121 lines
3.8 KiB
C++
121 lines
3.8 KiB
C++
//
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// Copyright (C) 2014 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#ifndef APMANAGER_DEVICE_INFO_H_
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#define APMANAGER_DEVICE_INFO_H_
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#include <map>
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#include <string>
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#include <base/callback.h>
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#include <base/files/file_path.h>
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#include <base/memory/ref_counted.h>
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#include <base/memory/weak_ptr.h>
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#include <gtest/gtest_prod.h> // for FRIEND_TEST
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#include "apmanager/device.h"
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namespace shill {
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class NetlinkManager;
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class Nl80211Message;
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class RTNLHandler;
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class RTNLMessage;
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class RTNLListener;
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} // namespace shill
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namespace apmanager {
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class ControlInterface;
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class Manager;
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// DeviceInfo will enumerate WiFi devices (PHYs) during startup and on-demand
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// (when new interface is detected but the corresponding device is not
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// enumerated). And use RTNL to monitor creation/deletion of WiFi interfaces.
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class DeviceInfo : public base::SupportsWeakPtr<DeviceInfo> {
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public:
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explicit DeviceInfo(Manager* manager);
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virtual ~DeviceInfo();
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// Start and stop device detection monitoring.
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void Start();
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void Stop();
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private:
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friend class DeviceInfoTest;
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static const char kDeviceInfoRoot[];
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static const char kInterfaceUevent[];
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static const char kInterfaceUeventWifiSignature[];
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// Use nl80211 to enumerate available WiFi PHYs.
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void EnumerateDevices();
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void OnWiFiPhyInfoReceived(const shill::Nl80211Message& msg);
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// Handler for RTNL link event.
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void LinkMsgHandler(const shill::RTNLMessage& msg);
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void AddLinkMsgHandler(const std::string& iface_name, int iface_index);
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void DelLinkMsgHandler(const std::string& iface_name, int iface_index);
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// Return true if the specify |iface_name| is a wifi interface, false
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// otherwise.
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bool IsWifiInterface(const std::string& iface_name);
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// Return the contents of the device info file |path_name| for interface
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// |iface_name| in output parameter |contents_out|. Return true if file
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// read succeed, fales otherwise.
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bool GetDeviceInfoContents(const std::string& iface_name,
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const std::string& path_name,
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std::string* contents_out);
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// Use nl80211 to get WiFi interface information for interface on
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// |iface_index|.
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void GetWiFiInterfaceInfo(int iface_index);
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void OnWiFiInterfaceInfoReceived(const shill::Nl80211Message& msg);
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// Use nl80211 to get PHY info for interface on |iface_index|.
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void GetWiFiInterfacePhyInfo(uint32_t iface_index);
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void OnWiFiInterfacePhyInfoReceived(
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uint32_t iface_index, const shill::Nl80211Message& msg);
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scoped_refptr<Device> GetDevice(const std::string& phy_name);
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void RegisterDevice(scoped_refptr<Device> device);
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// Maps interface index to interface info
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std::map<uint32_t, Device::WiFiInterface> interface_infos_;
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// Maps device name to device object. Each device object represents a PHY.
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std::map<std::string, scoped_refptr<Device>> devices_;
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// RTNL link event callback and listener.
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base::Callback<void(const shill::RTNLMessage&)> link_callback_;
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std::unique_ptr<shill::RTNLListener> link_listener_;
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base::FilePath device_info_root_;
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Manager* manager_;
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// Cache copy of singleton pointers.
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shill::NetlinkManager* netlink_manager_;
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shill::RTNLHandler* rtnl_handler_;
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int device_identifier_;
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DISALLOW_COPY_AND_ASSIGN(DeviceInfo);
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};
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} // namespace apmanager
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#endif // APMANAGER_DEVICE_INFO_H_
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