| // Copyright (c) 2013 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/browser/component_updater/widevine_cdm_component_installer.h" |
| |
| #include <string.h> |
| |
| #include <vector> |
| |
| #include "base/base_paths.h" |
| #include "base/bind.h" |
| #include "base/command_line.h" |
| #include "base/compiler_specific.h" |
| #include "base/file_util.h" |
| #include "base/files/file_enumerator.h" |
| #include "base/files/file_path.h" |
| #include "base/logging.h" |
| #include "base/path_service.h" |
| #include "base/strings/string_util.h" |
| #include "base/values.h" |
| #include "base/version.h" |
| #include "build/build_config.h" |
| #include "chrome/browser/component_updater/component_updater_service.h" |
| #include "chrome/browser/plugins/plugin_prefs.h" |
| #include "chrome/common/chrome_constants.h" |
| #include "chrome/common/chrome_paths.h" |
| #include "chrome/common/widevine_cdm_constants.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "content/public/browser/plugin_service.h" |
| #include "content/public/common/pepper_plugin_info.h" |
| #include "third_party/widevine/cdm/widevine_cdm_common.h" |
| |
| #include "widevine_cdm_version.h" // In SHARED_INTERMEDIATE_DIR. |
| |
| using content::BrowserThread; |
| using content::PluginService; |
| |
| namespace { |
| |
| // TODO(xhwang): Move duplicate code among all component installer |
| // implementations to some common place. |
| |
| #if defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT) |
| |
| // CRX hash. The extension id is: oimompecagnajdejgnnjijobebaeigek. |
| const uint8 kSha2Hash[] = { 0xe8, 0xce, 0xcf, 0x42, 0x06, 0xd0, 0x93, 0x49, |
| 0x6d, 0xd9, 0x89, 0xe1, 0x41, 0x04, 0x86, 0x4a, |
| 0x8f, 0xbd, 0x86, 0x12, 0xb9, 0x58, 0x9b, 0xfb, |
| 0x4f, 0xbb, 0x1b, 0xa9, 0xd3, 0x85, 0x37, 0xef }; |
| |
| // File name of the Widevine CDM component manifest on different platforms. |
| const char kWidevineCdmManifestName[] = "WidevineCdm"; |
| |
| // Name of the Widevine CDM OS in the component manifest. |
| const char kWidevineCdmPlatform[] = |
| #if defined(OS_MACOSX) |
| "mac"; |
| #elif defined(OS_WIN) |
| "win"; |
| #else // OS_LINUX, etc. TODO(viettrungluu): Separate out Chrome OS and Android? |
| "linux"; |
| #endif |
| |
| // Name of the Widevine CDM architecture in the component manifest. |
| const char kWidevineCdmArch[] = |
| #if defined(ARCH_CPU_X86) |
| "x86"; |
| #elif defined(ARCH_CPU_X86_64) |
| "x64"; |
| #else // TODO(viettrungluu): Support an ARM check? |
| "???"; |
| #endif |
| |
| // If we don't have a Widevine CDM component, this is the version we claim. |
| const char kNullVersion[] = "0.0.0.0"; |
| |
| // The base directory on Windows looks like: |
| // <profile>\AppData\Local\Google\Chrome\User Data\WidevineCdm\. |
| base::FilePath GetWidevineCdmBaseDirectory() { |
| base::FilePath result; |
| PathService::Get(chrome::DIR_COMPONENT_WIDEVINE_CDM, &result); |
| return result; |
| } |
| |
| // Widevine CDM is packaged as a multi-CRX. Widevine CDM binaries are located in |
| // _platform_specific/<platform_arch> folder in the package. This function |
| // returns the platform-specific subdirectory that is part of that multi-CRX. |
| base::FilePath GetPlatformDirectory(const base::FilePath& base_path) { |
| std::string platform_arch = kWidevineCdmPlatform; |
| platform_arch += '_'; |
| platform_arch += kWidevineCdmArch; |
| return base_path.AppendASCII("_platform_specific").AppendASCII(platform_arch); |
| } |
| |
| // Widevine CDM has the version encoded in the path so we need to enumerate the |
| // directories to find the full path. |
| // On success, |latest_dir| returns something like: |
| // <profile>\AppData\Local\Google\Chrome\User Data\WidevineCdm\10.3.44.555\. |
| // |latest_version| returns the corresponding version number. |older_dirs| |
| // returns directories of all older versions. |
| bool GetWidevineCdmDirectory(base::FilePath* latest_dir, |
| base::Version* latest_version, |
| std::vector<base::FilePath>* older_dirs) { |
| base::FilePath base_dir = GetWidevineCdmBaseDirectory(); |
