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//
// Copyright (C) 2014 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#ifndef APMANAGER_SERVICE_H_
#define APMANAGER_SERVICE_H_
#include <string>
#include <base/callback.h>
#include <base/macros.h>
#include <base/memory/ref_counted.h>
#include <base/memory/weak_ptr.h>
#include <brillo/process.h>
#include "apmanager/config.h"
#include "apmanager/dhcp_server_factory.h"
#include "apmanager/error.h"
#include "apmanager/file_writer.h"
#include "apmanager/hostapd_monitor.h"
#include "apmanager/process_factory.h"
#include "apmanager/service_adaptor_interface.h"
namespace apmanager {
class Manager;
#if defined(__BRILLO__)
class EventDispatcher;
#endif // __BRILLO__
class Service : public base::RefCounted<Service> {
public:
Service(Manager* manager, int service_identifier);
virtual ~Service();
void Start(const base::Callback<void(const Error&)>& result_callback);
bool Stop(Error* error);
int identifier() const { return identifier_; }
ServiceAdaptorInterface* adaptor() const { return adaptor_.get(); }
Config* config() const { return config_.get(); }
private:
friend class ServiceTest;
static const char kHostapdPath[];
static const char kHostapdConfigPathFormat[];
static const char kHostapdControlInterfacePath[];
static const int kTerminationTimeoutSeconds;
static const char kStateIdle[];
static const char kStateStarting[];
static const char kStateStarted[];
static const char kStateFailed[];
#if defined(__BRILLO__)
static const int kAPInterfaceCheckIntervalMilliseconds;
static const int kAPInterfaceCheckMaxAttempts;
// Task to check enumeration status of the specified AP interface
// |interface_name|.
void APInterfaceCheckTask(
const std::string& interface_name,
int check_count,
const base::Callback<void(const Error&)>& result_callback);
// Handle asynchronous service start failures.
void HandleStartFailure();
#endif // __BRILLO__
bool StartInternal(Error* error);
// Return true if hostapd process is currently running.
bool IsHostapdRunning();
// Start hostapd process. Return true if process is created/started
// successfully, false otherwise.
bool StartHostapdProcess(const std::string& config_file_path);
// Stop the running hostapd process. Sending it a SIGTERM signal first, then
// a SIGKILL if failed to terminated with SIGTERM.
void StopHostapdProcess();
// Release resources allocated to this service.
void ReleaseResources();
void HostapdEventCallback(HostapdMonitor::Event event,
const std::string& data);
Manager* manager_;
int identifier_;
std::unique_ptr<Config> config_;
std::unique_ptr<ServiceAdaptorInterface> adaptor_;
std::unique_ptr<brillo::Process> hostapd_process_;
std::unique_ptr<DHCPServer> dhcp_server_;
DHCPServerFactory* dhcp_server_factory_;
FileWriter* file_writer_;
ProcessFactory* process_factory_;
std::unique_ptr<HostapdMonitor> hostapd_monitor_;
#if defined(__BRILLO__)
EventDispatcher* event_dispatcher_;
bool start_in_progress_;
#endif // __BRILLO__
base::WeakPtrFactory<Service> weak_factory_{this};
DISALLOW_COPY_AND_ASSIGN(Service);
};
} // namespace apmanager
#endif // APMANAGER_SERVICE_H_
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