157 lines
4.5 KiB
C++
157 lines
4.5 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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WorksSuite2001.cpp
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Abstract:
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Added the hook for CreateProcess to prevent IE5Setup.exe from starting
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up if the system has a higher version of IE.
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Notes:
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This is an app specific.
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History:
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03/28/2001 a-larrsh Created
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07/13/2001 prashkud Added hook for CreateProcess
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01/11/2001 robkenny Removed code that was deleting Shockwave files whenever this shim loaded.
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(WorksSuite2001)
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#include "ShimHookMacro.h"
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#include "userenv.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(CreateProcessA)
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APIHOOK_ENUM_END
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/*++
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Hooks CreateProcessA and if the process being invoked is "ie5setup.exe",
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determines the IE version on the system and if it is higher than IE 5.5,
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launches an harmless .exe like "rundll32.exe" instead.
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--*/
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BOOL
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APIHOOK(CreateProcessA)(
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LPCSTR lpApplicationName,
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LPSTR lpCommandLine,
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LPSECURITY_ATTRIBUTES lpProcessAttributes,
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LPSECURITY_ATTRIBUTES lpThreadAttributes,
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BOOL bInheritHandles,
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DWORD dwCreationFlags,
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LPVOID lpEnvironment,
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LPCSTR lpCurrentDirectory,
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LPSTARTUPINFOA lpStartupInfo,
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LPPROCESS_INFORMATION lpProcessInformation
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)
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{
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DPFN( eDbgLevelSpew, "[CreateProcessA] appname:(%s)\ncommandline:(%s)",
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lpApplicationName, lpCommandLine );
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CSTRING_TRY
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{
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CString csAppName(lpApplicationName);
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CString csCmdLine(lpCommandLine);
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if ((csAppName.Find(L"ie5setup.exe") != -1) ||
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(csCmdLine.Find(L"ie5setup.exe") != -1))
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{
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//
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// App has called CreateProcess on ie5setup.exe.
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// Check the version of IE that we have on the machine.
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//
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HKEY hKey = NULL;
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if ((RegOpenKeyExW(HKEY_LOCAL_MACHINE,
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L"Software\\Microsoft\\Internet Explorer",
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0,
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KEY_QUERY_VALUE,
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&hKey) == ERROR_SUCCESS))
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{
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WCHAR wszBuf[MAX_PATH];
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DWORD dwSize = MAX_PATH;
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if (RegQueryValueExW(hKey, L"Version", NULL, NULL,
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(LPBYTE)wszBuf, &dwSize) == ERROR_SUCCESS)
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{
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WCHAR *StopString = NULL;
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CStringParser csParser(wszBuf, L".");
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// We need at least the major and minor version numbers from the version string
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if (csParser.GetCount() >= 2)
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{
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long lVal = wcstol(csParser[0].Get(), &StopString, 10);
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if (lVal > 5)
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{
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//
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// Call rundll32.exe, which is harmless
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//
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csAppName = "";
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csCmdLine = "rundll32.exe";
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}
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else
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{
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// check the 2nd value
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StopString = NULL;
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lVal = 0;
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lVal = wcstol(csParser[1].Get(), &StopString, 10);
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if (lVal > 5)
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{
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csAppName = "";
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csCmdLine = "rundll32.exe";
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}
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}
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}
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}
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RegCloseKey(hKey);
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}
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}
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return ORIGINAL_API(CreateProcessA)(
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csAppName.GetAnsiNIE(),csCmdLine.GetAnsiNIE(),
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lpProcessAttributes,lpThreadAttributes, bInheritHandles,
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dwCreationFlags, lpEnvironment,lpCurrentDirectory,
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lpStartupInfo,lpProcessInformation);
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}
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CSTRING_CATCH
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{
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// Do nothing
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}
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return ORIGINAL_API(CreateProcessA)(lpApplicationName,
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lpCommandLine, lpProcessAttributes,
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lpThreadAttributes, bInheritHandles,
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dwCreationFlags, lpEnvironment,
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lpCurrentDirectory, lpStartupInfo,lpProcessInformation);
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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(KERNEL32.DLL, CreateProcessA)
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HOOK_END
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IMPLEMENT_SHIM_END
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