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// Copyright 2014 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 <algorithm>
#include <utility>
#include "base/bind.h"
#include "base/message_loop/message_loop.h"
#include "mojo/converters/network/network_type_converters.h"
#include "mojo/public/cpp/bindings/interface_ptr.h"
#include "mojo/public/cpp/environment/logging.h"
#include "mojo/shell/public/cpp/application_impl.h"
#include "mojo/shell/public/cpp/lib/service_registry.h"
#include "mojo/shell/public/cpp/shell_client.h"
namespace mojo {
namespace {
void DefaultTerminationClosure() {
if (base::MessageLoop::current() &&
base::MessageLoop::current()->is_running())
base::MessageLoop::current()->QuitWhenIdle();
}
} // namespace
ApplicationImpl::ConnectParams::ConnectParams(const std::string& url)
: ConnectParams(URLRequest::From(url)) {}
ApplicationImpl::ConnectParams::ConnectParams(URLRequestPtr request)
: request_(std::move(request)),
filter_(shell::mojom::CapabilityFilter::New()) {
filter_->filter.mark_non_null();
}
ApplicationImpl::ConnectParams::~ConnectParams() {}
ApplicationImpl::ApplicationImpl(
ShellClient* client,
InterfaceRequest<shell::mojom::Application> request)
: ApplicationImpl(client,
std::move(request),
base::Bind(&DefaultTerminationClosure)) {}
ApplicationImpl::ApplicationImpl(
ShellClient* client,
InterfaceRequest<shell::mojom::Application> request,
const Closure& termination_closure)
: client_(client),
binding_(this, std::move(request)),
termination_closure_(termination_closure),
app_lifetime_helper_(this),
quit_requested_(false),
weak_factory_(this) {}
ApplicationImpl::~ApplicationImpl() {
app_lifetime_helper_.OnQuit();
}
void ApplicationImpl::WaitForInitialize() {
DCHECK(!shell_.is_bound());
binding_.WaitForIncomingMethodCall();
}
scoped_ptr<Connection> ApplicationImpl::ConnectToApplication(
const std::string& url) {
ConnectParams params(url);
params.set_filter(CreatePermissiveCapabilityFilter());
return ConnectToApplication(¶ms);
}
scoped_ptr<Connection> ApplicationImpl::ConnectToApplication(
ConnectParams* params) {
if (!shell_)
return nullptr;
DCHECK(params);
URLRequestPtr request = params->TakeRequest();
ServiceProviderPtr local_services;
InterfaceRequest<ServiceProvider> local_request = GetProxy(&local_services);
ServiceProviderPtr remote_services;
std::string application_url = request->url.To<std::string>();
// We allow all interfaces on outgoing connections since we are presumably in
// a position to know who we're talking to.
// TODO(beng): is this a valid assumption or do we need to figure some way to
// filter here too?
std::set<std::string> allowed;
allowed.insert("*");
InterfaceRequest<ServiceProvider> remote_services_proxy =
GetProxy(&remote_services);
scoped_ptr<internal::ServiceRegistry> registry(new internal::ServiceRegistry(
application_url, application_url,
shell::mojom::Shell::kInvalidApplicationID, std::move(remote_services),
std::move(local_request), allowed));
shell_->ConnectToApplication(std::move(request),
std::move(remote_services_proxy),
std::move(local_services), params->TakeFilter(),
registry->GetConnectToApplicationCallback());
return std::move(registry);
}
void ApplicationImpl::Quit() {
// We can't quit immediately, since there could be in-flight requests from the
// shell. So check with it first.
if (shell_) {
quit_requested_ = true;
shell_->QuitApplication();
} else {
QuitNow();
}
}
scoped_ptr<AppRefCount> ApplicationImpl::CreateAppRefCount() {
return app_lifetime_helper_.CreateAppRefCount();
}
void ApplicationImpl::Initialize(shell::mojom::ShellPtr shell,
const mojo::String& url,
uint32_t id) {
shell_ = std::move(shell);
shell_.set_connection_error_handler([this]() { OnConnectionError(); });
client_->Initialize(this, url, id);
}
void ApplicationImpl::AcceptConnection(
const String& requestor_url,
uint32_t requestor_id,
InterfaceRequest<ServiceProvider> services,
ServiceProviderPtr exposed_services,
Array<String> allowed_interfaces,
const String& url) {
scoped_ptr<Connection> registry(new internal::ServiceRegistry(
url, requestor_url, requestor_id, std::move(exposed_services),
std::move(services), allowed_interfaces.To<std::set<std::string>>()));
if (!client_->AcceptConnection(registry.get()))
return;
// If we were quitting because we thought there were no more services for this
// app in use, then that has changed so cancel the quit request.
if (quit_requested_)
quit_requested_ = false;
incoming_connections_.push_back(std::move(registry));
}
void ApplicationImpl::OnQuitRequested(const Callback<void(bool)>& callback) {
// If by the time we got the reply from the shell, more requests had come in
// then we don't want to quit the app anymore so we return false. Otherwise
// |quit_requested_| is true so we tell the shell to proceed with the quit.
callback.Run(quit_requested_);
if (quit_requested_)
QuitNow();
}
void ApplicationImpl::OnConnectionError() {
base::WeakPtr<ApplicationImpl> ptr(weak_factory_.GetWeakPtr());
// We give the client notice first, since it might want to do something on
// shell connection errors other than immediate termination of the run
// loop. The application might want to continue servicing connections other
// than the one to the shell.
bool quit_now = client_->ShellConnectionLost();
if (quit_now)
QuitNow();
if (!ptr)
return;
shell_ = nullptr;
}
void ApplicationImpl::QuitNow() {
client_->Quit();
termination_closure_.Run();
}
void ApplicationImpl::UnbindConnections(
InterfaceRequest<shell::mojom::Application>* application_request,
shell::mojom::ShellPtr* shell) {
*application_request = binding_.Unbind();
shell->Bind(shell_.PassInterface());
}
shell::mojom::CapabilityFilterPtr CreatePermissiveCapabilityFilter() {
shell::mojom::CapabilityFilterPtr filter(
shell::mojom::CapabilityFilter::New());
Array<String> all_interfaces;
all_interfaces.push_back("*");
filter->filter.insert("*", std::move(all_interfaces));
return filter;
}
} // namespace mojo
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