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//////////////////////////////////////////////////////////////////////////////
//
// Test the different system region bounds (region.cpp of region.exe)
//
// Microsoft Research Detours Package
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
#include <stdio.h>
#include <windows.h>
#include <detours.h>
//////////////////////////////////////////////////////////////////////////////
//
static DWORD (WINAPI * TrueSleepEx)(DWORD dwMilliseconds, BOOL bAlertable) = SleepEx;
DWORD WINAPI LoudSleepEx(DWORD dwMilliseconds, BOOL bAlertable)
{
DWORD dwBeg = GetTickCount();
DWORD ret = TrueSleepEx(dwMilliseconds, bAlertable);
DWORD dwEnd = GetTickCount();
printf("Slept %lu ticks.\n", dwEnd - dwBeg);
return ret;
}
//////////////////////////////////////////////////////////////////////////////
//
PVOID AttachAndDetach(DWORD dwMilliseconds)
{
LONG error;
PVOID trampoline;
DetourTransactionBegin();
DetourUpdateThread(GetCurrentThread());
DetourAttach(&(PVOID&)TrueSleepEx, LoudSleepEx);
error = DetourTransactionCommit();
printf("Attach: %ld, Trampoline: %p\n", error, TrueSleepEx);
trampoline = TrueSleepEx;
printf("\n");
printf("Sleep(%lu)\n", dwMilliseconds);
Sleep(dwMilliseconds);
printf("\n");
DetourTransactionBegin();
DetourUpdateThread(GetCurrentThread());
DetourDetach(&(PVOID&)TrueSleepEx, LoudSleepEx);
error = DetourTransactionCommit();
return trampoline;
}
int main(int argc, char **argv)
{
(void)argc;
(void)argv;
// First, save the default system region.
PVOID pDefaultLower = DetourSetSystemRegionLowerBound(NULL);
PVOID pDefaultUpper = DetourSetSystemRegionUpperBound(NULL);
// Now attach the detour with the default system region.
DetourSetSystemRegionLowerBound(pDefaultLower);
DetourSetSystemRegionUpperBound(pDefaultUpper);
printf("%p..%p: ", pDefaultLower, pDefaultUpper);
PVOID pTramp1 = AttachAndDetach(10);
printf("%p..%p: ", pDefaultLower, pDefaultUpper);
PVOID pTramp2 = AttachAndDetach(10);
// Now attach the detour with a smaller system region.
PVOID pSmallerLower = (PVOID)( ((ULONG_PTR)pTramp1) & ~(ULONG_PTR)0x3fffffff );
PVOID pSmallerUpper = (PVOID)( ((ULONG_PTR)pTramp1 + 0x3fffffff) & ~(ULONG_PTR)0x3fffffff );
DetourSetSystemRegionLowerBound(pSmallerLower);
DetourSetSystemRegionUpperBound(pSmallerUpper);
printf("%p..%p: ", pSmallerLower, pSmallerUpper);
PVOID pTramp3 = AttachAndDetach(20);
printf("Sleep(30)\n");
Sleep(30);
printf("\n");
if (pTramp1 != pTramp2) {
printf("!!!!!! Trampoling allocation is not deterministic. %p != %p\n", pTramp1, pTramp2);
return 1;
}
else if (pTramp2 == pTramp3) {
printf("!!!!!! Trampoling allocation doesn't skip region. %p == %p\n", pTramp2, pTramp3);
return 2;
}
return 0;
}
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