/* $Id: tstRTMemSafer.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */ /** @file * IPRT Testcase - RTMemSafer* functions. */ /* * Copyright (C) 2012-2019 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #include #include #include #include #include #include #if defined(VBOX) && (defined(RT_ARCH_X86) || defined(RT_ARCH_AMD64)) # include #endif static void doMemSaferScramble(RTTEST hTest, void *pvBuf, size_t cbAlloc) { RT_NOREF_PV(hTest); /* * Fill it with random bytes and make a reference copy of these. */ RTRandBytes(pvBuf, cbAlloc); void *pvRef = RTMemDup(pvBuf, cbAlloc); RTTESTI_CHECK_RETV(pvRef); /* * Scramble the allocation and check that it no longer matches the refernece bytes. */ int rc = RTMemSaferScramble(pvBuf, cbAlloc); if (RT_SUCCESS(rc)) { if (!memcmp(pvRef, pvBuf, cbAlloc)) RTTestIFailed("Memory blocks must differ (%z bytes, 0x%p vs. 0x%p)!\n", cbAlloc, pvRef, pvBuf); else { /* * Check that unscrambling returns the original content. */ rc = RTMemSaferUnscramble(pvBuf, cbAlloc); if (RT_SUCCESS(rc)) { if (memcmp(pvRef, pvBuf, cbAlloc)) RTTestIFailed("Memory blocks must not differ (%z bytes, 0x%p vs. 0x%p)!\n", cbAlloc, pvRef, pvBuf); } else RTTestIFailed("Unscrambling %z bytes failed with %Rrc!\n", cbAlloc, rc); } } else RTTestIFailed("Scrambling %z bytes failed with %Rrc!\n", cbAlloc, rc); RTMemFree(pvRef); } static void doMemSaferAllocation(RTTEST hTest) { size_t cbAlloc = RTRandS32Ex(1, _1M) * sizeof(uint8_t); void *pvBuf = NULL; int rc = RTMemSaferAllocZEx(&pvBuf, cbAlloc, 0); if (RT_SUCCESS(rc)) { /* Fill it with random bytes. */ RTRandBytes(pvBuf, cbAlloc); /* Scrambling test */ doMemSaferScramble(hTest, pvBuf, cbAlloc); RTMemSaferFree(pvBuf, cbAlloc); } else RTTestIFailed("Allocating %z bytes of secure memory failed with %Rrc\n", cbAlloc, rc); } static void doMemRealloc(RTTEST hTest) { RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "%u reallocation, grow by 1 bytes\n", PAGE_SIZE * 2); size_t cbAlloc = RTRandS32Ex(1, _16K); void *pvBuf = NULL; RTTESTI_CHECK_RC_OK_RETV(RTMemSaferAllocZEx(&pvBuf, cbAlloc, 0)); for (uint32_t i = 0; i <= PAGE_SIZE * 2; i++) { cbAlloc += 1; RTTESTI_CHECK_RC_OK_RETV(RTMemSaferReallocZEx(cbAlloc - 1, pvBuf, cbAlloc, &pvBuf, 0)); memset(pvBuf, i & 0x7f, cbAlloc); } RTMemSaferFree(pvBuf, cbAlloc); RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "100 random reallocations\n"); uint8_t chFiller = 0x42; cbAlloc = 0; pvBuf = NULL; for (uint32_t i = 1; i <= 100; i++) { uint32_t cbNew = RTRandS32Ex(1, _16K + (i / 4) * _16K); RTTESTI_CHECK_RC_OK_RETV(RTMemSaferReallocZEx(cbAlloc, pvBuf, cbNew, &pvBuf, 0)); RTTESTI_CHECK(ASMMemIsAllU8(pvBuf, RT_MIN(cbAlloc, cbNew), chFiller)); chFiller += 0x31; memset(pvBuf, chFiller, cbNew); cbAlloc = cbNew; } RTTESTI_CHECK_RC_OK_RETV(RTMemSaferReallocZEx(cbAlloc, pvBuf, 0, &pvBuf, 0)); RTTESTI_CHECK(pvBuf == NULL); } int main() { RTTEST hTest; RTEXITCODE rcExit = RTTestInitAndCreate("tstRTMemSafer", &hTest); if (rcExit != RTEXITCODE_SUCCESS) return rcExit; RTTestBanner(hTest); #if defined(VBOX) && (defined(RT_ARCH_X86) || defined(RT_ARCH_AMD64)) SUPR3Init(NULL); #endif /* * Not using sub-tests here, just printing progress. */ RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "20 random allocations\n"); for (uint32_t i = 0; i < 20; i++) doMemSaferAllocation(hTest); doMemRealloc(hTest); return RTTestSummaryAndDestroy(hTest); }