WifiAwareNativeManager.java revision ef6de4b88b850e9df98a9ffe51c71ac493f6c51b
164ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen/* 264ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * Copyright (C) 2016 The Android Open Source Project 364ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * 464ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * Licensed under the Apache License, Version 2.0 (the "License"); 564ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * you may not use this file except in compliance with the License. 664ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * You may obtain a copy of the License at 764ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * 864ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * http://www.apache.org/licenses/LICENSE-2.0 964ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * 1064ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * Unless required by applicable law or agreed to in writing, software 1164ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * distributed under the License is distributed on an "AS IS" BASIS, 1264ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1364ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * See the License for the specific language governing permissions and 1464ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * limitations under the License. 1564ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen */ 1664ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 1764ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohenpackage com.android.server.wifi.aware; 1864ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 1964ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohenimport android.hardware.wifi.V1_0.IWifiNanIface; 20448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohenimport android.hardware.wifi.V1_0.IfaceType; 21db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohenimport android.hardware.wifi.V1_0.WifiStatus; 22db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohenimport android.hardware.wifi.V1_0.WifiStatusCode; 23db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohenimport android.os.RemoteException; 2464ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohenimport android.util.Log; 2564ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 26c760a66378bbd844eb421658799b4d55c76b98faEtan Cohenimport com.android.internal.annotations.VisibleForTesting; 2764ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohenimport com.android.server.wifi.HalDeviceManager; 2864ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 29db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohenimport java.io.FileDescriptor; 30db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohenimport java.io.PrintWriter; 31db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen 3264ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen/** 3364ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen * Manages the interface to Wi-Fi Aware HIDL (HAL). 3464ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen */ 35c760a66378bbd844eb421658799b4d55c76b98faEtan Cohenpublic class WifiAwareNativeManager { 3664ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private static final String TAG = "WifiAwareNativeManager"; 3764ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private static final boolean DBG = false; 3864ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 3964ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen // to be used for synchronizing access to any of the WifiAwareNative objects 4064ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private final Object mLock = new Object(); 4164ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 4264ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private WifiAwareStateManager mWifiAwareStateManager; 4364ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private HalDeviceManager mHalDeviceManager; 44db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen private WifiAwareNativeCallback mWifiAwareNativeCallback; 4564ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private IWifiNanIface mWifiNanIface = null; 4664ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private InterfaceDestroyedListener mInterfaceDestroyedListener = 4764ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen new InterfaceDestroyedListener(); 4864ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private InterfaceAvailableForRequestListener mInterfaceAvailableForRequestListener = 4964ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen new InterfaceAvailableForRequestListener(); 5064ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 5164ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen WifiAwareNativeManager(WifiAwareStateManager awareStateManager, 52db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen HalDeviceManager halDeviceManager, 53db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen WifiAwareNativeCallback wifiAwareNativeCallback) { 5464ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen mWifiAwareStateManager = awareStateManager; 5564ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen mHalDeviceManager = halDeviceManager; 56db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen mWifiAwareNativeCallback = wifiAwareNativeCallback; 570b31edb987c0552b75667e05f0d589937a16f1adEtan Cohen } 580b31edb987c0552b75667e05f0d589937a16f1adEtan Cohen 590b31edb987c0552b75667e05f0d589937a16f1adEtan Cohen public void start() { 603145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen mHalDeviceManager.registerStatusListener( 613145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen new HalDeviceManager.ManagerStatusListener() { 6264ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen @Override 633145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen public void onStatusChanged() { 643145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen if (DBG) Log.d(TAG, "onStatusChanged"); 653145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen // only care about isStarted (Wi-Fi started) not isReady - since if not 663145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen // ready then Wi-Fi will also be down. 673145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen if (mHalDeviceManager.isStarted()) { 68448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohen // 1. no problem registering duplicates - only one will be called 69448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohen // 2. will be called immediately if available 70448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohen mHalDeviceManager.registerInterfaceAvailableForRequestListener( 71448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohen IfaceType.NAN, mInterfaceAvailableForRequestListener, null); 723145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen } else { 733145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen awareIsDown(); 743145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen } 7564ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 7664ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen }, null); 773145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen if (mHalDeviceManager.isStarted()) { 78ef6de4b88b850e9df98a9ffe51c71ac493f6c51bEtan Cohen mHalDeviceManager.registerInterfaceAvailableForRequestListener( 79ef6de4b88b850e9df98a9ffe51c71ac493f6c51bEtan Cohen IfaceType.NAN, mInterfaceAvailableForRequestListener, null); 803145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen tryToGetAware(); 813145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen } 8264ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 8364ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 84c760a66378bbd844eb421658799b4d55c76b98faEtan Cohen /** 85c760a66378bbd844eb421658799b4d55c76b98faEtan Cohen * Returns the native HAL WifiNanIface through which commands to the NAN HAL are dispatched. 