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[ACPPAGE] Do not allow shims to be applied to files in System32/WinSxs.

Browse source 
CORE-13618

svn path=/trunk/; revision=75552
This commit is contained in:
Mark Jansen 2017-08-15 12:37:25 +00:00
parent 0435bc7005
commit a5b5ed5bd3
1 changed files with 21 additions and 0 deletions
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21
reactos/dll/shellext/acppage/CLayerUIPropPage.cpp
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@ -158,6 +158,27 @@ HRESULT CLayerUIPropPage::InitFile(PCWSTR Filename)
}
return InitFile(Buffer);
}
CString tmp;
if (tmp.GetEnvironmentVariable(L"SystemRoot"))
{
tmp += L"\\System32";
if (ExpandedFilename.GetLength() >= tmp.GetLength() &&
ExpandedFilename.Left(tmp.GetLength()).MakeLower() == tmp.MakeLower())
{
ACDBG(L"Ignoring System32: %s\r\n", (PCWSTR)ExpandedFilename);
return E_FAIL;
}
tmp.GetEnvironmentVariable(L"SystemRoot");
tmp += L"\\WinSxs";
if (ExpandedFilename.GetLength() >= tmp.GetLength() &&
ExpandedFilename.Left(tmp.GetLength()).MakeLower() == tmp.MakeLower())
{
ACDBG(L"Ignoring WinSxs: %s\r\n", (PCWSTR)ExpandedFilename);
return E_FAIL;
}
}
for (size_t n = 0; g_AllowedExtensions[n]; ++n)
{
if (!wcsicmp(g_AllowedExtensions[n], pwszExt))