144 lines
4.7 KiB
C++
144 lines
4.7 KiB
C++
// Copyright (c) 2015 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/utility/atom_content_utility_client.h"
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#include <utility>
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#include "base/command_line.h"
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#include "base/no_destructor.h"
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#include "base/threading/sequenced_task_runner_handle.h"
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#include "content/public/child/child_thread.h"
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#include "content/public/common/service_manager_connection.h"
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#include "content/public/common/simple_connection_filter.h"
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#include "content/public/utility/utility_thread.h"
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#include "mojo/public/cpp/bindings/service_factory.h"
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#include "services/proxy_resolver/proxy_resolver_factory_impl.h"
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#include "services/proxy_resolver/public/mojom/proxy_resolver.mojom.h"
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#include "services/service_manager/public/cpp/service.h"
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#include "services/service_manager/sandbox/switches.h"
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#if BUILDFLAG(ENABLE_PRINTING)
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#include "chrome/services/printing/printing_service.h"
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#include "chrome/services/printing/public/mojom/constants.mojom.h"
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#include "components/services/pdf_compositor/public/cpp/pdf_compositor_service_factory.h"
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#include "components/services/pdf_compositor/public/mojom/pdf_compositor.mojom.h"
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#if defined(OS_WIN)
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#include "chrome/services/printing/pdf_to_emf_converter_factory.h"
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#include "chrome/utility/printing_handler.h"
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#endif // defined(OS_WIN)
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#endif // BUILDFLAG(ENABLE_PRINTING)
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namespace electron {
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namespace {
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void RunServiceAsyncThenTerminateProcess(
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std::unique_ptr<service_manager::Service> service) {
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service_manager::Service::RunAsyncUntilTermination(
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std::move(service),
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base::BindOnce([] { content::UtilityThread::Get()->ReleaseProcess(); }));
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}
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auto RunProxyResolver(
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mojo::PendingReceiver<proxy_resolver::mojom::ProxyResolverFactory>
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receiver) {
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return std::make_unique<proxy_resolver::ProxyResolverFactoryImpl>(
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std::move(receiver));
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}
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} // namespace
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AtomContentUtilityClient::AtomContentUtilityClient() : elevated_(false) {
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#if BUILDFLAG(ENABLE_PRINTING) && defined(OS_WIN)
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printing_handler_ = std::make_unique<printing::PrintingHandler>();
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#endif
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}
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AtomContentUtilityClient::~AtomContentUtilityClient() {}
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// The guts of this came from the chromium implementation
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// https://cs.chromium.org/chromium/src/chrome/utility/
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// chrome_content_utility_client.cc?sq=package:chromium&dr=CSs&g=0&l=142
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void AtomContentUtilityClient::UtilityThreadStarted() {
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#if defined(OS_WIN)
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base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
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elevated_ = command_line->HasSwitch(
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service_manager::switches::kNoSandboxAndElevatedPrivileges);
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#endif
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content::ServiceManagerConnection* connection =
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content::ChildThread::Get()->GetServiceManagerConnection();
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// NOTE: Some utility process instances are not connected to the Service
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// Manager. Nothing left to do in that case.
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if (!connection)
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return;
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auto registry = std::make_unique<service_manager::BinderRegistry>();
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// If our process runs with elevated privileges, only add elevated Mojo
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// interfaces to the interface registry.
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if (!elevated_) {
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#if BUILDFLAG(ENABLE_PRINTING) && defined(OS_WIN)
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// TODO(crbug.com/798782): remove when the Cloud print chrome/service is
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// removed.
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registry->AddInterface(
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base::BindRepeating(printing::PdfToEmfConverterFactory::Create),
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base::ThreadTaskRunnerHandle::Get());
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#endif
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}
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connection->AddConnectionFilter(
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std::make_unique<content::SimpleConnectionFilter>(std::move(registry)));
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}
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bool AtomContentUtilityClient::OnMessageReceived(const IPC::Message& message) {
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if (elevated_)
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return false;
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#if BUILDFLAG(ENABLE_PRINTING) && defined(OS_WIN)
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if (printing_handler_->OnMessageReceived(message))
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return true;
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#endif
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return false;
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}
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bool AtomContentUtilityClient::HandleServiceRequest(
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const std::string& service_name,
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service_manager::mojom::ServiceRequest request) {
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auto service = MaybeCreateMainThreadService(service_name, std::move(request));
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if (service) {
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RunServiceAsyncThenTerminateProcess(std::move(service));
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return true;
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}
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return false;
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}
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mojo::ServiceFactory* AtomContentUtilityClient::GetIOThreadServiceFactory() {
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static base::NoDestructor<mojo::ServiceFactory> factory{RunProxyResolver};
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return factory.get();
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}
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std::unique_ptr<service_manager::Service>
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AtomContentUtilityClient::MaybeCreateMainThreadService(
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const std::string& service_name,
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service_manager::mojom::ServiceRequest request) {
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#if BUILDFLAG(ENABLE_PRINTING)
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if (service_name == printing::mojom::kServiceName) {
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return printing::CreatePdfCompositorService(std::move(request));
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}
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if (service_name == printing::mojom::kChromePrintingServiceName) {
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return std::make_unique<printing::PrintingService>(std::move(request));
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}
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#endif
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return nullptr;
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}
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} // namespace electron
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