| bool found = false; |
| base::FileEnumerator file_enumerator( |
| base_dir, false, base::FileEnumerator::DIRECTORIES); |
| for (base::FilePath path = file_enumerator.Next(); !path.value().empty(); |
| path = file_enumerator.Next()) { |
| base::Version version(path.BaseName().MaybeAsASCII()); |
| if (!version.IsValid()) |
| continue; |
| if (found) { |
| if (version.CompareTo(*latest_version) > 0) { |
| older_dirs->push_back(*latest_dir); |
| *latest_dir = path; |
| *latest_version = version; |
| } else { |
| older_dirs->push_back(path); |
| } |
| } else { |
| *latest_dir = path; |
| *latest_version = version; |
| found = true; |
| } |
| } |
| return found; |
| } |
| |
| bool MakeWidevineCdmPluginInfo(const base::FilePath& path, |
| const base::Version& version, |
| content::PepperPluginInfo* plugin_info) { |
| if (!version.IsValid() || |
| version.components().size() != |
| static_cast<size_t>(kWidevineCdmVersionNumComponents)) { |
| return false; |
| } |
| |
| plugin_info->is_internal = false; |
| // Widevine CDM must run out of process. |
| plugin_info->is_out_of_process = true; |
| plugin_info->path = path; |
| plugin_info->name = kWidevineCdmDisplayName; |
| plugin_info->description = kWidevineCdmDescription; |
| plugin_info->version = version.GetString(); |
| content::WebPluginMimeType widevine_cdm_mime_type( |
| kWidevineCdmPluginMimeType, |
| kWidevineCdmPluginExtension, |
| kWidevineCdmPluginMimeTypeDescription); |
| plugin_info->mime_types.push_back(widevine_cdm_mime_type); |
| plugin_info->permissions = kWidevineCdmPluginPermissions; |
| |
| return true; |
| } |
| |
| void RegisterWidevineCdmWithChrome(const base::FilePath& path, |
| const base::Version& version) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| content::PepperPluginInfo plugin_info; |
| if (!MakeWidevineCdmPluginInfo(path, version, &plugin_info)) |
| return; |
| |
| PluginService::GetInstance()->RegisterInternalPlugin( |
| plugin_info.ToWebPluginInfo(), true); |
| PluginService::GetInstance()->RefreshPlugins(); |
| } |
| |
| // Returns true if this browser is compatible with the given Widevine CDM |
| // manifest, with the version specified in the manifest in |version_out|. |
| bool CheckWidevineCdmManifest(const base::DictionaryValue& manifest, |
| base::Version* version_out) { |
| std::string name; |
| manifest.GetStringASCII("name", &name); |
| |
| if (name != kWidevineCdmManifestName) |
| return false; |
| |
| std::string proposed_version; |
| manifest.GetStringASCII("version", &proposed_version); |
| base::Version version(proposed_version.c_str()); |
| if (!version.IsValid()) |
| return false; |
| |
| *version_out = version; |
| return true; |
| } |
| |
| class WidevineCdmComponentInstaller : public ComponentInstaller { |
| public: |
| explicit WidevineCdmComponentInstaller(const base::Version& version); |
| virtual ~WidevineCdmComponentInstaller() {} |
| |
| virtual void OnUpdateError(int error) OVERRIDE; |
| virtual bool Install(const base::DictionaryValue& manifest, |
| const base::FilePath& unpack_path) OVERRIDE; |
| |
| virtual bool GetInstalledFile(const std::string& file, |
| base::FilePath* installed_file) OVERRIDE; |
| |
| private: |
| base::Version current_version_; |
| }; |
| |
| WidevineCdmComponentInstaller::WidevineCdmComponentInstaller( |
| const base::Version& version) |
| : current_version_(version) { |
| DCHECK(version.IsValid()); |
| } |
| |
| void WidevineCdmComponentInstaller::OnUpdateError(int error) { |
| NOTREACHED() << "Widevine CDM update error: " << error; |
| } |
| |
| bool WidevineCdmComponentInstaller::Install( |
| const base::DictionaryValue& manifest, |
| const base::FilePath& unpack_path) { |
| base::Version version; |
| if (!CheckWidevineCdmManifest(manifest, &version)) |
| return false; |
| if (current_version_.CompareTo(version) > 0) |
| return false; |
| |
| if (!base::PathExists( |
| GetPlatformDirectory(unpack_path).AppendASCII(kWidevineCdmFileName))) { |
| return false; |
| } |
| |
| base::FilePath adapter_source_path; |
