WifiAutoJoinController.java revision abde872adced15dfb6781fb71959453d963326db
1f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/* 262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * Copyright (C) 2014 The Android Open Source Project 3f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 4f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Licensed under the Apache License, Version 2.0 (the "License"); 5f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * you may not use this file except in compliance with the License. 6f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * You may obtain a copy of the License at 7f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 8f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * http://www.apache.org/licenses/LICENSE-2.0 9f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 10f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * Unless required by applicable law or agreed to in writing, software 11f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * distributed under the License is distributed on an "AS IS" BASIS, 12f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * See the License for the specific language governing permissions and 14f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * limitations under the License. 15f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 16f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 17f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepackage com.android.server.wifi; 18f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 19f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.content.Context; 20f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 21f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkKey; 22f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.NetworkScoreManager; 230c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport android.net.WifiKey; 24f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.wifi.WifiConfiguration; 25f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.wifi.ScanResult; 26f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.net.wifi.WifiManager; 27f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 28f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.os.SystemClock; 29f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport android.util.Log; 30f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 310c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport java.util.ArrayList; 320c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalleimport java.util.Collection; 33f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.Iterator; 34f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.HashMap; 35f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.List; 36f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalleimport java.util.Date; 37f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 38f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle/** 39f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * AutoJoin controller is responsible for WiFi Connect decision 40f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 41f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * It runs in the thread context of WifiStateMachine 42f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 43f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 44f22d23092ab37286a5ef9d257d5bb32c421d2669vandwallepublic class WifiAutoJoinController { 45f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 46f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private Context mContext; 47f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiStateMachine mWifiStateMachine; 48f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiConfigStore mWifiConfigStore; 49f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiTrafficPoller mWifiTrafficPoller; 50f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNative mWifiNative; 51f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 52f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private NetworkScoreManager scoreManager; 53f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private WifiNetworkScoreCache mNetworkScoreCache; 54f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 55f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final String TAG = "WifiAutoJoinController "; 56ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean DBG = false; 57ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle private static boolean VDBG = false; 58f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final boolean mStaStaSupported = false; 59f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private static final int SCAN_RESULT_CACHE_SIZE = 80; 60f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 61453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle private String mCurrentConfigurationKey = null; //used by autojoin 62f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 63f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private HashMap<String, ScanResult> scanResultCache = 64f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle new HashMap<String, ScanResult>(); 65f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 66f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiAutoJoinController(Context c, WifiStateMachine w, WifiConfigStore s, 67f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiTrafficPoller t, WifiNative n) { 68f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mContext = c; 69f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine = w; 70f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore = s; 71f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiTrafficPoller = t; 72f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiNative = n; 73f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 74f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager = (NetworkScoreManager) mContext.getSystemService(Context.NETWORK_SCORE_SERVICE); 75f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager == null) 76f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NULL " + " service " + Context.NETWORK_SCORE_SERVICE); 77f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle else 78f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("Registered scoreManager NOT NULL" + " service " + Context.NETWORK_SCORE_SERVICE); 79f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 80f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (scoreManager != null) { 81f13817203179f41620514718c8668ae7e418f8afJeff Davidson mNetworkScoreCache = new WifiNetworkScoreCache(mContext); 82f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scoreManager.registerNetworkScoreCache(NetworkKey.TYPE_WIFI, mNetworkScoreCache); 83f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 84f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("No network score service: Couldnt register as a WiFi score Manager, type=" 85f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(NetworkKey.TYPE_WIFI) 86f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " service " + Context.NETWORK_SCORE_SERVICE); 87f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mNetworkScoreCache = null; 88f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 89f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 90f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 91ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle void enableVerboseLogging(int verbose) { 92ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (verbose > 0 ) { 93abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = true; 94ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = true; 95ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } else { 96abde872adced15dfb6781fb71959453d963326dbYuhao Zheng DBG = false; 97ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle VDBG = false; 98ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 99ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 100ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle 101ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle 102ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle int mScanResultMaximumAge = 30000; /* milliseconds unit */ 103f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 104ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle /* 105ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * flush out scan results older than mScanResultMaximumAge 106ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * 107ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * */ 108f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private void ageScanResultsOut(int delay) { 109f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (delay <= 0) { 110f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle delay = mScanResultMaximumAge; //something sane 111f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 112f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Date now = new Date(); 113f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long milli = now.getTime(); 114f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 115f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("ageScanResultsOut delay " + Integer.valueOf(delay) + " size " 116f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.valueOf(scanResultCache.size()) + " now " + Long.valueOf(milli)); 117f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 118f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 119f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Iterator<HashMap.Entry<String,ScanResult>> iter = scanResultCache.entrySet().iterator(); 120f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (iter.hasNext()) { 121f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle HashMap.Entry<String,ScanResult> entry = iter.next(); 122f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult result = entry.getValue(); 123f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 124f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.seen + delay) < milli) { 125f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle iter.remove(); 126f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 127f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 128f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 129f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 130f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void addToScanCache(List<ScanResult> scanList) { 131f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration associatedConfig; 132f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1330c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle ArrayList<NetworkKey> unknownScanResults = new ArrayList<NetworkKey>(); 1340c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 135f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for(ScanResult result: scanList) { 136f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.seen = System.currentTimeMillis(); 137f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 138f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult sr = scanResultCache.get(result.BSSID); 139f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (sr != null) { 140f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // if there was a previous cache result for this BSSID, average the RSSI values 141f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 142f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int previous_rssi = sr.level; 143f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long previously_seen_milli = sr.seen; 144f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 145f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* average RSSI with previously seen instances of this scan result */ 146f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int avg_rssi = result.level; 147f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 148f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((previously_seen_milli > 0) 149f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && (previously_seen_milli < mScanResultMaximumAge/2)) { 150f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* 151f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 152f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * previously_seen_milli = 0 => RSSI = 0.5 * previous_seen_rssi + 0.5 * new_rssi 153f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 154f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If previously_seen_milli is 15+ seconds old: 155f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * previously_seen_milli = 15000 => RSSI = new_rssi 156f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * 157f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 158f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 159f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle double alpha = 0.5 - (double)previously_seen_milli 160f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle / (double)mScanResultMaximumAge; 161f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 162f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle avg_rssi = (int)((double)avg_rssi * (1-alpha) + (double)previous_rssi * alpha); 163f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 164f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.level = avg_rssi; 165f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 166f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //remove the previous Scan Result 167f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.remove(result.BSSID); 1680c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } else { 1690c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle if (!mNetworkScoreCache.isScoredNetwork(result)) { 1700c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle //TODO : properly handle SSID formatting, i.e. among others check for string 1710c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle //TODO : representing hexadecimal SSIDs 1720c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle WifiKey wkey = new WifiKey("\"" + result.SSID + "\"", result.BSSID); 1730c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle NetworkKey nkey = new NetworkKey(wkey); 1740c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle //if we don't know this scan result then request a score to Herrevad 1750c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle unknownScanResults.add(nkey); 1760c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 177f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 178f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 179f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle scanResultCache.put(result.BSSID, new ScanResult(result)); 180f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 181f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ScanResult srn = scanResultCache.get(result.BSSID); 182f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 183f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //add this BSSID to the scanResultCache of the relevant WifiConfiguration 184f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.updateSavedNetworkHistory(result); 185f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 1860c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle //try to associate this BSSID to an existing Saved WifiConfiguration 187f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (associatedConfig == null) { 188f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle associatedConfig = mWifiConfigStore.associateWithConfiguration(result); 189f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (associatedConfig != null) { 190f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 191f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("addToScanCache save associated config " 192f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + associatedConfig.SSID + " with " + associatedConfig.SSID); 193f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 194f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine.sendMessage(WifiManager.SAVE_NETWORK, associatedConfig); 195f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 196f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 197f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 1980c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle 1990c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle if (unknownScanResults.size() != 0) { 2000c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle NetworkKey[] newKeys = 2010c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle unknownScanResults.toArray(new NetworkKey[unknownScanResults.size()]); 2020c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle //kick the score manager, we will get updated scores asynchronously 2030c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle scoreManager.requestScores(newKeys); 2040c8b99a3b78e458a5617cc449e2efe69c5bdd531vandwalle } 205f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 206f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 207f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void logDbg(String message) { 2080888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle logDbg(message, false); 209ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 210ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 211ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle void logDbg(String message, boolean stackTrace) { 212f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long now = SystemClock.elapsedRealtimeNanos(); 2130888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle String ts = String.format("[%,d us] ", now / 1000); 214ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (stackTrace) { 215ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle Log.e(TAG, ts + message + " stack:" 216ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[2].getMethodName() + " - " 217ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[3].getMethodName() + " - " 218ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[4].getMethodName() + " - " 219ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Thread.currentThread().getStackTrace()[5].getMethodName()); 220ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } else { 221ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle Log.e(TAG, ts + message); 222ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 223f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 224f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 225f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* called directly from WifiStateMachine */ 226f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newSupplicantResults() { 227f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = mWifiStateMachine.syncGetScanResultsList(); 228f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 229f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(mScanResultMaximumAge); 230f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (DBG) 231f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("newSupplicantResults size=" + Integer.valueOf(scanResultCache.size()) ); 232f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 233f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 234f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 235f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 236f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 237f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 238f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 239f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* not used at the moment 240f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * should be a call back from WifiScanner HAL ?? 241f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * this function is not hooked and working yet, it will receive scan results from WifiScanners 242f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * with the list of IEs,then populate the capabilities by parsing the IEs and inject the scan 243f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * results as normal. 244f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle */ 245f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void newHalScanResults() { 246f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<ScanResult> scanList = null;//mWifiScanner.syncGetScanResultsList(); 247f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String akm = WifiParser.parse_akm(null, null); 248f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(akm); 249f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle addToScanCache(scanList); 250f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ageScanResultsOut(0); 251f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 252f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.writeKnownNetworkHistory(); 253f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 254f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 255f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* network link quality changed, called directly from WifiTrafficPoller, 256f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle or by listening to Link Quality intent */ 257f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void linkQualitySignificantChange() { 258f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle attemptAutoJoin(); 259f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 260f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 261f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* 262f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * compare a WifiConfiguration against the current network, return a delta score 263f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * If not associated, and the candidate will always be better 264f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * For instance if the candidate is a home network versus an unknown public wifi, 265f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle * the delta will be infinite, else compare Kepler scores etc… 266f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle ***/ 267f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle private int compareNetwork(WifiConfiguration candidate) { 268f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration currentNetwork = mWifiStateMachine.getCurrentWifiConfiguration(); 269f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (currentNetwork == null) 270f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 1000; 271f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 272f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate.configKey(true).equals(currentNetwork.configKey(true))) { 273f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return -1; 274f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 275f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 276f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = compareWifiConfigurations(currentNetwork, candidate); 277f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 278f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 279f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //ascending: currentNetwork < candidate 280f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 10; //will try switch over to the candidate 281f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 282f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 283f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 284f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 285f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 286ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle /** 287ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * update the network history fields fo that configuration 288ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if userTriggered, we mark the configuration as "non selfAdded" since the user has seen it 289ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * and took over management 290ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * - if it is a "connect", remember which network were there at the point of the connect, so 291ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * as those networks get a relative lower score than the selected configuration 29262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle * 293ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param netId 294ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param userTriggered : if the update come from WiFiManager 295ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle * @param connect : if the update includes a connect 296117be607246604e875de62aa8cdd99700b77a2b4vandwalle **/ 29762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle public void updateConfigurationHistory(int netId, boolean userTriggered, boolean connect) { 298f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration selected = mWifiConfigStore.getWifiConfiguration(netId); 299f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected == null) { 300f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 301f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 302f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 303e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (selected.SSID == null) { 304e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle return; 305e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 306e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 30762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (userTriggered) { 308ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // reenable autojoin for this network, 30962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle // since the user want to connect to this configuration 31062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 31162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.selfAdded = false; 31262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 313f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 314f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (DBG) { 315f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (selected.connectChoices != null) { 316ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 317f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(netId) + " now: " 3180888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle + Integer.toString(selected.connectChoices.size()), true); 319f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 320ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will update " 3210888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle + Integer.toString(netId), true); 322f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 323f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 324f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 325ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (connect && userTriggered) { 326ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle boolean