diff options
Diffstat (limited to 'src/VBox/Runtime/testcase/tstRTMemSafer.cpp')
-rw-r--r-- | src/VBox/Runtime/testcase/tstRTMemSafer.cpp | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/src/VBox/Runtime/testcase/tstRTMemSafer.cpp b/src/VBox/Runtime/testcase/tstRTMemSafer.cpp new file mode 100644 index 00000000..c50336c0 --- /dev/null +++ b/src/VBox/Runtime/testcase/tstRTMemSafer.cpp @@ -0,0 +1,176 @@ +/* $Id: tstRTMemSafer.cpp $ */ +/** @file + * IPRT Testcase - RTMemSafer* functions. + */ + +/* + * Copyright (C) 2012-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox 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. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <iprt/memsafer.h> + +#include <iprt/asm.h> +#include <iprt/param.h> +#include <iprt/rand.h> +#include <iprt/string.h> +#include <iprt/test.h> +#if defined(VBOX) && (defined(RT_ARCH_X86) || defined(RT_ARCH_AMD64)) +# include <VBox/sup.h> +#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); +} + |