511ff8bc8d
When widevine was disabled at the build level we never dealt with the callback passed into GetSupportedKeySystems. This was ok until requests became marked pending in https://chromium-review.googlesource.com/c/chromium/src/+/3430502 until the callback was called. This resulted in a promise never resolving / rejecting and certain media websites (E.g. spotify) hanging on load waiting for a signal that would never arrive.
260 lines
10 KiB
C++
260 lines
10 KiB
C++
// Copyright (c) 2014 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "shell/app/electron_content_client.h"
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#include <string>
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#include <utility>
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#include <vector>
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#include "base/command_line.h"
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#include "base/files/file_util.h"
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#include "base/path_service.h"
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#include "base/strings/string_split.h"
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#include "base/strings/string_util.h"
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#include "base/strings/utf_string_conversions.h"
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#include "content/public/common/content_constants.h"
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#include "content/public/common/content_switches.h"
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#include "electron/buildflags/buildflags.h"
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#include "extensions/common/constants.h"
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#include "pdf/buildflags.h"
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#include "ppapi/buildflags/buildflags.h"
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#include "shell/common/electron_paths.h"
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#include "shell/common/options_switches.h"
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#include "third_party/widevine/cdm/buildflags.h"
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#include "ui/base/l10n/l10n_util.h"
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#include "ui/base/resource/resource_bundle.h"
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#include "url/url_constants.h"
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// In SHARED_INTERMEDIATE_DIR.
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#include "widevine_cdm_version.h" // NOLINT(build/include_directory)
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#if BUILDFLAG(ENABLE_WIDEVINE)
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#include "base/native_library.h"
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#include "content/public/common/cdm_info.h"
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#include "media/base/video_codecs.h"
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#endif // BUILDFLAG(ENABLE_WIDEVINE)
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#if BUILDFLAG(ENABLE_PDF_VIEWER)
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#include "chrome/common/pdf_util.h"
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#include "components/pdf/common/internal_plugin_helpers.h"
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#include "pdf/pdf.h" // nogncheck
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#include "shell/common/electron_constants.h"
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#endif // BUILDFLAG(ENABLE_PDF_VIEWER)
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#if BUILDFLAG(ENABLE_PLUGINS)
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#include "content/public/browser/plugin_service.h"
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#include "content/public/common/pepper_plugin_info.h"
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#include "ppapi/shared_impl/ppapi_permissions.h"
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#include "ppapi/shared_impl/ppapi_switches.h" // nogncheck crbug.com/1125897
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#endif // BUILDFLAG(ENABLE_PLUGINS)
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namespace electron {
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namespace {
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enum class WidevineCdmFileCheck {
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kNotChecked,
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kFound,
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kNotFound,
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};
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#if BUILDFLAG(ENABLE_WIDEVINE)
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bool IsWidevineAvailable(
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base::FilePath* cdm_path,
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std::vector<media::VideoCodec>* codecs_supported,
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base::flat_set<media::CdmSessionType>* session_types_supported,
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base::flat_set<media::EncryptionMode>* modes_supported) {
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static WidevineCdmFileCheck widevine_cdm_file_check =
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WidevineCdmFileCheck::kNotChecked;
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if (widevine_cdm_file_check == WidevineCdmFileCheck::kNotChecked) {
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base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
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*cdm_path = command_line->GetSwitchValuePath(switches::kWidevineCdmPath);
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if (!cdm_path->empty()) {
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*cdm_path = cdm_path->AppendASCII(
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base::GetNativeLibraryName(kWidevineCdmLibraryName));
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widevine_cdm_file_check = base::PathExists(*cdm_path)
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? WidevineCdmFileCheck::kFound
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: WidevineCdmFileCheck::kNotFound;
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}
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}
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if (widevine_cdm_file_check == WidevineCdmFileCheck::kFound) {
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// Add the supported codecs as if they came from the component manifest.
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// This list must match the CDM that is being bundled with Chrome.
