1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include <stdint.h>
6#include <windows.h>
7
8#include <algorithm>
9#include <vector>
10
11#include "base/base_paths.h"
12#include "base/basictypes.h"
13#include "base/compiler_specific.h"
14#include "base/files/file_path.h"
15#include "base/files/memory_mapped_file.h"
16#include "base/path_service.h"
17#include "base/strings/string_util.h"
18#include "base/win/pe_image.h"
19#include "testing/gtest/include/gtest/gtest.h"
20
21namespace {
22
23class ELFImportsTest : public testing::Test {
24 protected:
25  static bool ImportsCallback(const base::win::PEImage &image,
26                              LPCSTR module,
27                              PIMAGE_THUNK_DATA name_table,
28                              PIMAGE_THUNK_DATA iat,
29                              PVOID cookie) {
30    std::vector<std::string>* import_list =
31        reinterpret_cast<std::vector<std::string>*>(cookie);
32    import_list->push_back(module);
33    return true;
34  }
35
36  void GetImports(const base::FilePath& module_path,
37                  std::vector<std::string>* imports) {
38    ASSERT_TRUE(imports != NULL);
39
40    base::MemoryMappedFile module_mmap;
41
42    ASSERT_TRUE(module_mmap.Initialize(module_path));
43    base::win::PEImageAsData pe_image_data(
44        reinterpret_cast<HMODULE>(const_cast<uint8*>(module_mmap.data())));
45    pe_image_data.EnumImportChunks(ELFImportsTest::ImportsCallback, imports);
46  }
47};
48
49TEST_F(ELFImportsTest, ChromeElfSanityCheck) {
50  std::vector<std::string> elf_imports;
51
52  base::FilePath dll;
53  ASSERT_TRUE(PathService::Get(base::DIR_EXE, &dll));
54  dll = dll.Append(L"chrome_elf.dll");
55  GetImports(dll, &elf_imports);
56
57  // Check that ELF has imports.
58  ASSERT_LT(0u, elf_imports.size()) << "Ensure the chrome_elf_unittests "
59    "target was built, instead of chrome_elf_unittests.exe";
60
61  std::vector<std::string>::iterator it(elf_imports.begin());
62
63  static const char* const kValidFilePatterns[] = {
64    "KERNEL32.dll",
65    "MSVC*",
66#if defined(SYZYASAN)
67    "syzyasan_rtl.dll",
68#endif
69    "ADVAPI32.dll"
70  };
71
72  // Make sure all of ELF's imports are in the valid imports list.
73  for (; it != elf_imports.end(); it++) {
74    bool match = false;
75    for (int i = 0; i < arraysize(kValidFilePatterns); ++i) {
76      if (MatchPattern(*it, kValidFilePatterns[i]))
77        match = true;
78    }
79    ASSERT_TRUE(match) << "Illegal import in chrome_elf.dll.";
80  }
81}
82
83TEST_F(ELFImportsTest, ChromeExeSanityCheck) {
84  std::vector<std::string> exe_imports;
85
86  base::FilePath exe;
87  ASSERT_TRUE(PathService::Get(base::DIR_EXE, &exe));
88  exe = exe.Append(L"chrome.exe");
89  GetImports(exe, &exe_imports);
90
91  // Check that chrome.exe has imports.
92  ASSERT_LT(0u, exe_imports.size()) << "Ensure the chrome_elf_unittests "
93    "target was built, instead of chrome_elf_unittests.exe";
94
95  // Chrome.exe's first import must be ELF.
96  EXPECT_EQ("chrome_elf.dll", exe_imports[0]) <<
97      "Illegal import order in chrome.exe (ensure the chrome_elf_unittest "
98      "target was built, instead of just chrome_elf_unittests.exe)";
99}
100
101}  // namespace
102