| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chrome/common/component_flash_hint_file_linux.h" |
| |
| #include <errno.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <sys/mount.h> |
| |
| #include "base/files/file_util.h" |
| #include "base/files/scoped_temp_dir.h" |
| #include "base/path_service.h" |
| #include "base/process/kill.h" |
| #include "base/test/multiprocess_test.h" |
| #include "base/test/scoped_path_override.h" |
| #include "base/test/test_timeouts.h" |
| #include "chrome/common/chrome_paths.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "testing/multiprocess_func_list.h" |
| |
| namespace chrome { |
| |
| class ComponentFlashHintFileTest : public base::MultiProcessTest {}; |
| |
| TEST_F(ComponentFlashHintFileTest, ExistsTest) { |
| const base::ScopedPathOverride path_override(chrome::DIR_USER_DATA); |
| EXPECT_FALSE(component_flash_hint_file::DoesHintFileExist()); |
| } |
| |
| TEST_F(ComponentFlashHintFileTest, InstallTest) { |
| const base::ScopedPathOverride path_override(chrome::DIR_USER_DATA); |
| EXPECT_FALSE(component_flash_hint_file::DoesHintFileExist()); |
| |
| base::FilePath flash_dir; |
| ASSERT_TRUE(base::PathService::Get( |
| chrome::DIR_COMPONENT_UPDATED_PEPPER_FLASH_PLUGIN, &flash_dir)); |
| |
| base::File::Error error; |
| ASSERT_TRUE(base::CreateDirectoryAndGetError(flash_dir, &error)); |
| |
| // Write out a fixed byte array as the flash file. |
| uint8_t file[] = {0x4c, 0x65, 0x74, 0x20, 0x75, 0x73, |
| 0x20, 0x6e, 0x6f, 0x74, 0x20, 0x67}; |
| flash_dir = flash_dir.Append("libflash.so"); |
| const std::string flash_version = "1.0.0.1"; |
| ASSERT_EQ(static_cast<int>(sizeof(file)), |
| base::WriteFile(flash_dir, reinterpret_cast<const char*>(file), |
| sizeof(file))); |
| ASSERT_TRUE(component_flash_hint_file::RecordFlashUpdate(flash_dir, flash_dir, |
| flash_version)); |
| ASSERT_TRUE(component_flash_hint_file::DoesHintFileExist()); |
| |
| // Confirm that the flash plugin can be verified and returned. |
| base::FilePath returned_flash_path; |
| std::string version; |
| ASSERT_TRUE(component_flash_hint_file::VerifyAndReturnFlashLocation( |
| &returned_flash_path, &version)); |
| ASSERT_EQ(returned_flash_path, flash_dir); |
| ASSERT_EQ(version, flash_version); |
| |
| // Now "corrupt" the flash file and make sure the checksum fails and nothing |
| // is returned. |
| file[0] = 0xAA; |
| ASSERT_TRUE(base::WriteFile(flash_dir, reinterpret_cast<const char*>(file), |
| sizeof(file)) == sizeof(file)); |
| base::FilePath empty_path; |
| std::string empty_version; |
| ASSERT_FALSE(component_flash_hint_file::VerifyAndReturnFlashLocation( |
| &empty_path, &empty_version)); |
| ASSERT_NE(empty_path, flash_dir); |
| ASSERT_FALSE(empty_version == flash_version); |
| } |
| |
| TEST_F(ComponentFlashHintFileTest, CorruptionTest) { |
| const base::ScopedPathOverride path_override(chrome::DIR_USER_DATA); |
| EXPECT_FALSE(component_flash_hint_file::DoesHintFileExist()); |
| |
| base::FilePath flash_dir; |
| ASSERT_TRUE(base::PathService::Get( |
| chrome::DIR_COMPONENT_UPDATED_PEPPER_FLASH_PLUGIN, &flash_dir)); |
| |
| base::File::Error error; |
| ASSERT_TRUE(base::CreateDirectoryAndGetError(flash_dir, &error)); |
| flash_dir = flash_dir.Append("libflash.so"); |
| |
| const uint8_t file[] = {0x56, 0x61, 0x20, 0x67, 0x75, 0x76, |
| 0x66, 0x20, 0x62, 0x61, 0x72, 0x20}; |