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codecs_supported->push_back(media::VideoCodec::kCodecVP8);
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codecs_supported->push_back(media::VideoCodec::kCodecVP9);
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#if BUILDFLAG(USE_PROPRIETARY_CODECS)
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codecs_supported->push_back(media::VideoCodec::kCodecH264);
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#endif // BUILDFLAG(USE_PROPRIETARY_CODECS)
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// TODO(crbug.com/767941): Push persistent-license support info here once
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// we check in a new CDM that supports it on Linux.
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session_types_supported->insert(media::CdmSessionType::kTemporary);
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#if BUILDFLAG(IS_CHROMEOS)
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session_types_supported->insert(media::CdmSessionType::kPersistentLicense);
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#endif // BUILDFLAG(IS_CHROMEOS)
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modes_supported->insert(media::EncryptionMode::kCenc);
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return true;
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}
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return false;
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}
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#endif // BUILDFLAG(ENABLE_WIDEVINE)
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#if BUILDFLAG(ENABLE_PLUGINS)
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void ComputeBuiltInPlugins(std::vector<content::PepperPluginInfo>* plugins) {
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#if BUILDFLAG(ENABLE_PDF_VIEWER)
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// TODO(upstream/thestig): Figure out how to make the PDF Viewer work without
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// this PPAPI plugin registration.
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content::PepperPluginInfo pdf_info;
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pdf_info.is_internal = true;
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pdf_info.is_out_of_process = true;
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pdf_info.name = kPDFInternalPluginName;
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pdf_info.description = "Portable Document Format";
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// This isn't a real file path; it's just used as a unique identifier.
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pdf_info.path = base::FilePath(kPdfPluginPath);
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content::WebPluginMimeType pdf_mime_type(pdf::kInternalPluginMimeType, "pdf",
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"Portable Document Format");
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pdf_info.mime_types.push_back(pdf_mime_type);
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plugins->push_back(pdf_info);
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// NB. in Chrome, this plugin isn't registered until the PDF extension is
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// loaded. However, in Electron, we load the PDF extension unconditionally
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// when it is enabled in the build, so we're OK to load the plugin eagerly
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// here.
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content::WebPluginInfo info;
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info.type = content::WebPluginInfo::PLUGIN_TYPE_BROWSER_PLUGIN;
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info.name = base::ASCIIToUTF16(kPDFExtensionPluginName);
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// This isn't a real file path; it's just used as a unique identifier.
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info.path = base::FilePath::FromUTF8Unsafe(extension_misc::kPdfExtensionId);
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info.background_color = content::WebPluginInfo::kDefaultBackgroundColor;
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info.mime_types.emplace_back(kPDFMimeType, "pdf", "Portable Document Format");
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content::PluginService::GetInstance()->RefreshPlugins();
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content::PluginService::GetInstance()->RegisterInternalPlugin(info, true);
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#endif // BUILDFLAG(ENABLE_PDF_VIEWER)
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}
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#endif // BUILDFLAG(ENABLE_PLUGINS)
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void AppendDelimitedSwitchToVector(const base::StringPiece cmd_switch,
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std::vector<std::string>* append_me) {
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auto* command_line = base::CommandLine::ForCurrentProcess();
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auto switch_value = command_line->GetSwitchValueASCII(cmd_switch);
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if (!switch_value.empty()) {
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constexpr base::StringPiece delimiter(",", 1);
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auto tokens =
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base::SplitString(switch_value, delimiter, base::TRIM_WHITESPACE,
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base::SPLIT_WANT_NONEMPTY);
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append_me->reserve(append_me->size() + tokens.size());
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std::move(std::begin(tokens), std::end(tokens),
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std::back_inserter(*append_me));
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}
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}
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} // namespace
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ElectronContentClient::ElectronContentClient() = default;
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ElectronContentClient::~ElectronContentClient() = default;
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std::u16string ElectronContentClient::GetLocalizedString(int message_id) {
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return l10n_util::GetStringUTF16(message_id);
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}
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base::StringPiece ElectronContentClient::GetDataResource(
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int resource_id,
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ui::ResourceScaleFactor scale_factor) {
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return ui::ResourceBundle::GetSharedInstance().GetRawDataResourceForScale(
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resource_id, scale_factor);
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}