found = false; 32762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle List<WifiConfiguration> networks = 32862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle mWifiConfigStore.getRecentConfiguredNetworks(12000, false); 32962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (networks != null) { 33062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle for (WifiConfiguration config : networks) { 33162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (DBG) 332ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory got " + config.SSID); 333f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 33462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.configKey(true).equals(config.configKey(true))) { 335ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle found = true; 33662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle continue; 33762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 338f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 33962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle int rssi = WifiConfiguration.INVALID_RSSI; 34062f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.visibility != null) { 34162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle rssi = config.visibility.rssi5; 34262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.visibility.rssi24 > rssi) 34362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle rssi = config.visibility.rssi24; 34462f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 34562f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (rssi < -80) { 34662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle continue; 34762f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 348f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 349ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle //the selected configuration was preferred over a recently seen config 350ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle //hence remember the user's choice: 351ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle //add the recently seen config to the selected's connectChoices array 352ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 353ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (selected.connectChoices == null) { 354ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle selected.connectChoices = new HashMap<String, Integer>(); 355ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 356ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 357ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory add a choice " + selected.configKey(true) 3580888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle + " over " + config.configKey(true) 3590888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle + " RSSI " + Integer.toString(rssi), true); 3600888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle //add the visible config to the selected's connect choice list 36162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle selected.connectChoices.put(config.configKey(true), rssi); 362f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 36362f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (config.connectChoices != null) { 364ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 365ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory will remove " 36662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + selected.configKey(true) + " from " + config.configKey(true)); 367ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 3680888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle //remove the selected from the recently seen config's connectChoice list 36962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle config.connectChoices.remove(selected.configKey(true)); 3700888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle 3710888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle if (selected.linkedConfigurations != null) { 3720888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle //remove the selected's linked configuration from the 3730888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle //recently seen config's connectChoice list 3740888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle for (String key : selected.linkedConfigurations.keySet()) { 3750888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle config.connectChoices.remove(key); 3760888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 3770888ce6f90bdaeee799dd8361ea4781e23a33b87vandwalle } 37862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 379ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 380ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (found == false) { 381ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // log an error for now but do something stringer later 382ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // we will need a new scan before attempting to connect to this 383ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // configuration anyhow and thus we can process the scan results then 384ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory try to connect to an old network!! : " 385ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + selected.configKey()); 38662f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 387f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 38862f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (selected.connectChoices != null) { 38962f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle if (VDBG) 390ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle logDbg("updateConfigurationHistory " + Integer.toString(netId) 39162f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle + " now: " + Integer.toString(selected.connectChoices.size())); 39262f1d0ca8ea4466628f6ff179b1f20e1279fa7e0vandwalle } 393ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 394ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle mWifiConfigStore.writeKnownNetworkHistory(); 395f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 396f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 397f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 398f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 399f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void printChoices(WifiConfiguration config) { 400f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int num = 0; 401f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices!= null) { 402f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle num = config.connectChoices.size(); 403f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 404f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 405f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("printChoices " + config.SSID + " num choices: " + Integer.toString(num)); 406f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices!= null) { 407f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : config.connectChoices.keySet()) { 408f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg(" " + key); 409f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 410f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 411f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 412f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 413f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean hasConnectChoice(WifiConfiguration source, WifiConfiguration target) { 414f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean found = false; 415f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (source == null) 416f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return false; 417f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (target == null) 418f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return false; 419f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 420f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (source.connectChoices != null) { 421f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ( source.connectChoices.get(target.configKey(true)) != null) { 422f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle found = true; 423f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 424f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 425f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 426f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (source.linkedConfigurations != null) { 427f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : source.linkedConfigurations.keySet()) { 428f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(key); 429f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config != null) { 430f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices != null) { 431f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.connectChoices.get(target.configKey(true)) != null) { 432f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle found = true; 433f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 434f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 435f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 