| ASSERT_TRUE(base::WriteFile(flash_dir, reinterpret_cast<const char*>(file), |
| sizeof(file)) == sizeof(file)); |
| const std::string flash_version = "1.0.0.1"; |
| ASSERT_TRUE(component_flash_hint_file::RecordFlashUpdate(flash_dir, flash_dir, |
| flash_version)); |
| ASSERT_TRUE(component_flash_hint_file::DoesHintFileExist()); |
| |
| // Now write out a new flash version that will not be moved into place. |
| const uint8_t updated_file[] = {0x43, 0x72, 0x62, 0x63, 0x79, 0x72, |
| 0x20, 0x66, 0x7a, 0x76, 0x79, 0x76}; |
| base::FilePath flash_dir_update; |
| ASSERT_TRUE(base::PathService::Get( |
| chrome::DIR_COMPONENT_UPDATED_PEPPER_FLASH_PLUGIN, &flash_dir_update)); |
| flash_dir_update = flash_dir_update.Append("other_flash.so"); |
| ASSERT_TRUE(base::WriteFile(flash_dir_update, |
| reinterpret_cast<const char*>(updated_file), |
| sizeof(updated_file)) == sizeof(updated_file)); |
| ASSERT_TRUE(component_flash_hint_file::RecordFlashUpdate( |
| flash_dir_update, flash_dir, flash_version)); |
| // |flash_dir_update| needs to be moved to |flash_dir|, but this test |
| // deliberately skips that step, so VerifyAndReturnFlashLocation should fail. |
| base::FilePath failed_flash_dir; |
| std::string failed_version; |
| ASSERT_FALSE(component_flash_hint_file::VerifyAndReturnFlashLocation( |
| &failed_flash_dir, &failed_version)); |
| } |
| |
| TEST_F(ComponentFlashHintFileTest, ExecTest1) { |
| base::ScopedTempDir temp_dir; |
| ASSERT_TRUE(temp_dir.CreateUniqueTempDir()); |
| base::FilePath file_path = temp_dir.GetPath().Append("plugin.so"); |
| const uint8_t file[] = {0x55, 0x62, 0x79, 0x71, 0x20, |
| 0x6c, 0x62, 0x68, 0x65, 0x20}; |
| |
| ASSERT_TRUE(base::WriteFile(file_path, reinterpret_cast<const char*>(file), |
| sizeof(file)) == sizeof(file)); |
| ASSERT_TRUE(component_flash_hint_file::TestExecutableMapping(file_path)); |
| } |
| |
| MULTIPROCESS_TEST_MAIN(NoExecMountTest) { |
| if (unshare(CLONE_NEWUSER | CLONE_NEWNS) != 0) { |
| LOG(ERROR) << "This kernel does not support unprivileged namespaces. " |
| "ExecTest2 will succeed without running."; |
| return 0; |
| } |
| // Now mount a NOEXEC fs. |
| const unsigned long tmpfs_flags = MS_NODEV | MS_NOSUID | MS_NOEXEC; |
| base::ScopedTempDir temp_dir; |
| CHECK(temp_dir.CreateUniqueTempDir()); |
| CHECK_EQ(0, mount("tmpfs", temp_dir.GetPath().value().c_str(), "tmpfs", |
| tmpfs_flags, nullptr)); |
| const base::FilePath file_path = temp_dir.GetPath().Append("plugin.so"); |
| const uint8_t file[] = {0x56, 0x61, 0x20, 0x67, 0x75, 0x72, |
| 0x20, 0x70, 0x76, 0x67, 0x6c, 0x20}; |
| bool test_exec = false; |
| bool file_written = |
| base::WriteFile(file_path, reinterpret_cast<const char*>(file), |
| sizeof(file)) == static_cast<int>(sizeof(file)); |
| if (file_written) |
| test_exec = component_flash_hint_file::TestExecutableMapping(file_path); |
| |
| if (umount(temp_dir.GetPath().value().c_str()) != 0) |
| LOG(ERROR) << "Could not unmount directory " << temp_dir.GetPath().value(); |
| |
| CHECK(file_written); |
| CHECK(!test_exec); |
| return 0; |
| } |
| |
| TEST_F(ComponentFlashHintFileTest, ExecTest2) { |
| base::Process process = SpawnChild("NoExecMountTest"); |
| ASSERT_TRUE(process.IsValid()); |
| int exit_code = 42; |
| ASSERT_TRUE(process.WaitForExitWithTimeout(TestTimeouts::action_max_timeout(), |
| &exit_code)); |
| EXPECT_EQ(0, exit_code); |
| } |
| |
| } // namespace chrome |