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/*
* Copyright (C) 2018 The Android Open Source Project
*
* 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 <malloc.h>
#include <stdint.h>
#include <sys/types.h>
#include <unistd.h>
#include <unordered_map>
#include <android-base/file.h>
#include <gtest/gtest.h>
#include <unwindstack/MapInfo.h>
#include <unwindstack/Memory.h>
#include "DexFile.h"
#include "DexFileData.h"
#include "MemoryFake.h"
namespace unwindstack {
TEST(DexFileTest, from_file_open_non_exist) {
EXPECT_TRUE(DexFileFromFile::Create(0, "/file/does/not/exist") == nullptr);
}
TEST(DexFileTest, from_file_open_too_small) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_EQ(size_t{10}, static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, 10))));
// Header too small.
EXPECT_TRUE(DexFileFromFile::Create(0, tf.path) == nullptr);
// Header correct, file too small.
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
ASSERT_EQ(sizeof(kDexData) - 1,
static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData) - 1))));
EXPECT_TRUE(DexFileFromFile::Create(0, tf.path) == nullptr);
}
TEST(DexFileTest, from_file_open) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_EQ(sizeof(kDexData),
static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
EXPECT_TRUE(DexFileFromFile::Create(0, tf.path) != nullptr);
}
TEST(DexFileTest, from_file_open_non_zero_offset) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_EQ(0x100, lseek(tf.fd, 0x100, SEEK_SET));
ASSERT_EQ(sizeof(kDexData),
static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
EXPECT_TRUE(DexFileFromFile::Create(0x100, tf.path) != nullptr);
}
static constexpr size_t kNumLeakLoops = 5000;
static constexpr size_t kMaxAllowedLeakBytes = 1024;
static void CheckForLeak(size_t loop, size_t* first_allocated_bytes, size_t* last_allocated_bytes) {
size_t allocated_bytes = mallinfo().uordblks;
if (*first_allocated_bytes == 0) {
*first_allocated_bytes = allocated_bytes;
} else if (*last_allocated_bytes > *first_allocated_bytes) {
// Check that the total memory did not increase too much over the first loop.
ASSERT_LE(*last_allocated_bytes - *first_allocated_bytes, kMaxAllowedLeakBytes)
<< "Failed in loop " << loop << " first_allocated_bytes " << *first_allocated_bytes
<< " last_allocated_bytes " << *last_allocated_bytes;
}
*last_allocated_bytes = allocated_bytes;
}
TEST(DexFileTest, from_file_no_leak) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_EQ(sizeof(kDexData),
static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
size_t first_allocated_bytes = 0;
size_t last_allocated_bytes = 0;
for (size_t i = 0; i < kNumLeakLoops; i++) {
EXPECT_TRUE(DexFileFromFile::Create(0, tf.path) != nullptr);
ASSERT_NO_FATAL_FAILURE(CheckForLeak(i, &first_allocated_bytes, &last_allocated_bytes));
}
}
TEST(DexFileTest, from_memory_fail_too_small_for_header) {
MemoryFake memory;
memory.SetMemory(0x1000, kDexData, 10);
EXPECT_TRUE(DexFileFromMemory::Create(0x1000, &memory, "") == nullptr);
}
TEST(DexFileTest, from_memory_fail_too_small_for_data) {
MemoryFake memory;
memory.SetMemory(0x1000, kDexData, sizeof(kDexData) - 2);
EXPECT_TRUE(DexFileFromMemory::Create(0x1000, &memory, "") == nullptr);
}
TEST(DexFileTest, from_memory_open) {
MemoryFake memory;
memory.SetMemory(0x1000, kDexData, sizeof(kDexData));
EXPECT_TRUE(DexFileFromMemory::Create(0x1000, &memory, "") != nullptr);
}
TEST(DexFileTest, from_memory_no_leak) {
MemoryFake memory;
memory.SetMemory(0x1000, kDexData, sizeof(kDexData));
size_t first_allocated_bytes = 0;
size_t last_allocated_bytes = 0;
