sandbox/win/src/handle_inheritance_test.cc

   1 // Copyright (c) 2012 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 <stdio.h>
   6
   7 #include "base/files/file_util.h"
   8 #include "base/files/scoped_temp_dir.h"
   9 #include "base/memory/shared_memory.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "base/win/scoped_handle.h"
  13 #include "base/win/windows_version.h"
  14 #include "sandbox/win/tests/common/controller.h"
  15 #include "testing/gtest/include/gtest/gtest.h"
  16
  17 namespace sandbox {
  18
  19 SBOX_TESTS_COMMAND int HandleInheritanceTests_PrintToStdout(int argc,
  20                                                             wchar_t** argv) {
  21   printf("Example output to stdout\n");
  22   return SBOX_TEST_SUCCEEDED;
  23 }
  24
  25 TEST(HandleInheritanceTests, TestStdoutInheritance) {
  26   base::ScopedTempDir temp_directory;
  27   base::FilePath temp_file_name;
  28   ASSERT_TRUE(temp_directory.CreateUniqueTempDir());
  29   ASSERT_TRUE(CreateTemporaryFileInDir(temp_directory.path(), &temp_file_name));
  30
  31   SECURITY_ATTRIBUTES attrs = {};
  32   attrs.nLength = sizeof(attrs);
  33   attrs.bInheritHandle = TRUE;
  34   base::win::ScopedHandle tmp_handle(
  35       CreateFile(temp_file_name.value().c_str(), GENERIC_WRITE,
  36                  FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE,
  37                  &attrs, OPEN_EXISTING, 0, NULL));
  38   ASSERT_TRUE(tmp_handle.IsValid());
  39
  40   TestRunner runner;
  41   ASSERT_EQ(SBOX_ALL_OK, runner.GetPolicy()->SetStdoutHandle(tmp_handle.Get()));
  42   int result = runner.RunTest(L"HandleInheritanceTests_PrintToStdout");
  43   ASSERT_EQ(SBOX_TEST_SUCCEEDED, result);
  44
  45   std::string data;
  46   ASSERT_TRUE(base::ReadFileToString(base::FilePath(temp_file_name), &data));
  47   // Redirection uses a feature that was added in Windows Vista.
  48   if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
  49     ASSERT_EQ("Example output to stdout\r\n", data);
  50   } else {
  51     ASSERT_EQ("", data);
  52   }
  53 }
  54
  55 SBOX_TESTS_COMMAND int
  56 HandleInheritanceTests_ValidInheritedHandle(int argc, wchar_t **argv) {
  57   if (argc != 1)
  58     return SBOX_TEST_FAILED_TO_RUN_TEST;
  59   base::SharedMemoryHandle handle = nullptr;
  60   base::StringToUint(argv[0], reinterpret_cast<unsigned int *>(&handle));
  61
  62   // This handle we inherited must be both valid and closeable.
  63   DWORD flags = 0;
  64   if (!GetHandleInformation(handle, &flags))
  65     return SBOX_TEST_FAILED;
  66   if ((flags & HANDLE_FLAG_PROTECT_FROM_CLOSE) != 0)
  67     return SBOX_TEST_FAILED;
  68
  69   return SBOX_TEST_SUCCEEDED;
  70 }
  71
  72 TEST(HandleInheritanceTests, InheritByValue) {
  73   // Handle inheritance doesn't work on XP.
  74   if (base::win::GetVersion() < base::win::VERSION_VISTA)
  75     return;
  76
  77   base::SharedMemory test_shared_memory;
  78   ASSERT_TRUE(test_shared_memory.CreateAnonymous(1000));
  79   ASSERT_TRUE(test_shared_memory.Map(0));
  80
  81   TestRunner runner;
  82   void *shared_handle =
  83       runner.GetPolicy()->AddHandleToShare(test_shared_memory.handle());
  84
  85   std::string command_line =
  86       "HandleInheritanceTests_ValidInheritedHandle " +
  87       base::UintToString(reinterpret_cast<unsigned int>(shared_handle));
  88   int result = runner.RunTest(base::UTF8ToUTF16(command_line).c_str());
  89   ASSERT_EQ(SBOX_TEST_SUCCEEDED, result);
  90 }
  91
  92 }  // namespace sandbox