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//
// Copyright (C) 2015 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_HOSTAPD_MONITOR_H_
#define APMANAGER_HOSTAPD_MONITOR_H_
#include <string>
#include <base/cancelable_callback.h>
#include <base/macros.h>
#include <base/memory/weak_ptr.h>
#include "apmanager/event_dispatcher.h"
namespace shill {
struct InputData;
class IOHandler;
class IOHandlerFactory;
class Sockets;
} // namespace shill
namespace apmanager {
// Class for monitoring events from hostapd control interface.
class HostapdMonitor {
public:
enum Event {
kHostapdFailed,
kHostapdStarted,
kStationConnected,
kStationDisconnected,
};
typedef base::Callback<void(Event event, const std::string& data)>
EventCallback;
HostapdMonitor(const EventCallback& callback_,
const std::string& control_interface_path,
const std::string& network_interface_name);
virtual ~HostapdMonitor();
virtual void Start();
private:
friend class HostapdMonitorTest;
static const char kLocalPathFormat[];
static const char kHostapdCmdAttach[];
static const char kHostapdRespOk[];
static const char kHostapdEventStationConnected[];
static const char kHostapdEventStationDisconnected[];
static const int kHostapdCtrlIfaceCheckIntervalMs;
static const int kHostapdCtrlIfaceCheckMaxAttempts;
static const int kHostapdAttachTimeoutMs;
static const int kInvalidSocket;
// Task for checking if hostapd control interface is up or not.
void HostapdCtrlIfaceCheckTask();
// Attach to hostapd control interface to receive unsolicited event
// notifications.
void AttachToHostapd();
void AttachTimeoutHandler();
bool SendMessage(const char* message, size_t length);
void ParseMessage(shill::InputData* data);
void OnReadError(const std::string& error_msg);
std::unique_ptr<shill::Sockets> sockets_;
EventCallback event_callback_;
// File path for interprocess communication with hostapd.
std::string dest_path_;
std::string local_path_;
// Socket descriptor for communication with hostapd.
int hostapd_socket_;
base::Callback<void(shill::InputData *)> hostapd_callback_;
std::unique_ptr<shill::IOHandler> hostapd_input_handler_;
shill::IOHandlerFactory *io_handler_factory_;
EventDispatcher* event_dispatcher_;
base::WeakPtrFactory<HostapdMonitor> weak_ptr_factory_;
int hostapd_ctrl_iface_check_count_;
base::CancelableClosure attach_timeout_callback_;
bool started_;
DISALLOW_COPY_AND_ASSIGN(HostapdMonitor);
};
} // namespace apmanager
#endif // APMANAGER_HOSTAPD_MONITOR_H_
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