| PathService::Get(chrome::FILE_WIDEVINE_CDM_ADAPTER, &adapter_source_path); |
| if (!base::PathExists(adapter_source_path)) |
| return false; |
| |
| // Passed the basic tests. Time to install it. |
| base::FilePath install_path = |
| GetWidevineCdmBaseDirectory().AppendASCII(version.GetString()); |
| if (base::PathExists(install_path)) |
| return false; |
| if (!base::Move(unpack_path, install_path)) |
| return false; |
| |
| base::FilePath adapter_install_path = GetPlatformDirectory(install_path) |
| .AppendASCII(kWidevineCdmAdapterFileName); |
| if (!base::CopyFile(adapter_source_path, adapter_install_path)) |
| return false; |
| |
| // Installation is done. Now register the Widevine CDM with chrome. |
| current_version_ = version; |
| BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, base::Bind( |
| &RegisterWidevineCdmWithChrome, adapter_install_path, version)); |
| return true; |
| } |
| |
| // Given |file|, a path like "_platform_specific/win_x86/widevinecdm.dll", |
| // returns the assumed install path. The path separator in |file| is '/' |
| // for all platforms. Caller is responsible for checking that the |
| // |installed_file| actually exists. |
| bool WidevineCdmComponentInstaller::GetInstalledFile( |
| const std::string& file, base::FilePath* installed_file) { |
| if (current_version_.Equals(base::Version(kNullVersion))) |
| return false; // No CDM has been installed yet. |
| |
| *installed_file = GetWidevineCdmBaseDirectory().AppendASCII( |
| current_version_.GetString()).AppendASCII(file); |
| return true; |
| } |
| |
| void FinishWidevineCdmUpdateRegistration(ComponentUpdateService* cus, |
| const base::Version& version) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| CrxComponent widevine_cdm; |
| widevine_cdm.name = "WidevineCdm"; |
| widevine_cdm.installer = new WidevineCdmComponentInstaller(version); |
| widevine_cdm.version = version; |
| widevine_cdm.pk_hash.assign(kSha2Hash, &kSha2Hash[sizeof(kSha2Hash)]); |
| if (cus->RegisterComponent(widevine_cdm) != ComponentUpdateService::kOk) { |
| NOTREACHED() << "Widevine CDM component registration failed."; |
| return; |
| } |
| } |
| |
| void StartWidevineCdmUpdateRegistration(ComponentUpdateService* cus) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE)); |
| base::FilePath base_dir = GetWidevineCdmBaseDirectory(); |
| if (!base::PathExists(base_dir) && |
| !file_util::CreateDirectory(base_dir)) { |
| NOTREACHED() << "Could not create Widevine CDM directory."; |
| return; |
| } |
| |
| base::FilePath latest_dir; |
| base::Version version(kNullVersion); |
| std::vector<base::FilePath> older_dirs; |
| |
| if (GetWidevineCdmDirectory(&latest_dir, &version, &older_dirs)) { |
| base::FilePath latest_platform_dir = GetPlatformDirectory(latest_dir); |
| base::FilePath adapter_path = |
| latest_platform_dir.AppendASCII(kWidevineCdmAdapterFileName); |
| base::FilePath cdm_path = |
| latest_platform_dir.AppendASCII(kWidevineCdmFileName); |
| |
| if (base::PathExists(adapter_path) && |
| base::PathExists(cdm_path)) { |
| BrowserThread::PostTask( |
| BrowserThread::UI, FROM_HERE, |
| base::Bind(&RegisterWidevineCdmWithChrome, adapter_path, version)); |
| } else { |
| base::DeleteFile(latest_dir, true); |
| version = base::Version(kNullVersion); |
| } |
| } |
| |
| BrowserThread::PostTask( |
| BrowserThread::UI, FROM_HERE, |
| base::Bind(&FinishWidevineCdmUpdateRegistration, cus, version)); |
| |
| // Remove older versions of Widevine CDM. |
| for (std::vector<base::FilePath>::iterator iter = older_dirs.begin(); |
| iter != older_dirs.end(); ++iter) { |
| base::DeleteFile(*iter, true); |
| } |
| } |
| |
| #endif // defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT) |
| |
| } // namespace |
| |
| void RegisterWidevineCdmComponent(ComponentUpdateService* cus) { |
| #if defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT) |
| BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE, |
| base::Bind(&StartWidevineCdmUpdateRegistration, cus)); |
| #endif // defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT) |
| } |