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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file contains unit tests for PEImage.
#include "base/win/pe_image.h"
#include <algorithm>
#include "base/files/file_path.h"
#include "base/path_service.h"
#include "base/scoped_native_library.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace win {
namespace {
// Just counts the number of invocations.
bool ImportsCallback(const PEImage& image,
LPCSTR module,
DWORD ordinal,
LPCSTR name,
DWORD hint,
PIMAGE_THUNK_DATA iat,
PVOID cookie) {
int* count = reinterpret_cast<int*>(cookie);
(*count)++;
return true;
}
// Just counts the number of invocations.
bool SectionsCallback(const PEImage& image,
PIMAGE_SECTION_HEADER header,
PVOID section_start,
DWORD section_size,
PVOID cookie) {
int* count = reinterpret_cast<int*>(cookie);
(*count)++;
return true;
}
// Just counts the number of invocations.
bool RelocsCallback(const PEImage& image,
WORD type,
PVOID address,
PVOID cookie) {
int* count = reinterpret_cast<int*>(cookie);
(*count)++;
return true;
}
// Just counts the number of invocations.
bool ImportChunksCallback(const PEImage& image,
LPCSTR module,
PIMAGE_THUNK_DATA name_table,
PIMAGE_THUNK_DATA iat,
PVOID cookie) {
int* count = reinterpret_cast<int*>(cookie);
(*count)++;
return true;
}
// Just counts the number of invocations.
bool DelayImportChunksCallback(const PEImage& image,
PImgDelayDescr delay_descriptor,
LPCSTR module,
PIMAGE_THUNK_DATA name_table,
PIMAGE_THUNK_DATA iat,
PVOID cookie) {
int* count = reinterpret_cast<int*>(cookie);
(*count)++;
return true;
}
// Just counts the number of invocations.
bool ExportsCallback(const PEImage& image,
DWORD ordinal,
DWORD hint,
LPCSTR name,
PVOID function,
LPCSTR forward,
PVOID cookie) {
int* count = reinterpret_cast<int*>(cookie);
(*count)++;
return true;
}
base::FilePath GetPEImageTestPath() {
base::FilePath pe_image_test_path;
EXPECT_TRUE(PathService::Get(DIR_TEST_DATA, &pe_image_test_path));
pe_image_test_path = pe_image_test_path.Append(FILE_PATH_LITERAL("pe_image"));
#if defined(ARCH_CPU_ARM64)
pe_image_test_path =
pe_image_test_path.Append(FILE_PATH_LITERAL("pe_image_test_arm64.dll"));
#elif defined(ARCH_CPU_X86_64)
pe_image_test_path =
pe_image_test_path.Append(FILE_PATH_LITERAL("pe_image_test_64.dll"));
#elif defined(ARCH_CPU_X86)
pe_image_test_path =
pe_image_test_path.Append(FILE_PATH_LITERAL("pe_image_test_32.dll"));
#else
#error This platform is not supported.
#endif
return pe_image_test_path;
}
} // namespace
// Tests that we are able to enumerate stuff from a PE file, and that
// the actual number of items found matches an expected value.
TEST(PEImageTest, EnumeratesPE) {
base::FilePath pe_image_test_path = GetPEImageTestPath();
#if defined(ARCH_CPU_ARM64)
const int kSections = 7;
const int kImportsDlls = 3;
const int kDelayDlls = 2;
const int kExports = 3;
const int kImports = 72;
const int kDelayImports = 2;
const int kRelocs = 740;
#elif defined(ARCH_CPU_64_BITS)
const int kSections = 6;
const int kImportsDlls = 2;
const int kDelayDlls = 2;
const int kExports = 3;
const int kImports = 70;
const int kDelayImports = 2;
const int kRelocs = 976;
#else
const int kSections = 5;
const int kImportsDlls = 2;
const int kDelayDlls = 2;
const int kExports = 3;
const int kImports = 66;
const int kDelayImports = 2;
const int kRelocs = 2114;
#endif
ScopedNativeLibrary module(pe_image_test_path);
ASSERT_TRUE(module.is_valid());
PEImage pe(module.get());
int count = 0;
EXPECT_TRUE(pe.VerifyMagic());
pe.EnumSections(SectionsCallback, &count);
EXPECT_EQ(kSections, count);
count = 0;
pe.EnumImportChunks(ImportChunksCallback, &count, nullptr);
EXPECT_EQ(kImportsDlls, count);
count = 0;
pe.EnumDelayImportChunks(DelayImportChunksCallback, &count, nullptr);
EXPECT_EQ(kDelayDlls, count);
count = 0;
pe.EnumExports(ExportsCallback, &count);
EXPECT_EQ(kExports, count);
count = 0;
pe.EnumAllImports(ImportsCallback, &count, nullptr);
EXPECT_EQ(kImports, count);
count = 0;
pe.EnumAllDelayImports(ImportsCallback, &count, nullptr);
EXPECT_EQ(kDelayImports, count);
count = 0;
pe.EnumRelocs(RelocsCallback, &count);
EXPECT_EQ(kRelocs, count);
}
// Tests that we are able to enumerate stuff from a PE file, and that
// the actual number of items found matches an expected value.