86c760a66378bbd844eb421658799b4d55c76b98faEtan Cohen * Return may be null if not initialized/available. 87c760a66378bbd844eb421658799b4d55c76b98faEtan Cohen */ 88c760a66378bbd844eb421658799b4d55c76b98faEtan Cohen @VisibleForTesting 89c760a66378bbd844eb421658799b4d55c76b98faEtan Cohen public IWifiNanIface getWifiNanIface() { 9064ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen synchronized (mLock) { 9164ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen return mWifiNanIface; 9264ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 9364ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 9464ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 95c760a66378bbd844eb421658799b4d55c76b98faEtan Cohen /** 96c760a66378bbd844eb421658799b4d55c76b98faEtan Cohen * Attempt to obtain the HAL NAN interface. If available then enables Aware usage. 97c760a66378bbd844eb421658799b4d55c76b98faEtan Cohen */ 9864ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private void tryToGetAware() { 9964ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen synchronized (mLock) { 100448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohen if (DBG) Log.d(TAG, "tryToGetAware: mWifiNanIface=" + mWifiNanIface); 101448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohen 1023145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen if (mWifiNanIface != null) { 1033145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen return; 1043145bb4d3359647cccd9b4aba1734066f36bb2e6Etan Cohen } 105448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohen IWifiNanIface iface = mHalDeviceManager.createNanIface(mInterfaceDestroyedListener, 106448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohen null); 10764ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen if (iface == null) { 10864ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen if (DBG) Log.d(TAG, "Was not able to obtain an IWifiNanIface"); 10964ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } else { 11064ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen if (DBG) Log.d(TAG, "Obtained an IWifiNanIface"); 11164ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 112db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen try { 113db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen WifiStatus status = iface.registerEventCallback(mWifiAwareNativeCallback); 114db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen if (status.code != WifiStatusCode.SUCCESS) { 115db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen Log.e(TAG, "IWifiNanIface.registerEventCallback error: " + statusString( 116db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen status)); 117db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen mHalDeviceManager.removeIface(iface); 118db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen return; 119db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen } 120db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen } catch (RemoteException e) { 121db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen Log.e(TAG, "IWifiNanIface.registerEventCallback exception: " + e); 122db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen mHalDeviceManager.removeIface(iface); 123db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen return; 124db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen } 12564ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen mWifiNanIface = iface; 12664ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen mWifiAwareStateManager.enableUsage(); 12764ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 12864ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 12964ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 13064ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 13164ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private void awareIsDown() { 132448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohen synchronized (mLock) { 133448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohen if (DBG) Log.d(TAG, "awareIsDown: mWifiNanIface=" + mWifiNanIface); 134448a7b6b7b16cf39ed25729ceaf61edb30368567Etan Cohen if (mWifiNanIface != null) { 13564ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen mWifiNanIface = null; 13664ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen mWifiAwareStateManager.disableUsage(); 13764ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 13864ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 13964ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 14064ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 14164ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private class InterfaceDestroyedListener implements 14264ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen HalDeviceManager.InterfaceDestroyedListener { 14364ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen @Override 14464ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen public void onDestroyed() { 14564ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen if (DBG) Log.d(TAG, "Interface was destroyed"); 14664ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen awareIsDown(); 14764ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 14864ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 14964ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen 15064ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen private class InterfaceAvailableForRequestListener implements 15164ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen HalDeviceManager.InterfaceAvailableForRequestListener { 15264ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen @Override 15364ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen public void onAvailableForRequest() { 15464ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen if (DBG) Log.d(TAG, "Interface is possibly available"); 15564ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen tryToGetAware(); 15664ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 15764ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen } 158db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen 159db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen private static String statusString(WifiStatus status) { 160db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen if (status == null) { 161db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen return "status=null"; 162db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen } 163db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen StringBuilder sb = new StringBuilder(); 164db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen sb.append(status.code).append(" (").append(status.description).append(")"); 165db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen return sb.toString(); 166db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen } 167db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen 168db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen /** 169db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen * Dump the internal state of the class. 170db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen */ 171db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 172db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen pw.println("WifiAwareNativeManager:"); 173db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen pw.println(" mWifiNanIface: " + mWifiNanIface); 174db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen mHalDeviceManager.dump(fd, pw, args); 175db3c9d35a7f08de03beec81e801d917a5375f63eEtan Cohen } 17664ce9f185eb6097c1c358c44710be6e1ca7c7055Etan Cohen} 177