| // 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 <stddef.h> |
| #include <stdint.h> |
| #include <string.h> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/base_paths.h" |
| #include "base/bind.h" |
| #include "base/compiler_specific.h" |
| #include "base/files/file_path.h" |
| #include "base/files/file_util.h" |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "base/path_service.h" |
| #include "base/strings/string16.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_split.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/values.h" |
| #include "build/build_config.h" |
| #include "chrome/common/chrome_paths.h" |
| #include "chrome/common/widevine_cdm_constants.h" |
| #include "components/component_updater/component_updater_service.h" |
| #include "components/component_updater/default_component_installer.h" |
| #include "components/version_info/version_info.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "content/public/browser/plugin_service.h" |
| #include "content/public/common/pepper_plugin_info.h" |
| #include "media/cdm/supported_cdm_versions.h" |
| #include "third_party/widevine/cdm/widevine_cdm_common.h" |
| |
| #include "widevine_cdm_version.h" // In SHARED_INTERMEDIATE_DIR. NOLINT |
| |
| using content::BrowserThread; |
| using content::PluginService; |
| |
| namespace component_updater { |
| |
| #if defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT) |
| |
| namespace { |
| |
| // CRX hash. The extension id is: oimompecagnajdejgnnjijobebaeigek. |
| const uint8_t 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 adapter version file. The CDM adapter shares |
| // the same version number with Chromium version. |
| const char kCdmAdapterVersionName[] = "CdmAdapterVersion"; |
| |
| // 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 |
| |
| // The CDM manifest includes several custom values, all beginning with "x-cdm-". |
| // All values are strings. |
| // All values that are lists are delimited by commas. No trailing commas. |
| // For example, "1,2,4". |
| const char kCdmValueDelimiter = ','; |
| static_assert(kCdmValueDelimiter == kCdmSupportedCodecsValueDelimiter, |
| "cdm delimiters must match"); |
| // The following entries are required. |
| // Interface versions are lists of integers (e.g. "1" or "1,2,4"). |
| // These are checked in this file before registering the CDM. |
| // All match the interface versions from content_decryption_module.h that the |
| // CDM supports. |
| // Matches CDM_MODULE_VERSION. |
| const char kCdmModuleVersionsName[] = "x-cdm-module-versions"; |
| // Matches supported ContentDecryptionModule_* version(s). |
| const char kCdmInterfaceVersionsName[] = "x-cdm-interface-versions"; |
| // Matches supported Host_* version(s). |
| const char kCdmHostVersionsName[] = "x-cdm-host-versions"; |
| // The codecs list is a list of simple codec names (e.g. "vp8,vorbis"). |
| // The list is passed to other parts of Chrome. |
| const char kCdmCodecsListName[] = "x-cdm-codecs"; |
| |
| // 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); |
| } |
| |
| bool MakeWidevineCdmPluginInfo( |
| const base::Version& version, |
| const base::FilePath& path, |
| const std::vector<base::string16>& additional_param_names, |
| const std::vector<base::string16>& additional_param_values, |
| 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 + |
| std::string(" (version: ") + version.GetString() + |
| ")"; |
| plugin_info->version = version.GetString(); |
| content::WebPluginMimeType widevine_cdm_mime_type( |
| kWidevineCdmPluginMimeType, |
| kWidevineCdmPluginExtension, |
| kWidevineCdmPluginMimeTypeDescription); |
| widevine_cdm_mime_type.additional_param_names = additional_param_names; |
| widevine_cdm_mime_type.additional_param_values = additional_param_values; |
| plugin_info->mime_types.push_back(widevine_cdm_mime_type); |
| plugin_info->permissions = kWidevineCdmPluginPermissions; |
| |
| return true; |
| } |
| |
| typedef bool (*VersionCheckFunc)(int version); |
| |
| bool CheckForCompatibleVersion(const base::DictionaryValue& manifest, |
| const std::string version_name, |
| VersionCheckFunc version_check_func) { |
| std::string versions_string; |
| if (!manifest.GetString(version_name, &versions_string)) { |
| DLOG(WARNING) << "Widevine CDM component manifest missing " << version_name; |
| return false; |
| } |