for (size_t i = 0; i < kNumLeakLoops; i++) {
EXPECT_TRUE(DexFileFromMemory::Create(0x1000, &memory, "") != nullptr);
ASSERT_NO_FATAL_FAILURE(CheckForLeak(i, &first_allocated_bytes, &last_allocated_bytes));
}
}
TEST(DexFileTest, create_using_file) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_EQ(0x500, lseek(tf.fd, 0x500, SEEK_SET));
ASSERT_EQ(sizeof(kDexData),
static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
MemoryFake memory;
MapInfo info(nullptr, nullptr, 0, 0x10000, 0, 0x5, tf.path);
EXPECT_TRUE(DexFile::Create(0x500, &memory, &info) != nullptr);
}
TEST(DexFileTest, create_using_file_non_zero_start) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_EQ(0x500, lseek(tf.fd, 0x500, SEEK_SET));
ASSERT_EQ(sizeof(kDexData),
static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
MemoryFake memory;
MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0, 0x5, tf.path);
EXPECT_TRUE(DexFile::Create(0x600, &memory, &info) != nullptr);
}
TEST(DexFileTest, create_using_file_non_zero_offset) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_EQ(0x500, lseek(tf.fd, 0x500, SEEK_SET));
ASSERT_EQ(sizeof(kDexData),
static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
MemoryFake memory;
MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0x200, 0x5, tf.path);
EXPECT_TRUE(DexFile::Create(0x400, &memory, &info) != nullptr);
}
TEST(DexFileTest, create_using_memory_empty_file) {
MemoryFake memory;
memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0x200, 0x5, "");
EXPECT_TRUE(DexFile::Create(0x4000, &memory, &info) != nullptr);
}
TEST(DexFileTest, create_using_memory_file_does_not_exist) {
MemoryFake memory;
memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0x200, 0x5, "/does/not/exist");
EXPECT_TRUE(DexFile::Create(0x4000, &memory, &info) != nullptr);
}
TEST(DexFileTest, create_using_memory_file_is_malformed) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_EQ(sizeof(kDexData) - 10,
static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData) - 10))));
MemoryFake memory;
memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
MapInfo info(nullptr, nullptr, 0x4000, 0x10000, 0x200, 0x5, "/does/not/exist");
std::unique_ptr<DexFile> dex_file = DexFile::Create(0x4000, &memory, &info);
ASSERT_TRUE(dex_file != nullptr);
// Check it came from memory by clearing memory and verifying it fails.
memory.Clear();
dex_file = DexFile::Create(0x4000, &memory, &info);
EXPECT_TRUE(dex_file == nullptr);
}
TEST(DexFileTest, get_method) {
MemoryFake memory;
memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0x200, 0x5, "");
std::unique_ptr<DexFile> dex_file(DexFile::Create(0x4000, &memory, &info));
ASSERT_TRUE(dex_file != nullptr);
std::string method;
uint64_t method_offset;
ASSERT_TRUE(dex_file->GetMethodInformation(0x102, &method, &method_offset));
EXPECT_EQ("Main.<init>", method);
EXPECT_EQ(2U, method_offset);
ASSERT_TRUE(dex_file->GetMethodInformation(0x118, &method, &method_offset));
EXPECT_EQ("Main.main", method);
EXPECT_EQ(0U, method_offset);
}
TEST(DexFileTest, get_method_empty) {
MemoryFake memory;
memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
MapInfo info(nullptr, nullptr, 0x100, 0x10000, 0x200, 0x5, "");
std::unique_ptr<DexFile> dex_file(DexFile::Create(0x4000, &memory, &info));
ASSERT_TRUE(dex_file != nullptr);
std::string method;
uint64_t method_offset;
EXPECT_FALSE(dex_file->GetMethodInformation(0x100000, &method, &method_offset));
EXPECT_FALSE(dex_file->GetMethodInformation(0x98, &method, &method_offset));
}
} // namespace unwindstack
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