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gfx::Image& ElectronContentClient::GetNativeImageNamed(int resource_id) {
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return ui::ResourceBundle::GetSharedInstance().GetNativeImageNamed(
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resource_id);
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}
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base::RefCountedMemory* ElectronContentClient::GetDataResourceBytes(
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int resource_id) {
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return ui::ResourceBundle::GetSharedInstance().LoadDataResourceBytes(
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resource_id);
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}
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void ElectronContentClient::AddAdditionalSchemes(Schemes* schemes) {
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auto* command_line = base::CommandLine::ForCurrentProcess();
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std::string process_type =
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command_line->GetSwitchValueASCII(::switches::kProcessType);
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// Browser Process registration happens in
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// `api::Protocol::RegisterSchemesAsPrivileged`
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//
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// Renderer Process registration happens in `RendererClientBase`
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//
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// We use this for registration to network utility process
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if (process_type == ::switches::kUtilityProcess) {
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AppendDelimitedSwitchToVector(switches::kServiceWorkerSchemes,
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&schemes->service_worker_schemes);
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AppendDelimitedSwitchToVector(switches::kStandardSchemes,
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&schemes->standard_schemes);
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AppendDelimitedSwitchToVector(switches::kSecureSchemes,
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&schemes->secure_schemes);
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AppendDelimitedSwitchToVector(switches::kBypassCSPSchemes,
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&schemes->csp_bypassing_schemes);
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AppendDelimitedSwitchToVector(switches::kCORSSchemes,
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&schemes->cors_enabled_schemes);
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}
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schemes->service_worker_schemes.emplace_back(url::kFileScheme);
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#if BUILDFLAG(ENABLE_ELECTRON_EXTENSIONS)
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schemes->standard_schemes.push_back(extensions::kExtensionScheme);
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schemes->savable_schemes.push_back(extensions::kExtensionScheme);
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schemes->secure_schemes.push_back(extensions::kExtensionScheme);
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schemes->service_worker_schemes.push_back(extensions::kExtensionScheme);
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schemes->cors_enabled_schemes.push_back(extensions::kExtensionScheme);
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schemes->csp_bypassing_schemes.push_back(extensions::kExtensionScheme);
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#endif
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}
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void ElectronContentClient::AddPepperPlugins(
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std::vector<content::PepperPluginInfo>* plugins) {
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#if BUILDFLAG(ENABLE_PLUGINS)
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ComputeBuiltInPlugins(plugins);
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#endif // BUILDFLAG(ENABLE_PLUGINS)
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}
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void ElectronContentClient::AddContentDecryptionModules(
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std::vector<content::CdmInfo>* cdms,
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std::vector<media::CdmHostFilePath>* cdm_host_file_paths) {
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if (cdms) {
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#if BUILDFLAG(ENABLE_WIDEVINE)
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base::FilePath cdm_path;
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std::vector<media::VideoCodec> video_codecs_supported;
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base::flat_set<media::CdmSessionType> session_types_supported;
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base::flat_set<media::EncryptionMode> encryption_modes_supported;
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if (IsWidevineAvailable(&cdm_path, &video_codecs_supported,
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&session_types_supported,
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&encryption_modes_supported)) {
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base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
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auto cdm_version_string =
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command_line->GetSwitchValueASCII(switches::kWidevineCdmVersion);
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// CdmInfo needs |path| to be the actual Widevine library,
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// not the adapter, so adjust as necessary. It will be in the
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// same directory as the installed adapter.
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const base::Version version(cdm_version_string);
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DCHECK(version.IsValid());
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content::CdmCapability capability(
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video_codecs_supported, encryption_modes_supported,
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session_types_supported, base::flat_set<media::CdmProxy::Protocol>());
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cdms->push_back(content::CdmInfo(
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kWidevineCdmDisplayName, kWidevineCdmGuid, version, cdm_path,
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kWidevineCdmFileSystemId, capability, kWidevineKeySystem, false));
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}
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#endif // BUILDFLAG(ENABLE_WIDEVINE)
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}
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}
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} // namespace electron
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