| DLOG_IF(WARNING, versions_string.empty()) |
| << "Widevine CDM component manifest has empty " << version_name; |
| |
| for (const base::StringPiece& ver_str : base::SplitStringPiece( |
| versions_string, std::string(1, kCdmValueDelimiter), |
| base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) { |
| int version = 0; |
| if (base::StringToInt(ver_str, &version)) |
| if (version_check_func(version)) |
| return true; |
| } |
| |
| DLOG(WARNING) << "Widevine CDM component manifest has no supported " |
| << version_name << " in '" << versions_string << "'"; |
| return false; |
| } |
| |
| // Returns whether the CDM's API versions, as specified in the manifest, are |
| // compatible with this Chrome binary. |
| // Checks the module API, CDM interface API, and Host API. |
| // This should never fail except in rare cases where the component has not been |
| // updated recently or the user downgrades Chrome. |
| bool IsCompatibleWithChrome(const base::DictionaryValue& manifest) { |
| return CheckForCompatibleVersion(manifest, |
| kCdmModuleVersionsName, |
| media::IsSupportedCdmModuleVersion) && |
| CheckForCompatibleVersion(manifest, |
| kCdmInterfaceVersionsName, |
| media::IsSupportedCdmInterfaceVersion) && |
| CheckForCompatibleVersion(manifest, |
| kCdmHostVersionsName, |
| media::IsSupportedCdmHostVersion); |
| } |
| |
| void GetAdditionalParams(const base::DictionaryValue& manifest, |
| std::vector<base::string16>* additional_param_names, |
| std::vector<base::string16>* additional_param_values) { |
| base::string16 codecs; |
| if (manifest.GetString(kCdmCodecsListName, &codecs)) { |
| DLOG_IF(WARNING, codecs.empty()) |
| << "Widevine CDM component manifest has empty codecs list"; |
| additional_param_names->push_back( |
| base::ASCIIToUTF16(kCdmSupportedCodecsParamName)); |
| additional_param_values->push_back(codecs); |
| } else { |
| DLOG(WARNING) << "Widevine CDM component manifest is missing codecs"; |
| } |
| } |
| |
| void RegisterWidevineCdmWithChrome(const base::Version& cdm_version, |
| const base::FilePath& adapter_install_path, |
| scoped_ptr<base::DictionaryValue> manifest) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| std::vector<base::string16> additional_param_names; |
| std::vector<base::string16> additional_param_values; |
| GetAdditionalParams( |
| *manifest, &additional_param_names, &additional_param_values); |
| content::PepperPluginInfo plugin_info; |
| if (!MakeWidevineCdmPluginInfo(cdm_version, |
| adapter_install_path, |
| additional_param_names, |
| additional_param_values, |
| &plugin_info)) { |
| return; |
| } |
| |
| // true = Add to beginning of list to override any existing registrations. |
| PluginService::GetInstance()->RegisterInternalPlugin( |
| plugin_info.ToWebPluginInfo(), true); |
| // Tell the browser to refresh the plugin list. Then tell all renderers to |
| // update their plugin list caches. |
| PluginService::GetInstance()->RefreshPlugins(); |
| PluginService::GetInstance()->PurgePluginListCache(NULL, false); |
| } |
| |
| } // namespace |
| |
| class WidevineCdmComponentInstallerTraits : public ComponentInstallerTraits { |
| public: |
| WidevineCdmComponentInstallerTraits(); |
| ~WidevineCdmComponentInstallerTraits() override {} |
| |
| private: |
| // The following methods override ComponentInstallerTraits. |
| bool CanAutoUpdate() const override; |
| bool OnCustomInstall(const base::DictionaryValue& manifest, |
| const base::FilePath& install_dir) override; |
| bool VerifyInstallation( |
| const base::DictionaryValue& manifest, |
| const base::FilePath& install_dir) const override; |
| void ComponentReady( |
| const base::Version& version, |
| const base::FilePath& path, |
| scoped_ptr<base::DictionaryValue> manifest) override; |
| base::FilePath GetBaseDirectory() const override; |
| void GetHash(std::vector<uint8_t>* hash) const override; |
| std::string GetName() const override; |
| |
| // Checks and updates CDM adapter if necessary to make sure the latest CDM |
| // adapter is always used. |
| // Note: The component is ready when CDM is present, but the CDM won't be |
| // registered until the adapter is copied by this function (see |
| // VerifyInstallation). |
| void UpdateCdmAdapter(const base::Version& cdm_version, |
| const base::FilePath& cdm_install_dir, |
| scoped_ptr<base::DictionaryValue> manifest); |
| |
