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// Copyright 2015 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 "mojo/shell/application_instance.h"
#include <stdint.h>
#include <utility>
#include "base/atomic_sequence_num.h"
#include "base/bind.h"
#include "base/stl_util.h"
#include "mojo/common/common_type_converters.h"
#include "mojo/common/url_type_converters.h"
#include "mojo/shell/application_manager.h"
namespace mojo {
namespace shell {
ApplicationInstance::ApplicationInstance(
mojom::ShellClientPtr shell_client,
ApplicationManager* manager,
const Identity& identity,
const base::Closure& on_application_end,
const String& application_name)
: manager_(manager),
id_(GenerateUniqueID()),
identity_(identity),
allow_any_application_(identity.filter().size() == 1 &&
identity.filter().count("*") == 1),
on_application_end_(on_application_end),
shell_client_(std::move(shell_client)),
binding_(this),
pid_receiver_binding_(this),
queue_requests_(false),
native_runner_(nullptr),
application_name_(application_name),
pid_(base::kNullProcessId) {
DCHECK_NE(Shell::kInvalidApplicationID, id_);
}
ApplicationInstance::~ApplicationInstance() {
for (auto request : queued_client_requests_)
request->connect_callback().Run(kInvalidApplicationID);
STLDeleteElements(&queued_client_requests_);
}
void ApplicationInstance::InitializeApplication() {
shell_client_->Initialize(binding_.CreateInterfacePtrAndBind(),
identity_.url().spec(), id_);
binding_.set_connection_error_handler([this]() { OnConnectionError(); });
}
void ApplicationInstance::ConnectToClient(
scoped_ptr<ConnectToApplicationParams> params) {
if (queue_requests_) {
queued_client_requests_.push_back(params.release());
return;
}
CallAcceptConnection(std::move(params));
}
void ApplicationInstance::SetNativeRunner(NativeRunner* native_runner) {
native_runner_ = native_runner;
}
void ApplicationInstance::BindPIDReceiver(
InterfaceRequest<mojom::PIDReceiver> pid_receiver) {
pid_receiver_binding_.Bind(std::move(pid_receiver));
}
// Shell implementation:
void ApplicationInstance::ConnectToApplication(
URLRequestPtr app_request,
shell::mojom::InterfaceProviderRequest remote_interfaces,
shell::mojom::InterfaceProviderPtr local_interfaces,
mojom::CapabilityFilterPtr filter,
const ConnectToApplicationCallback& callback) {
std::string url_string = app_request->url.To<std::string>();
GURL url(url_string);
if (!url.is_valid()) {
LOG(ERROR) << "Error: invalid URL: " << url_string;
callback.Run(kInvalidApplicationID);
return;
}
if (allow_any_application_ ||
identity_.filter().find(url.spec()) != identity_.filter().end()) {
CapabilityFilter capability_filter = GetPermissiveCapabilityFilter();
if (!filter.is_null())
capability_filter = filter->filter.To<CapabilityFilter>();
scoped_ptr<ConnectToApplicationParams> params(
new ConnectToApplicationParams);
params->SetSource(this);
GURL app_url(app_request->url.get());
params->set_target(Identity(app_url, std::string(), capability_filter));
params->set_remote_interfaces(std::move(remote_interfaces));
params->set_local_interfaces(std::move(local_interfaces));
params->set_connect_callback(callback);
manager_->ConnectToApplication(std::move(params));
} else {
LOG(WARNING) << "CapabilityFilter prevented connection from: " <<
identity_.url() << " to: " << url.spec();
callback.Run(kInvalidApplicationID);
}
}
void ApplicationInstance::QuitApplication() {
queue_requests_ = true;
shell_client_->OnQuitRequested(
base::Bind(&ApplicationInstance::OnQuitRequestedResult,
base::Unretained(this)));
}
void ApplicationInstance::SetPID(uint32_t pid) {
// This will call us back to update pid_.
manager_->ApplicationPIDAvailable(id_, pid);
}
uint32_t ApplicationInstance::GenerateUniqueID() const {
static uint32_t id = Shell::kInvalidApplicationID;
++id;
CHECK_NE(Shell::kInvalidApplicationID, id);
return id;
}
void ApplicationInstance::CallAcceptConnection(
scoped_ptr<ConnectToApplicationParams> params) {
params->connect_callback().Run(id_);
AllowedInterfaces interfaces;
interfaces.insert("*");
if (!params->source().is_null())
interfaces = GetAllowedInterfaces(params->source().filter(), identity_);
ApplicationInstance* source =
manager_->GetApplicationInstance(params->source());
uint32_t source_id = source ? source->id() : Shell::kInvalidApplicationID;
shell_client_->AcceptConnection(
params->source().url().spec(), source_id, params->TakeRemoteInterfaces(),
params->TakeLocalInterfaces(), Array<String>::From(interfaces),
params->target().url().spec());
}
void ApplicationInstance::OnConnectionError() {
std::vector<ConnectToApplicationParams*> queued_client_requests;
queued_client_requests_.swap(queued_client_requests);
auto manager = manager_;
manager_->OnApplicationInstanceError(this);
//|this| is deleted.
// If any queued requests came to shell during time it was shutting down,
// start them now.
for (auto request : queued_client_requests)
manager->ConnectToApplication(make_scoped_ptr(request));
}
void ApplicationInstance::OnQuitRequestedResult(bool can_quit) {
if (can_quit)
return;
queue_requests_ = false;
for (auto request : queued_client_requests_)
CallAcceptConnection(make_scoped_ptr(request));
queued_client_requests_.clear();
}
} // namespace shell
} // namespace mojo
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