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69 lines
2.5 KiB
C++
69 lines
2.5 KiB
C++
// Copyright (c) 2017-2023, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "gtest/gtest.h"
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#include <stdint.h>
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#include "misc_log_ex.h"
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#include "memwipe.h"
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#include "warnings.h"
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// Probably won't catch the optimized out case, but at least we test
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// it works in the normal case
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static void test(bool wipe)
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{
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char *foo = (char*)malloc(4);
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ASSERT_TRUE(foo != NULL);
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intptr_t foop = (intptr_t)foo;
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strcpy(foo, "bar");
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void *bar = wipe ? memwipe(foo, 3) : memset(foo, 0, 3);
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ASSERT_EQ(foo, bar);
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free(foo);
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char *quux = (char*)malloc(4); // same size, just after free, so we're likely to get the same, depending on the allocator
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PUSH_WARNINGS
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DISABLE_GCC_WARNING(maybe-uninitialized)
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if ((intptr_t)quux == foop)
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{
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MDEBUG(std::hex << std::setw(8) << std::setfill('0') << *(uint32_t*)quux);
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if (wipe) { ASSERT_TRUE(memcmp(quux, "bar", 3)); }
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}
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else MWARNING("We did not get the same location, cannot check");
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POP_WARNINGS
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free(quux);
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}
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TEST(memwipe, control)
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{
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test(false);
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}
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TEST(memwipe, works)
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{
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test(true);
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}
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