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// Copyright 2016 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/app/mash/mash_runner.h"
#include "ash/mus/sysui_application.h"
#include "base/at_exit.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/debug/debugger.h"
#include "base/i18n/icu_util.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/process/launch.h"
#include "components/mus/mus_app.h"
#include "components/resource_provider/resource_provider_app.h"
#include "content/public/common/content_switches.h"
#include "mash/quick_launch/quick_launch_application.h"
#include "mash/shell/shell_application_delegate.h"
#include "mash/wm/window_manager_application.h"
#include "mojo/common/mojo_scheme_register.h"
#include "mojo/public/cpp/bindings/binding_set.h"
#include "mojo/shell/background/background_shell.h"
#include "mojo/shell/identity.h"
#include "mojo/shell/native_runner_delegate.h"
#include "mojo/shell/public/cpp/shell_client.h"
#include "mojo/shell/public/cpp/shell_connection.h"
#include "mojo/shell/public/interfaces/shell_client_factory.mojom.h"
#include "mojo/shell/runner/common/switches.h"
#include "mojo/shell/runner/host/child_process_base.h"
#include "url/gurl.h"
#include "url/url_util.h"
#if defined(OS_LINUX)
#include "components/font_service/font_service_app.h"
#endif
using mojo::shell::mojom::ShellClientFactory;
namespace {
// kProcessType used to identify child processes.
const char* kMashChild = "mash-child";
// ShellClient responsible for starting the appropriate app.
class DefaultShellClient : public mojo::ShellClient,
public ShellClientFactory,
public mojo::InterfaceFactory<ShellClientFactory> {
public:
DefaultShellClient() {}
~DefaultShellClient() override {}
// mojo::ShellClient:
bool AcceptConnection(mojo::Connection* connection) override {
connection->AddInterface<ShellClientFactory>(this);
return true;
}
// mojo::InterfaceFactory<ShellClientFactory>
void Create(mojo::Connection* connection,
mojo::InterfaceRequest<ShellClientFactory> request) override {
shell_client_factory_bindings_.AddBinding(this, std::move(request));
}
// ShellClientFactory:
void CreateShellClient(mojo::shell::mojom::ShellClientRequest request,
const mojo::String& mojo_url) override {
const GURL url = GURL(std::string(mojo_url));
if (shell_client_) {
LOG(ERROR) << "request to create additional app " << url;
return;
}
shell_client_ = CreateShellClient(url);
if (shell_client_) {
shell_connection_.reset(
new mojo::ShellConnection(shell_client_.get(), std::move(request)));
return;
}
LOG(ERROR) << "unknown url " << url;
NOTREACHED();
}
private:
// TODO(sky): move this into mash.
scoped_ptr<mojo::ShellClient> CreateShellClient(const GURL& url) {
if (url == GURL("mojo:ash_sysui"))
return make_scoped_ptr(new ash::sysui::SysUIApplication);
if (url == GURL("mojo:desktop_wm"))
return make_scoped_ptr(new mash::wm::WindowManagerApplication);
if (url == GURL("mojo:mash_shell"))
return make_scoped_ptr(new mash::shell::ShellApplicationDelegate);
if (url == GURL("mojo:mus"))
return make_scoped_ptr(new mus::MandolineUIServicesApp);
if (url == GURL("mojo:quick_launch"))
return make_scoped_ptr(new mash::quick_launch::QuickLaunchApplication);
if (url == GURL("mojo:resource_provider")) {
return make_scoped_ptr(
new resource_provider::ResourceProviderApp("mojo:resource_provider"));
}
#if defined(OS_LINUX)
if (url == GURL("mojo:font_service"))
return make_scoped_ptr(new font_service::FontServiceApp);
#endif
return nullptr;
}
mojo::BindingSet<ShellClientFactory> shell_client_factory_bindings_;
scoped_ptr<mojo::ShellClient> shell_client_;
scoped_ptr<mojo::ShellConnection> shell_connection_;
DISALLOW_COPY_AND_ASSIGN(DefaultShellClient);
};
bool IsChild() {
return base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kProcessType) &&
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kProcessType) == kMashChild;
}
// Convert the command line program from chrome_mash to chrome. This is
// necessary as the shell will attempt to start chrome_mash. We want chrome.