436f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 437f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 438f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return found; 439f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 440f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 441f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurationsRSSI(WifiConfiguration a, WifiConfiguration b) { 442f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 443f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int boost5 = 25; 444f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 445f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 446f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 447f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 448453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //error -> cant happen, need to throw en exception 449f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations NULL band status!"); 450f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 451f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 452453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((astatus.rssi5 > -70) && (bstatus.rssi5 == WifiConfiguration.INVALID_RSSI) 453f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && ((astatus.rssi5+boost5) > (bstatus.rssi24))) { 454f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is seen on 5GHz with good RSSI, greater rssi than b 455f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 456f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 457453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else if ((bstatus.rssi5 > -70) && (astatus.rssi5 == WifiConfiguration.INVALID_RSSI) 458f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && ((bstatus.rssi5+boost5) > (bstatus.rssi24))) { 459f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //b is seen on 5GHz with good RSSI, greater rssi than a 460f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 461f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = 1; 462f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 463f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 464f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 465f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 466f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int compareWifiConfigurations(WifiConfiguration a, WifiConfiguration b) { 467f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = 0; 468117be607246604e875de62aa8cdd99700b77a2b4vandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 469f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle boolean linked = false; 470f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 471453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((a.linkedConfigurations != null) && (b.linkedConfigurations != null) 472453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (a.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED) 473453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (b.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED)) { 474f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((a.linkedConfigurations.get(b.configKey(true))!= null) 475f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && (b.linkedConfigurations.get(a.configKey(true))!= null)) { 476f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle linked = true; 477f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 478f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 479f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 480f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.ephemeral && b.ephemeral == false) { 481f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 482453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations ephemeral and prefers " + b.configKey() 483453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + a.configKey()); 484f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 485f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 1; //b is of higher priority - ascending 486f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 487f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (b.ephemeral && a.ephemeral == false) { 488f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 489453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations ephemeral and prefers " +a.configKey() 490453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey()); 491f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 492f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return -1; //a is of higher priority - descending 493f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 494f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 495f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int boost5 = 25; 496453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //apply Hysteresis: boost the RSSI value of the currently connected configuration 497453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle int aRssiBoost = 0; 498453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle int bRssiBoost = 0; 499453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (null != mCurrentConfigurationKey) { 500453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (a.configKey().equals(mCurrentConfigurationKey)) { 501453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle aRssiBoost += 10; 502453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else if (b.configKey().equals(mCurrentConfigurationKey)) { 503453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle bRssiBoost += 10; 504453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 505453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 506f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (linked) { 507f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // then we try prefer 5GHz, and try to ignore user's choice 508f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility astatus = a.visibility; 509f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility bstatus = b.visibility; 510f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (astatus == null || bstatus == null) { 511f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //error 512f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations NULL band status!"); 513f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return 0; 514f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 515f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 516f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 517f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("compareWifiConfigurations linked: " + Integer.toString(astatus.rssi5) 518f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + "," + Integer.toString(astatus.rssi24) + " " 519f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi5) + "," 520f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi24)); 521f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 522f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 523453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if ((astatus.rssi5 > -70) && (bstatus.rssi5 <= WifiConfiguration.INVALID_RSSI) 524453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && (astatus.rssi5+boost5+aRssiBoost) > (bstatus.rssi24+bRssiBoost)) { 525453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //in this case: a has 5GHz and b doesn't have 5GHz 526453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //compare a's 5GHz RSSI to b's 5GHz RSSI 527453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 528f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is seen on 5GHz with good RSSI, greater rssi than b 529f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 530f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -10; 531f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 532f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 533453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations linked and prefers " + a.configKey() 534453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() 535f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " due to 5GHz RSSI " + Integer.toString(astatus.rssi5) 536f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " over: 5=" + Integer.toString(bstatus.rssi5) 537f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + ", 2.4=" + Integer.toString(bstatus.rssi5)); 538f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 539453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else if ((bstatus.rssi5 > -70) && (astatus.rssi5 <= WifiConfiguration.INVALID_RSSI) 540453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle && ((bstatus.rssi5+boost5+bRssiBoost) > (astatus.rssi24+aRssiBoost))) { 541453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //in this case: b has 5GHz and a doesn't have 5GHz 542453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 543f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //b is seen on 5GHz with good RSSI, greater rssi than a 544f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 545f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 546453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations linked and prefers " + b.configKey() 547453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + a.configKey() + " due to 5GHz RSSI " 548f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(astatus.rssi5) + " over: 5=" 549f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi5) + ", 2.4=" 550f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(bstatus.rssi5)); 551f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 552f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = 10; 553453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else { 554453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //TODO: handle cases where configurations are dual band 555f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 556f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 557ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 558ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //compare by user's choice. 