// Copyright 2014 The Crashpad Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "util/mac/checked_mach_address_range.h"
#include <mach/mach.h>
#include <sys/types.h>
#include <iterator>
#include <limits>
#include "base/strings/stringprintf.h"
#include "build/build_config.h"
#include "gtest/gtest.h"
namespace crashpad {
namespace test {
namespace {
enum Validity {
kInvalid = false,
kValid,
kValid64Invalid32,
};
bool ExpectationForValidity32(Validity validity) {
return validity == kValid;
}
bool ExpectationForValidity64(Validity validity) {
return validity == kValid || validity == kValid64Invalid32;
}
TEST(CheckedMachAddressRange, IsValid) {
static constexpr struct {
mach_vm_address_t base;
mach_vm_size_t size;
Validity validity;
} kTestData[] = {
{0, 0, kValid},
{0, 1, kValid},
{0, 2, kValid},
{0, 0x7fffffff, kValid},
{0, 0x80000000, kValid},
{0, 0xfffffffe, kValid},
{0, 0xffffffff, kValid},
{0, 0xffffffffffffffff, kValid64Invalid32},
{1, 0, kValid},
{1, 1, kValid},
{1, 2, kValid},
{1, 0x7fffffff, kValid},
{1, 0x80000000, kValid},
{1, 0xfffffffe, kValid},
{1, 0xffffffff, kValid64Invalid32},
{1, 0xfffffffffffffffe, kValid64Invalid32},
{1, 0xffffffffffffffff, kInvalid},
{0x7fffffff, 0, kValid},
{0x7fffffff, 1, kValid},
{0x7fffffff, 2, kValid},
{0x7fffffff, 0x7fffffff, kValid},
{0x7fffffff, 0x80000000, kValid},
{0x7fffffff, 0xfffffffe, kValid64Invalid32},
{0x7fffffff, 0xffffffff, kValid64Invalid32},
{0x80000000, 0, kValid},
{0x80000000, 1, kValid},
{0x80000000, 2, kValid},
{0x80000000, 0x7fffffff, kValid},
{0x80000000, 0x80000000, kValid64Invalid32},
{0x80000000, 0xfffffffe, kValid64Invalid32},
{0x80000000, 0xffffffff, kValid64Invalid32},
{0xfffffffe, 0, kValid},
{0xfffffffe, 1, kValid},
{0xfffffffe, 2, kValid64Invalid32},
{0xfffffffe, 0x7fffffff, kValid64Invalid32},
{0xfffffffe, 0x80000000, kValid64Invalid32},
{0xfffffffe, 0xfffffffe, kValid64Invalid32},
{0xfffffffe, 0xffffffff, kValid64Invalid32},
{0xffffffff, 0, kValid},
{0xffffffff, 1, kValid64Invalid32},
{0xffffffff, 2, kValid64Invalid32},
{0xffffffff, 0x7fffffff, kValid64Invalid32},
{0xffffffff, 0x80000000, kValid64Invalid32},
{0xffffffff, 0xfffffffe, kValid64Invalid32},
{0xffffffff, 0xffffffff, kValid64Invalid32},
{0x7fffffffffffffff, 0, kValid64Invalid32},
{0x7fffffffffffffff, 1, kValid64Invalid32},
{0x7fffffffffffffff, 2, kValid64Invalid32},
{0x7fffffffffffffff, 0x7fffffffffffffff, kValid64Invalid32},
{0x7fffffffffffffff, 0x8000000000000000, kValid64Invalid32},
{0x7fffffffffffffff, 0x8000000000000001, kInvalid},
{0x7fffffffffffffff, 0xfffffffffffffffe, kInvalid},
{0x7fffffffffffffff, 0xffffffffffffffff, kInvalid},
{0x8000000000000000, 0, kValid64Invalid32},
{0x8000000000000000, 1, kValid64Invalid32},
{0x8000000000000000, 2, kValid64Invalid32},
{0x8000000000000000, 0x7fffffffffffffff, kValid64Invalid32},
{0x8000000000000000, 0x8000000000000000, kInvalid},
{0x8000000000000000, 0x8000000000000001, kInvalid},
{0x8000000000000000, 0xfffffffffffffffe, kInvalid},
{0x8000000000000000, 0xffffffffffffffff, kInvalid},
{0xfffffffffffffffe, 0, kValid64Invalid32},
{0xfffffffffffffffe, 1, kValid64Invalid32},
{0xfffffffffffffffe, 2, kInvalid},
{0xffffffffffffffff, 0, kValid64Invalid32},
{0xffffffffffffffff, 1, kInvalid},
};
for (size_t index = 0; index < std::size(kTestData); ++index) {
const auto& testcase = kTestData[index];
SCOPED_TRACE(base::StringPrintf("index %zu, base 0x%llx, size 0x%llx",
index,
testcase.base,
testcase.size));
CheckedMachAddressRange range_32(false, testcase.base, testcase.size);
