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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include <array>
#include <cstdint>
#include "mongo/base/secure_allocator.h"
#include "mongo/unittest/assert.h"
#include "mongo/unittest/framework.h"
#include "mongo/util/processinfo.h"
namespace mongo {
TEST(SecureAllocator, SecureVector) {
SecureAllocatorDefaultDomain::SecureVector<int> vec;
vec->push_back(1);
vec->push_back(2);
ASSERT_EQUALS(1, (*vec)[0]);
ASSERT_EQUALS(2, (*vec)[1]);
vec->resize(2000, 3);
ASSERT_EQUALS(3, (*vec)[2]);
}
TEST(SecureAllocator, SecureString) {
SecureAllocatorDefaultDomain::SecureString str;
str->resize(2000, 'x');
ASSERT_EQUALS(0, str->compare(*SecureAllocatorDefaultDomain::SecureString(2000, 'x')));
SecureAllocatorDefaultDomain::SecureString str2(str);
ASSERT_NOT_EQUALS(&*str, &*str2);
str2 = str;
ASSERT_NOT_EQUALS(&*str, &*str2);
auto strPtr = &*str;
auto str2Ptr = &*str2;
SecureAllocatorDefaultDomain::SecureString str3(std::move(str));
ASSERT_EQUALS(strPtr, &*str3);
str3 = std::move(str2);
ASSERT_EQUALS(str2Ptr, &*str3);
}
TEST(SecureAllocator, SecureArray) {
SecureAllocatorDefaultDomain::SecureArray<uint8_t, 100> array1;
SecureArray<uint8_t, 100> array2;
(*array1)[0] = 1;
(*array2)[0] = 1;
ASSERT_EQUALS(100, array1->size());
ASSERT_EQUALS(100, array2->size());
ASSERT_NOT_EQUALS(array1->data(), array2->data());
ASSERT_EQUALS(*array1->data(), *array2->data());
}
// Verify that we can make a good number of secure objects. Under the initial secure allocator
// design (page per object), you couldn't make more than 8-50 objects before running out of lockable
// pages.
TEST(SecureAllocator, ManySecureBytes) {
std::array<SecureAllocatorDefaultDomain::SecureHandle<char>, 4096> chars;
std::vector<SecureAllocatorDefaultDomain::SecureHandle<char>> e_chars(4096, 'e');
}
TEST(SecureAllocator, NonDefaultConstructibleWorks) {
struct Foo {
Foo(int) {}
Foo() = delete;
};
SecureAllocatorDefaultDomain::SecureHandle<Foo> foo(10);
}
TEST(SecureAllocator, allocatorCanBeDisabled) {
static size_t pegInvokationCountLast;
static size_t pegInvokationCount;
pegInvokationCountLast = 0;
pegInvokationCount = 0;
struct UnsecureAllocatorTrait {
static bool peg() {
pegInvokationCount++;
return false;
}
};
using UnsecureAllocatorDomain = SecureAllocatorDomain<UnsecureAllocatorTrait>;
{
std::vector<UnsecureAllocatorDomain::SecureHandle<char>> more_e_chars(4096, 'e');
ASSERT_GT(pegInvokationCount, pegInvokationCountLast);
pegInvokationCountLast = pegInvokationCount;
UnsecureAllocatorDomain::SecureString str;
ASSERT_GT(pegInvokationCount, pegInvokationCountLast);
pegInvokationCountLast = pegInvokationCount;
str->resize(2000, 'x');
ASSERT_GT(pegInvokationCount, pegInvokationCountLast);
pegInvokationCountLast = pegInvokationCount;
ASSERT_EQUALS(0, str->compare(*UnsecureAllocatorDomain::SecureString(2000, 'x')));
ASSERT_GT(pegInvokationCount, pegInvokationCountLast);
pegInvokationCountLast = pegInvokationCount;
}
ASSERT_GT(pegInvokationCount, pegInvokationCountLast);
}
/**
* This class tests the secure allocation by the following steps:
* Allocating first half a page and checking the correctness of the paged byte accocation count and
* byte allocation count. Allocating another half a page and checking the correctness of allocation
* byte counts. Deallocating all allocations and checking the correcness of allocation byte counts.
*/
TEST(SecureAllocator, secureAllocBytesCount) {
ProcessInfo p;
auto pageSize = p.getPageSize();
using namespace mongo::secure_allocator_details;
// The following allocation is to align the remaining test allocations to the start of a page.
void* ptr0 = allocate(pageSize, alignof(uint8_t));
uint32_t initAllocCnt = gSecureAllocCountInfo().getSecureAllocByteCount();
uint32_t allocCnt = initAllocCnt;
uint32_t expectedPageBytesCnt, pageBytesCnt;
uint32_t initPageBytesCnt = gSecureAllocCountInfo().getSecureAllocBytesInPages();
ASSERT_EQUALS(initAllocCnt, pageSize);
pageBytesCnt = initPageBytesCnt;
// The first allocation: allocating half a page.
auto halfPageSize = pageSize / 2;
void* ptr1 = allocate(halfPageSize, alignof(uint8_t));
// pageBytesCnt is the current count in paged byte allocation.
// If we have sufficient bytes for the current allocation, we do not need to allocate more
// pages. If we do not have enough bytes, we should allocate a new page.
expectedPageBytesCnt = initPageBytesCnt + pageSize;
// Checking the correctness of the paged byte accocation count and byte allocation count.
pageBytesCnt = gSecureAllocCountInfo().getSecureAllocBytesInPages();
allocCnt = gSecureAllocCountInfo().getSecureAllocByteCount();
ASSERT_EQUALS(halfPageSize + initAllocCnt, allocCnt);
ASSERT_EQUALS(expectedPageBytesCnt, gSecureAllocCountInfo().getSecureAllocBytesInPages());
// The second allocation: allocating half a page.
void* ptr2 = allocate(halfPageSize, alignof(uint8_t));
// Checking the correctness of the byte counts after the second allocation.
ASSERT_EQUALS(pageSize + initAllocCnt, gSecureAllocCountInfo().getSecureAllocByteCount());
ASSERT_EQUALS(expectedPageBytesCnt, gSecureAllocCountInfo().getSecureAllocBytesInPages());
deallocate(ptr1, halfPageSize);
deallocate(ptr2, halfPageSize);
// Checking the correctness of byte counts after the deallocations.
ASSERT_EQUALS(initAllocCnt, gSecureAllocCountInfo().getSecureAllocByteCount());
deallocate(ptr0, pageSize);
}
} // namespace mongo
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