| DISALLOW_COPY_AND_ASSIGN(WidevineCdmComponentInstallerTraits); |
| }; |
| |
| WidevineCdmComponentInstallerTraits::WidevineCdmComponentInstallerTraits() { |
| } |
| |
| bool WidevineCdmComponentInstallerTraits::CanAutoUpdate() const { |
| return true; |
| } |
| |
| bool WidevineCdmComponentInstallerTraits::OnCustomInstall( |
| const base::DictionaryValue& manifest, |
| const base::FilePath& install_dir) { |
| return true; |
| } |
| |
| // Once the CDM is ready, check the CDM adapter. |
| void WidevineCdmComponentInstallerTraits::ComponentReady( |
| const base::Version& version, |
| const base::FilePath& path, |
| scoped_ptr<base::DictionaryValue> manifest) { |
| if (!IsCompatibleWithChrome(*manifest)) { |
| DLOG(WARNING) << "Installed Widevine CDM component is incompatible."; |
| return; |
| } |
| |
| BrowserThread::PostBlockingPoolTask( |
| FROM_HERE, |
| base::Bind(&WidevineCdmComponentInstallerTraits::UpdateCdmAdapter, |
| base::Unretained(this), |
| version, |
| path, |
| base::Passed(&manifest))); |
| } |
| |
| bool WidevineCdmComponentInstallerTraits::VerifyInstallation( |
| const base::DictionaryValue& manifest, |
| const base::FilePath& install_dir) const { |
| return IsCompatibleWithChrome(manifest) && |
| base::PathExists(GetPlatformDirectory(install_dir) |
| .AppendASCII(kWidevineCdmFileName)); |
| } |
| |
| // The base directory on Windows looks like: |
| // <profile>\AppData\Local\Google\Chrome\User Data\WidevineCdm\. |
| base::FilePath WidevineCdmComponentInstallerTraits::GetBaseDirectory() const { |
| base::FilePath result; |
| PathService::Get(chrome::DIR_COMPONENT_WIDEVINE_CDM, &result); |
| return result; |
| } |
| |
| void WidevineCdmComponentInstallerTraits::GetHash( |
| std::vector<uint8_t>* hash) const { |
| hash->assign(kSha2Hash, kSha2Hash + arraysize(kSha2Hash)); |
| } |
| |
| std::string WidevineCdmComponentInstallerTraits::GetName() const { |
| return kWidevineCdmDisplayName; |
| } |
| |
| void WidevineCdmComponentInstallerTraits::UpdateCdmAdapter( |
| const base::Version& cdm_version, |
| const base::FilePath& cdm_install_dir, |
| scoped_ptr<base::DictionaryValue> manifest) { |
| const base::FilePath adapter_version_path = |
| GetPlatformDirectory(cdm_install_dir).AppendASCII(kCdmAdapterVersionName); |
| const base::FilePath adapter_install_path = |
| GetPlatformDirectory(cdm_install_dir) |
| .AppendASCII(kWidevineCdmAdapterFileName); |
| |
| const std::string chrome_version = version_info::GetVersionNumber(); |
| DCHECK(!chrome_version.empty()); |
| std::string adapter_version; |
| if (!base::ReadFileToString(adapter_version_path, &adapter_version) || |
| adapter_version != chrome_version || |
| !base::PathExists(adapter_install_path)) { |
| int bytes_written = base::WriteFile( |
| adapter_version_path, chrome_version.data(), chrome_version.size()); |
| if (bytes_written < 0 || |
| static_cast<size_t>(bytes_written) != chrome_version.size()) { |
| DLOG(WARNING) << "Failed to write Widevine CDM adapter version file."; |
| // Ignore version file writing failure and try to copy the CDM adapter. |
| } |
| |
| base::FilePath adapter_source_path; |
| PathService::Get(chrome::FILE_WIDEVINE_CDM_ADAPTER, &adapter_source_path); |
| if (!base::CopyFile(adapter_source_path, adapter_install_path)) { |
| DLOG(WARNING) << "Failed to copy Widevine CDM adapter."; |
| return; |
| } |
| } |
| |
| BrowserThread::PostTask(content::BrowserThread::UI, |
| FROM_HERE, |
| base::Bind(&RegisterWidevineCdmWithChrome, |
| cdm_version, |
| adapter_install_path, |
| base::Passed(&manifest))); |
| } |
| |
| #endif // defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT) |
| |
| void RegisterWidevineCdmComponent(ComponentUpdateService* cus) { |
| #if defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT) |
| base::FilePath adapter_source_path; |
| PathService::Get(chrome::FILE_WIDEVINE_CDM_ADAPTER, &adapter_source_path); |
| if (!base::PathExists(adapter_source_path)) |
| return; |
| scoped_ptr<ComponentInstallerTraits> traits( |
| new WidevineCdmComponentInstallerTraits); |
| // |cus| will take ownership of |installer| during installer->Register(cus). |
| DefaultComponentInstaller* installer = |
| new DefaultComponentInstaller(std::move(traits)); |
| installer->Register(cus, base::Closure()); |
| #endif // defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT) |
| } |
| |
| } // namespace component_updater |