TEST(PEImageTest, EnumeratesPEWithTargetModule) {
base::FilePath pe_image_test_path = GetPEImageTestPath();
const char kTargetModuleStatic[] = "user32.dll";
const char kTargetModuleDelay[] = "cfgmgr32.dll";
const int kImportsDlls = 1;
const int kDelayDlls = 1;
const int kExports = 3;
const int kImports = 2;
const int kDelayImports = 1;
#if defined(ARCH_CPU_ARM64)
const int kSections = 7;
const int kRelocs = 740;
#elif defined(ARCH_CPU_64_BITS)
const int kSections = 6;
const int kRelocs = 976;
#else
const int kSections = 5;
const int kRelocs = 2114;
#endif
ScopedNativeLibrary module(pe_image_test_path);
ASSERT_TRUE(module.is_valid());
PEImage pe(module.get());
int count = 0;
EXPECT_TRUE(pe.VerifyMagic());
pe.EnumSections(SectionsCallback, &count);
EXPECT_EQ(kSections, count);
count = 0;
pe.EnumImportChunks(ImportChunksCallback, &count, kTargetModuleStatic);
EXPECT_EQ(kImportsDlls, count);
count = 0;
pe.EnumDelayImportChunks(DelayImportChunksCallback, &count,
kTargetModuleDelay);
EXPECT_EQ(kDelayDlls, count);
count = 0;
pe.EnumExports(ExportsCallback, &count);
EXPECT_EQ(kExports, count);
count = 0;
pe.EnumAllImports(ImportsCallback, &count, kTargetModuleStatic);
EXPECT_EQ(kImports, count);
count = 0;
pe.EnumAllDelayImports(ImportsCallback, &count, kTargetModuleDelay);
EXPECT_EQ(kDelayImports, count);
count = 0;
pe.EnumRelocs(RelocsCallback, &count);
EXPECT_EQ(kRelocs, count);
}
// Tests that we can locate an specific exported symbol, by name and by ordinal.
TEST(PEImageTest, RetrievesExports) {
ScopedNativeLibrary module(FilePath(FILE_PATH_LITERAL("advapi32.dll")));
ASSERT_TRUE(module.is_valid());
PEImage pe(module.get());
WORD ordinal;
EXPECT_TRUE(pe.GetProcOrdinal("RegEnumKeyExW", &ordinal));
FARPROC address1 = pe.GetProcAddress("RegEnumKeyExW");
FARPROC address2 = pe.GetProcAddress(reinterpret_cast<char*>(ordinal));
EXPECT_TRUE(address1 != nullptr);
EXPECT_TRUE(address2 != nullptr);
EXPECT_TRUE(address1 == address2);
}
// Tests that we can locate a forwarded export.
TEST(PEImageTest, ForwardedExport) {
base::FilePath pe_image_test_path = GetPEImageTestPath();
ScopedNativeLibrary module(pe_image_test_path);
ASSERT_TRUE(module.is_valid());
PEImage pe(module.get());
FARPROC addr = pe.GetProcAddress("FwdExport");
EXPECT_EQ(FARPROC(-1), addr);
PDWORD export_entry = pe.GetExportEntry("FwdExport");
EXPECT_NE(nullptr, export_entry);
PVOID fwd_addr = pe.RVAToAddr(*export_entry);
const char expected_fwd[] = "KERNEL32.CreateFileA";
EXPECT_STREQ(expected_fwd, reinterpret_cast<char*>(fwd_addr));
}
// Test that we can get debug id out of a module.
TEST(PEImageTest, GetDebugId) {
static constexpr char kPdbFileName[] = "advapi32.pdb";
ScopedNativeLibrary module(FilePath(FILE_PATH_LITERAL("advapi32.dll")));
ASSERT_TRUE(module.is_valid());
PEImage pe(module.get());
GUID guid = {0};
DWORD age = 0;
LPCSTR pdb_file = nullptr;
size_t pdb_file_length = 0;
EXPECT_TRUE(pe.GetDebugId(&guid, &age, &pdb_file, &pdb_file_length));
EXPECT_EQ(pdb_file_length, strlen(kPdbFileName));
EXPECT_STREQ(pdb_file, kPdbFileName);
// Should be valid to call without parameters.
EXPECT_TRUE(pe.GetDebugId(nullptr, nullptr, nullptr, nullptr));
GUID empty_guid = {0};
EXPECT_TRUE(!IsEqualGUID(empty_guid, guid));
EXPECT_NE(0U, age);
}
} // namespace win
} // namespace base
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