EXPECT_EQ(range_32.IsValid(), ExpectationForValidity32(testcase.validity));
CheckedMachAddressRange range_64(true, testcase.base, testcase.size);
EXPECT_EQ(range_64.IsValid(), ExpectationForValidity64(testcase.validity));
}
}
TEST(CheckedMachAddressRange, ContainsValue) {
static constexpr struct {
mach_vm_address_t value;
bool expectation;
} kTestData[] = {
{0, false},
{1, false},
{0x1fff, false},
{0x2000, true},
{0x2001, true},
{0x2ffe, true},
{0x2fff, true},
{0x3000, false},
{0x3001, false},
{0x7fffffff, false},
{0x80000000, false},
{0x80000001, false},
{0x80001fff, false},
{0x80002000, false},
{0x80002001, false},
{0x80002ffe, false},
{0x80002fff, false},
{0x80003000, false},
{0x80003001, false},
{0xffffcfff, false},
{0xffffdfff, false},
{0xffffefff, false},
{0xffffffff, false},
{0x100000000, false},
{0xffffffffffffffff, false},
};
CheckedMachAddressRange parent_range_32(false, 0x2000, 0x1000);
ASSERT_TRUE(parent_range_32.IsValid());
for (size_t index = 0; index < std::size(kTestData); ++index) {
const auto& testcase = kTestData[index];
SCOPED_TRACE(
base::StringPrintf("index %zu, value 0x%llx", index, testcase.value));
EXPECT_EQ(parent_range_32.ContainsValue(testcase.value),
testcase.expectation);
}
CheckedMachAddressRange parent_range_64(true, 0x100000000, 0x1000);
ASSERT_TRUE(parent_range_64.IsValid());
EXPECT_FALSE(parent_range_64.ContainsValue(0xffffffff));
EXPECT_TRUE(parent_range_64.ContainsValue(0x100000000));
EXPECT_TRUE(parent_range_64.ContainsValue(0x100000001));
EXPECT_TRUE(parent_range_64.ContainsValue(0x100000fff));
EXPECT_FALSE(parent_range_64.ContainsValue(0x100001000));
}
TEST(CheckedMachAddressRange, ContainsRange) {
static constexpr struct {
mach_vm_address_t base;
mach_vm_size_t size;
bool expectation;
} kTestData[] = {
{0, 0, false},
{0, 1, false},
{0x2000, 0x1000, true},
{0, 0x2000, false},
{0x3000, 0x1000, false},
{0x1800, 0x1000, false},
{0x2800, 0x1000, false},
{0x2000, 0x800, true},
{0x2800, 0x800, true},
{0x2400, 0x800, true},
{0x2800, 0, true},
{0x2000, 0xffffdfff, false},
{0x2800, 0xffffd7ff, false},
{0x3000, 0xffffcfff, false},
{0xfffffffe, 1, false},
{0xffffffff, 0, false},
{0x1fff, 0, false},
{0x2000, 0, true},
{0x2001, 0, true},
{0x2fff, 0, true},
{0x3000, 0, true},
{0x3001, 0, false},
{0x1fff, 1, false},
{0x2000, 1, true},
{0x2001, 1, true},
{0x2fff, 1, true},
{0x3000, 1, false},
{0x3001, 1, false},
};
CheckedMachAddressRange parent_range_32(false, 0x2000, 0x1000);
ASSERT_TRUE(parent_range_32.IsValid());
for (size_t index = 0; index < std::size(kTestData); ++index) {
const auto& testcase = kTestData[index];
SCOPED_TRACE(base::StringPrintf("index %zu, base 0x%llx, size 0x%llx",
index,
testcase.base,
testcase.size));
CheckedMachAddressRange child_range_32(false, testcase.base, testcase.size);
ASSERT_TRUE(child_range_32.IsValid());
EXPECT_EQ(parent_range_32.ContainsRange(child_range_32),
testcase.expectation);
}
CheckedMachAddressRange parent_range_64(true, 0x100000000, 0x1000);
ASSERT_TRUE(parent_range_64.IsValid());
CheckedMachAddressRange child_range_64(true, 0xffffffff, 2);
EXPECT_FALSE(parent_range_64.ContainsRange(child_range_64));
child_range_64.SetRange(true, 0x100000000, 2);
EXPECT_TRUE(parent_range_64.ContainsRange(child_range_64));
child_range_64.SetRange(true, 0x100000ffe, 2);
EXPECT_TRUE(parent_range_64.ContainsRange(child_range_64));
child_range_64.SetRange(true, 0x100000fff, 2);
EXPECT_FALSE(parent_range_64.ContainsRange(child_range_64));
}
} // namespace
} // namespace test
} // namespace crashpad
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