void ChangeChromeMashToChrome(base::CommandLine* command_line) {
base::FilePath exe_path(command_line->GetProgram());
#if defined(OS_WIN)
exe_path = exe_path.DirName().Append(FILE_PATH_LITERAL("chrome.exe"));
#else
exe_path = exe_path.DirName().Append(FILE_PATH_LITERAL("chrome"));
#endif
command_line->SetProgram(exe_path);
}
class NativeRunnerDelegateImpl : public mojo::shell::NativeRunnerDelegate {
public:
NativeRunnerDelegateImpl() {}
~NativeRunnerDelegateImpl() override {}
private:
// mojo::shell::NativeRunnerDelegate:
void AdjustCommandLineArgumentsForTarget(
const mojo::shell::Identity& target,
base::CommandLine* command_line) override {
if (target.url() != GURL("exe:chrome")) {
if (target.url() == GURL("exe:chrome_mash"))
ChangeChromeMashToChrome(command_line);
command_line->AppendSwitchASCII(switches::kProcessType, kMashChild);
#if defined(OS_WIN)
command_line->AppendArg(switches::kPrefetchArgumentOther);
#endif
return;
}
base::CommandLine::StringVector argv(command_line->argv());
auto iter =
std::find(argv.begin(), argv.end(), FILE_PATH_LITERAL("--mash"));
if (iter != argv.end())
argv.erase(iter);
*command_line = base::CommandLine(argv);
}
DISALLOW_COPY_AND_ASSIGN(NativeRunnerDelegateImpl);
};
} // namespace
MashRunner::MashRunner() {}
MashRunner::~MashRunner() {}
void MashRunner::Run() {
if (IsChild())
RunChild();
else
RunMain();
}
void MashRunner::RunMain() {
// TODO(sky): refactor backgroundshell so can supply own context, we
// shouldn't we using context as it has a lot of stuff we don't really want
// in chrome.
NativeRunnerDelegateImpl native_runner_delegate;
mojo::shell::BackgroundShell background_shell;
scoped_ptr<mojo::shell::BackgroundShell::InitParams> init_params(
new mojo::shell::BackgroundShell::InitParams);
init_params->native_runner_delegate = &native_runner_delegate;
background_shell.Init(std::move(init_params));
shell_client_.reset(new DefaultShellClient);
shell_connection_.reset(new mojo::ShellConnection(
shell_client_.get(),
background_shell.CreateShellClientRequest(GURL("exe:chrome_mash"))));
shell_connection_->WaitForInitialize();
static_cast<mojo::Shell*>(shell_connection_.get())
->Connect("mojo:mash_shell");
base::MessageLoop::current()->Run();
}
void MashRunner::RunChild() {
base::i18n::InitializeICU();
mojo::shell::ChildProcessMain(
base::Bind(&MashRunner::StartChildApp, base::Unretained(this)));
}
void MashRunner::StartChildApp(
mojo::shell::mojom::ShellClientRequest client_request) {
// TODO(sky): use MessagePumpMojo.
base::MessageLoop message_loop(base::MessageLoop::TYPE_UI);
shell_client_.reset(new DefaultShellClient);
shell_connection_.reset(new mojo::ShellConnection(shell_client_.get(),
std::move(client_request)));
message_loop.Run();
}
int MashMain() {
#if defined(OS_WIN)
base::RouteStdioToConsole(false);
#endif
// TODO(sky): wire this up correctly.
logging::LoggingSettings settings;
settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
logging::InitLogging(settings);
// To view log output with IDs and timestamps use "adb logcat -v threadtime".
logging::SetLogItems(false, // Process ID
false, // Thread ID
false, // Timestamp
false); // Tick count
mojo::RegisterMojoSchemes();
// TODO(sky): use MessagePumpMojo.
scoped_ptr<base::MessageLoop> message_loop;
#if defined(OS_LINUX)
base::AtExitManager exit_manager;
#endif
if (!IsChild())
message_loop.reset(new base::MessageLoop(base::MessageLoop::TYPE_UI));
MashRunner mash_runner;
mash_runner.Run();
return 0;
}
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