| // Copyright 2018 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 "fuchsia/engine/context_provider_impl.h" |
| |
| #include <fuchsia/sys/cpp/fidl.h> |
| #include <lib/async/default.h> |
| #include <lib/fdio/directory.h> |
| #include <lib/fdio/fd.h> |
| #include <lib/fdio/io.h> |
| #include <lib/zx/job.h> |
| #include <stdio.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <zircon/processargs.h> |
| |
| #include <utility> |
| #include <vector> |
| |
| #include "base/base_paths_fuchsia.h" |
| #include "base/bind.h" |
| #include "base/command_line.h" |
| #include "base/files/scoped_file.h" |
| #include "base/fuchsia/default_job.h" |
| #include "base/fuchsia/fuchsia_logging.h" |
| #include "base/logging.h" |
| #include "base/path_service.h" |
| #include "base/process/launch.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_util.h" |
| #include "content/public/common/content_switches.h" |
| #include "fuchsia/engine/common.h" |
| #include "net/http/http_util.h" |
| #include "services/service_manager/sandbox/fuchsia/sandbox_policy_fuchsia.h" |
| |
| namespace { |
| |
| // Returns the underlying channel if |directory| is a client endpoint for a |
| // |fuchsia::io::Directory| protocol. Otherwise, returns an empty channel. |
| zx::channel ValidateDirectoryAndTakeChannel( |
| fidl::InterfaceHandle<fuchsia::io::Directory> directory_handle) { |
| fidl::SynchronousInterfacePtr<fuchsia::io::Directory> directory = |
| directory_handle.BindSync(); |
| zx_status_t status = ZX_ERR_INTERNAL; |
| std::vector<uint8_t> entries; |
| |
| directory->ReadDirents(0, &status, &entries); |
| if (status == ZX_OK) { |
| return directory.Unbind().TakeChannel(); |
| } |
| |
| // Not a directory. |
| return zx::channel(); |
| } |
| |
| // Verifies that Vulkan loader service is provided by the specified service |
| // directory. |
| bool CheckVulkanSupport( |
| const fidl::InterfaceHandle<::fuchsia::io::Directory>& directory_handle, |
| bool* vulkan_supported) { |
| zx::channel dir_channel(fdio_service_clone(directory_handle.channel().get())); |
| if (!dir_channel) |
| return false; |
| |
| base::ScopedFD dir_fd; |
| zx_status_t status = fdio_fd_create(dir_channel.release(), |
| base::ScopedFD::Receiver(dir_fd).get()); |
| if (status != ZX_OK) { |
| ZX_DLOG(ERROR, status) << "fdio_fd_create()"; |
| return false; |
| } |
| |
| struct stat statbuf; |
| int result = |
| fstatat(dir_fd.get(), "fuchsia.vulkan.loader.Loader", &statbuf, 0); |
| *vulkan_supported = result == 0; |
| |
| return true; |
| } |
| |
| } // namespace |
| |
| ContextProviderImpl::ContextProviderImpl() = default; |
| |
| ContextProviderImpl::~ContextProviderImpl() = default; |
| |
| void ContextProviderImpl::Create( |
| fuchsia::web::CreateContextParams params, |
| fidl::InterfaceRequest<fuchsia::web::Context> context_request) { |
| if (!context_request.is_valid()) { |
| DLOG(ERROR) << "Invalid |context_request|."; |
| return; |
| } |
| if (!params.has_service_directory()) { |
| DLOG(ERROR) |
| << "Missing argument |service_directory| in CreateContextParams."; |
| context_request.Close(ZX_ERR_INVALID_ARGS); |
| return; |
| } |
| |
| fidl::InterfaceHandle<::fuchsia::io::Directory> service_directory = |
| std::move(*params.mutable_service_directory()); |
| |
| // Enable Vulkan if the Vulkan loader service is present in the service |
| // directory. |
| bool vulkan_supported = false; |
| if (!CheckVulkanSupport(service_directory, &vulkan_supported)) { |
| // TODO(crbug.com/934539): Add type epitaph. |
| DLOG(WARNING) << "Invalid |service_directory| in CreateContextParams."; |
| return; |
| } |
| |
| base::LaunchOptions launch_options; |
| service_manager::SandboxPolicyFuchsia sandbox_policy; |
| sandbox_policy.Initialize(service_manager::SANDBOX_TYPE_WEB_CONTEXT); |
| sandbox_policy.SetServiceDirectory(std::move(service_directory)); |
| sandbox_policy.UpdateLaunchOptionsForSandbox(&launch_options); |
| |
| // Transfer the ContextRequest handle to a well-known location in the child |
| // process' handle table. |
| launch_options.handles_to_transfer.push_back( |
| {kContextRequestHandleId, context_request.channel().get()}); |
| |
| // Bind |data_directory| to /data directory, if provided. |
| if (params.has_data_directory()) { |
| zx::channel data_directory_channel = ValidateDirectoryAndTakeChannel( |