559f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (hasConnectChoice(a, b)) { 560f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 561f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = order -2; 562f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 563453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers -2 " + a.configKey() 564453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() 565ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + " due to user choice order -> " + Integer.toString(order)); 566f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 567f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 568f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 569f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (hasConnectChoice(b, a)) { 570f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 571f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = order + 2; 572f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 573453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers +2 " + b.configKey() + " over " 574453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to user choice order ->" + Integer.toString(order)); 575f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 576f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 577f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 578ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //TODO count the number of association rejection 579ede1310be531a84faa08f02c3fd243448dd936ddvandwalle // and use this to adjust the order by more than +/- 3 580ede1310be531a84faa08f02c3fd243448dd936ddvandwalle if ((a.status == WifiConfiguration.Status.DISABLED) 581ede1310be531a84faa08f02c3fd243448dd936ddvandwalle && (a.disableReason == WifiConfiguration.DISABLED_ASSOCIATION_REJECT)) { 582ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //a is of lower priority - ascending 583ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //lower the comparison score a bit 584ede1310be531a84faa08f02c3fd243448dd936ddvandwalle order = order +3; 585ede1310be531a84faa08f02c3fd243448dd936ddvandwalle } 586ede1310be531a84faa08f02c3fd243448dd936ddvandwalle if ((b.status == WifiConfiguration.Status.DISABLED) 587ede1310be531a84faa08f02c3fd243448dd936ddvandwalle && (b.disableReason == WifiConfiguration.DISABLED_ASSOCIATION_REJECT)) { 588ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //a is of higher priority - descending 589ede1310be531a84faa08f02c3fd243448dd936ddvandwalle //lower the comparison score a bit 590ede1310be531a84faa08f02c3fd243448dd936ddvandwalle order = order -3; 591ede1310be531a84faa08f02c3fd243448dd936ddvandwalle } 592ede1310be531a84faa08f02c3fd243448dd936ddvandwalle 593ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if ((lastSelectedConfiguration != null) 594ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle && a.configKey().equals(lastSelectedConfiguration)) { 595ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // a is the last selected configuration, so keep it above connect choices 596ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle //by giving a -4 (whereas connect choice preference gives +2) 597ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle order = order - 4; 598ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 599453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers -4 " + a.configKey() 600453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() + " because a is the last selected -> " 601ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Integer.toString(order)); 602ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 603ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } else if ((lastSelectedConfiguration != null) 604ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle && b.configKey().equals(lastSelectedConfiguration)) { 605ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle // b is the last selected configuration, so keep it above connect choices 606ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle //by giving a +4 (whereas connect choice preference gives -2) 607ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle order = order + 4; 608ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle if (VDBG) { 609453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers +4 " + a.configKey() 610453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " over " + b.configKey() + " because b is the last selected -> " 611ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle + Integer.toString(order)); 612ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 613ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle } 614ecd2b88214b5d214fd1f63a9560caff9058912ddvandwalle 615f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order == 0) { 616f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //we don't know anything - pick the last seen i.e. K behavior 617f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //we should do this only for recently picked configurations 618f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (a.priority > b.priority) { 619f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of higher priority - descending 620f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 621453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers -1 " + a.configKey() + " over " 622453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " due to priority"); 623f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 624f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 625f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = -1; 626f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else if (a.priority < b.priority) { 627f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //a is of lower priority - ascending 628f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 629453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers +1 " + b.configKey() + " over " 630453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to priority"); 631f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 632f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 633f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = 1; 634f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 635f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //maybe just look at RSSI or band 636f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 637453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations prefers +1 " + b.configKey() + " over " 638453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + a.configKey() + " due to nothing"); 639f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 640f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 641f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle order = compareWifiConfigurationsRSSI(a, b); //compare RSSI 642f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 643f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 644f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 645f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String sorder = " == "; 646f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) 647f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " < "; 648f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order < 0) 649f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle sorder = " > "; 650f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 651f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 652453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("compareWifiConfigurations Done: " + a.configKey() + sorder 653453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + b.configKey() + " order " + Integer.toString(order)); 654f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 655f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 656f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return order; 657f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 