract:
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QuickTime 5 is calling Get/SetWindowLong(GWL_WNDPROC/DWL_DLGPROC) on hwnds outside its process
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and it is passing hardcoded strings within its address space (these calls will always fail on
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win9x). On 32-bit platforms this is pretty much benign, but on ia64 the call to SetWindowLong(hwnd, DWL_DLGPROC, crap)
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succeeds in trashing private window bits in explorer windows (since the window is not a dialog hwnd).
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Notes:
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This is an app specific shim.
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History:
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7/31/2001 reinerf Created
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(QuickTime5)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(GetWindowLongA)
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APIHOOK_ENUM_ENTRY(SetWindowLongA)
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APIHOOK_ENUM_END
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LONG
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APIHOOK(GetWindowLongA)(HWND hwnd, int iIndex)
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{
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if (hwnd)
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{
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if ((iIndex == GWL_WNDPROC) ||
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(iIndex == DWL_DLGPROC))
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{
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DWORD dwPID = 0;
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GetWindowThreadProcessId(hwnd, &dwPID);
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if (GetCurrentProcessId() != dwPID)
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{
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// we are querying an hwnd that is not in our
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// process-- just fail the call
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return 0;
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}
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}
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}
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return ORIGINAL_API(GetWindowLongA)(hwnd, iIndex);
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}
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LONG
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APIHOOK(SetWindowLongA)(HWND hwnd, int iIndex, LONG lNew)
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{
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if (hwnd)
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{
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if ((iIndex == GWL_WNDPROC) ||
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(iIndex == DWL_DLGPROC))
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{
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DWORD dwPID = 0;
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GetWindowThreadProcessId(hwnd, &dwPID);
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if (GetCurrentProcessId() != dwPID)
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{
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// we are trying modify an hwnd that is not in our
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// process-- just fail the call
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return 0;
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}
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}
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}
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return ORIGINAL_API(SetWindowLongA)(hwnd, iIndex, lNew);
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}
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/*++
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Register hooked functions
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--*/
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HOOK_BEGIN
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APIHOOK_ENTRY(USER32.DLL, GetWindowLongA)
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APIHOOK_ENTRY(USER32.DLL, SetWindowLongA)
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HOOK_END
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IMPLEMENT_SHIM_END
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