| std::move(*params.mutable_data_directory())); |
| if (data_directory_channel.get() == ZX_HANDLE_INVALID) { |
| DLOG(ERROR) |
| << "Invalid argument |data_directory| in CreateContextParams."; |
| context_request.Close(ZX_ERR_INVALID_ARGS); |
| return; |
| } |
| |
| base::FilePath data_path; |
| if (!base::PathService::Get(base::DIR_APP_DATA, &data_path)) { |
| DLOG(ERROR) << "Failed to get data directory service path."; |
| return; |
| } |
| launch_options.paths_to_transfer.push_back( |
| base::PathToTransfer{data_path, data_directory_channel.release()}); |
| } |
| |
| // Isolate the child Context processes by containing them within their own |
| // respective jobs. |
| zx::job job; |
| zx_status_t status = zx::job::create(*base::GetDefaultJob(), 0, &job); |
| if (status != ZX_OK) { |
| ZX_LOG(ERROR, status) << "zx_job_create"; |
| return; |
| } |
| launch_options.job_handle = job.get(); |
| |
| base::CommandLine launch_command = *base::CommandLine::ForCurrentProcess(); |
| std::vector<zx::channel> devtools_listener_channels; |
| |
| if (params.has_remote_debugging_port()) { |
| launch_command.AppendSwitchNative( |
| switches::kRemoteDebuggingPort, |
| base::NumberToString(params.remote_debugging_port())); |
| } else if (devtools_listeners_.size() != 0) { |
| // Connect DevTools listeners to the new Context process. |
| std::vector<std::string> handles_ids; |
| for (auto& devtools_listener : devtools_listeners_.ptrs()) { |
| fidl::InterfaceHandle<fuchsia::web::DevToolsPerContextListener> |
| client_listener; |
| devtools_listener.get()->get()->OnContextDevToolsAvailable( |
| client_listener.NewRequest()); |
| devtools_listener_channels.emplace_back(client_listener.TakeChannel()); |
| handles_ids.push_back( |
| base::NumberToString(base::LaunchOptions::AddHandleToTransfer( |
| &launch_options.handles_to_transfer, |
| devtools_listener_channels.back().get()))); |
| } |
| launch_command.AppendSwitchNative(kRemoteDebuggerHandles, |
| base::JoinString(handles_ids, ",")); |
| } |
| |
| #if defined(WEB_ENGINE_ENABLE_VULKAN) |
| // Enable Vulkan when the Vulkan loader service is included in the service |
| // directory. |
| // TODO(https://crbug.com/962617): Enable Vulkan by default and remove this |
| // hack. |
| if (vulkan_supported) { |
| launch_command.AppendSwitchASCII( |
| "--enable-features", "DefaultEnableOopRasterization,UseSkiaRenderer"); |
| launch_command.AppendSwitch("--use-vulkan"); |
| launch_command.AppendSwitchASCII("--use-gl", "stub"); |
| } |
| #endif // WEB_ENGINE_ENABLE_VULKAN |
| |
| // Validate embedder-supplied product, and optional version, and pass it to |
| // the Context to include in the UserAgent. |
| if (params.has_user_agent_product()) { |
| if (!net::HttpUtil::IsToken(params.user_agent_product())) { |
| DLOG(ERROR) << "Invalid embedder product."; |
| context_request.Close(ZX_ERR_INVALID_ARGS); |
| return; |
| } |
| std::string product_tag(params.user_agent_product()); |
| if (params.has_user_agent_version()) { |
| if (!net::HttpUtil::IsToken(params.user_agent_version())) { |
| DLOG(ERROR) << "Invalid embedder version."; |
| context_request.Close(ZX_ERR_INVALID_ARGS); |
| return; |
| } |
| product_tag += "/" + params.user_agent_version(); |
| } |
| launch_command.AppendSwitchNative(kUserAgentProductAndVersion, |
| std::move(product_tag)); |
| } else if (params.has_user_agent_version()) { |
| DLOG(ERROR) << "Embedder version without product."; |
| context_request.Close(ZX_ERR_INVALID_ARGS); |
| return; |
| } |
| |
| if (launch_for_test_) |
| launch_for_test_.Run(launch_command, launch_options); |
| else |
| base::LaunchProcess(launch_command, launch_options); |
| |
| // |context_request| and any DevTools channels were transferred (not copied) |
| // to the Context process. |
| ignore_result(context_request.TakeChannel().release()); |
| for (auto& channel : devtools_listener_channels) |
| ignore_result(channel.release()); |
| } |
| |
| void ContextProviderImpl::SetLaunchCallbackForTest( |
| LaunchCallbackForTest launch) { |
| launch_for_test_ = std::move(launch); |
| } |
| |
| void ContextProviderImpl::EnableDevTools( |
| fidl::InterfaceHandle<fuchsia::web::DevToolsListener> listener, |
| EnableDevToolsCallback callback) { |
| devtools_listeners_.AddInterfacePtr(listener.Bind()); |
| callback(); |
| } |