658f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 659f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* attemptAutoJoin function implement the core of the a network switching algorithm */ 660f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle void attemptAutoJoin() { 6618c9088d11880553458f09377cc60d6eb7e66747bvandwalle String lastSelectedConfiguration = mWifiConfigStore.getLastSelectedConfiguration(); 6628c9088d11880553458f09377cc60d6eb7e66747bvandwalle 663453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //reset the currentConfiguration Key, and set it only if WifiStateMachine and 664453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // supplicant agree 665453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = null; 666453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle WifiConfiguration currentConfiguration = mWifiStateMachine.getCurrentWifiConfiguration(); 667453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 668f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration candidate = null; 669f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 670f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* obtain the subset of recently seen networks */ 671f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle List<WifiConfiguration> list = mWifiConfigStore.getRecentConfiguredNetworks(3000, true); 672f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (list == null) { 673f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) logDbg("attemptAutoJoin nothing"); 674f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle return; 675f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 676f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 677f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* find the currently connected network: ask the supplicant directly */ 678f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String val = mWifiNative.status(); 679f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle String status[] = val.split("\\r?\\n"); 680f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 681f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle logDbg("attemptAutoJoin() status=" + val + " split=" 682f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(status.length)); 683f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 684f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 685f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int currentNetId = -1; 686f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (String key : status) { 687f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (key.regionMatches(0, "id=", 0, 3)) { 688f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int idx = 3; 689f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle currentNetId = 0; 690f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle while (idx < key.length()) { 691f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle char c = key.charAt(idx); 692f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 693f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((c >= 0x30) && (c <= 0x39)) { 694f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle currentNetId *= 10; 695f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle currentNetId += c - 0x30; 696f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle idx++; 697f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 698f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle break; 699f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 700f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 701f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 702f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 703ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 704ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin() num recent config " + Integer.toString(list.size()) 705ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + " ---> currentId=" + Integer.toString(currentNetId)); 706ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 707f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 708453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (currentConfiguration != null) { 709453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (currentNetId != currentConfiguration.networkId) { 710453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin() ERROR wpa_supplicant out of sync nid=" 711453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + Integer.toString(currentNetId) + " WifiStateMachine=" 712453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + Integer.toString(currentConfiguration.networkId)); 713453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //I think this can happen due do race conditions, now what to do?? 714453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // -> throw an exception, or, 715453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle // -> dont use the current configuration at all for autojoin 716453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //and hope that autojoining will kick us out of this state. 717453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle currentConfiguration = null; 718453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } else { 719453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle mCurrentConfigurationKey = currentConfiguration.configKey(); 720453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 721453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle } 722453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 723f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* select Best Network candidate from known WifiConfigurations */ 724f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (WifiConfiguration config : list) { 725f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((config.status == WifiConfiguration.Status.DISABLED) 726f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle && (config.disableReason == WifiConfiguration.DISABLED_AUTH_FAILURE)) { 727ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 728ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin skip candidate due to auth failure key " 729ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + config.configKey(true)); 730ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 731f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 732f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 733453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle 734e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle if (config.SSID == null) { 735e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle return; 736e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle } 737e86c962bb99a8b126ed64ddcc6b112161549e26dvandwalle 738453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle if (config.autoJoinStatus >= WifiConfiguration.AUTO_JOIN_TEMPORARY_DISABLED) { 739453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //avoid temporarily disabled networks altogether 740453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle //TODO: implement a better logic which will reenable the network after some time 741ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 742ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin skip candidate due to auto join status " 743ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + Integer.toString(config.autoJoinStatus) + " key " 744ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + config.configKey(true)); 745ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 746f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 747f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 748f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 749f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (config.networkId == currentNetId) { 750ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 751ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin skip current candidate " + Integer.toString(currentNetId) 752ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + " key " + config.configKey(true)); 753ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 754f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle continue; 755f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 756f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 7578c9088d11880553458f09377cc60d6eb7e66747bvandwalle if (lastSelectedConfiguration == null || !config.configKey().equals(lastSelectedConfiguration)) { 7588c9088d11880553458f09377cc60d6eb7e66747bvandwalle //don't try to autojoin a network that is too far 7598c9088d11880553458f09377cc60d6eb7e66747bvandwalle if (config.visibility == null) { 7608c9088d11880553458f09377cc60d6eb7e66747bvandwalle continue; 7618c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 7628c9088d11880553458f09377cc60d6eb7e66747bvandwalle if (config.visibility.rssi5 < -70 && config.visibility.rssi24 < -80) { 7638c9088d11880553458f09377cc60d6eb7e66747bvandwalle continue; 7648c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 7658c9088d11880553458f09377cc60d6eb7e66747bvandwalle } 7668c9088d11880553458f09377cc60d6eb7e66747bvandwalle 767ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG) { 768ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle logDbg("attemptAutoJoin trying candidate id=" + config.networkId + " " 769ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle + config.SSID + " key " + config.configKey(true)); 770ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 771f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 772f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate == null) { 773f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 774f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 775f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) { 776453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin will compare candidate " + candidate.configKey() 777453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " with " + config.configKey() + " key " + config.configKey(true)); 778f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 779f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 780f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int order = compareWifiConfigurations(candidate, config); 781f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (order > 0) { 782f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //ascending : candidate < config 783f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = config; 784f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 785f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 786f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 787f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 788f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* now, go thru scan result to try finding a better Herrevad network */ 789f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mNetworkScoreCache != null) { 790f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi5 = WifiConfiguration.INVALID_RSSI; 791f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int rssi24 = WifiConfiguration.INVALID_RSSI; 792f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle WifiConfiguration.Visibility visibility; 793f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 794f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi5 = candidate.visibility.rssi5; 795f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle rssi24 = candidate.visibility.rssi24; 796f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 797f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 798f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //get current date 799f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle Date now = new Date(); 800f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle long now_ms = now.getTime(); 801f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 802f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (rssi5 < -60 && rssi24 < -70) { 803f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for (ScanResult result : scanResultCache.values()) { 804f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((now_ms - result.seen) < 3000) { 805f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int score = mNetworkScoreCache.getNetworkScore(result); 806f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (score > 0) { 807f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // try any arbitrary formula for now, adding apple and oranges, 808f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // i.e. adding network score and "dBm over noise" 809f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (result.frequency < 4000) { 810f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.level + score) > (rssi24 -40)) { 811f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // force it as open, TBD should we otherwise verify that this 812f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // BSSID only supports open?? 813f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.capabilities = ""; 814f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 815f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //switch to this scan result 816f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = 817f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.wifiConfigurationFromScanResult(result); 818f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate.ephemeral = true; 819f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 820f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 821f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if ((result.level + score) > (rssi5 -30)) { 822f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // force it as open, TBD should we otherwise verify that this 823f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle // BSSID only supports open?? 824f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle result.capabilities = ""; 825f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 826f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //switch to this scan result 827f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate = 828f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiConfigStore.wifiConfigurationFromScanResult(result); 829f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate.ephemeral = true; 830f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 831f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 832f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 833f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 834f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 835f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 836f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 837f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (candidate != null) { 838453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle /* if candidate is found, check the state of the connection so as 839453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle to decide if we should be acting on this candidate and switching over */ 840f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle int networkDelta = compareNetwork(candidate); 841ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle if (DBG && (networkDelta > 0)) { 842453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("attemptAutoJoin did find candidate " + candidate.configKey() 843f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + " for delta " + Integer.toString(networkDelta)); 844ed9938883ae2dade81c8be6cd6ceaef3febd5239vandwalle } 845f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle /* ASK traffic poller permission to switch: 846f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle for instance, 847f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if user is currently streaming voice traffic, 848f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle then don’t switch regardless of the delta */ 849f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 850f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mWifiTrafficPoller.shouldSwitchNetwork(networkDelta)) { 851f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (mStaStaSupported) { 852453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("mStaStaSupported --> error do nothing now "); 853f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } else { 854f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (DBG) { 855453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle logDbg("AutoJoin auto connect with netId " 856f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle + Integer.toString(candidate.networkId) 857453aee50caf7e332e77ab3d995d7c87a958e4fd4vandwalle + " to " + candidate.configKey()); 858f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 859f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 860f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle mWifiStateMachine.sendMessage(WifiStateMachine.CMD_AUTO_CONNECT, 861f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle candidate.networkId); 862f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //mWifiConfigStore.enableNetworkWithoutBroadcast(candidate.networkId, true); 863f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 864f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //we would do the below only if we want to persist the new choice 865f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle //mWifiConfigStore.selectNetwork(candidate.networkId); 866f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 867f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 868f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 869f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 870f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle if (VDBG) logDbg("Done attemptAutoJoin"); 871f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle } 872f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle} 873f22d23092ab37286a5ef9d257d5bb32c421d2669vandwalle 874